File:
[LON-CAPA] /
loncom /
lonnet /
perl /
lonnet.pm
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Thu Jul 18 18:28:58 2019 UTC (5 years ago) by
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- Bug 6754. LON-CAPA as LTI Provider.
Domain configuration to support session expiration in LON-CAPA,
after user logs out of LTI Consumer which originally launched session,
(if Consumer supports logoutServiceUrl; e.g. custom_logout_url in Canvas).
1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1411 2019/07/18 18:28:58 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: sub delusersession {
1086: my ($lonid,$udom,$uname) = @_;
1087: my $uprimary_id = &domain($udom,'primary');
1088: my $uintdom = &internet_dom($uprimary_id);
1089: my $intdom = &internet_dom($lonid);
1090: my $serverhomedom = &host_domain($lonid);
1091: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1092: return &reply(join(':','delusersession',
1093: map {&escape($_)} ($udom,$uname)),$lonid);
1094: }
1095: return;
1096: }
1097:
1098: # check if user's browser sent load balancer cookie and server still has session
1099: # and is not overloaded.
1100: sub check_for_balancer_cookie {
1101: my ($r,$update_mtime) = @_;
1102: my ($otherserver,$cookie);
1103: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
1104: if (exists($cookies{'balanceID'})) {
1105: my $balid = $cookies{'balanceID'};
1106: $cookie=&LONCAPA::clean_handle($balid->value);
1107: my $balancedir=$r->dir_config('lonBalanceDir');
1108: if ((-d $balancedir) && (-e "$balancedir/$cookie.id")) {
1109: if ($cookie =~ /^($match_domain)_($match_username)_[a-f0-9]+$/) {
1110: my ($possudom,$possuname) = ($1,$2);
1111: my $has_session = 0;
1112: if ((&domain($possudom) ne '') &&
1113: (&homeserver($possuname,$possudom) ne 'no_host')) {
1114: my $try_server;
1115: my $opened = open(my $idf,'+<',"$balancedir/$cookie.id");
1116: if ($opened) {
1117: flock($idf,LOCK_SH);
1118: while (my $line = <$idf>) {
1119: chomp($line);
1120: if (&hostname($line) ne '') {
1121: $try_server = $line;
1122: last;
1123: }
1124: }
1125: close($idf);
1126: if (($try_server) &&
1127: (&has_user_session($try_server,$possudom,$possuname))) {
1128: my $lowest_load = 30000;
1129: ($otherserver,$lowest_load) =
1130: &compare_server_load($try_server,undef,$lowest_load);
1131: if ($otherserver ne '' && $lowest_load < 100) {
1132: $has_session = 1;
1133: } else {
1134: undef($otherserver);
1135: }
1136: }
1137: }
1138: }
1139: if ($has_session) {
1140: if ($update_mtime) {
1141: my $atime = my $mtime = time;
1142: utime($atime,$mtime,"$balancedir/$cookie.id");
1143: }
1144: } else {
1145: unlink("$balancedir/$cookie.id");
1146: }
1147: }
1148: }
1149: }
1150: return ($otherserver,$cookie);
1151: }
1152:
1153: sub delbalcookie {
1154: my ($cookie,$balancer) =@_;
1155: if ($cookie =~ /^($match_domain)\_($match_username)\_[a-f0-9]{32}$/) {
1156: my ($udom,$uname) = ($1,$2);
1157: my $uprimary_id = &domain($udom,'primary');
1158: my $uintdom = &internet_dom($uprimary_id);
1159: my $intdom = &internet_dom($balancer);
1160: my $serverhomedom = &host_domain($balancer);
1161: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1162: return &reply("delbalcookie:$cookie",$balancer);
1163: }
1164: }
1165: }
1166:
1167: # -------------------------------- ask if server already has a session for user
1168: sub has_user_session {
1169: my ($lonid,$udom,$uname) = @_;
1170: my $result = &reply(join(':','userhassession',
1171: map {&escape($_)} ($udom,$uname)),$lonid);
1172: return 1 if ($result eq 'ok');
1173:
1174: return 0;
1175: }
1176:
1177: # --------- determine least loaded server in a user's domain which allows login
1178:
1179: sub choose_server {
1180: my ($udom,$checkloginvia,$required,$skiploadbal) = @_;
1181: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
1182: my %servers = &get_servers($udom);
1183: my $lowest_load = 30000;
1184: my ($login_host,$hostname,$portal_path,$isredirect,$balancers);
1185: if ($skiploadbal) {
1186: ($balancers,my $cached)=&is_cached_new('loadbalancing',$udom);
1187: unless (defined($cached)) {
1188: my $cachetime = 60*60*24;
1189: my %domconfig =
1190: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1191: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1192: $balancers = &do_cache_new('loadbalancing',$udom,$domconfig{'loadbalancing'},
1193: $cachetime);
1194: }
1195: }
1196: }
1197: foreach my $lonhost (keys(%servers)) {
1198: if ($skiploadbal) {
1199: if (ref($balancers) eq 'HASH') {
1200: next if (exists($balancers->{$lonhost}));
1201: }
1202: }
1203: my $loginvia;
1204: if ($checkloginvia) {
1205: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
1206: if ($loginvia) {
1207: my ($server,$path) = split(/:/,$loginvia);
1208: ($login_host, $lowest_load) =
1209: &compare_server_load($server, $login_host, $lowest_load, $required);
1210: if ($login_host eq $server) {
1211: $portal_path = $path;
1212: $isredirect = 1;
1213: }
1214: } else {
1215: ($login_host, $lowest_load) =
1216: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1217: if ($login_host eq $lonhost) {
1218: $portal_path = '';
1219: $isredirect = '';
1220: }
1221: }
1222: } else {
1223: ($login_host, $lowest_load) =
1224: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1225: }
1226: }
1227: if ($login_host ne '') {
1228: $hostname = &hostname($login_host);
1229: }
1230: return ($login_host,$hostname,$portal_path,$isredirect,$lowest_load);
1231: }
1232:
1233: # --------------------------------------------- Try to change a user's password
1234:
1235: sub changepass {
1236: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
1237: $currentpass = &escape($currentpass);
1238: $newpass = &escape($newpass);
1239: my $lonhost = $perlvar{'lonHostID'};
1240: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
1241: $server);
1242: if (! $answer) {
1243: &logthis("No reply on password change request to $server ".
1244: "by $uname in domain $udom.");
1245: } elsif ($answer =~ "^ok") {
1246: &logthis("$uname in $udom successfully changed their password ".
1247: "on $server.");
1248: } elsif ($answer =~ "^pwchange_failure") {
1249: &logthis("$uname in $udom was unable to change their password ".
1250: "on $server. The action was blocked by either lcpasswd ".
1251: "or pwchange");
1252: } elsif ($answer =~ "^non_authorized") {
1253: &logthis("$uname in $udom did not get their password correct when ".
1254: "attempting to change it on $server.");
1255: } elsif ($answer =~ "^auth_mode_error") {
1256: &logthis("$uname in $udom attempted to change their password despite ".
1257: "not being locally or internally authenticated on $server.");
1258: } elsif ($answer =~ "^unknown_user") {
1259: &logthis("$uname in $udom attempted to change their password ".
1260: "on $server but were unable to because $server is not ".
1261: "their home server.");
1262: } elsif ($answer =~ "^refused") {
1263: &logthis("$server refused to change $uname in $udom password because ".
1264: "it was sent an unencrypted request to change the password.");
1265: } elsif ($answer =~ "invalid_client") {
1266: &logthis("$server refused to change $uname in $udom password because ".
1267: "it was a reset by e-mail originating from an invalid server.");
1268: } elsif ($answer =~ "^prioruse") {
1269: &logthis("$server refused to change $uname in $udom password because ".
1270: "the password had been used before");
1271: }
1272: return $answer;
1273: }
1274:
1275: # ----------------------- Try to determine user's current authentication scheme
1276:
1277: sub queryauthenticate {
1278: my ($uname,$udom)=@_;
1279: my $uhome=&homeserver($uname,$udom);
1280: if (!$uhome) {
1281: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1282: return 'no_host';
1283: }
1284: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1285: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1286: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1287: }
1288: return $answer;
1289: }
1290:
1291: # --------- Try to authenticate user from domain's lib servers (first this one)
1292:
1293: sub authenticate {
1294: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1295: $upass=&escape($upass);
1296: $uname= &LONCAPA::clean_username($uname);
1297: my $uhome=&homeserver($uname,$udom,1);
1298: my $newhome;
1299: if ((!$uhome) || ($uhome eq 'no_host')) {
1300: # Maybe the machine was offline and only re-appeared again recently?
1301: &reconlonc();
1302: # One more
1303: $uhome=&homeserver($uname,$udom,1);
1304: if (($uhome eq 'no_host') && $checkdefauth) {
1305: if (defined(&domain($udom,'primary'))) {
1306: $newhome=&domain($udom,'primary');
1307: }
1308: if ($newhome ne '') {
1309: $uhome = $newhome;
1310: }
1311: }
1312: if ((!$uhome) || ($uhome eq 'no_host')) {
1313: &logthis("User $uname at $udom is unknown in authenticate");
1314: return 'no_host';
1315: }
1316: }
1317: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1318: if ($answer eq 'authorized') {
1319: if ($newhome) {
1320: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1321: return 'no_account_on_host';
1322: } else {
1323: &logthis("User $uname at $udom authorized by $uhome");
1324: return $uhome;
1325: }
1326: }
1327: if ($answer eq 'non_authorized') {
1328: &logthis("User $uname at $udom rejected by $uhome");
1329: return 'no_host';
1330: }
1331: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1332: return 'no_host';
1333: }
1334:
1335: sub can_host_session {
1336: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1337: my $canhost = 1;
1338: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1339: if (ref($remotesessions) eq 'HASH') {
1340: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1341: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1342: $canhost = 0;
1343: } else {
1344: $canhost = 1;
1345: }
1346: }
1347: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1348: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1349: $canhost = 1;
1350: } else {
1351: $canhost = 0;
1352: }
1353: }
1354: if ($canhost) {
1355: if ($remotesessions->{'version'} ne '') {
1356: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1357: if ($reqmajor ne '' && $reqminor ne '') {
1358: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1359: my $major = $1;
1360: my $minor = $2;
1361: if (($major < $reqmajor ) ||
1362: (($major == $reqmajor) && ($minor < $reqminor))) {
1363: $canhost = 0;
1364: }
1365: } else {
1366: $canhost = 0;
1367: }
1368: }
1369: }
1370: }
1371: }
1372: if ($canhost) {
1373: if (ref($hostedsessions) eq 'HASH') {
1374: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1375: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1376: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1377: if (($uint_dom ne '') &&
1378: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1379: $canhost = 0;
1380: } else {
1381: $canhost = 1;
1382: }
1383: }
1384: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1385: if (($uint_dom ne '') &&
1386: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1387: $canhost = 1;
1388: } else {
1389: $canhost = 0;
1390: }
1391: }
1392: }
1393: }
1394: return $canhost;
1395: }
1396:
1397: sub spare_can_host {
1398: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1399: my $canhost=1;
1400: my $try_server_hostname = &hostname($try_server);
1401: my $serverhomeID = &get_server_homeID($try_server_hostname);
1402: my $serverhomedom = &host_domain($serverhomeID);
1403: my %defdomdefaults = &get_domain_defaults($serverhomedom);
1404: if (ref($defdomdefaults{'offloadnow'}) eq 'HASH') {
1405: if ($defdomdefaults{'offloadnow'}{$try_server}) {
1406: $canhost = 0;
1407: }
1408: }
1409: if (($canhost) && ($uint_dom)) {
1410: my @intdoms;
1411: my $internet_names = &get_internet_names($try_server);
1412: if (ref($internet_names) eq 'ARRAY') {
1413: @intdoms = @{$internet_names};
1414: }
1415: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1416: my $remoterev = &get_server_loncaparev(undef,$try_server);
1417: $canhost = &can_host_session($udom,$try_server,$remoterev,
1418: $remotesessions,
1419: $defdomdefaults{'hostedsessions'});
1420: }
1421: }
1422: return $canhost;
1423: }
1424:
1425: sub this_host_spares {
1426: my ($dom) = @_;
1427: my ($dom_in_use,$lonhost_in_use,$result);
1428: my @hosts = ¤t_machine_ids();
1429: foreach my $lonhost (@hosts) {
1430: if (&host_domain($lonhost) eq $dom) {
1431: $dom_in_use = $dom;
1432: $lonhost_in_use = $lonhost;
1433: last;
1434: }
1435: }
1436: if ($dom_in_use ne '') {
1437: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1438: }
1439: if (ref($result) ne 'HASH') {
1440: $lonhost_in_use = $perlvar{'lonHostID'};
1441: $dom_in_use = &host_domain($lonhost_in_use);
1442: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1443: if (ref($result) ne 'HASH') {
1444: $result = \%spareid;
1445: }
1446: }
1447: return $result;
1448: }
1449:
1450: sub spares_for_offload {
1451: my ($dom_in_use,$lonhost_in_use) = @_;
1452: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1453: if (defined($cached)) {
1454: return $result;
1455: } else {
1456: my $cachetime = 60*60*24;
1457: my %domconfig =
1458: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1459: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1460: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1461: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1462: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1463: }
1464: }
1465: }
1466: }
1467: return;
1468: }
1469:
1470: sub get_lonbalancer_config {
1471: my ($servers) = @_;
1472: my ($currbalancer,$currtargets);
1473: if (ref($servers) eq 'HASH') {
1474: foreach my $server (keys(%{$servers})) {
1475: my %what = (
1476: spareid => 1,
1477: perlvar => 1,
1478: );
1479: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1480: if ($result eq 'ok') {
1481: if (ref($returnhash) eq 'HASH') {
1482: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1483: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1484: $currbalancer = $server;
1485: $currtargets = {};
1486: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1487: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1488: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1489: }
1490: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1491: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1492: }
1493: }
1494: last;
1495: }
1496: }
1497: }
1498: }
1499: }
1500: }
1501: return ($currbalancer,$currtargets);
1502: }
1503:
1504: sub check_loadbalancing {
1505: my ($uname,$udom,$caller) = @_;
1506: my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
1507: $rule_in_effect,$offloadto,$otherserver,$setcookie,$dom_balancers);
1508: my $lonhost = $perlvar{'lonHostID'};
1509: my @hosts = ¤t_machine_ids();
1510: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1511: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1512: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1513: my $serverhomedom = &host_domain($lonhost);
1514: my $domneedscache;
1515: my $cachetime = 60*60*24;
1516:
1517: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1518: $dom_in_use = $udom;
1519: $homeintdom = 1;
1520: } else {
1521: $dom_in_use = $serverhomedom;
1522: }
1523: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1524: unless (defined($cached)) {
1525: my %domconfig =
1526: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1527: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1528: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1529: } else {
1530: $domneedscache = $dom_in_use;
1531: }
1532: }
1533: if (ref($result) eq 'HASH') {
1534: ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers) =
1535: &check_balancer_result($result,@hosts);
1536: if ($is_balancer) {
1537: if (ref($currrules) eq 'HASH') {
1538: if ($homeintdom) {
1539: if ($uname ne '') {
1540: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1541: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1542: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1543: $rule_in_effect = $currrules->{'_LC_author'};
1544: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1545: $rule_in_effect = $currrules->{'_LC_adv'}
1546: }
1547: }
1548: if ($rule_in_effect eq '') {
1549: my %userenv = &userenvironment($udom,$uname,'inststatus');
1550: if ($userenv{'inststatus'} ne '') {
1551: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1552: my ($othertitle,$usertypes,$types) =
1553: &Apache::loncommon::sorted_inst_types($udom);
1554: if (ref($types) eq 'ARRAY') {
1555: foreach my $type (@{$types}) {
1556: if (grep(/^\Q$type\E$/,@statuses)) {
1557: if (exists($currrules->{$type})) {
1558: $rule_in_effect = $currrules->{$type};
1559: }
1560: }
1561: }
1562: }
1563: } else {
1564: if (exists($currrules->{'default'})) {
1565: $rule_in_effect = $currrules->{'default'};
1566: }
1567: }
1568: }
1569: } else {
1570: if (exists($currrules->{'default'})) {
1571: $rule_in_effect = $currrules->{'default'};
1572: }
1573: }
1574: } else {
1575: if ($currrules->{'_LC_external'} ne '') {
1576: $rule_in_effect = $currrules->{'_LC_external'};
1577: }
1578: }
1579: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1580: $uname,$udom);
1581: }
1582: }
1583: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1584: ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1585: unless (defined($cached)) {
1586: my %domconfig =
1587: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1588: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1589: $result = &do_cache_new('loadbalancing',$serverhomedom,$domconfig{'loadbalancing'},$cachetime);
1590: } else {
1591: $domneedscache = $serverhomedom;
1592: }
1593: }
1594: if (ref($result) eq 'HASH') {
1595: ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers) =
1596: &check_balancer_result($result,@hosts);
1597: if ($is_balancer) {
1598: if (ref($currrules) eq 'HASH') {
1599: if ($currrules->{'_LC_internetdom'} ne '') {
1600: $rule_in_effect = $currrules->{'_LC_internetdom'};
1601: }
1602: }
1603: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1604: $uname,$udom);
1605: }
1606: } else {
1607: if ($perlvar{'lonBalancer'} eq 'yes') {
1608: $is_balancer = 1;
1609: $offloadto = &this_host_spares($dom_in_use);
1610: }
1611: unless (defined($cached)) {
1612: $domneedscache = $serverhomedom;
1613: }
1614: }
1615: } else {
1616: if ($perlvar{'lonBalancer'} eq 'yes') {
1617: $is_balancer = 1;
1618: $offloadto = &this_host_spares($dom_in_use);
1619: }
1620: unless (defined($cached)) {
1621: $domneedscache = $serverhomedom;
1622: }
1623: }
1624: if ($domneedscache) {
1625: &do_cache_new('loadbalancing',$domneedscache,$is_balancer,$cachetime);
1626: }
1627: if ($is_balancer) {
1628: my $lowest_load = 30000;
1629: if (ref($offloadto) eq 'HASH') {
1630: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1631: foreach my $try_server (@{$offloadto->{'primary'}}) {
1632: ($otherserver,$lowest_load) =
1633: &compare_server_load($try_server,$otherserver,$lowest_load);
1634: }
1635: }
1636: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1637:
1638: if (!$found_server) {
1639: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1640: foreach my $try_server (@{$offloadto->{'default'}}) {
1641: ($otherserver,$lowest_load) =
1642: &compare_server_load($try_server,$otherserver,$lowest_load);
1643: }
1644: }
1645: }
1646: } elsif (ref($offloadto) eq 'ARRAY') {
1647: if (@{$offloadto} == 1) {
1648: $otherserver = $offloadto->[0];
1649: } elsif (@{$offloadto} > 1) {
1650: foreach my $try_server (@{$offloadto}) {
1651: ($otherserver,$lowest_load) =
1652: &compare_server_load($try_server,$otherserver,$lowest_load);
1653: }
1654: }
1655: }
1656: unless ($caller eq 'login') {
1657: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1658: $is_balancer = 0;
1659: if ($uname ne '' && $udom ne '') {
1660: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1661: &appenv({'user.loadbalexempt' => $lonhost,
1662: 'user.loadbalcheck.time' => time});
1663: }
1664: }
1665: }
1666: }
1667: unless ($homeintdom) {
1668: undef($setcookie);
1669: }
1670: }
1671: return ($is_balancer,$otherserver,$setcookie,$offloadto,$dom_balancers);
1672: }
1673:
1674: sub check_balancer_result {
1675: my ($result,@hosts) = @_;
1676: my ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers);
1677: if (ref($result) eq 'HASH') {
1678: if ($result->{'lonhost'} ne '') {
1679: my $currbalancer = $result->{'lonhost'};
1680: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1681: $is_balancer = 1;
1682: $currtargets = $result->{'targets'};
1683: $currrules = $result->{'rules'};
1684: }
1685: $dom_balancers = $currbalancer;
1686: } else {
1687: if (keys(%{$result})) {
1688: foreach my $key (keys(%{$result})) {
1689: if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&
1690: (ref($result->{$key}) eq 'HASH')) {
1691: $is_balancer = 1;
1692: $currrules = $result->{$key}{'rules'};
1693: $currtargets = $result->{$key}{'targets'};
1694: $setcookie = $result->{$key}{'cookie'};
1695: last;
1696: }
1697: }
1698: $dom_balancers = join(',',sort(keys(%{$result})));
1699: }
1700: }
1701: }
1702: return ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers);
1703: }
1704:
1705: sub get_loadbalancer_targets {
1706: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1707: my $offloadto;
1708: if ($rule_in_effect eq 'none') {
1709: return [$perlvar{'lonHostID'}];
1710: } elsif ($rule_in_effect eq '') {
1711: $offloadto = $currtargets;
1712: } else {
1713: if ($rule_in_effect eq 'homeserver') {
1714: my $homeserver = &homeserver($uname,$udom);
1715: if ($homeserver ne 'no_host') {
1716: $offloadto = [$homeserver];
1717: }
1718: } elsif ($rule_in_effect eq 'externalbalancer') {
1719: my %domconfig =
1720: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1721: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1722: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1723: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1724: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1725: }
1726: }
1727: } else {
1728: my %servers = &internet_dom_servers($udom);
1729: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1730: if (&hostname($remotebalancer) ne '') {
1731: $offloadto = [$remotebalancer];
1732: }
1733: }
1734: } elsif (&hostname($rule_in_effect) ne '') {
1735: $offloadto = [$rule_in_effect];
1736: }
1737: }
1738: return $offloadto;
1739: }
1740:
1741: sub internet_dom_servers {
1742: my ($dom) = @_;
1743: my (%uniqservers,%servers);
1744: my $primaryserver = &hostname(&domain($dom,'primary'));
1745: my @machinedoms = &machine_domains($primaryserver);
1746: foreach my $mdom (@machinedoms) {
1747: my %currservers = %servers;
1748: my %server = &get_servers($mdom);
1749: %servers = (%currservers,%server);
1750: }
1751: my %by_hostname;
1752: foreach my $id (keys(%servers)) {
1753: push(@{$by_hostname{$servers{$id}}},$id);
1754: }
1755: foreach my $hostname (sort(keys(%by_hostname))) {
1756: if (@{$by_hostname{$hostname}} > 1) {
1757: my $match = 0;
1758: foreach my $id (@{$by_hostname{$hostname}}) {
1759: if (&host_domain($id) eq $dom) {
1760: $uniqservers{$id} = $hostname;
1761: $match = 1;
1762: }
1763: }
1764: unless ($match) {
1765: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1766: }
1767: } else {
1768: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1769: }
1770: }
1771: return %uniqservers;
1772: }
1773:
1774: sub trusted_domains {
1775: my ($cmdtype,$calldom) = @_;
1776: my ($trusted,$untrusted);
1777: if (&domain($calldom) eq '') {
1778: return ($trusted,$untrusted);
1779: }
1780: unless ($cmdtype =~ /^(content|shared|enroll|coaurem|othcoau|domroles|catalog|reqcrs|msg)$/) {
1781: return ($trusted,$untrusted);
1782: }
1783: my $callprimary = &domain($calldom,'primary');
1784: my $intcalldom = &Apache::lonnet::internet_dom($callprimary);
1785: if ($intcalldom eq '') {
1786: return ($trusted,$untrusted);
1787: }
1788:
1789: my ($trustconfig,$cached)=&Apache::lonnet::is_cached_new('trust',$calldom);
1790: unless (defined($cached)) {
1791: my %domconfig = &Apache::lonnet::get_dom('configuration',['trust'],$calldom);
1792: &Apache::lonnet::do_cache_new('trust',$calldom,$domconfig{'trust'},3600);
1793: $trustconfig = $domconfig{'trust'};
1794: }
1795: if (ref($trustconfig)) {
1796: my (%possexc,%possinc,@allexc,@allinc);
1797: if (ref($trustconfig->{$cmdtype}) eq 'HASH') {
1798: if (ref($trustconfig->{$cmdtype}->{'exc'}) eq 'ARRAY') {
1799: map { $possexc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'exc'}};
1800: }
1801: if (ref($trustconfig->{$cmdtype}->{'inc'}) eq 'ARRAY') {
1802: $possinc{$intcalldom} = 1;
1803: map { $possinc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'inc'}};
1804: }
1805: }
1806: if (keys(%possexc)) {
1807: if (keys(%possinc)) {
1808: foreach my $key (sort(keys(%possexc))) {
1809: next if ($key eq $intcalldom);
1810: unless ($possinc{$key}) {
1811: push(@allexc,$key);
1812: }
1813: }
1814: } else {
1815: @allexc = sort(keys(%possexc));
1816: }
1817: }
1818: if (keys(%possinc)) {
1819: $possinc{$intcalldom} = 1;
1820: @allinc = sort(keys(%possinc));
1821: }
1822: if ((@allexc > 0) || (@allinc > 0)) {
1823: my %doms_by_intdom;
1824: my %allintdoms = &all_host_intdom();
1825: my %alldoms = &all_host_domain();
1826: foreach my $key (%allintdoms) {
1827: if (ref($doms_by_intdom{$allintdoms{$key}}) eq 'ARRAY') {
1828: unless (grep(/^\Q$alldoms{$key}\E$/,@{$doms_by_intdom{$allintdoms{$key}}})) {
1829: push(@{$doms_by_intdom{$allintdoms{$key}}},$alldoms{$key});
1830: }
1831: } else {
1832: $doms_by_intdom{$allintdoms{$key}} = [$alldoms{$key}];
1833: }
1834: }
1835: foreach my $exc (@allexc) {
1836: if (ref($doms_by_intdom{$exc}) eq 'ARRAY') {
1837: push(@{$untrusted},@{$doms_by_intdom{$exc}});
1838: }
1839: }
1840: foreach my $inc (@allinc) {
1841: if (ref($doms_by_intdom{$inc}) eq 'ARRAY') {
1842: push(@{$trusted},@{$doms_by_intdom{$inc}});
1843: }
1844: }
1845: }
1846: }
1847: return ($trusted,$untrusted);
1848: }
1849:
1850: sub will_trust {
1851: my ($cmdtype,$domain,$possdom) = @_;
1852: return 1 if ($domain eq $possdom);
1853: my ($trustedref,$untrustedref) = &trusted_domains($cmdtype,$possdom);
1854: my $willtrust;
1855: if ((ref($trustedref) eq 'ARRAY') && (@{$trustedref} > 0)) {
1856: if (grep(/^\Q$domain\E$/,@{$trustedref})) {
1857: $willtrust = 1;
1858: }
1859: } elsif ((ref($untrustedref) eq 'ARRAY') && (@{$untrustedref} > 0)) {
1860: unless (grep(/^\Q$domain\E$/,@{$untrustedref})) {
1861: $willtrust = 1;
1862: }
1863: } else {
1864: $willtrust = 1;
1865: }
1866: return $willtrust;
1867: }
1868:
1869: # ---------------------- Find the homebase for a user from domain's lib servers
1870:
1871: my %homecache;
1872: sub homeserver {
1873: my ($uname,$udom,$ignoreBadCache)=@_;
1874: my $index="$uname:$udom";
1875:
1876: if (exists($homecache{$index})) { return $homecache{$index}; }
1877:
1878: my %servers = &get_servers($udom,'library');
1879: foreach my $tryserver (keys(%servers)) {
1880: next if ($ignoreBadCache ne 'true' &&
1881: exists($badServerCache{$tryserver}));
1882:
1883: my $answer=reply("home:$udom:$uname",$tryserver);
1884: if ($answer eq 'found') {
1885: delete($badServerCache{$tryserver});
1886: return $homecache{$index}=$tryserver;
1887: } elsif ($answer eq 'no_host') {
1888: $badServerCache{$tryserver}=1;
1889: }
1890: }
1891: return 'no_host';
1892: }
1893:
1894: # ----- Find the usernames behind a list of student/employee IDs or clicker IDs
1895:
1896: sub idget {
1897: my ($udom,$idsref,$namespace)=@_;
1898: my %returnhash=();
1899: my @ids=();
1900: if (ref($idsref) eq 'ARRAY') {
1901: @ids = @{$idsref};
1902: } else {
1903: return %returnhash;
1904: }
1905: if ($namespace eq '') {
1906: $namespace = 'ids';
1907: }
1908:
1909: my %servers = &get_servers($udom,'library');
1910: foreach my $tryserver (keys(%servers)) {
1911: my $idlist=join('&', map { &escape($_); } @ids);
1912: if ($namespace eq 'ids') {
1913: $idlist=~tr/A-Z/a-z/;
1914: }
1915: my $reply;
1916: if ($namespace eq 'ids') {
1917: $reply=&reply("idget:$udom:".$idlist,$tryserver);
1918: } else {
1919: $reply=&reply("getdom:$udom:$namespace:$idlist",$tryserver);
1920: }
1921: my @answer=();
1922: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1923: @answer=split(/\&/,$reply);
1924: } ;
1925: my $i;
1926: for ($i=0;$i<=$#ids;$i++) {
1927: if ($answer[$i]) {
1928: $returnhash{$ids[$i]}=&unescape($answer[$i]);
1929: }
1930: }
1931: }
1932: return %returnhash;
1933: }
1934:
1935: # ------------------------------------- Find the IDs behind a list of usernames
1936:
1937: sub idrget {
1938: my ($udom,@unames)=@_;
1939: my %returnhash=();
1940: foreach my $uname (@unames) {
1941: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1942: }
1943: return %returnhash;
1944: }
1945:
1946: # Store away a list of names and associated student/employee IDs or clicker IDs
1947:
1948: sub idput {
1949: my ($udom,$idsref,$uhom,$namespace)=@_;
1950: my %servers=();
1951: my %ids=();
1952: my %byid = ();
1953: if (ref($idsref) eq 'HASH') {
1954: %ids=%{$idsref};
1955: }
1956: if ($namespace eq '') {
1957: $namespace = 'ids';
1958: }
1959: foreach my $uname (keys(%ids)) {
1960: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1961: if ($uhom eq '') {
1962: $uhom=&homeserver($uname,$udom);
1963: }
1964: if ($uhom ne 'no_host') {
1965: my $esc_unam=&escape($uname);
1966: if ($namespace eq 'ids') {
1967: my $id=&escape($ids{$uname});
1968: $id=~tr/A-Z/a-z/;
1969: my $esc_unam=&escape($uname);
1970: $servers{$uhom}.=$id.'='.$esc_unam.'&';
1971: } else {
1972: my @currids = split(/,/,$ids{$uname});
1973: foreach my $id (@currids) {
1974: $byid{$uhom}{$id} .= $uname.',';
1975: }
1976: }
1977: }
1978: }
1979: if ($namespace eq 'clickers') {
1980: foreach my $server (keys(%byid)) {
1981: if (ref($byid{$server}) eq 'HASH') {
1982: foreach my $id (keys(%{$byid{$server}})) {
1983: $byid{$server} =~ s/,$//;
1984: $servers{$uhom}.=&escape($id).'='.&escape($byid{$server}).'&';
1985: }
1986: }
1987: }
1988: }
1989: foreach my $server (keys(%servers)) {
1990: $servers{$server} =~ s/\&$//;
1991: if ($namespace eq 'ids') {
1992: &critical('idput:'.$udom.':'.$servers{$server},$server);
1993: } else {
1994: &critical('updateclickers:'.$udom.':add:'.$servers{$server},$server);
1995: }
1996: }
1997: }
1998:
1999: # ------------- Delete unwanted student/employee IDs or clicker IDs from domain
2000:
2001: sub iddel {
2002: my ($udom,$idshashref,$uhome,$namespace)=@_;
2003: my %result=();
2004: my %ids=();
2005: my %byid = ();
2006: if (ref($idshashref) eq 'HASH') {
2007: %ids=%{$idshashref};
2008: } else {
2009: return %result;
2010: }
2011: if ($namespace eq '') {
2012: $namespace = 'ids';
2013: }
2014: my %servers=();
2015: while (my ($id,$unamestr) = each(%ids)) {
2016: if ($namespace eq 'ids') {
2017: my $uhom = $uhome;
2018: if ($uhom eq '') {
2019: $uhom=&homeserver($unamestr,$udom);
2020: }
2021: if ($uhom ne 'no_host') {
2022: $servers{$uhom}.='&'.&escape($id);
2023: }
2024: } else {
2025: my @curritems = split(/,/,$ids{$id});
2026: foreach my $uname (@curritems) {
2027: my $uhom = $uhome;
2028: if ($uhom eq '') {
2029: $uhom=&homeserver($uname,$udom);
2030: }
2031: if ($uhom ne 'no_host') {
2032: $byid{$uhom}{$id} .= $uname.',';
2033: }
2034: }
2035: }
2036: }
2037: if ($namespace eq 'clickers') {
2038: foreach my $server (keys(%byid)) {
2039: if (ref($byid{$server}) eq 'HASH') {
2040: foreach my $id (keys(%{$byid{$server}})) {
2041: $byid{$server}{$id} =~ s/,$//;
2042: $servers{$server}.=&escape($id).'='.&escape($byid{$server}{$id}).'&';
2043: }
2044: }
2045: }
2046: }
2047: foreach my $server (keys(%servers)) {
2048: $servers{$server} =~ s/\&$//;
2049: if ($namespace eq 'ids') {
2050: $result{$server} = &critical('iddel:'.$udom.':'.$servers{$server},$uhome);
2051: } elsif ($namespace eq 'clickers') {
2052: $result{$server} = &critical('updateclickers:'.$udom.':del:'.$servers{$server},$server);
2053: }
2054: }
2055: return %result;
2056: }
2057:
2058: # ----- Update clicker ID-to-username look-ups in clickers.db on library server
2059:
2060: sub updateclickers {
2061: my ($udom,$action,$idshashref,$uhome,$critical) = @_;
2062: my %clickers;
2063: if (ref($idshashref) eq 'HASH') {
2064: %clickers=%{$idshashref};
2065: } else {
2066: return;
2067: }
2068: my $items='';
2069: foreach my $item (keys(%clickers)) {
2070: $items.=&escape($item).'='.&escape($clickers{$item}).'&';
2071: }
2072: $items=~s/\&$//;
2073: my $request = "updateclickers:$udom:$action:$items";
2074: if ($critical) {
2075: return &critical($request,$uhome);
2076: } else {
2077: return &reply($request,$uhome);
2078: }
2079: }
2080:
2081: # ------------------------------dump from db file owned by domainconfig user
2082: sub dump_dom {
2083: my ($namespace, $udom, $regexp) = @_;
2084:
2085: $udom ||= $env{'user.domain'};
2086:
2087: return () unless $udom;
2088:
2089: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
2090: }
2091:
2092: # ------------------------------------------ get items from domain db files
2093:
2094: sub get_dom {
2095: my ($namespace,$storearr,$udom,$uhome)=@_;
2096: return if ($udom eq 'public');
2097: my $items='';
2098: foreach my $item (@$storearr) {
2099: $items.=&escape($item).'&';
2100: }
2101: $items=~s/\&$//;
2102: if (!$udom) {
2103: $udom=$env{'user.domain'};
2104: return if ($udom eq 'public');
2105: if (defined(&domain($udom,'primary'))) {
2106: $uhome=&domain($udom,'primary');
2107: } else {
2108: undef($uhome);
2109: }
2110: } else {
2111: if (!$uhome) {
2112: if (defined(&domain($udom,'primary'))) {
2113: $uhome=&domain($udom,'primary');
2114: }
2115: }
2116: }
2117: if ($udom && $uhome && ($uhome ne 'no_host')) {
2118: my $rep;
2119: if ($namespace =~ /^enc/) {
2120: $rep=&reply("encrypt:egetdom:$udom:$namespace:$items",$uhome);
2121: } else {
2122: $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
2123: }
2124: my %returnhash;
2125: if ($rep eq '' || $rep =~ /^error: 2 /) {
2126: return %returnhash;
2127: }
2128: my @pairs=split(/\&/,$rep);
2129: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
2130: return @pairs;
2131: }
2132: my $i=0;
2133: foreach my $item (@$storearr) {
2134: $returnhash{$item}=&thaw_unescape($pairs[$i]);
2135: $i++;
2136: }
2137: return %returnhash;
2138: } else {
2139: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
2140: }
2141: }
2142:
2143: # -------------------------------------------- put items in domain db files
2144:
2145: sub put_dom {
2146: my ($namespace,$storehash,$udom,$uhome)=@_;
2147: if (!$udom) {
2148: $udom=$env{'user.domain'};
2149: if (defined(&domain($udom,'primary'))) {
2150: $uhome=&domain($udom,'primary');
2151: } else {
2152: undef($uhome);
2153: }
2154: } else {
2155: if (!$uhome) {
2156: if (defined(&domain($udom,'primary'))) {
2157: $uhome=&domain($udom,'primary');
2158: }
2159: }
2160: }
2161: if ($udom && $uhome && ($uhome ne 'no_host')) {
2162: my $items='';
2163: foreach my $item (keys(%$storehash)) {
2164: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
2165: }
2166: $items=~s/\&$//;
2167: if ($namespace =~ /^enc/) {
2168: return &reply("encrypt:putdom:$udom:$namespace:$items",$uhome);
2169: } else {
2170: return &reply("putdom:$udom:$namespace:$items",$uhome);
2171: }
2172: } else {
2173: &logthis("put_dom failed - no homeserver and/or domain");
2174: }
2175: }
2176:
2177: # --------------------- newput for items in db file owned by domainconfig user
2178: sub newput_dom {
2179: my ($namespace,$storehash,$udom) = @_;
2180: my $result;
2181: if (!$udom) {
2182: $udom=$env{'user.domain'};
2183: }
2184: if ($udom) {
2185: my $uname = &get_domainconfiguser($udom);
2186: $result = &newput($namespace,$storehash,$udom,$uname);
2187: }
2188: return $result;
2189: }
2190:
2191: # --------------------- delete for items in db file owned by domainconfig user
2192: sub del_dom {
2193: my ($namespace,$storearr,$udom)=@_;
2194: if (ref($storearr) eq 'ARRAY') {
2195: if (!$udom) {
2196: $udom=$env{'user.domain'};
2197: }
2198: if ($udom) {
2199: my $uname = &get_domainconfiguser($udom);
2200: return &del($namespace,$storearr,$udom,$uname);
2201: }
2202: }
2203: }
2204:
2205: # ----------------------------------construct domainconfig user for a domain
2206: sub get_domainconfiguser {
2207: my ($udom) = @_;
2208: return $udom.'-domainconfig';
2209: }
2210:
2211: sub retrieve_inst_usertypes {
2212: my ($udom) = @_;
2213: my (%returnhash,@order);
2214: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
2215: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
2216: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
2217: return ($domdefs{'inststatustypes'},$domdefs{'inststatusorder'});
2218: } else {
2219: if (defined(&domain($udom,'primary'))) {
2220: my $uhome=&domain($udom,'primary');
2221: my $rep=&reply("inst_usertypes:$udom",$uhome);
2222: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
2223: &logthis("retrieve_inst_usertypes failed - $rep returned from $uhome in domain: $udom");
2224: return (\%returnhash,\@order);
2225: }
2226: my ($hashitems,$orderitems) = split(/:/,$rep);
2227: my @pairs=split(/\&/,$hashitems);
2228: foreach my $item (@pairs) {
2229: my ($key,$value)=split(/=/,$item,2);
2230: $key = &unescape($key);
2231: next if ($key =~ /^error: 2 /);
2232: $returnhash{$key}=&thaw_unescape($value);
2233: }
2234: my @esc_order = split(/\&/,$orderitems);
2235: foreach my $item (@esc_order) {
2236: push(@order,&unescape($item));
2237: }
2238: } else {
2239: &logthis("retrieve_inst_usertypes failed - no primary domain server for $udom");
2240: }
2241: return (\%returnhash,\@order);
2242: }
2243: }
2244:
2245: sub is_domainimage {
2246: my ($url) = @_;
2247: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+[^/]-) {
2248: if (&domain($1) ne '') {
2249: return '1';
2250: }
2251: }
2252: return;
2253: }
2254:
2255: sub inst_directory_query {
2256: my ($srch) = @_;
2257: my $udom = $srch->{'srchdomain'};
2258: my %results;
2259: my $homeserver = &domain($udom,'primary');
2260: my $outcome;
2261: if ($homeserver ne '') {
2262: unless ($homeserver eq $perlvar{'lonHostID'}) {
2263: if ($srch->{'srchby'} eq 'email') {
2264: my $lcrev = &get_server_loncaparev(undef,$homeserver);
2265: my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
2266: if (($major eq '' && $minor eq '') || ($major < 2) ||
2267: (($major == 2) && ($minor < 12))) {
2268: return;
2269: }
2270: }
2271: }
2272: my $queryid=&reply("querysend:instdirsearch:".
2273: &escape($srch->{'srchby'}).':'.
2274: &escape($srch->{'srchterm'}).':'.
2275: &escape($srch->{'srchtype'}),$homeserver);
2276: my $host=&hostname($homeserver);
2277: if ($queryid !~/^\Q$host\E\_/) {
2278: &logthis('institutional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.' in domain '.$udom);
2279: return;
2280: }
2281: my $response = &get_query_reply($queryid);
2282: my $maxtries = 5;
2283: my $tries = 1;
2284: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2285: $response = &get_query_reply($queryid);
2286: $tries ++;
2287: }
2288:
2289: if (!&error($response) && $response ne 'refused') {
2290: if ($response eq 'unavailable') {
2291: $outcome = $response;
2292: } else {
2293: $outcome = 'ok';
2294: my @matches = split(/\n/,$response);
2295: foreach my $match (@matches) {
2296: my ($key,$value) = split(/=/,$match);
2297: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
2298: }
2299: }
2300: }
2301: }
2302: return ($outcome,%results);
2303: }
2304:
2305: sub usersearch {
2306: my ($srch) = @_;
2307: my $dom = $srch->{'srchdomain'};
2308: my %results;
2309: my %libserv = &all_library();
2310: my $query = 'usersearch';
2311: foreach my $tryserver (keys(%libserv)) {
2312: if (&host_domain($tryserver) eq $dom) {
2313: unless ($tryserver eq $perlvar{'lonHostID'}) {
2314: if ($srch->{'srchby'} eq 'email') {
2315: my $lcrev = &get_server_loncaparev(undef,$tryserver);
2316: my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
2317: next if (($major eq '' && $minor eq '') || ($major < 2) ||
2318: (($major == 2) && ($minor < 12)));
2319: }
2320: }
2321: my $host=&hostname($tryserver);
2322: my $queryid=
2323: &reply("querysend:".&escape($query).':'.
2324: &escape($srch->{'srchby'}).':'.
2325: &escape($srch->{'srchtype'}).':'.
2326: &escape($srch->{'srchterm'}),$tryserver);
2327: if ($queryid !~/^\Q$host\E\_/) {
2328: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
2329: next;
2330: }
2331: my $reply = &get_query_reply($queryid);
2332: my $maxtries = 1;
2333: my $tries = 1;
2334: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
2335: $reply = &get_query_reply($queryid);
2336: $tries ++;
2337: }
2338: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
2339: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
2340: } else {
2341: my @matches;
2342: if ($reply =~ /\n/) {
2343: @matches = split(/\n/,$reply);
2344: } else {
2345: @matches = split(/\&/,$reply);
2346: }
2347: foreach my $match (@matches) {
2348: my ($uname,$udom,%userhash);
2349: foreach my $entry (split(/:/,$match)) {
2350: my ($key,$value) =
2351: map {&unescape($_);} split(/=/,$entry);
2352: $userhash{$key} = $value;
2353: if ($key eq 'username') {
2354: $uname = $value;
2355: } elsif ($key eq 'domain') {
2356: $udom = $value;
2357: }
2358: }
2359: $results{$uname.':'.$udom} = \%userhash;
2360: }
2361: }
2362: }
2363: }
2364: return %results;
2365: }
2366:
2367: sub get_instuser {
2368: my ($udom,$uname,$id) = @_;
2369: my $homeserver = &domain($udom,'primary');
2370: my ($outcome,%results);
2371: if ($homeserver ne '') {
2372: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
2373: &escape($id).':'.&escape($udom),$homeserver);
2374: my $host=&hostname($homeserver);
2375: if ($queryid !~/^\Q$host\E\_/) {
2376: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
2377: return;
2378: }
2379: my $response = &get_query_reply($queryid);
2380: my $maxtries = 5;
2381: my $tries = 1;
2382: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2383: $response = &get_query_reply($queryid);
2384: $tries ++;
2385: }
2386: if (!&error($response) && $response ne 'refused') {
2387: if ($response eq 'unavailable') {
2388: $outcome = $response;
2389: } else {
2390: $outcome = 'ok';
2391: my @matches = split(/\n/,$response);
2392: foreach my $match (@matches) {
2393: my ($key,$value) = split(/=/,$match);
2394: $results{&unescape($key)} = &thaw_unescape($value);
2395: }
2396: }
2397: }
2398: }
2399: my %userinfo;
2400: if (ref($results{$uname}) eq 'HASH') {
2401: %userinfo = %{$results{$uname}};
2402: }
2403: return ($outcome,%userinfo);
2404: }
2405:
2406: sub get_multiple_instusers {
2407: my ($udom,$users,$caller) = @_;
2408: my ($outcome,$results);
2409: if (ref($users) eq 'HASH') {
2410: my $count = keys(%{$users});
2411: my $requested = &freeze_escape($users);
2412: my $homeserver = &domain($udom,'primary');
2413: if ($homeserver ne '') {
2414: my $queryid=&reply('querysend:getmultinstusers:::'.$caller.'='.$requested,$homeserver);
2415: my $host=&hostname($homeserver);
2416: if ($queryid !~/^\Q$host\E\_/) {
2417: &logthis('get_multiple_instusers invalid queryid: '.$queryid.
2418: ' for host: '.$homeserver.'in domain '.$udom);
2419: return ($outcome,$results);
2420: }
2421: my $response = &get_query_reply($queryid);
2422: my $maxtries = 5;
2423: if ($count > 100) {
2424: $maxtries = 1+int($count/20);
2425: }
2426: my $tries = 1;
2427: while (($response=~/^timeout/) && ($tries <= $maxtries)) {
2428: $response = &get_query_reply($queryid);
2429: $tries ++;
2430: }
2431: if ($response eq '') {
2432: $results = {};
2433: foreach my $key (keys(%{$users})) {
2434: my ($uname,$id);
2435: if ($caller eq 'id') {
2436: $id = $key;
2437: } else {
2438: $uname = $key;
2439: }
2440: my ($resp,%info) = &get_instuser($udom,$uname,$id);
2441: $outcome = $resp;
2442: if ($resp eq 'ok') {
2443: %{$results} = (%{$results}, %info);
2444: } else {
2445: last;
2446: }
2447: }
2448: } elsif(!&error($response) && ($response ne 'refused')) {
2449: if (($response eq 'unavailable') || ($response eq 'invalid') || ($response eq 'timeout')) {
2450: $outcome = $response;
2451: } else {
2452: ($outcome,my $userdata) = split(/=/,$response,2);
2453: if ($outcome eq 'ok') {
2454: $results = &thaw_unescape($userdata);
2455: }
2456: }
2457: }
2458: }
2459: }
2460: return ($outcome,$results);
2461: }
2462:
2463: sub inst_rulecheck {
2464: my ($udom,$uname,$id,$item,$rules) = @_;
2465: my %returnhash;
2466: if ($udom ne '') {
2467: if (ref($rules) eq 'ARRAY') {
2468: @{$rules} = map {&escape($_);} (@{$rules});
2469: my $rulestr = join(':',@{$rules});
2470: my $homeserver=&domain($udom,'primary');
2471: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2472: my $response;
2473: if ($item eq 'username') {
2474: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
2475: ':'.&escape($uname).':'.$rulestr,
2476: $homeserver));
2477: } elsif ($item eq 'id') {
2478: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
2479: ':'.&escape($id).':'.$rulestr,
2480: $homeserver));
2481: } elsif ($item eq 'selfcreate') {
2482: $response=&unescape(&reply('instselfcreatecheck:'.
2483: &escape($udom).':'.&escape($uname).
2484: ':'.$rulestr,$homeserver));
2485: }
2486: if ($response ne 'refused') {
2487: my @pairs=split(/\&/,$response);
2488: foreach my $item (@pairs) {
2489: my ($key,$value)=split(/=/,$item,2);
2490: $key = &unescape($key);
2491: next if ($key =~ /^error: 2 /);
2492: $returnhash{$key}=&thaw_unescape($value);
2493: }
2494: }
2495: }
2496: }
2497: }
2498: return %returnhash;
2499: }
2500:
2501: sub inst_userrules {
2502: my ($udom,$check) = @_;
2503: my (%ruleshash,@ruleorder);
2504: if ($udom ne '') {
2505: my $homeserver=&domain($udom,'primary');
2506: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2507: my $response;
2508: if ($check eq 'id') {
2509: $response=&reply('instidrules:'.&escape($udom),
2510: $homeserver);
2511: } elsif ($check eq 'email') {
2512: $response=&reply('instemailrules:'.&escape($udom),
2513: $homeserver);
2514: } else {
2515: $response=&reply('instuserrules:'.&escape($udom),
2516: $homeserver);
2517: }
2518: if (($response ne 'refused') && ($response ne 'error') &&
2519: ($response ne 'unknown_cmd') &&
2520: ($response ne 'no_such_host')) {
2521: my ($hashitems,$orderitems) = split(/:/,$response);
2522: my @pairs=split(/\&/,$hashitems);
2523: foreach my $item (@pairs) {
2524: my ($key,$value)=split(/=/,$item,2);
2525: $key = &unescape($key);
2526: next if ($key =~ /^error: 2 /);
2527: $ruleshash{$key}=&thaw_unescape($value);
2528: }
2529: my @esc_order = split(/\&/,$orderitems);
2530: foreach my $item (@esc_order) {
2531: push(@ruleorder,&unescape($item));
2532: }
2533: }
2534: }
2535: }
2536: return (\%ruleshash,\@ruleorder);
2537: }
2538:
2539: # ------------- Get Authentication, Language and User Tools Defaults for Domain
2540:
2541: sub get_domain_defaults {
2542: my ($domain,$ignore_cache) = @_;
2543: return if (($domain eq '') || ($domain eq 'public'));
2544: my $cachetime = 60*60*24;
2545: unless ($ignore_cache) {
2546: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
2547: if (defined($cached)) {
2548: if (ref($result) eq 'HASH') {
2549: return %{$result};
2550: }
2551: }
2552: }
2553: my %domdefaults;
2554: my %domconfig =
2555: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
2556: 'requestcourses','inststatus',
2557: 'coursedefaults','usersessions',
2558: 'requestauthor','selfenrollment',
2559: 'coursecategories','ssl','autoenroll',
2560: 'trust','helpsettings'],$domain);
2561: my @coursetypes = ('official','unofficial','community','textbook','placement');
2562: if (ref($domconfig{'defaults'}) eq 'HASH') {
2563: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
2564: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
2565: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
2566: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
2567: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
2568: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
2569: $domdefaults{'intauth_cost'} = $domconfig{'defaults'}{'intauth_cost'};
2570: $domdefaults{'intauth_switch'} = $domconfig{'defaults'}{'intauth_switch'};
2571: $domdefaults{'intauth_check'} = $domconfig{'defaults'}{'intauth_check'};
2572: } else {
2573: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
2574: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
2575: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
2576: }
2577: if (ref($domconfig{'quotas'}) eq 'HASH') {
2578: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
2579: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
2580: } else {
2581: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
2582: }
2583: my @usertools = ('aboutme','blog','webdav','portfolio');
2584: foreach my $item (@usertools) {
2585: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
2586: $domdefaults{$item} = $domconfig{'quotas'}{$item};
2587: }
2588: }
2589: if (ref($domconfig{'quotas'}{'authorquota'}) eq 'HASH') {
2590: $domdefaults{'authorquota'} = $domconfig{'quotas'}{'authorquota'};
2591: }
2592: }
2593: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
2594: foreach my $item ('official','unofficial','community','textbook','placement') {
2595: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
2596: }
2597: }
2598: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
2599: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
2600: }
2601: if (ref($domconfig{'inststatus'}) eq 'HASH') {
2602: foreach my $item ('inststatustypes','inststatusorder','inststatusguest') {
2603: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2604: }
2605: }
2606: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2607: $domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
2608: $domdefaults{'usejsme'} = $domconfig{'coursedefaults'}{'usejsme'};
2609: $domdefaults{'uselcmath'} = $domconfig{'coursedefaults'}{'uselcmath'};
2610: if (ref($domconfig{'coursedefaults'}{'postsubmit'}) eq 'HASH') {
2611: $domdefaults{'postsubmit'} = $domconfig{'coursedefaults'}{'postsubmit'}{'client'};
2612: }
2613: foreach my $type (@coursetypes) {
2614: if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
2615: unless ($type eq 'community') {
2616: $domdefaults{$type.'credits'} = $domconfig{'coursedefaults'}{'coursecredits'}{$type};
2617: }
2618: }
2619: if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
2620: $domdefaults{$type.'quota'} = $domconfig{'coursedefaults'}{'uploadquota'}{$type};
2621: }
2622: if ($domdefaults{'postsubmit'} eq 'on') {
2623: if (ref($domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}) eq 'HASH') {
2624: $domdefaults{$type.'postsubtimeout'} =
2625: $domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}{$type};
2626: }
2627: }
2628: }
2629: if (ref($domconfig{'coursedefaults'}{'canclone'}) eq 'HASH') {
2630: if (ref($domconfig{'coursedefaults'}{'canclone'}{'instcode'}) eq 'ARRAY') {
2631: my @clonecodes = @{$domconfig{'coursedefaults'}{'canclone'}{'instcode'}};
2632: if (@clonecodes) {
2633: $domdefaults{'canclone'} = join('+',@clonecodes);
2634: }
2635: }
2636: } elsif ($domconfig{'coursedefaults'}{'canclone'}) {
2637: $domdefaults{'canclone'}=$domconfig{'coursedefaults'}{'canclone'};
2638: }
2639: if ($domconfig{'coursedefaults'}{'texengine'}) {
2640: $domdefaults{'texengine'} = $domconfig{'coursedefaults'}{'texengine'};
2641: }
2642: }
2643: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2644: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2645: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2646: }
2647: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2648: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2649: }
2650: if (ref($domconfig{'usersessions'}{'offloadnow'}) eq 'HASH') {
2651: $domdefaults{'offloadnow'} = $domconfig{'usersessions'}{'offloadnow'};
2652: }
2653: }
2654: if (ref($domconfig{'selfenrollment'}) eq 'HASH') {
2655: if (ref($domconfig{'selfenrollment'}{'admin'}) eq 'HASH') {
2656: my @settings = ('types','registered','enroll_dates','access_dates','section',
2657: 'approval','limit');
2658: foreach my $type (@coursetypes) {
2659: if (ref($domconfig{'selfenrollment'}{'admin'}{$type}) eq 'HASH') {
2660: my @mgrdc = ();
2661: foreach my $item (@settings) {
2662: if ($domconfig{'selfenrollment'}{'admin'}{$type}{$item} eq '0') {
2663: push(@mgrdc,$item);
2664: }
2665: }
2666: if (@mgrdc) {
2667: $domdefaults{$type.'selfenrolladmdc'} = join(',',@mgrdc);
2668: }
2669: }
2670: }
2671: }
2672: if (ref($domconfig{'selfenrollment'}{'default'}) eq 'HASH') {
2673: foreach my $type (@coursetypes) {
2674: if (ref($domconfig{'selfenrollment'}{'default'}{$type}) eq 'HASH') {
2675: foreach my $item (keys(%{$domconfig{'selfenrollment'}{'default'}{$type}})) {
2676: $domdefaults{$type.'selfenroll'.$item} = $domconfig{'selfenrollment'}{'default'}{$type}{$item};
2677: }
2678: }
2679: }
2680: }
2681: }
2682: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
2683: $domdefaults{'catauth'} = 'std';
2684: $domdefaults{'catunauth'} = 'std';
2685: if ($domconfig{'coursecategories'}{'auth'}) {
2686: $domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};
2687: }
2688: if ($domconfig{'coursecategories'}{'unauth'}) {
2689: $domdefaults{'catunauth'} = $domconfig{'coursecategories'}{'unauth'};
2690: }
2691: }
2692: if (ref($domconfig{'ssl'}) eq 'HASH') {
2693: if (ref($domconfig{'ssl'}{'replication'}) eq 'HASH') {
2694: $domdefaults{'replication'} = $domconfig{'ssl'}{'replication'};
2695: }
2696: if (ref($domconfig{'ssl'}{'connto'}) eq 'HASH') {
2697: $domdefaults{'connect'} = $domconfig{'ssl'}{'connto'};
2698: }
2699: if (ref($domconfig{'ssl'}{'connfrom'}) eq 'HASH') {
2700: $domdefaults{'connect'} = $domconfig{'ssl'}{'connfrom'};
2701: }
2702: }
2703: if (ref($domconfig{'trust'}) eq 'HASH') {
2704: my @prefixes = qw(content shared enroll othcoau coaurem domroles catalog reqcrs msg);
2705: foreach my $prefix (@prefixes) {
2706: if (ref($domconfig{'trust'}{$prefix}) eq 'HASH') {
2707: $domdefaults{'trust'.$prefix} = $domconfig{'trust'}{$prefix};
2708: }
2709: }
2710: }
2711: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
2712: $domdefaults{'autofailsafe'} = $domconfig{'autoenroll'}{'autofailsafe'};
2713: }
2714: if (ref($domconfig{'helpsettings'}) eq 'HASH') {
2715: $domdefaults{'submitbugs'} = $domconfig{'helpsettings'}{'submitbugs'};
2716: if (ref($domconfig{'helpsettings'}{'adhoc'}) eq 'HASH') {
2717: $domdefaults{'adhocroles'} = $domconfig{'helpsettings'}{'adhoc'};
2718: }
2719: }
2720: &do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
2721: return %domdefaults;
2722: }
2723:
2724: sub course_portal_url {
2725: my ($cnum,$cdom) = @_;
2726: my $chome = &homeserver($cnum,$cdom);
2727: my $hostname = &hostname($chome);
2728: my $protocol = $protocol{$chome};
2729: $protocol = 'http' if ($protocol ne 'https');
2730: my %domdefaults = &get_domain_defaults($cdom);
2731: my $firsturl;
2732: if ($domdefaults{'portal_def'}) {
2733: $firsturl = $domdefaults{'portal_def'};
2734: } else {
2735: $firsturl = $protocol.'://'.$hostname;
2736: }
2737: return $firsturl;
2738: }
2739:
2740: # --------------------------------------------- Get domain config for passwords
2741:
2742: sub get_passwdconf {
2743: my ($dom) = @_;
2744: my (%passwdconf,$gotconf,$lookup);
2745: my ($result,$cached)=&is_cached_new('passwdconf',$dom);
2746: if (defined($cached)) {
2747: if (ref($result) eq 'HASH') {
2748: %passwdconf = %{$result};
2749: $gotconf = 1;
2750: }
2751: }
2752: unless ($gotconf) {
2753: my %domconfig = &get_dom('configuration',['passwords'],$dom);
2754: if (ref($domconfig{'passwords'}) eq 'HASH') {
2755: %passwdconf = %{$domconfig{'passwords'}};
2756: }
2757: my $cachetime = 24*60*60;
2758: &do_cache_new('passwdconf',$dom,\%passwdconf,$cachetime);
2759: }
2760: return %passwdconf;
2761: }
2762:
2763: # --------------------------------------------------- Assign a key to a student
2764:
2765: sub assign_access_key {
2766: #
2767: # a valid key looks like uname:udom#comments
2768: # comments are being appended
2769: #
2770: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2771: $kdom=
2772: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2773: $knum=
2774: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2775: $cdom=
2776: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2777: $cnum=
2778: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2779: $udom=$env{'user.name'} unless (defined($udom));
2780: $uname=$env{'user.domain'} unless (defined($uname));
2781: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2782: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2783: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2784: # assigned to this person
2785: # - this should not happen,
2786: # unless something went wrong
2787: # the first time around
2788: # ready to assign
2789: $logentry=$1.'; '.$logentry;
2790: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2791: $kdom,$knum) eq 'ok') {
2792: # key now belongs to user
2793: my $envkey='key.'.$cdom.'_'.$cnum;
2794: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2795: &appenv({'environment.'.$envkey => $ckey});
2796: return 'ok';
2797: } else {
2798: return
2799: 'error: Count not permanently assign key, will need to be re-entered later.';
2800: }
2801: } else {
2802: return 'error: Could not assign key, try again later.';
2803: }
2804: } elsif (!$existing{$ckey}) {
2805: # the key does not exist
2806: return 'error: The key does not exist';
2807: } else {
2808: # the key is somebody else's
2809: return 'error: The key is already in use';
2810: }
2811: }
2812:
2813: # ------------------------------------------ put an additional comment on a key
2814:
2815: sub comment_access_key {
2816: #
2817: # a valid key looks like uname:udom#comments
2818: # comments are being appended
2819: #
2820: my ($ckey,$cdom,$cnum,$logentry)=@_;
2821: $cdom=
2822: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2823: $cnum=
2824: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2825: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2826: if ($existing{$ckey}) {
2827: $existing{$ckey}.='; '.$logentry;
2828: # ready to assign
2829: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2830: $cdom,$cnum) eq 'ok') {
2831: return 'ok';
2832: } else {
2833: return 'error: Count not store comment.';
2834: }
2835: } else {
2836: # the key does not exist
2837: return 'error: The key does not exist';
2838: }
2839: }
2840:
2841: # ------------------------------------------------------ Generate a set of keys
2842:
2843: sub generate_access_keys {
2844: my ($number,$cdom,$cnum,$logentry)=@_;
2845: $cdom=
2846: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2847: $cnum=
2848: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2849: unless (&allowed('mky',$cdom)) { return 0; }
2850: unless (($cdom) && ($cnum)) { return 0; }
2851: if ($number>10000) { return 0; }
2852: sleep(2); # make sure don't get same seed twice
2853: srand(time()^($$+($$<<15))); # from "Programming Perl"
2854: my $total=0;
2855: for (my $i=1;$i<=$number;$i++) {
2856: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2857: sprintf("%lx",int(100000*rand)).'-'.
2858: sprintf("%lx",int(100000*rand));
2859: $newkey=~s/1/g/g; # folks mix up 1 and l
2860: $newkey=~s/0/h/g; # and also 0 and O
2861: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2862: if ($existing{$newkey}) {
2863: $i--;
2864: } else {
2865: if (&put('accesskeys',
2866: { $newkey => '# generated '.localtime().
2867: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2868: '; '.$logentry },
2869: $cdom,$cnum) eq 'ok') {
2870: $total++;
2871: }
2872: }
2873: }
2874: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2875: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2876: return $total;
2877: }
2878:
2879: # ------------------------------------------------------- Validate an accesskey
2880:
2881: sub validate_access_key {
2882: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2883: $cdom=
2884: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2885: $cnum=
2886: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2887: $udom=$env{'user.domain'} unless (defined($udom));
2888: $uname=$env{'user.name'} unless (defined($uname));
2889: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2890: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2891: }
2892:
2893: # ------------------------------------- Find the section of student in a course
2894: sub devalidate_getsection_cache {
2895: my ($udom,$unam,$courseid)=@_;
2896: my $hashid="$udom:$unam:$courseid";
2897: &devalidate_cache_new('getsection',$hashid);
2898: }
2899:
2900: sub courseid_to_courseurl {
2901: my ($courseid) = @_;
2902: #already url style courseid
2903: return $courseid if ($courseid =~ m{^/});
2904:
2905: if (exists($env{'course.'.$courseid.'.num'})) {
2906: my $cnum = $env{'course.'.$courseid.'.num'};
2907: my $cdom = $env{'course.'.$courseid.'.domain'};
2908: return "/$cdom/$cnum";
2909: }
2910:
2911: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2912: if (exists($courseinfo{'num'})) {
2913: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2914: }
2915:
2916: return undef;
2917: }
2918:
2919: sub getsection {
2920: my ($udom,$unam,$courseid)=@_;
2921: my $cachetime=1800;
2922:
2923: my $hashid="$udom:$unam:$courseid";
2924: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2925: if (defined($cached)) { return $result; }
2926:
2927: my %Pending;
2928: my %Expired;
2929: #
2930: # Each role can either have not started yet (pending), be active,
2931: # or have expired.
2932: #
2933: # If there is an active role, we are done.
2934: #
2935: # If there is more than one role which has not started yet,
2936: # choose the one which will start sooner
2937: # If there is one role which has not started yet, return it.
2938: #
2939: # If there is more than one expired role, choose the one which ended last.
2940: # If there is a role which has expired, return it.
2941: #
2942: $courseid = &courseid_to_courseurl($courseid);
2943: my %roleshash = &dump('roles',$udom,$unam,$courseid);
2944: foreach my $key (keys(%roleshash)) {
2945: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2946: my $section=$1;
2947: if ($key eq $courseid.'_st') { $section=''; }
2948: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2949: my $now=time;
2950: if (defined($end) && $end && ($now > $end)) {
2951: $Expired{$end}=$section;
2952: next;
2953: }
2954: if (defined($start) && $start && ($now < $start)) {
2955: $Pending{$start}=$section;
2956: next;
2957: }
2958: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2959: }
2960: #
2961: # Presumedly there will be few matching roles from the above
2962: # loop and the sorting time will be negligible.
2963: if (scalar(keys(%Pending))) {
2964: my ($time) = sort {$a <=> $b} keys(%Pending);
2965: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2966: }
2967: if (scalar(keys(%Expired))) {
2968: my @sorted = sort {$a <=> $b} keys(%Expired);
2969: my $time = pop(@sorted);
2970: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2971: }
2972: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2973: }
2974:
2975: sub save_cache {
2976: &purge_remembered();
2977: #&Apache::loncommon::validate_page();
2978: undef(%env);
2979: undef($env_loaded);
2980: }
2981:
2982: my $to_remember=-1;
2983: my %remembered;
2984: my %accessed;
2985: my $kicks=0;
2986: my $hits=0;
2987: sub make_key {
2988: my ($name,$id) = @_;
2989: if (length($id) > 65
2990: && length(&escape($id)) > 200) {
2991: $id=length($id).':'.&Digest::MD5::md5_hex($id);
2992: }
2993: return &escape($name.':'.$id);
2994: }
2995:
2996: sub devalidate_cache_new {
2997: my ($name,$id,$debug) = @_;
2998: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
2999: my $remembered_id=$name.':'.$id;
3000: $id=&make_key($name,$id);
3001: $memcache->delete($id);
3002: delete($remembered{$remembered_id});
3003: delete($accessed{$remembered_id});
3004: }
3005:
3006: sub is_cached_new {
3007: my ($name,$id,$debug) = @_;
3008: my $remembered_id=$name.':'.$id; # this is to avoid make_key (which is slow) whenever possible
3009: if (exists($remembered{$remembered_id})) {
3010: if ($debug) { &Apache::lonnet::logthis("Early return $remembered_id of $remembered{$remembered_id} "); }
3011: $accessed{$remembered_id}=[&gettimeofday()];
3012: $hits++;
3013: return ($remembered{$remembered_id},1);
3014: }
3015: $id=&make_key($name,$id);
3016: my $value = $memcache->get($id);
3017: if (!(defined($value))) {
3018: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
3019: return (undef,undef);
3020: }
3021: if ($value eq '__undef__') {
3022: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
3023: $value=undef;
3024: }
3025: &make_room($remembered_id,$value,$debug);
3026: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
3027: return ($value,1);
3028: }
3029:
3030: sub do_cache_new {
3031: my ($name,$id,$value,$time,$debug) = @_;
3032: my $remembered_id=$name.':'.$id;
3033: $id=&make_key($name,$id);
3034: my $setvalue=$value;
3035: if (!defined($setvalue)) {
3036: $setvalue='__undef__';
3037: }
3038: if (!defined($time) ) {
3039: $time=600;
3040: }
3041: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
3042: my $result = $memcache->set($id,$setvalue,$time);
3043: if (! $result) {
3044: &logthis("caching of id -> $id failed");
3045: $memcache->disconnect_all();
3046: }
3047: # need to make a copy of $value
3048: &make_room($remembered_id,$value,$debug);
3049: return $value;
3050: }
3051:
3052: sub make_room {
3053: my ($remembered_id,$value,$debug)=@_;
3054:
3055: $remembered{$remembered_id}= (ref($value)) ? &Storable::dclone($value)
3056: : $value;
3057: if ($to_remember<0) { return; }
3058: $accessed{$remembered_id}=[&gettimeofday()];
3059: if (scalar(keys(%remembered)) <= $to_remember) { return; }
3060: my $to_kick;
3061: my $max_time=0;
3062: foreach my $other (keys(%accessed)) {
3063: if (&tv_interval($accessed{$other}) > $max_time) {
3064: $to_kick=$other;
3065: $max_time=&tv_interval($accessed{$other});
3066: }
3067: }
3068: delete($remembered{$to_kick});
3069: delete($accessed{$to_kick});
3070: $kicks++;
3071: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
3072: return;
3073: }
3074:
3075: sub purge_remembered {
3076: #&logthis("Tossing ".scalar(keys(%remembered)));
3077: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
3078: undef(%remembered);
3079: undef(%accessed);
3080: }
3081: # ------------------------------------- Read an entry from a user's environment
3082:
3083: sub userenvironment {
3084: my ($udom,$unam,@what)=@_;
3085: my $items;
3086: foreach my $item (@what) {
3087: $items.=&escape($item).'&';
3088: }
3089: $items=~s/\&$//;
3090: my %returnhash=();
3091: my $uhome = &homeserver($unam,$udom);
3092: unless ($uhome eq 'no_host') {
3093: my @answer=split(/\&/,
3094: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
3095: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
3096: return %returnhash;
3097: }
3098: my $i;
3099: for ($i=0;$i<=$#what;$i++) {
3100: $returnhash{$what[$i]}=&unescape($answer[$i]);
3101: }
3102: }
3103: return %returnhash;
3104: }
3105:
3106: # ---------------------------------------------------------- Get a studentphoto
3107: sub studentphoto {
3108: my ($udom,$unam,$ext) = @_;
3109: my $home=&Apache::lonnet::homeserver($unam,$udom);
3110: if (defined($env{'request.course.id'})) {
3111: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
3112: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
3113: return(&retrievestudentphoto($udom,$unam,$ext));
3114: } else {
3115: my ($result,$perm_reqd)=
3116: &Apache::lonnet::auto_photo_permission($unam,$udom);
3117: if ($result eq 'ok') {
3118: if (!($perm_reqd eq 'yes')) {
3119: return(&retrievestudentphoto($udom,$unam,$ext));
3120: }
3121: }
3122: }
3123: }
3124: } else {
3125: my ($result,$perm_reqd) =
3126: &Apache::lonnet::auto_photo_permission($unam,$udom);
3127: if ($result eq 'ok') {
3128: if (!($perm_reqd eq 'yes')) {
3129: return(&retrievestudentphoto($udom,$unam,$ext));
3130: }
3131: }
3132: }
3133: return '/adm/lonKaputt/lonlogo_broken.gif';
3134: }
3135:
3136: sub retrievestudentphoto {
3137: my ($udom,$unam,$ext,$type) = @_;
3138: my $home=&Apache::lonnet::homeserver($unam,$udom);
3139: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
3140: if ($ret eq 'ok') {
3141: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
3142: if ($type eq 'thumbnail') {
3143: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
3144: }
3145: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
3146: return $tokenurl;
3147: } else {
3148: if ($type eq 'thumbnail') {
3149: return '/adm/lonKaputt/genericstudent_tn.gif';
3150: } else {
3151: return '/adm/lonKaputt/lonlogo_broken.gif';
3152: }
3153: }
3154: }
3155:
3156: # -------------------------------------------------------------------- New chat
3157:
3158: sub chatsend {
3159: my ($newentry,$anon,$group)=@_;
3160: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
3161: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3162: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
3163: &reply('chatsend:'.$cdom.':'.$cnum.':'.
3164: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
3165: &escape($newentry)).':'.$group,$chome);
3166: }
3167:
3168: # ------------------------------------------ Find current version of a resource
3169:
3170: sub getversion {
3171: my $fname=&clutter(shift);
3172: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
3173: return ¤tversion(&filelocation('',$fname));
3174: }
3175:
3176: sub currentversion {
3177: my $fname=shift;
3178: my $author=$fname;
3179: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3180: my ($udom,$uname)=split(/\//,$author);
3181: my $home=&homeserver($uname,$udom);
3182: if ($home eq 'no_host') {
3183: return -1;
3184: }
3185: my $answer=&reply("currentversion:$fname",$home);
3186: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3187: return -1;
3188: }
3189: return $answer;
3190: }
3191:
3192: #
3193: # Return special version number of resource if set by override, empty otherwise
3194: #
3195: sub usedversion {
3196: my $fname=shift;
3197: unless ($fname) { $fname=$env{'request.uri'}; }
3198: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
3199: if ($urlversion) { return $urlversion; }
3200: return '';
3201: }
3202:
3203: # ----------------------------- Subscribe to a resource, return URL if possible
3204:
3205: sub subscribe {
3206: my $fname=shift;
3207: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
3208: $fname=~s/[\n\r]//g;
3209: my $author=$fname;
3210: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3211: my ($udom,$uname)=split(/\//,$author);
3212: my $home=homeserver($uname,$udom);
3213: if ($home eq 'no_host') {
3214: return 'not_found';
3215: }
3216: my $answer=reply("sub:$fname",$home);
3217: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3218: $answer.=' by '.$home;
3219: }
3220: return $answer;
3221: }
3222:
3223: # -------------------------------------------------------------- Replicate file
3224:
3225: sub repcopy {
3226: my $filename=shift;
3227: $filename=~s/\/+/\//g;
3228: my $londocroot = $perlvar{'lonDocRoot'};
3229: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
3230: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
3231: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
3232: $filename=~m{^/*(uploaded|editupload)/}) {
3233: return &repcopy_userfile($filename);
3234: }
3235: $filename=~s/[\n\r]//g;
3236: my $transname="$filename.in.transfer";
3237: # FIXME: this should flock
3238: if ((-e $filename) || (-e $transname)) { return 'ok'; }
3239: my $remoteurl=subscribe($filename);
3240: if ($remoteurl =~ /^con_lost by/) {
3241: &logthis("Subscribe returned $remoteurl: $filename");
3242: return 'unavailable';
3243: } elsif ($remoteurl eq 'not_found') {
3244: #&logthis("Subscribe returned not_found: $filename");
3245: return 'not_found';
3246: } elsif ($remoteurl =~ /^rejected by/) {
3247: &logthis("Subscribe returned $remoteurl: $filename");
3248: return 'forbidden';
3249: } elsif ($remoteurl eq 'directory') {
3250: return 'ok';
3251: } else {
3252: my $author=$filename;
3253: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3254: my ($udom,$uname)=split(/\//,$author);
3255: my $home=homeserver($uname,$udom);
3256: unless ($home eq $perlvar{'lonHostID'}) {
3257: my @parts=split(/\//,$filename);
3258: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
3259: if ($path ne "$londocroot/res") {
3260: &logthis("Malconfiguration for replication: $filename");
3261: return 'bad_request';
3262: }
3263: my $count;
3264: for ($count=5;$count<$#parts;$count++) {
3265: $path.="/$parts[$count]";
3266: if ((-e $path)!=1) {
3267: mkdir($path,0777);
3268: }
3269: }
3270: my $request=new HTTP::Request('GET',"$remoteurl");
3271: my $response;
3272: if ($remoteurl =~ m{/raw/}) {
3273: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',0,1);
3274: } else {
3275: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',1);
3276: }
3277: if ($response->is_error()) {
3278: unlink($transname);
3279: my $message=$response->status_line;
3280: &logthis("<font color=\"blue\">WARNING:"
3281: ." LWP get: $message: $filename</font>");
3282: return 'unavailable';
3283: } else {
3284: if ($remoteurl!~/\.meta$/) {
3285: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
3286: my $mresponse;
3287: if ($remoteurl =~ m{/raw/}) {
3288: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',0,1);
3289: } else {
3290: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',1);
3291: }
3292: if ($mresponse->is_error()) {
3293: unlink($filename.'.meta');
3294: &logthis(
3295: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
3296: }
3297: }
3298: rename($transname,$filename);
3299: return 'ok';
3300: }
3301: }
3302: }
3303: }
3304:
3305: # ------------------------------------------------ Get server side include body
3306: sub ssi_body {
3307: my ($filelink,%form)=@_;
3308: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
3309: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
3310: }
3311: my $output='';
3312: my $response;
3313: if ($filelink=~/^https?\:/) {
3314: ($output,$response)=&externalssi($filelink);
3315: } else {
3316: $filelink .= $filelink=~/\?/ ? '&' : '?';
3317: $filelink .= 'inhibitmenu=yes';
3318: ($output,$response)=&ssi($filelink,%form);
3319: }
3320: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
3321: $output=~s/^.*?\<body[^\>]*\>//si;
3322: $output=~s/\<\/body\s*\>.*?$//si;
3323: if (wantarray) {
3324: return ($output, $response);
3325: } else {
3326: return $output;
3327: }
3328: }
3329:
3330: # --------------------------------------------------------- Server Side Include
3331:
3332: sub absolute_url {
3333: my ($host_name) = @_;
3334: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
3335: if ($host_name eq '') {
3336: $host_name = $ENV{'SERVER_NAME'};
3337: }
3338: return $protocol.$host_name;
3339: }
3340:
3341: #
3342: # Server side include.
3343: # Parameters:
3344: # fn Possibly encrypted resource name/id.
3345: # form Hash that describes how the rendering should be done
3346: # and other things.
3347: # Returns:
3348: # Scalar context: The content of the response.
3349: # Array context: 2 element list of the content and the full response object.
3350: #
3351: sub ssi {
3352:
3353: my ($fn,%form)=@_;
3354: my $request;
3355:
3356: $form{'no_update_last_known'}=1;
3357: &Apache::lonenc::check_encrypt(\$fn);
3358: if (%form) {
3359: $request=new HTTP::Request('POST',&absolute_url().$fn);
3360: $request->content(join('&',map {
3361: my $name = escape($_);
3362: "$name=" . ( ref($form{$_}) eq 'ARRAY'
3363: ? join("&$name=", map {escape($_) } @{$form{$_}})
3364: : &escape($form{$_}) );
3365: } keys(%form)));
3366: } else {
3367: $request=new HTTP::Request('GET',&absolute_url().$fn);
3368: }
3369:
3370: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
3371: my $lonhost = $perlvar{'lonHostID'};
3372: my $islocal;
3373: if (($env{'request.course.id'}) &&
3374: ($form{'grade_courseid'} eq $env{'request.course.id'}) &&
3375: ($form{'grade_username'} ne '') && ($form{'grade_domain'} ne '') &&
3376: ($form{'grade_symb'} ne '') &&
3377: (&Apache::lonnet::allowed('mgr',$env{'request.course.id'}.
3378: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:'')))) {
3379: $islocal = 1;
3380: }
3381: my $response= &LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,
3382: '','','',$islocal);
3383:
3384: if (wantarray) {
3385: return ($response->content, $response);
3386: } else {
3387: return $response->content;
3388: }
3389: }
3390:
3391: sub externalssi {
3392: my ($url)=@_;
3393: my $request=new HTTP::Request('GET',$url);
3394: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar);
3395: if (wantarray) {
3396: return ($response->content, $response);
3397: } else {
3398: return $response->content;
3399: }
3400: }
3401:
3402:
3403: # If the local copy of a replicated resource is outdated, trigger a
3404: # connection from the homeserver to flush the delayed queue. If no update
3405: # happens, remove local copies of outdated resource (and corresponding
3406: # metadata file).
3407:
3408: sub remove_stale_resfile {
3409: my ($url) = @_;
3410: my $removed;
3411: if ($url=~m{^/res/($match_domain)/($match_username)/}) {
3412: my $audom = $1;
3413: my $auname = $2;
3414: unless (($url =~ /\.\d+\.\w+$/) || ($url =~ m{^/res/lib/templates/})) {
3415: my $homeserver = &homeserver($auname,$audom);
3416: unless (($homeserver eq 'no_host') ||
3417: (grep { $_ eq $homeserver } ¤t_machine_ids())) {
3418: my $fname = &filelocation('',$url);
3419: if (-e $fname) {
3420: my $hostname = &hostname($homeserver);
3421: if ($hostname) {
3422: my $protocol = $protocol{$homeserver};
3423: $protocol = 'http' if ($protocol ne 'https');
3424: my $uri = &declutter($url);
3425: my $request=new HTTP::Request('HEAD',$protocol.'://'.$hostname.'/raw/'.$uri);
3426: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,5,0,1);
3427: if ($response->is_success()) {
3428: my $remmodtime = &HTTP::Date::str2time( $response->header('Last-modified') );
3429: my $locmodtime = (stat($fname))[9];
3430: if ($locmodtime < $remmodtime) {
3431: my $stale;
3432: my $answer = &reply('pong',$homeserver);
3433: if ($answer eq $homeserver.':'.$perlvar{'lonHostID'}) {
3434: sleep(0.2);
3435: $locmodtime = (stat($fname))[9];
3436: if ($locmodtime < $remmodtime) {
3437: my $posstransfer = $fname.'.in.transfer';
3438: if ((-e $posstransfer) && ($remmodtime < (stat($posstransfer))[9])) {
3439: $removed = 1;
3440: } else {
3441: $stale = 1;
3442: }
3443: } else {
3444: $removed = 1;
3445: }
3446: } else {
3447: $stale = 1;
3448: }
3449: if ($stale) {
3450: unlink($fname);
3451: if ($uri!~/\.meta$/) {
3452: unlink($fname.'.meta');
3453: }
3454: &reply("unsub:$fname",$homeserver);
3455: $removed = 1;
3456: }
3457: }
3458: }
3459: }
3460: }
3461: }
3462: }
3463: }
3464: return $removed;
3465: }
3466:
3467: # -------------------------------- Allow a /uploaded/ URI to be vouched for
3468:
3469: sub allowuploaded {
3470: my ($srcurl,$url)=@_;
3471: $url=&clutter(&declutter($url));
3472: my $dir=$url;
3473: $dir=~s/\/[^\/]+$//;
3474: my %httpref=();
3475: my $httpurl=&hreflocation('',$url);
3476: $httpref{'httpref.'.$httpurl}=$srcurl;
3477: &Apache::lonnet::appenv(\%httpref);
3478: }
3479:
3480: #
3481: # Determine if the current user should be able to edit a particular resource,
3482: # when viewing in course context.
3483: # (a) When viewing resource used to determine if "Edit" item is included in
3484: # Functions.
3485: # (b) When displaying folder contents in course editor, used to determine if
3486: # "Edit" link will be displayed alongside resource.
3487: #
3488: # input: six args -- filename (decluttered), course number, course domain,
3489: # url, symb (if registered) and group (if this is a group
3490: # item -- e.g., bulletin board, group page etc.).
3491: # output: array of five scalars --
3492: # $cfile -- url for file editing if editable on current server
3493: # $home -- homeserver of resource (i.e., for author if published,
3494: # or course if uploaded.).
3495: # $switchserver -- 1 if server switch will be needed.
3496: # $forceedit -- 1 if icon/link should be to go to edit mode
3497: # $forceview -- 1 if icon/link should be to go to view mode
3498: #
3499:
3500: sub can_edit_resource {
3501: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
3502: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
3503: #
3504: # For aboutme pages user can only edit his/her own.
3505: #
3506: if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
3507: my ($sdom,$sname) = ($1,$2);
3508: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
3509: $home = $env{'user.home'};
3510: $cfile = $resurl;
3511: if ($env{'form.forceedit'}) {
3512: $forceview = 1;
3513: } else {
3514: $forceedit = 1;
3515: }
3516: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3517: } else {
3518: return;
3519: }
3520: }
3521:
3522: if ($env{'request.course.id'}) {
3523: my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
3524: if ($group ne '') {
3525: # if this is a group homepage or group bulletin board, check group privs
3526: my $allowed = 0;
3527: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
3528: if ((&allowed('mdg',$env{'request.course.id'}.
3529: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3530: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3531: $allowed = 1;
3532: }
3533: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
3534: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3535: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3536: $allowed = 1;
3537: }
3538: }
3539: if ($allowed) {
3540: $home=&homeserver($cnum,$cdom);
3541: if ($env{'form.forceedit'}) {
3542: $forceview = 1;
3543: } else {
3544: $forceedit = 1;
3545: }
3546: $cfile = $resurl;
3547: } else {
3548: return;
3549: }
3550: } else {
3551: if ($resurl =~ m{^/?adm/viewclasslist$}) {
3552: unless (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
3553: return;
3554: }
3555: } elsif (!$crsedit) {
3556: #
3557: # No edit allowed where CC has switched to student role.
3558: #
3559: return;
3560: }
3561: }
3562: }
3563:
3564: if ($file ne '') {
3565: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
3566: if (&is_course_upload($file,$cnum,$cdom)) {
3567: $uploaded = 1;
3568: $incourse = 1;
3569: if ($file =~/\.(htm|html|css|js|txt)$/) {
3570: $cfile = &hreflocation('',$file);
3571: if ($env{'form.forceedit'}) {
3572: $forceview = 1;
3573: } else {
3574: $forceedit = 1;
3575: }
3576: }
3577: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
3578: $incourse = 1;
3579: if ($env{'form.forceedit'}) {
3580: $forceview = 1;
3581: } else {
3582: $forceedit = 1;
3583: }
3584: $cfile = $resurl;
3585: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
3586: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
3587: $incourse = 1;
3588: if ($env{'form.forceedit'}) {
3589: $forceview = 1;
3590: } else {
3591: $forceedit = 1;
3592: }
3593: $cfile = $resurl;
3594: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem') {
3595: $incourse = 1;
3596: $cfile = $resurl.'/smpedit';
3597: } elsif ($resurl =~ m{^/adm/wrapper/ext/}) {
3598: $incourse = 1;
3599: if ($env{'form.forceedit'}) {
3600: $forceview = 1;
3601: } else {
3602: $forceedit = 1;
3603: }
3604: $cfile = $resurl;
3605: } elsif ($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3606: $incourse = 1;
3607: if ($env{'form.forceedit'}) {
3608: $forceview = 1;
3609: } else {
3610: $forceedit = 1;
3611: }
3612: $cfile = $resurl;
3613: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3614: $incourse = 1;
3615: if ($env{'form.forceedit'}) {
3616: $forceview = 1;
3617: } else {
3618: $forceedit = 1;
3619: }
3620: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3621: }
3622: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
3623: my $template = '/res/lib/templates/simpleproblem.problem';
3624: if (&is_on_map($template)) {
3625: $incourse = 1;
3626: $forceview = 1;
3627: $cfile = $template;
3628: }
3629: } elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3630: $incourse = 1;
3631: if ($env{'form.forceedit'}) {
3632: $forceview = 1;
3633: } else {
3634: $forceedit = 1;
3635: }
3636: $cfile = $resurl;
3637: } elsif (($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3638: $incourse = 1;
3639: if ($env{'form.forceedit'}) {
3640: $forceview = 1;
3641: } else {
3642: $forceedit = 1;
3643: }
3644: $cfile = $resurl;
3645: } elsif (($resurl eq '/adm/extresedit') && ($symb || $env{'form.folderpath'})) {
3646: $incourse = 1;
3647: $forceview = 1;
3648: if ($symb) {
3649: my ($map,$id,$res)=&decode_symb($symb);
3650: $env{'request.symb'} = $symb;
3651: $cfile = &clutter($res);
3652: } else {
3653: $cfile = $env{'form.suppurl'};
3654: my $escfile = &unescape($cfile);
3655: if ($escfile =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3656: $cfile = '/adm/wrapper'.$escfile;
3657: } else {
3658: $escfile =~ s{^http://}{};
3659: $cfile = &escape("/adm/wrapper/ext/$escfile");
3660: }
3661: }
3662: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3663: if ($env{'form.forceedit'}) {
3664: $forceview = 1;
3665: } else {
3666: $forceedit = 1;
3667: }
3668: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3669: }
3670: }
3671: if ($uploaded || $incourse) {
3672: $home=&homeserver($cnum,$cdom);
3673: } elsif ($file !~ m{/$}) {
3674: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
3675: $file=~s{^($match_domain/$match_username)}{/priv/$1};
3676: # Check that the user has permission to edit this resource
3677: my $setpriv = 1;
3678: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
3679: if (defined($cfudom)) {
3680: $home=&homeserver($cfuname,$cfudom);
3681: $cfile=$file;
3682: }
3683: }
3684: if (($cfile ne '') && (!$incourse || $uploaded) &&
3685: (($home ne '') && ($home ne 'no_host'))) {
3686: my @ids=¤t_machine_ids();
3687: unless (grep(/^\Q$home\E$/,@ids)) {
3688: $switchserver=1;
3689: }
3690: }
3691: }
3692: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3693: }
3694:
3695: sub is_course_upload {
3696: my ($file,$cnum,$cdom) = @_;
3697: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
3698: $uploadpath =~ s{^\/}{};
3699: if (($file =~ m{^\Q$uploadpath\E/userfiles/(docs|supplemental)/}) ||
3700: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/})) {
3701: return 1;
3702: }
3703: return;
3704: }
3705:
3706: sub in_course {
3707: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
3708: if ($hideprivileged) {
3709: my $skipuser;
3710: my %coursehash = &coursedescription($cdom.'_'.$cnum);
3711: my @possdoms = ($cdom);
3712: if ($coursehash{'checkforpriv'}) {
3713: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
3714: }
3715: if (&privileged($uname,$udom,\@possdoms)) {
3716: $skipuser = 1;
3717: if ($coursehash{'nothideprivileged'}) {
3718: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3719: my $user;
3720: if ($item =~ /:/) {
3721: $user = $item;
3722: } else {
3723: $user = join(':',split(/[\@]/,$item));
3724: }
3725: if ($user eq $uname.':'.$udom) {
3726: undef($skipuser);
3727: last;
3728: }
3729: }
3730: }
3731: if ($skipuser) {
3732: return 0;
3733: }
3734: }
3735: }
3736: $type ||= 'any';
3737: if (!defined($cdom) || !defined($cnum)) {
3738: my $cid = $env{'request.course.id'};
3739: $cdom = $env{'course.'.$cid.'.domain'};
3740: $cnum = $env{'course.'.$cid.'.num'};
3741: }
3742: my $typesref;
3743: if (($type eq 'any') || ($type eq 'all')) {
3744: $typesref = ['active','previous','future'];
3745: } elsif ($type eq 'previous' || $type eq 'future') {
3746: $typesref = [$type];
3747: }
3748: my %roles = &get_my_roles($uname,$udom,'userroles',
3749: $typesref,undef,[$cdom]);
3750: my ($tmp) = keys(%roles);
3751: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
3752: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
3753: if (@course_roles > 0) {
3754: return 1;
3755: }
3756: return 0;
3757: }
3758:
3759: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
3760: # input: action, courseID, current domain, intended
3761: # path to file, source of file, instruction to parse file for objects,
3762: # ref to hash for embedded objects,
3763: # ref to hash for codebase of java objects.
3764: # reference to scalar to accommodate mime type determined
3765: # from File::MMagic if $parser = parse.
3766: #
3767: # output: url to file (if action was uploaddoc),
3768: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
3769: #
3770: # Allows directory structure to be used within lonUsers/../userfiles/ for a
3771: # course.
3772: #
3773: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3774: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
3775: # course's home server.
3776: #
3777: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
3778: # be copied from $source (current location) to
3779: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3780: # and will then be copied to
3781: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
3782: # course's home server.
3783: #
3784: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3785: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
3786: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3787: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
3788: # in course's home server.
3789: #
3790:
3791: sub process_coursefile {
3792: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
3793: $mimetype)=@_;
3794: my $fetchresult;
3795: my $home=&homeserver($docuname,$docudom);
3796: if ($action eq 'propagate') {
3797: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3798: $home);
3799: } else {
3800: my $fpath = '';
3801: my $fname = $file;
3802: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3803: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3804: my $filepath = &build_filepath($fpath);
3805: if ($action eq 'copy') {
3806: if ($source eq '') {
3807: $fetchresult = 'no source file';
3808: return $fetchresult;
3809: } else {
3810: my $destination = $filepath.'/'.$fname;
3811: rename($source,$destination);
3812: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3813: $home);
3814: }
3815: } elsif ($action eq 'uploaddoc') {
3816: open(my $fh,'>',$filepath.'/'.$fname);
3817: print $fh $env{'form.'.$source};
3818: close($fh);
3819: if ($parser eq 'parse') {
3820: my $mm = new File::MMagic;
3821: my $type = $mm->checktype_filename($filepath.'/'.$fname);
3822: if ($type eq 'text/html') {
3823: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
3824: unless ($parse_result eq 'ok') {
3825: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
3826: }
3827: }
3828: if (ref($mimetype)) {
3829: $$mimetype = $type;
3830: }
3831: }
3832: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3833: $home);
3834: if ($fetchresult eq 'ok') {
3835: return '/uploaded/'.$fpath.'/'.$fname;
3836: } else {
3837: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3838: ' to host '.$home.': '.$fetchresult);
3839: return '/adm/notfound.html';
3840: }
3841: }
3842: }
3843: unless ( $fetchresult eq 'ok') {
3844: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3845: ' to host '.$home.': '.$fetchresult);
3846: }
3847: return $fetchresult;
3848: }
3849:
3850: sub build_filepath {
3851: my ($fpath) = @_;
3852: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
3853: unless ($fpath eq '') {
3854: my @parts=split('/',$fpath);
3855: foreach my $part (@parts) {
3856: $filepath.= '/'.$part;
3857: if ((-e $filepath)!=1) {
3858: mkdir($filepath,0777);
3859: }
3860: }
3861: }
3862: return $filepath;
3863: }
3864:
3865: sub store_edited_file {
3866: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
3867: my $file = $primary_url;
3868: $file =~ s#^/uploaded/$docudom/$docuname/##;
3869: my $fpath = '';
3870: my $fname = $file;
3871: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3872: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3873: my $filepath = &build_filepath($fpath);
3874: open(my $fh,'>',$filepath.'/'.$fname);
3875: print $fh $content;
3876: close($fh);
3877: my $home=&homeserver($docuname,$docudom);
3878: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3879: $home);
3880: if ($$fetchresult eq 'ok') {
3881: return '/uploaded/'.$fpath.'/'.$fname;
3882: } else {
3883: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3884: ' to host '.$home.': '.$$fetchresult);
3885: return '/adm/notfound.html';
3886: }
3887: }
3888:
3889: sub clean_filename {
3890: my ($fname,$args)=@_;
3891: # Replace Windows backslashes by forward slashes
3892: $fname=~s/\\/\//g;
3893: if (!$args->{'keep_path'}) {
3894: # Get rid of everything but the actual filename
3895: $fname=~s/^.*\/([^\/]+)$/$1/;
3896: }
3897: # Replace spaces by underscores
3898: $fname=~s/\s+/\_/g;
3899: # Transliterate non-ascii text to ascii
3900: my $lang = &Apache::lonlocal::current_language();
3901: $fname = &LONCAPA::transliterate::fname_to_ascii($fname,$lang);
3902: # Replace all other weird characters by nothing
3903: $fname=~s{[^/\w\.\-]}{}g;
3904: # Replace all .\d. sequences with _\d. so they no longer look like version
3905: # numbers
3906: $fname=~s/\.(\d+)(?=\.)/_$1/g;
3907: return $fname;
3908: }
3909:
3910: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
3911: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
3912: # image with the same aspect ratio as the original, but with dimensions which do
3913: # not exceed $resizewidth and $resizeheight.
3914:
3915: sub resizeImage {
3916: my ($img_path,$resizewidth,$resizeheight) = @_;
3917: my $ima = Image::Magick->new;
3918: my $resized;
3919: if (-e $img_path) {
3920: $ima->Read($img_path);
3921: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
3922: my $width = $ima->Get('width');
3923: my $height = $ima->Get('height');
3924: if ($width > $resizewidth) {
3925: my $factor = $width/$resizewidth;
3926: my $newheight = $height/$factor;
3927: $ima->Scale(width=>$resizewidth,height=>$newheight);
3928: $resized = 1;
3929: }
3930: }
3931: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
3932: my $width = $ima->Get('width');
3933: my $height = $ima->Get('height');
3934: if ($height > $resizeheight) {
3935: my $factor = $height/$resizeheight;
3936: my $newwidth = $width/$factor;
3937: $ima->Scale(width=>$newwidth,height=>$resizeheight);
3938: $resized = 1;
3939: }
3940: }
3941: if ($resized) {
3942: $ima->Write($img_path);
3943: }
3944: }
3945: return;
3946: }
3947:
3948: # --------------- Take an uploaded file and put it into the userfiles directory
3949: # input: $formname - the contents of the file are in $env{"form.$formname"}
3950: # the desired filename is in $env{"form.$formname.filename"}
3951: # $context - possible values: coursedoc, existingfile, overwrite,
3952: # canceloverwrite, scantron or ''.
3953: # if 'coursedoc': upload to the current course
3954: # if 'existingfile': write file to tmp/overwrites directory
3955: # if 'canceloverwrite': delete file written to tmp/overwrites directory
3956: # $context is passed as argument to &finishuserfileupload
3957: # $subdir - directory in userfile to store the file into
3958: # $parser - instruction to parse file for objects ($parser = parse) or
3959: # if context is 'scantron', $parser is hashref of csv column mapping
3960: # (e.g.,{ PaperID => 0, LastName => 1, FirstName => 2, ID => 3,
3961: # Section => 4, CODE => 5, FirstQuestion => 9 }).
3962: # $allfiles - reference to hash for embedded objects
3963: # $codebase - reference to hash for codebase of java objects
3964: # $desuname - username for permanent storage of uploaded file
3965: # $dsetudom - domain for permanaent storage of uploaded file
3966: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
3967: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
3968: # $resizewidth - width (pixels) to which to resize uploaded image
3969: # $resizeheight - height (pixels) to which to resize uploaded image
3970: # $mimetype - reference to scalar to accommodate mime type determined
3971: # from File::MMagic.
3972: #
3973: # output: url of file in userspace, or error: <message>
3974: # or /adm/notfound.html if failure to upload occurse
3975:
3976: sub userfileupload {
3977: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
3978: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
3979: if (!defined($subdir)) { $subdir='unknown'; }
3980: my $fname=$env{'form.'.$formname.'.filename'};
3981: $fname=&clean_filename($fname);
3982: # See if there is anything left
3983: unless ($fname) { return 'error: no uploaded file'; }
3984: # If filename now begins with a . prepend unix timestamp _ milliseconds
3985: if ($fname =~ /^\./) {
3986: my ($s,$usec) = &gettimeofday();
3987: while (length($usec) < 6) {
3988: $usec = '0'.$usec;
3989: }
3990: $fname = $s.'_'.substr($usec,0,3).$fname;
3991: }
3992: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
3993: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
3994: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
3995: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3996: my $now = time;
3997: my $filepath;
3998: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
3999: $filepath = 'tmp/helprequests/'.$now;
4000: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
4001: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
4002: '_'.$env{'user.domain'}.'/pending';
4003: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
4004: my ($docuname,$docudom);
4005: if ($destudom =~ /^$match_domain$/) {
4006: $docudom = $destudom;
4007: } else {
4008: $docudom = $env{'user.domain'};
4009: }
4010: if ($destuname =~ /^$match_username$/) {
4011: $docuname = $destuname;
4012: } else {
4013: $docuname = $env{'user.name'};
4014: }
4015: if (exists($env{'form.group'})) {
4016: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4017: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4018: }
4019: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
4020: if ($context eq 'canceloverwrite') {
4021: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
4022: if (-e $tempfile) {
4023: my @info = stat($tempfile);
4024: if ($info[9] eq $env{'form.timestamp'}) {
4025: unlink($tempfile);
4026: }
4027: }
4028: return;
4029: }
4030: }
4031: # Create the directory if not present
4032: my @parts=split(/\//,$filepath);
4033: my $fullpath = $perlvar{'lonDaemons'};
4034: for (my $i=0;$i<@parts;$i++) {
4035: $fullpath .= '/'.$parts[$i];
4036: if ((-e $fullpath)!=1) {
4037: mkdir($fullpath,0777);
4038: }
4039: }
4040: open(my $fh,'>',$fullpath.'/'.$fname);
4041: print $fh $env{'form.'.$formname};
4042: close($fh);
4043: if ($context eq 'existingfile') {
4044: my @info = stat($fullpath.'/'.$fname);
4045: return ($fullpath.'/'.$fname,$info[9]);
4046: } else {
4047: return $fullpath.'/'.$fname;
4048: }
4049: }
4050: if ($subdir eq 'scantron') {
4051: $fname = 'scantron_orig_'.$fname;
4052: } else {
4053: $fname="$subdir/$fname";
4054: }
4055: if ($context eq 'coursedoc') {
4056: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4057: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4058: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
4059: return &finishuserfileupload($docuname,$docudom,
4060: $formname,$fname,$parser,$allfiles,
4061: $codebase,$thumbwidth,$thumbheight,
4062: $resizewidth,$resizeheight,$context,$mimetype);
4063: } else {
4064: if ($env{'form.folder'}) {
4065: $fname=$env{'form.folder'}.'/'.$fname;
4066: }
4067: return &process_coursefile('uploaddoc',$docuname,$docudom,
4068: $fname,$formname,$parser,
4069: $allfiles,$codebase,$mimetype);
4070: }
4071: } elsif (defined($destuname)) {
4072: my $docuname=$destuname;
4073: my $docudom=$destudom;
4074: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
4075: $parser,$allfiles,$codebase,
4076: $thumbwidth,$thumbheight,
4077: $resizewidth,$resizeheight,$context,$mimetype);
4078: } else {
4079: my $docuname=$env{'user.name'};
4080: my $docudom=$env{'user.domain'};
4081: if ((exists($env{'form.group'})) || ($context eq 'syllabus')) {
4082: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4083: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4084: }
4085: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
4086: $parser,$allfiles,$codebase,
4087: $thumbwidth,$thumbheight,
4088: $resizewidth,$resizeheight,$context,$mimetype);
4089: }
4090: }
4091:
4092: sub finishuserfileupload {
4093: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
4094: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
4095: my $path=$docudom.'/'.$docuname.'/';
4096: my $filepath=$perlvar{'lonDocRoot'};
4097:
4098: my ($fnamepath,$file,$fetchthumb);
4099: $file=$fname;
4100: if ($fname=~m|/|) {
4101: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
4102: $path.=$fnamepath.'/';
4103: }
4104: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
4105: my $count;
4106: for ($count=4;$count<=$#parts;$count++) {
4107: $filepath.="/$parts[$count]";
4108: if ((-e $filepath)!=1) {
4109: mkdir($filepath,0777);
4110: }
4111: }
4112:
4113: # Save the file
4114: {
4115: if (!open(FH,'>',$filepath.'/'.$file)) {
4116: &logthis('Failed to create '.$filepath.'/'.$file);
4117: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
4118: return '/adm/notfound.html';
4119: }
4120: if ($context eq 'overwrite') {
4121: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
4122: my $target = $filepath.'/'.$file;
4123: if (-e $source) {
4124: my @info = stat($source);
4125: if ($info[9] eq $env{'form.timestamp'}) {
4126: unless (&File::Copy::move($source,$target)) {
4127: &logthis('Failed to overwrite '.$filepath.'/'.$file);
4128: return "Moving from $source failed";
4129: }
4130: } else {
4131: return "Temporary file: $source had unexpected date/time for last modification";
4132: }
4133: } else {
4134: return "Temporary file: $source missing";
4135: }
4136: } elsif (!print FH ($env{'form.'.$formname})) {
4137: &logthis('Failed to write to '.$filepath.'/'.$file);
4138: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
4139: return '/adm/notfound.html';
4140: }
4141: close(FH);
4142: if ($resizewidth && $resizeheight) {
4143: my $mm = new File::MMagic;
4144: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
4145: if ($mime_type =~ m{^image/}) {
4146: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
4147: }
4148: }
4149: }
4150: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
4151: if (ref($mimetype)) {
4152: if ($$mimetype eq '') {
4153: my $mm = new File::MMagic;
4154: my $type = $mm->checktype_filename($filepath.'/'.$file);
4155: $$mimetype = $type;
4156: }
4157: }
4158: }
4159: if (($context ne 'scantron') && ($parser eq 'parse')) {
4160: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
4161: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
4162: $allfiles,$codebase);
4163: unless ($parse_result eq 'ok') {
4164: &logthis('Failed to parse '.$filepath.$file.
4165: ' for embedded media: '.$parse_result);
4166: }
4167: }
4168: } elsif (($context eq 'scantron') && (ref($parser) eq 'HASH')) {
4169: my $format = $env{'form.scantron_format'};
4170: &bubblesheet_converter($docudom,$filepath.'/'.$file,$parser,$format);
4171: }
4172: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
4173: my $input = $filepath.'/'.$file;
4174: my $output = $filepath.'/'.'tn-'.$file;
4175: my $thumbsize = $thumbwidth.'x'.$thumbheight;
4176: my @args = ('convert','-sample',$thumbsize,$input,$output);
4177: system({$args[0]} @args);
4178: if (-e $filepath.'/'.'tn-'.$file) {
4179: $fetchthumb = 1;
4180: }
4181: }
4182:
4183: # Notify homeserver to grep it
4184: #
4185: my $docuhome=&homeserver($docuname,$docudom);
4186: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
4187: if ($fetchresult eq 'ok') {
4188: if ($fetchthumb) {
4189: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
4190: if ($thumbresult ne 'ok') {
4191: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
4192: $docuhome.': '.$thumbresult);
4193: }
4194: }
4195: #
4196: # Return the URL to it
4197: return '/uploaded/'.$path.$file;
4198: } else {
4199: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
4200: ': '.$fetchresult);
4201: return '/adm/notfound.html';
4202: }
4203: }
4204:
4205: sub extract_embedded_items {
4206: my ($fullpath,$allfiles,$codebase,$content) = @_;
4207: my @state = ();
4208: my (%lastids,%related,%shockwave,%flashvars);
4209: my %javafiles = (
4210: codebase => '',
4211: code => '',
4212: archive => ''
4213: );
4214: my %mediafiles = (
4215: src => '',
4216: movie => '',
4217: );
4218: my $p;
4219: if ($content) {
4220: $p = HTML::LCParser->new($content);
4221: } else {
4222: $p = HTML::LCParser->new($fullpath);
4223: }
4224: while (my $t=$p->get_token()) {
4225: if ($t->[0] eq 'S') {
4226: my ($tagname, $attr) = ($t->[1],$t->[2]);
4227: push(@state, $tagname);
4228: if (lc($tagname) eq 'allow') {
4229: &add_filetype($allfiles,$attr->{'src'},'src');
4230: }
4231: if (lc($tagname) eq 'img') {
4232: &add_filetype($allfiles,$attr->{'src'},'src');
4233: }
4234: if (lc($tagname) eq 'a') {
4235: unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) {
4236: &add_filetype($allfiles,$attr->{'href'},'href');
4237: }
4238: }
4239: if (lc($tagname) eq 'script') {
4240: my $src;
4241: if ($attr->{'archive'} =~ /\.jar$/i) {
4242: &add_filetype($allfiles,$attr->{'archive'},'archive');
4243: } else {
4244: if ($attr->{'src'} ne '') {
4245: $src = $attr->{'src'};
4246: &add_filetype($allfiles,$src,'src');
4247: }
4248: }
4249: my $text = $p->get_trimmed_text();
4250: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
4251: my @swfargs = split(/,/,$1);
4252: foreach my $item (@swfargs) {
4253: $item =~ s/["']//g;
4254: $item =~ s/^\s+//;
4255: $item =~ s/\s+$//;
4256: }
4257: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
4258: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
4259: push(@{$related{$swfargs[0]}},$swfargs[2]);
4260: } else {
4261: $related{$swfargs[0]} = [$swfargs[2]];
4262: }
4263: }
4264: }
4265: }
4266: if (lc($tagname) eq 'link') {
4267: if (lc($attr->{'rel'}) eq 'stylesheet') {
4268: &add_filetype($allfiles,$attr->{'href'},'href');
4269: }
4270: }
4271: if (lc($tagname) eq 'object' ||
4272: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
4273: foreach my $item (keys(%javafiles)) {
4274: $javafiles{$item} = '';
4275: }
4276: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
4277: $lastids{lc($tagname)} = $attr->{'id'};
4278: }
4279: }
4280: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
4281: my $name = lc($attr->{'name'});
4282: foreach my $item (keys(%javafiles)) {
4283: if ($name eq $item) {
4284: $javafiles{$item} = $attr->{'value'};
4285: last;
4286: }
4287: }
4288: my $pathfrom;
4289: foreach my $item (keys(%mediafiles)) {
4290: if ($name eq $item) {
4291: $pathfrom = $attr->{'value'};
4292: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
4293: &add_filetype($allfiles,$pathfrom,$name);
4294: last;
4295: }
4296: }
4297: if ($name eq 'flashvars') {
4298: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
4299: }
4300: if ($pathfrom ne '') {
4301: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
4302: $pathfrom);
4303: }
4304: }
4305: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
4306: foreach my $item (keys(%javafiles)) {
4307: if ($attr->{$item}) {
4308: $javafiles{$item} = $attr->{$item};
4309: last;
4310: }
4311: }
4312: foreach my $item (keys(%mediafiles)) {
4313: if ($attr->{$item}) {
4314: &add_filetype($allfiles,$attr->{$item},$item);
4315: last;
4316: }
4317: }
4318: if (lc($tagname) eq 'embed') {
4319: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
4320: &embedded_dependency($allfiles,\%related,$attr->{'name'},
4321: $attr->{'src'});
4322: }
4323: }
4324: }
4325: if (lc($tagname) eq 'iframe') {
4326: my $src = $attr->{'src'} ;
4327: if (($src ne '') && ($src !~ m{^(/|https?://)})) {
4328: &add_filetype($allfiles,$src,'src');
4329: } elsif ($src =~ m{^/}) {
4330: if ($env{'request.course.id'}) {
4331: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4332: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4333: my $url = &hreflocation('',$fullpath);
4334: if ($url =~ m{^/uploaded/$cdom/$cnum/docs/(\w+/\d+)/}) {
4335: my $relpath = $1;
4336: if ($src =~ m{^/uploaded/$cdom/$cnum/docs/\Q$relpath\E/(.+)$}) {
4337: &add_filetype($allfiles,$1,'src');
4338: }
4339: }
4340: }
4341: }
4342: }
4343: if ($t->[4] =~ m{/>$}) {
4344: pop(@state);
4345: }
4346: } elsif ($t->[0] eq 'E') {
4347: my ($tagname) = ($t->[1]);
4348: if ($javafiles{'codebase'} ne '') {
4349: $javafiles{'codebase'} .= '/';
4350: }
4351: if (lc($tagname) eq 'applet' ||
4352: lc($tagname) eq 'object' ||
4353: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
4354: ) {
4355: foreach my $item (keys(%javafiles)) {
4356: if ($item ne 'codebase' && $javafiles{$item} ne '') {
4357: my $file=$javafiles{'codebase'}.$javafiles{$item};
4358: &add_filetype($allfiles,$file,$item);
4359: }
4360: }
4361: }
4362: pop @state;
4363: }
4364: }
4365: foreach my $id (sort(keys(%flashvars))) {
4366: if ($shockwave{$id} ne '') {
4367: my @pairs = split(/\&/,$flashvars{$id});
4368: foreach my $pair (@pairs) {
4369: my ($key,$value) = split(/\=/,$pair);
4370: if ($key eq 'thumb') {
4371: &add_filetype($allfiles,$value,$key);
4372: } elsif ($key eq 'content') {
4373: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
4374: my ($ext) = ($value =~ /\.([^.]+)$/);
4375: if ($ext ne '') {
4376: &add_filetype($allfiles,$path.$value,$ext);
4377: }
4378: }
4379: }
4380: }
4381: }
4382: return 'ok';
4383: }
4384:
4385: sub add_filetype {
4386: my ($allfiles,$file,$type)=@_;
4387: if (exists($allfiles->{$file})) {
4388: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
4389: push(@{$allfiles->{$file}}, &escape($type));
4390: }
4391: } else {
4392: @{$allfiles->{$file}} = (&escape($type));
4393: }
4394: }
4395:
4396: sub embedded_dependency {
4397: my ($allfiles,$related,$identifier,$pathfrom) = @_;
4398: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
4399: if (($identifier ne '') &&
4400: (ref($related->{$identifier}) eq 'ARRAY') &&
4401: ($pathfrom ne '')) {
4402: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
4403: foreach my $dep (@{$related->{$identifier}}) {
4404: &add_filetype($allfiles,$path.$dep,'object');
4405: }
4406: }
4407: }
4408: return;
4409: }
4410:
4411: sub bubblesheet_converter {
4412: my ($cdom,$fullpath,$config,$format) = @_;
4413: if ((&domain($cdom) ne '') &&
4414: ($fullpath =~ m{^\Q$perlvar{'lonDocRoot'}/userfiles/$cdom/\E$match_courseid/scantron_orig}) &&
4415: (-e $fullpath) && (ref($config) eq 'HASH') && ($format ne '')) {
4416: my (%csvcols,%csvoptions);
4417: if (ref($config->{'fields'}) eq 'HASH') {
4418: %csvcols = %{$config->{'fields'}};
4419: }
4420: if (ref($config->{'options'}) eq 'HASH') {
4421: %csvoptions = %{$config->{'options'}};
4422: }
4423: my %csvbynum = reverse(%csvcols);
4424: my %scantronconf = &get_scantron_config($format,$cdom);
4425: if (keys(%scantronconf)) {
4426: my %bynum = (
4427: $scantronconf{CODEstart} => 'CODEstart',
4428: $scantronconf{IDstart} => 'IDstart',
4429: $scantronconf{PaperID} => 'PaperID',
4430: $scantronconf{FirstName} => 'FirstName',
4431: $scantronconf{LastName} => 'LastName',
4432: $scantronconf{Qstart} => 'Qstart',
4433: );
4434: my @ordered;
4435: foreach my $item (sort { $a <=> $b } keys(%bynum)) {
4436: push(@ordered,$bynum{$item});
4437: }
4438: my %mapstart = (
4439: CODEstart => 'CODE',
4440: IDstart => 'ID',
4441: PaperID => 'PaperID',
4442: FirstName => 'FirstName',
4443: LastName => 'LastName',
4444: Qstart => 'FirstQuestion',
4445: );
4446: my %maplength = (
4447: CODEstart => 'CODElength',
4448: IDstart => 'IDlength',
4449: PaperID => 'PaperIDlength',
4450: FirstName => 'FirstNamelength',
4451: LastName => 'LastNamelength',
4452: );
4453: if (open(my $fh,'<',$fullpath)) {
4454: my $output;
4455: my %lettdig = &letter_to_digits();
4456: my %diglett = reverse(%lettdig);
4457: my $numletts = scalar(keys(%lettdig));
4458: my $num = 0;
4459: while (my $line=<$fh>) {
4460: $num ++;
4461: next if (($num == 1) && ($csvoptions{'hdr'} == 1));
4462: $line =~ s{[\r\n]+$}{};
4463: my %found;
4464: my @values = split(/,/,$line);
4465: my ($qstart,$record);
4466: for (my $i=0; $i<@values; $i++) {
4467: if ((($qstart ne '') && ($i > $qstart)) ||
4468: ($csvbynum{$i} eq 'FirstQuestion')) {
4469: if ($values[$i] eq '') {
4470: $values[$i] = $scantronconf{'Qoff'};
4471: } elsif ($scantronconf{'Qon'} eq 'number') {
4472: if ($values[$i] =~ /^[A-Ja-j]$/) {
4473: $values[$i] = $lettdig{uc($values[$i])};
4474: }
4475: } elsif ($scantronconf{'Qon'} eq 'letter') {
4476: if ($values[$i] =~ /^[0-9]$/) {
4477: $values[$i] = $diglett{$values[$i]};
4478: }
4479: } else {
4480: if ($values[$i] =~ /^[0-9A-Ja-j]$/) {
4481: my $digit;
4482: if ($values[$i] =~ /^[A-Ja-j]$/) {
4483: $digit = $lettdig{uc($values[$i])}-1;
4484: if ($values[$i] eq 'J') {
4485: $digit += $numletts;
4486: }
4487: } elsif ($values[$i] =~ /^[0-9]$/) {
4488: $digit = $values[$i]-1;
4489: if ($values[$i] eq '0') {
4490: $digit += $numletts;
4491: }
4492: }
4493: my $qval='';
4494: for (my $j=0; $j<$scantronconf{'Qlength'}; $j++) {
4495: if ($j == $digit) {
4496: $qval .= $scantronconf{'Qon'};
4497: } else {
4498: $qval .= $scantronconf{'Qoff'};
4499: }
4500: }
4501: $values[$i] = $qval;
4502: }
4503: }
4504: if (length($values[$i]) > $scantronconf{'Qlength'}) {
4505: $values[$i] = substr($values[$i],0,$scantronconf{'Qlength'});
4506: }
4507: my $numblank = $scantronconf{'Qlength'} - length($values[$i]);
4508: if ($numblank > 0) {
4509: $values[$i] .= ($scantronconf{'Qoff'} x $numblank);
4510: }
4511: if ($csvbynum{$i} eq 'FirstQuestion') {
4512: $qstart = $i;
4513: $found{$csvbynum{$i}} = $values[$i];
4514: } else {
4515: $found{'FirstQuestion'} .= $values[$i];
4516: }
4517: } elsif (exists($csvbynum{$i})) {
4518: if ($csvoptions{'rem'}) {
4519: $values[$i] =~ s/^\s+//;
4520: }
4521: if (($csvbynum{$i} eq 'PaperID') && ($csvoptions{'pad'})) {
4522: while (length($values[$i]) < $scantronconf{$maplength{$csvbynum{$i}}}) {
4523: $values[$i] = '0'.$values[$i];
4524: }
4525: }
4526: $found{$csvbynum{$i}} = $values[$i];
4527: }
4528: }
4529: foreach my $item (@ordered) {
4530: my $currlength = 1+length($record);
4531: my $numspaces = $scantronconf{$item} - $currlength;
4532: if ($numspaces > 0) {
4533: $record .= (' ' x $numspaces);
4534: }
4535: if (($mapstart{$item} ne '') && (exists($found{$mapstart{$item}}))) {
4536: unless ($item eq 'Qstart') {
4537: if (length($found{$mapstart{$item}}) > $scantronconf{$maplength{$item}}) {
4538: $found{$mapstart{$item}} = substr($found{$mapstart{$item}},0,$scantronconf{$maplength{$item}});
4539: }
4540: }
4541: $record .= $found{$mapstart{$item}};
4542: }
4543: }
4544: $output .= "$record\n";
4545: }
4546: close($fh);
4547: if ($output) {
4548: if (open(my $fh,'>',$fullpath)) {
4549: print $fh $output;
4550: close($fh);
4551: }
4552: }
4553: }
4554: }
4555: return;
4556: }
4557: }
4558:
4559: sub letter_to_digits {
4560: my %lettdig = (
4561: A => 1,
4562: B => 2,
4563: C => 3,
4564: D => 4,
4565: E => 5,
4566: F => 6,
4567: G => 7,
4568: H => 8,
4569: I => 9,
4570: J => 0,
4571: );
4572: return %lettdig;
4573: }
4574:
4575: sub get_scantron_config {
4576: my ($which,$cdom) = @_;
4577: my @lines = &get_scantronformat_file($cdom);
4578: my %config;
4579: #FIXME probably should move to XML it has already gotten a bit much now
4580: foreach my $line (@lines) {
4581: my ($name,$descrip)=split(/:/,$line);
4582: if ($name ne $which ) { next; }
4583: chomp($line);
4584: my @config=split(/:/,$line);
4585: $config{'name'}=$config[0];
4586: $config{'description'}=$config[1];
4587: $config{'CODElocation'}=$config[2];
4588: $config{'CODEstart'}=$config[3];
4589: $config{'CODElength'}=$config[4];
4590: $config{'IDstart'}=$config[5];
4591: $config{'IDlength'}=$config[6];
4592: $config{'Qstart'}=$config[7];
4593: $config{'Qlength'}=$config[8];
4594: $config{'Qoff'}=$config[9];
4595: $config{'Qon'}=$config[10];
4596: $config{'PaperID'}=$config[11];
4597: $config{'PaperIDlength'}=$config[12];
4598: $config{'FirstName'}=$config[13];
4599: $config{'FirstNamelength'}=$config[14];
4600: $config{'LastName'}=$config[15];
4601: $config{'LastNamelength'}=$config[16];
4602: $config{'BubblesPerRow'}=$config[17];
4603: last;
4604: }
4605: return %config;
4606: }
4607:
4608: sub get_scantronformat_file {
4609: my ($cdom) = @_;
4610: if ($cdom eq '') {
4611: $cdom= $env{'course.'.$env{'request.course.id'}.'.domain'};
4612: }
4613: my %domconfig = &get_dom('configuration',['scantron'],$cdom);
4614: my $gottab = 0;
4615: my @lines;
4616: if (ref($domconfig{'scantron'}) eq 'HASH') {
4617: if ($domconfig{'scantron'}{'scantronformat'} ne '') {
4618: my $formatfile = &getfile($perlvar{'lonDocRoot'}.$domconfig{'scantron'}{'scantronformat'});
4619: if ($formatfile ne '-1') {
4620: @lines = split("\n",$formatfile,-1);
4621: $gottab = 1;
4622: }
4623: }
4624: }
4625: if (!$gottab) {
4626: my $confname = $cdom.'-domainconfig';
4627: my $default = $perlvar{'lonDocRoot'}.'/res/'.$cdom.'/'.$confname.'/default.tab';
4628: my $formatfile = &getfile($default);
4629: if ($formatfile ne '-1') {
4630: @lines = split("\n",$formatfile,-1);
4631: $gottab = 1;
4632: }
4633: }
4634: if (!$gottab) {
4635: my @domains = ¤t_machine_domains();
4636: if (grep(/^\Q$cdom\E$/,@domains)) {
4637: if (open(my $fh,'<',$perlvar{'lonTabDir'}.'/scantronformat.tab')) {
4638: @lines = <$fh>;
4639: close($fh);
4640: }
4641: } else {
4642: if (open(my $fh,'<',$perlvar{'lonTabDir'}.'/default_scantronformat.tab')) {
4643: @lines = <$fh>;
4644: close($fh);
4645: }
4646: }
4647: }
4648: return @lines;
4649: }
4650:
4651: sub removeuploadedurl {
4652: my ($url)=@_;
4653: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
4654: return &removeuserfile($uname,$udom,$fname);
4655: }
4656:
4657: sub removeuserfile {
4658: my ($docuname,$docudom,$fname)=@_;
4659: my $home=&homeserver($docuname,$docudom);
4660: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
4661: if ($result eq 'ok') {
4662: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
4663: my $metafile = $fname.'.meta';
4664: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
4665: my $url = "/uploaded/$docudom/$docuname/$fname";
4666: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
4667: my $sqlresult =
4668: &update_portfolio_table($docuname,$docudom,$file,
4669: 'portfolio_metadata',$group,
4670: 'delete');
4671: }
4672: }
4673: return $result;
4674: }
4675:
4676: sub mkdiruserfile {
4677: my ($docuname,$docudom,$dir)=@_;
4678: my $home=&homeserver($docuname,$docudom);
4679: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
4680: }
4681:
4682: sub renameuserfile {
4683: my ($docuname,$docudom,$old,$new)=@_;
4684: my $home=&homeserver($docuname,$docudom);
4685: my $result = &reply("renameuserfile:$docudom:$docuname:".
4686: &escape("$old").':'.&escape("$new"),$home);
4687: if ($result eq 'ok') {
4688: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
4689: my $oldmeta = $old.'.meta';
4690: my $newmeta = $new.'.meta';
4691: my $metaresult =
4692: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
4693: my $url = "/uploaded/$docudom/$docuname/$old";
4694: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
4695: my $sqlresult =
4696: &update_portfolio_table($docuname,$docudom,$file,
4697: 'portfolio_metadata',$group,
4698: 'delete');
4699: }
4700: }
4701: return $result;
4702: }
4703:
4704: # ------------------------------------------------------------------------- Log
4705:
4706: sub log {
4707: my ($dom,$nam,$hom,$what)=@_;
4708: return critical("log:$dom:$nam:$what",$hom);
4709: }
4710:
4711: # ------------------------------------------------------------------ Course Log
4712: #
4713: # This routine flushes several buffers of non-mission-critical nature
4714: #
4715:
4716: sub flushcourselogs {
4717: &logthis('Flushing log buffers');
4718: #
4719: # course logs
4720: # This is a log of all transactions in a course, which can be used
4721: # for data mining purposes
4722: #
4723: # It also collects the courseid database, which lists last transaction
4724: # times and course titles for all courseids
4725: #
4726: my %courseidbuffer=();
4727: foreach my $crsid (keys(%courselogs)) {
4728: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
4729: &escape($courselogs{$crsid}),
4730: $coursehombuf{$crsid}) eq 'ok') {
4731: delete $courselogs{$crsid};
4732: } else {
4733: &logthis('Failed to flush log buffer for '.$crsid);
4734: if (length($courselogs{$crsid})>40000) {
4735: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
4736: " exceeded maximum size, deleting.</font>");
4737: delete $courselogs{$crsid};
4738: }
4739: }
4740: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
4741: 'description' => $coursedescrbuf{$crsid},
4742: 'inst_code' => $courseinstcodebuf{$crsid},
4743: 'type' => $coursetypebuf{$crsid},
4744: 'owner' => $courseownerbuf{$crsid},
4745: };
4746: }
4747: #
4748: # Write course id database (reverse lookup) to homeserver of courses
4749: # Is used in pickcourse
4750: #
4751: foreach my $crs_home (keys(%courseidbuffer)) {
4752: my $response = &courseidput(&host_domain($crs_home),
4753: $courseidbuffer{$crs_home},
4754: $crs_home,'timeonly');
4755: }
4756: #
4757: # File accesses
4758: # Writes to the dynamic metadata of resources to get hit counts, etc.
4759: #
4760: foreach my $entry (keys(%accesshash)) {
4761: if ($entry =~ /___count$/) {
4762: my ($dom,$name);
4763: ($dom,$name,undef)=
4764: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
4765: if (! defined($dom) || $dom eq '' ||
4766: ! defined($name) || $name eq '') {
4767: my $cid = $env{'request.course.id'};
4768: $dom = $env{'request.'.$cid.'.domain'};
4769: $name = $env{'request.'.$cid.'.num'};
4770: }
4771: my $value = $accesshash{$entry};
4772: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
4773: my %temphash=($url => $value);
4774: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
4775: if ($result eq 'ok') {
4776: delete $accesshash{$entry};
4777: }
4778: } else {
4779: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
4780: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
4781: my %temphash=($entry => $accesshash{$entry});
4782: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
4783: delete $accesshash{$entry};
4784: }
4785: }
4786: }
4787: #
4788: # Roles
4789: # Reverse lookup of user roles for course faculty/staff and co-authorship
4790: #
4791: foreach my $entry (keys(%userrolehash)) {
4792: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
4793: split(/\:/,$entry);
4794: if (&Apache::lonnet::put('nohist_userroles',
4795: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
4796: $rudom,$runame) eq 'ok') {
4797: delete $userrolehash{$entry};
4798: }
4799: }
4800: #
4801: # Reverse lookup of domain roles (dc, ad, li, sc, dh, da, au)
4802: #
4803: my %domrolebuffer = ();
4804: foreach my $entry (keys(%domainrolehash)) {
4805: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
4806: if ($domrolebuffer{$rudom}) {
4807: $domrolebuffer{$rudom}.='&'.&escape($entry).
4808: '='.&escape($domainrolehash{$entry});
4809: } else {
4810: $domrolebuffer{$rudom}.=&escape($entry).
4811: '='.&escape($domainrolehash{$entry});
4812: }
4813: delete $domainrolehash{$entry};
4814: }
4815: foreach my $dom (keys(%domrolebuffer)) {
4816: my %servers;
4817: if (defined(&domain($dom,'primary'))) {
4818: my $primary=&domain($dom,'primary');
4819: my $hostname=&hostname($primary);
4820: $servers{$primary} = $hostname;
4821: } else {
4822: %servers = &get_servers($dom,'library');
4823: }
4824: foreach my $tryserver (keys(%servers)) {
4825: if (&reply('domroleput:'.$dom.':'.
4826: $domrolebuffer{$dom},$tryserver) eq 'ok') {
4827: last;
4828: } else {
4829: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
4830: }
4831: }
4832: }
4833: $dumpcount++;
4834: }
4835:
4836: sub courselog {
4837: my $what=shift;
4838: $what=time.':'.$what;
4839: unless ($env{'request.course.id'}) { return ''; }
4840: $coursedombuf{$env{'request.course.id'}}=
4841: $env{'course.'.$env{'request.course.id'}.'.domain'};
4842: $coursenumbuf{$env{'request.course.id'}}=
4843: $env{'course.'.$env{'request.course.id'}.'.num'};
4844: $coursehombuf{$env{'request.course.id'}}=
4845: $env{'course.'.$env{'request.course.id'}.'.home'};
4846: $coursedescrbuf{$env{'request.course.id'}}=
4847: $env{'course.'.$env{'request.course.id'}.'.description'};
4848: $courseinstcodebuf{$env{'request.course.id'}}=
4849: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
4850: $courseownerbuf{$env{'request.course.id'}}=
4851: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
4852: $coursetypebuf{$env{'request.course.id'}}=
4853: $env{'course.'.$env{'request.course.id'}.'.type'};
4854: if (defined $courselogs{$env{'request.course.id'}}) {
4855: $courselogs{$env{'request.course.id'}}.='&'.$what;
4856: } else {
4857: $courselogs{$env{'request.course.id'}}.=$what;
4858: }
4859: if (length($courselogs{$env{'request.course.id'}})>4048) {
4860: &flushcourselogs();
4861: }
4862: }
4863:
4864: sub courseacclog {
4865: my $fnsymb=shift;
4866: unless ($env{'request.course.id'}) { return ''; }
4867: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
4868: if ($fnsymb=~/$LONCAPA::assess_re/) {
4869: $what.=':POST';
4870: # FIXME: Probably ought to escape things....
4871: foreach my $key (keys(%env)) {
4872: if ($key=~/^form\.(.*)/) {
4873: my $formitem = $1;
4874: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
4875: $what.=':'.$formitem.'='.$env{$key};
4876: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
4877: $what.=':'.$formitem.'='.$env{$key};
4878: }
4879: }
4880: }
4881: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
4882: # FIXME: We should not be depending on a form parameter that someone
4883: # editing lonsearchcat.pm might change in the future.
4884: if ($env{'form.phase'} eq 'course_search') {
4885: $what.= ':POST';
4886: # FIXME: Probably ought to escape things....
4887: foreach my $element ('courseexp','crsfulltext','crsrelated',
4888: 'crsdiscuss') {
4889: $what.=':'.$element.'='.$env{'form.'.$element};
4890: }
4891: }
4892: }
4893: &courselog($what);
4894: }
4895:
4896: sub countacc {
4897: my $url=&declutter(shift);
4898: return if (! defined($url) || $url eq '');
4899: unless ($env{'request.course.id'}) { return ''; }
4900: #
4901: # Mark that this url was used in this course
4902: #
4903: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
4904: #
4905: # Increase the access count for this resource in this child process
4906: #
4907: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
4908: $accesshash{$key}++;
4909: }
4910:
4911: sub linklog {
4912: my ($from,$to)=@_;
4913: $from=&declutter($from);
4914: $to=&declutter($to);
4915: $accesshash{$from.'___'.$to.'___comefrom'}=1;
4916: $accesshash{$to.'___'.$from.'___goto'}=1;
4917: }
4918:
4919: sub statslog {
4920: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
4921: if ($users<2) { return; }
4922: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
4923: 'course' => $env{'request.course.id'},
4924: 'sections' => '"all"',
4925: 'num_students' => $users,
4926: 'part' => $part,
4927: 'symb' => $symb,
4928: 'mean_tries' => $av_attempts,
4929: 'deg_of_diff' => $degdiff});
4930: foreach my $key (keys(%dynstore)) {
4931: $accesshash{$key}=$dynstore{$key};
4932: }
4933: }
4934:
4935: sub userrolelog {
4936: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
4937: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
4938: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
4939: $userrolehash
4940: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
4941: =$tend.':'.$tstart;
4942: }
4943: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
4944: $userrolehash
4945: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
4946: =$tend.':'.$tstart;
4947: }
4948: if ($trole =~ /^(dc|ad|li|au|dg|sc|dh|da)/ ) {
4949: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
4950: $domainrolehash
4951: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
4952: = $tend.':'.$tstart;
4953: }
4954: }
4955:
4956: sub courserolelog {
4957: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
4958: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
4959: my $cdom = $1;
4960: my $cnum = $2;
4961: my $sec = $3;
4962: my $namespace = 'rolelog';
4963: my %storehash = (
4964: role => $trole,
4965: start => $tstart,
4966: end => $tend,
4967: selfenroll => $selfenroll,
4968: context => $context,
4969: );
4970: if ($trole eq 'gr') {
4971: $namespace = 'groupslog';
4972: $storehash{'group'} = $sec;
4973: } else {
4974: $storehash{'section'} = $sec;
4975: }
4976: &write_log('course',$namespace,\%storehash,$delflag,$username,
4977: $domain,$cnum,$cdom);
4978: if (($trole ne 'st') || ($sec ne '')) {
4979: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
4980: }
4981: }
4982: return;
4983: }
4984:
4985: sub domainrolelog {
4986: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
4987: if ($area =~ m{^/($match_domain)/$}) {
4988: my $cdom = $1;
4989: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
4990: my $namespace = 'rolelog';
4991: my %storehash = (
4992: role => $trole,
4993: start => $tstart,
4994: end => $tend,
4995: context => $context,
4996: );
4997: &write_log('domain',$namespace,\%storehash,$delflag,$username,
4998: $domain,$domconfiguser,$cdom);
4999: }
5000: return;
5001:
5002: }
5003:
5004: sub coauthorrolelog {
5005: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
5006: if ($area =~ m{^/($match_domain)/($match_username)$}) {
5007: my $audom = $1;
5008: my $auname = $2;
5009: my $namespace = 'rolelog';
5010: my %storehash = (
5011: role => $trole,
5012: start => $tstart,
5013: end => $tend,
5014: context => $context,
5015: );
5016: &write_log('author',$namespace,\%storehash,$delflag,$username,
5017: $domain,$auname,$audom);
5018: }
5019: return;
5020: }
5021:
5022: sub get_course_adv_roles {
5023: my ($cid,$codes) = @_;
5024: $cid=$env{'request.course.id'} unless (defined($cid));
5025: my %coursehash=&coursedescription($cid);
5026: my $crstype = &Apache::loncommon::course_type($cid);
5027: my %nothide=();
5028: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
5029: if ($user !~ /:/) {
5030: $nothide{join(':',split(/[\@]/,$user))}=1;
5031: } else {
5032: $nothide{$user}=1;
5033: }
5034: }
5035: my @possdoms = ($coursehash{'domain'});
5036: if ($coursehash{'checkforpriv'}) {
5037: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
5038: }
5039: my %returnhash=();
5040: my %dumphash=
5041: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
5042: my $now=time;
5043: my %privileged;
5044: foreach my $entry (keys(%dumphash)) {
5045: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
5046: if (($tstart) && ($tstart<0)) { next; }
5047: if (($tend) && ($tend<$now)) { next; }
5048: if (($tstart) && ($now<$tstart)) { next; }
5049: my ($role,$username,$domain,$section)=split(/\:/,$entry);
5050: if ($username eq '' || $domain eq '') { next; }
5051: if ((&privileged($username,$domain,\@possdoms)) &&
5052: (!$nothide{$username.':'.$domain})) { next; }
5053: if ($role eq 'cr') { next; }
5054: if ($codes) {
5055: if ($section) { $role .= ':'.$section; }
5056: if ($returnhash{$role}) {
5057: $returnhash{$role}.=','.$username.':'.$domain;
5058: } else {
5059: $returnhash{$role}=$username.':'.$domain;
5060: }
5061: } else {
5062: my $key=&plaintext($role,$crstype);
5063: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
5064: if ($returnhash{$key}) {
5065: $returnhash{$key}.=','.$username.':'.$domain;
5066: } else {
5067: $returnhash{$key}=$username.':'.$domain;
5068: }
5069: }
5070: }
5071: return %returnhash;
5072: }
5073:
5074: sub get_my_roles {
5075: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
5076: unless (defined($uname)) { $uname=$env{'user.name'}; }
5077: unless (defined($udom)) { $udom=$env{'user.domain'}; }
5078: my (%dumphash,%nothide);
5079: if ($context eq 'userroles') {
5080: %dumphash = &dump('roles',$udom,$uname);
5081: } else {
5082: %dumphash = &dump('nohist_userroles',$udom,$uname);
5083: if ($hidepriv) {
5084: my %coursehash=&coursedescription($udom.'_'.$uname);
5085: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
5086: if ($user !~ /:/) {
5087: $nothide{join(':',split(/[\@]/,$user))} = 1;
5088: } else {
5089: $nothide{$user} = 1;
5090: }
5091: }
5092: }
5093: }
5094: my %returnhash=();
5095: my $now=time;
5096: my %privileged;
5097: foreach my $entry (keys(%dumphash)) {
5098: my ($role,$tend,$tstart);
5099: if ($context eq 'userroles') {
5100: next if ($entry =~ /^rolesdef/);
5101: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
5102: } else {
5103: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
5104: }
5105: if (($tstart) && ($tstart<0)) { next; }
5106: my $status = 'active';
5107: if (($tend) && ($tend<=$now)) {
5108: $status = 'previous';
5109: }
5110: if (($tstart) && ($now<$tstart)) {
5111: $status = 'future';
5112: }
5113: if (ref($types) eq 'ARRAY') {
5114: if (!grep(/^\Q$status\E$/,@{$types})) {
5115: next;
5116: }
5117: } else {
5118: if ($status ne 'active') {
5119: next;
5120: }
5121: }
5122: my ($rolecode,$username,$domain,$section,$area);
5123: if ($context eq 'userroles') {
5124: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
5125: (undef,$domain,$username,$section) = split(/\//,$area);
5126: } else {
5127: ($role,$username,$domain,$section) = split(/\:/,$entry);
5128: }
5129: if (ref($roledoms) eq 'ARRAY') {
5130: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
5131: next;
5132: }
5133: }
5134: if (ref($roles) eq 'ARRAY') {
5135: if (!grep(/^\Q$role\E$/,@{$roles})) {
5136: if ($role =~ /^cr\//) {
5137: if (!grep(/^cr$/,@{$roles})) {
5138: next;
5139: }
5140: } elsif ($role =~ /^gr\//) {
5141: if (!grep(/^gr$/,@{$roles})) {
5142: next;
5143: }
5144: } else {
5145: next;
5146: }
5147: }
5148: }
5149: if ($hidepriv) {
5150: my @privroles = ('dc','su');
5151: if ($context eq 'userroles') {
5152: next if (grep(/^\Q$role\E$/,@privroles));
5153: } else {
5154: my $possdoms = [$domain];
5155: if (ref($roledoms) eq 'ARRAY') {
5156: push(@{$possdoms},@{$roledoms});
5157: }
5158: if (&privileged($username,$domain,$possdoms,\@privroles)) {
5159: if (!$nothide{$username.':'.$domain}) {
5160: next;
5161: }
5162: }
5163: }
5164: }
5165: if ($withsec) {
5166: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
5167: $tstart.':'.$tend;
5168: } else {
5169: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
5170: }
5171: }
5172: return %returnhash;
5173: }
5174:
5175: sub get_all_adhocroles {
5176: my ($dom) = @_;
5177: my @roles_by_num = ();
5178: my %domdefaults = &get_domain_defaults($dom);
5179: my (%description,%access_in_dom,%access_info);
5180: if (ref($domdefaults{'adhocroles'}) eq 'HASH') {
5181: my $count = 0;
5182: my %domcurrent = %{$domdefaults{'adhocroles'}};
5183: my %ordered;
5184: foreach my $role (sort(keys(%domcurrent))) {
5185: my ($order,$desc,$access_in_dom);
5186: if (ref($domcurrent{$role}) eq 'HASH') {
5187: $order = $domcurrent{$role}{'order'};
5188: $desc = $domcurrent{$role}{'desc'};
5189: $access_in_dom{$role} = $domcurrent{$role}{'access'};
5190: $access_info{$role} = $domcurrent{$role}{$access_in_dom{$role}};
5191: }
5192: if ($order eq '') {
5193: $order = $count;
5194: }
5195: $ordered{$order} = $role;
5196: if ($desc ne '') {
5197: $description{$role} = $desc;
5198: } else {
5199: $description{$role}= $role;
5200: }
5201: $count++;
5202: }
5203: foreach my $item (sort {$a <=> $b } (keys(%ordered))) {
5204: push(@roles_by_num,$ordered{$item});
5205: }
5206: }
5207: return (\@roles_by_num,\%description,\%access_in_dom,\%access_info);
5208: }
5209:
5210: sub get_my_adhocroles {
5211: my ($cid,$checkreg) = @_;
5212: my ($cdom,$cnum,%info,@possroles,$description,$roles_by_num);
5213: if ($env{'request.course.id'} eq $cid) {
5214: $cdom = $env{'course.'.$cid.'.domain'};
5215: $cnum = $env{'course.'.$cid.'.num'};
5216: $info{'internal.coursecode'} = $env{'course.'.$cid.'.internal.coursecode'};
5217: } elsif ($cid =~ /^($match_domain)_($match_courseid)$/) {
5218: $cdom = $1;
5219: $cnum = $2;
5220: %info = &Apache::lonnet::get('environment',['internal.coursecode'],
5221: $cdom,$cnum);
5222: }
5223: if (($info{'internal.coursecode'} ne '') && ($checkreg)) {
5224: my $user = $env{'user.name'}.':'.$env{'user.domain'};
5225: my %rosterhash = &get('classlist',[$user],$cdom,$cnum);
5226: if ($rosterhash{$user} ne '') {
5227: my $type = (split(/:/,$rosterhash{$user}))[5];
5228: return ([],{}) if ($type eq 'auto');
5229: }
5230: }
5231: if (($cdom ne '') && ($cnum ne '')) {
5232: if (($env{"user.role.dh./$cdom/"}) || ($env{"user.role.da./$cdom/"})) {
5233: my $then=$env{'user.login.time'};
5234: my $update=$env{'user.update.time'};
5235: if (!$update) {
5236: $update = $then;
5237: }
5238: my @liveroles;
5239: foreach my $role ('dh','da') {
5240: if ($env{"user.role.$role./$cdom/"}) {
5241: my ($tstart,$tend)=split(/\./,$env{"user.role.$role./$cdom/"});
5242: my $limit = $update;
5243: if ($env{'request.role'} eq "$role./$cdom/") {
5244: $limit = $then;
5245: }
5246: my $activerole = 1;
5247: if ($tstart && $tstart>$limit) { $activerole = 0; }
5248: if ($tend && $tend <$limit) { $activerole = 0; }
5249: if ($activerole) {
5250: push(@liveroles,$role);
5251: }
5252: }
5253: }
5254: if (@liveroles) {
5255: if (&homeserver($cnum,$cdom) ne 'no_host') {
5256: my ($accessref,$accessinfo,%access_in_dom);
5257: ($roles_by_num,$description,$accessref,$accessinfo) = &get_all_adhocroles($cdom);
5258: if (ref($roles_by_num) eq 'ARRAY') {
5259: if (@{$roles_by_num}) {
5260: my %settings;
5261: if ($env{'request.course.id'} eq $cid) {
5262: foreach my $envkey (keys(%env)) {
5263: if ($envkey =~ /^\Qcourse.$cid.\E(internal\.adhoc.+)$/) {
5264: $settings{$1} = $env{$envkey};
5265: }
5266: }
5267: } else {
5268: %settings = &dump('environment',$cdom,$cnum,'internal\.adhoc');
5269: }
5270: my %setincrs;
5271: if ($settings{'internal.adhocaccess'}) {
5272: map { $setincrs{$_} = 1; } split(/,/,$settings{'internal.adhocaccess'});
5273: }
5274: my @statuses;
5275: if ($env{'environment.inststatus'}) {
5276: @statuses = split(/,/,$env{'environment.inststatus'});
5277: }
5278: my $user = $env{'user.name'}.':'.$env{'user.domain'};
5279: if (ref($accessref) eq 'HASH') {
5280: %access_in_dom = %{$accessref};
5281: }
5282: foreach my $role (@{$roles_by_num}) {
5283: my ($curraccess,@okstatus,@personnel);
5284: if ($setincrs{$role}) {
5285: ($curraccess,my $rest) = split(/=/,$settings{'internal.adhoc.'.$role});
5286: if ($curraccess eq 'status') {
5287: @okstatus = split(/\&/,$rest);
5288: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5289: @personnel = split(/\&/,$rest);
5290: }
5291: } else {
5292: $curraccess = $access_in_dom{$role};
5293: if (ref($accessinfo) eq 'HASH') {
5294: if ($curraccess eq 'status') {
5295: if (ref($accessinfo->{$role}) eq 'ARRAY') {
5296: @okstatus = @{$accessinfo->{$role}};
5297: }
5298: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5299: if (ref($accessinfo->{$role}) eq 'ARRAY') {
5300: @personnel = @{$accessinfo->{$role}};
5301: }
5302: }
5303: }
5304: }
5305: if ($curraccess eq 'none') {
5306: next;
5307: } elsif ($curraccess eq 'all') {
5308: push(@possroles,$role);
5309: } elsif ($curraccess eq 'dh') {
5310: if (grep(/^dh$/,@liveroles)) {
5311: push(@possroles,$role);
5312: } else {
5313: next;
5314: }
5315: } elsif ($curraccess eq 'da') {
5316: if (grep(/^da$/,@liveroles)) {
5317: push(@possroles,$role);
5318: } else {
5319: next;
5320: }
5321: } elsif ($curraccess eq 'status') {
5322: if (@okstatus) {
5323: if (!@statuses) {
5324: if (grep(/^default$/,@okstatus)) {
5325: push(@possroles,$role);
5326: }
5327: } else {
5328: foreach my $status (@okstatus) {
5329: if (grep(/^\Q$status\E$/,@statuses)) {
5330: push(@possroles,$role);
5331: last;
5332: }
5333: }
5334: }
5335: }
5336: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5337: if (grep(/^\Q$user\E$/,@personnel)) {
5338: if ($curraccess eq 'exc') {
5339: push(@possroles,$role);
5340: }
5341: } elsif ($curraccess eq 'inc') {
5342: push(@possroles,$role);
5343: }
5344: }
5345: }
5346: }
5347: }
5348: }
5349: }
5350: }
5351: }
5352: unless (ref($description) eq 'HASH') {
5353: if (ref($roles_by_num) eq 'ARRAY') {
5354: my %desc;
5355: map { $desc{$_} = $_; } (@{$roles_by_num});
5356: $description = \%desc;
5357: } else {
5358: $description = {};
5359: }
5360: }
5361: return (\@possroles,$description);
5362: }
5363:
5364: # ----------------------------------------------------- Frontpage Announcements
5365: #
5366: #
5367:
5368: sub postannounce {
5369: my ($server,$text)=@_;
5370: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
5371: unless ($text=~/\w/) { $text=''; }
5372: return &reply('setannounce:'.&escape($text),$server);
5373: }
5374:
5375: sub getannounce {
5376:
5377: if (open(my $fh,"<",$perlvar{'lonDocRoot'}.'/announcement.txt')) {
5378: my $announcement='';
5379: while (my $line = <$fh>) { $announcement .= $line; }
5380: close($fh);
5381: if ($announcement=~/\w/) {
5382: return
5383: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
5384: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
5385: } else {
5386: return '';
5387: }
5388: } else {
5389: return '';
5390: }
5391: }
5392:
5393: # ---------------------------------------------------------- Course ID routines
5394: # Deal with domain's nohist_courseid.db files
5395: #
5396:
5397: sub courseidput {
5398: my ($domain,$storehash,$coursehome,$caller) = @_;
5399: return unless (ref($storehash) eq 'HASH');
5400: my $outcome;
5401: if ($caller eq 'timeonly') {
5402: my $cids = '';
5403: foreach my $item (keys(%$storehash)) {
5404: $cids.=&escape($item).'&';
5405: }
5406: $cids=~s/\&$//;
5407: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
5408: $coursehome);
5409: } else {
5410: my $items = '';
5411: foreach my $item (keys(%$storehash)) {
5412: $items.= &escape($item).'='.
5413: &freeze_escape($$storehash{$item}).'&';
5414: }
5415: $items=~s/\&$//;
5416: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
5417: $coursehome);
5418: }
5419: if ($outcome eq 'unknown_cmd') {
5420: my $what;
5421: foreach my $cid (keys(%$storehash)) {
5422: $what .= &escape($cid).'=';
5423: foreach my $item ('description','inst_code','owner','type') {
5424: $what .= &escape($storehash->{$cid}{$item}).':';
5425: }
5426: $what =~ s/\:$/&/;
5427: }
5428: $what =~ s/\&$//;
5429: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
5430: } else {
5431: return $outcome;
5432: }
5433: }
5434:
5435: sub courseiddump {
5436: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
5437: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
5438: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
5439: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner,
5440: $hasuniquecode,$reqcrsdom,$reqinstcode)=@_;
5441: my $as_hash = 1;
5442: my %returnhash;
5443: if (!$domfilter) { $domfilter=''; }
5444: my %libserv = &all_library();
5445: foreach my $tryserver (keys(%libserv)) {
5446: if ( ( $hostidflag == 1
5447: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
5448: || (!defined($hostidflag)) ) {
5449:
5450: if (($domfilter eq '') ||
5451: (&host_domain($tryserver) eq $domfilter)) {
5452: my $rep;
5453: if (grep { $_ eq $tryserver } current_machine_ids()) {
5454: $rep = LONCAPA::Lond::dump_course_id_handler(
5455: join(":", (&host_domain($tryserver), $sincefilter,
5456: &escape($descfilter), &escape($instcodefilter),
5457: &escape($ownerfilter), &escape($coursefilter),
5458: &escape($typefilter), &escape($regexp_ok),
5459: $as_hash, &escape($selfenrollonly),
5460: &escape($catfilter), $showhidden, $caller,
5461: &escape($cloner), &escape($cc_clone), $cloneonly,
5462: &escape($createdbefore), &escape($createdafter),
5463: &escape($creationcontext),$domcloner,$hasuniquecode,
5464: $reqcrsdom,&escape($reqinstcode))));
5465: } else {
5466: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
5467: $sincefilter.':'.&escape($descfilter).':'.
5468: &escape($instcodefilter).':'.&escape($ownerfilter).
5469: ':'.&escape($coursefilter).':'.&escape($typefilter).
5470: ':'.&escape($regexp_ok).':'.$as_hash.':'.
5471: &escape($selfenrollonly).':'.&escape($catfilter).':'.
5472: $showhidden.':'.$caller.':'.&escape($cloner).':'.
5473: &escape($cc_clone).':'.$cloneonly.':'.
5474: &escape($createdbefore).':'.&escape($createdafter).':'.
5475: &escape($creationcontext).':'.$domcloner.':'.$hasuniquecode.
5476: ':'.$reqcrsdom.':'.&escape($reqinstcode),$tryserver);
5477: }
5478:
5479: my @pairs=split(/\&/,$rep);
5480: foreach my $item (@pairs) {
5481: my ($key,$value)=split(/\=/,$item,2);
5482: $key = &unescape($key);
5483: next if ($key =~ /^error: 2 /);
5484: my $result = &thaw_unescape($value);
5485: if (ref($result) eq 'HASH') {
5486: $returnhash{$key}=$result;
5487: } else {
5488: my @responses = split(/:/,$value);
5489: my @items = ('description','inst_code','owner','type');
5490: for (my $i=0; $i<@responses; $i++) {
5491: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
5492: }
5493: }
5494: }
5495: }
5496: }
5497: }
5498: return %returnhash;
5499: }
5500:
5501: sub courselastaccess {
5502: my ($cdom,$cnum,$hostidref) = @_;
5503: my %returnhash;
5504: if ($cdom && $cnum) {
5505: my $chome = &homeserver($cnum,$cdom);
5506: if ($chome ne 'no_host') {
5507: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
5508: &extract_lastaccess(\%returnhash,$rep);
5509: }
5510: } else {
5511: if (!$cdom) { $cdom=''; }
5512: my %libserv = &all_library();
5513: foreach my $tryserver (keys(%libserv)) {
5514: if (ref($hostidref) eq 'ARRAY') {
5515: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
5516: }
5517: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
5518: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
5519: &extract_lastaccess(\%returnhash,$rep);
5520: }
5521: }
5522: }
5523: return %returnhash;
5524: }
5525:
5526: sub extract_lastaccess {
5527: my ($returnhash,$rep) = @_;
5528: if (ref($returnhash) eq 'HASH') {
5529: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
5530: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
5531: $rep eq '') {
5532: my @pairs=split(/\&/,$rep);
5533: foreach my $item (@pairs) {
5534: my ($key,$value)=split(/\=/,$item,2);
5535: $key = &unescape($key);
5536: next if ($key =~ /^error: 2 /);
5537: $returnhash->{$key} = &thaw_unescape($value);
5538: }
5539: }
5540: }
5541: return;
5542: }
5543:
5544: # ---------------------------------------------------------- DC e-mail
5545:
5546: sub dcmailput {
5547: my ($domain,$msgid,$message,$server)=@_;
5548: my $status = &Apache::lonnet::critical(
5549: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
5550: &escape($message),$server);
5551: return $status;
5552: }
5553:
5554: sub dcmaildump {
5555: my ($dom,$startdate,$enddate,$senders) = @_;
5556: my %returnhash=();
5557:
5558: if (defined(&domain($dom,'primary'))) {
5559: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
5560: &escape($enddate).':';
5561: my @esc_senders=map { &escape($_)} @$senders;
5562: $cmd.=&escape(join('&',@esc_senders));
5563: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
5564: my ($key,$value) = split(/\=/,$line,2);
5565: if (($key) && ($value)) {
5566: $returnhash{&unescape($key)} = &unescape($value);
5567: }
5568: }
5569: }
5570: return %returnhash;
5571: }
5572: # ---------------------------------------------------------- Domain roles
5573:
5574: sub get_domain_roles {
5575: my ($dom,$roles,$startdate,$enddate)=@_;
5576: if ((!defined($startdate)) || ($startdate eq '')) {
5577: $startdate = '.';
5578: }
5579: if ((!defined($enddate)) || ($enddate eq '')) {
5580: $enddate = '.';
5581: }
5582: my $rolelist;
5583: if (ref($roles) eq 'ARRAY') {
5584: $rolelist = join('&',@{$roles});
5585: }
5586: my %personnel = ();
5587:
5588: my %servers = &get_servers($dom,'library');
5589: foreach my $tryserver (keys(%servers)) {
5590: %{$personnel{$tryserver}}=();
5591: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
5592: &escape($startdate).':'.
5593: &escape($enddate).':'.
5594: &escape($rolelist), $tryserver))) {
5595: my ($key,$value) = split(/\=/,$line,2);
5596: if (($key) && ($value)) {
5597: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
5598: }
5599: }
5600: }
5601: return %personnel;
5602: }
5603:
5604: sub get_active_domroles {
5605: my ($dom,$roles) = @_;
5606: return () unless (ref($roles) eq 'ARRAY');
5607: my $now = time;
5608: my %dompersonnel = &get_domain_roles($dom,$roles,$now,$now);
5609: my %domroles;
5610: foreach my $server (keys(%dompersonnel)) {
5611: foreach my $user (sort(keys(%{$dompersonnel{$server}}))) {
5612: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,$user);
5613: $domroles{$uname.':'.$udom} = $dompersonnel{$server}{$user};
5614: }
5615: }
5616: return %domroles;
5617: }
5618:
5619: # ----------------------------------------------------------- Interval timing
5620:
5621: {
5622: # Caches needed for speedup of navmaps
5623: # We don't want to cache this for very long at all (5 seconds at most)
5624: #
5625: # The user for whom we cache
5626: my $cachedkey='';
5627: # The cached times for this user
5628: my %cachedtimes=();
5629: # When this was last done
5630: my $cachedtime='';
5631:
5632: sub load_all_first_access {
5633: my ($uname,$udom,$ignorecache)=@_;
5634: if (($cachedkey eq $uname.':'.$udom) &&
5635: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'}) &&
5636: (!$ignorecache)) {
5637: return;
5638: }
5639: $cachedtime=time;
5640: $cachedkey=$uname.':'.$udom;
5641: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
5642: }
5643:
5644: sub get_first_access {
5645: my ($type,$argsymb,$argmap,$ignorecache)=@_;
5646: my ($symb,$courseid,$udom,$uname)=&whichuser();
5647: if ($argsymb) { $symb=$argsymb; }
5648: my ($map,$id,$res)=&decode_symb($symb);
5649: if ($argmap) { $map = $argmap; }
5650: if ($type eq 'course') {
5651: $res='course';
5652: } elsif ($type eq 'map') {
5653: $res=&symbread($map);
5654: } else {
5655: $res=$symb;
5656: }
5657: &load_all_first_access($uname,$udom,$ignorecache);
5658: return $cachedtimes{"$courseid\0$res"};
5659: }
5660:
5661: sub set_first_access {
5662: my ($type,$interval)=@_;
5663: my ($symb,$courseid,$udom,$uname)=&whichuser();
5664: my ($map,$id,$res)=&decode_symb($symb);
5665: if ($type eq 'course') {
5666: $res='course';
5667: } elsif ($type eq 'map') {
5668: $res=&symbread($map);
5669: } else {
5670: $res=$symb;
5671: }
5672: $cachedkey='';
5673: my $firstaccess=&get_first_access($type,$symb,$map);
5674: if ($firstaccess) {
5675: &logthis("First access time already set ($firstaccess) when attempting ".
5676: "to set new value (type: $type, extent: $res) for $uname:$udom ".
5677: "in $courseid");
5678: return 'already_set';
5679: } else {
5680: my $start = time;
5681: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
5682: $udom,$uname);
5683: if ($putres eq 'ok') {
5684: &put('timerinterval',{"$courseid\0$res"=>$interval},
5685: $udom,$uname);
5686: &appenv(
5687: {
5688: 'course.'.$courseid.'.firstaccess.'.$res => $start,
5689: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
5690: }
5691: );
5692: if (($cachedtime) && (abs($start-$cachedtime) < 5)) {
5693: $cachedtimes{"$courseid\0$res"} = $start;
5694: }
5695: } elsif ($putres ne 'refused') {
5696: &logthis("Result: $putres when attempting to set first access time ".
5697: "(type: $type, extent: $res) for $uname:$udom in $courseid");
5698: }
5699: return $putres;
5700: }
5701: return 'already_set';
5702: }
5703: }
5704:
5705: # --------------------------------------------- Set Expire Date for Spreadsheet
5706:
5707: sub expirespread {
5708: my ($uname,$udom,$stype,$usymb)=@_;
5709: my $cid=$env{'request.course.id'};
5710: if ($cid) {
5711: my $now=time;
5712: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
5713: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
5714: $env{'course.'.$cid.'.num'}.
5715: ':nohist_expirationdates:'.
5716: &escape($key).'='.$now,
5717: $env{'course.'.$cid.'.home'})
5718: }
5719: return 'ok';
5720: }
5721:
5722: # ----------------------------------------------------- Devalidate Spreadsheets
5723:
5724: sub devalidate {
5725: my ($symb,$uname,$udom)=@_;
5726: my $cid=$env{'request.course.id'};
5727: if ($cid) {
5728: # delete the stored spreadsheets for
5729: # - the student level sheet of this user in course's homespace
5730: # - the assessment level sheet for this resource
5731: # for this user in user's homespace
5732: # - current conditional state info
5733: my $key=$uname.':'.$udom.':';
5734: my $status=
5735: &del('nohist_calculatedsheets',
5736: [$key.'studentcalc:'],
5737: $env{'course.'.$cid.'.domain'},
5738: $env{'course.'.$cid.'.num'})
5739: .' '.
5740: &del('nohist_calculatedsheets_'.$cid,
5741: [$key.'assesscalc:'.$symb],$udom,$uname);
5742: unless ($status eq 'ok ok') {
5743: &logthis('Could not devalidate spreadsheet '.
5744: $uname.' at '.$udom.' for '.
5745: $symb.': '.$status);
5746: }
5747: &delenv('user.state.'.$cid);
5748: }
5749: }
5750:
5751: sub get_scalar {
5752: my ($string,$end) = @_;
5753: my $value;
5754: if ($$string =~ s/^([^&]*?)($end)/$2/) {
5755: $value = $1;
5756: } elsif ($$string =~ s/^([^&]*?)&//) {
5757: $value = $1;
5758: }
5759: return &unescape($value);
5760: }
5761:
5762: sub array2str {
5763: my (@array) = @_;
5764: my $result=&arrayref2str(\@array);
5765: $result=~s/^__ARRAY_REF__//;
5766: $result=~s/__END_ARRAY_REF__$//;
5767: return $result;
5768: }
5769:
5770: sub arrayref2str {
5771: my ($arrayref) = @_;
5772: my $result='__ARRAY_REF__';
5773: foreach my $elem (@$arrayref) {
5774: if(ref($elem) eq 'ARRAY') {
5775: $result.=&arrayref2str($elem).'&';
5776: } elsif(ref($elem) eq 'HASH') {
5777: $result.=&hashref2str($elem).'&';
5778: } elsif(ref($elem)) {
5779: #print("Got a ref of ".(ref($elem))." skipping.");
5780: } else {
5781: $result.=&escape($elem).'&';
5782: }
5783: }
5784: $result=~s/\&$//;
5785: $result .= '__END_ARRAY_REF__';
5786: return $result;
5787: }
5788:
5789: sub hash2str {
5790: my (%hash) = @_;
5791: my $result=&hashref2str(\%hash);
5792: $result=~s/^__HASH_REF__//;
5793: $result=~s/__END_HASH_REF__$//;
5794: return $result;
5795: }
5796:
5797: sub hashref2str {
5798: my ($hashref)=@_;
5799: my $result='__HASH_REF__';
5800: foreach my $key (sort(keys(%$hashref))) {
5801: if (ref($key) eq 'ARRAY') {
5802: $result.=&arrayref2str($key).'=';
5803: } elsif (ref($key) eq 'HASH') {
5804: $result.=&hashref2str($key).'=';
5805: } elsif (ref($key)) {
5806: $result.='=';
5807: #print("Got a ref of ".(ref($key))." skipping.");
5808: } else {
5809: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
5810: }
5811:
5812: if(ref($hashref->{$key}) eq 'ARRAY') {
5813: $result.=&arrayref2str($hashref->{$key}).'&';
5814: } elsif(ref($hashref->{$key}) eq 'HASH') {
5815: $result.=&hashref2str($hashref->{$key}).'&';
5816: } elsif(ref($hashref->{$key})) {
5817: $result.='&';
5818: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
5819: } else {
5820: $result.=&escape($hashref->{$key}).'&';
5821: }
5822: }
5823: $result=~s/\&$//;
5824: $result .= '__END_HASH_REF__';
5825: return $result;
5826: }
5827:
5828: sub str2hash {
5829: my ($string)=@_;
5830: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
5831: return %$hash;
5832: }
5833:
5834: sub str2hashref {
5835: my ($string) = @_;
5836:
5837: my %hash;
5838:
5839: if($string !~ /^__HASH_REF__/) {
5840: if (! ($string eq '' || !defined($string))) {
5841: $hash{'error'}='Not hash reference';
5842: }
5843: return (\%hash, $string);
5844: }
5845:
5846: $string =~ s/^__HASH_REF__//;
5847:
5848: while($string !~ /^__END_HASH_REF__/) {
5849: #key
5850: my $key='';
5851: if($string =~ /^__HASH_REF__/) {
5852: ($key, $string)=&str2hashref($string);
5853: if(defined($key->{'error'})) {
5854: $hash{'error'}='Bad data';
5855: return (\%hash, $string);
5856: }
5857: } elsif($string =~ /^__ARRAY_REF__/) {
5858: ($key, $string)=&str2arrayref($string);
5859: if($key->[0] eq 'Array reference error') {
5860: $hash{'error'}='Bad data';
5861: return (\%hash, $string);
5862: }
5863: } else {
5864: $string =~ s/^(.*?)=//;
5865: $key=&unescape($1);
5866: }
5867: $string =~ s/^=//;
5868:
5869: #value
5870: my $value='';
5871: if($string =~ /^__HASH_REF__/) {
5872: ($value, $string)=&str2hashref($string);
5873: if(defined($value->{'error'})) {
5874: $hash{'error'}='Bad data';
5875: return (\%hash, $string);
5876: }
5877: } elsif($string =~ /^__ARRAY_REF__/) {
5878: ($value, $string)=&str2arrayref($string);
5879: if($value->[0] eq 'Array reference error') {
5880: $hash{'error'}='Bad data';
5881: return (\%hash, $string);
5882: }
5883: } else {
5884: $value=&get_scalar(\$string,'__END_HASH_REF__');
5885: }
5886: $string =~ s/^&//;
5887:
5888: $hash{$key}=$value;
5889: }
5890:
5891: $string =~ s/^__END_HASH_REF__//;
5892:
5893: return (\%hash, $string);
5894: }
5895:
5896: sub str2array {
5897: my ($string)=@_;
5898: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
5899: return @$array;
5900: }
5901:
5902: sub str2arrayref {
5903: my ($string) = @_;
5904: my @array;
5905:
5906: if($string !~ /^__ARRAY_REF__/) {
5907: if (! ($string eq '' || !defined($string))) {
5908: $array[0]='Array reference error';
5909: }
5910: return (\@array, $string);
5911: }
5912:
5913: $string =~ s/^__ARRAY_REF__//;
5914:
5915: while($string !~ /^__END_ARRAY_REF__/) {
5916: my $value='';
5917: if($string =~ /^__HASH_REF__/) {
5918: ($value, $string)=&str2hashref($string);
5919: if(defined($value->{'error'})) {
5920: $array[0] ='Array reference error';
5921: return (\@array, $string);
5922: }
5923: } elsif($string =~ /^__ARRAY_REF__/) {
5924: ($value, $string)=&str2arrayref($string);
5925: if($value->[0] eq 'Array reference error') {
5926: $array[0] ='Array reference error';
5927: return (\@array, $string);
5928: }
5929: } else {
5930: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
5931: }
5932: $string =~ s/^&//;
5933:
5934: push(@array, $value);
5935: }
5936:
5937: $string =~ s/^__END_ARRAY_REF__//;
5938:
5939: return (\@array, $string);
5940: }
5941:
5942: # -------------------------------------------------------------------Temp Store
5943:
5944: sub tmpreset {
5945: my ($symb,$namespace,$domain,$stuname) = @_;
5946: if (!$symb) {
5947: $symb=&symbread();
5948: if (!$symb) { $symb= $env{'request.url'}; }
5949: }
5950: $symb=escape($symb);
5951:
5952: if (!$namespace) { $namespace=$env{'request.state'}; }
5953: $namespace=~s/\//\_/g;
5954: $namespace=~s/\W//g;
5955:
5956: if (!$domain) { $domain=$env{'user.domain'}; }
5957: if (!$stuname) { $stuname=$env{'user.name'}; }
5958: if ($domain eq 'public' && $stuname eq 'public') {
5959: $stuname=$ENV{'REMOTE_ADDR'};
5960: }
5961: my $path=LONCAPA::tempdir();
5962: my %hash;
5963: if (tie(%hash,'GDBM_File',
5964: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5965: &GDBM_WRCREAT(),0640)) {
5966: foreach my $key (keys(%hash)) {
5967: if ($key=~ /:$symb/) {
5968: delete($hash{$key});
5969: }
5970: }
5971: }
5972: }
5973:
5974: sub tmpstore {
5975: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
5976:
5977: if (!$symb) {
5978: $symb=&symbread();
5979: if (!$symb) { $symb= $env{'request.url'}; }
5980: }
5981: $symb=escape($symb);
5982:
5983: if (!$namespace) {
5984: # I don't think we would ever want to store this for a course.
5985: # it seems this will only be used if we don't have a course.
5986: #$namespace=$env{'request.course.id'};
5987: #if (!$namespace) {
5988: $namespace=$env{'request.state'};
5989: #}
5990: }
5991: $namespace=~s/\//\_/g;
5992: $namespace=~s/\W//g;
5993: if (!$domain) { $domain=$env{'user.domain'}; }
5994: if (!$stuname) { $stuname=$env{'user.name'}; }
5995: if ($domain eq 'public' && $stuname eq 'public') {
5996: $stuname=$ENV{'REMOTE_ADDR'};
5997: }
5998: my $now=time;
5999: my %hash;
6000: my $path=LONCAPA::tempdir();
6001: if (tie(%hash,'GDBM_File',
6002: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
6003: &GDBM_WRCREAT(),0640)) {
6004: $hash{"version:$symb"}++;
6005: my $version=$hash{"version:$symb"};
6006: my $allkeys='';
6007: foreach my $key (keys(%$storehash)) {
6008: $allkeys.=$key.':';
6009: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
6010: }
6011: $hash{"$version:$symb:timestamp"}=$now;
6012: $allkeys.='timestamp';
6013: $hash{"$version:keys:$symb"}=$allkeys;
6014: if (untie(%hash)) {
6015: return 'ok';
6016: } else {
6017: return "error:$!";
6018: }
6019: } else {
6020: return "error:$!";
6021: }
6022: }
6023:
6024: # -----------------------------------------------------------------Temp Restore
6025:
6026: sub tmprestore {
6027: my ($symb,$namespace,$domain,$stuname) = @_;
6028:
6029: if (!$symb) {
6030: $symb=&symbread();
6031: if (!$symb) { $symb= $env{'request.url'}; }
6032: }
6033: $symb=escape($symb);
6034:
6035: if (!$namespace) { $namespace=$env{'request.state'}; }
6036:
6037: if (!$domain) { $domain=$env{'user.domain'}; }
6038: if (!$stuname) { $stuname=$env{'user.name'}; }
6039: if ($domain eq 'public' && $stuname eq 'public') {
6040: $stuname=$ENV{'REMOTE_ADDR'};
6041: }
6042: my %returnhash;
6043: $namespace=~s/\//\_/g;
6044: $namespace=~s/\W//g;
6045: my %hash;
6046: my $path=LONCAPA::tempdir();
6047: if (tie(%hash,'GDBM_File',
6048: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
6049: &GDBM_READER(),0640)) {
6050: my $version=$hash{"version:$symb"};
6051: $returnhash{'version'}=$version;
6052: my $scope;
6053: for ($scope=1;$scope<=$version;$scope++) {
6054: my $vkeys=$hash{"$scope:keys:$symb"};
6055: my @keys=split(/:/,$vkeys);
6056: my $key;
6057: $returnhash{"$scope:keys"}=$vkeys;
6058: foreach $key (@keys) {
6059: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
6060: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
6061: }
6062: }
6063: if (!(untie(%hash))) {
6064: return "error:$!";
6065: }
6066: } else {
6067: return "error:$!";
6068: }
6069: return %returnhash;
6070: }
6071:
6072: # ----------------------------------------------------------------------- Store
6073:
6074: sub store {
6075: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
6076: my $home='';
6077:
6078: if ($stuname) { $home=&homeserver($stuname,$domain); }
6079:
6080: $symb=&symbclean($symb);
6081: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
6082:
6083: if (!$domain) { $domain=$env{'user.domain'}; }
6084: if (!$stuname) { $stuname=$env{'user.name'}; }
6085:
6086: &devalidate($symb,$stuname,$domain);
6087:
6088: $symb=escape($symb);
6089: if (!$namespace) {
6090: unless ($namespace=$env{'request.course.id'}) {
6091: return '';
6092: }
6093: }
6094: if (!$home) { $home=$env{'user.home'}; }
6095:
6096: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
6097: $$storehash{'host'}=$perlvar{'lonHostID'};
6098:
6099: my $namevalue='';
6100: foreach my $key (keys(%$storehash)) {
6101: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6102: }
6103: $namevalue=~s/\&$//;
6104: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
6105: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
6106: }
6107:
6108: # -------------------------------------------------------------- Critical Store
6109:
6110: sub cstore {
6111: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
6112: my $home='';
6113:
6114: if ($stuname) { $home=&homeserver($stuname,$domain); }
6115:
6116: $symb=&symbclean($symb);
6117: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
6118:
6119: if (!$domain) { $domain=$env{'user.domain'}; }
6120: if (!$stuname) { $stuname=$env{'user.name'}; }
6121:
6122: &devalidate($symb,$stuname,$domain);
6123:
6124: $symb=escape($symb);
6125: if (!$namespace) {
6126: unless ($namespace=$env{'request.course.id'}) {
6127: return '';
6128: }
6129: }
6130: if (!$home) { $home=$env{'user.home'}; }
6131:
6132: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
6133: $$storehash{'host'}=$perlvar{'lonHostID'};
6134:
6135: my $namevalue='';
6136: foreach my $key (keys(%$storehash)) {
6137: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6138: }
6139: $namevalue=~s/\&$//;
6140: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
6141: return critical
6142: ("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
6143: }
6144:
6145: # --------------------------------------------------------------------- Restore
6146:
6147: sub restore {
6148: my ($symb,$namespace,$domain,$stuname) = @_;
6149: my $home='';
6150:
6151: if ($stuname) { $home=&homeserver($stuname,$domain); }
6152:
6153: if (!$symb) {
6154: return if ($namespace eq 'courserequests');
6155: unless ($symb=escape(&symbread())) { return ''; }
6156: } else {
6157: unless ($namespace eq 'courserequests') {
6158: $symb=&escape(&symbclean($symb));
6159: }
6160: }
6161: if (!$namespace) {
6162: unless ($namespace=$env{'request.course.id'}) {
6163: return '';
6164: }
6165: }
6166: if (!$domain) { $domain=$env{'user.domain'}; }
6167: if (!$stuname) { $stuname=$env{'user.name'}; }
6168: if (!$home) { $home=$env{'user.home'}; }
6169: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
6170:
6171: my %returnhash=();
6172: foreach my $line (split(/\&/,$answer)) {
6173: my ($name,$value)=split(/\=/,$line);
6174: $returnhash{&unescape($name)}=&thaw_unescape($value);
6175: }
6176: my $version;
6177: for ($version=1;$version<=$returnhash{'version'};$version++) {
6178: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
6179: $returnhash{$item}=$returnhash{$version.':'.$item};
6180: }
6181: }
6182: return %returnhash;
6183: }
6184:
6185: # ---------------------------------------------------------- Course Description
6186: #
6187: #
6188:
6189: sub coursedescription {
6190: my ($courseid,$args)=@_;
6191: $courseid=~s/^\///;
6192: $courseid=~s/\_/\//g;
6193: my ($cdomain,$cnum)=split(/\//,$courseid);
6194: my $chome=&homeserver($cnum,$cdomain);
6195: my $normalid=$cdomain.'_'.$cnum;
6196: # need to always cache even if we get errors otherwise we keep
6197: # trying and trying and trying to get the course description.
6198: my %envhash=();
6199: my %returnhash=();
6200:
6201: my $expiretime=600;
6202: if ($env{'request.course.id'} eq $normalid) {
6203: $expiretime=120;
6204: }
6205:
6206: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
6207: if (!$args->{'freshen_cache'}
6208: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
6209: foreach my $key (keys(%env)) {
6210: next if ($key !~ /^\Q$prefix\E(.*)/);
6211: my ($setting) = $1;
6212: $returnhash{$setting} = $env{$key};
6213: }
6214: return %returnhash;
6215: }
6216:
6217: # get the data again
6218:
6219: if (!$args->{'one_time'}) {
6220: $envhash{'course.'.$normalid.'.last_cache'}=time;
6221: }
6222:
6223: if ($chome ne 'no_host') {
6224: %returnhash=&dump('environment',$cdomain,$cnum);
6225: if (!exists($returnhash{'con_lost'})) {
6226: my $username = $env{'user.name'}; # Defult username
6227: if(defined $args->{'user'}) {
6228: $username = $args->{'user'};
6229: }
6230: $returnhash{'home'}= $chome;
6231: $returnhash{'domain'} = $cdomain;
6232: $returnhash{'num'} = $cnum;
6233: if (!defined($returnhash{'type'})) {
6234: $returnhash{'type'} = 'Course';
6235: }
6236: while (my ($name,$value) = each %returnhash) {
6237: $envhash{'course.'.$normalid.'.'.$name}=$value;
6238: }
6239: $returnhash{'url'}=&clutter($returnhash{'url'});
6240: $returnhash{'fn'}=LONCAPA::tempdir() .
6241: $username.'_'.$cdomain.'_'.$cnum;
6242: $envhash{'course.'.$normalid.'.home'}=$chome;
6243: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
6244: $envhash{'course.'.$normalid.'.num'}=$cnum;
6245: }
6246: }
6247: if (!$args->{'one_time'}) {
6248: &appenv(\%envhash);
6249: }
6250: return %returnhash;
6251: }
6252:
6253: sub update_released_required {
6254: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
6255: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
6256: $cid = $env{'request.course.id'};
6257: $cdom = $env{'course.'.$cid.'.domain'};
6258: $cnum = $env{'course.'.$cid.'.num'};
6259: $chome = $env{'course.'.$cid.'.home'};
6260: }
6261: if ($needsrelease) {
6262: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
6263: my $needsupdate;
6264: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
6265: $needsupdate = 1;
6266: } else {
6267: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
6268: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
6269: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
6270: $needsupdate = 1;
6271: }
6272: }
6273: if ($needsupdate) {
6274: my %needshash = (
6275: 'internal.releaserequired' => $needsrelease,
6276: );
6277: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
6278: if ($putresult eq 'ok') {
6279: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
6280: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
6281: if (ref($crsinfo{$cid}) eq 'HASH') {
6282: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
6283: &courseidput($cdom,\%crsinfo,$chome,'notime');
6284: }
6285: }
6286: }
6287: }
6288: return;
6289: }
6290:
6291: # -------------------------------------------------See if a user is privileged
6292:
6293: sub privileged {
6294: my ($username,$domain,$possdomains,$possroles)=@_;
6295: my $now = time;
6296: my $roles;
6297: if (ref($possroles) eq 'ARRAY') {
6298: $roles = $possroles;
6299: } else {
6300: $roles = ['dc','su'];
6301: }
6302: if (ref($possdomains) eq 'ARRAY') {
6303: my %privileged = &privileged_by_domain($possdomains,$roles);
6304: foreach my $dom (@{$possdomains}) {
6305: if (($username =~ /^$match_username$/) && ($domain =~ /^$match_domain$/) &&
6306: (ref($privileged{$dom}) eq 'HASH')) {
6307: foreach my $role (@{$roles}) {
6308: if (ref($privileged{$dom}{$role}) eq 'HASH') {
6309: if (exists($privileged{$dom}{$role}{$username.':'.$domain})) {
6310: my ($end,$start) = split(/:/,$privileged{$dom}{$role}{$username.':'.$domain});
6311: return 1 unless (($end && $end < $now) ||
6312: ($start && $start > $now));
6313: }
6314: }
6315: }
6316: }
6317: }
6318: } else {
6319: my %rolesdump = &dump("roles", $domain, $username) or return 0;
6320: my $now = time;
6321:
6322: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys(%rolesdump)}) {
6323: my ($trole, $tend, $tstart) = split(/_/, $role);
6324: if (grep(/^\Q$trole\E$/,@{$roles})) {
6325: return 1 unless ($tend && $tend < $now)
6326: or ($tstart && $tstart > $now);
6327: }
6328: }
6329: }
6330: return 0;
6331: }
6332:
6333: sub privileged_by_domain {
6334: my ($domains,$roles) = @_;
6335: my %privileged = ();
6336: my $cachetime = 60*60*24;
6337: my $now = time;
6338: unless ((ref($domains) eq 'ARRAY') && (ref($roles) eq 'ARRAY')) {
6339: return %privileged;
6340: }
6341: foreach my $dom (@{$domains}) {
6342: next if (ref($privileged{$dom}) eq 'HASH');
6343: my $needroles;
6344: foreach my $role (@{$roles}) {
6345: my ($result,$cached)=&is_cached_new('priv_'.$role,$dom);
6346: if (defined($cached)) {
6347: if (ref($result) eq 'HASH') {
6348: $privileged{$dom}{$role} = $result;
6349: }
6350: } else {
6351: $needroles = 1;
6352: }
6353: }
6354: if ($needroles) {
6355: my %dompersonnel = &get_domain_roles($dom,$roles);
6356: $privileged{$dom} = {};
6357: foreach my $server (keys(%dompersonnel)) {
6358: if (ref($dompersonnel{$server}) eq 'HASH') {
6359: foreach my $item (keys(%{$dompersonnel{$server}})) {
6360: my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
6361: my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
6362: next if ($end && $end < $now);
6363: $privileged{$dom}{$trole}{$uname.':'.$udom} =
6364: $dompersonnel{$server}{$item};
6365: }
6366: }
6367: }
6368: if (ref($privileged{$dom}) eq 'HASH') {
6369: foreach my $role (@{$roles}) {
6370: if (ref($privileged{$dom}{$role}) eq 'HASH') {
6371: &do_cache_new('priv_'.$role,$dom,$privileged{$dom}{$role},$cachetime);
6372: } else {
6373: my %hash = ();
6374: &do_cache_new('priv_'.$role,$dom,\%hash,$cachetime);
6375: }
6376: }
6377: }
6378: }
6379: }
6380: return %privileged;
6381: }
6382:
6383: # -------------------------------------------------------- Get user privileges
6384:
6385: sub rolesinit {
6386: my ($domain, $username) = @_;
6387: my %userroles = ('user.login.time' => time);
6388: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
6389:
6390: # firstaccess and timerinterval are related to timed maps/resources.
6391: # also, blocking can be triggered by an activating timer
6392: # it's saved in the user's %env.
6393: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
6394: my %timerinterval = &dump('timerinterval', $domain, $username);
6395: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
6396: %timerintchk, %timerintenv);
6397:
6398: foreach my $key (keys(%firstaccess)) {
6399: my ($cid, $rest) = split(/\0/, $key);
6400: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
6401: }
6402:
6403: foreach my $key (keys(%timerinterval)) {
6404: my ($cid,$rest) = split(/\0/,$key);
6405: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
6406: }
6407:
6408: my %allroles=();
6409: my %allgroups=();
6410:
6411: for my $area (grep { ! /^rolesdef_/ } keys(%rolesdump)) {
6412: my $role = $rolesdump{$area};
6413: $area =~ s/\_\w\w$//;
6414:
6415: my ($trole, $tend, $tstart, $group_privs);
6416:
6417: if ($role =~ /^cr/) {
6418: # Custom role, defined by a user
6419: # e.g., user.role.cr/msu/smith/mynewrole
6420: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
6421: $trole = $1;
6422: ($tend, $tstart) = split('_', $2);
6423: } else {
6424: $trole = $role;
6425: }
6426: } elsif ($role =~ m|^gr/|) {
6427: # Role of member in a group, defined within a course/community
6428: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
6429: ($trole, $tend, $tstart) = split(/_/, $role);
6430: next if $tstart eq '-1';
6431: ($trole, $group_privs) = split(/\//, $trole);
6432: $group_privs = &unescape($group_privs);
6433: } else {
6434: # Just a normal role, defined in roles.tab
6435: ($trole, $tend, $tstart) = split(/_/,$role);
6436: }
6437:
6438: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
6439: $username);
6440: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
6441:
6442: # role expired or not available yet?
6443: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
6444: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
6445:
6446: next if $area eq '' or $trole eq '';
6447:
6448: my $spec = "$trole.$area";
6449: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
6450:
6451: if ($trole =~ /^cr\//) {
6452: # Custom role, defined by a user
6453: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
6454: } elsif ($trole eq 'gr') {
6455: # Role of a member in a group, defined within a course/community
6456: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
6457: next;
6458: } else {
6459: # Normal role, defined in roles.tab
6460: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
6461: }
6462:
6463: my $cid = $tdomain.'_'.$trest;
6464: unless ($firstaccchk{$cid}) {
6465: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
6466: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
6467: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
6468: $coursetimerstarts{$cid}{$item};
6469: }
6470: }
6471: $firstaccchk{$cid} = 1;
6472: }
6473: unless ($timerintchk{$cid}) {
6474: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
6475: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
6476: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
6477: $coursetimerintervals{$cid}{$item};
6478: }
6479: }
6480: $timerintchk{$cid} = 1;
6481: }
6482: }
6483:
6484: @userroles{'user.author','user.adv','user.rar'} = &set_userprivs(\%userroles,
6485: \%allroles, \%allgroups);
6486: $env{'user.adv'} = $userroles{'user.adv'};
6487: $env{'user.rar'} = $userroles{'user.rar'};
6488:
6489: return (\%userroles,\%firstaccenv,\%timerintenv);
6490: }
6491:
6492: sub set_arearole {
6493: my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
6494: unless ($nolog) {
6495: # log the associated role with the area
6496: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
6497: }
6498: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
6499: }
6500:
6501: sub custom_roleprivs {
6502: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
6503: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
6504: my $homsvr = &homeserver($rauthor,$rdomain);
6505: if (&hostname($homsvr) ne '') {
6506: my ($rdummy,$roledef)=
6507: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
6508: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
6509: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
6510: if (defined($syspriv)) {
6511: if ($trest =~ /^$match_community$/) {
6512: $syspriv =~ s/bre\&S//;
6513: }
6514: $$allroles{'cm./'}.=':'.$syspriv;
6515: $$allroles{$spec.'./'}.=':'.$syspriv;
6516: }
6517: if ($tdomain ne '') {
6518: if (defined($dompriv)) {
6519: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
6520: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
6521: }
6522: if (($trest ne '') && (defined($coursepriv))) {
6523: if ($trole =~ m{^cr/$tdomain/$tdomain\Q-domainconfig\E/([^/]+)$}) {
6524: my $rolename = $1;
6525: $coursepriv = &course_adhocrole_privs($rolename,$tdomain,$trest,$coursepriv);
6526: }
6527: $$allroles{'cm.'.$area}.=':'.$coursepriv;
6528: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
6529: }
6530: }
6531: }
6532: }
6533: }
6534:
6535: sub course_adhocrole_privs {
6536: my ($rolename,$cdom,$cnum,$coursepriv) = @_;
6537: my %overrides = &get('environment',["internal.adhocpriv.$rolename"],$cdom,$cnum);
6538: if ($overrides{"internal.adhocpriv.$rolename"}) {
6539: my (%currprivs,%storeprivs);
6540: foreach my $item (split(/:/,$coursepriv)) {
6541: my ($priv,$restrict) = split(/\&/,$item);
6542: $currprivs{$priv} = $restrict;
6543: }
6544: my (%possadd,%possremove,%full);
6545: foreach my $item (split(/\:/,$Apache::lonnet::pr{'cr:c'})) {
6546: my ($priv,$restrict)=split(/\&/,$item);
6547: $full{$priv} = $restrict;
6548: }
6549: foreach my $item (split(/,/,$overrides{"internal.adhocpriv.$rolename"})) {
6550: next if ($item eq '');
6551: my ($rule,$rest) = split(/=/,$item);
6552: next unless (($rule eq 'off') || ($rule eq 'on'));
6553: foreach my $priv (split(/:/,$rest)) {
6554: if ($priv ne '') {
6555: if ($rule eq 'off') {
6556: $possremove{$priv} = 1;
6557: } else {
6558: $possadd{$priv} = 1;
6559: }
6560: }
6561: }
6562: }
6563: foreach my $priv (sort(keys(%full))) {
6564: if (exists($currprivs{$priv})) {
6565: unless (exists($possremove{$priv})) {
6566: $storeprivs{$priv} = $currprivs{$priv};
6567: }
6568: } elsif (exists($possadd{$priv})) {
6569: $storeprivs{$priv} = $full{$priv};
6570: }
6571: }
6572: $coursepriv = ':'.join(':',map { $_.'&'.$storeprivs{$_}; } sort(keys(%storeprivs)));
6573: }
6574: return $coursepriv;
6575: }
6576:
6577: sub group_roleprivs {
6578: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
6579: my $access = 1;
6580: my $now = time;
6581: if (($tend!=0) && ($tend<$now)) { $access = 0; }
6582: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
6583: if ($access) {
6584: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
6585: $$allgroups{$course}{$group} .=':'.$group_privs;
6586: }
6587: }
6588:
6589: sub standard_roleprivs {
6590: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
6591: if (defined($pr{$trole.':s'})) {
6592: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
6593: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
6594: }
6595: if ($tdomain ne '') {
6596: if (defined($pr{$trole.':d'})) {
6597: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
6598: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
6599: }
6600: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
6601: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
6602: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
6603: }
6604: }
6605: }
6606:
6607: sub set_userprivs {
6608: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
6609: my $author=0;
6610: my $adv=0;
6611: my $rar=0;
6612: my %grouproles = ();
6613: if (keys(%{$allgroups}) > 0) {
6614: my @groupkeys;
6615: foreach my $role (keys(%{$allroles})) {
6616: push(@groupkeys,$role);
6617: }
6618: if (ref($groups_roles) eq 'HASH') {
6619: foreach my $key (keys(%{$groups_roles})) {
6620: unless (grep(/^\Q$key\E$/,@groupkeys)) {
6621: push(@groupkeys,$key);
6622: }
6623: }
6624: }
6625: if (@groupkeys > 0) {
6626: foreach my $role (@groupkeys) {
6627: my ($trole,$area,$sec,$extendedarea);
6628: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
6629: $trole = $1;
6630: $area = $2;
6631: $sec = $3;
6632: $extendedarea = $area.$sec;
6633: if (exists($$allgroups{$area})) {
6634: foreach my $group (keys(%{$$allgroups{$area}})) {
6635: my $spec = $trole.'.'.$extendedarea;
6636: $grouproles{$spec.'.'.$area.'/'.$group} =
6637: $$allgroups{$area}{$group};
6638: }
6639: }
6640: }
6641: }
6642: }
6643: }
6644: foreach my $group (keys(%grouproles)) {
6645: $$allroles{$group} = $grouproles{$group};
6646: }
6647: foreach my $role (keys(%{$allroles})) {
6648: my %thesepriv;
6649: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
6650: foreach my $item (split(/:/,$$allroles{$role})) {
6651: if ($item ne '') {
6652: my ($privilege,$restrictions)=split(/&/,$item);
6653: if ($restrictions eq '') {
6654: $thesepriv{$privilege}='F';
6655: } elsif ($thesepriv{$privilege} ne 'F') {
6656: $thesepriv{$privilege}.=$restrictions;
6657: }
6658: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
6659: if ($thesepriv{'rar'} eq 'F') { $rar=1; }
6660: }
6661: }
6662: my $thesestr='';
6663: foreach my $priv (sort(keys(%thesepriv))) {
6664: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
6665: }
6666: $userroles->{'user.priv.'.$role} = $thesestr;
6667: }
6668: return ($author,$adv,$rar);
6669: }
6670:
6671: sub role_status {
6672: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
6673: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
6674: my ($one,$two) = split(m{\./},$rolekey,2);
6675: (undef,undef,$$role) = split(/\./,$one,3);
6676: unless (!defined($$role) || $$role eq '') {
6677: $$where = '/'.$two;
6678: $$trolecode=$$role.'.'.$$where;
6679: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
6680: $$tstatus='is';
6681: if ($$tstart && $$tstart>$update) {
6682: $$tstatus='future';
6683: if ($$tstart<$now) {
6684: if ($$tstart && $$tstart>$refresh) {
6685: if (($$where ne '') && ($$role ne '')) {
6686: my (%allroles,%allgroups,$group_privs,
6687: %groups_roles,@rolecodes);
6688: my %userroles = (
6689: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
6690: );
6691: @rolecodes = ('cm');
6692: my $spec=$$role.'.'.$$where;
6693: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
6694: if ($$role =~ /^cr\//) {
6695: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
6696: push(@rolecodes,'cr');
6697: } elsif ($$role eq 'gr') {
6698: push(@rolecodes,$$role);
6699: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
6700: $env{'user.name'});
6701: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
6702: (undef,my $group_privs) = split(/\//,$trole);
6703: $group_privs = &unescape($group_privs);
6704: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
6705: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
6706: &get_groups_roles($tdomain,$trest,
6707: \%course_roles,\@rolecodes,
6708: \%groups_roles);
6709: } else {
6710: push(@rolecodes,$$role);
6711: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
6712: }
6713: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%allroles,\%allgroups,
6714: \%groups_roles);
6715: &appenv(\%userroles,\@rolecodes);
6716: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
6717: }
6718: }
6719: $$tstatus = 'is';
6720: }
6721: }
6722: if ($$tend) {
6723: if ($$tend<$update) {
6724: $$tstatus='expired';
6725: } elsif ($$tend<$now) {
6726: $$tstatus='will_not';
6727: }
6728: }
6729: }
6730: }
6731: }
6732:
6733: sub get_groups_roles {
6734: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
6735: return unless((ref($cdom_courseroles) eq 'HASH') &&
6736: (ref($rolecodes) eq 'ARRAY') &&
6737: (ref($groups_roles) eq 'HASH'));
6738: if (keys(%{$cdom_courseroles}) > 0) {
6739: my ($cnum) = ($rest =~ /^($match_courseid)/);
6740: if ($cdom ne '' && $cnum ne '') {
6741: foreach my $key (keys(%{$cdom_courseroles})) {
6742: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
6743: my $crsrole = $1;
6744: my $crssec = $2;
6745: if ($crsrole =~ /^cr/) {
6746: unless (grep(/^cr$/,@{$rolecodes})) {
6747: push(@{$rolecodes},'cr');
6748: }
6749: } else {
6750: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
6751: push(@{$rolecodes},$crsrole);
6752: }
6753: }
6754: my $rolekey = "$crsrole./$cdom/$cnum";
6755: if ($crssec ne '') {
6756: $rolekey .= "/$crssec";
6757: }
6758: $rolekey .= './';
6759: $groups_roles->{$rolekey} = $rolecodes;
6760: }
6761: }
6762: }
6763: }
6764: return;
6765: }
6766:
6767: sub delete_env_groupprivs {
6768: my ($where,$courseroles,$possroles) = @_;
6769: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
6770: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
6771: unless (ref($courseroles->{$udom}) eq 'HASH') {
6772: %{$courseroles->{$udom}} =
6773: &get_my_roles('','','userroles',['active'],
6774: $possroles,[$udom],1);
6775: }
6776: if (ref($courseroles->{$udom}) eq 'HASH') {
6777: foreach my $item (keys(%{$courseroles->{$udom}})) {
6778: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
6779: my $area = '/'.$cdom.'/'.$cnum;
6780: my $privkey = "user.priv.$crsrole.$area";
6781: if ($crssec ne '') {
6782: $privkey .= '/'.$crssec;
6783: }
6784: $privkey .= ".$area/$group";
6785: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
6786: }
6787: }
6788: return;
6789: }
6790:
6791: sub check_adhoc_privs {
6792: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller,$sec) = @_;
6793: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
6794: if ($sec) {
6795: $cckey .= '/'.$sec;
6796: }
6797: my $setprivs;
6798: if ($env{$cckey}) {
6799: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
6800: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
6801: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
6802: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
6803: $setprivs = 1;
6804: }
6805: } else {
6806: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
6807: $setprivs = 1;
6808: }
6809: return $setprivs;
6810: }
6811:
6812: sub set_adhoc_privileges {
6813: # role can be cc, ca, or cr/<dom>/<dom>-domainconfig/role
6814: my ($dcdom,$pickedcourse,$role,$caller,$sec) = @_;
6815: my $area = '/'.$dcdom.'/'.$pickedcourse;
6816: if ($sec ne '') {
6817: $area .= '/'.$sec;
6818: }
6819: my $spec = $role.'.'.$area;
6820: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
6821: $env{'user.name'},1);
6822: my %rolehash = ();
6823: if ($role =~ m{^\Qcr/$dcdom/$dcdom\E\-domainconfig/(\w+)$}) {
6824: my $rolename = $1;
6825: &custom_roleprivs(\%rolehash,$role,$dcdom,$pickedcourse,$spec,$area);
6826: my %domdef = &get_domain_defaults($dcdom);
6827: if (ref($domdef{'adhocroles'}) eq 'HASH') {
6828: if (ref($domdef{'adhocroles'}{$rolename}) eq 'HASH') {
6829: &appenv({'request.role.desc' => $domdef{'adhocroles'}{$rolename}{'desc'},});
6830: }
6831: }
6832: } else {
6833: &standard_roleprivs(\%rolehash,$role,$dcdom,$spec,$pickedcourse,$area);
6834: }
6835: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%rolehash);
6836: &appenv(\%userroles,[$role,'cm']);
6837: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
6838: unless (($caller eq 'constructaccess' && $env{'request.course.id'}) ||
6839: ($caller eq 'tiny')) {
6840: &appenv( {'request.role' => $spec,
6841: 'request.role.domain' => $dcdom,
6842: 'request.course.sec' => $sec,
6843: }
6844: );
6845: my $tadv=0;
6846: if (&allowed('adv') eq 'F') { $tadv=1; }
6847: &appenv({'request.role.adv' => $tadv});
6848: }
6849: }
6850:
6851: # --------------------------------------------------------------- get interface
6852:
6853: sub get {
6854: my ($namespace,$storearr,$udomain,$uname)=@_;
6855: my $items='';
6856: foreach my $item (@$storearr) {
6857: $items.=&escape($item).'&';
6858: }
6859: $items=~s/\&$//;
6860: if (!$udomain) { $udomain=$env{'user.domain'}; }
6861: if (!$uname) { $uname=$env{'user.name'}; }
6862: my $uhome=&homeserver($uname,$udomain);
6863:
6864: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
6865: my @pairs=split(/\&/,$rep);
6866: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
6867: return @pairs;
6868: }
6869: my %returnhash=();
6870: my $i=0;
6871: foreach my $item (@$storearr) {
6872: $returnhash{$item}=&thaw_unescape($pairs[$i]);
6873: $i++;
6874: }
6875: return %returnhash;
6876: }
6877:
6878: # --------------------------------------------------------------- del interface
6879:
6880: sub del {
6881: my ($namespace,$storearr,$udomain,$uname)=@_;
6882: my $items='';
6883: foreach my $item (@$storearr) {
6884: $items.=&escape($item).'&';
6885: }
6886:
6887: $items=~s/\&$//;
6888: if (!$udomain) { $udomain=$env{'user.domain'}; }
6889: if (!$uname) { $uname=$env{'user.name'}; }
6890: my $uhome=&homeserver($uname,$udomain);
6891: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
6892: }
6893:
6894: # -------------------------------------------------------------- dump interface
6895:
6896: sub unserialize {
6897: my ($rep, $escapedkeys) = @_;
6898:
6899: return {} if $rep =~ /^error/;
6900:
6901: my %returnhash=();
6902: foreach my $item (split(/\&/,$rep)) {
6903: my ($key, $value) = split(/=/, $item, 2);
6904: $key = unescape($key) unless $escapedkeys;
6905: next if $key =~ /^error: 2 /;
6906: $returnhash{$key} = &thaw_unescape($value);
6907: }
6908: #return %returnhash;
6909: return \%returnhash;
6910: }
6911:
6912: # see Lond::dump_with_regexp
6913: # if $escapedkeys hash keys won't get unescaped.
6914: sub dump {
6915: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
6916: if (!$udomain) { $udomain=$env{'user.domain'}; }
6917: if (!$uname) { $uname=$env{'user.name'}; }
6918: my $uhome=&homeserver($uname,$udomain);
6919:
6920: if ($regexp) {
6921: $regexp=&escape($regexp);
6922: } else {
6923: $regexp='.';
6924: }
6925: if (grep { $_ eq $uhome } current_machine_ids()) {
6926: # user is hosted on this machine
6927: my $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
6928: $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
6929: return %{unserialize($reply, $escapedkeys)};
6930: }
6931: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
6932: my @pairs=split(/\&/,$rep);
6933: my %returnhash=();
6934: if (!($rep =~ /^error/ )) {
6935: foreach my $item (@pairs) {
6936: my ($key,$value)=split(/=/,$item,2);
6937: $key = unescape($key) unless $escapedkeys;
6938: #$key = &unescape($key);
6939: next if ($key =~ /^error: 2 /);
6940: $returnhash{$key}=&thaw_unescape($value);
6941: }
6942: }
6943: return %returnhash;
6944: }
6945:
6946:
6947: # --------------------------------------------------------- dumpstore interface
6948:
6949: sub dumpstore {
6950: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
6951: # same as dump but keys must be escaped. They may contain colon separated
6952: # lists of values that may themself contain colons (e.g. symbs).
6953: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
6954: }
6955:
6956: # -------------------------------------------------------------- keys interface
6957:
6958: sub getkeys {
6959: my ($namespace,$udomain,$uname)=@_;
6960: if (!$udomain) { $udomain=$env{'user.domain'}; }
6961: if (!$uname) { $uname=$env{'user.name'}; }
6962: my $uhome=&homeserver($uname,$udomain);
6963: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
6964: my @keyarray=();
6965: foreach my $key (split(/\&/,$rep)) {
6966: next if ($key =~ /^error: 2 /);
6967: push(@keyarray,&unescape($key));
6968: }
6969: return @keyarray;
6970: }
6971:
6972: # --------------------------------------------------------------- currentdump
6973: sub currentdump {
6974: my ($courseid,$sdom,$sname)=@_;
6975: $courseid = $env{'request.course.id'} if (! defined($courseid));
6976: $sdom = $env{'user.domain'} if (! defined($sdom));
6977: $sname = $env{'user.name'} if (! defined($sname));
6978: my $uhome = &homeserver($sname,$sdom);
6979: my $rep;
6980:
6981: if (grep { $_ eq $uhome } current_machine_ids()) {
6982: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
6983: $courseid)));
6984: } else {
6985: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
6986: }
6987:
6988: return if ($rep =~ /^(error:|no_such_host)/);
6989: #
6990: my %returnhash=();
6991: #
6992: if ($rep eq 'unknown_cmd') {
6993: # an old lond will not know currentdump
6994: # Do a dump and make it look like a currentdump
6995: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
6996: return if ($tmp[0] =~ /^(error:|no_such_host)/);
6997: my %hash = @tmp;
6998: @tmp=();
6999: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
7000: } else {
7001: my @pairs=split(/\&/,$rep);
7002: foreach my $pair (@pairs) {
7003: my ($key,$value)=split(/=/,$pair,2);
7004: my ($symb,$param) = split(/:/,$key);
7005: $returnhash{&unescape($symb)}->{&unescape($param)} =
7006: &thaw_unescape($value);
7007: }
7008: }
7009: return %returnhash;
7010: }
7011:
7012: sub convert_dump_to_currentdump{
7013: my %hash = %{shift()};
7014: my %returnhash;
7015: # Code ripped from lond, essentially. The only difference
7016: # here is the unescaping done by lonnet::dump(). Conceivably
7017: # we might run in to problems with parameter names =~ /^v\./
7018: while (my ($key,$value) = each(%hash)) {
7019: my ($v,$symb,$param) = split(/:/,$key);
7020: $symb = &unescape($symb);
7021: $param = &unescape($param);
7022: next if ($v eq 'version' || $symb eq 'keys');
7023: next if (exists($returnhash{$symb}) &&
7024: exists($returnhash{$symb}->{$param}) &&
7025: $returnhash{$symb}->{'v.'.$param} > $v);
7026: $returnhash{$symb}->{$param}=$value;
7027: $returnhash{$symb}->{'v.'.$param}=$v;
7028: }
7029: #
7030: # Remove all of the keys in the hashes which keep track of
7031: # the version of the parameter.
7032: while (my ($symb,$param_hash) = each(%returnhash)) {
7033: # use a foreach because we are going to delete from the hash.
7034: foreach my $key (keys(%$param_hash)) {
7035: delete($param_hash->{$key}) if ($key =~ /^v\./);
7036: }
7037: }
7038: return \%returnhash;
7039: }
7040:
7041: # ------------------------------------------------------ critical inc interface
7042:
7043: sub cinc {
7044: return &inc(@_,'critical');
7045: }
7046:
7047: # --------------------------------------------------------------- inc interface
7048:
7049: sub inc {
7050: my ($namespace,$store,$udomain,$uname,$critical) = @_;
7051: if (!$udomain) { $udomain=$env{'user.domain'}; }
7052: if (!$uname) { $uname=$env{'user.name'}; }
7053: my $uhome=&homeserver($uname,$udomain);
7054: my $items='';
7055: if (! ref($store)) {
7056: # got a single value, so use that instead
7057: $items = &escape($store).'=&';
7058: } elsif (ref($store) eq 'SCALAR') {
7059: $items = &escape($$store).'=&';
7060: } elsif (ref($store) eq 'ARRAY') {
7061: $items = join('=&',map {&escape($_);} @{$store});
7062: } elsif (ref($store) eq 'HASH') {
7063: while (my($key,$value) = each(%{$store})) {
7064: $items.= &escape($key).'='.&escape($value).'&';
7065: }
7066: }
7067: $items=~s/\&$//;
7068: if ($critical) {
7069: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
7070: } else {
7071: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
7072: }
7073: }
7074:
7075: # --------------------------------------------------------------- put interface
7076:
7077: sub put {
7078: my ($namespace,$storehash,$udomain,$uname)=@_;
7079: if (!$udomain) { $udomain=$env{'user.domain'}; }
7080: if (!$uname) { $uname=$env{'user.name'}; }
7081: my $uhome=&homeserver($uname,$udomain);
7082: my $items='';
7083: foreach my $item (keys(%$storehash)) {
7084: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
7085: }
7086: $items=~s/\&$//;
7087: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
7088: }
7089:
7090: # ------------------------------------------------------------ newput interface
7091:
7092: sub newput {
7093: my ($namespace,$storehash,$udomain,$uname)=@_;
7094: if (!$udomain) { $udomain=$env{'user.domain'}; }
7095: if (!$uname) { $uname=$env{'user.name'}; }
7096: my $uhome=&homeserver($uname,$udomain);
7097: my $items='';
7098: foreach my $key (keys(%$storehash)) {
7099: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
7100: }
7101: $items=~s/\&$//;
7102: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
7103: }
7104:
7105: # --------------------------------------------------------- putstore interface
7106:
7107: sub putstore {
7108: my ($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog)=@_;
7109: if (!$udomain) { $udomain=$env{'user.domain'}; }
7110: if (!$uname) { $uname=$env{'user.name'}; }
7111: my $uhome=&homeserver($uname,$udomain);
7112: my $items='';
7113: foreach my $key (keys(%$storehash)) {
7114: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
7115: }
7116: $items=~s/\&$//;
7117: my $esc_symb=&escape($symb);
7118: my $esc_v=&escape($version);
7119: my $reply =
7120: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
7121: $uhome);
7122: if (($tolog) && ($reply eq 'ok')) {
7123: my $namevalue='';
7124: foreach my $key (keys(%{$storehash})) {
7125: $namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&';
7126: }
7127: $namevalue .= 'ip='.&escape($ENV{'REMOTE_ADDR'}).
7128: '&host='.&escape($perlvar{'lonHostID'}).
7129: '&version='.$esc_v.
7130: '&by='.&escape($env{'user.name'}.':'.$env{'user.domain'});
7131: &Apache::lonnet::courselog($symb.':'.$uname.':'.$udomain.':PUTSTORE:'.$namevalue);
7132: }
7133: if ($reply eq 'unknown_cmd') {
7134: # gfall back to way things use to be done
7135: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
7136: $uname);
7137: }
7138: return $reply;
7139: }
7140:
7141: sub old_putstore {
7142: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
7143: if (!$udomain) { $udomain=$env{'user.domain'}; }
7144: if (!$uname) { $uname=$env{'user.name'}; }
7145: my $uhome=&homeserver($uname,$udomain);
7146: my %newstorehash;
7147: foreach my $item (keys(%$storehash)) {
7148: my $key = $version.':'.&escape($symb).':'.$item;
7149: $newstorehash{$key} = $storehash->{$item};
7150: }
7151: my $items='';
7152: my %allitems = ();
7153: foreach my $item (keys(%newstorehash)) {
7154: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
7155: my $key = $1.':keys:'.$2;
7156: $allitems{$key} .= $3.':';
7157: }
7158: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
7159: }
7160: foreach my $item (keys(%allitems)) {
7161: $allitems{$item} =~ s/\:$//;
7162: $items.= $item.'='.$allitems{$item}.'&';
7163: }
7164: $items=~s/\&$//;
7165: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
7166: }
7167:
7168: # ------------------------------------------------------ critical put interface
7169:
7170: sub cput {
7171: my ($namespace,$storehash,$udomain,$uname)=@_;
7172: if (!$udomain) { $udomain=$env{'user.domain'}; }
7173: if (!$uname) { $uname=$env{'user.name'}; }
7174: my $uhome=&homeserver($uname,$udomain);
7175: my $items='';
7176: foreach my $item (keys(%$storehash)) {
7177: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
7178: }
7179: $items=~s/\&$//;
7180: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
7181: }
7182:
7183: # -------------------------------------------------------------- eget interface
7184:
7185: sub eget {
7186: my ($namespace,$storearr,$udomain,$uname)=@_;
7187: my $items='';
7188: foreach my $item (@$storearr) {
7189: $items.=&escape($item).'&';
7190: }
7191: $items=~s/\&$//;
7192: if (!$udomain) { $udomain=$env{'user.domain'}; }
7193: if (!$uname) { $uname=$env{'user.name'}; }
7194: my $uhome=&homeserver($uname,$udomain);
7195: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
7196: my @pairs=split(/\&/,$rep);
7197: my %returnhash=();
7198: my $i=0;
7199: foreach my $item (@$storearr) {
7200: $returnhash{$item}=&thaw_unescape($pairs[$i]);
7201: $i++;
7202: }
7203: return %returnhash;
7204: }
7205:
7206: # ------------------------------------------------------------ tmpput interface
7207: sub tmpput {
7208: my ($storehash,$server,$context)=@_;
7209: my $items='';
7210: foreach my $item (keys(%$storehash)) {
7211: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
7212: }
7213: $items=~s/\&$//;
7214: if (defined($context)) {
7215: $items .= ':'.&escape($context);
7216: }
7217: return &reply("tmpput:$items",$server);
7218: }
7219:
7220: # ------------------------------------------------------------ tmpget interface
7221: sub tmpget {
7222: my ($token,$server)=@_;
7223: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
7224: my $rep=&reply("tmpget:$token",$server);
7225: my %returnhash;
7226: if ($rep =~ /^(con_lost|error|no_such_host)/i) {
7227: return %returnhash;
7228: }
7229: foreach my $item (split(/\&/,$rep)) {
7230: my ($key,$value)=split(/=/,$item);
7231: $returnhash{&unescape($key)}=&thaw_unescape($value);
7232: }
7233: return %returnhash;
7234: }
7235:
7236: # ------------------------------------------------------------ tmpdel interface
7237: sub tmpdel {
7238: my ($token,$server)=@_;
7239: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
7240: return &reply("tmpdel:$token",$server);
7241: }
7242:
7243: # ------------------------------------------------------------ get_timebased_id
7244:
7245: sub get_timebased_id {
7246: my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
7247: $maxtries) = @_;
7248: my ($newid,$error,$dellock);
7249: unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
7250: return ('','ok','invalid call to get suffix');
7251: }
7252:
7253: # set defaults for any optional args for which values were not supplied
7254: if ($who eq '') {
7255: $who = $env{'user.name'}.':'.$env{'user.domain'};
7256: }
7257: if (!$locktries) {
7258: $locktries = 3;
7259: }
7260: if (!$maxtries) {
7261: $maxtries = 10;
7262: }
7263:
7264: if (($cdom eq '') || ($cnum eq '')) {
7265: if ($env{'request.course.id'}) {
7266: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7267: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7268: }
7269: if (($cdom eq '') || ($cnum eq '')) {
7270: return ('','ok','call to get suffix not in course context');
7271: }
7272: }
7273:
7274: # construct locking item
7275: my $lockhash = {
7276: $prefix."\0".'locked_'.$keyid => $who,
7277: };
7278: my $tries = 0;
7279:
7280: # attempt to get lock on nohist_$namespace file
7281: my $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
7282: while (($gotlock ne 'ok') && $tries <$locktries) {
7283: $tries ++;
7284: sleep 1;
7285: $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
7286: }
7287:
7288: # attempt to get unique identifier, based on current timestamp
7289: if ($gotlock eq 'ok') {
7290: my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
7291: my $id = time;
7292: $newid = $id;
7293: if ($idtype eq 'addcode') {
7294: $newid .= &sixnum_code();
7295: }
7296: my $idtries = 0;
7297: while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
7298: if ($idtype eq 'concat') {
7299: $newid = $id.$idtries;
7300: } elsif ($idtype eq 'addcode') {
7301: $newid = $newid.&sixnum_code();
7302: } else {
7303: $newid ++;
7304: }
7305: $idtries ++;
7306: }
7307: if (!exists($inuse{$prefix."\0".$newid})) {
7308: my %new_item = (
7309: $prefix."\0".$newid => $who,
7310: );
7311: my $putresult = &Apache::lonnet::put('nohist_'.$namespace,\%new_item,
7312: $cdom,$cnum);
7313: if ($putresult ne 'ok') {
7314: undef($newid);
7315: $error = 'error saving new item: '.$putresult;
7316: }
7317: } else {
7318: undef($newid);
7319: $error = ('error: no unique suffix available for the new item ');
7320: }
7321: # remove lock
7322: my @del_lock = ($prefix."\0".'locked_'.$keyid);
7323: $dellock = &Apache::lonnet::del('nohist_'.$namespace,\@del_lock,$cdom,$cnum);
7324: } else {
7325: $error = "error: could not obtain lockfile\n";
7326: $dellock = 'ok';
7327: if (($prefix eq 'paste') && ($namespace eq 'courseeditor') && ($keyid eq 'num')) {
7328: $dellock = 'nolock';
7329: }
7330: }
7331: return ($newid,$dellock,$error);
7332: }
7333:
7334: sub sixnum_code {
7335: my $code;
7336: for (0..6) {
7337: $code .= int( rand(9) );
7338: }
7339: return $code;
7340: }
7341:
7342: # -------------------------------------------------- portfolio access checking
7343:
7344: sub portfolio_access {
7345: my ($requrl,$clientip) = @_;
7346: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
7347: my $result = &get_portfolio_access($udom,$unum,$file_name,$group,$clientip);
7348: if ($result) {
7349: my %setters;
7350: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
7351: my ($startblock,$endblock) =
7352: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
7353: if ($startblock && $endblock) {
7354: return 'B';
7355: }
7356: } else {
7357: my ($startblock,$endblock) =
7358: &Apache::loncommon::blockcheck(\%setters,'port');
7359: if ($startblock && $endblock) {
7360: return 'B';
7361: }
7362: }
7363: }
7364: if ($result eq 'ok') {
7365: return 'F';
7366: } elsif ($result =~ /^[^:]+:guest_/) {
7367: return 'A';
7368: }
7369: return '';
7370: }
7371:
7372: sub get_portfolio_access {
7373: my ($udom,$unum,$file_name,$group,$clientip,$access_hash) = @_;
7374:
7375: if (!ref($access_hash)) {
7376: my $current_perms = &get_portfile_permissions($udom,$unum);
7377: my %access_controls = &get_access_controls($current_perms,$group,
7378: $file_name);
7379: $access_hash = $access_controls{$file_name};
7380: }
7381:
7382: my ($public,$guest,@domains,@users,@courses,@groups,@ips);
7383: my $now = time;
7384: if (ref($access_hash) eq 'HASH') {
7385: foreach my $key (keys(%{$access_hash})) {
7386: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
7387: if ($start > $now) {
7388: next;
7389: }
7390: if ($end && $end<$now) {
7391: next;
7392: }
7393: if ($scope eq 'public') {
7394: $public = $key;
7395: last;
7396: } elsif ($scope eq 'guest') {
7397: $guest = $key;
7398: } elsif ($scope eq 'domains') {
7399: push(@domains,$key);
7400: } elsif ($scope eq 'users') {
7401: push(@users,$key);
7402: } elsif ($scope eq 'course') {
7403: push(@courses,$key);
7404: } elsif ($scope eq 'group') {
7405: push(@groups,$key);
7406: } elsif ($scope eq 'ip') {
7407: push(@ips,$key);
7408: }
7409: }
7410: if ($public) {
7411: return 'ok';
7412: } elsif (@ips > 0) {
7413: my $allowed;
7414: foreach my $ipkey (@ips) {
7415: if (ref($access_hash->{$ipkey}{'ip'}) eq 'ARRAY') {
7416: if (&Apache::loncommon::check_ip_acc(join(',',@{$access_hash->{$ipkey}{'ip'}}),$clientip)) {
7417: $allowed = 1;
7418: last;
7419: }
7420: }
7421: }
7422: if ($allowed) {
7423: return 'ok';
7424: }
7425: }
7426: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
7427: if ($guest) {
7428: return $guest;
7429: }
7430: } else {
7431: if (@domains > 0) {
7432: foreach my $domkey (@domains) {
7433: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
7434: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
7435: return 'ok';
7436: }
7437: }
7438: }
7439: }
7440: if (@users > 0) {
7441: foreach my $userkey (@users) {
7442: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
7443: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
7444: if (ref($item) eq 'HASH') {
7445: if (($item->{'uname'} eq $env{'user.name'}) &&
7446: ($item->{'udom'} eq $env{'user.domain'})) {
7447: return 'ok';
7448: }
7449: }
7450: }
7451: }
7452: }
7453: }
7454: my %roleshash;
7455: my @courses_and_groups = @courses;
7456: push(@courses_and_groups,@groups);
7457: if (@courses_and_groups > 0) {
7458: my (%allgroups,%allroles);
7459: my ($start,$end,$role,$sec,$group);
7460: foreach my $envkey (%env) {
7461: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
7462: my $cid = $2.'_'.$3;
7463: if ($1 eq 'gr') {
7464: $group = $4;
7465: $allgroups{$cid}{$group} = $env{$envkey};
7466: } else {
7467: if ($4 eq '') {
7468: $sec = 'none';
7469: } else {
7470: $sec = $4;
7471: }
7472: $allroles{$cid}{$1}{$sec} = $env{$envkey};
7473: }
7474: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
7475: my $cid = $2.'_'.$3;
7476: if ($4 eq '') {
7477: $sec = 'none';
7478: } else {
7479: $sec = $4;
7480: }
7481: $allroles{$cid}{$1}{$sec} = $env{$envkey};
7482: }
7483: }
7484: if (keys(%allroles) == 0) {
7485: return;
7486: }
7487: foreach my $key (@courses_and_groups) {
7488: my %content = %{$$access_hash{$key}};
7489: my $cnum = $content{'number'};
7490: my $cdom = $content{'domain'};
7491: my $cid = $cdom.'_'.$cnum;
7492: if (!exists($allroles{$cid})) {
7493: next;
7494: }
7495: foreach my $role_id (keys(%{$content{'roles'}})) {
7496: my @sections = @{$content{'roles'}{$role_id}{'section'}};
7497: my @groups = @{$content{'roles'}{$role_id}{'group'}};
7498: my @status = @{$content{'roles'}{$role_id}{'access'}};
7499: my @roles = @{$content{'roles'}{$role_id}{'role'}};
7500: foreach my $role (keys(%{$allroles{$cid}})) {
7501: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
7502: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
7503: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
7504: if (grep/^all$/,@sections) {
7505: return 'ok';
7506: } else {
7507: if (grep/^$sec$/,@sections) {
7508: return 'ok';
7509: }
7510: }
7511: }
7512: }
7513: if (keys(%{$allgroups{$cid}}) == 0) {
7514: if (grep/^none$/,@groups) {
7515: return 'ok';
7516: }
7517: } else {
7518: if (grep/^all$/,@groups) {
7519: return 'ok';
7520: }
7521: foreach my $group (keys(%{$allgroups{$cid}})) {
7522: if (grep/^$group$/,@groups) {
7523: return 'ok';
7524: }
7525: }
7526: }
7527: }
7528: }
7529: }
7530: }
7531: }
7532: if ($guest) {
7533: return $guest;
7534: }
7535: }
7536: }
7537: return;
7538: }
7539:
7540: sub course_group_datechecker {
7541: my ($dates,$now,$status) = @_;
7542: my ($start,$end) = split(/\./,$dates);
7543: if (!$start && !$end) {
7544: return 'ok';
7545: }
7546: if (grep/^active$/,@{$status}) {
7547: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
7548: return 'ok';
7549: }
7550: }
7551: if (grep/^previous$/,@{$status}) {
7552: if ($end > $now ) {
7553: return 'ok';
7554: }
7555: }
7556: if (grep/^future$/,@{$status}) {
7557: if ($start > $now) {
7558: return 'ok';
7559: }
7560: }
7561: return;
7562: }
7563:
7564: sub parse_portfolio_url {
7565: my ($url) = @_;
7566:
7567: my ($type,$udom,$unum,$group,$file_name);
7568:
7569: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
7570: $type = 1;
7571: $udom = $1;
7572: $unum = $2;
7573: $file_name = $3;
7574: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
7575: $type = 2;
7576: $udom = $1;
7577: $unum = $2;
7578: $group = $3;
7579: $file_name = $3.'/'.$4;
7580: }
7581: if (wantarray) {
7582: return ($type,$udom,$unum,$file_name,$group);
7583: }
7584: return $type;
7585: }
7586:
7587: sub is_portfolio_url {
7588: my ($url) = @_;
7589: return scalar(&parse_portfolio_url($url));
7590: }
7591:
7592: sub is_portfolio_file {
7593: my ($file) = @_;
7594: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
7595: return 1;
7596: }
7597: return;
7598: }
7599:
7600: sub usertools_access {
7601: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
7602: my ($access,%tools);
7603: if ($context eq '') {
7604: $context = 'tools';
7605: }
7606: if ($context eq 'requestcourses') {
7607: %tools = (
7608: official => 1,
7609: unofficial => 1,
7610: community => 1,
7611: textbook => 1,
7612: placement => 1,
7613: lti => 1,
7614: );
7615: } elsif ($context eq 'requestauthor') {
7616: %tools = (
7617: requestauthor => 1,
7618: );
7619: } else {
7620: %tools = (
7621: aboutme => 1,
7622: blog => 1,
7623: webdav => 1,
7624: portfolio => 1,
7625: );
7626: }
7627: return if (!defined($tools{$tool}));
7628:
7629: if (($udom eq '') || ($uname eq '')) {
7630: $udom = $env{'user.domain'};
7631: $uname = $env{'user.name'};
7632: }
7633:
7634: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7635: if ($action ne 'reload') {
7636: if ($context eq 'requestcourses') {
7637: return $env{'environment.canrequest.'.$tool};
7638: } elsif ($context eq 'requestauthor') {
7639: return $env{'environment.canrequest.author'};
7640: } else {
7641: return $env{'environment.availabletools.'.$tool};
7642: }
7643: }
7644: }
7645:
7646: my ($toolstatus,$inststatus,$envkey);
7647: if ($context eq 'requestauthor') {
7648: $envkey = $context;
7649: } else {
7650: $envkey = $context.'.'.$tool;
7651: }
7652:
7653: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
7654: ($action ne 'reload')) {
7655: $toolstatus = $env{'environment.'.$envkey};
7656: $inststatus = $env{'environment.inststatus'};
7657: } else {
7658: if (ref($userenvref) eq 'HASH') {
7659: $toolstatus = $userenvref->{$envkey};
7660: $inststatus = $userenvref->{'inststatus'};
7661: } else {
7662: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
7663: $toolstatus = $userenv{$envkey};
7664: $inststatus = $userenv{'inststatus'};
7665: }
7666: }
7667:
7668: if ($toolstatus ne '') {
7669: if ($toolstatus) {
7670: $access = 1;
7671: } else {
7672: $access = 0;
7673: }
7674: return $access;
7675: }
7676:
7677: my ($is_adv,%domdef);
7678: if (ref($is_advref) eq 'HASH') {
7679: $is_adv = $is_advref->{'is_adv'};
7680: } else {
7681: $is_adv = &is_advanced_user($udom,$uname);
7682: }
7683: if (ref($domdefref) eq 'HASH') {
7684: %domdef = %{$domdefref};
7685: } else {
7686: %domdef = &get_domain_defaults($udom);
7687: }
7688: if (ref($domdef{$tool}) eq 'HASH') {
7689: if ($is_adv) {
7690: if ($domdef{$tool}{'_LC_adv'} ne '') {
7691: if ($domdef{$tool}{'_LC_adv'}) {
7692: $access = 1;
7693: } else {
7694: $access = 0;
7695: }
7696: return $access;
7697: }
7698: }
7699: if ($inststatus ne '') {
7700: my ($hasaccess,$hasnoaccess);
7701: foreach my $affiliation (split(/:/,$inststatus)) {
7702: if ($domdef{$tool}{$affiliation} ne '') {
7703: if ($domdef{$tool}{$affiliation}) {
7704: $hasaccess = 1;
7705: } else {
7706: $hasnoaccess = 1;
7707: }
7708: }
7709: }
7710: if ($hasaccess || $hasnoaccess) {
7711: if ($hasaccess) {
7712: $access = 1;
7713: } elsif ($hasnoaccess) {
7714: $access = 0;
7715: }
7716: return $access;
7717: }
7718: } else {
7719: if ($domdef{$tool}{'default'} ne '') {
7720: if ($domdef{$tool}{'default'}) {
7721: $access = 1;
7722: } elsif ($domdef{$tool}{'default'} == 0) {
7723: $access = 0;
7724: }
7725: return $access;
7726: }
7727: }
7728: } else {
7729: if (($context eq 'tools') && ($tool ne 'webdav')) {
7730: $access = 1;
7731: } else {
7732: $access = 0;
7733: }
7734: return $access;
7735: }
7736: }
7737:
7738: sub is_course_owner {
7739: my ($cdom,$cnum,$udom,$uname) = @_;
7740: if (($udom eq '') || ($uname eq '')) {
7741: $udom = $env{'user.domain'};
7742: $uname = $env{'user.name'};
7743: }
7744: unless (($udom eq '') || ($uname eq '')) {
7745: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
7746: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
7747: return 1;
7748: } else {
7749: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
7750: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
7751: return 1;
7752: }
7753: }
7754: }
7755: }
7756: return;
7757: }
7758:
7759: sub is_advanced_user {
7760: my ($udom,$uname) = @_;
7761: if ($udom ne '' && $uname ne '') {
7762: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7763: if (wantarray) {
7764: return ($env{'user.adv'},$env{'user.author'});
7765: } else {
7766: return $env{'user.adv'};
7767: }
7768: }
7769: }
7770: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
7771: my %allroles;
7772: my ($is_adv,$is_author);
7773: foreach my $role (keys(%roleshash)) {
7774: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
7775: my $area = '/'.$tdomain.'/'.$trest;
7776: if ($sec ne '') {
7777: $area .= '/'.$sec;
7778: }
7779: if (($area ne '') && ($trole ne '')) {
7780: my $spec=$trole.'.'.$area;
7781: if ($trole =~ /^cr\//) {
7782: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
7783: } elsif ($trole ne 'gr') {
7784: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
7785: }
7786: if ($trole eq 'au') {
7787: $is_author = 1;
7788: }
7789: }
7790: }
7791: foreach my $role (keys(%allroles)) {
7792: last if ($is_adv);
7793: foreach my $item (split(/:/,$allroles{$role})) {
7794: if ($item ne '') {
7795: my ($privilege,$restrictions)=split(/&/,$item);
7796: if ($privilege eq 'adv') {
7797: $is_adv = 1;
7798: last;
7799: }
7800: }
7801: }
7802: }
7803: if (wantarray) {
7804: return ($is_adv,$is_author);
7805: }
7806: return $is_adv;
7807: }
7808:
7809: sub check_can_request {
7810: my ($dom,$can_request,$request_domains,$uname,$udom) = @_;
7811: my $canreq = 0;
7812: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
7813: $uname = $env{'user.name'};
7814: $udom = $env{'user.domain'};
7815: }
7816: my ($types,$typename) = &Apache::loncommon::course_types();
7817: my @options = ('approval','validate','autolimit');
7818: my $optregex = join('|',@options);
7819: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
7820: foreach my $type (@{$types}) {
7821: if (&usertools_access($uname,$udom,$type,undef,
7822: 'requestcourses')) {
7823: $canreq ++;
7824: if (ref($request_domains) eq 'HASH') {
7825: push(@{$request_domains->{$type}},$udom);
7826: }
7827: if ($dom eq $udom) {
7828: $can_request->{$type} = 1;
7829: }
7830: }
7831: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '') &&
7832: ($env{'environment.reqcrsotherdom.'.$type} ne '')) {
7833: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
7834: if (@curr > 0) {
7835: foreach my $item (@curr) {
7836: if (ref($request_domains) eq 'HASH') {
7837: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
7838: if ($otherdom ne '') {
7839: if (ref($request_domains->{$type}) eq 'ARRAY') {
7840: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
7841: push(@{$request_domains->{$type}},$otherdom);
7842: }
7843: } else {
7844: push(@{$request_domains->{$type}},$otherdom);
7845: }
7846: }
7847: }
7848: }
7849: unless ($dom eq $env{'user.domain'}) {
7850: $canreq ++;
7851: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
7852: $can_request->{$type} = 1;
7853: }
7854: }
7855: }
7856: }
7857: }
7858: }
7859: return $canreq;
7860: }
7861:
7862: # ---------------------------------------------- Custom access rule evaluation
7863:
7864: sub customaccess {
7865: my ($priv,$uri)=@_;
7866: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
7867: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
7868: $udom = &LONCAPA::clean_domain($udom);
7869: $ucrs = &LONCAPA::clean_username($ucrs);
7870: my $access=0;
7871: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
7872: my ($effect,$realm,$role,$type)=split(/\:/,$right);
7873: if ($type eq 'user') {
7874: foreach my $scope (split(/\s*\,\s*/,$realm)) {
7875: my ($tdom,$tuname)=split(m{/},$scope);
7876: if ($tdom) {
7877: if ($tdom ne $env{'user.domain'}) { next; }
7878: }
7879: if ($tuname) {
7880: if ($tuname ne $env{'user.name'}) { next; }
7881: }
7882: $access=($effect eq 'allow');
7883: last;
7884: }
7885: } else {
7886: if ($role) {
7887: if ($role ne $urole) { next; }
7888: }
7889: foreach my $scope (split(/\s*\,\s*/,$realm)) {
7890: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
7891: if ($tdom) {
7892: if ($tdom ne $udom) { next; }
7893: }
7894: if ($tcrs) {
7895: if ($tcrs ne $ucrs) { next; }
7896: }
7897: if ($tsec) {
7898: if ($tsec ne $usec) { next; }
7899: }
7900: $access=($effect eq 'allow');
7901: last;
7902: }
7903: if ($realm eq '' && $role eq '') {
7904: $access=($effect eq 'allow');
7905: }
7906: }
7907: }
7908: return $access;
7909: }
7910:
7911: # ------------------------------------------------- Check for a user privilege
7912:
7913: sub allowed {
7914: my ($priv,$uri,$symb,$role,$clientip,$noblockcheck)=@_;
7915: my $ver_orguri=$uri;
7916: $uri=&deversion($uri);
7917: my $orguri=$uri;
7918: $uri=&declutter($uri);
7919:
7920: if ($priv eq 'evb') {
7921: # Evade communication block restrictions for specified role in a course
7922: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
7923: return $1;
7924: } else {
7925: return;
7926: }
7927: }
7928:
7929: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
7930: # Free bre access to adm and meta resources
7931: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard|ext\.tool)$}))
7932: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
7933: && ($priv eq 'bre')) {
7934: return 'F';
7935: }
7936:
7937: # Free bre access to user's own portfolio contents
7938: my ($space,$domain,$name,@dir)=split('/',$uri);
7939: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
7940: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
7941: my %setters;
7942: my ($startblock,$endblock) =
7943: &Apache::loncommon::blockcheck(\%setters,'port');
7944: if ($startblock && $endblock) {
7945: return 'B';
7946: } else {
7947: return 'F';
7948: }
7949: }
7950:
7951: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
7952: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
7953: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
7954: if (exists($env{'request.course.id'})) {
7955: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7956: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7957: if (($domain eq $cdom) && ($name eq $cnum)) {
7958: my $courseprivid=$env{'request.course.id'};
7959: $courseprivid=~s/\_/\//;
7960: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
7961: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
7962: return $1;
7963: } else {
7964: if ($env{'request.course.sec'}) {
7965: $courseprivid.='/'.$env{'request.course.sec'};
7966: }
7967: if ($env{'user.priv.'.$env{'request.role'}.'./'.
7968: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
7969: return $2;
7970: }
7971: }
7972: }
7973: }
7974: }
7975:
7976: # Free bre to public access
7977:
7978: if ($priv eq 'bre') {
7979: my $copyright;
7980: unless ($uri =~ /ext\.tool/) {
7981: $copyright=&metadata($uri,'copyright');
7982: }
7983: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
7984: return 'F';
7985: }
7986: if ($copyright eq 'priv') {
7987: $uri=~/([^\/]+)\/([^\/]+)\//;
7988: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
7989: return '';
7990: }
7991: }
7992: if ($copyright eq 'domain') {
7993: $uri=~/([^\/]+)\/([^\/]+)\//;
7994: unless (($env{'user.domain'} eq $1) ||
7995: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
7996: return '';
7997: }
7998: }
7999: if ($env{'request.role'}=~ /li\.\//) {
8000: # Library role, so allow browsing of resources in this domain.
8001: return 'F';
8002: }
8003: if ($copyright eq 'custom') {
8004: unless (&customaccess($priv,$uri)) { return ''; }
8005: }
8006: }
8007: # Domain coordinator is trying to create a course
8008: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
8009: # uri is the requested domain in this case.
8010: # comparison to 'request.role.domain' shows if the user has selected
8011: # a role of dc for the domain in question.
8012: return 'F' if ($uri eq $env{'request.role.domain'});
8013: }
8014:
8015: my $thisallowed='';
8016: my $statecond=0;
8017: my $courseprivid='';
8018:
8019: my $ownaccess;
8020: # Community Coordinator or Assistant Co-author browsing resource space.
8021: if (($priv eq 'bro') && ($env{'user.author'})) {
8022: if ($uri eq '') {
8023: $ownaccess = 1;
8024: } else {
8025: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
8026: my $udom = $env{'user.domain'};
8027: my $uname = $env{'user.name'};
8028: if ($uri =~ m{^\Q$udom\E/?$}) {
8029: $ownaccess = 1;
8030: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
8031: unless ($uri =~ m{\.\./}) {
8032: $ownaccess = 1;
8033: }
8034: } elsif (($udom ne 'public') && ($uname ne 'public')) {
8035: my $now = time;
8036: if ($uri =~ m{^([^/]+)/?$}) {
8037: my $adom = $1;
8038: foreach my $key (keys(%env)) {
8039: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
8040: my ($start,$end) = split('.',$env{$key});
8041: if (($now >= $start) && (!$end || $end < $now)) {
8042: $ownaccess = 1;
8043: last;
8044: }
8045: }
8046: }
8047: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
8048: my $adom = $1;
8049: my $aname = $2;
8050: foreach my $role ('ca','aa') {
8051: if ($env{"user.role.$role./$adom/$aname"}) {
8052: my ($start,$end) =
8053: split('.',$env{"user.role.$role./$adom/$aname"});
8054: if (($now >= $start) && (!$end || $end < $now)) {
8055: $ownaccess = 1;
8056: last;
8057: }
8058: }
8059: }
8060: }
8061: }
8062: }
8063: }
8064: }
8065:
8066: # Course
8067:
8068: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
8069: unless (($priv eq 'bro') && (!$ownaccess)) {
8070: $thisallowed.=$1;
8071: }
8072: }
8073:
8074: # Domain
8075:
8076: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
8077: =~/\Q$priv\E\&([^\:]*)/) {
8078: unless (($priv eq 'bro') && (!$ownaccess)) {
8079: $thisallowed.=$1;
8080: }
8081: }
8082:
8083: # User who is not author or co-author might still be able to edit
8084: # resource of an author in the domain (e.g., if Domain Coordinator).
8085: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
8086: (&allowed('mdc',$env{'request.course.id'}))) {
8087: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
8088: $thisallowed.=$1;
8089: }
8090: }
8091:
8092: # Course: uri itself is a course
8093: my $courseuri=$uri;
8094: $courseuri=~s/\_(\d)/\/$1/;
8095: $courseuri=~s/^([^\/])/\/$1/;
8096:
8097: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
8098: =~/\Q$priv\E\&([^\:]*)/) {
8099: if ($priv eq 'mip') {
8100: my $rem = $1;
8101: if (($uri ne '') && ($env{'request.course.id'} eq $uri) &&
8102: ($env{'course.'.$env{'request.course.id'}.'.internal.courseowner'} eq $env{'user.name'}.':'.$env{'user.domain'})) {
8103: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8104: if ($cdom ne '') {
8105: my %passwdconf = &get_passwdconf($cdom);
8106: if (ref($passwdconf{'crsownerchg'}) eq 'HASH') {
8107: if (ref($passwdconf{'crsownerchg'}{'by'}) eq 'ARRAY') {
8108: if (@{$passwdconf{'crsownerchg'}{'by'}}) {
8109: my @inststatuses = split(':',$env{'environment.inststatus'});
8110: unless (@inststatuses) {
8111: @inststatuses = ('default');
8112: }
8113: foreach my $status (@inststatuses) {
8114: if (grep(/^\Q$status\E$/,@{$passwdconf{'crsownerchg'}{'by'}})) {
8115: $thisallowed.=$rem;
8116: }
8117: }
8118: }
8119: }
8120: }
8121: }
8122: }
8123: } else {
8124: unless (($priv eq 'bro') && (!$ownaccess)) {
8125: $thisallowed.=$1;
8126: }
8127: }
8128: }
8129:
8130: # URI is an uploaded document for this course, default permissions don't matter
8131: # not allowing 'edit' access (editupload) to uploaded course docs
8132: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
8133: $thisallowed='';
8134: my ($match)=&is_on_map($uri);
8135: if ($match) {
8136: if ($env{'user.priv.'.$env{'request.role'}.'./'}
8137: =~/\Q$priv\E\&([^\:]*)/) {
8138: my $value = $1;
8139: my $deeplinkblock = &deeplink_check($priv,$symb,$uri);
8140: if ($deeplinkblock) {
8141: $thisallowed='D';
8142: } elsif ($noblockcheck) {
8143: $thisallowed.=$value;
8144: } else {
8145: my @blockers = &has_comm_blocking($priv,$symb,$uri);
8146: if (@blockers > 0) {
8147: $thisallowed = 'B';
8148: } else {
8149: $thisallowed.=$value;
8150: }
8151: }
8152: }
8153: } else {
8154: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
8155: if ($refuri) {
8156: if ($refuri =~ m|^/adm/|) {
8157: $thisallowed='F';
8158: } else {
8159: $refuri=&declutter($refuri);
8160: my ($match) = &is_on_map($refuri);
8161: if ($match) {
8162: my $deeplinkblock = &deeplink_check($priv,$symb,$refuri);
8163: if ($deeplinkblock) {
8164: $thisallowed='D';
8165: } elsif ($noblockcheck) {
8166: $thisallowed='F';
8167: } else {
8168: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
8169: if (@blockers > 0) {
8170: $thisallowed = 'B';
8171: } else {
8172: $thisallowed='F';
8173: }
8174: }
8175: }
8176: }
8177: }
8178: }
8179: }
8180:
8181: if ($priv eq 'bre'
8182: && $thisallowed ne 'F'
8183: && $thisallowed ne '2'
8184: && &is_portfolio_url($uri)) {
8185: $thisallowed = &portfolio_access($uri,$clientip);
8186: }
8187:
8188: # Full access at system, domain or course-wide level? Exit.
8189: if ($thisallowed=~/F/) {
8190: return 'F';
8191: }
8192:
8193: # If this is generating or modifying users, exit with special codes
8194:
8195: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
8196: if (($priv eq 'cca') || ($priv eq 'caa')) {
8197: my ($audom,$auname)=split('/',$uri);
8198: # no author name given, so this just checks on the general right to make a co-author in this domain
8199: unless ($auname) { return $thisallowed; }
8200: # an author name is given, so we are about to actually make a co-author for a certain account
8201: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
8202: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
8203: ($audom ne $env{'request.role.domain'}))) { return ''; }
8204: }
8205: return $thisallowed;
8206: }
8207: #
8208: # Gathered so far: system, domain and course wide privileges
8209: #
8210: # Course: See if uri or referer is an individual resource that is part of
8211: # the course
8212:
8213: if ($env{'request.course.id'}) {
8214:
8215: # If this is modifying password (internal auth) domains must match for user and user's role.
8216:
8217: if ($priv eq 'mip') {
8218: if ($env{'user.domain'} eq $env{'request.role.domain'}) {
8219: return $thisallowed;
8220: } else {
8221: return '';
8222: }
8223: }
8224:
8225: $courseprivid=$env{'request.course.id'};
8226: if ($env{'request.course.sec'}) {
8227: $courseprivid.='/'.$env{'request.course.sec'};
8228: }
8229: $courseprivid=~s/\_/\//;
8230: my $checkreferer=1;
8231: my ($match,$cond)=&is_on_map($uri);
8232: if ($match) {
8233: $statecond=$cond;
8234: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
8235: =~/\Q$priv\E\&([^\:]*)/) {
8236: my $value = $1;
8237: if ($priv eq 'bre') {
8238: if ($noblockcheck) {
8239: $thisallowed.=$value;
8240: } else {
8241: my @blockers = &has_comm_blocking($priv,$symb,$uri);
8242: if (@blockers > 0) {
8243: $thisallowed = 'B';
8244: } else {
8245: $thisallowed.=$value;
8246: }
8247: }
8248: } else {
8249: $thisallowed.=$value;
8250: }
8251: $checkreferer=0;
8252: }
8253: }
8254:
8255: if ($checkreferer) {
8256: my $refuri=$env{'httpref.'.$orguri};
8257: unless ($refuri) {
8258: foreach my $key (keys(%env)) {
8259: if ($key=~/^httpref\..*\*/) {
8260: my $pattern=$key;
8261: $pattern=~s/^httpref\.\/res\///;
8262: $pattern=~s/\*/\[\^\/\]\+/g;
8263: $pattern=~s/\//\\\//g;
8264: if ($orguri=~/$pattern/) {
8265: $refuri=$env{$key};
8266: }
8267: }
8268: }
8269: }
8270:
8271: if ($refuri) {
8272: $refuri=&declutter($refuri);
8273: my ($match,$cond)=&is_on_map($refuri);
8274: if ($match) {
8275: my $refstatecond=$cond;
8276: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
8277: =~/\Q$priv\E\&([^\:]*)/) {
8278: my $value = $1;
8279: if ($priv eq 'bre') {
8280: my $deeplinkblock = &deeplink_check($priv,$symb,$refuri);
8281: if ($deeplinkblock) {
8282: $thisallowed = 'D';
8283: } elsif ($noblockcheck) {
8284: $thisallowed.=$value;
8285: } else {
8286: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
8287: if (@blockers > 0) {
8288: $thisallowed = 'B';
8289: } else {
8290: $thisallowed.=$value;
8291: }
8292: }
8293: } else {
8294: $thisallowed.=$value;
8295: }
8296: $uri=$refuri;
8297: $statecond=$refstatecond;
8298: }
8299: }
8300: }
8301: }
8302: }
8303:
8304: #
8305: # Gathered now: all privileges that could apply, and condition number
8306: #
8307: #
8308: # Full or no access?
8309: #
8310:
8311: if ($thisallowed=~/F/) {
8312: return 'F';
8313: }
8314:
8315: unless ($thisallowed) {
8316: return '';
8317: }
8318:
8319: # Restrictions exist, deal with them
8320: #
8321: # C:according to course preferences
8322: # R:according to resource settings
8323: # L:unless locked
8324: # X:according to user session state
8325: #
8326:
8327: # Possibly locked functionality, check all courses
8328: # Locks might take effect only after 10 minutes cache expiration for other
8329: # courses, and 2 minutes for current course
8330:
8331: my $envkey;
8332: if ($thisallowed=~/L/) {
8333: foreach $envkey (keys(%env)) {
8334: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
8335: my $courseid=$2;
8336: my $roleid=$1.'.'.$2;
8337: $courseid=~s/^\///;
8338: my $expiretime=600;
8339: if ($env{'request.role'} eq $roleid) {
8340: $expiretime=120;
8341: }
8342: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
8343: my $prefix='course.'.$cdom.'_'.$cnum.'.';
8344: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
8345: &coursedescription($courseid,{'freshen_cache' => 1});
8346: }
8347: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
8348: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
8349: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
8350: &log($env{'user.domain'},$env{'user.name'},
8351: $env{'user.home'},
8352: 'Locked by res: '.$priv.' for '.$uri.' due to '.
8353: $cdom.'/'.$cnum.'/'.$csec.' expire '.
8354: $env{$prefix.'priv.'.$priv.'.lock.expire'});
8355: return '';
8356: }
8357: }
8358: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
8359: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
8360: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
8361: &log($env{'user.domain'},$env{'user.name'},
8362: $env{'user.home'},
8363: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
8364: $cdom.'/'.$cnum.'/'.$csec.' expire '.
8365: $env{$prefix.'priv.'.$priv.'.lock.expire'});
8366: return '';
8367: }
8368: }
8369: }
8370: }
8371: }
8372:
8373: #
8374: # Rest of the restrictions depend on selected course
8375: #
8376:
8377: unless ($env{'request.course.id'}) {
8378: if ($thisallowed eq 'A') {
8379: return 'A';
8380: } elsif ($thisallowed eq 'B') {
8381: return 'B';
8382: } else {
8383: return '1';
8384: }
8385: }
8386:
8387: #
8388: # Now user is definitely in a course
8389: #
8390:
8391:
8392: # Course preferences
8393:
8394: if ($thisallowed=~/C/) {
8395: my $rolecode=(split(/\./,$env{'request.role'}))[0];
8396: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
8397: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
8398: =~/\Q$rolecode\E/) {
8399: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
8400: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
8401: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
8402: $env{'request.course.id'});
8403: }
8404: return '';
8405: }
8406:
8407: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
8408: =~/\Q$unamedom\E/) {
8409: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
8410: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
8411: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
8412: $env{'request.course.id'});
8413: }
8414: return '';
8415: }
8416: }
8417:
8418: # Resource preferences
8419:
8420: if ($thisallowed=~/R/) {
8421: my $rolecode=(split(/\./,$env{'request.role'}))[0];
8422: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
8423: if (($priv ne 'pch') && ($priv ne 'plc')) {
8424: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
8425: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
8426: }
8427: return '';
8428: }
8429: }
8430:
8431: # Restricted by state or randomout?
8432:
8433: if ($thisallowed=~/X/) {
8434: if ($env{'acc.randomout'}) {
8435: if (!$symb) { $symb=&symbread($uri,1); }
8436: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
8437: return '';
8438: }
8439: }
8440: if (&condval($statecond)) {
8441: return '2';
8442: } else {
8443: return '';
8444: }
8445: }
8446:
8447: if ($thisallowed eq 'A') {
8448: return 'A';
8449: } elsif ($thisallowed eq 'B') {
8450: return 'B';
8451: } elsif ($thisallowed eq 'D') {
8452: return 'D';
8453: }
8454: return 'F';
8455: }
8456:
8457: # ------------------------------------------- Check construction space access
8458:
8459: sub constructaccess {
8460: my ($url,$setpriv)=@_;
8461:
8462: # We do not allow editing of previous versions of files
8463: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
8464:
8465: # Get username and domain from URL
8466: my ($ownername,$ownerdomain,$ownerhome);
8467:
8468: ($ownerdomain,$ownername) =
8469: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)(?:/daxepage|/daxeopen)?/priv/($match_domain)/($match_username)(?:/|$)});
8470:
8471: # The URL does not really point to any authorspace, forget it
8472: unless (($ownername) && ($ownerdomain)) { return ''; }
8473:
8474: # Now we need to see if the user has access to the authorspace of
8475: # $ownername at $ownerdomain
8476:
8477: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
8478: # Real author for this?
8479: $ownerhome = $env{'user.home'};
8480: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
8481: return ($ownername,$ownerdomain,$ownerhome);
8482: }
8483: } else {
8484: # Co-author for this?
8485: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
8486: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
8487: $ownerhome = &homeserver($ownername,$ownerdomain);
8488: return ($ownername,$ownerdomain,$ownerhome);
8489: }
8490: if ($env{'request.course.id'}) {
8491: if (($ownername eq $env{'course.'.$env{'request.course.id'}.'.num'}) &&
8492: ($ownerdomain eq $env{'course.'.$env{'request.course.id'}.'.domain'})) {
8493: if (&allowed('mdc',$env{'request.course.id'})) {
8494: $ownerhome = $env{'course.'.$env{'request.course.id'}.'.home'};
8495: return ($ownername,$ownerdomain,$ownerhome);
8496: }
8497: }
8498: }
8499: }
8500:
8501: # We don't have any access right now. If we are not possibly going to do anything about this,
8502: # we might as well leave
8503: unless ($setpriv) { return ''; }
8504:
8505: # Backdoor access?
8506: my $allowed=&allowed('eco',$ownerdomain);
8507: # Nope
8508: unless ($allowed) { return ''; }
8509: # Looks like we may have access, but could be locked by the owner of the construction space
8510: if ($allowed eq 'U') {
8511: my %blocked=&get('environment',['domcoord.author'],
8512: $ownerdomain,$ownername);
8513: # Is blocked by owner
8514: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
8515: }
8516: if (($allowed eq 'F') || ($allowed eq 'U')) {
8517: # Grant temporary access
8518: my $then=$env{'user.login.time'};
8519: my $update=$env{'user.update.time'};
8520: if (!$update) { $update = $then; }
8521: my $refresh=$env{'user.refresh.time'};
8522: if (!$refresh) { $refresh = $update; }
8523: my $now = time;
8524: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
8525: $now,'ca','constructaccess');
8526: $ownerhome = &homeserver($ownername,$ownerdomain);
8527: return($ownername,$ownerdomain,$ownerhome);
8528: }
8529: # No business here
8530: return '';
8531: }
8532:
8533: # ----------------------------------------------------------- Content Blocking
8534:
8535: {
8536: # Caches for faster Course Contents display where content blocking
8537: # is in operation (i.e., interval param set) for timed quiz.
8538: #
8539: # User for whom data are being temporarily cached.
8540: my $cacheduser='';
8541: # Cached blockers for this user (a hash of blocking items).
8542: my %cachedblockers=();
8543: # When the data were last cached.
8544: my $cachedlast='';
8545:
8546: sub load_all_blockers {
8547: my ($uname,$udom,$blocks)=@_;
8548: if (($uname ne '') && ($udom ne '')) {
8549: if (($cacheduser eq $uname.':'.$udom) &&
8550: (abs($cachedlast-time)<5)) {
8551: return;
8552: }
8553: }
8554: $cachedlast=time;
8555: $cacheduser=$uname.':'.$udom;
8556: %cachedblockers = &get_commblock_resources($blocks);
8557: }
8558:
8559: sub get_comm_blocks {
8560: my ($cdom,$cnum) = @_;
8561: if ($cdom eq '' || $cnum eq '') {
8562: return unless ($env{'request.course.id'});
8563: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
8564: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8565: }
8566: my %commblocks;
8567: my $hashid=$cdom.'_'.$cnum;
8568: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
8569: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
8570: %commblocks = %{$blocksref};
8571: } else {
8572: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
8573: my $cachetime = 600;
8574: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
8575: }
8576: return %commblocks;
8577: }
8578:
8579: sub get_commblock_resources {
8580: my ($blocks) = @_;
8581: my %blockers = ();
8582: return %blockers unless ($env{'request.course.id'});
8583: return %blockers if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
8584: my %commblocks;
8585: if (ref($blocks) eq 'HASH') {
8586: %commblocks = %{$blocks};
8587: } else {
8588: %commblocks = &get_comm_blocks();
8589: }
8590: return %blockers unless (keys(%commblocks) > 0);
8591: my $navmap = Apache::lonnavmaps::navmap->new();
8592: return %blockers unless (ref($navmap));
8593: my $now = time;
8594: foreach my $block (keys(%commblocks)) {
8595: if ($block =~ /^(\d+)____(\d+)$/) {
8596: my ($start,$end) = ($1,$2);
8597: if ($start <= $now && $end >= $now) {
8598: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
8599: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
8600: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
8601: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
8602: $blockers{$block}{maps} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
8603: }
8604: }
8605: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
8606: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
8607: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
8608: }
8609: }
8610: }
8611: }
8612: }
8613: } elsif ($block =~ /^firstaccess____(.+)$/) {
8614: my $item = $1;
8615: my @to_test;
8616: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
8617: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
8618: my @interval;
8619: my $type = 'map';
8620: if ($item eq 'course') {
8621: $type = 'course';
8622: @interval=&EXT("resource.0.interval");
8623: } else {
8624: if ($item =~ /___\d+___/) {
8625: $type = 'resource';
8626: @interval=&EXT("resource.0.interval",$item);
8627: if (ref($navmap)) {
8628: my $res = $navmap->getBySymb($item);
8629: push(@to_test,$res);
8630: }
8631: } else {
8632: my $mapsymb = &symbread($item,1);
8633: if ($mapsymb) {
8634: if (ref($navmap)) {
8635: my $mapres = $navmap->getBySymb($mapsymb);
8636: @to_test = $mapres->retrieveResources($mapres,undef,0,0,0,1);
8637: foreach my $res (@to_test) {
8638: my $symb = $res->symb();
8639: next if ($symb eq $mapsymb);
8640: if ($symb ne '') {
8641: @interval=&EXT("resource.0.interval",$symb);
8642: if ($interval[1] eq 'map') {
8643: last;
8644: }
8645: }
8646: }
8647: }
8648: }
8649: }
8650: }
8651: if ($interval[0] =~ /^(\d+)/) {
8652: my $timelimit = $1;
8653: my $first_access;
8654: if ($type eq 'resource') {
8655: $first_access=&get_first_access($interval[1],$item);
8656: } elsif ($type eq 'map') {
8657: $first_access=&get_first_access($interval[1],undef,$item);
8658: } else {
8659: $first_access=&get_first_access($interval[1]);
8660: }
8661: if ($first_access) {
8662: my $timesup = $first_access+$timelimit;
8663: if ($timesup > $now) {
8664: my $activeblock;
8665: foreach my $res (@to_test) {
8666: if ($res->answerable()) {
8667: $activeblock = 1;
8668: last;
8669: }
8670: }
8671: if ($activeblock) {
8672: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
8673: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
8674: $blockers{$block}{'maps'} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
8675: }
8676: }
8677: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
8678: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
8679: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
8680: }
8681: }
8682: }
8683: }
8684: }
8685: }
8686: }
8687: }
8688: }
8689: }
8690: return %blockers;
8691: }
8692:
8693: sub has_comm_blocking {
8694: my ($priv,$symb,$uri,$blocks) = @_;
8695: my @blockers;
8696: return unless ($env{'request.course.id'});
8697: return unless ($priv eq 'bre');
8698: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
8699: return if ($env{'request.state'} eq 'construct');
8700: &load_all_blockers($env{'user.name'},$env{'user.domain'},$blocks);
8701: return unless (keys(%cachedblockers) > 0);
8702: my (%possibles,@symbs);
8703: if (!$symb) {
8704: $symb = &symbread($uri,1,1,1,\%possibles);
8705: }
8706: if ($symb) {
8707: @symbs = ($symb);
8708: } elsif (keys(%possibles)) {
8709: @symbs = keys(%possibles);
8710: }
8711: my $noblock;
8712: foreach my $symb (@symbs) {
8713: last if ($noblock);
8714: my ($map,$resid,$resurl)=&decode_symb($symb);
8715: foreach my $block (keys(%cachedblockers)) {
8716: if ($block =~ /^firstaccess____(.+)$/) {
8717: my $item = $1;
8718: if (($item eq $map) || ($item eq $symb)) {
8719: $noblock = 1;
8720: last;
8721: }
8722: }
8723: if (ref($cachedblockers{$block}) eq 'HASH') {
8724: if (ref($cachedblockers{$block}{'resources'}) eq 'HASH') {
8725: if ($cachedblockers{$block}{'resources'}{$symb}) {
8726: unless (grep(/^\Q$block\E$/,@blockers)) {
8727: push(@blockers,$block);
8728: }
8729: }
8730: }
8731: }
8732: if (ref($cachedblockers{$block}{'maps'}) eq 'HASH') {
8733: if ($cachedblockers{$block}{'maps'}{$map}) {
8734: unless (grep(/^\Q$block\E$/,@blockers)) {
8735: push(@blockers,$block);
8736: }
8737: }
8738: }
8739: }
8740: }
8741: return if ($noblock);
8742: return @blockers;
8743: }
8744: }
8745:
8746: sub deeplink_check {
8747: my ($priv,$symb,$uri) = @_;
8748: return unless ($env{'request.course.id'});
8749: return unless ($priv eq 'bre');
8750: return if ($env{'request.state'} eq 'construct');
8751: return if ($env{'request.role.adv'});
8752: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8753: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
8754: my (%possibles,@symbs);
8755: if (!$symb) {
8756: $symb = &symbread($uri,1,1,1,\%possibles);
8757: }
8758: if ($symb) {
8759: @symbs = ($symb);
8760: } elsif (keys(%possibles)) {
8761: @symbs = keys(%possibles);
8762: }
8763:
8764: my ($login,$switchrole,$allow);
8765: if ($env{'request.deeplink.login'} =~ m{^\Q/tiny/$cdom/\E(\w+)$}) {
8766: my $key = $1;
8767: my $tinyurl;
8768: my ($result,$cached)=&Apache::lonnet::is_cached_new('tiny',$cdom."\0".$key);
8769: if (defined($cached)) {
8770: $tinyurl = $result;
8771: } else {
8772: my $configuname = &Apache::lonnet::get_domainconfiguser($cdom);
8773: my %currtiny = &Apache::lonnet::get('tiny',[$key],$cdom,$configuname);
8774: if ($currtiny{$key} ne '') {
8775: $tinyurl = $currtiny{$key};
8776: &Apache::lonnet::do_cache_new('tiny',$cdom."\0".$key,$currtiny{$key},600);
8777: }
8778: }
8779: if ($tinyurl ne '') {
8780: my ($cnumreq,$posslogin) = split(/\&/,$tinyurl);
8781: if ($cnumreq eq $cnum) {
8782: $login = $posslogin;
8783: } else {
8784: $switchrole = 1;
8785: }
8786: }
8787: }
8788: foreach my $symb (@symbs) {
8789: last if ($allow);
8790: my $deeplink = &EXT("resource.0.deeplink",$symb);
8791: if ($deeplink eq '') {
8792: $allow = 1;
8793: } else {
8794: my ($listed,$scope,$access) = split(/,/,$deeplink);
8795: if ($access eq 'any') {
8796: $allow = 1;
8797: } elsif ($login) {
8798: if ($access eq 'only') {
8799: if ($scope eq 'res') {
8800: if ($symb eq $login) {
8801: $allow = 1;
8802: }
8803: } elsif ($scope eq 'map') {
8804: #FIXME Compare map for $env{'request.deeplink.login'} with map for $symb
8805: } elsif ($scope eq 'rec') {
8806: #FIXME Recurse up for $env{'request.deeplink.login'} with map for $symb
8807: }
8808: } else {
8809: my ($acctype,$item) = split(/:/,$access);
8810: if (($acctype eq 'lti') && ($env{'user.linkprotector'})) {
8811: if (grep(/^\Q$item\E$/,split(/,/,$env{'user.linkprotector'}))) {
8812: my %tinyurls = &get('tiny',[$symb],$cdom,$cnum);
8813: if (grep(/\Q$tinyurls{$symb}\E$/,split(/,/,$env{'user.linkproturis'}))) {
8814: $allow = 1;
8815: }
8816: }
8817: } elsif (($acctype eq 'key') && ($env{'user.deeplinkkey'})) {
8818: if (grep(/^\Q$item\E$/,split(/,/,$env{'user.deeplinkkey'}))) {
8819: my %tinyurls = &get('tiny',[$symb],$cdom,$cnum);
8820: if (grep(/\Q$tinyurls{$symb}\E$/,split(/,/,$env{'user.keyedlinkuri'}))) {
8821: $allow = 1;
8822: }
8823: }
8824: }
8825: }
8826: }
8827: }
8828: }
8829: return if ($allow);
8830: return 1;
8831: }
8832:
8833: # -------------------------------- Deversion and split uri into path an filename
8834:
8835: #
8836: # Removes the version from a URI and
8837: # splits it in to its filename and path to the filename.
8838: # Seems like File::Basename could have done this more clearly.
8839: # Parameters:
8840: # $uri - input URI
8841: # Returns:
8842: # Two element list consisting of
8843: # $pathname - the URI up to and excluding the trailing /
8844: # $filename - The part of the URI following the last /
8845: # NOTE:
8846: # Another realization of this is simply:
8847: # use File::Basename;
8848: # ...
8849: # $uri = shift;
8850: # $filename = basename($uri);
8851: # $path = dirname($uri);
8852: # return ($filename, $path);
8853: #
8854: # The implementation below is probably faster however.
8855: #
8856: sub split_uri_for_cond {
8857: my $uri=&deversion(&declutter(shift));
8858: my @uriparts=split(/\//,$uri);
8859: my $filename=pop(@uriparts);
8860: my $pathname=join('/',@uriparts);
8861: return ($pathname,$filename);
8862: }
8863: # --------------------------------------------------- Is a resource on the map?
8864:
8865: sub is_on_map {
8866: my ($pathname,$filename) = &split_uri_for_cond(shift);
8867: #Trying to find the conditional for the file
8868: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
8869: /\&\Q$filename\E\:([\d\|]+)\&/);
8870: if ($match) {
8871: return (1,$1);
8872: } else {
8873: return (0,0);
8874: }
8875: }
8876:
8877: # --------------------------------------------------------- Get symb from alias
8878:
8879: sub get_symb_from_alias {
8880: my $symb=shift;
8881: my ($map,$resid,$url)=&decode_symb($symb);
8882: # Already is a symb
8883: if ($url) { return $symb; }
8884: # Must be an alias
8885: my $aliassymb='';
8886: my %bighash;
8887: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8888: &GDBM_READER(),0640)) {
8889: my $rid=$bighash{'mapalias_'.$symb};
8890: if ($rid) {
8891: my ($mapid,$resid)=split(/\./,$rid);
8892: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
8893: $resid,$bighash{'src_'.$rid});
8894: }
8895: untie %bighash;
8896: }
8897: return $aliassymb;
8898: }
8899:
8900: # ----------------------------------------------------------------- Define Role
8901:
8902: sub definerole {
8903: if (allowed('mcr','/')) {
8904: my ($rolename,$sysrole,$domrole,$courole,$uname,$udom)=@_;
8905: foreach my $role (split(':',$sysrole)) {
8906: my ($crole,$cqual)=split(/\&/,$role);
8907: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
8908: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
8909: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
8910: return "refused:s:$crole&$cqual";
8911: }
8912: }
8913: }
8914: foreach my $role (split(':',$domrole)) {
8915: my ($crole,$cqual)=split(/\&/,$role);
8916: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
8917: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
8918: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
8919: return "refused:d:$crole&$cqual";
8920: }
8921: }
8922: }
8923: foreach my $role (split(':',$courole)) {
8924: my ($crole,$cqual)=split(/\&/,$role);
8925: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
8926: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
8927: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
8928: return "refused:c:$crole&$cqual";
8929: }
8930: }
8931: }
8932: my $uhome;
8933: if (($uname ne '') && ($udom ne '')) {
8934: $uhome = &homeserver($uname,$udom);
8935: return $uhome if ($uhome eq 'no_host');
8936: } else {
8937: $uname = $env{'user.name'};
8938: $udom = $env{'user.domain'};
8939: $uhome = $env{'user.home'};
8940: }
8941: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
8942: "$udom:$uname:rolesdef_$rolename=".
8943: escape($sysrole.'_'.$domrole.'_'.$courole);
8944: return reply($command,$uhome);
8945: } else {
8946: return 'refused';
8947: }
8948: }
8949:
8950: # ---------------- Make a metadata query against the network of library servers
8951:
8952: sub metadata_query {
8953: my ($query,$custom,$customshow,$server_array,$domains_hash)=@_;
8954: my %rhash;
8955: my %libserv = &all_library();
8956: my @server_list = (defined($server_array) ? @$server_array
8957: : keys(%libserv) );
8958: for my $server (@server_list) {
8959: my $domains = '';
8960: if (ref($domains_hash) eq 'HASH') {
8961: $domains = $domains_hash->{$server};
8962: }
8963: unless ($custom or $customshow) {
8964: my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server);
8965: $rhash{$server}=$reply;
8966: }
8967: else {
8968: my $reply=&reply("querysend:".&escape($query).':'.
8969: &escape($custom).':'.&escape($customshow).':'.&escape($domains),
8970: $server);
8971: $rhash{$server}=$reply;
8972: }
8973: }
8974: return \%rhash;
8975: }
8976:
8977: # ----------------------------------------- Send log queries and wait for reply
8978:
8979: sub log_query {
8980: my ($uname,$udom,$query,%filters)=@_;
8981: my $uhome=&homeserver($uname,$udom);
8982: if ($uhome eq 'no_host') { return 'error: no_host'; }
8983: my $uhost=&hostname($uhome);
8984: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
8985: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
8986: $uhome);
8987: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
8988: return get_query_reply($queryid);
8989: }
8990:
8991: # -------------------------- Update MySQL table for portfolio file
8992:
8993: sub update_portfolio_table {
8994: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
8995: if ($group ne '') {
8996: $file_name =~s /^\Q$group\E//;
8997: }
8998: my $homeserver = &homeserver($uname,$udom);
8999: my $queryid=
9000: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
9001: ':'.&escape($file_name).':'.$action,$homeserver);
9002: my $reply = &get_query_reply($queryid);
9003: return $reply;
9004: }
9005:
9006: # -------------------------- Update MySQL allusers table
9007:
9008: sub update_allusers_table {
9009: my ($uname,$udom,$names) = @_;
9010: my $homeserver = &homeserver($uname,$udom);
9011: my $queryid=
9012: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
9013: 'lastname='.&escape($names->{'lastname'}).'%%'.
9014: 'firstname='.&escape($names->{'firstname'}).'%%'.
9015: 'middlename='.&escape($names->{'middlename'}).'%%'.
9016: 'generation='.&escape($names->{'generation'}).'%%'.
9017: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
9018: 'id='.&escape($names->{'id'}),$homeserver);
9019: return;
9020: }
9021:
9022: # ------- Request retrieval of institutional classlists for course(s)
9023:
9024: sub fetch_enrollment_query {
9025: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
9026: my ($homeserver,$sleep,$loopmax);
9027: my $maxtries = 1;
9028: if ($context eq 'automated') {
9029: $homeserver = $perlvar{'lonHostID'};
9030: $sleep = 2;
9031: $loopmax = 100;
9032: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
9033: } else {
9034: $homeserver = &homeserver($cnum,$dom);
9035: }
9036: my $host=&hostname($homeserver);
9037: my $cmd = '';
9038: foreach my $affiliate (keys(%{$affiliatesref})) {
9039: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
9040: }
9041: $cmd =~ s/%%$//;
9042: $cmd = &escape($cmd);
9043: my $query = 'fetchenrollment';
9044: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
9045: unless ($queryid=~/^\Q$host\E\_/) {
9046: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
9047: return 'error: '.$queryid;
9048: }
9049: my $reply = &get_query_reply($queryid,$sleep,$loopmax);
9050: my $tries = 1;
9051: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
9052: $reply = &get_query_reply($queryid,$sleep,$loopmax);
9053: $tries ++;
9054: }
9055: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
9056: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
9057: } else {
9058: my @responses = split(/:/,$reply);
9059: if (grep { $_ eq $homeserver } ¤t_machine_ids()) {
9060: foreach my $line (@responses) {
9061: my ($key,$value) = split(/=/,$line,2);
9062: $$replyref{$key} = $value;
9063: }
9064: } else {
9065: my $pathname = LONCAPA::tempdir();
9066: foreach my $line (@responses) {
9067: my ($key,$value) = split(/=/,$line);
9068: $$replyref{$key} = $value;
9069: if ($value > 0) {
9070: foreach my $item (@{$$affiliatesref{$key}}) {
9071: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
9072: my $destname = $pathname.'/'.$filename;
9073: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
9074: if ($xml_classlist =~ /^error/) {
9075: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
9076: } else {
9077: if ( open(FILE,">",$destname) ) {
9078: print FILE &unescape($xml_classlist);
9079: close(FILE);
9080: } else {
9081: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
9082: }
9083: }
9084: }
9085: }
9086: }
9087: }
9088: return 'ok';
9089: }
9090: return 'error';
9091: }
9092:
9093: sub get_query_reply {
9094: my ($queryid,$sleep,$loopmax) = @_;;
9095: if (($sleep eq '') || ($sleep !~ /^\d+\.?\d*$/)) {
9096: $sleep = 0.2;
9097: }
9098: if (($loopmax eq '') || ($loopmax =~ /\D/)) {
9099: $loopmax = 100;
9100: }
9101: my $replyfile=LONCAPA::tempdir().$queryid;
9102: my $reply='';
9103: for (1..$loopmax) {
9104: sleep($sleep);
9105: if (-e $replyfile.'.end') {
9106: if (open(my $fh,"<",$replyfile)) {
9107: $reply = join('',<$fh>);
9108: close($fh);
9109: } else { return 'error: reply_file_error'; }
9110: return &unescape($reply);
9111: }
9112: }
9113: return 'timeout:'.$queryid;
9114: }
9115:
9116: sub courselog_query {
9117: #
9118: # possible filters:
9119: # url: url or symb
9120: # username
9121: # domain
9122: # action: view, submit, grade
9123: # start: timestamp
9124: # end: timestamp
9125: #
9126: my (%filters)=@_;
9127: unless ($env{'request.course.id'}) { return 'no_course'; }
9128: if ($filters{'url'}) {
9129: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
9130: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
9131: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
9132: }
9133: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
9134: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
9135: return &log_query($cname,$cdom,'courselog',%filters);
9136: }
9137:
9138: sub userlog_query {
9139: #
9140: # possible filters:
9141: # action: log check role
9142: # start: timestamp
9143: # end: timestamp
9144: #
9145: my ($uname,$udom,%filters)=@_;
9146: return &log_query($uname,$udom,'userlog',%filters);
9147: }
9148:
9149: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
9150:
9151: sub auto_run {
9152: my ($cnum,$cdom) = @_;
9153: my $response = 0;
9154: my $settings;
9155: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
9156: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
9157: $settings = $domconfig{'autoenroll'};
9158: if ($settings->{'run'} eq '1') {
9159: $response = 1;
9160: }
9161: } else {
9162: my $homeserver;
9163: if (&is_course($cdom,$cnum)) {
9164: $homeserver = &homeserver($cnum,$cdom);
9165: } else {
9166: $homeserver = &domain($cdom,'primary');
9167: }
9168: if ($homeserver ne 'no_host') {
9169: $response = &reply('autorun:'.$cdom,$homeserver);
9170: }
9171: }
9172: return $response;
9173: }
9174:
9175: sub auto_get_sections {
9176: my ($cnum,$cdom,$inst_coursecode) = @_;
9177: my $homeserver;
9178: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9179: $homeserver = &homeserver($cnum,$cdom);
9180: }
9181: if (!defined($homeserver)) {
9182: if ($cdom =~ /^$match_domain$/) {
9183: $homeserver = &domain($cdom,'primary');
9184: }
9185: }
9186: my @secs;
9187: if (defined($homeserver)) {
9188: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
9189: unless ($response eq 'refused') {
9190: @secs = split(/:/,$response);
9191: }
9192: }
9193: return @secs;
9194: }
9195:
9196: sub auto_new_course {
9197: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
9198: my $homeserver = &homeserver($cnum,$cdom);
9199: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
9200: return $response;
9201: }
9202:
9203: sub auto_validate_courseID {
9204: my ($cnum,$cdom,$inst_course_id) = @_;
9205: my $homeserver = &homeserver($cnum,$cdom);
9206: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
9207: return $response;
9208: }
9209:
9210: sub auto_validate_instcode {
9211: my ($cnum,$cdom,$instcode,$owner) = @_;
9212: my ($homeserver,$response);
9213: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9214: $homeserver = &homeserver($cnum,$cdom);
9215: }
9216: if (!defined($homeserver)) {
9217: if ($cdom =~ /^$match_domain$/) {
9218: $homeserver = &domain($cdom,'primary');
9219: }
9220: }
9221: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
9222: &escape($instcode).':'.&escape($owner),$homeserver));
9223: my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
9224: return ($outcome,$description,$defaultcredits);
9225: }
9226:
9227: sub auto_create_password {
9228: my ($cnum,$cdom,$authparam,$udom) = @_;
9229: my ($homeserver,$response);
9230: my $create_passwd = 0;
9231: my $authchk = '';
9232: if ($udom =~ /^$match_domain$/) {
9233: $homeserver = &domain($udom,'primary');
9234: }
9235: if ($homeserver eq '') {
9236: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9237: $homeserver = &homeserver($cnum,$cdom);
9238: }
9239: }
9240: if ($homeserver eq '') {
9241: $authchk = 'nodomain';
9242: } else {
9243: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
9244: if ($response eq 'refused') {
9245: $authchk = 'refused';
9246: } else {
9247: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
9248: }
9249: }
9250: return ($authparam,$create_passwd,$authchk);
9251: }
9252:
9253: sub auto_photo_permission {
9254: my ($cnum,$cdom,$students) = @_;
9255: my $homeserver = &homeserver($cnum,$cdom);
9256: my ($outcome,$perm_reqd,$conditions) =
9257: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
9258: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
9259: return (undef,undef);
9260: }
9261: return ($outcome,$perm_reqd,$conditions);
9262: }
9263:
9264: sub auto_checkphotos {
9265: my ($uname,$udom,$pid) = @_;
9266: my $homeserver = &homeserver($uname,$udom);
9267: my ($result,$resulttype);
9268: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
9269: &escape($uname).':'.&escape($pid),
9270: $homeserver));
9271: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
9272: return (undef,undef);
9273: }
9274: if ($outcome) {
9275: ($result,$resulttype) = split(/:/,$outcome);
9276: }
9277: return ($result,$resulttype);
9278: }
9279:
9280: sub auto_photochoice {
9281: my ($cnum,$cdom) = @_;
9282: my $homeserver = &homeserver($cnum,$cdom);
9283: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
9284: &escape($cdom),
9285: $homeserver)));
9286: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
9287: return (undef,undef);
9288: }
9289: return ($update,$comment);
9290: }
9291:
9292: sub auto_photoupdate {
9293: my ($affiliatesref,$dom,$cnum,$photo) = @_;
9294: my $homeserver = &homeserver($cnum,$dom);
9295: my $host=&hostname($homeserver);
9296: my $cmd = '';
9297: my $maxtries = 1;
9298: foreach my $affiliate (keys(%{$affiliatesref})) {
9299: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
9300: }
9301: $cmd =~ s/%%$//;
9302: $cmd = &escape($cmd);
9303: my $query = 'institutionalphotos';
9304: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
9305: unless ($queryid=~/^\Q$host\E\_/) {
9306: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
9307: return 'error: '.$queryid;
9308: }
9309: my $reply = &get_query_reply($queryid);
9310: my $tries = 1;
9311: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
9312: $reply = &get_query_reply($queryid);
9313: $tries ++;
9314: }
9315: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
9316: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
9317: } else {
9318: my @responses = split(/:/,$reply);
9319: my $outcome = shift(@responses);
9320: foreach my $item (@responses) {
9321: my ($key,$value) = split(/=/,$item);
9322: $$photo{$key} = $value;
9323: }
9324: return $outcome;
9325: }
9326: return 'error';
9327: }
9328:
9329: sub auto_instcode_format {
9330: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
9331: $cat_order) = @_;
9332: my $courses = '';
9333: my @homeservers;
9334: if ($caller eq 'global') {
9335: my %servers = &get_servers($codedom,'library');
9336: foreach my $tryserver (keys(%servers)) {
9337: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
9338: push(@homeservers,$tryserver);
9339: }
9340: }
9341: } elsif ($caller eq 'requests') {
9342: if ($codedom =~ /^$match_domain$/) {
9343: my $chome = &domain($codedom,'primary');
9344: unless ($chome eq 'no_host') {
9345: push(@homeservers,$chome);
9346: }
9347: }
9348: } else {
9349: push(@homeservers,&homeserver($caller,$codedom));
9350: }
9351: foreach my $code (keys(%{$instcodes})) {
9352: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
9353: }
9354: chop($courses);
9355: my $ok_response = 0;
9356: my $response;
9357: while (@homeservers > 0 && $ok_response == 0) {
9358: my $server = shift(@homeservers);
9359: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
9360: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
9361: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
9362: split(/:/,$response);
9363: %{$codes} = (%{$codes},&str2hash($codes_str));
9364: push(@{$codetitles},&str2array($codetitles_str));
9365: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
9366: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
9367: $ok_response = 1;
9368: }
9369: }
9370: if ($ok_response) {
9371: return 'ok';
9372: } else {
9373: return $response;
9374: }
9375: }
9376:
9377: sub auto_instcode_defaults {
9378: my ($domain,$returnhash,$code_order) = @_;
9379: my @homeservers;
9380:
9381: my %servers = &get_servers($domain,'library');
9382: foreach my $tryserver (keys(%servers)) {
9383: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
9384: push(@homeservers,$tryserver);
9385: }
9386: }
9387:
9388: my $response;
9389: foreach my $server (@homeservers) {
9390: $response=&reply('autoinstcodedefaults:'.$domain,$server);
9391: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
9392:
9393: foreach my $pair (split(/\&/,$response)) {
9394: my ($name,$value)=split(/\=/,$pair);
9395: if ($name eq 'code_order') {
9396: @{$code_order} = split(/\&/,&unescape($value));
9397: } else {
9398: $returnhash->{&unescape($name)}=&unescape($value);
9399: }
9400: }
9401: return 'ok';
9402: }
9403:
9404: return $response;
9405: }
9406:
9407: sub auto_possible_instcodes {
9408: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
9409: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
9410: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
9411: return;
9412: }
9413: my (@homeservers,$uhome);
9414: if (defined(&domain($domain,'primary'))) {
9415: $uhome=&domain($domain,'primary');
9416: push(@homeservers,&domain($domain,'primary'));
9417: } else {
9418: my %servers = &get_servers($domain,'library');
9419: foreach my $tryserver (keys(%servers)) {
9420: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
9421: push(@homeservers,$tryserver);
9422: }
9423: }
9424: }
9425: my $response;
9426: foreach my $server (@homeservers) {
9427: $response=&reply('autopossibleinstcodes:'.$domain,$server);
9428: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
9429: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
9430: split(':',$response);
9431: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
9432: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
9433: foreach my $item (split('&',$cat_title)) {
9434: my ($name,$value)=split('=',$item);
9435: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
9436: }
9437: foreach my $item (split('&',$cat_order)) {
9438: my ($name,$value)=split('=',$item);
9439: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
9440: }
9441: return 'ok';
9442: }
9443: return $response;
9444: }
9445:
9446: sub auto_courserequest_checks {
9447: my ($dom) = @_;
9448: my ($homeserver,%validations);
9449: if ($dom =~ /^$match_domain$/) {
9450: $homeserver = &domain($dom,'primary');
9451: }
9452: unless ($homeserver eq 'no_host') {
9453: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
9454: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9455: my @items = split(/&/,$response);
9456: foreach my $item (@items) {
9457: my ($key,$value) = split('=',$item);
9458: $validations{&unescape($key)} = &thaw_unescape($value);
9459: }
9460: }
9461: }
9462: return %validations;
9463: }
9464:
9465: sub auto_courserequest_validation {
9466: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$custominfo) = @_;
9467: my ($homeserver,$response);
9468: if ($dom =~ /^$match_domain$/) {
9469: $homeserver = &domain($dom,'primary');
9470: }
9471: unless ($homeserver eq 'no_host') {
9472: my $customdata;
9473: if (ref($custominfo) eq 'HASH') {
9474: $customdata = &freeze_escape($custominfo);
9475: }
9476: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
9477: ':'.&escape($crstype).':'.&escape($inststatuslist).
9478: ':'.&escape($instcode).':'.&escape($instseclist).':'.
9479: $customdata,$homeserver));
9480: }
9481: return $response;
9482: }
9483:
9484: sub auto_validate_class_sec {
9485: my ($cdom,$cnum,$owners,$inst_class) = @_;
9486: my $homeserver = &homeserver($cnum,$cdom);
9487: my $ownerlist;
9488: if (ref($owners) eq 'ARRAY') {
9489: $ownerlist = join(',',@{$owners});
9490: } else {
9491: $ownerlist = $owners;
9492: }
9493: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
9494: &escape($ownerlist).':'.$cdom,$homeserver);
9495: return $response;
9496: }
9497:
9498: sub auto_validate_instclasses {
9499: my ($cdom,$cnum,$owners,$classesref) = @_;
9500: my ($homeserver,%validations);
9501: $homeserver = &homeserver($cnum,$cdom);
9502: unless ($homeserver eq 'no_host') {
9503: my $ownerlist;
9504: if (ref($owners) eq 'ARRAY') {
9505: $ownerlist = join(',',@{$owners});
9506: } else {
9507: $ownerlist = $owners;
9508: }
9509: if (ref($classesref) eq 'HASH') {
9510: my $classes = &freeze_escape($classesref);
9511: my $response=&reply('autovalidateinstclasses:'.&escape($ownerlist).
9512: ':'.$cdom.':'.$classes,$homeserver);
9513: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9514: my @items = split(/&/,$response);
9515: foreach my $item (@items) {
9516: my ($key,$value) = split('=',$item);
9517: $validations{&unescape($key)} = &thaw_unescape($value);
9518: }
9519: }
9520: }
9521: }
9522: return %validations;
9523: }
9524:
9525: sub auto_crsreq_update {
9526: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,
9527: $code,$accessstart,$accessend,$inbound) = @_;
9528: my ($homeserver,%crsreqresponse);
9529: if ($cdom =~ /^$match_domain$/) {
9530: $homeserver = &domain($cdom,'primary');
9531: }
9532: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
9533: my $info;
9534: if (ref($inbound) eq 'HASH') {
9535: $info = &freeze_escape($inbound);
9536: }
9537: my $response=&reply('autocrsrequpdate:'.$cdom.':'.$cnum.':'.&escape($crstype).
9538: ':'.&escape($action).':'.&escape($ownername).':'.
9539: &escape($ownerdomain).':'.&escape($fullname).':'.
9540: &escape($title).':'.&escape($code).':'.
9541: &escape($accessstart).':'.&escape($accessend).':'.$info,
9542: $homeserver);
9543: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9544: my @items = split(/&/,$response);
9545: foreach my $item (@items) {
9546: my ($key,$value) = split('=',$item);
9547: $crsreqresponse{&unescape($key)} = &thaw_unescape($value);
9548: }
9549: }
9550: }
9551: return \%crsreqresponse;
9552: }
9553:
9554: sub auto_export_grades {
9555: my ($cdom,$cnum,$inforef,$gradesref) = @_;
9556: my ($homeserver,%exportresponse);
9557: if ($cdom =~ /^$match_domain$/) {
9558: $homeserver = &domain($cdom,'primary');
9559: }
9560: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
9561: my $info;
9562: if (ref($inforef) eq 'HASH') {
9563: $info = &freeze_escape($inforef);
9564: }
9565: if (ref($gradesref) eq 'HASH') {
9566: my $grades = &freeze_escape($gradesref);
9567: my $response=&reply('encrypt:autoexportgrades:'.$cdom.':'.$cnum.':'.
9568: $info.':'.$grades,$homeserver);
9569: unless ($response =~ /(con_lost|error|no_such_host|refused|unknown_command)/) {
9570: my @items = split(/&/,$response);
9571: foreach my $item (@items) {
9572: my ($key,$value) = split('=',$item);
9573: $exportresponse{&unescape($key)} = &thaw_unescape($value);
9574: }
9575: }
9576: }
9577: }
9578: return \%exportresponse;
9579: }
9580:
9581: sub check_instcode_cloning {
9582: my ($codedefaults,$code_order,$cloner,$clonefromcode,$clonetocode) = @_;
9583: unless ((ref($codedefaults) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
9584: return;
9585: }
9586: my $canclone;
9587: if (@{$code_order} > 0) {
9588: my $instcoderegexp ='^';
9589: my @clonecodes = split(/\&/,$cloner);
9590: foreach my $item (@{$code_order}) {
9591: if (grep(/^\Q$item\E=/,@clonecodes)) {
9592: foreach my $pair (@clonecodes) {
9593: my ($key,$val) = split(/\=/,$pair,2);
9594: $val = &unescape($val);
9595: if ($key eq $item) {
9596: $instcoderegexp .= '('.$val.')';
9597: last;
9598: }
9599: }
9600: } else {
9601: $instcoderegexp .= $codedefaults->{$item};
9602: }
9603: }
9604: $instcoderegexp .= '$';
9605: my (@from,@to);
9606: eval {
9607: (@from) = ($clonefromcode =~ /$instcoderegexp/);
9608: (@to) = ($clonetocode =~ /$instcoderegexp/);
9609: };
9610: if ((@from > 0) && (@to > 0)) {
9611: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
9612: if (!@diffs) {
9613: $canclone = 1;
9614: }
9615: }
9616: }
9617: return $canclone;
9618: }
9619:
9620: sub default_instcode_cloning {
9621: my ($clonedom,$domdefclone,$clonefromcode,$clonetocode,$codedefaultsref,$codeorderref) = @_;
9622: my (%codedefaults,@code_order,$canclone);
9623: if ((ref($codedefaultsref) eq 'HASH') && (ref($codeorderref) eq 'ARRAY')) {
9624: %codedefaults = %{$codedefaultsref};
9625: @code_order = @{$codeorderref};
9626: } elsif ($clonedom) {
9627: &auto_instcode_defaults($clonedom,\%codedefaults,\@code_order);
9628: }
9629: if (($domdefclone) && (@code_order)) {
9630: my @clonecodes = split(/\+/,$domdefclone);
9631: my $instcoderegexp ='^';
9632: foreach my $item (@code_order) {
9633: if (grep(/^\Q$item\E$/,@clonecodes)) {
9634: $instcoderegexp .= '('.$codedefaults{$item}.')';
9635: } else {
9636: $instcoderegexp .= $codedefaults{$item};
9637: }
9638: }
9639: $instcoderegexp .= '$';
9640: my (@from,@to);
9641: eval {
9642: (@from) = ($clonefromcode =~ /$instcoderegexp/);
9643: (@to) = ($clonetocode =~ /$instcoderegexp/);
9644: };
9645: if ((@from > 0) && (@to > 0)) {
9646: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
9647: if (!@diffs) {
9648: $canclone = 1;
9649: }
9650: }
9651: }
9652: return $canclone;
9653: }
9654:
9655: # ------------------------------------------------------- Course Group routines
9656:
9657: sub get_coursegroups {
9658: my ($cdom,$cnum,$group,$namespace) = @_;
9659: return(&dump($namespace,$cdom,$cnum,$group));
9660: }
9661:
9662: sub modify_coursegroup {
9663: my ($cdom,$cnum,$groupsettings) = @_;
9664: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
9665: }
9666:
9667: sub toggle_coursegroup_status {
9668: my ($cdom,$cnum,$group,$action) = @_;
9669: my ($from_namespace,$to_namespace);
9670: if ($action eq 'delete') {
9671: $from_namespace = 'coursegroups';
9672: $to_namespace = 'deleted_groups';
9673: } else {
9674: $from_namespace = 'deleted_groups';
9675: $to_namespace = 'coursegroups';
9676: }
9677: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
9678: if (my $tmp = &error(%curr_group)) {
9679: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
9680: return ('read error',$tmp);
9681: } else {
9682: my %savedsettings = %curr_group;
9683: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
9684: my $deloutcome;
9685: if ($result eq 'ok') {
9686: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
9687: } else {
9688: return ('write error',$result);
9689: }
9690: if ($deloutcome eq 'ok') {
9691: return 'ok';
9692: } else {
9693: return ('delete error',$deloutcome);
9694: }
9695: }
9696: }
9697:
9698: sub modify_group_roles {
9699: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
9700: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
9701: my $role = 'gr/'.&escape($userprivs);
9702: my ($uname,$udom) = split(/:/,$user);
9703: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
9704: if ($result eq 'ok') {
9705: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
9706: }
9707: return $result;
9708: }
9709:
9710: sub modify_coursegroup_membership {
9711: my ($cdom,$cnum,$membership) = @_;
9712: my $result = &put('groupmembership',$membership,$cdom,$cnum);
9713: return $result;
9714: }
9715:
9716: sub get_active_groups {
9717: my ($udom,$uname,$cdom,$cnum) = @_;
9718: my $now = time;
9719: my %groups = ();
9720: foreach my $key (keys(%env)) {
9721: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
9722: my ($start,$end) = split(/\./,$env{$key});
9723: if (($end!=0) && ($end<$now)) { next; }
9724: if (($start!=0) && ($start>$now)) { next; }
9725: if ($1 eq $cdom && $2 eq $cnum) {
9726: $groups{$3} = $env{$key} ;
9727: }
9728: }
9729: }
9730: return %groups;
9731: }
9732:
9733: sub get_group_membership {
9734: my ($cdom,$cnum,$group) = @_;
9735: return(&dump('groupmembership',$cdom,$cnum,$group));
9736: }
9737:
9738: sub get_users_groups {
9739: my ($udom,$uname,$courseid) = @_;
9740: my @usersgroups;
9741: my $cachetime=1800;
9742:
9743: my $hashid="$udom:$uname:$courseid";
9744: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
9745: if (defined($cached)) {
9746: @usersgroups = split(/:/,$grouplist);
9747: } else {
9748: $grouplist = '';
9749: my $courseurl = &courseid_to_courseurl($courseid);
9750: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
9751: my $access_end = $env{'course.'.$courseid.
9752: '.default_enrollment_end_date'};
9753: my $now = time;
9754: foreach my $key (keys(%roleshash)) {
9755: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
9756: my $group = $1;
9757: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
9758: my $start = $2;
9759: my $end = $1;
9760: if ($start == -1) { next; } # deleted from group
9761: if (($start!=0) && ($start>$now)) { next; }
9762: if (($end!=0) && ($end<$now)) {
9763: if ($access_end && $access_end < $now) {
9764: if ($access_end - $end < 86400) {
9765: push(@usersgroups,$group);
9766: }
9767: }
9768: next;
9769: }
9770: push(@usersgroups,$group);
9771: }
9772: }
9773: }
9774: @usersgroups = &sort_course_groups($courseid,@usersgroups);
9775: $grouplist = join(':',@usersgroups);
9776: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
9777: }
9778: return @usersgroups;
9779: }
9780:
9781: sub devalidate_getgroups_cache {
9782: my ($udom,$uname,$cdom,$cnum)=@_;
9783: my $courseid = $cdom.'_'.$cnum;
9784:
9785: my $hashid="$udom:$uname:$courseid";
9786: &devalidate_cache_new('getgroups',$hashid);
9787: }
9788:
9789: # ------------------------------------------------------------------ Plain Text
9790:
9791: sub plaintext {
9792: my ($short,$type,$cid,$forcedefault) = @_;
9793: if ($short =~ m{^cr/}) {
9794: return (split('/',$short))[-1];
9795: }
9796: if (!defined($cid)) {
9797: $cid = $env{'request.course.id'};
9798: }
9799: my %rolenames = (
9800: Course => 'std',
9801: Community => 'alt1',
9802: Placement => 'std',
9803: );
9804: if ($cid ne '') {
9805: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
9806: unless ($forcedefault) {
9807: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
9808: &Apache::lonlocal::mt_escape(\$roletext);
9809: return &Apache::lonlocal::mt($roletext);
9810: }
9811: }
9812: }
9813: if ((defined($type)) && (defined($rolenames{$type})) &&
9814: (defined($rolenames{$type})) &&
9815: (defined($prp{$short}{$rolenames{$type}}))) {
9816: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
9817: } elsif ($cid ne '') {
9818: my $crstype = $env{'course.'.$cid.'.type'};
9819: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
9820: (defined($prp{$short}{$rolenames{$crstype}}))) {
9821: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
9822: }
9823: }
9824: return &Apache::lonlocal::mt($prp{$short}{'std'});
9825: }
9826:
9827: # ----------------------------------------------------------------- Assign Role
9828:
9829: sub assignrole {
9830: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
9831: $context)=@_;
9832: my $mrole;
9833: if ($role =~ /^cr\//) {
9834: my $cwosec=$url;
9835: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
9836: unless (&allowed('ccr',$cwosec)) {
9837: my $refused = 1;
9838: if ($context eq 'requestcourses') {
9839: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
9840: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
9841: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
9842: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
9843: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9844: if ($crsenv{'internal.courseowner'} eq
9845: $env{'user.name'}.':'.$env{'user.domain'}) {
9846: $refused = '';
9847: }
9848: }
9849: }
9850: }
9851: }
9852: if ($refused) {
9853: &logthis('Refused custom assignrole: '.
9854: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
9855: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
9856: return 'refused';
9857: }
9858: }
9859: $mrole='cr';
9860: } elsif ($role =~ /^gr\//) {
9861: my $cwogrp=$url;
9862: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
9863: unless (&allowed('mdg',$cwogrp)) {
9864: &logthis('Refused group assignrole: '.
9865: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
9866: $env{'user.name'}.' at '.$env{'user.domain'});
9867: return 'refused';
9868: }
9869: $mrole='gr';
9870: } else {
9871: my $cwosec=$url;
9872: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
9873: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
9874: my $refused;
9875: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
9876: if (!(&allowed('c'.$role,$url))) {
9877: $refused = 1;
9878: }
9879: } else {
9880: $refused = 1;
9881: }
9882: if ($refused) {
9883: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
9884: if (!$selfenroll && (($context eq 'course') || ($context eq 'ltienroll' && $env{'request.lti.login'}))) {
9885: my %crsenv;
9886: if ($role eq 'cc' || $role eq 'co') {
9887: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9888: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
9889: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
9890: if ($crsenv{'internal.courseowner'} eq
9891: $env{'user.name'}.':'.$env{'user.domain'}) {
9892: $refused = '';
9893: }
9894: }
9895: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
9896: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
9897: if ($crsenv{'internal.courseowner'} eq
9898: $env{'user.name'}.':'.$env{'user.domain'}) {
9899: $refused = '';
9900: }
9901: }
9902: }
9903: }
9904: } elsif (($selfenroll == 1) && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
9905: if ($role eq 'st') {
9906: $refused = '';
9907: } elsif (($context eq 'ltienroll') && ($env{'request.lti.login'})) {
9908: $refused = '';
9909: }
9910: } elsif ($context eq 'requestcourses') {
9911: my @possroles = ('st','ta','ep','in','cc','co');
9912: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
9913: my $wrongcc;
9914: if ($cnum =~ /^$match_community$/) {
9915: $wrongcc = 1 if ($role eq 'cc');
9916: } else {
9917: $wrongcc = 1 if ($role eq 'co');
9918: }
9919: unless ($wrongcc) {
9920: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9921: if ($crsenv{'internal.courseowner'} eq
9922: $env{'user.name'}.':'.$env{'user.domain'}) {
9923: $refused = '';
9924: }
9925: }
9926: }
9927: } elsif ($context eq 'requestauthor') {
9928: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
9929: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
9930: if ($env{'environment.requestauthor'} eq 'automatic') {
9931: $refused = '';
9932: } else {
9933: my %domdefaults = &get_domain_defaults($udom);
9934: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
9935: my $checkbystatus;
9936: if ($env{'user.adv'}) {
9937: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
9938: if ($disposition eq 'automatic') {
9939: $refused = '';
9940: } elsif ($disposition eq '') {
9941: $checkbystatus = 1;
9942: }
9943: } else {
9944: $checkbystatus = 1;
9945: }
9946: if ($checkbystatus) {
9947: if ($env{'environment.inststatus'}) {
9948: my @inststatuses = split(/,/,$env{'environment.inststatus'});
9949: foreach my $type (@inststatuses) {
9950: if (($type ne '') &&
9951: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
9952: $refused = '';
9953: }
9954: }
9955: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
9956: $refused = '';
9957: }
9958: }
9959: }
9960: }
9961: }
9962: }
9963: if ($refused) {
9964: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
9965: ' '.$role.' '.$end.' '.$start.' by '.
9966: $env{'user.name'}.' at '.$env{'user.domain'});
9967: return 'refused';
9968: }
9969: }
9970: } elsif ($role eq 'au') {
9971: if ($url ne '/'.$udom.'/') {
9972: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
9973: ' to assign author role for '.$uname.':'.$udom.
9974: ' in domain: '.$url.' refused (wrong domain).');
9975: return 'refused';
9976: }
9977: }
9978: $mrole=$role;
9979: }
9980: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
9981: "$udom:$uname:$url".'_'."$mrole=$role";
9982: if ($end) { $command.='_'.$end; }
9983: if ($start) {
9984: if ($end) {
9985: $command.='_'.$start;
9986: } else {
9987: $command.='_0_'.$start;
9988: }
9989: }
9990: my $origstart = $start;
9991: my $origend = $end;
9992: my $delflag;
9993: # actually delete
9994: if ($deleteflag) {
9995: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
9996: # modify command to delete the role
9997: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
9998: "$udom:$uname:$url".'_'."$mrole";
9999: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
10000: # set start and finish to negative values for userrolelog
10001: $start=-1;
10002: $end=-1;
10003: $delflag = 1;
10004: }
10005: }
10006: # send command
10007: my $answer=&reply($command,&homeserver($uname,$udom));
10008: # log new user role if status is ok
10009: if ($answer eq 'ok') {
10010: &userrolelog($role,$uname,$udom,$url,$start,$end);
10011: if (($role eq 'cc') || ($role eq 'in') ||
10012: ($role eq 'ep') || ($role eq 'ad') ||
10013: ($role eq 'ta') || ($role eq 'st') ||
10014: ($role=~/^cr/) || ($role eq 'gr') ||
10015: ($role eq 'co')) {
10016: # for course roles, perform group memberships changes triggered by role change.
10017: unless ($role =~ /^gr/) {
10018: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
10019: $origstart,$selfenroll,$context);
10020: }
10021: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
10022: $selfenroll,$context);
10023: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
10024: ($role eq 'au') || ($role eq 'dc') || ($role eq 'dh') ||
10025: ($role eq 'da')) {
10026: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
10027: $context);
10028: } elsif (($role eq 'ca') || ($role eq 'aa')) {
10029: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
10030: $context);
10031: }
10032: if ($role eq 'cc') {
10033: &autoupdate_coowners($url,$end,$start,$uname,$udom);
10034: }
10035: }
10036: return $answer;
10037: }
10038:
10039: sub autoupdate_coowners {
10040: my ($url,$end,$start,$uname,$udom) = @_;
10041: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
10042: if (($cdom ne '') && ($cnum ne '')) {
10043: my $now = time;
10044: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
10045: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
10046: my %coursehash = &coursedescription($cdom.'_'.$cnum);
10047: my $instcode = $coursehash{'internal.coursecode'};
10048: if ($instcode ne '') {
10049: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
10050: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
10051: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
10052: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
10053: if ($result eq 'valid') {
10054: if ($coursehash{'internal.co-owners'}) {
10055: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
10056: push(@newcoowners,$coowner);
10057: }
10058: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
10059: push(@newcoowners,$uname.':'.$udom);
10060: }
10061: @newcoowners = sort(@newcoowners);
10062: } else {
10063: push(@newcoowners,$uname.':'.$udom);
10064: }
10065: } else {
10066: if ($coursehash{'internal.co-owners'}) {
10067: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
10068: unless ($coowner eq $uname.':'.$udom) {
10069: push(@newcoowners,$coowner);
10070: }
10071: }
10072: unless (@newcoowners > 0) {
10073: $delcoowners = 1;
10074: $coowners = '';
10075: }
10076: }
10077: }
10078: if (@newcoowners || $delcoowners) {
10079: &store_coowners($cdom,$cnum,$coursehash{'home'},
10080: $delcoowners,@newcoowners);
10081: }
10082: }
10083: }
10084: }
10085: }
10086: }
10087: }
10088:
10089: sub store_coowners {
10090: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
10091: my $cid = $cdom.'_'.$cnum;
10092: my ($coowners,$delresult,$putresult);
10093: if (@newcoowners) {
10094: $coowners = join(',',@newcoowners);
10095: my %coownershash = (
10096: 'internal.co-owners' => $coowners,
10097: );
10098: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
10099: if ($putresult eq 'ok') {
10100: if ($env{'course.'.$cid.'.num'} eq $cnum) {
10101: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
10102: }
10103: }
10104: }
10105: if ($delcoowners) {
10106: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
10107: if ($delresult eq 'ok') {
10108: if ($env{'course.'.$cid.'.internal.co-owners'}) {
10109: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
10110: }
10111: }
10112: }
10113: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
10114: my %crsinfo =
10115: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
10116: if (ref($crsinfo{$cid}) eq 'HASH') {
10117: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
10118: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
10119: }
10120: }
10121: }
10122:
10123: # -------------------------------------------------- Modify user authentication
10124: # Overrides without validation
10125:
10126: sub modifyuserauth {
10127: my ($udom,$uname,$umode,$upass)=@_;
10128: my $uhome=&homeserver($uname,$udom);
10129: my $allowed;
10130: if (&allowed('mau',$udom)) {
10131: $allowed = 1;
10132: } elsif (($umode eq 'internal') && ($udom eq $env{'user.domain'}) &&
10133: ($env{'request.course.id'}) && (&allowed('mip',$env{'request.course.id'})) &&
10134: (!$env{'course.'.$env{'request.course.id'}.'.internal.nopasswdchg'})) {
10135: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
10136: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
10137: if (($cdom ne '') && ($cnum ne '')) {
10138: my $is_owner = &is_course_owner($cdom,$cnum);
10139: if ($is_owner) {
10140: $allowed = 1;
10141: }
10142: }
10143: }
10144: unless ($allowed) { return 'refused'; }
10145: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
10146: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
10147: ' in domain '.$env{'request.role.domain'});
10148: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
10149: &escape($upass),$uhome);
10150: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
10151: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
10152: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
10153: &log($udom,,$uname,$uhome,
10154: 'Authentication changed by '.$env{'user.domain'}.', '.
10155: $env{'user.name'}.', '.$umode.
10156: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
10157: unless ($reply eq 'ok') {
10158: &logthis('Authentication mode error: '.$reply);
10159: return 'error: '.$reply;
10160: }
10161: return 'ok';
10162: }
10163:
10164: # --------------------------------------------------------------- Modify a user
10165:
10166: sub modifyuser {
10167: my ($udom, $uname, $uid,
10168: $umode, $upass, $first,
10169: $middle, $last, $gene,
10170: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
10171: $udom= &LONCAPA::clean_domain($udom);
10172: $uname=&LONCAPA::clean_username($uname);
10173: my $showcandelete = 'none';
10174: if (ref($candelete) eq 'ARRAY') {
10175: if (@{$candelete} > 0) {
10176: $showcandelete = join(', ',@{$candelete});
10177: }
10178: }
10179: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
10180: $umode.', '.$first.', '.$middle.', '.
10181: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
10182: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
10183: ' desiredhome not specified').
10184: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
10185: ' in domain '.$env{'request.role.domain'});
10186: my $uhome=&homeserver($uname,$udom,'true');
10187: my $newuser;
10188: if ($uhome eq 'no_host') {
10189: $newuser = 1;
10190: unless (($umode && ($upass ne '')) || ($umode eq 'localauth') ||
10191: ($umode eq 'lti')) {
10192: return 'error: more information needed to create new user';
10193: }
10194: }
10195: # ----------------------------------------------------------------- Create User
10196: if (($uhome eq 'no_host') &&
10197: (($umode && $upass) || ($umode eq 'localauth') || ($umode eq 'lti'))) {
10198: my $unhome='';
10199: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
10200: $unhome = $desiredhome;
10201: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
10202: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
10203: } else { # load balancing routine for determining $unhome
10204: my $loadm=10000000;
10205: my %servers = &get_servers($udom,'library');
10206: foreach my $tryserver (keys(%servers)) {
10207: my $answer=reply('load',$tryserver);
10208: if (($answer=~/\d+/) && ($answer<$loadm)) {
10209: $loadm=$answer;
10210: $unhome=$tryserver;
10211: }
10212: }
10213: }
10214: if (($unhome eq '') || ($unhome eq 'no_host')) {
10215: return 'error: unable to find a home server for '.$uname.
10216: ' in domain '.$udom;
10217: }
10218: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
10219: &escape($upass),$unhome);
10220: unless ($reply eq 'ok') {
10221: return 'error: '.$reply;
10222: }
10223: $uhome=&homeserver($uname,$udom,'true');
10224: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
10225: return 'error: unable verify users home machine.';
10226: }
10227: } # End of creation of new user
10228: # ---------------------------------------------------------------------- Add ID
10229: if ($uid) {
10230: $uid=~tr/A-Z/a-z/;
10231: my %uidhash=&idrget($udom,$uname);
10232: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
10233: && (!$forceid)) {
10234: unless ($uid eq $uidhash{$uname}) {
10235: return 'error: user id "'.$uid.'" does not match '.
10236: 'current user id "'.$uidhash{$uname}.'".';
10237: }
10238: } else {
10239: &idput($udom,{$uname => $uid},$uhome,'ids');
10240: }
10241: }
10242: # -------------------------------------------------------------- Add names, etc
10243: my @tmp=&get('environment',
10244: ['firstname','middlename','lastname','generation','id',
10245: 'permanentemail','inststatus'],
10246: $udom,$uname);
10247: my (%names,%oldnames);
10248: if ($tmp[0] =~ m/^error:.*/) {
10249: %names=();
10250: } else {
10251: %names = @tmp;
10252: %oldnames = %names;
10253: }
10254: #
10255: # If name, email and/or uid are blank (e.g., because an uploaded file
10256: # of users did not contain them), do not overwrite existing values
10257: # unless field is in $candelete array ref.
10258: #
10259:
10260: my @fields = ('firstname','middlename','lastname','generation',
10261: 'permanentemail','id');
10262: my %newvalues;
10263: if (ref($candelete) eq 'ARRAY') {
10264: foreach my $field (@fields) {
10265: if (grep(/^\Q$field\E$/,@{$candelete})) {
10266: if ($field eq 'firstname') {
10267: $names{$field} = $first;
10268: } elsif ($field eq 'middlename') {
10269: $names{$field} = $middle;
10270: } elsif ($field eq 'lastname') {
10271: $names{$field} = $last;
10272: } elsif ($field eq 'generation') {
10273: $names{$field} = $gene;
10274: } elsif ($field eq 'permanentemail') {
10275: $names{$field} = $email;
10276: } elsif ($field eq 'id') {
10277: $names{$field} = $uid;
10278: }
10279: }
10280: }
10281: }
10282: if ($first) { $names{'firstname'} = $first; }
10283: if (defined($middle)) { $names{'middlename'} = $middle; }
10284: if ($last) { $names{'lastname'} = $last; }
10285: if (defined($gene)) { $names{'generation'} = $gene; }
10286: if ($email) {
10287: $email=~s/[^\w\@\.\-\,]//gs;
10288: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
10289: }
10290: if ($uid) { $names{'id'} = $uid; }
10291: if (defined($inststatus)) {
10292: $names{'inststatus'} = '';
10293: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
10294: if (ref($usertypes) eq 'HASH') {
10295: my @okstatuses;
10296: foreach my $item (split(/:/,$inststatus)) {
10297: if (defined($usertypes->{$item})) {
10298: push(@okstatuses,$item);
10299: }
10300: }
10301: if (@okstatuses) {
10302: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
10303: }
10304: }
10305: }
10306: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
10307: $umode.', '.$first.', '.$middle.', '.
10308: $last.', '.$gene.', '.$email.', '.$inststatus;
10309: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
10310: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
10311: } else {
10312: $logmsg .= ' during self creation';
10313: }
10314: my $changed;
10315: if ($newuser) {
10316: $changed = 1;
10317: } else {
10318: foreach my $field (@fields) {
10319: if ($names{$field} ne $oldnames{$field}) {
10320: $changed = 1;
10321: last;
10322: }
10323: }
10324: }
10325: unless ($changed) {
10326: $logmsg = 'No changes in user information needed for: '.$logmsg;
10327: &logthis($logmsg);
10328: return 'ok';
10329: }
10330: my $reply = &put('environment', \%names, $udom,$uname);
10331: if ($reply ne 'ok') {
10332: return 'error: '.$reply;
10333: }
10334: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
10335: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
10336: }
10337: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
10338: &devalidate_cache_new('namescache',$uname.':'.$udom);
10339: $logmsg = 'Success modifying user '.$logmsg;
10340: &logthis($logmsg);
10341: return 'ok';
10342: }
10343:
10344: # -------------------------------------------------------------- Modify student
10345:
10346: sub modifystudent {
10347: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
10348: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
10349: $selfenroll,$context,$inststatus,$credits,$instsec)=@_;
10350: if (!$cid) {
10351: unless ($cid=$env{'request.course.id'}) {
10352: return 'not_in_class';
10353: }
10354: }
10355: # --------------------------------------------------------------- Make the user
10356: my $reply=&modifyuser
10357: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
10358: $desiredhome,$email,$inststatus);
10359: unless ($reply eq 'ok') { return $reply; }
10360: # This will cause &modify_student_enrollment to get the uid from the
10361: # student's environment
10362: $uid = undef if (!$forceid);
10363: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
10364: $gene,$usec,$end,$start,$type,$locktype,
10365: $cid,$selfenroll,$context,$credits,$instsec);
10366: return $reply;
10367: }
10368:
10369: sub modify_student_enrollment {
10370: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
10371: $locktype,$cid,$selfenroll,$context,$credits,$instsec) = @_;
10372: my ($cdom,$cnum,$chome);
10373: if (!$cid) {
10374: unless ($cid=$env{'request.course.id'}) {
10375: return 'not_in_class';
10376: }
10377: $cdom=$env{'course.'.$cid.'.domain'};
10378: $cnum=$env{'course.'.$cid.'.num'};
10379: } else {
10380: ($cdom,$cnum)=split(/_/,$cid);
10381: }
10382: $chome=$env{'course.'.$cid.'.home'};
10383: if (!$chome) {
10384: $chome=&homeserver($cnum,$cdom);
10385: }
10386: if (!$chome) { return 'unknown_course'; }
10387: # Make sure the user exists
10388: my $uhome=&homeserver($uname,$udom);
10389: if (($uhome eq '') || ($uhome eq 'no_host')) {
10390: return 'error: no such user';
10391: }
10392: # Get student data if we were not given enough information
10393: if (!defined($first) || $first eq '' ||
10394: !defined($last) || $last eq '' ||
10395: !defined($uid) || $uid eq '' ||
10396: !defined($middle) || $middle eq '' ||
10397: !defined($gene) || $gene eq '') {
10398: # They did not supply us with enough data to enroll the student, so
10399: # we need to pick up more information.
10400: my %tmp = &get('environment',
10401: ['firstname','middlename','lastname', 'generation','id']
10402: ,$udom,$uname);
10403:
10404: #foreach my $key (keys(%tmp)) {
10405: # &logthis("key $key = ".$tmp{$key});
10406: #}
10407: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
10408: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
10409: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
10410: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
10411: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
10412: }
10413: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
10414: my $user = "$uname:$udom";
10415: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
10416: my $reply=cput('classlist',
10417: {$user =>
10418: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits,$instsec) },
10419: $cdom,$cnum);
10420: if (($reply eq 'ok') || ($reply eq 'delayed')) {
10421: &devalidate_getsection_cache($udom,$uname,$cid);
10422: } else {
10423: return 'error: '.$reply;
10424: }
10425: # Add student role to user
10426: my $uurl='/'.$cid;
10427: $uurl=~s/\_/\//g;
10428: if ($usec) {
10429: $uurl.='/'.$usec;
10430: }
10431: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
10432: $selfenroll,$context);
10433: if ($result ne 'ok') {
10434: if ($old_entry{$user} ne '') {
10435: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
10436: } else {
10437: $reply = &del('classlist',[$user],$cdom,$cnum);
10438: }
10439: }
10440: return $result;
10441: }
10442:
10443: sub format_name {
10444: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
10445: my $name;
10446: if ($first ne 'lastname') {
10447: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
10448: } else {
10449: if ($lastname=~/\S/) {
10450: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
10451: $name=~s/\s+,/,/;
10452: } else {
10453: $name.= $firstname.' '.$middlename.' '.$generation;
10454: }
10455: }
10456: $name=~s/^\s+//;
10457: $name=~s/\s+$//;
10458: $name=~s/\s+/ /g;
10459: return $name;
10460: }
10461:
10462: # ------------------------------------------------- Write to course preferences
10463:
10464: sub writecoursepref {
10465: my ($courseid,%prefs)=@_;
10466: $courseid=~s/^\///;
10467: $courseid=~s/\_/\//g;
10468: my ($cdomain,$cnum)=split(/\//,$courseid);
10469: my $chome=homeserver($cnum,$cdomain);
10470: if (($chome eq '') || ($chome eq 'no_host')) {
10471: return 'error: no such course';
10472: }
10473: my $cstring='';
10474: foreach my $pref (keys(%prefs)) {
10475: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
10476: }
10477: $cstring=~s/\&$//;
10478: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
10479: }
10480:
10481: # ---------------------------------------------------------- Make/modify course
10482:
10483: sub createcourse {
10484: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
10485: $course_owner,$crstype,$cnum,$context,$category)=@_;
10486: $url=&declutter($url);
10487: my $cid='';
10488: if ($context eq 'requestcourses') {
10489: my $can_create = 0;
10490: my ($ownername,$ownerdom) = split(':',$course_owner);
10491: if ($udom eq $ownerdom) {
10492: if (&usertools_access($ownername,$ownerdom,$category,undef,
10493: $context)) {
10494: $can_create = 1;
10495: }
10496: } else {
10497: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
10498: $category);
10499: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
10500: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
10501: if (@curr > 0) {
10502: my @options = qw(approval validate autolimit);
10503: my $optregex = join('|',@options);
10504: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
10505: $can_create = 1;
10506: }
10507: }
10508: }
10509: }
10510: if ($can_create) {
10511: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
10512: unless (&allowed('ccc',$udom)) {
10513: return 'refused';
10514: }
10515: }
10516: } else {
10517: return 'refused';
10518: }
10519: } elsif (!&allowed('ccc',$udom)) {
10520: return 'refused';
10521: }
10522: # --------------------------------------------------------------- Get Unique ID
10523: my $uname;
10524: if ($cnum =~ /^$match_courseid$/) {
10525: my $chome=&homeserver($cnum,$udom,'true');
10526: if (($chome eq '') || ($chome eq 'no_host')) {
10527: $uname = $cnum;
10528: } else {
10529: $uname = &generate_coursenum($udom,$crstype);
10530: }
10531: } else {
10532: $uname = &generate_coursenum($udom,$crstype);
10533: }
10534: return $uname if ($uname =~ /^error/);
10535: # -------------------------------------------------- Check supplied server name
10536: if (!defined($course_server)) {
10537: if (defined(&domain($udom,'primary'))) {
10538: $course_server = &domain($udom,'primary');
10539: } else {
10540: $course_server = $env{'user.home'};
10541: }
10542: }
10543: my %host_servers =
10544: &Apache::lonnet::get_servers($udom,'library');
10545: unless ($host_servers{$course_server}) {
10546: return 'error: invalid home server for course: '.$course_server;
10547: }
10548: # ------------------------------------------------------------- Make the course
10549: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
10550: $course_server);
10551: unless ($reply eq 'ok') { return 'error: '.$reply; }
10552: my $uhome=&homeserver($uname,$udom,'true');
10553: if (($uhome eq '') || ($uhome eq 'no_host')) {
10554: return 'error: no such course';
10555: }
10556: # ----------------------------------------------------------------- Course made
10557: # log existence
10558: my $now = time;
10559: my $newcourse = {
10560: $udom.'_'.$uname => {
10561: description => $description,
10562: inst_code => $inst_code,
10563: owner => $course_owner,
10564: type => $crstype,
10565: creator => $env{'user.name'}.':'.
10566: $env{'user.domain'},
10567: created => $now,
10568: context => $context,
10569: },
10570: };
10571: &courseidput($udom,$newcourse,$uhome,'notime');
10572: # set toplevel url
10573: my $topurl=$url;
10574: unless ($nonstandard) {
10575: # ------------------------------------------ For standard courses, make top url
10576: my $mapurl=&clutter($url);
10577: if ($mapurl eq '/res/') { $mapurl=''; }
10578: $env{'form.initmap'}=(<<ENDINITMAP);
10579: <map>
10580: <resource id="1" type="start"></resource>
10581: <resource id="2" src="$mapurl"></resource>
10582: <resource id="3" type="finish"></resource>
10583: <link index="1" from="1" to="2"></link>
10584: <link index="2" from="2" to="3"></link>
10585: </map>
10586: ENDINITMAP
10587: $topurl=&declutter(
10588: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
10589: );
10590: }
10591: # ----------------------------------------------------------- Write preferences
10592: &writecoursepref($udom.'_'.$uname,
10593: ('description' => $description,
10594: 'url' => $topurl,
10595: 'internal.creator' => $env{'user.name'}.':'.
10596: $env{'user.domain'},
10597: 'internal.created' => $now,
10598: 'internal.creationcontext' => $context)
10599: );
10600: return '/'.$udom.'/'.$uname;
10601: }
10602:
10603: # ------------------------------------------------------------------- Create ID
10604: sub generate_coursenum {
10605: my ($udom,$crstype) = @_;
10606: my $domdesc = &domain($udom);
10607: return 'error: invalid domain' if ($domdesc eq '');
10608: my $first;
10609: if ($crstype eq 'Community') {
10610: $first = '0';
10611: } else {
10612: $first = int(1+rand(9));
10613: }
10614: my $uname=$first.
10615: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
10616: substr($$.time,0,5).unpack("H8",pack("I32",time)).
10617: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
10618: # ----------------------------------------------- Make sure that does not exist
10619: my $uhome=&homeserver($uname,$udom,'true');
10620: unless (($uhome eq '') || ($uhome eq 'no_host')) {
10621: if ($crstype eq 'Community') {
10622: $first = '0';
10623: } else {
10624: $first = int(1+rand(9));
10625: }
10626: $uname=$first.
10627: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
10628: substr($$.time,0,5).unpack("H8",pack("I32",time)).
10629: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
10630: $uhome=&homeserver($uname,$udom,'true');
10631: unless (($uhome eq '') || ($uhome eq 'no_host')) {
10632: return 'error: unable to generate unique course-ID';
10633: }
10634: }
10635: return $uname;
10636: }
10637:
10638: sub is_course {
10639: my ($cdom, $cnum) = scalar(@_) == 1 ?
10640: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
10641:
10642: return unless (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/));
10643: my $uhome=&homeserver($cnum,$cdom);
10644: my $iscourse;
10645: if (grep { $_ eq $uhome } current_machine_ids()) {
10646: $iscourse = &LONCAPA::Lond::is_course($cdom,$cnum);
10647: } else {
10648: my $hashid = $cdom.':'.$cnum;
10649: ($iscourse,my $cached) = &is_cached_new('iscourse',$hashid);
10650: unless (defined($cached)) {
10651: my %courses = &courseiddump($cdom, '.', 1, '.', '.',
10652: $cnum,undef,undef,'.');
10653: $iscourse = 0;
10654: if (exists($courses{$cdom.'_'.$cnum})) {
10655: $iscourse = 1;
10656: }
10657: &do_cache_new('iscourse',$hashid,$iscourse,3600);
10658: }
10659: }
10660: return unless ($iscourse);
10661: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
10662: }
10663:
10664: sub store_userdata {
10665: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
10666: my $result;
10667: if ($datakey ne '') {
10668: if (ref($storehash) eq 'HASH') {
10669: if ($udom eq '' || $uname eq '') {
10670: $udom = $env{'user.domain'};
10671: $uname = $env{'user.name'};
10672: }
10673: my $uhome=&homeserver($uname,$udom);
10674: if (($uhome eq '') || ($uhome eq 'no_host')) {
10675: $result = 'error: no_host';
10676: } else {
10677: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
10678: $storehash->{'host'} = $perlvar{'lonHostID'};
10679:
10680: my $namevalue='';
10681: foreach my $key (keys(%{$storehash})) {
10682: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
10683: }
10684: $namevalue=~s/\&$//;
10685: unless ($namespace eq 'courserequests') {
10686: $datakey = &escape($datakey);
10687: }
10688: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
10689: $namevalue,$uhome);
10690: }
10691: } else {
10692: $result = 'error: data to store was not a hash reference';
10693: }
10694: } else {
10695: $result= 'error: invalid requestkey';
10696: }
10697: return $result;
10698: }
10699:
10700: # ---------------------------------------------------------- Assign Custom Role
10701:
10702: sub assigncustomrole {
10703: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
10704: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
10705: $end,$start,$deleteflag,$selfenroll,$context);
10706: }
10707:
10708: # ----------------------------------------------------------------- Revoke Role
10709:
10710: sub revokerole {
10711: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
10712: my $now=time;
10713: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
10714: }
10715:
10716: # ---------------------------------------------------------- Revoke Custom Role
10717:
10718: sub revokecustomrole {
10719: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
10720: my $now=time;
10721: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
10722: $deleteflag,$selfenroll,$context);
10723: }
10724:
10725: # ------------------------------------------------------------ Disk usage
10726: sub diskusage {
10727: my ($udom,$uname,$directorypath,$getpropath)=@_;
10728: $directorypath =~ s/\/$//;
10729: my $listing=&reply('du2:'.&escape($directorypath).':'
10730: .&escape($getpropath).':'.&escape($uname).':'
10731: .&escape($udom),homeserver($uname,$udom));
10732: if ($listing eq 'unknown_cmd') {
10733: if ($getpropath) {
10734: $directorypath = &propath($udom,$uname).'/'.$directorypath;
10735: }
10736: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
10737: }
10738: return $listing;
10739: }
10740:
10741: sub is_locked {
10742: my ($file_name, $domain, $user, $which) = @_;
10743: my @check;
10744: my $is_locked;
10745: push (@check,$file_name);
10746: my %locked = &get('file_permissions',\@check,
10747: $env{'user.domain'},$env{'user.name'});
10748: my ($tmp)=keys(%locked);
10749: if ($tmp=~/^error:/) { undef(%locked); }
10750:
10751: if (ref($locked{$file_name}) eq 'ARRAY') {
10752: $is_locked = 'false';
10753: foreach my $entry (@{$locked{$file_name}}) {
10754: if (ref($entry) eq 'ARRAY') {
10755: $is_locked = 'true';
10756: if (ref($which) eq 'ARRAY') {
10757: push(@{$which},$entry);
10758: } else {
10759: last;
10760: }
10761: }
10762: }
10763: } else {
10764: $is_locked = 'false';
10765: }
10766: return $is_locked;
10767: }
10768:
10769: sub declutter_portfile {
10770: my ($file) = @_;
10771: $file =~ s{^(/portfolio/|portfolio/)}{/};
10772: return $file;
10773: }
10774:
10775: # ------------------------------------------------------------- Mark as Read Only
10776:
10777: sub mark_as_readonly {
10778: my ($domain,$user,$files,$what) = @_;
10779: my %current_permissions = &dump('file_permissions',$domain,$user);
10780: my ($tmp)=keys(%current_permissions);
10781: if ($tmp=~/^error:/) { undef(%current_permissions); }
10782: foreach my $file (@{$files}) {
10783: $file = &declutter_portfile($file);
10784: push(@{$current_permissions{$file}},$what);
10785: }
10786: &put('file_permissions',\%current_permissions,$domain,$user);
10787: return;
10788: }
10789:
10790: # ------------------------------------------------------------Save Selected Files
10791:
10792: sub save_selected_files {
10793: my ($user, $path, @files) = @_;
10794: my $filename = $user."savedfiles";
10795: my @other_files = &files_not_in_path($user, $path);
10796: open (OUT,'>',LONCAPA::tempdir().$filename);
10797: foreach my $file (@files) {
10798: print (OUT $env{'form.currentpath'}.$file."\n");
10799: }
10800: foreach my $file (@other_files) {
10801: print (OUT $file."\n");
10802: }
10803: close (OUT);
10804: return 'ok';
10805: }
10806:
10807: sub clear_selected_files {
10808: my ($user) = @_;
10809: my $filename = $user."savedfiles";
10810: open (OUT,'>',LONCAPA::tempdir().$filename);
10811: print (OUT undef);
10812: close (OUT);
10813: return ("ok");
10814: }
10815:
10816: sub files_in_path {
10817: my ($user, $path) = @_;
10818: my $filename = $user."savedfiles";
10819: my %return_files;
10820: open (IN,'<',LONCAPA::tempdir().$filename);
10821: while (my $line_in = <IN>) {
10822: chomp ($line_in);
10823: my @paths_and_file = split (m!/!, $line_in);
10824: my $file_part = pop (@paths_and_file);
10825: my $path_part = join ('/', @paths_and_file);
10826: $path_part.='/';
10827: my $path_and_file = $path_part.$file_part;
10828: if ($path_part eq $path) {
10829: $return_files{$file_part}= 'selected';
10830: }
10831: }
10832: close (IN);
10833: return (\%return_files);
10834: }
10835:
10836: # called in portfolio select mode, to show files selected NOT in current directory
10837: sub files_not_in_path {
10838: my ($user, $path) = @_;
10839: my $filename = $user."savedfiles";
10840: my @return_files;
10841: my $path_part;
10842: open(IN, '<',LONCAPA::tempdir().$filename);
10843: while (my $line = <IN>) {
10844: #ok, I know it's clunky, but I want it to work
10845: my @paths_and_file = split(m|/|, $line);
10846: my $file_part = pop(@paths_and_file);
10847: chomp($file_part);
10848: my $path_part = join('/', @paths_and_file);
10849: $path_part .= '/';
10850: my $path_and_file = $path_part.$file_part;
10851: if ($path_part ne $path) {
10852: push(@return_files, ($path_and_file));
10853: }
10854: }
10855: close(OUT);
10856: return (@return_files);
10857: }
10858:
10859: #------------------------------Submitted/Handedback Portfolio Files Versioning
10860:
10861: sub portfiles_versioning {
10862: my ($symb,$domain,$stu_name,$portfiles,$versioned_portfiles) = @_;
10863: my $portfolio_root = '/userfiles/portfolio';
10864: return unless ((ref($portfiles) eq 'ARRAY') && (ref($versioned_portfiles) eq 'ARRAY'));
10865: foreach my $file (@{$portfiles}) {
10866: &unmark_as_readonly($domain,$stu_name,[$symb,$env{'request.course.id'}],$file);
10867: my ($directory,$answer_file) =($file =~ /^(.*?)([^\/]*)$/);
10868: my ($answer_name,$answer_ver,$answer_ext) = &file_name_version_ext($answer_file);
10869: my $getpropath = 1;
10870: my ($dir_list,$listerror) = &dirlist($portfolio_root.$directory,$domain,
10871: $stu_name,$getpropath);
10872: my $version = &get_next_version($answer_name,$answer_ext,$dir_list);
10873: my $new_answer =
10874: &version_selected_portfile($domain,$stu_name,$directory,$answer_file,$version);
10875: if ($new_answer ne 'problem getting file') {
10876: push(@{$versioned_portfiles}, $directory.$new_answer);
10877: &mark_as_readonly($domain,$stu_name,[$directory.$new_answer],
10878: [$symb,$env{'request.course.id'},'graded']);
10879: }
10880: }
10881: }
10882:
10883: sub get_next_version {
10884: my ($answer_name, $answer_ext, $dir_list) = @_;
10885: my $version;
10886: if (ref($dir_list) eq 'ARRAY') {
10887: foreach my $row (@{$dir_list}) {
10888: my ($file) = split(/\&/,$row,2);
10889: my ($file_name,$file_version,$file_ext) =
10890: &file_name_version_ext($file);
10891: if (($file_name eq $answer_name) &&
10892: ($file_ext eq $answer_ext)) {
10893: # gets here if filename and extension match,
10894: # regardless of version
10895: if ($file_version ne '') {
10896: # a versioned file is found so save it for later
10897: if ($file_version > $version) {
10898: $version = $file_version;
10899: }
10900: }
10901: }
10902: }
10903: }
10904: $version ++;
10905: return($version);
10906: }
10907:
10908: sub version_selected_portfile {
10909: my ($domain,$stu_name,$directory,$file_name,$version) = @_;
10910: my ($answer_name,$answer_ver,$answer_ext) =
10911: &file_name_version_ext($file_name);
10912: my $new_answer;
10913: $env{'form.copy'} =
10914: &getfile("/uploaded/$domain/$stu_name/portfolio$directory$file_name");
10915: if($env{'form.copy'} eq '-1') {
10916: $new_answer = 'problem getting file';
10917: } else {
10918: $new_answer = $answer_name.'.'.$version.'.'.$answer_ext;
10919: my $copy_result =
10920: &finishuserfileupload($stu_name,$domain,'copy',
10921: '/portfolio'.$directory.$new_answer);
10922: }
10923: undef($env{'form.copy'});
10924: return ($new_answer);
10925: }
10926:
10927: sub file_name_version_ext {
10928: my ($file)=@_;
10929: my @file_parts = split(/\./, $file);
10930: my ($name,$version,$ext);
10931: if (@file_parts > 1) {
10932: $ext=pop(@file_parts);
10933: if (@file_parts > 1 && $file_parts[-1] =~ /^\d+$/) {
10934: $version=pop(@file_parts);
10935: }
10936: $name=join('.',@file_parts);
10937: } else {
10938: $name=join('.',@file_parts);
10939: }
10940: return($name,$version,$ext);
10941: }
10942:
10943: #----------------------------------------------Get portfolio file permissions
10944:
10945: sub get_portfile_permissions {
10946: my ($domain,$user) = @_;
10947: my %current_permissions = &dump('file_permissions',$domain,$user);
10948: my ($tmp)=keys(%current_permissions);
10949: if ($tmp=~/^error:/) { undef(%current_permissions); }
10950: return \%current_permissions;
10951: }
10952:
10953: #---------------------------------------------Get portfolio file access controls
10954:
10955: sub get_access_controls {
10956: my ($current_permissions,$group,$file) = @_;
10957: my %access;
10958: my $real_file = $file;
10959: $file =~ s/\.meta$//;
10960: if (defined($file)) {
10961: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
10962: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
10963: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
10964: }
10965: }
10966: } else {
10967: foreach my $key (keys(%{$current_permissions})) {
10968: if ($key =~ /\0accesscontrol$/) {
10969: if (defined($group)) {
10970: if ($key !~ m-^\Q$group\E/-) {
10971: next;
10972: }
10973: }
10974: my ($fullpath) = split(/\0/,$key);
10975: if (ref($$current_permissions{$key}) eq 'HASH') {
10976: foreach my $control (keys(%{$$current_permissions{$key}})) {
10977: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
10978: }
10979: }
10980: }
10981: }
10982: }
10983: return %access;
10984: }
10985:
10986: sub modify_access_controls {
10987: my ($file_name,$changes,$domain,$user)=@_;
10988: my ($outcome,$deloutcome);
10989: my %store_permissions;
10990: my %new_values;
10991: my %new_control;
10992: my %translation;
10993: my @deletions = ();
10994: my $now = time;
10995: if (exists($$changes{'activate'})) {
10996: if (ref($$changes{'activate'}) eq 'HASH') {
10997: my @newitems = sort(keys(%{$$changes{'activate'}}));
10998: my $numnew = scalar(@newitems);
10999: for (my $i=0; $i<$numnew; $i++) {
11000: my $newkey = $newitems[$i];
11001: my $newid = &Apache::loncommon::get_cgi_id();
11002: if ($newkey =~ /^\d+:/) {
11003: $newkey =~ s/^(\d+)/$newid/;
11004: $translation{$1} = $newid;
11005: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
11006: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
11007: $translation{$1} = $newid;
11008: }
11009: $new_values{$file_name."\0".$newkey} =
11010: $$changes{'activate'}{$newitems[$i]};
11011: $new_control{$newkey} = $now;
11012: }
11013: }
11014: }
11015: my %todelete;
11016: my %changed_items;
11017: foreach my $action ('delete','update') {
11018: if (exists($$changes{$action})) {
11019: if (ref($$changes{$action}) eq 'HASH') {
11020: foreach my $key (keys(%{$$changes{$action}})) {
11021: my ($itemnum) = ($key =~ /^([^:]+):/);
11022: if ($action eq 'delete') {
11023: $todelete{$itemnum} = 1;
11024: } else {
11025: $changed_items{$itemnum} = $key;
11026: }
11027: }
11028: }
11029: }
11030: }
11031: # get lock on access controls for file.
11032: my $lockhash = {
11033: $file_name."\0".'locked_access_records' => $env{'user.name'}.
11034: ':'.$env{'user.domain'},
11035: };
11036: my $tries = 0;
11037: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
11038:
11039: while (($gotlock ne 'ok') && $tries < 10) {
11040: $tries ++;
11041: sleep(0.1);
11042: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
11043: }
11044: if ($gotlock eq 'ok') {
11045: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
11046: my ($tmp)=keys(%curr_permissions);
11047: if ($tmp=~/^error:/) { undef(%curr_permissions); }
11048: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
11049: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
11050: if (ref($curr_controls) eq 'HASH') {
11051: foreach my $control_item (keys(%{$curr_controls})) {
11052: my ($itemnum) = ($control_item =~ /^([^:]+):/);
11053: if (defined($todelete{$itemnum})) {
11054: push(@deletions,$file_name."\0".$control_item);
11055: } else {
11056: if (defined($changed_items{$itemnum})) {
11057: $new_control{$changed_items{$itemnum}} = $now;
11058: push(@deletions,$file_name."\0".$control_item);
11059: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
11060: } else {
11061: $new_control{$control_item} = $$curr_controls{$control_item};
11062: }
11063: }
11064: }
11065: }
11066: }
11067: my ($group);
11068: if (&is_course($domain,$user)) {
11069: ($group,my $file) = split(/\//,$file_name,2);
11070: }
11071: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
11072: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
11073: $outcome = &put('file_permissions',\%new_values,$domain,$user);
11074: # remove lock
11075: my @del_lock = ($file_name."\0".'locked_access_records');
11076: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
11077: my $sqlresult =
11078: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
11079: $group);
11080: } else {
11081: $outcome = "error: could not obtain lockfile\n";
11082: }
11083: return ($outcome,$deloutcome,\%new_values,\%translation);
11084: }
11085:
11086: sub make_public_indefinitely {
11087: my (@requrl) = @_;
11088: return &automated_portfile_access('public',\@requrl);
11089: }
11090:
11091: sub automated_portfile_access {
11092: my ($accesstype,$addsref,$delsref,$info) = @_;
11093: unless (($accesstype eq 'public') || ($accesstype eq 'ip')) {
11094: return 'invalid';
11095: }
11096: my %urls;
11097: if (ref($addsref) eq 'ARRAY') {
11098: foreach my $requrl (@{$addsref}) {
11099: if (&is_portfolio_url($requrl)) {
11100: unless (exists($urls{$requrl})) {
11101: $urls{$requrl} = 'add';
11102: }
11103: }
11104: }
11105: }
11106: if (ref($delsref) eq 'ARRAY') {
11107: foreach my $requrl (@{$delsref}) {
11108: if (&is_portfolio_url($requrl)) {
11109: unless (exists($urls{$requrl})) {
11110: $urls{$requrl} = 'delete';
11111: }
11112: }
11113: }
11114: }
11115: unless (keys(%urls)) {
11116: return 'invalid';
11117: }
11118: my $ip;
11119: if ($accesstype eq 'ip') {
11120: if (ref($info) eq 'HASH') {
11121: if ($info->{'ip'} ne '') {
11122: $ip = $info->{'ip'};
11123: }
11124: }
11125: if ($ip eq '') {
11126: return 'invalid';
11127: }
11128: }
11129: my $errors;
11130: my $now = time;
11131: my %current_perms;
11132: foreach my $requrl (sort(keys(%urls))) {
11133: my $action;
11134: if ($urls{$requrl} eq 'add') {
11135: $action = 'activate';
11136: } else {
11137: $action = 'none';
11138: }
11139: my $aclnum = 0;
11140: my (undef,$udom,$unum,$file_name,$group) =
11141: &parse_portfolio_url($requrl);
11142: unless (exists($current_perms{$unum.':'.$udom})) {
11143: $current_perms{$unum.':'.$udom} = &get_portfile_permissions($udom,$unum);
11144: }
11145: my %access_controls = &get_access_controls($current_perms{$unum.':'.$udom},
11146: $group,$file_name);
11147: foreach my $key (keys(%{$access_controls{$file_name}})) {
11148: my ($num,$scope,$end,$start) =
11149: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
11150: if ($scope eq $accesstype) {
11151: if (($start <= $now) && ($end == 0)) {
11152: if ($accesstype eq 'ip') {
11153: if (ref($access_controls{$file_name}{$key}) eq 'HASH') {
11154: if (ref($access_controls{$file_name}{$key}{'ip'}) eq 'ARRAY') {
11155: if (grep(/^\Q$ip\E$/,@{$access_controls{$file_name}{$key}{'ip'}})) {
11156: if ($urls{$requrl} eq 'add') {
11157: $action = 'none';
11158: last;
11159: } else {
11160: $action = 'delete';
11161: $aclnum = $num;
11162: last;
11163: }
11164: }
11165: }
11166: }
11167: } elsif ($accesstype eq 'public') {
11168: if ($urls{$requrl} eq 'add') {
11169: $action = 'none';
11170: last;
11171: } else {
11172: $action = 'delete';
11173: $aclnum = $num;
11174: last;
11175: }
11176: }
11177: } elsif ($accesstype eq 'public') {
11178: $action = 'update';
11179: $aclnum = $num;
11180: last;
11181: }
11182: }
11183: }
11184: if ($action eq 'none') {
11185: next;
11186: } else {
11187: my %changes;
11188: my $newend = 0;
11189: my $newstart = $now;
11190: my $newkey = $aclnum.':'.$accesstype.'_'.$newend.'_'.$newstart;
11191: $changes{$action}{$newkey} = {
11192: type => $accesstype,
11193: time => {
11194: start => $newstart,
11195: end => $newend,
11196: },
11197: };
11198: if ($accesstype eq 'ip') {
11199: $changes{$action}{$newkey}{'ip'} = [$ip];
11200: }
11201: my ($outcome,$deloutcome,$new_values,$translation) =
11202: &modify_access_controls($file_name,\%changes,$udom,$unum);
11203: unless ($outcome eq 'ok') {
11204: $errors .= $outcome.' ';
11205: }
11206: }
11207: }
11208: if ($errors) {
11209: $errors =~ s/\s$//;
11210: return $errors;
11211: } else {
11212: return 'ok';
11213: }
11214: }
11215:
11216: #------------------------------------------------------Get Marked as Read Only
11217:
11218: sub get_marked_as_readonly {
11219: my ($domain,$user,$what,$group) = @_;
11220: my $current_permissions = &get_portfile_permissions($domain,$user);
11221: my @readonly_files;
11222: my $cmp1=$what;
11223: if (ref($what)) { $cmp1=join('',@{$what}) };
11224: while (my ($file_name,$value) = each(%{$current_permissions})) {
11225: if (defined($group)) {
11226: if ($file_name !~ m-^\Q$group\E/-) {
11227: next;
11228: }
11229: }
11230: if (ref($value) eq "ARRAY"){
11231: foreach my $stored_what (@{$value}) {
11232: my $cmp2=$stored_what;
11233: if (ref($stored_what) eq 'ARRAY') {
11234: $cmp2=join('',@{$stored_what});
11235: }
11236: if ($cmp1 eq $cmp2) {
11237: push(@readonly_files, $file_name);
11238: last;
11239: } elsif (!defined($what)) {
11240: push(@readonly_files, $file_name);
11241: last;
11242: }
11243: }
11244: }
11245: }
11246: return @readonly_files;
11247: }
11248: #-----------------------------------------------------------Get Marked as Read Only Hash
11249:
11250: sub get_marked_as_readonly_hash {
11251: my ($current_permissions,$group,$what) = @_;
11252: my %readonly_files;
11253: while (my ($file_name,$value) = each(%{$current_permissions})) {
11254: if (defined($group)) {
11255: if ($file_name !~ m-^\Q$group\E/-) {
11256: next;
11257: }
11258: }
11259: if (ref($value) eq "ARRAY"){
11260: foreach my $stored_what (@{$value}) {
11261: if (ref($stored_what) eq 'ARRAY') {
11262: foreach my $lock_descriptor(@{$stored_what}) {
11263: if ($lock_descriptor eq 'graded') {
11264: $readonly_files{$file_name} = 'graded';
11265: } elsif ($lock_descriptor eq 'handback') {
11266: $readonly_files{$file_name} = 'handback';
11267: } else {
11268: if (!exists($readonly_files{$file_name})) {
11269: $readonly_files{$file_name} = 'locked';
11270: }
11271: }
11272: }
11273: }
11274: }
11275: }
11276: }
11277: return %readonly_files;
11278: }
11279: # ------------------------------------------------------------ Unmark as Read Only
11280:
11281: sub unmark_as_readonly {
11282: # unmarks $file_name (if $file_name is defined), or all files locked by $what
11283: # for portfolio submissions, $what contains [$symb,$crsid]
11284: my ($domain,$user,$what,$file_name,$group) = @_;
11285: $file_name = &declutter_portfile($file_name);
11286: my $symb_crs = $what;
11287: if (ref($what)) { $symb_crs=join('',@$what); }
11288: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
11289: my ($tmp)=keys(%current_permissions);
11290: if ($tmp=~/^error:/) { undef(%current_permissions); }
11291: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
11292: foreach my $file (@readonly_files) {
11293: my $clean_file = &declutter_portfile($file);
11294: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
11295: my $current_locks = $current_permissions{$file};
11296: my @new_locks;
11297: my @del_keys;
11298: if (ref($current_locks) eq "ARRAY"){
11299: foreach my $locker (@{$current_locks}) {
11300: my $compare=$locker;
11301: if (ref($locker) eq 'ARRAY') {
11302: $compare=join('',@{$locker});
11303: if ($compare ne $symb_crs) {
11304: push(@new_locks, $locker);
11305: }
11306: }
11307: }
11308: if (scalar(@new_locks) > 0) {
11309: $current_permissions{$file} = \@new_locks;
11310: } else {
11311: push(@del_keys, $file);
11312: &del('file_permissions',\@del_keys, $domain, $user);
11313: delete($current_permissions{$file});
11314: }
11315: }
11316: }
11317: &put('file_permissions',\%current_permissions,$domain,$user);
11318: return;
11319: }
11320:
11321: # ------------------------------------------------------------ Directory lister
11322:
11323: sub dirlist {
11324: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
11325: $uri=~s/^\///;
11326: $uri=~s/\/$//;
11327: my ($udom, $uname);
11328: if ($getuserdir) {
11329: $udom = $userdomain;
11330: $uname = $username;
11331: } else {
11332: (undef,$udom,$uname)=split(/\//,$uri);
11333: if(defined($userdomain)) {
11334: $udom = $userdomain;
11335: }
11336: if(defined($username)) {
11337: $uname = $username;
11338: }
11339: }
11340: my ($dirRoot,$listing,@listing_results);
11341:
11342: $dirRoot = $perlvar{'lonDocRoot'};
11343: if (defined($getpropath)) {
11344: $dirRoot = &propath($udom,$uname);
11345: $dirRoot =~ s/\/$//;
11346: } elsif (defined($getuserdir)) {
11347: my $subdir=$uname.'__';
11348: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
11349: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
11350: ."/$udom/$subdir/$uname";
11351: } elsif (defined($alternateRoot)) {
11352: $dirRoot = $alternateRoot;
11353: }
11354:
11355: if($udom) {
11356: if($uname) {
11357: my $uhome = &homeserver($uname,$udom);
11358: if ($uhome eq 'no_host') {
11359: return ([],'no_host');
11360: }
11361: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
11362: .$getuserdir.':'.&escape($dirRoot)
11363: .':'.&escape($uname).':'.&escape($udom),$uhome);
11364: if ($listing eq 'unknown_cmd') {
11365: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
11366: } else {
11367: @listing_results = map { &unescape($_); } split(/:/,$listing);
11368: }
11369: if ($listing eq 'unknown_cmd') {
11370: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
11371: @listing_results = split(/:/,$listing);
11372: } else {
11373: @listing_results = map { &unescape($_); } split(/:/,$listing);
11374: }
11375: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
11376: ($listing eq 'rejected') || ($listing eq 'refused') ||
11377: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
11378: return ([],$listing);
11379: } else {
11380: return (\@listing_results);
11381: }
11382: } elsif(!$alternateRoot) {
11383: my (%allusers,%listerror);
11384: my %servers = &get_servers($udom,'library');
11385: foreach my $tryserver (keys(%servers)) {
11386: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
11387: &escape($udom),$tryserver);
11388: if ($listing eq 'unknown_cmd') {
11389: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
11390: $udom, $tryserver);
11391: } else {
11392: @listing_results = map { &unescape($_); } split(/:/,$listing);
11393: }
11394: if ($listing eq 'unknown_cmd') {
11395: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
11396: $udom, $tryserver);
11397: @listing_results = split(/:/,$listing);
11398: } else {
11399: @listing_results =
11400: map { &unescape($_); } split(/:/,$listing);
11401: }
11402: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
11403: ($listing eq 'rejected') || ($listing eq 'refused') ||
11404: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
11405: $listerror{$tryserver} = $listing;
11406: } else {
11407: foreach my $line (@listing_results) {
11408: my ($entry) = split(/&/,$line,2);
11409: $allusers{$entry} = 1;
11410: }
11411: }
11412: }
11413: my @alluserslist=();
11414: foreach my $user (sort(keys(%allusers))) {
11415: push(@alluserslist,$user.'&user');
11416: }
11417:
11418: if (!%listerror) {
11419: # no errors
11420: return (\@alluserslist);
11421: } elsif (scalar(keys(%servers)) == 1) {
11422: # one library server, one error
11423: my ($key) = keys(%listerror);
11424: return (\@alluserslist, $listerror{$key});
11425: } elsif ( grep { $_ eq 'con_lost' } values(%listerror) ) {
11426: # con_lost indicates that we might miss data from at least one
11427: # library server
11428: return (\@alluserslist, 'con_lost');
11429: } else {
11430: # multiple library servers and no con_lost -> data should be
11431: # complete.
11432: return (\@alluserslist);
11433: }
11434:
11435: } else {
11436: return ([],'missing username');
11437: }
11438: } elsif(!defined($getpropath)) {
11439: my $path = $perlvar{'lonDocRoot'}.'/res/';
11440: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
11441: return (\@all_domains);
11442: } else {
11443: return ([],'missing domain');
11444: }
11445: }
11446:
11447: # --------------------------------------------- GetFileTimestamp
11448: # This function utilizes dirlist and returns the date stamp for
11449: # when it was last modified. It will also return an error of -1
11450: # if an error occurs
11451:
11452: sub GetFileTimestamp {
11453: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
11454: $studentDomain = &LONCAPA::clean_domain($studentDomain);
11455: $studentName = &LONCAPA::clean_username($studentName);
11456: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
11457: undef,$getuserdir);
11458: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
11459: return -1;
11460: }
11461: if (ref($fileref) eq 'ARRAY') {
11462: my @stats = split('&',$fileref->[0]);
11463: # @stats contains first the filename, then the stat output
11464: return $stats[10]; # so this is 10 instead of 9.
11465: } else {
11466: return -1;
11467: }
11468: }
11469:
11470: sub stat_file {
11471: my ($uri) = @_;
11472: $uri = &clutter_with_no_wrapper($uri);
11473:
11474: my ($udom,$uname,$file);
11475: if ($uri =~ m-^/(uploaded|editupload)/-) {
11476: ($udom,$uname,$file) =
11477: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
11478: $file = 'userfiles/'.$file;
11479: }
11480: if ($uri =~ m-^/res/-) {
11481: ($udom,$uname) =
11482: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
11483: $file = $uri;
11484: }
11485:
11486: if (!$udom || !$uname || !$file) {
11487: # unable to handle the uri
11488: return ();
11489: }
11490: my $getpropath;
11491: if ($file =~ /^userfiles\//) {
11492: $getpropath = 1;
11493: }
11494: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
11495: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
11496: return ();
11497: } else {
11498: if (ref($listref) eq 'ARRAY') {
11499: my @stats = split('&',$listref->[0]);
11500: shift(@stats); #filename is first
11501: return @stats;
11502: }
11503: }
11504: return ();
11505: }
11506:
11507: # --------------------------------------------------------- recursedirs
11508: # Recursive function to traverse either a specific user's Authoring Space
11509: # or corresponding Published Resource Space, and populate the hash ref:
11510: # $dirhashref with URLs of all directories, and if $filehashref hash
11511: # ref arg is provided, the URLs of any files, excluding versioned, .meta,
11512: # or .rights files in resource space, and .meta, .save, .log, and .bak
11513: # files in Authoring Space.
11514: #
11515: # Inputs:
11516: #
11517: # $is_home - true if current server is home server for user's space
11518: # $context - either: priv, or res respectively for Authoring or Resource Space.
11519: # $docroot - Document root (i.e., /home/httpd/html
11520: # $toppath - Top level directory (i.e., /res/$dom/$uname or /priv/$dom/$uname
11521: # $relpath - Current path (relative to top level).
11522: # $dirhashref - reference to hash to populate with URLs of directories (Required)
11523: # $filehashref - reference to hash to populate with URLs of files (Optional)
11524: #
11525: # Returns: nothing
11526: #
11527: # Side Effects: populates $dirhashref, and $filehashref (if provided).
11528: #
11529: # Currently used by interface/londocs.pm to create linked select boxes for
11530: # directory and filename to import a Course "Author" resource into a course, and
11531: # also to create linked select boxes for Authoring Space and Directory to choose
11532: # save location for creation of a new "standard" problem from the Course Editor.
11533: #
11534:
11535: sub recursedirs {
11536: my ($is_home,$context,$docroot,$toppath,$relpath,$dirhashref,$filehashref) = @_;
11537: return unless (ref($dirhashref) eq 'HASH');
11538: my $currpath = $docroot.$toppath;
11539: if ($relpath) {
11540: $currpath .= "/$relpath";
11541: }
11542: my $savefile;
11543: if (ref($filehashref)) {
11544: $savefile = 1;
11545: }
11546: if ($is_home) {
11547: if (opendir(my $dirh,$currpath)) {
11548: foreach my $item (sort { lc($a) cmp lc($b) } grep(!/^\.+$/,readdir($dirh))) {
11549: next if ($item eq '');
11550: if (-d "$currpath/$item") {
11551: my $newpath;
11552: if ($relpath) {
11553: $newpath = "$relpath/$item";
11554: } else {
11555: $newpath = $item;
11556: }
11557: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
11558: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
11559: } elsif ($savefile) {
11560: if ($context eq 'priv') {
11561: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
11562: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
11563: }
11564: } else {
11565: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/) || ($item =~ /\.rights$/)) {
11566: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
11567: }
11568: }
11569: }
11570: }
11571: closedir($dirh);
11572: }
11573: } else {
11574: my ($dirlistref,$listerror) =
11575: &dirlist($toppath.$relpath);
11576: my @dir_lines;
11577: my $dirptr=16384;
11578: if (ref($dirlistref) eq 'ARRAY') {
11579: foreach my $dir_line (sort
11580: {
11581: my ($afile)=split('&',$a,2);
11582: my ($bfile)=split('&',$b,2);
11583: return (lc($afile) cmp lc($bfile));
11584: } (@{$dirlistref})) {
11585: my ($item,$dom,undef,$testdir,undef,undef,undef,undef,$size,undef,$mtime,undef,undef,undef,$obs,undef) =
11586: split(/\&/,$dir_line,16);
11587: $item =~ s/\s+$//;
11588: next if (($item =~ /^\.\.?$/) || ($obs));
11589: if ($dirptr&$testdir) {
11590: my $newpath;
11591: if ($relpath) {
11592: $newpath = "$relpath/$item";
11593: } else {
11594: $relpath = '/';
11595: $newpath = $item;
11596: }
11597: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
11598: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
11599: } elsif ($savefile) {
11600: if ($context eq 'priv') {
11601: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
11602: $filehashref->{$relpath}{$item} = 1;
11603: }
11604: } else {
11605: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/)) {
11606: $filehashref->{$relpath}{$item} = 1;
11607: }
11608: }
11609: }
11610: }
11611: }
11612: }
11613: return;
11614: }
11615:
11616: # -------------------------------------------------------- Value of a Condition
11617:
11618: # gets the value of a specific preevaluated condition
11619: # stored in the string $env{user.state.<cid>}
11620: # or looks up a condition reference in the bighash and if if hasn't
11621: # already been evaluated recurses into docondval to get the value of
11622: # the condition, then memoizing it to
11623: # $env{user.state.<cid>.<condition>}
11624: sub directcondval {
11625: my $number=shift;
11626: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
11627: &Apache::lonuserstate::evalstate();
11628: }
11629: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
11630: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
11631: } elsif ($number =~ /^_/) {
11632: my $sub_condition;
11633: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11634: &GDBM_READER(),0640)) {
11635: $sub_condition=$bighash{'conditions'.$number};
11636: untie(%bighash);
11637: }
11638: my $value = &docondval($sub_condition);
11639: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
11640: return $value;
11641: }
11642: if ($env{'user.state.'.$env{'request.course.id'}}) {
11643: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
11644: } else {
11645: return 2;
11646: }
11647: }
11648:
11649: # get the collection of conditions for this resource
11650: sub condval {
11651: my $condidx=shift;
11652: my $allpathcond='';
11653: foreach my $cond (split(/\|/,$condidx)) {
11654: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
11655: $allpathcond.=
11656: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
11657: }
11658: }
11659: $allpathcond=~s/\|$//;
11660: return &docondval($allpathcond);
11661: }
11662:
11663: #evaluates an expression of conditions
11664: sub docondval {
11665: my ($allpathcond) = @_;
11666: my $result=0;
11667: if ($env{'request.course.id'}
11668: && defined($allpathcond)) {
11669: my $operand='|';
11670: my @stack;
11671: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
11672: if ($chunk eq '(') {
11673: push @stack,($operand,$result);
11674: } elsif ($chunk eq ')') {
11675: my $before=pop @stack;
11676: if (pop @stack eq '&') {
11677: $result=$result>$before?$before:$result;
11678: } else {
11679: $result=$result>$before?$result:$before;
11680: }
11681: } elsif (($chunk eq '&') || ($chunk eq '|')) {
11682: $operand=$chunk;
11683: } else {
11684: my $new=directcondval($chunk);
11685: if ($operand eq '&') {
11686: $result=$result>$new?$new:$result;
11687: } else {
11688: $result=$result>$new?$result:$new;
11689: }
11690: }
11691: }
11692: }
11693: return $result;
11694: }
11695:
11696: # ---------------------------------------------------- Devalidate courseresdata
11697:
11698: sub devalidatecourseresdata {
11699: my ($coursenum,$coursedomain)=@_;
11700: my $hashid=$coursenum.':'.$coursedomain;
11701: &devalidate_cache_new('courseres',$hashid);
11702: }
11703:
11704:
11705: # --------------------------------------------------- Course Resourcedata Query
11706: #
11707: # Parameters:
11708: # $coursenum - Number of the course.
11709: # $coursedomain - Domain at which the course was created.
11710: # Returns:
11711: # A hash of the course parameters along (I think) with timestamps
11712: # and version info.
11713:
11714: sub get_courseresdata {
11715: my ($coursenum,$coursedomain)=@_;
11716: my $coursehom=&homeserver($coursenum,$coursedomain);
11717: my $hashid=$coursenum.':'.$coursedomain;
11718: my ($result,$cached)=&is_cached_new('courseres',$hashid);
11719: my %dumpreply;
11720: unless (defined($cached)) {
11721: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
11722: $result=\%dumpreply;
11723: my ($tmp) = keys(%dumpreply);
11724: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
11725: &do_cache_new('courseres',$hashid,$result,600);
11726: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
11727: return $tmp;
11728: } elsif ($tmp =~ /^(error)/) {
11729: $result=undef;
11730: &do_cache_new('courseres',$hashid,$result,600);
11731: }
11732: }
11733: return $result;
11734: }
11735:
11736: sub devalidateuserresdata {
11737: my ($uname,$udom)=@_;
11738: my $hashid="$udom:$uname";
11739: &devalidate_cache_new('userres',$hashid);
11740: }
11741:
11742: sub get_userresdata {
11743: my ($uname,$udom)=@_;
11744: #most student don\'t have any data set, check if there is some data
11745: if (&EXT_cache_status($udom,$uname)) { return undef; }
11746:
11747: my $hashid="$udom:$uname";
11748: my ($result,$cached)=&is_cached_new('userres',$hashid);
11749: if (!defined($cached)) {
11750: my %resourcedata=&dump('resourcedata',$udom,$uname);
11751: $result=\%resourcedata;
11752: &do_cache_new('userres',$hashid,$result,600);
11753: }
11754: my ($tmp)=keys(%$result);
11755: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
11756: return $result;
11757: }
11758: #error 2 occurs when the .db doesn't exist
11759: if ($tmp!~/error: 2 /) {
11760: if ((!defined($cached)) || ($tmp ne 'con_lost')) {
11761: &logthis("<font color=\"blue\">WARNING:".
11762: " Trying to get resource data for ".
11763: $uname." at ".$udom.": ".
11764: $tmp."</font>");
11765: }
11766: } elsif ($tmp=~/error: 2 /) {
11767: #&EXT_cache_set($udom,$uname);
11768: &do_cache_new('userres',$hashid,undef,600);
11769: undef($tmp); # not really an error so don't send it back
11770: }
11771: return $tmp;
11772: }
11773: #----------------------------------------------- resdata - return resource data
11774: # Purpose:
11775: # Return resource data for either users or for a course.
11776: # Parameters:
11777: # $name - Course/user name.
11778: # $domain - Name of the domain the user/course is registered on.
11779: # $type - Type of thing $name is (must be 'course' or 'user')
11780: # $mapp - decluttered URL of enclosing map
11781: # $recursed - Ref to scalar -- set to 1, if nested maps have been recursed.
11782: # $recurseup - Ref to array of map URLs, starting with map containing
11783: # $mapp up through hierarchy of nested maps to top level map.
11784: # $courseid - CourseID (first part of param identifier).
11785: # $modifier - Middle part of param identifier.
11786: # $what - Last part of param identifier.
11787: # @which - Array of names of resources desired.
11788: # Returns:
11789: # The value of the first reasource in @which that is found in the
11790: # resource hash.
11791: # Exceptional Conditions:
11792: # If the $type passed in is not valid (not the string 'course' or
11793: # 'user', an undefined reference is returned.
11794: # If none of the resources are found, an undef is returned
11795: sub resdata {
11796: my ($name,$domain,$type,$mapp,$recursed,$recurseup,$courseid,
11797: $modifier,$what,@which)=@_;
11798: my $result;
11799: if ($type eq 'course') {
11800: $result=&get_courseresdata($name,$domain);
11801: } elsif ($type eq 'user') {
11802: $result=&get_userresdata($name,$domain);
11803: }
11804: if (!ref($result)) { return $result; }
11805: foreach my $item (@which) {
11806: if ($item->[1] eq 'course') {
11807: if ((ref($recurseup) eq 'ARRAY') && (ref($recursed) eq 'SCALAR')) {
11808: unless ($$recursed) {
11809: @{$recurseup} = &get_map_hierarchy($mapp,$courseid);
11810: $$recursed = 1;
11811: }
11812: foreach my $item (@${recurseup}) {
11813: my $norecursechk=$courseid.$modifier.$item.'___(all).'.$what;
11814: last if (defined($result->{$norecursechk}));
11815: my $recursechk=$courseid.$modifier.$item.'___(rec).'.$what;
11816: if (defined($result->{$recursechk})) { return [$result->{$recursechk},'map']; }
11817: }
11818: }
11819: }
11820: if (defined($result->{$item->[0]})) {
11821: return [$result->{$item->[0]},$item->[1]];
11822: }
11823: }
11824: return undef;
11825: }
11826:
11827: sub get_domain_lti {
11828: my ($cdom,$context) = @_;
11829: my ($name,%lti);
11830: if ($context eq 'consumer') {
11831: $name = 'ltitools';
11832: } elsif ($context eq 'provider') {
11833: $name = 'lti';
11834: } else {
11835: return %lti;
11836: }
11837: my ($result,$cached)=&is_cached_new($name,$cdom);
11838: if (defined($cached)) {
11839: if (ref($result) eq 'HASH') {
11840: %lti = %{$result};
11841: }
11842: } else {
11843: my %domconfig = &get_dom('configuration',[$name],$cdom);
11844: if (ref($domconfig{$name}) eq 'HASH') {
11845: %lti = %{$domconfig{$name}};
11846: my %encdomconfig = &get_dom('encconfig',[$name],$cdom);
11847: if (ref($encdomconfig{$name}) eq 'HASH') {
11848: foreach my $id (keys(%lti)) {
11849: if (ref($encdomconfig{$name}{$id}) eq 'HASH') {
11850: foreach my $item ('key','secret') {
11851: $lti{$id}{$item} = $encdomconfig{$name}{$id}{$item};
11852: }
11853: }
11854: }
11855: }
11856: }
11857: my $cachetime = 24*60*60;
11858: &do_cache_new($name,$cdom,\%lti,$cachetime);
11859: }
11860: return %lti;
11861: }
11862:
11863: sub get_numsuppfiles {
11864: my ($cnum,$cdom,$ignorecache)=@_;
11865: my $hashid=$cnum.':'.$cdom;
11866: my ($suppcount,$cached);
11867: unless ($ignorecache) {
11868: ($suppcount,$cached) = &is_cached_new('suppcount',$hashid);
11869: }
11870: unless (defined($cached)) {
11871: my $chome=&homeserver($cnum,$cdom);
11872: unless ($chome eq 'no_host') {
11873: ($suppcount,my $supptools,my $errors) = (0,0,0);
11874: my $suppmap = 'supplemental.sequence';
11875: ($suppcount,$supptools,$errors) =
11876: &Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,
11877: $supptools,$errors);
11878: }
11879: &do_cache_new('suppcount',$hashid,$suppcount,600);
11880: }
11881: return $suppcount;
11882: }
11883:
11884: #
11885: # EXT resource caching routines
11886: #
11887:
11888: {
11889: # Cache (5 seconds) of map hierarchy for speedup of navmaps display
11890: #
11891: # The course for which we cache
11892: my $cachedmapkey='';
11893: # The cached recursive maps for this course
11894: my %cachedmaps=();
11895: # When this was last done
11896: my $cachedmaptime='';
11897:
11898: sub clear_EXT_cache_status {
11899: &delenv('cache.EXT.');
11900: }
11901:
11902: sub EXT_cache_status {
11903: my ($target_domain,$target_user) = @_;
11904: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
11905: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
11906: # We know already the user has no data
11907: return 1;
11908: } else {
11909: return 0;
11910: }
11911: }
11912:
11913: sub EXT_cache_set {
11914: my ($target_domain,$target_user) = @_;
11915: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
11916: #&appenv({$cachename => time});
11917: }
11918:
11919: # --------------------------------------------------------- Value of a Variable
11920: sub EXT {
11921:
11922: my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid)=@_;
11923: unless ($varname) { return ''; }
11924: #get real user name/domain, courseid and symb
11925: my $courseid;
11926: my $publicuser;
11927: if ($symbparm) {
11928: $symbparm=&get_symb_from_alias($symbparm);
11929: }
11930: if (!($uname && $udom)) {
11931: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
11932: if (!$symbparm) { $symbparm=$cursymb; }
11933: } else {
11934: $courseid=$env{'request.course.id'};
11935: }
11936: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
11937: my $rest;
11938: if (defined($therest[0])) {
11939: $rest=join('.',@therest);
11940: } else {
11941: $rest='';
11942: }
11943:
11944: my $qualifierrest=$qualifier;
11945: if ($rest) { $qualifierrest.='.'.$rest; }
11946: my $spacequalifierrest=$space;
11947: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
11948: if ($realm eq 'user') {
11949: # --------------------------------------------------------------- user.resource
11950: if ($space eq 'resource') {
11951: if ( (defined($Apache::lonhomework::parsing_a_problem)
11952: || defined($Apache::lonhomework::parsing_a_task))
11953: &&
11954: ($symbparm eq &symbread()) ) {
11955: # if we are in the middle of processing the resource the
11956: # get the value we are planning on committing
11957: if (defined($Apache::lonhomework::results{$qualifierrest})) {
11958: return $Apache::lonhomework::results{$qualifierrest};
11959: } else {
11960: return $Apache::lonhomework::history{$qualifierrest};
11961: }
11962: } else {
11963: my %restored;
11964: if ($publicuser || $env{'request.state'} eq 'construct') {
11965: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
11966: } else {
11967: %restored=&restore($symbparm,$courseid,$udom,$uname);
11968: }
11969: return $restored{$qualifierrest};
11970: }
11971: # ----------------------------------------------------------------- user.access
11972: } elsif ($space eq 'access') {
11973: # FIXME - not supporting calls for a specific user
11974: return &allowed($qualifier,$rest);
11975: # ------------------------------------------ user.preferences, user.environment
11976: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
11977: if (($uname eq $env{'user.name'}) &&
11978: ($udom eq $env{'user.domain'})) {
11979: return $env{join('.',('environment',$qualifierrest))};
11980: } else {
11981: my %returnhash;
11982: if (!$publicuser) {
11983: %returnhash=&userenvironment($udom,$uname,
11984: $qualifierrest);
11985: }
11986: return $returnhash{$qualifierrest};
11987: }
11988: # ----------------------------------------------------------------- user.course
11989: } elsif ($space eq 'course') {
11990: # FIXME - not supporting calls for a specific user
11991: return $env{join('.',('request.course',$qualifier))};
11992: # ------------------------------------------------------------------- user.role
11993: } elsif ($space eq 'role') {
11994: # FIXME - not supporting calls for a specific user
11995: my ($role,$where)=split(/\./,$env{'request.role'});
11996: if ($qualifier eq 'value') {
11997: return $role;
11998: } elsif ($qualifier eq 'extent') {
11999: return $where;
12000: }
12001: # ----------------------------------------------------------------- user.domain
12002: } elsif ($space eq 'domain') {
12003: return $udom;
12004: # ------------------------------------------------------------------- user.name
12005: } elsif ($space eq 'name') {
12006: return $uname;
12007: # ---------------------------------------------------- Any other user namespace
12008: } else {
12009: my %reply;
12010: if (!$publicuser) {
12011: %reply=&get($space,[$qualifierrest],$udom,$uname);
12012: }
12013: return $reply{$qualifierrest};
12014: }
12015: } elsif ($realm eq 'query') {
12016: # ---------------------------------------------- pull stuff out of query string
12017: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
12018: [$spacequalifierrest]);
12019: return $env{'form.'.$spacequalifierrest};
12020: } elsif ($realm eq 'request') {
12021: # ------------------------------------------------------------- request.browser
12022: if ($space eq 'browser') {
12023: return $env{'browser.'.$qualifier};
12024: # ------------------------------------------------------------ request.filename
12025: } else {
12026: return $env{'request.'.$spacequalifierrest};
12027: }
12028: } elsif ($realm eq 'course') {
12029: # ---------------------------------------------------------- course.description
12030: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
12031: } elsif ($realm eq 'resource') {
12032:
12033: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
12034: if (!$symbparm) { $symbparm=&symbread(); }
12035: }
12036:
12037: if ($qualifier eq '') {
12038: if ($space eq 'title') {
12039: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
12040: return &gettitle($symbparm);
12041: }
12042:
12043: if ($space eq 'map') {
12044: my ($map) = &decode_symb($symbparm);
12045: return &symbread($map);
12046: }
12047: if ($space eq 'maptitle') {
12048: my ($map) = &decode_symb($symbparm);
12049: return &gettitle($map);
12050: }
12051: if ($space eq 'filename') {
12052: if ($symbparm) {
12053: return &clutter((&decode_symb($symbparm))[2]);
12054: }
12055: return &hreflocation('',$env{'request.filename'});
12056: }
12057:
12058: if ((defined($courseid)) && ($courseid eq $env{'request.course.id'}) && $symbparm) {
12059: if ($space eq 'visibleparts') {
12060: my $navmap = Apache::lonnavmaps::navmap->new();
12061: my $item;
12062: if (ref($navmap)) {
12063: my $res = $navmap->getBySymb($symbparm);
12064: my $parts = $res->parts();
12065: if (ref($parts) eq 'ARRAY') {
12066: $item = join(',',@{$parts});
12067: }
12068: undef($navmap);
12069: }
12070: return $item;
12071: }
12072: }
12073: }
12074:
12075: my ($section, $group, @groups, @recurseup, $recursed);
12076: my ($courselevelm,$courseleveli,$courselevel,$mapp);
12077: if (($courseid eq '') && ($cid)) {
12078: $courseid = $cid;
12079: }
12080: if (($symbparm && $courseid) &&
12081: (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid))) {
12082:
12083: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
12084:
12085: # ----------------------------------------------------- Cascading lookup scheme
12086: my $symbp=$symbparm;
12087: $mapp=&deversion((&decode_symb($symbp))[0]);
12088: my $symbparm=$symbp.'.'.$spacequalifierrest;
12089: my $recurseparm=$mapp.'___(rec).'.$spacequalifierrest;
12090: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
12091: if (($env{'user.name'} eq $uname) &&
12092: ($env{'user.domain'} eq $udom)) {
12093: $section=$env{'request.course.sec'};
12094: @groups = split(/:/,$env{'request.course.groups'});
12095: @groups=&sort_course_groups($courseid,@groups);
12096: } else {
12097: if (! defined($usection)) {
12098: $section=&getsection($udom,$uname,$courseid);
12099: } else {
12100: $section = $usection;
12101: }
12102: @groups = &get_users_groups($udom,$uname,$courseid);
12103: }
12104:
12105: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
12106: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
12107: my $secleveli=$courseid.'.['.$section.'].'.$recurseparm;
12108: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
12109:
12110: $courselevel=$courseid.'.'.$spacequalifierrest;
12111: my $courselevelr=$courseid.'.'.$symbparm;
12112: $courseleveli=$courseid.'.'.$recurseparm;
12113: $courselevelm=$courseid.'.'.$mapparm;
12114:
12115: # ----------------------------------------------------------- first, check user
12116:
12117: my $userreply=&resdata($uname,$udom,'user',$mapp,\$recursed,
12118: \@recurseup,$courseid,'.',$spacequalifierrest,
12119: ([$courselevelr,'resource'],
12120: [$courselevelm,'map' ],
12121: [$courseleveli,'map' ],
12122: [$courselevel, 'course' ]));
12123: if (defined($userreply)) { return &get_reply($userreply); }
12124:
12125: # ------------------------------------------------ second, check some of course
12126: my $coursereply;
12127: if (@groups > 0) {
12128: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
12129: $recurseparm,$mapparm,$spacequalifierrest,
12130: $mapp,\$recursed,\@recurseup);
12131: if (defined($coursereply)) { return &get_reply($coursereply); }
12132: }
12133:
12134: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
12135: $env{'course.'.$courseid.'.domain'},
12136: 'course',$mapp,\$recursed,\@recurseup,
12137: $courseid,'.['.$section.'].',$spacequalifierrest,
12138: ([$seclevelr, 'resource'],
12139: [$seclevelm, 'map' ],
12140: [$secleveli, 'map' ],
12141: [$seclevel, 'course' ],
12142: [$courselevelr,'resource']));
12143: if (defined($coursereply)) { return &get_reply($coursereply); }
12144:
12145: # ------------------------------------------------------ third, check map parms
12146: my %parmhash=();
12147: my $thisparm='';
12148: if (tie(%parmhash,'GDBM_File',
12149: $env{'request.course.fn'}.'_parms.db',
12150: &GDBM_READER(),0640)) {
12151: $thisparm=$parmhash{$symbparm};
12152: untie(%parmhash);
12153: }
12154: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
12155: }
12156: # ------------------------------------------ fourth, look in resource metadata
12157:
12158: my $what = $spacequalifierrest;
12159: $what=~s/\./\_/;
12160: my $filename;
12161: if (!$symbparm) { $symbparm=&symbread(); }
12162: if ($symbparm) {
12163: $filename=(&decode_symb($symbparm))[2];
12164: } else {
12165: $filename=$env{'request.filename'};
12166: }
12167: my $toolsymb;
12168: if (($filename =~ /ext\.tool$/) && ($what ne '0_gradable')) {
12169: $toolsymb = $symbparm;
12170: }
12171: my $metadata=&metadata($filename,$what,$toolsymb);
12172: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
12173: $metadata=&metadata($filename,'parameter_'.$what,$toolsymb);
12174: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
12175:
12176: # ----------------------------------------------- fifth, look in rest of course
12177: if ($symbparm && defined($courseid) &&
12178: $courseid eq $env{'request.course.id'}) {
12179: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
12180: $env{'course.'.$courseid.'.domain'},
12181: 'course',$mapp,\$recursed,\@recurseup,
12182: $courseid,'.',$spacequalifierrest,
12183: ([$courselevelm,'map' ],
12184: [$courseleveli,'map' ],
12185: [$courselevel, 'course']));
12186: if (defined($coursereply)) { return &get_reply($coursereply); }
12187: }
12188: # ------------------------------------------------------------------ Cascade up
12189: unless ($space eq '0') {
12190: my @parts=split(/_/,$space);
12191: my $id=pop(@parts);
12192: my $part=join('_',@parts);
12193: if ($part eq '') { $part='0'; }
12194: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
12195: $symbparm,$udom,$uname,$section,1);
12196: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
12197: }
12198: if ($recurse) { return undef; }
12199: my $pack_def=&packages_tab_default($filename,$varname,$toolsymb);
12200: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
12201: # ---------------------------------------------------- Any other user namespace
12202: } elsif ($realm eq 'environment') {
12203: # ----------------------------------------------------------------- environment
12204: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
12205: return $env{'environment.'.$spacequalifierrest};
12206: } else {
12207: if ($uname eq 'anonymous' && $udom eq '') {
12208: return '';
12209: }
12210: my %returnhash=&userenvironment($udom,$uname,
12211: $spacequalifierrest);
12212: return $returnhash{$spacequalifierrest};
12213: }
12214: } elsif ($realm eq 'system') {
12215: # ----------------------------------------------------------------- system.time
12216: if ($space eq 'time') {
12217: return time;
12218: }
12219: } elsif ($realm eq 'server') {
12220: # ----------------------------------------------------------------- system.time
12221: if ($space eq 'name') {
12222: return $ENV{'SERVER_NAME'};
12223: }
12224: }
12225: return '';
12226: }
12227:
12228: sub get_reply {
12229: my ($reply_value) = @_;
12230: if (ref($reply_value) eq 'ARRAY') {
12231: if (wantarray) {
12232: return @$reply_value;
12233: }
12234: return $reply_value->[0];
12235: } else {
12236: return $reply_value;
12237: }
12238: }
12239:
12240: sub check_group_parms {
12241: my ($courseid,$groups,$symbparm,$recurseparm,$mapparm,$what,$mapp,
12242: $recursed,$recurseupref) = @_;
12243: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$recurseparm,'map'],
12244: [$what,'course']);
12245: my $coursereply;
12246: foreach my $group (@{$groups}) {
12247: my @groupitems = ();
12248: foreach my $level (@levels) {
12249: my $item = $courseid.'.['.$group.'].'.$level->[0];
12250: push(@groupitems,[$item,$level->[1]]);
12251: }
12252: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
12253: $env{'course.'.$courseid.'.domain'},
12254: 'course',$mapp,$recursed,$recurseupref,
12255: $courseid,'.['.$group.'].',$what,
12256: @groupitems);
12257: last if (defined($coursereply));
12258: }
12259: return $coursereply;
12260: }
12261:
12262: sub get_map_hierarchy {
12263: my ($mapname,$courseid) = @_;
12264: my @recurseup = ();
12265: if ($mapname) {
12266: if (($cachedmapkey eq $courseid) &&
12267: (abs($cachedmaptime-time)<5)) {
12268: if (ref($cachedmaps{$mapname}) eq 'ARRAY') {
12269: return @{$cachedmaps{$mapname}};
12270: }
12271: }
12272: my $navmap = Apache::lonnavmaps::navmap->new();
12273: if (ref($navmap)) {
12274: @recurseup = $navmap->recurseup_maps($mapname);
12275: undef($navmap);
12276: $cachedmaps{$mapname} = \@recurseup;
12277: $cachedmaptime=time;
12278: $cachedmapkey=$courseid;
12279: }
12280: }
12281: return @recurseup;
12282: }
12283:
12284: }
12285:
12286: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
12287: my ($courseid,@groups) = @_;
12288: @groups = sort(@groups);
12289: return @groups;
12290: }
12291:
12292: sub packages_tab_default {
12293: my ($uri,$varname,$toolsymb)=@_;
12294: my (undef,$part,$name)=split(/\./,$varname);
12295:
12296: my (@extension,@specifics,$do_default);
12297: foreach my $package (split(/,/,&metadata($uri,'packages',$toolsymb))) {
12298: my ($pack_type,$pack_part)=split(/_/,$package,2);
12299: if ($pack_type eq 'default') {
12300: $do_default=1;
12301: } elsif ($pack_type eq 'extension') {
12302: push(@extension,[$package,$pack_type,$pack_part]);
12303: } elsif ($pack_part eq $part || $pack_type eq 'part') {
12304: # only look at packages defaults for packages that this id is
12305: push(@specifics,[$package,$pack_type,$pack_part]);
12306: }
12307: }
12308: # first look for a package that matches the requested part id
12309: foreach my $package (@specifics) {
12310: my (undef,$pack_type,$pack_part)=@{$package};
12311: next if ($pack_part ne $part);
12312: if (defined($packagetab{"$pack_type&$name&default"})) {
12313: return $packagetab{"$pack_type&$name&default"};
12314: }
12315: }
12316: # look for any possible matching non extension_ package
12317: foreach my $package (@specifics) {
12318: my (undef,$pack_type,$pack_part)=@{$package};
12319: if (defined($packagetab{"$pack_type&$name&default"})) {
12320: return $packagetab{"$pack_type&$name&default"};
12321: }
12322: if ($pack_type eq 'part') { $pack_part='0'; }
12323: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
12324: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
12325: }
12326: }
12327: # look for any posible extension_ match
12328: foreach my $package (@extension) {
12329: my ($package,$pack_type)=@{$package};
12330: if (defined($packagetab{"$pack_type&$name&default"})) {
12331: return $packagetab{"$pack_type&$name&default"};
12332: }
12333: if (defined($packagetab{$package."&$name&default"})) {
12334: return $packagetab{$package."&$name&default"};
12335: }
12336: }
12337: # look for a global default setting
12338: if ($do_default && defined($packagetab{"default&$name&default"})) {
12339: return $packagetab{"default&$name&default"};
12340: }
12341: return undef;
12342: }
12343:
12344: sub add_prefix_and_part {
12345: my ($prefix,$part)=@_;
12346: my $keyroot;
12347: if (defined($prefix) && $prefix !~ /^__/) {
12348: # prefix that has a part already
12349: $keyroot=$prefix;
12350: } elsif (defined($prefix)) {
12351: # prefix that is missing a part
12352: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
12353: } else {
12354: # no prefix at all
12355: if (defined($part)) { $keyroot='_'.$part; }
12356: }
12357: return $keyroot;
12358: }
12359:
12360: # ---------------------------------------------------------------- Get metadata
12361:
12362: my %metaentry;
12363: my %importedpartids;
12364: my %importedrespids;
12365: sub metadata {
12366: my ($uri,$what,$toolsymb,$liburi,$prefix,$depthcount)=@_;
12367: $uri=&declutter($uri);
12368: # if it is a non metadata possible uri return quickly
12369: if (($uri eq '') ||
12370: (($uri =~ m|^/*adm/|) &&
12371: ($uri !~ m|^adm/includes|) && ($uri !~ m{/(smppg|bulletinboard|ext\.tool)$})) ||
12372: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
12373: return undef;
12374: }
12375: if (($uri =~ /^priv/ || $uri=~m{^home/httpd/html/priv})
12376: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
12377: return undef;
12378: }
12379: my $filename=$uri;
12380: $uri=~s/\.meta$//;
12381: #
12382: # Is the metadata already cached?
12383: # Look at timestamp of caching
12384: # Everything is cached by the main uri, libraries are never directly cached
12385: #
12386: if (!defined($liburi)) {
12387: my ($result,$cached)=&is_cached_new('meta',$uri);
12388: if (defined($cached)) { return $result->{':'.$what}; }
12389: }
12390:
12391: #
12392: # If the uri is for an external tool the file from
12393: # which metadata should be retrieved depends on whether
12394: # the tool had been configured to be gradable (set in the Course
12395: # Editor or Resource Editor).
12396: #
12397: # If a valid symb has been included as the third arg in the call
12398: # to &metadata() that can be used to retrieve the value of
12399: # parameter_0_gradable set for the resource, and included in the
12400: # uploaded map containing the tool. The value is retrieved via
12401: # &EXT(), if a valid symb is available. Otherwise the value of
12402: # gradable in the exttool_$marker.db file for the tool instance
12403: # is retrieved via &get().
12404: #
12405: # When lonuserstate::traceroute() calls lonnet::EXT() for
12406: # hiddenresource and encrypturl (during course initialization)
12407: # the map-level parameter for resource.0.gradable included in the
12408: # uploaded map containing the tool will not yet have been stored
12409: # in the user_course_parms.db file for the user's session, so in
12410: # this case fall back to retrieving gradable status from the
12411: # exttool_$marker.db file.
12412: #
12413: # In order to avoid an infinite loop, &metadata() will return
12414: # before a call to &EXT(), if the uri is for an external tool
12415: # and the $what for which metadata is being requested is
12416: # parameter_0_gradable or 0_gradable.
12417: #
12418:
12419: if ($uri =~ /ext\.tool$/) {
12420: if (($what eq 'parameter_0_gradable') || ($what eq '0_gradable')) {
12421: return;
12422: } else {
12423: my ($checked,$use_passback);
12424: if ($toolsymb ne '') {
12425: (undef,undef,my $tooluri) = &decode_symb($toolsymb);
12426: if (($tooluri eq $uri) && (&EXT('resource.0.gradable',$toolsymb))) {
12427: $checked = 1;
12428: if (&EXT('resource.0.gradable',$toolsymb) =~ /^yes$/i) {
12429: $use_passback = 1;
12430: }
12431: }
12432: }
12433: unless ($checked) {
12434: my ($ignore,$cdom,$cnum,$marker) = split(m{/},$uri);
12435: $marker=~s/\D//g;
12436: if ($marker) {
12437: my %toolsettings=&get('exttool_'.$marker,['gradable'],$cdom,$cnum);
12438: $use_passback = $toolsettings{'gradable'};
12439: }
12440: }
12441: if ($use_passback) {
12442: $filename = '/home/httpd/html/res/lib/templates/LTIpassback.tool';
12443: } else {
12444: $filename = '/home/httpd/html/res/lib/templates/LTIstandard.tool';
12445: }
12446: }
12447: }
12448:
12449: {
12450: # Imported parts would go here
12451: my @origfiletagids=();
12452: my $importedparts=0;
12453:
12454: # Imported responseids would go here
12455: my $importedresponses=0;
12456: #
12457: # Is this a recursive call for a library?
12458: #
12459: # if (! exists($metacache{$uri})) {
12460: # $metacache{$uri}={};
12461: # }
12462: my $cachetime = 60*60;
12463: if ($liburi) {
12464: $liburi=&declutter($liburi);
12465: $filename=$liburi;
12466: } else {
12467: &devalidate_cache_new('meta',$uri);
12468: undef(%metaentry);
12469: }
12470: my %metathesekeys=();
12471: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
12472: my $metastring;
12473: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
12474: my $which = &hreflocation('','/'.($liburi || $uri));
12475: $metastring =
12476: &Apache::lonnet::ssi_body($which,
12477: ('grade_target' => 'meta'));
12478: $cachetime = 1; # only want this cached in the child not long term
12479: } elsif (($uri !~ m -^(editupload)/-) &&
12480: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
12481: my $file=&filelocation('',&clutter($filename));
12482: #push(@{$metaentry{$uri.'.file'}},$file);
12483: $metastring=&getfile($file);
12484: }
12485: my $parser=HTML::LCParser->new(\$metastring);
12486: my $token;
12487: undef %metathesekeys;
12488: while ($token=$parser->get_token) {
12489: if ($token->[0] eq 'S') {
12490: if (defined($token->[2]->{'package'})) {
12491: #
12492: # This is a package - get package info
12493: #
12494: my $package=$token->[2]->{'package'};
12495: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
12496: if (defined($token->[2]->{'id'})) {
12497: $keyroot.='_'.$token->[2]->{'id'};
12498: }
12499: if ($metaentry{':packages'}) {
12500: $metaentry{':packages'}.=','.$package.$keyroot;
12501: } else {
12502: $metaentry{':packages'}=$package.$keyroot;
12503: }
12504: foreach my $pack_entry (keys(%packagetab)) {
12505: my $part=$keyroot;
12506: $part=~s/^\_//;
12507: if ($pack_entry=~/^\Q$package\E\&/ ||
12508: $pack_entry=~/^\Q$package\E_0\&/) {
12509: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
12510: # ignore package.tab specified default values
12511: # here &package_tab_default() will fetch those
12512: if ($subp eq 'default') { next; }
12513: my $value=$packagetab{$pack_entry};
12514: my $unikey;
12515: if ($pack =~ /_0$/) {
12516: $unikey='parameter_0_'.$name;
12517: $part=0;
12518: } else {
12519: $unikey='parameter'.$keyroot.'_'.$name;
12520: }
12521: if ($subp eq 'display') {
12522: $value.=' [Part: '.$part.']';
12523: }
12524: $metaentry{':'.$unikey.'.part'}=$part;
12525: $metathesekeys{$unikey}=1;
12526: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
12527: $metaentry{':'.$unikey.'.'.$subp}=$value;
12528: }
12529: if (defined($metaentry{':'.$unikey.'.default'})) {
12530: $metaentry{':'.$unikey}=
12531: $metaentry{':'.$unikey.'.default'};
12532: }
12533: }
12534: }
12535: } else {
12536: #
12537: # This is not a package - some other kind of start tag
12538: #
12539: my $entry=$token->[1];
12540: my $unikey='';
12541:
12542: if ($entry eq 'import') {
12543: #
12544: # Importing a library here
12545: #
12546: my $location=$parser->get_text('/import');
12547: my $dir=$filename;
12548: $dir=~s|[^/]*$||;
12549: $location=&filelocation($dir,$location);
12550:
12551: my $importid=$token->[2]->{'id'};
12552: my $importmode=$token->[2]->{'importmode'};
12553: #
12554: # Check metadata for imported file to
12555: # see if it contained response items
12556: #
12557: my ($origfile,@libfilekeys);
12558: my %currmetaentry = %metaentry;
12559: @libfilekeys = split(/,/,&metadata($location,'keys',undef,undef,undef,
12560: $depthcount+1));
12561: if (grep(/^responseorder$/,@libfilekeys)) {
12562: my $libresponseorder = &metadata($location,'responseorder',undef,undef,
12563: undef,$depthcount+1);
12564: if ($libresponseorder ne '') {
12565: if ($#origfiletagids<0) {
12566: undef(%importedrespids);
12567: undef(%importedpartids);
12568: }
12569: my @respids = split(/\s*,\s*/,$libresponseorder);
12570: if (@respids) {
12571: $importedrespids{$importid} = join(',',map { $importid.'_'.$_ } @respids);
12572: }
12573: if ($importedrespids{$importid} ne '') {
12574: $importedresponses = 1;
12575: # We need to get the original file and the imported file to get the response order correct
12576: # Load and inspect original file
12577: if ($#origfiletagids<0) {
12578: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
12579: $origfile=&getfile($origfilelocation);
12580: @origfiletagids=($origfile=~/<((?:\w+)response|import|part)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12581: }
12582: }
12583: }
12584: }
12585: # Do not overwrite contents of %metaentry hash for resource itself with
12586: # hash populated for imported library file
12587: %metaentry = %currmetaentry;
12588: undef(%currmetaentry);
12589: if ($importmode eq 'part') {
12590: # Import as part(s)
12591: $importedparts=1;
12592: # We need to get the original file and the imported file to get the part order correct
12593: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
12594: # Load and inspect original file if we didn't do that already
12595: if ($#origfiletagids<0) {
12596: undef(%importedrespids);
12597: undef(%importedpartids);
12598: if ($origfile eq '') {
12599: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
12600: $origfile=&getfile($origfilelocation);
12601: @origfiletagids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12602: }
12603: }
12604: my @impfilepartids;
12605: # If <partorder> tag is included in metadata for the imported file
12606: # get the parts in the imported file from that.
12607: if (grep(/^partorder$/,@libfilekeys)) {
12608: %currmetaentry = %metaentry;
12609: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
12610: $depthcount+1);
12611: %metaentry = %currmetaentry;
12612: undef(%currmetaentry);
12613: if ($libpartorder ne '') {
12614: @impfilepartids=split(/\s*,\s*/,$libpartorder);
12615: }
12616: } else {
12617: # If no <partorder> tag available, load and inspect imported file
12618: my $impfile=&getfile($location);
12619: @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12620: }
12621: if ($#impfilepartids>=0) {
12622: # This problem had parts
12623: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
12624: } else {
12625: # Importing by turning a single problem into a problem part
12626: # It gets the import-tags ID as part-ID
12627: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
12628: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
12629: }
12630: } else {
12631: # Import as problem or as normal import
12632: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
12633: unless ($importmode eq 'problem') {
12634: # Normal import
12635: if (defined($token->[2]->{'id'})) {
12636: $unikey.='_'.$token->[2]->{'id'};
12637: }
12638: }
12639: # Check metadata for imported file to
12640: # see if it contained parts
12641: if (grep(/^partorder$/,@libfilekeys)) {
12642: %currmetaentry = %metaentry;
12643: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
12644: $depthcount+1);
12645: %metaentry = %currmetaentry;
12646: undef(%currmetaentry);
12647: if ($libpartorder ne '') {
12648: $importedparts = 1;
12649: $importedpartids{$token->[2]->{'id'}}=$libpartorder;
12650: }
12651: }
12652: }
12653: if ($depthcount<20) {
12654: my $metadata =
12655: &metadata($uri,'keys',$toolsymb,$location,$unikey,
12656: $depthcount+1);
12657: foreach my $meta (split(',',$metadata)) {
12658: $metaentry{':'.$meta}=$metaentry{':'.$meta};
12659: $metathesekeys{$meta}=1;
12660: }
12661: }
12662: } else {
12663: #
12664: # Not importing, some other kind of non-package, non-library start tag
12665: #
12666: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
12667: if (defined($token->[2]->{'id'})) {
12668: $unikey.='_'.$token->[2]->{'id'};
12669: }
12670: if (defined($token->[2]->{'name'})) {
12671: $unikey.='_'.$token->[2]->{'name'};
12672: }
12673: $metathesekeys{$unikey}=1;
12674: foreach my $param (@{$token->[3]}) {
12675: $metaentry{':'.$unikey.'.'.$param} =
12676: $token->[2]->{$param};
12677: }
12678: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
12679: my $default=$metaentry{':'.$unikey.'.default'};
12680: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
12681: # only ws inside the tag, and not in default, so use default
12682: # as value
12683: $metaentry{':'.$unikey}=$default;
12684: } elsif ( $internaltext =~ /\S/ ) {
12685: # something interesting inside the tag
12686: $metaentry{':'.$unikey}=$internaltext;
12687: } else {
12688: # no interesting values, don't set a default
12689: }
12690: # end of not-a-package not-a-library import
12691: }
12692: # end of not-a-package start tag
12693: }
12694: # the next is the end of "start tag"
12695: }
12696: }
12697: my ($extension) = ($uri =~ /\.(\w+)$/);
12698: $extension = lc($extension);
12699: if ($extension eq 'htm') { $extension='html'; }
12700:
12701: foreach my $key (keys(%packagetab)) {
12702: #no specific packages #how's our extension
12703: if ($key!~/^extension_\Q$extension\E&/) { next; }
12704: &metadata_create_package_def($uri,$key,'extension_'.$extension,
12705: \%metathesekeys);
12706: }
12707:
12708: if (!exists($metaentry{':packages'})
12709: || $packagetab{"import_defaults&extension_$extension"}) {
12710: foreach my $key (keys(%packagetab)) {
12711: #no specific packages well let's get default then
12712: if ($key!~/^default&/) { next; }
12713: &metadata_create_package_def($uri,$key,'default',
12714: \%metathesekeys);
12715: }
12716: }
12717: # are there custom rights to evaluate
12718: if ($metaentry{':copyright'} eq 'custom') {
12719:
12720: #
12721: # Importing a rights file here
12722: #
12723: unless ($depthcount) {
12724: my $location=$metaentry{':customdistributionfile'};
12725: my $dir=$filename;
12726: $dir=~s|[^/]*$||;
12727: $location=&filelocation($dir,$location);
12728: my $rights_metadata =
12729: &metadata($uri,'keys',$toolsymb,$location,'_rights',
12730: $depthcount+1);
12731: foreach my $rights (split(',',$rights_metadata)) {
12732: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
12733: $metathesekeys{$rights}=1;
12734: }
12735: }
12736: }
12737: # uniqifiy package listing
12738: my %seen;
12739: my @uniq_packages =
12740: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
12741: $metaentry{':packages'} = join(',',@uniq_packages);
12742:
12743: if (($importedresponses) || ($importedparts)) {
12744: if ($importedparts) {
12745: # We had imported parts and need to rebuild partorder
12746: $metaentry{':partorder'}='';
12747: $metathesekeys{'partorder'}=1;
12748: }
12749: if ($importedresponses) {
12750: # We had imported responses and need to rebuil responseorder
12751: $metaentry{':responseorder'}='';
12752: $metathesekeys{'responseorder'}=1;
12753: }
12754: for (my $index=0;$index<$#origfiletagids;$index+=2) {
12755: my $origid = $origfiletagids[$index+1];
12756: if ($origfiletagids[$index] eq 'part') {
12757: # Original part, part of the problem
12758: if ($importedparts) {
12759: $metaentry{':partorder'}.=','.$origid;
12760: }
12761: } elsif ($origfiletagids[$index] eq 'import') {
12762: if ($importedparts) {
12763: # We have imported parts at this position
12764: if ($importedpartids{$origid} ne '') {
12765: $metaentry{':partorder'}.=','.$importedpartids{$origid};
12766: }
12767: }
12768: if ($importedresponses) {
12769: # We have imported responses at this position
12770: if ($importedrespids{$origid} ne '') {
12771: $metaentry{':responseorder'}.=','.$importedrespids{$origid};
12772: }
12773: }
12774: } else {
12775: # Original response item, part of the problem
12776: if ($importedresponses) {
12777: $metaentry{':responseorder'}.=','.$origid;
12778: }
12779: }
12780: }
12781: if ($importedparts) {
12782: $metaentry{':partorder'}=~s/^\,//;
12783: }
12784: if ($importedresponses) {
12785: $metaentry{':responseorder'}=~s/^\,//;
12786: }
12787: }
12788: $metaentry{':keys'} = join(',',keys(%metathesekeys));
12789: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
12790: $metaentry{':allpossiblekeys'}=join(',',keys(%metathesekeys));
12791: unless ($liburi) {
12792: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
12793: }
12794: # this is the end of "was not already recently cached
12795: }
12796: return $metaentry{':'.$what};
12797: }
12798:
12799: sub metadata_create_package_def {
12800: my ($uri,$key,$package,$metathesekeys)=@_;
12801: my ($pack,$name,$subp)=split(/\&/,$key);
12802: if ($subp eq 'default') { next; }
12803:
12804: if (defined($metaentry{':packages'})) {
12805: $metaentry{':packages'}.=','.$package;
12806: } else {
12807: $metaentry{':packages'}=$package;
12808: }
12809: my $value=$packagetab{$key};
12810: my $unikey;
12811: $unikey='parameter_0_'.$name;
12812: $metaentry{':'.$unikey.'.part'}=0;
12813: $$metathesekeys{$unikey}=1;
12814: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
12815: $metaentry{':'.$unikey.'.'.$subp}=$value;
12816: }
12817: if (defined($metaentry{':'.$unikey.'.default'})) {
12818: $metaentry{':'.$unikey}=
12819: $metaentry{':'.$unikey.'.default'};
12820: }
12821: }
12822:
12823: sub metadata_generate_part0 {
12824: my ($metadata,$metacache,$uri) = @_;
12825: my %allnames;
12826: foreach my $metakey (keys(%$metadata)) {
12827: if ($metakey=~/^parameter\_(.*)/) {
12828: my $part=$$metacache{':'.$metakey.'.part'};
12829: my $name=$$metacache{':'.$metakey.'.name'};
12830: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
12831: $allnames{$name}=$part;
12832: }
12833: }
12834: }
12835: foreach my $name (keys(%allnames)) {
12836: $$metadata{"parameter_0_$name"}=1;
12837: my $key=":parameter_0_$name";
12838: $$metacache{"$key.part"}='0';
12839: $$metacache{"$key.name"}=$name;
12840: $$metacache{"$key.type"}=$$metacache{':parameter_'.
12841: $allnames{$name}.'_'.$name.
12842: '.type'};
12843: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
12844: '.display'};
12845: my $expr='[Part: '.$allnames{$name}.']';
12846: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
12847: $$metacache{"$key.display"}=$olddis;
12848: }
12849: }
12850:
12851: # ------------------------------------------------------ Devalidate title cache
12852:
12853: sub devalidate_title_cache {
12854: my ($url)=@_;
12855: if (!$env{'request.course.id'}) { return; }
12856: my $symb=&symbread($url);
12857: if (!$symb) { return; }
12858: my $key=$env{'request.course.id'}."\0".$symb;
12859: &devalidate_cache_new('title',$key);
12860: }
12861:
12862: # ------------------------------------------------- Get the title of a course
12863:
12864: sub current_course_title {
12865: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
12866: }
12867: # ------------------------------------------------- Get the title of a resource
12868:
12869: sub gettitle {
12870: my $urlsymb=shift;
12871: my $symb=&symbread($urlsymb);
12872: if ($symb) {
12873: my $key=$env{'request.course.id'}."\0".$symb;
12874: my ($result,$cached)=&is_cached_new('title',$key);
12875: if (defined($cached)) {
12876: return $result;
12877: }
12878: my ($map,$resid,$url)=&decode_symb($symb);
12879: my $title='';
12880: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
12881: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
12882: } else {
12883: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12884: &GDBM_READER(),0640)) {
12885: my $mapid=$bighash{'map_pc_'.&clutter($map)};
12886: $title=$bighash{'title_'.$mapid.'.'.$resid};
12887: untie(%bighash);
12888: }
12889: }
12890: $title=~s/\&colon\;/\:/gs;
12891: if ($title) {
12892: # Remember both $symb and $title for dynamic metadata
12893: $accesshash{$symb.'___crstitle'}=$title;
12894: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
12895: # Cache this title and then return it
12896: return &do_cache_new('title',$key,$title,600);
12897: }
12898: $urlsymb=$url;
12899: }
12900: my $title=&metadata($urlsymb,'title');
12901: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
12902: return $title;
12903: }
12904:
12905: sub get_slot {
12906: my ($which,$cnum,$cdom)=@_;
12907: if (!$cnum || !$cdom) {
12908: (undef,my $courseid)=&whichuser();
12909: $cdom=$env{'course.'.$courseid.'.domain'};
12910: $cnum=$env{'course.'.$courseid.'.num'};
12911: }
12912: my $key=join("\0",'slots',$cdom,$cnum,$which);
12913: my %slotinfo;
12914: if (exists($remembered{$key})) {
12915: $slotinfo{$which} = $remembered{$key};
12916: } else {
12917: %slotinfo=&get('slots',[$which],$cdom,$cnum);
12918: &Apache::lonhomework::showhash(%slotinfo);
12919: my ($tmp)=keys(%slotinfo);
12920: if ($tmp=~/^error:/) { return (); }
12921: $remembered{$key} = $slotinfo{$which};
12922: }
12923: if (ref($slotinfo{$which}) eq 'HASH') {
12924: return %{$slotinfo{$which}};
12925: }
12926: return $slotinfo{$which};
12927: }
12928:
12929: sub get_reservable_slots {
12930: my ($cnum,$cdom,$uname,$udom) = @_;
12931: my $now = time;
12932: my $reservable_info;
12933: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
12934: if (exists($remembered{$key})) {
12935: $reservable_info = $remembered{$key};
12936: } else {
12937: my %resv;
12938: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
12939: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
12940: $reservable_info = \%resv;
12941: $remembered{$key} = $reservable_info;
12942: }
12943: return $reservable_info;
12944: }
12945:
12946: sub get_course_slots {
12947: my ($cnum,$cdom) = @_;
12948: my $hashid=$cnum.':'.$cdom;
12949: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
12950: if (defined($cached)) {
12951: if (ref($result) eq 'HASH') {
12952: return %{$result};
12953: }
12954: } else {
12955: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
12956: my ($tmp) = keys(%slots);
12957: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
12958: &do_cache_new('allslots',$hashid,\%slots,600);
12959: return %slots;
12960: }
12961: }
12962: return;
12963: }
12964:
12965: sub devalidate_slots_cache {
12966: my ($cnum,$cdom)=@_;
12967: my $hashid=$cnum.':'.$cdom;
12968: &devalidate_cache_new('allslots',$hashid);
12969: }
12970:
12971: sub get_coursechange {
12972: my ($cdom,$cnum) = @_;
12973: if ($cdom eq '' || $cnum eq '') {
12974: return unless ($env{'request.course.id'});
12975: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
12976: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
12977: }
12978: my $hashid=$cdom.'_'.$cnum;
12979: my ($change,$cached)=&is_cached_new('crschange',$hashid);
12980: if ((defined($cached)) && ($change ne '')) {
12981: return $change;
12982: } else {
12983: my %crshash;
12984: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
12985: if ($crshash{'internal.contentchange'} eq '') {
12986: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
12987: if ($change eq '') {
12988: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
12989: $change = $crshash{'internal.created'};
12990: }
12991: } else {
12992: $change = $crshash{'internal.contentchange'};
12993: }
12994: my $cachetime = 600;
12995: &do_cache_new('crschange',$hashid,$change,$cachetime);
12996: }
12997: return $change;
12998: }
12999:
13000: sub devalidate_coursechange_cache {
13001: my ($cnum,$cdom)=@_;
13002: my $hashid=$cnum.':'.$cdom;
13003: &devalidate_cache_new('crschange',$hashid);
13004: }
13005:
13006: # ------------------------------------------------- Update symbolic store links
13007:
13008: sub symblist {
13009: my ($mapname,%newhash)=@_;
13010: $mapname=&deversion(&declutter($mapname));
13011: my %hash;
13012: if (($env{'request.course.fn'}) && (%newhash)) {
13013: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
13014: &GDBM_WRCREAT(),0640)) {
13015: foreach my $url (keys(%newhash)) {
13016: next if ($url eq 'last_known'
13017: && $env{'form.no_update_last_known'});
13018: $hash{declutter($url)}=&encode_symb($mapname,
13019: $newhash{$url}->[1],
13020: $newhash{$url}->[0]);
13021: }
13022: if (untie(%hash)) {
13023: return 'ok';
13024: }
13025: }
13026: }
13027: return 'error';
13028: }
13029:
13030: # --------------------------------------------------------------- Verify a symb
13031:
13032: sub symbverify {
13033: my ($symb,$thisurl,$encstate)=@_;
13034: my $thisfn=$thisurl;
13035: $thisfn=&declutter($thisfn);
13036: # direct jump to resource in page or to a sequence - will construct own symbs
13037: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
13038: # check URL part
13039: my ($map,$resid,$url)=&decode_symb($symb);
13040:
13041: unless ($url eq $thisfn) { return 0; }
13042:
13043: $symb=&symbclean($symb);
13044: $thisurl=&deversion($thisurl);
13045: $thisfn=&deversion($thisfn);
13046:
13047: my %bighash;
13048: my $okay=0;
13049:
13050: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
13051: &GDBM_READER(),0640)) {
13052: my $noclutter;
13053: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
13054: $thisurl =~ s/\?.+$//;
13055: if ($map =~ m{^uploaded/.+\.page$}) {
13056: $thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
13057: $thisurl =~ s{^\Qhttp://https://\E}{https://};
13058: $noclutter = 1;
13059: }
13060: }
13061: my $ids;
13062: if ($noclutter) {
13063: $ids=$bighash{'ids_'.$thisurl};
13064: } else {
13065: $ids=$bighash{'ids_'.&clutter($thisurl)};
13066: }
13067: unless ($ids) {
13068: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
13069: $ids=$bighash{$idkey};
13070: }
13071: if ($ids) {
13072: # ------------------------------------------------------------------- Has ID(s)
13073: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
13074: $symb =~ s/\?.+$//;
13075: }
13076: foreach my $id (split(/\,/,$ids)) {
13077: my ($mapid,$resid)=split(/\./,$id);
13078: if (
13079: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
13080: eq $symb) {
13081: if (ref($encstate)) {
13082: $$encstate = $bighash{'encrypted_'.$id};
13083: }
13084: if (($env{'request.role.adv'}) ||
13085: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
13086: ($thisurl eq '/adm/navmaps')) {
13087: $okay=1;
13088: last;
13089: }
13090: }
13091: }
13092: }
13093: untie(%bighash);
13094: }
13095: return $okay;
13096: }
13097:
13098: # --------------------------------------------------------------- Clean-up symb
13099:
13100: sub symbclean {
13101: my $symb=shift;
13102: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
13103: # remove version from map
13104: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
13105:
13106: # remove version from URL
13107: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
13108:
13109: # remove wrapper
13110:
13111: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
13112: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
13113: return $symb;
13114: }
13115:
13116: # ---------------------------------------------- Split symb to find map and url
13117:
13118: sub encode_symb {
13119: my ($map,$resid,$url)=@_;
13120: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
13121: }
13122:
13123: sub decode_symb {
13124: my $symb=shift;
13125: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
13126: my ($map,$resid,$url)=split(/___/,$symb);
13127: return (&fixversion($map),$resid,&fixversion($url));
13128: }
13129:
13130: sub fixversion {
13131: my $fn=shift;
13132: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
13133: my %bighash;
13134: my $uri=&clutter($fn);
13135: my $key=$env{'request.course.id'}.'_'.$uri;
13136: # is this cached?
13137: my ($result,$cached)=&is_cached_new('courseresversion',$key);
13138: if (defined($cached)) { return $result; }
13139: # unfortunately not cached, or expired
13140: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
13141: &GDBM_READER(),0640)) {
13142: if ($bighash{'version_'.$uri}) {
13143: my $version=$bighash{'version_'.$uri};
13144: unless (($version eq 'mostrecent') ||
13145: ($version==&getversion($uri))) {
13146: $uri=~s/\.(\w+)$/\.$version\.$1/;
13147: }
13148: }
13149: untie %bighash;
13150: }
13151: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
13152: }
13153:
13154: sub deversion {
13155: my $url=shift;
13156: $url=~s/\.\d+\.(\w+)$/\.$1/;
13157: return $url;
13158: }
13159:
13160: # ------------------------------------------------------ Return symb list entry
13161:
13162: sub symbread {
13163: my ($thisfn,$donotrecurse,$ignorecachednull,$checkforblock,$possibles)=@_;
13164: my $cache_str='request.symbread.cached.'.$thisfn;
13165: if (defined($env{$cache_str})) {
13166: if ($ignorecachednull) {
13167: return $env{$cache_str} unless ($env{$cache_str} eq '');
13168: } else {
13169: return $env{$cache_str};
13170: }
13171: }
13172: # no filename provided? try from environment
13173: unless ($thisfn) {
13174: if ($env{'request.symb'}) {
13175: return $env{$cache_str}=&symbclean($env{'request.symb'});
13176: }
13177: $thisfn=$env{'request.filename'};
13178: }
13179: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
13180: # is that filename actually a symb? Verify, clean, and return
13181: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
13182: if (&symbverify($thisfn,$1)) {
13183: return $env{$cache_str}=&symbclean($thisfn);
13184: }
13185: }
13186: $thisfn=declutter($thisfn);
13187: my %hash;
13188: my %bighash;
13189: my $syval='';
13190: if (($env{'request.course.fn'}) && ($thisfn)) {
13191: my $targetfn = $thisfn;
13192: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
13193: $targetfn = 'adm/wrapper/'.$thisfn;
13194: }
13195: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
13196: $targetfn=$1;
13197: }
13198: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
13199: &GDBM_READER(),0640)) {
13200: $syval=$hash{$targetfn};
13201: untie(%hash);
13202: }
13203: # ---------------------------------------------------------- There was an entry
13204: if ($syval) {
13205: #unless ($syval=~/\_\d+$/) {
13206: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
13207: #&appenv({'request.ambiguous' => $thisfn});
13208: #return $env{$cache_str}='';
13209: #}
13210: #$syval.=$1;
13211: #}
13212: } else {
13213: # ------------------------------------------------------- Was not in symb table
13214: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
13215: &GDBM_READER(),0640)) {
13216: # ---------------------------------------------- Get ID(s) for current resource
13217: my $ids=$bighash{'ids_'.&clutter($thisfn)};
13218: unless ($ids) {
13219: $ids=$bighash{'ids_/'.$thisfn};
13220: }
13221: unless ($ids) {
13222: # alias?
13223: $ids=$bighash{'mapalias_'.$thisfn};
13224: }
13225: if ($ids) {
13226: # ------------------------------------------------------------------- Has ID(s)
13227: my @possibilities=split(/\,/,$ids);
13228: if ($#possibilities==0) {
13229: # ----------------------------------------------- There is only one possibility
13230: my ($mapid,$resid)=split(/\./,$ids);
13231: $syval=&encode_symb($bighash{'map_id_'.$mapid},
13232: $resid,$thisfn);
13233: if (ref($possibles) eq 'HASH') {
13234: $possibles->{$syval} = 1;
13235: }
13236: if ($checkforblock) {
13237: my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids});
13238: if (@blockers) {
13239: $syval = '';
13240: return;
13241: }
13242: }
13243: } elsif ((!$donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
13244: # ------------------------------------------ There is more than one possibility
13245: my $realpossible=0;
13246: foreach my $id (@possibilities) {
13247: my $file=$bighash{'src_'.$id};
13248: my $canaccess;
13249: if (($donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
13250: $canaccess = 1;
13251: } else {
13252: $canaccess = &allowed('bre',$file);
13253: }
13254: if ($canaccess) {
13255: my ($mapid,$resid)=split(/\./,$id);
13256: if ($bighash{'map_type_'.$mapid} ne 'page') {
13257: my $poss_syval=&encode_symb($bighash{'map_id_'.$mapid},
13258: $resid,$thisfn);
13259: if (ref($possibles) eq 'HASH') {
13260: $possibles->{$syval} = 1;
13261: }
13262: if ($checkforblock) {
13263: my @blockers = &has_comm_blocking('bre',$poss_syval,$file);
13264: unless (@blockers > 0) {
13265: $syval = $poss_syval;
13266: $realpossible++;
13267: }
13268: } else {
13269: $syval = $poss_syval;
13270: $realpossible++;
13271: }
13272: }
13273: }
13274: }
13275: if ($realpossible!=1) { $syval=''; }
13276: } else {
13277: $syval='';
13278: }
13279: }
13280: untie(%bighash);
13281: }
13282: }
13283: if ($syval) {
13284: return $env{$cache_str}=$syval;
13285: }
13286: }
13287: &appenv({'request.ambiguous' => $thisfn});
13288: return $env{$cache_str}='';
13289: }
13290:
13291: # ---------------------------------------------------------- Return random seed
13292:
13293: sub numval {
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: $txt=~s/\D//g;
13302: if ($_64bit) { if ($txt > 2**32) { return -1; } }
13303: return int($txt);
13304: }
13305:
13306: sub numval2 {
13307: my $txt=shift;
13308: $txt=~tr/A-J/0-9/;
13309: $txt=~tr/a-j/0-9/;
13310: $txt=~tr/K-T/0-9/;
13311: $txt=~tr/k-t/0-9/;
13312: $txt=~tr/U-Z/0-5/;
13313: $txt=~tr/u-z/0-5/;
13314: $txt=~s/\D//g;
13315: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
13316: my $total;
13317: foreach my $val (@txts) { $total+=$val; }
13318: if ($_64bit) { if ($total > 2**32) { return -1; } }
13319: return int($total);
13320: }
13321:
13322: sub numval3 {
13323: use integer;
13324: my $txt=shift;
13325: $txt=~tr/A-J/0-9/;
13326: $txt=~tr/a-j/0-9/;
13327: $txt=~tr/K-T/0-9/;
13328: $txt=~tr/k-t/0-9/;
13329: $txt=~tr/U-Z/0-5/;
13330: $txt=~tr/u-z/0-5/;
13331: $txt=~s/\D//g;
13332: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
13333: my $total;
13334: foreach my $val (@txts) { $total+=$val; }
13335: if ($_64bit) { $total=(($total<<32)>>32); }
13336: return $total;
13337: }
13338:
13339: sub digest {
13340: my ($data)=@_;
13341: my $digest=&Digest::MD5::md5($data);
13342: my ($a,$b,$c,$d)=unpack("iiii",$digest);
13343: my ($e,$f);
13344: {
13345: use integer;
13346: $e=($a+$b);
13347: $f=($c+$d);
13348: if ($_64bit) {
13349: $e=(($e<<32)>>32);
13350: $f=(($f<<32)>>32);
13351: }
13352: }
13353: if (wantarray) {
13354: return ($e,$f);
13355: } else {
13356: my $g;
13357: {
13358: use integer;
13359: $g=($e+$f);
13360: if ($_64bit) {
13361: $g=(($g<<32)>>32);
13362: }
13363: }
13364: return $g;
13365: }
13366: }
13367:
13368: sub latest_rnd_algorithm_id {
13369: return '64bit5';
13370: }
13371:
13372: sub get_rand_alg {
13373: my ($courseid)=@_;
13374: if (!$courseid) { $courseid=(&whichuser())[1]; }
13375: if ($courseid) {
13376: return $env{"course.$courseid.rndseed"};
13377: }
13378: return &latest_rnd_algorithm_id();
13379: }
13380:
13381: sub validCODE {
13382: my ($CODE)=@_;
13383: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
13384: return 0;
13385: }
13386:
13387: sub getCODE {
13388: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
13389: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
13390: defined($Apache::lonhomework::parsing_a_task) ) &&
13391: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
13392: return $Apache::lonhomework::history{'resource.CODE'};
13393: }
13394: return undef;
13395: }
13396: #
13397: # Determines the random seed for a specific context:
13398: #
13399: # parameters:
13400: # symb - in course context the symb for the seed.
13401: # course_id - The course id of the form domain_coursenum.
13402: # domain - Domain for the user.
13403: # course - Course for the user.
13404: # cenv - environment of the course.
13405: #
13406: # NOTE:
13407: # All parameters are picked out of the environment if missing
13408: # or not defined.
13409: # If a symb cannot be determined the current time is used instead.
13410: #
13411: # For a given well defined symb, courside, domain, username,
13412: # and course environment, the seed is reproducible.
13413: #
13414: sub rndseed {
13415: my ($symb,$courseid,$domain,$username, $cenv)=@_;
13416: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
13417: if (!defined($symb)) {
13418: unless ($symb=$wsymb) { return time; }
13419: }
13420: if (!defined $courseid) {
13421: $courseid=$wcourseid;
13422: }
13423: if (!defined $domain) { $domain=$wdomain; }
13424: if (!defined $username) { $username=$wusername }
13425:
13426: my $which;
13427: if (defined($cenv->{'rndseed'})) {
13428: $which = $cenv->{'rndseed'};
13429: } else {
13430: $which =&get_rand_alg($courseid);
13431: }
13432: if (defined(&getCODE())) {
13433:
13434: if ($which eq '64bit5') {
13435: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
13436: } elsif ($which eq '64bit4') {
13437: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
13438: } else {
13439: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
13440: }
13441: } elsif ($which eq '64bit5') {
13442: return &rndseed_64bit5($symb,$courseid,$domain,$username);
13443: } elsif ($which eq '64bit4') {
13444: return &rndseed_64bit4($symb,$courseid,$domain,$username);
13445: } elsif ($which eq '64bit3') {
13446: return &rndseed_64bit3($symb,$courseid,$domain,$username);
13447: } elsif ($which eq '64bit2') {
13448: return &rndseed_64bit2($symb,$courseid,$domain,$username);
13449: } elsif ($which eq '64bit') {
13450: return &rndseed_64bit($symb,$courseid,$domain,$username);
13451: }
13452: return &rndseed_32bit($symb,$courseid,$domain,$username);
13453: }
13454:
13455: sub rndseed_32bit {
13456: my ($symb,$courseid,$domain,$username)=@_;
13457: {
13458: use integer;
13459: my $symbchck=unpack("%32C*",$symb) << 27;
13460: my $symbseed=numval($symb) << 22;
13461: my $namechck=unpack("%32C*",$username) << 17;
13462: my $nameseed=numval($username) << 12;
13463: my $domainseed=unpack("%32C*",$domain) << 7;
13464: my $courseseed=unpack("%32C*",$courseid);
13465: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
13466: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13467: #&logthis("rndseed :$num:$symb");
13468: if ($_64bit) { $num=(($num<<32)>>32); }
13469: return $num;
13470: }
13471: }
13472:
13473: sub rndseed_64bit {
13474: my ($symb,$courseid,$domain,$username)=@_;
13475: {
13476: use integer;
13477: my $symbchck=unpack("%32S*",$symb) << 21;
13478: my $symbseed=numval($symb) << 10;
13479: my $namechck=unpack("%32S*",$username);
13480:
13481: my $nameseed=numval($username) << 21;
13482: my $domainseed=unpack("%32S*",$domain) << 10;
13483: my $courseseed=unpack("%32S*",$courseid);
13484:
13485: my $num1=$symbchck+$symbseed+$namechck;
13486: my $num2=$nameseed+$domainseed+$courseseed;
13487: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13488: #&logthis("rndseed :$num:$symb");
13489: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13490: return "$num1,$num2";
13491: }
13492: }
13493:
13494: sub rndseed_64bit2 {
13495: my ($symb,$courseid,$domain,$username)=@_;
13496: {
13497: use integer;
13498: # strings need to be an even # of cahracters long, it it is odd the
13499: # last characters gets thrown away
13500: my $symbchck=unpack("%32S*",$symb.' ') << 21;
13501: my $symbseed=numval($symb) << 10;
13502: my $namechck=unpack("%32S*",$username.' ');
13503:
13504: my $nameseed=numval($username) << 21;
13505: my $domainseed=unpack("%32S*",$domain.' ') << 10;
13506: my $courseseed=unpack("%32S*",$courseid.' ');
13507:
13508: my $num1=$symbchck+$symbseed+$namechck;
13509: my $num2=$nameseed+$domainseed+$courseseed;
13510: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13511: #&logthis("rndseed :$num:$symb");
13512: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13513: return "$num1,$num2";
13514: }
13515: }
13516:
13517: sub rndseed_64bit3 {
13518: my ($symb,$courseid,$domain,$username)=@_;
13519: {
13520: use integer;
13521: # strings need to be an even # of cahracters long, it it is odd the
13522: # last characters gets thrown away
13523: my $symbchck=unpack("%32S*",$symb.' ') << 21;
13524: my $symbseed=numval2($symb) << 10;
13525: my $namechck=unpack("%32S*",$username.' ');
13526:
13527: my $nameseed=numval2($username) << 21;
13528: my $domainseed=unpack("%32S*",$domain.' ') << 10;
13529: my $courseseed=unpack("%32S*",$courseid.' ');
13530:
13531: my $num1=$symbchck+$symbseed+$namechck;
13532: my $num2=$nameseed+$domainseed+$courseseed;
13533: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13534: #&logthis("rndseed :$num1:$num2:$_64bit");
13535: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13536:
13537: return "$num1:$num2";
13538: }
13539: }
13540:
13541: sub rndseed_64bit4 {
13542: my ($symb,$courseid,$domain,$username)=@_;
13543: {
13544: use integer;
13545: # strings need to be an even # of cahracters long, it it is odd the
13546: # last characters gets thrown away
13547: my $symbchck=unpack("%32S*",$symb.' ') << 21;
13548: my $symbseed=numval3($symb) << 10;
13549: my $namechck=unpack("%32S*",$username.' ');
13550:
13551: my $nameseed=numval3($username) << 21;
13552: my $domainseed=unpack("%32S*",$domain.' ') << 10;
13553: my $courseseed=unpack("%32S*",$courseid.' ');
13554:
13555: my $num1=$symbchck+$symbseed+$namechck;
13556: my $num2=$nameseed+$domainseed+$courseseed;
13557: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13558: #&logthis("rndseed :$num1:$num2:$_64bit");
13559: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13560:
13561: return "$num1:$num2";
13562: }
13563: }
13564:
13565: sub rndseed_64bit5 {
13566: my ($symb,$courseid,$domain,$username)=@_;
13567: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
13568: return "$num1:$num2";
13569: }
13570:
13571: sub rndseed_CODE_64bit {
13572: my ($symb,$courseid,$domain,$username)=@_;
13573: {
13574: use integer;
13575: my $symbchck=unpack("%32S*",$symb.' ') << 16;
13576: my $symbseed=numval2($symb);
13577: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
13578: my $CODEseed=numval(&getCODE());
13579: my $courseseed=unpack("%32S*",$courseid.' ');
13580: my $num1=$symbseed+$CODEchck;
13581: my $num2=$CODEseed+$courseseed+$symbchck;
13582: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
13583: #&logthis("rndseed :$num1:$num2:$symb");
13584: if ($_64bit) { $num1=(($num1<<32)>>32); }
13585: if ($_64bit) { $num2=(($num2<<32)>>32); }
13586: return "$num1:$num2";
13587: }
13588: }
13589:
13590: sub rndseed_CODE_64bit4 {
13591: my ($symb,$courseid,$domain,$username)=@_;
13592: {
13593: use integer;
13594: my $symbchck=unpack("%32S*",$symb.' ') << 16;
13595: my $symbseed=numval3($symb);
13596: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
13597: my $CODEseed=numval3(&getCODE());
13598: my $courseseed=unpack("%32S*",$courseid.' ');
13599: my $num1=$symbseed+$CODEchck;
13600: my $num2=$CODEseed+$courseseed+$symbchck;
13601: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
13602: #&logthis("rndseed :$num1:$num2:$symb");
13603: if ($_64bit) { $num1=(($num1<<32)>>32); }
13604: if ($_64bit) { $num2=(($num2<<32)>>32); }
13605: return "$num1:$num2";
13606: }
13607: }
13608:
13609: sub rndseed_CODE_64bit5 {
13610: my ($symb,$courseid,$domain,$username)=@_;
13611: my $code = &getCODE();
13612: my ($num1,$num2)=&digest("$symb,$courseid,$code");
13613: return "$num1:$num2";
13614: }
13615:
13616: sub setup_random_from_rndseed {
13617: my ($rndseed)=@_;
13618: if ($rndseed =~/([,:])/) {
13619: my ($num1,$num2) = map { abs($_); } (split(/[,:]/,$rndseed));
13620: if ((!$num1) || (!$num2) || ($num1 > 2147483562) || ($num2 > 2147483398)) {
13621: &Math::Random::random_set_seed_from_phrase($rndseed);
13622: } else {
13623: &Math::Random::random_set_seed($num1,$num2);
13624: }
13625: } else {
13626: &Math::Random::random_set_seed_from_phrase($rndseed);
13627: }
13628: }
13629:
13630: sub latest_receipt_algorithm_id {
13631: return 'receipt3';
13632: }
13633:
13634: sub recunique {
13635: my $fucourseid=shift;
13636: my $unique;
13637: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
13638: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
13639: $unique=$env{"course.$fucourseid.internal.encseed"};
13640: } else {
13641: $unique=$perlvar{'lonReceipt'};
13642: }
13643: return unpack("%32C*",$unique);
13644: }
13645:
13646: sub recprefix {
13647: my $fucourseid=shift;
13648: my $prefix;
13649: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
13650: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
13651: $prefix=$env{"course.$fucourseid.internal.encpref"};
13652: } else {
13653: $prefix=$perlvar{'lonHostID'};
13654: }
13655: return unpack("%32C*",$prefix);
13656: }
13657:
13658: sub ireceipt {
13659: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
13660:
13661: my $return =&recprefix($fucourseid).'-';
13662:
13663: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
13664: $env{'request.state'} eq 'construct') {
13665: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
13666: return $return;
13667: }
13668:
13669: my $cuname=unpack("%32C*",$funame);
13670: my $cudom=unpack("%32C*",$fudom);
13671: my $cucourseid=unpack("%32C*",$fucourseid);
13672: my $cusymb=unpack("%32C*",$fusymb);
13673: my $cunique=&recunique($fucourseid);
13674: my $cpart=unpack("%32S*",$part);
13675: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
13676:
13677: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
13678:
13679: $return.= ($cunique%$cuname+
13680: $cunique%$cudom+
13681: $cusymb%$cuname+
13682: $cusymb%$cudom+
13683: $cucourseid%$cuname+
13684: $cucourseid%$cudom+
13685: $cpart%$cuname+
13686: $cpart%$cudom);
13687: } else {
13688: $return.= ($cunique%$cuname+
13689: $cunique%$cudom+
13690: $cusymb%$cuname+
13691: $cusymb%$cudom+
13692: $cucourseid%$cuname+
13693: $cucourseid%$cudom);
13694: }
13695: return $return;
13696: }
13697:
13698: sub receipt {
13699: my ($part)=@_;
13700: my ($symb,$courseid,$domain,$name) = &whichuser();
13701: return &ireceipt($name,$domain,$courseid,$symb,$part);
13702: }
13703:
13704: sub whichuser {
13705: my ($passedsymb)=@_;
13706: my ($symb,$courseid,$domain,$name,$publicuser);
13707: if (defined($env{'form.grade_symb'})) {
13708: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
13709: my $allowed=&allowed('vgr',$tmp_courseid);
13710: if (!$allowed &&
13711: exists($env{'request.course.sec'}) &&
13712: $env{'request.course.sec'} !~ /^\s*$/) {
13713: $allowed=&allowed('vgr',$tmp_courseid.
13714: '/'.$env{'request.course.sec'});
13715: }
13716: if ($allowed) {
13717: ($symb)=&get_env_multiple('form.grade_symb');
13718: $courseid=$tmp_courseid;
13719: ($domain)=&get_env_multiple('form.grade_domain');
13720: ($name)=&get_env_multiple('form.grade_username');
13721: return ($symb,$courseid,$domain,$name,$publicuser);
13722: }
13723: }
13724: if (!$passedsymb) {
13725: $symb=&symbread();
13726: } else {
13727: $symb=$passedsymb;
13728: }
13729: $courseid=$env{'request.course.id'};
13730: $domain=$env{'user.domain'};
13731: $name=$env{'user.name'};
13732: if ($name eq 'public' && $domain eq 'public') {
13733: if (!defined($env{'form.username'})) {
13734: $env{'form.username'}.=time.rand(10000000);
13735: }
13736: $name.=$env{'form.username'};
13737: }
13738: return ($symb,$courseid,$domain,$name,$publicuser);
13739:
13740: }
13741:
13742: # ------------------------------------------------------------ Serves up a file
13743: # returns either the contents of the file or
13744: # -1 if the file doesn't exist
13745: #
13746: # if the target is a file that was uploaded via DOCS,
13747: # a check will be made to see if a current copy exists on the local server,
13748: # if it does this will be served, otherwise a copy will be retrieved from
13749: # the home server for the course and stored in /home/httpd/html/userfiles on
13750: # the local server.
13751:
13752: sub getfile {
13753: my ($file) = @_;
13754: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
13755: &repcopy($file);
13756: return &readfile($file);
13757: }
13758:
13759: sub repcopy_userfile {
13760: my ($file)=@_;
13761: my $londocroot = $perlvar{'lonDocRoot'};
13762: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
13763: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
13764: my ($cdom,$cnum,$filename) =
13765: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
13766: my $uri="/uploaded/$cdom/$cnum/$filename";
13767: if (-e "$file") {
13768: # we already have a local copy, check it out
13769: my @fileinfo = stat($file);
13770: my $rtncode;
13771: my $info;
13772: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
13773: if ($lwpresp ne 'ok') {
13774: # there is no such file anymore, even though we had a local copy
13775: if ($rtncode eq '404') {
13776: unlink($file);
13777: }
13778: return -1;
13779: }
13780: if ($info < $fileinfo[9]) {
13781: # nice, the file we have is up-to-date, just say okay
13782: return 'ok';
13783: } else {
13784: # the file is outdated, get rid of it
13785: unlink($file);
13786: }
13787: }
13788: # one way or the other, at this point, we don't have the file
13789: # construct the correct path for the file
13790: my @parts = ($cdom,$cnum);
13791: if ($filename =~ m|^(.+)/[^/]+$|) {
13792: push @parts, split(/\//,$1);
13793: }
13794: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
13795: foreach my $part (@parts) {
13796: $path .= '/'.$part;
13797: if (!-e $path) {
13798: mkdir($path,0770);
13799: }
13800: }
13801: # now the path exists for sure
13802: # get a user agent
13803: my $transferfile=$file.'.in.transfer';
13804: # FIXME: this should flock
13805: if (-e $transferfile) { return 'ok'; }
13806: my $request;
13807: $uri=~s/^\///;
13808: my $homeserver = &homeserver($cnum,$cdom);
13809: my $hostname = &hostname($homeserver);
13810: my $protocol = $protocol{$homeserver};
13811: $protocol = 'http' if ($protocol ne 'https');
13812: $request=new HTTP::Request('GET',$protocol.'://'.$hostname.'/raw/'.$uri);
13813: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,$transferfile,\%perlvar,'',0,1);
13814: # did it work?
13815: if ($response->is_error()) {
13816: unlink($transferfile);
13817: &logthis("Userfile repcopy failed for $uri");
13818: return -1;
13819: }
13820: # worked, rename the transfer file
13821: rename($transferfile,$file);
13822: return 'ok';
13823: }
13824:
13825: sub tokenwrapper {
13826: my $uri=shift;
13827: $uri=~s|^https?\://([^/]+)||;
13828: $uri=~s|^/||;
13829: $env{'user.environment'}=~/\/([^\/]+)\.id/;
13830: my $token=$1;
13831: my (undef,$udom,$uname,$file)=split('/',$uri,4);
13832: if ($udom && $uname && $file) {
13833: $file=~s|(\?\.*)*$||;
13834: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
13835: my $homeserver = &homeserver($uname,$udom);
13836: my $hostname = &hostname($homeserver);
13837: my $protocol = $protocol{$homeserver};
13838: $protocol = 'http' if ($protocol ne 'https');
13839: return $protocol.'://'.$hostname.'/'.$uri.
13840: (($uri=~/\?/)?'&':'?').'token='.$token.
13841: '&tokenissued='.$perlvar{'lonHostID'};
13842: } else {
13843: return '/adm/notfound.html';
13844: }
13845: }
13846:
13847: # call with reqtype HEAD: get last modification time
13848: # call with reqtype GET: get the file contents
13849: # Do not call this with reqtype GET for large files! It loads everything into memory
13850: #
13851: sub getuploaded {
13852: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
13853: $uri=~s/^\///;
13854: my $homeserver = &homeserver($cnum,$cdom);
13855: my $hostname = &hostname($homeserver);
13856: my $protocol = $protocol{$homeserver};
13857: $protocol = 'http' if ($protocol ne 'https');
13858: $uri = $protocol.'://'.$hostname.'/raw/'.$uri;
13859: my $request=new HTTP::Request($reqtype,$uri);
13860: my $response=&LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,'',0,1);
13861: $$rtncode = $response->code;
13862: if (! $response->is_success()) {
13863: return 'failed';
13864: }
13865: if ($reqtype eq 'HEAD') {
13866: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
13867: } elsif ($reqtype eq 'GET') {
13868: $$info = $response->content;
13869: }
13870: return 'ok';
13871: }
13872:
13873: sub readfile {
13874: my $file = shift;
13875: if ( (! -e $file ) || ($file eq '') ) { return -1; };
13876: my $fh;
13877: open($fh,"<",$file);
13878: my $a='';
13879: while (my $line = <$fh>) { $a .= $line; }
13880: return $a;
13881: }
13882:
13883: sub filelocation {
13884: my ($dir,$file) = @_;
13885: my $location;
13886: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
13887:
13888: if ($file =~ m-^/adm/-) {
13889: $file=~s-^/adm/wrapper/-/-;
13890: $file=~s-^/adm/coursedocs/showdoc/-/-;
13891: }
13892:
13893: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
13894: $location = $file;
13895: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
13896: my ($udom,$uname,$filename)=
13897: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
13898: my $home=&homeserver($uname,$udom);
13899: my $is_me=0;
13900: my @ids=¤t_machine_ids();
13901: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
13902: if ($is_me) {
13903: $location=propath($udom,$uname).'/userfiles/'.$filename;
13904: } else {
13905: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
13906: $udom.'/'.$uname.'/'.$filename;
13907: }
13908: } elsif ($file =~ m-^/adm/-) {
13909: $location = $perlvar{'lonDocRoot'}.'/'.$file;
13910: } else {
13911: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
13912: $file=~s:^/(res|priv)/:/:;
13913: my $space=$1;
13914: if ( !( $file =~ m:^/:) ) {
13915: $location = $dir. '/'.$file;
13916: } else {
13917: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
13918: }
13919: }
13920: $location=~s://+:/:g; # remove duplicate /
13921: while ($location=~m{/\.\./}) {
13922: if ($location =~ m{/[^/]+/\.\./}) {
13923: $location=~ s{/[^/]+/\.\./}{/}g;
13924: } else {
13925: $location=~ s{/\.\./}{/}g;
13926: }
13927: } #remove dir/..
13928: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
13929: return $location;
13930: }
13931:
13932: sub hreflocation {
13933: my ($dir,$file)=@_;
13934: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
13935: $file=filelocation($dir,$file);
13936: } elsif ($file=~m-^/adm/-) {
13937: $file=~s-^/adm/wrapper/-/-;
13938: $file=~s-^/adm/coursedocs/showdoc/-/-;
13939: }
13940: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
13941: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
13942: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
13943: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
13944: {/uploaded/$1/$2/}x;
13945: }
13946: if ($file=~ m{^/userfiles/}) {
13947: $file =~ s{^/userfiles/}{/uploaded/};
13948: }
13949: return $file;
13950: }
13951:
13952:
13953:
13954:
13955:
13956: sub current_machine_domains {
13957: return &machine_domains(&hostname($perlvar{'lonHostID'}));
13958: }
13959:
13960: sub machine_domains {
13961: my ($hostname) = @_;
13962: my @domains;
13963: my %hostname = &all_hostnames();
13964: while( my($id, $name) = each(%hostname)) {
13965: # &logthis("-$id-$name-$hostname-");
13966: if ($hostname eq $name) {
13967: push(@domains,&host_domain($id));
13968: }
13969: }
13970: return @domains;
13971: }
13972:
13973: sub current_machine_ids {
13974: return &machine_ids(&hostname($perlvar{'lonHostID'}));
13975: }
13976:
13977: sub machine_ids {
13978: my ($hostname) = @_;
13979: $hostname ||= &hostname($perlvar{'lonHostID'});
13980: my @ids;
13981: my %name_to_host = &all_names();
13982: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
13983: return @{ $name_to_host{$hostname} };
13984: }
13985: return;
13986: }
13987:
13988: sub additional_machine_domains {
13989: my @domains;
13990: open(my $fh,"<","$perlvar{'lonTabDir'}/expected_domains.tab");
13991: while( my $line = <$fh>) {
13992: $line =~ s/\s//g;
13993: push(@domains,$line);
13994: }
13995: return @domains;
13996: }
13997:
13998: sub default_login_domain {
13999: my $domain = $perlvar{'lonDefDomain'};
14000: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
14001: foreach my $posdom (¤t_machine_domains(),
14002: &additional_machine_domains()) {
14003: if (lc($posdom) eq lc($testdomain)) {
14004: $domain=$posdom;
14005: last;
14006: }
14007: }
14008: return $domain;
14009: }
14010:
14011: sub uses_sts {
14012: my ($ignore_cache) = @_;
14013: my $lonhost = $perlvar{'lonHostID'};
14014: my $hostname = &hostname($lonhost);
14015: my $sts_on;
14016: if ($protocol{$lonhost} eq 'https') {
14017: my $cachetime = 12*3600;
14018: if (!$ignore_cache) {
14019: ($sts_on,my $cached)=&is_cached_new('stspolicy',$lonhost);
14020: if (defined($cached)) {
14021: return $sts_on;
14022: }
14023: }
14024: my $url = $protocol{$lonhost}.'://'.$hostname.'/index.html';
14025: my $request=new HTTP::Request('HEAD',$url);
14026: my $response=&LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,'','','',1);
14027: if ($response->is_success) {
14028: my $has_sts = $response->header('Strict-Transport-Security');
14029: if ($has_sts eq '') {
14030: $sts_on = 0;
14031: } else {
14032: if ($has_sts =~ /\Qmax-age=\E(\d+)/) {
14033: my $maxage = $1;
14034: if ($maxage) {
14035: $sts_on = 1;
14036: } else {
14037: $sts_on = 0;
14038: }
14039: } else {
14040: $sts_on = 0;
14041: }
14042: }
14043: return &do_cache_new('stspolicy',$lonhost,$sts_on,$cachetime);
14044: }
14045: }
14046: return;
14047: }
14048:
14049: # ------------------------------------------------------------- Declutters URLs
14050:
14051: sub declutter {
14052: my $thisfn=shift;
14053: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
14054: unless ($thisfn=~m{^/home/httpd/html/priv/}) {
14055: $thisfn=~s{^/home/httpd/html}{};
14056: }
14057: $thisfn=~s/^\///;
14058: $thisfn=~s|^adm/wrapper/||;
14059: $thisfn=~s|^adm/coursedocs/showdoc/||;
14060: $thisfn=~s/^res\///;
14061: $thisfn=~s/^priv\///;
14062: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
14063: $thisfn=~s/\?.+$//;
14064: }
14065: return $thisfn;
14066: }
14067:
14068: # ------------------------------------------------------------- Clutter up URLs
14069:
14070: sub clutter {
14071: my $thisfn='/'.&declutter(shift);
14072: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
14073: || $thisfn =~ m{^/adm/(includes|pages)} ) {
14074: $thisfn='/res'.$thisfn;
14075: }
14076: if ($thisfn !~m|^/adm|) {
14077: if ($thisfn =~ m|^/ext/|) {
14078: $thisfn='/adm/wrapper'.$thisfn;
14079: } else {
14080: my ($ext) = ($thisfn =~ /\.(\w+)$/);
14081: my $embstyle=&Apache::loncommon::fileembstyle($ext);
14082: if ($embstyle eq 'ssi'
14083: || ($embstyle eq 'hdn')
14084: || ($embstyle eq 'rat')
14085: || ($embstyle eq 'prv')
14086: || ($embstyle eq 'ign')) {
14087: #do nothing with these
14088: } elsif (($embstyle eq 'img')
14089: || ($embstyle eq 'emb')
14090: || ($embstyle eq 'wrp')) {
14091: $thisfn='/adm/wrapper'.$thisfn;
14092: } elsif ($embstyle eq 'unk'
14093: && $thisfn!~/\.(sequence|page)$/) {
14094: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
14095: } else {
14096: # &logthis("Got a blank emb style");
14097: }
14098: }
14099: } elsif ($thisfn =~ m{^/adm/$match_domain/$match_courseid/\d+/ext\.tool$}) {
14100: $thisfn='/adm/wrapper'.$thisfn;
14101: }
14102: return $thisfn;
14103: }
14104:
14105: sub clutter_with_no_wrapper {
14106: my $uri = &clutter(shift);
14107: if ($uri =~ m-^/adm/-) {
14108: $uri =~ s-^/adm/wrapper/-/-;
14109: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
14110: }
14111: return $uri;
14112: }
14113:
14114: sub freeze_escape {
14115: my ($value)=@_;
14116: if (ref($value)) {
14117: $value=&nfreeze($value);
14118: return '__FROZEN__'.&escape($value);
14119: }
14120: return &escape($value);
14121: }
14122:
14123:
14124: sub thaw_unescape {
14125: my ($value)=@_;
14126: if ($value =~ /^__FROZEN__/) {
14127: substr($value,0,10,undef);
14128: $value=&unescape($value);
14129: return &thaw($value);
14130: }
14131: return &unescape($value);
14132: }
14133:
14134: sub correct_line_ends {
14135: my ($result)=@_;
14136: $$result =~s/\r\n/\n/mg;
14137: $$result =~s/\r/\n/mg;
14138: }
14139: # ================================================================ Main Program
14140:
14141: sub goodbye {
14142: &logthis("Starting Shut down");
14143: #not converted to using infrastruture and probably shouldn't be
14144: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
14145: #converted
14146: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
14147: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
14148: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
14149: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
14150: #1.1 only
14151: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
14152: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
14153: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
14154: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
14155: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
14156: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
14157: &logthis(sprintf("%-20s is %s",'hits',$hits));
14158: &flushcourselogs();
14159: &logthis("Shutting down");
14160: }
14161:
14162: sub get_dns {
14163: my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
14164: if (!$ignore_cache) {
14165: my ($content,$cached)=
14166: &Apache::lonnet::is_cached_new('dns',$url);
14167: if ($cached) {
14168: &$func($content,$hashref);
14169: return;
14170: }
14171: }
14172:
14173: my %alldns;
14174: if (open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab")) {
14175: foreach my $dns (<$config>) {
14176: next if ($dns !~ /^\^(\S*)/x);
14177: my $line = $1;
14178: my ($host,$protocol) = split(/:/,$line);
14179: if ($protocol ne 'https') {
14180: $protocol = 'http';
14181: }
14182: $alldns{$host} = $protocol;
14183: }
14184: close($config);
14185: }
14186: while (%alldns) {
14187: my ($dns) = sort { $b cmp $a } keys(%alldns);
14188: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
14189: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar,30,0);
14190: delete($alldns{$dns});
14191: next if ($response->is_error());
14192: if ($url eq '/adm/dns/loncapaCRL') {
14193: return &$func($response);
14194: } else {
14195: my @content = split("\n",$response->content);
14196: unless ($nocache) {
14197: &do_cache_new('dns',$url,\@content,30*24*60*60);
14198: }
14199: &$func(\@content,$hashref);
14200: return;
14201: }
14202: }
14203: my $which = (split('/',$url,4))[3];
14204: if ($which eq 'loncapaCRL') {
14205: my $diskfile = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
14206: if (-e $diskfile) {
14207: &logthis("unable to contact DNS, on disk file $diskfile not updated");
14208: } else {
14209: &logthis("unable to contact DNS, no on disk file $diskfile available");
14210: }
14211: } else {
14212: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
14213: if (open(my $config,"<","$perlvar{'lonTabDir'}/dns_$which.tab")) {
14214: my @content = <$config>;
14215: close($config);
14216: &$func(\@content,$hashref);
14217: }
14218: }
14219: return;
14220: }
14221:
14222: # ------------------------------------------------------Get DNS checksums file
14223: sub parse_dns_checksums_tab {
14224: my ($lines,$hashref) = @_;
14225: my $lonhost = $perlvar{'lonHostID'};
14226: my $machine_dom = &Apache::lonnet::host_domain($lonhost);
14227: my $loncaparev = &get_server_loncaparev($machine_dom);
14228: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
14229: my $webconfdir = '/etc/httpd/conf';
14230: if ($distro =~ /^(ubuntu|debian)(\d+)$/) {
14231: $webconfdir = '/etc/apache2';
14232: } elsif ($distro =~ /^sles(\d+)$/) {
14233: if ($1 >= 10) {
14234: $webconfdir = '/etc/apache2';
14235: }
14236: } elsif ($distro =~ /^suse(\d+\.\d+)$/) {
14237: if ($1 >= 10.0) {
14238: $webconfdir = '/etc/apache2';
14239: }
14240: }
14241: my ($release,$timestamp) = split(/\-/,$loncaparev);
14242: my (%chksum,%revnum);
14243: if (ref($lines) eq 'ARRAY') {
14244: chomp(@{$lines});
14245: my $version = shift(@{$lines});
14246: if ($version eq $release) {
14247: foreach my $line (@{$lines}) {
14248: my ($file,$version,$shasum) = split(/,/,$line);
14249: if ($file =~ m{^/etc/httpd/conf}) {
14250: if ($webconfdir eq '/etc/apache2') {
14251: $file =~ s{^\Q/etc/httpd/conf/\E}{$webconfdir/};
14252: }
14253: }
14254: $chksum{$file} = $shasum;
14255: $revnum{$file} = $version;
14256: }
14257: if (ref($hashref) eq 'HASH') {
14258: %{$hashref} = (
14259: sums => \%chksum,
14260: versions => \%revnum,
14261: );
14262: }
14263: }
14264: }
14265: return;
14266: }
14267:
14268: sub fetch_dns_checksums {
14269: my %checksums;
14270: my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
14271: my $loncaparev = &get_server_loncaparev($machine_dom,$perlvar{'lonHostID'});
14272: my ($release,$timestamp) = split(/\-/,$loncaparev);
14273: &get_dns("/adm/dns/checksums/$release",\&parse_dns_checksums_tab,1,1,
14274: \%checksums);
14275: return \%checksums;
14276: }
14277:
14278: sub fetch_crl_pemfile {
14279: return &get_dns("/adm/dns/loncapaCRL",\&save_crl_pem,1,1);
14280: }
14281:
14282: sub save_crl_pem {
14283: my ($response) = @_;
14284: my ($msg,$hadchanges);
14285: if (ref($response)) {
14286: my $now = time;
14287: my $lonca = $perlvar{'lonCertificateDirectory'}.'/'.$perlvar{'lonnetCertificateAuthority'};
14288: my $tmpcrl = $tmpdir.'/'.$perlvar{'lonnetCertRevocationList'}.'_'.$now.'.'.$$.'.tmp';
14289: if (open(my $fh,'>',"$tmpcrl")) {
14290: print $fh $response->content;
14291: close($fh);
14292: if (-e $lonca) {
14293: if (open(PIPE,"openssl crl -in $tmpcrl -inform pem -CAfile $lonca -noout 2>&1 |")) {
14294: my $check = <PIPE>;
14295: close(PIPE);
14296: chomp($check);
14297: if ($check eq 'verify OK') {
14298: my $dest = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
14299: my $backup;
14300: if (-e $dest) {
14301: if (&File::Copy::move($dest,"$dest.bak")) {
14302: $backup = 'ok';
14303: }
14304: }
14305: if (&File::Copy::move($tmpcrl,$dest)) {
14306: $msg = 'ok';
14307: if ($backup) {
14308: my (%oldnums,%newnums);
14309: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest.bak |grep 'Serial Number' |")) {
14310: while (<PIPE>) {
14311: $oldnums{(split(/:/))[1]} = 1;
14312: }
14313: close(PIPE);
14314: }
14315: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest |grep 'Serial Number' |")) {
14316: while(<PIPE>) {
14317: $newnums{(split(/:/))[1]} = 1;
14318: }
14319: close(PIPE);
14320: }
14321: foreach my $key (sort {$b <=> $a } (keys(%newnums))) {
14322: unless (exists($oldnums{$key})) {
14323: $hadchanges = 1;
14324: last;
14325: }
14326: }
14327: unless ($hadchanges) {
14328: foreach my $key (sort {$b <=> $a } (keys(%oldnums))) {
14329: unless (exists($newnums{$key})) {
14330: $hadchanges = 1;
14331: last;
14332: }
14333: }
14334: }
14335: }
14336: }
14337: } else {
14338: unlink($tmpcrl);
14339: }
14340: } else {
14341: unlink($tmpcrl);
14342: }
14343: } else {
14344: unlink($tmpcrl);
14345: }
14346: }
14347: }
14348: return ($msg,$hadchanges);
14349: }
14350:
14351: # ------------------------------------------------------------ Read domain file
14352: {
14353: my $loaded;
14354: my %domain;
14355:
14356: sub parse_domain_tab {
14357: my ($lines) = @_;
14358: foreach my $line (@$lines) {
14359: next if ($line =~ /^(\#|\s*$ )/x);
14360:
14361: chomp($line);
14362: my ($name,@elements) = split(/:/,$line,9);
14363: my %this_domain;
14364: foreach my $field ('description', 'auth_def', 'auth_arg_def',
14365: 'lang_def', 'city', 'longi', 'lati',
14366: 'primary') {
14367: $this_domain{$field} = shift(@elements);
14368: }
14369: $domain{$name} = \%this_domain;
14370: }
14371: }
14372:
14373: sub reset_domain_info {
14374: undef($loaded);
14375: undef(%domain);
14376: }
14377:
14378: sub load_domain_tab {
14379: my ($ignore_cache,$nocache) = @_;
14380: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache,$nocache);
14381: my $fh;
14382: if (open($fh,"<",$perlvar{'lonTabDir'}.'/domain.tab')) {
14383: my @lines = <$fh>;
14384: &parse_domain_tab(\@lines);
14385: }
14386: close($fh);
14387: $loaded = 1;
14388: }
14389:
14390: sub domain {
14391: &load_domain_tab() if (!$loaded);
14392:
14393: my ($name,$what) = @_;
14394: return if ( !exists($domain{$name}) );
14395:
14396: if (!$what) {
14397: return $domain{$name}{'description'};
14398: }
14399: return $domain{$name}{$what};
14400: }
14401:
14402: sub domain_info {
14403: &load_domain_tab() if (!$loaded);
14404: return %domain;
14405: }
14406:
14407: }
14408:
14409:
14410: # ------------------------------------------------------------- Read hosts file
14411: {
14412: my %hostname;
14413: my %hostdom;
14414: my %libserv;
14415: my $loaded;
14416: my %name_to_host;
14417: my %internetdom;
14418: my %LC_dns_serv;
14419:
14420: sub parse_hosts_tab {
14421: my ($file) = @_;
14422: foreach my $configline (@$file) {
14423: next if ($configline =~ /^(\#|\s*$ )/x);
14424: chomp($configline);
14425: if ($configline =~ /^\^/) {
14426: if ($configline =~ /^\^([\w.\-]+)/) {
14427: $LC_dns_serv{$1} = 1;
14428: }
14429: next;
14430: }
14431: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
14432: $name=~s/\s//g;
14433: if ($id && $domain && $role && $name) {
14434: if ((exists($hostname{$id})) && ($hostname{$id} ne '')) {
14435: my $curr = $hostname{$id};
14436: my $skip;
14437: if (ref($name_to_host{$curr}) eq 'ARRAY') {
14438: if (($curr eq $name) && (@{$name_to_host{$curr}} == 1)) {
14439: $skip = 1;
14440: } else {
14441: @{$name_to_host{$curr}} = grep { $_ ne $id } @{$name_to_host{$curr}};
14442: }
14443: }
14444: unless ($skip) {
14445: push(@{$name_to_host{$name}},$id);
14446: }
14447: } else {
14448: push(@{$name_to_host{$name}},$id);
14449: }
14450: $hostname{$id}=$name;
14451: $hostdom{$id}=$domain;
14452: if ($role eq 'library') { $libserv{$id}=$name; }
14453: if (defined($protocol)) {
14454: if ($protocol eq 'https') {
14455: $protocol{$id} = $protocol;
14456: } else {
14457: $protocol{$id} = 'http';
14458: }
14459: } else {
14460: $protocol{$id} = 'http';
14461: }
14462: if (defined($intdom)) {
14463: $internetdom{$id} = $intdom;
14464: }
14465: }
14466: }
14467: }
14468:
14469: sub reset_hosts_info {
14470: &purge_remembered();
14471: &reset_domain_info();
14472: &reset_hosts_ip_info();
14473: undef(%internetdom);
14474: undef(%name_to_host);
14475: undef(%hostname);
14476: undef(%hostdom);
14477: undef(%libserv);
14478: undef($loaded);
14479: }
14480:
14481: sub load_hosts_tab {
14482: my ($ignore_cache,$nocache) = @_;
14483: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache,$nocache);
14484: open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab");
14485: my @config = <$config>;
14486: &parse_hosts_tab(\@config);
14487: close($config);
14488: $loaded=1;
14489: }
14490:
14491: sub hostname {
14492: &load_hosts_tab() if (!$loaded);
14493:
14494: my ($lonid) = @_;
14495: return $hostname{$lonid};
14496: }
14497:
14498: sub all_hostnames {
14499: &load_hosts_tab() if (!$loaded);
14500:
14501: return %hostname;
14502: }
14503:
14504: sub all_names {
14505: my ($ignore_cache,$nocache) = @_;
14506: &load_hosts_tab($ignore_cache,$nocache) if (!$loaded);
14507:
14508: return %name_to_host;
14509: }
14510:
14511: sub all_host_domain {
14512: &load_hosts_tab() if (!$loaded);
14513: return %hostdom;
14514: }
14515:
14516: sub all_host_intdom {
14517: &load_hosts_tab() if (!$loaded);
14518: return %internetdom;
14519: }
14520:
14521: sub is_library {
14522: &load_hosts_tab() if (!$loaded);
14523:
14524: return exists($libserv{$_[0]});
14525: }
14526:
14527: sub all_library {
14528: &load_hosts_tab() if (!$loaded);
14529:
14530: return %libserv;
14531: }
14532:
14533: sub unique_library {
14534: #2x reverse removes all hostnames that appear more than once
14535: my %unique = reverse &all_library();
14536: return reverse %unique;
14537: }
14538:
14539: sub get_servers {
14540: &load_hosts_tab() if (!$loaded);
14541:
14542: my ($domain,$type) = @_;
14543: my %possible_hosts = ($type eq 'library') ? %libserv
14544: : %hostname;
14545: my %result;
14546: if (ref($domain) eq 'ARRAY') {
14547: while ( my ($host,$hostname) = each(%possible_hosts)) {
14548: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
14549: $result{$host} = $hostname;
14550: }
14551: }
14552: } else {
14553: while ( my ($host,$hostname) = each(%possible_hosts)) {
14554: if ($hostdom{$host} eq $domain) {
14555: $result{$host} = $hostname;
14556: }
14557: }
14558: }
14559: return %result;
14560: }
14561:
14562: sub get_unique_servers {
14563: my %unique = reverse &get_servers(@_);
14564: return reverse %unique;
14565: }
14566:
14567: sub host_domain {
14568: &load_hosts_tab() if (!$loaded);
14569:
14570: my ($lonid) = @_;
14571: return $hostdom{$lonid};
14572: }
14573:
14574: sub all_domains {
14575: &load_hosts_tab() if (!$loaded);
14576:
14577: my %seen;
14578: my @uniq = grep(!$seen{$_}++, values(%hostdom));
14579: return @uniq;
14580: }
14581:
14582: sub internet_dom {
14583: &load_hosts_tab() if (!$loaded);
14584:
14585: my ($lonid) = @_;
14586: return $internetdom{$lonid};
14587: }
14588:
14589: sub is_LC_dns {
14590: &load_hosts_tab() if (!$loaded);
14591:
14592: my ($hostname) = @_;
14593: return exists($LC_dns_serv{$hostname});
14594: }
14595:
14596: }
14597:
14598: {
14599: my %iphost;
14600: my %name_to_ip;
14601: my %lonid_to_ip;
14602:
14603: sub get_hosts_from_ip {
14604: my ($ip) = @_;
14605: my %iphosts = &get_iphost();
14606: if (ref($iphosts{$ip})) {
14607: return @{$iphosts{$ip}};
14608: }
14609: return;
14610: }
14611:
14612: sub reset_hosts_ip_info {
14613: undef(%iphost);
14614: undef(%name_to_ip);
14615: undef(%lonid_to_ip);
14616: }
14617:
14618: sub get_host_ip {
14619: my ($lonid) = @_;
14620: if (exists($lonid_to_ip{$lonid})) {
14621: return $lonid_to_ip{$lonid};
14622: }
14623: my $name=&hostname($lonid);
14624: my $ip = gethostbyname($name);
14625: return if (!$ip || length($ip) ne 4);
14626: $ip=inet_ntoa($ip);
14627: $name_to_ip{$name} = $ip;
14628: $lonid_to_ip{$lonid} = $ip;
14629: return $ip;
14630: }
14631:
14632: sub get_iphost {
14633: my ($ignore_cache,$nocache) = @_;
14634:
14635: if (!$ignore_cache) {
14636: if (%iphost) {
14637: return %iphost;
14638: }
14639: my ($ip_info,$cached)=
14640: &Apache::lonnet::is_cached_new('iphost','iphost');
14641: if ($cached) {
14642: %iphost = %{$ip_info->[0]};
14643: %name_to_ip = %{$ip_info->[1]};
14644: %lonid_to_ip = %{$ip_info->[2]};
14645: return %iphost;
14646: }
14647: }
14648:
14649: # get yesterday's info for fallback
14650: my %old_name_to_ip;
14651: my ($ip_info,$cached)=
14652: &Apache::lonnet::is_cached_new('iphost','iphost');
14653: if ($cached) {
14654: %old_name_to_ip = %{$ip_info->[1]};
14655: }
14656:
14657: my %name_to_host = &all_names($ignore_cache,$nocache);
14658: foreach my $name (keys(%name_to_host)) {
14659: my $ip;
14660: if (!exists($name_to_ip{$name})) {
14661: $ip = gethostbyname($name);
14662: if (!$ip || length($ip) ne 4) {
14663: if (defined($old_name_to_ip{$name})) {
14664: $ip = $old_name_to_ip{$name};
14665: &logthis("Can't find $name defaulting to old $ip");
14666: } else {
14667: &logthis("Name $name no IP found");
14668: next;
14669: }
14670: } else {
14671: $ip=inet_ntoa($ip);
14672: }
14673: $name_to_ip{$name} = $ip;
14674: } else {
14675: $ip = $name_to_ip{$name};
14676: }
14677: foreach my $id (@{ $name_to_host{$name} }) {
14678: $lonid_to_ip{$id} = $ip;
14679: }
14680: push(@{$iphost{$ip}},@{$name_to_host{$name}});
14681: }
14682: unless ($nocache) {
14683: &do_cache_new('iphost','iphost',
14684: [\%iphost,\%name_to_ip,\%lonid_to_ip],
14685: 48*60*60);
14686: }
14687:
14688: return %iphost;
14689: }
14690:
14691: #
14692: # Given a DNS returns the loncapa host name for that DNS
14693: #
14694: sub host_from_dns {
14695: my ($dns) = @_;
14696: my @hosts;
14697: my $ip;
14698:
14699: if (exists($name_to_ip{$dns})) {
14700: $ip = $name_to_ip{$dns};
14701: }
14702: if (!$ip) {
14703: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
14704: if (length($ip) == 4) {
14705: $ip = &IO::Socket::inet_ntoa($ip);
14706: }
14707: }
14708: if ($ip) {
14709: @hosts = get_hosts_from_ip($ip);
14710: return $hosts[0];
14711: }
14712: return undef;
14713: }
14714:
14715: sub get_internet_names {
14716: my ($lonid) = @_;
14717: return if ($lonid eq '');
14718: my ($idnref,$cached)=
14719: &Apache::lonnet::is_cached_new('internetnames',$lonid);
14720: if ($cached) {
14721: return $idnref;
14722: }
14723: my $ip = &get_host_ip($lonid);
14724: my @hosts = &get_hosts_from_ip($ip);
14725: my %iphost = &get_iphost();
14726: my (@idns,%seen);
14727: foreach my $id (@hosts) {
14728: my $dom = &host_domain($id);
14729: my $prim_id = &domain($dom,'primary');
14730: my $prim_ip = &get_host_ip($prim_id);
14731: next if ($seen{$prim_ip});
14732: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
14733: foreach my $id (@{$iphost{$prim_ip}}) {
14734: my $intdom = &internet_dom($id);
14735: unless (grep(/^\Q$intdom\E$/,@idns)) {
14736: push(@idns,$intdom);
14737: }
14738: }
14739: }
14740: $seen{$prim_ip} = 1;
14741: }
14742: return &do_cache_new('internetnames',$lonid,\@idns,12*60*60);
14743: }
14744:
14745: }
14746:
14747: sub all_loncaparevs {
14748: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11);
14749: }
14750:
14751: # ---------------------------------------------------------- Read loncaparev table
14752: {
14753: sub load_loncaparevs {
14754: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
14755: if (open(my $config,"<","$perlvar{'lonTabDir'}/loncaparevs.tab")) {
14756: while (my $configline=<$config>) {
14757: chomp($configline);
14758: my ($hostid,$loncaparev)=split(/:/,$configline);
14759: $loncaparevs{$hostid}=$loncaparev;
14760: }
14761: close($config);
14762: }
14763: }
14764: }
14765: }
14766:
14767: # ---------------------------------------------------------- Read serverhostID table
14768: {
14769: sub load_serverhomeIDs {
14770: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
14771: if (open(my $config,"<","$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
14772: while (my $configline=<$config>) {
14773: chomp($configline);
14774: my ($name,$id)=split(/:/,$configline);
14775: $serverhomeIDs{$name}=$id;
14776: }
14777: close($config);
14778: }
14779: }
14780: }
14781: }
14782:
14783:
14784: BEGIN {
14785:
14786: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
14787: unless ($readit) {
14788: {
14789: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
14790: %perlvar = (%perlvar,%{$configvars});
14791: }
14792:
14793:
14794: # ------------------------------------------------------ Read spare server file
14795: {
14796: open(my $config,"<","$perlvar{'lonTabDir'}/spare.tab");
14797:
14798: while (my $configline=<$config>) {
14799: chomp($configline);
14800: if ($configline) {
14801: my ($host,$type) = split(':',$configline,2);
14802: if (!defined($type) || $type eq '') { $type = 'default' };
14803: push(@{ $spareid{$type} }, $host);
14804: }
14805: }
14806: close($config);
14807: }
14808: # ------------------------------------------------------------ Read permissions
14809: {
14810: open(my $config,"<","$perlvar{'lonTabDir'}/roles.tab");
14811:
14812: while (my $configline=<$config>) {
14813: chomp($configline);
14814: if ($configline) {
14815: my ($role,$perm)=split(/ /,$configline);
14816: if ($perm ne '') { $pr{$role}=$perm; }
14817: }
14818: }
14819: close($config);
14820: }
14821:
14822: # -------------------------------------------- Read plain texts for permissions
14823: {
14824: open(my $config,"<","$perlvar{'lonTabDir'}/rolesplain.tab");
14825:
14826: while (my $configline=<$config>) {
14827: chomp($configline);
14828: if ($configline) {
14829: my ($short,@plain)=split(/:/,$configline);
14830: %{$prp{$short}} = ();
14831: if (@plain > 0) {
14832: $prp{$short}{'std'} = $plain[0];
14833: for (my $i=1; $i<@plain; $i++) {
14834: $prp{$short}{'alt'.$i} = $plain[$i];
14835: }
14836: }
14837: }
14838: }
14839: close($config);
14840: }
14841:
14842: # ---------------------------------------------------------- Read package table
14843: {
14844: open(my $config,"<","$perlvar{'lonTabDir'}/packages.tab");
14845:
14846: while (my $configline=<$config>) {
14847: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
14848: chomp($configline);
14849: my ($short,$plain)=split(/:/,$configline);
14850: my ($pack,$name)=split(/\&/,$short);
14851: if ($plain ne '') {
14852: $packagetab{$pack.'&'.$name.'&name'}=$name;
14853: $packagetab{$short}=$plain;
14854: }
14855: }
14856: close($config);
14857: }
14858:
14859: # ---------------------------------------------------------- Read loncaparev table
14860:
14861: &load_loncaparevs();
14862:
14863: # ---------------------------------------------------------- Read serverhostID table
14864:
14865: &load_serverhomeIDs();
14866:
14867: # ---------------------------------------------------------- Read releaseslist XML
14868: {
14869: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
14870: if (-e $file) {
14871: my $parser = HTML::LCParser->new($file);
14872: while (my $token = $parser->get_token()) {
14873: if ($token->[0] eq 'S') {
14874: my $item = $token->[1];
14875: my $name = $token->[2]{'name'};
14876: my $value = $token->[2]{'value'};
14877: my $valuematch = $token->[2]{'valuematch'};
14878: my $namematch = $token->[2]{'namematch'};
14879: if ($item eq 'parameter') {
14880: if (($namematch ne '') || (($name ne '') && ($value ne '' || $valuematch ne ''))) {
14881: my $release = $parser->get_text();
14882: $release =~ s/(^\s*|\s*$ )//gx;
14883: $needsrelease{$item.':'.$name.':'.$value.':'.$valuematch.':'.$namematch} = $release;
14884: }
14885: } elsif ($item ne '' && $name ne '') {
14886: my $release = $parser->get_text();
14887: $release =~ s/(^\s*|\s*$ )//gx;
14888: $needsrelease{$item.':'.$name.':'.$value} = $release;
14889: }
14890: }
14891: }
14892: }
14893: }
14894:
14895: # ---------------------------------------------------------- Read managers table
14896: {
14897: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
14898: if (open(my $config,"<","$perlvar{'lonTabDir'}/managers.tab")) {
14899: while (my $configline=<$config>) {
14900: chomp($configline);
14901: next if ($configline =~ /^\#/);
14902: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
14903: $managerstab{$configline} = 1;
14904: }
14905: }
14906: close($config);
14907: }
14908: }
14909: }
14910:
14911: # ------------- set up temporary directory
14912: {
14913: $tmpdir = LONCAPA::tempdir();
14914:
14915: }
14916:
14917: # ------------- set default texengine (domain default overrides this)
14918: {
14919: $deftex = LONCAPA::texengine();
14920: }
14921:
14922: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
14923: 'compress_threshold'=> 20_000,
14924: });
14925:
14926: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
14927: $dumpcount=0;
14928: $locknum=0;
14929:
14930: &logtouch();
14931: &logthis('<font color="yellow">INFO: Read configuration</font>');
14932: $readit=1;
14933: {
14934: use integer;
14935: my $test=(2**32)+1;
14936: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
14937: &logthis(" Detected 64bit platform ($_64bit)");
14938: }
14939: }
14940: }
14941:
14942: 1;
14943: __END__
14944:
14945: =pod
14946:
14947: =head1 NAME
14948:
14949: Apache::lonnet - Subroutines to ask questions about things in the network.
14950:
14951: =head1 SYNOPSIS
14952:
14953: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
14954:
14955: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
14956:
14957: Common parameters:
14958:
14959: =over 4
14960:
14961: =item *
14962:
14963: $uname : an internal username (if $cname expecting a course Id specifically)
14964:
14965: =item *
14966:
14967: $udom : a domain (if $cdom expecting a course's domain specifically)
14968:
14969: =item *
14970:
14971: $symb : a resource instance identifier
14972:
14973: =item *
14974:
14975: $namespace : the name of a .db file that contains the data needed or
14976: being set.
14977:
14978: =back
14979:
14980: =head1 OVERVIEW
14981:
14982: lonnet provides subroutines which interact with the
14983: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
14984: about classes, users, and resources.
14985:
14986: For many of these objects you can also use this to store data about
14987: them or modify them in various ways.
14988:
14989: =head2 Symbs
14990:
14991: To identify a specific instance of a resource, LON-CAPA uses symbols
14992: or "symbs"X<symb>. These identifiers are built from the URL of the
14993: map, the resource number of the resource in the map, and the URL of
14994: the resource itself. The latter is somewhat redundant, but might help
14995: if maps change.
14996:
14997: An example is
14998:
14999: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
15000:
15001: The respective map entry is
15002:
15003: <resource id="19" src="/res/msu/korte/tests/part12.problem"
15004: title="Problem 2">
15005: </resource>
15006:
15007: Symbs are used by the random number generator, as well as to store and
15008: restore data specific to a certain instance of for example a problem.
15009:
15010: =head2 Storing And Retrieving Data
15011:
15012: X<store()>X<cstore()>X<restore()>Three of the most important functions
15013: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
15014: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
15015: is is the non-critical message twin of cstore. These functions are for
15016: handlers to store a perl hash to a user's permanent data space in an
15017: easy manner, and to retrieve it again on another call. It is expected
15018: that a handler would use this once at the beginning to retrieve data,
15019: and then again once at the end to send only the new data back.
15020:
15021: The data is stored in the user's data directory on the user's
15022: homeserver under the ID of the course.
15023:
15024: The hash that is returned by restore will have all of the previous
15025: value for all of the elements of the hash.
15026:
15027: Example:
15028:
15029: #creating a hash
15030: my %hash;
15031: $hash{'foo'}='bar';
15032:
15033: #storing it
15034: &Apache::lonnet::cstore(\%hash);
15035:
15036: #changing a value
15037: $hash{'foo'}='notbar';
15038:
15039: #adding a new value
15040: $hash{'bar'}='foo';
15041: &Apache::lonnet::cstore(\%hash);
15042:
15043: #retrieving the hash
15044: my %history=&Apache::lonnet::restore();
15045:
15046: #print the hash
15047: foreach my $key (sort(keys(%history))) {
15048: print("\%history{$key} = $history{$key}");
15049: }
15050:
15051: Will print out:
15052:
15053: %history{1:foo} = bar
15054: %history{1:keys} = foo:timestamp
15055: %history{1:timestamp} = 990455579
15056: %history{2:bar} = foo
15057: %history{2:foo} = notbar
15058: %history{2:keys} = foo:bar:timestamp
15059: %history{2:timestamp} = 990455580
15060: %history{bar} = foo
15061: %history{foo} = notbar
15062: %history{timestamp} = 990455580
15063: %history{version} = 2
15064:
15065: Note that the special hash entries C<keys>, C<version> and
15066: C<timestamp> were added to the hash. C<version> will be equal to the
15067: total number of versions of the data that have been stored. The
15068: C<timestamp> attribute will be the UNIX time the hash was
15069: stored. C<keys> is available in every historical section to list which
15070: keys were added or changed at a specific historical revision of a
15071: hash.
15072:
15073: B<Warning>: do not store the hash that restore returns directly. This
15074: will cause a mess since it will restore the historical keys as if the
15075: were new keys. I.E. 1:foo will become 1:1:foo etc.
15076:
15077: Calling convention:
15078:
15079: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
15080: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$laststore);
15081:
15082: For more detailed information, see lonnet specific documentation.
15083:
15084: =head1 RETURN MESSAGES
15085:
15086: =over 4
15087:
15088: =item * B<con_lost>: unable to contact remote host
15089:
15090: =item * B<con_delayed>: unable to contact remote host, message will be delivered
15091: when the connection is brought back up
15092:
15093: =item * B<con_failed>: unable to contact remote host and unable to save message
15094: for later delivery
15095:
15096: =item * B<error:>: an error a occurred, a description of the error follows the :
15097:
15098: =item * B<no_such_host>: unable to fund a host associated with the user/domain
15099: that was requested
15100:
15101: =back
15102:
15103: =head1 PUBLIC SUBROUTINES
15104:
15105: =head2 Session Environment Functions
15106:
15107: =over 4
15108:
15109: =item *
15110: X<appenv()>
15111: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
15112: the user envirnoment file, and will be restored for each access this
15113: user makes during this session, also modifies the %env for the current
15114: process. Optional rolesarrayref - if defined contains a reference to an array
15115: of roles which are exempt from the restriction on modifying user.role entries
15116: in the user's environment.db and in %env.
15117:
15118: =item *
15119: X<delenv()>
15120: B<delenv($delthis,$regexp)>: removes all items from the session
15121: environment file that begin with $delthis. If the
15122: optional second arg - $regexp - is true, $delthis is treated as a
15123: regular expression, otherwise \Q$delthis\E is used.
15124: The values are also deleted from the current processes %env.
15125:
15126: =item * get_env_multiple($name)
15127:
15128: gets $name from the %env hash, it seemlessly handles the cases where multiple
15129: values may be defined and end up as an array ref.
15130:
15131: returns an array of values
15132:
15133: =back
15134:
15135: =head2 User Information
15136:
15137: =over 4
15138:
15139: =item *
15140: X<queryauthenticate()>
15141: B<queryauthenticate($uname,$udom)>: try to determine user's current
15142: authentication scheme
15143:
15144: =item *
15145: X<authenticate()>
15146: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
15147: authenticate user from domain's lib servers (first use the current
15148: one). C<$upass> should be the users password.
15149: $checkdefauth is optional (value is 1 if a check should be made to
15150: authenticate user using default authentication method, and allow
15151: account creation if username does not have account in the domain).
15152: $clientcancheckhost is optional (value is 1 if checking whether the
15153: server can host will occur on the client side in lonauth.pm).
15154:
15155: =item *
15156: X<homeserver()>
15157: B<homeserver($uname,$udom)>: find the server which has
15158: the user's directory and files (there must be only one), this caches
15159: the answer, and also caches if there is a borken connection.
15160:
15161: =item *
15162: X<idget()>
15163: B<idget($udom,$idsref,$namespace)>: find the usernames behind either
15164: a list of student/employee IDs or clicker IDs
15165: (student/employee IDs are a unique resource in a domain, there must be
15166: only 1 ID per username, and only 1 username per ID in a specific domain).
15167: clickerIDs are not necessarily unique, as students might share clickers.
15168: (returns hash: id=>name,id=>name)
15169:
15170: =item *
15171: X<idrget()>
15172: B<idrget($udom,@unames)>: find the IDs behind a list of
15173: usernames (returns hash: name=>id,name=>id)
15174:
15175: =item *
15176: X<idput()>
15177: B<idput($udom,$idsref,$uhome,$namespace)>: store away a list of
15178: names and associated student/employee IDs or clicker IDs.
15179:
15180: =item *
15181: X<iddel()>
15182: B<iddel($udom,$idshashref,$uhome,$namespace)>: delete unwanted
15183: student/employee ID or clicker ID username look-ups from domain.
15184: The homeserver ($uhome) and namespace ($namespace) are optional.
15185: If no $uhome is provided, it will be determined usig &homeserver()
15186: for each user. If no $namespace is provided, the default is ids.
15187:
15188: =item *
15189: X<updateclickers()>
15190: B<updateclickers($udom,$action,$idshashref,$uhome,$critical)>: update
15191: clicker ID-to-username look-ups in clickers.db on library server.
15192: Permitted actions are add or del (i.e., add or delete). The
15193: clickers.db contains clickerID as keys (escaped), and each corresponding
15194: value is an escaped comma-separated list of usernames (for whom the
15195: library server is the homeserver), who registered that particular ID.
15196: If $critical is true, the update will be sent via &critical, otherwise
15197: &reply() will be used.
15198:
15199: =item *
15200: X<rolesinit()>
15201: B<rolesinit($udom,$username)>: get user privileges.
15202: returns user role, first access and timer interval hashes
15203:
15204: =item *
15205: X<privileged()>
15206: B<privileged($username,$domain)>: returns a true if user has a
15207: privileged and active role (i.e. su or dc), false otherwise.
15208:
15209: =item *
15210: X<getsection()>
15211: B<getsection($udom,$uname,$cname)>: finds the section of student in the
15212: course $cname, return section name/number or '' for "not in course"
15213: and '-1' for "no section"
15214:
15215: =item *
15216: X<userenvironment()>
15217: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
15218: passed in @what from the requested user's environment, returns a hash
15219:
15220: =item *
15221: X<userlog_query()>
15222: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
15223: activity.log file. %filters defines filters applied when parsing the
15224: log file. These can be start or end timestamps, or the type of action
15225: - log to look for Login or Logout events, check for Checkin or
15226: Checkout, role for role selection. The response is in the form
15227: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
15228: escaped strings of the action recorded in the activity.log file.
15229:
15230: =back
15231:
15232: =head2 User Roles
15233:
15234: =over 4
15235:
15236: =item *
15237:
15238: allowed($priv,$uri,$symb,$role,$clientip,$noblockcheck) : check for a user privilege;
15239: returns codes for allowed actions.
15240:
15241: The first argument is required, all others are optional.
15242:
15243: $priv is the privilege being checked.
15244: $uri contains additional information about what is being checked for access (e.g.,
15245: URL, course ID etc.).
15246: $symb is the unique resource instance identifier in a course; if needed,
15247: but not provided, it will be retrieved via a call to &symbread().
15248: $role is the role for which a priv is being checked (only used if priv is evb).
15249: $clientip is the user's IP address (only used when checking for access to portfolio
15250: files).
15251: $noblockcheck, if true, skips calls to &has_comm_blocking() for the bre priv. This
15252: prevents recursive calls to &allowed.
15253:
15254: F: full access
15255: U,I,K: authentication modes (cxx only)
15256: '': forbidden
15257: 1: user needs to choose course
15258: 2: browse allowed
15259: A: passphrase authentication needed
15260: B: access temporarily blocked because of a blocking event in a course.
15261: D: access blocked because access is required via session initiated via deep-link
15262:
15263: =item *
15264:
15265: constructaccess($url,$setpriv) : check for access to construction space URL
15266:
15267: See if the owner domain and name in the URL match those in the
15268: expected environment. If so, return three element list
15269: ($ownername,$ownerdomain,$ownerhome).
15270:
15271: Otherwise return the null string.
15272:
15273: If second argument 'setpriv' is true, it assigns the privileges,
15274: and returns the same three element list, unless the owner has
15275: blocked "ad hoc" Domain Coordinator access to the Author Space,
15276: in which case the null string is returned.
15277:
15278: =item *
15279:
15280: definerole($rolename,$sysrole,$domrole,$courole,$uname,$udom) : define role;
15281: define a custom role rolename set privileges in format of lonTabs/roles.tab
15282: for system, domain, and course level. $uname and $udom are optional (current
15283: user's username and domain will be used when either of $uname or $udom are absent.
15284:
15285: =item *
15286:
15287: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
15288: (rolesplain.tab); plain text explanation of a user role term.
15289: $type is Course (default) or Community.
15290: If $forcedefault evaluates to true, text returned will be default
15291: text for $type. Otherwise, if this is a course, the text returned
15292: will be a custom name for the role (if defined in the course's
15293: environment). If no custom name is defined the default is returned.
15294:
15295: =item *
15296:
15297: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
15298: All arguments are optional. Returns a hash of a roles, either for
15299: co-author/assistant author roles for a user's Construction Space
15300: (default), or if $context is 'userroles', roles for the user himself,
15301: In the hash, keys are set to colon-separated $uname,$udom,$role, and
15302: (optionally) if $withsec is true, a fourth colon-separated item - $section.
15303: For each key, value is set to colon-separated start and end times for
15304: the role. If no username and domain are specified, will default to
15305: current user/domain. Types, roles, and roledoms are references to arrays
15306: of role statuses (active, future or previous), roles
15307: (e.g., cc,in, st etc.) and domains of the roles which can be used
15308: to restrict the list of roles reported. If no array ref is
15309: provided for types, will default to return only active roles.
15310:
15311: =item *
15312:
15313: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
15314: user: $uname:$udom has a role in the course: $cdom_$cnum.
15315:
15316: Additional optional arguments are: $type (if role checking is to be restricted
15317: to certain user status types -- previous (expired roles), active (currently
15318: available roles) or future (roles available in the future), and
15319: $hideprivileged -- if true will not report course roles for users who
15320: have active Domain Coordinator role in course's domain or in additional
15321: domains (specified in 'Domains to check for privileged users' in course
15322: environment -- set via: Course Settings -> Classlists and staff listing).
15323:
15324: =item *
15325:
15326: privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
15327: $username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
15328: $possdomains and $possroles are optional array refs -- to domains to check and
15329: roles to check. If $possdomains is not specified, a dump will be done of the
15330: users' roles.db to check for a dc or su role in any domain. This can be
15331: time consuming if &privileged is called repeatedly (e.g., when displaying a
15332: classlist), so in such cases, supplying a $possdomains array is preferred, as
15333: this then allows &privileged_by_domain() to be used, which caches the identity
15334: of privileged users, eliminating the need for repeated calls to &dump().
15335:
15336: =item *
15337:
15338: privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
15339: where the outer hash keys are domains specified in the $possdomains array ref,
15340: next inner hash keys are privileged roles specified in the $roles array ref,
15341: and the innermost hash contains key = value pairs for username:domain = end:start
15342: for active or future "privileged" users with that role in that domain. To avoid
15343: repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
15344: innerhash are cached using priv_$role and $dom as the identifiers.
15345:
15346: =back
15347:
15348: =head2 User Modification
15349:
15350: =over 4
15351:
15352: =item *
15353:
15354: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
15355: user for the level given by URL. Optional start and end dates (leave empty
15356: string or zero for "no date")
15357:
15358: =item *
15359:
15360: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
15361: change a users, password, possible return values are: ok,
15362: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
15363: refused
15364:
15365: =item *
15366:
15367: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
15368:
15369: =item *
15370:
15371: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
15372: $forceid,$desiredhome,$email,$inststatus,$candelete) :
15373:
15374: will update user information (firstname,middlename,lastname,generation,
15375: permanentemail), and if forceid is true, student/employee ID also.
15376: A user's institutional affiliation(s) can also be updated.
15377: User information fields will not be overwritten with empty entries
15378: unless the field is included in the $candelete array reference.
15379: This array is included when a single user is modified via "Manage Users",
15380: or when Autoupdate.pl is run by cron in a domain.
15381:
15382: =item *
15383:
15384: modifystudent
15385:
15386: modify a student's enrollment and identification information.
15387: The course id is resolved based on the current user's environment.
15388: This means the invoking user must be a course coordinator or otherwise
15389: associated with a course.
15390:
15391: This call is essentially a wrapper for lonnet::modifyuser and
15392: lonnet::modify_student_enrollment
15393:
15394: Inputs:
15395:
15396: =over 4
15397:
15398: =item B<$udom> Student's loncapa domain
15399:
15400: =item B<$uname> Student's loncapa login name
15401:
15402: =item B<$uid> Student/Employee ID
15403:
15404: =item B<$umode> Student's authentication mode
15405:
15406: =item B<$upass> Student's password
15407:
15408: =item B<$first> Student's first name
15409:
15410: =item B<$middle> Student's middle name
15411:
15412: =item B<$last> Student's last name
15413:
15414: =item B<$gene> Student's generation
15415:
15416: =item B<$usec> Student's section in course
15417:
15418: =item B<$end> Unix time of the roles expiration
15419:
15420: =item B<$start> Unix time of the roles start date
15421:
15422: =item B<$forceid> If defined, allow $uid to be changed
15423:
15424: =item B<$desiredhome> server to use as home server for student
15425:
15426: =item B<$email> Student's permanent e-mail address
15427:
15428: =item B<$type> Type of enrollment (auto or manual)
15429:
15430: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
15431:
15432: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
15433:
15434: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
15435:
15436: =item B<$context> role change context (shown in User Management Logs display in a course)
15437:
15438: =item B<$inststatus> institutional status of user - : separated string of escaped status types
15439:
15440: =item B<$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.
15441:
15442: =back
15443:
15444: =item *
15445:
15446: modify_student_enrollment
15447:
15448: Change a student's enrollment status in a class. The environment variable
15449: 'role.request.course' must be defined for this function to proceed.
15450:
15451: Inputs:
15452:
15453: =over 4
15454:
15455: =item $udom, student's domain
15456:
15457: =item $uname, student's name
15458:
15459: =item $uid, student's user id
15460:
15461: =item $first, student's first name
15462:
15463: =item $middle
15464:
15465: =item $last
15466:
15467: =item $gene
15468:
15469: =item $usec
15470:
15471: =item $end
15472:
15473: =item $start
15474:
15475: =item $type
15476:
15477: =item $locktype
15478:
15479: =item $cid
15480:
15481: =item $selfenroll
15482:
15483: =item $context
15484:
15485: =item $credits, number of credits student will earn from this class
15486:
15487: =item $instsec, institutional course section code for student
15488:
15489: =back
15490:
15491:
15492: =item *
15493:
15494: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
15495: custom role; give a custom role to a user for the level given by URL. Specify
15496: name and domain of role author, and role name
15497:
15498: =item *
15499:
15500: revokerole($udom,$uname,$url,$role) : revoke a role for url
15501:
15502: =item *
15503:
15504: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
15505:
15506: =back
15507:
15508: =head2 Course Infomation
15509:
15510: =over 4
15511:
15512: =item *
15513:
15514: coursedescription($courseid,$options) : returns a hash of information about the
15515: specified course id, including all environment settings for the
15516: course, the description of the course will be in the hash under the
15517: key 'description'
15518:
15519: $options is an optional parameter that if supplied is a hash reference that controls
15520: what how this function works. It has the following key/values:
15521:
15522: =over 4
15523:
15524: =item freshen_cache
15525:
15526: If defined, and the environment cache for the course is valid, it is
15527: returned in the returned hash.
15528:
15529: =item one_time
15530:
15531: If defined, the last cache time is set to _now_
15532:
15533: =item user
15534:
15535: If defined, the supplied username is used instead of the current user.
15536:
15537:
15538: =back
15539:
15540: =item *
15541:
15542: resdata($name,$domain,$type,@which) : request for current parameter
15543: setting for a specific $type, where $type is either 'course' or 'user',
15544: @what should be a list of parameters to ask about. This routine caches
15545: answers for 10 minutes.
15546:
15547: =item *
15548:
15549: get_courseresdata($courseid, $domain) : dump the entire course resource
15550: data base, returning a hash that is keyed by the resource name and has
15551: values that are the resource value. I believe that the timestamps and
15552: versions are also returned.
15553:
15554: get_numsuppfiles($cnum,$cdom) : retrieve number of files in a course's
15555: supplemental content area. This routine caches the number of files for
15556: 10 minutes.
15557:
15558: =back
15559:
15560: =head2 Course Modification
15561:
15562: =over 4
15563:
15564: =item *
15565:
15566: writecoursepref($courseid,%prefs) : write preferences (environment
15567: database) for a course
15568:
15569: =item *
15570:
15571: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
15572:
15573: =item *
15574:
15575: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
15576:
15577: =item *
15578:
15579: is_course($courseid), is_course($cdom, $cnum)
15580:
15581: Accepts either a combined $courseid (in the form of domain_courseid) or the
15582: two component version $cdom, $cnum. It checks if the specified course exists.
15583:
15584: Returns:
15585: undef if the course doesn't exist, otherwise
15586: in scalar context the combined courseid.
15587: in list context the two components of the course identifier, domain and
15588: courseid.
15589:
15590: =back
15591:
15592: =head2 Bubblesheet Configuration
15593:
15594: =over 4
15595:
15596: =item *
15597:
15598: get_scantron_config($which)
15599:
15600: $which - the name of the configuration to parse from the file.
15601:
15602: Parses and returns the bubblesheet configuration line selected as a
15603: hash of configuration file fields.
15604:
15605:
15606: Returns:
15607: If the named configuration is not in the file, an empty
15608: hash is returned.
15609:
15610: a hash with the fields
15611: name - internal name for the this configuration setup
15612: description - text to display to operator that describes this config
15613: CODElocation - if 0 or the string 'none'
15614: - no CODE exists for this config
15615: if -1 || the string 'letter'
15616: - a CODE exists for this config and is
15617: a string of letters
15618: Unsupported value (but planned for future support)
15619: if a positive integer
15620: - The CODE exists as the first n items from
15621: the question section of the form
15622: if the string 'number'
15623: - The CODE exists for this config and is
15624: a string of numbers
15625: CODEstart - (only matter if a CODE exists) column in the line where
15626: the CODE starts
15627: CODElength - length of the CODE
15628: IDstart - column where the student/employee ID starts
15629: IDlength - length of the student/employee ID info
15630: Qstart - column where the information from the bubbled
15631: 'questions' start
15632: Qlength - number of columns comprising a single bubble line from
15633: the sheet. (usually either 1 or 10)
15634: Qon - either a single character representing the character used
15635: to signal a bubble was chosen in the positional setup, or
15636: the string 'letter' if the letter of the chosen bubble is
15637: in the final, or 'number' if a number representing the
15638: chosen bubble is in the file (1->A 0->J)
15639: Qoff - the character used to represent that a bubble was
15640: left blank
15641: PaperID - if the scanning process generates a unique number for each
15642: sheet scanned the column that this ID number starts in
15643: PaperIDlength - number of columns that comprise the unique ID number
15644: for the sheet of paper
15645: FirstName - column that the first name starts in
15646: FirstNameLength - number of columns that the first name spans
15647: LastName - column that the last name starts in
15648: LastNameLength - number of columns that the last name spans
15649: BubblesPerRow - number of bubbles available in each row used to
15650: bubble an answer. (If not specified, 10 assumed).
15651:
15652:
15653: =item *
15654:
15655: get_scantronformat_file($cdom)
15656:
15657: $cdom - the course's domain (optional); if not supplied, uses
15658: domain for current $env{'request.course.id'}.
15659:
15660: Returns an array containing lines from the scantron format file for
15661: the domain of the course.
15662:
15663: If a url for a custom.tab file is listed in domain's configuration.db,
15664: lines are from this file.
15665:
15666: Otherwise, if a default.tab has been published in RES space by the
15667: domainconfig user, lines are from this file.
15668:
15669: Otherwise, fall back to getting lines from the legacy file on the
15670: local server: /home/httpd/lonTabs/default_scantronformat.tab
15671:
15672: =back
15673:
15674: =head2 Resource Subroutines
15675:
15676: =over 4
15677:
15678: =item *
15679:
15680: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
15681:
15682: =item *
15683:
15684: repcopy($filename) : subscribes to the requested file, and attempts to
15685: replicate from the owning library server, Might return
15686: 'unavailable', 'not_found', 'forbidden', 'ok', or
15687: 'bad_request', also attempts to grab the metadata for the
15688: resource. Expects the local filesystem pathname
15689: (/home/httpd/html/res/....)
15690:
15691: =back
15692:
15693: =head2 Resource Information
15694:
15695: =over 4
15696:
15697: =item *
15698:
15699: EXT($varname,$symb,$udom,$uname,$usection,$recurse,$cid) : evaluates
15700: and returns the value of a variety of different possible values,
15701: $varname should be a request string, and the other parameters can be
15702: used to specify who and what one is asking about. Ordinarily, $cid
15703: does not need to be specified, as it is retrived from
15704: $env{'request.course.id'}, but &Apache::lonnet::EXT() is called
15705: within lonuserstate::loadmap() when initializing a course, before
15706: $env{'request.course.id'} has been set, so it needs to be provided
15707: in that one case.
15708:
15709: Possible values for $varname are environment.lastname (or other item
15710: from the envirnment hash), user.name (or someother aspect about the
15711: user), resource.0.maxtries (or some other part and parameter of a
15712: resource)
15713:
15714: =item *
15715:
15716: directcondval($number) : get current value of a condition; reads from a state
15717: string
15718:
15719: =item *
15720:
15721: condval($condidx) : value of condition index based on state
15722:
15723: =item *
15724:
15725: metadata($uri,$what,$toolsymb,$liburi,$prefix,$depthcount) : request a
15726: resource's metadata, $what should be either a specific key, or either
15727: 'keys' (to get a list of possible keys) or 'packages' to get a list of
15728: packages that this resource currently uses, the last 3 arguments are
15729: only used internally for recursive metadata.
15730:
15731: the toolsymb is only used where the uri is for an external tool (for which
15732: the uri as well as the symb are guaranteed to be unique).
15733:
15734: this function automatically caches all requests except any made recursively
15735: to retrieve a list of metadata keys for an imported library file ($liburi is
15736: defined).
15737:
15738: =item *
15739:
15740: metadata_query($query,$custom,$customshow) : make a metadata query against the
15741: network of library servers; returns file handle of where SQL and regex results
15742: will be stored for query
15743:
15744: =item *
15745:
15746: symbread($filename,$donotrecurse,$ignorecachednull,$checkforblock,$possibles) :
15747: return symbolic list entry (all arguments optional).
15748:
15749: Args: filename is the filename (including path) for the file for which a symb
15750: is required; donotrecurse, if true will prevent calls to allowed() being made
15751: to check access status if more than one resource was found in the bighash
15752: (see rev. 1.249) to avoid an infinite loop if an ambiguous resource is part of
15753: a randompick); ignorecachednull, if true will prevent a symb of '' being
15754: returned if $env{$cache_str} is defined as ''; checkforblock if true will
15755: cause possible symbs to be checked to determine if they are subject to content
15756: blocking, if so they will not be included as possible symbs; possibles is a
15757: ref to a hash, which, as a side effect, will be populated with all possible
15758: symbs (content blocking not tested).
15759:
15760: returns the data handle
15761:
15762: =item *
15763:
15764: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
15765: and is a possible symb for the URL in $thisfn, and if is an encrypted
15766: resource that the user accessed using /enc/ returns a 1 on success, 0
15767: on failure, user must be in a course, as it assumes the existence of
15768: the course initial hash, and uses $env('request.course.id'}. The third
15769: arg is an optional reference to a scalar. If this arg is passed in the
15770: call to symbverify, it will be set to 1 if the symb has been set to be
15771: encrypted; otherwise it will be null.
15772:
15773: =item *
15774:
15775: symbclean($symb) : removes versions numbers from a symb, returns the
15776: cleaned symb
15777:
15778: =item *
15779:
15780: is_on_map($uri) : checks if the $uri is somewhere on the current
15781: course map, user must be in a course for it to work.
15782:
15783: =item *
15784:
15785: numval($salt) : return random seed value (addend for rndseed)
15786:
15787: =item *
15788:
15789: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
15790: a random seed, all arguments are optional, if they aren't sent it uses the
15791: environment to derive them. Note: if symb isn't sent and it can't get one
15792: from &symbread it will use the current time as its return value
15793:
15794: =item *
15795:
15796: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
15797: unfakeable, receipt
15798:
15799: =item *
15800:
15801: receipt() : API to ireceipt working off of env values; given out to users
15802:
15803: =item *
15804:
15805: countacc($url) : count the number of accesses to a given URL
15806:
15807: =item *
15808:
15809: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
15810:
15811: =item *
15812:
15813: checkin($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 $tcrsid)
15814:
15815: =item *
15816:
15817: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
15818:
15819: =item *
15820:
15821: devalidate($symb) : devalidate temporary spreadsheet calculations,
15822: forcing spreadsheet to reevaluate the resource scores next time.
15823:
15824: =item *
15825:
15826: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
15827: when viewing in course context.
15828:
15829: input: six args -- filename (decluttered), course number, course domain,
15830: url, symb (if registered) and group (if this is a
15831: group item -- e.g., bulletin board, group page etc.).
15832:
15833: output: array of five scalars --
15834: $cfile -- url for file editing if editable on current server
15835: $home -- homeserver of resource (i.e., for author if published,
15836: or course if uploaded.).
15837: $switchserver -- 1 if server switch will be needed.
15838: $forceedit -- 1 if icon/link should be to go to edit mode
15839: $forceview -- 1 if icon/link should be to go to view mode
15840:
15841: =item *
15842:
15843: is_course_upload($file,$cnum,$cdom)
15844:
15845: Used in course context to determine if current file was uploaded to
15846: the course (i.e., would be found in /userfiles/docs on the course's
15847: homeserver.
15848:
15849: input: 3 args -- filename (decluttered), course number and course domain.
15850: output: boolean -- 1 if file was uploaded.
15851:
15852: =back
15853:
15854: =head2 Storing/Retreiving Data
15855:
15856: =over 4
15857:
15858: =item *
15859:
15860: store($storehash,$symb,$namespace,$udom,$uname,$laststore) : stores hash
15861: permanently for this url; hashref needs to be given and should be a \%hashname;
15862: the remaining args aren't required and if they aren't passed or are '' they will
15863: be derived from the env (with the exception of $laststore, which is an
15864: optional arg used when a user's submission is stored in grading).
15865: $laststore is $version=$timestamp, where $version is the most recent version
15866: number retrieved for the corresponding $symb in the $namespace db file, and
15867: $timestamp is the timestamp for that transaction (UNIX time).
15868: $laststore is currently only passed when cstore() is called by
15869: structuretags::finalize_storage().
15870:
15871: =item *
15872:
15873: cstore($storehash,$symb,$namespace,$udom,$uname,$laststore) : same as store
15874: but uses critical subroutine
15875:
15876: =item *
15877:
15878: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
15879: all args are optional
15880:
15881: =item *
15882:
15883: dumpstore($namespace,$udom,$uname,$regexp,$range) :
15884: dumps the complete (or key matching regexp) namespace into a hash
15885: ($udom, $uname, $regexp, $range are optional) for a namespace that is
15886: normally &store()ed into
15887:
15888: $range should be either an integer '100' (give me the first 100
15889: matching records)
15890: or be two integers sperated by a - with no spaces
15891: '30-50' (give me the 30th through the 50th matching
15892: records)
15893:
15894:
15895: =item *
15896:
15897: putstore($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog) :
15898: replaces a &store() version of data with a replacement set of data
15899: for a particular resource in a namespace passed in the $storehash hash
15900: reference. If $tolog is true, the transaction is logged in the courselog
15901: with an action=PUTSTORE.
15902:
15903: =item *
15904:
15905: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
15906: works very similar to store/cstore, but all data is stored in a
15907: temporary location and can be reset using tmpreset, $storehash should
15908: be a hash reference, returns nothing on success
15909:
15910: =item *
15911:
15912: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
15913: similar to restore, but all data is stored in a temporary location and
15914: can be reset using tmpreset. Returns a hash of values on success,
15915: error string otherwise.
15916:
15917: =item *
15918:
15919: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
15920: deltes all keys for $symb form the temporary storage hash.
15921:
15922: =item *
15923:
15924: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
15925: reference filled in from namesp ($udom and $uname are optional)
15926:
15927: =item *
15928:
15929: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
15930: namesp ($udom and $uname are optional)
15931:
15932: =item *
15933:
15934: dump($namespace,$udom,$uname,$regexp,$range) :
15935: dumps the complete (or key matching regexp) namespace into a hash
15936: ($udom, $uname, $regexp, $range are optional)
15937:
15938: $range should be either an integer '100' (give me the first 100
15939: matching records)
15940: or be two integers sperated by a - with no spaces
15941: '30-50' (give me the 30th through the 50th matching
15942: records)
15943: =item *
15944:
15945: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
15946: $store can be a scalar, an array reference, or if the amount to be
15947: incremented is > 1, a hash reference.
15948:
15949: ($udom and $uname are optional)
15950:
15951: =item *
15952:
15953: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
15954: ($udom and $uname are optional)
15955:
15956: =item *
15957:
15958: cput($namespace,$storehash,$udom,$uname) : critical put
15959: ($udom and $uname are optional)
15960:
15961: =item *
15962:
15963: newput($namespace,$storehash,$udom,$uname) :
15964:
15965: Attempts to store the items in the $storehash, but only if they don't
15966: currently exist, if this succeeds you can be certain that you have
15967: successfully created a new key value pair in the $namespace db.
15968:
15969:
15970: Args:
15971: $namespace: name of database to store values to
15972: $storehash: hashref to store to the db
15973: $udom: (optional) domain of user containing the db
15974: $uname: (optional) name of user caontaining the db
15975:
15976: Returns:
15977: 'ok' -> succeeded in storing all keys of $storehash
15978: 'key_exists: <key>' -> failed to anything out of $storehash, as at
15979: least <key> already existed in the db (other
15980: requested keys may also already exist)
15981: 'error: <msg>' -> unable to tie the DB or other error occurred
15982: 'con_lost' -> unable to contact request server
15983: 'refused' -> action was not allowed by remote machine
15984:
15985:
15986: =item *
15987:
15988: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
15989: reference filled in from namesp (encrypts the return communication)
15990: ($udom and $uname are optional)
15991:
15992: =item *
15993:
15994: log($udom,$name,$home,$message) : write to permanent log for user; use
15995: critical subroutine
15996:
15997: =item *
15998:
15999: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
16000: array reference filled in from namespace found in domain level on either
16001: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
16002:
16003: =item *
16004:
16005: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
16006: domain level either on specified domain server ($uhome) or primary domain
16007: server ($udom and $uhome are optional)
16008:
16009: =item *
16010:
16011: get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults
16012: for: authentication, language, quotas, timezone, date locale, and portal URL in
16013: the target domain.
16014:
16015: May also include additional key => value pairs for the following groups:
16016:
16017: =over
16018:
16019: =item
16020: disk quotas (MB allocated by default to portfolios and authoring spaces).
16021:
16022: =over
16023:
16024: =item defaultquota, authorquota
16025:
16026: =back
16027:
16028: =item
16029: tools (availability of aboutme page, blog, webDAV access for authoring spaces,
16030: portfolio for users).
16031:
16032: =over
16033:
16034: =item
16035: aboutme, blog, webdav, portfolio
16036:
16037: =back
16038:
16039: =item
16040: requestcourses: ability to request courses, and how requests are processed.
16041:
16042: =over
16043:
16044: =item
16045: official, unofficial, community, textbook, placement
16046:
16047: =back
16048:
16049: =item
16050: inststatus: types of institutional affiliation, and order in which they are displayed.
16051:
16052: =over
16053:
16054: =item
16055: inststatustypes, inststatusorder, inststatusguest
16056:
16057: =back
16058:
16059: =item
16060: coursedefaults: can PDF forms can be created, default credits for courses, default quotas (MB)
16061: for course's uploaded content.
16062:
16063: =over
16064:
16065: =item
16066: canuse_pdfforms, officialcredits, unofficialcredits, textbookcredits, officialquota, unofficialquota,
16067: communityquota, textbookquota, placementquota
16068:
16069: =back
16070:
16071: =item
16072: usersessions: set options for hosting of your users in other domains, and hosting of users from other domains
16073: on your servers.
16074:
16075: =over
16076:
16077: =item
16078: remotesessions, hostedsessions
16079:
16080: =back
16081:
16082: =back
16083:
16084: In cases where a domain coordinator has never used the "Set Domain Configuration"
16085: utility to create a configuration.db file on a domain's primary library server
16086: only the following domain defaults: auth_def, auth_arg_def, lang_def
16087: -- corresponding values are authentication type (internal, krb4, krb5,
16088: or localauth), initial password or a kerberos realm, language (e.g., en-us) --
16089: will be available. Values are retrieved from cache (if current), unless the
16090: optional $ignore_cache arg is true, or from domain's configuration.db (if available),
16091: or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab.
16092:
16093: Typical usage:
16094:
16095: %domdefaults = &get_domain_defaults($target_domain);
16096:
16097: =back
16098:
16099: =head2 Network Status Functions
16100:
16101: =over 4
16102:
16103: =item *
16104:
16105: dirlist() : return directory list based on URI (first arg).
16106:
16107: Inputs: 1 required, 5 optional.
16108:
16109: =over
16110:
16111: =item
16112: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
16113:
16114: =item
16115: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
16116:
16117: =item
16118: $username - username of user/course to be listed. Extracted from $uri if absent.
16119:
16120: =item
16121: $getpropath - boolean: 1 if prepend path using &propath().
16122:
16123: =item
16124: $getuserdir - boolean: 1 if prepend path for "userfiles".
16125:
16126: =item
16127: $alternateRoot - path to prepend in place of path from $uri.
16128:
16129: =back
16130:
16131: Returns: Array of up to two items.
16132:
16133: =over
16134:
16135: a reference to an array of files/subdirectories
16136:
16137: =over
16138:
16139: Each element in the array of files/subdirectories is a & separated list of
16140: item name and the result of running stat on the item. If dirlist was requested
16141: for a file instead of a directory, the item name will be ''. For a directory
16142: listing, if the item is a metadata file, the element will end &N&M
16143: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
16144: default copyright set (1).
16145:
16146: =back
16147:
16148: a scalar containing error condition (if encountered).
16149:
16150: =over
16151:
16152: =item
16153: no_host (no homeserver identified for $username:$domain).
16154:
16155: =item
16156: no_such_host (server contacted for listing not identified as valid host).
16157:
16158: =item
16159: con_lost (connection to remote server failed).
16160:
16161: =item
16162: refused (invalid $username:$domain received on lond side).
16163:
16164: =item
16165: no_such_dir (directory at specified path on lond side does not exist).
16166:
16167: =item
16168: empty (directory at specified path on lond side is empty).
16169:
16170: =over
16171:
16172: This is currently not encountered because the &ls3, &ls2,
16173: &ls (_handler) routines on the lond side do not filter out
16174: . and .. from a directory listing.
16175:
16176: =back
16177:
16178: =back
16179:
16180: =back
16181:
16182: =item *
16183:
16184: spareserver() : find server with least workload from spare.tab
16185:
16186:
16187: =item *
16188:
16189: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
16190: if there is no corresponding loncapa host.
16191:
16192: =back
16193:
16194:
16195: =head2 Apache Request
16196:
16197: =over 4
16198:
16199: =item *
16200:
16201: ssi($url,%hash) : server side include, does a complete request cycle on url to
16202: localhost, posts hash
16203:
16204: =back
16205:
16206: =head2 Data to String to Data
16207:
16208: =over 4
16209:
16210: =item *
16211:
16212: hash2str(%hash) : convert a hash into a string complete with escaping and '='
16213: and '&' separators, supports elements that are arrayrefs and hashrefs
16214:
16215: =item *
16216:
16217: hashref2str($hashref) : convert a hashref into a string complete with
16218: escaping and '=' and '&' separators, supports elements that are
16219: arrayrefs and hashrefs
16220:
16221: =item *
16222:
16223: arrayref2str($arrayref) : convert an arrayref into a string complete
16224: with escaping and '&' separators, supports elements that are arrayrefs
16225: and hashrefs
16226:
16227: =item *
16228:
16229: str2hash($string) : convert string to hash using unescaping and
16230: splitting on '=' and '&', supports elements that are arrayrefs and
16231: hashrefs
16232:
16233: =item *
16234:
16235: str2array($string) : convert string to hash using unescaping and
16236: splitting on '&', supports elements that are arrayrefs and hashrefs
16237:
16238: =back
16239:
16240: =head2 Logging Routines
16241:
16242:
16243: These routines allow one to make log messages in the lonnet.log and
16244: lonnet.perm logfiles.
16245:
16246: =over 4
16247:
16248: =item *
16249:
16250: logtouch() : make sure the logfile, lonnet.log, exists
16251:
16252: =item *
16253:
16254: logthis() : append message to the normal lonnet.log file, it gets
16255: preiodically rolled over and deleted.
16256:
16257: =item *
16258:
16259: logperm() : append a permanent message to lonnet.perm.log, this log
16260: file never gets deleted by any automated portion of the system, only
16261: messages of critical importance should go in here.
16262:
16263:
16264: =back
16265:
16266: =head2 General File Helper Routines
16267:
16268: =over 4
16269:
16270: =item *
16271:
16272: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
16273: (a) files in /uploaded
16274: (i) If a local copy of the file exists -
16275: compares modification date of local copy with last-modified date for
16276: definitive version stored on home server for course. If local copy is
16277: stale, requests a new version from the home server and stores it.
16278: If the original has been removed from the home server, then local copy
16279: is unlinked.
16280: (ii) If local copy does not exist -
16281: requests the file from the home server and stores it.
16282:
16283: If $caller is 'uploadrep':
16284: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
16285: for request for files originally uploaded via DOCS.
16286: - returns 'ok' if fresh local copy now available, -1 otherwise.
16287:
16288: Otherwise:
16289: This indicates a call from the content generation phase of the request.
16290: - returns the entire contents of the file or -1.
16291:
16292: (b) files in /res
16293: - returns the entire contents of a file or -1;
16294: it properly subscribes to and replicates the file if neccessary.
16295:
16296:
16297: =item *
16298:
16299: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
16300: reference
16301:
16302: returns either a stat() list of data about the file or an empty list
16303: if the file doesn't exist or couldn't find out about it (connection
16304: problems or user unknown)
16305:
16306: =item *
16307:
16308: filelocation($dir,$file) : returns file system location of a file
16309: based on URI; meant to be "fairly clean" absolute reference, $dir is a
16310: directory that relative $file lookups are to looked in ($dir of /a/dir
16311: and a file of ../bob will become /a/bob)
16312:
16313: =item *
16314:
16315: hreflocation($dir,$file) : returns file system location or a URL; same as
16316: filelocation except for hrefs
16317:
16318: =item *
16319:
16320: declutter() : declutters URLs -- remove beginning slashes, 'res' etc.
16321: also removes beginning /home/httpd/html unless /priv/ follows it.
16322:
16323: =back
16324:
16325: =head2 Usererfile file routines (/uploaded*)
16326:
16327: =over 4
16328:
16329: =item *
16330:
16331: userfileupload(): main rotine for putting a file in a user or course's
16332: filespace, arguments are,
16333:
16334: formname - required - this is the name of the element in $env where the
16335: filename, and the contents of the file to create/modifed exist
16336: the filename is in $env{'form.'.$formname.'.filename'} and the
16337: contents of the file is located in $env{'form.'.$formname}
16338: context - if coursedoc, store the file in the course of the active role
16339: of the current user;
16340: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
16341: if 'canceloverwrite': delete file in tmp/overwrites directory
16342: subdir - required - subdirectory to put the file in under ../userfiles/
16343: if undefined, it will be placed in "unknown"
16344:
16345: (This routine calls clean_filename() to remove any dangerous
16346: characters from the filename, and then calls finuserfileupload() to
16347: complete the transaction)
16348:
16349: returns either the url of the uploaded file (/uploaded/....) if successful
16350: and /adm/notfound.html if unsuccessful
16351:
16352: =item *
16353:
16354: clean_filename(): routine for cleaing a filename up for storage in
16355: userfile space, argument is:
16356:
16357: filename - proposed filename
16358:
16359: returns: the new clean filename
16360:
16361: =item *
16362:
16363: finishuserfileupload(): routine that creates and sends the file to
16364: userspace, probably shouldn't be called directly
16365:
16366: docuname: username or courseid of destination for the file
16367: docudom: domain of user/course of destination for the file
16368: formname: same as for userfileupload()
16369: fname: filename (including subdirectories) for the file
16370: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
16371: if hashref, and context is scantron, will convert csv format to standard format
16372: allfiles: reference to hash used to store objects found by parser
16373: codebase: reference to hash used for codebases of java objects found by parser
16374: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
16375: thumbheight: height (pixels) of thumbnail to be created for uploaded image
16376: resizewidth: width to be used to resize image using resizeImage from ImageMagick
16377: resizeheight: height to be used to resize image using resizeImage from ImageMagick
16378: context: if 'overwrite', will move the uploaded file from its temporary location to
16379: userfiles to facilitate overwriting a previously uploaded file with same name.
16380: mimetype: reference to scalar to accommodate mime type determined
16381: from File::MMagic if $parser = parse.
16382:
16383: returns either the url of the uploaded file (/uploaded/....) if successful
16384: and /adm/notfound.html if unsuccessful (or an error message if context
16385: was 'overwrite').
16386:
16387:
16388: =item *
16389:
16390: renameuserfile(): renames an existing userfile to a new name
16391:
16392: Args:
16393: docuname: username or courseid of destination for the file
16394: docudom: domain of user/course of destination for the file
16395: old: current file name (including any subdirs under userfiles)
16396: new: desired file name (including any subdirs under userfiles)
16397:
16398: =item *
16399:
16400: mkdiruserfile(): creates a directory is a userfiles dir
16401:
16402: Args:
16403: docuname: username or courseid of destination for the file
16404: docudom: domain of user/course of destination for the file
16405: dir: dir to create (including any subdirs under userfiles)
16406:
16407: =item *
16408:
16409: removeuserfile(): removes a file that exists in userfiles
16410:
16411: Args:
16412: docuname: username or courseid of destination for the file
16413: docudom: domain of user/course of destination for the file
16414: fname: filname to delete (including any subdirs under userfiles)
16415:
16416: =item *
16417:
16418: removeuploadedurl(): convience function for removeuserfile()
16419:
16420: Args:
16421: url: a full /uploaded/... url to delete
16422:
16423: =item *
16424:
16425: get_portfile_permissions():
16426: Args:
16427: domain: domain of user or course contain the portfolio files
16428: user: name of user or num of course contain the portfolio files
16429: Returns:
16430: hashref of a dump of the proper file_permissions.db
16431:
16432:
16433: =item *
16434:
16435: get_access_controls():
16436:
16437: Args:
16438: current_permissions: the hash ref returned from get_portfile_permissions()
16439: group: (optional) the group you want the files associated with
16440: file: (optional) the file you want access info on
16441:
16442: Returns:
16443: a hash (keys are file names) of hashes containing
16444: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
16445: values are XML containing access control settings (see below)
16446:
16447: Internal notes:
16448:
16449: access controls are stored in file_permissions.db as key=value pairs.
16450: key -> path to file/file_name\0uniqueID:scope_end_start
16451: where scope -> public,guest,course,group,domains or users.
16452: end -> UNIX time for end of access (0 -> no end date)
16453: start -> UNIX time for start of access
16454:
16455: value -> XML description of access control
16456: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
16457: <start></start>
16458: <end></end>
16459:
16460: <password></password> for scope type = guest
16461:
16462: <domain></domain> for scope type = course or group
16463: <number></number>
16464: <roles id="">
16465: <role></role>
16466: <access></access>
16467: <section></section>
16468: <group></group>
16469: </roles>
16470:
16471: <dom></dom> for scope type = domains
16472:
16473: <users> for scope type = users
16474: <user>
16475: <uname></uname>
16476: <udom></udom>
16477: </user>
16478: </users>
16479: </scope>
16480:
16481: Access data is also aggregated for each file in an additional key=value pair:
16482: key -> path to file/file_name\0accesscontrol
16483: value -> reference to hash
16484: hash contains key = value pairs
16485: where key = uniqueID:scope_end_start
16486: value = UNIX time record was last updated
16487:
16488: Used to improve speed of look-ups of access controls for each file.
16489:
16490: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
16491:
16492: =item *
16493:
16494: modify_access_controls():
16495:
16496: Modifies access controls for a portfolio file
16497: Args
16498: 1. file name
16499: 2. reference to hash of required changes,
16500: 3. domain
16501: 4. username
16502: where domain,username are the domain of the portfolio owner
16503: (either a user or a course)
16504:
16505: Returns:
16506: 1. result of additions or updates ('ok' or 'error', with error message).
16507: 2. result of deletions ('ok' or 'error', with error message).
16508: 3. reference to hash of any new or updated access controls.
16509: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
16510: key = integer (inbound ID)
16511: value = uniqueID
16512:
16513: =item *
16514:
16515: get_timebased_id():
16516:
16517: Attempts to get a unique timestamp-based suffix for use with items added to a
16518: course via the Course Editor (e.g., folders, composite pages,
16519: group bulletin boards).
16520:
16521: Args: (first three required; six others optional)
16522:
16523: 1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
16524: docssequence, or name of group
16525:
16526: 2. keyid (alphanumeric): name of temporary locking key in hash,
16527: e.g., num, boardids
16528:
16529: 3. namespace: name of gdbm file used to store suffixes already assigned;
16530: file will be named nohist_namespace.db
16531:
16532: 4. cdom: domain of course; default is current course domain from %env
16533:
16534: 5. cnum: course number; default is current course number from %env
16535:
16536: 6. idtype: set to concat if an additional digit is to be appended to the
16537: unix timestamp to form the suffix, if the plain timestamp is already
16538: in use. Default is to not do this, but simply increment the unix
16539: timestamp by 1 until a unique key is obtained.
16540:
16541: 7. who: holder of locking key; defaults to user:domain for user.
16542:
16543: 8. locktries: number of attempts to obtain a lock (sleep of 1s before
16544: retrying); default is 3.
16545:
16546: 9. maxtries: number of attempts to obtain a unique suffix; default is 20.
16547:
16548: Returns:
16549:
16550: 1. suffix obtained (numeric)
16551:
16552: 2. result of deleting locking key (ok if deleted, or lock never obtained)
16553:
16554: 3. error: contains (localized) error message if an error occurred.
16555:
16556:
16557: =back
16558:
16559: =head2 HTTP Helper Routines
16560:
16561: =over 4
16562:
16563: =item *
16564:
16565: escape() : unpack non-word characters into CGI-compatible hex codes
16566:
16567: =item *
16568:
16569: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
16570:
16571: =back
16572:
16573: =head1 PRIVATE SUBROUTINES
16574:
16575: =head2 Underlying communication routines (Shouldn't call)
16576:
16577: =over 4
16578:
16579: =item *
16580:
16581: subreply() : tries to pass a message to lonc, returns con_lost if incapable
16582:
16583: =item *
16584:
16585: reply() : uses subreply to send a message to remote machine, logs all failures
16586:
16587: =item *
16588:
16589: critical() : passes a critical message to another server; if cannot
16590: get through then place message in connection buffer directory and
16591: returns con_delayed, if incapable of saving message, returns
16592: con_failed
16593:
16594: =item *
16595:
16596: reconlonc() : tries to reconnect lonc client processes.
16597:
16598: =back
16599:
16600: =head2 Resource Access Logging
16601:
16602: =over 4
16603:
16604: =item *
16605:
16606: flushcourselogs() : flush (save) buffer logs and access logs
16607:
16608: =item *
16609:
16610: courselog($what) : save message for course in hash
16611:
16612: =item *
16613:
16614: courseacclog($what) : save message for course using &courselog(). Perform
16615: special processing for specific resource types (problems, exams, quizzes, etc).
16616:
16617: =item *
16618:
16619: goodbye() : flush course logs and log shutting down; it is called in srm.conf
16620: as a PerlChildExitHandler
16621:
16622: =back
16623:
16624: =head2 Other
16625:
16626: =over 4
16627:
16628: =item *
16629:
16630: symblist($mapname,%newhash) : update symbolic storage links
16631:
16632: =back
16633:
16634: =cut
16635:
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