1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1386 2018/10/19 16:54:58 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:
77:
78: use Encode;
79:
80: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
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:
105: use File::Copy;
106:
107: my $readit;
108: my $max_connection_retries = 20; # Or some such value.
109:
110: require Exporter;
111:
112: our @ISA = qw (Exporter);
113: our @EXPORT = qw(%env);
114:
115:
116: # ------------------------------------ Logging (parameters, docs, slots, roles)
117: {
118: my $logid;
119: sub write_log {
120: my ($context,$hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
121: if ($context eq 'course') {
122: if (($cnum eq '') || ($cdom eq '')) {
123: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
124: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
125: }
126: }
127: $logid ++;
128: my $now = time();
129: my $id=$now.'00000'.$$.'00000'.$logid;
130: my $logentry = {
131: $id => {
132: 'exe_uname' => $env{'user.name'},
133: 'exe_udom' => $env{'user.domain'},
134: 'exe_time' => $now,
135: 'exe_ip' => $ENV{'REMOTE_ADDR'},
136: 'delflag' => $delflag,
137: 'logentry' => $storehash,
138: 'uname' => $uname,
139: 'udom' => $udom,
140: }
141: };
142: return &put('nohist_'.$hash_name,$logentry,$cdom,$cnum);
143: }
144: }
145:
146: sub logtouch {
147: my $execdir=$perlvar{'lonDaemons'};
148: unless (-e "$execdir/logs/lonnet.log") {
149: open(my $fh,">>","$execdir/logs/lonnet.log");
150: close $fh;
151: }
152: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
153: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
154: }
155:
156: sub logthis {
157: my $message=shift;
158: my $execdir=$perlvar{'lonDaemons'};
159: my $now=time;
160: my $local=localtime($now);
161: if (open(my $fh,">>","$execdir/logs/lonnet.log")) {
162: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
163: print $fh $logstring;
164: close($fh);
165: }
166: return 1;
167: }
168:
169: sub logperm {
170: my $message=shift;
171: my $execdir=$perlvar{'lonDaemons'};
172: my $now=time;
173: my $local=localtime($now);
174: if (open(my $fh,">>","$execdir/logs/lonnet.perm.log")) {
175: print $fh "$now:$message:$local\n";
176: close($fh);
177: }
178: return 1;
179: }
180:
181: sub create_connection {
182: my ($hostname,$lonid) = @_;
183: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
184: Type => SOCK_STREAM,
185: Timeout => 10);
186: return 0 if (!$client);
187: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
188: my $result = <$client>;
189: chomp($result);
190: return 1 if ($result eq 'done');
191: return 0;
192: }
193:
194: sub get_server_timezone {
195: my ($cnum,$cdom) = @_;
196: my $home=&homeserver($cnum,$cdom);
197: if ($home ne 'no_host') {
198: my $cachetime = 24*3600;
199: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
200: if (defined($cached)) {
201: return $timezone;
202: } else {
203: my $timezone = &reply('servertimezone',$home);
204: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
205: }
206: }
207: }
208:
209: sub get_server_distarch {
210: my ($lonhost,$ignore_cache) = @_;
211: if (defined($lonhost)) {
212: if (!defined(&hostname($lonhost))) {
213: return;
214: }
215: my $cachetime = 12*3600;
216: if (!$ignore_cache) {
217: my ($distarch,$cached)=&is_cached_new('serverdistarch',$lonhost);
218: if (defined($cached)) {
219: return $distarch;
220: }
221: }
222: my $rep = &reply('serverdistarch',$lonhost);
223: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
224: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
225: $rep eq '') {
226: return &do_cache_new('serverdistarch',$lonhost,$rep,$cachetime);
227: }
228: }
229: return;
230: }
231:
232: sub get_servercerts_info {
233: my ($lonhost,$hostname,$context) = @_;
234: return if ($lonhost eq '');
235: if ($hostname eq '') {
236: $hostname = &hostname($lonhost);
237: }
238: return if ($hostname eq '');
239: my ($rep,$uselocal);
240: if (grep { $_ eq $lonhost } ¤t_machine_ids()) {
241: $uselocal = 1;
242: }
243: if (($context ne 'cgi') && ($uselocal)) {
244: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
245: if ($distro eq '') {
246: $uselocal = 0;
247: } elsif ($distro =~ /^(?:centos|redhat|scientific)(\d+)$/) {
248: if ($1 < 6) {
249: $uselocal = 0;
250: }
251: } elsif ($distro =~ /^(?:sles)(\d+)$/) {
252: if ($1 < 12) {
253: $uselocal = 0;
254: }
255: }
256: }
257: if ($uselocal) {
258: $rep = LONCAPA::Lond::server_certs(\%perlvar,$lonhost,$hostname);
259: } else {
260: $rep=&reply('servercerts',$lonhost);
261: }
262: my ($result,%returnhash);
263: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
264: ($rep eq 'unknown_cmd')) {
265: $result = $rep;
266: } else {
267: $result = 'ok';
268: my @pairs=split(/\&/,$rep);
269: foreach my $item (@pairs) {
270: my ($key,$value)=split(/=/,$item,2);
271: my $what = &unescape($key);
272: $returnhash{$what}=&thaw_unescape($value);
273: }
274: }
275: return ($result,\%returnhash);
276: }
277:
278: sub get_server_loncaparev {
279: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
280: if (defined($lonhost)) {
281: if (!defined(&hostname($lonhost))) {
282: undef($lonhost);
283: }
284: }
285: if (!defined($lonhost)) {
286: if (defined(&domain($dom,'primary'))) {
287: $lonhost=&domain($dom,'primary');
288: if ($lonhost eq 'no_host') {
289: undef($lonhost);
290: }
291: }
292: }
293: if (defined($lonhost)) {
294: my $cachetime = 12*3600;
295: if (!$ignore_cache) {
296: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
297: if (defined($cached)) {
298: return $loncaparev;
299: }
300: }
301: my ($answer,$loncaparev);
302: my @ids=¤t_machine_ids();
303: if (grep(/^\Q$lonhost\E$/,@ids)) {
304: $answer = $perlvar{'lonVersion'};
305: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
306: $loncaparev = $1;
307: }
308: } else {
309: $answer = &reply('serverloncaparev',$lonhost);
310: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
311: if ($caller eq 'loncron') {
312: my $protocol = $protocol{$lonhost};
313: $protocol = 'http' if ($protocol ne 'https');
314: my $url = $protocol.'://'.&hostname($lonhost).'/adm/about.html';
315: my $request=new HTTP::Request('GET',$url);
316: my $response=&LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,4,1);
317: unless ($response->is_error()) {
318: my $content = $response->content;
319: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
320: $loncaparev = $1;
321: }
322: }
323: } else {
324: $loncaparev = $loncaparevs{$lonhost};
325: }
326: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
327: $loncaparev = $1;
328: }
329: }
330: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
331: }
332: }
333:
334: sub get_server_homeID {
335: my ($hostname,$ignore_cache,$caller) = @_;
336: unless ($ignore_cache) {
337: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
338: if (defined($cached)) {
339: return $serverhomeID;
340: }
341: }
342: my $cachetime = 12*3600;
343: my $serverhomeID;
344: if ($caller eq 'loncron') {
345: my @machine_ids = &machine_ids($hostname);
346: foreach my $id (@machine_ids) {
347: my $response = &reply('serverhomeID',$id);
348: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
349: $serverhomeID = $response;
350: last;
351: }
352: }
353: if ($serverhomeID eq '') {
354: $serverhomeID = $machine_ids[-1];
355: }
356: } else {
357: $serverhomeID = $serverhomeIDs{$hostname};
358: }
359: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
360: }
361:
362: sub get_remote_globals {
363: my ($lonhost,$whathash,$ignore_cache) = @_;
364: my ($result,%returnhash,%whatneeded);
365: if (ref($whathash) eq 'HASH') {
366: foreach my $what (sort(keys(%{$whathash}))) {
367: my $hashid = $lonhost.'-'.$what;
368: my ($response,$cached);
369: unless ($ignore_cache) {
370: ($response,$cached)=&is_cached_new('lonnetglobal',$hashid);
371: }
372: if (defined($cached)) {
373: $returnhash{$what} = $response;
374: } else {
375: $whatneeded{$what} = 1;
376: }
377: }
378: if (keys(%whatneeded) == 0) {
379: $result = 'ok';
380: } else {
381: my $requested = &freeze_escape(\%whatneeded);
382: my $rep=&reply('readlonnetglobal:'.$requested,$lonhost);
383: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
384: ($rep eq 'unknown_cmd')) {
385: $result = $rep;
386: } else {
387: $result = 'ok';
388: my @pairs=split(/\&/,$rep);
389: foreach my $item (@pairs) {
390: my ($key,$value)=split(/=/,$item,2);
391: my $what = &unescape($key);
392: my $hashid = $lonhost.'-'.$what;
393: $returnhash{$what}=&thaw_unescape($value);
394: &do_cache_new('lonnetglobal',$hashid,$returnhash{$what},600);
395: }
396: }
397: }
398: }
399: return ($result,\%returnhash);
400: }
401:
402: sub remote_devalidate_cache {
403: my ($lonhost,$cachekeys) = @_;
404: my $items;
405: return unless (ref($cachekeys) eq 'ARRAY');
406: my $cachestr = join('&',@{$cachekeys});
407: my $response = &reply('devalidatecache:'.&escape($cachestr),$lonhost);
408: return $response;
409: }
410:
411: # -------------------------------------------------- Non-critical communication
412: sub subreply {
413: my ($cmd,$server)=@_;
414: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
415: #
416: # With loncnew process trimming, there's a timing hole between lonc server
417: # process exit and the master server picking up the listen on the AF_UNIX
418: # socket. In that time interval, a lock file will exist:
419:
420: my $lockfile=$peerfile.".lock";
421: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
422: sleep(0.1);
423: }
424: # At this point, either a loncnew parent is listening or an old lonc
425: # or loncnew child is listening so we can connect or everything's dead.
426: #
427: # We'll give the connection a few tries before abandoning it. If
428: # connection is not possible, we'll con_lost back to the client.
429: #
430: my $client;
431: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
432: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
433: Type => SOCK_STREAM,
434: Timeout => 10);
435: if ($client) {
436: last; # Connected!
437: } else {
438: &create_connection(&hostname($server),$server);
439: }
440: sleep(0.1); # Try again later if failed connection.
441: }
442: my $answer;
443: if ($client) {
444: print $client "sethost:$server:$cmd\n";
445: $answer=<$client>;
446: if (!$answer) { $answer="con_lost"; }
447: chomp($answer);
448: } else {
449: $answer = 'con_lost'; # Failed connection.
450: }
451: return $answer;
452: }
453:
454: sub reply {
455: my ($cmd,$server)=@_;
456: unless (defined(&hostname($server))) { return 'no_such_host'; }
457: my $answer=subreply($cmd,$server);
458: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
459: &logthis("<font color=\"blue\">WARNING:".
460: " $cmd to $server returned $answer</font>");
461: }
462: return $answer;
463: }
464:
465: # ----------------------------------------------------------- Send USR1 to lonc
466:
467: sub reconlonc {
468: my ($lonid) = @_;
469: if ($lonid) {
470: my $hostname = &hostname($lonid);
471: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
472: if ($hostname && -e $peerfile) {
473: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
474: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
475: Type => SOCK_STREAM,
476: Timeout => 10);
477: if ($client) {
478: print $client ("reset_retries\n");
479: my $answer=<$client>;
480: #reset just this one.
481: }
482: }
483: return;
484: }
485:
486: &logthis("Trying to reconnect lonc");
487: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
488: if (open(my $fh,"<",$loncfile)) {
489: my $loncpid=<$fh>;
490: chomp($loncpid);
491: if (kill 0 => $loncpid) {
492: &logthis("lonc at pid $loncpid responding, sending USR1");
493: kill USR1 => $loncpid;
494: sleep 1;
495: } else {
496: &logthis(
497: "<font color=\"blue\">WARNING:".
498: " lonc at pid $loncpid not responding, giving up</font>");
499: }
500: } else {
501: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
502: }
503: }
504:
505: # ------------------------------------------------------ Critical communication
506:
507: sub critical {
508: my ($cmd,$server)=@_;
509: unless (&hostname($server)) {
510: &logthis("<font color=\"blue\">WARNING:".
511: " Critical message to unknown server ($server)</font>");
512: return 'no_such_host';
513: }
514: my $answer=reply($cmd,$server);
515: if ($answer eq 'con_lost') {
516: &reconlonc($server);
517: my $answer=reply($cmd,$server);
518: if ($answer eq 'con_lost') {
519: my $now=time;
520: my $middlename=$cmd;
521: $middlename=substr($middlename,0,16);
522: $middlename=~s/\W//g;
523: my $dfilename=
524: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
525: $dumpcount++;
526: {
527: my $dfh;
528: if (open($dfh,">",$dfilename)) {
529: print $dfh "$cmd\n";
530: close($dfh);
531: }
532: }
533: sleep 1;
534: my $wcmd='';
535: {
536: my $dfh;
537: if (open($dfh,"<",$dfilename)) {
538: $wcmd=<$dfh>;
539: close($dfh);
540: }
541: }
542: chomp($wcmd);
543: if ($wcmd eq $cmd) {
544: &logthis("<font color=\"blue\">WARNING: ".
545: "Connection buffer $dfilename: $cmd</font>");
546: &logperm("D:$server:$cmd");
547: return 'con_delayed';
548: } else {
549: &logthis("<font color=\"red\">CRITICAL:"
550: ." Critical connection failed: $server $cmd</font>");
551: &logperm("F:$server:$cmd");
552: return 'con_failed';
553: }
554: }
555: }
556: return $answer;
557: }
558:
559: # ------------------------------------------- check if return value is an error
560:
561: sub error {
562: my ($result) = @_;
563: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
564: if ($2 == 2) { return undef; }
565: return $1;
566: }
567: return undef;
568: }
569:
570: sub convert_and_load_session_env {
571: my ($lonidsdir,$handle)=@_;
572: my @profile;
573: {
574: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
575: if (!$opened) {
576: return 0;
577: }
578: flock($idf,LOCK_SH);
579: @profile=<$idf>;
580: close($idf);
581: }
582: my %temp_env;
583: foreach my $line (@profile) {
584: if ($line !~ m/=/) {
585: return 0;
586: }
587: chomp($line);
588: my ($envname,$envvalue)=split(/=/,$line,2);
589: $temp_env{&unescape($envname)} = &unescape($envvalue);
590: }
591: unlink("$lonidsdir/$handle.id");
592: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
593: 0640)) {
594: %disk_env = %temp_env;
595: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
596: untie(%disk_env);
597: }
598: return 1;
599: }
600:
601: # ------------------------------------------- Transfer profile into environment
602: my $env_loaded;
603: sub transfer_profile_to_env {
604: my ($lonidsdir,$handle,$force_transfer) = @_;
605: if (!$force_transfer && $env_loaded) { return; }
606:
607: if (!defined($lonidsdir)) {
608: $lonidsdir = $perlvar{'lonIDsDir'};
609: }
610: if (!defined($handle)) {
611: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
612: }
613:
614: my $convert;
615: {
616: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
617: if (!$opened) {
618: return;
619: }
620: flock($idf,LOCK_SH);
621: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
622: &GDBM_READER(),0640)) {
623: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
624: untie(%disk_env);
625: } else {
626: $convert = 1;
627: }
628: }
629: if ($convert) {
630: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
631: &logthis("Failed to load session, or convert session.");
632: }
633: }
634:
635: my %remove;
636: while ( my $envname = each(%env) ) {
637: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
638: if ($time < time-300) {
639: $remove{$key}++;
640: }
641: }
642: }
643:
644: $env{'user.environment'} = "$lonidsdir/$handle.id";
645: $env_loaded=1;
646: foreach my $expired_key (keys(%remove)) {
647: &delenv($expired_key);
648: }
649: }
650:
651: # ---------------------------------------------------- Check for valid session
652: sub check_for_valid_session {
653: my ($r,$name,$userhashref,$domref) = @_;
654: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
655: my ($lonidsdir,$linkname,$pubname,$secure,$lonid);
656: if ($name eq 'lonDAV') {
657: $lonidsdir=$r->dir_config('lonDAVsessDir');
658: } else {
659: $lonidsdir=$r->dir_config('lonIDsDir');
660: if ($name eq '') {
661: $name = 'lonID';
662: }
663: }
664: if ($name eq 'lonID') {
665: $secure = 'lonSID';
666: $linkname = 'lonLinkID';
667: $pubname = 'lonPubID';
668: if (exists($cookies{$secure})) {
669: $lonid=$cookies{$secure};
670: } elsif (exists($cookies{$name})) {
671: $lonid=$cookies{$name};
672: } elsif (exists($cookies{$linkname})) {
673: $lonid=$cookies{$linkname};
674: } elsif (exists($cookies{$pubname})) {
675: $lonid=$cookies{$pubname};
676: }
677: } else {
678: $lonid=$cookies{$name};
679: }
680: return undef if (!$lonid);
681:
682: my $handle=&LONCAPA::clean_handle($lonid->value);
683: if (-l "$lonidsdir/$handle.id") {
684: my $link = readlink("$lonidsdir/$handle.id");
685: if ((-e $link) && ($link =~ m{^\Q$lonidsdir\E/(.+)\.id$})) {
686: $handle = $1;
687: }
688: }
689: if (!-e "$lonidsdir/$handle.id") {
690: if ((ref($domref)) && ($name eq 'lonID') &&
691: ($handle =~ /^($match_username)\_\d+\_($match_domain)\_(.+)$/)) {
692: my ($possuname,$possudom,$possuhome) = ($1,$2,$3);
693: if ((&domain($possudom) ne '') && (&homeserver($possuname,$possudom) eq $possuhome)) {
694: $$domref = $possudom;
695: }
696: }
697: return undef;
698: }
699:
700: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
701: return undef if (!$opened);
702:
703: flock($idf,LOCK_SH);
704: my %disk_env;
705: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
706: &GDBM_READER(),0640)) {
707: return undef;
708: }
709:
710: if (!defined($disk_env{'user.name'})
711: || !defined($disk_env{'user.domain'})) {
712: return undef;
713: }
714:
715: if (ref($userhashref) eq 'HASH') {
716: $userhashref->{'name'} = $disk_env{'user.name'};
717: $userhashref->{'domain'} = $disk_env{'user.domain'};
718: $userhashref->{'lti'} = $disk_env{'request.lti.login'};
719: if ($userhashref->{'lti'}) {
720: $userhashref->{'ltitarget'} = $disk_env{'request.lti.target'};
721: $userhashref->{'ltiuri'} = $disk_env{'request.lti.uri'};
722: }
723: }
724:
725: return $handle;
726: }
727:
728: sub timed_flock {
729: my ($file,$lock_type) = @_;
730: my $failed=0;
731: eval {
732: local $SIG{__DIE__}='DEFAULT';
733: local $SIG{ALRM}=sub {
734: $failed=1;
735: die("failed lock");
736: };
737: alarm(13);
738: flock($file,$lock_type);
739: alarm(0);
740: };
741: if ($failed) {
742: return undef;
743: } else {
744: return 1;
745: }
746: }
747:
748: # ---------------------------------------------------------- Append Environment
749:
750: sub appenv {
751: my ($newenv,$roles) = @_;
752: if (ref($newenv) eq 'HASH') {
753: foreach my $key (keys(%{$newenv})) {
754: my $refused = 0;
755: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
756: $refused = 1;
757: if (ref($roles) eq 'ARRAY') {
758: my ($type,$role) = ($key =~ m{^user\.(role|priv)\.(.+?)\./});
759: if (grep(/^\Q$role\E$/,@{$roles})) {
760: $refused = 0;
761: }
762: }
763: }
764: if ($refused) {
765: &logthis("<font color=\"blue\">WARNING: ".
766: "Attempt to modify environment ".$key." to ".$newenv->{$key}
767: .'</font>');
768: delete($newenv->{$key});
769: } else {
770: $env{$key}=$newenv->{$key};
771: }
772: }
773: my $lonids = $perlvar{'lonIDsDir'};
774: if ($env{'user.environment'} =~ m{^\Q$lonids/\E$match_username\_\d+\_$match_domain\_[\w\-.]+\.id$}) {
775: my $opened = open(my $env_file,'+<',$env{'user.environment'});
776: if ($opened
777: && &timed_flock($env_file,LOCK_EX)
778: &&
779: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
780: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
781: while (my ($key,$value) = each(%{$newenv})) {
782: $disk_env{$key} = $value;
783: }
784: untie(%disk_env);
785: }
786: }
787: }
788: return 'ok';
789: }
790: # ----------------------------------------------------- Delete from Environment
791:
792: sub delenv {
793: my ($delthis,$regexp,$roles) = @_;
794: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
795: my $refused = 1;
796: if (ref($roles) eq 'ARRAY') {
797: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
798: if (grep(/^\Q$role\E$/,@{$roles})) {
799: $refused = 0;
800: }
801: }
802: if ($refused) {
803: &logthis("<font color=\"blue\">WARNING: ".
804: "Attempt to delete from environment ".$delthis);
805: return 'error';
806: }
807: }
808: my $opened = open(my $env_file,'+<',$env{'user.environment'});
809: if ($opened
810: && &timed_flock($env_file,LOCK_EX)
811: &&
812: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
813: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
814: foreach my $key (keys(%disk_env)) {
815: if ($regexp) {
816: if ($key=~/^$delthis/) {
817: delete($env{$key});
818: delete($disk_env{$key});
819: }
820: } else {
821: if ($key=~/^\Q$delthis\E/) {
822: delete($env{$key});
823: delete($disk_env{$key});
824: }
825: }
826: }
827: untie(%disk_env);
828: }
829: return 'ok';
830: }
831:
832: sub get_env_multiple {
833: my ($name) = @_;
834: my @values;
835: if (defined($env{$name})) {
836: # exists is it an array
837: if (ref($env{$name})) {
838: @values=@{ $env{$name} };
839: } else {
840: $values[0]=$env{$name};
841: }
842: }
843: return(@values);
844: }
845:
846: # ------------------------------------------------------------------- Locking
847:
848: sub set_lock {
849: my ($text)=@_;
850: $locknum++;
851: my $id=$$.'-'.$locknum;
852: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
853: 'session.lock.'.$id => $text});
854: return $id;
855: }
856:
857: sub get_locks {
858: my $num=0;
859: my %texts=();
860: foreach my $lock (split(/\,/,$env{'session.locks'})) {
861: if ($lock=~/\w/) {
862: $num++;
863: $texts{$lock}=$env{'session.lock.'.$lock};
864: }
865: }
866: return ($num,%texts);
867: }
868:
869: sub remove_lock {
870: my ($id)=@_;
871: my $newlocks='';
872: foreach my $lock (split(/\,/,$env{'session.locks'})) {
873: if (($lock=~/\w/) && ($lock ne $id)) {
874: $newlocks.=','.$lock;
875: }
876: }
877: &appenv({'session.locks' => $newlocks});
878: &delenv('session.lock.'.$id);
879: }
880:
881: sub remove_all_locks {
882: my $activelocks=$env{'session.locks'};
883: foreach my $lock (split(/\,/,$env{'session.locks'})) {
884: if ($lock=~/\w/) {
885: &remove_lock($lock);
886: }
887: }
888: }
889:
890:
891: # ------------------------------------------ Find out current server userload
892: sub userload {
893: my $numusers=0;
894: {
895: opendir(LONIDS,$perlvar{'lonIDsDir'});
896: my $filename;
897: my $curtime=time;
898: while ($filename=readdir(LONIDS)) {
899: next if ($filename eq '.' || $filename eq '..');
900: next if ($filename =~ /publicuser_\d+\.id/);
901: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
902: if ($curtime-$mtime < 1800) { $numusers++; }
903: }
904: closedir(LONIDS);
905: }
906: my $userloadpercent=0;
907: my $maxuserload=$perlvar{'lonUserLoadLim'};
908: if ($maxuserload) {
909: $userloadpercent=100*$numusers/$maxuserload;
910: }
911: $userloadpercent=sprintf("%.2f",$userloadpercent);
912: return $userloadpercent;
913: }
914:
915: # ------------------------------ Find server with least workload from spare.tab
916:
917: sub spareserver {
918: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
919: my $spare_server;
920: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
921: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
922: : $userloadpercent;
923: my ($uint_dom,$remotesessions);
924: if (($udom ne '') && (&domain($udom) ne '')) {
925: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
926: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
927: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
928: $remotesessions = $udomdefaults{'remotesessions'};
929: }
930: my $spareshash = &this_host_spares($udom);
931: if (ref($spareshash) eq 'HASH') {
932: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
933: foreach my $try_server (@{ $spareshash->{'primary'} }) {
934: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
935: $try_server));
936: ($spare_server, $lowest_load) =
937: &compare_server_load($try_server, $spare_server, $lowest_load);
938: }
939: }
940:
941: my $found_server = ($spare_server ne '' && $lowest_load < 100);
942:
943: if (!$found_server) {
944: if (ref($spareshash->{'default'}) eq 'ARRAY') {
945: foreach my $try_server (@{ $spareshash->{'default'} }) {
946: next unless (&spare_can_host($udom,$uint_dom,
947: $remotesessions,$try_server));
948: ($spare_server, $lowest_load) =
949: &compare_server_load($try_server, $spare_server, $lowest_load);
950: }
951: }
952: }
953: }
954:
955: if (!$want_server_name) {
956: my $protocol = 'http';
957: if ($protocol{$spare_server} eq 'https') {
958: $protocol = $protocol{$spare_server};
959: }
960: if (defined($spare_server)) {
961: my $hostname = &hostname($spare_server);
962: if (defined($hostname)) {
963: $spare_server = $protocol.'://'.$hostname;
964: }
965: }
966: }
967: return $spare_server;
968: }
969:
970: sub compare_server_load {
971: my ($try_server, $spare_server, $lowest_load, $required) = @_;
972:
973: if ($required) {
974: my ($reqdmajor,$reqdminor) = ($required =~ /^(\d+)\.(\d+)$/);
975: my $remoterev = &get_server_loncaparev(undef,$try_server);
976: my ($major,$minor) = ($remoterev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
977: if (($major eq '' && $minor eq '') ||
978: (($reqdmajor > $major) || (($reqdmajor == $major) && ($reqdminor > $minor)))) {
979: return ($spare_server,$lowest_load);
980: }
981: }
982:
983: my $loadans = &reply('load', $try_server);
984: my $userloadans = &reply('userload',$try_server);
985:
986: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
987: return ($spare_server, $lowest_load); #didn't get a number from the server
988: }
989:
990: my $load;
991: if ($loadans =~ /\d/) {
992: if ($userloadans =~ /\d/) {
993: #both are numbers, pick the bigger one
994: $load = ($loadans > $userloadans) ? $loadans
995: : $userloadans;
996: } else {
997: $load = $loadans;
998: }
999: } else {
1000: $load = $userloadans;
1001: }
1002:
1003: if (($load =~ /\d/) && ($load < $lowest_load)) {
1004: $spare_server = $try_server;
1005: $lowest_load = $load;
1006: }
1007: return ($spare_server,$lowest_load);
1008: }
1009:
1010: # --------------------------- ask offload servers if user already has a session
1011: sub find_existing_session {
1012: my ($udom,$uname) = @_;
1013: my $spareshash = &this_host_spares($udom);
1014: if (ref($spareshash) eq 'HASH') {
1015: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
1016: foreach my $try_server (@{ $spareshash->{'primary'} }) {
1017: return $try_server if (&has_user_session($try_server, $udom, $uname));
1018: }
1019: }
1020: if (ref($spareshash->{'default'}) eq 'ARRAY') {
1021: foreach my $try_server (@{ $spareshash->{'default'} }) {
1022: return $try_server if (&has_user_session($try_server, $udom, $uname));
1023: }
1024: }
1025: }
1026: return;
1027: }
1028:
1029: # -------------------------------- ask if server already has a session for user
1030: sub has_user_session {
1031: my ($lonid,$udom,$uname) = @_;
1032: my $result = &reply(join(':','userhassession',
1033: map {&escape($_)} ($udom,$uname)),$lonid);
1034: return 1 if ($result eq 'ok');
1035:
1036: return 0;
1037: }
1038:
1039: # --------- determine least loaded server in a user's domain which allows login
1040:
1041: sub choose_server {
1042: my ($udom,$checkloginvia,$required,$skiploadbal) = @_;
1043: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
1044: my %servers = &get_servers($udom);
1045: my $lowest_load = 30000;
1046: my ($login_host,$hostname,$portal_path,$isredirect,$balancers);
1047: if ($skiploadbal) {
1048: ($balancers,my $cached)=&is_cached_new('loadbalancing',$udom);
1049: unless (defined($cached)) {
1050: my $cachetime = 60*60*24;
1051: my %domconfig =
1052: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1053: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1054: $balancers = &do_cache_new('loadbalancing',$udom,$domconfig{'loadbalancing'},
1055: $cachetime);
1056: }
1057: }
1058: }
1059: foreach my $lonhost (keys(%servers)) {
1060: if ($skiploadbal) {
1061: if (ref($balancers) eq 'HASH') {
1062: next if (exists($balancers->{$lonhost}));
1063: }
1064: }
1065: my $loginvia;
1066: if ($checkloginvia) {
1067: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
1068: if ($loginvia) {
1069: my ($server,$path) = split(/:/,$loginvia);
1070: ($login_host, $lowest_load) =
1071: &compare_server_load($server, $login_host, $lowest_load, $required);
1072: if ($login_host eq $server) {
1073: $portal_path = $path;
1074: $isredirect = 1;
1075: }
1076: } else {
1077: ($login_host, $lowest_load) =
1078: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1079: if ($login_host eq $lonhost) {
1080: $portal_path = '';
1081: $isredirect = '';
1082: }
1083: }
1084: } else {
1085: ($login_host, $lowest_load) =
1086: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1087: }
1088: }
1089: if ($login_host ne '') {
1090: $hostname = &hostname($login_host);
1091: }
1092: return ($login_host,$hostname,$portal_path,$isredirect,$lowest_load);
1093: }
1094:
1095: # --------------------------------------------- Try to change a user's password
1096:
1097: sub changepass {
1098: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
1099: $currentpass = &escape($currentpass);
1100: $newpass = &escape($newpass);
1101: my $lonhost = $perlvar{'lonHostID'};
1102: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
1103: $server);
1104: if (! $answer) {
1105: &logthis("No reply on password change request to $server ".
1106: "by $uname in domain $udom.");
1107: } elsif ($answer =~ "^ok") {
1108: &logthis("$uname in $udom successfully changed their password ".
1109: "on $server.");
1110: } elsif ($answer =~ "^pwchange_failure") {
1111: &logthis("$uname in $udom was unable to change their password ".
1112: "on $server. The action was blocked by either lcpasswd ".
1113: "or pwchange");
1114: } elsif ($answer =~ "^non_authorized") {
1115: &logthis("$uname in $udom did not get their password correct when ".
1116: "attempting to change it on $server.");
1117: } elsif ($answer =~ "^auth_mode_error") {
1118: &logthis("$uname in $udom attempted to change their password despite ".
1119: "not being locally or internally authenticated on $server.");
1120: } elsif ($answer =~ "^unknown_user") {
1121: &logthis("$uname in $udom attempted to change their password ".
1122: "on $server but were unable to because $server is not ".
1123: "their home server.");
1124: } elsif ($answer =~ "^refused") {
1125: &logthis("$server refused to change $uname in $udom password because ".
1126: "it was sent an unencrypted request to change the password.");
1127: } elsif ($answer =~ "invalid_client") {
1128: &logthis("$server refused to change $uname in $udom password because ".
1129: "it was a reset by e-mail originating from an invalid server.");
1130: }
1131: return $answer;
1132: }
1133:
1134: # ----------------------- Try to determine user's current authentication scheme
1135:
1136: sub queryauthenticate {
1137: my ($uname,$udom)=@_;
1138: my $uhome=&homeserver($uname,$udom);
1139: if (!$uhome) {
1140: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1141: return 'no_host';
1142: }
1143: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1144: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1145: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1146: }
1147: return $answer;
1148: }
1149:
1150: # --------- Try to authenticate user from domain's lib servers (first this one)
1151:
1152: sub authenticate {
1153: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1154: $upass=&escape($upass);
1155: $uname= &LONCAPA::clean_username($uname);
1156: my $uhome=&homeserver($uname,$udom,1);
1157: my $newhome;
1158: if ((!$uhome) || ($uhome eq 'no_host')) {
1159: # Maybe the machine was offline and only re-appeared again recently?
1160: &reconlonc();
1161: # One more
1162: $uhome=&homeserver($uname,$udom,1);
1163: if (($uhome eq 'no_host') && $checkdefauth) {
1164: if (defined(&domain($udom,'primary'))) {
1165: $newhome=&domain($udom,'primary');
1166: }
1167: if ($newhome ne '') {
1168: $uhome = $newhome;
1169: }
1170: }
1171: if ((!$uhome) || ($uhome eq 'no_host')) {
1172: &logthis("User $uname at $udom is unknown in authenticate");
1173: return 'no_host';
1174: }
1175: }
1176: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1177: if ($answer eq 'authorized') {
1178: if ($newhome) {
1179: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1180: return 'no_account_on_host';
1181: } else {
1182: &logthis("User $uname at $udom authorized by $uhome");
1183: return $uhome;
1184: }
1185: }
1186: if ($answer eq 'non_authorized') {
1187: &logthis("User $uname at $udom rejected by $uhome");
1188: return 'no_host';
1189: }
1190: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1191: return 'no_host';
1192: }
1193:
1194: sub can_host_session {
1195: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1196: my $canhost = 1;
1197: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1198: if (ref($remotesessions) eq 'HASH') {
1199: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1200: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1201: $canhost = 0;
1202: } else {
1203: $canhost = 1;
1204: }
1205: }
1206: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1207: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1208: $canhost = 1;
1209: } else {
1210: $canhost = 0;
1211: }
1212: }
1213: if ($canhost) {
1214: if ($remotesessions->{'version'} ne '') {
1215: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1216: if ($reqmajor ne '' && $reqminor ne '') {
1217: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1218: my $major = $1;
1219: my $minor = $2;
1220: if (($major < $reqmajor ) ||
1221: (($major == $reqmajor) && ($minor < $reqminor))) {
1222: $canhost = 0;
1223: }
1224: } else {
1225: $canhost = 0;
1226: }
1227: }
1228: }
1229: }
1230: }
1231: if ($canhost) {
1232: if (ref($hostedsessions) eq 'HASH') {
1233: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1234: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1235: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1236: if (($uint_dom ne '') &&
1237: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1238: $canhost = 0;
1239: } else {
1240: $canhost = 1;
1241: }
1242: }
1243: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1244: if (($uint_dom ne '') &&
1245: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1246: $canhost = 1;
1247: } else {
1248: $canhost = 0;
1249: }
1250: }
1251: }
1252: }
1253: return $canhost;
1254: }
1255:
1256: sub spare_can_host {
1257: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1258: my $canhost=1;
1259: my $try_server_hostname = &hostname($try_server);
1260: my $serverhomeID = &get_server_homeID($try_server_hostname);
1261: my $serverhomedom = &host_domain($serverhomeID);
1262: my %defdomdefaults = &get_domain_defaults($serverhomedom);
1263: if (ref($defdomdefaults{'offloadnow'}) eq 'HASH') {
1264: if ($defdomdefaults{'offloadnow'}{$try_server}) {
1265: $canhost = 0;
1266: }
1267: }
1268: if (($canhost) && ($uint_dom)) {
1269: my @intdoms;
1270: my $internet_names = &get_internet_names($try_server);
1271: if (ref($internet_names) eq 'ARRAY') {
1272: @intdoms = @{$internet_names};
1273: }
1274: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1275: my $remoterev = &get_server_loncaparev(undef,$try_server);
1276: $canhost = &can_host_session($udom,$try_server,$remoterev,
1277: $remotesessions,
1278: $defdomdefaults{'hostedsessions'});
1279: }
1280: }
1281: return $canhost;
1282: }
1283:
1284: sub this_host_spares {
1285: my ($dom) = @_;
1286: my ($dom_in_use,$lonhost_in_use,$result);
1287: my @hosts = ¤t_machine_ids();
1288: foreach my $lonhost (@hosts) {
1289: if (&host_domain($lonhost) eq $dom) {
1290: $dom_in_use = $dom;
1291: $lonhost_in_use = $lonhost;
1292: last;
1293: }
1294: }
1295: if ($dom_in_use ne '') {
1296: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1297: }
1298: if (ref($result) ne 'HASH') {
1299: $lonhost_in_use = $perlvar{'lonHostID'};
1300: $dom_in_use = &host_domain($lonhost_in_use);
1301: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1302: if (ref($result) ne 'HASH') {
1303: $result = \%spareid;
1304: }
1305: }
1306: return $result;
1307: }
1308:
1309: sub spares_for_offload {
1310: my ($dom_in_use,$lonhost_in_use) = @_;
1311: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1312: if (defined($cached)) {
1313: return $result;
1314: } else {
1315: my $cachetime = 60*60*24;
1316: my %domconfig =
1317: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1318: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1319: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1320: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1321: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1322: }
1323: }
1324: }
1325: }
1326: return;
1327: }
1328:
1329: sub get_lonbalancer_config {
1330: my ($servers) = @_;
1331: my ($currbalancer,$currtargets);
1332: if (ref($servers) eq 'HASH') {
1333: foreach my $server (keys(%{$servers})) {
1334: my %what = (
1335: spareid => 1,
1336: perlvar => 1,
1337: );
1338: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1339: if ($result eq 'ok') {
1340: if (ref($returnhash) eq 'HASH') {
1341: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1342: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1343: $currbalancer = $server;
1344: $currtargets = {};
1345: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1346: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1347: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1348: }
1349: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1350: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1351: }
1352: }
1353: last;
1354: }
1355: }
1356: }
1357: }
1358: }
1359: }
1360: return ($currbalancer,$currtargets);
1361: }
1362:
1363: sub check_loadbalancing {
1364: my ($uname,$udom,$caller) = @_;
1365: my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
1366: $rule_in_effect,$offloadto,$otherserver);
1367: my $lonhost = $perlvar{'lonHostID'};
1368: my @hosts = ¤t_machine_ids();
1369: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1370: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1371: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1372: my $serverhomedom = &host_domain($lonhost);
1373: my $domneedscache;
1374: my $cachetime = 60*60*24;
1375:
1376: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1377: $dom_in_use = $udom;
1378: $homeintdom = 1;
1379: } else {
1380: $dom_in_use = $serverhomedom;
1381: }
1382: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1383: unless (defined($cached)) {
1384: my %domconfig =
1385: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1386: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1387: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1388: } else {
1389: $domneedscache = $dom_in_use;
1390: }
1391: }
1392: if (ref($result) eq 'HASH') {
1393: ($is_balancer,$currtargets,$currrules) =
1394: &check_balancer_result($result,@hosts);
1395: if ($is_balancer) {
1396: if (ref($currrules) eq 'HASH') {
1397: if ($homeintdom) {
1398: if ($uname ne '') {
1399: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1400: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1401: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1402: $rule_in_effect = $currrules->{'_LC_author'};
1403: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1404: $rule_in_effect = $currrules->{'_LC_adv'}
1405: }
1406: }
1407: if ($rule_in_effect eq '') {
1408: my %userenv = &userenvironment($udom,$uname,'inststatus');
1409: if ($userenv{'inststatus'} ne '') {
1410: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1411: my ($othertitle,$usertypes,$types) =
1412: &Apache::loncommon::sorted_inst_types($udom);
1413: if (ref($types) eq 'ARRAY') {
1414: foreach my $type (@{$types}) {
1415: if (grep(/^\Q$type\E$/,@statuses)) {
1416: if (exists($currrules->{$type})) {
1417: $rule_in_effect = $currrules->{$type};
1418: }
1419: }
1420: }
1421: }
1422: } else {
1423: if (exists($currrules->{'default'})) {
1424: $rule_in_effect = $currrules->{'default'};
1425: }
1426: }
1427: }
1428: } else {
1429: if (exists($currrules->{'default'})) {
1430: $rule_in_effect = $currrules->{'default'};
1431: }
1432: }
1433: } else {
1434: if ($currrules->{'_LC_external'} ne '') {
1435: $rule_in_effect = $currrules->{'_LC_external'};
1436: }
1437: }
1438: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1439: $uname,$udom);
1440: }
1441: }
1442: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1443: ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1444: unless (defined($cached)) {
1445: my %domconfig =
1446: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1447: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1448: $result = &do_cache_new('loadbalancing',$serverhomedom,$domconfig{'loadbalancing'},$cachetime);
1449: } else {
1450: $domneedscache = $serverhomedom;
1451: }
1452: }
1453: if (ref($result) eq 'HASH') {
1454: ($is_balancer,$currtargets,$currrules) =
1455: &check_balancer_result($result,@hosts);
1456: if ($is_balancer) {
1457: if (ref($currrules) eq 'HASH') {
1458: if ($currrules->{'_LC_internetdom'} ne '') {
1459: $rule_in_effect = $currrules->{'_LC_internetdom'};
1460: }
1461: }
1462: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1463: $uname,$udom);
1464: }
1465: } else {
1466: if ($perlvar{'lonBalancer'} eq 'yes') {
1467: $is_balancer = 1;
1468: $offloadto = &this_host_spares($dom_in_use);
1469: }
1470: unless (defined($cached)) {
1471: $domneedscache = $serverhomedom;
1472: }
1473: }
1474: } else {
1475: if ($perlvar{'lonBalancer'} eq 'yes') {
1476: $is_balancer = 1;
1477: $offloadto = &this_host_spares($dom_in_use);
1478: }
1479: unless (defined($cached)) {
1480: $domneedscache = $serverhomedom;
1481: }
1482: }
1483: if ($domneedscache) {
1484: &do_cache_new('loadbalancing',$domneedscache,$is_balancer,$cachetime);
1485: }
1486: if ($is_balancer) {
1487: my $lowest_load = 30000;
1488: if (ref($offloadto) eq 'HASH') {
1489: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1490: foreach my $try_server (@{$offloadto->{'primary'}}) {
1491: ($otherserver,$lowest_load) =
1492: &compare_server_load($try_server,$otherserver,$lowest_load);
1493: }
1494: }
1495: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1496:
1497: if (!$found_server) {
1498: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1499: foreach my $try_server (@{$offloadto->{'default'}}) {
1500: ($otherserver,$lowest_load) =
1501: &compare_server_load($try_server,$otherserver,$lowest_load);
1502: }
1503: }
1504: }
1505: } elsif (ref($offloadto) eq 'ARRAY') {
1506: if (@{$offloadto} == 1) {
1507: $otherserver = $offloadto->[0];
1508: } elsif (@{$offloadto} > 1) {
1509: foreach my $try_server (@{$offloadto}) {
1510: ($otherserver,$lowest_load) =
1511: &compare_server_load($try_server,$otherserver,$lowest_load);
1512: }
1513: }
1514: }
1515: unless ($caller eq 'login') {
1516: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1517: $is_balancer = 0;
1518: if ($uname ne '' && $udom ne '') {
1519: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1520:
1521: &appenv({'user.loadbalexempt' => $lonhost,
1522: 'user.loadbalcheck.time' => time});
1523: }
1524: }
1525: }
1526: }
1527: }
1528: return ($is_balancer,$otherserver);
1529: }
1530:
1531: sub check_balancer_result {
1532: my ($result,@hosts) = @_;
1533: my ($is_balancer,$currtargets,$currrules);
1534: if (ref($result) eq 'HASH') {
1535: if ($result->{'lonhost'} ne '') {
1536: my $currbalancer = $result->{'lonhost'};
1537: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1538: $is_balancer = 1;
1539: $currtargets = $result->{'targets'};
1540: $currrules = $result->{'rules'};
1541: }
1542: } else {
1543: foreach my $key (keys(%{$result})) {
1544: if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&
1545: (ref($result->{$key}) eq 'HASH')) {
1546: $is_balancer = 1;
1547: $currrules = $result->{$key}{'rules'};
1548: $currtargets = $result->{$key}{'targets'};
1549: last;
1550: }
1551: }
1552: }
1553: }
1554: return ($is_balancer,$currtargets,$currrules);
1555: }
1556:
1557: sub get_loadbalancer_targets {
1558: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1559: my $offloadto;
1560: if ($rule_in_effect eq 'none') {
1561: return [$perlvar{'lonHostID'}];
1562: } elsif ($rule_in_effect eq '') {
1563: $offloadto = $currtargets;
1564: } else {
1565: if ($rule_in_effect eq 'homeserver') {
1566: my $homeserver = &homeserver($uname,$udom);
1567: if ($homeserver ne 'no_host') {
1568: $offloadto = [$homeserver];
1569: }
1570: } elsif ($rule_in_effect eq 'externalbalancer') {
1571: my %domconfig =
1572: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1573: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1574: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1575: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1576: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1577: }
1578: }
1579: } else {
1580: my %servers = &internet_dom_servers($udom);
1581: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1582: if (&hostname($remotebalancer) ne '') {
1583: $offloadto = [$remotebalancer];
1584: }
1585: }
1586: } elsif (&hostname($rule_in_effect) ne '') {
1587: $offloadto = [$rule_in_effect];
1588: }
1589: }
1590: return $offloadto;
1591: }
1592:
1593: sub internet_dom_servers {
1594: my ($dom) = @_;
1595: my (%uniqservers,%servers);
1596: my $primaryserver = &hostname(&domain($dom,'primary'));
1597: my @machinedoms = &machine_domains($primaryserver);
1598: foreach my $mdom (@machinedoms) {
1599: my %currservers = %servers;
1600: my %server = &get_servers($mdom);
1601: %servers = (%currservers,%server);
1602: }
1603: my %by_hostname;
1604: foreach my $id (keys(%servers)) {
1605: push(@{$by_hostname{$servers{$id}}},$id);
1606: }
1607: foreach my $hostname (sort(keys(%by_hostname))) {
1608: if (@{$by_hostname{$hostname}} > 1) {
1609: my $match = 0;
1610: foreach my $id (@{$by_hostname{$hostname}}) {
1611: if (&host_domain($id) eq $dom) {
1612: $uniqservers{$id} = $hostname;
1613: $match = 1;
1614: }
1615: }
1616: unless ($match) {
1617: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1618: }
1619: } else {
1620: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1621: }
1622: }
1623: return %uniqservers;
1624: }
1625:
1626: sub trusted_domains {
1627: my ($cmdtype,$calldom) = @_;
1628: my ($trusted,$untrusted);
1629: if (&domain($calldom) eq '') {
1630: return ($trusted,$untrusted);
1631: }
1632: unless ($cmdtype =~ /^(content|shared|enroll|coaurem|domroles|catalog|reqcrs|msg)$/) {
1633: return ($trusted,$untrusted);
1634: }
1635: my $callprimary = &domain($calldom,'primary');
1636: my $intcalldom = &Apache::lonnet::internet_dom($callprimary);
1637: if ($intcalldom eq '') {
1638: return ($trusted,$untrusted);
1639: }
1640:
1641: my ($trustconfig,$cached)=&Apache::lonnet::is_cached_new('trust',$calldom);
1642: unless (defined($cached)) {
1643: my %domconfig = &Apache::lonnet::get_dom('configuration',['trust'],$calldom);
1644: &Apache::lonnet::do_cache_new('trust',$calldom,$domconfig{'trust'},3600);
1645: $trustconfig = $domconfig{'trust'};
1646: }
1647: if (ref($trustconfig)) {
1648: my (%possexc,%possinc,@allexc,@allinc);
1649: if (ref($trustconfig->{$cmdtype}) eq 'HASH') {
1650: if (ref($trustconfig->{$cmdtype}->{'exc'}) eq 'ARRAY') {
1651: map { $possexc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'exc'}};
1652: }
1653: if (ref($trustconfig->{$cmdtype}->{'inc'}) eq 'ARRAY') {
1654: map { $possinc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'inc'}};
1655: }
1656: }
1657: if (keys(%possexc)) {
1658: if (keys(%possinc)) {
1659: foreach my $key (sort(keys(%possexc))) {
1660: next if ($key eq $intcalldom);
1661: unless ($possinc{$key}) {
1662: push(@allexc,$key);
1663: }
1664: }
1665: } else {
1666: @allexc = sort(keys(%possexc));
1667: }
1668: }
1669: if (keys(%possinc)) {
1670: $possinc{$intcalldom} = 1;
1671: @allinc = sort(keys(%possinc));
1672: }
1673: if ((@allexc > 0) || (@allinc > 0)) {
1674: my %doms_by_intdom;
1675: my %allintdoms = &all_host_intdom();
1676: my %alldoms = &all_host_domain();
1677: foreach my $key (%allintdoms) {
1678: if (ref($doms_by_intdom{$allintdoms{$key}}) eq 'ARRAY') {
1679: unless (grep(/^\Q$alldoms{$key}\E$/,@{$doms_by_intdom{$allintdoms{$key}}})) {
1680: push(@{$doms_by_intdom{$allintdoms{$key}}},$alldoms{$key});
1681: }
1682: } else {
1683: $doms_by_intdom{$allintdoms{$key}} = [$alldoms{$key}];
1684: }
1685: }
1686: foreach my $exc (@allexc) {
1687: if (ref($doms_by_intdom{$exc}) eq 'ARRAY') {
1688: $untrusted = $doms_by_intdom{$exc};
1689: }
1690: }
1691: foreach my $inc (@allinc) {
1692: if (ref($doms_by_intdom{$inc}) eq 'ARRAY') {
1693: $trusted = $doms_by_intdom{$inc};
1694: }
1695: }
1696: }
1697: }
1698: return ($trusted,$untrusted);
1699: }
1700:
1701: sub will_trust {
1702: my ($cmdtype,$domain,$possdom) = @_;
1703: return 1 if ($domain eq $possdom);
1704: my ($trustedref,$untrustedref) = &trusted_domains($cmdtype,$possdom);
1705: my $willtrust;
1706: if ((ref($trustedref) eq 'ARRAY') && (@{$trustedref} > 0)) {
1707: if (grep(/^\Q$domain\E$/,@{$trustedref})) {
1708: $willtrust = 1;
1709: }
1710: } elsif ((ref($untrustedref) eq 'ARRAY') && (@{$untrustedref} > 0)) {
1711: unless (grep(/^\Q$domain\E$/,@{$untrustedref})) {
1712: $willtrust = 1;
1713: }
1714: } else {
1715: $willtrust = 1;
1716: }
1717: return $willtrust;
1718: }
1719:
1720: # ---------------------- Find the homebase for a user from domain's lib servers
1721:
1722: my %homecache;
1723: sub homeserver {
1724: my ($uname,$udom,$ignoreBadCache)=@_;
1725: my $index="$uname:$udom";
1726:
1727: if (exists($homecache{$index})) { return $homecache{$index}; }
1728:
1729: my %servers = &get_servers($udom,'library');
1730: foreach my $tryserver (keys(%servers)) {
1731: next if ($ignoreBadCache ne 'true' &&
1732: exists($badServerCache{$tryserver}));
1733:
1734: my $answer=reply("home:$udom:$uname",$tryserver);
1735: if ($answer eq 'found') {
1736: delete($badServerCache{$tryserver});
1737: return $homecache{$index}=$tryserver;
1738: } elsif ($answer eq 'no_host') {
1739: $badServerCache{$tryserver}=1;
1740: }
1741: }
1742: return 'no_host';
1743: }
1744:
1745: # ----- Find the usernames behind a list of student/employee IDs or clicker IDs
1746:
1747: sub idget {
1748: my ($udom,$idsref,$namespace)=@_;
1749: my %returnhash=();
1750: my @ids=();
1751: if (ref($idsref) eq 'ARRAY') {
1752: @ids = @{$idsref};
1753: } else {
1754: return %returnhash;
1755: }
1756: if ($namespace eq '') {
1757: $namespace = 'ids';
1758: }
1759:
1760: my %servers = &get_servers($udom,'library');
1761: foreach my $tryserver (keys(%servers)) {
1762: my $idlist=join('&', map { &escape($_); } @ids);
1763: if ($namespace eq 'ids') {
1764: $idlist=~tr/A-Z/a-z/;
1765: }
1766: my $reply;
1767: if ($namespace eq 'ids') {
1768: $reply=&reply("idget:$udom:".$idlist,$tryserver);
1769: } else {
1770: $reply=&reply("getdom:$udom:$namespace:$idlist",$tryserver);
1771: }
1772: my @answer=();
1773: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1774: @answer=split(/\&/,$reply);
1775: } ;
1776: my $i;
1777: for ($i=0;$i<=$#ids;$i++) {
1778: if ($answer[$i]) {
1779: $returnhash{$ids[$i]}=&unescape($answer[$i]);
1780: }
1781: }
1782: }
1783: return %returnhash;
1784: }
1785:
1786: # ------------------------------------- Find the IDs behind a list of usernames
1787:
1788: sub idrget {
1789: my ($udom,@unames)=@_;
1790: my %returnhash=();
1791: foreach my $uname (@unames) {
1792: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1793: }
1794: return %returnhash;
1795: }
1796:
1797: # Store away a list of names and associated student/employee IDs or clicker IDs
1798:
1799: sub idput {
1800: my ($udom,$idsref,$uhom,$namespace)=@_;
1801: my %servers=();
1802: my %ids=();
1803: my %byid = ();
1804: if (ref($idsref) eq 'HASH') {
1805: %ids=%{$idsref};
1806: }
1807: if ($namespace eq '') {
1808: $namespace = 'ids';
1809: }
1810: foreach my $uname (keys(%ids)) {
1811: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1812: if ($uhom eq '') {
1813: $uhom=&homeserver($uname,$udom);
1814: }
1815: if ($uhom ne 'no_host') {
1816: my $esc_unam=&escape($uname);
1817: if ($namespace eq 'ids') {
1818: my $id=&escape($ids{$uname});
1819: $id=~tr/A-Z/a-z/;
1820: my $esc_unam=&escape($uname);
1821: $servers{$uhom}.=$id.'='.$esc_unam.'&';
1822: } else {
1823: my @currids = split(/,/,$ids{$uname});
1824: foreach my $id (@currids) {
1825: $byid{$uhom}{$id} .= $uname.',';
1826: }
1827: }
1828: }
1829: }
1830: if ($namespace eq 'clickers') {
1831: foreach my $server (keys(%byid)) {
1832: if (ref($byid{$server}) eq 'HASH') {
1833: foreach my $id (keys(%{$byid{$server}})) {
1834: $byid{$server} =~ s/,$//;
1835: $servers{$uhom}.=&escape($id).'='.&escape($byid{$server}).'&';
1836: }
1837: }
1838: }
1839: }
1840: foreach my $server (keys(%servers)) {
1841: $servers{$server} =~ s/\&$//;
1842: if ($namespace eq 'ids') {
1843: &critical('idput:'.$udom.':'.$servers{$server},$server);
1844: } else {
1845: &critical('updateclickers:'.$udom.':add:'.$servers{$server},$server);
1846: }
1847: }
1848: }
1849:
1850: # ------------- Delete unwanted student/employee IDs or clicker IDs from domain
1851:
1852: sub iddel {
1853: my ($udom,$idshashref,$uhome,$namespace)=@_;
1854: my %result=();
1855: my %ids=();
1856: my %byid = ();
1857: if (ref($idshashref) eq 'HASH') {
1858: %ids=%{$idshashref};
1859: } else {
1860: return %result;
1861: }
1862: if ($namespace eq '') {
1863: $namespace = 'ids';
1864: }
1865: my %servers=();
1866: while (my ($id,$unamestr) = each(%ids)) {
1867: if ($namespace eq 'ids') {
1868: my $uhom = $uhome;
1869: if ($uhom eq '') {
1870: $uhom=&homeserver($unamestr,$udom);
1871: }
1872: if ($uhom ne 'no_host') {
1873: $servers{$uhom}.='&'.&escape($id);
1874: }
1875: } else {
1876: my @curritems = split(/,/,$ids{$id});
1877: foreach my $uname (@curritems) {
1878: my $uhom = $uhome;
1879: if ($uhom eq '') {
1880: $uhom=&homeserver($uname,$udom);
1881: }
1882: if ($uhom ne 'no_host') {
1883: $byid{$uhom}{$id} .= $uname.',';
1884: }
1885: }
1886: }
1887: }
1888: if ($namespace eq 'clickers') {
1889: foreach my $server (keys(%byid)) {
1890: if (ref($byid{$server}) eq 'HASH') {
1891: foreach my $id (keys(%{$byid{$server}})) {
1892: $byid{$server}{$id} =~ s/,$//;
1893: $servers{$server}.=&escape($id).'='.&escape($byid{$server}{$id}).'&';
1894: }
1895: }
1896: }
1897: }
1898: foreach my $server (keys(%servers)) {
1899: $servers{$server} =~ s/\&$//;
1900: if ($namespace eq 'ids') {
1901: $result{$server} = &critical('iddel:'.$udom.':'.$servers{$server},$uhome);
1902: } elsif ($namespace eq 'clickers') {
1903: $result{$server} = &critical('updateclickers:'.$udom.':del:'.$servers{$server},$server);
1904: }
1905: }
1906: return %result;
1907: }
1908:
1909: # ----- Update clicker ID-to-username look-ups in clickers.db on library server
1910:
1911: sub updateclickers {
1912: my ($udom,$action,$idshashref,$uhome,$critical) = @_;
1913: my %clickers;
1914: if (ref($idshashref) eq 'HASH') {
1915: %clickers=%{$idshashref};
1916: } else {
1917: return;
1918: }
1919: my $items='';
1920: foreach my $item (keys(%clickers)) {
1921: $items.=&escape($item).'='.&escape($clickers{$item}).'&';
1922: }
1923: $items=~s/\&$//;
1924: my $request = "updateclickers:$udom:$action:$items";
1925: if ($critical) {
1926: return &critical($request,$uhome);
1927: } else {
1928: return &reply($request,$uhome);
1929: }
1930: }
1931:
1932: # ------------------------------dump from db file owned by domainconfig user
1933: sub dump_dom {
1934: my ($namespace, $udom, $regexp) = @_;
1935:
1936: $udom ||= $env{'user.domain'};
1937:
1938: return () unless $udom;
1939:
1940: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
1941: }
1942:
1943: # ------------------------------------------ get items from domain db files
1944:
1945: sub get_dom {
1946: my ($namespace,$storearr,$udom,$uhome)=@_;
1947: return if ($udom eq 'public');
1948: my $items='';
1949: foreach my $item (@$storearr) {
1950: $items.=&escape($item).'&';
1951: }
1952: $items=~s/\&$//;
1953: if (!$udom) {
1954: $udom=$env{'user.domain'};
1955: return if ($udom eq 'public');
1956: if (defined(&domain($udom,'primary'))) {
1957: $uhome=&domain($udom,'primary');
1958: } else {
1959: undef($uhome);
1960: }
1961: } else {
1962: if (!$uhome) {
1963: if (defined(&domain($udom,'primary'))) {
1964: $uhome=&domain($udom,'primary');
1965: }
1966: }
1967: }
1968: if ($udom && $uhome && ($uhome ne 'no_host')) {
1969: my $rep;
1970: if ($namespace =~ /^enc/) {
1971: $rep=&reply("encrypt:egetdom:$udom:$namespace:$items",$uhome);
1972: } else {
1973: $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1974: }
1975: my %returnhash;
1976: if ($rep eq '' || $rep =~ /^error: 2 /) {
1977: return %returnhash;
1978: }
1979: my @pairs=split(/\&/,$rep);
1980: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1981: return @pairs;
1982: }
1983: my $i=0;
1984: foreach my $item (@$storearr) {
1985: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1986: $i++;
1987: }
1988: return %returnhash;
1989: } else {
1990: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1991: }
1992: }
1993:
1994: # -------------------------------------------- put items in domain db files
1995:
1996: sub put_dom {
1997: my ($namespace,$storehash,$udom,$uhome)=@_;
1998: if (!$udom) {
1999: $udom=$env{'user.domain'};
2000: if (defined(&domain($udom,'primary'))) {
2001: $uhome=&domain($udom,'primary');
2002: } else {
2003: undef($uhome);
2004: }
2005: } else {
2006: if (!$uhome) {
2007: if (defined(&domain($udom,'primary'))) {
2008: $uhome=&domain($udom,'primary');
2009: }
2010: }
2011: }
2012: if ($udom && $uhome && ($uhome ne 'no_host')) {
2013: my $items='';
2014: foreach my $item (keys(%$storehash)) {
2015: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
2016: }
2017: $items=~s/\&$//;
2018: if ($namespace =~ /^enc/) {
2019: return &reply("encrypt:putdom:$udom:$namespace:$items",$uhome);
2020: } else {
2021: return &reply("putdom:$udom:$namespace:$items",$uhome);
2022: }
2023: } else {
2024: &logthis("put_dom failed - no homeserver and/or domain");
2025: }
2026: }
2027:
2028: # --------------------- newput for items in db file owned by domainconfig user
2029: sub newput_dom {
2030: my ($namespace,$storehash,$udom) = @_;
2031: my $result;
2032: if (!$udom) {
2033: $udom=$env{'user.domain'};
2034: }
2035: if ($udom) {
2036: my $uname = &get_domainconfiguser($udom);
2037: $result = &newput($namespace,$storehash,$udom,$uname);
2038: }
2039: return $result;
2040: }
2041:
2042: # --------------------- delete for items in db file owned by domainconfig user
2043: sub del_dom {
2044: my ($namespace,$storearr,$udom)=@_;
2045: if (ref($storearr) eq 'ARRAY') {
2046: if (!$udom) {
2047: $udom=$env{'user.domain'};
2048: }
2049: if ($udom) {
2050: my $uname = &get_domainconfiguser($udom);
2051: return &del($namespace,$storearr,$udom,$uname);
2052: }
2053: }
2054: }
2055:
2056: # ----------------------------------construct domainconfig user for a domain
2057: sub get_domainconfiguser {
2058: my ($udom) = @_;
2059: return $udom.'-domainconfig';
2060: }
2061:
2062: sub retrieve_inst_usertypes {
2063: my ($udom) = @_;
2064: my (%returnhash,@order);
2065: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
2066: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
2067: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
2068: return ($domdefs{'inststatustypes'},$domdefs{'inststatusorder'});
2069: } else {
2070: if (defined(&domain($udom,'primary'))) {
2071: my $uhome=&domain($udom,'primary');
2072: my $rep=&reply("inst_usertypes:$udom",$uhome);
2073: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
2074: &logthis("retrieve_inst_usertypes failed - $rep returned from $uhome in domain: $udom");
2075: return (\%returnhash,\@order);
2076: }
2077: my ($hashitems,$orderitems) = split(/:/,$rep);
2078: my @pairs=split(/\&/,$hashitems);
2079: foreach my $item (@pairs) {
2080: my ($key,$value)=split(/=/,$item,2);
2081: $key = &unescape($key);
2082: next if ($key =~ /^error: 2 /);
2083: $returnhash{$key}=&thaw_unescape($value);
2084: }
2085: my @esc_order = split(/\&/,$orderitems);
2086: foreach my $item (@esc_order) {
2087: push(@order,&unescape($item));
2088: }
2089: } else {
2090: &logthis("retrieve_inst_usertypes failed - no primary domain server for $udom");
2091: }
2092: return (\%returnhash,\@order);
2093: }
2094: }
2095:
2096: sub is_domainimage {
2097: my ($url) = @_;
2098: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+[^/]-) {
2099: if (&domain($1) ne '') {
2100: return '1';
2101: }
2102: }
2103: return;
2104: }
2105:
2106: sub inst_directory_query {
2107: my ($srch) = @_;
2108: my $udom = $srch->{'srchdomain'};
2109: my %results;
2110: my $homeserver = &domain($udom,'primary');
2111: my $outcome;
2112: if ($homeserver ne '') {
2113: unless ($homeserver eq $perlvar{'lonHostID'}) {
2114: if ($srch->{'srchby'} eq 'email') {
2115: my $lcrev = &get_server_loncaparev(undef,$homeserver);
2116: my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
2117: if (($major eq '' && $minor eq '') || ($major < 2) ||
2118: (($major == 2) && ($minor < 12))) {
2119: return;
2120: }
2121: }
2122: }
2123: my $queryid=&reply("querysend:instdirsearch:".
2124: &escape($srch->{'srchby'}).':'.
2125: &escape($srch->{'srchterm'}).':'.
2126: &escape($srch->{'srchtype'}),$homeserver);
2127: my $host=&hostname($homeserver);
2128: if ($queryid !~/^\Q$host\E\_/) {
2129: &logthis('institutional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.' in domain '.$udom);
2130: return;
2131: }
2132: my $response = &get_query_reply($queryid);
2133: my $maxtries = 5;
2134: my $tries = 1;
2135: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2136: $response = &get_query_reply($queryid);
2137: $tries ++;
2138: }
2139:
2140: if (!&error($response) && $response ne 'refused') {
2141: if ($response eq 'unavailable') {
2142: $outcome = $response;
2143: } else {
2144: $outcome = 'ok';
2145: my @matches = split(/\n/,$response);
2146: foreach my $match (@matches) {
2147: my ($key,$value) = split(/=/,$match);
2148: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
2149: }
2150: }
2151: }
2152: }
2153: return ($outcome,%results);
2154: }
2155:
2156: sub usersearch {
2157: my ($srch) = @_;
2158: my $dom = $srch->{'srchdomain'};
2159: my %results;
2160: my %libserv = &all_library();
2161: my $query = 'usersearch';
2162: foreach my $tryserver (keys(%libserv)) {
2163: if (&host_domain($tryserver) eq $dom) {
2164: unless ($tryserver eq $perlvar{'lonHostID'}) {
2165: if ($srch->{'srchby'} eq 'email') {
2166: my $lcrev = &get_server_loncaparev(undef,$tryserver);
2167: my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
2168: next if (($major eq '' && $minor eq '') || ($major < 2) ||
2169: (($major == 2) && ($minor < 12)));
2170: }
2171: }
2172: my $host=&hostname($tryserver);
2173: my $queryid=
2174: &reply("querysend:".&escape($query).':'.
2175: &escape($srch->{'srchby'}).':'.
2176: &escape($srch->{'srchtype'}).':'.
2177: &escape($srch->{'srchterm'}),$tryserver);
2178: if ($queryid !~/^\Q$host\E\_/) {
2179: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
2180: next;
2181: }
2182: my $reply = &get_query_reply($queryid);
2183: my $maxtries = 1;
2184: my $tries = 1;
2185: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
2186: $reply = &get_query_reply($queryid);
2187: $tries ++;
2188: }
2189: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
2190: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
2191: } else {
2192: my @matches;
2193: if ($reply =~ /\n/) {
2194: @matches = split(/\n/,$reply);
2195: } else {
2196: @matches = split(/\&/,$reply);
2197: }
2198: foreach my $match (@matches) {
2199: my ($uname,$udom,%userhash);
2200: foreach my $entry (split(/:/,$match)) {
2201: my ($key,$value) =
2202: map {&unescape($_);} split(/=/,$entry);
2203: $userhash{$key} = $value;
2204: if ($key eq 'username') {
2205: $uname = $value;
2206: } elsif ($key eq 'domain') {
2207: $udom = $value;
2208: }
2209: }
2210: $results{$uname.':'.$udom} = \%userhash;
2211: }
2212: }
2213: }
2214: }
2215: return %results;
2216: }
2217:
2218: sub get_instuser {
2219: my ($udom,$uname,$id) = @_;
2220: my $homeserver = &domain($udom,'primary');
2221: my ($outcome,%results);
2222: if ($homeserver ne '') {
2223: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
2224: &escape($id).':'.&escape($udom),$homeserver);
2225: my $host=&hostname($homeserver);
2226: if ($queryid !~/^\Q$host\E\_/) {
2227: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
2228: return;
2229: }
2230: my $response = &get_query_reply($queryid);
2231: my $maxtries = 5;
2232: my $tries = 1;
2233: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2234: $response = &get_query_reply($queryid);
2235: $tries ++;
2236: }
2237: if (!&error($response) && $response ne 'refused') {
2238: if ($response eq 'unavailable') {
2239: $outcome = $response;
2240: } else {
2241: $outcome = 'ok';
2242: my @matches = split(/\n/,$response);
2243: foreach my $match (@matches) {
2244: my ($key,$value) = split(/=/,$match);
2245: $results{&unescape($key)} = &thaw_unescape($value);
2246: }
2247: }
2248: }
2249: }
2250: my %userinfo;
2251: if (ref($results{$uname}) eq 'HASH') {
2252: %userinfo = %{$results{$uname}};
2253: }
2254: return ($outcome,%userinfo);
2255: }
2256:
2257: sub get_multiple_instusers {
2258: my ($udom,$users,$caller) = @_;
2259: my ($outcome,$results);
2260: if (ref($users) eq 'HASH') {
2261: my $count = keys(%{$users});
2262: my $requested = &freeze_escape($users);
2263: my $homeserver = &domain($udom,'primary');
2264: if ($homeserver ne '') {
2265: my $queryid=&reply('querysend:getmultinstusers:::'.$caller.'='.$requested,$homeserver);
2266: my $host=&hostname($homeserver);
2267: if ($queryid !~/^\Q$host\E\_/) {
2268: &logthis('get_multiple_instusers invalid queryid: '.$queryid.
2269: ' for host: '.$homeserver.'in domain '.$udom);
2270: return ($outcome,$results);
2271: }
2272: my $response = &get_query_reply($queryid);
2273: my $maxtries = 5;
2274: if ($count > 100) {
2275: $maxtries = 1+int($count/20);
2276: }
2277: my $tries = 1;
2278: while (($response=~/^timeout/) && ($tries <= $maxtries)) {
2279: $response = &get_query_reply($queryid);
2280: $tries ++;
2281: }
2282: if ($response eq '') {
2283: $results = {};
2284: foreach my $key (keys(%{$users})) {
2285: my ($uname,$id);
2286: if ($caller eq 'id') {
2287: $id = $key;
2288: } else {
2289: $uname = $key;
2290: }
2291: my ($resp,%info) = &get_instuser($udom,$uname,$id);
2292: $outcome = $resp;
2293: if ($resp eq 'ok') {
2294: %{$results} = (%{$results}, %info);
2295: } else {
2296: last;
2297: }
2298: }
2299: } elsif(!&error($response) && ($response ne 'refused')) {
2300: if (($response eq 'unavailable') || ($response eq 'invalid') || ($response eq 'timeout')) {
2301: $outcome = $response;
2302: } else {
2303: ($outcome,my $userdata) = split(/=/,$response,2);
2304: if ($outcome eq 'ok') {
2305: $results = &thaw_unescape($userdata);
2306: }
2307: }
2308: }
2309: }
2310: }
2311: return ($outcome,$results);
2312: }
2313:
2314: sub inst_rulecheck {
2315: my ($udom,$uname,$id,$item,$rules) = @_;
2316: my %returnhash;
2317: if ($udom ne '') {
2318: if (ref($rules) eq 'ARRAY') {
2319: @{$rules} = map {&escape($_);} (@{$rules});
2320: my $rulestr = join(':',@{$rules});
2321: my $homeserver=&domain($udom,'primary');
2322: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2323: my $response;
2324: if ($item eq 'username') {
2325: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
2326: ':'.&escape($uname).':'.$rulestr,
2327: $homeserver));
2328: } elsif ($item eq 'id') {
2329: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
2330: ':'.&escape($id).':'.$rulestr,
2331: $homeserver));
2332: } elsif ($item eq 'selfcreate') {
2333: $response=&unescape(&reply('instselfcreatecheck:'.
2334: &escape($udom).':'.&escape($uname).
2335: ':'.$rulestr,$homeserver));
2336: }
2337: if ($response ne 'refused') {
2338: my @pairs=split(/\&/,$response);
2339: foreach my $item (@pairs) {
2340: my ($key,$value)=split(/=/,$item,2);
2341: $key = &unescape($key);
2342: next if ($key =~ /^error: 2 /);
2343: $returnhash{$key}=&thaw_unescape($value);
2344: }
2345: }
2346: }
2347: }
2348: }
2349: return %returnhash;
2350: }
2351:
2352: sub inst_userrules {
2353: my ($udom,$check) = @_;
2354: my (%ruleshash,@ruleorder);
2355: if ($udom ne '') {
2356: my $homeserver=&domain($udom,'primary');
2357: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2358: my $response;
2359: if ($check eq 'id') {
2360: $response=&reply('instidrules:'.&escape($udom),
2361: $homeserver);
2362: } elsif ($check eq 'email') {
2363: $response=&reply('instemailrules:'.&escape($udom),
2364: $homeserver);
2365: } else {
2366: $response=&reply('instuserrules:'.&escape($udom),
2367: $homeserver);
2368: }
2369: if (($response ne 'refused') && ($response ne 'error') &&
2370: ($response ne 'unknown_cmd') &&
2371: ($response ne 'no_such_host')) {
2372: my ($hashitems,$orderitems) = split(/:/,$response);
2373: my @pairs=split(/\&/,$hashitems);
2374: foreach my $item (@pairs) {
2375: my ($key,$value)=split(/=/,$item,2);
2376: $key = &unescape($key);
2377: next if ($key =~ /^error: 2 /);
2378: $ruleshash{$key}=&thaw_unescape($value);
2379: }
2380: my @esc_order = split(/\&/,$orderitems);
2381: foreach my $item (@esc_order) {
2382: push(@ruleorder,&unescape($item));
2383: }
2384: }
2385: }
2386: }
2387: return (\%ruleshash,\@ruleorder);
2388: }
2389:
2390: # ------------- Get Authentication, Language and User Tools Defaults for Domain
2391:
2392: sub get_domain_defaults {
2393: my ($domain,$ignore_cache) = @_;
2394: return if (($domain eq '') || ($domain eq 'public'));
2395: my $cachetime = 60*60*24;
2396: unless ($ignore_cache) {
2397: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
2398: if (defined($cached)) {
2399: if (ref($result) eq 'HASH') {
2400: return %{$result};
2401: }
2402: }
2403: }
2404: my %domdefaults;
2405: my %domconfig =
2406: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
2407: 'requestcourses','inststatus',
2408: 'coursedefaults','usersessions',
2409: 'requestauthor','selfenrollment',
2410: 'coursecategories','ssl','autoenroll',
2411: 'trust','helpsettings'],$domain);
2412: my @coursetypes = ('official','unofficial','community','textbook','placement');
2413: if (ref($domconfig{'defaults'}) eq 'HASH') {
2414: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
2415: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
2416: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
2417: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
2418: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
2419: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
2420: $domdefaults{'intauth_cost'} = $domconfig{'defaults'}{'intauth_cost'};
2421: $domdefaults{'intauth_switch'} = $domconfig{'defaults'}{'intauth_switch'};
2422: $domdefaults{'intauth_check'} = $domconfig{'defaults'}{'intauth_check'};
2423: } else {
2424: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
2425: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
2426: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
2427: }
2428: if (ref($domconfig{'quotas'}) eq 'HASH') {
2429: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
2430: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
2431: } else {
2432: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
2433: }
2434: my @usertools = ('aboutme','blog','webdav','portfolio');
2435: foreach my $item (@usertools) {
2436: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
2437: $domdefaults{$item} = $domconfig{'quotas'}{$item};
2438: }
2439: }
2440: if (ref($domconfig{'quotas'}{'authorquota'}) eq 'HASH') {
2441: $domdefaults{'authorquota'} = $domconfig{'quotas'}{'authorquota'};
2442: }
2443: }
2444: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
2445: foreach my $item ('official','unofficial','community','textbook','placement') {
2446: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
2447: }
2448: }
2449: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
2450: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
2451: }
2452: if (ref($domconfig{'inststatus'}) eq 'HASH') {
2453: foreach my $item ('inststatustypes','inststatusorder','inststatusguest') {
2454: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2455: }
2456: }
2457: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2458: $domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
2459: $domdefaults{'usejsme'} = $domconfig{'coursedefaults'}{'usejsme'};
2460: $domdefaults{'uselcmath'} = $domconfig{'coursedefaults'}{'uselcmath'};
2461: if (ref($domconfig{'coursedefaults'}{'postsubmit'}) eq 'HASH') {
2462: $domdefaults{'postsubmit'} = $domconfig{'coursedefaults'}{'postsubmit'}{'client'};
2463: }
2464: foreach my $type (@coursetypes) {
2465: if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
2466: unless ($type eq 'community') {
2467: $domdefaults{$type.'credits'} = $domconfig{'coursedefaults'}{'coursecredits'}{$type};
2468: }
2469: }
2470: if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
2471: $domdefaults{$type.'quota'} = $domconfig{'coursedefaults'}{'uploadquota'}{$type};
2472: }
2473: if ($domdefaults{'postsubmit'} eq 'on') {
2474: if (ref($domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}) eq 'HASH') {
2475: $domdefaults{$type.'postsubtimeout'} =
2476: $domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}{$type};
2477: }
2478: }
2479: }
2480: if (ref($domconfig{'coursedefaults'}{'canclone'}) eq 'HASH') {
2481: if (ref($domconfig{'coursedefaults'}{'canclone'}{'instcode'}) eq 'ARRAY') {
2482: my @clonecodes = @{$domconfig{'coursedefaults'}{'canclone'}{'instcode'}};
2483: if (@clonecodes) {
2484: $domdefaults{'canclone'} = join('+',@clonecodes);
2485: }
2486: }
2487: } elsif ($domconfig{'coursedefaults'}{'canclone'}) {
2488: $domdefaults{'canclone'}=$domconfig{'coursedefaults'}{'canclone'};
2489: }
2490: if ($domconfig{'coursedefaults'}{'texengine'}) {
2491: $domdefaults{'texengine'} = $domconfig{'coursedefaults'}{'texengine'};
2492: }
2493: }
2494: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2495: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2496: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2497: }
2498: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2499: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2500: }
2501: if (ref($domconfig{'usersessions'}{'offloadnow'}) eq 'HASH') {
2502: $domdefaults{'offloadnow'} = $domconfig{'usersessions'}{'offloadnow'};
2503: }
2504: }
2505: if (ref($domconfig{'selfenrollment'}) eq 'HASH') {
2506: if (ref($domconfig{'selfenrollment'}{'admin'}) eq 'HASH') {
2507: my @settings = ('types','registered','enroll_dates','access_dates','section',
2508: 'approval','limit');
2509: foreach my $type (@coursetypes) {
2510: if (ref($domconfig{'selfenrollment'}{'admin'}{$type}) eq 'HASH') {
2511: my @mgrdc = ();
2512: foreach my $item (@settings) {
2513: if ($domconfig{'selfenrollment'}{'admin'}{$type}{$item} eq '0') {
2514: push(@mgrdc,$item);
2515: }
2516: }
2517: if (@mgrdc) {
2518: $domdefaults{$type.'selfenrolladmdc'} = join(',',@mgrdc);
2519: }
2520: }
2521: }
2522: }
2523: if (ref($domconfig{'selfenrollment'}{'default'}) eq 'HASH') {
2524: foreach my $type (@coursetypes) {
2525: if (ref($domconfig{'selfenrollment'}{'default'}{$type}) eq 'HASH') {
2526: foreach my $item (keys(%{$domconfig{'selfenrollment'}{'default'}{$type}})) {
2527: $domdefaults{$type.'selfenroll'.$item} = $domconfig{'selfenrollment'}{'default'}{$type}{$item};
2528: }
2529: }
2530: }
2531: }
2532: }
2533: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
2534: $domdefaults{'catauth'} = 'std';
2535: $domdefaults{'catunauth'} = 'std';
2536: if ($domconfig{'coursecategories'}{'auth'}) {
2537: $domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};
2538: }
2539: if ($domconfig{'coursecategories'}{'unauth'}) {
2540: $domdefaults{'catunauth'} = $domconfig{'coursecategories'}{'unauth'};
2541: }
2542: }
2543: if (ref($domconfig{'ssl'}) eq 'HASH') {
2544: if (ref($domconfig{'ssl'}{'replication'}) eq 'HASH') {
2545: $domdefaults{'replication'} = $domconfig{'ssl'}{'replication'};
2546: }
2547: if (ref($domconfig{'ssl'}{'connto'}) eq 'HASH') {
2548: $domdefaults{'connect'} = $domconfig{'ssl'}{'connto'};
2549: }
2550: if (ref($domconfig{'ssl'}{'connfrom'}) eq 'HASH') {
2551: $domdefaults{'connect'} = $domconfig{'ssl'}{'connfrom'};
2552: }
2553: }
2554: if (ref($domconfig{'trust'}) eq 'HASH') {
2555: my @prefixes = qw(content shared enroll othcoau coaurem domroles catalog reqcrs msg);
2556: foreach my $prefix (@prefixes) {
2557: if (ref($domconfig{'trust'}{$prefix}) eq 'HASH') {
2558: $domdefaults{'trust'.$prefix} = $domconfig{'trust'}{$prefix};
2559: }
2560: }
2561: }
2562: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
2563: $domdefaults{'autofailsafe'} = $domconfig{'autoenroll'}{'autofailsafe'};
2564: }
2565: if (ref($domconfig{'helpsettings'}) eq 'HASH') {
2566: $domdefaults{'submitbugs'} = $domconfig{'helpsettings'}{'submitbugs'};
2567: if (ref($domconfig{'helpsettings'}{'adhoc'}) eq 'HASH') {
2568: $domdefaults{'adhocroles'} = $domconfig{'helpsettings'}{'adhoc'};
2569: }
2570: }
2571: &do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
2572: return %domdefaults;
2573: }
2574:
2575: sub course_portal_url {
2576: my ($cnum,$cdom) = @_;
2577: my $chome = &homeserver($cnum,$cdom);
2578: my $hostname = &hostname($chome);
2579: my $protocol = $protocol{$chome};
2580: $protocol = 'http' if ($protocol ne 'https');
2581: my %domdefaults = &get_domain_defaults($cdom);
2582: my $firsturl;
2583: if ($domdefaults{'portal_def'}) {
2584: $firsturl = $domdefaults{'portal_def'};
2585: } else {
2586: $firsturl = $protocol.'://'.$hostname;
2587: }
2588: return $firsturl;
2589: }
2590:
2591: # --------------------------------------------------- Assign a key to a student
2592:
2593: sub assign_access_key {
2594: #
2595: # a valid key looks like uname:udom#comments
2596: # comments are being appended
2597: #
2598: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2599: $kdom=
2600: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2601: $knum=
2602: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2603: $cdom=
2604: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2605: $cnum=
2606: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2607: $udom=$env{'user.name'} unless (defined($udom));
2608: $uname=$env{'user.domain'} unless (defined($uname));
2609: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2610: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2611: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2612: # assigned to this person
2613: # - this should not happen,
2614: # unless something went wrong
2615: # the first time around
2616: # ready to assign
2617: $logentry=$1.'; '.$logentry;
2618: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2619: $kdom,$knum) eq 'ok') {
2620: # key now belongs to user
2621: my $envkey='key.'.$cdom.'_'.$cnum;
2622: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2623: &appenv({'environment.'.$envkey => $ckey});
2624: return 'ok';
2625: } else {
2626: return
2627: 'error: Count not permanently assign key, will need to be re-entered later.';
2628: }
2629: } else {
2630: return 'error: Could not assign key, try again later.';
2631: }
2632: } elsif (!$existing{$ckey}) {
2633: # the key does not exist
2634: return 'error: The key does not exist';
2635: } else {
2636: # the key is somebody else's
2637: return 'error: The key is already in use';
2638: }
2639: }
2640:
2641: # ------------------------------------------ put an additional comment on a key
2642:
2643: sub comment_access_key {
2644: #
2645: # a valid key looks like uname:udom#comments
2646: # comments are being appended
2647: #
2648: my ($ckey,$cdom,$cnum,$logentry)=@_;
2649: $cdom=
2650: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2651: $cnum=
2652: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2653: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2654: if ($existing{$ckey}) {
2655: $existing{$ckey}.='; '.$logentry;
2656: # ready to assign
2657: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2658: $cdom,$cnum) eq 'ok') {
2659: return 'ok';
2660: } else {
2661: return 'error: Count not store comment.';
2662: }
2663: } else {
2664: # the key does not exist
2665: return 'error: The key does not exist';
2666: }
2667: }
2668:
2669: # ------------------------------------------------------ Generate a set of keys
2670:
2671: sub generate_access_keys {
2672: my ($number,$cdom,$cnum,$logentry)=@_;
2673: $cdom=
2674: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2675: $cnum=
2676: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2677: unless (&allowed('mky',$cdom)) { return 0; }
2678: unless (($cdom) && ($cnum)) { return 0; }
2679: if ($number>10000) { return 0; }
2680: sleep(2); # make sure don't get same seed twice
2681: srand(time()^($$+($$<<15))); # from "Programming Perl"
2682: my $total=0;
2683: for (my $i=1;$i<=$number;$i++) {
2684: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2685: sprintf("%lx",int(100000*rand)).'-'.
2686: sprintf("%lx",int(100000*rand));
2687: $newkey=~s/1/g/g; # folks mix up 1 and l
2688: $newkey=~s/0/h/g; # and also 0 and O
2689: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2690: if ($existing{$newkey}) {
2691: $i--;
2692: } else {
2693: if (&put('accesskeys',
2694: { $newkey => '# generated '.localtime().
2695: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2696: '; '.$logentry },
2697: $cdom,$cnum) eq 'ok') {
2698: $total++;
2699: }
2700: }
2701: }
2702: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2703: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2704: return $total;
2705: }
2706:
2707: # ------------------------------------------------------- Validate an accesskey
2708:
2709: sub validate_access_key {
2710: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2711: $cdom=
2712: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2713: $cnum=
2714: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2715: $udom=$env{'user.domain'} unless (defined($udom));
2716: $uname=$env{'user.name'} unless (defined($uname));
2717: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2718: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2719: }
2720:
2721: # ------------------------------------- Find the section of student in a course
2722: sub devalidate_getsection_cache {
2723: my ($udom,$unam,$courseid)=@_;
2724: my $hashid="$udom:$unam:$courseid";
2725: &devalidate_cache_new('getsection',$hashid);
2726: }
2727:
2728: sub courseid_to_courseurl {
2729: my ($courseid) = @_;
2730: #already url style courseid
2731: return $courseid if ($courseid =~ m{^/});
2732:
2733: if (exists($env{'course.'.$courseid.'.num'})) {
2734: my $cnum = $env{'course.'.$courseid.'.num'};
2735: my $cdom = $env{'course.'.$courseid.'.domain'};
2736: return "/$cdom/$cnum";
2737: }
2738:
2739: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2740: if (exists($courseinfo{'num'})) {
2741: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2742: }
2743:
2744: return undef;
2745: }
2746:
2747: sub getsection {
2748: my ($udom,$unam,$courseid)=@_;
2749: my $cachetime=1800;
2750:
2751: my $hashid="$udom:$unam:$courseid";
2752: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2753: if (defined($cached)) { return $result; }
2754:
2755: my %Pending;
2756: my %Expired;
2757: #
2758: # Each role can either have not started yet (pending), be active,
2759: # or have expired.
2760: #
2761: # If there is an active role, we are done.
2762: #
2763: # If there is more than one role which has not started yet,
2764: # choose the one which will start sooner
2765: # If there is one role which has not started yet, return it.
2766: #
2767: # If there is more than one expired role, choose the one which ended last.
2768: # If there is a role which has expired, return it.
2769: #
2770: $courseid = &courseid_to_courseurl($courseid);
2771: my %roleshash = &dump('roles',$udom,$unam,$courseid);
2772: foreach my $key (keys(%roleshash)) {
2773: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2774: my $section=$1;
2775: if ($key eq $courseid.'_st') { $section=''; }
2776: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2777: my $now=time;
2778: if (defined($end) && $end && ($now > $end)) {
2779: $Expired{$end}=$section;
2780: next;
2781: }
2782: if (defined($start) && $start && ($now < $start)) {
2783: $Pending{$start}=$section;
2784: next;
2785: }
2786: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2787: }
2788: #
2789: # Presumedly there will be few matching roles from the above
2790: # loop and the sorting time will be negligible.
2791: if (scalar(keys(%Pending))) {
2792: my ($time) = sort {$a <=> $b} keys(%Pending);
2793: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2794: }
2795: if (scalar(keys(%Expired))) {
2796: my @sorted = sort {$a <=> $b} keys(%Expired);
2797: my $time = pop(@sorted);
2798: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2799: }
2800: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2801: }
2802:
2803: sub save_cache {
2804: &purge_remembered();
2805: #&Apache::loncommon::validate_page();
2806: undef(%env);
2807: undef($env_loaded);
2808: }
2809:
2810: my $to_remember=-1;
2811: my %remembered;
2812: my %accessed;
2813: my $kicks=0;
2814: my $hits=0;
2815: sub make_key {
2816: my ($name,$id) = @_;
2817: if (length($id) > 65
2818: && length(&escape($id)) > 200) {
2819: $id=length($id).':'.&Digest::MD5::md5_hex($id);
2820: }
2821: return &escape($name.':'.$id);
2822: }
2823:
2824: sub devalidate_cache_new {
2825: my ($name,$id,$debug) = @_;
2826: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
2827: my $remembered_id=$name.':'.$id;
2828: $id=&make_key($name,$id);
2829: $memcache->delete($id);
2830: delete($remembered{$remembered_id});
2831: delete($accessed{$remembered_id});
2832: }
2833:
2834: sub is_cached_new {
2835: my ($name,$id,$debug) = @_;
2836: my $remembered_id=$name.':'.$id; # this is to avoid make_key (which is slow) whenever possible
2837: if (exists($remembered{$remembered_id})) {
2838: if ($debug) { &Apache::lonnet::logthis("Early return $remembered_id of $remembered{$remembered_id} "); }
2839: $accessed{$remembered_id}=[&gettimeofday()];
2840: $hits++;
2841: return ($remembered{$remembered_id},1);
2842: }
2843: $id=&make_key($name,$id);
2844: my $value = $memcache->get($id);
2845: if (!(defined($value))) {
2846: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
2847: return (undef,undef);
2848: }
2849: if ($value eq '__undef__') {
2850: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
2851: $value=undef;
2852: }
2853: &make_room($remembered_id,$value,$debug);
2854: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
2855: return ($value,1);
2856: }
2857:
2858: sub do_cache_new {
2859: my ($name,$id,$value,$time,$debug) = @_;
2860: my $remembered_id=$name.':'.$id;
2861: $id=&make_key($name,$id);
2862: my $setvalue=$value;
2863: if (!defined($setvalue)) {
2864: $setvalue='__undef__';
2865: }
2866: if (!defined($time) ) {
2867: $time=600;
2868: }
2869: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
2870: my $result = $memcache->set($id,$setvalue,$time);
2871: if (! $result) {
2872: &logthis("caching of id -> $id failed");
2873: $memcache->disconnect_all();
2874: }
2875: # need to make a copy of $value
2876: &make_room($remembered_id,$value,$debug);
2877: return $value;
2878: }
2879:
2880: sub make_room {
2881: my ($remembered_id,$value,$debug)=@_;
2882:
2883: $remembered{$remembered_id}= (ref($value)) ? &Storable::dclone($value)
2884: : $value;
2885: if ($to_remember<0) { return; }
2886: $accessed{$remembered_id}=[&gettimeofday()];
2887: if (scalar(keys(%remembered)) <= $to_remember) { return; }
2888: my $to_kick;
2889: my $max_time=0;
2890: foreach my $other (keys(%accessed)) {
2891: if (&tv_interval($accessed{$other}) > $max_time) {
2892: $to_kick=$other;
2893: $max_time=&tv_interval($accessed{$other});
2894: }
2895: }
2896: delete($remembered{$to_kick});
2897: delete($accessed{$to_kick});
2898: $kicks++;
2899: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
2900: return;
2901: }
2902:
2903: sub purge_remembered {
2904: #&logthis("Tossing ".scalar(keys(%remembered)));
2905: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
2906: undef(%remembered);
2907: undef(%accessed);
2908: }
2909: # ------------------------------------- Read an entry from a user's environment
2910:
2911: sub userenvironment {
2912: my ($udom,$unam,@what)=@_;
2913: my $items;
2914: foreach my $item (@what) {
2915: $items.=&escape($item).'&';
2916: }
2917: $items=~s/\&$//;
2918: my %returnhash=();
2919: my $uhome = &homeserver($unam,$udom);
2920: unless ($uhome eq 'no_host') {
2921: my @answer=split(/\&/,
2922: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
2923: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
2924: return %returnhash;
2925: }
2926: my $i;
2927: for ($i=0;$i<=$#what;$i++) {
2928: $returnhash{$what[$i]}=&unescape($answer[$i]);
2929: }
2930: }
2931: return %returnhash;
2932: }
2933:
2934: # ---------------------------------------------------------- Get a studentphoto
2935: sub studentphoto {
2936: my ($udom,$unam,$ext) = @_;
2937: my $home=&Apache::lonnet::homeserver($unam,$udom);
2938: if (defined($env{'request.course.id'})) {
2939: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
2940: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
2941: return(&retrievestudentphoto($udom,$unam,$ext));
2942: } else {
2943: my ($result,$perm_reqd)=
2944: &Apache::lonnet::auto_photo_permission($unam,$udom);
2945: if ($result eq 'ok') {
2946: if (!($perm_reqd eq 'yes')) {
2947: return(&retrievestudentphoto($udom,$unam,$ext));
2948: }
2949: }
2950: }
2951: }
2952: } else {
2953: my ($result,$perm_reqd) =
2954: &Apache::lonnet::auto_photo_permission($unam,$udom);
2955: if ($result eq 'ok') {
2956: if (!($perm_reqd eq 'yes')) {
2957: return(&retrievestudentphoto($udom,$unam,$ext));
2958: }
2959: }
2960: }
2961: return '/adm/lonKaputt/lonlogo_broken.gif';
2962: }
2963:
2964: sub retrievestudentphoto {
2965: my ($udom,$unam,$ext,$type) = @_;
2966: my $home=&Apache::lonnet::homeserver($unam,$udom);
2967: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
2968: if ($ret eq 'ok') {
2969: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
2970: if ($type eq 'thumbnail') {
2971: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
2972: }
2973: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
2974: return $tokenurl;
2975: } else {
2976: if ($type eq 'thumbnail') {
2977: return '/adm/lonKaputt/genericstudent_tn.gif';
2978: } else {
2979: return '/adm/lonKaputt/lonlogo_broken.gif';
2980: }
2981: }
2982: }
2983:
2984: # -------------------------------------------------------------------- New chat
2985:
2986: sub chatsend {
2987: my ($newentry,$anon,$group)=@_;
2988: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2989: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2990: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
2991: &reply('chatsend:'.$cdom.':'.$cnum.':'.
2992: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
2993: &escape($newentry)).':'.$group,$chome);
2994: }
2995:
2996: # ------------------------------------------ Find current version of a resource
2997:
2998: sub getversion {
2999: my $fname=&clutter(shift);
3000: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
3001: return ¤tversion(&filelocation('',$fname));
3002: }
3003:
3004: sub currentversion {
3005: my $fname=shift;
3006: my $author=$fname;
3007: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3008: my ($udom,$uname)=split(/\//,$author);
3009: my $home=&homeserver($uname,$udom);
3010: if ($home eq 'no_host') {
3011: return -1;
3012: }
3013: my $answer=&reply("currentversion:$fname",$home);
3014: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3015: return -1;
3016: }
3017: return $answer;
3018: }
3019:
3020: #
3021: # Return special version number of resource if set by override, empty otherwise
3022: #
3023: sub usedversion {
3024: my $fname=shift;
3025: unless ($fname) { $fname=$env{'request.uri'}; }
3026: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
3027: if ($urlversion) { return $urlversion; }
3028: return '';
3029: }
3030:
3031: # ----------------------------- Subscribe to a resource, return URL if possible
3032:
3033: sub subscribe {
3034: my $fname=shift;
3035: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
3036: $fname=~s/[\n\r]//g;
3037: my $author=$fname;
3038: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3039: my ($udom,$uname)=split(/\//,$author);
3040: my $home=homeserver($uname,$udom);
3041: if ($home eq 'no_host') {
3042: return 'not_found';
3043: }
3044: my $answer=reply("sub:$fname",$home);
3045: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3046: $answer.=' by '.$home;
3047: }
3048: return $answer;
3049: }
3050:
3051: # -------------------------------------------------------------- Replicate file
3052:
3053: sub repcopy {
3054: my $filename=shift;
3055: $filename=~s/\/+/\//g;
3056: my $londocroot = $perlvar{'lonDocRoot'};
3057: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
3058: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
3059: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
3060: $filename=~m{^/*(uploaded|editupload)/}) {
3061: return &repcopy_userfile($filename);
3062: }
3063: $filename=~s/[\n\r]//g;
3064: my $transname="$filename.in.transfer";
3065: # FIXME: this should flock
3066: if ((-e $filename) || (-e $transname)) { return 'ok'; }
3067: my $remoteurl=subscribe($filename);
3068: if ($remoteurl =~ /^con_lost by/) {
3069: &logthis("Subscribe returned $remoteurl: $filename");
3070: return 'unavailable';
3071: } elsif ($remoteurl eq 'not_found') {
3072: #&logthis("Subscribe returned not_found: $filename");
3073: return 'not_found';
3074: } elsif ($remoteurl =~ /^rejected by/) {
3075: &logthis("Subscribe returned $remoteurl: $filename");
3076: return 'forbidden';
3077: } elsif ($remoteurl eq 'directory') {
3078: return 'ok';
3079: } else {
3080: my $author=$filename;
3081: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3082: my ($udom,$uname)=split(/\//,$author);
3083: my $home=homeserver($uname,$udom);
3084: unless ($home eq $perlvar{'lonHostID'}) {
3085: my @parts=split(/\//,$filename);
3086: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
3087: if ($path ne "$londocroot/res") {
3088: &logthis("Malconfiguration for replication: $filename");
3089: return 'bad_request';
3090: }
3091: my $count;
3092: for ($count=5;$count<$#parts;$count++) {
3093: $path.="/$parts[$count]";
3094: if ((-e $path)!=1) {
3095: mkdir($path,0777);
3096: }
3097: }
3098: my $request=new HTTP::Request('GET',"$remoteurl");
3099: my $response;
3100: if ($remoteurl =~ m{/raw/}) {
3101: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',0,1);
3102: } else {
3103: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',1);
3104: }
3105: if ($response->is_error()) {
3106: unlink($transname);
3107: my $message=$response->status_line;
3108: &logthis("<font color=\"blue\">WARNING:"
3109: ." LWP get: $message: $filename</font>");
3110: return 'unavailable';
3111: } else {
3112: if ($remoteurl!~/\.meta$/) {
3113: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
3114: my $mresponse;
3115: if ($remoteurl =~ m{/raw/}) {
3116: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',0,1);
3117: } else {
3118: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',1);
3119: }
3120: if ($mresponse->is_error()) {
3121: unlink($filename.'.meta');
3122: &logthis(
3123: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
3124: }
3125: }
3126: rename($transname,$filename);
3127: return 'ok';
3128: }
3129: }
3130: }
3131: }
3132:
3133: # ------------------------------------------------ Get server side include body
3134: sub ssi_body {
3135: my ($filelink,%form)=@_;
3136: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
3137: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
3138: }
3139: my $output='';
3140: my $response;
3141: if ($filelink=~/^https?\:/) {
3142: ($output,$response)=&externalssi($filelink);
3143: } else {
3144: $filelink .= $filelink=~/\?/ ? '&' : '?';
3145: $filelink .= 'inhibitmenu=yes';
3146: ($output,$response)=&ssi($filelink,%form);
3147: }
3148: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
3149: $output=~s/^.*?\<body[^\>]*\>//si;
3150: $output=~s/\<\/body\s*\>.*?$//si;
3151: if (wantarray) {
3152: return ($output, $response);
3153: } else {
3154: return $output;
3155: }
3156: }
3157:
3158: # --------------------------------------------------------- Server Side Include
3159:
3160: sub absolute_url {
3161: my ($host_name) = @_;
3162: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
3163: if ($host_name eq '') {
3164: $host_name = $ENV{'SERVER_NAME'};
3165: }
3166: return $protocol.$host_name;
3167: }
3168:
3169: #
3170: # Server side include.
3171: # Parameters:
3172: # fn Possibly encrypted resource name/id.
3173: # form Hash that describes how the rendering should be done
3174: # and other things.
3175: # Returns:
3176: # Scalar context: The content of the response.
3177: # Array context: 2 element list of the content and the full response object.
3178: #
3179: sub ssi {
3180:
3181: my ($fn,%form)=@_;
3182: my $request;
3183:
3184: $form{'no_update_last_known'}=1;
3185: &Apache::lonenc::check_encrypt(\$fn);
3186: if (%form) {
3187: $request=new HTTP::Request('POST',&absolute_url().$fn);
3188: $request->content(join('&',map {
3189: my $name = escape($_);
3190: "$name=" . ( ref($form{$_}) eq 'ARRAY'
3191: ? join("&$name=", map {escape($_) } @{$form{$_}})
3192: : &escape($form{$_}) );
3193: } keys(%form)));
3194: } else {
3195: $request=new HTTP::Request('GET',&absolute_url().$fn);
3196: }
3197:
3198: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
3199: my $lonhost = $perlvar{'lonHostID'};
3200: my $islocal;
3201: if (($env{'request.course.id'}) &&
3202: ($form{'grade_courseid'} eq $env{'request.course.id'}) &&
3203: ($form{'grade_username'} ne '') && ($form{'grade_domain'} ne '') &&
3204: ($form{'grade_symb'} ne '') &&
3205: (&Apache::lonnet::allowed('mgr',$env{'request.course.id'}.
3206: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:'')))) {
3207: $islocal = 1;
3208: }
3209: my $response= &LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,
3210: '','','',$islocal);
3211:
3212: if (wantarray) {
3213: return ($response->content, $response);
3214: } else {
3215: return $response->content;
3216: }
3217: }
3218:
3219: sub externalssi {
3220: my ($url)=@_;
3221: my $request=new HTTP::Request('GET',$url);
3222: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar);
3223: if (wantarray) {
3224: return ($response->content, $response);
3225: } else {
3226: return $response->content;
3227: }
3228: }
3229:
3230:
3231: # If the local copy of a replicated resource is outdated, trigger a
3232: # connection from the homeserver to flush the delayed queue. If no update
3233: # happens, remove local copies of outdated resource (and corresponding
3234: # metadata file).
3235:
3236: sub remove_stale_resfile {
3237: my ($url) = @_;
3238: my $removed;
3239: if ($url=~m{^/res/($match_domain)/($match_username)/}) {
3240: my $audom = $1;
3241: my $auname = $2;
3242: unless (($url =~ /\.\d+\.\w+$/) || ($url =~ m{^/res/lib/templates/})) {
3243: my $homeserver = &homeserver($auname,$audom);
3244: unless (($homeserver eq 'no_host') ||
3245: (grep { $_ eq $homeserver } ¤t_machine_ids())) {
3246: my $fname = &filelocation('',$url);
3247: if (-e $fname) {
3248: my $protocol = $protocol{$homeserver};
3249: $protocol = 'http' if ($protocol ne 'https');
3250: my $hostname = &hostname($homeserver);
3251: if ($hostname) {
3252: my $uri = &declutter($url);
3253: my $request=new HTTP::Request('HEAD',$protocol.'://'.$hostname.'/raw/'.$uri);
3254: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,5,0,1);
3255: if ($response->is_success()) {
3256: my $remmodtime = &HTTP::Date::str2time( $response->header('Last-modified') );
3257: my $locmodtime = (stat($fname))[9];
3258: if ($locmodtime < $remmodtime) {
3259: my $stale;
3260: my $answer = &reply('pong',$homeserver);
3261: if ($answer eq $homeserver.':'.$perlvar{'lonHostID'}) {
3262: sleep(0.2);
3263: $locmodtime = (stat($fname))[9];
3264: if ($locmodtime < $remmodtime) {
3265: my $posstransfer = $fname.'.in.transfer';
3266: if ((-e $posstransfer) && ($remmodtime < (stat($posstransfer))[9])) {
3267: $removed = 1;
3268: } else {
3269: $stale = 1;
3270: }
3271: } else {
3272: $removed = 1;
3273: }
3274: } else {
3275: $stale = 1;
3276: }
3277: if ($stale) {
3278: unlink($fname);
3279: if ($uri!~/\.meta$/) {
3280: unlink($fname.'.meta');
3281: }
3282: &reply("unsub:$fname",$homeserver);
3283: $removed = 1;
3284: }
3285: }
3286: }
3287: }
3288: }
3289: }
3290: }
3291: }
3292: return $removed;
3293: }
3294:
3295: # -------------------------------- Allow a /uploaded/ URI to be vouched for
3296:
3297: sub allowuploaded {
3298: my ($srcurl,$url)=@_;
3299: $url=&clutter(&declutter($url));
3300: my $dir=$url;
3301: $dir=~s/\/[^\/]+$//;
3302: my %httpref=();
3303: my $httpurl=&hreflocation('',$url);
3304: $httpref{'httpref.'.$httpurl}=$srcurl;
3305: &Apache::lonnet::appenv(\%httpref);
3306: }
3307:
3308: #
3309: # Determine if the current user should be able to edit a particular resource,
3310: # when viewing in course context.
3311: # (a) When viewing resource used to determine if "Edit" item is included in
3312: # Functions.
3313: # (b) When displaying folder contents in course editor, used to determine if
3314: # "Edit" link will be displayed alongside resource.
3315: #
3316: # input: six args -- filename (decluttered), course number, course domain,
3317: # url, symb (if registered) and group (if this is a group
3318: # item -- e.g., bulletin board, group page etc.).
3319: # output: array of five scalars --
3320: # $cfile -- url for file editing if editable on current server
3321: # $home -- homeserver of resource (i.e., for author if published,
3322: # or course if uploaded.).
3323: # $switchserver -- 1 if server switch will be needed.
3324: # $forceedit -- 1 if icon/link should be to go to edit mode
3325: # $forceview -- 1 if icon/link should be to go to view mode
3326: #
3327:
3328: sub can_edit_resource {
3329: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
3330: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
3331: #
3332: # For aboutme pages user can only edit his/her own.
3333: #
3334: if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
3335: my ($sdom,$sname) = ($1,$2);
3336: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
3337: $home = $env{'user.home'};
3338: $cfile = $resurl;
3339: if ($env{'form.forceedit'}) {
3340: $forceview = 1;
3341: } else {
3342: $forceedit = 1;
3343: }
3344: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3345: } else {
3346: return;
3347: }
3348: }
3349:
3350: if ($env{'request.course.id'}) {
3351: my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
3352: if ($group ne '') {
3353: # if this is a group homepage or group bulletin board, check group privs
3354: my $allowed = 0;
3355: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
3356: if ((&allowed('mdg',$env{'request.course.id'}.
3357: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3358: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3359: $allowed = 1;
3360: }
3361: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
3362: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3363: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3364: $allowed = 1;
3365: }
3366: }
3367: if ($allowed) {
3368: $home=&homeserver($cnum,$cdom);
3369: if ($env{'form.forceedit'}) {
3370: $forceview = 1;
3371: } else {
3372: $forceedit = 1;
3373: }
3374: $cfile = $resurl;
3375: } else {
3376: return;
3377: }
3378: } else {
3379: if ($resurl =~ m{^/?adm/viewclasslist$}) {
3380: unless (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
3381: return;
3382: }
3383: } elsif (!$crsedit) {
3384: #
3385: # No edit allowed where CC has switched to student role.
3386: #
3387: return;
3388: }
3389: }
3390: }
3391:
3392: if ($file ne '') {
3393: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
3394: if (&is_course_upload($file,$cnum,$cdom)) {
3395: $uploaded = 1;
3396: $incourse = 1;
3397: if ($file =~/\.(htm|html|css|js|txt)$/) {
3398: $cfile = &hreflocation('',$file);
3399: if ($env{'form.forceedit'}) {
3400: $forceview = 1;
3401: } else {
3402: $forceedit = 1;
3403: }
3404: }
3405: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
3406: $incourse = 1;
3407: if ($env{'form.forceedit'}) {
3408: $forceview = 1;
3409: } else {
3410: $forceedit = 1;
3411: }
3412: $cfile = $resurl;
3413: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
3414: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
3415: $incourse = 1;
3416: if ($env{'form.forceedit'}) {
3417: $forceview = 1;
3418: } else {
3419: $forceedit = 1;
3420: }
3421: $cfile = $resurl;
3422: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem') {
3423: $incourse = 1;
3424: $cfile = $resurl.'/smpedit';
3425: } elsif ($resurl =~ m{^/adm/wrapper/ext/}) {
3426: $incourse = 1;
3427: if ($env{'form.forceedit'}) {
3428: $forceview = 1;
3429: } else {
3430: $forceedit = 1;
3431: }
3432: $cfile = $resurl;
3433: } elsif ($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3434: $incourse = 1;
3435: if ($env{'form.forceedit'}) {
3436: $forceview = 1;
3437: } else {
3438: $forceedit = 1;
3439: }
3440: $cfile = $resurl;
3441: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3442: $incourse = 1;
3443: if ($env{'form.forceedit'}) {
3444: $forceview = 1;
3445: } else {
3446: $forceedit = 1;
3447: }
3448: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3449: }
3450: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
3451: my $template = '/res/lib/templates/simpleproblem.problem';
3452: if (&is_on_map($template)) {
3453: $incourse = 1;
3454: $forceview = 1;
3455: $cfile = $template;
3456: }
3457: } elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3458: $incourse = 1;
3459: if ($env{'form.forceedit'}) {
3460: $forceview = 1;
3461: } else {
3462: $forceedit = 1;
3463: }
3464: $cfile = $resurl;
3465: } elsif (($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3466: $incourse = 1;
3467: if ($env{'form.forceedit'}) {
3468: $forceview = 1;
3469: } else {
3470: $forceedit = 1;
3471: }
3472: $cfile = $resurl;
3473: } elsif (($resurl eq '/adm/extresedit') && ($symb || $env{'form.folderpath'})) {
3474: $incourse = 1;
3475: $forceview = 1;
3476: if ($symb) {
3477: my ($map,$id,$res)=&decode_symb($symb);
3478: $env{'request.symb'} = $symb;
3479: $cfile = &clutter($res);
3480: } else {
3481: $cfile = $env{'form.suppurl'};
3482: my $escfile = &unescape($cfile);
3483: if ($escfile =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3484: $cfile = '/adm/wrapper'.$escfile;
3485: } else {
3486: $escfile =~ s{^http://}{};
3487: $cfile = &escape("/adm/wrapper/ext/$escfile");
3488: }
3489: }
3490: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3491: if ($env{'form.forceedit'}) {
3492: $forceview = 1;
3493: } else {
3494: $forceedit = 1;
3495: }
3496: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3497: }
3498: }
3499: if ($uploaded || $incourse) {
3500: $home=&homeserver($cnum,$cdom);
3501: } elsif ($file !~ m{/$}) {
3502: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
3503: $file=~s{^($match_domain/$match_username)}{/priv/$1};
3504: # Check that the user has permission to edit this resource
3505: my $setpriv = 1;
3506: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
3507: if (defined($cfudom)) {
3508: $home=&homeserver($cfuname,$cfudom);
3509: $cfile=$file;
3510: }
3511: }
3512: if (($cfile ne '') && (!$incourse || $uploaded) &&
3513: (($home ne '') && ($home ne 'no_host'))) {
3514: my @ids=¤t_machine_ids();
3515: unless (grep(/^\Q$home\E$/,@ids)) {
3516: $switchserver=1;
3517: }
3518: }
3519: }
3520: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3521: }
3522:
3523: sub is_course_upload {
3524: my ($file,$cnum,$cdom) = @_;
3525: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
3526: $uploadpath =~ s{^\/}{};
3527: if (($file =~ m{^\Q$uploadpath\E/userfiles/(docs|supplemental)/}) ||
3528: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/})) {
3529: return 1;
3530: }
3531: return;
3532: }
3533:
3534: sub in_course {
3535: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
3536: if ($hideprivileged) {
3537: my $skipuser;
3538: my %coursehash = &coursedescription($cdom.'_'.$cnum);
3539: my @possdoms = ($cdom);
3540: if ($coursehash{'checkforpriv'}) {
3541: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
3542: }
3543: if (&privileged($uname,$udom,\@possdoms)) {
3544: $skipuser = 1;
3545: if ($coursehash{'nothideprivileged'}) {
3546: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3547: my $user;
3548: if ($item =~ /:/) {
3549: $user = $item;
3550: } else {
3551: $user = join(':',split(/[\@]/,$item));
3552: }
3553: if ($user eq $uname.':'.$udom) {
3554: undef($skipuser);
3555: last;
3556: }
3557: }
3558: }
3559: if ($skipuser) {
3560: return 0;
3561: }
3562: }
3563: }
3564: $type ||= 'any';
3565: if (!defined($cdom) || !defined($cnum)) {
3566: my $cid = $env{'request.course.id'};
3567: $cdom = $env{'course.'.$cid.'.domain'};
3568: $cnum = $env{'course.'.$cid.'.num'};
3569: }
3570: my $typesref;
3571: if (($type eq 'any') || ($type eq 'all')) {
3572: $typesref = ['active','previous','future'];
3573: } elsif ($type eq 'previous' || $type eq 'future') {
3574: $typesref = [$type];
3575: }
3576: my %roles = &get_my_roles($uname,$udom,'userroles',
3577: $typesref,undef,[$cdom]);
3578: my ($tmp) = keys(%roles);
3579: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
3580: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
3581: if (@course_roles > 0) {
3582: return 1;
3583: }
3584: return 0;
3585: }
3586:
3587: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
3588: # input: action, courseID, current domain, intended
3589: # path to file, source of file, instruction to parse file for objects,
3590: # ref to hash for embedded objects,
3591: # ref to hash for codebase of java objects.
3592: # reference to scalar to accommodate mime type determined
3593: # from File::MMagic if $parser = parse.
3594: #
3595: # output: url to file (if action was uploaddoc),
3596: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
3597: #
3598: # Allows directory structure to be used within lonUsers/../userfiles/ for a
3599: # course.
3600: #
3601: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3602: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
3603: # course's home server.
3604: #
3605: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
3606: # be copied from $source (current location) to
3607: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3608: # and will then be copied to
3609: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
3610: # course's home server.
3611: #
3612: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3613: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
3614: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3615: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
3616: # in course's home server.
3617: #
3618:
3619: sub process_coursefile {
3620: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
3621: $mimetype)=@_;
3622: my $fetchresult;
3623: my $home=&homeserver($docuname,$docudom);
3624: if ($action eq 'propagate') {
3625: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3626: $home);
3627: } else {
3628: my $fpath = '';
3629: my $fname = $file;
3630: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3631: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3632: my $filepath = &build_filepath($fpath);
3633: if ($action eq 'copy') {
3634: if ($source eq '') {
3635: $fetchresult = 'no source file';
3636: return $fetchresult;
3637: } else {
3638: my $destination = $filepath.'/'.$fname;
3639: rename($source,$destination);
3640: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3641: $home);
3642: }
3643: } elsif ($action eq 'uploaddoc') {
3644: open(my $fh,'>',$filepath.'/'.$fname);
3645: print $fh $env{'form.'.$source};
3646: close($fh);
3647: if ($parser eq 'parse') {
3648: my $mm = new File::MMagic;
3649: my $type = $mm->checktype_filename($filepath.'/'.$fname);
3650: if ($type eq 'text/html') {
3651: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
3652: unless ($parse_result eq 'ok') {
3653: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
3654: }
3655: }
3656: if (ref($mimetype)) {
3657: $$mimetype = $type;
3658: }
3659: }
3660: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3661: $home);
3662: if ($fetchresult eq 'ok') {
3663: return '/uploaded/'.$fpath.'/'.$fname;
3664: } else {
3665: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3666: ' to host '.$home.': '.$fetchresult);
3667: return '/adm/notfound.html';
3668: }
3669: }
3670: }
3671: unless ( $fetchresult eq 'ok') {
3672: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3673: ' to host '.$home.': '.$fetchresult);
3674: }
3675: return $fetchresult;
3676: }
3677:
3678: sub build_filepath {
3679: my ($fpath) = @_;
3680: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
3681: unless ($fpath eq '') {
3682: my @parts=split('/',$fpath);
3683: foreach my $part (@parts) {
3684: $filepath.= '/'.$part;
3685: if ((-e $filepath)!=1) {
3686: mkdir($filepath,0777);
3687: }
3688: }
3689: }
3690: return $filepath;
3691: }
3692:
3693: sub store_edited_file {
3694: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
3695: my $file = $primary_url;
3696: $file =~ s#^/uploaded/$docudom/$docuname/##;
3697: my $fpath = '';
3698: my $fname = $file;
3699: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3700: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3701: my $filepath = &build_filepath($fpath);
3702: open(my $fh,'>',$filepath.'/'.$fname);
3703: print $fh $content;
3704: close($fh);
3705: my $home=&homeserver($docuname,$docudom);
3706: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3707: $home);
3708: if ($$fetchresult eq 'ok') {
3709: return '/uploaded/'.$fpath.'/'.$fname;
3710: } else {
3711: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3712: ' to host '.$home.': '.$$fetchresult);
3713: return '/adm/notfound.html';
3714: }
3715: }
3716:
3717: sub clean_filename {
3718: my ($fname,$args)=@_;
3719: # Replace Windows backslashes by forward slashes
3720: $fname=~s/\\/\//g;
3721: if (!$args->{'keep_path'}) {
3722: # Get rid of everything but the actual filename
3723: $fname=~s/^.*\/([^\/]+)$/$1/;
3724: }
3725: # Replace spaces by underscores
3726: $fname=~s/\s+/\_/g;
3727: # Replace all other weird characters by nothing
3728: $fname=~s{[^/\w\.\-]}{}g;
3729: # Replace all .\d. sequences with _\d. so they no longer look like version
3730: # numbers
3731: $fname=~s/\.(\d+)(?=\.)/_$1/g;
3732: return $fname;
3733: }
3734: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
3735: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
3736: # image with the same aspect ratio as the original, but with dimensions which do
3737: # not exceed $resizewidth and $resizeheight.
3738:
3739: sub resizeImage {
3740: my ($img_path,$resizewidth,$resizeheight) = @_;
3741: my $ima = Image::Magick->new;
3742: my $resized;
3743: if (-e $img_path) {
3744: $ima->Read($img_path);
3745: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
3746: my $width = $ima->Get('width');
3747: my $height = $ima->Get('height');
3748: if ($width > $resizewidth) {
3749: my $factor = $width/$resizewidth;
3750: my $newheight = $height/$factor;
3751: $ima->Scale(width=>$resizewidth,height=>$newheight);
3752: $resized = 1;
3753: }
3754: }
3755: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
3756: my $width = $ima->Get('width');
3757: my $height = $ima->Get('height');
3758: if ($height > $resizeheight) {
3759: my $factor = $height/$resizeheight;
3760: my $newwidth = $width/$factor;
3761: $ima->Scale(width=>$newwidth,height=>$resizeheight);
3762: $resized = 1;
3763: }
3764: }
3765: if ($resized) {
3766: $ima->Write($img_path);
3767: }
3768: }
3769: return;
3770: }
3771:
3772: # --------------- Take an uploaded file and put it into the userfiles directory
3773: # input: $formname - the contents of the file are in $env{"form.$formname"}
3774: # the desired filename is in $env{"form.$formname.filename"}
3775: # $context - possible values: coursedoc, existingfile, overwrite,
3776: # canceloverwrite, or ''.
3777: # if 'coursedoc': upload to the current course
3778: # if 'existingfile': write file to tmp/overwrites directory
3779: # if 'canceloverwrite': delete file written to tmp/overwrites directory
3780: # $context is passed as argument to &finishuserfileupload
3781: # $subdir - directory in userfile to store the file into
3782: # $parser - instruction to parse file for objects ($parser = parse)
3783: # $allfiles - reference to hash for embedded objects
3784: # $codebase - reference to hash for codebase of java objects
3785: # $desuname - username for permanent storage of uploaded file
3786: # $dsetudom - domain for permanaent storage of uploaded file
3787: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
3788: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
3789: # $resizewidth - width (pixels) to which to resize uploaded image
3790: # $resizeheight - height (pixels) to which to resize uploaded image
3791: # $mimetype - reference to scalar to accommodate mime type determined
3792: # from File::MMagic.
3793: #
3794: # output: url of file in userspace, or error: <message>
3795: # or /adm/notfound.html if failure to upload occurse
3796:
3797: sub userfileupload {
3798: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
3799: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
3800: if (!defined($subdir)) { $subdir='unknown'; }
3801: my $fname=$env{'form.'.$formname.'.filename'};
3802: $fname=&clean_filename($fname);
3803: # See if there is anything left
3804: unless ($fname) { return 'error: no uploaded file'; }
3805: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
3806: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
3807: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
3808: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3809: my $now = time;
3810: my $filepath;
3811: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
3812: $filepath = 'tmp/helprequests/'.$now;
3813: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
3814: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
3815: '_'.$env{'user.domain'}.'/pending';
3816: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3817: my ($docuname,$docudom);
3818: if ($destudom =~ /^$match_domain$/) {
3819: $docudom = $destudom;
3820: } else {
3821: $docudom = $env{'user.domain'};
3822: }
3823: if ($destuname =~ /^$match_username$/) {
3824: $docuname = $destuname;
3825: } else {
3826: $docuname = $env{'user.name'};
3827: }
3828: if (exists($env{'form.group'})) {
3829: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3830: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3831: }
3832: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
3833: if ($context eq 'canceloverwrite') {
3834: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
3835: if (-e $tempfile) {
3836: my @info = stat($tempfile);
3837: if ($info[9] eq $env{'form.timestamp'}) {
3838: unlink($tempfile);
3839: }
3840: }
3841: return;
3842: }
3843: }
3844: # Create the directory if not present
3845: my @parts=split(/\//,$filepath);
3846: my $fullpath = $perlvar{'lonDaemons'};
3847: for (my $i=0;$i<@parts;$i++) {
3848: $fullpath .= '/'.$parts[$i];
3849: if ((-e $fullpath)!=1) {
3850: mkdir($fullpath,0777);
3851: }
3852: }
3853: open(my $fh,'>',$fullpath.'/'.$fname);
3854: print $fh $env{'form.'.$formname};
3855: close($fh);
3856: if ($context eq 'existingfile') {
3857: my @info = stat($fullpath.'/'.$fname);
3858: return ($fullpath.'/'.$fname,$info[9]);
3859: } else {
3860: return $fullpath.'/'.$fname;
3861: }
3862: }
3863: if ($subdir eq 'scantron') {
3864: $fname = 'scantron_orig_'.$fname;
3865: } else {
3866: $fname="$subdir/$fname";
3867: }
3868: if ($context eq 'coursedoc') {
3869: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3870: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3871: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
3872: return &finishuserfileupload($docuname,$docudom,
3873: $formname,$fname,$parser,$allfiles,
3874: $codebase,$thumbwidth,$thumbheight,
3875: $resizewidth,$resizeheight,$context,$mimetype);
3876: } else {
3877: if ($env{'form.folder'}) {
3878: $fname=$env{'form.folder'}.'/'.$fname;
3879: }
3880: return &process_coursefile('uploaddoc',$docuname,$docudom,
3881: $fname,$formname,$parser,
3882: $allfiles,$codebase,$mimetype);
3883: }
3884: } elsif (defined($destuname)) {
3885: my $docuname=$destuname;
3886: my $docudom=$destudom;
3887: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3888: $parser,$allfiles,$codebase,
3889: $thumbwidth,$thumbheight,
3890: $resizewidth,$resizeheight,$context,$mimetype);
3891: } else {
3892: my $docuname=$env{'user.name'};
3893: my $docudom=$env{'user.domain'};
3894: if ((exists($env{'form.group'})) || ($context eq 'syllabus')) {
3895: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3896: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3897: }
3898: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3899: $parser,$allfiles,$codebase,
3900: $thumbwidth,$thumbheight,
3901: $resizewidth,$resizeheight,$context,$mimetype);
3902: }
3903: }
3904:
3905: sub finishuserfileupload {
3906: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
3907: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
3908: my $path=$docudom.'/'.$docuname.'/';
3909: my $filepath=$perlvar{'lonDocRoot'};
3910:
3911: my ($fnamepath,$file,$fetchthumb);
3912: $file=$fname;
3913: if ($fname=~m|/|) {
3914: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
3915: $path.=$fnamepath.'/';
3916: }
3917: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
3918: my $count;
3919: for ($count=4;$count<=$#parts;$count++) {
3920: $filepath.="/$parts[$count]";
3921: if ((-e $filepath)!=1) {
3922: mkdir($filepath,0777);
3923: }
3924: }
3925:
3926: # Save the file
3927: {
3928: if (!open(FH,'>',$filepath.'/'.$file)) {
3929: &logthis('Failed to create '.$filepath.'/'.$file);
3930: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
3931: return '/adm/notfound.html';
3932: }
3933: if ($context eq 'overwrite') {
3934: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
3935: my $target = $filepath.'/'.$file;
3936: if (-e $source) {
3937: my @info = stat($source);
3938: if ($info[9] eq $env{'form.timestamp'}) {
3939: unless (&File::Copy::move($source,$target)) {
3940: &logthis('Failed to overwrite '.$filepath.'/'.$file);
3941: return "Moving from $source failed";
3942: }
3943: } else {
3944: return "Temporary file: $source had unexpected date/time for last modification";
3945: }
3946: } else {
3947: return "Temporary file: $source missing";
3948: }
3949: } elsif (!print FH ($env{'form.'.$formname})) {
3950: &logthis('Failed to write to '.$filepath.'/'.$file);
3951: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
3952: return '/adm/notfound.html';
3953: }
3954: close(FH);
3955: if ($resizewidth && $resizeheight) {
3956: my $mm = new File::MMagic;
3957: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
3958: if ($mime_type =~ m{^image/}) {
3959: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
3960: }
3961: }
3962: }
3963: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
3964: if (ref($mimetype)) {
3965: if ($$mimetype eq '') {
3966: my $mm = new File::MMagic;
3967: my $type = $mm->checktype_filename($filepath.'/'.$file);
3968: $$mimetype = $type;
3969: }
3970: }
3971: }
3972: if ($parser eq 'parse') {
3973: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
3974: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
3975: $allfiles,$codebase);
3976: unless ($parse_result eq 'ok') {
3977: &logthis('Failed to parse '.$filepath.$file.
3978: ' for embedded media: '.$parse_result);
3979: }
3980: }
3981: }
3982: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
3983: my $input = $filepath.'/'.$file;
3984: my $output = $filepath.'/'.'tn-'.$file;
3985: my $thumbsize = $thumbwidth.'x'.$thumbheight;
3986: my @args = ('convert','-sample',$thumbsize,$input,$output);
3987: system({$args[0]} @args);
3988: if (-e $filepath.'/'.'tn-'.$file) {
3989: $fetchthumb = 1;
3990: }
3991: }
3992:
3993: # Notify homeserver to grep it
3994: #
3995: my $docuhome=&homeserver($docuname,$docudom);
3996: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
3997: if ($fetchresult eq 'ok') {
3998: if ($fetchthumb) {
3999: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
4000: if ($thumbresult ne 'ok') {
4001: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
4002: $docuhome.': '.$thumbresult);
4003: }
4004: }
4005: #
4006: # Return the URL to it
4007: return '/uploaded/'.$path.$file;
4008: } else {
4009: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
4010: ': '.$fetchresult);
4011: return '/adm/notfound.html';
4012: }
4013: }
4014:
4015: sub extract_embedded_items {
4016: my ($fullpath,$allfiles,$codebase,$content) = @_;
4017: my @state = ();
4018: my (%lastids,%related,%shockwave,%flashvars);
4019: my %javafiles = (
4020: codebase => '',
4021: code => '',
4022: archive => ''
4023: );
4024: my %mediafiles = (
4025: src => '',
4026: movie => '',
4027: );
4028: my $p;
4029: if ($content) {
4030: $p = HTML::LCParser->new($content);
4031: } else {
4032: $p = HTML::LCParser->new($fullpath);
4033: }
4034: while (my $t=$p->get_token()) {
4035: if ($t->[0] eq 'S') {
4036: my ($tagname, $attr) = ($t->[1],$t->[2]);
4037: push(@state, $tagname);
4038: if (lc($tagname) eq 'allow') {
4039: &add_filetype($allfiles,$attr->{'src'},'src');
4040: }
4041: if (lc($tagname) eq 'img') {
4042: &add_filetype($allfiles,$attr->{'src'},'src');
4043: }
4044: if (lc($tagname) eq 'a') {
4045: unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) {
4046: &add_filetype($allfiles,$attr->{'href'},'href');
4047: }
4048: }
4049: if (lc($tagname) eq 'script') {
4050: my $src;
4051: if ($attr->{'archive'} =~ /\.jar$/i) {
4052: &add_filetype($allfiles,$attr->{'archive'},'archive');
4053: } else {
4054: if ($attr->{'src'} ne '') {
4055: $src = $attr->{'src'};
4056: &add_filetype($allfiles,$src,'src');
4057: }
4058: }
4059: my $text = $p->get_trimmed_text();
4060: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
4061: my @swfargs = split(/,/,$1);
4062: foreach my $item (@swfargs) {
4063: $item =~ s/["']//g;
4064: $item =~ s/^\s+//;
4065: $item =~ s/\s+$//;
4066: }
4067: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
4068: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
4069: push(@{$related{$swfargs[0]}},$swfargs[2]);
4070: } else {
4071: $related{$swfargs[0]} = [$swfargs[2]];
4072: }
4073: }
4074: }
4075: }
4076: if (lc($tagname) eq 'link') {
4077: if (lc($attr->{'rel'}) eq 'stylesheet') {
4078: &add_filetype($allfiles,$attr->{'href'},'href');
4079: }
4080: }
4081: if (lc($tagname) eq 'object' ||
4082: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
4083: foreach my $item (keys(%javafiles)) {
4084: $javafiles{$item} = '';
4085: }
4086: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
4087: $lastids{lc($tagname)} = $attr->{'id'};
4088: }
4089: }
4090: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
4091: my $name = lc($attr->{'name'});
4092: foreach my $item (keys(%javafiles)) {
4093: if ($name eq $item) {
4094: $javafiles{$item} = $attr->{'value'};
4095: last;
4096: }
4097: }
4098: my $pathfrom;
4099: foreach my $item (keys(%mediafiles)) {
4100: if ($name eq $item) {
4101: $pathfrom = $attr->{'value'};
4102: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
4103: &add_filetype($allfiles,$pathfrom,$name);
4104: last;
4105: }
4106: }
4107: if ($name eq 'flashvars') {
4108: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
4109: }
4110: if ($pathfrom ne '') {
4111: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
4112: $pathfrom);
4113: }
4114: }
4115: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
4116: foreach my $item (keys(%javafiles)) {
4117: if ($attr->{$item}) {
4118: $javafiles{$item} = $attr->{$item};
4119: last;
4120: }
4121: }
4122: foreach my $item (keys(%mediafiles)) {
4123: if ($attr->{$item}) {
4124: &add_filetype($allfiles,$attr->{$item},$item);
4125: last;
4126: }
4127: }
4128: if (lc($tagname) eq 'embed') {
4129: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
4130: &embedded_dependency($allfiles,\%related,$attr->{'name'},
4131: $attr->{'src'});
4132: }
4133: }
4134: }
4135: if (lc($tagname) eq 'iframe') {
4136: my $src = $attr->{'src'} ;
4137: if (($src ne '') && ($src !~ m{^(/|https?://)})) {
4138: &add_filetype($allfiles,$src,'src');
4139: } elsif ($src =~ m{^/}) {
4140: if ($env{'request.course.id'}) {
4141: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4142: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4143: my $url = &hreflocation('',$fullpath);
4144: if ($url =~ m{^/uploaded/$cdom/$cnum/docs/(\w+/\d+)/}) {
4145: my $relpath = $1;
4146: if ($src =~ m{^/uploaded/$cdom/$cnum/docs/\Q$relpath\E/(.+)$}) {
4147: &add_filetype($allfiles,$1,'src');
4148: }
4149: }
4150: }
4151: }
4152: }
4153: if ($t->[4] =~ m{/>$}) {
4154: pop(@state);
4155: }
4156: } elsif ($t->[0] eq 'E') {
4157: my ($tagname) = ($t->[1]);
4158: if ($javafiles{'codebase'} ne '') {
4159: $javafiles{'codebase'} .= '/';
4160: }
4161: if (lc($tagname) eq 'applet' ||
4162: lc($tagname) eq 'object' ||
4163: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
4164: ) {
4165: foreach my $item (keys(%javafiles)) {
4166: if ($item ne 'codebase' && $javafiles{$item} ne '') {
4167: my $file=$javafiles{'codebase'}.$javafiles{$item};
4168: &add_filetype($allfiles,$file,$item);
4169: }
4170: }
4171: }
4172: pop @state;
4173: }
4174: }
4175: foreach my $id (sort(keys(%flashvars))) {
4176: if ($shockwave{$id} ne '') {
4177: my @pairs = split(/\&/,$flashvars{$id});
4178: foreach my $pair (@pairs) {
4179: my ($key,$value) = split(/\=/,$pair);
4180: if ($key eq 'thumb') {
4181: &add_filetype($allfiles,$value,$key);
4182: } elsif ($key eq 'content') {
4183: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
4184: my ($ext) = ($value =~ /\.([^.]+)$/);
4185: if ($ext ne '') {
4186: &add_filetype($allfiles,$path.$value,$ext);
4187: }
4188: }
4189: }
4190: }
4191: }
4192: return 'ok';
4193: }
4194:
4195: sub add_filetype {
4196: my ($allfiles,$file,$type)=@_;
4197: if (exists($allfiles->{$file})) {
4198: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
4199: push(@{$allfiles->{$file}}, &escape($type));
4200: }
4201: } else {
4202: @{$allfiles->{$file}} = (&escape($type));
4203: }
4204: }
4205:
4206: sub embedded_dependency {
4207: my ($allfiles,$related,$identifier,$pathfrom) = @_;
4208: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
4209: if (($identifier ne '') &&
4210: (ref($related->{$identifier}) eq 'ARRAY') &&
4211: ($pathfrom ne '')) {
4212: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
4213: foreach my $dep (@{$related->{$identifier}}) {
4214: &add_filetype($allfiles,$path.$dep,'object');
4215: }
4216: }
4217: }
4218: return;
4219: }
4220:
4221: sub removeuploadedurl {
4222: my ($url)=@_;
4223: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
4224: return &removeuserfile($uname,$udom,$fname);
4225: }
4226:
4227: sub removeuserfile {
4228: my ($docuname,$docudom,$fname)=@_;
4229: my $home=&homeserver($docuname,$docudom);
4230: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
4231: if ($result eq 'ok') {
4232: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
4233: my $metafile = $fname.'.meta';
4234: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
4235: my $url = "/uploaded/$docudom/$docuname/$fname";
4236: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
4237: my $sqlresult =
4238: &update_portfolio_table($docuname,$docudom,$file,
4239: 'portfolio_metadata',$group,
4240: 'delete');
4241: }
4242: }
4243: return $result;
4244: }
4245:
4246: sub mkdiruserfile {
4247: my ($docuname,$docudom,$dir)=@_;
4248: my $home=&homeserver($docuname,$docudom);
4249: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
4250: }
4251:
4252: sub renameuserfile {
4253: my ($docuname,$docudom,$old,$new)=@_;
4254: my $home=&homeserver($docuname,$docudom);
4255: my $result = &reply("renameuserfile:$docudom:$docuname:".
4256: &escape("$old").':'.&escape("$new"),$home);
4257: if ($result eq 'ok') {
4258: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
4259: my $oldmeta = $old.'.meta';
4260: my $newmeta = $new.'.meta';
4261: my $metaresult =
4262: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
4263: my $url = "/uploaded/$docudom/$docuname/$old";
4264: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
4265: my $sqlresult =
4266: &update_portfolio_table($docuname,$docudom,$file,
4267: 'portfolio_metadata',$group,
4268: 'delete');
4269: }
4270: }
4271: return $result;
4272: }
4273:
4274: # ------------------------------------------------------------------------- Log
4275:
4276: sub log {
4277: my ($dom,$nam,$hom,$what)=@_;
4278: return critical("log:$dom:$nam:$what",$hom);
4279: }
4280:
4281: # ------------------------------------------------------------------ Course Log
4282: #
4283: # This routine flushes several buffers of non-mission-critical nature
4284: #
4285:
4286: sub flushcourselogs {
4287: &logthis('Flushing log buffers');
4288: #
4289: # course logs
4290: # This is a log of all transactions in a course, which can be used
4291: # for data mining purposes
4292: #
4293: # It also collects the courseid database, which lists last transaction
4294: # times and course titles for all courseids
4295: #
4296: my %courseidbuffer=();
4297: foreach my $crsid (keys(%courselogs)) {
4298: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
4299: &escape($courselogs{$crsid}),
4300: $coursehombuf{$crsid}) eq 'ok') {
4301: delete $courselogs{$crsid};
4302: } else {
4303: &logthis('Failed to flush log buffer for '.$crsid);
4304: if (length($courselogs{$crsid})>40000) {
4305: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
4306: " exceeded maximum size, deleting.</font>");
4307: delete $courselogs{$crsid};
4308: }
4309: }
4310: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
4311: 'description' => $coursedescrbuf{$crsid},
4312: 'inst_code' => $courseinstcodebuf{$crsid},
4313: 'type' => $coursetypebuf{$crsid},
4314: 'owner' => $courseownerbuf{$crsid},
4315: };
4316: }
4317: #
4318: # Write course id database (reverse lookup) to homeserver of courses
4319: # Is used in pickcourse
4320: #
4321: foreach my $crs_home (keys(%courseidbuffer)) {
4322: my $response = &courseidput(&host_domain($crs_home),
4323: $courseidbuffer{$crs_home},
4324: $crs_home,'timeonly');
4325: }
4326: #
4327: # File accesses
4328: # Writes to the dynamic metadata of resources to get hit counts, etc.
4329: #
4330: foreach my $entry (keys(%accesshash)) {
4331: if ($entry =~ /___count$/) {
4332: my ($dom,$name);
4333: ($dom,$name,undef)=
4334: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
4335: if (! defined($dom) || $dom eq '' ||
4336: ! defined($name) || $name eq '') {
4337: my $cid = $env{'request.course.id'};
4338: $dom = $env{'request.'.$cid.'.domain'};
4339: $name = $env{'request.'.$cid.'.num'};
4340: }
4341: my $value = $accesshash{$entry};
4342: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
4343: my %temphash=($url => $value);
4344: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
4345: if ($result eq 'ok') {
4346: delete $accesshash{$entry};
4347: }
4348: } else {
4349: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
4350: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
4351: my %temphash=($entry => $accesshash{$entry});
4352: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
4353: delete $accesshash{$entry};
4354: }
4355: }
4356: }
4357: #
4358: # Roles
4359: # Reverse lookup of user roles for course faculty/staff and co-authorship
4360: #
4361: foreach my $entry (keys(%userrolehash)) {
4362: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
4363: split(/\:/,$entry);
4364: if (&Apache::lonnet::put('nohist_userroles',
4365: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
4366: $rudom,$runame) eq 'ok') {
4367: delete $userrolehash{$entry};
4368: }
4369: }
4370: #
4371: # Reverse lookup of domain roles (dc, ad, li, sc, dh, da, au)
4372: #
4373: my %domrolebuffer = ();
4374: foreach my $entry (keys(%domainrolehash)) {
4375: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
4376: if ($domrolebuffer{$rudom}) {
4377: $domrolebuffer{$rudom}.='&'.&escape($entry).
4378: '='.&escape($domainrolehash{$entry});
4379: } else {
4380: $domrolebuffer{$rudom}.=&escape($entry).
4381: '='.&escape($domainrolehash{$entry});
4382: }
4383: delete $domainrolehash{$entry};
4384: }
4385: foreach my $dom (keys(%domrolebuffer)) {
4386: my %servers;
4387: if (defined(&domain($dom,'primary'))) {
4388: my $primary=&domain($dom,'primary');
4389: my $hostname=&hostname($primary);
4390: $servers{$primary} = $hostname;
4391: } else {
4392: %servers = &get_servers($dom,'library');
4393: }
4394: foreach my $tryserver (keys(%servers)) {
4395: if (&reply('domroleput:'.$dom.':'.
4396: $domrolebuffer{$dom},$tryserver) eq 'ok') {
4397: last;
4398: } else {
4399: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
4400: }
4401: }
4402: }
4403: $dumpcount++;
4404: }
4405:
4406: sub courselog {
4407: my $what=shift;
4408: $what=time.':'.$what;
4409: unless ($env{'request.course.id'}) { return ''; }
4410: $coursedombuf{$env{'request.course.id'}}=
4411: $env{'course.'.$env{'request.course.id'}.'.domain'};
4412: $coursenumbuf{$env{'request.course.id'}}=
4413: $env{'course.'.$env{'request.course.id'}.'.num'};
4414: $coursehombuf{$env{'request.course.id'}}=
4415: $env{'course.'.$env{'request.course.id'}.'.home'};
4416: $coursedescrbuf{$env{'request.course.id'}}=
4417: $env{'course.'.$env{'request.course.id'}.'.description'};
4418: $courseinstcodebuf{$env{'request.course.id'}}=
4419: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
4420: $courseownerbuf{$env{'request.course.id'}}=
4421: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
4422: $coursetypebuf{$env{'request.course.id'}}=
4423: $env{'course.'.$env{'request.course.id'}.'.type'};
4424: if (defined $courselogs{$env{'request.course.id'}}) {
4425: $courselogs{$env{'request.course.id'}}.='&'.$what;
4426: } else {
4427: $courselogs{$env{'request.course.id'}}.=$what;
4428: }
4429: if (length($courselogs{$env{'request.course.id'}})>4048) {
4430: &flushcourselogs();
4431: }
4432: }
4433:
4434: sub courseacclog {
4435: my $fnsymb=shift;
4436: unless ($env{'request.course.id'}) { return ''; }
4437: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
4438: if ($fnsymb=~/$LONCAPA::assess_re/) {
4439: $what.=':POST';
4440: # FIXME: Probably ought to escape things....
4441: foreach my $key (keys(%env)) {
4442: if ($key=~/^form\.(.*)/) {
4443: my $formitem = $1;
4444: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
4445: $what.=':'.$formitem.'='.$env{$key};
4446: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
4447: $what.=':'.$formitem.'='.$env{$key};
4448: }
4449: }
4450: }
4451: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
4452: # FIXME: We should not be depending on a form parameter that someone
4453: # editing lonsearchcat.pm might change in the future.
4454: if ($env{'form.phase'} eq 'course_search') {
4455: $what.= ':POST';
4456: # FIXME: Probably ought to escape things....
4457: foreach my $element ('courseexp','crsfulltext','crsrelated',
4458: 'crsdiscuss') {
4459: $what.=':'.$element.'='.$env{'form.'.$element};
4460: }
4461: }
4462: }
4463: &courselog($what);
4464: }
4465:
4466: sub countacc {
4467: my $url=&declutter(shift);
4468: return if (! defined($url) || $url eq '');
4469: unless ($env{'request.course.id'}) { return ''; }
4470: #
4471: # Mark that this url was used in this course
4472: #
4473: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
4474: #
4475: # Increase the access count for this resource in this child process
4476: #
4477: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
4478: $accesshash{$key}++;
4479: }
4480:
4481: sub linklog {
4482: my ($from,$to)=@_;
4483: $from=&declutter($from);
4484: $to=&declutter($to);
4485: $accesshash{$from.'___'.$to.'___comefrom'}=1;
4486: $accesshash{$to.'___'.$from.'___goto'}=1;
4487: }
4488:
4489: sub statslog {
4490: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
4491: if ($users<2) { return; }
4492: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
4493: 'course' => $env{'request.course.id'},
4494: 'sections' => '"all"',
4495: 'num_students' => $users,
4496: 'part' => $part,
4497: 'symb' => $symb,
4498: 'mean_tries' => $av_attempts,
4499: 'deg_of_diff' => $degdiff});
4500: foreach my $key (keys(%dynstore)) {
4501: $accesshash{$key}=$dynstore{$key};
4502: }
4503: }
4504:
4505: sub userrolelog {
4506: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
4507: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
4508: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
4509: $userrolehash
4510: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
4511: =$tend.':'.$tstart;
4512: }
4513: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
4514: $userrolehash
4515: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
4516: =$tend.':'.$tstart;
4517: }
4518: if ($trole =~ /^(dc|ad|li|au|dg|sc|dh|da)/ ) {
4519: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
4520: $domainrolehash
4521: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
4522: = $tend.':'.$tstart;
4523: }
4524: }
4525:
4526: sub courserolelog {
4527: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
4528: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
4529: my $cdom = $1;
4530: my $cnum = $2;
4531: my $sec = $3;
4532: my $namespace = 'rolelog';
4533: my %storehash = (
4534: role => $trole,
4535: start => $tstart,
4536: end => $tend,
4537: selfenroll => $selfenroll,
4538: context => $context,
4539: );
4540: if ($trole eq 'gr') {
4541: $namespace = 'groupslog';
4542: $storehash{'group'} = $sec;
4543: } else {
4544: $storehash{'section'} = $sec;
4545: }
4546: &write_log('course',$namespace,\%storehash,$delflag,$username,
4547: $domain,$cnum,$cdom);
4548: if (($trole ne 'st') || ($sec ne '')) {
4549: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
4550: }
4551: }
4552: return;
4553: }
4554:
4555: sub domainrolelog {
4556: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
4557: if ($area =~ m{^/($match_domain)/$}) {
4558: my $cdom = $1;
4559: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
4560: my $namespace = 'rolelog';
4561: my %storehash = (
4562: role => $trole,
4563: start => $tstart,
4564: end => $tend,
4565: context => $context,
4566: );
4567: &write_log('domain',$namespace,\%storehash,$delflag,$username,
4568: $domain,$domconfiguser,$cdom);
4569: }
4570: return;
4571:
4572: }
4573:
4574: sub coauthorrolelog {
4575: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
4576: if ($area =~ m{^/($match_domain)/($match_username)$}) {
4577: my $audom = $1;
4578: my $auname = $2;
4579: my $namespace = 'rolelog';
4580: my %storehash = (
4581: role => $trole,
4582: start => $tstart,
4583: end => $tend,
4584: context => $context,
4585: );
4586: &write_log('author',$namespace,\%storehash,$delflag,$username,
4587: $domain,$auname,$audom);
4588: }
4589: return;
4590: }
4591:
4592: sub get_course_adv_roles {
4593: my ($cid,$codes) = @_;
4594: $cid=$env{'request.course.id'} unless (defined($cid));
4595: my %coursehash=&coursedescription($cid);
4596: my $crstype = &Apache::loncommon::course_type($cid);
4597: my %nothide=();
4598: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4599: if ($user !~ /:/) {
4600: $nothide{join(':',split(/[\@]/,$user))}=1;
4601: } else {
4602: $nothide{$user}=1;
4603: }
4604: }
4605: my @possdoms = ($coursehash{'domain'});
4606: if ($coursehash{'checkforpriv'}) {
4607: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
4608: }
4609: my %returnhash=();
4610: my %dumphash=
4611: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
4612: my $now=time;
4613: my %privileged;
4614: foreach my $entry (keys(%dumphash)) {
4615: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4616: if (($tstart) && ($tstart<0)) { next; }
4617: if (($tend) && ($tend<$now)) { next; }
4618: if (($tstart) && ($now<$tstart)) { next; }
4619: my ($role,$username,$domain,$section)=split(/\:/,$entry);
4620: if ($username eq '' || $domain eq '') { next; }
4621: if ((&privileged($username,$domain,\@possdoms)) &&
4622: (!$nothide{$username.':'.$domain})) { next; }
4623: if ($role eq 'cr') { next; }
4624: if ($codes) {
4625: if ($section) { $role .= ':'.$section; }
4626: if ($returnhash{$role}) {
4627: $returnhash{$role}.=','.$username.':'.$domain;
4628: } else {
4629: $returnhash{$role}=$username.':'.$domain;
4630: }
4631: } else {
4632: my $key=&plaintext($role,$crstype);
4633: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
4634: if ($returnhash{$key}) {
4635: $returnhash{$key}.=','.$username.':'.$domain;
4636: } else {
4637: $returnhash{$key}=$username.':'.$domain;
4638: }
4639: }
4640: }
4641: return %returnhash;
4642: }
4643:
4644: sub get_my_roles {
4645: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
4646: unless (defined($uname)) { $uname=$env{'user.name'}; }
4647: unless (defined($udom)) { $udom=$env{'user.domain'}; }
4648: my (%dumphash,%nothide);
4649: if ($context eq 'userroles') {
4650: %dumphash = &dump('roles',$udom,$uname);
4651: } else {
4652: %dumphash = &dump('nohist_userroles',$udom,$uname);
4653: if ($hidepriv) {
4654: my %coursehash=&coursedescription($udom.'_'.$uname);
4655: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4656: if ($user !~ /:/) {
4657: $nothide{join(':',split(/[\@]/,$user))} = 1;
4658: } else {
4659: $nothide{$user} = 1;
4660: }
4661: }
4662: }
4663: }
4664: my %returnhash=();
4665: my $now=time;
4666: my %privileged;
4667: foreach my $entry (keys(%dumphash)) {
4668: my ($role,$tend,$tstart);
4669: if ($context eq 'userroles') {
4670: next if ($entry =~ /^rolesdef/);
4671: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
4672: } else {
4673: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4674: }
4675: if (($tstart) && ($tstart<0)) { next; }
4676: my $status = 'active';
4677: if (($tend) && ($tend<=$now)) {
4678: $status = 'previous';
4679: }
4680: if (($tstart) && ($now<$tstart)) {
4681: $status = 'future';
4682: }
4683: if (ref($types) eq 'ARRAY') {
4684: if (!grep(/^\Q$status\E$/,@{$types})) {
4685: next;
4686: }
4687: } else {
4688: if ($status ne 'active') {
4689: next;
4690: }
4691: }
4692: my ($rolecode,$username,$domain,$section,$area);
4693: if ($context eq 'userroles') {
4694: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
4695: (undef,$domain,$username,$section) = split(/\//,$area);
4696: } else {
4697: ($role,$username,$domain,$section) = split(/\:/,$entry);
4698: }
4699: if (ref($roledoms) eq 'ARRAY') {
4700: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
4701: next;
4702: }
4703: }
4704: if (ref($roles) eq 'ARRAY') {
4705: if (!grep(/^\Q$role\E$/,@{$roles})) {
4706: if ($role =~ /^cr\//) {
4707: if (!grep(/^cr$/,@{$roles})) {
4708: next;
4709: }
4710: } elsif ($role =~ /^gr\//) {
4711: if (!grep(/^gr$/,@{$roles})) {
4712: next;
4713: }
4714: } else {
4715: next;
4716: }
4717: }
4718: }
4719: if ($hidepriv) {
4720: my @privroles = ('dc','su');
4721: if ($context eq 'userroles') {
4722: next if (grep(/^\Q$role\E$/,@privroles));
4723: } else {
4724: my $possdoms = [$domain];
4725: if (ref($roledoms) eq 'ARRAY') {
4726: push(@{$possdoms},@{$roledoms});
4727: }
4728: if (&privileged($username,$domain,$possdoms,\@privroles)) {
4729: if (!$nothide{$username.':'.$domain}) {
4730: next;
4731: }
4732: }
4733: }
4734: }
4735: if ($withsec) {
4736: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
4737: $tstart.':'.$tend;
4738: } else {
4739: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
4740: }
4741: }
4742: return %returnhash;
4743: }
4744:
4745: sub get_all_adhocroles {
4746: my ($dom) = @_;
4747: my @roles_by_num = ();
4748: my %domdefaults = &get_domain_defaults($dom);
4749: my (%description,%access_in_dom,%access_info);
4750: if (ref($domdefaults{'adhocroles'}) eq 'HASH') {
4751: my $count = 0;
4752: my %domcurrent = %{$domdefaults{'adhocroles'}};
4753: my %ordered;
4754: foreach my $role (sort(keys(%domcurrent))) {
4755: my ($order,$desc,$access_in_dom);
4756: if (ref($domcurrent{$role}) eq 'HASH') {
4757: $order = $domcurrent{$role}{'order'};
4758: $desc = $domcurrent{$role}{'desc'};
4759: $access_in_dom{$role} = $domcurrent{$role}{'access'};
4760: $access_info{$role} = $domcurrent{$role}{$access_in_dom{$role}};
4761: }
4762: if ($order eq '') {
4763: $order = $count;
4764: }
4765: $ordered{$order} = $role;
4766: if ($desc ne '') {
4767: $description{$role} = $desc;
4768: } else {
4769: $description{$role}= $role;
4770: }
4771: $count++;
4772: }
4773: foreach my $item (sort {$a <=> $b } (keys(%ordered))) {
4774: push(@roles_by_num,$ordered{$item});
4775: }
4776: }
4777: return (\@roles_by_num,\%description,\%access_in_dom,\%access_info);
4778: }
4779:
4780: sub get_my_adhocroles {
4781: my ($cid,$checkreg) = @_;
4782: my ($cdom,$cnum,%info,@possroles,$description,$roles_by_num);
4783: if ($env{'request.course.id'} eq $cid) {
4784: $cdom = $env{'course.'.$cid.'.domain'};
4785: $cnum = $env{'course.'.$cid.'.num'};
4786: $info{'internal.coursecode'} = $env{'course.'.$cid.'.internal.coursecode'};
4787: } elsif ($cid =~ /^($match_domain)_($match_courseid)$/) {
4788: $cdom = $1;
4789: $cnum = $2;
4790: %info = &Apache::lonnet::get('environment',['internal.coursecode'],
4791: $cdom,$cnum);
4792: }
4793: if (($info{'internal.coursecode'} ne '') && ($checkreg)) {
4794: my $user = $env{'user.name'}.':'.$env{'user.domain'};
4795: my %rosterhash = &get('classlist',[$user],$cdom,$cnum);
4796: if ($rosterhash{$user} ne '') {
4797: my $type = (split(/:/,$rosterhash{$user}))[5];
4798: return ([],{}) if ($type eq 'auto');
4799: }
4800: }
4801: if (($cdom ne '') && ($cnum ne '')) {
4802: if (($env{"user.role.dh./$cdom/"}) || ($env{"user.role.da./$cdom/"})) {
4803: my $then=$env{'user.login.time'};
4804: my $update=$env{'user.update.time'};
4805: if (!$update) {
4806: $update = $then;
4807: }
4808: my @liveroles;
4809: foreach my $role ('dh','da') {
4810: if ($env{"user.role.$role./$cdom/"}) {
4811: my ($tstart,$tend)=split(/\./,$env{"user.role.$role./$cdom/"});
4812: my $limit = $update;
4813: if ($env{'request.role'} eq "$role./$cdom/") {
4814: $limit = $then;
4815: }
4816: my $activerole = 1;
4817: if ($tstart && $tstart>$limit) { $activerole = 0; }
4818: if ($tend && $tend <$limit) { $activerole = 0; }
4819: if ($activerole) {
4820: push(@liveroles,$role);
4821: }
4822: }
4823: }
4824: if (@liveroles) {
4825: if (&homeserver($cnum,$cdom) ne 'no_host') {
4826: my ($accessref,$accessinfo,%access_in_dom);
4827: ($roles_by_num,$description,$accessref,$accessinfo) = &get_all_adhocroles($cdom);
4828: if (ref($roles_by_num) eq 'ARRAY') {
4829: if (@{$roles_by_num}) {
4830: my %settings;
4831: if ($env{'request.course.id'} eq $cid) {
4832: foreach my $envkey (keys(%env)) {
4833: if ($envkey =~ /^\Qcourse.$cid.\E(internal\.adhoc.+)$/) {
4834: $settings{$1} = $env{$envkey};
4835: }
4836: }
4837: } else {
4838: %settings = &dump('environment',$cdom,$cnum,'internal\.adhoc');
4839: }
4840: my %setincrs;
4841: if ($settings{'internal.adhocaccess'}) {
4842: map { $setincrs{$_} = 1; } split(/,/,$settings{'internal.adhocaccess'});
4843: }
4844: my @statuses;
4845: if ($env{'environment.inststatus'}) {
4846: @statuses = split(/,/,$env{'environment.inststatus'});
4847: }
4848: my $user = $env{'user.name'}.':'.$env{'user.domain'};
4849: if (ref($accessref) eq 'HASH') {
4850: %access_in_dom = %{$accessref};
4851: }
4852: foreach my $role (@{$roles_by_num}) {
4853: my ($curraccess,@okstatus,@personnel);
4854: if ($setincrs{$role}) {
4855: ($curraccess,my $rest) = split(/=/,$settings{'internal.adhoc.'.$role});
4856: if ($curraccess eq 'status') {
4857: @okstatus = split(/\&/,$rest);
4858: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
4859: @personnel = split(/\&/,$rest);
4860: }
4861: } else {
4862: $curraccess = $access_in_dom{$role};
4863: if (ref($accessinfo) eq 'HASH') {
4864: if ($curraccess eq 'status') {
4865: if (ref($accessinfo->{$role}) eq 'ARRAY') {
4866: @okstatus = @{$accessinfo->{$role}};
4867: }
4868: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
4869: if (ref($accessinfo->{$role}) eq 'ARRAY') {
4870: @personnel = @{$accessinfo->{$role}};
4871: }
4872: }
4873: }
4874: }
4875: if ($curraccess eq 'none') {
4876: next;
4877: } elsif ($curraccess eq 'all') {
4878: push(@possroles,$role);
4879: } elsif ($curraccess eq 'dh') {
4880: if (grep(/^dh$/,@liveroles)) {
4881: push(@possroles,$role);
4882: } else {
4883: next;
4884: }
4885: } elsif ($curraccess eq 'da') {
4886: if (grep(/^da$/,@liveroles)) {
4887: push(@possroles,$role);
4888: } else {
4889: next;
4890: }
4891: } elsif ($curraccess eq 'status') {
4892: if (@okstatus) {
4893: if (!@statuses) {
4894: if (grep(/^default$/,@okstatus)) {
4895: push(@possroles,$role);
4896: }
4897: } else {
4898: foreach my $status (@okstatus) {
4899: if (grep(/^\Q$status\E$/,@statuses)) {
4900: push(@possroles,$role);
4901: last;
4902: }
4903: }
4904: }
4905: }
4906: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
4907: if (grep(/^\Q$user\E$/,@personnel)) {
4908: if ($curraccess eq 'exc') {
4909: push(@possroles,$role);
4910: }
4911: } elsif ($curraccess eq 'inc') {
4912: push(@possroles,$role);
4913: }
4914: }
4915: }
4916: }
4917: }
4918: }
4919: }
4920: }
4921: }
4922: unless (ref($description) eq 'HASH') {
4923: if (ref($roles_by_num) eq 'ARRAY') {
4924: my %desc;
4925: map { $desc{$_} = $_; } (@{$roles_by_num});
4926: $description = \%desc;
4927: } else {
4928: $description = {};
4929: }
4930: }
4931: return (\@possroles,$description);
4932: }
4933:
4934: # ----------------------------------------------------- Frontpage Announcements
4935: #
4936: #
4937:
4938: sub postannounce {
4939: my ($server,$text)=@_;
4940: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
4941: unless ($text=~/\w/) { $text=''; }
4942: return &reply('setannounce:'.&escape($text),$server);
4943: }
4944:
4945: sub getannounce {
4946:
4947: if (open(my $fh,"<",$perlvar{'lonDocRoot'}.'/announcement.txt')) {
4948: my $announcement='';
4949: while (my $line = <$fh>) { $announcement .= $line; }
4950: close($fh);
4951: if ($announcement=~/\w/) {
4952: return
4953: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
4954: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
4955: } else {
4956: return '';
4957: }
4958: } else {
4959: return '';
4960: }
4961: }
4962:
4963: # ---------------------------------------------------------- Course ID routines
4964: # Deal with domain's nohist_courseid.db files
4965: #
4966:
4967: sub courseidput {
4968: my ($domain,$storehash,$coursehome,$caller) = @_;
4969: return unless (ref($storehash) eq 'HASH');
4970: my $outcome;
4971: if ($caller eq 'timeonly') {
4972: my $cids = '';
4973: foreach my $item (keys(%$storehash)) {
4974: $cids.=&escape($item).'&';
4975: }
4976: $cids=~s/\&$//;
4977: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
4978: $coursehome);
4979: } else {
4980: my $items = '';
4981: foreach my $item (keys(%$storehash)) {
4982: $items.= &escape($item).'='.
4983: &freeze_escape($$storehash{$item}).'&';
4984: }
4985: $items=~s/\&$//;
4986: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
4987: $coursehome);
4988: }
4989: if ($outcome eq 'unknown_cmd') {
4990: my $what;
4991: foreach my $cid (keys(%$storehash)) {
4992: $what .= &escape($cid).'=';
4993: foreach my $item ('description','inst_code','owner','type') {
4994: $what .= &escape($storehash->{$cid}{$item}).':';
4995: }
4996: $what =~ s/\:$/&/;
4997: }
4998: $what =~ s/\&$//;
4999: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
5000: } else {
5001: return $outcome;
5002: }
5003: }
5004:
5005: sub courseiddump {
5006: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
5007: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
5008: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
5009: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner,
5010: $hasuniquecode,$reqcrsdom,$reqinstcode)=@_;
5011: my $as_hash = 1;
5012: my %returnhash;
5013: if (!$domfilter) { $domfilter=''; }
5014: my %libserv = &all_library();
5015: foreach my $tryserver (keys(%libserv)) {
5016: if ( ( $hostidflag == 1
5017: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
5018: || (!defined($hostidflag)) ) {
5019:
5020: if (($domfilter eq '') ||
5021: (&host_domain($tryserver) eq $domfilter)) {
5022: my $rep;
5023: if (grep { $_ eq $tryserver } current_machine_ids()) {
5024: $rep = LONCAPA::Lond::dump_course_id_handler(
5025: join(":", (&host_domain($tryserver), $sincefilter,
5026: &escape($descfilter), &escape($instcodefilter),
5027: &escape($ownerfilter), &escape($coursefilter),
5028: &escape($typefilter), &escape($regexp_ok),
5029: $as_hash, &escape($selfenrollonly),
5030: &escape($catfilter), $showhidden, $caller,
5031: &escape($cloner), &escape($cc_clone), $cloneonly,
5032: &escape($createdbefore), &escape($createdafter),
5033: &escape($creationcontext),$domcloner,$hasuniquecode,
5034: $reqcrsdom,&escape($reqinstcode))));
5035: } else {
5036: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
5037: $sincefilter.':'.&escape($descfilter).':'.
5038: &escape($instcodefilter).':'.&escape($ownerfilter).
5039: ':'.&escape($coursefilter).':'.&escape($typefilter).
5040: ':'.&escape($regexp_ok).':'.$as_hash.':'.
5041: &escape($selfenrollonly).':'.&escape($catfilter).':'.
5042: $showhidden.':'.$caller.':'.&escape($cloner).':'.
5043: &escape($cc_clone).':'.$cloneonly.':'.
5044: &escape($createdbefore).':'.&escape($createdafter).':'.
5045: &escape($creationcontext).':'.$domcloner.':'.$hasuniquecode.
5046: ':'.$reqcrsdom.':'.&escape($reqinstcode),$tryserver);
5047: }
5048:
5049: my @pairs=split(/\&/,$rep);
5050: foreach my $item (@pairs) {
5051: my ($key,$value)=split(/\=/,$item,2);
5052: $key = &unescape($key);
5053: next if ($key =~ /^error: 2 /);
5054: my $result = &thaw_unescape($value);
5055: if (ref($result) eq 'HASH') {
5056: $returnhash{$key}=$result;
5057: } else {
5058: my @responses = split(/:/,$value);
5059: my @items = ('description','inst_code','owner','type');
5060: for (my $i=0; $i<@responses; $i++) {
5061: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
5062: }
5063: }
5064: }
5065: }
5066: }
5067: }
5068: return %returnhash;
5069: }
5070:
5071: sub courselastaccess {
5072: my ($cdom,$cnum,$hostidref) = @_;
5073: my %returnhash;
5074: if ($cdom && $cnum) {
5075: my $chome = &homeserver($cnum,$cdom);
5076: if ($chome ne 'no_host') {
5077: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
5078: &extract_lastaccess(\%returnhash,$rep);
5079: }
5080: } else {
5081: if (!$cdom) { $cdom=''; }
5082: my %libserv = &all_library();
5083: foreach my $tryserver (keys(%libserv)) {
5084: if (ref($hostidref) eq 'ARRAY') {
5085: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
5086: }
5087: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
5088: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
5089: &extract_lastaccess(\%returnhash,$rep);
5090: }
5091: }
5092: }
5093: return %returnhash;
5094: }
5095:
5096: sub extract_lastaccess {
5097: my ($returnhash,$rep) = @_;
5098: if (ref($returnhash) eq 'HASH') {
5099: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
5100: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
5101: $rep eq '') {
5102: my @pairs=split(/\&/,$rep);
5103: foreach my $item (@pairs) {
5104: my ($key,$value)=split(/\=/,$item,2);
5105: $key = &unescape($key);
5106: next if ($key =~ /^error: 2 /);
5107: $returnhash->{$key} = &thaw_unescape($value);
5108: }
5109: }
5110: }
5111: return;
5112: }
5113:
5114: # ---------------------------------------------------------- DC e-mail
5115:
5116: sub dcmailput {
5117: my ($domain,$msgid,$message,$server)=@_;
5118: my $status = &Apache::lonnet::critical(
5119: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
5120: &escape($message),$server);
5121: return $status;
5122: }
5123:
5124: sub dcmaildump {
5125: my ($dom,$startdate,$enddate,$senders) = @_;
5126: my %returnhash=();
5127:
5128: if (defined(&domain($dom,'primary'))) {
5129: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
5130: &escape($enddate).':';
5131: my @esc_senders=map { &escape($_)} @$senders;
5132: $cmd.=&escape(join('&',@esc_senders));
5133: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
5134: my ($key,$value) = split(/\=/,$line,2);
5135: if (($key) && ($value)) {
5136: $returnhash{&unescape($key)} = &unescape($value);
5137: }
5138: }
5139: }
5140: return %returnhash;
5141: }
5142: # ---------------------------------------------------------- Domain roles
5143:
5144: sub get_domain_roles {
5145: my ($dom,$roles,$startdate,$enddate)=@_;
5146: if ((!defined($startdate)) || ($startdate eq '')) {
5147: $startdate = '.';
5148: }
5149: if ((!defined($enddate)) || ($enddate eq '')) {
5150: $enddate = '.';
5151: }
5152: my $rolelist;
5153: if (ref($roles) eq 'ARRAY') {
5154: $rolelist = join('&',@{$roles});
5155: }
5156: my %personnel = ();
5157:
5158: my %servers = &get_servers($dom,'library');
5159: foreach my $tryserver (keys(%servers)) {
5160: %{$personnel{$tryserver}}=();
5161: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
5162: &escape($startdate).':'.
5163: &escape($enddate).':'.
5164: &escape($rolelist), $tryserver))) {
5165: my ($key,$value) = split(/\=/,$line,2);
5166: if (($key) && ($value)) {
5167: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
5168: }
5169: }
5170: }
5171: return %personnel;
5172: }
5173:
5174: sub get_active_domroles {
5175: my ($dom,$roles) = @_;
5176: return () unless (ref($roles) eq 'ARRAY');
5177: my $now = time;
5178: my %dompersonnel = &get_domain_roles($dom,$roles,$now,$now);
5179: my %domroles;
5180: foreach my $server (keys(%dompersonnel)) {
5181: foreach my $user (sort(keys(%{$dompersonnel{$server}}))) {
5182: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,$user);
5183: $domroles{$uname.':'.$udom} = $dompersonnel{$server}{$user};
5184: }
5185: }
5186: return %domroles;
5187: }
5188:
5189: # ----------------------------------------------------------- Interval timing
5190:
5191: {
5192: # Caches needed for speedup of navmaps
5193: # We don't want to cache this for very long at all (5 seconds at most)
5194: #
5195: # The user for whom we cache
5196: my $cachedkey='';
5197: # The cached times for this user
5198: my %cachedtimes=();
5199: # When this was last done
5200: my $cachedtime='';
5201:
5202: sub load_all_first_access {
5203: my ($uname,$udom,$ignorecache)=@_;
5204: if (($cachedkey eq $uname.':'.$udom) &&
5205: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'}) &&
5206: (!$ignorecache)) {
5207: return;
5208: }
5209: $cachedtime=time;
5210: $cachedkey=$uname.':'.$udom;
5211: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
5212: }
5213:
5214: sub get_first_access {
5215: my ($type,$argsymb,$argmap,$ignorecache)=@_;
5216: my ($symb,$courseid,$udom,$uname)=&whichuser();
5217: if ($argsymb) { $symb=$argsymb; }
5218: my ($map,$id,$res)=&decode_symb($symb);
5219: if ($argmap) { $map = $argmap; }
5220: if ($type eq 'course') {
5221: $res='course';
5222: } elsif ($type eq 'map') {
5223: $res=&symbread($map);
5224: } else {
5225: $res=$symb;
5226: }
5227: &load_all_first_access($uname,$udom,$ignorecache);
5228: return $cachedtimes{"$courseid\0$res"};
5229: }
5230:
5231: sub set_first_access {
5232: my ($type,$interval)=@_;
5233: my ($symb,$courseid,$udom,$uname)=&whichuser();
5234: my ($map,$id,$res)=&decode_symb($symb);
5235: if ($type eq 'course') {
5236: $res='course';
5237: } elsif ($type eq 'map') {
5238: $res=&symbread($map);
5239: } else {
5240: $res=$symb;
5241: }
5242: $cachedkey='';
5243: my $firstaccess=&get_first_access($type,$symb,$map);
5244: if ($firstaccess) {
5245: &logthis("First access time already set ($firstaccess) when attempting ".
5246: "to set new value (type: $type, extent: $res) for $uname:$udom ".
5247: "in $courseid");
5248: return 'already_set';
5249: } else {
5250: my $start = time;
5251: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
5252: $udom,$uname);
5253: if ($putres eq 'ok') {
5254: &put('timerinterval',{"$courseid\0$res"=>$interval},
5255: $udom,$uname);
5256: &appenv(
5257: {
5258: 'course.'.$courseid.'.firstaccess.'.$res => $start,
5259: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
5260: }
5261: );
5262: if (($cachedtime) && (abs($start-$cachedtime) < 5)) {
5263: $cachedtimes{"$courseid\0$res"} = $start;
5264: }
5265: } elsif ($putres ne 'refused') {
5266: &logthis("Result: $putres when attempting to set first access time ".
5267: "(type: $type, extent: $res) for $uname:$udom in $courseid");
5268: }
5269: return $putres;
5270: }
5271: return 'already_set';
5272: }
5273: }
5274:
5275: # --------------------------------------------- Set Expire Date for Spreadsheet
5276:
5277: sub expirespread {
5278: my ($uname,$udom,$stype,$usymb)=@_;
5279: my $cid=$env{'request.course.id'};
5280: if ($cid) {
5281: my $now=time;
5282: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
5283: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
5284: $env{'course.'.$cid.'.num'}.
5285: ':nohist_expirationdates:'.
5286: &escape($key).'='.$now,
5287: $env{'course.'.$cid.'.home'})
5288: }
5289: return 'ok';
5290: }
5291:
5292: # ----------------------------------------------------- Devalidate Spreadsheets
5293:
5294: sub devalidate {
5295: my ($symb,$uname,$udom)=@_;
5296: my $cid=$env{'request.course.id'};
5297: if ($cid) {
5298: # delete the stored spreadsheets for
5299: # - the student level sheet of this user in course's homespace
5300: # - the assessment level sheet for this resource
5301: # for this user in user's homespace
5302: # - current conditional state info
5303: my $key=$uname.':'.$udom.':';
5304: my $status=
5305: &del('nohist_calculatedsheets',
5306: [$key.'studentcalc:'],
5307: $env{'course.'.$cid.'.domain'},
5308: $env{'course.'.$cid.'.num'})
5309: .' '.
5310: &del('nohist_calculatedsheets_'.$cid,
5311: [$key.'assesscalc:'.$symb],$udom,$uname);
5312: unless ($status eq 'ok ok') {
5313: &logthis('Could not devalidate spreadsheet '.
5314: $uname.' at '.$udom.' for '.
5315: $symb.': '.$status);
5316: }
5317: &delenv('user.state.'.$cid);
5318: }
5319: }
5320:
5321: sub get_scalar {
5322: my ($string,$end) = @_;
5323: my $value;
5324: if ($$string =~ s/^([^&]*?)($end)/$2/) {
5325: $value = $1;
5326: } elsif ($$string =~ s/^([^&]*?)&//) {
5327: $value = $1;
5328: }
5329: return &unescape($value);
5330: }
5331:
5332: sub array2str {
5333: my (@array) = @_;
5334: my $result=&arrayref2str(\@array);
5335: $result=~s/^__ARRAY_REF__//;
5336: $result=~s/__END_ARRAY_REF__$//;
5337: return $result;
5338: }
5339:
5340: sub arrayref2str {
5341: my ($arrayref) = @_;
5342: my $result='__ARRAY_REF__';
5343: foreach my $elem (@$arrayref) {
5344: if(ref($elem) eq 'ARRAY') {
5345: $result.=&arrayref2str($elem).'&';
5346: } elsif(ref($elem) eq 'HASH') {
5347: $result.=&hashref2str($elem).'&';
5348: } elsif(ref($elem)) {
5349: #print("Got a ref of ".(ref($elem))." skipping.");
5350: } else {
5351: $result.=&escape($elem).'&';
5352: }
5353: }
5354: $result=~s/\&$//;
5355: $result .= '__END_ARRAY_REF__';
5356: return $result;
5357: }
5358:
5359: sub hash2str {
5360: my (%hash) = @_;
5361: my $result=&hashref2str(\%hash);
5362: $result=~s/^__HASH_REF__//;
5363: $result=~s/__END_HASH_REF__$//;
5364: return $result;
5365: }
5366:
5367: sub hashref2str {
5368: my ($hashref)=@_;
5369: my $result='__HASH_REF__';
5370: foreach my $key (sort(keys(%$hashref))) {
5371: if (ref($key) eq 'ARRAY') {
5372: $result.=&arrayref2str($key).'=';
5373: } elsif (ref($key) eq 'HASH') {
5374: $result.=&hashref2str($key).'=';
5375: } elsif (ref($key)) {
5376: $result.='=';
5377: #print("Got a ref of ".(ref($key))." skipping.");
5378: } else {
5379: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
5380: }
5381:
5382: if(ref($hashref->{$key}) eq 'ARRAY') {
5383: $result.=&arrayref2str($hashref->{$key}).'&';
5384: } elsif(ref($hashref->{$key}) eq 'HASH') {
5385: $result.=&hashref2str($hashref->{$key}).'&';
5386: } elsif(ref($hashref->{$key})) {
5387: $result.='&';
5388: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
5389: } else {
5390: $result.=&escape($hashref->{$key}).'&';
5391: }
5392: }
5393: $result=~s/\&$//;
5394: $result .= '__END_HASH_REF__';
5395: return $result;
5396: }
5397:
5398: sub str2hash {
5399: my ($string)=@_;
5400: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
5401: return %$hash;
5402: }
5403:
5404: sub str2hashref {
5405: my ($string) = @_;
5406:
5407: my %hash;
5408:
5409: if($string !~ /^__HASH_REF__/) {
5410: if (! ($string eq '' || !defined($string))) {
5411: $hash{'error'}='Not hash reference';
5412: }
5413: return (\%hash, $string);
5414: }
5415:
5416: $string =~ s/^__HASH_REF__//;
5417:
5418: while($string !~ /^__END_HASH_REF__/) {
5419: #key
5420: my $key='';
5421: if($string =~ /^__HASH_REF__/) {
5422: ($key, $string)=&str2hashref($string);
5423: if(defined($key->{'error'})) {
5424: $hash{'error'}='Bad data';
5425: return (\%hash, $string);
5426: }
5427: } elsif($string =~ /^__ARRAY_REF__/) {
5428: ($key, $string)=&str2arrayref($string);
5429: if($key->[0] eq 'Array reference error') {
5430: $hash{'error'}='Bad data';
5431: return (\%hash, $string);
5432: }
5433: } else {
5434: $string =~ s/^(.*?)=//;
5435: $key=&unescape($1);
5436: }
5437: $string =~ s/^=//;
5438:
5439: #value
5440: my $value='';
5441: if($string =~ /^__HASH_REF__/) {
5442: ($value, $string)=&str2hashref($string);
5443: if(defined($value->{'error'})) {
5444: $hash{'error'}='Bad data';
5445: return (\%hash, $string);
5446: }
5447: } elsif($string =~ /^__ARRAY_REF__/) {
5448: ($value, $string)=&str2arrayref($string);
5449: if($value->[0] eq 'Array reference error') {
5450: $hash{'error'}='Bad data';
5451: return (\%hash, $string);
5452: }
5453: } else {
5454: $value=&get_scalar(\$string,'__END_HASH_REF__');
5455: }
5456: $string =~ s/^&//;
5457:
5458: $hash{$key}=$value;
5459: }
5460:
5461: $string =~ s/^__END_HASH_REF__//;
5462:
5463: return (\%hash, $string);
5464: }
5465:
5466: sub str2array {
5467: my ($string)=@_;
5468: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
5469: return @$array;
5470: }
5471:
5472: sub str2arrayref {
5473: my ($string) = @_;
5474: my @array;
5475:
5476: if($string !~ /^__ARRAY_REF__/) {
5477: if (! ($string eq '' || !defined($string))) {
5478: $array[0]='Array reference error';
5479: }
5480: return (\@array, $string);
5481: }
5482:
5483: $string =~ s/^__ARRAY_REF__//;
5484:
5485: while($string !~ /^__END_ARRAY_REF__/) {
5486: my $value='';
5487: if($string =~ /^__HASH_REF__/) {
5488: ($value, $string)=&str2hashref($string);
5489: if(defined($value->{'error'})) {
5490: $array[0] ='Array reference error';
5491: return (\@array, $string);
5492: }
5493: } elsif($string =~ /^__ARRAY_REF__/) {
5494: ($value, $string)=&str2arrayref($string);
5495: if($value->[0] eq 'Array reference error') {
5496: $array[0] ='Array reference error';
5497: return (\@array, $string);
5498: }
5499: } else {
5500: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
5501: }
5502: $string =~ s/^&//;
5503:
5504: push(@array, $value);
5505: }
5506:
5507: $string =~ s/^__END_ARRAY_REF__//;
5508:
5509: return (\@array, $string);
5510: }
5511:
5512: # -------------------------------------------------------------------Temp Store
5513:
5514: sub tmpreset {
5515: my ($symb,$namespace,$domain,$stuname) = @_;
5516: if (!$symb) {
5517: $symb=&symbread();
5518: if (!$symb) { $symb= $env{'request.url'}; }
5519: }
5520: $symb=escape($symb);
5521:
5522: if (!$namespace) { $namespace=$env{'request.state'}; }
5523: $namespace=~s/\//\_/g;
5524: $namespace=~s/\W//g;
5525:
5526: if (!$domain) { $domain=$env{'user.domain'}; }
5527: if (!$stuname) { $stuname=$env{'user.name'}; }
5528: if ($domain eq 'public' && $stuname eq 'public') {
5529: $stuname=$ENV{'REMOTE_ADDR'};
5530: }
5531: my $path=LONCAPA::tempdir();
5532: my %hash;
5533: if (tie(%hash,'GDBM_File',
5534: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5535: &GDBM_WRCREAT(),0640)) {
5536: foreach my $key (keys(%hash)) {
5537: if ($key=~ /:$symb/) {
5538: delete($hash{$key});
5539: }
5540: }
5541: }
5542: }
5543:
5544: sub tmpstore {
5545: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
5546:
5547: if (!$symb) {
5548: $symb=&symbread();
5549: if (!$symb) { $symb= $env{'request.url'}; }
5550: }
5551: $symb=escape($symb);
5552:
5553: if (!$namespace) {
5554: # I don't think we would ever want to store this for a course.
5555: # it seems this will only be used if we don't have a course.
5556: #$namespace=$env{'request.course.id'};
5557: #if (!$namespace) {
5558: $namespace=$env{'request.state'};
5559: #}
5560: }
5561: $namespace=~s/\//\_/g;
5562: $namespace=~s/\W//g;
5563: if (!$domain) { $domain=$env{'user.domain'}; }
5564: if (!$stuname) { $stuname=$env{'user.name'}; }
5565: if ($domain eq 'public' && $stuname eq 'public') {
5566: $stuname=$ENV{'REMOTE_ADDR'};
5567: }
5568: my $now=time;
5569: my %hash;
5570: my $path=LONCAPA::tempdir();
5571: if (tie(%hash,'GDBM_File',
5572: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5573: &GDBM_WRCREAT(),0640)) {
5574: $hash{"version:$symb"}++;
5575: my $version=$hash{"version:$symb"};
5576: my $allkeys='';
5577: foreach my $key (keys(%$storehash)) {
5578: $allkeys.=$key.':';
5579: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
5580: }
5581: $hash{"$version:$symb:timestamp"}=$now;
5582: $allkeys.='timestamp';
5583: $hash{"$version:keys:$symb"}=$allkeys;
5584: if (untie(%hash)) {
5585: return 'ok';
5586: } else {
5587: return "error:$!";
5588: }
5589: } else {
5590: return "error:$!";
5591: }
5592: }
5593:
5594: # -----------------------------------------------------------------Temp Restore
5595:
5596: sub tmprestore {
5597: my ($symb,$namespace,$domain,$stuname) = @_;
5598:
5599: if (!$symb) {
5600: $symb=&symbread();
5601: if (!$symb) { $symb= $env{'request.url'}; }
5602: }
5603: $symb=escape($symb);
5604:
5605: if (!$namespace) { $namespace=$env{'request.state'}; }
5606:
5607: if (!$domain) { $domain=$env{'user.domain'}; }
5608: if (!$stuname) { $stuname=$env{'user.name'}; }
5609: if ($domain eq 'public' && $stuname eq 'public') {
5610: $stuname=$ENV{'REMOTE_ADDR'};
5611: }
5612: my %returnhash;
5613: $namespace=~s/\//\_/g;
5614: $namespace=~s/\W//g;
5615: my %hash;
5616: my $path=LONCAPA::tempdir();
5617: if (tie(%hash,'GDBM_File',
5618: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5619: &GDBM_READER(),0640)) {
5620: my $version=$hash{"version:$symb"};
5621: $returnhash{'version'}=$version;
5622: my $scope;
5623: for ($scope=1;$scope<=$version;$scope++) {
5624: my $vkeys=$hash{"$scope:keys:$symb"};
5625: my @keys=split(/:/,$vkeys);
5626: my $key;
5627: $returnhash{"$scope:keys"}=$vkeys;
5628: foreach $key (@keys) {
5629: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
5630: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
5631: }
5632: }
5633: if (!(untie(%hash))) {
5634: return "error:$!";
5635: }
5636: } else {
5637: return "error:$!";
5638: }
5639: return %returnhash;
5640: }
5641:
5642: # ----------------------------------------------------------------------- Store
5643:
5644: sub store {
5645: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
5646: my $home='';
5647:
5648: if ($stuname) { $home=&homeserver($stuname,$domain); }
5649:
5650: $symb=&symbclean($symb);
5651: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
5652:
5653: if (!$domain) { $domain=$env{'user.domain'}; }
5654: if (!$stuname) { $stuname=$env{'user.name'}; }
5655:
5656: &devalidate($symb,$stuname,$domain);
5657:
5658: $symb=escape($symb);
5659: if (!$namespace) {
5660: unless ($namespace=$env{'request.course.id'}) {
5661: return '';
5662: }
5663: }
5664: if (!$home) { $home=$env{'user.home'}; }
5665:
5666: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
5667: $$storehash{'host'}=$perlvar{'lonHostID'};
5668:
5669: my $namevalue='';
5670: foreach my $key (keys(%$storehash)) {
5671: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5672: }
5673: $namevalue=~s/\&$//;
5674: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
5675: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
5676: }
5677:
5678: # -------------------------------------------------------------- Critical Store
5679:
5680: sub cstore {
5681: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
5682: my $home='';
5683:
5684: if ($stuname) { $home=&homeserver($stuname,$domain); }
5685:
5686: $symb=&symbclean($symb);
5687: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
5688:
5689: if (!$domain) { $domain=$env{'user.domain'}; }
5690: if (!$stuname) { $stuname=$env{'user.name'}; }
5691:
5692: &devalidate($symb,$stuname,$domain);
5693:
5694: $symb=escape($symb);
5695: if (!$namespace) {
5696: unless ($namespace=$env{'request.course.id'}) {
5697: return '';
5698: }
5699: }
5700: if (!$home) { $home=$env{'user.home'}; }
5701:
5702: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
5703: $$storehash{'host'}=$perlvar{'lonHostID'};
5704:
5705: my $namevalue='';
5706: foreach my $key (keys(%$storehash)) {
5707: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5708: }
5709: $namevalue=~s/\&$//;
5710: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
5711: return critical
5712: ("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
5713: }
5714:
5715: # --------------------------------------------------------------------- Restore
5716:
5717: sub restore {
5718: my ($symb,$namespace,$domain,$stuname) = @_;
5719: my $home='';
5720:
5721: if ($stuname) { $home=&homeserver($stuname,$domain); }
5722:
5723: if (!$symb) {
5724: return if ($namespace eq 'courserequests');
5725: unless ($symb=escape(&symbread())) { return ''; }
5726: } else {
5727: unless ($namespace eq 'courserequests') {
5728: $symb=&escape(&symbclean($symb));
5729: }
5730: }
5731: if (!$namespace) {
5732: unless ($namespace=$env{'request.course.id'}) {
5733: return '';
5734: }
5735: }
5736: if (!$domain) { $domain=$env{'user.domain'}; }
5737: if (!$stuname) { $stuname=$env{'user.name'}; }
5738: if (!$home) { $home=$env{'user.home'}; }
5739: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
5740:
5741: my %returnhash=();
5742: foreach my $line (split(/\&/,$answer)) {
5743: my ($name,$value)=split(/\=/,$line);
5744: $returnhash{&unescape($name)}=&thaw_unescape($value);
5745: }
5746: my $version;
5747: for ($version=1;$version<=$returnhash{'version'};$version++) {
5748: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
5749: $returnhash{$item}=$returnhash{$version.':'.$item};
5750: }
5751: }
5752: return %returnhash;
5753: }
5754:
5755: # ---------------------------------------------------------- Course Description
5756: #
5757: #
5758:
5759: sub coursedescription {
5760: my ($courseid,$args)=@_;
5761: $courseid=~s/^\///;
5762: $courseid=~s/\_/\//g;
5763: my ($cdomain,$cnum)=split(/\//,$courseid);
5764: my $chome=&homeserver($cnum,$cdomain);
5765: my $normalid=$cdomain.'_'.$cnum;
5766: # need to always cache even if we get errors otherwise we keep
5767: # trying and trying and trying to get the course description.
5768: my %envhash=();
5769: my %returnhash=();
5770:
5771: my $expiretime=600;
5772: if ($env{'request.course.id'} eq $normalid) {
5773: $expiretime=120;
5774: }
5775:
5776: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
5777: if (!$args->{'freshen_cache'}
5778: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
5779: foreach my $key (keys(%env)) {
5780: next if ($key !~ /^\Q$prefix\E(.*)/);
5781: my ($setting) = $1;
5782: $returnhash{$setting} = $env{$key};
5783: }
5784: return %returnhash;
5785: }
5786:
5787: # get the data again
5788:
5789: if (!$args->{'one_time'}) {
5790: $envhash{'course.'.$normalid.'.last_cache'}=time;
5791: }
5792:
5793: if ($chome ne 'no_host') {
5794: %returnhash=&dump('environment',$cdomain,$cnum);
5795: if (!exists($returnhash{'con_lost'})) {
5796: my $username = $env{'user.name'}; # Defult username
5797: if(defined $args->{'user'}) {
5798: $username = $args->{'user'};
5799: }
5800: $returnhash{'home'}= $chome;
5801: $returnhash{'domain'} = $cdomain;
5802: $returnhash{'num'} = $cnum;
5803: if (!defined($returnhash{'type'})) {
5804: $returnhash{'type'} = 'Course';
5805: }
5806: while (my ($name,$value) = each %returnhash) {
5807: $envhash{'course.'.$normalid.'.'.$name}=$value;
5808: }
5809: $returnhash{'url'}=&clutter($returnhash{'url'});
5810: $returnhash{'fn'}=LONCAPA::tempdir() .
5811: $username.'_'.$cdomain.'_'.$cnum;
5812: $envhash{'course.'.$normalid.'.home'}=$chome;
5813: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
5814: $envhash{'course.'.$normalid.'.num'}=$cnum;
5815: }
5816: }
5817: if (!$args->{'one_time'}) {
5818: &appenv(\%envhash);
5819: }
5820: return %returnhash;
5821: }
5822:
5823: sub update_released_required {
5824: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
5825: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
5826: $cid = $env{'request.course.id'};
5827: $cdom = $env{'course.'.$cid.'.domain'};
5828: $cnum = $env{'course.'.$cid.'.num'};
5829: $chome = $env{'course.'.$cid.'.home'};
5830: }
5831: if ($needsrelease) {
5832: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
5833: my $needsupdate;
5834: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
5835: $needsupdate = 1;
5836: } else {
5837: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
5838: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
5839: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
5840: $needsupdate = 1;
5841: }
5842: }
5843: if ($needsupdate) {
5844: my %needshash = (
5845: 'internal.releaserequired' => $needsrelease,
5846: );
5847: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
5848: if ($putresult eq 'ok') {
5849: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
5850: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
5851: if (ref($crsinfo{$cid}) eq 'HASH') {
5852: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
5853: &courseidput($cdom,\%crsinfo,$chome,'notime');
5854: }
5855: }
5856: }
5857: }
5858: return;
5859: }
5860:
5861: # -------------------------------------------------See if a user is privileged
5862:
5863: sub privileged {
5864: my ($username,$domain,$possdomains,$possroles)=@_;
5865: my $now = time;
5866: my $roles;
5867: if (ref($possroles) eq 'ARRAY') {
5868: $roles = $possroles;
5869: } else {
5870: $roles = ['dc','su'];
5871: }
5872: if (ref($possdomains) eq 'ARRAY') {
5873: my %privileged = &privileged_by_domain($possdomains,$roles);
5874: foreach my $dom (@{$possdomains}) {
5875: if (($username =~ /^$match_username$/) && ($domain =~ /^$match_domain$/) &&
5876: (ref($privileged{$dom}) eq 'HASH')) {
5877: foreach my $role (@{$roles}) {
5878: if (ref($privileged{$dom}{$role}) eq 'HASH') {
5879: if (exists($privileged{$dom}{$role}{$username.':'.$domain})) {
5880: my ($end,$start) = split(/:/,$privileged{$dom}{$role}{$username.':'.$domain});
5881: return 1 unless (($end && $end < $now) ||
5882: ($start && $start > $now));
5883: }
5884: }
5885: }
5886: }
5887: }
5888: } else {
5889: my %rolesdump = &dump("roles", $domain, $username) or return 0;
5890: my $now = time;
5891:
5892: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys(%rolesdump)}) {
5893: my ($trole, $tend, $tstart) = split(/_/, $role);
5894: if (grep(/^\Q$trole\E$/,@{$roles})) {
5895: return 1 unless ($tend && $tend < $now)
5896: or ($tstart && $tstart > $now);
5897: }
5898: }
5899: }
5900: return 0;
5901: }
5902:
5903: sub privileged_by_domain {
5904: my ($domains,$roles) = @_;
5905: my %privileged = ();
5906: my $cachetime = 60*60*24;
5907: my $now = time;
5908: unless ((ref($domains) eq 'ARRAY') && (ref($roles) eq 'ARRAY')) {
5909: return %privileged;
5910: }
5911: foreach my $dom (@{$domains}) {
5912: next if (ref($privileged{$dom}) eq 'HASH');
5913: my $needroles;
5914: foreach my $role (@{$roles}) {
5915: my ($result,$cached)=&is_cached_new('priv_'.$role,$dom);
5916: if (defined($cached)) {
5917: if (ref($result) eq 'HASH') {
5918: $privileged{$dom}{$role} = $result;
5919: }
5920: } else {
5921: $needroles = 1;
5922: }
5923: }
5924: if ($needroles) {
5925: my %dompersonnel = &get_domain_roles($dom,$roles);
5926: $privileged{$dom} = {};
5927: foreach my $server (keys(%dompersonnel)) {
5928: if (ref($dompersonnel{$server}) eq 'HASH') {
5929: foreach my $item (keys(%{$dompersonnel{$server}})) {
5930: my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
5931: my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
5932: next if ($end && $end < $now);
5933: $privileged{$dom}{$trole}{$uname.':'.$udom} =
5934: $dompersonnel{$server}{$item};
5935: }
5936: }
5937: }
5938: if (ref($privileged{$dom}) eq 'HASH') {
5939: foreach my $role (@{$roles}) {
5940: if (ref($privileged{$dom}{$role}) eq 'HASH') {
5941: &do_cache_new('priv_'.$role,$dom,$privileged{$dom}{$role},$cachetime);
5942: } else {
5943: my %hash = ();
5944: &do_cache_new('priv_'.$role,$dom,\%hash,$cachetime);
5945: }
5946: }
5947: }
5948: }
5949: }
5950: return %privileged;
5951: }
5952:
5953: # -------------------------------------------------------- Get user privileges
5954:
5955: sub rolesinit {
5956: my ($domain, $username) = @_;
5957: my %userroles = ('user.login.time' => time);
5958: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
5959:
5960: # firstaccess and timerinterval are related to timed maps/resources.
5961: # also, blocking can be triggered by an activating timer
5962: # it's saved in the user's %env.
5963: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
5964: my %timerinterval = &dump('timerinterval', $domain, $username);
5965: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
5966: %timerintchk, %timerintenv);
5967:
5968: foreach my $key (keys(%firstaccess)) {
5969: my ($cid, $rest) = split(/\0/, $key);
5970: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
5971: }
5972:
5973: foreach my $key (keys(%timerinterval)) {
5974: my ($cid,$rest) = split(/\0/,$key);
5975: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
5976: }
5977:
5978: my %allroles=();
5979: my %allgroups=();
5980:
5981: for my $area (grep { ! /^rolesdef_/ } keys(%rolesdump)) {
5982: my $role = $rolesdump{$area};
5983: $area =~ s/\_\w\w$//;
5984:
5985: my ($trole, $tend, $tstart, $group_privs);
5986:
5987: if ($role =~ /^cr/) {
5988: # Custom role, defined by a user
5989: # e.g., user.role.cr/msu/smith/mynewrole
5990: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
5991: $trole = $1;
5992: ($tend, $tstart) = split('_', $2);
5993: } else {
5994: $trole = $role;
5995: }
5996: } elsif ($role =~ m|^gr/|) {
5997: # Role of member in a group, defined within a course/community
5998: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
5999: ($trole, $tend, $tstart) = split(/_/, $role);
6000: next if $tstart eq '-1';
6001: ($trole, $group_privs) = split(/\//, $trole);
6002: $group_privs = &unescape($group_privs);
6003: } else {
6004: # Just a normal role, defined in roles.tab
6005: ($trole, $tend, $tstart) = split(/_/,$role);
6006: }
6007:
6008: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
6009: $username);
6010: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
6011:
6012: # role expired or not available yet?
6013: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
6014: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
6015:
6016: next if $area eq '' or $trole eq '';
6017:
6018: my $spec = "$trole.$area";
6019: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
6020:
6021: if ($trole =~ /^cr\//) {
6022: # Custom role, defined by a user
6023: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
6024: } elsif ($trole eq 'gr') {
6025: # Role of a member in a group, defined within a course/community
6026: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
6027: next;
6028: } else {
6029: # Normal role, defined in roles.tab
6030: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
6031: }
6032:
6033: my $cid = $tdomain.'_'.$trest;
6034: unless ($firstaccchk{$cid}) {
6035: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
6036: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
6037: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
6038: $coursetimerstarts{$cid}{$item};
6039: }
6040: }
6041: $firstaccchk{$cid} = 1;
6042: }
6043: unless ($timerintchk{$cid}) {
6044: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
6045: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
6046: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
6047: $coursetimerintervals{$cid}{$item};
6048: }
6049: }
6050: $timerintchk{$cid} = 1;
6051: }
6052: }
6053:
6054: @userroles{'user.author','user.adv','user.rar'} = &set_userprivs(\%userroles,
6055: \%allroles, \%allgroups);
6056: $env{'user.adv'} = $userroles{'user.adv'};
6057: $env{'user.rar'} = $userroles{'user.rar'};
6058:
6059: return (\%userroles,\%firstaccenv,\%timerintenv);
6060: }
6061:
6062: sub set_arearole {
6063: my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
6064: unless ($nolog) {
6065: # log the associated role with the area
6066: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
6067: }
6068: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
6069: }
6070:
6071: sub custom_roleprivs {
6072: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
6073: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
6074: my $homsvr = &homeserver($rauthor,$rdomain);
6075: if (&hostname($homsvr) ne '') {
6076: my ($rdummy,$roledef)=
6077: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
6078: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
6079: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
6080: if (defined($syspriv)) {
6081: if ($trest =~ /^$match_community$/) {
6082: $syspriv =~ s/bre\&S//;
6083: }
6084: $$allroles{'cm./'}.=':'.$syspriv;
6085: $$allroles{$spec.'./'}.=':'.$syspriv;
6086: }
6087: if ($tdomain ne '') {
6088: if (defined($dompriv)) {
6089: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
6090: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
6091: }
6092: if (($trest ne '') && (defined($coursepriv))) {
6093: if ($trole =~ m{^cr/$tdomain/$tdomain\Q-domainconfig\E/([^/]+)$}) {
6094: my $rolename = $1;
6095: $coursepriv = &course_adhocrole_privs($rolename,$tdomain,$trest,$coursepriv);
6096: }
6097: $$allroles{'cm.'.$area}.=':'.$coursepriv;
6098: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
6099: }
6100: }
6101: }
6102: }
6103: }
6104:
6105: sub course_adhocrole_privs {
6106: my ($rolename,$cdom,$cnum,$coursepriv) = @_;
6107: my %overrides = &get('environment',["internal.adhocpriv.$rolename"],$cdom,$cnum);
6108: if ($overrides{"internal.adhocpriv.$rolename"}) {
6109: my (%currprivs,%storeprivs);
6110: foreach my $item (split(/:/,$coursepriv)) {
6111: my ($priv,$restrict) = split(/\&/,$item);
6112: $currprivs{$priv} = $restrict;
6113: }
6114: my (%possadd,%possremove,%full);
6115: foreach my $item (split(/\:/,$Apache::lonnet::pr{'cr:c'})) {
6116: my ($priv,$restrict)=split(/\&/,$item);
6117: $full{$priv} = $restrict;
6118: }
6119: foreach my $item (split(/,/,$overrides{"internal.adhocpriv.$rolename"})) {
6120: next if ($item eq '');
6121: my ($rule,$rest) = split(/=/,$item);
6122: next unless (($rule eq 'off') || ($rule eq 'on'));
6123: foreach my $priv (split(/:/,$rest)) {
6124: if ($priv ne '') {
6125: if ($rule eq 'off') {
6126: $possremove{$priv} = 1;
6127: } else {
6128: $possadd{$priv} = 1;
6129: }
6130: }
6131: }
6132: }
6133: foreach my $priv (sort(keys(%full))) {
6134: if (exists($currprivs{$priv})) {
6135: unless (exists($possremove{$priv})) {
6136: $storeprivs{$priv} = $currprivs{$priv};
6137: }
6138: } elsif (exists($possadd{$priv})) {
6139: $storeprivs{$priv} = $full{$priv};
6140: }
6141: }
6142: $coursepriv = ':'.join(':',map { $_.'&'.$storeprivs{$_}; } sort(keys(%storeprivs)));
6143: }
6144: return $coursepriv;
6145: }
6146:
6147: sub group_roleprivs {
6148: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
6149: my $access = 1;
6150: my $now = time;
6151: if (($tend!=0) && ($tend<$now)) { $access = 0; }
6152: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
6153: if ($access) {
6154: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
6155: $$allgroups{$course}{$group} .=':'.$group_privs;
6156: }
6157: }
6158:
6159: sub standard_roleprivs {
6160: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
6161: if (defined($pr{$trole.':s'})) {
6162: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
6163: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
6164: }
6165: if ($tdomain ne '') {
6166: if (defined($pr{$trole.':d'})) {
6167: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
6168: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
6169: }
6170: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
6171: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
6172: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
6173: }
6174: }
6175: }
6176:
6177: sub set_userprivs {
6178: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
6179: my $author=0;
6180: my $adv=0;
6181: my $rar=0;
6182: my %grouproles = ();
6183: if (keys(%{$allgroups}) > 0) {
6184: my @groupkeys;
6185: foreach my $role (keys(%{$allroles})) {
6186: push(@groupkeys,$role);
6187: }
6188: if (ref($groups_roles) eq 'HASH') {
6189: foreach my $key (keys(%{$groups_roles})) {
6190: unless (grep(/^\Q$key\E$/,@groupkeys)) {
6191: push(@groupkeys,$key);
6192: }
6193: }
6194: }
6195: if (@groupkeys > 0) {
6196: foreach my $role (@groupkeys) {
6197: my ($trole,$area,$sec,$extendedarea);
6198: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
6199: $trole = $1;
6200: $area = $2;
6201: $sec = $3;
6202: $extendedarea = $area.$sec;
6203: if (exists($$allgroups{$area})) {
6204: foreach my $group (keys(%{$$allgroups{$area}})) {
6205: my $spec = $trole.'.'.$extendedarea;
6206: $grouproles{$spec.'.'.$area.'/'.$group} =
6207: $$allgroups{$area}{$group};
6208: }
6209: }
6210: }
6211: }
6212: }
6213: }
6214: foreach my $group (keys(%grouproles)) {
6215: $$allroles{$group} = $grouproles{$group};
6216: }
6217: foreach my $role (keys(%{$allroles})) {
6218: my %thesepriv;
6219: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
6220: foreach my $item (split(/:/,$$allroles{$role})) {
6221: if ($item ne '') {
6222: my ($privilege,$restrictions)=split(/&/,$item);
6223: if ($restrictions eq '') {
6224: $thesepriv{$privilege}='F';
6225: } elsif ($thesepriv{$privilege} ne 'F') {
6226: $thesepriv{$privilege}.=$restrictions;
6227: }
6228: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
6229: if ($thesepriv{'rar'} eq 'F') { $rar=1; }
6230: }
6231: }
6232: my $thesestr='';
6233: foreach my $priv (sort(keys(%thesepriv))) {
6234: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
6235: }
6236: $userroles->{'user.priv.'.$role} = $thesestr;
6237: }
6238: return ($author,$adv,$rar);
6239: }
6240:
6241: sub role_status {
6242: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
6243: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
6244: my ($one,$two) = split(m{\./},$rolekey,2);
6245: (undef,undef,$$role) = split(/\./,$one,3);
6246: unless (!defined($$role) || $$role eq '') {
6247: $$where = '/'.$two;
6248: $$trolecode=$$role.'.'.$$where;
6249: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
6250: $$tstatus='is';
6251: if ($$tstart && $$tstart>$update) {
6252: $$tstatus='future';
6253: if ($$tstart<$now) {
6254: if ($$tstart && $$tstart>$refresh) {
6255: if (($$where ne '') && ($$role ne '')) {
6256: my (%allroles,%allgroups,$group_privs,
6257: %groups_roles,@rolecodes);
6258: my %userroles = (
6259: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
6260: );
6261: @rolecodes = ('cm');
6262: my $spec=$$role.'.'.$$where;
6263: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
6264: if ($$role =~ /^cr\//) {
6265: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
6266: push(@rolecodes,'cr');
6267: } elsif ($$role eq 'gr') {
6268: push(@rolecodes,$$role);
6269: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
6270: $env{'user.name'});
6271: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
6272: (undef,my $group_privs) = split(/\//,$trole);
6273: $group_privs = &unescape($group_privs);
6274: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
6275: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
6276: &get_groups_roles($tdomain,$trest,
6277: \%course_roles,\@rolecodes,
6278: \%groups_roles);
6279: } else {
6280: push(@rolecodes,$$role);
6281: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
6282: }
6283: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%allroles,\%allgroups,
6284: \%groups_roles);
6285: &appenv(\%userroles,\@rolecodes);
6286: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
6287: }
6288: }
6289: $$tstatus = 'is';
6290: }
6291: }
6292: if ($$tend) {
6293: if ($$tend<$update) {
6294: $$tstatus='expired';
6295: } elsif ($$tend<$now) {
6296: $$tstatus='will_not';
6297: }
6298: }
6299: }
6300: }
6301: }
6302:
6303: sub get_groups_roles {
6304: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
6305: return unless((ref($cdom_courseroles) eq 'HASH') &&
6306: (ref($rolecodes) eq 'ARRAY') &&
6307: (ref($groups_roles) eq 'HASH'));
6308: if (keys(%{$cdom_courseroles}) > 0) {
6309: my ($cnum) = ($rest =~ /^($match_courseid)/);
6310: if ($cdom ne '' && $cnum ne '') {
6311: foreach my $key (keys(%{$cdom_courseroles})) {
6312: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
6313: my $crsrole = $1;
6314: my $crssec = $2;
6315: if ($crsrole =~ /^cr/) {
6316: unless (grep(/^cr$/,@{$rolecodes})) {
6317: push(@{$rolecodes},'cr');
6318: }
6319: } else {
6320: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
6321: push(@{$rolecodes},$crsrole);
6322: }
6323: }
6324: my $rolekey = "$crsrole./$cdom/$cnum";
6325: if ($crssec ne '') {
6326: $rolekey .= "/$crssec";
6327: }
6328: $rolekey .= './';
6329: $groups_roles->{$rolekey} = $rolecodes;
6330: }
6331: }
6332: }
6333: }
6334: return;
6335: }
6336:
6337: sub delete_env_groupprivs {
6338: my ($where,$courseroles,$possroles) = @_;
6339: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
6340: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
6341: unless (ref($courseroles->{$udom}) eq 'HASH') {
6342: %{$courseroles->{$udom}} =
6343: &get_my_roles('','','userroles',['active'],
6344: $possroles,[$udom],1);
6345: }
6346: if (ref($courseroles->{$udom}) eq 'HASH') {
6347: foreach my $item (keys(%{$courseroles->{$udom}})) {
6348: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
6349: my $area = '/'.$cdom.'/'.$cnum;
6350: my $privkey = "user.priv.$crsrole.$area";
6351: if ($crssec ne '') {
6352: $privkey .= '/'.$crssec;
6353: }
6354: $privkey .= ".$area/$group";
6355: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
6356: }
6357: }
6358: return;
6359: }
6360:
6361: sub check_adhoc_privs {
6362: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller,$sec) = @_;
6363: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
6364: if ($sec) {
6365: $cckey .= '/'.$sec;
6366: }
6367: my $setprivs;
6368: if ($env{$cckey}) {
6369: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
6370: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
6371: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
6372: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
6373: $setprivs = 1;
6374: }
6375: } else {
6376: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
6377: $setprivs = 1;
6378: }
6379: return $setprivs;
6380: }
6381:
6382: sub set_adhoc_privileges {
6383: # role can be cc, ca, or cr/<dom>/<dom>-domainconfig/role
6384: my ($dcdom,$pickedcourse,$role,$caller,$sec) = @_;
6385: my $area = '/'.$dcdom.'/'.$pickedcourse;
6386: if ($sec ne '') {
6387: $area .= '/'.$sec;
6388: }
6389: my $spec = $role.'.'.$area;
6390: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
6391: $env{'user.name'},1);
6392: my %rolehash = ();
6393: if ($role =~ m{^\Qcr/$dcdom/$dcdom\E\-domainconfig/(\w+)$}) {
6394: my $rolename = $1;
6395: &custom_roleprivs(\%rolehash,$role,$dcdom,$pickedcourse,$spec,$area);
6396: my %domdef = &get_domain_defaults($dcdom);
6397: if (ref($domdef{'adhocroles'}) eq 'HASH') {
6398: if (ref($domdef{'adhocroles'}{$rolename}) eq 'HASH') {
6399: &appenv({'request.role.desc' => $domdef{'adhocroles'}{$rolename}{'desc'},});
6400: }
6401: }
6402: } else {
6403: &standard_roleprivs(\%rolehash,$role,$dcdom,$spec,$pickedcourse,$area);
6404: }
6405: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%rolehash);
6406: &appenv(\%userroles,[$role,'cm']);
6407: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
6408: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
6409: &appenv( {'request.role' => $spec,
6410: 'request.role.domain' => $dcdom,
6411: 'request.course.sec' => $sec,
6412: }
6413: );
6414: my $tadv=0;
6415: if (&allowed('adv') eq 'F') { $tadv=1; }
6416: &appenv({'request.role.adv' => $tadv});
6417: }
6418: }
6419:
6420: # --------------------------------------------------------------- get interface
6421:
6422: sub get {
6423: my ($namespace,$storearr,$udomain,$uname)=@_;
6424: my $items='';
6425: foreach my $item (@$storearr) {
6426: $items.=&escape($item).'&';
6427: }
6428: $items=~s/\&$//;
6429: if (!$udomain) { $udomain=$env{'user.domain'}; }
6430: if (!$uname) { $uname=$env{'user.name'}; }
6431: my $uhome=&homeserver($uname,$udomain);
6432:
6433: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
6434: my @pairs=split(/\&/,$rep);
6435: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
6436: return @pairs;
6437: }
6438: my %returnhash=();
6439: my $i=0;
6440: foreach my $item (@$storearr) {
6441: $returnhash{$item}=&thaw_unescape($pairs[$i]);
6442: $i++;
6443: }
6444: return %returnhash;
6445: }
6446:
6447: # --------------------------------------------------------------- del interface
6448:
6449: sub del {
6450: my ($namespace,$storearr,$udomain,$uname)=@_;
6451: my $items='';
6452: foreach my $item (@$storearr) {
6453: $items.=&escape($item).'&';
6454: }
6455:
6456: $items=~s/\&$//;
6457: if (!$udomain) { $udomain=$env{'user.domain'}; }
6458: if (!$uname) { $uname=$env{'user.name'}; }
6459: my $uhome=&homeserver($uname,$udomain);
6460: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
6461: }
6462:
6463: # -------------------------------------------------------------- dump interface
6464:
6465: sub unserialize {
6466: my ($rep, $escapedkeys) = @_;
6467:
6468: return {} if $rep =~ /^error/;
6469:
6470: my %returnhash=();
6471: foreach my $item (split(/\&/,$rep)) {
6472: my ($key, $value) = split(/=/, $item, 2);
6473: $key = unescape($key) unless $escapedkeys;
6474: next if $key =~ /^error: 2 /;
6475: $returnhash{$key} = &thaw_unescape($value);
6476: }
6477: #return %returnhash;
6478: return \%returnhash;
6479: }
6480:
6481: # see Lond::dump_with_regexp
6482: # if $escapedkeys hash keys won't get unescaped.
6483: sub dump {
6484: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
6485: if (!$udomain) { $udomain=$env{'user.domain'}; }
6486: if (!$uname) { $uname=$env{'user.name'}; }
6487: my $uhome=&homeserver($uname,$udomain);
6488:
6489: if ($regexp) {
6490: $regexp=&escape($regexp);
6491: } else {
6492: $regexp='.';
6493: }
6494: if (grep { $_ eq $uhome } current_machine_ids()) {
6495: # user is hosted on this machine
6496: my $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
6497: $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
6498: return %{unserialize($reply, $escapedkeys)};
6499: }
6500: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
6501: my @pairs=split(/\&/,$rep);
6502: my %returnhash=();
6503: if (!($rep =~ /^error/ )) {
6504: foreach my $item (@pairs) {
6505: my ($key,$value)=split(/=/,$item,2);
6506: $key = unescape($key) unless $escapedkeys;
6507: #$key = &unescape($key);
6508: next if ($key =~ /^error: 2 /);
6509: $returnhash{$key}=&thaw_unescape($value);
6510: }
6511: }
6512: return %returnhash;
6513: }
6514:
6515:
6516: # --------------------------------------------------------- dumpstore interface
6517:
6518: sub dumpstore {
6519: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
6520: # same as dump but keys must be escaped. They may contain colon separated
6521: # lists of values that may themself contain colons (e.g. symbs).
6522: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
6523: }
6524:
6525: # -------------------------------------------------------------- keys interface
6526:
6527: sub getkeys {
6528: my ($namespace,$udomain,$uname)=@_;
6529: if (!$udomain) { $udomain=$env{'user.domain'}; }
6530: if (!$uname) { $uname=$env{'user.name'}; }
6531: my $uhome=&homeserver($uname,$udomain);
6532: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
6533: my @keyarray=();
6534: foreach my $key (split(/\&/,$rep)) {
6535: next if ($key =~ /^error: 2 /);
6536: push(@keyarray,&unescape($key));
6537: }
6538: return @keyarray;
6539: }
6540:
6541: # --------------------------------------------------------------- currentdump
6542: sub currentdump {
6543: my ($courseid,$sdom,$sname)=@_;
6544: $courseid = $env{'request.course.id'} if (! defined($courseid));
6545: $sdom = $env{'user.domain'} if (! defined($sdom));
6546: $sname = $env{'user.name'} if (! defined($sname));
6547: my $uhome = &homeserver($sname,$sdom);
6548: my $rep;
6549:
6550: if (grep { $_ eq $uhome } current_machine_ids()) {
6551: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
6552: $courseid)));
6553: } else {
6554: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
6555: }
6556:
6557: return if ($rep =~ /^(error:|no_such_host)/);
6558: #
6559: my %returnhash=();
6560: #
6561: if ($rep eq 'unknown_cmd') {
6562: # an old lond will not know currentdump
6563: # Do a dump and make it look like a currentdump
6564: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
6565: return if ($tmp[0] =~ /^(error:|no_such_host)/);
6566: my %hash = @tmp;
6567: @tmp=();
6568: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
6569: } else {
6570: my @pairs=split(/\&/,$rep);
6571: foreach my $pair (@pairs) {
6572: my ($key,$value)=split(/=/,$pair,2);
6573: my ($symb,$param) = split(/:/,$key);
6574: $returnhash{&unescape($symb)}->{&unescape($param)} =
6575: &thaw_unescape($value);
6576: }
6577: }
6578: return %returnhash;
6579: }
6580:
6581: sub convert_dump_to_currentdump{
6582: my %hash = %{shift()};
6583: my %returnhash;
6584: # Code ripped from lond, essentially. The only difference
6585: # here is the unescaping done by lonnet::dump(). Conceivably
6586: # we might run in to problems with parameter names =~ /^v\./
6587: while (my ($key,$value) = each(%hash)) {
6588: my ($v,$symb,$param) = split(/:/,$key);
6589: $symb = &unescape($symb);
6590: $param = &unescape($param);
6591: next if ($v eq 'version' || $symb eq 'keys');
6592: next if (exists($returnhash{$symb}) &&
6593: exists($returnhash{$symb}->{$param}) &&
6594: $returnhash{$symb}->{'v.'.$param} > $v);
6595: $returnhash{$symb}->{$param}=$value;
6596: $returnhash{$symb}->{'v.'.$param}=$v;
6597: }
6598: #
6599: # Remove all of the keys in the hashes which keep track of
6600: # the version of the parameter.
6601: while (my ($symb,$param_hash) = each(%returnhash)) {
6602: # use a foreach because we are going to delete from the hash.
6603: foreach my $key (keys(%$param_hash)) {
6604: delete($param_hash->{$key}) if ($key =~ /^v\./);
6605: }
6606: }
6607: return \%returnhash;
6608: }
6609:
6610: # ------------------------------------------------------ critical inc interface
6611:
6612: sub cinc {
6613: return &inc(@_,'critical');
6614: }
6615:
6616: # --------------------------------------------------------------- inc interface
6617:
6618: sub inc {
6619: my ($namespace,$store,$udomain,$uname,$critical) = @_;
6620: if (!$udomain) { $udomain=$env{'user.domain'}; }
6621: if (!$uname) { $uname=$env{'user.name'}; }
6622: my $uhome=&homeserver($uname,$udomain);
6623: my $items='';
6624: if (! ref($store)) {
6625: # got a single value, so use that instead
6626: $items = &escape($store).'=&';
6627: } elsif (ref($store) eq 'SCALAR') {
6628: $items = &escape($$store).'=&';
6629: } elsif (ref($store) eq 'ARRAY') {
6630: $items = join('=&',map {&escape($_);} @{$store});
6631: } elsif (ref($store) eq 'HASH') {
6632: while (my($key,$value) = each(%{$store})) {
6633: $items.= &escape($key).'='.&escape($value).'&';
6634: }
6635: }
6636: $items=~s/\&$//;
6637: if ($critical) {
6638: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
6639: } else {
6640: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
6641: }
6642: }
6643:
6644: # --------------------------------------------------------------- put interface
6645:
6646: sub put {
6647: my ($namespace,$storehash,$udomain,$uname)=@_;
6648: if (!$udomain) { $udomain=$env{'user.domain'}; }
6649: if (!$uname) { $uname=$env{'user.name'}; }
6650: my $uhome=&homeserver($uname,$udomain);
6651: my $items='';
6652: foreach my $item (keys(%$storehash)) {
6653: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6654: }
6655: $items=~s/\&$//;
6656: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
6657: }
6658:
6659: # ------------------------------------------------------------ newput interface
6660:
6661: sub newput {
6662: my ($namespace,$storehash,$udomain,$uname)=@_;
6663: if (!$udomain) { $udomain=$env{'user.domain'}; }
6664: if (!$uname) { $uname=$env{'user.name'}; }
6665: my $uhome=&homeserver($uname,$udomain);
6666: my $items='';
6667: foreach my $key (keys(%$storehash)) {
6668: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6669: }
6670: $items=~s/\&$//;
6671: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
6672: }
6673:
6674: # --------------------------------------------------------- putstore interface
6675:
6676: sub putstore {
6677: my ($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog)=@_;
6678: if (!$udomain) { $udomain=$env{'user.domain'}; }
6679: if (!$uname) { $uname=$env{'user.name'}; }
6680: my $uhome=&homeserver($uname,$udomain);
6681: my $items='';
6682: foreach my $key (keys(%$storehash)) {
6683: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
6684: }
6685: $items=~s/\&$//;
6686: my $esc_symb=&escape($symb);
6687: my $esc_v=&escape($version);
6688: my $reply =
6689: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
6690: $uhome);
6691: if (($tolog) && ($reply eq 'ok')) {
6692: my $namevalue='';
6693: foreach my $key (keys(%{$storehash})) {
6694: $namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&';
6695: }
6696: $namevalue .= 'ip='.&escape($ENV{'REMOTE_ADDR'}).
6697: '&host='.&escape($perlvar{'lonHostID'}).
6698: '&version='.$esc_v.
6699: '&by='.&escape($env{'user.name'}.':'.$env{'user.domain'});
6700: &Apache::lonnet::courselog($symb.':'.$uname.':'.$udomain.':PUTSTORE:'.$namevalue);
6701: }
6702: if ($reply eq 'unknown_cmd') {
6703: # gfall back to way things use to be done
6704: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
6705: $uname);
6706: }
6707: return $reply;
6708: }
6709:
6710: sub old_putstore {
6711: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
6712: if (!$udomain) { $udomain=$env{'user.domain'}; }
6713: if (!$uname) { $uname=$env{'user.name'}; }
6714: my $uhome=&homeserver($uname,$udomain);
6715: my %newstorehash;
6716: foreach my $item (keys(%$storehash)) {
6717: my $key = $version.':'.&escape($symb).':'.$item;
6718: $newstorehash{$key} = $storehash->{$item};
6719: }
6720: my $items='';
6721: my %allitems = ();
6722: foreach my $item (keys(%newstorehash)) {
6723: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
6724: my $key = $1.':keys:'.$2;
6725: $allitems{$key} .= $3.':';
6726: }
6727: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
6728: }
6729: foreach my $item (keys(%allitems)) {
6730: $allitems{$item} =~ s/\:$//;
6731: $items.= $item.'='.$allitems{$item}.'&';
6732: }
6733: $items=~s/\&$//;
6734: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
6735: }
6736:
6737: # ------------------------------------------------------ critical put interface
6738:
6739: sub cput {
6740: my ($namespace,$storehash,$udomain,$uname)=@_;
6741: if (!$udomain) { $udomain=$env{'user.domain'}; }
6742: if (!$uname) { $uname=$env{'user.name'}; }
6743: my $uhome=&homeserver($uname,$udomain);
6744: my $items='';
6745: foreach my $item (keys(%$storehash)) {
6746: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6747: }
6748: $items=~s/\&$//;
6749: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
6750: }
6751:
6752: # -------------------------------------------------------------- eget interface
6753:
6754: sub eget {
6755: my ($namespace,$storearr,$udomain,$uname)=@_;
6756: my $items='';
6757: foreach my $item (@$storearr) {
6758: $items.=&escape($item).'&';
6759: }
6760: $items=~s/\&$//;
6761: if (!$udomain) { $udomain=$env{'user.domain'}; }
6762: if (!$uname) { $uname=$env{'user.name'}; }
6763: my $uhome=&homeserver($uname,$udomain);
6764: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
6765: my @pairs=split(/\&/,$rep);
6766: my %returnhash=();
6767: my $i=0;
6768: foreach my $item (@$storearr) {
6769: $returnhash{$item}=&thaw_unescape($pairs[$i]);
6770: $i++;
6771: }
6772: return %returnhash;
6773: }
6774:
6775: # ------------------------------------------------------------ tmpput interface
6776: sub tmpput {
6777: my ($storehash,$server,$context)=@_;
6778: my $items='';
6779: foreach my $item (keys(%$storehash)) {
6780: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6781: }
6782: $items=~s/\&$//;
6783: if (defined($context)) {
6784: $items .= ':'.&escape($context);
6785: }
6786: return &reply("tmpput:$items",$server);
6787: }
6788:
6789: # ------------------------------------------------------------ tmpget interface
6790: sub tmpget {
6791: my ($token,$server)=@_;
6792: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
6793: my $rep=&reply("tmpget:$token",$server);
6794: my %returnhash;
6795: if ($rep =~ /^(con_lost|error|no_such_host)/i) {
6796: return %returnhash;
6797: }
6798: foreach my $item (split(/\&/,$rep)) {
6799: my ($key,$value)=split(/=/,$item);
6800: $returnhash{&unescape($key)}=&thaw_unescape($value);
6801: }
6802: return %returnhash;
6803: }
6804:
6805: # ------------------------------------------------------------ tmpdel interface
6806: sub tmpdel {
6807: my ($token,$server)=@_;
6808: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
6809: return &reply("tmpdel:$token",$server);
6810: }
6811:
6812: # ------------------------------------------------------------ get_timebased_id
6813:
6814: sub get_timebased_id {
6815: my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
6816: $maxtries) = @_;
6817: my ($newid,$error,$dellock);
6818: unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
6819: return ('','ok','invalid call to get suffix');
6820: }
6821:
6822: # set defaults for any optional args for which values were not supplied
6823: if ($who eq '') {
6824: $who = $env{'user.name'}.':'.$env{'user.domain'};
6825: }
6826: if (!$locktries) {
6827: $locktries = 3;
6828: }
6829: if (!$maxtries) {
6830: $maxtries = 10;
6831: }
6832:
6833: if (($cdom eq '') || ($cnum eq '')) {
6834: if ($env{'request.course.id'}) {
6835: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6836: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6837: }
6838: if (($cdom eq '') || ($cnum eq '')) {
6839: return ('','ok','call to get suffix not in course context');
6840: }
6841: }
6842:
6843: # construct locking item
6844: my $lockhash = {
6845: $prefix."\0".'locked_'.$keyid => $who,
6846: };
6847: my $tries = 0;
6848:
6849: # attempt to get lock on nohist_$namespace file
6850: my $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
6851: while (($gotlock ne 'ok') && $tries <$locktries) {
6852: $tries ++;
6853: sleep 1;
6854: $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
6855: }
6856:
6857: # attempt to get unique identifier, based on current timestamp
6858: if ($gotlock eq 'ok') {
6859: my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
6860: my $id = time;
6861: $newid = $id;
6862: if ($idtype eq 'addcode') {
6863: $newid .= &sixnum_code();
6864: }
6865: my $idtries = 0;
6866: while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
6867: if ($idtype eq 'concat') {
6868: $newid = $id.$idtries;
6869: } elsif ($idtype eq 'addcode') {
6870: $newid = $newid.&sixnum_code();
6871: } else {
6872: $newid ++;
6873: }
6874: $idtries ++;
6875: }
6876: if (!exists($inuse{$prefix."\0".$newid})) {
6877: my %new_item = (
6878: $prefix."\0".$newid => $who,
6879: );
6880: my $putresult = &Apache::lonnet::put('nohist_'.$namespace,\%new_item,
6881: $cdom,$cnum);
6882: if ($putresult ne 'ok') {
6883: undef($newid);
6884: $error = 'error saving new item: '.$putresult;
6885: }
6886: } else {
6887: undef($newid);
6888: $error = ('error: no unique suffix available for the new item ');
6889: }
6890: # remove lock
6891: my @del_lock = ($prefix."\0".'locked_'.$keyid);
6892: $dellock = &Apache::lonnet::del('nohist_'.$namespace,\@del_lock,$cdom,$cnum);
6893: } else {
6894: $error = "error: could not obtain lockfile\n";
6895: $dellock = 'ok';
6896: if (($prefix eq 'paste') && ($namespace eq 'courseeditor') && ($keyid eq 'num')) {
6897: $dellock = 'nolock';
6898: }
6899: }
6900: return ($newid,$dellock,$error);
6901: }
6902:
6903: sub sixnum_code {
6904: my $code;
6905: for (0..6) {
6906: $code .= int( rand(9) );
6907: }
6908: return $code;
6909: }
6910:
6911: # -------------------------------------------------- portfolio access checking
6912:
6913: sub portfolio_access {
6914: my ($requrl,$clientip) = @_;
6915: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
6916: my $result = &get_portfolio_access($udom,$unum,$file_name,$group,$clientip);
6917: if ($result) {
6918: my %setters;
6919: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
6920: my ($startblock,$endblock) =
6921: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
6922: if ($startblock && $endblock) {
6923: return 'B';
6924: }
6925: } else {
6926: my ($startblock,$endblock) =
6927: &Apache::loncommon::blockcheck(\%setters,'port');
6928: if ($startblock && $endblock) {
6929: return 'B';
6930: }
6931: }
6932: }
6933: if ($result eq 'ok') {
6934: return 'F';
6935: } elsif ($result =~ /^[^:]+:guest_/) {
6936: return 'A';
6937: }
6938: return '';
6939: }
6940:
6941: sub get_portfolio_access {
6942: my ($udom,$unum,$file_name,$group,$clientip,$access_hash) = @_;
6943:
6944: if (!ref($access_hash)) {
6945: my $current_perms = &get_portfile_permissions($udom,$unum);
6946: my %access_controls = &get_access_controls($current_perms,$group,
6947: $file_name);
6948: $access_hash = $access_controls{$file_name};
6949: }
6950:
6951: my ($public,$guest,@domains,@users,@courses,@groups,@ips);
6952: my $now = time;
6953: if (ref($access_hash) eq 'HASH') {
6954: foreach my $key (keys(%{$access_hash})) {
6955: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
6956: if ($start > $now) {
6957: next;
6958: }
6959: if ($end && $end<$now) {
6960: next;
6961: }
6962: if ($scope eq 'public') {
6963: $public = $key;
6964: last;
6965: } elsif ($scope eq 'guest') {
6966: $guest = $key;
6967: } elsif ($scope eq 'domains') {
6968: push(@domains,$key);
6969: } elsif ($scope eq 'users') {
6970: push(@users,$key);
6971: } elsif ($scope eq 'course') {
6972: push(@courses,$key);
6973: } elsif ($scope eq 'group') {
6974: push(@groups,$key);
6975: } elsif ($scope eq 'ip') {
6976: push(@ips,$key);
6977: }
6978: }
6979: if ($public) {
6980: return 'ok';
6981: } elsif (@ips > 0) {
6982: my $allowed;
6983: foreach my $ipkey (@ips) {
6984: if (ref($access_hash->{$ipkey}{'ip'}) eq 'ARRAY') {
6985: if (&Apache::loncommon::check_ip_acc(join(',',@{$access_hash->{$ipkey}{'ip'}}),$clientip)) {
6986: $allowed = 1;
6987: last;
6988: }
6989: }
6990: }
6991: if ($allowed) {
6992: return 'ok';
6993: }
6994: }
6995: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
6996: if ($guest) {
6997: return $guest;
6998: }
6999: } else {
7000: if (@domains > 0) {
7001: foreach my $domkey (@domains) {
7002: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
7003: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
7004: return 'ok';
7005: }
7006: }
7007: }
7008: }
7009: if (@users > 0) {
7010: foreach my $userkey (@users) {
7011: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
7012: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
7013: if (ref($item) eq 'HASH') {
7014: if (($item->{'uname'} eq $env{'user.name'}) &&
7015: ($item->{'udom'} eq $env{'user.domain'})) {
7016: return 'ok';
7017: }
7018: }
7019: }
7020: }
7021: }
7022: }
7023: my %roleshash;
7024: my @courses_and_groups = @courses;
7025: push(@courses_and_groups,@groups);
7026: if (@courses_and_groups > 0) {
7027: my (%allgroups,%allroles);
7028: my ($start,$end,$role,$sec,$group);
7029: foreach my $envkey (%env) {
7030: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
7031: my $cid = $2.'_'.$3;
7032: if ($1 eq 'gr') {
7033: $group = $4;
7034: $allgroups{$cid}{$group} = $env{$envkey};
7035: } else {
7036: if ($4 eq '') {
7037: $sec = 'none';
7038: } else {
7039: $sec = $4;
7040: }
7041: $allroles{$cid}{$1}{$sec} = $env{$envkey};
7042: }
7043: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
7044: my $cid = $2.'_'.$3;
7045: if ($4 eq '') {
7046: $sec = 'none';
7047: } else {
7048: $sec = $4;
7049: }
7050: $allroles{$cid}{$1}{$sec} = $env{$envkey};
7051: }
7052: }
7053: if (keys(%allroles) == 0) {
7054: return;
7055: }
7056: foreach my $key (@courses_and_groups) {
7057: my %content = %{$$access_hash{$key}};
7058: my $cnum = $content{'number'};
7059: my $cdom = $content{'domain'};
7060: my $cid = $cdom.'_'.$cnum;
7061: if (!exists($allroles{$cid})) {
7062: next;
7063: }
7064: foreach my $role_id (keys(%{$content{'roles'}})) {
7065: my @sections = @{$content{'roles'}{$role_id}{'section'}};
7066: my @groups = @{$content{'roles'}{$role_id}{'group'}};
7067: my @status = @{$content{'roles'}{$role_id}{'access'}};
7068: my @roles = @{$content{'roles'}{$role_id}{'role'}};
7069: foreach my $role (keys(%{$allroles{$cid}})) {
7070: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
7071: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
7072: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
7073: if (grep/^all$/,@sections) {
7074: return 'ok';
7075: } else {
7076: if (grep/^$sec$/,@sections) {
7077: return 'ok';
7078: }
7079: }
7080: }
7081: }
7082: if (keys(%{$allgroups{$cid}}) == 0) {
7083: if (grep/^none$/,@groups) {
7084: return 'ok';
7085: }
7086: } else {
7087: if (grep/^all$/,@groups) {
7088: return 'ok';
7089: }
7090: foreach my $group (keys(%{$allgroups{$cid}})) {
7091: if (grep/^$group$/,@groups) {
7092: return 'ok';
7093: }
7094: }
7095: }
7096: }
7097: }
7098: }
7099: }
7100: }
7101: if ($guest) {
7102: return $guest;
7103: }
7104: }
7105: }
7106: return;
7107: }
7108:
7109: sub course_group_datechecker {
7110: my ($dates,$now,$status) = @_;
7111: my ($start,$end) = split(/\./,$dates);
7112: if (!$start && !$end) {
7113: return 'ok';
7114: }
7115: if (grep/^active$/,@{$status}) {
7116: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
7117: return 'ok';
7118: }
7119: }
7120: if (grep/^previous$/,@{$status}) {
7121: if ($end > $now ) {
7122: return 'ok';
7123: }
7124: }
7125: if (grep/^future$/,@{$status}) {
7126: if ($start > $now) {
7127: return 'ok';
7128: }
7129: }
7130: return;
7131: }
7132:
7133: sub parse_portfolio_url {
7134: my ($url) = @_;
7135:
7136: my ($type,$udom,$unum,$group,$file_name);
7137:
7138: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
7139: $type = 1;
7140: $udom = $1;
7141: $unum = $2;
7142: $file_name = $3;
7143: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
7144: $type = 2;
7145: $udom = $1;
7146: $unum = $2;
7147: $group = $3;
7148: $file_name = $3.'/'.$4;
7149: }
7150: if (wantarray) {
7151: return ($type,$udom,$unum,$file_name,$group);
7152: }
7153: return $type;
7154: }
7155:
7156: sub is_portfolio_url {
7157: my ($url) = @_;
7158: return scalar(&parse_portfolio_url($url));
7159: }
7160:
7161: sub is_portfolio_file {
7162: my ($file) = @_;
7163: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
7164: return 1;
7165: }
7166: return;
7167: }
7168:
7169: sub usertools_access {
7170: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
7171: my ($access,%tools);
7172: if ($context eq '') {
7173: $context = 'tools';
7174: }
7175: if ($context eq 'requestcourses') {
7176: %tools = (
7177: official => 1,
7178: unofficial => 1,
7179: community => 1,
7180: textbook => 1,
7181: placement => 1,
7182: lti => 1,
7183: );
7184: } elsif ($context eq 'requestauthor') {
7185: %tools = (
7186: requestauthor => 1,
7187: );
7188: } else {
7189: %tools = (
7190: aboutme => 1,
7191: blog => 1,
7192: webdav => 1,
7193: portfolio => 1,
7194: );
7195: }
7196: return if (!defined($tools{$tool}));
7197:
7198: if (($udom eq '') || ($uname eq '')) {
7199: $udom = $env{'user.domain'};
7200: $uname = $env{'user.name'};
7201: }
7202:
7203: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7204: if ($action ne 'reload') {
7205: if ($context eq 'requestcourses') {
7206: return $env{'environment.canrequest.'.$tool};
7207: } elsif ($context eq 'requestauthor') {
7208: return $env{'environment.canrequest.author'};
7209: } else {
7210: return $env{'environment.availabletools.'.$tool};
7211: }
7212: }
7213: }
7214:
7215: my ($toolstatus,$inststatus,$envkey);
7216: if ($context eq 'requestauthor') {
7217: $envkey = $context;
7218: } else {
7219: $envkey = $context.'.'.$tool;
7220: }
7221:
7222: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
7223: ($action ne 'reload')) {
7224: $toolstatus = $env{'environment.'.$envkey};
7225: $inststatus = $env{'environment.inststatus'};
7226: } else {
7227: if (ref($userenvref) eq 'HASH') {
7228: $toolstatus = $userenvref->{$envkey};
7229: $inststatus = $userenvref->{'inststatus'};
7230: } else {
7231: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
7232: $toolstatus = $userenv{$envkey};
7233: $inststatus = $userenv{'inststatus'};
7234: }
7235: }
7236:
7237: if ($toolstatus ne '') {
7238: if ($toolstatus) {
7239: $access = 1;
7240: } else {
7241: $access = 0;
7242: }
7243: return $access;
7244: }
7245:
7246: my ($is_adv,%domdef);
7247: if (ref($is_advref) eq 'HASH') {
7248: $is_adv = $is_advref->{'is_adv'};
7249: } else {
7250: $is_adv = &is_advanced_user($udom,$uname);
7251: }
7252: if (ref($domdefref) eq 'HASH') {
7253: %domdef = %{$domdefref};
7254: } else {
7255: %domdef = &get_domain_defaults($udom);
7256: }
7257: if (ref($domdef{$tool}) eq 'HASH') {
7258: if ($is_adv) {
7259: if ($domdef{$tool}{'_LC_adv'} ne '') {
7260: if ($domdef{$tool}{'_LC_adv'}) {
7261: $access = 1;
7262: } else {
7263: $access = 0;
7264: }
7265: return $access;
7266: }
7267: }
7268: if ($inststatus ne '') {
7269: my ($hasaccess,$hasnoaccess);
7270: foreach my $affiliation (split(/:/,$inststatus)) {
7271: if ($domdef{$tool}{$affiliation} ne '') {
7272: if ($domdef{$tool}{$affiliation}) {
7273: $hasaccess = 1;
7274: } else {
7275: $hasnoaccess = 1;
7276: }
7277: }
7278: }
7279: if ($hasaccess || $hasnoaccess) {
7280: if ($hasaccess) {
7281: $access = 1;
7282: } elsif ($hasnoaccess) {
7283: $access = 0;
7284: }
7285: return $access;
7286: }
7287: } else {
7288: if ($domdef{$tool}{'default'} ne '') {
7289: if ($domdef{$tool}{'default'}) {
7290: $access = 1;
7291: } elsif ($domdef{$tool}{'default'} == 0) {
7292: $access = 0;
7293: }
7294: return $access;
7295: }
7296: }
7297: } else {
7298: if (($context eq 'tools') && ($tool ne 'webdav')) {
7299: $access = 1;
7300: } else {
7301: $access = 0;
7302: }
7303: return $access;
7304: }
7305: }
7306:
7307: sub is_course_owner {
7308: my ($cdom,$cnum,$udom,$uname) = @_;
7309: if (($udom eq '') || ($uname eq '')) {
7310: $udom = $env{'user.domain'};
7311: $uname = $env{'user.name'};
7312: }
7313: unless (($udom eq '') || ($uname eq '')) {
7314: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
7315: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
7316: return 1;
7317: } else {
7318: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
7319: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
7320: return 1;
7321: }
7322: }
7323: }
7324: }
7325: return;
7326: }
7327:
7328: sub is_advanced_user {
7329: my ($udom,$uname) = @_;
7330: if ($udom ne '' && $uname ne '') {
7331: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7332: if (wantarray) {
7333: return ($env{'user.adv'},$env{'user.author'});
7334: } else {
7335: return $env{'user.adv'};
7336: }
7337: }
7338: }
7339: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
7340: my %allroles;
7341: my ($is_adv,$is_author);
7342: foreach my $role (keys(%roleshash)) {
7343: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
7344: my $area = '/'.$tdomain.'/'.$trest;
7345: if ($sec ne '') {
7346: $area .= '/'.$sec;
7347: }
7348: if (($area ne '') && ($trole ne '')) {
7349: my $spec=$trole.'.'.$area;
7350: if ($trole =~ /^cr\//) {
7351: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
7352: } elsif ($trole ne 'gr') {
7353: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
7354: }
7355: if ($trole eq 'au') {
7356: $is_author = 1;
7357: }
7358: }
7359: }
7360: foreach my $role (keys(%allroles)) {
7361: last if ($is_adv);
7362: foreach my $item (split(/:/,$allroles{$role})) {
7363: if ($item ne '') {
7364: my ($privilege,$restrictions)=split(/&/,$item);
7365: if ($privilege eq 'adv') {
7366: $is_adv = 1;
7367: last;
7368: }
7369: }
7370: }
7371: }
7372: if (wantarray) {
7373: return ($is_adv,$is_author);
7374: }
7375: return $is_adv;
7376: }
7377:
7378: sub check_can_request {
7379: my ($dom,$can_request,$request_domains,$uname,$udom) = @_;
7380: my $canreq = 0;
7381: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
7382: $uname = $env{'user.name'};
7383: $udom = $env{'user.domain'};
7384: }
7385: my ($types,$typename) = &Apache::loncommon::course_types();
7386: my @options = ('approval','validate','autolimit');
7387: my $optregex = join('|',@options);
7388: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
7389: foreach my $type (@{$types}) {
7390: if (&usertools_access($uname,$udom,$type,undef,
7391: 'requestcourses')) {
7392: $canreq ++;
7393: if (ref($request_domains) eq 'HASH') {
7394: push(@{$request_domains->{$type}},$udom);
7395: }
7396: if ($dom eq $udom) {
7397: $can_request->{$type} = 1;
7398: }
7399: }
7400: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '') &&
7401: ($env{'environment.reqcrsotherdom.'.$type} ne '')) {
7402: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
7403: if (@curr > 0) {
7404: foreach my $item (@curr) {
7405: if (ref($request_domains) eq 'HASH') {
7406: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
7407: if ($otherdom ne '') {
7408: if (ref($request_domains->{$type}) eq 'ARRAY') {
7409: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
7410: push(@{$request_domains->{$type}},$otherdom);
7411: }
7412: } else {
7413: push(@{$request_domains->{$type}},$otherdom);
7414: }
7415: }
7416: }
7417: }
7418: unless ($dom eq $env{'user.domain'}) {
7419: $canreq ++;
7420: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
7421: $can_request->{$type} = 1;
7422: }
7423: }
7424: }
7425: }
7426: }
7427: }
7428: return $canreq;
7429: }
7430:
7431: # ---------------------------------------------- Custom access rule evaluation
7432:
7433: sub customaccess {
7434: my ($priv,$uri)=@_;
7435: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
7436: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
7437: $udom = &LONCAPA::clean_domain($udom);
7438: $ucrs = &LONCAPA::clean_username($ucrs);
7439: my $access=0;
7440: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
7441: my ($effect,$realm,$role,$type)=split(/\:/,$right);
7442: if ($type eq 'user') {
7443: foreach my $scope (split(/\s*\,\s*/,$realm)) {
7444: my ($tdom,$tuname)=split(m{/},$scope);
7445: if ($tdom) {
7446: if ($tdom ne $env{'user.domain'}) { next; }
7447: }
7448: if ($tuname) {
7449: if ($tuname ne $env{'user.name'}) { next; }
7450: }
7451: $access=($effect eq 'allow');
7452: last;
7453: }
7454: } else {
7455: if ($role) {
7456: if ($role ne $urole) { next; }
7457: }
7458: foreach my $scope (split(/\s*\,\s*/,$realm)) {
7459: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
7460: if ($tdom) {
7461: if ($tdom ne $udom) { next; }
7462: }
7463: if ($tcrs) {
7464: if ($tcrs ne $ucrs) { next; }
7465: }
7466: if ($tsec) {
7467: if ($tsec ne $usec) { next; }
7468: }
7469: $access=($effect eq 'allow');
7470: last;
7471: }
7472: if ($realm eq '' && $role eq '') {
7473: $access=($effect eq 'allow');
7474: }
7475: }
7476: }
7477: return $access;
7478: }
7479:
7480: # ------------------------------------------------- Check for a user privilege
7481:
7482: sub allowed {
7483: my ($priv,$uri,$symb,$role,$clientip,$noblockcheck)=@_;
7484: my $ver_orguri=$uri;
7485: $uri=&deversion($uri);
7486: my $orguri=$uri;
7487: $uri=&declutter($uri);
7488:
7489: if ($priv eq 'evb') {
7490: # Evade communication block restrictions for specified role in a course
7491: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
7492: return $1;
7493: } else {
7494: return;
7495: }
7496: }
7497:
7498: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
7499: # Free bre access to adm and meta resources
7500: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard|ext\.tool)$}))
7501: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
7502: && ($priv eq 'bre')) {
7503: return 'F';
7504: }
7505:
7506: # Free bre access to user's own portfolio contents
7507: my ($space,$domain,$name,@dir)=split('/',$uri);
7508: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
7509: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
7510: my %setters;
7511: my ($startblock,$endblock) =
7512: &Apache::loncommon::blockcheck(\%setters,'port');
7513: if ($startblock && $endblock) {
7514: return 'B';
7515: } else {
7516: return 'F';
7517: }
7518: }
7519:
7520: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
7521: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
7522: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
7523: if (exists($env{'request.course.id'})) {
7524: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7525: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7526: if (($domain eq $cdom) && ($name eq $cnum)) {
7527: my $courseprivid=$env{'request.course.id'};
7528: $courseprivid=~s/\_/\//;
7529: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
7530: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
7531: return $1;
7532: } else {
7533: if ($env{'request.course.sec'}) {
7534: $courseprivid.='/'.$env{'request.course.sec'};
7535: }
7536: if ($env{'user.priv.'.$env{'request.role'}.'./'.
7537: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
7538: return $2;
7539: }
7540: }
7541: }
7542: }
7543: }
7544:
7545: # Free bre to public access
7546:
7547: if ($priv eq 'bre') {
7548: my $copyright;
7549: unless ($uri =~ /ext\.tool/) {
7550: $copyright=&metadata($uri,'copyright');
7551: }
7552: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
7553: return 'F';
7554: }
7555: if ($copyright eq 'priv') {
7556: $uri=~/([^\/]+)\/([^\/]+)\//;
7557: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
7558: return '';
7559: }
7560: }
7561: if ($copyright eq 'domain') {
7562: $uri=~/([^\/]+)\/([^\/]+)\//;
7563: unless (($env{'user.domain'} eq $1) ||
7564: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
7565: return '';
7566: }
7567: }
7568: if ($env{'request.role'}=~ /li\.\//) {
7569: # Library role, so allow browsing of resources in this domain.
7570: return 'F';
7571: }
7572: if ($copyright eq 'custom') {
7573: unless (&customaccess($priv,$uri)) { return ''; }
7574: }
7575: }
7576: # Domain coordinator is trying to create a course
7577: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
7578: # uri is the requested domain in this case.
7579: # comparison to 'request.role.domain' shows if the user has selected
7580: # a role of dc for the domain in question.
7581: return 'F' if ($uri eq $env{'request.role.domain'});
7582: }
7583:
7584: my $thisallowed='';
7585: my $statecond=0;
7586: my $courseprivid='';
7587:
7588: my $ownaccess;
7589: # Community Coordinator or Assistant Co-author browsing resource space.
7590: if (($priv eq 'bro') && ($env{'user.author'})) {
7591: if ($uri eq '') {
7592: $ownaccess = 1;
7593: } else {
7594: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
7595: my $udom = $env{'user.domain'};
7596: my $uname = $env{'user.name'};
7597: if ($uri =~ m{^\Q$udom\E/?$}) {
7598: $ownaccess = 1;
7599: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
7600: unless ($uri =~ m{\.\./}) {
7601: $ownaccess = 1;
7602: }
7603: } elsif (($udom ne 'public') && ($uname ne 'public')) {
7604: my $now = time;
7605: if ($uri =~ m{^([^/]+)/?$}) {
7606: my $adom = $1;
7607: foreach my $key (keys(%env)) {
7608: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
7609: my ($start,$end) = split('.',$env{$key});
7610: if (($now >= $start) && (!$end || $end < $now)) {
7611: $ownaccess = 1;
7612: last;
7613: }
7614: }
7615: }
7616: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
7617: my $adom = $1;
7618: my $aname = $2;
7619: foreach my $role ('ca','aa') {
7620: if ($env{"user.role.$role./$adom/$aname"}) {
7621: my ($start,$end) =
7622: split('.',$env{"user.role.$role./$adom/$aname"});
7623: if (($now >= $start) && (!$end || $end < $now)) {
7624: $ownaccess = 1;
7625: last;
7626: }
7627: }
7628: }
7629: }
7630: }
7631: }
7632: }
7633: }
7634:
7635: # Course
7636:
7637: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
7638: unless (($priv eq 'bro') && (!$ownaccess)) {
7639: $thisallowed.=$1;
7640: }
7641: }
7642:
7643: # Domain
7644:
7645: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
7646: =~/\Q$priv\E\&([^\:]*)/) {
7647: unless (($priv eq 'bro') && (!$ownaccess)) {
7648: $thisallowed.=$1;
7649: }
7650: }
7651:
7652: # User who is not author or co-author might still be able to edit
7653: # resource of an author in the domain (e.g., if Domain Coordinator).
7654: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
7655: (&allowed('mdc',$env{'request.course.id'}))) {
7656: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
7657: $thisallowed.=$1;
7658: }
7659: }
7660:
7661: # Course: uri itself is a course
7662: my $courseuri=$uri;
7663: $courseuri=~s/\_(\d)/\/$1/;
7664: $courseuri=~s/^([^\/])/\/$1/;
7665:
7666: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
7667: =~/\Q$priv\E\&([^\:]*)/) {
7668: unless (($priv eq 'bro') && (!$ownaccess)) {
7669: $thisallowed.=$1;
7670: }
7671: }
7672:
7673: # URI is an uploaded document for this course, default permissions don't matter
7674: # not allowing 'edit' access (editupload) to uploaded course docs
7675: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
7676: $thisallowed='';
7677: my ($match)=&is_on_map($uri);
7678: if ($match) {
7679: if ($env{'user.priv.'.$env{'request.role'}.'./'}
7680: =~/\Q$priv\E\&([^\:]*)/) {
7681: my $value = $1;
7682: if ($noblockcheck) {
7683: $thisallowed.=$value;
7684: } else {
7685: my @blockers = &has_comm_blocking($priv,$symb,$uri);
7686: if (@blockers > 0) {
7687: $thisallowed = 'B';
7688: } else {
7689: $thisallowed.=$value;
7690: }
7691: }
7692: }
7693: } else {
7694: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
7695: if ($refuri) {
7696: if ($refuri =~ m|^/adm/|) {
7697: $thisallowed='F';
7698: } else {
7699: $refuri=&declutter($refuri);
7700: my ($match) = &is_on_map($refuri);
7701: if ($match) {
7702: if ($noblockcheck) {
7703: $thisallowed='F';
7704: } else {
7705: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
7706: if (@blockers > 0) {
7707: $thisallowed = 'B';
7708: } else {
7709: $thisallowed='F';
7710: }
7711: }
7712: }
7713: }
7714: }
7715: }
7716: }
7717:
7718: if ($priv eq 'bre'
7719: && $thisallowed ne 'F'
7720: && $thisallowed ne '2'
7721: && &is_portfolio_url($uri)) {
7722: $thisallowed = &portfolio_access($uri,$clientip);
7723: }
7724:
7725: # Full access at system, domain or course-wide level? Exit.
7726: if ($thisallowed=~/F/) {
7727: return 'F';
7728: }
7729:
7730: # If this is generating or modifying users, exit with special codes
7731:
7732: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
7733: if (($priv eq 'cca') || ($priv eq 'caa')) {
7734: my ($audom,$auname)=split('/',$uri);
7735: # no author name given, so this just checks on the general right to make a co-author in this domain
7736: unless ($auname) { return $thisallowed; }
7737: # an author name is given, so we are about to actually make a co-author for a certain account
7738: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
7739: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
7740: ($audom ne $env{'request.role.domain'}))) { return ''; }
7741: }
7742: return $thisallowed;
7743: }
7744: #
7745: # Gathered so far: system, domain and course wide privileges
7746: #
7747: # Course: See if uri or referer is an individual resource that is part of
7748: # the course
7749:
7750: if ($env{'request.course.id'}) {
7751:
7752: $courseprivid=$env{'request.course.id'};
7753: if ($env{'request.course.sec'}) {
7754: $courseprivid.='/'.$env{'request.course.sec'};
7755: }
7756: $courseprivid=~s/\_/\//;
7757: my $checkreferer=1;
7758: my ($match,$cond)=&is_on_map($uri);
7759: if ($match) {
7760: $statecond=$cond;
7761: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
7762: =~/\Q$priv\E\&([^\:]*)/) {
7763: my $value = $1;
7764: if ($priv eq 'bre') {
7765: if ($noblockcheck) {
7766: $thisallowed.=$value;
7767: } else {
7768: my @blockers = &has_comm_blocking($priv,$symb,$uri);
7769: if (@blockers > 0) {
7770: $thisallowed = 'B';
7771: } else {
7772: $thisallowed.=$value;
7773: }
7774: }
7775: } else {
7776: $thisallowed.=$value;
7777: }
7778: $checkreferer=0;
7779: }
7780: }
7781:
7782: if ($checkreferer) {
7783: my $refuri=$env{'httpref.'.$orguri};
7784: unless ($refuri) {
7785: foreach my $key (keys(%env)) {
7786: if ($key=~/^httpref\..*\*/) {
7787: my $pattern=$key;
7788: $pattern=~s/^httpref\.\/res\///;
7789: $pattern=~s/\*/\[\^\/\]\+/g;
7790: $pattern=~s/\//\\\//g;
7791: if ($orguri=~/$pattern/) {
7792: $refuri=$env{$key};
7793: }
7794: }
7795: }
7796: }
7797:
7798: if ($refuri) {
7799: $refuri=&declutter($refuri);
7800: my ($match,$cond)=&is_on_map($refuri);
7801: if ($match) {
7802: my $refstatecond=$cond;
7803: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
7804: =~/\Q$priv\E\&([^\:]*)/) {
7805: my $value = $1;
7806: if ($priv eq 'bre') {
7807: if ($noblockcheck) {
7808: $thisallowed.=$value;
7809: } else {
7810: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
7811: if (@blockers > 0) {
7812: $thisallowed = 'B';
7813: } else {
7814: $thisallowed.=$value;
7815: }
7816: }
7817: } else {
7818: $thisallowed.=$value;
7819: }
7820: $uri=$refuri;
7821: $statecond=$refstatecond;
7822: }
7823: }
7824: }
7825: }
7826: }
7827:
7828: #
7829: # Gathered now: all privileges that could apply, and condition number
7830: #
7831: #
7832: # Full or no access?
7833: #
7834:
7835: if ($thisallowed=~/F/) {
7836: return 'F';
7837: }
7838:
7839: unless ($thisallowed) {
7840: return '';
7841: }
7842:
7843: # Restrictions exist, deal with them
7844: #
7845: # C:according to course preferences
7846: # R:according to resource settings
7847: # L:unless locked
7848: # X:according to user session state
7849: #
7850:
7851: # Possibly locked functionality, check all courses
7852: # Locks might take effect only after 10 minutes cache expiration for other
7853: # courses, and 2 minutes for current course
7854:
7855: my $envkey;
7856: if ($thisallowed=~/L/) {
7857: foreach $envkey (keys(%env)) {
7858: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
7859: my $courseid=$2;
7860: my $roleid=$1.'.'.$2;
7861: $courseid=~s/^\///;
7862: my $expiretime=600;
7863: if ($env{'request.role'} eq $roleid) {
7864: $expiretime=120;
7865: }
7866: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
7867: my $prefix='course.'.$cdom.'_'.$cnum.'.';
7868: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
7869: &coursedescription($courseid,{'freshen_cache' => 1});
7870: }
7871: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
7872: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
7873: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
7874: &log($env{'user.domain'},$env{'user.name'},
7875: $env{'user.home'},
7876: 'Locked by res: '.$priv.' for '.$uri.' due to '.
7877: $cdom.'/'.$cnum.'/'.$csec.' expire '.
7878: $env{$prefix.'priv.'.$priv.'.lock.expire'});
7879: return '';
7880: }
7881: }
7882: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
7883: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
7884: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
7885: &log($env{'user.domain'},$env{'user.name'},
7886: $env{'user.home'},
7887: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
7888: $cdom.'/'.$cnum.'/'.$csec.' expire '.
7889: $env{$prefix.'priv.'.$priv.'.lock.expire'});
7890: return '';
7891: }
7892: }
7893: }
7894: }
7895: }
7896:
7897: #
7898: # Rest of the restrictions depend on selected course
7899: #
7900:
7901: unless ($env{'request.course.id'}) {
7902: if ($thisallowed eq 'A') {
7903: return 'A';
7904: } elsif ($thisallowed eq 'B') {
7905: return 'B';
7906: } else {
7907: return '1';
7908: }
7909: }
7910:
7911: #
7912: # Now user is definitely in a course
7913: #
7914:
7915:
7916: # Course preferences
7917:
7918: if ($thisallowed=~/C/) {
7919: my $rolecode=(split(/\./,$env{'request.role'}))[0];
7920: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
7921: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
7922: =~/\Q$rolecode\E/) {
7923: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
7924: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
7925: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
7926: $env{'request.course.id'});
7927: }
7928: return '';
7929: }
7930:
7931: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
7932: =~/\Q$unamedom\E/) {
7933: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
7934: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
7935: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
7936: $env{'request.course.id'});
7937: }
7938: return '';
7939: }
7940: }
7941:
7942: # Resource preferences
7943:
7944: if ($thisallowed=~/R/) {
7945: my $rolecode=(split(/\./,$env{'request.role'}))[0];
7946: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
7947: if (($priv ne 'pch') && ($priv ne 'plc')) {
7948: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
7949: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
7950: }
7951: return '';
7952: }
7953: }
7954:
7955: # Restricted by state or randomout?
7956:
7957: if ($thisallowed=~/X/) {
7958: if ($env{'acc.randomout'}) {
7959: if (!$symb) { $symb=&symbread($uri,1); }
7960: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
7961: return '';
7962: }
7963: }
7964: if (&condval($statecond)) {
7965: return '2';
7966: } else {
7967: return '';
7968: }
7969: }
7970:
7971: if ($thisallowed eq 'A') {
7972: return 'A';
7973: } elsif ($thisallowed eq 'B') {
7974: return 'B';
7975: }
7976: return 'F';
7977: }
7978:
7979: # ------------------------------------------- Check construction space access
7980:
7981: sub constructaccess {
7982: my ($url,$setpriv)=@_;
7983:
7984: # We do not allow editing of previous versions of files
7985: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
7986:
7987: # Get username and domain from URL
7988: my ($ownername,$ownerdomain,$ownerhome);
7989:
7990: ($ownerdomain,$ownername) =
7991: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)(?:/daxepage|/daxeopen)?/priv/($match_domain)/($match_username)(?:/|$)});
7992:
7993: # The URL does not really point to any authorspace, forget it
7994: unless (($ownername) && ($ownerdomain)) { return ''; }
7995:
7996: # Now we need to see if the user has access to the authorspace of
7997: # $ownername at $ownerdomain
7998:
7999: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
8000: # Real author for this?
8001: $ownerhome = $env{'user.home'};
8002: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
8003: return ($ownername,$ownerdomain,$ownerhome);
8004: }
8005: } else {
8006: # Co-author for this?
8007: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
8008: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
8009: $ownerhome = &homeserver($ownername,$ownerdomain);
8010: return ($ownername,$ownerdomain,$ownerhome);
8011: }
8012: if ($env{'request.course.id'}) {
8013: if (($ownername eq $env{'course.'.$env{'request.course.id'}.'.num'}) &&
8014: ($ownerdomain eq $env{'course.'.$env{'request.course.id'}.'.domain'})) {
8015: if (&allowed('mdc',$env{'request.course.id'})) {
8016: $ownerhome = $env{'course.'.$env{'request.course.id'}.'.home'};
8017: return ($ownername,$ownerdomain,$ownerhome);
8018: }
8019: }
8020: }
8021: }
8022:
8023: # We don't have any access right now. If we are not possibly going to do anything about this,
8024: # we might as well leave
8025: unless ($setpriv) { return ''; }
8026:
8027: # Backdoor access?
8028: my $allowed=&allowed('eco',$ownerdomain);
8029: # Nope
8030: unless ($allowed) { return ''; }
8031: # Looks like we may have access, but could be locked by the owner of the construction space
8032: if ($allowed eq 'U') {
8033: my %blocked=&get('environment',['domcoord.author'],
8034: $ownerdomain,$ownername);
8035: # Is blocked by owner
8036: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
8037: }
8038: if (($allowed eq 'F') || ($allowed eq 'U')) {
8039: # Grant temporary access
8040: my $then=$env{'user.login.time'};
8041: my $update=$env{'user.update.time'};
8042: if (!$update) { $update = $then; }
8043: my $refresh=$env{'user.refresh.time'};
8044: if (!$refresh) { $refresh = $update; }
8045: my $now = time;
8046: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
8047: $now,'ca','constructaccess');
8048: $ownerhome = &homeserver($ownername,$ownerdomain);
8049: return($ownername,$ownerdomain,$ownerhome);
8050: }
8051: # No business here
8052: return '';
8053: }
8054:
8055: # ----------------------------------------------------------- Content Blocking
8056:
8057: {
8058: # Caches for faster Course Contents display where content blocking
8059: # is in operation (i.e., interval param set) for timed quiz.
8060: #
8061: # User for whom data are being temporarily cached.
8062: my $cacheduser='';
8063: # Cached blockers for this user (a hash of blocking items).
8064: my %cachedblockers=();
8065: # When the data were last cached.
8066: my $cachedlast='';
8067:
8068: sub load_all_blockers {
8069: my ($uname,$udom,$blocks)=@_;
8070: if (($uname ne '') && ($udom ne '')) {
8071: if (($cacheduser eq $uname.':'.$udom) &&
8072: (abs($cachedlast-time)<5)) {
8073: return;
8074: }
8075: }
8076: $cachedlast=time;
8077: $cacheduser=$uname.':'.$udom;
8078: %cachedblockers = &get_commblock_resources($blocks);
8079: }
8080:
8081: sub get_comm_blocks {
8082: my ($cdom,$cnum) = @_;
8083: if ($cdom eq '' || $cnum eq '') {
8084: return unless ($env{'request.course.id'});
8085: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
8086: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8087: }
8088: my %commblocks;
8089: my $hashid=$cdom.'_'.$cnum;
8090: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
8091: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
8092: %commblocks = %{$blocksref};
8093: } else {
8094: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
8095: my $cachetime = 600;
8096: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
8097: }
8098: return %commblocks;
8099: }
8100:
8101: sub get_commblock_resources {
8102: my ($blocks) = @_;
8103: my %blockers = ();
8104: return %blockers unless ($env{'request.course.id'});
8105: return %blockers if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
8106: my %commblocks;
8107: if (ref($blocks) eq 'HASH') {
8108: %commblocks = %{$blocks};
8109: } else {
8110: %commblocks = &get_comm_blocks();
8111: }
8112: return %blockers unless (keys(%commblocks) > 0);
8113: my $navmap = Apache::lonnavmaps::navmap->new();
8114: return %blockers unless (ref($navmap));
8115: my $now = time;
8116: foreach my $block (keys(%commblocks)) {
8117: if ($block =~ /^(\d+)____(\d+)$/) {
8118: my ($start,$end) = ($1,$2);
8119: if ($start <= $now && $end >= $now) {
8120: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
8121: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
8122: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
8123: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
8124: $blockers{$block}{maps} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
8125: }
8126: }
8127: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
8128: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
8129: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
8130: }
8131: }
8132: }
8133: }
8134: }
8135: } elsif ($block =~ /^firstaccess____(.+)$/) {
8136: my $item = $1;
8137: my @to_test;
8138: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
8139: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
8140: my @interval;
8141: my $type = 'map';
8142: if ($item eq 'course') {
8143: $type = 'course';
8144: @interval=&EXT("resource.0.interval");
8145: } else {
8146: if ($item =~ /___\d+___/) {
8147: $type = 'resource';
8148: @interval=&EXT("resource.0.interval",$item);
8149: if (ref($navmap)) {
8150: my $res = $navmap->getBySymb($item);
8151: push(@to_test,$res);
8152: }
8153: } else {
8154: my $mapsymb = &symbread($item,1);
8155: if ($mapsymb) {
8156: if (ref($navmap)) {
8157: my $mapres = $navmap->getBySymb($mapsymb);
8158: @to_test = $mapres->retrieveResources($mapres,undef,0,0,0,1);
8159: foreach my $res (@to_test) {
8160: my $symb = $res->symb();
8161: next if ($symb eq $mapsymb);
8162: if ($symb ne '') {
8163: @interval=&EXT("resource.0.interval",$symb);
8164: if ($interval[1] eq 'map') {
8165: last;
8166: }
8167: }
8168: }
8169: }
8170: }
8171: }
8172: }
8173: if ($interval[0] =~ /^(\d+)/) {
8174: my $timelimit = $1;
8175: my $first_access;
8176: if ($type eq 'resource') {
8177: $first_access=&get_first_access($interval[1],$item);
8178: } elsif ($type eq 'map') {
8179: $first_access=&get_first_access($interval[1],undef,$item);
8180: } else {
8181: $first_access=&get_first_access($interval[1]);
8182: }
8183: if ($first_access) {
8184: my $timesup = $first_access+$timelimit;
8185: if ($timesup > $now) {
8186: my $activeblock;
8187: foreach my $res (@to_test) {
8188: if ($res->answerable()) {
8189: $activeblock = 1;
8190: last;
8191: }
8192: }
8193: if ($activeblock) {
8194: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
8195: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
8196: $blockers{$block}{'maps'} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
8197: }
8198: }
8199: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
8200: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
8201: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
8202: }
8203: }
8204: }
8205: }
8206: }
8207: }
8208: }
8209: }
8210: }
8211: }
8212: return %blockers;
8213: }
8214:
8215: sub has_comm_blocking {
8216: my ($priv,$symb,$uri,$blocks) = @_;
8217: my @blockers;
8218: return unless ($env{'request.course.id'});
8219: return unless ($priv eq 'bre');
8220: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
8221: return if ($env{'request.state'} eq 'construct');
8222: &load_all_blockers($env{'user.name'},$env{'user.domain'},$blocks);
8223: return unless (keys(%cachedblockers) > 0);
8224: my (%possibles,@symbs);
8225: if (!$symb) {
8226: $symb = &symbread($uri,1,1,1,\%possibles);
8227: }
8228: if ($symb) {
8229: @symbs = ($symb);
8230: } elsif (keys(%possibles)) {
8231: @symbs = keys(%possibles);
8232: }
8233: my $noblock;
8234: foreach my $symb (@symbs) {
8235: last if ($noblock);
8236: my ($map,$resid,$resurl)=&decode_symb($symb);
8237: foreach my $block (keys(%cachedblockers)) {
8238: if ($block =~ /^firstaccess____(.+)$/) {
8239: my $item = $1;
8240: if (($item eq $map) || ($item eq $symb)) {
8241: $noblock = 1;
8242: last;
8243: }
8244: }
8245: if (ref($cachedblockers{$block}) eq 'HASH') {
8246: if (ref($cachedblockers{$block}{'resources'}) eq 'HASH') {
8247: if ($cachedblockers{$block}{'resources'}{$symb}) {
8248: unless (grep(/^\Q$block\E$/,@blockers)) {
8249: push(@blockers,$block);
8250: }
8251: }
8252: }
8253: }
8254: if (ref($cachedblockers{$block}{'maps'}) eq 'HASH') {
8255: if ($cachedblockers{$block}{'maps'}{$map}) {
8256: unless (grep(/^\Q$block\E$/,@blockers)) {
8257: push(@blockers,$block);
8258: }
8259: }
8260: }
8261: }
8262: }
8263: return if ($noblock);
8264: return @blockers;
8265: }
8266: }
8267:
8268: # -------------------------------- Deversion and split uri into path an filename
8269:
8270: #
8271: # Removes the version from a URI and
8272: # splits it in to its filename and path to the filename.
8273: # Seems like File::Basename could have done this more clearly.
8274: # Parameters:
8275: # $uri - input URI
8276: # Returns:
8277: # Two element list consisting of
8278: # $pathname - the URI up to and excluding the trailing /
8279: # $filename - The part of the URI following the last /
8280: # NOTE:
8281: # Another realization of this is simply:
8282: # use File::Basename;
8283: # ...
8284: # $uri = shift;
8285: # $filename = basename($uri);
8286: # $path = dirname($uri);
8287: # return ($filename, $path);
8288: #
8289: # The implementation below is probably faster however.
8290: #
8291: sub split_uri_for_cond {
8292: my $uri=&deversion(&declutter(shift));
8293: my @uriparts=split(/\//,$uri);
8294: my $filename=pop(@uriparts);
8295: my $pathname=join('/',@uriparts);
8296: return ($pathname,$filename);
8297: }
8298: # --------------------------------------------------- Is a resource on the map?
8299:
8300: sub is_on_map {
8301: my ($pathname,$filename) = &split_uri_for_cond(shift);
8302: #Trying to find the conditional for the file
8303: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
8304: /\&\Q$filename\E\:([\d\|]+)\&/);
8305: if ($match) {
8306: return (1,$1);
8307: } else {
8308: return (0,0);
8309: }
8310: }
8311:
8312: # --------------------------------------------------------- Get symb from alias
8313:
8314: sub get_symb_from_alias {
8315: my $symb=shift;
8316: my ($map,$resid,$url)=&decode_symb($symb);
8317: # Already is a symb
8318: if ($url) { return $symb; }
8319: # Must be an alias
8320: my $aliassymb='';
8321: my %bighash;
8322: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8323: &GDBM_READER(),0640)) {
8324: my $rid=$bighash{'mapalias_'.$symb};
8325: if ($rid) {
8326: my ($mapid,$resid)=split(/\./,$rid);
8327: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
8328: $resid,$bighash{'src_'.$rid});
8329: }
8330: untie %bighash;
8331: }
8332: return $aliassymb;
8333: }
8334:
8335: # ----------------------------------------------------------------- Define Role
8336:
8337: sub definerole {
8338: if (allowed('mcr','/')) {
8339: my ($rolename,$sysrole,$domrole,$courole,$uname,$udom)=@_;
8340: foreach my $role (split(':',$sysrole)) {
8341: my ($crole,$cqual)=split(/\&/,$role);
8342: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
8343: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
8344: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
8345: return "refused:s:$crole&$cqual";
8346: }
8347: }
8348: }
8349: foreach my $role (split(':',$domrole)) {
8350: my ($crole,$cqual)=split(/\&/,$role);
8351: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
8352: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
8353: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
8354: return "refused:d:$crole&$cqual";
8355: }
8356: }
8357: }
8358: foreach my $role (split(':',$courole)) {
8359: my ($crole,$cqual)=split(/\&/,$role);
8360: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
8361: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
8362: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
8363: return "refused:c:$crole&$cqual";
8364: }
8365: }
8366: }
8367: my $uhome;
8368: if (($uname ne '') && ($udom ne '')) {
8369: $uhome = &homeserver($uname,$udom);
8370: return $uhome if ($uhome eq 'no_host');
8371: } else {
8372: $uname = $env{'user.name'};
8373: $udom = $env{'user.domain'};
8374: $uhome = $env{'user.home'};
8375: }
8376: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
8377: "$udom:$uname:rolesdef_$rolename=".
8378: escape($sysrole.'_'.$domrole.'_'.$courole);
8379: return reply($command,$uhome);
8380: } else {
8381: return 'refused';
8382: }
8383: }
8384:
8385: # ---------------- Make a metadata query against the network of library servers
8386:
8387: sub metadata_query {
8388: my ($query,$custom,$customshow,$server_array,$domains_hash)=@_;
8389: my %rhash;
8390: my %libserv = &all_library();
8391: my @server_list = (defined($server_array) ? @$server_array
8392: : keys(%libserv) );
8393: for my $server (@server_list) {
8394: my $domains = '';
8395: if (ref($domains_hash) eq 'HASH') {
8396: $domains = $domains_hash->{$server};
8397: }
8398: unless ($custom or $customshow) {
8399: my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server);
8400: $rhash{$server}=$reply;
8401: }
8402: else {
8403: my $reply=&reply("querysend:".&escape($query).':'.
8404: &escape($custom).':'.&escape($customshow).':'.&escape($domains),
8405: $server);
8406: $rhash{$server}=$reply;
8407: }
8408: }
8409: return \%rhash;
8410: }
8411:
8412: # ----------------------------------------- Send log queries and wait for reply
8413:
8414: sub log_query {
8415: my ($uname,$udom,$query,%filters)=@_;
8416: my $uhome=&homeserver($uname,$udom);
8417: if ($uhome eq 'no_host') { return 'error: no_host'; }
8418: my $uhost=&hostname($uhome);
8419: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
8420: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
8421: $uhome);
8422: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
8423: return get_query_reply($queryid);
8424: }
8425:
8426: # -------------------------- Update MySQL table for portfolio file
8427:
8428: sub update_portfolio_table {
8429: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
8430: if ($group ne '') {
8431: $file_name =~s /^\Q$group\E//;
8432: }
8433: my $homeserver = &homeserver($uname,$udom);
8434: my $queryid=
8435: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
8436: ':'.&escape($file_name).':'.$action,$homeserver);
8437: my $reply = &get_query_reply($queryid);
8438: return $reply;
8439: }
8440:
8441: # -------------------------- Update MySQL allusers table
8442:
8443: sub update_allusers_table {
8444: my ($uname,$udom,$names) = @_;
8445: my $homeserver = &homeserver($uname,$udom);
8446: my $queryid=
8447: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
8448: 'lastname='.&escape($names->{'lastname'}).'%%'.
8449: 'firstname='.&escape($names->{'firstname'}).'%%'.
8450: 'middlename='.&escape($names->{'middlename'}).'%%'.
8451: 'generation='.&escape($names->{'generation'}).'%%'.
8452: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
8453: 'id='.&escape($names->{'id'}),$homeserver);
8454: return;
8455: }
8456:
8457: # ------- Request retrieval of institutional classlists for course(s)
8458:
8459: sub fetch_enrollment_query {
8460: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
8461: my ($homeserver,$sleep,$loopmax);
8462: my $maxtries = 1;
8463: if ($context eq 'automated') {
8464: $homeserver = $perlvar{'lonHostID'};
8465: $sleep = 2;
8466: $loopmax = 100;
8467: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
8468: } else {
8469: $homeserver = &homeserver($cnum,$dom);
8470: }
8471: my $host=&hostname($homeserver);
8472: my $cmd = '';
8473: foreach my $affiliate (keys(%{$affiliatesref})) {
8474: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
8475: }
8476: $cmd =~ s/%%$//;
8477: $cmd = &escape($cmd);
8478: my $query = 'fetchenrollment';
8479: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
8480: unless ($queryid=~/^\Q$host\E\_/) {
8481: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
8482: return 'error: '.$queryid;
8483: }
8484: my $reply = &get_query_reply($queryid,$sleep,$loopmax);
8485: my $tries = 1;
8486: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
8487: $reply = &get_query_reply($queryid,$sleep,$loopmax);
8488: $tries ++;
8489: }
8490: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
8491: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
8492: } else {
8493: my @responses = split(/:/,$reply);
8494: if (grep { $_ eq $homeserver } ¤t_machine_ids()) {
8495: foreach my $line (@responses) {
8496: my ($key,$value) = split(/=/,$line,2);
8497: $$replyref{$key} = $value;
8498: }
8499: } else {
8500: my $pathname = LONCAPA::tempdir();
8501: foreach my $line (@responses) {
8502: my ($key,$value) = split(/=/,$line);
8503: $$replyref{$key} = $value;
8504: if ($value > 0) {
8505: foreach my $item (@{$$affiliatesref{$key}}) {
8506: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
8507: my $destname = $pathname.'/'.$filename;
8508: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
8509: if ($xml_classlist =~ /^error/) {
8510: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
8511: } else {
8512: if ( open(FILE,">",$destname) ) {
8513: print FILE &unescape($xml_classlist);
8514: close(FILE);
8515: } else {
8516: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
8517: }
8518: }
8519: }
8520: }
8521: }
8522: }
8523: return 'ok';
8524: }
8525: return 'error';
8526: }
8527:
8528: sub get_query_reply {
8529: my ($queryid,$sleep,$loopmax) = @_;;
8530: if (($sleep eq '') || ($sleep !~ /^\d+\.?\d*$/)) {
8531: $sleep = 0.2;
8532: }
8533: if (($loopmax eq '') || ($loopmax =~ /\D/)) {
8534: $loopmax = 100;
8535: }
8536: my $replyfile=LONCAPA::tempdir().$queryid;
8537: my $reply='';
8538: for (1..$loopmax) {
8539: sleep($sleep);
8540: if (-e $replyfile.'.end') {
8541: if (open(my $fh,"<",$replyfile)) {
8542: $reply = join('',<$fh>);
8543: close($fh);
8544: } else { return 'error: reply_file_error'; }
8545: return &unescape($reply);
8546: }
8547: }
8548: return 'timeout:'.$queryid;
8549: }
8550:
8551: sub courselog_query {
8552: #
8553: # possible filters:
8554: # url: url or symb
8555: # username
8556: # domain
8557: # action: view, submit, grade
8558: # start: timestamp
8559: # end: timestamp
8560: #
8561: my (%filters)=@_;
8562: unless ($env{'request.course.id'}) { return 'no_course'; }
8563: if ($filters{'url'}) {
8564: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
8565: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
8566: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
8567: }
8568: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
8569: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
8570: return &log_query($cname,$cdom,'courselog',%filters);
8571: }
8572:
8573: sub userlog_query {
8574: #
8575: # possible filters:
8576: # action: log check role
8577: # start: timestamp
8578: # end: timestamp
8579: #
8580: my ($uname,$udom,%filters)=@_;
8581: return &log_query($uname,$udom,'userlog',%filters);
8582: }
8583:
8584: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
8585:
8586: sub auto_run {
8587: my ($cnum,$cdom) = @_;
8588: my $response = 0;
8589: my $settings;
8590: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
8591: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
8592: $settings = $domconfig{'autoenroll'};
8593: if ($settings->{'run'} eq '1') {
8594: $response = 1;
8595: }
8596: } else {
8597: my $homeserver;
8598: if (&is_course($cdom,$cnum)) {
8599: $homeserver = &homeserver($cnum,$cdom);
8600: } else {
8601: $homeserver = &domain($cdom,'primary');
8602: }
8603: if ($homeserver ne 'no_host') {
8604: $response = &reply('autorun:'.$cdom,$homeserver);
8605: }
8606: }
8607: return $response;
8608: }
8609:
8610: sub auto_get_sections {
8611: my ($cnum,$cdom,$inst_coursecode) = @_;
8612: my $homeserver;
8613: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
8614: $homeserver = &homeserver($cnum,$cdom);
8615: }
8616: if (!defined($homeserver)) {
8617: if ($cdom =~ /^$match_domain$/) {
8618: $homeserver = &domain($cdom,'primary');
8619: }
8620: }
8621: my @secs;
8622: if (defined($homeserver)) {
8623: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
8624: unless ($response eq 'refused') {
8625: @secs = split(/:/,$response);
8626: }
8627: }
8628: return @secs;
8629: }
8630:
8631: sub auto_new_course {
8632: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
8633: my $homeserver = &homeserver($cnum,$cdom);
8634: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
8635: return $response;
8636: }
8637:
8638: sub auto_validate_courseID {
8639: my ($cnum,$cdom,$inst_course_id) = @_;
8640: my $homeserver = &homeserver($cnum,$cdom);
8641: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
8642: return $response;
8643: }
8644:
8645: sub auto_validate_instcode {
8646: my ($cnum,$cdom,$instcode,$owner) = @_;
8647: my ($homeserver,$response);
8648: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
8649: $homeserver = &homeserver($cnum,$cdom);
8650: }
8651: if (!defined($homeserver)) {
8652: if ($cdom =~ /^$match_domain$/) {
8653: $homeserver = &domain($cdom,'primary');
8654: }
8655: }
8656: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
8657: &escape($instcode).':'.&escape($owner),$homeserver));
8658: my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
8659: return ($outcome,$description,$defaultcredits);
8660: }
8661:
8662: sub auto_create_password {
8663: my ($cnum,$cdom,$authparam,$udom) = @_;
8664: my ($homeserver,$response);
8665: my $create_passwd = 0;
8666: my $authchk = '';
8667: if ($udom =~ /^$match_domain$/) {
8668: $homeserver = &domain($udom,'primary');
8669: }
8670: if ($homeserver eq '') {
8671: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
8672: $homeserver = &homeserver($cnum,$cdom);
8673: }
8674: }
8675: if ($homeserver eq '') {
8676: $authchk = 'nodomain';
8677: } else {
8678: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
8679: if ($response eq 'refused') {
8680: $authchk = 'refused';
8681: } else {
8682: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
8683: }
8684: }
8685: return ($authparam,$create_passwd,$authchk);
8686: }
8687:
8688: sub auto_photo_permission {
8689: my ($cnum,$cdom,$students) = @_;
8690: my $homeserver = &homeserver($cnum,$cdom);
8691: my ($outcome,$perm_reqd,$conditions) =
8692: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
8693: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8694: return (undef,undef);
8695: }
8696: return ($outcome,$perm_reqd,$conditions);
8697: }
8698:
8699: sub auto_checkphotos {
8700: my ($uname,$udom,$pid) = @_;
8701: my $homeserver = &homeserver($uname,$udom);
8702: my ($result,$resulttype);
8703: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
8704: &escape($uname).':'.&escape($pid),
8705: $homeserver));
8706: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8707: return (undef,undef);
8708: }
8709: if ($outcome) {
8710: ($result,$resulttype) = split(/:/,$outcome);
8711: }
8712: return ($result,$resulttype);
8713: }
8714:
8715: sub auto_photochoice {
8716: my ($cnum,$cdom) = @_;
8717: my $homeserver = &homeserver($cnum,$cdom);
8718: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
8719: &escape($cdom),
8720: $homeserver)));
8721: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8722: return (undef,undef);
8723: }
8724: return ($update,$comment);
8725: }
8726:
8727: sub auto_photoupdate {
8728: my ($affiliatesref,$dom,$cnum,$photo) = @_;
8729: my $homeserver = &homeserver($cnum,$dom);
8730: my $host=&hostname($homeserver);
8731: my $cmd = '';
8732: my $maxtries = 1;
8733: foreach my $affiliate (keys(%{$affiliatesref})) {
8734: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
8735: }
8736: $cmd =~ s/%%$//;
8737: $cmd = &escape($cmd);
8738: my $query = 'institutionalphotos';
8739: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
8740: unless ($queryid=~/^\Q$host\E\_/) {
8741: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
8742: return 'error: '.$queryid;
8743: }
8744: my $reply = &get_query_reply($queryid);
8745: my $tries = 1;
8746: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
8747: $reply = &get_query_reply($queryid);
8748: $tries ++;
8749: }
8750: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
8751: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
8752: } else {
8753: my @responses = split(/:/,$reply);
8754: my $outcome = shift(@responses);
8755: foreach my $item (@responses) {
8756: my ($key,$value) = split(/=/,$item);
8757: $$photo{$key} = $value;
8758: }
8759: return $outcome;
8760: }
8761: return 'error';
8762: }
8763:
8764: sub auto_instcode_format {
8765: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
8766: $cat_order) = @_;
8767: my $courses = '';
8768: my @homeservers;
8769: if ($caller eq 'global') {
8770: my %servers = &get_servers($codedom,'library');
8771: foreach my $tryserver (keys(%servers)) {
8772: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8773: push(@homeservers,$tryserver);
8774: }
8775: }
8776: } elsif ($caller eq 'requests') {
8777: if ($codedom =~ /^$match_domain$/) {
8778: my $chome = &domain($codedom,'primary');
8779: unless ($chome eq 'no_host') {
8780: push(@homeservers,$chome);
8781: }
8782: }
8783: } else {
8784: push(@homeservers,&homeserver($caller,$codedom));
8785: }
8786: foreach my $code (keys(%{$instcodes})) {
8787: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
8788: }
8789: chop($courses);
8790: my $ok_response = 0;
8791: my $response;
8792: while (@homeservers > 0 && $ok_response == 0) {
8793: my $server = shift(@homeservers);
8794: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
8795: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
8796: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
8797: split(/:/,$response);
8798: %{$codes} = (%{$codes},&str2hash($codes_str));
8799: push(@{$codetitles},&str2array($codetitles_str));
8800: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
8801: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
8802: $ok_response = 1;
8803: }
8804: }
8805: if ($ok_response) {
8806: return 'ok';
8807: } else {
8808: return $response;
8809: }
8810: }
8811:
8812: sub auto_instcode_defaults {
8813: my ($domain,$returnhash,$code_order) = @_;
8814: my @homeservers;
8815:
8816: my %servers = &get_servers($domain,'library');
8817: foreach my $tryserver (keys(%servers)) {
8818: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8819: push(@homeservers,$tryserver);
8820: }
8821: }
8822:
8823: my $response;
8824: foreach my $server (@homeservers) {
8825: $response=&reply('autoinstcodedefaults:'.$domain,$server);
8826: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
8827:
8828: foreach my $pair (split(/\&/,$response)) {
8829: my ($name,$value)=split(/\=/,$pair);
8830: if ($name eq 'code_order') {
8831: @{$code_order} = split(/\&/,&unescape($value));
8832: } else {
8833: $returnhash->{&unescape($name)}=&unescape($value);
8834: }
8835: }
8836: return 'ok';
8837: }
8838:
8839: return $response;
8840: }
8841:
8842: sub auto_possible_instcodes {
8843: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
8844: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
8845: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
8846: return;
8847: }
8848: my (@homeservers,$uhome);
8849: if (defined(&domain($domain,'primary'))) {
8850: $uhome=&domain($domain,'primary');
8851: push(@homeservers,&domain($domain,'primary'));
8852: } else {
8853: my %servers = &get_servers($domain,'library');
8854: foreach my $tryserver (keys(%servers)) {
8855: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8856: push(@homeservers,$tryserver);
8857: }
8858: }
8859: }
8860: my $response;
8861: foreach my $server (@homeservers) {
8862: $response=&reply('autopossibleinstcodes:'.$domain,$server);
8863: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
8864: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
8865: split(':',$response);
8866: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
8867: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
8868: foreach my $item (split('&',$cat_title)) {
8869: my ($name,$value)=split('=',$item);
8870: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
8871: }
8872: foreach my $item (split('&',$cat_order)) {
8873: my ($name,$value)=split('=',$item);
8874: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
8875: }
8876: return 'ok';
8877: }
8878: return $response;
8879: }
8880:
8881: sub auto_courserequest_checks {
8882: my ($dom) = @_;
8883: my ($homeserver,%validations);
8884: if ($dom =~ /^$match_domain$/) {
8885: $homeserver = &domain($dom,'primary');
8886: }
8887: unless ($homeserver eq 'no_host') {
8888: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
8889: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
8890: my @items = split(/&/,$response);
8891: foreach my $item (@items) {
8892: my ($key,$value) = split('=',$item);
8893: $validations{&unescape($key)} = &thaw_unescape($value);
8894: }
8895: }
8896: }
8897: return %validations;
8898: }
8899:
8900: sub auto_courserequest_validation {
8901: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$custominfo) = @_;
8902: my ($homeserver,$response);
8903: if ($dom =~ /^$match_domain$/) {
8904: $homeserver = &domain($dom,'primary');
8905: }
8906: unless ($homeserver eq 'no_host') {
8907: my $customdata;
8908: if (ref($custominfo) eq 'HASH') {
8909: $customdata = &freeze_escape($custominfo);
8910: }
8911: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
8912: ':'.&escape($crstype).':'.&escape($inststatuslist).
8913: ':'.&escape($instcode).':'.&escape($instseclist).':'.
8914: $customdata,$homeserver));
8915: }
8916: return $response;
8917: }
8918:
8919: sub auto_validate_class_sec {
8920: my ($cdom,$cnum,$owners,$inst_class) = @_;
8921: my $homeserver = &homeserver($cnum,$cdom);
8922: my $ownerlist;
8923: if (ref($owners) eq 'ARRAY') {
8924: $ownerlist = join(',',@{$owners});
8925: } else {
8926: $ownerlist = $owners;
8927: }
8928: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
8929: &escape($ownerlist).':'.$cdom,$homeserver);
8930: return $response;
8931: }
8932:
8933: sub auto_validate_instclasses {
8934: my ($cdom,$cnum,$owners,$classesref) = @_;
8935: my ($homeserver,%validations);
8936: $homeserver = &homeserver($cnum,$cdom);
8937: unless ($homeserver eq 'no_host') {
8938: my $ownerlist;
8939: if (ref($owners) eq 'ARRAY') {
8940: $ownerlist = join(',',@{$owners});
8941: } else {
8942: $ownerlist = $owners;
8943: }
8944: if (ref($classesref) eq 'HASH') {
8945: my $classes = &freeze_escape($classesref);
8946: my $response=&reply('autovalidateinstclasses:'.&escape($ownerlist).
8947: ':'.$cdom.':'.$classes,$homeserver);
8948: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
8949: my @items = split(/&/,$response);
8950: foreach my $item (@items) {
8951: my ($key,$value) = split('=',$item);
8952: $validations{&unescape($key)} = &thaw_unescape($value);
8953: }
8954: }
8955: }
8956: }
8957: return %validations;
8958: }
8959:
8960: sub auto_crsreq_update {
8961: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,
8962: $code,$accessstart,$accessend,$inbound) = @_;
8963: my ($homeserver,%crsreqresponse);
8964: if ($cdom =~ /^$match_domain$/) {
8965: $homeserver = &domain($cdom,'primary');
8966: }
8967: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
8968: my $info;
8969: if (ref($inbound) eq 'HASH') {
8970: $info = &freeze_escape($inbound);
8971: }
8972: my $response=&reply('autocrsrequpdate:'.$cdom.':'.$cnum.':'.&escape($crstype).
8973: ':'.&escape($action).':'.&escape($ownername).':'.
8974: &escape($ownerdomain).':'.&escape($fullname).':'.
8975: &escape($title).':'.&escape($code).':'.
8976: &escape($accessstart).':'.&escape($accessend).':'.$info,
8977: $homeserver);
8978: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
8979: my @items = split(/&/,$response);
8980: foreach my $item (@items) {
8981: my ($key,$value) = split('=',$item);
8982: $crsreqresponse{&unescape($key)} = &thaw_unescape($value);
8983: }
8984: }
8985: }
8986: return \%crsreqresponse;
8987: }
8988:
8989: sub auto_export_grades {
8990: my ($cdom,$cnum,$inforef,$gradesref) = @_;
8991: my ($homeserver,%exportresponse);
8992: if ($cdom =~ /^$match_domain$/) {
8993: $homeserver = &domain($cdom,'primary');
8994: }
8995: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
8996: my $info;
8997: if (ref($inforef) eq 'HASH') {
8998: $info = &freeze_escape($inforef);
8999: }
9000: if (ref($gradesref) eq 'HASH') {
9001: my $grades = &freeze_escape($gradesref);
9002: my $response=&reply('encrypt:autoexportgrades:'.$cdom.':'.$cnum.':'.
9003: $info.':'.$grades,$homeserver);
9004: unless ($response =~ /(con_lost|error|no_such_host|refused|unknown_command)/) {
9005: my @items = split(/&/,$response);
9006: foreach my $item (@items) {
9007: my ($key,$value) = split('=',$item);
9008: $exportresponse{&unescape($key)} = &thaw_unescape($value);
9009: }
9010: }
9011: }
9012: }
9013: return \%exportresponse;
9014: }
9015:
9016: sub check_instcode_cloning {
9017: my ($codedefaults,$code_order,$cloner,$clonefromcode,$clonetocode) = @_;
9018: unless ((ref($codedefaults) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
9019: return;
9020: }
9021: my $canclone;
9022: if (@{$code_order} > 0) {
9023: my $instcoderegexp ='^';
9024: my @clonecodes = split(/\&/,$cloner);
9025: foreach my $item (@{$code_order}) {
9026: if (grep(/^\Q$item\E=/,@clonecodes)) {
9027: foreach my $pair (@clonecodes) {
9028: my ($key,$val) = split(/\=/,$pair,2);
9029: $val = &unescape($val);
9030: if ($key eq $item) {
9031: $instcoderegexp .= '('.$val.')';
9032: last;
9033: }
9034: }
9035: } else {
9036: $instcoderegexp .= $codedefaults->{$item};
9037: }
9038: }
9039: $instcoderegexp .= '$';
9040: my (@from,@to);
9041: eval {
9042: (@from) = ($clonefromcode =~ /$instcoderegexp/);
9043: (@to) = ($clonetocode =~ /$instcoderegexp/);
9044: };
9045: if ((@from > 0) && (@to > 0)) {
9046: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
9047: if (!@diffs) {
9048: $canclone = 1;
9049: }
9050: }
9051: }
9052: return $canclone;
9053: }
9054:
9055: sub default_instcode_cloning {
9056: my ($clonedom,$domdefclone,$clonefromcode,$clonetocode,$codedefaultsref,$codeorderref) = @_;
9057: my (%codedefaults,@code_order,$canclone);
9058: if ((ref($codedefaultsref) eq 'HASH') && (ref($codeorderref) eq 'ARRAY')) {
9059: %codedefaults = %{$codedefaultsref};
9060: @code_order = @{$codeorderref};
9061: } elsif ($clonedom) {
9062: &auto_instcode_defaults($clonedom,\%codedefaults,\@code_order);
9063: }
9064: if (($domdefclone) && (@code_order)) {
9065: my @clonecodes = split(/\+/,$domdefclone);
9066: my $instcoderegexp ='^';
9067: foreach my $item (@code_order) {
9068: if (grep(/^\Q$item\E$/,@clonecodes)) {
9069: $instcoderegexp .= '('.$codedefaults{$item}.')';
9070: } else {
9071: $instcoderegexp .= $codedefaults{$item};
9072: }
9073: }
9074: $instcoderegexp .= '$';
9075: my (@from,@to);
9076: eval {
9077: (@from) = ($clonefromcode =~ /$instcoderegexp/);
9078: (@to) = ($clonetocode =~ /$instcoderegexp/);
9079: };
9080: if ((@from > 0) && (@to > 0)) {
9081: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
9082: if (!@diffs) {
9083: $canclone = 1;
9084: }
9085: }
9086: }
9087: return $canclone;
9088: }
9089:
9090: # ------------------------------------------------------- Course Group routines
9091:
9092: sub get_coursegroups {
9093: my ($cdom,$cnum,$group,$namespace) = @_;
9094: return(&dump($namespace,$cdom,$cnum,$group));
9095: }
9096:
9097: sub modify_coursegroup {
9098: my ($cdom,$cnum,$groupsettings) = @_;
9099: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
9100: }
9101:
9102: sub toggle_coursegroup_status {
9103: my ($cdom,$cnum,$group,$action) = @_;
9104: my ($from_namespace,$to_namespace);
9105: if ($action eq 'delete') {
9106: $from_namespace = 'coursegroups';
9107: $to_namespace = 'deleted_groups';
9108: } else {
9109: $from_namespace = 'deleted_groups';
9110: $to_namespace = 'coursegroups';
9111: }
9112: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
9113: if (my $tmp = &error(%curr_group)) {
9114: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
9115: return ('read error',$tmp);
9116: } else {
9117: my %savedsettings = %curr_group;
9118: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
9119: my $deloutcome;
9120: if ($result eq 'ok') {
9121: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
9122: } else {
9123: return ('write error',$result);
9124: }
9125: if ($deloutcome eq 'ok') {
9126: return 'ok';
9127: } else {
9128: return ('delete error',$deloutcome);
9129: }
9130: }
9131: }
9132:
9133: sub modify_group_roles {
9134: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
9135: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
9136: my $role = 'gr/'.&escape($userprivs);
9137: my ($uname,$udom) = split(/:/,$user);
9138: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
9139: if ($result eq 'ok') {
9140: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
9141: }
9142: return $result;
9143: }
9144:
9145: sub modify_coursegroup_membership {
9146: my ($cdom,$cnum,$membership) = @_;
9147: my $result = &put('groupmembership',$membership,$cdom,$cnum);
9148: return $result;
9149: }
9150:
9151: sub get_active_groups {
9152: my ($udom,$uname,$cdom,$cnum) = @_;
9153: my $now = time;
9154: my %groups = ();
9155: foreach my $key (keys(%env)) {
9156: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
9157: my ($start,$end) = split(/\./,$env{$key});
9158: if (($end!=0) && ($end<$now)) { next; }
9159: if (($start!=0) && ($start>$now)) { next; }
9160: if ($1 eq $cdom && $2 eq $cnum) {
9161: $groups{$3} = $env{$key} ;
9162: }
9163: }
9164: }
9165: return %groups;
9166: }
9167:
9168: sub get_group_membership {
9169: my ($cdom,$cnum,$group) = @_;
9170: return(&dump('groupmembership',$cdom,$cnum,$group));
9171: }
9172:
9173: sub get_users_groups {
9174: my ($udom,$uname,$courseid) = @_;
9175: my @usersgroups;
9176: my $cachetime=1800;
9177:
9178: my $hashid="$udom:$uname:$courseid";
9179: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
9180: if (defined($cached)) {
9181: @usersgroups = split(/:/,$grouplist);
9182: } else {
9183: $grouplist = '';
9184: my $courseurl = &courseid_to_courseurl($courseid);
9185: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
9186: my $access_end = $env{'course.'.$courseid.
9187: '.default_enrollment_end_date'};
9188: my $now = time;
9189: foreach my $key (keys(%roleshash)) {
9190: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
9191: my $group = $1;
9192: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
9193: my $start = $2;
9194: my $end = $1;
9195: if ($start == -1) { next; } # deleted from group
9196: if (($start!=0) && ($start>$now)) { next; }
9197: if (($end!=0) && ($end<$now)) {
9198: if ($access_end && $access_end < $now) {
9199: if ($access_end - $end < 86400) {
9200: push(@usersgroups,$group);
9201: }
9202: }
9203: next;
9204: }
9205: push(@usersgroups,$group);
9206: }
9207: }
9208: }
9209: @usersgroups = &sort_course_groups($courseid,@usersgroups);
9210: $grouplist = join(':',@usersgroups);
9211: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
9212: }
9213: return @usersgroups;
9214: }
9215:
9216: sub devalidate_getgroups_cache {
9217: my ($udom,$uname,$cdom,$cnum)=@_;
9218: my $courseid = $cdom.'_'.$cnum;
9219:
9220: my $hashid="$udom:$uname:$courseid";
9221: &devalidate_cache_new('getgroups',$hashid);
9222: }
9223:
9224: # ------------------------------------------------------------------ Plain Text
9225:
9226: sub plaintext {
9227: my ($short,$type,$cid,$forcedefault) = @_;
9228: if ($short =~ m{^cr/}) {
9229: return (split('/',$short))[-1];
9230: }
9231: if (!defined($cid)) {
9232: $cid = $env{'request.course.id'};
9233: }
9234: my %rolenames = (
9235: Course => 'std',
9236: Community => 'alt1',
9237: Placement => 'std',
9238: );
9239: if ($cid ne '') {
9240: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
9241: unless ($forcedefault) {
9242: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
9243: &Apache::lonlocal::mt_escape(\$roletext);
9244: return &Apache::lonlocal::mt($roletext);
9245: }
9246: }
9247: }
9248: if ((defined($type)) && (defined($rolenames{$type})) &&
9249: (defined($rolenames{$type})) &&
9250: (defined($prp{$short}{$rolenames{$type}}))) {
9251: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
9252: } elsif ($cid ne '') {
9253: my $crstype = $env{'course.'.$cid.'.type'};
9254: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
9255: (defined($prp{$short}{$rolenames{$crstype}}))) {
9256: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
9257: }
9258: }
9259: return &Apache::lonlocal::mt($prp{$short}{'std'});
9260: }
9261:
9262: # ----------------------------------------------------------------- Assign Role
9263:
9264: sub assignrole {
9265: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
9266: $context)=@_;
9267: my $mrole;
9268: if ($role =~ /^cr\//) {
9269: my $cwosec=$url;
9270: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
9271: unless (&allowed('ccr',$cwosec)) {
9272: my $refused = 1;
9273: if ($context eq 'requestcourses') {
9274: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
9275: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
9276: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
9277: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
9278: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9279: if ($crsenv{'internal.courseowner'} eq
9280: $env{'user.name'}.':'.$env{'user.domain'}) {
9281: $refused = '';
9282: }
9283: }
9284: }
9285: }
9286: }
9287: if ($refused) {
9288: &logthis('Refused custom assignrole: '.
9289: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
9290: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
9291: return 'refused';
9292: }
9293: }
9294: $mrole='cr';
9295: } elsif ($role =~ /^gr\//) {
9296: my $cwogrp=$url;
9297: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
9298: unless (&allowed('mdg',$cwogrp)) {
9299: &logthis('Refused group assignrole: '.
9300: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
9301: $env{'user.name'}.' at '.$env{'user.domain'});
9302: return 'refused';
9303: }
9304: $mrole='gr';
9305: } else {
9306: my $cwosec=$url;
9307: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
9308: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
9309: my $refused;
9310: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
9311: if (!(&allowed('c'.$role,$url))) {
9312: $refused = 1;
9313: }
9314: } else {
9315: $refused = 1;
9316: }
9317: if ($refused) {
9318: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
9319: if (!$selfenroll && (($context eq 'course') || ($context eq 'ltienroll' && $env{'request.lti.login'}))) {
9320: my %crsenv;
9321: if ($role eq 'cc' || $role eq 'co') {
9322: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9323: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
9324: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
9325: if ($crsenv{'internal.courseowner'} eq
9326: $env{'user.name'}.':'.$env{'user.domain'}) {
9327: $refused = '';
9328: }
9329: }
9330: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
9331: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
9332: if ($crsenv{'internal.courseowner'} eq
9333: $env{'user.name'}.':'.$env{'user.domain'}) {
9334: $refused = '';
9335: }
9336: }
9337: }
9338: }
9339: } elsif (($selfenroll == 1) && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
9340: if ($role eq 'st') {
9341: $refused = '';
9342: } elsif (($context eq 'ltienroll') && ($env{'request.lti.login'})) {
9343: $refused = '';
9344: }
9345: } elsif ($context eq 'requestcourses') {
9346: my @possroles = ('st','ta','ep','in','cc','co');
9347: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
9348: my $wrongcc;
9349: if ($cnum =~ /^$match_community$/) {
9350: $wrongcc = 1 if ($role eq 'cc');
9351: } else {
9352: $wrongcc = 1 if ($role eq 'co');
9353: }
9354: unless ($wrongcc) {
9355: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9356: if ($crsenv{'internal.courseowner'} eq
9357: $env{'user.name'}.':'.$env{'user.domain'}) {
9358: $refused = '';
9359: }
9360: }
9361: }
9362: } elsif ($context eq 'requestauthor') {
9363: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
9364: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
9365: if ($env{'environment.requestauthor'} eq 'automatic') {
9366: $refused = '';
9367: } else {
9368: my %domdefaults = &get_domain_defaults($udom);
9369: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
9370: my $checkbystatus;
9371: if ($env{'user.adv'}) {
9372: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
9373: if ($disposition eq 'automatic') {
9374: $refused = '';
9375: } elsif ($disposition eq '') {
9376: $checkbystatus = 1;
9377: }
9378: } else {
9379: $checkbystatus = 1;
9380: }
9381: if ($checkbystatus) {
9382: if ($env{'environment.inststatus'}) {
9383: my @inststatuses = split(/,/,$env{'environment.inststatus'});
9384: foreach my $type (@inststatuses) {
9385: if (($type ne '') &&
9386: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
9387: $refused = '';
9388: }
9389: }
9390: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
9391: $refused = '';
9392: }
9393: }
9394: }
9395: }
9396: }
9397: }
9398: if ($refused) {
9399: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
9400: ' '.$role.' '.$end.' '.$start.' by '.
9401: $env{'user.name'}.' at '.$env{'user.domain'});
9402: return 'refused';
9403: }
9404: }
9405: } elsif ($role eq 'au') {
9406: if ($url ne '/'.$udom.'/') {
9407: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
9408: ' to assign author role for '.$uname.':'.$udom.
9409: ' in domain: '.$url.' refused (wrong domain).');
9410: return 'refused';
9411: }
9412: }
9413: $mrole=$role;
9414: }
9415: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
9416: "$udom:$uname:$url".'_'."$mrole=$role";
9417: if ($end) { $command.='_'.$end; }
9418: if ($start) {
9419: if ($end) {
9420: $command.='_'.$start;
9421: } else {
9422: $command.='_0_'.$start;
9423: }
9424: }
9425: my $origstart = $start;
9426: my $origend = $end;
9427: my $delflag;
9428: # actually delete
9429: if ($deleteflag) {
9430: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
9431: # modify command to delete the role
9432: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
9433: "$udom:$uname:$url".'_'."$mrole";
9434: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
9435: # set start and finish to negative values for userrolelog
9436: $start=-1;
9437: $end=-1;
9438: $delflag = 1;
9439: }
9440: }
9441: # send command
9442: my $answer=&reply($command,&homeserver($uname,$udom));
9443: # log new user role if status is ok
9444: if ($answer eq 'ok') {
9445: &userrolelog($role,$uname,$udom,$url,$start,$end);
9446: if (($role eq 'cc') || ($role eq 'in') ||
9447: ($role eq 'ep') || ($role eq 'ad') ||
9448: ($role eq 'ta') || ($role eq 'st') ||
9449: ($role=~/^cr/) || ($role eq 'gr') ||
9450: ($role eq 'co')) {
9451: # for course roles, perform group memberships changes triggered by role change.
9452: unless ($role =~ /^gr/) {
9453: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
9454: $origstart,$selfenroll,$context);
9455: }
9456: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
9457: $selfenroll,$context);
9458: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
9459: ($role eq 'au') || ($role eq 'dc') || ($role eq 'dh') ||
9460: ($role eq 'da')) {
9461: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
9462: $context);
9463: } elsif (($role eq 'ca') || ($role eq 'aa')) {
9464: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
9465: $context);
9466: }
9467: if ($role eq 'cc') {
9468: &autoupdate_coowners($url,$end,$start,$uname,$udom);
9469: }
9470: }
9471: return $answer;
9472: }
9473:
9474: sub autoupdate_coowners {
9475: my ($url,$end,$start,$uname,$udom) = @_;
9476: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
9477: if (($cdom ne '') && ($cnum ne '')) {
9478: my $now = time;
9479: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
9480: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
9481: my %coursehash = &coursedescription($cdom.'_'.$cnum);
9482: my $instcode = $coursehash{'internal.coursecode'};
9483: if ($instcode ne '') {
9484: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
9485: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
9486: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
9487: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
9488: if ($result eq 'valid') {
9489: if ($coursehash{'internal.co-owners'}) {
9490: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
9491: push(@newcoowners,$coowner);
9492: }
9493: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
9494: push(@newcoowners,$uname.':'.$udom);
9495: }
9496: @newcoowners = sort(@newcoowners);
9497: } else {
9498: push(@newcoowners,$uname.':'.$udom);
9499: }
9500: } else {
9501: if ($coursehash{'internal.co-owners'}) {
9502: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
9503: unless ($coowner eq $uname.':'.$udom) {
9504: push(@newcoowners,$coowner);
9505: }
9506: }
9507: unless (@newcoowners > 0) {
9508: $delcoowners = 1;
9509: $coowners = '';
9510: }
9511: }
9512: }
9513: if (@newcoowners || $delcoowners) {
9514: &store_coowners($cdom,$cnum,$coursehash{'home'},
9515: $delcoowners,@newcoowners);
9516: }
9517: }
9518: }
9519: }
9520: }
9521: }
9522: }
9523:
9524: sub store_coowners {
9525: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
9526: my $cid = $cdom.'_'.$cnum;
9527: my ($coowners,$delresult,$putresult);
9528: if (@newcoowners) {
9529: $coowners = join(',',@newcoowners);
9530: my %coownershash = (
9531: 'internal.co-owners' => $coowners,
9532: );
9533: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
9534: if ($putresult eq 'ok') {
9535: if ($env{'course.'.$cid.'.num'} eq $cnum) {
9536: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
9537: }
9538: }
9539: }
9540: if ($delcoowners) {
9541: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
9542: if ($delresult eq 'ok') {
9543: if ($env{'course.'.$cid.'.internal.co-owners'}) {
9544: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
9545: }
9546: }
9547: }
9548: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
9549: my %crsinfo =
9550: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
9551: if (ref($crsinfo{$cid}) eq 'HASH') {
9552: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
9553: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
9554: }
9555: }
9556: }
9557:
9558: # -------------------------------------------------- Modify user authentication
9559: # Overrides without validation
9560:
9561: sub modifyuserauth {
9562: my ($udom,$uname,$umode,$upass)=@_;
9563: my $uhome=&homeserver($uname,$udom);
9564: unless (&allowed('mau',$udom)) { return 'refused'; }
9565: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
9566: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
9567: ' in domain '.$env{'request.role.domain'});
9568: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
9569: &escape($upass),$uhome);
9570: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
9571: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
9572: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
9573: &log($udom,,$uname,$uhome,
9574: 'Authentication changed by '.$env{'user.domain'}.', '.
9575: $env{'user.name'}.', '.$umode.
9576: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
9577: unless ($reply eq 'ok') {
9578: &logthis('Authentication mode error: '.$reply);
9579: return 'error: '.$reply;
9580: }
9581: return 'ok';
9582: }
9583:
9584: # --------------------------------------------------------------- Modify a user
9585:
9586: sub modifyuser {
9587: my ($udom, $uname, $uid,
9588: $umode, $upass, $first,
9589: $middle, $last, $gene,
9590: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
9591: $udom= &LONCAPA::clean_domain($udom);
9592: $uname=&LONCAPA::clean_username($uname);
9593: my $showcandelete = 'none';
9594: if (ref($candelete) eq 'ARRAY') {
9595: if (@{$candelete} > 0) {
9596: $showcandelete = join(', ',@{$candelete});
9597: }
9598: }
9599: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
9600: $umode.', '.$first.', '.$middle.', '.
9601: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
9602: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
9603: ' desiredhome not specified').
9604: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
9605: ' in domain '.$env{'request.role.domain'});
9606: my $uhome=&homeserver($uname,$udom,'true');
9607: my $newuser;
9608: if ($uhome eq 'no_host') {
9609: $newuser = 1;
9610: unless (($umode && ($upass ne '')) || ($umode eq 'localauth') ||
9611: ($umode eq 'lti')) {
9612: return 'error: more information needed to create new user';
9613: }
9614: }
9615: # ----------------------------------------------------------------- Create User
9616: if (($uhome eq 'no_host') &&
9617: (($umode && $upass) || ($umode eq 'localauth') || ($umode eq 'lti'))) {
9618: my $unhome='';
9619: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
9620: $unhome = $desiredhome;
9621: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
9622: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
9623: } else { # load balancing routine for determining $unhome
9624: my $loadm=10000000;
9625: my %servers = &get_servers($udom,'library');
9626: foreach my $tryserver (keys(%servers)) {
9627: my $answer=reply('load',$tryserver);
9628: if (($answer=~/\d+/) && ($answer<$loadm)) {
9629: $loadm=$answer;
9630: $unhome=$tryserver;
9631: }
9632: }
9633: }
9634: if (($unhome eq '') || ($unhome eq 'no_host')) {
9635: return 'error: unable to find a home server for '.$uname.
9636: ' in domain '.$udom;
9637: }
9638: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
9639: &escape($upass),$unhome);
9640: unless ($reply eq 'ok') {
9641: return 'error: '.$reply;
9642: }
9643: $uhome=&homeserver($uname,$udom,'true');
9644: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
9645: return 'error: unable verify users home machine.';
9646: }
9647: } # End of creation of new user
9648: # ---------------------------------------------------------------------- Add ID
9649: if ($uid) {
9650: $uid=~tr/A-Z/a-z/;
9651: my %uidhash=&idrget($udom,$uname);
9652: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
9653: && (!$forceid)) {
9654: unless ($uid eq $uidhash{$uname}) {
9655: return 'error: user id "'.$uid.'" does not match '.
9656: 'current user id "'.$uidhash{$uname}.'".';
9657: }
9658: } else {
9659: &idput($udom,{$uname => $uid},$uhome,'ids');
9660: }
9661: }
9662: # -------------------------------------------------------------- Add names, etc
9663: my @tmp=&get('environment',
9664: ['firstname','middlename','lastname','generation','id',
9665: 'permanentemail','inststatus'],
9666: $udom,$uname);
9667: my (%names,%oldnames);
9668: if ($tmp[0] =~ m/^error:.*/) {
9669: %names=();
9670: } else {
9671: %names = @tmp;
9672: %oldnames = %names;
9673: }
9674: #
9675: # If name, email and/or uid are blank (e.g., because an uploaded file
9676: # of users did not contain them), do not overwrite existing values
9677: # unless field is in $candelete array ref.
9678: #
9679:
9680: my @fields = ('firstname','middlename','lastname','generation',
9681: 'permanentemail','id');
9682: my %newvalues;
9683: if (ref($candelete) eq 'ARRAY') {
9684: foreach my $field (@fields) {
9685: if (grep(/^\Q$field\E$/,@{$candelete})) {
9686: if ($field eq 'firstname') {
9687: $names{$field} = $first;
9688: } elsif ($field eq 'middlename') {
9689: $names{$field} = $middle;
9690: } elsif ($field eq 'lastname') {
9691: $names{$field} = $last;
9692: } elsif ($field eq 'generation') {
9693: $names{$field} = $gene;
9694: } elsif ($field eq 'permanentemail') {
9695: $names{$field} = $email;
9696: } elsif ($field eq 'id') {
9697: $names{$field} = $uid;
9698: }
9699: }
9700: }
9701: }
9702: if ($first) { $names{'firstname'} = $first; }
9703: if (defined($middle)) { $names{'middlename'} = $middle; }
9704: if ($last) { $names{'lastname'} = $last; }
9705: if (defined($gene)) { $names{'generation'} = $gene; }
9706: if ($email) {
9707: $email=~s/[^\w\@\.\-\,]//gs;
9708: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
9709: }
9710: if ($uid) { $names{'id'} = $uid; }
9711: if (defined($inststatus)) {
9712: $names{'inststatus'} = '';
9713: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
9714: if (ref($usertypes) eq 'HASH') {
9715: my @okstatuses;
9716: foreach my $item (split(/:/,$inststatus)) {
9717: if (defined($usertypes->{$item})) {
9718: push(@okstatuses,$item);
9719: }
9720: }
9721: if (@okstatuses) {
9722: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
9723: }
9724: }
9725: }
9726: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
9727: $umode.', '.$first.', '.$middle.', '.
9728: $last.', '.$gene.', '.$email.', '.$inststatus;
9729: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
9730: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
9731: } else {
9732: $logmsg .= ' during self creation';
9733: }
9734: my $changed;
9735: if ($newuser) {
9736: $changed = 1;
9737: } else {
9738: foreach my $field (@fields) {
9739: if ($names{$field} ne $oldnames{$field}) {
9740: $changed = 1;
9741: last;
9742: }
9743: }
9744: }
9745: unless ($changed) {
9746: $logmsg = 'No changes in user information needed for: '.$logmsg;
9747: &logthis($logmsg);
9748: return 'ok';
9749: }
9750: my $reply = &put('environment', \%names, $udom,$uname);
9751: if ($reply ne 'ok') {
9752: return 'error: '.$reply;
9753: }
9754: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
9755: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
9756: }
9757: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
9758: &devalidate_cache_new('namescache',$uname.':'.$udom);
9759: $logmsg = 'Success modifying user '.$logmsg;
9760: &logthis($logmsg);
9761: return 'ok';
9762: }
9763:
9764: # -------------------------------------------------------------- Modify student
9765:
9766: sub modifystudent {
9767: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
9768: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
9769: $selfenroll,$context,$inststatus,$credits,$instsec)=@_;
9770: if (!$cid) {
9771: unless ($cid=$env{'request.course.id'}) {
9772: return 'not_in_class';
9773: }
9774: }
9775: # --------------------------------------------------------------- Make the user
9776: my $reply=&modifyuser
9777: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
9778: $desiredhome,$email,$inststatus);
9779: unless ($reply eq 'ok') { return $reply; }
9780: # This will cause &modify_student_enrollment to get the uid from the
9781: # student's environment
9782: $uid = undef if (!$forceid);
9783: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
9784: $gene,$usec,$end,$start,$type,$locktype,
9785: $cid,$selfenroll,$context,$credits,$instsec);
9786: return $reply;
9787: }
9788:
9789: sub modify_student_enrollment {
9790: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
9791: $locktype,$cid,$selfenroll,$context,$credits,$instsec) = @_;
9792: my ($cdom,$cnum,$chome);
9793: if (!$cid) {
9794: unless ($cid=$env{'request.course.id'}) {
9795: return 'not_in_class';
9796: }
9797: $cdom=$env{'course.'.$cid.'.domain'};
9798: $cnum=$env{'course.'.$cid.'.num'};
9799: } else {
9800: ($cdom,$cnum)=split(/_/,$cid);
9801: }
9802: $chome=$env{'course.'.$cid.'.home'};
9803: if (!$chome) {
9804: $chome=&homeserver($cnum,$cdom);
9805: }
9806: if (!$chome) { return 'unknown_course'; }
9807: # Make sure the user exists
9808: my $uhome=&homeserver($uname,$udom);
9809: if (($uhome eq '') || ($uhome eq 'no_host')) {
9810: return 'error: no such user';
9811: }
9812: # Get student data if we were not given enough information
9813: if (!defined($first) || $first eq '' ||
9814: !defined($last) || $last eq '' ||
9815: !defined($uid) || $uid eq '' ||
9816: !defined($middle) || $middle eq '' ||
9817: !defined($gene) || $gene eq '') {
9818: # They did not supply us with enough data to enroll the student, so
9819: # we need to pick up more information.
9820: my %tmp = &get('environment',
9821: ['firstname','middlename','lastname', 'generation','id']
9822: ,$udom,$uname);
9823:
9824: #foreach my $key (keys(%tmp)) {
9825: # &logthis("key $key = ".$tmp{$key});
9826: #}
9827: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
9828: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
9829: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
9830: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
9831: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
9832: }
9833: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
9834: my $user = "$uname:$udom";
9835: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
9836: my $reply=cput('classlist',
9837: {$user =>
9838: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits,$instsec) },
9839: $cdom,$cnum);
9840: if (($reply eq 'ok') || ($reply eq 'delayed')) {
9841: &devalidate_getsection_cache($udom,$uname,$cid);
9842: } else {
9843: return 'error: '.$reply;
9844: }
9845: # Add student role to user
9846: my $uurl='/'.$cid;
9847: $uurl=~s/\_/\//g;
9848: if ($usec) {
9849: $uurl.='/'.$usec;
9850: }
9851: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
9852: $selfenroll,$context);
9853: if ($result ne 'ok') {
9854: if ($old_entry{$user} ne '') {
9855: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
9856: } else {
9857: $reply = &del('classlist',[$user],$cdom,$cnum);
9858: }
9859: }
9860: return $result;
9861: }
9862:
9863: sub format_name {
9864: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
9865: my $name;
9866: if ($first ne 'lastname') {
9867: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
9868: } else {
9869: if ($lastname=~/\S/) {
9870: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
9871: $name=~s/\s+,/,/;
9872: } else {
9873: $name.= $firstname.' '.$middlename.' '.$generation;
9874: }
9875: }
9876: $name=~s/^\s+//;
9877: $name=~s/\s+$//;
9878: $name=~s/\s+/ /g;
9879: return $name;
9880: }
9881:
9882: # ------------------------------------------------- Write to course preferences
9883:
9884: sub writecoursepref {
9885: my ($courseid,%prefs)=@_;
9886: $courseid=~s/^\///;
9887: $courseid=~s/\_/\//g;
9888: my ($cdomain,$cnum)=split(/\//,$courseid);
9889: my $chome=homeserver($cnum,$cdomain);
9890: if (($chome eq '') || ($chome eq 'no_host')) {
9891: return 'error: no such course';
9892: }
9893: my $cstring='';
9894: foreach my $pref (keys(%prefs)) {
9895: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
9896: }
9897: $cstring=~s/\&$//;
9898: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
9899: }
9900:
9901: # ---------------------------------------------------------- Make/modify course
9902:
9903: sub createcourse {
9904: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
9905: $course_owner,$crstype,$cnum,$context,$category)=@_;
9906: $url=&declutter($url);
9907: my $cid='';
9908: if ($context eq 'requestcourses') {
9909: my $can_create = 0;
9910: my ($ownername,$ownerdom) = split(':',$course_owner);
9911: if ($udom eq $ownerdom) {
9912: if (&usertools_access($ownername,$ownerdom,$category,undef,
9913: $context)) {
9914: $can_create = 1;
9915: }
9916: } else {
9917: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
9918: $category);
9919: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
9920: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
9921: if (@curr > 0) {
9922: my @options = qw(approval validate autolimit);
9923: my $optregex = join('|',@options);
9924: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
9925: $can_create = 1;
9926: }
9927: }
9928: }
9929: }
9930: if ($can_create) {
9931: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
9932: unless (&allowed('ccc',$udom)) {
9933: return 'refused';
9934: }
9935: }
9936: } else {
9937: return 'refused';
9938: }
9939: } elsif (!&allowed('ccc',$udom)) {
9940: return 'refused';
9941: }
9942: # --------------------------------------------------------------- Get Unique ID
9943: my $uname;
9944: if ($cnum =~ /^$match_courseid$/) {
9945: my $chome=&homeserver($cnum,$udom,'true');
9946: if (($chome eq '') || ($chome eq 'no_host')) {
9947: $uname = $cnum;
9948: } else {
9949: $uname = &generate_coursenum($udom,$crstype);
9950: }
9951: } else {
9952: $uname = &generate_coursenum($udom,$crstype);
9953: }
9954: return $uname if ($uname =~ /^error/);
9955: # -------------------------------------------------- Check supplied server name
9956: if (!defined($course_server)) {
9957: if (defined(&domain($udom,'primary'))) {
9958: $course_server = &domain($udom,'primary');
9959: } else {
9960: $course_server = $env{'user.home'};
9961: }
9962: }
9963: my %host_servers =
9964: &Apache::lonnet::get_servers($udom,'library');
9965: unless ($host_servers{$course_server}) {
9966: return 'error: invalid home server for course: '.$course_server;
9967: }
9968: # ------------------------------------------------------------- Make the course
9969: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
9970: $course_server);
9971: unless ($reply eq 'ok') { return 'error: '.$reply; }
9972: my $uhome=&homeserver($uname,$udom,'true');
9973: if (($uhome eq '') || ($uhome eq 'no_host')) {
9974: return 'error: no such course';
9975: }
9976: # ----------------------------------------------------------------- Course made
9977: # log existence
9978: my $now = time;
9979: my $newcourse = {
9980: $udom.'_'.$uname => {
9981: description => $description,
9982: inst_code => $inst_code,
9983: owner => $course_owner,
9984: type => $crstype,
9985: creator => $env{'user.name'}.':'.
9986: $env{'user.domain'},
9987: created => $now,
9988: context => $context,
9989: },
9990: };
9991: &courseidput($udom,$newcourse,$uhome,'notime');
9992: # set toplevel url
9993: my $topurl=$url;
9994: unless ($nonstandard) {
9995: # ------------------------------------------ For standard courses, make top url
9996: my $mapurl=&clutter($url);
9997: if ($mapurl eq '/res/') { $mapurl=''; }
9998: $env{'form.initmap'}=(<<ENDINITMAP);
9999: <map>
10000: <resource id="1" type="start"></resource>
10001: <resource id="2" src="$mapurl"></resource>
10002: <resource id="3" type="finish"></resource>
10003: <link index="1" from="1" to="2"></link>
10004: <link index="2" from="2" to="3"></link>
10005: </map>
10006: ENDINITMAP
10007: $topurl=&declutter(
10008: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
10009: );
10010: }
10011: # ----------------------------------------------------------- Write preferences
10012: &writecoursepref($udom.'_'.$uname,
10013: ('description' => $description,
10014: 'url' => $topurl,
10015: 'internal.creator' => $env{'user.name'}.':'.
10016: $env{'user.domain'},
10017: 'internal.created' => $now,
10018: 'internal.creationcontext' => $context)
10019: );
10020: return '/'.$udom.'/'.$uname;
10021: }
10022:
10023: # ------------------------------------------------------------------- Create ID
10024: sub generate_coursenum {
10025: my ($udom,$crstype) = @_;
10026: my $domdesc = &domain($udom);
10027: return 'error: invalid domain' if ($domdesc eq '');
10028: my $first;
10029: if ($crstype eq 'Community') {
10030: $first = '0';
10031: } else {
10032: $first = int(1+rand(9));
10033: }
10034: my $uname=$first.
10035: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
10036: substr($$.time,0,5).unpack("H8",pack("I32",time)).
10037: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
10038: # ----------------------------------------------- Make sure that does not exist
10039: my $uhome=&homeserver($uname,$udom,'true');
10040: unless (($uhome eq '') || ($uhome eq 'no_host')) {
10041: if ($crstype eq 'Community') {
10042: $first = '0';
10043: } else {
10044: $first = int(1+rand(9));
10045: }
10046: $uname=$first.
10047: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
10048: substr($$.time,0,5).unpack("H8",pack("I32",time)).
10049: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
10050: $uhome=&homeserver($uname,$udom,'true');
10051: unless (($uhome eq '') || ($uhome eq 'no_host')) {
10052: return 'error: unable to generate unique course-ID';
10053: }
10054: }
10055: return $uname;
10056: }
10057:
10058: sub is_course {
10059: my ($cdom, $cnum) = scalar(@_) == 1 ?
10060: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
10061:
10062: return unless (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/));
10063: my $uhome=&homeserver($cnum,$cdom);
10064: my $iscourse;
10065: if (grep { $_ eq $uhome } current_machine_ids()) {
10066: $iscourse = &LONCAPA::Lond::is_course($cdom,$cnum);
10067: } else {
10068: my $hashid = $cdom.':'.$cnum;
10069: ($iscourse,my $cached) = &is_cached_new('iscourse',$hashid);
10070: unless (defined($cached)) {
10071: my %courses = &courseiddump($cdom, '.', 1, '.', '.',
10072: $cnum,undef,undef,'.');
10073: $iscourse = 0;
10074: if (exists($courses{$cdom.'_'.$cnum})) {
10075: $iscourse = 1;
10076: }
10077: &do_cache_new('iscourse',$hashid,$iscourse,3600);
10078: }
10079: }
10080: return unless ($iscourse);
10081: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
10082: }
10083:
10084: sub store_userdata {
10085: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
10086: my $result;
10087: if ($datakey ne '') {
10088: if (ref($storehash) eq 'HASH') {
10089: if ($udom eq '' || $uname eq '') {
10090: $udom = $env{'user.domain'};
10091: $uname = $env{'user.name'};
10092: }
10093: my $uhome=&homeserver($uname,$udom);
10094: if (($uhome eq '') || ($uhome eq 'no_host')) {
10095: $result = 'error: no_host';
10096: } else {
10097: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
10098: $storehash->{'host'} = $perlvar{'lonHostID'};
10099:
10100: my $namevalue='';
10101: foreach my $key (keys(%{$storehash})) {
10102: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
10103: }
10104: $namevalue=~s/\&$//;
10105: unless ($namespace eq 'courserequests') {
10106: $datakey = &escape($datakey);
10107: }
10108: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
10109: $namevalue,$uhome);
10110: }
10111: } else {
10112: $result = 'error: data to store was not a hash reference';
10113: }
10114: } else {
10115: $result= 'error: invalid requestkey';
10116: }
10117: return $result;
10118: }
10119:
10120: # ---------------------------------------------------------- Assign Custom Role
10121:
10122: sub assigncustomrole {
10123: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
10124: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
10125: $end,$start,$deleteflag,$selfenroll,$context);
10126: }
10127:
10128: # ----------------------------------------------------------------- Revoke Role
10129:
10130: sub revokerole {
10131: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
10132: my $now=time;
10133: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
10134: }
10135:
10136: # ---------------------------------------------------------- Revoke Custom Role
10137:
10138: sub revokecustomrole {
10139: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
10140: my $now=time;
10141: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
10142: $deleteflag,$selfenroll,$context);
10143: }
10144:
10145: # ------------------------------------------------------------ Disk usage
10146: sub diskusage {
10147: my ($udom,$uname,$directorypath,$getpropath)=@_;
10148: $directorypath =~ s/\/$//;
10149: my $listing=&reply('du2:'.&escape($directorypath).':'
10150: .&escape($getpropath).':'.&escape($uname).':'
10151: .&escape($udom),homeserver($uname,$udom));
10152: if ($listing eq 'unknown_cmd') {
10153: if ($getpropath) {
10154: $directorypath = &propath($udom,$uname).'/'.$directorypath;
10155: }
10156: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
10157: }
10158: return $listing;
10159: }
10160:
10161: sub is_locked {
10162: my ($file_name, $domain, $user, $which) = @_;
10163: my @check;
10164: my $is_locked;
10165: push (@check,$file_name);
10166: my %locked = &get('file_permissions',\@check,
10167: $env{'user.domain'},$env{'user.name'});
10168: my ($tmp)=keys(%locked);
10169: if ($tmp=~/^error:/) { undef(%locked); }
10170:
10171: if (ref($locked{$file_name}) eq 'ARRAY') {
10172: $is_locked = 'false';
10173: foreach my $entry (@{$locked{$file_name}}) {
10174: if (ref($entry) eq 'ARRAY') {
10175: $is_locked = 'true';
10176: if (ref($which) eq 'ARRAY') {
10177: push(@{$which},$entry);
10178: } else {
10179: last;
10180: }
10181: }
10182: }
10183: } else {
10184: $is_locked = 'false';
10185: }
10186: return $is_locked;
10187: }
10188:
10189: sub declutter_portfile {
10190: my ($file) = @_;
10191: $file =~ s{^(/portfolio/|portfolio/)}{/};
10192: return $file;
10193: }
10194:
10195: # ------------------------------------------------------------- Mark as Read Only
10196:
10197: sub mark_as_readonly {
10198: my ($domain,$user,$files,$what) = @_;
10199: my %current_permissions = &dump('file_permissions',$domain,$user);
10200: my ($tmp)=keys(%current_permissions);
10201: if ($tmp=~/^error:/) { undef(%current_permissions); }
10202: foreach my $file (@{$files}) {
10203: $file = &declutter_portfile($file);
10204: push(@{$current_permissions{$file}},$what);
10205: }
10206: &put('file_permissions',\%current_permissions,$domain,$user);
10207: return;
10208: }
10209:
10210: # ------------------------------------------------------------Save Selected Files
10211:
10212: sub save_selected_files {
10213: my ($user, $path, @files) = @_;
10214: my $filename = $user."savedfiles";
10215: my @other_files = &files_not_in_path($user, $path);
10216: open (OUT,'>',LONCAPA::tempdir().$filename);
10217: foreach my $file (@files) {
10218: print (OUT $env{'form.currentpath'}.$file."\n");
10219: }
10220: foreach my $file (@other_files) {
10221: print (OUT $file."\n");
10222: }
10223: close (OUT);
10224: return 'ok';
10225: }
10226:
10227: sub clear_selected_files {
10228: my ($user) = @_;
10229: my $filename = $user."savedfiles";
10230: open (OUT,'>',LONCAPA::tempdir().$filename);
10231: print (OUT undef);
10232: close (OUT);
10233: return ("ok");
10234: }
10235:
10236: sub files_in_path {
10237: my ($user, $path) = @_;
10238: my $filename = $user."savedfiles";
10239: my %return_files;
10240: open (IN,'<',LONCAPA::tempdir().$filename);
10241: while (my $line_in = <IN>) {
10242: chomp ($line_in);
10243: my @paths_and_file = split (m!/!, $line_in);
10244: my $file_part = pop (@paths_and_file);
10245: my $path_part = join ('/', @paths_and_file);
10246: $path_part.='/';
10247: my $path_and_file = $path_part.$file_part;
10248: if ($path_part eq $path) {
10249: $return_files{$file_part}= 'selected';
10250: }
10251: }
10252: close (IN);
10253: return (\%return_files);
10254: }
10255:
10256: # called in portfolio select mode, to show files selected NOT in current directory
10257: sub files_not_in_path {
10258: my ($user, $path) = @_;
10259: my $filename = $user."savedfiles";
10260: my @return_files;
10261: my $path_part;
10262: open(IN, '<',LONCAPA::tempdir().$filename);
10263: while (my $line = <IN>) {
10264: #ok, I know it's clunky, but I want it to work
10265: my @paths_and_file = split(m|/|, $line);
10266: my $file_part = pop(@paths_and_file);
10267: chomp($file_part);
10268: my $path_part = join('/', @paths_and_file);
10269: $path_part .= '/';
10270: my $path_and_file = $path_part.$file_part;
10271: if ($path_part ne $path) {
10272: push(@return_files, ($path_and_file));
10273: }
10274: }
10275: close(OUT);
10276: return (@return_files);
10277: }
10278:
10279: #------------------------------Submitted/Handedback Portfolio Files Versioning
10280:
10281: sub portfiles_versioning {
10282: my ($symb,$domain,$stu_name,$portfiles,$versioned_portfiles) = @_;
10283: my $portfolio_root = '/userfiles/portfolio';
10284: return unless ((ref($portfiles) eq 'ARRAY') && (ref($versioned_portfiles) eq 'ARRAY'));
10285: foreach my $file (@{$portfiles}) {
10286: &unmark_as_readonly($domain,$stu_name,[$symb,$env{'request.course.id'}],$file);
10287: my ($directory,$answer_file) =($file =~ /^(.*?)([^\/]*)$/);
10288: my ($answer_name,$answer_ver,$answer_ext) = &file_name_version_ext($answer_file);
10289: my $getpropath = 1;
10290: my ($dir_list,$listerror) = &dirlist($portfolio_root.$directory,$domain,
10291: $stu_name,$getpropath);
10292: my $version = &get_next_version($answer_name,$answer_ext,$dir_list);
10293: my $new_answer =
10294: &version_selected_portfile($domain,$stu_name,$directory,$answer_file,$version);
10295: if ($new_answer ne 'problem getting file') {
10296: push(@{$versioned_portfiles}, $directory.$new_answer);
10297: &mark_as_readonly($domain,$stu_name,[$directory.$new_answer],
10298: [$symb,$env{'request.course.id'},'graded']);
10299: }
10300: }
10301: }
10302:
10303: sub get_next_version {
10304: my ($answer_name, $answer_ext, $dir_list) = @_;
10305: my $version;
10306: if (ref($dir_list) eq 'ARRAY') {
10307: foreach my $row (@{$dir_list}) {
10308: my ($file) = split(/\&/,$row,2);
10309: my ($file_name,$file_version,$file_ext) =
10310: &file_name_version_ext($file);
10311: if (($file_name eq $answer_name) &&
10312: ($file_ext eq $answer_ext)) {
10313: # gets here if filename and extension match,
10314: # regardless of version
10315: if ($file_version ne '') {
10316: # a versioned file is found so save it for later
10317: if ($file_version > $version) {
10318: $version = $file_version;
10319: }
10320: }
10321: }
10322: }
10323: }
10324: $version ++;
10325: return($version);
10326: }
10327:
10328: sub version_selected_portfile {
10329: my ($domain,$stu_name,$directory,$file_name,$version) = @_;
10330: my ($answer_name,$answer_ver,$answer_ext) =
10331: &file_name_version_ext($file_name);
10332: my $new_answer;
10333: $env{'form.copy'} =
10334: &getfile("/uploaded/$domain/$stu_name/portfolio$directory$file_name");
10335: if($env{'form.copy'} eq '-1') {
10336: $new_answer = 'problem getting file';
10337: } else {
10338: $new_answer = $answer_name.'.'.$version.'.'.$answer_ext;
10339: my $copy_result =
10340: &finishuserfileupload($stu_name,$domain,'copy',
10341: '/portfolio'.$directory.$new_answer);
10342: }
10343: undef($env{'form.copy'});
10344: return ($new_answer);
10345: }
10346:
10347: sub file_name_version_ext {
10348: my ($file)=@_;
10349: my @file_parts = split(/\./, $file);
10350: my ($name,$version,$ext);
10351: if (@file_parts > 1) {
10352: $ext=pop(@file_parts);
10353: if (@file_parts > 1 && $file_parts[-1] =~ /^\d+$/) {
10354: $version=pop(@file_parts);
10355: }
10356: $name=join('.',@file_parts);
10357: } else {
10358: $name=join('.',@file_parts);
10359: }
10360: return($name,$version,$ext);
10361: }
10362:
10363: #----------------------------------------------Get portfolio file permissions
10364:
10365: sub get_portfile_permissions {
10366: my ($domain,$user) = @_;
10367: my %current_permissions = &dump('file_permissions',$domain,$user);
10368: my ($tmp)=keys(%current_permissions);
10369: if ($tmp=~/^error:/) { undef(%current_permissions); }
10370: return \%current_permissions;
10371: }
10372:
10373: #---------------------------------------------Get portfolio file access controls
10374:
10375: sub get_access_controls {
10376: my ($current_permissions,$group,$file) = @_;
10377: my %access;
10378: my $real_file = $file;
10379: $file =~ s/\.meta$//;
10380: if (defined($file)) {
10381: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
10382: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
10383: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
10384: }
10385: }
10386: } else {
10387: foreach my $key (keys(%{$current_permissions})) {
10388: if ($key =~ /\0accesscontrol$/) {
10389: if (defined($group)) {
10390: if ($key !~ m-^\Q$group\E/-) {
10391: next;
10392: }
10393: }
10394: my ($fullpath) = split(/\0/,$key);
10395: if (ref($$current_permissions{$key}) eq 'HASH') {
10396: foreach my $control (keys(%{$$current_permissions{$key}})) {
10397: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
10398: }
10399: }
10400: }
10401: }
10402: }
10403: return %access;
10404: }
10405:
10406: sub modify_access_controls {
10407: my ($file_name,$changes,$domain,$user)=@_;
10408: my ($outcome,$deloutcome);
10409: my %store_permissions;
10410: my %new_values;
10411: my %new_control;
10412: my %translation;
10413: my @deletions = ();
10414: my $now = time;
10415: if (exists($$changes{'activate'})) {
10416: if (ref($$changes{'activate'}) eq 'HASH') {
10417: my @newitems = sort(keys(%{$$changes{'activate'}}));
10418: my $numnew = scalar(@newitems);
10419: for (my $i=0; $i<$numnew; $i++) {
10420: my $newkey = $newitems[$i];
10421: my $newid = &Apache::loncommon::get_cgi_id();
10422: if ($newkey =~ /^\d+:/) {
10423: $newkey =~ s/^(\d+)/$newid/;
10424: $translation{$1} = $newid;
10425: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
10426: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
10427: $translation{$1} = $newid;
10428: }
10429: $new_values{$file_name."\0".$newkey} =
10430: $$changes{'activate'}{$newitems[$i]};
10431: $new_control{$newkey} = $now;
10432: }
10433: }
10434: }
10435: my %todelete;
10436: my %changed_items;
10437: foreach my $action ('delete','update') {
10438: if (exists($$changes{$action})) {
10439: if (ref($$changes{$action}) eq 'HASH') {
10440: foreach my $key (keys(%{$$changes{$action}})) {
10441: my ($itemnum) = ($key =~ /^([^:]+):/);
10442: if ($action eq 'delete') {
10443: $todelete{$itemnum} = 1;
10444: } else {
10445: $changed_items{$itemnum} = $key;
10446: }
10447: }
10448: }
10449: }
10450: }
10451: # get lock on access controls for file.
10452: my $lockhash = {
10453: $file_name."\0".'locked_access_records' => $env{'user.name'}.
10454: ':'.$env{'user.domain'},
10455: };
10456: my $tries = 0;
10457: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
10458:
10459: while (($gotlock ne 'ok') && $tries < 10) {
10460: $tries ++;
10461: sleep(0.1);
10462: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
10463: }
10464: if ($gotlock eq 'ok') {
10465: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
10466: my ($tmp)=keys(%curr_permissions);
10467: if ($tmp=~/^error:/) { undef(%curr_permissions); }
10468: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
10469: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
10470: if (ref($curr_controls) eq 'HASH') {
10471: foreach my $control_item (keys(%{$curr_controls})) {
10472: my ($itemnum) = ($control_item =~ /^([^:]+):/);
10473: if (defined($todelete{$itemnum})) {
10474: push(@deletions,$file_name."\0".$control_item);
10475: } else {
10476: if (defined($changed_items{$itemnum})) {
10477: $new_control{$changed_items{$itemnum}} = $now;
10478: push(@deletions,$file_name."\0".$control_item);
10479: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
10480: } else {
10481: $new_control{$control_item} = $$curr_controls{$control_item};
10482: }
10483: }
10484: }
10485: }
10486: }
10487: my ($group);
10488: if (&is_course($domain,$user)) {
10489: ($group,my $file) = split(/\//,$file_name,2);
10490: }
10491: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
10492: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
10493: $outcome = &put('file_permissions',\%new_values,$domain,$user);
10494: # remove lock
10495: my @del_lock = ($file_name."\0".'locked_access_records');
10496: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
10497: my $sqlresult =
10498: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
10499: $group);
10500: } else {
10501: $outcome = "error: could not obtain lockfile\n";
10502: }
10503: return ($outcome,$deloutcome,\%new_values,\%translation);
10504: }
10505:
10506: sub make_public_indefinitely {
10507: my (@requrl) = @_;
10508: return &automated_portfile_access('public',\@requrl);
10509: }
10510:
10511: sub automated_portfile_access {
10512: my ($accesstype,$addsref,$delsref,$info) = @_;
10513: unless (($accesstype eq 'public') || ($accesstype eq 'ip')) {
10514: return 'invalid';
10515: }
10516: my %urls;
10517: if (ref($addsref) eq 'ARRAY') {
10518: foreach my $requrl (@{$addsref}) {
10519: if (&is_portfolio_url($requrl)) {
10520: unless (exists($urls{$requrl})) {
10521: $urls{$requrl} = 'add';
10522: }
10523: }
10524: }
10525: }
10526: if (ref($delsref) eq 'ARRAY') {
10527: foreach my $requrl (@{$delsref}) {
10528: if (&is_portfolio_url($requrl)) {
10529: unless (exists($urls{$requrl})) {
10530: $urls{$requrl} = 'delete';
10531: }
10532: }
10533: }
10534: }
10535: unless (keys(%urls)) {
10536: return 'invalid';
10537: }
10538: my $ip;
10539: if ($accesstype eq 'ip') {
10540: if (ref($info) eq 'HASH') {
10541: if ($info->{'ip'} ne '') {
10542: $ip = $info->{'ip'};
10543: }
10544: }
10545: if ($ip eq '') {
10546: return 'invalid';
10547: }
10548: }
10549: my $errors;
10550: my $now = time;
10551: my %current_perms;
10552: foreach my $requrl (sort(keys(%urls))) {
10553: my $action;
10554: if ($urls{$requrl} eq 'add') {
10555: $action = 'activate';
10556: } else {
10557: $action = 'none';
10558: }
10559: my $aclnum = 0;
10560: my (undef,$udom,$unum,$file_name,$group) =
10561: &parse_portfolio_url($requrl);
10562: unless (exists($current_perms{$unum.':'.$udom})) {
10563: $current_perms{$unum.':'.$udom} = &get_portfile_permissions($udom,$unum);
10564: }
10565: my %access_controls = &get_access_controls($current_perms{$unum.':'.$udom},
10566: $group,$file_name);
10567: foreach my $key (keys(%{$access_controls{$file_name}})) {
10568: my ($num,$scope,$end,$start) =
10569: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
10570: if ($scope eq $accesstype) {
10571: if (($start <= $now) && ($end == 0)) {
10572: if ($accesstype eq 'ip') {
10573: if (ref($access_controls{$file_name}{$key}) eq 'HASH') {
10574: if (ref($access_controls{$file_name}{$key}{'ip'}) eq 'ARRAY') {
10575: if (grep(/^\Q$ip\E$/,@{$access_controls{$file_name}{$key}{'ip'}})) {
10576: if ($urls{$requrl} eq 'add') {
10577: $action = 'none';
10578: last;
10579: } else {
10580: $action = 'delete';
10581: $aclnum = $num;
10582: last;
10583: }
10584: }
10585: }
10586: }
10587: } elsif ($accesstype eq 'public') {
10588: if ($urls{$requrl} eq 'add') {
10589: $action = 'none';
10590: last;
10591: } else {
10592: $action = 'delete';
10593: $aclnum = $num;
10594: last;
10595: }
10596: }
10597: } elsif ($accesstype eq 'public') {
10598: $action = 'update';
10599: $aclnum = $num;
10600: last;
10601: }
10602: }
10603: }
10604: if ($action eq 'none') {
10605: next;
10606: } else {
10607: my %changes;
10608: my $newend = 0;
10609: my $newstart = $now;
10610: my $newkey = $aclnum.':'.$accesstype.'_'.$newend.'_'.$newstart;
10611: $changes{$action}{$newkey} = {
10612: type => $accesstype,
10613: time => {
10614: start => $newstart,
10615: end => $newend,
10616: },
10617: };
10618: if ($accesstype eq 'ip') {
10619: $changes{$action}{$newkey}{'ip'} = [$ip];
10620: }
10621: my ($outcome,$deloutcome,$new_values,$translation) =
10622: &modify_access_controls($file_name,\%changes,$udom,$unum);
10623: unless ($outcome eq 'ok') {
10624: $errors .= $outcome.' ';
10625: }
10626: }
10627: }
10628: if ($errors) {
10629: $errors =~ s/\s$//;
10630: return $errors;
10631: } else {
10632: return 'ok';
10633: }
10634: }
10635:
10636: #------------------------------------------------------Get Marked as Read Only
10637:
10638: sub get_marked_as_readonly {
10639: my ($domain,$user,$what,$group) = @_;
10640: my $current_permissions = &get_portfile_permissions($domain,$user);
10641: my @readonly_files;
10642: my $cmp1=$what;
10643: if (ref($what)) { $cmp1=join('',@{$what}) };
10644: while (my ($file_name,$value) = each(%{$current_permissions})) {
10645: if (defined($group)) {
10646: if ($file_name !~ m-^\Q$group\E/-) {
10647: next;
10648: }
10649: }
10650: if (ref($value) eq "ARRAY"){
10651: foreach my $stored_what (@{$value}) {
10652: my $cmp2=$stored_what;
10653: if (ref($stored_what) eq 'ARRAY') {
10654: $cmp2=join('',@{$stored_what});
10655: }
10656: if ($cmp1 eq $cmp2) {
10657: push(@readonly_files, $file_name);
10658: last;
10659: } elsif (!defined($what)) {
10660: push(@readonly_files, $file_name);
10661: last;
10662: }
10663: }
10664: }
10665: }
10666: return @readonly_files;
10667: }
10668: #-----------------------------------------------------------Get Marked as Read Only Hash
10669:
10670: sub get_marked_as_readonly_hash {
10671: my ($current_permissions,$group,$what) = @_;
10672: my %readonly_files;
10673: while (my ($file_name,$value) = each(%{$current_permissions})) {
10674: if (defined($group)) {
10675: if ($file_name !~ m-^\Q$group\E/-) {
10676: next;
10677: }
10678: }
10679: if (ref($value) eq "ARRAY"){
10680: foreach my $stored_what (@{$value}) {
10681: if (ref($stored_what) eq 'ARRAY') {
10682: foreach my $lock_descriptor(@{$stored_what}) {
10683: if ($lock_descriptor eq 'graded') {
10684: $readonly_files{$file_name} = 'graded';
10685: } elsif ($lock_descriptor eq 'handback') {
10686: $readonly_files{$file_name} = 'handback';
10687: } else {
10688: if (!exists($readonly_files{$file_name})) {
10689: $readonly_files{$file_name} = 'locked';
10690: }
10691: }
10692: }
10693: }
10694: }
10695: }
10696: }
10697: return %readonly_files;
10698: }
10699: # ------------------------------------------------------------ Unmark as Read Only
10700:
10701: sub unmark_as_readonly {
10702: # unmarks $file_name (if $file_name is defined), or all files locked by $what
10703: # for portfolio submissions, $what contains [$symb,$crsid]
10704: my ($domain,$user,$what,$file_name,$group) = @_;
10705: $file_name = &declutter_portfile($file_name);
10706: my $symb_crs = $what;
10707: if (ref($what)) { $symb_crs=join('',@$what); }
10708: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
10709: my ($tmp)=keys(%current_permissions);
10710: if ($tmp=~/^error:/) { undef(%current_permissions); }
10711: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
10712: foreach my $file (@readonly_files) {
10713: my $clean_file = &declutter_portfile($file);
10714: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
10715: my $current_locks = $current_permissions{$file};
10716: my @new_locks;
10717: my @del_keys;
10718: if (ref($current_locks) eq "ARRAY"){
10719: foreach my $locker (@{$current_locks}) {
10720: my $compare=$locker;
10721: if (ref($locker) eq 'ARRAY') {
10722: $compare=join('',@{$locker});
10723: if ($compare ne $symb_crs) {
10724: push(@new_locks, $locker);
10725: }
10726: }
10727: }
10728: if (scalar(@new_locks) > 0) {
10729: $current_permissions{$file} = \@new_locks;
10730: } else {
10731: push(@del_keys, $file);
10732: &del('file_permissions',\@del_keys, $domain, $user);
10733: delete($current_permissions{$file});
10734: }
10735: }
10736: }
10737: &put('file_permissions',\%current_permissions,$domain,$user);
10738: return;
10739: }
10740:
10741: # ------------------------------------------------------------ Directory lister
10742:
10743: sub dirlist {
10744: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
10745: $uri=~s/^\///;
10746: $uri=~s/\/$//;
10747: my ($udom, $uname);
10748: if ($getuserdir) {
10749: $udom = $userdomain;
10750: $uname = $username;
10751: } else {
10752: (undef,$udom,$uname)=split(/\//,$uri);
10753: if(defined($userdomain)) {
10754: $udom = $userdomain;
10755: }
10756: if(defined($username)) {
10757: $uname = $username;
10758: }
10759: }
10760: my ($dirRoot,$listing,@listing_results);
10761:
10762: $dirRoot = $perlvar{'lonDocRoot'};
10763: if (defined($getpropath)) {
10764: $dirRoot = &propath($udom,$uname);
10765: $dirRoot =~ s/\/$//;
10766: } elsif (defined($getuserdir)) {
10767: my $subdir=$uname.'__';
10768: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
10769: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
10770: ."/$udom/$subdir/$uname";
10771: } elsif (defined($alternateRoot)) {
10772: $dirRoot = $alternateRoot;
10773: }
10774:
10775: if($udom) {
10776: if($uname) {
10777: my $uhome = &homeserver($uname,$udom);
10778: if ($uhome eq 'no_host') {
10779: return ([],'no_host');
10780: }
10781: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
10782: .$getuserdir.':'.&escape($dirRoot)
10783: .':'.&escape($uname).':'.&escape($udom),$uhome);
10784: if ($listing eq 'unknown_cmd') {
10785: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
10786: } else {
10787: @listing_results = map { &unescape($_); } split(/:/,$listing);
10788: }
10789: if ($listing eq 'unknown_cmd') {
10790: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
10791: @listing_results = split(/:/,$listing);
10792: } else {
10793: @listing_results = map { &unescape($_); } split(/:/,$listing);
10794: }
10795: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
10796: ($listing eq 'rejected') || ($listing eq 'refused') ||
10797: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
10798: return ([],$listing);
10799: } else {
10800: return (\@listing_results);
10801: }
10802: } elsif(!$alternateRoot) {
10803: my (%allusers,%listerror);
10804: my %servers = &get_servers($udom,'library');
10805: foreach my $tryserver (keys(%servers)) {
10806: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
10807: &escape($udom),$tryserver);
10808: if ($listing eq 'unknown_cmd') {
10809: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
10810: $udom, $tryserver);
10811: } else {
10812: @listing_results = map { &unescape($_); } split(/:/,$listing);
10813: }
10814: if ($listing eq 'unknown_cmd') {
10815: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
10816: $udom, $tryserver);
10817: @listing_results = split(/:/,$listing);
10818: } else {
10819: @listing_results =
10820: map { &unescape($_); } split(/:/,$listing);
10821: }
10822: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
10823: ($listing eq 'rejected') || ($listing eq 'refused') ||
10824: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
10825: $listerror{$tryserver} = $listing;
10826: } else {
10827: foreach my $line (@listing_results) {
10828: my ($entry) = split(/&/,$line,2);
10829: $allusers{$entry} = 1;
10830: }
10831: }
10832: }
10833: my @alluserslist=();
10834: foreach my $user (sort(keys(%allusers))) {
10835: push(@alluserslist,$user.'&user');
10836: }
10837:
10838: if (!%listerror) {
10839: # no errors
10840: return (\@alluserslist);
10841: } elsif (scalar(keys(%servers)) == 1) {
10842: # one library server, one error
10843: my ($key) = keys(%listerror);
10844: return (\@alluserslist, $listerror{$key});
10845: } elsif ( grep { $_ eq 'con_lost' } values(%listerror) ) {
10846: # con_lost indicates that we might miss data from at least one
10847: # library server
10848: return (\@alluserslist, 'con_lost');
10849: } else {
10850: # multiple library servers and no con_lost -> data should be
10851: # complete.
10852: return (\@alluserslist);
10853: }
10854:
10855: } else {
10856: return ([],'missing username');
10857: }
10858: } elsif(!defined($getpropath)) {
10859: my $path = $perlvar{'lonDocRoot'}.'/res/';
10860: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
10861: return (\@all_domains);
10862: } else {
10863: return ([],'missing domain');
10864: }
10865: }
10866:
10867: # --------------------------------------------- GetFileTimestamp
10868: # This function utilizes dirlist and returns the date stamp for
10869: # when it was last modified. It will also return an error of -1
10870: # if an error occurs
10871:
10872: sub GetFileTimestamp {
10873: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
10874: $studentDomain = &LONCAPA::clean_domain($studentDomain);
10875: $studentName = &LONCAPA::clean_username($studentName);
10876: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
10877: undef,$getuserdir);
10878: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
10879: return -1;
10880: }
10881: if (ref($fileref) eq 'ARRAY') {
10882: my @stats = split('&',$fileref->[0]);
10883: # @stats contains first the filename, then the stat output
10884: return $stats[10]; # so this is 10 instead of 9.
10885: } else {
10886: return -1;
10887: }
10888: }
10889:
10890: sub stat_file {
10891: my ($uri) = @_;
10892: $uri = &clutter_with_no_wrapper($uri);
10893:
10894: my ($udom,$uname,$file);
10895: if ($uri =~ m-^/(uploaded|editupload)/-) {
10896: ($udom,$uname,$file) =
10897: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
10898: $file = 'userfiles/'.$file;
10899: }
10900: if ($uri =~ m-^/res/-) {
10901: ($udom,$uname) =
10902: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
10903: $file = $uri;
10904: }
10905:
10906: if (!$udom || !$uname || !$file) {
10907: # unable to handle the uri
10908: return ();
10909: }
10910: my $getpropath;
10911: if ($file =~ /^userfiles\//) {
10912: $getpropath = 1;
10913: }
10914: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
10915: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
10916: return ();
10917: } else {
10918: if (ref($listref) eq 'ARRAY') {
10919: my @stats = split('&',$listref->[0]);
10920: shift(@stats); #filename is first
10921: return @stats;
10922: }
10923: }
10924: return ();
10925: }
10926:
10927: # --------------------------------------------------------- recursedirs
10928: # Recursive function to traverse either a specific user's Authoring Space
10929: # or corresponding Published Resource Space, and populate the hash ref:
10930: # $dirhashref with URLs of all directories, and if $filehashref hash
10931: # ref arg is provided, the URLs of any files, excluding versioned, .meta,
10932: # or .rights files in resource space, and .meta, .save, .log, and .bak
10933: # files in Authoring Space.
10934: #
10935: # Inputs:
10936: #
10937: # $is_home - true if current server is home server for user's space
10938: # $context - either: priv, or res respectively for Authoring or Resource Space.
10939: # $docroot - Document root (i.e., /home/httpd/html
10940: # $toppath - Top level directory (i.e., /res/$dom/$uname or /priv/$dom/$uname
10941: # $relpath - Current path (relative to top level).
10942: # $dirhashref - reference to hash to populate with URLs of directories (Required)
10943: # $filehashref - reference to hash to populate with URLs of files (Optional)
10944: #
10945: # Returns: nothing
10946: #
10947: # Side Effects: populates $dirhashref, and $filehashref (if provided).
10948: #
10949: # Currently used by interface/londocs.pm to create linked select boxes for
10950: # directory and filename to import a Course "Author" resource into a course, and
10951: # also to create linked select boxes for Authoring Space and Directory to choose
10952: # save location for creation of a new "standard" problem from the Course Editor.
10953: #
10954:
10955: sub recursedirs {
10956: my ($is_home,$context,$docroot,$toppath,$relpath,$dirhashref,$filehashref) = @_;
10957: return unless (ref($dirhashref) eq 'HASH');
10958: my $currpath = $docroot.$toppath;
10959: if ($relpath) {
10960: $currpath .= "/$relpath";
10961: }
10962: my $savefile;
10963: if (ref($filehashref)) {
10964: $savefile = 1;
10965: }
10966: if ($is_home) {
10967: if (opendir(my $dirh,$currpath)) {
10968: foreach my $item (sort { lc($a) cmp lc($b) } grep(!/^\.+$/,readdir($dirh))) {
10969: next if ($item eq '');
10970: if (-d "$currpath/$item") {
10971: my $newpath;
10972: if ($relpath) {
10973: $newpath = "$relpath/$item";
10974: } else {
10975: $newpath = $item;
10976: }
10977: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
10978: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
10979: } elsif ($savefile) {
10980: if ($context eq 'priv') {
10981: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
10982: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
10983: }
10984: } else {
10985: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/) || ($item =~ /\.rights$/)) {
10986: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
10987: }
10988: }
10989: }
10990: }
10991: closedir($dirh);
10992: }
10993: } else {
10994: my ($dirlistref,$listerror) =
10995: &dirlist($toppath.$relpath);
10996: my @dir_lines;
10997: my $dirptr=16384;
10998: if (ref($dirlistref) eq 'ARRAY') {
10999: foreach my $dir_line (sort
11000: {
11001: my ($afile)=split('&',$a,2);
11002: my ($bfile)=split('&',$b,2);
11003: return (lc($afile) cmp lc($bfile));
11004: } (@{$dirlistref})) {
11005: my ($item,$dom,undef,$testdir,undef,undef,undef,undef,$size,undef,$mtime,undef,undef,undef,$obs,undef) =
11006: split(/\&/,$dir_line,16);
11007: $item =~ s/\s+$//;
11008: next if (($item =~ /^\.\.?$/) || ($obs));
11009: if ($dirptr&$testdir) {
11010: my $newpath;
11011: if ($relpath) {
11012: $newpath = "$relpath/$item";
11013: } else {
11014: $relpath = '/';
11015: $newpath = $item;
11016: }
11017: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
11018: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
11019: } elsif ($savefile) {
11020: if ($context eq 'priv') {
11021: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
11022: $filehashref->{$relpath}{$item} = 1;
11023: }
11024: } else {
11025: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/)) {
11026: $filehashref->{$relpath}{$item} = 1;
11027: }
11028: }
11029: }
11030: }
11031: }
11032: }
11033: return;
11034: }
11035:
11036: # -------------------------------------------------------- Value of a Condition
11037:
11038: # gets the value of a specific preevaluated condition
11039: # stored in the string $env{user.state.<cid>}
11040: # or looks up a condition reference in the bighash and if if hasn't
11041: # already been evaluated recurses into docondval to get the value of
11042: # the condition, then memoizing it to
11043: # $env{user.state.<cid>.<condition>}
11044: sub directcondval {
11045: my $number=shift;
11046: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
11047: &Apache::lonuserstate::evalstate();
11048: }
11049: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
11050: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
11051: } elsif ($number =~ /^_/) {
11052: my $sub_condition;
11053: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11054: &GDBM_READER(),0640)) {
11055: $sub_condition=$bighash{'conditions'.$number};
11056: untie(%bighash);
11057: }
11058: my $value = &docondval($sub_condition);
11059: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
11060: return $value;
11061: }
11062: if ($env{'user.state.'.$env{'request.course.id'}}) {
11063: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
11064: } else {
11065: return 2;
11066: }
11067: }
11068:
11069: # get the collection of conditions for this resource
11070: sub condval {
11071: my $condidx=shift;
11072: my $allpathcond='';
11073: foreach my $cond (split(/\|/,$condidx)) {
11074: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
11075: $allpathcond.=
11076: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
11077: }
11078: }
11079: $allpathcond=~s/\|$//;
11080: return &docondval($allpathcond);
11081: }
11082:
11083: #evaluates an expression of conditions
11084: sub docondval {
11085: my ($allpathcond) = @_;
11086: my $result=0;
11087: if ($env{'request.course.id'}
11088: && defined($allpathcond)) {
11089: my $operand='|';
11090: my @stack;
11091: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
11092: if ($chunk eq '(') {
11093: push @stack,($operand,$result);
11094: } elsif ($chunk eq ')') {
11095: my $before=pop @stack;
11096: if (pop @stack eq '&') {
11097: $result=$result>$before?$before:$result;
11098: } else {
11099: $result=$result>$before?$result:$before;
11100: }
11101: } elsif (($chunk eq '&') || ($chunk eq '|')) {
11102: $operand=$chunk;
11103: } else {
11104: my $new=directcondval($chunk);
11105: if ($operand eq '&') {
11106: $result=$result>$new?$new:$result;
11107: } else {
11108: $result=$result>$new?$result:$new;
11109: }
11110: }
11111: }
11112: }
11113: return $result;
11114: }
11115:
11116: # ---------------------------------------------------- Devalidate courseresdata
11117:
11118: sub devalidatecourseresdata {
11119: my ($coursenum,$coursedomain)=@_;
11120: my $hashid=$coursenum.':'.$coursedomain;
11121: &devalidate_cache_new('courseres',$hashid);
11122: }
11123:
11124:
11125: # --------------------------------------------------- Course Resourcedata Query
11126: #
11127: # Parameters:
11128: # $coursenum - Number of the course.
11129: # $coursedomain - Domain at which the course was created.
11130: # Returns:
11131: # A hash of the course parameters along (I think) with timestamps
11132: # and version info.
11133:
11134: sub get_courseresdata {
11135: my ($coursenum,$coursedomain)=@_;
11136: my $coursehom=&homeserver($coursenum,$coursedomain);
11137: my $hashid=$coursenum.':'.$coursedomain;
11138: my ($result,$cached)=&is_cached_new('courseres',$hashid);
11139: my %dumpreply;
11140: unless (defined($cached)) {
11141: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
11142: $result=\%dumpreply;
11143: my ($tmp) = keys(%dumpreply);
11144: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
11145: &do_cache_new('courseres',$hashid,$result,600);
11146: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
11147: return $tmp;
11148: } elsif ($tmp =~ /^(error)/) {
11149: $result=undef;
11150: &do_cache_new('courseres',$hashid,$result,600);
11151: }
11152: }
11153: return $result;
11154: }
11155:
11156: sub devalidateuserresdata {
11157: my ($uname,$udom)=@_;
11158: my $hashid="$udom:$uname";
11159: &devalidate_cache_new('userres',$hashid);
11160: }
11161:
11162: sub get_userresdata {
11163: my ($uname,$udom)=@_;
11164: #most student don\'t have any data set, check if there is some data
11165: if (&EXT_cache_status($udom,$uname)) { return undef; }
11166:
11167: my $hashid="$udom:$uname";
11168: my ($result,$cached)=&is_cached_new('userres',$hashid);
11169: if (!defined($cached)) {
11170: my %resourcedata=&dump('resourcedata',$udom,$uname);
11171: $result=\%resourcedata;
11172: &do_cache_new('userres',$hashid,$result,600);
11173: }
11174: my ($tmp)=keys(%$result);
11175: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
11176: return $result;
11177: }
11178: #error 2 occurs when the .db doesn't exist
11179: if ($tmp!~/error: 2 /) {
11180: if ((!defined($cached)) || ($tmp ne 'con_lost')) {
11181: &logthis("<font color=\"blue\">WARNING:".
11182: " Trying to get resource data for ".
11183: $uname." at ".$udom.": ".
11184: $tmp."</font>");
11185: }
11186: } elsif ($tmp=~/error: 2 /) {
11187: #&EXT_cache_set($udom,$uname);
11188: &do_cache_new('userres',$hashid,undef,600);
11189: undef($tmp); # not really an error so don't send it back
11190: }
11191: return $tmp;
11192: }
11193: #----------------------------------------------- resdata - return resource data
11194: # Purpose:
11195: # Return resource data for either users or for a course.
11196: # Parameters:
11197: # $name - Course/user name.
11198: # $domain - Name of the domain the user/course is registered on.
11199: # $type - Type of thing $name is (must be 'course' or 'user')
11200: # $mapp - decluttered URL of enclosing map
11201: # $recursed - Ref to scalar -- set to 1, if nested maps have been recursed.
11202: # $recurseup - Ref to array of map URLs, starting with map containing
11203: # $mapp up through hierarchy of nested maps to top level map.
11204: # $courseid - CourseID (first part of param identifier).
11205: # $modifier - Middle part of param identifier.
11206: # $what - Last part of param identifier.
11207: # @which - Array of names of resources desired.
11208: # Returns:
11209: # The value of the first reasource in @which that is found in the
11210: # resource hash.
11211: # Exceptional Conditions:
11212: # If the $type passed in is not valid (not the string 'course' or
11213: # 'user', an undefined reference is returned.
11214: # If none of the resources are found, an undef is returned
11215: sub resdata {
11216: my ($name,$domain,$type,$mapp,$recursed,$recurseup,$courseid,
11217: $modifier,$what,@which)=@_;
11218: my $result;
11219: if ($type eq 'course') {
11220: $result=&get_courseresdata($name,$domain);
11221: } elsif ($type eq 'user') {
11222: $result=&get_userresdata($name,$domain);
11223: }
11224: if (!ref($result)) { return $result; }
11225: foreach my $item (@which) {
11226: if ($item->[1] eq 'course') {
11227: if ((ref($recurseup) eq 'ARRAY') && (ref($recursed) eq 'SCALAR')) {
11228: unless ($$recursed) {
11229: @{$recurseup} = &get_map_hierarchy($mapp,$courseid);
11230: $$recursed = 1;
11231: }
11232: foreach my $item (@${recurseup}) {
11233: my $norecursechk=$courseid.$modifier.$item.'___(all).'.$what;
11234: last if (defined($result->{$norecursechk}));
11235: my $recursechk=$courseid.$modifier.$item.'___(rec).'.$what;
11236: if (defined($result->{$recursechk})) { return [$result->{$recursechk},'map']; }
11237: }
11238: }
11239: }
11240: if (defined($result->{$item->[0]})) {
11241: return [$result->{$item->[0]},$item->[1]];
11242: }
11243: }
11244: return undef;
11245: }
11246:
11247: sub get_domain_lti {
11248: my ($cdom,$context) = @_;
11249: my ($name,%lti);
11250: if ($context eq 'consumer') {
11251: $name = 'ltitools';
11252: } elsif ($context eq 'provider') {
11253: $name = 'lti';
11254: } else {
11255: return %lti;
11256: }
11257: my ($result,$cached)=&is_cached_new($name,$cdom);
11258: if (defined($cached)) {
11259: if (ref($result) eq 'HASH') {
11260: %lti = %{$result};
11261: }
11262: } else {
11263: my %domconfig = &get_dom('configuration',[$name],$cdom);
11264: if (ref($domconfig{$name}) eq 'HASH') {
11265: %lti = %{$domconfig{$name}};
11266: my %encdomconfig = &get_dom('encconfig',[$name],$cdom);
11267: if (ref($encdomconfig{$name}) eq 'HASH') {
11268: foreach my $id (keys(%lti)) {
11269: if (ref($encdomconfig{$name}{$id}) eq 'HASH') {
11270: foreach my $item ('key','secret') {
11271: $lti{$id}{$item} = $encdomconfig{$name}{$id}{$item};
11272: }
11273: }
11274: }
11275: }
11276: }
11277: my $cachetime = 24*60*60;
11278: &do_cache_new($name,$cdom,\%lti,$cachetime);
11279: }
11280: return %lti;
11281: }
11282:
11283: sub get_numsuppfiles {
11284: my ($cnum,$cdom,$ignorecache)=@_;
11285: my $hashid=$cnum.':'.$cdom;
11286: my ($suppcount,$cached);
11287: unless ($ignorecache) {
11288: ($suppcount,$cached) = &is_cached_new('suppcount',$hashid);
11289: }
11290: unless (defined($cached)) {
11291: my $chome=&homeserver($cnum,$cdom);
11292: unless ($chome eq 'no_host') {
11293: ($suppcount,my $supptools,my $errors) = (0,0,0);
11294: my $suppmap = 'supplemental.sequence';
11295: ($suppcount,$supptools,$errors) =
11296: &Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,
11297: $supptools,$errors);
11298: }
11299: &do_cache_new('suppcount',$hashid,$suppcount,600);
11300: }
11301: return $suppcount;
11302: }
11303:
11304: #
11305: # EXT resource caching routines
11306: #
11307:
11308: {
11309: # Cache (5 seconds) of map hierarchy for speedup of navmaps display
11310: #
11311: # The course for which we cache
11312: my $cachedmapkey='';
11313: # The cached recursive maps for this course
11314: my %cachedmaps=();
11315: # When this was last done
11316: my $cachedmaptime='';
11317:
11318: sub clear_EXT_cache_status {
11319: &delenv('cache.EXT.');
11320: }
11321:
11322: sub EXT_cache_status {
11323: my ($target_domain,$target_user) = @_;
11324: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
11325: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
11326: # We know already the user has no data
11327: return 1;
11328: } else {
11329: return 0;
11330: }
11331: }
11332:
11333: sub EXT_cache_set {
11334: my ($target_domain,$target_user) = @_;
11335: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
11336: #&appenv({$cachename => time});
11337: }
11338:
11339: # --------------------------------------------------------- Value of a Variable
11340: sub EXT {
11341:
11342: my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid)=@_;
11343: unless ($varname) { return ''; }
11344: #get real user name/domain, courseid and symb
11345: my $courseid;
11346: my $publicuser;
11347: if ($symbparm) {
11348: $symbparm=&get_symb_from_alias($symbparm);
11349: }
11350: if (!($uname && $udom)) {
11351: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
11352: if (!$symbparm) { $symbparm=$cursymb; }
11353: } else {
11354: $courseid=$env{'request.course.id'};
11355: }
11356: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
11357: my $rest;
11358: if (defined($therest[0])) {
11359: $rest=join('.',@therest);
11360: } else {
11361: $rest='';
11362: }
11363:
11364: my $qualifierrest=$qualifier;
11365: if ($rest) { $qualifierrest.='.'.$rest; }
11366: my $spacequalifierrest=$space;
11367: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
11368: if ($realm eq 'user') {
11369: # --------------------------------------------------------------- user.resource
11370: if ($space eq 'resource') {
11371: if ( (defined($Apache::lonhomework::parsing_a_problem)
11372: || defined($Apache::lonhomework::parsing_a_task))
11373: &&
11374: ($symbparm eq &symbread()) ) {
11375: # if we are in the middle of processing the resource the
11376: # get the value we are planning on committing
11377: if (defined($Apache::lonhomework::results{$qualifierrest})) {
11378: return $Apache::lonhomework::results{$qualifierrest};
11379: } else {
11380: return $Apache::lonhomework::history{$qualifierrest};
11381: }
11382: } else {
11383: my %restored;
11384: if ($publicuser || $env{'request.state'} eq 'construct') {
11385: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
11386: } else {
11387: %restored=&restore($symbparm,$courseid,$udom,$uname);
11388: }
11389: return $restored{$qualifierrest};
11390: }
11391: # ----------------------------------------------------------------- user.access
11392: } elsif ($space eq 'access') {
11393: # FIXME - not supporting calls for a specific user
11394: return &allowed($qualifier,$rest);
11395: # ------------------------------------------ user.preferences, user.environment
11396: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
11397: if (($uname eq $env{'user.name'}) &&
11398: ($udom eq $env{'user.domain'})) {
11399: return $env{join('.',('environment',$qualifierrest))};
11400: } else {
11401: my %returnhash;
11402: if (!$publicuser) {
11403: %returnhash=&userenvironment($udom,$uname,
11404: $qualifierrest);
11405: }
11406: return $returnhash{$qualifierrest};
11407: }
11408: # ----------------------------------------------------------------- user.course
11409: } elsif ($space eq 'course') {
11410: # FIXME - not supporting calls for a specific user
11411: return $env{join('.',('request.course',$qualifier))};
11412: # ------------------------------------------------------------------- user.role
11413: } elsif ($space eq 'role') {
11414: # FIXME - not supporting calls for a specific user
11415: my ($role,$where)=split(/\./,$env{'request.role'});
11416: if ($qualifier eq 'value') {
11417: return $role;
11418: } elsif ($qualifier eq 'extent') {
11419: return $where;
11420: }
11421: # ----------------------------------------------------------------- user.domain
11422: } elsif ($space eq 'domain') {
11423: return $udom;
11424: # ------------------------------------------------------------------- user.name
11425: } elsif ($space eq 'name') {
11426: return $uname;
11427: # ---------------------------------------------------- Any other user namespace
11428: } else {
11429: my %reply;
11430: if (!$publicuser) {
11431: %reply=&get($space,[$qualifierrest],$udom,$uname);
11432: }
11433: return $reply{$qualifierrest};
11434: }
11435: } elsif ($realm eq 'query') {
11436: # ---------------------------------------------- pull stuff out of query string
11437: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
11438: [$spacequalifierrest]);
11439: return $env{'form.'.$spacequalifierrest};
11440: } elsif ($realm eq 'request') {
11441: # ------------------------------------------------------------- request.browser
11442: if ($space eq 'browser') {
11443: return $env{'browser.'.$qualifier};
11444: # ------------------------------------------------------------ request.filename
11445: } else {
11446: return $env{'request.'.$spacequalifierrest};
11447: }
11448: } elsif ($realm eq 'course') {
11449: # ---------------------------------------------------------- course.description
11450: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
11451: } elsif ($realm eq 'resource') {
11452:
11453: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
11454: if (!$symbparm) { $symbparm=&symbread(); }
11455: }
11456:
11457: if ($qualifier eq '') {
11458: if ($space eq 'title') {
11459: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
11460: return &gettitle($symbparm);
11461: }
11462:
11463: if ($space eq 'map') {
11464: my ($map) = &decode_symb($symbparm);
11465: return &symbread($map);
11466: }
11467: if ($space eq 'maptitle') {
11468: my ($map) = &decode_symb($symbparm);
11469: return &gettitle($map);
11470: }
11471: if ($space eq 'filename') {
11472: if ($symbparm) {
11473: return &clutter((&decode_symb($symbparm))[2]);
11474: }
11475: return &hreflocation('',$env{'request.filename'});
11476: }
11477:
11478: if ((defined($courseid)) && ($courseid eq $env{'request.course.id'}) && $symbparm) {
11479: if ($space eq 'visibleparts') {
11480: my $navmap = Apache::lonnavmaps::navmap->new();
11481: my $item;
11482: if (ref($navmap)) {
11483: my $res = $navmap->getBySymb($symbparm);
11484: my $parts = $res->parts();
11485: if (ref($parts) eq 'ARRAY') {
11486: $item = join(',',@{$parts});
11487: }
11488: undef($navmap);
11489: }
11490: return $item;
11491: }
11492: }
11493: }
11494:
11495: my ($section, $group, @groups, @recurseup, $recursed);
11496: my ($courselevelm,$courseleveli,$courselevel,$mapp);
11497: if (($courseid eq '') && ($cid)) {
11498: $courseid = $cid;
11499: }
11500: if (($symbparm && $courseid) &&
11501: (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid))) {
11502:
11503: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
11504:
11505: # ----------------------------------------------------- Cascading lookup scheme
11506: my $symbp=$symbparm;
11507: $mapp=&deversion((&decode_symb($symbp))[0]);
11508: my $symbparm=$symbp.'.'.$spacequalifierrest;
11509: my $recurseparm=$mapp.'___(rec).'.$spacequalifierrest;
11510: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
11511: if (($env{'user.name'} eq $uname) &&
11512: ($env{'user.domain'} eq $udom)) {
11513: $section=$env{'request.course.sec'};
11514: @groups = split(/:/,$env{'request.course.groups'});
11515: @groups=&sort_course_groups($courseid,@groups);
11516: } else {
11517: if (! defined($usection)) {
11518: $section=&getsection($udom,$uname,$courseid);
11519: } else {
11520: $section = $usection;
11521: }
11522: @groups = &get_users_groups($udom,$uname,$courseid);
11523: }
11524:
11525: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
11526: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
11527: my $secleveli=$courseid.'.['.$section.'].'.$recurseparm;
11528: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
11529:
11530: $courselevel=$courseid.'.'.$spacequalifierrest;
11531: my $courselevelr=$courseid.'.'.$symbparm;
11532: $courseleveli=$courseid.'.'.$recurseparm;
11533: $courselevelm=$courseid.'.'.$mapparm;
11534:
11535: # ----------------------------------------------------------- first, check user
11536:
11537: my $userreply=&resdata($uname,$udom,'user',$mapp,\$recursed,
11538: \@recurseup,$courseid,'.',$spacequalifierrest,
11539: ([$courselevelr,'resource'],
11540: [$courselevelm,'map' ],
11541: [$courseleveli,'map' ],
11542: [$courselevel, 'course' ]));
11543: if (defined($userreply)) { return &get_reply($userreply); }
11544:
11545: # ------------------------------------------------ second, check some of course
11546: my $coursereply;
11547: if (@groups > 0) {
11548: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
11549: $recurseparm,$mapparm,$spacequalifierrest,
11550: $mapp,\$recursed,\@recurseup);
11551: if (defined($coursereply)) { return &get_reply($coursereply); }
11552: }
11553:
11554: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
11555: $env{'course.'.$courseid.'.domain'},
11556: 'course',$mapp,\$recursed,\@recurseup,
11557: $courseid,'.['.$section.'].',$spacequalifierrest,
11558: ([$seclevelr, 'resource'],
11559: [$seclevelm, 'map' ],
11560: [$secleveli, 'map' ],
11561: [$seclevel, 'course' ],
11562: [$courselevelr,'resource']));
11563: if (defined($coursereply)) { return &get_reply($coursereply); }
11564:
11565: # ------------------------------------------------------ third, check map parms
11566: my %parmhash=();
11567: my $thisparm='';
11568: if (tie(%parmhash,'GDBM_File',
11569: $env{'request.course.fn'}.'_parms.db',
11570: &GDBM_READER(),0640)) {
11571: $thisparm=$parmhash{$symbparm};
11572: untie(%parmhash);
11573: }
11574: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
11575: }
11576: # ------------------------------------------ fourth, look in resource metadata
11577:
11578: my $what = $spacequalifierrest;
11579: $what=~s/\./\_/;
11580: my $filename;
11581: if (!$symbparm) { $symbparm=&symbread(); }
11582: if ($symbparm) {
11583: $filename=(&decode_symb($symbparm))[2];
11584: } else {
11585: $filename=$env{'request.filename'};
11586: }
11587: my $toolsymb;
11588: if (($filename =~ /ext\.tool$/) && ($what ne '0_gradable')) {
11589: $toolsymb = $symbparm;
11590: }
11591: my $metadata=&metadata($filename,$what,$toolsymb);
11592: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
11593: $metadata=&metadata($filename,'parameter_'.$what,$toolsymb);
11594: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
11595:
11596: # ----------------------------------------------- fifth, look in rest of course
11597: if ($symbparm && defined($courseid) &&
11598: $courseid eq $env{'request.course.id'}) {
11599: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
11600: $env{'course.'.$courseid.'.domain'},
11601: 'course',$mapp,\$recursed,\@recurseup,
11602: $courseid,'.',$spacequalifierrest,
11603: ([$courselevelm,'map' ],
11604: [$courseleveli,'map' ],
11605: [$courselevel, 'course']));
11606: if (defined($coursereply)) { return &get_reply($coursereply); }
11607: }
11608: # ------------------------------------------------------------------ Cascade up
11609: unless ($space eq '0') {
11610: my @parts=split(/_/,$space);
11611: my $id=pop(@parts);
11612: my $part=join('_',@parts);
11613: if ($part eq '') { $part='0'; }
11614: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
11615: $symbparm,$udom,$uname,$section,1);
11616: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
11617: }
11618: if ($recurse) { return undef; }
11619: my $pack_def=&packages_tab_default($filename,$varname,$toolsymb);
11620: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
11621: # ---------------------------------------------------- Any other user namespace
11622: } elsif ($realm eq 'environment') {
11623: # ----------------------------------------------------------------- environment
11624: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
11625: return $env{'environment.'.$spacequalifierrest};
11626: } else {
11627: if ($uname eq 'anonymous' && $udom eq '') {
11628: return '';
11629: }
11630: my %returnhash=&userenvironment($udom,$uname,
11631: $spacequalifierrest);
11632: return $returnhash{$spacequalifierrest};
11633: }
11634: } elsif ($realm eq 'system') {
11635: # ----------------------------------------------------------------- system.time
11636: if ($space eq 'time') {
11637: return time;
11638: }
11639: } elsif ($realm eq 'server') {
11640: # ----------------------------------------------------------------- system.time
11641: if ($space eq 'name') {
11642: return $ENV{'SERVER_NAME'};
11643: }
11644: }
11645: return '';
11646: }
11647:
11648: sub get_reply {
11649: my ($reply_value) = @_;
11650: if (ref($reply_value) eq 'ARRAY') {
11651: if (wantarray) {
11652: return @$reply_value;
11653: }
11654: return $reply_value->[0];
11655: } else {
11656: return $reply_value;
11657: }
11658: }
11659:
11660: sub check_group_parms {
11661: my ($courseid,$groups,$symbparm,$recurseparm,$mapparm,$what,$mapp,
11662: $recursed,$recurseupref) = @_;
11663: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$recurseparm,'map'],
11664: [$what,'course']);
11665: my $coursereply;
11666: foreach my $group (@{$groups}) {
11667: my @groupitems = ();
11668: foreach my $level (@levels) {
11669: my $item = $courseid.'.['.$group.'].'.$level->[0];
11670: push(@groupitems,[$item,$level->[1]]);
11671: }
11672: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
11673: $env{'course.'.$courseid.'.domain'},
11674: 'course',$mapp,$recursed,$recurseupref,
11675: $courseid,'.['.$group.'].',$what,
11676: @groupitems);
11677: last if (defined($coursereply));
11678: }
11679: return $coursereply;
11680: }
11681:
11682: sub get_map_hierarchy {
11683: my ($mapname,$courseid) = @_;
11684: my @recurseup = ();
11685: if ($mapname) {
11686: if (($cachedmapkey eq $courseid) &&
11687: (abs($cachedmaptime-time)<5)) {
11688: if (ref($cachedmaps{$mapname}) eq 'ARRAY') {
11689: return @{$cachedmaps{$mapname}};
11690: }
11691: }
11692: my $navmap = Apache::lonnavmaps::navmap->new();
11693: if (ref($navmap)) {
11694: @recurseup = $navmap->recurseup_maps($mapname);
11695: undef($navmap);
11696: $cachedmaps{$mapname} = \@recurseup;
11697: $cachedmaptime=time;
11698: $cachedmapkey=$courseid;
11699: }
11700: }
11701: return @recurseup;
11702: }
11703:
11704: }
11705:
11706: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
11707: my ($courseid,@groups) = @_;
11708: @groups = sort(@groups);
11709: return @groups;
11710: }
11711:
11712: sub packages_tab_default {
11713: my ($uri,$varname,$toolsymb)=@_;
11714: my (undef,$part,$name)=split(/\./,$varname);
11715:
11716: my (@extension,@specifics,$do_default);
11717: foreach my $package (split(/,/,&metadata($uri,'packages',$toolsymb))) {
11718: my ($pack_type,$pack_part)=split(/_/,$package,2);
11719: if ($pack_type eq 'default') {
11720: $do_default=1;
11721: } elsif ($pack_type eq 'extension') {
11722: push(@extension,[$package,$pack_type,$pack_part]);
11723: } elsif ($pack_part eq $part || $pack_type eq 'part') {
11724: # only look at packages defaults for packages that this id is
11725: push(@specifics,[$package,$pack_type,$pack_part]);
11726: }
11727: }
11728: # first look for a package that matches the requested part id
11729: foreach my $package (@specifics) {
11730: my (undef,$pack_type,$pack_part)=@{$package};
11731: next if ($pack_part ne $part);
11732: if (defined($packagetab{"$pack_type&$name&default"})) {
11733: return $packagetab{"$pack_type&$name&default"};
11734: }
11735: }
11736: # look for any possible matching non extension_ package
11737: foreach my $package (@specifics) {
11738: my (undef,$pack_type,$pack_part)=@{$package};
11739: if (defined($packagetab{"$pack_type&$name&default"})) {
11740: return $packagetab{"$pack_type&$name&default"};
11741: }
11742: if ($pack_type eq 'part') { $pack_part='0'; }
11743: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
11744: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
11745: }
11746: }
11747: # look for any posible extension_ match
11748: foreach my $package (@extension) {
11749: my ($package,$pack_type)=@{$package};
11750: if (defined($packagetab{"$pack_type&$name&default"})) {
11751: return $packagetab{"$pack_type&$name&default"};
11752: }
11753: if (defined($packagetab{$package."&$name&default"})) {
11754: return $packagetab{$package."&$name&default"};
11755: }
11756: }
11757: # look for a global default setting
11758: if ($do_default && defined($packagetab{"default&$name&default"})) {
11759: return $packagetab{"default&$name&default"};
11760: }
11761: return undef;
11762: }
11763:
11764: sub add_prefix_and_part {
11765: my ($prefix,$part)=@_;
11766: my $keyroot;
11767: if (defined($prefix) && $prefix !~ /^__/) {
11768: # prefix that has a part already
11769: $keyroot=$prefix;
11770: } elsif (defined($prefix)) {
11771: # prefix that is missing a part
11772: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
11773: } else {
11774: # no prefix at all
11775: if (defined($part)) { $keyroot='_'.$part; }
11776: }
11777: return $keyroot;
11778: }
11779:
11780: # ---------------------------------------------------------------- Get metadata
11781:
11782: my %metaentry;
11783: my %importedpartids;
11784: my %importedrespids;
11785: sub metadata {
11786: my ($uri,$what,$toolsymb,$liburi,$prefix,$depthcount)=@_;
11787: $uri=&declutter($uri);
11788: # if it is a non metadata possible uri return quickly
11789: if (($uri eq '') ||
11790: (($uri =~ m|^/*adm/|) &&
11791: ($uri !~ m|^adm/includes|) && ($uri !~ m{/(smppg|bulletinboard|ext\.tool)$})) ||
11792: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
11793: return undef;
11794: }
11795: if (($uri =~ /^priv/ || $uri=~m{^home/httpd/html/priv})
11796: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
11797: return undef;
11798: }
11799: my $filename=$uri;
11800: $uri=~s/\.meta$//;
11801: #
11802: # Is the metadata already cached?
11803: # Look at timestamp of caching
11804: # Everything is cached by the main uri, libraries are never directly cached
11805: #
11806: if (!defined($liburi)) {
11807: my ($result,$cached)=&is_cached_new('meta',$uri);
11808: if (defined($cached)) { return $result->{':'.$what}; }
11809: }
11810:
11811: #
11812: # If the uri is for an external tool the file from
11813: # which metadata should be retrieved depends on whether
11814: # the tool had been configured to be gradable (set in the Course
11815: # Editor or Resource Editor).
11816: #
11817: # If a valid symb has been included as the third arg in the call
11818: # to &metadata() that can be used to retrieve the value of
11819: # parameter_0_gradable set for the resource, and included in the
11820: # uploaded map containing the tool. The value is retrieved via
11821: # &EXT(), if a valid symb is available. Otherwise the value of
11822: # gradable in the exttool_$marker.db file for the tool instance
11823: # is retrieved via &get().
11824: #
11825: # When lonuserstate::traceroute() calls lonnet::EXT() for
11826: # hiddenresource and encrypturl (during course initialization)
11827: # the map-level parameter for resource.0.gradable included in the
11828: # uploaded map containing the tool will not yet have been stored
11829: # in the user_course_parms.db file for the user's session, so in
11830: # this case fall back to retrieving gradable status from the
11831: # exttool_$marker.db file.
11832: #
11833: # In order to avoid an infinite loop, &metadata() will return
11834: # before a call to &EXT(), if the uri is for an external tool
11835: # and the $what for which metadata is being requested is
11836: # parameter_0_gradable or 0_gradable.
11837: #
11838:
11839: if ($uri =~ /ext\.tool$/) {
11840: if (($what eq 'parameter_0_gradable') || ($what eq '0_gradable')) {
11841: return;
11842: } else {
11843: my ($checked,$use_passback);
11844: if ($toolsymb ne '') {
11845: (undef,undef,my $tooluri) = &decode_symb($toolsymb);
11846: if (($tooluri eq $uri) && (&EXT('resource.0.gradable',$toolsymb))) {
11847: $checked = 1;
11848: if (&EXT('resource.0.gradable',$toolsymb) =~ /^yes$/i) {
11849: $use_passback = 1;
11850: }
11851: }
11852: }
11853: unless ($checked) {
11854: my ($ignore,$cdom,$cnum,$marker) = split(m{/},$uri);
11855: $marker=~s/\D//g;
11856: if ($marker) {
11857: my %toolsettings=&get('exttool_'.$marker,['gradable'],$cdom,$cnum);
11858: $use_passback = $toolsettings{'gradable'};
11859: }
11860: }
11861: if ($use_passback) {
11862: $filename = '/home/httpd/html/res/lib/templates/LTIpassback.tool';
11863: } else {
11864: $filename = '/home/httpd/html/res/lib/templates/LTIstandard.tool';
11865: }
11866: }
11867: }
11868:
11869: {
11870: # Imported parts would go here
11871: my @origfiletagids=();
11872: my $importedparts=0;
11873:
11874: # Imported responseids would go here
11875: my $importedresponses=0;
11876: #
11877: # Is this a recursive call for a library?
11878: #
11879: # if (! exists($metacache{$uri})) {
11880: # $metacache{$uri}={};
11881: # }
11882: my $cachetime = 60*60;
11883: if ($liburi) {
11884: $liburi=&declutter($liburi);
11885: $filename=$liburi;
11886: } else {
11887: &devalidate_cache_new('meta',$uri);
11888: undef(%metaentry);
11889: }
11890: my %metathesekeys=();
11891: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
11892: my $metastring;
11893: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
11894: my $which = &hreflocation('','/'.($liburi || $uri));
11895: $metastring =
11896: &Apache::lonnet::ssi_body($which,
11897: ('grade_target' => 'meta'));
11898: $cachetime = 1; # only want this cached in the child not long term
11899: } elsif (($uri !~ m -^(editupload)/-) &&
11900: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
11901: my $file=&filelocation('',&clutter($filename));
11902: #push(@{$metaentry{$uri.'.file'}},$file);
11903: $metastring=&getfile($file);
11904: }
11905: my $parser=HTML::LCParser->new(\$metastring);
11906: my $token;
11907: undef %metathesekeys;
11908: while ($token=$parser->get_token) {
11909: if ($token->[0] eq 'S') {
11910: if (defined($token->[2]->{'package'})) {
11911: #
11912: # This is a package - get package info
11913: #
11914: my $package=$token->[2]->{'package'};
11915: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
11916: if (defined($token->[2]->{'id'})) {
11917: $keyroot.='_'.$token->[2]->{'id'};
11918: }
11919: if ($metaentry{':packages'}) {
11920: $metaentry{':packages'}.=','.$package.$keyroot;
11921: } else {
11922: $metaentry{':packages'}=$package.$keyroot;
11923: }
11924: foreach my $pack_entry (keys(%packagetab)) {
11925: my $part=$keyroot;
11926: $part=~s/^\_//;
11927: if ($pack_entry=~/^\Q$package\E\&/ ||
11928: $pack_entry=~/^\Q$package\E_0\&/) {
11929: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
11930: # ignore package.tab specified default values
11931: # here &package_tab_default() will fetch those
11932: if ($subp eq 'default') { next; }
11933: my $value=$packagetab{$pack_entry};
11934: my $unikey;
11935: if ($pack =~ /_0$/) {
11936: $unikey='parameter_0_'.$name;
11937: $part=0;
11938: } else {
11939: $unikey='parameter'.$keyroot.'_'.$name;
11940: }
11941: if ($subp eq 'display') {
11942: $value.=' [Part: '.$part.']';
11943: }
11944: $metaentry{':'.$unikey.'.part'}=$part;
11945: $metathesekeys{$unikey}=1;
11946: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
11947: $metaentry{':'.$unikey.'.'.$subp}=$value;
11948: }
11949: if (defined($metaentry{':'.$unikey.'.default'})) {
11950: $metaentry{':'.$unikey}=
11951: $metaentry{':'.$unikey.'.default'};
11952: }
11953: }
11954: }
11955: } else {
11956: #
11957: # This is not a package - some other kind of start tag
11958: #
11959: my $entry=$token->[1];
11960: my $unikey='';
11961:
11962: if ($entry eq 'import') {
11963: #
11964: # Importing a library here
11965: #
11966: my $location=$parser->get_text('/import');
11967: my $dir=$filename;
11968: $dir=~s|[^/]*$||;
11969: $location=&filelocation($dir,$location);
11970:
11971: my $importid=$token->[2]->{'id'};
11972: my $importmode=$token->[2]->{'importmode'};
11973: #
11974: # Check metadata for imported file to
11975: # see if it contained response items
11976: #
11977: my ($origfile,@libfilekeys);
11978: my %currmetaentry = %metaentry;
11979: @libfilekeys = split(/,/,&metadata($location,'keys',undef,undef,undef,
11980: $depthcount+1));
11981: if (grep(/^responseorder$/,@libfilekeys)) {
11982: my $libresponseorder = &metadata($location,'responseorder',undef,undef,
11983: undef,$depthcount+1);
11984: if ($libresponseorder ne '') {
11985: if ($#origfiletagids<0) {
11986: undef(%importedrespids);
11987: undef(%importedpartids);
11988: }
11989: my @respids = split(/\s*,\s*/,$libresponseorder);
11990: if (@respids) {
11991: $importedrespids{$importid} = join(',',map { $importid.'_'.$_ } @respids);
11992: }
11993: if ($importedrespids{$importid} ne '') {
11994: $importedresponses = 1;
11995: # We need to get the original file and the imported file to get the response order correct
11996: # Load and inspect original file
11997: if ($#origfiletagids<0) {
11998: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
11999: $origfile=&getfile($origfilelocation);
12000: @origfiletagids=($origfile=~/<((?:\w+)response|import|part)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12001: }
12002: }
12003: }
12004: }
12005: # Do not overwrite contents of %metaentry hash for resource itself with
12006: # hash populated for imported library file
12007: %metaentry = %currmetaentry;
12008: undef(%currmetaentry);
12009: if ($importmode eq 'part') {
12010: # Import as part(s)
12011: $importedparts=1;
12012: # We need to get the original file and the imported file to get the part order correct
12013: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
12014: # Load and inspect original file if we didn't do that already
12015: if ($#origfiletagids<0) {
12016: undef(%importedrespids);
12017: undef(%importedpartids);
12018: if ($origfile eq '') {
12019: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
12020: $origfile=&getfile($origfilelocation);
12021: @origfiletagids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12022: }
12023: }
12024: my @impfilepartids;
12025: # If <partorder> tag is included in metadata for the imported file
12026: # get the parts in the imported file from that.
12027: if (grep(/^partorder$/,@libfilekeys)) {
12028: %currmetaentry = %metaentry;
12029: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
12030: $depthcount+1);
12031: %metaentry = %currmetaentry;
12032: undef(%currmetaentry);
12033: if ($libpartorder ne '') {
12034: @impfilepartids=split(/\s*,\s*/,$libpartorder);
12035: }
12036: } else {
12037: # If no <partorder> tag available, load and inspect imported file
12038: my $impfile=&getfile($location);
12039: @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12040: }
12041: if ($#impfilepartids>=0) {
12042: # This problem had parts
12043: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
12044: } else {
12045: # Importing by turning a single problem into a problem part
12046: # It gets the import-tags ID as part-ID
12047: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
12048: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
12049: }
12050: } else {
12051: # Import as problem or as normal import
12052: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
12053: unless ($importmode eq 'problem') {
12054: # Normal import
12055: if (defined($token->[2]->{'id'})) {
12056: $unikey.='_'.$token->[2]->{'id'};
12057: }
12058: }
12059: # Check metadata for imported file to
12060: # see if it contained parts
12061: if (grep(/^partorder$/,@libfilekeys)) {
12062: %currmetaentry = %metaentry;
12063: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
12064: $depthcount+1);
12065: %metaentry = %currmetaentry;
12066: undef(%currmetaentry);
12067: if ($libpartorder ne '') {
12068: $importedparts = 1;
12069: $importedpartids{$token->[2]->{'id'}}=$libpartorder;
12070: }
12071: }
12072: }
12073: if ($depthcount<20) {
12074: my $metadata =
12075: &metadata($uri,'keys',$toolsymb,$location,$unikey,
12076: $depthcount+1);
12077: foreach my $meta (split(',',$metadata)) {
12078: $metaentry{':'.$meta}=$metaentry{':'.$meta};
12079: $metathesekeys{$meta}=1;
12080: }
12081: }
12082: } else {
12083: #
12084: # Not importing, some other kind of non-package, non-library start tag
12085: #
12086: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
12087: if (defined($token->[2]->{'id'})) {
12088: $unikey.='_'.$token->[2]->{'id'};
12089: }
12090: if (defined($token->[2]->{'name'})) {
12091: $unikey.='_'.$token->[2]->{'name'};
12092: }
12093: $metathesekeys{$unikey}=1;
12094: foreach my $param (@{$token->[3]}) {
12095: $metaentry{':'.$unikey.'.'.$param} =
12096: $token->[2]->{$param};
12097: }
12098: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
12099: my $default=$metaentry{':'.$unikey.'.default'};
12100: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
12101: # only ws inside the tag, and not in default, so use default
12102: # as value
12103: $metaentry{':'.$unikey}=$default;
12104: } elsif ( $internaltext =~ /\S/ ) {
12105: # something interesting inside the tag
12106: $metaentry{':'.$unikey}=$internaltext;
12107: } else {
12108: # no interesting values, don't set a default
12109: }
12110: # end of not-a-package not-a-library import
12111: }
12112: # end of not-a-package start tag
12113: }
12114: # the next is the end of "start tag"
12115: }
12116: }
12117: my ($extension) = ($uri =~ /\.(\w+)$/);
12118: $extension = lc($extension);
12119: if ($extension eq 'htm') { $extension='html'; }
12120:
12121: foreach my $key (keys(%packagetab)) {
12122: #no specific packages #how's our extension
12123: if ($key!~/^extension_\Q$extension\E&/) { next; }
12124: &metadata_create_package_def($uri,$key,'extension_'.$extension,
12125: \%metathesekeys);
12126: }
12127:
12128: if (!exists($metaentry{':packages'})
12129: || $packagetab{"import_defaults&extension_$extension"}) {
12130: foreach my $key (keys(%packagetab)) {
12131: #no specific packages well let's get default then
12132: if ($key!~/^default&/) { next; }
12133: &metadata_create_package_def($uri,$key,'default',
12134: \%metathesekeys);
12135: }
12136: }
12137: # are there custom rights to evaluate
12138: if ($metaentry{':copyright'} eq 'custom') {
12139:
12140: #
12141: # Importing a rights file here
12142: #
12143: unless ($depthcount) {
12144: my $location=$metaentry{':customdistributionfile'};
12145: my $dir=$filename;
12146: $dir=~s|[^/]*$||;
12147: $location=&filelocation($dir,$location);
12148: my $rights_metadata =
12149: &metadata($uri,'keys',$toolsymb,$location,'_rights',
12150: $depthcount+1);
12151: foreach my $rights (split(',',$rights_metadata)) {
12152: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
12153: $metathesekeys{$rights}=1;
12154: }
12155: }
12156: }
12157: # uniqifiy package listing
12158: my %seen;
12159: my @uniq_packages =
12160: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
12161: $metaentry{':packages'} = join(',',@uniq_packages);
12162:
12163: if (($importedresponses) || ($importedparts)) {
12164: if ($importedparts) {
12165: # We had imported parts and need to rebuild partorder
12166: $metaentry{':partorder'}='';
12167: $metathesekeys{'partorder'}=1;
12168: }
12169: if ($importedresponses) {
12170: # We had imported responses and need to rebuil responseorder
12171: $metaentry{':responseorder'}='';
12172: $metathesekeys{'responseorder'}=1;
12173: }
12174: for (my $index=0;$index<$#origfiletagids;$index+=2) {
12175: my $origid = $origfiletagids[$index+1];
12176: if ($origfiletagids[$index] eq 'part') {
12177: # Original part, part of the problem
12178: if ($importedparts) {
12179: $metaentry{':partorder'}.=','.$origid;
12180: }
12181: } elsif ($origfiletagids[$index] eq 'import') {
12182: if ($importedparts) {
12183: # We have imported parts at this position
12184: if ($importedpartids{$origid} ne '') {
12185: $metaentry{':partorder'}.=','.$importedpartids{$origid};
12186: }
12187: }
12188: if ($importedresponses) {
12189: # We have imported responses at this position
12190: if ($importedrespids{$origid} ne '') {
12191: $metaentry{':responseorder'}.=','.$importedrespids{$origid};
12192: }
12193: }
12194: } else {
12195: # Original response item, part of the problem
12196: if ($importedresponses) {
12197: $metaentry{':responseorder'}.=','.$origid;
12198: }
12199: }
12200: }
12201: if ($importedparts) {
12202: $metaentry{':partorder'}=~s/^\,//;
12203: }
12204: if ($importedresponses) {
12205: $metaentry{':responseorder'}=~s/^\,//;
12206: }
12207: }
12208: $metaentry{':keys'} = join(',',keys(%metathesekeys));
12209: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
12210: $metaentry{':allpossiblekeys'}=join(',',keys(%metathesekeys));
12211: unless ($liburi) {
12212: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
12213: }
12214: # this is the end of "was not already recently cached
12215: }
12216: return $metaentry{':'.$what};
12217: }
12218:
12219: sub metadata_create_package_def {
12220: my ($uri,$key,$package,$metathesekeys)=@_;
12221: my ($pack,$name,$subp)=split(/\&/,$key);
12222: if ($subp eq 'default') { next; }
12223:
12224: if (defined($metaentry{':packages'})) {
12225: $metaentry{':packages'}.=','.$package;
12226: } else {
12227: $metaentry{':packages'}=$package;
12228: }
12229: my $value=$packagetab{$key};
12230: my $unikey;
12231: $unikey='parameter_0_'.$name;
12232: $metaentry{':'.$unikey.'.part'}=0;
12233: $$metathesekeys{$unikey}=1;
12234: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
12235: $metaentry{':'.$unikey.'.'.$subp}=$value;
12236: }
12237: if (defined($metaentry{':'.$unikey.'.default'})) {
12238: $metaentry{':'.$unikey}=
12239: $metaentry{':'.$unikey.'.default'};
12240: }
12241: }
12242:
12243: sub metadata_generate_part0 {
12244: my ($metadata,$metacache,$uri) = @_;
12245: my %allnames;
12246: foreach my $metakey (keys(%$metadata)) {
12247: if ($metakey=~/^parameter\_(.*)/) {
12248: my $part=$$metacache{':'.$metakey.'.part'};
12249: my $name=$$metacache{':'.$metakey.'.name'};
12250: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
12251: $allnames{$name}=$part;
12252: }
12253: }
12254: }
12255: foreach my $name (keys(%allnames)) {
12256: $$metadata{"parameter_0_$name"}=1;
12257: my $key=":parameter_0_$name";
12258: $$metacache{"$key.part"}='0';
12259: $$metacache{"$key.name"}=$name;
12260: $$metacache{"$key.type"}=$$metacache{':parameter_'.
12261: $allnames{$name}.'_'.$name.
12262: '.type'};
12263: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
12264: '.display'};
12265: my $expr='[Part: '.$allnames{$name}.']';
12266: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
12267: $$metacache{"$key.display"}=$olddis;
12268: }
12269: }
12270:
12271: # ------------------------------------------------------ Devalidate title cache
12272:
12273: sub devalidate_title_cache {
12274: my ($url)=@_;
12275: if (!$env{'request.course.id'}) { return; }
12276: my $symb=&symbread($url);
12277: if (!$symb) { return; }
12278: my $key=$env{'request.course.id'}."\0".$symb;
12279: &devalidate_cache_new('title',$key);
12280: }
12281:
12282: # ------------------------------------------------- Get the title of a course
12283:
12284: sub current_course_title {
12285: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
12286: }
12287: # ------------------------------------------------- Get the title of a resource
12288:
12289: sub gettitle {
12290: my $urlsymb=shift;
12291: my $symb=&symbread($urlsymb);
12292: if ($symb) {
12293: my $key=$env{'request.course.id'}."\0".$symb;
12294: my ($result,$cached)=&is_cached_new('title',$key);
12295: if (defined($cached)) {
12296: return $result;
12297: }
12298: my ($map,$resid,$url)=&decode_symb($symb);
12299: my $title='';
12300: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
12301: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
12302: } else {
12303: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12304: &GDBM_READER(),0640)) {
12305: my $mapid=$bighash{'map_pc_'.&clutter($map)};
12306: $title=$bighash{'title_'.$mapid.'.'.$resid};
12307: untie(%bighash);
12308: }
12309: }
12310: $title=~s/\&colon\;/\:/gs;
12311: if ($title) {
12312: # Remember both $symb and $title for dynamic metadata
12313: $accesshash{$symb.'___crstitle'}=$title;
12314: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
12315: # Cache this title and then return it
12316: return &do_cache_new('title',$key,$title,600);
12317: }
12318: $urlsymb=$url;
12319: }
12320: my $title=&metadata($urlsymb,'title');
12321: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
12322: return $title;
12323: }
12324:
12325: sub get_slot {
12326: my ($which,$cnum,$cdom)=@_;
12327: if (!$cnum || !$cdom) {
12328: (undef,my $courseid)=&whichuser();
12329: $cdom=$env{'course.'.$courseid.'.domain'};
12330: $cnum=$env{'course.'.$courseid.'.num'};
12331: }
12332: my $key=join("\0",'slots',$cdom,$cnum,$which);
12333: my %slotinfo;
12334: if (exists($remembered{$key})) {
12335: $slotinfo{$which} = $remembered{$key};
12336: } else {
12337: %slotinfo=&get('slots',[$which],$cdom,$cnum);
12338: &Apache::lonhomework::showhash(%slotinfo);
12339: my ($tmp)=keys(%slotinfo);
12340: if ($tmp=~/^error:/) { return (); }
12341: $remembered{$key} = $slotinfo{$which};
12342: }
12343: if (ref($slotinfo{$which}) eq 'HASH') {
12344: return %{$slotinfo{$which}};
12345: }
12346: return $slotinfo{$which};
12347: }
12348:
12349: sub get_reservable_slots {
12350: my ($cnum,$cdom,$uname,$udom) = @_;
12351: my $now = time;
12352: my $reservable_info;
12353: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
12354: if (exists($remembered{$key})) {
12355: $reservable_info = $remembered{$key};
12356: } else {
12357: my %resv;
12358: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
12359: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
12360: $reservable_info = \%resv;
12361: $remembered{$key} = $reservable_info;
12362: }
12363: return $reservable_info;
12364: }
12365:
12366: sub get_course_slots {
12367: my ($cnum,$cdom) = @_;
12368: my $hashid=$cnum.':'.$cdom;
12369: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
12370: if (defined($cached)) {
12371: if (ref($result) eq 'HASH') {
12372: return %{$result};
12373: }
12374: } else {
12375: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
12376: my ($tmp) = keys(%slots);
12377: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
12378: &do_cache_new('allslots',$hashid,\%slots,600);
12379: return %slots;
12380: }
12381: }
12382: return;
12383: }
12384:
12385: sub devalidate_slots_cache {
12386: my ($cnum,$cdom)=@_;
12387: my $hashid=$cnum.':'.$cdom;
12388: &devalidate_cache_new('allslots',$hashid);
12389: }
12390:
12391: sub get_coursechange {
12392: my ($cdom,$cnum) = @_;
12393: if ($cdom eq '' || $cnum eq '') {
12394: return unless ($env{'request.course.id'});
12395: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
12396: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
12397: }
12398: my $hashid=$cdom.'_'.$cnum;
12399: my ($change,$cached)=&is_cached_new('crschange',$hashid);
12400: if ((defined($cached)) && ($change ne '')) {
12401: return $change;
12402: } else {
12403: my %crshash;
12404: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
12405: if ($crshash{'internal.contentchange'} eq '') {
12406: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
12407: if ($change eq '') {
12408: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
12409: $change = $crshash{'internal.created'};
12410: }
12411: } else {
12412: $change = $crshash{'internal.contentchange'};
12413: }
12414: my $cachetime = 600;
12415: &do_cache_new('crschange',$hashid,$change,$cachetime);
12416: }
12417: return $change;
12418: }
12419:
12420: sub devalidate_coursechange_cache {
12421: my ($cnum,$cdom)=@_;
12422: my $hashid=$cnum.':'.$cdom;
12423: &devalidate_cache_new('crschange',$hashid);
12424: }
12425:
12426: # ------------------------------------------------- Update symbolic store links
12427:
12428: sub symblist {
12429: my ($mapname,%newhash)=@_;
12430: $mapname=&deversion(&declutter($mapname));
12431: my %hash;
12432: if (($env{'request.course.fn'}) && (%newhash)) {
12433: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
12434: &GDBM_WRCREAT(),0640)) {
12435: foreach my $url (keys(%newhash)) {
12436: next if ($url eq 'last_known'
12437: && $env{'form.no_update_last_known'});
12438: $hash{declutter($url)}=&encode_symb($mapname,
12439: $newhash{$url}->[1],
12440: $newhash{$url}->[0]);
12441: }
12442: if (untie(%hash)) {
12443: return 'ok';
12444: }
12445: }
12446: }
12447: return 'error';
12448: }
12449:
12450: # --------------------------------------------------------------- Verify a symb
12451:
12452: sub symbverify {
12453: my ($symb,$thisurl,$encstate)=@_;
12454: my $thisfn=$thisurl;
12455: $thisfn=&declutter($thisfn);
12456: # direct jump to resource in page or to a sequence - will construct own symbs
12457: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
12458: # check URL part
12459: my ($map,$resid,$url)=&decode_symb($symb);
12460:
12461: unless ($url eq $thisfn) { return 0; }
12462:
12463: $symb=&symbclean($symb);
12464: $thisurl=&deversion($thisurl);
12465: $thisfn=&deversion($thisfn);
12466:
12467: my %bighash;
12468: my $okay=0;
12469:
12470: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12471: &GDBM_READER(),0640)) {
12472: my $noclutter;
12473: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
12474: $thisurl =~ s/\?.+$//;
12475: if ($map =~ m{^uploaded/.+\.page$}) {
12476: $thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
12477: $thisurl =~ s{^\Qhttp://https://\E}{https://};
12478: $noclutter = 1;
12479: }
12480: }
12481: my $ids;
12482: if ($noclutter) {
12483: $ids=$bighash{'ids_'.$thisurl};
12484: } else {
12485: $ids=$bighash{'ids_'.&clutter($thisurl)};
12486: }
12487: unless ($ids) {
12488: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
12489: $ids=$bighash{$idkey};
12490: }
12491: if ($ids) {
12492: # ------------------------------------------------------------------- Has ID(s)
12493: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
12494: $symb =~ s/\?.+$//;
12495: }
12496: foreach my $id (split(/\,/,$ids)) {
12497: my ($mapid,$resid)=split(/\./,$id);
12498: if (
12499: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
12500: eq $symb) {
12501: if (ref($encstate)) {
12502: $$encstate = $bighash{'encrypted_'.$id};
12503: }
12504: if (($env{'request.role.adv'}) ||
12505: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
12506: ($thisurl eq '/adm/navmaps')) {
12507: $okay=1;
12508: last;
12509: }
12510: }
12511: }
12512: }
12513: untie(%bighash);
12514: }
12515: return $okay;
12516: }
12517:
12518: # --------------------------------------------------------------- Clean-up symb
12519:
12520: sub symbclean {
12521: my $symb=shift;
12522: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
12523: # remove version from map
12524: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
12525:
12526: # remove version from URL
12527: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
12528:
12529: # remove wrapper
12530:
12531: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
12532: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
12533: return $symb;
12534: }
12535:
12536: # ---------------------------------------------- Split symb to find map and url
12537:
12538: sub encode_symb {
12539: my ($map,$resid,$url)=@_;
12540: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
12541: }
12542:
12543: sub decode_symb {
12544: my $symb=shift;
12545: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
12546: my ($map,$resid,$url)=split(/___/,$symb);
12547: return (&fixversion($map),$resid,&fixversion($url));
12548: }
12549:
12550: sub fixversion {
12551: my $fn=shift;
12552: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
12553: my %bighash;
12554: my $uri=&clutter($fn);
12555: my $key=$env{'request.course.id'}.'_'.$uri;
12556: # is this cached?
12557: my ($result,$cached)=&is_cached_new('courseresversion',$key);
12558: if (defined($cached)) { return $result; }
12559: # unfortunately not cached, or expired
12560: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12561: &GDBM_READER(),0640)) {
12562: if ($bighash{'version_'.$uri}) {
12563: my $version=$bighash{'version_'.$uri};
12564: unless (($version eq 'mostrecent') ||
12565: ($version==&getversion($uri))) {
12566: $uri=~s/\.(\w+)$/\.$version\.$1/;
12567: }
12568: }
12569: untie %bighash;
12570: }
12571: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
12572: }
12573:
12574: sub deversion {
12575: my $url=shift;
12576: $url=~s/\.\d+\.(\w+)$/\.$1/;
12577: return $url;
12578: }
12579:
12580: # ------------------------------------------------------ Return symb list entry
12581:
12582: sub symbread {
12583: my ($thisfn,$donotrecurse,$ignorecachednull,$checkforblock,$possibles)=@_;
12584: my $cache_str='request.symbread.cached.'.$thisfn;
12585: if (defined($env{$cache_str})) {
12586: if ($ignorecachednull) {
12587: return $env{$cache_str} unless ($env{$cache_str} eq '');
12588: } else {
12589: return $env{$cache_str};
12590: }
12591: }
12592: # no filename provided? try from environment
12593: unless ($thisfn) {
12594: if ($env{'request.symb'}) {
12595: return $env{$cache_str}=&symbclean($env{'request.symb'});
12596: }
12597: $thisfn=$env{'request.filename'};
12598: }
12599: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
12600: # is that filename actually a symb? Verify, clean, and return
12601: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
12602: if (&symbverify($thisfn,$1)) {
12603: return $env{$cache_str}=&symbclean($thisfn);
12604: }
12605: }
12606: $thisfn=declutter($thisfn);
12607: my %hash;
12608: my %bighash;
12609: my $syval='';
12610: if (($env{'request.course.fn'}) && ($thisfn)) {
12611: my $targetfn = $thisfn;
12612: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
12613: $targetfn = 'adm/wrapper/'.$thisfn;
12614: }
12615: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
12616: $targetfn=$1;
12617: }
12618: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
12619: &GDBM_READER(),0640)) {
12620: $syval=$hash{$targetfn};
12621: untie(%hash);
12622: }
12623: # ---------------------------------------------------------- There was an entry
12624: if ($syval) {
12625: #unless ($syval=~/\_\d+$/) {
12626: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
12627: #&appenv({'request.ambiguous' => $thisfn});
12628: #return $env{$cache_str}='';
12629: #}
12630: #$syval.=$1;
12631: #}
12632: } else {
12633: # ------------------------------------------------------- Was not in symb table
12634: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12635: &GDBM_READER(),0640)) {
12636: # ---------------------------------------------- Get ID(s) for current resource
12637: my $ids=$bighash{'ids_'.&clutter($thisfn)};
12638: unless ($ids) {
12639: $ids=$bighash{'ids_/'.$thisfn};
12640: }
12641: unless ($ids) {
12642: # alias?
12643: $ids=$bighash{'mapalias_'.$thisfn};
12644: }
12645: if ($ids) {
12646: # ------------------------------------------------------------------- Has ID(s)
12647: my @possibilities=split(/\,/,$ids);
12648: if ($#possibilities==0) {
12649: # ----------------------------------------------- There is only one possibility
12650: my ($mapid,$resid)=split(/\./,$ids);
12651: $syval=&encode_symb($bighash{'map_id_'.$mapid},
12652: $resid,$thisfn);
12653: if (ref($possibles) eq 'HASH') {
12654: $possibles->{$syval} = 1;
12655: }
12656: if ($checkforblock) {
12657: my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids});
12658: if (@blockers) {
12659: $syval = '';
12660: return;
12661: }
12662: }
12663: } elsif ((!$donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
12664: # ------------------------------------------ There is more than one possibility
12665: my $realpossible=0;
12666: foreach my $id (@possibilities) {
12667: my $file=$bighash{'src_'.$id};
12668: my $canaccess;
12669: if (($donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
12670: $canaccess = 1;
12671: } else {
12672: $canaccess = &allowed('bre',$file);
12673: }
12674: if ($canaccess) {
12675: my ($mapid,$resid)=split(/\./,$id);
12676: if ($bighash{'map_type_'.$mapid} ne 'page') {
12677: my $poss_syval=&encode_symb($bighash{'map_id_'.$mapid},
12678: $resid,$thisfn);
12679: if (ref($possibles) eq 'HASH') {
12680: $possibles->{$syval} = 1;
12681: }
12682: if ($checkforblock) {
12683: my @blockers = &has_comm_blocking('bre',$poss_syval,$file);
12684: unless (@blockers > 0) {
12685: $syval = $poss_syval;
12686: $realpossible++;
12687: }
12688: } else {
12689: $syval = $poss_syval;
12690: $realpossible++;
12691: }
12692: }
12693: }
12694: }
12695: if ($realpossible!=1) { $syval=''; }
12696: } else {
12697: $syval='';
12698: }
12699: }
12700: untie(%bighash);
12701: }
12702: }
12703: if ($syval) {
12704: return $env{$cache_str}=$syval;
12705: }
12706: }
12707: &appenv({'request.ambiguous' => $thisfn});
12708: return $env{$cache_str}='';
12709: }
12710:
12711: # ---------------------------------------------------------- Return random seed
12712:
12713: sub numval {
12714: my $txt=shift;
12715: $txt=~tr/A-J/0-9/;
12716: $txt=~tr/a-j/0-9/;
12717: $txt=~tr/K-T/0-9/;
12718: $txt=~tr/k-t/0-9/;
12719: $txt=~tr/U-Z/0-5/;
12720: $txt=~tr/u-z/0-5/;
12721: $txt=~s/\D//g;
12722: if ($_64bit) { if ($txt > 2**32) { return -1; } }
12723: return int($txt);
12724: }
12725:
12726: sub numval2 {
12727: my $txt=shift;
12728: $txt=~tr/A-J/0-9/;
12729: $txt=~tr/a-j/0-9/;
12730: $txt=~tr/K-T/0-9/;
12731: $txt=~tr/k-t/0-9/;
12732: $txt=~tr/U-Z/0-5/;
12733: $txt=~tr/u-z/0-5/;
12734: $txt=~s/\D//g;
12735: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
12736: my $total;
12737: foreach my $val (@txts) { $total+=$val; }
12738: if ($_64bit) { if ($total > 2**32) { return -1; } }
12739: return int($total);
12740: }
12741:
12742: sub numval3 {
12743: use integer;
12744: my $txt=shift;
12745: $txt=~tr/A-J/0-9/;
12746: $txt=~tr/a-j/0-9/;
12747: $txt=~tr/K-T/0-9/;
12748: $txt=~tr/k-t/0-9/;
12749: $txt=~tr/U-Z/0-5/;
12750: $txt=~tr/u-z/0-5/;
12751: $txt=~s/\D//g;
12752: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
12753: my $total;
12754: foreach my $val (@txts) { $total+=$val; }
12755: if ($_64bit) { $total=(($total<<32)>>32); }
12756: return $total;
12757: }
12758:
12759: sub digest {
12760: my ($data)=@_;
12761: my $digest=&Digest::MD5::md5($data);
12762: my ($a,$b,$c,$d)=unpack("iiii",$digest);
12763: my ($e,$f);
12764: {
12765: use integer;
12766: $e=($a+$b);
12767: $f=($c+$d);
12768: if ($_64bit) {
12769: $e=(($e<<32)>>32);
12770: $f=(($f<<32)>>32);
12771: }
12772: }
12773: if (wantarray) {
12774: return ($e,$f);
12775: } else {
12776: my $g;
12777: {
12778: use integer;
12779: $g=($e+$f);
12780: if ($_64bit) {
12781: $g=(($g<<32)>>32);
12782: }
12783: }
12784: return $g;
12785: }
12786: }
12787:
12788: sub latest_rnd_algorithm_id {
12789: return '64bit5';
12790: }
12791:
12792: sub get_rand_alg {
12793: my ($courseid)=@_;
12794: if (!$courseid) { $courseid=(&whichuser())[1]; }
12795: if ($courseid) {
12796: return $env{"course.$courseid.rndseed"};
12797: }
12798: return &latest_rnd_algorithm_id();
12799: }
12800:
12801: sub validCODE {
12802: my ($CODE)=@_;
12803: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
12804: return 0;
12805: }
12806:
12807: sub getCODE {
12808: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
12809: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
12810: defined($Apache::lonhomework::parsing_a_task) ) &&
12811: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
12812: return $Apache::lonhomework::history{'resource.CODE'};
12813: }
12814: return undef;
12815: }
12816: #
12817: # Determines the random seed for a specific context:
12818: #
12819: # parameters:
12820: # symb - in course context the symb for the seed.
12821: # course_id - The course id of the form domain_coursenum.
12822: # domain - Domain for the user.
12823: # course - Course for the user.
12824: # cenv - environment of the course.
12825: #
12826: # NOTE:
12827: # All parameters are picked out of the environment if missing
12828: # or not defined.
12829: # If a symb cannot be determined the current time is used instead.
12830: #
12831: # For a given well defined symb, courside, domain, username,
12832: # and course environment, the seed is reproducible.
12833: #
12834: sub rndseed {
12835: my ($symb,$courseid,$domain,$username, $cenv)=@_;
12836: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
12837: if (!defined($symb)) {
12838: unless ($symb=$wsymb) { return time; }
12839: }
12840: if (!defined $courseid) {
12841: $courseid=$wcourseid;
12842: }
12843: if (!defined $domain) { $domain=$wdomain; }
12844: if (!defined $username) { $username=$wusername }
12845:
12846: my $which;
12847: if (defined($cenv->{'rndseed'})) {
12848: $which = $cenv->{'rndseed'};
12849: } else {
12850: $which =&get_rand_alg($courseid);
12851: }
12852: if (defined(&getCODE())) {
12853:
12854: if ($which eq '64bit5') {
12855: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
12856: } elsif ($which eq '64bit4') {
12857: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
12858: } else {
12859: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
12860: }
12861: } elsif ($which eq '64bit5') {
12862: return &rndseed_64bit5($symb,$courseid,$domain,$username);
12863: } elsif ($which eq '64bit4') {
12864: return &rndseed_64bit4($symb,$courseid,$domain,$username);
12865: } elsif ($which eq '64bit3') {
12866: return &rndseed_64bit3($symb,$courseid,$domain,$username);
12867: } elsif ($which eq '64bit2') {
12868: return &rndseed_64bit2($symb,$courseid,$domain,$username);
12869: } elsif ($which eq '64bit') {
12870: return &rndseed_64bit($symb,$courseid,$domain,$username);
12871: }
12872: return &rndseed_32bit($symb,$courseid,$domain,$username);
12873: }
12874:
12875: sub rndseed_32bit {
12876: my ($symb,$courseid,$domain,$username)=@_;
12877: {
12878: use integer;
12879: my $symbchck=unpack("%32C*",$symb) << 27;
12880: my $symbseed=numval($symb) << 22;
12881: my $namechck=unpack("%32C*",$username) << 17;
12882: my $nameseed=numval($username) << 12;
12883: my $domainseed=unpack("%32C*",$domain) << 7;
12884: my $courseseed=unpack("%32C*",$courseid);
12885: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
12886: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
12887: #&logthis("rndseed :$num:$symb");
12888: if ($_64bit) { $num=(($num<<32)>>32); }
12889: return $num;
12890: }
12891: }
12892:
12893: sub rndseed_64bit {
12894: my ($symb,$courseid,$domain,$username)=@_;
12895: {
12896: use integer;
12897: my $symbchck=unpack("%32S*",$symb) << 21;
12898: my $symbseed=numval($symb) << 10;
12899: my $namechck=unpack("%32S*",$username);
12900:
12901: my $nameseed=numval($username) << 21;
12902: my $domainseed=unpack("%32S*",$domain) << 10;
12903: my $courseseed=unpack("%32S*",$courseid);
12904:
12905: my $num1=$symbchck+$symbseed+$namechck;
12906: my $num2=$nameseed+$domainseed+$courseseed;
12907: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
12908: #&logthis("rndseed :$num:$symb");
12909: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
12910: return "$num1,$num2";
12911: }
12912: }
12913:
12914: sub rndseed_64bit2 {
12915: my ($symb,$courseid,$domain,$username)=@_;
12916: {
12917: use integer;
12918: # strings need to be an even # of cahracters long, it it is odd the
12919: # last characters gets thrown away
12920: my $symbchck=unpack("%32S*",$symb.' ') << 21;
12921: my $symbseed=numval($symb) << 10;
12922: my $namechck=unpack("%32S*",$username.' ');
12923:
12924: my $nameseed=numval($username) << 21;
12925: my $domainseed=unpack("%32S*",$domain.' ') << 10;
12926: my $courseseed=unpack("%32S*",$courseid.' ');
12927:
12928: my $num1=$symbchck+$symbseed+$namechck;
12929: my $num2=$nameseed+$domainseed+$courseseed;
12930: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
12931: #&logthis("rndseed :$num:$symb");
12932: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
12933: return "$num1,$num2";
12934: }
12935: }
12936:
12937: sub rndseed_64bit3 {
12938: my ($symb,$courseid,$domain,$username)=@_;
12939: {
12940: use integer;
12941: # strings need to be an even # of cahracters long, it it is odd the
12942: # last characters gets thrown away
12943: my $symbchck=unpack("%32S*",$symb.' ') << 21;
12944: my $symbseed=numval2($symb) << 10;
12945: my $namechck=unpack("%32S*",$username.' ');
12946:
12947: my $nameseed=numval2($username) << 21;
12948: my $domainseed=unpack("%32S*",$domain.' ') << 10;
12949: my $courseseed=unpack("%32S*",$courseid.' ');
12950:
12951: my $num1=$symbchck+$symbseed+$namechck;
12952: my $num2=$nameseed+$domainseed+$courseseed;
12953: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
12954: #&logthis("rndseed :$num1:$num2:$_64bit");
12955: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
12956:
12957: return "$num1:$num2";
12958: }
12959: }
12960:
12961: sub rndseed_64bit4 {
12962: my ($symb,$courseid,$domain,$username)=@_;
12963: {
12964: use integer;
12965: # strings need to be an even # of cahracters long, it it is odd the
12966: # last characters gets thrown away
12967: my $symbchck=unpack("%32S*",$symb.' ') << 21;
12968: my $symbseed=numval3($symb) << 10;
12969: my $namechck=unpack("%32S*",$username.' ');
12970:
12971: my $nameseed=numval3($username) << 21;
12972: my $domainseed=unpack("%32S*",$domain.' ') << 10;
12973: my $courseseed=unpack("%32S*",$courseid.' ');
12974:
12975: my $num1=$symbchck+$symbseed+$namechck;
12976: my $num2=$nameseed+$domainseed+$courseseed;
12977: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
12978: #&logthis("rndseed :$num1:$num2:$_64bit");
12979: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
12980:
12981: return "$num1:$num2";
12982: }
12983: }
12984:
12985: sub rndseed_64bit5 {
12986: my ($symb,$courseid,$domain,$username)=@_;
12987: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
12988: return "$num1:$num2";
12989: }
12990:
12991: sub rndseed_CODE_64bit {
12992: my ($symb,$courseid,$domain,$username)=@_;
12993: {
12994: use integer;
12995: my $symbchck=unpack("%32S*",$symb.' ') << 16;
12996: my $symbseed=numval2($symb);
12997: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
12998: my $CODEseed=numval(&getCODE());
12999: my $courseseed=unpack("%32S*",$courseid.' ');
13000: my $num1=$symbseed+$CODEchck;
13001: my $num2=$CODEseed+$courseseed+$symbchck;
13002: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
13003: #&logthis("rndseed :$num1:$num2:$symb");
13004: if ($_64bit) { $num1=(($num1<<32)>>32); }
13005: if ($_64bit) { $num2=(($num2<<32)>>32); }
13006: return "$num1:$num2";
13007: }
13008: }
13009:
13010: sub rndseed_CODE_64bit4 {
13011: my ($symb,$courseid,$domain,$username)=@_;
13012: {
13013: use integer;
13014: my $symbchck=unpack("%32S*",$symb.' ') << 16;
13015: my $symbseed=numval3($symb);
13016: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
13017: my $CODEseed=numval3(&getCODE());
13018: my $courseseed=unpack("%32S*",$courseid.' ');
13019: my $num1=$symbseed+$CODEchck;
13020: my $num2=$CODEseed+$courseseed+$symbchck;
13021: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
13022: #&logthis("rndseed :$num1:$num2:$symb");
13023: if ($_64bit) { $num1=(($num1<<32)>>32); }
13024: if ($_64bit) { $num2=(($num2<<32)>>32); }
13025: return "$num1:$num2";
13026: }
13027: }
13028:
13029: sub rndseed_CODE_64bit5 {
13030: my ($symb,$courseid,$domain,$username)=@_;
13031: my $code = &getCODE();
13032: my ($num1,$num2)=&digest("$symb,$courseid,$code");
13033: return "$num1:$num2";
13034: }
13035:
13036: sub setup_random_from_rndseed {
13037: my ($rndseed)=@_;
13038: if ($rndseed =~/([,:])/) {
13039: my ($num1,$num2) = map { abs($_); } (split(/[,:]/,$rndseed));
13040: if ((!$num1) || (!$num2) || ($num1 > 2147483562) || ($num2 > 2147483398)) {
13041: &Math::Random::random_set_seed_from_phrase($rndseed);
13042: } else {
13043: &Math::Random::random_set_seed($num1,$num2);
13044: }
13045: } else {
13046: &Math::Random::random_set_seed_from_phrase($rndseed);
13047: }
13048: }
13049:
13050: sub latest_receipt_algorithm_id {
13051: return 'receipt3';
13052: }
13053:
13054: sub recunique {
13055: my $fucourseid=shift;
13056: my $unique;
13057: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
13058: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
13059: $unique=$env{"course.$fucourseid.internal.encseed"};
13060: } else {
13061: $unique=$perlvar{'lonReceipt'};
13062: }
13063: return unpack("%32C*",$unique);
13064: }
13065:
13066: sub recprefix {
13067: my $fucourseid=shift;
13068: my $prefix;
13069: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
13070: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
13071: $prefix=$env{"course.$fucourseid.internal.encpref"};
13072: } else {
13073: $prefix=$perlvar{'lonHostID'};
13074: }
13075: return unpack("%32C*",$prefix);
13076: }
13077:
13078: sub ireceipt {
13079: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
13080:
13081: my $return =&recprefix($fucourseid).'-';
13082:
13083: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
13084: $env{'request.state'} eq 'construct') {
13085: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
13086: return $return;
13087: }
13088:
13089: my $cuname=unpack("%32C*",$funame);
13090: my $cudom=unpack("%32C*",$fudom);
13091: my $cucourseid=unpack("%32C*",$fucourseid);
13092: my $cusymb=unpack("%32C*",$fusymb);
13093: my $cunique=&recunique($fucourseid);
13094: my $cpart=unpack("%32S*",$part);
13095: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
13096:
13097: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
13098:
13099: $return.= ($cunique%$cuname+
13100: $cunique%$cudom+
13101: $cusymb%$cuname+
13102: $cusymb%$cudom+
13103: $cucourseid%$cuname+
13104: $cucourseid%$cudom+
13105: $cpart%$cuname+
13106: $cpart%$cudom);
13107: } else {
13108: $return.= ($cunique%$cuname+
13109: $cunique%$cudom+
13110: $cusymb%$cuname+
13111: $cusymb%$cudom+
13112: $cucourseid%$cuname+
13113: $cucourseid%$cudom);
13114: }
13115: return $return;
13116: }
13117:
13118: sub receipt {
13119: my ($part)=@_;
13120: my ($symb,$courseid,$domain,$name) = &whichuser();
13121: return &ireceipt($name,$domain,$courseid,$symb,$part);
13122: }
13123:
13124: sub whichuser {
13125: my ($passedsymb)=@_;
13126: my ($symb,$courseid,$domain,$name,$publicuser);
13127: if (defined($env{'form.grade_symb'})) {
13128: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
13129: my $allowed=&allowed('vgr',$tmp_courseid);
13130: if (!$allowed &&
13131: exists($env{'request.course.sec'}) &&
13132: $env{'request.course.sec'} !~ /^\s*$/) {
13133: $allowed=&allowed('vgr',$tmp_courseid.
13134: '/'.$env{'request.course.sec'});
13135: }
13136: if ($allowed) {
13137: ($symb)=&get_env_multiple('form.grade_symb');
13138: $courseid=$tmp_courseid;
13139: ($domain)=&get_env_multiple('form.grade_domain');
13140: ($name)=&get_env_multiple('form.grade_username');
13141: return ($symb,$courseid,$domain,$name,$publicuser);
13142: }
13143: }
13144: if (!$passedsymb) {
13145: $symb=&symbread();
13146: } else {
13147: $symb=$passedsymb;
13148: }
13149: $courseid=$env{'request.course.id'};
13150: $domain=$env{'user.domain'};
13151: $name=$env{'user.name'};
13152: if ($name eq 'public' && $domain eq 'public') {
13153: if (!defined($env{'form.username'})) {
13154: $env{'form.username'}.=time.rand(10000000);
13155: }
13156: $name.=$env{'form.username'};
13157: }
13158: return ($symb,$courseid,$domain,$name,$publicuser);
13159:
13160: }
13161:
13162: # ------------------------------------------------------------ Serves up a file
13163: # returns either the contents of the file or
13164: # -1 if the file doesn't exist
13165: #
13166: # if the target is a file that was uploaded via DOCS,
13167: # a check will be made to see if a current copy exists on the local server,
13168: # if it does this will be served, otherwise a copy will be retrieved from
13169: # the home server for the course and stored in /home/httpd/html/userfiles on
13170: # the local server.
13171:
13172: sub getfile {
13173: my ($file) = @_;
13174: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
13175: &repcopy($file);
13176: return &readfile($file);
13177: }
13178:
13179: sub repcopy_userfile {
13180: my ($file)=@_;
13181: my $londocroot = $perlvar{'lonDocRoot'};
13182: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
13183: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
13184: my ($cdom,$cnum,$filename) =
13185: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
13186: my $uri="/uploaded/$cdom/$cnum/$filename";
13187: if (-e "$file") {
13188: # we already have a local copy, check it out
13189: my @fileinfo = stat($file);
13190: my $rtncode;
13191: my $info;
13192: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
13193: if ($lwpresp ne 'ok') {
13194: # there is no such file anymore, even though we had a local copy
13195: if ($rtncode eq '404') {
13196: unlink($file);
13197: }
13198: return -1;
13199: }
13200: if ($info < $fileinfo[9]) {
13201: # nice, the file we have is up-to-date, just say okay
13202: return 'ok';
13203: } else {
13204: # the file is outdated, get rid of it
13205: unlink($file);
13206: }
13207: }
13208: # one way or the other, at this point, we don't have the file
13209: # construct the correct path for the file
13210: my @parts = ($cdom,$cnum);
13211: if ($filename =~ m|^(.+)/[^/]+$|) {
13212: push @parts, split(/\//,$1);
13213: }
13214: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
13215: foreach my $part (@parts) {
13216: $path .= '/'.$part;
13217: if (!-e $path) {
13218: mkdir($path,0770);
13219: }
13220: }
13221: # now the path exists for sure
13222: # get a user agent
13223: my $transferfile=$file.'.in.transfer';
13224: # FIXME: this should flock
13225: if (-e $transferfile) { return 'ok'; }
13226: my $request;
13227: $uri=~s/^\///;
13228: my $homeserver = &homeserver($cnum,$cdom);
13229: my $protocol = $protocol{$homeserver};
13230: $protocol = 'http' if ($protocol ne 'https');
13231: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
13232: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,$transferfile,\%perlvar,'',0,1);
13233: # did it work?
13234: if ($response->is_error()) {
13235: unlink($transferfile);
13236: &logthis("Userfile repcopy failed for $uri");
13237: return -1;
13238: }
13239: # worked, rename the transfer file
13240: rename($transferfile,$file);
13241: return 'ok';
13242: }
13243:
13244: sub tokenwrapper {
13245: my $uri=shift;
13246: $uri=~s|^https?\://([^/]+)||;
13247: $uri=~s|^/||;
13248: $env{'user.environment'}=~/\/([^\/]+)\.id/;
13249: my $token=$1;
13250: my (undef,$udom,$uname,$file)=split('/',$uri,4);
13251: if ($udom && $uname && $file) {
13252: $file=~s|(\?\.*)*$||;
13253: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
13254: my $homeserver = &homeserver($uname,$udom);
13255: my $protocol = $protocol{$homeserver};
13256: $protocol = 'http' if ($protocol ne 'https');
13257: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
13258: (($uri=~/\?/)?'&':'?').'token='.$token.
13259: '&tokenissued='.$perlvar{'lonHostID'};
13260: } else {
13261: return '/adm/notfound.html';
13262: }
13263: }
13264:
13265: # call with reqtype HEAD: get last modification time
13266: # call with reqtype GET: get the file contents
13267: # Do not call this with reqtype GET for large files! It loads everything into memory
13268: #
13269: sub getuploaded {
13270: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
13271: $uri=~s/^\///;
13272: my $homeserver = &homeserver($cnum,$cdom);
13273: my $protocol = $protocol{$homeserver};
13274: $protocol = 'http' if ($protocol ne 'https');
13275: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
13276: my $request=new HTTP::Request($reqtype,$uri);
13277: my $response=&LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,'',0,1);
13278: $$rtncode = $response->code;
13279: if (! $response->is_success()) {
13280: return 'failed';
13281: }
13282: if ($reqtype eq 'HEAD') {
13283: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
13284: } elsif ($reqtype eq 'GET') {
13285: $$info = $response->content;
13286: }
13287: return 'ok';
13288: }
13289:
13290: sub readfile {
13291: my $file = shift;
13292: if ( (! -e $file ) || ($file eq '') ) { return -1; };
13293: my $fh;
13294: open($fh,"<",$file);
13295: my $a='';
13296: while (my $line = <$fh>) { $a .= $line; }
13297: return $a;
13298: }
13299:
13300: sub filelocation {
13301: my ($dir,$file) = @_;
13302: my $location;
13303: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
13304:
13305: if ($file =~ m-^/adm/-) {
13306: $file=~s-^/adm/wrapper/-/-;
13307: $file=~s-^/adm/coursedocs/showdoc/-/-;
13308: }
13309:
13310: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
13311: $location = $file;
13312: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
13313: my ($udom,$uname,$filename)=
13314: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
13315: my $home=&homeserver($uname,$udom);
13316: my $is_me=0;
13317: my @ids=¤t_machine_ids();
13318: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
13319: if ($is_me) {
13320: $location=propath($udom,$uname).'/userfiles/'.$filename;
13321: } else {
13322: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
13323: $udom.'/'.$uname.'/'.$filename;
13324: }
13325: } elsif ($file =~ m-^/adm/-) {
13326: $location = $perlvar{'lonDocRoot'}.'/'.$file;
13327: } else {
13328: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
13329: $file=~s:^/(res|priv)/:/:;
13330: my $space=$1;
13331: if ( !( $file =~ m:^/:) ) {
13332: $location = $dir. '/'.$file;
13333: } else {
13334: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
13335: }
13336: }
13337: $location=~s://+:/:g; # remove duplicate /
13338: while ($location=~m{/\.\./}) {
13339: if ($location =~ m{/[^/]+/\.\./}) {
13340: $location=~ s{/[^/]+/\.\./}{/}g;
13341: } else {
13342: $location=~ s{/\.\./}{/}g;
13343: }
13344: } #remove dir/..
13345: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
13346: return $location;
13347: }
13348:
13349: sub hreflocation {
13350: my ($dir,$file)=@_;
13351: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
13352: $file=filelocation($dir,$file);
13353: } elsif ($file=~m-^/adm/-) {
13354: $file=~s-^/adm/wrapper/-/-;
13355: $file=~s-^/adm/coursedocs/showdoc/-/-;
13356: }
13357: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
13358: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
13359: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
13360: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
13361: {/uploaded/$1/$2/}x;
13362: }
13363: if ($file=~ m{^/userfiles/}) {
13364: $file =~ s{^/userfiles/}{/uploaded/};
13365: }
13366: return $file;
13367: }
13368:
13369:
13370:
13371:
13372:
13373: sub current_machine_domains {
13374: return &machine_domains(&hostname($perlvar{'lonHostID'}));
13375: }
13376:
13377: sub machine_domains {
13378: my ($hostname) = @_;
13379: my @domains;
13380: my %hostname = &all_hostnames();
13381: while( my($id, $name) = each(%hostname)) {
13382: # &logthis("-$id-$name-$hostname-");
13383: if ($hostname eq $name) {
13384: push(@domains,&host_domain($id));
13385: }
13386: }
13387: return @domains;
13388: }
13389:
13390: sub current_machine_ids {
13391: return &machine_ids(&hostname($perlvar{'lonHostID'}));
13392: }
13393:
13394: sub machine_ids {
13395: my ($hostname) = @_;
13396: $hostname ||= &hostname($perlvar{'lonHostID'});
13397: my @ids;
13398: my %name_to_host = &all_names();
13399: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
13400: return @{ $name_to_host{$hostname} };
13401: }
13402: return;
13403: }
13404:
13405: sub additional_machine_domains {
13406: my @domains;
13407: open(my $fh,"<","$perlvar{'lonTabDir'}/expected_domains.tab");
13408: while( my $line = <$fh>) {
13409: $line =~ s/\s//g;
13410: push(@domains,$line);
13411: }
13412: return @domains;
13413: }
13414:
13415: sub default_login_domain {
13416: my $domain = $perlvar{'lonDefDomain'};
13417: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
13418: foreach my $posdom (¤t_machine_domains(),
13419: &additional_machine_domains()) {
13420: if (lc($posdom) eq lc($testdomain)) {
13421: $domain=$posdom;
13422: last;
13423: }
13424: }
13425: return $domain;
13426: }
13427:
13428: # ------------------------------------------------------------- Declutters URLs
13429:
13430: sub declutter {
13431: my $thisfn=shift;
13432: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
13433: unless ($thisfn=~m{^/home/httpd/html/priv/}) {
13434: $thisfn=~s{^/home/httpd/html}{};
13435: }
13436: $thisfn=~s/^\///;
13437: $thisfn=~s|^adm/wrapper/||;
13438: $thisfn=~s|^adm/coursedocs/showdoc/||;
13439: $thisfn=~s/^res\///;
13440: $thisfn=~s/^priv\///;
13441: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
13442: $thisfn=~s/\?.+$//;
13443: }
13444: return $thisfn;
13445: }
13446:
13447: # ------------------------------------------------------------- Clutter up URLs
13448:
13449: sub clutter {
13450: my $thisfn='/'.&declutter(shift);
13451: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
13452: || $thisfn =~ m{^/adm/(includes|pages)} ) {
13453: $thisfn='/res'.$thisfn;
13454: }
13455: if ($thisfn !~m|^/adm|) {
13456: if ($thisfn =~ m|^/ext/|) {
13457: $thisfn='/adm/wrapper'.$thisfn;
13458: } else {
13459: my ($ext) = ($thisfn =~ /\.(\w+)$/);
13460: my $embstyle=&Apache::loncommon::fileembstyle($ext);
13461: if ($embstyle eq 'ssi'
13462: || ($embstyle eq 'hdn')
13463: || ($embstyle eq 'rat')
13464: || ($embstyle eq 'prv')
13465: || ($embstyle eq 'ign')) {
13466: #do nothing with these
13467: } elsif (($embstyle eq 'img')
13468: || ($embstyle eq 'emb')
13469: || ($embstyle eq 'wrp')) {
13470: $thisfn='/adm/wrapper'.$thisfn;
13471: } elsif ($embstyle eq 'unk'
13472: && $thisfn!~/\.(sequence|page)$/) {
13473: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
13474: } else {
13475: # &logthis("Got a blank emb style");
13476: }
13477: }
13478: } elsif ($thisfn =~ m{^/adm/$match_domain/$match_courseid/\d+/ext\.tool$}) {
13479: $thisfn='/adm/wrapper'.$thisfn;
13480: }
13481: return $thisfn;
13482: }
13483:
13484: sub clutter_with_no_wrapper {
13485: my $uri = &clutter(shift);
13486: if ($uri =~ m-^/adm/-) {
13487: $uri =~ s-^/adm/wrapper/-/-;
13488: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
13489: }
13490: return $uri;
13491: }
13492:
13493: sub freeze_escape {
13494: my ($value)=@_;
13495: if (ref($value)) {
13496: $value=&nfreeze($value);
13497: return '__FROZEN__'.&escape($value);
13498: }
13499: return &escape($value);
13500: }
13501:
13502:
13503: sub thaw_unescape {
13504: my ($value)=@_;
13505: if ($value =~ /^__FROZEN__/) {
13506: substr($value,0,10,undef);
13507: $value=&unescape($value);
13508: return &thaw($value);
13509: }
13510: return &unescape($value);
13511: }
13512:
13513: sub correct_line_ends {
13514: my ($result)=@_;
13515: $$result =~s/\r\n/\n/mg;
13516: $$result =~s/\r/\n/mg;
13517: }
13518: # ================================================================ Main Program
13519:
13520: sub goodbye {
13521: &logthis("Starting Shut down");
13522: #not converted to using infrastruture and probably shouldn't be
13523: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
13524: #converted
13525: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
13526: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
13527: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
13528: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
13529: #1.1 only
13530: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
13531: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
13532: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
13533: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
13534: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
13535: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
13536: &logthis(sprintf("%-20s is %s",'hits',$hits));
13537: &flushcourselogs();
13538: &logthis("Shutting down");
13539: }
13540:
13541: sub get_dns {
13542: my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
13543: if (!$ignore_cache) {
13544: my ($content,$cached)=
13545: &Apache::lonnet::is_cached_new('dns',$url);
13546: if ($cached) {
13547: &$func($content,$hashref);
13548: return;
13549: }
13550: }
13551:
13552: my %alldns;
13553: if (open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab")) {
13554: foreach my $dns (<$config>) {
13555: next if ($dns !~ /^\^(\S*)/x);
13556: my $line = $1;
13557: my ($host,$protocol) = split(/:/,$line);
13558: if ($protocol ne 'https') {
13559: $protocol = 'http';
13560: }
13561: $alldns{$host} = $protocol;
13562: }
13563: close($config);
13564: }
13565: while (%alldns) {
13566: my ($dns) = sort { $b cmp $a } keys(%alldns);
13567: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
13568: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar,30,0);
13569: delete($alldns{$dns});
13570: next if ($response->is_error());
13571: if ($url eq '/adm/dns/loncapaCRL') {
13572: return &$func($response);
13573: } else {
13574: my @content = split("\n",$response->content);
13575: unless ($nocache) {
13576: &do_cache_new('dns',$url,\@content,30*24*60*60);
13577: }
13578: &$func(\@content,$hashref);
13579: return;
13580: }
13581: }
13582: my $which = (split('/',$url,4))[3];
13583: if ($which eq 'loncapaCRL') {
13584: my $diskfile = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
13585: if (-e $diskfile) {
13586: &logthis("unable to contact DNS, on disk file $diskfile not updated");
13587: } else {
13588: &logthis("unable to contact DNS, no on disk file $diskfile available");
13589: }
13590: } else {
13591: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
13592: if (open(my $config,"<","$perlvar{'lonTabDir'}/dns_$which.tab")) {
13593: my @content = <$config>;
13594: close($config);
13595: &$func(\@content,$hashref);
13596: }
13597: }
13598: return;
13599: }
13600:
13601: # ------------------------------------------------------Get DNS checksums file
13602: sub parse_dns_checksums_tab {
13603: my ($lines,$hashref) = @_;
13604: my $lonhost = $perlvar{'lonHostID'};
13605: my $machine_dom = &Apache::lonnet::host_domain($lonhost);
13606: my $loncaparev = &get_server_loncaparev($machine_dom);
13607: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
13608: my $webconfdir = '/etc/httpd/conf';
13609: if ($distro =~ /^(ubuntu|debian)(\d+)$/) {
13610: $webconfdir = '/etc/apache2';
13611: } elsif ($distro =~ /^sles(\d+)$/) {
13612: if ($1 >= 10) {
13613: $webconfdir = '/etc/apache2';
13614: }
13615: } elsif ($distro =~ /^suse(\d+\.\d+)$/) {
13616: if ($1 >= 10.0) {
13617: $webconfdir = '/etc/apache2';
13618: }
13619: }
13620: my ($release,$timestamp) = split(/\-/,$loncaparev);
13621: my (%chksum,%revnum);
13622: if (ref($lines) eq 'ARRAY') {
13623: chomp(@{$lines});
13624: my $version = shift(@{$lines});
13625: if ($version eq $release) {
13626: foreach my $line (@{$lines}) {
13627: my ($file,$version,$shasum) = split(/,/,$line);
13628: if ($file =~ m{^/etc/httpd/conf}) {
13629: if ($webconfdir eq '/etc/apache2') {
13630: $file =~ s{^\Q/etc/httpd/conf/\E}{$webconfdir/};
13631: }
13632: }
13633: $chksum{$file} = $shasum;
13634: $revnum{$file} = $version;
13635: }
13636: if (ref($hashref) eq 'HASH') {
13637: %{$hashref} = (
13638: sums => \%chksum,
13639: versions => \%revnum,
13640: );
13641: }
13642: }
13643: }
13644: return;
13645: }
13646:
13647: sub fetch_dns_checksums {
13648: my %checksums;
13649: my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
13650: my $loncaparev = &get_server_loncaparev($machine_dom,$perlvar{'lonHostID'});
13651: my ($release,$timestamp) = split(/\-/,$loncaparev);
13652: &get_dns("/adm/dns/checksums/$release",\&parse_dns_checksums_tab,1,1,
13653: \%checksums);
13654: return \%checksums;
13655: }
13656:
13657: sub fetch_crl_pemfile {
13658: return &get_dns("/adm/dns/loncapaCRL",\&save_crl_pem,1,1);
13659: }
13660:
13661: sub save_crl_pem {
13662: my ($response) = @_;
13663: my ($msg,$hadchanges);
13664: if (ref($response)) {
13665: my $now = time;
13666: my $lonca = $perlvar{'lonCertificateDirectory'}.'/'.$perlvar{'lonnetCertificateAuthority'};
13667: my $tmpcrl = $tmpdir.'/'.$perlvar{'lonnetCertRevocationList'}.'_'.$now.'.'.$$.'.tmp';
13668: if (open(my $fh,'>',"$tmpcrl")) {
13669: print $fh $response->content;
13670: close($fh);
13671: if (-e $lonca) {
13672: if (open(PIPE,"openssl crl -in $tmpcrl -inform pem -CAfile $lonca -noout 2>&1 |")) {
13673: my $check = <PIPE>;
13674: close(PIPE);
13675: chomp($check);
13676: if ($check eq 'verify OK') {
13677: my $dest = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
13678: my $backup;
13679: if (-e $dest) {
13680: if (&File::Copy::move($dest,"$dest.bak")) {
13681: $backup = 'ok';
13682: }
13683: }
13684: if (&File::Copy::move($tmpcrl,$dest)) {
13685: $msg = 'ok';
13686: if ($backup) {
13687: my (%oldnums,%newnums);
13688: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest.bak |grep 'Serial Number' |")) {
13689: while (<PIPE>) {
13690: $oldnums{(split(/:/))[1]} = 1;
13691: }
13692: close(PIPE);
13693: }
13694: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest |grep 'Serial Number' |")) {
13695: while(<PIPE>) {
13696: $newnums{(split(/:/))[1]} = 1;
13697: }
13698: close(PIPE);
13699: }
13700: foreach my $key (sort {$b <=> $a } (keys(%newnums))) {
13701: unless (exists($oldnums{$key})) {
13702: $hadchanges = 1;
13703: last;
13704: }
13705: }
13706: unless ($hadchanges) {
13707: foreach my $key (sort {$b <=> $a } (keys(%oldnums))) {
13708: unless (exists($newnums{$key})) {
13709: $hadchanges = 1;
13710: last;
13711: }
13712: }
13713: }
13714: }
13715: }
13716: } else {
13717: unlink($tmpcrl);
13718: }
13719: } else {
13720: unlink($tmpcrl);
13721: }
13722: } else {
13723: unlink($tmpcrl);
13724: }
13725: }
13726: }
13727: return ($msg,$hadchanges);
13728: }
13729:
13730: # ------------------------------------------------------------ Read domain file
13731: {
13732: my $loaded;
13733: my %domain;
13734:
13735: sub parse_domain_tab {
13736: my ($lines) = @_;
13737: foreach my $line (@$lines) {
13738: next if ($line =~ /^(\#|\s*$ )/x);
13739:
13740: chomp($line);
13741: my ($name,@elements) = split(/:/,$line,9);
13742: my %this_domain;
13743: foreach my $field ('description', 'auth_def', 'auth_arg_def',
13744: 'lang_def', 'city', 'longi', 'lati',
13745: 'primary') {
13746: $this_domain{$field} = shift(@elements);
13747: }
13748: $domain{$name} = \%this_domain;
13749: }
13750: }
13751:
13752: sub reset_domain_info {
13753: undef($loaded);
13754: undef(%domain);
13755: }
13756:
13757: sub load_domain_tab {
13758: my ($ignore_cache,$nocache) = @_;
13759: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache,$nocache);
13760: my $fh;
13761: if (open($fh,"<",$perlvar{'lonTabDir'}.'/domain.tab')) {
13762: my @lines = <$fh>;
13763: &parse_domain_tab(\@lines);
13764: }
13765: close($fh);
13766: $loaded = 1;
13767: }
13768:
13769: sub domain {
13770: &load_domain_tab() if (!$loaded);
13771:
13772: my ($name,$what) = @_;
13773: return if ( !exists($domain{$name}) );
13774:
13775: if (!$what) {
13776: return $domain{$name}{'description'};
13777: }
13778: return $domain{$name}{$what};
13779: }
13780:
13781: sub domain_info {
13782: &load_domain_tab() if (!$loaded);
13783: return %domain;
13784: }
13785:
13786: }
13787:
13788:
13789: # ------------------------------------------------------------- Read hosts file
13790: {
13791: my %hostname;
13792: my %hostdom;
13793: my %libserv;
13794: my $loaded;
13795: my %name_to_host;
13796: my %internetdom;
13797: my %LC_dns_serv;
13798:
13799: sub parse_hosts_tab {
13800: my ($file) = @_;
13801: foreach my $configline (@$file) {
13802: next if ($configline =~ /^(\#|\s*$ )/x);
13803: chomp($configline);
13804: if ($configline =~ /^\^/) {
13805: if ($configline =~ /^\^([\w.\-]+)/) {
13806: $LC_dns_serv{$1} = 1;
13807: }
13808: next;
13809: }
13810: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
13811: $name=~s/\s//g;
13812: if ($id && $domain && $role && $name) {
13813: if ((exists($hostname{$id})) && ($hostname{$id} ne '')) {
13814: my $curr = $hostname{$id};
13815: my $skip;
13816: if (ref($name_to_host{$curr}) eq 'ARRAY') {
13817: if (($curr eq $name) && (@{$name_to_host{$curr}} == 1)) {
13818: $skip = 1;
13819: } else {
13820: @{$name_to_host{$curr}} = grep { $_ ne $id } @{$name_to_host{$curr}};
13821: }
13822: }
13823: unless ($skip) {
13824: push(@{$name_to_host{$name}},$id);
13825: }
13826: } else {
13827: push(@{$name_to_host{$name}},$id);
13828: }
13829: $hostname{$id}=$name;
13830: $hostdom{$id}=$domain;
13831: if ($role eq 'library') { $libserv{$id}=$name; }
13832: if (defined($protocol)) {
13833: if ($protocol eq 'https') {
13834: $protocol{$id} = $protocol;
13835: } else {
13836: $protocol{$id} = 'http';
13837: }
13838: } else {
13839: $protocol{$id} = 'http';
13840: }
13841: if (defined($intdom)) {
13842: $internetdom{$id} = $intdom;
13843: }
13844: }
13845: }
13846: }
13847:
13848: sub reset_hosts_info {
13849: &purge_remembered();
13850: &reset_domain_info();
13851: &reset_hosts_ip_info();
13852: undef(%internetdom);
13853: undef(%name_to_host);
13854: undef(%hostname);
13855: undef(%hostdom);
13856: undef(%libserv);
13857: undef($loaded);
13858: }
13859:
13860: sub load_hosts_tab {
13861: my ($ignore_cache,$nocache) = @_;
13862: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache,$nocache);
13863: open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab");
13864: my @config = <$config>;
13865: &parse_hosts_tab(\@config);
13866: close($config);
13867: $loaded=1;
13868: }
13869:
13870: sub hostname {
13871: &load_hosts_tab() if (!$loaded);
13872:
13873: my ($lonid) = @_;
13874: return $hostname{$lonid};
13875: }
13876:
13877: sub all_hostnames {
13878: &load_hosts_tab() if (!$loaded);
13879:
13880: return %hostname;
13881: }
13882:
13883: sub all_names {
13884: my ($ignore_cache,$nocache) = @_;
13885: &load_hosts_tab($ignore_cache,$nocache) if (!$loaded);
13886:
13887: return %name_to_host;
13888: }
13889:
13890: sub all_host_domain {
13891: &load_hosts_tab() if (!$loaded);
13892: return %hostdom;
13893: }
13894:
13895: sub all_host_intdom {
13896: &load_hosts_tab() if (!$loaded);
13897: return %internetdom;
13898: }
13899:
13900: sub is_library {
13901: &load_hosts_tab() if (!$loaded);
13902:
13903: return exists($libserv{$_[0]});
13904: }
13905:
13906: sub all_library {
13907: &load_hosts_tab() if (!$loaded);
13908:
13909: return %libserv;
13910: }
13911:
13912: sub unique_library {
13913: #2x reverse removes all hostnames that appear more than once
13914: my %unique = reverse &all_library();
13915: return reverse %unique;
13916: }
13917:
13918: sub get_servers {
13919: &load_hosts_tab() if (!$loaded);
13920:
13921: my ($domain,$type) = @_;
13922: my %possible_hosts = ($type eq 'library') ? %libserv
13923: : %hostname;
13924: my %result;
13925: if (ref($domain) eq 'ARRAY') {
13926: while ( my ($host,$hostname) = each(%possible_hosts)) {
13927: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
13928: $result{$host} = $hostname;
13929: }
13930: }
13931: } else {
13932: while ( my ($host,$hostname) = each(%possible_hosts)) {
13933: if ($hostdom{$host} eq $domain) {
13934: $result{$host} = $hostname;
13935: }
13936: }
13937: }
13938: return %result;
13939: }
13940:
13941: sub get_unique_servers {
13942: my %unique = reverse &get_servers(@_);
13943: return reverse %unique;
13944: }
13945:
13946: sub host_domain {
13947: &load_hosts_tab() if (!$loaded);
13948:
13949: my ($lonid) = @_;
13950: return $hostdom{$lonid};
13951: }
13952:
13953: sub all_domains {
13954: &load_hosts_tab() if (!$loaded);
13955:
13956: my %seen;
13957: my @uniq = grep(!$seen{$_}++, values(%hostdom));
13958: return @uniq;
13959: }
13960:
13961: sub internet_dom {
13962: &load_hosts_tab() if (!$loaded);
13963:
13964: my ($lonid) = @_;
13965: return $internetdom{$lonid};
13966: }
13967:
13968: sub is_LC_dns {
13969: &load_hosts_tab() if (!$loaded);
13970:
13971: my ($hostname) = @_;
13972: return exists($LC_dns_serv{$hostname});
13973: }
13974:
13975: }
13976:
13977: {
13978: my %iphost;
13979: my %name_to_ip;
13980: my %lonid_to_ip;
13981:
13982: sub get_hosts_from_ip {
13983: my ($ip) = @_;
13984: my %iphosts = &get_iphost();
13985: if (ref($iphosts{$ip})) {
13986: return @{$iphosts{$ip}};
13987: }
13988: return;
13989: }
13990:
13991: sub reset_hosts_ip_info {
13992: undef(%iphost);
13993: undef(%name_to_ip);
13994: undef(%lonid_to_ip);
13995: }
13996:
13997: sub get_host_ip {
13998: my ($lonid) = @_;
13999: if (exists($lonid_to_ip{$lonid})) {
14000: return $lonid_to_ip{$lonid};
14001: }
14002: my $name=&hostname($lonid);
14003: my $ip = gethostbyname($name);
14004: return if (!$ip || length($ip) ne 4);
14005: $ip=inet_ntoa($ip);
14006: $name_to_ip{$name} = $ip;
14007: $lonid_to_ip{$lonid} = $ip;
14008: return $ip;
14009: }
14010:
14011: sub get_iphost {
14012: my ($ignore_cache,$nocache) = @_;
14013:
14014: if (!$ignore_cache) {
14015: if (%iphost) {
14016: return %iphost;
14017: }
14018: my ($ip_info,$cached)=
14019: &Apache::lonnet::is_cached_new('iphost','iphost');
14020: if ($cached) {
14021: %iphost = %{$ip_info->[0]};
14022: %name_to_ip = %{$ip_info->[1]};
14023: %lonid_to_ip = %{$ip_info->[2]};
14024: return %iphost;
14025: }
14026: }
14027:
14028: # get yesterday's info for fallback
14029: my %old_name_to_ip;
14030: my ($ip_info,$cached)=
14031: &Apache::lonnet::is_cached_new('iphost','iphost');
14032: if ($cached) {
14033: %old_name_to_ip = %{$ip_info->[1]};
14034: }
14035:
14036: my %name_to_host = &all_names($ignore_cache,$nocache);
14037: foreach my $name (keys(%name_to_host)) {
14038: my $ip;
14039: if (!exists($name_to_ip{$name})) {
14040: $ip = gethostbyname($name);
14041: if (!$ip || length($ip) ne 4) {
14042: if (defined($old_name_to_ip{$name})) {
14043: $ip = $old_name_to_ip{$name};
14044: &logthis("Can't find $name defaulting to old $ip");
14045: } else {
14046: &logthis("Name $name no IP found");
14047: next;
14048: }
14049: } else {
14050: $ip=inet_ntoa($ip);
14051: }
14052: $name_to_ip{$name} = $ip;
14053: } else {
14054: $ip = $name_to_ip{$name};
14055: }
14056: foreach my $id (@{ $name_to_host{$name} }) {
14057: $lonid_to_ip{$id} = $ip;
14058: }
14059: push(@{$iphost{$ip}},@{$name_to_host{$name}});
14060: }
14061: unless ($nocache) {
14062: &do_cache_new('iphost','iphost',
14063: [\%iphost,\%name_to_ip,\%lonid_to_ip],
14064: 48*60*60);
14065: }
14066:
14067: return %iphost;
14068: }
14069:
14070: #
14071: # Given a DNS returns the loncapa host name for that DNS
14072: #
14073: sub host_from_dns {
14074: my ($dns) = @_;
14075: my @hosts;
14076: my $ip;
14077:
14078: if (exists($name_to_ip{$dns})) {
14079: $ip = $name_to_ip{$dns};
14080: }
14081: if (!$ip) {
14082: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
14083: if (length($ip) == 4) {
14084: $ip = &IO::Socket::inet_ntoa($ip);
14085: }
14086: }
14087: if ($ip) {
14088: @hosts = get_hosts_from_ip($ip);
14089: return $hosts[0];
14090: }
14091: return undef;
14092: }
14093:
14094: sub get_internet_names {
14095: my ($lonid) = @_;
14096: return if ($lonid eq '');
14097: my ($idnref,$cached)=
14098: &Apache::lonnet::is_cached_new('internetnames',$lonid);
14099: if ($cached) {
14100: return $idnref;
14101: }
14102: my $ip = &get_host_ip($lonid);
14103: my @hosts = &get_hosts_from_ip($ip);
14104: my %iphost = &get_iphost();
14105: my (@idns,%seen);
14106: foreach my $id (@hosts) {
14107: my $dom = &host_domain($id);
14108: my $prim_id = &domain($dom,'primary');
14109: my $prim_ip = &get_host_ip($prim_id);
14110: next if ($seen{$prim_ip});
14111: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
14112: foreach my $id (@{$iphost{$prim_ip}}) {
14113: my $intdom = &internet_dom($id);
14114: unless (grep(/^\Q$intdom\E$/,@idns)) {
14115: push(@idns,$intdom);
14116: }
14117: }
14118: }
14119: $seen{$prim_ip} = 1;
14120: }
14121: return &do_cache_new('internetnames',$lonid,\@idns,12*60*60);
14122: }
14123:
14124: }
14125:
14126: sub all_loncaparevs {
14127: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11);
14128: }
14129:
14130: # ---------------------------------------------------------- Read loncaparev table
14131: {
14132: sub load_loncaparevs {
14133: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
14134: if (open(my $config,"<","$perlvar{'lonTabDir'}/loncaparevs.tab")) {
14135: while (my $configline=<$config>) {
14136: chomp($configline);
14137: my ($hostid,$loncaparev)=split(/:/,$configline);
14138: $loncaparevs{$hostid}=$loncaparev;
14139: }
14140: close($config);
14141: }
14142: }
14143: }
14144: }
14145:
14146: # ---------------------------------------------------------- Read serverhostID table
14147: {
14148: sub load_serverhomeIDs {
14149: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
14150: if (open(my $config,"<","$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
14151: while (my $configline=<$config>) {
14152: chomp($configline);
14153: my ($name,$id)=split(/:/,$configline);
14154: $serverhomeIDs{$name}=$id;
14155: }
14156: close($config);
14157: }
14158: }
14159: }
14160: }
14161:
14162:
14163: BEGIN {
14164:
14165: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
14166: unless ($readit) {
14167: {
14168: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
14169: %perlvar = (%perlvar,%{$configvars});
14170: }
14171:
14172:
14173: # ------------------------------------------------------ Read spare server file
14174: {
14175: open(my $config,"<","$perlvar{'lonTabDir'}/spare.tab");
14176:
14177: while (my $configline=<$config>) {
14178: chomp($configline);
14179: if ($configline) {
14180: my ($host,$type) = split(':',$configline,2);
14181: if (!defined($type) || $type eq '') { $type = 'default' };
14182: push(@{ $spareid{$type} }, $host);
14183: }
14184: }
14185: close($config);
14186: }
14187: # ------------------------------------------------------------ Read permissions
14188: {
14189: open(my $config,"<","$perlvar{'lonTabDir'}/roles.tab");
14190:
14191: while (my $configline=<$config>) {
14192: chomp($configline);
14193: if ($configline) {
14194: my ($role,$perm)=split(/ /,$configline);
14195: if ($perm ne '') { $pr{$role}=$perm; }
14196: }
14197: }
14198: close($config);
14199: }
14200:
14201: # -------------------------------------------- Read plain texts for permissions
14202: {
14203: open(my $config,"<","$perlvar{'lonTabDir'}/rolesplain.tab");
14204:
14205: while (my $configline=<$config>) {
14206: chomp($configline);
14207: if ($configline) {
14208: my ($short,@plain)=split(/:/,$configline);
14209: %{$prp{$short}} = ();
14210: if (@plain > 0) {
14211: $prp{$short}{'std'} = $plain[0];
14212: for (my $i=1; $i<@plain; $i++) {
14213: $prp{$short}{'alt'.$i} = $plain[$i];
14214: }
14215: }
14216: }
14217: }
14218: close($config);
14219: }
14220:
14221: # ---------------------------------------------------------- Read package table
14222: {
14223: open(my $config,"<","$perlvar{'lonTabDir'}/packages.tab");
14224:
14225: while (my $configline=<$config>) {
14226: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
14227: chomp($configline);
14228: my ($short,$plain)=split(/:/,$configline);
14229: my ($pack,$name)=split(/\&/,$short);
14230: if ($plain ne '') {
14231: $packagetab{$pack.'&'.$name.'&name'}=$name;
14232: $packagetab{$short}=$plain;
14233: }
14234: }
14235: close($config);
14236: }
14237:
14238: # ---------------------------------------------------------- Read loncaparev table
14239:
14240: &load_loncaparevs();
14241:
14242: # ---------------------------------------------------------- Read serverhostID table
14243:
14244: &load_serverhomeIDs();
14245:
14246: # ---------------------------------------------------------- Read releaseslist XML
14247: {
14248: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
14249: if (-e $file) {
14250: my $parser = HTML::LCParser->new($file);
14251: while (my $token = $parser->get_token()) {
14252: if ($token->[0] eq 'S') {
14253: my $item = $token->[1];
14254: my $name = $token->[2]{'name'};
14255: my $value = $token->[2]{'value'};
14256: my $valuematch = $token->[2]{'valuematch'};
14257: my $namematch = $token->[2]{'namematch'};
14258: if ($item eq 'parameter') {
14259: if (($namematch ne '') || (($name ne '') && ($value ne '' || $valuematch ne ''))) {
14260: my $release = $parser->get_text();
14261: $release =~ s/(^\s*|\s*$ )//gx;
14262: $needsrelease{$item.':'.$name.':'.$value.':'.$valuematch.':'.$namematch} = $release;
14263: }
14264: } elsif ($item ne '' && $name ne '') {
14265: my $release = $parser->get_text();
14266: $release =~ s/(^\s*|\s*$ )//gx;
14267: $needsrelease{$item.':'.$name.':'.$value} = $release;
14268: }
14269: }
14270: }
14271: }
14272: }
14273:
14274: # ---------------------------------------------------------- Read managers table
14275: {
14276: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
14277: if (open(my $config,"<","$perlvar{'lonTabDir'}/managers.tab")) {
14278: while (my $configline=<$config>) {
14279: chomp($configline);
14280: next if ($configline =~ /^\#/);
14281: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
14282: $managerstab{$configline} = 1;
14283: }
14284: }
14285: close($config);
14286: }
14287: }
14288: }
14289:
14290: # ------------- set up temporary directory
14291: {
14292: $tmpdir = LONCAPA::tempdir();
14293:
14294: }
14295:
14296: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
14297: 'compress_threshold'=> 20_000,
14298: });
14299:
14300: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
14301: $dumpcount=0;
14302: $locknum=0;
14303:
14304: &logtouch();
14305: &logthis('<font color="yellow">INFO: Read configuration</font>');
14306: $readit=1;
14307: {
14308: use integer;
14309: my $test=(2**32)+1;
14310: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
14311: &logthis(" Detected 64bit platform ($_64bit)");
14312: }
14313: }
14314: }
14315:
14316: 1;
14317: __END__
14318:
14319: =pod
14320:
14321: =head1 NAME
14322:
14323: Apache::lonnet - Subroutines to ask questions about things in the network.
14324:
14325: =head1 SYNOPSIS
14326:
14327: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
14328:
14329: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
14330:
14331: Common parameters:
14332:
14333: =over 4
14334:
14335: =item *
14336:
14337: $uname : an internal username (if $cname expecting a course Id specifically)
14338:
14339: =item *
14340:
14341: $udom : a domain (if $cdom expecting a course's domain specifically)
14342:
14343: =item *
14344:
14345: $symb : a resource instance identifier
14346:
14347: =item *
14348:
14349: $namespace : the name of a .db file that contains the data needed or
14350: being set.
14351:
14352: =back
14353:
14354: =head1 OVERVIEW
14355:
14356: lonnet provides subroutines which interact with the
14357: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
14358: about classes, users, and resources.
14359:
14360: For many of these objects you can also use this to store data about
14361: them or modify them in various ways.
14362:
14363: =head2 Symbs
14364:
14365: To identify a specific instance of a resource, LON-CAPA uses symbols
14366: or "symbs"X<symb>. These identifiers are built from the URL of the
14367: map, the resource number of the resource in the map, and the URL of
14368: the resource itself. The latter is somewhat redundant, but might help
14369: if maps change.
14370:
14371: An example is
14372:
14373: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
14374:
14375: The respective map entry is
14376:
14377: <resource id="19" src="/res/msu/korte/tests/part12.problem"
14378: title="Problem 2">
14379: </resource>
14380:
14381: Symbs are used by the random number generator, as well as to store and
14382: restore data specific to a certain instance of for example a problem.
14383:
14384: =head2 Storing And Retrieving Data
14385:
14386: X<store()>X<cstore()>X<restore()>Three of the most important functions
14387: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
14388: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
14389: is is the non-critical message twin of cstore. These functions are for
14390: handlers to store a perl hash to a user's permanent data space in an
14391: easy manner, and to retrieve it again on another call. It is expected
14392: that a handler would use this once at the beginning to retrieve data,
14393: and then again once at the end to send only the new data back.
14394:
14395: The data is stored in the user's data directory on the user's
14396: homeserver under the ID of the course.
14397:
14398: The hash that is returned by restore will have all of the previous
14399: value for all of the elements of the hash.
14400:
14401: Example:
14402:
14403: #creating a hash
14404: my %hash;
14405: $hash{'foo'}='bar';
14406:
14407: #storing it
14408: &Apache::lonnet::cstore(\%hash);
14409:
14410: #changing a value
14411: $hash{'foo'}='notbar';
14412:
14413: #adding a new value
14414: $hash{'bar'}='foo';
14415: &Apache::lonnet::cstore(\%hash);
14416:
14417: #retrieving the hash
14418: my %history=&Apache::lonnet::restore();
14419:
14420: #print the hash
14421: foreach my $key (sort(keys(%history))) {
14422: print("\%history{$key} = $history{$key}");
14423: }
14424:
14425: Will print out:
14426:
14427: %history{1:foo} = bar
14428: %history{1:keys} = foo:timestamp
14429: %history{1:timestamp} = 990455579
14430: %history{2:bar} = foo
14431: %history{2:foo} = notbar
14432: %history{2:keys} = foo:bar:timestamp
14433: %history{2:timestamp} = 990455580
14434: %history{bar} = foo
14435: %history{foo} = notbar
14436: %history{timestamp} = 990455580
14437: %history{version} = 2
14438:
14439: Note that the special hash entries C<keys>, C<version> and
14440: C<timestamp> were added to the hash. C<version> will be equal to the
14441: total number of versions of the data that have been stored. The
14442: C<timestamp> attribute will be the UNIX time the hash was
14443: stored. C<keys> is available in every historical section to list which
14444: keys were added or changed at a specific historical revision of a
14445: hash.
14446:
14447: B<Warning>: do not store the hash that restore returns directly. This
14448: will cause a mess since it will restore the historical keys as if the
14449: were new keys. I.E. 1:foo will become 1:1:foo etc.
14450:
14451: Calling convention:
14452:
14453: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
14454: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$laststore);
14455:
14456: For more detailed information, see lonnet specific documentation.
14457:
14458: =head1 RETURN MESSAGES
14459:
14460: =over 4
14461:
14462: =item * B<con_lost>: unable to contact remote host
14463:
14464: =item * B<con_delayed>: unable to contact remote host, message will be delivered
14465: when the connection is brought back up
14466:
14467: =item * B<con_failed>: unable to contact remote host and unable to save message
14468: for later delivery
14469:
14470: =item * B<error:>: an error a occurred, a description of the error follows the :
14471:
14472: =item * B<no_such_host>: unable to fund a host associated with the user/domain
14473: that was requested
14474:
14475: =back
14476:
14477: =head1 PUBLIC SUBROUTINES
14478:
14479: =head2 Session Environment Functions
14480:
14481: =over 4
14482:
14483: =item *
14484: X<appenv()>
14485: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
14486: the user envirnoment file, and will be restored for each access this
14487: user makes during this session, also modifies the %env for the current
14488: process. Optional rolesarrayref - if defined contains a reference to an array
14489: of roles which are exempt from the restriction on modifying user.role entries
14490: in the user's environment.db and in %env.
14491:
14492: =item *
14493: X<delenv()>
14494: B<delenv($delthis,$regexp)>: removes all items from the session
14495: environment file that begin with $delthis. If the
14496: optional second arg - $regexp - is true, $delthis is treated as a
14497: regular expression, otherwise \Q$delthis\E is used.
14498: The values are also deleted from the current processes %env.
14499:
14500: =item * get_env_multiple($name)
14501:
14502: gets $name from the %env hash, it seemlessly handles the cases where multiple
14503: values may be defined and end up as an array ref.
14504:
14505: returns an array of values
14506:
14507: =back
14508:
14509: =head2 User Information
14510:
14511: =over 4
14512:
14513: =item *
14514: X<queryauthenticate()>
14515: B<queryauthenticate($uname,$udom)>: try to determine user's current
14516: authentication scheme
14517:
14518: =item *
14519: X<authenticate()>
14520: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
14521: authenticate user from domain's lib servers (first use the current
14522: one). C<$upass> should be the users password.
14523: $checkdefauth is optional (value is 1 if a check should be made to
14524: authenticate user using default authentication method, and allow
14525: account creation if username does not have account in the domain).
14526: $clientcancheckhost is optional (value is 1 if checking whether the
14527: server can host will occur on the client side in lonauth.pm).
14528:
14529: =item *
14530: X<homeserver()>
14531: B<homeserver($uname,$udom)>: find the server which has
14532: the user's directory and files (there must be only one), this caches
14533: the answer, and also caches if there is a borken connection.
14534:
14535: =item *
14536: X<idget()>
14537: B<idget($udom,$idsref,$namespace)>: find the usernames behind either
14538: a list of student/employee IDs or clicker IDs
14539: (student/employee IDs are a unique resource in a domain, there must be
14540: only 1 ID per username, and only 1 username per ID in a specific domain).
14541: clickerIDs are not necessarily unique, as students might share clickers.
14542: (returns hash: id=>name,id=>name)
14543:
14544: =item *
14545: X<idrget()>
14546: B<idrget($udom,@unames)>: find the IDs behind a list of
14547: usernames (returns hash: name=>id,name=>id)
14548:
14549: =item *
14550: X<idput()>
14551: B<idput($udom,$idsref,$uhome,$namespace)>: store away a list of
14552: names and associated student/employee IDs or clicker IDs.
14553:
14554: =item *
14555: X<iddel()>
14556: B<iddel($udom,$idshashref,$uhome,$namespace)>: delete unwanted
14557: student/employee ID or clicker ID username look-ups from domain.
14558: The homeserver ($uhome) and namespace ($namespace) are optional.
14559: If no $uhome is provided, it will be determined usig &homeserver()
14560: for each user. If no $namespace is provided, the default is ids.
14561:
14562: =item *
14563: X<updateclickers()>
14564: B<updateclickers($udom,$action,$idshashref,$uhome,$critical)>: update
14565: clicker ID-to-username look-ups in clickers.db on library server.
14566: Permitted actions are add or del (i.e., add or delete). The
14567: clickers.db contains clickerID as keys (escaped), and each corresponding
14568: value is an escaped comma-separated list of usernames (for whom the
14569: library server is the homeserver), who registered that particular ID.
14570: If $critical is true, the update will be sent via &critical, otherwise
14571: &reply() will be used.
14572:
14573: =item *
14574: X<rolesinit()>
14575: B<rolesinit($udom,$username)>: get user privileges.
14576: returns user role, first access and timer interval hashes
14577:
14578: =item *
14579: X<privileged()>
14580: B<privileged($username,$domain)>: returns a true if user has a
14581: privileged and active role (i.e. su or dc), false otherwise.
14582:
14583: =item *
14584: X<getsection()>
14585: B<getsection($udom,$uname,$cname)>: finds the section of student in the
14586: course $cname, return section name/number or '' for "not in course"
14587: and '-1' for "no section"
14588:
14589: =item *
14590: X<userenvironment()>
14591: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
14592: passed in @what from the requested user's environment, returns a hash
14593:
14594: =item *
14595: X<userlog_query()>
14596: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
14597: activity.log file. %filters defines filters applied when parsing the
14598: log file. These can be start or end timestamps, or the type of action
14599: - log to look for Login or Logout events, check for Checkin or
14600: Checkout, role for role selection. The response is in the form
14601: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
14602: escaped strings of the action recorded in the activity.log file.
14603:
14604: =back
14605:
14606: =head2 User Roles
14607:
14608: =over 4
14609:
14610: =item *
14611:
14612: allowed($priv,$uri,$symb,$role,$clientip,$noblockcheck) : check for a user privilege;
14613: returns codes for allowed actions.
14614:
14615: The first argument is required, all others are optional.
14616:
14617: $priv is the privilege being checked.
14618: $uri contains additional information about what is being checked for access (e.g.,
14619: URL, course ID etc.).
14620: $symb is the unique resource instance identifier in a course; if needed,
14621: but not provided, it will be retrieved via a call to &symbread().
14622: $role is the role for which a priv is being checked (only used if priv is evb).
14623: $clientip is the user's IP address (only used when checking for access to portfolio
14624: files).
14625: $noblockcheck, if true, skips calls to &has_comm_blocking() for the bre priv. This
14626: prevents recursive calls to &allowed.
14627:
14628: F: full access
14629: U,I,K: authentication modes (cxx only)
14630: '': forbidden
14631: 1: user needs to choose course
14632: 2: browse allowed
14633: A: passphrase authentication needed
14634: B: access temporarily blocked because of a blocking event in a course.
14635:
14636: =item *
14637:
14638: constructaccess($url,$setpriv) : check for access to construction space URL
14639:
14640: See if the owner domain and name in the URL match those in the
14641: expected environment. If so, return three element list
14642: ($ownername,$ownerdomain,$ownerhome).
14643:
14644: Otherwise return the null string.
14645:
14646: If second argument 'setpriv' is true, it assigns the privileges,
14647: and returns the same three element list, unless the owner has
14648: blocked "ad hoc" Domain Coordinator access to the Author Space,
14649: in which case the null string is returned.
14650:
14651: =item *
14652:
14653: definerole($rolename,$sysrole,$domrole,$courole,$uname,$udom) : define role;
14654: define a custom role rolename set privileges in format of lonTabs/roles.tab
14655: for system, domain, and course level. $uname and $udom are optional (current
14656: user's username and domain will be used when either of $uname or $udom are absent.
14657:
14658: =item *
14659:
14660: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
14661: (rolesplain.tab); plain text explanation of a user role term.
14662: $type is Course (default) or Community.
14663: If $forcedefault evaluates to true, text returned will be default
14664: text for $type. Otherwise, if this is a course, the text returned
14665: will be a custom name for the role (if defined in the course's
14666: environment). If no custom name is defined the default is returned.
14667:
14668: =item *
14669:
14670: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
14671: All arguments are optional. Returns a hash of a roles, either for
14672: co-author/assistant author roles for a user's Construction Space
14673: (default), or if $context is 'userroles', roles for the user himself,
14674: In the hash, keys are set to colon-separated $uname,$udom,$role, and
14675: (optionally) if $withsec is true, a fourth colon-separated item - $section.
14676: For each key, value is set to colon-separated start and end times for
14677: the role. If no username and domain are specified, will default to
14678: current user/domain. Types, roles, and roledoms are references to arrays
14679: of role statuses (active, future or previous), roles
14680: (e.g., cc,in, st etc.) and domains of the roles which can be used
14681: to restrict the list of roles reported. If no array ref is
14682: provided for types, will default to return only active roles.
14683:
14684: =item *
14685:
14686: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
14687: user: $uname:$udom has a role in the course: $cdom_$cnum.
14688:
14689: Additional optional arguments are: $type (if role checking is to be restricted
14690: to certain user status types -- previous (expired roles), active (currently
14691: available roles) or future (roles available in the future), and
14692: $hideprivileged -- if true will not report course roles for users who
14693: have active Domain Coordinator role in course's domain or in additional
14694: domains (specified in 'Domains to check for privileged users' in course
14695: environment -- set via: Course Settings -> Classlists and staff listing).
14696:
14697: =item *
14698:
14699: privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
14700: $username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
14701: $possdomains and $possroles are optional array refs -- to domains to check and
14702: roles to check. If $possdomains is not specified, a dump will be done of the
14703: users' roles.db to check for a dc or su role in any domain. This can be
14704: time consuming if &privileged is called repeatedly (e.g., when displaying a
14705: classlist), so in such cases, supplying a $possdomains array is preferred, as
14706: this then allows &privileged_by_domain() to be used, which caches the identity
14707: of privileged users, eliminating the need for repeated calls to &dump().
14708:
14709: =item *
14710:
14711: privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
14712: where the outer hash keys are domains specified in the $possdomains array ref,
14713: next inner hash keys are privileged roles specified in the $roles array ref,
14714: and the innermost hash contains key = value pairs for username:domain = end:start
14715: for active or future "privileged" users with that role in that domain. To avoid
14716: repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
14717: innerhash are cached using priv_$role and $dom as the identifiers.
14718:
14719: =back
14720:
14721: =head2 User Modification
14722:
14723: =over 4
14724:
14725: =item *
14726:
14727: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
14728: user for the level given by URL. Optional start and end dates (leave empty
14729: string or zero for "no date")
14730:
14731: =item *
14732:
14733: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
14734: change a users, password, possible return values are: ok,
14735: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
14736: refused
14737:
14738: =item *
14739:
14740: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
14741:
14742: =item *
14743:
14744: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
14745: $forceid,$desiredhome,$email,$inststatus,$candelete) :
14746:
14747: will update user information (firstname,middlename,lastname,generation,
14748: permanentemail), and if forceid is true, student/employee ID also.
14749: A user's institutional affiliation(s) can also be updated.
14750: User information fields will not be overwritten with empty entries
14751: unless the field is included in the $candelete array reference.
14752: This array is included when a single user is modified via "Manage Users",
14753: or when Autoupdate.pl is run by cron in a domain.
14754:
14755: =item *
14756:
14757: modifystudent
14758:
14759: modify a student's enrollment and identification information.
14760: The course id is resolved based on the current user's environment.
14761: This means the invoking user must be a course coordinator or otherwise
14762: associated with a course.
14763:
14764: This call is essentially a wrapper for lonnet::modifyuser and
14765: lonnet::modify_student_enrollment
14766:
14767: Inputs:
14768:
14769: =over 4
14770:
14771: =item B<$udom> Student's loncapa domain
14772:
14773: =item B<$uname> Student's loncapa login name
14774:
14775: =item B<$uid> Student/Employee ID
14776:
14777: =item B<$umode> Student's authentication mode
14778:
14779: =item B<$upass> Student's password
14780:
14781: =item B<$first> Student's first name
14782:
14783: =item B<$middle> Student's middle name
14784:
14785: =item B<$last> Student's last name
14786:
14787: =item B<$gene> Student's generation
14788:
14789: =item B<$usec> Student's section in course
14790:
14791: =item B<$end> Unix time of the roles expiration
14792:
14793: =item B<$start> Unix time of the roles start date
14794:
14795: =item B<$forceid> If defined, allow $uid to be changed
14796:
14797: =item B<$desiredhome> server to use as home server for student
14798:
14799: =item B<$email> Student's permanent e-mail address
14800:
14801: =item B<$type> Type of enrollment (auto or manual)
14802:
14803: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
14804:
14805: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
14806:
14807: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
14808:
14809: =item B<$context> role change context (shown in User Management Logs display in a course)
14810:
14811: =item B<$inststatus> institutional status of user - : separated string of escaped status types
14812:
14813: =item B<$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.
14814:
14815: =back
14816:
14817: =item *
14818:
14819: modify_student_enrollment
14820:
14821: Change a student's enrollment status in a class. The environment variable
14822: 'role.request.course' must be defined for this function to proceed.
14823:
14824: Inputs:
14825:
14826: =over 4
14827:
14828: =item $udom, student's domain
14829:
14830: =item $uname, student's name
14831:
14832: =item $uid, student's user id
14833:
14834: =item $first, student's first name
14835:
14836: =item $middle
14837:
14838: =item $last
14839:
14840: =item $gene
14841:
14842: =item $usec
14843:
14844: =item $end
14845:
14846: =item $start
14847:
14848: =item $type
14849:
14850: =item $locktype
14851:
14852: =item $cid
14853:
14854: =item $selfenroll
14855:
14856: =item $context
14857:
14858: =item $credits, number of credits student will earn from this class
14859:
14860: =item $instsec, institutional course section code for student
14861:
14862: =back
14863:
14864:
14865: =item *
14866:
14867: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
14868: custom role; give a custom role to a user for the level given by URL. Specify
14869: name and domain of role author, and role name
14870:
14871: =item *
14872:
14873: revokerole($udom,$uname,$url,$role) : revoke a role for url
14874:
14875: =item *
14876:
14877: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
14878:
14879: =back
14880:
14881: =head2 Course Infomation
14882:
14883: =over 4
14884:
14885: =item *
14886:
14887: coursedescription($courseid,$options) : returns a hash of information about the
14888: specified course id, including all environment settings for the
14889: course, the description of the course will be in the hash under the
14890: key 'description'
14891:
14892: $options is an optional parameter that if supplied is a hash reference that controls
14893: what how this function works. It has the following key/values:
14894:
14895: =over 4
14896:
14897: =item freshen_cache
14898:
14899: If defined, and the environment cache for the course is valid, it is
14900: returned in the returned hash.
14901:
14902: =item one_time
14903:
14904: If defined, the last cache time is set to _now_
14905:
14906: =item user
14907:
14908: If defined, the supplied username is used instead of the current user.
14909:
14910:
14911: =back
14912:
14913: =item *
14914:
14915: resdata($name,$domain,$type,@which) : request for current parameter
14916: setting for a specific $type, where $type is either 'course' or 'user',
14917: @what should be a list of parameters to ask about. This routine caches
14918: answers for 10 minutes.
14919:
14920: =item *
14921:
14922: get_courseresdata($courseid, $domain) : dump the entire course resource
14923: data base, returning a hash that is keyed by the resource name and has
14924: values that are the resource value. I believe that the timestamps and
14925: versions are also returned.
14926:
14927: get_numsuppfiles($cnum,$cdom) : retrieve number of files in a course's
14928: supplemental content area. This routine caches the number of files for
14929: 10 minutes.
14930:
14931: =back
14932:
14933: =head2 Course Modification
14934:
14935: =over 4
14936:
14937: =item *
14938:
14939: writecoursepref($courseid,%prefs) : write preferences (environment
14940: database) for a course
14941:
14942: =item *
14943:
14944: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
14945:
14946: =item *
14947:
14948: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
14949:
14950: =item *
14951:
14952: is_course($courseid), is_course($cdom, $cnum)
14953:
14954: Accepts either a combined $courseid (in the form of domain_courseid) or the
14955: two component version $cdom, $cnum. It checks if the specified course exists.
14956:
14957: Returns:
14958: undef if the course doesn't exist, otherwise
14959: in scalar context the combined courseid.
14960: in list context the two components of the course identifier, domain and
14961: courseid.
14962:
14963: =back
14964:
14965: =head2 Resource Subroutines
14966:
14967: =over 4
14968:
14969: =item *
14970:
14971: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
14972:
14973: =item *
14974:
14975: repcopy($filename) : subscribes to the requested file, and attempts to
14976: replicate from the owning library server, Might return
14977: 'unavailable', 'not_found', 'forbidden', 'ok', or
14978: 'bad_request', also attempts to grab the metadata for the
14979: resource. Expects the local filesystem pathname
14980: (/home/httpd/html/res/....)
14981:
14982: =back
14983:
14984: =head2 Resource Information
14985:
14986: =over 4
14987:
14988: =item *
14989:
14990: EXT($varname,$symb,$udom,$uname,$usection,$recurse,$cid) : evaluates
14991: and returns the value of a variety of different possible values,
14992: $varname should be a request string, and the other parameters can be
14993: used to specify who and what one is asking about. Ordinarily, $cid
14994: does not need to be specified, as it is retrived from
14995: $env{'request.course.id'}, but &Apache::lonnet::EXT() is called
14996: within lonuserstate::loadmap() when initializing a course, before
14997: $env{'request.course.id'} has been set, so it needs to be provided
14998: in that one case.
14999:
15000: Possible values for $varname are environment.lastname (or other item
15001: from the envirnment hash), user.name (or someother aspect about the
15002: user), resource.0.maxtries (or some other part and parameter of a
15003: resource)
15004:
15005: =item *
15006:
15007: directcondval($number) : get current value of a condition; reads from a state
15008: string
15009:
15010: =item *
15011:
15012: condval($condidx) : value of condition index based on state
15013:
15014: =item *
15015:
15016: metadata($uri,$what,$toolsymb,$liburi,$prefix,$depthcount) : request a
15017: resource's metadata, $what should be either a specific key, or either
15018: 'keys' (to get a list of possible keys) or 'packages' to get a list of
15019: packages that this resource currently uses, the last 3 arguments are
15020: only used internally for recursive metadata.
15021:
15022: the toolsymb is only used where the uri is for an external tool (for which
15023: the uri as well as the symb are guaranteed to be unique).
15024:
15025: this function automatically caches all requests except any made recursively
15026: to retrieve a list of metadata keys for an imported library file ($liburi is
15027: defined).
15028:
15029: =item *
15030:
15031: metadata_query($query,$custom,$customshow) : make a metadata query against the
15032: network of library servers; returns file handle of where SQL and regex results
15033: will be stored for query
15034:
15035: =item *
15036:
15037: symbread($filename,$donotrecurse,$ignorecachednull,$checkforblock,$possibles) :
15038: return symbolic list entry (all arguments optional).
15039:
15040: Args: filename is the filename (including path) for the file for which a symb
15041: is required; donotrecurse, if true will prevent calls to allowed() being made
15042: to check access status if more than one resource was found in the bighash
15043: (see rev. 1.249) to avoid an infinite loop if an ambiguous resource is part of
15044: a randompick); ignorecachednull, if true will prevent a symb of '' being
15045: returned if $env{$cache_str} is defined as ''; checkforblock if true will
15046: cause possible symbs to be checked to determine if they are subject to content
15047: blocking, if so they will not be included as possible symbs; possibles is a
15048: ref to a hash, which, as a side effect, will be populated with all possible
15049: symbs (content blocking not tested).
15050:
15051: returns the data handle
15052:
15053: =item *
15054:
15055: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
15056: and is a possible symb for the URL in $thisfn, and if is an encrypted
15057: resource that the user accessed using /enc/ returns a 1 on success, 0
15058: on failure, user must be in a course, as it assumes the existence of
15059: the course initial hash, and uses $env('request.course.id'}. The third
15060: arg is an optional reference to a scalar. If this arg is passed in the
15061: call to symbverify, it will be set to 1 if the symb has been set to be
15062: encrypted; otherwise it will be null.
15063:
15064: =item *
15065:
15066: symbclean($symb) : removes versions numbers from a symb, returns the
15067: cleaned symb
15068:
15069: =item *
15070:
15071: is_on_map($uri) : checks if the $uri is somewhere on the current
15072: course map, user must be in a course for it to work.
15073:
15074: =item *
15075:
15076: numval($salt) : return random seed value (addend for rndseed)
15077:
15078: =item *
15079:
15080: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
15081: a random seed, all arguments are optional, if they aren't sent it uses the
15082: environment to derive them. Note: if symb isn't sent and it can't get one
15083: from &symbread it will use the current time as its return value
15084:
15085: =item *
15086:
15087: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
15088: unfakeable, receipt
15089:
15090: =item *
15091:
15092: receipt() : API to ireceipt working off of env values; given out to users
15093:
15094: =item *
15095:
15096: countacc($url) : count the number of accesses to a given URL
15097:
15098: =item *
15099:
15100: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
15101:
15102: =item *
15103:
15104: checkin($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 $tcrsid)
15105:
15106: =item *
15107:
15108: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
15109:
15110: =item *
15111:
15112: devalidate($symb) : devalidate temporary spreadsheet calculations,
15113: forcing spreadsheet to reevaluate the resource scores next time.
15114:
15115: =item *
15116:
15117: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
15118: when viewing in course context.
15119:
15120: input: six args -- filename (decluttered), course number, course domain,
15121: url, symb (if registered) and group (if this is a
15122: group item -- e.g., bulletin board, group page etc.).
15123:
15124: output: array of five scalars --
15125: $cfile -- url for file editing if editable on current server
15126: $home -- homeserver of resource (i.e., for author if published,
15127: or course if uploaded.).
15128: $switchserver -- 1 if server switch will be needed.
15129: $forceedit -- 1 if icon/link should be to go to edit mode
15130: $forceview -- 1 if icon/link should be to go to view mode
15131:
15132: =item *
15133:
15134: is_course_upload($file,$cnum,$cdom)
15135:
15136: Used in course context to determine if current file was uploaded to
15137: the course (i.e., would be found in /userfiles/docs on the course's
15138: homeserver.
15139:
15140: input: 3 args -- filename (decluttered), course number and course domain.
15141: output: boolean -- 1 if file was uploaded.
15142:
15143: =back
15144:
15145: =head2 Storing/Retreiving Data
15146:
15147: =over 4
15148:
15149: =item *
15150:
15151: store($storehash,$symb,$namespace,$udom,$uname,$laststore) : stores hash
15152: permanently for this url; hashref needs to be given and should be a \%hashname;
15153: the remaining args aren't required and if they aren't passed or are '' they will
15154: be derived from the env (with the exception of $laststore, which is an
15155: optional arg used when a user's submission is stored in grading).
15156: $laststore is $version=$timestamp, where $version is the most recent version
15157: number retrieved for the corresponding $symb in the $namespace db file, and
15158: $timestamp is the timestamp for that transaction (UNIX time).
15159: $laststore is currently only passed when cstore() is called by
15160: structuretags::finalize_storage().
15161:
15162: =item *
15163:
15164: cstore($storehash,$symb,$namespace,$udom,$uname,$laststore) : same as store
15165: but uses critical subroutine
15166:
15167: =item *
15168:
15169: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
15170: all args are optional
15171:
15172: =item *
15173:
15174: dumpstore($namespace,$udom,$uname,$regexp,$range) :
15175: dumps the complete (or key matching regexp) namespace into a hash
15176: ($udom, $uname, $regexp, $range are optional) for a namespace that is
15177: normally &store()ed into
15178:
15179: $range should be either an integer '100' (give me the first 100
15180: matching records)
15181: or be two integers sperated by a - with no spaces
15182: '30-50' (give me the 30th through the 50th matching
15183: records)
15184:
15185:
15186: =item *
15187:
15188: putstore($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog) :
15189: replaces a &store() version of data with a replacement set of data
15190: for a particular resource in a namespace passed in the $storehash hash
15191: reference. If $tolog is true, the transaction is logged in the courselog
15192: with an action=PUTSTORE.
15193:
15194: =item *
15195:
15196: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
15197: works very similar to store/cstore, but all data is stored in a
15198: temporary location and can be reset using tmpreset, $storehash should
15199: be a hash reference, returns nothing on success
15200:
15201: =item *
15202:
15203: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
15204: similar to restore, but all data is stored in a temporary location and
15205: can be reset using tmpreset. Returns a hash of values on success,
15206: error string otherwise.
15207:
15208: =item *
15209:
15210: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
15211: deltes all keys for $symb form the temporary storage hash.
15212:
15213: =item *
15214:
15215: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
15216: reference filled in from namesp ($udom and $uname are optional)
15217:
15218: =item *
15219:
15220: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
15221: namesp ($udom and $uname are optional)
15222:
15223: =item *
15224:
15225: dump($namespace,$udom,$uname,$regexp,$range) :
15226: dumps the complete (or key matching regexp) namespace into a hash
15227: ($udom, $uname, $regexp, $range are optional)
15228:
15229: $range should be either an integer '100' (give me the first 100
15230: matching records)
15231: or be two integers sperated by a - with no spaces
15232: '30-50' (give me the 30th through the 50th matching
15233: records)
15234: =item *
15235:
15236: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
15237: $store can be a scalar, an array reference, or if the amount to be
15238: incremented is > 1, a hash reference.
15239:
15240: ($udom and $uname are optional)
15241:
15242: =item *
15243:
15244: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
15245: ($udom and $uname are optional)
15246:
15247: =item *
15248:
15249: cput($namespace,$storehash,$udom,$uname) : critical put
15250: ($udom and $uname are optional)
15251:
15252: =item *
15253:
15254: newput($namespace,$storehash,$udom,$uname) :
15255:
15256: Attempts to store the items in the $storehash, but only if they don't
15257: currently exist, if this succeeds you can be certain that you have
15258: successfully created a new key value pair in the $namespace db.
15259:
15260:
15261: Args:
15262: $namespace: name of database to store values to
15263: $storehash: hashref to store to the db
15264: $udom: (optional) domain of user containing the db
15265: $uname: (optional) name of user caontaining the db
15266:
15267: Returns:
15268: 'ok' -> succeeded in storing all keys of $storehash
15269: 'key_exists: <key>' -> failed to anything out of $storehash, as at
15270: least <key> already existed in the db (other
15271: requested keys may also already exist)
15272: 'error: <msg>' -> unable to tie the DB or other error occurred
15273: 'con_lost' -> unable to contact request server
15274: 'refused' -> action was not allowed by remote machine
15275:
15276:
15277: =item *
15278:
15279: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
15280: reference filled in from namesp (encrypts the return communication)
15281: ($udom and $uname are optional)
15282:
15283: =item *
15284:
15285: log($udom,$name,$home,$message) : write to permanent log for user; use
15286: critical subroutine
15287:
15288: =item *
15289:
15290: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
15291: array reference filled in from namespace found in domain level on either
15292: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
15293:
15294: =item *
15295:
15296: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
15297: domain level either on specified domain server ($uhome) or primary domain
15298: server ($udom and $uhome are optional)
15299:
15300: =item *
15301:
15302: get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults
15303: for: authentication, language, quotas, timezone, date locale, and portal URL in
15304: the target domain.
15305:
15306: May also include additional key => value pairs for the following groups:
15307:
15308: =over
15309:
15310: =item
15311: disk quotas (MB allocated by default to portfolios and authoring spaces).
15312:
15313: =over
15314:
15315: =item defaultquota, authorquota
15316:
15317: =back
15318:
15319: =item
15320: tools (availability of aboutme page, blog, webDAV access for authoring spaces,
15321: portfolio for users).
15322:
15323: =over
15324:
15325: =item
15326: aboutme, blog, webdav, portfolio
15327:
15328: =back
15329:
15330: =item
15331: requestcourses: ability to request courses, and how requests are processed.
15332:
15333: =over
15334:
15335: =item
15336: official, unofficial, community, textbook, placement
15337:
15338: =back
15339:
15340: =item
15341: inststatus: types of institutional affiliation, and order in which they are displayed.
15342:
15343: =over
15344:
15345: =item
15346: inststatustypes, inststatusorder, inststatusguest
15347:
15348: =back
15349:
15350: =item
15351: coursedefaults: can PDF forms can be created, default credits for courses, default quotas (MB)
15352: for course's uploaded content.
15353:
15354: =over
15355:
15356: =item
15357: canuse_pdfforms, officialcredits, unofficialcredits, textbookcredits, officialquota, unofficialquota,
15358: communityquota, textbookquota, placementquota
15359:
15360: =back
15361:
15362: =item
15363: usersessions: set options for hosting of your users in other domains, and hosting of users from other domains
15364: on your servers.
15365:
15366: =over
15367:
15368: =item
15369: remotesessions, hostedsessions
15370:
15371: =back
15372:
15373: =back
15374:
15375: In cases where a domain coordinator has never used the "Set Domain Configuration"
15376: utility to create a configuration.db file on a domain's primary library server
15377: only the following domain defaults: auth_def, auth_arg_def, lang_def
15378: -- corresponding values are authentication type (internal, krb4, krb5,
15379: or localauth), initial password or a kerberos realm, language (e.g., en-us) --
15380: will be available. Values are retrieved from cache (if current), unless the
15381: optional $ignore_cache arg is true, or from domain's configuration.db (if available),
15382: or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab.
15383:
15384: Typical usage:
15385:
15386: %domdefaults = &get_domain_defaults($target_domain);
15387:
15388: =back
15389:
15390: =head2 Network Status Functions
15391:
15392: =over 4
15393:
15394: =item *
15395:
15396: dirlist() : return directory list based on URI (first arg).
15397:
15398: Inputs: 1 required, 5 optional.
15399:
15400: =over
15401:
15402: =item
15403: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
15404:
15405: =item
15406: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
15407:
15408: =item
15409: $username - username of user/course to be listed. Extracted from $uri if absent.
15410:
15411: =item
15412: $getpropath - boolean: 1 if prepend path using &propath().
15413:
15414: =item
15415: $getuserdir - boolean: 1 if prepend path for "userfiles".
15416:
15417: =item
15418: $alternateRoot - path to prepend in place of path from $uri.
15419:
15420: =back
15421:
15422: Returns: Array of up to two items.
15423:
15424: =over
15425:
15426: a reference to an array of files/subdirectories
15427:
15428: =over
15429:
15430: Each element in the array of files/subdirectories is a & separated list of
15431: item name and the result of running stat on the item. If dirlist was requested
15432: for a file instead of a directory, the item name will be ''. For a directory
15433: listing, if the item is a metadata file, the element will end &N&M
15434: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
15435: default copyright set (1).
15436:
15437: =back
15438:
15439: a scalar containing error condition (if encountered).
15440:
15441: =over
15442:
15443: =item
15444: no_host (no homeserver identified for $username:$domain).
15445:
15446: =item
15447: no_such_host (server contacted for listing not identified as valid host).
15448:
15449: =item
15450: con_lost (connection to remote server failed).
15451:
15452: =item
15453: refused (invalid $username:$domain received on lond side).
15454:
15455: =item
15456: no_such_dir (directory at specified path on lond side does not exist).
15457:
15458: =item
15459: empty (directory at specified path on lond side is empty).
15460:
15461: =over
15462:
15463: This is currently not encountered because the &ls3, &ls2,
15464: &ls (_handler) routines on the lond side do not filter out
15465: . and .. from a directory listing.
15466:
15467: =back
15468:
15469: =back
15470:
15471: =back
15472:
15473: =item *
15474:
15475: spareserver() : find server with least workload from spare.tab
15476:
15477:
15478: =item *
15479:
15480: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
15481: if there is no corresponding loncapa host.
15482:
15483: =back
15484:
15485:
15486: =head2 Apache Request
15487:
15488: =over 4
15489:
15490: =item *
15491:
15492: ssi($url,%hash) : server side include, does a complete request cycle on url to
15493: localhost, posts hash
15494:
15495: =back
15496:
15497: =head2 Data to String to Data
15498:
15499: =over 4
15500:
15501: =item *
15502:
15503: hash2str(%hash) : convert a hash into a string complete with escaping and '='
15504: and '&' separators, supports elements that are arrayrefs and hashrefs
15505:
15506: =item *
15507:
15508: hashref2str($hashref) : convert a hashref into a string complete with
15509: escaping and '=' and '&' separators, supports elements that are
15510: arrayrefs and hashrefs
15511:
15512: =item *
15513:
15514: arrayref2str($arrayref) : convert an arrayref into a string complete
15515: with escaping and '&' separators, supports elements that are arrayrefs
15516: and hashrefs
15517:
15518: =item *
15519:
15520: str2hash($string) : convert string to hash using unescaping and
15521: splitting on '=' and '&', supports elements that are arrayrefs and
15522: hashrefs
15523:
15524: =item *
15525:
15526: str2array($string) : convert string to hash using unescaping and
15527: splitting on '&', supports elements that are arrayrefs and hashrefs
15528:
15529: =back
15530:
15531: =head2 Logging Routines
15532:
15533:
15534: These routines allow one to make log messages in the lonnet.log and
15535: lonnet.perm logfiles.
15536:
15537: =over 4
15538:
15539: =item *
15540:
15541: logtouch() : make sure the logfile, lonnet.log, exists
15542:
15543: =item *
15544:
15545: logthis() : append message to the normal lonnet.log file, it gets
15546: preiodically rolled over and deleted.
15547:
15548: =item *
15549:
15550: logperm() : append a permanent message to lonnet.perm.log, this log
15551: file never gets deleted by any automated portion of the system, only
15552: messages of critical importance should go in here.
15553:
15554:
15555: =back
15556:
15557: =head2 General File Helper Routines
15558:
15559: =over 4
15560:
15561: =item *
15562:
15563: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
15564: (a) files in /uploaded
15565: (i) If a local copy of the file exists -
15566: compares modification date of local copy with last-modified date for
15567: definitive version stored on home server for course. If local copy is
15568: stale, requests a new version from the home server and stores it.
15569: If the original has been removed from the home server, then local copy
15570: is unlinked.
15571: (ii) If local copy does not exist -
15572: requests the file from the home server and stores it.
15573:
15574: If $caller is 'uploadrep':
15575: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
15576: for request for files originally uploaded via DOCS.
15577: - returns 'ok' if fresh local copy now available, -1 otherwise.
15578:
15579: Otherwise:
15580: This indicates a call from the content generation phase of the request.
15581: - returns the entire contents of the file or -1.
15582:
15583: (b) files in /res
15584: - returns the entire contents of a file or -1;
15585: it properly subscribes to and replicates the file if neccessary.
15586:
15587:
15588: =item *
15589:
15590: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
15591: reference
15592:
15593: returns either a stat() list of data about the file or an empty list
15594: if the file doesn't exist or couldn't find out about it (connection
15595: problems or user unknown)
15596:
15597: =item *
15598:
15599: filelocation($dir,$file) : returns file system location of a file
15600: based on URI; meant to be "fairly clean" absolute reference, $dir is a
15601: directory that relative $file lookups are to looked in ($dir of /a/dir
15602: and a file of ../bob will become /a/bob)
15603:
15604: =item *
15605:
15606: hreflocation($dir,$file) : returns file system location or a URL; same as
15607: filelocation except for hrefs
15608:
15609: =item *
15610:
15611: declutter() : declutters URLs -- remove beginning slashes, 'res' etc.
15612: also removes beginning /home/httpd/html unless /priv/ follows it.
15613:
15614: =back
15615:
15616: =head2 Usererfile file routines (/uploaded*)
15617:
15618: =over 4
15619:
15620: =item *
15621:
15622: userfileupload(): main rotine for putting a file in a user or course's
15623: filespace, arguments are,
15624:
15625: formname - required - this is the name of the element in $env where the
15626: filename, and the contents of the file to create/modifed exist
15627: the filename is in $env{'form.'.$formname.'.filename'} and the
15628: contents of the file is located in $env{'form.'.$formname}
15629: context - if coursedoc, store the file in the course of the active role
15630: of the current user;
15631: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
15632: if 'canceloverwrite': delete file in tmp/overwrites directory
15633: subdir - required - subdirectory to put the file in under ../userfiles/
15634: if undefined, it will be placed in "unknown"
15635:
15636: (This routine calls clean_filename() to remove any dangerous
15637: characters from the filename, and then calls finuserfileupload() to
15638: complete the transaction)
15639:
15640: returns either the url of the uploaded file (/uploaded/....) if successful
15641: and /adm/notfound.html if unsuccessful
15642:
15643: =item *
15644:
15645: clean_filename(): routine for cleaing a filename up for storage in
15646: userfile space, argument is:
15647:
15648: filename - proposed filename
15649:
15650: returns: the new clean filename
15651:
15652: =item *
15653:
15654: finishuserfileupload(): routine that creates and sends the file to
15655: userspace, probably shouldn't be called directly
15656:
15657: docuname: username or courseid of destination for the file
15658: docudom: domain of user/course of destination for the file
15659: formname: same as for userfileupload()
15660: fname: filename (including subdirectories) for the file
15661: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
15662: allfiles: reference to hash used to store objects found by parser
15663: codebase: reference to hash used for codebases of java objects found by parser
15664: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
15665: thumbheight: height (pixels) of thumbnail to be created for uploaded image
15666: resizewidth: width to be used to resize image using resizeImage from ImageMagick
15667: resizeheight: height to be used to resize image using resizeImage from ImageMagick
15668: context: if 'overwrite', will move the uploaded file from its temporary location to
15669: userfiles to facilitate overwriting a previously uploaded file with same name.
15670: mimetype: reference to scalar to accommodate mime type determined
15671: from File::MMagic if $parser = parse.
15672:
15673: returns either the url of the uploaded file (/uploaded/....) if successful
15674: and /adm/notfound.html if unsuccessful (or an error message if context
15675: was 'overwrite').
15676:
15677:
15678: =item *
15679:
15680: renameuserfile(): renames an existing userfile to a new name
15681:
15682: Args:
15683: docuname: username or courseid of destination for the file
15684: docudom: domain of user/course of destination for the file
15685: old: current file name (including any subdirs under userfiles)
15686: new: desired file name (including any subdirs under userfiles)
15687:
15688: =item *
15689:
15690: mkdiruserfile(): creates a directory is a userfiles dir
15691:
15692: Args:
15693: docuname: username or courseid of destination for the file
15694: docudom: domain of user/course of destination for the file
15695: dir: dir to create (including any subdirs under userfiles)
15696:
15697: =item *
15698:
15699: removeuserfile(): removes a file that exists in userfiles
15700:
15701: Args:
15702: docuname: username or courseid of destination for the file
15703: docudom: domain of user/course of destination for the file
15704: fname: filname to delete (including any subdirs under userfiles)
15705:
15706: =item *
15707:
15708: removeuploadedurl(): convience function for removeuserfile()
15709:
15710: Args:
15711: url: a full /uploaded/... url to delete
15712:
15713: =item *
15714:
15715: get_portfile_permissions():
15716: Args:
15717: domain: domain of user or course contain the portfolio files
15718: user: name of user or num of course contain the portfolio files
15719: Returns:
15720: hashref of a dump of the proper file_permissions.db
15721:
15722:
15723: =item *
15724:
15725: get_access_controls():
15726:
15727: Args:
15728: current_permissions: the hash ref returned from get_portfile_permissions()
15729: group: (optional) the group you want the files associated with
15730: file: (optional) the file you want access info on
15731:
15732: Returns:
15733: a hash (keys are file names) of hashes containing
15734: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
15735: values are XML containing access control settings (see below)
15736:
15737: Internal notes:
15738:
15739: access controls are stored in file_permissions.db as key=value pairs.
15740: key -> path to file/file_name\0uniqueID:scope_end_start
15741: where scope -> public,guest,course,group,domains or users.
15742: end -> UNIX time for end of access (0 -> no end date)
15743: start -> UNIX time for start of access
15744:
15745: value -> XML description of access control
15746: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
15747: <start></start>
15748: <end></end>
15749:
15750: <password></password> for scope type = guest
15751:
15752: <domain></domain> for scope type = course or group
15753: <number></number>
15754: <roles id="">
15755: <role></role>
15756: <access></access>
15757: <section></section>
15758: <group></group>
15759: </roles>
15760:
15761: <dom></dom> for scope type = domains
15762:
15763: <users> for scope type = users
15764: <user>
15765: <uname></uname>
15766: <udom></udom>
15767: </user>
15768: </users>
15769: </scope>
15770:
15771: Access data is also aggregated for each file in an additional key=value pair:
15772: key -> path to file/file_name\0accesscontrol
15773: value -> reference to hash
15774: hash contains key = value pairs
15775: where key = uniqueID:scope_end_start
15776: value = UNIX time record was last updated
15777:
15778: Used to improve speed of look-ups of access controls for each file.
15779:
15780: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
15781:
15782: =item *
15783:
15784: modify_access_controls():
15785:
15786: Modifies access controls for a portfolio file
15787: Args
15788: 1. file name
15789: 2. reference to hash of required changes,
15790: 3. domain
15791: 4. username
15792: where domain,username are the domain of the portfolio owner
15793: (either a user or a course)
15794:
15795: Returns:
15796: 1. result of additions or updates ('ok' or 'error', with error message).
15797: 2. result of deletions ('ok' or 'error', with error message).
15798: 3. reference to hash of any new or updated access controls.
15799: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
15800: key = integer (inbound ID)
15801: value = uniqueID
15802:
15803: =item *
15804:
15805: get_timebased_id():
15806:
15807: Attempts to get a unique timestamp-based suffix for use with items added to a
15808: course via the Course Editor (e.g., folders, composite pages,
15809: group bulletin boards).
15810:
15811: Args: (first three required; six others optional)
15812:
15813: 1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
15814: docssequence, or name of group
15815:
15816: 2. keyid (alphanumeric): name of temporary locking key in hash,
15817: e.g., num, boardids
15818:
15819: 3. namespace: name of gdbm file used to store suffixes already assigned;
15820: file will be named nohist_namespace.db
15821:
15822: 4. cdom: domain of course; default is current course domain from %env
15823:
15824: 5. cnum: course number; default is current course number from %env
15825:
15826: 6. idtype: set to concat if an additional digit is to be appended to the
15827: unix timestamp to form the suffix, if the plain timestamp is already
15828: in use. Default is to not do this, but simply increment the unix
15829: timestamp by 1 until a unique key is obtained.
15830:
15831: 7. who: holder of locking key; defaults to user:domain for user.
15832:
15833: 8. locktries: number of attempts to obtain a lock (sleep of 1s before
15834: retrying); default is 3.
15835:
15836: 9. maxtries: number of attempts to obtain a unique suffix; default is 20.
15837:
15838: Returns:
15839:
15840: 1. suffix obtained (numeric)
15841:
15842: 2. result of deleting locking key (ok if deleted, or lock never obtained)
15843:
15844: 3. error: contains (localized) error message if an error occurred.
15845:
15846:
15847: =back
15848:
15849: =head2 HTTP Helper Routines
15850:
15851: =over 4
15852:
15853: =item *
15854:
15855: escape() : unpack non-word characters into CGI-compatible hex codes
15856:
15857: =item *
15858:
15859: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
15860:
15861: =back
15862:
15863: =head1 PRIVATE SUBROUTINES
15864:
15865: =head2 Underlying communication routines (Shouldn't call)
15866:
15867: =over 4
15868:
15869: =item *
15870:
15871: subreply() : tries to pass a message to lonc, returns con_lost if incapable
15872:
15873: =item *
15874:
15875: reply() : uses subreply to send a message to remote machine, logs all failures
15876:
15877: =item *
15878:
15879: critical() : passes a critical message to another server; if cannot
15880: get through then place message in connection buffer directory and
15881: returns con_delayed, if incapable of saving message, returns
15882: con_failed
15883:
15884: =item *
15885:
15886: reconlonc() : tries to reconnect lonc client processes.
15887:
15888: =back
15889:
15890: =head2 Resource Access Logging
15891:
15892: =over 4
15893:
15894: =item *
15895:
15896: flushcourselogs() : flush (save) buffer logs and access logs
15897:
15898: =item *
15899:
15900: courselog($what) : save message for course in hash
15901:
15902: =item *
15903:
15904: courseacclog($what) : save message for course using &courselog(). Perform
15905: special processing for specific resource types (problems, exams, quizzes, etc).
15906:
15907: =item *
15908:
15909: goodbye() : flush course logs and log shutting down; it is called in srm.conf
15910: as a PerlChildExitHandler
15911:
15912: =back
15913:
15914: =head2 Other
15915:
15916: =over 4
15917:
15918: =item *
15919:
15920: symblist($mapname,%newhash) : update symbolic storage links
15921:
15922: =back
15923:
15924: =cut
15925:
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to lonnet.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / lonnet / perl