1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1519 2023/11/18 14:33:07 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','authordefaults',
2757: 'selfenrollment','coursecategories',
2758: 'ssl','autoenroll','trust',
2759: 'helpsettings','wafproxy',
2760: 'ltisec','toolsec','domexttool',
2761: 'exttool','privacy'],$domain);
2762: my @coursetypes = ('official','unofficial','community','textbook','placement');
2763: if (ref($domconfig{'defaults'}) eq 'HASH') {
2764: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
2765: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
2766: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
2767: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
2768: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
2769: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
2770: $domdefaults{'portal_def_email'} = $domconfig{'defaults'}{'portal_def_email'};
2771: $domdefaults{'portal_def_web'} = $domconfig{'defaults'}{'portal_def_web'};
2772: $domdefaults{'intauth_cost'} = $domconfig{'defaults'}{'intauth_cost'};
2773: $domdefaults{'intauth_switch'} = $domconfig{'defaults'}{'intauth_switch'};
2774: $domdefaults{'intauth_check'} = $domconfig{'defaults'}{'intauth_check'};
2775: $domdefaults{'unamemap_rule'} = $domconfig{'defaults'}{'unamemap_rule'};
2776: } else {
2777: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
2778: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
2779: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
2780: }
2781: if (ref($domconfig{'quotas'}) eq 'HASH') {
2782: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
2783: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
2784: } else {
2785: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
2786: }
2787: my @usertools = ('aboutme','blog','webdav','portfolio');
2788: foreach my $item (@usertools) {
2789: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
2790: $domdefaults{$item} = $domconfig{'quotas'}{$item};
2791: }
2792: }
2793: if (ref($domconfig{'quotas'}{'authorquota'}) eq 'HASH') {
2794: $domdefaults{'authorquota'} = $domconfig{'quotas'}{'authorquota'};
2795: }
2796: }
2797: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
2798: foreach my $item ('official','unofficial','community','textbook','placement') {
2799: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
2800: }
2801: }
2802: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
2803: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
2804: }
2805: if (ref($domconfig{'authordefaults'}) eq 'HASH') {
2806: foreach my $item ('nocodemirror','copyright','sourceavail','domcoordacc','editors') {
2807: if ($item eq 'editors') {
2808: if (ref($domconfig{'authordefaults'}{'editors'}) eq 'ARRAY') {
2809: $domdefaults{$item} = join(',',@{$domconfig{'authordefaults'}{'editors'}});
2810: }
2811: } else {
2812: $domdefaults{$item} = $domconfig{'authordefaults'}{$item};
2813: }
2814: }
2815: }
2816: if (ref($domconfig{'inststatus'}) eq 'HASH') {
2817: foreach my $item ('inststatustypes','inststatusorder','inststatusguest') {
2818: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2819: }
2820: }
2821: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2822: $domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
2823: $domdefaults{'usejsme'} = $domconfig{'coursedefaults'}{'usejsme'};
2824: $domdefaults{'inline_chem'} = $domconfig{'coursedefaults'}{'inline_chem'};
2825: $domdefaults{'uselcmath'} = $domconfig{'coursedefaults'}{'uselcmath'};
2826: if (ref($domconfig{'coursedefaults'}{'postsubmit'}) eq 'HASH') {
2827: $domdefaults{'postsubmit'} = $domconfig{'coursedefaults'}{'postsubmit'}{'client'};
2828: }
2829: foreach my $type (@coursetypes) {
2830: if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
2831: unless ($type eq 'community') {
2832: $domdefaults{$type.'credits'} = $domconfig{'coursedefaults'}{'coursecredits'}{$type};
2833: }
2834: }
2835: if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
2836: $domdefaults{$type.'quota'} = $domconfig{'coursedefaults'}{'uploadquota'}{$type};
2837: }
2838: if (ref($domconfig{'coursedefaults'}{'coursequota'}) eq 'HASH') {
2839: $domdefaults{$type.'coursequota'} = $domconfig{'coursedefaults'}{'coursequota'}{$type};
2840: }
2841: if ($domdefaults{'postsubmit'} eq 'on') {
2842: if (ref($domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}) eq 'HASH') {
2843: $domdefaults{$type.'postsubtimeout'} =
2844: $domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}{$type};
2845: }
2846: }
2847: if (ref($domconfig{'coursedefaults'}{'domexttool'}) eq 'HASH') {
2848: $domdefaults{$type.'domexttool'} = $domconfig{'coursedefaults'}{'domexttool'}{$type};
2849: } else {
2850: $domdefaults{$type.'domexttool'} = 1;
2851: }
2852: if (ref($domconfig{'coursedefaults'}{'exttool'}) eq 'HASH') {
2853: $domdefaults{$type.'exttool'} = $domconfig{'coursedefaults'}{'exttool'}{$type};
2854: } else {
2855: $domdefaults{$type.'exttool'} = 0;
2856: }
2857: }
2858: if (ref($domconfig{'coursedefaults'}{'canclone'}) eq 'HASH') {
2859: if (ref($domconfig{'coursedefaults'}{'canclone'}{'instcode'}) eq 'ARRAY') {
2860: my @clonecodes = @{$domconfig{'coursedefaults'}{'canclone'}{'instcode'}};
2861: if (@clonecodes) {
2862: $domdefaults{'canclone'} = join('+',@clonecodes);
2863: }
2864: }
2865: } elsif ($domconfig{'coursedefaults'}{'canclone'}) {
2866: $domdefaults{'canclone'}=$domconfig{'coursedefaults'}{'canclone'};
2867: }
2868: if ($domconfig{'coursedefaults'}{'texengine'}) {
2869: $domdefaults{'texengine'} = $domconfig{'coursedefaults'}{'texengine'};
2870: }
2871: if (exists($domconfig{'coursedefaults'}{'ltiauth'})) {
2872: $domdefaults{'crsltiauth'} = $domconfig{'coursedefaults'}{'ltiauth'};
2873: }
2874: }
2875: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2876: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2877: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2878: }
2879: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2880: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2881: }
2882: if (ref($domconfig{'usersessions'}{'offloadnow'}) eq 'HASH') {
2883: $domdefaults{'offloadnow'} = $domconfig{'usersessions'}{'offloadnow'};
2884: }
2885: if (ref($domconfig{'usersessions'}{'offloadoth'}) eq 'HASH') {
2886: $domdefaults{'offloadoth'} = $domconfig{'usersessions'}{'offloadoth'};
2887: }
2888: }
2889: if (ref($domconfig{'selfenrollment'}) eq 'HASH') {
2890: if (ref($domconfig{'selfenrollment'}{'admin'}) eq 'HASH') {
2891: my @settings = ('types','registered','enroll_dates','access_dates','section',
2892: 'approval','limit');
2893: foreach my $type (@coursetypes) {
2894: if (ref($domconfig{'selfenrollment'}{'admin'}{$type}) eq 'HASH') {
2895: my @mgrdc = ();
2896: foreach my $item (@settings) {
2897: if ($domconfig{'selfenrollment'}{'admin'}{$type}{$item} eq '0') {
2898: push(@mgrdc,$item);
2899: }
2900: }
2901: if (@mgrdc) {
2902: $domdefaults{$type.'selfenrolladmdc'} = join(',',@mgrdc);
2903: }
2904: }
2905: }
2906: }
2907: if (ref($domconfig{'selfenrollment'}{'default'}) eq 'HASH') {
2908: foreach my $type (@coursetypes) {
2909: if (ref($domconfig{'selfenrollment'}{'default'}{$type}) eq 'HASH') {
2910: foreach my $item (keys(%{$domconfig{'selfenrollment'}{'default'}{$type}})) {
2911: $domdefaults{$type.'selfenroll'.$item} = $domconfig{'selfenrollment'}{'default'}{$type}{$item};
2912: }
2913: }
2914: }
2915: }
2916: }
2917: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
2918: $domdefaults{'catauth'} = 'std';
2919: $domdefaults{'catunauth'} = 'std';
2920: if ($domconfig{'coursecategories'}{'auth'}) {
2921: $domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};
2922: }
2923: if ($domconfig{'coursecategories'}{'unauth'}) {
2924: $domdefaults{'catunauth'} = $domconfig{'coursecategories'}{'unauth'};
2925: }
2926: }
2927: if (ref($domconfig{'ssl'}) eq 'HASH') {
2928: if (ref($domconfig{'ssl'}{'replication'}) eq 'HASH') {
2929: $domdefaults{'replication'} = $domconfig{'ssl'}{'replication'};
2930: }
2931: if (ref($domconfig{'ssl'}{'connto'}) eq 'HASH') {
2932: $domdefaults{'connect'} = $domconfig{'ssl'}{'connto'};
2933: }
2934: if (ref($domconfig{'ssl'}{'connfrom'}) eq 'HASH') {
2935: $domdefaults{'connect'} = $domconfig{'ssl'}{'connfrom'};
2936: }
2937: }
2938: if (ref($domconfig{'trust'}) eq 'HASH') {
2939: my @prefixes = qw(content shared enroll othcoau coaurem domroles catalog reqcrs msg);
2940: foreach my $prefix (@prefixes) {
2941: if (ref($domconfig{'trust'}{$prefix}) eq 'HASH') {
2942: $domdefaults{'trust'.$prefix} = $domconfig{'trust'}{$prefix};
2943: }
2944: }
2945: }
2946: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
2947: $domdefaults{'autofailsafe'} = $domconfig{'autoenroll'}{'autofailsafe'};
2948: $domdefaults{'failsafe'} = $domconfig{'autoenroll'}{'failsafe'};
2949: }
2950: if (ref($domconfig{'helpsettings'}) eq 'HASH') {
2951: $domdefaults{'submitbugs'} = $domconfig{'helpsettings'}{'submitbugs'};
2952: if (ref($domconfig{'helpsettings'}{'adhoc'}) eq 'HASH') {
2953: $domdefaults{'adhocroles'} = $domconfig{'helpsettings'}{'adhoc'};
2954: }
2955: }
2956: if (ref($domconfig{'wafproxy'}) eq 'HASH') {
2957: foreach my $item ('ipheader','trusted','vpnint','vpnext','sslopt') {
2958: if ($domconfig{'wafproxy'}{$item}) {
2959: $domdefaults{'waf_'.$item} = $domconfig{'wafproxy'}{$item};
2960: }
2961: }
2962: }
2963: if (ref($domconfig{'ltisec'}) eq 'HASH') {
2964: if (ref($domconfig{'ltisec'}{'encrypt'}) eq 'HASH') {
2965: $domdefaults{'linkprotenc_crs'} = $domconfig{'ltisec'}{'encrypt'}{'crs'};
2966: $domdefaults{'linkprotenc_dom'} = $domconfig{'ltisec'}{'encrypt'}{'dom'};
2967: $domdefaults{'ltienc_consumers'} = $domconfig{'ltisec'}{'encrypt'}{'consumers'};
2968: }
2969: if (ref($domconfig{'ltisec'}{'private'}) eq 'HASH') {
2970: if (ref($domconfig{'ltisec'}{'private'}{'keys'}) eq 'ARRAY') {
2971: $domdefaults{'ltiprivhosts'} = $domconfig{'ltisec'}{'private'}{'keys'};
2972: }
2973: }
2974: }
2975: if (ref($domconfig{'toolsec'}) eq 'HASH') {
2976: if (ref($domconfig{'toolsec'}{'encrypt'}) eq 'HASH') {
2977: $domdefaults{'toolenc_crs'} = $domconfig{'toolsec'}{'encrypt'}{'crs'};
2978: $domdefaults{'toolenc_dom'} = $domconfig{'toolsec'}{'encrypt'}{'dom'};
2979: }
2980: if (ref($domconfig{'toolsec'}{'private'}) eq 'HASH') {
2981: if (ref($domconfig{'toolsec'}{'private'}{'keys'}) eq 'ARRAY') {
2982: $domdefaults{'toolprivhosts'} = $domconfig{'toolsec'}{'private'}{'keys'};
2983: }
2984: }
2985: }
2986: if (ref($domconfig{'privacy'}) eq 'HASH') {
2987: if (ref($domconfig{'privacy'}{'approval'}) eq 'HASH') {
2988: foreach my $domtype ('instdom','extdom') {
2989: if (ref($domconfig{'privacy'}{'approval'}{$domtype}) eq 'HASH') {
2990: foreach my $roletype ('domain','author','course','community') {
2991: if ($domconfig{'privacy'}{'approval'}{$domtype}{$roletype} eq 'user') {
2992: $domdefaults{'userapprovals'} = 1;
2993: last;
2994: }
2995: }
2996: }
2997: last if ($domdefaults{'userapprovals'});
2998: }
2999: }
3000: }
3001: &do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
3002: return %domdefaults;
3003: }
3004:
3005: sub get_dom_cats {
3006: my ($dom) = @_;
3007: return unless (&domain($dom));
3008: my ($cats,$cached)=&is_cached_new('cats',$dom);
3009: unless (defined($cached)) {
3010: my %domconfig = &get_dom('configuration',['coursecategories'],$dom);
3011: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
3012: if (ref($domconfig{'coursecategories'}{'cats'}) eq 'HASH') {
3013: %{$cats} = %{$domconfig{'coursecategories'}{'cats'}};
3014: } else {
3015: $cats = {};
3016: }
3017: } else {
3018: $cats = {};
3019: }
3020: &do_cache_new('cats',$dom,$cats,3600);
3021: }
3022: return $cats;
3023: }
3024:
3025: sub get_dom_instcats {
3026: my ($dom) = @_;
3027: return unless (&domain($dom));
3028: my ($instcats,$cached)=&is_cached_new('instcats',$dom);
3029: unless (defined($cached)) {
3030: my (%coursecodes,%codes,@codetitles,%cat_titles,%cat_order);
3031: my $totcodes = &retrieve_instcodes(\%coursecodes,$dom);
3032: if ($totcodes > 0) {
3033: my $caller = 'global';
3034: if (&auto_instcode_format($caller,$dom,\%coursecodes,\%codes,
3035: \@codetitles,\%cat_titles,\%cat_order) eq 'ok') {
3036: $instcats = {
3037: totcodes => $totcodes,
3038: codes => \%codes,
3039: codetitles => \@codetitles,
3040: cat_titles => \%cat_titles,
3041: cat_order => \%cat_order,
3042: };
3043: &do_cache_new('instcats',$dom,$instcats,3600);
3044: }
3045: }
3046: }
3047: return $instcats;
3048: }
3049:
3050: sub retrieve_instcodes {
3051: my ($coursecodes,$dom) = @_;
3052: my $totcodes;
3053: my %courses = &courseiddump($dom,'.',1,'.','.','.',undef,undef,'Course');
3054: foreach my $course (keys(%courses)) {
3055: if (ref($courses{$course}) eq 'HASH') {
3056: if ($courses{$course}{'inst_code'} ne '') {
3057: $$coursecodes{$course} = $courses{$course}{'inst_code'};
3058: $totcodes ++;
3059: }
3060: }
3061: }
3062: return $totcodes;
3063: }
3064:
3065: sub course_portal_url {
3066: my ($cnum,$cdom,$r) = @_;
3067: my $chome = &homeserver($cnum,$cdom);
3068: my $hostname = &hostname($chome);
3069: my $protocol = $protocol{$chome};
3070: $protocol = 'http' if ($protocol ne 'https');
3071: my %domdefaults = &get_domain_defaults($cdom);
3072: my $firsturl;
3073: if ($domdefaults{'portal_def'}) {
3074: $firsturl = $domdefaults{'portal_def'};
3075: } else {
3076: my $alias = &use_proxy_alias($r,$chome);
3077: $hostname = $alias if ($alias ne '');
3078: $firsturl = $protocol.'://'.$hostname;
3079: }
3080: return $firsturl;
3081: }
3082:
3083: sub url_prefix {
3084: my ($r,$dom,$home,$context) = @_;
3085: my $prefix;
3086: my %domdefs = &get_domain_defaults($dom);
3087: if ($domdefs{'portal_def'} && $domdefs{'portal_def_'.$context}) {
3088: if ($domdefs{'portal_def'} =~ m{^(https?://[^/]+)}) {
3089: $prefix = $1;
3090: }
3091: }
3092: if ($prefix eq '') {
3093: my $hostname = &hostname($home);
3094: my $protocol = $protocol{$home};
3095: $protocol = 'http' if ($protocol{$home} ne 'https');
3096: my $alias = &use_proxy_alias($r,$home);
3097: $hostname = $alias if ($alias ne '');
3098: $prefix = $protocol.'://'.$hostname;
3099: }
3100: return $prefix;
3101: }
3102:
3103: # --------------------------------------------- Get domain config for passwords
3104:
3105: sub get_passwdconf {
3106: my ($dom) = @_;
3107: my (%passwdconf,$gotconf,$lookup);
3108: my ($result,$cached)=&is_cached_new('passwdconf',$dom);
3109: if (defined($cached)) {
3110: if (ref($result) eq 'HASH') {
3111: %passwdconf = %{$result};
3112: $gotconf = 1;
3113: }
3114: }
3115: unless ($gotconf) {
3116: my %domconfig = &get_dom('configuration',['passwords'],$dom);
3117: if (ref($domconfig{'passwords'}) eq 'HASH') {
3118: %passwdconf = %{$domconfig{'passwords'}};
3119: }
3120: my $cachetime = 24*60*60;
3121: &do_cache_new('passwdconf',$dom,\%passwdconf,$cachetime);
3122: }
3123: return %passwdconf;
3124: }
3125:
3126: # --------------------------------------------------- Assign a key to a student
3127:
3128: sub assign_access_key {
3129: #
3130: # a valid key looks like uname:udom#comments
3131: # comments are being appended
3132: #
3133: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
3134: $kdom=
3135: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
3136: $knum=
3137: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
3138: $cdom=
3139: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
3140: $cnum=
3141: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
3142: $udom=$env{'user.name'} unless (defined($udom));
3143: $uname=$env{'user.domain'} unless (defined($uname));
3144: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
3145: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
3146: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
3147: # assigned to this person
3148: # - this should not happen,
3149: # unless something went wrong
3150: # the first time around
3151: # ready to assign
3152: $logentry=$1.'; '.$logentry;
3153: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
3154: $kdom,$knum) eq 'ok') {
3155: # key now belongs to user
3156: my $envkey='key.'.$cdom.'_'.$cnum;
3157: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
3158: &appenv({'environment.'.$envkey => $ckey});
3159: return 'ok';
3160: } else {
3161: return
3162: 'error: Count not permanently assign key, will need to be re-entered later.';
3163: }
3164: } else {
3165: return 'error: Could not assign key, try again later.';
3166: }
3167: } elsif (!$existing{$ckey}) {
3168: # the key does not exist
3169: return 'error: The key does not exist';
3170: } else {
3171: # the key is somebody else's
3172: return 'error: The key is already in use';
3173: }
3174: }
3175:
3176: # ------------------------------------------ put an additional comment on a key
3177:
3178: sub comment_access_key {
3179: #
3180: # a valid key looks like uname:udom#comments
3181: # comments are being appended
3182: #
3183: my ($ckey,$cdom,$cnum,$logentry)=@_;
3184: $cdom=
3185: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
3186: $cnum=
3187: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
3188: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
3189: if ($existing{$ckey}) {
3190: $existing{$ckey}.='; '.$logentry;
3191: # ready to assign
3192: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
3193: $cdom,$cnum) eq 'ok') {
3194: return 'ok';
3195: } else {
3196: return 'error: Count not store comment.';
3197: }
3198: } else {
3199: # the key does not exist
3200: return 'error: The key does not exist';
3201: }
3202: }
3203:
3204: # ------------------------------------------------------ Generate a set of keys
3205:
3206: sub generate_access_keys {
3207: my ($number,$cdom,$cnum,$logentry)=@_;
3208: $cdom=
3209: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
3210: $cnum=
3211: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
3212: unless (&allowed('mky',$cdom)) { return 0; }
3213: unless (($cdom) && ($cnum)) { return 0; }
3214: if ($number>10000) { return 0; }
3215: sleep(2); # make sure don't get same seed twice
3216: srand(time()^($$+($$<<15))); # from "Programming Perl"
3217: my $total=0;
3218: for (my $i=1;$i<=$number;$i++) {
3219: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
3220: sprintf("%lx",int(100000*rand)).'-'.
3221: sprintf("%lx",int(100000*rand));
3222: $newkey=~s/1/g/g; # folks mix up 1 and l
3223: $newkey=~s/0/h/g; # and also 0 and O
3224: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
3225: if ($existing{$newkey}) {
3226: $i--;
3227: } else {
3228: if (&put('accesskeys',
3229: { $newkey => '# generated '.localtime().
3230: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
3231: '; '.$logentry },
3232: $cdom,$cnum) eq 'ok') {
3233: $total++;
3234: }
3235: }
3236: }
3237: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
3238: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
3239: return $total;
3240: }
3241:
3242: # ------------------------------------------------------- Validate an accesskey
3243:
3244: sub validate_access_key {
3245: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
3246: $cdom=
3247: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
3248: $cnum=
3249: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
3250: $udom=$env{'user.domain'} unless (defined($udom));
3251: $uname=$env{'user.name'} unless (defined($uname));
3252: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
3253: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
3254: }
3255:
3256: # ------------------------------------- Find the section of student in a course
3257: sub devalidate_getsection_cache {
3258: my ($udom,$unam,$courseid)=@_;
3259: my $hashid="$udom:$unam:$courseid";
3260: &devalidate_cache_new('getsection',$hashid);
3261: }
3262:
3263: sub courseid_to_courseurl {
3264: my ($courseid) = @_;
3265: #already url style courseid
3266: return $courseid if ($courseid =~ m{^/});
3267:
3268: if (exists($env{'course.'.$courseid.'.num'})) {
3269: my $cnum = $env{'course.'.$courseid.'.num'};
3270: my $cdom = $env{'course.'.$courseid.'.domain'};
3271: return "/$cdom/$cnum";
3272: }
3273:
3274: my %courseinfo=&coursedescription($courseid);
3275: if (exists($courseinfo{'num'})) {
3276: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
3277: }
3278:
3279: return undef;
3280: }
3281:
3282: sub getsection {
3283: my ($udom,$unam,$courseid)=@_;
3284: my $cachetime=1800;
3285:
3286: my $hashid="$udom:$unam:$courseid";
3287: my ($result,$cached)=&is_cached_new('getsection',$hashid);
3288: if (defined($cached)) { return $result; }
3289:
3290: my %Pending;
3291: my %Expired;
3292: #
3293: # Each role can either have not started yet (pending), be active,
3294: # or have expired.
3295: #
3296: # If there is an active role, we are done.
3297: #
3298: # If there is more than one role which has not started yet,
3299: # choose the one which will start sooner
3300: # If there is one role which has not started yet, return it.
3301: #
3302: # If there is more than one expired role, choose the one which ended last.
3303: # If there is a role which has expired, return it.
3304: #
3305: $courseid = &courseid_to_courseurl($courseid);
3306: my %roleshash = &dump('roles',$udom,$unam,$courseid);
3307: foreach my $key (keys(%roleshash)) {
3308: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
3309: my $section=$1;
3310: if ($key eq $courseid.'_st') { $section=''; }
3311: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
3312: my $now=time;
3313: if (defined($end) && $end && ($now > $end)) {
3314: $Expired{$end}=$section;
3315: next;
3316: }
3317: if (defined($start) && $start && ($now < $start)) {
3318: $Pending{$start}=$section;
3319: next;
3320: }
3321: return &do_cache_new('getsection',$hashid,$section,$cachetime);
3322: }
3323: #
3324: # Presumedly there will be few matching roles from the above
3325: # loop and the sorting time will be negligible.
3326: if (scalar(keys(%Pending))) {
3327: my ($time) = sort {$a <=> $b} keys(%Pending);
3328: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
3329: }
3330: if (scalar(keys(%Expired))) {
3331: my @sorted = sort {$a <=> $b} keys(%Expired);
3332: my $time = pop(@sorted);
3333: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
3334: }
3335: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
3336: }
3337:
3338: sub save_cache {
3339: &purge_remembered();
3340: #&Apache::loncommon::validate_page();
3341: undef(%env);
3342: undef($env_loaded);
3343: }
3344:
3345: my $to_remember=-1;
3346: my %remembered;
3347: my %accessed;
3348: my $kicks=0;
3349: my $hits=0;
3350: sub make_key {
3351: my ($name,$id) = @_;
3352: if (length($id) > 65
3353: && length(&escape($id)) > 200) {
3354: $id=length($id).':'.&Digest::MD5::md5_hex($id);
3355: }
3356: return &escape($name.':'.$id);
3357: }
3358:
3359: sub devalidate_cache_new {
3360: my ($name,$id,$debug) = @_;
3361: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
3362: my $remembered_id=$name.':'.$id;
3363: $id=&make_key($name,$id);
3364: $memcache->delete($id);
3365: delete($remembered{$remembered_id});
3366: delete($accessed{$remembered_id});
3367: }
3368:
3369: sub is_cached_new {
3370: my ($name,$id,$debug) = @_;
3371: my $remembered_id=$name.':'.$id; # this is to avoid make_key (which is slow) whenever possible
3372: if (exists($remembered{$remembered_id})) {
3373: if ($debug) { &Apache::lonnet::logthis("Early return $remembered_id of $remembered{$remembered_id} "); }
3374: $accessed{$remembered_id}=[&gettimeofday()];
3375: $hits++;
3376: return ($remembered{$remembered_id},1);
3377: }
3378: $id=&make_key($name,$id);
3379: my $value = $memcache->get($id);
3380: if (!(defined($value))) {
3381: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
3382: return (undef,undef);
3383: }
3384: if ($value eq '__undef__') {
3385: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
3386: $value=undef;
3387: }
3388: &make_room($remembered_id,$value,$debug);
3389: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
3390: return ($value,1);
3391: }
3392:
3393: sub do_cache_new {
3394: my ($name,$id,$value,$time,$debug) = @_;
3395: my $remembered_id=$name.':'.$id;
3396: $id=&make_key($name,$id);
3397: my $setvalue=$value;
3398: if (!defined($setvalue)) {
3399: $setvalue='__undef__';
3400: }
3401: if (!defined($time) ) {
3402: $time=600;
3403: }
3404: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
3405: my $result = $memcache->set($id,$setvalue,$time);
3406: if (! $result) {
3407: &logthis("caching of id -> $id failed");
3408: $memcache->disconnect_all();
3409: }
3410: # need to make a copy of $value
3411: &make_room($remembered_id,$value,$debug);
3412: return $value;
3413: }
3414:
3415: sub make_room {
3416: my ($remembered_id,$value,$debug)=@_;
3417:
3418: $remembered{$remembered_id}= (ref($value)) ? &Storable::dclone($value)
3419: : $value;
3420: if ($to_remember<0) { return; }
3421: $accessed{$remembered_id}=[&gettimeofday()];
3422: if (scalar(keys(%remembered)) <= $to_remember) { return; }
3423: my $to_kick;
3424: my $max_time=0;
3425: foreach my $other (keys(%accessed)) {
3426: if (&tv_interval($accessed{$other}) > $max_time) {
3427: $to_kick=$other;
3428: $max_time=&tv_interval($accessed{$other});
3429: }
3430: }
3431: delete($remembered{$to_kick});
3432: delete($accessed{$to_kick});
3433: $kicks++;
3434: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
3435: return;
3436: }
3437:
3438: sub purge_remembered {
3439: #&logthis("Tossing ".scalar(keys(%remembered)));
3440: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
3441: undef(%remembered);
3442: undef(%accessed);
3443: }
3444: # ------------------------------------- Read an entry from a user's environment
3445:
3446: sub userenvironment {
3447: my ($udom,$unam,@what)=@_;
3448: my $items;
3449: foreach my $item (@what) {
3450: $items.=&escape($item).'&';
3451: }
3452: $items=~s/\&$//;
3453: my %returnhash=();
3454: my $uhome = &homeserver($unam,$udom);
3455: unless ($uhome eq 'no_host') {
3456: my @answer=split(/\&/,
3457: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
3458: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
3459: return %returnhash;
3460: }
3461: my $i;
3462: for ($i=0;$i<=$#what;$i++) {
3463: $returnhash{$what[$i]}=&unescape($answer[$i]);
3464: }
3465: }
3466: return %returnhash;
3467: }
3468:
3469: # ---------------------------------------------------------- Get a studentphoto
3470: sub studentphoto {
3471: my ($udom,$unam,$ext) = @_;
3472: my $home=&homeserver($unam,$udom);
3473: if (defined($env{'request.course.id'})) {
3474: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
3475: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
3476: return(&retrievestudentphoto($udom,$unam,$ext));
3477: } else {
3478: my ($result,$perm_reqd)=
3479: &auto_photo_permission($unam,$udom);
3480: if ($result eq 'ok') {
3481: if (!($perm_reqd eq 'yes')) {
3482: return(&retrievestudentphoto($udom,$unam,$ext));
3483: }
3484: }
3485: }
3486: }
3487: } else {
3488: my ($result,$perm_reqd) =
3489: &auto_photo_permission($unam,$udom);
3490: if ($result eq 'ok') {
3491: if (!($perm_reqd eq 'yes')) {
3492: return(&retrievestudentphoto($udom,$unam,$ext));
3493: }
3494: }
3495: }
3496: return '/adm/lonKaputt/lonlogo_broken.gif';
3497: }
3498:
3499: sub retrievestudentphoto {
3500: my ($udom,$unam,$ext,$type) = @_;
3501: my $home=&homeserver($unam,$udom);
3502: my $ret=&reply("studentphoto:$udom:$unam:$ext:$type",$home);
3503: if ($ret eq 'ok') {
3504: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
3505: if ($type eq 'thumbnail') {
3506: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
3507: }
3508: my $tokenurl=&tokenwrapper($url);
3509: return $tokenurl;
3510: } else {
3511: if ($type eq 'thumbnail') {
3512: return '/adm/lonKaputt/genericstudent_tn.gif';
3513: } else {
3514: return '/adm/lonKaputt/lonlogo_broken.gif';
3515: }
3516: }
3517: }
3518:
3519: # -------------------------------------------------------------------- New chat
3520:
3521: sub chatsend {
3522: my ($newentry,$anon,$group)=@_;
3523: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
3524: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3525: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
3526: &reply('chatsend:'.$cdom.':'.$cnum.':'.
3527: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
3528: &escape($newentry)).':'.$group,$chome);
3529: }
3530:
3531: # ------------------------------------------ Find current version of a resource
3532:
3533: sub getversion {
3534: my $fname=&clutter(shift);
3535: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
3536: return ¤tversion(&filelocation('',$fname));
3537: }
3538:
3539: sub currentversion {
3540: my $fname=shift;
3541: my $author=$fname;
3542: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3543: my ($udom,$uname)=split(/\//,$author);
3544: my $home=&homeserver($uname,$udom);
3545: if ($home eq 'no_host') {
3546: return -1;
3547: }
3548: my $answer=&reply("currentversion:$fname",$home);
3549: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3550: return -1;
3551: }
3552: return $answer;
3553: }
3554:
3555: #
3556: # Return special version number of resource if set by override, empty otherwise
3557: #
3558: sub usedversion {
3559: my $fname=shift;
3560: unless ($fname) { $fname=$env{'request.uri'}; }
3561: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
3562: if ($urlversion) { return $urlversion; }
3563: return '';
3564: }
3565:
3566: # ----------------------------- Subscribe to a resource, return URL if possible
3567:
3568: sub subscribe {
3569: my $fname=shift;
3570: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
3571: $fname=~s/[\n\r]//g;
3572: my $author=$fname;
3573: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3574: my ($udom,$uname)=split(/\//,$author);
3575: my $home=homeserver($uname,$udom);
3576: if ($home eq 'no_host') {
3577: return 'not_found';
3578: }
3579: my $answer=reply("sub:$fname",$home);
3580: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3581: $answer.=' by '.$home;
3582: }
3583: return $answer;
3584: }
3585:
3586: # -------------------------------------------------------------- Replicate file
3587:
3588: sub repcopy {
3589: my $filename=shift;
3590: $filename=~s/\/+/\//g;
3591: my $londocroot = $perlvar{'lonDocRoot'};
3592: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
3593: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
3594: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
3595: $filename=~m{^/*(uploaded|editupload)/}) {
3596: return &repcopy_userfile($filename);
3597: }
3598: $filename=~s/[\n\r]//g;
3599: my $transname="$filename.in.transfer";
3600: # FIXME: this should flock
3601: if ((-e $filename) || (-e $transname)) { return 'ok'; }
3602: my $remoteurl=subscribe($filename);
3603: if ($remoteurl =~ /^con_lost by/) {
3604: &logthis("Subscribe returned $remoteurl: $filename");
3605: return 'unavailable';
3606: } elsif ($remoteurl eq 'not_found') {
3607: #&logthis("Subscribe returned not_found: $filename");
3608: return 'not_found';
3609: } elsif ($remoteurl =~ /^rejected by/) {
3610: &logthis("Subscribe returned $remoteurl: $filename");
3611: return 'forbidden';
3612: } elsif ($remoteurl eq 'directory') {
3613: return 'ok';
3614: } else {
3615: my $author=$filename;
3616: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3617: my ($udom,$uname)=split(/\//,$author);
3618: my $home=homeserver($uname,$udom);
3619: unless ($home eq $perlvar{'lonHostID'}) {
3620: my @parts=split(/\//,$filename);
3621: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
3622: if ($path ne "$londocroot/res") {
3623: &logthis("Malconfiguration for replication: $filename");
3624: return 'bad_request';
3625: }
3626: my $count;
3627: for ($count=5;$count<$#parts;$count++) {
3628: $path.="/$parts[$count]";
3629: if ((-e $path)!=1) {
3630: mkdir($path,0777);
3631: }
3632: }
3633: my $request=new HTTP::Request('GET',"$remoteurl");
3634: my $response;
3635: if ($remoteurl =~ m{/raw/}) {
3636: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',0,1);
3637: } else {
3638: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',1);
3639: }
3640: if ($response->is_error()) {
3641: unlink($transname);
3642: my $message=$response->status_line;
3643: &logthis("<font color=\"blue\">WARNING:"
3644: ." LWP get: $message: $filename</font>");
3645: return 'unavailable';
3646: } else {
3647: if ($remoteurl!~/\.meta$/) {
3648: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
3649: my $mresponse;
3650: if ($remoteurl =~ m{/raw/}) {
3651: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',0,1);
3652: } else {
3653: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',1);
3654: }
3655: if ($mresponse->is_error()) {
3656: unlink($filename.'.meta');
3657: &logthis(
3658: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
3659: }
3660: }
3661: rename($transname,$filename);
3662: return 'ok';
3663: }
3664: }
3665: }
3666: }
3667:
3668: # ------------------------------------------------- Unsubscribe from a resource
3669:
3670: sub unsubscribe {
3671: my ($fname) = @_;
3672: my $answer;
3673: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return $answer; }
3674: $fname=~s/[\n\r]//g;
3675: my $author=$fname;
3676: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3677: my ($udom,$uname)=split(/\//,$author);
3678: my $home=homeserver($uname,$udom);
3679: if ($home eq 'no_host') {
3680: $answer = 'no_host';
3681: } elsif (grep { $_ eq $home } ¤t_machine_ids()) {
3682: $answer = 'home';
3683: } else {
3684: my $defdom = $perlvar{'lonDefDomain'};
3685: if (&will_trust('content',$defdom,$udom)) {
3686: $answer = reply("unsub:$fname",$home);
3687: } else {
3688: $answer = 'untrusted';
3689: }
3690: }
3691: return $answer;
3692: }
3693:
3694: # ------------------------------------------------ Get server side include body
3695: sub ssi_body {
3696: my ($filelink,%form)=@_;
3697: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
3698: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
3699: }
3700: my $output='';
3701: my $response;
3702: if ($filelink=~/^https?\:/) {
3703: ($output,$response)=&externalssi($filelink);
3704: } else {
3705: $filelink .= $filelink=~/\?/ ? '&' : '?';
3706: $filelink .= 'inhibitmenu=yes';
3707: ($output,$response)=&ssi($filelink,%form);
3708: }
3709: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
3710: $output=~s/^.*?\<body[^\>]*\>//si;
3711: $output=~s/\<\/body\s*\>.*?$//si;
3712: if (wantarray) {
3713: return ($output, $response);
3714: } else {
3715: return $output;
3716: }
3717: }
3718:
3719: # --------------------------------------------------------- Server Side Include
3720:
3721: sub absolute_url {
3722: my ($host_name,$unalias,$keep_proto) = @_;
3723: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
3724: if ($host_name eq '') {
3725: $host_name = $ENV{'SERVER_NAME'};
3726: }
3727: if ($unalias) {
3728: my $alias = &get_proxy_alias();
3729: if ($alias eq $host_name) {
3730: my $lonhost = $perlvar{'lonHostID'};
3731: my $hostname = &hostname($lonhost);
3732: my $lcproto;
3733: if (($keep_proto) || ($hostname eq '')) {
3734: $lcproto = $protocol;
3735: } else {
3736: $lcproto = $protocol{$lonhost};
3737: $lcproto = 'http' if ($lcproto ne 'https');
3738: $lcproto .= '://';
3739: }
3740: unless ($hostname eq '') {
3741: return $lcproto.$hostname;
3742: }
3743: }
3744: }
3745: return $protocol.$host_name;
3746: }
3747:
3748: #
3749: # Server side include.
3750: # Parameters:
3751: # fn Possibly encrypted resource name/id.
3752: # form Hash that describes how the rendering should be done
3753: # and other things.
3754: # Returns:
3755: # Scalar context: The content of the response.
3756: # Array context: 2 element list of the content and the full response object.
3757: #
3758: sub ssi {
3759:
3760: my ($fn,%form)=@_;
3761: my ($host,$request,$response);
3762: $host = &absolute_url('',1);
3763:
3764: $form{'no_update_last_known'}=1;
3765: &Apache::lonenc::check_encrypt(\$fn);
3766: if (%form) {
3767: $request=new HTTP::Request('POST',$host.$fn);
3768: $request->content(join('&',map {
3769: my $name = escape($_);
3770: "$name=" . ( ref($form{$_}) eq 'ARRAY'
3771: ? join("&$name=", map {escape($_) } @{$form{$_}})
3772: : &escape($form{$_}) );
3773: } keys(%form)));
3774: } else {
3775: $request=new HTTP::Request('GET',$host.$fn);
3776: }
3777:
3778: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
3779: my $lonhost = $perlvar{'lonHostID'};
3780: my $islocal;
3781: if (($env{'request.course.id'}) &&
3782: ($form{'grade_courseid'} eq $env{'request.course.id'}) &&
3783: ($form{'grade_username'} ne '') && ($form{'grade_domain'} ne '') &&
3784: ($form{'grade_symb'} ne '') &&
3785: (&allowed('mgr',$env{'request.course.id'}.
3786: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:'')))) {
3787: $islocal = 1;
3788: }
3789: $response= &LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,
3790: '','','',$islocal);
3791:
3792: if (wantarray) {
3793: return ($response->content, $response);
3794: } else {
3795: return $response->content;
3796: }
3797: }
3798:
3799: sub externalssi {
3800: my ($url)=@_;
3801: my $request=new HTTP::Request('GET',$url);
3802: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar);
3803: if (wantarray) {
3804: return ($response->content, $response);
3805: } else {
3806: return $response->content;
3807: }
3808: }
3809:
3810:
3811: # If the local copy of a replicated resource is outdated, trigger a
3812: # connection from the homeserver to flush the delayed queue. If no update
3813: # happens, remove local copies of outdated resource (and corresponding
3814: # metadata file).
3815:
3816: sub remove_stale_resfile {
3817: my ($url) = @_;
3818: my $removed;
3819: if ($url=~m{^/res/($match_domain)/($match_username)/}) {
3820: my $audom = $1;
3821: my $auname = $2;
3822: unless (($url =~ /\.\d+\.\w+$/) || ($url =~ m{^/res/lib/templates/})) {
3823: my $homeserver = &homeserver($auname,$audom);
3824: unless (($homeserver eq 'no_host') ||
3825: (grep { $_ eq $homeserver } ¤t_machine_ids())) {
3826: my $fname = &filelocation('',$url);
3827: if (-e $fname) {
3828: my $hostname = &hostname($homeserver);
3829: if ($hostname) {
3830: my $protocol = $protocol{$homeserver};
3831: $protocol = 'http' if ($protocol ne 'https');
3832: my $uri = &declutter($url);
3833: my $request=new HTTP::Request('HEAD',$protocol.'://'.$hostname.'/raw/'.$uri);
3834: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,5,0,1);
3835: if ($response->is_success()) {
3836: my $remmodtime = &HTTP::Date::str2time( $response->header('Last-modified') );
3837: my $locmodtime = (stat($fname))[9];
3838: if ($locmodtime < $remmodtime) {
3839: my $stale;
3840: my $answer = &reply('pong',$homeserver);
3841: if ($answer eq $homeserver.':'.$perlvar{'lonHostID'}) {
3842: sleep(0.2);
3843: $locmodtime = (stat($fname))[9];
3844: if ($locmodtime < $remmodtime) {
3845: my $posstransfer = $fname.'.in.transfer';
3846: if ((-e $posstransfer) && ($remmodtime < (stat($posstransfer))[9])) {
3847: $removed = 1;
3848: } else {
3849: $stale = 1;
3850: }
3851: } else {
3852: $removed = 1;
3853: }
3854: } else {
3855: $stale = 1;
3856: }
3857: if ($stale) {
3858: if (unlink($fname)) {
3859: if ($uri!~/\.meta$/) {
3860: if (-e $fname.'.meta') {
3861: unlink($fname.'.meta');
3862: }
3863: }
3864: my $unsubresult = &unsubscribe($fname);
3865: unless ($unsubresult eq 'ok') {
3866: &logthis("no unsub of $fname from $homeserver, reason: $unsubresult");
3867: }
3868: $removed = 1;
3869: }
3870: }
3871: }
3872: }
3873: }
3874: }
3875: }
3876: }
3877: }
3878: return $removed;
3879: }
3880:
3881: # -------------------------------- Allow a /uploaded/ URI to be vouched for
3882:
3883: sub allowuploaded {
3884: my ($srcurl,$url)=@_;
3885: $url=&clutter(&declutter($url));
3886: my $dir=$url;
3887: $dir=~s/\/[^\/]+$//;
3888: my %httpref=();
3889: my $httpurl=&hreflocation('',$url);
3890: $httpref{'httpref.'.$httpurl}=$srcurl;
3891: &Apache::lonnet::appenv(\%httpref);
3892: }
3893:
3894: #
3895: # Determine if the current user should be able to edit a particular resource,
3896: # when viewing in course context.
3897: # (a) When viewing resource used to determine if "Edit" item is included in
3898: # Functions.
3899: # (b) When displaying folder contents in course editor, used to determine if
3900: # "Edit" link will be displayed alongside resource.
3901: #
3902: # input: six args -- filename (decluttered), course number, course domain,
3903: # url, symb (if registered) and group (if this is a group
3904: # item -- e.g., bulletin board, group page etc.).
3905: # output: array of five scalars --
3906: # $cfile -- url for file editing if editable on current server
3907: # $home -- homeserver of resource (i.e., for author if published,
3908: # or course if uploaded.).
3909: # $switchserver -- 1 if server switch will be needed.
3910: # $forceedit -- 1 if icon/link should be to go to edit mode
3911: # $forceview -- 1 if icon/link should be to go to view mode
3912: #
3913:
3914: sub can_edit_resource {
3915: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
3916: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
3917: #
3918: # For aboutme pages user can only edit his/her own.
3919: #
3920: if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
3921: my ($sdom,$sname) = ($1,$2);
3922: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
3923: $home = $env{'user.home'};
3924: $cfile = $resurl;
3925: if ($env{'form.forceedit'}) {
3926: $forceview = 1;
3927: } else {
3928: $forceedit = 1;
3929: }
3930: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3931: } else {
3932: return;
3933: }
3934: }
3935:
3936: #
3937: # For /adm/viewcoauthors can only edit if author or co-author who is manager.
3938: #
3939:
3940: if (($resurl eq '/adm/viewcoauthors') && ($cnum ne '') && ($cdom ne '')) {
3941: if (((&allowed('cca',"$cdom/$cnum")) ||
3942: (&allowed('caa',"$cdom/$cnum"))) ||
3943: ((&allowed('vca',"$cdom/$cnum") ||
3944: &allowed('vaa',"$cdom/$cnum")) &&
3945: ($env{"environment.internal.manager./$cdom/$cnum"}))) {
3946: $home = $env{'user.home'};
3947: $cfile = $resurl;
3948: if ($env{'form.forceedit'}) {
3949: $forceview = 1;
3950: } else {
3951: $forceedit = 1;
3952: }
3953: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3954: } else {
3955: return;
3956: }
3957: }
3958:
3959: if ($env{'request.course.id'}) {
3960: my $crsedit = &allowed('mdc',$env{'request.course.id'});
3961: if ($group ne '') {
3962: # if this is a group homepage or group bulletin board, check group privs
3963: my $allowed = 0;
3964: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
3965: if ((&allowed('mdg',$env{'request.course.id'}.
3966: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3967: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3968: $allowed = 1;
3969: }
3970: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
3971: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3972: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3973: $allowed = 1;
3974: }
3975: }
3976: if ($allowed) {
3977: $home=&homeserver($cnum,$cdom);
3978: if ($env{'form.forceedit'}) {
3979: $forceview = 1;
3980: } else {
3981: $forceedit = 1;
3982: }
3983: $cfile = $resurl;
3984: } else {
3985: return;
3986: }
3987: } else {
3988: if ($resurl =~ m{^/?adm/viewclasslist$}) {
3989: unless (&allowed('opa',$env{'request.course.id'})) {
3990: return;
3991: }
3992: } elsif (!$crsedit) {
3993: if ($env{'request.role'} =~ m{^st\./$cdom/$cnum}) {
3994: #
3995: # No edit allowed where CC has switched to student role.
3996: #
3997: return;
3998: } elsif (($resurl !~ m{^/res/$match_domain/$match_username/}) ||
3999: ($resurl =~ m{^/res/lib/templates/})) {
4000: return;
4001: }
4002: }
4003: }
4004: }
4005:
4006: if ($file ne '') {
4007: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
4008: if (&is_course_upload($file,$cnum,$cdom)) {
4009: $uploaded = 1;
4010: $incourse = 1;
4011: if ($file =~/\.(htm|html|css|js|txt)$/) {
4012: $cfile = &hreflocation('',$file);
4013: if ($env{'form.forceedit'}) {
4014: $forceview = 1;
4015: } else {
4016: $forceedit = 1;
4017: }
4018: }
4019: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
4020: $incourse = 1;
4021: if ($env{'form.forceedit'}) {
4022: $forceview = 1;
4023: } else {
4024: $forceedit = 1;
4025: }
4026: $cfile = $resurl;
4027: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
4028: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
4029: $incourse = 1;
4030: if ($env{'form.forceedit'}) {
4031: $forceview = 1;
4032: } else {
4033: $forceedit = 1;
4034: }
4035: $cfile = $resurl;
4036: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem') {
4037: $incourse = 1;
4038: $cfile = $resurl.'/smpedit';
4039: } elsif ($resurl =~ m{^/adm/wrapper/ext/}) {
4040: $incourse = 1;
4041: if ($env{'form.forceedit'}) {
4042: $forceview = 1;
4043: } else {
4044: $forceedit = 1;
4045: }
4046: $cfile = $resurl;
4047: } elsif (($resurl =~ m{^/ext/}) && ($symb ne '')) {
4048: my ($map,$id,$res) = &decode_symb($symb);
4049: if ($map =~ /\.page$/) {
4050: $incourse = 1;
4051: if ($env{'form.forceedit'}) {
4052: $forceview = 1;
4053: $cfile = $map;
4054: } else {
4055: $forceedit = 1;
4056: $cfile = '/adm/wrapper'.$resurl;
4057: }
4058: }
4059: } elsif ($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) {
4060: $incourse = 1;
4061: if ($env{'form.forceedit'}) {
4062: $forceview = 1;
4063: } else {
4064: $forceedit = 1;
4065: }
4066: $cfile = $resurl;
4067: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
4068: $incourse = 1;
4069: if ($env{'form.forceedit'}) {
4070: $forceview = 1;
4071: } else {
4072: $forceedit = 1;
4073: }
4074: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
4075: }
4076: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
4077: my $template = '/res/lib/templates/simpleproblem.problem';
4078: if (&is_on_map($template)) {
4079: $incourse = 1;
4080: $forceview = 1;
4081: $cfile = $template;
4082: }
4083: } elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
4084: $incourse = 1;
4085: if ($env{'form.forceedit'}) {
4086: $forceview = 1;
4087: } else {
4088: $forceedit = 1;
4089: }
4090: $cfile = $resurl;
4091: } elsif (($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
4092: $incourse = 1;
4093: if ($env{'form.forceedit'}) {
4094: $forceview = 1;
4095: } else {
4096: $forceedit = 1;
4097: }
4098: $cfile = $resurl;
4099: } elsif (($resurl eq '/adm/extresedit') && ($symb || $env{'form.folderpath'})) {
4100: $incourse = 1;
4101: $forceview = 1;
4102: if ($symb) {
4103: my ($map,$id,$res)=&decode_symb($symb);
4104: $env{'request.symb'} = $symb;
4105: $cfile = &clutter($res);
4106: } else {
4107: $cfile = $env{'form.suppurl'};
4108: my $escfile = &unescape($cfile);
4109: if ($escfile =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}) {
4110: $cfile = '/adm/wrapper'.$escfile;
4111: } else {
4112: $escfile =~ s{^http://}{};
4113: $cfile = &escape("/adm/wrapper/ext/$escfile");
4114: }
4115: }
4116: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
4117: if ($env{'form.forceedit'}) {
4118: $forceview = 1;
4119: } else {
4120: $forceedit = 1;
4121: }
4122: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
4123: }
4124: }
4125: if ($uploaded || $incourse) {
4126: $home=&homeserver($cnum,$cdom);
4127: } elsif ($file !~ m{/$}) {
4128: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
4129: $file=~s{^($match_domain/$match_username)}{/priv/$1};
4130: # Check that the user has permission to edit this resource
4131: my $setpriv = 1;
4132: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
4133: if (defined($cfudom)) {
4134: $home=&homeserver($cfuname,$cfudom);
4135: $cfile=$file;
4136: }
4137: }
4138: if (($cfile ne '') && (!$incourse || $uploaded) &&
4139: (($home ne '') && ($home ne 'no_host'))) {
4140: my @ids=¤t_machine_ids();
4141: unless (grep(/^\Q$home\E$/,@ids)) {
4142: $switchserver=1;
4143: }
4144: }
4145: }
4146: return ($cfile,$home,$switchserver,$forceedit,$forceview);
4147: }
4148:
4149: sub is_course_upload {
4150: my ($file,$cnum,$cdom) = @_;
4151: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
4152: $uploadpath =~ s{^\/}{};
4153: if (($file =~ m{^\Q$uploadpath\E/userfiles/(docs|supplemental)/}) ||
4154: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/})) {
4155: return 1;
4156: }
4157: return;
4158: }
4159:
4160: sub in_course {
4161: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
4162: if ($hideprivileged) {
4163: my $skipuser;
4164: my %coursehash = &coursedescription($cdom.'_'.$cnum);
4165: my @possdoms = ($cdom);
4166: if ($coursehash{'checkforpriv'}) {
4167: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
4168: }
4169: if (&privileged($uname,$udom,\@possdoms)) {
4170: $skipuser = 1;
4171: if ($coursehash{'nothideprivileged'}) {
4172: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4173: my $user;
4174: if ($item =~ /:/) {
4175: $user = $item;
4176: } else {
4177: $user = join(':',split(/[\@]/,$item));
4178: }
4179: if ($user eq $uname.':'.$udom) {
4180: undef($skipuser);
4181: last;
4182: }
4183: }
4184: }
4185: if ($skipuser) {
4186: return 0;
4187: }
4188: }
4189: }
4190: $type ||= 'any';
4191: if (!defined($cdom) || !defined($cnum)) {
4192: my $cid = $env{'request.course.id'};
4193: $cdom = $env{'course.'.$cid.'.domain'};
4194: $cnum = $env{'course.'.$cid.'.num'};
4195: }
4196: my $typesref;
4197: if (($type eq 'any') || ($type eq 'all')) {
4198: $typesref = ['active','previous','future'];
4199: } elsif ($type eq 'previous' || $type eq 'future') {
4200: $typesref = [$type];
4201: }
4202: my %roles = &get_my_roles($uname,$udom,'userroles',
4203: $typesref,undef,[$cdom]);
4204: my ($tmp) = keys(%roles);
4205: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
4206: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
4207: if (@course_roles > 0) {
4208: return 1;
4209: }
4210: return 0;
4211: }
4212:
4213: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
4214: # input: action, courseID, current domain, intended
4215: # path to file, source of file, instruction to parse file for objects,
4216: # ref to hash for embedded objects,
4217: # ref to hash for codebase of java objects.
4218: # reference to scalar to accommodate mime type determined
4219: # from File::MMagic if $parser = parse.
4220: #
4221: # output: url to file (if action was uploaddoc),
4222: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
4223: #
4224: # Allows directory structure to be used within lonUsers/../userfiles/ for a
4225: # course.
4226: #
4227: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
4228: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
4229: # course's home server.
4230: #
4231: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
4232: # be copied from $source (current location) to
4233: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
4234: # and will then be copied to
4235: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
4236: # course's home server.
4237: #
4238: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
4239: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
4240: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
4241: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
4242: # in course's home server.
4243: #
4244:
4245: sub process_coursefile {
4246: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
4247: $mimetype)=@_;
4248: my $fetchresult;
4249: my $home=&homeserver($docuname,$docudom);
4250: if ($action eq 'propagate') {
4251: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
4252: $home);
4253: } else {
4254: my $fpath = '';
4255: my $fname = $file;
4256: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
4257: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
4258: my $filepath = &build_filepath($fpath);
4259: if ($action eq 'copy') {
4260: if ($source eq '') {
4261: $fetchresult = 'no source file';
4262: return $fetchresult;
4263: } else {
4264: my $destination = $filepath.'/'.$fname;
4265: rename($source,$destination);
4266: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
4267: $home);
4268: }
4269: } elsif ($action eq 'uploaddoc') {
4270: open(my $fh,'>',$filepath.'/'.$fname);
4271: print $fh $env{'form.'.$source};
4272: close($fh);
4273: if ($parser eq 'parse') {
4274: my $mm = new File::MMagic;
4275: my $type = $mm->checktype_filename($filepath.'/'.$fname);
4276: if ($type eq 'text/html') {
4277: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
4278: unless ($parse_result eq 'ok') {
4279: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
4280: }
4281: }
4282: if (ref($mimetype)) {
4283: $$mimetype = $type;
4284: }
4285: }
4286: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
4287: $home);
4288: if ($fetchresult eq 'ok') {
4289: return '/uploaded/'.$fpath.'/'.$fname;
4290: } else {
4291: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
4292: ' to host '.$home.': '.$fetchresult);
4293: return '/adm/notfound.html';
4294: }
4295: }
4296: }
4297: unless ( $fetchresult eq 'ok') {
4298: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
4299: ' to host '.$home.': '.$fetchresult);
4300: }
4301: return $fetchresult;
4302: }
4303:
4304: sub build_filepath {
4305: my ($fpath) = @_;
4306: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
4307: unless ($fpath eq '') {
4308: my @parts=split('/',$fpath);
4309: foreach my $part (@parts) {
4310: $filepath.= '/'.$part;
4311: if ((-e $filepath)!=1) {
4312: mkdir($filepath,0777);
4313: }
4314: }
4315: }
4316: return $filepath;
4317: }
4318:
4319: sub store_edited_file {
4320: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
4321: my $file = $primary_url;
4322: $file =~ s#^/uploaded/$docudom/$docuname/##;
4323: my $fpath = '';
4324: my $fname = $file;
4325: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
4326: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
4327: my $filepath = &build_filepath($fpath);
4328: open(my $fh,'>',$filepath.'/'.$fname);
4329: print $fh $content;
4330: close($fh);
4331: my $home=&homeserver($docuname,$docudom);
4332: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
4333: $home);
4334: if ($$fetchresult eq 'ok') {
4335: return '/uploaded/'.$fpath.'/'.$fname;
4336: } else {
4337: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
4338: ' to host '.$home.': '.$$fetchresult);
4339: return '/adm/notfound.html';
4340: }
4341: }
4342:
4343: sub clean_filename {
4344: my ($fname,$args)=@_;
4345: # Replace Windows backslashes by forward slashes
4346: $fname=~s/\\/\//g;
4347: if (!$args->{'keep_path'}) {
4348: # Get rid of everything but the actual filename
4349: $fname=~s/^.*\/([^\/]+)$/$1/;
4350: }
4351: # Replace spaces by underscores
4352: $fname=~s/\s+/\_/g;
4353: # Transliterate non-ascii text to ascii
4354: my $lang = &Apache::lonlocal::current_language();
4355: $fname = &LONCAPA::transliterate::fname_to_ascii($fname,$lang);
4356: # Replace all other weird characters by nothing
4357: $fname=~s{[^/\w\.\-]}{}g;
4358: # Replace all .\d. sequences with _\d. so they no longer look like version
4359: # numbers
4360: $fname=~s/\.(\d+)(?=\.)/_$1/g;
4361: # Replace three or more adjacent underscores with one for consistency
4362: # with loncfile::filename_check() so complete url can be extracted by
4363: # lonnet::decode_symb()
4364: $fname=~s/_{3,}/_/g;
4365: return $fname;
4366: }
4367:
4368: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
4369: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
4370: # image with the same aspect ratio as the original, but with dimensions which do
4371: # not exceed $resizewidth and $resizeheight.
4372:
4373: sub resizeImage {
4374: my ($img_path,$resizewidth,$resizeheight) = @_;
4375: my $ima = Image::Magick->new;
4376: my $resized;
4377: if (-e $img_path) {
4378: $ima->Read($img_path);
4379: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
4380: my $width = $ima->Get('width');
4381: my $height = $ima->Get('height');
4382: if ($width > $resizewidth) {
4383: my $factor = $width/$resizewidth;
4384: my $newheight = $height/$factor;
4385: $ima->Scale(width=>$resizewidth,height=>$newheight);
4386: $resized = 1;
4387: }
4388: }
4389: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
4390: my $width = $ima->Get('width');
4391: my $height = $ima->Get('height');
4392: if ($height > $resizeheight) {
4393: my $factor = $height/$resizeheight;
4394: my $newwidth = $width/$factor;
4395: $ima->Scale(width=>$newwidth,height=>$resizeheight);
4396: $resized = 1;
4397: }
4398: }
4399: if ($resized) {
4400: $ima->Write($img_path);
4401: }
4402: }
4403: return;
4404: }
4405:
4406: # --------------- Take an uploaded file and put it into the userfiles directory
4407: # input: $formname - the contents of the file are in $env{"form.$formname"}
4408: # the desired filename is in $env{"form.$formname.filename"}
4409: # $context - possible values: coursedoc, existingfile, overwrite,
4410: # canceloverwrite, scantron, toollogo or ''.
4411: # if 'coursedoc': upload to the current course
4412: # if 'existingfile': write file to tmp/overwrites directory
4413: # if 'canceloverwrite': delete file written to tmp/overwrites directory
4414: # $context is passed as argument to &finishuserfileupload
4415: # $subdir - directory in userfile to store the file into
4416: # $parser - instruction to parse file for objects ($parser = parse) or
4417: # if context is 'scantron', $parser is hashref of csv column mapping
4418: # (e.g.,{ PaperID => 0, LastName => 1, FirstName => 2, ID => 3,
4419: # Section => 4, CODE => 5, FirstQuestion => 9 }).
4420: # $allfiles - reference to hash for embedded objects
4421: # $codebase - reference to hash for codebase of java objects
4422: # $destuname - username for permanent storage of uploaded file
4423: # $destudom - domain for permanaent storage of uploaded file
4424: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
4425: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
4426: # $resizewidth - width (pixels) to which to resize uploaded image
4427: # $resizeheight - height (pixels) to which to resize uploaded image
4428: # $mimetype - reference to scalar to accommodate mime type determined
4429: # from File::MMagic.
4430: #
4431: # output: url of file in userspace, or error: <message>
4432: # or /adm/notfound.html if failure to upload occurse
4433:
4434: sub userfileupload {
4435: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
4436: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
4437: if (!defined($subdir)) { $subdir='unknown'; }
4438: my $fname=$env{'form.'.$formname.'.filename'};
4439: $fname=&clean_filename($fname);
4440: # See if there is anything left
4441: unless ($fname) { return 'error: no uploaded file'; }
4442: # If filename now begins with a . prepend unix timestamp _ milliseconds
4443: if ($fname =~ /^\./) {
4444: my ($s,$usec) = &gettimeofday();
4445: while (length($usec) < 6) {
4446: $usec = '0'.$usec;
4447: }
4448: $fname = $s.'_'.substr($usec,0,3).$fname;
4449: }
4450: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
4451: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
4452: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
4453: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
4454: my $now = time;
4455: my $filepath;
4456: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
4457: $filepath = 'tmp/helprequests/'.$now;
4458: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
4459: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
4460: '_'.$env{'user.domain'}.'/pending';
4461: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
4462: my ($docuname,$docudom);
4463: if ($destudom =~ /^$match_domain$/) {
4464: $docudom = $destudom;
4465: } else {
4466: $docudom = $env{'user.domain'};
4467: }
4468: if ($destuname =~ /^$match_username$/) {
4469: $docuname = $destuname;
4470: } else {
4471: $docuname = $env{'user.name'};
4472: }
4473: if (exists($env{'form.group'})) {
4474: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4475: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4476: }
4477: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
4478: if ($context eq 'canceloverwrite') {
4479: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
4480: if (-e $tempfile) {
4481: my @info = stat($tempfile);
4482: if ($info[9] eq $env{'form.timestamp'}) {
4483: unlink($tempfile);
4484: }
4485: }
4486: return;
4487: }
4488: }
4489: # Create the directory if not present
4490: my @parts=split(/\//,$filepath);
4491: my $fullpath = $perlvar{'lonDaemons'};
4492: for (my $i=0;$i<@parts;$i++) {
4493: $fullpath .= '/'.$parts[$i];
4494: if ((-e $fullpath)!=1) {
4495: mkdir($fullpath,0777);
4496: }
4497: }
4498: open(my $fh,'>',$fullpath.'/'.$fname);
4499: print $fh $env{'form.'.$formname};
4500: close($fh);
4501: if ($context eq 'existingfile') {
4502: my @info = stat($fullpath.'/'.$fname);
4503: return ($fullpath.'/'.$fname,$info[9]);
4504: } else {
4505: return $fullpath.'/'.$fname;
4506: }
4507: }
4508: if ($subdir eq 'scantron') {
4509: $fname = 'scantron_orig_'.$fname;
4510: } else {
4511: $fname="$subdir/$fname";
4512: }
4513: if ($context eq 'coursedoc') {
4514: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4515: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4516: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
4517: return &finishuserfileupload($docuname,$docudom,
4518: $formname,$fname,$parser,$allfiles,
4519: $codebase,$thumbwidth,$thumbheight,
4520: $resizewidth,$resizeheight,$context,$mimetype);
4521: } else {
4522: if ($env{'form.folder'}) {
4523: $fname=$env{'form.folder'}.'/'.$fname;
4524: }
4525: return &process_coursefile('uploaddoc',$docuname,$docudom,
4526: $fname,$formname,$parser,
4527: $allfiles,$codebase,$mimetype);
4528: }
4529: } elsif (defined($destuname)) {
4530: my $docuname=$destuname;
4531: my $docudom=$destudom;
4532: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
4533: $parser,$allfiles,$codebase,
4534: $thumbwidth,$thumbheight,
4535: $resizewidth,$resizeheight,$context,$mimetype);
4536: } else {
4537: my $docuname=$env{'user.name'};
4538: my $docudom=$env{'user.domain'};
4539: if ((exists($env{'form.group'})) || ($context eq 'syllabus')) {
4540: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4541: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4542: }
4543: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
4544: $parser,$allfiles,$codebase,
4545: $thumbwidth,$thumbheight,
4546: $resizewidth,$resizeheight,$context,$mimetype);
4547: }
4548: }
4549:
4550: sub finishuserfileupload {
4551: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
4552: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
4553: my $path=$docudom.'/'.$docuname.'/';
4554: my $filepath=$perlvar{'lonDocRoot'};
4555:
4556: my ($fnamepath,$file,$fetchthumb);
4557: $file=$fname;
4558: if ($fname=~m|/|) {
4559: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
4560: $path.=$fnamepath.'/';
4561: }
4562: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
4563: my $count;
4564: for ($count=4;$count<=$#parts;$count++) {
4565: $filepath.="/$parts[$count]";
4566: if ((-e $filepath)!=1) {
4567: mkdir($filepath,0777);
4568: }
4569: }
4570:
4571: # Save the file
4572: {
4573: if (!open(FH,'>',$filepath.'/'.$file)) {
4574: &logthis('Failed to create '.$filepath.'/'.$file);
4575: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
4576: return '/adm/notfound.html';
4577: }
4578: if ($context eq 'overwrite') {
4579: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
4580: my $target = $filepath.'/'.$file;
4581: if (-e $source) {
4582: my @info = stat($source);
4583: if ($info[9] eq $env{'form.timestamp'}) {
4584: unless (&File::Copy::move($source,$target)) {
4585: &logthis('Failed to overwrite '.$filepath.'/'.$file);
4586: return "Moving from $source failed";
4587: }
4588: } else {
4589: return "Temporary file: $source had unexpected date/time for last modification";
4590: }
4591: } else {
4592: return "Temporary file: $source missing";
4593: }
4594: } elsif (!print FH ($env{'form.'.$formname})) {
4595: &logthis('Failed to write to '.$filepath.'/'.$file);
4596: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
4597: return '/adm/notfound.html';
4598: }
4599: close(FH);
4600: if ($resizewidth && $resizeheight) {
4601: my $mm = new File::MMagic;
4602: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
4603: if ($mime_type =~ m{^image/}) {
4604: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
4605: }
4606: }
4607: }
4608: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
4609: if (ref($mimetype)) {
4610: if ($$mimetype eq '') {
4611: my $mm = new File::MMagic;
4612: my $type = $mm->checktype_filename($filepath.'/'.$file);
4613: $$mimetype = $type;
4614: }
4615: }
4616: }
4617: if (($context ne 'scantron') && ($parser eq 'parse')) {
4618: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
4619: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
4620: $allfiles,$codebase);
4621: unless ($parse_result eq 'ok') {
4622: &logthis('Failed to parse '.$filepath.$file.
4623: ' for embedded media: '.$parse_result);
4624: }
4625: }
4626: } elsif (($context eq 'scantron') && (ref($parser) eq 'HASH')) {
4627: my $format = $env{'form.scantron_format'};
4628: &bubblesheet_converter($docudom,$filepath.'/'.$file,$parser,$format);
4629: }
4630: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
4631: my $input = $filepath.'/'.$file;
4632: my $output = $filepath.'/'.'tn-'.$file;
4633: my $makethumb;
4634: my $thumbsize = $thumbwidth.'x'.$thumbheight;
4635: if ($context eq 'toollogo') {
4636: my ($fullwidth,$fullheight) = &check_dimensions($input);
4637: if ($fullwidth ne '' && $fullheight ne '') {
4638: if ($fullwidth > $thumbwidth && $fullheight > $thumbheight) {
4639: $makethumb = 1;
4640: }
4641: }
4642: } else {
4643: $makethumb = 1;
4644: }
4645: if ($makethumb) {
4646: my @args = ('convert','-sample',$thumbsize,$input,$output);
4647: system({$args[0]} @args);
4648: if (-e $filepath.'/'.'tn-'.$file) {
4649: $fetchthumb = 1;
4650: }
4651: }
4652: }
4653:
4654: # Notify homeserver to grep it
4655: #
4656: my $docuhome=&homeserver($docuname,$docudom);
4657: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
4658: if ($fetchresult eq 'ok') {
4659: if ($fetchthumb) {
4660: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
4661: if ($thumbresult ne 'ok') {
4662: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
4663: $docuhome.': '.$thumbresult);
4664: }
4665: }
4666: #
4667: # Return the URL to it
4668: return '/uploaded/'.$path.$file;
4669: } else {
4670: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
4671: ': '.$fetchresult);
4672: return '/adm/notfound.html';
4673: }
4674: }
4675:
4676: sub extract_embedded_items {
4677: my ($fullpath,$allfiles,$codebase,$content) = @_;
4678: my @state = ();
4679: my (%lastids,%related,%shockwave,%flashvars);
4680: my %javafiles = (
4681: codebase => '',
4682: code => '',
4683: archive => ''
4684: );
4685: my %mediafiles = (
4686: src => '',
4687: movie => '',
4688: );
4689: my $p;
4690: if ($content) {
4691: $p = HTML::LCParser->new($content);
4692: } else {
4693: $p = HTML::LCParser->new($fullpath);
4694: }
4695: while (my $t=$p->get_token()) {
4696: if ($t->[0] eq 'S') {
4697: my ($tagname, $attr) = ($t->[1],$t->[2]);
4698: push(@state, $tagname);
4699: if (lc($tagname) eq 'allow') {
4700: &add_filetype($allfiles,$attr->{'src'},'src');
4701: }
4702: if (lc($tagname) eq 'img') {
4703: &add_filetype($allfiles,$attr->{'src'},'src');
4704: }
4705: if (lc($tagname) eq 'a') {
4706: unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) {
4707: &add_filetype($allfiles,$attr->{'href'},'href');
4708: }
4709: }
4710: if (lc($tagname) eq 'script') {
4711: my $src;
4712: if ($attr->{'archive'} =~ /\.jar$/i) {
4713: &add_filetype($allfiles,$attr->{'archive'},'archive');
4714: } else {
4715: if ($attr->{'src'} ne '') {
4716: $src = $attr->{'src'};
4717: &add_filetype($allfiles,$src,'src');
4718: }
4719: }
4720: my $text = $p->get_trimmed_text();
4721: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
4722: my @swfargs = split(/,/,$1);
4723: foreach my $item (@swfargs) {
4724: $item =~ s/["']//g;
4725: $item =~ s/^\s+//;
4726: $item =~ s/\s+$//;
4727: }
4728: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
4729: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
4730: push(@{$related{$swfargs[0]}},$swfargs[2]);
4731: } else {
4732: $related{$swfargs[0]} = [$swfargs[2]];
4733: }
4734: }
4735: }
4736: }
4737: if (lc($tagname) eq 'link') {
4738: if (lc($attr->{'rel'}) eq 'stylesheet') {
4739: &add_filetype($allfiles,$attr->{'href'},'href');
4740: }
4741: }
4742: if (lc($tagname) eq 'object' ||
4743: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
4744: foreach my $item (keys(%javafiles)) {
4745: $javafiles{$item} = '';
4746: }
4747: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
4748: $lastids{lc($tagname)} = $attr->{'id'};
4749: }
4750: }
4751: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
4752: my $name = lc($attr->{'name'});
4753: foreach my $item (keys(%javafiles)) {
4754: if ($name eq $item) {
4755: $javafiles{$item} = $attr->{'value'};
4756: last;
4757: }
4758: }
4759: my $pathfrom;
4760: foreach my $item (keys(%mediafiles)) {
4761: if ($name eq $item) {
4762: $pathfrom = $attr->{'value'};
4763: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
4764: &add_filetype($allfiles,$pathfrom,$name);
4765: last;
4766: }
4767: }
4768: if ($name eq 'flashvars') {
4769: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
4770: }
4771: if ($pathfrom ne '') {
4772: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
4773: $pathfrom);
4774: }
4775: }
4776: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
4777: foreach my $item (keys(%javafiles)) {
4778: if ($attr->{$item}) {
4779: $javafiles{$item} = $attr->{$item};
4780: last;
4781: }
4782: }
4783: foreach my $item (keys(%mediafiles)) {
4784: if ($attr->{$item}) {
4785: &add_filetype($allfiles,$attr->{$item},$item);
4786: last;
4787: }
4788: }
4789: if (lc($tagname) eq 'embed') {
4790: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
4791: &embedded_dependency($allfiles,\%related,$attr->{'name'},
4792: $attr->{'src'});
4793: }
4794: }
4795: }
4796: if (lc($tagname) eq 'iframe') {
4797: my $src = $attr->{'src'} ;
4798: if (($src ne '') && ($src !~ m{^(/|https?://)})) {
4799: &add_filetype($allfiles,$src,'src');
4800: } elsif ($src =~ m{^/}) {
4801: if ($env{'request.course.id'}) {
4802: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4803: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4804: my $url = &hreflocation('',$fullpath);
4805: if ($url =~ m{^/uploaded/$cdom/$cnum/docs/(\w+/\d+)/}) {
4806: my $relpath = $1;
4807: if ($src =~ m{^/uploaded/$cdom/$cnum/docs/\Q$relpath\E/(.+)$}) {
4808: &add_filetype($allfiles,$1,'src');
4809: }
4810: }
4811: }
4812: }
4813: }
4814: if ($t->[4] =~ m{/>$}) {
4815: pop(@state);
4816: }
4817: } elsif ($t->[0] eq 'E') {
4818: my ($tagname) = ($t->[1]);
4819: if ($javafiles{'codebase'} ne '') {
4820: $javafiles{'codebase'} .= '/';
4821: }
4822: if (lc($tagname) eq 'applet' ||
4823: lc($tagname) eq 'object' ||
4824: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
4825: ) {
4826: foreach my $item (keys(%javafiles)) {
4827: if ($item ne 'codebase' && $javafiles{$item} ne '') {
4828: my $file=$javafiles{'codebase'}.$javafiles{$item};
4829: &add_filetype($allfiles,$file,$item);
4830: }
4831: }
4832: }
4833: pop @state;
4834: }
4835: }
4836: foreach my $id (sort(keys(%flashvars))) {
4837: if ($shockwave{$id} ne '') {
4838: my @pairs = split(/\&/,$flashvars{$id});
4839: foreach my $pair (@pairs) {
4840: my ($key,$value) = split(/\=/,$pair);
4841: if ($key eq 'thumb') {
4842: &add_filetype($allfiles,$value,$key);
4843: } elsif ($key eq 'content') {
4844: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
4845: my ($ext) = ($value =~ /\.([^.]+)$/);
4846: if ($ext ne '') {
4847: &add_filetype($allfiles,$path.$value,$ext);
4848: }
4849: }
4850: }
4851: }
4852: }
4853: return 'ok';
4854: }
4855:
4856: sub add_filetype {
4857: my ($allfiles,$file,$type)=@_;
4858: if (exists($allfiles->{$file})) {
4859: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
4860: push(@{$allfiles->{$file}}, &escape($type));
4861: }
4862: } else {
4863: @{$allfiles->{$file}} = (&escape($type));
4864: }
4865: }
4866:
4867: sub embedded_dependency {
4868: my ($allfiles,$related,$identifier,$pathfrom) = @_;
4869: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
4870: if (($identifier ne '') &&
4871: (ref($related->{$identifier}) eq 'ARRAY') &&
4872: ($pathfrom ne '')) {
4873: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
4874: foreach my $dep (@{$related->{$identifier}}) {
4875: &add_filetype($allfiles,$path.$dep,'object');
4876: }
4877: }
4878: }
4879: return;
4880: }
4881:
4882: sub check_dimensions {
4883: my ($inputfile) = @_;
4884: my ($fullwidth,$fullheight);
4885: if (($inputfile =~ m|^[/\w.\-]+$|) && (-e $inputfile)) {
4886: my $mm = new File::MMagic;
4887: my $mime_type = $mm->checktype_filename($inputfile);
4888: if ($mime_type =~ m{^image/}) {
4889: if (open(PIPE,"identify $inputfile 2>&1 |")) {
4890: my $imageinfo = <PIPE>;
4891: if (!close(PIPE)) {
4892: &Apache::lonnet::logthis("Failed to close PIPE opened to retrieve image information for $inputfile");
4893: }
4894: chomp($imageinfo);
4895: my ($fullsize) =
4896: ($imageinfo =~ /^\Q$inputfile\E\s+\w+\s+(\d+x\d+)/);
4897: if ($fullsize) {
4898: ($fullwidth,$fullheight) = split(/x/,$fullsize);
4899: }
4900: }
4901: }
4902: }
4903: return ($fullwidth,$fullheight);
4904: }
4905:
4906: sub bubblesheet_converter {
4907: my ($cdom,$fullpath,$config,$format) = @_;
4908: if ((&domain($cdom) ne '') &&
4909: ($fullpath =~ m{^\Q$perlvar{'lonDocRoot'}/userfiles/$cdom/\E$match_courseid/scantron_orig}) &&
4910: (-e $fullpath) && (ref($config) eq 'HASH') && ($format ne '')) {
4911: my (%csvcols,%csvoptions);
4912: if (ref($config->{'fields'}) eq 'HASH') {
4913: %csvcols = %{$config->{'fields'}};
4914: }
4915: if (ref($config->{'options'}) eq 'HASH') {
4916: %csvoptions = %{$config->{'options'}};
4917: }
4918: my %csvbynum = reverse(%csvcols);
4919: my %scantronconf = &get_scantron_config($format,$cdom);
4920: if (keys(%scantronconf)) {
4921: my %bynum = (
4922: $scantronconf{CODEstart} => 'CODEstart',
4923: $scantronconf{IDstart} => 'IDstart',
4924: $scantronconf{PaperID} => 'PaperID',
4925: $scantronconf{FirstName} => 'FirstName',
4926: $scantronconf{LastName} => 'LastName',
4927: $scantronconf{Qstart} => 'Qstart',
4928: );
4929: my @ordered;
4930: foreach my $item (sort { $a <=> $b } keys(%bynum)) {
4931: push(@ordered,$bynum{$item});
4932: }
4933: my %mapstart = (
4934: CODEstart => 'CODE',
4935: IDstart => 'ID',
4936: PaperID => 'PaperID',
4937: FirstName => 'FirstName',
4938: LastName => 'LastName',
4939: Qstart => 'FirstQuestion',
4940: );
4941: my %maplength = (
4942: CODEstart => 'CODElength',
4943: IDstart => 'IDlength',
4944: PaperID => 'PaperIDlength',
4945: FirstName => 'FirstNamelength',
4946: LastName => 'LastNamelength',
4947: );
4948: if (open(my $fh,'<',$fullpath)) {
4949: my $output;
4950: my %lettdig = &letter_to_digits();
4951: my %diglett = reverse(%lettdig);
4952: my $numletts = scalar(keys(%lettdig));
4953: my $num = 0;
4954: while (my $line=<$fh>) {
4955: $num ++;
4956: next if (($num == 1) && ($csvoptions{'hdr'} == 1));
4957: $line =~ s{[\r\n]+$}{};
4958: my %found;
4959: my @values = split(/,/,$line,-1);
4960: my ($qstart,$record);
4961: for (my $i=0; $i<@values; $i++) {
4962: if ((($qstart ne '') && ($i > $qstart)) ||
4963: ($csvbynum{$i} eq 'FirstQuestion')) {
4964: if ($values[$i] eq '') {
4965: $values[$i] = $scantronconf{'Qoff'};
4966: } elsif ($scantronconf{'Qon'} eq 'number') {
4967: if ($values[$i] =~ /^[A-Ja-j]$/) {
4968: $values[$i] = $lettdig{uc($values[$i])};
4969: }
4970: } elsif ($scantronconf{'Qon'} eq 'letter') {
4971: if ($values[$i] =~ /^[0-9]$/) {
4972: $values[$i] = $diglett{$values[$i]};
4973: }
4974: } else {
4975: if ($values[$i] =~ /^[0-9A-Ja-j]$/) {
4976: my $digit;
4977: if ($values[$i] =~ /^[A-Ja-j]$/) {
4978: $digit = $lettdig{uc($values[$i])}-1;
4979: if ($values[$i] eq 'J') {
4980: $digit += $numletts;
4981: }
4982: } elsif ($values[$i] =~ /^[0-9]$/) {
4983: $digit = $values[$i]-1;
4984: if ($values[$i] eq '0') {
4985: $digit += $numletts;
4986: }
4987: }
4988: my $qval='';
4989: for (my $j=0; $j<$scantronconf{'Qlength'}; $j++) {
4990: if ($j == $digit) {
4991: $qval .= $scantronconf{'Qon'};
4992: } else {
4993: $qval .= $scantronconf{'Qoff'};
4994: }
4995: }
4996: $values[$i] = $qval;
4997: }
4998: }
4999: if (length($values[$i]) > $scantronconf{'Qlength'}) {
5000: $values[$i] = substr($values[$i],0,$scantronconf{'Qlength'});
5001: }
5002: my $numblank = $scantronconf{'Qlength'} - length($values[$i]);
5003: if ($numblank > 0) {
5004: $values[$i] .= ($scantronconf{'Qoff'} x $numblank);
5005: }
5006: if ($csvbynum{$i} eq 'FirstQuestion') {
5007: $qstart = $i;
5008: $found{$csvbynum{$i}} = $values[$i];
5009: } else {
5010: $found{'FirstQuestion'} .= $values[$i];
5011: }
5012: } elsif (exists($csvbynum{$i})) {
5013: if ($csvoptions{'rem'}) {
5014: $values[$i] =~ s/^\s+//;
5015: }
5016: if (($csvbynum{$i} eq 'PaperID') && ($csvoptions{'pad'})) {
5017: while (length($values[$i]) < $scantronconf{$maplength{$csvbynum{$i}}}) {
5018: $values[$i] = '0'.$values[$i];
5019: }
5020: }
5021: $found{$csvbynum{$i}} = $values[$i];
5022: }
5023: }
5024: foreach my $item (@ordered) {
5025: my $currlength = 1+length($record);
5026: my $numspaces = $scantronconf{$item} - $currlength;
5027: if ($numspaces > 0) {
5028: $record .= (' ' x $numspaces);
5029: }
5030: if (($mapstart{$item} ne '') && (exists($found{$mapstart{$item}}))) {
5031: unless ($item eq 'Qstart') {
5032: if (length($found{$mapstart{$item}}) > $scantronconf{$maplength{$item}}) {
5033: $found{$mapstart{$item}} = substr($found{$mapstart{$item}},0,$scantronconf{$maplength{$item}});
5034: }
5035: }
5036: $record .= $found{$mapstart{$item}};
5037: }
5038: }
5039: $output .= "$record\n";
5040: }
5041: close($fh);
5042: if ($output) {
5043: if (open(my $fh,'>',$fullpath)) {
5044: print $fh $output;
5045: close($fh);
5046: }
5047: }
5048: }
5049: }
5050: return;
5051: }
5052: }
5053:
5054: sub letter_to_digits {
5055: my %lettdig = (
5056: A => 1,
5057: B => 2,
5058: C => 3,
5059: D => 4,
5060: E => 5,
5061: F => 6,
5062: G => 7,
5063: H => 8,
5064: I => 9,
5065: J => 0,
5066: );
5067: return %lettdig;
5068: }
5069:
5070: sub get_scantron_config {
5071: my ($which,$cdom) = @_;
5072: my @lines = &get_scantronformat_file($cdom);
5073: my %config;
5074: #FIXME probably should move to XML it has already gotten a bit much now
5075: foreach my $line (@lines) {
5076: my ($name,$descrip)=split(/:/,$line);
5077: if ($name ne $which ) { next; }
5078: chomp($line);
5079: my @config=split(/:/,$line);
5080: $config{'name'}=$config[0];
5081: $config{'description'}=$config[1];
5082: $config{'CODElocation'}=$config[2];
5083: $config{'CODEstart'}=$config[3];
5084: $config{'CODElength'}=$config[4];
5085: $config{'IDstart'}=$config[5];
5086: $config{'IDlength'}=$config[6];
5087: $config{'Qstart'}=$config[7];
5088: $config{'Qlength'}=$config[8];
5089: $config{'Qoff'}=$config[9];
5090: $config{'Qon'}=$config[10];
5091: $config{'PaperID'}=$config[11];
5092: $config{'PaperIDlength'}=$config[12];
5093: $config{'FirstName'}=$config[13];
5094: $config{'FirstNamelength'}=$config[14];
5095: $config{'LastName'}=$config[15];
5096: $config{'LastNamelength'}=$config[16];
5097: $config{'BubblesPerRow'}=$config[17];
5098: last;
5099: }
5100: return %config;
5101: }
5102:
5103: sub get_scantronformat_file {
5104: my ($cdom) = @_;
5105: if ($cdom eq '') {
5106: $cdom= $env{'course.'.$env{'request.course.id'}.'.domain'};
5107: }
5108: my %domconfig = &get_dom('configuration',['scantron'],$cdom);
5109: my $gottab = 0;
5110: my @lines;
5111: if (ref($domconfig{'scantron'}) eq 'HASH') {
5112: if ($domconfig{'scantron'}{'scantronformat'} ne '') {
5113: my $formatfile = &getfile($perlvar{'lonDocRoot'}.$domconfig{'scantron'}{'scantronformat'});
5114: if ($formatfile ne '-1') {
5115: @lines = split("\n",$formatfile,-1);
5116: $gottab = 1;
5117: }
5118: }
5119: }
5120: if (!$gottab) {
5121: my $confname = $cdom.'-domainconfig';
5122: my $default = $perlvar{'lonDocRoot'}.'/res/'.$cdom.'/'.$confname.'/default.tab';
5123: my $formatfile = &getfile($default);
5124: if ($formatfile ne '-1') {
5125: @lines = split("\n",$formatfile,-1);
5126: $gottab = 1;
5127: }
5128: }
5129: if (!$gottab) {
5130: my @domains = ¤t_machine_domains();
5131: if (grep(/^\Q$cdom\E$/,@domains)) {
5132: if (open(my $fh,'<',$perlvar{'lonTabDir'}.'/scantronformat.tab')) {
5133: @lines = <$fh>;
5134: close($fh);
5135: }
5136: } else {
5137: if (open(my $fh,'<',$perlvar{'lonTabDir'}.'/default_scantronformat.tab')) {
5138: @lines = <$fh>;
5139: close($fh);
5140: }
5141: }
5142: chomp(@lines);
5143: }
5144: return @lines;
5145: }
5146:
5147: sub removeuploadedurl {
5148: my ($url)=@_;
5149: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
5150: return &removeuserfile($uname,$udom,$fname);
5151: }
5152:
5153: sub removeuserfile {
5154: my ($docuname,$docudom,$fname)=@_;
5155: my $home=&homeserver($docuname,$docudom);
5156: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
5157: if ($result eq 'ok') {
5158: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
5159: my $metafile = $fname.'.meta';
5160: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
5161: my $url = "/uploaded/$docudom/$docuname/$fname";
5162: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
5163: my $sqlresult =
5164: &update_portfolio_table($docuname,$docudom,$file,
5165: 'portfolio_metadata',$group,
5166: 'delete');
5167: }
5168: }
5169: return $result;
5170: }
5171:
5172: sub mkdiruserfile {
5173: my ($docuname,$docudom,$dir)=@_;
5174: my $home=&homeserver($docuname,$docudom);
5175: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
5176: }
5177:
5178: sub renameuserfile {
5179: my ($docuname,$docudom,$old,$new)=@_;
5180: my $home=&homeserver($docuname,$docudom);
5181: my $result = &reply("renameuserfile:$docudom:$docuname:".
5182: &escape("$old").':'.&escape("$new"),$home);
5183: if ($result eq 'ok') {
5184: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
5185: my $oldmeta = $old.'.meta';
5186: my $newmeta = $new.'.meta';
5187: my $metaresult =
5188: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
5189: my $url = "/uploaded/$docudom/$docuname/$old";
5190: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
5191: my $sqlresult =
5192: &update_portfolio_table($docuname,$docudom,$file,
5193: 'portfolio_metadata',$group,
5194: 'delete');
5195: }
5196: }
5197: return $result;
5198: }
5199:
5200: # ------------------------------------------------------------------------- Log
5201:
5202: sub log {
5203: my ($dom,$nam,$hom,$what)=@_;
5204: return critical("log:$dom:$nam:$what",$hom);
5205: }
5206:
5207: # ------------------------------------------------------------------ Course Log
5208: #
5209: # This routine flushes several buffers of non-mission-critical nature
5210: #
5211:
5212: sub flushcourselogs {
5213: &logthis('Flushing log buffers');
5214: #
5215: # course logs
5216: # This is a log of all transactions in a course, which can be used
5217: # for data mining purposes
5218: #
5219: # It also collects the courseid database, which lists last transaction
5220: # times and course titles for all courseids
5221: #
5222: my %courseidbuffer=();
5223: foreach my $crsid (keys(%courselogs)) {
5224: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
5225: &escape($courselogs{$crsid}),
5226: $coursehombuf{$crsid}) eq 'ok') {
5227: delete $courselogs{$crsid};
5228: } else {
5229: &logthis('Failed to flush log buffer for '.$crsid);
5230: if (length($courselogs{$crsid})>40000) {
5231: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
5232: " exceeded maximum size, deleting.</font>");
5233: delete $courselogs{$crsid};
5234: }
5235: }
5236: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
5237: 'description' => $coursedescrbuf{$crsid},
5238: 'inst_code' => $courseinstcodebuf{$crsid},
5239: 'type' => $coursetypebuf{$crsid},
5240: 'owner' => $courseownerbuf{$crsid},
5241: };
5242: }
5243: #
5244: # Write course id database (reverse lookup) to homeserver of courses
5245: # Is used in pickcourse
5246: #
5247: foreach my $crs_home (keys(%courseidbuffer)) {
5248: my $response = &courseidput(&host_domain($crs_home),
5249: $courseidbuffer{$crs_home},
5250: $crs_home,'timeonly');
5251: }
5252: #
5253: # File accesses
5254: # Writes to the dynamic metadata of resources to get hit counts, etc.
5255: #
5256: foreach my $entry (keys(%accesshash)) {
5257: if ($entry =~ /___count$/) {
5258: my ($dom,$name);
5259: ($dom,$name,undef)=
5260: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
5261: if (! defined($dom) || $dom eq '' ||
5262: ! defined($name) || $name eq '') {
5263: my $cid = $env{'request.course.id'};
5264: #
5265: # FIXME 11/29/2021
5266: # Typo in rev. 1.458 (2003/12/09)??
5267: # These should likely by $env{'course.'.$cid.'.domain'} and $env{'course.'.$cid.'.num'}
5268: #
5269: # While these remain as $env{'request.'.$cid.'.domain'} and $env{'request.'.$cid.'.num'}
5270: # $dom and $name will always be null, so the &inc() call will default to storing this data
5271: # in a nohist_accesscount.db file for the user rather than the course.
5272: #
5273: # That said there is a lot of noise in the data being stored.
5274: # So counts for prtspool/ and adm/ etc. are recorded.
5275: #
5276: # A review of which items ending '___count' are written to %accesshash should likely be
5277: # made before deciding whether to set these to 'course.' instead of 'request.'
5278: #
5279: # Under the current scheme each user receives a nohist_accesscount.db file listing
5280: # accesses for things which are not published resources, regardless of course, and
5281: # there is not a nohist_accesscount.db file in a course, which might log accesses from
5282: # anyone in the course for things which are not published resources.
5283: #
5284: # For an author, nohist_accesscount.db ends up having records for other items
5285: # mixed up with the legitimate access counts for the author's published resources.
5286: #
5287: $dom = $env{'request.'.$cid.'.domain'};
5288: $name = $env{'request.'.$cid.'.num'};
5289: }
5290: my $value = $accesshash{$entry};
5291: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
5292: my %temphash=($url => $value);
5293: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
5294: if ($result eq 'ok') {
5295: delete $accesshash{$entry};
5296: }
5297: } else {
5298: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
5299: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
5300: my %temphash=($entry => $accesshash{$entry});
5301: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
5302: delete $accesshash{$entry};
5303: }
5304: }
5305: }
5306: #
5307: # Roles
5308: # Reverse lookup of user roles for course faculty/staff and co-authorship
5309: #
5310: foreach my $entry (keys(%userrolehash)) {
5311: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
5312: split(/\:/,$entry);
5313: if (&put('nohist_userroles',
5314: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
5315: $rudom,$runame) eq 'ok') {
5316: delete $userrolehash{$entry};
5317: }
5318: }
5319: #
5320: # Reverse lookup of domain roles (dc, ad, li, sc, dh, da, au)
5321: #
5322: my %domrolebuffer = ();
5323: foreach my $entry (keys(%domainrolehash)) {
5324: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
5325: if ($domrolebuffer{$rudom}) {
5326: $domrolebuffer{$rudom}.='&'.&escape($entry).
5327: '='.&escape($domainrolehash{$entry});
5328: } else {
5329: $domrolebuffer{$rudom}.=&escape($entry).
5330: '='.&escape($domainrolehash{$entry});
5331: }
5332: delete $domainrolehash{$entry};
5333: }
5334: foreach my $dom (keys(%domrolebuffer)) {
5335: my %servers;
5336: if (defined(&domain($dom,'primary'))) {
5337: my $primary=&domain($dom,'primary');
5338: my $hostname=&hostname($primary);
5339: $servers{$primary} = $hostname;
5340: } else {
5341: %servers = &get_servers($dom,'library');
5342: }
5343: foreach my $tryserver (keys(%servers)) {
5344: if (&reply('domroleput:'.$dom.':'.
5345: $domrolebuffer{$dom},$tryserver) eq 'ok') {
5346: last;
5347: } else {
5348: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
5349: }
5350: }
5351: }
5352: $dumpcount++;
5353: }
5354:
5355: sub courselog {
5356: my $what=shift;
5357: $what=time.':'.$what;
5358: unless ($env{'request.course.id'}) { return ''; }
5359: $coursedombuf{$env{'request.course.id'}}=
5360: $env{'course.'.$env{'request.course.id'}.'.domain'};
5361: $coursenumbuf{$env{'request.course.id'}}=
5362: $env{'course.'.$env{'request.course.id'}.'.num'};
5363: $coursehombuf{$env{'request.course.id'}}=
5364: $env{'course.'.$env{'request.course.id'}.'.home'};
5365: $coursedescrbuf{$env{'request.course.id'}}=
5366: $env{'course.'.$env{'request.course.id'}.'.description'};
5367: $courseinstcodebuf{$env{'request.course.id'}}=
5368: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
5369: $courseownerbuf{$env{'request.course.id'}}=
5370: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
5371: $coursetypebuf{$env{'request.course.id'}}=
5372: $env{'course.'.$env{'request.course.id'}.'.type'};
5373: if (defined $courselogs{$env{'request.course.id'}}) {
5374: $courselogs{$env{'request.course.id'}}.='&'.$what;
5375: } else {
5376: $courselogs{$env{'request.course.id'}}.=$what;
5377: }
5378: if (length($courselogs{$env{'request.course.id'}})>4048) {
5379: &flushcourselogs();
5380: }
5381: }
5382:
5383: sub courseacclog {
5384: my $fnsymb=shift;
5385: unless ($env{'request.course.id'}) { return ''; }
5386: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
5387: if ($fnsymb=~/$LONCAPA::assess_re/) {
5388: $what.=':POST';
5389: # FIXME: Probably ought to escape things....
5390: foreach my $key (keys(%env)) {
5391: if ($key=~/^form\.(.*)/) {
5392: my $formitem = $1;
5393: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
5394: $what.=':'.$formitem.'='.$env{$key};
5395: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
5396: if ($formitem eq 'proctorpassword') {
5397: $what.=':'.$formitem.'=' . '*' x length($env{$key});
5398: } else {
5399: $what.=':'.$formitem.'='.$env{$key};
5400: }
5401: }
5402: }
5403: }
5404: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
5405: # FIXME: We should not be depending on a form parameter that someone
5406: # editing lonsearchcat.pm might change in the future.
5407: if ($env{'form.phase'} eq 'course_search') {
5408: $what.= ':POST';
5409: # FIXME: Probably ought to escape things....
5410: foreach my $element ('courseexp','crsfulltext','crsrelated',
5411: 'crsdiscuss') {
5412: $what.=':'.$element.'='.$env{'form.'.$element};
5413: }
5414: }
5415: }
5416: &courselog($what);
5417: }
5418:
5419: sub countacc {
5420: my $url=&declutter(shift);
5421: return if (! defined($url) || $url eq '');
5422: unless ($env{'request.course.id'}) { return ''; }
5423: #
5424: # Mark that this url was used in this course
5425: #
5426: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
5427: #
5428: # Increase the access count for this resource in this child process
5429: #
5430: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
5431: $accesshash{$key}++;
5432: }
5433:
5434: sub linklog {
5435: my ($from,$to)=@_;
5436: $from=&declutter($from);
5437: $to=&declutter($to);
5438: $accesshash{$from.'___'.$to.'___comefrom'}=1;
5439: $accesshash{$to.'___'.$from.'___goto'}=1;
5440: }
5441:
5442: sub statslog {
5443: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
5444: if ($users<2) { return; }
5445: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
5446: 'course' => $env{'request.course.id'},
5447: 'sections' => '"all"',
5448: 'num_students' => $users,
5449: 'part' => $part,
5450: 'symb' => $symb,
5451: 'mean_tries' => $av_attempts,
5452: 'deg_of_diff' => $degdiff});
5453: foreach my $key (keys(%dynstore)) {
5454: $accesshash{$key}=$dynstore{$key};
5455: }
5456: }
5457:
5458: sub userrolelog {
5459: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
5460: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
5461: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
5462: $userrolehash
5463: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
5464: =$tend.':'.$tstart;
5465: }
5466: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
5467: $userrolehash
5468: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
5469: =$tend.':'.$tstart;
5470: }
5471: if ($trole =~ /^(dc|ad|li|au|dg|sc|dh|da)/ ) {
5472: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
5473: $domainrolehash
5474: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
5475: = $tend.':'.$tstart;
5476: }
5477: }
5478:
5479: sub courserolelog {
5480: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,
5481: $context,$othdomby,$requester)=@_;
5482: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
5483: my $cdom = $1;
5484: my $cnum = $2;
5485: my $sec = $3;
5486: my $namespace = 'rolelog';
5487: my %storehash = (
5488: role => $trole,
5489: start => $tstart,
5490: end => $tend,
5491: selfenroll => $selfenroll,
5492: context => $context,
5493: );
5494: if ($othdomby) {
5495: if ($othdomby eq 'othdombydc') {
5496: $storehash{'approval'} = 'domain';
5497: } elsif ($othdomby eq 'othdombyuser') {
5498: $storehash{'approval'} = 'user';
5499: }
5500: if ($requester ne '') {
5501: $storehash{'requester'} = $requester;
5502: }
5503: }
5504: if ($trole eq 'gr') {
5505: $namespace = 'groupslog';
5506: $storehash{'group'} = $sec;
5507: } else {
5508: $storehash{'section'} = $sec;
5509: my ($curruserdomstr,$newuserdomstr);
5510: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.userdomains'})) {
5511: $curruserdomstr = $env{'course.'.$env{'request.course.id'}.'.internal.userdomains'};
5512: } else {
5513: my %courseinfo = &coursedescription($cdom.'/'.$cnum);
5514: $curruserdomstr = $courseinfo{'internal.userdomains'};
5515: }
5516: if ($curruserdomstr ne '') {
5517: my @udoms = split(/,/,$curruserdomstr);
5518: unless (grep(/^\Q$domain\E/,@udoms)) {
5519: push(@udoms,$domain);
5520: $newuserdomstr = join(',',sort(@udoms));
5521: }
5522: } else {
5523: $newuserdomstr = $domain;
5524: }
5525: if ($newuserdomstr ne '') {
5526: my $putresult = &put('environment',{ 'internal.userdomains' => $newuserdomstr },
5527: $cdom,$cnum);
5528: if ($putresult eq 'ok') {
5529: unless (($selfenroll) || ($context eq 'selfenroll')) {
5530: if (($context eq 'createcourse') || ($context eq 'requestcourses') ||
5531: ($context eq 'automated') || ($context eq 'domain')) {
5532: $env{'course.'.$cdom.'_'.$cnum.'.internal.userdomains'} = $newuserdomstr;
5533: } elsif ($env{'request.course.id'} eq $cdom.'_'.$cnum) {
5534: &appenv({'course.'.$cdom.'_'.$cnum.'.internal.userdomains' => $newuserdomstr});
5535: }
5536: }
5537: }
5538: }
5539: }
5540: &write_log('course',$namespace,\%storehash,$delflag,$username,
5541: $domain,$cnum,$cdom);
5542: if (($trole ne 'st') || ($sec ne '')) {
5543: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
5544: }
5545: }
5546: return;
5547: }
5548:
5549: sub domainrolelog {
5550: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,
5551: $context,$othdomby,$requester)=@_;
5552: if ($area =~ m{^/($match_domain)/$}) {
5553: my $cdom = $1;
5554: my $domconfiguser = &get_domainconfiguser($cdom);
5555: my $namespace = 'rolelog';
5556: my %storehash = (
5557: role => $trole,
5558: start => $tstart,
5559: end => $tend,
5560: context => $context,
5561: );
5562: if ($othdomby) {
5563: if ($othdomby eq 'othdombydc') {
5564: $storehash{'approval'} = 'domain';
5565: } elsif ($othdomby eq 'othdombyuser') {
5566: $storehash{'approval'} = 'user';
5567: }
5568: if ($requester ne '') {
5569: $storehash{'requester'} = $requester;
5570: }
5571: }
5572: &write_log('domain',$namespace,\%storehash,$delflag,$username,
5573: $domain,$domconfiguser,$cdom);
5574: }
5575: return;
5576:
5577: }
5578:
5579: sub coauthorrolelog {
5580: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,
5581: $context,$othdomby,$requester)=@_;
5582: if ($area =~ m{^/($match_domain)/($match_username)$}) {
5583: my $audom = $1;
5584: my $auname = $2;
5585: my $namespace = 'rolelog';
5586: my %storehash = (
5587: role => $trole,
5588: start => $tstart,
5589: end => $tend,
5590: context => $context,
5591: );
5592: if ($othdomby) {
5593: if ($othdomby eq 'othdombydc') {
5594: $storehash{'approval'} = 'domain';
5595: } elsif ($othdomby eq 'othdombyuser') {
5596: $storehash{'approval'} = 'user';
5597: }
5598: if ($requester ne '') {
5599: $storehash{'requester'} = $requester;
5600: }
5601: }
5602: &write_log('author',$namespace,\%storehash,$delflag,$username,
5603: $domain,$auname,$audom);
5604: }
5605: return;
5606: }
5607:
5608: sub get_course_adv_roles {
5609: my ($cid,$codes) = @_;
5610: $cid=$env{'request.course.id'} unless (defined($cid));
5611: my %coursehash=&coursedescription($cid);
5612: my $crstype = &Apache::loncommon::course_type($cid);
5613: my %nothide=();
5614: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
5615: if ($user !~ /:/) {
5616: $nothide{join(':',split(/[\@]/,$user))}=1;
5617: } else {
5618: $nothide{$user}=1;
5619: }
5620: }
5621: my @possdoms = ($coursehash{'domain'});
5622: if ($coursehash{'checkforpriv'}) {
5623: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
5624: }
5625: my %returnhash=();
5626: my %dumphash=
5627: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
5628: my $now=time;
5629: my %privileged;
5630: foreach my $entry (keys(%dumphash)) {
5631: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
5632: if (($tstart) && ($tstart<0)) { next; }
5633: if (($tend) && ($tend<$now)) { next; }
5634: if (($tstart) && ($now<$tstart)) { next; }
5635: my ($role,$username,$domain,$section)=split(/\:/,$entry);
5636: if ($username eq '' || $domain eq '') { next; }
5637: if ((&privileged($username,$domain,\@possdoms)) &&
5638: (!$nothide{$username.':'.$domain})) { next; }
5639: if ($role eq 'cr') { next; }
5640: if ($codes) {
5641: if ($section) { $role .= ':'.$section; }
5642: if ($returnhash{$role}) {
5643: $returnhash{$role}.=','.$username.':'.$domain;
5644: } else {
5645: $returnhash{$role}=$username.':'.$domain;
5646: }
5647: } else {
5648: my $key=&plaintext($role,$crstype);
5649: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
5650: if ($returnhash{$key}) {
5651: $returnhash{$key}.=','.$username.':'.$domain;
5652: } else {
5653: $returnhash{$key}=$username.':'.$domain;
5654: }
5655: }
5656: }
5657: return %returnhash;
5658: }
5659:
5660: sub get_my_roles {
5661: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
5662: unless (defined($uname)) { $uname=$env{'user.name'}; }
5663: unless (defined($udom)) { $udom=$env{'user.domain'}; }
5664: my (%dumphash,%nothide);
5665: if ($context eq 'userroles') {
5666: %dumphash = &dump('roles',$udom,$uname);
5667: } else {
5668: %dumphash = &dump('nohist_userroles',$udom,$uname);
5669: if ($hidepriv) {
5670: my %coursehash=&coursedescription($udom.'_'.$uname);
5671: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
5672: if ($user !~ /:/) {
5673: $nothide{join(':',split(/[\@]/,$user))} = 1;
5674: } else {
5675: $nothide{$user} = 1;
5676: }
5677: }
5678: }
5679: }
5680: my %returnhash=();
5681: my $now=time;
5682: my %privileged;
5683: foreach my $entry (keys(%dumphash)) {
5684: my ($role,$tend,$tstart);
5685: if ($context eq 'userroles') {
5686: next if ($entry =~ /^rolesdef/);
5687: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
5688: } else {
5689: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
5690: }
5691: if (($tstart) && ($tstart<0)) { next; }
5692: my $status = 'active';
5693: if (($tend) && ($tend<=$now)) {
5694: $status = 'previous';
5695: }
5696: if (($tstart) && ($now<$tstart)) {
5697: $status = 'future';
5698: }
5699: if (ref($types) eq 'ARRAY') {
5700: if (!grep(/^\Q$status\E$/,@{$types})) {
5701: next;
5702: }
5703: } else {
5704: if ($status ne 'active') {
5705: next;
5706: }
5707: }
5708: my ($rolecode,$username,$domain,$section,$area);
5709: if ($context eq 'userroles') {
5710: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
5711: (undef,$domain,$username,$section) = split(/\//,$area);
5712: } else {
5713: ($role,$username,$domain,$section) = split(/\:/,$entry);
5714: }
5715: if (ref($roledoms) eq 'ARRAY') {
5716: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
5717: next;
5718: }
5719: }
5720: if (ref($roles) eq 'ARRAY') {
5721: if (!grep(/^\Q$role\E$/,@{$roles})) {
5722: if ($role =~ /^cr\//) {
5723: if (!grep(/^cr$/,@{$roles})) {
5724: next;
5725: }
5726: } elsif ($role =~ /^gr\//) {
5727: if (!grep(/^gr$/,@{$roles})) {
5728: next;
5729: }
5730: } else {
5731: next;
5732: }
5733: }
5734: }
5735: if ($hidepriv) {
5736: my @privroles = ('dc','su');
5737: if ($context eq 'userroles') {
5738: next if (grep(/^\Q$role\E$/,@privroles));
5739: } else {
5740: my $possdoms = [$domain];
5741: if (ref($roledoms) eq 'ARRAY') {
5742: push(@{$possdoms},@{$roledoms});
5743: }
5744: if (&privileged($username,$domain,$possdoms,\@privroles)) {
5745: if (!$nothide{$username.':'.$domain}) {
5746: next;
5747: }
5748: }
5749: }
5750: }
5751: if ($withsec) {
5752: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
5753: $tstart.':'.$tend;
5754: } else {
5755: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
5756: }
5757: }
5758: return %returnhash;
5759: }
5760:
5761: sub get_all_adhocroles {
5762: my ($dom) = @_;
5763: my @roles_by_num = ();
5764: my %domdefaults = &get_domain_defaults($dom);
5765: my (%description,%access_in_dom,%access_info);
5766: if (ref($domdefaults{'adhocroles'}) eq 'HASH') {
5767: my $count = 0;
5768: my %domcurrent = %{$domdefaults{'adhocroles'}};
5769: my %ordered;
5770: foreach my $role (sort(keys(%domcurrent))) {
5771: my ($order,$desc,$access_in_dom);
5772: if (ref($domcurrent{$role}) eq 'HASH') {
5773: $order = $domcurrent{$role}{'order'};
5774: $desc = $domcurrent{$role}{'desc'};
5775: $access_in_dom{$role} = $domcurrent{$role}{'access'};
5776: $access_info{$role} = $domcurrent{$role}{$access_in_dom{$role}};
5777: }
5778: if ($order eq '') {
5779: $order = $count;
5780: }
5781: $ordered{$order} = $role;
5782: if ($desc ne '') {
5783: $description{$role} = $desc;
5784: } else {
5785: $description{$role}= $role;
5786: }
5787: $count++;
5788: }
5789: foreach my $item (sort {$a <=> $b } (keys(%ordered))) {
5790: push(@roles_by_num,$ordered{$item});
5791: }
5792: }
5793: return (\@roles_by_num,\%description,\%access_in_dom,\%access_info);
5794: }
5795:
5796: sub get_my_adhocroles {
5797: my ($cid,$checkreg) = @_;
5798: my ($cdom,$cnum,%info,@possroles,$description,$roles_by_num);
5799: if ($env{'request.course.id'} eq $cid) {
5800: $cdom = $env{'course.'.$cid.'.domain'};
5801: $cnum = $env{'course.'.$cid.'.num'};
5802: $info{'internal.coursecode'} = $env{'course.'.$cid.'.internal.coursecode'};
5803: } elsif ($cid =~ /^($match_domain)_($match_courseid)$/) {
5804: $cdom = $1;
5805: $cnum = $2;
5806: %info = &get('environment',['internal.coursecode'],
5807: $cdom,$cnum);
5808: }
5809: if (($info{'internal.coursecode'} ne '') && ($checkreg)) {
5810: my $user = $env{'user.name'}.':'.$env{'user.domain'};
5811: my %rosterhash = &get('classlist',[$user],$cdom,$cnum);
5812: if ($rosterhash{$user} ne '') {
5813: my $type = (split(/:/,$rosterhash{$user}))[5];
5814: return ([],{}) if ($type eq 'auto');
5815: }
5816: }
5817: if (($cdom ne '') && ($cnum ne '')) {
5818: if (($env{"user.role.dh./$cdom/"}) || ($env{"user.role.da./$cdom/"})) {
5819: my $then=$env{'user.login.time'};
5820: my $update=$env{'user.update.time'};
5821: if (!$update) {
5822: $update = $then;
5823: }
5824: my @liveroles;
5825: foreach my $role ('dh','da') {
5826: if ($env{"user.role.$role./$cdom/"}) {
5827: my ($tstart,$tend)=split(/\./,$env{"user.role.$role./$cdom/"});
5828: my $limit = $update;
5829: if ($env{'request.role'} eq "$role./$cdom/") {
5830: $limit = $then;
5831: }
5832: my $activerole = 1;
5833: if ($tstart && $tstart>$limit) { $activerole = 0; }
5834: if ($tend && $tend <$limit) { $activerole = 0; }
5835: if ($activerole) {
5836: push(@liveroles,$role);
5837: }
5838: }
5839: }
5840: if (@liveroles) {
5841: if (&homeserver($cnum,$cdom) ne 'no_host') {
5842: my ($accessref,$accessinfo,%access_in_dom);
5843: ($roles_by_num,$description,$accessref,$accessinfo) = &get_all_adhocroles($cdom);
5844: if (ref($roles_by_num) eq 'ARRAY') {
5845: if (@{$roles_by_num}) {
5846: my %settings;
5847: if ($env{'request.course.id'} eq $cid) {
5848: foreach my $envkey (keys(%env)) {
5849: if ($envkey =~ /^\Qcourse.$cid.\E(internal\.adhoc.+)$/) {
5850: $settings{$1} = $env{$envkey};
5851: }
5852: }
5853: } else {
5854: %settings = &dump('environment',$cdom,$cnum,'internal\.adhoc');
5855: }
5856: my %setincrs;
5857: if ($settings{'internal.adhocaccess'}) {
5858: map { $setincrs{$_} = 1; } split(/,/,$settings{'internal.adhocaccess'});
5859: }
5860: my @statuses;
5861: if ($env{'environment.inststatus'}) {
5862: @statuses = split(/,/,$env{'environment.inststatus'});
5863: }
5864: my $user = $env{'user.name'}.':'.$env{'user.domain'};
5865: if (ref($accessref) eq 'HASH') {
5866: %access_in_dom = %{$accessref};
5867: }
5868: foreach my $role (@{$roles_by_num}) {
5869: my ($curraccess,@okstatus,@personnel);
5870: if ($setincrs{$role}) {
5871: ($curraccess,my $rest) = split(/=/,$settings{'internal.adhoc.'.$role});
5872: if ($curraccess eq 'status') {
5873: @okstatus = split(/\&/,$rest);
5874: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5875: @personnel = split(/\&/,$rest);
5876: }
5877: } else {
5878: $curraccess = $access_in_dom{$role};
5879: if (ref($accessinfo) eq 'HASH') {
5880: if ($curraccess eq 'status') {
5881: if (ref($accessinfo->{$role}) eq 'ARRAY') {
5882: @okstatus = @{$accessinfo->{$role}};
5883: }
5884: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5885: if (ref($accessinfo->{$role}) eq 'ARRAY') {
5886: @personnel = @{$accessinfo->{$role}};
5887: }
5888: }
5889: }
5890: }
5891: if ($curraccess eq 'none') {
5892: next;
5893: } elsif ($curraccess eq 'all') {
5894: push(@possroles,$role);
5895: } elsif ($curraccess eq 'dh') {
5896: if (grep(/^dh$/,@liveroles)) {
5897: push(@possroles,$role);
5898: } else {
5899: next;
5900: }
5901: } elsif ($curraccess eq 'da') {
5902: if (grep(/^da$/,@liveroles)) {
5903: push(@possroles,$role);
5904: } else {
5905: next;
5906: }
5907: } elsif ($curraccess eq 'status') {
5908: if (@okstatus) {
5909: if (!@statuses) {
5910: if (grep(/^default$/,@okstatus)) {
5911: push(@possroles,$role);
5912: }
5913: } else {
5914: foreach my $status (@okstatus) {
5915: if (grep(/^\Q$status\E$/,@statuses)) {
5916: push(@possroles,$role);
5917: last;
5918: }
5919: }
5920: }
5921: }
5922: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5923: if (grep(/^\Q$user\E$/,@personnel)) {
5924: if ($curraccess eq 'exc') {
5925: push(@possroles,$role);
5926: }
5927: } elsif ($curraccess eq 'inc') {
5928: push(@possroles,$role);
5929: }
5930: }
5931: }
5932: }
5933: }
5934: }
5935: }
5936: }
5937: }
5938: unless (ref($description) eq 'HASH') {
5939: if (ref($roles_by_num) eq 'ARRAY') {
5940: my %desc;
5941: map { $desc{$_} = $_; } (@{$roles_by_num});
5942: $description = \%desc;
5943: } else {
5944: $description = {};
5945: }
5946: }
5947: return (\@possroles,$description);
5948: }
5949:
5950: # ----------------------------------------------------- Frontpage Announcements
5951: #
5952: #
5953:
5954: sub postannounce {
5955: my ($server,$text)=@_;
5956: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
5957: unless ($text=~/\w/) { $text=''; }
5958: return &reply('setannounce:'.&escape($text),$server);
5959: }
5960:
5961: sub getannounce {
5962:
5963: if (open(my $fh,"<",$perlvar{'lonDocRoot'}.'/announcement.txt')) {
5964: my $announcement='';
5965: while (my $line = <$fh>) { $announcement .= $line; }
5966: close($fh);
5967: if ($announcement=~/\w/) {
5968: return
5969: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
5970: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
5971: } else {
5972: return '';
5973: }
5974: } else {
5975: return '';
5976: }
5977: }
5978:
5979: # ---------------------------------------------------------- Course ID routines
5980: # Deal with domain's nohist_courseid.db files
5981: #
5982:
5983: sub courseidput {
5984: my ($domain,$storehash,$coursehome,$caller) = @_;
5985: return unless (ref($storehash) eq 'HASH');
5986: my $outcome;
5987: if ($caller eq 'timeonly') {
5988: my $cids = '';
5989: foreach my $item (keys(%$storehash)) {
5990: $cids.=&escape($item).'&';
5991: }
5992: $cids=~s/\&$//;
5993: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
5994: $coursehome);
5995: } else {
5996: my $items = '';
5997: foreach my $item (keys(%$storehash)) {
5998: $items.= &escape($item).'='.
5999: &freeze_escape($$storehash{$item}).'&';
6000: }
6001: $items=~s/\&$//;
6002: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
6003: $coursehome);
6004: }
6005: if ($outcome eq 'unknown_cmd') {
6006: my $what;
6007: foreach my $cid (keys(%$storehash)) {
6008: $what .= &escape($cid).'=';
6009: foreach my $item ('description','inst_code','owner','type') {
6010: $what .= &escape($storehash->{$cid}{$item}).':';
6011: }
6012: $what =~ s/\:$/&/;
6013: }
6014: $what =~ s/\&$//;
6015: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
6016: } else {
6017: return $outcome;
6018: }
6019: }
6020:
6021: sub courseiddump {
6022: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
6023: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
6024: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
6025: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner,
6026: $hasuniquecode,$reqcrsdom,$reqinstcode)=@_;
6027: my $as_hash = 1;
6028: my %returnhash;
6029: if (!$domfilter) { $domfilter=''; }
6030: my %libserv = &all_library();
6031: foreach my $tryserver (keys(%libserv)) {
6032: if ( ( $hostidflag == 1
6033: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
6034: || (!defined($hostidflag)) ) {
6035:
6036: if (($domfilter eq '') ||
6037: (&host_domain($tryserver) eq $domfilter)) {
6038: my $rep;
6039: if (grep { $_ eq $tryserver } current_machine_ids()) {
6040: $rep = LONCAPA::Lond::dump_course_id_handler(
6041: join(":", (&host_domain($tryserver), $sincefilter,
6042: &escape($descfilter), &escape($instcodefilter),
6043: &escape($ownerfilter), &escape($coursefilter),
6044: &escape($typefilter), &escape($regexp_ok),
6045: $as_hash, &escape($selfenrollonly),
6046: &escape($catfilter), $showhidden, $caller,
6047: &escape($cloner), &escape($cc_clone), $cloneonly,
6048: &escape($createdbefore), &escape($createdafter),
6049: &escape($creationcontext),$domcloner,$hasuniquecode,
6050: $reqcrsdom,&escape($reqinstcode))));
6051: } else {
6052: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
6053: $sincefilter.':'.&escape($descfilter).':'.
6054: &escape($instcodefilter).':'.&escape($ownerfilter).
6055: ':'.&escape($coursefilter).':'.&escape($typefilter).
6056: ':'.&escape($regexp_ok).':'.$as_hash.':'.
6057: &escape($selfenrollonly).':'.&escape($catfilter).':'.
6058: $showhidden.':'.$caller.':'.&escape($cloner).':'.
6059: &escape($cc_clone).':'.$cloneonly.':'.
6060: &escape($createdbefore).':'.&escape($createdafter).':'.
6061: &escape($creationcontext).':'.$domcloner.':'.$hasuniquecode.
6062: ':'.$reqcrsdom.':'.&escape($reqinstcode),$tryserver);
6063: }
6064:
6065: my @pairs=split(/\&/,$rep);
6066: foreach my $item (@pairs) {
6067: my ($key,$value)=split(/\=/,$item,2);
6068: $key = &unescape($key);
6069: next if ($key =~ /^error: 2 /);
6070: my $result = &thaw_unescape($value);
6071: if (ref($result) eq 'HASH') {
6072: $returnhash{$key}=$result;
6073: } else {
6074: my @responses = split(/:/,$value);
6075: my @items = ('description','inst_code','owner','type');
6076: for (my $i=0; $i<@responses; $i++) {
6077: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
6078: }
6079: }
6080: }
6081: }
6082: }
6083: }
6084: return %returnhash;
6085: }
6086:
6087: sub courselastaccess {
6088: my ($cdom,$cnum,$hostidref) = @_;
6089: my %returnhash;
6090: if ($cdom && $cnum) {
6091: my $chome = &homeserver($cnum,$cdom);
6092: if ($chome ne 'no_host') {
6093: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
6094: &extract_lastaccess(\%returnhash,$rep);
6095: }
6096: } else {
6097: if (!$cdom) { $cdom=''; }
6098: my %libserv = &all_library();
6099: foreach my $tryserver (keys(%libserv)) {
6100: if (ref($hostidref) eq 'ARRAY') {
6101: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
6102: }
6103: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
6104: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
6105: &extract_lastaccess(\%returnhash,$rep);
6106: }
6107: }
6108: }
6109: return %returnhash;
6110: }
6111:
6112: sub extract_lastaccess {
6113: my ($returnhash,$rep) = @_;
6114: if (ref($returnhash) eq 'HASH') {
6115: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
6116: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
6117: $rep eq '') {
6118: my @pairs=split(/\&/,$rep);
6119: foreach my $item (@pairs) {
6120: my ($key,$value)=split(/\=/,$item,2);
6121: $key = &unescape($key);
6122: next if ($key =~ /^error: 2 /);
6123: $returnhash->{$key} = &thaw_unescape($value);
6124: }
6125: }
6126: }
6127: return;
6128: }
6129:
6130: # ---------------------------------------------------------- DC e-mail
6131:
6132: sub dcmailput {
6133: my ($domain,$msgid,$message,$server)=@_;
6134: my $status = &critical(
6135: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
6136: &escape($message),$server);
6137: return $status;
6138: }
6139:
6140: sub dcmaildump {
6141: my ($dom,$startdate,$enddate,$senders) = @_;
6142: my %returnhash=();
6143:
6144: if (defined(&domain($dom,'primary'))) {
6145: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
6146: &escape($enddate).':';
6147: my @esc_senders=map { &escape($_)} @$senders;
6148: $cmd.=&escape(join('&',@esc_senders));
6149: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
6150: my ($key,$value) = split(/\=/,$line,2);
6151: if (($key) && ($value)) {
6152: $returnhash{&unescape($key)} = &unescape($value);
6153: }
6154: }
6155: }
6156: return %returnhash;
6157: }
6158: # ---------------------------------------------------------- Domain roles
6159:
6160: sub get_domain_roles {
6161: my ($dom,$roles,$startdate,$enddate)=@_;
6162: if ((!defined($startdate)) || ($startdate eq '')) {
6163: $startdate = '.';
6164: }
6165: if ((!defined($enddate)) || ($enddate eq '')) {
6166: $enddate = '.';
6167: }
6168: my $rolelist;
6169: if (ref($roles) eq 'ARRAY') {
6170: $rolelist = join('&',@{$roles});
6171: }
6172: my %personnel = ();
6173:
6174: my %servers = &get_servers($dom,'library');
6175: foreach my $tryserver (keys(%servers)) {
6176: %{$personnel{$tryserver}}=();
6177: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
6178: &escape($startdate).':'.
6179: &escape($enddate).':'.
6180: &escape($rolelist), $tryserver))) {
6181: my ($key,$value) = split(/\=/,$line,2);
6182: if (($key) && ($value)) {
6183: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
6184: }
6185: }
6186: }
6187: return %personnel;
6188: }
6189:
6190: sub get_active_domroles {
6191: my ($dom,$roles) = @_;
6192: return () unless (ref($roles) eq 'ARRAY');
6193: my $now = time;
6194: my %dompersonnel = &get_domain_roles($dom,$roles,$now,$now);
6195: my %domroles;
6196: foreach my $server (keys(%dompersonnel)) {
6197: foreach my $user (sort(keys(%{$dompersonnel{$server}}))) {
6198: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,$user);
6199: $domroles{$uname.':'.$udom} = $dompersonnel{$server}{$user};
6200: }
6201: }
6202: return %domroles;
6203: }
6204:
6205: # ----------------------------------------------------------- Interval timing
6206:
6207: {
6208: # Caches needed for speedup of navmaps
6209: # We don't want to cache this for very long at all (5 seconds at most)
6210: #
6211: # The user for whom we cache
6212: my $cachedkey='';
6213: # The cached times for this user
6214: my %cachedtimes=();
6215: # When this was last done
6216: my $cachedtime='';
6217:
6218: sub load_all_first_access {
6219: my ($uname,$udom,$ignorecache)=@_;
6220: if (($cachedkey eq $uname.':'.$udom) &&
6221: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'}) &&
6222: (!$ignorecache)) {
6223: return;
6224: }
6225: $cachedtime=time;
6226: $cachedkey=$uname.':'.$udom;
6227: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
6228: }
6229:
6230: sub get_first_access {
6231: my ($type,$argsymb,$argmap,$ignorecache)=@_;
6232: my ($symb,$courseid,$udom,$uname)=&whichuser();
6233: if ($argsymb) { $symb=$argsymb; }
6234: my ($map,$id,$res)=&decode_symb($symb);
6235: if ($argmap) { $map = $argmap; }
6236: if ($type eq 'course') {
6237: $res='course';
6238: } elsif ($type eq 'map') {
6239: $res=&symbread($map);
6240: } else {
6241: $res=$symb;
6242: }
6243: &load_all_first_access($uname,$udom,$ignorecache);
6244: return $cachedtimes{"$courseid\0$res"};
6245: }
6246:
6247: sub set_first_access {
6248: my ($type,$interval)=@_;
6249: my ($symb,$courseid,$udom,$uname)=&whichuser();
6250: my ($map,$id,$res)=&decode_symb($symb);
6251: if ($type eq 'course') {
6252: $res='course';
6253: } elsif ($type eq 'map') {
6254: $res=&symbread($map);
6255: } else {
6256: $res=$symb;
6257: }
6258: $cachedkey='';
6259: my $firstaccess=&get_first_access($type,$symb,$map);
6260: if ($firstaccess) {
6261: &logthis("First access time already set ($firstaccess) when attempting ".
6262: "to set new value (type: $type, extent: $res) for $uname:$udom ".
6263: "in $courseid");
6264: return 'already_set';
6265: } else {
6266: my $start = time;
6267: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
6268: $udom,$uname);
6269: if ($putres eq 'ok') {
6270: &put('timerinterval',{"$courseid\0$res"=>$interval},
6271: $udom,$uname);
6272: &appenv(
6273: {
6274: 'course.'.$courseid.'.firstaccess.'.$res => $start,
6275: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
6276: }
6277: );
6278: if (($cachedtime) && (abs($start-$cachedtime) < 5)) {
6279: $cachedtimes{"$courseid\0$res"} = $start;
6280: }
6281: } elsif ($putres ne 'refused') {
6282: &logthis("Result: $putres when attempting to set first access time ".
6283: "(type: $type, extent: $res) for $uname:$udom in $courseid");
6284: }
6285: return $putres;
6286: }
6287: return 'already_set';
6288: }
6289: }
6290:
6291: # --------------------------------------------- Set Expire Date for Spreadsheet
6292:
6293: sub expirespread {
6294: my ($uname,$udom,$stype,$usymb)=@_;
6295: my $cid=$env{'request.course.id'};
6296: if ($cid) {
6297: my $now=time;
6298: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
6299: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
6300: $env{'course.'.$cid.'.num'}.
6301: ':nohist_expirationdates:'.
6302: &escape($key).'='.$now,
6303: $env{'course.'.$cid.'.home'})
6304: }
6305: return 'ok';
6306: }
6307:
6308: # ----------------------------------------------------- Devalidate Spreadsheets
6309:
6310: sub devalidate {
6311: my ($symb,$uname,$udom)=@_;
6312: my $cid=$env{'request.course.id'};
6313: if ($cid) {
6314: # delete the stored spreadsheets for
6315: # - the student level sheet of this user in course's homespace
6316: # - the assessment level sheet for this resource
6317: # for this user in user's homespace
6318: # - current conditional state info
6319: my $key=$uname.':'.$udom.':';
6320: my $status=
6321: &del('nohist_calculatedsheets',
6322: [$key.'studentcalc:'],
6323: $env{'course.'.$cid.'.domain'},
6324: $env{'course.'.$cid.'.num'})
6325: .' '.
6326: &del('nohist_calculatedsheets_'.$cid,
6327: [$key.'assesscalc:'.$symb],$udom,$uname);
6328: unless ($status eq 'ok ok') {
6329: &logthis('Could not devalidate spreadsheet '.
6330: $uname.' at '.$udom.' for '.
6331: $symb.': '.$status);
6332: }
6333: &delenv('user.state.'.$cid);
6334: }
6335: }
6336:
6337: sub get_scalar {
6338: my ($string,$end) = @_;
6339: my $value;
6340: if ($$string =~ s/^([^&]*?)($end)/$2/) {
6341: $value = $1;
6342: } elsif ($$string =~ s/^([^&]*?)&//) {
6343: $value = $1;
6344: }
6345: return &unescape($value);
6346: }
6347:
6348: sub array2str {
6349: my (@array) = @_;
6350: my $result=&arrayref2str(\@array);
6351: $result=~s/^__ARRAY_REF__//;
6352: $result=~s/__END_ARRAY_REF__$//;
6353: return $result;
6354: }
6355:
6356: sub arrayref2str {
6357: my ($arrayref) = @_;
6358: my $result='__ARRAY_REF__';
6359: foreach my $elem (@$arrayref) {
6360: if(ref($elem) eq 'ARRAY') {
6361: $result.=&arrayref2str($elem).'&';
6362: } elsif(ref($elem) eq 'HASH') {
6363: $result.=&hashref2str($elem).'&';
6364: } elsif(ref($elem)) {
6365: #print("Got a ref of ".(ref($elem))." skipping.");
6366: } else {
6367: $result.=&escape($elem).'&';
6368: }
6369: }
6370: $result=~s/\&$//;
6371: $result .= '__END_ARRAY_REF__';
6372: return $result;
6373: }
6374:
6375: sub hash2str {
6376: my (%hash) = @_;
6377: my $result=&hashref2str(\%hash);
6378: $result=~s/^__HASH_REF__//;
6379: $result=~s/__END_HASH_REF__$//;
6380: return $result;
6381: }
6382:
6383: sub hashref2str {
6384: my ($hashref)=@_;
6385: my $result='__HASH_REF__';
6386: foreach my $key (sort(keys(%$hashref))) {
6387: if (ref($key) eq 'ARRAY') {
6388: $result.=&arrayref2str($key).'=';
6389: } elsif (ref($key) eq 'HASH') {
6390: $result.=&hashref2str($key).'=';
6391: } elsif (ref($key)) {
6392: $result.='=';
6393: #print("Got a ref of ".(ref($key))." skipping.");
6394: } else {
6395: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
6396: }
6397:
6398: if(ref($hashref->{$key}) eq 'ARRAY') {
6399: $result.=&arrayref2str($hashref->{$key}).'&';
6400: } elsif(ref($hashref->{$key}) eq 'HASH') {
6401: $result.=&hashref2str($hashref->{$key}).'&';
6402: } elsif(ref($hashref->{$key})) {
6403: $result.='&';
6404: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
6405: } else {
6406: $result.=&escape($hashref->{$key}).'&';
6407: }
6408: }
6409: $result=~s/\&$//;
6410: $result .= '__END_HASH_REF__';
6411: return $result;
6412: }
6413:
6414: sub str2hash {
6415: my ($string)=@_;
6416: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
6417: return %$hash;
6418: }
6419:
6420: sub str2hashref {
6421: my ($string) = @_;
6422:
6423: my %hash;
6424:
6425: if($string !~ /^__HASH_REF__/) {
6426: if (! ($string eq '' || !defined($string))) {
6427: $hash{'error'}='Not hash reference';
6428: }
6429: return (\%hash, $string);
6430: }
6431:
6432: $string =~ s/^__HASH_REF__//;
6433:
6434: while($string !~ /^__END_HASH_REF__/) {
6435: #key
6436: my $key='';
6437: if($string =~ /^__HASH_REF__/) {
6438: ($key, $string)=&str2hashref($string);
6439: if(defined($key->{'error'})) {
6440: $hash{'error'}='Bad data';
6441: return (\%hash, $string);
6442: }
6443: } elsif($string =~ /^__ARRAY_REF__/) {
6444: ($key, $string)=&str2arrayref($string);
6445: if($key->[0] eq 'Array reference error') {
6446: $hash{'error'}='Bad data';
6447: return (\%hash, $string);
6448: }
6449: } else {
6450: $string =~ s/^(.*?)=//;
6451: $key=&unescape($1);
6452: }
6453: $string =~ s/^=//;
6454:
6455: #value
6456: my $value='';
6457: if($string =~ /^__HASH_REF__/) {
6458: ($value, $string)=&str2hashref($string);
6459: if(defined($value->{'error'})) {
6460: $hash{'error'}='Bad data';
6461: return (\%hash, $string);
6462: }
6463: } elsif($string =~ /^__ARRAY_REF__/) {
6464: ($value, $string)=&str2arrayref($string);
6465: if($value->[0] eq 'Array reference error') {
6466: $hash{'error'}='Bad data';
6467: return (\%hash, $string);
6468: }
6469: } else {
6470: $value=&get_scalar(\$string,'__END_HASH_REF__');
6471: }
6472: $string =~ s/^&//;
6473:
6474: $hash{$key}=$value;
6475: }
6476:
6477: $string =~ s/^__END_HASH_REF__//;
6478:
6479: return (\%hash, $string);
6480: }
6481:
6482: sub str2array {
6483: my ($string)=@_;
6484: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
6485: return @$array;
6486: }
6487:
6488: sub str2arrayref {
6489: my ($string) = @_;
6490: my @array;
6491:
6492: if($string !~ /^__ARRAY_REF__/) {
6493: if (! ($string eq '' || !defined($string))) {
6494: $array[0]='Array reference error';
6495: }
6496: return (\@array, $string);
6497: }
6498:
6499: $string =~ s/^__ARRAY_REF__//;
6500:
6501: while($string !~ /^__END_ARRAY_REF__/) {
6502: my $value='';
6503: if($string =~ /^__HASH_REF__/) {
6504: ($value, $string)=&str2hashref($string);
6505: if(defined($value->{'error'})) {
6506: $array[0] ='Array reference error';
6507: return (\@array, $string);
6508: }
6509: } elsif($string =~ /^__ARRAY_REF__/) {
6510: ($value, $string)=&str2arrayref($string);
6511: if($value->[0] eq 'Array reference error') {
6512: $array[0] ='Array reference error';
6513: return (\@array, $string);
6514: }
6515: } else {
6516: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
6517: }
6518: $string =~ s/^&//;
6519:
6520: push(@array, $value);
6521: }
6522:
6523: $string =~ s/^__END_ARRAY_REF__//;
6524:
6525: return (\@array, $string);
6526: }
6527:
6528: # -------------------------------------------------------------------Temp Store
6529:
6530: sub tmpreset {
6531: my ($symb,$namespace,$domain,$stuname) = @_;
6532: if (!$symb) {
6533: $symb=&symbread();
6534: if (!$symb) { $symb= $env{'request.url'}; }
6535: }
6536: $symb=escape($symb);
6537:
6538: if (!$namespace) { $namespace=$env{'request.state'}; }
6539: $namespace=~s/\//\_/g;
6540: $namespace=~s/\W//g;
6541:
6542: if (!$domain) { $domain=$env{'user.domain'}; }
6543: if (!$stuname) { $stuname=$env{'user.name'}; }
6544: if ($domain eq 'public' && $stuname eq 'public') {
6545: $stuname=&get_requestor_ip();
6546: }
6547: my $path=LONCAPA::tempdir();
6548: my %hash;
6549: if (tie(%hash,'GDBM_File',
6550: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
6551: &GDBM_WRCREAT(),0640)) {
6552: foreach my $key (keys(%hash)) {
6553: if ($key=~ /:$symb/) {
6554: delete($hash{$key});
6555: }
6556: }
6557: }
6558: }
6559:
6560: sub tmpstore {
6561: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
6562:
6563: if (!$symb) {
6564: $symb=&symbread();
6565: if (!$symb) { $symb= $env{'request.url'}; }
6566: }
6567: $symb=escape($symb);
6568:
6569: if (!$namespace) {
6570: # I don't think we would ever want to store this for a course.
6571: # it seems this will only be used if we don't have a course.
6572: #$namespace=$env{'request.course.id'};
6573: #if (!$namespace) {
6574: $namespace=$env{'request.state'};
6575: #}
6576: }
6577: $namespace=~s/\//\_/g;
6578: $namespace=~s/\W//g;
6579: if (!$domain) { $domain=$env{'user.domain'}; }
6580: if (!$stuname) { $stuname=$env{'user.name'}; }
6581: if ($domain eq 'public' && $stuname eq 'public') {
6582: $stuname=&get_requestor_ip();
6583: }
6584: my $now=time;
6585: my %hash;
6586: my $path=LONCAPA::tempdir();
6587: if (tie(%hash,'GDBM_File',
6588: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
6589: &GDBM_WRCREAT(),0640)) {
6590: $hash{"version:$symb"}++;
6591: my $version=$hash{"version:$symb"};
6592: my $allkeys='';
6593: foreach my $key (keys(%$storehash)) {
6594: $allkeys.=$key.':';
6595: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
6596: }
6597: $hash{"$version:$symb:timestamp"}=$now;
6598: $allkeys.='timestamp';
6599: $hash{"$version:keys:$symb"}=$allkeys;
6600: if (untie(%hash)) {
6601: return 'ok';
6602: } else {
6603: return "error:$!";
6604: }
6605: } else {
6606: return "error:$!";
6607: }
6608: }
6609:
6610: # -----------------------------------------------------------------Temp Restore
6611:
6612: sub tmprestore {
6613: my ($symb,$namespace,$domain,$stuname) = @_;
6614:
6615: if (!$symb) {
6616: $symb=&symbread();
6617: if (!$symb) { $symb= $env{'request.url'}; }
6618: }
6619: $symb=escape($symb);
6620:
6621: if (!$namespace) { $namespace=$env{'request.state'}; }
6622:
6623: if (!$domain) { $domain=$env{'user.domain'}; }
6624: if (!$stuname) { $stuname=$env{'user.name'}; }
6625: if ($domain eq 'public' && $stuname eq 'public') {
6626: $stuname=&get_requestor_ip();
6627: }
6628: my %returnhash;
6629: $namespace=~s/\//\_/g;
6630: $namespace=~s/\W//g;
6631: my %hash;
6632: my $path=LONCAPA::tempdir();
6633: if (tie(%hash,'GDBM_File',
6634: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
6635: &GDBM_READER(),0640)) {
6636: my $version=$hash{"version:$symb"};
6637: $returnhash{'version'}=$version;
6638: my $scope;
6639: for ($scope=1;$scope<=$version;$scope++) {
6640: my $vkeys=$hash{"$scope:keys:$symb"};
6641: my @keys=split(/:/,$vkeys);
6642: my $key;
6643: $returnhash{"$scope:keys"}=$vkeys;
6644: foreach $key (@keys) {
6645: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
6646: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
6647: }
6648: }
6649: if (!(untie(%hash))) {
6650: return "error:$!";
6651: }
6652: } else {
6653: return "error:$!";
6654: }
6655: return %returnhash;
6656: }
6657:
6658: # ----------------------------------------------------------------------- Store
6659:
6660: sub store {
6661: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
6662: my $home='';
6663:
6664: if ($stuname) { $home=&homeserver($stuname,$domain); }
6665:
6666: $symb=&symbclean($symb);
6667: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
6668:
6669: if (!$domain) { $domain=$env{'user.domain'}; }
6670: if (!$stuname) { $stuname=$env{'user.name'}; }
6671:
6672: &devalidate($symb,$stuname,$domain);
6673:
6674: $symb=escape($symb);
6675: if (!$namespace) {
6676: unless ($namespace=$env{'request.course.id'}) {
6677: return '';
6678: }
6679: }
6680: if (!$home) { $home=$env{'user.home'}; }
6681:
6682: $$storehash{'ip'}=&get_requestor_ip();
6683: $$storehash{'host'}=$perlvar{'lonHostID'};
6684:
6685: my $namevalue='';
6686: foreach my $key (keys(%$storehash)) {
6687: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6688: }
6689: $namevalue=~s/\&$//;
6690: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
6691: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
6692: }
6693:
6694: # -------------------------------------------------------------- Critical Store
6695:
6696: sub cstore {
6697: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
6698: my $home='';
6699:
6700: if ($stuname) { $home=&homeserver($stuname,$domain); }
6701:
6702: $symb=&symbclean($symb);
6703: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
6704:
6705: if (!$domain) { $domain=$env{'user.domain'}; }
6706: if (!$stuname) { $stuname=$env{'user.name'}; }
6707:
6708: &devalidate($symb,$stuname,$domain);
6709:
6710: $symb=escape($symb);
6711: if (!$namespace) {
6712: unless ($namespace=$env{'request.course.id'}) {
6713: return '';
6714: }
6715: }
6716: if (!$home) { $home=$env{'user.home'}; }
6717:
6718: $$storehash{'ip'}=&get_requestor_ip();
6719: $$storehash{'host'}=$perlvar{'lonHostID'};
6720:
6721: my $namevalue='';
6722: foreach my $key (keys(%$storehash)) {
6723: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6724: }
6725: $namevalue=~s/\&$//;
6726: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
6727: return critical
6728: ("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
6729: }
6730:
6731: # --------------------------------------------------------------------- Restore
6732:
6733: sub restore {
6734: my ($symb,$namespace,$domain,$stuname) = @_;
6735: my $home='';
6736:
6737: if ($stuname) { $home=&homeserver($stuname,$domain); }
6738:
6739: if (!$symb) {
6740: return if ($namespace eq 'courserequests');
6741: unless ($symb=escape(&symbread())) { return ''; }
6742: } else {
6743: unless ($namespace eq 'courserequests') {
6744: $symb=&escape(&symbclean($symb));
6745: }
6746: }
6747: if (!$namespace) {
6748: unless ($namespace=$env{'request.course.id'}) {
6749: return '';
6750: }
6751: }
6752: if (!$domain) { $domain=$env{'user.domain'}; }
6753: if (!$stuname) { $stuname=$env{'user.name'}; }
6754: if (!$home) { $home=$env{'user.home'}; }
6755: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
6756:
6757: my %returnhash=();
6758: foreach my $line (split(/\&/,$answer)) {
6759: my ($name,$value)=split(/\=/,$line);
6760: $returnhash{&unescape($name)}=&thaw_unescape($value);
6761: }
6762: my $version;
6763: for ($version=1;$version<=$returnhash{'version'};$version++) {
6764: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
6765: $returnhash{$item}=$returnhash{$version.':'.$item};
6766: }
6767: }
6768: return %returnhash;
6769: }
6770:
6771: # ---------------------------------------------------------- Course Description
6772: #
6773: #
6774:
6775: sub coursedescription {
6776: my ($courseid,$args)=@_;
6777: $courseid=~s/^\///;
6778: $courseid=~s/\_/\//g;
6779: my ($cdomain,$cnum)=split(/\//,$courseid);
6780: my $chome=&homeserver($cnum,$cdomain);
6781: my $normalid=$cdomain.'_'.$cnum;
6782: # need to always cache even if we get errors otherwise we keep
6783: # trying and trying and trying to get the course description.
6784: my %envhash=();
6785: my %returnhash=();
6786:
6787: my $expiretime=600;
6788: if ($env{'request.course.id'} eq $normalid) {
6789: $expiretime=120;
6790: }
6791:
6792: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
6793: if (!$args->{'freshen_cache'}
6794: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
6795: foreach my $key (keys(%env)) {
6796: next if ($key !~ /^\Q$prefix\E(.*)/);
6797: my ($setting) = $1;
6798: $returnhash{$setting} = $env{$key};
6799: }
6800: return %returnhash;
6801: }
6802:
6803: # get the data again
6804:
6805: if (!$args->{'one_time'}) {
6806: $envhash{'course.'.$normalid.'.last_cache'}=time;
6807: }
6808:
6809: if ($chome ne 'no_host') {
6810: %returnhash=&dump('environment',$cdomain,$cnum);
6811: if (!exists($returnhash{'con_lost'})) {
6812: my $username = $env{'user.name'}; # Defult username
6813: if(defined $args->{'user'}) {
6814: $username = $args->{'user'};
6815: }
6816: $returnhash{'home'}= $chome;
6817: $returnhash{'domain'} = $cdomain;
6818: $returnhash{'num'} = $cnum;
6819: if (!defined($returnhash{'type'})) {
6820: $returnhash{'type'} = 'Course';
6821: }
6822: while (my ($name,$value) = each %returnhash) {
6823: $envhash{'course.'.$normalid.'.'.$name}=$value;
6824: }
6825: $returnhash{'url'}=&clutter($returnhash{'url'});
6826: $returnhash{'fn'}=LONCAPA::tempdir() .
6827: $username.'_'.$cdomain.'_'.$cnum;
6828: $envhash{'course.'.$normalid.'.home'}=$chome;
6829: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
6830: $envhash{'course.'.$normalid.'.num'}=$cnum;
6831: }
6832: }
6833: if (!$args->{'one_time'}) {
6834: &appenv(\%envhash);
6835: }
6836: return %returnhash;
6837: }
6838:
6839: sub update_released_required {
6840: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
6841: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
6842: $cid = $env{'request.course.id'};
6843: $cdom = $env{'course.'.$cid.'.domain'};
6844: $cnum = $env{'course.'.$cid.'.num'};
6845: $chome = $env{'course.'.$cid.'.home'};
6846: }
6847: if ($needsrelease) {
6848: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
6849: my $needsupdate;
6850: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
6851: $needsupdate = 1;
6852: } else {
6853: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
6854: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
6855: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
6856: $needsupdate = 1;
6857: }
6858: }
6859: if ($needsupdate) {
6860: my %needshash = (
6861: 'internal.releaserequired' => $needsrelease,
6862: );
6863: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
6864: if ($putresult eq 'ok') {
6865: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
6866: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
6867: if (ref($crsinfo{$cid}) eq 'HASH') {
6868: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
6869: &courseidput($cdom,\%crsinfo,$chome,'notime');
6870: }
6871: }
6872: }
6873: }
6874: return;
6875: }
6876:
6877: # -------------------------------------------------See if a user is privileged
6878:
6879: sub privileged {
6880: my ($username,$domain,$possdomains,$possroles)=@_;
6881: my $now = time;
6882: my $roles;
6883: if (ref($possroles) eq 'ARRAY') {
6884: $roles = $possroles;
6885: } else {
6886: $roles = ['dc','su'];
6887: }
6888: if (ref($possdomains) eq 'ARRAY') {
6889: my %privileged = &privileged_by_domain($possdomains,$roles);
6890: foreach my $dom (@{$possdomains}) {
6891: if (($username =~ /^$match_username$/) && ($domain =~ /^$match_domain$/) &&
6892: (ref($privileged{$dom}) eq 'HASH')) {
6893: foreach my $role (@{$roles}) {
6894: if (ref($privileged{$dom}{$role}) eq 'HASH') {
6895: if (exists($privileged{$dom}{$role}{$username.':'.$domain})) {
6896: my ($end,$start) = split(/:/,$privileged{$dom}{$role}{$username.':'.$domain});
6897: return 1 unless (($end && $end < $now) ||
6898: ($start && $start > $now));
6899: }
6900: }
6901: }
6902: }
6903: }
6904: } else {
6905: my %rolesdump = &dump("roles", $domain, $username) or return 0;
6906: my $now = time;
6907:
6908: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys(%rolesdump)}) {
6909: my ($trole, $tend, $tstart) = split(/_/, $role);
6910: if (grep(/^\Q$trole\E$/,@{$roles})) {
6911: return 1 unless ($tend && $tend < $now)
6912: or ($tstart && $tstart > $now);
6913: }
6914: }
6915: }
6916: return 0;
6917: }
6918:
6919: sub privileged_by_domain {
6920: my ($domains,$roles) = @_;
6921: my %privileged = ();
6922: my $cachetime = 60*60*24;
6923: my $now = time;
6924: unless ((ref($domains) eq 'ARRAY') && (ref($roles) eq 'ARRAY')) {
6925: return %privileged;
6926: }
6927: foreach my $dom (@{$domains}) {
6928: next if (ref($privileged{$dom}) eq 'HASH');
6929: my $needroles;
6930: foreach my $role (@{$roles}) {
6931: my ($result,$cached)=&is_cached_new('priv_'.$role,$dom);
6932: if (defined($cached)) {
6933: if (ref($result) eq 'HASH') {
6934: $privileged{$dom}{$role} = $result;
6935: }
6936: } else {
6937: $needroles = 1;
6938: }
6939: }
6940: if ($needroles) {
6941: my %dompersonnel = &get_domain_roles($dom,$roles);
6942: $privileged{$dom} = {};
6943: foreach my $server (keys(%dompersonnel)) {
6944: if (ref($dompersonnel{$server}) eq 'HASH') {
6945: foreach my $item (keys(%{$dompersonnel{$server}})) {
6946: my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
6947: my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
6948: next if ($end && $end < $now);
6949: $privileged{$dom}{$trole}{$uname.':'.$udom} =
6950: $dompersonnel{$server}{$item};
6951: }
6952: }
6953: }
6954: if (ref($privileged{$dom}) eq 'HASH') {
6955: foreach my $role (@{$roles}) {
6956: if (ref($privileged{$dom}{$role}) eq 'HASH') {
6957: &do_cache_new('priv_'.$role,$dom,$privileged{$dom}{$role},$cachetime);
6958: } else {
6959: my %hash = ();
6960: &do_cache_new('priv_'.$role,$dom,\%hash,$cachetime);
6961: }
6962: }
6963: }
6964: }
6965: }
6966: return %privileged;
6967: }
6968:
6969: # -------------------------------------------------------- Get user privileges
6970:
6971: sub rolesinit {
6972: my ($domain, $username) = @_;
6973: my %userroles = ('user.login.time' => time);
6974: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
6975:
6976: # firstaccess and timerinterval are related to timed maps/resources.
6977: # also, blocking can be triggered by an activating timer
6978: # it's saved in the user's %env.
6979: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
6980: my %timerinterval = &dump('timerinterval', $domain, $username);
6981: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
6982: %timerintchk, %timerintenv, %coauthorenv);
6983:
6984: foreach my $key (keys(%firstaccess)) {
6985: my ($cid, $rest) = split(/\0/, $key);
6986: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
6987: }
6988:
6989: foreach my $key (keys(%timerinterval)) {
6990: my ($cid,$rest) = split(/\0/,$key);
6991: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
6992: }
6993:
6994: my %allroles=();
6995: my %allgroups=();
6996: my %gotcoauconfig=();
6997:
6998: for my $area (grep { ! /^rolesdef_/ } keys(%rolesdump)) {
6999: my $role = $rolesdump{$area};
7000: $area =~ s/\_\w\w$//;
7001:
7002: my ($trole, $tend, $tstart, $group_privs);
7003:
7004: if ($role =~ /^cr/) {
7005: # Custom role, defined by a user
7006: # e.g., user.role.cr/msu/smith/mynewrole
7007: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
7008: $trole = $1;
7009: ($tend, $tstart) = split('_', $2);
7010: } else {
7011: $trole = $role;
7012: }
7013: } elsif ($role =~ m|^gr/|) {
7014: # Role of member in a group, defined within a course/community
7015: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
7016: ($trole, $tend, $tstart) = split(/_/, $role);
7017: next if $tstart eq '-1';
7018: ($trole, $group_privs) = split(/\//, $trole);
7019: $group_privs = &unescape($group_privs);
7020: } else {
7021: # Just a normal role, defined in roles.tab
7022: ($trole, $tend, $tstart) = split(/_/,$role);
7023: }
7024:
7025: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
7026: $username);
7027: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
7028:
7029: # role expired or not available yet?
7030: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
7031: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
7032:
7033: next if $area eq '' or $trole eq '';
7034:
7035: my $spec = "$trole.$area";
7036: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
7037:
7038: if ($trole =~ /^cr\//) {
7039: # Custom role, defined by a user
7040: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
7041: } elsif ($trole eq 'gr') {
7042: # Role of a member in a group, defined within a course/community
7043: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
7044: next;
7045: } else {
7046: # Normal role, defined in roles.tab
7047: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
7048: if (($trole eq 'ca') || ($trole eq 'aa')) {
7049: (undef,my ($audom,$auname)) = split(/\//,$area);
7050: unless ($gotcoauconfig{$area}) {
7051: my @ca_settings = ('authoreditors','coauthorlist','coauthoroptin');
7052: my %info = &userenvironment($audom,$auname,@ca_settings);
7053: $gotcoauconfig{$area} = 1;
7054: foreach my $item (@ca_settings) {
7055: if (exists($info{$item})) {
7056: my $name = $item;
7057: if ($item eq 'authoreditors') {
7058: $name = 'editors';
7059: }
7060: $coauthorenv{"environment.internal.$name.$area"} = $info{$item};
7061: }
7062: }
7063: }
7064: }
7065: }
7066:
7067: my $cid = $tdomain.'_'.$trest;
7068: unless ($firstaccchk{$cid}) {
7069: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
7070: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
7071: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
7072: $coursetimerstarts{$cid}{$item};
7073: }
7074: }
7075: $firstaccchk{$cid} = 1;
7076: }
7077: unless ($timerintchk{$cid}) {
7078: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
7079: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
7080: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
7081: $coursetimerintervals{$cid}{$item};
7082: }
7083: }
7084: $timerintchk{$cid} = 1;
7085: }
7086: }
7087:
7088: @userroles{'user.author','user.adv','user.rar'} = &set_userprivs(\%userroles,
7089: \%allroles, \%allgroups);
7090: $env{'user.adv'} = $userroles{'user.adv'};
7091: $env{'user.rar'} = $userroles{'user.rar'};
7092:
7093: return (\%userroles,\%firstaccenv,\%timerintenv,\%coauthorenv);
7094: }
7095:
7096: sub set_arearole {
7097: my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
7098: unless ($nolog) {
7099: # log the associated role with the area
7100: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
7101: }
7102: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
7103: }
7104:
7105: sub custom_roleprivs {
7106: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
7107: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
7108: my $homsvr = &homeserver($rauthor,$rdomain);
7109: if (&hostname($homsvr) ne '') {
7110: my ($rdummy,$roledef)=
7111: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
7112: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
7113: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
7114: if (defined($syspriv)) {
7115: if ($trest =~ /^$match_community$/) {
7116: $syspriv =~ s/bre\&S//;
7117: }
7118: $$allroles{'cm./'}.=':'.$syspriv;
7119: $$allroles{$spec.'./'}.=':'.$syspriv;
7120: }
7121: if ($tdomain ne '') {
7122: if (defined($dompriv)) {
7123: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
7124: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
7125: }
7126: if (($trest ne '') && (defined($coursepriv))) {
7127: if ($trole =~ m{^cr/$tdomain/$tdomain\Q-domainconfig\E/([^/]+)$}) {
7128: my $rolename = $1;
7129: $coursepriv = &course_adhocrole_privs($rolename,$tdomain,$trest,$coursepriv);
7130: }
7131: $$allroles{'cm.'.$area}.=':'.$coursepriv;
7132: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
7133: }
7134: }
7135: }
7136: }
7137: }
7138:
7139: sub course_adhocrole_privs {
7140: my ($rolename,$cdom,$cnum,$coursepriv) = @_;
7141: my %overrides = &get('environment',["internal.adhocpriv.$rolename"],$cdom,$cnum);
7142: if ($overrides{"internal.adhocpriv.$rolename"}) {
7143: my (%currprivs,%storeprivs);
7144: foreach my $item (split(/:/,$coursepriv)) {
7145: my ($priv,$restrict) = split(/\&/,$item);
7146: $currprivs{$priv} = $restrict;
7147: }
7148: my (%possadd,%possremove,%full);
7149: foreach my $item (split(/\:/,$Apache::lonnet::pr{'cr:c'})) {
7150: my ($priv,$restrict)=split(/\&/,$item);
7151: $full{$priv} = $restrict;
7152: }
7153: foreach my $item (split(/,/,$overrides{"internal.adhocpriv.$rolename"})) {
7154: next if ($item eq '');
7155: my ($rule,$rest) = split(/=/,$item);
7156: next unless (($rule eq 'off') || ($rule eq 'on'));
7157: foreach my $priv (split(/:/,$rest)) {
7158: if ($priv ne '') {
7159: if ($rule eq 'off') {
7160: $possremove{$priv} = 1;
7161: } else {
7162: $possadd{$priv} = 1;
7163: }
7164: }
7165: }
7166: }
7167: foreach my $priv (sort(keys(%full))) {
7168: if (exists($currprivs{$priv})) {
7169: unless (exists($possremove{$priv})) {
7170: $storeprivs{$priv} = $currprivs{$priv};
7171: }
7172: } elsif (exists($possadd{$priv})) {
7173: $storeprivs{$priv} = $full{$priv};
7174: }
7175: }
7176: $coursepriv = ':'.join(':',map { $_.'&'.$storeprivs{$_}; } sort(keys(%storeprivs)));
7177: }
7178: return $coursepriv;
7179: }
7180:
7181: sub group_roleprivs {
7182: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
7183: my $access = 1;
7184: my $now = time;
7185: if (($tend!=0) && ($tend<$now)) { $access = 0; }
7186: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
7187: if ($access) {
7188: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
7189: $$allgroups{$course}{$group} .=':'.$group_privs;
7190: }
7191: }
7192:
7193: sub standard_roleprivs {
7194: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
7195: if (defined($pr{$trole.':s'})) {
7196: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
7197: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
7198: }
7199: if ($tdomain ne '') {
7200: if (defined($pr{$trole.':d'})) {
7201: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
7202: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
7203: }
7204: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
7205: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
7206: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
7207: }
7208: }
7209: }
7210:
7211: sub set_userprivs {
7212: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
7213: my $author=0;
7214: my $adv=0;
7215: my $rar=0;
7216: my %grouproles = ();
7217: if (keys(%{$allgroups}) > 0) {
7218: my @groupkeys;
7219: foreach my $role (keys(%{$allroles})) {
7220: push(@groupkeys,$role);
7221: }
7222: if (ref($groups_roles) eq 'HASH') {
7223: foreach my $key (keys(%{$groups_roles})) {
7224: unless (grep(/^\Q$key\E$/,@groupkeys)) {
7225: push(@groupkeys,$key);
7226: }
7227: }
7228: }
7229: if (@groupkeys > 0) {
7230: foreach my $role (@groupkeys) {
7231: my ($trole,$area,$sec,$extendedarea);
7232: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
7233: $trole = $1;
7234: $area = $2;
7235: $sec = $3;
7236: $extendedarea = $area.$sec;
7237: if (exists($$allgroups{$area})) {
7238: foreach my $group (keys(%{$$allgroups{$area}})) {
7239: my $spec = $trole.'.'.$extendedarea;
7240: $grouproles{$spec.'.'.$area.'/'.$group} =
7241: $$allgroups{$area}{$group};
7242: }
7243: }
7244: }
7245: }
7246: }
7247: }
7248: foreach my $group (keys(%grouproles)) {
7249: $$allroles{$group} = $grouproles{$group};
7250: }
7251: foreach my $role (keys(%{$allroles})) {
7252: my %thesepriv;
7253: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
7254: foreach my $item (split(/:/,$$allroles{$role})) {
7255: if ($item ne '') {
7256: my ($privilege,$restrictions)=split(/&/,$item);
7257: if ($restrictions eq '') {
7258: $thesepriv{$privilege}='F';
7259: } elsif ($thesepriv{$privilege} ne 'F') {
7260: $thesepriv{$privilege}.=$restrictions;
7261: }
7262: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
7263: if ($thesepriv{'rar'} eq 'F') { $rar=1; }
7264: }
7265: }
7266: my $thesestr='';
7267: foreach my $priv (sort(keys(%thesepriv))) {
7268: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
7269: }
7270: $userroles->{'user.priv.'.$role} = $thesestr;
7271: }
7272: return ($author,$adv,$rar);
7273: }
7274:
7275: sub role_status {
7276: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
7277: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
7278: my ($one,$two) = split(m{\./},$rolekey,2);
7279: (undef,undef,$$role) = split(/\./,$one,3);
7280: unless (!defined($$role) || $$role eq '') {
7281: $$where = '/'.$two;
7282: $$trolecode=$$role.'.'.$$where;
7283: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
7284: $$tstatus='is';
7285: if ($$tstart && $$tstart>$update) {
7286: $$tstatus='future';
7287: if ($$tstart<$now) {
7288: if ($$tstart && $$tstart>$refresh) {
7289: if (($$where ne '') && ($$role ne '')) {
7290: my (%allroles,%allgroups,$group_privs,
7291: %groups_roles,@rolecodes);
7292: my %userroles = (
7293: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
7294: );
7295: @rolecodes = ('cm');
7296: my $spec=$$role.'.'.$$where;
7297: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
7298: if ($$role =~ /^cr\//) {
7299: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
7300: push(@rolecodes,'cr');
7301: } elsif ($$role eq 'gr') {
7302: push(@rolecodes,$$role);
7303: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
7304: $env{'user.name'});
7305: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
7306: (undef,my $group_privs) = split(/\//,$trole);
7307: $group_privs = &unescape($group_privs);
7308: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
7309: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
7310: &get_groups_roles($tdomain,$trest,
7311: \%course_roles,\@rolecodes,
7312: \%groups_roles);
7313: } else {
7314: push(@rolecodes,$$role);
7315: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
7316: }
7317: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%allroles,\%allgroups,
7318: \%groups_roles);
7319: &appenv(\%userroles,\@rolecodes);
7320: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
7321: }
7322: }
7323: $$tstatus = 'is';
7324: }
7325: }
7326: if ($$tend) {
7327: if ($$tend<$update) {
7328: $$tstatus='expired';
7329: } elsif ($$tend<$now) {
7330: $$tstatus='will_not';
7331: }
7332: }
7333: }
7334: }
7335: }
7336:
7337: sub get_groups_roles {
7338: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
7339: return unless((ref($cdom_courseroles) eq 'HASH') &&
7340: (ref($rolecodes) eq 'ARRAY') &&
7341: (ref($groups_roles) eq 'HASH'));
7342: if (keys(%{$cdom_courseroles}) > 0) {
7343: my ($cnum) = ($rest =~ /^($match_courseid)/);
7344: if ($cdom ne '' && $cnum ne '') {
7345: foreach my $key (keys(%{$cdom_courseroles})) {
7346: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
7347: my $crsrole = $1;
7348: my $crssec = $2;
7349: if ($crsrole =~ /^cr/) {
7350: unless (grep(/^cr$/,@{$rolecodes})) {
7351: push(@{$rolecodes},'cr');
7352: }
7353: } else {
7354: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
7355: push(@{$rolecodes},$crsrole);
7356: }
7357: }
7358: my $rolekey = "$crsrole./$cdom/$cnum";
7359: if ($crssec ne '') {
7360: $rolekey .= "/$crssec";
7361: }
7362: $rolekey .= './';
7363: $groups_roles->{$rolekey} = $rolecodes;
7364: }
7365: }
7366: }
7367: }
7368: return;
7369: }
7370:
7371: sub delete_env_groupprivs {
7372: my ($where,$courseroles,$possroles) = @_;
7373: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
7374: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
7375: unless (ref($courseroles->{$udom}) eq 'HASH') {
7376: %{$courseroles->{$udom}} =
7377: &get_my_roles('','','userroles',['active'],
7378: $possroles,[$udom],1);
7379: }
7380: if (ref($courseroles->{$udom}) eq 'HASH') {
7381: foreach my $item (keys(%{$courseroles->{$udom}})) {
7382: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
7383: my $area = '/'.$cdom.'/'.$cnum;
7384: my $privkey = "user.priv.$crsrole.$area";
7385: if ($crssec ne '') {
7386: $privkey .= '/'.$crssec;
7387: }
7388: $privkey .= ".$area/$group";
7389: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
7390: }
7391: }
7392: return;
7393: }
7394:
7395: sub check_adhoc_privs {
7396: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller,$sec) = @_;
7397: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
7398: if ($sec) {
7399: $cckey .= '/'.$sec;
7400: }
7401: my $setprivs;
7402: if ($env{$cckey}) {
7403: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
7404: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
7405: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
7406: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
7407: $setprivs = 1;
7408: }
7409: } else {
7410: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
7411: $setprivs = 1;
7412: }
7413: return $setprivs;
7414: }
7415:
7416: sub set_adhoc_privileges {
7417: # role can be cc, ca, or cr/<dom>/<dom>-domainconfig/role
7418: my ($dcdom,$pickedcourse,$role,$caller,$sec) = @_;
7419: my $area = '/'.$dcdom.'/'.$pickedcourse;
7420: if ($sec ne '') {
7421: $area .= '/'.$sec;
7422: }
7423: my $spec = $role.'.'.$area;
7424: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
7425: $env{'user.name'},1);
7426: my %rolehash = ();
7427: if ($role =~ m{^\Qcr/$dcdom/$dcdom\E\-domainconfig/(\w+)$}) {
7428: my $rolename = $1;
7429: &custom_roleprivs(\%rolehash,$role,$dcdom,$pickedcourse,$spec,$area);
7430: my %domdef = &get_domain_defaults($dcdom);
7431: if (ref($domdef{'adhocroles'}) eq 'HASH') {
7432: if (ref($domdef{'adhocroles'}{$rolename}) eq 'HASH') {
7433: &appenv({'request.role.desc' => $domdef{'adhocroles'}{$rolename}{'desc'},});
7434: }
7435: }
7436: } else {
7437: &standard_roleprivs(\%rolehash,$role,$dcdom,$spec,$pickedcourse,$area);
7438: }
7439: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%rolehash);
7440: &appenv(\%userroles,[$role,'cm']);
7441: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
7442: unless (($caller eq 'constructaccess' && $env{'request.course.id'}) ||
7443: ($caller eq 'tiny')) {
7444: &appenv( {'request.role' => $spec,
7445: 'request.role.domain' => $dcdom,
7446: 'request.course.sec' => $sec,
7447: }
7448: );
7449: my $tadv=0;
7450: if (&allowed('adv') eq 'F') { $tadv=1; }
7451: &appenv({'request.role.adv' => $tadv});
7452: }
7453: }
7454:
7455: # --------------------------------------------------------------- get interface
7456:
7457: sub get {
7458: my ($namespace,$storearr,$udomain,$uname)=@_;
7459: my $items='';
7460: foreach my $item (@$storearr) {
7461: $items.=&escape($item).'&';
7462: }
7463: $items=~s/\&$//;
7464: if (!$udomain) { $udomain=$env{'user.domain'}; }
7465: if (!$uname) { $uname=$env{'user.name'}; }
7466: my $uhome=&homeserver($uname,$udomain);
7467:
7468: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
7469: my @pairs=split(/\&/,$rep);
7470: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
7471: return @pairs;
7472: }
7473: my %returnhash=();
7474: my $i=0;
7475: foreach my $item (@$storearr) {
7476: $returnhash{$item}=&thaw_unescape($pairs[$i]);
7477: $i++;
7478: }
7479: return %returnhash;
7480: }
7481:
7482: # --------------------------------------------------------------- del interface
7483:
7484: sub del {
7485: my ($namespace,$storearr,$udomain,$uname)=@_;
7486: my $items='';
7487: foreach my $item (@$storearr) {
7488: $items.=&escape($item).'&';
7489: }
7490:
7491: $items=~s/\&$//;
7492: if (!$udomain) { $udomain=$env{'user.domain'}; }
7493: if (!$uname) { $uname=$env{'user.name'}; }
7494: my $uhome=&homeserver($uname,$udomain);
7495: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
7496: }
7497:
7498: # -------------------------------------------------------------- dump interface
7499:
7500: sub unserialize {
7501: my ($rep, $escapedkeys) = @_;
7502:
7503: return {} if $rep =~ /^error/;
7504:
7505: my %returnhash=();
7506: foreach my $item (split(/\&/,$rep)) {
7507: my ($key, $value) = split(/=/, $item, 2);
7508: $key = unescape($key) unless $escapedkeys;
7509: next if $key =~ /^error: 2 /;
7510: $returnhash{$key} = &thaw_unescape($value);
7511: }
7512: #return %returnhash;
7513: return \%returnhash;
7514: }
7515:
7516: # see Lond::dump_with_regexp
7517: # if $escapedkeys hash keys won't get unescaped.
7518: sub dump {
7519: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys,$encrypt)=@_;
7520: if (!$udomain) { $udomain=$env{'user.domain'}; }
7521: if (!$uname) { $uname=$env{'user.name'}; }
7522: my $uhome=&homeserver($uname,$udomain);
7523:
7524: if ($regexp) {
7525: $regexp=&escape($regexp);
7526: } else {
7527: $regexp='.';
7528: }
7529: if (grep { $_ eq $uhome } current_machine_ids()) {
7530: # user is hosted on this machine
7531: my $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
7532: $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
7533: return %{unserialize($reply, $escapedkeys)};
7534: }
7535: my $rep;
7536: if ($encrypt) {
7537: $rep=&reply("encrypt:edump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
7538: } else {
7539: $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
7540: }
7541: my @pairs=split(/\&/,$rep);
7542: my %returnhash=();
7543: if (!($rep =~ /^error/ )) {
7544: foreach my $item (@pairs) {
7545: my ($key,$value)=split(/=/,$item,2);
7546: $key = unescape($key) unless $escapedkeys;
7547: #$key = &unescape($key);
7548: next if ($key =~ /^error: 2 /);
7549: $returnhash{$key}=&thaw_unescape($value);
7550: }
7551: }
7552: return %returnhash;
7553: }
7554:
7555:
7556: # --------------------------------------------------------- dumpstore interface
7557:
7558: sub dumpstore {
7559: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
7560: # same as dump but keys must be escaped. They may contain colon separated
7561: # lists of values that may themself contain colons (e.g. symbs).
7562: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
7563: }
7564:
7565: # -------------------------------------------------------------- keys interface
7566:
7567: sub getkeys {
7568: my ($namespace,$udomain,$uname)=@_;
7569: if (!$udomain) { $udomain=$env{'user.domain'}; }
7570: if (!$uname) { $uname=$env{'user.name'}; }
7571: my $uhome=&homeserver($uname,$udomain);
7572: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
7573: my @keyarray=();
7574: foreach my $key (split(/\&/,$rep)) {
7575: next if ($key =~ /^error: 2 /);
7576: push(@keyarray,&unescape($key));
7577: }
7578: return @keyarray;
7579: }
7580:
7581: # --------------------------------------------------------------- currentdump
7582: sub currentdump {
7583: my ($courseid,$sdom,$sname)=@_;
7584: $courseid = $env{'request.course.id'} if (! defined($courseid));
7585: $sdom = $env{'user.domain'} if (! defined($sdom));
7586: $sname = $env{'user.name'} if (! defined($sname));
7587: my $uhome = &homeserver($sname,$sdom);
7588: my $rep;
7589:
7590: if (grep { $_ eq $uhome } current_machine_ids()) {
7591: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
7592: $courseid)));
7593: } else {
7594: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
7595: }
7596:
7597: return if ($rep =~ /^(error:|no_such_host)/);
7598: #
7599: my %returnhash=();
7600: #
7601: if ($rep eq 'unknown_cmd') {
7602: # an old lond will not know currentdump
7603: # Do a dump and make it look like a currentdump
7604: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
7605: return if ($tmp[0] =~ /^(error:|no_such_host)/);
7606: my %hash = @tmp;
7607: @tmp=();
7608: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
7609: } else {
7610: my @pairs=split(/\&/,$rep);
7611: foreach my $pair (@pairs) {
7612: my ($key,$value)=split(/=/,$pair,2);
7613: my ($symb,$param) = split(/:/,$key);
7614: $returnhash{&unescape($symb)}->{&unescape($param)} =
7615: &thaw_unescape($value);
7616: }
7617: }
7618: return %returnhash;
7619: }
7620:
7621: sub convert_dump_to_currentdump{
7622: my %hash = %{shift()};
7623: my %returnhash;
7624: # Code ripped from lond, essentially. The only difference
7625: # here is the unescaping done by lonnet::dump(). Conceivably
7626: # we might run in to problems with parameter names =~ /^v\./
7627: while (my ($key,$value) = each(%hash)) {
7628: my ($v,$symb,$param) = split(/:/,$key);
7629: $symb = &unescape($symb);
7630: $param = &unescape($param);
7631: next if ($v eq 'version' || $symb eq 'keys');
7632: next if (exists($returnhash{$symb}) &&
7633: exists($returnhash{$symb}->{$param}) &&
7634: $returnhash{$symb}->{'v.'.$param} > $v);
7635: $returnhash{$symb}->{$param}=$value;
7636: $returnhash{$symb}->{'v.'.$param}=$v;
7637: }
7638: #
7639: # Remove all of the keys in the hashes which keep track of
7640: # the version of the parameter.
7641: while (my ($symb,$param_hash) = each(%returnhash)) {
7642: # use a foreach because we are going to delete from the hash.
7643: foreach my $key (keys(%$param_hash)) {
7644: delete($param_hash->{$key}) if ($key =~ /^v\./);
7645: }
7646: }
7647: return \%returnhash;
7648: }
7649:
7650: # ------------------------------------------------------ critical inc interface
7651:
7652: sub cinc {
7653: return &inc(@_,'critical');
7654: }
7655:
7656: # --------------------------------------------------------------- inc interface
7657:
7658: sub inc {
7659: my ($namespace,$store,$udomain,$uname,$critical) = @_;
7660: if (!$udomain) { $udomain=$env{'user.domain'}; }
7661: if (!$uname) { $uname=$env{'user.name'}; }
7662: my $uhome=&homeserver($uname,$udomain);
7663: my $items='';
7664: if (! ref($store)) {
7665: # got a single value, so use that instead
7666: $items = &escape($store).'=&';
7667: } elsif (ref($store) eq 'SCALAR') {
7668: $items = &escape($$store).'=&';
7669: } elsif (ref($store) eq 'ARRAY') {
7670: $items = join('=&',map {&escape($_);} @{$store});
7671: } elsif (ref($store) eq 'HASH') {
7672: while (my($key,$value) = each(%{$store})) {
7673: $items.= &escape($key).'='.&escape($value).'&';
7674: }
7675: }
7676: $items=~s/\&$//;
7677: if ($critical) {
7678: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
7679: } else {
7680: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
7681: }
7682: }
7683:
7684: # --------------------------------------------------------------- put interface
7685:
7686: sub put {
7687: my ($namespace,$storehash,$udomain,$uname,$encrypt)=@_;
7688: if (!$udomain) { $udomain=$env{'user.domain'}; }
7689: if (!$uname) { $uname=$env{'user.name'}; }
7690: my $uhome=&homeserver($uname,$udomain);
7691: my $items='';
7692: foreach my $item (keys(%$storehash)) {
7693: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
7694: }
7695: $items=~s/\&$//;
7696: if ($encrypt) {
7697: return &reply("encrypt:put:$udomain:$uname:$namespace:$items",$uhome);
7698: } else {
7699: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
7700: }
7701: }
7702:
7703: # ------------------------------------------------------------ newput interface
7704:
7705: sub newput {
7706: my ($namespace,$storehash,$udomain,$uname)=@_;
7707: if (!$udomain) { $udomain=$env{'user.domain'}; }
7708: if (!$uname) { $uname=$env{'user.name'}; }
7709: my $uhome=&homeserver($uname,$udomain);
7710: my $items='';
7711: foreach my $key (keys(%$storehash)) {
7712: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
7713: }
7714: $items=~s/\&$//;
7715: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
7716: }
7717:
7718: # --------------------------------------------------------- putstore interface
7719:
7720: sub putstore {
7721: my ($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog)=@_;
7722: if (!$udomain) { $udomain=$env{'user.domain'}; }
7723: if (!$uname) { $uname=$env{'user.name'}; }
7724: my $uhome=&homeserver($uname,$udomain);
7725: my $items='';
7726: foreach my $key (keys(%$storehash)) {
7727: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
7728: }
7729: $items=~s/\&$//;
7730: my $esc_symb=&escape($symb);
7731: my $esc_v=&escape($version);
7732: my $reply =
7733: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
7734: $uhome);
7735: if (($tolog) && ($reply eq 'ok')) {
7736: my $namevalue='';
7737: foreach my $key (keys(%{$storehash})) {
7738: $namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&';
7739: }
7740: my $ip = &get_requestor_ip();
7741: $namevalue .= 'ip='.&escape($ip).
7742: '&host='.&escape($perlvar{'lonHostID'}).
7743: '&version='.$esc_v.
7744: '&by='.&escape($env{'user.name'}.':'.$env{'user.domain'});
7745: &courselog($symb.':'.$uname.':'.$udomain.':PUTSTORE:'.$namevalue);
7746: }
7747: if ($reply eq 'unknown_cmd') {
7748: # gfall back to way things use to be done
7749: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
7750: $uname);
7751: }
7752: return $reply;
7753: }
7754:
7755: sub old_putstore {
7756: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
7757: if (!$udomain) { $udomain=$env{'user.domain'}; }
7758: if (!$uname) { $uname=$env{'user.name'}; }
7759: my $uhome=&homeserver($uname,$udomain);
7760: my %newstorehash;
7761: foreach my $item (keys(%$storehash)) {
7762: my $key = $version.':'.&escape($symb).':'.$item;
7763: $newstorehash{$key} = $storehash->{$item};
7764: }
7765: my $items='';
7766: my %allitems = ();
7767: foreach my $item (keys(%newstorehash)) {
7768: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
7769: my $key = $1.':keys:'.$2;
7770: $allitems{$key} .= $3.':';
7771: }
7772: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
7773: }
7774: foreach my $item (keys(%allitems)) {
7775: $allitems{$item} =~ s/\:$//;
7776: $items.= $item.'='.$allitems{$item}.'&';
7777: }
7778: $items=~s/\&$//;
7779: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
7780: }
7781:
7782: # ------------------------------------------------------ critical put interface
7783:
7784: sub cput {
7785: my ($namespace,$storehash,$udomain,$uname)=@_;
7786: if (!$udomain) { $udomain=$env{'user.domain'}; }
7787: if (!$uname) { $uname=$env{'user.name'}; }
7788: my $uhome=&homeserver($uname,$udomain);
7789: my $items='';
7790: foreach my $item (keys(%$storehash)) {
7791: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
7792: }
7793: $items=~s/\&$//;
7794: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
7795: }
7796:
7797: # -------------------------------------------------------------- eget interface
7798:
7799: sub eget {
7800: my ($namespace,$storearr,$udomain,$uname)=@_;
7801: my $items='';
7802: foreach my $item (@$storearr) {
7803: $items.=&escape($item).'&';
7804: }
7805: $items=~s/\&$//;
7806: if (!$udomain) { $udomain=$env{'user.domain'}; }
7807: if (!$uname) { $uname=$env{'user.name'}; }
7808: my $uhome=&homeserver($uname,$udomain);
7809: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
7810: my @pairs=split(/\&/,$rep);
7811: my %returnhash=();
7812: my $i=0;
7813: foreach my $item (@$storearr) {
7814: $returnhash{$item}=&thaw_unescape($pairs[$i]);
7815: $i++;
7816: }
7817: return %returnhash;
7818: }
7819:
7820: # ------------------------------------------------------------ tmpput interface
7821: sub tmpput {
7822: my ($storehash,$server,$context)=@_;
7823: my $items='';
7824: foreach my $item (keys(%$storehash)) {
7825: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
7826: }
7827: $items=~s/\&$//;
7828: if (defined($context)) {
7829: $items .= ':'.&escape($context);
7830: }
7831: return &reply("tmpput:$items",$server);
7832: }
7833:
7834: # ------------------------------------------------------------ tmpget interface
7835: sub tmpget {
7836: my ($token,$server)=@_;
7837: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
7838: my $rep=&reply("tmpget:$token",$server);
7839: my %returnhash;
7840: if ($rep =~ /^(con_lost|error|no_such_host)/i) {
7841: return %returnhash;
7842: }
7843: foreach my $item (split(/\&/,$rep)) {
7844: my ($key,$value)=split(/=/,$item);
7845: $returnhash{&unescape($key)}=&thaw_unescape($value);
7846: }
7847: return %returnhash;
7848: }
7849:
7850: # ------------------------------------------------------------ tmpdel interface
7851: sub tmpdel {
7852: my ($token,$server)=@_;
7853: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
7854: return &reply("tmpdel:$token",$server);
7855: }
7856:
7857: # ------------------------------------------------------------ get_timebased_id
7858:
7859: sub get_timebased_id {
7860: my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
7861: $maxtries) = @_;
7862: my ($newid,$error,$dellock);
7863: unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
7864: return ('','ok','invalid call to get suffix');
7865: }
7866:
7867: # set defaults for any optional args for which values were not supplied
7868: if ($who eq '') {
7869: $who = $env{'user.name'}.':'.$env{'user.domain'};
7870: }
7871: if (!$locktries) {
7872: $locktries = 3;
7873: }
7874: if (!$maxtries) {
7875: $maxtries = 10;
7876: }
7877:
7878: if (($cdom eq '') || ($cnum eq '')) {
7879: if ($env{'request.course.id'}) {
7880: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7881: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7882: }
7883: if (($cdom eq '') || ($cnum eq '')) {
7884: return ('','ok','call to get suffix not in course context');
7885: }
7886: }
7887:
7888: # construct locking item
7889: my $lockhash = {
7890: $prefix."\0".'locked_'.$keyid => $who,
7891: };
7892: my $tries = 0;
7893:
7894: # attempt to get lock on nohist_$namespace file
7895: my $gotlock = &newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
7896: while (($gotlock ne 'ok') && $tries <$locktries) {
7897: $tries ++;
7898: sleep 1;
7899: $gotlock = &newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
7900: }
7901:
7902: # attempt to get unique identifier, based on current timestamp
7903: if ($gotlock eq 'ok') {
7904: my %inuse = &dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
7905: my $id = time;
7906: $newid = $id;
7907: if ($idtype eq 'addcode') {
7908: $newid .= &sixnum_code();
7909: }
7910: my $idtries = 0;
7911: while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
7912: if ($idtype eq 'concat') {
7913: $newid = $id.$idtries;
7914: } elsif ($idtype eq 'addcode') {
7915: $newid = $newid.&sixnum_code();
7916: } else {
7917: $newid ++;
7918: }
7919: $idtries ++;
7920: }
7921: if (!exists($inuse{$prefix."\0".$newid})) {
7922: my %new_item = (
7923: $prefix."\0".$newid => $who,
7924: );
7925: my $putresult = &put('nohist_'.$namespace,\%new_item,
7926: $cdom,$cnum);
7927: if ($putresult ne 'ok') {
7928: undef($newid);
7929: $error = 'error saving new item: '.$putresult;
7930: }
7931: } else {
7932: undef($newid);
7933: $error = ('error: no unique suffix available for the new item ');
7934: }
7935: # remove lock
7936: my @del_lock = ($prefix."\0".'locked_'.$keyid);
7937: $dellock = &Apache::lonnet::del('nohist_'.$namespace,\@del_lock,$cdom,$cnum);
7938: } else {
7939: $error = "error: could not obtain lockfile\n";
7940: $dellock = 'ok';
7941: if (($prefix eq 'paste') && ($namespace eq 'courseeditor') && ($keyid eq 'num')) {
7942: $dellock = 'nolock';
7943: }
7944: }
7945: return ($newid,$dellock,$error);
7946: }
7947:
7948: sub sixnum_code {
7949: my $code;
7950: for (0..6) {
7951: $code .= int( rand(9) );
7952: }
7953: return $code;
7954: }
7955:
7956: # -------------------------------------------------- portfolio access checking
7957:
7958: sub portfolio_access {
7959: my ($requrl,$clientip) = @_;
7960: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
7961: my $result = &get_portfolio_access($udom,$unum,$file_name,$group,$clientip);
7962: if ($result) {
7963: my %setters;
7964: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
7965: my ($startblock,$endblock,$triggerblock,$by_ip,$blockdom) =
7966: &Apache::loncommon::blockcheck(\%setters,'port',$clientip,$unum,$udom);
7967: if (($startblock && $endblock) || ($by_ip)) {
7968: return 'B';
7969: }
7970: } else {
7971: my ($startblock,$endblock,$triggerblock,$by_ip,$blockdom) =
7972: &Apache::loncommon::blockcheck(\%setters,'port',$clientip);
7973: if (($startblock && $endblock) || ($by_ip)) {
7974: return 'B';
7975: }
7976: }
7977: }
7978: if ($result eq 'ok') {
7979: return 'F';
7980: } elsif ($result =~ /^[^:]+:guest_/) {
7981: return 'A';
7982: }
7983: return '';
7984: }
7985:
7986: sub get_portfolio_access {
7987: my ($udom,$unum,$file_name,$group,$clientip,$access_hash) = @_;
7988:
7989: if (!ref($access_hash)) {
7990: my $current_perms = &get_portfile_permissions($udom,$unum);
7991: my %access_controls = &get_access_controls($current_perms,$group,
7992: $file_name);
7993: $access_hash = $access_controls{$file_name};
7994: }
7995:
7996: my ($public,$guest,@domains,@users,@courses,@groups,@ips);
7997: my $now = time;
7998: if (ref($access_hash) eq 'HASH') {
7999: foreach my $key (keys(%{$access_hash})) {
8000: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
8001: if ($start > $now) {
8002: next;
8003: }
8004: if ($end && $end<$now) {
8005: next;
8006: }
8007: if ($scope eq 'public') {
8008: $public = $key;
8009: last;
8010: } elsif ($scope eq 'guest') {
8011: $guest = $key;
8012: } elsif ($scope eq 'domains') {
8013: push(@domains,$key);
8014: } elsif ($scope eq 'users') {
8015: push(@users,$key);
8016: } elsif ($scope eq 'course') {
8017: push(@courses,$key);
8018: } elsif ($scope eq 'group') {
8019: push(@groups,$key);
8020: } elsif ($scope eq 'ip') {
8021: push(@ips,$key);
8022: }
8023: }
8024: if ($public) {
8025: return 'ok';
8026: } elsif (@ips > 0) {
8027: my $allowed;
8028: foreach my $ipkey (@ips) {
8029: if (ref($access_hash->{$ipkey}{'ip'}) eq 'ARRAY') {
8030: if (&Apache::loncommon::check_ip_acc(join(',',@{$access_hash->{$ipkey}{'ip'}}),$clientip)) {
8031: $allowed = 1;
8032: last;
8033: }
8034: }
8035: }
8036: if ($allowed) {
8037: return 'ok';
8038: }
8039: }
8040: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
8041: if ($guest) {
8042: return $guest;
8043: }
8044: } else {
8045: if (@domains > 0) {
8046: foreach my $domkey (@domains) {
8047: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
8048: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
8049: return 'ok';
8050: }
8051: }
8052: }
8053: }
8054: if (@users > 0) {
8055: foreach my $userkey (@users) {
8056: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
8057: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
8058: if (ref($item) eq 'HASH') {
8059: if (($item->{'uname'} eq $env{'user.name'}) &&
8060: ($item->{'udom'} eq $env{'user.domain'})) {
8061: return 'ok';
8062: }
8063: }
8064: }
8065: }
8066: }
8067: }
8068: my %roleshash;
8069: my @courses_and_groups = @courses;
8070: push(@courses_and_groups,@groups);
8071: if (@courses_and_groups > 0) {
8072: my (%allgroups,%allroles);
8073: my ($start,$end,$role,$sec,$group);
8074: foreach my $envkey (%env) {
8075: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
8076: my $cid = $2.'_'.$3;
8077: if ($1 eq 'gr') {
8078: $group = $4;
8079: $allgroups{$cid}{$group} = $env{$envkey};
8080: } else {
8081: if ($4 eq '') {
8082: $sec = 'none';
8083: } else {
8084: $sec = $4;
8085: }
8086: $allroles{$cid}{$1}{$sec} = $env{$envkey};
8087: }
8088: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
8089: my $cid = $2.'_'.$3;
8090: if ($4 eq '') {
8091: $sec = 'none';
8092: } else {
8093: $sec = $4;
8094: }
8095: $allroles{$cid}{$1}{$sec} = $env{$envkey};
8096: }
8097: }
8098: if (keys(%allroles) == 0) {
8099: return;
8100: }
8101: foreach my $key (@courses_and_groups) {
8102: my %content = %{$$access_hash{$key}};
8103: my $cnum = $content{'number'};
8104: my $cdom = $content{'domain'};
8105: my $cid = $cdom.'_'.$cnum;
8106: if (!exists($allroles{$cid})) {
8107: next;
8108: }
8109: foreach my $role_id (keys(%{$content{'roles'}})) {
8110: my @sections = @{$content{'roles'}{$role_id}{'section'}};
8111: my @groups = @{$content{'roles'}{$role_id}{'group'}};
8112: my @status = @{$content{'roles'}{$role_id}{'access'}};
8113: my @roles = @{$content{'roles'}{$role_id}{'role'}};
8114: foreach my $role (keys(%{$allroles{$cid}})) {
8115: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
8116: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
8117: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
8118: if (grep/^all$/,@sections) {
8119: return 'ok';
8120: } else {
8121: if (grep/^$sec$/,@sections) {
8122: return 'ok';
8123: }
8124: }
8125: }
8126: }
8127: if (keys(%{$allgroups{$cid}}) == 0) {
8128: if (grep/^none$/,@groups) {
8129: return 'ok';
8130: }
8131: } else {
8132: if (grep/^all$/,@groups) {
8133: return 'ok';
8134: }
8135: foreach my $group (keys(%{$allgroups{$cid}})) {
8136: if (grep/^$group$/,@groups) {
8137: return 'ok';
8138: }
8139: }
8140: }
8141: }
8142: }
8143: }
8144: }
8145: }
8146: if ($guest) {
8147: return $guest;
8148: }
8149: }
8150: }
8151: return;
8152: }
8153:
8154: sub course_group_datechecker {
8155: my ($dates,$now,$status) = @_;
8156: my ($start,$end) = split(/\./,$dates);
8157: if (!$start && !$end) {
8158: return 'ok';
8159: }
8160: if (grep/^active$/,@{$status}) {
8161: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
8162: return 'ok';
8163: }
8164: }
8165: if (grep/^previous$/,@{$status}) {
8166: if ($end > $now ) {
8167: return 'ok';
8168: }
8169: }
8170: if (grep/^future$/,@{$status}) {
8171: if ($start > $now) {
8172: return 'ok';
8173: }
8174: }
8175: return;
8176: }
8177:
8178: sub parse_portfolio_url {
8179: my ($url) = @_;
8180:
8181: my ($type,$udom,$unum,$group,$file_name);
8182:
8183: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
8184: $type = 1;
8185: $udom = $1;
8186: $unum = $2;
8187: $file_name = $3;
8188: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
8189: $type = 2;
8190: $udom = $1;
8191: $unum = $2;
8192: $group = $3;
8193: $file_name = $3.'/'.$4;
8194: }
8195: if (wantarray) {
8196: return ($type,$udom,$unum,$file_name,$group);
8197: }
8198: return $type;
8199: }
8200:
8201: sub is_portfolio_url {
8202: my ($url) = @_;
8203: return scalar(&parse_portfolio_url($url));
8204: }
8205:
8206: sub is_portfolio_file {
8207: my ($file) = @_;
8208: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
8209: return 1;
8210: }
8211: return;
8212: }
8213:
8214: sub is_coursetool_logo {
8215: my ($uri) = @_;
8216: if ($env{'request.course.id'}) {
8217: my $courseurl = &courseid_to_courseurl($env{'request.course.id'});
8218: if ($uri =~ m{^/*uploaded\Q$courseurl\E/toollogo/\d+/[^/]+$}) {
8219: return 1;
8220: }
8221: }
8222: return;
8223: }
8224:
8225: sub usertools_access {
8226: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
8227: my ($access,%tools);
8228: if ($context eq '') {
8229: $context = 'tools';
8230: }
8231: if ($context eq 'requestcourses') {
8232: %tools = (
8233: official => 1,
8234: unofficial => 1,
8235: community => 1,
8236: textbook => 1,
8237: placement => 1,
8238: lti => 1,
8239: );
8240: } elsif ($context eq 'requestauthor') {
8241: %tools = (
8242: requestauthor => 1,
8243: );
8244: } elsif ($context eq 'authordefaults') {
8245: %tools = (
8246: webdav => 1,
8247: );
8248: } else {
8249: %tools = (
8250: aboutme => 1,
8251: blog => 1,
8252: portfolio => 1,
8253: portaccess => 1,
8254: timezone => 1,
8255: );
8256: }
8257: return if (!defined($tools{$tool}));
8258:
8259: if (($udom eq '') || ($uname eq '')) {
8260: $udom = $env{'user.domain'};
8261: $uname = $env{'user.name'};
8262: }
8263:
8264: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
8265: if ($action ne 'reload') {
8266: if ($context eq 'requestcourses') {
8267: return $env{'environment.canrequest.'.$tool};
8268: } elsif ($context eq 'requestauthor') {
8269: return $env{'environment.canrequest.author'};
8270: } elsif ($context eq 'authordefaults') {
8271: if ($tool eq 'webdav') {
8272: return $env{'environment.availabletools.'.$tool};
8273: }
8274: } else {
8275: return $env{'environment.availabletools.'.$tool};
8276: }
8277: }
8278: }
8279:
8280: my ($toolstatus,$inststatus,$envkey);
8281: if ($context eq 'requestauthor') {
8282: $envkey = $context;
8283: } elsif ($context eq 'authordefaults') {
8284: if ($tool eq 'webdav') {
8285: $envkey = 'tools.'.$tool;
8286: }
8287: } else {
8288: $envkey = $context.'.'.$tool;
8289: }
8290:
8291: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
8292: ($action ne 'reload')) {
8293: $toolstatus = $env{'environment.'.$envkey};
8294: $inststatus = $env{'environment.inststatus'};
8295: } else {
8296: if (ref($userenvref) eq 'HASH') {
8297: $toolstatus = $userenvref->{$envkey};
8298: $inststatus = $userenvref->{'inststatus'};
8299: } else {
8300: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
8301: $toolstatus = $userenv{$envkey};
8302: $inststatus = $userenv{'inststatus'};
8303: }
8304: }
8305:
8306: if ($toolstatus ne '') {
8307: if ($toolstatus) {
8308: $access = 1;
8309: } else {
8310: $access = 0;
8311: }
8312: return $access;
8313: }
8314:
8315: my ($is_adv,%domdef);
8316: if (ref($is_advref) eq 'HASH') {
8317: $is_adv = $is_advref->{'is_adv'};
8318: } else {
8319: $is_adv = &is_advanced_user($udom,$uname);
8320: }
8321: if (ref($domdefref) eq 'HASH') {
8322: %domdef = %{$domdefref};
8323: } else {
8324: %domdef = &get_domain_defaults($udom);
8325: }
8326: if (ref($domdef{$tool}) eq 'HASH') {
8327: if ($is_adv) {
8328: if ($domdef{$tool}{'_LC_adv'} ne '') {
8329: if ($domdef{$tool}{'_LC_adv'}) {
8330: $access = 1;
8331: } else {
8332: $access = 0;
8333: }
8334: return $access;
8335: }
8336: }
8337: if ($inststatus ne '') {
8338: my ($hasaccess,$hasnoaccess);
8339: foreach my $affiliation (split(/:/,$inststatus)) {
8340: if ($domdef{$tool}{$affiliation} ne '') {
8341: if ($domdef{$tool}{$affiliation}) {
8342: $hasaccess = 1;
8343: } else {
8344: $hasnoaccess = 1;
8345: }
8346: }
8347: }
8348: if ($hasaccess || $hasnoaccess) {
8349: if ($hasaccess) {
8350: $access = 1;
8351: } elsif ($hasnoaccess) {
8352: $access = 0;
8353: }
8354: return $access;
8355: }
8356: } else {
8357: if ($domdef{$tool}{'default'} ne '') {
8358: if ($domdef{$tool}{'default'}) {
8359: $access = 1;
8360: } elsif ($domdef{$tool}{'default'} == 0) {
8361: $access = 0;
8362: }
8363: return $access;
8364: }
8365: }
8366: } else {
8367: if (($context eq 'tools') && ($tool ne 'webdav')) {
8368: $access = 1;
8369: } else {
8370: $access = 0;
8371: }
8372: return $access;
8373: }
8374: }
8375:
8376: sub is_course_owner {
8377: my ($cdom,$cnum,$udom,$uname) = @_;
8378: if (($udom eq '') || ($uname eq '')) {
8379: $udom = $env{'user.domain'};
8380: $uname = $env{'user.name'};
8381: }
8382: unless (($udom eq '') || ($uname eq '')) {
8383: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
8384: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
8385: return 1;
8386: } else {
8387: my %courseinfo = &coursedescription($cdom.'/'.$cnum);
8388: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
8389: return 1;
8390: }
8391: }
8392: }
8393: }
8394: return;
8395: }
8396:
8397: sub is_advanced_user {
8398: my ($udom,$uname,$nocache) = @_;
8399: my ($is_adv,$is_author,$use_cache,$hashid);
8400: if ($udom ne '' && $uname ne '') {
8401: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
8402: if (wantarray) {
8403: return ($env{'user.adv'},$env{'user.author'});
8404: } else {
8405: return $env{'user.adv'};
8406: }
8407: } elsif (!$nocache) {
8408: $use_cache = 1;
8409: $hashid = "$udom:$uname";
8410: my ($info,$cached)=&is_cached_new('isadvau',$hashid);
8411: if ($cached) {
8412: ($is_adv,$is_author) = split(/:/,$info);
8413: if (wantarray) {
8414: return ($is_adv,$is_author);
8415: }
8416: return $is_adv;
8417: }
8418: }
8419: }
8420: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
8421: my %allroles;
8422: foreach my $role (keys(%roleshash)) {
8423: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
8424: my $area = '/'.$tdomain.'/'.$trest;
8425: if ($sec ne '') {
8426: $area .= '/'.$sec;
8427: }
8428: if (($area ne '') && ($trole ne '')) {
8429: my $spec=$trole.'.'.$area;
8430: if ($trole =~ /^cr\//) {
8431: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
8432: } elsif ($trole ne 'gr') {
8433: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
8434: }
8435: if ($trole eq 'au') {
8436: $is_author = 1;
8437: }
8438: }
8439: }
8440: foreach my $role (keys(%allroles)) {
8441: last if ($is_adv);
8442: foreach my $item (split(/:/,$allroles{$role})) {
8443: if ($item ne '') {
8444: my ($privilege,$restrictions)=split(/&/,$item);
8445: if ($privilege eq 'adv') {
8446: $is_adv = 1;
8447: last;
8448: }
8449: }
8450: }
8451: }
8452: if ($use_cache) {
8453: my $cachetime = 600;
8454: &do_cache_new('isadvau',$hashid,$is_adv.':'.$is_author,$cachetime);
8455: }
8456: if (wantarray) {
8457: return ($is_adv,$is_author);
8458: }
8459: return $is_adv;
8460: }
8461:
8462: sub check_can_request {
8463: my ($dom,$can_request,$request_domains,$uname,$udom) = @_;
8464: my $canreq = 0;
8465: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
8466: $uname = $env{'user.name'};
8467: $udom = $env{'user.domain'};
8468: }
8469: my ($types,$typename) = &Apache::loncommon::course_types();
8470: my @options = ('approval','validate','autolimit');
8471: my $optregex = join('|',@options);
8472: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
8473: my %willtrust;
8474: foreach my $type (@{$types}) {
8475: if (&usertools_access($uname,$udom,$type,undef,
8476: 'requestcourses')) {
8477: $canreq ++;
8478: if (ref($request_domains) eq 'HASH') {
8479: push(@{$request_domains->{$type}},$udom);
8480: }
8481: if ($dom eq $udom) {
8482: $can_request->{$type} = 1;
8483: }
8484: }
8485: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '') &&
8486: ($env{'environment.reqcrsotherdom.'.$type} ne '')) {
8487: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
8488: if (@curr > 0) {
8489: foreach my $item (@curr) {
8490: if (ref($request_domains) eq 'HASH') {
8491: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
8492: if ($otherdom ne '') {
8493: unless (exists($willtrust{$otherdom})) {
8494: $willtrust{$otherdom} = &will_trust('reqcrs',$env{'user.domain'},$otherdom);
8495: }
8496: if ($willtrust{$otherdom}) {
8497: if (ref($request_domains->{$type}) eq 'ARRAY') {
8498: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
8499: push(@{$request_domains->{$type}},$otherdom);
8500: }
8501: } else {
8502: push(@{$request_domains->{$type}},$otherdom);
8503: }
8504: }
8505: }
8506: }
8507: }
8508: unless ($dom eq $env{'user.domain'}) {
8509: $canreq ++;
8510: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
8511: $can_request->{$type} = 1;
8512: }
8513: }
8514: }
8515: }
8516: }
8517: }
8518: return $canreq;
8519: }
8520:
8521: # ---------------------------------------------- Custom access rule evaluation
8522:
8523: sub customaccess {
8524: my ($priv,$uri)=@_;
8525: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
8526: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
8527: $udom = &LONCAPA::clean_domain($udom);
8528: $ucrs = &LONCAPA::clean_username($ucrs);
8529: my $access=0;
8530: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
8531: my ($effect,$realm,$role,$type)=split(/\:/,$right);
8532: if ($type eq 'user') {
8533: foreach my $scope (split(/\s*\,\s*/,$realm)) {
8534: my ($tdom,$tuname)=split(m{/},$scope);
8535: if ($tdom) {
8536: if ($tdom ne $env{'user.domain'}) { next; }
8537: }
8538: if ($tuname) {
8539: if ($tuname ne $env{'user.name'}) { next; }
8540: }
8541: $access=($effect eq 'allow');
8542: last;
8543: }
8544: } else {
8545: if ($role) {
8546: if ($role ne $urole) { next; }
8547: }
8548: foreach my $scope (split(/\s*\,\s*/,$realm)) {
8549: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
8550: if ($tdom) {
8551: if ($tdom ne $udom) { next; }
8552: }
8553: if ($tcrs) {
8554: if ($tcrs ne $ucrs) { next; }
8555: }
8556: if ($tsec) {
8557: if ($tsec ne $usec) { next; }
8558: }
8559: $access=($effect eq 'allow');
8560: last;
8561: }
8562: if ($realm eq '' && $role eq '') {
8563: $access=($effect eq 'allow');
8564: }
8565: }
8566: }
8567: return $access;
8568: }
8569:
8570: # ------------------------------------------------- Check for a user privilege
8571:
8572: sub allowed {
8573: my ($priv,$uri,$symb,$role,$clientip,$noblockcheck,$ignorecache,$nodeeplinkcheck,$nodeeplinkout)=@_;
8574: my $ver_orguri=$uri;
8575: $uri=&deversion($uri);
8576: my $orguri=$uri;
8577: $uri=&declutter($uri);
8578:
8579: if ($priv eq 'evb') {
8580: # Evade communication block restrictions for specified role in a course or domain
8581: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
8582: return $1;
8583: } else {
8584: return;
8585: }
8586: }
8587:
8588: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
8589: # Free bre access to adm and meta resources
8590: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard|viewclasslist|aboutme|ext\.tool)$}))
8591: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
8592: && ($priv eq 'bre')) {
8593: return 'F';
8594: }
8595:
8596: # Free bre access to user's own portfolio contents
8597: my ($space,$domain,$name,@dir)=split('/',$uri);
8598: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
8599: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
8600: my %setters;
8601: my ($startblock,$endblock,$triggerblock,$by_ip,$blockdom) =
8602: &Apache::loncommon::blockcheck(\%setters,'port',$clientip);
8603: if (($startblock && $endblock) || ($by_ip)) {
8604: return 'B';
8605: } else {
8606: return 'F';
8607: }
8608: }
8609:
8610: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
8611: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
8612: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
8613: if (exists($env{'request.course.id'})) {
8614: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8615: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
8616: if (($domain eq $cdom) && ($name eq $cnum)) {
8617: my $courseprivid=$env{'request.course.id'};
8618: $courseprivid=~s/\_/\//;
8619: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
8620: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
8621: return $1;
8622: } else {
8623: if ($env{'request.course.sec'}) {
8624: $courseprivid.='/'.$env{'request.course.sec'};
8625: }
8626: if ($env{'user.priv.'.$env{'request.role'}.'./'.
8627: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
8628: return $2;
8629: }
8630: }
8631: }
8632: }
8633: }
8634:
8635: # Free bre to public access
8636:
8637: if ($priv eq 'bre') {
8638: my $copyright;
8639: unless ($uri =~ /ext\.tool/) {
8640: $copyright=&metadata($uri,'copyright');
8641: }
8642: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
8643: return 'F';
8644: }
8645: if ($copyright eq 'priv') {
8646: $uri=~/([^\/]+)\/([^\/]+)\//;
8647: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
8648: return '';
8649: }
8650: }
8651: if ($copyright eq 'domain') {
8652: $uri=~/([^\/]+)\/([^\/]+)\//;
8653: unless (($env{'user.domain'} eq $1) ||
8654: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
8655: return '';
8656: }
8657: }
8658: if ($env{'request.role'}=~ /li\.\//) {
8659: # Library role, so allow browsing of resources in this domain.
8660: return 'F';
8661: }
8662: if ($copyright eq 'custom') {
8663: unless (&customaccess($priv,$uri)) { return ''; }
8664: }
8665: }
8666: # Domain coordinator is trying to create a course
8667: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
8668: # uri is the requested domain in this case.
8669: # comparison to 'request.role.domain' shows if the user has selected
8670: # a role of dc for the domain in question.
8671: return 'F' if ($uri eq $env{'request.role.domain'});
8672: }
8673:
8674: my $thisallowed='';
8675: my $statecond=0;
8676: my $courseprivid='';
8677:
8678: my $ownaccess;
8679: # Community Coordinator or Assistant Co-author browsing resource space.
8680: if (($priv eq 'bro') && ($env{'user.author'})) {
8681: if ($uri eq '') {
8682: $ownaccess = 1;
8683: } else {
8684: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
8685: my $udom = $env{'user.domain'};
8686: my $uname = $env{'user.name'};
8687: if ($uri =~ m{^\Q$udom\E/?$}) {
8688: $ownaccess = 1;
8689: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
8690: unless ($uri =~ m{\.\./}) {
8691: $ownaccess = 1;
8692: }
8693: } elsif (($udom ne 'public') && ($uname ne 'public')) {
8694: my $now = time;
8695: if ($uri =~ m{^([^/]+)/?$}) {
8696: my $adom = $1;
8697: foreach my $key (keys(%env)) {
8698: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
8699: my ($start,$end) = split(/\./,$env{$key});
8700: if (($now >= $start) && (!$end || $end > $now)) {
8701: $ownaccess = 1;
8702: last;
8703: }
8704: }
8705: }
8706: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
8707: my $adom = $1;
8708: my $aname = $2;
8709: foreach my $role ('ca','aa') {
8710: if ($env{"user.role.$role./$adom/$aname"}) {
8711: my ($start,$end) =
8712: split(/\./,$env{"user.role.$role./$adom/$aname"});
8713: if (($now >= $start) && (!$end || $end > $now)) {
8714: $ownaccess = 1;
8715: last;
8716: }
8717: }
8718: }
8719: }
8720: }
8721: }
8722: }
8723: }
8724:
8725: # Course
8726:
8727: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
8728: unless (($priv eq 'bro') && (!$ownaccess)) {
8729: $thisallowed.=$1;
8730: }
8731: }
8732:
8733: # Domain
8734:
8735: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
8736: =~/\Q$priv\E\&([^\:]*)/) {
8737: unless (($priv eq 'bro') && (!$ownaccess)) {
8738: $thisallowed.=$1;
8739: }
8740: }
8741:
8742: # User who is not author or co-author might still be able to edit
8743: # resource of an author in the domain (e.g., if Domain Coordinator).
8744: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
8745: (&allowed('mdc',$env{'request.course.id'}))) {
8746: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
8747: $thisallowed.=$1;
8748: }
8749: }
8750:
8751: # Course: uri itself is a course
8752: my $courseuri=$uri;
8753: $courseuri=~s/\_(\d)/\/$1/;
8754: $courseuri=~s/^([^\/])/\/$1/;
8755:
8756: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
8757: =~/\Q$priv\E\&([^\:]*)/) {
8758: if ($priv eq 'mip') {
8759: my $rem = $1;
8760: if (($uri ne '') && ($env{'request.course.id'} eq $uri) &&
8761: ($env{'course.'.$env{'request.course.id'}.'.internal.courseowner'} eq $env{'user.name'}.':'.$env{'user.domain'})) {
8762: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8763: if ($cdom ne '') {
8764: my %passwdconf = &get_passwdconf($cdom);
8765: if (ref($passwdconf{'crsownerchg'}) eq 'HASH') {
8766: if (ref($passwdconf{'crsownerchg'}{'by'}) eq 'ARRAY') {
8767: if (@{$passwdconf{'crsownerchg'}{'by'}}) {
8768: my @inststatuses = split(':',$env{'environment.inststatus'});
8769: unless (@inststatuses) {
8770: @inststatuses = ('default');
8771: }
8772: foreach my $status (@inststatuses) {
8773: if (grep(/^\Q$status\E$/,@{$passwdconf{'crsownerchg'}{'by'}})) {
8774: $thisallowed.=$rem;
8775: }
8776: }
8777: }
8778: }
8779: }
8780: }
8781: }
8782: } else {
8783: unless (($priv eq 'bro') && (!$ownaccess)) {
8784: $thisallowed.=$1;
8785: }
8786: }
8787: }
8788:
8789: # URI is an uploaded document for this course, default permissions don't matter
8790: # not allowing 'edit' access (editupload) to uploaded course docs
8791: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
8792: $thisallowed='';
8793: my ($match)=&is_on_map($uri);
8794: if ($match) {
8795: if ($env{'user.priv.'.$env{'request.role'}.'./'}
8796: =~/\Q$priv\E\&([^\:]*)/) {
8797: my $value = $1;
8798: my $deeplinkblock;
8799: unless ($nodeeplinkcheck) {
8800: $deeplinkblock = &deeplink_check($priv,$symb,$uri);
8801: }
8802: if ($deeplinkblock) {
8803: $thisallowed='D';
8804: } elsif ($noblockcheck) {
8805: $thisallowed.=$value;
8806: } else {
8807: my @blockers = &has_comm_blocking($priv,$symb,$uri,$ignorecache);
8808: if (@blockers > 0) {
8809: $thisallowed = 'B';
8810: } else {
8811: $thisallowed.=$value;
8812: }
8813: }
8814: }
8815: } else {
8816: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
8817: if ($refuri) {
8818: if ($refuri =~ m|^/adm/|) {
8819: $thisallowed='F';
8820: } else {
8821: $refuri=&declutter($refuri);
8822: my ($match) = &is_on_map($refuri);
8823: if ($match) {
8824: my $deeplinkblock;
8825: unless ($nodeeplinkcheck) {
8826: $deeplinkblock = &deeplink_check($priv,$symb,$refuri);
8827: }
8828: if ($deeplinkblock) {
8829: $thisallowed='D';
8830: } elsif ($noblockcheck) {
8831: $thisallowed='F';
8832: } else {
8833: my @blockers = &has_comm_blocking($priv,'',$refuri,'',1);
8834: if (@blockers > 0) {
8835: $thisallowed = 'B';
8836: } else {
8837: $thisallowed='F';
8838: }
8839: }
8840: }
8841: }
8842: }
8843: }
8844: }
8845:
8846: if ($priv eq 'bre'
8847: && $thisallowed ne 'F'
8848: && $thisallowed ne '2'
8849: && &is_portfolio_url($uri)) {
8850: $thisallowed = &portfolio_access($uri,$clientip);
8851: }
8852:
8853: # Full access at system, domain or course-wide level? Exit.
8854: if ($thisallowed=~/F/) {
8855: return 'F';
8856: }
8857:
8858: # If this is generating or modifying users, exit with special codes
8859:
8860: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:vca:vaa:'=~/\:\Q$priv\E\:/) {
8861: if (($priv eq 'cca') || ($priv eq 'caa')) {
8862: my ($audom,$auname)=split('/',$uri);
8863: # no author name given, so this just checks on the general right to make a co-author in this domain
8864: unless ($auname) { return $thisallowed; }
8865: # an author name is given, so we are about to actually make a co-author for a certain account
8866: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
8867: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
8868: ($audom ne $env{'request.role.domain'}))) { return ''; }
8869: } elsif (($priv eq 'vca') || ($priv eq 'vaa')) {
8870: my ($audom,$auname)=split('/',$uri);
8871: unless ($auname) { return $thisallowed; }
8872: unless (($env{'request.role'} eq "dc./$audom") ||
8873: ($env{'request.role'} eq "ca./$uri")) {
8874: return '';
8875: }
8876: }
8877: return $thisallowed;
8878: }
8879: #
8880: # Gathered so far: system, domain and course wide privileges
8881: #
8882: # Course: See if uri or referer is an individual resource that is part of
8883: # the course
8884:
8885: if ($env{'request.course.id'}) {
8886:
8887: if ($priv eq 'bre') {
8888: if (&is_coursetool_logo($uri)) {
8889: return 'F';
8890: }
8891: }
8892:
8893: # If this is modifying password (internal auth) domains must match for user and user's role.
8894:
8895: if ($priv eq 'mip') {
8896: if ($env{'user.domain'} eq $env{'request.role.domain'}) {
8897: return $thisallowed;
8898: } else {
8899: return '';
8900: }
8901: }
8902:
8903: $courseprivid=$env{'request.course.id'};
8904: if ($env{'request.course.sec'}) {
8905: $courseprivid.='/'.$env{'request.course.sec'};
8906: }
8907: $courseprivid=~s/\_/\//;
8908: my $checkreferer=1;
8909: my ($match,$cond)=&is_on_map($uri);
8910: if ($match) {
8911: $statecond=$cond;
8912: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
8913: =~/\Q$priv\E\&([^\:]*)/) {
8914: my $value = $1;
8915: if ($priv eq 'bre') {
8916: my $deeplinkblock;
8917: unless ($nodeeplinkcheck) {
8918: $deeplinkblock = &deeplink_check($priv,$symb,$uri);
8919: }
8920: if ($deeplinkblock) {
8921: $thisallowed = 'D';
8922: } elsif ($noblockcheck) {
8923: $thisallowed.=$value;
8924: } else {
8925: my @blockers = &has_comm_blocking($priv,$symb,$uri,$ignorecache);
8926: if (@blockers > 0) {
8927: $thisallowed = 'B';
8928: } else {
8929: $thisallowed.=$value;
8930: }
8931: }
8932: } else {
8933: $thisallowed.=$value;
8934: }
8935: $checkreferer=0;
8936: }
8937: }
8938:
8939: if ($checkreferer) {
8940: my $refuri=$env{'httpref.'.$orguri};
8941: unless ($refuri) {
8942: foreach my $key (keys(%env)) {
8943: if ($key=~/^httpref\..*\*/) {
8944: my $pattern=$key;
8945: $pattern=~s/^httpref\.\/res\///;
8946: $pattern=~s/\*/\[\^\/\]\+/g;
8947: $pattern=~s/\//\\\//g;
8948: if ($orguri=~/$pattern/) {
8949: $refuri=$env{$key};
8950: }
8951: }
8952: }
8953: }
8954:
8955: if ($refuri) {
8956: $refuri=&declutter($refuri);
8957: my ($match,$cond)=&is_on_map($refuri);
8958: if ($match) {
8959: my $refstatecond=$cond;
8960: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
8961: =~/\Q$priv\E\&([^\:]*)/) {
8962: my $value = $1;
8963: if ($priv eq 'bre') {
8964: my $deeplinkblock;
8965: unless ($nodeeplinkcheck) {
8966: $deeplinkblock = &deeplink_check($priv,$symb,$refuri);
8967: }
8968: if ($deeplinkblock) {
8969: $thisallowed = 'D';
8970: } elsif ($noblockcheck) {
8971: $thisallowed.=$value;
8972: } else {
8973: my @blockers = &has_comm_blocking($priv,'',$refuri,'',1);
8974: if (@blockers > 0) {
8975: $thisallowed = 'B';
8976: } else {
8977: $thisallowed.=$value;
8978: }
8979: }
8980: } else {
8981: $thisallowed.=$value;
8982: }
8983: $uri=$refuri;
8984: $statecond=$refstatecond;
8985: }
8986: }
8987: }
8988: }
8989: }
8990:
8991: #
8992: # Gathered now: all privileges that could apply, and condition number
8993: #
8994: #
8995: # Full or no access?
8996: #
8997:
8998: if ($thisallowed=~/F/) {
8999: return 'F';
9000: }
9001:
9002: unless ($thisallowed) {
9003: return '';
9004: }
9005:
9006: # Restrictions exist, deal with them
9007: #
9008: # C:according to course preferences
9009: # R:according to resource settings
9010: # L:unless locked
9011: # X:according to user session state
9012: #
9013:
9014: # Possibly locked functionality, check all courses
9015: # In roles.tab, L (unless locked) available for bre, pch, plc, pac and sma.
9016: # Locks might take effect only after 10 minutes cache expiration for other
9017: # courses, and 2 minutes for current course, in which user has st or ta role
9018: # which is neither expired nor a future role (unless current course).
9019:
9020: my ($needlockcheck,$now,$crsonly);
9021: if ($thisallowed=~/L/) {
9022: $now = time;
9023: if ($priv eq 'bre') {
9024: if ($uri ne '') {
9025: if ($orguri =~ m{^/+res/}) {
9026: if ($uri =~ m{^lib/templates/}) {
9027: if ($env{'request.course.id'}) {
9028: $crsonly = 1;
9029: $needlockcheck = 1;
9030: }
9031: } else {
9032: $needlockcheck = 1;
9033: }
9034: } elsif ($env{'request.course.id'}) {
9035: my ($crsdom,$crsnum) = split('_',$env{'request.course.id'});
9036: if (($uri =~ m{^(adm|uploaded|public)/$crsdom/$crsnum/}) ||
9037: ($uri =~ m{^adm/$match_domain/$match_username/\d+/(smppg|bulletinboard)$})) {
9038: $crsonly = 1;
9039: }
9040: $needlockcheck = 1;
9041: }
9042: }
9043: } elsif (($priv eq 'pch') || ($priv eq 'plc') || ($priv eq 'pac') || ($priv eq 'sma')) {
9044: $needlockcheck = 1;
9045: }
9046: }
9047: if ($needlockcheck) {
9048: foreach my $envkey (keys(%env)) {
9049: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
9050: my $courseid=$2;
9051: my $roleid=$1.'.'.$2;
9052: $courseid=~s/^\///;
9053: unless ($env{'request.role'} eq $roleid) {
9054: my ($start,$end) = split(/\./,$env{$envkey});
9055: next unless (($now >= $start) && (!$end || $end > $now));
9056: }
9057: my $expiretime=600;
9058: if ($env{'request.role'} eq $roleid) {
9059: $expiretime=120;
9060: }
9061: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
9062: my $prefix='course.'.$cdom.'_'.$cnum.'.';
9063: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
9064: &coursedescription($courseid,{'freshen_cache' => 1});
9065: }
9066: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
9067: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
9068: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
9069: &log($env{'user.domain'},$env{'user.name'},
9070: $env{'user.home'},
9071: 'Locked by res: '.$priv.' for '.$uri.' due to '.
9072: $cdom.'/'.$cnum.'/'.$csec.' expire '.
9073: $env{$prefix.'priv.'.$priv.'.lock.expire'});
9074: return '';
9075: }
9076: }
9077: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
9078: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
9079: if ($env{$prefix.'priv.'.$priv.'.lock.expire'}>time) {
9080: &log($env{'user.domain'},$env{'user.name'},
9081: $env{'user.home'},
9082: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
9083: $cdom.'/'.$cnum.'/'.$csec.' expire '.
9084: $env{$prefix.'priv.'.$priv.'.lock.expire'});
9085: return '';
9086: }
9087: }
9088: }
9089: }
9090: }
9091:
9092: #
9093: # Rest of the restrictions depend on selected course
9094: #
9095:
9096: unless ($env{'request.course.id'}) {
9097: if ($thisallowed eq 'A') {
9098: return 'A';
9099: } elsif ($thisallowed eq 'B') {
9100: return 'B';
9101: } else {
9102: return '1';
9103: }
9104: }
9105:
9106: #
9107: # Now user is definitely in a course
9108: #
9109:
9110:
9111: # Course preferences
9112:
9113: if ($thisallowed=~/C/) {
9114: my $rolecode=(split(/\./,$env{'request.role'}))[0];
9115: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
9116: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
9117: =~/\Q$rolecode\E/) {
9118: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
9119: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
9120: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
9121: $env{'request.course.id'});
9122: }
9123: return '';
9124: }
9125:
9126: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
9127: =~/\Q$unamedom\E/) {
9128: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
9129: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
9130: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
9131: $env{'request.course.id'});
9132: }
9133: return '';
9134: }
9135: }
9136:
9137: # Resource preferences
9138:
9139: if ($thisallowed=~/R/) {
9140: my $rolecode=(split(/\./,$env{'request.role'}))[0];
9141: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
9142: if (($priv ne 'pch') && ($priv ne 'plc')) {
9143: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
9144: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
9145: }
9146: return '';
9147: }
9148: }
9149:
9150: # Restricted for deeplinked session?
9151:
9152: if ($env{'request.deeplink.login'}) {
9153: if ($env{'acc.deeplinkout'} && !$nodeeplinkout) {
9154: if (!$symb) { $symb=&symbread($uri,1); }
9155: if (($symb) && ($env{'acc.deeplinkout'}=~/\&\Q$symb\E\&/)) {
9156: return '';
9157: }
9158: }
9159: }
9160:
9161: # Restricted by state or randomout?
9162:
9163: if ($thisallowed=~/X/) {
9164: if ($env{'acc.randomout'}) {
9165: if (!$symb) { $symb=&symbread($uri,1); }
9166: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
9167: return '';
9168: }
9169: }
9170: if (&condval($statecond)) {
9171: return '2';
9172: } else {
9173: return '';
9174: }
9175: }
9176:
9177: if ($thisallowed eq 'A') {
9178: return 'A';
9179: } elsif ($thisallowed eq 'B') {
9180: return 'B';
9181: } elsif ($thisallowed eq 'D') {
9182: return 'D';
9183: }
9184: return 'F';
9185: }
9186:
9187: # ------------------------------------------- Check construction space access
9188:
9189: sub constructaccess {
9190: my ($url,$setpriv)=@_;
9191:
9192: # We do not allow editing of previous versions of files
9193: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
9194:
9195: # Get username and domain from URL
9196: my ($ownername,$ownerdomain,$ownerhome);
9197:
9198: ($ownerdomain,$ownername) =
9199: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)(?:/daxepage|/daxeopen)?/priv/($match_domain)/($match_username)(?:/|$)});
9200:
9201: # The URL does not really point to any authorspace, forget it
9202: unless (($ownername) && ($ownerdomain)) { return ''; }
9203:
9204: # Now we need to see if the user has access to the authorspace of
9205: # $ownername at $ownerdomain
9206:
9207: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
9208: # Real author for this?
9209: $ownerhome = $env{'user.home'};
9210: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
9211: return ($ownername,$ownerdomain,$ownerhome);
9212: }
9213: } elsif (&is_course($ownerdomain,$ownername)) {
9214: # Course Authoring Space?
9215: if ($env{'request.course.id'}) {
9216: if (($ownername eq $env{'course.'.$env{'request.course.id'}.'.num'}) &&
9217: ($ownerdomain eq $env{'course.'.$env{'request.course.id'}.'.domain'})) {
9218: if (&allowed('mdc',$env{'request.course.id'})) {
9219: $ownerhome = $env{'course.'.$env{'request.course.id'}.'.home'};
9220: return ($ownername,$ownerdomain,$ownerhome);
9221: }
9222: }
9223: }
9224: return '';
9225: } else {
9226: # Co-author for this?
9227: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
9228: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
9229: $ownerhome = &homeserver($ownername,$ownerdomain);
9230: return ($ownername,$ownerdomain,$ownerhome);
9231: }
9232: }
9233:
9234: # We don't have any access right now. If we are not possibly going to do anything about this,
9235: # we might as well leave
9236: unless ($setpriv) { return ''; }
9237:
9238: # Backdoor access?
9239: my $allowed=&allowed('eco',$ownerdomain);
9240: # Nope
9241: unless ($allowed) { return ''; }
9242: # Looks like we may have access, but could be locked by the owner of the construction space
9243: if ($allowed eq 'U') {
9244: my %blocked=&get('environment',['domcoord.author'],
9245: $ownerdomain,$ownername);
9246: # Is blocked by owner
9247: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
9248: }
9249: if (($allowed eq 'F') || ($allowed eq 'U')) {
9250: # Grant temporary access
9251: my $then=$env{'user.login.time'};
9252: my $update=$env{'user.update.time'};
9253: if (!$update) { $update = $then; }
9254: my $refresh=$env{'user.refresh.time'};
9255: if (!$refresh) { $refresh = $update; }
9256: my $now = time;
9257: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
9258: $now,'ca','constructaccess');
9259: $ownerhome = &homeserver($ownername,$ownerdomain);
9260: return($ownername,$ownerdomain,$ownerhome);
9261: }
9262: # No business here
9263: return '';
9264: }
9265:
9266: # ----------------------------------------------------------- Content Blocking
9267:
9268: {
9269: # Caches for faster Course Contents display where content blocking
9270: # is in operation (i.e., interval param set) for timed quiz.
9271: #
9272: # User for whom data are being temporarily cached.
9273: my $cacheduser='';
9274: # Course for which data are being temporarily cached.
9275: my $cachedcid='';
9276: # Cached blockers for this user (a hash of blocking items).
9277: my %cachedblockers=();
9278: # When the data were last cached.
9279: my $cachedlast='';
9280:
9281: sub load_all_blockers {
9282: my ($uname,$udom)=@_;
9283: if (($uname ne '') && ($udom ne '')) {
9284: if (($cacheduser eq $uname.':'.$udom) &&
9285: ($cachedcid eq $env{'request.course.id'}) &&
9286: (abs($cachedlast-time)<5)) {
9287: return;
9288: }
9289: }
9290: $cachedlast=time;
9291: $cacheduser=$uname.':'.$udom;
9292: $cachedcid=$env{'request.course.id'};
9293: %cachedblockers = &get_commblock_resources();
9294: return;
9295: }
9296:
9297: sub get_comm_blocks {
9298: my ($cdom,$cnum) = @_;
9299: if ($cdom eq '' || $cnum eq '') {
9300: return unless ($env{'request.course.id'});
9301: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
9302: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
9303: }
9304: my %commblocks;
9305: my $hashid=$cdom.'_'.$cnum;
9306: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
9307: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
9308: %commblocks = %{$blocksref};
9309: } else {
9310: %commblocks = &dump('comm_block',$cdom,$cnum);
9311: my $cachetime = 600;
9312: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
9313: }
9314: return %commblocks;
9315: }
9316:
9317: sub get_commblock_resources {
9318: my ($blocks) = @_;
9319: my %blockers = ();
9320: return %blockers unless ($env{'request.course.id'});
9321: my $courseurl = &courseid_to_courseurl($env{'request.course.id'});
9322: if ($env{'request.course.sec'}) {
9323: $courseurl .= '/'.$env{'request.course.sec'};
9324: }
9325: return %blockers if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseurl} =~/evb\&([^\:]*)/);
9326: my %commblocks;
9327: if (ref($blocks) eq 'HASH') {
9328: %commblocks = %{$blocks};
9329: } else {
9330: %commblocks = &get_comm_blocks();
9331: }
9332: return %blockers unless (keys(%commblocks) > 0);
9333: my $navmap = Apache::lonnavmaps::navmap->new();
9334: return %blockers unless (ref($navmap));
9335: my $now = time;
9336: foreach my $block (keys(%commblocks)) {
9337: if ($block =~ /^(\d+)____(\d+)$/) {
9338: my ($start,$end) = ($1,$2);
9339: if ($start <= $now && $end >= $now) {
9340: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
9341: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
9342: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
9343: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
9344: $blockers{$block}{maps} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
9345: }
9346: }
9347: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
9348: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
9349: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
9350: }
9351: }
9352: }
9353: }
9354: }
9355: } elsif ($block =~ /^firstaccess____(.+)$/) {
9356: my $item = $1;
9357: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
9358: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
9359: my (@interval,$mapname);
9360: my $type = 'map';
9361: if ($item eq 'course') {
9362: $type = 'course';
9363: @interval=&EXT("resource.0.interval");
9364: } else {
9365: if ($item =~ /___\d+___/) {
9366: $type = 'resource';
9367: @interval=&EXT("resource.0.interval",$item);
9368: } else {
9369: $mapname = &deversion($item);
9370: if (ref($navmap)) {
9371: my $timelimit = $navmap->get_mapparam(undef,$mapname,'0.interval');
9372: @interval = ($timelimit,'map');
9373: }
9374: }
9375: }
9376: if ($interval[0] =~ /^(\d+)/) {
9377: my $timelimit = $1;
9378: my $first_access;
9379: if ($type eq 'resource') {
9380: $first_access=&get_first_access($interval[1],$item);
9381: } elsif ($type eq 'map') {
9382: $first_access=&get_first_access($interval[1],undef,$item);
9383: } else {
9384: $first_access=&get_first_access($interval[1]);
9385: }
9386: if ($first_access) {
9387: my $timesup = $first_access+$timelimit;
9388: if ($timesup > $now) {
9389: my $activeblock;
9390: if ($type eq 'resource') {
9391: if (ref($navmap)) {
9392: my $res = $navmap->getBySymb($item);
9393: if ($res->answerable()) {
9394: $activeblock = 1;
9395: }
9396: }
9397: } elsif ($type eq 'map') {
9398: my $mapsymb = &symbread($mapname,1);
9399: if (($mapsymb) && (ref($navmap))) {
9400: my $mapres = $navmap->getBySymb($mapsymb);
9401: if (ref($mapres)) {
9402: my $first = $mapres->map_start();
9403: my $finish = $mapres->map_finish();
9404: my $it = $navmap->getIterator($first,$finish,undef,0,0);
9405: if (ref($it)) {
9406: my $res;
9407: while ($res = $it->next(undef,1)) {
9408: next unless (ref($res));
9409: my $symb = $res->symb();
9410: next if (($symb eq $mapsymb) || ($symb eq ''));
9411: @interval=&EXT("resource.0.interval",$symb);
9412: if ($interval[1] eq 'map') {
9413: if ($res->answerable()) {
9414: $activeblock = 1;
9415: last;
9416: }
9417: }
9418: }
9419: }
9420: }
9421: }
9422: }
9423: if ($activeblock) {
9424: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
9425: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
9426: $blockers{$block}{'maps'} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
9427: }
9428: }
9429: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
9430: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
9431: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
9432: }
9433: }
9434: }
9435: }
9436: }
9437: }
9438: }
9439: }
9440: }
9441: }
9442: return %blockers;
9443: }
9444:
9445: sub has_comm_blocking {
9446: my ($priv,$symb,$uri,$ignoresymbdb,$noenccheck,$blocked,$blocks) = @_;
9447: my @blockers;
9448: return unless ($env{'request.course.id'});
9449: return unless ($priv eq 'bre');
9450: return if ($env{'request.state'} eq 'construct');
9451: my $courseurl = &courseid_to_courseurl($env{'request.course.id'});
9452: if ($env{'request.course.sec'}) {
9453: $courseurl .= '/'.$env{'request.course.sec'};
9454: }
9455: return if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseurl} =~/evb\&([^\:]*)/);
9456: my %blockinfo;
9457: if (ref($blocks) eq 'HASH') {
9458: %blockinfo = &get_commblock_resources($blocks);
9459: } else {
9460: &load_all_blockers($env{'user.name'},$env{'user.domain'});
9461: %blockinfo = %cachedblockers;
9462: }
9463: return unless (keys(%blockinfo) > 0);
9464: my (%possibles,@symbs);
9465: if (!$symb) {
9466: $symb = &symbread($uri,1,1,1,\%possibles,$ignoresymbdb,$noenccheck);
9467: }
9468: if ($symb) {
9469: @symbs = ($symb);
9470: } elsif (keys(%possibles)) {
9471: @symbs = keys(%possibles);
9472: }
9473: my $noblock;
9474: foreach my $symb (@symbs) {
9475: last if ($noblock);
9476: my ($map,$resid,$resurl)=&decode_symb($symb);
9477: foreach my $block (keys(%blockinfo)) {
9478: if ($block =~ /^firstaccess____(.+)$/) {
9479: my $item = $1;
9480: unless ($blocked) {
9481: if (($item eq $map) || ($item eq $symb)) {
9482: $noblock = 1;
9483: last;
9484: }
9485: }
9486: }
9487: if (ref($blockinfo{$block}) eq 'HASH') {
9488: if (ref($blockinfo{$block}{'resources'}) eq 'HASH') {
9489: if ($blockinfo{$block}{'resources'}{$symb}) {
9490: unless (grep(/^\Q$block\E$/,@blockers)) {
9491: push(@blockers,$block);
9492: }
9493: }
9494: }
9495: if (ref($blockinfo{$block}{'maps'}) eq 'HASH') {
9496: if ($blockinfo{$block}{'maps'}{$map}) {
9497: unless (grep(/^\Q$block\E$/,@blockers)) {
9498: push(@blockers,$block);
9499: }
9500: }
9501: }
9502: }
9503: }
9504: }
9505: unless ($noblock) {
9506: return @blockers;
9507: }
9508: return;
9509: }
9510: }
9511:
9512: sub deeplink_check {
9513: my ($priv,$symb,$uri) = @_;
9514: return unless ($env{'request.course.id'});
9515: return unless ($priv eq 'bre');
9516: return if ($env{'request.state'} eq 'construct');
9517: return if ($env{'request.role.adv'});
9518: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
9519: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
9520: my (%possibles,@symbs);
9521: if (!$symb) {
9522: $symb = &symbread($uri,1,1,1,\%possibles);
9523: }
9524: if ($symb) {
9525: @symbs = ($symb);
9526: } elsif (keys(%possibles)) {
9527: @symbs = keys(%possibles);
9528: }
9529:
9530: my ($deeplink_symb,$allow);
9531: if ($env{'request.deeplink.login'}) {
9532: $deeplink_symb = &Apache::loncommon::deeplink_login_symb($cnum,$cdom);
9533: }
9534: foreach my $symb (@symbs) {
9535: last if ($allow);
9536: my $deeplink = &EXT("resource.0.deeplink",$symb);
9537: if ($deeplink eq '') {
9538: $allow = 1;
9539: } else {
9540: my ($state,$others,$listed,$scope,$protect) = split(/,/,$deeplink);
9541: if ($state ne 'only') {
9542: $allow = 1;
9543: } else {
9544: my $check_deeplink_entry;
9545: if ($protect ne 'none') {
9546: my ($acctype,$item) = split(/:/,$protect);
9547: if (($acctype eq 'ltic') && ($env{'user.linkprotector'})) {
9548: if (grep(/^\Q$item\Ec$/,split(/,/,$env{'user.linkprotector'}))) {
9549: $check_deeplink_entry = 1
9550: }
9551: } elsif (($acctype eq 'ltid') && ($env{'user.linkprotector'})) {
9552: if (grep(/^\Q$item\Ed$/,split(/,/,$env{'user.linkprotector'}))) {
9553: $check_deeplink_entry = 1;
9554: }
9555: } elsif (($acctype eq 'key') && ($env{'user.deeplinkkey'})) {
9556: if (grep(/^\Q$item\E$/,split(/,/,$env{'user.deeplinkkey'}))) {
9557: $check_deeplink_entry = 1;
9558: }
9559: }
9560: }
9561: if (($protect eq 'none') || ($check_deeplink_entry)) {
9562: if ($scope eq 'res') {
9563: if ($symb eq $deeplink_symb) {
9564: $allow = 1;
9565: }
9566: } elsif (($scope eq 'map') || ($scope eq 'rec')) {
9567: my ($map_from_symb,$map_from_login);
9568: $map_from_symb = &deversion((&decode_symb($symb))[0]);
9569: if ($deeplink_symb =~ /\.(page|sequence)$/) {
9570: $map_from_login = &deversion((&decode_symb($deeplink_symb))[2]);
9571: } else {
9572: $map_from_login = &deversion((&decode_symb($deeplink_symb))[0]);
9573: }
9574: if (($map_from_symb) && ($map_from_login)) {
9575: if ($map_from_symb eq $map_from_login) {
9576: $allow = 1;
9577: } elsif ($scope eq 'rec') {
9578: my @recurseup = &get_map_hierarchy($map_from_symb,$env{'request.course.id'});
9579: if (grep(/^\Q$map_from_login\E$/,@recurseup)) {
9580: $allow = 1;
9581: }
9582: }
9583: }
9584: }
9585: }
9586: }
9587: }
9588: }
9589: return if ($allow);
9590: return 1;
9591: }
9592:
9593: # -------------------------------- Deversion and split uri into path an filename
9594:
9595: #
9596: # Removes the version from a URI and
9597: # splits it in to its filename and path to the filename.
9598: # Seems like File::Basename could have done this more clearly.
9599: # Parameters:
9600: # $uri - input URI
9601: # Returns:
9602: # Two element list consisting of
9603: # $pathname - the URI up to and excluding the trailing /
9604: # $filename - The part of the URI following the last /
9605: # NOTE:
9606: # Another realization of this is simply:
9607: # use File::Basename;
9608: # ...
9609: # $uri = shift;
9610: # $filename = basename($uri);
9611: # $path = dirname($uri);
9612: # return ($filename, $path);
9613: #
9614: # The implementation below is probably faster however.
9615: #
9616: sub split_uri_for_cond {
9617: my $uri=&deversion(&declutter(shift));
9618: my @uriparts=split(/\//,$uri);
9619: my $filename=pop(@uriparts);
9620: my $pathname=join('/',@uriparts);
9621: return ($pathname,$filename);
9622: }
9623: # --------------------------------------------------- Is a resource on the map?
9624:
9625: sub is_on_map {
9626: my ($pathname,$filename) = &split_uri_for_cond(shift);
9627: #Trying to find the conditional for the file
9628: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
9629: /\&\Q$filename\E\:([\d\|]+)\&/);
9630: if ($match) {
9631: return (1,$1);
9632: } else {
9633: return (0,0);
9634: }
9635: }
9636:
9637: # --------------------------------------------------------- Get symb from alias
9638:
9639: sub get_symb_from_alias {
9640: my $symb=shift;
9641: my ($map,$resid,$url)=&decode_symb($symb);
9642: # Already is a symb
9643: if ($url) { return $symb; }
9644: # Must be an alias
9645: my $aliassymb='';
9646: my %bighash;
9647: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9648: &GDBM_READER(),0640)) {
9649: my $rid=$bighash{'mapalias_'.$symb};
9650: if ($rid) {
9651: my ($mapid,$resid)=split(/\./,$rid);
9652: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
9653: $resid,$bighash{'src_'.$rid});
9654: }
9655: untie %bighash;
9656: }
9657: return $aliassymb;
9658: }
9659:
9660: # ----------------------------------------------------------------- Define Role
9661:
9662: sub definerole {
9663: if (allowed('mcr','/')) {
9664: my ($rolename,$sysrole,$domrole,$courole,$uname,$udom)=@_;
9665: foreach my $role (split(':',$sysrole)) {
9666: my ($crole,$cqual)=split(/\&/,$role);
9667: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
9668: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
9669: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
9670: return "refused:s:$crole&$cqual";
9671: }
9672: }
9673: }
9674: foreach my $role (split(':',$domrole)) {
9675: my ($crole,$cqual)=split(/\&/,$role);
9676: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
9677: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
9678: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
9679: return "refused:d:$crole&$cqual";
9680: }
9681: }
9682: }
9683: foreach my $role (split(':',$courole)) {
9684: my ($crole,$cqual)=split(/\&/,$role);
9685: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
9686: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
9687: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
9688: return "refused:c:$crole&$cqual";
9689: }
9690: }
9691: }
9692: my $uhome;
9693: if (($uname ne '') && ($udom ne '')) {
9694: $uhome = &homeserver($uname,$udom);
9695: return $uhome if ($uhome eq 'no_host');
9696: } else {
9697: $uname = $env{'user.name'};
9698: $udom = $env{'user.domain'};
9699: $uhome = $env{'user.home'};
9700: }
9701: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
9702: "$udom:$uname:rolesdef_$rolename=".
9703: escape($sysrole.'_'.$domrole.'_'.$courole);
9704: return reply($command,$uhome);
9705: } else {
9706: return 'refused';
9707: }
9708: }
9709:
9710: # ---------------- Make a metadata query against the network of library servers
9711:
9712: sub metadata_query {
9713: my ($query,$custom,$customshow,$server_array,$domains_hash)=@_;
9714: my %rhash;
9715: my %libserv = &all_library();
9716: my @server_list = (defined($server_array) ? @$server_array
9717: : keys(%libserv) );
9718: for my $server (@server_list) {
9719: my $domains = '';
9720: if (ref($domains_hash) eq 'HASH') {
9721: $domains = $domains_hash->{$server};
9722: }
9723: unless ($custom or $customshow) {
9724: my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server);
9725: $rhash{$server}=$reply;
9726: }
9727: else {
9728: my $reply=&reply("querysend:".&escape($query).':'.
9729: &escape($custom).':'.&escape($customshow).':'.&escape($domains),
9730: $server);
9731: $rhash{$server}=$reply;
9732: }
9733: }
9734: return \%rhash;
9735: }
9736:
9737: # ----------------------------------------- Send log queries and wait for reply
9738:
9739: sub log_query {
9740: my ($uname,$udom,$query,%filters)=@_;
9741: my $uhome=&homeserver($uname,$udom);
9742: if ($uhome eq 'no_host') { return 'error: no_host'; }
9743: my $uhost=&hostname($uhome);
9744: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
9745: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
9746: $uhome);
9747: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
9748: return get_query_reply($queryid);
9749: }
9750:
9751: # -------------------------- Update MySQL table for portfolio file
9752:
9753: sub update_portfolio_table {
9754: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
9755: if ($group ne '') {
9756: $file_name =~s /^\Q$group\E//;
9757: }
9758: my $homeserver = &homeserver($uname,$udom);
9759: my $queryid=
9760: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
9761: ':'.&escape($file_name).':'.$action,$homeserver);
9762: my $reply = &get_query_reply($queryid);
9763: return $reply;
9764: }
9765:
9766: # -------------------------- Update MySQL allusers table
9767:
9768: sub update_allusers_table {
9769: my ($uname,$udom,$names) = @_;
9770: my $homeserver = &homeserver($uname,$udom);
9771: my $queryid=
9772: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
9773: 'lastname='.&escape($names->{'lastname'}).'%%'.
9774: 'firstname='.&escape($names->{'firstname'}).'%%'.
9775: 'middlename='.&escape($names->{'middlename'}).'%%'.
9776: 'generation='.&escape($names->{'generation'}).'%%'.
9777: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
9778: 'id='.&escape($names->{'id'}),$homeserver);
9779: return;
9780: }
9781:
9782: # ------- Request retrieval of institutional classlists for course(s)
9783:
9784: sub fetch_enrollment_query {
9785: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
9786: my ($homeserver,$sleep,$loopmax);
9787: my $maxtries = 1;
9788: if ($context eq 'automated') {
9789: $homeserver = $perlvar{'lonHostID'};
9790: $sleep = 2;
9791: $loopmax = 100;
9792: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
9793: } else {
9794: $homeserver = &homeserver($cnum,$dom);
9795: }
9796: my $host=&hostname($homeserver);
9797: my $cmd = '';
9798: foreach my $affiliate (keys(%{$affiliatesref})) {
9799: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
9800: }
9801: $cmd =~ s/%%$//;
9802: $cmd = &escape($cmd);
9803: my $query = 'fetchenrollment';
9804: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
9805: unless ($queryid=~/^\Q$host\E\_/) {
9806: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
9807: return 'error: '.$queryid;
9808: }
9809: my $reply = &get_query_reply($queryid,$sleep,$loopmax);
9810: my $tries = 1;
9811: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
9812: $reply = &get_query_reply($queryid,$sleep,$loopmax);
9813: $tries ++;
9814: }
9815: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
9816: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
9817: } else {
9818: my @responses = split(/:/,$reply);
9819: if (grep { $_ eq $homeserver } ¤t_machine_ids()) {
9820: foreach my $line (@responses) {
9821: my ($key,$value) = split(/=/,$line,2);
9822: $$replyref{$key} = $value;
9823: }
9824: } else {
9825: my $pathname = LONCAPA::tempdir();
9826: foreach my $line (@responses) {
9827: my ($key,$value) = split(/=/,$line);
9828: $$replyref{$key} = $value;
9829: if ($value > 0) {
9830: foreach my $item (@{$$affiliatesref{$key}}) {
9831: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
9832: my $destname = $pathname.'/'.$filename;
9833: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
9834: if ($xml_classlist =~ /^error/) {
9835: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
9836: } else {
9837: if ( open(FILE,">",$destname) ) {
9838: print FILE &unescape($xml_classlist);
9839: close(FILE);
9840: } else {
9841: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
9842: }
9843: }
9844: }
9845: }
9846: }
9847: }
9848: return 'ok';
9849: }
9850: return 'error';
9851: }
9852:
9853: sub get_query_reply {
9854: my ($queryid,$sleep,$loopmax) = @_;
9855: if (($sleep eq '') || ($sleep !~ /^\d+\.?\d*$/)) {
9856: $sleep = 0.2;
9857: }
9858: if (($loopmax eq '') || ($loopmax =~ /\D/)) {
9859: $loopmax = 100;
9860: }
9861: my $replyfile=LONCAPA::tempdir().$queryid;
9862: my $reply='';
9863: for (1..$loopmax) {
9864: sleep($sleep);
9865: if (-e $replyfile.'.end') {
9866: if (open(my $fh,"<",$replyfile)) {
9867: $reply = join('',<$fh>);
9868: close($fh);
9869: } else { return 'error: reply_file_error'; }
9870: return &unescape($reply);
9871: }
9872: }
9873: return 'timeout:'.$queryid;
9874: }
9875:
9876: sub courselog_query {
9877: #
9878: # possible filters:
9879: # url: url or symb
9880: # username
9881: # domain
9882: # action: view, submit, grade
9883: # start: timestamp
9884: # end: timestamp
9885: #
9886: my (%filters)=@_;
9887: unless ($env{'request.course.id'}) { return 'no_course'; }
9888: if ($filters{'url'}) {
9889: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
9890: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
9891: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
9892: }
9893: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
9894: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
9895: return &log_query($cname,$cdom,'courselog',%filters);
9896: }
9897:
9898: sub userlog_query {
9899: #
9900: # possible filters:
9901: # action: log check role
9902: # start: timestamp
9903: # end: timestamp
9904: #
9905: my ($uname,$udom,%filters)=@_;
9906: return &log_query($uname,$udom,'userlog',%filters);
9907: }
9908:
9909: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
9910:
9911: sub auto_run {
9912: my ($cnum,$cdom) = @_;
9913: my $response = 0;
9914: my $settings;
9915: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
9916: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
9917: $settings = $domconfig{'autoenroll'};
9918: if ($settings->{'run'} eq '1') {
9919: $response = 1;
9920: }
9921: } else {
9922: my $homeserver;
9923: if (&is_course($cdom,$cnum)) {
9924: $homeserver = &homeserver($cnum,$cdom);
9925: } else {
9926: $homeserver = &domain($cdom,'primary');
9927: }
9928: if ($homeserver ne 'no_host') {
9929: $response = &reply('autorun:'.$cdom,$homeserver);
9930: }
9931: }
9932: return $response;
9933: }
9934:
9935: sub auto_get_sections {
9936: my ($cnum,$cdom,$inst_coursecode) = @_;
9937: my $homeserver;
9938: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9939: $homeserver = &homeserver($cnum,$cdom);
9940: }
9941: if (!defined($homeserver)) {
9942: if ($cdom =~ /^$match_domain$/) {
9943: $homeserver = &domain($cdom,'primary');
9944: }
9945: }
9946: my @secs;
9947: if (defined($homeserver)) {
9948: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
9949: unless ($response eq 'refused') {
9950: @secs = split(/:/,$response);
9951: }
9952: }
9953: return @secs;
9954: }
9955:
9956: sub auto_new_course {
9957: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
9958: my $homeserver = &homeserver($cnum,$cdom);
9959: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
9960: return $response;
9961: }
9962:
9963: sub auto_validate_courseID {
9964: my ($cnum,$cdom,$inst_course_id) = @_;
9965: my $homeserver = &homeserver($cnum,$cdom);
9966: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
9967: return $response;
9968: }
9969:
9970: sub auto_validate_instcode {
9971: my ($cnum,$cdom,$instcode,$owner) = @_;
9972: my ($homeserver,$response);
9973: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9974: $homeserver = &homeserver($cnum,$cdom);
9975: }
9976: if (!defined($homeserver)) {
9977: if ($cdom =~ /^$match_domain$/) {
9978: $homeserver = &domain($cdom,'primary');
9979: }
9980: }
9981: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
9982: &escape($instcode).':'.&escape($owner),$homeserver));
9983: my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
9984: return ($outcome,$description,$defaultcredits);
9985: }
9986:
9987: sub auto_validate_inst_crosslist {
9988: my ($cnum,$cdom,$instcode,$inst_xlist,$coowner) = @_;
9989: my ($homeserver,$response);
9990: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9991: $homeserver = &homeserver($cnum,$cdom);
9992: }
9993: if (!defined($homeserver)) {
9994: if ($cdom =~ /^$match_domain$/) {
9995: $homeserver = &domain($cdom,'primary');
9996: }
9997: }
9998: unless (($homeserver eq '') || ($homeserver eq 'no_host')) {
9999: $response=&reply('autovalidateinstcrosslist:'.$cdom.':'.
10000: &escape($instcode).':'.&escape($inst_xlist).':'.
10001: &escape($coowner),$homeserver);
10002: }
10003: return $response;
10004: }
10005:
10006: sub auto_create_password {
10007: my ($cnum,$cdom,$authparam,$udom) = @_;
10008: my ($homeserver,$response);
10009: my $create_passwd = 0;
10010: my $authchk = '';
10011: if ($udom =~ /^$match_domain$/) {
10012: $homeserver = &domain($udom,'primary');
10013: }
10014: if ($homeserver eq '') {
10015: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
10016: $homeserver = &homeserver($cnum,$cdom);
10017: }
10018: }
10019: if ($homeserver eq '') {
10020: $authchk = 'nodomain';
10021: } else {
10022: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
10023: if ($response eq 'refused') {
10024: $authchk = 'refused';
10025: } else {
10026: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
10027: }
10028: }
10029: return ($authparam,$create_passwd,$authchk);
10030: }
10031:
10032: sub auto_photo_permission {
10033: my ($cnum,$cdom,$students) = @_;
10034: my $homeserver = &homeserver($cnum,$cdom);
10035: my ($outcome,$perm_reqd,$conditions) =
10036: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
10037: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
10038: return (undef,undef);
10039: }
10040: return ($outcome,$perm_reqd,$conditions);
10041: }
10042:
10043: sub auto_checkphotos {
10044: my ($uname,$udom,$pid) = @_;
10045: my $homeserver = &homeserver($uname,$udom);
10046: my ($result,$resulttype);
10047: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
10048: &escape($uname).':'.&escape($pid),
10049: $homeserver));
10050: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
10051: return (undef,undef);
10052: }
10053: if ($outcome) {
10054: ($result,$resulttype) = split(/:/,$outcome);
10055: }
10056: return ($result,$resulttype);
10057: }
10058:
10059: sub auto_photochoice {
10060: my ($cnum,$cdom) = @_;
10061: my $homeserver = &homeserver($cnum,$cdom);
10062: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
10063: &escape($cdom),
10064: $homeserver)));
10065: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
10066: return (undef,undef);
10067: }
10068: return ($update,$comment);
10069: }
10070:
10071: sub auto_photoupdate {
10072: my ($affiliatesref,$dom,$cnum,$photo) = @_;
10073: my $homeserver = &homeserver($cnum,$dom);
10074: my $host=&hostname($homeserver);
10075: my $cmd = '';
10076: my $maxtries = 1;
10077: foreach my $affiliate (keys(%{$affiliatesref})) {
10078: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
10079: }
10080: $cmd =~ s/%%$//;
10081: $cmd = &escape($cmd);
10082: my $query = 'institutionalphotos';
10083: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
10084: unless ($queryid=~/^\Q$host\E\_/) {
10085: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
10086: return 'error: '.$queryid;
10087: }
10088: my $reply = &get_query_reply($queryid);
10089: my $tries = 1;
10090: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
10091: $reply = &get_query_reply($queryid);
10092: $tries ++;
10093: }
10094: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
10095: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
10096: } else {
10097: my @responses = split(/:/,$reply);
10098: my $outcome = shift(@responses);
10099: foreach my $item (@responses) {
10100: my ($key,$value) = split(/=/,$item);
10101: $$photo{$key} = $value;
10102: }
10103: return $outcome;
10104: }
10105: return 'error';
10106: }
10107:
10108: sub auto_instcode_format {
10109: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
10110: $cat_order) = @_;
10111: my $courses = '';
10112: my @homeservers;
10113: if ($caller eq 'global') {
10114: my %servers = &get_servers($codedom,'library');
10115: foreach my $tryserver (keys(%servers)) {
10116: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
10117: push(@homeservers,$tryserver);
10118: }
10119: }
10120: } elsif ($caller eq 'requests') {
10121: if ($codedom =~ /^$match_domain$/) {
10122: my $chome = &domain($codedom,'primary');
10123: unless ($chome eq 'no_host') {
10124: push(@homeservers,$chome);
10125: }
10126: }
10127: } else {
10128: push(@homeservers,&homeserver($caller,$codedom));
10129: }
10130: foreach my $code (keys(%{$instcodes})) {
10131: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
10132: }
10133: chop($courses);
10134: my $ok_response = 0;
10135: my $response;
10136: while (@homeservers > 0 && $ok_response == 0) {
10137: my $server = shift(@homeservers);
10138: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
10139: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
10140: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
10141: split(/:/,$response);
10142: %{$codes} = (%{$codes},&str2hash($codes_str));
10143: push(@{$codetitles},&str2array($codetitles_str));
10144: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
10145: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
10146: $ok_response = 1;
10147: }
10148: }
10149: if ($ok_response) {
10150: return 'ok';
10151: } else {
10152: return $response;
10153: }
10154: }
10155:
10156: sub auto_instcode_defaults {
10157: my ($domain,$returnhash,$code_order) = @_;
10158: my @homeservers;
10159:
10160: my %servers = &get_servers($domain,'library');
10161: foreach my $tryserver (keys(%servers)) {
10162: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
10163: push(@homeservers,$tryserver);
10164: }
10165: }
10166:
10167: my $response;
10168: foreach my $server (@homeservers) {
10169: $response=&reply('autoinstcodedefaults:'.$domain,$server);
10170: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
10171:
10172: foreach my $pair (split(/\&/,$response)) {
10173: my ($name,$value)=split(/\=/,$pair);
10174: if ($name eq 'code_order') {
10175: @{$code_order} = split(/\&/,&unescape($value));
10176: } else {
10177: $returnhash->{&unescape($name)}=&unescape($value);
10178: }
10179: }
10180: return 'ok';
10181: }
10182:
10183: return $response;
10184: }
10185:
10186: sub auto_possible_instcodes {
10187: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
10188: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
10189: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
10190: return;
10191: }
10192: my (@homeservers,$uhome);
10193: if (defined(&domain($domain,'primary'))) {
10194: $uhome=&domain($domain,'primary');
10195: push(@homeservers,&domain($domain,'primary'));
10196: } else {
10197: my %servers = &get_servers($domain,'library');
10198: foreach my $tryserver (keys(%servers)) {
10199: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
10200: push(@homeservers,$tryserver);
10201: }
10202: }
10203: }
10204: my $response;
10205: foreach my $server (@homeservers) {
10206: $response=&reply('autopossibleinstcodes:'.$domain,$server);
10207: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
10208: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
10209: split(':',$response);
10210: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
10211: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
10212: foreach my $item (split('&',$cat_title)) {
10213: my ($name,$value)=split('=',$item);
10214: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
10215: }
10216: foreach my $item (split('&',$cat_order)) {
10217: my ($name,$value)=split('=',$item);
10218: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
10219: }
10220: return 'ok';
10221: }
10222: return $response;
10223: }
10224:
10225: sub auto_courserequest_checks {
10226: my ($dom) = @_;
10227: my ($homeserver,%validations);
10228: if ($dom =~ /^$match_domain$/) {
10229: $homeserver = &domain($dom,'primary');
10230: }
10231: unless ($homeserver eq 'no_host') {
10232: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
10233: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
10234: my @items = split(/&/,$response);
10235: foreach my $item (@items) {
10236: my ($key,$value) = split('=',$item);
10237: $validations{&unescape($key)} = &thaw_unescape($value);
10238: }
10239: }
10240: }
10241: return %validations;
10242: }
10243:
10244: sub auto_courserequest_validation {
10245: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$custominfo) = @_;
10246: my ($homeserver,$response);
10247: if ($dom =~ /^$match_domain$/) {
10248: $homeserver = &domain($dom,'primary');
10249: }
10250: unless ($homeserver eq 'no_host') {
10251: my $customdata;
10252: if (ref($custominfo) eq 'HASH') {
10253: $customdata = &freeze_escape($custominfo);
10254: }
10255: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
10256: ':'.&escape($crstype).':'.&escape($inststatuslist).
10257: ':'.&escape($instcode).':'.&escape($instseclist).':'.
10258: $customdata,$homeserver));
10259: }
10260: return $response;
10261: }
10262:
10263: sub auto_validate_class_sec {
10264: my ($cdom,$cnum,$owners,$inst_class) = @_;
10265: my $homeserver = &homeserver($cnum,$cdom);
10266: my $ownerlist;
10267: if (ref($owners) eq 'ARRAY') {
10268: $ownerlist = join(',',@{$owners});
10269: } else {
10270: $ownerlist = $owners;
10271: }
10272: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
10273: &escape($ownerlist).':'.$cdom,$homeserver);
10274: return $response;
10275: }
10276:
10277: sub auto_instsec_reformat {
10278: my ($cdom,$action,$instsecref) = @_;
10279: return unless(($action eq 'clutter') || ($action eq 'declutter'));
10280: my @homeservers;
10281: if (defined(&domain($cdom,'primary'))) {
10282: push(@homeservers,&domain($cdom,'primary'));
10283: } else {
10284: my %servers = &get_servers($cdom,'library');
10285: foreach my $tryserver (keys(%servers)) {
10286: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
10287: push(@homeservers,$tryserver);
10288: }
10289: }
10290: }
10291: my $response;
10292: my %reformatted = %{$instsecref};
10293: foreach my $server (@homeservers) {
10294: if (ref($instsecref) eq 'HASH') {
10295: my $info = &freeze_escape($instsecref);
10296: my $response=&reply('autoinstsecreformat:'.$cdom.':'.
10297: $action.':'.$info,$server);
10298: next if ($response =~ /(con_lost|error|no_such_host|refused|unknown_command)/);
10299: my @items = split(/&/,$response);
10300: foreach my $item (@items) {
10301: my ($key,$value) = split(/=/,$item);
10302: $reformatted{&unescape($key)} = &thaw_unescape($value);
10303: }
10304: }
10305: }
10306: return %reformatted;
10307: }
10308:
10309: sub auto_validate_instclasses {
10310: my ($cdom,$cnum,$owners,$classesref) = @_;
10311: my ($homeserver,%validations);
10312: $homeserver = &homeserver($cnum,$cdom);
10313: unless ($homeserver eq 'no_host') {
10314: my $ownerlist;
10315: if (ref($owners) eq 'ARRAY') {
10316: $ownerlist = join(',',@{$owners});
10317: } else {
10318: $ownerlist = $owners;
10319: }
10320: if (ref($classesref) eq 'HASH') {
10321: my $classes = &freeze_escape($classesref);
10322: my $response=&reply('autovalidateinstclasses:'.&escape($ownerlist).
10323: ':'.$cdom.':'.$classes,$homeserver);
10324: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
10325: my @items = split(/&/,$response);
10326: foreach my $item (@items) {
10327: my ($key,$value) = split('=',$item);
10328: $validations{&unescape($key)} = &thaw_unescape($value);
10329: }
10330: }
10331: }
10332: }
10333: return %validations;
10334: }
10335:
10336: sub auto_crsreq_update {
10337: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,
10338: $code,$accessstart,$accessend,$inbound) = @_;
10339: my ($homeserver,%crsreqresponse);
10340: if ($cdom =~ /^$match_domain$/) {
10341: $homeserver = &domain($cdom,'primary');
10342: }
10343: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
10344: my $info;
10345: if (ref($inbound) eq 'HASH') {
10346: $info = &freeze_escape($inbound);
10347: }
10348: my $response=&reply('autocrsrequpdate:'.$cdom.':'.$cnum.':'.&escape($crstype).
10349: ':'.&escape($action).':'.&escape($ownername).':'.
10350: &escape($ownerdomain).':'.&escape($fullname).':'.
10351: &escape($title).':'.&escape($code).':'.
10352: &escape($accessstart).':'.&escape($accessend).':'.$info,
10353: $homeserver);
10354: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
10355: my @items = split(/&/,$response);
10356: foreach my $item (@items) {
10357: my ($key,$value) = split('=',$item);
10358: $crsreqresponse{&unescape($key)} = &thaw_unescape($value);
10359: }
10360: }
10361: }
10362: return \%crsreqresponse;
10363: }
10364:
10365: sub auto_export_grades {
10366: my ($cdom,$cnum,$inforef,$gradesref) = @_;
10367: my ($homeserver,%exportresponse);
10368: if ($cdom =~ /^$match_domain$/) {
10369: $homeserver = &domain($cdom,'primary');
10370: }
10371: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
10372: my $info;
10373: if (ref($inforef) eq 'HASH') {
10374: $info = &freeze_escape($inforef);
10375: }
10376: if (ref($gradesref) eq 'HASH') {
10377: my $grades = &freeze_escape($gradesref);
10378: my $response=&reply('encrypt:autoexportgrades:'.$cdom.':'.$cnum.':'.
10379: $info.':'.$grades,$homeserver);
10380: unless ($response =~ /(con_lost|error|no_such_host|refused|unknown_command)/) {
10381: my @items = split(/&/,$response);
10382: foreach my $item (@items) {
10383: my ($key,$value) = split('=',$item);
10384: $exportresponse{&unescape($key)} = &thaw_unescape($value);
10385: }
10386: }
10387: }
10388: }
10389: return \%exportresponse;
10390: }
10391:
10392: sub check_instcode_cloning {
10393: my ($codedefaults,$code_order,$cloner,$clonefromcode,$clonetocode) = @_;
10394: unless ((ref($codedefaults) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
10395: return;
10396: }
10397: my $canclone;
10398: if (@{$code_order} > 0) {
10399: my $instcoderegexp ='^';
10400: my @clonecodes = split(/\&/,$cloner);
10401: foreach my $item (@{$code_order}) {
10402: if (grep(/^\Q$item\E=/,@clonecodes)) {
10403: foreach my $pair (@clonecodes) {
10404: my ($key,$val) = split(/\=/,$pair,2);
10405: $val = &unescape($val);
10406: if ($key eq $item) {
10407: $instcoderegexp .= '('.$val.')';
10408: last;
10409: }
10410: }
10411: } else {
10412: $instcoderegexp .= $codedefaults->{$item};
10413: }
10414: }
10415: $instcoderegexp .= '$';
10416: my (@from,@to);
10417: eval {
10418: (@from) = ($clonefromcode =~ /$instcoderegexp/);
10419: (@to) = ($clonetocode =~ /$instcoderegexp/);
10420: };
10421: if ((@from > 0) && (@to > 0)) {
10422: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
10423: if (!@diffs) {
10424: $canclone = 1;
10425: }
10426: }
10427: }
10428: return $canclone;
10429: }
10430:
10431: sub default_instcode_cloning {
10432: my ($clonedom,$domdefclone,$clonefromcode,$clonetocode,$codedefaultsref,$codeorderref) = @_;
10433: my (%codedefaults,@code_order,$canclone);
10434: if ((ref($codedefaultsref) eq 'HASH') && (ref($codeorderref) eq 'ARRAY')) {
10435: %codedefaults = %{$codedefaultsref};
10436: @code_order = @{$codeorderref};
10437: } elsif ($clonedom) {
10438: &auto_instcode_defaults($clonedom,\%codedefaults,\@code_order);
10439: }
10440: if (($domdefclone) && (@code_order)) {
10441: my @clonecodes = split(/\+/,$domdefclone);
10442: my $instcoderegexp ='^';
10443: foreach my $item (@code_order) {
10444: if (grep(/^\Q$item\E$/,@clonecodes)) {
10445: $instcoderegexp .= '('.$codedefaults{$item}.')';
10446: } else {
10447: $instcoderegexp .= $codedefaults{$item};
10448: }
10449: }
10450: $instcoderegexp .= '$';
10451: my (@from,@to);
10452: eval {
10453: (@from) = ($clonefromcode =~ /$instcoderegexp/);
10454: (@to) = ($clonetocode =~ /$instcoderegexp/);
10455: };
10456: if ((@from > 0) && (@to > 0)) {
10457: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
10458: if (!@diffs) {
10459: $canclone = 1;
10460: }
10461: }
10462: }
10463: return $canclone;
10464: }
10465:
10466: # ------------------------------------------------------- Course Group routines
10467:
10468: sub get_coursegroups {
10469: my ($cdom,$cnum,$group,$namespace) = @_;
10470: return(&dump($namespace,$cdom,$cnum,$group));
10471: }
10472:
10473: sub modify_coursegroup {
10474: my ($cdom,$cnum,$groupsettings) = @_;
10475: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
10476: }
10477:
10478: sub toggle_coursegroup_status {
10479: my ($cdom,$cnum,$group,$action) = @_;
10480: my ($from_namespace,$to_namespace);
10481: if ($action eq 'delete') {
10482: $from_namespace = 'coursegroups';
10483: $to_namespace = 'deleted_groups';
10484: } else {
10485: $from_namespace = 'deleted_groups';
10486: $to_namespace = 'coursegroups';
10487: }
10488: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
10489: if (my $tmp = &error(%curr_group)) {
10490: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
10491: return ('read error',$tmp);
10492: } else {
10493: my %savedsettings = %curr_group;
10494: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
10495: my $deloutcome;
10496: if ($result eq 'ok') {
10497: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
10498: } else {
10499: return ('write error',$result);
10500: }
10501: if ($deloutcome eq 'ok') {
10502: return 'ok';
10503: } else {
10504: return ('delete error',$deloutcome);
10505: }
10506: }
10507: }
10508:
10509: sub modify_group_roles {
10510: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context,
10511: $othdomby,$requester) = @_;
10512: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
10513: my $role = 'gr/'.&escape($userprivs);
10514: my ($uname,$udom) = split(/:/,$user);
10515: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context,
10516: $othdomby,$requester);
10517: if ($result eq 'ok') {
10518: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
10519: }
10520: return $result;
10521: }
10522:
10523: sub modify_coursegroup_membership {
10524: my ($cdom,$cnum,$membership) = @_;
10525: my $result = &put('groupmembership',$membership,$cdom,$cnum);
10526: return $result;
10527: }
10528:
10529: sub get_active_groups {
10530: my ($udom,$uname,$cdom,$cnum) = @_;
10531: my $now = time;
10532: my %groups = ();
10533: foreach my $key (keys(%env)) {
10534: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
10535: my ($start,$end) = split(/\./,$env{$key});
10536: if (($end!=0) && ($end<$now)) { next; }
10537: if (($start!=0) && ($start>$now)) { next; }
10538: if ($1 eq $cdom && $2 eq $cnum) {
10539: $groups{$3} = $env{$key} ;
10540: }
10541: }
10542: }
10543: return %groups;
10544: }
10545:
10546: sub get_group_membership {
10547: my ($cdom,$cnum,$group) = @_;
10548: return(&dump('groupmembership',$cdom,$cnum,$group));
10549: }
10550:
10551: sub get_users_groups {
10552: my ($udom,$uname,$courseid) = @_;
10553: my @usersgroups;
10554: my $cachetime=1800;
10555:
10556: my $hashid="$udom:$uname:$courseid";
10557: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
10558: if (defined($cached)) {
10559: @usersgroups = split(/:/,$grouplist);
10560: } else {
10561: $grouplist = '';
10562: my $courseurl = &courseid_to_courseurl($courseid);
10563: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
10564: my $access_end = $env{'course.'.$courseid.
10565: '.default_enrollment_end_date'};
10566: my $now = time;
10567: foreach my $key (keys(%roleshash)) {
10568: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
10569: my $group = $1;
10570: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
10571: my $start = $2;
10572: my $end = $1;
10573: if ($start == -1) { next; } # deleted from group
10574: if (($start!=0) && ($start>$now)) { next; }
10575: if (($end!=0) && ($end<$now)) {
10576: if ($access_end && $access_end < $now) {
10577: if ($access_end - $end < 86400) {
10578: push(@usersgroups,$group);
10579: }
10580: }
10581: next;
10582: }
10583: push(@usersgroups,$group);
10584: }
10585: }
10586: }
10587: @usersgroups = &sort_course_groups($courseid,@usersgroups);
10588: $grouplist = join(':',@usersgroups);
10589: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
10590: }
10591: return @usersgroups;
10592: }
10593:
10594: sub devalidate_getgroups_cache {
10595: my ($udom,$uname,$cdom,$cnum)=@_;
10596: my $courseid = $cdom.'_'.$cnum;
10597:
10598: my $hashid="$udom:$uname:$courseid";
10599: &devalidate_cache_new('getgroups',$hashid);
10600: }
10601:
10602: # ------------------------------------------------------------------ Plain Text
10603:
10604: sub plaintext {
10605: my ($short,$type,$cid,$forcedefault) = @_;
10606: if ($short =~ m{^cr/}) {
10607: return (split('/',$short))[-1];
10608: }
10609: if (!defined($cid)) {
10610: $cid = $env{'request.course.id'};
10611: }
10612: my %rolenames = (
10613: Course => 'std',
10614: Community => 'alt1',
10615: Placement => 'std',
10616: );
10617: if ($cid ne '') {
10618: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
10619: unless ($forcedefault) {
10620: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
10621: &Apache::lonlocal::mt_escape(\$roletext);
10622: return &Apache::lonlocal::mt($roletext);
10623: }
10624: }
10625: }
10626: if ((defined($type)) && (defined($rolenames{$type})) &&
10627: (defined($rolenames{$type})) &&
10628: (defined($prp{$short}{$rolenames{$type}}))) {
10629: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
10630: } elsif ($cid ne '') {
10631: my $crstype = $env{'course.'.$cid.'.type'};
10632: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
10633: (defined($prp{$short}{$rolenames{$crstype}}))) {
10634: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
10635: }
10636: }
10637: return &Apache::lonlocal::mt($prp{$short}{'std'});
10638: }
10639:
10640: # ----------------------------------------------------------------- Assign Role
10641:
10642: sub assignrole {
10643: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
10644: $context,$othdomby,$requester,$reqsec,$reqrole)=@_;
10645: my ($mrole,$rolelogcontext);
10646: if ($role =~ /^cr\//) {
10647: my $cwosec=$url;
10648: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
10649: if ((!&allowed('ccr',$cwosec)) && (!&allowed('ccr',$udom))) {
10650: my $refused = 1;
10651: if ($context eq 'requestcourses') {
10652: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
10653: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
10654: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
10655: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
10656: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
10657: if ($crsenv{'internal.courseowner'} eq
10658: $env{'user.name'}.':'.$env{'user.domain'}) {
10659: $refused = '';
10660: }
10661: }
10662: }
10663: }
10664: } elsif (($context eq 'course') && ($othdomby eq 'othdombyuser')) {
10665: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
10666: my ($sec) = ($url =~ m{^/\Q$cwosec\E/(.*)$});
10667: my $key = "$uname:$udom:$role:$sec";
10668: my %queuedrolereq = &Apache::lonnet::get('nohist_othdomqueued',[$key],$cdom,$cnum);
10669: if ((exists($queuedrolereq{$key})) && (ref($queuedrolereq{$key}) eq 'HASH')) {
10670: if (($queuedrolereq{$key}{'adj'} eq 'user') && ($queuedrolereq{$key}{'requester'} eq $requester)) {
10671: $refused = '';
10672: }
10673: }
10674: }
10675: if ($refused) {
10676: &logthis('Refused custom assignrole: '.
10677: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
10678: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
10679: return 'refused';
10680: }
10681: }
10682: $mrole='cr';
10683: } elsif ($role =~ /^gr\//) {
10684: my $cwogrp=$url;
10685: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
10686: if (!&allowed('mdg',$cwogrp)) {
10687: my $refused = 1;
10688: if (($refused) && ($othdomby eq 'othdombyuser') && ($requester ne '') && ($reqrole ne '')) {
10689: my ($cdom,$cnum) = ($cwogrp =~ m{^/?($match_domain)/($match_courseid)$});
10690: my $key = "$uname:$udom:$reqrole:$reqsec";
10691: my %queuedrolereq = &Apache::lonnet::get('nohist_othdomqueued',[$key],$cdom,$cnum);
10692: if ((exists($queuedrolereq{$key})) && (ref($queuedrolereq{$key}) eq 'HASH')) {
10693: if (($queuedrolereq{$key}{'adj'} eq 'user') && ($queuedrolereq{$key}{'requester'} eq $requester)) {
10694: $refused = '';
10695: }
10696: }
10697: }
10698: if ($refused) {
10699: &logthis('Refused group assignrole: '.
10700: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
10701: $env{'user.name'}.' at '.$env{'user.domain'});
10702: return 'refused';
10703: }
10704: }
10705: $mrole='gr';
10706: } else {
10707: my $cwosec=$url;
10708: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
10709: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
10710: my $refused;
10711: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
10712: if (!(&allowed('c'.$role,$url))) {
10713: $refused = 1;
10714: }
10715: } else {
10716: $refused = 1;
10717: }
10718: if ($refused) {
10719: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
10720: if (!$selfenroll && ($othdomby ne 'othdombyuser') &&
10721: (($context eq 'course') || ($context eq 'ltienroll' && $env{'request.lti.login'}))) {
10722: my %crsenv;
10723: if ($role eq 'cc' || $role eq 'co') {
10724: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
10725: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
10726: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
10727: if ($crsenv{'internal.courseowner'} eq
10728: $env{'user.name'}.':'.$env{'user.domain'}) {
10729: $refused = '';
10730: }
10731: }
10732: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
10733: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
10734: if ($crsenv{'internal.courseowner'} eq
10735: $env{'user.name'}.':'.$env{'user.domain'}) {
10736: $refused = '';
10737: }
10738: }
10739: }
10740: }
10741: } elsif (($selfenroll == 1) && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
10742: if ($role eq 'st') {
10743: $refused = '';
10744: } elsif (($context eq 'ltienroll') && ($env{'request.lti.login'})) {
10745: $refused = '';
10746: }
10747: } elsif ($othdomby eq 'othdombyuser') {
10748: my ($key,%queuedrolereq);
10749: if ($context eq 'course') {
10750: my ($sec) = ($url =~ m{^/\Q$cwosec\E/(.*)$});
10751: $key = "$uname:$udom:$role:$sec";
10752: %queuedrolereq = &Apache::lonnet::get('nohist_othdomqueued',[$key],$cdom,$cnum);
10753: if ((exists($queuedrolereq{$key})) && (ref($queuedrolereq{$key}) eq 'HASH')) {
10754: if (($queuedrolereq{$key}{'adj'} eq 'user') && ($queuedrolereq{$key}{'requester'} eq $requester)) {
10755: if ((($role eq 'cc') && ($cnum !~ /^$match_community$/)) ||
10756: (($role eq 'co') && ($cnum =~ /^$match_community$/))) {
10757: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
10758: if ($crsenv{'internal.courseowner'} eq $requester) {
10759: $refused = '';
10760: }
10761: } elsif ($role =~ /^(?:in|ta|ep|st)$/) {
10762: $refused = '';
10763: }
10764: }
10765: }
10766: } elsif (($context eq 'author') && ($role =~ /^ca|aa$/)) {
10767: my $key = "$uname:$udom:$role";
10768: my ($audom,$auname) = ($url =~ m{^/($match_domain)/($match_username)$});
10769: if (($audom ne '') && ($auname ne '')) {
10770: my %queuedrolereq = &Apache::lonnet::get('nohist_othdomqueued',[$key],$audom,$auname);
10771: if ((exists($queuedrolereq{$key})) && (ref($queuedrolereq{$key}) eq 'HASH')) {
10772: if (($queuedrolereq{$key}{'adj'} eq 'user') && ($queuedrolereq{$key}{'requester'} eq $requester)) {
10773: $refused = '';
10774: }
10775: }
10776: }
10777: } elsif (($context eq 'domain') && ($role ne 'dc') && ($role ne 'su')) {
10778: my $key = "$uname:$udom:$role";
10779: my ($roledom) = ($url =~ m{^/($match_domain)/\Q$role\E$});
10780: if ($roledom ne '') {
10781: my $confname = $roledom.'-domainconfig';
10782: my %queuedrolereq = &Apache::lonnet::get('nohist_othdomqueued',[$key],$roledom,$confname);
10783: if ((exists($queuedrolereq{$key})) && (ref($queuedrolereq{$key}) eq 'HASH')) {
10784: if (($queuedrolereq{$key}{'adj'} eq 'user') && ($queuedrolereq{$key}{'requester'} eq $requester)) {
10785: $refused = '';
10786: }
10787: }
10788: }
10789: }
10790: } elsif ($context eq 'requestcourses') {
10791: my @possroles = ('st','ta','ep','in','cc','co');
10792: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
10793: my $wrongcc;
10794: if ($cnum =~ /^$match_community$/) {
10795: $wrongcc = 1 if ($role eq 'cc');
10796: } else {
10797: $wrongcc = 1 if ($role eq 'co');
10798: }
10799: unless ($wrongcc) {
10800: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
10801: if ($crsenv{'internal.courseowner'} eq
10802: $env{'user.name'}.':'.$env{'user.domain'}) {
10803: $refused = '';
10804: }
10805: }
10806: }
10807: } elsif ($context eq 'requestauthor') {
10808: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
10809: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
10810: if ($env{'environment.requestauthor'} eq 'automatic') {
10811: $refused = '';
10812: } else {
10813: my %domdefaults = &get_domain_defaults($udom);
10814: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
10815: my $checkbystatus;
10816: if ($env{'user.adv'}) {
10817: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
10818: if ($disposition eq 'automatic') {
10819: $refused = '';
10820: } elsif ($disposition eq '') {
10821: $checkbystatus = 1;
10822: }
10823: } else {
10824: $checkbystatus = 1;
10825: }
10826: if ($checkbystatus) {
10827: if ($env{'environment.inststatus'}) {
10828: my @inststatuses = split(/,/,$env{'environment.inststatus'});
10829: foreach my $type (@inststatuses) {
10830: if (($type ne '') &&
10831: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
10832: $refused = '';
10833: }
10834: }
10835: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
10836: $refused = '';
10837: }
10838: }
10839: }
10840: }
10841: }
10842: } elsif (($context eq 'author') && (($role eq 'ca' || $role eq 'aa'))) {
10843: if ($url =~ m{^/($match_domain)/($match_username)$}) {
10844: my ($audom,$auname) = ($1,$2);
10845: if ((&Apache::lonnet::allowed('v'.$role,"$audom/$auname")) &&
10846: ($env{"environment.internal.manager.$url"})) {
10847: $refused = '';
10848: $rolelogcontext = 'coauthor';
10849: }
10850: }
10851: }
10852: if ($refused) {
10853: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
10854: ' '.$role.' '.$end.' '.$start.' by '.
10855: $env{'user.name'}.' at '.$env{'user.domain'});
10856: return 'refused';
10857: }
10858: }
10859: } elsif ($role eq 'au') {
10860: if ($url ne '/'.$udom.'/') {
10861: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
10862: ' to assign author role for '.$uname.':'.$udom.
10863: ' in domain: '.$url.' refused (wrong domain).');
10864: return 'refused';
10865: }
10866: }
10867: $mrole=$role;
10868: }
10869: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
10870: "$udom:$uname:$url".'_'."$mrole=$role";
10871: if ($end) { $command.='_'.$end; }
10872: if ($start) {
10873: if ($end) {
10874: $command.='_'.$start;
10875: } else {
10876: $command.='_0_'.$start;
10877: }
10878: }
10879: my $origstart = $start;
10880: my $origend = $end;
10881: my $delflag;
10882: # actually delete
10883: if ($deleteflag) {
10884: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
10885: # modify command to delete the role
10886: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
10887: "$udom:$uname:$url".'_'."$mrole";
10888: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
10889: # set start and finish to negative values for userrolelog
10890: $start=-1;
10891: $end=-1;
10892: $delflag = 1;
10893: }
10894: }
10895: # send command
10896: my $answer=&reply($command,&homeserver($uname,$udom));
10897: # log new user role if status is ok
10898: if ($answer eq 'ok') {
10899: &userrolelog($role,$uname,$udom,$url,$start,$end);
10900: if (($role eq 'cc') || ($role eq 'in') ||
10901: ($role eq 'ep') || ($role eq 'ad') ||
10902: ($role eq 'ta') || ($role eq 'st') ||
10903: ($role=~/^cr/) || ($role eq 'gr') ||
10904: ($role eq 'co')) {
10905: # for course roles, perform group memberships changes triggered by role change.
10906: unless ($role =~ /^gr/) {
10907: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
10908: $origstart,$selfenroll,$context);
10909: }
10910: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
10911: $selfenroll,$context,$othdomby,$requester);
10912: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
10913: ($role eq 'au') || ($role eq 'dc') || ($role eq 'dh') ||
10914: ($role eq 'da')) {
10915: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
10916: $context,$othdomby,$requester);
10917: } elsif (($role eq 'ca') || ($role eq 'aa')) {
10918: if ($rolelogcontext eq '') {
10919: $rolelogcontext = $context;
10920: }
10921: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
10922: $rolelogcontext,$othdomby,$requester);
10923: }
10924: if ($role eq 'cc') {
10925: &autoupdate_coowners($url,$end,$start,$uname,$udom);
10926: }
10927: }
10928: return $answer;
10929: }
10930:
10931: sub autoupdate_coowners {
10932: my ($url,$end,$start,$uname,$udom) = @_;
10933: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
10934: if (($cdom ne '') && ($cnum ne '')) {
10935: my $now = time;
10936: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
10937: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
10938: my %coursehash = &coursedescription($cdom.'_'.$cnum);
10939: my $instcode = $coursehash{'internal.coursecode'};
10940: my $xlists = $coursehash{'internal.crosslistings'};
10941: if ($instcode ne '') {
10942: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
10943: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
10944: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
10945: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
10946: unless ($result eq 'valid') {
10947: if ($xlists ne '') {
10948: foreach my $xlist (split(',',$xlists)) {
10949: my ($inst_crosslist,$lcsec) = split(':',$xlist);
10950: $result =
10951: &auto_validate_inst_crosslist($cnum,$cdom,$instcode,
10952: $inst_crosslist,$uname.':'.$udom);
10953: last if ($result eq 'valid');
10954: }
10955: }
10956: }
10957: if ($result eq 'valid') {
10958: if ($coursehash{'internal.co-owners'}) {
10959: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
10960: push(@newcoowners,$coowner);
10961: }
10962: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
10963: push(@newcoowners,$uname.':'.$udom);
10964: }
10965: @newcoowners = sort(@newcoowners);
10966: } else {
10967: push(@newcoowners,$uname.':'.$udom);
10968: }
10969: } elsif ($coursehash{'internal.co-owners'}) {
10970: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
10971: unless ($coowner eq $uname.':'.$udom) {
10972: push(@newcoowners,$coowner);
10973: }
10974: }
10975: unless (@newcoowners > 0) {
10976: $delcoowners = 1;
10977: $coowners = '';
10978: }
10979: }
10980: if (@newcoowners || $delcoowners) {
10981: &store_coowners($cdom,$cnum,$coursehash{'home'},
10982: $delcoowners,@newcoowners);
10983: }
10984: }
10985: }
10986: }
10987: }
10988: }
10989: }
10990:
10991: sub store_coowners {
10992: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
10993: my $cid = $cdom.'_'.$cnum;
10994: my ($coowners,$delresult,$putresult);
10995: if (@newcoowners) {
10996: $coowners = join(',',@newcoowners);
10997: my %coownershash = (
10998: 'internal.co-owners' => $coowners,
10999: );
11000: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
11001: if ($putresult eq 'ok') {
11002: if ($env{'course.'.$cid.'.num'} eq $cnum) {
11003: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
11004: }
11005: }
11006: }
11007: if ($delcoowners) {
11008: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
11009: if ($delresult eq 'ok') {
11010: if ($env{'course.'.$cid.'.internal.co-owners'}) {
11011: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
11012: }
11013: }
11014: }
11015: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
11016: my %crsinfo =
11017: &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
11018: if (ref($crsinfo{$cid}) eq 'HASH') {
11019: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
11020: my $cidput = &courseidput($cdom,\%crsinfo,$chome,'notime');
11021: }
11022: }
11023: }
11024:
11025: # -------------------------------------------------- Modify user authentication
11026: # Overrides without validation
11027:
11028: sub modifyuserauth {
11029: my ($udom,$uname,$umode,$upass)=@_;
11030: my $uhome=&homeserver($uname,$udom);
11031: my $allowed;
11032: if (&allowed('mau',$udom)) {
11033: $allowed = 1;
11034: } elsif (($umode eq 'internal') && ($udom eq $env{'user.domain'}) &&
11035: ($env{'request.course.id'}) && (&allowed('mip',$env{'request.course.id'})) &&
11036: (!$env{'course.'.$env{'request.course.id'}.'.internal.nopasswdchg'})) {
11037: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
11038: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
11039: if (($cdom ne '') && ($cnum ne '')) {
11040: my $is_owner = &is_course_owner($cdom,$cnum);
11041: if ($is_owner) {
11042: $allowed = 1;
11043: }
11044: }
11045: }
11046: unless ($allowed) { return 'refused'; }
11047: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
11048: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
11049: ' in domain '.$env{'request.role.domain'});
11050: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
11051: &escape($upass),$uhome);
11052: my $ip = &get_requestor_ip();
11053: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
11054: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
11055: '(Remote '.$ip.'): '.$reply);
11056: &log($udom,,$uname,$uhome,
11057: 'Authentication changed by '.$env{'user.domain'}.', '.
11058: $env{'user.name'}.', '.$umode.
11059: '(Remote '.$ip.'): '.$reply);
11060: unless ($reply eq 'ok') {
11061: &logthis('Authentication mode error: '.$reply);
11062: return 'error: '.$reply;
11063: }
11064: return 'ok';
11065: }
11066:
11067: # --------------------------------------------------------------- Modify a user
11068:
11069: sub modifyuser {
11070: my ($udom, $uname, $uid,
11071: $umode, $upass, $first,
11072: $middle, $last, $gene,
11073: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
11074: $udom= &LONCAPA::clean_domain($udom);
11075: $uname=&LONCAPA::clean_username($uname);
11076: my $showcandelete = 'none';
11077: if (ref($candelete) eq 'ARRAY') {
11078: if (@{$candelete} > 0) {
11079: $showcandelete = join(', ',@{$candelete});
11080: }
11081: }
11082: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
11083: $umode.', '.$first.', '.$middle.', '.
11084: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
11085: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
11086: ' desiredhome not specified').
11087: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
11088: ' in domain '.$env{'request.role.domain'});
11089: my $uhome=&homeserver($uname,$udom,'true');
11090: my $newuser;
11091: if ($uhome eq 'no_host') {
11092: $newuser = 1;
11093: unless (($umode && ($upass ne '')) || ($umode eq 'localauth') ||
11094: ($umode eq 'lti')) {
11095: return 'error: more information needed to create new user';
11096: }
11097: }
11098: # ----------------------------------------------------------------- Create User
11099: if (($uhome eq 'no_host') &&
11100: (($umode && $upass) || ($umode eq 'localauth') || ($umode eq 'lti'))) {
11101: my $unhome='';
11102: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
11103: $unhome = $desiredhome;
11104: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
11105: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
11106: } else { # load balancing routine for determining $unhome
11107: my $loadm=10000000;
11108: my %servers = &get_servers($udom,'library');
11109: foreach my $tryserver (keys(%servers)) {
11110: my $answer=reply('load',$tryserver);
11111: if (($answer=~/\d+/) && ($answer<$loadm)) {
11112: $loadm=$answer;
11113: $unhome=$tryserver;
11114: }
11115: }
11116: }
11117: if (($unhome eq '') || ($unhome eq 'no_host')) {
11118: return 'error: unable to find a home server for '.$uname.
11119: ' in domain '.$udom;
11120: }
11121: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
11122: &escape($upass),$unhome);
11123: unless ($reply eq 'ok') {
11124: return 'error: '.$reply;
11125: }
11126: $uhome=&homeserver($uname,$udom,'true');
11127: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
11128: return 'error: unable verify users home machine.';
11129: }
11130: } # End of creation of new user
11131: # ---------------------------------------------------------------------- Add ID
11132: if ($uid) {
11133: $uid=~tr/A-Z/a-z/;
11134: my %uidhash=&idrget($udom,$uname);
11135: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
11136: && (!$forceid)) {
11137: unless ($uid eq $uidhash{$uname}) {
11138: return 'error: user id "'.$uid.'" does not match '.
11139: 'current user id "'.$uidhash{$uname}.'".';
11140: }
11141: } else {
11142: &idput($udom,{$uname => $uid},$uhome,'ids');
11143: }
11144: }
11145: # -------------------------------------------------------------- Add names, etc
11146: my @tmp=&get('environment',
11147: ['firstname','middlename','lastname','generation','id',
11148: 'permanentemail','inststatus'],
11149: $udom,$uname);
11150: my (%names,%oldnames);
11151: if ($tmp[0] =~ m/^error:.*/) {
11152: %names=();
11153: } else {
11154: %names = @tmp;
11155: %oldnames = %names;
11156: }
11157: #
11158: # If name, email and/or uid are blank (e.g., because an uploaded file
11159: # of users did not contain them), do not overwrite existing values
11160: # unless field is in $candelete array ref.
11161: #
11162:
11163: my @fields = ('firstname','middlename','lastname','generation',
11164: 'permanentemail','id');
11165: my %newvalues;
11166: if (ref($candelete) eq 'ARRAY') {
11167: foreach my $field (@fields) {
11168: if (grep(/^\Q$field\E$/,@{$candelete})) {
11169: if ($field eq 'firstname') {
11170: $names{$field} = $first;
11171: } elsif ($field eq 'middlename') {
11172: $names{$field} = $middle;
11173: } elsif ($field eq 'lastname') {
11174: $names{$field} = $last;
11175: } elsif ($field eq 'generation') {
11176: $names{$field} = $gene;
11177: } elsif ($field eq 'permanentemail') {
11178: $names{$field} = $email;
11179: } elsif ($field eq 'id') {
11180: $names{$field} = $uid;
11181: }
11182: }
11183: }
11184: }
11185: if ($first) { $names{'firstname'} = $first; }
11186: if (defined($middle)) { $names{'middlename'} = $middle; }
11187: if ($last) { $names{'lastname'} = $last; }
11188: if (defined($gene)) { $names{'generation'} = $gene; }
11189: if ($email) {
11190: $email=~s/[^\w\@\.\-\,]//gs;
11191: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
11192: }
11193: if ($uid) { $names{'id'} = $uid; }
11194: if (defined($inststatus)) {
11195: $names{'inststatus'} = '';
11196: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
11197: if (ref($usertypes) eq 'HASH') {
11198: my @okstatuses;
11199: foreach my $item (split(/:/,$inststatus)) {
11200: if (defined($usertypes->{$item})) {
11201: push(@okstatuses,$item);
11202: }
11203: }
11204: if (@okstatuses) {
11205: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
11206: }
11207: }
11208: }
11209: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
11210: $umode.', '.$first.', '.$middle.', '.
11211: $last.', '.$gene.', '.$email.', '.$inststatus;
11212: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
11213: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
11214: } else {
11215: $logmsg .= ' during self creation';
11216: }
11217: my $changed;
11218: if ($newuser) {
11219: $changed = 1;
11220: } else {
11221: foreach my $field (@fields) {
11222: if ($names{$field} ne $oldnames{$field}) {
11223: $changed = 1;
11224: last;
11225: }
11226: }
11227: }
11228: unless ($changed) {
11229: $logmsg = 'No changes in user information needed for: '.$logmsg;
11230: &logthis($logmsg);
11231: return 'ok';
11232: }
11233: my $reply = &put('environment', \%names, $udom,$uname);
11234: if ($reply ne 'ok') {
11235: return 'error: '.$reply;
11236: }
11237: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
11238: &devalidate_cache_new('emailscache',$uname.':'.$udom);
11239: }
11240: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
11241: &devalidate_cache_new('namescache',$uname.':'.$udom);
11242: $logmsg = 'Success modifying user '.$logmsg;
11243: &logthis($logmsg);
11244: return 'ok';
11245: }
11246:
11247: # -------------------------------------------------------------- Modify student
11248:
11249: sub modifystudent {
11250: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
11251: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
11252: $selfenroll,$context,$inststatus,$credits,$instsec)=@_;
11253: if (!$cid) {
11254: unless ($cid=$env{'request.course.id'}) {
11255: return 'not_in_class';
11256: }
11257: }
11258: # --------------------------------------------------------------- Make the user
11259: my $reply=&modifyuser
11260: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
11261: $desiredhome,$email,$inststatus);
11262: unless ($reply eq 'ok') { return $reply; }
11263: # This will cause &modify_student_enrollment to get the uid from the
11264: # student's environment
11265: $uid = undef if (!$forceid);
11266: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
11267: $gene,$usec,$end,$start,$type,$locktype,
11268: $cid,$selfenroll,$context,$credits,$instsec);
11269: return $reply;
11270: }
11271:
11272: sub modify_student_enrollment {
11273: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
11274: $locktype,$cid,$selfenroll,$context,$credits,$instsec,$othdomby,$requester) = @_;
11275: my ($cdom,$cnum,$chome);
11276: if (!$cid) {
11277: unless ($cid=$env{'request.course.id'}) {
11278: return 'not_in_class';
11279: }
11280: $cdom=$env{'course.'.$cid.'.domain'};
11281: $cnum=$env{'course.'.$cid.'.num'};
11282: } else {
11283: ($cdom,$cnum)=split(/_/,$cid);
11284: }
11285: $chome=$env{'course.'.$cid.'.home'};
11286: if (!$chome) {
11287: $chome=&homeserver($cnum,$cdom);
11288: }
11289: if (!$chome) { return 'unknown_course'; }
11290: # Make sure the user exists
11291: my $uhome=&homeserver($uname,$udom);
11292: if (($uhome eq '') || ($uhome eq 'no_host')) {
11293: return 'error: no such user';
11294: }
11295: # Get student data if we were not given enough information
11296: if (!defined($first) || $first eq '' ||
11297: !defined($last) || $last eq '' ||
11298: !defined($uid) || $uid eq '' ||
11299: !defined($middle) || $middle eq '' ||
11300: !defined($gene) || $gene eq '') {
11301: # They did not supply us with enough data to enroll the student, so
11302: # we need to pick up more information.
11303: my %tmp = &get('environment',
11304: ['firstname','middlename','lastname', 'generation','id']
11305: ,$udom,$uname);
11306:
11307: #foreach my $key (keys(%tmp)) {
11308: # &logthis("key $key = ".$tmp{$key});
11309: #}
11310: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
11311: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
11312: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
11313: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
11314: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
11315: }
11316: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
11317: my $user = "$uname:$udom";
11318: my %old_entry = &get('classlist',[$user],$cdom,$cnum);
11319: my $reply=cput('classlist',
11320: {$user =>
11321: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits,$instsec) },
11322: $cdom,$cnum);
11323: if (($reply eq 'ok') || ($reply eq 'delayed')) {
11324: &devalidate_getsection_cache($udom,$uname,$cid);
11325: } else {
11326: return 'error: '.$reply;
11327: }
11328: # Add student role to user
11329: my $uurl='/'.$cid;
11330: $uurl=~s/\_/\//g;
11331: if ($usec) {
11332: $uurl.='/'.$usec;
11333: }
11334: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
11335: $selfenroll,$context,$othdomby,$requester);
11336: if ($result ne 'ok') {
11337: if ($old_entry{$user} ne '') {
11338: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
11339: } else {
11340: $reply = &del('classlist',[$user],$cdom,$cnum);
11341: }
11342: }
11343: return $result;
11344: }
11345:
11346: sub format_name {
11347: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
11348: my $name;
11349: if ($first ne 'lastname') {
11350: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
11351: } else {
11352: if ($lastname=~/\S/) {
11353: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
11354: $name=~s/\s+,/,/;
11355: } else {
11356: $name.= $firstname.' '.$middlename.' '.$generation;
11357: }
11358: }
11359: $name=~s/^\s+//;
11360: $name=~s/\s+$//;
11361: $name=~s/\s+/ /g;
11362: return $name;
11363: }
11364:
11365: # ------------------------------------------------- Write to course preferences
11366:
11367: sub writecoursepref {
11368: my ($courseid,%prefs)=@_;
11369: $courseid=~s/^\///;
11370: $courseid=~s/\_/\//g;
11371: my ($cdomain,$cnum)=split(/\//,$courseid);
11372: my $chome=homeserver($cnum,$cdomain);
11373: if (($chome eq '') || ($chome eq 'no_host')) {
11374: return 'error: no such course';
11375: }
11376: my $cstring='';
11377: foreach my $pref (keys(%prefs)) {
11378: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
11379: }
11380: $cstring=~s/\&$//;
11381: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
11382: }
11383:
11384: # ---------------------------------------------------------- Make/modify course
11385:
11386: sub createcourse {
11387: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
11388: $course_owner,$crstype,$cnum,$context,$category,$callercontext)=@_;
11389: $url=&declutter($url);
11390: my $cid='';
11391: if ($context eq 'requestcourses') {
11392: my $can_create = 0;
11393: my ($ownername,$ownerdom) = split(':',$course_owner);
11394: if ($udom eq $ownerdom) {
11395: my $reload;
11396: if (($callercontext eq 'auto') &&
11397: ($ownerdom eq $env{'user.domain'}) && ($ownername eq $env{'user.name'})) {
11398: $reload = 'reload';
11399: }
11400: if (&usertools_access($ownername,$ownerdom,$category,$reload,
11401: $context)) {
11402: $can_create = 1;
11403: }
11404: } else {
11405: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
11406: $category);
11407: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
11408: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
11409: if (@curr > 0) {
11410: my @options = qw(approval validate autolimit);
11411: my $optregex = join('|',@options);
11412: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
11413: $can_create = 1;
11414: }
11415: }
11416: }
11417: }
11418: if ($can_create) {
11419: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
11420: unless (&allowed('ccc',$udom)) {
11421: return 'refused';
11422: }
11423: }
11424: } else {
11425: return 'refused';
11426: }
11427: } elsif (!&allowed('ccc',$udom)) {
11428: return 'refused';
11429: }
11430: # --------------------------------------------------------------- Get Unique ID
11431: my $uname;
11432: if ($cnum =~ /^$match_courseid$/) {
11433: my $chome=&homeserver($cnum,$udom,'true');
11434: if (($chome eq '') || ($chome eq 'no_host')) {
11435: $uname = $cnum;
11436: } else {
11437: $uname = &generate_coursenum($udom,$crstype);
11438: }
11439: } else {
11440: $uname = &generate_coursenum($udom,$crstype);
11441: }
11442: return $uname if ($uname =~ /^error/);
11443: # -------------------------------------------------- Check supplied server name
11444: if (!defined($course_server)) {
11445: if (defined(&domain($udom,'primary'))) {
11446: $course_server = &domain($udom,'primary');
11447: } else {
11448: $course_server = $env{'user.home'};
11449: }
11450: }
11451: my %host_servers =
11452: &get_servers($udom,'library');
11453: unless ($host_servers{$course_server}) {
11454: return 'error: invalid home server for course: '.$course_server;
11455: }
11456: # ------------------------------------------------------------- Make the course
11457: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
11458: $course_server);
11459: unless ($reply eq 'ok') { return 'error: '.$reply; }
11460: my $uhome=&homeserver($uname,$udom,'true');
11461: if (($uhome eq '') || ($uhome eq 'no_host')) {
11462: return 'error: no such course';
11463: }
11464: # ----------------------------------------------------------------- Course made
11465: # log existence
11466: my $now = time;
11467: my $newcourse = {
11468: $udom.'_'.$uname => {
11469: description => $description,
11470: inst_code => $inst_code,
11471: owner => $course_owner,
11472: type => $crstype,
11473: creator => $env{'user.name'}.':'.
11474: $env{'user.domain'},
11475: created => $now,
11476: context => $context,
11477: },
11478: };
11479: &courseidput($udom,$newcourse,$uhome,'notime');
11480: # set toplevel url
11481: my $topurl=$url;
11482: unless ($nonstandard) {
11483: # ------------------------------------------ For standard courses, make top url
11484: my $mapurl=&clutter($url);
11485: if ($mapurl eq '/res/') { $mapurl=''; }
11486: $env{'form.initmap'}=(<<ENDINITMAP);
11487: <map>
11488: <resource id="1" type="start"></resource>
11489: <resource id="2" src="$mapurl"></resource>
11490: <resource id="3" type="finish"></resource>
11491: <link index="1" from="1" to="2"></link>
11492: <link index="2" from="2" to="3"></link>
11493: </map>
11494: ENDINITMAP
11495: $topurl=&declutter(
11496: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
11497: );
11498: }
11499: # ----------------------------------------------------------- Write preferences
11500: &writecoursepref($udom.'_'.$uname,
11501: ('description' => $description,
11502: 'url' => $topurl,
11503: 'internal.creator' => $env{'user.name'}.':'.
11504: $env{'user.domain'},
11505: 'internal.created' => $now,
11506: 'internal.creationcontext' => $context)
11507: );
11508: return '/'.$udom.'/'.$uname;
11509: }
11510:
11511: # ------------------------------------------------------------------- Create ID
11512: sub generate_coursenum {
11513: my ($udom,$crstype) = @_;
11514: my $domdesc = &domain($udom);
11515: return 'error: invalid domain' if ($domdesc eq '');
11516: my $first;
11517: if ($crstype eq 'Community') {
11518: $first = '0';
11519: } else {
11520: $first = int(1+rand(9));
11521: }
11522: my $uname=$first.
11523: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
11524: substr($$.time,0,5).unpack("H8",pack("I32",time)).
11525: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
11526: # ----------------------------------------------- Make sure that does not exist
11527: my $uhome=&homeserver($uname,$udom,'true');
11528: unless (($uhome eq '') || ($uhome eq 'no_host')) {
11529: if ($crstype eq 'Community') {
11530: $first = '0';
11531: } else {
11532: $first = int(1+rand(9));
11533: }
11534: $uname=$first.
11535: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
11536: substr($$.time,0,5).unpack("H8",pack("I32",time)).
11537: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
11538: $uhome=&homeserver($uname,$udom,'true');
11539: unless (($uhome eq '') || ($uhome eq 'no_host')) {
11540: return 'error: unable to generate unique course-ID';
11541: }
11542: }
11543: return $uname;
11544: }
11545:
11546: sub is_course {
11547: my ($cdom, $cnum) = scalar(@_) == 1 ?
11548: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
11549:
11550: return unless (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/));
11551: my $uhome=&homeserver($cnum,$cdom);
11552: my $iscourse;
11553: if (grep { $_ eq $uhome } current_machine_ids()) {
11554: $iscourse = &LONCAPA::Lond::is_course($cdom,$cnum);
11555: } else {
11556: my $hashid = $cdom.':'.$cnum;
11557: ($iscourse,my $cached) = &is_cached_new('iscourse',$hashid);
11558: unless (defined($cached)) {
11559: my %courses = &courseiddump($cdom, '.', 1, '.', '.',
11560: $cnum,undef,undef,'.');
11561: $iscourse = 0;
11562: if (exists($courses{$cdom.'_'.$cnum})) {
11563: $iscourse = 1;
11564: }
11565: &do_cache_new('iscourse',$hashid,$iscourse,3600);
11566: }
11567: }
11568: return unless ($iscourse);
11569: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
11570: }
11571:
11572: sub store_userdata {
11573: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
11574: my $result;
11575: if ($datakey ne '') {
11576: if (ref($storehash) eq 'HASH') {
11577: if ($udom eq '' || $uname eq '') {
11578: $udom = $env{'user.domain'};
11579: $uname = $env{'user.name'};
11580: }
11581: my $uhome=&homeserver($uname,$udom);
11582: if (($uhome eq '') || ($uhome eq 'no_host')) {
11583: $result = 'error: no_host';
11584: } else {
11585: $storehash->{'ip'} = &get_requestor_ip();
11586: $storehash->{'host'} = $perlvar{'lonHostID'};
11587:
11588: my $namevalue='';
11589: foreach my $key (keys(%{$storehash})) {
11590: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
11591: }
11592: $namevalue=~s/\&$//;
11593: unless ($namespace eq 'courserequests') {
11594: $datakey = &escape($datakey);
11595: }
11596: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
11597: $namevalue,$uhome);
11598: }
11599: } else {
11600: $result = 'error: data to store was not a hash reference';
11601: }
11602: } else {
11603: $result= 'error: invalid requestkey';
11604: }
11605: return $result;
11606: }
11607:
11608: # ---------------------------------------------------------- Assign Custom Role
11609:
11610: sub assigncustomrole {
11611: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,
11612: $selfenroll,$context,$othdomby,$requester)=@_;
11613: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
11614: $end,$start,$deleteflag,$selfenroll,$context,$othdomby,
11615: $requester);
11616: }
11617:
11618: # ----------------------------------------------------------------- Revoke Role
11619:
11620: sub revokerole {
11621: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
11622: my $now=time;
11623: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
11624: }
11625:
11626: # ---------------------------------------------------------- Revoke Custom Role
11627:
11628: sub revokecustomrole {
11629: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
11630: my $now=time;
11631: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
11632: $deleteflag,$selfenroll,$context);
11633: }
11634:
11635: # ------------------------------------------------------------ Disk usage
11636: sub diskusage {
11637: my ($udom,$uname,$directorypath,$getpropath)=@_;
11638: $directorypath =~ s/\/$//;
11639: my $listing=&reply('du2:'.&escape($directorypath).':'
11640: .&escape($getpropath).':'.&escape($uname).':'
11641: .&escape($udom),homeserver($uname,$udom));
11642: if ($listing eq 'unknown_cmd') {
11643: if ($getpropath) {
11644: $directorypath = &propath($udom,$uname).'/'.$directorypath;
11645: }
11646: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
11647: }
11648: return $listing;
11649: }
11650:
11651: sub is_locked {
11652: my ($file_name, $domain, $user, $which) = @_;
11653: my @check;
11654: my $is_locked;
11655: push (@check,$file_name);
11656: my %locked = &get('file_permissions',\@check,
11657: $env{'user.domain'},$env{'user.name'});
11658: my ($tmp)=keys(%locked);
11659: if ($tmp=~/^error:/) { undef(%locked); }
11660:
11661: if (ref($locked{$file_name}) eq 'ARRAY') {
11662: $is_locked = 'false';
11663: foreach my $entry (@{$locked{$file_name}}) {
11664: if (ref($entry) eq 'ARRAY') {
11665: $is_locked = 'true';
11666: if (ref($which) eq 'ARRAY') {
11667: push(@{$which},$entry);
11668: } else {
11669: last;
11670: }
11671: }
11672: }
11673: } else {
11674: $is_locked = 'false';
11675: }
11676: return $is_locked;
11677: }
11678:
11679: sub declutter_portfile {
11680: my ($file) = @_;
11681: $file =~ s{^(/portfolio/|portfolio/)}{/};
11682: return $file;
11683: }
11684:
11685: # ------------------------------------------------------------- Mark as Read Only
11686:
11687: sub mark_as_readonly {
11688: my ($domain,$user,$files,$what) = @_;
11689: my %current_permissions = &dump('file_permissions',$domain,$user);
11690: my ($tmp)=keys(%current_permissions);
11691: if ($tmp=~/^error:/) { undef(%current_permissions); }
11692: foreach my $file (@{$files}) {
11693: $file = &declutter_portfile($file);
11694: push(@{$current_permissions{$file}},$what);
11695: }
11696: &put('file_permissions',\%current_permissions,$domain,$user);
11697: return;
11698: }
11699:
11700: # ------------------------------------------------------------Save Selected Files
11701:
11702: sub save_selected_files {
11703: my ($user, $path, @files) = @_;
11704: my $filename = $user."savedfiles";
11705: my @other_files = &files_not_in_path($user, $path);
11706: open (OUT,'>',LONCAPA::tempdir().$filename);
11707: foreach my $file (@files) {
11708: print (OUT $env{'form.currentpath'}.$file."\n");
11709: }
11710: foreach my $file (@other_files) {
11711: print (OUT $file."\n");
11712: }
11713: close (OUT);
11714: return 'ok';
11715: }
11716:
11717: sub clear_selected_files {
11718: my ($user) = @_;
11719: my $filename = $user."savedfiles";
11720: open (OUT,'>',LONCAPA::tempdir().$filename);
11721: print (OUT undef);
11722: close (OUT);
11723: return ("ok");
11724: }
11725:
11726: sub files_in_path {
11727: my ($user, $path) = @_;
11728: my $filename = $user."savedfiles";
11729: my %return_files;
11730: open (IN,'<',LONCAPA::tempdir().$filename);
11731: while (my $line_in = <IN>) {
11732: chomp ($line_in);
11733: my @paths_and_file = split (m!/!, $line_in);
11734: my $file_part = pop (@paths_and_file);
11735: my $path_part = join ('/', @paths_and_file);
11736: $path_part.='/';
11737: my $path_and_file = $path_part.$file_part;
11738: if ($path_part eq $path) {
11739: $return_files{$file_part}= 'selected';
11740: }
11741: }
11742: close (IN);
11743: return (\%return_files);
11744: }
11745:
11746: # called in portfolio select mode, to show files selected NOT in current directory
11747: sub files_not_in_path {
11748: my ($user, $path) = @_;
11749: my $filename = $user."savedfiles";
11750: my @return_files;
11751: my $path_part;
11752: open(IN, '<',LONCAPA::tempdir().$filename);
11753: while (my $line = <IN>) {
11754: #ok, I know it's clunky, but I want it to work
11755: my @paths_and_file = split(m|/|, $line);
11756: my $file_part = pop(@paths_and_file);
11757: chomp($file_part);
11758: my $path_part = join('/', @paths_and_file);
11759: $path_part .= '/';
11760: my $path_and_file = $path_part.$file_part;
11761: if ($path_part ne $path) {
11762: push(@return_files, ($path_and_file));
11763: }
11764: }
11765: close(OUT);
11766: return (@return_files);
11767: }
11768:
11769: #------------------------------Submitted/Handedback Portfolio Files Versioning
11770:
11771: sub portfiles_versioning {
11772: my ($symb,$domain,$stu_name,$portfiles,$versioned_portfiles) = @_;
11773: my $portfolio_root = '/userfiles/portfolio';
11774: return unless ((ref($portfiles) eq 'ARRAY') && (ref($versioned_portfiles) eq 'ARRAY'));
11775: foreach my $file (@{$portfiles}) {
11776: &unmark_as_readonly($domain,$stu_name,[$symb,$env{'request.course.id'}],$file);
11777: my ($directory,$answer_file) =($file =~ /^(.*?)([^\/]*)$/);
11778: my ($answer_name,$answer_ver,$answer_ext) = &file_name_version_ext($answer_file);
11779: my $getpropath = 1;
11780: my ($dir_list,$listerror) = &dirlist($portfolio_root.$directory,$domain,
11781: $stu_name,$getpropath);
11782: my $version = &get_next_version($answer_name,$answer_ext,$dir_list);
11783: my $new_answer =
11784: &version_selected_portfile($domain,$stu_name,$directory,$answer_file,$version);
11785: if ($new_answer ne 'problem getting file') {
11786: push(@{$versioned_portfiles}, $directory.$new_answer);
11787: &mark_as_readonly($domain,$stu_name,[$directory.$new_answer],
11788: [$symb,$env{'request.course.id'},'graded']);
11789: }
11790: }
11791: }
11792:
11793: sub get_next_version {
11794: my ($answer_name, $answer_ext, $dir_list) = @_;
11795: my $version;
11796: if (ref($dir_list) eq 'ARRAY') {
11797: foreach my $row (@{$dir_list}) {
11798: my ($file) = split(/\&/,$row,2);
11799: my ($file_name,$file_version,$file_ext) =
11800: &file_name_version_ext($file);
11801: if (($file_name eq $answer_name) &&
11802: ($file_ext eq $answer_ext)) {
11803: # gets here if filename and extension match,
11804: # regardless of version
11805: if ($file_version ne '') {
11806: # a versioned file is found so save it for later
11807: if ($file_version > $version) {
11808: $version = $file_version;
11809: }
11810: }
11811: }
11812: }
11813: }
11814: $version ++;
11815: return($version);
11816: }
11817:
11818: sub version_selected_portfile {
11819: my ($domain,$stu_name,$directory,$file_name,$version) = @_;
11820: my ($answer_name,$answer_ver,$answer_ext) =
11821: &file_name_version_ext($file_name);
11822: my $new_answer;
11823: $env{'form.copy'} =
11824: &getfile("/uploaded/$domain/$stu_name/portfolio$directory$file_name");
11825: if($env{'form.copy'} eq '-1') {
11826: $new_answer = 'problem getting file';
11827: } else {
11828: $new_answer = $answer_name.'.'.$version.'.'.$answer_ext;
11829: my $copy_result =
11830: &finishuserfileupload($stu_name,$domain,'copy',
11831: '/portfolio'.$directory.$new_answer);
11832: }
11833: undef($env{'form.copy'});
11834: return ($new_answer);
11835: }
11836:
11837: sub file_name_version_ext {
11838: my ($file)=@_;
11839: my @file_parts = split(/\./, $file);
11840: my ($name,$version,$ext);
11841: if (@file_parts > 1) {
11842: $ext=pop(@file_parts);
11843: if (@file_parts > 1 && $file_parts[-1] =~ /^\d+$/) {
11844: $version=pop(@file_parts);
11845: }
11846: $name=join('.',@file_parts);
11847: } else {
11848: $name=join('.',@file_parts);
11849: }
11850: return($name,$version,$ext);
11851: }
11852:
11853: #----------------------------------------------Get portfolio file permissions
11854:
11855: sub get_portfile_permissions {
11856: my ($domain,$user) = @_;
11857: my %current_permissions = &dump('file_permissions',$domain,$user);
11858: my ($tmp)=keys(%current_permissions);
11859: if ($tmp=~/^error:/) { undef(%current_permissions); }
11860: return \%current_permissions;
11861: }
11862:
11863: #---------------------------------------------Get portfolio file access controls
11864:
11865: sub get_access_controls {
11866: my ($current_permissions,$group,$file) = @_;
11867: my %access;
11868: my $real_file = $file;
11869: $file =~ s/\.meta$//;
11870: if (defined($file)) {
11871: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
11872: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
11873: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
11874: }
11875: }
11876: } else {
11877: foreach my $key (keys(%{$current_permissions})) {
11878: if ($key =~ /\0accesscontrol$/) {
11879: if (defined($group)) {
11880: if ($key !~ m-^\Q$group\E/-) {
11881: next;
11882: }
11883: }
11884: my ($fullpath) = split(/\0/,$key);
11885: if (ref($$current_permissions{$key}) eq 'HASH') {
11886: foreach my $control (keys(%{$$current_permissions{$key}})) {
11887: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
11888: }
11889: }
11890: }
11891: }
11892: }
11893: return %access;
11894: }
11895:
11896: sub modify_access_controls {
11897: my ($file_name,$changes,$domain,$user)=@_;
11898: my ($outcome,$deloutcome);
11899: my %store_permissions;
11900: my %new_values;
11901: my %new_control;
11902: my %translation;
11903: my @deletions = ();
11904: my $now = time;
11905: if (exists($$changes{'activate'})) {
11906: if (ref($$changes{'activate'}) eq 'HASH') {
11907: my @newitems = sort(keys(%{$$changes{'activate'}}));
11908: my $numnew = scalar(@newitems);
11909: for (my $i=0; $i<$numnew; $i++) {
11910: my $newkey = $newitems[$i];
11911: my $newid = &Apache::loncommon::get_cgi_id();
11912: if ($newkey =~ /^\d+:/) {
11913: $newkey =~ s/^(\d+)/$newid/;
11914: $translation{$1} = $newid;
11915: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
11916: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
11917: $translation{$1} = $newid;
11918: }
11919: $new_values{$file_name."\0".$newkey} =
11920: $$changes{'activate'}{$newitems[$i]};
11921: $new_control{$newkey} = $now;
11922: }
11923: }
11924: }
11925: my %todelete;
11926: my %changed_items;
11927: foreach my $action ('delete','update') {
11928: if (exists($$changes{$action})) {
11929: if (ref($$changes{$action}) eq 'HASH') {
11930: foreach my $key (keys(%{$$changes{$action}})) {
11931: my ($itemnum) = ($key =~ /^([^:]+):/);
11932: if ($action eq 'delete') {
11933: $todelete{$itemnum} = 1;
11934: } else {
11935: $changed_items{$itemnum} = $key;
11936: }
11937: }
11938: }
11939: }
11940: }
11941: # get lock on access controls for file.
11942: my $lockhash = {
11943: $file_name."\0".'locked_access_records' => $env{'user.name'}.
11944: ':'.$env{'user.domain'},
11945: };
11946: my $tries = 0;
11947: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
11948:
11949: while (($gotlock ne 'ok') && $tries < 10) {
11950: $tries ++;
11951: sleep(0.1);
11952: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
11953: }
11954: if ($gotlock eq 'ok') {
11955: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
11956: my ($tmp)=keys(%curr_permissions);
11957: if ($tmp=~/^error:/) { undef(%curr_permissions); }
11958: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
11959: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
11960: if (ref($curr_controls) eq 'HASH') {
11961: foreach my $control_item (keys(%{$curr_controls})) {
11962: my ($itemnum) = ($control_item =~ /^([^:]+):/);
11963: if (defined($todelete{$itemnum})) {
11964: push(@deletions,$file_name."\0".$control_item);
11965: } else {
11966: if (defined($changed_items{$itemnum})) {
11967: $new_control{$changed_items{$itemnum}} = $now;
11968: push(@deletions,$file_name."\0".$control_item);
11969: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
11970: } else {
11971: $new_control{$control_item} = $$curr_controls{$control_item};
11972: }
11973: }
11974: }
11975: }
11976: }
11977: my ($group);
11978: if (&is_course($domain,$user)) {
11979: ($group,my $file) = split(/\//,$file_name,2);
11980: }
11981: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
11982: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
11983: $outcome = &put('file_permissions',\%new_values,$domain,$user);
11984: # remove lock
11985: my @del_lock = ($file_name."\0".'locked_access_records');
11986: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
11987: my $sqlresult =
11988: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
11989: $group);
11990: } else {
11991: $outcome = "error: could not obtain lockfile\n";
11992: }
11993: return ($outcome,$deloutcome,\%new_values,\%translation);
11994: }
11995:
11996: sub make_public_indefinitely {
11997: my (@requrl) = @_;
11998: return &automated_portfile_access('public',\@requrl);
11999: }
12000:
12001: sub automated_portfile_access {
12002: my ($accesstype,$addsref,$delsref,$info) = @_;
12003: unless (($accesstype eq 'public') || ($accesstype eq 'ip')) {
12004: return 'invalid';
12005: }
12006: my %urls;
12007: if (ref($addsref) eq 'ARRAY') {
12008: foreach my $requrl (@{$addsref}) {
12009: if (&is_portfolio_url($requrl)) {
12010: unless (exists($urls{$requrl})) {
12011: $urls{$requrl} = 'add';
12012: }
12013: }
12014: }
12015: }
12016: if (ref($delsref) eq 'ARRAY') {
12017: foreach my $requrl (@{$delsref}) {
12018: if (&is_portfolio_url($requrl)) {
12019: unless (exists($urls{$requrl})) {
12020: $urls{$requrl} = 'delete';
12021: }
12022: }
12023: }
12024: }
12025: unless (keys(%urls)) {
12026: return 'invalid';
12027: }
12028: my $ip;
12029: if ($accesstype eq 'ip') {
12030: if (ref($info) eq 'HASH') {
12031: if ($info->{'ip'} ne '') {
12032: $ip = $info->{'ip'};
12033: }
12034: }
12035: if ($ip eq '') {
12036: return 'invalid';
12037: }
12038: }
12039: my $errors;
12040: my $now = time;
12041: my %current_perms;
12042: foreach my $requrl (sort(keys(%urls))) {
12043: my $action;
12044: if ($urls{$requrl} eq 'add') {
12045: $action = 'activate';
12046: } else {
12047: $action = 'none';
12048: }
12049: my $aclnum = 0;
12050: my (undef,$udom,$unum,$file_name,$group) =
12051: &parse_portfolio_url($requrl);
12052: unless (exists($current_perms{$unum.':'.$udom})) {
12053: $current_perms{$unum.':'.$udom} = &get_portfile_permissions($udom,$unum);
12054: }
12055: my %access_controls = &get_access_controls($current_perms{$unum.':'.$udom},
12056: $group,$file_name);
12057: foreach my $key (keys(%{$access_controls{$file_name}})) {
12058: my ($num,$scope,$end,$start) =
12059: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
12060: if ($scope eq $accesstype) {
12061: if (($start <= $now) && ($end == 0)) {
12062: if ($accesstype eq 'ip') {
12063: if (ref($access_controls{$file_name}{$key}) eq 'HASH') {
12064: if (ref($access_controls{$file_name}{$key}{'ip'}) eq 'ARRAY') {
12065: if (grep(/^\Q$ip\E$/,@{$access_controls{$file_name}{$key}{'ip'}})) {
12066: if ($urls{$requrl} eq 'add') {
12067: $action = 'none';
12068: last;
12069: } else {
12070: $action = 'delete';
12071: $aclnum = $num;
12072: last;
12073: }
12074: }
12075: }
12076: }
12077: } elsif ($accesstype eq 'public') {
12078: if ($urls{$requrl} eq 'add') {
12079: $action = 'none';
12080: last;
12081: } else {
12082: $action = 'delete';
12083: $aclnum = $num;
12084: last;
12085: }
12086: }
12087: } elsif ($accesstype eq 'public') {
12088: $action = 'update';
12089: $aclnum = $num;
12090: last;
12091: }
12092: }
12093: }
12094: if ($action eq 'none') {
12095: next;
12096: } else {
12097: my %changes;
12098: my $newend = 0;
12099: my $newstart = $now;
12100: my $newkey = $aclnum.':'.$accesstype.'_'.$newend.'_'.$newstart;
12101: $changes{$action}{$newkey} = {
12102: type => $accesstype,
12103: time => {
12104: start => $newstart,
12105: end => $newend,
12106: },
12107: };
12108: if ($accesstype eq 'ip') {
12109: $changes{$action}{$newkey}{'ip'} = [$ip];
12110: }
12111: my ($outcome,$deloutcome,$new_values,$translation) =
12112: &modify_access_controls($file_name,\%changes,$udom,$unum);
12113: unless ($outcome eq 'ok') {
12114: $errors .= $outcome.' ';
12115: }
12116: }
12117: }
12118: if ($errors) {
12119: $errors =~ s/\s$//;
12120: return $errors;
12121: } else {
12122: return 'ok';
12123: }
12124: }
12125:
12126: #------------------------------------------------------Get Marked as Read Only
12127:
12128: sub get_marked_as_readonly {
12129: my ($domain,$user,$what,$group) = @_;
12130: my $current_permissions = &get_portfile_permissions($domain,$user);
12131: my @readonly_files;
12132: my $cmp1=$what;
12133: if (ref($what)) { $cmp1=join('',@{$what}) };
12134: while (my ($file_name,$value) = each(%{$current_permissions})) {
12135: if (defined($group)) {
12136: if ($file_name !~ m-^\Q$group\E/-) {
12137: next;
12138: }
12139: }
12140: if (ref($value) eq "ARRAY"){
12141: foreach my $stored_what (@{$value}) {
12142: my $cmp2=$stored_what;
12143: if (ref($stored_what) eq 'ARRAY') {
12144: $cmp2=join('',@{$stored_what});
12145: }
12146: if ($cmp1 eq $cmp2) {
12147: push(@readonly_files, $file_name);
12148: last;
12149: } elsif (!defined($what)) {
12150: push(@readonly_files, $file_name);
12151: last;
12152: }
12153: }
12154: }
12155: }
12156: return @readonly_files;
12157: }
12158: #-----------------------------------------------------------Get Marked as Read Only Hash
12159:
12160: sub get_marked_as_readonly_hash {
12161: my ($current_permissions,$group,$what) = @_;
12162: my %readonly_files;
12163: while (my ($file_name,$value) = each(%{$current_permissions})) {
12164: if (defined($group)) {
12165: if ($file_name !~ m-^\Q$group\E/-) {
12166: next;
12167: }
12168: }
12169: if (ref($value) eq "ARRAY"){
12170: foreach my $stored_what (@{$value}) {
12171: if (ref($stored_what) eq 'ARRAY') {
12172: foreach my $lock_descriptor(@{$stored_what}) {
12173: if ($lock_descriptor eq 'graded') {
12174: $readonly_files{$file_name} = 'graded';
12175: } elsif ($lock_descriptor eq 'handback') {
12176: $readonly_files{$file_name} = 'handback';
12177: } else {
12178: if (!exists($readonly_files{$file_name})) {
12179: $readonly_files{$file_name} = 'locked';
12180: }
12181: }
12182: }
12183: }
12184: }
12185: }
12186: }
12187: return %readonly_files;
12188: }
12189: # ------------------------------------------------------------ Unmark as Read Only
12190:
12191: sub unmark_as_readonly {
12192: # unmarks $file_name (if $file_name is defined), or all files locked by $what
12193: # for portfolio submissions, $what contains [$symb,$crsid]
12194: my ($domain,$user,$what,$file_name,$group) = @_;
12195: $file_name = &declutter_portfile($file_name);
12196: my $symb_crs = $what;
12197: if (ref($what)) { $symb_crs=join('',@$what); }
12198: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
12199: my ($tmp)=keys(%current_permissions);
12200: if ($tmp=~/^error:/) { undef(%current_permissions); }
12201: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
12202: foreach my $file (@readonly_files) {
12203: my $clean_file = &declutter_portfile($file);
12204: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
12205: my $current_locks = $current_permissions{$file};
12206: my @new_locks;
12207: my @del_keys;
12208: if (ref($current_locks) eq "ARRAY"){
12209: foreach my $locker (@{$current_locks}) {
12210: my $compare=$locker;
12211: if (ref($locker) eq 'ARRAY') {
12212: $compare=join('',@{$locker});
12213: if ($compare ne $symb_crs) {
12214: push(@new_locks, $locker);
12215: }
12216: }
12217: }
12218: if (scalar(@new_locks) > 0) {
12219: $current_permissions{$file} = \@new_locks;
12220: } else {
12221: push(@del_keys, $file);
12222: &del('file_permissions',\@del_keys, $domain, $user);
12223: delete($current_permissions{$file});
12224: }
12225: }
12226: }
12227: &put('file_permissions',\%current_permissions,$domain,$user);
12228: return;
12229: }
12230:
12231: # ------------------------------------------------------------ Directory lister
12232:
12233: sub dirlist {
12234: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
12235: $uri=~s/^\///;
12236: $uri=~s/\/$//;
12237: my ($udom, $uname);
12238: if ($getuserdir) {
12239: $udom = $userdomain;
12240: $uname = $username;
12241: } else {
12242: (undef,$udom,$uname)=split(/\//,$uri);
12243: if(defined($userdomain)) {
12244: $udom = $userdomain;
12245: }
12246: if(defined($username)) {
12247: $uname = $username;
12248: }
12249: }
12250: my ($dirRoot,$listing,@listing_results);
12251:
12252: $dirRoot = $perlvar{'lonDocRoot'};
12253: if (defined($getpropath)) {
12254: $dirRoot = &propath($udom,$uname);
12255: $dirRoot =~ s/\/$//;
12256: } elsif (defined($getuserdir)) {
12257: my $subdir=$uname.'__';
12258: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
12259: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
12260: ."/$udom/$subdir/$uname";
12261: } elsif (defined($alternateRoot)) {
12262: $dirRoot = $alternateRoot;
12263: }
12264:
12265: if($udom) {
12266: if($uname) {
12267: my $uhome = &homeserver($uname,$udom);
12268: if ($uhome eq 'no_host') {
12269: return ([],'no_host');
12270: }
12271: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
12272: .$getuserdir.':'.&escape($dirRoot)
12273: .':'.&escape($uname).':'.&escape($udom),$uhome);
12274: if ($listing eq 'unknown_cmd') {
12275: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
12276: } else {
12277: @listing_results = map { &unescape($_); } split(/:/,$listing);
12278: }
12279: if ($listing eq 'unknown_cmd') {
12280: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
12281: @listing_results = split(/:/,$listing);
12282: } else {
12283: @listing_results = map { &unescape($_); } split(/:/,$listing);
12284: }
12285: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
12286: ($listing eq 'rejected') || ($listing eq 'refused') ||
12287: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
12288: return ([],$listing);
12289: } else {
12290: return (\@listing_results);
12291: }
12292: } elsif(!$alternateRoot) {
12293: my (%allusers,%listerror);
12294: my %servers = &get_servers($udom,'library');
12295: foreach my $tryserver (keys(%servers)) {
12296: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
12297: &escape($udom),$tryserver);
12298: if ($listing eq 'unknown_cmd') {
12299: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
12300: $udom, $tryserver);
12301: } else {
12302: @listing_results = map { &unescape($_); } split(/:/,$listing);
12303: }
12304: if ($listing eq 'unknown_cmd') {
12305: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
12306: $udom, $tryserver);
12307: @listing_results = split(/:/,$listing);
12308: } else {
12309: @listing_results =
12310: map { &unescape($_); } split(/:/,$listing);
12311: }
12312: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
12313: ($listing eq 'rejected') || ($listing eq 'refused') ||
12314: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
12315: $listerror{$tryserver} = $listing;
12316: } else {
12317: foreach my $line (@listing_results) {
12318: my ($entry) = split(/&/,$line,2);
12319: $allusers{$entry} = 1;
12320: }
12321: }
12322: }
12323: my @alluserslist=();
12324: foreach my $user (sort(keys(%allusers))) {
12325: push(@alluserslist,$user.'&user');
12326: }
12327:
12328: if (!%listerror) {
12329: # no errors
12330: return (\@alluserslist);
12331: } elsif (scalar(keys(%servers)) == 1) {
12332: # one library server, one error
12333: my ($key) = keys(%listerror);
12334: return (\@alluserslist, $listerror{$key});
12335: } elsif ( grep { $_ eq 'con_lost' } values(%listerror) ) {
12336: # con_lost indicates that we might miss data from at least one
12337: # library server
12338: return (\@alluserslist, 'con_lost');
12339: } else {
12340: # multiple library servers and no con_lost -> data should be
12341: # complete.
12342: return (\@alluserslist);
12343: }
12344:
12345: } else {
12346: return ([],'missing username');
12347: }
12348: } elsif(!defined($getpropath)) {
12349: my $path = $perlvar{'lonDocRoot'}.'/res/';
12350: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
12351: return (\@all_domains);
12352: } else {
12353: return ([],'missing domain');
12354: }
12355: }
12356:
12357: # --------------------------------------------- GetFileTimestamp
12358: # This function utilizes dirlist and returns the date stamp for
12359: # when it was last modified. It will also return an error of -1
12360: # if an error occurs
12361:
12362: sub GetFileTimestamp {
12363: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
12364: $studentDomain = &LONCAPA::clean_domain($studentDomain);
12365: $studentName = &LONCAPA::clean_username($studentName);
12366: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
12367: undef,$getuserdir);
12368: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
12369: return -1;
12370: }
12371: if (ref($fileref) eq 'ARRAY') {
12372: my @stats = split('&',$fileref->[0]);
12373: # @stats contains first the filename, then the stat output
12374: return $stats[10]; # so this is 10 instead of 9.
12375: } else {
12376: return -1;
12377: }
12378: }
12379:
12380: sub stat_file {
12381: my ($uri) = @_;
12382: $uri = &clutter_with_no_wrapper($uri);
12383:
12384: my ($udom,$uname,$file);
12385: if ($uri =~ m-^/(uploaded|editupload)/-) {
12386: ($udom,$uname,$file) =
12387: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
12388: $file = 'userfiles/'.$file;
12389: }
12390: if ($uri =~ m-^/res/-) {
12391: ($udom,$uname) =
12392: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
12393: $file = $uri;
12394: }
12395:
12396: if (!$udom || !$uname || !$file) {
12397: # unable to handle the uri
12398: return ();
12399: }
12400: my $getpropath;
12401: if ($file =~ /^userfiles\//) {
12402: $getpropath = 1;
12403: }
12404: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
12405: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
12406: return ();
12407: } else {
12408: if (ref($listref) eq 'ARRAY') {
12409: my @stats = split('&',$listref->[0]);
12410: shift(@stats); #filename is first
12411: return @stats;
12412: }
12413: }
12414: return ();
12415: }
12416:
12417: # --------------------------------------------------------- recursedirs
12418: # Recursive function to traverse either a specific user's Authoring Space
12419: # or corresponding Published Resource Space, and populate the hash ref:
12420: # $dirhashref with URLs of all directories, and if $filehashref hash
12421: # ref arg is provided, the URLs of any files, excluding versioned, .meta,
12422: # or .rights files in resource space, and .meta, .save, .log, .bak and
12423: # .rights files in Authoring Space.
12424: #
12425: # Inputs:
12426: #
12427: # $is_home - true if current server is home server for user's space
12428: # $recurse - if true will also traverse subdirectories recursively
12429: # $include - reference to hash containing allowed file extensions. If provided,
12430: # files which do not have a matching extension will be ignored.
12431: # $exclude - reference to hash containing excluded file extensions. If provided,
12432: # files which have a matching extension will be ignored.
12433: # $nonemptydir - if true, will only populate $fileshashref hash entry for a particular
12434: # directory with first file found (with acceptable extension).
12435: # $addtopdir - if true, set $dirhashref->{'/'} = 1
12436: # $toppath - Top level directory (i.e., /res/$dom/$uname or /priv/$dom/$uname
12437: # $relpath - Current path (relative to top level).
12438: # $dirhashref - reference to hash to populate with URLs of directories (Required)
12439: # $filehashref - reference to hash to populate with URLs of files (Optional)
12440: #
12441: # Returns: nothing
12442: #
12443: # Side Effects: populates $dirhashref, and $filehashref (if provided).
12444: #
12445: # Currently used by interface/londocs.pm to create linked select boxes for
12446: # directory and filename to import a Course "Author" resource into a course, and
12447: # also to create linked select boxes for Authoring Space and Directory to choose
12448: # save location for creation of a new "standard" problem from the Course Editor.
12449: #
12450:
12451: sub recursedirs {
12452: my ($is_home,$recurse,$include,$exclude,$nonemptydir,$addtopdir,$toppath,$relpath,$dirhashref,$filehashref) = @_;
12453: return unless (ref($dirhashref) eq 'HASH');
12454: my $docroot = $perlvar{'lonDocRoot'};
12455: my $currpath = $docroot.$toppath;
12456: if ($relpath ne '') {
12457: $currpath .= "/$relpath";
12458: }
12459: my ($savefile,$checkinc,$checkexc);
12460: if (ref($filehashref)) {
12461: $savefile = 1;
12462: }
12463: if (ref($include) eq 'HASH') {
12464: $checkinc = 1;
12465: }
12466: if (ref($exclude) eq 'HASH') {
12467: $checkexc = 1;
12468: }
12469: if ($is_home) {
12470: if ((-e $currpath) && (opendir(my $dirh,$currpath))) {
12471: my $filecount = 0;
12472: foreach my $item (sort { lc($a) cmp lc($b) } grep(!/^\.+$/,readdir($dirh))) {
12473: next if ($item eq '');
12474: if (-d "$currpath/$item") {
12475: my $newpath;
12476: if ($relpath ne '') {
12477: $newpath = "$relpath/$item";
12478: } else {
12479: $newpath = $item;
12480: }
12481: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
12482: if ($recurse) {
12483: &recursedirs($is_home,$recurse,$include,$exclude,$nonemptydir,$addtopdir,$toppath,$newpath,$dirhashref,$filehashref);
12484: }
12485: } elsif (($savefile) || ($relpath eq '')) {
12486: next if ($nonemptydir && $filecount);
12487: if ($checkinc || $checkexc) {
12488: my ($extension) = ($item =~ /\.(\w+)$/);
12489: if ($checkinc) {
12490: next unless ($extension && $include->{$extension});
12491: }
12492: if ($checkexc) {
12493: next if ($extension && $exclude->{$extension});
12494: }
12495: }
12496: if (($relpath eq '') && (!exists($dirhashref->{'/'}))) {
12497: $dirhashref->{'/'} = 1;
12498: }
12499: if ($savefile) {
12500: if ($relpath eq '') {
12501: $filehashref->{'/'}{$item} = 1;
12502: } else {
12503: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
12504: }
12505: }
12506: $filecount ++;
12507: }
12508: }
12509: closedir($dirh);
12510: }
12511: } else {
12512: my ($dirlistref,$listerror) =
12513: &dirlist($toppath.$relpath);
12514: my @dir_lines;
12515: my $dirptr=16384;
12516: if (ref($dirlistref) eq 'ARRAY') {
12517: my $filecount = 0;
12518: foreach my $dir_line (sort
12519: {
12520: my ($afile)=split('&',$a,2);
12521: my ($bfile)=split('&',$b,2);
12522: return (lc($afile) cmp lc($bfile));
12523: } (@{$dirlistref})) {
12524: my ($item,$dom,undef,$testdir,undef,undef,undef,undef,$size,undef,$mtime,undef,undef,undef,$obs,undef) =
12525: split(/\&/,$dir_line,16);
12526: $item =~ s/\s+$//;
12527: next if (($item =~ /^\.\.?$/) || ($obs));
12528: if ($dirptr&$testdir) {
12529: my $newpath;
12530: if ($relpath) {
12531: $newpath = "$relpath/$item";
12532: } else {
12533: $newpath = $item;
12534: }
12535: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
12536: if ($recurse) {
12537: &recursedirs($is_home,$recurse,$include,$exclude,$nonemptydir,$addtopdir,$toppath,$newpath,$dirhashref,$filehashref);
12538: }
12539: } elsif (($savefile) || ($relpath eq '')) {
12540: next if ($nonemptydir && $filecount);
12541: if ($checkinc || $checkexc) {
12542: my $extension;
12543: if ($checkinc) {
12544: next unless ($extension && $include->{$extension});
12545: }
12546: if ($checkexc) {
12547: next if ($extension && $exclude->{$extension});
12548: }
12549: }
12550: if (($relpath eq '') && (!exists($dirhashref->{'/'}))) {
12551: $dirhashref->{'/'} = 1;
12552: }
12553: if ($savefile) {
12554: if ($relpath eq '') {
12555: $filehashref->{'/'}{$item} = 1;
12556: } else {
12557: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
12558: }
12559: }
12560: $filecount ++;
12561: }
12562: }
12563: }
12564: }
12565: if ($addtopdir) {
12566: if (($relpath eq '') && (!exists($dirhashref->{'/'}))) {
12567: $dirhashref->{'/'} = 1;
12568: }
12569: }
12570: return;
12571: }
12572:
12573: sub priv_exclude {
12574: return {
12575: meta => 1,
12576: save => 1,
12577: log => 1,
12578: bak => 1,
12579: rights => 1,
12580: DS_Store => 1,
12581: };
12582: }
12583:
12584: # -------------------------------------------------------- Value of a Condition
12585:
12586: # gets the value of a specific preevaluated condition
12587: # stored in the string $env{user.state.<cid>}
12588: # or looks up a condition reference in the bighash and if if hasn't
12589: # already been evaluated recurses into docondval to get the value of
12590: # the condition, then memoizing it to
12591: # $env{user.state.<cid>.<condition>}
12592: sub directcondval {
12593: my $number=shift;
12594: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
12595: &Apache::lonuserstate::evalstate();
12596: }
12597: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
12598: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
12599: } elsif ($number =~ /^_/) {
12600: my $sub_condition;
12601: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12602: &GDBM_READER(),0640)) {
12603: $sub_condition=$bighash{'conditions'.$number};
12604: untie(%bighash);
12605: }
12606: my $value = &docondval($sub_condition);
12607: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
12608: return $value;
12609: }
12610: if ($env{'user.state.'.$env{'request.course.id'}}) {
12611: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
12612: } else {
12613: return 2;
12614: }
12615: }
12616:
12617: # get the collection of conditions for this resource
12618: sub condval {
12619: my $condidx=shift;
12620: my $allpathcond='';
12621: foreach my $cond (split(/\|/,$condidx)) {
12622: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
12623: $allpathcond.=
12624: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
12625: }
12626: }
12627: $allpathcond=~s/\|$//;
12628: return &docondval($allpathcond);
12629: }
12630:
12631: #evaluates an expression of conditions
12632: sub docondval {
12633: my ($allpathcond) = @_;
12634: my $result=0;
12635: if ($env{'request.course.id'}
12636: && defined($allpathcond)) {
12637: my $operand='|';
12638: my @stack;
12639: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
12640: if ($chunk eq '(') {
12641: push @stack,($operand,$result);
12642: } elsif ($chunk eq ')') {
12643: my $before=pop @stack;
12644: if (pop @stack eq '&') {
12645: $result=$result>$before?$before:$result;
12646: } else {
12647: $result=$result>$before?$result:$before;
12648: }
12649: } elsif (($chunk eq '&') || ($chunk eq '|')) {
12650: $operand=$chunk;
12651: } else {
12652: my $new=directcondval($chunk);
12653: if ($operand eq '&') {
12654: $result=$result>$new?$new:$result;
12655: } else {
12656: $result=$result>$new?$result:$new;
12657: }
12658: }
12659: }
12660: }
12661: return $result;
12662: }
12663:
12664: # ---------------------------------------------------- Devalidate courseresdata
12665:
12666: sub devalidatecourseresdata {
12667: my ($coursenum,$coursedomain)=@_;
12668: my $hashid=$coursenum.':'.$coursedomain;
12669: &devalidate_cache_new('courseres',$hashid);
12670: }
12671:
12672:
12673: # --------------------------------------------------- Course Resourcedata Query
12674: #
12675: # Parameters:
12676: # $coursenum - Number of the course.
12677: # $coursedomain - Domain at which the course was created.
12678: # Returns:
12679: # A hash of the course parameters along (I think) with timestamps
12680: # and version info.
12681:
12682: sub get_courseresdata {
12683: my ($coursenum,$coursedomain)=@_;
12684: my $coursehom=&homeserver($coursenum,$coursedomain);
12685: my $hashid=$coursenum.':'.$coursedomain;
12686: my ($result,$cached)=&is_cached_new('courseres',$hashid);
12687: my %dumpreply;
12688: unless (defined($cached)) {
12689: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
12690: $result=\%dumpreply;
12691: my ($tmp) = keys(%dumpreply);
12692: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
12693: &do_cache_new('courseres',$hashid,$result,600);
12694: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
12695: return $tmp;
12696: } elsif ($tmp =~ /^(error)/) {
12697: $result=undef;
12698: &do_cache_new('courseres',$hashid,$result,600);
12699: }
12700: }
12701: return $result;
12702: }
12703:
12704: sub devalidateuserresdata {
12705: my ($uname,$udom)=@_;
12706: my $hashid="$udom:$uname";
12707: &devalidate_cache_new('userres',$hashid);
12708: }
12709:
12710: sub get_userresdata {
12711: my ($uname,$udom)=@_;
12712: #most student don\'t have any data set, check if there is some data
12713: if (&EXT_cache_status($udom,$uname)) { return undef; }
12714:
12715: my $hashid="$udom:$uname";
12716: my ($result,$cached)=&is_cached_new('userres',$hashid);
12717: if (!defined($cached)) {
12718: my %resourcedata=&dump('resourcedata',$udom,$uname);
12719: $result=\%resourcedata;
12720: &do_cache_new('userres',$hashid,$result,600);
12721: }
12722: my ($tmp)=keys(%$result);
12723: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
12724: return $result;
12725: }
12726: #error 2 occurs when the .db doesn't exist
12727: if ($tmp!~/error: 2 /) {
12728: if ((!defined($cached)) || ($tmp ne 'con_lost')) {
12729: &logthis("<font color=\"blue\">WARNING:".
12730: " Trying to get resource data for ".
12731: $uname." at ".$udom.": ".
12732: $tmp."</font>");
12733: }
12734: } elsif ($tmp=~/error: 2 /) {
12735: #&EXT_cache_set($udom,$uname);
12736: &do_cache_new('userres',$hashid,undef,600);
12737: undef($tmp); # not really an error so don't send it back
12738: }
12739: return $tmp;
12740: }
12741: #----------------------------------------------- resdata - return resource data
12742: # Purpose:
12743: # Return resource data for either users or for a course.
12744: # Parameters:
12745: # $name - Course/user name.
12746: # $domain - Name of the domain the user/course is registered on.
12747: # $type - Type of thing $name is (must be 'course' or 'user')
12748: # $mapp - decluttered URL of enclosing map
12749: # $recursed - Ref to scalar -- set to 1, if nested maps have been recursed.
12750: # $recurseup - Ref to array of map URLs, starting with map containing
12751: # $mapp up through hierarchy of nested maps to top level map.
12752: # $courseid - CourseID (first part of param identifier).
12753: # $modifier - Middle part of param identifier.
12754: # $what - Last part of param identifier.
12755: # @which - Array of names of resources desired.
12756: # Returns:
12757: # The value of the first reasource in @which that is found in the
12758: # resource hash.
12759: # Exceptional Conditions:
12760: # If the $type passed in is not valid (not the string 'course' or
12761: # 'user', an undefined reference is returned.
12762: # If none of the resources are found, an undef is returned
12763: sub resdata {
12764: my ($name,$domain,$type,$mapp,$recursed,$recurseup,$courseid,
12765: $modifier,$what,@which)=@_;
12766: my $result;
12767: if ($type eq 'course') {
12768: $result=&get_courseresdata($name,$domain);
12769: } elsif ($type eq 'user') {
12770: $result=&get_userresdata($name,$domain);
12771: }
12772: if (!ref($result)) { return $result; }
12773: foreach my $item (@which) {
12774: if ($item->[1] eq 'course') {
12775: if ((ref($recurseup) eq 'ARRAY') && (ref($recursed) eq 'SCALAR')) {
12776: unless ($$recursed) {
12777: @{$recurseup} = &get_map_hierarchy($mapp,$courseid);
12778: $$recursed = 1;
12779: }
12780: foreach my $item (@${recurseup}) {
12781: my $norecursechk=$courseid.$modifier.$item.'___(all).'.$what;
12782: last if (defined($result->{$norecursechk}));
12783: my $recursechk=$courseid.$modifier.$item.'___(rec).'.$what;
12784: if (defined($result->{$recursechk})) { return [$result->{$recursechk},'map']; }
12785: }
12786: }
12787: }
12788: if (defined($result->{$item->[0]})) {
12789: return [$result->{$item->[0]},$item->[1]];
12790: }
12791: }
12792: return undef;
12793: }
12794:
12795: sub get_domain_lti {
12796: my ($cdom,$context) = @_;
12797: my ($name,$cachename,%lti);
12798: if ($context eq 'consumer') {
12799: $name = 'ltitools';
12800: } elsif ($context eq 'provider') {
12801: $name = 'lti';
12802: } elsif ($context eq 'linkprot') {
12803: $name = 'ltisec';
12804: } else {
12805: return %lti;
12806: }
12807: if ($context eq 'linkprot') {
12808: $cachename = $context;
12809: } else {
12810: $cachename = $name;
12811: }
12812: my ($result,$cached)=&is_cached_new($cachename,$cdom);
12813: if (defined($cached)) {
12814: if (ref($result) eq 'HASH') {
12815: %lti = %{$result};
12816: }
12817: } else {
12818: my %domconfig = &get_dom('configuration',[$name],$cdom);
12819: if (ref($domconfig{$name}) eq 'HASH') {
12820: if ($context eq 'linkprot') {
12821: if (ref($domconfig{$name}{'linkprot'}) eq 'HASH') {
12822: %lti = %{$domconfig{$name}{'linkprot'}};
12823: }
12824: } else {
12825: %lti = %{$domconfig{$name}};
12826: }
12827: }
12828: my $cachetime = 24*60*60;
12829: &do_cache_new($cachename,$cdom,\%lti,$cachetime);
12830: }
12831: return %lti;
12832: }
12833:
12834: sub get_course_lti {
12835: my ($cnum,$cdom,$context) = @_;
12836: my ($name,$cachename,%lti);
12837: if ($context eq 'consumer') {
12838: $name = 'ltitools';
12839: $cachename = 'courseltitools';
12840: } elsif ($context eq 'provider') {
12841: $name = 'lti';
12842: $cachename = 'courselti';
12843: } else {
12844: return %lti;
12845: }
12846: my $hashid=$cdom.'_'.$cnum;
12847: my ($result,$cached)=&is_cached_new($cachename,$hashid);
12848: if (defined($cached)) {
12849: if (ref($result) eq 'HASH') {
12850: %lti = %{$result};
12851: }
12852: } else {
12853: %lti = &dump($name,$cdom,$cnum,undef,undef,undef,1);
12854: my $cachetime = 24*60*60;
12855: &do_cache_new($cachename,$hashid,\%lti,$cachetime);
12856: }
12857: return %lti;
12858: }
12859:
12860: sub courselti_itemid {
12861: my ($cnum,$cdom,$url,$method,$params,$context) = @_;
12862: my ($chome,$itemid);
12863: $chome = &homeserver($cnum,$cdom);
12864: return if ($chome eq 'no_host');
12865: if (ref($params) eq 'HASH') {
12866: my $rep;
12867: if (grep { $_ eq $chome } current_machine_ids()) {
12868: $rep = LONCAPA::Lond::crslti_itemid($cdom,$cnum,$url,$method,$params,$perlvar{'lonVersion'});
12869: } else {
12870: my $escurl = &escape($url);
12871: my $escmethod = &escape($method);
12872: my $items = &freeze_escape($params);
12873: $rep = &reply("encrypt:lti:$cdom:$cnum:$context:$escurl:$escmethod:$items",$chome);
12874: }
12875: unless (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
12876: ($rep eq 'unknown_cmd')) {
12877: $itemid = $rep;
12878: }
12879: }
12880: return $itemid;
12881: }
12882:
12883: sub domainlti_itemid {
12884: my ($cdom,$url,$method,$params,$context) = @_;
12885: my ($primary_id,$itemid);
12886: $primary_id = &domain($cdom,'primary');
12887: return if ($primary_id eq '');
12888: if (ref($params) eq 'HASH') {
12889: my $rep;
12890: if (grep { $_ eq $primary_id } current_machine_ids()) {
12891: $rep = LONCAPA::Lond::domlti_itemid($cdom,$context,$url,$method,$params,$perlvar{'lonVersion'});
12892: } else {
12893: my $cnum = '';
12894: my $escurl = &escape($url);
12895: my $escmethod = &escape($method);
12896: my $items = &freeze_escape($params);
12897: $rep = &reply("encrypt:lti:$cdom:$cnum:$context:$escurl:$escmethod:$items",$primary_id);
12898: }
12899: unless (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
12900: ($rep eq 'unknown_cmd')) {
12901: $itemid = $rep;
12902: }
12903: }
12904: return $itemid;
12905: }
12906:
12907: sub get_ltitools_id {
12908: my ($context,$cdom,$cnum,$title) = @_;
12909: my ($lockhash,$tries,$gotlock,$id,$error);
12910:
12911: # get lock on ltitools db
12912: $lockhash = {
12913: lock => $env{'user.name'}.
12914: ':'.$env{'user.domain'},
12915: };
12916: $tries = 0;
12917: if ($context eq 'domain') {
12918: $gotlock = &newput_dom('ltitools',$lockhash,$cdom);
12919: } else {
12920: $gotlock = &newput('ltitools',$lockhash,$cdom,$cnum);
12921: }
12922: while (($gotlock ne 'ok') && ($tries<10)) {
12923: $tries ++;
12924: sleep (0.1);
12925: if ($context eq 'domain') {
12926: $gotlock = &newput_dom('ltitools',$lockhash,$cdom);
12927: } else {
12928: $gotlock = &newput('ltitools',$lockhash,$cdom,$cnum);
12929: }
12930: }
12931: if ($gotlock eq 'ok') {
12932: my %currids;
12933: if ($context eq 'domain') {
12934: %currids = &dump_dom('ltitools',$cdom);
12935: } else {
12936: %currids = &dump('ltitools',$cdom,$cnum);
12937: }
12938: if ($currids{'lock'}) {
12939: delete($currids{'lock'});
12940: if (keys(%currids)) {
12941: my @curr = sort { $a <=> $b } keys(%currids);
12942: if ($curr[-1] =~ /^\d+$/) {
12943: $id = 1 + $curr[-1];
12944: }
12945: } else {
12946: $id = 1;
12947: }
12948: if ($id) {
12949: if ($context eq 'domain') {
12950: unless (&newput_dom('ltitools',{ $id => $title },$cdom) eq 'ok') {
12951: $error = 'nostore';
12952: }
12953: } else {
12954: unless (&newput('ltitools',{ $id => $title },$cdom,$cnum) eq 'ok') {
12955: $error = 'nostore';
12956: }
12957: }
12958: } else {
12959: $error = 'nonumber';
12960: }
12961: }
12962: my $dellockoutcome;
12963: if ($context eq 'domain') {
12964: $dellockoutcome = &del_dom('ltitools',['lock'],$cdom);
12965: } else {
12966: $dellockoutcome = &del('ltitools',['lock'],$cdom,$cnum);
12967: }
12968: } else {
12969: $error = 'nolock';
12970: }
12971: return ($id,$error);
12972: }
12973:
12974: sub count_supptools {
12975: my ($cnum,$cdom,$ignorecache,$reload)=@_;
12976: my $hashid=$cnum.':'.$cdom;
12977: my ($numexttools,$cached);
12978: unless ($ignorecache) {
12979: ($numexttools,$cached) = &is_cached_new('supptools',$hashid);
12980: }
12981: unless (defined($cached)) {
12982: my $chome=&homeserver($cnum,$cdom);
12983: $numexttools = 0;
12984: unless ($chome eq 'no_host') {
12985: my ($supplemental) = &Apache::loncommon::get_supplemental($cnum,$cdom,$reload);
12986: if (ref($supplemental) eq 'HASH') {
12987: if ((ref($supplemental->{'ids'}) eq 'HASH') && (ref($supplemental->{'hidden'}) eq 'HASH')) {
12988: foreach my $key (keys(%{$supplemental->{'ids'}})) {
12989: if ($key =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}) {
12990: $numexttools ++;
12991: }
12992: }
12993: }
12994: }
12995: }
12996: &do_cache_new('supptools',$hashid,$numexttools,600);
12997: }
12998: return $numexttools;
12999: }
13000:
13001: sub has_unhidden_suppfiles {
13002: my ($cnum,$cdom,$ignorecache,$possdel)=@_;
13003: my $hashid=$cnum.':'.$cdom;
13004: my ($showsupp,$cached);
13005: unless ($ignorecache) {
13006: ($showsupp,$cached) = &is_cached_new('showsupp',$hashid);
13007: }
13008: unless (defined($cached)) {
13009: my $chome=&homeserver($cnum,$cdom);
13010: unless ($chome eq 'no_host') {
13011: my ($supplemental) = &Apache::loncommon::get_supplemental($cnum,$cdom,$ignorecache,$possdel);
13012: if (ref($supplemental) eq 'HASH') {
13013: if ((ref($supplemental->{'ids'}) eq 'HASH') && (ref($supplemental->{'hidden'}) eq 'HASH')) {
13014: foreach my $key (keys(%{$supplemental->{'ids'}})) {
13015: next if ($key =~ /\.sequence$/);
13016: if (ref($supplemental->{'ids'}->{$key}) eq 'ARRAY') {
13017: foreach my $id (@{$supplemental->{'ids'}->{$key}}) {
13018: unless ($supplemental->{'hidden'}->{$id}) {
13019: $showsupp = 1;
13020: last;
13021: }
13022: }
13023: }
13024: last if ($showsupp);
13025: }
13026: }
13027: }
13028: }
13029: &do_cache_new('showsupp',$hashid,$showsupp,600);
13030: }
13031: return $showsupp;
13032: }
13033:
13034: #
13035: # EXT resource caching routines
13036: #
13037:
13038: {
13039: # Cache (5 seconds) of map hierarchy for speedup of navmaps display
13040: #
13041: # The course for which we cache
13042: my $cachedmapkey='';
13043: # The cached recursive maps for this course
13044: my %cachedmaps=();
13045: # When this was last done
13046: my $cachedmaptime='';
13047:
13048: sub clear_EXT_cache_status {
13049: &delenv('cache.EXT.');
13050: }
13051:
13052: sub EXT_cache_status {
13053: my ($target_domain,$target_user) = @_;
13054: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
13055: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
13056: # We know already the user has no data
13057: return 1;
13058: } else {
13059: return 0;
13060: }
13061: }
13062:
13063: sub EXT_cache_set {
13064: my ($target_domain,$target_user) = @_;
13065: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
13066: #&appenv({$cachename => time});
13067: }
13068:
13069: # --------------------------------------------------------- Value of a Variable
13070: sub EXT {
13071:
13072: my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid,$recurseupref)=@_;
13073: unless ($varname) { return ''; }
13074: #get real user name/domain, courseid and symb
13075: my $courseid;
13076: my $publicuser;
13077: if ($symbparm) {
13078: $symbparm=&get_symb_from_alias($symbparm);
13079: }
13080: if (!($uname && $udom)) {
13081: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
13082: if (!$symbparm) { $symbparm=$cursymb; }
13083: } else {
13084: $courseid=$env{'request.course.id'};
13085: }
13086: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
13087: my $rest;
13088: if (defined($therest[0])) {
13089: $rest=join('.',@therest);
13090: } else {
13091: $rest='';
13092: }
13093:
13094: my $qualifierrest=$qualifier;
13095: if ($rest) { $qualifierrest.='.'.$rest; }
13096: my $spacequalifierrest=$space;
13097: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
13098: if ($realm eq 'user') {
13099: # --------------------------------------------------------------- user.resource
13100: if ($space eq 'resource') {
13101: if ( (defined($Apache::lonhomework::parsing_a_problem)
13102: || defined($Apache::lonhomework::parsing_a_task))
13103: &&
13104: ($symbparm eq &symbread()) ) {
13105: # if we are in the middle of processing the resource the
13106: # get the value we are planning on committing
13107: if (defined($Apache::lonhomework::results{$qualifierrest})) {
13108: return $Apache::lonhomework::results{$qualifierrest};
13109: } else {
13110: return $Apache::lonhomework::history{$qualifierrest};
13111: }
13112: } else {
13113: my %restored;
13114: if ($publicuser || $env{'request.state'} eq 'construct') {
13115: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
13116: } else {
13117: %restored=&restore($symbparm,$courseid,$udom,$uname);
13118: }
13119: return $restored{$qualifierrest};
13120: }
13121: # ----------------------------------------------------------------- user.access
13122: } elsif ($space eq 'access') {
13123: # FIXME - not supporting calls for a specific user
13124: return &allowed($qualifier,$rest);
13125: # ------------------------------------------ user.preferences, user.environment
13126: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
13127: if (($uname eq $env{'user.name'}) &&
13128: ($udom eq $env{'user.domain'})) {
13129: return $env{join('.',('environment',$qualifierrest))};
13130: } else {
13131: my %returnhash;
13132: if (!$publicuser) {
13133: %returnhash=&userenvironment($udom,$uname,
13134: $qualifierrest);
13135: }
13136: return $returnhash{$qualifierrest};
13137: }
13138: # ----------------------------------------------------------------- user.course
13139: } elsif ($space eq 'course') {
13140: # FIXME - not supporting calls for a specific user
13141: return $env{join('.',('request.course',$qualifier))};
13142: # ------------------------------------------------------------------- user.role
13143: } elsif ($space eq 'role') {
13144: # FIXME - not supporting calls for a specific user
13145: my ($role,$where)=split(/\./,$env{'request.role'});
13146: if ($qualifier eq 'value') {
13147: return $role;
13148: } elsif ($qualifier eq 'extent') {
13149: return $where;
13150: }
13151: # ----------------------------------------------------------------- user.domain
13152: } elsif ($space eq 'domain') {
13153: return $udom;
13154: # ------------------------------------------------------------------- user.name
13155: } elsif ($space eq 'name') {
13156: return $uname;
13157: # ---------------------------------------------------- Any other user namespace
13158: } else {
13159: my %reply;
13160: if (!$publicuser) {
13161: %reply=&get($space,[$qualifierrest],$udom,$uname);
13162: }
13163: return $reply{$qualifierrest};
13164: }
13165: } elsif ($realm eq 'query') {
13166: # ---------------------------------------------- pull stuff out of query string
13167: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
13168: [$spacequalifierrest]);
13169: return $env{'form.'.$spacequalifierrest};
13170: } elsif ($realm eq 'request') {
13171: # ------------------------------------------------------------- request.browser
13172: if ($space eq 'browser') {
13173: return $env{'browser.'.$qualifier};
13174: # ------------------------------------------------------------ request.filename
13175: } else {
13176: return $env{'request.'.$spacequalifierrest};
13177: }
13178: } elsif ($realm eq 'course') {
13179: # ---------------------------------------------------------- course.description
13180: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
13181: } elsif ($realm eq 'resource') {
13182:
13183: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
13184: if (!$symbparm) { $symbparm=&symbread(); }
13185: }
13186:
13187: if ($qualifier eq '') {
13188: if ($space eq 'title') {
13189: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
13190: return &gettitle($symbparm);
13191: }
13192:
13193: if ($space eq 'map') {
13194: my ($map) = &decode_symb($symbparm);
13195: return &symbread($map);
13196: }
13197: if ($space eq 'maptitle') {
13198: my ($map) = &decode_symb($symbparm);
13199: return &gettitle($map);
13200: }
13201: if ($space eq 'filename') {
13202: if ($symbparm) {
13203: return &clutter((&decode_symb($symbparm))[2]);
13204: }
13205: return &hreflocation('',$env{'request.filename'});
13206: }
13207:
13208: if ((defined($courseid)) && ($courseid eq $env{'request.course.id'}) && $symbparm) {
13209: if ($space eq 'visibleparts') {
13210: my $navmap = Apache::lonnavmaps::navmap->new();
13211: my $item;
13212: if (ref($navmap)) {
13213: my $res = $navmap->getBySymb($symbparm);
13214: my $parts = $res->parts();
13215: if (ref($parts) eq 'ARRAY') {
13216: $item = join(',',@{$parts});
13217: }
13218: undef($navmap);
13219: }
13220: return $item;
13221: }
13222: }
13223: }
13224:
13225: my ($section, $group, @groups, @recurseup, $recursed);
13226: if (ref($recurseupref) eq 'ARRAY') {
13227: @recurseup = @{$recurseupref};
13228: $recursed = 1;
13229: }
13230: my ($courselevelm,$courseleveli,$courselevel,$mapp);
13231: if (($courseid eq '') && ($cid)) {
13232: $courseid = $cid;
13233: }
13234: if (($symbparm && $courseid) &&
13235: (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid))) {
13236:
13237: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
13238:
13239: # ----------------------------------------------------- Cascading lookup scheme
13240: my $symbp=$symbparm;
13241: $mapp=&deversion((&decode_symb($symbp))[0]);
13242: my $symbparm=$symbp.'.'.$spacequalifierrest;
13243: my $recurseparm=$mapp.'___(rec).'.$spacequalifierrest;
13244: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
13245: if (($env{'user.name'} eq $uname) &&
13246: ($env{'user.domain'} eq $udom)) {
13247: $section=$env{'request.course.sec'};
13248: @groups = split(/:/,$env{'request.course.groups'});
13249: @groups=&sort_course_groups($courseid,@groups);
13250: } else {
13251: if (! defined($usection)) {
13252: $section=&getsection($udom,$uname,$courseid);
13253: } else {
13254: $section = $usection;
13255: }
13256: @groups = &get_users_groups($udom,$uname,$courseid);
13257: }
13258:
13259: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
13260: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
13261: my $secleveli=$courseid.'.['.$section.'].'.$recurseparm;
13262: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
13263:
13264: $courselevel=$courseid.'.'.$spacequalifierrest;
13265: my $courselevelr=$courseid.'.'.$symbparm;
13266: $courseleveli=$courseid.'.'.$recurseparm;
13267: $courselevelm=$courseid.'.'.$mapparm;
13268:
13269: # ----------------------------------------------------------- first, check user
13270:
13271: my $userreply=&resdata($uname,$udom,'user',$mapp,\$recursed,
13272: \@recurseup,$courseid,'.',$spacequalifierrest,
13273: ([$courselevelr,'resource'],
13274: [$courselevelm,'map' ],
13275: [$courseleveli,'map' ],
13276: [$courselevel, 'course' ]));
13277: if (defined($userreply)) { return &get_reply($userreply); }
13278:
13279: # ------------------------------------------------ second, check some of course
13280: my $coursereply;
13281: if (@groups > 0) {
13282: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
13283: $recurseparm,$mapparm,$spacequalifierrest,
13284: $mapp,\$recursed,\@recurseup);
13285: if (defined($coursereply)) { return &get_reply($coursereply); }
13286: }
13287:
13288: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
13289: $env{'course.'.$courseid.'.domain'},
13290: 'course',$mapp,\$recursed,\@recurseup,
13291: $courseid,'.['.$section.'].',$spacequalifierrest,
13292: ([$seclevelr, 'resource'],
13293: [$seclevelm, 'map' ],
13294: [$secleveli, 'map' ],
13295: [$seclevel, 'course' ],
13296: [$courselevelr,'resource']));
13297: if (defined($coursereply)) { return &get_reply($coursereply); }
13298:
13299: # ------------------------------------------------------ third, check map parms
13300: my %parmhash=();
13301: my $thisparm='';
13302: if (tie(%parmhash,'GDBM_File',
13303: $env{'request.course.fn'}.'_parms.db',
13304: &GDBM_READER(),0640)) {
13305: $thisparm=$parmhash{$symbparm};
13306: untie(%parmhash);
13307: }
13308: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
13309: }
13310: # ------------------------------------------ fourth, look in resource metadata
13311:
13312: my $what = $spacequalifierrest;
13313: $what=~s/\./\_/;
13314: my $filename;
13315: if (!$symbparm) { $symbparm=&symbread(); }
13316: if ($symbparm) {
13317: $filename=(&decode_symb($symbparm))[2];
13318: } else {
13319: $filename=$env{'request.filename'};
13320: }
13321: my $toolsymb;
13322: if (($filename =~ /ext\.tool$/) && ($what ne '0_gradable')) {
13323: $toolsymb = $symbparm;
13324: }
13325: my $metadata=&metadata($filename,$what,$toolsymb);
13326: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
13327: $metadata=&metadata($filename,'parameter_'.$what,$toolsymb);
13328: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
13329:
13330: # ----------------------------------------------- fifth, look in rest of course
13331: if ($symbparm && defined($courseid) &&
13332: $courseid eq $env{'request.course.id'}) {
13333: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
13334: $env{'course.'.$courseid.'.domain'},
13335: 'course',$mapp,\$recursed,\@recurseup,
13336: $courseid,'.',$spacequalifierrest,
13337: ([$courselevelm,'map' ],
13338: [$courseleveli,'map' ],
13339: [$courselevel, 'course']));
13340: if (defined($coursereply)) { return &get_reply($coursereply); }
13341: }
13342: # ------------------------------------------------------------------ Cascade up
13343: unless ($space eq '0') {
13344: my @parts=split(/_/,$space);
13345: my $id=pop(@parts);
13346: my $part=join('_',@parts);
13347: if ($part eq '') { $part='0'; }
13348: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
13349: $symbparm,$udom,$uname,$section,1);
13350: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
13351: }
13352: if ($recurse) { return undef; }
13353: my $pack_def=&packages_tab_default($filename,$varname,$toolsymb);
13354: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
13355: # ---------------------------------------------------- Any other user namespace
13356: } elsif ($realm eq 'environment') {
13357: # ----------------------------------------------------------------- environment
13358: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
13359: return $env{'environment.'.$spacequalifierrest};
13360: } else {
13361: if ($uname eq 'anonymous' && $udom eq '') {
13362: return '';
13363: }
13364: my %returnhash=&userenvironment($udom,$uname,
13365: $spacequalifierrest);
13366: return $returnhash{$spacequalifierrest};
13367: }
13368: } elsif ($realm eq 'system') {
13369: # ----------------------------------------------------------------- system.time
13370: if ($space eq 'time') {
13371: return time;
13372: }
13373: } elsif ($realm eq 'server') {
13374: # ----------------------------------------------------------------- system.time
13375: if ($space eq 'name') {
13376: return $ENV{'SERVER_NAME'};
13377: }
13378: } elsif ($realm eq 'client') {
13379: if ($space eq 'remote_addr') {
13380: return &get_requestor_ip();
13381: }
13382: }
13383: return '';
13384: }
13385:
13386: sub get_reply {
13387: my ($reply_value) = @_;
13388: if (ref($reply_value) eq 'ARRAY') {
13389: if (wantarray) {
13390: return @$reply_value;
13391: }
13392: return $reply_value->[0];
13393: } else {
13394: return $reply_value;
13395: }
13396: }
13397:
13398: sub check_group_parms {
13399: my ($courseid,$groups,$symbparm,$recurseparm,$mapparm,$what,$mapp,
13400: $recursed,$recurseupref) = @_;
13401: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$recurseparm,'map'],
13402: [$what,'course']);
13403: my $coursereply;
13404: foreach my $group (@{$groups}) {
13405: my @groupitems = ();
13406: foreach my $level (@levels) {
13407: my $item = $courseid.'.['.$group.'].'.$level->[0];
13408: push(@groupitems,[$item,$level->[1]]);
13409: }
13410: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
13411: $env{'course.'.$courseid.'.domain'},
13412: 'course',$mapp,$recursed,$recurseupref,
13413: $courseid,'.['.$group.'].',$what,
13414: @groupitems);
13415: last if (defined($coursereply));
13416: }
13417: return $coursereply;
13418: }
13419:
13420: sub get_map_hierarchy {
13421: my ($mapname,$courseid) = @_;
13422: my @recurseup = ();
13423: if ($mapname) {
13424: if (($cachedmapkey eq $courseid) &&
13425: (abs($cachedmaptime-time)<5)) {
13426: if (ref($cachedmaps{$mapname}) eq 'ARRAY') {
13427: return @{$cachedmaps{$mapname}};
13428: }
13429: }
13430: my $navmap = Apache::lonnavmaps::navmap->new();
13431: if (ref($navmap)) {
13432: @recurseup = $navmap->recurseup_maps($mapname);
13433: undef($navmap);
13434: $cachedmaps{$mapname} = \@recurseup;
13435: $cachedmaptime=time;
13436: $cachedmapkey=$courseid;
13437: }
13438: }
13439: return @recurseup;
13440: }
13441:
13442: }
13443:
13444: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
13445: my ($courseid,@groups) = @_;
13446: @groups = sort(@groups);
13447: return @groups;
13448: }
13449:
13450: sub packages_tab_default {
13451: my ($uri,$varname,$toolsymb)=@_;
13452: my (undef,$part,$name)=split(/\./,$varname);
13453:
13454: my (@extension,@specifics,$do_default);
13455: foreach my $package (split(/,/,&metadata($uri,'packages',$toolsymb))) {
13456: my ($pack_type,$pack_part)=split(/_/,$package,2);
13457: if ($pack_type eq 'default') {
13458: $do_default=1;
13459: } elsif ($pack_type eq 'extension') {
13460: push(@extension,[$package,$pack_type,$pack_part]);
13461: } elsif ($pack_part eq $part || $pack_type eq 'part') {
13462: # only look at packages defaults for packages that this id is
13463: push(@specifics,[$package,$pack_type,$pack_part]);
13464: }
13465: }
13466: # first look for a package that matches the requested part id
13467: foreach my $package (@specifics) {
13468: my (undef,$pack_type,$pack_part)=@{$package};
13469: next if ($pack_part ne $part);
13470: if (defined($packagetab{"$pack_type&$name&default"})) {
13471: return $packagetab{"$pack_type&$name&default"};
13472: }
13473: }
13474: # look for any possible matching non extension_ package
13475: foreach my $package (@specifics) {
13476: my (undef,$pack_type,$pack_part)=@{$package};
13477: if (defined($packagetab{"$pack_type&$name&default"})) {
13478: return $packagetab{"$pack_type&$name&default"};
13479: }
13480: if ($pack_type eq 'part') { $pack_part='0'; }
13481: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
13482: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
13483: }
13484: }
13485: # look for any posible extension_ match
13486: foreach my $package (@extension) {
13487: my ($package,$pack_type)=@{$package};
13488: if (defined($packagetab{"$pack_type&$name&default"})) {
13489: return $packagetab{"$pack_type&$name&default"};
13490: }
13491: if (defined($packagetab{$package."&$name&default"})) {
13492: return $packagetab{$package."&$name&default"};
13493: }
13494: }
13495: # look for a global default setting
13496: if ($do_default && defined($packagetab{"default&$name&default"})) {
13497: return $packagetab{"default&$name&default"};
13498: }
13499: return undef;
13500: }
13501:
13502: sub add_prefix_and_part {
13503: my ($prefix,$part)=@_;
13504: my $keyroot;
13505: if (defined($prefix) && $prefix !~ /^__/) {
13506: # prefix that has a part already
13507: $keyroot=$prefix;
13508: } elsif (defined($prefix)) {
13509: # prefix that is missing a part
13510: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
13511: } else {
13512: # no prefix at all
13513: if (defined($part)) { $keyroot='_'.$part; }
13514: }
13515: return $keyroot;
13516: }
13517:
13518: # ---------------------------------------------------------------- Get metadata
13519:
13520: my %metaentry;
13521: my %importedpartids;
13522: my %importedrespids;
13523: sub metadata {
13524: my ($uri,$what,$toolsymb,$liburi,$prefix,$depthcount)=@_;
13525: $uri=&declutter($uri);
13526: # if it is a non metadata possible uri return quickly
13527: if (($uri eq '') ||
13528: (($uri =~ m|^/*adm/|) &&
13529: ($uri !~ m|^adm/includes|) && ($uri !~ m{/(smppg|bulletinboard|ext\.tool)$})) ||
13530: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
13531: return undef;
13532: }
13533: if (($uri =~ /^priv/ || $uri=~m{^home/httpd/html/priv})
13534: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
13535: return undef;
13536: }
13537: my $filename=$uri;
13538: $uri=~s/\.meta$//;
13539: #
13540: # Is the metadata already cached?
13541: # Look at timestamp of caching
13542: # Everything is cached by the main uri, libraries are never directly cached
13543: #
13544: if (!defined($liburi)) {
13545: my ($result,$cached)=&is_cached_new('meta',$uri);
13546: if (defined($cached)) { return $result->{':'.$what}; }
13547: }
13548:
13549: #
13550: # If the uri is for an external tool the file from
13551: # which metadata should be retrieved depends on whether
13552: # the tool had been configured to be gradable (set in the Course
13553: # Editor or Resource Editor).
13554: #
13555: # If a valid symb has been included as the third arg in the call
13556: # to &metadata() that can be used to retrieve the value of
13557: # parameter_0_gradable set for the resource, and included in the
13558: # uploaded map containing the tool. The value is retrieved via
13559: # &EXT(), if a valid symb is available. Otherwise the value of
13560: # gradable in the exttool_$marker.db file for the tool instance
13561: # is retrieved via &get().
13562: #
13563: # When lonuserstate::traceroute() calls lonnet::EXT() for
13564: # hiddenresource and encrypturl (during course initialization)
13565: # the map-level parameter for resource.0.gradable included in the
13566: # uploaded map containing the tool will not yet have been stored
13567: # in the user_course_parms.db file for the user's session, so in
13568: # this case fall back to retrieving gradable status from the
13569: # exttool_$marker.db file.
13570: #
13571: # In order to avoid an infinite loop, &metadata() will return
13572: # before a call to &EXT(), if the uri is for an external tool
13573: # and the $what for which metadata is being requested is
13574: # parameter_0_gradable or 0_gradable.
13575: #
13576:
13577: if ($uri =~ /ext\.tool$/) {
13578: if (($what eq 'parameter_0_gradable') || ($what eq '0_gradable')) {
13579: return;
13580: } else {
13581: my ($checked,$use_passback);
13582: if ($toolsymb ne '') {
13583: (undef,undef,my $tooluri) = &decode_symb($toolsymb);
13584: if (($tooluri eq $uri) && (&EXT('resource.0.gradable',$toolsymb))) {
13585: $checked = 1;
13586: if (&EXT('resource.0.gradable',$toolsymb) =~ /^yes$/i) {
13587: $use_passback = 1;
13588: }
13589: }
13590: }
13591: unless ($checked) {
13592: my ($ignore,$cdom,$cnum,$marker) = split(m{/},$uri);
13593: $marker=~s/\D//g;
13594: if ($marker) {
13595: my %toolsettings=&get('exttool_'.$marker,['gradable'],$cdom,$cnum);
13596: $use_passback = $toolsettings{'gradable'};
13597: }
13598: }
13599: if ($use_passback) {
13600: $filename = '/home/httpd/html/res/lib/templates/LTIpassback.tool';
13601: } else {
13602: $filename = '/home/httpd/html/res/lib/templates/LTIstandard.tool';
13603: }
13604: }
13605: }
13606:
13607: {
13608: # Imported parts would go here
13609: my @origfiletagids=();
13610: my $importedparts=0;
13611:
13612: # Imported responseids would go here
13613: my $importedresponses=0;
13614: #
13615: # Is this a recursive call for a library?
13616: #
13617: # if (! exists($metacache{$uri})) {
13618: # $metacache{$uri}={};
13619: # }
13620: my $cachetime = 60*60;
13621: if ($liburi) {
13622: $liburi=&declutter($liburi);
13623: $filename=$liburi;
13624: } else {
13625: &devalidate_cache_new('meta',$uri);
13626: undef(%metaentry);
13627: }
13628: my %metathesekeys=();
13629: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
13630: my $metastring;
13631: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
13632: my $which = &hreflocation('','/'.($liburi || $uri));
13633: $metastring =
13634: &Apache::lonnet::ssi_body($which,
13635: ('grade_target' => 'meta'));
13636: $cachetime = 1; # only want this cached in the child not long term
13637: } elsif (($uri !~ m -^(editupload)/-) &&
13638: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
13639: my $file=&filelocation('',&clutter($filename));
13640: #push(@{$metaentry{$uri.'.file'}},$file);
13641: $metastring=&getfile($file);
13642: }
13643: my $parser=HTML::LCParser->new(\$metastring);
13644: my $token;
13645: undef %metathesekeys;
13646: while ($token=$parser->get_token) {
13647: if ($token->[0] eq 'S') {
13648: if (defined($token->[2]->{'package'})) {
13649: #
13650: # This is a package - get package info
13651: #
13652: my $package=$token->[2]->{'package'};
13653: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
13654: if (defined($token->[2]->{'id'})) {
13655: $keyroot.='_'.$token->[2]->{'id'};
13656: }
13657: if ($metaentry{':packages'}) {
13658: $metaentry{':packages'}.=','.$package.$keyroot;
13659: } else {
13660: $metaentry{':packages'}=$package.$keyroot;
13661: }
13662: foreach my $pack_entry (keys(%packagetab)) {
13663: my $part=$keyroot;
13664: $part=~s/^\_//;
13665: if ($pack_entry=~/^\Q$package\E\&/ ||
13666: $pack_entry=~/^\Q$package\E_0\&/) {
13667: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
13668: # ignore package.tab specified default values
13669: # here &package_tab_default() will fetch those
13670: if ($subp eq 'default') { next; }
13671: my $value=$packagetab{$pack_entry};
13672: my $unikey;
13673: if ($pack =~ /_0$/) {
13674: $unikey='parameter_0_'.$name;
13675: $part=0;
13676: } else {
13677: $unikey='parameter'.$keyroot.'_'.$name;
13678: }
13679: if ($subp eq 'display') {
13680: $value.=' [Part: '.$part.']';
13681: }
13682: $metaentry{':'.$unikey.'.part'}=$part;
13683: $metathesekeys{$unikey}=1;
13684: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
13685: $metaentry{':'.$unikey.'.'.$subp}=$value;
13686: }
13687: if (defined($metaentry{':'.$unikey.'.default'})) {
13688: $metaentry{':'.$unikey}=
13689: $metaentry{':'.$unikey.'.default'};
13690: }
13691: }
13692: }
13693: } else {
13694: #
13695: # This is not a package - some other kind of start tag
13696: #
13697: my $entry=$token->[1];
13698: my $unikey='';
13699:
13700: if ($entry eq 'import') {
13701: #
13702: # Importing a library here
13703: #
13704: my $location=$parser->get_text('/import');
13705: my $dir=$filename;
13706: $dir=~s|[^/]*$||;
13707: $location=&filelocation($dir,$location);
13708:
13709: my $importid=$token->[2]->{'id'};
13710: my $importmode=$token->[2]->{'importmode'};
13711: #
13712: # Check metadata for imported file to
13713: # see if it contained response items
13714: #
13715: my ($origfile,@libfilekeys);
13716: my %currmetaentry = %metaentry;
13717: @libfilekeys = split(/,/,&metadata($location,'keys',undef,undef,undef,
13718: $depthcount+1));
13719: if (grep(/^responseorder$/,@libfilekeys)) {
13720: my $libresponseorder = &metadata($location,'responseorder',undef,undef,
13721: undef,$depthcount+1);
13722: if ($libresponseorder ne '') {
13723: if ($#origfiletagids<0) {
13724: undef(%importedrespids);
13725: undef(%importedpartids);
13726: }
13727: my @respids = split(/\s*,\s*/,$libresponseorder);
13728: if (@respids) {
13729: $importedrespids{$importid} = join(',',map { $importid.'_'.$_ } @respids);
13730: }
13731: if ($importedrespids{$importid} ne '') {
13732: $importedresponses = 1;
13733: # We need to get the original file and the imported file to get the response order correct
13734: # Load and inspect original file
13735: if ($#origfiletagids<0) {
13736: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
13737: $origfile=&getfile($origfilelocation);
13738: @origfiletagids=($origfile=~/<((?:\w+)response|import|part)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
13739: }
13740: }
13741: }
13742: }
13743: # Do not overwrite contents of %metaentry hash for resource itself with
13744: # hash populated for imported library file
13745: %metaentry = %currmetaentry;
13746: undef(%currmetaentry);
13747: if ($importmode eq 'part') {
13748: # Import as part(s)
13749: $importedparts=1;
13750: # We need to get the original file and the imported file to get the part order correct
13751: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
13752: # Load and inspect original file if we didn't do that already
13753: if ($#origfiletagids<0) {
13754: undef(%importedrespids);
13755: undef(%importedpartids);
13756: if ($origfile eq '') {
13757: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
13758: $origfile=&getfile($origfilelocation);
13759: @origfiletagids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
13760: }
13761: }
13762: my @impfilepartids;
13763: # If <partorder> tag is included in metadata for the imported file
13764: # get the parts in the imported file from that.
13765: if (grep(/^partorder$/,@libfilekeys)) {
13766: %currmetaentry = %metaentry;
13767: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
13768: $depthcount+1);
13769: %metaentry = %currmetaentry;
13770: undef(%currmetaentry);
13771: if ($libpartorder ne '') {
13772: @impfilepartids=split(/\s*,\s*/,$libpartorder);
13773: }
13774: } else {
13775: # If no <partorder> tag available, load and inspect imported file
13776: my $impfile=&getfile($location);
13777: @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
13778: }
13779: if ($#impfilepartids>=0) {
13780: # This problem had parts
13781: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
13782: } else {
13783: # Importing by turning a single problem into a problem part
13784: # It gets the import-tags ID as part-ID
13785: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
13786: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
13787: }
13788: } else {
13789: # Import as problem or as normal import
13790: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
13791: unless ($importmode eq 'problem') {
13792: # Normal import
13793: if (defined($token->[2]->{'id'})) {
13794: $unikey.='_'.$token->[2]->{'id'};
13795: }
13796: }
13797: # Check metadata for imported file to
13798: # see if it contained parts
13799: if (grep(/^partorder$/,@libfilekeys)) {
13800: %currmetaentry = %metaentry;
13801: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
13802: $depthcount+1);
13803: %metaentry = %currmetaentry;
13804: undef(%currmetaentry);
13805: if ($libpartorder ne '') {
13806: $importedparts = 1;
13807: $importedpartids{$token->[2]->{'id'}}=$libpartorder;
13808: }
13809: }
13810: }
13811: if ($depthcount<20) {
13812: my $metadata =
13813: &metadata($uri,'keys',$toolsymb,$location,$unikey,
13814: $depthcount+1);
13815: foreach my $meta (split(',',$metadata)) {
13816: $metaentry{':'.$meta}=$metaentry{':'.$meta};
13817: $metathesekeys{$meta}=1;
13818: }
13819: }
13820: } else {
13821: #
13822: # Not importing, some other kind of non-package, non-library start tag
13823: #
13824: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
13825: if (defined($token->[2]->{'id'})) {
13826: $unikey.='_'.$token->[2]->{'id'};
13827: }
13828: if (defined($token->[2]->{'name'})) {
13829: $unikey.='_'.$token->[2]->{'name'};
13830: }
13831: $metathesekeys{$unikey}=1;
13832: foreach my $param (@{$token->[3]}) {
13833: $metaentry{':'.$unikey.'.'.$param} =
13834: $token->[2]->{$param};
13835: }
13836: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
13837: my $default=$metaentry{':'.$unikey.'.default'};
13838: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
13839: # only ws inside the tag, and not in default, so use default
13840: # as value
13841: $metaentry{':'.$unikey}=$default;
13842: } elsif ( $internaltext =~ /\S/ ) {
13843: # something interesting inside the tag
13844: $metaentry{':'.$unikey}=$internaltext;
13845: } else {
13846: # no interesting values, don't set a default
13847: }
13848: # end of not-a-package not-a-library import
13849: }
13850: # end of not-a-package start tag
13851: }
13852: # the next is the end of "start tag"
13853: }
13854: }
13855: my ($extension) = ($uri =~ /\.(\w+)$/);
13856: $extension = lc($extension);
13857: if ($extension eq 'htm') { $extension='html'; }
13858:
13859: foreach my $key (keys(%packagetab)) {
13860: #no specific packages #how's our extension
13861: if ($key!~/^extension_\Q$extension\E&/) { next; }
13862: &metadata_create_package_def($uri,$key,'extension_'.$extension,
13863: \%metathesekeys);
13864: }
13865:
13866: if (!exists($metaentry{':packages'})
13867: || $packagetab{"import_defaults&extension_$extension"}) {
13868: foreach my $key (keys(%packagetab)) {
13869: #no specific packages well let's get default then
13870: if ($key!~/^default&/) { next; }
13871: &metadata_create_package_def($uri,$key,'default',
13872: \%metathesekeys);
13873: }
13874: }
13875: # are there custom rights to evaluate
13876: if ($metaentry{':copyright'} eq 'custom') {
13877:
13878: #
13879: # Importing a rights file here
13880: #
13881: unless ($depthcount) {
13882: my $location=$metaentry{':customdistributionfile'};
13883: my $dir=$filename;
13884: $dir=~s|[^/]*$||;
13885: $location=&filelocation($dir,$location);
13886: my $rights_metadata =
13887: &metadata($uri,'keys',$toolsymb,$location,'_rights',
13888: $depthcount+1);
13889: foreach my $rights (split(',',$rights_metadata)) {
13890: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
13891: $metathesekeys{$rights}=1;
13892: }
13893: }
13894: }
13895: # uniqifiy package listing
13896: my %seen;
13897: my @uniq_packages =
13898: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
13899: $metaentry{':packages'} = join(',',@uniq_packages);
13900:
13901: if (($importedresponses) || ($importedparts)) {
13902: if ($importedparts) {
13903: # We had imported parts and need to rebuild partorder
13904: $metaentry{':partorder'}='';
13905: $metathesekeys{'partorder'}=1;
13906: }
13907: if ($importedresponses) {
13908: # We had imported responses and need to rebuil responseorder
13909: $metaentry{':responseorder'}='';
13910: $metathesekeys{'responseorder'}=1;
13911: }
13912: for (my $index=0;$index<$#origfiletagids;$index+=2) {
13913: my $origid = $origfiletagids[$index+1];
13914: if ($origfiletagids[$index] eq 'part') {
13915: # Original part, part of the problem
13916: if ($importedparts) {
13917: $metaentry{':partorder'}.=','.$origid;
13918: }
13919: } elsif ($origfiletagids[$index] eq 'import') {
13920: if ($importedparts) {
13921: # We have imported parts at this position
13922: if ($importedpartids{$origid} ne '') {
13923: $metaentry{':partorder'}.=','.$importedpartids{$origid};
13924: }
13925: }
13926: if ($importedresponses) {
13927: # We have imported responses at this position
13928: if ($importedrespids{$origid} ne '') {
13929: $metaentry{':responseorder'}.=','.$importedrespids{$origid};
13930: }
13931: }
13932: } else {
13933: # Original response item, part of the problem
13934: if ($importedresponses) {
13935: $metaentry{':responseorder'}.=','.$origid;
13936: }
13937: }
13938: }
13939: if ($importedparts) {
13940: $metaentry{':partorder'}=~s/^\,//;
13941: }
13942: if ($importedresponses) {
13943: $metaentry{':responseorder'}=~s/^\,//;
13944: }
13945: }
13946: $metaentry{':keys'} = join(',',keys(%metathesekeys));
13947: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
13948: $metaentry{':allpossiblekeys'}=join(',',keys(%metathesekeys));
13949: unless ($liburi) {
13950: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
13951: }
13952: # this is the end of "was not already recently cached
13953: }
13954: return $metaentry{':'.$what};
13955: }
13956:
13957: sub metadata_create_package_def {
13958: my ($uri,$key,$package,$metathesekeys)=@_;
13959: my ($pack,$name,$subp)=split(/\&/,$key);
13960: if ($subp eq 'default') { next; }
13961:
13962: if (defined($metaentry{':packages'})) {
13963: $metaentry{':packages'}.=','.$package;
13964: } else {
13965: $metaentry{':packages'}=$package;
13966: }
13967: my $value=$packagetab{$key};
13968: my $unikey;
13969: $unikey='parameter_0_'.$name;
13970: $metaentry{':'.$unikey.'.part'}=0;
13971: $$metathesekeys{$unikey}=1;
13972: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
13973: $metaentry{':'.$unikey.'.'.$subp}=$value;
13974: }
13975: if (defined($metaentry{':'.$unikey.'.default'})) {
13976: $metaentry{':'.$unikey}=
13977: $metaentry{':'.$unikey.'.default'};
13978: }
13979: }
13980:
13981: sub metadata_generate_part0 {
13982: my ($metadata,$metacache,$uri) = @_;
13983: my %allnames;
13984: foreach my $metakey (keys(%$metadata)) {
13985: if ($metakey=~/^parameter\_(.*)/) {
13986: my $part=$$metacache{':'.$metakey.'.part'};
13987: my $name=$$metacache{':'.$metakey.'.name'};
13988: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
13989: $allnames{$name}=$part;
13990: }
13991: }
13992: }
13993: foreach my $name (keys(%allnames)) {
13994: $$metadata{"parameter_0_$name"}=1;
13995: my $key=":parameter_0_$name";
13996: $$metacache{"$key.part"}='0';
13997: $$metacache{"$key.name"}=$name;
13998: $$metacache{"$key.type"}=$$metacache{':parameter_'.
13999: $allnames{$name}.'_'.$name.
14000: '.type'};
14001: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
14002: '.display'};
14003: my $expr='[Part: '.$allnames{$name}.']';
14004: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
14005: $$metacache{"$key.display"}=$olddis;
14006: }
14007: }
14008:
14009: # ------------------------------------------------------ Devalidate title cache
14010:
14011: sub devalidate_title_cache {
14012: my ($url)=@_;
14013: if (!$env{'request.course.id'}) { return; }
14014: my $symb=&symbread($url);
14015: if (!$symb) { return; }
14016: my $key=$env{'request.course.id'}."\0".$symb;
14017: &devalidate_cache_new('title',$key);
14018: }
14019:
14020: # ------------------------------------------------- Get the title of a course
14021:
14022: sub current_course_title {
14023: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
14024: }
14025: # ------------------------------------------------- Get the title of a resource
14026:
14027: sub gettitle {
14028: my $urlsymb=shift;
14029: my $symb=&symbread($urlsymb);
14030: if ($symb) {
14031: my $key=$env{'request.course.id'}."\0".$symb;
14032: my ($result,$cached)=&is_cached_new('title',$key);
14033: if (defined($cached)) {
14034: return $result;
14035: }
14036: my ($map,$resid,$url)=&decode_symb($symb);
14037: my $title='';
14038: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
14039: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
14040: } else {
14041: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
14042: &GDBM_READER(),0640)) {
14043: my $mapid=$bighash{'map_pc_'.&clutter($map)};
14044: $title=$bighash{'title_'.$mapid.'.'.$resid};
14045: untie(%bighash);
14046: }
14047: }
14048: $title=~s/\&colon\;/\:/gs;
14049: if ($title) {
14050: # Remember both $symb and $title for dynamic metadata
14051: $accesshash{$symb.'___crstitle'}=$title;
14052: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
14053: # Cache this title and then return it
14054: return &do_cache_new('title',$key,$title,600);
14055: }
14056: $urlsymb=$url;
14057: }
14058: my $title=&metadata($urlsymb,'title');
14059: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
14060: return $title;
14061: }
14062:
14063: sub get_slot {
14064: my ($which,$cnum,$cdom)=@_;
14065: if (!$cnum || !$cdom) {
14066: (undef,my $courseid)=&whichuser();
14067: $cdom=$env{'course.'.$courseid.'.domain'};
14068: $cnum=$env{'course.'.$courseid.'.num'};
14069: }
14070: my $key=join("\0",'slots',$cdom,$cnum,$which);
14071: my %slotinfo;
14072: if (exists($remembered{$key})) {
14073: $slotinfo{$which} = $remembered{$key};
14074: } else {
14075: %slotinfo=&get('slots',[$which],$cdom,$cnum);
14076: &Apache::lonhomework::showhash(%slotinfo);
14077: my ($tmp)=keys(%slotinfo);
14078: if ($tmp=~/^error:/) { return (); }
14079: $remembered{$key} = $slotinfo{$which};
14080: }
14081: if (ref($slotinfo{$which}) eq 'HASH') {
14082: return %{$slotinfo{$which}};
14083: }
14084: return $slotinfo{$which};
14085: }
14086:
14087: sub get_reservable_slots {
14088: my ($cnum,$cdom,$uname,$udom) = @_;
14089: my $now = time;
14090: my $reservable_info;
14091: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
14092: if (exists($remembered{$key})) {
14093: $reservable_info = $remembered{$key};
14094: } else {
14095: my %resv;
14096: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
14097: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
14098: $reservable_info = \%resv;
14099: $remembered{$key} = $reservable_info;
14100: }
14101: return $reservable_info;
14102: }
14103:
14104: sub get_course_slots {
14105: my ($cnum,$cdom) = @_;
14106: my $hashid=$cnum.':'.$cdom;
14107: my ($result,$cached) = &is_cached_new('allslots',$hashid);
14108: if (defined($cached)) {
14109: if (ref($result) eq 'HASH') {
14110: return %{$result};
14111: }
14112: } else {
14113: my %slots=&dump('slots',$cdom,$cnum);
14114: my ($tmp) = keys(%slots);
14115: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
14116: &do_cache_new('allslots',$hashid,\%slots,600);
14117: return %slots;
14118: }
14119: }
14120: return;
14121: }
14122:
14123: sub devalidate_slots_cache {
14124: my ($cnum,$cdom)=@_;
14125: my $hashid=$cnum.':'.$cdom;
14126: &devalidate_cache_new('allslots',$hashid);
14127: }
14128:
14129: sub get_coursechange {
14130: my ($cdom,$cnum) = @_;
14131: if ($cdom eq '' || $cnum eq '') {
14132: return unless ($env{'request.course.id'});
14133: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
14134: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
14135: }
14136: my $hashid=$cdom.'_'.$cnum;
14137: my ($change,$cached)=&is_cached_new('crschange',$hashid);
14138: if ((defined($cached)) && ($change ne '')) {
14139: return $change;
14140: } else {
14141: my %crshash;
14142: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
14143: if ($crshash{'internal.contentchange'} eq '') {
14144: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
14145: if ($change eq '') {
14146: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
14147: $change = $crshash{'internal.created'};
14148: }
14149: } else {
14150: $change = $crshash{'internal.contentchange'};
14151: }
14152: my $cachetime = 600;
14153: &do_cache_new('crschange',$hashid,$change,$cachetime);
14154: }
14155: return $change;
14156: }
14157:
14158: sub devalidate_coursechange_cache {
14159: my ($cdom,$cnum)=@_;
14160: my $hashid=$cdom.'_'.$cnum;
14161: &devalidate_cache_new('crschange',$hashid);
14162: }
14163:
14164: sub get_suppchange {
14165: my ($cdom,$cnum) = @_;
14166: if ($cdom eq '' || $cnum eq '') {
14167: return unless ($env{'request.course.id'});
14168: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
14169: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
14170: }
14171: my $hashid=$cdom.'_'.$cnum;
14172: my ($change,$cached)=&is_cached_new('suppchange',$hashid);
14173: if ((defined($cached)) && ($change ne '')) {
14174: return $change;
14175: } else {
14176: my %crshash = &get('environment',['internal.supplementalchange'],$cdom,$cnum);
14177: if ($crshash{'internal.supplementalchange'} eq '') {
14178: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
14179: if ($change eq '') {
14180: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
14181: $change = $crshash{'internal.created'};
14182: }
14183: } else {
14184: $change = $crshash{'internal.supplementalchange'};
14185: }
14186: my $cachetime = 600;
14187: &do_cache_new('suppchange',$hashid,$change,$cachetime);
14188: }
14189: return $change;
14190: }
14191:
14192: sub devalidate_suppchange_cache {
14193: my ($cdom,$cnum)=@_;
14194: my $hashid=$cdom.'_'.$cnum;
14195: &devalidate_cache_new('suppchange',$hashid);
14196: }
14197:
14198: sub update_supp_caches {
14199: my ($cdom,$cnum) = @_;
14200: my %servers = &internet_dom_servers($cdom);
14201: my @ids=¤t_machine_ids();
14202: foreach my $server (keys(%servers)) {
14203: next if (grep(/^\Q$server\E$/,@ids));
14204: my $hashid=$cnum.':'.$cdom;
14205: my $cachekey = &escape('showsupp').':'.&escape($hashid);
14206: &remote_devalidate_cache($server,[$cachekey]);
14207: }
14208: &has_unhidden_suppfiles($cnum,$cdom,1,1);
14209: &count_supptools($cnum,$cdom,1);
14210: my $now = time;
14211: if ($env{'request.course.id'} eq $cdom.'_'.$cnum) {
14212: &Apache::lonnet::appenv({'request.course.suppupdated' => $now});
14213: }
14214: &put('environment',{'internal.supplementalchange' => $now},
14215: $cdom,$cnum);
14216: &Apache::lonnet::appenv(
14217: {'course.'.$cdom.'_'.$cnum.'.internal.supplementalchange' => $now});
14218: &do_cache_new('suppchange',$cdom.'_'.$cnum,$now,600);
14219: }
14220:
14221: # ------------------------------------------------- Update symbolic store links
14222:
14223: sub symblist {
14224: my ($mapname,%newhash)=@_;
14225: $mapname=&deversion(&declutter($mapname));
14226: my %hash;
14227: if (($env{'request.course.fn'}) && (%newhash)) {
14228: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
14229: &GDBM_WRCREAT(),0640)) {
14230: foreach my $url (keys(%newhash)) {
14231: next if ($url eq 'last_known'
14232: && $env{'form.no_update_last_known'});
14233: $hash{declutter($url)}=&encode_symb($mapname,
14234: $newhash{$url}->[1],
14235: $newhash{$url}->[0]);
14236: }
14237: if (untie(%hash)) {
14238: return 'ok';
14239: }
14240: }
14241: }
14242: return 'error';
14243: }
14244:
14245: # --------------------------------------------------------------- Verify a symb
14246:
14247: sub symbverify {
14248: my ($symb,$thisurl,$encstate)=@_;
14249: my $thisfn=$thisurl;
14250: $thisfn=&declutter($thisfn);
14251: # direct jump to resource in page or to a sequence - will construct own symbs
14252: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
14253: # check URL part
14254: my ($map,$resid,$url)=&decode_symb($symb);
14255:
14256: unless ($url eq $thisfn) { return 0; }
14257:
14258: $symb=&symbclean($symb);
14259: $thisurl=&deversion($thisurl);
14260: $thisfn=&deversion($thisfn);
14261:
14262: my %bighash;
14263: my $okay=0;
14264:
14265: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
14266: &GDBM_READER(),0640)) {
14267: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
14268: $thisurl =~ s/\?.+$//;
14269: if ($map =~ m{^uploaded/.+\.page$}) {
14270: $thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
14271: $thisurl =~ s{^\Qhttp://https://\E}{https://};
14272: }
14273: }
14274: my $ids;
14275: if ($map =~ m{^uploaded/.+\.page$}) {
14276: $ids=$bighash{'ids_'.&clutter_with_no_wrapper($thisurl)};
14277: } else {
14278: $ids=$bighash{'ids_'.&clutter($thisurl)};
14279: }
14280: unless ($ids) {
14281: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
14282: $ids=$bighash{$idkey};
14283: }
14284: if ($ids) {
14285: # ------------------------------------------------------------------- Has ID(s)
14286: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
14287: $symb =~ s/\?.+$//;
14288: }
14289: foreach my $id (split(/\,/,$ids)) {
14290: my ($mapid,$resid)=split(/\./,$id);
14291: if (
14292: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
14293: eq $symb) {
14294: if (ref($encstate)) {
14295: $$encstate = $bighash{'encrypted_'.$id};
14296: }
14297: if (($env{'request.role.adv'}) ||
14298: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
14299: ($thisurl eq '/adm/navmaps')) {
14300: $okay=1;
14301: last;
14302: }
14303: }
14304: }
14305: }
14306: untie(%bighash);
14307: }
14308: return $okay;
14309: }
14310:
14311: # --------------------------------------------------------------- Clean-up symb
14312:
14313: sub symbclean {
14314: my $symb=shift;
14315: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
14316: # remove version from map
14317: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
14318:
14319: # remove version from URL
14320: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
14321:
14322: # remove wrapper
14323:
14324: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
14325: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
14326: return $symb;
14327: }
14328:
14329: # ---------------------------------------------- Split symb to find map and url
14330:
14331: sub encode_symb {
14332: my ($map,$resid,$url)=@_;
14333: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
14334: }
14335:
14336: sub decode_symb {
14337: my $symb=shift;
14338: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
14339: my ($map,$resid,$url)=split(/___/,$symb);
14340: return (&fixversion($map),$resid,&fixversion($url));
14341: }
14342:
14343: sub fixversion {
14344: my $fn=shift;
14345: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
14346: my %bighash;
14347: my $uri=&clutter($fn);
14348: my $key=$env{'request.course.id'}.'_'.$uri;
14349: # is this cached?
14350: my ($result,$cached)=&is_cached_new('courseresversion',$key);
14351: if (defined($cached)) { return $result; }
14352: # unfortunately not cached, or expired
14353: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
14354: &GDBM_READER(),0640)) {
14355: if ($bighash{'version_'.$uri}) {
14356: my $version=$bighash{'version_'.$uri};
14357: unless (($version eq 'mostrecent') ||
14358: ($version==&getversion($uri))) {
14359: $uri=~s/\.(\w+)$/\.$version\.$1/;
14360: }
14361: }
14362: untie %bighash;
14363: }
14364: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
14365: }
14366:
14367: sub deversion {
14368: my $url=shift;
14369: $url=~s/\.\d+\.(\w+)$/\.$1/;
14370: return $url;
14371: }
14372:
14373: # ------------------------------------------------------ Return symb list entry
14374:
14375: sub symbread {
14376: my ($thisfn,$donotrecurse,$ignorecachednull,$checkforblock,$possibles,
14377: $ignoresymbdb,$noenccheck)=@_;
14378: my $cache_str='request.symbread.cached.'.$thisfn;
14379: if (defined($env{$cache_str})) {
14380: unless (ref($possibles) eq 'HASH') {
14381: if ($ignorecachednull) {
14382: return $env{$cache_str} unless ($env{$cache_str} eq '');
14383: } else {
14384: return $env{$cache_str};
14385: }
14386: }
14387: }
14388: # no filename provided? try from environment
14389: unless ($thisfn) {
14390: if ($env{'request.symb'}) {
14391: return $env{$cache_str}=&symbclean($env{'request.symb'});
14392: }
14393: $thisfn=$env{'request.filename'};
14394: }
14395: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
14396: # is that filename actually a symb? Verify, clean, and return
14397: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
14398: if (&symbverify($thisfn,$1)) {
14399: return $env{$cache_str}=&symbclean($thisfn);
14400: }
14401: }
14402: $thisfn=declutter($thisfn);
14403: my %hash;
14404: my %bighash;
14405: my $syval='';
14406: if (($env{'request.course.fn'}) && ($thisfn)) {
14407: unless ($ignoresymbdb) {
14408: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
14409: &GDBM_READER(),0640)) {
14410: $syval=$hash{$thisfn};
14411: untie(%hash);
14412: }
14413: if ($syval && $checkforblock) {
14414: my @blockers = &has_comm_blocking('bre',$syval,$thisfn,$ignoresymbdb,$noenccheck);
14415: if (@blockers) {
14416: $syval='';
14417: }
14418: }
14419: }
14420: # ---------------------------------------------------------- There was an entry
14421: if ($syval) {
14422: #unless ($syval=~/\_\d+$/) {
14423: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
14424: #&appenv({'request.ambiguous' => $thisfn});
14425: #return $env{$cache_str}='';
14426: #}
14427: #$syval.=$1;
14428: #}
14429: } else {
14430: # ------------------------------------------------------- Was not in symb table
14431: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
14432: &GDBM_READER(),0640)) {
14433: # ---------------------------------------------- Get ID(s) for current resource
14434: my $ids=$bighash{'ids_'.&clutter($thisfn)};
14435: unless ($ids) {
14436: $ids=$bighash{'ids_/'.$thisfn};
14437: }
14438: unless ($ids) {
14439: # alias?
14440: $ids=$bighash{'mapalias_'.$thisfn};
14441: }
14442: if ($ids) {
14443: # ------------------------------------------------------------------- Has ID(s)
14444: my @possibilities=split(/\,/,$ids);
14445: if ($#possibilities==0) {
14446: # ----------------------------------------------- There is only one possibility
14447: my ($mapid,$resid)=split(/\./,$ids);
14448: $syval=&encode_symb($bighash{'map_id_'.$mapid},
14449: $resid,$thisfn);
14450: if (ref($possibles) eq 'HASH') {
14451: unless ($bighash{'randomout_'.$ids} || $env{'request.role.adv'}) {
14452: $possibles->{$syval} = 1;
14453: }
14454: }
14455: if ($checkforblock) {
14456: unless ($bighash{'randomout_'.$ids} || $env{'request.role.adv'}) {
14457: my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids},'',$noenccheck);
14458: if (@blockers) {
14459: $syval = '';
14460: untie(%bighash);
14461: return $env{$cache_str}='';
14462: }
14463: }
14464: }
14465: } elsif ((!$donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
14466: # ------------------------------------------ There is more than one possibility
14467: my $realpossible=0;
14468: foreach my $id (@possibilities) {
14469: my $file=$bighash{'src_'.$id};
14470: my $canaccess;
14471: if (($donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
14472: $canaccess = 1;
14473: } else {
14474: $canaccess = &allowed('bre',$file);
14475: }
14476: if ($canaccess) {
14477: my ($mapid,$resid)=split(/\./,$id);
14478: if ($bighash{'map_type_'.$mapid} ne 'page') {
14479: my $poss_syval=&encode_symb($bighash{'map_id_'.$mapid},
14480: $resid,$thisfn);
14481: next if ($bighash{'randomout_'.$id} && !$env{'request.role.adv'});
14482: next unless (($noenccheck) || ($bighash{'encrypted_'.$id} eq $env{'request.enc'}));
14483: if ($checkforblock) {
14484: my @blockers = &has_comm_blocking('bre',$poss_syval,$file,'',$noenccheck);
14485: if (@blockers > 0) {
14486: $syval = '';
14487: } else {
14488: $syval = $poss_syval;
14489: $realpossible++;
14490: }
14491: } else {
14492: $syval = $poss_syval;
14493: $realpossible++;
14494: }
14495: if ($syval) {
14496: if (ref($possibles) eq 'HASH') {
14497: $possibles->{$syval} = 1;
14498: }
14499: }
14500: }
14501: }
14502: }
14503: if ($realpossible!=1) { $syval=''; }
14504: } else {
14505: $syval='';
14506: }
14507: }
14508: untie(%bighash);
14509: }
14510: }
14511: if ($syval) {
14512: return $env{$cache_str}=$syval;
14513: }
14514: }
14515: &appenv({'request.ambiguous' => $thisfn});
14516: return $env{$cache_str}='';
14517: }
14518:
14519: # ---------------------------------------------------------- Return random seed
14520:
14521: sub numval {
14522: my $txt=shift;
14523: $txt=~tr/A-J/0-9/;
14524: $txt=~tr/a-j/0-9/;
14525: $txt=~tr/K-T/0-9/;
14526: $txt=~tr/k-t/0-9/;
14527: $txt=~tr/U-Z/0-5/;
14528: $txt=~tr/u-z/0-5/;
14529: $txt=~s/\D//g;
14530: if ($_64bit) { if ($txt > 2**32) { return -1; } }
14531: return int($txt);
14532: }
14533:
14534: sub numval2 {
14535: my $txt=shift;
14536: $txt=~tr/A-J/0-9/;
14537: $txt=~tr/a-j/0-9/;
14538: $txt=~tr/K-T/0-9/;
14539: $txt=~tr/k-t/0-9/;
14540: $txt=~tr/U-Z/0-5/;
14541: $txt=~tr/u-z/0-5/;
14542: $txt=~s/\D//g;
14543: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
14544: my $total;
14545: foreach my $val (@txts) { $total+=$val; }
14546: if ($_64bit) { if ($total > 2**32) { return -1; } }
14547: return int($total);
14548: }
14549:
14550: sub numval3 {
14551: use integer;
14552: my $txt=shift;
14553: $txt=~tr/A-J/0-9/;
14554: $txt=~tr/a-j/0-9/;
14555: $txt=~tr/K-T/0-9/;
14556: $txt=~tr/k-t/0-9/;
14557: $txt=~tr/U-Z/0-5/;
14558: $txt=~tr/u-z/0-5/;
14559: $txt=~s/\D//g;
14560: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
14561: my $total;
14562: foreach my $val (@txts) { $total+=$val; }
14563: if ($_64bit) { $total=(($total<<32)>>32); }
14564: return $total;
14565: }
14566:
14567: sub digest {
14568: my ($data)=@_;
14569: my $digest=&Digest::MD5::md5($data);
14570: my ($a,$b,$c,$d)=unpack("iiii",$digest);
14571: my ($e,$f);
14572: {
14573: use integer;
14574: $e=($a+$b);
14575: $f=($c+$d);
14576: if ($_64bit) {
14577: $e=(($e<<32)>>32);
14578: $f=(($f<<32)>>32);
14579: }
14580: }
14581: if (wantarray) {
14582: return ($e,$f);
14583: } else {
14584: my $g;
14585: {
14586: use integer;
14587: $g=($e+$f);
14588: if ($_64bit) {
14589: $g=(($g<<32)>>32);
14590: }
14591: }
14592: return $g;
14593: }
14594: }
14595:
14596: sub latest_rnd_algorithm_id {
14597: return '64bit5';
14598: }
14599:
14600: sub get_rand_alg {
14601: my ($courseid)=@_;
14602: if (!$courseid) { $courseid=(&whichuser())[1]; }
14603: if ($courseid) {
14604: return $env{"course.$courseid.rndseed"};
14605: }
14606: return &latest_rnd_algorithm_id();
14607: }
14608:
14609: sub validCODE {
14610: my ($CODE)=@_;
14611: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
14612: return 0;
14613: }
14614:
14615: sub getCODE {
14616: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
14617: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
14618: defined($Apache::lonhomework::parsing_a_task) ) &&
14619: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
14620: return $Apache::lonhomework::history{'resource.CODE'};
14621: }
14622: return undef;
14623: }
14624: #
14625: # Determines the random seed for a specific context:
14626: #
14627: # parameters:
14628: # symb - in course context the symb for the seed.
14629: # course_id - The course id of the form domain_coursenum.
14630: # domain - Domain for the user.
14631: # course - Course for the user.
14632: # cenv - environment of the course.
14633: #
14634: # NOTE:
14635: # All parameters are picked out of the environment if missing
14636: # or not defined.
14637: # If a symb cannot be determined the current time is used instead.
14638: #
14639: # For a given well defined symb, courside, domain, username,
14640: # and course environment, the seed is reproducible.
14641: #
14642: sub rndseed {
14643: my ($symb,$courseid,$domain,$username, $cenv)=@_;
14644: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
14645: if (!defined($symb)) {
14646: unless ($symb=$wsymb) { return time; }
14647: }
14648: if (!defined $courseid) {
14649: $courseid=$wcourseid;
14650: }
14651: if (!defined $domain) { $domain=$wdomain; }
14652: if (!defined $username) { $username=$wusername }
14653:
14654: my $which;
14655: if (defined($cenv->{'rndseed'})) {
14656: $which = $cenv->{'rndseed'};
14657: } else {
14658: $which =&get_rand_alg($courseid);
14659: }
14660: if (defined(&getCODE())) {
14661:
14662: if ($which eq '64bit5') {
14663: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
14664: } elsif ($which eq '64bit4') {
14665: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
14666: } else {
14667: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
14668: }
14669: } elsif ($which eq '64bit5') {
14670: return &rndseed_64bit5($symb,$courseid,$domain,$username);
14671: } elsif ($which eq '64bit4') {
14672: return &rndseed_64bit4($symb,$courseid,$domain,$username);
14673: } elsif ($which eq '64bit3') {
14674: return &rndseed_64bit3($symb,$courseid,$domain,$username);
14675: } elsif ($which eq '64bit2') {
14676: return &rndseed_64bit2($symb,$courseid,$domain,$username);
14677: } elsif ($which eq '64bit') {
14678: return &rndseed_64bit($symb,$courseid,$domain,$username);
14679: }
14680: return &rndseed_32bit($symb,$courseid,$domain,$username);
14681: }
14682:
14683: sub rndseed_32bit {
14684: my ($symb,$courseid,$domain,$username)=@_;
14685: {
14686: use integer;
14687: my $symbchck=unpack("%32C*",$symb) << 27;
14688: my $symbseed=numval($symb) << 22;
14689: my $namechck=unpack("%32C*",$username) << 17;
14690: my $nameseed=numval($username) << 12;
14691: my $domainseed=unpack("%32C*",$domain) << 7;
14692: my $courseseed=unpack("%32C*",$courseid);
14693: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
14694: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
14695: #&logthis("rndseed :$num:$symb");
14696: if ($_64bit) { $num=(($num<<32)>>32); }
14697: return $num;
14698: }
14699: }
14700:
14701: sub rndseed_64bit {
14702: my ($symb,$courseid,$domain,$username)=@_;
14703: {
14704: use integer;
14705: my $symbchck=unpack("%32S*",$symb) << 21;
14706: my $symbseed=numval($symb) << 10;
14707: my $namechck=unpack("%32S*",$username);
14708:
14709: my $nameseed=numval($username) << 21;
14710: my $domainseed=unpack("%32S*",$domain) << 10;
14711: my $courseseed=unpack("%32S*",$courseid);
14712:
14713: my $num1=$symbchck+$symbseed+$namechck;
14714: my $num2=$nameseed+$domainseed+$courseseed;
14715: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
14716: #&logthis("rndseed :$num:$symb");
14717: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
14718: return "$num1,$num2";
14719: }
14720: }
14721:
14722: sub rndseed_64bit2 {
14723: my ($symb,$courseid,$domain,$username)=@_;
14724: {
14725: use integer;
14726: # strings need to be an even # of cahracters long, it it is odd the
14727: # last characters gets thrown away
14728: my $symbchck=unpack("%32S*",$symb.' ') << 21;
14729: my $symbseed=numval($symb) << 10;
14730: my $namechck=unpack("%32S*",$username.' ');
14731:
14732: my $nameseed=numval($username) << 21;
14733: my $domainseed=unpack("%32S*",$domain.' ') << 10;
14734: my $courseseed=unpack("%32S*",$courseid.' ');
14735:
14736: my $num1=$symbchck+$symbseed+$namechck;
14737: my $num2=$nameseed+$domainseed+$courseseed;
14738: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
14739: #&logthis("rndseed :$num:$symb");
14740: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
14741: return "$num1,$num2";
14742: }
14743: }
14744:
14745: sub rndseed_64bit3 {
14746: my ($symb,$courseid,$domain,$username)=@_;
14747: {
14748: use integer;
14749: # strings need to be an even # of cahracters long, it it is odd the
14750: # last characters gets thrown away
14751: my $symbchck=unpack("%32S*",$symb.' ') << 21;
14752: my $symbseed=numval2($symb) << 10;
14753: my $namechck=unpack("%32S*",$username.' ');
14754:
14755: my $nameseed=numval2($username) << 21;
14756: my $domainseed=unpack("%32S*",$domain.' ') << 10;
14757: my $courseseed=unpack("%32S*",$courseid.' ');
14758:
14759: my $num1=$symbchck+$symbseed+$namechck;
14760: my $num2=$nameseed+$domainseed+$courseseed;
14761: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
14762: #&logthis("rndseed :$num1:$num2:$_64bit");
14763: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
14764:
14765: return "$num1:$num2";
14766: }
14767: }
14768:
14769: sub rndseed_64bit4 {
14770: my ($symb,$courseid,$domain,$username)=@_;
14771: {
14772: use integer;
14773: # strings need to be an even # of cahracters long, it it is odd the
14774: # last characters gets thrown away
14775: my $symbchck=unpack("%32S*",$symb.' ') << 21;
14776: my $symbseed=numval3($symb) << 10;
14777: my $namechck=unpack("%32S*",$username.' ');
14778:
14779: my $nameseed=numval3($username) << 21;
14780: my $domainseed=unpack("%32S*",$domain.' ') << 10;
14781: my $courseseed=unpack("%32S*",$courseid.' ');
14782:
14783: my $num1=$symbchck+$symbseed+$namechck;
14784: my $num2=$nameseed+$domainseed+$courseseed;
14785: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
14786: #&logthis("rndseed :$num1:$num2:$_64bit");
14787: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
14788:
14789: return "$num1:$num2";
14790: }
14791: }
14792:
14793: sub rndseed_64bit5 {
14794: my ($symb,$courseid,$domain,$username)=@_;
14795: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
14796: return "$num1:$num2";
14797: }
14798:
14799: sub rndseed_CODE_64bit {
14800: my ($symb,$courseid,$domain,$username)=@_;
14801: {
14802: use integer;
14803: my $symbchck=unpack("%32S*",$symb.' ') << 16;
14804: my $symbseed=numval2($symb);
14805: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
14806: my $CODEseed=numval(&getCODE());
14807: my $courseseed=unpack("%32S*",$courseid.' ');
14808: my $num1=$symbseed+$CODEchck;
14809: my $num2=$CODEseed+$courseseed+$symbchck;
14810: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
14811: #&logthis("rndseed :$num1:$num2:$symb");
14812: if ($_64bit) { $num1=(($num1<<32)>>32); }
14813: if ($_64bit) { $num2=(($num2<<32)>>32); }
14814: return "$num1:$num2";
14815: }
14816: }
14817:
14818: sub rndseed_CODE_64bit4 {
14819: my ($symb,$courseid,$domain,$username)=@_;
14820: {
14821: use integer;
14822: my $symbchck=unpack("%32S*",$symb.' ') << 16;
14823: my $symbseed=numval3($symb);
14824: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
14825: my $CODEseed=numval3(&getCODE());
14826: my $courseseed=unpack("%32S*",$courseid.' ');
14827: my $num1=$symbseed+$CODEchck;
14828: my $num2=$CODEseed+$courseseed+$symbchck;
14829: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
14830: #&logthis("rndseed :$num1:$num2:$symb");
14831: if ($_64bit) { $num1=(($num1<<32)>>32); }
14832: if ($_64bit) { $num2=(($num2<<32)>>32); }
14833: return "$num1:$num2";
14834: }
14835: }
14836:
14837: sub rndseed_CODE_64bit5 {
14838: my ($symb,$courseid,$domain,$username)=@_;
14839: my $code = &getCODE();
14840: my ($num1,$num2)=&digest("$symb,$courseid,$code");
14841: return "$num1:$num2";
14842: }
14843:
14844: sub setup_random_from_rndseed {
14845: my ($rndseed)=@_;
14846: if ($rndseed =~/([,:])/) {
14847: my ($num1,$num2) = map { abs($_); } (split(/[,:]/,$rndseed));
14848: if ((!$num1) || (!$num2) || ($num1 > 2147483562) || ($num2 > 2147483398)) {
14849: &Math::Random::random_set_seed_from_phrase($rndseed);
14850: } else {
14851: &Math::Random::random_set_seed($num1,$num2);
14852: }
14853: } else {
14854: &Math::Random::random_set_seed_from_phrase($rndseed);
14855: }
14856: }
14857:
14858: sub latest_receipt_algorithm_id {
14859: return 'receipt3';
14860: }
14861:
14862: sub recunique {
14863: my $fucourseid=shift;
14864: my $unique;
14865: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
14866: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
14867: $unique=$env{"course.$fucourseid.internal.encseed"};
14868: } else {
14869: $unique=$perlvar{'lonReceipt'};
14870: }
14871: return unpack("%32C*",$unique);
14872: }
14873:
14874: sub recprefix {
14875: my $fucourseid=shift;
14876: my $prefix;
14877: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
14878: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
14879: $prefix=$env{"course.$fucourseid.internal.encpref"};
14880: } else {
14881: $prefix=$perlvar{'lonHostID'};
14882: }
14883: return unpack("%32C*",$prefix);
14884: }
14885:
14886: sub ireceipt {
14887: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
14888:
14889: my $return =&recprefix($fucourseid).'-';
14890:
14891: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
14892: $env{'request.state'} eq 'construct') {
14893: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
14894: return $return;
14895: }
14896:
14897: my $cuname=unpack("%32C*",$funame);
14898: my $cudom=unpack("%32C*",$fudom);
14899: my $cucourseid=unpack("%32C*",$fucourseid);
14900: my $cusymb=unpack("%32C*",$fusymb);
14901: my $cunique=&recunique($fucourseid);
14902: my $cpart=unpack("%32S*",$part);
14903: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
14904:
14905: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
14906:
14907: $return.= ($cunique%$cuname+
14908: $cunique%$cudom+
14909: $cusymb%$cuname+
14910: $cusymb%$cudom+
14911: $cucourseid%$cuname+
14912: $cucourseid%$cudom+
14913: $cpart%$cuname+
14914: $cpart%$cudom);
14915: } else {
14916: $return.= ($cunique%$cuname+
14917: $cunique%$cudom+
14918: $cusymb%$cuname+
14919: $cusymb%$cudom+
14920: $cucourseid%$cuname+
14921: $cucourseid%$cudom);
14922: }
14923: return $return;
14924: }
14925:
14926: sub receipt {
14927: my ($part)=@_;
14928: my ($symb,$courseid,$domain,$name) = &whichuser();
14929: return &ireceipt($name,$domain,$courseid,$symb,$part);
14930: }
14931:
14932: sub whichuser {
14933: my ($passedsymb)=@_;
14934: my ($symb,$courseid,$domain,$name,$publicuser);
14935: if (defined($env{'form.grade_symb'})) {
14936: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
14937: my $allowed=&allowed('vgr',$tmp_courseid);
14938: if (!$allowed &&
14939: exists($env{'request.course.sec'}) &&
14940: $env{'request.course.sec'} !~ /^\s*$/) {
14941: $allowed=&allowed('vgr',$tmp_courseid.
14942: '/'.$env{'request.course.sec'});
14943: }
14944: if ($allowed) {
14945: ($symb)=&get_env_multiple('form.grade_symb');
14946: $courseid=$tmp_courseid;
14947: ($domain)=&get_env_multiple('form.grade_domain');
14948: ($name)=&get_env_multiple('form.grade_username');
14949: return ($symb,$courseid,$domain,$name,$publicuser);
14950: }
14951: }
14952: if (!$passedsymb) {
14953: $symb=&symbread();
14954: } else {
14955: $symb=$passedsymb;
14956: }
14957: $courseid=$env{'request.course.id'};
14958: $domain=$env{'user.domain'};
14959: $name=$env{'user.name'};
14960: if ($name eq 'public' && $domain eq 'public') {
14961: if (!defined($env{'form.username'})) {
14962: $env{'form.username'}.=time.rand(10000000);
14963: }
14964: $name.=$env{'form.username'};
14965: }
14966: return ($symb,$courseid,$domain,$name,$publicuser);
14967:
14968: }
14969:
14970: # ------------------------------------------------------------ Serves up a file
14971: # returns either the contents of the file or
14972: # -1 if the file doesn't exist
14973: #
14974: # if the target is a file that was uploaded via DOCS,
14975: # a check will be made to see if a current copy exists on the local server,
14976: # if it does this will be served, otherwise a copy will be retrieved from
14977: # the home server for the course and stored in /home/httpd/html/userfiles on
14978: # the local server.
14979:
14980: sub getfile {
14981: my ($file) = @_;
14982: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
14983: &repcopy($file);
14984: return &readfile($file);
14985: }
14986:
14987: sub repcopy_userfile {
14988: my ($file)=@_;
14989: my $londocroot = $perlvar{'lonDocRoot'};
14990: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
14991: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
14992: my ($cdom,$cnum,$filename) =
14993: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
14994: my $uri="/uploaded/$cdom/$cnum/$filename";
14995: if (-e "$file") {
14996: # we already have a local copy, check it out
14997: my @fileinfo = stat($file);
14998: my $rtncode;
14999: my $info;
15000: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
15001: if ($lwpresp ne 'ok') {
15002: # there is no such file anymore, even though we had a local copy
15003: if ($rtncode eq '404') {
15004: unlink($file);
15005: }
15006: return -1;
15007: }
15008: if ($info < $fileinfo[9]) {
15009: # nice, the file we have is up-to-date, just say okay
15010: return 'ok';
15011: } else {
15012: # the file is outdated, get rid of it
15013: unlink($file);
15014: }
15015: }
15016: # one way or the other, at this point, we don't have the file
15017: # construct the correct path for the file
15018: my @parts = ($cdom,$cnum);
15019: if ($filename =~ m|^(.+)/[^/]+$|) {
15020: push @parts, split(/\//,$1);
15021: }
15022: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
15023: foreach my $part (@parts) {
15024: $path .= '/'.$part;
15025: if (!-e $path) {
15026: mkdir($path,0770);
15027: }
15028: }
15029: # now the path exists for sure
15030: # get a user agent
15031: my $transferfile=$file.'.in.transfer';
15032: # FIXME: this should flock
15033: if (-e $transferfile) { return 'ok'; }
15034: my $request;
15035: $uri=~s/^\///;
15036: my $homeserver = &homeserver($cnum,$cdom);
15037: my $hostname = &hostname($homeserver);
15038: my $protocol = $protocol{$homeserver};
15039: $protocol = 'http' if ($protocol ne 'https');
15040: $request=new HTTP::Request('GET',$protocol.'://'.$hostname.'/raw/'.$uri);
15041: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,$transferfile,\%perlvar,'',0,1);
15042: # did it work?
15043: if ($response->is_error()) {
15044: unlink($transferfile);
15045: &logthis("Userfile repcopy failed for $uri");
15046: return -1;
15047: }
15048: # worked, rename the transfer file
15049: rename($transferfile,$file);
15050: return 'ok';
15051: }
15052:
15053: sub tokenwrapper {
15054: my $uri=shift;
15055: $uri=~s|^https?\://([^/]+)||;
15056: $uri=~s|^/||;
15057: $env{'user.environment'}=~/\/([^\/]+)\.id/;
15058: my $token=$1;
15059: my (undef,$udom,$uname,$file)=split('/',$uri,4);
15060: if ($udom && $uname && $file) {
15061: $file=~s|(\?\.*)*$||;
15062: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
15063: my $homeserver = &homeserver($uname,$udom);
15064: my $hostname = &hostname($homeserver);
15065: my $protocol = $protocol{$homeserver};
15066: $protocol = 'http' if ($protocol ne 'https');
15067: return $protocol.'://'.$hostname.'/'.$uri.
15068: (($uri=~/\?/)?'&':'?').'token='.$token.
15069: '&tokenissued='.$perlvar{'lonHostID'};
15070: } else {
15071: return '/adm/notfound.html';
15072: }
15073: }
15074:
15075: # call with reqtype HEAD: get last modification time
15076: # call with reqtype GET: get the file contents
15077: # Do not call this with reqtype GET for large files! It loads everything into memory
15078: #
15079: sub getuploaded {
15080: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
15081: $uri=~s/^\///;
15082: my $homeserver = &homeserver($cnum,$cdom);
15083: my $hostname = &hostname($homeserver);
15084: my $protocol = $protocol{$homeserver};
15085: $protocol = 'http' if ($protocol ne 'https');
15086: $uri = $protocol.'://'.$hostname.'/raw/'.$uri;
15087: my $request=new HTTP::Request($reqtype,$uri);
15088: my $response=&LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,'',0,1);
15089: $$rtncode = $response->code;
15090: if (! $response->is_success()) {
15091: return 'failed';
15092: }
15093: if ($reqtype eq 'HEAD') {
15094: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
15095: } elsif ($reqtype eq 'GET') {
15096: $$info = $response->content;
15097: }
15098: return 'ok';
15099: }
15100:
15101: sub readfile {
15102: my $file = shift;
15103: if ( (! -e $file ) || ($file eq '') ) { return -1; };
15104: my $fh;
15105: open($fh,"<",$file);
15106: my $a='';
15107: while (my $line = <$fh>) { $a .= $line; }
15108: return $a;
15109: }
15110:
15111: sub filelocation {
15112: my ($dir,$file) = @_;
15113: my $location;
15114: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
15115:
15116: if ($file =~ m-^/adm/-) {
15117: $file=~s-^/adm/wrapper/-/-;
15118: $file=~s-^/adm/coursedocs/showdoc/-/-;
15119: }
15120:
15121: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
15122: $location = $file;
15123: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
15124: my ($udom,$uname,$filename)=
15125: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
15126: my $home=&homeserver($uname,$udom);
15127: my $is_me=0;
15128: my @ids=¤t_machine_ids();
15129: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
15130: if ($is_me) {
15131: $location=propath($udom,$uname).'/userfiles/'.$filename;
15132: } else {
15133: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
15134: $udom.'/'.$uname.'/'.$filename;
15135: }
15136: } elsif ($file =~ m-^/adm/-) {
15137: $location = $perlvar{'lonDocRoot'}.'/'.$file;
15138: } else {
15139: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
15140: $file=~s:^/(res|priv)/:/:;
15141: my $space=$1;
15142: if ( !( $file =~ m:^/:) ) {
15143: $location = $dir. '/'.$file;
15144: } else {
15145: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
15146: }
15147: }
15148: $location=~s://+:/:g; # remove duplicate /
15149: while ($location=~m{/\.\./}) {
15150: if ($location =~ m{/[^/]+/\.\./}) {
15151: $location=~ s{/[^/]+/\.\./}{/}g;
15152: } else {
15153: $location=~ s{/\.\./}{/}g;
15154: }
15155: } #remove dir/..
15156: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
15157: return $location;
15158: }
15159:
15160: sub hreflocation {
15161: my ($dir,$file)=@_;
15162: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
15163: $file=filelocation($dir,$file);
15164: } elsif ($file=~m-^/adm/-) {
15165: $file=~s-^/adm/wrapper/-/-;
15166: $file=~s-^/adm/coursedocs/showdoc/-/-;
15167: }
15168: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
15169: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
15170: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
15171: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
15172: {/uploaded/$1/$2/}x;
15173: }
15174: if ($file=~ m{^/userfiles/}) {
15175: $file =~ s{^/userfiles/}{/uploaded/};
15176: }
15177: return $file;
15178: }
15179:
15180:
15181:
15182:
15183:
15184: sub current_machine_domains {
15185: return &machine_domains(&hostname($perlvar{'lonHostID'}));
15186: }
15187:
15188: sub machine_domains {
15189: my ($hostname) = @_;
15190: my @domains;
15191: my %hostname = &all_hostnames();
15192: while( my($id, $name) = each(%hostname)) {
15193: # &logthis("-$id-$name-$hostname-");
15194: if ($hostname eq $name) {
15195: push(@domains,&host_domain($id));
15196: }
15197: }
15198: return @domains;
15199: }
15200:
15201: sub current_machine_ids {
15202: return &machine_ids(&hostname($perlvar{'lonHostID'}));
15203: }
15204:
15205: sub machine_ids {
15206: my ($hostname) = @_;
15207: $hostname ||= &hostname($perlvar{'lonHostID'});
15208: my @ids;
15209: my %name_to_host = &all_names();
15210: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
15211: return @{ $name_to_host{$hostname} };
15212: }
15213: return;
15214: }
15215:
15216: sub additional_machine_domains {
15217: my @domains;
15218: if (-e "$perlvar{'lonTabDir'}/expected_domains.tab") {
15219: if (open(my $fh,"<","$perlvar{'lonTabDir'}/expected_domains.tab")) {
15220: while (my $line = <$fh>) {
15221: chomp($line);
15222: $line =~ s/\s//g;
15223: push(@domains,$line);
15224: }
15225: close($fh);
15226: }
15227: }
15228: return @domains;
15229: }
15230:
15231: sub default_login_domain {
15232: my $domain = $perlvar{'lonDefDomain'};
15233: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
15234: foreach my $posdom (¤t_machine_domains(),
15235: &additional_machine_domains()) {
15236: if (lc($posdom) eq lc($testdomain)) {
15237: $domain=$posdom;
15238: last;
15239: }
15240: }
15241: return $domain;
15242: }
15243:
15244: sub shared_institution {
15245: my ($dom,$lonhost) = @_;
15246: if ($lonhost eq '') {
15247: $lonhost = $perlvar{'lonHostID'};
15248: }
15249: my $same_intdom;
15250: my $hostintdom = &internet_dom($lonhost);
15251: if ($hostintdom ne '') {
15252: my %iphost = &get_iphost();
15253: my $primary_id = &domain($dom,'primary');
15254: my $primary_ip = &get_host_ip($primary_id);
15255: if (ref($iphost{$primary_ip}) eq 'ARRAY') {
15256: foreach my $id (@{$iphost{$primary_ip}}) {
15257: my $intdom = &internet_dom($id);
15258: if ($intdom eq $hostintdom) {
15259: $same_intdom = 1;
15260: last;
15261: }
15262: }
15263: }
15264: }
15265: return $same_intdom;
15266: }
15267:
15268: sub uses_sts {
15269: my ($ignore_cache) = @_;
15270: my $lonhost = $perlvar{'lonHostID'};
15271: my $hostname = &hostname($lonhost);
15272: my $sts_on;
15273: if ($protocol{$lonhost} eq 'https') {
15274: my $cachetime = 12*3600;
15275: if (!$ignore_cache) {
15276: ($sts_on,my $cached)=&is_cached_new('stspolicy',$lonhost);
15277: if (defined($cached)) {
15278: return $sts_on;
15279: }
15280: }
15281: my $url = $protocol{$lonhost}.'://'.$hostname.'/index.html';
15282: my $request=new HTTP::Request('HEAD',$url);
15283: my $response=&LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,'','','',1);
15284: if ($response->is_success) {
15285: my $has_sts = $response->header('Strict-Transport-Security');
15286: if ($has_sts eq '') {
15287: $sts_on = 0;
15288: } else {
15289: if ($has_sts =~ /\Qmax-age=\E(\d+)/) {
15290: my $maxage = $1;
15291: if ($maxage) {
15292: $sts_on = 1;
15293: } else {
15294: $sts_on = 0;
15295: }
15296: } else {
15297: $sts_on = 0;
15298: }
15299: }
15300: return &do_cache_new('stspolicy',$lonhost,$sts_on,$cachetime);
15301: }
15302: }
15303: return;
15304: }
15305:
15306: sub waf_allssl {
15307: my ($host_name) = @_;
15308: my $alias = &get_proxy_alias();
15309: if ($host_name eq '') {
15310: $host_name = $ENV{'SERVER_NAME'};
15311: }
15312: if (($host_name ne '') && ($alias eq $host_name)) {
15313: my $serverhomedom = &host_domain($perlvar{'lonHostID'});
15314: my %defdomdefaults = &get_domain_defaults($serverhomedom);
15315: if ($defdomdefaults{'waf_sslopt'}) {
15316: return $defdomdefaults{'waf_sslopt'};
15317: }
15318: }
15319: return;
15320: }
15321:
15322: sub get_requestor_ip {
15323: my ($r,$nolookup,$noproxy) = @_;
15324: my $from_ip;
15325: if (ref($r)) {
15326: if ($r->can('useragent_ip')) {
15327: if ($noproxy && $r->can('client_ip')) {
15328: $from_ip = $r->client_ip();
15329: } else {
15330: $from_ip = $r->useragent_ip();
15331: }
15332: } elsif ($r->connection->can('remote_ip')) {
15333: $from_ip = $r->connection->remote_ip();
15334: } else {
15335: $from_ip = $r->get_remote_host($nolookup);
15336: }
15337: } else {
15338: $from_ip = $ENV{'REMOTE_ADDR'};
15339: }
15340: return $from_ip if ($noproxy);
15341: # Who controls proxy settings for server
15342: my $dom_in_use = $Apache::lonnet::perlvar{'lonDefDomain'};
15343: my $proxyinfo = &get_proxy_settings($dom_in_use);
15344: if ((ref($proxyinfo) eq 'HASH') && ($from_ip)) {
15345: if ($proxyinfo->{'vpnint'}) {
15346: if (&ip_match($from_ip,$proxyinfo->{'vpnint'})) {
15347: return $from_ip;
15348: }
15349: }
15350: if ($proxyinfo->{'trusted'}) {
15351: if (&ip_match($from_ip,$proxyinfo->{'trusted'})) {
15352: my $ipheader = $proxyinfo->{'ipheader'};
15353: my ($ip,$xfor);
15354: if (ref($r)) {
15355: if ($ipheader) {
15356: $ip = $r->headers_in->{$ipheader};
15357: }
15358: $xfor = $r->headers_in->{'X-Forwarded-For'};
15359: } else {
15360: if ($ipheader) {
15361: $ip = $ENV{'HTTP_'.uc($ipheader)};
15362: }
15363: $xfor = $ENV{'HTTP_X_FORWARDED_FOR'};
15364: }
15365: if (($ip eq '') && ($xfor ne '')) {
15366: foreach my $poss_ip (reverse(split(/\s*,\s*/,$xfor))) {
15367: unless (&ip_match($poss_ip,$proxyinfo->{'trusted'})) {
15368: $ip = $poss_ip;
15369: last;
15370: }
15371: }
15372: }
15373: if ($ip ne '') {
15374: return $ip;
15375: }
15376: }
15377: }
15378: }
15379: return $from_ip;
15380: }
15381:
15382: sub get_proxy_settings {
15383: my ($dom_in_use) = @_;
15384: my %domdefaults = &get_domain_defaults($dom_in_use);
15385: my $proxyinfo = {
15386: ipheader => $domdefaults{'waf_ipheader'},
15387: trusted => $domdefaults{'waf_trusted'},
15388: vpnint => $domdefaults{'waf_vpnint'},
15389: vpnext => $domdefaults{'waf_vpnext'},
15390: sslopt => $domdefaults{'waf_sslopt'},
15391: };
15392: return $proxyinfo;
15393: }
15394:
15395: sub ip_match {
15396: my ($ip,$pattern_str) = @_;
15397: $ip=Net::CIDR::cidrvalidate($ip);
15398: if ($ip) {
15399: return Net::CIDR::cidrlookup($ip,split(/\s*,\s*/,$pattern_str));
15400: }
15401: return;
15402: }
15403:
15404: sub get_proxy_alias {
15405: my ($lonid) = @_;
15406: if ($lonid eq '') {
15407: $lonid = $perlvar{'lonHostID'};
15408: }
15409: if (!defined(&hostname($lonid))) {
15410: return;
15411: }
15412: if ($lonid ne '') {
15413: my ($alias,$cached) = &is_cached_new('proxyalias',$lonid);
15414: if ($cached) {
15415: return $alias;
15416: }
15417: my $dom = &host_domain($lonid);
15418: if ($dom ne '') {
15419: my $cachetime = 60*60*24;
15420: my %domconfig =
15421: &get_dom('configuration',['wafproxy'],$dom);
15422: if (ref($domconfig{'wafproxy'}) eq 'HASH') {
15423: if (ref($domconfig{'wafproxy'}{'alias'}) eq 'HASH') {
15424: $alias = $domconfig{'wafproxy'}{'alias'}{$lonid};
15425: }
15426: }
15427: return &do_cache_new('proxyalias',$lonid,$alias,$cachetime);
15428: }
15429: }
15430: return;
15431: }
15432:
15433: sub use_proxy_alias {
15434: my ($r,$lonid) = @_;
15435: my $alias = &get_proxy_alias($lonid);
15436: if ($alias) {
15437: my $dom = &host_domain($lonid);
15438: if ($dom ne '') {
15439: my $proxyinfo = &get_proxy_settings($dom);
15440: my ($vpnint,$remote_ip);
15441: if (ref($proxyinfo) eq 'HASH') {
15442: $vpnint = $proxyinfo->{'vpnint'};
15443: if ($vpnint) {
15444: $remote_ip = &get_requestor_ip($r,1,1);
15445: }
15446: }
15447: unless ($vpnint && &ip_match($remote_ip,$vpnint)) {
15448: return $alias;
15449: }
15450: }
15451: }
15452: return;
15453: }
15454:
15455: sub alias_sso {
15456: my ($lonid) = @_;
15457: if ($lonid eq '') {
15458: $lonid = $perlvar{'lonHostID'};
15459: }
15460: if (!defined(&hostname($lonid))) {
15461: return;
15462: }
15463: if ($lonid ne '') {
15464: my ($use_alias,$cached) = &is_cached_new('proxysaml',$lonid);
15465: if ($cached) {
15466: return $use_alias;
15467: }
15468: my $dom = &host_domain($lonid);
15469: if ($dom ne '') {
15470: my $cachetime = 60*60*24;
15471: my %domconfig =
15472: &get_dom('configuration',['wafproxy'],$dom);
15473: if (ref($domconfig{'wafproxy'}) eq 'HASH') {
15474: if (ref($domconfig{'wafproxy'}{'saml'}) eq 'HASH') {
15475: $use_alias = $domconfig{'wafproxy'}{'saml'}{$lonid};
15476: }
15477: }
15478: return &do_cache_new('proxysaml',$lonid,$use_alias,$cachetime);
15479: }
15480: }
15481: return;
15482: }
15483:
15484: sub get_saml_landing {
15485: my ($lonid) = @_;
15486: if ($lonid eq '') {
15487: my $defdom = &default_login_domain();
15488: my @hosts = ¤t_machine_ids();
15489: if (@hosts > 1) {
15490: foreach my $hostid (@hosts) {
15491: if (&host_domain($hostid) eq $defdom) {
15492: $lonid = $hostid;
15493: last;
15494: }
15495: }
15496: } else {
15497: $lonid = $perlvar{'lonHostID'};
15498: }
15499: if ($lonid) {
15500: unless (&host_domain($lonid) eq $defdom) {
15501: return;
15502: }
15503: } else {
15504: return;
15505: }
15506: } elsif (!defined(&hostname($lonid))) {
15507: return;
15508: }
15509: my ($landing,$cached) = &is_cached_new('samllanding',$lonid);
15510: if ($cached) {
15511: return $landing;
15512: }
15513: my $dom = &host_domain($lonid);
15514: if ($dom ne '') {
15515: my $cachetime = 60*60*24;
15516: my %domconfig =
15517: &get_dom('configuration',['login'],$dom);
15518: if (ref($domconfig{'login'}) eq 'HASH') {
15519: if (ref($domconfig{'login'}{'saml'}) eq 'HASH') {
15520: if (ref($domconfig{'login'}{'saml'}{$lonid}) eq 'HASH') {
15521: $landing = 1;
15522: }
15523: }
15524: }
15525: return &do_cache_new('samllanding',$lonid,$landing,$cachetime);
15526: }
15527: return;
15528: }
15529:
15530: # ------------------------------------------------------------- Declutters URLs
15531:
15532: sub declutter {
15533: my $thisfn=shift;
15534: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
15535: unless ($thisfn=~m{^/home/httpd/html/priv/}) {
15536: $thisfn=~s{^/home/httpd/html}{};
15537: }
15538: $thisfn=~s/^\///;
15539: $thisfn=~s|^adm/wrapper/||;
15540: $thisfn=~s|^adm/coursedocs/showdoc/||;
15541: $thisfn=~s/^res\///;
15542: $thisfn=~s/^priv\///;
15543: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
15544: $thisfn=~s/\?.+$//;
15545: }
15546: return $thisfn;
15547: }
15548:
15549: # ------------------------------------------------------------- Clutter up URLs
15550:
15551: sub clutter {
15552: my $thisfn='/'.&declutter(shift);
15553: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
15554: || $thisfn =~ m{^/adm/(includes|pages)} ) {
15555: $thisfn='/res'.$thisfn;
15556: }
15557: if ($thisfn !~m|^/adm|) {
15558: if ($thisfn =~ m|^/ext/|) {
15559: $thisfn='/adm/wrapper'.$thisfn;
15560: } else {
15561: my ($ext) = ($thisfn =~ /\.(\w+)$/);
15562: my $embstyle=&Apache::loncommon::fileembstyle($ext);
15563: if ($embstyle eq 'ssi'
15564: || ($embstyle eq 'hdn')
15565: || ($embstyle eq 'rat')
15566: || ($embstyle eq 'prv')
15567: || ($embstyle eq 'ign')) {
15568: #do nothing with these
15569: } elsif (($embstyle eq 'img')
15570: || ($embstyle eq 'emb')
15571: || ($embstyle eq 'wrp')) {
15572: $thisfn='/adm/wrapper'.$thisfn;
15573: } elsif ($embstyle eq 'unk'
15574: && $thisfn!~/\.(sequence|page)$/) {
15575: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
15576: } else {
15577: # &logthis("Got a blank emb style");
15578: }
15579: }
15580: } elsif ($thisfn =~ m{^/adm/$match_domain/$match_courseid/\d+/ext\.tool$}) {
15581: $thisfn='/adm/wrapper'.$thisfn;
15582: }
15583: return $thisfn;
15584: }
15585:
15586: sub clutter_with_no_wrapper {
15587: my $uri = &clutter(shift);
15588: if ($uri =~ m-^/adm/-) {
15589: $uri =~ s-^/adm/wrapper/-/-;
15590: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
15591: }
15592: return $uri;
15593: }
15594:
15595: sub freeze_escape {
15596: my ($value)=@_;
15597: if (ref($value)) {
15598: $value=&nfreeze($value);
15599: return '__FROZEN__'.&escape($value);
15600: }
15601: return &escape($value);
15602: }
15603:
15604:
15605: sub thaw_unescape {
15606: my ($value)=@_;
15607: if ($value =~ /^__FROZEN__/) {
15608: substr($value,0,10,undef);
15609: $value=&unescape($value);
15610: return &thaw($value);
15611: }
15612: return &unescape($value);
15613: }
15614:
15615: sub correct_line_ends {
15616: my ($result)=@_;
15617: $$result =~s/\r\n/\n/mg;
15618: $$result =~s/\r/\n/mg;
15619: }
15620: # ================================================================ Main Program
15621:
15622: sub goodbye {
15623: &logthis("Starting Shut down");
15624: #not converted to using infrastruture and probably shouldn't be
15625: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
15626: #converted
15627: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
15628: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
15629: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
15630: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
15631: #1.1 only
15632: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
15633: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
15634: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
15635: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
15636: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
15637: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
15638: &logthis(sprintf("%-20s is %s",'hits',$hits));
15639: &flushcourselogs();
15640: &logthis("Shutting down");
15641: }
15642:
15643: sub get_dns {
15644: my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
15645: if (!$ignore_cache) {
15646: my ($content,$cached)=
15647: &is_cached_new('dns',$url);
15648: if ($cached) {
15649: &$func($content,$hashref);
15650: return;
15651: }
15652: }
15653:
15654: my %alldns;
15655: if (open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab")) {
15656: foreach my $dns (<$config>) {
15657: next if ($dns !~ /^\^(\S*)/x);
15658: my $line = $1;
15659: my ($host,$protocol) = split(/:/,$line);
15660: if ($protocol ne 'https') {
15661: $protocol = 'http';
15662: }
15663: $alldns{$host} = $protocol;
15664: }
15665: close($config);
15666: }
15667: while (%alldns) {
15668: my ($dns) = sort { $b cmp $a } keys(%alldns);
15669: my ($contents,@content);
15670: if ($dns eq Sys::Hostname::FQDN::fqdn()) {
15671: my $command = (split('/',$url))[3];
15672: my ($dir,$file) = &parse_getdns_url($command,$url);
15673: delete($alldns{$dns});
15674: next if (($dir eq '') || ($file eq ''));
15675: if (open(my $config,'<',"$dir/$file")) {
15676: @content = <$config>;
15677: close($config);
15678: }
15679: if ($url eq '/adm/dns/loncapaCRL') {
15680: $contents = join('',@content);
15681: }
15682: } else {
15683: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
15684: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar,30,0);
15685: delete($alldns{$dns});
15686: next if ($response->is_error());
15687: if ($url eq '/adm/dns/loncapaCRL') {
15688: $contents = $response->content;
15689: } else {
15690: @content = split("\n",$response->content);
15691: }
15692: }
15693: if ($url eq '/adm/dns/loncapaCRL') {
15694: return &$func($contents);
15695: } else {
15696: unless ($nocache) {
15697: &do_cache_new('dns',$url,\@content,30*24*60*60);
15698: }
15699: &$func(\@content,$hashref);
15700: return;
15701: }
15702: }
15703: my $which = (split('/',$url,4))[3];
15704: if ($which eq 'loncapaCRL') {
15705: my $diskfile = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
15706: if (-e $diskfile) {
15707: &logthis("unable to contact DNS, on disk file $diskfile not updated");
15708: } else {
15709: &logthis("unable to contact DNS, no on disk file $diskfile available");
15710: }
15711: } else {
15712: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
15713: if (open(my $config,"<","$perlvar{'lonTabDir'}/dns_$which.tab")) {
15714: my @content = <$config>;
15715: close($config);
15716: &$func(\@content,$hashref);
15717: }
15718: }
15719: return;
15720: }
15721:
15722: # ------------------------------------------------------Get DNS checksums file
15723: sub parse_dns_checksums_tab {
15724: my ($lines,$hashref) = @_;
15725: my $lonhost = $perlvar{'lonHostID'};
15726: my $machine_dom = &host_domain($lonhost);
15727: my $loncaparev = &get_server_loncaparev($machine_dom);
15728: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
15729: my $webconfdir = '/etc/httpd/conf';
15730: if ($distro =~ /^(ubuntu|debian)(\d+)$/) {
15731: $webconfdir = '/etc/apache2';
15732: } elsif ($distro =~ /^sles(\d+)$/) {
15733: if ($1 >= 10) {
15734: $webconfdir = '/etc/apache2';
15735: }
15736: } elsif ($distro =~ /^suse(\d+\.\d+)$/) {
15737: if ($1 >= 10.0) {
15738: $webconfdir = '/etc/apache2';
15739: }
15740: }
15741: my ($release,$timestamp) = split(/\-/,$loncaparev);
15742: my (%chksum,%revnum);
15743: if (ref($lines) eq 'ARRAY') {
15744: chomp(@{$lines});
15745: my $version = shift(@{$lines});
15746: if ($version eq $release) {
15747: foreach my $line (@{$lines}) {
15748: my ($file,$version,$shasum) = split(/,/,$line);
15749: if ($file =~ m{^/etc/httpd/conf}) {
15750: if ($webconfdir eq '/etc/apache2') {
15751: $file =~ s{^\Q/etc/httpd/conf/\E}{$webconfdir/};
15752: }
15753: }
15754: $chksum{$file} = $shasum;
15755: $revnum{$file} = $version;
15756: }
15757: if (ref($hashref) eq 'HASH') {
15758: %{$hashref} = (
15759: sums => \%chksum,
15760: versions => \%revnum,
15761: );
15762: }
15763: }
15764: }
15765: return;
15766: }
15767:
15768: sub fetch_dns_checksums {
15769: my %checksums;
15770: my $machine_dom = &host_domain($perlvar{'lonHostID'});
15771: my $loncaparev = &get_server_loncaparev($machine_dom,$perlvar{'lonHostID'});
15772: my ($release,$timestamp) = split(/\-/,$loncaparev);
15773: &get_dns("/adm/dns/checksums/$release",\&parse_dns_checksums_tab,1,1,
15774: \%checksums);
15775: return \%checksums;
15776: }
15777:
15778: sub fetch_crl_pemfile {
15779: return &get_dns("/adm/dns/loncapaCRL",\&save_crl_pem,1,1);
15780: }
15781:
15782: sub save_crl_pem {
15783: my ($content) = @_;
15784: my ($msg,$hadchanges);
15785: if ($content ne '') {
15786: my $now = time;
15787: my $lonca = $perlvar{'lonCertificateDirectory'}.'/'.$perlvar{'lonnetCertificateAuthority'};
15788: my $tmpcrl = $tmpdir.'/'.$perlvar{'lonnetCertRevocationList'}.'_'.$now.'.'.$$.'.tmp';
15789: if (open(my $fh,'>',"$tmpcrl")) {
15790: print $fh $content;
15791: close($fh);
15792: if (-e $lonca) {
15793: if (open(PIPE,"openssl crl -in $tmpcrl -inform pem -CAfile $lonca -noout 2>&1 |")) {
15794: my $check = <PIPE>;
15795: close(PIPE);
15796: chomp($check);
15797: if ($check eq 'verify OK') {
15798: my $dest = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
15799: my $backup;
15800: if (-e $dest) {
15801: if (&File::Copy::move($dest,"$dest.bak")) {
15802: $backup = 'ok';
15803: }
15804: }
15805: if (&File::Copy::move($tmpcrl,$dest)) {
15806: $msg = 'ok';
15807: if ($backup) {
15808: my (%oldnums,%newnums);
15809: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest.bak |grep 'Serial Number' |")) {
15810: while (<PIPE>) {
15811: $oldnums{(split(/:/))[1]} = 1;
15812: }
15813: close(PIPE);
15814: }
15815: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest |grep 'Serial Number' |")) {
15816: while(<PIPE>) {
15817: $newnums{(split(/:/))[1]} = 1;
15818: }
15819: close(PIPE);
15820: }
15821: foreach my $key (sort {$b <=> $a } (keys(%newnums))) {
15822: unless (exists($oldnums{$key})) {
15823: $hadchanges = 1;
15824: last;
15825: }
15826: }
15827: unless ($hadchanges) {
15828: foreach my $key (sort {$b <=> $a } (keys(%oldnums))) {
15829: unless (exists($newnums{$key})) {
15830: $hadchanges = 1;
15831: last;
15832: }
15833: }
15834: }
15835: }
15836: }
15837: } else {
15838: unlink($tmpcrl);
15839: }
15840: } else {
15841: unlink($tmpcrl);
15842: }
15843: } else {
15844: unlink($tmpcrl);
15845: }
15846: }
15847: }
15848: return ($msg,$hadchanges);
15849: }
15850:
15851: sub parse_getdns_url {
15852: my ($command,$url) = @_;
15853: my $dir = $perlvar{'lonTabDir'};
15854: my $file;
15855: if ($command eq 'hosts') {
15856: $file = 'dns_hosts.tab';
15857: } elsif ($command eq 'domain') {
15858: $file = 'dns_domain.tab';
15859: } elsif ($command eq 'checksums') {
15860: my $version = (split('/',$url))[4];
15861: $file = "dns_checksums/$version.tab",
15862: } elsif ($command eq 'loncapaCRL') {
15863: $dir = $perlvar{'lonCertificateDirectory'};
15864: $file = $perlvar{'lonnetCertRevocationList'};
15865: }
15866: return ($dir,$file);
15867: }
15868:
15869: # ------------------------------------------------------------ Read domain file
15870: {
15871: my $loaded;
15872: my %domain;
15873:
15874: sub parse_domain_tab {
15875: my ($lines) = @_;
15876: foreach my $line (@$lines) {
15877: next if ($line =~ /^(\#|\s*$ )/x);
15878:
15879: chomp($line);
15880: my ($name,@elements) = split(/:/,$line,9);
15881: my %this_domain;
15882: foreach my $field ('description', 'auth_def', 'auth_arg_def',
15883: 'lang_def', 'city', 'longi', 'lati',
15884: 'primary') {
15885: $this_domain{$field} = shift(@elements);
15886: }
15887: $domain{$name} = \%this_domain;
15888: }
15889: }
15890:
15891: sub reset_domain_info {
15892: undef($loaded);
15893: undef(%domain);
15894: }
15895:
15896: sub load_domain_tab {
15897: my ($ignore_cache,$nocache) = @_;
15898: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache,$nocache);
15899: my $fh;
15900: if (open($fh,"<",$perlvar{'lonTabDir'}.'/domain.tab')) {
15901: my @lines = <$fh>;
15902: &parse_domain_tab(\@lines);
15903: }
15904: close($fh);
15905: $loaded = 1;
15906: }
15907:
15908: sub domain {
15909: &load_domain_tab() if (!$loaded);
15910:
15911: my ($name,$what) = @_;
15912: return if ( !exists($domain{$name}) );
15913:
15914: if (!$what) {
15915: return $domain{$name}{'description'};
15916: }
15917: return $domain{$name}{$what};
15918: }
15919:
15920: sub domain_info {
15921: &load_domain_tab() if (!$loaded);
15922: return %domain;
15923: }
15924:
15925: }
15926:
15927:
15928: # ------------------------------------------------------------- Read hosts file
15929: {
15930: my %hostname;
15931: my %hostdom;
15932: my %libserv;
15933: my $loaded;
15934: my %name_to_host;
15935: my %internetdom;
15936: my %LC_dns_serv;
15937:
15938: sub parse_hosts_tab {
15939: my ($file) = @_;
15940: foreach my $configline (@$file) {
15941: next if ($configline =~ /^(\#|\s*$ )/x);
15942: chomp($configline);
15943: if ($configline =~ /^\^/) {
15944: if ($configline =~ /^\^([\w.\-]+)/) {
15945: $LC_dns_serv{$1} = 1;
15946: }
15947: next;
15948: }
15949: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
15950: $name=~s/\s//g;
15951: if ($id && $domain && $role && $name) {
15952: if ((exists($hostname{$id})) && ($hostname{$id} ne '')) {
15953: my $curr = $hostname{$id};
15954: my $skip;
15955: if (ref($name_to_host{$curr}) eq 'ARRAY') {
15956: if (($curr eq $name) && (@{$name_to_host{$curr}} == 1)) {
15957: $skip = 1;
15958: } else {
15959: @{$name_to_host{$curr}} = grep { $_ ne $id } @{$name_to_host{$curr}};
15960: }
15961: }
15962: unless ($skip) {
15963: push(@{$name_to_host{$name}},$id);
15964: }
15965: } else {
15966: push(@{$name_to_host{$name}},$id);
15967: }
15968: $hostname{$id}=$name;
15969: $hostdom{$id}=$domain;
15970: if ($role eq 'library') { $libserv{$id}=$name; }
15971: if (defined($protocol)) {
15972: if ($protocol eq 'https') {
15973: $protocol{$id} = $protocol;
15974: } else {
15975: $protocol{$id} = 'http';
15976: }
15977: } else {
15978: $protocol{$id} = 'http';
15979: }
15980: if (defined($intdom)) {
15981: $internetdom{$id} = $intdom;
15982: }
15983: }
15984: }
15985: }
15986:
15987: sub reset_hosts_info {
15988: &purge_remembered();
15989: &reset_domain_info();
15990: &reset_hosts_ip_info();
15991: undef(%internetdom);
15992: undef(%name_to_host);
15993: undef(%hostname);
15994: undef(%hostdom);
15995: undef(%libserv);
15996: undef($loaded);
15997: }
15998:
15999: sub load_hosts_tab {
16000: my ($ignore_cache,$nocache) = @_;
16001: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache,$nocache);
16002: open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab");
16003: my @config = <$config>;
16004: &parse_hosts_tab(\@config);
16005: close($config);
16006: $loaded=1;
16007: }
16008:
16009: sub hostname {
16010: &load_hosts_tab() if (!$loaded);
16011:
16012: my ($lonid) = @_;
16013: return $hostname{$lonid};
16014: }
16015:
16016: sub all_hostnames {
16017: &load_hosts_tab() if (!$loaded);
16018:
16019: return %hostname;
16020: }
16021:
16022: sub all_names {
16023: my ($ignore_cache,$nocache) = @_;
16024: &load_hosts_tab($ignore_cache,$nocache) if (!$loaded);
16025:
16026: return %name_to_host;
16027: }
16028:
16029: sub all_host_domain {
16030: &load_hosts_tab() if (!$loaded);
16031: return %hostdom;
16032: }
16033:
16034: sub all_host_intdom {
16035: &load_hosts_tab() if (!$loaded);
16036: return %internetdom;
16037: }
16038:
16039: sub is_library {
16040: &load_hosts_tab() if (!$loaded);
16041:
16042: return exists($libserv{$_[0]});
16043: }
16044:
16045: sub all_library {
16046: &load_hosts_tab() if (!$loaded);
16047:
16048: return %libserv;
16049: }
16050:
16051: sub unique_library {
16052: #2x reverse removes all hostnames that appear more than once
16053: my %unique = reverse &all_library();
16054: return reverse %unique;
16055: }
16056:
16057: sub get_servers {
16058: &load_hosts_tab() if (!$loaded);
16059:
16060: my ($domain,$type) = @_;
16061: my %possible_hosts = ($type eq 'library') ? %libserv
16062: : %hostname;
16063: my %result;
16064: if (ref($domain) eq 'ARRAY') {
16065: while ( my ($host,$hostname) = each(%possible_hosts)) {
16066: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
16067: $result{$host} = $hostname;
16068: }
16069: }
16070: } else {
16071: while ( my ($host,$hostname) = each(%possible_hosts)) {
16072: if ($hostdom{$host} eq $domain) {
16073: $result{$host} = $hostname;
16074: }
16075: }
16076: }
16077: return %result;
16078: }
16079:
16080: sub get_unique_servers {
16081: my %unique = reverse &get_servers(@_);
16082: return reverse %unique;
16083: }
16084:
16085: sub host_domain {
16086: &load_hosts_tab() if (!$loaded);
16087:
16088: my ($lonid) = @_;
16089: return $hostdom{$lonid};
16090: }
16091:
16092: sub all_domains {
16093: &load_hosts_tab() if (!$loaded);
16094:
16095: my %seen;
16096: my @uniq = grep(!$seen{$_}++, values(%hostdom));
16097: return @uniq;
16098: }
16099:
16100: sub internet_dom {
16101: &load_hosts_tab() if (!$loaded);
16102:
16103: my ($lonid) = @_;
16104: return $internetdom{$lonid};
16105: }
16106:
16107: sub is_LC_dns {
16108: &load_hosts_tab() if (!$loaded);
16109:
16110: my ($hostname) = @_;
16111: return exists($LC_dns_serv{$hostname});
16112: }
16113:
16114: }
16115:
16116: {
16117: my %iphost;
16118: my %name_to_ip;
16119: my %lonid_to_ip;
16120:
16121: sub get_hosts_from_ip {
16122: my ($ip) = @_;
16123: my %iphosts = &get_iphost();
16124: if (ref($iphosts{$ip})) {
16125: return @{$iphosts{$ip}};
16126: }
16127: return;
16128: }
16129:
16130: sub reset_hosts_ip_info {
16131: undef(%iphost);
16132: undef(%name_to_ip);
16133: undef(%lonid_to_ip);
16134: }
16135:
16136: sub get_host_ip {
16137: my ($lonid) = @_;
16138: if (exists($lonid_to_ip{$lonid})) {
16139: return $lonid_to_ip{$lonid};
16140: }
16141: my $name=&hostname($lonid);
16142: my $ip = gethostbyname($name);
16143: return if (!$ip || length($ip) ne 4);
16144: $ip=inet_ntoa($ip);
16145: $name_to_ip{$name} = $ip;
16146: $lonid_to_ip{$lonid} = $ip;
16147: return $ip;
16148: }
16149:
16150: sub get_iphost {
16151: my ($ignore_cache,$nocache) = @_;
16152:
16153: if (!$ignore_cache) {
16154: if (%iphost) {
16155: return %iphost;
16156: }
16157: my ($ip_info,$cached)=
16158: &is_cached_new('iphost','iphost');
16159: if ($cached) {
16160: %iphost = %{$ip_info->[0]};
16161: %name_to_ip = %{$ip_info->[1]};
16162: %lonid_to_ip = %{$ip_info->[2]};
16163: return %iphost;
16164: }
16165: }
16166:
16167: # get yesterday's info for fallback
16168: my %old_name_to_ip;
16169: my ($ip_info,$cached)=
16170: &is_cached_new('iphost','iphost');
16171: if ($cached) {
16172: %old_name_to_ip = %{$ip_info->[1]};
16173: }
16174:
16175: my %name_to_host = &all_names($ignore_cache,$nocache);
16176: foreach my $name (keys(%name_to_host)) {
16177: my $ip;
16178: if (!exists($name_to_ip{$name})) {
16179: $ip = gethostbyname($name);
16180: if (!$ip || length($ip) ne 4) {
16181: if (defined($old_name_to_ip{$name})) {
16182: $ip = $old_name_to_ip{$name};
16183: &logthis("Can't find $name defaulting to old $ip");
16184: } else {
16185: &logthis("Name $name no IP found");
16186: next;
16187: }
16188: } else {
16189: $ip=inet_ntoa($ip);
16190: }
16191: $name_to_ip{$name} = $ip;
16192: } else {
16193: $ip = $name_to_ip{$name};
16194: }
16195: foreach my $id (@{ $name_to_host{$name} }) {
16196: $lonid_to_ip{$id} = $ip;
16197: }
16198: push(@{$iphost{$ip}},@{$name_to_host{$name}});
16199: }
16200: unless ($nocache) {
16201: &do_cache_new('iphost','iphost',
16202: [\%iphost,\%name_to_ip,\%lonid_to_ip],
16203: 48*60*60);
16204: }
16205:
16206: return %iphost;
16207: }
16208:
16209: #
16210: # Given a DNS returns the loncapa host name for that DNS
16211: #
16212: sub host_from_dns {
16213: my ($dns) = @_;
16214: my @hosts;
16215: my $ip;
16216:
16217: if (exists($name_to_ip{$dns})) {
16218: $ip = $name_to_ip{$dns};
16219: }
16220: if (!$ip) {
16221: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
16222: if (length($ip) == 4) {
16223: $ip = &IO::Socket::inet_ntoa($ip);
16224: }
16225: }
16226: if ($ip) {
16227: @hosts = get_hosts_from_ip($ip);
16228: return $hosts[0];
16229: }
16230: return undef;
16231: }
16232:
16233: sub get_internet_names {
16234: my ($lonid) = @_;
16235: return if ($lonid eq '');
16236: my ($idnref,$cached)=
16237: &is_cached_new('internetnames',$lonid);
16238: if ($cached) {
16239: return $idnref;
16240: }
16241: my $ip = &get_host_ip($lonid);
16242: my @hosts = &get_hosts_from_ip($ip);
16243: my %iphost = &get_iphost();
16244: my (@idns,%seen);
16245: foreach my $id (@hosts) {
16246: my $dom = &host_domain($id);
16247: my $prim_id = &domain($dom,'primary');
16248: my $prim_ip = &get_host_ip($prim_id);
16249: next if ($seen{$prim_ip});
16250: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
16251: foreach my $id (@{$iphost{$prim_ip}}) {
16252: my $intdom = &internet_dom($id);
16253: unless (grep(/^\Q$intdom\E$/,@idns)) {
16254: push(@idns,$intdom);
16255: }
16256: }
16257: }
16258: $seen{$prim_ip} = 1;
16259: }
16260: return &do_cache_new('internetnames',$lonid,\@idns,12*60*60);
16261: }
16262:
16263: }
16264:
16265: sub all_loncaparevs {
16266: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11);
16267: }
16268:
16269: # ---------------------------------------------------------- Read loncaparev table
16270: {
16271: sub load_loncaparevs {
16272: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
16273: if (open(my $config,"<","$perlvar{'lonTabDir'}/loncaparevs.tab")) {
16274: while (my $configline=<$config>) {
16275: chomp($configline);
16276: my ($hostid,$loncaparev)=split(/:/,$configline);
16277: $loncaparevs{$hostid}=$loncaparev;
16278: }
16279: close($config);
16280: }
16281: }
16282: }
16283: }
16284:
16285: # ---------------------------------------------------------- Read serverhostID table
16286: {
16287: sub load_serverhomeIDs {
16288: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
16289: if (open(my $config,"<","$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
16290: while (my $configline=<$config>) {
16291: chomp($configline);
16292: my ($name,$id)=split(/:/,$configline);
16293: $serverhomeIDs{$name}=$id;
16294: }
16295: close($config);
16296: }
16297: }
16298: }
16299: }
16300:
16301:
16302: BEGIN {
16303:
16304: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
16305: unless ($readit) {
16306: {
16307: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
16308: %perlvar = (%perlvar,%{$configvars});
16309: }
16310:
16311:
16312: # ------------------------------------------------------ Read spare server file
16313: {
16314: open(my $config,"<","$perlvar{'lonTabDir'}/spare.tab");
16315:
16316: while (my $configline=<$config>) {
16317: chomp($configline);
16318: if ($configline) {
16319: my ($host,$type) = split(':',$configline,2);
16320: if (!defined($type) || $type eq '') { $type = 'default' };
16321: push(@{ $spareid{$type} }, $host);
16322: }
16323: }
16324: close($config);
16325: }
16326: # ------------------------------------------------------------ Read permissions
16327: {
16328: open(my $config,"<","$perlvar{'lonTabDir'}/roles.tab");
16329:
16330: while (my $configline=<$config>) {
16331: chomp($configline);
16332: if ($configline) {
16333: my ($role,$perm)=split(/ /,$configline);
16334: if ($perm ne '') { $pr{$role}=$perm; }
16335: }
16336: }
16337: close($config);
16338: }
16339:
16340: # -------------------------------------------- Read plain texts for permissions
16341: {
16342: open(my $config,"<","$perlvar{'lonTabDir'}/rolesplain.tab");
16343:
16344: while (my $configline=<$config>) {
16345: chomp($configline);
16346: if ($configline) {
16347: my ($short,@plain)=split(/:/,$configline);
16348: %{$prp{$short}} = ();
16349: if (@plain > 0) {
16350: $prp{$short}{'std'} = $plain[0];
16351: for (my $i=1; $i<@plain; $i++) {
16352: $prp{$short}{'alt'.$i} = $plain[$i];
16353: }
16354: }
16355: }
16356: }
16357: close($config);
16358: }
16359:
16360: # ---------------------------------------------------------- Read package table
16361: {
16362: open(my $config,"<","$perlvar{'lonTabDir'}/packages.tab");
16363:
16364: while (my $configline=<$config>) {
16365: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
16366: chomp($configline);
16367: my ($short,$plain)=split(/:/,$configline);
16368: my ($pack,$name)=split(/\&/,$short);
16369: if ($plain ne '') {
16370: $packagetab{$pack.'&'.$name.'&name'}=$name;
16371: $packagetab{$short}=$plain;
16372: }
16373: }
16374: close($config);
16375: }
16376:
16377: # ---------------------------------------------------------- Read loncaparev table
16378:
16379: &load_loncaparevs();
16380:
16381: # ---------------------------------------------------------- Read serverhostID table
16382:
16383: &load_serverhomeIDs();
16384:
16385: # ---------------------------------------------------------- Read releaseslist XML
16386: {
16387: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
16388: if (-e $file) {
16389: my $parser = HTML::LCParser->new($file);
16390: while (my $token = $parser->get_token()) {
16391: if ($token->[0] eq 'S') {
16392: my $item = $token->[1];
16393: my $name = $token->[2]{'name'};
16394: my $value = $token->[2]{'value'};
16395: my $valuematch = $token->[2]{'valuematch'};
16396: my $namematch = $token->[2]{'namematch'};
16397: if ($item eq 'parameter') {
16398: if (($namematch ne '') || (($name ne '') && ($value ne '' || $valuematch ne ''))) {
16399: my $release = $parser->get_text();
16400: $release =~ s/(^\s*|\s*$ )//gx;
16401: $needsrelease{$item.':'.$name.':'.$value.':'.$valuematch.':'.$namematch} = $release;
16402: }
16403: } elsif ($item ne '' && $name ne '') {
16404: my $release = $parser->get_text();
16405: $release =~ s/(^\s*|\s*$ )//gx;
16406: $needsrelease{$item.':'.$name.':'.$value} = $release;
16407: }
16408: }
16409: }
16410: }
16411: }
16412:
16413: # ---------------------------------------------------------- Read managers table
16414: {
16415: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
16416: if (open(my $config,"<","$perlvar{'lonTabDir'}/managers.tab")) {
16417: while (my $configline=<$config>) {
16418: chomp($configline);
16419: next if ($configline =~ /^\#/);
16420: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
16421: $managerstab{$configline} = 1;
16422: }
16423: }
16424: close($config);
16425: }
16426: }
16427: }
16428:
16429: # ------------- set up temporary directory
16430: {
16431: $tmpdir = LONCAPA::tempdir();
16432:
16433: }
16434:
16435: # ------------- set default texengine (domain default overrides this)
16436: {
16437: $deftex = LONCAPA::texengine();
16438: }
16439:
16440: # ------------- set default minimum length for passwords for internal auth users
16441: {
16442: $passwdmin = LONCAPA::passwd_min();
16443: }
16444:
16445: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
16446: 'compress_threshold'=> 20_000,
16447: });
16448:
16449: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
16450: $dumpcount=0;
16451: $locknum=0;
16452:
16453: &logtouch();
16454: &logthis('<font color="yellow">INFO: Read configuration</font>');
16455: $readit=1;
16456: {
16457: use integer;
16458: my $test=(2**32)+1;
16459: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
16460: &logthis(" Detected 64bit platform ($_64bit)");
16461: }
16462: }
16463: }
16464:
16465: 1;
16466: __END__
16467:
16468: =pod
16469:
16470: =head1 NAME
16471:
16472: Apache::lonnet - Subroutines to ask questions about things in the network.
16473:
16474: =head1 SYNOPSIS
16475:
16476: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
16477:
16478: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
16479:
16480: Common parameters:
16481:
16482: =over 4
16483:
16484: =item *
16485:
16486: $uname : an internal username (if $cname expecting a course Id specifically)
16487:
16488: =item *
16489:
16490: $udom : a domain (if $cdom expecting a course's domain specifically)
16491:
16492: =item *
16493:
16494: $symb : a resource instance identifier
16495:
16496: =item *
16497:
16498: $namespace : the name of a .db file that contains the data needed or
16499: being set.
16500:
16501: =back
16502:
16503: =head1 OVERVIEW
16504:
16505: lonnet provides subroutines which interact with the
16506: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
16507: about classes, users, and resources.
16508:
16509: For many of these objects you can also use this to store data about
16510: them or modify them in various ways.
16511:
16512: =head2 Symbs
16513:
16514: To identify a specific instance of a resource, LON-CAPA uses symbols
16515: or "symbs"X<symb>. These identifiers are built from the URL of the
16516: map, the resource number of the resource in the map, and the URL of
16517: the resource itself. The latter is somewhat redundant, but might help
16518: if maps change.
16519:
16520: An example is
16521:
16522: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
16523:
16524: The respective map entry is
16525:
16526: <resource id="19" src="/res/msu/korte/tests/part12.problem"
16527: title="Problem 2">
16528: </resource>
16529:
16530: Symbs are used by the random number generator, as well as to store and
16531: restore data specific to a certain instance of for example a problem.
16532:
16533: =head2 Storing And Retrieving Data
16534:
16535: X<store()>X<cstore()>X<restore()>Three of the most important functions
16536: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
16537: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
16538: is is the non-critical message twin of cstore. These functions are for
16539: handlers to store a perl hash to a user's permanent data space in an
16540: easy manner, and to retrieve it again on another call. It is expected
16541: that a handler would use this once at the beginning to retrieve data,
16542: and then again once at the end to send only the new data back.
16543:
16544: The data is stored in the user's data directory on the user's
16545: homeserver under the ID of the course.
16546:
16547: The hash that is returned by restore will have all of the previous
16548: value for all of the elements of the hash.
16549:
16550: Example:
16551:
16552: #creating a hash
16553: my %hash;
16554: $hash{'foo'}='bar';
16555:
16556: #storing it
16557: &Apache::lonnet::cstore(\%hash);
16558:
16559: #changing a value
16560: $hash{'foo'}='notbar';
16561:
16562: #adding a new value
16563: $hash{'bar'}='foo';
16564: &Apache::lonnet::cstore(\%hash);
16565:
16566: #retrieving the hash
16567: my %history=&Apache::lonnet::restore();
16568:
16569: #print the hash
16570: foreach my $key (sort(keys(%history))) {
16571: print("\%history{$key} = $history{$key}");
16572: }
16573:
16574: Will print out:
16575:
16576: %history{1:foo} = bar
16577: %history{1:keys} = foo:timestamp
16578: %history{1:timestamp} = 990455579
16579: %history{2:bar} = foo
16580: %history{2:foo} = notbar
16581: %history{2:keys} = foo:bar:timestamp
16582: %history{2:timestamp} = 990455580
16583: %history{bar} = foo
16584: %history{foo} = notbar
16585: %history{timestamp} = 990455580
16586: %history{version} = 2
16587:
16588: Note that the special hash entries C<keys>, C<version> and
16589: C<timestamp> were added to the hash. C<version> will be equal to the
16590: total number of versions of the data that have been stored. The
16591: C<timestamp> attribute will be the UNIX time the hash was
16592: stored. C<keys> is available in every historical section to list which
16593: keys were added or changed at a specific historical revision of a
16594: hash.
16595:
16596: B<Warning>: do not store the hash that restore returns directly. This
16597: will cause a mess since it will restore the historical keys as if the
16598: were new keys. I.E. 1:foo will become 1:1:foo etc.
16599:
16600: Calling convention:
16601:
16602: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
16603: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$laststore);
16604:
16605: For more detailed information, see lonnet specific documentation.
16606:
16607: =head1 RETURN MESSAGES
16608:
16609: =over 4
16610:
16611: =item * B<con_lost>: unable to contact remote host
16612:
16613: =item * B<con_delayed>: unable to contact remote host, message will be delivered
16614: when the connection is brought back up
16615:
16616: =item * B<con_failed>: unable to contact remote host and unable to save message
16617: for later delivery
16618:
16619: =item * B<error:>: an error a occurred, a description of the error follows the :
16620:
16621: =item * B<no_such_host>: unable to fund a host associated with the user/domain
16622: that was requested
16623:
16624: =back
16625:
16626: =head1 PUBLIC SUBROUTINES
16627:
16628: =head2 Session Environment Functions
16629:
16630: =over 4
16631:
16632: =item *
16633: X<appenv()>
16634: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
16635: the user envirnoment file, and will be restored for each access this
16636: user makes during this session, also modifies the %env for the current
16637: process. Optional rolesarrayref - if defined contains a reference to an array
16638: of roles which are exempt from the restriction on modifying user.role entries
16639: in the user's environment.db and in %env.
16640:
16641: =item *
16642: X<delenv()>
16643: B<delenv($delthis,$regexp)>: removes all items from the session
16644: environment file that begin with $delthis. If the
16645: optional second arg - $regexp - is true, $delthis is treated as a
16646: regular expression, otherwise \Q$delthis\E is used.
16647: The values are also deleted from the current processes %env.
16648:
16649: =item * get_env_multiple($name)
16650:
16651: gets $name from the %env hash, it seemlessly handles the cases where multiple
16652: values may be defined and end up as an array ref.
16653:
16654: returns an array of values
16655:
16656: =back
16657:
16658: =head2 User Information
16659:
16660: =over 4
16661:
16662: =item *
16663: X<queryauthenticate()>
16664: B<queryauthenticate($uname,$udom)>: try to determine user's current
16665: authentication scheme
16666:
16667: =item *
16668: X<authenticate()>
16669: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
16670: authenticate user from domain's lib servers (first use the current
16671: one). C<$upass> should be the users password.
16672: $checkdefauth is optional (value is 1 if a check should be made to
16673: authenticate user using default authentication method, and allow
16674: account creation if username does not have account in the domain).
16675: $clientcancheckhost is optional (value is 1 if checking whether the
16676: server can host will occur on the client side in lonauth.pm).
16677:
16678: =item *
16679: X<homeserver()>
16680: B<homeserver($uname,$udom)>: find the server which has
16681: the user's directory and files (there must be only one), this caches
16682: the answer, and also caches if there is a borken connection.
16683:
16684: =item *
16685: X<idget()>
16686: B<idget($udom,$idsref,$namespace)>: find the usernames behind either
16687: a list of student/employee IDs or clicker IDs
16688: (student/employee IDs are a unique resource in a domain, there must be
16689: only 1 ID per username, and only 1 username per ID in a specific domain).
16690: clickerIDs are not necessarily unique, as students might share clickers.
16691: (returns hash: id=>name,id=>name)
16692:
16693: =item *
16694: X<idrget()>
16695: B<idrget($udom,@unames)>: find the IDs behind a list of
16696: usernames (returns hash: name=>id,name=>id)
16697:
16698: =item *
16699: X<idput()>
16700: B<idput($udom,$idsref,$uhome,$namespace)>: store away a list of
16701: names and associated student/employee IDs or clicker IDs.
16702:
16703: =item *
16704: X<iddel()>
16705: B<iddel($udom,$idshashref,$uhome,$namespace)>: delete unwanted
16706: student/employee ID or clicker ID username look-ups from domain.
16707: The homeserver ($uhome) and namespace ($namespace) are optional.
16708: If no $uhome is provided, it will be determined usig &homeserver()
16709: for each user. If no $namespace is provided, the default is ids.
16710:
16711: =item *
16712: X<updateclickers()>
16713: B<updateclickers($udom,$action,$idshashref,$uhome,$critical)>: update
16714: clicker ID-to-username look-ups in clickers.db on library server.
16715: Permitted actions are add or del (i.e., add or delete). The
16716: clickers.db contains clickerID as keys (escaped), and each corresponding
16717: value is an escaped comma-separated list of usernames (for whom the
16718: library server is the homeserver), who registered that particular ID.
16719: If $critical is true, the update will be sent via &critical, otherwise
16720: &reply() will be used.
16721:
16722: =item *
16723: X<rolesinit()>
16724: B<rolesinit($udom,$username)>: get user privileges.
16725: returns user role, first access and timer interval hashes
16726:
16727: =item *
16728: X<privileged()>
16729: B<privileged($username,$domain)>: returns a true if user has a
16730: privileged and active role (i.e. su or dc), false otherwise.
16731:
16732: =item *
16733: X<getsection()>
16734: B<getsection($udom,$uname,$cname)>: finds the section of student in the
16735: course $cname, return section name/number or '' for "not in course"
16736: and '-1' for "no section"
16737:
16738: =item *
16739: X<userenvironment()>
16740: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
16741: passed in @what from the requested user's environment, returns a hash
16742:
16743: =item *
16744: X<userlog_query()>
16745: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
16746: activity.log file. %filters defines filters applied when parsing the
16747: log file. These can be start or end timestamps, or the type of action
16748: - log to look for Login or Logout events, check for Checkin or
16749: Checkout, role for role selection. The response is in the form
16750: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
16751: escaped strings of the action recorded in the activity.log file.
16752:
16753: =back
16754:
16755: =head2 User Roles
16756:
16757: =over 4
16758:
16759: =item *
16760:
16761: allowed($priv,$uri,$symb,$role,$clientip,$noblockcheck) : check for a user privilege;
16762: returns codes for allowed actions.
16763:
16764: The first argument is required, all others are optional.
16765:
16766: $priv is the privilege being checked.
16767: $uri contains additional information about what is being checked for access (e.g.,
16768: URL, course ID etc.).
16769: $symb is the unique resource instance identifier in a course; if needed,
16770: but not provided, it will be retrieved via a call to &symbread().
16771: $role is the role for which a priv is being checked (only used if priv is evb).
16772: $clientip is the user's IP address (only used when checking for access to portfolio
16773: files).
16774: $noblockcheck, if true, skips calls to &has_comm_blocking() for the bre priv. This
16775: prevents recursive calls to &allowed.
16776:
16777: F: full access
16778: U,I,K: authentication modes (cxx only)
16779: '': forbidden
16780: 1: user needs to choose course
16781: 2: browse allowed
16782: A: passphrase authentication needed
16783: B: access temporarily blocked because of a blocking event in a course.
16784: D: access blocked because access is required via session initiated via deep-link
16785:
16786: =item *
16787:
16788: constructaccess($url,$setpriv) : check for access to construction space URL
16789:
16790: See if the owner domain and name in the URL match those in the
16791: expected environment. If so, return three element list
16792: ($ownername,$ownerdomain,$ownerhome).
16793:
16794: Otherwise return the null string.
16795:
16796: If second argument 'setpriv' is true, it assigns the privileges,
16797: and returns the same three element list, unless the owner has
16798: blocked "ad hoc" Domain Coordinator access to the Author Space,
16799: in which case the null string is returned.
16800:
16801: =item *
16802:
16803: definerole($rolename,$sysrole,$domrole,$courole,$uname,$udom) : define role;
16804: define a custom role rolename set privileges in format of lonTabs/roles.tab
16805: for system, domain, and course level. $uname and $udom are optional (current
16806: user's username and domain will be used when either of $uname or $udom are absent.
16807:
16808: =item *
16809:
16810: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
16811: (rolesplain.tab); plain text explanation of a user role term.
16812: $type is Course (default) or Community.
16813: If $forcedefault evaluates to true, text returned will be default
16814: text for $type. Otherwise, if this is a course, the text returned
16815: will be a custom name for the role (if defined in the course's
16816: environment). If no custom name is defined the default is returned.
16817:
16818: =item *
16819:
16820: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
16821: All arguments are optional. Returns a hash of a roles, either for
16822: co-author/assistant author roles for a user's Construction Space
16823: (default), or if $context is 'userroles', roles for the user himself,
16824: In the hash, keys are set to colon-separated $uname,$udom,$role, and
16825: (optionally) if $withsec is true, a fourth colon-separated item - $section.
16826: For each key, value is set to colon-separated start and end times for
16827: the role. If no username and domain are specified, will default to
16828: current user/domain. Types, roles, and roledoms are references to arrays
16829: of role statuses (active, future or previous), roles
16830: (e.g., cc,in, st etc.) and domains of the roles which can be used
16831: to restrict the list of roles reported. If no array ref is
16832: provided for types, will default to return only active roles.
16833:
16834: =item *
16835:
16836: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
16837: user: $uname:$udom has a role in the course: $cdom_$cnum.
16838:
16839: Additional optional arguments are: $type (if role checking is to be restricted
16840: to certain user status types -- previous (expired roles), active (currently
16841: available roles) or future (roles available in the future), and
16842: $hideprivileged -- if true will not report course roles for users who
16843: have active Domain Coordinator role in course's domain or in additional
16844: domains (specified in 'Domains to check for privileged users' in course
16845: environment -- set via: Course Settings -> Classlists and staff listing).
16846:
16847: =item *
16848:
16849: privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
16850: $username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
16851: $possdomains and $possroles are optional array refs -- to domains to check and
16852: roles to check. If $possdomains is not specified, a dump will be done of the
16853: users' roles.db to check for a dc or su role in any domain. This can be
16854: time consuming if &privileged is called repeatedly (e.g., when displaying a
16855: classlist), so in such cases, supplying a $possdomains array is preferred, as
16856: this then allows &privileged_by_domain() to be used, which caches the identity
16857: of privileged users, eliminating the need for repeated calls to &dump().
16858:
16859: =item *
16860:
16861: privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
16862: where the outer hash keys are domains specified in the $possdomains array ref,
16863: next inner hash keys are privileged roles specified in the $roles array ref,
16864: and the innermost hash contains key = value pairs for username:domain = end:start
16865: for active or future "privileged" users with that role in that domain. To avoid
16866: repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
16867: innerhash are cached using priv_$role and $dom as the identifiers.
16868:
16869: =back
16870:
16871: =head2 User Modification
16872:
16873: =over 4
16874:
16875: =item *
16876:
16877: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
16878: user for the level given by URL. Optional start and end dates (leave empty
16879: string or zero for "no date")
16880:
16881: =item *
16882:
16883: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
16884: change a users, password, possible return values are: ok,
16885: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
16886: refused
16887:
16888: =item *
16889:
16890: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
16891:
16892: =item *
16893:
16894: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
16895: $forceid,$desiredhome,$email,$inststatus,$candelete) :
16896:
16897: will update user information (firstname,middlename,lastname,generation,
16898: permanentemail), and if forceid is true, student/employee ID also.
16899: A user's institutional affiliation(s) can also be updated.
16900: User information fields will not be overwritten with empty entries
16901: unless the field is included in the $candelete array reference.
16902: This array is included when a single user is modified via "Manage Users",
16903: or when Autoupdate.pl is run by cron in a domain.
16904:
16905: =item *
16906:
16907: modifystudent
16908:
16909: modify a student's enrollment and identification information.
16910: The course id is resolved based on the current user's environment.
16911: This means the invoking user must be a course coordinator or otherwise
16912: associated with a course.
16913:
16914: This call is essentially a wrapper for lonnet::modifyuser and
16915: lonnet::modify_student_enrollment
16916:
16917: Inputs:
16918:
16919: =over 4
16920:
16921: =item B<$udom> Student's loncapa domain
16922:
16923: =item B<$uname> Student's loncapa login name
16924:
16925: =item B<$uid> Student/Employee ID
16926:
16927: =item B<$umode> Student's authentication mode
16928:
16929: =item B<$upass> Student's password
16930:
16931: =item B<$first> Student's first name
16932:
16933: =item B<$middle> Student's middle name
16934:
16935: =item B<$last> Student's last name
16936:
16937: =item B<$gene> Student's generation
16938:
16939: =item B<$usec> Student's section in course
16940:
16941: =item B<$end> Unix time of the roles expiration
16942:
16943: =item B<$start> Unix time of the roles start date
16944:
16945: =item B<$forceid> If defined, allow $uid to be changed
16946:
16947: =item B<$desiredhome> server to use as home server for student
16948:
16949: =item B<$email> Student's permanent e-mail address
16950:
16951: =item B<$type> Type of enrollment (auto or manual)
16952:
16953: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
16954:
16955: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
16956:
16957: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
16958:
16959: =item B<$context> role change context (shown in User Management Logs display in a course)
16960:
16961: =item B<$inststatus> institutional status of user - : separated string of escaped status types
16962:
16963: =item B<$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.
16964:
16965: =back
16966:
16967: =item *
16968:
16969: modify_student_enrollment
16970:
16971: Change a student's enrollment status in a class. The environment variable
16972: 'role.request.course' must be defined for this function to proceed.
16973:
16974: Inputs:
16975:
16976: =over 4
16977:
16978: =item $udom, student's domain
16979:
16980: =item $uname, student's name
16981:
16982: =item $uid, student's user id
16983:
16984: =item $first, student's first name
16985:
16986: =item $middle
16987:
16988: =item $last
16989:
16990: =item $gene
16991:
16992: =item $usec
16993:
16994: =item $end
16995:
16996: =item $start
16997:
16998: =item $type
16999:
17000: =item $locktype
17001:
17002: =item $cid
17003:
17004: =item $selfenroll
17005:
17006: =item $context
17007:
17008: =item $credits, number of credits student will earn from this class
17009:
17010: =item $instsec, institutional course section code for student
17011:
17012: =back
17013:
17014:
17015: =item *
17016:
17017: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
17018: custom role; give a custom role to a user for the level given by URL. Specify
17019: name and domain of role author, and role name
17020:
17021: =item *
17022:
17023: revokerole($udom,$uname,$url,$role) : revoke a role for url
17024:
17025: =item *
17026:
17027: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
17028:
17029: =back
17030:
17031: =head2 Course Infomation
17032:
17033: =over 4
17034:
17035: =item *
17036:
17037: coursedescription($courseid,$options) : returns a hash of information about the
17038: specified course id, including all environment settings for the
17039: course, the description of the course will be in the hash under the
17040: key 'description'
17041:
17042: $options is an optional parameter that if supplied is a hash reference that controls
17043: what how this function works. It has the following key/values:
17044:
17045: =over 4
17046:
17047: =item freshen_cache
17048:
17049: If defined, and the environment cache for the course is valid, it is
17050: returned in the returned hash.
17051:
17052: =item one_time
17053:
17054: If defined, the last cache time is set to _now_
17055:
17056: =item user
17057:
17058: If defined, the supplied username is used instead of the current user.
17059:
17060:
17061: =back
17062:
17063: =item *
17064:
17065: resdata($name,$domain,$type,@which) : request for current parameter
17066: setting for a specific $type, where $type is either 'course' or 'user',
17067: @what should be a list of parameters to ask about. This routine caches
17068: answers for 10 minutes.
17069:
17070: =item *
17071:
17072: get_courseresdata($courseid, $domain) : dump the entire course resource
17073: data base, returning a hash that is keyed by the resource name and has
17074: values that are the resource value. I believe that the timestamps and
17075: versions are also returned.
17076:
17077: =back
17078:
17079: =head2 Course Modification
17080:
17081: =over 4
17082:
17083: =item *
17084:
17085: writecoursepref($courseid,%prefs) : write preferences (environment
17086: database) for a course
17087:
17088: =item *
17089:
17090: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
17091:
17092: =item *
17093:
17094: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
17095:
17096: =item *
17097:
17098: is_course($courseid), is_course($cdom, $cnum)
17099:
17100: Accepts either a combined $courseid (in the form of domain_courseid) or the
17101: two component version $cdom, $cnum. It checks if the specified course exists.
17102:
17103: Returns:
17104: undef if the course doesn't exist, otherwise
17105: in scalar context the combined courseid.
17106: in list context the two components of the course identifier, domain and
17107: courseid.
17108:
17109: =back
17110:
17111: =head2 Bubblesheet Configuration
17112:
17113: =over 4
17114:
17115: =item *
17116:
17117: get_scantron_config($which)
17118:
17119: $which - the name of the configuration to parse from the file.
17120:
17121: Parses and returns the bubblesheet configuration line selected as a
17122: hash of configuration file fields.
17123:
17124:
17125: Returns:
17126: If the named configuration is not in the file, an empty
17127: hash is returned.
17128:
17129: a hash with the fields
17130: name - internal name for the this configuration setup
17131: description - text to display to operator that describes this config
17132: CODElocation - if 0 or the string 'none'
17133: - no CODE exists for this config
17134: if -1 || the string 'letter'
17135: - a CODE exists for this config and is
17136: a string of letters
17137: Unsupported value (but planned for future support)
17138: if a positive integer
17139: - The CODE exists as the first n items from
17140: the question section of the form
17141: if the string 'number'
17142: - The CODE exists for this config and is
17143: a string of numbers
17144: CODEstart - (only matter if a CODE exists) column in the line where
17145: the CODE starts
17146: CODElength - length of the CODE
17147: IDstart - column where the student/employee ID starts
17148: IDlength - length of the student/employee ID info
17149: Qstart - column where the information from the bubbled
17150: 'questions' start
17151: Qlength - number of columns comprising a single bubble line from
17152: the sheet. (usually either 1 or 10)
17153: Qon - either a single character representing the character used
17154: to signal a bubble was chosen in the positional setup, or
17155: the string 'letter' if the letter of the chosen bubble is
17156: in the final, or 'number' if a number representing the
17157: chosen bubble is in the file (1->A 0->J)
17158: Qoff - the character used to represent that a bubble was
17159: left blank
17160: PaperID - if the scanning process generates a unique number for each
17161: sheet scanned the column that this ID number starts in
17162: PaperIDlength - number of columns that comprise the unique ID number
17163: for the sheet of paper
17164: FirstName - column that the first name starts in
17165: FirstNameLength - number of columns that the first name spans
17166: LastName - column that the last name starts in
17167: LastNameLength - number of columns that the last name spans
17168: BubblesPerRow - number of bubbles available in each row used to
17169: bubble an answer. (If not specified, 10 assumed).
17170:
17171:
17172: =item *
17173:
17174: get_scantronformat_file($cdom)
17175:
17176: $cdom - the course's domain (optional); if not supplied, uses
17177: domain for current $env{'request.course.id'}.
17178:
17179: Returns an array containing lines from the scantron format file for
17180: the domain of the course.
17181:
17182: If a url for a custom.tab file is listed in domain's configuration.db,
17183: lines are from this file.
17184:
17185: Otherwise, if a default.tab has been published in RES space by the
17186: domainconfig user, lines are from this file.
17187:
17188: Otherwise, fall back to getting lines from the legacy file on the
17189: local server: /home/httpd/lonTabs/default_scantronformat.tab
17190:
17191: =back
17192:
17193: =head2 Resource Subroutines
17194:
17195: =over 4
17196:
17197: =item *
17198:
17199: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
17200:
17201: =item *
17202:
17203: repcopy($filename) : subscribes to the requested file, and attempts to
17204: replicate from the owning library server, Might return
17205: 'unavailable', 'not_found', 'forbidden', 'ok', or
17206: 'bad_request', also attempts to grab the metadata for the
17207: resource. Expects the local filesystem pathname
17208: (/home/httpd/html/res/....)
17209:
17210: =back
17211:
17212: =head2 Resource Information
17213:
17214: =over 4
17215:
17216: =item *
17217:
17218: EXT($varname,$symb,$udom,$uname,$usection,$recurse,$cid) : evaluates
17219: and returns the value of a variety of different possible values,
17220: $varname should be a request string, and the other parameters can be
17221: used to specify who and what one is asking about. Ordinarily, $cid
17222: does not need to be specified, as it is retrived from
17223: $env{'request.course.id'}, but &Apache::lonnet::EXT() is called
17224: within lonuserstate::loadmap() when initializing a course, before
17225: $env{'request.course.id'} has been set, so it needs to be provided
17226: in that one case.
17227:
17228: Possible values for $varname are environment.lastname (or other item
17229: from the envirnment hash), user.name (or someother aspect about the
17230: user), resource.0.maxtries (or some other part and parameter of a
17231: resource)
17232:
17233: =item *
17234:
17235: directcondval($number) : get current value of a condition; reads from a state
17236: string
17237:
17238: =item *
17239:
17240: condval($condidx) : value of condition index based on state
17241:
17242: =item *
17243:
17244: metadata($uri,$what,$toolsymb,$liburi,$prefix,$depthcount) : request a
17245: resource's metadata, $what should be either a specific key, or either
17246: 'keys' (to get a list of possible keys) or 'packages' to get a list of
17247: packages that this resource currently uses, the last 3 arguments are
17248: only used internally for recursive metadata.
17249:
17250: the toolsymb is only used where the uri is for an external tool (for which
17251: the uri as well as the symb are guaranteed to be unique).
17252:
17253: this function automatically caches all requests except any made recursively
17254: to retrieve a list of metadata keys for an imported library file ($liburi is
17255: defined).
17256:
17257: =item *
17258:
17259: metadata_query($query,$custom,$customshow) : make a metadata query against the
17260: network of library servers; returns file handle of where SQL and regex results
17261: will be stored for query
17262:
17263: =item *
17264:
17265: symbread($filename,$donotrecurse,$ignorecachednull,$checkforblock,$possibles) :
17266: return symbolic list entry (all arguments optional).
17267:
17268: Args: filename is the filename (including path) for the file for which a symb
17269: is required; donotrecurse, if true will prevent calls to allowed() being made
17270: to check access status if more than one resource was found in the bighash
17271: (see rev. 1.249) to avoid an infinite loop if an ambiguous resource is part of
17272: a randompick); ignorecachednull, if true will prevent a symb of '' being
17273: returned if $env{$cache_str} is defined as ''; checkforblock if true will
17274: cause possible symbs to be checked to determine if they are subject to content
17275: blocking, if so they will not be included as possible symbs; possibles is a
17276: ref to a hash, which, as a side effect, will be populated with all possible
17277: symbs (content blocking not tested).
17278:
17279: returns the data handle
17280:
17281: =item *
17282:
17283: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
17284: and is a possible symb for the URL in $thisfn, and if is an encrypted
17285: resource that the user accessed using /enc/ returns a 1 on success, 0
17286: on failure, user must be in a course, as it assumes the existence of
17287: the course initial hash, and uses $env('request.course.id'}. The third
17288: arg is an optional reference to a scalar. If this arg is passed in the
17289: call to symbverify, it will be set to 1 if the symb has been set to be
17290: encrypted; otherwise it will be null.
17291:
17292: =item *
17293:
17294: symbclean($symb) : removes versions numbers from a symb, returns the
17295: cleaned symb
17296:
17297: =item *
17298:
17299: is_on_map($uri) : checks if the $uri is somewhere on the current
17300: course map, user must be in a course for it to work.
17301:
17302: =item *
17303:
17304: numval($salt) : return random seed value (addend for rndseed)
17305:
17306: =item *
17307:
17308: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
17309: a random seed, all arguments are optional, if they aren't sent it uses the
17310: environment to derive them. Note: if symb isn't sent and it can't get one
17311: from &symbread it will use the current time as its return value
17312:
17313: =item *
17314:
17315: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
17316: unfakeable, receipt
17317:
17318: =item *
17319:
17320: receipt() : API to ireceipt working off of env values; given out to users
17321:
17322: =item *
17323:
17324: countacc($url) : count the number of accesses to a given URL
17325:
17326: =item *
17327:
17328: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
17329:
17330: =item *
17331:
17332: checkin($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 $tcrsid)
17333:
17334: =item *
17335:
17336: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
17337:
17338: =item *
17339:
17340: devalidate($symb) : devalidate temporary spreadsheet calculations,
17341: forcing spreadsheet to reevaluate the resource scores next time.
17342:
17343: =item *
17344:
17345: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
17346: when viewing in course context.
17347:
17348: input: six args -- filename (decluttered), course number, course domain,
17349: url, symb (if registered) and group (if this is a
17350: group item -- e.g., bulletin board, group page etc.).
17351:
17352: output: array of five scalars --
17353: $cfile -- url for file editing if editable on current server
17354: $home -- homeserver of resource (i.e., for author if published,
17355: or course if uploaded.).
17356: $switchserver -- 1 if server switch will be needed.
17357: $forceedit -- 1 if icon/link should be to go to edit mode
17358: $forceview -- 1 if icon/link should be to go to view mode
17359:
17360: =item *
17361:
17362: is_course_upload($file,$cnum,$cdom)
17363:
17364: Used in course context to determine if current file was uploaded to
17365: the course (i.e., would be found in /userfiles/docs on the course's
17366: homeserver.
17367:
17368: input: 3 args -- filename (decluttered), course number and course domain.
17369: output: boolean -- 1 if file was uploaded.
17370:
17371: =back
17372:
17373: =head2 Storing/Retreiving Data
17374:
17375: =over 4
17376:
17377: =item *
17378:
17379: store($storehash,$symb,$namespace,$udom,$uname,$laststore) : stores hash
17380: permanently for this url; hashref needs to be given and should be a \%hashname;
17381: the remaining args aren't required and if they aren't passed or are '' they will
17382: be derived from the env (with the exception of $laststore, which is an
17383: optional arg used when a user's submission is stored in grading).
17384: $laststore is $version=$timestamp, where $version is the most recent version
17385: number retrieved for the corresponding $symb in the $namespace db file, and
17386: $timestamp is the timestamp for that transaction (UNIX time).
17387: $laststore is currently only passed when cstore() is called by
17388: structuretags::finalize_storage().
17389:
17390: =item *
17391:
17392: cstore($storehash,$symb,$namespace,$udom,$uname,$laststore) : same as store
17393: but uses critical subroutine
17394:
17395: =item *
17396:
17397: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
17398: all args are optional
17399:
17400: =item *
17401:
17402: dumpstore($namespace,$udom,$uname,$regexp,$range) :
17403: dumps the complete (or key matching regexp) namespace into a hash
17404: ($udom, $uname, $regexp, $range are optional) for a namespace that is
17405: normally &store()ed into
17406:
17407: $range should be either an integer '100' (give me the first 100
17408: matching records)
17409: or be two integers sperated by a - with no spaces
17410: '30-50' (give me the 30th through the 50th matching
17411: records)
17412:
17413:
17414: =item *
17415:
17416: putstore($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog) :
17417: replaces a &store() version of data with a replacement set of data
17418: for a particular resource in a namespace passed in the $storehash hash
17419: reference. If $tolog is true, the transaction is logged in the courselog
17420: with an action=PUTSTORE.
17421:
17422: =item *
17423:
17424: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
17425: works very similar to store/cstore, but all data is stored in a
17426: temporary location and can be reset using tmpreset, $storehash should
17427: be a hash reference, returns nothing on success
17428:
17429: =item *
17430:
17431: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
17432: similar to restore, but all data is stored in a temporary location and
17433: can be reset using tmpreset. Returns a hash of values on success,
17434: error string otherwise.
17435:
17436: =item *
17437:
17438: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
17439: deltes all keys for $symb form the temporary storage hash.
17440:
17441: =item *
17442:
17443: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
17444: reference filled in from namesp ($udom and $uname are optional)
17445:
17446: =item *
17447:
17448: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
17449: namesp ($udom and $uname are optional)
17450:
17451: =item *
17452:
17453: dump($namespace,$udom,$uname,$regexp,$range) :
17454: dumps the complete (or key matching regexp) namespace into a hash
17455: ($udom, $uname, $regexp, $range are optional)
17456:
17457: $range should be either an integer '100' (give me the first 100
17458: matching records)
17459: or be two integers sperated by a - with no spaces
17460: '30-50' (give me the 30th through the 50th matching
17461: records)
17462: =item *
17463:
17464: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
17465: $store can be a scalar, an array reference, or if the amount to be
17466: incremented is > 1, a hash reference.
17467:
17468: ($udom and $uname are optional)
17469:
17470: =item *
17471:
17472: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
17473: ($udom and $uname are optional)
17474:
17475: =item *
17476:
17477: cput($namespace,$storehash,$udom,$uname) : critical put
17478: ($udom and $uname are optional)
17479:
17480: =item *
17481:
17482: newput($namespace,$storehash,$udom,$uname) :
17483:
17484: Attempts to store the items in the $storehash, but only if they don't
17485: currently exist, if this succeeds you can be certain that you have
17486: successfully created a new key value pair in the $namespace db.
17487:
17488:
17489: Args:
17490: $namespace: name of database to store values to
17491: $storehash: hashref to store to the db
17492: $udom: (optional) domain of user containing the db
17493: $uname: (optional) name of user caontaining the db
17494:
17495: Returns:
17496: 'ok' -> succeeded in storing all keys of $storehash
17497: 'key_exists: <key>' -> failed to anything out of $storehash, as at
17498: least <key> already existed in the db (other
17499: requested keys may also already exist)
17500: 'error: <msg>' -> unable to tie the DB or other error occurred
17501: 'con_lost' -> unable to contact request server
17502: 'refused' -> action was not allowed by remote machine
17503:
17504:
17505: =item *
17506:
17507: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
17508: reference filled in from namesp (encrypts the return communication)
17509: ($udom and $uname are optional)
17510:
17511: =item *
17512:
17513: log($udom,$name,$home,$message) : write to permanent log for user; use
17514: critical subroutine
17515:
17516: =item *
17517:
17518: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
17519: array reference filled in from namespace found in domain level on either
17520: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
17521:
17522: =item *
17523:
17524: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
17525: domain level either on specified domain server ($uhome) or primary domain
17526: server ($udom and $uhome are optional)
17527:
17528: =item *
17529:
17530: get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults
17531: for: authentication, language, quotas, timezone, date locale, and portal URL in
17532: the target domain.
17533:
17534: May also include additional key => value pairs for the following groups:
17535:
17536: =over
17537:
17538: =item
17539: disk quotas (MB allocated by default to portfolios and authoring spaces).
17540:
17541: =over
17542:
17543: =item defaultquota, authorquota
17544:
17545: =back
17546:
17547: =item
17548: tools (availability of aboutme page, blog, webDAV access for authoring spaces,
17549: portfolio for users).
17550:
17551: =over
17552:
17553: =item
17554: aboutme, blog, webdav, portfolio
17555:
17556: =back
17557:
17558: =item
17559: requestcourses: ability to request courses, and how requests are processed.
17560:
17561: =over
17562:
17563: =item
17564: official, unofficial, community, textbook, placement
17565:
17566: =back
17567:
17568: =item
17569: inststatus: types of institutional affiliation, and order in which they are displayed.
17570:
17571: =over
17572:
17573: =item
17574: inststatustypes, inststatusorder, inststatusguest
17575:
17576: =back
17577:
17578: =item
17579: coursedefaults: can PDF forms can be created, default credits for courses, default quotas (MB)
17580: for course's uploaded content.
17581:
17582: =over
17583:
17584: =item
17585: canuse_pdfforms, officialcredits, unofficialcredits, textbookcredits, officialquota, unofficialquota,
17586: communityquota, textbookquota, placementquota
17587:
17588: =back
17589:
17590: =item
17591: usersessions: set options for hosting of your users in other domains, and hosting of users from other domains
17592: on your servers.
17593:
17594: =over
17595:
17596: =item
17597: remotesessions, hostedsessions
17598:
17599: =back
17600:
17601: =back
17602:
17603: In cases where a domain coordinator has never used the "Set Domain Configuration"
17604: utility to create a configuration.db file on a domain's primary library server
17605: only the following domain defaults: auth_def, auth_arg_def, lang_def
17606: -- corresponding values are authentication type (internal, krb4, krb5,
17607: or localauth), initial password or a kerberos realm, language (e.g., en-us) --
17608: will be available. Values are retrieved from cache (if current), unless the
17609: optional $ignore_cache arg is true, or from domain's configuration.db (if available),
17610: or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab.
17611:
17612: Typical usage:
17613:
17614: %domdefaults = &get_domain_defaults($target_domain);
17615:
17616: =back
17617:
17618: =head2 Network Status Functions
17619:
17620: =over 4
17621:
17622: =item *
17623:
17624: dirlist() : return directory list based on URI (first arg).
17625:
17626: Inputs: 1 required, 5 optional.
17627:
17628: =over
17629:
17630: =item
17631: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
17632:
17633: =item
17634: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
17635:
17636: =item
17637: $username - username of user/course to be listed. Extracted from $uri if absent.
17638:
17639: =item
17640: $getpropath - boolean: 1 if prepend path using &propath().
17641:
17642: =item
17643: $getuserdir - boolean: 1 if prepend path for "userfiles".
17644:
17645: =item
17646: $alternateRoot - path to prepend in place of path from $uri.
17647:
17648: =back
17649:
17650: Returns: Array of up to two items.
17651:
17652: =over
17653:
17654: a reference to an array of files/subdirectories
17655:
17656: =over
17657:
17658: Each element in the array of files/subdirectories is a & separated list of
17659: item name and the result of running stat on the item. If dirlist was requested
17660: for a file instead of a directory, the item name will be ''. For a directory
17661: listing, if the item is a metadata file, the element will end &N&M
17662: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
17663: default copyright set (1).
17664:
17665: =back
17666:
17667: a scalar containing error condition (if encountered).
17668:
17669: =over
17670:
17671: =item
17672: no_host (no homeserver identified for $username:$domain).
17673:
17674: =item
17675: no_such_host (server contacted for listing not identified as valid host).
17676:
17677: =item
17678: con_lost (connection to remote server failed).
17679:
17680: =item
17681: refused (invalid $username:$domain received on lond side).
17682:
17683: =item
17684: no_such_dir (directory at specified path on lond side does not exist).
17685:
17686: =item
17687: empty (directory at specified path on lond side is empty).
17688:
17689: =over
17690:
17691: This is currently not encountered because the &ls3, &ls2,
17692: &ls (_handler) routines on the lond side do not filter out
17693: . and .. from a directory listing.
17694:
17695: =back
17696:
17697: =back
17698:
17699: =back
17700:
17701: =item *
17702:
17703: spareserver() : find server with least workload from spare.tab
17704:
17705:
17706: =item *
17707:
17708: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
17709: if there is no corresponding loncapa host.
17710:
17711: =back
17712:
17713:
17714: =head2 Apache Request
17715:
17716: =over 4
17717:
17718: =item *
17719:
17720: ssi($url,%hash) : server side include, does a complete request cycle on url to
17721: localhost, posts hash
17722:
17723: =back
17724:
17725: =head2 Data to String to Data
17726:
17727: =over 4
17728:
17729: =item *
17730:
17731: hash2str(%hash) : convert a hash into a string complete with escaping and '='
17732: and '&' separators, supports elements that are arrayrefs and hashrefs
17733:
17734: =item *
17735:
17736: hashref2str($hashref) : convert a hashref into a string complete with
17737: escaping and '=' and '&' separators, supports elements that are
17738: arrayrefs and hashrefs
17739:
17740: =item *
17741:
17742: arrayref2str($arrayref) : convert an arrayref into a string complete
17743: with escaping and '&' separators, supports elements that are arrayrefs
17744: and hashrefs
17745:
17746: =item *
17747:
17748: str2hash($string) : convert string to hash using unescaping and
17749: splitting on '=' and '&', supports elements that are arrayrefs and
17750: hashrefs
17751:
17752: =item *
17753:
17754: str2array($string) : convert string to hash using unescaping and
17755: splitting on '&', supports elements that are arrayrefs and hashrefs
17756:
17757: =back
17758:
17759: =head2 Logging Routines
17760:
17761:
17762: These routines allow one to make log messages in the lonnet.log and
17763: lonnet.perm logfiles.
17764:
17765: =over 4
17766:
17767: =item *
17768:
17769: logtouch() : make sure the logfile, lonnet.log, exists
17770:
17771: =item *
17772:
17773: logthis() : append message to the normal lonnet.log file, it gets
17774: preiodically rolled over and deleted.
17775:
17776: =item *
17777:
17778: logperm() : append a permanent message to lonnet.perm.log, this log
17779: file never gets deleted by any automated portion of the system, only
17780: messages of critical importance should go in here.
17781:
17782:
17783: =back
17784:
17785: =head2 General File Helper Routines
17786:
17787: =over 4
17788:
17789: =item *
17790:
17791: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
17792: (a) files in /uploaded
17793: (i) If a local copy of the file exists -
17794: compares modification date of local copy with last-modified date for
17795: definitive version stored on home server for course. If local copy is
17796: stale, requests a new version from the home server and stores it.
17797: If the original has been removed from the home server, then local copy
17798: is unlinked.
17799: (ii) If local copy does not exist -
17800: requests the file from the home server and stores it.
17801:
17802: If $caller is 'uploadrep':
17803: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
17804: for request for files originally uploaded via DOCS.
17805: - returns 'ok' if fresh local copy now available, -1 otherwise.
17806:
17807: Otherwise:
17808: This indicates a call from the content generation phase of the request.
17809: - returns the entire contents of the file or -1.
17810:
17811: (b) files in /res
17812: - returns the entire contents of a file or -1;
17813: it properly subscribes to and replicates the file if neccessary.
17814:
17815:
17816: =item *
17817:
17818: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
17819: reference
17820:
17821: returns either a stat() list of data about the file or an empty list
17822: if the file doesn't exist or couldn't find out about it (connection
17823: problems or user unknown)
17824:
17825: =item *
17826:
17827: filelocation($dir,$file) : returns file system location of a file
17828: based on URI; meant to be "fairly clean" absolute reference, $dir is a
17829: directory that relative $file lookups are to looked in ($dir of /a/dir
17830: and a file of ../bob will become /a/bob)
17831:
17832: =item *
17833:
17834: hreflocation($dir,$file) : returns file system location or a URL; same as
17835: filelocation except for hrefs
17836:
17837: =item *
17838:
17839: declutter() : declutters URLs -- remove beginning slashes, 'res' etc.
17840: also removes beginning /home/httpd/html unless /priv/ follows it.
17841:
17842: =back
17843:
17844: =head2 Usererfile file routines (/uploaded*)
17845:
17846: =over 4
17847:
17848: =item *
17849:
17850: userfileupload(): main rotine for putting a file in a user or course's
17851: filespace, arguments are,
17852:
17853: formname - required - this is the name of the element in $env where the
17854: filename, and the contents of the file to create/modifed exist
17855: the filename is in $env{'form.'.$formname.'.filename'} and the
17856: contents of the file is located in $env{'form.'.$formname}
17857: context - if coursedoc, store the file in the course of the active role
17858: of the current user;
17859: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
17860: if 'canceloverwrite': delete file in tmp/overwrites directory
17861: subdir - required - subdirectory to put the file in under ../userfiles/
17862: if undefined, it will be placed in "unknown"
17863:
17864: (This routine calls clean_filename() to remove any dangerous
17865: characters from the filename, and then calls finuserfileupload() to
17866: complete the transaction)
17867:
17868: returns either the url of the uploaded file (/uploaded/....) if successful
17869: and /adm/notfound.html if unsuccessful
17870:
17871: =item *
17872:
17873: clean_filename(): routine for cleaing a filename up for storage in
17874: userfile space, argument is:
17875:
17876: filename - proposed filename
17877:
17878: returns: the new clean filename
17879:
17880: =item *
17881:
17882: finishuserfileupload(): routine that creates and sends the file to
17883: userspace, probably shouldn't be called directly
17884:
17885: docuname: username or courseid of destination for the file
17886: docudom: domain of user/course of destination for the file
17887: formname: same as for userfileupload()
17888: fname: filename (including subdirectories) for the file
17889: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
17890: if hashref, and context is scantron, will convert csv format to standard format
17891: allfiles: reference to hash used to store objects found by parser
17892: codebase: reference to hash used for codebases of java objects found by parser
17893: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
17894: thumbheight: height (pixels) of thumbnail to be created for uploaded image
17895: resizewidth: width to be used to resize image using resizeImage from ImageMagick
17896: resizeheight: height to be used to resize image using resizeImage from ImageMagick
17897: context: if 'overwrite', will move the uploaded file from its temporary location to
17898: userfiles to facilitate overwriting a previously uploaded file with same name.
17899: mimetype: reference to scalar to accommodate mime type determined
17900: from File::MMagic if $parser = parse.
17901:
17902: returns either the url of the uploaded file (/uploaded/....) if successful
17903: and /adm/notfound.html if unsuccessful (or an error message if context
17904: was 'overwrite').
17905:
17906:
17907: =item *
17908:
17909: renameuserfile(): renames an existing userfile to a new name
17910:
17911: Args:
17912: docuname: username or courseid of destination for the file
17913: docudom: domain of user/course of destination for the file
17914: old: current file name (including any subdirs under userfiles)
17915: new: desired file name (including any subdirs under userfiles)
17916:
17917: =item *
17918:
17919: mkdiruserfile(): creates a directory is a userfiles dir
17920:
17921: Args:
17922: docuname: username or courseid of destination for the file
17923: docudom: domain of user/course of destination for the file
17924: dir: dir to create (including any subdirs under userfiles)
17925:
17926: =item *
17927:
17928: removeuserfile(): removes a file that exists in userfiles
17929:
17930: Args:
17931: docuname: username or courseid of destination for the file
17932: docudom: domain of user/course of destination for the file
17933: fname: filname to delete (including any subdirs under userfiles)
17934:
17935: =item *
17936:
17937: removeuploadedurl(): convience function for removeuserfile()
17938:
17939: Args:
17940: url: a full /uploaded/... url to delete
17941:
17942: =item *
17943:
17944: get_portfile_permissions():
17945: Args:
17946: domain: domain of user or course contain the portfolio files
17947: user: name of user or num of course contain the portfolio files
17948: Returns:
17949: hashref of a dump of the proper file_permissions.db
17950:
17951:
17952: =item *
17953:
17954: get_access_controls():
17955:
17956: Args:
17957: current_permissions: the hash ref returned from get_portfile_permissions()
17958: group: (optional) the group you want the files associated with
17959: file: (optional) the file you want access info on
17960:
17961: Returns:
17962: a hash (keys are file names) of hashes containing
17963: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
17964: values are XML containing access control settings (see below)
17965:
17966: Internal notes:
17967:
17968: access controls are stored in file_permissions.db as key=value pairs.
17969: key -> path to file/file_name\0uniqueID:scope_end_start
17970: where scope -> public,guest,course,group,domains or users.
17971: end -> UNIX time for end of access (0 -> no end date)
17972: start -> UNIX time for start of access
17973:
17974: value -> XML description of access control
17975: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
17976: <start></start>
17977: <end></end>
17978:
17979: <password></password> for scope type = guest
17980:
17981: <domain></domain> for scope type = course or group
17982: <number></number>
17983: <roles id="">
17984: <role></role>
17985: <access></access>
17986: <section></section>
17987: <group></group>
17988: </roles>
17989:
17990: <dom></dom> for scope type = domains
17991:
17992: <users> for scope type = users
17993: <user>
17994: <uname></uname>
17995: <udom></udom>
17996: </user>
17997: </users>
17998: </scope>
17999:
18000: Access data is also aggregated for each file in an additional key=value pair:
18001: key -> path to file/file_name\0accesscontrol
18002: value -> reference to hash
18003: hash contains key = value pairs
18004: where key = uniqueID:scope_end_start
18005: value = UNIX time record was last updated
18006:
18007: Used to improve speed of look-ups of access controls for each file.
18008:
18009: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
18010:
18011: =item *
18012:
18013: modify_access_controls():
18014:
18015: Modifies access controls for a portfolio file
18016: Args
18017: 1. file name
18018: 2. reference to hash of required changes,
18019: 3. domain
18020: 4. username
18021: where domain,username are the domain of the portfolio owner
18022: (either a user or a course)
18023:
18024: Returns:
18025: 1. result of additions or updates ('ok' or 'error', with error message).
18026: 2. result of deletions ('ok' or 'error', with error message).
18027: 3. reference to hash of any new or updated access controls.
18028: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
18029: key = integer (inbound ID)
18030: value = uniqueID
18031:
18032: =item *
18033:
18034: get_timebased_id():
18035:
18036: Attempts to get a unique timestamp-based suffix for use with items added to a
18037: course via the Course Editor (e.g., folders, composite pages,
18038: group bulletin boards).
18039:
18040: Args: (first three required; six others optional)
18041:
18042: 1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
18043: docssequence, or name of group
18044:
18045: 2. keyid (alphanumeric): name of temporary locking key in hash,
18046: e.g., num, boardids
18047:
18048: 3. namespace: name of gdbm file used to store suffixes already assigned;
18049: file will be named nohist_namespace.db
18050:
18051: 4. cdom: domain of course; default is current course domain from %env
18052:
18053: 5. cnum: course number; default is current course number from %env
18054:
18055: 6. idtype: set to concat if an additional digit is to be appended to the
18056: unix timestamp to form the suffix, if the plain timestamp is already
18057: in use. Default is to not do this, but simply increment the unix
18058: timestamp by 1 until a unique key is obtained.
18059:
18060: 7. who: holder of locking key; defaults to user:domain for user.
18061:
18062: 8. locktries: number of attempts to obtain a lock (sleep of 1s before
18063: retrying); default is 3.
18064:
18065: 9. maxtries: number of attempts to obtain a unique suffix; default is 20.
18066:
18067: Returns:
18068:
18069: 1. suffix obtained (numeric)
18070:
18071: 2. result of deleting locking key (ok if deleted, or lock never obtained)
18072:
18073: 3. error: contains (localized) error message if an error occurred.
18074:
18075:
18076: =back
18077:
18078: =head2 HTTP Helper Routines
18079:
18080: =over 4
18081:
18082: =item *
18083:
18084: escape() : unpack non-word characters into CGI-compatible hex codes
18085:
18086: =item *
18087:
18088: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
18089:
18090: =back
18091:
18092: =head1 PRIVATE SUBROUTINES
18093:
18094: =head2 Underlying communication routines (Shouldn't call)
18095:
18096: =over 4
18097:
18098: =item *
18099:
18100: subreply() : tries to pass a message to lonc, returns con_lost if incapable
18101:
18102: =item *
18103:
18104: reply() : uses subreply to send a message to remote machine, logs all failures
18105:
18106: =item *
18107:
18108: critical() : passes a critical message to another server; if cannot
18109: get through then place message in connection buffer directory and
18110: returns con_delayed, if incapable of saving message, returns
18111: con_failed
18112:
18113: =item *
18114:
18115: reconlonc() : tries to reconnect lonc client processes.
18116:
18117: =back
18118:
18119: =head2 Resource Access Logging
18120:
18121: =over 4
18122:
18123: =item *
18124:
18125: flushcourselogs() : flush (save) buffer logs and access logs
18126:
18127: =item *
18128:
18129: courselog($what) : save message for course in hash
18130:
18131: =item *
18132:
18133: courseacclog($what) : save message for course using &courselog(). Perform
18134: special processing for specific resource types (problems, exams, quizzes, etc).
18135:
18136: =item *
18137:
18138: goodbye() : flush course logs and log shutting down; it is called in srm.conf
18139: as a PerlChildExitHandler
18140:
18141: =back
18142:
18143: =head2 Other
18144:
18145: =over 4
18146:
18147: =item *
18148:
18149: symblist($mapname,%newhash) : update symbolic storage links
18150:
18151: =back
18152:
18153: =cut
18154:
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