File:
[LON-CAPA] /
loncom /
lonnet /
perl /
lonnet.pm
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Mon May 6 19:28:24 2019 UTC (5 years, 2 months ago) by
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CVS tags:
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- Domain configuration which allows Course Owner to change a student's
password (with conditions):
- Restrict to specified institutional status types for (a) course owner
and (b) student.
1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1410 2019/05/06 19:28:24 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: =pod
31:
32: =head1 NAME
33:
34: Apache::lonnet.pm
35:
36: =head1 SYNOPSIS
37:
38: This file is an interface to the lonc processes of
39: the LON-CAPA network as well as set of elaborated functions for handling information
40: necessary for navigating through a given cluster of LON-CAPA machines within a
41: domain. There are over 40 specialized functions in this module which handle the
42: reading and transmission of metadata, user information (ids, names, environments, roles,
43: logs), file information (storage, reading, directories, extensions, replication, embedded
44: styles and descriptors), educational resources (course descriptions, section names and
45: numbers), url hashing (to assign roles on a url basis), and translating abbreviated symbols to
46: and from more descriptive phrases or explanations.
47:
48: This is part of the LearningOnline Network with CAPA project
49: described at http://www.lon-capa.org.
50:
51: =head1 Package Variables
52:
53: These are largely undocumented, so if you decipher one please note it here.
54:
55: =over 4
56:
57: =item $processmarker
58:
59: Contains the time this process was started and this servers host id.
60:
61: =item $dumpcount
62:
63: Counts the number of times a message log flush has been attempted (regardless
64: of success) by this process. Used as part of the filename when messages are
65: delayed.
66:
67: =back
68:
69: =cut
70:
71: package Apache::lonnet;
72:
73: use strict;
74: use HTTP::Date;
75: use Image::Magick;
76: use CGI::Cookie;
77:
78: use Encode;
79:
80: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir $deftex
81: $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease
82: %managerstab);
83:
84: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
85: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
86: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
87: %courseownerbuf, %coursetypebuf,$locknum);
88:
89: use IO::Socket;
90: use GDBM_File;
91: use HTML::LCParser;
92: use Fcntl qw(:flock);
93: use Storable qw(thaw nfreeze);
94: use Time::HiRes qw( sleep gettimeofday tv_interval );
95: use Cache::Memcached;
96: use Digest::MD5;
97: use Math::Random;
98: use File::MMagic;
99: use LONCAPA qw(:DEFAULT :match);
100: use LONCAPA::Configuration;
101: use LONCAPA::lonmetadata;
102: use LONCAPA::Lond;
103: use LONCAPA::LWPReq;
104: use LONCAPA::transliterate;
105:
106: use File::Copy;
107:
108: my $readit;
109: my $max_connection_retries = 20; # Or some such value.
110:
111: require Exporter;
112:
113: our @ISA = qw (Exporter);
114: our @EXPORT = qw(%env);
115:
116:
117: # ------------------------------------ Logging (parameters, docs, slots, roles)
118: {
119: my $logid;
120: sub write_log {
121: my ($context,$hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
122: if ($context eq 'course') {
123: if (($cnum eq '') || ($cdom eq '')) {
124: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
125: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
126: }
127: }
128: $logid ++;
129: my $now = time();
130: my $id=$now.'00000'.$$.'00000'.$logid;
131: my $logentry = {
132: $id => {
133: 'exe_uname' => $env{'user.name'},
134: 'exe_udom' => $env{'user.domain'},
135: 'exe_time' => $now,
136: 'exe_ip' => $ENV{'REMOTE_ADDR'},
137: 'delflag' => $delflag,
138: 'logentry' => $storehash,
139: 'uname' => $uname,
140: 'udom' => $udom,
141: }
142: };
143: return &put('nohist_'.$hash_name,$logentry,$cdom,$cnum);
144: }
145: }
146:
147: sub logtouch {
148: my $execdir=$perlvar{'lonDaemons'};
149: unless (-e "$execdir/logs/lonnet.log") {
150: open(my $fh,">>","$execdir/logs/lonnet.log");
151: close $fh;
152: }
153: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
154: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
155: }
156:
157: sub logthis {
158: my $message=shift;
159: my $execdir=$perlvar{'lonDaemons'};
160: my $now=time;
161: my $local=localtime($now);
162: if (open(my $fh,">>","$execdir/logs/lonnet.log")) {
163: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
164: print $fh $logstring;
165: close($fh);
166: }
167: return 1;
168: }
169:
170: sub logperm {
171: my $message=shift;
172: my $execdir=$perlvar{'lonDaemons'};
173: my $now=time;
174: my $local=localtime($now);
175: if (open(my $fh,">>","$execdir/logs/lonnet.perm.log")) {
176: print $fh "$now:$message:$local\n";
177: close($fh);
178: }
179: return 1;
180: }
181:
182: sub create_connection {
183: my ($hostname,$lonid) = @_;
184: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
185: Type => SOCK_STREAM,
186: Timeout => 10);
187: return 0 if (!$client);
188: print $client (join(':',$hostname,$lonid,&machine_ids($hostname),$loncaparevs{$lonid})."\n");
189: my $result = <$client>;
190: chomp($result);
191: return 1 if ($result eq 'done');
192: return 0;
193: }
194:
195: sub get_server_timezone {
196: my ($cnum,$cdom) = @_;
197: my $home=&homeserver($cnum,$cdom);
198: if ($home ne 'no_host') {
199: my $cachetime = 24*3600;
200: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
201: if (defined($cached)) {
202: return $timezone;
203: } else {
204: my $timezone = &reply('servertimezone',$home);
205: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
206: }
207: }
208: }
209:
210: sub get_server_distarch {
211: my ($lonhost,$ignore_cache) = @_;
212: if (defined($lonhost)) {
213: if (!defined(&hostname($lonhost))) {
214: return;
215: }
216: my $cachetime = 12*3600;
217: if (!$ignore_cache) {
218: my ($distarch,$cached)=&is_cached_new('serverdistarch',$lonhost);
219: if (defined($cached)) {
220: return $distarch;
221: }
222: }
223: my $rep = &reply('serverdistarch',$lonhost);
224: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
225: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
226: $rep eq '') {
227: return &do_cache_new('serverdistarch',$lonhost,$rep,$cachetime);
228: }
229: }
230: return;
231: }
232:
233: sub get_servercerts_info {
234: my ($lonhost,$hostname,$context) = @_;
235: return if ($lonhost eq '');
236: if ($hostname eq '') {
237: $hostname = &hostname($lonhost);
238: }
239: return if ($hostname eq '');
240: my ($rep,$uselocal);
241: if ($context eq 'install') {
242: $uselocal = 1;
243: } elsif (grep { $_ eq $lonhost } ¤t_machine_ids()) {
244: $uselocal = 1;
245: }
246: if (($context ne 'cgi') && ($context ne 'install') && ($uselocal)) {
247: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
248: if ($distro eq '') {
249: $uselocal = 0;
250: } elsif ($distro =~ /^(?:centos|redhat|scientific)(\d+)$/) {
251: if ($1 < 6) {
252: $uselocal = 0;
253: }
254: } elsif ($distro =~ /^(?:sles)(\d+)$/) {
255: if ($1 < 12) {
256: $uselocal = 0;
257: }
258: }
259: }
260: if ($uselocal) {
261: $rep = LONCAPA::Lond::server_certs(\%perlvar,$lonhost,$hostname);
262: } else {
263: $rep=&reply('servercerts',$lonhost);
264: }
265: my ($result,%returnhash);
266: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
267: ($rep eq 'unknown_cmd')) {
268: $result = $rep;
269: } else {
270: $result = 'ok';
271: my @pairs=split(/\&/,$rep);
272: foreach my $item (@pairs) {
273: my ($key,$value)=split(/=/,$item,2);
274: my $what = &unescape($key);
275: $returnhash{$what}=&thaw_unescape($value);
276: }
277: }
278: return ($result,\%returnhash);
279: }
280:
281: sub get_server_loncaparev {
282: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
283: if (defined($lonhost)) {
284: if (!defined(&hostname($lonhost))) {
285: undef($lonhost);
286: }
287: }
288: if (!defined($lonhost)) {
289: if (defined(&domain($dom,'primary'))) {
290: $lonhost=&domain($dom,'primary');
291: if ($lonhost eq 'no_host') {
292: undef($lonhost);
293: }
294: }
295: }
296: if (defined($lonhost)) {
297: my $cachetime = 12*3600;
298: if (!$ignore_cache) {
299: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
300: if (defined($cached)) {
301: return $loncaparev;
302: }
303: }
304: my ($answer,$loncaparev);
305: my @ids=¤t_machine_ids();
306: if (grep(/^\Q$lonhost\E$/,@ids)) {
307: $answer = $perlvar{'lonVersion'};
308: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
309: $loncaparev = $1;
310: }
311: } else {
312: $answer = &reply('serverloncaparev',$lonhost);
313: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
314: if ($caller eq 'loncron') {
315: my $hostname = &hostname($lonhost);
316: my $protocol = $protocol{$lonhost};
317: $protocol = 'http' if ($protocol ne 'https');
318: my $url = $protocol.'://'.$hostname.'/adm/about.html';
319: my $request=new HTTP::Request('GET',$url);
320: my $response=&LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,4,1);
321: unless ($response->is_error()) {
322: my $content = $response->content;
323: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
324: $loncaparev = $1;
325: }
326: }
327: } else {
328: $loncaparev = $loncaparevs{$lonhost};
329: }
330: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
331: $loncaparev = $1;
332: }
333: }
334: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
335: }
336: }
337:
338: sub get_server_homeID {
339: my ($hostname,$ignore_cache,$caller) = @_;
340: unless ($ignore_cache) {
341: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
342: if (defined($cached)) {
343: return $serverhomeID;
344: }
345: }
346: my $cachetime = 12*3600;
347: my $serverhomeID;
348: if ($caller eq 'loncron') {
349: my @machine_ids = &machine_ids($hostname);
350: foreach my $id (@machine_ids) {
351: my $response = &reply('serverhomeID',$id);
352: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
353: $serverhomeID = $response;
354: last;
355: }
356: }
357: if ($serverhomeID eq '') {
358: $serverhomeID = $machine_ids[-1];
359: }
360: } else {
361: $serverhomeID = $serverhomeIDs{$hostname};
362: }
363: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
364: }
365:
366: sub get_remote_globals {
367: my ($lonhost,$whathash,$ignore_cache) = @_;
368: my ($result,%returnhash,%whatneeded);
369: if (ref($whathash) eq 'HASH') {
370: foreach my $what (sort(keys(%{$whathash}))) {
371: my $hashid = $lonhost.'-'.$what;
372: my ($response,$cached);
373: unless ($ignore_cache) {
374: ($response,$cached)=&is_cached_new('lonnetglobal',$hashid);
375: }
376: if (defined($cached)) {
377: $returnhash{$what} = $response;
378: } else {
379: $whatneeded{$what} = 1;
380: }
381: }
382: if (keys(%whatneeded) == 0) {
383: $result = 'ok';
384: } else {
385: my $requested = &freeze_escape(\%whatneeded);
386: my $rep=&reply('readlonnetglobal:'.$requested,$lonhost);
387: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
388: ($rep eq 'unknown_cmd')) {
389: $result = $rep;
390: } else {
391: $result = 'ok';
392: my @pairs=split(/\&/,$rep);
393: foreach my $item (@pairs) {
394: my ($key,$value)=split(/=/,$item,2);
395: my $what = &unescape($key);
396: my $hashid = $lonhost.'-'.$what;
397: $returnhash{$what}=&thaw_unescape($value);
398: &do_cache_new('lonnetglobal',$hashid,$returnhash{$what},600);
399: }
400: }
401: }
402: }
403: return ($result,\%returnhash);
404: }
405:
406: sub remote_devalidate_cache {
407: my ($lonhost,$cachekeys) = @_;
408: my $items;
409: return unless (ref($cachekeys) eq 'ARRAY');
410: my $cachestr = join('&',@{$cachekeys});
411: my $response = &reply('devalidatecache:'.&escape($cachestr),$lonhost);
412: return $response;
413: }
414:
415: # -------------------------------------------------- Non-critical communication
416: sub subreply {
417: my ($cmd,$server)=@_;
418: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
419: #
420: # With loncnew process trimming, there's a timing hole between lonc server
421: # process exit and the master server picking up the listen on the AF_UNIX
422: # socket. In that time interval, a lock file will exist:
423:
424: my $lockfile=$peerfile.".lock";
425: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
426: sleep(0.1);
427: }
428: # At this point, either a loncnew parent is listening or an old lonc
429: # or loncnew child is listening so we can connect or everything's dead.
430: #
431: # We'll give the connection a few tries before abandoning it. If
432: # connection is not possible, we'll con_lost back to the client.
433: #
434: my $client;
435: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
436: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
437: Type => SOCK_STREAM,
438: Timeout => 10);
439: if ($client) {
440: last; # Connected!
441: } else {
442: &create_connection(&hostname($server),$server);
443: }
444: sleep(0.1); # Try again later if failed connection.
445: }
446: my $answer;
447: if ($client) {
448: print $client "sethost:$server:$cmd\n";
449: $answer=<$client>;
450: if (!$answer) { $answer="con_lost"; }
451: chomp($answer);
452: } else {
453: $answer = 'con_lost'; # Failed connection.
454: }
455: return $answer;
456: }
457:
458: sub reply {
459: my ($cmd,$server)=@_;
460: unless (defined(&hostname($server))) { return 'no_such_host'; }
461: my $answer=subreply($cmd,$server);
462: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
463: my $logged = $cmd;
464: if ($cmd =~ /^encrypt:([^:]+):/) {
465: my $subcmd = $1;
466: if (($subcmd eq 'auth') || ($subcmd eq 'passwd') ||
467: ($subcmd eq 'changeuserauth') || ($subcmd eq 'makeuser') ||
468: ($subcmd eq 'putdom') || ($subcmd eq 'autoexportgrades')) {
469: (undef,undef,my @rest) = split(/:/,$cmd);
470: if (($subcmd eq 'auth') || ($subcmd eq 'putdom')) {
471: splice(@rest,2,1,'Hidden');
472: } elsif ($subcmd eq 'passwd') {
473: splice(@rest,2,2,('Hidden','Hidden'));
474: } elsif (($subcmd eq 'changeuserauth') || ($subcmd eq 'makeuser') ||
475: ($subcmd eq 'autoexportgrades')) {
476: splice(@rest,3,1,'Hidden');
477: }
478: $logged = join(':',('encrypt:'.$subcmd,@rest));
479: }
480: }
481: &logthis("<font color=\"blue\">WARNING:".
482: " $logged to $server returned $answer</font>");
483: }
484: return $answer;
485: }
486:
487: # ----------------------------------------------------------- Send USR1 to lonc
488:
489: sub reconlonc {
490: my ($lonid) = @_;
491: if ($lonid) {
492: my $hostname = &hostname($lonid);
493: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
494: if ($hostname && -e $peerfile) {
495: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
496: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
497: Type => SOCK_STREAM,
498: Timeout => 10);
499: if ($client) {
500: print $client ("reset_retries\n");
501: my $answer=<$client>;
502: #reset just this one.
503: }
504: }
505: return;
506: }
507:
508: &logthis("Trying to reconnect lonc");
509: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
510: if (open(my $fh,"<",$loncfile)) {
511: my $loncpid=<$fh>;
512: chomp($loncpid);
513: if (kill 0 => $loncpid) {
514: &logthis("lonc at pid $loncpid responding, sending USR1");
515: kill USR1 => $loncpid;
516: sleep 1;
517: } else {
518: &logthis(
519: "<font color=\"blue\">WARNING:".
520: " lonc at pid $loncpid not responding, giving up</font>");
521: }
522: } else {
523: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
524: }
525: }
526:
527: # ------------------------------------------------------ Critical communication
528:
529: sub critical {
530: my ($cmd,$server)=@_;
531: unless (&hostname($server)) {
532: &logthis("<font color=\"blue\">WARNING:".
533: " Critical message to unknown server ($server)</font>");
534: return 'no_such_host';
535: }
536: my $answer=reply($cmd,$server);
537: if ($answer eq 'con_lost') {
538: &reconlonc($server);
539: my $answer=reply($cmd,$server);
540: if ($answer eq 'con_lost') {
541: my $now=time;
542: my $middlename=$cmd;
543: $middlename=substr($middlename,0,16);
544: $middlename=~s/\W//g;
545: my $dfilename=
546: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
547: $dumpcount++;
548: {
549: my $dfh;
550: if (open($dfh,">",$dfilename)) {
551: print $dfh "$cmd\n";
552: close($dfh);
553: }
554: }
555: sleep 1;
556: my $wcmd='';
557: {
558: my $dfh;
559: if (open($dfh,"<",$dfilename)) {
560: $wcmd=<$dfh>;
561: close($dfh);
562: }
563: }
564: chomp($wcmd);
565: if ($wcmd eq $cmd) {
566: &logthis("<font color=\"blue\">WARNING: ".
567: "Connection buffer $dfilename: $cmd</font>");
568: &logperm("D:$server:$cmd");
569: return 'con_delayed';
570: } else {
571: &logthis("<font color=\"red\">CRITICAL:"
572: ." Critical connection failed: $server $cmd</font>");
573: &logperm("F:$server:$cmd");
574: return 'con_failed';
575: }
576: }
577: }
578: return $answer;
579: }
580:
581: # ------------------------------------------- check if return value is an error
582:
583: sub error {
584: my ($result) = @_;
585: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
586: if ($2 == 2) { return undef; }
587: return $1;
588: }
589: return undef;
590: }
591:
592: sub convert_and_load_session_env {
593: my ($lonidsdir,$handle)=@_;
594: my @profile;
595: {
596: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
597: if (!$opened) {
598: return 0;
599: }
600: flock($idf,LOCK_SH);
601: @profile=<$idf>;
602: close($idf);
603: }
604: my %temp_env;
605: foreach my $line (@profile) {
606: if ($line !~ m/=/) {
607: return 0;
608: }
609: chomp($line);
610: my ($envname,$envvalue)=split(/=/,$line,2);
611: $temp_env{&unescape($envname)} = &unescape($envvalue);
612: }
613: unlink("$lonidsdir/$handle.id");
614: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
615: 0640)) {
616: %disk_env = %temp_env;
617: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
618: untie(%disk_env);
619: }
620: return 1;
621: }
622:
623: # ------------------------------------------- Transfer profile into environment
624: my $env_loaded;
625: sub transfer_profile_to_env {
626: my ($lonidsdir,$handle,$force_transfer) = @_;
627: if (!$force_transfer && $env_loaded) { return; }
628:
629: if (!defined($lonidsdir)) {
630: $lonidsdir = $perlvar{'lonIDsDir'};
631: }
632: if (!defined($handle)) {
633: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
634: }
635:
636: my $convert;
637: {
638: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
639: if (!$opened) {
640: return;
641: }
642: flock($idf,LOCK_SH);
643: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
644: &GDBM_READER(),0640)) {
645: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
646: untie(%disk_env);
647: } else {
648: $convert = 1;
649: }
650: }
651: if ($convert) {
652: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
653: &logthis("Failed to load session, or convert session.");
654: }
655: }
656:
657: my %remove;
658: while ( my $envname = each(%env) ) {
659: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
660: if ($time < time-300) {
661: $remove{$key}++;
662: }
663: }
664: }
665:
666: $env{'user.environment'} = "$lonidsdir/$handle.id";
667: $env_loaded=1;
668: foreach my $expired_key (keys(%remove)) {
669: &delenv($expired_key);
670: }
671: }
672:
673: # ---------------------------------------------------- Check for valid session
674: sub check_for_valid_session {
675: my ($r,$name,$userhashref,$domref) = @_;
676: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
677: my ($lonidsdir,$linkname,$pubname,$secure,$lonid);
678: if ($name eq 'lonDAV') {
679: $lonidsdir=$r->dir_config('lonDAVsessDir');
680: } else {
681: $lonidsdir=$r->dir_config('lonIDsDir');
682: if ($name eq '') {
683: $name = 'lonID';
684: }
685: }
686: if ($name eq 'lonID') {
687: $secure = 'lonSID';
688: $linkname = 'lonLinkID';
689: $pubname = 'lonPubID';
690: if (exists($cookies{$secure})) {
691: $lonid=$cookies{$secure};
692: } elsif (exists($cookies{$name})) {
693: $lonid=$cookies{$name};
694: } elsif ((exists($cookies{$linkname})) && ($ENV{'SERVER_PORT'} != 443)) {
695: $lonid=$cookies{$linkname};
696: } elsif (exists($cookies{$pubname})) {
697: $lonid=$cookies{$pubname};
698: }
699: } else {
700: $lonid=$cookies{$name};
701: }
702: return undef if (!$lonid);
703:
704: my $handle=&LONCAPA::clean_handle($lonid->value);
705: if (-l "$lonidsdir/$handle.id") {
706: my $link = readlink("$lonidsdir/$handle.id");
707: if ((-e $link) && ($link =~ m{^\Q$lonidsdir\E/(.+)\.id$})) {
708: $handle = $1;
709: }
710: }
711: if (!-e "$lonidsdir/$handle.id") {
712: if ((ref($domref)) && ($name eq 'lonID') &&
713: ($handle =~ /^($match_username)\_\d+\_($match_domain)\_(.+)$/)) {
714: my ($possuname,$possudom,$possuhome) = ($1,$2,$3);
715: if ((&domain($possudom) ne '') && (&homeserver($possuname,$possudom) eq $possuhome)) {
716: $$domref = $possudom;
717: }
718: }
719: return undef;
720: }
721:
722: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
723: return undef if (!$opened);
724:
725: flock($idf,LOCK_SH);
726: my %disk_env;
727: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
728: &GDBM_READER(),0640)) {
729: return undef;
730: }
731:
732: if (!defined($disk_env{'user.name'})
733: || !defined($disk_env{'user.domain'})) {
734: untie(%disk_env);
735: return undef;
736: }
737:
738: if (ref($userhashref) eq 'HASH') {
739: $userhashref->{'name'} = $disk_env{'user.name'};
740: $userhashref->{'domain'} = $disk_env{'user.domain'};
741: $userhashref->{'lti'} = $disk_env{'request.lti.login'};
742: if ($userhashref->{'lti'}) {
743: $userhashref->{'ltitarget'} = $disk_env{'request.lti.target'};
744: $userhashref->{'ltiuri'} = $disk_env{'request.lti.uri'};
745: }
746: }
747: untie(%disk_env);
748:
749: return $handle;
750: }
751:
752: sub timed_flock {
753: my ($file,$lock_type) = @_;
754: my $failed=0;
755: eval {
756: local $SIG{__DIE__}='DEFAULT';
757: local $SIG{ALRM}=sub {
758: $failed=1;
759: die("failed lock");
760: };
761: alarm(13);
762: flock($file,$lock_type);
763: alarm(0);
764: };
765: if ($failed) {
766: return undef;
767: } else {
768: return 1;
769: }
770: }
771:
772: sub get_sessionfile_vars {
773: my ($handle,$lonidsdir,$storearr) = @_;
774: my %returnhash;
775: unless (ref($storearr) eq 'ARRAY') {
776: return %returnhash;
777: }
778: if (-l "$lonidsdir/$handle.id") {
779: my $link = readlink("$lonidsdir/$handle.id");
780: if ((-e $link) && ($link =~ m{^\Q$lonidsdir\E/(.+)\.id$})) {
781: $handle = $1;
782: }
783: }
784: if ((-e "$lonidsdir/$handle.id") &&
785: ($handle =~ /^($match_username)\_\d+\_($match_domain)\_(.+)$/)) {
786: my ($possuname,$possudom,$possuhome) = ($1,$2,$3);
787: if ((&domain($possudom) ne '') && (&homeserver($possuname,$possudom) eq $possuhome)) {
788: if (open(my $idf,'+<',"$lonidsdir/$handle.id")) {
789: flock($idf,LOCK_SH);
790: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
791: &GDBM_READER(),0640)) {
792: foreach my $item (@{$storearr}) {
793: $returnhash{$item} = $disk_env{$item};
794: }
795: untie(%disk_env);
796: }
797: }
798: }
799: }
800: return %returnhash;
801: }
802:
803: # ---------------------------------------------------------- Append Environment
804:
805: sub appenv {
806: my ($newenv,$roles) = @_;
807: if (ref($newenv) eq 'HASH') {
808: foreach my $key (keys(%{$newenv})) {
809: my $refused = 0;
810: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
811: $refused = 1;
812: if (ref($roles) eq 'ARRAY') {
813: my ($type,$role) = ($key =~ m{^user\.(role|priv)\.(.+?)\./});
814: if (grep(/^\Q$role\E$/,@{$roles})) {
815: $refused = 0;
816: }
817: }
818: }
819: if ($refused) {
820: &logthis("<font color=\"blue\">WARNING: ".
821: "Attempt to modify environment ".$key." to ".$newenv->{$key}
822: .'</font>');
823: delete($newenv->{$key});
824: } else {
825: $env{$key}=$newenv->{$key};
826: }
827: }
828: my $lonids = $perlvar{'lonIDsDir'};
829: if ($env{'user.environment'} =~ m{^\Q$lonids/\E$match_username\_\d+\_$match_domain\_[\w\-.]+\.id$}) {
830: my $opened = open(my $env_file,'+<',$env{'user.environment'});
831: if ($opened
832: && &timed_flock($env_file,LOCK_EX)
833: &&
834: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
835: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
836: while (my ($key,$value) = each(%{$newenv})) {
837: $disk_env{$key} = $value;
838: }
839: untie(%disk_env);
840: }
841: }
842: }
843: return 'ok';
844: }
845: # ----------------------------------------------------- Delete from Environment
846:
847: sub delenv {
848: my ($delthis,$regexp,$roles) = @_;
849: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
850: my $refused = 1;
851: if (ref($roles) eq 'ARRAY') {
852: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
853: if (grep(/^\Q$role\E$/,@{$roles})) {
854: $refused = 0;
855: }
856: }
857: if ($refused) {
858: &logthis("<font color=\"blue\">WARNING: ".
859: "Attempt to delete from environment ".$delthis);
860: return 'error';
861: }
862: }
863: my $opened = open(my $env_file,'+<',$env{'user.environment'});
864: if ($opened
865: && &timed_flock($env_file,LOCK_EX)
866: &&
867: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
868: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
869: foreach my $key (keys(%disk_env)) {
870: if ($regexp) {
871: if ($key=~/^$delthis/) {
872: delete($env{$key});
873: delete($disk_env{$key});
874: }
875: } else {
876: if ($key=~/^\Q$delthis\E/) {
877: delete($env{$key});
878: delete($disk_env{$key});
879: }
880: }
881: }
882: untie(%disk_env);
883: }
884: return 'ok';
885: }
886:
887: sub get_env_multiple {
888: my ($name) = @_;
889: my @values;
890: if (defined($env{$name})) {
891: # exists is it an array
892: if (ref($env{$name})) {
893: @values=@{ $env{$name} };
894: } else {
895: $values[0]=$env{$name};
896: }
897: }
898: return(@values);
899: }
900:
901: # ------------------------------------------------------------------- Locking
902:
903: sub set_lock {
904: my ($text)=@_;
905: $locknum++;
906: my $id=$$.'-'.$locknum;
907: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
908: 'session.lock.'.$id => $text});
909: return $id;
910: }
911:
912: sub get_locks {
913: my $num=0;
914: my %texts=();
915: foreach my $lock (split(/\,/,$env{'session.locks'})) {
916: if ($lock=~/\w/) {
917: $num++;
918: $texts{$lock}=$env{'session.lock.'.$lock};
919: }
920: }
921: return ($num,%texts);
922: }
923:
924: sub remove_lock {
925: my ($id)=@_;
926: my $newlocks='';
927: foreach my $lock (split(/\,/,$env{'session.locks'})) {
928: if (($lock=~/\w/) && ($lock ne $id)) {
929: $newlocks.=','.$lock;
930: }
931: }
932: &appenv({'session.locks' => $newlocks});
933: &delenv('session.lock.'.$id);
934: }
935:
936: sub remove_all_locks {
937: my $activelocks=$env{'session.locks'};
938: foreach my $lock (split(/\,/,$env{'session.locks'})) {
939: if ($lock=~/\w/) {
940: &remove_lock($lock);
941: }
942: }
943: }
944:
945:
946: # ------------------------------------------ Find out current server userload
947: sub userload {
948: my $numusers=0;
949: {
950: opendir(LONIDS,$perlvar{'lonIDsDir'});
951: my $filename;
952: my $curtime=time;
953: while ($filename=readdir(LONIDS)) {
954: next if ($filename eq '.' || $filename eq '..');
955: next if ($filename =~ /publicuser_\d+\.id/);
956: next if ($filename =~ /^[a-f0-9]+_linked\.id$/);
957: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
958: if ($curtime-$mtime < 1800) { $numusers++; }
959: }
960: closedir(LONIDS);
961: }
962: my $userloadpercent=0;
963: my $maxuserload=$perlvar{'lonUserLoadLim'};
964: if ($maxuserload) {
965: $userloadpercent=100*$numusers/$maxuserload;
966: }
967: $userloadpercent=sprintf("%.2f",$userloadpercent);
968: return $userloadpercent;
969: }
970:
971: # ------------------------------ Find server with least workload from spare.tab
972:
973: sub spareserver {
974: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
975: my $spare_server;
976: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
977: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
978: : $userloadpercent;
979: my ($uint_dom,$remotesessions);
980: if (($udom ne '') && (&domain($udom) ne '')) {
981: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
982: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
983: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
984: $remotesessions = $udomdefaults{'remotesessions'};
985: }
986: my $spareshash = &this_host_spares($udom);
987: if (ref($spareshash) eq 'HASH') {
988: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
989: foreach my $try_server (@{ $spareshash->{'primary'} }) {
990: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
991: $try_server));
992: ($spare_server, $lowest_load) =
993: &compare_server_load($try_server, $spare_server, $lowest_load);
994: }
995: }
996:
997: my $found_server = ($spare_server ne '' && $lowest_load < 100);
998:
999: if (!$found_server) {
1000: if (ref($spareshash->{'default'}) eq 'ARRAY') {
1001: foreach my $try_server (@{ $spareshash->{'default'} }) {
1002: next unless (&spare_can_host($udom,$uint_dom,
1003: $remotesessions,$try_server));
1004: ($spare_server, $lowest_load) =
1005: &compare_server_load($try_server, $spare_server, $lowest_load);
1006: }
1007: }
1008: }
1009: }
1010:
1011: if (!$want_server_name) {
1012: if (defined($spare_server)) {
1013: my $hostname = &hostname($spare_server);
1014: if (defined($hostname)) {
1015: my $protocol = 'http';
1016: if ($protocol{$spare_server} eq 'https') {
1017: $protocol = $protocol{$spare_server};
1018: }
1019: $spare_server = $protocol.'://'.$hostname;
1020: }
1021: }
1022: }
1023: return $spare_server;
1024: }
1025:
1026: sub compare_server_load {
1027: my ($try_server, $spare_server, $lowest_load, $required) = @_;
1028:
1029: if ($required) {
1030: my ($reqdmajor,$reqdminor) = ($required =~ /^(\d+)\.(\d+)$/);
1031: my $remoterev = &get_server_loncaparev(undef,$try_server);
1032: my ($major,$minor) = ($remoterev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
1033: if (($major eq '' && $minor eq '') ||
1034: (($reqdmajor > $major) || (($reqdmajor == $major) && ($reqdminor > $minor)))) {
1035: return ($spare_server,$lowest_load);
1036: }
1037: }
1038:
1039: my $loadans = &reply('load', $try_server);
1040: my $userloadans = &reply('userload',$try_server);
1041:
1042: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
1043: return ($spare_server, $lowest_load); #didn't get a number from the server
1044: }
1045:
1046: my $load;
1047: if ($loadans =~ /\d/) {
1048: if ($userloadans =~ /\d/) {
1049: #both are numbers, pick the bigger one
1050: $load = ($loadans > $userloadans) ? $loadans
1051: : $userloadans;
1052: } else {
1053: $load = $loadans;
1054: }
1055: } else {
1056: $load = $userloadans;
1057: }
1058:
1059: if (($load =~ /\d/) && ($load < $lowest_load)) {
1060: $spare_server = $try_server;
1061: $lowest_load = $load;
1062: }
1063: return ($spare_server,$lowest_load);
1064: }
1065:
1066: # --------------------------- ask offload servers if user already has a session
1067: sub find_existing_session {
1068: my ($udom,$uname) = @_;
1069: my $spareshash = &this_host_spares($udom);
1070: if (ref($spareshash) eq 'HASH') {
1071: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
1072: foreach my $try_server (@{ $spareshash->{'primary'} }) {
1073: return $try_server if (&has_user_session($try_server, $udom, $uname));
1074: }
1075: }
1076: if (ref($spareshash->{'default'}) eq 'ARRAY') {
1077: foreach my $try_server (@{ $spareshash->{'default'} }) {
1078: return $try_server if (&has_user_session($try_server, $udom, $uname));
1079: }
1080: }
1081: }
1082: return;
1083: }
1084:
1085: # check if user's browser sent load balancer cookie and server still has session
1086: # and is not overloaded.
1087: sub check_for_balancer_cookie {
1088: my ($r,$update_mtime) = @_;
1089: my ($otherserver,$cookie);
1090: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
1091: if (exists($cookies{'balanceID'})) {
1092: my $balid = $cookies{'balanceID'};
1093: $cookie=&LONCAPA::clean_handle($balid->value);
1094: my $balancedir=$r->dir_config('lonBalanceDir');
1095: if ((-d $balancedir) && (-e "$balancedir/$cookie.id")) {
1096: if ($cookie =~ /^($match_domain)_($match_username)_[a-f0-9]+$/) {
1097: my ($possudom,$possuname) = ($1,$2);
1098: my $has_session = 0;
1099: if ((&domain($possudom) ne '') &&
1100: (&homeserver($possuname,$possudom) ne 'no_host')) {
1101: my $try_server;
1102: my $opened = open(my $idf,'+<',"$balancedir/$cookie.id");
1103: if ($opened) {
1104: flock($idf,LOCK_SH);
1105: while (my $line = <$idf>) {
1106: chomp($line);
1107: if (&hostname($line) ne '') {
1108: $try_server = $line;
1109: last;
1110: }
1111: }
1112: close($idf);
1113: if (($try_server) &&
1114: (&has_user_session($try_server,$possudom,$possuname))) {
1115: my $lowest_load = 30000;
1116: ($otherserver,$lowest_load) =
1117: &compare_server_load($try_server,undef,$lowest_load);
1118: if ($otherserver ne '' && $lowest_load < 100) {
1119: $has_session = 1;
1120: } else {
1121: undef($otherserver);
1122: }
1123: }
1124: }
1125: }
1126: if ($has_session) {
1127: if ($update_mtime) {
1128: my $atime = my $mtime = time;
1129: utime($atime,$mtime,"$balancedir/$cookie.id");
1130: }
1131: } else {
1132: unlink("$balancedir/$cookie.id");
1133: }
1134: }
1135: }
1136: }
1137: return ($otherserver,$cookie);
1138: }
1139:
1140: sub delbalcookie {
1141: my ($cookie,$balancer) =@_;
1142: if ($cookie =~ /^($match_domain)\_($match_username)\_[a-f0-9]{32}$/) {
1143: my ($udom,$uname) = ($1,$2);
1144: my $uprimary_id = &domain($udom,'primary');
1145: my $uintdom = &internet_dom($uprimary_id);
1146: my $intdom = &internet_dom($balancer);
1147: my $serverhomedom = &host_domain($balancer);
1148: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1149: return &reply("delbalcookie:$cookie",$balancer);
1150: }
1151: }
1152: }
1153:
1154: # -------------------------------- ask if server already has a session for user
1155: sub has_user_session {
1156: my ($lonid,$udom,$uname) = @_;
1157: my $result = &reply(join(':','userhassession',
1158: map {&escape($_)} ($udom,$uname)),$lonid);
1159: return 1 if ($result eq 'ok');
1160:
1161: return 0;
1162: }
1163:
1164: # --------- determine least loaded server in a user's domain which allows login
1165:
1166: sub choose_server {
1167: my ($udom,$checkloginvia,$required,$skiploadbal) = @_;
1168: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
1169: my %servers = &get_servers($udom);
1170: my $lowest_load = 30000;
1171: my ($login_host,$hostname,$portal_path,$isredirect,$balancers);
1172: if ($skiploadbal) {
1173: ($balancers,my $cached)=&is_cached_new('loadbalancing',$udom);
1174: unless (defined($cached)) {
1175: my $cachetime = 60*60*24;
1176: my %domconfig =
1177: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1178: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1179: $balancers = &do_cache_new('loadbalancing',$udom,$domconfig{'loadbalancing'},
1180: $cachetime);
1181: }
1182: }
1183: }
1184: foreach my $lonhost (keys(%servers)) {
1185: if ($skiploadbal) {
1186: if (ref($balancers) eq 'HASH') {
1187: next if (exists($balancers->{$lonhost}));
1188: }
1189: }
1190: my $loginvia;
1191: if ($checkloginvia) {
1192: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
1193: if ($loginvia) {
1194: my ($server,$path) = split(/:/,$loginvia);
1195: ($login_host, $lowest_load) =
1196: &compare_server_load($server, $login_host, $lowest_load, $required);
1197: if ($login_host eq $server) {
1198: $portal_path = $path;
1199: $isredirect = 1;
1200: }
1201: } else {
1202: ($login_host, $lowest_load) =
1203: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1204: if ($login_host eq $lonhost) {
1205: $portal_path = '';
1206: $isredirect = '';
1207: }
1208: }
1209: } else {
1210: ($login_host, $lowest_load) =
1211: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1212: }
1213: }
1214: if ($login_host ne '') {
1215: $hostname = &hostname($login_host);
1216: }
1217: return ($login_host,$hostname,$portal_path,$isredirect,$lowest_load);
1218: }
1219:
1220: # --------------------------------------------- Try to change a user's password
1221:
1222: sub changepass {
1223: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
1224: $currentpass = &escape($currentpass);
1225: $newpass = &escape($newpass);
1226: my $lonhost = $perlvar{'lonHostID'};
1227: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
1228: $server);
1229: if (! $answer) {
1230: &logthis("No reply on password change request to $server ".
1231: "by $uname in domain $udom.");
1232: } elsif ($answer =~ "^ok") {
1233: &logthis("$uname in $udom successfully changed their password ".
1234: "on $server.");
1235: } elsif ($answer =~ "^pwchange_failure") {
1236: &logthis("$uname in $udom was unable to change their password ".
1237: "on $server. The action was blocked by either lcpasswd ".
1238: "or pwchange");
1239: } elsif ($answer =~ "^non_authorized") {
1240: &logthis("$uname in $udom did not get their password correct when ".
1241: "attempting to change it on $server.");
1242: } elsif ($answer =~ "^auth_mode_error") {
1243: &logthis("$uname in $udom attempted to change their password despite ".
1244: "not being locally or internally authenticated on $server.");
1245: } elsif ($answer =~ "^unknown_user") {
1246: &logthis("$uname in $udom attempted to change their password ".
1247: "on $server but were unable to because $server is not ".
1248: "their home server.");
1249: } elsif ($answer =~ "^refused") {
1250: &logthis("$server refused to change $uname in $udom password because ".
1251: "it was sent an unencrypted request to change the password.");
1252: } elsif ($answer =~ "invalid_client") {
1253: &logthis("$server refused to change $uname in $udom password because ".
1254: "it was a reset by e-mail originating from an invalid server.");
1255: } elsif ($answer =~ "^prioruse") {
1256: &logthis("$server refused to change $uname in $udom password because ".
1257: "the password had been used before");
1258: }
1259: return $answer;
1260: }
1261:
1262: # ----------------------- Try to determine user's current authentication scheme
1263:
1264: sub queryauthenticate {
1265: my ($uname,$udom)=@_;
1266: my $uhome=&homeserver($uname,$udom);
1267: if (!$uhome) {
1268: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1269: return 'no_host';
1270: }
1271: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1272: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1273: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1274: }
1275: return $answer;
1276: }
1277:
1278: # --------- Try to authenticate user from domain's lib servers (first this one)
1279:
1280: sub authenticate {
1281: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1282: $upass=&escape($upass);
1283: $uname= &LONCAPA::clean_username($uname);
1284: my $uhome=&homeserver($uname,$udom,1);
1285: my $newhome;
1286: if ((!$uhome) || ($uhome eq 'no_host')) {
1287: # Maybe the machine was offline and only re-appeared again recently?
1288: &reconlonc();
1289: # One more
1290: $uhome=&homeserver($uname,$udom,1);
1291: if (($uhome eq 'no_host') && $checkdefauth) {
1292: if (defined(&domain($udom,'primary'))) {
1293: $newhome=&domain($udom,'primary');
1294: }
1295: if ($newhome ne '') {
1296: $uhome = $newhome;
1297: }
1298: }
1299: if ((!$uhome) || ($uhome eq 'no_host')) {
1300: &logthis("User $uname at $udom is unknown in authenticate");
1301: return 'no_host';
1302: }
1303: }
1304: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1305: if ($answer eq 'authorized') {
1306: if ($newhome) {
1307: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1308: return 'no_account_on_host';
1309: } else {
1310: &logthis("User $uname at $udom authorized by $uhome");
1311: return $uhome;
1312: }
1313: }
1314: if ($answer eq 'non_authorized') {
1315: &logthis("User $uname at $udom rejected by $uhome");
1316: return 'no_host';
1317: }
1318: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1319: return 'no_host';
1320: }
1321:
1322: sub can_host_session {
1323: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1324: my $canhost = 1;
1325: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1326: if (ref($remotesessions) eq 'HASH') {
1327: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1328: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1329: $canhost = 0;
1330: } else {
1331: $canhost = 1;
1332: }
1333: }
1334: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1335: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1336: $canhost = 1;
1337: } else {
1338: $canhost = 0;
1339: }
1340: }
1341: if ($canhost) {
1342: if ($remotesessions->{'version'} ne '') {
1343: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1344: if ($reqmajor ne '' && $reqminor ne '') {
1345: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1346: my $major = $1;
1347: my $minor = $2;
1348: if (($major < $reqmajor ) ||
1349: (($major == $reqmajor) && ($minor < $reqminor))) {
1350: $canhost = 0;
1351: }
1352: } else {
1353: $canhost = 0;
1354: }
1355: }
1356: }
1357: }
1358: }
1359: if ($canhost) {
1360: if (ref($hostedsessions) eq 'HASH') {
1361: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1362: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1363: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1364: if (($uint_dom ne '') &&
1365: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1366: $canhost = 0;
1367: } else {
1368: $canhost = 1;
1369: }
1370: }
1371: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1372: if (($uint_dom ne '') &&
1373: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1374: $canhost = 1;
1375: } else {
1376: $canhost = 0;
1377: }
1378: }
1379: }
1380: }
1381: return $canhost;
1382: }
1383:
1384: sub spare_can_host {
1385: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1386: my $canhost=1;
1387: my $try_server_hostname = &hostname($try_server);
1388: my $serverhomeID = &get_server_homeID($try_server_hostname);
1389: my $serverhomedom = &host_domain($serverhomeID);
1390: my %defdomdefaults = &get_domain_defaults($serverhomedom);
1391: if (ref($defdomdefaults{'offloadnow'}) eq 'HASH') {
1392: if ($defdomdefaults{'offloadnow'}{$try_server}) {
1393: $canhost = 0;
1394: }
1395: }
1396: if (($canhost) && ($uint_dom)) {
1397: my @intdoms;
1398: my $internet_names = &get_internet_names($try_server);
1399: if (ref($internet_names) eq 'ARRAY') {
1400: @intdoms = @{$internet_names};
1401: }
1402: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1403: my $remoterev = &get_server_loncaparev(undef,$try_server);
1404: $canhost = &can_host_session($udom,$try_server,$remoterev,
1405: $remotesessions,
1406: $defdomdefaults{'hostedsessions'});
1407: }
1408: }
1409: return $canhost;
1410: }
1411:
1412: sub this_host_spares {
1413: my ($dom) = @_;
1414: my ($dom_in_use,$lonhost_in_use,$result);
1415: my @hosts = ¤t_machine_ids();
1416: foreach my $lonhost (@hosts) {
1417: if (&host_domain($lonhost) eq $dom) {
1418: $dom_in_use = $dom;
1419: $lonhost_in_use = $lonhost;
1420: last;
1421: }
1422: }
1423: if ($dom_in_use ne '') {
1424: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1425: }
1426: if (ref($result) ne 'HASH') {
1427: $lonhost_in_use = $perlvar{'lonHostID'};
1428: $dom_in_use = &host_domain($lonhost_in_use);
1429: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1430: if (ref($result) ne 'HASH') {
1431: $result = \%spareid;
1432: }
1433: }
1434: return $result;
1435: }
1436:
1437: sub spares_for_offload {
1438: my ($dom_in_use,$lonhost_in_use) = @_;
1439: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1440: if (defined($cached)) {
1441: return $result;
1442: } else {
1443: my $cachetime = 60*60*24;
1444: my %domconfig =
1445: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1446: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1447: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1448: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1449: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1450: }
1451: }
1452: }
1453: }
1454: return;
1455: }
1456:
1457: sub get_lonbalancer_config {
1458: my ($servers) = @_;
1459: my ($currbalancer,$currtargets);
1460: if (ref($servers) eq 'HASH') {
1461: foreach my $server (keys(%{$servers})) {
1462: my %what = (
1463: spareid => 1,
1464: perlvar => 1,
1465: );
1466: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1467: if ($result eq 'ok') {
1468: if (ref($returnhash) eq 'HASH') {
1469: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1470: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1471: $currbalancer = $server;
1472: $currtargets = {};
1473: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1474: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1475: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1476: }
1477: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1478: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1479: }
1480: }
1481: last;
1482: }
1483: }
1484: }
1485: }
1486: }
1487: }
1488: return ($currbalancer,$currtargets);
1489: }
1490:
1491: sub check_loadbalancing {
1492: my ($uname,$udom,$caller) = @_;
1493: my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
1494: $rule_in_effect,$offloadto,$otherserver,$setcookie,$dom_balancers);
1495: my $lonhost = $perlvar{'lonHostID'};
1496: my @hosts = ¤t_machine_ids();
1497: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1498: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1499: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1500: my $serverhomedom = &host_domain($lonhost);
1501: my $domneedscache;
1502: my $cachetime = 60*60*24;
1503:
1504: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1505: $dom_in_use = $udom;
1506: $homeintdom = 1;
1507: } else {
1508: $dom_in_use = $serverhomedom;
1509: }
1510: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1511: unless (defined($cached)) {
1512: my %domconfig =
1513: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1514: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1515: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1516: } else {
1517: $domneedscache = $dom_in_use;
1518: }
1519: }
1520: if (ref($result) eq 'HASH') {
1521: ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers) =
1522: &check_balancer_result($result,@hosts);
1523: if ($is_balancer) {
1524: if (ref($currrules) eq 'HASH') {
1525: if ($homeintdom) {
1526: if ($uname ne '') {
1527: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1528: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1529: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1530: $rule_in_effect = $currrules->{'_LC_author'};
1531: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1532: $rule_in_effect = $currrules->{'_LC_adv'}
1533: }
1534: }
1535: if ($rule_in_effect eq '') {
1536: my %userenv = &userenvironment($udom,$uname,'inststatus');
1537: if ($userenv{'inststatus'} ne '') {
1538: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1539: my ($othertitle,$usertypes,$types) =
1540: &Apache::loncommon::sorted_inst_types($udom);
1541: if (ref($types) eq 'ARRAY') {
1542: foreach my $type (@{$types}) {
1543: if (grep(/^\Q$type\E$/,@statuses)) {
1544: if (exists($currrules->{$type})) {
1545: $rule_in_effect = $currrules->{$type};
1546: }
1547: }
1548: }
1549: }
1550: } else {
1551: if (exists($currrules->{'default'})) {
1552: $rule_in_effect = $currrules->{'default'};
1553: }
1554: }
1555: }
1556: } else {
1557: if (exists($currrules->{'default'})) {
1558: $rule_in_effect = $currrules->{'default'};
1559: }
1560: }
1561: } else {
1562: if ($currrules->{'_LC_external'} ne '') {
1563: $rule_in_effect = $currrules->{'_LC_external'};
1564: }
1565: }
1566: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1567: $uname,$udom);
1568: }
1569: }
1570: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1571: ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1572: unless (defined($cached)) {
1573: my %domconfig =
1574: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1575: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1576: $result = &do_cache_new('loadbalancing',$serverhomedom,$domconfig{'loadbalancing'},$cachetime);
1577: } else {
1578: $domneedscache = $serverhomedom;
1579: }
1580: }
1581: if (ref($result) eq 'HASH') {
1582: ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers) =
1583: &check_balancer_result($result,@hosts);
1584: if ($is_balancer) {
1585: if (ref($currrules) eq 'HASH') {
1586: if ($currrules->{'_LC_internetdom'} ne '') {
1587: $rule_in_effect = $currrules->{'_LC_internetdom'};
1588: }
1589: }
1590: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1591: $uname,$udom);
1592: }
1593: } else {
1594: if ($perlvar{'lonBalancer'} eq 'yes') {
1595: $is_balancer = 1;
1596: $offloadto = &this_host_spares($dom_in_use);
1597: }
1598: unless (defined($cached)) {
1599: $domneedscache = $serverhomedom;
1600: }
1601: }
1602: } else {
1603: if ($perlvar{'lonBalancer'} eq 'yes') {
1604: $is_balancer = 1;
1605: $offloadto = &this_host_spares($dom_in_use);
1606: }
1607: unless (defined($cached)) {
1608: $domneedscache = $serverhomedom;
1609: }
1610: }
1611: if ($domneedscache) {
1612: &do_cache_new('loadbalancing',$domneedscache,$is_balancer,$cachetime);
1613: }
1614: if ($is_balancer) {
1615: my $lowest_load = 30000;
1616: if (ref($offloadto) eq 'HASH') {
1617: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1618: foreach my $try_server (@{$offloadto->{'primary'}}) {
1619: ($otherserver,$lowest_load) =
1620: &compare_server_load($try_server,$otherserver,$lowest_load);
1621: }
1622: }
1623: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1624:
1625: if (!$found_server) {
1626: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1627: foreach my $try_server (@{$offloadto->{'default'}}) {
1628: ($otherserver,$lowest_load) =
1629: &compare_server_load($try_server,$otherserver,$lowest_load);
1630: }
1631: }
1632: }
1633: } elsif (ref($offloadto) eq 'ARRAY') {
1634: if (@{$offloadto} == 1) {
1635: $otherserver = $offloadto->[0];
1636: } elsif (@{$offloadto} > 1) {
1637: foreach my $try_server (@{$offloadto}) {
1638: ($otherserver,$lowest_load) =
1639: &compare_server_load($try_server,$otherserver,$lowest_load);
1640: }
1641: }
1642: }
1643: unless ($caller eq 'login') {
1644: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1645: $is_balancer = 0;
1646: if ($uname ne '' && $udom ne '') {
1647: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1648: &appenv({'user.loadbalexempt' => $lonhost,
1649: 'user.loadbalcheck.time' => time});
1650: }
1651: }
1652: }
1653: }
1654: unless ($homeintdom) {
1655: undef($setcookie);
1656: }
1657: }
1658: return ($is_balancer,$otherserver,$setcookie,$offloadto,$dom_balancers);
1659: }
1660:
1661: sub check_balancer_result {
1662: my ($result,@hosts) = @_;
1663: my ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers);
1664: if (ref($result) eq 'HASH') {
1665: if ($result->{'lonhost'} ne '') {
1666: my $currbalancer = $result->{'lonhost'};
1667: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1668: $is_balancer = 1;
1669: $currtargets = $result->{'targets'};
1670: $currrules = $result->{'rules'};
1671: }
1672: $dom_balancers = $currbalancer;
1673: } else {
1674: if (keys(%{$result})) {
1675: foreach my $key (keys(%{$result})) {
1676: if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&
1677: (ref($result->{$key}) eq 'HASH')) {
1678: $is_balancer = 1;
1679: $currrules = $result->{$key}{'rules'};
1680: $currtargets = $result->{$key}{'targets'};
1681: $setcookie = $result->{$key}{'cookie'};
1682: last;
1683: }
1684: }
1685: $dom_balancers = join(',',sort(keys(%{$result})));
1686: }
1687: }
1688: }
1689: return ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers);
1690: }
1691:
1692: sub get_loadbalancer_targets {
1693: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1694: my $offloadto;
1695: if ($rule_in_effect eq 'none') {
1696: return [$perlvar{'lonHostID'}];
1697: } elsif ($rule_in_effect eq '') {
1698: $offloadto = $currtargets;
1699: } else {
1700: if ($rule_in_effect eq 'homeserver') {
1701: my $homeserver = &homeserver($uname,$udom);
1702: if ($homeserver ne 'no_host') {
1703: $offloadto = [$homeserver];
1704: }
1705: } elsif ($rule_in_effect eq 'externalbalancer') {
1706: my %domconfig =
1707: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1708: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1709: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1710: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1711: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1712: }
1713: }
1714: } else {
1715: my %servers = &internet_dom_servers($udom);
1716: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1717: if (&hostname($remotebalancer) ne '') {
1718: $offloadto = [$remotebalancer];
1719: }
1720: }
1721: } elsif (&hostname($rule_in_effect) ne '') {
1722: $offloadto = [$rule_in_effect];
1723: }
1724: }
1725: return $offloadto;
1726: }
1727:
1728: sub internet_dom_servers {
1729: my ($dom) = @_;
1730: my (%uniqservers,%servers);
1731: my $primaryserver = &hostname(&domain($dom,'primary'));
1732: my @machinedoms = &machine_domains($primaryserver);
1733: foreach my $mdom (@machinedoms) {
1734: my %currservers = %servers;
1735: my %server = &get_servers($mdom);
1736: %servers = (%currservers,%server);
1737: }
1738: my %by_hostname;
1739: foreach my $id (keys(%servers)) {
1740: push(@{$by_hostname{$servers{$id}}},$id);
1741: }
1742: foreach my $hostname (sort(keys(%by_hostname))) {
1743: if (@{$by_hostname{$hostname}} > 1) {
1744: my $match = 0;
1745: foreach my $id (@{$by_hostname{$hostname}}) {
1746: if (&host_domain($id) eq $dom) {
1747: $uniqservers{$id} = $hostname;
1748: $match = 1;
1749: }
1750: }
1751: unless ($match) {
1752: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1753: }
1754: } else {
1755: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1756: }
1757: }
1758: return %uniqservers;
1759: }
1760:
1761: sub trusted_domains {
1762: my ($cmdtype,$calldom) = @_;
1763: my ($trusted,$untrusted);
1764: if (&domain($calldom) eq '') {
1765: return ($trusted,$untrusted);
1766: }
1767: unless ($cmdtype =~ /^(content|shared|enroll|coaurem|othcoau|domroles|catalog|reqcrs|msg)$/) {
1768: return ($trusted,$untrusted);
1769: }
1770: my $callprimary = &domain($calldom,'primary');
1771: my $intcalldom = &Apache::lonnet::internet_dom($callprimary);
1772: if ($intcalldom eq '') {
1773: return ($trusted,$untrusted);
1774: }
1775:
1776: my ($trustconfig,$cached)=&Apache::lonnet::is_cached_new('trust',$calldom);
1777: unless (defined($cached)) {
1778: my %domconfig = &Apache::lonnet::get_dom('configuration',['trust'],$calldom);
1779: &Apache::lonnet::do_cache_new('trust',$calldom,$domconfig{'trust'},3600);
1780: $trustconfig = $domconfig{'trust'};
1781: }
1782: if (ref($trustconfig)) {
1783: my (%possexc,%possinc,@allexc,@allinc);
1784: if (ref($trustconfig->{$cmdtype}) eq 'HASH') {
1785: if (ref($trustconfig->{$cmdtype}->{'exc'}) eq 'ARRAY') {
1786: map { $possexc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'exc'}};
1787: }
1788: if (ref($trustconfig->{$cmdtype}->{'inc'}) eq 'ARRAY') {
1789: $possinc{$intcalldom} = 1;
1790: map { $possinc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'inc'}};
1791: }
1792: }
1793: if (keys(%possexc)) {
1794: if (keys(%possinc)) {
1795: foreach my $key (sort(keys(%possexc))) {
1796: next if ($key eq $intcalldom);
1797: unless ($possinc{$key}) {
1798: push(@allexc,$key);
1799: }
1800: }
1801: } else {
1802: @allexc = sort(keys(%possexc));
1803: }
1804: }
1805: if (keys(%possinc)) {
1806: $possinc{$intcalldom} = 1;
1807: @allinc = sort(keys(%possinc));
1808: }
1809: if ((@allexc > 0) || (@allinc > 0)) {
1810: my %doms_by_intdom;
1811: my %allintdoms = &all_host_intdom();
1812: my %alldoms = &all_host_domain();
1813: foreach my $key (%allintdoms) {
1814: if (ref($doms_by_intdom{$allintdoms{$key}}) eq 'ARRAY') {
1815: unless (grep(/^\Q$alldoms{$key}\E$/,@{$doms_by_intdom{$allintdoms{$key}}})) {
1816: push(@{$doms_by_intdom{$allintdoms{$key}}},$alldoms{$key});
1817: }
1818: } else {
1819: $doms_by_intdom{$allintdoms{$key}} = [$alldoms{$key}];
1820: }
1821: }
1822: foreach my $exc (@allexc) {
1823: if (ref($doms_by_intdom{$exc}) eq 'ARRAY') {
1824: push(@{$untrusted},@{$doms_by_intdom{$exc}});
1825: }
1826: }
1827: foreach my $inc (@allinc) {
1828: if (ref($doms_by_intdom{$inc}) eq 'ARRAY') {
1829: push(@{$trusted},@{$doms_by_intdom{$inc}});
1830: }
1831: }
1832: }
1833: }
1834: return ($trusted,$untrusted);
1835: }
1836:
1837: sub will_trust {
1838: my ($cmdtype,$domain,$possdom) = @_;
1839: return 1 if ($domain eq $possdom);
1840: my ($trustedref,$untrustedref) = &trusted_domains($cmdtype,$possdom);
1841: my $willtrust;
1842: if ((ref($trustedref) eq 'ARRAY') && (@{$trustedref} > 0)) {
1843: if (grep(/^\Q$domain\E$/,@{$trustedref})) {
1844: $willtrust = 1;
1845: }
1846: } elsif ((ref($untrustedref) eq 'ARRAY') && (@{$untrustedref} > 0)) {
1847: unless (grep(/^\Q$domain\E$/,@{$untrustedref})) {
1848: $willtrust = 1;
1849: }
1850: } else {
1851: $willtrust = 1;
1852: }
1853: return $willtrust;
1854: }
1855:
1856: # ---------------------- Find the homebase for a user from domain's lib servers
1857:
1858: my %homecache;
1859: sub homeserver {
1860: my ($uname,$udom,$ignoreBadCache)=@_;
1861: my $index="$uname:$udom";
1862:
1863: if (exists($homecache{$index})) { return $homecache{$index}; }
1864:
1865: my %servers = &get_servers($udom,'library');
1866: foreach my $tryserver (keys(%servers)) {
1867: next if ($ignoreBadCache ne 'true' &&
1868: exists($badServerCache{$tryserver}));
1869:
1870: my $answer=reply("home:$udom:$uname",$tryserver);
1871: if ($answer eq 'found') {
1872: delete($badServerCache{$tryserver});
1873: return $homecache{$index}=$tryserver;
1874: } elsif ($answer eq 'no_host') {
1875: $badServerCache{$tryserver}=1;
1876: }
1877: }
1878: return 'no_host';
1879: }
1880:
1881: # ----- Find the usernames behind a list of student/employee IDs or clicker IDs
1882:
1883: sub idget {
1884: my ($udom,$idsref,$namespace)=@_;
1885: my %returnhash=();
1886: my @ids=();
1887: if (ref($idsref) eq 'ARRAY') {
1888: @ids = @{$idsref};
1889: } else {
1890: return %returnhash;
1891: }
1892: if ($namespace eq '') {
1893: $namespace = 'ids';
1894: }
1895:
1896: my %servers = &get_servers($udom,'library');
1897: foreach my $tryserver (keys(%servers)) {
1898: my $idlist=join('&', map { &escape($_); } @ids);
1899: if ($namespace eq 'ids') {
1900: $idlist=~tr/A-Z/a-z/;
1901: }
1902: my $reply;
1903: if ($namespace eq 'ids') {
1904: $reply=&reply("idget:$udom:".$idlist,$tryserver);
1905: } else {
1906: $reply=&reply("getdom:$udom:$namespace:$idlist",$tryserver);
1907: }
1908: my @answer=();
1909: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1910: @answer=split(/\&/,$reply);
1911: } ;
1912: my $i;
1913: for ($i=0;$i<=$#ids;$i++) {
1914: if ($answer[$i]) {
1915: $returnhash{$ids[$i]}=&unescape($answer[$i]);
1916: }
1917: }
1918: }
1919: return %returnhash;
1920: }
1921:
1922: # ------------------------------------- Find the IDs behind a list of usernames
1923:
1924: sub idrget {
1925: my ($udom,@unames)=@_;
1926: my %returnhash=();
1927: foreach my $uname (@unames) {
1928: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1929: }
1930: return %returnhash;
1931: }
1932:
1933: # Store away a list of names and associated student/employee IDs or clicker IDs
1934:
1935: sub idput {
1936: my ($udom,$idsref,$uhom,$namespace)=@_;
1937: my %servers=();
1938: my %ids=();
1939: my %byid = ();
1940: if (ref($idsref) eq 'HASH') {
1941: %ids=%{$idsref};
1942: }
1943: if ($namespace eq '') {
1944: $namespace = 'ids';
1945: }
1946: foreach my $uname (keys(%ids)) {
1947: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1948: if ($uhom eq '') {
1949: $uhom=&homeserver($uname,$udom);
1950: }
1951: if ($uhom ne 'no_host') {
1952: my $esc_unam=&escape($uname);
1953: if ($namespace eq 'ids') {
1954: my $id=&escape($ids{$uname});
1955: $id=~tr/A-Z/a-z/;
1956: my $esc_unam=&escape($uname);
1957: $servers{$uhom}.=$id.'='.$esc_unam.'&';
1958: } else {
1959: my @currids = split(/,/,$ids{$uname});
1960: foreach my $id (@currids) {
1961: $byid{$uhom}{$id} .= $uname.',';
1962: }
1963: }
1964: }
1965: }
1966: if ($namespace eq 'clickers') {
1967: foreach my $server (keys(%byid)) {
1968: if (ref($byid{$server}) eq 'HASH') {
1969: foreach my $id (keys(%{$byid{$server}})) {
1970: $byid{$server} =~ s/,$//;
1971: $servers{$uhom}.=&escape($id).'='.&escape($byid{$server}).'&';
1972: }
1973: }
1974: }
1975: }
1976: foreach my $server (keys(%servers)) {
1977: $servers{$server} =~ s/\&$//;
1978: if ($namespace eq 'ids') {
1979: &critical('idput:'.$udom.':'.$servers{$server},$server);
1980: } else {
1981: &critical('updateclickers:'.$udom.':add:'.$servers{$server},$server);
1982: }
1983: }
1984: }
1985:
1986: # ------------- Delete unwanted student/employee IDs or clicker IDs from domain
1987:
1988: sub iddel {
1989: my ($udom,$idshashref,$uhome,$namespace)=@_;
1990: my %result=();
1991: my %ids=();
1992: my %byid = ();
1993: if (ref($idshashref) eq 'HASH') {
1994: %ids=%{$idshashref};
1995: } else {
1996: return %result;
1997: }
1998: if ($namespace eq '') {
1999: $namespace = 'ids';
2000: }
2001: my %servers=();
2002: while (my ($id,$unamestr) = each(%ids)) {
2003: if ($namespace eq 'ids') {
2004: my $uhom = $uhome;
2005: if ($uhom eq '') {
2006: $uhom=&homeserver($unamestr,$udom);
2007: }
2008: if ($uhom ne 'no_host') {
2009: $servers{$uhom}.='&'.&escape($id);
2010: }
2011: } else {
2012: my @curritems = split(/,/,$ids{$id});
2013: foreach my $uname (@curritems) {
2014: my $uhom = $uhome;
2015: if ($uhom eq '') {
2016: $uhom=&homeserver($uname,$udom);
2017: }
2018: if ($uhom ne 'no_host') {
2019: $byid{$uhom}{$id} .= $uname.',';
2020: }
2021: }
2022: }
2023: }
2024: if ($namespace eq 'clickers') {
2025: foreach my $server (keys(%byid)) {
2026: if (ref($byid{$server}) eq 'HASH') {
2027: foreach my $id (keys(%{$byid{$server}})) {
2028: $byid{$server}{$id} =~ s/,$//;
2029: $servers{$server}.=&escape($id).'='.&escape($byid{$server}{$id}).'&';
2030: }
2031: }
2032: }
2033: }
2034: foreach my $server (keys(%servers)) {
2035: $servers{$server} =~ s/\&$//;
2036: if ($namespace eq 'ids') {
2037: $result{$server} = &critical('iddel:'.$udom.':'.$servers{$server},$uhome);
2038: } elsif ($namespace eq 'clickers') {
2039: $result{$server} = &critical('updateclickers:'.$udom.':del:'.$servers{$server},$server);
2040: }
2041: }
2042: return %result;
2043: }
2044:
2045: # ----- Update clicker ID-to-username look-ups in clickers.db on library server
2046:
2047: sub updateclickers {
2048: my ($udom,$action,$idshashref,$uhome,$critical) = @_;
2049: my %clickers;
2050: if (ref($idshashref) eq 'HASH') {
2051: %clickers=%{$idshashref};
2052: } else {
2053: return;
2054: }
2055: my $items='';
2056: foreach my $item (keys(%clickers)) {
2057: $items.=&escape($item).'='.&escape($clickers{$item}).'&';
2058: }
2059: $items=~s/\&$//;
2060: my $request = "updateclickers:$udom:$action:$items";
2061: if ($critical) {
2062: return &critical($request,$uhome);
2063: } else {
2064: return &reply($request,$uhome);
2065: }
2066: }
2067:
2068: # ------------------------------dump from db file owned by domainconfig user
2069: sub dump_dom {
2070: my ($namespace, $udom, $regexp) = @_;
2071:
2072: $udom ||= $env{'user.domain'};
2073:
2074: return () unless $udom;
2075:
2076: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
2077: }
2078:
2079: # ------------------------------------------ get items from domain db files
2080:
2081: sub get_dom {
2082: my ($namespace,$storearr,$udom,$uhome)=@_;
2083: return if ($udom eq 'public');
2084: my $items='';
2085: foreach my $item (@$storearr) {
2086: $items.=&escape($item).'&';
2087: }
2088: $items=~s/\&$//;
2089: if (!$udom) {
2090: $udom=$env{'user.domain'};
2091: return if ($udom eq 'public');
2092: if (defined(&domain($udom,'primary'))) {
2093: $uhome=&domain($udom,'primary');
2094: } else {
2095: undef($uhome);
2096: }
2097: } else {
2098: if (!$uhome) {
2099: if (defined(&domain($udom,'primary'))) {
2100: $uhome=&domain($udom,'primary');
2101: }
2102: }
2103: }
2104: if ($udom && $uhome && ($uhome ne 'no_host')) {
2105: my $rep;
2106: if ($namespace =~ /^enc/) {
2107: $rep=&reply("encrypt:egetdom:$udom:$namespace:$items",$uhome);
2108: } else {
2109: $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
2110: }
2111: my %returnhash;
2112: if ($rep eq '' || $rep =~ /^error: 2 /) {
2113: return %returnhash;
2114: }
2115: my @pairs=split(/\&/,$rep);
2116: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
2117: return @pairs;
2118: }
2119: my $i=0;
2120: foreach my $item (@$storearr) {
2121: $returnhash{$item}=&thaw_unescape($pairs[$i]);
2122: $i++;
2123: }
2124: return %returnhash;
2125: } else {
2126: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
2127: }
2128: }
2129:
2130: # -------------------------------------------- put items in domain db files
2131:
2132: sub put_dom {
2133: my ($namespace,$storehash,$udom,$uhome)=@_;
2134: if (!$udom) {
2135: $udom=$env{'user.domain'};
2136: if (defined(&domain($udom,'primary'))) {
2137: $uhome=&domain($udom,'primary');
2138: } else {
2139: undef($uhome);
2140: }
2141: } else {
2142: if (!$uhome) {
2143: if (defined(&domain($udom,'primary'))) {
2144: $uhome=&domain($udom,'primary');
2145: }
2146: }
2147: }
2148: if ($udom && $uhome && ($uhome ne 'no_host')) {
2149: my $items='';
2150: foreach my $item (keys(%$storehash)) {
2151: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
2152: }
2153: $items=~s/\&$//;
2154: if ($namespace =~ /^enc/) {
2155: return &reply("encrypt:putdom:$udom:$namespace:$items",$uhome);
2156: } else {
2157: return &reply("putdom:$udom:$namespace:$items",$uhome);
2158: }
2159: } else {
2160: &logthis("put_dom failed - no homeserver and/or domain");
2161: }
2162: }
2163:
2164: # --------------------- newput for items in db file owned by domainconfig user
2165: sub newput_dom {
2166: my ($namespace,$storehash,$udom) = @_;
2167: my $result;
2168: if (!$udom) {
2169: $udom=$env{'user.domain'};
2170: }
2171: if ($udom) {
2172: my $uname = &get_domainconfiguser($udom);
2173: $result = &newput($namespace,$storehash,$udom,$uname);
2174: }
2175: return $result;
2176: }
2177:
2178: # --------------------- delete for items in db file owned by domainconfig user
2179: sub del_dom {
2180: my ($namespace,$storearr,$udom)=@_;
2181: if (ref($storearr) eq 'ARRAY') {
2182: if (!$udom) {
2183: $udom=$env{'user.domain'};
2184: }
2185: if ($udom) {
2186: my $uname = &get_domainconfiguser($udom);
2187: return &del($namespace,$storearr,$udom,$uname);
2188: }
2189: }
2190: }
2191:
2192: # ----------------------------------construct domainconfig user for a domain
2193: sub get_domainconfiguser {
2194: my ($udom) = @_;
2195: return $udom.'-domainconfig';
2196: }
2197:
2198: sub retrieve_inst_usertypes {
2199: my ($udom) = @_;
2200: my (%returnhash,@order);
2201: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
2202: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
2203: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
2204: return ($domdefs{'inststatustypes'},$domdefs{'inststatusorder'});
2205: } else {
2206: if (defined(&domain($udom,'primary'))) {
2207: my $uhome=&domain($udom,'primary');
2208: my $rep=&reply("inst_usertypes:$udom",$uhome);
2209: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
2210: &logthis("retrieve_inst_usertypes failed - $rep returned from $uhome in domain: $udom");
2211: return (\%returnhash,\@order);
2212: }
2213: my ($hashitems,$orderitems) = split(/:/,$rep);
2214: my @pairs=split(/\&/,$hashitems);
2215: foreach my $item (@pairs) {
2216: my ($key,$value)=split(/=/,$item,2);
2217: $key = &unescape($key);
2218: next if ($key =~ /^error: 2 /);
2219: $returnhash{$key}=&thaw_unescape($value);
2220: }
2221: my @esc_order = split(/\&/,$orderitems);
2222: foreach my $item (@esc_order) {
2223: push(@order,&unescape($item));
2224: }
2225: } else {
2226: &logthis("retrieve_inst_usertypes failed - no primary domain server for $udom");
2227: }
2228: return (\%returnhash,\@order);
2229: }
2230: }
2231:
2232: sub is_domainimage {
2233: my ($url) = @_;
2234: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+[^/]-) {
2235: if (&domain($1) ne '') {
2236: return '1';
2237: }
2238: }
2239: return;
2240: }
2241:
2242: sub inst_directory_query {
2243: my ($srch) = @_;
2244: my $udom = $srch->{'srchdomain'};
2245: my %results;
2246: my $homeserver = &domain($udom,'primary');
2247: my $outcome;
2248: if ($homeserver ne '') {
2249: unless ($homeserver eq $perlvar{'lonHostID'}) {
2250: if ($srch->{'srchby'} eq 'email') {
2251: my $lcrev = &get_server_loncaparev(undef,$homeserver);
2252: my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
2253: if (($major eq '' && $minor eq '') || ($major < 2) ||
2254: (($major == 2) && ($minor < 12))) {
2255: return;
2256: }
2257: }
2258: }
2259: my $queryid=&reply("querysend:instdirsearch:".
2260: &escape($srch->{'srchby'}).':'.
2261: &escape($srch->{'srchterm'}).':'.
2262: &escape($srch->{'srchtype'}),$homeserver);
2263: my $host=&hostname($homeserver);
2264: if ($queryid !~/^\Q$host\E\_/) {
2265: &logthis('institutional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.' in domain '.$udom);
2266: return;
2267: }
2268: my $response = &get_query_reply($queryid);
2269: my $maxtries = 5;
2270: my $tries = 1;
2271: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2272: $response = &get_query_reply($queryid);
2273: $tries ++;
2274: }
2275:
2276: if (!&error($response) && $response ne 'refused') {
2277: if ($response eq 'unavailable') {
2278: $outcome = $response;
2279: } else {
2280: $outcome = 'ok';
2281: my @matches = split(/\n/,$response);
2282: foreach my $match (@matches) {
2283: my ($key,$value) = split(/=/,$match);
2284: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
2285: }
2286: }
2287: }
2288: }
2289: return ($outcome,%results);
2290: }
2291:
2292: sub usersearch {
2293: my ($srch) = @_;
2294: my $dom = $srch->{'srchdomain'};
2295: my %results;
2296: my %libserv = &all_library();
2297: my $query = 'usersearch';
2298: foreach my $tryserver (keys(%libserv)) {
2299: if (&host_domain($tryserver) eq $dom) {
2300: unless ($tryserver eq $perlvar{'lonHostID'}) {
2301: if ($srch->{'srchby'} eq 'email') {
2302: my $lcrev = &get_server_loncaparev(undef,$tryserver);
2303: my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
2304: next if (($major eq '' && $minor eq '') || ($major < 2) ||
2305: (($major == 2) && ($minor < 12)));
2306: }
2307: }
2308: my $host=&hostname($tryserver);
2309: my $queryid=
2310: &reply("querysend:".&escape($query).':'.
2311: &escape($srch->{'srchby'}).':'.
2312: &escape($srch->{'srchtype'}).':'.
2313: &escape($srch->{'srchterm'}),$tryserver);
2314: if ($queryid !~/^\Q$host\E\_/) {
2315: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
2316: next;
2317: }
2318: my $reply = &get_query_reply($queryid);
2319: my $maxtries = 1;
2320: my $tries = 1;
2321: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
2322: $reply = &get_query_reply($queryid);
2323: $tries ++;
2324: }
2325: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
2326: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
2327: } else {
2328: my @matches;
2329: if ($reply =~ /\n/) {
2330: @matches = split(/\n/,$reply);
2331: } else {
2332: @matches = split(/\&/,$reply);
2333: }
2334: foreach my $match (@matches) {
2335: my ($uname,$udom,%userhash);
2336: foreach my $entry (split(/:/,$match)) {
2337: my ($key,$value) =
2338: map {&unescape($_);} split(/=/,$entry);
2339: $userhash{$key} = $value;
2340: if ($key eq 'username') {
2341: $uname = $value;
2342: } elsif ($key eq 'domain') {
2343: $udom = $value;
2344: }
2345: }
2346: $results{$uname.':'.$udom} = \%userhash;
2347: }
2348: }
2349: }
2350: }
2351: return %results;
2352: }
2353:
2354: sub get_instuser {
2355: my ($udom,$uname,$id) = @_;
2356: my $homeserver = &domain($udom,'primary');
2357: my ($outcome,%results);
2358: if ($homeserver ne '') {
2359: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
2360: &escape($id).':'.&escape($udom),$homeserver);
2361: my $host=&hostname($homeserver);
2362: if ($queryid !~/^\Q$host\E\_/) {
2363: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
2364: return;
2365: }
2366: my $response = &get_query_reply($queryid);
2367: my $maxtries = 5;
2368: my $tries = 1;
2369: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2370: $response = &get_query_reply($queryid);
2371: $tries ++;
2372: }
2373: if (!&error($response) && $response ne 'refused') {
2374: if ($response eq 'unavailable') {
2375: $outcome = $response;
2376: } else {
2377: $outcome = 'ok';
2378: my @matches = split(/\n/,$response);
2379: foreach my $match (@matches) {
2380: my ($key,$value) = split(/=/,$match);
2381: $results{&unescape($key)} = &thaw_unescape($value);
2382: }
2383: }
2384: }
2385: }
2386: my %userinfo;
2387: if (ref($results{$uname}) eq 'HASH') {
2388: %userinfo = %{$results{$uname}};
2389: }
2390: return ($outcome,%userinfo);
2391: }
2392:
2393: sub get_multiple_instusers {
2394: my ($udom,$users,$caller) = @_;
2395: my ($outcome,$results);
2396: if (ref($users) eq 'HASH') {
2397: my $count = keys(%{$users});
2398: my $requested = &freeze_escape($users);
2399: my $homeserver = &domain($udom,'primary');
2400: if ($homeserver ne '') {
2401: my $queryid=&reply('querysend:getmultinstusers:::'.$caller.'='.$requested,$homeserver);
2402: my $host=&hostname($homeserver);
2403: if ($queryid !~/^\Q$host\E\_/) {
2404: &logthis('get_multiple_instusers invalid queryid: '.$queryid.
2405: ' for host: '.$homeserver.'in domain '.$udom);
2406: return ($outcome,$results);
2407: }
2408: my $response = &get_query_reply($queryid);
2409: my $maxtries = 5;
2410: if ($count > 100) {
2411: $maxtries = 1+int($count/20);
2412: }
2413: my $tries = 1;
2414: while (($response=~/^timeout/) && ($tries <= $maxtries)) {
2415: $response = &get_query_reply($queryid);
2416: $tries ++;
2417: }
2418: if ($response eq '') {
2419: $results = {};
2420: foreach my $key (keys(%{$users})) {
2421: my ($uname,$id);
2422: if ($caller eq 'id') {
2423: $id = $key;
2424: } else {
2425: $uname = $key;
2426: }
2427: my ($resp,%info) = &get_instuser($udom,$uname,$id);
2428: $outcome = $resp;
2429: if ($resp eq 'ok') {
2430: %{$results} = (%{$results}, %info);
2431: } else {
2432: last;
2433: }
2434: }
2435: } elsif(!&error($response) && ($response ne 'refused')) {
2436: if (($response eq 'unavailable') || ($response eq 'invalid') || ($response eq 'timeout')) {
2437: $outcome = $response;
2438: } else {
2439: ($outcome,my $userdata) = split(/=/,$response,2);
2440: if ($outcome eq 'ok') {
2441: $results = &thaw_unescape($userdata);
2442: }
2443: }
2444: }
2445: }
2446: }
2447: return ($outcome,$results);
2448: }
2449:
2450: sub inst_rulecheck {
2451: my ($udom,$uname,$id,$item,$rules) = @_;
2452: my %returnhash;
2453: if ($udom ne '') {
2454: if (ref($rules) eq 'ARRAY') {
2455: @{$rules} = map {&escape($_);} (@{$rules});
2456: my $rulestr = join(':',@{$rules});
2457: my $homeserver=&domain($udom,'primary');
2458: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2459: my $response;
2460: if ($item eq 'username') {
2461: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
2462: ':'.&escape($uname).':'.$rulestr,
2463: $homeserver));
2464: } elsif ($item eq 'id') {
2465: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
2466: ':'.&escape($id).':'.$rulestr,
2467: $homeserver));
2468: } elsif ($item eq 'selfcreate') {
2469: $response=&unescape(&reply('instselfcreatecheck:'.
2470: &escape($udom).':'.&escape($uname).
2471: ':'.$rulestr,$homeserver));
2472: }
2473: if ($response ne 'refused') {
2474: my @pairs=split(/\&/,$response);
2475: foreach my $item (@pairs) {
2476: my ($key,$value)=split(/=/,$item,2);
2477: $key = &unescape($key);
2478: next if ($key =~ /^error: 2 /);
2479: $returnhash{$key}=&thaw_unescape($value);
2480: }
2481: }
2482: }
2483: }
2484: }
2485: return %returnhash;
2486: }
2487:
2488: sub inst_userrules {
2489: my ($udom,$check) = @_;
2490: my (%ruleshash,@ruleorder);
2491: if ($udom ne '') {
2492: my $homeserver=&domain($udom,'primary');
2493: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2494: my $response;
2495: if ($check eq 'id') {
2496: $response=&reply('instidrules:'.&escape($udom),
2497: $homeserver);
2498: } elsif ($check eq 'email') {
2499: $response=&reply('instemailrules:'.&escape($udom),
2500: $homeserver);
2501: } else {
2502: $response=&reply('instuserrules:'.&escape($udom),
2503: $homeserver);
2504: }
2505: if (($response ne 'refused') && ($response ne 'error') &&
2506: ($response ne 'unknown_cmd') &&
2507: ($response ne 'no_such_host')) {
2508: my ($hashitems,$orderitems) = split(/:/,$response);
2509: my @pairs=split(/\&/,$hashitems);
2510: foreach my $item (@pairs) {
2511: my ($key,$value)=split(/=/,$item,2);
2512: $key = &unescape($key);
2513: next if ($key =~ /^error: 2 /);
2514: $ruleshash{$key}=&thaw_unescape($value);
2515: }
2516: my @esc_order = split(/\&/,$orderitems);
2517: foreach my $item (@esc_order) {
2518: push(@ruleorder,&unescape($item));
2519: }
2520: }
2521: }
2522: }
2523: return (\%ruleshash,\@ruleorder);
2524: }
2525:
2526: # ------------- Get Authentication, Language and User Tools Defaults for Domain
2527:
2528: sub get_domain_defaults {
2529: my ($domain,$ignore_cache) = @_;
2530: return if (($domain eq '') || ($domain eq 'public'));
2531: my $cachetime = 60*60*24;
2532: unless ($ignore_cache) {
2533: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
2534: if (defined($cached)) {
2535: if (ref($result) eq 'HASH') {
2536: return %{$result};
2537: }
2538: }
2539: }
2540: my %domdefaults;
2541: my %domconfig =
2542: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
2543: 'requestcourses','inststatus',
2544: 'coursedefaults','usersessions',
2545: 'requestauthor','selfenrollment',
2546: 'coursecategories','ssl','autoenroll',
2547: 'trust','helpsettings'],$domain);
2548: my @coursetypes = ('official','unofficial','community','textbook','placement');
2549: if (ref($domconfig{'defaults'}) eq 'HASH') {
2550: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
2551: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
2552: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
2553: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
2554: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
2555: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
2556: $domdefaults{'intauth_cost'} = $domconfig{'defaults'}{'intauth_cost'};
2557: $domdefaults{'intauth_switch'} = $domconfig{'defaults'}{'intauth_switch'};
2558: $domdefaults{'intauth_check'} = $domconfig{'defaults'}{'intauth_check'};
2559: } else {
2560: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
2561: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
2562: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
2563: }
2564: if (ref($domconfig{'quotas'}) eq 'HASH') {
2565: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
2566: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
2567: } else {
2568: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
2569: }
2570: my @usertools = ('aboutme','blog','webdav','portfolio');
2571: foreach my $item (@usertools) {
2572: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
2573: $domdefaults{$item} = $domconfig{'quotas'}{$item};
2574: }
2575: }
2576: if (ref($domconfig{'quotas'}{'authorquota'}) eq 'HASH') {
2577: $domdefaults{'authorquota'} = $domconfig{'quotas'}{'authorquota'};
2578: }
2579: }
2580: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
2581: foreach my $item ('official','unofficial','community','textbook','placement') {
2582: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
2583: }
2584: }
2585: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
2586: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
2587: }
2588: if (ref($domconfig{'inststatus'}) eq 'HASH') {
2589: foreach my $item ('inststatustypes','inststatusorder','inststatusguest') {
2590: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2591: }
2592: }
2593: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2594: $domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
2595: $domdefaults{'usejsme'} = $domconfig{'coursedefaults'}{'usejsme'};
2596: $domdefaults{'uselcmath'} = $domconfig{'coursedefaults'}{'uselcmath'};
2597: if (ref($domconfig{'coursedefaults'}{'postsubmit'}) eq 'HASH') {
2598: $domdefaults{'postsubmit'} = $domconfig{'coursedefaults'}{'postsubmit'}{'client'};
2599: }
2600: foreach my $type (@coursetypes) {
2601: if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
2602: unless ($type eq 'community') {
2603: $domdefaults{$type.'credits'} = $domconfig{'coursedefaults'}{'coursecredits'}{$type};
2604: }
2605: }
2606: if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
2607: $domdefaults{$type.'quota'} = $domconfig{'coursedefaults'}{'uploadquota'}{$type};
2608: }
2609: if ($domdefaults{'postsubmit'} eq 'on') {
2610: if (ref($domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}) eq 'HASH') {
2611: $domdefaults{$type.'postsubtimeout'} =
2612: $domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}{$type};
2613: }
2614: }
2615: }
2616: if (ref($domconfig{'coursedefaults'}{'canclone'}) eq 'HASH') {
2617: if (ref($domconfig{'coursedefaults'}{'canclone'}{'instcode'}) eq 'ARRAY') {
2618: my @clonecodes = @{$domconfig{'coursedefaults'}{'canclone'}{'instcode'}};
2619: if (@clonecodes) {
2620: $domdefaults{'canclone'} = join('+',@clonecodes);
2621: }
2622: }
2623: } elsif ($domconfig{'coursedefaults'}{'canclone'}) {
2624: $domdefaults{'canclone'}=$domconfig{'coursedefaults'}{'canclone'};
2625: }
2626: if ($domconfig{'coursedefaults'}{'texengine'}) {
2627: $domdefaults{'texengine'} = $domconfig{'coursedefaults'}{'texengine'};
2628: }
2629: }
2630: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2631: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2632: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2633: }
2634: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2635: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2636: }
2637: if (ref($domconfig{'usersessions'}{'offloadnow'}) eq 'HASH') {
2638: $domdefaults{'offloadnow'} = $domconfig{'usersessions'}{'offloadnow'};
2639: }
2640: }
2641: if (ref($domconfig{'selfenrollment'}) eq 'HASH') {
2642: if (ref($domconfig{'selfenrollment'}{'admin'}) eq 'HASH') {
2643: my @settings = ('types','registered','enroll_dates','access_dates','section',
2644: 'approval','limit');
2645: foreach my $type (@coursetypes) {
2646: if (ref($domconfig{'selfenrollment'}{'admin'}{$type}) eq 'HASH') {
2647: my @mgrdc = ();
2648: foreach my $item (@settings) {
2649: if ($domconfig{'selfenrollment'}{'admin'}{$type}{$item} eq '0') {
2650: push(@mgrdc,$item);
2651: }
2652: }
2653: if (@mgrdc) {
2654: $domdefaults{$type.'selfenrolladmdc'} = join(',',@mgrdc);
2655: }
2656: }
2657: }
2658: }
2659: if (ref($domconfig{'selfenrollment'}{'default'}) eq 'HASH') {
2660: foreach my $type (@coursetypes) {
2661: if (ref($domconfig{'selfenrollment'}{'default'}{$type}) eq 'HASH') {
2662: foreach my $item (keys(%{$domconfig{'selfenrollment'}{'default'}{$type}})) {
2663: $domdefaults{$type.'selfenroll'.$item} = $domconfig{'selfenrollment'}{'default'}{$type}{$item};
2664: }
2665: }
2666: }
2667: }
2668: }
2669: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
2670: $domdefaults{'catauth'} = 'std';
2671: $domdefaults{'catunauth'} = 'std';
2672: if ($domconfig{'coursecategories'}{'auth'}) {
2673: $domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};
2674: }
2675: if ($domconfig{'coursecategories'}{'unauth'}) {
2676: $domdefaults{'catunauth'} = $domconfig{'coursecategories'}{'unauth'};
2677: }
2678: }
2679: if (ref($domconfig{'ssl'}) eq 'HASH') {
2680: if (ref($domconfig{'ssl'}{'replication'}) eq 'HASH') {
2681: $domdefaults{'replication'} = $domconfig{'ssl'}{'replication'};
2682: }
2683: if (ref($domconfig{'ssl'}{'connto'}) eq 'HASH') {
2684: $domdefaults{'connect'} = $domconfig{'ssl'}{'connto'};
2685: }
2686: if (ref($domconfig{'ssl'}{'connfrom'}) eq 'HASH') {
2687: $domdefaults{'connect'} = $domconfig{'ssl'}{'connfrom'};
2688: }
2689: }
2690: if (ref($domconfig{'trust'}) eq 'HASH') {
2691: my @prefixes = qw(content shared enroll othcoau coaurem domroles catalog reqcrs msg);
2692: foreach my $prefix (@prefixes) {
2693: if (ref($domconfig{'trust'}{$prefix}) eq 'HASH') {
2694: $domdefaults{'trust'.$prefix} = $domconfig{'trust'}{$prefix};
2695: }
2696: }
2697: }
2698: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
2699: $domdefaults{'autofailsafe'} = $domconfig{'autoenroll'}{'autofailsafe'};
2700: }
2701: if (ref($domconfig{'helpsettings'}) eq 'HASH') {
2702: $domdefaults{'submitbugs'} = $domconfig{'helpsettings'}{'submitbugs'};
2703: if (ref($domconfig{'helpsettings'}{'adhoc'}) eq 'HASH') {
2704: $domdefaults{'adhocroles'} = $domconfig{'helpsettings'}{'adhoc'};
2705: }
2706: }
2707: &do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
2708: return %domdefaults;
2709: }
2710:
2711: sub course_portal_url {
2712: my ($cnum,$cdom) = @_;
2713: my $chome = &homeserver($cnum,$cdom);
2714: my $hostname = &hostname($chome);
2715: my $protocol = $protocol{$chome};
2716: $protocol = 'http' if ($protocol ne 'https');
2717: my %domdefaults = &get_domain_defaults($cdom);
2718: my $firsturl;
2719: if ($domdefaults{'portal_def'}) {
2720: $firsturl = $domdefaults{'portal_def'};
2721: } else {
2722: $firsturl = $protocol.'://'.$hostname;
2723: }
2724: return $firsturl;
2725: }
2726:
2727: # --------------------------------------------- Get domain config for passwords
2728:
2729: sub get_passwdconf {
2730: my ($dom) = @_;
2731: my (%passwdconf,$gotconf,$lookup);
2732: my ($result,$cached)=&is_cached_new('passwdconf',$dom);
2733: if (defined($cached)) {
2734: if (ref($result) eq 'HASH') {
2735: %passwdconf = %{$result};
2736: $gotconf = 1;
2737: }
2738: }
2739: unless ($gotconf) {
2740: my %domconfig = &get_dom('configuration',['passwords'],$dom);
2741: if (ref($domconfig{'passwords'}) eq 'HASH') {
2742: %passwdconf = %{$domconfig{'passwords'}};
2743: }
2744: my $cachetime = 24*60*60;
2745: &do_cache_new('passwdconf',$dom,\%passwdconf,$cachetime);
2746: }
2747: return %passwdconf;
2748: }
2749:
2750: # --------------------------------------------------- Assign a key to a student
2751:
2752: sub assign_access_key {
2753: #
2754: # a valid key looks like uname:udom#comments
2755: # comments are being appended
2756: #
2757: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2758: $kdom=
2759: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2760: $knum=
2761: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2762: $cdom=
2763: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2764: $cnum=
2765: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2766: $udom=$env{'user.name'} unless (defined($udom));
2767: $uname=$env{'user.domain'} unless (defined($uname));
2768: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2769: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2770: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2771: # assigned to this person
2772: # - this should not happen,
2773: # unless something went wrong
2774: # the first time around
2775: # ready to assign
2776: $logentry=$1.'; '.$logentry;
2777: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2778: $kdom,$knum) eq 'ok') {
2779: # key now belongs to user
2780: my $envkey='key.'.$cdom.'_'.$cnum;
2781: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2782: &appenv({'environment.'.$envkey => $ckey});
2783: return 'ok';
2784: } else {
2785: return
2786: 'error: Count not permanently assign key, will need to be re-entered later.';
2787: }
2788: } else {
2789: return 'error: Could not assign key, try again later.';
2790: }
2791: } elsif (!$existing{$ckey}) {
2792: # the key does not exist
2793: return 'error: The key does not exist';
2794: } else {
2795: # the key is somebody else's
2796: return 'error: The key is already in use';
2797: }
2798: }
2799:
2800: # ------------------------------------------ put an additional comment on a key
2801:
2802: sub comment_access_key {
2803: #
2804: # a valid key looks like uname:udom#comments
2805: # comments are being appended
2806: #
2807: my ($ckey,$cdom,$cnum,$logentry)=@_;
2808: $cdom=
2809: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2810: $cnum=
2811: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2812: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2813: if ($existing{$ckey}) {
2814: $existing{$ckey}.='; '.$logentry;
2815: # ready to assign
2816: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2817: $cdom,$cnum) eq 'ok') {
2818: return 'ok';
2819: } else {
2820: return 'error: Count not store comment.';
2821: }
2822: } else {
2823: # the key does not exist
2824: return 'error: The key does not exist';
2825: }
2826: }
2827:
2828: # ------------------------------------------------------ Generate a set of keys
2829:
2830: sub generate_access_keys {
2831: my ($number,$cdom,$cnum,$logentry)=@_;
2832: $cdom=
2833: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2834: $cnum=
2835: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2836: unless (&allowed('mky',$cdom)) { return 0; }
2837: unless (($cdom) && ($cnum)) { return 0; }
2838: if ($number>10000) { return 0; }
2839: sleep(2); # make sure don't get same seed twice
2840: srand(time()^($$+($$<<15))); # from "Programming Perl"
2841: my $total=0;
2842: for (my $i=1;$i<=$number;$i++) {
2843: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2844: sprintf("%lx",int(100000*rand)).'-'.
2845: sprintf("%lx",int(100000*rand));
2846: $newkey=~s/1/g/g; # folks mix up 1 and l
2847: $newkey=~s/0/h/g; # and also 0 and O
2848: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2849: if ($existing{$newkey}) {
2850: $i--;
2851: } else {
2852: if (&put('accesskeys',
2853: { $newkey => '# generated '.localtime().
2854: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2855: '; '.$logentry },
2856: $cdom,$cnum) eq 'ok') {
2857: $total++;
2858: }
2859: }
2860: }
2861: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2862: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2863: return $total;
2864: }
2865:
2866: # ------------------------------------------------------- Validate an accesskey
2867:
2868: sub validate_access_key {
2869: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2870: $cdom=
2871: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2872: $cnum=
2873: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2874: $udom=$env{'user.domain'} unless (defined($udom));
2875: $uname=$env{'user.name'} unless (defined($uname));
2876: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2877: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2878: }
2879:
2880: # ------------------------------------- Find the section of student in a course
2881: sub devalidate_getsection_cache {
2882: my ($udom,$unam,$courseid)=@_;
2883: my $hashid="$udom:$unam:$courseid";
2884: &devalidate_cache_new('getsection',$hashid);
2885: }
2886:
2887: sub courseid_to_courseurl {
2888: my ($courseid) = @_;
2889: #already url style courseid
2890: return $courseid if ($courseid =~ m{^/});
2891:
2892: if (exists($env{'course.'.$courseid.'.num'})) {
2893: my $cnum = $env{'course.'.$courseid.'.num'};
2894: my $cdom = $env{'course.'.$courseid.'.domain'};
2895: return "/$cdom/$cnum";
2896: }
2897:
2898: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2899: if (exists($courseinfo{'num'})) {
2900: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2901: }
2902:
2903: return undef;
2904: }
2905:
2906: sub getsection {
2907: my ($udom,$unam,$courseid)=@_;
2908: my $cachetime=1800;
2909:
2910: my $hashid="$udom:$unam:$courseid";
2911: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2912: if (defined($cached)) { return $result; }
2913:
2914: my %Pending;
2915: my %Expired;
2916: #
2917: # Each role can either have not started yet (pending), be active,
2918: # or have expired.
2919: #
2920: # If there is an active role, we are done.
2921: #
2922: # If there is more than one role which has not started yet,
2923: # choose the one which will start sooner
2924: # If there is one role which has not started yet, return it.
2925: #
2926: # If there is more than one expired role, choose the one which ended last.
2927: # If there is a role which has expired, return it.
2928: #
2929: $courseid = &courseid_to_courseurl($courseid);
2930: my %roleshash = &dump('roles',$udom,$unam,$courseid);
2931: foreach my $key (keys(%roleshash)) {
2932: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2933: my $section=$1;
2934: if ($key eq $courseid.'_st') { $section=''; }
2935: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2936: my $now=time;
2937: if (defined($end) && $end && ($now > $end)) {
2938: $Expired{$end}=$section;
2939: next;
2940: }
2941: if (defined($start) && $start && ($now < $start)) {
2942: $Pending{$start}=$section;
2943: next;
2944: }
2945: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2946: }
2947: #
2948: # Presumedly there will be few matching roles from the above
2949: # loop and the sorting time will be negligible.
2950: if (scalar(keys(%Pending))) {
2951: my ($time) = sort {$a <=> $b} keys(%Pending);
2952: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2953: }
2954: if (scalar(keys(%Expired))) {
2955: my @sorted = sort {$a <=> $b} keys(%Expired);
2956: my $time = pop(@sorted);
2957: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2958: }
2959: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2960: }
2961:
2962: sub save_cache {
2963: &purge_remembered();
2964: #&Apache::loncommon::validate_page();
2965: undef(%env);
2966: undef($env_loaded);
2967: }
2968:
2969: my $to_remember=-1;
2970: my %remembered;
2971: my %accessed;
2972: my $kicks=0;
2973: my $hits=0;
2974: sub make_key {
2975: my ($name,$id) = @_;
2976: if (length($id) > 65
2977: && length(&escape($id)) > 200) {
2978: $id=length($id).':'.&Digest::MD5::md5_hex($id);
2979: }
2980: return &escape($name.':'.$id);
2981: }
2982:
2983: sub devalidate_cache_new {
2984: my ($name,$id,$debug) = @_;
2985: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
2986: my $remembered_id=$name.':'.$id;
2987: $id=&make_key($name,$id);
2988: $memcache->delete($id);
2989: delete($remembered{$remembered_id});
2990: delete($accessed{$remembered_id});
2991: }
2992:
2993: sub is_cached_new {
2994: my ($name,$id,$debug) = @_;
2995: my $remembered_id=$name.':'.$id; # this is to avoid make_key (which is slow) whenever possible
2996: if (exists($remembered{$remembered_id})) {
2997: if ($debug) { &Apache::lonnet::logthis("Early return $remembered_id of $remembered{$remembered_id} "); }
2998: $accessed{$remembered_id}=[&gettimeofday()];
2999: $hits++;
3000: return ($remembered{$remembered_id},1);
3001: }
3002: $id=&make_key($name,$id);
3003: my $value = $memcache->get($id);
3004: if (!(defined($value))) {
3005: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
3006: return (undef,undef);
3007: }
3008: if ($value eq '__undef__') {
3009: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
3010: $value=undef;
3011: }
3012: &make_room($remembered_id,$value,$debug);
3013: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
3014: return ($value,1);
3015: }
3016:
3017: sub do_cache_new {
3018: my ($name,$id,$value,$time,$debug) = @_;
3019: my $remembered_id=$name.':'.$id;
3020: $id=&make_key($name,$id);
3021: my $setvalue=$value;
3022: if (!defined($setvalue)) {
3023: $setvalue='__undef__';
3024: }
3025: if (!defined($time) ) {
3026: $time=600;
3027: }
3028: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
3029: my $result = $memcache->set($id,$setvalue,$time);
3030: if (! $result) {
3031: &logthis("caching of id -> $id failed");
3032: $memcache->disconnect_all();
3033: }
3034: # need to make a copy of $value
3035: &make_room($remembered_id,$value,$debug);
3036: return $value;
3037: }
3038:
3039: sub make_room {
3040: my ($remembered_id,$value,$debug)=@_;
3041:
3042: $remembered{$remembered_id}= (ref($value)) ? &Storable::dclone($value)
3043: : $value;
3044: if ($to_remember<0) { return; }
3045: $accessed{$remembered_id}=[&gettimeofday()];
3046: if (scalar(keys(%remembered)) <= $to_remember) { return; }
3047: my $to_kick;
3048: my $max_time=0;
3049: foreach my $other (keys(%accessed)) {
3050: if (&tv_interval($accessed{$other}) > $max_time) {
3051: $to_kick=$other;
3052: $max_time=&tv_interval($accessed{$other});
3053: }
3054: }
3055: delete($remembered{$to_kick});
3056: delete($accessed{$to_kick});
3057: $kicks++;
3058: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
3059: return;
3060: }
3061:
3062: sub purge_remembered {
3063: #&logthis("Tossing ".scalar(keys(%remembered)));
3064: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
3065: undef(%remembered);
3066: undef(%accessed);
3067: }
3068: # ------------------------------------- Read an entry from a user's environment
3069:
3070: sub userenvironment {
3071: my ($udom,$unam,@what)=@_;
3072: my $items;
3073: foreach my $item (@what) {
3074: $items.=&escape($item).'&';
3075: }
3076: $items=~s/\&$//;
3077: my %returnhash=();
3078: my $uhome = &homeserver($unam,$udom);
3079: unless ($uhome eq 'no_host') {
3080: my @answer=split(/\&/,
3081: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
3082: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
3083: return %returnhash;
3084: }
3085: my $i;
3086: for ($i=0;$i<=$#what;$i++) {
3087: $returnhash{$what[$i]}=&unescape($answer[$i]);
3088: }
3089: }
3090: return %returnhash;
3091: }
3092:
3093: # ---------------------------------------------------------- Get a studentphoto
3094: sub studentphoto {
3095: my ($udom,$unam,$ext) = @_;
3096: my $home=&Apache::lonnet::homeserver($unam,$udom);
3097: if (defined($env{'request.course.id'})) {
3098: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
3099: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
3100: return(&retrievestudentphoto($udom,$unam,$ext));
3101: } else {
3102: my ($result,$perm_reqd)=
3103: &Apache::lonnet::auto_photo_permission($unam,$udom);
3104: if ($result eq 'ok') {
3105: if (!($perm_reqd eq 'yes')) {
3106: return(&retrievestudentphoto($udom,$unam,$ext));
3107: }
3108: }
3109: }
3110: }
3111: } else {
3112: my ($result,$perm_reqd) =
3113: &Apache::lonnet::auto_photo_permission($unam,$udom);
3114: if ($result eq 'ok') {
3115: if (!($perm_reqd eq 'yes')) {
3116: return(&retrievestudentphoto($udom,$unam,$ext));
3117: }
3118: }
3119: }
3120: return '/adm/lonKaputt/lonlogo_broken.gif';
3121: }
3122:
3123: sub retrievestudentphoto {
3124: my ($udom,$unam,$ext,$type) = @_;
3125: my $home=&Apache::lonnet::homeserver($unam,$udom);
3126: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
3127: if ($ret eq 'ok') {
3128: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
3129: if ($type eq 'thumbnail') {
3130: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
3131: }
3132: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
3133: return $tokenurl;
3134: } else {
3135: if ($type eq 'thumbnail') {
3136: return '/adm/lonKaputt/genericstudent_tn.gif';
3137: } else {
3138: return '/adm/lonKaputt/lonlogo_broken.gif';
3139: }
3140: }
3141: }
3142:
3143: # -------------------------------------------------------------------- New chat
3144:
3145: sub chatsend {
3146: my ($newentry,$anon,$group)=@_;
3147: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
3148: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3149: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
3150: &reply('chatsend:'.$cdom.':'.$cnum.':'.
3151: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
3152: &escape($newentry)).':'.$group,$chome);
3153: }
3154:
3155: # ------------------------------------------ Find current version of a resource
3156:
3157: sub getversion {
3158: my $fname=&clutter(shift);
3159: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
3160: return ¤tversion(&filelocation('',$fname));
3161: }
3162:
3163: sub currentversion {
3164: my $fname=shift;
3165: my $author=$fname;
3166: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3167: my ($udom,$uname)=split(/\//,$author);
3168: my $home=&homeserver($uname,$udom);
3169: if ($home eq 'no_host') {
3170: return -1;
3171: }
3172: my $answer=&reply("currentversion:$fname",$home);
3173: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3174: return -1;
3175: }
3176: return $answer;
3177: }
3178:
3179: #
3180: # Return special version number of resource if set by override, empty otherwise
3181: #
3182: sub usedversion {
3183: my $fname=shift;
3184: unless ($fname) { $fname=$env{'request.uri'}; }
3185: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
3186: if ($urlversion) { return $urlversion; }
3187: return '';
3188: }
3189:
3190: # ----------------------------- Subscribe to a resource, return URL if possible
3191:
3192: sub subscribe {
3193: my $fname=shift;
3194: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
3195: $fname=~s/[\n\r]//g;
3196: my $author=$fname;
3197: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3198: my ($udom,$uname)=split(/\//,$author);
3199: my $home=homeserver($uname,$udom);
3200: if ($home eq 'no_host') {
3201: return 'not_found';
3202: }
3203: my $answer=reply("sub:$fname",$home);
3204: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3205: $answer.=' by '.$home;
3206: }
3207: return $answer;
3208: }
3209:
3210: # -------------------------------------------------------------- Replicate file
3211:
3212: sub repcopy {
3213: my $filename=shift;
3214: $filename=~s/\/+/\//g;
3215: my $londocroot = $perlvar{'lonDocRoot'};
3216: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
3217: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
3218: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
3219: $filename=~m{^/*(uploaded|editupload)/}) {
3220: return &repcopy_userfile($filename);
3221: }
3222: $filename=~s/[\n\r]//g;
3223: my $transname="$filename.in.transfer";
3224: # FIXME: this should flock
3225: if ((-e $filename) || (-e $transname)) { return 'ok'; }
3226: my $remoteurl=subscribe($filename);
3227: if ($remoteurl =~ /^con_lost by/) {
3228: &logthis("Subscribe returned $remoteurl: $filename");
3229: return 'unavailable';
3230: } elsif ($remoteurl eq 'not_found') {
3231: #&logthis("Subscribe returned not_found: $filename");
3232: return 'not_found';
3233: } elsif ($remoteurl =~ /^rejected by/) {
3234: &logthis("Subscribe returned $remoteurl: $filename");
3235: return 'forbidden';
3236: } elsif ($remoteurl eq 'directory') {
3237: return 'ok';
3238: } else {
3239: my $author=$filename;
3240: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3241: my ($udom,$uname)=split(/\//,$author);
3242: my $home=homeserver($uname,$udom);
3243: unless ($home eq $perlvar{'lonHostID'}) {
3244: my @parts=split(/\//,$filename);
3245: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
3246: if ($path ne "$londocroot/res") {
3247: &logthis("Malconfiguration for replication: $filename");
3248: return 'bad_request';
3249: }
3250: my $count;
3251: for ($count=5;$count<$#parts;$count++) {
3252: $path.="/$parts[$count]";
3253: if ((-e $path)!=1) {
3254: mkdir($path,0777);
3255: }
3256: }
3257: my $request=new HTTP::Request('GET',"$remoteurl");
3258: my $response;
3259: if ($remoteurl =~ m{/raw/}) {
3260: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',0,1);
3261: } else {
3262: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',1);
3263: }
3264: if ($response->is_error()) {
3265: unlink($transname);
3266: my $message=$response->status_line;
3267: &logthis("<font color=\"blue\">WARNING:"
3268: ." LWP get: $message: $filename</font>");
3269: return 'unavailable';
3270: } else {
3271: if ($remoteurl!~/\.meta$/) {
3272: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
3273: my $mresponse;
3274: if ($remoteurl =~ m{/raw/}) {
3275: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',0,1);
3276: } else {
3277: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',1);
3278: }
3279: if ($mresponse->is_error()) {
3280: unlink($filename.'.meta');
3281: &logthis(
3282: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
3283: }
3284: }
3285: rename($transname,$filename);
3286: return 'ok';
3287: }
3288: }
3289: }
3290: }
3291:
3292: # ------------------------------------------------ Get server side include body
3293: sub ssi_body {
3294: my ($filelink,%form)=@_;
3295: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
3296: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
3297: }
3298: my $output='';
3299: my $response;
3300: if ($filelink=~/^https?\:/) {
3301: ($output,$response)=&externalssi($filelink);
3302: } else {
3303: $filelink .= $filelink=~/\?/ ? '&' : '?';
3304: $filelink .= 'inhibitmenu=yes';
3305: ($output,$response)=&ssi($filelink,%form);
3306: }
3307: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
3308: $output=~s/^.*?\<body[^\>]*\>//si;
3309: $output=~s/\<\/body\s*\>.*?$//si;
3310: if (wantarray) {
3311: return ($output, $response);
3312: } else {
3313: return $output;
3314: }
3315: }
3316:
3317: # --------------------------------------------------------- Server Side Include
3318:
3319: sub absolute_url {
3320: my ($host_name) = @_;
3321: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
3322: if ($host_name eq '') {
3323: $host_name = $ENV{'SERVER_NAME'};
3324: }
3325: return $protocol.$host_name;
3326: }
3327:
3328: #
3329: # Server side include.
3330: # Parameters:
3331: # fn Possibly encrypted resource name/id.
3332: # form Hash that describes how the rendering should be done
3333: # and other things.
3334: # Returns:
3335: # Scalar context: The content of the response.
3336: # Array context: 2 element list of the content and the full response object.
3337: #
3338: sub ssi {
3339:
3340: my ($fn,%form)=@_;
3341: my $request;
3342:
3343: $form{'no_update_last_known'}=1;
3344: &Apache::lonenc::check_encrypt(\$fn);
3345: if (%form) {
3346: $request=new HTTP::Request('POST',&absolute_url().$fn);
3347: $request->content(join('&',map {
3348: my $name = escape($_);
3349: "$name=" . ( ref($form{$_}) eq 'ARRAY'
3350: ? join("&$name=", map {escape($_) } @{$form{$_}})
3351: : &escape($form{$_}) );
3352: } keys(%form)));
3353: } else {
3354: $request=new HTTP::Request('GET',&absolute_url().$fn);
3355: }
3356:
3357: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
3358: my $lonhost = $perlvar{'lonHostID'};
3359: my $islocal;
3360: if (($env{'request.course.id'}) &&
3361: ($form{'grade_courseid'} eq $env{'request.course.id'}) &&
3362: ($form{'grade_username'} ne '') && ($form{'grade_domain'} ne '') &&
3363: ($form{'grade_symb'} ne '') &&
3364: (&Apache::lonnet::allowed('mgr',$env{'request.course.id'}.
3365: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:'')))) {
3366: $islocal = 1;
3367: }
3368: my $response= &LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,
3369: '','','',$islocal);
3370:
3371: if (wantarray) {
3372: return ($response->content, $response);
3373: } else {
3374: return $response->content;
3375: }
3376: }
3377:
3378: sub externalssi {
3379: my ($url)=@_;
3380: my $request=new HTTP::Request('GET',$url);
3381: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar);
3382: if (wantarray) {
3383: return ($response->content, $response);
3384: } else {
3385: return $response->content;
3386: }
3387: }
3388:
3389:
3390: # If the local copy of a replicated resource is outdated, trigger a
3391: # connection from the homeserver to flush the delayed queue. If no update
3392: # happens, remove local copies of outdated resource (and corresponding
3393: # metadata file).
3394:
3395: sub remove_stale_resfile {
3396: my ($url) = @_;
3397: my $removed;
3398: if ($url=~m{^/res/($match_domain)/($match_username)/}) {
3399: my $audom = $1;
3400: my $auname = $2;
3401: unless (($url =~ /\.\d+\.\w+$/) || ($url =~ m{^/res/lib/templates/})) {
3402: my $homeserver = &homeserver($auname,$audom);
3403: unless (($homeserver eq 'no_host') ||
3404: (grep { $_ eq $homeserver } ¤t_machine_ids())) {
3405: my $fname = &filelocation('',$url);
3406: if (-e $fname) {
3407: my $hostname = &hostname($homeserver);
3408: if ($hostname) {
3409: my $protocol = $protocol{$homeserver};
3410: $protocol = 'http' if ($protocol ne 'https');
3411: my $uri = &declutter($url);
3412: my $request=new HTTP::Request('HEAD',$protocol.'://'.$hostname.'/raw/'.$uri);
3413: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,5,0,1);
3414: if ($response->is_success()) {
3415: my $remmodtime = &HTTP::Date::str2time( $response->header('Last-modified') );
3416: my $locmodtime = (stat($fname))[9];
3417: if ($locmodtime < $remmodtime) {
3418: my $stale;
3419: my $answer = &reply('pong',$homeserver);
3420: if ($answer eq $homeserver.':'.$perlvar{'lonHostID'}) {
3421: sleep(0.2);
3422: $locmodtime = (stat($fname))[9];
3423: if ($locmodtime < $remmodtime) {
3424: my $posstransfer = $fname.'.in.transfer';
3425: if ((-e $posstransfer) && ($remmodtime < (stat($posstransfer))[9])) {
3426: $removed = 1;
3427: } else {
3428: $stale = 1;
3429: }
3430: } else {
3431: $removed = 1;
3432: }
3433: } else {
3434: $stale = 1;
3435: }
3436: if ($stale) {
3437: unlink($fname);
3438: if ($uri!~/\.meta$/) {
3439: unlink($fname.'.meta');
3440: }
3441: &reply("unsub:$fname",$homeserver);
3442: $removed = 1;
3443: }
3444: }
3445: }
3446: }
3447: }
3448: }
3449: }
3450: }
3451: return $removed;
3452: }
3453:
3454: # -------------------------------- Allow a /uploaded/ URI to be vouched for
3455:
3456: sub allowuploaded {
3457: my ($srcurl,$url)=@_;
3458: $url=&clutter(&declutter($url));
3459: my $dir=$url;
3460: $dir=~s/\/[^\/]+$//;
3461: my %httpref=();
3462: my $httpurl=&hreflocation('',$url);
3463: $httpref{'httpref.'.$httpurl}=$srcurl;
3464: &Apache::lonnet::appenv(\%httpref);
3465: }
3466:
3467: #
3468: # Determine if the current user should be able to edit a particular resource,
3469: # when viewing in course context.
3470: # (a) When viewing resource used to determine if "Edit" item is included in
3471: # Functions.
3472: # (b) When displaying folder contents in course editor, used to determine if
3473: # "Edit" link will be displayed alongside resource.
3474: #
3475: # input: six args -- filename (decluttered), course number, course domain,
3476: # url, symb (if registered) and group (if this is a group
3477: # item -- e.g., bulletin board, group page etc.).
3478: # output: array of five scalars --
3479: # $cfile -- url for file editing if editable on current server
3480: # $home -- homeserver of resource (i.e., for author if published,
3481: # or course if uploaded.).
3482: # $switchserver -- 1 if server switch will be needed.
3483: # $forceedit -- 1 if icon/link should be to go to edit mode
3484: # $forceview -- 1 if icon/link should be to go to view mode
3485: #
3486:
3487: sub can_edit_resource {
3488: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
3489: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
3490: #
3491: # For aboutme pages user can only edit his/her own.
3492: #
3493: if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
3494: my ($sdom,$sname) = ($1,$2);
3495: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
3496: $home = $env{'user.home'};
3497: $cfile = $resurl;
3498: if ($env{'form.forceedit'}) {
3499: $forceview = 1;
3500: } else {
3501: $forceedit = 1;
3502: }
3503: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3504: } else {
3505: return;
3506: }
3507: }
3508:
3509: if ($env{'request.course.id'}) {
3510: my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
3511: if ($group ne '') {
3512: # if this is a group homepage or group bulletin board, check group privs
3513: my $allowed = 0;
3514: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
3515: if ((&allowed('mdg',$env{'request.course.id'}.
3516: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3517: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3518: $allowed = 1;
3519: }
3520: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
3521: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3522: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3523: $allowed = 1;
3524: }
3525: }
3526: if ($allowed) {
3527: $home=&homeserver($cnum,$cdom);
3528: if ($env{'form.forceedit'}) {
3529: $forceview = 1;
3530: } else {
3531: $forceedit = 1;
3532: }
3533: $cfile = $resurl;
3534: } else {
3535: return;
3536: }
3537: } else {
3538: if ($resurl =~ m{^/?adm/viewclasslist$}) {
3539: unless (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
3540: return;
3541: }
3542: } elsif (!$crsedit) {
3543: #
3544: # No edit allowed where CC has switched to student role.
3545: #
3546: return;
3547: }
3548: }
3549: }
3550:
3551: if ($file ne '') {
3552: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
3553: if (&is_course_upload($file,$cnum,$cdom)) {
3554: $uploaded = 1;
3555: $incourse = 1;
3556: if ($file =~/\.(htm|html|css|js|txt)$/) {
3557: $cfile = &hreflocation('',$file);
3558: if ($env{'form.forceedit'}) {
3559: $forceview = 1;
3560: } else {
3561: $forceedit = 1;
3562: }
3563: }
3564: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
3565: $incourse = 1;
3566: if ($env{'form.forceedit'}) {
3567: $forceview = 1;
3568: } else {
3569: $forceedit = 1;
3570: }
3571: $cfile = $resurl;
3572: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
3573: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
3574: $incourse = 1;
3575: if ($env{'form.forceedit'}) {
3576: $forceview = 1;
3577: } else {
3578: $forceedit = 1;
3579: }
3580: $cfile = $resurl;
3581: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem') {
3582: $incourse = 1;
3583: $cfile = $resurl.'/smpedit';
3584: } elsif ($resurl =~ m{^/adm/wrapper/ext/}) {
3585: $incourse = 1;
3586: if ($env{'form.forceedit'}) {
3587: $forceview = 1;
3588: } else {
3589: $forceedit = 1;
3590: }
3591: $cfile = $resurl;
3592: } elsif ($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3593: $incourse = 1;
3594: if ($env{'form.forceedit'}) {
3595: $forceview = 1;
3596: } else {
3597: $forceedit = 1;
3598: }
3599: $cfile = $resurl;
3600: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3601: $incourse = 1;
3602: if ($env{'form.forceedit'}) {
3603: $forceview = 1;
3604: } else {
3605: $forceedit = 1;
3606: }
3607: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3608: }
3609: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
3610: my $template = '/res/lib/templates/simpleproblem.problem';
3611: if (&is_on_map($template)) {
3612: $incourse = 1;
3613: $forceview = 1;
3614: $cfile = $template;
3615: }
3616: } elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3617: $incourse = 1;
3618: if ($env{'form.forceedit'}) {
3619: $forceview = 1;
3620: } else {
3621: $forceedit = 1;
3622: }
3623: $cfile = $resurl;
3624: } elsif (($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3625: $incourse = 1;
3626: if ($env{'form.forceedit'}) {
3627: $forceview = 1;
3628: } else {
3629: $forceedit = 1;
3630: }
3631: $cfile = $resurl;
3632: } elsif (($resurl eq '/adm/extresedit') && ($symb || $env{'form.folderpath'})) {
3633: $incourse = 1;
3634: $forceview = 1;
3635: if ($symb) {
3636: my ($map,$id,$res)=&decode_symb($symb);
3637: $env{'request.symb'} = $symb;
3638: $cfile = &clutter($res);
3639: } else {
3640: $cfile = $env{'form.suppurl'};
3641: my $escfile = &unescape($cfile);
3642: if ($escfile =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3643: $cfile = '/adm/wrapper'.$escfile;
3644: } else {
3645: $escfile =~ s{^http://}{};
3646: $cfile = &escape("/adm/wrapper/ext/$escfile");
3647: }
3648: }
3649: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3650: if ($env{'form.forceedit'}) {
3651: $forceview = 1;
3652: } else {
3653: $forceedit = 1;
3654: }
3655: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3656: }
3657: }
3658: if ($uploaded || $incourse) {
3659: $home=&homeserver($cnum,$cdom);
3660: } elsif ($file !~ m{/$}) {
3661: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
3662: $file=~s{^($match_domain/$match_username)}{/priv/$1};
3663: # Check that the user has permission to edit this resource
3664: my $setpriv = 1;
3665: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
3666: if (defined($cfudom)) {
3667: $home=&homeserver($cfuname,$cfudom);
3668: $cfile=$file;
3669: }
3670: }
3671: if (($cfile ne '') && (!$incourse || $uploaded) &&
3672: (($home ne '') && ($home ne 'no_host'))) {
3673: my @ids=¤t_machine_ids();
3674: unless (grep(/^\Q$home\E$/,@ids)) {
3675: $switchserver=1;
3676: }
3677: }
3678: }
3679: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3680: }
3681:
3682: sub is_course_upload {
3683: my ($file,$cnum,$cdom) = @_;
3684: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
3685: $uploadpath =~ s{^\/}{};
3686: if (($file =~ m{^\Q$uploadpath\E/userfiles/(docs|supplemental)/}) ||
3687: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/})) {
3688: return 1;
3689: }
3690: return;
3691: }
3692:
3693: sub in_course {
3694: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
3695: if ($hideprivileged) {
3696: my $skipuser;
3697: my %coursehash = &coursedescription($cdom.'_'.$cnum);
3698: my @possdoms = ($cdom);
3699: if ($coursehash{'checkforpriv'}) {
3700: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
3701: }
3702: if (&privileged($uname,$udom,\@possdoms)) {
3703: $skipuser = 1;
3704: if ($coursehash{'nothideprivileged'}) {
3705: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3706: my $user;
3707: if ($item =~ /:/) {
3708: $user = $item;
3709: } else {
3710: $user = join(':',split(/[\@]/,$item));
3711: }
3712: if ($user eq $uname.':'.$udom) {
3713: undef($skipuser);
3714: last;
3715: }
3716: }
3717: }
3718: if ($skipuser) {
3719: return 0;
3720: }
3721: }
3722: }
3723: $type ||= 'any';
3724: if (!defined($cdom) || !defined($cnum)) {
3725: my $cid = $env{'request.course.id'};
3726: $cdom = $env{'course.'.$cid.'.domain'};
3727: $cnum = $env{'course.'.$cid.'.num'};
3728: }
3729: my $typesref;
3730: if (($type eq 'any') || ($type eq 'all')) {
3731: $typesref = ['active','previous','future'];
3732: } elsif ($type eq 'previous' || $type eq 'future') {
3733: $typesref = [$type];
3734: }
3735: my %roles = &get_my_roles($uname,$udom,'userroles',
3736: $typesref,undef,[$cdom]);
3737: my ($tmp) = keys(%roles);
3738: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
3739: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
3740: if (@course_roles > 0) {
3741: return 1;
3742: }
3743: return 0;
3744: }
3745:
3746: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
3747: # input: action, courseID, current domain, intended
3748: # path to file, source of file, instruction to parse file for objects,
3749: # ref to hash for embedded objects,
3750: # ref to hash for codebase of java objects.
3751: # reference to scalar to accommodate mime type determined
3752: # from File::MMagic if $parser = parse.
3753: #
3754: # output: url to file (if action was uploaddoc),
3755: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
3756: #
3757: # Allows directory structure to be used within lonUsers/../userfiles/ for a
3758: # course.
3759: #
3760: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3761: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
3762: # course's home server.
3763: #
3764: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
3765: # be copied from $source (current location) to
3766: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3767: # and will then be copied to
3768: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
3769: # course's home server.
3770: #
3771: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3772: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
3773: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3774: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
3775: # in course's home server.
3776: #
3777:
3778: sub process_coursefile {
3779: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
3780: $mimetype)=@_;
3781: my $fetchresult;
3782: my $home=&homeserver($docuname,$docudom);
3783: if ($action eq 'propagate') {
3784: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3785: $home);
3786: } else {
3787: my $fpath = '';
3788: my $fname = $file;
3789: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3790: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3791: my $filepath = &build_filepath($fpath);
3792: if ($action eq 'copy') {
3793: if ($source eq '') {
3794: $fetchresult = 'no source file';
3795: return $fetchresult;
3796: } else {
3797: my $destination = $filepath.'/'.$fname;
3798: rename($source,$destination);
3799: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3800: $home);
3801: }
3802: } elsif ($action eq 'uploaddoc') {
3803: open(my $fh,'>',$filepath.'/'.$fname);
3804: print $fh $env{'form.'.$source};
3805: close($fh);
3806: if ($parser eq 'parse') {
3807: my $mm = new File::MMagic;
3808: my $type = $mm->checktype_filename($filepath.'/'.$fname);
3809: if ($type eq 'text/html') {
3810: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
3811: unless ($parse_result eq 'ok') {
3812: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
3813: }
3814: }
3815: if (ref($mimetype)) {
3816: $$mimetype = $type;
3817: }
3818: }
3819: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3820: $home);
3821: if ($fetchresult eq 'ok') {
3822: return '/uploaded/'.$fpath.'/'.$fname;
3823: } else {
3824: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3825: ' to host '.$home.': '.$fetchresult);
3826: return '/adm/notfound.html';
3827: }
3828: }
3829: }
3830: unless ( $fetchresult eq 'ok') {
3831: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3832: ' to host '.$home.': '.$fetchresult);
3833: }
3834: return $fetchresult;
3835: }
3836:
3837: sub build_filepath {
3838: my ($fpath) = @_;
3839: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
3840: unless ($fpath eq '') {
3841: my @parts=split('/',$fpath);
3842: foreach my $part (@parts) {
3843: $filepath.= '/'.$part;
3844: if ((-e $filepath)!=1) {
3845: mkdir($filepath,0777);
3846: }
3847: }
3848: }
3849: return $filepath;
3850: }
3851:
3852: sub store_edited_file {
3853: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
3854: my $file = $primary_url;
3855: $file =~ s#^/uploaded/$docudom/$docuname/##;
3856: my $fpath = '';
3857: my $fname = $file;
3858: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3859: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3860: my $filepath = &build_filepath($fpath);
3861: open(my $fh,'>',$filepath.'/'.$fname);
3862: print $fh $content;
3863: close($fh);
3864: my $home=&homeserver($docuname,$docudom);
3865: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3866: $home);
3867: if ($$fetchresult eq 'ok') {
3868: return '/uploaded/'.$fpath.'/'.$fname;
3869: } else {
3870: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3871: ' to host '.$home.': '.$$fetchresult);
3872: return '/adm/notfound.html';
3873: }
3874: }
3875:
3876: sub clean_filename {
3877: my ($fname,$args)=@_;
3878: # Replace Windows backslashes by forward slashes
3879: $fname=~s/\\/\//g;
3880: if (!$args->{'keep_path'}) {
3881: # Get rid of everything but the actual filename
3882: $fname=~s/^.*\/([^\/]+)$/$1/;
3883: }
3884: # Replace spaces by underscores
3885: $fname=~s/\s+/\_/g;
3886: # Transliterate non-ascii text to ascii
3887: my $lang = &Apache::lonlocal::current_language();
3888: $fname = &LONCAPA::transliterate::fname_to_ascii($fname,$lang);
3889: # Replace all other weird characters by nothing
3890: $fname=~s{[^/\w\.\-]}{}g;
3891: # Replace all .\d. sequences with _\d. so they no longer look like version
3892: # numbers
3893: $fname=~s/\.(\d+)(?=\.)/_$1/g;
3894: return $fname;
3895: }
3896:
3897: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
3898: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
3899: # image with the same aspect ratio as the original, but with dimensions which do
3900: # not exceed $resizewidth and $resizeheight.
3901:
3902: sub resizeImage {
3903: my ($img_path,$resizewidth,$resizeheight) = @_;
3904: my $ima = Image::Magick->new;
3905: my $resized;
3906: if (-e $img_path) {
3907: $ima->Read($img_path);
3908: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
3909: my $width = $ima->Get('width');
3910: my $height = $ima->Get('height');
3911: if ($width > $resizewidth) {
3912: my $factor = $width/$resizewidth;
3913: my $newheight = $height/$factor;
3914: $ima->Scale(width=>$resizewidth,height=>$newheight);
3915: $resized = 1;
3916: }
3917: }
3918: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
3919: my $width = $ima->Get('width');
3920: my $height = $ima->Get('height');
3921: if ($height > $resizeheight) {
3922: my $factor = $height/$resizeheight;
3923: my $newwidth = $width/$factor;
3924: $ima->Scale(width=>$newwidth,height=>$resizeheight);
3925: $resized = 1;
3926: }
3927: }
3928: if ($resized) {
3929: $ima->Write($img_path);
3930: }
3931: }
3932: return;
3933: }
3934:
3935: # --------------- Take an uploaded file and put it into the userfiles directory
3936: # input: $formname - the contents of the file are in $env{"form.$formname"}
3937: # the desired filename is in $env{"form.$formname.filename"}
3938: # $context - possible values: coursedoc, existingfile, overwrite,
3939: # canceloverwrite, scantron or ''.
3940: # if 'coursedoc': upload to the current course
3941: # if 'existingfile': write file to tmp/overwrites directory
3942: # if 'canceloverwrite': delete file written to tmp/overwrites directory
3943: # $context is passed as argument to &finishuserfileupload
3944: # $subdir - directory in userfile to store the file into
3945: # $parser - instruction to parse file for objects ($parser = parse) or
3946: # if context is 'scantron', $parser is hashref of csv column mapping
3947: # (e.g.,{ PaperID => 0, LastName => 1, FirstName => 2, ID => 3,
3948: # Section => 4, CODE => 5, FirstQuestion => 9 }).
3949: # $allfiles - reference to hash for embedded objects
3950: # $codebase - reference to hash for codebase of java objects
3951: # $desuname - username for permanent storage of uploaded file
3952: # $dsetudom - domain for permanaent storage of uploaded file
3953: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
3954: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
3955: # $resizewidth - width (pixels) to which to resize uploaded image
3956: # $resizeheight - height (pixels) to which to resize uploaded image
3957: # $mimetype - reference to scalar to accommodate mime type determined
3958: # from File::MMagic.
3959: #
3960: # output: url of file in userspace, or error: <message>
3961: # or /adm/notfound.html if failure to upload occurse
3962:
3963: sub userfileupload {
3964: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
3965: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
3966: if (!defined($subdir)) { $subdir='unknown'; }
3967: my $fname=$env{'form.'.$formname.'.filename'};
3968: $fname=&clean_filename($fname);
3969: # See if there is anything left
3970: unless ($fname) { return 'error: no uploaded file'; }
3971: # If filename now begins with a . prepend unix timestamp _ milliseconds
3972: if ($fname =~ /^\./) {
3973: my ($s,$usec) = &gettimeofday();
3974: while (length($usec) < 6) {
3975: $usec = '0'.$usec;
3976: }
3977: $fname = $s.'_'.substr($usec,0,3).$fname;
3978: }
3979: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
3980: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
3981: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
3982: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3983: my $now = time;
3984: my $filepath;
3985: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
3986: $filepath = 'tmp/helprequests/'.$now;
3987: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
3988: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
3989: '_'.$env{'user.domain'}.'/pending';
3990: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3991: my ($docuname,$docudom);
3992: if ($destudom =~ /^$match_domain$/) {
3993: $docudom = $destudom;
3994: } else {
3995: $docudom = $env{'user.domain'};
3996: }
3997: if ($destuname =~ /^$match_username$/) {
3998: $docuname = $destuname;
3999: } else {
4000: $docuname = $env{'user.name'};
4001: }
4002: if (exists($env{'form.group'})) {
4003: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4004: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4005: }
4006: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
4007: if ($context eq 'canceloverwrite') {
4008: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
4009: if (-e $tempfile) {
4010: my @info = stat($tempfile);
4011: if ($info[9] eq $env{'form.timestamp'}) {
4012: unlink($tempfile);
4013: }
4014: }
4015: return;
4016: }
4017: }
4018: # Create the directory if not present
4019: my @parts=split(/\//,$filepath);
4020: my $fullpath = $perlvar{'lonDaemons'};
4021: for (my $i=0;$i<@parts;$i++) {
4022: $fullpath .= '/'.$parts[$i];
4023: if ((-e $fullpath)!=1) {
4024: mkdir($fullpath,0777);
4025: }
4026: }
4027: open(my $fh,'>',$fullpath.'/'.$fname);
4028: print $fh $env{'form.'.$formname};
4029: close($fh);
4030: if ($context eq 'existingfile') {
4031: my @info = stat($fullpath.'/'.$fname);
4032: return ($fullpath.'/'.$fname,$info[9]);
4033: } else {
4034: return $fullpath.'/'.$fname;
4035: }
4036: }
4037: if ($subdir eq 'scantron') {
4038: $fname = 'scantron_orig_'.$fname;
4039: } else {
4040: $fname="$subdir/$fname";
4041: }
4042: if ($context eq 'coursedoc') {
4043: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4044: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4045: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
4046: return &finishuserfileupload($docuname,$docudom,
4047: $formname,$fname,$parser,$allfiles,
4048: $codebase,$thumbwidth,$thumbheight,
4049: $resizewidth,$resizeheight,$context,$mimetype);
4050: } else {
4051: if ($env{'form.folder'}) {
4052: $fname=$env{'form.folder'}.'/'.$fname;
4053: }
4054: return &process_coursefile('uploaddoc',$docuname,$docudom,
4055: $fname,$formname,$parser,
4056: $allfiles,$codebase,$mimetype);
4057: }
4058: } elsif (defined($destuname)) {
4059: my $docuname=$destuname;
4060: my $docudom=$destudom;
4061: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
4062: $parser,$allfiles,$codebase,
4063: $thumbwidth,$thumbheight,
4064: $resizewidth,$resizeheight,$context,$mimetype);
4065: } else {
4066: my $docuname=$env{'user.name'};
4067: my $docudom=$env{'user.domain'};
4068: if ((exists($env{'form.group'})) || ($context eq 'syllabus')) {
4069: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4070: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4071: }
4072: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
4073: $parser,$allfiles,$codebase,
4074: $thumbwidth,$thumbheight,
4075: $resizewidth,$resizeheight,$context,$mimetype);
4076: }
4077: }
4078:
4079: sub finishuserfileupload {
4080: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
4081: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
4082: my $path=$docudom.'/'.$docuname.'/';
4083: my $filepath=$perlvar{'lonDocRoot'};
4084:
4085: my ($fnamepath,$file,$fetchthumb);
4086: $file=$fname;
4087: if ($fname=~m|/|) {
4088: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
4089: $path.=$fnamepath.'/';
4090: }
4091: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
4092: my $count;
4093: for ($count=4;$count<=$#parts;$count++) {
4094: $filepath.="/$parts[$count]";
4095: if ((-e $filepath)!=1) {
4096: mkdir($filepath,0777);
4097: }
4098: }
4099:
4100: # Save the file
4101: {
4102: if (!open(FH,'>',$filepath.'/'.$file)) {
4103: &logthis('Failed to create '.$filepath.'/'.$file);
4104: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
4105: return '/adm/notfound.html';
4106: }
4107: if ($context eq 'overwrite') {
4108: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
4109: my $target = $filepath.'/'.$file;
4110: if (-e $source) {
4111: my @info = stat($source);
4112: if ($info[9] eq $env{'form.timestamp'}) {
4113: unless (&File::Copy::move($source,$target)) {
4114: &logthis('Failed to overwrite '.$filepath.'/'.$file);
4115: return "Moving from $source failed";
4116: }
4117: } else {
4118: return "Temporary file: $source had unexpected date/time for last modification";
4119: }
4120: } else {
4121: return "Temporary file: $source missing";
4122: }
4123: } elsif (!print FH ($env{'form.'.$formname})) {
4124: &logthis('Failed to write to '.$filepath.'/'.$file);
4125: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
4126: return '/adm/notfound.html';
4127: }
4128: close(FH);
4129: if ($resizewidth && $resizeheight) {
4130: my $mm = new File::MMagic;
4131: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
4132: if ($mime_type =~ m{^image/}) {
4133: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
4134: }
4135: }
4136: }
4137: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
4138: if (ref($mimetype)) {
4139: if ($$mimetype eq '') {
4140: my $mm = new File::MMagic;
4141: my $type = $mm->checktype_filename($filepath.'/'.$file);
4142: $$mimetype = $type;
4143: }
4144: }
4145: }
4146: if (($context ne 'scantron') && ($parser eq 'parse')) {
4147: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
4148: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
4149: $allfiles,$codebase);
4150: unless ($parse_result eq 'ok') {
4151: &logthis('Failed to parse '.$filepath.$file.
4152: ' for embedded media: '.$parse_result);
4153: }
4154: }
4155: } elsif (($context eq 'scantron') && (ref($parser) eq 'HASH')) {
4156: my $format = $env{'form.scantron_format'};
4157: &bubblesheet_converter($docudom,$filepath.'/'.$file,$parser,$format);
4158: }
4159: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
4160: my $input = $filepath.'/'.$file;
4161: my $output = $filepath.'/'.'tn-'.$file;
4162: my $thumbsize = $thumbwidth.'x'.$thumbheight;
4163: my @args = ('convert','-sample',$thumbsize,$input,$output);
4164: system({$args[0]} @args);
4165: if (-e $filepath.'/'.'tn-'.$file) {
4166: $fetchthumb = 1;
4167: }
4168: }
4169:
4170: # Notify homeserver to grep it
4171: #
4172: my $docuhome=&homeserver($docuname,$docudom);
4173: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
4174: if ($fetchresult eq 'ok') {
4175: if ($fetchthumb) {
4176: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
4177: if ($thumbresult ne 'ok') {
4178: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
4179: $docuhome.': '.$thumbresult);
4180: }
4181: }
4182: #
4183: # Return the URL to it
4184: return '/uploaded/'.$path.$file;
4185: } else {
4186: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
4187: ': '.$fetchresult);
4188: return '/adm/notfound.html';
4189: }
4190: }
4191:
4192: sub extract_embedded_items {
4193: my ($fullpath,$allfiles,$codebase,$content) = @_;
4194: my @state = ();
4195: my (%lastids,%related,%shockwave,%flashvars);
4196: my %javafiles = (
4197: codebase => '',
4198: code => '',
4199: archive => ''
4200: );
4201: my %mediafiles = (
4202: src => '',
4203: movie => '',
4204: );
4205: my $p;
4206: if ($content) {
4207: $p = HTML::LCParser->new($content);
4208: } else {
4209: $p = HTML::LCParser->new($fullpath);
4210: }
4211: while (my $t=$p->get_token()) {
4212: if ($t->[0] eq 'S') {
4213: my ($tagname, $attr) = ($t->[1],$t->[2]);
4214: push(@state, $tagname);
4215: if (lc($tagname) eq 'allow') {
4216: &add_filetype($allfiles,$attr->{'src'},'src');
4217: }
4218: if (lc($tagname) eq 'img') {
4219: &add_filetype($allfiles,$attr->{'src'},'src');
4220: }
4221: if (lc($tagname) eq 'a') {
4222: unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) {
4223: &add_filetype($allfiles,$attr->{'href'},'href');
4224: }
4225: }
4226: if (lc($tagname) eq 'script') {
4227: my $src;
4228: if ($attr->{'archive'} =~ /\.jar$/i) {
4229: &add_filetype($allfiles,$attr->{'archive'},'archive');
4230: } else {
4231: if ($attr->{'src'} ne '') {
4232: $src = $attr->{'src'};
4233: &add_filetype($allfiles,$src,'src');
4234: }
4235: }
4236: my $text = $p->get_trimmed_text();
4237: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
4238: my @swfargs = split(/,/,$1);
4239: foreach my $item (@swfargs) {
4240: $item =~ s/["']//g;
4241: $item =~ s/^\s+//;
4242: $item =~ s/\s+$//;
4243: }
4244: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
4245: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
4246: push(@{$related{$swfargs[0]}},$swfargs[2]);
4247: } else {
4248: $related{$swfargs[0]} = [$swfargs[2]];
4249: }
4250: }
4251: }
4252: }
4253: if (lc($tagname) eq 'link') {
4254: if (lc($attr->{'rel'}) eq 'stylesheet') {
4255: &add_filetype($allfiles,$attr->{'href'},'href');
4256: }
4257: }
4258: if (lc($tagname) eq 'object' ||
4259: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
4260: foreach my $item (keys(%javafiles)) {
4261: $javafiles{$item} = '';
4262: }
4263: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
4264: $lastids{lc($tagname)} = $attr->{'id'};
4265: }
4266: }
4267: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
4268: my $name = lc($attr->{'name'});
4269: foreach my $item (keys(%javafiles)) {
4270: if ($name eq $item) {
4271: $javafiles{$item} = $attr->{'value'};
4272: last;
4273: }
4274: }
4275: my $pathfrom;
4276: foreach my $item (keys(%mediafiles)) {
4277: if ($name eq $item) {
4278: $pathfrom = $attr->{'value'};
4279: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
4280: &add_filetype($allfiles,$pathfrom,$name);
4281: last;
4282: }
4283: }
4284: if ($name eq 'flashvars') {
4285: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
4286: }
4287: if ($pathfrom ne '') {
4288: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
4289: $pathfrom);
4290: }
4291: }
4292: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
4293: foreach my $item (keys(%javafiles)) {
4294: if ($attr->{$item}) {
4295: $javafiles{$item} = $attr->{$item};
4296: last;
4297: }
4298: }
4299: foreach my $item (keys(%mediafiles)) {
4300: if ($attr->{$item}) {
4301: &add_filetype($allfiles,$attr->{$item},$item);
4302: last;
4303: }
4304: }
4305: if (lc($tagname) eq 'embed') {
4306: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
4307: &embedded_dependency($allfiles,\%related,$attr->{'name'},
4308: $attr->{'src'});
4309: }
4310: }
4311: }
4312: if (lc($tagname) eq 'iframe') {
4313: my $src = $attr->{'src'} ;
4314: if (($src ne '') && ($src !~ m{^(/|https?://)})) {
4315: &add_filetype($allfiles,$src,'src');
4316: } elsif ($src =~ m{^/}) {
4317: if ($env{'request.course.id'}) {
4318: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4319: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4320: my $url = &hreflocation('',$fullpath);
4321: if ($url =~ m{^/uploaded/$cdom/$cnum/docs/(\w+/\d+)/}) {
4322: my $relpath = $1;
4323: if ($src =~ m{^/uploaded/$cdom/$cnum/docs/\Q$relpath\E/(.+)$}) {
4324: &add_filetype($allfiles,$1,'src');
4325: }
4326: }
4327: }
4328: }
4329: }
4330: if ($t->[4] =~ m{/>$}) {
4331: pop(@state);
4332: }
4333: } elsif ($t->[0] eq 'E') {
4334: my ($tagname) = ($t->[1]);
4335: if ($javafiles{'codebase'} ne '') {
4336: $javafiles{'codebase'} .= '/';
4337: }
4338: if (lc($tagname) eq 'applet' ||
4339: lc($tagname) eq 'object' ||
4340: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
4341: ) {
4342: foreach my $item (keys(%javafiles)) {
4343: if ($item ne 'codebase' && $javafiles{$item} ne '') {
4344: my $file=$javafiles{'codebase'}.$javafiles{$item};
4345: &add_filetype($allfiles,$file,$item);
4346: }
4347: }
4348: }
4349: pop @state;
4350: }
4351: }
4352: foreach my $id (sort(keys(%flashvars))) {
4353: if ($shockwave{$id} ne '') {
4354: my @pairs = split(/\&/,$flashvars{$id});
4355: foreach my $pair (@pairs) {
4356: my ($key,$value) = split(/\=/,$pair);
4357: if ($key eq 'thumb') {
4358: &add_filetype($allfiles,$value,$key);
4359: } elsif ($key eq 'content') {
4360: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
4361: my ($ext) = ($value =~ /\.([^.]+)$/);
4362: if ($ext ne '') {
4363: &add_filetype($allfiles,$path.$value,$ext);
4364: }
4365: }
4366: }
4367: }
4368: }
4369: return 'ok';
4370: }
4371:
4372: sub add_filetype {
4373: my ($allfiles,$file,$type)=@_;
4374: if (exists($allfiles->{$file})) {
4375: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
4376: push(@{$allfiles->{$file}}, &escape($type));
4377: }
4378: } else {
4379: @{$allfiles->{$file}} = (&escape($type));
4380: }
4381: }
4382:
4383: sub embedded_dependency {
4384: my ($allfiles,$related,$identifier,$pathfrom) = @_;
4385: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
4386: if (($identifier ne '') &&
4387: (ref($related->{$identifier}) eq 'ARRAY') &&
4388: ($pathfrom ne '')) {
4389: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
4390: foreach my $dep (@{$related->{$identifier}}) {
4391: &add_filetype($allfiles,$path.$dep,'object');
4392: }
4393: }
4394: }
4395: return;
4396: }
4397:
4398: sub bubblesheet_converter {
4399: my ($cdom,$fullpath,$config,$format) = @_;
4400: if ((&domain($cdom) ne '') &&
4401: ($fullpath =~ m{^\Q$perlvar{'lonDocRoot'}/userfiles/$cdom/\E$match_courseid/scantron_orig}) &&
4402: (-e $fullpath) && (ref($config) eq 'HASH') && ($format ne '')) {
4403: my (%csvcols,%csvoptions);
4404: if (ref($config->{'fields'}) eq 'HASH') {
4405: %csvcols = %{$config->{'fields'}};
4406: }
4407: if (ref($config->{'options'}) eq 'HASH') {
4408: %csvoptions = %{$config->{'options'}};
4409: }
4410: my %csvbynum = reverse(%csvcols);
4411: my %scantronconf = &get_scantron_config($format,$cdom);
4412: if (keys(%scantronconf)) {
4413: my %bynum = (
4414: $scantronconf{CODEstart} => 'CODEstart',
4415: $scantronconf{IDstart} => 'IDstart',
4416: $scantronconf{PaperID} => 'PaperID',
4417: $scantronconf{FirstName} => 'FirstName',
4418: $scantronconf{LastName} => 'LastName',
4419: $scantronconf{Qstart} => 'Qstart',
4420: );
4421: my @ordered;
4422: foreach my $item (sort { $a <=> $b } keys(%bynum)) {
4423: push(@ordered,$bynum{$item});
4424: }
4425: my %mapstart = (
4426: CODEstart => 'CODE',
4427: IDstart => 'ID',
4428: PaperID => 'PaperID',
4429: FirstName => 'FirstName',
4430: LastName => 'LastName',
4431: Qstart => 'FirstQuestion',
4432: );
4433: my %maplength = (
4434: CODEstart => 'CODElength',
4435: IDstart => 'IDlength',
4436: PaperID => 'PaperIDlength',
4437: FirstName => 'FirstNamelength',
4438: LastName => 'LastNamelength',
4439: );
4440: if (open(my $fh,'<',$fullpath)) {
4441: my $output;
4442: my %lettdig = &letter_to_digits();
4443: my %diglett = reverse(%lettdig);
4444: my $numletts = scalar(keys(%lettdig));
4445: my $num = 0;
4446: while (my $line=<$fh>) {
4447: $num ++;
4448: next if (($num == 1) && ($csvoptions{'hdr'} == 1));
4449: $line =~ s{[\r\n]+$}{};
4450: my %found;
4451: my @values = split(/,/,$line);
4452: my ($qstart,$record);
4453: for (my $i=0; $i<@values; $i++) {
4454: if ((($qstart ne '') && ($i > $qstart)) ||
4455: ($csvbynum{$i} eq 'FirstQuestion')) {
4456: if ($values[$i] eq '') {
4457: $values[$i] = $scantronconf{'Qoff'};
4458: } elsif ($scantronconf{'Qon'} eq 'number') {
4459: if ($values[$i] =~ /^[A-Ja-j]$/) {
4460: $values[$i] = $lettdig{uc($values[$i])};
4461: }
4462: } elsif ($scantronconf{'Qon'} eq 'letter') {
4463: if ($values[$i] =~ /^[0-9]$/) {
4464: $values[$i] = $diglett{$values[$i]};
4465: }
4466: } else {
4467: if ($values[$i] =~ /^[0-9A-Ja-j]$/) {
4468: my $digit;
4469: if ($values[$i] =~ /^[A-Ja-j]$/) {
4470: $digit = $lettdig{uc($values[$i])}-1;
4471: if ($values[$i] eq 'J') {
4472: $digit += $numletts;
4473: }
4474: } elsif ($values[$i] =~ /^[0-9]$/) {
4475: $digit = $values[$i]-1;
4476: if ($values[$i] eq '0') {
4477: $digit += $numletts;
4478: }
4479: }
4480: my $qval='';
4481: for (my $j=0; $j<$scantronconf{'Qlength'}; $j++) {
4482: if ($j == $digit) {
4483: $qval .= $scantronconf{'Qon'};
4484: } else {
4485: $qval .= $scantronconf{'Qoff'};
4486: }
4487: }
4488: $values[$i] = $qval;
4489: }
4490: }
4491: if (length($values[$i]) > $scantronconf{'Qlength'}) {
4492: $values[$i] = substr($values[$i],0,$scantronconf{'Qlength'});
4493: }
4494: my $numblank = $scantronconf{'Qlength'} - length($values[$i]);
4495: if ($numblank > 0) {
4496: $values[$i] .= ($scantronconf{'Qoff'} x $numblank);
4497: }
4498: if ($csvbynum{$i} eq 'FirstQuestion') {
4499: $qstart = $i;
4500: $found{$csvbynum{$i}} = $values[$i];
4501: } else {
4502: $found{'FirstQuestion'} .= $values[$i];
4503: }
4504: } elsif (exists($csvbynum{$i})) {
4505: if ($csvoptions{'rem'}) {
4506: $values[$i] =~ s/^\s+//;
4507: }
4508: if (($csvbynum{$i} eq 'PaperID') && ($csvoptions{'pad'})) {
4509: while (length($values[$i]) < $scantronconf{$maplength{$csvbynum{$i}}}) {
4510: $values[$i] = '0'.$values[$i];
4511: }
4512: }
4513: $found{$csvbynum{$i}} = $values[$i];
4514: }
4515: }
4516: foreach my $item (@ordered) {
4517: my $currlength = 1+length($record);
4518: my $numspaces = $scantronconf{$item} - $currlength;
4519: if ($numspaces > 0) {
4520: $record .= (' ' x $numspaces);
4521: }
4522: if (($mapstart{$item} ne '') && (exists($found{$mapstart{$item}}))) {
4523: unless ($item eq 'Qstart') {
4524: if (length($found{$mapstart{$item}}) > $scantronconf{$maplength{$item}}) {
4525: $found{$mapstart{$item}} = substr($found{$mapstart{$item}},0,$scantronconf{$maplength{$item}});
4526: }
4527: }
4528: $record .= $found{$mapstart{$item}};
4529: }
4530: }
4531: $output .= "$record\n";
4532: }
4533: close($fh);
4534: if ($output) {
4535: if (open(my $fh,'>',$fullpath)) {
4536: print $fh $output;
4537: close($fh);
4538: }
4539: }
4540: }
4541: }
4542: return;
4543: }
4544: }
4545:
4546: sub letter_to_digits {
4547: my %lettdig = (
4548: A => 1,
4549: B => 2,
4550: C => 3,
4551: D => 4,
4552: E => 5,
4553: F => 6,
4554: G => 7,
4555: H => 8,
4556: I => 9,
4557: J => 0,
4558: );
4559: return %lettdig;
4560: }
4561:
4562: sub get_scantron_config {
4563: my ($which,$cdom) = @_;
4564: my @lines = &get_scantronformat_file($cdom);
4565: my %config;
4566: #FIXME probably should move to XML it has already gotten a bit much now
4567: foreach my $line (@lines) {
4568: my ($name,$descrip)=split(/:/,$line);
4569: if ($name ne $which ) { next; }
4570: chomp($line);
4571: my @config=split(/:/,$line);
4572: $config{'name'}=$config[0];
4573: $config{'description'}=$config[1];
4574: $config{'CODElocation'}=$config[2];
4575: $config{'CODEstart'}=$config[3];
4576: $config{'CODElength'}=$config[4];
4577: $config{'IDstart'}=$config[5];
4578: $config{'IDlength'}=$config[6];
4579: $config{'Qstart'}=$config[7];
4580: $config{'Qlength'}=$config[8];
4581: $config{'Qoff'}=$config[9];
4582: $config{'Qon'}=$config[10];
4583: $config{'PaperID'}=$config[11];
4584: $config{'PaperIDlength'}=$config[12];
4585: $config{'FirstName'}=$config[13];
4586: $config{'FirstNamelength'}=$config[14];
4587: $config{'LastName'}=$config[15];
4588: $config{'LastNamelength'}=$config[16];
4589: $config{'BubblesPerRow'}=$config[17];
4590: last;
4591: }
4592: return %config;
4593: }
4594:
4595: sub get_scantronformat_file {
4596: my ($cdom) = @_;
4597: if ($cdom eq '') {
4598: $cdom= $env{'course.'.$env{'request.course.id'}.'.domain'};
4599: }
4600: my %domconfig = &get_dom('configuration',['scantron'],$cdom);
4601: my $gottab = 0;
4602: my @lines;
4603: if (ref($domconfig{'scantron'}) eq 'HASH') {
4604: if ($domconfig{'scantron'}{'scantronformat'} ne '') {
4605: my $formatfile = &getfile($perlvar{'lonDocRoot'}.$domconfig{'scantron'}{'scantronformat'});
4606: if ($formatfile ne '-1') {
4607: @lines = split("\n",$formatfile,-1);
4608: $gottab = 1;
4609: }
4610: }
4611: }
4612: if (!$gottab) {
4613: my $confname = $cdom.'-domainconfig';
4614: my $default = $perlvar{'lonDocRoot'}.'/res/'.$cdom.'/'.$confname.'/default.tab';
4615: my $formatfile = &getfile($default);
4616: if ($formatfile ne '-1') {
4617: @lines = split("\n",$formatfile,-1);
4618: $gottab = 1;
4619: }
4620: }
4621: if (!$gottab) {
4622: my @domains = ¤t_machine_domains();
4623: if (grep(/^\Q$cdom\E$/,@domains)) {
4624: if (open(my $fh,'<',$perlvar{'lonTabDir'}.'/scantronformat.tab')) {
4625: @lines = <$fh>;
4626: close($fh);
4627: }
4628: } else {
4629: if (open(my $fh,'<',$perlvar{'lonTabDir'}.'/default_scantronformat.tab')) {
4630: @lines = <$fh>;
4631: close($fh);
4632: }
4633: }
4634: }
4635: return @lines;
4636: }
4637:
4638: sub removeuploadedurl {
4639: my ($url)=@_;
4640: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
4641: return &removeuserfile($uname,$udom,$fname);
4642: }
4643:
4644: sub removeuserfile {
4645: my ($docuname,$docudom,$fname)=@_;
4646: my $home=&homeserver($docuname,$docudom);
4647: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
4648: if ($result eq 'ok') {
4649: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
4650: my $metafile = $fname.'.meta';
4651: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
4652: my $url = "/uploaded/$docudom/$docuname/$fname";
4653: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
4654: my $sqlresult =
4655: &update_portfolio_table($docuname,$docudom,$file,
4656: 'portfolio_metadata',$group,
4657: 'delete');
4658: }
4659: }
4660: return $result;
4661: }
4662:
4663: sub mkdiruserfile {
4664: my ($docuname,$docudom,$dir)=@_;
4665: my $home=&homeserver($docuname,$docudom);
4666: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
4667: }
4668:
4669: sub renameuserfile {
4670: my ($docuname,$docudom,$old,$new)=@_;
4671: my $home=&homeserver($docuname,$docudom);
4672: my $result = &reply("renameuserfile:$docudom:$docuname:".
4673: &escape("$old").':'.&escape("$new"),$home);
4674: if ($result eq 'ok') {
4675: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
4676: my $oldmeta = $old.'.meta';
4677: my $newmeta = $new.'.meta';
4678: my $metaresult =
4679: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
4680: my $url = "/uploaded/$docudom/$docuname/$old";
4681: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
4682: my $sqlresult =
4683: &update_portfolio_table($docuname,$docudom,$file,
4684: 'portfolio_metadata',$group,
4685: 'delete');
4686: }
4687: }
4688: return $result;
4689: }
4690:
4691: # ------------------------------------------------------------------------- Log
4692:
4693: sub log {
4694: my ($dom,$nam,$hom,$what)=@_;
4695: return critical("log:$dom:$nam:$what",$hom);
4696: }
4697:
4698: # ------------------------------------------------------------------ Course Log
4699: #
4700: # This routine flushes several buffers of non-mission-critical nature
4701: #
4702:
4703: sub flushcourselogs {
4704: &logthis('Flushing log buffers');
4705: #
4706: # course logs
4707: # This is a log of all transactions in a course, which can be used
4708: # for data mining purposes
4709: #
4710: # It also collects the courseid database, which lists last transaction
4711: # times and course titles for all courseids
4712: #
4713: my %courseidbuffer=();
4714: foreach my $crsid (keys(%courselogs)) {
4715: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
4716: &escape($courselogs{$crsid}),
4717: $coursehombuf{$crsid}) eq 'ok') {
4718: delete $courselogs{$crsid};
4719: } else {
4720: &logthis('Failed to flush log buffer for '.$crsid);
4721: if (length($courselogs{$crsid})>40000) {
4722: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
4723: " exceeded maximum size, deleting.</font>");
4724: delete $courselogs{$crsid};
4725: }
4726: }
4727: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
4728: 'description' => $coursedescrbuf{$crsid},
4729: 'inst_code' => $courseinstcodebuf{$crsid},
4730: 'type' => $coursetypebuf{$crsid},
4731: 'owner' => $courseownerbuf{$crsid},
4732: };
4733: }
4734: #
4735: # Write course id database (reverse lookup) to homeserver of courses
4736: # Is used in pickcourse
4737: #
4738: foreach my $crs_home (keys(%courseidbuffer)) {
4739: my $response = &courseidput(&host_domain($crs_home),
4740: $courseidbuffer{$crs_home},
4741: $crs_home,'timeonly');
4742: }
4743: #
4744: # File accesses
4745: # Writes to the dynamic metadata of resources to get hit counts, etc.
4746: #
4747: foreach my $entry (keys(%accesshash)) {
4748: if ($entry =~ /___count$/) {
4749: my ($dom,$name);
4750: ($dom,$name,undef)=
4751: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
4752: if (! defined($dom) || $dom eq '' ||
4753: ! defined($name) || $name eq '') {
4754: my $cid = $env{'request.course.id'};
4755: $dom = $env{'request.'.$cid.'.domain'};
4756: $name = $env{'request.'.$cid.'.num'};
4757: }
4758: my $value = $accesshash{$entry};
4759: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
4760: my %temphash=($url => $value);
4761: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
4762: if ($result eq 'ok') {
4763: delete $accesshash{$entry};
4764: }
4765: } else {
4766: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
4767: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
4768: my %temphash=($entry => $accesshash{$entry});
4769: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
4770: delete $accesshash{$entry};
4771: }
4772: }
4773: }
4774: #
4775: # Roles
4776: # Reverse lookup of user roles for course faculty/staff and co-authorship
4777: #
4778: foreach my $entry (keys(%userrolehash)) {
4779: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
4780: split(/\:/,$entry);
4781: if (&Apache::lonnet::put('nohist_userroles',
4782: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
4783: $rudom,$runame) eq 'ok') {
4784: delete $userrolehash{$entry};
4785: }
4786: }
4787: #
4788: # Reverse lookup of domain roles (dc, ad, li, sc, dh, da, au)
4789: #
4790: my %domrolebuffer = ();
4791: foreach my $entry (keys(%domainrolehash)) {
4792: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
4793: if ($domrolebuffer{$rudom}) {
4794: $domrolebuffer{$rudom}.='&'.&escape($entry).
4795: '='.&escape($domainrolehash{$entry});
4796: } else {
4797: $domrolebuffer{$rudom}.=&escape($entry).
4798: '='.&escape($domainrolehash{$entry});
4799: }
4800: delete $domainrolehash{$entry};
4801: }
4802: foreach my $dom (keys(%domrolebuffer)) {
4803: my %servers;
4804: if (defined(&domain($dom,'primary'))) {
4805: my $primary=&domain($dom,'primary');
4806: my $hostname=&hostname($primary);
4807: $servers{$primary} = $hostname;
4808: } else {
4809: %servers = &get_servers($dom,'library');
4810: }
4811: foreach my $tryserver (keys(%servers)) {
4812: if (&reply('domroleput:'.$dom.':'.
4813: $domrolebuffer{$dom},$tryserver) eq 'ok') {
4814: last;
4815: } else {
4816: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
4817: }
4818: }
4819: }
4820: $dumpcount++;
4821: }
4822:
4823: sub courselog {
4824: my $what=shift;
4825: $what=time.':'.$what;
4826: unless ($env{'request.course.id'}) { return ''; }
4827: $coursedombuf{$env{'request.course.id'}}=
4828: $env{'course.'.$env{'request.course.id'}.'.domain'};
4829: $coursenumbuf{$env{'request.course.id'}}=
4830: $env{'course.'.$env{'request.course.id'}.'.num'};
4831: $coursehombuf{$env{'request.course.id'}}=
4832: $env{'course.'.$env{'request.course.id'}.'.home'};
4833: $coursedescrbuf{$env{'request.course.id'}}=
4834: $env{'course.'.$env{'request.course.id'}.'.description'};
4835: $courseinstcodebuf{$env{'request.course.id'}}=
4836: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
4837: $courseownerbuf{$env{'request.course.id'}}=
4838: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
4839: $coursetypebuf{$env{'request.course.id'}}=
4840: $env{'course.'.$env{'request.course.id'}.'.type'};
4841: if (defined $courselogs{$env{'request.course.id'}}) {
4842: $courselogs{$env{'request.course.id'}}.='&'.$what;
4843: } else {
4844: $courselogs{$env{'request.course.id'}}.=$what;
4845: }
4846: if (length($courselogs{$env{'request.course.id'}})>4048) {
4847: &flushcourselogs();
4848: }
4849: }
4850:
4851: sub courseacclog {
4852: my $fnsymb=shift;
4853: unless ($env{'request.course.id'}) { return ''; }
4854: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
4855: if ($fnsymb=~/$LONCAPA::assess_re/) {
4856: $what.=':POST';
4857: # FIXME: Probably ought to escape things....
4858: foreach my $key (keys(%env)) {
4859: if ($key=~/^form\.(.*)/) {
4860: my $formitem = $1;
4861: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
4862: $what.=':'.$formitem.'='.$env{$key};
4863: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
4864: $what.=':'.$formitem.'='.$env{$key};
4865: }
4866: }
4867: }
4868: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
4869: # FIXME: We should not be depending on a form parameter that someone
4870: # editing lonsearchcat.pm might change in the future.
4871: if ($env{'form.phase'} eq 'course_search') {
4872: $what.= ':POST';
4873: # FIXME: Probably ought to escape things....
4874: foreach my $element ('courseexp','crsfulltext','crsrelated',
4875: 'crsdiscuss') {
4876: $what.=':'.$element.'='.$env{'form.'.$element};
4877: }
4878: }
4879: }
4880: &courselog($what);
4881: }
4882:
4883: sub countacc {
4884: my $url=&declutter(shift);
4885: return if (! defined($url) || $url eq '');
4886: unless ($env{'request.course.id'}) { return ''; }
4887: #
4888: # Mark that this url was used in this course
4889: #
4890: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
4891: #
4892: # Increase the access count for this resource in this child process
4893: #
4894: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
4895: $accesshash{$key}++;
4896: }
4897:
4898: sub linklog {
4899: my ($from,$to)=@_;
4900: $from=&declutter($from);
4901: $to=&declutter($to);
4902: $accesshash{$from.'___'.$to.'___comefrom'}=1;
4903: $accesshash{$to.'___'.$from.'___goto'}=1;
4904: }
4905:
4906: sub statslog {
4907: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
4908: if ($users<2) { return; }
4909: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
4910: 'course' => $env{'request.course.id'},
4911: 'sections' => '"all"',
4912: 'num_students' => $users,
4913: 'part' => $part,
4914: 'symb' => $symb,
4915: 'mean_tries' => $av_attempts,
4916: 'deg_of_diff' => $degdiff});
4917: foreach my $key (keys(%dynstore)) {
4918: $accesshash{$key}=$dynstore{$key};
4919: }
4920: }
4921:
4922: sub userrolelog {
4923: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
4924: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
4925: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
4926: $userrolehash
4927: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
4928: =$tend.':'.$tstart;
4929: }
4930: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
4931: $userrolehash
4932: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
4933: =$tend.':'.$tstart;
4934: }
4935: if ($trole =~ /^(dc|ad|li|au|dg|sc|dh|da)/ ) {
4936: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
4937: $domainrolehash
4938: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
4939: = $tend.':'.$tstart;
4940: }
4941: }
4942:
4943: sub courserolelog {
4944: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
4945: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
4946: my $cdom = $1;
4947: my $cnum = $2;
4948: my $sec = $3;
4949: my $namespace = 'rolelog';
4950: my %storehash = (
4951: role => $trole,
4952: start => $tstart,
4953: end => $tend,
4954: selfenroll => $selfenroll,
4955: context => $context,
4956: );
4957: if ($trole eq 'gr') {
4958: $namespace = 'groupslog';
4959: $storehash{'group'} = $sec;
4960: } else {
4961: $storehash{'section'} = $sec;
4962: }
4963: &write_log('course',$namespace,\%storehash,$delflag,$username,
4964: $domain,$cnum,$cdom);
4965: if (($trole ne 'st') || ($sec ne '')) {
4966: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
4967: }
4968: }
4969: return;
4970: }
4971:
4972: sub domainrolelog {
4973: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
4974: if ($area =~ m{^/($match_domain)/$}) {
4975: my $cdom = $1;
4976: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
4977: my $namespace = 'rolelog';
4978: my %storehash = (
4979: role => $trole,
4980: start => $tstart,
4981: end => $tend,
4982: context => $context,
4983: );
4984: &write_log('domain',$namespace,\%storehash,$delflag,$username,
4985: $domain,$domconfiguser,$cdom);
4986: }
4987: return;
4988:
4989: }
4990:
4991: sub coauthorrolelog {
4992: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
4993: if ($area =~ m{^/($match_domain)/($match_username)$}) {
4994: my $audom = $1;
4995: my $auname = $2;
4996: my $namespace = 'rolelog';
4997: my %storehash = (
4998: role => $trole,
4999: start => $tstart,
5000: end => $tend,
5001: context => $context,
5002: );
5003: &write_log('author',$namespace,\%storehash,$delflag,$username,
5004: $domain,$auname,$audom);
5005: }
5006: return;
5007: }
5008:
5009: sub get_course_adv_roles {
5010: my ($cid,$codes) = @_;
5011: $cid=$env{'request.course.id'} unless (defined($cid));
5012: my %coursehash=&coursedescription($cid);
5013: my $crstype = &Apache::loncommon::course_type($cid);
5014: my %nothide=();
5015: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
5016: if ($user !~ /:/) {
5017: $nothide{join(':',split(/[\@]/,$user))}=1;
5018: } else {
5019: $nothide{$user}=1;
5020: }
5021: }
5022: my @possdoms = ($coursehash{'domain'});
5023: if ($coursehash{'checkforpriv'}) {
5024: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
5025: }
5026: my %returnhash=();
5027: my %dumphash=
5028: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
5029: my $now=time;
5030: my %privileged;
5031: foreach my $entry (keys(%dumphash)) {
5032: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
5033: if (($tstart) && ($tstart<0)) { next; }
5034: if (($tend) && ($tend<$now)) { next; }
5035: if (($tstart) && ($now<$tstart)) { next; }
5036: my ($role,$username,$domain,$section)=split(/\:/,$entry);
5037: if ($username eq '' || $domain eq '') { next; }
5038: if ((&privileged($username,$domain,\@possdoms)) &&
5039: (!$nothide{$username.':'.$domain})) { next; }
5040: if ($role eq 'cr') { next; }
5041: if ($codes) {
5042: if ($section) { $role .= ':'.$section; }
5043: if ($returnhash{$role}) {
5044: $returnhash{$role}.=','.$username.':'.$domain;
5045: } else {
5046: $returnhash{$role}=$username.':'.$domain;
5047: }
5048: } else {
5049: my $key=&plaintext($role,$crstype);
5050: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
5051: if ($returnhash{$key}) {
5052: $returnhash{$key}.=','.$username.':'.$domain;
5053: } else {
5054: $returnhash{$key}=$username.':'.$domain;
5055: }
5056: }
5057: }
5058: return %returnhash;
5059: }
5060:
5061: sub get_my_roles {
5062: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
5063: unless (defined($uname)) { $uname=$env{'user.name'}; }
5064: unless (defined($udom)) { $udom=$env{'user.domain'}; }
5065: my (%dumphash,%nothide);
5066: if ($context eq 'userroles') {
5067: %dumphash = &dump('roles',$udom,$uname);
5068: } else {
5069: %dumphash = &dump('nohist_userroles',$udom,$uname);
5070: if ($hidepriv) {
5071: my %coursehash=&coursedescription($udom.'_'.$uname);
5072: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
5073: if ($user !~ /:/) {
5074: $nothide{join(':',split(/[\@]/,$user))} = 1;
5075: } else {
5076: $nothide{$user} = 1;
5077: }
5078: }
5079: }
5080: }
5081: my %returnhash=();
5082: my $now=time;
5083: my %privileged;
5084: foreach my $entry (keys(%dumphash)) {
5085: my ($role,$tend,$tstart);
5086: if ($context eq 'userroles') {
5087: next if ($entry =~ /^rolesdef/);
5088: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
5089: } else {
5090: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
5091: }
5092: if (($tstart) && ($tstart<0)) { next; }
5093: my $status = 'active';
5094: if (($tend) && ($tend<=$now)) {
5095: $status = 'previous';
5096: }
5097: if (($tstart) && ($now<$tstart)) {
5098: $status = 'future';
5099: }
5100: if (ref($types) eq 'ARRAY') {
5101: if (!grep(/^\Q$status\E$/,@{$types})) {
5102: next;
5103: }
5104: } else {
5105: if ($status ne 'active') {
5106: next;
5107: }
5108: }
5109: my ($rolecode,$username,$domain,$section,$area);
5110: if ($context eq 'userroles') {
5111: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
5112: (undef,$domain,$username,$section) = split(/\//,$area);
5113: } else {
5114: ($role,$username,$domain,$section) = split(/\:/,$entry);
5115: }
5116: if (ref($roledoms) eq 'ARRAY') {
5117: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
5118: next;
5119: }
5120: }
5121: if (ref($roles) eq 'ARRAY') {
5122: if (!grep(/^\Q$role\E$/,@{$roles})) {
5123: if ($role =~ /^cr\//) {
5124: if (!grep(/^cr$/,@{$roles})) {
5125: next;
5126: }
5127: } elsif ($role =~ /^gr\//) {
5128: if (!grep(/^gr$/,@{$roles})) {
5129: next;
5130: }
5131: } else {
5132: next;
5133: }
5134: }
5135: }
5136: if ($hidepriv) {
5137: my @privroles = ('dc','su');
5138: if ($context eq 'userroles') {
5139: next if (grep(/^\Q$role\E$/,@privroles));
5140: } else {
5141: my $possdoms = [$domain];
5142: if (ref($roledoms) eq 'ARRAY') {
5143: push(@{$possdoms},@{$roledoms});
5144: }
5145: if (&privileged($username,$domain,$possdoms,\@privroles)) {
5146: if (!$nothide{$username.':'.$domain}) {
5147: next;
5148: }
5149: }
5150: }
5151: }
5152: if ($withsec) {
5153: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
5154: $tstart.':'.$tend;
5155: } else {
5156: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
5157: }
5158: }
5159: return %returnhash;
5160: }
5161:
5162: sub get_all_adhocroles {
5163: my ($dom) = @_;
5164: my @roles_by_num = ();
5165: my %domdefaults = &get_domain_defaults($dom);
5166: my (%description,%access_in_dom,%access_info);
5167: if (ref($domdefaults{'adhocroles'}) eq 'HASH') {
5168: my $count = 0;
5169: my %domcurrent = %{$domdefaults{'adhocroles'}};
5170: my %ordered;
5171: foreach my $role (sort(keys(%domcurrent))) {
5172: my ($order,$desc,$access_in_dom);
5173: if (ref($domcurrent{$role}) eq 'HASH') {
5174: $order = $domcurrent{$role}{'order'};
5175: $desc = $domcurrent{$role}{'desc'};
5176: $access_in_dom{$role} = $domcurrent{$role}{'access'};
5177: $access_info{$role} = $domcurrent{$role}{$access_in_dom{$role}};
5178: }
5179: if ($order eq '') {
5180: $order = $count;
5181: }
5182: $ordered{$order} = $role;
5183: if ($desc ne '') {
5184: $description{$role} = $desc;
5185: } else {
5186: $description{$role}= $role;
5187: }
5188: $count++;
5189: }
5190: foreach my $item (sort {$a <=> $b } (keys(%ordered))) {
5191: push(@roles_by_num,$ordered{$item});
5192: }
5193: }
5194: return (\@roles_by_num,\%description,\%access_in_dom,\%access_info);
5195: }
5196:
5197: sub get_my_adhocroles {
5198: my ($cid,$checkreg) = @_;
5199: my ($cdom,$cnum,%info,@possroles,$description,$roles_by_num);
5200: if ($env{'request.course.id'} eq $cid) {
5201: $cdom = $env{'course.'.$cid.'.domain'};
5202: $cnum = $env{'course.'.$cid.'.num'};
5203: $info{'internal.coursecode'} = $env{'course.'.$cid.'.internal.coursecode'};
5204: } elsif ($cid =~ /^($match_domain)_($match_courseid)$/) {
5205: $cdom = $1;
5206: $cnum = $2;
5207: %info = &Apache::lonnet::get('environment',['internal.coursecode'],
5208: $cdom,$cnum);
5209: }
5210: if (($info{'internal.coursecode'} ne '') && ($checkreg)) {
5211: my $user = $env{'user.name'}.':'.$env{'user.domain'};
5212: my %rosterhash = &get('classlist',[$user],$cdom,$cnum);
5213: if ($rosterhash{$user} ne '') {
5214: my $type = (split(/:/,$rosterhash{$user}))[5];
5215: return ([],{}) if ($type eq 'auto');
5216: }
5217: }
5218: if (($cdom ne '') && ($cnum ne '')) {
5219: if (($env{"user.role.dh./$cdom/"}) || ($env{"user.role.da./$cdom/"})) {
5220: my $then=$env{'user.login.time'};
5221: my $update=$env{'user.update.time'};
5222: if (!$update) {
5223: $update = $then;
5224: }
5225: my @liveroles;
5226: foreach my $role ('dh','da') {
5227: if ($env{"user.role.$role./$cdom/"}) {
5228: my ($tstart,$tend)=split(/\./,$env{"user.role.$role./$cdom/"});
5229: my $limit = $update;
5230: if ($env{'request.role'} eq "$role./$cdom/") {
5231: $limit = $then;
5232: }
5233: my $activerole = 1;
5234: if ($tstart && $tstart>$limit) { $activerole = 0; }
5235: if ($tend && $tend <$limit) { $activerole = 0; }
5236: if ($activerole) {
5237: push(@liveroles,$role);
5238: }
5239: }
5240: }
5241: if (@liveroles) {
5242: if (&homeserver($cnum,$cdom) ne 'no_host') {
5243: my ($accessref,$accessinfo,%access_in_dom);
5244: ($roles_by_num,$description,$accessref,$accessinfo) = &get_all_adhocroles($cdom);
5245: if (ref($roles_by_num) eq 'ARRAY') {
5246: if (@{$roles_by_num}) {
5247: my %settings;
5248: if ($env{'request.course.id'} eq $cid) {
5249: foreach my $envkey (keys(%env)) {
5250: if ($envkey =~ /^\Qcourse.$cid.\E(internal\.adhoc.+)$/) {
5251: $settings{$1} = $env{$envkey};
5252: }
5253: }
5254: } else {
5255: %settings = &dump('environment',$cdom,$cnum,'internal\.adhoc');
5256: }
5257: my %setincrs;
5258: if ($settings{'internal.adhocaccess'}) {
5259: map { $setincrs{$_} = 1; } split(/,/,$settings{'internal.adhocaccess'});
5260: }
5261: my @statuses;
5262: if ($env{'environment.inststatus'}) {
5263: @statuses = split(/,/,$env{'environment.inststatus'});
5264: }
5265: my $user = $env{'user.name'}.':'.$env{'user.domain'};
5266: if (ref($accessref) eq 'HASH') {
5267: %access_in_dom = %{$accessref};
5268: }
5269: foreach my $role (@{$roles_by_num}) {
5270: my ($curraccess,@okstatus,@personnel);
5271: if ($setincrs{$role}) {
5272: ($curraccess,my $rest) = split(/=/,$settings{'internal.adhoc.'.$role});
5273: if ($curraccess eq 'status') {
5274: @okstatus = split(/\&/,$rest);
5275: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5276: @personnel = split(/\&/,$rest);
5277: }
5278: } else {
5279: $curraccess = $access_in_dom{$role};
5280: if (ref($accessinfo) eq 'HASH') {
5281: if ($curraccess eq 'status') {
5282: if (ref($accessinfo->{$role}) eq 'ARRAY') {
5283: @okstatus = @{$accessinfo->{$role}};
5284: }
5285: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5286: if (ref($accessinfo->{$role}) eq 'ARRAY') {
5287: @personnel = @{$accessinfo->{$role}};
5288: }
5289: }
5290: }
5291: }
5292: if ($curraccess eq 'none') {
5293: next;
5294: } elsif ($curraccess eq 'all') {
5295: push(@possroles,$role);
5296: } elsif ($curraccess eq 'dh') {
5297: if (grep(/^dh$/,@liveroles)) {
5298: push(@possroles,$role);
5299: } else {
5300: next;
5301: }
5302: } elsif ($curraccess eq 'da') {
5303: if (grep(/^da$/,@liveroles)) {
5304: push(@possroles,$role);
5305: } else {
5306: next;
5307: }
5308: } elsif ($curraccess eq 'status') {
5309: if (@okstatus) {
5310: if (!@statuses) {
5311: if (grep(/^default$/,@okstatus)) {
5312: push(@possroles,$role);
5313: }
5314: } else {
5315: foreach my $status (@okstatus) {
5316: if (grep(/^\Q$status\E$/,@statuses)) {
5317: push(@possroles,$role);
5318: last;
5319: }
5320: }
5321: }
5322: }
5323: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5324: if (grep(/^\Q$user\E$/,@personnel)) {
5325: if ($curraccess eq 'exc') {
5326: push(@possroles,$role);
5327: }
5328: } elsif ($curraccess eq 'inc') {
5329: push(@possroles,$role);
5330: }
5331: }
5332: }
5333: }
5334: }
5335: }
5336: }
5337: }
5338: }
5339: unless (ref($description) eq 'HASH') {
5340: if (ref($roles_by_num) eq 'ARRAY') {
5341: my %desc;
5342: map { $desc{$_} = $_; } (@{$roles_by_num});
5343: $description = \%desc;
5344: } else {
5345: $description = {};
5346: }
5347: }
5348: return (\@possroles,$description);
5349: }
5350:
5351: # ----------------------------------------------------- Frontpage Announcements
5352: #
5353: #
5354:
5355: sub postannounce {
5356: my ($server,$text)=@_;
5357: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
5358: unless ($text=~/\w/) { $text=''; }
5359: return &reply('setannounce:'.&escape($text),$server);
5360: }
5361:
5362: sub getannounce {
5363:
5364: if (open(my $fh,"<",$perlvar{'lonDocRoot'}.'/announcement.txt')) {
5365: my $announcement='';
5366: while (my $line = <$fh>) { $announcement .= $line; }
5367: close($fh);
5368: if ($announcement=~/\w/) {
5369: return
5370: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
5371: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
5372: } else {
5373: return '';
5374: }
5375: } else {
5376: return '';
5377: }
5378: }
5379:
5380: # ---------------------------------------------------------- Course ID routines
5381: # Deal with domain's nohist_courseid.db files
5382: #
5383:
5384: sub courseidput {
5385: my ($domain,$storehash,$coursehome,$caller) = @_;
5386: return unless (ref($storehash) eq 'HASH');
5387: my $outcome;
5388: if ($caller eq 'timeonly') {
5389: my $cids = '';
5390: foreach my $item (keys(%$storehash)) {
5391: $cids.=&escape($item).'&';
5392: }
5393: $cids=~s/\&$//;
5394: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
5395: $coursehome);
5396: } else {
5397: my $items = '';
5398: foreach my $item (keys(%$storehash)) {
5399: $items.= &escape($item).'='.
5400: &freeze_escape($$storehash{$item}).'&';
5401: }
5402: $items=~s/\&$//;
5403: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
5404: $coursehome);
5405: }
5406: if ($outcome eq 'unknown_cmd') {
5407: my $what;
5408: foreach my $cid (keys(%$storehash)) {
5409: $what .= &escape($cid).'=';
5410: foreach my $item ('description','inst_code','owner','type') {
5411: $what .= &escape($storehash->{$cid}{$item}).':';
5412: }
5413: $what =~ s/\:$/&/;
5414: }
5415: $what =~ s/\&$//;
5416: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
5417: } else {
5418: return $outcome;
5419: }
5420: }
5421:
5422: sub courseiddump {
5423: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
5424: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
5425: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
5426: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner,
5427: $hasuniquecode,$reqcrsdom,$reqinstcode)=@_;
5428: my $as_hash = 1;
5429: my %returnhash;
5430: if (!$domfilter) { $domfilter=''; }
5431: my %libserv = &all_library();
5432: foreach my $tryserver (keys(%libserv)) {
5433: if ( ( $hostidflag == 1
5434: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
5435: || (!defined($hostidflag)) ) {
5436:
5437: if (($domfilter eq '') ||
5438: (&host_domain($tryserver) eq $domfilter)) {
5439: my $rep;
5440: if (grep { $_ eq $tryserver } current_machine_ids()) {
5441: $rep = LONCAPA::Lond::dump_course_id_handler(
5442: join(":", (&host_domain($tryserver), $sincefilter,
5443: &escape($descfilter), &escape($instcodefilter),
5444: &escape($ownerfilter), &escape($coursefilter),
5445: &escape($typefilter), &escape($regexp_ok),
5446: $as_hash, &escape($selfenrollonly),
5447: &escape($catfilter), $showhidden, $caller,
5448: &escape($cloner), &escape($cc_clone), $cloneonly,
5449: &escape($createdbefore), &escape($createdafter),
5450: &escape($creationcontext),$domcloner,$hasuniquecode,
5451: $reqcrsdom,&escape($reqinstcode))));
5452: } else {
5453: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
5454: $sincefilter.':'.&escape($descfilter).':'.
5455: &escape($instcodefilter).':'.&escape($ownerfilter).
5456: ':'.&escape($coursefilter).':'.&escape($typefilter).
5457: ':'.&escape($regexp_ok).':'.$as_hash.':'.
5458: &escape($selfenrollonly).':'.&escape($catfilter).':'.
5459: $showhidden.':'.$caller.':'.&escape($cloner).':'.
5460: &escape($cc_clone).':'.$cloneonly.':'.
5461: &escape($createdbefore).':'.&escape($createdafter).':'.
5462: &escape($creationcontext).':'.$domcloner.':'.$hasuniquecode.
5463: ':'.$reqcrsdom.':'.&escape($reqinstcode),$tryserver);
5464: }
5465:
5466: my @pairs=split(/\&/,$rep);
5467: foreach my $item (@pairs) {
5468: my ($key,$value)=split(/\=/,$item,2);
5469: $key = &unescape($key);
5470: next if ($key =~ /^error: 2 /);
5471: my $result = &thaw_unescape($value);
5472: if (ref($result) eq 'HASH') {
5473: $returnhash{$key}=$result;
5474: } else {
5475: my @responses = split(/:/,$value);
5476: my @items = ('description','inst_code','owner','type');
5477: for (my $i=0; $i<@responses; $i++) {
5478: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
5479: }
5480: }
5481: }
5482: }
5483: }
5484: }
5485: return %returnhash;
5486: }
5487:
5488: sub courselastaccess {
5489: my ($cdom,$cnum,$hostidref) = @_;
5490: my %returnhash;
5491: if ($cdom && $cnum) {
5492: my $chome = &homeserver($cnum,$cdom);
5493: if ($chome ne 'no_host') {
5494: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
5495: &extract_lastaccess(\%returnhash,$rep);
5496: }
5497: } else {
5498: if (!$cdom) { $cdom=''; }
5499: my %libserv = &all_library();
5500: foreach my $tryserver (keys(%libserv)) {
5501: if (ref($hostidref) eq 'ARRAY') {
5502: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
5503: }
5504: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
5505: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
5506: &extract_lastaccess(\%returnhash,$rep);
5507: }
5508: }
5509: }
5510: return %returnhash;
5511: }
5512:
5513: sub extract_lastaccess {
5514: my ($returnhash,$rep) = @_;
5515: if (ref($returnhash) eq 'HASH') {
5516: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
5517: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
5518: $rep eq '') {
5519: my @pairs=split(/\&/,$rep);
5520: foreach my $item (@pairs) {
5521: my ($key,$value)=split(/\=/,$item,2);
5522: $key = &unescape($key);
5523: next if ($key =~ /^error: 2 /);
5524: $returnhash->{$key} = &thaw_unescape($value);
5525: }
5526: }
5527: }
5528: return;
5529: }
5530:
5531: # ---------------------------------------------------------- DC e-mail
5532:
5533: sub dcmailput {
5534: my ($domain,$msgid,$message,$server)=@_;
5535: my $status = &Apache::lonnet::critical(
5536: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
5537: &escape($message),$server);
5538: return $status;
5539: }
5540:
5541: sub dcmaildump {
5542: my ($dom,$startdate,$enddate,$senders) = @_;
5543: my %returnhash=();
5544:
5545: if (defined(&domain($dom,'primary'))) {
5546: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
5547: &escape($enddate).':';
5548: my @esc_senders=map { &escape($_)} @$senders;
5549: $cmd.=&escape(join('&',@esc_senders));
5550: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
5551: my ($key,$value) = split(/\=/,$line,2);
5552: if (($key) && ($value)) {
5553: $returnhash{&unescape($key)} = &unescape($value);
5554: }
5555: }
5556: }
5557: return %returnhash;
5558: }
5559: # ---------------------------------------------------------- Domain roles
5560:
5561: sub get_domain_roles {
5562: my ($dom,$roles,$startdate,$enddate)=@_;
5563: if ((!defined($startdate)) || ($startdate eq '')) {
5564: $startdate = '.';
5565: }
5566: if ((!defined($enddate)) || ($enddate eq '')) {
5567: $enddate = '.';
5568: }
5569: my $rolelist;
5570: if (ref($roles) eq 'ARRAY') {
5571: $rolelist = join('&',@{$roles});
5572: }
5573: my %personnel = ();
5574:
5575: my %servers = &get_servers($dom,'library');
5576: foreach my $tryserver (keys(%servers)) {
5577: %{$personnel{$tryserver}}=();
5578: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
5579: &escape($startdate).':'.
5580: &escape($enddate).':'.
5581: &escape($rolelist), $tryserver))) {
5582: my ($key,$value) = split(/\=/,$line,2);
5583: if (($key) && ($value)) {
5584: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
5585: }
5586: }
5587: }
5588: return %personnel;
5589: }
5590:
5591: sub get_active_domroles {
5592: my ($dom,$roles) = @_;
5593: return () unless (ref($roles) eq 'ARRAY');
5594: my $now = time;
5595: my %dompersonnel = &get_domain_roles($dom,$roles,$now,$now);
5596: my %domroles;
5597: foreach my $server (keys(%dompersonnel)) {
5598: foreach my $user (sort(keys(%{$dompersonnel{$server}}))) {
5599: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,$user);
5600: $domroles{$uname.':'.$udom} = $dompersonnel{$server}{$user};
5601: }
5602: }
5603: return %domroles;
5604: }
5605:
5606: # ----------------------------------------------------------- Interval timing
5607:
5608: {
5609: # Caches needed for speedup of navmaps
5610: # We don't want to cache this for very long at all (5 seconds at most)
5611: #
5612: # The user for whom we cache
5613: my $cachedkey='';
5614: # The cached times for this user
5615: my %cachedtimes=();
5616: # When this was last done
5617: my $cachedtime='';
5618:
5619: sub load_all_first_access {
5620: my ($uname,$udom,$ignorecache)=@_;
5621: if (($cachedkey eq $uname.':'.$udom) &&
5622: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'}) &&
5623: (!$ignorecache)) {
5624: return;
5625: }
5626: $cachedtime=time;
5627: $cachedkey=$uname.':'.$udom;
5628: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
5629: }
5630:
5631: sub get_first_access {
5632: my ($type,$argsymb,$argmap,$ignorecache)=@_;
5633: my ($symb,$courseid,$udom,$uname)=&whichuser();
5634: if ($argsymb) { $symb=$argsymb; }
5635: my ($map,$id,$res)=&decode_symb($symb);
5636: if ($argmap) { $map = $argmap; }
5637: if ($type eq 'course') {
5638: $res='course';
5639: } elsif ($type eq 'map') {
5640: $res=&symbread($map);
5641: } else {
5642: $res=$symb;
5643: }
5644: &load_all_first_access($uname,$udom,$ignorecache);
5645: return $cachedtimes{"$courseid\0$res"};
5646: }
5647:
5648: sub set_first_access {
5649: my ($type,$interval)=@_;
5650: my ($symb,$courseid,$udom,$uname)=&whichuser();
5651: my ($map,$id,$res)=&decode_symb($symb);
5652: if ($type eq 'course') {
5653: $res='course';
5654: } elsif ($type eq 'map') {
5655: $res=&symbread($map);
5656: } else {
5657: $res=$symb;
5658: }
5659: $cachedkey='';
5660: my $firstaccess=&get_first_access($type,$symb,$map);
5661: if ($firstaccess) {
5662: &logthis("First access time already set ($firstaccess) when attempting ".
5663: "to set new value (type: $type, extent: $res) for $uname:$udom ".
5664: "in $courseid");
5665: return 'already_set';
5666: } else {
5667: my $start = time;
5668: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
5669: $udom,$uname);
5670: if ($putres eq 'ok') {
5671: &put('timerinterval',{"$courseid\0$res"=>$interval},
5672: $udom,$uname);
5673: &appenv(
5674: {
5675: 'course.'.$courseid.'.firstaccess.'.$res => $start,
5676: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
5677: }
5678: );
5679: if (($cachedtime) && (abs($start-$cachedtime) < 5)) {
5680: $cachedtimes{"$courseid\0$res"} = $start;
5681: }
5682: } elsif ($putres ne 'refused') {
5683: &logthis("Result: $putres when attempting to set first access time ".
5684: "(type: $type, extent: $res) for $uname:$udom in $courseid");
5685: }
5686: return $putres;
5687: }
5688: return 'already_set';
5689: }
5690: }
5691:
5692: # --------------------------------------------- Set Expire Date for Spreadsheet
5693:
5694: sub expirespread {
5695: my ($uname,$udom,$stype,$usymb)=@_;
5696: my $cid=$env{'request.course.id'};
5697: if ($cid) {
5698: my $now=time;
5699: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
5700: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
5701: $env{'course.'.$cid.'.num'}.
5702: ':nohist_expirationdates:'.
5703: &escape($key).'='.$now,
5704: $env{'course.'.$cid.'.home'})
5705: }
5706: return 'ok';
5707: }
5708:
5709: # ----------------------------------------------------- Devalidate Spreadsheets
5710:
5711: sub devalidate {
5712: my ($symb,$uname,$udom)=@_;
5713: my $cid=$env{'request.course.id'};
5714: if ($cid) {
5715: # delete the stored spreadsheets for
5716: # - the student level sheet of this user in course's homespace
5717: # - the assessment level sheet for this resource
5718: # for this user in user's homespace
5719: # - current conditional state info
5720: my $key=$uname.':'.$udom.':';
5721: my $status=
5722: &del('nohist_calculatedsheets',
5723: [$key.'studentcalc:'],
5724: $env{'course.'.$cid.'.domain'},
5725: $env{'course.'.$cid.'.num'})
5726: .' '.
5727: &del('nohist_calculatedsheets_'.$cid,
5728: [$key.'assesscalc:'.$symb],$udom,$uname);
5729: unless ($status eq 'ok ok') {
5730: &logthis('Could not devalidate spreadsheet '.
5731: $uname.' at '.$udom.' for '.
5732: $symb.': '.$status);
5733: }
5734: &delenv('user.state.'.$cid);
5735: }
5736: }
5737:
5738: sub get_scalar {
5739: my ($string,$end) = @_;
5740: my $value;
5741: if ($$string =~ s/^([^&]*?)($end)/$2/) {
5742: $value = $1;
5743: } elsif ($$string =~ s/^([^&]*?)&//) {
5744: $value = $1;
5745: }
5746: return &unescape($value);
5747: }
5748:
5749: sub array2str {
5750: my (@array) = @_;
5751: my $result=&arrayref2str(\@array);
5752: $result=~s/^__ARRAY_REF__//;
5753: $result=~s/__END_ARRAY_REF__$//;
5754: return $result;
5755: }
5756:
5757: sub arrayref2str {
5758: my ($arrayref) = @_;
5759: my $result='__ARRAY_REF__';
5760: foreach my $elem (@$arrayref) {
5761: if(ref($elem) eq 'ARRAY') {
5762: $result.=&arrayref2str($elem).'&';
5763: } elsif(ref($elem) eq 'HASH') {
5764: $result.=&hashref2str($elem).'&';
5765: } elsif(ref($elem)) {
5766: #print("Got a ref of ".(ref($elem))." skipping.");
5767: } else {
5768: $result.=&escape($elem).'&';
5769: }
5770: }
5771: $result=~s/\&$//;
5772: $result .= '__END_ARRAY_REF__';
5773: return $result;
5774: }
5775:
5776: sub hash2str {
5777: my (%hash) = @_;
5778: my $result=&hashref2str(\%hash);
5779: $result=~s/^__HASH_REF__//;
5780: $result=~s/__END_HASH_REF__$//;
5781: return $result;
5782: }
5783:
5784: sub hashref2str {
5785: my ($hashref)=@_;
5786: my $result='__HASH_REF__';
5787: foreach my $key (sort(keys(%$hashref))) {
5788: if (ref($key) eq 'ARRAY') {
5789: $result.=&arrayref2str($key).'=';
5790: } elsif (ref($key) eq 'HASH') {
5791: $result.=&hashref2str($key).'=';
5792: } elsif (ref($key)) {
5793: $result.='=';
5794: #print("Got a ref of ".(ref($key))." skipping.");
5795: } else {
5796: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
5797: }
5798:
5799: if(ref($hashref->{$key}) eq 'ARRAY') {
5800: $result.=&arrayref2str($hashref->{$key}).'&';
5801: } elsif(ref($hashref->{$key}) eq 'HASH') {
5802: $result.=&hashref2str($hashref->{$key}).'&';
5803: } elsif(ref($hashref->{$key})) {
5804: $result.='&';
5805: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
5806: } else {
5807: $result.=&escape($hashref->{$key}).'&';
5808: }
5809: }
5810: $result=~s/\&$//;
5811: $result .= '__END_HASH_REF__';
5812: return $result;
5813: }
5814:
5815: sub str2hash {
5816: my ($string)=@_;
5817: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
5818: return %$hash;
5819: }
5820:
5821: sub str2hashref {
5822: my ($string) = @_;
5823:
5824: my %hash;
5825:
5826: if($string !~ /^__HASH_REF__/) {
5827: if (! ($string eq '' || !defined($string))) {
5828: $hash{'error'}='Not hash reference';
5829: }
5830: return (\%hash, $string);
5831: }
5832:
5833: $string =~ s/^__HASH_REF__//;
5834:
5835: while($string !~ /^__END_HASH_REF__/) {
5836: #key
5837: my $key='';
5838: if($string =~ /^__HASH_REF__/) {
5839: ($key, $string)=&str2hashref($string);
5840: if(defined($key->{'error'})) {
5841: $hash{'error'}='Bad data';
5842: return (\%hash, $string);
5843: }
5844: } elsif($string =~ /^__ARRAY_REF__/) {
5845: ($key, $string)=&str2arrayref($string);
5846: if($key->[0] eq 'Array reference error') {
5847: $hash{'error'}='Bad data';
5848: return (\%hash, $string);
5849: }
5850: } else {
5851: $string =~ s/^(.*?)=//;
5852: $key=&unescape($1);
5853: }
5854: $string =~ s/^=//;
5855:
5856: #value
5857: my $value='';
5858: if($string =~ /^__HASH_REF__/) {
5859: ($value, $string)=&str2hashref($string);
5860: if(defined($value->{'error'})) {
5861: $hash{'error'}='Bad data';
5862: return (\%hash, $string);
5863: }
5864: } elsif($string =~ /^__ARRAY_REF__/) {
5865: ($value, $string)=&str2arrayref($string);
5866: if($value->[0] eq 'Array reference error') {
5867: $hash{'error'}='Bad data';
5868: return (\%hash, $string);
5869: }
5870: } else {
5871: $value=&get_scalar(\$string,'__END_HASH_REF__');
5872: }
5873: $string =~ s/^&//;
5874:
5875: $hash{$key}=$value;
5876: }
5877:
5878: $string =~ s/^__END_HASH_REF__//;
5879:
5880: return (\%hash, $string);
5881: }
5882:
5883: sub str2array {
5884: my ($string)=@_;
5885: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
5886: return @$array;
5887: }
5888:
5889: sub str2arrayref {
5890: my ($string) = @_;
5891: my @array;
5892:
5893: if($string !~ /^__ARRAY_REF__/) {
5894: if (! ($string eq '' || !defined($string))) {
5895: $array[0]='Array reference error';
5896: }
5897: return (\@array, $string);
5898: }
5899:
5900: $string =~ s/^__ARRAY_REF__//;
5901:
5902: while($string !~ /^__END_ARRAY_REF__/) {
5903: my $value='';
5904: if($string =~ /^__HASH_REF__/) {
5905: ($value, $string)=&str2hashref($string);
5906: if(defined($value->{'error'})) {
5907: $array[0] ='Array reference error';
5908: return (\@array, $string);
5909: }
5910: } elsif($string =~ /^__ARRAY_REF__/) {
5911: ($value, $string)=&str2arrayref($string);
5912: if($value->[0] eq 'Array reference error') {
5913: $array[0] ='Array reference error';
5914: return (\@array, $string);
5915: }
5916: } else {
5917: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
5918: }
5919: $string =~ s/^&//;
5920:
5921: push(@array, $value);
5922: }
5923:
5924: $string =~ s/^__END_ARRAY_REF__//;
5925:
5926: return (\@array, $string);
5927: }
5928:
5929: # -------------------------------------------------------------------Temp Store
5930:
5931: sub tmpreset {
5932: my ($symb,$namespace,$domain,$stuname) = @_;
5933: if (!$symb) {
5934: $symb=&symbread();
5935: if (!$symb) { $symb= $env{'request.url'}; }
5936: }
5937: $symb=escape($symb);
5938:
5939: if (!$namespace) { $namespace=$env{'request.state'}; }
5940: $namespace=~s/\//\_/g;
5941: $namespace=~s/\W//g;
5942:
5943: if (!$domain) { $domain=$env{'user.domain'}; }
5944: if (!$stuname) { $stuname=$env{'user.name'}; }
5945: if ($domain eq 'public' && $stuname eq 'public') {
5946: $stuname=$ENV{'REMOTE_ADDR'};
5947: }
5948: my $path=LONCAPA::tempdir();
5949: my %hash;
5950: if (tie(%hash,'GDBM_File',
5951: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5952: &GDBM_WRCREAT(),0640)) {
5953: foreach my $key (keys(%hash)) {
5954: if ($key=~ /:$symb/) {
5955: delete($hash{$key});
5956: }
5957: }
5958: }
5959: }
5960:
5961: sub tmpstore {
5962: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
5963:
5964: if (!$symb) {
5965: $symb=&symbread();
5966: if (!$symb) { $symb= $env{'request.url'}; }
5967: }
5968: $symb=escape($symb);
5969:
5970: if (!$namespace) {
5971: # I don't think we would ever want to store this for a course.
5972: # it seems this will only be used if we don't have a course.
5973: #$namespace=$env{'request.course.id'};
5974: #if (!$namespace) {
5975: $namespace=$env{'request.state'};
5976: #}
5977: }
5978: $namespace=~s/\//\_/g;
5979: $namespace=~s/\W//g;
5980: if (!$domain) { $domain=$env{'user.domain'}; }
5981: if (!$stuname) { $stuname=$env{'user.name'}; }
5982: if ($domain eq 'public' && $stuname eq 'public') {
5983: $stuname=$ENV{'REMOTE_ADDR'};
5984: }
5985: my $now=time;
5986: my %hash;
5987: my $path=LONCAPA::tempdir();
5988: if (tie(%hash,'GDBM_File',
5989: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5990: &GDBM_WRCREAT(),0640)) {
5991: $hash{"version:$symb"}++;
5992: my $version=$hash{"version:$symb"};
5993: my $allkeys='';
5994: foreach my $key (keys(%$storehash)) {
5995: $allkeys.=$key.':';
5996: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
5997: }
5998: $hash{"$version:$symb:timestamp"}=$now;
5999: $allkeys.='timestamp';
6000: $hash{"$version:keys:$symb"}=$allkeys;
6001: if (untie(%hash)) {
6002: return 'ok';
6003: } else {
6004: return "error:$!";
6005: }
6006: } else {
6007: return "error:$!";
6008: }
6009: }
6010:
6011: # -----------------------------------------------------------------Temp Restore
6012:
6013: sub tmprestore {
6014: my ($symb,$namespace,$domain,$stuname) = @_;
6015:
6016: if (!$symb) {
6017: $symb=&symbread();
6018: if (!$symb) { $symb= $env{'request.url'}; }
6019: }
6020: $symb=escape($symb);
6021:
6022: if (!$namespace) { $namespace=$env{'request.state'}; }
6023:
6024: if (!$domain) { $domain=$env{'user.domain'}; }
6025: if (!$stuname) { $stuname=$env{'user.name'}; }
6026: if ($domain eq 'public' && $stuname eq 'public') {
6027: $stuname=$ENV{'REMOTE_ADDR'};
6028: }
6029: my %returnhash;
6030: $namespace=~s/\//\_/g;
6031: $namespace=~s/\W//g;
6032: my %hash;
6033: my $path=LONCAPA::tempdir();
6034: if (tie(%hash,'GDBM_File',
6035: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
6036: &GDBM_READER(),0640)) {
6037: my $version=$hash{"version:$symb"};
6038: $returnhash{'version'}=$version;
6039: my $scope;
6040: for ($scope=1;$scope<=$version;$scope++) {
6041: my $vkeys=$hash{"$scope:keys:$symb"};
6042: my @keys=split(/:/,$vkeys);
6043: my $key;
6044: $returnhash{"$scope:keys"}=$vkeys;
6045: foreach $key (@keys) {
6046: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
6047: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
6048: }
6049: }
6050: if (!(untie(%hash))) {
6051: return "error:$!";
6052: }
6053: } else {
6054: return "error:$!";
6055: }
6056: return %returnhash;
6057: }
6058:
6059: # ----------------------------------------------------------------------- Store
6060:
6061: sub store {
6062: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
6063: my $home='';
6064:
6065: if ($stuname) { $home=&homeserver($stuname,$domain); }
6066:
6067: $symb=&symbclean($symb);
6068: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
6069:
6070: if (!$domain) { $domain=$env{'user.domain'}; }
6071: if (!$stuname) { $stuname=$env{'user.name'}; }
6072:
6073: &devalidate($symb,$stuname,$domain);
6074:
6075: $symb=escape($symb);
6076: if (!$namespace) {
6077: unless ($namespace=$env{'request.course.id'}) {
6078: return '';
6079: }
6080: }
6081: if (!$home) { $home=$env{'user.home'}; }
6082:
6083: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
6084: $$storehash{'host'}=$perlvar{'lonHostID'};
6085:
6086: my $namevalue='';
6087: foreach my $key (keys(%$storehash)) {
6088: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6089: }
6090: $namevalue=~s/\&$//;
6091: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
6092: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
6093: }
6094:
6095: # -------------------------------------------------------------- Critical Store
6096:
6097: sub cstore {
6098: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
6099: my $home='';
6100:
6101: if ($stuname) { $home=&homeserver($stuname,$domain); }
6102:
6103: $symb=&symbclean($symb);
6104: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
6105:
6106: if (!$domain) { $domain=$env{'user.domain'}; }
6107: if (!$stuname) { $stuname=$env{'user.name'}; }
6108:
6109: &devalidate($symb,$stuname,$domain);
6110:
6111: $symb=escape($symb);
6112: if (!$namespace) {
6113: unless ($namespace=$env{'request.course.id'}) {
6114: return '';
6115: }
6116: }
6117: if (!$home) { $home=$env{'user.home'}; }
6118:
6119: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
6120: $$storehash{'host'}=$perlvar{'lonHostID'};
6121:
6122: my $namevalue='';
6123: foreach my $key (keys(%$storehash)) {
6124: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6125: }
6126: $namevalue=~s/\&$//;
6127: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
6128: return critical
6129: ("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
6130: }
6131:
6132: # --------------------------------------------------------------------- Restore
6133:
6134: sub restore {
6135: my ($symb,$namespace,$domain,$stuname) = @_;
6136: my $home='';
6137:
6138: if ($stuname) { $home=&homeserver($stuname,$domain); }
6139:
6140: if (!$symb) {
6141: return if ($namespace eq 'courserequests');
6142: unless ($symb=escape(&symbread())) { return ''; }
6143: } else {
6144: unless ($namespace eq 'courserequests') {
6145: $symb=&escape(&symbclean($symb));
6146: }
6147: }
6148: if (!$namespace) {
6149: unless ($namespace=$env{'request.course.id'}) {
6150: return '';
6151: }
6152: }
6153: if (!$domain) { $domain=$env{'user.domain'}; }
6154: if (!$stuname) { $stuname=$env{'user.name'}; }
6155: if (!$home) { $home=$env{'user.home'}; }
6156: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
6157:
6158: my %returnhash=();
6159: foreach my $line (split(/\&/,$answer)) {
6160: my ($name,$value)=split(/\=/,$line);
6161: $returnhash{&unescape($name)}=&thaw_unescape($value);
6162: }
6163: my $version;
6164: for ($version=1;$version<=$returnhash{'version'};$version++) {
6165: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
6166: $returnhash{$item}=$returnhash{$version.':'.$item};
6167: }
6168: }
6169: return %returnhash;
6170: }
6171:
6172: # ---------------------------------------------------------- Course Description
6173: #
6174: #
6175:
6176: sub coursedescription {
6177: my ($courseid,$args)=@_;
6178: $courseid=~s/^\///;
6179: $courseid=~s/\_/\//g;
6180: my ($cdomain,$cnum)=split(/\//,$courseid);
6181: my $chome=&homeserver($cnum,$cdomain);
6182: my $normalid=$cdomain.'_'.$cnum;
6183: # need to always cache even if we get errors otherwise we keep
6184: # trying and trying and trying to get the course description.
6185: my %envhash=();
6186: my %returnhash=();
6187:
6188: my $expiretime=600;
6189: if ($env{'request.course.id'} eq $normalid) {
6190: $expiretime=120;
6191: }
6192:
6193: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
6194: if (!$args->{'freshen_cache'}
6195: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
6196: foreach my $key (keys(%env)) {
6197: next if ($key !~ /^\Q$prefix\E(.*)/);
6198: my ($setting) = $1;
6199: $returnhash{$setting} = $env{$key};
6200: }
6201: return %returnhash;
6202: }
6203:
6204: # get the data again
6205:
6206: if (!$args->{'one_time'}) {
6207: $envhash{'course.'.$normalid.'.last_cache'}=time;
6208: }
6209:
6210: if ($chome ne 'no_host') {
6211: %returnhash=&dump('environment',$cdomain,$cnum);
6212: if (!exists($returnhash{'con_lost'})) {
6213: my $username = $env{'user.name'}; # Defult username
6214: if(defined $args->{'user'}) {
6215: $username = $args->{'user'};
6216: }
6217: $returnhash{'home'}= $chome;
6218: $returnhash{'domain'} = $cdomain;
6219: $returnhash{'num'} = $cnum;
6220: if (!defined($returnhash{'type'})) {
6221: $returnhash{'type'} = 'Course';
6222: }
6223: while (my ($name,$value) = each %returnhash) {
6224: $envhash{'course.'.$normalid.'.'.$name}=$value;
6225: }
6226: $returnhash{'url'}=&clutter($returnhash{'url'});
6227: $returnhash{'fn'}=LONCAPA::tempdir() .
6228: $username.'_'.$cdomain.'_'.$cnum;
6229: $envhash{'course.'.$normalid.'.home'}=$chome;
6230: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
6231: $envhash{'course.'.$normalid.'.num'}=$cnum;
6232: }
6233: }
6234: if (!$args->{'one_time'}) {
6235: &appenv(\%envhash);
6236: }
6237: return %returnhash;
6238: }
6239:
6240: sub update_released_required {
6241: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
6242: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
6243: $cid = $env{'request.course.id'};
6244: $cdom = $env{'course.'.$cid.'.domain'};
6245: $cnum = $env{'course.'.$cid.'.num'};
6246: $chome = $env{'course.'.$cid.'.home'};
6247: }
6248: if ($needsrelease) {
6249: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
6250: my $needsupdate;
6251: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
6252: $needsupdate = 1;
6253: } else {
6254: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
6255: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
6256: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
6257: $needsupdate = 1;
6258: }
6259: }
6260: if ($needsupdate) {
6261: my %needshash = (
6262: 'internal.releaserequired' => $needsrelease,
6263: );
6264: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
6265: if ($putresult eq 'ok') {
6266: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
6267: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
6268: if (ref($crsinfo{$cid}) eq 'HASH') {
6269: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
6270: &courseidput($cdom,\%crsinfo,$chome,'notime');
6271: }
6272: }
6273: }
6274: }
6275: return;
6276: }
6277:
6278: # -------------------------------------------------See if a user is privileged
6279:
6280: sub privileged {
6281: my ($username,$domain,$possdomains,$possroles)=@_;
6282: my $now = time;
6283: my $roles;
6284: if (ref($possroles) eq 'ARRAY') {
6285: $roles = $possroles;
6286: } else {
6287: $roles = ['dc','su'];
6288: }
6289: if (ref($possdomains) eq 'ARRAY') {
6290: my %privileged = &privileged_by_domain($possdomains,$roles);
6291: foreach my $dom (@{$possdomains}) {
6292: if (($username =~ /^$match_username$/) && ($domain =~ /^$match_domain$/) &&
6293: (ref($privileged{$dom}) eq 'HASH')) {
6294: foreach my $role (@{$roles}) {
6295: if (ref($privileged{$dom}{$role}) eq 'HASH') {
6296: if (exists($privileged{$dom}{$role}{$username.':'.$domain})) {
6297: my ($end,$start) = split(/:/,$privileged{$dom}{$role}{$username.':'.$domain});
6298: return 1 unless (($end && $end < $now) ||
6299: ($start && $start > $now));
6300: }
6301: }
6302: }
6303: }
6304: }
6305: } else {
6306: my %rolesdump = &dump("roles", $domain, $username) or return 0;
6307: my $now = time;
6308:
6309: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys(%rolesdump)}) {
6310: my ($trole, $tend, $tstart) = split(/_/, $role);
6311: if (grep(/^\Q$trole\E$/,@{$roles})) {
6312: return 1 unless ($tend && $tend < $now)
6313: or ($tstart && $tstart > $now);
6314: }
6315: }
6316: }
6317: return 0;
6318: }
6319:
6320: sub privileged_by_domain {
6321: my ($domains,$roles) = @_;
6322: my %privileged = ();
6323: my $cachetime = 60*60*24;
6324: my $now = time;
6325: unless ((ref($domains) eq 'ARRAY') && (ref($roles) eq 'ARRAY')) {
6326: return %privileged;
6327: }
6328: foreach my $dom (@{$domains}) {
6329: next if (ref($privileged{$dom}) eq 'HASH');
6330: my $needroles;
6331: foreach my $role (@{$roles}) {
6332: my ($result,$cached)=&is_cached_new('priv_'.$role,$dom);
6333: if (defined($cached)) {
6334: if (ref($result) eq 'HASH') {
6335: $privileged{$dom}{$role} = $result;
6336: }
6337: } else {
6338: $needroles = 1;
6339: }
6340: }
6341: if ($needroles) {
6342: my %dompersonnel = &get_domain_roles($dom,$roles);
6343: $privileged{$dom} = {};
6344: foreach my $server (keys(%dompersonnel)) {
6345: if (ref($dompersonnel{$server}) eq 'HASH') {
6346: foreach my $item (keys(%{$dompersonnel{$server}})) {
6347: my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
6348: my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
6349: next if ($end && $end < $now);
6350: $privileged{$dom}{$trole}{$uname.':'.$udom} =
6351: $dompersonnel{$server}{$item};
6352: }
6353: }
6354: }
6355: if (ref($privileged{$dom}) eq 'HASH') {
6356: foreach my $role (@{$roles}) {
6357: if (ref($privileged{$dom}{$role}) eq 'HASH') {
6358: &do_cache_new('priv_'.$role,$dom,$privileged{$dom}{$role},$cachetime);
6359: } else {
6360: my %hash = ();
6361: &do_cache_new('priv_'.$role,$dom,\%hash,$cachetime);
6362: }
6363: }
6364: }
6365: }
6366: }
6367: return %privileged;
6368: }
6369:
6370: # -------------------------------------------------------- Get user privileges
6371:
6372: sub rolesinit {
6373: my ($domain, $username) = @_;
6374: my %userroles = ('user.login.time' => time);
6375: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
6376:
6377: # firstaccess and timerinterval are related to timed maps/resources.
6378: # also, blocking can be triggered by an activating timer
6379: # it's saved in the user's %env.
6380: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
6381: my %timerinterval = &dump('timerinterval', $domain, $username);
6382: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
6383: %timerintchk, %timerintenv);
6384:
6385: foreach my $key (keys(%firstaccess)) {
6386: my ($cid, $rest) = split(/\0/, $key);
6387: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
6388: }
6389:
6390: foreach my $key (keys(%timerinterval)) {
6391: my ($cid,$rest) = split(/\0/,$key);
6392: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
6393: }
6394:
6395: my %allroles=();
6396: my %allgroups=();
6397:
6398: for my $area (grep { ! /^rolesdef_/ } keys(%rolesdump)) {
6399: my $role = $rolesdump{$area};
6400: $area =~ s/\_\w\w$//;
6401:
6402: my ($trole, $tend, $tstart, $group_privs);
6403:
6404: if ($role =~ /^cr/) {
6405: # Custom role, defined by a user
6406: # e.g., user.role.cr/msu/smith/mynewrole
6407: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
6408: $trole = $1;
6409: ($tend, $tstart) = split('_', $2);
6410: } else {
6411: $trole = $role;
6412: }
6413: } elsif ($role =~ m|^gr/|) {
6414: # Role of member in a group, defined within a course/community
6415: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
6416: ($trole, $tend, $tstart) = split(/_/, $role);
6417: next if $tstart eq '-1';
6418: ($trole, $group_privs) = split(/\//, $trole);
6419: $group_privs = &unescape($group_privs);
6420: } else {
6421: # Just a normal role, defined in roles.tab
6422: ($trole, $tend, $tstart) = split(/_/,$role);
6423: }
6424:
6425: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
6426: $username);
6427: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
6428:
6429: # role expired or not available yet?
6430: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
6431: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
6432:
6433: next if $area eq '' or $trole eq '';
6434:
6435: my $spec = "$trole.$area";
6436: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
6437:
6438: if ($trole =~ /^cr\//) {
6439: # Custom role, defined by a user
6440: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
6441: } elsif ($trole eq 'gr') {
6442: # Role of a member in a group, defined within a course/community
6443: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
6444: next;
6445: } else {
6446: # Normal role, defined in roles.tab
6447: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
6448: }
6449:
6450: my $cid = $tdomain.'_'.$trest;
6451: unless ($firstaccchk{$cid}) {
6452: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
6453: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
6454: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
6455: $coursetimerstarts{$cid}{$item};
6456: }
6457: }
6458: $firstaccchk{$cid} = 1;
6459: }
6460: unless ($timerintchk{$cid}) {
6461: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
6462: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
6463: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
6464: $coursetimerintervals{$cid}{$item};
6465: }
6466: }
6467: $timerintchk{$cid} = 1;
6468: }
6469: }
6470:
6471: @userroles{'user.author','user.adv','user.rar'} = &set_userprivs(\%userroles,
6472: \%allroles, \%allgroups);
6473: $env{'user.adv'} = $userroles{'user.adv'};
6474: $env{'user.rar'} = $userroles{'user.rar'};
6475:
6476: return (\%userroles,\%firstaccenv,\%timerintenv);
6477: }
6478:
6479: sub set_arearole {
6480: my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
6481: unless ($nolog) {
6482: # log the associated role with the area
6483: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
6484: }
6485: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
6486: }
6487:
6488: sub custom_roleprivs {
6489: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
6490: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
6491: my $homsvr = &homeserver($rauthor,$rdomain);
6492: if (&hostname($homsvr) ne '') {
6493: my ($rdummy,$roledef)=
6494: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
6495: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
6496: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
6497: if (defined($syspriv)) {
6498: if ($trest =~ /^$match_community$/) {
6499: $syspriv =~ s/bre\&S//;
6500: }
6501: $$allroles{'cm./'}.=':'.$syspriv;
6502: $$allroles{$spec.'./'}.=':'.$syspriv;
6503: }
6504: if ($tdomain ne '') {
6505: if (defined($dompriv)) {
6506: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
6507: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
6508: }
6509: if (($trest ne '') && (defined($coursepriv))) {
6510: if ($trole =~ m{^cr/$tdomain/$tdomain\Q-domainconfig\E/([^/]+)$}) {
6511: my $rolename = $1;
6512: $coursepriv = &course_adhocrole_privs($rolename,$tdomain,$trest,$coursepriv);
6513: }
6514: $$allroles{'cm.'.$area}.=':'.$coursepriv;
6515: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
6516: }
6517: }
6518: }
6519: }
6520: }
6521:
6522: sub course_adhocrole_privs {
6523: my ($rolename,$cdom,$cnum,$coursepriv) = @_;
6524: my %overrides = &get('environment',["internal.adhocpriv.$rolename"],$cdom,$cnum);
6525: if ($overrides{"internal.adhocpriv.$rolename"}) {
6526: my (%currprivs,%storeprivs);
6527: foreach my $item (split(/:/,$coursepriv)) {
6528: my ($priv,$restrict) = split(/\&/,$item);
6529: $currprivs{$priv} = $restrict;
6530: }
6531: my (%possadd,%possremove,%full);
6532: foreach my $item (split(/\:/,$Apache::lonnet::pr{'cr:c'})) {
6533: my ($priv,$restrict)=split(/\&/,$item);
6534: $full{$priv} = $restrict;
6535: }
6536: foreach my $item (split(/,/,$overrides{"internal.adhocpriv.$rolename"})) {
6537: next if ($item eq '');
6538: my ($rule,$rest) = split(/=/,$item);
6539: next unless (($rule eq 'off') || ($rule eq 'on'));
6540: foreach my $priv (split(/:/,$rest)) {
6541: if ($priv ne '') {
6542: if ($rule eq 'off') {
6543: $possremove{$priv} = 1;
6544: } else {
6545: $possadd{$priv} = 1;
6546: }
6547: }
6548: }
6549: }
6550: foreach my $priv (sort(keys(%full))) {
6551: if (exists($currprivs{$priv})) {
6552: unless (exists($possremove{$priv})) {
6553: $storeprivs{$priv} = $currprivs{$priv};
6554: }
6555: } elsif (exists($possadd{$priv})) {
6556: $storeprivs{$priv} = $full{$priv};
6557: }
6558: }
6559: $coursepriv = ':'.join(':',map { $_.'&'.$storeprivs{$_}; } sort(keys(%storeprivs)));
6560: }
6561: return $coursepriv;
6562: }
6563:
6564: sub group_roleprivs {
6565: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
6566: my $access = 1;
6567: my $now = time;
6568: if (($tend!=0) && ($tend<$now)) { $access = 0; }
6569: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
6570: if ($access) {
6571: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
6572: $$allgroups{$course}{$group} .=':'.$group_privs;
6573: }
6574: }
6575:
6576: sub standard_roleprivs {
6577: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
6578: if (defined($pr{$trole.':s'})) {
6579: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
6580: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
6581: }
6582: if ($tdomain ne '') {
6583: if (defined($pr{$trole.':d'})) {
6584: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
6585: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
6586: }
6587: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
6588: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
6589: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
6590: }
6591: }
6592: }
6593:
6594: sub set_userprivs {
6595: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
6596: my $author=0;
6597: my $adv=0;
6598: my $rar=0;
6599: my %grouproles = ();
6600: if (keys(%{$allgroups}) > 0) {
6601: my @groupkeys;
6602: foreach my $role (keys(%{$allroles})) {
6603: push(@groupkeys,$role);
6604: }
6605: if (ref($groups_roles) eq 'HASH') {
6606: foreach my $key (keys(%{$groups_roles})) {
6607: unless (grep(/^\Q$key\E$/,@groupkeys)) {
6608: push(@groupkeys,$key);
6609: }
6610: }
6611: }
6612: if (@groupkeys > 0) {
6613: foreach my $role (@groupkeys) {
6614: my ($trole,$area,$sec,$extendedarea);
6615: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
6616: $trole = $1;
6617: $area = $2;
6618: $sec = $3;
6619: $extendedarea = $area.$sec;
6620: if (exists($$allgroups{$area})) {
6621: foreach my $group (keys(%{$$allgroups{$area}})) {
6622: my $spec = $trole.'.'.$extendedarea;
6623: $grouproles{$spec.'.'.$area.'/'.$group} =
6624: $$allgroups{$area}{$group};
6625: }
6626: }
6627: }
6628: }
6629: }
6630: }
6631: foreach my $group (keys(%grouproles)) {
6632: $$allroles{$group} = $grouproles{$group};
6633: }
6634: foreach my $role (keys(%{$allroles})) {
6635: my %thesepriv;
6636: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
6637: foreach my $item (split(/:/,$$allroles{$role})) {
6638: if ($item ne '') {
6639: my ($privilege,$restrictions)=split(/&/,$item);
6640: if ($restrictions eq '') {
6641: $thesepriv{$privilege}='F';
6642: } elsif ($thesepriv{$privilege} ne 'F') {
6643: $thesepriv{$privilege}.=$restrictions;
6644: }
6645: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
6646: if ($thesepriv{'rar'} eq 'F') { $rar=1; }
6647: }
6648: }
6649: my $thesestr='';
6650: foreach my $priv (sort(keys(%thesepriv))) {
6651: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
6652: }
6653: $userroles->{'user.priv.'.$role} = $thesestr;
6654: }
6655: return ($author,$adv,$rar);
6656: }
6657:
6658: sub role_status {
6659: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
6660: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
6661: my ($one,$two) = split(m{\./},$rolekey,2);
6662: (undef,undef,$$role) = split(/\./,$one,3);
6663: unless (!defined($$role) || $$role eq '') {
6664: $$where = '/'.$two;
6665: $$trolecode=$$role.'.'.$$where;
6666: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
6667: $$tstatus='is';
6668: if ($$tstart && $$tstart>$update) {
6669: $$tstatus='future';
6670: if ($$tstart<$now) {
6671: if ($$tstart && $$tstart>$refresh) {
6672: if (($$where ne '') && ($$role ne '')) {
6673: my (%allroles,%allgroups,$group_privs,
6674: %groups_roles,@rolecodes);
6675: my %userroles = (
6676: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
6677: );
6678: @rolecodes = ('cm');
6679: my $spec=$$role.'.'.$$where;
6680: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
6681: if ($$role =~ /^cr\//) {
6682: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
6683: push(@rolecodes,'cr');
6684: } elsif ($$role eq 'gr') {
6685: push(@rolecodes,$$role);
6686: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
6687: $env{'user.name'});
6688: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
6689: (undef,my $group_privs) = split(/\//,$trole);
6690: $group_privs = &unescape($group_privs);
6691: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
6692: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
6693: &get_groups_roles($tdomain,$trest,
6694: \%course_roles,\@rolecodes,
6695: \%groups_roles);
6696: } else {
6697: push(@rolecodes,$$role);
6698: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
6699: }
6700: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%allroles,\%allgroups,
6701: \%groups_roles);
6702: &appenv(\%userroles,\@rolecodes);
6703: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
6704: }
6705: }
6706: $$tstatus = 'is';
6707: }
6708: }
6709: if ($$tend) {
6710: if ($$tend<$update) {
6711: $$tstatus='expired';
6712: } elsif ($$tend<$now) {
6713: $$tstatus='will_not';
6714: }
6715: }
6716: }
6717: }
6718: }
6719:
6720: sub get_groups_roles {
6721: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
6722: return unless((ref($cdom_courseroles) eq 'HASH') &&
6723: (ref($rolecodes) eq 'ARRAY') &&
6724: (ref($groups_roles) eq 'HASH'));
6725: if (keys(%{$cdom_courseroles}) > 0) {
6726: my ($cnum) = ($rest =~ /^($match_courseid)/);
6727: if ($cdom ne '' && $cnum ne '') {
6728: foreach my $key (keys(%{$cdom_courseroles})) {
6729: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
6730: my $crsrole = $1;
6731: my $crssec = $2;
6732: if ($crsrole =~ /^cr/) {
6733: unless (grep(/^cr$/,@{$rolecodes})) {
6734: push(@{$rolecodes},'cr');
6735: }
6736: } else {
6737: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
6738: push(@{$rolecodes},$crsrole);
6739: }
6740: }
6741: my $rolekey = "$crsrole./$cdom/$cnum";
6742: if ($crssec ne '') {
6743: $rolekey .= "/$crssec";
6744: }
6745: $rolekey .= './';
6746: $groups_roles->{$rolekey} = $rolecodes;
6747: }
6748: }
6749: }
6750: }
6751: return;
6752: }
6753:
6754: sub delete_env_groupprivs {
6755: my ($where,$courseroles,$possroles) = @_;
6756: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
6757: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
6758: unless (ref($courseroles->{$udom}) eq 'HASH') {
6759: %{$courseroles->{$udom}} =
6760: &get_my_roles('','','userroles',['active'],
6761: $possroles,[$udom],1);
6762: }
6763: if (ref($courseroles->{$udom}) eq 'HASH') {
6764: foreach my $item (keys(%{$courseroles->{$udom}})) {
6765: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
6766: my $area = '/'.$cdom.'/'.$cnum;
6767: my $privkey = "user.priv.$crsrole.$area";
6768: if ($crssec ne '') {
6769: $privkey .= '/'.$crssec;
6770: }
6771: $privkey .= ".$area/$group";
6772: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
6773: }
6774: }
6775: return;
6776: }
6777:
6778: sub check_adhoc_privs {
6779: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller,$sec) = @_;
6780: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
6781: if ($sec) {
6782: $cckey .= '/'.$sec;
6783: }
6784: my $setprivs;
6785: if ($env{$cckey}) {
6786: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
6787: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
6788: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
6789: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
6790: $setprivs = 1;
6791: }
6792: } else {
6793: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
6794: $setprivs = 1;
6795: }
6796: return $setprivs;
6797: }
6798:
6799: sub set_adhoc_privileges {
6800: # role can be cc, ca, or cr/<dom>/<dom>-domainconfig/role
6801: my ($dcdom,$pickedcourse,$role,$caller,$sec) = @_;
6802: my $area = '/'.$dcdom.'/'.$pickedcourse;
6803: if ($sec ne '') {
6804: $area .= '/'.$sec;
6805: }
6806: my $spec = $role.'.'.$area;
6807: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
6808: $env{'user.name'},1);
6809: my %rolehash = ();
6810: if ($role =~ m{^\Qcr/$dcdom/$dcdom\E\-domainconfig/(\w+)$}) {
6811: my $rolename = $1;
6812: &custom_roleprivs(\%rolehash,$role,$dcdom,$pickedcourse,$spec,$area);
6813: my %domdef = &get_domain_defaults($dcdom);
6814: if (ref($domdef{'adhocroles'}) eq 'HASH') {
6815: if (ref($domdef{'adhocroles'}{$rolename}) eq 'HASH') {
6816: &appenv({'request.role.desc' => $domdef{'adhocroles'}{$rolename}{'desc'},});
6817: }
6818: }
6819: } else {
6820: &standard_roleprivs(\%rolehash,$role,$dcdom,$spec,$pickedcourse,$area);
6821: }
6822: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%rolehash);
6823: &appenv(\%userroles,[$role,'cm']);
6824: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
6825: unless (($caller eq 'constructaccess' && $env{'request.course.id'}) ||
6826: ($caller eq 'tiny')) {
6827: &appenv( {'request.role' => $spec,
6828: 'request.role.domain' => $dcdom,
6829: 'request.course.sec' => $sec,
6830: }
6831: );
6832: my $tadv=0;
6833: if (&allowed('adv') eq 'F') { $tadv=1; }
6834: &appenv({'request.role.adv' => $tadv});
6835: }
6836: }
6837:
6838: # --------------------------------------------------------------- get interface
6839:
6840: sub get {
6841: my ($namespace,$storearr,$udomain,$uname)=@_;
6842: my $items='';
6843: foreach my $item (@$storearr) {
6844: $items.=&escape($item).'&';
6845: }
6846: $items=~s/\&$//;
6847: if (!$udomain) { $udomain=$env{'user.domain'}; }
6848: if (!$uname) { $uname=$env{'user.name'}; }
6849: my $uhome=&homeserver($uname,$udomain);
6850:
6851: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
6852: my @pairs=split(/\&/,$rep);
6853: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
6854: return @pairs;
6855: }
6856: my %returnhash=();
6857: my $i=0;
6858: foreach my $item (@$storearr) {
6859: $returnhash{$item}=&thaw_unescape($pairs[$i]);
6860: $i++;
6861: }
6862: return %returnhash;
6863: }
6864:
6865: # --------------------------------------------------------------- del interface
6866:
6867: sub del {
6868: my ($namespace,$storearr,$udomain,$uname)=@_;
6869: my $items='';
6870: foreach my $item (@$storearr) {
6871: $items.=&escape($item).'&';
6872: }
6873:
6874: $items=~s/\&$//;
6875: if (!$udomain) { $udomain=$env{'user.domain'}; }
6876: if (!$uname) { $uname=$env{'user.name'}; }
6877: my $uhome=&homeserver($uname,$udomain);
6878: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
6879: }
6880:
6881: # -------------------------------------------------------------- dump interface
6882:
6883: sub unserialize {
6884: my ($rep, $escapedkeys) = @_;
6885:
6886: return {} if $rep =~ /^error/;
6887:
6888: my %returnhash=();
6889: foreach my $item (split(/\&/,$rep)) {
6890: my ($key, $value) = split(/=/, $item, 2);
6891: $key = unescape($key) unless $escapedkeys;
6892: next if $key =~ /^error: 2 /;
6893: $returnhash{$key} = &thaw_unescape($value);
6894: }
6895: #return %returnhash;
6896: return \%returnhash;
6897: }
6898:
6899: # see Lond::dump_with_regexp
6900: # if $escapedkeys hash keys won't get unescaped.
6901: sub dump {
6902: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
6903: if (!$udomain) { $udomain=$env{'user.domain'}; }
6904: if (!$uname) { $uname=$env{'user.name'}; }
6905: my $uhome=&homeserver($uname,$udomain);
6906:
6907: if ($regexp) {
6908: $regexp=&escape($regexp);
6909: } else {
6910: $regexp='.';
6911: }
6912: if (grep { $_ eq $uhome } current_machine_ids()) {
6913: # user is hosted on this machine
6914: my $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
6915: $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
6916: return %{unserialize($reply, $escapedkeys)};
6917: }
6918: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
6919: my @pairs=split(/\&/,$rep);
6920: my %returnhash=();
6921: if (!($rep =~ /^error/ )) {
6922: foreach my $item (@pairs) {
6923: my ($key,$value)=split(/=/,$item,2);
6924: $key = unescape($key) unless $escapedkeys;
6925: #$key = &unescape($key);
6926: next if ($key =~ /^error: 2 /);
6927: $returnhash{$key}=&thaw_unescape($value);
6928: }
6929: }
6930: return %returnhash;
6931: }
6932:
6933:
6934: # --------------------------------------------------------- dumpstore interface
6935:
6936: sub dumpstore {
6937: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
6938: # same as dump but keys must be escaped. They may contain colon separated
6939: # lists of values that may themself contain colons (e.g. symbs).
6940: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
6941: }
6942:
6943: # -------------------------------------------------------------- keys interface
6944:
6945: sub getkeys {
6946: my ($namespace,$udomain,$uname)=@_;
6947: if (!$udomain) { $udomain=$env{'user.domain'}; }
6948: if (!$uname) { $uname=$env{'user.name'}; }
6949: my $uhome=&homeserver($uname,$udomain);
6950: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
6951: my @keyarray=();
6952: foreach my $key (split(/\&/,$rep)) {
6953: next if ($key =~ /^error: 2 /);
6954: push(@keyarray,&unescape($key));
6955: }
6956: return @keyarray;
6957: }
6958:
6959: # --------------------------------------------------------------- currentdump
6960: sub currentdump {
6961: my ($courseid,$sdom,$sname)=@_;
6962: $courseid = $env{'request.course.id'} if (! defined($courseid));
6963: $sdom = $env{'user.domain'} if (! defined($sdom));
6964: $sname = $env{'user.name'} if (! defined($sname));
6965: my $uhome = &homeserver($sname,$sdom);
6966: my $rep;
6967:
6968: if (grep { $_ eq $uhome } current_machine_ids()) {
6969: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
6970: $courseid)));
6971: } else {
6972: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
6973: }
6974:
6975: return if ($rep =~ /^(error:|no_such_host)/);
6976: #
6977: my %returnhash=();
6978: #
6979: if ($rep eq 'unknown_cmd') {
6980: # an old lond will not know currentdump
6981: # Do a dump and make it look like a currentdump
6982: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
6983: return if ($tmp[0] =~ /^(error:|no_such_host)/);
6984: my %hash = @tmp;
6985: @tmp=();
6986: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
6987: } else {
6988: my @pairs=split(/\&/,$rep);
6989: foreach my $pair (@pairs) {
6990: my ($key,$value)=split(/=/,$pair,2);
6991: my ($symb,$param) = split(/:/,$key);
6992: $returnhash{&unescape($symb)}->{&unescape($param)} =
6993: &thaw_unescape($value);
6994: }
6995: }
6996: return %returnhash;
6997: }
6998:
6999: sub convert_dump_to_currentdump{
7000: my %hash = %{shift()};
7001: my %returnhash;
7002: # Code ripped from lond, essentially. The only difference
7003: # here is the unescaping done by lonnet::dump(). Conceivably
7004: # we might run in to problems with parameter names =~ /^v\./
7005: while (my ($key,$value) = each(%hash)) {
7006: my ($v,$symb,$param) = split(/:/,$key);
7007: $symb = &unescape($symb);
7008: $param = &unescape($param);
7009: next if ($v eq 'version' || $symb eq 'keys');
7010: next if (exists($returnhash{$symb}) &&
7011: exists($returnhash{$symb}->{$param}) &&
7012: $returnhash{$symb}->{'v.'.$param} > $v);
7013: $returnhash{$symb}->{$param}=$value;
7014: $returnhash{$symb}->{'v.'.$param}=$v;
7015: }
7016: #
7017: # Remove all of the keys in the hashes which keep track of
7018: # the version of the parameter.
7019: while (my ($symb,$param_hash) = each(%returnhash)) {
7020: # use a foreach because we are going to delete from the hash.
7021: foreach my $key (keys(%$param_hash)) {
7022: delete($param_hash->{$key}) if ($key =~ /^v\./);
7023: }
7024: }
7025: return \%returnhash;
7026: }
7027:
7028: # ------------------------------------------------------ critical inc interface
7029:
7030: sub cinc {
7031: return &inc(@_,'critical');
7032: }
7033:
7034: # --------------------------------------------------------------- inc interface
7035:
7036: sub inc {
7037: my ($namespace,$store,$udomain,$uname,$critical) = @_;
7038: if (!$udomain) { $udomain=$env{'user.domain'}; }
7039: if (!$uname) { $uname=$env{'user.name'}; }
7040: my $uhome=&homeserver($uname,$udomain);
7041: my $items='';
7042: if (! ref($store)) {
7043: # got a single value, so use that instead
7044: $items = &escape($store).'=&';
7045: } elsif (ref($store) eq 'SCALAR') {
7046: $items = &escape($$store).'=&';
7047: } elsif (ref($store) eq 'ARRAY') {
7048: $items = join('=&',map {&escape($_);} @{$store});
7049: } elsif (ref($store) eq 'HASH') {
7050: while (my($key,$value) = each(%{$store})) {
7051: $items.= &escape($key).'='.&escape($value).'&';
7052: }
7053: }
7054: $items=~s/\&$//;
7055: if ($critical) {
7056: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
7057: } else {
7058: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
7059: }
7060: }
7061:
7062: # --------------------------------------------------------------- put interface
7063:
7064: sub put {
7065: my ($namespace,$storehash,$udomain,$uname)=@_;
7066: if (!$udomain) { $udomain=$env{'user.domain'}; }
7067: if (!$uname) { $uname=$env{'user.name'}; }
7068: my $uhome=&homeserver($uname,$udomain);
7069: my $items='';
7070: foreach my $item (keys(%$storehash)) {
7071: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
7072: }
7073: $items=~s/\&$//;
7074: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
7075: }
7076:
7077: # ------------------------------------------------------------ newput interface
7078:
7079: sub newput {
7080: my ($namespace,$storehash,$udomain,$uname)=@_;
7081: if (!$udomain) { $udomain=$env{'user.domain'}; }
7082: if (!$uname) { $uname=$env{'user.name'}; }
7083: my $uhome=&homeserver($uname,$udomain);
7084: my $items='';
7085: foreach my $key (keys(%$storehash)) {
7086: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
7087: }
7088: $items=~s/\&$//;
7089: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
7090: }
7091:
7092: # --------------------------------------------------------- putstore interface
7093:
7094: sub putstore {
7095: my ($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog)=@_;
7096: if (!$udomain) { $udomain=$env{'user.domain'}; }
7097: if (!$uname) { $uname=$env{'user.name'}; }
7098: my $uhome=&homeserver($uname,$udomain);
7099: my $items='';
7100: foreach my $key (keys(%$storehash)) {
7101: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
7102: }
7103: $items=~s/\&$//;
7104: my $esc_symb=&escape($symb);
7105: my $esc_v=&escape($version);
7106: my $reply =
7107: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
7108: $uhome);
7109: if (($tolog) && ($reply eq 'ok')) {
7110: my $namevalue='';
7111: foreach my $key (keys(%{$storehash})) {
7112: $namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&';
7113: }
7114: $namevalue .= 'ip='.&escape($ENV{'REMOTE_ADDR'}).
7115: '&host='.&escape($perlvar{'lonHostID'}).
7116: '&version='.$esc_v.
7117: '&by='.&escape($env{'user.name'}.':'.$env{'user.domain'});
7118: &Apache::lonnet::courselog($symb.':'.$uname.':'.$udomain.':PUTSTORE:'.$namevalue);
7119: }
7120: if ($reply eq 'unknown_cmd') {
7121: # gfall back to way things use to be done
7122: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
7123: $uname);
7124: }
7125: return $reply;
7126: }
7127:
7128: sub old_putstore {
7129: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
7130: if (!$udomain) { $udomain=$env{'user.domain'}; }
7131: if (!$uname) { $uname=$env{'user.name'}; }
7132: my $uhome=&homeserver($uname,$udomain);
7133: my %newstorehash;
7134: foreach my $item (keys(%$storehash)) {
7135: my $key = $version.':'.&escape($symb).':'.$item;
7136: $newstorehash{$key} = $storehash->{$item};
7137: }
7138: my $items='';
7139: my %allitems = ();
7140: foreach my $item (keys(%newstorehash)) {
7141: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
7142: my $key = $1.':keys:'.$2;
7143: $allitems{$key} .= $3.':';
7144: }
7145: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
7146: }
7147: foreach my $item (keys(%allitems)) {
7148: $allitems{$item} =~ s/\:$//;
7149: $items.= $item.'='.$allitems{$item}.'&';
7150: }
7151: $items=~s/\&$//;
7152: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
7153: }
7154:
7155: # ------------------------------------------------------ critical put interface
7156:
7157: sub cput {
7158: my ($namespace,$storehash,$udomain,$uname)=@_;
7159: if (!$udomain) { $udomain=$env{'user.domain'}; }
7160: if (!$uname) { $uname=$env{'user.name'}; }
7161: my $uhome=&homeserver($uname,$udomain);
7162: my $items='';
7163: foreach my $item (keys(%$storehash)) {
7164: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
7165: }
7166: $items=~s/\&$//;
7167: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
7168: }
7169:
7170: # -------------------------------------------------------------- eget interface
7171:
7172: sub eget {
7173: my ($namespace,$storearr,$udomain,$uname)=@_;
7174: my $items='';
7175: foreach my $item (@$storearr) {
7176: $items.=&escape($item).'&';
7177: }
7178: $items=~s/\&$//;
7179: if (!$udomain) { $udomain=$env{'user.domain'}; }
7180: if (!$uname) { $uname=$env{'user.name'}; }
7181: my $uhome=&homeserver($uname,$udomain);
7182: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
7183: my @pairs=split(/\&/,$rep);
7184: my %returnhash=();
7185: my $i=0;
7186: foreach my $item (@$storearr) {
7187: $returnhash{$item}=&thaw_unescape($pairs[$i]);
7188: $i++;
7189: }
7190: return %returnhash;
7191: }
7192:
7193: # ------------------------------------------------------------ tmpput interface
7194: sub tmpput {
7195: my ($storehash,$server,$context)=@_;
7196: my $items='';
7197: foreach my $item (keys(%$storehash)) {
7198: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
7199: }
7200: $items=~s/\&$//;
7201: if (defined($context)) {
7202: $items .= ':'.&escape($context);
7203: }
7204: return &reply("tmpput:$items",$server);
7205: }
7206:
7207: # ------------------------------------------------------------ tmpget interface
7208: sub tmpget {
7209: my ($token,$server)=@_;
7210: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
7211: my $rep=&reply("tmpget:$token",$server);
7212: my %returnhash;
7213: if ($rep =~ /^(con_lost|error|no_such_host)/i) {
7214: return %returnhash;
7215: }
7216: foreach my $item (split(/\&/,$rep)) {
7217: my ($key,$value)=split(/=/,$item);
7218: $returnhash{&unescape($key)}=&thaw_unescape($value);
7219: }
7220: return %returnhash;
7221: }
7222:
7223: # ------------------------------------------------------------ tmpdel interface
7224: sub tmpdel {
7225: my ($token,$server)=@_;
7226: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
7227: return &reply("tmpdel:$token",$server);
7228: }
7229:
7230: # ------------------------------------------------------------ get_timebased_id
7231:
7232: sub get_timebased_id {
7233: my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
7234: $maxtries) = @_;
7235: my ($newid,$error,$dellock);
7236: unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
7237: return ('','ok','invalid call to get suffix');
7238: }
7239:
7240: # set defaults for any optional args for which values were not supplied
7241: if ($who eq '') {
7242: $who = $env{'user.name'}.':'.$env{'user.domain'};
7243: }
7244: if (!$locktries) {
7245: $locktries = 3;
7246: }
7247: if (!$maxtries) {
7248: $maxtries = 10;
7249: }
7250:
7251: if (($cdom eq '') || ($cnum eq '')) {
7252: if ($env{'request.course.id'}) {
7253: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7254: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7255: }
7256: if (($cdom eq '') || ($cnum eq '')) {
7257: return ('','ok','call to get suffix not in course context');
7258: }
7259: }
7260:
7261: # construct locking item
7262: my $lockhash = {
7263: $prefix."\0".'locked_'.$keyid => $who,
7264: };
7265: my $tries = 0;
7266:
7267: # attempt to get lock on nohist_$namespace file
7268: my $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
7269: while (($gotlock ne 'ok') && $tries <$locktries) {
7270: $tries ++;
7271: sleep 1;
7272: $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
7273: }
7274:
7275: # attempt to get unique identifier, based on current timestamp
7276: if ($gotlock eq 'ok') {
7277: my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
7278: my $id = time;
7279: $newid = $id;
7280: if ($idtype eq 'addcode') {
7281: $newid .= &sixnum_code();
7282: }
7283: my $idtries = 0;
7284: while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
7285: if ($idtype eq 'concat') {
7286: $newid = $id.$idtries;
7287: } elsif ($idtype eq 'addcode') {
7288: $newid = $newid.&sixnum_code();
7289: } else {
7290: $newid ++;
7291: }
7292: $idtries ++;
7293: }
7294: if (!exists($inuse{$prefix."\0".$newid})) {
7295: my %new_item = (
7296: $prefix."\0".$newid => $who,
7297: );
7298: my $putresult = &Apache::lonnet::put('nohist_'.$namespace,\%new_item,
7299: $cdom,$cnum);
7300: if ($putresult ne 'ok') {
7301: undef($newid);
7302: $error = 'error saving new item: '.$putresult;
7303: }
7304: } else {
7305: undef($newid);
7306: $error = ('error: no unique suffix available for the new item ');
7307: }
7308: # remove lock
7309: my @del_lock = ($prefix."\0".'locked_'.$keyid);
7310: $dellock = &Apache::lonnet::del('nohist_'.$namespace,\@del_lock,$cdom,$cnum);
7311: } else {
7312: $error = "error: could not obtain lockfile\n";
7313: $dellock = 'ok';
7314: if (($prefix eq 'paste') && ($namespace eq 'courseeditor') && ($keyid eq 'num')) {
7315: $dellock = 'nolock';
7316: }
7317: }
7318: return ($newid,$dellock,$error);
7319: }
7320:
7321: sub sixnum_code {
7322: my $code;
7323: for (0..6) {
7324: $code .= int( rand(9) );
7325: }
7326: return $code;
7327: }
7328:
7329: # -------------------------------------------------- portfolio access checking
7330:
7331: sub portfolio_access {
7332: my ($requrl,$clientip) = @_;
7333: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
7334: my $result = &get_portfolio_access($udom,$unum,$file_name,$group,$clientip);
7335: if ($result) {
7336: my %setters;
7337: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
7338: my ($startblock,$endblock) =
7339: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
7340: if ($startblock && $endblock) {
7341: return 'B';
7342: }
7343: } else {
7344: my ($startblock,$endblock) =
7345: &Apache::loncommon::blockcheck(\%setters,'port');
7346: if ($startblock && $endblock) {
7347: return 'B';
7348: }
7349: }
7350: }
7351: if ($result eq 'ok') {
7352: return 'F';
7353: } elsif ($result =~ /^[^:]+:guest_/) {
7354: return 'A';
7355: }
7356: return '';
7357: }
7358:
7359: sub get_portfolio_access {
7360: my ($udom,$unum,$file_name,$group,$clientip,$access_hash) = @_;
7361:
7362: if (!ref($access_hash)) {
7363: my $current_perms = &get_portfile_permissions($udom,$unum);
7364: my %access_controls = &get_access_controls($current_perms,$group,
7365: $file_name);
7366: $access_hash = $access_controls{$file_name};
7367: }
7368:
7369: my ($public,$guest,@domains,@users,@courses,@groups,@ips);
7370: my $now = time;
7371: if (ref($access_hash) eq 'HASH') {
7372: foreach my $key (keys(%{$access_hash})) {
7373: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
7374: if ($start > $now) {
7375: next;
7376: }
7377: if ($end && $end<$now) {
7378: next;
7379: }
7380: if ($scope eq 'public') {
7381: $public = $key;
7382: last;
7383: } elsif ($scope eq 'guest') {
7384: $guest = $key;
7385: } elsif ($scope eq 'domains') {
7386: push(@domains,$key);
7387: } elsif ($scope eq 'users') {
7388: push(@users,$key);
7389: } elsif ($scope eq 'course') {
7390: push(@courses,$key);
7391: } elsif ($scope eq 'group') {
7392: push(@groups,$key);
7393: } elsif ($scope eq 'ip') {
7394: push(@ips,$key);
7395: }
7396: }
7397: if ($public) {
7398: return 'ok';
7399: } elsif (@ips > 0) {
7400: my $allowed;
7401: foreach my $ipkey (@ips) {
7402: if (ref($access_hash->{$ipkey}{'ip'}) eq 'ARRAY') {
7403: if (&Apache::loncommon::check_ip_acc(join(',',@{$access_hash->{$ipkey}{'ip'}}),$clientip)) {
7404: $allowed = 1;
7405: last;
7406: }
7407: }
7408: }
7409: if ($allowed) {
7410: return 'ok';
7411: }
7412: }
7413: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
7414: if ($guest) {
7415: return $guest;
7416: }
7417: } else {
7418: if (@domains > 0) {
7419: foreach my $domkey (@domains) {
7420: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
7421: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
7422: return 'ok';
7423: }
7424: }
7425: }
7426: }
7427: if (@users > 0) {
7428: foreach my $userkey (@users) {
7429: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
7430: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
7431: if (ref($item) eq 'HASH') {
7432: if (($item->{'uname'} eq $env{'user.name'}) &&
7433: ($item->{'udom'} eq $env{'user.domain'})) {
7434: return 'ok';
7435: }
7436: }
7437: }
7438: }
7439: }
7440: }
7441: my %roleshash;
7442: my @courses_and_groups = @courses;
7443: push(@courses_and_groups,@groups);
7444: if (@courses_and_groups > 0) {
7445: my (%allgroups,%allroles);
7446: my ($start,$end,$role,$sec,$group);
7447: foreach my $envkey (%env) {
7448: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
7449: my $cid = $2.'_'.$3;
7450: if ($1 eq 'gr') {
7451: $group = $4;
7452: $allgroups{$cid}{$group} = $env{$envkey};
7453: } else {
7454: if ($4 eq '') {
7455: $sec = 'none';
7456: } else {
7457: $sec = $4;
7458: }
7459: $allroles{$cid}{$1}{$sec} = $env{$envkey};
7460: }
7461: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
7462: my $cid = $2.'_'.$3;
7463: if ($4 eq '') {
7464: $sec = 'none';
7465: } else {
7466: $sec = $4;
7467: }
7468: $allroles{$cid}{$1}{$sec} = $env{$envkey};
7469: }
7470: }
7471: if (keys(%allroles) == 0) {
7472: return;
7473: }
7474: foreach my $key (@courses_and_groups) {
7475: my %content = %{$$access_hash{$key}};
7476: my $cnum = $content{'number'};
7477: my $cdom = $content{'domain'};
7478: my $cid = $cdom.'_'.$cnum;
7479: if (!exists($allroles{$cid})) {
7480: next;
7481: }
7482: foreach my $role_id (keys(%{$content{'roles'}})) {
7483: my @sections = @{$content{'roles'}{$role_id}{'section'}};
7484: my @groups = @{$content{'roles'}{$role_id}{'group'}};
7485: my @status = @{$content{'roles'}{$role_id}{'access'}};
7486: my @roles = @{$content{'roles'}{$role_id}{'role'}};
7487: foreach my $role (keys(%{$allroles{$cid}})) {
7488: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
7489: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
7490: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
7491: if (grep/^all$/,@sections) {
7492: return 'ok';
7493: } else {
7494: if (grep/^$sec$/,@sections) {
7495: return 'ok';
7496: }
7497: }
7498: }
7499: }
7500: if (keys(%{$allgroups{$cid}}) == 0) {
7501: if (grep/^none$/,@groups) {
7502: return 'ok';
7503: }
7504: } else {
7505: if (grep/^all$/,@groups) {
7506: return 'ok';
7507: }
7508: foreach my $group (keys(%{$allgroups{$cid}})) {
7509: if (grep/^$group$/,@groups) {
7510: return 'ok';
7511: }
7512: }
7513: }
7514: }
7515: }
7516: }
7517: }
7518: }
7519: if ($guest) {
7520: return $guest;
7521: }
7522: }
7523: }
7524: return;
7525: }
7526:
7527: sub course_group_datechecker {
7528: my ($dates,$now,$status) = @_;
7529: my ($start,$end) = split(/\./,$dates);
7530: if (!$start && !$end) {
7531: return 'ok';
7532: }
7533: if (grep/^active$/,@{$status}) {
7534: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
7535: return 'ok';
7536: }
7537: }
7538: if (grep/^previous$/,@{$status}) {
7539: if ($end > $now ) {
7540: return 'ok';
7541: }
7542: }
7543: if (grep/^future$/,@{$status}) {
7544: if ($start > $now) {
7545: return 'ok';
7546: }
7547: }
7548: return;
7549: }
7550:
7551: sub parse_portfolio_url {
7552: my ($url) = @_;
7553:
7554: my ($type,$udom,$unum,$group,$file_name);
7555:
7556: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
7557: $type = 1;
7558: $udom = $1;
7559: $unum = $2;
7560: $file_name = $3;
7561: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
7562: $type = 2;
7563: $udom = $1;
7564: $unum = $2;
7565: $group = $3;
7566: $file_name = $3.'/'.$4;
7567: }
7568: if (wantarray) {
7569: return ($type,$udom,$unum,$file_name,$group);
7570: }
7571: return $type;
7572: }
7573:
7574: sub is_portfolio_url {
7575: my ($url) = @_;
7576: return scalar(&parse_portfolio_url($url));
7577: }
7578:
7579: sub is_portfolio_file {
7580: my ($file) = @_;
7581: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
7582: return 1;
7583: }
7584: return;
7585: }
7586:
7587: sub usertools_access {
7588: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
7589: my ($access,%tools);
7590: if ($context eq '') {
7591: $context = 'tools';
7592: }
7593: if ($context eq 'requestcourses') {
7594: %tools = (
7595: official => 1,
7596: unofficial => 1,
7597: community => 1,
7598: textbook => 1,
7599: placement => 1,
7600: lti => 1,
7601: );
7602: } elsif ($context eq 'requestauthor') {
7603: %tools = (
7604: requestauthor => 1,
7605: );
7606: } else {
7607: %tools = (
7608: aboutme => 1,
7609: blog => 1,
7610: webdav => 1,
7611: portfolio => 1,
7612: );
7613: }
7614: return if (!defined($tools{$tool}));
7615:
7616: if (($udom eq '') || ($uname eq '')) {
7617: $udom = $env{'user.domain'};
7618: $uname = $env{'user.name'};
7619: }
7620:
7621: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7622: if ($action ne 'reload') {
7623: if ($context eq 'requestcourses') {
7624: return $env{'environment.canrequest.'.$tool};
7625: } elsif ($context eq 'requestauthor') {
7626: return $env{'environment.canrequest.author'};
7627: } else {
7628: return $env{'environment.availabletools.'.$tool};
7629: }
7630: }
7631: }
7632:
7633: my ($toolstatus,$inststatus,$envkey);
7634: if ($context eq 'requestauthor') {
7635: $envkey = $context;
7636: } else {
7637: $envkey = $context.'.'.$tool;
7638: }
7639:
7640: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
7641: ($action ne 'reload')) {
7642: $toolstatus = $env{'environment.'.$envkey};
7643: $inststatus = $env{'environment.inststatus'};
7644: } else {
7645: if (ref($userenvref) eq 'HASH') {
7646: $toolstatus = $userenvref->{$envkey};
7647: $inststatus = $userenvref->{'inststatus'};
7648: } else {
7649: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
7650: $toolstatus = $userenv{$envkey};
7651: $inststatus = $userenv{'inststatus'};
7652: }
7653: }
7654:
7655: if ($toolstatus ne '') {
7656: if ($toolstatus) {
7657: $access = 1;
7658: } else {
7659: $access = 0;
7660: }
7661: return $access;
7662: }
7663:
7664: my ($is_adv,%domdef);
7665: if (ref($is_advref) eq 'HASH') {
7666: $is_adv = $is_advref->{'is_adv'};
7667: } else {
7668: $is_adv = &is_advanced_user($udom,$uname);
7669: }
7670: if (ref($domdefref) eq 'HASH') {
7671: %domdef = %{$domdefref};
7672: } else {
7673: %domdef = &get_domain_defaults($udom);
7674: }
7675: if (ref($domdef{$tool}) eq 'HASH') {
7676: if ($is_adv) {
7677: if ($domdef{$tool}{'_LC_adv'} ne '') {
7678: if ($domdef{$tool}{'_LC_adv'}) {
7679: $access = 1;
7680: } else {
7681: $access = 0;
7682: }
7683: return $access;
7684: }
7685: }
7686: if ($inststatus ne '') {
7687: my ($hasaccess,$hasnoaccess);
7688: foreach my $affiliation (split(/:/,$inststatus)) {
7689: if ($domdef{$tool}{$affiliation} ne '') {
7690: if ($domdef{$tool}{$affiliation}) {
7691: $hasaccess = 1;
7692: } else {
7693: $hasnoaccess = 1;
7694: }
7695: }
7696: }
7697: if ($hasaccess || $hasnoaccess) {
7698: if ($hasaccess) {
7699: $access = 1;
7700: } elsif ($hasnoaccess) {
7701: $access = 0;
7702: }
7703: return $access;
7704: }
7705: } else {
7706: if ($domdef{$tool}{'default'} ne '') {
7707: if ($domdef{$tool}{'default'}) {
7708: $access = 1;
7709: } elsif ($domdef{$tool}{'default'} == 0) {
7710: $access = 0;
7711: }
7712: return $access;
7713: }
7714: }
7715: } else {
7716: if (($context eq 'tools') && ($tool ne 'webdav')) {
7717: $access = 1;
7718: } else {
7719: $access = 0;
7720: }
7721: return $access;
7722: }
7723: }
7724:
7725: sub is_course_owner {
7726: my ($cdom,$cnum,$udom,$uname) = @_;
7727: if (($udom eq '') || ($uname eq '')) {
7728: $udom = $env{'user.domain'};
7729: $uname = $env{'user.name'};
7730: }
7731: unless (($udom eq '') || ($uname eq '')) {
7732: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
7733: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
7734: return 1;
7735: } else {
7736: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
7737: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
7738: return 1;
7739: }
7740: }
7741: }
7742: }
7743: return;
7744: }
7745:
7746: sub is_advanced_user {
7747: my ($udom,$uname) = @_;
7748: if ($udom ne '' && $uname ne '') {
7749: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7750: if (wantarray) {
7751: return ($env{'user.adv'},$env{'user.author'});
7752: } else {
7753: return $env{'user.adv'};
7754: }
7755: }
7756: }
7757: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
7758: my %allroles;
7759: my ($is_adv,$is_author);
7760: foreach my $role (keys(%roleshash)) {
7761: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
7762: my $area = '/'.$tdomain.'/'.$trest;
7763: if ($sec ne '') {
7764: $area .= '/'.$sec;
7765: }
7766: if (($area ne '') && ($trole ne '')) {
7767: my $spec=$trole.'.'.$area;
7768: if ($trole =~ /^cr\//) {
7769: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
7770: } elsif ($trole ne 'gr') {
7771: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
7772: }
7773: if ($trole eq 'au') {
7774: $is_author = 1;
7775: }
7776: }
7777: }
7778: foreach my $role (keys(%allroles)) {
7779: last if ($is_adv);
7780: foreach my $item (split(/:/,$allroles{$role})) {
7781: if ($item ne '') {
7782: my ($privilege,$restrictions)=split(/&/,$item);
7783: if ($privilege eq 'adv') {
7784: $is_adv = 1;
7785: last;
7786: }
7787: }
7788: }
7789: }
7790: if (wantarray) {
7791: return ($is_adv,$is_author);
7792: }
7793: return $is_adv;
7794: }
7795:
7796: sub check_can_request {
7797: my ($dom,$can_request,$request_domains,$uname,$udom) = @_;
7798: my $canreq = 0;
7799: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
7800: $uname = $env{'user.name'};
7801: $udom = $env{'user.domain'};
7802: }
7803: my ($types,$typename) = &Apache::loncommon::course_types();
7804: my @options = ('approval','validate','autolimit');
7805: my $optregex = join('|',@options);
7806: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
7807: foreach my $type (@{$types}) {
7808: if (&usertools_access($uname,$udom,$type,undef,
7809: 'requestcourses')) {
7810: $canreq ++;
7811: if (ref($request_domains) eq 'HASH') {
7812: push(@{$request_domains->{$type}},$udom);
7813: }
7814: if ($dom eq $udom) {
7815: $can_request->{$type} = 1;
7816: }
7817: }
7818: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '') &&
7819: ($env{'environment.reqcrsotherdom.'.$type} ne '')) {
7820: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
7821: if (@curr > 0) {
7822: foreach my $item (@curr) {
7823: if (ref($request_domains) eq 'HASH') {
7824: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
7825: if ($otherdom ne '') {
7826: if (ref($request_domains->{$type}) eq 'ARRAY') {
7827: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
7828: push(@{$request_domains->{$type}},$otherdom);
7829: }
7830: } else {
7831: push(@{$request_domains->{$type}},$otherdom);
7832: }
7833: }
7834: }
7835: }
7836: unless ($dom eq $env{'user.domain'}) {
7837: $canreq ++;
7838: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
7839: $can_request->{$type} = 1;
7840: }
7841: }
7842: }
7843: }
7844: }
7845: }
7846: return $canreq;
7847: }
7848:
7849: # ---------------------------------------------- Custom access rule evaluation
7850:
7851: sub customaccess {
7852: my ($priv,$uri)=@_;
7853: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
7854: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
7855: $udom = &LONCAPA::clean_domain($udom);
7856: $ucrs = &LONCAPA::clean_username($ucrs);
7857: my $access=0;
7858: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
7859: my ($effect,$realm,$role,$type)=split(/\:/,$right);
7860: if ($type eq 'user') {
7861: foreach my $scope (split(/\s*\,\s*/,$realm)) {
7862: my ($tdom,$tuname)=split(m{/},$scope);
7863: if ($tdom) {
7864: if ($tdom ne $env{'user.domain'}) { next; }
7865: }
7866: if ($tuname) {
7867: if ($tuname ne $env{'user.name'}) { next; }
7868: }
7869: $access=($effect eq 'allow');
7870: last;
7871: }
7872: } else {
7873: if ($role) {
7874: if ($role ne $urole) { next; }
7875: }
7876: foreach my $scope (split(/\s*\,\s*/,$realm)) {
7877: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
7878: if ($tdom) {
7879: if ($tdom ne $udom) { next; }
7880: }
7881: if ($tcrs) {
7882: if ($tcrs ne $ucrs) { next; }
7883: }
7884: if ($tsec) {
7885: if ($tsec ne $usec) { next; }
7886: }
7887: $access=($effect eq 'allow');
7888: last;
7889: }
7890: if ($realm eq '' && $role eq '') {
7891: $access=($effect eq 'allow');
7892: }
7893: }
7894: }
7895: return $access;
7896: }
7897:
7898: # ------------------------------------------------- Check for a user privilege
7899:
7900: sub allowed {
7901: my ($priv,$uri,$symb,$role,$clientip,$noblockcheck)=@_;
7902: my $ver_orguri=$uri;
7903: $uri=&deversion($uri);
7904: my $orguri=$uri;
7905: $uri=&declutter($uri);
7906:
7907: if ($priv eq 'evb') {
7908: # Evade communication block restrictions for specified role in a course
7909: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
7910: return $1;
7911: } else {
7912: return;
7913: }
7914: }
7915:
7916: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
7917: # Free bre access to adm and meta resources
7918: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard|ext\.tool)$}))
7919: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
7920: && ($priv eq 'bre')) {
7921: return 'F';
7922: }
7923:
7924: # Free bre access to user's own portfolio contents
7925: my ($space,$domain,$name,@dir)=split('/',$uri);
7926: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
7927: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
7928: my %setters;
7929: my ($startblock,$endblock) =
7930: &Apache::loncommon::blockcheck(\%setters,'port');
7931: if ($startblock && $endblock) {
7932: return 'B';
7933: } else {
7934: return 'F';
7935: }
7936: }
7937:
7938: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
7939: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
7940: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
7941: if (exists($env{'request.course.id'})) {
7942: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7943: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7944: if (($domain eq $cdom) && ($name eq $cnum)) {
7945: my $courseprivid=$env{'request.course.id'};
7946: $courseprivid=~s/\_/\//;
7947: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
7948: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
7949: return $1;
7950: } else {
7951: if ($env{'request.course.sec'}) {
7952: $courseprivid.='/'.$env{'request.course.sec'};
7953: }
7954: if ($env{'user.priv.'.$env{'request.role'}.'./'.
7955: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
7956: return $2;
7957: }
7958: }
7959: }
7960: }
7961: }
7962:
7963: # Free bre to public access
7964:
7965: if ($priv eq 'bre') {
7966: my $copyright;
7967: unless ($uri =~ /ext\.tool/) {
7968: $copyright=&metadata($uri,'copyright');
7969: }
7970: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
7971: return 'F';
7972: }
7973: if ($copyright eq 'priv') {
7974: $uri=~/([^\/]+)\/([^\/]+)\//;
7975: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
7976: return '';
7977: }
7978: }
7979: if ($copyright eq 'domain') {
7980: $uri=~/([^\/]+)\/([^\/]+)\//;
7981: unless (($env{'user.domain'} eq $1) ||
7982: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
7983: return '';
7984: }
7985: }
7986: if ($env{'request.role'}=~ /li\.\//) {
7987: # Library role, so allow browsing of resources in this domain.
7988: return 'F';
7989: }
7990: if ($copyright eq 'custom') {
7991: unless (&customaccess($priv,$uri)) { return ''; }
7992: }
7993: }
7994: # Domain coordinator is trying to create a course
7995: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
7996: # uri is the requested domain in this case.
7997: # comparison to 'request.role.domain' shows if the user has selected
7998: # a role of dc for the domain in question.
7999: return 'F' if ($uri eq $env{'request.role.domain'});
8000: }
8001:
8002: my $thisallowed='';
8003: my $statecond=0;
8004: my $courseprivid='';
8005:
8006: my $ownaccess;
8007: # Community Coordinator or Assistant Co-author browsing resource space.
8008: if (($priv eq 'bro') && ($env{'user.author'})) {
8009: if ($uri eq '') {
8010: $ownaccess = 1;
8011: } else {
8012: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
8013: my $udom = $env{'user.domain'};
8014: my $uname = $env{'user.name'};
8015: if ($uri =~ m{^\Q$udom\E/?$}) {
8016: $ownaccess = 1;
8017: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
8018: unless ($uri =~ m{\.\./}) {
8019: $ownaccess = 1;
8020: }
8021: } elsif (($udom ne 'public') && ($uname ne 'public')) {
8022: my $now = time;
8023: if ($uri =~ m{^([^/]+)/?$}) {
8024: my $adom = $1;
8025: foreach my $key (keys(%env)) {
8026: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
8027: my ($start,$end) = split('.',$env{$key});
8028: if (($now >= $start) && (!$end || $end < $now)) {
8029: $ownaccess = 1;
8030: last;
8031: }
8032: }
8033: }
8034: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
8035: my $adom = $1;
8036: my $aname = $2;
8037: foreach my $role ('ca','aa') {
8038: if ($env{"user.role.$role./$adom/$aname"}) {
8039: my ($start,$end) =
8040: split('.',$env{"user.role.$role./$adom/$aname"});
8041: if (($now >= $start) && (!$end || $end < $now)) {
8042: $ownaccess = 1;
8043: last;
8044: }
8045: }
8046: }
8047: }
8048: }
8049: }
8050: }
8051: }
8052:
8053: # Course
8054:
8055: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
8056: unless (($priv eq 'bro') && (!$ownaccess)) {
8057: $thisallowed.=$1;
8058: }
8059: }
8060:
8061: # Domain
8062:
8063: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
8064: =~/\Q$priv\E\&([^\:]*)/) {
8065: unless (($priv eq 'bro') && (!$ownaccess)) {
8066: $thisallowed.=$1;
8067: }
8068: }
8069:
8070: # User who is not author or co-author might still be able to edit
8071: # resource of an author in the domain (e.g., if Domain Coordinator).
8072: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
8073: (&allowed('mdc',$env{'request.course.id'}))) {
8074: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
8075: $thisallowed.=$1;
8076: }
8077: }
8078:
8079: # Course: uri itself is a course
8080: my $courseuri=$uri;
8081: $courseuri=~s/\_(\d)/\/$1/;
8082: $courseuri=~s/^([^\/])/\/$1/;
8083:
8084: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
8085: =~/\Q$priv\E\&([^\:]*)/) {
8086: if ($priv eq 'mip') {
8087: my $rem = $1;
8088: if (($uri ne '') && ($env{'request.course.id'} eq $uri) &&
8089: ($env{'course.'.$env{'request.course.id'}.'.internal.courseowner'} eq $env{'user.name'}.':'.$env{'user.domain'})) {
8090: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8091: if ($cdom ne '') {
8092: my %passwdconf = &get_passwdconf($cdom);
8093: if (ref($passwdconf{'crsownerchg'}) eq 'HASH') {
8094: if (ref($passwdconf{'crsownerchg'}{'by'}) eq 'ARRAY') {
8095: if (@{$passwdconf{'crsownerchg'}{'by'}}) {
8096: my @inststatuses = split(':',$env{'environment.inststatus'});
8097: unless (@inststatuses) {
8098: @inststatuses = ('default');
8099: }
8100: foreach my $status (@inststatuses) {
8101: if (grep(/^\Q$status\E$/,@{$passwdconf{'crsownerchg'}{'by'}})) {
8102: $thisallowed.=$rem;
8103: }
8104: }
8105: }
8106: }
8107: }
8108: }
8109: }
8110: } else {
8111: unless (($priv eq 'bro') && (!$ownaccess)) {
8112: $thisallowed.=$1;
8113: }
8114: }
8115: }
8116:
8117: # URI is an uploaded document for this course, default permissions don't matter
8118: # not allowing 'edit' access (editupload) to uploaded course docs
8119: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
8120: $thisallowed='';
8121: my ($match)=&is_on_map($uri);
8122: if ($match) {
8123: if ($env{'user.priv.'.$env{'request.role'}.'./'}
8124: =~/\Q$priv\E\&([^\:]*)/) {
8125: my $value = $1;
8126: my $deeplinkblock = &deeplink_check($priv,$symb,$uri);
8127: if ($deeplinkblock) {
8128: $thisallowed='D';
8129: } elsif ($noblockcheck) {
8130: $thisallowed.=$value;
8131: } else {
8132: my @blockers = &has_comm_blocking($priv,$symb,$uri);
8133: if (@blockers > 0) {
8134: $thisallowed = 'B';
8135: } else {
8136: $thisallowed.=$value;
8137: }
8138: }
8139: }
8140: } else {
8141: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
8142: if ($refuri) {
8143: if ($refuri =~ m|^/adm/|) {
8144: $thisallowed='F';
8145: } else {
8146: $refuri=&declutter($refuri);
8147: my ($match) = &is_on_map($refuri);
8148: if ($match) {
8149: my $deeplinkblock = &deeplink_check($priv,$symb,$refuri);
8150: if ($deeplinkblock) {
8151: $thisallowed='D';
8152: } elsif ($noblockcheck) {
8153: $thisallowed='F';
8154: } else {
8155: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
8156: if (@blockers > 0) {
8157: $thisallowed = 'B';
8158: } else {
8159: $thisallowed='F';
8160: }
8161: }
8162: }
8163: }
8164: }
8165: }
8166: }
8167:
8168: if ($priv eq 'bre'
8169: && $thisallowed ne 'F'
8170: && $thisallowed ne '2'
8171: && &is_portfolio_url($uri)) {
8172: $thisallowed = &portfolio_access($uri,$clientip);
8173: }
8174:
8175: # Full access at system, domain or course-wide level? Exit.
8176: if ($thisallowed=~/F/) {
8177: return 'F';
8178: }
8179:
8180: # If this is generating or modifying users, exit with special codes
8181:
8182: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
8183: if (($priv eq 'cca') || ($priv eq 'caa')) {
8184: my ($audom,$auname)=split('/',$uri);
8185: # no author name given, so this just checks on the general right to make a co-author in this domain
8186: unless ($auname) { return $thisallowed; }
8187: # an author name is given, so we are about to actually make a co-author for a certain account
8188: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
8189: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
8190: ($audom ne $env{'request.role.domain'}))) { return ''; }
8191: }
8192: return $thisallowed;
8193: }
8194: #
8195: # Gathered so far: system, domain and course wide privileges
8196: #
8197: # Course: See if uri or referer is an individual resource that is part of
8198: # the course
8199:
8200: if ($env{'request.course.id'}) {
8201:
8202: # If this is modifying password (internal auth) domains must match for user and user's role.
8203:
8204: if ($priv eq 'mip') {
8205: if ($env{'user.domain'} eq $env{'request.role.domain'}) {
8206: return $thisallowed;
8207: } else {
8208: return '';
8209: }
8210: }
8211:
8212: $courseprivid=$env{'request.course.id'};
8213: if ($env{'request.course.sec'}) {
8214: $courseprivid.='/'.$env{'request.course.sec'};
8215: }
8216: $courseprivid=~s/\_/\//;
8217: my $checkreferer=1;
8218: my ($match,$cond)=&is_on_map($uri);
8219: if ($match) {
8220: $statecond=$cond;
8221: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
8222: =~/\Q$priv\E\&([^\:]*)/) {
8223: my $value = $1;
8224: if ($priv eq 'bre') {
8225: if ($noblockcheck) {
8226: $thisallowed.=$value;
8227: } else {
8228: my @blockers = &has_comm_blocking($priv,$symb,$uri);
8229: if (@blockers > 0) {
8230: $thisallowed = 'B';
8231: } else {
8232: $thisallowed.=$value;
8233: }
8234: }
8235: } else {
8236: $thisallowed.=$value;
8237: }
8238: $checkreferer=0;
8239: }
8240: }
8241:
8242: if ($checkreferer) {
8243: my $refuri=$env{'httpref.'.$orguri};
8244: unless ($refuri) {
8245: foreach my $key (keys(%env)) {
8246: if ($key=~/^httpref\..*\*/) {
8247: my $pattern=$key;
8248: $pattern=~s/^httpref\.\/res\///;
8249: $pattern=~s/\*/\[\^\/\]\+/g;
8250: $pattern=~s/\//\\\//g;
8251: if ($orguri=~/$pattern/) {
8252: $refuri=$env{$key};
8253: }
8254: }
8255: }
8256: }
8257:
8258: if ($refuri) {
8259: $refuri=&declutter($refuri);
8260: my ($match,$cond)=&is_on_map($refuri);
8261: if ($match) {
8262: my $refstatecond=$cond;
8263: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
8264: =~/\Q$priv\E\&([^\:]*)/) {
8265: my $value = $1;
8266: if ($priv eq 'bre') {
8267: my $deeplinkblock = &deeplink_check($priv,$symb,$refuri);
8268: if ($deeplinkblock) {
8269: $thisallowed = 'D';
8270: } elsif ($noblockcheck) {
8271: $thisallowed.=$value;
8272: } else {
8273: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
8274: if (@blockers > 0) {
8275: $thisallowed = 'B';
8276: } else {
8277: $thisallowed.=$value;
8278: }
8279: }
8280: } else {
8281: $thisallowed.=$value;
8282: }
8283: $uri=$refuri;
8284: $statecond=$refstatecond;
8285: }
8286: }
8287: }
8288: }
8289: }
8290:
8291: #
8292: # Gathered now: all privileges that could apply, and condition number
8293: #
8294: #
8295: # Full or no access?
8296: #
8297:
8298: if ($thisallowed=~/F/) {
8299: return 'F';
8300: }
8301:
8302: unless ($thisallowed) {
8303: return '';
8304: }
8305:
8306: # Restrictions exist, deal with them
8307: #
8308: # C:according to course preferences
8309: # R:according to resource settings
8310: # L:unless locked
8311: # X:according to user session state
8312: #
8313:
8314: # Possibly locked functionality, check all courses
8315: # Locks might take effect only after 10 minutes cache expiration for other
8316: # courses, and 2 minutes for current course
8317:
8318: my $envkey;
8319: if ($thisallowed=~/L/) {
8320: foreach $envkey (keys(%env)) {
8321: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
8322: my $courseid=$2;
8323: my $roleid=$1.'.'.$2;
8324: $courseid=~s/^\///;
8325: my $expiretime=600;
8326: if ($env{'request.role'} eq $roleid) {
8327: $expiretime=120;
8328: }
8329: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
8330: my $prefix='course.'.$cdom.'_'.$cnum.'.';
8331: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
8332: &coursedescription($courseid,{'freshen_cache' => 1});
8333: }
8334: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
8335: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
8336: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
8337: &log($env{'user.domain'},$env{'user.name'},
8338: $env{'user.home'},
8339: 'Locked by res: '.$priv.' for '.$uri.' due to '.
8340: $cdom.'/'.$cnum.'/'.$csec.' expire '.
8341: $env{$prefix.'priv.'.$priv.'.lock.expire'});
8342: return '';
8343: }
8344: }
8345: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
8346: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
8347: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
8348: &log($env{'user.domain'},$env{'user.name'},
8349: $env{'user.home'},
8350: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
8351: $cdom.'/'.$cnum.'/'.$csec.' expire '.
8352: $env{$prefix.'priv.'.$priv.'.lock.expire'});
8353: return '';
8354: }
8355: }
8356: }
8357: }
8358: }
8359:
8360: #
8361: # Rest of the restrictions depend on selected course
8362: #
8363:
8364: unless ($env{'request.course.id'}) {
8365: if ($thisallowed eq 'A') {
8366: return 'A';
8367: } elsif ($thisallowed eq 'B') {
8368: return 'B';
8369: } else {
8370: return '1';
8371: }
8372: }
8373:
8374: #
8375: # Now user is definitely in a course
8376: #
8377:
8378:
8379: # Course preferences
8380:
8381: if ($thisallowed=~/C/) {
8382: my $rolecode=(split(/\./,$env{'request.role'}))[0];
8383: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
8384: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
8385: =~/\Q$rolecode\E/) {
8386: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
8387: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
8388: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
8389: $env{'request.course.id'});
8390: }
8391: return '';
8392: }
8393:
8394: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
8395: =~/\Q$unamedom\E/) {
8396: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
8397: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
8398: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
8399: $env{'request.course.id'});
8400: }
8401: return '';
8402: }
8403: }
8404:
8405: # Resource preferences
8406:
8407: if ($thisallowed=~/R/) {
8408: my $rolecode=(split(/\./,$env{'request.role'}))[0];
8409: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
8410: if (($priv ne 'pch') && ($priv ne 'plc')) {
8411: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
8412: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
8413: }
8414: return '';
8415: }
8416: }
8417:
8418: # Restricted by state or randomout?
8419:
8420: if ($thisallowed=~/X/) {
8421: if ($env{'acc.randomout'}) {
8422: if (!$symb) { $symb=&symbread($uri,1); }
8423: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
8424: return '';
8425: }
8426: }
8427: if (&condval($statecond)) {
8428: return '2';
8429: } else {
8430: return '';
8431: }
8432: }
8433:
8434: if ($thisallowed eq 'A') {
8435: return 'A';
8436: } elsif ($thisallowed eq 'B') {
8437: return 'B';
8438: } elsif ($thisallowed eq 'D') {
8439: return 'D';
8440: }
8441: return 'F';
8442: }
8443:
8444: # ------------------------------------------- Check construction space access
8445:
8446: sub constructaccess {
8447: my ($url,$setpriv)=@_;
8448:
8449: # We do not allow editing of previous versions of files
8450: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
8451:
8452: # Get username and domain from URL
8453: my ($ownername,$ownerdomain,$ownerhome);
8454:
8455: ($ownerdomain,$ownername) =
8456: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)(?:/daxepage|/daxeopen)?/priv/($match_domain)/($match_username)(?:/|$)});
8457:
8458: # The URL does not really point to any authorspace, forget it
8459: unless (($ownername) && ($ownerdomain)) { return ''; }
8460:
8461: # Now we need to see if the user has access to the authorspace of
8462: # $ownername at $ownerdomain
8463:
8464: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
8465: # Real author for this?
8466: $ownerhome = $env{'user.home'};
8467: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
8468: return ($ownername,$ownerdomain,$ownerhome);
8469: }
8470: } else {
8471: # Co-author for this?
8472: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
8473: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
8474: $ownerhome = &homeserver($ownername,$ownerdomain);
8475: return ($ownername,$ownerdomain,$ownerhome);
8476: }
8477: if ($env{'request.course.id'}) {
8478: if (($ownername eq $env{'course.'.$env{'request.course.id'}.'.num'}) &&
8479: ($ownerdomain eq $env{'course.'.$env{'request.course.id'}.'.domain'})) {
8480: if (&allowed('mdc',$env{'request.course.id'})) {
8481: $ownerhome = $env{'course.'.$env{'request.course.id'}.'.home'};
8482: return ($ownername,$ownerdomain,$ownerhome);
8483: }
8484: }
8485: }
8486: }
8487:
8488: # We don't have any access right now. If we are not possibly going to do anything about this,
8489: # we might as well leave
8490: unless ($setpriv) { return ''; }
8491:
8492: # Backdoor access?
8493: my $allowed=&allowed('eco',$ownerdomain);
8494: # Nope
8495: unless ($allowed) { return ''; }
8496: # Looks like we may have access, but could be locked by the owner of the construction space
8497: if ($allowed eq 'U') {
8498: my %blocked=&get('environment',['domcoord.author'],
8499: $ownerdomain,$ownername);
8500: # Is blocked by owner
8501: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
8502: }
8503: if (($allowed eq 'F') || ($allowed eq 'U')) {
8504: # Grant temporary access
8505: my $then=$env{'user.login.time'};
8506: my $update=$env{'user.update.time'};
8507: if (!$update) { $update = $then; }
8508: my $refresh=$env{'user.refresh.time'};
8509: if (!$refresh) { $refresh = $update; }
8510: my $now = time;
8511: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
8512: $now,'ca','constructaccess');
8513: $ownerhome = &homeserver($ownername,$ownerdomain);
8514: return($ownername,$ownerdomain,$ownerhome);
8515: }
8516: # No business here
8517: return '';
8518: }
8519:
8520: # ----------------------------------------------------------- Content Blocking
8521:
8522: {
8523: # Caches for faster Course Contents display where content blocking
8524: # is in operation (i.e., interval param set) for timed quiz.
8525: #
8526: # User for whom data are being temporarily cached.
8527: my $cacheduser='';
8528: # Cached blockers for this user (a hash of blocking items).
8529: my %cachedblockers=();
8530: # When the data were last cached.
8531: my $cachedlast='';
8532:
8533: sub load_all_blockers {
8534: my ($uname,$udom,$blocks)=@_;
8535: if (($uname ne '') && ($udom ne '')) {
8536: if (($cacheduser eq $uname.':'.$udom) &&
8537: (abs($cachedlast-time)<5)) {
8538: return;
8539: }
8540: }
8541: $cachedlast=time;
8542: $cacheduser=$uname.':'.$udom;
8543: %cachedblockers = &get_commblock_resources($blocks);
8544: }
8545:
8546: sub get_comm_blocks {
8547: my ($cdom,$cnum) = @_;
8548: if ($cdom eq '' || $cnum eq '') {
8549: return unless ($env{'request.course.id'});
8550: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
8551: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8552: }
8553: my %commblocks;
8554: my $hashid=$cdom.'_'.$cnum;
8555: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
8556: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
8557: %commblocks = %{$blocksref};
8558: } else {
8559: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
8560: my $cachetime = 600;
8561: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
8562: }
8563: return %commblocks;
8564: }
8565:
8566: sub get_commblock_resources {
8567: my ($blocks) = @_;
8568: my %blockers = ();
8569: return %blockers unless ($env{'request.course.id'});
8570: return %blockers if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
8571: my %commblocks;
8572: if (ref($blocks) eq 'HASH') {
8573: %commblocks = %{$blocks};
8574: } else {
8575: %commblocks = &get_comm_blocks();
8576: }
8577: return %blockers unless (keys(%commblocks) > 0);
8578: my $navmap = Apache::lonnavmaps::navmap->new();
8579: return %blockers unless (ref($navmap));
8580: my $now = time;
8581: foreach my $block (keys(%commblocks)) {
8582: if ($block =~ /^(\d+)____(\d+)$/) {
8583: my ($start,$end) = ($1,$2);
8584: if ($start <= $now && $end >= $now) {
8585: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
8586: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
8587: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
8588: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
8589: $blockers{$block}{maps} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
8590: }
8591: }
8592: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
8593: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
8594: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
8595: }
8596: }
8597: }
8598: }
8599: }
8600: } elsif ($block =~ /^firstaccess____(.+)$/) {
8601: my $item = $1;
8602: my @to_test;
8603: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
8604: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
8605: my @interval;
8606: my $type = 'map';
8607: if ($item eq 'course') {
8608: $type = 'course';
8609: @interval=&EXT("resource.0.interval");
8610: } else {
8611: if ($item =~ /___\d+___/) {
8612: $type = 'resource';
8613: @interval=&EXT("resource.0.interval",$item);
8614: if (ref($navmap)) {
8615: my $res = $navmap->getBySymb($item);
8616: push(@to_test,$res);
8617: }
8618: } else {
8619: my $mapsymb = &symbread($item,1);
8620: if ($mapsymb) {
8621: if (ref($navmap)) {
8622: my $mapres = $navmap->getBySymb($mapsymb);
8623: @to_test = $mapres->retrieveResources($mapres,undef,0,0,0,1);
8624: foreach my $res (@to_test) {
8625: my $symb = $res->symb();
8626: next if ($symb eq $mapsymb);
8627: if ($symb ne '') {
8628: @interval=&EXT("resource.0.interval",$symb);
8629: if ($interval[1] eq 'map') {
8630: last;
8631: }
8632: }
8633: }
8634: }
8635: }
8636: }
8637: }
8638: if ($interval[0] =~ /^(\d+)/) {
8639: my $timelimit = $1;
8640: my $first_access;
8641: if ($type eq 'resource') {
8642: $first_access=&get_first_access($interval[1],$item);
8643: } elsif ($type eq 'map') {
8644: $first_access=&get_first_access($interval[1],undef,$item);
8645: } else {
8646: $first_access=&get_first_access($interval[1]);
8647: }
8648: if ($first_access) {
8649: my $timesup = $first_access+$timelimit;
8650: if ($timesup > $now) {
8651: my $activeblock;
8652: foreach my $res (@to_test) {
8653: if ($res->answerable()) {
8654: $activeblock = 1;
8655: last;
8656: }
8657: }
8658: if ($activeblock) {
8659: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
8660: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
8661: $blockers{$block}{'maps'} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
8662: }
8663: }
8664: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
8665: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
8666: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
8667: }
8668: }
8669: }
8670: }
8671: }
8672: }
8673: }
8674: }
8675: }
8676: }
8677: return %blockers;
8678: }
8679:
8680: sub has_comm_blocking {
8681: my ($priv,$symb,$uri,$blocks) = @_;
8682: my @blockers;
8683: return unless ($env{'request.course.id'});
8684: return unless ($priv eq 'bre');
8685: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
8686: return if ($env{'request.state'} eq 'construct');
8687: &load_all_blockers($env{'user.name'},$env{'user.domain'},$blocks);
8688: return unless (keys(%cachedblockers) > 0);
8689: my (%possibles,@symbs);
8690: if (!$symb) {
8691: $symb = &symbread($uri,1,1,1,\%possibles);
8692: }
8693: if ($symb) {
8694: @symbs = ($symb);
8695: } elsif (keys(%possibles)) {
8696: @symbs = keys(%possibles);
8697: }
8698: my $noblock;
8699: foreach my $symb (@symbs) {
8700: last if ($noblock);
8701: my ($map,$resid,$resurl)=&decode_symb($symb);
8702: foreach my $block (keys(%cachedblockers)) {
8703: if ($block =~ /^firstaccess____(.+)$/) {
8704: my $item = $1;
8705: if (($item eq $map) || ($item eq $symb)) {
8706: $noblock = 1;
8707: last;
8708: }
8709: }
8710: if (ref($cachedblockers{$block}) eq 'HASH') {
8711: if (ref($cachedblockers{$block}{'resources'}) eq 'HASH') {
8712: if ($cachedblockers{$block}{'resources'}{$symb}) {
8713: unless (grep(/^\Q$block\E$/,@blockers)) {
8714: push(@blockers,$block);
8715: }
8716: }
8717: }
8718: }
8719: if (ref($cachedblockers{$block}{'maps'}) eq 'HASH') {
8720: if ($cachedblockers{$block}{'maps'}{$map}) {
8721: unless (grep(/^\Q$block\E$/,@blockers)) {
8722: push(@blockers,$block);
8723: }
8724: }
8725: }
8726: }
8727: }
8728: return if ($noblock);
8729: return @blockers;
8730: }
8731: }
8732:
8733: sub deeplink_check {
8734: my ($priv,$symb,$uri) = @_;
8735: return unless ($env{'request.course.id'});
8736: return unless ($priv eq 'bre');
8737: return if ($env{'request.state'} eq 'construct');
8738: return if ($env{'request.role.adv'});
8739: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8740: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
8741: my (%possibles,@symbs);
8742: if (!$symb) {
8743: $symb = &symbread($uri,1,1,1,\%possibles);
8744: }
8745: if ($symb) {
8746: @symbs = ($symb);
8747: } elsif (keys(%possibles)) {
8748: @symbs = keys(%possibles);
8749: }
8750:
8751: my ($login,$switchrole,$allow);
8752: if ($env{'request.deeplink.login'} =~ m{^\Q/tiny/$cdom/\E(\w+)$}) {
8753: my $key = $1;
8754: my $tinyurl;
8755: my ($result,$cached)=&Apache::lonnet::is_cached_new('tiny',$cdom."\0".$key);
8756: if (defined($cached)) {
8757: $tinyurl = $result;
8758: } else {
8759: my $configuname = &Apache::lonnet::get_domainconfiguser($cdom);
8760: my %currtiny = &Apache::lonnet::get('tiny',[$key],$cdom,$configuname);
8761: if ($currtiny{$key} ne '') {
8762: $tinyurl = $currtiny{$key};
8763: &Apache::lonnet::do_cache_new('tiny',$cdom."\0".$key,$currtiny{$key},600);
8764: }
8765: }
8766: if ($tinyurl ne '') {
8767: my ($cnumreq,$posslogin) = split(/\&/,$tinyurl);
8768: if ($cnumreq eq $cnum) {
8769: $login = $posslogin;
8770: } else {
8771: $switchrole = 1;
8772: }
8773: }
8774: }
8775: foreach my $symb (@symbs) {
8776: last if ($allow);
8777: my $deeplink = &EXT("resource.0.deeplink",$symb);
8778: if ($deeplink eq '') {
8779: $allow = 1;
8780: } else {
8781: my ($listed,$scope,$access) = split(/,/,$deeplink);
8782: if ($access eq 'any') {
8783: $allow = 1;
8784: } elsif ($login) {
8785: if ($access eq 'only') {
8786: if ($scope eq 'res') {
8787: if ($symb eq $login) {
8788: $allow = 1;
8789: }
8790: } elsif ($scope eq 'map') {
8791: #FIXME Compare map for $env{'request.deeplink.login'} with map for $symb
8792: } elsif ($scope eq 'rec') {
8793: #FIXME Recurse up for $env{'request.deeplink.login'} with map for $symb
8794: }
8795: } else {
8796: my ($acctype,$item) = split(/:/,$access);
8797: if (($acctype eq 'lti') && ($env{'user.linkprotector'})) {
8798: if (grep(/^\Q$item\E$/,split(/,/,$env{'user.linkprotector'}))) {
8799: my %tinyurls = &get('tiny',[$symb],$cdom,$cnum);
8800: if (grep(/\Q$tinyurls{$symb}\E$/,split(/,/,$env{'user.linkproturis'}))) {
8801: $allow = 1;
8802: }
8803: }
8804: } elsif (($acctype eq 'key') && ($env{'user.deeplinkkey'})) {
8805: if (grep(/^\Q$item\E$/,split(/,/,$env{'user.deeplinkkey'}))) {
8806: my %tinyurls = &get('tiny',[$symb],$cdom,$cnum);
8807: if (grep(/\Q$tinyurls{$symb}\E$/,split(/,/,$env{'user.keyedlinkuri'}))) {
8808: $allow = 1;
8809: }
8810: }
8811: }
8812: }
8813: }
8814: }
8815: }
8816: return if ($allow);
8817: return 1;
8818: }
8819:
8820: # -------------------------------- Deversion and split uri into path an filename
8821:
8822: #
8823: # Removes the version from a URI and
8824: # splits it in to its filename and path to the filename.
8825: # Seems like File::Basename could have done this more clearly.
8826: # Parameters:
8827: # $uri - input URI
8828: # Returns:
8829: # Two element list consisting of
8830: # $pathname - the URI up to and excluding the trailing /
8831: # $filename - The part of the URI following the last /
8832: # NOTE:
8833: # Another realization of this is simply:
8834: # use File::Basename;
8835: # ...
8836: # $uri = shift;
8837: # $filename = basename($uri);
8838: # $path = dirname($uri);
8839: # return ($filename, $path);
8840: #
8841: # The implementation below is probably faster however.
8842: #
8843: sub split_uri_for_cond {
8844: my $uri=&deversion(&declutter(shift));
8845: my @uriparts=split(/\//,$uri);
8846: my $filename=pop(@uriparts);
8847: my $pathname=join('/',@uriparts);
8848: return ($pathname,$filename);
8849: }
8850: # --------------------------------------------------- Is a resource on the map?
8851:
8852: sub is_on_map {
8853: my ($pathname,$filename) = &split_uri_for_cond(shift);
8854: #Trying to find the conditional for the file
8855: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
8856: /\&\Q$filename\E\:([\d\|]+)\&/);
8857: if ($match) {
8858: return (1,$1);
8859: } else {
8860: return (0,0);
8861: }
8862: }
8863:
8864: # --------------------------------------------------------- Get symb from alias
8865:
8866: sub get_symb_from_alias {
8867: my $symb=shift;
8868: my ($map,$resid,$url)=&decode_symb($symb);
8869: # Already is a symb
8870: if ($url) { return $symb; }
8871: # Must be an alias
8872: my $aliassymb='';
8873: my %bighash;
8874: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8875: &GDBM_READER(),0640)) {
8876: my $rid=$bighash{'mapalias_'.$symb};
8877: if ($rid) {
8878: my ($mapid,$resid)=split(/\./,$rid);
8879: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
8880: $resid,$bighash{'src_'.$rid});
8881: }
8882: untie %bighash;
8883: }
8884: return $aliassymb;
8885: }
8886:
8887: # ----------------------------------------------------------------- Define Role
8888:
8889: sub definerole {
8890: if (allowed('mcr','/')) {
8891: my ($rolename,$sysrole,$domrole,$courole,$uname,$udom)=@_;
8892: foreach my $role (split(':',$sysrole)) {
8893: my ($crole,$cqual)=split(/\&/,$role);
8894: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
8895: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
8896: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
8897: return "refused:s:$crole&$cqual";
8898: }
8899: }
8900: }
8901: foreach my $role (split(':',$domrole)) {
8902: my ($crole,$cqual)=split(/\&/,$role);
8903: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
8904: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
8905: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
8906: return "refused:d:$crole&$cqual";
8907: }
8908: }
8909: }
8910: foreach my $role (split(':',$courole)) {
8911: my ($crole,$cqual)=split(/\&/,$role);
8912: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
8913: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
8914: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
8915: return "refused:c:$crole&$cqual";
8916: }
8917: }
8918: }
8919: my $uhome;
8920: if (($uname ne '') && ($udom ne '')) {
8921: $uhome = &homeserver($uname,$udom);
8922: return $uhome if ($uhome eq 'no_host');
8923: } else {
8924: $uname = $env{'user.name'};
8925: $udom = $env{'user.domain'};
8926: $uhome = $env{'user.home'};
8927: }
8928: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
8929: "$udom:$uname:rolesdef_$rolename=".
8930: escape($sysrole.'_'.$domrole.'_'.$courole);
8931: return reply($command,$uhome);
8932: } else {
8933: return 'refused';
8934: }
8935: }
8936:
8937: # ---------------- Make a metadata query against the network of library servers
8938:
8939: sub metadata_query {
8940: my ($query,$custom,$customshow,$server_array,$domains_hash)=@_;
8941: my %rhash;
8942: my %libserv = &all_library();
8943: my @server_list = (defined($server_array) ? @$server_array
8944: : keys(%libserv) );
8945: for my $server (@server_list) {
8946: my $domains = '';
8947: if (ref($domains_hash) eq 'HASH') {
8948: $domains = $domains_hash->{$server};
8949: }
8950: unless ($custom or $customshow) {
8951: my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server);
8952: $rhash{$server}=$reply;
8953: }
8954: else {
8955: my $reply=&reply("querysend:".&escape($query).':'.
8956: &escape($custom).':'.&escape($customshow).':'.&escape($domains),
8957: $server);
8958: $rhash{$server}=$reply;
8959: }
8960: }
8961: return \%rhash;
8962: }
8963:
8964: # ----------------------------------------- Send log queries and wait for reply
8965:
8966: sub log_query {
8967: my ($uname,$udom,$query,%filters)=@_;
8968: my $uhome=&homeserver($uname,$udom);
8969: if ($uhome eq 'no_host') { return 'error: no_host'; }
8970: my $uhost=&hostname($uhome);
8971: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
8972: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
8973: $uhome);
8974: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
8975: return get_query_reply($queryid);
8976: }
8977:
8978: # -------------------------- Update MySQL table for portfolio file
8979:
8980: sub update_portfolio_table {
8981: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
8982: if ($group ne '') {
8983: $file_name =~s /^\Q$group\E//;
8984: }
8985: my $homeserver = &homeserver($uname,$udom);
8986: my $queryid=
8987: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
8988: ':'.&escape($file_name).':'.$action,$homeserver);
8989: my $reply = &get_query_reply($queryid);
8990: return $reply;
8991: }
8992:
8993: # -------------------------- Update MySQL allusers table
8994:
8995: sub update_allusers_table {
8996: my ($uname,$udom,$names) = @_;
8997: my $homeserver = &homeserver($uname,$udom);
8998: my $queryid=
8999: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
9000: 'lastname='.&escape($names->{'lastname'}).'%%'.
9001: 'firstname='.&escape($names->{'firstname'}).'%%'.
9002: 'middlename='.&escape($names->{'middlename'}).'%%'.
9003: 'generation='.&escape($names->{'generation'}).'%%'.
9004: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
9005: 'id='.&escape($names->{'id'}),$homeserver);
9006: return;
9007: }
9008:
9009: # ------- Request retrieval of institutional classlists for course(s)
9010:
9011: sub fetch_enrollment_query {
9012: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
9013: my ($homeserver,$sleep,$loopmax);
9014: my $maxtries = 1;
9015: if ($context eq 'automated') {
9016: $homeserver = $perlvar{'lonHostID'};
9017: $sleep = 2;
9018: $loopmax = 100;
9019: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
9020: } else {
9021: $homeserver = &homeserver($cnum,$dom);
9022: }
9023: my $host=&hostname($homeserver);
9024: my $cmd = '';
9025: foreach my $affiliate (keys(%{$affiliatesref})) {
9026: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
9027: }
9028: $cmd =~ s/%%$//;
9029: $cmd = &escape($cmd);
9030: my $query = 'fetchenrollment';
9031: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
9032: unless ($queryid=~/^\Q$host\E\_/) {
9033: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
9034: return 'error: '.$queryid;
9035: }
9036: my $reply = &get_query_reply($queryid,$sleep,$loopmax);
9037: my $tries = 1;
9038: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
9039: $reply = &get_query_reply($queryid,$sleep,$loopmax);
9040: $tries ++;
9041: }
9042: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
9043: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
9044: } else {
9045: my @responses = split(/:/,$reply);
9046: if (grep { $_ eq $homeserver } ¤t_machine_ids()) {
9047: foreach my $line (@responses) {
9048: my ($key,$value) = split(/=/,$line,2);
9049: $$replyref{$key} = $value;
9050: }
9051: } else {
9052: my $pathname = LONCAPA::tempdir();
9053: foreach my $line (@responses) {
9054: my ($key,$value) = split(/=/,$line);
9055: $$replyref{$key} = $value;
9056: if ($value > 0) {
9057: foreach my $item (@{$$affiliatesref{$key}}) {
9058: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
9059: my $destname = $pathname.'/'.$filename;
9060: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
9061: if ($xml_classlist =~ /^error/) {
9062: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
9063: } else {
9064: if ( open(FILE,">",$destname) ) {
9065: print FILE &unescape($xml_classlist);
9066: close(FILE);
9067: } else {
9068: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
9069: }
9070: }
9071: }
9072: }
9073: }
9074: }
9075: return 'ok';
9076: }
9077: return 'error';
9078: }
9079:
9080: sub get_query_reply {
9081: my ($queryid,$sleep,$loopmax) = @_;;
9082: if (($sleep eq '') || ($sleep !~ /^\d+\.?\d*$/)) {
9083: $sleep = 0.2;
9084: }
9085: if (($loopmax eq '') || ($loopmax =~ /\D/)) {
9086: $loopmax = 100;
9087: }
9088: my $replyfile=LONCAPA::tempdir().$queryid;
9089: my $reply='';
9090: for (1..$loopmax) {
9091: sleep($sleep);
9092: if (-e $replyfile.'.end') {
9093: if (open(my $fh,"<",$replyfile)) {
9094: $reply = join('',<$fh>);
9095: close($fh);
9096: } else { return 'error: reply_file_error'; }
9097: return &unescape($reply);
9098: }
9099: }
9100: return 'timeout:'.$queryid;
9101: }
9102:
9103: sub courselog_query {
9104: #
9105: # possible filters:
9106: # url: url or symb
9107: # username
9108: # domain
9109: # action: view, submit, grade
9110: # start: timestamp
9111: # end: timestamp
9112: #
9113: my (%filters)=@_;
9114: unless ($env{'request.course.id'}) { return 'no_course'; }
9115: if ($filters{'url'}) {
9116: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
9117: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
9118: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
9119: }
9120: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
9121: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
9122: return &log_query($cname,$cdom,'courselog',%filters);
9123: }
9124:
9125: sub userlog_query {
9126: #
9127: # possible filters:
9128: # action: log check role
9129: # start: timestamp
9130: # end: timestamp
9131: #
9132: my ($uname,$udom,%filters)=@_;
9133: return &log_query($uname,$udom,'userlog',%filters);
9134: }
9135:
9136: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
9137:
9138: sub auto_run {
9139: my ($cnum,$cdom) = @_;
9140: my $response = 0;
9141: my $settings;
9142: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
9143: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
9144: $settings = $domconfig{'autoenroll'};
9145: if ($settings->{'run'} eq '1') {
9146: $response = 1;
9147: }
9148: } else {
9149: my $homeserver;
9150: if (&is_course($cdom,$cnum)) {
9151: $homeserver = &homeserver($cnum,$cdom);
9152: } else {
9153: $homeserver = &domain($cdom,'primary');
9154: }
9155: if ($homeserver ne 'no_host') {
9156: $response = &reply('autorun:'.$cdom,$homeserver);
9157: }
9158: }
9159: return $response;
9160: }
9161:
9162: sub auto_get_sections {
9163: my ($cnum,$cdom,$inst_coursecode) = @_;
9164: my $homeserver;
9165: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9166: $homeserver = &homeserver($cnum,$cdom);
9167: }
9168: if (!defined($homeserver)) {
9169: if ($cdom =~ /^$match_domain$/) {
9170: $homeserver = &domain($cdom,'primary');
9171: }
9172: }
9173: my @secs;
9174: if (defined($homeserver)) {
9175: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
9176: unless ($response eq 'refused') {
9177: @secs = split(/:/,$response);
9178: }
9179: }
9180: return @secs;
9181: }
9182:
9183: sub auto_new_course {
9184: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
9185: my $homeserver = &homeserver($cnum,$cdom);
9186: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
9187: return $response;
9188: }
9189:
9190: sub auto_validate_courseID {
9191: my ($cnum,$cdom,$inst_course_id) = @_;
9192: my $homeserver = &homeserver($cnum,$cdom);
9193: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
9194: return $response;
9195: }
9196:
9197: sub auto_validate_instcode {
9198: my ($cnum,$cdom,$instcode,$owner) = @_;
9199: my ($homeserver,$response);
9200: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9201: $homeserver = &homeserver($cnum,$cdom);
9202: }
9203: if (!defined($homeserver)) {
9204: if ($cdom =~ /^$match_domain$/) {
9205: $homeserver = &domain($cdom,'primary');
9206: }
9207: }
9208: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
9209: &escape($instcode).':'.&escape($owner),$homeserver));
9210: my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
9211: return ($outcome,$description,$defaultcredits);
9212: }
9213:
9214: sub auto_create_password {
9215: my ($cnum,$cdom,$authparam,$udom) = @_;
9216: my ($homeserver,$response);
9217: my $create_passwd = 0;
9218: my $authchk = '';
9219: if ($udom =~ /^$match_domain$/) {
9220: $homeserver = &domain($udom,'primary');
9221: }
9222: if ($homeserver eq '') {
9223: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9224: $homeserver = &homeserver($cnum,$cdom);
9225: }
9226: }
9227: if ($homeserver eq '') {
9228: $authchk = 'nodomain';
9229: } else {
9230: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
9231: if ($response eq 'refused') {
9232: $authchk = 'refused';
9233: } else {
9234: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
9235: }
9236: }
9237: return ($authparam,$create_passwd,$authchk);
9238: }
9239:
9240: sub auto_photo_permission {
9241: my ($cnum,$cdom,$students) = @_;
9242: my $homeserver = &homeserver($cnum,$cdom);
9243: my ($outcome,$perm_reqd,$conditions) =
9244: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
9245: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
9246: return (undef,undef);
9247: }
9248: return ($outcome,$perm_reqd,$conditions);
9249: }
9250:
9251: sub auto_checkphotos {
9252: my ($uname,$udom,$pid) = @_;
9253: my $homeserver = &homeserver($uname,$udom);
9254: my ($result,$resulttype);
9255: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
9256: &escape($uname).':'.&escape($pid),
9257: $homeserver));
9258: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
9259: return (undef,undef);
9260: }
9261: if ($outcome) {
9262: ($result,$resulttype) = split(/:/,$outcome);
9263: }
9264: return ($result,$resulttype);
9265: }
9266:
9267: sub auto_photochoice {
9268: my ($cnum,$cdom) = @_;
9269: my $homeserver = &homeserver($cnum,$cdom);
9270: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
9271: &escape($cdom),
9272: $homeserver)));
9273: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
9274: return (undef,undef);
9275: }
9276: return ($update,$comment);
9277: }
9278:
9279: sub auto_photoupdate {
9280: my ($affiliatesref,$dom,$cnum,$photo) = @_;
9281: my $homeserver = &homeserver($cnum,$dom);
9282: my $host=&hostname($homeserver);
9283: my $cmd = '';
9284: my $maxtries = 1;
9285: foreach my $affiliate (keys(%{$affiliatesref})) {
9286: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
9287: }
9288: $cmd =~ s/%%$//;
9289: $cmd = &escape($cmd);
9290: my $query = 'institutionalphotos';
9291: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
9292: unless ($queryid=~/^\Q$host\E\_/) {
9293: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
9294: return 'error: '.$queryid;
9295: }
9296: my $reply = &get_query_reply($queryid);
9297: my $tries = 1;
9298: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
9299: $reply = &get_query_reply($queryid);
9300: $tries ++;
9301: }
9302: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
9303: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
9304: } else {
9305: my @responses = split(/:/,$reply);
9306: my $outcome = shift(@responses);
9307: foreach my $item (@responses) {
9308: my ($key,$value) = split(/=/,$item);
9309: $$photo{$key} = $value;
9310: }
9311: return $outcome;
9312: }
9313: return 'error';
9314: }
9315:
9316: sub auto_instcode_format {
9317: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
9318: $cat_order) = @_;
9319: my $courses = '';
9320: my @homeservers;
9321: if ($caller eq 'global') {
9322: my %servers = &get_servers($codedom,'library');
9323: foreach my $tryserver (keys(%servers)) {
9324: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
9325: push(@homeservers,$tryserver);
9326: }
9327: }
9328: } elsif ($caller eq 'requests') {
9329: if ($codedom =~ /^$match_domain$/) {
9330: my $chome = &domain($codedom,'primary');
9331: unless ($chome eq 'no_host') {
9332: push(@homeservers,$chome);
9333: }
9334: }
9335: } else {
9336: push(@homeservers,&homeserver($caller,$codedom));
9337: }
9338: foreach my $code (keys(%{$instcodes})) {
9339: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
9340: }
9341: chop($courses);
9342: my $ok_response = 0;
9343: my $response;
9344: while (@homeservers > 0 && $ok_response == 0) {
9345: my $server = shift(@homeservers);
9346: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
9347: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
9348: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
9349: split(/:/,$response);
9350: %{$codes} = (%{$codes},&str2hash($codes_str));
9351: push(@{$codetitles},&str2array($codetitles_str));
9352: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
9353: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
9354: $ok_response = 1;
9355: }
9356: }
9357: if ($ok_response) {
9358: return 'ok';
9359: } else {
9360: return $response;
9361: }
9362: }
9363:
9364: sub auto_instcode_defaults {
9365: my ($domain,$returnhash,$code_order) = @_;
9366: my @homeservers;
9367:
9368: my %servers = &get_servers($domain,'library');
9369: foreach my $tryserver (keys(%servers)) {
9370: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
9371: push(@homeservers,$tryserver);
9372: }
9373: }
9374:
9375: my $response;
9376: foreach my $server (@homeservers) {
9377: $response=&reply('autoinstcodedefaults:'.$domain,$server);
9378: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
9379:
9380: foreach my $pair (split(/\&/,$response)) {
9381: my ($name,$value)=split(/\=/,$pair);
9382: if ($name eq 'code_order') {
9383: @{$code_order} = split(/\&/,&unescape($value));
9384: } else {
9385: $returnhash->{&unescape($name)}=&unescape($value);
9386: }
9387: }
9388: return 'ok';
9389: }
9390:
9391: return $response;
9392: }
9393:
9394: sub auto_possible_instcodes {
9395: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
9396: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
9397: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
9398: return;
9399: }
9400: my (@homeservers,$uhome);
9401: if (defined(&domain($domain,'primary'))) {
9402: $uhome=&domain($domain,'primary');
9403: push(@homeservers,&domain($domain,'primary'));
9404: } else {
9405: my %servers = &get_servers($domain,'library');
9406: foreach my $tryserver (keys(%servers)) {
9407: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
9408: push(@homeservers,$tryserver);
9409: }
9410: }
9411: }
9412: my $response;
9413: foreach my $server (@homeservers) {
9414: $response=&reply('autopossibleinstcodes:'.$domain,$server);
9415: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
9416: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
9417: split(':',$response);
9418: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
9419: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
9420: foreach my $item (split('&',$cat_title)) {
9421: my ($name,$value)=split('=',$item);
9422: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
9423: }
9424: foreach my $item (split('&',$cat_order)) {
9425: my ($name,$value)=split('=',$item);
9426: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
9427: }
9428: return 'ok';
9429: }
9430: return $response;
9431: }
9432:
9433: sub auto_courserequest_checks {
9434: my ($dom) = @_;
9435: my ($homeserver,%validations);
9436: if ($dom =~ /^$match_domain$/) {
9437: $homeserver = &domain($dom,'primary');
9438: }
9439: unless ($homeserver eq 'no_host') {
9440: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
9441: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9442: my @items = split(/&/,$response);
9443: foreach my $item (@items) {
9444: my ($key,$value) = split('=',$item);
9445: $validations{&unescape($key)} = &thaw_unescape($value);
9446: }
9447: }
9448: }
9449: return %validations;
9450: }
9451:
9452: sub auto_courserequest_validation {
9453: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$custominfo) = @_;
9454: my ($homeserver,$response);
9455: if ($dom =~ /^$match_domain$/) {
9456: $homeserver = &domain($dom,'primary');
9457: }
9458: unless ($homeserver eq 'no_host') {
9459: my $customdata;
9460: if (ref($custominfo) eq 'HASH') {
9461: $customdata = &freeze_escape($custominfo);
9462: }
9463: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
9464: ':'.&escape($crstype).':'.&escape($inststatuslist).
9465: ':'.&escape($instcode).':'.&escape($instseclist).':'.
9466: $customdata,$homeserver));
9467: }
9468: return $response;
9469: }
9470:
9471: sub auto_validate_class_sec {
9472: my ($cdom,$cnum,$owners,$inst_class) = @_;
9473: my $homeserver = &homeserver($cnum,$cdom);
9474: my $ownerlist;
9475: if (ref($owners) eq 'ARRAY') {
9476: $ownerlist = join(',',@{$owners});
9477: } else {
9478: $ownerlist = $owners;
9479: }
9480: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
9481: &escape($ownerlist).':'.$cdom,$homeserver);
9482: return $response;
9483: }
9484:
9485: sub auto_validate_instclasses {
9486: my ($cdom,$cnum,$owners,$classesref) = @_;
9487: my ($homeserver,%validations);
9488: $homeserver = &homeserver($cnum,$cdom);
9489: unless ($homeserver eq 'no_host') {
9490: my $ownerlist;
9491: if (ref($owners) eq 'ARRAY') {
9492: $ownerlist = join(',',@{$owners});
9493: } else {
9494: $ownerlist = $owners;
9495: }
9496: if (ref($classesref) eq 'HASH') {
9497: my $classes = &freeze_escape($classesref);
9498: my $response=&reply('autovalidateinstclasses:'.&escape($ownerlist).
9499: ':'.$cdom.':'.$classes,$homeserver);
9500: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9501: my @items = split(/&/,$response);
9502: foreach my $item (@items) {
9503: my ($key,$value) = split('=',$item);
9504: $validations{&unescape($key)} = &thaw_unescape($value);
9505: }
9506: }
9507: }
9508: }
9509: return %validations;
9510: }
9511:
9512: sub auto_crsreq_update {
9513: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,
9514: $code,$accessstart,$accessend,$inbound) = @_;
9515: my ($homeserver,%crsreqresponse);
9516: if ($cdom =~ /^$match_domain$/) {
9517: $homeserver = &domain($cdom,'primary');
9518: }
9519: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
9520: my $info;
9521: if (ref($inbound) eq 'HASH') {
9522: $info = &freeze_escape($inbound);
9523: }
9524: my $response=&reply('autocrsrequpdate:'.$cdom.':'.$cnum.':'.&escape($crstype).
9525: ':'.&escape($action).':'.&escape($ownername).':'.
9526: &escape($ownerdomain).':'.&escape($fullname).':'.
9527: &escape($title).':'.&escape($code).':'.
9528: &escape($accessstart).':'.&escape($accessend).':'.$info,
9529: $homeserver);
9530: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9531: my @items = split(/&/,$response);
9532: foreach my $item (@items) {
9533: my ($key,$value) = split('=',$item);
9534: $crsreqresponse{&unescape($key)} = &thaw_unescape($value);
9535: }
9536: }
9537: }
9538: return \%crsreqresponse;
9539: }
9540:
9541: sub auto_export_grades {
9542: my ($cdom,$cnum,$inforef,$gradesref) = @_;
9543: my ($homeserver,%exportresponse);
9544: if ($cdom =~ /^$match_domain$/) {
9545: $homeserver = &domain($cdom,'primary');
9546: }
9547: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
9548: my $info;
9549: if (ref($inforef) eq 'HASH') {
9550: $info = &freeze_escape($inforef);
9551: }
9552: if (ref($gradesref) eq 'HASH') {
9553: my $grades = &freeze_escape($gradesref);
9554: my $response=&reply('encrypt:autoexportgrades:'.$cdom.':'.$cnum.':'.
9555: $info.':'.$grades,$homeserver);
9556: unless ($response =~ /(con_lost|error|no_such_host|refused|unknown_command)/) {
9557: my @items = split(/&/,$response);
9558: foreach my $item (@items) {
9559: my ($key,$value) = split('=',$item);
9560: $exportresponse{&unescape($key)} = &thaw_unescape($value);
9561: }
9562: }
9563: }
9564: }
9565: return \%exportresponse;
9566: }
9567:
9568: sub check_instcode_cloning {
9569: my ($codedefaults,$code_order,$cloner,$clonefromcode,$clonetocode) = @_;
9570: unless ((ref($codedefaults) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
9571: return;
9572: }
9573: my $canclone;
9574: if (@{$code_order} > 0) {
9575: my $instcoderegexp ='^';
9576: my @clonecodes = split(/\&/,$cloner);
9577: foreach my $item (@{$code_order}) {
9578: if (grep(/^\Q$item\E=/,@clonecodes)) {
9579: foreach my $pair (@clonecodes) {
9580: my ($key,$val) = split(/\=/,$pair,2);
9581: $val = &unescape($val);
9582: if ($key eq $item) {
9583: $instcoderegexp .= '('.$val.')';
9584: last;
9585: }
9586: }
9587: } else {
9588: $instcoderegexp .= $codedefaults->{$item};
9589: }
9590: }
9591: $instcoderegexp .= '$';
9592: my (@from,@to);
9593: eval {
9594: (@from) = ($clonefromcode =~ /$instcoderegexp/);
9595: (@to) = ($clonetocode =~ /$instcoderegexp/);
9596: };
9597: if ((@from > 0) && (@to > 0)) {
9598: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
9599: if (!@diffs) {
9600: $canclone = 1;
9601: }
9602: }
9603: }
9604: return $canclone;
9605: }
9606:
9607: sub default_instcode_cloning {
9608: my ($clonedom,$domdefclone,$clonefromcode,$clonetocode,$codedefaultsref,$codeorderref) = @_;
9609: my (%codedefaults,@code_order,$canclone);
9610: if ((ref($codedefaultsref) eq 'HASH') && (ref($codeorderref) eq 'ARRAY')) {
9611: %codedefaults = %{$codedefaultsref};
9612: @code_order = @{$codeorderref};
9613: } elsif ($clonedom) {
9614: &auto_instcode_defaults($clonedom,\%codedefaults,\@code_order);
9615: }
9616: if (($domdefclone) && (@code_order)) {
9617: my @clonecodes = split(/\+/,$domdefclone);
9618: my $instcoderegexp ='^';
9619: foreach my $item (@code_order) {
9620: if (grep(/^\Q$item\E$/,@clonecodes)) {
9621: $instcoderegexp .= '('.$codedefaults{$item}.')';
9622: } else {
9623: $instcoderegexp .= $codedefaults{$item};
9624: }
9625: }
9626: $instcoderegexp .= '$';
9627: my (@from,@to);
9628: eval {
9629: (@from) = ($clonefromcode =~ /$instcoderegexp/);
9630: (@to) = ($clonetocode =~ /$instcoderegexp/);
9631: };
9632: if ((@from > 0) && (@to > 0)) {
9633: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
9634: if (!@diffs) {
9635: $canclone = 1;
9636: }
9637: }
9638: }
9639: return $canclone;
9640: }
9641:
9642: # ------------------------------------------------------- Course Group routines
9643:
9644: sub get_coursegroups {
9645: my ($cdom,$cnum,$group,$namespace) = @_;
9646: return(&dump($namespace,$cdom,$cnum,$group));
9647: }
9648:
9649: sub modify_coursegroup {
9650: my ($cdom,$cnum,$groupsettings) = @_;
9651: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
9652: }
9653:
9654: sub toggle_coursegroup_status {
9655: my ($cdom,$cnum,$group,$action) = @_;
9656: my ($from_namespace,$to_namespace);
9657: if ($action eq 'delete') {
9658: $from_namespace = 'coursegroups';
9659: $to_namespace = 'deleted_groups';
9660: } else {
9661: $from_namespace = 'deleted_groups';
9662: $to_namespace = 'coursegroups';
9663: }
9664: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
9665: if (my $tmp = &error(%curr_group)) {
9666: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
9667: return ('read error',$tmp);
9668: } else {
9669: my %savedsettings = %curr_group;
9670: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
9671: my $deloutcome;
9672: if ($result eq 'ok') {
9673: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
9674: } else {
9675: return ('write error',$result);
9676: }
9677: if ($deloutcome eq 'ok') {
9678: return 'ok';
9679: } else {
9680: return ('delete error',$deloutcome);
9681: }
9682: }
9683: }
9684:
9685: sub modify_group_roles {
9686: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
9687: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
9688: my $role = 'gr/'.&escape($userprivs);
9689: my ($uname,$udom) = split(/:/,$user);
9690: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
9691: if ($result eq 'ok') {
9692: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
9693: }
9694: return $result;
9695: }
9696:
9697: sub modify_coursegroup_membership {
9698: my ($cdom,$cnum,$membership) = @_;
9699: my $result = &put('groupmembership',$membership,$cdom,$cnum);
9700: return $result;
9701: }
9702:
9703: sub get_active_groups {
9704: my ($udom,$uname,$cdom,$cnum) = @_;
9705: my $now = time;
9706: my %groups = ();
9707: foreach my $key (keys(%env)) {
9708: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
9709: my ($start,$end) = split(/\./,$env{$key});
9710: if (($end!=0) && ($end<$now)) { next; }
9711: if (($start!=0) && ($start>$now)) { next; }
9712: if ($1 eq $cdom && $2 eq $cnum) {
9713: $groups{$3} = $env{$key} ;
9714: }
9715: }
9716: }
9717: return %groups;
9718: }
9719:
9720: sub get_group_membership {
9721: my ($cdom,$cnum,$group) = @_;
9722: return(&dump('groupmembership',$cdom,$cnum,$group));
9723: }
9724:
9725: sub get_users_groups {
9726: my ($udom,$uname,$courseid) = @_;
9727: my @usersgroups;
9728: my $cachetime=1800;
9729:
9730: my $hashid="$udom:$uname:$courseid";
9731: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
9732: if (defined($cached)) {
9733: @usersgroups = split(/:/,$grouplist);
9734: } else {
9735: $grouplist = '';
9736: my $courseurl = &courseid_to_courseurl($courseid);
9737: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
9738: my $access_end = $env{'course.'.$courseid.
9739: '.default_enrollment_end_date'};
9740: my $now = time;
9741: foreach my $key (keys(%roleshash)) {
9742: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
9743: my $group = $1;
9744: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
9745: my $start = $2;
9746: my $end = $1;
9747: if ($start == -1) { next; } # deleted from group
9748: if (($start!=0) && ($start>$now)) { next; }
9749: if (($end!=0) && ($end<$now)) {
9750: if ($access_end && $access_end < $now) {
9751: if ($access_end - $end < 86400) {
9752: push(@usersgroups,$group);
9753: }
9754: }
9755: next;
9756: }
9757: push(@usersgroups,$group);
9758: }
9759: }
9760: }
9761: @usersgroups = &sort_course_groups($courseid,@usersgroups);
9762: $grouplist = join(':',@usersgroups);
9763: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
9764: }
9765: return @usersgroups;
9766: }
9767:
9768: sub devalidate_getgroups_cache {
9769: my ($udom,$uname,$cdom,$cnum)=@_;
9770: my $courseid = $cdom.'_'.$cnum;
9771:
9772: my $hashid="$udom:$uname:$courseid";
9773: &devalidate_cache_new('getgroups',$hashid);
9774: }
9775:
9776: # ------------------------------------------------------------------ Plain Text
9777:
9778: sub plaintext {
9779: my ($short,$type,$cid,$forcedefault) = @_;
9780: if ($short =~ m{^cr/}) {
9781: return (split('/',$short))[-1];
9782: }
9783: if (!defined($cid)) {
9784: $cid = $env{'request.course.id'};
9785: }
9786: my %rolenames = (
9787: Course => 'std',
9788: Community => 'alt1',
9789: Placement => 'std',
9790: );
9791: if ($cid ne '') {
9792: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
9793: unless ($forcedefault) {
9794: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
9795: &Apache::lonlocal::mt_escape(\$roletext);
9796: return &Apache::lonlocal::mt($roletext);
9797: }
9798: }
9799: }
9800: if ((defined($type)) && (defined($rolenames{$type})) &&
9801: (defined($rolenames{$type})) &&
9802: (defined($prp{$short}{$rolenames{$type}}))) {
9803: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
9804: } elsif ($cid ne '') {
9805: my $crstype = $env{'course.'.$cid.'.type'};
9806: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
9807: (defined($prp{$short}{$rolenames{$crstype}}))) {
9808: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
9809: }
9810: }
9811: return &Apache::lonlocal::mt($prp{$short}{'std'});
9812: }
9813:
9814: # ----------------------------------------------------------------- Assign Role
9815:
9816: sub assignrole {
9817: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
9818: $context)=@_;
9819: my $mrole;
9820: if ($role =~ /^cr\//) {
9821: my $cwosec=$url;
9822: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
9823: unless (&allowed('ccr',$cwosec)) {
9824: my $refused = 1;
9825: if ($context eq 'requestcourses') {
9826: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
9827: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
9828: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
9829: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
9830: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9831: if ($crsenv{'internal.courseowner'} eq
9832: $env{'user.name'}.':'.$env{'user.domain'}) {
9833: $refused = '';
9834: }
9835: }
9836: }
9837: }
9838: }
9839: if ($refused) {
9840: &logthis('Refused custom assignrole: '.
9841: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
9842: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
9843: return 'refused';
9844: }
9845: }
9846: $mrole='cr';
9847: } elsif ($role =~ /^gr\//) {
9848: my $cwogrp=$url;
9849: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
9850: unless (&allowed('mdg',$cwogrp)) {
9851: &logthis('Refused group assignrole: '.
9852: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
9853: $env{'user.name'}.' at '.$env{'user.domain'});
9854: return 'refused';
9855: }
9856: $mrole='gr';
9857: } else {
9858: my $cwosec=$url;
9859: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
9860: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
9861: my $refused;
9862: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
9863: if (!(&allowed('c'.$role,$url))) {
9864: $refused = 1;
9865: }
9866: } else {
9867: $refused = 1;
9868: }
9869: if ($refused) {
9870: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
9871: if (!$selfenroll && (($context eq 'course') || ($context eq 'ltienroll' && $env{'request.lti.login'}))) {
9872: my %crsenv;
9873: if ($role eq 'cc' || $role eq 'co') {
9874: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9875: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
9876: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
9877: if ($crsenv{'internal.courseowner'} eq
9878: $env{'user.name'}.':'.$env{'user.domain'}) {
9879: $refused = '';
9880: }
9881: }
9882: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
9883: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
9884: if ($crsenv{'internal.courseowner'} eq
9885: $env{'user.name'}.':'.$env{'user.domain'}) {
9886: $refused = '';
9887: }
9888: }
9889: }
9890: }
9891: } elsif (($selfenroll == 1) && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
9892: if ($role eq 'st') {
9893: $refused = '';
9894: } elsif (($context eq 'ltienroll') && ($env{'request.lti.login'})) {
9895: $refused = '';
9896: }
9897: } elsif ($context eq 'requestcourses') {
9898: my @possroles = ('st','ta','ep','in','cc','co');
9899: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
9900: my $wrongcc;
9901: if ($cnum =~ /^$match_community$/) {
9902: $wrongcc = 1 if ($role eq 'cc');
9903: } else {
9904: $wrongcc = 1 if ($role eq 'co');
9905: }
9906: unless ($wrongcc) {
9907: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9908: if ($crsenv{'internal.courseowner'} eq
9909: $env{'user.name'}.':'.$env{'user.domain'}) {
9910: $refused = '';
9911: }
9912: }
9913: }
9914: } elsif ($context eq 'requestauthor') {
9915: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
9916: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
9917: if ($env{'environment.requestauthor'} eq 'automatic') {
9918: $refused = '';
9919: } else {
9920: my %domdefaults = &get_domain_defaults($udom);
9921: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
9922: my $checkbystatus;
9923: if ($env{'user.adv'}) {
9924: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
9925: if ($disposition eq 'automatic') {
9926: $refused = '';
9927: } elsif ($disposition eq '') {
9928: $checkbystatus = 1;
9929: }
9930: } else {
9931: $checkbystatus = 1;
9932: }
9933: if ($checkbystatus) {
9934: if ($env{'environment.inststatus'}) {
9935: my @inststatuses = split(/,/,$env{'environment.inststatus'});
9936: foreach my $type (@inststatuses) {
9937: if (($type ne '') &&
9938: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
9939: $refused = '';
9940: }
9941: }
9942: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
9943: $refused = '';
9944: }
9945: }
9946: }
9947: }
9948: }
9949: }
9950: if ($refused) {
9951: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
9952: ' '.$role.' '.$end.' '.$start.' by '.
9953: $env{'user.name'}.' at '.$env{'user.domain'});
9954: return 'refused';
9955: }
9956: }
9957: } elsif ($role eq 'au') {
9958: if ($url ne '/'.$udom.'/') {
9959: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
9960: ' to assign author role for '.$uname.':'.$udom.
9961: ' in domain: '.$url.' refused (wrong domain).');
9962: return 'refused';
9963: }
9964: }
9965: $mrole=$role;
9966: }
9967: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
9968: "$udom:$uname:$url".'_'."$mrole=$role";
9969: if ($end) { $command.='_'.$end; }
9970: if ($start) {
9971: if ($end) {
9972: $command.='_'.$start;
9973: } else {
9974: $command.='_0_'.$start;
9975: }
9976: }
9977: my $origstart = $start;
9978: my $origend = $end;
9979: my $delflag;
9980: # actually delete
9981: if ($deleteflag) {
9982: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
9983: # modify command to delete the role
9984: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
9985: "$udom:$uname:$url".'_'."$mrole";
9986: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
9987: # set start and finish to negative values for userrolelog
9988: $start=-1;
9989: $end=-1;
9990: $delflag = 1;
9991: }
9992: }
9993: # send command
9994: my $answer=&reply($command,&homeserver($uname,$udom));
9995: # log new user role if status is ok
9996: if ($answer eq 'ok') {
9997: &userrolelog($role,$uname,$udom,$url,$start,$end);
9998: if (($role eq 'cc') || ($role eq 'in') ||
9999: ($role eq 'ep') || ($role eq 'ad') ||
10000: ($role eq 'ta') || ($role eq 'st') ||
10001: ($role=~/^cr/) || ($role eq 'gr') ||
10002: ($role eq 'co')) {
10003: # for course roles, perform group memberships changes triggered by role change.
10004: unless ($role =~ /^gr/) {
10005: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
10006: $origstart,$selfenroll,$context);
10007: }
10008: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
10009: $selfenroll,$context);
10010: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
10011: ($role eq 'au') || ($role eq 'dc') || ($role eq 'dh') ||
10012: ($role eq 'da')) {
10013: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
10014: $context);
10015: } elsif (($role eq 'ca') || ($role eq 'aa')) {
10016: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
10017: $context);
10018: }
10019: if ($role eq 'cc') {
10020: &autoupdate_coowners($url,$end,$start,$uname,$udom);
10021: }
10022: }
10023: return $answer;
10024: }
10025:
10026: sub autoupdate_coowners {
10027: my ($url,$end,$start,$uname,$udom) = @_;
10028: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
10029: if (($cdom ne '') && ($cnum ne '')) {
10030: my $now = time;
10031: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
10032: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
10033: my %coursehash = &coursedescription($cdom.'_'.$cnum);
10034: my $instcode = $coursehash{'internal.coursecode'};
10035: if ($instcode ne '') {
10036: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
10037: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
10038: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
10039: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
10040: if ($result eq 'valid') {
10041: if ($coursehash{'internal.co-owners'}) {
10042: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
10043: push(@newcoowners,$coowner);
10044: }
10045: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
10046: push(@newcoowners,$uname.':'.$udom);
10047: }
10048: @newcoowners = sort(@newcoowners);
10049: } else {
10050: push(@newcoowners,$uname.':'.$udom);
10051: }
10052: } else {
10053: if ($coursehash{'internal.co-owners'}) {
10054: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
10055: unless ($coowner eq $uname.':'.$udom) {
10056: push(@newcoowners,$coowner);
10057: }
10058: }
10059: unless (@newcoowners > 0) {
10060: $delcoowners = 1;
10061: $coowners = '';
10062: }
10063: }
10064: }
10065: if (@newcoowners || $delcoowners) {
10066: &store_coowners($cdom,$cnum,$coursehash{'home'},
10067: $delcoowners,@newcoowners);
10068: }
10069: }
10070: }
10071: }
10072: }
10073: }
10074: }
10075:
10076: sub store_coowners {
10077: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
10078: my $cid = $cdom.'_'.$cnum;
10079: my ($coowners,$delresult,$putresult);
10080: if (@newcoowners) {
10081: $coowners = join(',',@newcoowners);
10082: my %coownershash = (
10083: 'internal.co-owners' => $coowners,
10084: );
10085: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
10086: if ($putresult eq 'ok') {
10087: if ($env{'course.'.$cid.'.num'} eq $cnum) {
10088: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
10089: }
10090: }
10091: }
10092: if ($delcoowners) {
10093: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
10094: if ($delresult eq 'ok') {
10095: if ($env{'course.'.$cid.'.internal.co-owners'}) {
10096: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
10097: }
10098: }
10099: }
10100: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
10101: my %crsinfo =
10102: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
10103: if (ref($crsinfo{$cid}) eq 'HASH') {
10104: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
10105: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
10106: }
10107: }
10108: }
10109:
10110: # -------------------------------------------------- Modify user authentication
10111: # Overrides without validation
10112:
10113: sub modifyuserauth {
10114: my ($udom,$uname,$umode,$upass)=@_;
10115: my $uhome=&homeserver($uname,$udom);
10116: my $allowed;
10117: if (&allowed('mau',$udom)) {
10118: $allowed = 1;
10119: } elsif (($umode eq 'internal') && ($udom eq $env{'user.domain'}) &&
10120: ($env{'request.course.id'}) && (&allowed('mip',$env{'request.course.id'})) &&
10121: (!$env{'course.'.$env{'request.course.id'}.'.internal.nopasswdchg'})) {
10122: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
10123: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
10124: if (($cdom ne '') && ($cnum ne '')) {
10125: my $is_owner = &is_course_owner($cdom,$cnum);
10126: if ($is_owner) {
10127: $allowed = 1;
10128: }
10129: }
10130: }
10131: unless ($allowed) { return 'refused'; }
10132: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
10133: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
10134: ' in domain '.$env{'request.role.domain'});
10135: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
10136: &escape($upass),$uhome);
10137: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
10138: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
10139: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
10140: &log($udom,,$uname,$uhome,
10141: 'Authentication changed by '.$env{'user.domain'}.', '.
10142: $env{'user.name'}.', '.$umode.
10143: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
10144: unless ($reply eq 'ok') {
10145: &logthis('Authentication mode error: '.$reply);
10146: return 'error: '.$reply;
10147: }
10148: return 'ok';
10149: }
10150:
10151: # --------------------------------------------------------------- Modify a user
10152:
10153: sub modifyuser {
10154: my ($udom, $uname, $uid,
10155: $umode, $upass, $first,
10156: $middle, $last, $gene,
10157: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
10158: $udom= &LONCAPA::clean_domain($udom);
10159: $uname=&LONCAPA::clean_username($uname);
10160: my $showcandelete = 'none';
10161: if (ref($candelete) eq 'ARRAY') {
10162: if (@{$candelete} > 0) {
10163: $showcandelete = join(', ',@{$candelete});
10164: }
10165: }
10166: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
10167: $umode.', '.$first.', '.$middle.', '.
10168: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
10169: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
10170: ' desiredhome not specified').
10171: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
10172: ' in domain '.$env{'request.role.domain'});
10173: my $uhome=&homeserver($uname,$udom,'true');
10174: my $newuser;
10175: if ($uhome eq 'no_host') {
10176: $newuser = 1;
10177: unless (($umode && ($upass ne '')) || ($umode eq 'localauth') ||
10178: ($umode eq 'lti')) {
10179: return 'error: more information needed to create new user';
10180: }
10181: }
10182: # ----------------------------------------------------------------- Create User
10183: if (($uhome eq 'no_host') &&
10184: (($umode && $upass) || ($umode eq 'localauth') || ($umode eq 'lti'))) {
10185: my $unhome='';
10186: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
10187: $unhome = $desiredhome;
10188: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
10189: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
10190: } else { # load balancing routine for determining $unhome
10191: my $loadm=10000000;
10192: my %servers = &get_servers($udom,'library');
10193: foreach my $tryserver (keys(%servers)) {
10194: my $answer=reply('load',$tryserver);
10195: if (($answer=~/\d+/) && ($answer<$loadm)) {
10196: $loadm=$answer;
10197: $unhome=$tryserver;
10198: }
10199: }
10200: }
10201: if (($unhome eq '') || ($unhome eq 'no_host')) {
10202: return 'error: unable to find a home server for '.$uname.
10203: ' in domain '.$udom;
10204: }
10205: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
10206: &escape($upass),$unhome);
10207: unless ($reply eq 'ok') {
10208: return 'error: '.$reply;
10209: }
10210: $uhome=&homeserver($uname,$udom,'true');
10211: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
10212: return 'error: unable verify users home machine.';
10213: }
10214: } # End of creation of new user
10215: # ---------------------------------------------------------------------- Add ID
10216: if ($uid) {
10217: $uid=~tr/A-Z/a-z/;
10218: my %uidhash=&idrget($udom,$uname);
10219: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
10220: && (!$forceid)) {
10221: unless ($uid eq $uidhash{$uname}) {
10222: return 'error: user id "'.$uid.'" does not match '.
10223: 'current user id "'.$uidhash{$uname}.'".';
10224: }
10225: } else {
10226: &idput($udom,{$uname => $uid},$uhome,'ids');
10227: }
10228: }
10229: # -------------------------------------------------------------- Add names, etc
10230: my @tmp=&get('environment',
10231: ['firstname','middlename','lastname','generation','id',
10232: 'permanentemail','inststatus'],
10233: $udom,$uname);
10234: my (%names,%oldnames);
10235: if ($tmp[0] =~ m/^error:.*/) {
10236: %names=();
10237: } else {
10238: %names = @tmp;
10239: %oldnames = %names;
10240: }
10241: #
10242: # If name, email and/or uid are blank (e.g., because an uploaded file
10243: # of users did not contain them), do not overwrite existing values
10244: # unless field is in $candelete array ref.
10245: #
10246:
10247: my @fields = ('firstname','middlename','lastname','generation',
10248: 'permanentemail','id');
10249: my %newvalues;
10250: if (ref($candelete) eq 'ARRAY') {
10251: foreach my $field (@fields) {
10252: if (grep(/^\Q$field\E$/,@{$candelete})) {
10253: if ($field eq 'firstname') {
10254: $names{$field} = $first;
10255: } elsif ($field eq 'middlename') {
10256: $names{$field} = $middle;
10257: } elsif ($field eq 'lastname') {
10258: $names{$field} = $last;
10259: } elsif ($field eq 'generation') {
10260: $names{$field} = $gene;
10261: } elsif ($field eq 'permanentemail') {
10262: $names{$field} = $email;
10263: } elsif ($field eq 'id') {
10264: $names{$field} = $uid;
10265: }
10266: }
10267: }
10268: }
10269: if ($first) { $names{'firstname'} = $first; }
10270: if (defined($middle)) { $names{'middlename'} = $middle; }
10271: if ($last) { $names{'lastname'} = $last; }
10272: if (defined($gene)) { $names{'generation'} = $gene; }
10273: if ($email) {
10274: $email=~s/[^\w\@\.\-\,]//gs;
10275: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
10276: }
10277: if ($uid) { $names{'id'} = $uid; }
10278: if (defined($inststatus)) {
10279: $names{'inststatus'} = '';
10280: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
10281: if (ref($usertypes) eq 'HASH') {
10282: my @okstatuses;
10283: foreach my $item (split(/:/,$inststatus)) {
10284: if (defined($usertypes->{$item})) {
10285: push(@okstatuses,$item);
10286: }
10287: }
10288: if (@okstatuses) {
10289: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
10290: }
10291: }
10292: }
10293: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
10294: $umode.', '.$first.', '.$middle.', '.
10295: $last.', '.$gene.', '.$email.', '.$inststatus;
10296: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
10297: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
10298: } else {
10299: $logmsg .= ' during self creation';
10300: }
10301: my $changed;
10302: if ($newuser) {
10303: $changed = 1;
10304: } else {
10305: foreach my $field (@fields) {
10306: if ($names{$field} ne $oldnames{$field}) {
10307: $changed = 1;
10308: last;
10309: }
10310: }
10311: }
10312: unless ($changed) {
10313: $logmsg = 'No changes in user information needed for: '.$logmsg;
10314: &logthis($logmsg);
10315: return 'ok';
10316: }
10317: my $reply = &put('environment', \%names, $udom,$uname);
10318: if ($reply ne 'ok') {
10319: return 'error: '.$reply;
10320: }
10321: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
10322: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
10323: }
10324: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
10325: &devalidate_cache_new('namescache',$uname.':'.$udom);
10326: $logmsg = 'Success modifying user '.$logmsg;
10327: &logthis($logmsg);
10328: return 'ok';
10329: }
10330:
10331: # -------------------------------------------------------------- Modify student
10332:
10333: sub modifystudent {
10334: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
10335: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
10336: $selfenroll,$context,$inststatus,$credits,$instsec)=@_;
10337: if (!$cid) {
10338: unless ($cid=$env{'request.course.id'}) {
10339: return 'not_in_class';
10340: }
10341: }
10342: # --------------------------------------------------------------- Make the user
10343: my $reply=&modifyuser
10344: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
10345: $desiredhome,$email,$inststatus);
10346: unless ($reply eq 'ok') { return $reply; }
10347: # This will cause &modify_student_enrollment to get the uid from the
10348: # student's environment
10349: $uid = undef if (!$forceid);
10350: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
10351: $gene,$usec,$end,$start,$type,$locktype,
10352: $cid,$selfenroll,$context,$credits,$instsec);
10353: return $reply;
10354: }
10355:
10356: sub modify_student_enrollment {
10357: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
10358: $locktype,$cid,$selfenroll,$context,$credits,$instsec) = @_;
10359: my ($cdom,$cnum,$chome);
10360: if (!$cid) {
10361: unless ($cid=$env{'request.course.id'}) {
10362: return 'not_in_class';
10363: }
10364: $cdom=$env{'course.'.$cid.'.domain'};
10365: $cnum=$env{'course.'.$cid.'.num'};
10366: } else {
10367: ($cdom,$cnum)=split(/_/,$cid);
10368: }
10369: $chome=$env{'course.'.$cid.'.home'};
10370: if (!$chome) {
10371: $chome=&homeserver($cnum,$cdom);
10372: }
10373: if (!$chome) { return 'unknown_course'; }
10374: # Make sure the user exists
10375: my $uhome=&homeserver($uname,$udom);
10376: if (($uhome eq '') || ($uhome eq 'no_host')) {
10377: return 'error: no such user';
10378: }
10379: # Get student data if we were not given enough information
10380: if (!defined($first) || $first eq '' ||
10381: !defined($last) || $last eq '' ||
10382: !defined($uid) || $uid eq '' ||
10383: !defined($middle) || $middle eq '' ||
10384: !defined($gene) || $gene eq '') {
10385: # They did not supply us with enough data to enroll the student, so
10386: # we need to pick up more information.
10387: my %tmp = &get('environment',
10388: ['firstname','middlename','lastname', 'generation','id']
10389: ,$udom,$uname);
10390:
10391: #foreach my $key (keys(%tmp)) {
10392: # &logthis("key $key = ".$tmp{$key});
10393: #}
10394: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
10395: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
10396: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
10397: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
10398: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
10399: }
10400: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
10401: my $user = "$uname:$udom";
10402: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
10403: my $reply=cput('classlist',
10404: {$user =>
10405: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits,$instsec) },
10406: $cdom,$cnum);
10407: if (($reply eq 'ok') || ($reply eq 'delayed')) {
10408: &devalidate_getsection_cache($udom,$uname,$cid);
10409: } else {
10410: return 'error: '.$reply;
10411: }
10412: # Add student role to user
10413: my $uurl='/'.$cid;
10414: $uurl=~s/\_/\//g;
10415: if ($usec) {
10416: $uurl.='/'.$usec;
10417: }
10418: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
10419: $selfenroll,$context);
10420: if ($result ne 'ok') {
10421: if ($old_entry{$user} ne '') {
10422: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
10423: } else {
10424: $reply = &del('classlist',[$user],$cdom,$cnum);
10425: }
10426: }
10427: return $result;
10428: }
10429:
10430: sub format_name {
10431: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
10432: my $name;
10433: if ($first ne 'lastname') {
10434: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
10435: } else {
10436: if ($lastname=~/\S/) {
10437: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
10438: $name=~s/\s+,/,/;
10439: } else {
10440: $name.= $firstname.' '.$middlename.' '.$generation;
10441: }
10442: }
10443: $name=~s/^\s+//;
10444: $name=~s/\s+$//;
10445: $name=~s/\s+/ /g;
10446: return $name;
10447: }
10448:
10449: # ------------------------------------------------- Write to course preferences
10450:
10451: sub writecoursepref {
10452: my ($courseid,%prefs)=@_;
10453: $courseid=~s/^\///;
10454: $courseid=~s/\_/\//g;
10455: my ($cdomain,$cnum)=split(/\//,$courseid);
10456: my $chome=homeserver($cnum,$cdomain);
10457: if (($chome eq '') || ($chome eq 'no_host')) {
10458: return 'error: no such course';
10459: }
10460: my $cstring='';
10461: foreach my $pref (keys(%prefs)) {
10462: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
10463: }
10464: $cstring=~s/\&$//;
10465: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
10466: }
10467:
10468: # ---------------------------------------------------------- Make/modify course
10469:
10470: sub createcourse {
10471: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
10472: $course_owner,$crstype,$cnum,$context,$category)=@_;
10473: $url=&declutter($url);
10474: my $cid='';
10475: if ($context eq 'requestcourses') {
10476: my $can_create = 0;
10477: my ($ownername,$ownerdom) = split(':',$course_owner);
10478: if ($udom eq $ownerdom) {
10479: if (&usertools_access($ownername,$ownerdom,$category,undef,
10480: $context)) {
10481: $can_create = 1;
10482: }
10483: } else {
10484: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
10485: $category);
10486: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
10487: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
10488: if (@curr > 0) {
10489: my @options = qw(approval validate autolimit);
10490: my $optregex = join('|',@options);
10491: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
10492: $can_create = 1;
10493: }
10494: }
10495: }
10496: }
10497: if ($can_create) {
10498: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
10499: unless (&allowed('ccc',$udom)) {
10500: return 'refused';
10501: }
10502: }
10503: } else {
10504: return 'refused';
10505: }
10506: } elsif (!&allowed('ccc',$udom)) {
10507: return 'refused';
10508: }
10509: # --------------------------------------------------------------- Get Unique ID
10510: my $uname;
10511: if ($cnum =~ /^$match_courseid$/) {
10512: my $chome=&homeserver($cnum,$udom,'true');
10513: if (($chome eq '') || ($chome eq 'no_host')) {
10514: $uname = $cnum;
10515: } else {
10516: $uname = &generate_coursenum($udom,$crstype);
10517: }
10518: } else {
10519: $uname = &generate_coursenum($udom,$crstype);
10520: }
10521: return $uname if ($uname =~ /^error/);
10522: # -------------------------------------------------- Check supplied server name
10523: if (!defined($course_server)) {
10524: if (defined(&domain($udom,'primary'))) {
10525: $course_server = &domain($udom,'primary');
10526: } else {
10527: $course_server = $env{'user.home'};
10528: }
10529: }
10530: my %host_servers =
10531: &Apache::lonnet::get_servers($udom,'library');
10532: unless ($host_servers{$course_server}) {
10533: return 'error: invalid home server for course: '.$course_server;
10534: }
10535: # ------------------------------------------------------------- Make the course
10536: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
10537: $course_server);
10538: unless ($reply eq 'ok') { return 'error: '.$reply; }
10539: my $uhome=&homeserver($uname,$udom,'true');
10540: if (($uhome eq '') || ($uhome eq 'no_host')) {
10541: return 'error: no such course';
10542: }
10543: # ----------------------------------------------------------------- Course made
10544: # log existence
10545: my $now = time;
10546: my $newcourse = {
10547: $udom.'_'.$uname => {
10548: description => $description,
10549: inst_code => $inst_code,
10550: owner => $course_owner,
10551: type => $crstype,
10552: creator => $env{'user.name'}.':'.
10553: $env{'user.domain'},
10554: created => $now,
10555: context => $context,
10556: },
10557: };
10558: &courseidput($udom,$newcourse,$uhome,'notime');
10559: # set toplevel url
10560: my $topurl=$url;
10561: unless ($nonstandard) {
10562: # ------------------------------------------ For standard courses, make top url
10563: my $mapurl=&clutter($url);
10564: if ($mapurl eq '/res/') { $mapurl=''; }
10565: $env{'form.initmap'}=(<<ENDINITMAP);
10566: <map>
10567: <resource id="1" type="start"></resource>
10568: <resource id="2" src="$mapurl"></resource>
10569: <resource id="3" type="finish"></resource>
10570: <link index="1" from="1" to="2"></link>
10571: <link index="2" from="2" to="3"></link>
10572: </map>
10573: ENDINITMAP
10574: $topurl=&declutter(
10575: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
10576: );
10577: }
10578: # ----------------------------------------------------------- Write preferences
10579: &writecoursepref($udom.'_'.$uname,
10580: ('description' => $description,
10581: 'url' => $topurl,
10582: 'internal.creator' => $env{'user.name'}.':'.
10583: $env{'user.domain'},
10584: 'internal.created' => $now,
10585: 'internal.creationcontext' => $context)
10586: );
10587: return '/'.$udom.'/'.$uname;
10588: }
10589:
10590: # ------------------------------------------------------------------- Create ID
10591: sub generate_coursenum {
10592: my ($udom,$crstype) = @_;
10593: my $domdesc = &domain($udom);
10594: return 'error: invalid domain' if ($domdesc eq '');
10595: my $first;
10596: if ($crstype eq 'Community') {
10597: $first = '0';
10598: } else {
10599: $first = int(1+rand(9));
10600: }
10601: my $uname=$first.
10602: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
10603: substr($$.time,0,5).unpack("H8",pack("I32",time)).
10604: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
10605: # ----------------------------------------------- Make sure that does not exist
10606: my $uhome=&homeserver($uname,$udom,'true');
10607: unless (($uhome eq '') || ($uhome eq 'no_host')) {
10608: if ($crstype eq 'Community') {
10609: $first = '0';
10610: } else {
10611: $first = int(1+rand(9));
10612: }
10613: $uname=$first.
10614: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
10615: substr($$.time,0,5).unpack("H8",pack("I32",time)).
10616: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
10617: $uhome=&homeserver($uname,$udom,'true');
10618: unless (($uhome eq '') || ($uhome eq 'no_host')) {
10619: return 'error: unable to generate unique course-ID';
10620: }
10621: }
10622: return $uname;
10623: }
10624:
10625: sub is_course {
10626: my ($cdom, $cnum) = scalar(@_) == 1 ?
10627: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
10628:
10629: return unless (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/));
10630: my $uhome=&homeserver($cnum,$cdom);
10631: my $iscourse;
10632: if (grep { $_ eq $uhome } current_machine_ids()) {
10633: $iscourse = &LONCAPA::Lond::is_course($cdom,$cnum);
10634: } else {
10635: my $hashid = $cdom.':'.$cnum;
10636: ($iscourse,my $cached) = &is_cached_new('iscourse',$hashid);
10637: unless (defined($cached)) {
10638: my %courses = &courseiddump($cdom, '.', 1, '.', '.',
10639: $cnum,undef,undef,'.');
10640: $iscourse = 0;
10641: if (exists($courses{$cdom.'_'.$cnum})) {
10642: $iscourse = 1;
10643: }
10644: &do_cache_new('iscourse',$hashid,$iscourse,3600);
10645: }
10646: }
10647: return unless ($iscourse);
10648: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
10649: }
10650:
10651: sub store_userdata {
10652: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
10653: my $result;
10654: if ($datakey ne '') {
10655: if (ref($storehash) eq 'HASH') {
10656: if ($udom eq '' || $uname eq '') {
10657: $udom = $env{'user.domain'};
10658: $uname = $env{'user.name'};
10659: }
10660: my $uhome=&homeserver($uname,$udom);
10661: if (($uhome eq '') || ($uhome eq 'no_host')) {
10662: $result = 'error: no_host';
10663: } else {
10664: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
10665: $storehash->{'host'} = $perlvar{'lonHostID'};
10666:
10667: my $namevalue='';
10668: foreach my $key (keys(%{$storehash})) {
10669: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
10670: }
10671: $namevalue=~s/\&$//;
10672: unless ($namespace eq 'courserequests') {
10673: $datakey = &escape($datakey);
10674: }
10675: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
10676: $namevalue,$uhome);
10677: }
10678: } else {
10679: $result = 'error: data to store was not a hash reference';
10680: }
10681: } else {
10682: $result= 'error: invalid requestkey';
10683: }
10684: return $result;
10685: }
10686:
10687: # ---------------------------------------------------------- Assign Custom Role
10688:
10689: sub assigncustomrole {
10690: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
10691: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
10692: $end,$start,$deleteflag,$selfenroll,$context);
10693: }
10694:
10695: # ----------------------------------------------------------------- Revoke Role
10696:
10697: sub revokerole {
10698: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
10699: my $now=time;
10700: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
10701: }
10702:
10703: # ---------------------------------------------------------- Revoke Custom Role
10704:
10705: sub revokecustomrole {
10706: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
10707: my $now=time;
10708: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
10709: $deleteflag,$selfenroll,$context);
10710: }
10711:
10712: # ------------------------------------------------------------ Disk usage
10713: sub diskusage {
10714: my ($udom,$uname,$directorypath,$getpropath)=@_;
10715: $directorypath =~ s/\/$//;
10716: my $listing=&reply('du2:'.&escape($directorypath).':'
10717: .&escape($getpropath).':'.&escape($uname).':'
10718: .&escape($udom),homeserver($uname,$udom));
10719: if ($listing eq 'unknown_cmd') {
10720: if ($getpropath) {
10721: $directorypath = &propath($udom,$uname).'/'.$directorypath;
10722: }
10723: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
10724: }
10725: return $listing;
10726: }
10727:
10728: sub is_locked {
10729: my ($file_name, $domain, $user, $which) = @_;
10730: my @check;
10731: my $is_locked;
10732: push (@check,$file_name);
10733: my %locked = &get('file_permissions',\@check,
10734: $env{'user.domain'},$env{'user.name'});
10735: my ($tmp)=keys(%locked);
10736: if ($tmp=~/^error:/) { undef(%locked); }
10737:
10738: if (ref($locked{$file_name}) eq 'ARRAY') {
10739: $is_locked = 'false';
10740: foreach my $entry (@{$locked{$file_name}}) {
10741: if (ref($entry) eq 'ARRAY') {
10742: $is_locked = 'true';
10743: if (ref($which) eq 'ARRAY') {
10744: push(@{$which},$entry);
10745: } else {
10746: last;
10747: }
10748: }
10749: }
10750: } else {
10751: $is_locked = 'false';
10752: }
10753: return $is_locked;
10754: }
10755:
10756: sub declutter_portfile {
10757: my ($file) = @_;
10758: $file =~ s{^(/portfolio/|portfolio/)}{/};
10759: return $file;
10760: }
10761:
10762: # ------------------------------------------------------------- Mark as Read Only
10763:
10764: sub mark_as_readonly {
10765: my ($domain,$user,$files,$what) = @_;
10766: my %current_permissions = &dump('file_permissions',$domain,$user);
10767: my ($tmp)=keys(%current_permissions);
10768: if ($tmp=~/^error:/) { undef(%current_permissions); }
10769: foreach my $file (@{$files}) {
10770: $file = &declutter_portfile($file);
10771: push(@{$current_permissions{$file}},$what);
10772: }
10773: &put('file_permissions',\%current_permissions,$domain,$user);
10774: return;
10775: }
10776:
10777: # ------------------------------------------------------------Save Selected Files
10778:
10779: sub save_selected_files {
10780: my ($user, $path, @files) = @_;
10781: my $filename = $user."savedfiles";
10782: my @other_files = &files_not_in_path($user, $path);
10783: open (OUT,'>',LONCAPA::tempdir().$filename);
10784: foreach my $file (@files) {
10785: print (OUT $env{'form.currentpath'}.$file."\n");
10786: }
10787: foreach my $file (@other_files) {
10788: print (OUT $file."\n");
10789: }
10790: close (OUT);
10791: return 'ok';
10792: }
10793:
10794: sub clear_selected_files {
10795: my ($user) = @_;
10796: my $filename = $user."savedfiles";
10797: open (OUT,'>',LONCAPA::tempdir().$filename);
10798: print (OUT undef);
10799: close (OUT);
10800: return ("ok");
10801: }
10802:
10803: sub files_in_path {
10804: my ($user, $path) = @_;
10805: my $filename = $user."savedfiles";
10806: my %return_files;
10807: open (IN,'<',LONCAPA::tempdir().$filename);
10808: while (my $line_in = <IN>) {
10809: chomp ($line_in);
10810: my @paths_and_file = split (m!/!, $line_in);
10811: my $file_part = pop (@paths_and_file);
10812: my $path_part = join ('/', @paths_and_file);
10813: $path_part.='/';
10814: my $path_and_file = $path_part.$file_part;
10815: if ($path_part eq $path) {
10816: $return_files{$file_part}= 'selected';
10817: }
10818: }
10819: close (IN);
10820: return (\%return_files);
10821: }
10822:
10823: # called in portfolio select mode, to show files selected NOT in current directory
10824: sub files_not_in_path {
10825: my ($user, $path) = @_;
10826: my $filename = $user."savedfiles";
10827: my @return_files;
10828: my $path_part;
10829: open(IN, '<',LONCAPA::tempdir().$filename);
10830: while (my $line = <IN>) {
10831: #ok, I know it's clunky, but I want it to work
10832: my @paths_and_file = split(m|/|, $line);
10833: my $file_part = pop(@paths_and_file);
10834: chomp($file_part);
10835: my $path_part = join('/', @paths_and_file);
10836: $path_part .= '/';
10837: my $path_and_file = $path_part.$file_part;
10838: if ($path_part ne $path) {
10839: push(@return_files, ($path_and_file));
10840: }
10841: }
10842: close(OUT);
10843: return (@return_files);
10844: }
10845:
10846: #------------------------------Submitted/Handedback Portfolio Files Versioning
10847:
10848: sub portfiles_versioning {
10849: my ($symb,$domain,$stu_name,$portfiles,$versioned_portfiles) = @_;
10850: my $portfolio_root = '/userfiles/portfolio';
10851: return unless ((ref($portfiles) eq 'ARRAY') && (ref($versioned_portfiles) eq 'ARRAY'));
10852: foreach my $file (@{$portfiles}) {
10853: &unmark_as_readonly($domain,$stu_name,[$symb,$env{'request.course.id'}],$file);
10854: my ($directory,$answer_file) =($file =~ /^(.*?)([^\/]*)$/);
10855: my ($answer_name,$answer_ver,$answer_ext) = &file_name_version_ext($answer_file);
10856: my $getpropath = 1;
10857: my ($dir_list,$listerror) = &dirlist($portfolio_root.$directory,$domain,
10858: $stu_name,$getpropath);
10859: my $version = &get_next_version($answer_name,$answer_ext,$dir_list);
10860: my $new_answer =
10861: &version_selected_portfile($domain,$stu_name,$directory,$answer_file,$version);
10862: if ($new_answer ne 'problem getting file') {
10863: push(@{$versioned_portfiles}, $directory.$new_answer);
10864: &mark_as_readonly($domain,$stu_name,[$directory.$new_answer],
10865: [$symb,$env{'request.course.id'},'graded']);
10866: }
10867: }
10868: }
10869:
10870: sub get_next_version {
10871: my ($answer_name, $answer_ext, $dir_list) = @_;
10872: my $version;
10873: if (ref($dir_list) eq 'ARRAY') {
10874: foreach my $row (@{$dir_list}) {
10875: my ($file) = split(/\&/,$row,2);
10876: my ($file_name,$file_version,$file_ext) =
10877: &file_name_version_ext($file);
10878: if (($file_name eq $answer_name) &&
10879: ($file_ext eq $answer_ext)) {
10880: # gets here if filename and extension match,
10881: # regardless of version
10882: if ($file_version ne '') {
10883: # a versioned file is found so save it for later
10884: if ($file_version > $version) {
10885: $version = $file_version;
10886: }
10887: }
10888: }
10889: }
10890: }
10891: $version ++;
10892: return($version);
10893: }
10894:
10895: sub version_selected_portfile {
10896: my ($domain,$stu_name,$directory,$file_name,$version) = @_;
10897: my ($answer_name,$answer_ver,$answer_ext) =
10898: &file_name_version_ext($file_name);
10899: my $new_answer;
10900: $env{'form.copy'} =
10901: &getfile("/uploaded/$domain/$stu_name/portfolio$directory$file_name");
10902: if($env{'form.copy'} eq '-1') {
10903: $new_answer = 'problem getting file';
10904: } else {
10905: $new_answer = $answer_name.'.'.$version.'.'.$answer_ext;
10906: my $copy_result =
10907: &finishuserfileupload($stu_name,$domain,'copy',
10908: '/portfolio'.$directory.$new_answer);
10909: }
10910: undef($env{'form.copy'});
10911: return ($new_answer);
10912: }
10913:
10914: sub file_name_version_ext {
10915: my ($file)=@_;
10916: my @file_parts = split(/\./, $file);
10917: my ($name,$version,$ext);
10918: if (@file_parts > 1) {
10919: $ext=pop(@file_parts);
10920: if (@file_parts > 1 && $file_parts[-1] =~ /^\d+$/) {
10921: $version=pop(@file_parts);
10922: }
10923: $name=join('.',@file_parts);
10924: } else {
10925: $name=join('.',@file_parts);
10926: }
10927: return($name,$version,$ext);
10928: }
10929:
10930: #----------------------------------------------Get portfolio file permissions
10931:
10932: sub get_portfile_permissions {
10933: my ($domain,$user) = @_;
10934: my %current_permissions = &dump('file_permissions',$domain,$user);
10935: my ($tmp)=keys(%current_permissions);
10936: if ($tmp=~/^error:/) { undef(%current_permissions); }
10937: return \%current_permissions;
10938: }
10939:
10940: #---------------------------------------------Get portfolio file access controls
10941:
10942: sub get_access_controls {
10943: my ($current_permissions,$group,$file) = @_;
10944: my %access;
10945: my $real_file = $file;
10946: $file =~ s/\.meta$//;
10947: if (defined($file)) {
10948: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
10949: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
10950: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
10951: }
10952: }
10953: } else {
10954: foreach my $key (keys(%{$current_permissions})) {
10955: if ($key =~ /\0accesscontrol$/) {
10956: if (defined($group)) {
10957: if ($key !~ m-^\Q$group\E/-) {
10958: next;
10959: }
10960: }
10961: my ($fullpath) = split(/\0/,$key);
10962: if (ref($$current_permissions{$key}) eq 'HASH') {
10963: foreach my $control (keys(%{$$current_permissions{$key}})) {
10964: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
10965: }
10966: }
10967: }
10968: }
10969: }
10970: return %access;
10971: }
10972:
10973: sub modify_access_controls {
10974: my ($file_name,$changes,$domain,$user)=@_;
10975: my ($outcome,$deloutcome);
10976: my %store_permissions;
10977: my %new_values;
10978: my %new_control;
10979: my %translation;
10980: my @deletions = ();
10981: my $now = time;
10982: if (exists($$changes{'activate'})) {
10983: if (ref($$changes{'activate'}) eq 'HASH') {
10984: my @newitems = sort(keys(%{$$changes{'activate'}}));
10985: my $numnew = scalar(@newitems);
10986: for (my $i=0; $i<$numnew; $i++) {
10987: my $newkey = $newitems[$i];
10988: my $newid = &Apache::loncommon::get_cgi_id();
10989: if ($newkey =~ /^\d+:/) {
10990: $newkey =~ s/^(\d+)/$newid/;
10991: $translation{$1} = $newid;
10992: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
10993: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
10994: $translation{$1} = $newid;
10995: }
10996: $new_values{$file_name."\0".$newkey} =
10997: $$changes{'activate'}{$newitems[$i]};
10998: $new_control{$newkey} = $now;
10999: }
11000: }
11001: }
11002: my %todelete;
11003: my %changed_items;
11004: foreach my $action ('delete','update') {
11005: if (exists($$changes{$action})) {
11006: if (ref($$changes{$action}) eq 'HASH') {
11007: foreach my $key (keys(%{$$changes{$action}})) {
11008: my ($itemnum) = ($key =~ /^([^:]+):/);
11009: if ($action eq 'delete') {
11010: $todelete{$itemnum} = 1;
11011: } else {
11012: $changed_items{$itemnum} = $key;
11013: }
11014: }
11015: }
11016: }
11017: }
11018: # get lock on access controls for file.
11019: my $lockhash = {
11020: $file_name."\0".'locked_access_records' => $env{'user.name'}.
11021: ':'.$env{'user.domain'},
11022: };
11023: my $tries = 0;
11024: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
11025:
11026: while (($gotlock ne 'ok') && $tries < 10) {
11027: $tries ++;
11028: sleep(0.1);
11029: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
11030: }
11031: if ($gotlock eq 'ok') {
11032: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
11033: my ($tmp)=keys(%curr_permissions);
11034: if ($tmp=~/^error:/) { undef(%curr_permissions); }
11035: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
11036: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
11037: if (ref($curr_controls) eq 'HASH') {
11038: foreach my $control_item (keys(%{$curr_controls})) {
11039: my ($itemnum) = ($control_item =~ /^([^:]+):/);
11040: if (defined($todelete{$itemnum})) {
11041: push(@deletions,$file_name."\0".$control_item);
11042: } else {
11043: if (defined($changed_items{$itemnum})) {
11044: $new_control{$changed_items{$itemnum}} = $now;
11045: push(@deletions,$file_name."\0".$control_item);
11046: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
11047: } else {
11048: $new_control{$control_item} = $$curr_controls{$control_item};
11049: }
11050: }
11051: }
11052: }
11053: }
11054: my ($group);
11055: if (&is_course($domain,$user)) {
11056: ($group,my $file) = split(/\//,$file_name,2);
11057: }
11058: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
11059: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
11060: $outcome = &put('file_permissions',\%new_values,$domain,$user);
11061: # remove lock
11062: my @del_lock = ($file_name."\0".'locked_access_records');
11063: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
11064: my $sqlresult =
11065: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
11066: $group);
11067: } else {
11068: $outcome = "error: could not obtain lockfile\n";
11069: }
11070: return ($outcome,$deloutcome,\%new_values,\%translation);
11071: }
11072:
11073: sub make_public_indefinitely {
11074: my (@requrl) = @_;
11075: return &automated_portfile_access('public',\@requrl);
11076: }
11077:
11078: sub automated_portfile_access {
11079: my ($accesstype,$addsref,$delsref,$info) = @_;
11080: unless (($accesstype eq 'public') || ($accesstype eq 'ip')) {
11081: return 'invalid';
11082: }
11083: my %urls;
11084: if (ref($addsref) eq 'ARRAY') {
11085: foreach my $requrl (@{$addsref}) {
11086: if (&is_portfolio_url($requrl)) {
11087: unless (exists($urls{$requrl})) {
11088: $urls{$requrl} = 'add';
11089: }
11090: }
11091: }
11092: }
11093: if (ref($delsref) eq 'ARRAY') {
11094: foreach my $requrl (@{$delsref}) {
11095: if (&is_portfolio_url($requrl)) {
11096: unless (exists($urls{$requrl})) {
11097: $urls{$requrl} = 'delete';
11098: }
11099: }
11100: }
11101: }
11102: unless (keys(%urls)) {
11103: return 'invalid';
11104: }
11105: my $ip;
11106: if ($accesstype eq 'ip') {
11107: if (ref($info) eq 'HASH') {
11108: if ($info->{'ip'} ne '') {
11109: $ip = $info->{'ip'};
11110: }
11111: }
11112: if ($ip eq '') {
11113: return 'invalid';
11114: }
11115: }
11116: my $errors;
11117: my $now = time;
11118: my %current_perms;
11119: foreach my $requrl (sort(keys(%urls))) {
11120: my $action;
11121: if ($urls{$requrl} eq 'add') {
11122: $action = 'activate';
11123: } else {
11124: $action = 'none';
11125: }
11126: my $aclnum = 0;
11127: my (undef,$udom,$unum,$file_name,$group) =
11128: &parse_portfolio_url($requrl);
11129: unless (exists($current_perms{$unum.':'.$udom})) {
11130: $current_perms{$unum.':'.$udom} = &get_portfile_permissions($udom,$unum);
11131: }
11132: my %access_controls = &get_access_controls($current_perms{$unum.':'.$udom},
11133: $group,$file_name);
11134: foreach my $key (keys(%{$access_controls{$file_name}})) {
11135: my ($num,$scope,$end,$start) =
11136: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
11137: if ($scope eq $accesstype) {
11138: if (($start <= $now) && ($end == 0)) {
11139: if ($accesstype eq 'ip') {
11140: if (ref($access_controls{$file_name}{$key}) eq 'HASH') {
11141: if (ref($access_controls{$file_name}{$key}{'ip'}) eq 'ARRAY') {
11142: if (grep(/^\Q$ip\E$/,@{$access_controls{$file_name}{$key}{'ip'}})) {
11143: if ($urls{$requrl} eq 'add') {
11144: $action = 'none';
11145: last;
11146: } else {
11147: $action = 'delete';
11148: $aclnum = $num;
11149: last;
11150: }
11151: }
11152: }
11153: }
11154: } elsif ($accesstype eq 'public') {
11155: if ($urls{$requrl} eq 'add') {
11156: $action = 'none';
11157: last;
11158: } else {
11159: $action = 'delete';
11160: $aclnum = $num;
11161: last;
11162: }
11163: }
11164: } elsif ($accesstype eq 'public') {
11165: $action = 'update';
11166: $aclnum = $num;
11167: last;
11168: }
11169: }
11170: }
11171: if ($action eq 'none') {
11172: next;
11173: } else {
11174: my %changes;
11175: my $newend = 0;
11176: my $newstart = $now;
11177: my $newkey = $aclnum.':'.$accesstype.'_'.$newend.'_'.$newstart;
11178: $changes{$action}{$newkey} = {
11179: type => $accesstype,
11180: time => {
11181: start => $newstart,
11182: end => $newend,
11183: },
11184: };
11185: if ($accesstype eq 'ip') {
11186: $changes{$action}{$newkey}{'ip'} = [$ip];
11187: }
11188: my ($outcome,$deloutcome,$new_values,$translation) =
11189: &modify_access_controls($file_name,\%changes,$udom,$unum);
11190: unless ($outcome eq 'ok') {
11191: $errors .= $outcome.' ';
11192: }
11193: }
11194: }
11195: if ($errors) {
11196: $errors =~ s/\s$//;
11197: return $errors;
11198: } else {
11199: return 'ok';
11200: }
11201: }
11202:
11203: #------------------------------------------------------Get Marked as Read Only
11204:
11205: sub get_marked_as_readonly {
11206: my ($domain,$user,$what,$group) = @_;
11207: my $current_permissions = &get_portfile_permissions($domain,$user);
11208: my @readonly_files;
11209: my $cmp1=$what;
11210: if (ref($what)) { $cmp1=join('',@{$what}) };
11211: while (my ($file_name,$value) = each(%{$current_permissions})) {
11212: if (defined($group)) {
11213: if ($file_name !~ m-^\Q$group\E/-) {
11214: next;
11215: }
11216: }
11217: if (ref($value) eq "ARRAY"){
11218: foreach my $stored_what (@{$value}) {
11219: my $cmp2=$stored_what;
11220: if (ref($stored_what) eq 'ARRAY') {
11221: $cmp2=join('',@{$stored_what});
11222: }
11223: if ($cmp1 eq $cmp2) {
11224: push(@readonly_files, $file_name);
11225: last;
11226: } elsif (!defined($what)) {
11227: push(@readonly_files, $file_name);
11228: last;
11229: }
11230: }
11231: }
11232: }
11233: return @readonly_files;
11234: }
11235: #-----------------------------------------------------------Get Marked as Read Only Hash
11236:
11237: sub get_marked_as_readonly_hash {
11238: my ($current_permissions,$group,$what) = @_;
11239: my %readonly_files;
11240: while (my ($file_name,$value) = each(%{$current_permissions})) {
11241: if (defined($group)) {
11242: if ($file_name !~ m-^\Q$group\E/-) {
11243: next;
11244: }
11245: }
11246: if (ref($value) eq "ARRAY"){
11247: foreach my $stored_what (@{$value}) {
11248: if (ref($stored_what) eq 'ARRAY') {
11249: foreach my $lock_descriptor(@{$stored_what}) {
11250: if ($lock_descriptor eq 'graded') {
11251: $readonly_files{$file_name} = 'graded';
11252: } elsif ($lock_descriptor eq 'handback') {
11253: $readonly_files{$file_name} = 'handback';
11254: } else {
11255: if (!exists($readonly_files{$file_name})) {
11256: $readonly_files{$file_name} = 'locked';
11257: }
11258: }
11259: }
11260: }
11261: }
11262: }
11263: }
11264: return %readonly_files;
11265: }
11266: # ------------------------------------------------------------ Unmark as Read Only
11267:
11268: sub unmark_as_readonly {
11269: # unmarks $file_name (if $file_name is defined), or all files locked by $what
11270: # for portfolio submissions, $what contains [$symb,$crsid]
11271: my ($domain,$user,$what,$file_name,$group) = @_;
11272: $file_name = &declutter_portfile($file_name);
11273: my $symb_crs = $what;
11274: if (ref($what)) { $symb_crs=join('',@$what); }
11275: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
11276: my ($tmp)=keys(%current_permissions);
11277: if ($tmp=~/^error:/) { undef(%current_permissions); }
11278: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
11279: foreach my $file (@readonly_files) {
11280: my $clean_file = &declutter_portfile($file);
11281: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
11282: my $current_locks = $current_permissions{$file};
11283: my @new_locks;
11284: my @del_keys;
11285: if (ref($current_locks) eq "ARRAY"){
11286: foreach my $locker (@{$current_locks}) {
11287: my $compare=$locker;
11288: if (ref($locker) eq 'ARRAY') {
11289: $compare=join('',@{$locker});
11290: if ($compare ne $symb_crs) {
11291: push(@new_locks, $locker);
11292: }
11293: }
11294: }
11295: if (scalar(@new_locks) > 0) {
11296: $current_permissions{$file} = \@new_locks;
11297: } else {
11298: push(@del_keys, $file);
11299: &del('file_permissions',\@del_keys, $domain, $user);
11300: delete($current_permissions{$file});
11301: }
11302: }
11303: }
11304: &put('file_permissions',\%current_permissions,$domain,$user);
11305: return;
11306: }
11307:
11308: # ------------------------------------------------------------ Directory lister
11309:
11310: sub dirlist {
11311: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
11312: $uri=~s/^\///;
11313: $uri=~s/\/$//;
11314: my ($udom, $uname);
11315: if ($getuserdir) {
11316: $udom = $userdomain;
11317: $uname = $username;
11318: } else {
11319: (undef,$udom,$uname)=split(/\//,$uri);
11320: if(defined($userdomain)) {
11321: $udom = $userdomain;
11322: }
11323: if(defined($username)) {
11324: $uname = $username;
11325: }
11326: }
11327: my ($dirRoot,$listing,@listing_results);
11328:
11329: $dirRoot = $perlvar{'lonDocRoot'};
11330: if (defined($getpropath)) {
11331: $dirRoot = &propath($udom,$uname);
11332: $dirRoot =~ s/\/$//;
11333: } elsif (defined($getuserdir)) {
11334: my $subdir=$uname.'__';
11335: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
11336: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
11337: ."/$udom/$subdir/$uname";
11338: } elsif (defined($alternateRoot)) {
11339: $dirRoot = $alternateRoot;
11340: }
11341:
11342: if($udom) {
11343: if($uname) {
11344: my $uhome = &homeserver($uname,$udom);
11345: if ($uhome eq 'no_host') {
11346: return ([],'no_host');
11347: }
11348: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
11349: .$getuserdir.':'.&escape($dirRoot)
11350: .':'.&escape($uname).':'.&escape($udom),$uhome);
11351: if ($listing eq 'unknown_cmd') {
11352: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
11353: } else {
11354: @listing_results = map { &unescape($_); } split(/:/,$listing);
11355: }
11356: if ($listing eq 'unknown_cmd') {
11357: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
11358: @listing_results = split(/:/,$listing);
11359: } else {
11360: @listing_results = map { &unescape($_); } split(/:/,$listing);
11361: }
11362: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
11363: ($listing eq 'rejected') || ($listing eq 'refused') ||
11364: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
11365: return ([],$listing);
11366: } else {
11367: return (\@listing_results);
11368: }
11369: } elsif(!$alternateRoot) {
11370: my (%allusers,%listerror);
11371: my %servers = &get_servers($udom,'library');
11372: foreach my $tryserver (keys(%servers)) {
11373: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
11374: &escape($udom),$tryserver);
11375: if ($listing eq 'unknown_cmd') {
11376: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
11377: $udom, $tryserver);
11378: } else {
11379: @listing_results = map { &unescape($_); } split(/:/,$listing);
11380: }
11381: if ($listing eq 'unknown_cmd') {
11382: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
11383: $udom, $tryserver);
11384: @listing_results = split(/:/,$listing);
11385: } else {
11386: @listing_results =
11387: map { &unescape($_); } split(/:/,$listing);
11388: }
11389: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
11390: ($listing eq 'rejected') || ($listing eq 'refused') ||
11391: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
11392: $listerror{$tryserver} = $listing;
11393: } else {
11394: foreach my $line (@listing_results) {
11395: my ($entry) = split(/&/,$line,2);
11396: $allusers{$entry} = 1;
11397: }
11398: }
11399: }
11400: my @alluserslist=();
11401: foreach my $user (sort(keys(%allusers))) {
11402: push(@alluserslist,$user.'&user');
11403: }
11404:
11405: if (!%listerror) {
11406: # no errors
11407: return (\@alluserslist);
11408: } elsif (scalar(keys(%servers)) == 1) {
11409: # one library server, one error
11410: my ($key) = keys(%listerror);
11411: return (\@alluserslist, $listerror{$key});
11412: } elsif ( grep { $_ eq 'con_lost' } values(%listerror) ) {
11413: # con_lost indicates that we might miss data from at least one
11414: # library server
11415: return (\@alluserslist, 'con_lost');
11416: } else {
11417: # multiple library servers and no con_lost -> data should be
11418: # complete.
11419: return (\@alluserslist);
11420: }
11421:
11422: } else {
11423: return ([],'missing username');
11424: }
11425: } elsif(!defined($getpropath)) {
11426: my $path = $perlvar{'lonDocRoot'}.'/res/';
11427: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
11428: return (\@all_domains);
11429: } else {
11430: return ([],'missing domain');
11431: }
11432: }
11433:
11434: # --------------------------------------------- GetFileTimestamp
11435: # This function utilizes dirlist and returns the date stamp for
11436: # when it was last modified. It will also return an error of -1
11437: # if an error occurs
11438:
11439: sub GetFileTimestamp {
11440: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
11441: $studentDomain = &LONCAPA::clean_domain($studentDomain);
11442: $studentName = &LONCAPA::clean_username($studentName);
11443: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
11444: undef,$getuserdir);
11445: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
11446: return -1;
11447: }
11448: if (ref($fileref) eq 'ARRAY') {
11449: my @stats = split('&',$fileref->[0]);
11450: # @stats contains first the filename, then the stat output
11451: return $stats[10]; # so this is 10 instead of 9.
11452: } else {
11453: return -1;
11454: }
11455: }
11456:
11457: sub stat_file {
11458: my ($uri) = @_;
11459: $uri = &clutter_with_no_wrapper($uri);
11460:
11461: my ($udom,$uname,$file);
11462: if ($uri =~ m-^/(uploaded|editupload)/-) {
11463: ($udom,$uname,$file) =
11464: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
11465: $file = 'userfiles/'.$file;
11466: }
11467: if ($uri =~ m-^/res/-) {
11468: ($udom,$uname) =
11469: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
11470: $file = $uri;
11471: }
11472:
11473: if (!$udom || !$uname || !$file) {
11474: # unable to handle the uri
11475: return ();
11476: }
11477: my $getpropath;
11478: if ($file =~ /^userfiles\//) {
11479: $getpropath = 1;
11480: }
11481: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
11482: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
11483: return ();
11484: } else {
11485: if (ref($listref) eq 'ARRAY') {
11486: my @stats = split('&',$listref->[0]);
11487: shift(@stats); #filename is first
11488: return @stats;
11489: }
11490: }
11491: return ();
11492: }
11493:
11494: # --------------------------------------------------------- recursedirs
11495: # Recursive function to traverse either a specific user's Authoring Space
11496: # or corresponding Published Resource Space, and populate the hash ref:
11497: # $dirhashref with URLs of all directories, and if $filehashref hash
11498: # ref arg is provided, the URLs of any files, excluding versioned, .meta,
11499: # or .rights files in resource space, and .meta, .save, .log, and .bak
11500: # files in Authoring Space.
11501: #
11502: # Inputs:
11503: #
11504: # $is_home - true if current server is home server for user's space
11505: # $context - either: priv, or res respectively for Authoring or Resource Space.
11506: # $docroot - Document root (i.e., /home/httpd/html
11507: # $toppath - Top level directory (i.e., /res/$dom/$uname or /priv/$dom/$uname
11508: # $relpath - Current path (relative to top level).
11509: # $dirhashref - reference to hash to populate with URLs of directories (Required)
11510: # $filehashref - reference to hash to populate with URLs of files (Optional)
11511: #
11512: # Returns: nothing
11513: #
11514: # Side Effects: populates $dirhashref, and $filehashref (if provided).
11515: #
11516: # Currently used by interface/londocs.pm to create linked select boxes for
11517: # directory and filename to import a Course "Author" resource into a course, and
11518: # also to create linked select boxes for Authoring Space and Directory to choose
11519: # save location for creation of a new "standard" problem from the Course Editor.
11520: #
11521:
11522: sub recursedirs {
11523: my ($is_home,$context,$docroot,$toppath,$relpath,$dirhashref,$filehashref) = @_;
11524: return unless (ref($dirhashref) eq 'HASH');
11525: my $currpath = $docroot.$toppath;
11526: if ($relpath) {
11527: $currpath .= "/$relpath";
11528: }
11529: my $savefile;
11530: if (ref($filehashref)) {
11531: $savefile = 1;
11532: }
11533: if ($is_home) {
11534: if (opendir(my $dirh,$currpath)) {
11535: foreach my $item (sort { lc($a) cmp lc($b) } grep(!/^\.+$/,readdir($dirh))) {
11536: next if ($item eq '');
11537: if (-d "$currpath/$item") {
11538: my $newpath;
11539: if ($relpath) {
11540: $newpath = "$relpath/$item";
11541: } else {
11542: $newpath = $item;
11543: }
11544: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
11545: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
11546: } elsif ($savefile) {
11547: if ($context eq 'priv') {
11548: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
11549: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
11550: }
11551: } else {
11552: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/) || ($item =~ /\.rights$/)) {
11553: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
11554: }
11555: }
11556: }
11557: }
11558: closedir($dirh);
11559: }
11560: } else {
11561: my ($dirlistref,$listerror) =
11562: &dirlist($toppath.$relpath);
11563: my @dir_lines;
11564: my $dirptr=16384;
11565: if (ref($dirlistref) eq 'ARRAY') {
11566: foreach my $dir_line (sort
11567: {
11568: my ($afile)=split('&',$a,2);
11569: my ($bfile)=split('&',$b,2);
11570: return (lc($afile) cmp lc($bfile));
11571: } (@{$dirlistref})) {
11572: my ($item,$dom,undef,$testdir,undef,undef,undef,undef,$size,undef,$mtime,undef,undef,undef,$obs,undef) =
11573: split(/\&/,$dir_line,16);
11574: $item =~ s/\s+$//;
11575: next if (($item =~ /^\.\.?$/) || ($obs));
11576: if ($dirptr&$testdir) {
11577: my $newpath;
11578: if ($relpath) {
11579: $newpath = "$relpath/$item";
11580: } else {
11581: $relpath = '/';
11582: $newpath = $item;
11583: }
11584: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
11585: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
11586: } elsif ($savefile) {
11587: if ($context eq 'priv') {
11588: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
11589: $filehashref->{$relpath}{$item} = 1;
11590: }
11591: } else {
11592: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/)) {
11593: $filehashref->{$relpath}{$item} = 1;
11594: }
11595: }
11596: }
11597: }
11598: }
11599: }
11600: return;
11601: }
11602:
11603: # -------------------------------------------------------- Value of a Condition
11604:
11605: # gets the value of a specific preevaluated condition
11606: # stored in the string $env{user.state.<cid>}
11607: # or looks up a condition reference in the bighash and if if hasn't
11608: # already been evaluated recurses into docondval to get the value of
11609: # the condition, then memoizing it to
11610: # $env{user.state.<cid>.<condition>}
11611: sub directcondval {
11612: my $number=shift;
11613: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
11614: &Apache::lonuserstate::evalstate();
11615: }
11616: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
11617: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
11618: } elsif ($number =~ /^_/) {
11619: my $sub_condition;
11620: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11621: &GDBM_READER(),0640)) {
11622: $sub_condition=$bighash{'conditions'.$number};
11623: untie(%bighash);
11624: }
11625: my $value = &docondval($sub_condition);
11626: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
11627: return $value;
11628: }
11629: if ($env{'user.state.'.$env{'request.course.id'}}) {
11630: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
11631: } else {
11632: return 2;
11633: }
11634: }
11635:
11636: # get the collection of conditions for this resource
11637: sub condval {
11638: my $condidx=shift;
11639: my $allpathcond='';
11640: foreach my $cond (split(/\|/,$condidx)) {
11641: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
11642: $allpathcond.=
11643: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
11644: }
11645: }
11646: $allpathcond=~s/\|$//;
11647: return &docondval($allpathcond);
11648: }
11649:
11650: #evaluates an expression of conditions
11651: sub docondval {
11652: my ($allpathcond) = @_;
11653: my $result=0;
11654: if ($env{'request.course.id'}
11655: && defined($allpathcond)) {
11656: my $operand='|';
11657: my @stack;
11658: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
11659: if ($chunk eq '(') {
11660: push @stack,($operand,$result);
11661: } elsif ($chunk eq ')') {
11662: my $before=pop @stack;
11663: if (pop @stack eq '&') {
11664: $result=$result>$before?$before:$result;
11665: } else {
11666: $result=$result>$before?$result:$before;
11667: }
11668: } elsif (($chunk eq '&') || ($chunk eq '|')) {
11669: $operand=$chunk;
11670: } else {
11671: my $new=directcondval($chunk);
11672: if ($operand eq '&') {
11673: $result=$result>$new?$new:$result;
11674: } else {
11675: $result=$result>$new?$result:$new;
11676: }
11677: }
11678: }
11679: }
11680: return $result;
11681: }
11682:
11683: # ---------------------------------------------------- Devalidate courseresdata
11684:
11685: sub devalidatecourseresdata {
11686: my ($coursenum,$coursedomain)=@_;
11687: my $hashid=$coursenum.':'.$coursedomain;
11688: &devalidate_cache_new('courseres',$hashid);
11689: }
11690:
11691:
11692: # --------------------------------------------------- Course Resourcedata Query
11693: #
11694: # Parameters:
11695: # $coursenum - Number of the course.
11696: # $coursedomain - Domain at which the course was created.
11697: # Returns:
11698: # A hash of the course parameters along (I think) with timestamps
11699: # and version info.
11700:
11701: sub get_courseresdata {
11702: my ($coursenum,$coursedomain)=@_;
11703: my $coursehom=&homeserver($coursenum,$coursedomain);
11704: my $hashid=$coursenum.':'.$coursedomain;
11705: my ($result,$cached)=&is_cached_new('courseres',$hashid);
11706: my %dumpreply;
11707: unless (defined($cached)) {
11708: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
11709: $result=\%dumpreply;
11710: my ($tmp) = keys(%dumpreply);
11711: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
11712: &do_cache_new('courseres',$hashid,$result,600);
11713: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
11714: return $tmp;
11715: } elsif ($tmp =~ /^(error)/) {
11716: $result=undef;
11717: &do_cache_new('courseres',$hashid,$result,600);
11718: }
11719: }
11720: return $result;
11721: }
11722:
11723: sub devalidateuserresdata {
11724: my ($uname,$udom)=@_;
11725: my $hashid="$udom:$uname";
11726: &devalidate_cache_new('userres',$hashid);
11727: }
11728:
11729: sub get_userresdata {
11730: my ($uname,$udom)=@_;
11731: #most student don\'t have any data set, check if there is some data
11732: if (&EXT_cache_status($udom,$uname)) { return undef; }
11733:
11734: my $hashid="$udom:$uname";
11735: my ($result,$cached)=&is_cached_new('userres',$hashid);
11736: if (!defined($cached)) {
11737: my %resourcedata=&dump('resourcedata',$udom,$uname);
11738: $result=\%resourcedata;
11739: &do_cache_new('userres',$hashid,$result,600);
11740: }
11741: my ($tmp)=keys(%$result);
11742: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
11743: return $result;
11744: }
11745: #error 2 occurs when the .db doesn't exist
11746: if ($tmp!~/error: 2 /) {
11747: if ((!defined($cached)) || ($tmp ne 'con_lost')) {
11748: &logthis("<font color=\"blue\">WARNING:".
11749: " Trying to get resource data for ".
11750: $uname." at ".$udom.": ".
11751: $tmp."</font>");
11752: }
11753: } elsif ($tmp=~/error: 2 /) {
11754: #&EXT_cache_set($udom,$uname);
11755: &do_cache_new('userres',$hashid,undef,600);
11756: undef($tmp); # not really an error so don't send it back
11757: }
11758: return $tmp;
11759: }
11760: #----------------------------------------------- resdata - return resource data
11761: # Purpose:
11762: # Return resource data for either users or for a course.
11763: # Parameters:
11764: # $name - Course/user name.
11765: # $domain - Name of the domain the user/course is registered on.
11766: # $type - Type of thing $name is (must be 'course' or 'user')
11767: # $mapp - decluttered URL of enclosing map
11768: # $recursed - Ref to scalar -- set to 1, if nested maps have been recursed.
11769: # $recurseup - Ref to array of map URLs, starting with map containing
11770: # $mapp up through hierarchy of nested maps to top level map.
11771: # $courseid - CourseID (first part of param identifier).
11772: # $modifier - Middle part of param identifier.
11773: # $what - Last part of param identifier.
11774: # @which - Array of names of resources desired.
11775: # Returns:
11776: # The value of the first reasource in @which that is found in the
11777: # resource hash.
11778: # Exceptional Conditions:
11779: # If the $type passed in is not valid (not the string 'course' or
11780: # 'user', an undefined reference is returned.
11781: # If none of the resources are found, an undef is returned
11782: sub resdata {
11783: my ($name,$domain,$type,$mapp,$recursed,$recurseup,$courseid,
11784: $modifier,$what,@which)=@_;
11785: my $result;
11786: if ($type eq 'course') {
11787: $result=&get_courseresdata($name,$domain);
11788: } elsif ($type eq 'user') {
11789: $result=&get_userresdata($name,$domain);
11790: }
11791: if (!ref($result)) { return $result; }
11792: foreach my $item (@which) {
11793: if ($item->[1] eq 'course') {
11794: if ((ref($recurseup) eq 'ARRAY') && (ref($recursed) eq 'SCALAR')) {
11795: unless ($$recursed) {
11796: @{$recurseup} = &get_map_hierarchy($mapp,$courseid);
11797: $$recursed = 1;
11798: }
11799: foreach my $item (@${recurseup}) {
11800: my $norecursechk=$courseid.$modifier.$item.'___(all).'.$what;
11801: last if (defined($result->{$norecursechk}));
11802: my $recursechk=$courseid.$modifier.$item.'___(rec).'.$what;
11803: if (defined($result->{$recursechk})) { return [$result->{$recursechk},'map']; }
11804: }
11805: }
11806: }
11807: if (defined($result->{$item->[0]})) {
11808: return [$result->{$item->[0]},$item->[1]];
11809: }
11810: }
11811: return undef;
11812: }
11813:
11814: sub get_domain_lti {
11815: my ($cdom,$context) = @_;
11816: my ($name,%lti);
11817: if ($context eq 'consumer') {
11818: $name = 'ltitools';
11819: } elsif ($context eq 'provider') {
11820: $name = 'lti';
11821: } else {
11822: return %lti;
11823: }
11824: my ($result,$cached)=&is_cached_new($name,$cdom);
11825: if (defined($cached)) {
11826: if (ref($result) eq 'HASH') {
11827: %lti = %{$result};
11828: }
11829: } else {
11830: my %domconfig = &get_dom('configuration',[$name],$cdom);
11831: if (ref($domconfig{$name}) eq 'HASH') {
11832: %lti = %{$domconfig{$name}};
11833: my %encdomconfig = &get_dom('encconfig',[$name],$cdom);
11834: if (ref($encdomconfig{$name}) eq 'HASH') {
11835: foreach my $id (keys(%lti)) {
11836: if (ref($encdomconfig{$name}{$id}) eq 'HASH') {
11837: foreach my $item ('key','secret') {
11838: $lti{$id}{$item} = $encdomconfig{$name}{$id}{$item};
11839: }
11840: }
11841: }
11842: }
11843: }
11844: my $cachetime = 24*60*60;
11845: &do_cache_new($name,$cdom,\%lti,$cachetime);
11846: }
11847: return %lti;
11848: }
11849:
11850: sub get_numsuppfiles {
11851: my ($cnum,$cdom,$ignorecache)=@_;
11852: my $hashid=$cnum.':'.$cdom;
11853: my ($suppcount,$cached);
11854: unless ($ignorecache) {
11855: ($suppcount,$cached) = &is_cached_new('suppcount',$hashid);
11856: }
11857: unless (defined($cached)) {
11858: my $chome=&homeserver($cnum,$cdom);
11859: unless ($chome eq 'no_host') {
11860: ($suppcount,my $supptools,my $errors) = (0,0,0);
11861: my $suppmap = 'supplemental.sequence';
11862: ($suppcount,$supptools,$errors) =
11863: &Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,
11864: $supptools,$errors);
11865: }
11866: &do_cache_new('suppcount',$hashid,$suppcount,600);
11867: }
11868: return $suppcount;
11869: }
11870:
11871: #
11872: # EXT resource caching routines
11873: #
11874:
11875: {
11876: # Cache (5 seconds) of map hierarchy for speedup of navmaps display
11877: #
11878: # The course for which we cache
11879: my $cachedmapkey='';
11880: # The cached recursive maps for this course
11881: my %cachedmaps=();
11882: # When this was last done
11883: my $cachedmaptime='';
11884:
11885: sub clear_EXT_cache_status {
11886: &delenv('cache.EXT.');
11887: }
11888:
11889: sub EXT_cache_status {
11890: my ($target_domain,$target_user) = @_;
11891: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
11892: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
11893: # We know already the user has no data
11894: return 1;
11895: } else {
11896: return 0;
11897: }
11898: }
11899:
11900: sub EXT_cache_set {
11901: my ($target_domain,$target_user) = @_;
11902: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
11903: #&appenv({$cachename => time});
11904: }
11905:
11906: # --------------------------------------------------------- Value of a Variable
11907: sub EXT {
11908:
11909: my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid)=@_;
11910: unless ($varname) { return ''; }
11911: #get real user name/domain, courseid and symb
11912: my $courseid;
11913: my $publicuser;
11914: if ($symbparm) {
11915: $symbparm=&get_symb_from_alias($symbparm);
11916: }
11917: if (!($uname && $udom)) {
11918: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
11919: if (!$symbparm) { $symbparm=$cursymb; }
11920: } else {
11921: $courseid=$env{'request.course.id'};
11922: }
11923: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
11924: my $rest;
11925: if (defined($therest[0])) {
11926: $rest=join('.',@therest);
11927: } else {
11928: $rest='';
11929: }
11930:
11931: my $qualifierrest=$qualifier;
11932: if ($rest) { $qualifierrest.='.'.$rest; }
11933: my $spacequalifierrest=$space;
11934: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
11935: if ($realm eq 'user') {
11936: # --------------------------------------------------------------- user.resource
11937: if ($space eq 'resource') {
11938: if ( (defined($Apache::lonhomework::parsing_a_problem)
11939: || defined($Apache::lonhomework::parsing_a_task))
11940: &&
11941: ($symbparm eq &symbread()) ) {
11942: # if we are in the middle of processing the resource the
11943: # get the value we are planning on committing
11944: if (defined($Apache::lonhomework::results{$qualifierrest})) {
11945: return $Apache::lonhomework::results{$qualifierrest};
11946: } else {
11947: return $Apache::lonhomework::history{$qualifierrest};
11948: }
11949: } else {
11950: my %restored;
11951: if ($publicuser || $env{'request.state'} eq 'construct') {
11952: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
11953: } else {
11954: %restored=&restore($symbparm,$courseid,$udom,$uname);
11955: }
11956: return $restored{$qualifierrest};
11957: }
11958: # ----------------------------------------------------------------- user.access
11959: } elsif ($space eq 'access') {
11960: # FIXME - not supporting calls for a specific user
11961: return &allowed($qualifier,$rest);
11962: # ------------------------------------------ user.preferences, user.environment
11963: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
11964: if (($uname eq $env{'user.name'}) &&
11965: ($udom eq $env{'user.domain'})) {
11966: return $env{join('.',('environment',$qualifierrest))};
11967: } else {
11968: my %returnhash;
11969: if (!$publicuser) {
11970: %returnhash=&userenvironment($udom,$uname,
11971: $qualifierrest);
11972: }
11973: return $returnhash{$qualifierrest};
11974: }
11975: # ----------------------------------------------------------------- user.course
11976: } elsif ($space eq 'course') {
11977: # FIXME - not supporting calls for a specific user
11978: return $env{join('.',('request.course',$qualifier))};
11979: # ------------------------------------------------------------------- user.role
11980: } elsif ($space eq 'role') {
11981: # FIXME - not supporting calls for a specific user
11982: my ($role,$where)=split(/\./,$env{'request.role'});
11983: if ($qualifier eq 'value') {
11984: return $role;
11985: } elsif ($qualifier eq 'extent') {
11986: return $where;
11987: }
11988: # ----------------------------------------------------------------- user.domain
11989: } elsif ($space eq 'domain') {
11990: return $udom;
11991: # ------------------------------------------------------------------- user.name
11992: } elsif ($space eq 'name') {
11993: return $uname;
11994: # ---------------------------------------------------- Any other user namespace
11995: } else {
11996: my %reply;
11997: if (!$publicuser) {
11998: %reply=&get($space,[$qualifierrest],$udom,$uname);
11999: }
12000: return $reply{$qualifierrest};
12001: }
12002: } elsif ($realm eq 'query') {
12003: # ---------------------------------------------- pull stuff out of query string
12004: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
12005: [$spacequalifierrest]);
12006: return $env{'form.'.$spacequalifierrest};
12007: } elsif ($realm eq 'request') {
12008: # ------------------------------------------------------------- request.browser
12009: if ($space eq 'browser') {
12010: return $env{'browser.'.$qualifier};
12011: # ------------------------------------------------------------ request.filename
12012: } else {
12013: return $env{'request.'.$spacequalifierrest};
12014: }
12015: } elsif ($realm eq 'course') {
12016: # ---------------------------------------------------------- course.description
12017: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
12018: } elsif ($realm eq 'resource') {
12019:
12020: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
12021: if (!$symbparm) { $symbparm=&symbread(); }
12022: }
12023:
12024: if ($qualifier eq '') {
12025: if ($space eq 'title') {
12026: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
12027: return &gettitle($symbparm);
12028: }
12029:
12030: if ($space eq 'map') {
12031: my ($map) = &decode_symb($symbparm);
12032: return &symbread($map);
12033: }
12034: if ($space eq 'maptitle') {
12035: my ($map) = &decode_symb($symbparm);
12036: return &gettitle($map);
12037: }
12038: if ($space eq 'filename') {
12039: if ($symbparm) {
12040: return &clutter((&decode_symb($symbparm))[2]);
12041: }
12042: return &hreflocation('',$env{'request.filename'});
12043: }
12044:
12045: if ((defined($courseid)) && ($courseid eq $env{'request.course.id'}) && $symbparm) {
12046: if ($space eq 'visibleparts') {
12047: my $navmap = Apache::lonnavmaps::navmap->new();
12048: my $item;
12049: if (ref($navmap)) {
12050: my $res = $navmap->getBySymb($symbparm);
12051: my $parts = $res->parts();
12052: if (ref($parts) eq 'ARRAY') {
12053: $item = join(',',@{$parts});
12054: }
12055: undef($navmap);
12056: }
12057: return $item;
12058: }
12059: }
12060: }
12061:
12062: my ($section, $group, @groups, @recurseup, $recursed);
12063: my ($courselevelm,$courseleveli,$courselevel,$mapp);
12064: if (($courseid eq '') && ($cid)) {
12065: $courseid = $cid;
12066: }
12067: if (($symbparm && $courseid) &&
12068: (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid))) {
12069:
12070: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
12071:
12072: # ----------------------------------------------------- Cascading lookup scheme
12073: my $symbp=$symbparm;
12074: $mapp=&deversion((&decode_symb($symbp))[0]);
12075: my $symbparm=$symbp.'.'.$spacequalifierrest;
12076: my $recurseparm=$mapp.'___(rec).'.$spacequalifierrest;
12077: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
12078: if (($env{'user.name'} eq $uname) &&
12079: ($env{'user.domain'} eq $udom)) {
12080: $section=$env{'request.course.sec'};
12081: @groups = split(/:/,$env{'request.course.groups'});
12082: @groups=&sort_course_groups($courseid,@groups);
12083: } else {
12084: if (! defined($usection)) {
12085: $section=&getsection($udom,$uname,$courseid);
12086: } else {
12087: $section = $usection;
12088: }
12089: @groups = &get_users_groups($udom,$uname,$courseid);
12090: }
12091:
12092: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
12093: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
12094: my $secleveli=$courseid.'.['.$section.'].'.$recurseparm;
12095: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
12096:
12097: $courselevel=$courseid.'.'.$spacequalifierrest;
12098: my $courselevelr=$courseid.'.'.$symbparm;
12099: $courseleveli=$courseid.'.'.$recurseparm;
12100: $courselevelm=$courseid.'.'.$mapparm;
12101:
12102: # ----------------------------------------------------------- first, check user
12103:
12104: my $userreply=&resdata($uname,$udom,'user',$mapp,\$recursed,
12105: \@recurseup,$courseid,'.',$spacequalifierrest,
12106: ([$courselevelr,'resource'],
12107: [$courselevelm,'map' ],
12108: [$courseleveli,'map' ],
12109: [$courselevel, 'course' ]));
12110: if (defined($userreply)) { return &get_reply($userreply); }
12111:
12112: # ------------------------------------------------ second, check some of course
12113: my $coursereply;
12114: if (@groups > 0) {
12115: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
12116: $recurseparm,$mapparm,$spacequalifierrest,
12117: $mapp,\$recursed,\@recurseup);
12118: if (defined($coursereply)) { return &get_reply($coursereply); }
12119: }
12120:
12121: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
12122: $env{'course.'.$courseid.'.domain'},
12123: 'course',$mapp,\$recursed,\@recurseup,
12124: $courseid,'.['.$section.'].',$spacequalifierrest,
12125: ([$seclevelr, 'resource'],
12126: [$seclevelm, 'map' ],
12127: [$secleveli, 'map' ],
12128: [$seclevel, 'course' ],
12129: [$courselevelr,'resource']));
12130: if (defined($coursereply)) { return &get_reply($coursereply); }
12131:
12132: # ------------------------------------------------------ third, check map parms
12133: my %parmhash=();
12134: my $thisparm='';
12135: if (tie(%parmhash,'GDBM_File',
12136: $env{'request.course.fn'}.'_parms.db',
12137: &GDBM_READER(),0640)) {
12138: $thisparm=$parmhash{$symbparm};
12139: untie(%parmhash);
12140: }
12141: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
12142: }
12143: # ------------------------------------------ fourth, look in resource metadata
12144:
12145: my $what = $spacequalifierrest;
12146: $what=~s/\./\_/;
12147: my $filename;
12148: if (!$symbparm) { $symbparm=&symbread(); }
12149: if ($symbparm) {
12150: $filename=(&decode_symb($symbparm))[2];
12151: } else {
12152: $filename=$env{'request.filename'};
12153: }
12154: my $toolsymb;
12155: if (($filename =~ /ext\.tool$/) && ($what ne '0_gradable')) {
12156: $toolsymb = $symbparm;
12157: }
12158: my $metadata=&metadata($filename,$what,$toolsymb);
12159: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
12160: $metadata=&metadata($filename,'parameter_'.$what,$toolsymb);
12161: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
12162:
12163: # ----------------------------------------------- fifth, look in rest of course
12164: if ($symbparm && defined($courseid) &&
12165: $courseid eq $env{'request.course.id'}) {
12166: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
12167: $env{'course.'.$courseid.'.domain'},
12168: 'course',$mapp,\$recursed,\@recurseup,
12169: $courseid,'.',$spacequalifierrest,
12170: ([$courselevelm,'map' ],
12171: [$courseleveli,'map' ],
12172: [$courselevel, 'course']));
12173: if (defined($coursereply)) { return &get_reply($coursereply); }
12174: }
12175: # ------------------------------------------------------------------ Cascade up
12176: unless ($space eq '0') {
12177: my @parts=split(/_/,$space);
12178: my $id=pop(@parts);
12179: my $part=join('_',@parts);
12180: if ($part eq '') { $part='0'; }
12181: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
12182: $symbparm,$udom,$uname,$section,1);
12183: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
12184: }
12185: if ($recurse) { return undef; }
12186: my $pack_def=&packages_tab_default($filename,$varname,$toolsymb);
12187: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
12188: # ---------------------------------------------------- Any other user namespace
12189: } elsif ($realm eq 'environment') {
12190: # ----------------------------------------------------------------- environment
12191: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
12192: return $env{'environment.'.$spacequalifierrest};
12193: } else {
12194: if ($uname eq 'anonymous' && $udom eq '') {
12195: return '';
12196: }
12197: my %returnhash=&userenvironment($udom,$uname,
12198: $spacequalifierrest);
12199: return $returnhash{$spacequalifierrest};
12200: }
12201: } elsif ($realm eq 'system') {
12202: # ----------------------------------------------------------------- system.time
12203: if ($space eq 'time') {
12204: return time;
12205: }
12206: } elsif ($realm eq 'server') {
12207: # ----------------------------------------------------------------- system.time
12208: if ($space eq 'name') {
12209: return $ENV{'SERVER_NAME'};
12210: }
12211: }
12212: return '';
12213: }
12214:
12215: sub get_reply {
12216: my ($reply_value) = @_;
12217: if (ref($reply_value) eq 'ARRAY') {
12218: if (wantarray) {
12219: return @$reply_value;
12220: }
12221: return $reply_value->[0];
12222: } else {
12223: return $reply_value;
12224: }
12225: }
12226:
12227: sub check_group_parms {
12228: my ($courseid,$groups,$symbparm,$recurseparm,$mapparm,$what,$mapp,
12229: $recursed,$recurseupref) = @_;
12230: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$recurseparm,'map'],
12231: [$what,'course']);
12232: my $coursereply;
12233: foreach my $group (@{$groups}) {
12234: my @groupitems = ();
12235: foreach my $level (@levels) {
12236: my $item = $courseid.'.['.$group.'].'.$level->[0];
12237: push(@groupitems,[$item,$level->[1]]);
12238: }
12239: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
12240: $env{'course.'.$courseid.'.domain'},
12241: 'course',$mapp,$recursed,$recurseupref,
12242: $courseid,'.['.$group.'].',$what,
12243: @groupitems);
12244: last if (defined($coursereply));
12245: }
12246: return $coursereply;
12247: }
12248:
12249: sub get_map_hierarchy {
12250: my ($mapname,$courseid) = @_;
12251: my @recurseup = ();
12252: if ($mapname) {
12253: if (($cachedmapkey eq $courseid) &&
12254: (abs($cachedmaptime-time)<5)) {
12255: if (ref($cachedmaps{$mapname}) eq 'ARRAY') {
12256: return @{$cachedmaps{$mapname}};
12257: }
12258: }
12259: my $navmap = Apache::lonnavmaps::navmap->new();
12260: if (ref($navmap)) {
12261: @recurseup = $navmap->recurseup_maps($mapname);
12262: undef($navmap);
12263: $cachedmaps{$mapname} = \@recurseup;
12264: $cachedmaptime=time;
12265: $cachedmapkey=$courseid;
12266: }
12267: }
12268: return @recurseup;
12269: }
12270:
12271: }
12272:
12273: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
12274: my ($courseid,@groups) = @_;
12275: @groups = sort(@groups);
12276: return @groups;
12277: }
12278:
12279: sub packages_tab_default {
12280: my ($uri,$varname,$toolsymb)=@_;
12281: my (undef,$part,$name)=split(/\./,$varname);
12282:
12283: my (@extension,@specifics,$do_default);
12284: foreach my $package (split(/,/,&metadata($uri,'packages',$toolsymb))) {
12285: my ($pack_type,$pack_part)=split(/_/,$package,2);
12286: if ($pack_type eq 'default') {
12287: $do_default=1;
12288: } elsif ($pack_type eq 'extension') {
12289: push(@extension,[$package,$pack_type,$pack_part]);
12290: } elsif ($pack_part eq $part || $pack_type eq 'part') {
12291: # only look at packages defaults for packages that this id is
12292: push(@specifics,[$package,$pack_type,$pack_part]);
12293: }
12294: }
12295: # first look for a package that matches the requested part id
12296: foreach my $package (@specifics) {
12297: my (undef,$pack_type,$pack_part)=@{$package};
12298: next if ($pack_part ne $part);
12299: if (defined($packagetab{"$pack_type&$name&default"})) {
12300: return $packagetab{"$pack_type&$name&default"};
12301: }
12302: }
12303: # look for any possible matching non extension_ package
12304: foreach my $package (@specifics) {
12305: my (undef,$pack_type,$pack_part)=@{$package};
12306: if (defined($packagetab{"$pack_type&$name&default"})) {
12307: return $packagetab{"$pack_type&$name&default"};
12308: }
12309: if ($pack_type eq 'part') { $pack_part='0'; }
12310: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
12311: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
12312: }
12313: }
12314: # look for any posible extension_ match
12315: foreach my $package (@extension) {
12316: my ($package,$pack_type)=@{$package};
12317: if (defined($packagetab{"$pack_type&$name&default"})) {
12318: return $packagetab{"$pack_type&$name&default"};
12319: }
12320: if (defined($packagetab{$package."&$name&default"})) {
12321: return $packagetab{$package."&$name&default"};
12322: }
12323: }
12324: # look for a global default setting
12325: if ($do_default && defined($packagetab{"default&$name&default"})) {
12326: return $packagetab{"default&$name&default"};
12327: }
12328: return undef;
12329: }
12330:
12331: sub add_prefix_and_part {
12332: my ($prefix,$part)=@_;
12333: my $keyroot;
12334: if (defined($prefix) && $prefix !~ /^__/) {
12335: # prefix that has a part already
12336: $keyroot=$prefix;
12337: } elsif (defined($prefix)) {
12338: # prefix that is missing a part
12339: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
12340: } else {
12341: # no prefix at all
12342: if (defined($part)) { $keyroot='_'.$part; }
12343: }
12344: return $keyroot;
12345: }
12346:
12347: # ---------------------------------------------------------------- Get metadata
12348:
12349: my %metaentry;
12350: my %importedpartids;
12351: my %importedrespids;
12352: sub metadata {
12353: my ($uri,$what,$toolsymb,$liburi,$prefix,$depthcount)=@_;
12354: $uri=&declutter($uri);
12355: # if it is a non metadata possible uri return quickly
12356: if (($uri eq '') ||
12357: (($uri =~ m|^/*adm/|) &&
12358: ($uri !~ m|^adm/includes|) && ($uri !~ m{/(smppg|bulletinboard|ext\.tool)$})) ||
12359: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
12360: return undef;
12361: }
12362: if (($uri =~ /^priv/ || $uri=~m{^home/httpd/html/priv})
12363: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
12364: return undef;
12365: }
12366: my $filename=$uri;
12367: $uri=~s/\.meta$//;
12368: #
12369: # Is the metadata already cached?
12370: # Look at timestamp of caching
12371: # Everything is cached by the main uri, libraries are never directly cached
12372: #
12373: if (!defined($liburi)) {
12374: my ($result,$cached)=&is_cached_new('meta',$uri);
12375: if (defined($cached)) { return $result->{':'.$what}; }
12376: }
12377:
12378: #
12379: # If the uri is for an external tool the file from
12380: # which metadata should be retrieved depends on whether
12381: # the tool had been configured to be gradable (set in the Course
12382: # Editor or Resource Editor).
12383: #
12384: # If a valid symb has been included as the third arg in the call
12385: # to &metadata() that can be used to retrieve the value of
12386: # parameter_0_gradable set for the resource, and included in the
12387: # uploaded map containing the tool. The value is retrieved via
12388: # &EXT(), if a valid symb is available. Otherwise the value of
12389: # gradable in the exttool_$marker.db file for the tool instance
12390: # is retrieved via &get().
12391: #
12392: # When lonuserstate::traceroute() calls lonnet::EXT() for
12393: # hiddenresource and encrypturl (during course initialization)
12394: # the map-level parameter for resource.0.gradable included in the
12395: # uploaded map containing the tool will not yet have been stored
12396: # in the user_course_parms.db file for the user's session, so in
12397: # this case fall back to retrieving gradable status from the
12398: # exttool_$marker.db file.
12399: #
12400: # In order to avoid an infinite loop, &metadata() will return
12401: # before a call to &EXT(), if the uri is for an external tool
12402: # and the $what for which metadata is being requested is
12403: # parameter_0_gradable or 0_gradable.
12404: #
12405:
12406: if ($uri =~ /ext\.tool$/) {
12407: if (($what eq 'parameter_0_gradable') || ($what eq '0_gradable')) {
12408: return;
12409: } else {
12410: my ($checked,$use_passback);
12411: if ($toolsymb ne '') {
12412: (undef,undef,my $tooluri) = &decode_symb($toolsymb);
12413: if (($tooluri eq $uri) && (&EXT('resource.0.gradable',$toolsymb))) {
12414: $checked = 1;
12415: if (&EXT('resource.0.gradable',$toolsymb) =~ /^yes$/i) {
12416: $use_passback = 1;
12417: }
12418: }
12419: }
12420: unless ($checked) {
12421: my ($ignore,$cdom,$cnum,$marker) = split(m{/},$uri);
12422: $marker=~s/\D//g;
12423: if ($marker) {
12424: my %toolsettings=&get('exttool_'.$marker,['gradable'],$cdom,$cnum);
12425: $use_passback = $toolsettings{'gradable'};
12426: }
12427: }
12428: if ($use_passback) {
12429: $filename = '/home/httpd/html/res/lib/templates/LTIpassback.tool';
12430: } else {
12431: $filename = '/home/httpd/html/res/lib/templates/LTIstandard.tool';
12432: }
12433: }
12434: }
12435:
12436: {
12437: # Imported parts would go here
12438: my @origfiletagids=();
12439: my $importedparts=0;
12440:
12441: # Imported responseids would go here
12442: my $importedresponses=0;
12443: #
12444: # Is this a recursive call for a library?
12445: #
12446: # if (! exists($metacache{$uri})) {
12447: # $metacache{$uri}={};
12448: # }
12449: my $cachetime = 60*60;
12450: if ($liburi) {
12451: $liburi=&declutter($liburi);
12452: $filename=$liburi;
12453: } else {
12454: &devalidate_cache_new('meta',$uri);
12455: undef(%metaentry);
12456: }
12457: my %metathesekeys=();
12458: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
12459: my $metastring;
12460: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
12461: my $which = &hreflocation('','/'.($liburi || $uri));
12462: $metastring =
12463: &Apache::lonnet::ssi_body($which,
12464: ('grade_target' => 'meta'));
12465: $cachetime = 1; # only want this cached in the child not long term
12466: } elsif (($uri !~ m -^(editupload)/-) &&
12467: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
12468: my $file=&filelocation('',&clutter($filename));
12469: #push(@{$metaentry{$uri.'.file'}},$file);
12470: $metastring=&getfile($file);
12471: }
12472: my $parser=HTML::LCParser->new(\$metastring);
12473: my $token;
12474: undef %metathesekeys;
12475: while ($token=$parser->get_token) {
12476: if ($token->[0] eq 'S') {
12477: if (defined($token->[2]->{'package'})) {
12478: #
12479: # This is a package - get package info
12480: #
12481: my $package=$token->[2]->{'package'};
12482: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
12483: if (defined($token->[2]->{'id'})) {
12484: $keyroot.='_'.$token->[2]->{'id'};
12485: }
12486: if ($metaentry{':packages'}) {
12487: $metaentry{':packages'}.=','.$package.$keyroot;
12488: } else {
12489: $metaentry{':packages'}=$package.$keyroot;
12490: }
12491: foreach my $pack_entry (keys(%packagetab)) {
12492: my $part=$keyroot;
12493: $part=~s/^\_//;
12494: if ($pack_entry=~/^\Q$package\E\&/ ||
12495: $pack_entry=~/^\Q$package\E_0\&/) {
12496: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
12497: # ignore package.tab specified default values
12498: # here &package_tab_default() will fetch those
12499: if ($subp eq 'default') { next; }
12500: my $value=$packagetab{$pack_entry};
12501: my $unikey;
12502: if ($pack =~ /_0$/) {
12503: $unikey='parameter_0_'.$name;
12504: $part=0;
12505: } else {
12506: $unikey='parameter'.$keyroot.'_'.$name;
12507: }
12508: if ($subp eq 'display') {
12509: $value.=' [Part: '.$part.']';
12510: }
12511: $metaentry{':'.$unikey.'.part'}=$part;
12512: $metathesekeys{$unikey}=1;
12513: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
12514: $metaentry{':'.$unikey.'.'.$subp}=$value;
12515: }
12516: if (defined($metaentry{':'.$unikey.'.default'})) {
12517: $metaentry{':'.$unikey}=
12518: $metaentry{':'.$unikey.'.default'};
12519: }
12520: }
12521: }
12522: } else {
12523: #
12524: # This is not a package - some other kind of start tag
12525: #
12526: my $entry=$token->[1];
12527: my $unikey='';
12528:
12529: if ($entry eq 'import') {
12530: #
12531: # Importing a library here
12532: #
12533: my $location=$parser->get_text('/import');
12534: my $dir=$filename;
12535: $dir=~s|[^/]*$||;
12536: $location=&filelocation($dir,$location);
12537:
12538: my $importid=$token->[2]->{'id'};
12539: my $importmode=$token->[2]->{'importmode'};
12540: #
12541: # Check metadata for imported file to
12542: # see if it contained response items
12543: #
12544: my ($origfile,@libfilekeys);
12545: my %currmetaentry = %metaentry;
12546: @libfilekeys = split(/,/,&metadata($location,'keys',undef,undef,undef,
12547: $depthcount+1));
12548: if (grep(/^responseorder$/,@libfilekeys)) {
12549: my $libresponseorder = &metadata($location,'responseorder',undef,undef,
12550: undef,$depthcount+1);
12551: if ($libresponseorder ne '') {
12552: if ($#origfiletagids<0) {
12553: undef(%importedrespids);
12554: undef(%importedpartids);
12555: }
12556: my @respids = split(/\s*,\s*/,$libresponseorder);
12557: if (@respids) {
12558: $importedrespids{$importid} = join(',',map { $importid.'_'.$_ } @respids);
12559: }
12560: if ($importedrespids{$importid} ne '') {
12561: $importedresponses = 1;
12562: # We need to get the original file and the imported file to get the response order correct
12563: # Load and inspect original file
12564: if ($#origfiletagids<0) {
12565: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
12566: $origfile=&getfile($origfilelocation);
12567: @origfiletagids=($origfile=~/<((?:\w+)response|import|part)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12568: }
12569: }
12570: }
12571: }
12572: # Do not overwrite contents of %metaentry hash for resource itself with
12573: # hash populated for imported library file
12574: %metaentry = %currmetaentry;
12575: undef(%currmetaentry);
12576: if ($importmode eq 'part') {
12577: # Import as part(s)
12578: $importedparts=1;
12579: # We need to get the original file and the imported file to get the part order correct
12580: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
12581: # Load and inspect original file if we didn't do that already
12582: if ($#origfiletagids<0) {
12583: undef(%importedrespids);
12584: undef(%importedpartids);
12585: if ($origfile eq '') {
12586: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
12587: $origfile=&getfile($origfilelocation);
12588: @origfiletagids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12589: }
12590: }
12591: my @impfilepartids;
12592: # If <partorder> tag is included in metadata for the imported file
12593: # get the parts in the imported file from that.
12594: if (grep(/^partorder$/,@libfilekeys)) {
12595: %currmetaentry = %metaentry;
12596: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
12597: $depthcount+1);
12598: %metaentry = %currmetaentry;
12599: undef(%currmetaentry);
12600: if ($libpartorder ne '') {
12601: @impfilepartids=split(/\s*,\s*/,$libpartorder);
12602: }
12603: } else {
12604: # If no <partorder> tag available, load and inspect imported file
12605: my $impfile=&getfile($location);
12606: @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12607: }
12608: if ($#impfilepartids>=0) {
12609: # This problem had parts
12610: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
12611: } else {
12612: # Importing by turning a single problem into a problem part
12613: # It gets the import-tags ID as part-ID
12614: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
12615: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
12616: }
12617: } else {
12618: # Import as problem or as normal import
12619: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
12620: unless ($importmode eq 'problem') {
12621: # Normal import
12622: if (defined($token->[2]->{'id'})) {
12623: $unikey.='_'.$token->[2]->{'id'};
12624: }
12625: }
12626: # Check metadata for imported file to
12627: # see if it contained parts
12628: if (grep(/^partorder$/,@libfilekeys)) {
12629: %currmetaentry = %metaentry;
12630: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
12631: $depthcount+1);
12632: %metaentry = %currmetaentry;
12633: undef(%currmetaentry);
12634: if ($libpartorder ne '') {
12635: $importedparts = 1;
12636: $importedpartids{$token->[2]->{'id'}}=$libpartorder;
12637: }
12638: }
12639: }
12640: if ($depthcount<20) {
12641: my $metadata =
12642: &metadata($uri,'keys',$toolsymb,$location,$unikey,
12643: $depthcount+1);
12644: foreach my $meta (split(',',$metadata)) {
12645: $metaentry{':'.$meta}=$metaentry{':'.$meta};
12646: $metathesekeys{$meta}=1;
12647: }
12648: }
12649: } else {
12650: #
12651: # Not importing, some other kind of non-package, non-library start tag
12652: #
12653: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
12654: if (defined($token->[2]->{'id'})) {
12655: $unikey.='_'.$token->[2]->{'id'};
12656: }
12657: if (defined($token->[2]->{'name'})) {
12658: $unikey.='_'.$token->[2]->{'name'};
12659: }
12660: $metathesekeys{$unikey}=1;
12661: foreach my $param (@{$token->[3]}) {
12662: $metaentry{':'.$unikey.'.'.$param} =
12663: $token->[2]->{$param};
12664: }
12665: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
12666: my $default=$metaentry{':'.$unikey.'.default'};
12667: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
12668: # only ws inside the tag, and not in default, so use default
12669: # as value
12670: $metaentry{':'.$unikey}=$default;
12671: } elsif ( $internaltext =~ /\S/ ) {
12672: # something interesting inside the tag
12673: $metaentry{':'.$unikey}=$internaltext;
12674: } else {
12675: # no interesting values, don't set a default
12676: }
12677: # end of not-a-package not-a-library import
12678: }
12679: # end of not-a-package start tag
12680: }
12681: # the next is the end of "start tag"
12682: }
12683: }
12684: my ($extension) = ($uri =~ /\.(\w+)$/);
12685: $extension = lc($extension);
12686: if ($extension eq 'htm') { $extension='html'; }
12687:
12688: foreach my $key (keys(%packagetab)) {
12689: #no specific packages #how's our extension
12690: if ($key!~/^extension_\Q$extension\E&/) { next; }
12691: &metadata_create_package_def($uri,$key,'extension_'.$extension,
12692: \%metathesekeys);
12693: }
12694:
12695: if (!exists($metaentry{':packages'})
12696: || $packagetab{"import_defaults&extension_$extension"}) {
12697: foreach my $key (keys(%packagetab)) {
12698: #no specific packages well let's get default then
12699: if ($key!~/^default&/) { next; }
12700: &metadata_create_package_def($uri,$key,'default',
12701: \%metathesekeys);
12702: }
12703: }
12704: # are there custom rights to evaluate
12705: if ($metaentry{':copyright'} eq 'custom') {
12706:
12707: #
12708: # Importing a rights file here
12709: #
12710: unless ($depthcount) {
12711: my $location=$metaentry{':customdistributionfile'};
12712: my $dir=$filename;
12713: $dir=~s|[^/]*$||;
12714: $location=&filelocation($dir,$location);
12715: my $rights_metadata =
12716: &metadata($uri,'keys',$toolsymb,$location,'_rights',
12717: $depthcount+1);
12718: foreach my $rights (split(',',$rights_metadata)) {
12719: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
12720: $metathesekeys{$rights}=1;
12721: }
12722: }
12723: }
12724: # uniqifiy package listing
12725: my %seen;
12726: my @uniq_packages =
12727: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
12728: $metaentry{':packages'} = join(',',@uniq_packages);
12729:
12730: if (($importedresponses) || ($importedparts)) {
12731: if ($importedparts) {
12732: # We had imported parts and need to rebuild partorder
12733: $metaentry{':partorder'}='';
12734: $metathesekeys{'partorder'}=1;
12735: }
12736: if ($importedresponses) {
12737: # We had imported responses and need to rebuil responseorder
12738: $metaentry{':responseorder'}='';
12739: $metathesekeys{'responseorder'}=1;
12740: }
12741: for (my $index=0;$index<$#origfiletagids;$index+=2) {
12742: my $origid = $origfiletagids[$index+1];
12743: if ($origfiletagids[$index] eq 'part') {
12744: # Original part, part of the problem
12745: if ($importedparts) {
12746: $metaentry{':partorder'}.=','.$origid;
12747: }
12748: } elsif ($origfiletagids[$index] eq 'import') {
12749: if ($importedparts) {
12750: # We have imported parts at this position
12751: if ($importedpartids{$origid} ne '') {
12752: $metaentry{':partorder'}.=','.$importedpartids{$origid};
12753: }
12754: }
12755: if ($importedresponses) {
12756: # We have imported responses at this position
12757: if ($importedrespids{$origid} ne '') {
12758: $metaentry{':responseorder'}.=','.$importedrespids{$origid};
12759: }
12760: }
12761: } else {
12762: # Original response item, part of the problem
12763: if ($importedresponses) {
12764: $metaentry{':responseorder'}.=','.$origid;
12765: }
12766: }
12767: }
12768: if ($importedparts) {
12769: $metaentry{':partorder'}=~s/^\,//;
12770: }
12771: if ($importedresponses) {
12772: $metaentry{':responseorder'}=~s/^\,//;
12773: }
12774: }
12775: $metaentry{':keys'} = join(',',keys(%metathesekeys));
12776: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
12777: $metaentry{':allpossiblekeys'}=join(',',keys(%metathesekeys));
12778: unless ($liburi) {
12779: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
12780: }
12781: # this is the end of "was not already recently cached
12782: }
12783: return $metaentry{':'.$what};
12784: }
12785:
12786: sub metadata_create_package_def {
12787: my ($uri,$key,$package,$metathesekeys)=@_;
12788: my ($pack,$name,$subp)=split(/\&/,$key);
12789: if ($subp eq 'default') { next; }
12790:
12791: if (defined($metaentry{':packages'})) {
12792: $metaentry{':packages'}.=','.$package;
12793: } else {
12794: $metaentry{':packages'}=$package;
12795: }
12796: my $value=$packagetab{$key};
12797: my $unikey;
12798: $unikey='parameter_0_'.$name;
12799: $metaentry{':'.$unikey.'.part'}=0;
12800: $$metathesekeys{$unikey}=1;
12801: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
12802: $metaentry{':'.$unikey.'.'.$subp}=$value;
12803: }
12804: if (defined($metaentry{':'.$unikey.'.default'})) {
12805: $metaentry{':'.$unikey}=
12806: $metaentry{':'.$unikey.'.default'};
12807: }
12808: }
12809:
12810: sub metadata_generate_part0 {
12811: my ($metadata,$metacache,$uri) = @_;
12812: my %allnames;
12813: foreach my $metakey (keys(%$metadata)) {
12814: if ($metakey=~/^parameter\_(.*)/) {
12815: my $part=$$metacache{':'.$metakey.'.part'};
12816: my $name=$$metacache{':'.$metakey.'.name'};
12817: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
12818: $allnames{$name}=$part;
12819: }
12820: }
12821: }
12822: foreach my $name (keys(%allnames)) {
12823: $$metadata{"parameter_0_$name"}=1;
12824: my $key=":parameter_0_$name";
12825: $$metacache{"$key.part"}='0';
12826: $$metacache{"$key.name"}=$name;
12827: $$metacache{"$key.type"}=$$metacache{':parameter_'.
12828: $allnames{$name}.'_'.$name.
12829: '.type'};
12830: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
12831: '.display'};
12832: my $expr='[Part: '.$allnames{$name}.']';
12833: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
12834: $$metacache{"$key.display"}=$olddis;
12835: }
12836: }
12837:
12838: # ------------------------------------------------------ Devalidate title cache
12839:
12840: sub devalidate_title_cache {
12841: my ($url)=@_;
12842: if (!$env{'request.course.id'}) { return; }
12843: my $symb=&symbread($url);
12844: if (!$symb) { return; }
12845: my $key=$env{'request.course.id'}."\0".$symb;
12846: &devalidate_cache_new('title',$key);
12847: }
12848:
12849: # ------------------------------------------------- Get the title of a course
12850:
12851: sub current_course_title {
12852: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
12853: }
12854: # ------------------------------------------------- Get the title of a resource
12855:
12856: sub gettitle {
12857: my $urlsymb=shift;
12858: my $symb=&symbread($urlsymb);
12859: if ($symb) {
12860: my $key=$env{'request.course.id'}."\0".$symb;
12861: my ($result,$cached)=&is_cached_new('title',$key);
12862: if (defined($cached)) {
12863: return $result;
12864: }
12865: my ($map,$resid,$url)=&decode_symb($symb);
12866: my $title='';
12867: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
12868: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
12869: } else {
12870: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12871: &GDBM_READER(),0640)) {
12872: my $mapid=$bighash{'map_pc_'.&clutter($map)};
12873: $title=$bighash{'title_'.$mapid.'.'.$resid};
12874: untie(%bighash);
12875: }
12876: }
12877: $title=~s/\&colon\;/\:/gs;
12878: if ($title) {
12879: # Remember both $symb and $title for dynamic metadata
12880: $accesshash{$symb.'___crstitle'}=$title;
12881: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
12882: # Cache this title and then return it
12883: return &do_cache_new('title',$key,$title,600);
12884: }
12885: $urlsymb=$url;
12886: }
12887: my $title=&metadata($urlsymb,'title');
12888: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
12889: return $title;
12890: }
12891:
12892: sub get_slot {
12893: my ($which,$cnum,$cdom)=@_;
12894: if (!$cnum || !$cdom) {
12895: (undef,my $courseid)=&whichuser();
12896: $cdom=$env{'course.'.$courseid.'.domain'};
12897: $cnum=$env{'course.'.$courseid.'.num'};
12898: }
12899: my $key=join("\0",'slots',$cdom,$cnum,$which);
12900: my %slotinfo;
12901: if (exists($remembered{$key})) {
12902: $slotinfo{$which} = $remembered{$key};
12903: } else {
12904: %slotinfo=&get('slots',[$which],$cdom,$cnum);
12905: &Apache::lonhomework::showhash(%slotinfo);
12906: my ($tmp)=keys(%slotinfo);
12907: if ($tmp=~/^error:/) { return (); }
12908: $remembered{$key} = $slotinfo{$which};
12909: }
12910: if (ref($slotinfo{$which}) eq 'HASH') {
12911: return %{$slotinfo{$which}};
12912: }
12913: return $slotinfo{$which};
12914: }
12915:
12916: sub get_reservable_slots {
12917: my ($cnum,$cdom,$uname,$udom) = @_;
12918: my $now = time;
12919: my $reservable_info;
12920: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
12921: if (exists($remembered{$key})) {
12922: $reservable_info = $remembered{$key};
12923: } else {
12924: my %resv;
12925: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
12926: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
12927: $reservable_info = \%resv;
12928: $remembered{$key} = $reservable_info;
12929: }
12930: return $reservable_info;
12931: }
12932:
12933: sub get_course_slots {
12934: my ($cnum,$cdom) = @_;
12935: my $hashid=$cnum.':'.$cdom;
12936: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
12937: if (defined($cached)) {
12938: if (ref($result) eq 'HASH') {
12939: return %{$result};
12940: }
12941: } else {
12942: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
12943: my ($tmp) = keys(%slots);
12944: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
12945: &do_cache_new('allslots',$hashid,\%slots,600);
12946: return %slots;
12947: }
12948: }
12949: return;
12950: }
12951:
12952: sub devalidate_slots_cache {
12953: my ($cnum,$cdom)=@_;
12954: my $hashid=$cnum.':'.$cdom;
12955: &devalidate_cache_new('allslots',$hashid);
12956: }
12957:
12958: sub get_coursechange {
12959: my ($cdom,$cnum) = @_;
12960: if ($cdom eq '' || $cnum eq '') {
12961: return unless ($env{'request.course.id'});
12962: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
12963: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
12964: }
12965: my $hashid=$cdom.'_'.$cnum;
12966: my ($change,$cached)=&is_cached_new('crschange',$hashid);
12967: if ((defined($cached)) && ($change ne '')) {
12968: return $change;
12969: } else {
12970: my %crshash;
12971: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
12972: if ($crshash{'internal.contentchange'} eq '') {
12973: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
12974: if ($change eq '') {
12975: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
12976: $change = $crshash{'internal.created'};
12977: }
12978: } else {
12979: $change = $crshash{'internal.contentchange'};
12980: }
12981: my $cachetime = 600;
12982: &do_cache_new('crschange',$hashid,$change,$cachetime);
12983: }
12984: return $change;
12985: }
12986:
12987: sub devalidate_coursechange_cache {
12988: my ($cnum,$cdom)=@_;
12989: my $hashid=$cnum.':'.$cdom;
12990: &devalidate_cache_new('crschange',$hashid);
12991: }
12992:
12993: # ------------------------------------------------- Update symbolic store links
12994:
12995: sub symblist {
12996: my ($mapname,%newhash)=@_;
12997: $mapname=&deversion(&declutter($mapname));
12998: my %hash;
12999: if (($env{'request.course.fn'}) && (%newhash)) {
13000: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
13001: &GDBM_WRCREAT(),0640)) {
13002: foreach my $url (keys(%newhash)) {
13003: next if ($url eq 'last_known'
13004: && $env{'form.no_update_last_known'});
13005: $hash{declutter($url)}=&encode_symb($mapname,
13006: $newhash{$url}->[1],
13007: $newhash{$url}->[0]);
13008: }
13009: if (untie(%hash)) {
13010: return 'ok';
13011: }
13012: }
13013: }
13014: return 'error';
13015: }
13016:
13017: # --------------------------------------------------------------- Verify a symb
13018:
13019: sub symbverify {
13020: my ($symb,$thisurl,$encstate)=@_;
13021: my $thisfn=$thisurl;
13022: $thisfn=&declutter($thisfn);
13023: # direct jump to resource in page or to a sequence - will construct own symbs
13024: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
13025: # check URL part
13026: my ($map,$resid,$url)=&decode_symb($symb);
13027:
13028: unless ($url eq $thisfn) { return 0; }
13029:
13030: $symb=&symbclean($symb);
13031: $thisurl=&deversion($thisurl);
13032: $thisfn=&deversion($thisfn);
13033:
13034: my %bighash;
13035: my $okay=0;
13036:
13037: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
13038: &GDBM_READER(),0640)) {
13039: my $noclutter;
13040: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
13041: $thisurl =~ s/\?.+$//;
13042: if ($map =~ m{^uploaded/.+\.page$}) {
13043: $thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
13044: $thisurl =~ s{^\Qhttp://https://\E}{https://};
13045: $noclutter = 1;
13046: }
13047: }
13048: my $ids;
13049: if ($noclutter) {
13050: $ids=$bighash{'ids_'.$thisurl};
13051: } else {
13052: $ids=$bighash{'ids_'.&clutter($thisurl)};
13053: }
13054: unless ($ids) {
13055: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
13056: $ids=$bighash{$idkey};
13057: }
13058: if ($ids) {
13059: # ------------------------------------------------------------------- Has ID(s)
13060: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
13061: $symb =~ s/\?.+$//;
13062: }
13063: foreach my $id (split(/\,/,$ids)) {
13064: my ($mapid,$resid)=split(/\./,$id);
13065: if (
13066: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
13067: eq $symb) {
13068: if (ref($encstate)) {
13069: $$encstate = $bighash{'encrypted_'.$id};
13070: }
13071: if (($env{'request.role.adv'}) ||
13072: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
13073: ($thisurl eq '/adm/navmaps')) {
13074: $okay=1;
13075: last;
13076: }
13077: }
13078: }
13079: }
13080: untie(%bighash);
13081: }
13082: return $okay;
13083: }
13084:
13085: # --------------------------------------------------------------- Clean-up symb
13086:
13087: sub symbclean {
13088: my $symb=shift;
13089: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
13090: # remove version from map
13091: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
13092:
13093: # remove version from URL
13094: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
13095:
13096: # remove wrapper
13097:
13098: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
13099: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
13100: return $symb;
13101: }
13102:
13103: # ---------------------------------------------- Split symb to find map and url
13104:
13105: sub encode_symb {
13106: my ($map,$resid,$url)=@_;
13107: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
13108: }
13109:
13110: sub decode_symb {
13111: my $symb=shift;
13112: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
13113: my ($map,$resid,$url)=split(/___/,$symb);
13114: return (&fixversion($map),$resid,&fixversion($url));
13115: }
13116:
13117: sub fixversion {
13118: my $fn=shift;
13119: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
13120: my %bighash;
13121: my $uri=&clutter($fn);
13122: my $key=$env{'request.course.id'}.'_'.$uri;
13123: # is this cached?
13124: my ($result,$cached)=&is_cached_new('courseresversion',$key);
13125: if (defined($cached)) { return $result; }
13126: # unfortunately not cached, or expired
13127: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
13128: &GDBM_READER(),0640)) {
13129: if ($bighash{'version_'.$uri}) {
13130: my $version=$bighash{'version_'.$uri};
13131: unless (($version eq 'mostrecent') ||
13132: ($version==&getversion($uri))) {
13133: $uri=~s/\.(\w+)$/\.$version\.$1/;
13134: }
13135: }
13136: untie %bighash;
13137: }
13138: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
13139: }
13140:
13141: sub deversion {
13142: my $url=shift;
13143: $url=~s/\.\d+\.(\w+)$/\.$1/;
13144: return $url;
13145: }
13146:
13147: # ------------------------------------------------------ Return symb list entry
13148:
13149: sub symbread {
13150: my ($thisfn,$donotrecurse,$ignorecachednull,$checkforblock,$possibles)=@_;
13151: my $cache_str='request.symbread.cached.'.$thisfn;
13152: if (defined($env{$cache_str})) {
13153: if ($ignorecachednull) {
13154: return $env{$cache_str} unless ($env{$cache_str} eq '');
13155: } else {
13156: return $env{$cache_str};
13157: }
13158: }
13159: # no filename provided? try from environment
13160: unless ($thisfn) {
13161: if ($env{'request.symb'}) {
13162: return $env{$cache_str}=&symbclean($env{'request.symb'});
13163: }
13164: $thisfn=$env{'request.filename'};
13165: }
13166: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
13167: # is that filename actually a symb? Verify, clean, and return
13168: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
13169: if (&symbverify($thisfn,$1)) {
13170: return $env{$cache_str}=&symbclean($thisfn);
13171: }
13172: }
13173: $thisfn=declutter($thisfn);
13174: my %hash;
13175: my %bighash;
13176: my $syval='';
13177: if (($env{'request.course.fn'}) && ($thisfn)) {
13178: my $targetfn = $thisfn;
13179: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
13180: $targetfn = 'adm/wrapper/'.$thisfn;
13181: }
13182: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
13183: $targetfn=$1;
13184: }
13185: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
13186: &GDBM_READER(),0640)) {
13187: $syval=$hash{$targetfn};
13188: untie(%hash);
13189: }
13190: # ---------------------------------------------------------- There was an entry
13191: if ($syval) {
13192: #unless ($syval=~/\_\d+$/) {
13193: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
13194: #&appenv({'request.ambiguous' => $thisfn});
13195: #return $env{$cache_str}='';
13196: #}
13197: #$syval.=$1;
13198: #}
13199: } else {
13200: # ------------------------------------------------------- Was not in symb table
13201: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
13202: &GDBM_READER(),0640)) {
13203: # ---------------------------------------------- Get ID(s) for current resource
13204: my $ids=$bighash{'ids_'.&clutter($thisfn)};
13205: unless ($ids) {
13206: $ids=$bighash{'ids_/'.$thisfn};
13207: }
13208: unless ($ids) {
13209: # alias?
13210: $ids=$bighash{'mapalias_'.$thisfn};
13211: }
13212: if ($ids) {
13213: # ------------------------------------------------------------------- Has ID(s)
13214: my @possibilities=split(/\,/,$ids);
13215: if ($#possibilities==0) {
13216: # ----------------------------------------------- There is only one possibility
13217: my ($mapid,$resid)=split(/\./,$ids);
13218: $syval=&encode_symb($bighash{'map_id_'.$mapid},
13219: $resid,$thisfn);
13220: if (ref($possibles) eq 'HASH') {
13221: $possibles->{$syval} = 1;
13222: }
13223: if ($checkforblock) {
13224: my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids});
13225: if (@blockers) {
13226: $syval = '';
13227: return;
13228: }
13229: }
13230: } elsif ((!$donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
13231: # ------------------------------------------ There is more than one possibility
13232: my $realpossible=0;
13233: foreach my $id (@possibilities) {
13234: my $file=$bighash{'src_'.$id};
13235: my $canaccess;
13236: if (($donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
13237: $canaccess = 1;
13238: } else {
13239: $canaccess = &allowed('bre',$file);
13240: }
13241: if ($canaccess) {
13242: my ($mapid,$resid)=split(/\./,$id);
13243: if ($bighash{'map_type_'.$mapid} ne 'page') {
13244: my $poss_syval=&encode_symb($bighash{'map_id_'.$mapid},
13245: $resid,$thisfn);
13246: if (ref($possibles) eq 'HASH') {
13247: $possibles->{$syval} = 1;
13248: }
13249: if ($checkforblock) {
13250: my @blockers = &has_comm_blocking('bre',$poss_syval,$file);
13251: unless (@blockers > 0) {
13252: $syval = $poss_syval;
13253: $realpossible++;
13254: }
13255: } else {
13256: $syval = $poss_syval;
13257: $realpossible++;
13258: }
13259: }
13260: }
13261: }
13262: if ($realpossible!=1) { $syval=''; }
13263: } else {
13264: $syval='';
13265: }
13266: }
13267: untie(%bighash);
13268: }
13269: }
13270: if ($syval) {
13271: return $env{$cache_str}=$syval;
13272: }
13273: }
13274: &appenv({'request.ambiguous' => $thisfn});
13275: return $env{$cache_str}='';
13276: }
13277:
13278: # ---------------------------------------------------------- Return random seed
13279:
13280: sub numval {
13281: my $txt=shift;
13282: $txt=~tr/A-J/0-9/;
13283: $txt=~tr/a-j/0-9/;
13284: $txt=~tr/K-T/0-9/;
13285: $txt=~tr/k-t/0-9/;
13286: $txt=~tr/U-Z/0-5/;
13287: $txt=~tr/u-z/0-5/;
13288: $txt=~s/\D//g;
13289: if ($_64bit) { if ($txt > 2**32) { return -1; } }
13290: return int($txt);
13291: }
13292:
13293: sub numval2 {
13294: my $txt=shift;
13295: $txt=~tr/A-J/0-9/;
13296: $txt=~tr/a-j/0-9/;
13297: $txt=~tr/K-T/0-9/;
13298: $txt=~tr/k-t/0-9/;
13299: $txt=~tr/U-Z/0-5/;
13300: $txt=~tr/u-z/0-5/;
13301: $txt=~s/\D//g;
13302: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
13303: my $total;
13304: foreach my $val (@txts) { $total+=$val; }
13305: if ($_64bit) { if ($total > 2**32) { return -1; } }
13306: return int($total);
13307: }
13308:
13309: sub numval3 {
13310: use integer;
13311: my $txt=shift;
13312: $txt=~tr/A-J/0-9/;
13313: $txt=~tr/a-j/0-9/;
13314: $txt=~tr/K-T/0-9/;
13315: $txt=~tr/k-t/0-9/;
13316: $txt=~tr/U-Z/0-5/;
13317: $txt=~tr/u-z/0-5/;
13318: $txt=~s/\D//g;
13319: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
13320: my $total;
13321: foreach my $val (@txts) { $total+=$val; }
13322: if ($_64bit) { $total=(($total<<32)>>32); }
13323: return $total;
13324: }
13325:
13326: sub digest {
13327: my ($data)=@_;
13328: my $digest=&Digest::MD5::md5($data);
13329: my ($a,$b,$c,$d)=unpack("iiii",$digest);
13330: my ($e,$f);
13331: {
13332: use integer;
13333: $e=($a+$b);
13334: $f=($c+$d);
13335: if ($_64bit) {
13336: $e=(($e<<32)>>32);
13337: $f=(($f<<32)>>32);
13338: }
13339: }
13340: if (wantarray) {
13341: return ($e,$f);
13342: } else {
13343: my $g;
13344: {
13345: use integer;
13346: $g=($e+$f);
13347: if ($_64bit) {
13348: $g=(($g<<32)>>32);
13349: }
13350: }
13351: return $g;
13352: }
13353: }
13354:
13355: sub latest_rnd_algorithm_id {
13356: return '64bit5';
13357: }
13358:
13359: sub get_rand_alg {
13360: my ($courseid)=@_;
13361: if (!$courseid) { $courseid=(&whichuser())[1]; }
13362: if ($courseid) {
13363: return $env{"course.$courseid.rndseed"};
13364: }
13365: return &latest_rnd_algorithm_id();
13366: }
13367:
13368: sub validCODE {
13369: my ($CODE)=@_;
13370: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
13371: return 0;
13372: }
13373:
13374: sub getCODE {
13375: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
13376: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
13377: defined($Apache::lonhomework::parsing_a_task) ) &&
13378: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
13379: return $Apache::lonhomework::history{'resource.CODE'};
13380: }
13381: return undef;
13382: }
13383: #
13384: # Determines the random seed for a specific context:
13385: #
13386: # parameters:
13387: # symb - in course context the symb for the seed.
13388: # course_id - The course id of the form domain_coursenum.
13389: # domain - Domain for the user.
13390: # course - Course for the user.
13391: # cenv - environment of the course.
13392: #
13393: # NOTE:
13394: # All parameters are picked out of the environment if missing
13395: # or not defined.
13396: # If a symb cannot be determined the current time is used instead.
13397: #
13398: # For a given well defined symb, courside, domain, username,
13399: # and course environment, the seed is reproducible.
13400: #
13401: sub rndseed {
13402: my ($symb,$courseid,$domain,$username, $cenv)=@_;
13403: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
13404: if (!defined($symb)) {
13405: unless ($symb=$wsymb) { return time; }
13406: }
13407: if (!defined $courseid) {
13408: $courseid=$wcourseid;
13409: }
13410: if (!defined $domain) { $domain=$wdomain; }
13411: if (!defined $username) { $username=$wusername }
13412:
13413: my $which;
13414: if (defined($cenv->{'rndseed'})) {
13415: $which = $cenv->{'rndseed'};
13416: } else {
13417: $which =&get_rand_alg($courseid);
13418: }
13419: if (defined(&getCODE())) {
13420:
13421: if ($which eq '64bit5') {
13422: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
13423: } elsif ($which eq '64bit4') {
13424: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
13425: } else {
13426: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
13427: }
13428: } elsif ($which eq '64bit5') {
13429: return &rndseed_64bit5($symb,$courseid,$domain,$username);
13430: } elsif ($which eq '64bit4') {
13431: return &rndseed_64bit4($symb,$courseid,$domain,$username);
13432: } elsif ($which eq '64bit3') {
13433: return &rndseed_64bit3($symb,$courseid,$domain,$username);
13434: } elsif ($which eq '64bit2') {
13435: return &rndseed_64bit2($symb,$courseid,$domain,$username);
13436: } elsif ($which eq '64bit') {
13437: return &rndseed_64bit($symb,$courseid,$domain,$username);
13438: }
13439: return &rndseed_32bit($symb,$courseid,$domain,$username);
13440: }
13441:
13442: sub rndseed_32bit {
13443: my ($symb,$courseid,$domain,$username)=@_;
13444: {
13445: use integer;
13446: my $symbchck=unpack("%32C*",$symb) << 27;
13447: my $symbseed=numval($symb) << 22;
13448: my $namechck=unpack("%32C*",$username) << 17;
13449: my $nameseed=numval($username) << 12;
13450: my $domainseed=unpack("%32C*",$domain) << 7;
13451: my $courseseed=unpack("%32C*",$courseid);
13452: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
13453: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13454: #&logthis("rndseed :$num:$symb");
13455: if ($_64bit) { $num=(($num<<32)>>32); }
13456: return $num;
13457: }
13458: }
13459:
13460: sub rndseed_64bit {
13461: my ($symb,$courseid,$domain,$username)=@_;
13462: {
13463: use integer;
13464: my $symbchck=unpack("%32S*",$symb) << 21;
13465: my $symbseed=numval($symb) << 10;
13466: my $namechck=unpack("%32S*",$username);
13467:
13468: my $nameseed=numval($username) << 21;
13469: my $domainseed=unpack("%32S*",$domain) << 10;
13470: my $courseseed=unpack("%32S*",$courseid);
13471:
13472: my $num1=$symbchck+$symbseed+$namechck;
13473: my $num2=$nameseed+$domainseed+$courseseed;
13474: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13475: #&logthis("rndseed :$num:$symb");
13476: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13477: return "$num1,$num2";
13478: }
13479: }
13480:
13481: sub rndseed_64bit2 {
13482: my ($symb,$courseid,$domain,$username)=@_;
13483: {
13484: use integer;
13485: # strings need to be an even # of cahracters long, it it is odd the
13486: # last characters gets thrown away
13487: my $symbchck=unpack("%32S*",$symb.' ') << 21;
13488: my $symbseed=numval($symb) << 10;
13489: my $namechck=unpack("%32S*",$username.' ');
13490:
13491: my $nameseed=numval($username) << 21;
13492: my $domainseed=unpack("%32S*",$domain.' ') << 10;
13493: my $courseseed=unpack("%32S*",$courseid.' ');
13494:
13495: my $num1=$symbchck+$symbseed+$namechck;
13496: my $num2=$nameseed+$domainseed+$courseseed;
13497: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13498: #&logthis("rndseed :$num:$symb");
13499: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13500: return "$num1,$num2";
13501: }
13502: }
13503:
13504: sub rndseed_64bit3 {
13505: my ($symb,$courseid,$domain,$username)=@_;
13506: {
13507: use integer;
13508: # strings need to be an even # of cahracters long, it it is odd the
13509: # last characters gets thrown away
13510: my $symbchck=unpack("%32S*",$symb.' ') << 21;
13511: my $symbseed=numval2($symb) << 10;
13512: my $namechck=unpack("%32S*",$username.' ');
13513:
13514: my $nameseed=numval2($username) << 21;
13515: my $domainseed=unpack("%32S*",$domain.' ') << 10;
13516: my $courseseed=unpack("%32S*",$courseid.' ');
13517:
13518: my $num1=$symbchck+$symbseed+$namechck;
13519: my $num2=$nameseed+$domainseed+$courseseed;
13520: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13521: #&logthis("rndseed :$num1:$num2:$_64bit");
13522: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13523:
13524: return "$num1:$num2";
13525: }
13526: }
13527:
13528: sub rndseed_64bit4 {
13529: my ($symb,$courseid,$domain,$username)=@_;
13530: {
13531: use integer;
13532: # strings need to be an even # of cahracters long, it it is odd the
13533: # last characters gets thrown away
13534: my $symbchck=unpack("%32S*",$symb.' ') << 21;
13535: my $symbseed=numval3($symb) << 10;
13536: my $namechck=unpack("%32S*",$username.' ');
13537:
13538: my $nameseed=numval3($username) << 21;
13539: my $domainseed=unpack("%32S*",$domain.' ') << 10;
13540: my $courseseed=unpack("%32S*",$courseid.' ');
13541:
13542: my $num1=$symbchck+$symbseed+$namechck;
13543: my $num2=$nameseed+$domainseed+$courseseed;
13544: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13545: #&logthis("rndseed :$num1:$num2:$_64bit");
13546: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13547:
13548: return "$num1:$num2";
13549: }
13550: }
13551:
13552: sub rndseed_64bit5 {
13553: my ($symb,$courseid,$domain,$username)=@_;
13554: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
13555: return "$num1:$num2";
13556: }
13557:
13558: sub rndseed_CODE_64bit {
13559: my ($symb,$courseid,$domain,$username)=@_;
13560: {
13561: use integer;
13562: my $symbchck=unpack("%32S*",$symb.' ') << 16;
13563: my $symbseed=numval2($symb);
13564: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
13565: my $CODEseed=numval(&getCODE());
13566: my $courseseed=unpack("%32S*",$courseid.' ');
13567: my $num1=$symbseed+$CODEchck;
13568: my $num2=$CODEseed+$courseseed+$symbchck;
13569: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
13570: #&logthis("rndseed :$num1:$num2:$symb");
13571: if ($_64bit) { $num1=(($num1<<32)>>32); }
13572: if ($_64bit) { $num2=(($num2<<32)>>32); }
13573: return "$num1:$num2";
13574: }
13575: }
13576:
13577: sub rndseed_CODE_64bit4 {
13578: my ($symb,$courseid,$domain,$username)=@_;
13579: {
13580: use integer;
13581: my $symbchck=unpack("%32S*",$symb.' ') << 16;
13582: my $symbseed=numval3($symb);
13583: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
13584: my $CODEseed=numval3(&getCODE());
13585: my $courseseed=unpack("%32S*",$courseid.' ');
13586: my $num1=$symbseed+$CODEchck;
13587: my $num2=$CODEseed+$courseseed+$symbchck;
13588: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
13589: #&logthis("rndseed :$num1:$num2:$symb");
13590: if ($_64bit) { $num1=(($num1<<32)>>32); }
13591: if ($_64bit) { $num2=(($num2<<32)>>32); }
13592: return "$num1:$num2";
13593: }
13594: }
13595:
13596: sub rndseed_CODE_64bit5 {
13597: my ($symb,$courseid,$domain,$username)=@_;
13598: my $code = &getCODE();
13599: my ($num1,$num2)=&digest("$symb,$courseid,$code");
13600: return "$num1:$num2";
13601: }
13602:
13603: sub setup_random_from_rndseed {
13604: my ($rndseed)=@_;
13605: if ($rndseed =~/([,:])/) {
13606: my ($num1,$num2) = map { abs($_); } (split(/[,:]/,$rndseed));
13607: if ((!$num1) || (!$num2) || ($num1 > 2147483562) || ($num2 > 2147483398)) {
13608: &Math::Random::random_set_seed_from_phrase($rndseed);
13609: } else {
13610: &Math::Random::random_set_seed($num1,$num2);
13611: }
13612: } else {
13613: &Math::Random::random_set_seed_from_phrase($rndseed);
13614: }
13615: }
13616:
13617: sub latest_receipt_algorithm_id {
13618: return 'receipt3';
13619: }
13620:
13621: sub recunique {
13622: my $fucourseid=shift;
13623: my $unique;
13624: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
13625: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
13626: $unique=$env{"course.$fucourseid.internal.encseed"};
13627: } else {
13628: $unique=$perlvar{'lonReceipt'};
13629: }
13630: return unpack("%32C*",$unique);
13631: }
13632:
13633: sub recprefix {
13634: my $fucourseid=shift;
13635: my $prefix;
13636: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
13637: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
13638: $prefix=$env{"course.$fucourseid.internal.encpref"};
13639: } else {
13640: $prefix=$perlvar{'lonHostID'};
13641: }
13642: return unpack("%32C*",$prefix);
13643: }
13644:
13645: sub ireceipt {
13646: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
13647:
13648: my $return =&recprefix($fucourseid).'-';
13649:
13650: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
13651: $env{'request.state'} eq 'construct') {
13652: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
13653: return $return;
13654: }
13655:
13656: my $cuname=unpack("%32C*",$funame);
13657: my $cudom=unpack("%32C*",$fudom);
13658: my $cucourseid=unpack("%32C*",$fucourseid);
13659: my $cusymb=unpack("%32C*",$fusymb);
13660: my $cunique=&recunique($fucourseid);
13661: my $cpart=unpack("%32S*",$part);
13662: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
13663:
13664: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
13665:
13666: $return.= ($cunique%$cuname+
13667: $cunique%$cudom+
13668: $cusymb%$cuname+
13669: $cusymb%$cudom+
13670: $cucourseid%$cuname+
13671: $cucourseid%$cudom+
13672: $cpart%$cuname+
13673: $cpart%$cudom);
13674: } else {
13675: $return.= ($cunique%$cuname+
13676: $cunique%$cudom+
13677: $cusymb%$cuname+
13678: $cusymb%$cudom+
13679: $cucourseid%$cuname+
13680: $cucourseid%$cudom);
13681: }
13682: return $return;
13683: }
13684:
13685: sub receipt {
13686: my ($part)=@_;
13687: my ($symb,$courseid,$domain,$name) = &whichuser();
13688: return &ireceipt($name,$domain,$courseid,$symb,$part);
13689: }
13690:
13691: sub whichuser {
13692: my ($passedsymb)=@_;
13693: my ($symb,$courseid,$domain,$name,$publicuser);
13694: if (defined($env{'form.grade_symb'})) {
13695: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
13696: my $allowed=&allowed('vgr',$tmp_courseid);
13697: if (!$allowed &&
13698: exists($env{'request.course.sec'}) &&
13699: $env{'request.course.sec'} !~ /^\s*$/) {
13700: $allowed=&allowed('vgr',$tmp_courseid.
13701: '/'.$env{'request.course.sec'});
13702: }
13703: if ($allowed) {
13704: ($symb)=&get_env_multiple('form.grade_symb');
13705: $courseid=$tmp_courseid;
13706: ($domain)=&get_env_multiple('form.grade_domain');
13707: ($name)=&get_env_multiple('form.grade_username');
13708: return ($symb,$courseid,$domain,$name,$publicuser);
13709: }
13710: }
13711: if (!$passedsymb) {
13712: $symb=&symbread();
13713: } else {
13714: $symb=$passedsymb;
13715: }
13716: $courseid=$env{'request.course.id'};
13717: $domain=$env{'user.domain'};
13718: $name=$env{'user.name'};
13719: if ($name eq 'public' && $domain eq 'public') {
13720: if (!defined($env{'form.username'})) {
13721: $env{'form.username'}.=time.rand(10000000);
13722: }
13723: $name.=$env{'form.username'};
13724: }
13725: return ($symb,$courseid,$domain,$name,$publicuser);
13726:
13727: }
13728:
13729: # ------------------------------------------------------------ Serves up a file
13730: # returns either the contents of the file or
13731: # -1 if the file doesn't exist
13732: #
13733: # if the target is a file that was uploaded via DOCS,
13734: # a check will be made to see if a current copy exists on the local server,
13735: # if it does this will be served, otherwise a copy will be retrieved from
13736: # the home server for the course and stored in /home/httpd/html/userfiles on
13737: # the local server.
13738:
13739: sub getfile {
13740: my ($file) = @_;
13741: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
13742: &repcopy($file);
13743: return &readfile($file);
13744: }
13745:
13746: sub repcopy_userfile {
13747: my ($file)=@_;
13748: my $londocroot = $perlvar{'lonDocRoot'};
13749: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
13750: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
13751: my ($cdom,$cnum,$filename) =
13752: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
13753: my $uri="/uploaded/$cdom/$cnum/$filename";
13754: if (-e "$file") {
13755: # we already have a local copy, check it out
13756: my @fileinfo = stat($file);
13757: my $rtncode;
13758: my $info;
13759: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
13760: if ($lwpresp ne 'ok') {
13761: # there is no such file anymore, even though we had a local copy
13762: if ($rtncode eq '404') {
13763: unlink($file);
13764: }
13765: return -1;
13766: }
13767: if ($info < $fileinfo[9]) {
13768: # nice, the file we have is up-to-date, just say okay
13769: return 'ok';
13770: } else {
13771: # the file is outdated, get rid of it
13772: unlink($file);
13773: }
13774: }
13775: # one way or the other, at this point, we don't have the file
13776: # construct the correct path for the file
13777: my @parts = ($cdom,$cnum);
13778: if ($filename =~ m|^(.+)/[^/]+$|) {
13779: push @parts, split(/\//,$1);
13780: }
13781: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
13782: foreach my $part (@parts) {
13783: $path .= '/'.$part;
13784: if (!-e $path) {
13785: mkdir($path,0770);
13786: }
13787: }
13788: # now the path exists for sure
13789: # get a user agent
13790: my $transferfile=$file.'.in.transfer';
13791: # FIXME: this should flock
13792: if (-e $transferfile) { return 'ok'; }
13793: my $request;
13794: $uri=~s/^\///;
13795: my $homeserver = &homeserver($cnum,$cdom);
13796: my $hostname = &hostname($homeserver);
13797: my $protocol = $protocol{$homeserver};
13798: $protocol = 'http' if ($protocol ne 'https');
13799: $request=new HTTP::Request('GET',$protocol.'://'.$hostname.'/raw/'.$uri);
13800: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,$transferfile,\%perlvar,'',0,1);
13801: # did it work?
13802: if ($response->is_error()) {
13803: unlink($transferfile);
13804: &logthis("Userfile repcopy failed for $uri");
13805: return -1;
13806: }
13807: # worked, rename the transfer file
13808: rename($transferfile,$file);
13809: return 'ok';
13810: }
13811:
13812: sub tokenwrapper {
13813: my $uri=shift;
13814: $uri=~s|^https?\://([^/]+)||;
13815: $uri=~s|^/||;
13816: $env{'user.environment'}=~/\/([^\/]+)\.id/;
13817: my $token=$1;
13818: my (undef,$udom,$uname,$file)=split('/',$uri,4);
13819: if ($udom && $uname && $file) {
13820: $file=~s|(\?\.*)*$||;
13821: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
13822: my $homeserver = &homeserver($uname,$udom);
13823: my $hostname = &hostname($homeserver);
13824: my $protocol = $protocol{$homeserver};
13825: $protocol = 'http' if ($protocol ne 'https');
13826: return $protocol.'://'.$hostname.'/'.$uri.
13827: (($uri=~/\?/)?'&':'?').'token='.$token.
13828: '&tokenissued='.$perlvar{'lonHostID'};
13829: } else {
13830: return '/adm/notfound.html';
13831: }
13832: }
13833:
13834: # call with reqtype HEAD: get last modification time
13835: # call with reqtype GET: get the file contents
13836: # Do not call this with reqtype GET for large files! It loads everything into memory
13837: #
13838: sub getuploaded {
13839: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
13840: $uri=~s/^\///;
13841: my $homeserver = &homeserver($cnum,$cdom);
13842: my $hostname = &hostname($homeserver);
13843: my $protocol = $protocol{$homeserver};
13844: $protocol = 'http' if ($protocol ne 'https');
13845: $uri = $protocol.'://'.$hostname.'/raw/'.$uri;
13846: my $request=new HTTP::Request($reqtype,$uri);
13847: my $response=&LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,'',0,1);
13848: $$rtncode = $response->code;
13849: if (! $response->is_success()) {
13850: return 'failed';
13851: }
13852: if ($reqtype eq 'HEAD') {
13853: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
13854: } elsif ($reqtype eq 'GET') {
13855: $$info = $response->content;
13856: }
13857: return 'ok';
13858: }
13859:
13860: sub readfile {
13861: my $file = shift;
13862: if ( (! -e $file ) || ($file eq '') ) { return -1; };
13863: my $fh;
13864: open($fh,"<",$file);
13865: my $a='';
13866: while (my $line = <$fh>) { $a .= $line; }
13867: return $a;
13868: }
13869:
13870: sub filelocation {
13871: my ($dir,$file) = @_;
13872: my $location;
13873: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
13874:
13875: if ($file =~ m-^/adm/-) {
13876: $file=~s-^/adm/wrapper/-/-;
13877: $file=~s-^/adm/coursedocs/showdoc/-/-;
13878: }
13879:
13880: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
13881: $location = $file;
13882: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
13883: my ($udom,$uname,$filename)=
13884: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
13885: my $home=&homeserver($uname,$udom);
13886: my $is_me=0;
13887: my @ids=¤t_machine_ids();
13888: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
13889: if ($is_me) {
13890: $location=propath($udom,$uname).'/userfiles/'.$filename;
13891: } else {
13892: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
13893: $udom.'/'.$uname.'/'.$filename;
13894: }
13895: } elsif ($file =~ m-^/adm/-) {
13896: $location = $perlvar{'lonDocRoot'}.'/'.$file;
13897: } else {
13898: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
13899: $file=~s:^/(res|priv)/:/:;
13900: my $space=$1;
13901: if ( !( $file =~ m:^/:) ) {
13902: $location = $dir. '/'.$file;
13903: } else {
13904: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
13905: }
13906: }
13907: $location=~s://+:/:g; # remove duplicate /
13908: while ($location=~m{/\.\./}) {
13909: if ($location =~ m{/[^/]+/\.\./}) {
13910: $location=~ s{/[^/]+/\.\./}{/}g;
13911: } else {
13912: $location=~ s{/\.\./}{/}g;
13913: }
13914: } #remove dir/..
13915: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
13916: return $location;
13917: }
13918:
13919: sub hreflocation {
13920: my ($dir,$file)=@_;
13921: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
13922: $file=filelocation($dir,$file);
13923: } elsif ($file=~m-^/adm/-) {
13924: $file=~s-^/adm/wrapper/-/-;
13925: $file=~s-^/adm/coursedocs/showdoc/-/-;
13926: }
13927: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
13928: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
13929: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
13930: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
13931: {/uploaded/$1/$2/}x;
13932: }
13933: if ($file=~ m{^/userfiles/}) {
13934: $file =~ s{^/userfiles/}{/uploaded/};
13935: }
13936: return $file;
13937: }
13938:
13939:
13940:
13941:
13942:
13943: sub current_machine_domains {
13944: return &machine_domains(&hostname($perlvar{'lonHostID'}));
13945: }
13946:
13947: sub machine_domains {
13948: my ($hostname) = @_;
13949: my @domains;
13950: my %hostname = &all_hostnames();
13951: while( my($id, $name) = each(%hostname)) {
13952: # &logthis("-$id-$name-$hostname-");
13953: if ($hostname eq $name) {
13954: push(@domains,&host_domain($id));
13955: }
13956: }
13957: return @domains;
13958: }
13959:
13960: sub current_machine_ids {
13961: return &machine_ids(&hostname($perlvar{'lonHostID'}));
13962: }
13963:
13964: sub machine_ids {
13965: my ($hostname) = @_;
13966: $hostname ||= &hostname($perlvar{'lonHostID'});
13967: my @ids;
13968: my %name_to_host = &all_names();
13969: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
13970: return @{ $name_to_host{$hostname} };
13971: }
13972: return;
13973: }
13974:
13975: sub additional_machine_domains {
13976: my @domains;
13977: open(my $fh,"<","$perlvar{'lonTabDir'}/expected_domains.tab");
13978: while( my $line = <$fh>) {
13979: $line =~ s/\s//g;
13980: push(@domains,$line);
13981: }
13982: return @domains;
13983: }
13984:
13985: sub default_login_domain {
13986: my $domain = $perlvar{'lonDefDomain'};
13987: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
13988: foreach my $posdom (¤t_machine_domains(),
13989: &additional_machine_domains()) {
13990: if (lc($posdom) eq lc($testdomain)) {
13991: $domain=$posdom;
13992: last;
13993: }
13994: }
13995: return $domain;
13996: }
13997:
13998: sub uses_sts {
13999: my ($ignore_cache) = @_;
14000: my $lonhost = $perlvar{'lonHostID'};
14001: my $hostname = &hostname($lonhost);
14002: my $sts_on;
14003: if ($protocol{$lonhost} eq 'https') {
14004: my $cachetime = 12*3600;
14005: if (!$ignore_cache) {
14006: ($sts_on,my $cached)=&is_cached_new('stspolicy',$lonhost);
14007: if (defined($cached)) {
14008: return $sts_on;
14009: }
14010: }
14011: my $url = $protocol{$lonhost}.'://'.$hostname.'/index.html';
14012: my $request=new HTTP::Request('HEAD',$url);
14013: my $response=&LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,'','','',1);
14014: if ($response->is_success) {
14015: my $has_sts = $response->header('Strict-Transport-Security');
14016: if ($has_sts eq '') {
14017: $sts_on = 0;
14018: } else {
14019: if ($has_sts =~ /\Qmax-age=\E(\d+)/) {
14020: my $maxage = $1;
14021: if ($maxage) {
14022: $sts_on = 1;
14023: } else {
14024: $sts_on = 0;
14025: }
14026: } else {
14027: $sts_on = 0;
14028: }
14029: }
14030: return &do_cache_new('stspolicy',$lonhost,$sts_on,$cachetime);
14031: }
14032: }
14033: return;
14034: }
14035:
14036: # ------------------------------------------------------------- Declutters URLs
14037:
14038: sub declutter {
14039: my $thisfn=shift;
14040: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
14041: unless ($thisfn=~m{^/home/httpd/html/priv/}) {
14042: $thisfn=~s{^/home/httpd/html}{};
14043: }
14044: $thisfn=~s/^\///;
14045: $thisfn=~s|^adm/wrapper/||;
14046: $thisfn=~s|^adm/coursedocs/showdoc/||;
14047: $thisfn=~s/^res\///;
14048: $thisfn=~s/^priv\///;
14049: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
14050: $thisfn=~s/\?.+$//;
14051: }
14052: return $thisfn;
14053: }
14054:
14055: # ------------------------------------------------------------- Clutter up URLs
14056:
14057: sub clutter {
14058: my $thisfn='/'.&declutter(shift);
14059: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
14060: || $thisfn =~ m{^/adm/(includes|pages)} ) {
14061: $thisfn='/res'.$thisfn;
14062: }
14063: if ($thisfn !~m|^/adm|) {
14064: if ($thisfn =~ m|^/ext/|) {
14065: $thisfn='/adm/wrapper'.$thisfn;
14066: } else {
14067: my ($ext) = ($thisfn =~ /\.(\w+)$/);
14068: my $embstyle=&Apache::loncommon::fileembstyle($ext);
14069: if ($embstyle eq 'ssi'
14070: || ($embstyle eq 'hdn')
14071: || ($embstyle eq 'rat')
14072: || ($embstyle eq 'prv')
14073: || ($embstyle eq 'ign')) {
14074: #do nothing with these
14075: } elsif (($embstyle eq 'img')
14076: || ($embstyle eq 'emb')
14077: || ($embstyle eq 'wrp')) {
14078: $thisfn='/adm/wrapper'.$thisfn;
14079: } elsif ($embstyle eq 'unk'
14080: && $thisfn!~/\.(sequence|page)$/) {
14081: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
14082: } else {
14083: # &logthis("Got a blank emb style");
14084: }
14085: }
14086: } elsif ($thisfn =~ m{^/adm/$match_domain/$match_courseid/\d+/ext\.tool$}) {
14087: $thisfn='/adm/wrapper'.$thisfn;
14088: }
14089: return $thisfn;
14090: }
14091:
14092: sub clutter_with_no_wrapper {
14093: my $uri = &clutter(shift);
14094: if ($uri =~ m-^/adm/-) {
14095: $uri =~ s-^/adm/wrapper/-/-;
14096: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
14097: }
14098: return $uri;
14099: }
14100:
14101: sub freeze_escape {
14102: my ($value)=@_;
14103: if (ref($value)) {
14104: $value=&nfreeze($value);
14105: return '__FROZEN__'.&escape($value);
14106: }
14107: return &escape($value);
14108: }
14109:
14110:
14111: sub thaw_unescape {
14112: my ($value)=@_;
14113: if ($value =~ /^__FROZEN__/) {
14114: substr($value,0,10,undef);
14115: $value=&unescape($value);
14116: return &thaw($value);
14117: }
14118: return &unescape($value);
14119: }
14120:
14121: sub correct_line_ends {
14122: my ($result)=@_;
14123: $$result =~s/\r\n/\n/mg;
14124: $$result =~s/\r/\n/mg;
14125: }
14126: # ================================================================ Main Program
14127:
14128: sub goodbye {
14129: &logthis("Starting Shut down");
14130: #not converted to using infrastruture and probably shouldn't be
14131: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
14132: #converted
14133: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
14134: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
14135: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
14136: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
14137: #1.1 only
14138: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
14139: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
14140: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
14141: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
14142: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
14143: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
14144: &logthis(sprintf("%-20s is %s",'hits',$hits));
14145: &flushcourselogs();
14146: &logthis("Shutting down");
14147: }
14148:
14149: sub get_dns {
14150: my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
14151: if (!$ignore_cache) {
14152: my ($content,$cached)=
14153: &Apache::lonnet::is_cached_new('dns',$url);
14154: if ($cached) {
14155: &$func($content,$hashref);
14156: return;
14157: }
14158: }
14159:
14160: my %alldns;
14161: if (open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab")) {
14162: foreach my $dns (<$config>) {
14163: next if ($dns !~ /^\^(\S*)/x);
14164: my $line = $1;
14165: my ($host,$protocol) = split(/:/,$line);
14166: if ($protocol ne 'https') {
14167: $protocol = 'http';
14168: }
14169: $alldns{$host} = $protocol;
14170: }
14171: close($config);
14172: }
14173: while (%alldns) {
14174: my ($dns) = sort { $b cmp $a } keys(%alldns);
14175: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
14176: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar,30,0);
14177: delete($alldns{$dns});
14178: next if ($response->is_error());
14179: if ($url eq '/adm/dns/loncapaCRL') {
14180: return &$func($response);
14181: } else {
14182: my @content = split("\n",$response->content);
14183: unless ($nocache) {
14184: &do_cache_new('dns',$url,\@content,30*24*60*60);
14185: }
14186: &$func(\@content,$hashref);
14187: return;
14188: }
14189: }
14190: my $which = (split('/',$url,4))[3];
14191: if ($which eq 'loncapaCRL') {
14192: my $diskfile = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
14193: if (-e $diskfile) {
14194: &logthis("unable to contact DNS, on disk file $diskfile not updated");
14195: } else {
14196: &logthis("unable to contact DNS, no on disk file $diskfile available");
14197: }
14198: } else {
14199: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
14200: if (open(my $config,"<","$perlvar{'lonTabDir'}/dns_$which.tab")) {
14201: my @content = <$config>;
14202: close($config);
14203: &$func(\@content,$hashref);
14204: }
14205: }
14206: return;
14207: }
14208:
14209: # ------------------------------------------------------Get DNS checksums file
14210: sub parse_dns_checksums_tab {
14211: my ($lines,$hashref) = @_;
14212: my $lonhost = $perlvar{'lonHostID'};
14213: my $machine_dom = &Apache::lonnet::host_domain($lonhost);
14214: my $loncaparev = &get_server_loncaparev($machine_dom);
14215: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
14216: my $webconfdir = '/etc/httpd/conf';
14217: if ($distro =~ /^(ubuntu|debian)(\d+)$/) {
14218: $webconfdir = '/etc/apache2';
14219: } elsif ($distro =~ /^sles(\d+)$/) {
14220: if ($1 >= 10) {
14221: $webconfdir = '/etc/apache2';
14222: }
14223: } elsif ($distro =~ /^suse(\d+\.\d+)$/) {
14224: if ($1 >= 10.0) {
14225: $webconfdir = '/etc/apache2';
14226: }
14227: }
14228: my ($release,$timestamp) = split(/\-/,$loncaparev);
14229: my (%chksum,%revnum);
14230: if (ref($lines) eq 'ARRAY') {
14231: chomp(@{$lines});
14232: my $version = shift(@{$lines});
14233: if ($version eq $release) {
14234: foreach my $line (@{$lines}) {
14235: my ($file,$version,$shasum) = split(/,/,$line);
14236: if ($file =~ m{^/etc/httpd/conf}) {
14237: if ($webconfdir eq '/etc/apache2') {
14238: $file =~ s{^\Q/etc/httpd/conf/\E}{$webconfdir/};
14239: }
14240: }
14241: $chksum{$file} = $shasum;
14242: $revnum{$file} = $version;
14243: }
14244: if (ref($hashref) eq 'HASH') {
14245: %{$hashref} = (
14246: sums => \%chksum,
14247: versions => \%revnum,
14248: );
14249: }
14250: }
14251: }
14252: return;
14253: }
14254:
14255: sub fetch_dns_checksums {
14256: my %checksums;
14257: my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
14258: my $loncaparev = &get_server_loncaparev($machine_dom,$perlvar{'lonHostID'});
14259: my ($release,$timestamp) = split(/\-/,$loncaparev);
14260: &get_dns("/adm/dns/checksums/$release",\&parse_dns_checksums_tab,1,1,
14261: \%checksums);
14262: return \%checksums;
14263: }
14264:
14265: sub fetch_crl_pemfile {
14266: return &get_dns("/adm/dns/loncapaCRL",\&save_crl_pem,1,1);
14267: }
14268:
14269: sub save_crl_pem {
14270: my ($response) = @_;
14271: my ($msg,$hadchanges);
14272: if (ref($response)) {
14273: my $now = time;
14274: my $lonca = $perlvar{'lonCertificateDirectory'}.'/'.$perlvar{'lonnetCertificateAuthority'};
14275: my $tmpcrl = $tmpdir.'/'.$perlvar{'lonnetCertRevocationList'}.'_'.$now.'.'.$$.'.tmp';
14276: if (open(my $fh,'>',"$tmpcrl")) {
14277: print $fh $response->content;
14278: close($fh);
14279: if (-e $lonca) {
14280: if (open(PIPE,"openssl crl -in $tmpcrl -inform pem -CAfile $lonca -noout 2>&1 |")) {
14281: my $check = <PIPE>;
14282: close(PIPE);
14283: chomp($check);
14284: if ($check eq 'verify OK') {
14285: my $dest = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
14286: my $backup;
14287: if (-e $dest) {
14288: if (&File::Copy::move($dest,"$dest.bak")) {
14289: $backup = 'ok';
14290: }
14291: }
14292: if (&File::Copy::move($tmpcrl,$dest)) {
14293: $msg = 'ok';
14294: if ($backup) {
14295: my (%oldnums,%newnums);
14296: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest.bak |grep 'Serial Number' |")) {
14297: while (<PIPE>) {
14298: $oldnums{(split(/:/))[1]} = 1;
14299: }
14300: close(PIPE);
14301: }
14302: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest |grep 'Serial Number' |")) {
14303: while(<PIPE>) {
14304: $newnums{(split(/:/))[1]} = 1;
14305: }
14306: close(PIPE);
14307: }
14308: foreach my $key (sort {$b <=> $a } (keys(%newnums))) {
14309: unless (exists($oldnums{$key})) {
14310: $hadchanges = 1;
14311: last;
14312: }
14313: }
14314: unless ($hadchanges) {
14315: foreach my $key (sort {$b <=> $a } (keys(%oldnums))) {
14316: unless (exists($newnums{$key})) {
14317: $hadchanges = 1;
14318: last;
14319: }
14320: }
14321: }
14322: }
14323: }
14324: } else {
14325: unlink($tmpcrl);
14326: }
14327: } else {
14328: unlink($tmpcrl);
14329: }
14330: } else {
14331: unlink($tmpcrl);
14332: }
14333: }
14334: }
14335: return ($msg,$hadchanges);
14336: }
14337:
14338: # ------------------------------------------------------------ Read domain file
14339: {
14340: my $loaded;
14341: my %domain;
14342:
14343: sub parse_domain_tab {
14344: my ($lines) = @_;
14345: foreach my $line (@$lines) {
14346: next if ($line =~ /^(\#|\s*$ )/x);
14347:
14348: chomp($line);
14349: my ($name,@elements) = split(/:/,$line,9);
14350: my %this_domain;
14351: foreach my $field ('description', 'auth_def', 'auth_arg_def',
14352: 'lang_def', 'city', 'longi', 'lati',
14353: 'primary') {
14354: $this_domain{$field} = shift(@elements);
14355: }
14356: $domain{$name} = \%this_domain;
14357: }
14358: }
14359:
14360: sub reset_domain_info {
14361: undef($loaded);
14362: undef(%domain);
14363: }
14364:
14365: sub load_domain_tab {
14366: my ($ignore_cache,$nocache) = @_;
14367: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache,$nocache);
14368: my $fh;
14369: if (open($fh,"<",$perlvar{'lonTabDir'}.'/domain.tab')) {
14370: my @lines = <$fh>;
14371: &parse_domain_tab(\@lines);
14372: }
14373: close($fh);
14374: $loaded = 1;
14375: }
14376:
14377: sub domain {
14378: &load_domain_tab() if (!$loaded);
14379:
14380: my ($name,$what) = @_;
14381: return if ( !exists($domain{$name}) );
14382:
14383: if (!$what) {
14384: return $domain{$name}{'description'};
14385: }
14386: return $domain{$name}{$what};
14387: }
14388:
14389: sub domain_info {
14390: &load_domain_tab() if (!$loaded);
14391: return %domain;
14392: }
14393:
14394: }
14395:
14396:
14397: # ------------------------------------------------------------- Read hosts file
14398: {
14399: my %hostname;
14400: my %hostdom;
14401: my %libserv;
14402: my $loaded;
14403: my %name_to_host;
14404: my %internetdom;
14405: my %LC_dns_serv;
14406:
14407: sub parse_hosts_tab {
14408: my ($file) = @_;
14409: foreach my $configline (@$file) {
14410: next if ($configline =~ /^(\#|\s*$ )/x);
14411: chomp($configline);
14412: if ($configline =~ /^\^/) {
14413: if ($configline =~ /^\^([\w.\-]+)/) {
14414: $LC_dns_serv{$1} = 1;
14415: }
14416: next;
14417: }
14418: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
14419: $name=~s/\s//g;
14420: if ($id && $domain && $role && $name) {
14421: if ((exists($hostname{$id})) && ($hostname{$id} ne '')) {
14422: my $curr = $hostname{$id};
14423: my $skip;
14424: if (ref($name_to_host{$curr}) eq 'ARRAY') {
14425: if (($curr eq $name) && (@{$name_to_host{$curr}} == 1)) {
14426: $skip = 1;
14427: } else {
14428: @{$name_to_host{$curr}} = grep { $_ ne $id } @{$name_to_host{$curr}};
14429: }
14430: }
14431: unless ($skip) {
14432: push(@{$name_to_host{$name}},$id);
14433: }
14434: } else {
14435: push(@{$name_to_host{$name}},$id);
14436: }
14437: $hostname{$id}=$name;
14438: $hostdom{$id}=$domain;
14439: if ($role eq 'library') { $libserv{$id}=$name; }
14440: if (defined($protocol)) {
14441: if ($protocol eq 'https') {
14442: $protocol{$id} = $protocol;
14443: } else {
14444: $protocol{$id} = 'http';
14445: }
14446: } else {
14447: $protocol{$id} = 'http';
14448: }
14449: if (defined($intdom)) {
14450: $internetdom{$id} = $intdom;
14451: }
14452: }
14453: }
14454: }
14455:
14456: sub reset_hosts_info {
14457: &purge_remembered();
14458: &reset_domain_info();
14459: &reset_hosts_ip_info();
14460: undef(%internetdom);
14461: undef(%name_to_host);
14462: undef(%hostname);
14463: undef(%hostdom);
14464: undef(%libserv);
14465: undef($loaded);
14466: }
14467:
14468: sub load_hosts_tab {
14469: my ($ignore_cache,$nocache) = @_;
14470: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache,$nocache);
14471: open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab");
14472: my @config = <$config>;
14473: &parse_hosts_tab(\@config);
14474: close($config);
14475: $loaded=1;
14476: }
14477:
14478: sub hostname {
14479: &load_hosts_tab() if (!$loaded);
14480:
14481: my ($lonid) = @_;
14482: return $hostname{$lonid};
14483: }
14484:
14485: sub all_hostnames {
14486: &load_hosts_tab() if (!$loaded);
14487:
14488: return %hostname;
14489: }
14490:
14491: sub all_names {
14492: my ($ignore_cache,$nocache) = @_;
14493: &load_hosts_tab($ignore_cache,$nocache) if (!$loaded);
14494:
14495: return %name_to_host;
14496: }
14497:
14498: sub all_host_domain {
14499: &load_hosts_tab() if (!$loaded);
14500: return %hostdom;
14501: }
14502:
14503: sub all_host_intdom {
14504: &load_hosts_tab() if (!$loaded);
14505: return %internetdom;
14506: }
14507:
14508: sub is_library {
14509: &load_hosts_tab() if (!$loaded);
14510:
14511: return exists($libserv{$_[0]});
14512: }
14513:
14514: sub all_library {
14515: &load_hosts_tab() if (!$loaded);
14516:
14517: return %libserv;
14518: }
14519:
14520: sub unique_library {
14521: #2x reverse removes all hostnames that appear more than once
14522: my %unique = reverse &all_library();
14523: return reverse %unique;
14524: }
14525:
14526: sub get_servers {
14527: &load_hosts_tab() if (!$loaded);
14528:
14529: my ($domain,$type) = @_;
14530: my %possible_hosts = ($type eq 'library') ? %libserv
14531: : %hostname;
14532: my %result;
14533: if (ref($domain) eq 'ARRAY') {
14534: while ( my ($host,$hostname) = each(%possible_hosts)) {
14535: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
14536: $result{$host} = $hostname;
14537: }
14538: }
14539: } else {
14540: while ( my ($host,$hostname) = each(%possible_hosts)) {
14541: if ($hostdom{$host} eq $domain) {
14542: $result{$host} = $hostname;
14543: }
14544: }
14545: }
14546: return %result;
14547: }
14548:
14549: sub get_unique_servers {
14550: my %unique = reverse &get_servers(@_);
14551: return reverse %unique;
14552: }
14553:
14554: sub host_domain {
14555: &load_hosts_tab() if (!$loaded);
14556:
14557: my ($lonid) = @_;
14558: return $hostdom{$lonid};
14559: }
14560:
14561: sub all_domains {
14562: &load_hosts_tab() if (!$loaded);
14563:
14564: my %seen;
14565: my @uniq = grep(!$seen{$_}++, values(%hostdom));
14566: return @uniq;
14567: }
14568:
14569: sub internet_dom {
14570: &load_hosts_tab() if (!$loaded);
14571:
14572: my ($lonid) = @_;
14573: return $internetdom{$lonid};
14574: }
14575:
14576: sub is_LC_dns {
14577: &load_hosts_tab() if (!$loaded);
14578:
14579: my ($hostname) = @_;
14580: return exists($LC_dns_serv{$hostname});
14581: }
14582:
14583: }
14584:
14585: {
14586: my %iphost;
14587: my %name_to_ip;
14588: my %lonid_to_ip;
14589:
14590: sub get_hosts_from_ip {
14591: my ($ip) = @_;
14592: my %iphosts = &get_iphost();
14593: if (ref($iphosts{$ip})) {
14594: return @{$iphosts{$ip}};
14595: }
14596: return;
14597: }
14598:
14599: sub reset_hosts_ip_info {
14600: undef(%iphost);
14601: undef(%name_to_ip);
14602: undef(%lonid_to_ip);
14603: }
14604:
14605: sub get_host_ip {
14606: my ($lonid) = @_;
14607: if (exists($lonid_to_ip{$lonid})) {
14608: return $lonid_to_ip{$lonid};
14609: }
14610: my $name=&hostname($lonid);
14611: my $ip = gethostbyname($name);
14612: return if (!$ip || length($ip) ne 4);
14613: $ip=inet_ntoa($ip);
14614: $name_to_ip{$name} = $ip;
14615: $lonid_to_ip{$lonid} = $ip;
14616: return $ip;
14617: }
14618:
14619: sub get_iphost {
14620: my ($ignore_cache,$nocache) = @_;
14621:
14622: if (!$ignore_cache) {
14623: if (%iphost) {
14624: return %iphost;
14625: }
14626: my ($ip_info,$cached)=
14627: &Apache::lonnet::is_cached_new('iphost','iphost');
14628: if ($cached) {
14629: %iphost = %{$ip_info->[0]};
14630: %name_to_ip = %{$ip_info->[1]};
14631: %lonid_to_ip = %{$ip_info->[2]};
14632: return %iphost;
14633: }
14634: }
14635:
14636: # get yesterday's info for fallback
14637: my %old_name_to_ip;
14638: my ($ip_info,$cached)=
14639: &Apache::lonnet::is_cached_new('iphost','iphost');
14640: if ($cached) {
14641: %old_name_to_ip = %{$ip_info->[1]};
14642: }
14643:
14644: my %name_to_host = &all_names($ignore_cache,$nocache);
14645: foreach my $name (keys(%name_to_host)) {
14646: my $ip;
14647: if (!exists($name_to_ip{$name})) {
14648: $ip = gethostbyname($name);
14649: if (!$ip || length($ip) ne 4) {
14650: if (defined($old_name_to_ip{$name})) {
14651: $ip = $old_name_to_ip{$name};
14652: &logthis("Can't find $name defaulting to old $ip");
14653: } else {
14654: &logthis("Name $name no IP found");
14655: next;
14656: }
14657: } else {
14658: $ip=inet_ntoa($ip);
14659: }
14660: $name_to_ip{$name} = $ip;
14661: } else {
14662: $ip = $name_to_ip{$name};
14663: }
14664: foreach my $id (@{ $name_to_host{$name} }) {
14665: $lonid_to_ip{$id} = $ip;
14666: }
14667: push(@{$iphost{$ip}},@{$name_to_host{$name}});
14668: }
14669: unless ($nocache) {
14670: &do_cache_new('iphost','iphost',
14671: [\%iphost,\%name_to_ip,\%lonid_to_ip],
14672: 48*60*60);
14673: }
14674:
14675: return %iphost;
14676: }
14677:
14678: #
14679: # Given a DNS returns the loncapa host name for that DNS
14680: #
14681: sub host_from_dns {
14682: my ($dns) = @_;
14683: my @hosts;
14684: my $ip;
14685:
14686: if (exists($name_to_ip{$dns})) {
14687: $ip = $name_to_ip{$dns};
14688: }
14689: if (!$ip) {
14690: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
14691: if (length($ip) == 4) {
14692: $ip = &IO::Socket::inet_ntoa($ip);
14693: }
14694: }
14695: if ($ip) {
14696: @hosts = get_hosts_from_ip($ip);
14697: return $hosts[0];
14698: }
14699: return undef;
14700: }
14701:
14702: sub get_internet_names {
14703: my ($lonid) = @_;
14704: return if ($lonid eq '');
14705: my ($idnref,$cached)=
14706: &Apache::lonnet::is_cached_new('internetnames',$lonid);
14707: if ($cached) {
14708: return $idnref;
14709: }
14710: my $ip = &get_host_ip($lonid);
14711: my @hosts = &get_hosts_from_ip($ip);
14712: my %iphost = &get_iphost();
14713: my (@idns,%seen);
14714: foreach my $id (@hosts) {
14715: my $dom = &host_domain($id);
14716: my $prim_id = &domain($dom,'primary');
14717: my $prim_ip = &get_host_ip($prim_id);
14718: next if ($seen{$prim_ip});
14719: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
14720: foreach my $id (@{$iphost{$prim_ip}}) {
14721: my $intdom = &internet_dom($id);
14722: unless (grep(/^\Q$intdom\E$/,@idns)) {
14723: push(@idns,$intdom);
14724: }
14725: }
14726: }
14727: $seen{$prim_ip} = 1;
14728: }
14729: return &do_cache_new('internetnames',$lonid,\@idns,12*60*60);
14730: }
14731:
14732: }
14733:
14734: sub all_loncaparevs {
14735: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11);
14736: }
14737:
14738: # ---------------------------------------------------------- Read loncaparev table
14739: {
14740: sub load_loncaparevs {
14741: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
14742: if (open(my $config,"<","$perlvar{'lonTabDir'}/loncaparevs.tab")) {
14743: while (my $configline=<$config>) {
14744: chomp($configline);
14745: my ($hostid,$loncaparev)=split(/:/,$configline);
14746: $loncaparevs{$hostid}=$loncaparev;
14747: }
14748: close($config);
14749: }
14750: }
14751: }
14752: }
14753:
14754: # ---------------------------------------------------------- Read serverhostID table
14755: {
14756: sub load_serverhomeIDs {
14757: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
14758: if (open(my $config,"<","$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
14759: while (my $configline=<$config>) {
14760: chomp($configline);
14761: my ($name,$id)=split(/:/,$configline);
14762: $serverhomeIDs{$name}=$id;
14763: }
14764: close($config);
14765: }
14766: }
14767: }
14768: }
14769:
14770:
14771: BEGIN {
14772:
14773: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
14774: unless ($readit) {
14775: {
14776: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
14777: %perlvar = (%perlvar,%{$configvars});
14778: }
14779:
14780:
14781: # ------------------------------------------------------ Read spare server file
14782: {
14783: open(my $config,"<","$perlvar{'lonTabDir'}/spare.tab");
14784:
14785: while (my $configline=<$config>) {
14786: chomp($configline);
14787: if ($configline) {
14788: my ($host,$type) = split(':',$configline,2);
14789: if (!defined($type) || $type eq '') { $type = 'default' };
14790: push(@{ $spareid{$type} }, $host);
14791: }
14792: }
14793: close($config);
14794: }
14795: # ------------------------------------------------------------ Read permissions
14796: {
14797: open(my $config,"<","$perlvar{'lonTabDir'}/roles.tab");
14798:
14799: while (my $configline=<$config>) {
14800: chomp($configline);
14801: if ($configline) {
14802: my ($role,$perm)=split(/ /,$configline);
14803: if ($perm ne '') { $pr{$role}=$perm; }
14804: }
14805: }
14806: close($config);
14807: }
14808:
14809: # -------------------------------------------- Read plain texts for permissions
14810: {
14811: open(my $config,"<","$perlvar{'lonTabDir'}/rolesplain.tab");
14812:
14813: while (my $configline=<$config>) {
14814: chomp($configline);
14815: if ($configline) {
14816: my ($short,@plain)=split(/:/,$configline);
14817: %{$prp{$short}} = ();
14818: if (@plain > 0) {
14819: $prp{$short}{'std'} = $plain[0];
14820: for (my $i=1; $i<@plain; $i++) {
14821: $prp{$short}{'alt'.$i} = $plain[$i];
14822: }
14823: }
14824: }
14825: }
14826: close($config);
14827: }
14828:
14829: # ---------------------------------------------------------- Read package table
14830: {
14831: open(my $config,"<","$perlvar{'lonTabDir'}/packages.tab");
14832:
14833: while (my $configline=<$config>) {
14834: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
14835: chomp($configline);
14836: my ($short,$plain)=split(/:/,$configline);
14837: my ($pack,$name)=split(/\&/,$short);
14838: if ($plain ne '') {
14839: $packagetab{$pack.'&'.$name.'&name'}=$name;
14840: $packagetab{$short}=$plain;
14841: }
14842: }
14843: close($config);
14844: }
14845:
14846: # ---------------------------------------------------------- Read loncaparev table
14847:
14848: &load_loncaparevs();
14849:
14850: # ---------------------------------------------------------- Read serverhostID table
14851:
14852: &load_serverhomeIDs();
14853:
14854: # ---------------------------------------------------------- Read releaseslist XML
14855: {
14856: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
14857: if (-e $file) {
14858: my $parser = HTML::LCParser->new($file);
14859: while (my $token = $parser->get_token()) {
14860: if ($token->[0] eq 'S') {
14861: my $item = $token->[1];
14862: my $name = $token->[2]{'name'};
14863: my $value = $token->[2]{'value'};
14864: my $valuematch = $token->[2]{'valuematch'};
14865: my $namematch = $token->[2]{'namematch'};
14866: if ($item eq 'parameter') {
14867: if (($namematch ne '') || (($name ne '') && ($value ne '' || $valuematch ne ''))) {
14868: my $release = $parser->get_text();
14869: $release =~ s/(^\s*|\s*$ )//gx;
14870: $needsrelease{$item.':'.$name.':'.$value.':'.$valuematch.':'.$namematch} = $release;
14871: }
14872: } elsif ($item ne '' && $name ne '') {
14873: my $release = $parser->get_text();
14874: $release =~ s/(^\s*|\s*$ )//gx;
14875: $needsrelease{$item.':'.$name.':'.$value} = $release;
14876: }
14877: }
14878: }
14879: }
14880: }
14881:
14882: # ---------------------------------------------------------- Read managers table
14883: {
14884: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
14885: if (open(my $config,"<","$perlvar{'lonTabDir'}/managers.tab")) {
14886: while (my $configline=<$config>) {
14887: chomp($configline);
14888: next if ($configline =~ /^\#/);
14889: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
14890: $managerstab{$configline} = 1;
14891: }
14892: }
14893: close($config);
14894: }
14895: }
14896: }
14897:
14898: # ------------- set up temporary directory
14899: {
14900: $tmpdir = LONCAPA::tempdir();
14901:
14902: }
14903:
14904: # ------------- set default texengine (domain default overrides this)
14905: {
14906: $deftex = LONCAPA::texengine();
14907: }
14908:
14909: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
14910: 'compress_threshold'=> 20_000,
14911: });
14912:
14913: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
14914: $dumpcount=0;
14915: $locknum=0;
14916:
14917: &logtouch();
14918: &logthis('<font color="yellow">INFO: Read configuration</font>');
14919: $readit=1;
14920: {
14921: use integer;
14922: my $test=(2**32)+1;
14923: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
14924: &logthis(" Detected 64bit platform ($_64bit)");
14925: }
14926: }
14927: }
14928:
14929: 1;
14930: __END__
14931:
14932: =pod
14933:
14934: =head1 NAME
14935:
14936: Apache::lonnet - Subroutines to ask questions about things in the network.
14937:
14938: =head1 SYNOPSIS
14939:
14940: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
14941:
14942: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
14943:
14944: Common parameters:
14945:
14946: =over 4
14947:
14948: =item *
14949:
14950: $uname : an internal username (if $cname expecting a course Id specifically)
14951:
14952: =item *
14953:
14954: $udom : a domain (if $cdom expecting a course's domain specifically)
14955:
14956: =item *
14957:
14958: $symb : a resource instance identifier
14959:
14960: =item *
14961:
14962: $namespace : the name of a .db file that contains the data needed or
14963: being set.
14964:
14965: =back
14966:
14967: =head1 OVERVIEW
14968:
14969: lonnet provides subroutines which interact with the
14970: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
14971: about classes, users, and resources.
14972:
14973: For many of these objects you can also use this to store data about
14974: them or modify them in various ways.
14975:
14976: =head2 Symbs
14977:
14978: To identify a specific instance of a resource, LON-CAPA uses symbols
14979: or "symbs"X<symb>. These identifiers are built from the URL of the
14980: map, the resource number of the resource in the map, and the URL of
14981: the resource itself. The latter is somewhat redundant, but might help
14982: if maps change.
14983:
14984: An example is
14985:
14986: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
14987:
14988: The respective map entry is
14989:
14990: <resource id="19" src="/res/msu/korte/tests/part12.problem"
14991: title="Problem 2">
14992: </resource>
14993:
14994: Symbs are used by the random number generator, as well as to store and
14995: restore data specific to a certain instance of for example a problem.
14996:
14997: =head2 Storing And Retrieving Data
14998:
14999: X<store()>X<cstore()>X<restore()>Three of the most important functions
15000: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
15001: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
15002: is is the non-critical message twin of cstore. These functions are for
15003: handlers to store a perl hash to a user's permanent data space in an
15004: easy manner, and to retrieve it again on another call. It is expected
15005: that a handler would use this once at the beginning to retrieve data,
15006: and then again once at the end to send only the new data back.
15007:
15008: The data is stored in the user's data directory on the user's
15009: homeserver under the ID of the course.
15010:
15011: The hash that is returned by restore will have all of the previous
15012: value for all of the elements of the hash.
15013:
15014: Example:
15015:
15016: #creating a hash
15017: my %hash;
15018: $hash{'foo'}='bar';
15019:
15020: #storing it
15021: &Apache::lonnet::cstore(\%hash);
15022:
15023: #changing a value
15024: $hash{'foo'}='notbar';
15025:
15026: #adding a new value
15027: $hash{'bar'}='foo';
15028: &Apache::lonnet::cstore(\%hash);
15029:
15030: #retrieving the hash
15031: my %history=&Apache::lonnet::restore();
15032:
15033: #print the hash
15034: foreach my $key (sort(keys(%history))) {
15035: print("\%history{$key} = $history{$key}");
15036: }
15037:
15038: Will print out:
15039:
15040: %history{1:foo} = bar
15041: %history{1:keys} = foo:timestamp
15042: %history{1:timestamp} = 990455579
15043: %history{2:bar} = foo
15044: %history{2:foo} = notbar
15045: %history{2:keys} = foo:bar:timestamp
15046: %history{2:timestamp} = 990455580
15047: %history{bar} = foo
15048: %history{foo} = notbar
15049: %history{timestamp} = 990455580
15050: %history{version} = 2
15051:
15052: Note that the special hash entries C<keys>, C<version> and
15053: C<timestamp> were added to the hash. C<version> will be equal to the
15054: total number of versions of the data that have been stored. The
15055: C<timestamp> attribute will be the UNIX time the hash was
15056: stored. C<keys> is available in every historical section to list which
15057: keys were added or changed at a specific historical revision of a
15058: hash.
15059:
15060: B<Warning>: do not store the hash that restore returns directly. This
15061: will cause a mess since it will restore the historical keys as if the
15062: were new keys. I.E. 1:foo will become 1:1:foo etc.
15063:
15064: Calling convention:
15065:
15066: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
15067: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$laststore);
15068:
15069: For more detailed information, see lonnet specific documentation.
15070:
15071: =head1 RETURN MESSAGES
15072:
15073: =over 4
15074:
15075: =item * B<con_lost>: unable to contact remote host
15076:
15077: =item * B<con_delayed>: unable to contact remote host, message will be delivered
15078: when the connection is brought back up
15079:
15080: =item * B<con_failed>: unable to contact remote host and unable to save message
15081: for later delivery
15082:
15083: =item * B<error:>: an error a occurred, a description of the error follows the :
15084:
15085: =item * B<no_such_host>: unable to fund a host associated with the user/domain
15086: that was requested
15087:
15088: =back
15089:
15090: =head1 PUBLIC SUBROUTINES
15091:
15092: =head2 Session Environment Functions
15093:
15094: =over 4
15095:
15096: =item *
15097: X<appenv()>
15098: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
15099: the user envirnoment file, and will be restored for each access this
15100: user makes during this session, also modifies the %env for the current
15101: process. Optional rolesarrayref - if defined contains a reference to an array
15102: of roles which are exempt from the restriction on modifying user.role entries
15103: in the user's environment.db and in %env.
15104:
15105: =item *
15106: X<delenv()>
15107: B<delenv($delthis,$regexp)>: removes all items from the session
15108: environment file that begin with $delthis. If the
15109: optional second arg - $regexp - is true, $delthis is treated as a
15110: regular expression, otherwise \Q$delthis\E is used.
15111: The values are also deleted from the current processes %env.
15112:
15113: =item * get_env_multiple($name)
15114:
15115: gets $name from the %env hash, it seemlessly handles the cases where multiple
15116: values may be defined and end up as an array ref.
15117:
15118: returns an array of values
15119:
15120: =back
15121:
15122: =head2 User Information
15123:
15124: =over 4
15125:
15126: =item *
15127: X<queryauthenticate()>
15128: B<queryauthenticate($uname,$udom)>: try to determine user's current
15129: authentication scheme
15130:
15131: =item *
15132: X<authenticate()>
15133: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
15134: authenticate user from domain's lib servers (first use the current
15135: one). C<$upass> should be the users password.
15136: $checkdefauth is optional (value is 1 if a check should be made to
15137: authenticate user using default authentication method, and allow
15138: account creation if username does not have account in the domain).
15139: $clientcancheckhost is optional (value is 1 if checking whether the
15140: server can host will occur on the client side in lonauth.pm).
15141:
15142: =item *
15143: X<homeserver()>
15144: B<homeserver($uname,$udom)>: find the server which has
15145: the user's directory and files (there must be only one), this caches
15146: the answer, and also caches if there is a borken connection.
15147:
15148: =item *
15149: X<idget()>
15150: B<idget($udom,$idsref,$namespace)>: find the usernames behind either
15151: a list of student/employee IDs or clicker IDs
15152: (student/employee IDs are a unique resource in a domain, there must be
15153: only 1 ID per username, and only 1 username per ID in a specific domain).
15154: clickerIDs are not necessarily unique, as students might share clickers.
15155: (returns hash: id=>name,id=>name)
15156:
15157: =item *
15158: X<idrget()>
15159: B<idrget($udom,@unames)>: find the IDs behind a list of
15160: usernames (returns hash: name=>id,name=>id)
15161:
15162: =item *
15163: X<idput()>
15164: B<idput($udom,$idsref,$uhome,$namespace)>: store away a list of
15165: names and associated student/employee IDs or clicker IDs.
15166:
15167: =item *
15168: X<iddel()>
15169: B<iddel($udom,$idshashref,$uhome,$namespace)>: delete unwanted
15170: student/employee ID or clicker ID username look-ups from domain.
15171: The homeserver ($uhome) and namespace ($namespace) are optional.
15172: If no $uhome is provided, it will be determined usig &homeserver()
15173: for each user. If no $namespace is provided, the default is ids.
15174:
15175: =item *
15176: X<updateclickers()>
15177: B<updateclickers($udom,$action,$idshashref,$uhome,$critical)>: update
15178: clicker ID-to-username look-ups in clickers.db on library server.
15179: Permitted actions are add or del (i.e., add or delete). The
15180: clickers.db contains clickerID as keys (escaped), and each corresponding
15181: value is an escaped comma-separated list of usernames (for whom the
15182: library server is the homeserver), who registered that particular ID.
15183: If $critical is true, the update will be sent via &critical, otherwise
15184: &reply() will be used.
15185:
15186: =item *
15187: X<rolesinit()>
15188: B<rolesinit($udom,$username)>: get user privileges.
15189: returns user role, first access and timer interval hashes
15190:
15191: =item *
15192: X<privileged()>
15193: B<privileged($username,$domain)>: returns a true if user has a
15194: privileged and active role (i.e. su or dc), false otherwise.
15195:
15196: =item *
15197: X<getsection()>
15198: B<getsection($udom,$uname,$cname)>: finds the section of student in the
15199: course $cname, return section name/number or '' for "not in course"
15200: and '-1' for "no section"
15201:
15202: =item *
15203: X<userenvironment()>
15204: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
15205: passed in @what from the requested user's environment, returns a hash
15206:
15207: =item *
15208: X<userlog_query()>
15209: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
15210: activity.log file. %filters defines filters applied when parsing the
15211: log file. These can be start or end timestamps, or the type of action
15212: - log to look for Login or Logout events, check for Checkin or
15213: Checkout, role for role selection. The response is in the form
15214: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
15215: escaped strings of the action recorded in the activity.log file.
15216:
15217: =back
15218:
15219: =head2 User Roles
15220:
15221: =over 4
15222:
15223: =item *
15224:
15225: allowed($priv,$uri,$symb,$role,$clientip,$noblockcheck) : check for a user privilege;
15226: returns codes for allowed actions.
15227:
15228: The first argument is required, all others are optional.
15229:
15230: $priv is the privilege being checked.
15231: $uri contains additional information about what is being checked for access (e.g.,
15232: URL, course ID etc.).
15233: $symb is the unique resource instance identifier in a course; if needed,
15234: but not provided, it will be retrieved via a call to &symbread().
15235: $role is the role for which a priv is being checked (only used if priv is evb).
15236: $clientip is the user's IP address (only used when checking for access to portfolio
15237: files).
15238: $noblockcheck, if true, skips calls to &has_comm_blocking() for the bre priv. This
15239: prevents recursive calls to &allowed.
15240:
15241: F: full access
15242: U,I,K: authentication modes (cxx only)
15243: '': forbidden
15244: 1: user needs to choose course
15245: 2: browse allowed
15246: A: passphrase authentication needed
15247: B: access temporarily blocked because of a blocking event in a course.
15248: D: access blocked because access is required via session initiated via deep-link
15249:
15250: =item *
15251:
15252: constructaccess($url,$setpriv) : check for access to construction space URL
15253:
15254: See if the owner domain and name in the URL match those in the
15255: expected environment. If so, return three element list
15256: ($ownername,$ownerdomain,$ownerhome).
15257:
15258: Otherwise return the null string.
15259:
15260: If second argument 'setpriv' is true, it assigns the privileges,
15261: and returns the same three element list, unless the owner has
15262: blocked "ad hoc" Domain Coordinator access to the Author Space,
15263: in which case the null string is returned.
15264:
15265: =item *
15266:
15267: definerole($rolename,$sysrole,$domrole,$courole,$uname,$udom) : define role;
15268: define a custom role rolename set privileges in format of lonTabs/roles.tab
15269: for system, domain, and course level. $uname and $udom are optional (current
15270: user's username and domain will be used when either of $uname or $udom are absent.
15271:
15272: =item *
15273:
15274: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
15275: (rolesplain.tab); plain text explanation of a user role term.
15276: $type is Course (default) or Community.
15277: If $forcedefault evaluates to true, text returned will be default
15278: text for $type. Otherwise, if this is a course, the text returned
15279: will be a custom name for the role (if defined in the course's
15280: environment). If no custom name is defined the default is returned.
15281:
15282: =item *
15283:
15284: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
15285: All arguments are optional. Returns a hash of a roles, either for
15286: co-author/assistant author roles for a user's Construction Space
15287: (default), or if $context is 'userroles', roles for the user himself,
15288: In the hash, keys are set to colon-separated $uname,$udom,$role, and
15289: (optionally) if $withsec is true, a fourth colon-separated item - $section.
15290: For each key, value is set to colon-separated start and end times for
15291: the role. If no username and domain are specified, will default to
15292: current user/domain. Types, roles, and roledoms are references to arrays
15293: of role statuses (active, future or previous), roles
15294: (e.g., cc,in, st etc.) and domains of the roles which can be used
15295: to restrict the list of roles reported. If no array ref is
15296: provided for types, will default to return only active roles.
15297:
15298: =item *
15299:
15300: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
15301: user: $uname:$udom has a role in the course: $cdom_$cnum.
15302:
15303: Additional optional arguments are: $type (if role checking is to be restricted
15304: to certain user status types -- previous (expired roles), active (currently
15305: available roles) or future (roles available in the future), and
15306: $hideprivileged -- if true will not report course roles for users who
15307: have active Domain Coordinator role in course's domain or in additional
15308: domains (specified in 'Domains to check for privileged users' in course
15309: environment -- set via: Course Settings -> Classlists and staff listing).
15310:
15311: =item *
15312:
15313: privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
15314: $username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
15315: $possdomains and $possroles are optional array refs -- to domains to check and
15316: roles to check. If $possdomains is not specified, a dump will be done of the
15317: users' roles.db to check for a dc or su role in any domain. This can be
15318: time consuming if &privileged is called repeatedly (e.g., when displaying a
15319: classlist), so in such cases, supplying a $possdomains array is preferred, as
15320: this then allows &privileged_by_domain() to be used, which caches the identity
15321: of privileged users, eliminating the need for repeated calls to &dump().
15322:
15323: =item *
15324:
15325: privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
15326: where the outer hash keys are domains specified in the $possdomains array ref,
15327: next inner hash keys are privileged roles specified in the $roles array ref,
15328: and the innermost hash contains key = value pairs for username:domain = end:start
15329: for active or future "privileged" users with that role in that domain. To avoid
15330: repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
15331: innerhash are cached using priv_$role and $dom as the identifiers.
15332:
15333: =back
15334:
15335: =head2 User Modification
15336:
15337: =over 4
15338:
15339: =item *
15340:
15341: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
15342: user for the level given by URL. Optional start and end dates (leave empty
15343: string or zero for "no date")
15344:
15345: =item *
15346:
15347: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
15348: change a users, password, possible return values are: ok,
15349: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
15350: refused
15351:
15352: =item *
15353:
15354: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
15355:
15356: =item *
15357:
15358: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
15359: $forceid,$desiredhome,$email,$inststatus,$candelete) :
15360:
15361: will update user information (firstname,middlename,lastname,generation,
15362: permanentemail), and if forceid is true, student/employee ID also.
15363: A user's institutional affiliation(s) can also be updated.
15364: User information fields will not be overwritten with empty entries
15365: unless the field is included in the $candelete array reference.
15366: This array is included when a single user is modified via "Manage Users",
15367: or when Autoupdate.pl is run by cron in a domain.
15368:
15369: =item *
15370:
15371: modifystudent
15372:
15373: modify a student's enrollment and identification information.
15374: The course id is resolved based on the current user's environment.
15375: This means the invoking user must be a course coordinator or otherwise
15376: associated with a course.
15377:
15378: This call is essentially a wrapper for lonnet::modifyuser and
15379: lonnet::modify_student_enrollment
15380:
15381: Inputs:
15382:
15383: =over 4
15384:
15385: =item B<$udom> Student's loncapa domain
15386:
15387: =item B<$uname> Student's loncapa login name
15388:
15389: =item B<$uid> Student/Employee ID
15390:
15391: =item B<$umode> Student's authentication mode
15392:
15393: =item B<$upass> Student's password
15394:
15395: =item B<$first> Student's first name
15396:
15397: =item B<$middle> Student's middle name
15398:
15399: =item B<$last> Student's last name
15400:
15401: =item B<$gene> Student's generation
15402:
15403: =item B<$usec> Student's section in course
15404:
15405: =item B<$end> Unix time of the roles expiration
15406:
15407: =item B<$start> Unix time of the roles start date
15408:
15409: =item B<$forceid> If defined, allow $uid to be changed
15410:
15411: =item B<$desiredhome> server to use as home server for student
15412:
15413: =item B<$email> Student's permanent e-mail address
15414:
15415: =item B<$type> Type of enrollment (auto or manual)
15416:
15417: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
15418:
15419: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
15420:
15421: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
15422:
15423: =item B<$context> role change context (shown in User Management Logs display in a course)
15424:
15425: =item B<$inststatus> institutional status of user - : separated string of escaped status types
15426:
15427: =item B<$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.
15428:
15429: =back
15430:
15431: =item *
15432:
15433: modify_student_enrollment
15434:
15435: Change a student's enrollment status in a class. The environment variable
15436: 'role.request.course' must be defined for this function to proceed.
15437:
15438: Inputs:
15439:
15440: =over 4
15441:
15442: =item $udom, student's domain
15443:
15444: =item $uname, student's name
15445:
15446: =item $uid, student's user id
15447:
15448: =item $first, student's first name
15449:
15450: =item $middle
15451:
15452: =item $last
15453:
15454: =item $gene
15455:
15456: =item $usec
15457:
15458: =item $end
15459:
15460: =item $start
15461:
15462: =item $type
15463:
15464: =item $locktype
15465:
15466: =item $cid
15467:
15468: =item $selfenroll
15469:
15470: =item $context
15471:
15472: =item $credits, number of credits student will earn from this class
15473:
15474: =item $instsec, institutional course section code for student
15475:
15476: =back
15477:
15478:
15479: =item *
15480:
15481: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
15482: custom role; give a custom role to a user for the level given by URL. Specify
15483: name and domain of role author, and role name
15484:
15485: =item *
15486:
15487: revokerole($udom,$uname,$url,$role) : revoke a role for url
15488:
15489: =item *
15490:
15491: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
15492:
15493: =back
15494:
15495: =head2 Course Infomation
15496:
15497: =over 4
15498:
15499: =item *
15500:
15501: coursedescription($courseid,$options) : returns a hash of information about the
15502: specified course id, including all environment settings for the
15503: course, the description of the course will be in the hash under the
15504: key 'description'
15505:
15506: $options is an optional parameter that if supplied is a hash reference that controls
15507: what how this function works. It has the following key/values:
15508:
15509: =over 4
15510:
15511: =item freshen_cache
15512:
15513: If defined, and the environment cache for the course is valid, it is
15514: returned in the returned hash.
15515:
15516: =item one_time
15517:
15518: If defined, the last cache time is set to _now_
15519:
15520: =item user
15521:
15522: If defined, the supplied username is used instead of the current user.
15523:
15524:
15525: =back
15526:
15527: =item *
15528:
15529: resdata($name,$domain,$type,@which) : request for current parameter
15530: setting for a specific $type, where $type is either 'course' or 'user',
15531: @what should be a list of parameters to ask about. This routine caches
15532: answers for 10 minutes.
15533:
15534: =item *
15535:
15536: get_courseresdata($courseid, $domain) : dump the entire course resource
15537: data base, returning a hash that is keyed by the resource name and has
15538: values that are the resource value. I believe that the timestamps and
15539: versions are also returned.
15540:
15541: get_numsuppfiles($cnum,$cdom) : retrieve number of files in a course's
15542: supplemental content area. This routine caches the number of files for
15543: 10 minutes.
15544:
15545: =back
15546:
15547: =head2 Course Modification
15548:
15549: =over 4
15550:
15551: =item *
15552:
15553: writecoursepref($courseid,%prefs) : write preferences (environment
15554: database) for a course
15555:
15556: =item *
15557:
15558: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
15559:
15560: =item *
15561:
15562: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
15563:
15564: =item *
15565:
15566: is_course($courseid), is_course($cdom, $cnum)
15567:
15568: Accepts either a combined $courseid (in the form of domain_courseid) or the
15569: two component version $cdom, $cnum. It checks if the specified course exists.
15570:
15571: Returns:
15572: undef if the course doesn't exist, otherwise
15573: in scalar context the combined courseid.
15574: in list context the two components of the course identifier, domain and
15575: courseid.
15576:
15577: =back
15578:
15579: =head2 Bubblesheet Configuration
15580:
15581: =over 4
15582:
15583: =item *
15584:
15585: get_scantron_config($which)
15586:
15587: $which - the name of the configuration to parse from the file.
15588:
15589: Parses and returns the bubblesheet configuration line selected as a
15590: hash of configuration file fields.
15591:
15592:
15593: Returns:
15594: If the named configuration is not in the file, an empty
15595: hash is returned.
15596:
15597: a hash with the fields
15598: name - internal name for the this configuration setup
15599: description - text to display to operator that describes this config
15600: CODElocation - if 0 or the string 'none'
15601: - no CODE exists for this config
15602: if -1 || the string 'letter'
15603: - a CODE exists for this config and is
15604: a string of letters
15605: Unsupported value (but planned for future support)
15606: if a positive integer
15607: - The CODE exists as the first n items from
15608: the question section of the form
15609: if the string 'number'
15610: - The CODE exists for this config and is
15611: a string of numbers
15612: CODEstart - (only matter if a CODE exists) column in the line where
15613: the CODE starts
15614: CODElength - length of the CODE
15615: IDstart - column where the student/employee ID starts
15616: IDlength - length of the student/employee ID info
15617: Qstart - column where the information from the bubbled
15618: 'questions' start
15619: Qlength - number of columns comprising a single bubble line from
15620: the sheet. (usually either 1 or 10)
15621: Qon - either a single character representing the character used
15622: to signal a bubble was chosen in the positional setup, or
15623: the string 'letter' if the letter of the chosen bubble is
15624: in the final, or 'number' if a number representing the
15625: chosen bubble is in the file (1->A 0->J)
15626: Qoff - the character used to represent that a bubble was
15627: left blank
15628: PaperID - if the scanning process generates a unique number for each
15629: sheet scanned the column that this ID number starts in
15630: PaperIDlength - number of columns that comprise the unique ID number
15631: for the sheet of paper
15632: FirstName - column that the first name starts in
15633: FirstNameLength - number of columns that the first name spans
15634: LastName - column that the last name starts in
15635: LastNameLength - number of columns that the last name spans
15636: BubblesPerRow - number of bubbles available in each row used to
15637: bubble an answer. (If not specified, 10 assumed).
15638:
15639:
15640: =item *
15641:
15642: get_scantronformat_file($cdom)
15643:
15644: $cdom - the course's domain (optional); if not supplied, uses
15645: domain for current $env{'request.course.id'}.
15646:
15647: Returns an array containing lines from the scantron format file for
15648: the domain of the course.
15649:
15650: If a url for a custom.tab file is listed in domain's configuration.db,
15651: lines are from this file.
15652:
15653: Otherwise, if a default.tab has been published in RES space by the
15654: domainconfig user, lines are from this file.
15655:
15656: Otherwise, fall back to getting lines from the legacy file on the
15657: local server: /home/httpd/lonTabs/default_scantronformat.tab
15658:
15659: =back
15660:
15661: =head2 Resource Subroutines
15662:
15663: =over 4
15664:
15665: =item *
15666:
15667: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
15668:
15669: =item *
15670:
15671: repcopy($filename) : subscribes to the requested file, and attempts to
15672: replicate from the owning library server, Might return
15673: 'unavailable', 'not_found', 'forbidden', 'ok', or
15674: 'bad_request', also attempts to grab the metadata for the
15675: resource. Expects the local filesystem pathname
15676: (/home/httpd/html/res/....)
15677:
15678: =back
15679:
15680: =head2 Resource Information
15681:
15682: =over 4
15683:
15684: =item *
15685:
15686: EXT($varname,$symb,$udom,$uname,$usection,$recurse,$cid) : evaluates
15687: and returns the value of a variety of different possible values,
15688: $varname should be a request string, and the other parameters can be
15689: used to specify who and what one is asking about. Ordinarily, $cid
15690: does not need to be specified, as it is retrived from
15691: $env{'request.course.id'}, but &Apache::lonnet::EXT() is called
15692: within lonuserstate::loadmap() when initializing a course, before
15693: $env{'request.course.id'} has been set, so it needs to be provided
15694: in that one case.
15695:
15696: Possible values for $varname are environment.lastname (or other item
15697: from the envirnment hash), user.name (or someother aspect about the
15698: user), resource.0.maxtries (or some other part and parameter of a
15699: resource)
15700:
15701: =item *
15702:
15703: directcondval($number) : get current value of a condition; reads from a state
15704: string
15705:
15706: =item *
15707:
15708: condval($condidx) : value of condition index based on state
15709:
15710: =item *
15711:
15712: metadata($uri,$what,$toolsymb,$liburi,$prefix,$depthcount) : request a
15713: resource's metadata, $what should be either a specific key, or either
15714: 'keys' (to get a list of possible keys) or 'packages' to get a list of
15715: packages that this resource currently uses, the last 3 arguments are
15716: only used internally for recursive metadata.
15717:
15718: the toolsymb is only used where the uri is for an external tool (for which
15719: the uri as well as the symb are guaranteed to be unique).
15720:
15721: this function automatically caches all requests except any made recursively
15722: to retrieve a list of metadata keys for an imported library file ($liburi is
15723: defined).
15724:
15725: =item *
15726:
15727: metadata_query($query,$custom,$customshow) : make a metadata query against the
15728: network of library servers; returns file handle of where SQL and regex results
15729: will be stored for query
15730:
15731: =item *
15732:
15733: symbread($filename,$donotrecurse,$ignorecachednull,$checkforblock,$possibles) :
15734: return symbolic list entry (all arguments optional).
15735:
15736: Args: filename is the filename (including path) for the file for which a symb
15737: is required; donotrecurse, if true will prevent calls to allowed() being made
15738: to check access status if more than one resource was found in the bighash
15739: (see rev. 1.249) to avoid an infinite loop if an ambiguous resource is part of
15740: a randompick); ignorecachednull, if true will prevent a symb of '' being
15741: returned if $env{$cache_str} is defined as ''; checkforblock if true will
15742: cause possible symbs to be checked to determine if they are subject to content
15743: blocking, if so they will not be included as possible symbs; possibles is a
15744: ref to a hash, which, as a side effect, will be populated with all possible
15745: symbs (content blocking not tested).
15746:
15747: returns the data handle
15748:
15749: =item *
15750:
15751: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
15752: and is a possible symb for the URL in $thisfn, and if is an encrypted
15753: resource that the user accessed using /enc/ returns a 1 on success, 0
15754: on failure, user must be in a course, as it assumes the existence of
15755: the course initial hash, and uses $env('request.course.id'}. The third
15756: arg is an optional reference to a scalar. If this arg is passed in the
15757: call to symbverify, it will be set to 1 if the symb has been set to be
15758: encrypted; otherwise it will be null.
15759:
15760: =item *
15761:
15762: symbclean($symb) : removes versions numbers from a symb, returns the
15763: cleaned symb
15764:
15765: =item *
15766:
15767: is_on_map($uri) : checks if the $uri is somewhere on the current
15768: course map, user must be in a course for it to work.
15769:
15770: =item *
15771:
15772: numval($salt) : return random seed value (addend for rndseed)
15773:
15774: =item *
15775:
15776: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
15777: a random seed, all arguments are optional, if they aren't sent it uses the
15778: environment to derive them. Note: if symb isn't sent and it can't get one
15779: from &symbread it will use the current time as its return value
15780:
15781: =item *
15782:
15783: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
15784: unfakeable, receipt
15785:
15786: =item *
15787:
15788: receipt() : API to ireceipt working off of env values; given out to users
15789:
15790: =item *
15791:
15792: countacc($url) : count the number of accesses to a given URL
15793:
15794: =item *
15795:
15796: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
15797:
15798: =item *
15799:
15800: checkin($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 $tcrsid)
15801:
15802: =item *
15803:
15804: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
15805:
15806: =item *
15807:
15808: devalidate($symb) : devalidate temporary spreadsheet calculations,
15809: forcing spreadsheet to reevaluate the resource scores next time.
15810:
15811: =item *
15812:
15813: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
15814: when viewing in course context.
15815:
15816: input: six args -- filename (decluttered), course number, course domain,
15817: url, symb (if registered) and group (if this is a
15818: group item -- e.g., bulletin board, group page etc.).
15819:
15820: output: array of five scalars --
15821: $cfile -- url for file editing if editable on current server
15822: $home -- homeserver of resource (i.e., for author if published,
15823: or course if uploaded.).
15824: $switchserver -- 1 if server switch will be needed.
15825: $forceedit -- 1 if icon/link should be to go to edit mode
15826: $forceview -- 1 if icon/link should be to go to view mode
15827:
15828: =item *
15829:
15830: is_course_upload($file,$cnum,$cdom)
15831:
15832: Used in course context to determine if current file was uploaded to
15833: the course (i.e., would be found in /userfiles/docs on the course's
15834: homeserver.
15835:
15836: input: 3 args -- filename (decluttered), course number and course domain.
15837: output: boolean -- 1 if file was uploaded.
15838:
15839: =back
15840:
15841: =head2 Storing/Retreiving Data
15842:
15843: =over 4
15844:
15845: =item *
15846:
15847: store($storehash,$symb,$namespace,$udom,$uname,$laststore) : stores hash
15848: permanently for this url; hashref needs to be given and should be a \%hashname;
15849: the remaining args aren't required and if they aren't passed or are '' they will
15850: be derived from the env (with the exception of $laststore, which is an
15851: optional arg used when a user's submission is stored in grading).
15852: $laststore is $version=$timestamp, where $version is the most recent version
15853: number retrieved for the corresponding $symb in the $namespace db file, and
15854: $timestamp is the timestamp for that transaction (UNIX time).
15855: $laststore is currently only passed when cstore() is called by
15856: structuretags::finalize_storage().
15857:
15858: =item *
15859:
15860: cstore($storehash,$symb,$namespace,$udom,$uname,$laststore) : same as store
15861: but uses critical subroutine
15862:
15863: =item *
15864:
15865: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
15866: all args are optional
15867:
15868: =item *
15869:
15870: dumpstore($namespace,$udom,$uname,$regexp,$range) :
15871: dumps the complete (or key matching regexp) namespace into a hash
15872: ($udom, $uname, $regexp, $range are optional) for a namespace that is
15873: normally &store()ed into
15874:
15875: $range should be either an integer '100' (give me the first 100
15876: matching records)
15877: or be two integers sperated by a - with no spaces
15878: '30-50' (give me the 30th through the 50th matching
15879: records)
15880:
15881:
15882: =item *
15883:
15884: putstore($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog) :
15885: replaces a &store() version of data with a replacement set of data
15886: for a particular resource in a namespace passed in the $storehash hash
15887: reference. If $tolog is true, the transaction is logged in the courselog
15888: with an action=PUTSTORE.
15889:
15890: =item *
15891:
15892: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
15893: works very similar to store/cstore, but all data is stored in a
15894: temporary location and can be reset using tmpreset, $storehash should
15895: be a hash reference, returns nothing on success
15896:
15897: =item *
15898:
15899: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
15900: similar to restore, but all data is stored in a temporary location and
15901: can be reset using tmpreset. Returns a hash of values on success,
15902: error string otherwise.
15903:
15904: =item *
15905:
15906: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
15907: deltes all keys for $symb form the temporary storage hash.
15908:
15909: =item *
15910:
15911: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
15912: reference filled in from namesp ($udom and $uname are optional)
15913:
15914: =item *
15915:
15916: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
15917: namesp ($udom and $uname are optional)
15918:
15919: =item *
15920:
15921: dump($namespace,$udom,$uname,$regexp,$range) :
15922: dumps the complete (or key matching regexp) namespace into a hash
15923: ($udom, $uname, $regexp, $range are optional)
15924:
15925: $range should be either an integer '100' (give me the first 100
15926: matching records)
15927: or be two integers sperated by a - with no spaces
15928: '30-50' (give me the 30th through the 50th matching
15929: records)
15930: =item *
15931:
15932: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
15933: $store can be a scalar, an array reference, or if the amount to be
15934: incremented is > 1, a hash reference.
15935:
15936: ($udom and $uname are optional)
15937:
15938: =item *
15939:
15940: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
15941: ($udom and $uname are optional)
15942:
15943: =item *
15944:
15945: cput($namespace,$storehash,$udom,$uname) : critical put
15946: ($udom and $uname are optional)
15947:
15948: =item *
15949:
15950: newput($namespace,$storehash,$udom,$uname) :
15951:
15952: Attempts to store the items in the $storehash, but only if they don't
15953: currently exist, if this succeeds you can be certain that you have
15954: successfully created a new key value pair in the $namespace db.
15955:
15956:
15957: Args:
15958: $namespace: name of database to store values to
15959: $storehash: hashref to store to the db
15960: $udom: (optional) domain of user containing the db
15961: $uname: (optional) name of user caontaining the db
15962:
15963: Returns:
15964: 'ok' -> succeeded in storing all keys of $storehash
15965: 'key_exists: <key>' -> failed to anything out of $storehash, as at
15966: least <key> already existed in the db (other
15967: requested keys may also already exist)
15968: 'error: <msg>' -> unable to tie the DB or other error occurred
15969: 'con_lost' -> unable to contact request server
15970: 'refused' -> action was not allowed by remote machine
15971:
15972:
15973: =item *
15974:
15975: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
15976: reference filled in from namesp (encrypts the return communication)
15977: ($udom and $uname are optional)
15978:
15979: =item *
15980:
15981: log($udom,$name,$home,$message) : write to permanent log for user; use
15982: critical subroutine
15983:
15984: =item *
15985:
15986: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
15987: array reference filled in from namespace found in domain level on either
15988: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
15989:
15990: =item *
15991:
15992: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
15993: domain level either on specified domain server ($uhome) or primary domain
15994: server ($udom and $uhome are optional)
15995:
15996: =item *
15997:
15998: get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults
15999: for: authentication, language, quotas, timezone, date locale, and portal URL in
16000: the target domain.
16001:
16002: May also include additional key => value pairs for the following groups:
16003:
16004: =over
16005:
16006: =item
16007: disk quotas (MB allocated by default to portfolios and authoring spaces).
16008:
16009: =over
16010:
16011: =item defaultquota, authorquota
16012:
16013: =back
16014:
16015: =item
16016: tools (availability of aboutme page, blog, webDAV access for authoring spaces,
16017: portfolio for users).
16018:
16019: =over
16020:
16021: =item
16022: aboutme, blog, webdav, portfolio
16023:
16024: =back
16025:
16026: =item
16027: requestcourses: ability to request courses, and how requests are processed.
16028:
16029: =over
16030:
16031: =item
16032: official, unofficial, community, textbook, placement
16033:
16034: =back
16035:
16036: =item
16037: inststatus: types of institutional affiliation, and order in which they are displayed.
16038:
16039: =over
16040:
16041: =item
16042: inststatustypes, inststatusorder, inststatusguest
16043:
16044: =back
16045:
16046: =item
16047: coursedefaults: can PDF forms can be created, default credits for courses, default quotas (MB)
16048: for course's uploaded content.
16049:
16050: =over
16051:
16052: =item
16053: canuse_pdfforms, officialcredits, unofficialcredits, textbookcredits, officialquota, unofficialquota,
16054: communityquota, textbookquota, placementquota
16055:
16056: =back
16057:
16058: =item
16059: usersessions: set options for hosting of your users in other domains, and hosting of users from other domains
16060: on your servers.
16061:
16062: =over
16063:
16064: =item
16065: remotesessions, hostedsessions
16066:
16067: =back
16068:
16069: =back
16070:
16071: In cases where a domain coordinator has never used the "Set Domain Configuration"
16072: utility to create a configuration.db file on a domain's primary library server
16073: only the following domain defaults: auth_def, auth_arg_def, lang_def
16074: -- corresponding values are authentication type (internal, krb4, krb5,
16075: or localauth), initial password or a kerberos realm, language (e.g., en-us) --
16076: will be available. Values are retrieved from cache (if current), unless the
16077: optional $ignore_cache arg is true, or from domain's configuration.db (if available),
16078: or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab.
16079:
16080: Typical usage:
16081:
16082: %domdefaults = &get_domain_defaults($target_domain);
16083:
16084: =back
16085:
16086: =head2 Network Status Functions
16087:
16088: =over 4
16089:
16090: =item *
16091:
16092: dirlist() : return directory list based on URI (first arg).
16093:
16094: Inputs: 1 required, 5 optional.
16095:
16096: =over
16097:
16098: =item
16099: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
16100:
16101: =item
16102: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
16103:
16104: =item
16105: $username - username of user/course to be listed. Extracted from $uri if absent.
16106:
16107: =item
16108: $getpropath - boolean: 1 if prepend path using &propath().
16109:
16110: =item
16111: $getuserdir - boolean: 1 if prepend path for "userfiles".
16112:
16113: =item
16114: $alternateRoot - path to prepend in place of path from $uri.
16115:
16116: =back
16117:
16118: Returns: Array of up to two items.
16119:
16120: =over
16121:
16122: a reference to an array of files/subdirectories
16123:
16124: =over
16125:
16126: Each element in the array of files/subdirectories is a & separated list of
16127: item name and the result of running stat on the item. If dirlist was requested
16128: for a file instead of a directory, the item name will be ''. For a directory
16129: listing, if the item is a metadata file, the element will end &N&M
16130: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
16131: default copyright set (1).
16132:
16133: =back
16134:
16135: a scalar containing error condition (if encountered).
16136:
16137: =over
16138:
16139: =item
16140: no_host (no homeserver identified for $username:$domain).
16141:
16142: =item
16143: no_such_host (server contacted for listing not identified as valid host).
16144:
16145: =item
16146: con_lost (connection to remote server failed).
16147:
16148: =item
16149: refused (invalid $username:$domain received on lond side).
16150:
16151: =item
16152: no_such_dir (directory at specified path on lond side does not exist).
16153:
16154: =item
16155: empty (directory at specified path on lond side is empty).
16156:
16157: =over
16158:
16159: This is currently not encountered because the &ls3, &ls2,
16160: &ls (_handler) routines on the lond side do not filter out
16161: . and .. from a directory listing.
16162:
16163: =back
16164:
16165: =back
16166:
16167: =back
16168:
16169: =item *
16170:
16171: spareserver() : find server with least workload from spare.tab
16172:
16173:
16174: =item *
16175:
16176: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
16177: if there is no corresponding loncapa host.
16178:
16179: =back
16180:
16181:
16182: =head2 Apache Request
16183:
16184: =over 4
16185:
16186: =item *
16187:
16188: ssi($url,%hash) : server side include, does a complete request cycle on url to
16189: localhost, posts hash
16190:
16191: =back
16192:
16193: =head2 Data to String to Data
16194:
16195: =over 4
16196:
16197: =item *
16198:
16199: hash2str(%hash) : convert a hash into a string complete with escaping and '='
16200: and '&' separators, supports elements that are arrayrefs and hashrefs
16201:
16202: =item *
16203:
16204: hashref2str($hashref) : convert a hashref into a string complete with
16205: escaping and '=' and '&' separators, supports elements that are
16206: arrayrefs and hashrefs
16207:
16208: =item *
16209:
16210: arrayref2str($arrayref) : convert an arrayref into a string complete
16211: with escaping and '&' separators, supports elements that are arrayrefs
16212: and hashrefs
16213:
16214: =item *
16215:
16216: str2hash($string) : convert string to hash using unescaping and
16217: splitting on '=' and '&', supports elements that are arrayrefs and
16218: hashrefs
16219:
16220: =item *
16221:
16222: str2array($string) : convert string to hash using unescaping and
16223: splitting on '&', supports elements that are arrayrefs and hashrefs
16224:
16225: =back
16226:
16227: =head2 Logging Routines
16228:
16229:
16230: These routines allow one to make log messages in the lonnet.log and
16231: lonnet.perm logfiles.
16232:
16233: =over 4
16234:
16235: =item *
16236:
16237: logtouch() : make sure the logfile, lonnet.log, exists
16238:
16239: =item *
16240:
16241: logthis() : append message to the normal lonnet.log file, it gets
16242: preiodically rolled over and deleted.
16243:
16244: =item *
16245:
16246: logperm() : append a permanent message to lonnet.perm.log, this log
16247: file never gets deleted by any automated portion of the system, only
16248: messages of critical importance should go in here.
16249:
16250:
16251: =back
16252:
16253: =head2 General File Helper Routines
16254:
16255: =over 4
16256:
16257: =item *
16258:
16259: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
16260: (a) files in /uploaded
16261: (i) If a local copy of the file exists -
16262: compares modification date of local copy with last-modified date for
16263: definitive version stored on home server for course. If local copy is
16264: stale, requests a new version from the home server and stores it.
16265: If the original has been removed from the home server, then local copy
16266: is unlinked.
16267: (ii) If local copy does not exist -
16268: requests the file from the home server and stores it.
16269:
16270: If $caller is 'uploadrep':
16271: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
16272: for request for files originally uploaded via DOCS.
16273: - returns 'ok' if fresh local copy now available, -1 otherwise.
16274:
16275: Otherwise:
16276: This indicates a call from the content generation phase of the request.
16277: - returns the entire contents of the file or -1.
16278:
16279: (b) files in /res
16280: - returns the entire contents of a file or -1;
16281: it properly subscribes to and replicates the file if neccessary.
16282:
16283:
16284: =item *
16285:
16286: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
16287: reference
16288:
16289: returns either a stat() list of data about the file or an empty list
16290: if the file doesn't exist or couldn't find out about it (connection
16291: problems or user unknown)
16292:
16293: =item *
16294:
16295: filelocation($dir,$file) : returns file system location of a file
16296: based on URI; meant to be "fairly clean" absolute reference, $dir is a
16297: directory that relative $file lookups are to looked in ($dir of /a/dir
16298: and a file of ../bob will become /a/bob)
16299:
16300: =item *
16301:
16302: hreflocation($dir,$file) : returns file system location or a URL; same as
16303: filelocation except for hrefs
16304:
16305: =item *
16306:
16307: declutter() : declutters URLs -- remove beginning slashes, 'res' etc.
16308: also removes beginning /home/httpd/html unless /priv/ follows it.
16309:
16310: =back
16311:
16312: =head2 Usererfile file routines (/uploaded*)
16313:
16314: =over 4
16315:
16316: =item *
16317:
16318: userfileupload(): main rotine for putting a file in a user or course's
16319: filespace, arguments are,
16320:
16321: formname - required - this is the name of the element in $env where the
16322: filename, and the contents of the file to create/modifed exist
16323: the filename is in $env{'form.'.$formname.'.filename'} and the
16324: contents of the file is located in $env{'form.'.$formname}
16325: context - if coursedoc, store the file in the course of the active role
16326: of the current user;
16327: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
16328: if 'canceloverwrite': delete file in tmp/overwrites directory
16329: subdir - required - subdirectory to put the file in under ../userfiles/
16330: if undefined, it will be placed in "unknown"
16331:
16332: (This routine calls clean_filename() to remove any dangerous
16333: characters from the filename, and then calls finuserfileupload() to
16334: complete the transaction)
16335:
16336: returns either the url of the uploaded file (/uploaded/....) if successful
16337: and /adm/notfound.html if unsuccessful
16338:
16339: =item *
16340:
16341: clean_filename(): routine for cleaing a filename up for storage in
16342: userfile space, argument is:
16343:
16344: filename - proposed filename
16345:
16346: returns: the new clean filename
16347:
16348: =item *
16349:
16350: finishuserfileupload(): routine that creates and sends the file to
16351: userspace, probably shouldn't be called directly
16352:
16353: docuname: username or courseid of destination for the file
16354: docudom: domain of user/course of destination for the file
16355: formname: same as for userfileupload()
16356: fname: filename (including subdirectories) for the file
16357: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
16358: if hashref, and context is scantron, will convert csv format to standard format
16359: allfiles: reference to hash used to store objects found by parser
16360: codebase: reference to hash used for codebases of java objects found by parser
16361: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
16362: thumbheight: height (pixels) of thumbnail to be created for uploaded image
16363: resizewidth: width to be used to resize image using resizeImage from ImageMagick
16364: resizeheight: height to be used to resize image using resizeImage from ImageMagick
16365: context: if 'overwrite', will move the uploaded file from its temporary location to
16366: userfiles to facilitate overwriting a previously uploaded file with same name.
16367: mimetype: reference to scalar to accommodate mime type determined
16368: from File::MMagic if $parser = parse.
16369:
16370: returns either the url of the uploaded file (/uploaded/....) if successful
16371: and /adm/notfound.html if unsuccessful (or an error message if context
16372: was 'overwrite').
16373:
16374:
16375: =item *
16376:
16377: renameuserfile(): renames an existing userfile to a new name
16378:
16379: Args:
16380: docuname: username or courseid of destination for the file
16381: docudom: domain of user/course of destination for the file
16382: old: current file name (including any subdirs under userfiles)
16383: new: desired file name (including any subdirs under userfiles)
16384:
16385: =item *
16386:
16387: mkdiruserfile(): creates a directory is a userfiles dir
16388:
16389: Args:
16390: docuname: username or courseid of destination for the file
16391: docudom: domain of user/course of destination for the file
16392: dir: dir to create (including any subdirs under userfiles)
16393:
16394: =item *
16395:
16396: removeuserfile(): removes a file that exists in userfiles
16397:
16398: Args:
16399: docuname: username or courseid of destination for the file
16400: docudom: domain of user/course of destination for the file
16401: fname: filname to delete (including any subdirs under userfiles)
16402:
16403: =item *
16404:
16405: removeuploadedurl(): convience function for removeuserfile()
16406:
16407: Args:
16408: url: a full /uploaded/... url to delete
16409:
16410: =item *
16411:
16412: get_portfile_permissions():
16413: Args:
16414: domain: domain of user or course contain the portfolio files
16415: user: name of user or num of course contain the portfolio files
16416: Returns:
16417: hashref of a dump of the proper file_permissions.db
16418:
16419:
16420: =item *
16421:
16422: get_access_controls():
16423:
16424: Args:
16425: current_permissions: the hash ref returned from get_portfile_permissions()
16426: group: (optional) the group you want the files associated with
16427: file: (optional) the file you want access info on
16428:
16429: Returns:
16430: a hash (keys are file names) of hashes containing
16431: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
16432: values are XML containing access control settings (see below)
16433:
16434: Internal notes:
16435:
16436: access controls are stored in file_permissions.db as key=value pairs.
16437: key -> path to file/file_name\0uniqueID:scope_end_start
16438: where scope -> public,guest,course,group,domains or users.
16439: end -> UNIX time for end of access (0 -> no end date)
16440: start -> UNIX time for start of access
16441:
16442: value -> XML description of access control
16443: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
16444: <start></start>
16445: <end></end>
16446:
16447: <password></password> for scope type = guest
16448:
16449: <domain></domain> for scope type = course or group
16450: <number></number>
16451: <roles id="">
16452: <role></role>
16453: <access></access>
16454: <section></section>
16455: <group></group>
16456: </roles>
16457:
16458: <dom></dom> for scope type = domains
16459:
16460: <users> for scope type = users
16461: <user>
16462: <uname></uname>
16463: <udom></udom>
16464: </user>
16465: </users>
16466: </scope>
16467:
16468: Access data is also aggregated for each file in an additional key=value pair:
16469: key -> path to file/file_name\0accesscontrol
16470: value -> reference to hash
16471: hash contains key = value pairs
16472: where key = uniqueID:scope_end_start
16473: value = UNIX time record was last updated
16474:
16475: Used to improve speed of look-ups of access controls for each file.
16476:
16477: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
16478:
16479: =item *
16480:
16481: modify_access_controls():
16482:
16483: Modifies access controls for a portfolio file
16484: Args
16485: 1. file name
16486: 2. reference to hash of required changes,
16487: 3. domain
16488: 4. username
16489: where domain,username are the domain of the portfolio owner
16490: (either a user or a course)
16491:
16492: Returns:
16493: 1. result of additions or updates ('ok' or 'error', with error message).
16494: 2. result of deletions ('ok' or 'error', with error message).
16495: 3. reference to hash of any new or updated access controls.
16496: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
16497: key = integer (inbound ID)
16498: value = uniqueID
16499:
16500: =item *
16501:
16502: get_timebased_id():
16503:
16504: Attempts to get a unique timestamp-based suffix for use with items added to a
16505: course via the Course Editor (e.g., folders, composite pages,
16506: group bulletin boards).
16507:
16508: Args: (first three required; six others optional)
16509:
16510: 1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
16511: docssequence, or name of group
16512:
16513: 2. keyid (alphanumeric): name of temporary locking key in hash,
16514: e.g., num, boardids
16515:
16516: 3. namespace: name of gdbm file used to store suffixes already assigned;
16517: file will be named nohist_namespace.db
16518:
16519: 4. cdom: domain of course; default is current course domain from %env
16520:
16521: 5. cnum: course number; default is current course number from %env
16522:
16523: 6. idtype: set to concat if an additional digit is to be appended to the
16524: unix timestamp to form the suffix, if the plain timestamp is already
16525: in use. Default is to not do this, but simply increment the unix
16526: timestamp by 1 until a unique key is obtained.
16527:
16528: 7. who: holder of locking key; defaults to user:domain for user.
16529:
16530: 8. locktries: number of attempts to obtain a lock (sleep of 1s before
16531: retrying); default is 3.
16532:
16533: 9. maxtries: number of attempts to obtain a unique suffix; default is 20.
16534:
16535: Returns:
16536:
16537: 1. suffix obtained (numeric)
16538:
16539: 2. result of deleting locking key (ok if deleted, or lock never obtained)
16540:
16541: 3. error: contains (localized) error message if an error occurred.
16542:
16543:
16544: =back
16545:
16546: =head2 HTTP Helper Routines
16547:
16548: =over 4
16549:
16550: =item *
16551:
16552: escape() : unpack non-word characters into CGI-compatible hex codes
16553:
16554: =item *
16555:
16556: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
16557:
16558: =back
16559:
16560: =head1 PRIVATE SUBROUTINES
16561:
16562: =head2 Underlying communication routines (Shouldn't call)
16563:
16564: =over 4
16565:
16566: =item *
16567:
16568: subreply() : tries to pass a message to lonc, returns con_lost if incapable
16569:
16570: =item *
16571:
16572: reply() : uses subreply to send a message to remote machine, logs all failures
16573:
16574: =item *
16575:
16576: critical() : passes a critical message to another server; if cannot
16577: get through then place message in connection buffer directory and
16578: returns con_delayed, if incapable of saving message, returns
16579: con_failed
16580:
16581: =item *
16582:
16583: reconlonc() : tries to reconnect lonc client processes.
16584:
16585: =back
16586:
16587: =head2 Resource Access Logging
16588:
16589: =over 4
16590:
16591: =item *
16592:
16593: flushcourselogs() : flush (save) buffer logs and access logs
16594:
16595: =item *
16596:
16597: courselog($what) : save message for course in hash
16598:
16599: =item *
16600:
16601: courseacclog($what) : save message for course using &courselog(). Perform
16602: special processing for specific resource types (problems, exams, quizzes, etc).
16603:
16604: =item *
16605:
16606: goodbye() : flush course logs and log shutting down; it is called in srm.conf
16607: as a PerlChildExitHandler
16608:
16609: =back
16610:
16611: =head2 Other
16612:
16613: =over 4
16614:
16615: =item *
16616:
16617: symblist($mapname,%newhash) : update symbolic storage links
16618:
16619: =back
16620:
16621: =cut
16622:
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