File:
[LON-CAPA] /
loncom /
lonnet /
perl /
lonnet.pm
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1.1508:
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Tue Apr 11 20:35:19 2023 UTC (14 months, 3 weeks ago) by
raeburn
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MAIN
CVS tags:
HEAD
- Bug 6754
- Domain configuration to set defaults for which course types can use:
(a) External Tools defined/configured in domain, and (b) External Tools
defined/configured in course.
- Domain defaults can be overridden by DC for specific course(s) via:
Main Menu > "View or modify a course or community".
1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1508 2023/04/11 20:35:19 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 $response;
416: }
417:
418: # -------------------------------------------------- Non-critical communication
419: sub subreply {
420: my ($cmd,$server)=@_;
421: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
422: #
423: # With loncnew process trimming, there's a timing hole between lonc server
424: # process exit and the master server picking up the listen on the AF_UNIX
425: # socket. In that time interval, a lock file will exist:
426:
427: my $lockfile=$peerfile.".lock";
428: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
429: sleep(0.1);
430: }
431: # At this point, either a loncnew parent is listening or an old lonc
432: # or loncnew child is listening so we can connect or everything's dead.
433: #
434: # We'll give the connection a few tries before abandoning it. If
435: # connection is not possible, we'll con_lost back to the client.
436: #
437: my $client;
438: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
439: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
440: Type => SOCK_STREAM,
441: Timeout => 10);
442: if ($client) {
443: last; # Connected!
444: } else {
445: &create_connection(&hostname($server),$server);
446: }
447: sleep(0.1); # Try again later if failed connection.
448: }
449: my $answer;
450: if ($client) {
451: print $client "sethost:$server:$cmd\n";
452: $answer=<$client>;
453: if (!$answer) { $answer="con_lost"; }
454: chomp($answer);
455: } else {
456: $answer = 'con_lost'; # Failed connection.
457: }
458: return $answer;
459: }
460:
461: sub reply {
462: my ($cmd,$server)=@_;
463: unless (defined(&hostname($server))) { return 'no_such_host'; }
464: my $answer=subreply($cmd,$server);
465: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
466: my $logged = $cmd;
467: if ($cmd =~ /^encrypt:([^:]+):/) {
468: my $subcmd = $1;
469: if (($subcmd eq 'auth') || ($subcmd eq 'passwd') ||
470: ($subcmd eq 'changeuserauth') || ($subcmd eq 'makeuser') ||
471: ($subcmd eq 'putdom') || ($subcmd eq 'autoexportgrades') ||
472: ($subcmd eq 'put')) {
473: (undef,undef,my @rest) = split(/:/,$cmd);
474: if (($subcmd eq 'auth') || ($subcmd eq 'putdom')) {
475: splice(@rest,2,1,'Hidden');
476: } elsif ($subcmd eq 'passwd') {
477: splice(@rest,2,2,('Hidden','Hidden'));
478: } elsif (($subcmd eq 'changeuserauth') || ($subcmd eq 'makeuser') ||
479: ($subcmd eq 'autoexportgrades') || ($subcmd eq 'put')) {
480: splice(@rest,3,1,'Hidden');
481: }
482: $logged = join(':',('encrypt:'.$subcmd,@rest));
483: }
484: }
485: &logthis("<font color=\"blue\">WARNING:".
486: " $logged to $server returned $answer</font>");
487: }
488: return $answer;
489: }
490:
491: # ----------------------------------------------------------- Send USR1 to lonc
492:
493: sub reconlonc {
494: my ($lonid) = @_;
495: if ($lonid) {
496: my $hostname = &hostname($lonid);
497: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
498: if ($hostname && -e $peerfile) {
499: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
500: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
501: Type => SOCK_STREAM,
502: Timeout => 10);
503: if ($client) {
504: print $client ("reset_retries\n");
505: my $answer=<$client>;
506: #reset just this one.
507: }
508: }
509: return;
510: }
511:
512: &logthis("Trying to reconnect lonc");
513: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
514: if (open(my $fh,"<",$loncfile)) {
515: my $loncpid=<$fh>;
516: chomp($loncpid);
517: if (kill 0 => $loncpid) {
518: &logthis("lonc at pid $loncpid responding, sending USR1");
519: kill USR1 => $loncpid;
520: sleep 1;
521: } else {
522: &logthis(
523: "<font color=\"blue\">WARNING:".
524: " lonc at pid $loncpid not responding, giving up</font>");
525: }
526: } else {
527: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
528: }
529: }
530:
531: # ------------------------------------------------------ Critical communication
532:
533: sub critical {
534: my ($cmd,$server)=@_;
535: unless (&hostname($server)) {
536: &logthis("<font color=\"blue\">WARNING:".
537: " Critical message to unknown server ($server)</font>");
538: return 'no_such_host';
539: }
540: my $answer=reply($cmd,$server);
541: if ($answer eq 'con_lost') {
542: &reconlonc($server);
543: my $answer=reply($cmd,$server);
544: if ($answer eq 'con_lost') {
545: my $now=time;
546: my $middlename=$cmd;
547: $middlename=substr($middlename,0,16);
548: $middlename=~s/\W//g;
549: my $dfilename=
550: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
551: $dumpcount++;
552: {
553: my $dfh;
554: if (open($dfh,">",$dfilename)) {
555: print $dfh "$cmd\n";
556: close($dfh);
557: }
558: }
559: sleep 1;
560: my $wcmd='';
561: {
562: my $dfh;
563: if (open($dfh,"<",$dfilename)) {
564: $wcmd=<$dfh>;
565: close($dfh);
566: }
567: }
568: chomp($wcmd);
569: if ($wcmd eq $cmd) {
570: &logthis("<font color=\"blue\">WARNING: ".
571: "Connection buffer $dfilename: $cmd</font>");
572: &logperm("D:$server:$cmd");
573: return 'con_delayed';
574: } else {
575: &logthis("<font color=\"red\">CRITICAL:"
576: ." Critical connection failed: $server $cmd</font>");
577: &logperm("F:$server:$cmd");
578: return 'con_failed';
579: }
580: }
581: }
582: return $answer;
583: }
584:
585: # ------------------------------------------- check if return value is an error
586:
587: sub error {
588: my ($result) = @_;
589: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
590: if ($2 == 2) { return undef; }
591: return $1;
592: }
593: return undef;
594: }
595:
596: sub convert_and_load_session_env {
597: my ($lonidsdir,$handle)=@_;
598: my @profile;
599: {
600: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
601: if (!$opened) {
602: return 0;
603: }
604: flock($idf,LOCK_SH);
605: @profile=<$idf>;
606: close($idf);
607: }
608: my %temp_env;
609: foreach my $line (@profile) {
610: if ($line !~ m/=/) {
611: return 0;
612: }
613: chomp($line);
614: my ($envname,$envvalue)=split(/=/,$line,2);
615: $temp_env{&unescape($envname)} = &unescape($envvalue);
616: }
617: unlink("$lonidsdir/$handle.id");
618: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
619: 0640)) {
620: %disk_env = %temp_env;
621: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
622: untie(%disk_env);
623: }
624: return 1;
625: }
626:
627: # ------------------------------------------- Transfer profile into environment
628: my $env_loaded;
629: sub transfer_profile_to_env {
630: my ($lonidsdir,$handle,$force_transfer) = @_;
631: if (!$force_transfer && $env_loaded) { return; }
632:
633: if (!defined($lonidsdir)) {
634: $lonidsdir = $perlvar{'lonIDsDir'};
635: }
636: if (!defined($handle)) {
637: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
638: }
639:
640: my $convert;
641: {
642: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
643: if (!$opened) {
644: return;
645: }
646: flock($idf,LOCK_SH);
647: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
648: &GDBM_READER(),0640)) {
649: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
650: untie(%disk_env);
651: } else {
652: $convert = 1;
653: }
654: }
655: if ($convert) {
656: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
657: &logthis("Failed to load session, or convert session.");
658: }
659: }
660:
661: my %remove;
662: while ( my $envname = each(%env) ) {
663: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
664: if ($time < time-300) {
665: $remove{$key}++;
666: }
667: }
668: }
669:
670: $env{'user.environment'} = "$lonidsdir/$handle.id";
671: $env_loaded=1;
672: foreach my $expired_key (keys(%remove)) {
673: &delenv($expired_key);
674: }
675: }
676:
677: # ---------------------------------------------------- Check for valid session
678: sub check_for_valid_session {
679: my ($r,$name,$userhashref,$domref) = @_;
680: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
681: my ($lonidsdir,$linkname,$pubname,$secure,$lonid);
682: if ($name eq 'lonDAV') {
683: $lonidsdir=$r->dir_config('lonDAVsessDir');
684: } else {
685: $lonidsdir=$r->dir_config('lonIDsDir');
686: if ($name eq '') {
687: $name = 'lonID';
688: }
689: }
690: if ($name eq 'lonID') {
691: $secure = 'lonSID';
692: $linkname = 'lonLinkID';
693: $pubname = 'lonPubID';
694: if (exists($cookies{$secure})) {
695: $lonid=$cookies{$secure};
696: } elsif (exists($cookies{$name})) {
697: $lonid=$cookies{$name};
698: } elsif ((exists($cookies{$linkname})) && ($ENV{'SERVER_PORT'} != 443)) {
699: $lonid=$cookies{$linkname};
700: } elsif (exists($cookies{$pubname})) {
701: $lonid=$cookies{$pubname};
702: }
703: } else {
704: $lonid=$cookies{$name};
705: }
706: return undef if (!$lonid);
707:
708: my $handle=&LONCAPA::clean_handle($lonid->value);
709: if (-l "$lonidsdir/$handle.id") {
710: my $link = readlink("$lonidsdir/$handle.id");
711: if ((-e $link) && ($link =~ m{^\Q$lonidsdir\E/(.+)\.id$})) {
712: $handle = $1;
713: }
714: }
715: if (!-e "$lonidsdir/$handle.id") {
716: if ((ref($domref)) && ($name eq 'lonID') &&
717: ($handle =~ /^($match_username)\_\d+\_($match_domain)\_(.+)$/)) {
718: my ($possuname,$possudom,$possuhome) = ($1,$2,$3);
719: if ((&domain($possudom) ne '') && (&homeserver($possuname,$possudom) eq $possuhome)) {
720: $$domref = $possudom;
721: }
722: }
723: return undef;
724: }
725:
726: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
727: return undef if (!$opened);
728:
729: flock($idf,LOCK_SH);
730: my %disk_env;
731: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
732: &GDBM_READER(),0640)) {
733: return undef;
734: }
735:
736: if (!defined($disk_env{'user.name'})
737: || !defined($disk_env{'user.domain'})) {
738: untie(%disk_env);
739: return undef;
740: }
741:
742: if (ref($userhashref) eq 'HASH') {
743: $userhashref->{'name'} = $disk_env{'user.name'};
744: $userhashref->{'domain'} = $disk_env{'user.domain'};
745: if ($disk_env{'request.role'}) {
746: $userhashref->{'role'} = $disk_env{'request.role'};
747: }
748: $userhashref->{'lti'} = $disk_env{'request.lti.login'};
749: if ($userhashref->{'lti'}) {
750: $userhashref->{'ltitarget'} = $disk_env{'request.lti.target'};
751: $userhashref->{'ltiuri'} = $disk_env{'request.lti.uri'};
752: }
753: }
754: untie(%disk_env);
755:
756: return $handle;
757: }
758:
759: sub timed_flock {
760: my ($file,$lock_type) = @_;
761: my $failed=0;
762: eval {
763: local $SIG{__DIE__}='DEFAULT';
764: local $SIG{ALRM}=sub {
765: $failed=1;
766: die("failed lock");
767: };
768: alarm(13);
769: flock($file,$lock_type);
770: alarm(0);
771: };
772: if ($failed) {
773: return undef;
774: } else {
775: return 1;
776: }
777: }
778:
779: sub get_sessionfile_vars {
780: my ($handle,$lonidsdir,$storearr) = @_;
781: my %returnhash;
782: unless (ref($storearr) eq 'ARRAY') {
783: return %returnhash;
784: }
785: if (-l "$lonidsdir/$handle.id") {
786: my $link = readlink("$lonidsdir/$handle.id");
787: if ((-e $link) && ($link =~ m{^\Q$lonidsdir\E/(.+)\.id$})) {
788: $handle = $1;
789: }
790: }
791: if ((-e "$lonidsdir/$handle.id") &&
792: ($handle =~ /^($match_username)\_\d+\_($match_domain)\_(.+)$/)) {
793: my ($possuname,$possudom,$possuhome) = ($1,$2,$3);
794: if ((&domain($possudom) ne '') && (&homeserver($possuname,$possudom) eq $possuhome)) {
795: if (open(my $idf,'+<',"$lonidsdir/$handle.id")) {
796: flock($idf,LOCK_SH);
797: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
798: &GDBM_READER(),0640)) {
799: foreach my $item (@{$storearr}) {
800: $returnhash{$item} = $disk_env{$item};
801: }
802: untie(%disk_env);
803: }
804: }
805: }
806: }
807: return %returnhash;
808: }
809:
810: # ---------------------------------------------------------- Append Environment
811:
812: sub appenv {
813: my ($newenv,$roles) = @_;
814: if (ref($newenv) eq 'HASH') {
815: foreach my $key (keys(%{$newenv})) {
816: my $refused = 0;
817: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
818: $refused = 1;
819: if (ref($roles) eq 'ARRAY') {
820: my ($type,$role) = ($key =~ m{^user\.(role|priv)\.(.+?)\./});
821: if (grep(/^\Q$role\E$/,@{$roles})) {
822: $refused = 0;
823: }
824: }
825: }
826: if ($refused) {
827: &logthis("<font color=\"blue\">WARNING: ".
828: "Attempt to modify environment ".$key." to ".$newenv->{$key}
829: .'</font>');
830: delete($newenv->{$key});
831: } else {
832: $env{$key}=$newenv->{$key};
833: }
834: }
835: my $lonids = $perlvar{'lonIDsDir'};
836: if ($env{'user.environment'} =~ m{^\Q$lonids/\E$match_username\_\d+\_$match_domain\_[\w\-.]+\.id$}) {
837: my $opened = open(my $env_file,'+<',$env{'user.environment'});
838: if ($opened
839: && &timed_flock($env_file,LOCK_EX)
840: &&
841: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
842: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
843: while (my ($key,$value) = each(%{$newenv})) {
844: $disk_env{$key} = $value;
845: }
846: untie(%disk_env);
847: }
848: }
849: }
850: return 'ok';
851: }
852: # ----------------------------------------------------- Delete from Environment
853:
854: sub delenv {
855: my ($delthis,$regexp,$roles) = @_;
856: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
857: my $refused = 1;
858: if (ref($roles) eq 'ARRAY') {
859: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
860: if (grep(/^\Q$role\E$/,@{$roles})) {
861: $refused = 0;
862: }
863: }
864: if ($refused) {
865: &logthis("<font color=\"blue\">WARNING: ".
866: "Attempt to delete from environment ".$delthis);
867: return 'error';
868: }
869: }
870: my $opened = open(my $env_file,'+<',$env{'user.environment'});
871: if ($opened
872: && &timed_flock($env_file,LOCK_EX)
873: &&
874: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
875: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
876: foreach my $key (keys(%disk_env)) {
877: if ($regexp) {
878: if ($key=~/^$delthis/) {
879: delete($env{$key});
880: delete($disk_env{$key});
881: }
882: } else {
883: if ($key=~/^\Q$delthis\E/) {
884: delete($env{$key});
885: delete($disk_env{$key});
886: }
887: }
888: }
889: untie(%disk_env);
890: }
891: return 'ok';
892: }
893:
894: sub get_env_multiple {
895: my ($name) = @_;
896: my @values;
897: if (defined($env{$name})) {
898: # exists is it an array
899: if (ref($env{$name})) {
900: @values=@{ $env{$name} };
901: } else {
902: $values[0]=$env{$name};
903: }
904: }
905: return(@values);
906: }
907:
908: # ------------------------------------------------------------------- Locking
909:
910: sub set_lock {
911: my ($text)=@_;
912: $locknum++;
913: my $id=$$.'-'.$locknum;
914: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
915: 'session.lock.'.$id => $text});
916: return $id;
917: }
918:
919: sub get_locks {
920: my $num=0;
921: my %texts=();
922: foreach my $lock (split(/\,/,$env{'session.locks'})) {
923: if ($lock=~/\w/) {
924: $num++;
925: $texts{$lock}=$env{'session.lock.'.$lock};
926: }
927: }
928: return ($num,%texts);
929: }
930:
931: sub remove_lock {
932: my ($id)=@_;
933: my $newlocks='';
934: foreach my $lock (split(/\,/,$env{'session.locks'})) {
935: if (($lock=~/\w/) && ($lock ne $id)) {
936: $newlocks.=','.$lock;
937: }
938: }
939: &appenv({'session.locks' => $newlocks});
940: &delenv('session.lock.'.$id);
941: }
942:
943: sub remove_all_locks {
944: my $activelocks=$env{'session.locks'};
945: foreach my $lock (split(/\,/,$env{'session.locks'})) {
946: if ($lock=~/\w/) {
947: &remove_lock($lock);
948: }
949: }
950: }
951:
952:
953: # ------------------------------------------ Find out current server userload
954: sub userload {
955: my $numusers=0;
956: {
957: opendir(LONIDS,$perlvar{'lonIDsDir'});
958: my $filename;
959: my $curtime=time;
960: while ($filename=readdir(LONIDS)) {
961: next if ($filename eq '.' || $filename eq '..');
962: next if ($filename =~ /publicuser_\d+\.id/);
963: next if ($filename =~ /^[a-f0-9]+_linked\.id$/);
964: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
965: if ($curtime-$mtime < 1800) { $numusers++; }
966: }
967: closedir(LONIDS);
968: }
969: my $userloadpercent=0;
970: my $maxuserload=$perlvar{'lonUserLoadLim'};
971: if ($maxuserload) {
972: $userloadpercent=100*$numusers/$maxuserload;
973: }
974: $userloadpercent=sprintf("%.2f",$userloadpercent);
975: return $userloadpercent;
976: }
977:
978: # ------------------------------ Find server with least workload from spare.tab
979:
980: sub spareserver {
981: my ($r,$loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
982: my $spare_server;
983: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
984: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
985: : $userloadpercent;
986: my ($uint_dom,$remotesessions);
987: if (($udom ne '') && (&domain($udom) ne '')) {
988: my $uprimary_id = &domain($udom,'primary');
989: $uint_dom = &internet_dom($uprimary_id);
990: my %udomdefaults = &get_domain_defaults($udom);
991: $remotesessions = $udomdefaults{'remotesessions'};
992: }
993: my $spareshash = &this_host_spares($udom);
994: if (ref($spareshash) eq 'HASH') {
995: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
996: foreach my $try_server (@{ $spareshash->{'primary'} }) {
997: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
998: $try_server));
999: ($spare_server, $lowest_load) =
1000: &compare_server_load($try_server, $spare_server, $lowest_load);
1001: }
1002: }
1003:
1004: my $found_server = ($spare_server ne '' && $lowest_load < 100);
1005:
1006: if (!$found_server) {
1007: if (ref($spareshash->{'default'}) eq 'ARRAY') {
1008: foreach my $try_server (@{ $spareshash->{'default'} }) {
1009: next unless (&spare_can_host($udom,$uint_dom,
1010: $remotesessions,$try_server));
1011: ($spare_server, $lowest_load) =
1012: &compare_server_load($try_server, $spare_server, $lowest_load);
1013: }
1014: }
1015: }
1016: }
1017:
1018: if (!$want_server_name) {
1019: if (defined($spare_server)) {
1020: my $hostname = &hostname($spare_server);
1021: if (defined($hostname)) {
1022: my $protocol = 'http';
1023: if ($protocol{$spare_server} eq 'https') {
1024: $protocol = $protocol{$spare_server};
1025: }
1026: my $alias = &use_proxy_alias($r,$spare_server);
1027: $hostname = $alias if ($alias ne '');
1028: $spare_server = $protocol.'://'.$hostname;
1029: }
1030: }
1031: }
1032: return $spare_server;
1033: }
1034:
1035: sub compare_server_load {
1036: my ($try_server, $spare_server, $lowest_load, $required) = @_;
1037:
1038: if ($required) {
1039: my ($reqdmajor,$reqdminor) = ($required =~ /^(\d+)\.(\d+)$/);
1040: my $remoterev = &get_server_loncaparev(undef,$try_server);
1041: my ($major,$minor) = ($remoterev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
1042: if (($major eq '' && $minor eq '') ||
1043: (($reqdmajor > $major) || (($reqdmajor == $major) && ($reqdminor > $minor)))) {
1044: return ($spare_server,$lowest_load);
1045: }
1046: }
1047:
1048: my $loadans = &reply('load', $try_server);
1049: my $userloadans = &reply('userload',$try_server);
1050:
1051: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
1052: return ($spare_server, $lowest_load); #didn't get a number from the server
1053: }
1054:
1055: my $load;
1056: if ($loadans =~ /\d/) {
1057: if ($userloadans =~ /\d/) {
1058: #both are numbers, pick the bigger one
1059: $load = ($loadans > $userloadans) ? $loadans
1060: : $userloadans;
1061: } else {
1062: $load = $loadans;
1063: }
1064: } else {
1065: $load = $userloadans;
1066: }
1067:
1068: if (($load =~ /\d/) && ($load < $lowest_load)) {
1069: $spare_server = $try_server;
1070: $lowest_load = $load;
1071: }
1072: return ($spare_server,$lowest_load);
1073: }
1074:
1075: # --------------------------- ask offload servers if user already has a session
1076: sub find_existing_session {
1077: my ($udom,$uname) = @_;
1078: my $spareshash = &this_host_spares($udom);
1079: if (ref($spareshash) eq 'HASH') {
1080: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
1081: foreach my $try_server (@{ $spareshash->{'primary'} }) {
1082: return $try_server if (&has_user_session($try_server, $udom, $uname));
1083: }
1084: }
1085: if (ref($spareshash->{'default'}) eq 'ARRAY') {
1086: foreach my $try_server (@{ $spareshash->{'default'} }) {
1087: return $try_server if (&has_user_session($try_server, $udom, $uname));
1088: }
1089: }
1090: }
1091: return;
1092: }
1093:
1094: sub delusersession {
1095: my ($lonid,$udom,$uname) = @_;
1096: my $uprimary_id = &domain($udom,'primary');
1097: my $uintdom = &internet_dom($uprimary_id);
1098: my $intdom = &internet_dom($lonid);
1099: my $serverhomedom = &host_domain($lonid);
1100: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1101: return &reply(join(':','delusersession',
1102: map {&escape($_)} ($udom,$uname)),$lonid);
1103: }
1104: return;
1105: }
1106:
1107: # check if user's browser sent load balancer cookie and server still has session
1108: # and is not overloaded.
1109: sub check_for_balancer_cookie {
1110: my ($r,$update_mtime) = @_;
1111: my ($otherserver,$cookie);
1112: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
1113: if (exists($cookies{'balanceID'})) {
1114: my $balid = $cookies{'balanceID'};
1115: $cookie=&LONCAPA::clean_handle($balid->value);
1116: my $balancedir=$r->dir_config('lonBalanceDir');
1117: if ((-d $balancedir) && (-e "$balancedir/$cookie.id")) {
1118: if ($cookie =~ /^($match_domain)_($match_username)_[a-f0-9]+$/) {
1119: my ($possudom,$possuname) = ($1,$2);
1120: my $has_session = 0;
1121: if ((&domain($possudom) ne '') &&
1122: (&homeserver($possuname,$possudom) ne 'no_host')) {
1123: my $try_server;
1124: my $opened = open(my $idf,'+<',"$balancedir/$cookie.id");
1125: if ($opened) {
1126: flock($idf,LOCK_SH);
1127: while (my $line = <$idf>) {
1128: chomp($line);
1129: if (&hostname($line) ne '') {
1130: $try_server = $line;
1131: last;
1132: }
1133: }
1134: close($idf);
1135: if (($try_server) &&
1136: (&has_user_session($try_server,$possudom,$possuname))) {
1137: my $lowest_load = 30000;
1138: ($otherserver,$lowest_load) =
1139: &compare_server_load($try_server,undef,$lowest_load);
1140: if ($otherserver ne '' && $lowest_load < 100) {
1141: $has_session = 1;
1142: } else {
1143: undef($otherserver);
1144: }
1145: }
1146: }
1147: }
1148: if ($has_session) {
1149: if ($update_mtime) {
1150: my $atime = my $mtime = time;
1151: utime($atime,$mtime,"$balancedir/$cookie.id");
1152: }
1153: } else {
1154: unlink("$balancedir/$cookie.id");
1155: }
1156: }
1157: }
1158: }
1159: return ($otherserver,$cookie);
1160: }
1161:
1162: sub updatebalcookie {
1163: my ($cookie,$balancer,$lastentry)=@_;
1164: if ($cookie =~ /^($match_domain)\_($match_username)\_[a-f0-9]{32}$/) {
1165: my ($udom,$uname) = ($1,$2);
1166: my $uprimary_id = &domain($udom,'primary');
1167: my $uintdom = &internet_dom($uprimary_id);
1168: my $intdom = &internet_dom($balancer);
1169: my $serverhomedom = &host_domain($balancer);
1170: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1171: return &reply('updatebalcookie:'.&escape($cookie).':'.&escape($lastentry),$balancer);
1172: }
1173: }
1174: return;
1175: }
1176:
1177: sub delbalcookie {
1178: my ($cookie,$balancer) =@_;
1179: if ($cookie =~ /^($match_domain)\_($match_username)\_[a-f0-9]{32}$/) {
1180: my ($udom,$uname) = ($1,$2);
1181: my $uprimary_id = &domain($udom,'primary');
1182: my $uintdom = &internet_dom($uprimary_id);
1183: my $intdom = &internet_dom($balancer);
1184: my $serverhomedom = &host_domain($balancer);
1185: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1186: return &reply('delbalcookie:'.&escape($cookie),$balancer);
1187: }
1188: }
1189: }
1190:
1191: # -------------------------------- ask if server already has a session for user
1192: sub has_user_session {
1193: my ($lonid,$udom,$uname) = @_;
1194: my $result = &reply(join(':','userhassession',
1195: map {&escape($_)} ($udom,$uname)),$lonid);
1196: return 1 if ($result eq 'ok');
1197:
1198: return 0;
1199: }
1200:
1201: # --------- determine least loaded server in a user's domain which allows login
1202:
1203: sub choose_server {
1204: my ($udom,$checkloginvia,$required,$skiploadbal) = @_;
1205: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
1206: my %servers = &get_servers($udom);
1207: my $lowest_load = 30000;
1208: my ($login_host,$hostname,$portal_path,$isredirect,$balancers);
1209: if ($skiploadbal) {
1210: ($balancers,my $cached)=&is_cached_new('loadbalancing',$udom);
1211: unless (defined($cached)) {
1212: my $cachetime = 60*60*24;
1213: my %domconfig =
1214: &get_dom('configuration',['loadbalancing'],$udom);
1215: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1216: $balancers = &do_cache_new('loadbalancing',$udom,$domconfig{'loadbalancing'},
1217: $cachetime);
1218: }
1219: }
1220: }
1221: foreach my $lonhost (keys(%servers)) {
1222: if ($skiploadbal) {
1223: if (ref($balancers) eq 'HASH') {
1224: next if (exists($balancers->{$lonhost}));
1225: }
1226: }
1227: my $loginvia;
1228: if ($checkloginvia) {
1229: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
1230: if ($loginvia) {
1231: my ($server,$path) = split(/:/,$loginvia);
1232: ($login_host, $lowest_load) =
1233: &compare_server_load($server, $login_host, $lowest_load, $required);
1234: if ($login_host eq $server) {
1235: $portal_path = $path;
1236: $isredirect = 1;
1237: }
1238: } else {
1239: ($login_host, $lowest_load) =
1240: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1241: if ($login_host eq $lonhost) {
1242: $portal_path = '';
1243: $isredirect = '';
1244: }
1245: }
1246: } else {
1247: ($login_host, $lowest_load) =
1248: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1249: }
1250: }
1251: if ($login_host ne '') {
1252: $hostname = &hostname($login_host);
1253: }
1254: return ($login_host,$hostname,$portal_path,$isredirect,$lowest_load);
1255: }
1256:
1257: sub get_course_sessions {
1258: my ($cnum,$cdom,$lastactivity) = @_;
1259: my %servers = &internet_dom_servers($cdom);
1260: my %returnhash;
1261: foreach my $server (sort(keys(%servers))) {
1262: my $rep = &reply("coursesessions:$cdom:$cnum:$lastactivity",$server);
1263: my @pairs=split(/\&/,$rep);
1264: unless (($rep eq 'unknown_cmd') || ($rep =~ /^error/)) {
1265: foreach my $item (@pairs) {
1266: my ($key,$value)=split(/=/,$item,2);
1267: $key = &unescape($key);
1268: next if ($key =~ /^error: 2 /);
1269: if (exists($returnhash{$key})) {
1270: next if ($value < $returnhash{$key});
1271: }
1272: $returnhash{$key}=$value;
1273: }
1274: }
1275: }
1276: return %returnhash;
1277: }
1278:
1279: # --------------------------------------------- Try to change a user's password
1280:
1281: sub changepass {
1282: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
1283: $currentpass = &escape($currentpass);
1284: $newpass = &escape($newpass);
1285: my $lonhost = $perlvar{'lonHostID'};
1286: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
1287: $server);
1288: if (! $answer) {
1289: &logthis("No reply on password change request to $server ".
1290: "by $uname in domain $udom.");
1291: } elsif ($answer =~ "^ok") {
1292: &logthis("$uname in $udom successfully changed their password ".
1293: "on $server.");
1294: } elsif ($answer =~ "^pwchange_failure") {
1295: &logthis("$uname in $udom was unable to change their password ".
1296: "on $server. The action was blocked by either lcpasswd ".
1297: "or pwchange");
1298: } elsif ($answer =~ "^non_authorized") {
1299: &logthis("$uname in $udom did not get their password correct when ".
1300: "attempting to change it on $server.");
1301: } elsif ($answer =~ "^auth_mode_error") {
1302: &logthis("$uname in $udom attempted to change their password despite ".
1303: "not being locally or internally authenticated on $server.");
1304: } elsif ($answer =~ "^unknown_user") {
1305: &logthis("$uname in $udom attempted to change their password ".
1306: "on $server but were unable to because $server is not ".
1307: "their home server.");
1308: } elsif ($answer =~ "^refused") {
1309: &logthis("$server refused to change $uname in $udom password because ".
1310: "it was sent an unencrypted request to change the password.");
1311: } elsif ($answer =~ "invalid_client") {
1312: &logthis("$server refused to change $uname in $udom password because ".
1313: "it was a reset by e-mail originating from an invalid server.");
1314: } elsif ($answer =~ "^prioruse") {
1315: &logthis("$server refused to change $uname in $udom password because ".
1316: "the password had been used before");
1317: }
1318: return $answer;
1319: }
1320:
1321: # ----------------------- Try to determine user's current authentication scheme
1322:
1323: sub queryauthenticate {
1324: my ($uname,$udom)=@_;
1325: my $uhome=&homeserver($uname,$udom);
1326: if ((!$uhome) || ($uhome eq 'no_host')) {
1327: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1328: return 'no_host';
1329: }
1330: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1331: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1332: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1333: }
1334: return $answer;
1335: }
1336:
1337: # --------- Try to authenticate user from domain's lib servers (first this one)
1338:
1339: sub authenticate {
1340: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1341: $upass=&escape($upass);
1342: $uname= &LONCAPA::clean_username($uname);
1343: my $uhome=&homeserver($uname,$udom,1);
1344: my $newhome;
1345: if ((!$uhome) || ($uhome eq 'no_host')) {
1346: # Maybe the machine was offline and only re-appeared again recently?
1347: &reconlonc();
1348: # One more
1349: $uhome=&homeserver($uname,$udom,1);
1350: if (($uhome eq 'no_host') && $checkdefauth) {
1351: if (defined(&domain($udom,'primary'))) {
1352: $newhome=&domain($udom,'primary');
1353: }
1354: if ($newhome ne '') {
1355: $uhome = $newhome;
1356: }
1357: }
1358: if ((!$uhome) || ($uhome eq 'no_host')) {
1359: &logthis("User $uname at $udom is unknown in authenticate");
1360: return 'no_host';
1361: }
1362: }
1363: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1364: if ($answer eq 'authorized') {
1365: if ($newhome) {
1366: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1367: return 'no_account_on_host';
1368: } else {
1369: &logthis("User $uname at $udom authorized by $uhome");
1370: return $uhome;
1371: }
1372: }
1373: if ($answer eq 'non_authorized') {
1374: &logthis("User $uname at $udom rejected by $uhome");
1375: return 'no_host';
1376: }
1377: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1378: return 'no_host';
1379: }
1380:
1381: sub can_switchserver {
1382: my ($udom,$home) = @_;
1383: my ($canswitch,@intdoms);
1384: my $internet_names = &get_internet_names($home);
1385: if (ref($internet_names) eq 'ARRAY') {
1386: @intdoms = @{$internet_names};
1387: }
1388: my $uint_dom = &internet_dom(&domain($udom,'primary'));
1389: if ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
1390: $canswitch = 1;
1391: } else {
1392: my $serverhomeID = &get_server_homeID(&hostname($home));
1393: my $serverhomedom = &host_domain($serverhomeID);
1394: my %defdomdefaults = &get_domain_defaults($serverhomedom);
1395: my %udomdefaults = &get_domain_defaults($udom);
1396: my $remoterev = &get_server_loncaparev('',$home);
1397: $canswitch = &can_host_session($udom,$home,$remoterev,
1398: $udomdefaults{'remotesessions'},
1399: $defdomdefaults{'hostedsessions'});
1400: }
1401: return $canswitch;
1402: }
1403:
1404: sub can_host_session {
1405: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1406: my $canhost = 1;
1407: my $host_idn = &internet_dom($lonhost);
1408: if (ref($remotesessions) eq 'HASH') {
1409: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1410: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1411: $canhost = 0;
1412: } else {
1413: $canhost = 1;
1414: }
1415: }
1416: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1417: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1418: $canhost = 1;
1419: } else {
1420: $canhost = 0;
1421: }
1422: }
1423: if ($canhost) {
1424: if ($remotesessions->{'version'} ne '') {
1425: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1426: if ($reqmajor ne '' && $reqminor ne '') {
1427: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1428: my $major = $1;
1429: my $minor = $2;
1430: if (($major < $reqmajor ) ||
1431: (($major == $reqmajor) && ($minor < $reqminor))) {
1432: $canhost = 0;
1433: }
1434: } else {
1435: $canhost = 0;
1436: }
1437: }
1438: }
1439: }
1440: }
1441: if ($canhost) {
1442: if (ref($hostedsessions) eq 'HASH') {
1443: my $uprimary_id = &domain($udom,'primary');
1444: my $uint_dom = &internet_dom($uprimary_id);
1445: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1446: if (($uint_dom ne '') &&
1447: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1448: $canhost = 0;
1449: } else {
1450: $canhost = 1;
1451: }
1452: }
1453: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1454: if (($uint_dom ne '') &&
1455: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1456: $canhost = 1;
1457: } else {
1458: $canhost = 0;
1459: }
1460: }
1461: }
1462: }
1463: return $canhost;
1464: }
1465:
1466: sub spare_can_host {
1467: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1468: my $canhost=1;
1469: my $try_server_hostname = &hostname($try_server);
1470: my $serverhomeID = &get_server_homeID($try_server_hostname);
1471: my $serverhomedom = &host_domain($serverhomeID);
1472: my %defdomdefaults = &get_domain_defaults($serverhomedom);
1473: if (ref($defdomdefaults{'offloadnow'}) eq 'HASH') {
1474: if ($defdomdefaults{'offloadnow'}{$try_server}) {
1475: $canhost = 0;
1476: }
1477: }
1478: if ($canhost) {
1479: if (ref($defdomdefaults{'offloadoth'}) eq 'HASH') {
1480: if ($defdomdefaults{'offloadoth'}{$try_server}) {
1481: unless (&shared_institution($udom,$try_server)) {
1482: $canhost = 0;
1483: }
1484: }
1485: }
1486: }
1487: if (($canhost) && ($uint_dom)) {
1488: my @intdoms;
1489: my $internet_names = &get_internet_names($try_server);
1490: if (ref($internet_names) eq 'ARRAY') {
1491: @intdoms = @{$internet_names};
1492: }
1493: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1494: my $remoterev = &get_server_loncaparev(undef,$try_server);
1495: $canhost = &can_host_session($udom,$try_server,$remoterev,
1496: $remotesessions,
1497: $defdomdefaults{'hostedsessions'});
1498: }
1499: }
1500: return $canhost;
1501: }
1502:
1503: sub this_host_spares {
1504: my ($dom) = @_;
1505: my ($dom_in_use,$lonhost_in_use,$result);
1506: my @hosts = ¤t_machine_ids();
1507: foreach my $lonhost (@hosts) {
1508: if (&host_domain($lonhost) eq $dom) {
1509: $dom_in_use = $dom;
1510: $lonhost_in_use = $lonhost;
1511: last;
1512: }
1513: }
1514: if ($dom_in_use ne '') {
1515: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1516: }
1517: if (ref($result) ne 'HASH') {
1518: $lonhost_in_use = $perlvar{'lonHostID'};
1519: $dom_in_use = &host_domain($lonhost_in_use);
1520: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1521: if (ref($result) ne 'HASH') {
1522: $result = \%spareid;
1523: }
1524: }
1525: return $result;
1526: }
1527:
1528: sub spares_for_offload {
1529: my ($dom_in_use,$lonhost_in_use) = @_;
1530: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1531: if (defined($cached)) {
1532: return $result;
1533: } else {
1534: my $cachetime = 60*60*24;
1535: my %domconfig =
1536: &get_dom('configuration',['usersessions'],$dom_in_use);
1537: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1538: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1539: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1540: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1541: }
1542: }
1543: }
1544: }
1545: return;
1546: }
1547:
1548: sub get_lonbalancer_config {
1549: my ($servers) = @_;
1550: my ($currbalancer,$currtargets);
1551: if (ref($servers) eq 'HASH') {
1552: foreach my $server (keys(%{$servers})) {
1553: my %what = (
1554: spareid => 1,
1555: perlvar => 1,
1556: );
1557: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1558: if ($result eq 'ok') {
1559: if (ref($returnhash) eq 'HASH') {
1560: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1561: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1562: $currbalancer = $server;
1563: $currtargets = {};
1564: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1565: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1566: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1567: }
1568: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1569: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1570: }
1571: }
1572: last;
1573: }
1574: }
1575: }
1576: }
1577: }
1578: }
1579: return ($currbalancer,$currtargets);
1580: }
1581:
1582: sub check_loadbalancing {
1583: my ($uname,$udom,$caller) = @_;
1584: my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
1585: $rule_in_effect,$offloadto,$otherserver,$setcookie,$dom_balancers);
1586: my $lonhost = $perlvar{'lonHostID'};
1587: my @hosts = ¤t_machine_ids();
1588: my $uprimary_id = &domain($udom,'primary');
1589: my $uintdom = &internet_dom($uprimary_id);
1590: my $intdom = &internet_dom($lonhost);
1591: my $serverhomedom = &host_domain($lonhost);
1592: my $domneedscache;
1593: my $cachetime = 60*60*24;
1594:
1595: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1596: $dom_in_use = $udom;
1597: $homeintdom = 1;
1598: } else {
1599: $dom_in_use = $serverhomedom;
1600: }
1601: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1602: unless (defined($cached)) {
1603: my %domconfig =
1604: &get_dom('configuration',['loadbalancing'],$dom_in_use);
1605: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1606: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1607: } else {
1608: $domneedscache = $dom_in_use;
1609: }
1610: }
1611: if (ref($result) eq 'HASH') {
1612: ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers) =
1613: &check_balancer_result($result,@hosts);
1614: if ($is_balancer) {
1615: if (ref($currrules) eq 'HASH') {
1616: if ($homeintdom) {
1617: if ($uname ne '') {
1618: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1619: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1620: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1621: $rule_in_effect = $currrules->{'_LC_author'};
1622: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1623: $rule_in_effect = $currrules->{'_LC_adv'}
1624: }
1625: }
1626: if ($rule_in_effect eq '') {
1627: my %userenv = &userenvironment($udom,$uname,'inststatus');
1628: if ($userenv{'inststatus'} ne '') {
1629: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1630: my ($othertitle,$usertypes,$types) =
1631: &Apache::loncommon::sorted_inst_types($udom);
1632: if (ref($types) eq 'ARRAY') {
1633: foreach my $type (@{$types}) {
1634: if (grep(/^\Q$type\E$/,@statuses)) {
1635: if (exists($currrules->{$type})) {
1636: $rule_in_effect = $currrules->{$type};
1637: }
1638: }
1639: }
1640: }
1641: } else {
1642: if (exists($currrules->{'default'})) {
1643: $rule_in_effect = $currrules->{'default'};
1644: }
1645: }
1646: }
1647: } else {
1648: if (exists($currrules->{'default'})) {
1649: $rule_in_effect = $currrules->{'default'};
1650: }
1651: }
1652: } else {
1653: if ($currrules->{'_LC_external'} ne '') {
1654: $rule_in_effect = $currrules->{'_LC_external'};
1655: }
1656: }
1657: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1658: $uname,$udom);
1659: }
1660: }
1661: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1662: ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1663: unless (defined($cached)) {
1664: my %domconfig =
1665: &get_dom('configuration',['loadbalancing'],$serverhomedom);
1666: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1667: $result = &do_cache_new('loadbalancing',$serverhomedom,$domconfig{'loadbalancing'},$cachetime);
1668: } else {
1669: $domneedscache = $serverhomedom;
1670: }
1671: }
1672: if (ref($result) eq 'HASH') {
1673: ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers) =
1674: &check_balancer_result($result,@hosts);
1675: if ($is_balancer) {
1676: if (ref($currrules) eq 'HASH') {
1677: if ($currrules->{'_LC_internetdom'} ne '') {
1678: $rule_in_effect = $currrules->{'_LC_internetdom'};
1679: }
1680: }
1681: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1682: $uname,$udom);
1683: }
1684: } else {
1685: if ($perlvar{'lonBalancer'} eq 'yes') {
1686: $is_balancer = 1;
1687: $offloadto = &this_host_spares($dom_in_use);
1688: }
1689: unless (defined($cached)) {
1690: $domneedscache = $serverhomedom;
1691: }
1692: }
1693: } else {
1694: if ($perlvar{'lonBalancer'} eq 'yes') {
1695: $is_balancer = 1;
1696: $offloadto = &this_host_spares($dom_in_use);
1697: }
1698: unless (defined($cached)) {
1699: $domneedscache = $serverhomedom;
1700: }
1701: }
1702: if ($domneedscache) {
1703: &do_cache_new('loadbalancing',$domneedscache,$is_balancer,$cachetime);
1704: }
1705: if (($is_balancer) && ($caller ne 'switchserver')) {
1706: my $lowest_load = 30000;
1707: if (ref($offloadto) eq 'HASH') {
1708: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1709: foreach my $try_server (@{$offloadto->{'primary'}}) {
1710: ($otherserver,$lowest_load) =
1711: &compare_server_load($try_server,$otherserver,$lowest_load);
1712: }
1713: }
1714: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1715:
1716: if (!$found_server) {
1717: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1718: foreach my $try_server (@{$offloadto->{'default'}}) {
1719: ($otherserver,$lowest_load) =
1720: &compare_server_load($try_server,$otherserver,$lowest_load);
1721: }
1722: }
1723: }
1724: } elsif (ref($offloadto) eq 'ARRAY') {
1725: if (@{$offloadto} == 1) {
1726: $otherserver = $offloadto->[0];
1727: } elsif (@{$offloadto} > 1) {
1728: foreach my $try_server (@{$offloadto}) {
1729: ($otherserver,$lowest_load) =
1730: &compare_server_load($try_server,$otherserver,$lowest_load);
1731: }
1732: }
1733: }
1734: unless ($caller eq 'login') {
1735: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1736: $is_balancer = 0;
1737: if ($uname ne '' && $udom ne '') {
1738: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1739: &appenv({'user.loadbalexempt' => $lonhost,
1740: 'user.loadbalcheck.time' => time});
1741: }
1742: }
1743: }
1744: }
1745: }
1746: if (($is_balancer) && (!$homeintdom)) {
1747: undef($setcookie);
1748: }
1749: return ($is_balancer,$otherserver,$setcookie,$offloadto,$dom_balancers);
1750: }
1751:
1752: sub check_balancer_result {
1753: my ($result,@hosts) = @_;
1754: my ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers);
1755: if (ref($result) eq 'HASH') {
1756: if ($result->{'lonhost'} ne '') {
1757: my $currbalancer = $result->{'lonhost'};
1758: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1759: $is_balancer = 1;
1760: $currtargets = $result->{'targets'};
1761: $currrules = $result->{'rules'};
1762: }
1763: $dom_balancers = $currbalancer;
1764: } else {
1765: if (keys(%{$result})) {
1766: foreach my $key (keys(%{$result})) {
1767: if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&
1768: (ref($result->{$key}) eq 'HASH')) {
1769: $is_balancer = 1;
1770: $currrules = $result->{$key}{'rules'};
1771: $currtargets = $result->{$key}{'targets'};
1772: $setcookie = $result->{$key}{'cookie'};
1773: last;
1774: }
1775: }
1776: $dom_balancers = join(',',sort(keys(%{$result})));
1777: }
1778: }
1779: }
1780: return ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers);
1781: }
1782:
1783: sub get_loadbalancer_targets {
1784: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1785: my $offloadto;
1786: if ($rule_in_effect eq 'none') {
1787: return [$perlvar{'lonHostID'}];
1788: } elsif ($rule_in_effect eq '') {
1789: $offloadto = $currtargets;
1790: } else {
1791: if ($rule_in_effect eq 'homeserver') {
1792: my $homeserver = &homeserver($uname,$udom);
1793: if ($homeserver ne 'no_host') {
1794: $offloadto = [$homeserver];
1795: }
1796: } elsif ($rule_in_effect eq 'externalbalancer') {
1797: my %domconfig =
1798: &get_dom('configuration',['loadbalancing'],$udom);
1799: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1800: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1801: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1802: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1803: }
1804: }
1805: } else {
1806: my %servers = &internet_dom_servers($udom);
1807: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1808: if (&hostname($remotebalancer) ne '') {
1809: $offloadto = [$remotebalancer];
1810: }
1811: }
1812: } elsif (&hostname($rule_in_effect) ne '') {
1813: $offloadto = [$rule_in_effect];
1814: }
1815: }
1816: return $offloadto;
1817: }
1818:
1819: sub internet_dom_servers {
1820: my ($dom) = @_;
1821: my (%uniqservers,%servers);
1822: my $primaryserver = &hostname(&domain($dom,'primary'));
1823: my @machinedoms = &machine_domains($primaryserver);
1824: foreach my $mdom (@machinedoms) {
1825: my %currservers = %servers;
1826: my %server = &get_servers($mdom);
1827: %servers = (%currservers,%server);
1828: }
1829: my %by_hostname;
1830: foreach my $id (keys(%servers)) {
1831: push(@{$by_hostname{$servers{$id}}},$id);
1832: }
1833: foreach my $hostname (sort(keys(%by_hostname))) {
1834: if (@{$by_hostname{$hostname}} > 1) {
1835: my $match = 0;
1836: foreach my $id (@{$by_hostname{$hostname}}) {
1837: if (&host_domain($id) eq $dom) {
1838: $uniqservers{$id} = $hostname;
1839: $match = 1;
1840: }
1841: }
1842: unless ($match) {
1843: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1844: }
1845: } else {
1846: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1847: }
1848: }
1849: return %uniqservers;
1850: }
1851:
1852: sub trusted_domains {
1853: my ($cmdtype,$calldom) = @_;
1854: my ($trusted,$untrusted);
1855: if (&domain($calldom) eq '') {
1856: return ($trusted,$untrusted);
1857: }
1858: unless ($cmdtype =~ /^(content|shared|enroll|coaurem|othcoau|domroles|catalog|reqcrs|msg)$/) {
1859: return ($trusted,$untrusted);
1860: }
1861: my $callprimary = &domain($calldom,'primary');
1862: my $intcalldom = &internet_dom($callprimary);
1863: if ($intcalldom eq '') {
1864: return ($trusted,$untrusted);
1865: }
1866:
1867: my ($trustconfig,$cached)=&is_cached_new('trust',$calldom);
1868: unless (defined($cached)) {
1869: my %domconfig = &get_dom('configuration',['trust'],$calldom);
1870: &do_cache_new('trust',$calldom,$domconfig{'trust'},3600);
1871: $trustconfig = $domconfig{'trust'};
1872: }
1873: if (ref($trustconfig)) {
1874: my (%possexc,%possinc,@allexc,@allinc);
1875: if (ref($trustconfig->{$cmdtype}) eq 'HASH') {
1876: if (ref($trustconfig->{$cmdtype}->{'exc'}) eq 'ARRAY') {
1877: map { $possexc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'exc'}};
1878: }
1879: if (ref($trustconfig->{$cmdtype}->{'inc'}) eq 'ARRAY') {
1880: $possinc{$intcalldom} = 1;
1881: map { $possinc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'inc'}};
1882: }
1883: }
1884: if (keys(%possexc)) {
1885: if (keys(%possinc)) {
1886: foreach my $key (sort(keys(%possexc))) {
1887: next if ($key eq $intcalldom);
1888: unless ($possinc{$key}) {
1889: push(@allexc,$key);
1890: }
1891: }
1892: } else {
1893: @allexc = sort(keys(%possexc));
1894: }
1895: }
1896: if (keys(%possinc)) {
1897: $possinc{$intcalldom} = 1;
1898: @allinc = sort(keys(%possinc));
1899: }
1900: if ((@allexc > 0) || (@allinc > 0)) {
1901: my %doms_by_intdom;
1902: my %allintdoms = &all_host_intdom();
1903: my %alldoms = &all_host_domain();
1904: foreach my $key (%allintdoms) {
1905: if (ref($doms_by_intdom{$allintdoms{$key}}) eq 'ARRAY') {
1906: unless (grep(/^\Q$alldoms{$key}\E$/,@{$doms_by_intdom{$allintdoms{$key}}})) {
1907: push(@{$doms_by_intdom{$allintdoms{$key}}},$alldoms{$key});
1908: }
1909: } else {
1910: $doms_by_intdom{$allintdoms{$key}} = [$alldoms{$key}];
1911: }
1912: }
1913: foreach my $exc (@allexc) {
1914: if (ref($doms_by_intdom{$exc}) eq 'ARRAY') {
1915: push(@{$untrusted},@{$doms_by_intdom{$exc}});
1916: }
1917: }
1918: foreach my $inc (@allinc) {
1919: if (ref($doms_by_intdom{$inc}) eq 'ARRAY') {
1920: push(@{$trusted},@{$doms_by_intdom{$inc}});
1921: }
1922: }
1923: }
1924: }
1925: return ($trusted,$untrusted);
1926: }
1927:
1928: sub will_trust {
1929: my ($cmdtype,$domain,$possdom) = @_;
1930: return 1 if ($domain eq $possdom);
1931: my ($trustedref,$untrustedref) = &trusted_domains($cmdtype,$possdom);
1932: my $willtrust;
1933: if ((ref($trustedref) eq 'ARRAY') && (@{$trustedref} > 0)) {
1934: if (grep(/^\Q$domain\E$/,@{$trustedref})) {
1935: $willtrust = 1;
1936: }
1937: } elsif ((ref($untrustedref) eq 'ARRAY') && (@{$untrustedref} > 0)) {
1938: unless (grep(/^\Q$domain\E$/,@{$untrustedref})) {
1939: $willtrust = 1;
1940: }
1941: } else {
1942: $willtrust = 1;
1943: }
1944: return $willtrust;
1945: }
1946:
1947: # ---------------------- Find the homebase for a user from domain's lib servers
1948:
1949: my %homecache;
1950: sub homeserver {
1951: my ($uname,$udom,$ignoreBadCache)=@_;
1952: my $index="$uname:$udom";
1953:
1954: if (exists($homecache{$index})) { return $homecache{$index}; }
1955:
1956: my %servers = &get_servers($udom,'library');
1957: foreach my $tryserver (keys(%servers)) {
1958: next if ($ignoreBadCache ne 'true' &&
1959: exists($badServerCache{$tryserver}));
1960:
1961: my $answer=reply("home:$udom:$uname",$tryserver);
1962: if ($answer eq 'found') {
1963: delete($badServerCache{$tryserver});
1964: return $homecache{$index}=$tryserver;
1965: } elsif ($answer eq 'no_host') {
1966: $badServerCache{$tryserver}=1;
1967: }
1968: }
1969: return 'no_host';
1970: }
1971:
1972: # ----- Find the usernames behind a list of student/employee IDs or clicker IDs
1973:
1974: sub idget {
1975: my ($udom,$idsref,$namespace)=@_;
1976: my %returnhash=();
1977: my @ids=();
1978: if (ref($idsref) eq 'ARRAY') {
1979: @ids = @{$idsref};
1980: } else {
1981: return %returnhash;
1982: }
1983: if ($namespace eq '') {
1984: $namespace = 'ids';
1985: }
1986:
1987: my %servers = &get_servers($udom,'library');
1988: foreach my $tryserver (keys(%servers)) {
1989: my $idlist=join('&', map { &escape($_); } @ids);
1990: if ($namespace eq 'ids') {
1991: $idlist=~tr/A-Z/a-z/;
1992: }
1993: my $reply;
1994: if ($namespace eq 'ids') {
1995: $reply=&reply("idget:$udom:".$idlist,$tryserver);
1996: } else {
1997: $reply=&reply("getdom:$udom:$namespace:$idlist",$tryserver);
1998: }
1999: my @answer=();
2000: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
2001: @answer=split(/\&/,$reply);
2002: } ;
2003: my $i;
2004: for ($i=0;$i<=$#ids;$i++) {
2005: if ($answer[$i]) {
2006: $returnhash{$ids[$i]}=&unescape($answer[$i]);
2007: }
2008: }
2009: }
2010: return %returnhash;
2011: }
2012:
2013: # ------------------------------------- Find the IDs behind a list of usernames
2014:
2015: sub idrget {
2016: my ($udom,@unames)=@_;
2017: my %returnhash=();
2018: foreach my $uname (@unames) {
2019: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
2020: }
2021: return %returnhash;
2022: }
2023:
2024: # Store away a list of names and associated student/employee IDs or clicker IDs
2025:
2026: sub idput {
2027: my ($udom,$idsref,$uhom,$namespace)=@_;
2028: my %servers=();
2029: my %ids=();
2030: my %byid = ();
2031: if (ref($idsref) eq 'HASH') {
2032: %ids=%{$idsref};
2033: }
2034: if ($namespace eq '') {
2035: $namespace = 'ids';
2036: }
2037: foreach my $uname (keys(%ids)) {
2038: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
2039: if ($uhom eq '') {
2040: $uhom=&homeserver($uname,$udom);
2041: }
2042: if ($uhom ne 'no_host') {
2043: my $esc_unam=&escape($uname);
2044: if ($namespace eq 'ids') {
2045: my $id=&escape($ids{$uname});
2046: $id=~tr/A-Z/a-z/;
2047: my $esc_unam=&escape($uname);
2048: $servers{$uhom}.=$id.'='.$esc_unam.'&';
2049: } else {
2050: my @currids = split(/,/,$ids{$uname});
2051: foreach my $id (@currids) {
2052: $byid{$uhom}{$id} .= $uname.',';
2053: }
2054: }
2055: }
2056: }
2057: if ($namespace eq 'clickers') {
2058: foreach my $server (keys(%byid)) {
2059: if (ref($byid{$server}) eq 'HASH') {
2060: foreach my $id (keys(%{$byid{$server}})) {
2061: $byid{$server} =~ s/,$//;
2062: $servers{$uhom}.=&escape($id).'='.&escape($byid{$server}).'&';
2063: }
2064: }
2065: }
2066: }
2067: foreach my $server (keys(%servers)) {
2068: $servers{$server} =~ s/\&$//;
2069: if ($namespace eq 'ids') {
2070: &critical('idput:'.$udom.':'.$servers{$server},$server);
2071: } else {
2072: &critical('updateclickers:'.$udom.':add:'.$servers{$server},$server);
2073: }
2074: }
2075: }
2076:
2077: # ------------- Delete unwanted student/employee IDs or clicker IDs from domain
2078:
2079: sub iddel {
2080: my ($udom,$idshashref,$uhome,$namespace)=@_;
2081: my %result=();
2082: my %ids=();
2083: my %byid = ();
2084: if (ref($idshashref) eq 'HASH') {
2085: %ids=%{$idshashref};
2086: } else {
2087: return %result;
2088: }
2089: if ($namespace eq '') {
2090: $namespace = 'ids';
2091: }
2092: my %servers=();
2093: while (my ($id,$unamestr) = each(%ids)) {
2094: if ($namespace eq 'ids') {
2095: my $uhom = $uhome;
2096: if ($uhom eq '') {
2097: $uhom=&homeserver($unamestr,$udom);
2098: }
2099: if ($uhom ne 'no_host') {
2100: $servers{$uhom}.='&'.&escape($id);
2101: }
2102: } else {
2103: my @curritems = split(/,/,$ids{$id});
2104: foreach my $uname (@curritems) {
2105: my $uhom = $uhome;
2106: if ($uhom eq '') {
2107: $uhom=&homeserver($uname,$udom);
2108: }
2109: if ($uhom ne 'no_host') {
2110: $byid{$uhom}{$id} .= $uname.',';
2111: }
2112: }
2113: }
2114: }
2115: if ($namespace eq 'clickers') {
2116: foreach my $server (keys(%byid)) {
2117: if (ref($byid{$server}) eq 'HASH') {
2118: foreach my $id (keys(%{$byid{$server}})) {
2119: $byid{$server}{$id} =~ s/,$//;
2120: $servers{$server}.=&escape($id).'='.&escape($byid{$server}{$id}).'&';
2121: }
2122: }
2123: }
2124: }
2125: foreach my $server (keys(%servers)) {
2126: $servers{$server} =~ s/\&$//;
2127: if ($namespace eq 'ids') {
2128: $result{$server} = &critical('iddel:'.$udom.':'.$servers{$server},$uhome);
2129: } elsif ($namespace eq 'clickers') {
2130: $result{$server} = &critical('updateclickers:'.$udom.':del:'.$servers{$server},$server);
2131: }
2132: }
2133: return %result;
2134: }
2135:
2136: # ----- Update clicker ID-to-username look-ups in clickers.db on library server
2137:
2138: sub updateclickers {
2139: my ($udom,$action,$idshashref,$uhome,$critical) = @_;
2140: my %clickers;
2141: if (ref($idshashref) eq 'HASH') {
2142: %clickers=%{$idshashref};
2143: } else {
2144: return;
2145: }
2146: my $items='';
2147: foreach my $item (keys(%clickers)) {
2148: $items.=&escape($item).'='.&escape($clickers{$item}).'&';
2149: }
2150: $items=~s/\&$//;
2151: my $request = "updateclickers:$udom:$action:$items";
2152: if ($critical) {
2153: return &critical($request,$uhome);
2154: } else {
2155: return &reply($request,$uhome);
2156: }
2157: }
2158:
2159: # ------------------------------dump from db file owned by domainconfig user
2160: sub dump_dom {
2161: my ($namespace, $udom, $regexp) = @_;
2162:
2163: $udom ||= $env{'user.domain'};
2164:
2165: return () unless $udom;
2166:
2167: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
2168: }
2169:
2170: # ------------------------------------------ get items from domain db files
2171:
2172: sub get_dom {
2173: my ($namespace,$storearr,$udom,$uhome,$encrypt)=@_;
2174: return if ($udom eq 'public');
2175: my $items='';
2176: foreach my $item (@$storearr) {
2177: $items.=&escape($item).'&';
2178: }
2179: $items=~s/\&$//;
2180: if (!$udom) {
2181: $udom=$env{'user.domain'};
2182: return if ($udom eq 'public');
2183: if (defined(&domain($udom,'primary'))) {
2184: $uhome=&domain($udom,'primary');
2185: } else {
2186: undef($uhome);
2187: }
2188: } else {
2189: if (!$uhome) {
2190: if (defined(&domain($udom,'primary'))) {
2191: $uhome=&domain($udom,'primary');
2192: }
2193: }
2194: }
2195: if ($udom && $uhome && ($uhome ne 'no_host')) {
2196: my $rep;
2197: if (grep { $_ eq $uhome } ¤t_machine_ids()) {
2198: # domain information is hosted on this machine
2199: $rep = &LONCAPA::Lond::get_dom("getdom:$udom:$namespace:$items");
2200: } else {
2201: if ($encrypt) {
2202: $rep=&reply("encrypt:egetdom:$udom:$namespace:$items",$uhome);
2203: } else {
2204: $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
2205: }
2206: }
2207: my %returnhash;
2208: if ($rep eq '' || $rep =~ /^error: 2 /) {
2209: return %returnhash;
2210: }
2211: my @pairs=split(/\&/,$rep);
2212: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
2213: return @pairs;
2214: }
2215: my $i=0;
2216: foreach my $item (@$storearr) {
2217: $returnhash{$item}=&thaw_unescape($pairs[$i]);
2218: $i++;
2219: }
2220: return %returnhash;
2221: } else {
2222: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
2223: }
2224: }
2225:
2226: # -------------------------------------------- put items in domain db files
2227:
2228: sub put_dom {
2229: my ($namespace,$storehash,$udom,$uhome,$encrypt)=@_;
2230: if (!$udom) {
2231: $udom=$env{'user.domain'};
2232: if (defined(&domain($udom,'primary'))) {
2233: $uhome=&domain($udom,'primary');
2234: } else {
2235: undef($uhome);
2236: }
2237: } else {
2238: if (!$uhome) {
2239: if (defined(&domain($udom,'primary'))) {
2240: $uhome=&domain($udom,'primary');
2241: }
2242: }
2243: }
2244: if ($udom && $uhome && ($uhome ne 'no_host')) {
2245: my $items='';
2246: foreach my $item (keys(%$storehash)) {
2247: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
2248: }
2249: $items=~s/\&$//;
2250: if ($encrypt) {
2251: return &reply("encrypt:putdom:$udom:$namespace:$items",$uhome);
2252: } else {
2253: return &reply("putdom:$udom:$namespace:$items",$uhome);
2254: }
2255: } else {
2256: &logthis("put_dom failed - no homeserver and/or domain");
2257: }
2258: }
2259:
2260: # --------------------- newput for items in db file owned by domainconfig user
2261: sub newput_dom {
2262: my ($namespace,$storehash,$udom) = @_;
2263: my $result;
2264: if (!$udom) {
2265: $udom=$env{'user.domain'};
2266: }
2267: if ($udom) {
2268: my $uname = &get_domainconfiguser($udom);
2269: $result = &newput($namespace,$storehash,$udom,$uname);
2270: }
2271: return $result;
2272: }
2273:
2274: # --------------------- delete for items in db file owned by domainconfig user
2275: sub del_dom {
2276: my ($namespace,$storearr,$udom)=@_;
2277: if (ref($storearr) eq 'ARRAY') {
2278: if (!$udom) {
2279: $udom=$env{'user.domain'};
2280: }
2281: if ($udom) {
2282: my $uname = &get_domainconfiguser($udom);
2283: return &del($namespace,$storearr,$udom,$uname);
2284: }
2285: }
2286: }
2287:
2288: sub store_dom {
2289: my ($storehash,$id,$namespace,$dom,$home,$encrypt) = @_;
2290: $$storehash{'ip'}=&get_requestor_ip();
2291: $$storehash{'host'}=$perlvar{'lonHostID'};
2292: my $namevalue='';
2293: foreach my $key (keys(%{$storehash})) {
2294: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
2295: }
2296: $namevalue=~s/\&$//;
2297: if (grep { $_ eq $home } current_machine_ids()) {
2298: return LONCAPA::Lond::store_dom("storedom:$dom:$namespace:$id:$namevalue");
2299: } else {
2300: if ($namespace eq 'private') {
2301: return 'refused';
2302: } elsif ($encrypt) {
2303: return reply("encrypt:storedom:$dom:$namespace:$id:$namevalue",$home);
2304: } else {
2305: return reply("storedom:$dom:$namespace:$id:$namevalue",$home);
2306: }
2307: }
2308: }
2309:
2310: sub restore_dom {
2311: my ($id,$namespace,$dom,$home,$encrypt) = @_;
2312: my $answer;
2313: if (grep { $_ eq $home } current_machine_ids()) {
2314: $answer = LONCAPA::Lond::restore_dom("restoredom:$dom:$namespace:$id");
2315: } elsif ($namespace ne 'private') {
2316: if ($encrypt) {
2317: $answer=&reply("encrypt:restoredom:$dom:$namespace:$id",$home);
2318: } else {
2319: $answer=&reply("restoredom:$dom:$namespace:$id",$home);
2320: }
2321: }
2322: my %returnhash=();
2323: unless (($answer eq '') || ($answer eq 'con_lost') || ($answer eq 'refused') ||
2324: ($answer eq 'unknown_cmd') || ($answer eq 'rejected')) {
2325: foreach my $line (split(/\&/,$answer)) {
2326: my ($name,$value)=split(/\=/,$line);
2327: $returnhash{&unescape($name)}=&thaw_unescape($value);
2328: }
2329: my $version;
2330: for ($version=1;$version<=$returnhash{'version'};$version++) {
2331: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
2332: $returnhash{$item}=$returnhash{$version.':'.$item};
2333: }
2334: }
2335: }
2336: return %returnhash;
2337: }
2338:
2339: # ----------------------------------construct domainconfig user for a domain
2340: sub get_domainconfiguser {
2341: my ($udom) = @_;
2342: return $udom.'-domainconfig';
2343: }
2344:
2345: sub retrieve_inst_usertypes {
2346: my ($udom) = @_;
2347: my (%returnhash,@order);
2348: my %domdefs = &get_domain_defaults($udom);
2349: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
2350: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
2351: return ($domdefs{'inststatustypes'},$domdefs{'inststatusorder'});
2352: } else {
2353: if (defined(&domain($udom,'primary'))) {
2354: my $uhome=&domain($udom,'primary');
2355: my $rep=&reply("inst_usertypes:$udom",$uhome);
2356: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
2357: &logthis("retrieve_inst_usertypes failed - $rep returned from $uhome in domain: $udom");
2358: return (\%returnhash,\@order);
2359: }
2360: my ($hashitems,$orderitems) = split(/:/,$rep);
2361: my @pairs=split(/\&/,$hashitems);
2362: foreach my $item (@pairs) {
2363: my ($key,$value)=split(/=/,$item,2);
2364: $key = &unescape($key);
2365: next if ($key =~ /^error: 2 /);
2366: $returnhash{$key}=&thaw_unescape($value);
2367: }
2368: my @esc_order = split(/\&/,$orderitems);
2369: foreach my $item (@esc_order) {
2370: push(@order,&unescape($item));
2371: }
2372: } else {
2373: &logthis("retrieve_inst_usertypes failed - no primary domain server for $udom");
2374: }
2375: return (\%returnhash,\@order);
2376: }
2377: }
2378:
2379: sub is_domainimage {
2380: my ($url) = @_;
2381: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo|login)/+[^/]-) {
2382: if (&domain($1) ne '') {
2383: return '1';
2384: }
2385: }
2386: return;
2387: }
2388:
2389: sub inst_directory_query {
2390: my ($srch) = @_;
2391: my $udom = $srch->{'srchdomain'};
2392: my %results;
2393: my $homeserver = &domain($udom,'primary');
2394: my $outcome;
2395: if ($homeserver ne '') {
2396: unless ($homeserver eq $perlvar{'lonHostID'}) {
2397: if ($srch->{'srchby'} eq 'email') {
2398: my $lcrev = &get_server_loncaparev($udom,$homeserver);
2399: my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
2400: if (($major eq '' && $minor eq '') || ($major < 2) ||
2401: (($major == 2) && ($minor < 12))) {
2402: return;
2403: }
2404: }
2405: }
2406: my $queryid=&reply("querysend:instdirsearch:".
2407: &escape($srch->{'srchby'}).':'.
2408: &escape($srch->{'srchterm'}).':'.
2409: &escape($srch->{'srchtype'}),$homeserver);
2410: my $host=&hostname($homeserver);
2411: if ($queryid !~/^\Q$host\E\_/) {
2412: &logthis('institutional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.' in domain '.$udom);
2413: return;
2414: }
2415: my $response = &get_query_reply($queryid);
2416: my $maxtries = 5;
2417: my $tries = 1;
2418: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2419: $response = &get_query_reply($queryid);
2420: $tries ++;
2421: }
2422:
2423: if (!&error($response) && $response ne 'refused') {
2424: if ($response eq 'unavailable') {
2425: $outcome = $response;
2426: } else {
2427: $outcome = 'ok';
2428: my @matches = split(/\n/,$response);
2429: foreach my $match (@matches) {
2430: my ($key,$value) = split(/=/,$match);
2431: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
2432: }
2433: }
2434: }
2435: }
2436: return ($outcome,%results);
2437: }
2438:
2439: sub usersearch {
2440: my ($srch) = @_;
2441: my $dom = $srch->{'srchdomain'};
2442: my %results;
2443: my %libserv = &all_library();
2444: my $query = 'usersearch';
2445: foreach my $tryserver (keys(%libserv)) {
2446: if (&host_domain($tryserver) eq $dom) {
2447: unless ($tryserver eq $perlvar{'lonHostID'}) {
2448: if ($srch->{'srchby'} eq 'email') {
2449: my $lcrev = &get_server_loncaparev($dom,$tryserver);
2450: my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
2451: next if (($major eq '' && $minor eq '') || ($major < 2) ||
2452: (($major == 2) && ($minor < 12)));
2453: }
2454: }
2455: my $host=&hostname($tryserver);
2456: my $queryid=
2457: &reply("querysend:".&escape($query).':'.
2458: &escape($srch->{'srchby'}).':'.
2459: &escape($srch->{'srchtype'}).':'.
2460: &escape($srch->{'srchterm'}),$tryserver);
2461: if ($queryid !~/^\Q$host\E\_/) {
2462: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
2463: next;
2464: }
2465: my $reply = &get_query_reply($queryid);
2466: my $maxtries = 1;
2467: my $tries = 1;
2468: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
2469: $reply = &get_query_reply($queryid);
2470: $tries ++;
2471: }
2472: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
2473: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
2474: } else {
2475: my @matches;
2476: if ($reply =~ /\n/) {
2477: @matches = split(/\n/,$reply);
2478: } else {
2479: @matches = split(/\&/,$reply);
2480: }
2481: foreach my $match (@matches) {
2482: my ($uname,$udom,%userhash);
2483: foreach my $entry (split(/:/,$match)) {
2484: my ($key,$value) =
2485: map {&unescape($_);} split(/=/,$entry);
2486: $userhash{$key} = $value;
2487: if ($key eq 'username') {
2488: $uname = $value;
2489: } elsif ($key eq 'domain') {
2490: $udom = $value;
2491: }
2492: }
2493: $results{$uname.':'.$udom} = \%userhash;
2494: }
2495: }
2496: }
2497: }
2498: return %results;
2499: }
2500:
2501: sub get_instuser {
2502: my ($udom,$uname,$id) = @_;
2503: my $homeserver = &domain($udom,'primary');
2504: my ($outcome,%results);
2505: if ($homeserver ne '') {
2506: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
2507: &escape($id).':'.&escape($udom),$homeserver);
2508: my $host=&hostname($homeserver);
2509: if ($queryid !~/^\Q$host\E\_/) {
2510: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
2511: return;
2512: }
2513: my $response = &get_query_reply($queryid);
2514: my $maxtries = 5;
2515: my $tries = 1;
2516: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2517: $response = &get_query_reply($queryid);
2518: $tries ++;
2519: }
2520: if (!&error($response) && $response ne 'refused') {
2521: if ($response eq 'unavailable') {
2522: $outcome = $response;
2523: } else {
2524: $outcome = 'ok';
2525: my @matches = split(/\n/,$response);
2526: foreach my $match (@matches) {
2527: my ($key,$value) = split(/=/,$match);
2528: $results{&unescape($key)} = &thaw_unescape($value);
2529: }
2530: }
2531: }
2532: }
2533: my %userinfo;
2534: if (ref($results{$uname}) eq 'HASH') {
2535: %userinfo = %{$results{$uname}};
2536: }
2537: return ($outcome,%userinfo);
2538: }
2539:
2540: sub get_multiple_instusers {
2541: my ($udom,$users,$caller) = @_;
2542: my ($outcome,$results);
2543: if (ref($users) eq 'HASH') {
2544: my $count = keys(%{$users});
2545: my $requested = &freeze_escape($users);
2546: my $homeserver = &domain($udom,'primary');
2547: if ($homeserver ne '') {
2548: my $queryid=&reply('querysend:getmultinstusers:::'.$caller.'='.$requested,$homeserver);
2549: my $host=&hostname($homeserver);
2550: if ($queryid !~/^\Q$host\E\_/) {
2551: &logthis('get_multiple_instusers invalid queryid: '.$queryid.
2552: ' for host: '.$homeserver.'in domain '.$udom);
2553: return ($outcome,$results);
2554: }
2555: my $response = &get_query_reply($queryid);
2556: my $maxtries = 5;
2557: if ($count > 100) {
2558: $maxtries = 1+int($count/20);
2559: }
2560: my $tries = 1;
2561: while (($response=~/^timeout/) && ($tries <= $maxtries)) {
2562: $response = &get_query_reply($queryid);
2563: $tries ++;
2564: }
2565: if ($response eq '') {
2566: $results = {};
2567: foreach my $key (keys(%{$users})) {
2568: my ($uname,$id);
2569: if ($caller eq 'id') {
2570: $id = $key;
2571: } else {
2572: $uname = $key;
2573: }
2574: my ($resp,%info) = &get_instuser($udom,$uname,$id);
2575: $outcome = $resp;
2576: if ($resp eq 'ok') {
2577: %{$results} = (%{$results}, %info);
2578: } else {
2579: last;
2580: }
2581: }
2582: } elsif(!&error($response) && ($response ne 'refused')) {
2583: if (($response eq 'unavailable') || ($response eq 'invalid') || ($response eq 'timeout')) {
2584: $outcome = $response;
2585: } else {
2586: ($outcome,my $userdata) = split(/=/,$response,2);
2587: if ($outcome eq 'ok') {
2588: $results = &thaw_unescape($userdata);
2589: }
2590: }
2591: }
2592: }
2593: }
2594: return ($outcome,$results);
2595: }
2596:
2597: sub inst_rulecheck {
2598: my ($udom,$uname,$id,$item,$rules) = @_;
2599: my %returnhash;
2600: if ($udom ne '') {
2601: if (ref($rules) eq 'ARRAY') {
2602: @{$rules} = map {&escape($_);} (@{$rules});
2603: my $rulestr = join(':',@{$rules});
2604: my $homeserver=&domain($udom,'primary');
2605: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2606: my $response;
2607: if ($item eq 'username') {
2608: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
2609: ':'.&escape($uname).':'.$rulestr,
2610: $homeserver));
2611: } elsif ($item eq 'id') {
2612: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
2613: ':'.&escape($id).':'.$rulestr,
2614: $homeserver));
2615: } elsif ($item eq 'selfcreate') {
2616: $response=&unescape(&reply('instselfcreatecheck:'.
2617: &escape($udom).':'.&escape($uname).
2618: ':'.$rulestr,$homeserver));
2619: } elsif ($item eq 'unamemap') {
2620: $response=&unescape(&reply('instunamemapcheck:'.
2621: &escape($udom).':'.&escape($uname).
2622: ':'.$rulestr,$homeserver));
2623: }
2624: if ($response ne 'refused') {
2625: my @pairs=split(/\&/,$response);
2626: foreach my $item (@pairs) {
2627: my ($key,$value)=split(/=/,$item,2);
2628: $key = &unescape($key);
2629: next if ($key =~ /^error: 2 /);
2630: $returnhash{$key}=&thaw_unescape($value);
2631: }
2632: }
2633: }
2634: }
2635: }
2636: return %returnhash;
2637: }
2638:
2639: sub inst_userrules {
2640: my ($udom,$check) = @_;
2641: my (%ruleshash,@ruleorder);
2642: if ($udom ne '') {
2643: my $homeserver=&domain($udom,'primary');
2644: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2645: my $response;
2646: if ($check eq 'id') {
2647: $response=&reply('instidrules:'.&escape($udom),
2648: $homeserver);
2649: } elsif ($check eq 'email') {
2650: $response=&reply('instemailrules:'.&escape($udom),
2651: $homeserver);
2652: } elsif ($check eq 'unamemap') {
2653: $response=&reply('unamemaprules:'.&escape($udom),
2654: $homeserver);
2655: } else {
2656: $response=&reply('instuserrules:'.&escape($udom),
2657: $homeserver);
2658: }
2659: if (($response ne 'refused') && ($response ne 'error') &&
2660: ($response ne 'unknown_cmd') &&
2661: ($response ne 'no_such_host')) {
2662: my ($hashitems,$orderitems) = split(/:/,$response);
2663: my @pairs=split(/\&/,$hashitems);
2664: foreach my $item (@pairs) {
2665: my ($key,$value)=split(/=/,$item,2);
2666: $key = &unescape($key);
2667: next if ($key =~ /^error: 2 /);
2668: $ruleshash{$key}=&thaw_unescape($value);
2669: }
2670: my @esc_order = split(/\&/,$orderitems);
2671: foreach my $item (@esc_order) {
2672: push(@ruleorder,&unescape($item));
2673: }
2674: }
2675: }
2676: }
2677: return (\%ruleshash,\@ruleorder);
2678: }
2679:
2680: # ------------- Get Authentication, Language and User Tools Defaults for Domain
2681:
2682: sub get_domain_defaults {
2683: my ($domain,$ignore_cache) = @_;
2684: return if (($domain eq '') || ($domain eq 'public'));
2685: my $cachetime = 60*60*24;
2686: unless ($ignore_cache) {
2687: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
2688: if (defined($cached)) {
2689: if (ref($result) eq 'HASH') {
2690: return %{$result};
2691: }
2692: }
2693: }
2694: my %domdefaults;
2695: my %domconfig =
2696: &get_dom('configuration',['defaults','quotas',
2697: 'requestcourses','inststatus',
2698: 'coursedefaults','usersessions',
2699: 'requestauthor','selfenrollment',
2700: 'coursecategories','ssl','autoenroll',
2701: 'trust','helpsettings','wafproxy',
2702: 'ltisec','toolsec','domexttool',
2703: 'exttool',],$domain);
2704: my @coursetypes = ('official','unofficial','community','textbook','placement');
2705: if (ref($domconfig{'defaults'}) eq 'HASH') {
2706: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
2707: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
2708: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
2709: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
2710: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
2711: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
2712: $domdefaults{'portal_def_email'} = $domconfig{'defaults'}{'portal_def_email'};
2713: $domdefaults{'portal_def_web'} = $domconfig{'defaults'}{'portal_def_web'};
2714: $domdefaults{'intauth_cost'} = $domconfig{'defaults'}{'intauth_cost'};
2715: $domdefaults{'intauth_switch'} = $domconfig{'defaults'}{'intauth_switch'};
2716: $domdefaults{'intauth_check'} = $domconfig{'defaults'}{'intauth_check'};
2717: $domdefaults{'unamemap_rule'} = $domconfig{'defaults'}{'unamemap_rule'};
2718: } else {
2719: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
2720: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
2721: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
2722: }
2723: if (ref($domconfig{'quotas'}) eq 'HASH') {
2724: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
2725: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
2726: } else {
2727: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
2728: }
2729: my @usertools = ('aboutme','blog','webdav','portfolio');
2730: foreach my $item (@usertools) {
2731: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
2732: $domdefaults{$item} = $domconfig{'quotas'}{$item};
2733: }
2734: }
2735: if (ref($domconfig{'quotas'}{'authorquota'}) eq 'HASH') {
2736: $domdefaults{'authorquota'} = $domconfig{'quotas'}{'authorquota'};
2737: }
2738: }
2739: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
2740: foreach my $item ('official','unofficial','community','textbook','placement') {
2741: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
2742: }
2743: }
2744: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
2745: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
2746: }
2747: if (ref($domconfig{'inststatus'}) eq 'HASH') {
2748: foreach my $item ('inststatustypes','inststatusorder','inststatusguest') {
2749: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2750: }
2751: }
2752: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2753: $domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
2754: $domdefaults{'usejsme'} = $domconfig{'coursedefaults'}{'usejsme'};
2755: $domdefaults{'inline_chem'} = $domconfig{'coursedefaults'}{'inline_chem'};
2756: $domdefaults{'uselcmath'} = $domconfig{'coursedefaults'}{'uselcmath'};
2757: if (ref($domconfig{'coursedefaults'}{'postsubmit'}) eq 'HASH') {
2758: $domdefaults{'postsubmit'} = $domconfig{'coursedefaults'}{'postsubmit'}{'client'};
2759: }
2760: foreach my $type (@coursetypes) {
2761: if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
2762: unless ($type eq 'community') {
2763: $domdefaults{$type.'credits'} = $domconfig{'coursedefaults'}{'coursecredits'}{$type};
2764: }
2765: }
2766: if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
2767: $domdefaults{$type.'quota'} = $domconfig{'coursedefaults'}{'uploadquota'}{$type};
2768: }
2769: if ($domdefaults{'postsubmit'} eq 'on') {
2770: if (ref($domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}) eq 'HASH') {
2771: $domdefaults{$type.'postsubtimeout'} =
2772: $domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}{$type};
2773: }
2774: }
2775: if (ref($domconfig{'coursedefaults'}{'domexttool'}) eq 'HASH') {
2776: $domdefaults{$type.'domexttool'} = $domconfig{'coursedefaults'}{'domexttool'}{$type};
2777: } else {
2778: $domdefaults{$type.'domexttool'} = 1;
2779: }
2780: if (ref($domconfig{'coursedefaults'}{'exttool'}) eq 'HASH') {
2781: $domdefaults{$type.'exttool'} = $domconfig{'coursedefaults'}{'exttool'}{$type};
2782: } else {
2783: $domdefaults{$type.'exttool'} = 0;
2784: }
2785: }
2786: if (ref($domconfig{'coursedefaults'}{'canclone'}) eq 'HASH') {
2787: if (ref($domconfig{'coursedefaults'}{'canclone'}{'instcode'}) eq 'ARRAY') {
2788: my @clonecodes = @{$domconfig{'coursedefaults'}{'canclone'}{'instcode'}};
2789: if (@clonecodes) {
2790: $domdefaults{'canclone'} = join('+',@clonecodes);
2791: }
2792: }
2793: } elsif ($domconfig{'coursedefaults'}{'canclone'}) {
2794: $domdefaults{'canclone'}=$domconfig{'coursedefaults'}{'canclone'};
2795: }
2796: if ($domconfig{'coursedefaults'}{'texengine'}) {
2797: $domdefaults{'texengine'} = $domconfig{'coursedefaults'}{'texengine'};
2798: }
2799: if (exists($domconfig{'coursedefaults'}{'ltiauth'})) {
2800: $domdefaults{'crsltiauth'} = $domconfig{'coursedefaults'}{'ltiauth'};
2801: }
2802: }
2803: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2804: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2805: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2806: }
2807: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2808: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2809: }
2810: if (ref($domconfig{'usersessions'}{'offloadnow'}) eq 'HASH') {
2811: $domdefaults{'offloadnow'} = $domconfig{'usersessions'}{'offloadnow'};
2812: }
2813: if (ref($domconfig{'usersessions'}{'offloadoth'}) eq 'HASH') {
2814: $domdefaults{'offloadoth'} = $domconfig{'usersessions'}{'offloadoth'};
2815: }
2816: }
2817: if (ref($domconfig{'selfenrollment'}) eq 'HASH') {
2818: if (ref($domconfig{'selfenrollment'}{'admin'}) eq 'HASH') {
2819: my @settings = ('types','registered','enroll_dates','access_dates','section',
2820: 'approval','limit');
2821: foreach my $type (@coursetypes) {
2822: if (ref($domconfig{'selfenrollment'}{'admin'}{$type}) eq 'HASH') {
2823: my @mgrdc = ();
2824: foreach my $item (@settings) {
2825: if ($domconfig{'selfenrollment'}{'admin'}{$type}{$item} eq '0') {
2826: push(@mgrdc,$item);
2827: }
2828: }
2829: if (@mgrdc) {
2830: $domdefaults{$type.'selfenrolladmdc'} = join(',',@mgrdc);
2831: }
2832: }
2833: }
2834: }
2835: if (ref($domconfig{'selfenrollment'}{'default'}) eq 'HASH') {
2836: foreach my $type (@coursetypes) {
2837: if (ref($domconfig{'selfenrollment'}{'default'}{$type}) eq 'HASH') {
2838: foreach my $item (keys(%{$domconfig{'selfenrollment'}{'default'}{$type}})) {
2839: $domdefaults{$type.'selfenroll'.$item} = $domconfig{'selfenrollment'}{'default'}{$type}{$item};
2840: }
2841: }
2842: }
2843: }
2844: }
2845: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
2846: $domdefaults{'catauth'} = 'std';
2847: $domdefaults{'catunauth'} = 'std';
2848: if ($domconfig{'coursecategories'}{'auth'}) {
2849: $domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};
2850: }
2851: if ($domconfig{'coursecategories'}{'unauth'}) {
2852: $domdefaults{'catunauth'} = $domconfig{'coursecategories'}{'unauth'};
2853: }
2854: }
2855: if (ref($domconfig{'ssl'}) eq 'HASH') {
2856: if (ref($domconfig{'ssl'}{'replication'}) eq 'HASH') {
2857: $domdefaults{'replication'} = $domconfig{'ssl'}{'replication'};
2858: }
2859: if (ref($domconfig{'ssl'}{'connto'}) eq 'HASH') {
2860: $domdefaults{'connect'} = $domconfig{'ssl'}{'connto'};
2861: }
2862: if (ref($domconfig{'ssl'}{'connfrom'}) eq 'HASH') {
2863: $domdefaults{'connect'} = $domconfig{'ssl'}{'connfrom'};
2864: }
2865: }
2866: if (ref($domconfig{'trust'}) eq 'HASH') {
2867: my @prefixes = qw(content shared enroll othcoau coaurem domroles catalog reqcrs msg);
2868: foreach my $prefix (@prefixes) {
2869: if (ref($domconfig{'trust'}{$prefix}) eq 'HASH') {
2870: $domdefaults{'trust'.$prefix} = $domconfig{'trust'}{$prefix};
2871: }
2872: }
2873: }
2874: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
2875: $domdefaults{'autofailsafe'} = $domconfig{'autoenroll'}{'autofailsafe'};
2876: $domdefaults{'failsafe'} = $domconfig{'autoenroll'}{'failsafe'};
2877: }
2878: if (ref($domconfig{'helpsettings'}) eq 'HASH') {
2879: $domdefaults{'submitbugs'} = $domconfig{'helpsettings'}{'submitbugs'};
2880: if (ref($domconfig{'helpsettings'}{'adhoc'}) eq 'HASH') {
2881: $domdefaults{'adhocroles'} = $domconfig{'helpsettings'}{'adhoc'};
2882: }
2883: }
2884: if (ref($domconfig{'wafproxy'}) eq 'HASH') {
2885: foreach my $item ('ipheader','trusted','vpnint','vpnext','sslopt') {
2886: if ($domconfig{'wafproxy'}{$item}) {
2887: $domdefaults{'waf_'.$item} = $domconfig{'wafproxy'}{$item};
2888: }
2889: }
2890: }
2891: if (ref($domconfig{'ltisec'}) eq 'HASH') {
2892: if (ref($domconfig{'ltisec'}{'encrypt'}) eq 'HASH') {
2893: $domdefaults{'linkprotenc_crs'} = $domconfig{'ltisec'}{'encrypt'}{'crs'};
2894: $domdefaults{'linkprotenc_dom'} = $domconfig{'ltisec'}{'encrypt'}{'dom'};
2895: $domdefaults{'ltienc_consumers'} = $domconfig{'ltisec'}{'encrypt'}{'consumers'};
2896: }
2897: if (ref($domconfig{'ltisec'}{'private'}) eq 'HASH') {
2898: if (ref($domconfig{'ltisec'}{'private'}{'keys'}) eq 'ARRAY') {
2899: $domdefaults{'ltiprivhosts'} = $domconfig{'ltisec'}{'private'}{'keys'};
2900: }
2901: }
2902: }
2903: if (ref($domconfig{'toolsec'}) eq 'HASH') {
2904: if (ref($domconfig{'toolsec'}{'encrypt'}) eq 'HASH') {
2905: $domdefaults{'toolenc_crs'} = $domconfig{'toolsec'}{'encrypt'}{'crs'};
2906: $domdefaults{'toolenc_dom'} = $domconfig{'toolsec'}{'encrypt'}{'dom'};
2907: }
2908: if (ref($domconfig{'toolsec'}{'private'}) eq 'HASH') {
2909: if (ref($domconfig{'toolsec'}{'private'}{'keys'}) eq 'ARRAY') {
2910: $domdefaults{'toolprivhosts'} = $domconfig{'toolsec'}{'private'}{'keys'};
2911: }
2912: }
2913: }
2914: &do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
2915: return %domdefaults;
2916: }
2917:
2918: sub get_dom_cats {
2919: my ($dom) = @_;
2920: return unless (&domain($dom));
2921: my ($cats,$cached)=&is_cached_new('cats',$dom);
2922: unless (defined($cached)) {
2923: my %domconfig = &get_dom('configuration',['coursecategories'],$dom);
2924: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
2925: if (ref($domconfig{'coursecategories'}{'cats'}) eq 'HASH') {
2926: %{$cats} = %{$domconfig{'coursecategories'}{'cats'}};
2927: } else {
2928: $cats = {};
2929: }
2930: } else {
2931: $cats = {};
2932: }
2933: &do_cache_new('cats',$dom,$cats,3600);
2934: }
2935: return $cats;
2936: }
2937:
2938: sub get_dom_instcats {
2939: my ($dom) = @_;
2940: return unless (&domain($dom));
2941: my ($instcats,$cached)=&is_cached_new('instcats',$dom);
2942: unless (defined($cached)) {
2943: my (%coursecodes,%codes,@codetitles,%cat_titles,%cat_order);
2944: my $totcodes = &retrieve_instcodes(\%coursecodes,$dom);
2945: if ($totcodes > 0) {
2946: my $caller = 'global';
2947: if (&auto_instcode_format($caller,$dom,\%coursecodes,\%codes,
2948: \@codetitles,\%cat_titles,\%cat_order) eq 'ok') {
2949: $instcats = {
2950: totcodes => $totcodes,
2951: codes => \%codes,
2952: codetitles => \@codetitles,
2953: cat_titles => \%cat_titles,
2954: cat_order => \%cat_order,
2955: };
2956: &do_cache_new('instcats',$dom,$instcats,3600);
2957: }
2958: }
2959: }
2960: return $instcats;
2961: }
2962:
2963: sub retrieve_instcodes {
2964: my ($coursecodes,$dom) = @_;
2965: my $totcodes;
2966: my %courses = &courseiddump($dom,'.',1,'.','.','.',undef,undef,'Course');
2967: foreach my $course (keys(%courses)) {
2968: if (ref($courses{$course}) eq 'HASH') {
2969: if ($courses{$course}{'inst_code'} ne '') {
2970: $$coursecodes{$course} = $courses{$course}{'inst_code'};
2971: $totcodes ++;
2972: }
2973: }
2974: }
2975: return $totcodes;
2976: }
2977:
2978: sub course_portal_url {
2979: my ($cnum,$cdom,$r) = @_;
2980: my $chome = &homeserver($cnum,$cdom);
2981: my $hostname = &hostname($chome);
2982: my $protocol = $protocol{$chome};
2983: $protocol = 'http' if ($protocol ne 'https');
2984: my %domdefaults = &get_domain_defaults($cdom);
2985: my $firsturl;
2986: if ($domdefaults{'portal_def'}) {
2987: $firsturl = $domdefaults{'portal_def'};
2988: } else {
2989: my $alias = &use_proxy_alias($r,$chome);
2990: $hostname = $alias if ($alias ne '');
2991: $firsturl = $protocol.'://'.$hostname;
2992: }
2993: return $firsturl;
2994: }
2995:
2996: sub url_prefix {
2997: my ($r,$dom,$home,$context) = @_;
2998: my $prefix;
2999: my %domdefs = &get_domain_defaults($dom);
3000: if ($domdefs{'portal_def'} && $domdefs{'portal_def_'.$context}) {
3001: if ($domdefs{'portal_def'} =~ m{^(https?://[^/]+)}) {
3002: $prefix = $1;
3003: }
3004: }
3005: if ($prefix eq '') {
3006: my $hostname = &hostname($home);
3007: my $protocol = $protocol{$home};
3008: $protocol = 'http' if ($protocol{$home} ne 'https');
3009: my $alias = &use_proxy_alias($r,$home);
3010: $hostname = $alias if ($alias ne '');
3011: $prefix = $protocol.'://'.$hostname;
3012: }
3013: return $prefix;
3014: }
3015:
3016: # --------------------------------------------- Get domain config for passwords
3017:
3018: sub get_passwdconf {
3019: my ($dom) = @_;
3020: my (%passwdconf,$gotconf,$lookup);
3021: my ($result,$cached)=&is_cached_new('passwdconf',$dom);
3022: if (defined($cached)) {
3023: if (ref($result) eq 'HASH') {
3024: %passwdconf = %{$result};
3025: $gotconf = 1;
3026: }
3027: }
3028: unless ($gotconf) {
3029: my %domconfig = &get_dom('configuration',['passwords'],$dom);
3030: if (ref($domconfig{'passwords'}) eq 'HASH') {
3031: %passwdconf = %{$domconfig{'passwords'}};
3032: }
3033: my $cachetime = 24*60*60;
3034: &do_cache_new('passwdconf',$dom,\%passwdconf,$cachetime);
3035: }
3036: return %passwdconf;
3037: }
3038:
3039: # --------------------------------------------------- Assign a key to a student
3040:
3041: sub assign_access_key {
3042: #
3043: # a valid key looks like uname:udom#comments
3044: # comments are being appended
3045: #
3046: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
3047: $kdom=
3048: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
3049: $knum=
3050: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
3051: $cdom=
3052: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
3053: $cnum=
3054: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
3055: $udom=$env{'user.name'} unless (defined($udom));
3056: $uname=$env{'user.domain'} unless (defined($uname));
3057: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
3058: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
3059: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
3060: # assigned to this person
3061: # - this should not happen,
3062: # unless something went wrong
3063: # the first time around
3064: # ready to assign
3065: $logentry=$1.'; '.$logentry;
3066: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
3067: $kdom,$knum) eq 'ok') {
3068: # key now belongs to user
3069: my $envkey='key.'.$cdom.'_'.$cnum;
3070: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
3071: &appenv({'environment.'.$envkey => $ckey});
3072: return 'ok';
3073: } else {
3074: return
3075: 'error: Count not permanently assign key, will need to be re-entered later.';
3076: }
3077: } else {
3078: return 'error: Could not assign key, try again later.';
3079: }
3080: } elsif (!$existing{$ckey}) {
3081: # the key does not exist
3082: return 'error: The key does not exist';
3083: } else {
3084: # the key is somebody else's
3085: return 'error: The key is already in use';
3086: }
3087: }
3088:
3089: # ------------------------------------------ put an additional comment on a key
3090:
3091: sub comment_access_key {
3092: #
3093: # a valid key looks like uname:udom#comments
3094: # comments are being appended
3095: #
3096: my ($ckey,$cdom,$cnum,$logentry)=@_;
3097: $cdom=
3098: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
3099: $cnum=
3100: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
3101: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
3102: if ($existing{$ckey}) {
3103: $existing{$ckey}.='; '.$logentry;
3104: # ready to assign
3105: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
3106: $cdom,$cnum) eq 'ok') {
3107: return 'ok';
3108: } else {
3109: return 'error: Count not store comment.';
3110: }
3111: } else {
3112: # the key does not exist
3113: return 'error: The key does not exist';
3114: }
3115: }
3116:
3117: # ------------------------------------------------------ Generate a set of keys
3118:
3119: sub generate_access_keys {
3120: my ($number,$cdom,$cnum,$logentry)=@_;
3121: $cdom=
3122: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
3123: $cnum=
3124: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
3125: unless (&allowed('mky',$cdom)) { return 0; }
3126: unless (($cdom) && ($cnum)) { return 0; }
3127: if ($number>10000) { return 0; }
3128: sleep(2); # make sure don't get same seed twice
3129: srand(time()^($$+($$<<15))); # from "Programming Perl"
3130: my $total=0;
3131: for (my $i=1;$i<=$number;$i++) {
3132: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
3133: sprintf("%lx",int(100000*rand)).'-'.
3134: sprintf("%lx",int(100000*rand));
3135: $newkey=~s/1/g/g; # folks mix up 1 and l
3136: $newkey=~s/0/h/g; # and also 0 and O
3137: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
3138: if ($existing{$newkey}) {
3139: $i--;
3140: } else {
3141: if (&put('accesskeys',
3142: { $newkey => '# generated '.localtime().
3143: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
3144: '; '.$logentry },
3145: $cdom,$cnum) eq 'ok') {
3146: $total++;
3147: }
3148: }
3149: }
3150: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
3151: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
3152: return $total;
3153: }
3154:
3155: # ------------------------------------------------------- Validate an accesskey
3156:
3157: sub validate_access_key {
3158: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
3159: $cdom=
3160: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
3161: $cnum=
3162: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
3163: $udom=$env{'user.domain'} unless (defined($udom));
3164: $uname=$env{'user.name'} unless (defined($uname));
3165: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
3166: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
3167: }
3168:
3169: # ------------------------------------- Find the section of student in a course
3170: sub devalidate_getsection_cache {
3171: my ($udom,$unam,$courseid)=@_;
3172: my $hashid="$udom:$unam:$courseid";
3173: &devalidate_cache_new('getsection',$hashid);
3174: }
3175:
3176: sub courseid_to_courseurl {
3177: my ($courseid) = @_;
3178: #already url style courseid
3179: return $courseid if ($courseid =~ m{^/});
3180:
3181: if (exists($env{'course.'.$courseid.'.num'})) {
3182: my $cnum = $env{'course.'.$courseid.'.num'};
3183: my $cdom = $env{'course.'.$courseid.'.domain'};
3184: return "/$cdom/$cnum";
3185: }
3186:
3187: my %courseinfo=&coursedescription($courseid);
3188: if (exists($courseinfo{'num'})) {
3189: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
3190: }
3191:
3192: return undef;
3193: }
3194:
3195: sub getsection {
3196: my ($udom,$unam,$courseid)=@_;
3197: my $cachetime=1800;
3198:
3199: my $hashid="$udom:$unam:$courseid";
3200: my ($result,$cached)=&is_cached_new('getsection',$hashid);
3201: if (defined($cached)) { return $result; }
3202:
3203: my %Pending;
3204: my %Expired;
3205: #
3206: # Each role can either have not started yet (pending), be active,
3207: # or have expired.
3208: #
3209: # If there is an active role, we are done.
3210: #
3211: # If there is more than one role which has not started yet,
3212: # choose the one which will start sooner
3213: # If there is one role which has not started yet, return it.
3214: #
3215: # If there is more than one expired role, choose the one which ended last.
3216: # If there is a role which has expired, return it.
3217: #
3218: $courseid = &courseid_to_courseurl($courseid);
3219: my %roleshash = &dump('roles',$udom,$unam,$courseid);
3220: foreach my $key (keys(%roleshash)) {
3221: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
3222: my $section=$1;
3223: if ($key eq $courseid.'_st') { $section=''; }
3224: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
3225: my $now=time;
3226: if (defined($end) && $end && ($now > $end)) {
3227: $Expired{$end}=$section;
3228: next;
3229: }
3230: if (defined($start) && $start && ($now < $start)) {
3231: $Pending{$start}=$section;
3232: next;
3233: }
3234: return &do_cache_new('getsection',$hashid,$section,$cachetime);
3235: }
3236: #
3237: # Presumedly there will be few matching roles from the above
3238: # loop and the sorting time will be negligible.
3239: if (scalar(keys(%Pending))) {
3240: my ($time) = sort {$a <=> $b} keys(%Pending);
3241: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
3242: }
3243: if (scalar(keys(%Expired))) {
3244: my @sorted = sort {$a <=> $b} keys(%Expired);
3245: my $time = pop(@sorted);
3246: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
3247: }
3248: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
3249: }
3250:
3251: sub save_cache {
3252: &purge_remembered();
3253: #&Apache::loncommon::validate_page();
3254: undef(%env);
3255: undef($env_loaded);
3256: }
3257:
3258: my $to_remember=-1;
3259: my %remembered;
3260: my %accessed;
3261: my $kicks=0;
3262: my $hits=0;
3263: sub make_key {
3264: my ($name,$id) = @_;
3265: if (length($id) > 65
3266: && length(&escape($id)) > 200) {
3267: $id=length($id).':'.&Digest::MD5::md5_hex($id);
3268: }
3269: return &escape($name.':'.$id);
3270: }
3271:
3272: sub devalidate_cache_new {
3273: my ($name,$id,$debug) = @_;
3274: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
3275: my $remembered_id=$name.':'.$id;
3276: $id=&make_key($name,$id);
3277: $memcache->delete($id);
3278: delete($remembered{$remembered_id});
3279: delete($accessed{$remembered_id});
3280: }
3281:
3282: sub is_cached_new {
3283: my ($name,$id,$debug) = @_;
3284: my $remembered_id=$name.':'.$id; # this is to avoid make_key (which is slow) whenever possible
3285: if (exists($remembered{$remembered_id})) {
3286: if ($debug) { &Apache::lonnet::logthis("Early return $remembered_id of $remembered{$remembered_id} "); }
3287: $accessed{$remembered_id}=[&gettimeofday()];
3288: $hits++;
3289: return ($remembered{$remembered_id},1);
3290: }
3291: $id=&make_key($name,$id);
3292: my $value = $memcache->get($id);
3293: if (!(defined($value))) {
3294: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
3295: return (undef,undef);
3296: }
3297: if ($value eq '__undef__') {
3298: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
3299: $value=undef;
3300: }
3301: &make_room($remembered_id,$value,$debug);
3302: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
3303: return ($value,1);
3304: }
3305:
3306: sub do_cache_new {
3307: my ($name,$id,$value,$time,$debug) = @_;
3308: my $remembered_id=$name.':'.$id;
3309: $id=&make_key($name,$id);
3310: my $setvalue=$value;
3311: if (!defined($setvalue)) {
3312: $setvalue='__undef__';
3313: }
3314: if (!defined($time) ) {
3315: $time=600;
3316: }
3317: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
3318: my $result = $memcache->set($id,$setvalue,$time);
3319: if (! $result) {
3320: &logthis("caching of id -> $id failed");
3321: $memcache->disconnect_all();
3322: }
3323: # need to make a copy of $value
3324: &make_room($remembered_id,$value,$debug);
3325: return $value;
3326: }
3327:
3328: sub make_room {
3329: my ($remembered_id,$value,$debug)=@_;
3330:
3331: $remembered{$remembered_id}= (ref($value)) ? &Storable::dclone($value)
3332: : $value;
3333: if ($to_remember<0) { return; }
3334: $accessed{$remembered_id}=[&gettimeofday()];
3335: if (scalar(keys(%remembered)) <= $to_remember) { return; }
3336: my $to_kick;
3337: my $max_time=0;
3338: foreach my $other (keys(%accessed)) {
3339: if (&tv_interval($accessed{$other}) > $max_time) {
3340: $to_kick=$other;
3341: $max_time=&tv_interval($accessed{$other});
3342: }
3343: }
3344: delete($remembered{$to_kick});
3345: delete($accessed{$to_kick});
3346: $kicks++;
3347: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
3348: return;
3349: }
3350:
3351: sub purge_remembered {
3352: #&logthis("Tossing ".scalar(keys(%remembered)));
3353: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
3354: undef(%remembered);
3355: undef(%accessed);
3356: }
3357: # ------------------------------------- Read an entry from a user's environment
3358:
3359: sub userenvironment {
3360: my ($udom,$unam,@what)=@_;
3361: my $items;
3362: foreach my $item (@what) {
3363: $items.=&escape($item).'&';
3364: }
3365: $items=~s/\&$//;
3366: my %returnhash=();
3367: my $uhome = &homeserver($unam,$udom);
3368: unless ($uhome eq 'no_host') {
3369: my @answer=split(/\&/,
3370: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
3371: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
3372: return %returnhash;
3373: }
3374: my $i;
3375: for ($i=0;$i<=$#what;$i++) {
3376: $returnhash{$what[$i]}=&unescape($answer[$i]);
3377: }
3378: }
3379: return %returnhash;
3380: }
3381:
3382: # ---------------------------------------------------------- Get a studentphoto
3383: sub studentphoto {
3384: my ($udom,$unam,$ext) = @_;
3385: my $home=&homeserver($unam,$udom);
3386: if (defined($env{'request.course.id'})) {
3387: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
3388: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
3389: return(&retrievestudentphoto($udom,$unam,$ext));
3390: } else {
3391: my ($result,$perm_reqd)=
3392: &auto_photo_permission($unam,$udom);
3393: if ($result eq 'ok') {
3394: if (!($perm_reqd eq 'yes')) {
3395: return(&retrievestudentphoto($udom,$unam,$ext));
3396: }
3397: }
3398: }
3399: }
3400: } else {
3401: my ($result,$perm_reqd) =
3402: &auto_photo_permission($unam,$udom);
3403: if ($result eq 'ok') {
3404: if (!($perm_reqd eq 'yes')) {
3405: return(&retrievestudentphoto($udom,$unam,$ext));
3406: }
3407: }
3408: }
3409: return '/adm/lonKaputt/lonlogo_broken.gif';
3410: }
3411:
3412: sub retrievestudentphoto {
3413: my ($udom,$unam,$ext,$type) = @_;
3414: my $home=&homeserver($unam,$udom);
3415: my $ret=&reply("studentphoto:$udom:$unam:$ext:$type",$home);
3416: if ($ret eq 'ok') {
3417: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
3418: if ($type eq 'thumbnail') {
3419: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
3420: }
3421: my $tokenurl=&tokenwrapper($url);
3422: return $tokenurl;
3423: } else {
3424: if ($type eq 'thumbnail') {
3425: return '/adm/lonKaputt/genericstudent_tn.gif';
3426: } else {
3427: return '/adm/lonKaputt/lonlogo_broken.gif';
3428: }
3429: }
3430: }
3431:
3432: # -------------------------------------------------------------------- New chat
3433:
3434: sub chatsend {
3435: my ($newentry,$anon,$group)=@_;
3436: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
3437: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3438: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
3439: &reply('chatsend:'.$cdom.':'.$cnum.':'.
3440: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
3441: &escape($newentry)).':'.$group,$chome);
3442: }
3443:
3444: # ------------------------------------------ Find current version of a resource
3445:
3446: sub getversion {
3447: my $fname=&clutter(shift);
3448: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
3449: return ¤tversion(&filelocation('',$fname));
3450: }
3451:
3452: sub currentversion {
3453: my $fname=shift;
3454: my $author=$fname;
3455: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3456: my ($udom,$uname)=split(/\//,$author);
3457: my $home=&homeserver($uname,$udom);
3458: if ($home eq 'no_host') {
3459: return -1;
3460: }
3461: my $answer=&reply("currentversion:$fname",$home);
3462: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3463: return -1;
3464: }
3465: return $answer;
3466: }
3467:
3468: #
3469: # Return special version number of resource if set by override, empty otherwise
3470: #
3471: sub usedversion {
3472: my $fname=shift;
3473: unless ($fname) { $fname=$env{'request.uri'}; }
3474: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
3475: if ($urlversion) { return $urlversion; }
3476: return '';
3477: }
3478:
3479: # ----------------------------- Subscribe to a resource, return URL if possible
3480:
3481: sub subscribe {
3482: my $fname=shift;
3483: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
3484: $fname=~s/[\n\r]//g;
3485: my $author=$fname;
3486: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3487: my ($udom,$uname)=split(/\//,$author);
3488: my $home=homeserver($uname,$udom);
3489: if ($home eq 'no_host') {
3490: return 'not_found';
3491: }
3492: my $answer=reply("sub:$fname",$home);
3493: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3494: $answer.=' by '.$home;
3495: }
3496: return $answer;
3497: }
3498:
3499: # -------------------------------------------------------------- Replicate file
3500:
3501: sub repcopy {
3502: my $filename=shift;
3503: $filename=~s/\/+/\//g;
3504: my $londocroot = $perlvar{'lonDocRoot'};
3505: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
3506: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
3507: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
3508: $filename=~m{^/*(uploaded|editupload)/}) {
3509: return &repcopy_userfile($filename);
3510: }
3511: $filename=~s/[\n\r]//g;
3512: my $transname="$filename.in.transfer";
3513: # FIXME: this should flock
3514: if ((-e $filename) || (-e $transname)) { return 'ok'; }
3515: my $remoteurl=subscribe($filename);
3516: if ($remoteurl =~ /^con_lost by/) {
3517: &logthis("Subscribe returned $remoteurl: $filename");
3518: return 'unavailable';
3519: } elsif ($remoteurl eq 'not_found') {
3520: #&logthis("Subscribe returned not_found: $filename");
3521: return 'not_found';
3522: } elsif ($remoteurl =~ /^rejected by/) {
3523: &logthis("Subscribe returned $remoteurl: $filename");
3524: return 'forbidden';
3525: } elsif ($remoteurl eq 'directory') {
3526: return 'ok';
3527: } else {
3528: my $author=$filename;
3529: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3530: my ($udom,$uname)=split(/\//,$author);
3531: my $home=homeserver($uname,$udom);
3532: unless ($home eq $perlvar{'lonHostID'}) {
3533: my @parts=split(/\//,$filename);
3534: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
3535: if ($path ne "$londocroot/res") {
3536: &logthis("Malconfiguration for replication: $filename");
3537: return 'bad_request';
3538: }
3539: my $count;
3540: for ($count=5;$count<$#parts;$count++) {
3541: $path.="/$parts[$count]";
3542: if ((-e $path)!=1) {
3543: mkdir($path,0777);
3544: }
3545: }
3546: my $request=new HTTP::Request('GET',"$remoteurl");
3547: my $response;
3548: if ($remoteurl =~ m{/raw/}) {
3549: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',0,1);
3550: } else {
3551: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',1);
3552: }
3553: if ($response->is_error()) {
3554: unlink($transname);
3555: my $message=$response->status_line;
3556: &logthis("<font color=\"blue\">WARNING:"
3557: ." LWP get: $message: $filename</font>");
3558: return 'unavailable';
3559: } else {
3560: if ($remoteurl!~/\.meta$/) {
3561: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
3562: my $mresponse;
3563: if ($remoteurl =~ m{/raw/}) {
3564: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',0,1);
3565: } else {
3566: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',1);
3567: }
3568: if ($mresponse->is_error()) {
3569: unlink($filename.'.meta');
3570: &logthis(
3571: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
3572: }
3573: }
3574: rename($transname,$filename);
3575: return 'ok';
3576: }
3577: }
3578: }
3579: }
3580:
3581: # ------------------------------------------------- Unsubscribe from a resource
3582:
3583: sub unsubscribe {
3584: my ($fname) = @_;
3585: my $answer;
3586: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return $answer; }
3587: $fname=~s/[\n\r]//g;
3588: my $author=$fname;
3589: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3590: my ($udom,$uname)=split(/\//,$author);
3591: my $home=homeserver($uname,$udom);
3592: if ($home eq 'no_host') {
3593: $answer = 'no_host';
3594: } elsif (grep { $_ eq $home } ¤t_machine_ids()) {
3595: $answer = 'home';
3596: } else {
3597: my $defdom = $perlvar{'lonDefDomain'};
3598: if (&will_trust('content',$defdom,$udom)) {
3599: $answer = reply("unsub:$fname",$home);
3600: } else {
3601: $answer = 'untrusted';
3602: }
3603: }
3604: return $answer;
3605: }
3606:
3607: # ------------------------------------------------ Get server side include body
3608: sub ssi_body {
3609: my ($filelink,%form)=@_;
3610: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
3611: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
3612: }
3613: my $output='';
3614: my $response;
3615: if ($filelink=~/^https?\:/) {
3616: ($output,$response)=&externalssi($filelink);
3617: } else {
3618: $filelink .= $filelink=~/\?/ ? '&' : '?';
3619: $filelink .= 'inhibitmenu=yes';
3620: ($output,$response)=&ssi($filelink,%form);
3621: }
3622: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
3623: $output=~s/^.*?\<body[^\>]*\>//si;
3624: $output=~s/\<\/body\s*\>.*?$//si;
3625: if (wantarray) {
3626: return ($output, $response);
3627: } else {
3628: return $output;
3629: }
3630: }
3631:
3632: # --------------------------------------------------------- Server Side Include
3633:
3634: sub absolute_url {
3635: my ($host_name,$unalias,$keep_proto) = @_;
3636: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
3637: if ($host_name eq '') {
3638: $host_name = $ENV{'SERVER_NAME'};
3639: }
3640: if ($unalias) {
3641: my $alias = &get_proxy_alias();
3642: if ($alias eq $host_name) {
3643: my $lonhost = $perlvar{'lonHostID'};
3644: my $hostname = &hostname($lonhost);
3645: my $lcproto;
3646: if (($keep_proto) || ($hostname eq '')) {
3647: $lcproto = $protocol;
3648: } else {
3649: $lcproto = $protocol{$lonhost};
3650: $lcproto = 'http' if ($lcproto ne 'https');
3651: $lcproto .= '://';
3652: }
3653: unless ($hostname eq '') {
3654: return $lcproto.$hostname;
3655: }
3656: }
3657: }
3658: return $protocol.$host_name;
3659: }
3660:
3661: #
3662: # Server side include.
3663: # Parameters:
3664: # fn Possibly encrypted resource name/id.
3665: # form Hash that describes how the rendering should be done
3666: # and other things.
3667: # Returns:
3668: # Scalar context: The content of the response.
3669: # Array context: 2 element list of the content and the full response object.
3670: #
3671: sub ssi {
3672:
3673: my ($fn,%form)=@_;
3674: my ($host,$request,$response);
3675: $host = &absolute_url('',1);
3676:
3677: $form{'no_update_last_known'}=1;
3678: &Apache::lonenc::check_encrypt(\$fn);
3679: if (%form) {
3680: $request=new HTTP::Request('POST',$host.$fn);
3681: $request->content(join('&',map {
3682: my $name = escape($_);
3683: "$name=" . ( ref($form{$_}) eq 'ARRAY'
3684: ? join("&$name=", map {escape($_) } @{$form{$_}})
3685: : &escape($form{$_}) );
3686: } keys(%form)));
3687: } else {
3688: $request=new HTTP::Request('GET',$host.$fn);
3689: }
3690:
3691: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
3692: my $lonhost = $perlvar{'lonHostID'};
3693: my $islocal;
3694: if (($env{'request.course.id'}) &&
3695: ($form{'grade_courseid'} eq $env{'request.course.id'}) &&
3696: ($form{'grade_username'} ne '') && ($form{'grade_domain'} ne '') &&
3697: ($form{'grade_symb'} ne '') &&
3698: (&allowed('mgr',$env{'request.course.id'}.
3699: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:'')))) {
3700: $islocal = 1;
3701: }
3702: $response= &LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,
3703: '','','',$islocal);
3704:
3705: if (wantarray) {
3706: return ($response->content, $response);
3707: } else {
3708: return $response->content;
3709: }
3710: }
3711:
3712: sub externalssi {
3713: my ($url)=@_;
3714: my $request=new HTTP::Request('GET',$url);
3715: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar);
3716: if (wantarray) {
3717: return ($response->content, $response);
3718: } else {
3719: return $response->content;
3720: }
3721: }
3722:
3723:
3724: # If the local copy of a replicated resource is outdated, trigger a
3725: # connection from the homeserver to flush the delayed queue. If no update
3726: # happens, remove local copies of outdated resource (and corresponding
3727: # metadata file).
3728:
3729: sub remove_stale_resfile {
3730: my ($url) = @_;
3731: my $removed;
3732: if ($url=~m{^/res/($match_domain)/($match_username)/}) {
3733: my $audom = $1;
3734: my $auname = $2;
3735: unless (($url =~ /\.\d+\.\w+$/) || ($url =~ m{^/res/lib/templates/})) {
3736: my $homeserver = &homeserver($auname,$audom);
3737: unless (($homeserver eq 'no_host') ||
3738: (grep { $_ eq $homeserver } ¤t_machine_ids())) {
3739: my $fname = &filelocation('',$url);
3740: if (-e $fname) {
3741: my $hostname = &hostname($homeserver);
3742: if ($hostname) {
3743: my $protocol = $protocol{$homeserver};
3744: $protocol = 'http' if ($protocol ne 'https');
3745: my $uri = &declutter($url);
3746: my $request=new HTTP::Request('HEAD',$protocol.'://'.$hostname.'/raw/'.$uri);
3747: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,5,0,1);
3748: if ($response->is_success()) {
3749: my $remmodtime = &HTTP::Date::str2time( $response->header('Last-modified') );
3750: my $locmodtime = (stat($fname))[9];
3751: if ($locmodtime < $remmodtime) {
3752: my $stale;
3753: my $answer = &reply('pong',$homeserver);
3754: if ($answer eq $homeserver.':'.$perlvar{'lonHostID'}) {
3755: sleep(0.2);
3756: $locmodtime = (stat($fname))[9];
3757: if ($locmodtime < $remmodtime) {
3758: my $posstransfer = $fname.'.in.transfer';
3759: if ((-e $posstransfer) && ($remmodtime < (stat($posstransfer))[9])) {
3760: $removed = 1;
3761: } else {
3762: $stale = 1;
3763: }
3764: } else {
3765: $removed = 1;
3766: }
3767: } else {
3768: $stale = 1;
3769: }
3770: if ($stale) {
3771: if (unlink($fname)) {
3772: if ($uri!~/\.meta$/) {
3773: if (-e $fname.'.meta') {
3774: unlink($fname.'.meta');
3775: }
3776: }
3777: my $unsubresult = &unsubscribe($fname);
3778: unless ($unsubresult eq 'ok') {
3779: &logthis("no unsub of $fname from $homeserver, reason: $unsubresult");
3780: }
3781: $removed = 1;
3782: }
3783: }
3784: }
3785: }
3786: }
3787: }
3788: }
3789: }
3790: }
3791: return $removed;
3792: }
3793:
3794: # -------------------------------- Allow a /uploaded/ URI to be vouched for
3795:
3796: sub allowuploaded {
3797: my ($srcurl,$url)=@_;
3798: $url=&clutter(&declutter($url));
3799: my $dir=$url;
3800: $dir=~s/\/[^\/]+$//;
3801: my %httpref=();
3802: my $httpurl=&hreflocation('',$url);
3803: $httpref{'httpref.'.$httpurl}=$srcurl;
3804: &Apache::lonnet::appenv(\%httpref);
3805: }
3806:
3807: #
3808: # Determine if the current user should be able to edit a particular resource,
3809: # when viewing in course context.
3810: # (a) When viewing resource used to determine if "Edit" item is included in
3811: # Functions.
3812: # (b) When displaying folder contents in course editor, used to determine if
3813: # "Edit" link will be displayed alongside resource.
3814: #
3815: # input: six args -- filename (decluttered), course number, course domain,
3816: # url, symb (if registered) and group (if this is a group
3817: # item -- e.g., bulletin board, group page etc.).
3818: # output: array of five scalars --
3819: # $cfile -- url for file editing if editable on current server
3820: # $home -- homeserver of resource (i.e., for author if published,
3821: # or course if uploaded.).
3822: # $switchserver -- 1 if server switch will be needed.
3823: # $forceedit -- 1 if icon/link should be to go to edit mode
3824: # $forceview -- 1 if icon/link should be to go to view mode
3825: #
3826:
3827: sub can_edit_resource {
3828: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
3829: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
3830: #
3831: # For aboutme pages user can only edit his/her own.
3832: #
3833: if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
3834: my ($sdom,$sname) = ($1,$2);
3835: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
3836: $home = $env{'user.home'};
3837: $cfile = $resurl;
3838: if ($env{'form.forceedit'}) {
3839: $forceview = 1;
3840: } else {
3841: $forceedit = 1;
3842: }
3843: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3844: } else {
3845: return;
3846: }
3847: }
3848:
3849: if ($env{'request.course.id'}) {
3850: my $crsedit = &allowed('mdc',$env{'request.course.id'});
3851: if ($group ne '') {
3852: # if this is a group homepage or group bulletin board, check group privs
3853: my $allowed = 0;
3854: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
3855: if ((&allowed('mdg',$env{'request.course.id'}.
3856: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3857: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3858: $allowed = 1;
3859: }
3860: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
3861: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3862: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3863: $allowed = 1;
3864: }
3865: }
3866: if ($allowed) {
3867: $home=&homeserver($cnum,$cdom);
3868: if ($env{'form.forceedit'}) {
3869: $forceview = 1;
3870: } else {
3871: $forceedit = 1;
3872: }
3873: $cfile = $resurl;
3874: } else {
3875: return;
3876: }
3877: } else {
3878: if ($resurl =~ m{^/?adm/viewclasslist$}) {
3879: unless (&allowed('opa',$env{'request.course.id'})) {
3880: return;
3881: }
3882: } elsif (!$crsedit) {
3883: if ($env{'request.role'} =~ m{^st\./$cdom/$cnum}) {
3884: #
3885: # No edit allowed where CC has switched to student role.
3886: #
3887: return;
3888: } elsif (($resurl !~ m{^/res/$match_domain/$match_username/}) ||
3889: ($resurl =~ m{^/res/lib/templates/})) {
3890: return;
3891: }
3892: }
3893: }
3894: }
3895:
3896: if ($file ne '') {
3897: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
3898: if (&is_course_upload($file,$cnum,$cdom)) {
3899: $uploaded = 1;
3900: $incourse = 1;
3901: if ($file =~/\.(htm|html|css|js|txt)$/) {
3902: $cfile = &hreflocation('',$file);
3903: if ($env{'form.forceedit'}) {
3904: $forceview = 1;
3905: } else {
3906: $forceedit = 1;
3907: }
3908: }
3909: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
3910: $incourse = 1;
3911: if ($env{'form.forceedit'}) {
3912: $forceview = 1;
3913: } else {
3914: $forceedit = 1;
3915: }
3916: $cfile = $resurl;
3917: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
3918: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
3919: $incourse = 1;
3920: if ($env{'form.forceedit'}) {
3921: $forceview = 1;
3922: } else {
3923: $forceedit = 1;
3924: }
3925: $cfile = $resurl;
3926: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem') {
3927: $incourse = 1;
3928: $cfile = $resurl.'/smpedit';
3929: } elsif ($resurl =~ m{^/adm/wrapper/ext/}) {
3930: $incourse = 1;
3931: if ($env{'form.forceedit'}) {
3932: $forceview = 1;
3933: } else {
3934: $forceedit = 1;
3935: }
3936: $cfile = $resurl;
3937: } elsif (($resurl =~ m{^/ext/}) && ($symb ne '')) {
3938: my ($map,$id,$res) = &decode_symb($symb);
3939: if ($map =~ /\.page$/) {
3940: $incourse = 1;
3941: if ($env{'form.forceedit'}) {
3942: $forceview = 1;
3943: $cfile = $map;
3944: } else {
3945: $forceedit = 1;
3946: $cfile = '/adm/wrapper'.$resurl;
3947: }
3948: }
3949: } elsif ($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3950: $incourse = 1;
3951: if ($env{'form.forceedit'}) {
3952: $forceview = 1;
3953: } else {
3954: $forceedit = 1;
3955: }
3956: $cfile = $resurl;
3957: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3958: $incourse = 1;
3959: if ($env{'form.forceedit'}) {
3960: $forceview = 1;
3961: } else {
3962: $forceedit = 1;
3963: }
3964: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3965: }
3966: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
3967: my $template = '/res/lib/templates/simpleproblem.problem';
3968: if (&is_on_map($template)) {
3969: $incourse = 1;
3970: $forceview = 1;
3971: $cfile = $template;
3972: }
3973: } elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3974: $incourse = 1;
3975: if ($env{'form.forceedit'}) {
3976: $forceview = 1;
3977: } else {
3978: $forceedit = 1;
3979: }
3980: $cfile = $resurl;
3981: } elsif (($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3982: $incourse = 1;
3983: if ($env{'form.forceedit'}) {
3984: $forceview = 1;
3985: } else {
3986: $forceedit = 1;
3987: }
3988: $cfile = $resurl;
3989: } elsif (($resurl eq '/adm/extresedit') && ($symb || $env{'form.folderpath'})) {
3990: $incourse = 1;
3991: $forceview = 1;
3992: if ($symb) {
3993: my ($map,$id,$res)=&decode_symb($symb);
3994: $env{'request.symb'} = $symb;
3995: $cfile = &clutter($res);
3996: } else {
3997: $cfile = $env{'form.suppurl'};
3998: my $escfile = &unescape($cfile);
3999: if ($escfile =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}) {
4000: $cfile = '/adm/wrapper'.$escfile;
4001: } else {
4002: $escfile =~ s{^http://}{};
4003: $cfile = &escape("/adm/wrapper/ext/$escfile");
4004: }
4005: }
4006: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
4007: if ($env{'form.forceedit'}) {
4008: $forceview = 1;
4009: } else {
4010: $forceedit = 1;
4011: }
4012: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
4013: }
4014: }
4015: if ($uploaded || $incourse) {
4016: $home=&homeserver($cnum,$cdom);
4017: } elsif ($file !~ m{/$}) {
4018: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
4019: $file=~s{^($match_domain/$match_username)}{/priv/$1};
4020: # Check that the user has permission to edit this resource
4021: my $setpriv = 1;
4022: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
4023: if (defined($cfudom)) {
4024: $home=&homeserver($cfuname,$cfudom);
4025: $cfile=$file;
4026: }
4027: }
4028: if (($cfile ne '') && (!$incourse || $uploaded) &&
4029: (($home ne '') && ($home ne 'no_host'))) {
4030: my @ids=¤t_machine_ids();
4031: unless (grep(/^\Q$home\E$/,@ids)) {
4032: $switchserver=1;
4033: }
4034: }
4035: }
4036: return ($cfile,$home,$switchserver,$forceedit,$forceview);
4037: }
4038:
4039: sub is_course_upload {
4040: my ($file,$cnum,$cdom) = @_;
4041: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
4042: $uploadpath =~ s{^\/}{};
4043: if (($file =~ m{^\Q$uploadpath\E/userfiles/(docs|supplemental)/}) ||
4044: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/})) {
4045: return 1;
4046: }
4047: return;
4048: }
4049:
4050: sub in_course {
4051: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
4052: if ($hideprivileged) {
4053: my $skipuser;
4054: my %coursehash = &coursedescription($cdom.'_'.$cnum);
4055: my @possdoms = ($cdom);
4056: if ($coursehash{'checkforpriv'}) {
4057: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
4058: }
4059: if (&privileged($uname,$udom,\@possdoms)) {
4060: $skipuser = 1;
4061: if ($coursehash{'nothideprivileged'}) {
4062: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4063: my $user;
4064: if ($item =~ /:/) {
4065: $user = $item;
4066: } else {
4067: $user = join(':',split(/[\@]/,$item));
4068: }
4069: if ($user eq $uname.':'.$udom) {
4070: undef($skipuser);
4071: last;
4072: }
4073: }
4074: }
4075: if ($skipuser) {
4076: return 0;
4077: }
4078: }
4079: }
4080: $type ||= 'any';
4081: if (!defined($cdom) || !defined($cnum)) {
4082: my $cid = $env{'request.course.id'};
4083: $cdom = $env{'course.'.$cid.'.domain'};
4084: $cnum = $env{'course.'.$cid.'.num'};
4085: }
4086: my $typesref;
4087: if (($type eq 'any') || ($type eq 'all')) {
4088: $typesref = ['active','previous','future'];
4089: } elsif ($type eq 'previous' || $type eq 'future') {
4090: $typesref = [$type];
4091: }
4092: my %roles = &get_my_roles($uname,$udom,'userroles',
4093: $typesref,undef,[$cdom]);
4094: my ($tmp) = keys(%roles);
4095: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
4096: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
4097: if (@course_roles > 0) {
4098: return 1;
4099: }
4100: return 0;
4101: }
4102:
4103: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
4104: # input: action, courseID, current domain, intended
4105: # path to file, source of file, instruction to parse file for objects,
4106: # ref to hash for embedded objects,
4107: # ref to hash for codebase of java objects.
4108: # reference to scalar to accommodate mime type determined
4109: # from File::MMagic if $parser = parse.
4110: #
4111: # output: url to file (if action was uploaddoc),
4112: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
4113: #
4114: # Allows directory structure to be used within lonUsers/../userfiles/ for a
4115: # course.
4116: #
4117: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
4118: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
4119: # course's home server.
4120: #
4121: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
4122: # be copied from $source (current location) to
4123: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
4124: # and will then be copied to
4125: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
4126: # course's home server.
4127: #
4128: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
4129: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
4130: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
4131: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
4132: # in course's home server.
4133: #
4134:
4135: sub process_coursefile {
4136: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
4137: $mimetype)=@_;
4138: my $fetchresult;
4139: my $home=&homeserver($docuname,$docudom);
4140: if ($action eq 'propagate') {
4141: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
4142: $home);
4143: } else {
4144: my $fpath = '';
4145: my $fname = $file;
4146: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
4147: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
4148: my $filepath = &build_filepath($fpath);
4149: if ($action eq 'copy') {
4150: if ($source eq '') {
4151: $fetchresult = 'no source file';
4152: return $fetchresult;
4153: } else {
4154: my $destination = $filepath.'/'.$fname;
4155: rename($source,$destination);
4156: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
4157: $home);
4158: }
4159: } elsif ($action eq 'uploaddoc') {
4160: open(my $fh,'>',$filepath.'/'.$fname);
4161: print $fh $env{'form.'.$source};
4162: close($fh);
4163: if ($parser eq 'parse') {
4164: my $mm = new File::MMagic;
4165: my $type = $mm->checktype_filename($filepath.'/'.$fname);
4166: if ($type eq 'text/html') {
4167: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
4168: unless ($parse_result eq 'ok') {
4169: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
4170: }
4171: }
4172: if (ref($mimetype)) {
4173: $$mimetype = $type;
4174: }
4175: }
4176: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
4177: $home);
4178: if ($fetchresult eq 'ok') {
4179: return '/uploaded/'.$fpath.'/'.$fname;
4180: } else {
4181: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
4182: ' to host '.$home.': '.$fetchresult);
4183: return '/adm/notfound.html';
4184: }
4185: }
4186: }
4187: unless ( $fetchresult eq 'ok') {
4188: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
4189: ' to host '.$home.': '.$fetchresult);
4190: }
4191: return $fetchresult;
4192: }
4193:
4194: sub build_filepath {
4195: my ($fpath) = @_;
4196: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
4197: unless ($fpath eq '') {
4198: my @parts=split('/',$fpath);
4199: foreach my $part (@parts) {
4200: $filepath.= '/'.$part;
4201: if ((-e $filepath)!=1) {
4202: mkdir($filepath,0777);
4203: }
4204: }
4205: }
4206: return $filepath;
4207: }
4208:
4209: sub store_edited_file {
4210: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
4211: my $file = $primary_url;
4212: $file =~ s#^/uploaded/$docudom/$docuname/##;
4213: my $fpath = '';
4214: my $fname = $file;
4215: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
4216: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
4217: my $filepath = &build_filepath($fpath);
4218: open(my $fh,'>',$filepath.'/'.$fname);
4219: print $fh $content;
4220: close($fh);
4221: my $home=&homeserver($docuname,$docudom);
4222: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
4223: $home);
4224: if ($$fetchresult eq 'ok') {
4225: return '/uploaded/'.$fpath.'/'.$fname;
4226: } else {
4227: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
4228: ' to host '.$home.': '.$$fetchresult);
4229: return '/adm/notfound.html';
4230: }
4231: }
4232:
4233: sub clean_filename {
4234: my ($fname,$args)=@_;
4235: # Replace Windows backslashes by forward slashes
4236: $fname=~s/\\/\//g;
4237: if (!$args->{'keep_path'}) {
4238: # Get rid of everything but the actual filename
4239: $fname=~s/^.*\/([^\/]+)$/$1/;
4240: }
4241: # Replace spaces by underscores
4242: $fname=~s/\s+/\_/g;
4243: # Transliterate non-ascii text to ascii
4244: my $lang = &Apache::lonlocal::current_language();
4245: $fname = &LONCAPA::transliterate::fname_to_ascii($fname,$lang);
4246: # Replace all other weird characters by nothing
4247: $fname=~s{[^/\w\.\-]}{}g;
4248: # Replace all .\d. sequences with _\d. so they no longer look like version
4249: # numbers
4250: $fname=~s/\.(\d+)(?=\.)/_$1/g;
4251: # Replace three or more adjacent underscores with one for consistency
4252: # with loncfile::filename_check() so complete url can be extracted by
4253: # lonnet::decode_symb()
4254: $fname=~s/_{3,}/_/g;
4255: return $fname;
4256: }
4257:
4258: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
4259: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
4260: # image with the same aspect ratio as the original, but with dimensions which do
4261: # not exceed $resizewidth and $resizeheight.
4262:
4263: sub resizeImage {
4264: my ($img_path,$resizewidth,$resizeheight) = @_;
4265: my $ima = Image::Magick->new;
4266: my $resized;
4267: if (-e $img_path) {
4268: $ima->Read($img_path);
4269: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
4270: my $width = $ima->Get('width');
4271: my $height = $ima->Get('height');
4272: if ($width > $resizewidth) {
4273: my $factor = $width/$resizewidth;
4274: my $newheight = $height/$factor;
4275: $ima->Scale(width=>$resizewidth,height=>$newheight);
4276: $resized = 1;
4277: }
4278: }
4279: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
4280: my $width = $ima->Get('width');
4281: my $height = $ima->Get('height');
4282: if ($height > $resizeheight) {
4283: my $factor = $height/$resizeheight;
4284: my $newwidth = $width/$factor;
4285: $ima->Scale(width=>$newwidth,height=>$resizeheight);
4286: $resized = 1;
4287: }
4288: }
4289: if ($resized) {
4290: $ima->Write($img_path);
4291: }
4292: }
4293: return;
4294: }
4295:
4296: # --------------- Take an uploaded file and put it into the userfiles directory
4297: # input: $formname - the contents of the file are in $env{"form.$formname"}
4298: # the desired filename is in $env{"form.$formname.filename"}
4299: # $context - possible values: coursedoc, existingfile, overwrite,
4300: # canceloverwrite, scantron, toollogo or ''.
4301: # if 'coursedoc': upload to the current course
4302: # if 'existingfile': write file to tmp/overwrites directory
4303: # if 'canceloverwrite': delete file written to tmp/overwrites directory
4304: # $context is passed as argument to &finishuserfileupload
4305: # $subdir - directory in userfile to store the file into
4306: # $parser - instruction to parse file for objects ($parser = parse) or
4307: # if context is 'scantron', $parser is hashref of csv column mapping
4308: # (e.g.,{ PaperID => 0, LastName => 1, FirstName => 2, ID => 3,
4309: # Section => 4, CODE => 5, FirstQuestion => 9 }).
4310: # $allfiles - reference to hash for embedded objects
4311: # $codebase - reference to hash for codebase of java objects
4312: # $destuname - username for permanent storage of uploaded file
4313: # $destudom - domain for permanaent storage of uploaded file
4314: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
4315: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
4316: # $resizewidth - width (pixels) to which to resize uploaded image
4317: # $resizeheight - height (pixels) to which to resize uploaded image
4318: # $mimetype - reference to scalar to accommodate mime type determined
4319: # from File::MMagic.
4320: #
4321: # output: url of file in userspace, or error: <message>
4322: # or /adm/notfound.html if failure to upload occurse
4323:
4324: sub userfileupload {
4325: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
4326: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
4327: if (!defined($subdir)) { $subdir='unknown'; }
4328: my $fname=$env{'form.'.$formname.'.filename'};
4329: $fname=&clean_filename($fname);
4330: # See if there is anything left
4331: unless ($fname) { return 'error: no uploaded file'; }
4332: # If filename now begins with a . prepend unix timestamp _ milliseconds
4333: if ($fname =~ /^\./) {
4334: my ($s,$usec) = &gettimeofday();
4335: while (length($usec) < 6) {
4336: $usec = '0'.$usec;
4337: }
4338: $fname = $s.'_'.substr($usec,0,3).$fname;
4339: }
4340: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
4341: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
4342: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
4343: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
4344: my $now = time;
4345: my $filepath;
4346: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
4347: $filepath = 'tmp/helprequests/'.$now;
4348: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
4349: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
4350: '_'.$env{'user.domain'}.'/pending';
4351: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
4352: my ($docuname,$docudom);
4353: if ($destudom =~ /^$match_domain$/) {
4354: $docudom = $destudom;
4355: } else {
4356: $docudom = $env{'user.domain'};
4357: }
4358: if ($destuname =~ /^$match_username$/) {
4359: $docuname = $destuname;
4360: } else {
4361: $docuname = $env{'user.name'};
4362: }
4363: if (exists($env{'form.group'})) {
4364: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4365: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4366: }
4367: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
4368: if ($context eq 'canceloverwrite') {
4369: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
4370: if (-e $tempfile) {
4371: my @info = stat($tempfile);
4372: if ($info[9] eq $env{'form.timestamp'}) {
4373: unlink($tempfile);
4374: }
4375: }
4376: return;
4377: }
4378: }
4379: # Create the directory if not present
4380: my @parts=split(/\//,$filepath);
4381: my $fullpath = $perlvar{'lonDaemons'};
4382: for (my $i=0;$i<@parts;$i++) {
4383: $fullpath .= '/'.$parts[$i];
4384: if ((-e $fullpath)!=1) {
4385: mkdir($fullpath,0777);
4386: }
4387: }
4388: open(my $fh,'>',$fullpath.'/'.$fname);
4389: print $fh $env{'form.'.$formname};
4390: close($fh);
4391: if ($context eq 'existingfile') {
4392: my @info = stat($fullpath.'/'.$fname);
4393: return ($fullpath.'/'.$fname,$info[9]);
4394: } else {
4395: return $fullpath.'/'.$fname;
4396: }
4397: }
4398: if ($subdir eq 'scantron') {
4399: $fname = 'scantron_orig_'.$fname;
4400: } else {
4401: $fname="$subdir/$fname";
4402: }
4403: if ($context eq 'coursedoc') {
4404: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4405: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4406: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
4407: return &finishuserfileupload($docuname,$docudom,
4408: $formname,$fname,$parser,$allfiles,
4409: $codebase,$thumbwidth,$thumbheight,
4410: $resizewidth,$resizeheight,$context,$mimetype);
4411: } else {
4412: if ($env{'form.folder'}) {
4413: $fname=$env{'form.folder'}.'/'.$fname;
4414: }
4415: return &process_coursefile('uploaddoc',$docuname,$docudom,
4416: $fname,$formname,$parser,
4417: $allfiles,$codebase,$mimetype);
4418: }
4419: } elsif (defined($destuname)) {
4420: my $docuname=$destuname;
4421: my $docudom=$destudom;
4422: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
4423: $parser,$allfiles,$codebase,
4424: $thumbwidth,$thumbheight,
4425: $resizewidth,$resizeheight,$context,$mimetype);
4426: } else {
4427: my $docuname=$env{'user.name'};
4428: my $docudom=$env{'user.domain'};
4429: if ((exists($env{'form.group'})) || ($context eq 'syllabus')) {
4430: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4431: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4432: }
4433: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
4434: $parser,$allfiles,$codebase,
4435: $thumbwidth,$thumbheight,
4436: $resizewidth,$resizeheight,$context,$mimetype);
4437: }
4438: }
4439:
4440: sub finishuserfileupload {
4441: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
4442: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
4443: my $path=$docudom.'/'.$docuname.'/';
4444: my $filepath=$perlvar{'lonDocRoot'};
4445:
4446: my ($fnamepath,$file,$fetchthumb);
4447: $file=$fname;
4448: if ($fname=~m|/|) {
4449: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
4450: $path.=$fnamepath.'/';
4451: }
4452: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
4453: my $count;
4454: for ($count=4;$count<=$#parts;$count++) {
4455: $filepath.="/$parts[$count]";
4456: if ((-e $filepath)!=1) {
4457: mkdir($filepath,0777);
4458: }
4459: }
4460:
4461: # Save the file
4462: {
4463: if (!open(FH,'>',$filepath.'/'.$file)) {
4464: &logthis('Failed to create '.$filepath.'/'.$file);
4465: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
4466: return '/adm/notfound.html';
4467: }
4468: if ($context eq 'overwrite') {
4469: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
4470: my $target = $filepath.'/'.$file;
4471: if (-e $source) {
4472: my @info = stat($source);
4473: if ($info[9] eq $env{'form.timestamp'}) {
4474: unless (&File::Copy::move($source,$target)) {
4475: &logthis('Failed to overwrite '.$filepath.'/'.$file);
4476: return "Moving from $source failed";
4477: }
4478: } else {
4479: return "Temporary file: $source had unexpected date/time for last modification";
4480: }
4481: } else {
4482: return "Temporary file: $source missing";
4483: }
4484: } elsif (!print FH ($env{'form.'.$formname})) {
4485: &logthis('Failed to write to '.$filepath.'/'.$file);
4486: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
4487: return '/adm/notfound.html';
4488: }
4489: close(FH);
4490: if ($resizewidth && $resizeheight) {
4491: my $mm = new File::MMagic;
4492: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
4493: if ($mime_type =~ m{^image/}) {
4494: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
4495: }
4496: }
4497: }
4498: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
4499: if (ref($mimetype)) {
4500: if ($$mimetype eq '') {
4501: my $mm = new File::MMagic;
4502: my $type = $mm->checktype_filename($filepath.'/'.$file);
4503: $$mimetype = $type;
4504: }
4505: }
4506: }
4507: if (($context ne 'scantron') && ($parser eq 'parse')) {
4508: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
4509: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
4510: $allfiles,$codebase);
4511: unless ($parse_result eq 'ok') {
4512: &logthis('Failed to parse '.$filepath.$file.
4513: ' for embedded media: '.$parse_result);
4514: }
4515: }
4516: } elsif (($context eq 'scantron') && (ref($parser) eq 'HASH')) {
4517: my $format = $env{'form.scantron_format'};
4518: &bubblesheet_converter($docudom,$filepath.'/'.$file,$parser,$format);
4519: }
4520: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
4521: my $input = $filepath.'/'.$file;
4522: my $output = $filepath.'/'.'tn-'.$file;
4523: my $makethumb;
4524: my $thumbsize = $thumbwidth.'x'.$thumbheight;
4525: if ($context eq 'toollogo') {
4526: my ($fullwidth,$fullheight) = &check_dimensions($input);
4527: if ($fullwidth ne '' && $fullheight ne '') {
4528: if ($fullwidth > $thumbwidth && $fullheight > $thumbheight) {
4529: $makethumb = 1;
4530: }
4531: }
4532: } else {
4533: $makethumb = 1;
4534: }
4535: if ($makethumb) {
4536: my @args = ('convert','-sample',$thumbsize,$input,$output);
4537: system({$args[0]} @args);
4538: if (-e $filepath.'/'.'tn-'.$file) {
4539: $fetchthumb = 1;
4540: }
4541: }
4542: }
4543:
4544: # Notify homeserver to grep it
4545: #
4546: my $docuhome=&homeserver($docuname,$docudom);
4547: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
4548: if ($fetchresult eq 'ok') {
4549: if ($fetchthumb) {
4550: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
4551: if ($thumbresult ne 'ok') {
4552: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
4553: $docuhome.': '.$thumbresult);
4554: }
4555: }
4556: #
4557: # Return the URL to it
4558: return '/uploaded/'.$path.$file;
4559: } else {
4560: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
4561: ': '.$fetchresult);
4562: return '/adm/notfound.html';
4563: }
4564: }
4565:
4566: sub extract_embedded_items {
4567: my ($fullpath,$allfiles,$codebase,$content) = @_;
4568: my @state = ();
4569: my (%lastids,%related,%shockwave,%flashvars);
4570: my %javafiles = (
4571: codebase => '',
4572: code => '',
4573: archive => ''
4574: );
4575: my %mediafiles = (
4576: src => '',
4577: movie => '',
4578: );
4579: my $p;
4580: if ($content) {
4581: $p = HTML::LCParser->new($content);
4582: } else {
4583: $p = HTML::LCParser->new($fullpath);
4584: }
4585: while (my $t=$p->get_token()) {
4586: if ($t->[0] eq 'S') {
4587: my ($tagname, $attr) = ($t->[1],$t->[2]);
4588: push(@state, $tagname);
4589: if (lc($tagname) eq 'allow') {
4590: &add_filetype($allfiles,$attr->{'src'},'src');
4591: }
4592: if (lc($tagname) eq 'img') {
4593: &add_filetype($allfiles,$attr->{'src'},'src');
4594: }
4595: if (lc($tagname) eq 'a') {
4596: unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) {
4597: &add_filetype($allfiles,$attr->{'href'},'href');
4598: }
4599: }
4600: if (lc($tagname) eq 'script') {
4601: my $src;
4602: if ($attr->{'archive'} =~ /\.jar$/i) {
4603: &add_filetype($allfiles,$attr->{'archive'},'archive');
4604: } else {
4605: if ($attr->{'src'} ne '') {
4606: $src = $attr->{'src'};
4607: &add_filetype($allfiles,$src,'src');
4608: }
4609: }
4610: my $text = $p->get_trimmed_text();
4611: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
4612: my @swfargs = split(/,/,$1);
4613: foreach my $item (@swfargs) {
4614: $item =~ s/["']//g;
4615: $item =~ s/^\s+//;
4616: $item =~ s/\s+$//;
4617: }
4618: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
4619: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
4620: push(@{$related{$swfargs[0]}},$swfargs[2]);
4621: } else {
4622: $related{$swfargs[0]} = [$swfargs[2]];
4623: }
4624: }
4625: }
4626: }
4627: if (lc($tagname) eq 'link') {
4628: if (lc($attr->{'rel'}) eq 'stylesheet') {
4629: &add_filetype($allfiles,$attr->{'href'},'href');
4630: }
4631: }
4632: if (lc($tagname) eq 'object' ||
4633: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
4634: foreach my $item (keys(%javafiles)) {
4635: $javafiles{$item} = '';
4636: }
4637: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
4638: $lastids{lc($tagname)} = $attr->{'id'};
4639: }
4640: }
4641: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
4642: my $name = lc($attr->{'name'});
4643: foreach my $item (keys(%javafiles)) {
4644: if ($name eq $item) {
4645: $javafiles{$item} = $attr->{'value'};
4646: last;
4647: }
4648: }
4649: my $pathfrom;
4650: foreach my $item (keys(%mediafiles)) {
4651: if ($name eq $item) {
4652: $pathfrom = $attr->{'value'};
4653: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
4654: &add_filetype($allfiles,$pathfrom,$name);
4655: last;
4656: }
4657: }
4658: if ($name eq 'flashvars') {
4659: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
4660: }
4661: if ($pathfrom ne '') {
4662: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
4663: $pathfrom);
4664: }
4665: }
4666: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
4667: foreach my $item (keys(%javafiles)) {
4668: if ($attr->{$item}) {
4669: $javafiles{$item} = $attr->{$item};
4670: last;
4671: }
4672: }
4673: foreach my $item (keys(%mediafiles)) {
4674: if ($attr->{$item}) {
4675: &add_filetype($allfiles,$attr->{$item},$item);
4676: last;
4677: }
4678: }
4679: if (lc($tagname) eq 'embed') {
4680: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
4681: &embedded_dependency($allfiles,\%related,$attr->{'name'},
4682: $attr->{'src'});
4683: }
4684: }
4685: }
4686: if (lc($tagname) eq 'iframe') {
4687: my $src = $attr->{'src'} ;
4688: if (($src ne '') && ($src !~ m{^(/|https?://)})) {
4689: &add_filetype($allfiles,$src,'src');
4690: } elsif ($src =~ m{^/}) {
4691: if ($env{'request.course.id'}) {
4692: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4693: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4694: my $url = &hreflocation('',$fullpath);
4695: if ($url =~ m{^/uploaded/$cdom/$cnum/docs/(\w+/\d+)/}) {
4696: my $relpath = $1;
4697: if ($src =~ m{^/uploaded/$cdom/$cnum/docs/\Q$relpath\E/(.+)$}) {
4698: &add_filetype($allfiles,$1,'src');
4699: }
4700: }
4701: }
4702: }
4703: }
4704: if ($t->[4] =~ m{/>$}) {
4705: pop(@state);
4706: }
4707: } elsif ($t->[0] eq 'E') {
4708: my ($tagname) = ($t->[1]);
4709: if ($javafiles{'codebase'} ne '') {
4710: $javafiles{'codebase'} .= '/';
4711: }
4712: if (lc($tagname) eq 'applet' ||
4713: lc($tagname) eq 'object' ||
4714: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
4715: ) {
4716: foreach my $item (keys(%javafiles)) {
4717: if ($item ne 'codebase' && $javafiles{$item} ne '') {
4718: my $file=$javafiles{'codebase'}.$javafiles{$item};
4719: &add_filetype($allfiles,$file,$item);
4720: }
4721: }
4722: }
4723: pop @state;
4724: }
4725: }
4726: foreach my $id (sort(keys(%flashvars))) {
4727: if ($shockwave{$id} ne '') {
4728: my @pairs = split(/\&/,$flashvars{$id});
4729: foreach my $pair (@pairs) {
4730: my ($key,$value) = split(/\=/,$pair);
4731: if ($key eq 'thumb') {
4732: &add_filetype($allfiles,$value,$key);
4733: } elsif ($key eq 'content') {
4734: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
4735: my ($ext) = ($value =~ /\.([^.]+)$/);
4736: if ($ext ne '') {
4737: &add_filetype($allfiles,$path.$value,$ext);
4738: }
4739: }
4740: }
4741: }
4742: }
4743: return 'ok';
4744: }
4745:
4746: sub add_filetype {
4747: my ($allfiles,$file,$type)=@_;
4748: if (exists($allfiles->{$file})) {
4749: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
4750: push(@{$allfiles->{$file}}, &escape($type));
4751: }
4752: } else {
4753: @{$allfiles->{$file}} = (&escape($type));
4754: }
4755: }
4756:
4757: sub embedded_dependency {
4758: my ($allfiles,$related,$identifier,$pathfrom) = @_;
4759: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
4760: if (($identifier ne '') &&
4761: (ref($related->{$identifier}) eq 'ARRAY') &&
4762: ($pathfrom ne '')) {
4763: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
4764: foreach my $dep (@{$related->{$identifier}}) {
4765: &add_filetype($allfiles,$path.$dep,'object');
4766: }
4767: }
4768: }
4769: return;
4770: }
4771:
4772: sub check_dimensions {
4773: my ($inputfile) = @_;
4774: my ($fullwidth,$fullheight);
4775: if (($inputfile =~ m|^[/\w.\-]+$|) && (-e $inputfile)) {
4776: my $mm = new File::MMagic;
4777: my $mime_type = $mm->checktype_filename($inputfile);
4778: if ($mime_type =~ m{^image/}) {
4779: if (open(PIPE,"identify $inputfile 2>&1 |")) {
4780: my $imageinfo = <PIPE>;
4781: if (!close(PIPE)) {
4782: &Apache::lonnet::logthis("Failed to close PIPE opened to retrieve image information for $inputfile");
4783: }
4784: chomp($imageinfo);
4785: my ($fullsize) =
4786: ($imageinfo =~ /^\Q$inputfile\E\s+\w+\s+(\d+x\d+)/);
4787: if ($fullsize) {
4788: ($fullwidth,$fullheight) = split(/x/,$fullsize);
4789: }
4790: }
4791: }
4792: }
4793: return ($fullwidth,$fullheight);
4794: }
4795:
4796: sub bubblesheet_converter {
4797: my ($cdom,$fullpath,$config,$format) = @_;
4798: if ((&domain($cdom) ne '') &&
4799: ($fullpath =~ m{^\Q$perlvar{'lonDocRoot'}/userfiles/$cdom/\E$match_courseid/scantron_orig}) &&
4800: (-e $fullpath) && (ref($config) eq 'HASH') && ($format ne '')) {
4801: my (%csvcols,%csvoptions);
4802: if (ref($config->{'fields'}) eq 'HASH') {
4803: %csvcols = %{$config->{'fields'}};
4804: }
4805: if (ref($config->{'options'}) eq 'HASH') {
4806: %csvoptions = %{$config->{'options'}};
4807: }
4808: my %csvbynum = reverse(%csvcols);
4809: my %scantronconf = &get_scantron_config($format,$cdom);
4810: if (keys(%scantronconf)) {
4811: my %bynum = (
4812: $scantronconf{CODEstart} => 'CODEstart',
4813: $scantronconf{IDstart} => 'IDstart',
4814: $scantronconf{PaperID} => 'PaperID',
4815: $scantronconf{FirstName} => 'FirstName',
4816: $scantronconf{LastName} => 'LastName',
4817: $scantronconf{Qstart} => 'Qstart',
4818: );
4819: my @ordered;
4820: foreach my $item (sort { $a <=> $b } keys(%bynum)) {
4821: push(@ordered,$bynum{$item});
4822: }
4823: my %mapstart = (
4824: CODEstart => 'CODE',
4825: IDstart => 'ID',
4826: PaperID => 'PaperID',
4827: FirstName => 'FirstName',
4828: LastName => 'LastName',
4829: Qstart => 'FirstQuestion',
4830: );
4831: my %maplength = (
4832: CODEstart => 'CODElength',
4833: IDstart => 'IDlength',
4834: PaperID => 'PaperIDlength',
4835: FirstName => 'FirstNamelength',
4836: LastName => 'LastNamelength',
4837: );
4838: if (open(my $fh,'<',$fullpath)) {
4839: my $output;
4840: my %lettdig = &letter_to_digits();
4841: my %diglett = reverse(%lettdig);
4842: my $numletts = scalar(keys(%lettdig));
4843: my $num = 0;
4844: while (my $line=<$fh>) {
4845: $num ++;
4846: next if (($num == 1) && ($csvoptions{'hdr'} == 1));
4847: $line =~ s{[\r\n]+$}{};
4848: my %found;
4849: my @values = split(/,/,$line,-1);
4850: my ($qstart,$record);
4851: for (my $i=0; $i<@values; $i++) {
4852: if ((($qstart ne '') && ($i > $qstart)) ||
4853: ($csvbynum{$i} eq 'FirstQuestion')) {
4854: if ($values[$i] eq '') {
4855: $values[$i] = $scantronconf{'Qoff'};
4856: } elsif ($scantronconf{'Qon'} eq 'number') {
4857: if ($values[$i] =~ /^[A-Ja-j]$/) {
4858: $values[$i] = $lettdig{uc($values[$i])};
4859: }
4860: } elsif ($scantronconf{'Qon'} eq 'letter') {
4861: if ($values[$i] =~ /^[0-9]$/) {
4862: $values[$i] = $diglett{$values[$i]};
4863: }
4864: } else {
4865: if ($values[$i] =~ /^[0-9A-Ja-j]$/) {
4866: my $digit;
4867: if ($values[$i] =~ /^[A-Ja-j]$/) {
4868: $digit = $lettdig{uc($values[$i])}-1;
4869: if ($values[$i] eq 'J') {
4870: $digit += $numletts;
4871: }
4872: } elsif ($values[$i] =~ /^[0-9]$/) {
4873: $digit = $values[$i]-1;
4874: if ($values[$i] eq '0') {
4875: $digit += $numletts;
4876: }
4877: }
4878: my $qval='';
4879: for (my $j=0; $j<$scantronconf{'Qlength'}; $j++) {
4880: if ($j == $digit) {
4881: $qval .= $scantronconf{'Qon'};
4882: } else {
4883: $qval .= $scantronconf{'Qoff'};
4884: }
4885: }
4886: $values[$i] = $qval;
4887: }
4888: }
4889: if (length($values[$i]) > $scantronconf{'Qlength'}) {
4890: $values[$i] = substr($values[$i],0,$scantronconf{'Qlength'});
4891: }
4892: my $numblank = $scantronconf{'Qlength'} - length($values[$i]);
4893: if ($numblank > 0) {
4894: $values[$i] .= ($scantronconf{'Qoff'} x $numblank);
4895: }
4896: if ($csvbynum{$i} eq 'FirstQuestion') {
4897: $qstart = $i;
4898: $found{$csvbynum{$i}} = $values[$i];
4899: } else {
4900: $found{'FirstQuestion'} .= $values[$i];
4901: }
4902: } elsif (exists($csvbynum{$i})) {
4903: if ($csvoptions{'rem'}) {
4904: $values[$i] =~ s/^\s+//;
4905: }
4906: if (($csvbynum{$i} eq 'PaperID') && ($csvoptions{'pad'})) {
4907: while (length($values[$i]) < $scantronconf{$maplength{$csvbynum{$i}}}) {
4908: $values[$i] = '0'.$values[$i];
4909: }
4910: }
4911: $found{$csvbynum{$i}} = $values[$i];
4912: }
4913: }
4914: foreach my $item (@ordered) {
4915: my $currlength = 1+length($record);
4916: my $numspaces = $scantronconf{$item} - $currlength;
4917: if ($numspaces > 0) {
4918: $record .= (' ' x $numspaces);
4919: }
4920: if (($mapstart{$item} ne '') && (exists($found{$mapstart{$item}}))) {
4921: unless ($item eq 'Qstart') {
4922: if (length($found{$mapstart{$item}}) > $scantronconf{$maplength{$item}}) {
4923: $found{$mapstart{$item}} = substr($found{$mapstart{$item}},0,$scantronconf{$maplength{$item}});
4924: }
4925: }
4926: $record .= $found{$mapstart{$item}};
4927: }
4928: }
4929: $output .= "$record\n";
4930: }
4931: close($fh);
4932: if ($output) {
4933: if (open(my $fh,'>',$fullpath)) {
4934: print $fh $output;
4935: close($fh);
4936: }
4937: }
4938: }
4939: }
4940: return;
4941: }
4942: }
4943:
4944: sub letter_to_digits {
4945: my %lettdig = (
4946: A => 1,
4947: B => 2,
4948: C => 3,
4949: D => 4,
4950: E => 5,
4951: F => 6,
4952: G => 7,
4953: H => 8,
4954: I => 9,
4955: J => 0,
4956: );
4957: return %lettdig;
4958: }
4959:
4960: sub get_scantron_config {
4961: my ($which,$cdom) = @_;
4962: my @lines = &get_scantronformat_file($cdom);
4963: my %config;
4964: #FIXME probably should move to XML it has already gotten a bit much now
4965: foreach my $line (@lines) {
4966: my ($name,$descrip)=split(/:/,$line);
4967: if ($name ne $which ) { next; }
4968: chomp($line);
4969: my @config=split(/:/,$line);
4970: $config{'name'}=$config[0];
4971: $config{'description'}=$config[1];
4972: $config{'CODElocation'}=$config[2];
4973: $config{'CODEstart'}=$config[3];
4974: $config{'CODElength'}=$config[4];
4975: $config{'IDstart'}=$config[5];
4976: $config{'IDlength'}=$config[6];
4977: $config{'Qstart'}=$config[7];
4978: $config{'Qlength'}=$config[8];
4979: $config{'Qoff'}=$config[9];
4980: $config{'Qon'}=$config[10];
4981: $config{'PaperID'}=$config[11];
4982: $config{'PaperIDlength'}=$config[12];
4983: $config{'FirstName'}=$config[13];
4984: $config{'FirstNamelength'}=$config[14];
4985: $config{'LastName'}=$config[15];
4986: $config{'LastNamelength'}=$config[16];
4987: $config{'BubblesPerRow'}=$config[17];
4988: last;
4989: }
4990: return %config;
4991: }
4992:
4993: sub get_scantronformat_file {
4994: my ($cdom) = @_;
4995: if ($cdom eq '') {
4996: $cdom= $env{'course.'.$env{'request.course.id'}.'.domain'};
4997: }
4998: my %domconfig = &get_dom('configuration',['scantron'],$cdom);
4999: my $gottab = 0;
5000: my @lines;
5001: if (ref($domconfig{'scantron'}) eq 'HASH') {
5002: if ($domconfig{'scantron'}{'scantronformat'} ne '') {
5003: my $formatfile = &getfile($perlvar{'lonDocRoot'}.$domconfig{'scantron'}{'scantronformat'});
5004: if ($formatfile ne '-1') {
5005: @lines = split("\n",$formatfile,-1);
5006: $gottab = 1;
5007: }
5008: }
5009: }
5010: if (!$gottab) {
5011: my $confname = $cdom.'-domainconfig';
5012: my $default = $perlvar{'lonDocRoot'}.'/res/'.$cdom.'/'.$confname.'/default.tab';
5013: my $formatfile = &getfile($default);
5014: if ($formatfile ne '-1') {
5015: @lines = split("\n",$formatfile,-1);
5016: $gottab = 1;
5017: }
5018: }
5019: if (!$gottab) {
5020: my @domains = ¤t_machine_domains();
5021: if (grep(/^\Q$cdom\E$/,@domains)) {
5022: if (open(my $fh,'<',$perlvar{'lonTabDir'}.'/scantronformat.tab')) {
5023: @lines = <$fh>;
5024: close($fh);
5025: }
5026: } else {
5027: if (open(my $fh,'<',$perlvar{'lonTabDir'}.'/default_scantronformat.tab')) {
5028: @lines = <$fh>;
5029: close($fh);
5030: }
5031: }
5032: chomp(@lines);
5033: }
5034: return @lines;
5035: }
5036:
5037: sub removeuploadedurl {
5038: my ($url)=@_;
5039: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
5040: return &removeuserfile($uname,$udom,$fname);
5041: }
5042:
5043: sub removeuserfile {
5044: my ($docuname,$docudom,$fname)=@_;
5045: my $home=&homeserver($docuname,$docudom);
5046: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
5047: if ($result eq 'ok') {
5048: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
5049: my $metafile = $fname.'.meta';
5050: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
5051: my $url = "/uploaded/$docudom/$docuname/$fname";
5052: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
5053: my $sqlresult =
5054: &update_portfolio_table($docuname,$docudom,$file,
5055: 'portfolio_metadata',$group,
5056: 'delete');
5057: }
5058: }
5059: return $result;
5060: }
5061:
5062: sub mkdiruserfile {
5063: my ($docuname,$docudom,$dir)=@_;
5064: my $home=&homeserver($docuname,$docudom);
5065: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
5066: }
5067:
5068: sub renameuserfile {
5069: my ($docuname,$docudom,$old,$new)=@_;
5070: my $home=&homeserver($docuname,$docudom);
5071: my $result = &reply("renameuserfile:$docudom:$docuname:".
5072: &escape("$old").':'.&escape("$new"),$home);
5073: if ($result eq 'ok') {
5074: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
5075: my $oldmeta = $old.'.meta';
5076: my $newmeta = $new.'.meta';
5077: my $metaresult =
5078: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
5079: my $url = "/uploaded/$docudom/$docuname/$old";
5080: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
5081: my $sqlresult =
5082: &update_portfolio_table($docuname,$docudom,$file,
5083: 'portfolio_metadata',$group,
5084: 'delete');
5085: }
5086: }
5087: return $result;
5088: }
5089:
5090: # ------------------------------------------------------------------------- Log
5091:
5092: sub log {
5093: my ($dom,$nam,$hom,$what)=@_;
5094: return critical("log:$dom:$nam:$what",$hom);
5095: }
5096:
5097: # ------------------------------------------------------------------ Course Log
5098: #
5099: # This routine flushes several buffers of non-mission-critical nature
5100: #
5101:
5102: sub flushcourselogs {
5103: &logthis('Flushing log buffers');
5104: #
5105: # course logs
5106: # This is a log of all transactions in a course, which can be used
5107: # for data mining purposes
5108: #
5109: # It also collects the courseid database, which lists last transaction
5110: # times and course titles for all courseids
5111: #
5112: my %courseidbuffer=();
5113: foreach my $crsid (keys(%courselogs)) {
5114: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
5115: &escape($courselogs{$crsid}),
5116: $coursehombuf{$crsid}) eq 'ok') {
5117: delete $courselogs{$crsid};
5118: } else {
5119: &logthis('Failed to flush log buffer for '.$crsid);
5120: if (length($courselogs{$crsid})>40000) {
5121: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
5122: " exceeded maximum size, deleting.</font>");
5123: delete $courselogs{$crsid};
5124: }
5125: }
5126: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
5127: 'description' => $coursedescrbuf{$crsid},
5128: 'inst_code' => $courseinstcodebuf{$crsid},
5129: 'type' => $coursetypebuf{$crsid},
5130: 'owner' => $courseownerbuf{$crsid},
5131: };
5132: }
5133: #
5134: # Write course id database (reverse lookup) to homeserver of courses
5135: # Is used in pickcourse
5136: #
5137: foreach my $crs_home (keys(%courseidbuffer)) {
5138: my $response = &courseidput(&host_domain($crs_home),
5139: $courseidbuffer{$crs_home},
5140: $crs_home,'timeonly');
5141: }
5142: #
5143: # File accesses
5144: # Writes to the dynamic metadata of resources to get hit counts, etc.
5145: #
5146: foreach my $entry (keys(%accesshash)) {
5147: if ($entry =~ /___count$/) {
5148: my ($dom,$name);
5149: ($dom,$name,undef)=
5150: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
5151: if (! defined($dom) || $dom eq '' ||
5152: ! defined($name) || $name eq '') {
5153: my $cid = $env{'request.course.id'};
5154: #
5155: # FIXME 11/29/2021
5156: # Typo in rev. 1.458 (2003/12/09)??
5157: # These should likely by $env{'course.'.$cid.'.domain'} and $env{'course.'.$cid.'.num'}
5158: #
5159: # While these ramain as $env{'request.'.$cid.'.domain'} and $env{'request.'.$cid.'.num'}
5160: # $dom and $name will always be null, so the &inc() call will default to storing this data
5161: # in a nohist_accesscount.db file for the user rather than the course.
5162: #
5163: # That said there is a lot of noise in the data being stored.
5164: # So counts for prtspool/ and adm/ etc. are recorded.
5165: #
5166: # A review of which items ending '___count' are written to %accesshash should likely be
5167: # made before deciding whether to set these to 'course.' instead of 'request.'
5168: #
5169: # Under the current scheme each user receives a nohist_accesscount.db file listing
5170: # accesses for things which are not published resources, regardless of course, and
5171: # there is not a nohist_accesscount.db file in a course, which might log accesses from
5172: # anyone in the course for things which are not published resources.
5173: #
5174: # For an author, nohist_accesscount.db ends up having records for other items
5175: # mixed up with the legitimate access counts for the author's published resources.
5176: #
5177: $dom = $env{'request.'.$cid.'.domain'};
5178: $name = $env{'request.'.$cid.'.num'};
5179: }
5180: my $value = $accesshash{$entry};
5181: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
5182: my %temphash=($url => $value);
5183: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
5184: if ($result eq 'ok') {
5185: delete $accesshash{$entry};
5186: }
5187: } else {
5188: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
5189: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
5190: my %temphash=($entry => $accesshash{$entry});
5191: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
5192: delete $accesshash{$entry};
5193: }
5194: }
5195: }
5196: #
5197: # Roles
5198: # Reverse lookup of user roles for course faculty/staff and co-authorship
5199: #
5200: foreach my $entry (keys(%userrolehash)) {
5201: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
5202: split(/\:/,$entry);
5203: if (&put('nohist_userroles',
5204: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
5205: $rudom,$runame) eq 'ok') {
5206: delete $userrolehash{$entry};
5207: }
5208: }
5209: #
5210: # Reverse lookup of domain roles (dc, ad, li, sc, dh, da, au)
5211: #
5212: my %domrolebuffer = ();
5213: foreach my $entry (keys(%domainrolehash)) {
5214: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
5215: if ($domrolebuffer{$rudom}) {
5216: $domrolebuffer{$rudom}.='&'.&escape($entry).
5217: '='.&escape($domainrolehash{$entry});
5218: } else {
5219: $domrolebuffer{$rudom}.=&escape($entry).
5220: '='.&escape($domainrolehash{$entry});
5221: }
5222: delete $domainrolehash{$entry};
5223: }
5224: foreach my $dom (keys(%domrolebuffer)) {
5225: my %servers;
5226: if (defined(&domain($dom,'primary'))) {
5227: my $primary=&domain($dom,'primary');
5228: my $hostname=&hostname($primary);
5229: $servers{$primary} = $hostname;
5230: } else {
5231: %servers = &get_servers($dom,'library');
5232: }
5233: foreach my $tryserver (keys(%servers)) {
5234: if (&reply('domroleput:'.$dom.':'.
5235: $domrolebuffer{$dom},$tryserver) eq 'ok') {
5236: last;
5237: } else {
5238: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
5239: }
5240: }
5241: }
5242: $dumpcount++;
5243: }
5244:
5245: sub courselog {
5246: my $what=shift;
5247: $what=time.':'.$what;
5248: unless ($env{'request.course.id'}) { return ''; }
5249: $coursedombuf{$env{'request.course.id'}}=
5250: $env{'course.'.$env{'request.course.id'}.'.domain'};
5251: $coursenumbuf{$env{'request.course.id'}}=
5252: $env{'course.'.$env{'request.course.id'}.'.num'};
5253: $coursehombuf{$env{'request.course.id'}}=
5254: $env{'course.'.$env{'request.course.id'}.'.home'};
5255: $coursedescrbuf{$env{'request.course.id'}}=
5256: $env{'course.'.$env{'request.course.id'}.'.description'};
5257: $courseinstcodebuf{$env{'request.course.id'}}=
5258: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
5259: $courseownerbuf{$env{'request.course.id'}}=
5260: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
5261: $coursetypebuf{$env{'request.course.id'}}=
5262: $env{'course.'.$env{'request.course.id'}.'.type'};
5263: if (defined $courselogs{$env{'request.course.id'}}) {
5264: $courselogs{$env{'request.course.id'}}.='&'.$what;
5265: } else {
5266: $courselogs{$env{'request.course.id'}}.=$what;
5267: }
5268: if (length($courselogs{$env{'request.course.id'}})>4048) {
5269: &flushcourselogs();
5270: }
5271: }
5272:
5273: sub courseacclog {
5274: my $fnsymb=shift;
5275: unless ($env{'request.course.id'}) { return ''; }
5276: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
5277: if ($fnsymb=~/$LONCAPA::assess_re/) {
5278: $what.=':POST';
5279: # FIXME: Probably ought to escape things....
5280: foreach my $key (keys(%env)) {
5281: if ($key=~/^form\.(.*)/) {
5282: my $formitem = $1;
5283: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
5284: $what.=':'.$formitem.'='.$env{$key};
5285: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
5286: if ($formitem eq 'proctorpassword') {
5287: $what.=':'.$formitem.'=' . '*' x length($env{$key});
5288: } else {
5289: $what.=':'.$formitem.'='.$env{$key};
5290: }
5291: }
5292: }
5293: }
5294: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
5295: # FIXME: We should not be depending on a form parameter that someone
5296: # editing lonsearchcat.pm might change in the future.
5297: if ($env{'form.phase'} eq 'course_search') {
5298: $what.= ':POST';
5299: # FIXME: Probably ought to escape things....
5300: foreach my $element ('courseexp','crsfulltext','crsrelated',
5301: 'crsdiscuss') {
5302: $what.=':'.$element.'='.$env{'form.'.$element};
5303: }
5304: }
5305: }
5306: &courselog($what);
5307: }
5308:
5309: sub countacc {
5310: my $url=&declutter(shift);
5311: return if (! defined($url) || $url eq '');
5312: unless ($env{'request.course.id'}) { return ''; }
5313: #
5314: # Mark that this url was used in this course
5315: #
5316: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
5317: #
5318: # Increase the access count for this resource in this child process
5319: #
5320: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
5321: $accesshash{$key}++;
5322: }
5323:
5324: sub linklog {
5325: my ($from,$to)=@_;
5326: $from=&declutter($from);
5327: $to=&declutter($to);
5328: $accesshash{$from.'___'.$to.'___comefrom'}=1;
5329: $accesshash{$to.'___'.$from.'___goto'}=1;
5330: }
5331:
5332: sub statslog {
5333: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
5334: if ($users<2) { return; }
5335: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
5336: 'course' => $env{'request.course.id'},
5337: 'sections' => '"all"',
5338: 'num_students' => $users,
5339: 'part' => $part,
5340: 'symb' => $symb,
5341: 'mean_tries' => $av_attempts,
5342: 'deg_of_diff' => $degdiff});
5343: foreach my $key (keys(%dynstore)) {
5344: $accesshash{$key}=$dynstore{$key};
5345: }
5346: }
5347:
5348: sub userrolelog {
5349: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
5350: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
5351: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
5352: $userrolehash
5353: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
5354: =$tend.':'.$tstart;
5355: }
5356: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
5357: $userrolehash
5358: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
5359: =$tend.':'.$tstart;
5360: }
5361: if ($trole =~ /^(dc|ad|li|au|dg|sc|dh|da)/ ) {
5362: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
5363: $domainrolehash
5364: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
5365: = $tend.':'.$tstart;
5366: }
5367: }
5368:
5369: sub courserolelog {
5370: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
5371: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
5372: my $cdom = $1;
5373: my $cnum = $2;
5374: my $sec = $3;
5375: my $namespace = 'rolelog';
5376: my %storehash = (
5377: role => $trole,
5378: start => $tstart,
5379: end => $tend,
5380: selfenroll => $selfenroll,
5381: context => $context,
5382: );
5383: if ($trole eq 'gr') {
5384: $namespace = 'groupslog';
5385: $storehash{'group'} = $sec;
5386: } else {
5387: $storehash{'section'} = $sec;
5388: }
5389: &write_log('course',$namespace,\%storehash,$delflag,$username,
5390: $domain,$cnum,$cdom);
5391: if (($trole ne 'st') || ($sec ne '')) {
5392: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
5393: }
5394: }
5395: return;
5396: }
5397:
5398: sub domainrolelog {
5399: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
5400: if ($area =~ m{^/($match_domain)/$}) {
5401: my $cdom = $1;
5402: my $domconfiguser = &get_domainconfiguser($cdom);
5403: my $namespace = 'rolelog';
5404: my %storehash = (
5405: role => $trole,
5406: start => $tstart,
5407: end => $tend,
5408: context => $context,
5409: );
5410: &write_log('domain',$namespace,\%storehash,$delflag,$username,
5411: $domain,$domconfiguser,$cdom);
5412: }
5413: return;
5414:
5415: }
5416:
5417: sub coauthorrolelog {
5418: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
5419: if ($area =~ m{^/($match_domain)/($match_username)$}) {
5420: my $audom = $1;
5421: my $auname = $2;
5422: my $namespace = 'rolelog';
5423: my %storehash = (
5424: role => $trole,
5425: start => $tstart,
5426: end => $tend,
5427: context => $context,
5428: );
5429: &write_log('author',$namespace,\%storehash,$delflag,$username,
5430: $domain,$auname,$audom);
5431: }
5432: return;
5433: }
5434:
5435: sub get_course_adv_roles {
5436: my ($cid,$codes) = @_;
5437: $cid=$env{'request.course.id'} unless (defined($cid));
5438: my %coursehash=&coursedescription($cid);
5439: my $crstype = &Apache::loncommon::course_type($cid);
5440: my %nothide=();
5441: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
5442: if ($user !~ /:/) {
5443: $nothide{join(':',split(/[\@]/,$user))}=1;
5444: } else {
5445: $nothide{$user}=1;
5446: }
5447: }
5448: my @possdoms = ($coursehash{'domain'});
5449: if ($coursehash{'checkforpriv'}) {
5450: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
5451: }
5452: my %returnhash=();
5453: my %dumphash=
5454: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
5455: my $now=time;
5456: my %privileged;
5457: foreach my $entry (keys(%dumphash)) {
5458: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
5459: if (($tstart) && ($tstart<0)) { next; }
5460: if (($tend) && ($tend<$now)) { next; }
5461: if (($tstart) && ($now<$tstart)) { next; }
5462: my ($role,$username,$domain,$section)=split(/\:/,$entry);
5463: if ($username eq '' || $domain eq '') { next; }
5464: if ((&privileged($username,$domain,\@possdoms)) &&
5465: (!$nothide{$username.':'.$domain})) { next; }
5466: if ($role eq 'cr') { next; }
5467: if ($codes) {
5468: if ($section) { $role .= ':'.$section; }
5469: if ($returnhash{$role}) {
5470: $returnhash{$role}.=','.$username.':'.$domain;
5471: } else {
5472: $returnhash{$role}=$username.':'.$domain;
5473: }
5474: } else {
5475: my $key=&plaintext($role,$crstype);
5476: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
5477: if ($returnhash{$key}) {
5478: $returnhash{$key}.=','.$username.':'.$domain;
5479: } else {
5480: $returnhash{$key}=$username.':'.$domain;
5481: }
5482: }
5483: }
5484: return %returnhash;
5485: }
5486:
5487: sub get_my_roles {
5488: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
5489: unless (defined($uname)) { $uname=$env{'user.name'}; }
5490: unless (defined($udom)) { $udom=$env{'user.domain'}; }
5491: my (%dumphash,%nothide);
5492: if ($context eq 'userroles') {
5493: %dumphash = &dump('roles',$udom,$uname);
5494: } else {
5495: %dumphash = &dump('nohist_userroles',$udom,$uname);
5496: if ($hidepriv) {
5497: my %coursehash=&coursedescription($udom.'_'.$uname);
5498: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
5499: if ($user !~ /:/) {
5500: $nothide{join(':',split(/[\@]/,$user))} = 1;
5501: } else {
5502: $nothide{$user} = 1;
5503: }
5504: }
5505: }
5506: }
5507: my %returnhash=();
5508: my $now=time;
5509: my %privileged;
5510: foreach my $entry (keys(%dumphash)) {
5511: my ($role,$tend,$tstart);
5512: if ($context eq 'userroles') {
5513: next if ($entry =~ /^rolesdef/);
5514: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
5515: } else {
5516: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
5517: }
5518: if (($tstart) && ($tstart<0)) { next; }
5519: my $status = 'active';
5520: if (($tend) && ($tend<=$now)) {
5521: $status = 'previous';
5522: }
5523: if (($tstart) && ($now<$tstart)) {
5524: $status = 'future';
5525: }
5526: if (ref($types) eq 'ARRAY') {
5527: if (!grep(/^\Q$status\E$/,@{$types})) {
5528: next;
5529: }
5530: } else {
5531: if ($status ne 'active') {
5532: next;
5533: }
5534: }
5535: my ($rolecode,$username,$domain,$section,$area);
5536: if ($context eq 'userroles') {
5537: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
5538: (undef,$domain,$username,$section) = split(/\//,$area);
5539: } else {
5540: ($role,$username,$domain,$section) = split(/\:/,$entry);
5541: }
5542: if (ref($roledoms) eq 'ARRAY') {
5543: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
5544: next;
5545: }
5546: }
5547: if (ref($roles) eq 'ARRAY') {
5548: if (!grep(/^\Q$role\E$/,@{$roles})) {
5549: if ($role =~ /^cr\//) {
5550: if (!grep(/^cr$/,@{$roles})) {
5551: next;
5552: }
5553: } elsif ($role =~ /^gr\//) {
5554: if (!grep(/^gr$/,@{$roles})) {
5555: next;
5556: }
5557: } else {
5558: next;
5559: }
5560: }
5561: }
5562: if ($hidepriv) {
5563: my @privroles = ('dc','su');
5564: if ($context eq 'userroles') {
5565: next if (grep(/^\Q$role\E$/,@privroles));
5566: } else {
5567: my $possdoms = [$domain];
5568: if (ref($roledoms) eq 'ARRAY') {
5569: push(@{$possdoms},@{$roledoms});
5570: }
5571: if (&privileged($username,$domain,$possdoms,\@privroles)) {
5572: if (!$nothide{$username.':'.$domain}) {
5573: next;
5574: }
5575: }
5576: }
5577: }
5578: if ($withsec) {
5579: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
5580: $tstart.':'.$tend;
5581: } else {
5582: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
5583: }
5584: }
5585: return %returnhash;
5586: }
5587:
5588: sub get_all_adhocroles {
5589: my ($dom) = @_;
5590: my @roles_by_num = ();
5591: my %domdefaults = &get_domain_defaults($dom);
5592: my (%description,%access_in_dom,%access_info);
5593: if (ref($domdefaults{'adhocroles'}) eq 'HASH') {
5594: my $count = 0;
5595: my %domcurrent = %{$domdefaults{'adhocroles'}};
5596: my %ordered;
5597: foreach my $role (sort(keys(%domcurrent))) {
5598: my ($order,$desc,$access_in_dom);
5599: if (ref($domcurrent{$role}) eq 'HASH') {
5600: $order = $domcurrent{$role}{'order'};
5601: $desc = $domcurrent{$role}{'desc'};
5602: $access_in_dom{$role} = $domcurrent{$role}{'access'};
5603: $access_info{$role} = $domcurrent{$role}{$access_in_dom{$role}};
5604: }
5605: if ($order eq '') {
5606: $order = $count;
5607: }
5608: $ordered{$order} = $role;
5609: if ($desc ne '') {
5610: $description{$role} = $desc;
5611: } else {
5612: $description{$role}= $role;
5613: }
5614: $count++;
5615: }
5616: foreach my $item (sort {$a <=> $b } (keys(%ordered))) {
5617: push(@roles_by_num,$ordered{$item});
5618: }
5619: }
5620: return (\@roles_by_num,\%description,\%access_in_dom,\%access_info);
5621: }
5622:
5623: sub get_my_adhocroles {
5624: my ($cid,$checkreg) = @_;
5625: my ($cdom,$cnum,%info,@possroles,$description,$roles_by_num);
5626: if ($env{'request.course.id'} eq $cid) {
5627: $cdom = $env{'course.'.$cid.'.domain'};
5628: $cnum = $env{'course.'.$cid.'.num'};
5629: $info{'internal.coursecode'} = $env{'course.'.$cid.'.internal.coursecode'};
5630: } elsif ($cid =~ /^($match_domain)_($match_courseid)$/) {
5631: $cdom = $1;
5632: $cnum = $2;
5633: %info = &get('environment',['internal.coursecode'],
5634: $cdom,$cnum);
5635: }
5636: if (($info{'internal.coursecode'} ne '') && ($checkreg)) {
5637: my $user = $env{'user.name'}.':'.$env{'user.domain'};
5638: my %rosterhash = &get('classlist',[$user],$cdom,$cnum);
5639: if ($rosterhash{$user} ne '') {
5640: my $type = (split(/:/,$rosterhash{$user}))[5];
5641: return ([],{}) if ($type eq 'auto');
5642: }
5643: }
5644: if (($cdom ne '') && ($cnum ne '')) {
5645: if (($env{"user.role.dh./$cdom/"}) || ($env{"user.role.da./$cdom/"})) {
5646: my $then=$env{'user.login.time'};
5647: my $update=$env{'user.update.time'};
5648: if (!$update) {
5649: $update = $then;
5650: }
5651: my @liveroles;
5652: foreach my $role ('dh','da') {
5653: if ($env{"user.role.$role./$cdom/"}) {
5654: my ($tstart,$tend)=split(/\./,$env{"user.role.$role./$cdom/"});
5655: my $limit = $update;
5656: if ($env{'request.role'} eq "$role./$cdom/") {
5657: $limit = $then;
5658: }
5659: my $activerole = 1;
5660: if ($tstart && $tstart>$limit) { $activerole = 0; }
5661: if ($tend && $tend <$limit) { $activerole = 0; }
5662: if ($activerole) {
5663: push(@liveroles,$role);
5664: }
5665: }
5666: }
5667: if (@liveroles) {
5668: if (&homeserver($cnum,$cdom) ne 'no_host') {
5669: my ($accessref,$accessinfo,%access_in_dom);
5670: ($roles_by_num,$description,$accessref,$accessinfo) = &get_all_adhocroles($cdom);
5671: if (ref($roles_by_num) eq 'ARRAY') {
5672: if (@{$roles_by_num}) {
5673: my %settings;
5674: if ($env{'request.course.id'} eq $cid) {
5675: foreach my $envkey (keys(%env)) {
5676: if ($envkey =~ /^\Qcourse.$cid.\E(internal\.adhoc.+)$/) {
5677: $settings{$1} = $env{$envkey};
5678: }
5679: }
5680: } else {
5681: %settings = &dump('environment',$cdom,$cnum,'internal\.adhoc');
5682: }
5683: my %setincrs;
5684: if ($settings{'internal.adhocaccess'}) {
5685: map { $setincrs{$_} = 1; } split(/,/,$settings{'internal.adhocaccess'});
5686: }
5687: my @statuses;
5688: if ($env{'environment.inststatus'}) {
5689: @statuses = split(/,/,$env{'environment.inststatus'});
5690: }
5691: my $user = $env{'user.name'}.':'.$env{'user.domain'};
5692: if (ref($accessref) eq 'HASH') {
5693: %access_in_dom = %{$accessref};
5694: }
5695: foreach my $role (@{$roles_by_num}) {
5696: my ($curraccess,@okstatus,@personnel);
5697: if ($setincrs{$role}) {
5698: ($curraccess,my $rest) = split(/=/,$settings{'internal.adhoc.'.$role});
5699: if ($curraccess eq 'status') {
5700: @okstatus = split(/\&/,$rest);
5701: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5702: @personnel = split(/\&/,$rest);
5703: }
5704: } else {
5705: $curraccess = $access_in_dom{$role};
5706: if (ref($accessinfo) eq 'HASH') {
5707: if ($curraccess eq 'status') {
5708: if (ref($accessinfo->{$role}) eq 'ARRAY') {
5709: @okstatus = @{$accessinfo->{$role}};
5710: }
5711: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5712: if (ref($accessinfo->{$role}) eq 'ARRAY') {
5713: @personnel = @{$accessinfo->{$role}};
5714: }
5715: }
5716: }
5717: }
5718: if ($curraccess eq 'none') {
5719: next;
5720: } elsif ($curraccess eq 'all') {
5721: push(@possroles,$role);
5722: } elsif ($curraccess eq 'dh') {
5723: if (grep(/^dh$/,@liveroles)) {
5724: push(@possroles,$role);
5725: } else {
5726: next;
5727: }
5728: } elsif ($curraccess eq 'da') {
5729: if (grep(/^da$/,@liveroles)) {
5730: push(@possroles,$role);
5731: } else {
5732: next;
5733: }
5734: } elsif ($curraccess eq 'status') {
5735: if (@okstatus) {
5736: if (!@statuses) {
5737: if (grep(/^default$/,@okstatus)) {
5738: push(@possroles,$role);
5739: }
5740: } else {
5741: foreach my $status (@okstatus) {
5742: if (grep(/^\Q$status\E$/,@statuses)) {
5743: push(@possroles,$role);
5744: last;
5745: }
5746: }
5747: }
5748: }
5749: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5750: if (grep(/^\Q$user\E$/,@personnel)) {
5751: if ($curraccess eq 'exc') {
5752: push(@possroles,$role);
5753: }
5754: } elsif ($curraccess eq 'inc') {
5755: push(@possroles,$role);
5756: }
5757: }
5758: }
5759: }
5760: }
5761: }
5762: }
5763: }
5764: }
5765: unless (ref($description) eq 'HASH') {
5766: if (ref($roles_by_num) eq 'ARRAY') {
5767: my %desc;
5768: map { $desc{$_} = $_; } (@{$roles_by_num});
5769: $description = \%desc;
5770: } else {
5771: $description = {};
5772: }
5773: }
5774: return (\@possroles,$description);
5775: }
5776:
5777: # ----------------------------------------------------- Frontpage Announcements
5778: #
5779: #
5780:
5781: sub postannounce {
5782: my ($server,$text)=@_;
5783: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
5784: unless ($text=~/\w/) { $text=''; }
5785: return &reply('setannounce:'.&escape($text),$server);
5786: }
5787:
5788: sub getannounce {
5789:
5790: if (open(my $fh,"<",$perlvar{'lonDocRoot'}.'/announcement.txt')) {
5791: my $announcement='';
5792: while (my $line = <$fh>) { $announcement .= $line; }
5793: close($fh);
5794: if ($announcement=~/\w/) {
5795: return
5796: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
5797: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
5798: } else {
5799: return '';
5800: }
5801: } else {
5802: return '';
5803: }
5804: }
5805:
5806: # ---------------------------------------------------------- Course ID routines
5807: # Deal with domain's nohist_courseid.db files
5808: #
5809:
5810: sub courseidput {
5811: my ($domain,$storehash,$coursehome,$caller) = @_;
5812: return unless (ref($storehash) eq 'HASH');
5813: my $outcome;
5814: if ($caller eq 'timeonly') {
5815: my $cids = '';
5816: foreach my $item (keys(%$storehash)) {
5817: $cids.=&escape($item).'&';
5818: }
5819: $cids=~s/\&$//;
5820: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
5821: $coursehome);
5822: } else {
5823: my $items = '';
5824: foreach my $item (keys(%$storehash)) {
5825: $items.= &escape($item).'='.
5826: &freeze_escape($$storehash{$item}).'&';
5827: }
5828: $items=~s/\&$//;
5829: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
5830: $coursehome);
5831: }
5832: if ($outcome eq 'unknown_cmd') {
5833: my $what;
5834: foreach my $cid (keys(%$storehash)) {
5835: $what .= &escape($cid).'=';
5836: foreach my $item ('description','inst_code','owner','type') {
5837: $what .= &escape($storehash->{$cid}{$item}).':';
5838: }
5839: $what =~ s/\:$/&/;
5840: }
5841: $what =~ s/\&$//;
5842: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
5843: } else {
5844: return $outcome;
5845: }
5846: }
5847:
5848: sub courseiddump {
5849: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
5850: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
5851: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
5852: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner,
5853: $hasuniquecode,$reqcrsdom,$reqinstcode)=@_;
5854: my $as_hash = 1;
5855: my %returnhash;
5856: if (!$domfilter) { $domfilter=''; }
5857: my %libserv = &all_library();
5858: foreach my $tryserver (keys(%libserv)) {
5859: if ( ( $hostidflag == 1
5860: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
5861: || (!defined($hostidflag)) ) {
5862:
5863: if (($domfilter eq '') ||
5864: (&host_domain($tryserver) eq $domfilter)) {
5865: my $rep;
5866: if (grep { $_ eq $tryserver } current_machine_ids()) {
5867: $rep = LONCAPA::Lond::dump_course_id_handler(
5868: join(":", (&host_domain($tryserver), $sincefilter,
5869: &escape($descfilter), &escape($instcodefilter),
5870: &escape($ownerfilter), &escape($coursefilter),
5871: &escape($typefilter), &escape($regexp_ok),
5872: $as_hash, &escape($selfenrollonly),
5873: &escape($catfilter), $showhidden, $caller,
5874: &escape($cloner), &escape($cc_clone), $cloneonly,
5875: &escape($createdbefore), &escape($createdafter),
5876: &escape($creationcontext),$domcloner,$hasuniquecode,
5877: $reqcrsdom,&escape($reqinstcode))));
5878: } else {
5879: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
5880: $sincefilter.':'.&escape($descfilter).':'.
5881: &escape($instcodefilter).':'.&escape($ownerfilter).
5882: ':'.&escape($coursefilter).':'.&escape($typefilter).
5883: ':'.&escape($regexp_ok).':'.$as_hash.':'.
5884: &escape($selfenrollonly).':'.&escape($catfilter).':'.
5885: $showhidden.':'.$caller.':'.&escape($cloner).':'.
5886: &escape($cc_clone).':'.$cloneonly.':'.
5887: &escape($createdbefore).':'.&escape($createdafter).':'.
5888: &escape($creationcontext).':'.$domcloner.':'.$hasuniquecode.
5889: ':'.$reqcrsdom.':'.&escape($reqinstcode),$tryserver);
5890: }
5891:
5892: my @pairs=split(/\&/,$rep);
5893: foreach my $item (@pairs) {
5894: my ($key,$value)=split(/\=/,$item,2);
5895: $key = &unescape($key);
5896: next if ($key =~ /^error: 2 /);
5897: my $result = &thaw_unescape($value);
5898: if (ref($result) eq 'HASH') {
5899: $returnhash{$key}=$result;
5900: } else {
5901: my @responses = split(/:/,$value);
5902: my @items = ('description','inst_code','owner','type');
5903: for (my $i=0; $i<@responses; $i++) {
5904: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
5905: }
5906: }
5907: }
5908: }
5909: }
5910: }
5911: return %returnhash;
5912: }
5913:
5914: sub courselastaccess {
5915: my ($cdom,$cnum,$hostidref) = @_;
5916: my %returnhash;
5917: if ($cdom && $cnum) {
5918: my $chome = &homeserver($cnum,$cdom);
5919: if ($chome ne 'no_host') {
5920: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
5921: &extract_lastaccess(\%returnhash,$rep);
5922: }
5923: } else {
5924: if (!$cdom) { $cdom=''; }
5925: my %libserv = &all_library();
5926: foreach my $tryserver (keys(%libserv)) {
5927: if (ref($hostidref) eq 'ARRAY') {
5928: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
5929: }
5930: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
5931: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
5932: &extract_lastaccess(\%returnhash,$rep);
5933: }
5934: }
5935: }
5936: return %returnhash;
5937: }
5938:
5939: sub extract_lastaccess {
5940: my ($returnhash,$rep) = @_;
5941: if (ref($returnhash) eq 'HASH') {
5942: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
5943: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
5944: $rep eq '') {
5945: my @pairs=split(/\&/,$rep);
5946: foreach my $item (@pairs) {
5947: my ($key,$value)=split(/\=/,$item,2);
5948: $key = &unescape($key);
5949: next if ($key =~ /^error: 2 /);
5950: $returnhash->{$key} = &thaw_unescape($value);
5951: }
5952: }
5953: }
5954: return;
5955: }
5956:
5957: # ---------------------------------------------------------- DC e-mail
5958:
5959: sub dcmailput {
5960: my ($domain,$msgid,$message,$server)=@_;
5961: my $status = &critical(
5962: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
5963: &escape($message),$server);
5964: return $status;
5965: }
5966:
5967: sub dcmaildump {
5968: my ($dom,$startdate,$enddate,$senders) = @_;
5969: my %returnhash=();
5970:
5971: if (defined(&domain($dom,'primary'))) {
5972: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
5973: &escape($enddate).':';
5974: my @esc_senders=map { &escape($_)} @$senders;
5975: $cmd.=&escape(join('&',@esc_senders));
5976: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
5977: my ($key,$value) = split(/\=/,$line,2);
5978: if (($key) && ($value)) {
5979: $returnhash{&unescape($key)} = &unescape($value);
5980: }
5981: }
5982: }
5983: return %returnhash;
5984: }
5985: # ---------------------------------------------------------- Domain roles
5986:
5987: sub get_domain_roles {
5988: my ($dom,$roles,$startdate,$enddate)=@_;
5989: if ((!defined($startdate)) || ($startdate eq '')) {
5990: $startdate = '.';
5991: }
5992: if ((!defined($enddate)) || ($enddate eq '')) {
5993: $enddate = '.';
5994: }
5995: my $rolelist;
5996: if (ref($roles) eq 'ARRAY') {
5997: $rolelist = join('&',@{$roles});
5998: }
5999: my %personnel = ();
6000:
6001: my %servers = &get_servers($dom,'library');
6002: foreach my $tryserver (keys(%servers)) {
6003: %{$personnel{$tryserver}}=();
6004: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
6005: &escape($startdate).':'.
6006: &escape($enddate).':'.
6007: &escape($rolelist), $tryserver))) {
6008: my ($key,$value) = split(/\=/,$line,2);
6009: if (($key) && ($value)) {
6010: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
6011: }
6012: }
6013: }
6014: return %personnel;
6015: }
6016:
6017: sub get_active_domroles {
6018: my ($dom,$roles) = @_;
6019: return () unless (ref($roles) eq 'ARRAY');
6020: my $now = time;
6021: my %dompersonnel = &get_domain_roles($dom,$roles,$now,$now);
6022: my %domroles;
6023: foreach my $server (keys(%dompersonnel)) {
6024: foreach my $user (sort(keys(%{$dompersonnel{$server}}))) {
6025: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,$user);
6026: $domroles{$uname.':'.$udom} = $dompersonnel{$server}{$user};
6027: }
6028: }
6029: return %domroles;
6030: }
6031:
6032: # ----------------------------------------------------------- Interval timing
6033:
6034: {
6035: # Caches needed for speedup of navmaps
6036: # We don't want to cache this for very long at all (5 seconds at most)
6037: #
6038: # The user for whom we cache
6039: my $cachedkey='';
6040: # The cached times for this user
6041: my %cachedtimes=();
6042: # When this was last done
6043: my $cachedtime='';
6044:
6045: sub load_all_first_access {
6046: my ($uname,$udom,$ignorecache)=@_;
6047: if (($cachedkey eq $uname.':'.$udom) &&
6048: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'}) &&
6049: (!$ignorecache)) {
6050: return;
6051: }
6052: $cachedtime=time;
6053: $cachedkey=$uname.':'.$udom;
6054: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
6055: }
6056:
6057: sub get_first_access {
6058: my ($type,$argsymb,$argmap,$ignorecache)=@_;
6059: my ($symb,$courseid,$udom,$uname)=&whichuser();
6060: if ($argsymb) { $symb=$argsymb; }
6061: my ($map,$id,$res)=&decode_symb($symb);
6062: if ($argmap) { $map = $argmap; }
6063: if ($type eq 'course') {
6064: $res='course';
6065: } elsif ($type eq 'map') {
6066: $res=&symbread($map);
6067: } else {
6068: $res=$symb;
6069: }
6070: &load_all_first_access($uname,$udom,$ignorecache);
6071: return $cachedtimes{"$courseid\0$res"};
6072: }
6073:
6074: sub set_first_access {
6075: my ($type,$interval)=@_;
6076: my ($symb,$courseid,$udom,$uname)=&whichuser();
6077: my ($map,$id,$res)=&decode_symb($symb);
6078: if ($type eq 'course') {
6079: $res='course';
6080: } elsif ($type eq 'map') {
6081: $res=&symbread($map);
6082: } else {
6083: $res=$symb;
6084: }
6085: $cachedkey='';
6086: my $firstaccess=&get_first_access($type,$symb,$map);
6087: if ($firstaccess) {
6088: &logthis("First access time already set ($firstaccess) when attempting ".
6089: "to set new value (type: $type, extent: $res) for $uname:$udom ".
6090: "in $courseid");
6091: return 'already_set';
6092: } else {
6093: my $start = time;
6094: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
6095: $udom,$uname);
6096: if ($putres eq 'ok') {
6097: &put('timerinterval',{"$courseid\0$res"=>$interval},
6098: $udom,$uname);
6099: &appenv(
6100: {
6101: 'course.'.$courseid.'.firstaccess.'.$res => $start,
6102: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
6103: }
6104: );
6105: if (($cachedtime) && (abs($start-$cachedtime) < 5)) {
6106: $cachedtimes{"$courseid\0$res"} = $start;
6107: }
6108: } elsif ($putres ne 'refused') {
6109: &logthis("Result: $putres when attempting to set first access time ".
6110: "(type: $type, extent: $res) for $uname:$udom in $courseid");
6111: }
6112: return $putres;
6113: }
6114: return 'already_set';
6115: }
6116: }
6117:
6118: # --------------------------------------------- Set Expire Date for Spreadsheet
6119:
6120: sub expirespread {
6121: my ($uname,$udom,$stype,$usymb)=@_;
6122: my $cid=$env{'request.course.id'};
6123: if ($cid) {
6124: my $now=time;
6125: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
6126: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
6127: $env{'course.'.$cid.'.num'}.
6128: ':nohist_expirationdates:'.
6129: &escape($key).'='.$now,
6130: $env{'course.'.$cid.'.home'})
6131: }
6132: return 'ok';
6133: }
6134:
6135: # ----------------------------------------------------- Devalidate Spreadsheets
6136:
6137: sub devalidate {
6138: my ($symb,$uname,$udom)=@_;
6139: my $cid=$env{'request.course.id'};
6140: if ($cid) {
6141: # delete the stored spreadsheets for
6142: # - the student level sheet of this user in course's homespace
6143: # - the assessment level sheet for this resource
6144: # for this user in user's homespace
6145: # - current conditional state info
6146: my $key=$uname.':'.$udom.':';
6147: my $status=
6148: &del('nohist_calculatedsheets',
6149: [$key.'studentcalc:'],
6150: $env{'course.'.$cid.'.domain'},
6151: $env{'course.'.$cid.'.num'})
6152: .' '.
6153: &del('nohist_calculatedsheets_'.$cid,
6154: [$key.'assesscalc:'.$symb],$udom,$uname);
6155: unless ($status eq 'ok ok') {
6156: &logthis('Could not devalidate spreadsheet '.
6157: $uname.' at '.$udom.' for '.
6158: $symb.': '.$status);
6159: }
6160: &delenv('user.state.'.$cid);
6161: }
6162: }
6163:
6164: sub get_scalar {
6165: my ($string,$end) = @_;
6166: my $value;
6167: if ($$string =~ s/^([^&]*?)($end)/$2/) {
6168: $value = $1;
6169: } elsif ($$string =~ s/^([^&]*?)&//) {
6170: $value = $1;
6171: }
6172: return &unescape($value);
6173: }
6174:
6175: sub array2str {
6176: my (@array) = @_;
6177: my $result=&arrayref2str(\@array);
6178: $result=~s/^__ARRAY_REF__//;
6179: $result=~s/__END_ARRAY_REF__$//;
6180: return $result;
6181: }
6182:
6183: sub arrayref2str {
6184: my ($arrayref) = @_;
6185: my $result='__ARRAY_REF__';
6186: foreach my $elem (@$arrayref) {
6187: if(ref($elem) eq 'ARRAY') {
6188: $result.=&arrayref2str($elem).'&';
6189: } elsif(ref($elem) eq 'HASH') {
6190: $result.=&hashref2str($elem).'&';
6191: } elsif(ref($elem)) {
6192: #print("Got a ref of ".(ref($elem))." skipping.");
6193: } else {
6194: $result.=&escape($elem).'&';
6195: }
6196: }
6197: $result=~s/\&$//;
6198: $result .= '__END_ARRAY_REF__';
6199: return $result;
6200: }
6201:
6202: sub hash2str {
6203: my (%hash) = @_;
6204: my $result=&hashref2str(\%hash);
6205: $result=~s/^__HASH_REF__//;
6206: $result=~s/__END_HASH_REF__$//;
6207: return $result;
6208: }
6209:
6210: sub hashref2str {
6211: my ($hashref)=@_;
6212: my $result='__HASH_REF__';
6213: foreach my $key (sort(keys(%$hashref))) {
6214: if (ref($key) eq 'ARRAY') {
6215: $result.=&arrayref2str($key).'=';
6216: } elsif (ref($key) eq 'HASH') {
6217: $result.=&hashref2str($key).'=';
6218: } elsif (ref($key)) {
6219: $result.='=';
6220: #print("Got a ref of ".(ref($key))." skipping.");
6221: } else {
6222: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
6223: }
6224:
6225: if(ref($hashref->{$key}) eq 'ARRAY') {
6226: $result.=&arrayref2str($hashref->{$key}).'&';
6227: } elsif(ref($hashref->{$key}) eq 'HASH') {
6228: $result.=&hashref2str($hashref->{$key}).'&';
6229: } elsif(ref($hashref->{$key})) {
6230: $result.='&';
6231: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
6232: } else {
6233: $result.=&escape($hashref->{$key}).'&';
6234: }
6235: }
6236: $result=~s/\&$//;
6237: $result .= '__END_HASH_REF__';
6238: return $result;
6239: }
6240:
6241: sub str2hash {
6242: my ($string)=@_;
6243: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
6244: return %$hash;
6245: }
6246:
6247: sub str2hashref {
6248: my ($string) = @_;
6249:
6250: my %hash;
6251:
6252: if($string !~ /^__HASH_REF__/) {
6253: if (! ($string eq '' || !defined($string))) {
6254: $hash{'error'}='Not hash reference';
6255: }
6256: return (\%hash, $string);
6257: }
6258:
6259: $string =~ s/^__HASH_REF__//;
6260:
6261: while($string !~ /^__END_HASH_REF__/) {
6262: #key
6263: my $key='';
6264: if($string =~ /^__HASH_REF__/) {
6265: ($key, $string)=&str2hashref($string);
6266: if(defined($key->{'error'})) {
6267: $hash{'error'}='Bad data';
6268: return (\%hash, $string);
6269: }
6270: } elsif($string =~ /^__ARRAY_REF__/) {
6271: ($key, $string)=&str2arrayref($string);
6272: if($key->[0] eq 'Array reference error') {
6273: $hash{'error'}='Bad data';
6274: return (\%hash, $string);
6275: }
6276: } else {
6277: $string =~ s/^(.*?)=//;
6278: $key=&unescape($1);
6279: }
6280: $string =~ s/^=//;
6281:
6282: #value
6283: my $value='';
6284: if($string =~ /^__HASH_REF__/) {
6285: ($value, $string)=&str2hashref($string);
6286: if(defined($value->{'error'})) {
6287: $hash{'error'}='Bad data';
6288: return (\%hash, $string);
6289: }
6290: } elsif($string =~ /^__ARRAY_REF__/) {
6291: ($value, $string)=&str2arrayref($string);
6292: if($value->[0] eq 'Array reference error') {
6293: $hash{'error'}='Bad data';
6294: return (\%hash, $string);
6295: }
6296: } else {
6297: $value=&get_scalar(\$string,'__END_HASH_REF__');
6298: }
6299: $string =~ s/^&//;
6300:
6301: $hash{$key}=$value;
6302: }
6303:
6304: $string =~ s/^__END_HASH_REF__//;
6305:
6306: return (\%hash, $string);
6307: }
6308:
6309: sub str2array {
6310: my ($string)=@_;
6311: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
6312: return @$array;
6313: }
6314:
6315: sub str2arrayref {
6316: my ($string) = @_;
6317: my @array;
6318:
6319: if($string !~ /^__ARRAY_REF__/) {
6320: if (! ($string eq '' || !defined($string))) {
6321: $array[0]='Array reference error';
6322: }
6323: return (\@array, $string);
6324: }
6325:
6326: $string =~ s/^__ARRAY_REF__//;
6327:
6328: while($string !~ /^__END_ARRAY_REF__/) {
6329: my $value='';
6330: if($string =~ /^__HASH_REF__/) {
6331: ($value, $string)=&str2hashref($string);
6332: if(defined($value->{'error'})) {
6333: $array[0] ='Array reference error';
6334: return (\@array, $string);
6335: }
6336: } elsif($string =~ /^__ARRAY_REF__/) {
6337: ($value, $string)=&str2arrayref($string);
6338: if($value->[0] eq 'Array reference error') {
6339: $array[0] ='Array reference error';
6340: return (\@array, $string);
6341: }
6342: } else {
6343: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
6344: }
6345: $string =~ s/^&//;
6346:
6347: push(@array, $value);
6348: }
6349:
6350: $string =~ s/^__END_ARRAY_REF__//;
6351:
6352: return (\@array, $string);
6353: }
6354:
6355: # -------------------------------------------------------------------Temp Store
6356:
6357: sub tmpreset {
6358: my ($symb,$namespace,$domain,$stuname) = @_;
6359: if (!$symb) {
6360: $symb=&symbread();
6361: if (!$symb) { $symb= $env{'request.url'}; }
6362: }
6363: $symb=escape($symb);
6364:
6365: if (!$namespace) { $namespace=$env{'request.state'}; }
6366: $namespace=~s/\//\_/g;
6367: $namespace=~s/\W//g;
6368:
6369: if (!$domain) { $domain=$env{'user.domain'}; }
6370: if (!$stuname) { $stuname=$env{'user.name'}; }
6371: if ($domain eq 'public' && $stuname eq 'public') {
6372: $stuname=&get_requestor_ip();
6373: }
6374: my $path=LONCAPA::tempdir();
6375: my %hash;
6376: if (tie(%hash,'GDBM_File',
6377: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
6378: &GDBM_WRCREAT(),0640)) {
6379: foreach my $key (keys(%hash)) {
6380: if ($key=~ /:$symb/) {
6381: delete($hash{$key});
6382: }
6383: }
6384: }
6385: }
6386:
6387: sub tmpstore {
6388: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
6389:
6390: if (!$symb) {
6391: $symb=&symbread();
6392: if (!$symb) { $symb= $env{'request.url'}; }
6393: }
6394: $symb=escape($symb);
6395:
6396: if (!$namespace) {
6397: # I don't think we would ever want to store this for a course.
6398: # it seems this will only be used if we don't have a course.
6399: #$namespace=$env{'request.course.id'};
6400: #if (!$namespace) {
6401: $namespace=$env{'request.state'};
6402: #}
6403: }
6404: $namespace=~s/\//\_/g;
6405: $namespace=~s/\W//g;
6406: if (!$domain) { $domain=$env{'user.domain'}; }
6407: if (!$stuname) { $stuname=$env{'user.name'}; }
6408: if ($domain eq 'public' && $stuname eq 'public') {
6409: $stuname=&get_requestor_ip();
6410: }
6411: my $now=time;
6412: my %hash;
6413: my $path=LONCAPA::tempdir();
6414: if (tie(%hash,'GDBM_File',
6415: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
6416: &GDBM_WRCREAT(),0640)) {
6417: $hash{"version:$symb"}++;
6418: my $version=$hash{"version:$symb"};
6419: my $allkeys='';
6420: foreach my $key (keys(%$storehash)) {
6421: $allkeys.=$key.':';
6422: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
6423: }
6424: $hash{"$version:$symb:timestamp"}=$now;
6425: $allkeys.='timestamp';
6426: $hash{"$version:keys:$symb"}=$allkeys;
6427: if (untie(%hash)) {
6428: return 'ok';
6429: } else {
6430: return "error:$!";
6431: }
6432: } else {
6433: return "error:$!";
6434: }
6435: }
6436:
6437: # -----------------------------------------------------------------Temp Restore
6438:
6439: sub tmprestore {
6440: my ($symb,$namespace,$domain,$stuname) = @_;
6441:
6442: if (!$symb) {
6443: $symb=&symbread();
6444: if (!$symb) { $symb= $env{'request.url'}; }
6445: }
6446: $symb=escape($symb);
6447:
6448: if (!$namespace) { $namespace=$env{'request.state'}; }
6449:
6450: if (!$domain) { $domain=$env{'user.domain'}; }
6451: if (!$stuname) { $stuname=$env{'user.name'}; }
6452: if ($domain eq 'public' && $stuname eq 'public') {
6453: $stuname=&get_requestor_ip();
6454: }
6455: my %returnhash;
6456: $namespace=~s/\//\_/g;
6457: $namespace=~s/\W//g;
6458: my %hash;
6459: my $path=LONCAPA::tempdir();
6460: if (tie(%hash,'GDBM_File',
6461: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
6462: &GDBM_READER(),0640)) {
6463: my $version=$hash{"version:$symb"};
6464: $returnhash{'version'}=$version;
6465: my $scope;
6466: for ($scope=1;$scope<=$version;$scope++) {
6467: my $vkeys=$hash{"$scope:keys:$symb"};
6468: my @keys=split(/:/,$vkeys);
6469: my $key;
6470: $returnhash{"$scope:keys"}=$vkeys;
6471: foreach $key (@keys) {
6472: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
6473: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
6474: }
6475: }
6476: if (!(untie(%hash))) {
6477: return "error:$!";
6478: }
6479: } else {
6480: return "error:$!";
6481: }
6482: return %returnhash;
6483: }
6484:
6485: # ----------------------------------------------------------------------- Store
6486:
6487: sub store {
6488: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
6489: my $home='';
6490:
6491: if ($stuname) { $home=&homeserver($stuname,$domain); }
6492:
6493: $symb=&symbclean($symb);
6494: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
6495:
6496: if (!$domain) { $domain=$env{'user.domain'}; }
6497: if (!$stuname) { $stuname=$env{'user.name'}; }
6498:
6499: &devalidate($symb,$stuname,$domain);
6500:
6501: $symb=escape($symb);
6502: if (!$namespace) {
6503: unless ($namespace=$env{'request.course.id'}) {
6504: return '';
6505: }
6506: }
6507: if (!$home) { $home=$env{'user.home'}; }
6508:
6509: $$storehash{'ip'}=&get_requestor_ip();
6510: $$storehash{'host'}=$perlvar{'lonHostID'};
6511:
6512: my $namevalue='';
6513: foreach my $key (keys(%$storehash)) {
6514: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6515: }
6516: $namevalue=~s/\&$//;
6517: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
6518: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
6519: }
6520:
6521: # -------------------------------------------------------------- Critical Store
6522:
6523: sub cstore {
6524: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
6525: my $home='';
6526:
6527: if ($stuname) { $home=&homeserver($stuname,$domain); }
6528:
6529: $symb=&symbclean($symb);
6530: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
6531:
6532: if (!$domain) { $domain=$env{'user.domain'}; }
6533: if (!$stuname) { $stuname=$env{'user.name'}; }
6534:
6535: &devalidate($symb,$stuname,$domain);
6536:
6537: $symb=escape($symb);
6538: if (!$namespace) {
6539: unless ($namespace=$env{'request.course.id'}) {
6540: return '';
6541: }
6542: }
6543: if (!$home) { $home=$env{'user.home'}; }
6544:
6545: $$storehash{'ip'}=&get_requestor_ip();
6546: $$storehash{'host'}=$perlvar{'lonHostID'};
6547:
6548: my $namevalue='';
6549: foreach my $key (keys(%$storehash)) {
6550: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6551: }
6552: $namevalue=~s/\&$//;
6553: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
6554: return critical
6555: ("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
6556: }
6557:
6558: # --------------------------------------------------------------------- Restore
6559:
6560: sub restore {
6561: my ($symb,$namespace,$domain,$stuname) = @_;
6562: my $home='';
6563:
6564: if ($stuname) { $home=&homeserver($stuname,$domain); }
6565:
6566: if (!$symb) {
6567: return if ($namespace eq 'courserequests');
6568: unless ($symb=escape(&symbread())) { return ''; }
6569: } else {
6570: unless ($namespace eq 'courserequests') {
6571: $symb=&escape(&symbclean($symb));
6572: }
6573: }
6574: if (!$namespace) {
6575: unless ($namespace=$env{'request.course.id'}) {
6576: return '';
6577: }
6578: }
6579: if (!$domain) { $domain=$env{'user.domain'}; }
6580: if (!$stuname) { $stuname=$env{'user.name'}; }
6581: if (!$home) { $home=$env{'user.home'}; }
6582: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
6583:
6584: my %returnhash=();
6585: foreach my $line (split(/\&/,$answer)) {
6586: my ($name,$value)=split(/\=/,$line);
6587: $returnhash{&unescape($name)}=&thaw_unescape($value);
6588: }
6589: my $version;
6590: for ($version=1;$version<=$returnhash{'version'};$version++) {
6591: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
6592: $returnhash{$item}=$returnhash{$version.':'.$item};
6593: }
6594: }
6595: return %returnhash;
6596: }
6597:
6598: # ---------------------------------------------------------- Course Description
6599: #
6600: #
6601:
6602: sub coursedescription {
6603: my ($courseid,$args)=@_;
6604: $courseid=~s/^\///;
6605: $courseid=~s/\_/\//g;
6606: my ($cdomain,$cnum)=split(/\//,$courseid);
6607: my $chome=&homeserver($cnum,$cdomain);
6608: my $normalid=$cdomain.'_'.$cnum;
6609: # need to always cache even if we get errors otherwise we keep
6610: # trying and trying and trying to get the course description.
6611: my %envhash=();
6612: my %returnhash=();
6613:
6614: my $expiretime=600;
6615: if ($env{'request.course.id'} eq $normalid) {
6616: $expiretime=120;
6617: }
6618:
6619: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
6620: if (!$args->{'freshen_cache'}
6621: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
6622: foreach my $key (keys(%env)) {
6623: next if ($key !~ /^\Q$prefix\E(.*)/);
6624: my ($setting) = $1;
6625: $returnhash{$setting} = $env{$key};
6626: }
6627: return %returnhash;
6628: }
6629:
6630: # get the data again
6631:
6632: if (!$args->{'one_time'}) {
6633: $envhash{'course.'.$normalid.'.last_cache'}=time;
6634: }
6635:
6636: if ($chome ne 'no_host') {
6637: %returnhash=&dump('environment',$cdomain,$cnum);
6638: if (!exists($returnhash{'con_lost'})) {
6639: my $username = $env{'user.name'}; # Defult username
6640: if(defined $args->{'user'}) {
6641: $username = $args->{'user'};
6642: }
6643: $returnhash{'home'}= $chome;
6644: $returnhash{'domain'} = $cdomain;
6645: $returnhash{'num'} = $cnum;
6646: if (!defined($returnhash{'type'})) {
6647: $returnhash{'type'} = 'Course';
6648: }
6649: while (my ($name,$value) = each %returnhash) {
6650: $envhash{'course.'.$normalid.'.'.$name}=$value;
6651: }
6652: $returnhash{'url'}=&clutter($returnhash{'url'});
6653: $returnhash{'fn'}=LONCAPA::tempdir() .
6654: $username.'_'.$cdomain.'_'.$cnum;
6655: $envhash{'course.'.$normalid.'.home'}=$chome;
6656: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
6657: $envhash{'course.'.$normalid.'.num'}=$cnum;
6658: }
6659: }
6660: if (!$args->{'one_time'}) {
6661: &appenv(\%envhash);
6662: }
6663: return %returnhash;
6664: }
6665:
6666: sub update_released_required {
6667: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
6668: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
6669: $cid = $env{'request.course.id'};
6670: $cdom = $env{'course.'.$cid.'.domain'};
6671: $cnum = $env{'course.'.$cid.'.num'};
6672: $chome = $env{'course.'.$cid.'.home'};
6673: }
6674: if ($needsrelease) {
6675: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
6676: my $needsupdate;
6677: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
6678: $needsupdate = 1;
6679: } else {
6680: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
6681: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
6682: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
6683: $needsupdate = 1;
6684: }
6685: }
6686: if ($needsupdate) {
6687: my %needshash = (
6688: 'internal.releaserequired' => $needsrelease,
6689: );
6690: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
6691: if ($putresult eq 'ok') {
6692: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
6693: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
6694: if (ref($crsinfo{$cid}) eq 'HASH') {
6695: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
6696: &courseidput($cdom,\%crsinfo,$chome,'notime');
6697: }
6698: }
6699: }
6700: }
6701: return;
6702: }
6703:
6704: # -------------------------------------------------See if a user is privileged
6705:
6706: sub privileged {
6707: my ($username,$domain,$possdomains,$possroles)=@_;
6708: my $now = time;
6709: my $roles;
6710: if (ref($possroles) eq 'ARRAY') {
6711: $roles = $possroles;
6712: } else {
6713: $roles = ['dc','su'];
6714: }
6715: if (ref($possdomains) eq 'ARRAY') {
6716: my %privileged = &privileged_by_domain($possdomains,$roles);
6717: foreach my $dom (@{$possdomains}) {
6718: if (($username =~ /^$match_username$/) && ($domain =~ /^$match_domain$/) &&
6719: (ref($privileged{$dom}) eq 'HASH')) {
6720: foreach my $role (@{$roles}) {
6721: if (ref($privileged{$dom}{$role}) eq 'HASH') {
6722: if (exists($privileged{$dom}{$role}{$username.':'.$domain})) {
6723: my ($end,$start) = split(/:/,$privileged{$dom}{$role}{$username.':'.$domain});
6724: return 1 unless (($end && $end < $now) ||
6725: ($start && $start > $now));
6726: }
6727: }
6728: }
6729: }
6730: }
6731: } else {
6732: my %rolesdump = &dump("roles", $domain, $username) or return 0;
6733: my $now = time;
6734:
6735: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys(%rolesdump)}) {
6736: my ($trole, $tend, $tstart) = split(/_/, $role);
6737: if (grep(/^\Q$trole\E$/,@{$roles})) {
6738: return 1 unless ($tend && $tend < $now)
6739: or ($tstart && $tstart > $now);
6740: }
6741: }
6742: }
6743: return 0;
6744: }
6745:
6746: sub privileged_by_domain {
6747: my ($domains,$roles) = @_;
6748: my %privileged = ();
6749: my $cachetime = 60*60*24;
6750: my $now = time;
6751: unless ((ref($domains) eq 'ARRAY') && (ref($roles) eq 'ARRAY')) {
6752: return %privileged;
6753: }
6754: foreach my $dom (@{$domains}) {
6755: next if (ref($privileged{$dom}) eq 'HASH');
6756: my $needroles;
6757: foreach my $role (@{$roles}) {
6758: my ($result,$cached)=&is_cached_new('priv_'.$role,$dom);
6759: if (defined($cached)) {
6760: if (ref($result) eq 'HASH') {
6761: $privileged{$dom}{$role} = $result;
6762: }
6763: } else {
6764: $needroles = 1;
6765: }
6766: }
6767: if ($needroles) {
6768: my %dompersonnel = &get_domain_roles($dom,$roles);
6769: $privileged{$dom} = {};
6770: foreach my $server (keys(%dompersonnel)) {
6771: if (ref($dompersonnel{$server}) eq 'HASH') {
6772: foreach my $item (keys(%{$dompersonnel{$server}})) {
6773: my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
6774: my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
6775: next if ($end && $end < $now);
6776: $privileged{$dom}{$trole}{$uname.':'.$udom} =
6777: $dompersonnel{$server}{$item};
6778: }
6779: }
6780: }
6781: if (ref($privileged{$dom}) eq 'HASH') {
6782: foreach my $role (@{$roles}) {
6783: if (ref($privileged{$dom}{$role}) eq 'HASH') {
6784: &do_cache_new('priv_'.$role,$dom,$privileged{$dom}{$role},$cachetime);
6785: } else {
6786: my %hash = ();
6787: &do_cache_new('priv_'.$role,$dom,\%hash,$cachetime);
6788: }
6789: }
6790: }
6791: }
6792: }
6793: return %privileged;
6794: }
6795:
6796: # -------------------------------------------------------- Get user privileges
6797:
6798: sub rolesinit {
6799: my ($domain, $username) = @_;
6800: my %userroles = ('user.login.time' => time);
6801: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
6802:
6803: # firstaccess and timerinterval are related to timed maps/resources.
6804: # also, blocking can be triggered by an activating timer
6805: # it's saved in the user's %env.
6806: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
6807: my %timerinterval = &dump('timerinterval', $domain, $username);
6808: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
6809: %timerintchk, %timerintenv);
6810:
6811: foreach my $key (keys(%firstaccess)) {
6812: my ($cid, $rest) = split(/\0/, $key);
6813: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
6814: }
6815:
6816: foreach my $key (keys(%timerinterval)) {
6817: my ($cid,$rest) = split(/\0/,$key);
6818: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
6819: }
6820:
6821: my %allroles=();
6822: my %allgroups=();
6823:
6824: for my $area (grep { ! /^rolesdef_/ } keys(%rolesdump)) {
6825: my $role = $rolesdump{$area};
6826: $area =~ s/\_\w\w$//;
6827:
6828: my ($trole, $tend, $tstart, $group_privs);
6829:
6830: if ($role =~ /^cr/) {
6831: # Custom role, defined by a user
6832: # e.g., user.role.cr/msu/smith/mynewrole
6833: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
6834: $trole = $1;
6835: ($tend, $tstart) = split('_', $2);
6836: } else {
6837: $trole = $role;
6838: }
6839: } elsif ($role =~ m|^gr/|) {
6840: # Role of member in a group, defined within a course/community
6841: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
6842: ($trole, $tend, $tstart) = split(/_/, $role);
6843: next if $tstart eq '-1';
6844: ($trole, $group_privs) = split(/\//, $trole);
6845: $group_privs = &unescape($group_privs);
6846: } else {
6847: # Just a normal role, defined in roles.tab
6848: ($trole, $tend, $tstart) = split(/_/,$role);
6849: }
6850:
6851: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
6852: $username);
6853: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
6854:
6855: # role expired or not available yet?
6856: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
6857: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
6858:
6859: next if $area eq '' or $trole eq '';
6860:
6861: my $spec = "$trole.$area";
6862: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
6863:
6864: if ($trole =~ /^cr\//) {
6865: # Custom role, defined by a user
6866: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
6867: } elsif ($trole eq 'gr') {
6868: # Role of a member in a group, defined within a course/community
6869: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
6870: next;
6871: } else {
6872: # Normal role, defined in roles.tab
6873: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
6874: }
6875:
6876: my $cid = $tdomain.'_'.$trest;
6877: unless ($firstaccchk{$cid}) {
6878: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
6879: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
6880: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
6881: $coursetimerstarts{$cid}{$item};
6882: }
6883: }
6884: $firstaccchk{$cid} = 1;
6885: }
6886: unless ($timerintchk{$cid}) {
6887: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
6888: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
6889: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
6890: $coursetimerintervals{$cid}{$item};
6891: }
6892: }
6893: $timerintchk{$cid} = 1;
6894: }
6895: }
6896:
6897: @userroles{'user.author','user.adv','user.rar'} = &set_userprivs(\%userroles,
6898: \%allroles, \%allgroups);
6899: $env{'user.adv'} = $userroles{'user.adv'};
6900: $env{'user.rar'} = $userroles{'user.rar'};
6901:
6902: return (\%userroles,\%firstaccenv,\%timerintenv);
6903: }
6904:
6905: sub set_arearole {
6906: my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
6907: unless ($nolog) {
6908: # log the associated role with the area
6909: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
6910: }
6911: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
6912: }
6913:
6914: sub custom_roleprivs {
6915: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
6916: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
6917: my $homsvr = &homeserver($rauthor,$rdomain);
6918: if (&hostname($homsvr) ne '') {
6919: my ($rdummy,$roledef)=
6920: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
6921: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
6922: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
6923: if (defined($syspriv)) {
6924: if ($trest =~ /^$match_community$/) {
6925: $syspriv =~ s/bre\&S//;
6926: }
6927: $$allroles{'cm./'}.=':'.$syspriv;
6928: $$allroles{$spec.'./'}.=':'.$syspriv;
6929: }
6930: if ($tdomain ne '') {
6931: if (defined($dompriv)) {
6932: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
6933: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
6934: }
6935: if (($trest ne '') && (defined($coursepriv))) {
6936: if ($trole =~ m{^cr/$tdomain/$tdomain\Q-domainconfig\E/([^/]+)$}) {
6937: my $rolename = $1;
6938: $coursepriv = &course_adhocrole_privs($rolename,$tdomain,$trest,$coursepriv);
6939: }
6940: $$allroles{'cm.'.$area}.=':'.$coursepriv;
6941: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
6942: }
6943: }
6944: }
6945: }
6946: }
6947:
6948: sub course_adhocrole_privs {
6949: my ($rolename,$cdom,$cnum,$coursepriv) = @_;
6950: my %overrides = &get('environment',["internal.adhocpriv.$rolename"],$cdom,$cnum);
6951: if ($overrides{"internal.adhocpriv.$rolename"}) {
6952: my (%currprivs,%storeprivs);
6953: foreach my $item (split(/:/,$coursepriv)) {
6954: my ($priv,$restrict) = split(/\&/,$item);
6955: $currprivs{$priv} = $restrict;
6956: }
6957: my (%possadd,%possremove,%full);
6958: foreach my $item (split(/\:/,$Apache::lonnet::pr{'cr:c'})) {
6959: my ($priv,$restrict)=split(/\&/,$item);
6960: $full{$priv} = $restrict;
6961: }
6962: foreach my $item (split(/,/,$overrides{"internal.adhocpriv.$rolename"})) {
6963: next if ($item eq '');
6964: my ($rule,$rest) = split(/=/,$item);
6965: next unless (($rule eq 'off') || ($rule eq 'on'));
6966: foreach my $priv (split(/:/,$rest)) {
6967: if ($priv ne '') {
6968: if ($rule eq 'off') {
6969: $possremove{$priv} = 1;
6970: } else {
6971: $possadd{$priv} = 1;
6972: }
6973: }
6974: }
6975: }
6976: foreach my $priv (sort(keys(%full))) {
6977: if (exists($currprivs{$priv})) {
6978: unless (exists($possremove{$priv})) {
6979: $storeprivs{$priv} = $currprivs{$priv};
6980: }
6981: } elsif (exists($possadd{$priv})) {
6982: $storeprivs{$priv} = $full{$priv};
6983: }
6984: }
6985: $coursepriv = ':'.join(':',map { $_.'&'.$storeprivs{$_}; } sort(keys(%storeprivs)));
6986: }
6987: return $coursepriv;
6988: }
6989:
6990: sub group_roleprivs {
6991: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
6992: my $access = 1;
6993: my $now = time;
6994: if (($tend!=0) && ($tend<$now)) { $access = 0; }
6995: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
6996: if ($access) {
6997: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
6998: $$allgroups{$course}{$group} .=':'.$group_privs;
6999: }
7000: }
7001:
7002: sub standard_roleprivs {
7003: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
7004: if (defined($pr{$trole.':s'})) {
7005: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
7006: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
7007: }
7008: if ($tdomain ne '') {
7009: if (defined($pr{$trole.':d'})) {
7010: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
7011: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
7012: }
7013: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
7014: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
7015: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
7016: }
7017: }
7018: }
7019:
7020: sub set_userprivs {
7021: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
7022: my $author=0;
7023: my $adv=0;
7024: my $rar=0;
7025: my %grouproles = ();
7026: if (keys(%{$allgroups}) > 0) {
7027: my @groupkeys;
7028: foreach my $role (keys(%{$allroles})) {
7029: push(@groupkeys,$role);
7030: }
7031: if (ref($groups_roles) eq 'HASH') {
7032: foreach my $key (keys(%{$groups_roles})) {
7033: unless (grep(/^\Q$key\E$/,@groupkeys)) {
7034: push(@groupkeys,$key);
7035: }
7036: }
7037: }
7038: if (@groupkeys > 0) {
7039: foreach my $role (@groupkeys) {
7040: my ($trole,$area,$sec,$extendedarea);
7041: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
7042: $trole = $1;
7043: $area = $2;
7044: $sec = $3;
7045: $extendedarea = $area.$sec;
7046: if (exists($$allgroups{$area})) {
7047: foreach my $group (keys(%{$$allgroups{$area}})) {
7048: my $spec = $trole.'.'.$extendedarea;
7049: $grouproles{$spec.'.'.$area.'/'.$group} =
7050: $$allgroups{$area}{$group};
7051: }
7052: }
7053: }
7054: }
7055: }
7056: }
7057: foreach my $group (keys(%grouproles)) {
7058: $$allroles{$group} = $grouproles{$group};
7059: }
7060: foreach my $role (keys(%{$allroles})) {
7061: my %thesepriv;
7062: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
7063: foreach my $item (split(/:/,$$allroles{$role})) {
7064: if ($item ne '') {
7065: my ($privilege,$restrictions)=split(/&/,$item);
7066: if ($restrictions eq '') {
7067: $thesepriv{$privilege}='F';
7068: } elsif ($thesepriv{$privilege} ne 'F') {
7069: $thesepriv{$privilege}.=$restrictions;
7070: }
7071: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
7072: if ($thesepriv{'rar'} eq 'F') { $rar=1; }
7073: }
7074: }
7075: my $thesestr='';
7076: foreach my $priv (sort(keys(%thesepriv))) {
7077: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
7078: }
7079: $userroles->{'user.priv.'.$role} = $thesestr;
7080: }
7081: return ($author,$adv,$rar);
7082: }
7083:
7084: sub role_status {
7085: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
7086: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
7087: my ($one,$two) = split(m{\./},$rolekey,2);
7088: (undef,undef,$$role) = split(/\./,$one,3);
7089: unless (!defined($$role) || $$role eq '') {
7090: $$where = '/'.$two;
7091: $$trolecode=$$role.'.'.$$where;
7092: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
7093: $$tstatus='is';
7094: if ($$tstart && $$tstart>$update) {
7095: $$tstatus='future';
7096: if ($$tstart<$now) {
7097: if ($$tstart && $$tstart>$refresh) {
7098: if (($$where ne '') && ($$role ne '')) {
7099: my (%allroles,%allgroups,$group_privs,
7100: %groups_roles,@rolecodes);
7101: my %userroles = (
7102: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
7103: );
7104: @rolecodes = ('cm');
7105: my $spec=$$role.'.'.$$where;
7106: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
7107: if ($$role =~ /^cr\//) {
7108: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
7109: push(@rolecodes,'cr');
7110: } elsif ($$role eq 'gr') {
7111: push(@rolecodes,$$role);
7112: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
7113: $env{'user.name'});
7114: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
7115: (undef,my $group_privs) = split(/\//,$trole);
7116: $group_privs = &unescape($group_privs);
7117: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
7118: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
7119: &get_groups_roles($tdomain,$trest,
7120: \%course_roles,\@rolecodes,
7121: \%groups_roles);
7122: } else {
7123: push(@rolecodes,$$role);
7124: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
7125: }
7126: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%allroles,\%allgroups,
7127: \%groups_roles);
7128: &appenv(\%userroles,\@rolecodes);
7129: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
7130: }
7131: }
7132: $$tstatus = 'is';
7133: }
7134: }
7135: if ($$tend) {
7136: if ($$tend<$update) {
7137: $$tstatus='expired';
7138: } elsif ($$tend<$now) {
7139: $$tstatus='will_not';
7140: }
7141: }
7142: }
7143: }
7144: }
7145:
7146: sub get_groups_roles {
7147: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
7148: return unless((ref($cdom_courseroles) eq 'HASH') &&
7149: (ref($rolecodes) eq 'ARRAY') &&
7150: (ref($groups_roles) eq 'HASH'));
7151: if (keys(%{$cdom_courseroles}) > 0) {
7152: my ($cnum) = ($rest =~ /^($match_courseid)/);
7153: if ($cdom ne '' && $cnum ne '') {
7154: foreach my $key (keys(%{$cdom_courseroles})) {
7155: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
7156: my $crsrole = $1;
7157: my $crssec = $2;
7158: if ($crsrole =~ /^cr/) {
7159: unless (grep(/^cr$/,@{$rolecodes})) {
7160: push(@{$rolecodes},'cr');
7161: }
7162: } else {
7163: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
7164: push(@{$rolecodes},$crsrole);
7165: }
7166: }
7167: my $rolekey = "$crsrole./$cdom/$cnum";
7168: if ($crssec ne '') {
7169: $rolekey .= "/$crssec";
7170: }
7171: $rolekey .= './';
7172: $groups_roles->{$rolekey} = $rolecodes;
7173: }
7174: }
7175: }
7176: }
7177: return;
7178: }
7179:
7180: sub delete_env_groupprivs {
7181: my ($where,$courseroles,$possroles) = @_;
7182: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
7183: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
7184: unless (ref($courseroles->{$udom}) eq 'HASH') {
7185: %{$courseroles->{$udom}} =
7186: &get_my_roles('','','userroles',['active'],
7187: $possroles,[$udom],1);
7188: }
7189: if (ref($courseroles->{$udom}) eq 'HASH') {
7190: foreach my $item (keys(%{$courseroles->{$udom}})) {
7191: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
7192: my $area = '/'.$cdom.'/'.$cnum;
7193: my $privkey = "user.priv.$crsrole.$area";
7194: if ($crssec ne '') {
7195: $privkey .= '/'.$crssec;
7196: }
7197: $privkey .= ".$area/$group";
7198: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
7199: }
7200: }
7201: return;
7202: }
7203:
7204: sub check_adhoc_privs {
7205: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller,$sec) = @_;
7206: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
7207: if ($sec) {
7208: $cckey .= '/'.$sec;
7209: }
7210: my $setprivs;
7211: if ($env{$cckey}) {
7212: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
7213: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
7214: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
7215: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
7216: $setprivs = 1;
7217: }
7218: } else {
7219: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
7220: $setprivs = 1;
7221: }
7222: return $setprivs;
7223: }
7224:
7225: sub set_adhoc_privileges {
7226: # role can be cc, ca, or cr/<dom>/<dom>-domainconfig/role
7227: my ($dcdom,$pickedcourse,$role,$caller,$sec) = @_;
7228: my $area = '/'.$dcdom.'/'.$pickedcourse;
7229: if ($sec ne '') {
7230: $area .= '/'.$sec;
7231: }
7232: my $spec = $role.'.'.$area;
7233: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
7234: $env{'user.name'},1);
7235: my %rolehash = ();
7236: if ($role =~ m{^\Qcr/$dcdom/$dcdom\E\-domainconfig/(\w+)$}) {
7237: my $rolename = $1;
7238: &custom_roleprivs(\%rolehash,$role,$dcdom,$pickedcourse,$spec,$area);
7239: my %domdef = &get_domain_defaults($dcdom);
7240: if (ref($domdef{'adhocroles'}) eq 'HASH') {
7241: if (ref($domdef{'adhocroles'}{$rolename}) eq 'HASH') {
7242: &appenv({'request.role.desc' => $domdef{'adhocroles'}{$rolename}{'desc'},});
7243: }
7244: }
7245: } else {
7246: &standard_roleprivs(\%rolehash,$role,$dcdom,$spec,$pickedcourse,$area);
7247: }
7248: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%rolehash);
7249: &appenv(\%userroles,[$role,'cm']);
7250: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
7251: unless (($caller eq 'constructaccess' && $env{'request.course.id'}) ||
7252: ($caller eq 'tiny')) {
7253: &appenv( {'request.role' => $spec,
7254: 'request.role.domain' => $dcdom,
7255: 'request.course.sec' => $sec,
7256: }
7257: );
7258: my $tadv=0;
7259: if (&allowed('adv') eq 'F') { $tadv=1; }
7260: &appenv({'request.role.adv' => $tadv});
7261: }
7262: }
7263:
7264: # --------------------------------------------------------------- get interface
7265:
7266: sub get {
7267: my ($namespace,$storearr,$udomain,$uname)=@_;
7268: my $items='';
7269: foreach my $item (@$storearr) {
7270: $items.=&escape($item).'&';
7271: }
7272: $items=~s/\&$//;
7273: if (!$udomain) { $udomain=$env{'user.domain'}; }
7274: if (!$uname) { $uname=$env{'user.name'}; }
7275: my $uhome=&homeserver($uname,$udomain);
7276:
7277: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
7278: my @pairs=split(/\&/,$rep);
7279: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
7280: return @pairs;
7281: }
7282: my %returnhash=();
7283: my $i=0;
7284: foreach my $item (@$storearr) {
7285: $returnhash{$item}=&thaw_unescape($pairs[$i]);
7286: $i++;
7287: }
7288: return %returnhash;
7289: }
7290:
7291: # --------------------------------------------------------------- del interface
7292:
7293: sub del {
7294: my ($namespace,$storearr,$udomain,$uname)=@_;
7295: my $items='';
7296: foreach my $item (@$storearr) {
7297: $items.=&escape($item).'&';
7298: }
7299:
7300: $items=~s/\&$//;
7301: if (!$udomain) { $udomain=$env{'user.domain'}; }
7302: if (!$uname) { $uname=$env{'user.name'}; }
7303: my $uhome=&homeserver($uname,$udomain);
7304: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
7305: }
7306:
7307: # -------------------------------------------------------------- dump interface
7308:
7309: sub unserialize {
7310: my ($rep, $escapedkeys) = @_;
7311:
7312: return {} if $rep =~ /^error/;
7313:
7314: my %returnhash=();
7315: foreach my $item (split(/\&/,$rep)) {
7316: my ($key, $value) = split(/=/, $item, 2);
7317: $key = unescape($key) unless $escapedkeys;
7318: next if $key =~ /^error: 2 /;
7319: $returnhash{$key} = &thaw_unescape($value);
7320: }
7321: #return %returnhash;
7322: return \%returnhash;
7323: }
7324:
7325: # see Lond::dump_with_regexp
7326: # if $escapedkeys hash keys won't get unescaped.
7327: sub dump {
7328: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys,$encrypt)=@_;
7329: if (!$udomain) { $udomain=$env{'user.domain'}; }
7330: if (!$uname) { $uname=$env{'user.name'}; }
7331: my $uhome=&homeserver($uname,$udomain);
7332:
7333: if ($regexp) {
7334: $regexp=&escape($regexp);
7335: } else {
7336: $regexp='.';
7337: }
7338: if (grep { $_ eq $uhome } current_machine_ids()) {
7339: # user is hosted on this machine
7340: my $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
7341: $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
7342: return %{unserialize($reply, $escapedkeys)};
7343: }
7344: my $rep;
7345: if ($encrypt) {
7346: $rep=&reply("encrypt:edump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
7347: } else {
7348: $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
7349: }
7350: my @pairs=split(/\&/,$rep);
7351: my %returnhash=();
7352: if (!($rep =~ /^error/ )) {
7353: foreach my $item (@pairs) {
7354: my ($key,$value)=split(/=/,$item,2);
7355: $key = unescape($key) unless $escapedkeys;
7356: #$key = &unescape($key);
7357: next if ($key =~ /^error: 2 /);
7358: $returnhash{$key}=&thaw_unescape($value);
7359: }
7360: }
7361: return %returnhash;
7362: }
7363:
7364:
7365: # --------------------------------------------------------- dumpstore interface
7366:
7367: sub dumpstore {
7368: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
7369: # same as dump but keys must be escaped. They may contain colon separated
7370: # lists of values that may themself contain colons (e.g. symbs).
7371: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
7372: }
7373:
7374: # -------------------------------------------------------------- keys interface
7375:
7376: sub getkeys {
7377: my ($namespace,$udomain,$uname)=@_;
7378: if (!$udomain) { $udomain=$env{'user.domain'}; }
7379: if (!$uname) { $uname=$env{'user.name'}; }
7380: my $uhome=&homeserver($uname,$udomain);
7381: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
7382: my @keyarray=();
7383: foreach my $key (split(/\&/,$rep)) {
7384: next if ($key =~ /^error: 2 /);
7385: push(@keyarray,&unescape($key));
7386: }
7387: return @keyarray;
7388: }
7389:
7390: # --------------------------------------------------------------- currentdump
7391: sub currentdump {
7392: my ($courseid,$sdom,$sname)=@_;
7393: $courseid = $env{'request.course.id'} if (! defined($courseid));
7394: $sdom = $env{'user.domain'} if (! defined($sdom));
7395: $sname = $env{'user.name'} if (! defined($sname));
7396: my $uhome = &homeserver($sname,$sdom);
7397: my $rep;
7398:
7399: if (grep { $_ eq $uhome } current_machine_ids()) {
7400: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
7401: $courseid)));
7402: } else {
7403: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
7404: }
7405:
7406: return if ($rep =~ /^(error:|no_such_host)/);
7407: #
7408: my %returnhash=();
7409: #
7410: if ($rep eq 'unknown_cmd') {
7411: # an old lond will not know currentdump
7412: # Do a dump and make it look like a currentdump
7413: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
7414: return if ($tmp[0] =~ /^(error:|no_such_host)/);
7415: my %hash = @tmp;
7416: @tmp=();
7417: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
7418: } else {
7419: my @pairs=split(/\&/,$rep);
7420: foreach my $pair (@pairs) {
7421: my ($key,$value)=split(/=/,$pair,2);
7422: my ($symb,$param) = split(/:/,$key);
7423: $returnhash{&unescape($symb)}->{&unescape($param)} =
7424: &thaw_unescape($value);
7425: }
7426: }
7427: return %returnhash;
7428: }
7429:
7430: sub convert_dump_to_currentdump{
7431: my %hash = %{shift()};
7432: my %returnhash;
7433: # Code ripped from lond, essentially. The only difference
7434: # here is the unescaping done by lonnet::dump(). Conceivably
7435: # we might run in to problems with parameter names =~ /^v\./
7436: while (my ($key,$value) = each(%hash)) {
7437: my ($v,$symb,$param) = split(/:/,$key);
7438: $symb = &unescape($symb);
7439: $param = &unescape($param);
7440: next if ($v eq 'version' || $symb eq 'keys');
7441: next if (exists($returnhash{$symb}) &&
7442: exists($returnhash{$symb}->{$param}) &&
7443: $returnhash{$symb}->{'v.'.$param} > $v);
7444: $returnhash{$symb}->{$param}=$value;
7445: $returnhash{$symb}->{'v.'.$param}=$v;
7446: }
7447: #
7448: # Remove all of the keys in the hashes which keep track of
7449: # the version of the parameter.
7450: while (my ($symb,$param_hash) = each(%returnhash)) {
7451: # use a foreach because we are going to delete from the hash.
7452: foreach my $key (keys(%$param_hash)) {
7453: delete($param_hash->{$key}) if ($key =~ /^v\./);
7454: }
7455: }
7456: return \%returnhash;
7457: }
7458:
7459: # ------------------------------------------------------ critical inc interface
7460:
7461: sub cinc {
7462: return &inc(@_,'critical');
7463: }
7464:
7465: # --------------------------------------------------------------- inc interface
7466:
7467: sub inc {
7468: my ($namespace,$store,$udomain,$uname,$critical) = @_;
7469: if (!$udomain) { $udomain=$env{'user.domain'}; }
7470: if (!$uname) { $uname=$env{'user.name'}; }
7471: my $uhome=&homeserver($uname,$udomain);
7472: my $items='';
7473: if (! ref($store)) {
7474: # got a single value, so use that instead
7475: $items = &escape($store).'=&';
7476: } elsif (ref($store) eq 'SCALAR') {
7477: $items = &escape($$store).'=&';
7478: } elsif (ref($store) eq 'ARRAY') {
7479: $items = join('=&',map {&escape($_);} @{$store});
7480: } elsif (ref($store) eq 'HASH') {
7481: while (my($key,$value) = each(%{$store})) {
7482: $items.= &escape($key).'='.&escape($value).'&';
7483: }
7484: }
7485: $items=~s/\&$//;
7486: if ($critical) {
7487: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
7488: } else {
7489: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
7490: }
7491: }
7492:
7493: # --------------------------------------------------------------- put interface
7494:
7495: sub put {
7496: my ($namespace,$storehash,$udomain,$uname,$encrypt)=@_;
7497: if (!$udomain) { $udomain=$env{'user.domain'}; }
7498: if (!$uname) { $uname=$env{'user.name'}; }
7499: my $uhome=&homeserver($uname,$udomain);
7500: my $items='';
7501: foreach my $item (keys(%$storehash)) {
7502: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
7503: }
7504: $items=~s/\&$//;
7505: if ($encrypt) {
7506: return &reply("encrypt:put:$udomain:$uname:$namespace:$items",$uhome);
7507: } else {
7508: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
7509: }
7510: }
7511:
7512: # ------------------------------------------------------------ newput interface
7513:
7514: sub newput {
7515: my ($namespace,$storehash,$udomain,$uname)=@_;
7516: if (!$udomain) { $udomain=$env{'user.domain'}; }
7517: if (!$uname) { $uname=$env{'user.name'}; }
7518: my $uhome=&homeserver($uname,$udomain);
7519: my $items='';
7520: foreach my $key (keys(%$storehash)) {
7521: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
7522: }
7523: $items=~s/\&$//;
7524: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
7525: }
7526:
7527: # --------------------------------------------------------- putstore interface
7528:
7529: sub putstore {
7530: my ($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog)=@_;
7531: if (!$udomain) { $udomain=$env{'user.domain'}; }
7532: if (!$uname) { $uname=$env{'user.name'}; }
7533: my $uhome=&homeserver($uname,$udomain);
7534: my $items='';
7535: foreach my $key (keys(%$storehash)) {
7536: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
7537: }
7538: $items=~s/\&$//;
7539: my $esc_symb=&escape($symb);
7540: my $esc_v=&escape($version);
7541: my $reply =
7542: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
7543: $uhome);
7544: if (($tolog) && ($reply eq 'ok')) {
7545: my $namevalue='';
7546: foreach my $key (keys(%{$storehash})) {
7547: $namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&';
7548: }
7549: my $ip = &get_requestor_ip();
7550: $namevalue .= 'ip='.&escape($ip).
7551: '&host='.&escape($perlvar{'lonHostID'}).
7552: '&version='.$esc_v.
7553: '&by='.&escape($env{'user.name'}.':'.$env{'user.domain'});
7554: &courselog($symb.':'.$uname.':'.$udomain.':PUTSTORE:'.$namevalue);
7555: }
7556: if ($reply eq 'unknown_cmd') {
7557: # gfall back to way things use to be done
7558: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
7559: $uname);
7560: }
7561: return $reply;
7562: }
7563:
7564: sub old_putstore {
7565: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
7566: if (!$udomain) { $udomain=$env{'user.domain'}; }
7567: if (!$uname) { $uname=$env{'user.name'}; }
7568: my $uhome=&homeserver($uname,$udomain);
7569: my %newstorehash;
7570: foreach my $item (keys(%$storehash)) {
7571: my $key = $version.':'.&escape($symb).':'.$item;
7572: $newstorehash{$key} = $storehash->{$item};
7573: }
7574: my $items='';
7575: my %allitems = ();
7576: foreach my $item (keys(%newstorehash)) {
7577: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
7578: my $key = $1.':keys:'.$2;
7579: $allitems{$key} .= $3.':';
7580: }
7581: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
7582: }
7583: foreach my $item (keys(%allitems)) {
7584: $allitems{$item} =~ s/\:$//;
7585: $items.= $item.'='.$allitems{$item}.'&';
7586: }
7587: $items=~s/\&$//;
7588: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
7589: }
7590:
7591: # ------------------------------------------------------ critical put interface
7592:
7593: sub cput {
7594: my ($namespace,$storehash,$udomain,$uname)=@_;
7595: if (!$udomain) { $udomain=$env{'user.domain'}; }
7596: if (!$uname) { $uname=$env{'user.name'}; }
7597: my $uhome=&homeserver($uname,$udomain);
7598: my $items='';
7599: foreach my $item (keys(%$storehash)) {
7600: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
7601: }
7602: $items=~s/\&$//;
7603: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
7604: }
7605:
7606: # -------------------------------------------------------------- eget interface
7607:
7608: sub eget {
7609: my ($namespace,$storearr,$udomain,$uname)=@_;
7610: my $items='';
7611: foreach my $item (@$storearr) {
7612: $items.=&escape($item).'&';
7613: }
7614: $items=~s/\&$//;
7615: if (!$udomain) { $udomain=$env{'user.domain'}; }
7616: if (!$uname) { $uname=$env{'user.name'}; }
7617: my $uhome=&homeserver($uname,$udomain);
7618: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
7619: my @pairs=split(/\&/,$rep);
7620: my %returnhash=();
7621: my $i=0;
7622: foreach my $item (@$storearr) {
7623: $returnhash{$item}=&thaw_unescape($pairs[$i]);
7624: $i++;
7625: }
7626: return %returnhash;
7627: }
7628:
7629: # ------------------------------------------------------------ tmpput interface
7630: sub tmpput {
7631: my ($storehash,$server,$context)=@_;
7632: my $items='';
7633: foreach my $item (keys(%$storehash)) {
7634: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
7635: }
7636: $items=~s/\&$//;
7637: if (defined($context)) {
7638: $items .= ':'.&escape($context);
7639: }
7640: return &reply("tmpput:$items",$server);
7641: }
7642:
7643: # ------------------------------------------------------------ tmpget interface
7644: sub tmpget {
7645: my ($token,$server)=@_;
7646: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
7647: my $rep=&reply("tmpget:$token",$server);
7648: my %returnhash;
7649: if ($rep =~ /^(con_lost|error|no_such_host)/i) {
7650: return %returnhash;
7651: }
7652: foreach my $item (split(/\&/,$rep)) {
7653: my ($key,$value)=split(/=/,$item);
7654: $returnhash{&unescape($key)}=&thaw_unescape($value);
7655: }
7656: return %returnhash;
7657: }
7658:
7659: # ------------------------------------------------------------ tmpdel interface
7660: sub tmpdel {
7661: my ($token,$server)=@_;
7662: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
7663: return &reply("tmpdel:$token",$server);
7664: }
7665:
7666: # ------------------------------------------------------------ get_timebased_id
7667:
7668: sub get_timebased_id {
7669: my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
7670: $maxtries) = @_;
7671: my ($newid,$error,$dellock);
7672: unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
7673: return ('','ok','invalid call to get suffix');
7674: }
7675:
7676: # set defaults for any optional args for which values were not supplied
7677: if ($who eq '') {
7678: $who = $env{'user.name'}.':'.$env{'user.domain'};
7679: }
7680: if (!$locktries) {
7681: $locktries = 3;
7682: }
7683: if (!$maxtries) {
7684: $maxtries = 10;
7685: }
7686:
7687: if (($cdom eq '') || ($cnum eq '')) {
7688: if ($env{'request.course.id'}) {
7689: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7690: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7691: }
7692: if (($cdom eq '') || ($cnum eq '')) {
7693: return ('','ok','call to get suffix not in course context');
7694: }
7695: }
7696:
7697: # construct locking item
7698: my $lockhash = {
7699: $prefix."\0".'locked_'.$keyid => $who,
7700: };
7701: my $tries = 0;
7702:
7703: # attempt to get lock on nohist_$namespace file
7704: my $gotlock = &newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
7705: while (($gotlock ne 'ok') && $tries <$locktries) {
7706: $tries ++;
7707: sleep 1;
7708: $gotlock = &newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
7709: }
7710:
7711: # attempt to get unique identifier, based on current timestamp
7712: if ($gotlock eq 'ok') {
7713: my %inuse = &dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
7714: my $id = time;
7715: $newid = $id;
7716: if ($idtype eq 'addcode') {
7717: $newid .= &sixnum_code();
7718: }
7719: my $idtries = 0;
7720: while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
7721: if ($idtype eq 'concat') {
7722: $newid = $id.$idtries;
7723: } elsif ($idtype eq 'addcode') {
7724: $newid = $newid.&sixnum_code();
7725: } else {
7726: $newid ++;
7727: }
7728: $idtries ++;
7729: }
7730: if (!exists($inuse{$prefix."\0".$newid})) {
7731: my %new_item = (
7732: $prefix."\0".$newid => $who,
7733: );
7734: my $putresult = &put('nohist_'.$namespace,\%new_item,
7735: $cdom,$cnum);
7736: if ($putresult ne 'ok') {
7737: undef($newid);
7738: $error = 'error saving new item: '.$putresult;
7739: }
7740: } else {
7741: undef($newid);
7742: $error = ('error: no unique suffix available for the new item ');
7743: }
7744: # remove lock
7745: my @del_lock = ($prefix."\0".'locked_'.$keyid);
7746: $dellock = &Apache::lonnet::del('nohist_'.$namespace,\@del_lock,$cdom,$cnum);
7747: } else {
7748: $error = "error: could not obtain lockfile\n";
7749: $dellock = 'ok';
7750: if (($prefix eq 'paste') && ($namespace eq 'courseeditor') && ($keyid eq 'num')) {
7751: $dellock = 'nolock';
7752: }
7753: }
7754: return ($newid,$dellock,$error);
7755: }
7756:
7757: sub sixnum_code {
7758: my $code;
7759: for (0..6) {
7760: $code .= int( rand(9) );
7761: }
7762: return $code;
7763: }
7764:
7765: # -------------------------------------------------- portfolio access checking
7766:
7767: sub portfolio_access {
7768: my ($requrl,$clientip) = @_;
7769: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
7770: my $result = &get_portfolio_access($udom,$unum,$file_name,$group,$clientip);
7771: if ($result) {
7772: my %setters;
7773: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
7774: my ($startblock,$endblock,$triggerblock,$by_ip,$blockdom) =
7775: &Apache::loncommon::blockcheck(\%setters,'port',$clientip,$unum,$udom);
7776: if (($startblock && $endblock) || ($by_ip)) {
7777: return 'B';
7778: }
7779: } else {
7780: my ($startblock,$endblock,$triggerblock,$by_ip,$blockdom) =
7781: &Apache::loncommon::blockcheck(\%setters,'port',$clientip);
7782: if (($startblock && $endblock) || ($by_ip)) {
7783: return 'B';
7784: }
7785: }
7786: }
7787: if ($result eq 'ok') {
7788: return 'F';
7789: } elsif ($result =~ /^[^:]+:guest_/) {
7790: return 'A';
7791: }
7792: return '';
7793: }
7794:
7795: sub get_portfolio_access {
7796: my ($udom,$unum,$file_name,$group,$clientip,$access_hash) = @_;
7797:
7798: if (!ref($access_hash)) {
7799: my $current_perms = &get_portfile_permissions($udom,$unum);
7800: my %access_controls = &get_access_controls($current_perms,$group,
7801: $file_name);
7802: $access_hash = $access_controls{$file_name};
7803: }
7804:
7805: my ($public,$guest,@domains,@users,@courses,@groups,@ips);
7806: my $now = time;
7807: if (ref($access_hash) eq 'HASH') {
7808: foreach my $key (keys(%{$access_hash})) {
7809: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
7810: if ($start > $now) {
7811: next;
7812: }
7813: if ($end && $end<$now) {
7814: next;
7815: }
7816: if ($scope eq 'public') {
7817: $public = $key;
7818: last;
7819: } elsif ($scope eq 'guest') {
7820: $guest = $key;
7821: } elsif ($scope eq 'domains') {
7822: push(@domains,$key);
7823: } elsif ($scope eq 'users') {
7824: push(@users,$key);
7825: } elsif ($scope eq 'course') {
7826: push(@courses,$key);
7827: } elsif ($scope eq 'group') {
7828: push(@groups,$key);
7829: } elsif ($scope eq 'ip') {
7830: push(@ips,$key);
7831: }
7832: }
7833: if ($public) {
7834: return 'ok';
7835: } elsif (@ips > 0) {
7836: my $allowed;
7837: foreach my $ipkey (@ips) {
7838: if (ref($access_hash->{$ipkey}{'ip'}) eq 'ARRAY') {
7839: if (&Apache::loncommon::check_ip_acc(join(',',@{$access_hash->{$ipkey}{'ip'}}),$clientip)) {
7840: $allowed = 1;
7841: last;
7842: }
7843: }
7844: }
7845: if ($allowed) {
7846: return 'ok';
7847: }
7848: }
7849: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
7850: if ($guest) {
7851: return $guest;
7852: }
7853: } else {
7854: if (@domains > 0) {
7855: foreach my $domkey (@domains) {
7856: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
7857: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
7858: return 'ok';
7859: }
7860: }
7861: }
7862: }
7863: if (@users > 0) {
7864: foreach my $userkey (@users) {
7865: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
7866: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
7867: if (ref($item) eq 'HASH') {
7868: if (($item->{'uname'} eq $env{'user.name'}) &&
7869: ($item->{'udom'} eq $env{'user.domain'})) {
7870: return 'ok';
7871: }
7872: }
7873: }
7874: }
7875: }
7876: }
7877: my %roleshash;
7878: my @courses_and_groups = @courses;
7879: push(@courses_and_groups,@groups);
7880: if (@courses_and_groups > 0) {
7881: my (%allgroups,%allroles);
7882: my ($start,$end,$role,$sec,$group);
7883: foreach my $envkey (%env) {
7884: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
7885: my $cid = $2.'_'.$3;
7886: if ($1 eq 'gr') {
7887: $group = $4;
7888: $allgroups{$cid}{$group} = $env{$envkey};
7889: } else {
7890: if ($4 eq '') {
7891: $sec = 'none';
7892: } else {
7893: $sec = $4;
7894: }
7895: $allroles{$cid}{$1}{$sec} = $env{$envkey};
7896: }
7897: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
7898: my $cid = $2.'_'.$3;
7899: if ($4 eq '') {
7900: $sec = 'none';
7901: } else {
7902: $sec = $4;
7903: }
7904: $allroles{$cid}{$1}{$sec} = $env{$envkey};
7905: }
7906: }
7907: if (keys(%allroles) == 0) {
7908: return;
7909: }
7910: foreach my $key (@courses_and_groups) {
7911: my %content = %{$$access_hash{$key}};
7912: my $cnum = $content{'number'};
7913: my $cdom = $content{'domain'};
7914: my $cid = $cdom.'_'.$cnum;
7915: if (!exists($allroles{$cid})) {
7916: next;
7917: }
7918: foreach my $role_id (keys(%{$content{'roles'}})) {
7919: my @sections = @{$content{'roles'}{$role_id}{'section'}};
7920: my @groups = @{$content{'roles'}{$role_id}{'group'}};
7921: my @status = @{$content{'roles'}{$role_id}{'access'}};
7922: my @roles = @{$content{'roles'}{$role_id}{'role'}};
7923: foreach my $role (keys(%{$allroles{$cid}})) {
7924: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
7925: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
7926: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
7927: if (grep/^all$/,@sections) {
7928: return 'ok';
7929: } else {
7930: if (grep/^$sec$/,@sections) {
7931: return 'ok';
7932: }
7933: }
7934: }
7935: }
7936: if (keys(%{$allgroups{$cid}}) == 0) {
7937: if (grep/^none$/,@groups) {
7938: return 'ok';
7939: }
7940: } else {
7941: if (grep/^all$/,@groups) {
7942: return 'ok';
7943: }
7944: foreach my $group (keys(%{$allgroups{$cid}})) {
7945: if (grep/^$group$/,@groups) {
7946: return 'ok';
7947: }
7948: }
7949: }
7950: }
7951: }
7952: }
7953: }
7954: }
7955: if ($guest) {
7956: return $guest;
7957: }
7958: }
7959: }
7960: return;
7961: }
7962:
7963: sub course_group_datechecker {
7964: my ($dates,$now,$status) = @_;
7965: my ($start,$end) = split(/\./,$dates);
7966: if (!$start && !$end) {
7967: return 'ok';
7968: }
7969: if (grep/^active$/,@{$status}) {
7970: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
7971: return 'ok';
7972: }
7973: }
7974: if (grep/^previous$/,@{$status}) {
7975: if ($end > $now ) {
7976: return 'ok';
7977: }
7978: }
7979: if (grep/^future$/,@{$status}) {
7980: if ($start > $now) {
7981: return 'ok';
7982: }
7983: }
7984: return;
7985: }
7986:
7987: sub parse_portfolio_url {
7988: my ($url) = @_;
7989:
7990: my ($type,$udom,$unum,$group,$file_name);
7991:
7992: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
7993: $type = 1;
7994: $udom = $1;
7995: $unum = $2;
7996: $file_name = $3;
7997: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
7998: $type = 2;
7999: $udom = $1;
8000: $unum = $2;
8001: $group = $3;
8002: $file_name = $3.'/'.$4;
8003: }
8004: if (wantarray) {
8005: return ($type,$udom,$unum,$file_name,$group);
8006: }
8007: return $type;
8008: }
8009:
8010: sub is_portfolio_url {
8011: my ($url) = @_;
8012: return scalar(&parse_portfolio_url($url));
8013: }
8014:
8015: sub is_portfolio_file {
8016: my ($file) = @_;
8017: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
8018: return 1;
8019: }
8020: return;
8021: }
8022:
8023: sub is_coursetool_logo {
8024: my ($uri) = @_;
8025: if ($env{'request.course.id'}) {
8026: my $courseurl = &courseid_to_courseurl($env{'request.course.id'});
8027: if ($uri =~ m{^/*uploaded\Q$courseurl\E/toollogo/\d+/[^/]+$}) {
8028: return 1;
8029: }
8030: }
8031: return;
8032: }
8033:
8034: sub usertools_access {
8035: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
8036: my ($access,%tools);
8037: if ($context eq '') {
8038: $context = 'tools';
8039: }
8040: if ($context eq 'requestcourses') {
8041: %tools = (
8042: official => 1,
8043: unofficial => 1,
8044: community => 1,
8045: textbook => 1,
8046: placement => 1,
8047: lti => 1,
8048: );
8049: } elsif ($context eq 'requestauthor') {
8050: %tools = (
8051: requestauthor => 1,
8052: );
8053: } else {
8054: %tools = (
8055: aboutme => 1,
8056: blog => 1,
8057: webdav => 1,
8058: portfolio => 1,
8059: timezone => 1,
8060: );
8061: }
8062: return if (!defined($tools{$tool}));
8063:
8064: if (($udom eq '') || ($uname eq '')) {
8065: $udom = $env{'user.domain'};
8066: $uname = $env{'user.name'};
8067: }
8068:
8069: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
8070: if ($action ne 'reload') {
8071: if ($context eq 'requestcourses') {
8072: return $env{'environment.canrequest.'.$tool};
8073: } elsif ($context eq 'requestauthor') {
8074: return $env{'environment.canrequest.author'};
8075: } else {
8076: return $env{'environment.availabletools.'.$tool};
8077: }
8078: }
8079: }
8080:
8081: my ($toolstatus,$inststatus,$envkey);
8082: if ($context eq 'requestauthor') {
8083: $envkey = $context;
8084: } else {
8085: $envkey = $context.'.'.$tool;
8086: }
8087:
8088: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
8089: ($action ne 'reload')) {
8090: $toolstatus = $env{'environment.'.$envkey};
8091: $inststatus = $env{'environment.inststatus'};
8092: } else {
8093: if (ref($userenvref) eq 'HASH') {
8094: $toolstatus = $userenvref->{$envkey};
8095: $inststatus = $userenvref->{'inststatus'};
8096: } else {
8097: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
8098: $toolstatus = $userenv{$envkey};
8099: $inststatus = $userenv{'inststatus'};
8100: }
8101: }
8102:
8103: if ($toolstatus ne '') {
8104: if ($toolstatus) {
8105: $access = 1;
8106: } else {
8107: $access = 0;
8108: }
8109: return $access;
8110: }
8111:
8112: my ($is_adv,%domdef);
8113: if (ref($is_advref) eq 'HASH') {
8114: $is_adv = $is_advref->{'is_adv'};
8115: } else {
8116: $is_adv = &is_advanced_user($udom,$uname);
8117: }
8118: if (ref($domdefref) eq 'HASH') {
8119: %domdef = %{$domdefref};
8120: } else {
8121: %domdef = &get_domain_defaults($udom);
8122: }
8123: if (ref($domdef{$tool}) eq 'HASH') {
8124: if ($is_adv) {
8125: if ($domdef{$tool}{'_LC_adv'} ne '') {
8126: if ($domdef{$tool}{'_LC_adv'}) {
8127: $access = 1;
8128: } else {
8129: $access = 0;
8130: }
8131: return $access;
8132: }
8133: }
8134: if ($inststatus ne '') {
8135: my ($hasaccess,$hasnoaccess);
8136: foreach my $affiliation (split(/:/,$inststatus)) {
8137: if ($domdef{$tool}{$affiliation} ne '') {
8138: if ($domdef{$tool}{$affiliation}) {
8139: $hasaccess = 1;
8140: } else {
8141: $hasnoaccess = 1;
8142: }
8143: }
8144: }
8145: if ($hasaccess || $hasnoaccess) {
8146: if ($hasaccess) {
8147: $access = 1;
8148: } elsif ($hasnoaccess) {
8149: $access = 0;
8150: }
8151: return $access;
8152: }
8153: } else {
8154: if ($domdef{$tool}{'default'} ne '') {
8155: if ($domdef{$tool}{'default'}) {
8156: $access = 1;
8157: } elsif ($domdef{$tool}{'default'} == 0) {
8158: $access = 0;
8159: }
8160: return $access;
8161: }
8162: }
8163: } else {
8164: if (($context eq 'tools') && ($tool ne 'webdav')) {
8165: $access = 1;
8166: } else {
8167: $access = 0;
8168: }
8169: return $access;
8170: }
8171: }
8172:
8173: sub is_course_owner {
8174: my ($cdom,$cnum,$udom,$uname) = @_;
8175: if (($udom eq '') || ($uname eq '')) {
8176: $udom = $env{'user.domain'};
8177: $uname = $env{'user.name'};
8178: }
8179: unless (($udom eq '') || ($uname eq '')) {
8180: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
8181: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
8182: return 1;
8183: } else {
8184: my %courseinfo = &coursedescription($cdom.'/'.$cnum);
8185: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
8186: return 1;
8187: }
8188: }
8189: }
8190: }
8191: return;
8192: }
8193:
8194: sub is_advanced_user {
8195: my ($udom,$uname) = @_;
8196: if ($udom ne '' && $uname ne '') {
8197: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
8198: if (wantarray) {
8199: return ($env{'user.adv'},$env{'user.author'});
8200: } else {
8201: return $env{'user.adv'};
8202: }
8203: }
8204: }
8205: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
8206: my %allroles;
8207: my ($is_adv,$is_author);
8208: foreach my $role (keys(%roleshash)) {
8209: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
8210: my $area = '/'.$tdomain.'/'.$trest;
8211: if ($sec ne '') {
8212: $area .= '/'.$sec;
8213: }
8214: if (($area ne '') && ($trole ne '')) {
8215: my $spec=$trole.'.'.$area;
8216: if ($trole =~ /^cr\//) {
8217: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
8218: } elsif ($trole ne 'gr') {
8219: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
8220: }
8221: if ($trole eq 'au') {
8222: $is_author = 1;
8223: }
8224: }
8225: }
8226: foreach my $role (keys(%allroles)) {
8227: last if ($is_adv);
8228: foreach my $item (split(/:/,$allroles{$role})) {
8229: if ($item ne '') {
8230: my ($privilege,$restrictions)=split(/&/,$item);
8231: if ($privilege eq 'adv') {
8232: $is_adv = 1;
8233: last;
8234: }
8235: }
8236: }
8237: }
8238: if (wantarray) {
8239: return ($is_adv,$is_author);
8240: }
8241: return $is_adv;
8242: }
8243:
8244: sub check_can_request {
8245: my ($dom,$can_request,$request_domains,$uname,$udom) = @_;
8246: my $canreq = 0;
8247: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
8248: $uname = $env{'user.name'};
8249: $udom = $env{'user.domain'};
8250: }
8251: my ($types,$typename) = &Apache::loncommon::course_types();
8252: my @options = ('approval','validate','autolimit');
8253: my $optregex = join('|',@options);
8254: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
8255: my %willtrust;
8256: foreach my $type (@{$types}) {
8257: if (&usertools_access($uname,$udom,$type,undef,
8258: 'requestcourses')) {
8259: $canreq ++;
8260: if (ref($request_domains) eq 'HASH') {
8261: push(@{$request_domains->{$type}},$udom);
8262: }
8263: if ($dom eq $udom) {
8264: $can_request->{$type} = 1;
8265: }
8266: }
8267: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '') &&
8268: ($env{'environment.reqcrsotherdom.'.$type} ne '')) {
8269: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
8270: if (@curr > 0) {
8271: foreach my $item (@curr) {
8272: if (ref($request_domains) eq 'HASH') {
8273: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
8274: if ($otherdom ne '') {
8275: unless (exists($willtrust{$otherdom})) {
8276: $willtrust{$otherdom} = &will_trust('reqcrs',$env{'user.domain'},$otherdom);
8277: }
8278: if ($willtrust{$otherdom}) {
8279: if (ref($request_domains->{$type}) eq 'ARRAY') {
8280: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
8281: push(@{$request_domains->{$type}},$otherdom);
8282: }
8283: } else {
8284: push(@{$request_domains->{$type}},$otherdom);
8285: }
8286: }
8287: }
8288: }
8289: }
8290: unless ($dom eq $env{'user.domain'}) {
8291: $canreq ++;
8292: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
8293: $can_request->{$type} = 1;
8294: }
8295: }
8296: }
8297: }
8298: }
8299: }
8300: return $canreq;
8301: }
8302:
8303: # ---------------------------------------------- Custom access rule evaluation
8304:
8305: sub customaccess {
8306: my ($priv,$uri)=@_;
8307: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
8308: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
8309: $udom = &LONCAPA::clean_domain($udom);
8310: $ucrs = &LONCAPA::clean_username($ucrs);
8311: my $access=0;
8312: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
8313: my ($effect,$realm,$role,$type)=split(/\:/,$right);
8314: if ($type eq 'user') {
8315: foreach my $scope (split(/\s*\,\s*/,$realm)) {
8316: my ($tdom,$tuname)=split(m{/},$scope);
8317: if ($tdom) {
8318: if ($tdom ne $env{'user.domain'}) { next; }
8319: }
8320: if ($tuname) {
8321: if ($tuname ne $env{'user.name'}) { next; }
8322: }
8323: $access=($effect eq 'allow');
8324: last;
8325: }
8326: } else {
8327: if ($role) {
8328: if ($role ne $urole) { next; }
8329: }
8330: foreach my $scope (split(/\s*\,\s*/,$realm)) {
8331: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
8332: if ($tdom) {
8333: if ($tdom ne $udom) { next; }
8334: }
8335: if ($tcrs) {
8336: if ($tcrs ne $ucrs) { next; }
8337: }
8338: if ($tsec) {
8339: if ($tsec ne $usec) { next; }
8340: }
8341: $access=($effect eq 'allow');
8342: last;
8343: }
8344: if ($realm eq '' && $role eq '') {
8345: $access=($effect eq 'allow');
8346: }
8347: }
8348: }
8349: return $access;
8350: }
8351:
8352: # ------------------------------------------------- Check for a user privilege
8353:
8354: sub allowed {
8355: my ($priv,$uri,$symb,$role,$clientip,$noblockcheck,$ignorecache,$nodeeplinkcheck,$nodeeplinkout)=@_;
8356: my $ver_orguri=$uri;
8357: $uri=&deversion($uri);
8358: my $orguri=$uri;
8359: $uri=&declutter($uri);
8360:
8361: if ($priv eq 'evb') {
8362: # Evade communication block restrictions for specified role in a course or domain
8363: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
8364: return $1;
8365: } else {
8366: return;
8367: }
8368: }
8369:
8370: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
8371: # Free bre access to adm and meta resources
8372: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard|viewclasslist|aboutme|ext\.tool)$}))
8373: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
8374: && ($priv eq 'bre')) {
8375: return 'F';
8376: }
8377:
8378: # Free bre access to user's own portfolio contents
8379: my ($space,$domain,$name,@dir)=split('/',$uri);
8380: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
8381: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
8382: my %setters;
8383: my ($startblock,$endblock,$triggerblock,$by_ip,$blockdom) =
8384: &Apache::loncommon::blockcheck(\%setters,'port',$clientip);
8385: if (($startblock && $endblock) || ($by_ip)) {
8386: return 'B';
8387: } else {
8388: return 'F';
8389: }
8390: }
8391:
8392: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
8393: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
8394: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
8395: if (exists($env{'request.course.id'})) {
8396: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8397: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
8398: if (($domain eq $cdom) && ($name eq $cnum)) {
8399: my $courseprivid=$env{'request.course.id'};
8400: $courseprivid=~s/\_/\//;
8401: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
8402: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
8403: return $1;
8404: } else {
8405: if ($env{'request.course.sec'}) {
8406: $courseprivid.='/'.$env{'request.course.sec'};
8407: }
8408: if ($env{'user.priv.'.$env{'request.role'}.'./'.
8409: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
8410: return $2;
8411: }
8412: }
8413: }
8414: }
8415: }
8416:
8417: # Free bre to public access
8418:
8419: if ($priv eq 'bre') {
8420: my $copyright;
8421: unless ($uri =~ /ext\.tool/) {
8422: $copyright=&metadata($uri,'copyright');
8423: }
8424: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
8425: return 'F';
8426: }
8427: if ($copyright eq 'priv') {
8428: $uri=~/([^\/]+)\/([^\/]+)\//;
8429: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
8430: return '';
8431: }
8432: }
8433: if ($copyright eq 'domain') {
8434: $uri=~/([^\/]+)\/([^\/]+)\//;
8435: unless (($env{'user.domain'} eq $1) ||
8436: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
8437: return '';
8438: }
8439: }
8440: if ($env{'request.role'}=~ /li\.\//) {
8441: # Library role, so allow browsing of resources in this domain.
8442: return 'F';
8443: }
8444: if ($copyright eq 'custom') {
8445: unless (&customaccess($priv,$uri)) { return ''; }
8446: }
8447: }
8448: # Domain coordinator is trying to create a course
8449: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
8450: # uri is the requested domain in this case.
8451: # comparison to 'request.role.domain' shows if the user has selected
8452: # a role of dc for the domain in question.
8453: return 'F' if ($uri eq $env{'request.role.domain'});
8454: }
8455:
8456: my $thisallowed='';
8457: my $statecond=0;
8458: my $courseprivid='';
8459:
8460: my $ownaccess;
8461: # Community Coordinator or Assistant Co-author browsing resource space.
8462: if (($priv eq 'bro') && ($env{'user.author'})) {
8463: if ($uri eq '') {
8464: $ownaccess = 1;
8465: } else {
8466: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
8467: my $udom = $env{'user.domain'};
8468: my $uname = $env{'user.name'};
8469: if ($uri =~ m{^\Q$udom\E/?$}) {
8470: $ownaccess = 1;
8471: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
8472: unless ($uri =~ m{\.\./}) {
8473: $ownaccess = 1;
8474: }
8475: } elsif (($udom ne 'public') && ($uname ne 'public')) {
8476: my $now = time;
8477: if ($uri =~ m{^([^/]+)/?$}) {
8478: my $adom = $1;
8479: foreach my $key (keys(%env)) {
8480: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
8481: my ($start,$end) = split(/\./,$env{$key});
8482: if (($now >= $start) && (!$end || $end > $now)) {
8483: $ownaccess = 1;
8484: last;
8485: }
8486: }
8487: }
8488: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
8489: my $adom = $1;
8490: my $aname = $2;
8491: foreach my $role ('ca','aa') {
8492: if ($env{"user.role.$role./$adom/$aname"}) {
8493: my ($start,$end) =
8494: split(/\./,$env{"user.role.$role./$adom/$aname"});
8495: if (($now >= $start) && (!$end || $end > $now)) {
8496: $ownaccess = 1;
8497: last;
8498: }
8499: }
8500: }
8501: }
8502: }
8503: }
8504: }
8505: }
8506:
8507: # Course
8508:
8509: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
8510: unless (($priv eq 'bro') && (!$ownaccess)) {
8511: $thisallowed.=$1;
8512: }
8513: }
8514:
8515: # Domain
8516:
8517: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
8518: =~/\Q$priv\E\&([^\:]*)/) {
8519: unless (($priv eq 'bro') && (!$ownaccess)) {
8520: $thisallowed.=$1;
8521: }
8522: }
8523:
8524: # User who is not author or co-author might still be able to edit
8525: # resource of an author in the domain (e.g., if Domain Coordinator).
8526: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
8527: (&allowed('mdc',$env{'request.course.id'}))) {
8528: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
8529: $thisallowed.=$1;
8530: }
8531: }
8532:
8533: # Course: uri itself is a course
8534: my $courseuri=$uri;
8535: $courseuri=~s/\_(\d)/\/$1/;
8536: $courseuri=~s/^([^\/])/\/$1/;
8537:
8538: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
8539: =~/\Q$priv\E\&([^\:]*)/) {
8540: if ($priv eq 'mip') {
8541: my $rem = $1;
8542: if (($uri ne '') && ($env{'request.course.id'} eq $uri) &&
8543: ($env{'course.'.$env{'request.course.id'}.'.internal.courseowner'} eq $env{'user.name'}.':'.$env{'user.domain'})) {
8544: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8545: if ($cdom ne '') {
8546: my %passwdconf = &get_passwdconf($cdom);
8547: if (ref($passwdconf{'crsownerchg'}) eq 'HASH') {
8548: if (ref($passwdconf{'crsownerchg'}{'by'}) eq 'ARRAY') {
8549: if (@{$passwdconf{'crsownerchg'}{'by'}}) {
8550: my @inststatuses = split(':',$env{'environment.inststatus'});
8551: unless (@inststatuses) {
8552: @inststatuses = ('default');
8553: }
8554: foreach my $status (@inststatuses) {
8555: if (grep(/^\Q$status\E$/,@{$passwdconf{'crsownerchg'}{'by'}})) {
8556: $thisallowed.=$rem;
8557: }
8558: }
8559: }
8560: }
8561: }
8562: }
8563: }
8564: } else {
8565: unless (($priv eq 'bro') && (!$ownaccess)) {
8566: $thisallowed.=$1;
8567: }
8568: }
8569: }
8570:
8571: # URI is an uploaded document for this course, default permissions don't matter
8572: # not allowing 'edit' access (editupload) to uploaded course docs
8573: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
8574: $thisallowed='';
8575: my ($match)=&is_on_map($uri);
8576: if ($match) {
8577: if ($env{'user.priv.'.$env{'request.role'}.'./'}
8578: =~/\Q$priv\E\&([^\:]*)/) {
8579: my $value = $1;
8580: my $deeplinkblock;
8581: unless ($nodeeplinkcheck) {
8582: $deeplinkblock = &deeplink_check($priv,$symb,$uri);
8583: }
8584: if ($deeplinkblock) {
8585: $thisallowed='D';
8586: } elsif ($noblockcheck) {
8587: $thisallowed.=$value;
8588: } else {
8589: my @blockers = &has_comm_blocking($priv,$symb,$uri,$ignorecache);
8590: if (@blockers > 0) {
8591: $thisallowed = 'B';
8592: } else {
8593: $thisallowed.=$value;
8594: }
8595: }
8596: }
8597: } else {
8598: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
8599: if ($refuri) {
8600: if ($refuri =~ m|^/adm/|) {
8601: $thisallowed='F';
8602: } else {
8603: $refuri=&declutter($refuri);
8604: my ($match) = &is_on_map($refuri);
8605: if ($match) {
8606: my $deeplinkblock;
8607: unless ($nodeeplinkcheck) {
8608: $deeplinkblock = &deeplink_check($priv,$symb,$refuri);
8609: }
8610: if ($deeplinkblock) {
8611: $thisallowed='D';
8612: } elsif ($noblockcheck) {
8613: $thisallowed='F';
8614: } else {
8615: my @blockers = &has_comm_blocking($priv,'',$refuri,'',1);
8616: if (@blockers > 0) {
8617: $thisallowed = 'B';
8618: } else {
8619: $thisallowed='F';
8620: }
8621: }
8622: }
8623: }
8624: }
8625: }
8626: }
8627:
8628: if ($priv eq 'bre'
8629: && $thisallowed ne 'F'
8630: && $thisallowed ne '2'
8631: && &is_portfolio_url($uri)) {
8632: $thisallowed = &portfolio_access($uri,$clientip);
8633: }
8634:
8635: # Full access at system, domain or course-wide level? Exit.
8636: if ($thisallowed=~/F/) {
8637: return 'F';
8638: }
8639:
8640: # If this is generating or modifying users, exit with special codes
8641:
8642: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
8643: if (($priv eq 'cca') || ($priv eq 'caa')) {
8644: my ($audom,$auname)=split('/',$uri);
8645: # no author name given, so this just checks on the general right to make a co-author in this domain
8646: unless ($auname) { return $thisallowed; }
8647: # an author name is given, so we are about to actually make a co-author for a certain account
8648: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
8649: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
8650: ($audom ne $env{'request.role.domain'}))) { return ''; }
8651: }
8652: return $thisallowed;
8653: }
8654: #
8655: # Gathered so far: system, domain and course wide privileges
8656: #
8657: # Course: See if uri or referer is an individual resource that is part of
8658: # the course
8659:
8660: if ($env{'request.course.id'}) {
8661:
8662: if ($priv eq 'bre') {
8663: if (&is_coursetool_logo($uri)) {
8664: return 'F';
8665: }
8666: }
8667:
8668: # If this is modifying password (internal auth) domains must match for user and user's role.
8669:
8670: if ($priv eq 'mip') {
8671: if ($env{'user.domain'} eq $env{'request.role.domain'}) {
8672: return $thisallowed;
8673: } else {
8674: return '';
8675: }
8676: }
8677:
8678: $courseprivid=$env{'request.course.id'};
8679: if ($env{'request.course.sec'}) {
8680: $courseprivid.='/'.$env{'request.course.sec'};
8681: }
8682: $courseprivid=~s/\_/\//;
8683: my $checkreferer=1;
8684: my ($match,$cond)=&is_on_map($uri);
8685: if ($match) {
8686: $statecond=$cond;
8687: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
8688: =~/\Q$priv\E\&([^\:]*)/) {
8689: my $value = $1;
8690: if ($priv eq 'bre') {
8691: my $deeplinkblock;
8692: unless ($nodeeplinkcheck) {
8693: $deeplinkblock = &deeplink_check($priv,$symb,$uri);
8694: }
8695: if ($deeplinkblock) {
8696: $thisallowed = 'D';
8697: } elsif ($noblockcheck) {
8698: $thisallowed.=$value;
8699: } else {
8700: my @blockers = &has_comm_blocking($priv,$symb,$uri,$ignorecache);
8701: if (@blockers > 0) {
8702: $thisallowed = 'B';
8703: } else {
8704: $thisallowed.=$value;
8705: }
8706: }
8707: } else {
8708: $thisallowed.=$value;
8709: }
8710: $checkreferer=0;
8711: }
8712: }
8713:
8714: if ($checkreferer) {
8715: my $refuri=$env{'httpref.'.$orguri};
8716: unless ($refuri) {
8717: foreach my $key (keys(%env)) {
8718: if ($key=~/^httpref\..*\*/) {
8719: my $pattern=$key;
8720: $pattern=~s/^httpref\.\/res\///;
8721: $pattern=~s/\*/\[\^\/\]\+/g;
8722: $pattern=~s/\//\\\//g;
8723: if ($orguri=~/$pattern/) {
8724: $refuri=$env{$key};
8725: }
8726: }
8727: }
8728: }
8729:
8730: if ($refuri) {
8731: $refuri=&declutter($refuri);
8732: my ($match,$cond)=&is_on_map($refuri);
8733: if ($match) {
8734: my $refstatecond=$cond;
8735: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
8736: =~/\Q$priv\E\&([^\:]*)/) {
8737: my $value = $1;
8738: if ($priv eq 'bre') {
8739: my $deeplinkblock;
8740: unless ($nodeeplinkcheck) {
8741: $deeplinkblock = &deeplink_check($priv,$symb,$refuri);
8742: }
8743: if ($deeplinkblock) {
8744: $thisallowed = 'D';
8745: } elsif ($noblockcheck) {
8746: $thisallowed.=$value;
8747: } else {
8748: my @blockers = &has_comm_blocking($priv,'',$refuri,'',1);
8749: if (@blockers > 0) {
8750: $thisallowed = 'B';
8751: } else {
8752: $thisallowed.=$value;
8753: }
8754: }
8755: } else {
8756: $thisallowed.=$value;
8757: }
8758: $uri=$refuri;
8759: $statecond=$refstatecond;
8760: }
8761: }
8762: }
8763: }
8764: }
8765:
8766: #
8767: # Gathered now: all privileges that could apply, and condition number
8768: #
8769: #
8770: # Full or no access?
8771: #
8772:
8773: if ($thisallowed=~/F/) {
8774: return 'F';
8775: }
8776:
8777: unless ($thisallowed) {
8778: return '';
8779: }
8780:
8781: # Restrictions exist, deal with them
8782: #
8783: # C:according to course preferences
8784: # R:according to resource settings
8785: # L:unless locked
8786: # X:according to user session state
8787: #
8788:
8789: # Possibly locked functionality, check all courses
8790: # In roles.tab, L (unless locked) available for bre, pch, plc, pac and sma.
8791: # Locks might take effect only after 10 minutes cache expiration for other
8792: # courses, and 2 minutes for current course, in which user has st or ta role
8793: # which is neither expired nor a future role (unless current course).
8794:
8795: my ($needlockcheck,$now,$crsonly);
8796: if ($thisallowed=~/L/) {
8797: $now = time;
8798: if ($priv eq 'bre') {
8799: if ($uri ne '') {
8800: if ($orguri =~ m{^/+res/}) {
8801: if ($uri =~ m{^lib/templates/}) {
8802: if ($env{'request.course.id'}) {
8803: $crsonly = 1;
8804: $needlockcheck = 1;
8805: }
8806: } else {
8807: $needlockcheck = 1;
8808: }
8809: } elsif ($env{'request.course.id'}) {
8810: my ($crsdom,$crsnum) = split('_',$env{'request.course.id'});
8811: if (($uri =~ m{^(adm|uploaded|public)/$crsdom/$crsnum/}) ||
8812: ($uri =~ m{^adm/$match_domain/$match_username/\d+/(smppg|bulletinboard)$})) {
8813: $crsonly = 1;
8814: }
8815: $needlockcheck = 1;
8816: }
8817: }
8818: } elsif (($priv eq 'pch') || ($priv eq 'plc') || ($priv eq 'pac') || ($priv eq 'sma')) {
8819: $needlockcheck = 1;
8820: }
8821: }
8822: if ($needlockcheck) {
8823: foreach my $envkey (keys(%env)) {
8824: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
8825: my $courseid=$2;
8826: my $roleid=$1.'.'.$2;
8827: $courseid=~s/^\///;
8828: unless ($env{'request.role'} eq $roleid) {
8829: my ($start,$end) = split(/\./,$env{$envkey});
8830: next unless (($now >= $start) && (!$end || $end > $now));
8831: }
8832: my $expiretime=600;
8833: if ($env{'request.role'} eq $roleid) {
8834: $expiretime=120;
8835: }
8836: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
8837: my $prefix='course.'.$cdom.'_'.$cnum.'.';
8838: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
8839: &coursedescription($courseid,{'freshen_cache' => 1});
8840: }
8841: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
8842: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
8843: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
8844: &log($env{'user.domain'},$env{'user.name'},
8845: $env{'user.home'},
8846: 'Locked by res: '.$priv.' for '.$uri.' due to '.
8847: $cdom.'/'.$cnum.'/'.$csec.' expire '.
8848: $env{$prefix.'priv.'.$priv.'.lock.expire'});
8849: return '';
8850: }
8851: }
8852: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
8853: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
8854: if ($env{$prefix.'priv.'.$priv.'.lock.expire'}>time) {
8855: &log($env{'user.domain'},$env{'user.name'},
8856: $env{'user.home'},
8857: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
8858: $cdom.'/'.$cnum.'/'.$csec.' expire '.
8859: $env{$prefix.'priv.'.$priv.'.lock.expire'});
8860: return '';
8861: }
8862: }
8863: }
8864: }
8865: }
8866:
8867: #
8868: # Rest of the restrictions depend on selected course
8869: #
8870:
8871: unless ($env{'request.course.id'}) {
8872: if ($thisallowed eq 'A') {
8873: return 'A';
8874: } elsif ($thisallowed eq 'B') {
8875: return 'B';
8876: } else {
8877: return '1';
8878: }
8879: }
8880:
8881: #
8882: # Now user is definitely in a course
8883: #
8884:
8885:
8886: # Course preferences
8887:
8888: if ($thisallowed=~/C/) {
8889: my $rolecode=(split(/\./,$env{'request.role'}))[0];
8890: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
8891: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
8892: =~/\Q$rolecode\E/) {
8893: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
8894: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
8895: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
8896: $env{'request.course.id'});
8897: }
8898: return '';
8899: }
8900:
8901: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
8902: =~/\Q$unamedom\E/) {
8903: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
8904: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
8905: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
8906: $env{'request.course.id'});
8907: }
8908: return '';
8909: }
8910: }
8911:
8912: # Resource preferences
8913:
8914: if ($thisallowed=~/R/) {
8915: my $rolecode=(split(/\./,$env{'request.role'}))[0];
8916: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
8917: if (($priv ne 'pch') && ($priv ne 'plc')) {
8918: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
8919: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
8920: }
8921: return '';
8922: }
8923: }
8924:
8925: # Restricted for deeplinked session?
8926:
8927: if ($env{'request.deeplink.login'}) {
8928: if ($env{'acc.deeplinkout'} && !$nodeeplinkout) {
8929: if (!$symb) { $symb=&symbread($uri,1); }
8930: if (($symb) && ($env{'acc.deeplinkout'}=~/\&\Q$symb\E\&/)) {
8931: return '';
8932: }
8933: }
8934: }
8935:
8936: # Restricted by state or randomout?
8937:
8938: if ($thisallowed=~/X/) {
8939: if ($env{'acc.randomout'}) {
8940: if (!$symb) { $symb=&symbread($uri,1); }
8941: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
8942: return '';
8943: }
8944: }
8945: if (&condval($statecond)) {
8946: return '2';
8947: } else {
8948: return '';
8949: }
8950: }
8951:
8952: if ($thisallowed eq 'A') {
8953: return 'A';
8954: } elsif ($thisallowed eq 'B') {
8955: return 'B';
8956: } elsif ($thisallowed eq 'D') {
8957: return 'D';
8958: }
8959: return 'F';
8960: }
8961:
8962: # ------------------------------------------- Check construction space access
8963:
8964: sub constructaccess {
8965: my ($url,$setpriv)=@_;
8966:
8967: # We do not allow editing of previous versions of files
8968: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
8969:
8970: # Get username and domain from URL
8971: my ($ownername,$ownerdomain,$ownerhome);
8972:
8973: ($ownerdomain,$ownername) =
8974: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)(?:/daxepage|/daxeopen)?/priv/($match_domain)/($match_username)(?:/|$)});
8975:
8976: # The URL does not really point to any authorspace, forget it
8977: unless (($ownername) && ($ownerdomain)) { return ''; }
8978:
8979: # Now we need to see if the user has access to the authorspace of
8980: # $ownername at $ownerdomain
8981:
8982: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
8983: # Real author for this?
8984: $ownerhome = $env{'user.home'};
8985: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
8986: return ($ownername,$ownerdomain,$ownerhome);
8987: }
8988: } elsif (&is_course($ownerdomain,$ownername)) {
8989: # Course Authoring Space?
8990: if ($env{'request.course.id'}) {
8991: if (($ownername eq $env{'course.'.$env{'request.course.id'}.'.num'}) &&
8992: ($ownerdomain eq $env{'course.'.$env{'request.course.id'}.'.domain'})) {
8993: if (&allowed('mdc',$env{'request.course.id'})) {
8994: $ownerhome = $env{'course.'.$env{'request.course.id'}.'.home'};
8995: return ($ownername,$ownerdomain,$ownerhome);
8996: }
8997: }
8998: }
8999: return '';
9000: } else {
9001: # Co-author for this?
9002: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
9003: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
9004: $ownerhome = &homeserver($ownername,$ownerdomain);
9005: return ($ownername,$ownerdomain,$ownerhome);
9006: }
9007: }
9008:
9009: # We don't have any access right now. If we are not possibly going to do anything about this,
9010: # we might as well leave
9011: unless ($setpriv) { return ''; }
9012:
9013: # Backdoor access?
9014: my $allowed=&allowed('eco',$ownerdomain);
9015: # Nope
9016: unless ($allowed) { return ''; }
9017: # Looks like we may have access, but could be locked by the owner of the construction space
9018: if ($allowed eq 'U') {
9019: my %blocked=&get('environment',['domcoord.author'],
9020: $ownerdomain,$ownername);
9021: # Is blocked by owner
9022: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
9023: }
9024: if (($allowed eq 'F') || ($allowed eq 'U')) {
9025: # Grant temporary access
9026: my $then=$env{'user.login.time'};
9027: my $update=$env{'user.update.time'};
9028: if (!$update) { $update = $then; }
9029: my $refresh=$env{'user.refresh.time'};
9030: if (!$refresh) { $refresh = $update; }
9031: my $now = time;
9032: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
9033: $now,'ca','constructaccess');
9034: $ownerhome = &homeserver($ownername,$ownerdomain);
9035: return($ownername,$ownerdomain,$ownerhome);
9036: }
9037: # No business here
9038: return '';
9039: }
9040:
9041: # ----------------------------------------------------------- Content Blocking
9042:
9043: {
9044: # Caches for faster Course Contents display where content blocking
9045: # is in operation (i.e., interval param set) for timed quiz.
9046: #
9047: # User for whom data are being temporarily cached.
9048: my $cacheduser='';
9049: # Course for which data are being temporarily cached.
9050: my $cachedcid='';
9051: # Cached blockers for this user (a hash of blocking items).
9052: my %cachedblockers=();
9053: # When the data were last cached.
9054: my $cachedlast='';
9055:
9056: sub load_all_blockers {
9057: my ($uname,$udom)=@_;
9058: if (($uname ne '') && ($udom ne '')) {
9059: if (($cacheduser eq $uname.':'.$udom) &&
9060: ($cachedcid eq $env{'request.course.id'}) &&
9061: (abs($cachedlast-time)<5)) {
9062: return;
9063: }
9064: }
9065: $cachedlast=time;
9066: $cacheduser=$uname.':'.$udom;
9067: $cachedcid=$env{'request.course.id'};
9068: %cachedblockers = &get_commblock_resources();
9069: return;
9070: }
9071:
9072: sub get_comm_blocks {
9073: my ($cdom,$cnum) = @_;
9074: if ($cdom eq '' || $cnum eq '') {
9075: return unless ($env{'request.course.id'});
9076: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
9077: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
9078: }
9079: my %commblocks;
9080: my $hashid=$cdom.'_'.$cnum;
9081: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
9082: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
9083: %commblocks = %{$blocksref};
9084: } else {
9085: %commblocks = &dump('comm_block',$cdom,$cnum);
9086: my $cachetime = 600;
9087: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
9088: }
9089: return %commblocks;
9090: }
9091:
9092: sub get_commblock_resources {
9093: my ($blocks) = @_;
9094: my %blockers = ();
9095: return %blockers unless ($env{'request.course.id'});
9096: my $courseurl = &courseid_to_courseurl($env{'request.course.id'});
9097: if ($env{'request.course.sec'}) {
9098: $courseurl .= '/'.$env{'request.course.sec'};
9099: }
9100: return %blockers if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseurl} =~/evb\&([^\:]*)/);
9101: my %commblocks;
9102: if (ref($blocks) eq 'HASH') {
9103: %commblocks = %{$blocks};
9104: } else {
9105: %commblocks = &get_comm_blocks();
9106: }
9107: return %blockers unless (keys(%commblocks) > 0);
9108: my $navmap = Apache::lonnavmaps::navmap->new();
9109: return %blockers unless (ref($navmap));
9110: my $now = time;
9111: foreach my $block (keys(%commblocks)) {
9112: if ($block =~ /^(\d+)____(\d+)$/) {
9113: my ($start,$end) = ($1,$2);
9114: if ($start <= $now && $end >= $now) {
9115: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
9116: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
9117: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
9118: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
9119: $blockers{$block}{maps} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
9120: }
9121: }
9122: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
9123: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
9124: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
9125: }
9126: }
9127: }
9128: }
9129: }
9130: } elsif ($block =~ /^firstaccess____(.+)$/) {
9131: my $item = $1;
9132: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
9133: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
9134: my (@interval,$mapname);
9135: my $type = 'map';
9136: if ($item eq 'course') {
9137: $type = 'course';
9138: @interval=&EXT("resource.0.interval");
9139: } else {
9140: if ($item =~ /___\d+___/) {
9141: $type = 'resource';
9142: @interval=&EXT("resource.0.interval",$item);
9143: } else {
9144: $mapname = &deversion($item);
9145: if (ref($navmap)) {
9146: my $timelimit = $navmap->get_mapparam(undef,$mapname,'0.interval');
9147: @interval = ($timelimit,'map');
9148: }
9149: }
9150: }
9151: if ($interval[0] =~ /^(\d+)/) {
9152: my $timelimit = $1;
9153: my $first_access;
9154: if ($type eq 'resource') {
9155: $first_access=&get_first_access($interval[1],$item);
9156: } elsif ($type eq 'map') {
9157: $first_access=&get_first_access($interval[1],undef,$item);
9158: } else {
9159: $first_access=&get_first_access($interval[1]);
9160: }
9161: if ($first_access) {
9162: my $timesup = $first_access+$timelimit;
9163: if ($timesup > $now) {
9164: my $activeblock;
9165: if ($type eq 'resource') {
9166: if (ref($navmap)) {
9167: my $res = $navmap->getBySymb($item);
9168: if ($res->answerable()) {
9169: $activeblock = 1;
9170: }
9171: }
9172: } elsif ($type eq 'map') {
9173: my $mapsymb = &symbread($mapname,1);
9174: if (($mapsymb) && (ref($navmap))) {
9175: my $mapres = $navmap->getBySymb($mapsymb);
9176: if (ref($mapres)) {
9177: my $first = $mapres->map_start();
9178: my $finish = $mapres->map_finish();
9179: my $it = $navmap->getIterator($first,$finish,undef,0,0);
9180: if (ref($it)) {
9181: my $res;
9182: while ($res = $it->next(undef,1)) {
9183: next unless (ref($res));
9184: my $symb = $res->symb();
9185: next if (($symb eq $mapsymb) || ($symb eq ''));
9186: @interval=&EXT("resource.0.interval",$symb);
9187: if ($interval[1] eq 'map') {
9188: if ($res->answerable()) {
9189: $activeblock = 1;
9190: last;
9191: }
9192: }
9193: }
9194: }
9195: }
9196: }
9197: }
9198: if ($activeblock) {
9199: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
9200: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
9201: $blockers{$block}{'maps'} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
9202: }
9203: }
9204: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
9205: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
9206: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
9207: }
9208: }
9209: }
9210: }
9211: }
9212: }
9213: }
9214: }
9215: }
9216: }
9217: return %blockers;
9218: }
9219:
9220: sub has_comm_blocking {
9221: my ($priv,$symb,$uri,$ignoresymbdb,$noenccheck,$blocked,$blocks) = @_;
9222: my @blockers;
9223: return unless ($env{'request.course.id'});
9224: return unless ($priv eq 'bre');
9225: return if ($env{'request.state'} eq 'construct');
9226: my $courseurl = &courseid_to_courseurl($env{'request.course.id'});
9227: if ($env{'request.course.sec'}) {
9228: $courseurl .= '/'.$env{'request.course.sec'};
9229: }
9230: return if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseurl} =~/evb\&([^\:]*)/);
9231: my %blockinfo;
9232: if (ref($blocks) eq 'HASH') {
9233: %blockinfo = &get_commblock_resources($blocks);
9234: } else {
9235: &load_all_blockers($env{'user.name'},$env{'user.domain'});
9236: %blockinfo = %cachedblockers;
9237: }
9238: return unless (keys(%blockinfo) > 0);
9239: my (%possibles,@symbs);
9240: if (!$symb) {
9241: $symb = &symbread($uri,1,1,1,\%possibles,$ignoresymbdb,$noenccheck);
9242: }
9243: if ($symb) {
9244: @symbs = ($symb);
9245: } elsif (keys(%possibles)) {
9246: @symbs = keys(%possibles);
9247: }
9248: my $noblock;
9249: foreach my $symb (@symbs) {
9250: last if ($noblock);
9251: my ($map,$resid,$resurl)=&decode_symb($symb);
9252: foreach my $block (keys(%blockinfo)) {
9253: if ($block =~ /^firstaccess____(.+)$/) {
9254: my $item = $1;
9255: unless ($blocked) {
9256: if (($item eq $map) || ($item eq $symb)) {
9257: $noblock = 1;
9258: last;
9259: }
9260: }
9261: }
9262: if (ref($blockinfo{$block}) eq 'HASH') {
9263: if (ref($blockinfo{$block}{'resources'}) eq 'HASH') {
9264: if ($blockinfo{$block}{'resources'}{$symb}) {
9265: unless (grep(/^\Q$block\E$/,@blockers)) {
9266: push(@blockers,$block);
9267: }
9268: }
9269: }
9270: if (ref($blockinfo{$block}{'maps'}) eq 'HASH') {
9271: if ($blockinfo{$block}{'maps'}{$map}) {
9272: unless (grep(/^\Q$block\E$/,@blockers)) {
9273: push(@blockers,$block);
9274: }
9275: }
9276: }
9277: }
9278: }
9279: }
9280: unless ($noblock) {
9281: return @blockers;
9282: }
9283: return;
9284: }
9285: }
9286:
9287: sub deeplink_check {
9288: my ($priv,$symb,$uri) = @_;
9289: return unless ($env{'request.course.id'});
9290: return unless ($priv eq 'bre');
9291: return if ($env{'request.state'} eq 'construct');
9292: return if ($env{'request.role.adv'});
9293: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
9294: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
9295: my (%possibles,@symbs);
9296: if (!$symb) {
9297: $symb = &symbread($uri,1,1,1,\%possibles);
9298: }
9299: if ($symb) {
9300: @symbs = ($symb);
9301: } elsif (keys(%possibles)) {
9302: @symbs = keys(%possibles);
9303: }
9304:
9305: my ($deeplink_symb,$allow);
9306: if ($env{'request.deeplink.login'}) {
9307: $deeplink_symb = &Apache::loncommon::deeplink_login_symb($cnum,$cdom);
9308: }
9309: foreach my $symb (@symbs) {
9310: last if ($allow);
9311: my $deeplink = &EXT("resource.0.deeplink",$symb);
9312: if ($deeplink eq '') {
9313: $allow = 1;
9314: } else {
9315: my ($state,$others,$listed,$scope,$protect) = split(/,/,$deeplink);
9316: if ($state ne 'only') {
9317: $allow = 1;
9318: } else {
9319: my $check_deeplink_entry;
9320: if ($protect ne 'none') {
9321: my ($acctype,$item) = split(/:/,$protect);
9322: if (($acctype eq 'ltic') && ($env{'user.linkprotector'})) {
9323: if (grep(/^\Q$item\Ec$/,split(/,/,$env{'user.linkprotector'}))) {
9324: $check_deeplink_entry = 1
9325: }
9326: } elsif (($acctype eq 'ltid') && ($env{'user.linkprotector'})) {
9327: if (grep(/^\Q$item\Ed$/,split(/,/,$env{'user.linkprotector'}))) {
9328: $check_deeplink_entry = 1;
9329: }
9330: } elsif (($acctype eq 'key') && ($env{'user.deeplinkkey'})) {
9331: if (grep(/^\Q$item\E$/,split(/,/,$env{'user.deeplinkkey'}))) {
9332: $check_deeplink_entry = 1;
9333: }
9334: }
9335: }
9336: if (($protect eq 'none') || ($check_deeplink_entry)) {
9337: if ($scope eq 'res') {
9338: if ($symb eq $deeplink_symb) {
9339: $allow = 1;
9340: }
9341: } elsif (($scope eq 'map') || ($scope eq 'rec')) {
9342: my ($map_from_symb,$map_from_login);
9343: $map_from_symb = &deversion((&decode_symb($symb))[0]);
9344: if ($deeplink_symb =~ /\.(page|sequence)$/) {
9345: $map_from_login = &deversion((&decode_symb($deeplink_symb))[2]);
9346: } else {
9347: $map_from_login = &deversion((&decode_symb($deeplink_symb))[0]);
9348: }
9349: if (($map_from_symb) && ($map_from_login)) {
9350: if ($map_from_symb eq $map_from_login) {
9351: $allow = 1;
9352: } elsif ($scope eq 'rec') {
9353: my @recurseup = &get_map_hierarchy($map_from_symb,$env{'request.course.id'});
9354: if (grep(/^\Q$map_from_login\E$/,@recurseup)) {
9355: $allow = 1;
9356: }
9357: }
9358: }
9359: }
9360: }
9361: }
9362: }
9363: }
9364: return if ($allow);
9365: return 1;
9366: }
9367:
9368: # -------------------------------- Deversion and split uri into path an filename
9369:
9370: #
9371: # Removes the version from a URI and
9372: # splits it in to its filename and path to the filename.
9373: # Seems like File::Basename could have done this more clearly.
9374: # Parameters:
9375: # $uri - input URI
9376: # Returns:
9377: # Two element list consisting of
9378: # $pathname - the URI up to and excluding the trailing /
9379: # $filename - The part of the URI following the last /
9380: # NOTE:
9381: # Another realization of this is simply:
9382: # use File::Basename;
9383: # ...
9384: # $uri = shift;
9385: # $filename = basename($uri);
9386: # $path = dirname($uri);
9387: # return ($filename, $path);
9388: #
9389: # The implementation below is probably faster however.
9390: #
9391: sub split_uri_for_cond {
9392: my $uri=&deversion(&declutter(shift));
9393: my @uriparts=split(/\//,$uri);
9394: my $filename=pop(@uriparts);
9395: my $pathname=join('/',@uriparts);
9396: return ($pathname,$filename);
9397: }
9398: # --------------------------------------------------- Is a resource on the map?
9399:
9400: sub is_on_map {
9401: my ($pathname,$filename) = &split_uri_for_cond(shift);
9402: #Trying to find the conditional for the file
9403: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
9404: /\&\Q$filename\E\:([\d\|]+)\&/);
9405: if ($match) {
9406: return (1,$1);
9407: } else {
9408: return (0,0);
9409: }
9410: }
9411:
9412: # --------------------------------------------------------- Get symb from alias
9413:
9414: sub get_symb_from_alias {
9415: my $symb=shift;
9416: my ($map,$resid,$url)=&decode_symb($symb);
9417: # Already is a symb
9418: if ($url) { return $symb; }
9419: # Must be an alias
9420: my $aliassymb='';
9421: my %bighash;
9422: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9423: &GDBM_READER(),0640)) {
9424: my $rid=$bighash{'mapalias_'.$symb};
9425: if ($rid) {
9426: my ($mapid,$resid)=split(/\./,$rid);
9427: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
9428: $resid,$bighash{'src_'.$rid});
9429: }
9430: untie %bighash;
9431: }
9432: return $aliassymb;
9433: }
9434:
9435: # ----------------------------------------------------------------- Define Role
9436:
9437: sub definerole {
9438: if (allowed('mcr','/')) {
9439: my ($rolename,$sysrole,$domrole,$courole,$uname,$udom)=@_;
9440: foreach my $role (split(':',$sysrole)) {
9441: my ($crole,$cqual)=split(/\&/,$role);
9442: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
9443: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
9444: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
9445: return "refused:s:$crole&$cqual";
9446: }
9447: }
9448: }
9449: foreach my $role (split(':',$domrole)) {
9450: my ($crole,$cqual)=split(/\&/,$role);
9451: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
9452: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
9453: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
9454: return "refused:d:$crole&$cqual";
9455: }
9456: }
9457: }
9458: foreach my $role (split(':',$courole)) {
9459: my ($crole,$cqual)=split(/\&/,$role);
9460: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
9461: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
9462: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
9463: return "refused:c:$crole&$cqual";
9464: }
9465: }
9466: }
9467: my $uhome;
9468: if (($uname ne '') && ($udom ne '')) {
9469: $uhome = &homeserver($uname,$udom);
9470: return $uhome if ($uhome eq 'no_host');
9471: } else {
9472: $uname = $env{'user.name'};
9473: $udom = $env{'user.domain'};
9474: $uhome = $env{'user.home'};
9475: }
9476: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
9477: "$udom:$uname:rolesdef_$rolename=".
9478: escape($sysrole.'_'.$domrole.'_'.$courole);
9479: return reply($command,$uhome);
9480: } else {
9481: return 'refused';
9482: }
9483: }
9484:
9485: # ---------------- Make a metadata query against the network of library servers
9486:
9487: sub metadata_query {
9488: my ($query,$custom,$customshow,$server_array,$domains_hash)=@_;
9489: my %rhash;
9490: my %libserv = &all_library();
9491: my @server_list = (defined($server_array) ? @$server_array
9492: : keys(%libserv) );
9493: for my $server (@server_list) {
9494: my $domains = '';
9495: if (ref($domains_hash) eq 'HASH') {
9496: $domains = $domains_hash->{$server};
9497: }
9498: unless ($custom or $customshow) {
9499: my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server);
9500: $rhash{$server}=$reply;
9501: }
9502: else {
9503: my $reply=&reply("querysend:".&escape($query).':'.
9504: &escape($custom).':'.&escape($customshow).':'.&escape($domains),
9505: $server);
9506: $rhash{$server}=$reply;
9507: }
9508: }
9509: return \%rhash;
9510: }
9511:
9512: # ----------------------------------------- Send log queries and wait for reply
9513:
9514: sub log_query {
9515: my ($uname,$udom,$query,%filters)=@_;
9516: my $uhome=&homeserver($uname,$udom);
9517: if ($uhome eq 'no_host') { return 'error: no_host'; }
9518: my $uhost=&hostname($uhome);
9519: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
9520: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
9521: $uhome);
9522: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
9523: return get_query_reply($queryid);
9524: }
9525:
9526: # -------------------------- Update MySQL table for portfolio file
9527:
9528: sub update_portfolio_table {
9529: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
9530: if ($group ne '') {
9531: $file_name =~s /^\Q$group\E//;
9532: }
9533: my $homeserver = &homeserver($uname,$udom);
9534: my $queryid=
9535: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
9536: ':'.&escape($file_name).':'.$action,$homeserver);
9537: my $reply = &get_query_reply($queryid);
9538: return $reply;
9539: }
9540:
9541: # -------------------------- Update MySQL allusers table
9542:
9543: sub update_allusers_table {
9544: my ($uname,$udom,$names) = @_;
9545: my $homeserver = &homeserver($uname,$udom);
9546: my $queryid=
9547: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
9548: 'lastname='.&escape($names->{'lastname'}).'%%'.
9549: 'firstname='.&escape($names->{'firstname'}).'%%'.
9550: 'middlename='.&escape($names->{'middlename'}).'%%'.
9551: 'generation='.&escape($names->{'generation'}).'%%'.
9552: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
9553: 'id='.&escape($names->{'id'}),$homeserver);
9554: return;
9555: }
9556:
9557: # ------- Request retrieval of institutional classlists for course(s)
9558:
9559: sub fetch_enrollment_query {
9560: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
9561: my ($homeserver,$sleep,$loopmax);
9562: my $maxtries = 1;
9563: if ($context eq 'automated') {
9564: $homeserver = $perlvar{'lonHostID'};
9565: $sleep = 2;
9566: $loopmax = 100;
9567: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
9568: } else {
9569: $homeserver = &homeserver($cnum,$dom);
9570: }
9571: my $host=&hostname($homeserver);
9572: my $cmd = '';
9573: foreach my $affiliate (keys(%{$affiliatesref})) {
9574: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
9575: }
9576: $cmd =~ s/%%$//;
9577: $cmd = &escape($cmd);
9578: my $query = 'fetchenrollment';
9579: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
9580: unless ($queryid=~/^\Q$host\E\_/) {
9581: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
9582: return 'error: '.$queryid;
9583: }
9584: my $reply = &get_query_reply($queryid,$sleep,$loopmax);
9585: my $tries = 1;
9586: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
9587: $reply = &get_query_reply($queryid,$sleep,$loopmax);
9588: $tries ++;
9589: }
9590: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
9591: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
9592: } else {
9593: my @responses = split(/:/,$reply);
9594: if (grep { $_ eq $homeserver } ¤t_machine_ids()) {
9595: foreach my $line (@responses) {
9596: my ($key,$value) = split(/=/,$line,2);
9597: $$replyref{$key} = $value;
9598: }
9599: } else {
9600: my $pathname = LONCAPA::tempdir();
9601: foreach my $line (@responses) {
9602: my ($key,$value) = split(/=/,$line);
9603: $$replyref{$key} = $value;
9604: if ($value > 0) {
9605: foreach my $item (@{$$affiliatesref{$key}}) {
9606: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
9607: my $destname = $pathname.'/'.$filename;
9608: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
9609: if ($xml_classlist =~ /^error/) {
9610: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
9611: } else {
9612: if ( open(FILE,">",$destname) ) {
9613: print FILE &unescape($xml_classlist);
9614: close(FILE);
9615: } else {
9616: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
9617: }
9618: }
9619: }
9620: }
9621: }
9622: }
9623: return 'ok';
9624: }
9625: return 'error';
9626: }
9627:
9628: sub get_query_reply {
9629: my ($queryid,$sleep,$loopmax) = @_;
9630: if (($sleep eq '') || ($sleep !~ /^\d+\.?\d*$/)) {
9631: $sleep = 0.2;
9632: }
9633: if (($loopmax eq '') || ($loopmax =~ /\D/)) {
9634: $loopmax = 100;
9635: }
9636: my $replyfile=LONCAPA::tempdir().$queryid;
9637: my $reply='';
9638: for (1..$loopmax) {
9639: sleep($sleep);
9640: if (-e $replyfile.'.end') {
9641: if (open(my $fh,"<",$replyfile)) {
9642: $reply = join('',<$fh>);
9643: close($fh);
9644: } else { return 'error: reply_file_error'; }
9645: return &unescape($reply);
9646: }
9647: }
9648: return 'timeout:'.$queryid;
9649: }
9650:
9651: sub courselog_query {
9652: #
9653: # possible filters:
9654: # url: url or symb
9655: # username
9656: # domain
9657: # action: view, submit, grade
9658: # start: timestamp
9659: # end: timestamp
9660: #
9661: my (%filters)=@_;
9662: unless ($env{'request.course.id'}) { return 'no_course'; }
9663: if ($filters{'url'}) {
9664: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
9665: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
9666: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
9667: }
9668: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
9669: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
9670: return &log_query($cname,$cdom,'courselog',%filters);
9671: }
9672:
9673: sub userlog_query {
9674: #
9675: # possible filters:
9676: # action: log check role
9677: # start: timestamp
9678: # end: timestamp
9679: #
9680: my ($uname,$udom,%filters)=@_;
9681: return &log_query($uname,$udom,'userlog',%filters);
9682: }
9683:
9684: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
9685:
9686: sub auto_run {
9687: my ($cnum,$cdom) = @_;
9688: my $response = 0;
9689: my $settings;
9690: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
9691: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
9692: $settings = $domconfig{'autoenroll'};
9693: if ($settings->{'run'} eq '1') {
9694: $response = 1;
9695: }
9696: } else {
9697: my $homeserver;
9698: if (&is_course($cdom,$cnum)) {
9699: $homeserver = &homeserver($cnum,$cdom);
9700: } else {
9701: $homeserver = &domain($cdom,'primary');
9702: }
9703: if ($homeserver ne 'no_host') {
9704: $response = &reply('autorun:'.$cdom,$homeserver);
9705: }
9706: }
9707: return $response;
9708: }
9709:
9710: sub auto_get_sections {
9711: my ($cnum,$cdom,$inst_coursecode) = @_;
9712: my $homeserver;
9713: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9714: $homeserver = &homeserver($cnum,$cdom);
9715: }
9716: if (!defined($homeserver)) {
9717: if ($cdom =~ /^$match_domain$/) {
9718: $homeserver = &domain($cdom,'primary');
9719: }
9720: }
9721: my @secs;
9722: if (defined($homeserver)) {
9723: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
9724: unless ($response eq 'refused') {
9725: @secs = split(/:/,$response);
9726: }
9727: }
9728: return @secs;
9729: }
9730:
9731: sub auto_new_course {
9732: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
9733: my $homeserver = &homeserver($cnum,$cdom);
9734: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
9735: return $response;
9736: }
9737:
9738: sub auto_validate_courseID {
9739: my ($cnum,$cdom,$inst_course_id) = @_;
9740: my $homeserver = &homeserver($cnum,$cdom);
9741: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
9742: return $response;
9743: }
9744:
9745: sub auto_validate_instcode {
9746: my ($cnum,$cdom,$instcode,$owner) = @_;
9747: my ($homeserver,$response);
9748: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9749: $homeserver = &homeserver($cnum,$cdom);
9750: }
9751: if (!defined($homeserver)) {
9752: if ($cdom =~ /^$match_domain$/) {
9753: $homeserver = &domain($cdom,'primary');
9754: }
9755: }
9756: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
9757: &escape($instcode).':'.&escape($owner),$homeserver));
9758: my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
9759: return ($outcome,$description,$defaultcredits);
9760: }
9761:
9762: sub auto_validate_inst_crosslist {
9763: my ($cnum,$cdom,$instcode,$inst_xlist,$coowner) = @_;
9764: my ($homeserver,$response);
9765: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9766: $homeserver = &homeserver($cnum,$cdom);
9767: }
9768: if (!defined($homeserver)) {
9769: if ($cdom =~ /^$match_domain$/) {
9770: $homeserver = &domain($cdom,'primary');
9771: }
9772: }
9773: unless (($homeserver eq '') || ($homeserver eq 'no_host')) {
9774: $response=&reply('autovalidateinstcrosslist:'.$cdom.':'.
9775: &escape($instcode).':'.&escape($inst_xlist).':'.
9776: &escape($coowner),$homeserver);
9777: }
9778: return $response;
9779: }
9780:
9781: sub auto_create_password {
9782: my ($cnum,$cdom,$authparam,$udom) = @_;
9783: my ($homeserver,$response);
9784: my $create_passwd = 0;
9785: my $authchk = '';
9786: if ($udom =~ /^$match_domain$/) {
9787: $homeserver = &domain($udom,'primary');
9788: }
9789: if ($homeserver eq '') {
9790: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9791: $homeserver = &homeserver($cnum,$cdom);
9792: }
9793: }
9794: if ($homeserver eq '') {
9795: $authchk = 'nodomain';
9796: } else {
9797: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
9798: if ($response eq 'refused') {
9799: $authchk = 'refused';
9800: } else {
9801: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
9802: }
9803: }
9804: return ($authparam,$create_passwd,$authchk);
9805: }
9806:
9807: sub auto_photo_permission {
9808: my ($cnum,$cdom,$students) = @_;
9809: my $homeserver = &homeserver($cnum,$cdom);
9810: my ($outcome,$perm_reqd,$conditions) =
9811: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
9812: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
9813: return (undef,undef);
9814: }
9815: return ($outcome,$perm_reqd,$conditions);
9816: }
9817:
9818: sub auto_checkphotos {
9819: my ($uname,$udom,$pid) = @_;
9820: my $homeserver = &homeserver($uname,$udom);
9821: my ($result,$resulttype);
9822: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
9823: &escape($uname).':'.&escape($pid),
9824: $homeserver));
9825: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
9826: return (undef,undef);
9827: }
9828: if ($outcome) {
9829: ($result,$resulttype) = split(/:/,$outcome);
9830: }
9831: return ($result,$resulttype);
9832: }
9833:
9834: sub auto_photochoice {
9835: my ($cnum,$cdom) = @_;
9836: my $homeserver = &homeserver($cnum,$cdom);
9837: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
9838: &escape($cdom),
9839: $homeserver)));
9840: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
9841: return (undef,undef);
9842: }
9843: return ($update,$comment);
9844: }
9845:
9846: sub auto_photoupdate {
9847: my ($affiliatesref,$dom,$cnum,$photo) = @_;
9848: my $homeserver = &homeserver($cnum,$dom);
9849: my $host=&hostname($homeserver);
9850: my $cmd = '';
9851: my $maxtries = 1;
9852: foreach my $affiliate (keys(%{$affiliatesref})) {
9853: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
9854: }
9855: $cmd =~ s/%%$//;
9856: $cmd = &escape($cmd);
9857: my $query = 'institutionalphotos';
9858: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
9859: unless ($queryid=~/^\Q$host\E\_/) {
9860: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
9861: return 'error: '.$queryid;
9862: }
9863: my $reply = &get_query_reply($queryid);
9864: my $tries = 1;
9865: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
9866: $reply = &get_query_reply($queryid);
9867: $tries ++;
9868: }
9869: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
9870: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
9871: } else {
9872: my @responses = split(/:/,$reply);
9873: my $outcome = shift(@responses);
9874: foreach my $item (@responses) {
9875: my ($key,$value) = split(/=/,$item);
9876: $$photo{$key} = $value;
9877: }
9878: return $outcome;
9879: }
9880: return 'error';
9881: }
9882:
9883: sub auto_instcode_format {
9884: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
9885: $cat_order) = @_;
9886: my $courses = '';
9887: my @homeservers;
9888: if ($caller eq 'global') {
9889: my %servers = &get_servers($codedom,'library');
9890: foreach my $tryserver (keys(%servers)) {
9891: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
9892: push(@homeservers,$tryserver);
9893: }
9894: }
9895: } elsif ($caller eq 'requests') {
9896: if ($codedom =~ /^$match_domain$/) {
9897: my $chome = &domain($codedom,'primary');
9898: unless ($chome eq 'no_host') {
9899: push(@homeservers,$chome);
9900: }
9901: }
9902: } else {
9903: push(@homeservers,&homeserver($caller,$codedom));
9904: }
9905: foreach my $code (keys(%{$instcodes})) {
9906: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
9907: }
9908: chop($courses);
9909: my $ok_response = 0;
9910: my $response;
9911: while (@homeservers > 0 && $ok_response == 0) {
9912: my $server = shift(@homeservers);
9913: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
9914: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
9915: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
9916: split(/:/,$response);
9917: %{$codes} = (%{$codes},&str2hash($codes_str));
9918: push(@{$codetitles},&str2array($codetitles_str));
9919: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
9920: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
9921: $ok_response = 1;
9922: }
9923: }
9924: if ($ok_response) {
9925: return 'ok';
9926: } else {
9927: return $response;
9928: }
9929: }
9930:
9931: sub auto_instcode_defaults {
9932: my ($domain,$returnhash,$code_order) = @_;
9933: my @homeservers;
9934:
9935: my %servers = &get_servers($domain,'library');
9936: foreach my $tryserver (keys(%servers)) {
9937: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
9938: push(@homeservers,$tryserver);
9939: }
9940: }
9941:
9942: my $response;
9943: foreach my $server (@homeservers) {
9944: $response=&reply('autoinstcodedefaults:'.$domain,$server);
9945: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
9946:
9947: foreach my $pair (split(/\&/,$response)) {
9948: my ($name,$value)=split(/\=/,$pair);
9949: if ($name eq 'code_order') {
9950: @{$code_order} = split(/\&/,&unescape($value));
9951: } else {
9952: $returnhash->{&unescape($name)}=&unescape($value);
9953: }
9954: }
9955: return 'ok';
9956: }
9957:
9958: return $response;
9959: }
9960:
9961: sub auto_possible_instcodes {
9962: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
9963: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
9964: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
9965: return;
9966: }
9967: my (@homeservers,$uhome);
9968: if (defined(&domain($domain,'primary'))) {
9969: $uhome=&domain($domain,'primary');
9970: push(@homeservers,&domain($domain,'primary'));
9971: } else {
9972: my %servers = &get_servers($domain,'library');
9973: foreach my $tryserver (keys(%servers)) {
9974: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
9975: push(@homeservers,$tryserver);
9976: }
9977: }
9978: }
9979: my $response;
9980: foreach my $server (@homeservers) {
9981: $response=&reply('autopossibleinstcodes:'.$domain,$server);
9982: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
9983: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
9984: split(':',$response);
9985: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
9986: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
9987: foreach my $item (split('&',$cat_title)) {
9988: my ($name,$value)=split('=',$item);
9989: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
9990: }
9991: foreach my $item (split('&',$cat_order)) {
9992: my ($name,$value)=split('=',$item);
9993: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
9994: }
9995: return 'ok';
9996: }
9997: return $response;
9998: }
9999:
10000: sub auto_courserequest_checks {
10001: my ($dom) = @_;
10002: my ($homeserver,%validations);
10003: if ($dom =~ /^$match_domain$/) {
10004: $homeserver = &domain($dom,'primary');
10005: }
10006: unless ($homeserver eq 'no_host') {
10007: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
10008: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
10009: my @items = split(/&/,$response);
10010: foreach my $item (@items) {
10011: my ($key,$value) = split('=',$item);
10012: $validations{&unescape($key)} = &thaw_unescape($value);
10013: }
10014: }
10015: }
10016: return %validations;
10017: }
10018:
10019: sub auto_courserequest_validation {
10020: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$custominfo) = @_;
10021: my ($homeserver,$response);
10022: if ($dom =~ /^$match_domain$/) {
10023: $homeserver = &domain($dom,'primary');
10024: }
10025: unless ($homeserver eq 'no_host') {
10026: my $customdata;
10027: if (ref($custominfo) eq 'HASH') {
10028: $customdata = &freeze_escape($custominfo);
10029: }
10030: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
10031: ':'.&escape($crstype).':'.&escape($inststatuslist).
10032: ':'.&escape($instcode).':'.&escape($instseclist).':'.
10033: $customdata,$homeserver));
10034: }
10035: return $response;
10036: }
10037:
10038: sub auto_validate_class_sec {
10039: my ($cdom,$cnum,$owners,$inst_class) = @_;
10040: my $homeserver = &homeserver($cnum,$cdom);
10041: my $ownerlist;
10042: if (ref($owners) eq 'ARRAY') {
10043: $ownerlist = join(',',@{$owners});
10044: } else {
10045: $ownerlist = $owners;
10046: }
10047: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
10048: &escape($ownerlist).':'.$cdom,$homeserver);
10049: return $response;
10050: }
10051:
10052: sub auto_instsec_reformat {
10053: my ($cdom,$action,$instsecref) = @_;
10054: return unless(($action eq 'clutter') || ($action eq 'declutter'));
10055: my @homeservers;
10056: if (defined(&domain($cdom,'primary'))) {
10057: push(@homeservers,&domain($cdom,'primary'));
10058: } else {
10059: my %servers = &get_servers($cdom,'library');
10060: foreach my $tryserver (keys(%servers)) {
10061: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
10062: push(@homeservers,$tryserver);
10063: }
10064: }
10065: }
10066: my $response;
10067: my %reformatted = %{$instsecref};
10068: foreach my $server (@homeservers) {
10069: if (ref($instsecref) eq 'HASH') {
10070: my $info = &freeze_escape($instsecref);
10071: my $response=&reply('autoinstsecreformat:'.$cdom.':'.
10072: $action.':'.$info,$server);
10073: next if ($response =~ /(con_lost|error|no_such_host|refused|unknown_command)/);
10074: my @items = split(/&/,$response);
10075: foreach my $item (@items) {
10076: my ($key,$value) = split(/=/,$item);
10077: $reformatted{&unescape($key)} = &thaw_unescape($value);
10078: }
10079: }
10080: }
10081: return %reformatted;
10082: }
10083:
10084: sub auto_validate_instclasses {
10085: my ($cdom,$cnum,$owners,$classesref) = @_;
10086: my ($homeserver,%validations);
10087: $homeserver = &homeserver($cnum,$cdom);
10088: unless ($homeserver eq 'no_host') {
10089: my $ownerlist;
10090: if (ref($owners) eq 'ARRAY') {
10091: $ownerlist = join(',',@{$owners});
10092: } else {
10093: $ownerlist = $owners;
10094: }
10095: if (ref($classesref) eq 'HASH') {
10096: my $classes = &freeze_escape($classesref);
10097: my $response=&reply('autovalidateinstclasses:'.&escape($ownerlist).
10098: ':'.$cdom.':'.$classes,$homeserver);
10099: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
10100: my @items = split(/&/,$response);
10101: foreach my $item (@items) {
10102: my ($key,$value) = split('=',$item);
10103: $validations{&unescape($key)} = &thaw_unescape($value);
10104: }
10105: }
10106: }
10107: }
10108: return %validations;
10109: }
10110:
10111: sub auto_crsreq_update {
10112: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,
10113: $code,$accessstart,$accessend,$inbound) = @_;
10114: my ($homeserver,%crsreqresponse);
10115: if ($cdom =~ /^$match_domain$/) {
10116: $homeserver = &domain($cdom,'primary');
10117: }
10118: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
10119: my $info;
10120: if (ref($inbound) eq 'HASH') {
10121: $info = &freeze_escape($inbound);
10122: }
10123: my $response=&reply('autocrsrequpdate:'.$cdom.':'.$cnum.':'.&escape($crstype).
10124: ':'.&escape($action).':'.&escape($ownername).':'.
10125: &escape($ownerdomain).':'.&escape($fullname).':'.
10126: &escape($title).':'.&escape($code).':'.
10127: &escape($accessstart).':'.&escape($accessend).':'.$info,
10128: $homeserver);
10129: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
10130: my @items = split(/&/,$response);
10131: foreach my $item (@items) {
10132: my ($key,$value) = split('=',$item);
10133: $crsreqresponse{&unescape($key)} = &thaw_unescape($value);
10134: }
10135: }
10136: }
10137: return \%crsreqresponse;
10138: }
10139:
10140: sub auto_export_grades {
10141: my ($cdom,$cnum,$inforef,$gradesref) = @_;
10142: my ($homeserver,%exportresponse);
10143: if ($cdom =~ /^$match_domain$/) {
10144: $homeserver = &domain($cdom,'primary');
10145: }
10146: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
10147: my $info;
10148: if (ref($inforef) eq 'HASH') {
10149: $info = &freeze_escape($inforef);
10150: }
10151: if (ref($gradesref) eq 'HASH') {
10152: my $grades = &freeze_escape($gradesref);
10153: my $response=&reply('encrypt:autoexportgrades:'.$cdom.':'.$cnum.':'.
10154: $info.':'.$grades,$homeserver);
10155: unless ($response =~ /(con_lost|error|no_such_host|refused|unknown_command)/) {
10156: my @items = split(/&/,$response);
10157: foreach my $item (@items) {
10158: my ($key,$value) = split('=',$item);
10159: $exportresponse{&unescape($key)} = &thaw_unescape($value);
10160: }
10161: }
10162: }
10163: }
10164: return \%exportresponse;
10165: }
10166:
10167: sub check_instcode_cloning {
10168: my ($codedefaults,$code_order,$cloner,$clonefromcode,$clonetocode) = @_;
10169: unless ((ref($codedefaults) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
10170: return;
10171: }
10172: my $canclone;
10173: if (@{$code_order} > 0) {
10174: my $instcoderegexp ='^';
10175: my @clonecodes = split(/\&/,$cloner);
10176: foreach my $item (@{$code_order}) {
10177: if (grep(/^\Q$item\E=/,@clonecodes)) {
10178: foreach my $pair (@clonecodes) {
10179: my ($key,$val) = split(/\=/,$pair,2);
10180: $val = &unescape($val);
10181: if ($key eq $item) {
10182: $instcoderegexp .= '('.$val.')';
10183: last;
10184: }
10185: }
10186: } else {
10187: $instcoderegexp .= $codedefaults->{$item};
10188: }
10189: }
10190: $instcoderegexp .= '$';
10191: my (@from,@to);
10192: eval {
10193: (@from) = ($clonefromcode =~ /$instcoderegexp/);
10194: (@to) = ($clonetocode =~ /$instcoderegexp/);
10195: };
10196: if ((@from > 0) && (@to > 0)) {
10197: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
10198: if (!@diffs) {
10199: $canclone = 1;
10200: }
10201: }
10202: }
10203: return $canclone;
10204: }
10205:
10206: sub default_instcode_cloning {
10207: my ($clonedom,$domdefclone,$clonefromcode,$clonetocode,$codedefaultsref,$codeorderref) = @_;
10208: my (%codedefaults,@code_order,$canclone);
10209: if ((ref($codedefaultsref) eq 'HASH') && (ref($codeorderref) eq 'ARRAY')) {
10210: %codedefaults = %{$codedefaultsref};
10211: @code_order = @{$codeorderref};
10212: } elsif ($clonedom) {
10213: &auto_instcode_defaults($clonedom,\%codedefaults,\@code_order);
10214: }
10215: if (($domdefclone) && (@code_order)) {
10216: my @clonecodes = split(/\+/,$domdefclone);
10217: my $instcoderegexp ='^';
10218: foreach my $item (@code_order) {
10219: if (grep(/^\Q$item\E$/,@clonecodes)) {
10220: $instcoderegexp .= '('.$codedefaults{$item}.')';
10221: } else {
10222: $instcoderegexp .= $codedefaults{$item};
10223: }
10224: }
10225: $instcoderegexp .= '$';
10226: my (@from,@to);
10227: eval {
10228: (@from) = ($clonefromcode =~ /$instcoderegexp/);
10229: (@to) = ($clonetocode =~ /$instcoderegexp/);
10230: };
10231: if ((@from > 0) && (@to > 0)) {
10232: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
10233: if (!@diffs) {
10234: $canclone = 1;
10235: }
10236: }
10237: }
10238: return $canclone;
10239: }
10240:
10241: # ------------------------------------------------------- Course Group routines
10242:
10243: sub get_coursegroups {
10244: my ($cdom,$cnum,$group,$namespace) = @_;
10245: return(&dump($namespace,$cdom,$cnum,$group));
10246: }
10247:
10248: sub modify_coursegroup {
10249: my ($cdom,$cnum,$groupsettings) = @_;
10250: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
10251: }
10252:
10253: sub toggle_coursegroup_status {
10254: my ($cdom,$cnum,$group,$action) = @_;
10255: my ($from_namespace,$to_namespace);
10256: if ($action eq 'delete') {
10257: $from_namespace = 'coursegroups';
10258: $to_namespace = 'deleted_groups';
10259: } else {
10260: $from_namespace = 'deleted_groups';
10261: $to_namespace = 'coursegroups';
10262: }
10263: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
10264: if (my $tmp = &error(%curr_group)) {
10265: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
10266: return ('read error',$tmp);
10267: } else {
10268: my %savedsettings = %curr_group;
10269: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
10270: my $deloutcome;
10271: if ($result eq 'ok') {
10272: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
10273: } else {
10274: return ('write error',$result);
10275: }
10276: if ($deloutcome eq 'ok') {
10277: return 'ok';
10278: } else {
10279: return ('delete error',$deloutcome);
10280: }
10281: }
10282: }
10283:
10284: sub modify_group_roles {
10285: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
10286: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
10287: my $role = 'gr/'.&escape($userprivs);
10288: my ($uname,$udom) = split(/:/,$user);
10289: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
10290: if ($result eq 'ok') {
10291: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
10292: }
10293: return $result;
10294: }
10295:
10296: sub modify_coursegroup_membership {
10297: my ($cdom,$cnum,$membership) = @_;
10298: my $result = &put('groupmembership',$membership,$cdom,$cnum);
10299: return $result;
10300: }
10301:
10302: sub get_active_groups {
10303: my ($udom,$uname,$cdom,$cnum) = @_;
10304: my $now = time;
10305: my %groups = ();
10306: foreach my $key (keys(%env)) {
10307: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
10308: my ($start,$end) = split(/\./,$env{$key});
10309: if (($end!=0) && ($end<$now)) { next; }
10310: if (($start!=0) && ($start>$now)) { next; }
10311: if ($1 eq $cdom && $2 eq $cnum) {
10312: $groups{$3} = $env{$key} ;
10313: }
10314: }
10315: }
10316: return %groups;
10317: }
10318:
10319: sub get_group_membership {
10320: my ($cdom,$cnum,$group) = @_;
10321: return(&dump('groupmembership',$cdom,$cnum,$group));
10322: }
10323:
10324: sub get_users_groups {
10325: my ($udom,$uname,$courseid) = @_;
10326: my @usersgroups;
10327: my $cachetime=1800;
10328:
10329: my $hashid="$udom:$uname:$courseid";
10330: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
10331: if (defined($cached)) {
10332: @usersgroups = split(/:/,$grouplist);
10333: } else {
10334: $grouplist = '';
10335: my $courseurl = &courseid_to_courseurl($courseid);
10336: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
10337: my $access_end = $env{'course.'.$courseid.
10338: '.default_enrollment_end_date'};
10339: my $now = time;
10340: foreach my $key (keys(%roleshash)) {
10341: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
10342: my $group = $1;
10343: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
10344: my $start = $2;
10345: my $end = $1;
10346: if ($start == -1) { next; } # deleted from group
10347: if (($start!=0) && ($start>$now)) { next; }
10348: if (($end!=0) && ($end<$now)) {
10349: if ($access_end && $access_end < $now) {
10350: if ($access_end - $end < 86400) {
10351: push(@usersgroups,$group);
10352: }
10353: }
10354: next;
10355: }
10356: push(@usersgroups,$group);
10357: }
10358: }
10359: }
10360: @usersgroups = &sort_course_groups($courseid,@usersgroups);
10361: $grouplist = join(':',@usersgroups);
10362: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
10363: }
10364: return @usersgroups;
10365: }
10366:
10367: sub devalidate_getgroups_cache {
10368: my ($udom,$uname,$cdom,$cnum)=@_;
10369: my $courseid = $cdom.'_'.$cnum;
10370:
10371: my $hashid="$udom:$uname:$courseid";
10372: &devalidate_cache_new('getgroups',$hashid);
10373: }
10374:
10375: # ------------------------------------------------------------------ Plain Text
10376:
10377: sub plaintext {
10378: my ($short,$type,$cid,$forcedefault) = @_;
10379: if ($short =~ m{^cr/}) {
10380: return (split('/',$short))[-1];
10381: }
10382: if (!defined($cid)) {
10383: $cid = $env{'request.course.id'};
10384: }
10385: my %rolenames = (
10386: Course => 'std',
10387: Community => 'alt1',
10388: Placement => 'std',
10389: );
10390: if ($cid ne '') {
10391: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
10392: unless ($forcedefault) {
10393: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
10394: &Apache::lonlocal::mt_escape(\$roletext);
10395: return &Apache::lonlocal::mt($roletext);
10396: }
10397: }
10398: }
10399: if ((defined($type)) && (defined($rolenames{$type})) &&
10400: (defined($rolenames{$type})) &&
10401: (defined($prp{$short}{$rolenames{$type}}))) {
10402: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
10403: } elsif ($cid ne '') {
10404: my $crstype = $env{'course.'.$cid.'.type'};
10405: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
10406: (defined($prp{$short}{$rolenames{$crstype}}))) {
10407: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
10408: }
10409: }
10410: return &Apache::lonlocal::mt($prp{$short}{'std'});
10411: }
10412:
10413: # ----------------------------------------------------------------- Assign Role
10414:
10415: sub assignrole {
10416: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
10417: $context)=@_;
10418: my $mrole;
10419: if ($role =~ /^cr\//) {
10420: my $cwosec=$url;
10421: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
10422: if ((!&allowed('ccr',$cwosec)) && (!&allowed('ccr',$udom))) {
10423: my $refused = 1;
10424: if ($context eq 'requestcourses') {
10425: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
10426: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
10427: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
10428: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
10429: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
10430: if ($crsenv{'internal.courseowner'} eq
10431: $env{'user.name'}.':'.$env{'user.domain'}) {
10432: $refused = '';
10433: }
10434: }
10435: }
10436: }
10437: }
10438: if ($refused) {
10439: &logthis('Refused custom assignrole: '.
10440: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
10441: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
10442: return 'refused';
10443: }
10444: }
10445: $mrole='cr';
10446: } elsif ($role =~ /^gr\//) {
10447: my $cwogrp=$url;
10448: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
10449: unless (&allowed('mdg',$cwogrp)) {
10450: &logthis('Refused group assignrole: '.
10451: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
10452: $env{'user.name'}.' at '.$env{'user.domain'});
10453: return 'refused';
10454: }
10455: $mrole='gr';
10456: } else {
10457: my $cwosec=$url;
10458: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
10459: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
10460: my $refused;
10461: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
10462: if (!(&allowed('c'.$role,$url))) {
10463: $refused = 1;
10464: }
10465: } else {
10466: $refused = 1;
10467: }
10468: if ($refused) {
10469: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
10470: if (!$selfenroll && (($context eq 'course') || ($context eq 'ltienroll' && $env{'request.lti.login'}))) {
10471: my %crsenv;
10472: if ($role eq 'cc' || $role eq 'co') {
10473: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
10474: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
10475: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
10476: if ($crsenv{'internal.courseowner'} eq
10477: $env{'user.name'}.':'.$env{'user.domain'}) {
10478: $refused = '';
10479: }
10480: }
10481: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
10482: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
10483: if ($crsenv{'internal.courseowner'} eq
10484: $env{'user.name'}.':'.$env{'user.domain'}) {
10485: $refused = '';
10486: }
10487: }
10488: }
10489: }
10490: } elsif (($selfenroll == 1) && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
10491: if ($role eq 'st') {
10492: $refused = '';
10493: } elsif (($context eq 'ltienroll') && ($env{'request.lti.login'})) {
10494: $refused = '';
10495: }
10496: } elsif ($context eq 'requestcourses') {
10497: my @possroles = ('st','ta','ep','in','cc','co');
10498: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
10499: my $wrongcc;
10500: if ($cnum =~ /^$match_community$/) {
10501: $wrongcc = 1 if ($role eq 'cc');
10502: } else {
10503: $wrongcc = 1 if ($role eq 'co');
10504: }
10505: unless ($wrongcc) {
10506: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
10507: if ($crsenv{'internal.courseowner'} eq
10508: $env{'user.name'}.':'.$env{'user.domain'}) {
10509: $refused = '';
10510: }
10511: }
10512: }
10513: } elsif ($context eq 'requestauthor') {
10514: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
10515: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
10516: if ($env{'environment.requestauthor'} eq 'automatic') {
10517: $refused = '';
10518: } else {
10519: my %domdefaults = &get_domain_defaults($udom);
10520: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
10521: my $checkbystatus;
10522: if ($env{'user.adv'}) {
10523: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
10524: if ($disposition eq 'automatic') {
10525: $refused = '';
10526: } elsif ($disposition eq '') {
10527: $checkbystatus = 1;
10528: }
10529: } else {
10530: $checkbystatus = 1;
10531: }
10532: if ($checkbystatus) {
10533: if ($env{'environment.inststatus'}) {
10534: my @inststatuses = split(/,/,$env{'environment.inststatus'});
10535: foreach my $type (@inststatuses) {
10536: if (($type ne '') &&
10537: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
10538: $refused = '';
10539: }
10540: }
10541: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
10542: $refused = '';
10543: }
10544: }
10545: }
10546: }
10547: }
10548: }
10549: if ($refused) {
10550: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
10551: ' '.$role.' '.$end.' '.$start.' by '.
10552: $env{'user.name'}.' at '.$env{'user.domain'});
10553: return 'refused';
10554: }
10555: }
10556: } elsif ($role eq 'au') {
10557: if ($url ne '/'.$udom.'/') {
10558: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
10559: ' to assign author role for '.$uname.':'.$udom.
10560: ' in domain: '.$url.' refused (wrong domain).');
10561: return 'refused';
10562: }
10563: }
10564: $mrole=$role;
10565: }
10566: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
10567: "$udom:$uname:$url".'_'."$mrole=$role";
10568: if ($end) { $command.='_'.$end; }
10569: if ($start) {
10570: if ($end) {
10571: $command.='_'.$start;
10572: } else {
10573: $command.='_0_'.$start;
10574: }
10575: }
10576: my $origstart = $start;
10577: my $origend = $end;
10578: my $delflag;
10579: # actually delete
10580: if ($deleteflag) {
10581: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
10582: # modify command to delete the role
10583: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
10584: "$udom:$uname:$url".'_'."$mrole";
10585: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
10586: # set start and finish to negative values for userrolelog
10587: $start=-1;
10588: $end=-1;
10589: $delflag = 1;
10590: }
10591: }
10592: # send command
10593: my $answer=&reply($command,&homeserver($uname,$udom));
10594: # log new user role if status is ok
10595: if ($answer eq 'ok') {
10596: &userrolelog($role,$uname,$udom,$url,$start,$end);
10597: if (($role eq 'cc') || ($role eq 'in') ||
10598: ($role eq 'ep') || ($role eq 'ad') ||
10599: ($role eq 'ta') || ($role eq 'st') ||
10600: ($role=~/^cr/) || ($role eq 'gr') ||
10601: ($role eq 'co')) {
10602: # for course roles, perform group memberships changes triggered by role change.
10603: unless ($role =~ /^gr/) {
10604: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
10605: $origstart,$selfenroll,$context);
10606: }
10607: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
10608: $selfenroll,$context);
10609: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
10610: ($role eq 'au') || ($role eq 'dc') || ($role eq 'dh') ||
10611: ($role eq 'da')) {
10612: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
10613: $context);
10614: } elsif (($role eq 'ca') || ($role eq 'aa')) {
10615: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
10616: $context);
10617: }
10618: if ($role eq 'cc') {
10619: &autoupdate_coowners($url,$end,$start,$uname,$udom);
10620: }
10621: }
10622: return $answer;
10623: }
10624:
10625: sub autoupdate_coowners {
10626: my ($url,$end,$start,$uname,$udom) = @_;
10627: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
10628: if (($cdom ne '') && ($cnum ne '')) {
10629: my $now = time;
10630: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
10631: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
10632: my %coursehash = &coursedescription($cdom.'_'.$cnum);
10633: my $instcode = $coursehash{'internal.coursecode'};
10634: my $xlists = $coursehash{'internal.crosslistings'};
10635: if ($instcode ne '') {
10636: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
10637: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
10638: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
10639: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
10640: unless ($result eq 'valid') {
10641: if ($xlists ne '') {
10642: foreach my $xlist (split(',',$xlists)) {
10643: my ($inst_crosslist,$lcsec) = split(':',$xlist);
10644: $result =
10645: &auto_validate_inst_crosslist($cnum,$cdom,$instcode,
10646: $inst_crosslist,$uname.':'.$udom);
10647: last if ($result eq 'valid');
10648: }
10649: }
10650: }
10651: if ($result eq 'valid') {
10652: if ($coursehash{'internal.co-owners'}) {
10653: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
10654: push(@newcoowners,$coowner);
10655: }
10656: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
10657: push(@newcoowners,$uname.':'.$udom);
10658: }
10659: @newcoowners = sort(@newcoowners);
10660: } else {
10661: push(@newcoowners,$uname.':'.$udom);
10662: }
10663: } elsif ($coursehash{'internal.co-owners'}) {
10664: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
10665: unless ($coowner eq $uname.':'.$udom) {
10666: push(@newcoowners,$coowner);
10667: }
10668: }
10669: unless (@newcoowners > 0) {
10670: $delcoowners = 1;
10671: $coowners = '';
10672: }
10673: }
10674: if (@newcoowners || $delcoowners) {
10675: &store_coowners($cdom,$cnum,$coursehash{'home'},
10676: $delcoowners,@newcoowners);
10677: }
10678: }
10679: }
10680: }
10681: }
10682: }
10683: }
10684:
10685: sub store_coowners {
10686: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
10687: my $cid = $cdom.'_'.$cnum;
10688: my ($coowners,$delresult,$putresult);
10689: if (@newcoowners) {
10690: $coowners = join(',',@newcoowners);
10691: my %coownershash = (
10692: 'internal.co-owners' => $coowners,
10693: );
10694: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
10695: if ($putresult eq 'ok') {
10696: if ($env{'course.'.$cid.'.num'} eq $cnum) {
10697: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
10698: }
10699: }
10700: }
10701: if ($delcoowners) {
10702: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
10703: if ($delresult eq 'ok') {
10704: if ($env{'course.'.$cid.'.internal.co-owners'}) {
10705: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
10706: }
10707: }
10708: }
10709: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
10710: my %crsinfo =
10711: &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
10712: if (ref($crsinfo{$cid}) eq 'HASH') {
10713: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
10714: my $cidput = &courseidput($cdom,\%crsinfo,$chome,'notime');
10715: }
10716: }
10717: }
10718:
10719: # -------------------------------------------------- Modify user authentication
10720: # Overrides without validation
10721:
10722: sub modifyuserauth {
10723: my ($udom,$uname,$umode,$upass)=@_;
10724: my $uhome=&homeserver($uname,$udom);
10725: my $allowed;
10726: if (&allowed('mau',$udom)) {
10727: $allowed = 1;
10728: } elsif (($umode eq 'internal') && ($udom eq $env{'user.domain'}) &&
10729: ($env{'request.course.id'}) && (&allowed('mip',$env{'request.course.id'})) &&
10730: (!$env{'course.'.$env{'request.course.id'}.'.internal.nopasswdchg'})) {
10731: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
10732: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
10733: if (($cdom ne '') && ($cnum ne '')) {
10734: my $is_owner = &is_course_owner($cdom,$cnum);
10735: if ($is_owner) {
10736: $allowed = 1;
10737: }
10738: }
10739: }
10740: unless ($allowed) { return 'refused'; }
10741: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
10742: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
10743: ' in domain '.$env{'request.role.domain'});
10744: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
10745: &escape($upass),$uhome);
10746: my $ip = &get_requestor_ip();
10747: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
10748: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
10749: '(Remote '.$ip.'): '.$reply);
10750: &log($udom,,$uname,$uhome,
10751: 'Authentication changed by '.$env{'user.domain'}.', '.
10752: $env{'user.name'}.', '.$umode.
10753: '(Remote '.$ip.'): '.$reply);
10754: unless ($reply eq 'ok') {
10755: &logthis('Authentication mode error: '.$reply);
10756: return 'error: '.$reply;
10757: }
10758: return 'ok';
10759: }
10760:
10761: # --------------------------------------------------------------- Modify a user
10762:
10763: sub modifyuser {
10764: my ($udom, $uname, $uid,
10765: $umode, $upass, $first,
10766: $middle, $last, $gene,
10767: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
10768: $udom= &LONCAPA::clean_domain($udom);
10769: $uname=&LONCAPA::clean_username($uname);
10770: my $showcandelete = 'none';
10771: if (ref($candelete) eq 'ARRAY') {
10772: if (@{$candelete} > 0) {
10773: $showcandelete = join(', ',@{$candelete});
10774: }
10775: }
10776: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
10777: $umode.', '.$first.', '.$middle.', '.
10778: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
10779: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
10780: ' desiredhome not specified').
10781: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
10782: ' in domain '.$env{'request.role.domain'});
10783: my $uhome=&homeserver($uname,$udom,'true');
10784: my $newuser;
10785: if ($uhome eq 'no_host') {
10786: $newuser = 1;
10787: unless (($umode && ($upass ne '')) || ($umode eq 'localauth') ||
10788: ($umode eq 'lti')) {
10789: return 'error: more information needed to create new user';
10790: }
10791: }
10792: # ----------------------------------------------------------------- Create User
10793: if (($uhome eq 'no_host') &&
10794: (($umode && $upass) || ($umode eq 'localauth') || ($umode eq 'lti'))) {
10795: my $unhome='';
10796: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
10797: $unhome = $desiredhome;
10798: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
10799: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
10800: } else { # load balancing routine for determining $unhome
10801: my $loadm=10000000;
10802: my %servers = &get_servers($udom,'library');
10803: foreach my $tryserver (keys(%servers)) {
10804: my $answer=reply('load',$tryserver);
10805: if (($answer=~/\d+/) && ($answer<$loadm)) {
10806: $loadm=$answer;
10807: $unhome=$tryserver;
10808: }
10809: }
10810: }
10811: if (($unhome eq '') || ($unhome eq 'no_host')) {
10812: return 'error: unable to find a home server for '.$uname.
10813: ' in domain '.$udom;
10814: }
10815: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
10816: &escape($upass),$unhome);
10817: unless ($reply eq 'ok') {
10818: return 'error: '.$reply;
10819: }
10820: $uhome=&homeserver($uname,$udom,'true');
10821: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
10822: return 'error: unable verify users home machine.';
10823: }
10824: } # End of creation of new user
10825: # ---------------------------------------------------------------------- Add ID
10826: if ($uid) {
10827: $uid=~tr/A-Z/a-z/;
10828: my %uidhash=&idrget($udom,$uname);
10829: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
10830: && (!$forceid)) {
10831: unless ($uid eq $uidhash{$uname}) {
10832: return 'error: user id "'.$uid.'" does not match '.
10833: 'current user id "'.$uidhash{$uname}.'".';
10834: }
10835: } else {
10836: &idput($udom,{$uname => $uid},$uhome,'ids');
10837: }
10838: }
10839: # -------------------------------------------------------------- Add names, etc
10840: my @tmp=&get('environment',
10841: ['firstname','middlename','lastname','generation','id',
10842: 'permanentemail','inststatus'],
10843: $udom,$uname);
10844: my (%names,%oldnames);
10845: if ($tmp[0] =~ m/^error:.*/) {
10846: %names=();
10847: } else {
10848: %names = @tmp;
10849: %oldnames = %names;
10850: }
10851: #
10852: # If name, email and/or uid are blank (e.g., because an uploaded file
10853: # of users did not contain them), do not overwrite existing values
10854: # unless field is in $candelete array ref.
10855: #
10856:
10857: my @fields = ('firstname','middlename','lastname','generation',
10858: 'permanentemail','id');
10859: my %newvalues;
10860: if (ref($candelete) eq 'ARRAY') {
10861: foreach my $field (@fields) {
10862: if (grep(/^\Q$field\E$/,@{$candelete})) {
10863: if ($field eq 'firstname') {
10864: $names{$field} = $first;
10865: } elsif ($field eq 'middlename') {
10866: $names{$field} = $middle;
10867: } elsif ($field eq 'lastname') {
10868: $names{$field} = $last;
10869: } elsif ($field eq 'generation') {
10870: $names{$field} = $gene;
10871: } elsif ($field eq 'permanentemail') {
10872: $names{$field} = $email;
10873: } elsif ($field eq 'id') {
10874: $names{$field} = $uid;
10875: }
10876: }
10877: }
10878: }
10879: if ($first) { $names{'firstname'} = $first; }
10880: if (defined($middle)) { $names{'middlename'} = $middle; }
10881: if ($last) { $names{'lastname'} = $last; }
10882: if (defined($gene)) { $names{'generation'} = $gene; }
10883: if ($email) {
10884: $email=~s/[^\w\@\.\-\,]//gs;
10885: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
10886: }
10887: if ($uid) { $names{'id'} = $uid; }
10888: if (defined($inststatus)) {
10889: $names{'inststatus'} = '';
10890: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
10891: if (ref($usertypes) eq 'HASH') {
10892: my @okstatuses;
10893: foreach my $item (split(/:/,$inststatus)) {
10894: if (defined($usertypes->{$item})) {
10895: push(@okstatuses,$item);
10896: }
10897: }
10898: if (@okstatuses) {
10899: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
10900: }
10901: }
10902: }
10903: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
10904: $umode.', '.$first.', '.$middle.', '.
10905: $last.', '.$gene.', '.$email.', '.$inststatus;
10906: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
10907: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
10908: } else {
10909: $logmsg .= ' during self creation';
10910: }
10911: my $changed;
10912: if ($newuser) {
10913: $changed = 1;
10914: } else {
10915: foreach my $field (@fields) {
10916: if ($names{$field} ne $oldnames{$field}) {
10917: $changed = 1;
10918: last;
10919: }
10920: }
10921: }
10922: unless ($changed) {
10923: $logmsg = 'No changes in user information needed for: '.$logmsg;
10924: &logthis($logmsg);
10925: return 'ok';
10926: }
10927: my $reply = &put('environment', \%names, $udom,$uname);
10928: if ($reply ne 'ok') {
10929: return 'error: '.$reply;
10930: }
10931: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
10932: &devalidate_cache_new('emailscache',$uname.':'.$udom);
10933: }
10934: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
10935: &devalidate_cache_new('namescache',$uname.':'.$udom);
10936: $logmsg = 'Success modifying user '.$logmsg;
10937: &logthis($logmsg);
10938: return 'ok';
10939: }
10940:
10941: # -------------------------------------------------------------- Modify student
10942:
10943: sub modifystudent {
10944: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
10945: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
10946: $selfenroll,$context,$inststatus,$credits,$instsec)=@_;
10947: if (!$cid) {
10948: unless ($cid=$env{'request.course.id'}) {
10949: return 'not_in_class';
10950: }
10951: }
10952: # --------------------------------------------------------------- Make the user
10953: my $reply=&modifyuser
10954: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
10955: $desiredhome,$email,$inststatus);
10956: unless ($reply eq 'ok') { return $reply; }
10957: # This will cause &modify_student_enrollment to get the uid from the
10958: # student's environment
10959: $uid = undef if (!$forceid);
10960: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
10961: $gene,$usec,$end,$start,$type,$locktype,
10962: $cid,$selfenroll,$context,$credits,$instsec);
10963: return $reply;
10964: }
10965:
10966: sub modify_student_enrollment {
10967: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
10968: $locktype,$cid,$selfenroll,$context,$credits,$instsec) = @_;
10969: my ($cdom,$cnum,$chome);
10970: if (!$cid) {
10971: unless ($cid=$env{'request.course.id'}) {
10972: return 'not_in_class';
10973: }
10974: $cdom=$env{'course.'.$cid.'.domain'};
10975: $cnum=$env{'course.'.$cid.'.num'};
10976: } else {
10977: ($cdom,$cnum)=split(/_/,$cid);
10978: }
10979: $chome=$env{'course.'.$cid.'.home'};
10980: if (!$chome) {
10981: $chome=&homeserver($cnum,$cdom);
10982: }
10983: if (!$chome) { return 'unknown_course'; }
10984: # Make sure the user exists
10985: my $uhome=&homeserver($uname,$udom);
10986: if (($uhome eq '') || ($uhome eq 'no_host')) {
10987: return 'error: no such user';
10988: }
10989: # Get student data if we were not given enough information
10990: if (!defined($first) || $first eq '' ||
10991: !defined($last) || $last eq '' ||
10992: !defined($uid) || $uid eq '' ||
10993: !defined($middle) || $middle eq '' ||
10994: !defined($gene) || $gene eq '') {
10995: # They did not supply us with enough data to enroll the student, so
10996: # we need to pick up more information.
10997: my %tmp = &get('environment',
10998: ['firstname','middlename','lastname', 'generation','id']
10999: ,$udom,$uname);
11000:
11001: #foreach my $key (keys(%tmp)) {
11002: # &logthis("key $key = ".$tmp{$key});
11003: #}
11004: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
11005: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
11006: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
11007: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
11008: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
11009: }
11010: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
11011: my $user = "$uname:$udom";
11012: my %old_entry = &get('classlist',[$user],$cdom,$cnum);
11013: my $reply=cput('classlist',
11014: {$user =>
11015: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits,$instsec) },
11016: $cdom,$cnum);
11017: if (($reply eq 'ok') || ($reply eq 'delayed')) {
11018: &devalidate_getsection_cache($udom,$uname,$cid);
11019: } else {
11020: return 'error: '.$reply;
11021: }
11022: # Add student role to user
11023: my $uurl='/'.$cid;
11024: $uurl=~s/\_/\//g;
11025: if ($usec) {
11026: $uurl.='/'.$usec;
11027: }
11028: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
11029: $selfenroll,$context);
11030: if ($result ne 'ok') {
11031: if ($old_entry{$user} ne '') {
11032: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
11033: } else {
11034: $reply = &del('classlist',[$user],$cdom,$cnum);
11035: }
11036: }
11037: return $result;
11038: }
11039:
11040: sub format_name {
11041: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
11042: my $name;
11043: if ($first ne 'lastname') {
11044: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
11045: } else {
11046: if ($lastname=~/\S/) {
11047: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
11048: $name=~s/\s+,/,/;
11049: } else {
11050: $name.= $firstname.' '.$middlename.' '.$generation;
11051: }
11052: }
11053: $name=~s/^\s+//;
11054: $name=~s/\s+$//;
11055: $name=~s/\s+/ /g;
11056: return $name;
11057: }
11058:
11059: # ------------------------------------------------- Write to course preferences
11060:
11061: sub writecoursepref {
11062: my ($courseid,%prefs)=@_;
11063: $courseid=~s/^\///;
11064: $courseid=~s/\_/\//g;
11065: my ($cdomain,$cnum)=split(/\//,$courseid);
11066: my $chome=homeserver($cnum,$cdomain);
11067: if (($chome eq '') || ($chome eq 'no_host')) {
11068: return 'error: no such course';
11069: }
11070: my $cstring='';
11071: foreach my $pref (keys(%prefs)) {
11072: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
11073: }
11074: $cstring=~s/\&$//;
11075: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
11076: }
11077:
11078: # ---------------------------------------------------------- Make/modify course
11079:
11080: sub createcourse {
11081: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
11082: $course_owner,$crstype,$cnum,$context,$category,$callercontext)=@_;
11083: $url=&declutter($url);
11084: my $cid='';
11085: if ($context eq 'requestcourses') {
11086: my $can_create = 0;
11087: my ($ownername,$ownerdom) = split(':',$course_owner);
11088: if ($udom eq $ownerdom) {
11089: my $reload;
11090: if (($callercontext eq 'auto') &&
11091: ($ownerdom eq $env{'user.domain'}) && ($ownername eq $env{'user.name'})) {
11092: $reload = 'reload';
11093: }
11094: if (&usertools_access($ownername,$ownerdom,$category,$reload,
11095: $context)) {
11096: $can_create = 1;
11097: }
11098: } else {
11099: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
11100: $category);
11101: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
11102: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
11103: if (@curr > 0) {
11104: my @options = qw(approval validate autolimit);
11105: my $optregex = join('|',@options);
11106: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
11107: $can_create = 1;
11108: }
11109: }
11110: }
11111: }
11112: if ($can_create) {
11113: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
11114: unless (&allowed('ccc',$udom)) {
11115: return 'refused';
11116: }
11117: }
11118: } else {
11119: return 'refused';
11120: }
11121: } elsif (!&allowed('ccc',$udom)) {
11122: return 'refused';
11123: }
11124: # --------------------------------------------------------------- Get Unique ID
11125: my $uname;
11126: if ($cnum =~ /^$match_courseid$/) {
11127: my $chome=&homeserver($cnum,$udom,'true');
11128: if (($chome eq '') || ($chome eq 'no_host')) {
11129: $uname = $cnum;
11130: } else {
11131: $uname = &generate_coursenum($udom,$crstype);
11132: }
11133: } else {
11134: $uname = &generate_coursenum($udom,$crstype);
11135: }
11136: return $uname if ($uname =~ /^error/);
11137: # -------------------------------------------------- Check supplied server name
11138: if (!defined($course_server)) {
11139: if (defined(&domain($udom,'primary'))) {
11140: $course_server = &domain($udom,'primary');
11141: } else {
11142: $course_server = $env{'user.home'};
11143: }
11144: }
11145: my %host_servers =
11146: &get_servers($udom,'library');
11147: unless ($host_servers{$course_server}) {
11148: return 'error: invalid home server for course: '.$course_server;
11149: }
11150: # ------------------------------------------------------------- Make the course
11151: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
11152: $course_server);
11153: unless ($reply eq 'ok') { return 'error: '.$reply; }
11154: my $uhome=&homeserver($uname,$udom,'true');
11155: if (($uhome eq '') || ($uhome eq 'no_host')) {
11156: return 'error: no such course';
11157: }
11158: # ----------------------------------------------------------------- Course made
11159: # log existence
11160: my $now = time;
11161: my $newcourse = {
11162: $udom.'_'.$uname => {
11163: description => $description,
11164: inst_code => $inst_code,
11165: owner => $course_owner,
11166: type => $crstype,
11167: creator => $env{'user.name'}.':'.
11168: $env{'user.domain'},
11169: created => $now,
11170: context => $context,
11171: },
11172: };
11173: &courseidput($udom,$newcourse,$uhome,'notime');
11174: # set toplevel url
11175: my $topurl=$url;
11176: unless ($nonstandard) {
11177: # ------------------------------------------ For standard courses, make top url
11178: my $mapurl=&clutter($url);
11179: if ($mapurl eq '/res/') { $mapurl=''; }
11180: $env{'form.initmap'}=(<<ENDINITMAP);
11181: <map>
11182: <resource id="1" type="start"></resource>
11183: <resource id="2" src="$mapurl"></resource>
11184: <resource id="3" type="finish"></resource>
11185: <link index="1" from="1" to="2"></link>
11186: <link index="2" from="2" to="3"></link>
11187: </map>
11188: ENDINITMAP
11189: $topurl=&declutter(
11190: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
11191: );
11192: }
11193: # ----------------------------------------------------------- Write preferences
11194: &writecoursepref($udom.'_'.$uname,
11195: ('description' => $description,
11196: 'url' => $topurl,
11197: 'internal.creator' => $env{'user.name'}.':'.
11198: $env{'user.domain'},
11199: 'internal.created' => $now,
11200: 'internal.creationcontext' => $context)
11201: );
11202: return '/'.$udom.'/'.$uname;
11203: }
11204:
11205: # ------------------------------------------------------------------- Create ID
11206: sub generate_coursenum {
11207: my ($udom,$crstype) = @_;
11208: my $domdesc = &domain($udom);
11209: return 'error: invalid domain' if ($domdesc eq '');
11210: my $first;
11211: if ($crstype eq 'Community') {
11212: $first = '0';
11213: } else {
11214: $first = int(1+rand(9));
11215: }
11216: my $uname=$first.
11217: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
11218: substr($$.time,0,5).unpack("H8",pack("I32",time)).
11219: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
11220: # ----------------------------------------------- Make sure that does not exist
11221: my $uhome=&homeserver($uname,$udom,'true');
11222: unless (($uhome eq '') || ($uhome eq 'no_host')) {
11223: if ($crstype eq 'Community') {
11224: $first = '0';
11225: } else {
11226: $first = int(1+rand(9));
11227: }
11228: $uname=$first.
11229: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
11230: substr($$.time,0,5).unpack("H8",pack("I32",time)).
11231: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
11232: $uhome=&homeserver($uname,$udom,'true');
11233: unless (($uhome eq '') || ($uhome eq 'no_host')) {
11234: return 'error: unable to generate unique course-ID';
11235: }
11236: }
11237: return $uname;
11238: }
11239:
11240: sub is_course {
11241: my ($cdom, $cnum) = scalar(@_) == 1 ?
11242: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
11243:
11244: return unless (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/));
11245: my $uhome=&homeserver($cnum,$cdom);
11246: my $iscourse;
11247: if (grep { $_ eq $uhome } current_machine_ids()) {
11248: $iscourse = &LONCAPA::Lond::is_course($cdom,$cnum);
11249: } else {
11250: my $hashid = $cdom.':'.$cnum;
11251: ($iscourse,my $cached) = &is_cached_new('iscourse',$hashid);
11252: unless (defined($cached)) {
11253: my %courses = &courseiddump($cdom, '.', 1, '.', '.',
11254: $cnum,undef,undef,'.');
11255: $iscourse = 0;
11256: if (exists($courses{$cdom.'_'.$cnum})) {
11257: $iscourse = 1;
11258: }
11259: &do_cache_new('iscourse',$hashid,$iscourse,3600);
11260: }
11261: }
11262: return unless ($iscourse);
11263: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
11264: }
11265:
11266: sub store_userdata {
11267: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
11268: my $result;
11269: if ($datakey ne '') {
11270: if (ref($storehash) eq 'HASH') {
11271: if ($udom eq '' || $uname eq '') {
11272: $udom = $env{'user.domain'};
11273: $uname = $env{'user.name'};
11274: }
11275: my $uhome=&homeserver($uname,$udom);
11276: if (($uhome eq '') || ($uhome eq 'no_host')) {
11277: $result = 'error: no_host';
11278: } else {
11279: $storehash->{'ip'} = &get_requestor_ip();
11280: $storehash->{'host'} = $perlvar{'lonHostID'};
11281:
11282: my $namevalue='';
11283: foreach my $key (keys(%{$storehash})) {
11284: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
11285: }
11286: $namevalue=~s/\&$//;
11287: unless ($namespace eq 'courserequests') {
11288: $datakey = &escape($datakey);
11289: }
11290: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
11291: $namevalue,$uhome);
11292: }
11293: } else {
11294: $result = 'error: data to store was not a hash reference';
11295: }
11296: } else {
11297: $result= 'error: invalid requestkey';
11298: }
11299: return $result;
11300: }
11301:
11302: # ---------------------------------------------------------- Assign Custom Role
11303:
11304: sub assigncustomrole {
11305: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
11306: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
11307: $end,$start,$deleteflag,$selfenroll,$context);
11308: }
11309:
11310: # ----------------------------------------------------------------- Revoke Role
11311:
11312: sub revokerole {
11313: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
11314: my $now=time;
11315: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
11316: }
11317:
11318: # ---------------------------------------------------------- Revoke Custom Role
11319:
11320: sub revokecustomrole {
11321: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
11322: my $now=time;
11323: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
11324: $deleteflag,$selfenroll,$context);
11325: }
11326:
11327: # ------------------------------------------------------------ Disk usage
11328: sub diskusage {
11329: my ($udom,$uname,$directorypath,$getpropath)=@_;
11330: $directorypath =~ s/\/$//;
11331: my $listing=&reply('du2:'.&escape($directorypath).':'
11332: .&escape($getpropath).':'.&escape($uname).':'
11333: .&escape($udom),homeserver($uname,$udom));
11334: if ($listing eq 'unknown_cmd') {
11335: if ($getpropath) {
11336: $directorypath = &propath($udom,$uname).'/'.$directorypath;
11337: }
11338: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
11339: }
11340: return $listing;
11341: }
11342:
11343: sub is_locked {
11344: my ($file_name, $domain, $user, $which) = @_;
11345: my @check;
11346: my $is_locked;
11347: push (@check,$file_name);
11348: my %locked = &get('file_permissions',\@check,
11349: $env{'user.domain'},$env{'user.name'});
11350: my ($tmp)=keys(%locked);
11351: if ($tmp=~/^error:/) { undef(%locked); }
11352:
11353: if (ref($locked{$file_name}) eq 'ARRAY') {
11354: $is_locked = 'false';
11355: foreach my $entry (@{$locked{$file_name}}) {
11356: if (ref($entry) eq 'ARRAY') {
11357: $is_locked = 'true';
11358: if (ref($which) eq 'ARRAY') {
11359: push(@{$which},$entry);
11360: } else {
11361: last;
11362: }
11363: }
11364: }
11365: } else {
11366: $is_locked = 'false';
11367: }
11368: return $is_locked;
11369: }
11370:
11371: sub declutter_portfile {
11372: my ($file) = @_;
11373: $file =~ s{^(/portfolio/|portfolio/)}{/};
11374: return $file;
11375: }
11376:
11377: # ------------------------------------------------------------- Mark as Read Only
11378:
11379: sub mark_as_readonly {
11380: my ($domain,$user,$files,$what) = @_;
11381: my %current_permissions = &dump('file_permissions',$domain,$user);
11382: my ($tmp)=keys(%current_permissions);
11383: if ($tmp=~/^error:/) { undef(%current_permissions); }
11384: foreach my $file (@{$files}) {
11385: $file = &declutter_portfile($file);
11386: push(@{$current_permissions{$file}},$what);
11387: }
11388: &put('file_permissions',\%current_permissions,$domain,$user);
11389: return;
11390: }
11391:
11392: # ------------------------------------------------------------Save Selected Files
11393:
11394: sub save_selected_files {
11395: my ($user, $path, @files) = @_;
11396: my $filename = $user."savedfiles";
11397: my @other_files = &files_not_in_path($user, $path);
11398: open (OUT,'>',LONCAPA::tempdir().$filename);
11399: foreach my $file (@files) {
11400: print (OUT $env{'form.currentpath'}.$file."\n");
11401: }
11402: foreach my $file (@other_files) {
11403: print (OUT $file."\n");
11404: }
11405: close (OUT);
11406: return 'ok';
11407: }
11408:
11409: sub clear_selected_files {
11410: my ($user) = @_;
11411: my $filename = $user."savedfiles";
11412: open (OUT,'>',LONCAPA::tempdir().$filename);
11413: print (OUT undef);
11414: close (OUT);
11415: return ("ok");
11416: }
11417:
11418: sub files_in_path {
11419: my ($user, $path) = @_;
11420: my $filename = $user."savedfiles";
11421: my %return_files;
11422: open (IN,'<',LONCAPA::tempdir().$filename);
11423: while (my $line_in = <IN>) {
11424: chomp ($line_in);
11425: my @paths_and_file = split (m!/!, $line_in);
11426: my $file_part = pop (@paths_and_file);
11427: my $path_part = join ('/', @paths_and_file);
11428: $path_part.='/';
11429: my $path_and_file = $path_part.$file_part;
11430: if ($path_part eq $path) {
11431: $return_files{$file_part}= 'selected';
11432: }
11433: }
11434: close (IN);
11435: return (\%return_files);
11436: }
11437:
11438: # called in portfolio select mode, to show files selected NOT in current directory
11439: sub files_not_in_path {
11440: my ($user, $path) = @_;
11441: my $filename = $user."savedfiles";
11442: my @return_files;
11443: my $path_part;
11444: open(IN, '<',LONCAPA::tempdir().$filename);
11445: while (my $line = <IN>) {
11446: #ok, I know it's clunky, but I want it to work
11447: my @paths_and_file = split(m|/|, $line);
11448: my $file_part = pop(@paths_and_file);
11449: chomp($file_part);
11450: my $path_part = join('/', @paths_and_file);
11451: $path_part .= '/';
11452: my $path_and_file = $path_part.$file_part;
11453: if ($path_part ne $path) {
11454: push(@return_files, ($path_and_file));
11455: }
11456: }
11457: close(OUT);
11458: return (@return_files);
11459: }
11460:
11461: #------------------------------Submitted/Handedback Portfolio Files Versioning
11462:
11463: sub portfiles_versioning {
11464: my ($symb,$domain,$stu_name,$portfiles,$versioned_portfiles) = @_;
11465: my $portfolio_root = '/userfiles/portfolio';
11466: return unless ((ref($portfiles) eq 'ARRAY') && (ref($versioned_portfiles) eq 'ARRAY'));
11467: foreach my $file (@{$portfiles}) {
11468: &unmark_as_readonly($domain,$stu_name,[$symb,$env{'request.course.id'}],$file);
11469: my ($directory,$answer_file) =($file =~ /^(.*?)([^\/]*)$/);
11470: my ($answer_name,$answer_ver,$answer_ext) = &file_name_version_ext($answer_file);
11471: my $getpropath = 1;
11472: my ($dir_list,$listerror) = &dirlist($portfolio_root.$directory,$domain,
11473: $stu_name,$getpropath);
11474: my $version = &get_next_version($answer_name,$answer_ext,$dir_list);
11475: my $new_answer =
11476: &version_selected_portfile($domain,$stu_name,$directory,$answer_file,$version);
11477: if ($new_answer ne 'problem getting file') {
11478: push(@{$versioned_portfiles}, $directory.$new_answer);
11479: &mark_as_readonly($domain,$stu_name,[$directory.$new_answer],
11480: [$symb,$env{'request.course.id'},'graded']);
11481: }
11482: }
11483: }
11484:
11485: sub get_next_version {
11486: my ($answer_name, $answer_ext, $dir_list) = @_;
11487: my $version;
11488: if (ref($dir_list) eq 'ARRAY') {
11489: foreach my $row (@{$dir_list}) {
11490: my ($file) = split(/\&/,$row,2);
11491: my ($file_name,$file_version,$file_ext) =
11492: &file_name_version_ext($file);
11493: if (($file_name eq $answer_name) &&
11494: ($file_ext eq $answer_ext)) {
11495: # gets here if filename and extension match,
11496: # regardless of version
11497: if ($file_version ne '') {
11498: # a versioned file is found so save it for later
11499: if ($file_version > $version) {
11500: $version = $file_version;
11501: }
11502: }
11503: }
11504: }
11505: }
11506: $version ++;
11507: return($version);
11508: }
11509:
11510: sub version_selected_portfile {
11511: my ($domain,$stu_name,$directory,$file_name,$version) = @_;
11512: my ($answer_name,$answer_ver,$answer_ext) =
11513: &file_name_version_ext($file_name);
11514: my $new_answer;
11515: $env{'form.copy'} =
11516: &getfile("/uploaded/$domain/$stu_name/portfolio$directory$file_name");
11517: if($env{'form.copy'} eq '-1') {
11518: $new_answer = 'problem getting file';
11519: } else {
11520: $new_answer = $answer_name.'.'.$version.'.'.$answer_ext;
11521: my $copy_result =
11522: &finishuserfileupload($stu_name,$domain,'copy',
11523: '/portfolio'.$directory.$new_answer);
11524: }
11525: undef($env{'form.copy'});
11526: return ($new_answer);
11527: }
11528:
11529: sub file_name_version_ext {
11530: my ($file)=@_;
11531: my @file_parts = split(/\./, $file);
11532: my ($name,$version,$ext);
11533: if (@file_parts > 1) {
11534: $ext=pop(@file_parts);
11535: if (@file_parts > 1 && $file_parts[-1] =~ /^\d+$/) {
11536: $version=pop(@file_parts);
11537: }
11538: $name=join('.',@file_parts);
11539: } else {
11540: $name=join('.',@file_parts);
11541: }
11542: return($name,$version,$ext);
11543: }
11544:
11545: #----------------------------------------------Get portfolio file permissions
11546:
11547: sub get_portfile_permissions {
11548: my ($domain,$user) = @_;
11549: my %current_permissions = &dump('file_permissions',$domain,$user);
11550: my ($tmp)=keys(%current_permissions);
11551: if ($tmp=~/^error:/) { undef(%current_permissions); }
11552: return \%current_permissions;
11553: }
11554:
11555: #---------------------------------------------Get portfolio file access controls
11556:
11557: sub get_access_controls {
11558: my ($current_permissions,$group,$file) = @_;
11559: my %access;
11560: my $real_file = $file;
11561: $file =~ s/\.meta$//;
11562: if (defined($file)) {
11563: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
11564: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
11565: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
11566: }
11567: }
11568: } else {
11569: foreach my $key (keys(%{$current_permissions})) {
11570: if ($key =~ /\0accesscontrol$/) {
11571: if (defined($group)) {
11572: if ($key !~ m-^\Q$group\E/-) {
11573: next;
11574: }
11575: }
11576: my ($fullpath) = split(/\0/,$key);
11577: if (ref($$current_permissions{$key}) eq 'HASH') {
11578: foreach my $control (keys(%{$$current_permissions{$key}})) {
11579: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
11580: }
11581: }
11582: }
11583: }
11584: }
11585: return %access;
11586: }
11587:
11588: sub modify_access_controls {
11589: my ($file_name,$changes,$domain,$user)=@_;
11590: my ($outcome,$deloutcome);
11591: my %store_permissions;
11592: my %new_values;
11593: my %new_control;
11594: my %translation;
11595: my @deletions = ();
11596: my $now = time;
11597: if (exists($$changes{'activate'})) {
11598: if (ref($$changes{'activate'}) eq 'HASH') {
11599: my @newitems = sort(keys(%{$$changes{'activate'}}));
11600: my $numnew = scalar(@newitems);
11601: for (my $i=0; $i<$numnew; $i++) {
11602: my $newkey = $newitems[$i];
11603: my $newid = &Apache::loncommon::get_cgi_id();
11604: if ($newkey =~ /^\d+:/) {
11605: $newkey =~ s/^(\d+)/$newid/;
11606: $translation{$1} = $newid;
11607: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
11608: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
11609: $translation{$1} = $newid;
11610: }
11611: $new_values{$file_name."\0".$newkey} =
11612: $$changes{'activate'}{$newitems[$i]};
11613: $new_control{$newkey} = $now;
11614: }
11615: }
11616: }
11617: my %todelete;
11618: my %changed_items;
11619: foreach my $action ('delete','update') {
11620: if (exists($$changes{$action})) {
11621: if (ref($$changes{$action}) eq 'HASH') {
11622: foreach my $key (keys(%{$$changes{$action}})) {
11623: my ($itemnum) = ($key =~ /^([^:]+):/);
11624: if ($action eq 'delete') {
11625: $todelete{$itemnum} = 1;
11626: } else {
11627: $changed_items{$itemnum} = $key;
11628: }
11629: }
11630: }
11631: }
11632: }
11633: # get lock on access controls for file.
11634: my $lockhash = {
11635: $file_name."\0".'locked_access_records' => $env{'user.name'}.
11636: ':'.$env{'user.domain'},
11637: };
11638: my $tries = 0;
11639: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
11640:
11641: while (($gotlock ne 'ok') && $tries < 10) {
11642: $tries ++;
11643: sleep(0.1);
11644: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
11645: }
11646: if ($gotlock eq 'ok') {
11647: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
11648: my ($tmp)=keys(%curr_permissions);
11649: if ($tmp=~/^error:/) { undef(%curr_permissions); }
11650: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
11651: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
11652: if (ref($curr_controls) eq 'HASH') {
11653: foreach my $control_item (keys(%{$curr_controls})) {
11654: my ($itemnum) = ($control_item =~ /^([^:]+):/);
11655: if (defined($todelete{$itemnum})) {
11656: push(@deletions,$file_name."\0".$control_item);
11657: } else {
11658: if (defined($changed_items{$itemnum})) {
11659: $new_control{$changed_items{$itemnum}} = $now;
11660: push(@deletions,$file_name."\0".$control_item);
11661: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
11662: } else {
11663: $new_control{$control_item} = $$curr_controls{$control_item};
11664: }
11665: }
11666: }
11667: }
11668: }
11669: my ($group);
11670: if (&is_course($domain,$user)) {
11671: ($group,my $file) = split(/\//,$file_name,2);
11672: }
11673: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
11674: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
11675: $outcome = &put('file_permissions',\%new_values,$domain,$user);
11676: # remove lock
11677: my @del_lock = ($file_name."\0".'locked_access_records');
11678: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
11679: my $sqlresult =
11680: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
11681: $group);
11682: } else {
11683: $outcome = "error: could not obtain lockfile\n";
11684: }
11685: return ($outcome,$deloutcome,\%new_values,\%translation);
11686: }
11687:
11688: sub make_public_indefinitely {
11689: my (@requrl) = @_;
11690: return &automated_portfile_access('public',\@requrl);
11691: }
11692:
11693: sub automated_portfile_access {
11694: my ($accesstype,$addsref,$delsref,$info) = @_;
11695: unless (($accesstype eq 'public') || ($accesstype eq 'ip')) {
11696: return 'invalid';
11697: }
11698: my %urls;
11699: if (ref($addsref) eq 'ARRAY') {
11700: foreach my $requrl (@{$addsref}) {
11701: if (&is_portfolio_url($requrl)) {
11702: unless (exists($urls{$requrl})) {
11703: $urls{$requrl} = 'add';
11704: }
11705: }
11706: }
11707: }
11708: if (ref($delsref) eq 'ARRAY') {
11709: foreach my $requrl (@{$delsref}) {
11710: if (&is_portfolio_url($requrl)) {
11711: unless (exists($urls{$requrl})) {
11712: $urls{$requrl} = 'delete';
11713: }
11714: }
11715: }
11716: }
11717: unless (keys(%urls)) {
11718: return 'invalid';
11719: }
11720: my $ip;
11721: if ($accesstype eq 'ip') {
11722: if (ref($info) eq 'HASH') {
11723: if ($info->{'ip'} ne '') {
11724: $ip = $info->{'ip'};
11725: }
11726: }
11727: if ($ip eq '') {
11728: return 'invalid';
11729: }
11730: }
11731: my $errors;
11732: my $now = time;
11733: my %current_perms;
11734: foreach my $requrl (sort(keys(%urls))) {
11735: my $action;
11736: if ($urls{$requrl} eq 'add') {
11737: $action = 'activate';
11738: } else {
11739: $action = 'none';
11740: }
11741: my $aclnum = 0;
11742: my (undef,$udom,$unum,$file_name,$group) =
11743: &parse_portfolio_url($requrl);
11744: unless (exists($current_perms{$unum.':'.$udom})) {
11745: $current_perms{$unum.':'.$udom} = &get_portfile_permissions($udom,$unum);
11746: }
11747: my %access_controls = &get_access_controls($current_perms{$unum.':'.$udom},
11748: $group,$file_name);
11749: foreach my $key (keys(%{$access_controls{$file_name}})) {
11750: my ($num,$scope,$end,$start) =
11751: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
11752: if ($scope eq $accesstype) {
11753: if (($start <= $now) && ($end == 0)) {
11754: if ($accesstype eq 'ip') {
11755: if (ref($access_controls{$file_name}{$key}) eq 'HASH') {
11756: if (ref($access_controls{$file_name}{$key}{'ip'}) eq 'ARRAY') {
11757: if (grep(/^\Q$ip\E$/,@{$access_controls{$file_name}{$key}{'ip'}})) {
11758: if ($urls{$requrl} eq 'add') {
11759: $action = 'none';
11760: last;
11761: } else {
11762: $action = 'delete';
11763: $aclnum = $num;
11764: last;
11765: }
11766: }
11767: }
11768: }
11769: } elsif ($accesstype eq 'public') {
11770: if ($urls{$requrl} eq 'add') {
11771: $action = 'none';
11772: last;
11773: } else {
11774: $action = 'delete';
11775: $aclnum = $num;
11776: last;
11777: }
11778: }
11779: } elsif ($accesstype eq 'public') {
11780: $action = 'update';
11781: $aclnum = $num;
11782: last;
11783: }
11784: }
11785: }
11786: if ($action eq 'none') {
11787: next;
11788: } else {
11789: my %changes;
11790: my $newend = 0;
11791: my $newstart = $now;
11792: my $newkey = $aclnum.':'.$accesstype.'_'.$newend.'_'.$newstart;
11793: $changes{$action}{$newkey} = {
11794: type => $accesstype,
11795: time => {
11796: start => $newstart,
11797: end => $newend,
11798: },
11799: };
11800: if ($accesstype eq 'ip') {
11801: $changes{$action}{$newkey}{'ip'} = [$ip];
11802: }
11803: my ($outcome,$deloutcome,$new_values,$translation) =
11804: &modify_access_controls($file_name,\%changes,$udom,$unum);
11805: unless ($outcome eq 'ok') {
11806: $errors .= $outcome.' ';
11807: }
11808: }
11809: }
11810: if ($errors) {
11811: $errors =~ s/\s$//;
11812: return $errors;
11813: } else {
11814: return 'ok';
11815: }
11816: }
11817:
11818: #------------------------------------------------------Get Marked as Read Only
11819:
11820: sub get_marked_as_readonly {
11821: my ($domain,$user,$what,$group) = @_;
11822: my $current_permissions = &get_portfile_permissions($domain,$user);
11823: my @readonly_files;
11824: my $cmp1=$what;
11825: if (ref($what)) { $cmp1=join('',@{$what}) };
11826: while (my ($file_name,$value) = each(%{$current_permissions})) {
11827: if (defined($group)) {
11828: if ($file_name !~ m-^\Q$group\E/-) {
11829: next;
11830: }
11831: }
11832: if (ref($value) eq "ARRAY"){
11833: foreach my $stored_what (@{$value}) {
11834: my $cmp2=$stored_what;
11835: if (ref($stored_what) eq 'ARRAY') {
11836: $cmp2=join('',@{$stored_what});
11837: }
11838: if ($cmp1 eq $cmp2) {
11839: push(@readonly_files, $file_name);
11840: last;
11841: } elsif (!defined($what)) {
11842: push(@readonly_files, $file_name);
11843: last;
11844: }
11845: }
11846: }
11847: }
11848: return @readonly_files;
11849: }
11850: #-----------------------------------------------------------Get Marked as Read Only Hash
11851:
11852: sub get_marked_as_readonly_hash {
11853: my ($current_permissions,$group,$what) = @_;
11854: my %readonly_files;
11855: while (my ($file_name,$value) = each(%{$current_permissions})) {
11856: if (defined($group)) {
11857: if ($file_name !~ m-^\Q$group\E/-) {
11858: next;
11859: }
11860: }
11861: if (ref($value) eq "ARRAY"){
11862: foreach my $stored_what (@{$value}) {
11863: if (ref($stored_what) eq 'ARRAY') {
11864: foreach my $lock_descriptor(@{$stored_what}) {
11865: if ($lock_descriptor eq 'graded') {
11866: $readonly_files{$file_name} = 'graded';
11867: } elsif ($lock_descriptor eq 'handback') {
11868: $readonly_files{$file_name} = 'handback';
11869: } else {
11870: if (!exists($readonly_files{$file_name})) {
11871: $readonly_files{$file_name} = 'locked';
11872: }
11873: }
11874: }
11875: }
11876: }
11877: }
11878: }
11879: return %readonly_files;
11880: }
11881: # ------------------------------------------------------------ Unmark as Read Only
11882:
11883: sub unmark_as_readonly {
11884: # unmarks $file_name (if $file_name is defined), or all files locked by $what
11885: # for portfolio submissions, $what contains [$symb,$crsid]
11886: my ($domain,$user,$what,$file_name,$group) = @_;
11887: $file_name = &declutter_portfile($file_name);
11888: my $symb_crs = $what;
11889: if (ref($what)) { $symb_crs=join('',@$what); }
11890: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
11891: my ($tmp)=keys(%current_permissions);
11892: if ($tmp=~/^error:/) { undef(%current_permissions); }
11893: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
11894: foreach my $file (@readonly_files) {
11895: my $clean_file = &declutter_portfile($file);
11896: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
11897: my $current_locks = $current_permissions{$file};
11898: my @new_locks;
11899: my @del_keys;
11900: if (ref($current_locks) eq "ARRAY"){
11901: foreach my $locker (@{$current_locks}) {
11902: my $compare=$locker;
11903: if (ref($locker) eq 'ARRAY') {
11904: $compare=join('',@{$locker});
11905: if ($compare ne $symb_crs) {
11906: push(@new_locks, $locker);
11907: }
11908: }
11909: }
11910: if (scalar(@new_locks) > 0) {
11911: $current_permissions{$file} = \@new_locks;
11912: } else {
11913: push(@del_keys, $file);
11914: &del('file_permissions',\@del_keys, $domain, $user);
11915: delete($current_permissions{$file});
11916: }
11917: }
11918: }
11919: &put('file_permissions',\%current_permissions,$domain,$user);
11920: return;
11921: }
11922:
11923: # ------------------------------------------------------------ Directory lister
11924:
11925: sub dirlist {
11926: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
11927: $uri=~s/^\///;
11928: $uri=~s/\/$//;
11929: my ($udom, $uname);
11930: if ($getuserdir) {
11931: $udom = $userdomain;
11932: $uname = $username;
11933: } else {
11934: (undef,$udom,$uname)=split(/\//,$uri);
11935: if(defined($userdomain)) {
11936: $udom = $userdomain;
11937: }
11938: if(defined($username)) {
11939: $uname = $username;
11940: }
11941: }
11942: my ($dirRoot,$listing,@listing_results);
11943:
11944: $dirRoot = $perlvar{'lonDocRoot'};
11945: if (defined($getpropath)) {
11946: $dirRoot = &propath($udom,$uname);
11947: $dirRoot =~ s/\/$//;
11948: } elsif (defined($getuserdir)) {
11949: my $subdir=$uname.'__';
11950: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
11951: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
11952: ."/$udom/$subdir/$uname";
11953: } elsif (defined($alternateRoot)) {
11954: $dirRoot = $alternateRoot;
11955: }
11956:
11957: if($udom) {
11958: if($uname) {
11959: my $uhome = &homeserver($uname,$udom);
11960: if ($uhome eq 'no_host') {
11961: return ([],'no_host');
11962: }
11963: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
11964: .$getuserdir.':'.&escape($dirRoot)
11965: .':'.&escape($uname).':'.&escape($udom),$uhome);
11966: if ($listing eq 'unknown_cmd') {
11967: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
11968: } else {
11969: @listing_results = map { &unescape($_); } split(/:/,$listing);
11970: }
11971: if ($listing eq 'unknown_cmd') {
11972: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
11973: @listing_results = split(/:/,$listing);
11974: } else {
11975: @listing_results = map { &unescape($_); } split(/:/,$listing);
11976: }
11977: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
11978: ($listing eq 'rejected') || ($listing eq 'refused') ||
11979: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
11980: return ([],$listing);
11981: } else {
11982: return (\@listing_results);
11983: }
11984: } elsif(!$alternateRoot) {
11985: my (%allusers,%listerror);
11986: my %servers = &get_servers($udom,'library');
11987: foreach my $tryserver (keys(%servers)) {
11988: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
11989: &escape($udom),$tryserver);
11990: if ($listing eq 'unknown_cmd') {
11991: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
11992: $udom, $tryserver);
11993: } else {
11994: @listing_results = map { &unescape($_); } split(/:/,$listing);
11995: }
11996: if ($listing eq 'unknown_cmd') {
11997: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
11998: $udom, $tryserver);
11999: @listing_results = split(/:/,$listing);
12000: } else {
12001: @listing_results =
12002: map { &unescape($_); } split(/:/,$listing);
12003: }
12004: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
12005: ($listing eq 'rejected') || ($listing eq 'refused') ||
12006: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
12007: $listerror{$tryserver} = $listing;
12008: } else {
12009: foreach my $line (@listing_results) {
12010: my ($entry) = split(/&/,$line,2);
12011: $allusers{$entry} = 1;
12012: }
12013: }
12014: }
12015: my @alluserslist=();
12016: foreach my $user (sort(keys(%allusers))) {
12017: push(@alluserslist,$user.'&user');
12018: }
12019:
12020: if (!%listerror) {
12021: # no errors
12022: return (\@alluserslist);
12023: } elsif (scalar(keys(%servers)) == 1) {
12024: # one library server, one error
12025: my ($key) = keys(%listerror);
12026: return (\@alluserslist, $listerror{$key});
12027: } elsif ( grep { $_ eq 'con_lost' } values(%listerror) ) {
12028: # con_lost indicates that we might miss data from at least one
12029: # library server
12030: return (\@alluserslist, 'con_lost');
12031: } else {
12032: # multiple library servers and no con_lost -> data should be
12033: # complete.
12034: return (\@alluserslist);
12035: }
12036:
12037: } else {
12038: return ([],'missing username');
12039: }
12040: } elsif(!defined($getpropath)) {
12041: my $path = $perlvar{'lonDocRoot'}.'/res/';
12042: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
12043: return (\@all_domains);
12044: } else {
12045: return ([],'missing domain');
12046: }
12047: }
12048:
12049: # --------------------------------------------- GetFileTimestamp
12050: # This function utilizes dirlist and returns the date stamp for
12051: # when it was last modified. It will also return an error of -1
12052: # if an error occurs
12053:
12054: sub GetFileTimestamp {
12055: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
12056: $studentDomain = &LONCAPA::clean_domain($studentDomain);
12057: $studentName = &LONCAPA::clean_username($studentName);
12058: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
12059: undef,$getuserdir);
12060: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
12061: return -1;
12062: }
12063: if (ref($fileref) eq 'ARRAY') {
12064: my @stats = split('&',$fileref->[0]);
12065: # @stats contains first the filename, then the stat output
12066: return $stats[10]; # so this is 10 instead of 9.
12067: } else {
12068: return -1;
12069: }
12070: }
12071:
12072: sub stat_file {
12073: my ($uri) = @_;
12074: $uri = &clutter_with_no_wrapper($uri);
12075:
12076: my ($udom,$uname,$file);
12077: if ($uri =~ m-^/(uploaded|editupload)/-) {
12078: ($udom,$uname,$file) =
12079: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
12080: $file = 'userfiles/'.$file;
12081: }
12082: if ($uri =~ m-^/res/-) {
12083: ($udom,$uname) =
12084: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
12085: $file = $uri;
12086: }
12087:
12088: if (!$udom || !$uname || !$file) {
12089: # unable to handle the uri
12090: return ();
12091: }
12092: my $getpropath;
12093: if ($file =~ /^userfiles\//) {
12094: $getpropath = 1;
12095: }
12096: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
12097: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
12098: return ();
12099: } else {
12100: if (ref($listref) eq 'ARRAY') {
12101: my @stats = split('&',$listref->[0]);
12102: shift(@stats); #filename is first
12103: return @stats;
12104: }
12105: }
12106: return ();
12107: }
12108:
12109: # --------------------------------------------------------- recursedirs
12110: # Recursive function to traverse either a specific user's Authoring Space
12111: # or corresponding Published Resource Space, and populate the hash ref:
12112: # $dirhashref with URLs of all directories, and if $filehashref hash
12113: # ref arg is provided, the URLs of any files, excluding versioned, .meta,
12114: # or .rights files in resource space, and .meta, .save, .log, .bak and
12115: # .rights files in Authoring Space.
12116: #
12117: # Inputs:
12118: #
12119: # $is_home - true if current server is home server for user's space
12120: # $recurse - if true will also traverse subdirectories recursively
12121: # $include - reference to hash containing allowed file extensions. If provided,
12122: # files which do not have a matching extension will be ignored.
12123: # $exclude - reference to hash containing excluded file extensions. If provided,
12124: # files which have a matching extension will be ignored.
12125: # $nonemptydir - if true, will only populate $fileshashref hash entry for a particular
12126: # directory with first file found (with acceptable extension).
12127: # $addtopdir - if true, set $dirhashref->{'/'} = 1
12128: # $toppath - Top level directory (i.e., /res/$dom/$uname or /priv/$dom/$uname
12129: # $relpath - Current path (relative to top level).
12130: # $dirhashref - reference to hash to populate with URLs of directories (Required)
12131: # $filehashref - reference to hash to populate with URLs of files (Optional)
12132: #
12133: # Returns: nothing
12134: #
12135: # Side Effects: populates $dirhashref, and $filehashref (if provided).
12136: #
12137: # Currently used by interface/londocs.pm to create linked select boxes for
12138: # directory and filename to import a Course "Author" resource into a course, and
12139: # also to create linked select boxes for Authoring Space and Directory to choose
12140: # save location for creation of a new "standard" problem from the Course Editor.
12141: #
12142:
12143: sub recursedirs {
12144: my ($is_home,$recurse,$include,$exclude,$nonemptydir,$addtopdir,$toppath,$relpath,$dirhashref,$filehashref) = @_;
12145: return unless (ref($dirhashref) eq 'HASH');
12146: my $docroot = $perlvar{'lonDocRoot'};
12147: my $currpath = $docroot.$toppath;
12148: if ($relpath ne '') {
12149: $currpath .= "/$relpath";
12150: }
12151: my ($savefile,$checkinc,$checkexc);
12152: if (ref($filehashref)) {
12153: $savefile = 1;
12154: }
12155: if (ref($include) eq 'HASH') {
12156: $checkinc = 1;
12157: }
12158: if (ref($exclude) eq 'HASH') {
12159: $checkexc = 1;
12160: }
12161: if ($is_home) {
12162: if ((-e $currpath) && (opendir(my $dirh,$currpath))) {
12163: my $filecount = 0;
12164: foreach my $item (sort { lc($a) cmp lc($b) } grep(!/^\.+$/,readdir($dirh))) {
12165: next if ($item eq '');
12166: if (-d "$currpath/$item") {
12167: my $newpath;
12168: if ($relpath ne '') {
12169: $newpath = "$relpath/$item";
12170: } else {
12171: $newpath = $item;
12172: }
12173: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
12174: if ($recurse) {
12175: &recursedirs($is_home,$recurse,$include,$exclude,$nonemptydir,$addtopdir,$toppath,$newpath,$dirhashref,$filehashref);
12176: }
12177: } elsif (($savefile) || ($relpath eq '')) {
12178: next if ($nonemptydir && $filecount);
12179: if ($checkinc || $checkexc) {
12180: my ($extension) = ($item =~ /\.(\w+)$/);
12181: if ($checkinc) {
12182: next unless ($extension && $include->{$extension});
12183: }
12184: if ($checkexc) {
12185: next if ($extension && $exclude->{$extension});
12186: }
12187: }
12188: if (($relpath eq '') && (!exists($dirhashref->{'/'}))) {
12189: $dirhashref->{'/'} = 1;
12190: }
12191: if ($savefile) {
12192: if ($relpath eq '') {
12193: $filehashref->{'/'}{$item} = 1;
12194: } else {
12195: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
12196: }
12197: }
12198: $filecount ++;
12199: }
12200: }
12201: closedir($dirh);
12202: }
12203: } else {
12204: my ($dirlistref,$listerror) =
12205: &dirlist($toppath.$relpath);
12206: my @dir_lines;
12207: my $dirptr=16384;
12208: if (ref($dirlistref) eq 'ARRAY') {
12209: my $filecount = 0;
12210: foreach my $dir_line (sort
12211: {
12212: my ($afile)=split('&',$a,2);
12213: my ($bfile)=split('&',$b,2);
12214: return (lc($afile) cmp lc($bfile));
12215: } (@{$dirlistref})) {
12216: my ($item,$dom,undef,$testdir,undef,undef,undef,undef,$size,undef,$mtime,undef,undef,undef,$obs,undef) =
12217: split(/\&/,$dir_line,16);
12218: $item =~ s/\s+$//;
12219: next if (($item =~ /^\.\.?$/) || ($obs));
12220: if ($dirptr&$testdir) {
12221: my $newpath;
12222: if ($relpath) {
12223: $newpath = "$relpath/$item";
12224: } else {
12225: $newpath = $item;
12226: }
12227: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
12228: if ($recurse) {
12229: &recursedirs($is_home,$recurse,$include,$exclude,$nonemptydir,$addtopdir,$toppath,$newpath,$dirhashref,$filehashref);
12230: }
12231: } elsif (($savefile) || ($relpath eq '')) {
12232: next if ($nonemptydir && $filecount);
12233: if ($checkinc || $checkexc) {
12234: my $extension;
12235: if ($checkinc) {
12236: next unless ($extension && $include->{$extension});
12237: }
12238: if ($checkexc) {
12239: next if ($extension && $exclude->{$extension});
12240: }
12241: }
12242: if (($relpath eq '') && (!exists($dirhashref->{'/'}))) {
12243: $dirhashref->{'/'} = 1;
12244: }
12245: if ($savefile) {
12246: if ($relpath eq '') {
12247: $filehashref->{'/'}{$item} = 1;
12248: } else {
12249: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
12250: }
12251: }
12252: $filecount ++;
12253: }
12254: }
12255: }
12256: }
12257: if ($addtopdir) {
12258: if (($relpath eq '') && (!exists($dirhashref->{'/'}))) {
12259: $dirhashref->{'/'} = 1;
12260: }
12261: }
12262: return;
12263: }
12264:
12265: sub priv_exclude {
12266: return {
12267: meta => 1,
12268: save => 1,
12269: log => 1,
12270: bak => 1,
12271: rights => 1,
12272: DS_Store => 1,
12273: };
12274: }
12275:
12276: # -------------------------------------------------------- Value of a Condition
12277:
12278: # gets the value of a specific preevaluated condition
12279: # stored in the string $env{user.state.<cid>}
12280: # or looks up a condition reference in the bighash and if if hasn't
12281: # already been evaluated recurses into docondval to get the value of
12282: # the condition, then memoizing it to
12283: # $env{user.state.<cid>.<condition>}
12284: sub directcondval {
12285: my $number=shift;
12286: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
12287: &Apache::lonuserstate::evalstate();
12288: }
12289: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
12290: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
12291: } elsif ($number =~ /^_/) {
12292: my $sub_condition;
12293: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12294: &GDBM_READER(),0640)) {
12295: $sub_condition=$bighash{'conditions'.$number};
12296: untie(%bighash);
12297: }
12298: my $value = &docondval($sub_condition);
12299: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
12300: return $value;
12301: }
12302: if ($env{'user.state.'.$env{'request.course.id'}}) {
12303: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
12304: } else {
12305: return 2;
12306: }
12307: }
12308:
12309: # get the collection of conditions for this resource
12310: sub condval {
12311: my $condidx=shift;
12312: my $allpathcond='';
12313: foreach my $cond (split(/\|/,$condidx)) {
12314: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
12315: $allpathcond.=
12316: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
12317: }
12318: }
12319: $allpathcond=~s/\|$//;
12320: return &docondval($allpathcond);
12321: }
12322:
12323: #evaluates an expression of conditions
12324: sub docondval {
12325: my ($allpathcond) = @_;
12326: my $result=0;
12327: if ($env{'request.course.id'}
12328: && defined($allpathcond)) {
12329: my $operand='|';
12330: my @stack;
12331: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
12332: if ($chunk eq '(') {
12333: push @stack,($operand,$result);
12334: } elsif ($chunk eq ')') {
12335: my $before=pop @stack;
12336: if (pop @stack eq '&') {
12337: $result=$result>$before?$before:$result;
12338: } else {
12339: $result=$result>$before?$result:$before;
12340: }
12341: } elsif (($chunk eq '&') || ($chunk eq '|')) {
12342: $operand=$chunk;
12343: } else {
12344: my $new=directcondval($chunk);
12345: if ($operand eq '&') {
12346: $result=$result>$new?$new:$result;
12347: } else {
12348: $result=$result>$new?$result:$new;
12349: }
12350: }
12351: }
12352: }
12353: return $result;
12354: }
12355:
12356: # ---------------------------------------------------- Devalidate courseresdata
12357:
12358: sub devalidatecourseresdata {
12359: my ($coursenum,$coursedomain)=@_;
12360: my $hashid=$coursenum.':'.$coursedomain;
12361: &devalidate_cache_new('courseres',$hashid);
12362: }
12363:
12364:
12365: # --------------------------------------------------- Course Resourcedata Query
12366: #
12367: # Parameters:
12368: # $coursenum - Number of the course.
12369: # $coursedomain - Domain at which the course was created.
12370: # Returns:
12371: # A hash of the course parameters along (I think) with timestamps
12372: # and version info.
12373:
12374: sub get_courseresdata {
12375: my ($coursenum,$coursedomain)=@_;
12376: my $coursehom=&homeserver($coursenum,$coursedomain);
12377: my $hashid=$coursenum.':'.$coursedomain;
12378: my ($result,$cached)=&is_cached_new('courseres',$hashid);
12379: my %dumpreply;
12380: unless (defined($cached)) {
12381: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
12382: $result=\%dumpreply;
12383: my ($tmp) = keys(%dumpreply);
12384: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
12385: &do_cache_new('courseres',$hashid,$result,600);
12386: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
12387: return $tmp;
12388: } elsif ($tmp =~ /^(error)/) {
12389: $result=undef;
12390: &do_cache_new('courseres',$hashid,$result,600);
12391: }
12392: }
12393: return $result;
12394: }
12395:
12396: sub devalidateuserresdata {
12397: my ($uname,$udom)=@_;
12398: my $hashid="$udom:$uname";
12399: &devalidate_cache_new('userres',$hashid);
12400: }
12401:
12402: sub get_userresdata {
12403: my ($uname,$udom)=@_;
12404: #most student don\'t have any data set, check if there is some data
12405: if (&EXT_cache_status($udom,$uname)) { return undef; }
12406:
12407: my $hashid="$udom:$uname";
12408: my ($result,$cached)=&is_cached_new('userres',$hashid);
12409: if (!defined($cached)) {
12410: my %resourcedata=&dump('resourcedata',$udom,$uname);
12411: $result=\%resourcedata;
12412: &do_cache_new('userres',$hashid,$result,600);
12413: }
12414: my ($tmp)=keys(%$result);
12415: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
12416: return $result;
12417: }
12418: #error 2 occurs when the .db doesn't exist
12419: if ($tmp!~/error: 2 /) {
12420: if ((!defined($cached)) || ($tmp ne 'con_lost')) {
12421: &logthis("<font color=\"blue\">WARNING:".
12422: " Trying to get resource data for ".
12423: $uname." at ".$udom.": ".
12424: $tmp."</font>");
12425: }
12426: } elsif ($tmp=~/error: 2 /) {
12427: #&EXT_cache_set($udom,$uname);
12428: &do_cache_new('userres',$hashid,undef,600);
12429: undef($tmp); # not really an error so don't send it back
12430: }
12431: return $tmp;
12432: }
12433: #----------------------------------------------- resdata - return resource data
12434: # Purpose:
12435: # Return resource data for either users or for a course.
12436: # Parameters:
12437: # $name - Course/user name.
12438: # $domain - Name of the domain the user/course is registered on.
12439: # $type - Type of thing $name is (must be 'course' or 'user')
12440: # $mapp - decluttered URL of enclosing map
12441: # $recursed - Ref to scalar -- set to 1, if nested maps have been recursed.
12442: # $recurseup - Ref to array of map URLs, starting with map containing
12443: # $mapp up through hierarchy of nested maps to top level map.
12444: # $courseid - CourseID (first part of param identifier).
12445: # $modifier - Middle part of param identifier.
12446: # $what - Last part of param identifier.
12447: # @which - Array of names of resources desired.
12448: # Returns:
12449: # The value of the first reasource in @which that is found in the
12450: # resource hash.
12451: # Exceptional Conditions:
12452: # If the $type passed in is not valid (not the string 'course' or
12453: # 'user', an undefined reference is returned.
12454: # If none of the resources are found, an undef is returned
12455: sub resdata {
12456: my ($name,$domain,$type,$mapp,$recursed,$recurseup,$courseid,
12457: $modifier,$what,@which)=@_;
12458: my $result;
12459: if ($type eq 'course') {
12460: $result=&get_courseresdata($name,$domain);
12461: } elsif ($type eq 'user') {
12462: $result=&get_userresdata($name,$domain);
12463: }
12464: if (!ref($result)) { return $result; }
12465: foreach my $item (@which) {
12466: if ($item->[1] eq 'course') {
12467: if ((ref($recurseup) eq 'ARRAY') && (ref($recursed) eq 'SCALAR')) {
12468: unless ($$recursed) {
12469: @{$recurseup} = &get_map_hierarchy($mapp,$courseid);
12470: $$recursed = 1;
12471: }
12472: foreach my $item (@${recurseup}) {
12473: my $norecursechk=$courseid.$modifier.$item.'___(all).'.$what;
12474: last if (defined($result->{$norecursechk}));
12475: my $recursechk=$courseid.$modifier.$item.'___(rec).'.$what;
12476: if (defined($result->{$recursechk})) { return [$result->{$recursechk},'map']; }
12477: }
12478: }
12479: }
12480: if (defined($result->{$item->[0]})) {
12481: return [$result->{$item->[0]},$item->[1]];
12482: }
12483: }
12484: return undef;
12485: }
12486:
12487: sub get_domain_lti {
12488: my ($cdom,$context) = @_;
12489: my ($name,$cachename,%lti);
12490: if ($context eq 'consumer') {
12491: $name = 'ltitools';
12492: } elsif ($context eq 'provider') {
12493: $name = 'lti';
12494: } elsif ($context eq 'linkprot') {
12495: $name = 'ltisec';
12496: } else {
12497: return %lti;
12498: }
12499:
12500: if ($context eq 'linkprot') {
12501: $cachename = $context;
12502: } else {
12503: $cachename = $name;
12504: }
12505:
12506: my ($result,$cached)=&is_cached_new($cachename,$cdom);
12507: if (defined($cached)) {
12508: if (ref($result) eq 'HASH') {
12509: %lti = %{$result};
12510: }
12511: } else {
12512: my %domconfig = &get_dom('configuration',[$name],$cdom);
12513: if (ref($domconfig{$name}) eq 'HASH') {
12514: if ($context eq 'linkprot') {
12515: if (ref($domconfig{$name}{'linkprot'}) eq 'HASH') {
12516: %lti = %{$domconfig{$name}{'linkprot'}};
12517: }
12518: } else {
12519: %lti = %{$domconfig{$name}};
12520: }
12521: if (($context eq 'consumer') && (keys(%lti))) {
12522: my %encdomconfig = &get_dom('encconfig',[$name],$cdom,undef,1);
12523: if (ref($encdomconfig{$name}) eq 'HASH') {
12524: foreach my $id (keys(%lti)) {
12525: if (ref($encdomconfig{$name}{$id}) eq 'HASH') {
12526: foreach my $item ('key','secret') {
12527: $lti{$id}{$item} = $encdomconfig{$name}{$id}{$item};
12528: }
12529: }
12530: }
12531: }
12532: }
12533: }
12534: my $cachetime = 24*60*60;
12535: &do_cache_new($cachename,$cdom,\%lti,$cachetime);
12536: }
12537: return %lti;
12538: }
12539:
12540: sub get_course_lti {
12541: my ($cnum,$cdom) = @_;
12542: my $hashid=$cdom.'_'.$cnum;
12543: my %courselti;
12544: my ($result,$cached)=&is_cached_new('courselti',$hashid);
12545: if (defined($cached)) {
12546: if (ref($result) eq 'HASH') {
12547: %courselti = %{$result};
12548: }
12549: } else {
12550: %courselti = &dump('lti',$cdom,$cnum,undef,undef,undef,1);
12551: my $cachetime = 24*60*60;
12552: &do_cache_new('courselti',$hashid,\%courselti,$cachetime);
12553: }
12554: return %courselti;
12555: }
12556:
12557: sub courselti_itemid {
12558: my ($cnum,$cdom,$url,$method,$params,$context) = @_;
12559: my ($chome,$itemid);
12560: $chome = &homeserver($cnum,$cdom);
12561: return if ($chome eq 'no_host');
12562: if (ref($params) eq 'HASH') {
12563: my $rep;
12564: if (grep { $_ eq $chome } current_machine_ids()) {
12565: $rep = LONCAPA::Lond::crslti_itemid($cdom,$cnum,$url,$method,$params,$perlvar{'lonVersion'});
12566: } else {
12567: my $escurl = &escape($url);
12568: my $escmethod = &escape($method);
12569: my $items = &freeze_escape($params);
12570: $rep = &reply("encrypt:lti:$cdom:$cnum:$context:$escurl:$escmethod:$items",$chome);
12571: }
12572: unless (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
12573: ($rep eq 'unknown_cmd')) {
12574: $itemid = $rep;
12575: }
12576: }
12577: return $itemid;
12578: }
12579:
12580: sub domainlti_itemid {
12581: my ($cdom,$url,$method,$params,$context) = @_;
12582: my ($primary_id,$itemid);
12583: $primary_id = &domain($cdom,'primary');
12584: return if ($primary_id eq '');
12585: if (ref($params) eq 'HASH') {
12586: my $rep;
12587: if (grep { $_ eq $primary_id } current_machine_ids()) {
12588: $rep = LONCAPA::Lond::domlti_itemid($cdom,$context,$url,$method,$params,$perlvar{'lonVersion'});
12589: } else {
12590: my $cnum = '';
12591: my $escurl = &escape($url);
12592: my $escmethod = &escape($method);
12593: my $items = &freeze_escape($params);
12594: $rep = &reply("encrypt:lti:$cdom:$cnum:$context:$escurl:$escmethod:$items",$primary_id);
12595: }
12596: unless (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
12597: ($rep eq 'unknown_cmd')) {
12598: $itemid = $rep;
12599: }
12600: }
12601: return $itemid;
12602: }
12603:
12604: sub count_supptools {
12605: my ($cnum,$cdom,$ignorecache,$reload)=@_;
12606: my $hashid=$cnum.':'.$cdom;
12607: my ($numexttools,$cached);
12608: unless ($ignorecache) {
12609: ($numexttools,$cached) = &is_cached_new('supptools',$hashid);
12610: }
12611: unless (defined($cached)) {
12612: my $chome=&homeserver($cnum,$cdom);
12613: $numexttools = 0;
12614: unless ($chome eq 'no_host') {
12615: my ($supplemental) = &Apache::loncommon::get_supplemental($cnum,$cdom,$reload);
12616: if (ref($supplemental) eq 'HASH') {
12617: if ((ref($supplemental->{'ids'}) eq 'HASH') && (ref($supplemental->{'hidden'}) eq 'HASH')) {
12618: foreach my $key (keys(%{$supplemental->{'ids'}})) {
12619: if ($key =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}) {
12620: $numexttools ++;
12621: }
12622: }
12623: }
12624: }
12625: }
12626: &do_cache_new('supptools',$hashid,$numexttools,600);
12627: }
12628: return $numexttools;
12629: }
12630:
12631: sub has_unhidden_suppfiles {
12632: my ($cnum,$cdom,$ignorecache,$possdel)=@_;
12633: my $hashid=$cnum.':'.$cdom;
12634: my ($showsupp,$cached);
12635: unless ($ignorecache) {
12636: ($showsupp,$cached) = &is_cached_new('showsupp',$hashid);
12637: }
12638: unless (defined($cached)) {
12639: my $chome=&homeserver($cnum,$cdom);
12640: unless ($chome eq 'no_host') {
12641: my ($supplemental) = &Apache::loncommon::get_supplemental($cnum,$cdom,$ignorecache,$possdel);
12642: if (ref($supplemental) eq 'HASH') {
12643: if ((ref($supplemental->{'ids'}) eq 'HASH') && (ref($supplemental->{'hidden'}) eq 'HASH')) {
12644: foreach my $key (keys(%{$supplemental->{'ids'}})) {
12645: next if ($key =~ /\.sequence$/);
12646: if (ref($supplemental->{'ids'}->{$key}) eq 'ARRAY') {
12647: foreach my $id (@{$supplemental->{'ids'}->{$key}}) {
12648: unless ($supplemental->{'hidden'}->{$id}) {
12649: $showsupp = 1;
12650: last;
12651: }
12652: }
12653: }
12654: last if ($showsupp);
12655: }
12656: }
12657: }
12658: }
12659: &do_cache_new('showsupp',$hashid,$showsupp,600);
12660: }
12661: return $showsupp;
12662: }
12663:
12664: #
12665: # EXT resource caching routines
12666: #
12667:
12668: {
12669: # Cache (5 seconds) of map hierarchy for speedup of navmaps display
12670: #
12671: # The course for which we cache
12672: my $cachedmapkey='';
12673: # The cached recursive maps for this course
12674: my %cachedmaps=();
12675: # When this was last done
12676: my $cachedmaptime='';
12677:
12678: sub clear_EXT_cache_status {
12679: &delenv('cache.EXT.');
12680: }
12681:
12682: sub EXT_cache_status {
12683: my ($target_domain,$target_user) = @_;
12684: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
12685: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
12686: # We know already the user has no data
12687: return 1;
12688: } else {
12689: return 0;
12690: }
12691: }
12692:
12693: sub EXT_cache_set {
12694: my ($target_domain,$target_user) = @_;
12695: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
12696: #&appenv({$cachename => time});
12697: }
12698:
12699: # --------------------------------------------------------- Value of a Variable
12700: sub EXT {
12701:
12702: my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid,$recurseupref)=@_;
12703: unless ($varname) { return ''; }
12704: #get real user name/domain, courseid and symb
12705: my $courseid;
12706: my $publicuser;
12707: if ($symbparm) {
12708: $symbparm=&get_symb_from_alias($symbparm);
12709: }
12710: if (!($uname && $udom)) {
12711: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
12712: if (!$symbparm) { $symbparm=$cursymb; }
12713: } else {
12714: $courseid=$env{'request.course.id'};
12715: }
12716: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
12717: my $rest;
12718: if (defined($therest[0])) {
12719: $rest=join('.',@therest);
12720: } else {
12721: $rest='';
12722: }
12723:
12724: my $qualifierrest=$qualifier;
12725: if ($rest) { $qualifierrest.='.'.$rest; }
12726: my $spacequalifierrest=$space;
12727: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
12728: if ($realm eq 'user') {
12729: # --------------------------------------------------------------- user.resource
12730: if ($space eq 'resource') {
12731: if ( (defined($Apache::lonhomework::parsing_a_problem)
12732: || defined($Apache::lonhomework::parsing_a_task))
12733: &&
12734: ($symbparm eq &symbread()) ) {
12735: # if we are in the middle of processing the resource the
12736: # get the value we are planning on committing
12737: if (defined($Apache::lonhomework::results{$qualifierrest})) {
12738: return $Apache::lonhomework::results{$qualifierrest};
12739: } else {
12740: return $Apache::lonhomework::history{$qualifierrest};
12741: }
12742: } else {
12743: my %restored;
12744: if ($publicuser || $env{'request.state'} eq 'construct') {
12745: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
12746: } else {
12747: %restored=&restore($symbparm,$courseid,$udom,$uname);
12748: }
12749: return $restored{$qualifierrest};
12750: }
12751: # ----------------------------------------------------------------- user.access
12752: } elsif ($space eq 'access') {
12753: # FIXME - not supporting calls for a specific user
12754: return &allowed($qualifier,$rest);
12755: # ------------------------------------------ user.preferences, user.environment
12756: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
12757: if (($uname eq $env{'user.name'}) &&
12758: ($udom eq $env{'user.domain'})) {
12759: return $env{join('.',('environment',$qualifierrest))};
12760: } else {
12761: my %returnhash;
12762: if (!$publicuser) {
12763: %returnhash=&userenvironment($udom,$uname,
12764: $qualifierrest);
12765: }
12766: return $returnhash{$qualifierrest};
12767: }
12768: # ----------------------------------------------------------------- user.course
12769: } elsif ($space eq 'course') {
12770: # FIXME - not supporting calls for a specific user
12771: return $env{join('.',('request.course',$qualifier))};
12772: # ------------------------------------------------------------------- user.role
12773: } elsif ($space eq 'role') {
12774: # FIXME - not supporting calls for a specific user
12775: my ($role,$where)=split(/\./,$env{'request.role'});
12776: if ($qualifier eq 'value') {
12777: return $role;
12778: } elsif ($qualifier eq 'extent') {
12779: return $where;
12780: }
12781: # ----------------------------------------------------------------- user.domain
12782: } elsif ($space eq 'domain') {
12783: return $udom;
12784: # ------------------------------------------------------------------- user.name
12785: } elsif ($space eq 'name') {
12786: return $uname;
12787: # ---------------------------------------------------- Any other user namespace
12788: } else {
12789: my %reply;
12790: if (!$publicuser) {
12791: %reply=&get($space,[$qualifierrest],$udom,$uname);
12792: }
12793: return $reply{$qualifierrest};
12794: }
12795: } elsif ($realm eq 'query') {
12796: # ---------------------------------------------- pull stuff out of query string
12797: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
12798: [$spacequalifierrest]);
12799: return $env{'form.'.$spacequalifierrest};
12800: } elsif ($realm eq 'request') {
12801: # ------------------------------------------------------------- request.browser
12802: if ($space eq 'browser') {
12803: return $env{'browser.'.$qualifier};
12804: # ------------------------------------------------------------ request.filename
12805: } else {
12806: return $env{'request.'.$spacequalifierrest};
12807: }
12808: } elsif ($realm eq 'course') {
12809: # ---------------------------------------------------------- course.description
12810: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
12811: } elsif ($realm eq 'resource') {
12812:
12813: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
12814: if (!$symbparm) { $symbparm=&symbread(); }
12815: }
12816:
12817: if ($qualifier eq '') {
12818: if ($space eq 'title') {
12819: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
12820: return &gettitle($symbparm);
12821: }
12822:
12823: if ($space eq 'map') {
12824: my ($map) = &decode_symb($symbparm);
12825: return &symbread($map);
12826: }
12827: if ($space eq 'maptitle') {
12828: my ($map) = &decode_symb($symbparm);
12829: return &gettitle($map);
12830: }
12831: if ($space eq 'filename') {
12832: if ($symbparm) {
12833: return &clutter((&decode_symb($symbparm))[2]);
12834: }
12835: return &hreflocation('',$env{'request.filename'});
12836: }
12837:
12838: if ((defined($courseid)) && ($courseid eq $env{'request.course.id'}) && $symbparm) {
12839: if ($space eq 'visibleparts') {
12840: my $navmap = Apache::lonnavmaps::navmap->new();
12841: my $item;
12842: if (ref($navmap)) {
12843: my $res = $navmap->getBySymb($symbparm);
12844: my $parts = $res->parts();
12845: if (ref($parts) eq 'ARRAY') {
12846: $item = join(',',@{$parts});
12847: }
12848: undef($navmap);
12849: }
12850: return $item;
12851: }
12852: }
12853: }
12854:
12855: my ($section, $group, @groups, @recurseup, $recursed);
12856: if (ref($recurseupref) eq 'ARRAY') {
12857: @recurseup = @{$recurseupref};
12858: $recursed = 1;
12859: }
12860: my ($courselevelm,$courseleveli,$courselevel,$mapp);
12861: if (($courseid eq '') && ($cid)) {
12862: $courseid = $cid;
12863: }
12864: if (($symbparm && $courseid) &&
12865: (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid))) {
12866:
12867: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
12868:
12869: # ----------------------------------------------------- Cascading lookup scheme
12870: my $symbp=$symbparm;
12871: $mapp=&deversion((&decode_symb($symbp))[0]);
12872: my $symbparm=$symbp.'.'.$spacequalifierrest;
12873: my $recurseparm=$mapp.'___(rec).'.$spacequalifierrest;
12874: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
12875: if (($env{'user.name'} eq $uname) &&
12876: ($env{'user.domain'} eq $udom)) {
12877: $section=$env{'request.course.sec'};
12878: @groups = split(/:/,$env{'request.course.groups'});
12879: @groups=&sort_course_groups($courseid,@groups);
12880: } else {
12881: if (! defined($usection)) {
12882: $section=&getsection($udom,$uname,$courseid);
12883: } else {
12884: $section = $usection;
12885: }
12886: @groups = &get_users_groups($udom,$uname,$courseid);
12887: }
12888:
12889: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
12890: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
12891: my $secleveli=$courseid.'.['.$section.'].'.$recurseparm;
12892: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
12893:
12894: $courselevel=$courseid.'.'.$spacequalifierrest;
12895: my $courselevelr=$courseid.'.'.$symbparm;
12896: $courseleveli=$courseid.'.'.$recurseparm;
12897: $courselevelm=$courseid.'.'.$mapparm;
12898:
12899: # ----------------------------------------------------------- first, check user
12900:
12901: my $userreply=&resdata($uname,$udom,'user',$mapp,\$recursed,
12902: \@recurseup,$courseid,'.',$spacequalifierrest,
12903: ([$courselevelr,'resource'],
12904: [$courselevelm,'map' ],
12905: [$courseleveli,'map' ],
12906: [$courselevel, 'course' ]));
12907: if (defined($userreply)) { return &get_reply($userreply); }
12908:
12909: # ------------------------------------------------ second, check some of course
12910: my $coursereply;
12911: if (@groups > 0) {
12912: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
12913: $recurseparm,$mapparm,$spacequalifierrest,
12914: $mapp,\$recursed,\@recurseup);
12915: if (defined($coursereply)) { return &get_reply($coursereply); }
12916: }
12917:
12918: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
12919: $env{'course.'.$courseid.'.domain'},
12920: 'course',$mapp,\$recursed,\@recurseup,
12921: $courseid,'.['.$section.'].',$spacequalifierrest,
12922: ([$seclevelr, 'resource'],
12923: [$seclevelm, 'map' ],
12924: [$secleveli, 'map' ],
12925: [$seclevel, 'course' ],
12926: [$courselevelr,'resource']));
12927: if (defined($coursereply)) { return &get_reply($coursereply); }
12928:
12929: # ------------------------------------------------------ third, check map parms
12930: my %parmhash=();
12931: my $thisparm='';
12932: if (tie(%parmhash,'GDBM_File',
12933: $env{'request.course.fn'}.'_parms.db',
12934: &GDBM_READER(),0640)) {
12935: $thisparm=$parmhash{$symbparm};
12936: untie(%parmhash);
12937: }
12938: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
12939: }
12940: # ------------------------------------------ fourth, look in resource metadata
12941:
12942: my $what = $spacequalifierrest;
12943: $what=~s/\./\_/;
12944: my $filename;
12945: if (!$symbparm) { $symbparm=&symbread(); }
12946: if ($symbparm) {
12947: $filename=(&decode_symb($symbparm))[2];
12948: } else {
12949: $filename=$env{'request.filename'};
12950: }
12951: my $toolsymb;
12952: if (($filename =~ /ext\.tool$/) && ($what ne '0_gradable')) {
12953: $toolsymb = $symbparm;
12954: }
12955: my $metadata=&metadata($filename,$what,$toolsymb);
12956: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
12957: $metadata=&metadata($filename,'parameter_'.$what,$toolsymb);
12958: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
12959:
12960: # ----------------------------------------------- fifth, look in rest of course
12961: if ($symbparm && defined($courseid) &&
12962: $courseid eq $env{'request.course.id'}) {
12963: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
12964: $env{'course.'.$courseid.'.domain'},
12965: 'course',$mapp,\$recursed,\@recurseup,
12966: $courseid,'.',$spacequalifierrest,
12967: ([$courselevelm,'map' ],
12968: [$courseleveli,'map' ],
12969: [$courselevel, 'course']));
12970: if (defined($coursereply)) { return &get_reply($coursereply); }
12971: }
12972: # ------------------------------------------------------------------ Cascade up
12973: unless ($space eq '0') {
12974: my @parts=split(/_/,$space);
12975: my $id=pop(@parts);
12976: my $part=join('_',@parts);
12977: if ($part eq '') { $part='0'; }
12978: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
12979: $symbparm,$udom,$uname,$section,1);
12980: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
12981: }
12982: if ($recurse) { return undef; }
12983: my $pack_def=&packages_tab_default($filename,$varname,$toolsymb);
12984: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
12985: # ---------------------------------------------------- Any other user namespace
12986: } elsif ($realm eq 'environment') {
12987: # ----------------------------------------------------------------- environment
12988: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
12989: return $env{'environment.'.$spacequalifierrest};
12990: } else {
12991: if ($uname eq 'anonymous' && $udom eq '') {
12992: return '';
12993: }
12994: my %returnhash=&userenvironment($udom,$uname,
12995: $spacequalifierrest);
12996: return $returnhash{$spacequalifierrest};
12997: }
12998: } elsif ($realm eq 'system') {
12999: # ----------------------------------------------------------------- system.time
13000: if ($space eq 'time') {
13001: return time;
13002: }
13003: } elsif ($realm eq 'server') {
13004: # ----------------------------------------------------------------- system.time
13005: if ($space eq 'name') {
13006: return $ENV{'SERVER_NAME'};
13007: }
13008: } elsif ($realm eq 'client') {
13009: if ($space eq 'remote_addr') {
13010: return &get_requestor_ip();
13011: }
13012: }
13013: return '';
13014: }
13015:
13016: sub get_reply {
13017: my ($reply_value) = @_;
13018: if (ref($reply_value) eq 'ARRAY') {
13019: if (wantarray) {
13020: return @$reply_value;
13021: }
13022: return $reply_value->[0];
13023: } else {
13024: return $reply_value;
13025: }
13026: }
13027:
13028: sub check_group_parms {
13029: my ($courseid,$groups,$symbparm,$recurseparm,$mapparm,$what,$mapp,
13030: $recursed,$recurseupref) = @_;
13031: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$recurseparm,'map'],
13032: [$what,'course']);
13033: my $coursereply;
13034: foreach my $group (@{$groups}) {
13035: my @groupitems = ();
13036: foreach my $level (@levels) {
13037: my $item = $courseid.'.['.$group.'].'.$level->[0];
13038: push(@groupitems,[$item,$level->[1]]);
13039: }
13040: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
13041: $env{'course.'.$courseid.'.domain'},
13042: 'course',$mapp,$recursed,$recurseupref,
13043: $courseid,'.['.$group.'].',$what,
13044: @groupitems);
13045: last if (defined($coursereply));
13046: }
13047: return $coursereply;
13048: }
13049:
13050: sub get_map_hierarchy {
13051: my ($mapname,$courseid) = @_;
13052: my @recurseup = ();
13053: if ($mapname) {
13054: if (($cachedmapkey eq $courseid) &&
13055: (abs($cachedmaptime-time)<5)) {
13056: if (ref($cachedmaps{$mapname}) eq 'ARRAY') {
13057: return @{$cachedmaps{$mapname}};
13058: }
13059: }
13060: my $navmap = Apache::lonnavmaps::navmap->new();
13061: if (ref($navmap)) {
13062: @recurseup = $navmap->recurseup_maps($mapname);
13063: undef($navmap);
13064: $cachedmaps{$mapname} = \@recurseup;
13065: $cachedmaptime=time;
13066: $cachedmapkey=$courseid;
13067: }
13068: }
13069: return @recurseup;
13070: }
13071:
13072: }
13073:
13074: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
13075: my ($courseid,@groups) = @_;
13076: @groups = sort(@groups);
13077: return @groups;
13078: }
13079:
13080: sub packages_tab_default {
13081: my ($uri,$varname,$toolsymb)=@_;
13082: my (undef,$part,$name)=split(/\./,$varname);
13083:
13084: my (@extension,@specifics,$do_default);
13085: foreach my $package (split(/,/,&metadata($uri,'packages',$toolsymb))) {
13086: my ($pack_type,$pack_part)=split(/_/,$package,2);
13087: if ($pack_type eq 'default') {
13088: $do_default=1;
13089: } elsif ($pack_type eq 'extension') {
13090: push(@extension,[$package,$pack_type,$pack_part]);
13091: } elsif ($pack_part eq $part || $pack_type eq 'part') {
13092: # only look at packages defaults for packages that this id is
13093: push(@specifics,[$package,$pack_type,$pack_part]);
13094: }
13095: }
13096: # first look for a package that matches the requested part id
13097: foreach my $package (@specifics) {
13098: my (undef,$pack_type,$pack_part)=@{$package};
13099: next if ($pack_part ne $part);
13100: if (defined($packagetab{"$pack_type&$name&default"})) {
13101: return $packagetab{"$pack_type&$name&default"};
13102: }
13103: }
13104: # look for any possible matching non extension_ package
13105: foreach my $package (@specifics) {
13106: my (undef,$pack_type,$pack_part)=@{$package};
13107: if (defined($packagetab{"$pack_type&$name&default"})) {
13108: return $packagetab{"$pack_type&$name&default"};
13109: }
13110: if ($pack_type eq 'part') { $pack_part='0'; }
13111: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
13112: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
13113: }
13114: }
13115: # look for any posible extension_ match
13116: foreach my $package (@extension) {
13117: my ($package,$pack_type)=@{$package};
13118: if (defined($packagetab{"$pack_type&$name&default"})) {
13119: return $packagetab{"$pack_type&$name&default"};
13120: }
13121: if (defined($packagetab{$package."&$name&default"})) {
13122: return $packagetab{$package."&$name&default"};
13123: }
13124: }
13125: # look for a global default setting
13126: if ($do_default && defined($packagetab{"default&$name&default"})) {
13127: return $packagetab{"default&$name&default"};
13128: }
13129: return undef;
13130: }
13131:
13132: sub add_prefix_and_part {
13133: my ($prefix,$part)=@_;
13134: my $keyroot;
13135: if (defined($prefix) && $prefix !~ /^__/) {
13136: # prefix that has a part already
13137: $keyroot=$prefix;
13138: } elsif (defined($prefix)) {
13139: # prefix that is missing a part
13140: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
13141: } else {
13142: # no prefix at all
13143: if (defined($part)) { $keyroot='_'.$part; }
13144: }
13145: return $keyroot;
13146: }
13147:
13148: # ---------------------------------------------------------------- Get metadata
13149:
13150: my %metaentry;
13151: my %importedpartids;
13152: my %importedrespids;
13153: sub metadata {
13154: my ($uri,$what,$toolsymb,$liburi,$prefix,$depthcount)=@_;
13155: $uri=&declutter($uri);
13156: # if it is a non metadata possible uri return quickly
13157: if (($uri eq '') ||
13158: (($uri =~ m|^/*adm/|) &&
13159: ($uri !~ m|^adm/includes|) && ($uri !~ m{/(smppg|bulletinboard|ext\.tool)$})) ||
13160: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
13161: return undef;
13162: }
13163: if (($uri =~ /^priv/ || $uri=~m{^home/httpd/html/priv})
13164: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
13165: return undef;
13166: }
13167: my $filename=$uri;
13168: $uri=~s/\.meta$//;
13169: #
13170: # Is the metadata already cached?
13171: # Look at timestamp of caching
13172: # Everything is cached by the main uri, libraries are never directly cached
13173: #
13174: if (!defined($liburi)) {
13175: my ($result,$cached)=&is_cached_new('meta',$uri);
13176: if (defined($cached)) { return $result->{':'.$what}; }
13177: }
13178:
13179: #
13180: # If the uri is for an external tool the file from
13181: # which metadata should be retrieved depends on whether
13182: # the tool had been configured to be gradable (set in the Course
13183: # Editor or Resource Editor).
13184: #
13185: # If a valid symb has been included as the third arg in the call
13186: # to &metadata() that can be used to retrieve the value of
13187: # parameter_0_gradable set for the resource, and included in the
13188: # uploaded map containing the tool. The value is retrieved via
13189: # &EXT(), if a valid symb is available. Otherwise the value of
13190: # gradable in the exttool_$marker.db file for the tool instance
13191: # is retrieved via &get().
13192: #
13193: # When lonuserstate::traceroute() calls lonnet::EXT() for
13194: # hiddenresource and encrypturl (during course initialization)
13195: # the map-level parameter for resource.0.gradable included in the
13196: # uploaded map containing the tool will not yet have been stored
13197: # in the user_course_parms.db file for the user's session, so in
13198: # this case fall back to retrieving gradable status from the
13199: # exttool_$marker.db file.
13200: #
13201: # In order to avoid an infinite loop, &metadata() will return
13202: # before a call to &EXT(), if the uri is for an external tool
13203: # and the $what for which metadata is being requested is
13204: # parameter_0_gradable or 0_gradable.
13205: #
13206:
13207: if ($uri =~ /ext\.tool$/) {
13208: if (($what eq 'parameter_0_gradable') || ($what eq '0_gradable')) {
13209: return;
13210: } else {
13211: my ($checked,$use_passback);
13212: if ($toolsymb ne '') {
13213: (undef,undef,my $tooluri) = &decode_symb($toolsymb);
13214: if (($tooluri eq $uri) && (&EXT('resource.0.gradable',$toolsymb))) {
13215: $checked = 1;
13216: if (&EXT('resource.0.gradable',$toolsymb) =~ /^yes$/i) {
13217: $use_passback = 1;
13218: }
13219: }
13220: }
13221: unless ($checked) {
13222: my ($ignore,$cdom,$cnum,$marker) = split(m{/},$uri);
13223: $marker=~s/\D//g;
13224: if ($marker) {
13225: my %toolsettings=&get('exttool_'.$marker,['gradable'],$cdom,$cnum);
13226: $use_passback = $toolsettings{'gradable'};
13227: }
13228: }
13229: if ($use_passback) {
13230: $filename = '/home/httpd/html/res/lib/templates/LTIpassback.tool';
13231: } else {
13232: $filename = '/home/httpd/html/res/lib/templates/LTIstandard.tool';
13233: }
13234: }
13235: }
13236:
13237: {
13238: # Imported parts would go here
13239: my @origfiletagids=();
13240: my $importedparts=0;
13241:
13242: # Imported responseids would go here
13243: my $importedresponses=0;
13244: #
13245: # Is this a recursive call for a library?
13246: #
13247: # if (! exists($metacache{$uri})) {
13248: # $metacache{$uri}={};
13249: # }
13250: my $cachetime = 60*60;
13251: if ($liburi) {
13252: $liburi=&declutter($liburi);
13253: $filename=$liburi;
13254: } else {
13255: &devalidate_cache_new('meta',$uri);
13256: undef(%metaentry);
13257: }
13258: my %metathesekeys=();
13259: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
13260: my $metastring;
13261: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
13262: my $which = &hreflocation('','/'.($liburi || $uri));
13263: $metastring =
13264: &Apache::lonnet::ssi_body($which,
13265: ('grade_target' => 'meta'));
13266: $cachetime = 1; # only want this cached in the child not long term
13267: } elsif (($uri !~ m -^(editupload)/-) &&
13268: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
13269: my $file=&filelocation('',&clutter($filename));
13270: #push(@{$metaentry{$uri.'.file'}},$file);
13271: $metastring=&getfile($file);
13272: }
13273: my $parser=HTML::LCParser->new(\$metastring);
13274: my $token;
13275: undef %metathesekeys;
13276: while ($token=$parser->get_token) {
13277: if ($token->[0] eq 'S') {
13278: if (defined($token->[2]->{'package'})) {
13279: #
13280: # This is a package - get package info
13281: #
13282: my $package=$token->[2]->{'package'};
13283: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
13284: if (defined($token->[2]->{'id'})) {
13285: $keyroot.='_'.$token->[2]->{'id'};
13286: }
13287: if ($metaentry{':packages'}) {
13288: $metaentry{':packages'}.=','.$package.$keyroot;
13289: } else {
13290: $metaentry{':packages'}=$package.$keyroot;
13291: }
13292: foreach my $pack_entry (keys(%packagetab)) {
13293: my $part=$keyroot;
13294: $part=~s/^\_//;
13295: if ($pack_entry=~/^\Q$package\E\&/ ||
13296: $pack_entry=~/^\Q$package\E_0\&/) {
13297: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
13298: # ignore package.tab specified default values
13299: # here &package_tab_default() will fetch those
13300: if ($subp eq 'default') { next; }
13301: my $value=$packagetab{$pack_entry};
13302: my $unikey;
13303: if ($pack =~ /_0$/) {
13304: $unikey='parameter_0_'.$name;
13305: $part=0;
13306: } else {
13307: $unikey='parameter'.$keyroot.'_'.$name;
13308: }
13309: if ($subp eq 'display') {
13310: $value.=' [Part: '.$part.']';
13311: }
13312: $metaentry{':'.$unikey.'.part'}=$part;
13313: $metathesekeys{$unikey}=1;
13314: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
13315: $metaentry{':'.$unikey.'.'.$subp}=$value;
13316: }
13317: if (defined($metaentry{':'.$unikey.'.default'})) {
13318: $metaentry{':'.$unikey}=
13319: $metaentry{':'.$unikey.'.default'};
13320: }
13321: }
13322: }
13323: } else {
13324: #
13325: # This is not a package - some other kind of start tag
13326: #
13327: my $entry=$token->[1];
13328: my $unikey='';
13329:
13330: if ($entry eq 'import') {
13331: #
13332: # Importing a library here
13333: #
13334: my $location=$parser->get_text('/import');
13335: my $dir=$filename;
13336: $dir=~s|[^/]*$||;
13337: $location=&filelocation($dir,$location);
13338:
13339: my $importid=$token->[2]->{'id'};
13340: my $importmode=$token->[2]->{'importmode'};
13341: #
13342: # Check metadata for imported file to
13343: # see if it contained response items
13344: #
13345: my ($origfile,@libfilekeys);
13346: my %currmetaentry = %metaentry;
13347: @libfilekeys = split(/,/,&metadata($location,'keys',undef,undef,undef,
13348: $depthcount+1));
13349: if (grep(/^responseorder$/,@libfilekeys)) {
13350: my $libresponseorder = &metadata($location,'responseorder',undef,undef,
13351: undef,$depthcount+1);
13352: if ($libresponseorder ne '') {
13353: if ($#origfiletagids<0) {
13354: undef(%importedrespids);
13355: undef(%importedpartids);
13356: }
13357: my @respids = split(/\s*,\s*/,$libresponseorder);
13358: if (@respids) {
13359: $importedrespids{$importid} = join(',',map { $importid.'_'.$_ } @respids);
13360: }
13361: if ($importedrespids{$importid} ne '') {
13362: $importedresponses = 1;
13363: # We need to get the original file and the imported file to get the response order correct
13364: # Load and inspect original file
13365: if ($#origfiletagids<0) {
13366: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
13367: $origfile=&getfile($origfilelocation);
13368: @origfiletagids=($origfile=~/<((?:\w+)response|import|part)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
13369: }
13370: }
13371: }
13372: }
13373: # Do not overwrite contents of %metaentry hash for resource itself with
13374: # hash populated for imported library file
13375: %metaentry = %currmetaentry;
13376: undef(%currmetaentry);
13377: if ($importmode eq 'part') {
13378: # Import as part(s)
13379: $importedparts=1;
13380: # We need to get the original file and the imported file to get the part order correct
13381: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
13382: # Load and inspect original file if we didn't do that already
13383: if ($#origfiletagids<0) {
13384: undef(%importedrespids);
13385: undef(%importedpartids);
13386: if ($origfile eq '') {
13387: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
13388: $origfile=&getfile($origfilelocation);
13389: @origfiletagids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
13390: }
13391: }
13392: my @impfilepartids;
13393: # If <partorder> tag is included in metadata for the imported file
13394: # get the parts in the imported file from that.
13395: if (grep(/^partorder$/,@libfilekeys)) {
13396: %currmetaentry = %metaentry;
13397: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
13398: $depthcount+1);
13399: %metaentry = %currmetaentry;
13400: undef(%currmetaentry);
13401: if ($libpartorder ne '') {
13402: @impfilepartids=split(/\s*,\s*/,$libpartorder);
13403: }
13404: } else {
13405: # If no <partorder> tag available, load and inspect imported file
13406: my $impfile=&getfile($location);
13407: @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
13408: }
13409: if ($#impfilepartids>=0) {
13410: # This problem had parts
13411: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
13412: } else {
13413: # Importing by turning a single problem into a problem part
13414: # It gets the import-tags ID as part-ID
13415: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
13416: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
13417: }
13418: } else {
13419: # Import as problem or as normal import
13420: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
13421: unless ($importmode eq 'problem') {
13422: # Normal import
13423: if (defined($token->[2]->{'id'})) {
13424: $unikey.='_'.$token->[2]->{'id'};
13425: }
13426: }
13427: # Check metadata for imported file to
13428: # see if it contained parts
13429: if (grep(/^partorder$/,@libfilekeys)) {
13430: %currmetaentry = %metaentry;
13431: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
13432: $depthcount+1);
13433: %metaentry = %currmetaentry;
13434: undef(%currmetaentry);
13435: if ($libpartorder ne '') {
13436: $importedparts = 1;
13437: $importedpartids{$token->[2]->{'id'}}=$libpartorder;
13438: }
13439: }
13440: }
13441: if ($depthcount<20) {
13442: my $metadata =
13443: &metadata($uri,'keys',$toolsymb,$location,$unikey,
13444: $depthcount+1);
13445: foreach my $meta (split(',',$metadata)) {
13446: $metaentry{':'.$meta}=$metaentry{':'.$meta};
13447: $metathesekeys{$meta}=1;
13448: }
13449: }
13450: } else {
13451: #
13452: # Not importing, some other kind of non-package, non-library start tag
13453: #
13454: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
13455: if (defined($token->[2]->{'id'})) {
13456: $unikey.='_'.$token->[2]->{'id'};
13457: }
13458: if (defined($token->[2]->{'name'})) {
13459: $unikey.='_'.$token->[2]->{'name'};
13460: }
13461: $metathesekeys{$unikey}=1;
13462: foreach my $param (@{$token->[3]}) {
13463: $metaentry{':'.$unikey.'.'.$param} =
13464: $token->[2]->{$param};
13465: }
13466: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
13467: my $default=$metaentry{':'.$unikey.'.default'};
13468: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
13469: # only ws inside the tag, and not in default, so use default
13470: # as value
13471: $metaentry{':'.$unikey}=$default;
13472: } elsif ( $internaltext =~ /\S/ ) {
13473: # something interesting inside the tag
13474: $metaentry{':'.$unikey}=$internaltext;
13475: } else {
13476: # no interesting values, don't set a default
13477: }
13478: # end of not-a-package not-a-library import
13479: }
13480: # end of not-a-package start tag
13481: }
13482: # the next is the end of "start tag"
13483: }
13484: }
13485: my ($extension) = ($uri =~ /\.(\w+)$/);
13486: $extension = lc($extension);
13487: if ($extension eq 'htm') { $extension='html'; }
13488:
13489: foreach my $key (keys(%packagetab)) {
13490: #no specific packages #how's our extension
13491: if ($key!~/^extension_\Q$extension\E&/) { next; }
13492: &metadata_create_package_def($uri,$key,'extension_'.$extension,
13493: \%metathesekeys);
13494: }
13495:
13496: if (!exists($metaentry{':packages'})
13497: || $packagetab{"import_defaults&extension_$extension"}) {
13498: foreach my $key (keys(%packagetab)) {
13499: #no specific packages well let's get default then
13500: if ($key!~/^default&/) { next; }
13501: &metadata_create_package_def($uri,$key,'default',
13502: \%metathesekeys);
13503: }
13504: }
13505: # are there custom rights to evaluate
13506: if ($metaentry{':copyright'} eq 'custom') {
13507:
13508: #
13509: # Importing a rights file here
13510: #
13511: unless ($depthcount) {
13512: my $location=$metaentry{':customdistributionfile'};
13513: my $dir=$filename;
13514: $dir=~s|[^/]*$||;
13515: $location=&filelocation($dir,$location);
13516: my $rights_metadata =
13517: &metadata($uri,'keys',$toolsymb,$location,'_rights',
13518: $depthcount+1);
13519: foreach my $rights (split(',',$rights_metadata)) {
13520: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
13521: $metathesekeys{$rights}=1;
13522: }
13523: }
13524: }
13525: # uniqifiy package listing
13526: my %seen;
13527: my @uniq_packages =
13528: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
13529: $metaentry{':packages'} = join(',',@uniq_packages);
13530:
13531: if (($importedresponses) || ($importedparts)) {
13532: if ($importedparts) {
13533: # We had imported parts and need to rebuild partorder
13534: $metaentry{':partorder'}='';
13535: $metathesekeys{'partorder'}=1;
13536: }
13537: if ($importedresponses) {
13538: # We had imported responses and need to rebuil responseorder
13539: $metaentry{':responseorder'}='';
13540: $metathesekeys{'responseorder'}=1;
13541: }
13542: for (my $index=0;$index<$#origfiletagids;$index+=2) {
13543: my $origid = $origfiletagids[$index+1];
13544: if ($origfiletagids[$index] eq 'part') {
13545: # Original part, part of the problem
13546: if ($importedparts) {
13547: $metaentry{':partorder'}.=','.$origid;
13548: }
13549: } elsif ($origfiletagids[$index] eq 'import') {
13550: if ($importedparts) {
13551: # We have imported parts at this position
13552: if ($importedpartids{$origid} ne '') {
13553: $metaentry{':partorder'}.=','.$importedpartids{$origid};
13554: }
13555: }
13556: if ($importedresponses) {
13557: # We have imported responses at this position
13558: if ($importedrespids{$origid} ne '') {
13559: $metaentry{':responseorder'}.=','.$importedrespids{$origid};
13560: }
13561: }
13562: } else {
13563: # Original response item, part of the problem
13564: if ($importedresponses) {
13565: $metaentry{':responseorder'}.=','.$origid;
13566: }
13567: }
13568: }
13569: if ($importedparts) {
13570: $metaentry{':partorder'}=~s/^\,//;
13571: }
13572: if ($importedresponses) {
13573: $metaentry{':responseorder'}=~s/^\,//;
13574: }
13575: }
13576: $metaentry{':keys'} = join(',',keys(%metathesekeys));
13577: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
13578: $metaentry{':allpossiblekeys'}=join(',',keys(%metathesekeys));
13579: unless ($liburi) {
13580: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
13581: }
13582: # this is the end of "was not already recently cached
13583: }
13584: return $metaentry{':'.$what};
13585: }
13586:
13587: sub metadata_create_package_def {
13588: my ($uri,$key,$package,$metathesekeys)=@_;
13589: my ($pack,$name,$subp)=split(/\&/,$key);
13590: if ($subp eq 'default') { next; }
13591:
13592: if (defined($metaentry{':packages'})) {
13593: $metaentry{':packages'}.=','.$package;
13594: } else {
13595: $metaentry{':packages'}=$package;
13596: }
13597: my $value=$packagetab{$key};
13598: my $unikey;
13599: $unikey='parameter_0_'.$name;
13600: $metaentry{':'.$unikey.'.part'}=0;
13601: $$metathesekeys{$unikey}=1;
13602: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
13603: $metaentry{':'.$unikey.'.'.$subp}=$value;
13604: }
13605: if (defined($metaentry{':'.$unikey.'.default'})) {
13606: $metaentry{':'.$unikey}=
13607: $metaentry{':'.$unikey.'.default'};
13608: }
13609: }
13610:
13611: sub metadata_generate_part0 {
13612: my ($metadata,$metacache,$uri) = @_;
13613: my %allnames;
13614: foreach my $metakey (keys(%$metadata)) {
13615: if ($metakey=~/^parameter\_(.*)/) {
13616: my $part=$$metacache{':'.$metakey.'.part'};
13617: my $name=$$metacache{':'.$metakey.'.name'};
13618: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
13619: $allnames{$name}=$part;
13620: }
13621: }
13622: }
13623: foreach my $name (keys(%allnames)) {
13624: $$metadata{"parameter_0_$name"}=1;
13625: my $key=":parameter_0_$name";
13626: $$metacache{"$key.part"}='0';
13627: $$metacache{"$key.name"}=$name;
13628: $$metacache{"$key.type"}=$$metacache{':parameter_'.
13629: $allnames{$name}.'_'.$name.
13630: '.type'};
13631: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
13632: '.display'};
13633: my $expr='[Part: '.$allnames{$name}.']';
13634: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
13635: $$metacache{"$key.display"}=$olddis;
13636: }
13637: }
13638:
13639: # ------------------------------------------------------ Devalidate title cache
13640:
13641: sub devalidate_title_cache {
13642: my ($url)=@_;
13643: if (!$env{'request.course.id'}) { return; }
13644: my $symb=&symbread($url);
13645: if (!$symb) { return; }
13646: my $key=$env{'request.course.id'}."\0".$symb;
13647: &devalidate_cache_new('title',$key);
13648: }
13649:
13650: # ------------------------------------------------- Get the title of a course
13651:
13652: sub current_course_title {
13653: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
13654: }
13655: # ------------------------------------------------- Get the title of a resource
13656:
13657: sub gettitle {
13658: my $urlsymb=shift;
13659: my $symb=&symbread($urlsymb);
13660: if ($symb) {
13661: my $key=$env{'request.course.id'}."\0".$symb;
13662: my ($result,$cached)=&is_cached_new('title',$key);
13663: if (defined($cached)) {
13664: return $result;
13665: }
13666: my ($map,$resid,$url)=&decode_symb($symb);
13667: my $title='';
13668: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
13669: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
13670: } else {
13671: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
13672: &GDBM_READER(),0640)) {
13673: my $mapid=$bighash{'map_pc_'.&clutter($map)};
13674: $title=$bighash{'title_'.$mapid.'.'.$resid};
13675: untie(%bighash);
13676: }
13677: }
13678: $title=~s/\&colon\;/\:/gs;
13679: if ($title) {
13680: # Remember both $symb and $title for dynamic metadata
13681: $accesshash{$symb.'___crstitle'}=$title;
13682: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
13683: # Cache this title and then return it
13684: return &do_cache_new('title',$key,$title,600);
13685: }
13686: $urlsymb=$url;
13687: }
13688: my $title=&metadata($urlsymb,'title');
13689: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
13690: return $title;
13691: }
13692:
13693: sub get_slot {
13694: my ($which,$cnum,$cdom)=@_;
13695: if (!$cnum || !$cdom) {
13696: (undef,my $courseid)=&whichuser();
13697: $cdom=$env{'course.'.$courseid.'.domain'};
13698: $cnum=$env{'course.'.$courseid.'.num'};
13699: }
13700: my $key=join("\0",'slots',$cdom,$cnum,$which);
13701: my %slotinfo;
13702: if (exists($remembered{$key})) {
13703: $slotinfo{$which} = $remembered{$key};
13704: } else {
13705: %slotinfo=&get('slots',[$which],$cdom,$cnum);
13706: &Apache::lonhomework::showhash(%slotinfo);
13707: my ($tmp)=keys(%slotinfo);
13708: if ($tmp=~/^error:/) { return (); }
13709: $remembered{$key} = $slotinfo{$which};
13710: }
13711: if (ref($slotinfo{$which}) eq 'HASH') {
13712: return %{$slotinfo{$which}};
13713: }
13714: return $slotinfo{$which};
13715: }
13716:
13717: sub get_reservable_slots {
13718: my ($cnum,$cdom,$uname,$udom) = @_;
13719: my $now = time;
13720: my $reservable_info;
13721: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
13722: if (exists($remembered{$key})) {
13723: $reservable_info = $remembered{$key};
13724: } else {
13725: my %resv;
13726: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
13727: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
13728: $reservable_info = \%resv;
13729: $remembered{$key} = $reservable_info;
13730: }
13731: return $reservable_info;
13732: }
13733:
13734: sub get_course_slots {
13735: my ($cnum,$cdom) = @_;
13736: my $hashid=$cnum.':'.$cdom;
13737: my ($result,$cached) = &is_cached_new('allslots',$hashid);
13738: if (defined($cached)) {
13739: if (ref($result) eq 'HASH') {
13740: return %{$result};
13741: }
13742: } else {
13743: my %slots=&dump('slots',$cdom,$cnum);
13744: my ($tmp) = keys(%slots);
13745: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
13746: &do_cache_new('allslots',$hashid,\%slots,600);
13747: return %slots;
13748: }
13749: }
13750: return;
13751: }
13752:
13753: sub devalidate_slots_cache {
13754: my ($cnum,$cdom)=@_;
13755: my $hashid=$cnum.':'.$cdom;
13756: &devalidate_cache_new('allslots',$hashid);
13757: }
13758:
13759: sub get_coursechange {
13760: my ($cdom,$cnum) = @_;
13761: if ($cdom eq '' || $cnum eq '') {
13762: return unless ($env{'request.course.id'});
13763: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
13764: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
13765: }
13766: my $hashid=$cdom.'_'.$cnum;
13767: my ($change,$cached)=&is_cached_new('crschange',$hashid);
13768: if ((defined($cached)) && ($change ne '')) {
13769: return $change;
13770: } else {
13771: my %crshash;
13772: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
13773: if ($crshash{'internal.contentchange'} eq '') {
13774: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
13775: if ($change eq '') {
13776: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
13777: $change = $crshash{'internal.created'};
13778: }
13779: } else {
13780: $change = $crshash{'internal.contentchange'};
13781: }
13782: my $cachetime = 600;
13783: &do_cache_new('crschange',$hashid,$change,$cachetime);
13784: }
13785: return $change;
13786: }
13787:
13788: sub devalidate_coursechange_cache {
13789: my ($cdom,$cnum)=@_;
13790: my $hashid=$cdom.'_'.$cnum;
13791: &devalidate_cache_new('crschange',$hashid);
13792: }
13793:
13794: sub get_suppchange {
13795: my ($cdom,$cnum) = @_;
13796: if ($cdom eq '' || $cnum eq '') {
13797: return unless ($env{'request.course.id'});
13798: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
13799: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
13800: }
13801: my $hashid=$cdom.'_'.$cnum;
13802: my ($change,$cached)=&is_cached_new('suppchange',$hashid);
13803: if ((defined($cached)) && ($change ne '')) {
13804: return $change;
13805: } else {
13806: my %crshash = &get('environment',['internal.supplementalchange'],$cdom,$cnum);
13807: if ($crshash{'internal.supplementalchange'} eq '') {
13808: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
13809: if ($change eq '') {
13810: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
13811: $change = $crshash{'internal.created'};
13812: }
13813: } else {
13814: $change = $crshash{'internal.supplementalchange'};
13815: }
13816: my $cachetime = 600;
13817: &do_cache_new('suppchange',$hashid,$change,$cachetime);
13818: }
13819: return $change;
13820: }
13821:
13822: sub devalidate_suppchange_cache {
13823: my ($cdom,$cnum)=@_;
13824: my $hashid=$cdom.'_'.$cnum;
13825: &devalidate_cache_new('suppchange',$hashid);
13826: }
13827:
13828: sub update_supp_caches {
13829: my ($cdom,$cnum) = @_;
13830: my %servers = &internet_dom_servers($cdom);
13831: my @ids=¤t_machine_ids();
13832: foreach my $server (keys(%servers)) {
13833: next if (grep(/^\Q$server\E$/,@ids));
13834: my $hashid=$cnum.':'.$cdom;
13835: my $cachekey = &escape('showsupp').':'.&escape($hashid);
13836: &remote_devalidate_cache($server,[$cachekey]);
13837: }
13838: &has_unhidden_suppfiles($cnum,$cdom,1,1);
13839: &count_supptools($cnum,$cdom,1);
13840: my $now = time;
13841: if ($env{'request.course.id'} eq $cdom.'_'.$cnum) {
13842: &Apache::lonnet::appenv({'request.course.suppupdated' => $now});
13843: }
13844: &put('environment',{'internal.supplementalchange' => $now},
13845: $cdom,$cnum);
13846: &Apache::lonnet::appenv(
13847: {'course.'.$cdom.'_'.$cnum.'.internal.supplementalchange' => $now});
13848: &do_cache_new('suppchange',$cdom.'_'.$cnum,$now,600);
13849: }
13850:
13851: # ------------------------------------------------- Update symbolic store links
13852:
13853: sub symblist {
13854: my ($mapname,%newhash)=@_;
13855: $mapname=&deversion(&declutter($mapname));
13856: my %hash;
13857: if (($env{'request.course.fn'}) && (%newhash)) {
13858: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
13859: &GDBM_WRCREAT(),0640)) {
13860: foreach my $url (keys(%newhash)) {
13861: next if ($url eq 'last_known'
13862: && $env{'form.no_update_last_known'});
13863: $hash{declutter($url)}=&encode_symb($mapname,
13864: $newhash{$url}->[1],
13865: $newhash{$url}->[0]);
13866: }
13867: if (untie(%hash)) {
13868: return 'ok';
13869: }
13870: }
13871: }
13872: return 'error';
13873: }
13874:
13875: # --------------------------------------------------------------- Verify a symb
13876:
13877: sub symbverify {
13878: my ($symb,$thisurl,$encstate)=@_;
13879: my $thisfn=$thisurl;
13880: $thisfn=&declutter($thisfn);
13881: # direct jump to resource in page or to a sequence - will construct own symbs
13882: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
13883: # check URL part
13884: my ($map,$resid,$url)=&decode_symb($symb);
13885:
13886: unless ($url eq $thisfn) { return 0; }
13887:
13888: $symb=&symbclean($symb);
13889: $thisurl=&deversion($thisurl);
13890: $thisfn=&deversion($thisfn);
13891:
13892: my %bighash;
13893: my $okay=0;
13894:
13895: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
13896: &GDBM_READER(),0640)) {
13897: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
13898: $thisurl =~ s/\?.+$//;
13899: if ($map =~ m{^uploaded/.+\.page$}) {
13900: $thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
13901: $thisurl =~ s{^\Qhttp://https://\E}{https://};
13902: }
13903: }
13904: my $ids;
13905: if ($map =~ m{^uploaded/.+\.page$}) {
13906: $ids=$bighash{'ids_'.&clutter_with_no_wrapper($thisurl)};
13907: } else {
13908: $ids=$bighash{'ids_'.&clutter($thisurl)};
13909: }
13910: unless ($ids) {
13911: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
13912: $ids=$bighash{$idkey};
13913: }
13914: if ($ids) {
13915: # ------------------------------------------------------------------- Has ID(s)
13916: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
13917: $symb =~ s/\?.+$//;
13918: }
13919: foreach my $id (split(/\,/,$ids)) {
13920: my ($mapid,$resid)=split(/\./,$id);
13921: if (
13922: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
13923: eq $symb) {
13924: if (ref($encstate)) {
13925: $$encstate = $bighash{'encrypted_'.$id};
13926: }
13927: if (($env{'request.role.adv'}) ||
13928: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
13929: ($thisurl eq '/adm/navmaps')) {
13930: $okay=1;
13931: last;
13932: }
13933: }
13934: }
13935: }
13936: untie(%bighash);
13937: }
13938: return $okay;
13939: }
13940:
13941: # --------------------------------------------------------------- Clean-up symb
13942:
13943: sub symbclean {
13944: my $symb=shift;
13945: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
13946: # remove version from map
13947: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
13948:
13949: # remove version from URL
13950: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
13951:
13952: # remove wrapper
13953:
13954: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
13955: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
13956: return $symb;
13957: }
13958:
13959: # ---------------------------------------------- Split symb to find map and url
13960:
13961: sub encode_symb {
13962: my ($map,$resid,$url)=@_;
13963: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
13964: }
13965:
13966: sub decode_symb {
13967: my $symb=shift;
13968: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
13969: my ($map,$resid,$url)=split(/___/,$symb);
13970: return (&fixversion($map),$resid,&fixversion($url));
13971: }
13972:
13973: sub fixversion {
13974: my $fn=shift;
13975: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
13976: my %bighash;
13977: my $uri=&clutter($fn);
13978: my $key=$env{'request.course.id'}.'_'.$uri;
13979: # is this cached?
13980: my ($result,$cached)=&is_cached_new('courseresversion',$key);
13981: if (defined($cached)) { return $result; }
13982: # unfortunately not cached, or expired
13983: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
13984: &GDBM_READER(),0640)) {
13985: if ($bighash{'version_'.$uri}) {
13986: my $version=$bighash{'version_'.$uri};
13987: unless (($version eq 'mostrecent') ||
13988: ($version==&getversion($uri))) {
13989: $uri=~s/\.(\w+)$/\.$version\.$1/;
13990: }
13991: }
13992: untie %bighash;
13993: }
13994: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
13995: }
13996:
13997: sub deversion {
13998: my $url=shift;
13999: $url=~s/\.\d+\.(\w+)$/\.$1/;
14000: return $url;
14001: }
14002:
14003: # ------------------------------------------------------ Return symb list entry
14004:
14005: sub symbread {
14006: my ($thisfn,$donotrecurse,$ignorecachednull,$checkforblock,$possibles,
14007: $ignoresymbdb,$noenccheck)=@_;
14008: my $cache_str='request.symbread.cached.'.$thisfn;
14009: if (defined($env{$cache_str})) {
14010: unless (ref($possibles) eq 'HASH') {
14011: if ($ignorecachednull) {
14012: return $env{$cache_str} unless ($env{$cache_str} eq '');
14013: } else {
14014: return $env{$cache_str};
14015: }
14016: }
14017: }
14018: # no filename provided? try from environment
14019: unless ($thisfn) {
14020: if ($env{'request.symb'}) {
14021: return $env{$cache_str}=&symbclean($env{'request.symb'});
14022: }
14023: $thisfn=$env{'request.filename'};
14024: }
14025: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
14026: # is that filename actually a symb? Verify, clean, and return
14027: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
14028: if (&symbverify($thisfn,$1)) {
14029: return $env{$cache_str}=&symbclean($thisfn);
14030: }
14031: }
14032: $thisfn=declutter($thisfn);
14033: my %hash;
14034: my %bighash;
14035: my $syval='';
14036: if (($env{'request.course.fn'}) && ($thisfn)) {
14037: unless ($ignoresymbdb) {
14038: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
14039: &GDBM_READER(),0640)) {
14040: $syval=$hash{$thisfn};
14041: untie(%hash);
14042: }
14043: if ($syval && $checkforblock) {
14044: my @blockers = &has_comm_blocking('bre',$syval,$thisfn,$ignoresymbdb,$noenccheck);
14045: if (@blockers) {
14046: $syval='';
14047: }
14048: }
14049: }
14050: # ---------------------------------------------------------- There was an entry
14051: if ($syval) {
14052: #unless ($syval=~/\_\d+$/) {
14053: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
14054: #&appenv({'request.ambiguous' => $thisfn});
14055: #return $env{$cache_str}='';
14056: #}
14057: #$syval.=$1;
14058: #}
14059: } else {
14060: # ------------------------------------------------------- Was not in symb table
14061: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
14062: &GDBM_READER(),0640)) {
14063: # ---------------------------------------------- Get ID(s) for current resource
14064: my $ids=$bighash{'ids_'.&clutter($thisfn)};
14065: unless ($ids) {
14066: $ids=$bighash{'ids_/'.$thisfn};
14067: }
14068: unless ($ids) {
14069: # alias?
14070: $ids=$bighash{'mapalias_'.$thisfn};
14071: }
14072: if ($ids) {
14073: # ------------------------------------------------------------------- Has ID(s)
14074: my @possibilities=split(/\,/,$ids);
14075: if ($#possibilities==0) {
14076: # ----------------------------------------------- There is only one possibility
14077: my ($mapid,$resid)=split(/\./,$ids);
14078: $syval=&encode_symb($bighash{'map_id_'.$mapid},
14079: $resid,$thisfn);
14080: if (ref($possibles) eq 'HASH') {
14081: unless ($bighash{'randomout_'.$ids} || $env{'request.role.adv'}) {
14082: $possibles->{$syval} = 1;
14083: }
14084: }
14085: if ($checkforblock) {
14086: unless ($bighash{'randomout_'.$ids} || $env{'request.role.adv'}) {
14087: my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids},'',$noenccheck);
14088: if (@blockers) {
14089: $syval = '';
14090: untie(%bighash);
14091: return $env{$cache_str}='';
14092: }
14093: }
14094: }
14095: } elsif ((!$donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
14096: # ------------------------------------------ There is more than one possibility
14097: my $realpossible=0;
14098: foreach my $id (@possibilities) {
14099: my $file=$bighash{'src_'.$id};
14100: my $canaccess;
14101: if (($donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
14102: $canaccess = 1;
14103: } else {
14104: $canaccess = &allowed('bre',$file);
14105: }
14106: if ($canaccess) {
14107: my ($mapid,$resid)=split(/\./,$id);
14108: if ($bighash{'map_type_'.$mapid} ne 'page') {
14109: my $poss_syval=&encode_symb($bighash{'map_id_'.$mapid},
14110: $resid,$thisfn);
14111: next if ($bighash{'randomout_'.$id} && !$env{'request.role.adv'});
14112: next unless (($noenccheck) || ($bighash{'encrypted_'.$id} eq $env{'request.enc'}));
14113: if ($checkforblock) {
14114: my @blockers = &has_comm_blocking('bre',$poss_syval,$file,'',$noenccheck);
14115: if (@blockers > 0) {
14116: $syval = '';
14117: } else {
14118: $syval = $poss_syval;
14119: $realpossible++;
14120: }
14121: } else {
14122: $syval = $poss_syval;
14123: $realpossible++;
14124: }
14125: if ($syval) {
14126: if (ref($possibles) eq 'HASH') {
14127: $possibles->{$syval} = 1;
14128: }
14129: }
14130: }
14131: }
14132: }
14133: if ($realpossible!=1) { $syval=''; }
14134: } else {
14135: $syval='';
14136: }
14137: }
14138: untie(%bighash);
14139: }
14140: }
14141: if ($syval) {
14142: return $env{$cache_str}=$syval;
14143: }
14144: }
14145: &appenv({'request.ambiguous' => $thisfn});
14146: return $env{$cache_str}='';
14147: }
14148:
14149: # ---------------------------------------------------------- Return random seed
14150:
14151: sub numval {
14152: my $txt=shift;
14153: $txt=~tr/A-J/0-9/;
14154: $txt=~tr/a-j/0-9/;
14155: $txt=~tr/K-T/0-9/;
14156: $txt=~tr/k-t/0-9/;
14157: $txt=~tr/U-Z/0-5/;
14158: $txt=~tr/u-z/0-5/;
14159: $txt=~s/\D//g;
14160: if ($_64bit) { if ($txt > 2**32) { return -1; } }
14161: return int($txt);
14162: }
14163:
14164: sub numval2 {
14165: my $txt=shift;
14166: $txt=~tr/A-J/0-9/;
14167: $txt=~tr/a-j/0-9/;
14168: $txt=~tr/K-T/0-9/;
14169: $txt=~tr/k-t/0-9/;
14170: $txt=~tr/U-Z/0-5/;
14171: $txt=~tr/u-z/0-5/;
14172: $txt=~s/\D//g;
14173: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
14174: my $total;
14175: foreach my $val (@txts) { $total+=$val; }
14176: if ($_64bit) { if ($total > 2**32) { return -1; } }
14177: return int($total);
14178: }
14179:
14180: sub numval3 {
14181: use integer;
14182: my $txt=shift;
14183: $txt=~tr/A-J/0-9/;
14184: $txt=~tr/a-j/0-9/;
14185: $txt=~tr/K-T/0-9/;
14186: $txt=~tr/k-t/0-9/;
14187: $txt=~tr/U-Z/0-5/;
14188: $txt=~tr/u-z/0-5/;
14189: $txt=~s/\D//g;
14190: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
14191: my $total;
14192: foreach my $val (@txts) { $total+=$val; }
14193: if ($_64bit) { $total=(($total<<32)>>32); }
14194: return $total;
14195: }
14196:
14197: sub digest {
14198: my ($data)=@_;
14199: my $digest=&Digest::MD5::md5($data);
14200: my ($a,$b,$c,$d)=unpack("iiii",$digest);
14201: my ($e,$f);
14202: {
14203: use integer;
14204: $e=($a+$b);
14205: $f=($c+$d);
14206: if ($_64bit) {
14207: $e=(($e<<32)>>32);
14208: $f=(($f<<32)>>32);
14209: }
14210: }
14211: if (wantarray) {
14212: return ($e,$f);
14213: } else {
14214: my $g;
14215: {
14216: use integer;
14217: $g=($e+$f);
14218: if ($_64bit) {
14219: $g=(($g<<32)>>32);
14220: }
14221: }
14222: return $g;
14223: }
14224: }
14225:
14226: sub latest_rnd_algorithm_id {
14227: return '64bit5';
14228: }
14229:
14230: sub get_rand_alg {
14231: my ($courseid)=@_;
14232: if (!$courseid) { $courseid=(&whichuser())[1]; }
14233: if ($courseid) {
14234: return $env{"course.$courseid.rndseed"};
14235: }
14236: return &latest_rnd_algorithm_id();
14237: }
14238:
14239: sub validCODE {
14240: my ($CODE)=@_;
14241: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
14242: return 0;
14243: }
14244:
14245: sub getCODE {
14246: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
14247: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
14248: defined($Apache::lonhomework::parsing_a_task) ) &&
14249: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
14250: return $Apache::lonhomework::history{'resource.CODE'};
14251: }
14252: return undef;
14253: }
14254: #
14255: # Determines the random seed for a specific context:
14256: #
14257: # parameters:
14258: # symb - in course context the symb for the seed.
14259: # course_id - The course id of the form domain_coursenum.
14260: # domain - Domain for the user.
14261: # course - Course for the user.
14262: # cenv - environment of the course.
14263: #
14264: # NOTE:
14265: # All parameters are picked out of the environment if missing
14266: # or not defined.
14267: # If a symb cannot be determined the current time is used instead.
14268: #
14269: # For a given well defined symb, courside, domain, username,
14270: # and course environment, the seed is reproducible.
14271: #
14272: sub rndseed {
14273: my ($symb,$courseid,$domain,$username, $cenv)=@_;
14274: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
14275: if (!defined($symb)) {
14276: unless ($symb=$wsymb) { return time; }
14277: }
14278: if (!defined $courseid) {
14279: $courseid=$wcourseid;
14280: }
14281: if (!defined $domain) { $domain=$wdomain; }
14282: if (!defined $username) { $username=$wusername }
14283:
14284: my $which;
14285: if (defined($cenv->{'rndseed'})) {
14286: $which = $cenv->{'rndseed'};
14287: } else {
14288: $which =&get_rand_alg($courseid);
14289: }
14290: if (defined(&getCODE())) {
14291:
14292: if ($which eq '64bit5') {
14293: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
14294: } elsif ($which eq '64bit4') {
14295: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
14296: } else {
14297: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
14298: }
14299: } elsif ($which eq '64bit5') {
14300: return &rndseed_64bit5($symb,$courseid,$domain,$username);
14301: } elsif ($which eq '64bit4') {
14302: return &rndseed_64bit4($symb,$courseid,$domain,$username);
14303: } elsif ($which eq '64bit3') {
14304: return &rndseed_64bit3($symb,$courseid,$domain,$username);
14305: } elsif ($which eq '64bit2') {
14306: return &rndseed_64bit2($symb,$courseid,$domain,$username);
14307: } elsif ($which eq '64bit') {
14308: return &rndseed_64bit($symb,$courseid,$domain,$username);
14309: }
14310: return &rndseed_32bit($symb,$courseid,$domain,$username);
14311: }
14312:
14313: sub rndseed_32bit {
14314: my ($symb,$courseid,$domain,$username)=@_;
14315: {
14316: use integer;
14317: my $symbchck=unpack("%32C*",$symb) << 27;
14318: my $symbseed=numval($symb) << 22;
14319: my $namechck=unpack("%32C*",$username) << 17;
14320: my $nameseed=numval($username) << 12;
14321: my $domainseed=unpack("%32C*",$domain) << 7;
14322: my $courseseed=unpack("%32C*",$courseid);
14323: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
14324: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
14325: #&logthis("rndseed :$num:$symb");
14326: if ($_64bit) { $num=(($num<<32)>>32); }
14327: return $num;
14328: }
14329: }
14330:
14331: sub rndseed_64bit {
14332: my ($symb,$courseid,$domain,$username)=@_;
14333: {
14334: use integer;
14335: my $symbchck=unpack("%32S*",$symb) << 21;
14336: my $symbseed=numval($symb) << 10;
14337: my $namechck=unpack("%32S*",$username);
14338:
14339: my $nameseed=numval($username) << 21;
14340: my $domainseed=unpack("%32S*",$domain) << 10;
14341: my $courseseed=unpack("%32S*",$courseid);
14342:
14343: my $num1=$symbchck+$symbseed+$namechck;
14344: my $num2=$nameseed+$domainseed+$courseseed;
14345: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
14346: #&logthis("rndseed :$num:$symb");
14347: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
14348: return "$num1,$num2";
14349: }
14350: }
14351:
14352: sub rndseed_64bit2 {
14353: my ($symb,$courseid,$domain,$username)=@_;
14354: {
14355: use integer;
14356: # strings need to be an even # of cahracters long, it it is odd the
14357: # last characters gets thrown away
14358: my $symbchck=unpack("%32S*",$symb.' ') << 21;
14359: my $symbseed=numval($symb) << 10;
14360: my $namechck=unpack("%32S*",$username.' ');
14361:
14362: my $nameseed=numval($username) << 21;
14363: my $domainseed=unpack("%32S*",$domain.' ') << 10;
14364: my $courseseed=unpack("%32S*",$courseid.' ');
14365:
14366: my $num1=$symbchck+$symbseed+$namechck;
14367: my $num2=$nameseed+$domainseed+$courseseed;
14368: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
14369: #&logthis("rndseed :$num:$symb");
14370: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
14371: return "$num1,$num2";
14372: }
14373: }
14374:
14375: sub rndseed_64bit3 {
14376: my ($symb,$courseid,$domain,$username)=@_;
14377: {
14378: use integer;
14379: # strings need to be an even # of cahracters long, it it is odd the
14380: # last characters gets thrown away
14381: my $symbchck=unpack("%32S*",$symb.' ') << 21;
14382: my $symbseed=numval2($symb) << 10;
14383: my $namechck=unpack("%32S*",$username.' ');
14384:
14385: my $nameseed=numval2($username) << 21;
14386: my $domainseed=unpack("%32S*",$domain.' ') << 10;
14387: my $courseseed=unpack("%32S*",$courseid.' ');
14388:
14389: my $num1=$symbchck+$symbseed+$namechck;
14390: my $num2=$nameseed+$domainseed+$courseseed;
14391: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
14392: #&logthis("rndseed :$num1:$num2:$_64bit");
14393: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
14394:
14395: return "$num1:$num2";
14396: }
14397: }
14398:
14399: sub rndseed_64bit4 {
14400: my ($symb,$courseid,$domain,$username)=@_;
14401: {
14402: use integer;
14403: # strings need to be an even # of cahracters long, it it is odd the
14404: # last characters gets thrown away
14405: my $symbchck=unpack("%32S*",$symb.' ') << 21;
14406: my $symbseed=numval3($symb) << 10;
14407: my $namechck=unpack("%32S*",$username.' ');
14408:
14409: my $nameseed=numval3($username) << 21;
14410: my $domainseed=unpack("%32S*",$domain.' ') << 10;
14411: my $courseseed=unpack("%32S*",$courseid.' ');
14412:
14413: my $num1=$symbchck+$symbseed+$namechck;
14414: my $num2=$nameseed+$domainseed+$courseseed;
14415: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
14416: #&logthis("rndseed :$num1:$num2:$_64bit");
14417: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
14418:
14419: return "$num1:$num2";
14420: }
14421: }
14422:
14423: sub rndseed_64bit5 {
14424: my ($symb,$courseid,$domain,$username)=@_;
14425: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
14426: return "$num1:$num2";
14427: }
14428:
14429: sub rndseed_CODE_64bit {
14430: my ($symb,$courseid,$domain,$username)=@_;
14431: {
14432: use integer;
14433: my $symbchck=unpack("%32S*",$symb.' ') << 16;
14434: my $symbseed=numval2($symb);
14435: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
14436: my $CODEseed=numval(&getCODE());
14437: my $courseseed=unpack("%32S*",$courseid.' ');
14438: my $num1=$symbseed+$CODEchck;
14439: my $num2=$CODEseed+$courseseed+$symbchck;
14440: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
14441: #&logthis("rndseed :$num1:$num2:$symb");
14442: if ($_64bit) { $num1=(($num1<<32)>>32); }
14443: if ($_64bit) { $num2=(($num2<<32)>>32); }
14444: return "$num1:$num2";
14445: }
14446: }
14447:
14448: sub rndseed_CODE_64bit4 {
14449: my ($symb,$courseid,$domain,$username)=@_;
14450: {
14451: use integer;
14452: my $symbchck=unpack("%32S*",$symb.' ') << 16;
14453: my $symbseed=numval3($symb);
14454: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
14455: my $CODEseed=numval3(&getCODE());
14456: my $courseseed=unpack("%32S*",$courseid.' ');
14457: my $num1=$symbseed+$CODEchck;
14458: my $num2=$CODEseed+$courseseed+$symbchck;
14459: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
14460: #&logthis("rndseed :$num1:$num2:$symb");
14461: if ($_64bit) { $num1=(($num1<<32)>>32); }
14462: if ($_64bit) { $num2=(($num2<<32)>>32); }
14463: return "$num1:$num2";
14464: }
14465: }
14466:
14467: sub rndseed_CODE_64bit5 {
14468: my ($symb,$courseid,$domain,$username)=@_;
14469: my $code = &getCODE();
14470: my ($num1,$num2)=&digest("$symb,$courseid,$code");
14471: return "$num1:$num2";
14472: }
14473:
14474: sub setup_random_from_rndseed {
14475: my ($rndseed)=@_;
14476: if ($rndseed =~/([,:])/) {
14477: my ($num1,$num2) = map { abs($_); } (split(/[,:]/,$rndseed));
14478: if ((!$num1) || (!$num2) || ($num1 > 2147483562) || ($num2 > 2147483398)) {
14479: &Math::Random::random_set_seed_from_phrase($rndseed);
14480: } else {
14481: &Math::Random::random_set_seed($num1,$num2);
14482: }
14483: } else {
14484: &Math::Random::random_set_seed_from_phrase($rndseed);
14485: }
14486: }
14487:
14488: sub latest_receipt_algorithm_id {
14489: return 'receipt3';
14490: }
14491:
14492: sub recunique {
14493: my $fucourseid=shift;
14494: my $unique;
14495: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
14496: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
14497: $unique=$env{"course.$fucourseid.internal.encseed"};
14498: } else {
14499: $unique=$perlvar{'lonReceipt'};
14500: }
14501: return unpack("%32C*",$unique);
14502: }
14503:
14504: sub recprefix {
14505: my $fucourseid=shift;
14506: my $prefix;
14507: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
14508: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
14509: $prefix=$env{"course.$fucourseid.internal.encpref"};
14510: } else {
14511: $prefix=$perlvar{'lonHostID'};
14512: }
14513: return unpack("%32C*",$prefix);
14514: }
14515:
14516: sub ireceipt {
14517: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
14518:
14519: my $return =&recprefix($fucourseid).'-';
14520:
14521: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
14522: $env{'request.state'} eq 'construct') {
14523: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
14524: return $return;
14525: }
14526:
14527: my $cuname=unpack("%32C*",$funame);
14528: my $cudom=unpack("%32C*",$fudom);
14529: my $cucourseid=unpack("%32C*",$fucourseid);
14530: my $cusymb=unpack("%32C*",$fusymb);
14531: my $cunique=&recunique($fucourseid);
14532: my $cpart=unpack("%32S*",$part);
14533: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
14534:
14535: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
14536:
14537: $return.= ($cunique%$cuname+
14538: $cunique%$cudom+
14539: $cusymb%$cuname+
14540: $cusymb%$cudom+
14541: $cucourseid%$cuname+
14542: $cucourseid%$cudom+
14543: $cpart%$cuname+
14544: $cpart%$cudom);
14545: } else {
14546: $return.= ($cunique%$cuname+
14547: $cunique%$cudom+
14548: $cusymb%$cuname+
14549: $cusymb%$cudom+
14550: $cucourseid%$cuname+
14551: $cucourseid%$cudom);
14552: }
14553: return $return;
14554: }
14555:
14556: sub receipt {
14557: my ($part)=@_;
14558: my ($symb,$courseid,$domain,$name) = &whichuser();
14559: return &ireceipt($name,$domain,$courseid,$symb,$part);
14560: }
14561:
14562: sub whichuser {
14563: my ($passedsymb)=@_;
14564: my ($symb,$courseid,$domain,$name,$publicuser);
14565: if (defined($env{'form.grade_symb'})) {
14566: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
14567: my $allowed=&allowed('vgr',$tmp_courseid);
14568: if (!$allowed &&
14569: exists($env{'request.course.sec'}) &&
14570: $env{'request.course.sec'} !~ /^\s*$/) {
14571: $allowed=&allowed('vgr',$tmp_courseid.
14572: '/'.$env{'request.course.sec'});
14573: }
14574: if ($allowed) {
14575: ($symb)=&get_env_multiple('form.grade_symb');
14576: $courseid=$tmp_courseid;
14577: ($domain)=&get_env_multiple('form.grade_domain');
14578: ($name)=&get_env_multiple('form.grade_username');
14579: return ($symb,$courseid,$domain,$name,$publicuser);
14580: }
14581: }
14582: if (!$passedsymb) {
14583: $symb=&symbread();
14584: } else {
14585: $symb=$passedsymb;
14586: }
14587: $courseid=$env{'request.course.id'};
14588: $domain=$env{'user.domain'};
14589: $name=$env{'user.name'};
14590: if ($name eq 'public' && $domain eq 'public') {
14591: if (!defined($env{'form.username'})) {
14592: $env{'form.username'}.=time.rand(10000000);
14593: }
14594: $name.=$env{'form.username'};
14595: }
14596: return ($symb,$courseid,$domain,$name,$publicuser);
14597:
14598: }
14599:
14600: # ------------------------------------------------------------ Serves up a file
14601: # returns either the contents of the file or
14602: # -1 if the file doesn't exist
14603: #
14604: # if the target is a file that was uploaded via DOCS,
14605: # a check will be made to see if a current copy exists on the local server,
14606: # if it does this will be served, otherwise a copy will be retrieved from
14607: # the home server for the course and stored in /home/httpd/html/userfiles on
14608: # the local server.
14609:
14610: sub getfile {
14611: my ($file) = @_;
14612: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
14613: &repcopy($file);
14614: return &readfile($file);
14615: }
14616:
14617: sub repcopy_userfile {
14618: my ($file)=@_;
14619: my $londocroot = $perlvar{'lonDocRoot'};
14620: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
14621: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
14622: my ($cdom,$cnum,$filename) =
14623: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
14624: my $uri="/uploaded/$cdom/$cnum/$filename";
14625: if (-e "$file") {
14626: # we already have a local copy, check it out
14627: my @fileinfo = stat($file);
14628: my $rtncode;
14629: my $info;
14630: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
14631: if ($lwpresp ne 'ok') {
14632: # there is no such file anymore, even though we had a local copy
14633: if ($rtncode eq '404') {
14634: unlink($file);
14635: }
14636: return -1;
14637: }
14638: if ($info < $fileinfo[9]) {
14639: # nice, the file we have is up-to-date, just say okay
14640: return 'ok';
14641: } else {
14642: # the file is outdated, get rid of it
14643: unlink($file);
14644: }
14645: }
14646: # one way or the other, at this point, we don't have the file
14647: # construct the correct path for the file
14648: my @parts = ($cdom,$cnum);
14649: if ($filename =~ m|^(.+)/[^/]+$|) {
14650: push @parts, split(/\//,$1);
14651: }
14652: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
14653: foreach my $part (@parts) {
14654: $path .= '/'.$part;
14655: if (!-e $path) {
14656: mkdir($path,0770);
14657: }
14658: }
14659: # now the path exists for sure
14660: # get a user agent
14661: my $transferfile=$file.'.in.transfer';
14662: # FIXME: this should flock
14663: if (-e $transferfile) { return 'ok'; }
14664: my $request;
14665: $uri=~s/^\///;
14666: my $homeserver = &homeserver($cnum,$cdom);
14667: my $hostname = &hostname($homeserver);
14668: my $protocol = $protocol{$homeserver};
14669: $protocol = 'http' if ($protocol ne 'https');
14670: $request=new HTTP::Request('GET',$protocol.'://'.$hostname.'/raw/'.$uri);
14671: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,$transferfile,\%perlvar,'',0,1);
14672: # did it work?
14673: if ($response->is_error()) {
14674: unlink($transferfile);
14675: &logthis("Userfile repcopy failed for $uri");
14676: return -1;
14677: }
14678: # worked, rename the transfer file
14679: rename($transferfile,$file);
14680: return 'ok';
14681: }
14682:
14683: sub tokenwrapper {
14684: my $uri=shift;
14685: $uri=~s|^https?\://([^/]+)||;
14686: $uri=~s|^/||;
14687: $env{'user.environment'}=~/\/([^\/]+)\.id/;
14688: my $token=$1;
14689: my (undef,$udom,$uname,$file)=split('/',$uri,4);
14690: if ($udom && $uname && $file) {
14691: $file=~s|(\?\.*)*$||;
14692: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
14693: my $homeserver = &homeserver($uname,$udom);
14694: my $hostname = &hostname($homeserver);
14695: my $protocol = $protocol{$homeserver};
14696: $protocol = 'http' if ($protocol ne 'https');
14697: return $protocol.'://'.$hostname.'/'.$uri.
14698: (($uri=~/\?/)?'&':'?').'token='.$token.
14699: '&tokenissued='.$perlvar{'lonHostID'};
14700: } else {
14701: return '/adm/notfound.html';
14702: }
14703: }
14704:
14705: # call with reqtype HEAD: get last modification time
14706: # call with reqtype GET: get the file contents
14707: # Do not call this with reqtype GET for large files! It loads everything into memory
14708: #
14709: sub getuploaded {
14710: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
14711: $uri=~s/^\///;
14712: my $homeserver = &homeserver($cnum,$cdom);
14713: my $hostname = &hostname($homeserver);
14714: my $protocol = $protocol{$homeserver};
14715: $protocol = 'http' if ($protocol ne 'https');
14716: $uri = $protocol.'://'.$hostname.'/raw/'.$uri;
14717: my $request=new HTTP::Request($reqtype,$uri);
14718: my $response=&LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,'',0,1);
14719: $$rtncode = $response->code;
14720: if (! $response->is_success()) {
14721: return 'failed';
14722: }
14723: if ($reqtype eq 'HEAD') {
14724: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
14725: } elsif ($reqtype eq 'GET') {
14726: $$info = $response->content;
14727: }
14728: return 'ok';
14729: }
14730:
14731: sub readfile {
14732: my $file = shift;
14733: if ( (! -e $file ) || ($file eq '') ) { return -1; };
14734: my $fh;
14735: open($fh,"<",$file);
14736: my $a='';
14737: while (my $line = <$fh>) { $a .= $line; }
14738: return $a;
14739: }
14740:
14741: sub filelocation {
14742: my ($dir,$file) = @_;
14743: my $location;
14744: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
14745:
14746: if ($file =~ m-^/adm/-) {
14747: $file=~s-^/adm/wrapper/-/-;
14748: $file=~s-^/adm/coursedocs/showdoc/-/-;
14749: }
14750:
14751: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
14752: $location = $file;
14753: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
14754: my ($udom,$uname,$filename)=
14755: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
14756: my $home=&homeserver($uname,$udom);
14757: my $is_me=0;
14758: my @ids=¤t_machine_ids();
14759: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
14760: if ($is_me) {
14761: $location=propath($udom,$uname).'/userfiles/'.$filename;
14762: } else {
14763: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
14764: $udom.'/'.$uname.'/'.$filename;
14765: }
14766: } elsif ($file =~ m-^/adm/-) {
14767: $location = $perlvar{'lonDocRoot'}.'/'.$file;
14768: } else {
14769: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
14770: $file=~s:^/(res|priv)/:/:;
14771: my $space=$1;
14772: if ( !( $file =~ m:^/:) ) {
14773: $location = $dir. '/'.$file;
14774: } else {
14775: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
14776: }
14777: }
14778: $location=~s://+:/:g; # remove duplicate /
14779: while ($location=~m{/\.\./}) {
14780: if ($location =~ m{/[^/]+/\.\./}) {
14781: $location=~ s{/[^/]+/\.\./}{/}g;
14782: } else {
14783: $location=~ s{/\.\./}{/}g;
14784: }
14785: } #remove dir/..
14786: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
14787: return $location;
14788: }
14789:
14790: sub hreflocation {
14791: my ($dir,$file)=@_;
14792: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
14793: $file=filelocation($dir,$file);
14794: } elsif ($file=~m-^/adm/-) {
14795: $file=~s-^/adm/wrapper/-/-;
14796: $file=~s-^/adm/coursedocs/showdoc/-/-;
14797: }
14798: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
14799: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
14800: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
14801: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
14802: {/uploaded/$1/$2/}x;
14803: }
14804: if ($file=~ m{^/userfiles/}) {
14805: $file =~ s{^/userfiles/}{/uploaded/};
14806: }
14807: return $file;
14808: }
14809:
14810:
14811:
14812:
14813:
14814: sub current_machine_domains {
14815: return &machine_domains(&hostname($perlvar{'lonHostID'}));
14816: }
14817:
14818: sub machine_domains {
14819: my ($hostname) = @_;
14820: my @domains;
14821: my %hostname = &all_hostnames();
14822: while( my($id, $name) = each(%hostname)) {
14823: # &logthis("-$id-$name-$hostname-");
14824: if ($hostname eq $name) {
14825: push(@domains,&host_domain($id));
14826: }
14827: }
14828: return @domains;
14829: }
14830:
14831: sub current_machine_ids {
14832: return &machine_ids(&hostname($perlvar{'lonHostID'}));
14833: }
14834:
14835: sub machine_ids {
14836: my ($hostname) = @_;
14837: $hostname ||= &hostname($perlvar{'lonHostID'});
14838: my @ids;
14839: my %name_to_host = &all_names();
14840: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
14841: return @{ $name_to_host{$hostname} };
14842: }
14843: return;
14844: }
14845:
14846: sub additional_machine_domains {
14847: my @domains;
14848: if (-e "$perlvar{'lonTabDir'}/expected_domains.tab") {
14849: if (open(my $fh,"<","$perlvar{'lonTabDir'}/expected_domains.tab")) {
14850: while (my $line = <$fh>) {
14851: chomp($line);
14852: $line =~ s/\s//g;
14853: push(@domains,$line);
14854: }
14855: close($fh);
14856: }
14857: }
14858: return @domains;
14859: }
14860:
14861: sub default_login_domain {
14862: my $domain = $perlvar{'lonDefDomain'};
14863: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
14864: foreach my $posdom (¤t_machine_domains(),
14865: &additional_machine_domains()) {
14866: if (lc($posdom) eq lc($testdomain)) {
14867: $domain=$posdom;
14868: last;
14869: }
14870: }
14871: return $domain;
14872: }
14873:
14874: sub shared_institution {
14875: my ($dom,$lonhost) = @_;
14876: if ($lonhost eq '') {
14877: $lonhost = $perlvar{'lonHostID'};
14878: }
14879: my $same_intdom;
14880: my $hostintdom = &internet_dom($lonhost);
14881: if ($hostintdom ne '') {
14882: my %iphost = &get_iphost();
14883: my $primary_id = &domain($dom,'primary');
14884: my $primary_ip = &get_host_ip($primary_id);
14885: if (ref($iphost{$primary_ip}) eq 'ARRAY') {
14886: foreach my $id (@{$iphost{$primary_ip}}) {
14887: my $intdom = &internet_dom($id);
14888: if ($intdom eq $hostintdom) {
14889: $same_intdom = 1;
14890: last;
14891: }
14892: }
14893: }
14894: }
14895: return $same_intdom;
14896: }
14897:
14898: sub uses_sts {
14899: my ($ignore_cache) = @_;
14900: my $lonhost = $perlvar{'lonHostID'};
14901: my $hostname = &hostname($lonhost);
14902: my $sts_on;
14903: if ($protocol{$lonhost} eq 'https') {
14904: my $cachetime = 12*3600;
14905: if (!$ignore_cache) {
14906: ($sts_on,my $cached)=&is_cached_new('stspolicy',$lonhost);
14907: if (defined($cached)) {
14908: return $sts_on;
14909: }
14910: }
14911: my $url = $protocol{$lonhost}.'://'.$hostname.'/index.html';
14912: my $request=new HTTP::Request('HEAD',$url);
14913: my $response=&LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,'','','',1);
14914: if ($response->is_success) {
14915: my $has_sts = $response->header('Strict-Transport-Security');
14916: if ($has_sts eq '') {
14917: $sts_on = 0;
14918: } else {
14919: if ($has_sts =~ /\Qmax-age=\E(\d+)/) {
14920: my $maxage = $1;
14921: if ($maxage) {
14922: $sts_on = 1;
14923: } else {
14924: $sts_on = 0;
14925: }
14926: } else {
14927: $sts_on = 0;
14928: }
14929: }
14930: return &do_cache_new('stspolicy',$lonhost,$sts_on,$cachetime);
14931: }
14932: }
14933: return;
14934: }
14935:
14936: sub waf_allssl {
14937: my ($host_name) = @_;
14938: my $alias = &get_proxy_alias();
14939: if ($host_name eq '') {
14940: $host_name = $ENV{'SERVER_NAME'};
14941: }
14942: if (($host_name ne '') && ($alias eq $host_name)) {
14943: my $serverhomedom = &host_domain($perlvar{'lonHostID'});
14944: my %defdomdefaults = &get_domain_defaults($serverhomedom);
14945: if ($defdomdefaults{'waf_sslopt'}) {
14946: return $defdomdefaults{'waf_sslopt'};
14947: }
14948: }
14949: return;
14950: }
14951:
14952: sub get_requestor_ip {
14953: my ($r,$nolookup,$noproxy) = @_;
14954: my $from_ip;
14955: if (ref($r)) {
14956: if ($r->can('useragent_ip')) {
14957: if ($noproxy && $r->can('client_ip')) {
14958: $from_ip = $r->client_ip();
14959: } else {
14960: $from_ip = $r->useragent_ip();
14961: }
14962: } elsif ($r->connection->can('remote_ip')) {
14963: $from_ip = $r->connection->remote_ip();
14964: } else {
14965: $from_ip = $r->get_remote_host($nolookup);
14966: }
14967: } else {
14968: $from_ip = $ENV{'REMOTE_ADDR'};
14969: }
14970: return $from_ip if ($noproxy);
14971: # Who controls proxy settings for server
14972: my $dom_in_use = $Apache::lonnet::perlvar{'lonDefDomain'};
14973: my $proxyinfo = &get_proxy_settings($dom_in_use);
14974: if ((ref($proxyinfo) eq 'HASH') && ($from_ip)) {
14975: if ($proxyinfo->{'vpnint'}) {
14976: if (&ip_match($from_ip,$proxyinfo->{'vpnint'})) {
14977: return $from_ip;
14978: }
14979: }
14980: if ($proxyinfo->{'trusted'}) {
14981: if (&ip_match($from_ip,$proxyinfo->{'trusted'})) {
14982: my $ipheader = $proxyinfo->{'ipheader'};
14983: my ($ip,$xfor);
14984: if (ref($r)) {
14985: if ($ipheader) {
14986: $ip = $r->headers_in->{$ipheader};
14987: }
14988: $xfor = $r->headers_in->{'X-Forwarded-For'};
14989: } else {
14990: if ($ipheader) {
14991: $ip = $ENV{'HTTP_'.uc($ipheader)};
14992: }
14993: $xfor = $ENV{'HTTP_X_FORWARDED_FOR'};
14994: }
14995: if (($ip eq '') && ($xfor ne '')) {
14996: foreach my $poss_ip (reverse(split(/\s*,\s*/,$xfor))) {
14997: unless (&ip_match($poss_ip,$proxyinfo->{'trusted'})) {
14998: $ip = $poss_ip;
14999: last;
15000: }
15001: }
15002: }
15003: if ($ip ne '') {
15004: return $ip;
15005: }
15006: }
15007: }
15008: }
15009: return $from_ip;
15010: }
15011:
15012: sub get_proxy_settings {
15013: my ($dom_in_use) = @_;
15014: my %domdefaults = &get_domain_defaults($dom_in_use);
15015: my $proxyinfo = {
15016: ipheader => $domdefaults{'waf_ipheader'},
15017: trusted => $domdefaults{'waf_trusted'},
15018: vpnint => $domdefaults{'waf_vpnint'},
15019: vpnext => $domdefaults{'waf_vpnext'},
15020: sslopt => $domdefaults{'waf_sslopt'},
15021: };
15022: return $proxyinfo;
15023: }
15024:
15025: sub ip_match {
15026: my ($ip,$pattern_str) = @_;
15027: $ip=Net::CIDR::cidrvalidate($ip);
15028: if ($ip) {
15029: return Net::CIDR::cidrlookup($ip,split(/\s*,\s*/,$pattern_str));
15030: }
15031: return;
15032: }
15033:
15034: sub get_proxy_alias {
15035: my ($lonid) = @_;
15036: if ($lonid eq '') {
15037: $lonid = $perlvar{'lonHostID'};
15038: }
15039: if (!defined(&hostname($lonid))) {
15040: return;
15041: }
15042: if ($lonid ne '') {
15043: my ($alias,$cached) = &is_cached_new('proxyalias',$lonid);
15044: if ($cached) {
15045: return $alias;
15046: }
15047: my $dom = &host_domain($lonid);
15048: if ($dom ne '') {
15049: my $cachetime = 60*60*24;
15050: my %domconfig =
15051: &get_dom('configuration',['wafproxy'],$dom);
15052: if (ref($domconfig{'wafproxy'}) eq 'HASH') {
15053: if (ref($domconfig{'wafproxy'}{'alias'}) eq 'HASH') {
15054: $alias = $domconfig{'wafproxy'}{'alias'}{$lonid};
15055: }
15056: }
15057: return &do_cache_new('proxyalias',$lonid,$alias,$cachetime);
15058: }
15059: }
15060: return;
15061: }
15062:
15063: sub use_proxy_alias {
15064: my ($r,$lonid) = @_;
15065: my $alias = &get_proxy_alias($lonid);
15066: if ($alias) {
15067: my $dom = &host_domain($lonid);
15068: if ($dom ne '') {
15069: my $proxyinfo = &get_proxy_settings($dom);
15070: my ($vpnint,$remote_ip);
15071: if (ref($proxyinfo) eq 'HASH') {
15072: $vpnint = $proxyinfo->{'vpnint'};
15073: if ($vpnint) {
15074: $remote_ip = &get_requestor_ip($r,1,1);
15075: }
15076: }
15077: unless ($vpnint && &ip_match($remote_ip,$vpnint)) {
15078: return $alias;
15079: }
15080: }
15081: }
15082: return;
15083: }
15084:
15085: sub alias_sso {
15086: my ($lonid) = @_;
15087: if ($lonid eq '') {
15088: $lonid = $perlvar{'lonHostID'};
15089: }
15090: if (!defined(&hostname($lonid))) {
15091: return;
15092: }
15093: if ($lonid ne '') {
15094: my ($use_alias,$cached) = &is_cached_new('proxysaml',$lonid);
15095: if ($cached) {
15096: return $use_alias;
15097: }
15098: my $dom = &host_domain($lonid);
15099: if ($dom ne '') {
15100: my $cachetime = 60*60*24;
15101: my %domconfig =
15102: &get_dom('configuration',['wafproxy'],$dom);
15103: if (ref($domconfig{'wafproxy'}) eq 'HASH') {
15104: if (ref($domconfig{'wafproxy'}{'saml'}) eq 'HASH') {
15105: $use_alias = $domconfig{'wafproxy'}{'saml'}{$lonid};
15106: }
15107: }
15108: return &do_cache_new('proxysaml',$lonid,$use_alias,$cachetime);
15109: }
15110: }
15111: return;
15112: }
15113:
15114: sub get_saml_landing {
15115: my ($lonid) = @_;
15116: if ($lonid eq '') {
15117: my $defdom = &default_login_domain();
15118: my @hosts = ¤t_machine_ids();
15119: if (@hosts > 1) {
15120: foreach my $hostid (@hosts) {
15121: if (&host_domain($hostid) eq $defdom) {
15122: $lonid = $hostid;
15123: last;
15124: }
15125: }
15126: } else {
15127: $lonid = $perlvar{'lonHostID'};
15128: }
15129: if ($lonid) {
15130: unless (&host_domain($lonid) eq $defdom) {
15131: return;
15132: }
15133: } else {
15134: return;
15135: }
15136: } elsif (!defined(&hostname($lonid))) {
15137: return;
15138: }
15139: my ($landing,$cached) = &is_cached_new('samllanding',$lonid);
15140: if ($cached) {
15141: return $landing;
15142: }
15143: my $dom = &host_domain($lonid);
15144: if ($dom ne '') {
15145: my $cachetime = 60*60*24;
15146: my %domconfig =
15147: &get_dom('configuration',['login'],$dom);
15148: if (ref($domconfig{'login'}) eq 'HASH') {
15149: if (ref($domconfig{'login'}{'saml'}) eq 'HASH') {
15150: if (ref($domconfig{'login'}{'saml'}{$lonid}) eq 'HASH') {
15151: $landing = 1;
15152: }
15153: }
15154: }
15155: return &do_cache_new('samllanding',$lonid,$landing,$cachetime);
15156: }
15157: return;
15158: }
15159:
15160: # ------------------------------------------------------------- Declutters URLs
15161:
15162: sub declutter {
15163: my $thisfn=shift;
15164: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
15165: unless ($thisfn=~m{^/home/httpd/html/priv/}) {
15166: $thisfn=~s{^/home/httpd/html}{};
15167: }
15168: $thisfn=~s/^\///;
15169: $thisfn=~s|^adm/wrapper/||;
15170: $thisfn=~s|^adm/coursedocs/showdoc/||;
15171: $thisfn=~s/^res\///;
15172: $thisfn=~s/^priv\///;
15173: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
15174: $thisfn=~s/\?.+$//;
15175: }
15176: return $thisfn;
15177: }
15178:
15179: # ------------------------------------------------------------- Clutter up URLs
15180:
15181: sub clutter {
15182: my $thisfn='/'.&declutter(shift);
15183: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
15184: || $thisfn =~ m{^/adm/(includes|pages)} ) {
15185: $thisfn='/res'.$thisfn;
15186: }
15187: if ($thisfn !~m|^/adm|) {
15188: if ($thisfn =~ m|^/ext/|) {
15189: $thisfn='/adm/wrapper'.$thisfn;
15190: } else {
15191: my ($ext) = ($thisfn =~ /\.(\w+)$/);
15192: my $embstyle=&Apache::loncommon::fileembstyle($ext);
15193: if ($embstyle eq 'ssi'
15194: || ($embstyle eq 'hdn')
15195: || ($embstyle eq 'rat')
15196: || ($embstyle eq 'prv')
15197: || ($embstyle eq 'ign')) {
15198: #do nothing with these
15199: } elsif (($embstyle eq 'img')
15200: || ($embstyle eq 'emb')
15201: || ($embstyle eq 'wrp')) {
15202: $thisfn='/adm/wrapper'.$thisfn;
15203: } elsif ($embstyle eq 'unk'
15204: && $thisfn!~/\.(sequence|page)$/) {
15205: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
15206: } else {
15207: # &logthis("Got a blank emb style");
15208: }
15209: }
15210: } elsif ($thisfn =~ m{^/adm/$match_domain/$match_courseid/\d+/ext\.tool$}) {
15211: $thisfn='/adm/wrapper'.$thisfn;
15212: }
15213: return $thisfn;
15214: }
15215:
15216: sub clutter_with_no_wrapper {
15217: my $uri = &clutter(shift);
15218: if ($uri =~ m-^/adm/-) {
15219: $uri =~ s-^/adm/wrapper/-/-;
15220: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
15221: }
15222: return $uri;
15223: }
15224:
15225: sub freeze_escape {
15226: my ($value)=@_;
15227: if (ref($value)) {
15228: $value=&nfreeze($value);
15229: return '__FROZEN__'.&escape($value);
15230: }
15231: return &escape($value);
15232: }
15233:
15234:
15235: sub thaw_unescape {
15236: my ($value)=@_;
15237: if ($value =~ /^__FROZEN__/) {
15238: substr($value,0,10,undef);
15239: $value=&unescape($value);
15240: return &thaw($value);
15241: }
15242: return &unescape($value);
15243: }
15244:
15245: sub correct_line_ends {
15246: my ($result)=@_;
15247: $$result =~s/\r\n/\n/mg;
15248: $$result =~s/\r/\n/mg;
15249: }
15250: # ================================================================ Main Program
15251:
15252: sub goodbye {
15253: &logthis("Starting Shut down");
15254: #not converted to using infrastruture and probably shouldn't be
15255: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
15256: #converted
15257: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
15258: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
15259: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
15260: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
15261: #1.1 only
15262: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
15263: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
15264: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
15265: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
15266: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
15267: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
15268: &logthis(sprintf("%-20s is %s",'hits',$hits));
15269: &flushcourselogs();
15270: &logthis("Shutting down");
15271: }
15272:
15273: sub get_dns {
15274: my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
15275: if (!$ignore_cache) {
15276: my ($content,$cached)=
15277: &is_cached_new('dns',$url);
15278: if ($cached) {
15279: &$func($content,$hashref);
15280: return;
15281: }
15282: }
15283:
15284: my %alldns;
15285: if (open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab")) {
15286: foreach my $dns (<$config>) {
15287: next if ($dns !~ /^\^(\S*)/x);
15288: my $line = $1;
15289: my ($host,$protocol) = split(/:/,$line);
15290: if ($protocol ne 'https') {
15291: $protocol = 'http';
15292: }
15293: $alldns{$host} = $protocol;
15294: }
15295: close($config);
15296: }
15297: while (%alldns) {
15298: my ($dns) = sort { $b cmp $a } keys(%alldns);
15299: my ($contents,@content);
15300: if ($dns eq Sys::Hostname::FQDN::fqdn()) {
15301: my $command = (split('/',$url))[3];
15302: my ($dir,$file) = &parse_getdns_url($command,$url);
15303: delete($alldns{$dns});
15304: next if (($dir eq '') || ($file eq ''));
15305: if (open(my $config,'<',"$dir/$file")) {
15306: @content = <$config>;
15307: close($config);
15308: }
15309: if ($url eq '/adm/dns/loncapaCRL') {
15310: $contents = join('',@content);
15311: }
15312: } else {
15313: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
15314: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar,30,0);
15315: delete($alldns{$dns});
15316: next if ($response->is_error());
15317: if ($url eq '/adm/dns/loncapaCRL') {
15318: $contents = $response->content;
15319: } else {
15320: @content = split("\n",$response->content);
15321: }
15322: }
15323: if ($url eq '/adm/dns/loncapaCRL') {
15324: return &$func($contents);
15325: } else {
15326: unless ($nocache) {
15327: &do_cache_new('dns',$url,\@content,30*24*60*60);
15328: }
15329: &$func(\@content,$hashref);
15330: return;
15331: }
15332: }
15333: my $which = (split('/',$url,4))[3];
15334: if ($which eq 'loncapaCRL') {
15335: my $diskfile = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
15336: if (-e $diskfile) {
15337: &logthis("unable to contact DNS, on disk file $diskfile not updated");
15338: } else {
15339: &logthis("unable to contact DNS, no on disk file $diskfile available");
15340: }
15341: } else {
15342: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
15343: if (open(my $config,"<","$perlvar{'lonTabDir'}/dns_$which.tab")) {
15344: my @content = <$config>;
15345: close($config);
15346: &$func(\@content,$hashref);
15347: }
15348: }
15349: return;
15350: }
15351:
15352: # ------------------------------------------------------Get DNS checksums file
15353: sub parse_dns_checksums_tab {
15354: my ($lines,$hashref) = @_;
15355: my $lonhost = $perlvar{'lonHostID'};
15356: my $machine_dom = &host_domain($lonhost);
15357: my $loncaparev = &get_server_loncaparev($machine_dom);
15358: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
15359: my $webconfdir = '/etc/httpd/conf';
15360: if ($distro =~ /^(ubuntu|debian)(\d+)$/) {
15361: $webconfdir = '/etc/apache2';
15362: } elsif ($distro =~ /^sles(\d+)$/) {
15363: if ($1 >= 10) {
15364: $webconfdir = '/etc/apache2';
15365: }
15366: } elsif ($distro =~ /^suse(\d+\.\d+)$/) {
15367: if ($1 >= 10.0) {
15368: $webconfdir = '/etc/apache2';
15369: }
15370: }
15371: my ($release,$timestamp) = split(/\-/,$loncaparev);
15372: my (%chksum,%revnum);
15373: if (ref($lines) eq 'ARRAY') {
15374: chomp(@{$lines});
15375: my $version = shift(@{$lines});
15376: if ($version eq $release) {
15377: foreach my $line (@{$lines}) {
15378: my ($file,$version,$shasum) = split(/,/,$line);
15379: if ($file =~ m{^/etc/httpd/conf}) {
15380: if ($webconfdir eq '/etc/apache2') {
15381: $file =~ s{^\Q/etc/httpd/conf/\E}{$webconfdir/};
15382: }
15383: }
15384: $chksum{$file} = $shasum;
15385: $revnum{$file} = $version;
15386: }
15387: if (ref($hashref) eq 'HASH') {
15388: %{$hashref} = (
15389: sums => \%chksum,
15390: versions => \%revnum,
15391: );
15392: }
15393: }
15394: }
15395: return;
15396: }
15397:
15398: sub fetch_dns_checksums {
15399: my %checksums;
15400: my $machine_dom = &host_domain($perlvar{'lonHostID'});
15401: my $loncaparev = &get_server_loncaparev($machine_dom,$perlvar{'lonHostID'});
15402: my ($release,$timestamp) = split(/\-/,$loncaparev);
15403: &get_dns("/adm/dns/checksums/$release",\&parse_dns_checksums_tab,1,1,
15404: \%checksums);
15405: return \%checksums;
15406: }
15407:
15408: sub fetch_crl_pemfile {
15409: return &get_dns("/adm/dns/loncapaCRL",\&save_crl_pem,1,1);
15410: }
15411:
15412: sub save_crl_pem {
15413: my ($content) = @_;
15414: my ($msg,$hadchanges);
15415: if ($content ne '') {
15416: my $now = time;
15417: my $lonca = $perlvar{'lonCertificateDirectory'}.'/'.$perlvar{'lonnetCertificateAuthority'};
15418: my $tmpcrl = $tmpdir.'/'.$perlvar{'lonnetCertRevocationList'}.'_'.$now.'.'.$$.'.tmp';
15419: if (open(my $fh,'>',"$tmpcrl")) {
15420: print $fh $content;
15421: close($fh);
15422: if (-e $lonca) {
15423: if (open(PIPE,"openssl crl -in $tmpcrl -inform pem -CAfile $lonca -noout 2>&1 |")) {
15424: my $check = <PIPE>;
15425: close(PIPE);
15426: chomp($check);
15427: if ($check eq 'verify OK') {
15428: my $dest = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
15429: my $backup;
15430: if (-e $dest) {
15431: if (&File::Copy::move($dest,"$dest.bak")) {
15432: $backup = 'ok';
15433: }
15434: }
15435: if (&File::Copy::move($tmpcrl,$dest)) {
15436: $msg = 'ok';
15437: if ($backup) {
15438: my (%oldnums,%newnums);
15439: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest.bak |grep 'Serial Number' |")) {
15440: while (<PIPE>) {
15441: $oldnums{(split(/:/))[1]} = 1;
15442: }
15443: close(PIPE);
15444: }
15445: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest |grep 'Serial Number' |")) {
15446: while(<PIPE>) {
15447: $newnums{(split(/:/))[1]} = 1;
15448: }
15449: close(PIPE);
15450: }
15451: foreach my $key (sort {$b <=> $a } (keys(%newnums))) {
15452: unless (exists($oldnums{$key})) {
15453: $hadchanges = 1;
15454: last;
15455: }
15456: }
15457: unless ($hadchanges) {
15458: foreach my $key (sort {$b <=> $a } (keys(%oldnums))) {
15459: unless (exists($newnums{$key})) {
15460: $hadchanges = 1;
15461: last;
15462: }
15463: }
15464: }
15465: }
15466: }
15467: } else {
15468: unlink($tmpcrl);
15469: }
15470: } else {
15471: unlink($tmpcrl);
15472: }
15473: } else {
15474: unlink($tmpcrl);
15475: }
15476: }
15477: }
15478: return ($msg,$hadchanges);
15479: }
15480:
15481: sub parse_getdns_url {
15482: my ($command,$url) = @_;
15483: my $dir = $perlvar{'lonTabDir'};
15484: my $file;
15485: if ($command eq 'hosts') {
15486: $file = 'dns_hosts.tab';
15487: } elsif ($command eq 'domain') {
15488: $file = 'dns_domain.tab';
15489: } elsif ($command eq 'checksums') {
15490: my $version = (split('/',$url))[4];
15491: $file = "dns_checksums/$version.tab",
15492: } elsif ($command eq 'loncapaCRL') {
15493: $dir = $perlvar{'lonCertificateDirectory'};
15494: $file = $perlvar{'lonnetCertRevocationList'};
15495: }
15496: return ($dir,$file);
15497: }
15498:
15499: # ------------------------------------------------------------ Read domain file
15500: {
15501: my $loaded;
15502: my %domain;
15503:
15504: sub parse_domain_tab {
15505: my ($lines) = @_;
15506: foreach my $line (@$lines) {
15507: next if ($line =~ /^(\#|\s*$ )/x);
15508:
15509: chomp($line);
15510: my ($name,@elements) = split(/:/,$line,9);
15511: my %this_domain;
15512: foreach my $field ('description', 'auth_def', 'auth_arg_def',
15513: 'lang_def', 'city', 'longi', 'lati',
15514: 'primary') {
15515: $this_domain{$field} = shift(@elements);
15516: }
15517: $domain{$name} = \%this_domain;
15518: }
15519: }
15520:
15521: sub reset_domain_info {
15522: undef($loaded);
15523: undef(%domain);
15524: }
15525:
15526: sub load_domain_tab {
15527: my ($ignore_cache,$nocache) = @_;
15528: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache,$nocache);
15529: my $fh;
15530: if (open($fh,"<",$perlvar{'lonTabDir'}.'/domain.tab')) {
15531: my @lines = <$fh>;
15532: &parse_domain_tab(\@lines);
15533: }
15534: close($fh);
15535: $loaded = 1;
15536: }
15537:
15538: sub domain {
15539: &load_domain_tab() if (!$loaded);
15540:
15541: my ($name,$what) = @_;
15542: return if ( !exists($domain{$name}) );
15543:
15544: if (!$what) {
15545: return $domain{$name}{'description'};
15546: }
15547: return $domain{$name}{$what};
15548: }
15549:
15550: sub domain_info {
15551: &load_domain_tab() if (!$loaded);
15552: return %domain;
15553: }
15554:
15555: }
15556:
15557:
15558: # ------------------------------------------------------------- Read hosts file
15559: {
15560: my %hostname;
15561: my %hostdom;
15562: my %libserv;
15563: my $loaded;
15564: my %name_to_host;
15565: my %internetdom;
15566: my %LC_dns_serv;
15567:
15568: sub parse_hosts_tab {
15569: my ($file) = @_;
15570: foreach my $configline (@$file) {
15571: next if ($configline =~ /^(\#|\s*$ )/x);
15572: chomp($configline);
15573: if ($configline =~ /^\^/) {
15574: if ($configline =~ /^\^([\w.\-]+)/) {
15575: $LC_dns_serv{$1} = 1;
15576: }
15577: next;
15578: }
15579: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
15580: $name=~s/\s//g;
15581: if ($id && $domain && $role && $name) {
15582: if ((exists($hostname{$id})) && ($hostname{$id} ne '')) {
15583: my $curr = $hostname{$id};
15584: my $skip;
15585: if (ref($name_to_host{$curr}) eq 'ARRAY') {
15586: if (($curr eq $name) && (@{$name_to_host{$curr}} == 1)) {
15587: $skip = 1;
15588: } else {
15589: @{$name_to_host{$curr}} = grep { $_ ne $id } @{$name_to_host{$curr}};
15590: }
15591: }
15592: unless ($skip) {
15593: push(@{$name_to_host{$name}},$id);
15594: }
15595: } else {
15596: push(@{$name_to_host{$name}},$id);
15597: }
15598: $hostname{$id}=$name;
15599: $hostdom{$id}=$domain;
15600: if ($role eq 'library') { $libserv{$id}=$name; }
15601: if (defined($protocol)) {
15602: if ($protocol eq 'https') {
15603: $protocol{$id} = $protocol;
15604: } else {
15605: $protocol{$id} = 'http';
15606: }
15607: } else {
15608: $protocol{$id} = 'http';
15609: }
15610: if (defined($intdom)) {
15611: $internetdom{$id} = $intdom;
15612: }
15613: }
15614: }
15615: }
15616:
15617: sub reset_hosts_info {
15618: &purge_remembered();
15619: &reset_domain_info();
15620: &reset_hosts_ip_info();
15621: undef(%internetdom);
15622: undef(%name_to_host);
15623: undef(%hostname);
15624: undef(%hostdom);
15625: undef(%libserv);
15626: undef($loaded);
15627: }
15628:
15629: sub load_hosts_tab {
15630: my ($ignore_cache,$nocache) = @_;
15631: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache,$nocache);
15632: open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab");
15633: my @config = <$config>;
15634: &parse_hosts_tab(\@config);
15635: close($config);
15636: $loaded=1;
15637: }
15638:
15639: sub hostname {
15640: &load_hosts_tab() if (!$loaded);
15641:
15642: my ($lonid) = @_;
15643: return $hostname{$lonid};
15644: }
15645:
15646: sub all_hostnames {
15647: &load_hosts_tab() if (!$loaded);
15648:
15649: return %hostname;
15650: }
15651:
15652: sub all_names {
15653: my ($ignore_cache,$nocache) = @_;
15654: &load_hosts_tab($ignore_cache,$nocache) if (!$loaded);
15655:
15656: return %name_to_host;
15657: }
15658:
15659: sub all_host_domain {
15660: &load_hosts_tab() if (!$loaded);
15661: return %hostdom;
15662: }
15663:
15664: sub all_host_intdom {
15665: &load_hosts_tab() if (!$loaded);
15666: return %internetdom;
15667: }
15668:
15669: sub is_library {
15670: &load_hosts_tab() if (!$loaded);
15671:
15672: return exists($libserv{$_[0]});
15673: }
15674:
15675: sub all_library {
15676: &load_hosts_tab() if (!$loaded);
15677:
15678: return %libserv;
15679: }
15680:
15681: sub unique_library {
15682: #2x reverse removes all hostnames that appear more than once
15683: my %unique = reverse &all_library();
15684: return reverse %unique;
15685: }
15686:
15687: sub get_servers {
15688: &load_hosts_tab() if (!$loaded);
15689:
15690: my ($domain,$type) = @_;
15691: my %possible_hosts = ($type eq 'library') ? %libserv
15692: : %hostname;
15693: my %result;
15694: if (ref($domain) eq 'ARRAY') {
15695: while ( my ($host,$hostname) = each(%possible_hosts)) {
15696: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
15697: $result{$host} = $hostname;
15698: }
15699: }
15700: } else {
15701: while ( my ($host,$hostname) = each(%possible_hosts)) {
15702: if ($hostdom{$host} eq $domain) {
15703: $result{$host} = $hostname;
15704: }
15705: }
15706: }
15707: return %result;
15708: }
15709:
15710: sub get_unique_servers {
15711: my %unique = reverse &get_servers(@_);
15712: return reverse %unique;
15713: }
15714:
15715: sub host_domain {
15716: &load_hosts_tab() if (!$loaded);
15717:
15718: my ($lonid) = @_;
15719: return $hostdom{$lonid};
15720: }
15721:
15722: sub all_domains {
15723: &load_hosts_tab() if (!$loaded);
15724:
15725: my %seen;
15726: my @uniq = grep(!$seen{$_}++, values(%hostdom));
15727: return @uniq;
15728: }
15729:
15730: sub internet_dom {
15731: &load_hosts_tab() if (!$loaded);
15732:
15733: my ($lonid) = @_;
15734: return $internetdom{$lonid};
15735: }
15736:
15737: sub is_LC_dns {
15738: &load_hosts_tab() if (!$loaded);
15739:
15740: my ($hostname) = @_;
15741: return exists($LC_dns_serv{$hostname});
15742: }
15743:
15744: }
15745:
15746: {
15747: my %iphost;
15748: my %name_to_ip;
15749: my %lonid_to_ip;
15750:
15751: sub get_hosts_from_ip {
15752: my ($ip) = @_;
15753: my %iphosts = &get_iphost();
15754: if (ref($iphosts{$ip})) {
15755: return @{$iphosts{$ip}};
15756: }
15757: return;
15758: }
15759:
15760: sub reset_hosts_ip_info {
15761: undef(%iphost);
15762: undef(%name_to_ip);
15763: undef(%lonid_to_ip);
15764: }
15765:
15766: sub get_host_ip {
15767: my ($lonid) = @_;
15768: if (exists($lonid_to_ip{$lonid})) {
15769: return $lonid_to_ip{$lonid};
15770: }
15771: my $name=&hostname($lonid);
15772: my $ip = gethostbyname($name);
15773: return if (!$ip || length($ip) ne 4);
15774: $ip=inet_ntoa($ip);
15775: $name_to_ip{$name} = $ip;
15776: $lonid_to_ip{$lonid} = $ip;
15777: return $ip;
15778: }
15779:
15780: sub get_iphost {
15781: my ($ignore_cache,$nocache) = @_;
15782:
15783: if (!$ignore_cache) {
15784: if (%iphost) {
15785: return %iphost;
15786: }
15787: my ($ip_info,$cached)=
15788: &is_cached_new('iphost','iphost');
15789: if ($cached) {
15790: %iphost = %{$ip_info->[0]};
15791: %name_to_ip = %{$ip_info->[1]};
15792: %lonid_to_ip = %{$ip_info->[2]};
15793: return %iphost;
15794: }
15795: }
15796:
15797: # get yesterday's info for fallback
15798: my %old_name_to_ip;
15799: my ($ip_info,$cached)=
15800: &is_cached_new('iphost','iphost');
15801: if ($cached) {
15802: %old_name_to_ip = %{$ip_info->[1]};
15803: }
15804:
15805: my %name_to_host = &all_names($ignore_cache,$nocache);
15806: foreach my $name (keys(%name_to_host)) {
15807: my $ip;
15808: if (!exists($name_to_ip{$name})) {
15809: $ip = gethostbyname($name);
15810: if (!$ip || length($ip) ne 4) {
15811: if (defined($old_name_to_ip{$name})) {
15812: $ip = $old_name_to_ip{$name};
15813: &logthis("Can't find $name defaulting to old $ip");
15814: } else {
15815: &logthis("Name $name no IP found");
15816: next;
15817: }
15818: } else {
15819: $ip=inet_ntoa($ip);
15820: }
15821: $name_to_ip{$name} = $ip;
15822: } else {
15823: $ip = $name_to_ip{$name};
15824: }
15825: foreach my $id (@{ $name_to_host{$name} }) {
15826: $lonid_to_ip{$id} = $ip;
15827: }
15828: push(@{$iphost{$ip}},@{$name_to_host{$name}});
15829: }
15830: unless ($nocache) {
15831: &do_cache_new('iphost','iphost',
15832: [\%iphost,\%name_to_ip,\%lonid_to_ip],
15833: 48*60*60);
15834: }
15835:
15836: return %iphost;
15837: }
15838:
15839: #
15840: # Given a DNS returns the loncapa host name for that DNS
15841: #
15842: sub host_from_dns {
15843: my ($dns) = @_;
15844: my @hosts;
15845: my $ip;
15846:
15847: if (exists($name_to_ip{$dns})) {
15848: $ip = $name_to_ip{$dns};
15849: }
15850: if (!$ip) {
15851: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
15852: if (length($ip) == 4) {
15853: $ip = &IO::Socket::inet_ntoa($ip);
15854: }
15855: }
15856: if ($ip) {
15857: @hosts = get_hosts_from_ip($ip);
15858: return $hosts[0];
15859: }
15860: return undef;
15861: }
15862:
15863: sub get_internet_names {
15864: my ($lonid) = @_;
15865: return if ($lonid eq '');
15866: my ($idnref,$cached)=
15867: &is_cached_new('internetnames',$lonid);
15868: if ($cached) {
15869: return $idnref;
15870: }
15871: my $ip = &get_host_ip($lonid);
15872: my @hosts = &get_hosts_from_ip($ip);
15873: my %iphost = &get_iphost();
15874: my (@idns,%seen);
15875: foreach my $id (@hosts) {
15876: my $dom = &host_domain($id);
15877: my $prim_id = &domain($dom,'primary');
15878: my $prim_ip = &get_host_ip($prim_id);
15879: next if ($seen{$prim_ip});
15880: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
15881: foreach my $id (@{$iphost{$prim_ip}}) {
15882: my $intdom = &internet_dom($id);
15883: unless (grep(/^\Q$intdom\E$/,@idns)) {
15884: push(@idns,$intdom);
15885: }
15886: }
15887: }
15888: $seen{$prim_ip} = 1;
15889: }
15890: return &do_cache_new('internetnames',$lonid,\@idns,12*60*60);
15891: }
15892:
15893: }
15894:
15895: sub all_loncaparevs {
15896: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11);
15897: }
15898:
15899: # ---------------------------------------------------------- Read loncaparev table
15900: {
15901: sub load_loncaparevs {
15902: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
15903: if (open(my $config,"<","$perlvar{'lonTabDir'}/loncaparevs.tab")) {
15904: while (my $configline=<$config>) {
15905: chomp($configline);
15906: my ($hostid,$loncaparev)=split(/:/,$configline);
15907: $loncaparevs{$hostid}=$loncaparev;
15908: }
15909: close($config);
15910: }
15911: }
15912: }
15913: }
15914:
15915: # ---------------------------------------------------------- Read serverhostID table
15916: {
15917: sub load_serverhomeIDs {
15918: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
15919: if (open(my $config,"<","$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
15920: while (my $configline=<$config>) {
15921: chomp($configline);
15922: my ($name,$id)=split(/:/,$configline);
15923: $serverhomeIDs{$name}=$id;
15924: }
15925: close($config);
15926: }
15927: }
15928: }
15929: }
15930:
15931:
15932: BEGIN {
15933:
15934: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
15935: unless ($readit) {
15936: {
15937: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
15938: %perlvar = (%perlvar,%{$configvars});
15939: }
15940:
15941:
15942: # ------------------------------------------------------ Read spare server file
15943: {
15944: open(my $config,"<","$perlvar{'lonTabDir'}/spare.tab");
15945:
15946: while (my $configline=<$config>) {
15947: chomp($configline);
15948: if ($configline) {
15949: my ($host,$type) = split(':',$configline,2);
15950: if (!defined($type) || $type eq '') { $type = 'default' };
15951: push(@{ $spareid{$type} }, $host);
15952: }
15953: }
15954: close($config);
15955: }
15956: # ------------------------------------------------------------ Read permissions
15957: {
15958: open(my $config,"<","$perlvar{'lonTabDir'}/roles.tab");
15959:
15960: while (my $configline=<$config>) {
15961: chomp($configline);
15962: if ($configline) {
15963: my ($role,$perm)=split(/ /,$configline);
15964: if ($perm ne '') { $pr{$role}=$perm; }
15965: }
15966: }
15967: close($config);
15968: }
15969:
15970: # -------------------------------------------- Read plain texts for permissions
15971: {
15972: open(my $config,"<","$perlvar{'lonTabDir'}/rolesplain.tab");
15973:
15974: while (my $configline=<$config>) {
15975: chomp($configline);
15976: if ($configline) {
15977: my ($short,@plain)=split(/:/,$configline);
15978: %{$prp{$short}} = ();
15979: if (@plain > 0) {
15980: $prp{$short}{'std'} = $plain[0];
15981: for (my $i=1; $i<@plain; $i++) {
15982: $prp{$short}{'alt'.$i} = $plain[$i];
15983: }
15984: }
15985: }
15986: }
15987: close($config);
15988: }
15989:
15990: # ---------------------------------------------------------- Read package table
15991: {
15992: open(my $config,"<","$perlvar{'lonTabDir'}/packages.tab");
15993:
15994: while (my $configline=<$config>) {
15995: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
15996: chomp($configline);
15997: my ($short,$plain)=split(/:/,$configline);
15998: my ($pack,$name)=split(/\&/,$short);
15999: if ($plain ne '') {
16000: $packagetab{$pack.'&'.$name.'&name'}=$name;
16001: $packagetab{$short}=$plain;
16002: }
16003: }
16004: close($config);
16005: }
16006:
16007: # ---------------------------------------------------------- Read loncaparev table
16008:
16009: &load_loncaparevs();
16010:
16011: # ---------------------------------------------------------- Read serverhostID table
16012:
16013: &load_serverhomeIDs();
16014:
16015: # ---------------------------------------------------------- Read releaseslist XML
16016: {
16017: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
16018: if (-e $file) {
16019: my $parser = HTML::LCParser->new($file);
16020: while (my $token = $parser->get_token()) {
16021: if ($token->[0] eq 'S') {
16022: my $item = $token->[1];
16023: my $name = $token->[2]{'name'};
16024: my $value = $token->[2]{'value'};
16025: my $valuematch = $token->[2]{'valuematch'};
16026: my $namematch = $token->[2]{'namematch'};
16027: if ($item eq 'parameter') {
16028: if (($namematch ne '') || (($name ne '') && ($value ne '' || $valuematch ne ''))) {
16029: my $release = $parser->get_text();
16030: $release =~ s/(^\s*|\s*$ )//gx;
16031: $needsrelease{$item.':'.$name.':'.$value.':'.$valuematch.':'.$namematch} = $release;
16032: }
16033: } elsif ($item ne '' && $name ne '') {
16034: my $release = $parser->get_text();
16035: $release =~ s/(^\s*|\s*$ )//gx;
16036: $needsrelease{$item.':'.$name.':'.$value} = $release;
16037: }
16038: }
16039: }
16040: }
16041: }
16042:
16043: # ---------------------------------------------------------- Read managers table
16044: {
16045: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
16046: if (open(my $config,"<","$perlvar{'lonTabDir'}/managers.tab")) {
16047: while (my $configline=<$config>) {
16048: chomp($configline);
16049: next if ($configline =~ /^\#/);
16050: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
16051: $managerstab{$configline} = 1;
16052: }
16053: }
16054: close($config);
16055: }
16056: }
16057: }
16058:
16059: # ------------- set up temporary directory
16060: {
16061: $tmpdir = LONCAPA::tempdir();
16062:
16063: }
16064:
16065: # ------------- set default texengine (domain default overrides this)
16066: {
16067: $deftex = LONCAPA::texengine();
16068: }
16069:
16070: # ------------- set default minimum length for passwords for internal auth users
16071: {
16072: $passwdmin = LONCAPA::passwd_min();
16073: }
16074:
16075: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
16076: 'compress_threshold'=> 20_000,
16077: });
16078:
16079: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
16080: $dumpcount=0;
16081: $locknum=0;
16082:
16083: &logtouch();
16084: &logthis('<font color="yellow">INFO: Read configuration</font>');
16085: $readit=1;
16086: {
16087: use integer;
16088: my $test=(2**32)+1;
16089: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
16090: &logthis(" Detected 64bit platform ($_64bit)");
16091: }
16092: }
16093: }
16094:
16095: 1;
16096: __END__
16097:
16098: =pod
16099:
16100: =head1 NAME
16101:
16102: Apache::lonnet - Subroutines to ask questions about things in the network.
16103:
16104: =head1 SYNOPSIS
16105:
16106: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
16107:
16108: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
16109:
16110: Common parameters:
16111:
16112: =over 4
16113:
16114: =item *
16115:
16116: $uname : an internal username (if $cname expecting a course Id specifically)
16117:
16118: =item *
16119:
16120: $udom : a domain (if $cdom expecting a course's domain specifically)
16121:
16122: =item *
16123:
16124: $symb : a resource instance identifier
16125:
16126: =item *
16127:
16128: $namespace : the name of a .db file that contains the data needed or
16129: being set.
16130:
16131: =back
16132:
16133: =head1 OVERVIEW
16134:
16135: lonnet provides subroutines which interact with the
16136: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
16137: about classes, users, and resources.
16138:
16139: For many of these objects you can also use this to store data about
16140: them or modify them in various ways.
16141:
16142: =head2 Symbs
16143:
16144: To identify a specific instance of a resource, LON-CAPA uses symbols
16145: or "symbs"X<symb>. These identifiers are built from the URL of the
16146: map, the resource number of the resource in the map, and the URL of
16147: the resource itself. The latter is somewhat redundant, but might help
16148: if maps change.
16149:
16150: An example is
16151:
16152: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
16153:
16154: The respective map entry is
16155:
16156: <resource id="19" src="/res/msu/korte/tests/part12.problem"
16157: title="Problem 2">
16158: </resource>
16159:
16160: Symbs are used by the random number generator, as well as to store and
16161: restore data specific to a certain instance of for example a problem.
16162:
16163: =head2 Storing And Retrieving Data
16164:
16165: X<store()>X<cstore()>X<restore()>Three of the most important functions
16166: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
16167: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
16168: is is the non-critical message twin of cstore. These functions are for
16169: handlers to store a perl hash to a user's permanent data space in an
16170: easy manner, and to retrieve it again on another call. It is expected
16171: that a handler would use this once at the beginning to retrieve data,
16172: and then again once at the end to send only the new data back.
16173:
16174: The data is stored in the user's data directory on the user's
16175: homeserver under the ID of the course.
16176:
16177: The hash that is returned by restore will have all of the previous
16178: value for all of the elements of the hash.
16179:
16180: Example:
16181:
16182: #creating a hash
16183: my %hash;
16184: $hash{'foo'}='bar';
16185:
16186: #storing it
16187: &Apache::lonnet::cstore(\%hash);
16188:
16189: #changing a value
16190: $hash{'foo'}='notbar';
16191:
16192: #adding a new value
16193: $hash{'bar'}='foo';
16194: &Apache::lonnet::cstore(\%hash);
16195:
16196: #retrieving the hash
16197: my %history=&Apache::lonnet::restore();
16198:
16199: #print the hash
16200: foreach my $key (sort(keys(%history))) {
16201: print("\%history{$key} = $history{$key}");
16202: }
16203:
16204: Will print out:
16205:
16206: %history{1:foo} = bar
16207: %history{1:keys} = foo:timestamp
16208: %history{1:timestamp} = 990455579
16209: %history{2:bar} = foo
16210: %history{2:foo} = notbar
16211: %history{2:keys} = foo:bar:timestamp
16212: %history{2:timestamp} = 990455580
16213: %history{bar} = foo
16214: %history{foo} = notbar
16215: %history{timestamp} = 990455580
16216: %history{version} = 2
16217:
16218: Note that the special hash entries C<keys>, C<version> and
16219: C<timestamp> were added to the hash. C<version> will be equal to the
16220: total number of versions of the data that have been stored. The
16221: C<timestamp> attribute will be the UNIX time the hash was
16222: stored. C<keys> is available in every historical section to list which
16223: keys were added or changed at a specific historical revision of a
16224: hash.
16225:
16226: B<Warning>: do not store the hash that restore returns directly. This
16227: will cause a mess since it will restore the historical keys as if the
16228: were new keys. I.E. 1:foo will become 1:1:foo etc.
16229:
16230: Calling convention:
16231:
16232: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
16233: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$laststore);
16234:
16235: For more detailed information, see lonnet specific documentation.
16236:
16237: =head1 RETURN MESSAGES
16238:
16239: =over 4
16240:
16241: =item * B<con_lost>: unable to contact remote host
16242:
16243: =item * B<con_delayed>: unable to contact remote host, message will be delivered
16244: when the connection is brought back up
16245:
16246: =item * B<con_failed>: unable to contact remote host and unable to save message
16247: for later delivery
16248:
16249: =item * B<error:>: an error a occurred, a description of the error follows the :
16250:
16251: =item * B<no_such_host>: unable to fund a host associated with the user/domain
16252: that was requested
16253:
16254: =back
16255:
16256: =head1 PUBLIC SUBROUTINES
16257:
16258: =head2 Session Environment Functions
16259:
16260: =over 4
16261:
16262: =item *
16263: X<appenv()>
16264: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
16265: the user envirnoment file, and will be restored for each access this
16266: user makes during this session, also modifies the %env for the current
16267: process. Optional rolesarrayref - if defined contains a reference to an array
16268: of roles which are exempt from the restriction on modifying user.role entries
16269: in the user's environment.db and in %env.
16270:
16271: =item *
16272: X<delenv()>
16273: B<delenv($delthis,$regexp)>: removes all items from the session
16274: environment file that begin with $delthis. If the
16275: optional second arg - $regexp - is true, $delthis is treated as a
16276: regular expression, otherwise \Q$delthis\E is used.
16277: The values are also deleted from the current processes %env.
16278:
16279: =item * get_env_multiple($name)
16280:
16281: gets $name from the %env hash, it seemlessly handles the cases where multiple
16282: values may be defined and end up as an array ref.
16283:
16284: returns an array of values
16285:
16286: =back
16287:
16288: =head2 User Information
16289:
16290: =over 4
16291:
16292: =item *
16293: X<queryauthenticate()>
16294: B<queryauthenticate($uname,$udom)>: try to determine user's current
16295: authentication scheme
16296:
16297: =item *
16298: X<authenticate()>
16299: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
16300: authenticate user from domain's lib servers (first use the current
16301: one). C<$upass> should be the users password.
16302: $checkdefauth is optional (value is 1 if a check should be made to
16303: authenticate user using default authentication method, and allow
16304: account creation if username does not have account in the domain).
16305: $clientcancheckhost is optional (value is 1 if checking whether the
16306: server can host will occur on the client side in lonauth.pm).
16307:
16308: =item *
16309: X<homeserver()>
16310: B<homeserver($uname,$udom)>: find the server which has
16311: the user's directory and files (there must be only one), this caches
16312: the answer, and also caches if there is a borken connection.
16313:
16314: =item *
16315: X<idget()>
16316: B<idget($udom,$idsref,$namespace)>: find the usernames behind either
16317: a list of student/employee IDs or clicker IDs
16318: (student/employee IDs are a unique resource in a domain, there must be
16319: only 1 ID per username, and only 1 username per ID in a specific domain).
16320: clickerIDs are not necessarily unique, as students might share clickers.
16321: (returns hash: id=>name,id=>name)
16322:
16323: =item *
16324: X<idrget()>
16325: B<idrget($udom,@unames)>: find the IDs behind a list of
16326: usernames (returns hash: name=>id,name=>id)
16327:
16328: =item *
16329: X<idput()>
16330: B<idput($udom,$idsref,$uhome,$namespace)>: store away a list of
16331: names and associated student/employee IDs or clicker IDs.
16332:
16333: =item *
16334: X<iddel()>
16335: B<iddel($udom,$idshashref,$uhome,$namespace)>: delete unwanted
16336: student/employee ID or clicker ID username look-ups from domain.
16337: The homeserver ($uhome) and namespace ($namespace) are optional.
16338: If no $uhome is provided, it will be determined usig &homeserver()
16339: for each user. If no $namespace is provided, the default is ids.
16340:
16341: =item *
16342: X<updateclickers()>
16343: B<updateclickers($udom,$action,$idshashref,$uhome,$critical)>: update
16344: clicker ID-to-username look-ups in clickers.db on library server.
16345: Permitted actions are add or del (i.e., add or delete). The
16346: clickers.db contains clickerID as keys (escaped), and each corresponding
16347: value is an escaped comma-separated list of usernames (for whom the
16348: library server is the homeserver), who registered that particular ID.
16349: If $critical is true, the update will be sent via &critical, otherwise
16350: &reply() will be used.
16351:
16352: =item *
16353: X<rolesinit()>
16354: B<rolesinit($udom,$username)>: get user privileges.
16355: returns user role, first access and timer interval hashes
16356:
16357: =item *
16358: X<privileged()>
16359: B<privileged($username,$domain)>: returns a true if user has a
16360: privileged and active role (i.e. su or dc), false otherwise.
16361:
16362: =item *
16363: X<getsection()>
16364: B<getsection($udom,$uname,$cname)>: finds the section of student in the
16365: course $cname, return section name/number or '' for "not in course"
16366: and '-1' for "no section"
16367:
16368: =item *
16369: X<userenvironment()>
16370: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
16371: passed in @what from the requested user's environment, returns a hash
16372:
16373: =item *
16374: X<userlog_query()>
16375: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
16376: activity.log file. %filters defines filters applied when parsing the
16377: log file. These can be start or end timestamps, or the type of action
16378: - log to look for Login or Logout events, check for Checkin or
16379: Checkout, role for role selection. The response is in the form
16380: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
16381: escaped strings of the action recorded in the activity.log file.
16382:
16383: =back
16384:
16385: =head2 User Roles
16386:
16387: =over 4
16388:
16389: =item *
16390:
16391: allowed($priv,$uri,$symb,$role,$clientip,$noblockcheck) : check for a user privilege;
16392: returns codes for allowed actions.
16393:
16394: The first argument is required, all others are optional.
16395:
16396: $priv is the privilege being checked.
16397: $uri contains additional information about what is being checked for access (e.g.,
16398: URL, course ID etc.).
16399: $symb is the unique resource instance identifier in a course; if needed,
16400: but not provided, it will be retrieved via a call to &symbread().
16401: $role is the role for which a priv is being checked (only used if priv is evb).
16402: $clientip is the user's IP address (only used when checking for access to portfolio
16403: files).
16404: $noblockcheck, if true, skips calls to &has_comm_blocking() for the bre priv. This
16405: prevents recursive calls to &allowed.
16406:
16407: F: full access
16408: U,I,K: authentication modes (cxx only)
16409: '': forbidden
16410: 1: user needs to choose course
16411: 2: browse allowed
16412: A: passphrase authentication needed
16413: B: access temporarily blocked because of a blocking event in a course.
16414: D: access blocked because access is required via session initiated via deep-link
16415:
16416: =item *
16417:
16418: constructaccess($url,$setpriv) : check for access to construction space URL
16419:
16420: See if the owner domain and name in the URL match those in the
16421: expected environment. If so, return three element list
16422: ($ownername,$ownerdomain,$ownerhome).
16423:
16424: Otherwise return the null string.
16425:
16426: If second argument 'setpriv' is true, it assigns the privileges,
16427: and returns the same three element list, unless the owner has
16428: blocked "ad hoc" Domain Coordinator access to the Author Space,
16429: in which case the null string is returned.
16430:
16431: =item *
16432:
16433: definerole($rolename,$sysrole,$domrole,$courole,$uname,$udom) : define role;
16434: define a custom role rolename set privileges in format of lonTabs/roles.tab
16435: for system, domain, and course level. $uname and $udom are optional (current
16436: user's username and domain will be used when either of $uname or $udom are absent.
16437:
16438: =item *
16439:
16440: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
16441: (rolesplain.tab); plain text explanation of a user role term.
16442: $type is Course (default) or Community.
16443: If $forcedefault evaluates to true, text returned will be default
16444: text for $type. Otherwise, if this is a course, the text returned
16445: will be a custom name for the role (if defined in the course's
16446: environment). If no custom name is defined the default is returned.
16447:
16448: =item *
16449:
16450: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
16451: All arguments are optional. Returns a hash of a roles, either for
16452: co-author/assistant author roles for a user's Construction Space
16453: (default), or if $context is 'userroles', roles for the user himself,
16454: In the hash, keys are set to colon-separated $uname,$udom,$role, and
16455: (optionally) if $withsec is true, a fourth colon-separated item - $section.
16456: For each key, value is set to colon-separated start and end times for
16457: the role. If no username and domain are specified, will default to
16458: current user/domain. Types, roles, and roledoms are references to arrays
16459: of role statuses (active, future or previous), roles
16460: (e.g., cc,in, st etc.) and domains of the roles which can be used
16461: to restrict the list of roles reported. If no array ref is
16462: provided for types, will default to return only active roles.
16463:
16464: =item *
16465:
16466: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
16467: user: $uname:$udom has a role in the course: $cdom_$cnum.
16468:
16469: Additional optional arguments are: $type (if role checking is to be restricted
16470: to certain user status types -- previous (expired roles), active (currently
16471: available roles) or future (roles available in the future), and
16472: $hideprivileged -- if true will not report course roles for users who
16473: have active Domain Coordinator role in course's domain or in additional
16474: domains (specified in 'Domains to check for privileged users' in course
16475: environment -- set via: Course Settings -> Classlists and staff listing).
16476:
16477: =item *
16478:
16479: privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
16480: $username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
16481: $possdomains and $possroles are optional array refs -- to domains to check and
16482: roles to check. If $possdomains is not specified, a dump will be done of the
16483: users' roles.db to check for a dc or su role in any domain. This can be
16484: time consuming if &privileged is called repeatedly (e.g., when displaying a
16485: classlist), so in such cases, supplying a $possdomains array is preferred, as
16486: this then allows &privileged_by_domain() to be used, which caches the identity
16487: of privileged users, eliminating the need for repeated calls to &dump().
16488:
16489: =item *
16490:
16491: privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
16492: where the outer hash keys are domains specified in the $possdomains array ref,
16493: next inner hash keys are privileged roles specified in the $roles array ref,
16494: and the innermost hash contains key = value pairs for username:domain = end:start
16495: for active or future "privileged" users with that role in that domain. To avoid
16496: repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
16497: innerhash are cached using priv_$role and $dom as the identifiers.
16498:
16499: =back
16500:
16501: =head2 User Modification
16502:
16503: =over 4
16504:
16505: =item *
16506:
16507: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
16508: user for the level given by URL. Optional start and end dates (leave empty
16509: string or zero for "no date")
16510:
16511: =item *
16512:
16513: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
16514: change a users, password, possible return values are: ok,
16515: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
16516: refused
16517:
16518: =item *
16519:
16520: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
16521:
16522: =item *
16523:
16524: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
16525: $forceid,$desiredhome,$email,$inststatus,$candelete) :
16526:
16527: will update user information (firstname,middlename,lastname,generation,
16528: permanentemail), and if forceid is true, student/employee ID also.
16529: A user's institutional affiliation(s) can also be updated.
16530: User information fields will not be overwritten with empty entries
16531: unless the field is included in the $candelete array reference.
16532: This array is included when a single user is modified via "Manage Users",
16533: or when Autoupdate.pl is run by cron in a domain.
16534:
16535: =item *
16536:
16537: modifystudent
16538:
16539: modify a student's enrollment and identification information.
16540: The course id is resolved based on the current user's environment.
16541: This means the invoking user must be a course coordinator or otherwise
16542: associated with a course.
16543:
16544: This call is essentially a wrapper for lonnet::modifyuser and
16545: lonnet::modify_student_enrollment
16546:
16547: Inputs:
16548:
16549: =over 4
16550:
16551: =item B<$udom> Student's loncapa domain
16552:
16553: =item B<$uname> Student's loncapa login name
16554:
16555: =item B<$uid> Student/Employee ID
16556:
16557: =item B<$umode> Student's authentication mode
16558:
16559: =item B<$upass> Student's password
16560:
16561: =item B<$first> Student's first name
16562:
16563: =item B<$middle> Student's middle name
16564:
16565: =item B<$last> Student's last name
16566:
16567: =item B<$gene> Student's generation
16568:
16569: =item B<$usec> Student's section in course
16570:
16571: =item B<$end> Unix time of the roles expiration
16572:
16573: =item B<$start> Unix time of the roles start date
16574:
16575: =item B<$forceid> If defined, allow $uid to be changed
16576:
16577: =item B<$desiredhome> server to use as home server for student
16578:
16579: =item B<$email> Student's permanent e-mail address
16580:
16581: =item B<$type> Type of enrollment (auto or manual)
16582:
16583: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
16584:
16585: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
16586:
16587: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
16588:
16589: =item B<$context> role change context (shown in User Management Logs display in a course)
16590:
16591: =item B<$inststatus> institutional status of user - : separated string of escaped status types
16592:
16593: =item B<$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.
16594:
16595: =back
16596:
16597: =item *
16598:
16599: modify_student_enrollment
16600:
16601: Change a student's enrollment status in a class. The environment variable
16602: 'role.request.course' must be defined for this function to proceed.
16603:
16604: Inputs:
16605:
16606: =over 4
16607:
16608: =item $udom, student's domain
16609:
16610: =item $uname, student's name
16611:
16612: =item $uid, student's user id
16613:
16614: =item $first, student's first name
16615:
16616: =item $middle
16617:
16618: =item $last
16619:
16620: =item $gene
16621:
16622: =item $usec
16623:
16624: =item $end
16625:
16626: =item $start
16627:
16628: =item $type
16629:
16630: =item $locktype
16631:
16632: =item $cid
16633:
16634: =item $selfenroll
16635:
16636: =item $context
16637:
16638: =item $credits, number of credits student will earn from this class
16639:
16640: =item $instsec, institutional course section code for student
16641:
16642: =back
16643:
16644:
16645: =item *
16646:
16647: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
16648: custom role; give a custom role to a user for the level given by URL. Specify
16649: name and domain of role author, and role name
16650:
16651: =item *
16652:
16653: revokerole($udom,$uname,$url,$role) : revoke a role for url
16654:
16655: =item *
16656:
16657: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
16658:
16659: =back
16660:
16661: =head2 Course Infomation
16662:
16663: =over 4
16664:
16665: =item *
16666:
16667: coursedescription($courseid,$options) : returns a hash of information about the
16668: specified course id, including all environment settings for the
16669: course, the description of the course will be in the hash under the
16670: key 'description'
16671:
16672: $options is an optional parameter that if supplied is a hash reference that controls
16673: what how this function works. It has the following key/values:
16674:
16675: =over 4
16676:
16677: =item freshen_cache
16678:
16679: If defined, and the environment cache for the course is valid, it is
16680: returned in the returned hash.
16681:
16682: =item one_time
16683:
16684: If defined, the last cache time is set to _now_
16685:
16686: =item user
16687:
16688: If defined, the supplied username is used instead of the current user.
16689:
16690:
16691: =back
16692:
16693: =item *
16694:
16695: resdata($name,$domain,$type,@which) : request for current parameter
16696: setting for a specific $type, where $type is either 'course' or 'user',
16697: @what should be a list of parameters to ask about. This routine caches
16698: answers for 10 minutes.
16699:
16700: =item *
16701:
16702: get_courseresdata($courseid, $domain) : dump the entire course resource
16703: data base, returning a hash that is keyed by the resource name and has
16704: values that are the resource value. I believe that the timestamps and
16705: versions are also returned.
16706:
16707: =back
16708:
16709: =head2 Course Modification
16710:
16711: =over 4
16712:
16713: =item *
16714:
16715: writecoursepref($courseid,%prefs) : write preferences (environment
16716: database) for a course
16717:
16718: =item *
16719:
16720: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
16721:
16722: =item *
16723:
16724: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
16725:
16726: =item *
16727:
16728: is_course($courseid), is_course($cdom, $cnum)
16729:
16730: Accepts either a combined $courseid (in the form of domain_courseid) or the
16731: two component version $cdom, $cnum. It checks if the specified course exists.
16732:
16733: Returns:
16734: undef if the course doesn't exist, otherwise
16735: in scalar context the combined courseid.
16736: in list context the two components of the course identifier, domain and
16737: courseid.
16738:
16739: =back
16740:
16741: =head2 Bubblesheet Configuration
16742:
16743: =over 4
16744:
16745: =item *
16746:
16747: get_scantron_config($which)
16748:
16749: $which - the name of the configuration to parse from the file.
16750:
16751: Parses and returns the bubblesheet configuration line selected as a
16752: hash of configuration file fields.
16753:
16754:
16755: Returns:
16756: If the named configuration is not in the file, an empty
16757: hash is returned.
16758:
16759: a hash with the fields
16760: name - internal name for the this configuration setup
16761: description - text to display to operator that describes this config
16762: CODElocation - if 0 or the string 'none'
16763: - no CODE exists for this config
16764: if -1 || the string 'letter'
16765: - a CODE exists for this config and is
16766: a string of letters
16767: Unsupported value (but planned for future support)
16768: if a positive integer
16769: - The CODE exists as the first n items from
16770: the question section of the form
16771: if the string 'number'
16772: - The CODE exists for this config and is
16773: a string of numbers
16774: CODEstart - (only matter if a CODE exists) column in the line where
16775: the CODE starts
16776: CODElength - length of the CODE
16777: IDstart - column where the student/employee ID starts
16778: IDlength - length of the student/employee ID info
16779: Qstart - column where the information from the bubbled
16780: 'questions' start
16781: Qlength - number of columns comprising a single bubble line from
16782: the sheet. (usually either 1 or 10)
16783: Qon - either a single character representing the character used
16784: to signal a bubble was chosen in the positional setup, or
16785: the string 'letter' if the letter of the chosen bubble is
16786: in the final, or 'number' if a number representing the
16787: chosen bubble is in the file (1->A 0->J)
16788: Qoff - the character used to represent that a bubble was
16789: left blank
16790: PaperID - if the scanning process generates a unique number for each
16791: sheet scanned the column that this ID number starts in
16792: PaperIDlength - number of columns that comprise the unique ID number
16793: for the sheet of paper
16794: FirstName - column that the first name starts in
16795: FirstNameLength - number of columns that the first name spans
16796: LastName - column that the last name starts in
16797: LastNameLength - number of columns that the last name spans
16798: BubblesPerRow - number of bubbles available in each row used to
16799: bubble an answer. (If not specified, 10 assumed).
16800:
16801:
16802: =item *
16803:
16804: get_scantronformat_file($cdom)
16805:
16806: $cdom - the course's domain (optional); if not supplied, uses
16807: domain for current $env{'request.course.id'}.
16808:
16809: Returns an array containing lines from the scantron format file for
16810: the domain of the course.
16811:
16812: If a url for a custom.tab file is listed in domain's configuration.db,
16813: lines are from this file.
16814:
16815: Otherwise, if a default.tab has been published in RES space by the
16816: domainconfig user, lines are from this file.
16817:
16818: Otherwise, fall back to getting lines from the legacy file on the
16819: local server: /home/httpd/lonTabs/default_scantronformat.tab
16820:
16821: =back
16822:
16823: =head2 Resource Subroutines
16824:
16825: =over 4
16826:
16827: =item *
16828:
16829: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
16830:
16831: =item *
16832:
16833: repcopy($filename) : subscribes to the requested file, and attempts to
16834: replicate from the owning library server, Might return
16835: 'unavailable', 'not_found', 'forbidden', 'ok', or
16836: 'bad_request', also attempts to grab the metadata for the
16837: resource. Expects the local filesystem pathname
16838: (/home/httpd/html/res/....)
16839:
16840: =back
16841:
16842: =head2 Resource Information
16843:
16844: =over 4
16845:
16846: =item *
16847:
16848: EXT($varname,$symb,$udom,$uname,$usection,$recurse,$cid) : evaluates
16849: and returns the value of a variety of different possible values,
16850: $varname should be a request string, and the other parameters can be
16851: used to specify who and what one is asking about. Ordinarily, $cid
16852: does not need to be specified, as it is retrived from
16853: $env{'request.course.id'}, but &Apache::lonnet::EXT() is called
16854: within lonuserstate::loadmap() when initializing a course, before
16855: $env{'request.course.id'} has been set, so it needs to be provided
16856: in that one case.
16857:
16858: Possible values for $varname are environment.lastname (or other item
16859: from the envirnment hash), user.name (or someother aspect about the
16860: user), resource.0.maxtries (or some other part and parameter of a
16861: resource)
16862:
16863: =item *
16864:
16865: directcondval($number) : get current value of a condition; reads from a state
16866: string
16867:
16868: =item *
16869:
16870: condval($condidx) : value of condition index based on state
16871:
16872: =item *
16873:
16874: metadata($uri,$what,$toolsymb,$liburi,$prefix,$depthcount) : request a
16875: resource's metadata, $what should be either a specific key, or either
16876: 'keys' (to get a list of possible keys) or 'packages' to get a list of
16877: packages that this resource currently uses, the last 3 arguments are
16878: only used internally for recursive metadata.
16879:
16880: the toolsymb is only used where the uri is for an external tool (for which
16881: the uri as well as the symb are guaranteed to be unique).
16882:
16883: this function automatically caches all requests except any made recursively
16884: to retrieve a list of metadata keys for an imported library file ($liburi is
16885: defined).
16886:
16887: =item *
16888:
16889: metadata_query($query,$custom,$customshow) : make a metadata query against the
16890: network of library servers; returns file handle of where SQL and regex results
16891: will be stored for query
16892:
16893: =item *
16894:
16895: symbread($filename,$donotrecurse,$ignorecachednull,$checkforblock,$possibles) :
16896: return symbolic list entry (all arguments optional).
16897:
16898: Args: filename is the filename (including path) for the file for which a symb
16899: is required; donotrecurse, if true will prevent calls to allowed() being made
16900: to check access status if more than one resource was found in the bighash
16901: (see rev. 1.249) to avoid an infinite loop if an ambiguous resource is part of
16902: a randompick); ignorecachednull, if true will prevent a symb of '' being
16903: returned if $env{$cache_str} is defined as ''; checkforblock if true will
16904: cause possible symbs to be checked to determine if they are subject to content
16905: blocking, if so they will not be included as possible symbs; possibles is a
16906: ref to a hash, which, as a side effect, will be populated with all possible
16907: symbs (content blocking not tested).
16908:
16909: returns the data handle
16910:
16911: =item *
16912:
16913: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
16914: and is a possible symb for the URL in $thisfn, and if is an encrypted
16915: resource that the user accessed using /enc/ returns a 1 on success, 0
16916: on failure, user must be in a course, as it assumes the existence of
16917: the course initial hash, and uses $env('request.course.id'}. The third
16918: arg is an optional reference to a scalar. If this arg is passed in the
16919: call to symbverify, it will be set to 1 if the symb has been set to be
16920: encrypted; otherwise it will be null.
16921:
16922: =item *
16923:
16924: symbclean($symb) : removes versions numbers from a symb, returns the
16925: cleaned symb
16926:
16927: =item *
16928:
16929: is_on_map($uri) : checks if the $uri is somewhere on the current
16930: course map, user must be in a course for it to work.
16931:
16932: =item *
16933:
16934: numval($salt) : return random seed value (addend for rndseed)
16935:
16936: =item *
16937:
16938: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
16939: a random seed, all arguments are optional, if they aren't sent it uses the
16940: environment to derive them. Note: if symb isn't sent and it can't get one
16941: from &symbread it will use the current time as its return value
16942:
16943: =item *
16944:
16945: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
16946: unfakeable, receipt
16947:
16948: =item *
16949:
16950: receipt() : API to ireceipt working off of env values; given out to users
16951:
16952: =item *
16953:
16954: countacc($url) : count the number of accesses to a given URL
16955:
16956: =item *
16957:
16958: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
16959:
16960: =item *
16961:
16962: checkin($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 $tcrsid)
16963:
16964: =item *
16965:
16966: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
16967:
16968: =item *
16969:
16970: devalidate($symb) : devalidate temporary spreadsheet calculations,
16971: forcing spreadsheet to reevaluate the resource scores next time.
16972:
16973: =item *
16974:
16975: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
16976: when viewing in course context.
16977:
16978: input: six args -- filename (decluttered), course number, course domain,
16979: url, symb (if registered) and group (if this is a
16980: group item -- e.g., bulletin board, group page etc.).
16981:
16982: output: array of five scalars --
16983: $cfile -- url for file editing if editable on current server
16984: $home -- homeserver of resource (i.e., for author if published,
16985: or course if uploaded.).
16986: $switchserver -- 1 if server switch will be needed.
16987: $forceedit -- 1 if icon/link should be to go to edit mode
16988: $forceview -- 1 if icon/link should be to go to view mode
16989:
16990: =item *
16991:
16992: is_course_upload($file,$cnum,$cdom)
16993:
16994: Used in course context to determine if current file was uploaded to
16995: the course (i.e., would be found in /userfiles/docs on the course's
16996: homeserver.
16997:
16998: input: 3 args -- filename (decluttered), course number and course domain.
16999: output: boolean -- 1 if file was uploaded.
17000:
17001: =back
17002:
17003: =head2 Storing/Retreiving Data
17004:
17005: =over 4
17006:
17007: =item *
17008:
17009: store($storehash,$symb,$namespace,$udom,$uname,$laststore) : stores hash
17010: permanently for this url; hashref needs to be given and should be a \%hashname;
17011: the remaining args aren't required and if they aren't passed or are '' they will
17012: be derived from the env (with the exception of $laststore, which is an
17013: optional arg used when a user's submission is stored in grading).
17014: $laststore is $version=$timestamp, where $version is the most recent version
17015: number retrieved for the corresponding $symb in the $namespace db file, and
17016: $timestamp is the timestamp for that transaction (UNIX time).
17017: $laststore is currently only passed when cstore() is called by
17018: structuretags::finalize_storage().
17019:
17020: =item *
17021:
17022: cstore($storehash,$symb,$namespace,$udom,$uname,$laststore) : same as store
17023: but uses critical subroutine
17024:
17025: =item *
17026:
17027: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
17028: all args are optional
17029:
17030: =item *
17031:
17032: dumpstore($namespace,$udom,$uname,$regexp,$range) :
17033: dumps the complete (or key matching regexp) namespace into a hash
17034: ($udom, $uname, $regexp, $range are optional) for a namespace that is
17035: normally &store()ed into
17036:
17037: $range should be either an integer '100' (give me the first 100
17038: matching records)
17039: or be two integers sperated by a - with no spaces
17040: '30-50' (give me the 30th through the 50th matching
17041: records)
17042:
17043:
17044: =item *
17045:
17046: putstore($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog) :
17047: replaces a &store() version of data with a replacement set of data
17048: for a particular resource in a namespace passed in the $storehash hash
17049: reference. If $tolog is true, the transaction is logged in the courselog
17050: with an action=PUTSTORE.
17051:
17052: =item *
17053:
17054: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
17055: works very similar to store/cstore, but all data is stored in a
17056: temporary location and can be reset using tmpreset, $storehash should
17057: be a hash reference, returns nothing on success
17058:
17059: =item *
17060:
17061: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
17062: similar to restore, but all data is stored in a temporary location and
17063: can be reset using tmpreset. Returns a hash of values on success,
17064: error string otherwise.
17065:
17066: =item *
17067:
17068: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
17069: deltes all keys for $symb form the temporary storage hash.
17070:
17071: =item *
17072:
17073: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
17074: reference filled in from namesp ($udom and $uname are optional)
17075:
17076: =item *
17077:
17078: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
17079: namesp ($udom and $uname are optional)
17080:
17081: =item *
17082:
17083: dump($namespace,$udom,$uname,$regexp,$range) :
17084: dumps the complete (or key matching regexp) namespace into a hash
17085: ($udom, $uname, $regexp, $range are optional)
17086:
17087: $range should be either an integer '100' (give me the first 100
17088: matching records)
17089: or be two integers sperated by a - with no spaces
17090: '30-50' (give me the 30th through the 50th matching
17091: records)
17092: =item *
17093:
17094: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
17095: $store can be a scalar, an array reference, or if the amount to be
17096: incremented is > 1, a hash reference.
17097:
17098: ($udom and $uname are optional)
17099:
17100: =item *
17101:
17102: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
17103: ($udom and $uname are optional)
17104:
17105: =item *
17106:
17107: cput($namespace,$storehash,$udom,$uname) : critical put
17108: ($udom and $uname are optional)
17109:
17110: =item *
17111:
17112: newput($namespace,$storehash,$udom,$uname) :
17113:
17114: Attempts to store the items in the $storehash, but only if they don't
17115: currently exist, if this succeeds you can be certain that you have
17116: successfully created a new key value pair in the $namespace db.
17117:
17118:
17119: Args:
17120: $namespace: name of database to store values to
17121: $storehash: hashref to store to the db
17122: $udom: (optional) domain of user containing the db
17123: $uname: (optional) name of user caontaining the db
17124:
17125: Returns:
17126: 'ok' -> succeeded in storing all keys of $storehash
17127: 'key_exists: <key>' -> failed to anything out of $storehash, as at
17128: least <key> already existed in the db (other
17129: requested keys may also already exist)
17130: 'error: <msg>' -> unable to tie the DB or other error occurred
17131: 'con_lost' -> unable to contact request server
17132: 'refused' -> action was not allowed by remote machine
17133:
17134:
17135: =item *
17136:
17137: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
17138: reference filled in from namesp (encrypts the return communication)
17139: ($udom and $uname are optional)
17140:
17141: =item *
17142:
17143: log($udom,$name,$home,$message) : write to permanent log for user; use
17144: critical subroutine
17145:
17146: =item *
17147:
17148: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
17149: array reference filled in from namespace found in domain level on either
17150: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
17151:
17152: =item *
17153:
17154: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
17155: domain level either on specified domain server ($uhome) or primary domain
17156: server ($udom and $uhome are optional)
17157:
17158: =item *
17159:
17160: get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults
17161: for: authentication, language, quotas, timezone, date locale, and portal URL in
17162: the target domain.
17163:
17164: May also include additional key => value pairs for the following groups:
17165:
17166: =over
17167:
17168: =item
17169: disk quotas (MB allocated by default to portfolios and authoring spaces).
17170:
17171: =over
17172:
17173: =item defaultquota, authorquota
17174:
17175: =back
17176:
17177: =item
17178: tools (availability of aboutme page, blog, webDAV access for authoring spaces,
17179: portfolio for users).
17180:
17181: =over
17182:
17183: =item
17184: aboutme, blog, webdav, portfolio
17185:
17186: =back
17187:
17188: =item
17189: requestcourses: ability to request courses, and how requests are processed.
17190:
17191: =over
17192:
17193: =item
17194: official, unofficial, community, textbook, placement
17195:
17196: =back
17197:
17198: =item
17199: inststatus: types of institutional affiliation, and order in which they are displayed.
17200:
17201: =over
17202:
17203: =item
17204: inststatustypes, inststatusorder, inststatusguest
17205:
17206: =back
17207:
17208: =item
17209: coursedefaults: can PDF forms can be created, default credits for courses, default quotas (MB)
17210: for course's uploaded content.
17211:
17212: =over
17213:
17214: =item
17215: canuse_pdfforms, officialcredits, unofficialcredits, textbookcredits, officialquota, unofficialquota,
17216: communityquota, textbookquota, placementquota
17217:
17218: =back
17219:
17220: =item
17221: usersessions: set options for hosting of your users in other domains, and hosting of users from other domains
17222: on your servers.
17223:
17224: =over
17225:
17226: =item
17227: remotesessions, hostedsessions
17228:
17229: =back
17230:
17231: =back
17232:
17233: In cases where a domain coordinator has never used the "Set Domain Configuration"
17234: utility to create a configuration.db file on a domain's primary library server
17235: only the following domain defaults: auth_def, auth_arg_def, lang_def
17236: -- corresponding values are authentication type (internal, krb4, krb5,
17237: or localauth), initial password or a kerberos realm, language (e.g., en-us) --
17238: will be available. Values are retrieved from cache (if current), unless the
17239: optional $ignore_cache arg is true, or from domain's configuration.db (if available),
17240: or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab.
17241:
17242: Typical usage:
17243:
17244: %domdefaults = &get_domain_defaults($target_domain);
17245:
17246: =back
17247:
17248: =head2 Network Status Functions
17249:
17250: =over 4
17251:
17252: =item *
17253:
17254: dirlist() : return directory list based on URI (first arg).
17255:
17256: Inputs: 1 required, 5 optional.
17257:
17258: =over
17259:
17260: =item
17261: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
17262:
17263: =item
17264: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
17265:
17266: =item
17267: $username - username of user/course to be listed. Extracted from $uri if absent.
17268:
17269: =item
17270: $getpropath - boolean: 1 if prepend path using &propath().
17271:
17272: =item
17273: $getuserdir - boolean: 1 if prepend path for "userfiles".
17274:
17275: =item
17276: $alternateRoot - path to prepend in place of path from $uri.
17277:
17278: =back
17279:
17280: Returns: Array of up to two items.
17281:
17282: =over
17283:
17284: a reference to an array of files/subdirectories
17285:
17286: =over
17287:
17288: Each element in the array of files/subdirectories is a & separated list of
17289: item name and the result of running stat on the item. If dirlist was requested
17290: for a file instead of a directory, the item name will be ''. For a directory
17291: listing, if the item is a metadata file, the element will end &N&M
17292: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
17293: default copyright set (1).
17294:
17295: =back
17296:
17297: a scalar containing error condition (if encountered).
17298:
17299: =over
17300:
17301: =item
17302: no_host (no homeserver identified for $username:$domain).
17303:
17304: =item
17305: no_such_host (server contacted for listing not identified as valid host).
17306:
17307: =item
17308: con_lost (connection to remote server failed).
17309:
17310: =item
17311: refused (invalid $username:$domain received on lond side).
17312:
17313: =item
17314: no_such_dir (directory at specified path on lond side does not exist).
17315:
17316: =item
17317: empty (directory at specified path on lond side is empty).
17318:
17319: =over
17320:
17321: This is currently not encountered because the &ls3, &ls2,
17322: &ls (_handler) routines on the lond side do not filter out
17323: . and .. from a directory listing.
17324:
17325: =back
17326:
17327: =back
17328:
17329: =back
17330:
17331: =item *
17332:
17333: spareserver() : find server with least workload from spare.tab
17334:
17335:
17336: =item *
17337:
17338: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
17339: if there is no corresponding loncapa host.
17340:
17341: =back
17342:
17343:
17344: =head2 Apache Request
17345:
17346: =over 4
17347:
17348: =item *
17349:
17350: ssi($url,%hash) : server side include, does a complete request cycle on url to
17351: localhost, posts hash
17352:
17353: =back
17354:
17355: =head2 Data to String to Data
17356:
17357: =over 4
17358:
17359: =item *
17360:
17361: hash2str(%hash) : convert a hash into a string complete with escaping and '='
17362: and '&' separators, supports elements that are arrayrefs and hashrefs
17363:
17364: =item *
17365:
17366: hashref2str($hashref) : convert a hashref into a string complete with
17367: escaping and '=' and '&' separators, supports elements that are
17368: arrayrefs and hashrefs
17369:
17370: =item *
17371:
17372: arrayref2str($arrayref) : convert an arrayref into a string complete
17373: with escaping and '&' separators, supports elements that are arrayrefs
17374: and hashrefs
17375:
17376: =item *
17377:
17378: str2hash($string) : convert string to hash using unescaping and
17379: splitting on '=' and '&', supports elements that are arrayrefs and
17380: hashrefs
17381:
17382: =item *
17383:
17384: str2array($string) : convert string to hash using unescaping and
17385: splitting on '&', supports elements that are arrayrefs and hashrefs
17386:
17387: =back
17388:
17389: =head2 Logging Routines
17390:
17391:
17392: These routines allow one to make log messages in the lonnet.log and
17393: lonnet.perm logfiles.
17394:
17395: =over 4
17396:
17397: =item *
17398:
17399: logtouch() : make sure the logfile, lonnet.log, exists
17400:
17401: =item *
17402:
17403: logthis() : append message to the normal lonnet.log file, it gets
17404: preiodically rolled over and deleted.
17405:
17406: =item *
17407:
17408: logperm() : append a permanent message to lonnet.perm.log, this log
17409: file never gets deleted by any automated portion of the system, only
17410: messages of critical importance should go in here.
17411:
17412:
17413: =back
17414:
17415: =head2 General File Helper Routines
17416:
17417: =over 4
17418:
17419: =item *
17420:
17421: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
17422: (a) files in /uploaded
17423: (i) If a local copy of the file exists -
17424: compares modification date of local copy with last-modified date for
17425: definitive version stored on home server for course. If local copy is
17426: stale, requests a new version from the home server and stores it.
17427: If the original has been removed from the home server, then local copy
17428: is unlinked.
17429: (ii) If local copy does not exist -
17430: requests the file from the home server and stores it.
17431:
17432: If $caller is 'uploadrep':
17433: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
17434: for request for files originally uploaded via DOCS.
17435: - returns 'ok' if fresh local copy now available, -1 otherwise.
17436:
17437: Otherwise:
17438: This indicates a call from the content generation phase of the request.
17439: - returns the entire contents of the file or -1.
17440:
17441: (b) files in /res
17442: - returns the entire contents of a file or -1;
17443: it properly subscribes to and replicates the file if neccessary.
17444:
17445:
17446: =item *
17447:
17448: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
17449: reference
17450:
17451: returns either a stat() list of data about the file or an empty list
17452: if the file doesn't exist or couldn't find out about it (connection
17453: problems or user unknown)
17454:
17455: =item *
17456:
17457: filelocation($dir,$file) : returns file system location of a file
17458: based on URI; meant to be "fairly clean" absolute reference, $dir is a
17459: directory that relative $file lookups are to looked in ($dir of /a/dir
17460: and a file of ../bob will become /a/bob)
17461:
17462: =item *
17463:
17464: hreflocation($dir,$file) : returns file system location or a URL; same as
17465: filelocation except for hrefs
17466:
17467: =item *
17468:
17469: declutter() : declutters URLs -- remove beginning slashes, 'res' etc.
17470: also removes beginning /home/httpd/html unless /priv/ follows it.
17471:
17472: =back
17473:
17474: =head2 Usererfile file routines (/uploaded*)
17475:
17476: =over 4
17477:
17478: =item *
17479:
17480: userfileupload(): main rotine for putting a file in a user or course's
17481: filespace, arguments are,
17482:
17483: formname - required - this is the name of the element in $env where the
17484: filename, and the contents of the file to create/modifed exist
17485: the filename is in $env{'form.'.$formname.'.filename'} and the
17486: contents of the file is located in $env{'form.'.$formname}
17487: context - if coursedoc, store the file in the course of the active role
17488: of the current user;
17489: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
17490: if 'canceloverwrite': delete file in tmp/overwrites directory
17491: subdir - required - subdirectory to put the file in under ../userfiles/
17492: if undefined, it will be placed in "unknown"
17493:
17494: (This routine calls clean_filename() to remove any dangerous
17495: characters from the filename, and then calls finuserfileupload() to
17496: complete the transaction)
17497:
17498: returns either the url of the uploaded file (/uploaded/....) if successful
17499: and /adm/notfound.html if unsuccessful
17500:
17501: =item *
17502:
17503: clean_filename(): routine for cleaing a filename up for storage in
17504: userfile space, argument is:
17505:
17506: filename - proposed filename
17507:
17508: returns: the new clean filename
17509:
17510: =item *
17511:
17512: finishuserfileupload(): routine that creates and sends the file to
17513: userspace, probably shouldn't be called directly
17514:
17515: docuname: username or courseid of destination for the file
17516: docudom: domain of user/course of destination for the file
17517: formname: same as for userfileupload()
17518: fname: filename (including subdirectories) for the file
17519: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
17520: if hashref, and context is scantron, will convert csv format to standard format
17521: allfiles: reference to hash used to store objects found by parser
17522: codebase: reference to hash used for codebases of java objects found by parser
17523: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
17524: thumbheight: height (pixels) of thumbnail to be created for uploaded image
17525: resizewidth: width to be used to resize image using resizeImage from ImageMagick
17526: resizeheight: height to be used to resize image using resizeImage from ImageMagick
17527: context: if 'overwrite', will move the uploaded file from its temporary location to
17528: userfiles to facilitate overwriting a previously uploaded file with same name.
17529: mimetype: reference to scalar to accommodate mime type determined
17530: from File::MMagic if $parser = parse.
17531:
17532: returns either the url of the uploaded file (/uploaded/....) if successful
17533: and /adm/notfound.html if unsuccessful (or an error message if context
17534: was 'overwrite').
17535:
17536:
17537: =item *
17538:
17539: renameuserfile(): renames an existing userfile to a new name
17540:
17541: Args:
17542: docuname: username or courseid of destination for the file
17543: docudom: domain of user/course of destination for the file
17544: old: current file name (including any subdirs under userfiles)
17545: new: desired file name (including any subdirs under userfiles)
17546:
17547: =item *
17548:
17549: mkdiruserfile(): creates a directory is a userfiles dir
17550:
17551: Args:
17552: docuname: username or courseid of destination for the file
17553: docudom: domain of user/course of destination for the file
17554: dir: dir to create (including any subdirs under userfiles)
17555:
17556: =item *
17557:
17558: removeuserfile(): removes a file that exists in userfiles
17559:
17560: Args:
17561: docuname: username or courseid of destination for the file
17562: docudom: domain of user/course of destination for the file
17563: fname: filname to delete (including any subdirs under userfiles)
17564:
17565: =item *
17566:
17567: removeuploadedurl(): convience function for removeuserfile()
17568:
17569: Args:
17570: url: a full /uploaded/... url to delete
17571:
17572: =item *
17573:
17574: get_portfile_permissions():
17575: Args:
17576: domain: domain of user or course contain the portfolio files
17577: user: name of user or num of course contain the portfolio files
17578: Returns:
17579: hashref of a dump of the proper file_permissions.db
17580:
17581:
17582: =item *
17583:
17584: get_access_controls():
17585:
17586: Args:
17587: current_permissions: the hash ref returned from get_portfile_permissions()
17588: group: (optional) the group you want the files associated with
17589: file: (optional) the file you want access info on
17590:
17591: Returns:
17592: a hash (keys are file names) of hashes containing
17593: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
17594: values are XML containing access control settings (see below)
17595:
17596: Internal notes:
17597:
17598: access controls are stored in file_permissions.db as key=value pairs.
17599: key -> path to file/file_name\0uniqueID:scope_end_start
17600: where scope -> public,guest,course,group,domains or users.
17601: end -> UNIX time for end of access (0 -> no end date)
17602: start -> UNIX time for start of access
17603:
17604: value -> XML description of access control
17605: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
17606: <start></start>
17607: <end></end>
17608:
17609: <password></password> for scope type = guest
17610:
17611: <domain></domain> for scope type = course or group
17612: <number></number>
17613: <roles id="">
17614: <role></role>
17615: <access></access>
17616: <section></section>
17617: <group></group>
17618: </roles>
17619:
17620: <dom></dom> for scope type = domains
17621:
17622: <users> for scope type = users
17623: <user>
17624: <uname></uname>
17625: <udom></udom>
17626: </user>
17627: </users>
17628: </scope>
17629:
17630: Access data is also aggregated for each file in an additional key=value pair:
17631: key -> path to file/file_name\0accesscontrol
17632: value -> reference to hash
17633: hash contains key = value pairs
17634: where key = uniqueID:scope_end_start
17635: value = UNIX time record was last updated
17636:
17637: Used to improve speed of look-ups of access controls for each file.
17638:
17639: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
17640:
17641: =item *
17642:
17643: modify_access_controls():
17644:
17645: Modifies access controls for a portfolio file
17646: Args
17647: 1. file name
17648: 2. reference to hash of required changes,
17649: 3. domain
17650: 4. username
17651: where domain,username are the domain of the portfolio owner
17652: (either a user or a course)
17653:
17654: Returns:
17655: 1. result of additions or updates ('ok' or 'error', with error message).
17656: 2. result of deletions ('ok' or 'error', with error message).
17657: 3. reference to hash of any new or updated access controls.
17658: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
17659: key = integer (inbound ID)
17660: value = uniqueID
17661:
17662: =item *
17663:
17664: get_timebased_id():
17665:
17666: Attempts to get a unique timestamp-based suffix for use with items added to a
17667: course via the Course Editor (e.g., folders, composite pages,
17668: group bulletin boards).
17669:
17670: Args: (first three required; six others optional)
17671:
17672: 1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
17673: docssequence, or name of group
17674:
17675: 2. keyid (alphanumeric): name of temporary locking key in hash,
17676: e.g., num, boardids
17677:
17678: 3. namespace: name of gdbm file used to store suffixes already assigned;
17679: file will be named nohist_namespace.db
17680:
17681: 4. cdom: domain of course; default is current course domain from %env
17682:
17683: 5. cnum: course number; default is current course number from %env
17684:
17685: 6. idtype: set to concat if an additional digit is to be appended to the
17686: unix timestamp to form the suffix, if the plain timestamp is already
17687: in use. Default is to not do this, but simply increment the unix
17688: timestamp by 1 until a unique key is obtained.
17689:
17690: 7. who: holder of locking key; defaults to user:domain for user.
17691:
17692: 8. locktries: number of attempts to obtain a lock (sleep of 1s before
17693: retrying); default is 3.
17694:
17695: 9. maxtries: number of attempts to obtain a unique suffix; default is 20.
17696:
17697: Returns:
17698:
17699: 1. suffix obtained (numeric)
17700:
17701: 2. result of deleting locking key (ok if deleted, or lock never obtained)
17702:
17703: 3. error: contains (localized) error message if an error occurred.
17704:
17705:
17706: =back
17707:
17708: =head2 HTTP Helper Routines
17709:
17710: =over 4
17711:
17712: =item *
17713:
17714: escape() : unpack non-word characters into CGI-compatible hex codes
17715:
17716: =item *
17717:
17718: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
17719:
17720: =back
17721:
17722: =head1 PRIVATE SUBROUTINES
17723:
17724: =head2 Underlying communication routines (Shouldn't call)
17725:
17726: =over 4
17727:
17728: =item *
17729:
17730: subreply() : tries to pass a message to lonc, returns con_lost if incapable
17731:
17732: =item *
17733:
17734: reply() : uses subreply to send a message to remote machine, logs all failures
17735:
17736: =item *
17737:
17738: critical() : passes a critical message to another server; if cannot
17739: get through then place message in connection buffer directory and
17740: returns con_delayed, if incapable of saving message, returns
17741: con_failed
17742:
17743: =item *
17744:
17745: reconlonc() : tries to reconnect lonc client processes.
17746:
17747: =back
17748:
17749: =head2 Resource Access Logging
17750:
17751: =over 4
17752:
17753: =item *
17754:
17755: flushcourselogs() : flush (save) buffer logs and access logs
17756:
17757: =item *
17758:
17759: courselog($what) : save message for course in hash
17760:
17761: =item *
17762:
17763: courseacclog($what) : save message for course using &courselog(). Perform
17764: special processing for specific resource types (problems, exams, quizzes, etc).
17765:
17766: =item *
17767:
17768: goodbye() : flush course logs and log shutting down; it is called in srm.conf
17769: as a PerlChildExitHandler
17770:
17771: =back
17772:
17773: =head2 Other
17774:
17775: =over 4
17776:
17777: =item *
17778:
17779: symblist($mapname,%newhash) : update symbolic storage links
17780:
17781: =back
17782:
17783: =cut
17784:
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