1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1412 2019/07/23 01:30:44 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: =pod
31:
32: =head1 NAME
33:
34: Apache::lonnet.pm
35:
36: =head1 SYNOPSIS
37:
38: This file is an interface to the lonc processes of
39: the LON-CAPA network as well as set of elaborated functions for handling information
40: necessary for navigating through a given cluster of LON-CAPA machines within a
41: domain. There are over 40 specialized functions in this module which handle the
42: reading and transmission of metadata, user information (ids, names, environments, roles,
43: logs), file information (storage, reading, directories, extensions, replication, embedded
44: styles and descriptors), educational resources (course descriptions, section names and
45: numbers), url hashing (to assign roles on a url basis), and translating abbreviated symbols to
46: and from more descriptive phrases or explanations.
47:
48: This is part of the LearningOnline Network with CAPA project
49: described at http://www.lon-capa.org.
50:
51: =head1 Package Variables
52:
53: These are largely undocumented, so if you decipher one please note it here.
54:
55: =over 4
56:
57: =item $processmarker
58:
59: Contains the time this process was started and this servers host id.
60:
61: =item $dumpcount
62:
63: Counts the number of times a message log flush has been attempted (regardless
64: of success) by this process. Used as part of the filename when messages are
65: delayed.
66:
67: =back
68:
69: =cut
70:
71: package Apache::lonnet;
72:
73: use strict;
74: use HTTP::Date;
75: use Image::Magick;
76: use CGI::Cookie;
77:
78: use Encode;
79:
80: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir $deftex
81: $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease
82: %managerstab);
83:
84: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
85: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
86: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
87: %courseownerbuf, %coursetypebuf,$locknum);
88:
89: use IO::Socket;
90: use GDBM_File;
91: use HTML::LCParser;
92: use Fcntl qw(:flock);
93: use Storable qw(thaw nfreeze);
94: use Time::HiRes qw( sleep gettimeofday tv_interval );
95: use Cache::Memcached;
96: use Digest::MD5;
97: use Math::Random;
98: use File::MMagic;
99: use LONCAPA qw(:DEFAULT :match);
100: use LONCAPA::Configuration;
101: use LONCAPA::lonmetadata;
102: use LONCAPA::Lond;
103: use LONCAPA::LWPReq;
104: use LONCAPA::transliterate;
105:
106: use File::Copy;
107:
108: my $readit;
109: my $max_connection_retries = 20; # Or some such value.
110:
111: require Exporter;
112:
113: our @ISA = qw (Exporter);
114: our @EXPORT = qw(%env);
115:
116:
117: # ------------------------------------ Logging (parameters, docs, slots, roles)
118: {
119: my $logid;
120: sub write_log {
121: my ($context,$hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
122: if ($context eq 'course') {
123: if (($cnum eq '') || ($cdom eq '')) {
124: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
125: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
126: }
127: }
128: $logid ++;
129: my $now = time();
130: my $id=$now.'00000'.$$.'00000'.$logid;
131: my $logentry = {
132: $id => {
133: 'exe_uname' => $env{'user.name'},
134: 'exe_udom' => $env{'user.domain'},
135: 'exe_time' => $now,
136: 'exe_ip' => $ENV{'REMOTE_ADDR'},
137: 'delflag' => $delflag,
138: 'logentry' => $storehash,
139: 'uname' => $uname,
140: 'udom' => $udom,
141: }
142: };
143: return &put('nohist_'.$hash_name,$logentry,$cdom,$cnum);
144: }
145: }
146:
147: sub logtouch {
148: my $execdir=$perlvar{'lonDaemons'};
149: unless (-e "$execdir/logs/lonnet.log") {
150: open(my $fh,">>","$execdir/logs/lonnet.log");
151: close $fh;
152: }
153: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
154: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
155: }
156:
157: sub logthis {
158: my $message=shift;
159: my $execdir=$perlvar{'lonDaemons'};
160: my $now=time;
161: my $local=localtime($now);
162: if (open(my $fh,">>","$execdir/logs/lonnet.log")) {
163: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
164: print $fh $logstring;
165: close($fh);
166: }
167: return 1;
168: }
169:
170: sub logperm {
171: my $message=shift;
172: my $execdir=$perlvar{'lonDaemons'};
173: my $now=time;
174: my $local=localtime($now);
175: if (open(my $fh,">>","$execdir/logs/lonnet.perm.log")) {
176: print $fh "$now:$message:$local\n";
177: close($fh);
178: }
179: return 1;
180: }
181:
182: sub create_connection {
183: my ($hostname,$lonid) = @_;
184: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
185: Type => SOCK_STREAM,
186: Timeout => 10);
187: return 0 if (!$client);
188: print $client (join(':',$hostname,$lonid,&machine_ids($hostname),$loncaparevs{$lonid})."\n");
189: my $result = <$client>;
190: chomp($result);
191: return 1 if ($result eq 'done');
192: return 0;
193: }
194:
195: sub get_server_timezone {
196: my ($cnum,$cdom) = @_;
197: my $home=&homeserver($cnum,$cdom);
198: if ($home ne 'no_host') {
199: my $cachetime = 24*3600;
200: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
201: if (defined($cached)) {
202: return $timezone;
203: } else {
204: my $timezone = &reply('servertimezone',$home);
205: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
206: }
207: }
208: }
209:
210: sub get_server_distarch {
211: my ($lonhost,$ignore_cache) = @_;
212: if (defined($lonhost)) {
213: if (!defined(&hostname($lonhost))) {
214: return;
215: }
216: my $cachetime = 12*3600;
217: if (!$ignore_cache) {
218: my ($distarch,$cached)=&is_cached_new('serverdistarch',$lonhost);
219: if (defined($cached)) {
220: return $distarch;
221: }
222: }
223: my $rep = &reply('serverdistarch',$lonhost);
224: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
225: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
226: $rep eq '') {
227: return &do_cache_new('serverdistarch',$lonhost,$rep,$cachetime);
228: }
229: }
230: return;
231: }
232:
233: sub get_servercerts_info {
234: my ($lonhost,$hostname,$context) = @_;
235: return if ($lonhost eq '');
236: if ($hostname eq '') {
237: $hostname = &hostname($lonhost);
238: }
239: return if ($hostname eq '');
240: my ($rep,$uselocal);
241: if ($context eq 'install') {
242: $uselocal = 1;
243: } elsif (grep { $_ eq $lonhost } ¤t_machine_ids()) {
244: $uselocal = 1;
245: }
246: if (($context ne 'cgi') && ($context ne 'install') && ($uselocal)) {
247: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
248: if ($distro eq '') {
249: $uselocal = 0;
250: } elsif ($distro =~ /^(?:centos|redhat|scientific)(\d+)$/) {
251: if ($1 < 6) {
252: $uselocal = 0;
253: }
254: } elsif ($distro =~ /^(?:sles)(\d+)$/) {
255: if ($1 < 12) {
256: $uselocal = 0;
257: }
258: }
259: }
260: if ($uselocal) {
261: $rep = LONCAPA::Lond::server_certs(\%perlvar,$lonhost,$hostname);
262: } else {
263: $rep=&reply('servercerts',$lonhost);
264: }
265: my ($result,%returnhash);
266: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
267: ($rep eq 'unknown_cmd')) {
268: $result = $rep;
269: } else {
270: $result = 'ok';
271: my @pairs=split(/\&/,$rep);
272: foreach my $item (@pairs) {
273: my ($key,$value)=split(/=/,$item,2);
274: my $what = &unescape($key);
275: $returnhash{$what}=&thaw_unescape($value);
276: }
277: }
278: return ($result,\%returnhash);
279: }
280:
281: sub get_server_loncaparev {
282: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
283: if (defined($lonhost)) {
284: if (!defined(&hostname($lonhost))) {
285: undef($lonhost);
286: }
287: }
288: if (!defined($lonhost)) {
289: if (defined(&domain($dom,'primary'))) {
290: $lonhost=&domain($dom,'primary');
291: if ($lonhost eq 'no_host') {
292: undef($lonhost);
293: }
294: }
295: }
296: if (defined($lonhost)) {
297: my $cachetime = 12*3600;
298: if (!$ignore_cache) {
299: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
300: if (defined($cached)) {
301: return $loncaparev;
302: }
303: }
304: my ($answer,$loncaparev);
305: my @ids=¤t_machine_ids();
306: if (grep(/^\Q$lonhost\E$/,@ids)) {
307: $answer = $perlvar{'lonVersion'};
308: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
309: $loncaparev = $1;
310: }
311: } else {
312: $answer = &reply('serverloncaparev',$lonhost);
313: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
314: if ($caller eq 'loncron') {
315: my $hostname = &hostname($lonhost);
316: my $protocol = $protocol{$lonhost};
317: $protocol = 'http' if ($protocol ne 'https');
318: my $url = $protocol.'://'.$hostname.'/adm/about.html';
319: my $request=new HTTP::Request('GET',$url);
320: my $response=&LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,4,1);
321: unless ($response->is_error()) {
322: my $content = $response->content;
323: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
324: $loncaparev = $1;
325: }
326: }
327: } else {
328: $loncaparev = $loncaparevs{$lonhost};
329: }
330: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
331: $loncaparev = $1;
332: }
333: }
334: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
335: }
336: }
337:
338: sub get_server_homeID {
339: my ($hostname,$ignore_cache,$caller) = @_;
340: unless ($ignore_cache) {
341: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
342: if (defined($cached)) {
343: return $serverhomeID;
344: }
345: }
346: my $cachetime = 12*3600;
347: my $serverhomeID;
348: if ($caller eq 'loncron') {
349: my @machine_ids = &machine_ids($hostname);
350: foreach my $id (@machine_ids) {
351: my $response = &reply('serverhomeID',$id);
352: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
353: $serverhomeID = $response;
354: last;
355: }
356: }
357: if ($serverhomeID eq '') {
358: $serverhomeID = $machine_ids[-1];
359: }
360: } else {
361: $serverhomeID = $serverhomeIDs{$hostname};
362: }
363: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
364: }
365:
366: sub get_remote_globals {
367: my ($lonhost,$whathash,$ignore_cache) = @_;
368: my ($result,%returnhash,%whatneeded);
369: if (ref($whathash) eq 'HASH') {
370: foreach my $what (sort(keys(%{$whathash}))) {
371: my $hashid = $lonhost.'-'.$what;
372: my ($response,$cached);
373: unless ($ignore_cache) {
374: ($response,$cached)=&is_cached_new('lonnetglobal',$hashid);
375: }
376: if (defined($cached)) {
377: $returnhash{$what} = $response;
378: } else {
379: $whatneeded{$what} = 1;
380: }
381: }
382: if (keys(%whatneeded) == 0) {
383: $result = 'ok';
384: } else {
385: my $requested = &freeze_escape(\%whatneeded);
386: my $rep=&reply('readlonnetglobal:'.$requested,$lonhost);
387: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
388: ($rep eq 'unknown_cmd')) {
389: $result = $rep;
390: } else {
391: $result = 'ok';
392: my @pairs=split(/\&/,$rep);
393: foreach my $item (@pairs) {
394: my ($key,$value)=split(/=/,$item,2);
395: my $what = &unescape($key);
396: my $hashid = $lonhost.'-'.$what;
397: $returnhash{$what}=&thaw_unescape($value);
398: &do_cache_new('lonnetglobal',$hashid,$returnhash{$what},600);
399: }
400: }
401: }
402: }
403: return ($result,\%returnhash);
404: }
405:
406: sub remote_devalidate_cache {
407: my ($lonhost,$cachekeys) = @_;
408: my $items;
409: return unless (ref($cachekeys) eq 'ARRAY');
410: my $cachestr = join('&',@{$cachekeys});
411: my $response = &reply('devalidatecache:'.&escape($cachestr),$lonhost);
412: return $response;
413: }
414:
415: # -------------------------------------------------- Non-critical communication
416: sub subreply {
417: my ($cmd,$server)=@_;
418: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
419: #
420: # With loncnew process trimming, there's a timing hole between lonc server
421: # process exit and the master server picking up the listen on the AF_UNIX
422: # socket. In that time interval, a lock file will exist:
423:
424: my $lockfile=$peerfile.".lock";
425: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
426: sleep(0.1);
427: }
428: # At this point, either a loncnew parent is listening or an old lonc
429: # or loncnew child is listening so we can connect or everything's dead.
430: #
431: # We'll give the connection a few tries before abandoning it. If
432: # connection is not possible, we'll con_lost back to the client.
433: #
434: my $client;
435: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
436: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
437: Type => SOCK_STREAM,
438: Timeout => 10);
439: if ($client) {
440: last; # Connected!
441: } else {
442: &create_connection(&hostname($server),$server);
443: }
444: sleep(0.1); # Try again later if failed connection.
445: }
446: my $answer;
447: if ($client) {
448: print $client "sethost:$server:$cmd\n";
449: $answer=<$client>;
450: if (!$answer) { $answer="con_lost"; }
451: chomp($answer);
452: } else {
453: $answer = 'con_lost'; # Failed connection.
454: }
455: return $answer;
456: }
457:
458: sub reply {
459: my ($cmd,$server)=@_;
460: unless (defined(&hostname($server))) { return 'no_such_host'; }
461: my $answer=subreply($cmd,$server);
462: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
463: my $logged = $cmd;
464: if ($cmd =~ /^encrypt:([^:]+):/) {
465: my $subcmd = $1;
466: if (($subcmd eq 'auth') || ($subcmd eq 'passwd') ||
467: ($subcmd eq 'changeuserauth') || ($subcmd eq 'makeuser') ||
468: ($subcmd eq 'putdom') || ($subcmd eq 'autoexportgrades')) {
469: (undef,undef,my @rest) = split(/:/,$cmd);
470: if (($subcmd eq 'auth') || ($subcmd eq 'putdom')) {
471: splice(@rest,2,1,'Hidden');
472: } elsif ($subcmd eq 'passwd') {
473: splice(@rest,2,2,('Hidden','Hidden'));
474: } elsif (($subcmd eq 'changeuserauth') || ($subcmd eq 'makeuser') ||
475: ($subcmd eq 'autoexportgrades')) {
476: splice(@rest,3,1,'Hidden');
477: }
478: $logged = join(':',('encrypt:'.$subcmd,@rest));
479: }
480: }
481: &logthis("<font color=\"blue\">WARNING:".
482: " $logged to $server returned $answer</font>");
483: }
484: return $answer;
485: }
486:
487: # ----------------------------------------------------------- Send USR1 to lonc
488:
489: sub reconlonc {
490: my ($lonid) = @_;
491: if ($lonid) {
492: my $hostname = &hostname($lonid);
493: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
494: if ($hostname && -e $peerfile) {
495: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
496: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
497: Type => SOCK_STREAM,
498: Timeout => 10);
499: if ($client) {
500: print $client ("reset_retries\n");
501: my $answer=<$client>;
502: #reset just this one.
503: }
504: }
505: return;
506: }
507:
508: &logthis("Trying to reconnect lonc");
509: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
510: if (open(my $fh,"<",$loncfile)) {
511: my $loncpid=<$fh>;
512: chomp($loncpid);
513: if (kill 0 => $loncpid) {
514: &logthis("lonc at pid $loncpid responding, sending USR1");
515: kill USR1 => $loncpid;
516: sleep 1;
517: } else {
518: &logthis(
519: "<font color=\"blue\">WARNING:".
520: " lonc at pid $loncpid not responding, giving up</font>");
521: }
522: } else {
523: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
524: }
525: }
526:
527: # ------------------------------------------------------ Critical communication
528:
529: sub critical {
530: my ($cmd,$server)=@_;
531: unless (&hostname($server)) {
532: &logthis("<font color=\"blue\">WARNING:".
533: " Critical message to unknown server ($server)</font>");
534: return 'no_such_host';
535: }
536: my $answer=reply($cmd,$server);
537: if ($answer eq 'con_lost') {
538: &reconlonc($server);
539: my $answer=reply($cmd,$server);
540: if ($answer eq 'con_lost') {
541: my $now=time;
542: my $middlename=$cmd;
543: $middlename=substr($middlename,0,16);
544: $middlename=~s/\W//g;
545: my $dfilename=
546: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
547: $dumpcount++;
548: {
549: my $dfh;
550: if (open($dfh,">",$dfilename)) {
551: print $dfh "$cmd\n";
552: close($dfh);
553: }
554: }
555: sleep 1;
556: my $wcmd='';
557: {
558: my $dfh;
559: if (open($dfh,"<",$dfilename)) {
560: $wcmd=<$dfh>;
561: close($dfh);
562: }
563: }
564: chomp($wcmd);
565: if ($wcmd eq $cmd) {
566: &logthis("<font color=\"blue\">WARNING: ".
567: "Connection buffer $dfilename: $cmd</font>");
568: &logperm("D:$server:$cmd");
569: return 'con_delayed';
570: } else {
571: &logthis("<font color=\"red\">CRITICAL:"
572: ." Critical connection failed: $server $cmd</font>");
573: &logperm("F:$server:$cmd");
574: return 'con_failed';
575: }
576: }
577: }
578: return $answer;
579: }
580:
581: # ------------------------------------------- check if return value is an error
582:
583: sub error {
584: my ($result) = @_;
585: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
586: if ($2 == 2) { return undef; }
587: return $1;
588: }
589: return undef;
590: }
591:
592: sub convert_and_load_session_env {
593: my ($lonidsdir,$handle)=@_;
594: my @profile;
595: {
596: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
597: if (!$opened) {
598: return 0;
599: }
600: flock($idf,LOCK_SH);
601: @profile=<$idf>;
602: close($idf);
603: }
604: my %temp_env;
605: foreach my $line (@profile) {
606: if ($line !~ m/=/) {
607: return 0;
608: }
609: chomp($line);
610: my ($envname,$envvalue)=split(/=/,$line,2);
611: $temp_env{&unescape($envname)} = &unescape($envvalue);
612: }
613: unlink("$lonidsdir/$handle.id");
614: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
615: 0640)) {
616: %disk_env = %temp_env;
617: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
618: untie(%disk_env);
619: }
620: return 1;
621: }
622:
623: # ------------------------------------------- Transfer profile into environment
624: my $env_loaded;
625: sub transfer_profile_to_env {
626: my ($lonidsdir,$handle,$force_transfer) = @_;
627: if (!$force_transfer && $env_loaded) { return; }
628:
629: if (!defined($lonidsdir)) {
630: $lonidsdir = $perlvar{'lonIDsDir'};
631: }
632: if (!defined($handle)) {
633: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
634: }
635:
636: my $convert;
637: {
638: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
639: if (!$opened) {
640: return;
641: }
642: flock($idf,LOCK_SH);
643: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
644: &GDBM_READER(),0640)) {
645: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
646: untie(%disk_env);
647: } else {
648: $convert = 1;
649: }
650: }
651: if ($convert) {
652: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
653: &logthis("Failed to load session, or convert session.");
654: }
655: }
656:
657: my %remove;
658: while ( my $envname = each(%env) ) {
659: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
660: if ($time < time-300) {
661: $remove{$key}++;
662: }
663: }
664: }
665:
666: $env{'user.environment'} = "$lonidsdir/$handle.id";
667: $env_loaded=1;
668: foreach my $expired_key (keys(%remove)) {
669: &delenv($expired_key);
670: }
671: }
672:
673: # ---------------------------------------------------- Check for valid session
674: sub check_for_valid_session {
675: my ($r,$name,$userhashref,$domref) = @_;
676: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
677: my ($lonidsdir,$linkname,$pubname,$secure,$lonid);
678: if ($name eq 'lonDAV') {
679: $lonidsdir=$r->dir_config('lonDAVsessDir');
680: } else {
681: $lonidsdir=$r->dir_config('lonIDsDir');
682: if ($name eq '') {
683: $name = 'lonID';
684: }
685: }
686: if ($name eq 'lonID') {
687: $secure = 'lonSID';
688: $linkname = 'lonLinkID';
689: $pubname = 'lonPubID';
690: if (exists($cookies{$secure})) {
691: $lonid=$cookies{$secure};
692: } elsif (exists($cookies{$name})) {
693: $lonid=$cookies{$name};
694: } elsif ((exists($cookies{$linkname})) && ($ENV{'SERVER_PORT'} != 443)) {
695: $lonid=$cookies{$linkname};
696: } elsif (exists($cookies{$pubname})) {
697: $lonid=$cookies{$pubname};
698: }
699: } else {
700: $lonid=$cookies{$name};
701: }
702: return undef if (!$lonid);
703:
704: my $handle=&LONCAPA::clean_handle($lonid->value);
705: if (-l "$lonidsdir/$handle.id") {
706: my $link = readlink("$lonidsdir/$handle.id");
707: if ((-e $link) && ($link =~ m{^\Q$lonidsdir\E/(.+)\.id$})) {
708: $handle = $1;
709: }
710: }
711: if (!-e "$lonidsdir/$handle.id") {
712: if ((ref($domref)) && ($name eq 'lonID') &&
713: ($handle =~ /^($match_username)\_\d+\_($match_domain)\_(.+)$/)) {
714: my ($possuname,$possudom,$possuhome) = ($1,$2,$3);
715: if ((&domain($possudom) ne '') && (&homeserver($possuname,$possudom) eq $possuhome)) {
716: $$domref = $possudom;
717: }
718: }
719: return undef;
720: }
721:
722: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
723: return undef if (!$opened);
724:
725: flock($idf,LOCK_SH);
726: my %disk_env;
727: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
728: &GDBM_READER(),0640)) {
729: return undef;
730: }
731:
732: if (!defined($disk_env{'user.name'})
733: || !defined($disk_env{'user.domain'})) {
734: untie(%disk_env);
735: return undef;
736: }
737:
738: if (ref($userhashref) eq 'HASH') {
739: $userhashref->{'name'} = $disk_env{'user.name'};
740: $userhashref->{'domain'} = $disk_env{'user.domain'};
741: $userhashref->{'lti'} = $disk_env{'request.lti.login'};
742: if ($userhashref->{'lti'}) {
743: $userhashref->{'ltitarget'} = $disk_env{'request.lti.target'};
744: $userhashref->{'ltiuri'} = $disk_env{'request.lti.uri'};
745: }
746: }
747: untie(%disk_env);
748:
749: return $handle;
750: }
751:
752: sub timed_flock {
753: my ($file,$lock_type) = @_;
754: my $failed=0;
755: eval {
756: local $SIG{__DIE__}='DEFAULT';
757: local $SIG{ALRM}=sub {
758: $failed=1;
759: die("failed lock");
760: };
761: alarm(13);
762: flock($file,$lock_type);
763: alarm(0);
764: };
765: if ($failed) {
766: return undef;
767: } else {
768: return 1;
769: }
770: }
771:
772: sub get_sessionfile_vars {
773: my ($handle,$lonidsdir,$storearr) = @_;
774: my %returnhash;
775: unless (ref($storearr) eq 'ARRAY') {
776: return %returnhash;
777: }
778: if (-l "$lonidsdir/$handle.id") {
779: my $link = readlink("$lonidsdir/$handle.id");
780: if ((-e $link) && ($link =~ m{^\Q$lonidsdir\E/(.+)\.id$})) {
781: $handle = $1;
782: }
783: }
784: if ((-e "$lonidsdir/$handle.id") &&
785: ($handle =~ /^($match_username)\_\d+\_($match_domain)\_(.+)$/)) {
786: my ($possuname,$possudom,$possuhome) = ($1,$2,$3);
787: if ((&domain($possudom) ne '') && (&homeserver($possuname,$possudom) eq $possuhome)) {
788: if (open(my $idf,'+<',"$lonidsdir/$handle.id")) {
789: flock($idf,LOCK_SH);
790: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
791: &GDBM_READER(),0640)) {
792: foreach my $item (@{$storearr}) {
793: $returnhash{$item} = $disk_env{$item};
794: }
795: untie(%disk_env);
796: }
797: }
798: }
799: }
800: return %returnhash;
801: }
802:
803: # ---------------------------------------------------------- Append Environment
804:
805: sub appenv {
806: my ($newenv,$roles) = @_;
807: if (ref($newenv) eq 'HASH') {
808: foreach my $key (keys(%{$newenv})) {
809: my $refused = 0;
810: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
811: $refused = 1;
812: if (ref($roles) eq 'ARRAY') {
813: my ($type,$role) = ($key =~ m{^user\.(role|priv)\.(.+?)\./});
814: if (grep(/^\Q$role\E$/,@{$roles})) {
815: $refused = 0;
816: }
817: }
818: }
819: if ($refused) {
820: &logthis("<font color=\"blue\">WARNING: ".
821: "Attempt to modify environment ".$key." to ".$newenv->{$key}
822: .'</font>');
823: delete($newenv->{$key});
824: } else {
825: $env{$key}=$newenv->{$key};
826: }
827: }
828: my $lonids = $perlvar{'lonIDsDir'};
829: if ($env{'user.environment'} =~ m{^\Q$lonids/\E$match_username\_\d+\_$match_domain\_[\w\-.]+\.id$}) {
830: my $opened = open(my $env_file,'+<',$env{'user.environment'});
831: if ($opened
832: && &timed_flock($env_file,LOCK_EX)
833: &&
834: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
835: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
836: while (my ($key,$value) = each(%{$newenv})) {
837: $disk_env{$key} = $value;
838: }
839: untie(%disk_env);
840: }
841: }
842: }
843: return 'ok';
844: }
845: # ----------------------------------------------------- Delete from Environment
846:
847: sub delenv {
848: my ($delthis,$regexp,$roles) = @_;
849: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
850: my $refused = 1;
851: if (ref($roles) eq 'ARRAY') {
852: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
853: if (grep(/^\Q$role\E$/,@{$roles})) {
854: $refused = 0;
855: }
856: }
857: if ($refused) {
858: &logthis("<font color=\"blue\">WARNING: ".
859: "Attempt to delete from environment ".$delthis);
860: return 'error';
861: }
862: }
863: my $opened = open(my $env_file,'+<',$env{'user.environment'});
864: if ($opened
865: && &timed_flock($env_file,LOCK_EX)
866: &&
867: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
868: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
869: foreach my $key (keys(%disk_env)) {
870: if ($regexp) {
871: if ($key=~/^$delthis/) {
872: delete($env{$key});
873: delete($disk_env{$key});
874: }
875: } else {
876: if ($key=~/^\Q$delthis\E/) {
877: delete($env{$key});
878: delete($disk_env{$key});
879: }
880: }
881: }
882: untie(%disk_env);
883: }
884: return 'ok';
885: }
886:
887: sub get_env_multiple {
888: my ($name) = @_;
889: my @values;
890: if (defined($env{$name})) {
891: # exists is it an array
892: if (ref($env{$name})) {
893: @values=@{ $env{$name} };
894: } else {
895: $values[0]=$env{$name};
896: }
897: }
898: return(@values);
899: }
900:
901: # ------------------------------------------------------------------- Locking
902:
903: sub set_lock {
904: my ($text)=@_;
905: $locknum++;
906: my $id=$$.'-'.$locknum;
907: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
908: 'session.lock.'.$id => $text});
909: return $id;
910: }
911:
912: sub get_locks {
913: my $num=0;
914: my %texts=();
915: foreach my $lock (split(/\,/,$env{'session.locks'})) {
916: if ($lock=~/\w/) {
917: $num++;
918: $texts{$lock}=$env{'session.lock.'.$lock};
919: }
920: }
921: return ($num,%texts);
922: }
923:
924: sub remove_lock {
925: my ($id)=@_;
926: my $newlocks='';
927: foreach my $lock (split(/\,/,$env{'session.locks'})) {
928: if (($lock=~/\w/) && ($lock ne $id)) {
929: $newlocks.=','.$lock;
930: }
931: }
932: &appenv({'session.locks' => $newlocks});
933: &delenv('session.lock.'.$id);
934: }
935:
936: sub remove_all_locks {
937: my $activelocks=$env{'session.locks'};
938: foreach my $lock (split(/\,/,$env{'session.locks'})) {
939: if ($lock=~/\w/) {
940: &remove_lock($lock);
941: }
942: }
943: }
944:
945:
946: # ------------------------------------------ Find out current server userload
947: sub userload {
948: my $numusers=0;
949: {
950: opendir(LONIDS,$perlvar{'lonIDsDir'});
951: my $filename;
952: my $curtime=time;
953: while ($filename=readdir(LONIDS)) {
954: next if ($filename eq '.' || $filename eq '..');
955: next if ($filename =~ /publicuser_\d+\.id/);
956: next if ($filename =~ /^[a-f0-9]+_linked\.id$/);
957: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
958: if ($curtime-$mtime < 1800) { $numusers++; }
959: }
960: closedir(LONIDS);
961: }
962: my $userloadpercent=0;
963: my $maxuserload=$perlvar{'lonUserLoadLim'};
964: if ($maxuserload) {
965: $userloadpercent=100*$numusers/$maxuserload;
966: }
967: $userloadpercent=sprintf("%.2f",$userloadpercent);
968: return $userloadpercent;
969: }
970:
971: # ------------------------------ Find server with least workload from spare.tab
972:
973: sub spareserver {
974: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
975: my $spare_server;
976: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
977: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
978: : $userloadpercent;
979: my ($uint_dom,$remotesessions);
980: if (($udom ne '') && (&domain($udom) ne '')) {
981: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
982: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
983: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
984: $remotesessions = $udomdefaults{'remotesessions'};
985: }
986: my $spareshash = &this_host_spares($udom);
987: if (ref($spareshash) eq 'HASH') {
988: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
989: foreach my $try_server (@{ $spareshash->{'primary'} }) {
990: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
991: $try_server));
992: ($spare_server, $lowest_load) =
993: &compare_server_load($try_server, $spare_server, $lowest_load);
994: }
995: }
996:
997: my $found_server = ($spare_server ne '' && $lowest_load < 100);
998:
999: if (!$found_server) {
1000: if (ref($spareshash->{'default'}) eq 'ARRAY') {
1001: foreach my $try_server (@{ $spareshash->{'default'} }) {
1002: next unless (&spare_can_host($udom,$uint_dom,
1003: $remotesessions,$try_server));
1004: ($spare_server, $lowest_load) =
1005: &compare_server_load($try_server, $spare_server, $lowest_load);
1006: }
1007: }
1008: }
1009: }
1010:
1011: if (!$want_server_name) {
1012: if (defined($spare_server)) {
1013: my $hostname = &hostname($spare_server);
1014: if (defined($hostname)) {
1015: my $protocol = 'http';
1016: if ($protocol{$spare_server} eq 'https') {
1017: $protocol = $protocol{$spare_server};
1018: }
1019: $spare_server = $protocol.'://'.$hostname;
1020: }
1021: }
1022: }
1023: return $spare_server;
1024: }
1025:
1026: sub compare_server_load {
1027: my ($try_server, $spare_server, $lowest_load, $required) = @_;
1028:
1029: if ($required) {
1030: my ($reqdmajor,$reqdminor) = ($required =~ /^(\d+)\.(\d+)$/);
1031: my $remoterev = &get_server_loncaparev(undef,$try_server);
1032: my ($major,$minor) = ($remoterev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
1033: if (($major eq '' && $minor eq '') ||
1034: (($reqdmajor > $major) || (($reqdmajor == $major) && ($reqdminor > $minor)))) {
1035: return ($spare_server,$lowest_load);
1036: }
1037: }
1038:
1039: my $loadans = &reply('load', $try_server);
1040: my $userloadans = &reply('userload',$try_server);
1041:
1042: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
1043: return ($spare_server, $lowest_load); #didn't get a number from the server
1044: }
1045:
1046: my $load;
1047: if ($loadans =~ /\d/) {
1048: if ($userloadans =~ /\d/) {
1049: #both are numbers, pick the bigger one
1050: $load = ($loadans > $userloadans) ? $loadans
1051: : $userloadans;
1052: } else {
1053: $load = $loadans;
1054: }
1055: } else {
1056: $load = $userloadans;
1057: }
1058:
1059: if (($load =~ /\d/) && ($load < $lowest_load)) {
1060: $spare_server = $try_server;
1061: $lowest_load = $load;
1062: }
1063: return ($spare_server,$lowest_load);
1064: }
1065:
1066: # --------------------------- ask offload servers if user already has a session
1067: sub find_existing_session {
1068: my ($udom,$uname) = @_;
1069: my $spareshash = &this_host_spares($udom);
1070: if (ref($spareshash) eq 'HASH') {
1071: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
1072: foreach my $try_server (@{ $spareshash->{'primary'} }) {
1073: return $try_server if (&has_user_session($try_server, $udom, $uname));
1074: }
1075: }
1076: if (ref($spareshash->{'default'}) eq 'ARRAY') {
1077: foreach my $try_server (@{ $spareshash->{'default'} }) {
1078: return $try_server if (&has_user_session($try_server, $udom, $uname));
1079: }
1080: }
1081: }
1082: return;
1083: }
1084:
1085: sub delusersession {
1086: my ($lonid,$udom,$uname) = @_;
1087: my $uprimary_id = &domain($udom,'primary');
1088: my $uintdom = &internet_dom($uprimary_id);
1089: my $intdom = &internet_dom($lonid);
1090: my $serverhomedom = &host_domain($lonid);
1091: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1092: return &reply(join(':','delusersession',
1093: map {&escape($_)} ($udom,$uname)),$lonid);
1094: }
1095: return;
1096: }
1097:
1098: # check if user's browser sent load balancer cookie and server still has session
1099: # and is not overloaded.
1100: sub check_for_balancer_cookie {
1101: my ($r,$update_mtime) = @_;
1102: my ($otherserver,$cookie);
1103: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
1104: if (exists($cookies{'balanceID'})) {
1105: my $balid = $cookies{'balanceID'};
1106: $cookie=&LONCAPA::clean_handle($balid->value);
1107: my $balancedir=$r->dir_config('lonBalanceDir');
1108: if ((-d $balancedir) && (-e "$balancedir/$cookie.id")) {
1109: if ($cookie =~ /^($match_domain)_($match_username)_[a-f0-9]+$/) {
1110: my ($possudom,$possuname) = ($1,$2);
1111: my $has_session = 0;
1112: if ((&domain($possudom) ne '') &&
1113: (&homeserver($possuname,$possudom) ne 'no_host')) {
1114: my $try_server;
1115: my $opened = open(my $idf,'+<',"$balancedir/$cookie.id");
1116: if ($opened) {
1117: flock($idf,LOCK_SH);
1118: while (my $line = <$idf>) {
1119: chomp($line);
1120: if (&hostname($line) ne '') {
1121: $try_server = $line;
1122: last;
1123: }
1124: }
1125: close($idf);
1126: if (($try_server) &&
1127: (&has_user_session($try_server,$possudom,$possuname))) {
1128: my $lowest_load = 30000;
1129: ($otherserver,$lowest_load) =
1130: &compare_server_load($try_server,undef,$lowest_load);
1131: if ($otherserver ne '' && $lowest_load < 100) {
1132: $has_session = 1;
1133: } else {
1134: undef($otherserver);
1135: }
1136: }
1137: }
1138: }
1139: if ($has_session) {
1140: if ($update_mtime) {
1141: my $atime = my $mtime = time;
1142: utime($atime,$mtime,"$balancedir/$cookie.id");
1143: }
1144: } else {
1145: unlink("$balancedir/$cookie.id");
1146: }
1147: }
1148: }
1149: }
1150: return ($otherserver,$cookie);
1151: }
1152:
1153: sub delbalcookie {
1154: my ($cookie,$balancer) =@_;
1155: if ($cookie =~ /^($match_domain)\_($match_username)\_[a-f0-9]{32}$/) {
1156: my ($udom,$uname) = ($1,$2);
1157: my $uprimary_id = &domain($udom,'primary');
1158: my $uintdom = &internet_dom($uprimary_id);
1159: my $intdom = &internet_dom($balancer);
1160: my $serverhomedom = &host_domain($balancer);
1161: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1162: return &reply("delbalcookie:$cookie",$balancer);
1163: }
1164: }
1165: }
1166:
1167: # -------------------------------- ask if server already has a session for user
1168: sub has_user_session {
1169: my ($lonid,$udom,$uname) = @_;
1170: my $result = &reply(join(':','userhassession',
1171: map {&escape($_)} ($udom,$uname)),$lonid);
1172: return 1 if ($result eq 'ok');
1173:
1174: return 0;
1175: }
1176:
1177: # --------- determine least loaded server in a user's domain which allows login
1178:
1179: sub choose_server {
1180: my ($udom,$checkloginvia,$required,$skiploadbal) = @_;
1181: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
1182: my %servers = &get_servers($udom);
1183: my $lowest_load = 30000;
1184: my ($login_host,$hostname,$portal_path,$isredirect,$balancers);
1185: if ($skiploadbal) {
1186: ($balancers,my $cached)=&is_cached_new('loadbalancing',$udom);
1187: unless (defined($cached)) {
1188: my $cachetime = 60*60*24;
1189: my %domconfig =
1190: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1191: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1192: $balancers = &do_cache_new('loadbalancing',$udom,$domconfig{'loadbalancing'},
1193: $cachetime);
1194: }
1195: }
1196: }
1197: foreach my $lonhost (keys(%servers)) {
1198: if ($skiploadbal) {
1199: if (ref($balancers) eq 'HASH') {
1200: next if (exists($balancers->{$lonhost}));
1201: }
1202: }
1203: my $loginvia;
1204: if ($checkloginvia) {
1205: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
1206: if ($loginvia) {
1207: my ($server,$path) = split(/:/,$loginvia);
1208: ($login_host, $lowest_load) =
1209: &compare_server_load($server, $login_host, $lowest_load, $required);
1210: if ($login_host eq $server) {
1211: $portal_path = $path;
1212: $isredirect = 1;
1213: }
1214: } else {
1215: ($login_host, $lowest_load) =
1216: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1217: if ($login_host eq $lonhost) {
1218: $portal_path = '';
1219: $isredirect = '';
1220: }
1221: }
1222: } else {
1223: ($login_host, $lowest_load) =
1224: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1225: }
1226: }
1227: if ($login_host ne '') {
1228: $hostname = &hostname($login_host);
1229: }
1230: return ($login_host,$hostname,$portal_path,$isredirect,$lowest_load);
1231: }
1232:
1233: # --------------------------------------------- Try to change a user's password
1234:
1235: sub changepass {
1236: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
1237: $currentpass = &escape($currentpass);
1238: $newpass = &escape($newpass);
1239: my $lonhost = $perlvar{'lonHostID'};
1240: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
1241: $server);
1242: if (! $answer) {
1243: &logthis("No reply on password change request to $server ".
1244: "by $uname in domain $udom.");
1245: } elsif ($answer =~ "^ok") {
1246: &logthis("$uname in $udom successfully changed their password ".
1247: "on $server.");
1248: } elsif ($answer =~ "^pwchange_failure") {
1249: &logthis("$uname in $udom was unable to change their password ".
1250: "on $server. The action was blocked by either lcpasswd ".
1251: "or pwchange");
1252: } elsif ($answer =~ "^non_authorized") {
1253: &logthis("$uname in $udom did not get their password correct when ".
1254: "attempting to change it on $server.");
1255: } elsif ($answer =~ "^auth_mode_error") {
1256: &logthis("$uname in $udom attempted to change their password despite ".
1257: "not being locally or internally authenticated on $server.");
1258: } elsif ($answer =~ "^unknown_user") {
1259: &logthis("$uname in $udom attempted to change their password ".
1260: "on $server but were unable to because $server is not ".
1261: "their home server.");
1262: } elsif ($answer =~ "^refused") {
1263: &logthis("$server refused to change $uname in $udom password because ".
1264: "it was sent an unencrypted request to change the password.");
1265: } elsif ($answer =~ "invalid_client") {
1266: &logthis("$server refused to change $uname in $udom password because ".
1267: "it was a reset by e-mail originating from an invalid server.");
1268: } elsif ($answer =~ "^prioruse") {
1269: &logthis("$server refused to change $uname in $udom password because ".
1270: "the password had been used before");
1271: }
1272: return $answer;
1273: }
1274:
1275: # ----------------------- Try to determine user's current authentication scheme
1276:
1277: sub queryauthenticate {
1278: my ($uname,$udom)=@_;
1279: my $uhome=&homeserver($uname,$udom);
1280: if (!$uhome) {
1281: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1282: return 'no_host';
1283: }
1284: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1285: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1286: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1287: }
1288: return $answer;
1289: }
1290:
1291: # --------- Try to authenticate user from domain's lib servers (first this one)
1292:
1293: sub authenticate {
1294: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1295: $upass=&escape($upass);
1296: $uname= &LONCAPA::clean_username($uname);
1297: my $uhome=&homeserver($uname,$udom,1);
1298: my $newhome;
1299: if ((!$uhome) || ($uhome eq 'no_host')) {
1300: # Maybe the machine was offline and only re-appeared again recently?
1301: &reconlonc();
1302: # One more
1303: $uhome=&homeserver($uname,$udom,1);
1304: if (($uhome eq 'no_host') && $checkdefauth) {
1305: if (defined(&domain($udom,'primary'))) {
1306: $newhome=&domain($udom,'primary');
1307: }
1308: if ($newhome ne '') {
1309: $uhome = $newhome;
1310: }
1311: }
1312: if ((!$uhome) || ($uhome eq 'no_host')) {
1313: &logthis("User $uname at $udom is unknown in authenticate");
1314: return 'no_host';
1315: }
1316: }
1317: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1318: if ($answer eq 'authorized') {
1319: if ($newhome) {
1320: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1321: return 'no_account_on_host';
1322: } else {
1323: &logthis("User $uname at $udom authorized by $uhome");
1324: return $uhome;
1325: }
1326: }
1327: if ($answer eq 'non_authorized') {
1328: &logthis("User $uname at $udom rejected by $uhome");
1329: return 'no_host';
1330: }
1331: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1332: return 'no_host';
1333: }
1334:
1335: sub can_host_session {
1336: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1337: my $canhost = 1;
1338: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1339: if (ref($remotesessions) eq 'HASH') {
1340: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1341: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1342: $canhost = 0;
1343: } else {
1344: $canhost = 1;
1345: }
1346: }
1347: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1348: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1349: $canhost = 1;
1350: } else {
1351: $canhost = 0;
1352: }
1353: }
1354: if ($canhost) {
1355: if ($remotesessions->{'version'} ne '') {
1356: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1357: if ($reqmajor ne '' && $reqminor ne '') {
1358: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1359: my $major = $1;
1360: my $minor = $2;
1361: if (($major < $reqmajor ) ||
1362: (($major == $reqmajor) && ($minor < $reqminor))) {
1363: $canhost = 0;
1364: }
1365: } else {
1366: $canhost = 0;
1367: }
1368: }
1369: }
1370: }
1371: }
1372: if ($canhost) {
1373: if (ref($hostedsessions) eq 'HASH') {
1374: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1375: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1376: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1377: if (($uint_dom ne '') &&
1378: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1379: $canhost = 0;
1380: } else {
1381: $canhost = 1;
1382: }
1383: }
1384: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1385: if (($uint_dom ne '') &&
1386: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1387: $canhost = 1;
1388: } else {
1389: $canhost = 0;
1390: }
1391: }
1392: }
1393: }
1394: return $canhost;
1395: }
1396:
1397: sub spare_can_host {
1398: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1399: my $canhost=1;
1400: my $try_server_hostname = &hostname($try_server);
1401: my $serverhomeID = &get_server_homeID($try_server_hostname);
1402: my $serverhomedom = &host_domain($serverhomeID);
1403: my %defdomdefaults = &get_domain_defaults($serverhomedom);
1404: if (ref($defdomdefaults{'offloadnow'}) eq 'HASH') {
1405: if ($defdomdefaults{'offloadnow'}{$try_server}) {
1406: $canhost = 0;
1407: }
1408: }
1409: if (($canhost) && ($uint_dom)) {
1410: my @intdoms;
1411: my $internet_names = &get_internet_names($try_server);
1412: if (ref($internet_names) eq 'ARRAY') {
1413: @intdoms = @{$internet_names};
1414: }
1415: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1416: my $remoterev = &get_server_loncaparev(undef,$try_server);
1417: $canhost = &can_host_session($udom,$try_server,$remoterev,
1418: $remotesessions,
1419: $defdomdefaults{'hostedsessions'});
1420: }
1421: }
1422: return $canhost;
1423: }
1424:
1425: sub this_host_spares {
1426: my ($dom) = @_;
1427: my ($dom_in_use,$lonhost_in_use,$result);
1428: my @hosts = ¤t_machine_ids();
1429: foreach my $lonhost (@hosts) {
1430: if (&host_domain($lonhost) eq $dom) {
1431: $dom_in_use = $dom;
1432: $lonhost_in_use = $lonhost;
1433: last;
1434: }
1435: }
1436: if ($dom_in_use ne '') {
1437: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1438: }
1439: if (ref($result) ne 'HASH') {
1440: $lonhost_in_use = $perlvar{'lonHostID'};
1441: $dom_in_use = &host_domain($lonhost_in_use);
1442: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1443: if (ref($result) ne 'HASH') {
1444: $result = \%spareid;
1445: }
1446: }
1447: return $result;
1448: }
1449:
1450: sub spares_for_offload {
1451: my ($dom_in_use,$lonhost_in_use) = @_;
1452: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1453: if (defined($cached)) {
1454: return $result;
1455: } else {
1456: my $cachetime = 60*60*24;
1457: my %domconfig =
1458: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1459: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1460: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1461: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1462: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1463: }
1464: }
1465: }
1466: }
1467: return;
1468: }
1469:
1470: sub get_lonbalancer_config {
1471: my ($servers) = @_;
1472: my ($currbalancer,$currtargets);
1473: if (ref($servers) eq 'HASH') {
1474: foreach my $server (keys(%{$servers})) {
1475: my %what = (
1476: spareid => 1,
1477: perlvar => 1,
1478: );
1479: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1480: if ($result eq 'ok') {
1481: if (ref($returnhash) eq 'HASH') {
1482: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1483: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1484: $currbalancer = $server;
1485: $currtargets = {};
1486: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1487: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1488: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1489: }
1490: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1491: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1492: }
1493: }
1494: last;
1495: }
1496: }
1497: }
1498: }
1499: }
1500: }
1501: return ($currbalancer,$currtargets);
1502: }
1503:
1504: sub check_loadbalancing {
1505: my ($uname,$udom,$caller) = @_;
1506: my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
1507: $rule_in_effect,$offloadto,$otherserver,$setcookie,$dom_balancers);
1508: my $lonhost = $perlvar{'lonHostID'};
1509: my @hosts = ¤t_machine_ids();
1510: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1511: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1512: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1513: my $serverhomedom = &host_domain($lonhost);
1514: my $domneedscache;
1515: my $cachetime = 60*60*24;
1516:
1517: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1518: $dom_in_use = $udom;
1519: $homeintdom = 1;
1520: } else {
1521: $dom_in_use = $serverhomedom;
1522: }
1523: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1524: unless (defined($cached)) {
1525: my %domconfig =
1526: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1527: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1528: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1529: } else {
1530: $domneedscache = $dom_in_use;
1531: }
1532: }
1533: if (ref($result) eq 'HASH') {
1534: ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers) =
1535: &check_balancer_result($result,@hosts);
1536: if ($is_balancer) {
1537: if (ref($currrules) eq 'HASH') {
1538: if ($homeintdom) {
1539: if ($uname ne '') {
1540: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1541: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1542: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1543: $rule_in_effect = $currrules->{'_LC_author'};
1544: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1545: $rule_in_effect = $currrules->{'_LC_adv'}
1546: }
1547: }
1548: if ($rule_in_effect eq '') {
1549: my %userenv = &userenvironment($udom,$uname,'inststatus');
1550: if ($userenv{'inststatus'} ne '') {
1551: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1552: my ($othertitle,$usertypes,$types) =
1553: &Apache::loncommon::sorted_inst_types($udom);
1554: if (ref($types) eq 'ARRAY') {
1555: foreach my $type (@{$types}) {
1556: if (grep(/^\Q$type\E$/,@statuses)) {
1557: if (exists($currrules->{$type})) {
1558: $rule_in_effect = $currrules->{$type};
1559: }
1560: }
1561: }
1562: }
1563: } else {
1564: if (exists($currrules->{'default'})) {
1565: $rule_in_effect = $currrules->{'default'};
1566: }
1567: }
1568: }
1569: } else {
1570: if (exists($currrules->{'default'})) {
1571: $rule_in_effect = $currrules->{'default'};
1572: }
1573: }
1574: } else {
1575: if ($currrules->{'_LC_external'} ne '') {
1576: $rule_in_effect = $currrules->{'_LC_external'};
1577: }
1578: }
1579: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1580: $uname,$udom);
1581: }
1582: }
1583: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1584: ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1585: unless (defined($cached)) {
1586: my %domconfig =
1587: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1588: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1589: $result = &do_cache_new('loadbalancing',$serverhomedom,$domconfig{'loadbalancing'},$cachetime);
1590: } else {
1591: $domneedscache = $serverhomedom;
1592: }
1593: }
1594: if (ref($result) eq 'HASH') {
1595: ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers) =
1596: &check_balancer_result($result,@hosts);
1597: if ($is_balancer) {
1598: if (ref($currrules) eq 'HASH') {
1599: if ($currrules->{'_LC_internetdom'} ne '') {
1600: $rule_in_effect = $currrules->{'_LC_internetdom'};
1601: }
1602: }
1603: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1604: $uname,$udom);
1605: }
1606: } else {
1607: if ($perlvar{'lonBalancer'} eq 'yes') {
1608: $is_balancer = 1;
1609: $offloadto = &this_host_spares($dom_in_use);
1610: }
1611: unless (defined($cached)) {
1612: $domneedscache = $serverhomedom;
1613: }
1614: }
1615: } else {
1616: if ($perlvar{'lonBalancer'} eq 'yes') {
1617: $is_balancer = 1;
1618: $offloadto = &this_host_spares($dom_in_use);
1619: }
1620: unless (defined($cached)) {
1621: $domneedscache = $serverhomedom;
1622: }
1623: }
1624: if ($domneedscache) {
1625: &do_cache_new('loadbalancing',$domneedscache,$is_balancer,$cachetime);
1626: }
1627: if ($is_balancer) {
1628: my $lowest_load = 30000;
1629: if (ref($offloadto) eq 'HASH') {
1630: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1631: foreach my $try_server (@{$offloadto->{'primary'}}) {
1632: ($otherserver,$lowest_load) =
1633: &compare_server_load($try_server,$otherserver,$lowest_load);
1634: }
1635: }
1636: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1637:
1638: if (!$found_server) {
1639: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1640: foreach my $try_server (@{$offloadto->{'default'}}) {
1641: ($otherserver,$lowest_load) =
1642: &compare_server_load($try_server,$otherserver,$lowest_load);
1643: }
1644: }
1645: }
1646: } elsif (ref($offloadto) eq 'ARRAY') {
1647: if (@{$offloadto} == 1) {
1648: $otherserver = $offloadto->[0];
1649: } elsif (@{$offloadto} > 1) {
1650: foreach my $try_server (@{$offloadto}) {
1651: ($otherserver,$lowest_load) =
1652: &compare_server_load($try_server,$otherserver,$lowest_load);
1653: }
1654: }
1655: }
1656: unless ($caller eq 'login') {
1657: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1658: $is_balancer = 0;
1659: if ($uname ne '' && $udom ne '') {
1660: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1661: &appenv({'user.loadbalexempt' => $lonhost,
1662: 'user.loadbalcheck.time' => time});
1663: }
1664: }
1665: }
1666: }
1667: unless ($homeintdom) {
1668: undef($setcookie);
1669: }
1670: }
1671: return ($is_balancer,$otherserver,$setcookie,$offloadto,$dom_balancers);
1672: }
1673:
1674: sub check_balancer_result {
1675: my ($result,@hosts) = @_;
1676: my ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers);
1677: if (ref($result) eq 'HASH') {
1678: if ($result->{'lonhost'} ne '') {
1679: my $currbalancer = $result->{'lonhost'};
1680: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1681: $is_balancer = 1;
1682: $currtargets = $result->{'targets'};
1683: $currrules = $result->{'rules'};
1684: }
1685: $dom_balancers = $currbalancer;
1686: } else {
1687: if (keys(%{$result})) {
1688: foreach my $key (keys(%{$result})) {
1689: if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&
1690: (ref($result->{$key}) eq 'HASH')) {
1691: $is_balancer = 1;
1692: $currrules = $result->{$key}{'rules'};
1693: $currtargets = $result->{$key}{'targets'};
1694: $setcookie = $result->{$key}{'cookie'};
1695: last;
1696: }
1697: }
1698: $dom_balancers = join(',',sort(keys(%{$result})));
1699: }
1700: }
1701: }
1702: return ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers);
1703: }
1704:
1705: sub get_loadbalancer_targets {
1706: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1707: my $offloadto;
1708: if ($rule_in_effect eq 'none') {
1709: return [$perlvar{'lonHostID'}];
1710: } elsif ($rule_in_effect eq '') {
1711: $offloadto = $currtargets;
1712: } else {
1713: if ($rule_in_effect eq 'homeserver') {
1714: my $homeserver = &homeserver($uname,$udom);
1715: if ($homeserver ne 'no_host') {
1716: $offloadto = [$homeserver];
1717: }
1718: } elsif ($rule_in_effect eq 'externalbalancer') {
1719: my %domconfig =
1720: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1721: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1722: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1723: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1724: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1725: }
1726: }
1727: } else {
1728: my %servers = &internet_dom_servers($udom);
1729: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1730: if (&hostname($remotebalancer) ne '') {
1731: $offloadto = [$remotebalancer];
1732: }
1733: }
1734: } elsif (&hostname($rule_in_effect) ne '') {
1735: $offloadto = [$rule_in_effect];
1736: }
1737: }
1738: return $offloadto;
1739: }
1740:
1741: sub internet_dom_servers {
1742: my ($dom) = @_;
1743: my (%uniqservers,%servers);
1744: my $primaryserver = &hostname(&domain($dom,'primary'));
1745: my @machinedoms = &machine_domains($primaryserver);
1746: foreach my $mdom (@machinedoms) {
1747: my %currservers = %servers;
1748: my %server = &get_servers($mdom);
1749: %servers = (%currservers,%server);
1750: }
1751: my %by_hostname;
1752: foreach my $id (keys(%servers)) {
1753: push(@{$by_hostname{$servers{$id}}},$id);
1754: }
1755: foreach my $hostname (sort(keys(%by_hostname))) {
1756: if (@{$by_hostname{$hostname}} > 1) {
1757: my $match = 0;
1758: foreach my $id (@{$by_hostname{$hostname}}) {
1759: if (&host_domain($id) eq $dom) {
1760: $uniqservers{$id} = $hostname;
1761: $match = 1;
1762: }
1763: }
1764: unless ($match) {
1765: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1766: }
1767: } else {
1768: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1769: }
1770: }
1771: return %uniqservers;
1772: }
1773:
1774: sub trusted_domains {
1775: my ($cmdtype,$calldom) = @_;
1776: my ($trusted,$untrusted);
1777: if (&domain($calldom) eq '') {
1778: return ($trusted,$untrusted);
1779: }
1780: unless ($cmdtype =~ /^(content|shared|enroll|coaurem|othcoau|domroles|catalog|reqcrs|msg)$/) {
1781: return ($trusted,$untrusted);
1782: }
1783: my $callprimary = &domain($calldom,'primary');
1784: my $intcalldom = &Apache::lonnet::internet_dom($callprimary);
1785: if ($intcalldom eq '') {
1786: return ($trusted,$untrusted);
1787: }
1788:
1789: my ($trustconfig,$cached)=&Apache::lonnet::is_cached_new('trust',$calldom);
1790: unless (defined($cached)) {
1791: my %domconfig = &Apache::lonnet::get_dom('configuration',['trust'],$calldom);
1792: &Apache::lonnet::do_cache_new('trust',$calldom,$domconfig{'trust'},3600);
1793: $trustconfig = $domconfig{'trust'};
1794: }
1795: if (ref($trustconfig)) {
1796: my (%possexc,%possinc,@allexc,@allinc);
1797: if (ref($trustconfig->{$cmdtype}) eq 'HASH') {
1798: if (ref($trustconfig->{$cmdtype}->{'exc'}) eq 'ARRAY') {
1799: map { $possexc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'exc'}};
1800: }
1801: if (ref($trustconfig->{$cmdtype}->{'inc'}) eq 'ARRAY') {
1802: $possinc{$intcalldom} = 1;
1803: map { $possinc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'inc'}};
1804: }
1805: }
1806: if (keys(%possexc)) {
1807: if (keys(%possinc)) {
1808: foreach my $key (sort(keys(%possexc))) {
1809: next if ($key eq $intcalldom);
1810: unless ($possinc{$key}) {
1811: push(@allexc,$key);
1812: }
1813: }
1814: } else {
1815: @allexc = sort(keys(%possexc));
1816: }
1817: }
1818: if (keys(%possinc)) {
1819: $possinc{$intcalldom} = 1;
1820: @allinc = sort(keys(%possinc));
1821: }
1822: if ((@allexc > 0) || (@allinc > 0)) {
1823: my %doms_by_intdom;
1824: my %allintdoms = &all_host_intdom();
1825: my %alldoms = &all_host_domain();
1826: foreach my $key (%allintdoms) {
1827: if (ref($doms_by_intdom{$allintdoms{$key}}) eq 'ARRAY') {
1828: unless (grep(/^\Q$alldoms{$key}\E$/,@{$doms_by_intdom{$allintdoms{$key}}})) {
1829: push(@{$doms_by_intdom{$allintdoms{$key}}},$alldoms{$key});
1830: }
1831: } else {
1832: $doms_by_intdom{$allintdoms{$key}} = [$alldoms{$key}];
1833: }
1834: }
1835: foreach my $exc (@allexc) {
1836: if (ref($doms_by_intdom{$exc}) eq 'ARRAY') {
1837: push(@{$untrusted},@{$doms_by_intdom{$exc}});
1838: }
1839: }
1840: foreach my $inc (@allinc) {
1841: if (ref($doms_by_intdom{$inc}) eq 'ARRAY') {
1842: push(@{$trusted},@{$doms_by_intdom{$inc}});
1843: }
1844: }
1845: }
1846: }
1847: return ($trusted,$untrusted);
1848: }
1849:
1850: sub will_trust {
1851: my ($cmdtype,$domain,$possdom) = @_;
1852: return 1 if ($domain eq $possdom);
1853: my ($trustedref,$untrustedref) = &trusted_domains($cmdtype,$possdom);
1854: my $willtrust;
1855: if ((ref($trustedref) eq 'ARRAY') && (@{$trustedref} > 0)) {
1856: if (grep(/^\Q$domain\E$/,@{$trustedref})) {
1857: $willtrust = 1;
1858: }
1859: } elsif ((ref($untrustedref) eq 'ARRAY') && (@{$untrustedref} > 0)) {
1860: unless (grep(/^\Q$domain\E$/,@{$untrustedref})) {
1861: $willtrust = 1;
1862: }
1863: } else {
1864: $willtrust = 1;
1865: }
1866: return $willtrust;
1867: }
1868:
1869: # ---------------------- Find the homebase for a user from domain's lib servers
1870:
1871: my %homecache;
1872: sub homeserver {
1873: my ($uname,$udom,$ignoreBadCache)=@_;
1874: my $index="$uname:$udom";
1875:
1876: if (exists($homecache{$index})) { return $homecache{$index}; }
1877:
1878: my %servers = &get_servers($udom,'library');
1879: foreach my $tryserver (keys(%servers)) {
1880: next if ($ignoreBadCache ne 'true' &&
1881: exists($badServerCache{$tryserver}));
1882:
1883: my $answer=reply("home:$udom:$uname",$tryserver);
1884: if ($answer eq 'found') {
1885: delete($badServerCache{$tryserver});
1886: return $homecache{$index}=$tryserver;
1887: } elsif ($answer eq 'no_host') {
1888: $badServerCache{$tryserver}=1;
1889: }
1890: }
1891: return 'no_host';
1892: }
1893:
1894: # ----- Find the usernames behind a list of student/employee IDs or clicker IDs
1895:
1896: sub idget {
1897: my ($udom,$idsref,$namespace)=@_;
1898: my %returnhash=();
1899: my @ids=();
1900: if (ref($idsref) eq 'ARRAY') {
1901: @ids = @{$idsref};
1902: } else {
1903: return %returnhash;
1904: }
1905: if ($namespace eq '') {
1906: $namespace = 'ids';
1907: }
1908:
1909: my %servers = &get_servers($udom,'library');
1910: foreach my $tryserver (keys(%servers)) {
1911: my $idlist=join('&', map { &escape($_); } @ids);
1912: if ($namespace eq 'ids') {
1913: $idlist=~tr/A-Z/a-z/;
1914: }
1915: my $reply;
1916: if ($namespace eq 'ids') {
1917: $reply=&reply("idget:$udom:".$idlist,$tryserver);
1918: } else {
1919: $reply=&reply("getdom:$udom:$namespace:$idlist",$tryserver);
1920: }
1921: my @answer=();
1922: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1923: @answer=split(/\&/,$reply);
1924: } ;
1925: my $i;
1926: for ($i=0;$i<=$#ids;$i++) {
1927: if ($answer[$i]) {
1928: $returnhash{$ids[$i]}=&unescape($answer[$i]);
1929: }
1930: }
1931: }
1932: return %returnhash;
1933: }
1934:
1935: # ------------------------------------- Find the IDs behind a list of usernames
1936:
1937: sub idrget {
1938: my ($udom,@unames)=@_;
1939: my %returnhash=();
1940: foreach my $uname (@unames) {
1941: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1942: }
1943: return %returnhash;
1944: }
1945:
1946: # Store away a list of names and associated student/employee IDs or clicker IDs
1947:
1948: sub idput {
1949: my ($udom,$idsref,$uhom,$namespace)=@_;
1950: my %servers=();
1951: my %ids=();
1952: my %byid = ();
1953: if (ref($idsref) eq 'HASH') {
1954: %ids=%{$idsref};
1955: }
1956: if ($namespace eq '') {
1957: $namespace = 'ids';
1958: }
1959: foreach my $uname (keys(%ids)) {
1960: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1961: if ($uhom eq '') {
1962: $uhom=&homeserver($uname,$udom);
1963: }
1964: if ($uhom ne 'no_host') {
1965: my $esc_unam=&escape($uname);
1966: if ($namespace eq 'ids') {
1967: my $id=&escape($ids{$uname});
1968: $id=~tr/A-Z/a-z/;
1969: my $esc_unam=&escape($uname);
1970: $servers{$uhom}.=$id.'='.$esc_unam.'&';
1971: } else {
1972: my @currids = split(/,/,$ids{$uname});
1973: foreach my $id (@currids) {
1974: $byid{$uhom}{$id} .= $uname.',';
1975: }
1976: }
1977: }
1978: }
1979: if ($namespace eq 'clickers') {
1980: foreach my $server (keys(%byid)) {
1981: if (ref($byid{$server}) eq 'HASH') {
1982: foreach my $id (keys(%{$byid{$server}})) {
1983: $byid{$server} =~ s/,$//;
1984: $servers{$uhom}.=&escape($id).'='.&escape($byid{$server}).'&';
1985: }
1986: }
1987: }
1988: }
1989: foreach my $server (keys(%servers)) {
1990: $servers{$server} =~ s/\&$//;
1991: if ($namespace eq 'ids') {
1992: &critical('idput:'.$udom.':'.$servers{$server},$server);
1993: } else {
1994: &critical('updateclickers:'.$udom.':add:'.$servers{$server},$server);
1995: }
1996: }
1997: }
1998:
1999: # ------------- Delete unwanted student/employee IDs or clicker IDs from domain
2000:
2001: sub iddel {
2002: my ($udom,$idshashref,$uhome,$namespace)=@_;
2003: my %result=();
2004: my %ids=();
2005: my %byid = ();
2006: if (ref($idshashref) eq 'HASH') {
2007: %ids=%{$idshashref};
2008: } else {
2009: return %result;
2010: }
2011: if ($namespace eq '') {
2012: $namespace = 'ids';
2013: }
2014: my %servers=();
2015: while (my ($id,$unamestr) = each(%ids)) {
2016: if ($namespace eq 'ids') {
2017: my $uhom = $uhome;
2018: if ($uhom eq '') {
2019: $uhom=&homeserver($unamestr,$udom);
2020: }
2021: if ($uhom ne 'no_host') {
2022: $servers{$uhom}.='&'.&escape($id);
2023: }
2024: } else {
2025: my @curritems = split(/,/,$ids{$id});
2026: foreach my $uname (@curritems) {
2027: my $uhom = $uhome;
2028: if ($uhom eq '') {
2029: $uhom=&homeserver($uname,$udom);
2030: }
2031: if ($uhom ne 'no_host') {
2032: $byid{$uhom}{$id} .= $uname.',';
2033: }
2034: }
2035: }
2036: }
2037: if ($namespace eq 'clickers') {
2038: foreach my $server (keys(%byid)) {
2039: if (ref($byid{$server}) eq 'HASH') {
2040: foreach my $id (keys(%{$byid{$server}})) {
2041: $byid{$server}{$id} =~ s/,$//;
2042: $servers{$server}.=&escape($id).'='.&escape($byid{$server}{$id}).'&';
2043: }
2044: }
2045: }
2046: }
2047: foreach my $server (keys(%servers)) {
2048: $servers{$server} =~ s/\&$//;
2049: if ($namespace eq 'ids') {
2050: $result{$server} = &critical('iddel:'.$udom.':'.$servers{$server},$uhome);
2051: } elsif ($namespace eq 'clickers') {
2052: $result{$server} = &critical('updateclickers:'.$udom.':del:'.$servers{$server},$server);
2053: }
2054: }
2055: return %result;
2056: }
2057:
2058: # ----- Update clicker ID-to-username look-ups in clickers.db on library server
2059:
2060: sub updateclickers {
2061: my ($udom,$action,$idshashref,$uhome,$critical) = @_;
2062: my %clickers;
2063: if (ref($idshashref) eq 'HASH') {
2064: %clickers=%{$idshashref};
2065: } else {
2066: return;
2067: }
2068: my $items='';
2069: foreach my $item (keys(%clickers)) {
2070: $items.=&escape($item).'='.&escape($clickers{$item}).'&';
2071: }
2072: $items=~s/\&$//;
2073: my $request = "updateclickers:$udom:$action:$items";
2074: if ($critical) {
2075: return &critical($request,$uhome);
2076: } else {
2077: return &reply($request,$uhome);
2078: }
2079: }
2080:
2081: # ------------------------------dump from db file owned by domainconfig user
2082: sub dump_dom {
2083: my ($namespace, $udom, $regexp) = @_;
2084:
2085: $udom ||= $env{'user.domain'};
2086:
2087: return () unless $udom;
2088:
2089: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
2090: }
2091:
2092: # ------------------------------------------ get items from domain db files
2093:
2094: sub get_dom {
2095: my ($namespace,$storearr,$udom,$uhome)=@_;
2096: return if ($udom eq 'public');
2097: my $items='';
2098: foreach my $item (@$storearr) {
2099: $items.=&escape($item).'&';
2100: }
2101: $items=~s/\&$//;
2102: if (!$udom) {
2103: $udom=$env{'user.domain'};
2104: return if ($udom eq 'public');
2105: if (defined(&domain($udom,'primary'))) {
2106: $uhome=&domain($udom,'primary');
2107: } else {
2108: undef($uhome);
2109: }
2110: } else {
2111: if (!$uhome) {
2112: if (defined(&domain($udom,'primary'))) {
2113: $uhome=&domain($udom,'primary');
2114: }
2115: }
2116: }
2117: if ($udom && $uhome && ($uhome ne 'no_host')) {
2118: my $rep;
2119: if ($namespace =~ /^enc/) {
2120: $rep=&reply("encrypt:egetdom:$udom:$namespace:$items",$uhome);
2121: } else {
2122: $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
2123: }
2124: my %returnhash;
2125: if ($rep eq '' || $rep =~ /^error: 2 /) {
2126: return %returnhash;
2127: }
2128: my @pairs=split(/\&/,$rep);
2129: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
2130: return @pairs;
2131: }
2132: my $i=0;
2133: foreach my $item (@$storearr) {
2134: $returnhash{$item}=&thaw_unescape($pairs[$i]);
2135: $i++;
2136: }
2137: return %returnhash;
2138: } else {
2139: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
2140: }
2141: }
2142:
2143: # -------------------------------------------- put items in domain db files
2144:
2145: sub put_dom {
2146: my ($namespace,$storehash,$udom,$uhome)=@_;
2147: if (!$udom) {
2148: $udom=$env{'user.domain'};
2149: if (defined(&domain($udom,'primary'))) {
2150: $uhome=&domain($udom,'primary');
2151: } else {
2152: undef($uhome);
2153: }
2154: } else {
2155: if (!$uhome) {
2156: if (defined(&domain($udom,'primary'))) {
2157: $uhome=&domain($udom,'primary');
2158: }
2159: }
2160: }
2161: if ($udom && $uhome && ($uhome ne 'no_host')) {
2162: my $items='';
2163: foreach my $item (keys(%$storehash)) {
2164: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
2165: }
2166: $items=~s/\&$//;
2167: if ($namespace =~ /^enc/) {
2168: return &reply("encrypt:putdom:$udom:$namespace:$items",$uhome);
2169: } else {
2170: return &reply("putdom:$udom:$namespace:$items",$uhome);
2171: }
2172: } else {
2173: &logthis("put_dom failed - no homeserver and/or domain");
2174: }
2175: }
2176:
2177: # --------------------- newput for items in db file owned by domainconfig user
2178: sub newput_dom {
2179: my ($namespace,$storehash,$udom) = @_;
2180: my $result;
2181: if (!$udom) {
2182: $udom=$env{'user.domain'};
2183: }
2184: if ($udom) {
2185: my $uname = &get_domainconfiguser($udom);
2186: $result = &newput($namespace,$storehash,$udom,$uname);
2187: }
2188: return $result;
2189: }
2190:
2191: # --------------------- delete for items in db file owned by domainconfig user
2192: sub del_dom {
2193: my ($namespace,$storearr,$udom)=@_;
2194: if (ref($storearr) eq 'ARRAY') {
2195: if (!$udom) {
2196: $udom=$env{'user.domain'};
2197: }
2198: if ($udom) {
2199: my $uname = &get_domainconfiguser($udom);
2200: return &del($namespace,$storearr,$udom,$uname);
2201: }
2202: }
2203: }
2204:
2205: # ----------------------------------construct domainconfig user for a domain
2206: sub get_domainconfiguser {
2207: my ($udom) = @_;
2208: return $udom.'-domainconfig';
2209: }
2210:
2211: sub retrieve_inst_usertypes {
2212: my ($udom) = @_;
2213: my (%returnhash,@order);
2214: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
2215: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
2216: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
2217: return ($domdefs{'inststatustypes'},$domdefs{'inststatusorder'});
2218: } else {
2219: if (defined(&domain($udom,'primary'))) {
2220: my $uhome=&domain($udom,'primary');
2221: my $rep=&reply("inst_usertypes:$udom",$uhome);
2222: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
2223: &logthis("retrieve_inst_usertypes failed - $rep returned from $uhome in domain: $udom");
2224: return (\%returnhash,\@order);
2225: }
2226: my ($hashitems,$orderitems) = split(/:/,$rep);
2227: my @pairs=split(/\&/,$hashitems);
2228: foreach my $item (@pairs) {
2229: my ($key,$value)=split(/=/,$item,2);
2230: $key = &unescape($key);
2231: next if ($key =~ /^error: 2 /);
2232: $returnhash{$key}=&thaw_unescape($value);
2233: }
2234: my @esc_order = split(/\&/,$orderitems);
2235: foreach my $item (@esc_order) {
2236: push(@order,&unescape($item));
2237: }
2238: } else {
2239: &logthis("retrieve_inst_usertypes failed - no primary domain server for $udom");
2240: }
2241: return (\%returnhash,\@order);
2242: }
2243: }
2244:
2245: sub is_domainimage {
2246: my ($url) = @_;
2247: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+[^/]-) {
2248: if (&domain($1) ne '') {
2249: return '1';
2250: }
2251: }
2252: return;
2253: }
2254:
2255: sub inst_directory_query {
2256: my ($srch) = @_;
2257: my $udom = $srch->{'srchdomain'};
2258: my %results;
2259: my $homeserver = &domain($udom,'primary');
2260: my $outcome;
2261: if ($homeserver ne '') {
2262: unless ($homeserver eq $perlvar{'lonHostID'}) {
2263: if ($srch->{'srchby'} eq 'email') {
2264: my $lcrev = &get_server_loncaparev(undef,$homeserver);
2265: my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
2266: if (($major eq '' && $minor eq '') || ($major < 2) ||
2267: (($major == 2) && ($minor < 12))) {
2268: return;
2269: }
2270: }
2271: }
2272: my $queryid=&reply("querysend:instdirsearch:".
2273: &escape($srch->{'srchby'}).':'.
2274: &escape($srch->{'srchterm'}).':'.
2275: &escape($srch->{'srchtype'}),$homeserver);
2276: my $host=&hostname($homeserver);
2277: if ($queryid !~/^\Q$host\E\_/) {
2278: &logthis('institutional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.' in domain '.$udom);
2279: return;
2280: }
2281: my $response = &get_query_reply($queryid);
2282: my $maxtries = 5;
2283: my $tries = 1;
2284: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2285: $response = &get_query_reply($queryid);
2286: $tries ++;
2287: }
2288:
2289: if (!&error($response) && $response ne 'refused') {
2290: if ($response eq 'unavailable') {
2291: $outcome = $response;
2292: } else {
2293: $outcome = 'ok';
2294: my @matches = split(/\n/,$response);
2295: foreach my $match (@matches) {
2296: my ($key,$value) = split(/=/,$match);
2297: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
2298: }
2299: }
2300: }
2301: }
2302: return ($outcome,%results);
2303: }
2304:
2305: sub usersearch {
2306: my ($srch) = @_;
2307: my $dom = $srch->{'srchdomain'};
2308: my %results;
2309: my %libserv = &all_library();
2310: my $query = 'usersearch';
2311: foreach my $tryserver (keys(%libserv)) {
2312: if (&host_domain($tryserver) eq $dom) {
2313: unless ($tryserver eq $perlvar{'lonHostID'}) {
2314: if ($srch->{'srchby'} eq 'email') {
2315: my $lcrev = &get_server_loncaparev(undef,$tryserver);
2316: my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
2317: next if (($major eq '' && $minor eq '') || ($major < 2) ||
2318: (($major == 2) && ($minor < 12)));
2319: }
2320: }
2321: my $host=&hostname($tryserver);
2322: my $queryid=
2323: &reply("querysend:".&escape($query).':'.
2324: &escape($srch->{'srchby'}).':'.
2325: &escape($srch->{'srchtype'}).':'.
2326: &escape($srch->{'srchterm'}),$tryserver);
2327: if ($queryid !~/^\Q$host\E\_/) {
2328: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
2329: next;
2330: }
2331: my $reply = &get_query_reply($queryid);
2332: my $maxtries = 1;
2333: my $tries = 1;
2334: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
2335: $reply = &get_query_reply($queryid);
2336: $tries ++;
2337: }
2338: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
2339: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
2340: } else {
2341: my @matches;
2342: if ($reply =~ /\n/) {
2343: @matches = split(/\n/,$reply);
2344: } else {
2345: @matches = split(/\&/,$reply);
2346: }
2347: foreach my $match (@matches) {
2348: my ($uname,$udom,%userhash);
2349: foreach my $entry (split(/:/,$match)) {
2350: my ($key,$value) =
2351: map {&unescape($_);} split(/=/,$entry);
2352: $userhash{$key} = $value;
2353: if ($key eq 'username') {
2354: $uname = $value;
2355: } elsif ($key eq 'domain') {
2356: $udom = $value;
2357: }
2358: }
2359: $results{$uname.':'.$udom} = \%userhash;
2360: }
2361: }
2362: }
2363: }
2364: return %results;
2365: }
2366:
2367: sub get_instuser {
2368: my ($udom,$uname,$id) = @_;
2369: my $homeserver = &domain($udom,'primary');
2370: my ($outcome,%results);
2371: if ($homeserver ne '') {
2372: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
2373: &escape($id).':'.&escape($udom),$homeserver);
2374: my $host=&hostname($homeserver);
2375: if ($queryid !~/^\Q$host\E\_/) {
2376: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
2377: return;
2378: }
2379: my $response = &get_query_reply($queryid);
2380: my $maxtries = 5;
2381: my $tries = 1;
2382: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2383: $response = &get_query_reply($queryid);
2384: $tries ++;
2385: }
2386: if (!&error($response) && $response ne 'refused') {
2387: if ($response eq 'unavailable') {
2388: $outcome = $response;
2389: } else {
2390: $outcome = 'ok';
2391: my @matches = split(/\n/,$response);
2392: foreach my $match (@matches) {
2393: my ($key,$value) = split(/=/,$match);
2394: $results{&unescape($key)} = &thaw_unescape($value);
2395: }
2396: }
2397: }
2398: }
2399: my %userinfo;
2400: if (ref($results{$uname}) eq 'HASH') {
2401: %userinfo = %{$results{$uname}};
2402: }
2403: return ($outcome,%userinfo);
2404: }
2405:
2406: sub get_multiple_instusers {
2407: my ($udom,$users,$caller) = @_;
2408: my ($outcome,$results);
2409: if (ref($users) eq 'HASH') {
2410: my $count = keys(%{$users});
2411: my $requested = &freeze_escape($users);
2412: my $homeserver = &domain($udom,'primary');
2413: if ($homeserver ne '') {
2414: my $queryid=&reply('querysend:getmultinstusers:::'.$caller.'='.$requested,$homeserver);
2415: my $host=&hostname($homeserver);
2416: if ($queryid !~/^\Q$host\E\_/) {
2417: &logthis('get_multiple_instusers invalid queryid: '.$queryid.
2418: ' for host: '.$homeserver.'in domain '.$udom);
2419: return ($outcome,$results);
2420: }
2421: my $response = &get_query_reply($queryid);
2422: my $maxtries = 5;
2423: if ($count > 100) {
2424: $maxtries = 1+int($count/20);
2425: }
2426: my $tries = 1;
2427: while (($response=~/^timeout/) && ($tries <= $maxtries)) {
2428: $response = &get_query_reply($queryid);
2429: $tries ++;
2430: }
2431: if ($response eq '') {
2432: $results = {};
2433: foreach my $key (keys(%{$users})) {
2434: my ($uname,$id);
2435: if ($caller eq 'id') {
2436: $id = $key;
2437: } else {
2438: $uname = $key;
2439: }
2440: my ($resp,%info) = &get_instuser($udom,$uname,$id);
2441: $outcome = $resp;
2442: if ($resp eq 'ok') {
2443: %{$results} = (%{$results}, %info);
2444: } else {
2445: last;
2446: }
2447: }
2448: } elsif(!&error($response) && ($response ne 'refused')) {
2449: if (($response eq 'unavailable') || ($response eq 'invalid') || ($response eq 'timeout')) {
2450: $outcome = $response;
2451: } else {
2452: ($outcome,my $userdata) = split(/=/,$response,2);
2453: if ($outcome eq 'ok') {
2454: $results = &thaw_unescape($userdata);
2455: }
2456: }
2457: }
2458: }
2459: }
2460: return ($outcome,$results);
2461: }
2462:
2463: sub inst_rulecheck {
2464: my ($udom,$uname,$id,$item,$rules) = @_;
2465: my %returnhash;
2466: if ($udom ne '') {
2467: if (ref($rules) eq 'ARRAY') {
2468: @{$rules} = map {&escape($_);} (@{$rules});
2469: my $rulestr = join(':',@{$rules});
2470: my $homeserver=&domain($udom,'primary');
2471: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2472: my $response;
2473: if ($item eq 'username') {
2474: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
2475: ':'.&escape($uname).':'.$rulestr,
2476: $homeserver));
2477: } elsif ($item eq 'id') {
2478: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
2479: ':'.&escape($id).':'.$rulestr,
2480: $homeserver));
2481: } elsif ($item eq 'selfcreate') {
2482: $response=&unescape(&reply('instselfcreatecheck:'.
2483: &escape($udom).':'.&escape($uname).
2484: ':'.$rulestr,$homeserver));
2485: }
2486: if ($response ne 'refused') {
2487: my @pairs=split(/\&/,$response);
2488: foreach my $item (@pairs) {
2489: my ($key,$value)=split(/=/,$item,2);
2490: $key = &unescape($key);
2491: next if ($key =~ /^error: 2 /);
2492: $returnhash{$key}=&thaw_unescape($value);
2493: }
2494: }
2495: }
2496: }
2497: }
2498: return %returnhash;
2499: }
2500:
2501: sub inst_userrules {
2502: my ($udom,$check) = @_;
2503: my (%ruleshash,@ruleorder);
2504: if ($udom ne '') {
2505: my $homeserver=&domain($udom,'primary');
2506: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2507: my $response;
2508: if ($check eq 'id') {
2509: $response=&reply('instidrules:'.&escape($udom),
2510: $homeserver);
2511: } elsif ($check eq 'email') {
2512: $response=&reply('instemailrules:'.&escape($udom),
2513: $homeserver);
2514: } else {
2515: $response=&reply('instuserrules:'.&escape($udom),
2516: $homeserver);
2517: }
2518: if (($response ne 'refused') && ($response ne 'error') &&
2519: ($response ne 'unknown_cmd') &&
2520: ($response ne 'no_such_host')) {
2521: my ($hashitems,$orderitems) = split(/:/,$response);
2522: my @pairs=split(/\&/,$hashitems);
2523: foreach my $item (@pairs) {
2524: my ($key,$value)=split(/=/,$item,2);
2525: $key = &unescape($key);
2526: next if ($key =~ /^error: 2 /);
2527: $ruleshash{$key}=&thaw_unescape($value);
2528: }
2529: my @esc_order = split(/\&/,$orderitems);
2530: foreach my $item (@esc_order) {
2531: push(@ruleorder,&unescape($item));
2532: }
2533: }
2534: }
2535: }
2536: return (\%ruleshash,\@ruleorder);
2537: }
2538:
2539: # ------------- Get Authentication, Language and User Tools Defaults for Domain
2540:
2541: sub get_domain_defaults {
2542: my ($domain,$ignore_cache) = @_;
2543: return if (($domain eq '') || ($domain eq 'public'));
2544: my $cachetime = 60*60*24;
2545: unless ($ignore_cache) {
2546: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
2547: if (defined($cached)) {
2548: if (ref($result) eq 'HASH') {
2549: return %{$result};
2550: }
2551: }
2552: }
2553: my %domdefaults;
2554: my %domconfig =
2555: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
2556: 'requestcourses','inststatus',
2557: 'coursedefaults','usersessions',
2558: 'requestauthor','selfenrollment',
2559: 'coursecategories','ssl','autoenroll',
2560: 'trust','helpsettings'],$domain);
2561: my @coursetypes = ('official','unofficial','community','textbook','placement');
2562: if (ref($domconfig{'defaults'}) eq 'HASH') {
2563: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
2564: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
2565: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
2566: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
2567: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
2568: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
2569: $domdefaults{'intauth_cost'} = $domconfig{'defaults'}{'intauth_cost'};
2570: $domdefaults{'intauth_switch'} = $domconfig{'defaults'}{'intauth_switch'};
2571: $domdefaults{'intauth_check'} = $domconfig{'defaults'}{'intauth_check'};
2572: } else {
2573: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
2574: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
2575: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
2576: }
2577: if (ref($domconfig{'quotas'}) eq 'HASH') {
2578: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
2579: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
2580: } else {
2581: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
2582: }
2583: my @usertools = ('aboutme','blog','webdav','portfolio');
2584: foreach my $item (@usertools) {
2585: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
2586: $domdefaults{$item} = $domconfig{'quotas'}{$item};
2587: }
2588: }
2589: if (ref($domconfig{'quotas'}{'authorquota'}) eq 'HASH') {
2590: $domdefaults{'authorquota'} = $domconfig{'quotas'}{'authorquota'};
2591: }
2592: }
2593: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
2594: foreach my $item ('official','unofficial','community','textbook','placement') {
2595: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
2596: }
2597: }
2598: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
2599: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
2600: }
2601: if (ref($domconfig{'inststatus'}) eq 'HASH') {
2602: foreach my $item ('inststatustypes','inststatusorder','inststatusguest') {
2603: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2604: }
2605: }
2606: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2607: $domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
2608: $domdefaults{'usejsme'} = $domconfig{'coursedefaults'}{'usejsme'};
2609: $domdefaults{'uselcmath'} = $domconfig{'coursedefaults'}{'uselcmath'};
2610: if (ref($domconfig{'coursedefaults'}{'postsubmit'}) eq 'HASH') {
2611: $domdefaults{'postsubmit'} = $domconfig{'coursedefaults'}{'postsubmit'}{'client'};
2612: }
2613: foreach my $type (@coursetypes) {
2614: if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
2615: unless ($type eq 'community') {
2616: $domdefaults{$type.'credits'} = $domconfig{'coursedefaults'}{'coursecredits'}{$type};
2617: }
2618: }
2619: if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
2620: $domdefaults{$type.'quota'} = $domconfig{'coursedefaults'}{'uploadquota'}{$type};
2621: }
2622: if ($domdefaults{'postsubmit'} eq 'on') {
2623: if (ref($domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}) eq 'HASH') {
2624: $domdefaults{$type.'postsubtimeout'} =
2625: $domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}{$type};
2626: }
2627: }
2628: }
2629: if (ref($domconfig{'coursedefaults'}{'canclone'}) eq 'HASH') {
2630: if (ref($domconfig{'coursedefaults'}{'canclone'}{'instcode'}) eq 'ARRAY') {
2631: my @clonecodes = @{$domconfig{'coursedefaults'}{'canclone'}{'instcode'}};
2632: if (@clonecodes) {
2633: $domdefaults{'canclone'} = join('+',@clonecodes);
2634: }
2635: }
2636: } elsif ($domconfig{'coursedefaults'}{'canclone'}) {
2637: $domdefaults{'canclone'}=$domconfig{'coursedefaults'}{'canclone'};
2638: }
2639: if ($domconfig{'coursedefaults'}{'texengine'}) {
2640: $domdefaults{'texengine'} = $domconfig{'coursedefaults'}{'texengine'};
2641: }
2642: }
2643: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2644: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2645: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2646: }
2647: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2648: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2649: }
2650: if (ref($domconfig{'usersessions'}{'offloadnow'}) eq 'HASH') {
2651: $domdefaults{'offloadnow'} = $domconfig{'usersessions'}{'offloadnow'};
2652: }
2653: }
2654: if (ref($domconfig{'selfenrollment'}) eq 'HASH') {
2655: if (ref($domconfig{'selfenrollment'}{'admin'}) eq 'HASH') {
2656: my @settings = ('types','registered','enroll_dates','access_dates','section',
2657: 'approval','limit');
2658: foreach my $type (@coursetypes) {
2659: if (ref($domconfig{'selfenrollment'}{'admin'}{$type}) eq 'HASH') {
2660: my @mgrdc = ();
2661: foreach my $item (@settings) {
2662: if ($domconfig{'selfenrollment'}{'admin'}{$type}{$item} eq '0') {
2663: push(@mgrdc,$item);
2664: }
2665: }
2666: if (@mgrdc) {
2667: $domdefaults{$type.'selfenrolladmdc'} = join(',',@mgrdc);
2668: }
2669: }
2670: }
2671: }
2672: if (ref($domconfig{'selfenrollment'}{'default'}) eq 'HASH') {
2673: foreach my $type (@coursetypes) {
2674: if (ref($domconfig{'selfenrollment'}{'default'}{$type}) eq 'HASH') {
2675: foreach my $item (keys(%{$domconfig{'selfenrollment'}{'default'}{$type}})) {
2676: $domdefaults{$type.'selfenroll'.$item} = $domconfig{'selfenrollment'}{'default'}{$type}{$item};
2677: }
2678: }
2679: }
2680: }
2681: }
2682: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
2683: $domdefaults{'catauth'} = 'std';
2684: $domdefaults{'catunauth'} = 'std';
2685: if ($domconfig{'coursecategories'}{'auth'}) {
2686: $domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};
2687: }
2688: if ($domconfig{'coursecategories'}{'unauth'}) {
2689: $domdefaults{'catunauth'} = $domconfig{'coursecategories'}{'unauth'};
2690: }
2691: }
2692: if (ref($domconfig{'ssl'}) eq 'HASH') {
2693: if (ref($domconfig{'ssl'}{'replication'}) eq 'HASH') {
2694: $domdefaults{'replication'} = $domconfig{'ssl'}{'replication'};
2695: }
2696: if (ref($domconfig{'ssl'}{'connto'}) eq 'HASH') {
2697: $domdefaults{'connect'} = $domconfig{'ssl'}{'connto'};
2698: }
2699: if (ref($domconfig{'ssl'}{'connfrom'}) eq 'HASH') {
2700: $domdefaults{'connect'} = $domconfig{'ssl'}{'connfrom'};
2701: }
2702: }
2703: if (ref($domconfig{'trust'}) eq 'HASH') {
2704: my @prefixes = qw(content shared enroll othcoau coaurem domroles catalog reqcrs msg);
2705: foreach my $prefix (@prefixes) {
2706: if (ref($domconfig{'trust'}{$prefix}) eq 'HASH') {
2707: $domdefaults{'trust'.$prefix} = $domconfig{'trust'}{$prefix};
2708: }
2709: }
2710: }
2711: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
2712: $domdefaults{'autofailsafe'} = $domconfig{'autoenroll'}{'autofailsafe'};
2713: }
2714: if (ref($domconfig{'helpsettings'}) eq 'HASH') {
2715: $domdefaults{'submitbugs'} = $domconfig{'helpsettings'}{'submitbugs'};
2716: if (ref($domconfig{'helpsettings'}{'adhoc'}) eq 'HASH') {
2717: $domdefaults{'adhocroles'} = $domconfig{'helpsettings'}{'adhoc'};
2718: }
2719: }
2720: &do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
2721: return %domdefaults;
2722: }
2723:
2724: sub get_dom_cats {
2725: my ($dom) = @_;
2726: return unless (&domain($dom));
2727: my ($cats,$cached)=&is_cached_new('cats',$dom);
2728: unless (defined($cached)) {
2729: my %domconfig = &get_dom('configuration',['coursecategories'],$dom);
2730: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
2731: if (ref($domconfig{'coursecategories'}{'cats'}) eq 'HASH') {
2732: %{$cats} = %{$domconfig{'coursecategories'}{'cats'}};
2733: } else {
2734: $cats = {};
2735: }
2736: } else {
2737: $cats = {};
2738: }
2739: &Apache::lonnet::do_cache_new('cats',$dom,$cats,3600);
2740: }
2741: return $cats;
2742: }
2743:
2744: sub course_portal_url {
2745: my ($cnum,$cdom) = @_;
2746: my $chome = &homeserver($cnum,$cdom);
2747: my $hostname = &hostname($chome);
2748: my $protocol = $protocol{$chome};
2749: $protocol = 'http' if ($protocol ne 'https');
2750: my %domdefaults = &get_domain_defaults($cdom);
2751: my $firsturl;
2752: if ($domdefaults{'portal_def'}) {
2753: $firsturl = $domdefaults{'portal_def'};
2754: } else {
2755: $firsturl = $protocol.'://'.$hostname;
2756: }
2757: return $firsturl;
2758: }
2759:
2760: # --------------------------------------------- Get domain config for passwords
2761:
2762: sub get_passwdconf {
2763: my ($dom) = @_;
2764: my (%passwdconf,$gotconf,$lookup);
2765: my ($result,$cached)=&is_cached_new('passwdconf',$dom);
2766: if (defined($cached)) {
2767: if (ref($result) eq 'HASH') {
2768: %passwdconf = %{$result};
2769: $gotconf = 1;
2770: }
2771: }
2772: unless ($gotconf) {
2773: my %domconfig = &get_dom('configuration',['passwords'],$dom);
2774: if (ref($domconfig{'passwords'}) eq 'HASH') {
2775: %passwdconf = %{$domconfig{'passwords'}};
2776: }
2777: my $cachetime = 24*60*60;
2778: &do_cache_new('passwdconf',$dom,\%passwdconf,$cachetime);
2779: }
2780: return %passwdconf;
2781: }
2782:
2783: # --------------------------------------------------- Assign a key to a student
2784:
2785: sub assign_access_key {
2786: #
2787: # a valid key looks like uname:udom#comments
2788: # comments are being appended
2789: #
2790: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2791: $kdom=
2792: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2793: $knum=
2794: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2795: $cdom=
2796: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2797: $cnum=
2798: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2799: $udom=$env{'user.name'} unless (defined($udom));
2800: $uname=$env{'user.domain'} unless (defined($uname));
2801: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2802: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2803: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2804: # assigned to this person
2805: # - this should not happen,
2806: # unless something went wrong
2807: # the first time around
2808: # ready to assign
2809: $logentry=$1.'; '.$logentry;
2810: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2811: $kdom,$knum) eq 'ok') {
2812: # key now belongs to user
2813: my $envkey='key.'.$cdom.'_'.$cnum;
2814: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2815: &appenv({'environment.'.$envkey => $ckey});
2816: return 'ok';
2817: } else {
2818: return
2819: 'error: Count not permanently assign key, will need to be re-entered later.';
2820: }
2821: } else {
2822: return 'error: Could not assign key, try again later.';
2823: }
2824: } elsif (!$existing{$ckey}) {
2825: # the key does not exist
2826: return 'error: The key does not exist';
2827: } else {
2828: # the key is somebody else's
2829: return 'error: The key is already in use';
2830: }
2831: }
2832:
2833: # ------------------------------------------ put an additional comment on a key
2834:
2835: sub comment_access_key {
2836: #
2837: # a valid key looks like uname:udom#comments
2838: # comments are being appended
2839: #
2840: my ($ckey,$cdom,$cnum,$logentry)=@_;
2841: $cdom=
2842: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2843: $cnum=
2844: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2845: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2846: if ($existing{$ckey}) {
2847: $existing{$ckey}.='; '.$logentry;
2848: # ready to assign
2849: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2850: $cdom,$cnum) eq 'ok') {
2851: return 'ok';
2852: } else {
2853: return 'error: Count not store comment.';
2854: }
2855: } else {
2856: # the key does not exist
2857: return 'error: The key does not exist';
2858: }
2859: }
2860:
2861: # ------------------------------------------------------ Generate a set of keys
2862:
2863: sub generate_access_keys {
2864: my ($number,$cdom,$cnum,$logentry)=@_;
2865: $cdom=
2866: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2867: $cnum=
2868: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2869: unless (&allowed('mky',$cdom)) { return 0; }
2870: unless (($cdom) && ($cnum)) { return 0; }
2871: if ($number>10000) { return 0; }
2872: sleep(2); # make sure don't get same seed twice
2873: srand(time()^($$+($$<<15))); # from "Programming Perl"
2874: my $total=0;
2875: for (my $i=1;$i<=$number;$i++) {
2876: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2877: sprintf("%lx",int(100000*rand)).'-'.
2878: sprintf("%lx",int(100000*rand));
2879: $newkey=~s/1/g/g; # folks mix up 1 and l
2880: $newkey=~s/0/h/g; # and also 0 and O
2881: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2882: if ($existing{$newkey}) {
2883: $i--;
2884: } else {
2885: if (&put('accesskeys',
2886: { $newkey => '# generated '.localtime().
2887: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2888: '; '.$logentry },
2889: $cdom,$cnum) eq 'ok') {
2890: $total++;
2891: }
2892: }
2893: }
2894: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2895: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2896: return $total;
2897: }
2898:
2899: # ------------------------------------------------------- Validate an accesskey
2900:
2901: sub validate_access_key {
2902: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2903: $cdom=
2904: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2905: $cnum=
2906: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2907: $udom=$env{'user.domain'} unless (defined($udom));
2908: $uname=$env{'user.name'} unless (defined($uname));
2909: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2910: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2911: }
2912:
2913: # ------------------------------------- Find the section of student in a course
2914: sub devalidate_getsection_cache {
2915: my ($udom,$unam,$courseid)=@_;
2916: my $hashid="$udom:$unam:$courseid";
2917: &devalidate_cache_new('getsection',$hashid);
2918: }
2919:
2920: sub courseid_to_courseurl {
2921: my ($courseid) = @_;
2922: #already url style courseid
2923: return $courseid if ($courseid =~ m{^/});
2924:
2925: if (exists($env{'course.'.$courseid.'.num'})) {
2926: my $cnum = $env{'course.'.$courseid.'.num'};
2927: my $cdom = $env{'course.'.$courseid.'.domain'};
2928: return "/$cdom/$cnum";
2929: }
2930:
2931: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2932: if (exists($courseinfo{'num'})) {
2933: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2934: }
2935:
2936: return undef;
2937: }
2938:
2939: sub getsection {
2940: my ($udom,$unam,$courseid)=@_;
2941: my $cachetime=1800;
2942:
2943: my $hashid="$udom:$unam:$courseid";
2944: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2945: if (defined($cached)) { return $result; }
2946:
2947: my %Pending;
2948: my %Expired;
2949: #
2950: # Each role can either have not started yet (pending), be active,
2951: # or have expired.
2952: #
2953: # If there is an active role, we are done.
2954: #
2955: # If there is more than one role which has not started yet,
2956: # choose the one which will start sooner
2957: # If there is one role which has not started yet, return it.
2958: #
2959: # If there is more than one expired role, choose the one which ended last.
2960: # If there is a role which has expired, return it.
2961: #
2962: $courseid = &courseid_to_courseurl($courseid);
2963: my %roleshash = &dump('roles',$udom,$unam,$courseid);
2964: foreach my $key (keys(%roleshash)) {
2965: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2966: my $section=$1;
2967: if ($key eq $courseid.'_st') { $section=''; }
2968: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2969: my $now=time;
2970: if (defined($end) && $end && ($now > $end)) {
2971: $Expired{$end}=$section;
2972: next;
2973: }
2974: if (defined($start) && $start && ($now < $start)) {
2975: $Pending{$start}=$section;
2976: next;
2977: }
2978: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2979: }
2980: #
2981: # Presumedly there will be few matching roles from the above
2982: # loop and the sorting time will be negligible.
2983: if (scalar(keys(%Pending))) {
2984: my ($time) = sort {$a <=> $b} keys(%Pending);
2985: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2986: }
2987: if (scalar(keys(%Expired))) {
2988: my @sorted = sort {$a <=> $b} keys(%Expired);
2989: my $time = pop(@sorted);
2990: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2991: }
2992: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2993: }
2994:
2995: sub save_cache {
2996: &purge_remembered();
2997: #&Apache::loncommon::validate_page();
2998: undef(%env);
2999: undef($env_loaded);
3000: }
3001:
3002: my $to_remember=-1;
3003: my %remembered;
3004: my %accessed;
3005: my $kicks=0;
3006: my $hits=0;
3007: sub make_key {
3008: my ($name,$id) = @_;
3009: if (length($id) > 65
3010: && length(&escape($id)) > 200) {
3011: $id=length($id).':'.&Digest::MD5::md5_hex($id);
3012: }
3013: return &escape($name.':'.$id);
3014: }
3015:
3016: sub devalidate_cache_new {
3017: my ($name,$id,$debug) = @_;
3018: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
3019: my $remembered_id=$name.':'.$id;
3020: $id=&make_key($name,$id);
3021: $memcache->delete($id);
3022: delete($remembered{$remembered_id});
3023: delete($accessed{$remembered_id});
3024: }
3025:
3026: sub is_cached_new {
3027: my ($name,$id,$debug) = @_;
3028: my $remembered_id=$name.':'.$id; # this is to avoid make_key (which is slow) whenever possible
3029: if (exists($remembered{$remembered_id})) {
3030: if ($debug) { &Apache::lonnet::logthis("Early return $remembered_id of $remembered{$remembered_id} "); }
3031: $accessed{$remembered_id}=[&gettimeofday()];
3032: $hits++;
3033: return ($remembered{$remembered_id},1);
3034: }
3035: $id=&make_key($name,$id);
3036: my $value = $memcache->get($id);
3037: if (!(defined($value))) {
3038: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
3039: return (undef,undef);
3040: }
3041: if ($value eq '__undef__') {
3042: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
3043: $value=undef;
3044: }
3045: &make_room($remembered_id,$value,$debug);
3046: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
3047: return ($value,1);
3048: }
3049:
3050: sub do_cache_new {
3051: my ($name,$id,$value,$time,$debug) = @_;
3052: my $remembered_id=$name.':'.$id;
3053: $id=&make_key($name,$id);
3054: my $setvalue=$value;
3055: if (!defined($setvalue)) {
3056: $setvalue='__undef__';
3057: }
3058: if (!defined($time) ) {
3059: $time=600;
3060: }
3061: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
3062: my $result = $memcache->set($id,$setvalue,$time);
3063: if (! $result) {
3064: &logthis("caching of id -> $id failed");
3065: $memcache->disconnect_all();
3066: }
3067: # need to make a copy of $value
3068: &make_room($remembered_id,$value,$debug);
3069: return $value;
3070: }
3071:
3072: sub make_room {
3073: my ($remembered_id,$value,$debug)=@_;
3074:
3075: $remembered{$remembered_id}= (ref($value)) ? &Storable::dclone($value)
3076: : $value;
3077: if ($to_remember<0) { return; }
3078: $accessed{$remembered_id}=[&gettimeofday()];
3079: if (scalar(keys(%remembered)) <= $to_remember) { return; }
3080: my $to_kick;
3081: my $max_time=0;
3082: foreach my $other (keys(%accessed)) {
3083: if (&tv_interval($accessed{$other}) > $max_time) {
3084: $to_kick=$other;
3085: $max_time=&tv_interval($accessed{$other});
3086: }
3087: }
3088: delete($remembered{$to_kick});
3089: delete($accessed{$to_kick});
3090: $kicks++;
3091: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
3092: return;
3093: }
3094:
3095: sub purge_remembered {
3096: #&logthis("Tossing ".scalar(keys(%remembered)));
3097: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
3098: undef(%remembered);
3099: undef(%accessed);
3100: }
3101: # ------------------------------------- Read an entry from a user's environment
3102:
3103: sub userenvironment {
3104: my ($udom,$unam,@what)=@_;
3105: my $items;
3106: foreach my $item (@what) {
3107: $items.=&escape($item).'&';
3108: }
3109: $items=~s/\&$//;
3110: my %returnhash=();
3111: my $uhome = &homeserver($unam,$udom);
3112: unless ($uhome eq 'no_host') {
3113: my @answer=split(/\&/,
3114: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
3115: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
3116: return %returnhash;
3117: }
3118: my $i;
3119: for ($i=0;$i<=$#what;$i++) {
3120: $returnhash{$what[$i]}=&unescape($answer[$i]);
3121: }
3122: }
3123: return %returnhash;
3124: }
3125:
3126: # ---------------------------------------------------------- Get a studentphoto
3127: sub studentphoto {
3128: my ($udom,$unam,$ext) = @_;
3129: my $home=&Apache::lonnet::homeserver($unam,$udom);
3130: if (defined($env{'request.course.id'})) {
3131: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
3132: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
3133: return(&retrievestudentphoto($udom,$unam,$ext));
3134: } else {
3135: my ($result,$perm_reqd)=
3136: &Apache::lonnet::auto_photo_permission($unam,$udom);
3137: if ($result eq 'ok') {
3138: if (!($perm_reqd eq 'yes')) {
3139: return(&retrievestudentphoto($udom,$unam,$ext));
3140: }
3141: }
3142: }
3143: }
3144: } else {
3145: my ($result,$perm_reqd) =
3146: &Apache::lonnet::auto_photo_permission($unam,$udom);
3147: if ($result eq 'ok') {
3148: if (!($perm_reqd eq 'yes')) {
3149: return(&retrievestudentphoto($udom,$unam,$ext));
3150: }
3151: }
3152: }
3153: return '/adm/lonKaputt/lonlogo_broken.gif';
3154: }
3155:
3156: sub retrievestudentphoto {
3157: my ($udom,$unam,$ext,$type) = @_;
3158: my $home=&Apache::lonnet::homeserver($unam,$udom);
3159: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
3160: if ($ret eq 'ok') {
3161: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
3162: if ($type eq 'thumbnail') {
3163: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
3164: }
3165: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
3166: return $tokenurl;
3167: } else {
3168: if ($type eq 'thumbnail') {
3169: return '/adm/lonKaputt/genericstudent_tn.gif';
3170: } else {
3171: return '/adm/lonKaputt/lonlogo_broken.gif';
3172: }
3173: }
3174: }
3175:
3176: # -------------------------------------------------------------------- New chat
3177:
3178: sub chatsend {
3179: my ($newentry,$anon,$group)=@_;
3180: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
3181: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3182: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
3183: &reply('chatsend:'.$cdom.':'.$cnum.':'.
3184: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
3185: &escape($newentry)).':'.$group,$chome);
3186: }
3187:
3188: # ------------------------------------------ Find current version of a resource
3189:
3190: sub getversion {
3191: my $fname=&clutter(shift);
3192: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
3193: return ¤tversion(&filelocation('',$fname));
3194: }
3195:
3196: sub currentversion {
3197: my $fname=shift;
3198: my $author=$fname;
3199: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3200: my ($udom,$uname)=split(/\//,$author);
3201: my $home=&homeserver($uname,$udom);
3202: if ($home eq 'no_host') {
3203: return -1;
3204: }
3205: my $answer=&reply("currentversion:$fname",$home);
3206: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3207: return -1;
3208: }
3209: return $answer;
3210: }
3211:
3212: #
3213: # Return special version number of resource if set by override, empty otherwise
3214: #
3215: sub usedversion {
3216: my $fname=shift;
3217: unless ($fname) { $fname=$env{'request.uri'}; }
3218: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
3219: if ($urlversion) { return $urlversion; }
3220: return '';
3221: }
3222:
3223: # ----------------------------- Subscribe to a resource, return URL if possible
3224:
3225: sub subscribe {
3226: my $fname=shift;
3227: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
3228: $fname=~s/[\n\r]//g;
3229: my $author=$fname;
3230: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3231: my ($udom,$uname)=split(/\//,$author);
3232: my $home=homeserver($uname,$udom);
3233: if ($home eq 'no_host') {
3234: return 'not_found';
3235: }
3236: my $answer=reply("sub:$fname",$home);
3237: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3238: $answer.=' by '.$home;
3239: }
3240: return $answer;
3241: }
3242:
3243: # -------------------------------------------------------------- Replicate file
3244:
3245: sub repcopy {
3246: my $filename=shift;
3247: $filename=~s/\/+/\//g;
3248: my $londocroot = $perlvar{'lonDocRoot'};
3249: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
3250: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
3251: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
3252: $filename=~m{^/*(uploaded|editupload)/}) {
3253: return &repcopy_userfile($filename);
3254: }
3255: $filename=~s/[\n\r]//g;
3256: my $transname="$filename.in.transfer";
3257: # FIXME: this should flock
3258: if ((-e $filename) || (-e $transname)) { return 'ok'; }
3259: my $remoteurl=subscribe($filename);
3260: if ($remoteurl =~ /^con_lost by/) {
3261: &logthis("Subscribe returned $remoteurl: $filename");
3262: return 'unavailable';
3263: } elsif ($remoteurl eq 'not_found') {
3264: #&logthis("Subscribe returned not_found: $filename");
3265: return 'not_found';
3266: } elsif ($remoteurl =~ /^rejected by/) {
3267: &logthis("Subscribe returned $remoteurl: $filename");
3268: return 'forbidden';
3269: } elsif ($remoteurl eq 'directory') {
3270: return 'ok';
3271: } else {
3272: my $author=$filename;
3273: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3274: my ($udom,$uname)=split(/\//,$author);
3275: my $home=homeserver($uname,$udom);
3276: unless ($home eq $perlvar{'lonHostID'}) {
3277: my @parts=split(/\//,$filename);
3278: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
3279: if ($path ne "$londocroot/res") {
3280: &logthis("Malconfiguration for replication: $filename");
3281: return 'bad_request';
3282: }
3283: my $count;
3284: for ($count=5;$count<$#parts;$count++) {
3285: $path.="/$parts[$count]";
3286: if ((-e $path)!=1) {
3287: mkdir($path,0777);
3288: }
3289: }
3290: my $request=new HTTP::Request('GET',"$remoteurl");
3291: my $response;
3292: if ($remoteurl =~ m{/raw/}) {
3293: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',0,1);
3294: } else {
3295: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',1);
3296: }
3297: if ($response->is_error()) {
3298: unlink($transname);
3299: my $message=$response->status_line;
3300: &logthis("<font color=\"blue\">WARNING:"
3301: ." LWP get: $message: $filename</font>");
3302: return 'unavailable';
3303: } else {
3304: if ($remoteurl!~/\.meta$/) {
3305: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
3306: my $mresponse;
3307: if ($remoteurl =~ m{/raw/}) {
3308: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',0,1);
3309: } else {
3310: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',1);
3311: }
3312: if ($mresponse->is_error()) {
3313: unlink($filename.'.meta');
3314: &logthis(
3315: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
3316: }
3317: }
3318: rename($transname,$filename);
3319: return 'ok';
3320: }
3321: }
3322: }
3323: }
3324:
3325: # ------------------------------------------------ Get server side include body
3326: sub ssi_body {
3327: my ($filelink,%form)=@_;
3328: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
3329: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
3330: }
3331: my $output='';
3332: my $response;
3333: if ($filelink=~/^https?\:/) {
3334: ($output,$response)=&externalssi($filelink);
3335: } else {
3336: $filelink .= $filelink=~/\?/ ? '&' : '?';
3337: $filelink .= 'inhibitmenu=yes';
3338: ($output,$response)=&ssi($filelink,%form);
3339: }
3340: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
3341: $output=~s/^.*?\<body[^\>]*\>//si;
3342: $output=~s/\<\/body\s*\>.*?$//si;
3343: if (wantarray) {
3344: return ($output, $response);
3345: } else {
3346: return $output;
3347: }
3348: }
3349:
3350: # --------------------------------------------------------- Server Side Include
3351:
3352: sub absolute_url {
3353: my ($host_name) = @_;
3354: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
3355: if ($host_name eq '') {
3356: $host_name = $ENV{'SERVER_NAME'};
3357: }
3358: return $protocol.$host_name;
3359: }
3360:
3361: #
3362: # Server side include.
3363: # Parameters:
3364: # fn Possibly encrypted resource name/id.
3365: # form Hash that describes how the rendering should be done
3366: # and other things.
3367: # Returns:
3368: # Scalar context: The content of the response.
3369: # Array context: 2 element list of the content and the full response object.
3370: #
3371: sub ssi {
3372:
3373: my ($fn,%form)=@_;
3374: my $request;
3375:
3376: $form{'no_update_last_known'}=1;
3377: &Apache::lonenc::check_encrypt(\$fn);
3378: if (%form) {
3379: $request=new HTTP::Request('POST',&absolute_url().$fn);
3380: $request->content(join('&',map {
3381: my $name = escape($_);
3382: "$name=" . ( ref($form{$_}) eq 'ARRAY'
3383: ? join("&$name=", map {escape($_) } @{$form{$_}})
3384: : &escape($form{$_}) );
3385: } keys(%form)));
3386: } else {
3387: $request=new HTTP::Request('GET',&absolute_url().$fn);
3388: }
3389:
3390: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
3391: my $lonhost = $perlvar{'lonHostID'};
3392: my $islocal;
3393: if (($env{'request.course.id'}) &&
3394: ($form{'grade_courseid'} eq $env{'request.course.id'}) &&
3395: ($form{'grade_username'} ne '') && ($form{'grade_domain'} ne '') &&
3396: ($form{'grade_symb'} ne '') &&
3397: (&Apache::lonnet::allowed('mgr',$env{'request.course.id'}.
3398: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:'')))) {
3399: $islocal = 1;
3400: }
3401: my $response= &LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,
3402: '','','',$islocal);
3403:
3404: if (wantarray) {
3405: return ($response->content, $response);
3406: } else {
3407: return $response->content;
3408: }
3409: }
3410:
3411: sub externalssi {
3412: my ($url)=@_;
3413: my $request=new HTTP::Request('GET',$url);
3414: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar);
3415: if (wantarray) {
3416: return ($response->content, $response);
3417: } else {
3418: return $response->content;
3419: }
3420: }
3421:
3422:
3423: # If the local copy of a replicated resource is outdated, trigger a
3424: # connection from the homeserver to flush the delayed queue. If no update
3425: # happens, remove local copies of outdated resource (and corresponding
3426: # metadata file).
3427:
3428: sub remove_stale_resfile {
3429: my ($url) = @_;
3430: my $removed;
3431: if ($url=~m{^/res/($match_domain)/($match_username)/}) {
3432: my $audom = $1;
3433: my $auname = $2;
3434: unless (($url =~ /\.\d+\.\w+$/) || ($url =~ m{^/res/lib/templates/})) {
3435: my $homeserver = &homeserver($auname,$audom);
3436: unless (($homeserver eq 'no_host') ||
3437: (grep { $_ eq $homeserver } ¤t_machine_ids())) {
3438: my $fname = &filelocation('',$url);
3439: if (-e $fname) {
3440: my $hostname = &hostname($homeserver);
3441: if ($hostname) {
3442: my $protocol = $protocol{$homeserver};
3443: $protocol = 'http' if ($protocol ne 'https');
3444: my $uri = &declutter($url);
3445: my $request=new HTTP::Request('HEAD',$protocol.'://'.$hostname.'/raw/'.$uri);
3446: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,5,0,1);
3447: if ($response->is_success()) {
3448: my $remmodtime = &HTTP::Date::str2time( $response->header('Last-modified') );
3449: my $locmodtime = (stat($fname))[9];
3450: if ($locmodtime < $remmodtime) {
3451: my $stale;
3452: my $answer = &reply('pong',$homeserver);
3453: if ($answer eq $homeserver.':'.$perlvar{'lonHostID'}) {
3454: sleep(0.2);
3455: $locmodtime = (stat($fname))[9];
3456: if ($locmodtime < $remmodtime) {
3457: my $posstransfer = $fname.'.in.transfer';
3458: if ((-e $posstransfer) && ($remmodtime < (stat($posstransfer))[9])) {
3459: $removed = 1;
3460: } else {
3461: $stale = 1;
3462: }
3463: } else {
3464: $removed = 1;
3465: }
3466: } else {
3467: $stale = 1;
3468: }
3469: if ($stale) {
3470: unlink($fname);
3471: if ($uri!~/\.meta$/) {
3472: unlink($fname.'.meta');
3473: }
3474: &reply("unsub:$fname",$homeserver);
3475: $removed = 1;
3476: }
3477: }
3478: }
3479: }
3480: }
3481: }
3482: }
3483: }
3484: return $removed;
3485: }
3486:
3487: # -------------------------------- Allow a /uploaded/ URI to be vouched for
3488:
3489: sub allowuploaded {
3490: my ($srcurl,$url)=@_;
3491: $url=&clutter(&declutter($url));
3492: my $dir=$url;
3493: $dir=~s/\/[^\/]+$//;
3494: my %httpref=();
3495: my $httpurl=&hreflocation('',$url);
3496: $httpref{'httpref.'.$httpurl}=$srcurl;
3497: &Apache::lonnet::appenv(\%httpref);
3498: }
3499:
3500: #
3501: # Determine if the current user should be able to edit a particular resource,
3502: # when viewing in course context.
3503: # (a) When viewing resource used to determine if "Edit" item is included in
3504: # Functions.
3505: # (b) When displaying folder contents in course editor, used to determine if
3506: # "Edit" link will be displayed alongside resource.
3507: #
3508: # input: six args -- filename (decluttered), course number, course domain,
3509: # url, symb (if registered) and group (if this is a group
3510: # item -- e.g., bulletin board, group page etc.).
3511: # output: array of five scalars --
3512: # $cfile -- url for file editing if editable on current server
3513: # $home -- homeserver of resource (i.e., for author if published,
3514: # or course if uploaded.).
3515: # $switchserver -- 1 if server switch will be needed.
3516: # $forceedit -- 1 if icon/link should be to go to edit mode
3517: # $forceview -- 1 if icon/link should be to go to view mode
3518: #
3519:
3520: sub can_edit_resource {
3521: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
3522: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
3523: #
3524: # For aboutme pages user can only edit his/her own.
3525: #
3526: if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
3527: my ($sdom,$sname) = ($1,$2);
3528: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
3529: $home = $env{'user.home'};
3530: $cfile = $resurl;
3531: if ($env{'form.forceedit'}) {
3532: $forceview = 1;
3533: } else {
3534: $forceedit = 1;
3535: }
3536: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3537: } else {
3538: return;
3539: }
3540: }
3541:
3542: if ($env{'request.course.id'}) {
3543: my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
3544: if ($group ne '') {
3545: # if this is a group homepage or group bulletin board, check group privs
3546: my $allowed = 0;
3547: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
3548: if ((&allowed('mdg',$env{'request.course.id'}.
3549: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3550: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3551: $allowed = 1;
3552: }
3553: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
3554: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3555: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3556: $allowed = 1;
3557: }
3558: }
3559: if ($allowed) {
3560: $home=&homeserver($cnum,$cdom);
3561: if ($env{'form.forceedit'}) {
3562: $forceview = 1;
3563: } else {
3564: $forceedit = 1;
3565: }
3566: $cfile = $resurl;
3567: } else {
3568: return;
3569: }
3570: } else {
3571: if ($resurl =~ m{^/?adm/viewclasslist$}) {
3572: unless (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
3573: return;
3574: }
3575: } elsif (!$crsedit) {
3576: #
3577: # No edit allowed where CC has switched to student role.
3578: #
3579: return;
3580: }
3581: }
3582: }
3583:
3584: if ($file ne '') {
3585: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
3586: if (&is_course_upload($file,$cnum,$cdom)) {
3587: $uploaded = 1;
3588: $incourse = 1;
3589: if ($file =~/\.(htm|html|css|js|txt)$/) {
3590: $cfile = &hreflocation('',$file);
3591: if ($env{'form.forceedit'}) {
3592: $forceview = 1;
3593: } else {
3594: $forceedit = 1;
3595: }
3596: }
3597: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
3598: $incourse = 1;
3599: if ($env{'form.forceedit'}) {
3600: $forceview = 1;
3601: } else {
3602: $forceedit = 1;
3603: }
3604: $cfile = $resurl;
3605: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
3606: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
3607: $incourse = 1;
3608: if ($env{'form.forceedit'}) {
3609: $forceview = 1;
3610: } else {
3611: $forceedit = 1;
3612: }
3613: $cfile = $resurl;
3614: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem') {
3615: $incourse = 1;
3616: $cfile = $resurl.'/smpedit';
3617: } elsif ($resurl =~ m{^/adm/wrapper/ext/}) {
3618: $incourse = 1;
3619: if ($env{'form.forceedit'}) {
3620: $forceview = 1;
3621: } else {
3622: $forceedit = 1;
3623: }
3624: $cfile = $resurl;
3625: } elsif ($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3626: $incourse = 1;
3627: if ($env{'form.forceedit'}) {
3628: $forceview = 1;
3629: } else {
3630: $forceedit = 1;
3631: }
3632: $cfile = $resurl;
3633: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3634: $incourse = 1;
3635: if ($env{'form.forceedit'}) {
3636: $forceview = 1;
3637: } else {
3638: $forceedit = 1;
3639: }
3640: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3641: }
3642: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
3643: my $template = '/res/lib/templates/simpleproblem.problem';
3644: if (&is_on_map($template)) {
3645: $incourse = 1;
3646: $forceview = 1;
3647: $cfile = $template;
3648: }
3649: } elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3650: $incourse = 1;
3651: if ($env{'form.forceedit'}) {
3652: $forceview = 1;
3653: } else {
3654: $forceedit = 1;
3655: }
3656: $cfile = $resurl;
3657: } elsif (($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3658: $incourse = 1;
3659: if ($env{'form.forceedit'}) {
3660: $forceview = 1;
3661: } else {
3662: $forceedit = 1;
3663: }
3664: $cfile = $resurl;
3665: } elsif (($resurl eq '/adm/extresedit') && ($symb || $env{'form.folderpath'})) {
3666: $incourse = 1;
3667: $forceview = 1;
3668: if ($symb) {
3669: my ($map,$id,$res)=&decode_symb($symb);
3670: $env{'request.symb'} = $symb;
3671: $cfile = &clutter($res);
3672: } else {
3673: $cfile = $env{'form.suppurl'};
3674: my $escfile = &unescape($cfile);
3675: if ($escfile =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3676: $cfile = '/adm/wrapper'.$escfile;
3677: } else {
3678: $escfile =~ s{^http://}{};
3679: $cfile = &escape("/adm/wrapper/ext/$escfile");
3680: }
3681: }
3682: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3683: if ($env{'form.forceedit'}) {
3684: $forceview = 1;
3685: } else {
3686: $forceedit = 1;
3687: }
3688: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3689: }
3690: }
3691: if ($uploaded || $incourse) {
3692: $home=&homeserver($cnum,$cdom);
3693: } elsif ($file !~ m{/$}) {
3694: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
3695: $file=~s{^($match_domain/$match_username)}{/priv/$1};
3696: # Check that the user has permission to edit this resource
3697: my $setpriv = 1;
3698: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
3699: if (defined($cfudom)) {
3700: $home=&homeserver($cfuname,$cfudom);
3701: $cfile=$file;
3702: }
3703: }
3704: if (($cfile ne '') && (!$incourse || $uploaded) &&
3705: (($home ne '') && ($home ne 'no_host'))) {
3706: my @ids=¤t_machine_ids();
3707: unless (grep(/^\Q$home\E$/,@ids)) {
3708: $switchserver=1;
3709: }
3710: }
3711: }
3712: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3713: }
3714:
3715: sub is_course_upload {
3716: my ($file,$cnum,$cdom) = @_;
3717: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
3718: $uploadpath =~ s{^\/}{};
3719: if (($file =~ m{^\Q$uploadpath\E/userfiles/(docs|supplemental)/}) ||
3720: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/})) {
3721: return 1;
3722: }
3723: return;
3724: }
3725:
3726: sub in_course {
3727: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
3728: if ($hideprivileged) {
3729: my $skipuser;
3730: my %coursehash = &coursedescription($cdom.'_'.$cnum);
3731: my @possdoms = ($cdom);
3732: if ($coursehash{'checkforpriv'}) {
3733: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
3734: }
3735: if (&privileged($uname,$udom,\@possdoms)) {
3736: $skipuser = 1;
3737: if ($coursehash{'nothideprivileged'}) {
3738: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3739: my $user;
3740: if ($item =~ /:/) {
3741: $user = $item;
3742: } else {
3743: $user = join(':',split(/[\@]/,$item));
3744: }
3745: if ($user eq $uname.':'.$udom) {
3746: undef($skipuser);
3747: last;
3748: }
3749: }
3750: }
3751: if ($skipuser) {
3752: return 0;
3753: }
3754: }
3755: }
3756: $type ||= 'any';
3757: if (!defined($cdom) || !defined($cnum)) {
3758: my $cid = $env{'request.course.id'};
3759: $cdom = $env{'course.'.$cid.'.domain'};
3760: $cnum = $env{'course.'.$cid.'.num'};
3761: }
3762: my $typesref;
3763: if (($type eq 'any') || ($type eq 'all')) {
3764: $typesref = ['active','previous','future'];
3765: } elsif ($type eq 'previous' || $type eq 'future') {
3766: $typesref = [$type];
3767: }
3768: my %roles = &get_my_roles($uname,$udom,'userroles',
3769: $typesref,undef,[$cdom]);
3770: my ($tmp) = keys(%roles);
3771: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
3772: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
3773: if (@course_roles > 0) {
3774: return 1;
3775: }
3776: return 0;
3777: }
3778:
3779: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
3780: # input: action, courseID, current domain, intended
3781: # path to file, source of file, instruction to parse file for objects,
3782: # ref to hash for embedded objects,
3783: # ref to hash for codebase of java objects.
3784: # reference to scalar to accommodate mime type determined
3785: # from File::MMagic if $parser = parse.
3786: #
3787: # output: url to file (if action was uploaddoc),
3788: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
3789: #
3790: # Allows directory structure to be used within lonUsers/../userfiles/ for a
3791: # course.
3792: #
3793: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3794: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
3795: # course's home server.
3796: #
3797: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
3798: # be copied from $source (current location) to
3799: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3800: # and will then be copied to
3801: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
3802: # course's home server.
3803: #
3804: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3805: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
3806: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3807: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
3808: # in course's home server.
3809: #
3810:
3811: sub process_coursefile {
3812: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
3813: $mimetype)=@_;
3814: my $fetchresult;
3815: my $home=&homeserver($docuname,$docudom);
3816: if ($action eq 'propagate') {
3817: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3818: $home);
3819: } else {
3820: my $fpath = '';
3821: my $fname = $file;
3822: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3823: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3824: my $filepath = &build_filepath($fpath);
3825: if ($action eq 'copy') {
3826: if ($source eq '') {
3827: $fetchresult = 'no source file';
3828: return $fetchresult;
3829: } else {
3830: my $destination = $filepath.'/'.$fname;
3831: rename($source,$destination);
3832: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3833: $home);
3834: }
3835: } elsif ($action eq 'uploaddoc') {
3836: open(my $fh,'>',$filepath.'/'.$fname);
3837: print $fh $env{'form.'.$source};
3838: close($fh);
3839: if ($parser eq 'parse') {
3840: my $mm = new File::MMagic;
3841: my $type = $mm->checktype_filename($filepath.'/'.$fname);
3842: if ($type eq 'text/html') {
3843: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
3844: unless ($parse_result eq 'ok') {
3845: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
3846: }
3847: }
3848: if (ref($mimetype)) {
3849: $$mimetype = $type;
3850: }
3851: }
3852: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3853: $home);
3854: if ($fetchresult eq 'ok') {
3855: return '/uploaded/'.$fpath.'/'.$fname;
3856: } else {
3857: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3858: ' to host '.$home.': '.$fetchresult);
3859: return '/adm/notfound.html';
3860: }
3861: }
3862: }
3863: unless ( $fetchresult eq 'ok') {
3864: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3865: ' to host '.$home.': '.$fetchresult);
3866: }
3867: return $fetchresult;
3868: }
3869:
3870: sub build_filepath {
3871: my ($fpath) = @_;
3872: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
3873: unless ($fpath eq '') {
3874: my @parts=split('/',$fpath);
3875: foreach my $part (@parts) {
3876: $filepath.= '/'.$part;
3877: if ((-e $filepath)!=1) {
3878: mkdir($filepath,0777);
3879: }
3880: }
3881: }
3882: return $filepath;
3883: }
3884:
3885: sub store_edited_file {
3886: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
3887: my $file = $primary_url;
3888: $file =~ s#^/uploaded/$docudom/$docuname/##;
3889: my $fpath = '';
3890: my $fname = $file;
3891: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3892: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3893: my $filepath = &build_filepath($fpath);
3894: open(my $fh,'>',$filepath.'/'.$fname);
3895: print $fh $content;
3896: close($fh);
3897: my $home=&homeserver($docuname,$docudom);
3898: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3899: $home);
3900: if ($$fetchresult eq 'ok') {
3901: return '/uploaded/'.$fpath.'/'.$fname;
3902: } else {
3903: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3904: ' to host '.$home.': '.$$fetchresult);
3905: return '/adm/notfound.html';
3906: }
3907: }
3908:
3909: sub clean_filename {
3910: my ($fname,$args)=@_;
3911: # Replace Windows backslashes by forward slashes
3912: $fname=~s/\\/\//g;
3913: if (!$args->{'keep_path'}) {
3914: # Get rid of everything but the actual filename
3915: $fname=~s/^.*\/([^\/]+)$/$1/;
3916: }
3917: # Replace spaces by underscores
3918: $fname=~s/\s+/\_/g;
3919: # Transliterate non-ascii text to ascii
3920: my $lang = &Apache::lonlocal::current_language();
3921: $fname = &LONCAPA::transliterate::fname_to_ascii($fname,$lang);
3922: # Replace all other weird characters by nothing
3923: $fname=~s{[^/\w\.\-]}{}g;
3924: # Replace all .\d. sequences with _\d. so they no longer look like version
3925: # numbers
3926: $fname=~s/\.(\d+)(?=\.)/_$1/g;
3927: return $fname;
3928: }
3929:
3930: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
3931: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
3932: # image with the same aspect ratio as the original, but with dimensions which do
3933: # not exceed $resizewidth and $resizeheight.
3934:
3935: sub resizeImage {
3936: my ($img_path,$resizewidth,$resizeheight) = @_;
3937: my $ima = Image::Magick->new;
3938: my $resized;
3939: if (-e $img_path) {
3940: $ima->Read($img_path);
3941: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
3942: my $width = $ima->Get('width');
3943: my $height = $ima->Get('height');
3944: if ($width > $resizewidth) {
3945: my $factor = $width/$resizewidth;
3946: my $newheight = $height/$factor;
3947: $ima->Scale(width=>$resizewidth,height=>$newheight);
3948: $resized = 1;
3949: }
3950: }
3951: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
3952: my $width = $ima->Get('width');
3953: my $height = $ima->Get('height');
3954: if ($height > $resizeheight) {
3955: my $factor = $height/$resizeheight;
3956: my $newwidth = $width/$factor;
3957: $ima->Scale(width=>$newwidth,height=>$resizeheight);
3958: $resized = 1;
3959: }
3960: }
3961: if ($resized) {
3962: $ima->Write($img_path);
3963: }
3964: }
3965: return;
3966: }
3967:
3968: # --------------- Take an uploaded file and put it into the userfiles directory
3969: # input: $formname - the contents of the file are in $env{"form.$formname"}
3970: # the desired filename is in $env{"form.$formname.filename"}
3971: # $context - possible values: coursedoc, existingfile, overwrite,
3972: # canceloverwrite, scantron or ''.
3973: # if 'coursedoc': upload to the current course
3974: # if 'existingfile': write file to tmp/overwrites directory
3975: # if 'canceloverwrite': delete file written to tmp/overwrites directory
3976: # $context is passed as argument to &finishuserfileupload
3977: # $subdir - directory in userfile to store the file into
3978: # $parser - instruction to parse file for objects ($parser = parse) or
3979: # if context is 'scantron', $parser is hashref of csv column mapping
3980: # (e.g.,{ PaperID => 0, LastName => 1, FirstName => 2, ID => 3,
3981: # Section => 4, CODE => 5, FirstQuestion => 9 }).
3982: # $allfiles - reference to hash for embedded objects
3983: # $codebase - reference to hash for codebase of java objects
3984: # $desuname - username for permanent storage of uploaded file
3985: # $dsetudom - domain for permanaent storage of uploaded file
3986: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
3987: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
3988: # $resizewidth - width (pixels) to which to resize uploaded image
3989: # $resizeheight - height (pixels) to which to resize uploaded image
3990: # $mimetype - reference to scalar to accommodate mime type determined
3991: # from File::MMagic.
3992: #
3993: # output: url of file in userspace, or error: <message>
3994: # or /adm/notfound.html if failure to upload occurse
3995:
3996: sub userfileupload {
3997: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
3998: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
3999: if (!defined($subdir)) { $subdir='unknown'; }
4000: my $fname=$env{'form.'.$formname.'.filename'};
4001: $fname=&clean_filename($fname);
4002: # See if there is anything left
4003: unless ($fname) { return 'error: no uploaded file'; }
4004: # If filename now begins with a . prepend unix timestamp _ milliseconds
4005: if ($fname =~ /^\./) {
4006: my ($s,$usec) = &gettimeofday();
4007: while (length($usec) < 6) {
4008: $usec = '0'.$usec;
4009: }
4010: $fname = $s.'_'.substr($usec,0,3).$fname;
4011: }
4012: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
4013: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
4014: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
4015: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
4016: my $now = time;
4017: my $filepath;
4018: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
4019: $filepath = 'tmp/helprequests/'.$now;
4020: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
4021: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
4022: '_'.$env{'user.domain'}.'/pending';
4023: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
4024: my ($docuname,$docudom);
4025: if ($destudom =~ /^$match_domain$/) {
4026: $docudom = $destudom;
4027: } else {
4028: $docudom = $env{'user.domain'};
4029: }
4030: if ($destuname =~ /^$match_username$/) {
4031: $docuname = $destuname;
4032: } else {
4033: $docuname = $env{'user.name'};
4034: }
4035: if (exists($env{'form.group'})) {
4036: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4037: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4038: }
4039: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
4040: if ($context eq 'canceloverwrite') {
4041: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
4042: if (-e $tempfile) {
4043: my @info = stat($tempfile);
4044: if ($info[9] eq $env{'form.timestamp'}) {
4045: unlink($tempfile);
4046: }
4047: }
4048: return;
4049: }
4050: }
4051: # Create the directory if not present
4052: my @parts=split(/\//,$filepath);
4053: my $fullpath = $perlvar{'lonDaemons'};
4054: for (my $i=0;$i<@parts;$i++) {
4055: $fullpath .= '/'.$parts[$i];
4056: if ((-e $fullpath)!=1) {
4057: mkdir($fullpath,0777);
4058: }
4059: }
4060: open(my $fh,'>',$fullpath.'/'.$fname);
4061: print $fh $env{'form.'.$formname};
4062: close($fh);
4063: if ($context eq 'existingfile') {
4064: my @info = stat($fullpath.'/'.$fname);
4065: return ($fullpath.'/'.$fname,$info[9]);
4066: } else {
4067: return $fullpath.'/'.$fname;
4068: }
4069: }
4070: if ($subdir eq 'scantron') {
4071: $fname = 'scantron_orig_'.$fname;
4072: } else {
4073: $fname="$subdir/$fname";
4074: }
4075: if ($context eq 'coursedoc') {
4076: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4077: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4078: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
4079: return &finishuserfileupload($docuname,$docudom,
4080: $formname,$fname,$parser,$allfiles,
4081: $codebase,$thumbwidth,$thumbheight,
4082: $resizewidth,$resizeheight,$context,$mimetype);
4083: } else {
4084: if ($env{'form.folder'}) {
4085: $fname=$env{'form.folder'}.'/'.$fname;
4086: }
4087: return &process_coursefile('uploaddoc',$docuname,$docudom,
4088: $fname,$formname,$parser,
4089: $allfiles,$codebase,$mimetype);
4090: }
4091: } elsif (defined($destuname)) {
4092: my $docuname=$destuname;
4093: my $docudom=$destudom;
4094: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
4095: $parser,$allfiles,$codebase,
4096: $thumbwidth,$thumbheight,
4097: $resizewidth,$resizeheight,$context,$mimetype);
4098: } else {
4099: my $docuname=$env{'user.name'};
4100: my $docudom=$env{'user.domain'};
4101: if ((exists($env{'form.group'})) || ($context eq 'syllabus')) {
4102: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4103: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4104: }
4105: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
4106: $parser,$allfiles,$codebase,
4107: $thumbwidth,$thumbheight,
4108: $resizewidth,$resizeheight,$context,$mimetype);
4109: }
4110: }
4111:
4112: sub finishuserfileupload {
4113: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
4114: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
4115: my $path=$docudom.'/'.$docuname.'/';
4116: my $filepath=$perlvar{'lonDocRoot'};
4117:
4118: my ($fnamepath,$file,$fetchthumb);
4119: $file=$fname;
4120: if ($fname=~m|/|) {
4121: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
4122: $path.=$fnamepath.'/';
4123: }
4124: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
4125: my $count;
4126: for ($count=4;$count<=$#parts;$count++) {
4127: $filepath.="/$parts[$count]";
4128: if ((-e $filepath)!=1) {
4129: mkdir($filepath,0777);
4130: }
4131: }
4132:
4133: # Save the file
4134: {
4135: if (!open(FH,'>',$filepath.'/'.$file)) {
4136: &logthis('Failed to create '.$filepath.'/'.$file);
4137: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
4138: return '/adm/notfound.html';
4139: }
4140: if ($context eq 'overwrite') {
4141: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
4142: my $target = $filepath.'/'.$file;
4143: if (-e $source) {
4144: my @info = stat($source);
4145: if ($info[9] eq $env{'form.timestamp'}) {
4146: unless (&File::Copy::move($source,$target)) {
4147: &logthis('Failed to overwrite '.$filepath.'/'.$file);
4148: return "Moving from $source failed";
4149: }
4150: } else {
4151: return "Temporary file: $source had unexpected date/time for last modification";
4152: }
4153: } else {
4154: return "Temporary file: $source missing";
4155: }
4156: } elsif (!print FH ($env{'form.'.$formname})) {
4157: &logthis('Failed to write to '.$filepath.'/'.$file);
4158: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
4159: return '/adm/notfound.html';
4160: }
4161: close(FH);
4162: if ($resizewidth && $resizeheight) {
4163: my $mm = new File::MMagic;
4164: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
4165: if ($mime_type =~ m{^image/}) {
4166: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
4167: }
4168: }
4169: }
4170: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
4171: if (ref($mimetype)) {
4172: if ($$mimetype eq '') {
4173: my $mm = new File::MMagic;
4174: my $type = $mm->checktype_filename($filepath.'/'.$file);
4175: $$mimetype = $type;
4176: }
4177: }
4178: }
4179: if (($context ne 'scantron') && ($parser eq 'parse')) {
4180: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
4181: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
4182: $allfiles,$codebase);
4183: unless ($parse_result eq 'ok') {
4184: &logthis('Failed to parse '.$filepath.$file.
4185: ' for embedded media: '.$parse_result);
4186: }
4187: }
4188: } elsif (($context eq 'scantron') && (ref($parser) eq 'HASH')) {
4189: my $format = $env{'form.scantron_format'};
4190: &bubblesheet_converter($docudom,$filepath.'/'.$file,$parser,$format);
4191: }
4192: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
4193: my $input = $filepath.'/'.$file;
4194: my $output = $filepath.'/'.'tn-'.$file;
4195: my $thumbsize = $thumbwidth.'x'.$thumbheight;
4196: my @args = ('convert','-sample',$thumbsize,$input,$output);
4197: system({$args[0]} @args);
4198: if (-e $filepath.'/'.'tn-'.$file) {
4199: $fetchthumb = 1;
4200: }
4201: }
4202:
4203: # Notify homeserver to grep it
4204: #
4205: my $docuhome=&homeserver($docuname,$docudom);
4206: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
4207: if ($fetchresult eq 'ok') {
4208: if ($fetchthumb) {
4209: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
4210: if ($thumbresult ne 'ok') {
4211: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
4212: $docuhome.': '.$thumbresult);
4213: }
4214: }
4215: #
4216: # Return the URL to it
4217: return '/uploaded/'.$path.$file;
4218: } else {
4219: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
4220: ': '.$fetchresult);
4221: return '/adm/notfound.html';
4222: }
4223: }
4224:
4225: sub extract_embedded_items {
4226: my ($fullpath,$allfiles,$codebase,$content) = @_;
4227: my @state = ();
4228: my (%lastids,%related,%shockwave,%flashvars);
4229: my %javafiles = (
4230: codebase => '',
4231: code => '',
4232: archive => ''
4233: );
4234: my %mediafiles = (
4235: src => '',
4236: movie => '',
4237: );
4238: my $p;
4239: if ($content) {
4240: $p = HTML::LCParser->new($content);
4241: } else {
4242: $p = HTML::LCParser->new($fullpath);
4243: }
4244: while (my $t=$p->get_token()) {
4245: if ($t->[0] eq 'S') {
4246: my ($tagname, $attr) = ($t->[1],$t->[2]);
4247: push(@state, $tagname);
4248: if (lc($tagname) eq 'allow') {
4249: &add_filetype($allfiles,$attr->{'src'},'src');
4250: }
4251: if (lc($tagname) eq 'img') {
4252: &add_filetype($allfiles,$attr->{'src'},'src');
4253: }
4254: if (lc($tagname) eq 'a') {
4255: unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) {
4256: &add_filetype($allfiles,$attr->{'href'},'href');
4257: }
4258: }
4259: if (lc($tagname) eq 'script') {
4260: my $src;
4261: if ($attr->{'archive'} =~ /\.jar$/i) {
4262: &add_filetype($allfiles,$attr->{'archive'},'archive');
4263: } else {
4264: if ($attr->{'src'} ne '') {
4265: $src = $attr->{'src'};
4266: &add_filetype($allfiles,$src,'src');
4267: }
4268: }
4269: my $text = $p->get_trimmed_text();
4270: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
4271: my @swfargs = split(/,/,$1);
4272: foreach my $item (@swfargs) {
4273: $item =~ s/["']//g;
4274: $item =~ s/^\s+//;
4275: $item =~ s/\s+$//;
4276: }
4277: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
4278: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
4279: push(@{$related{$swfargs[0]}},$swfargs[2]);
4280: } else {
4281: $related{$swfargs[0]} = [$swfargs[2]];
4282: }
4283: }
4284: }
4285: }
4286: if (lc($tagname) eq 'link') {
4287: if (lc($attr->{'rel'}) eq 'stylesheet') {
4288: &add_filetype($allfiles,$attr->{'href'},'href');
4289: }
4290: }
4291: if (lc($tagname) eq 'object' ||
4292: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
4293: foreach my $item (keys(%javafiles)) {
4294: $javafiles{$item} = '';
4295: }
4296: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
4297: $lastids{lc($tagname)} = $attr->{'id'};
4298: }
4299: }
4300: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
4301: my $name = lc($attr->{'name'});
4302: foreach my $item (keys(%javafiles)) {
4303: if ($name eq $item) {
4304: $javafiles{$item} = $attr->{'value'};
4305: last;
4306: }
4307: }
4308: my $pathfrom;
4309: foreach my $item (keys(%mediafiles)) {
4310: if ($name eq $item) {
4311: $pathfrom = $attr->{'value'};
4312: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
4313: &add_filetype($allfiles,$pathfrom,$name);
4314: last;
4315: }
4316: }
4317: if ($name eq 'flashvars') {
4318: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
4319: }
4320: if ($pathfrom ne '') {
4321: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
4322: $pathfrom);
4323: }
4324: }
4325: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
4326: foreach my $item (keys(%javafiles)) {
4327: if ($attr->{$item}) {
4328: $javafiles{$item} = $attr->{$item};
4329: last;
4330: }
4331: }
4332: foreach my $item (keys(%mediafiles)) {
4333: if ($attr->{$item}) {
4334: &add_filetype($allfiles,$attr->{$item},$item);
4335: last;
4336: }
4337: }
4338: if (lc($tagname) eq 'embed') {
4339: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
4340: &embedded_dependency($allfiles,\%related,$attr->{'name'},
4341: $attr->{'src'});
4342: }
4343: }
4344: }
4345: if (lc($tagname) eq 'iframe') {
4346: my $src = $attr->{'src'} ;
4347: if (($src ne '') && ($src !~ m{^(/|https?://)})) {
4348: &add_filetype($allfiles,$src,'src');
4349: } elsif ($src =~ m{^/}) {
4350: if ($env{'request.course.id'}) {
4351: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4352: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4353: my $url = &hreflocation('',$fullpath);
4354: if ($url =~ m{^/uploaded/$cdom/$cnum/docs/(\w+/\d+)/}) {
4355: my $relpath = $1;
4356: if ($src =~ m{^/uploaded/$cdom/$cnum/docs/\Q$relpath\E/(.+)$}) {
4357: &add_filetype($allfiles,$1,'src');
4358: }
4359: }
4360: }
4361: }
4362: }
4363: if ($t->[4] =~ m{/>$}) {
4364: pop(@state);
4365: }
4366: } elsif ($t->[0] eq 'E') {
4367: my ($tagname) = ($t->[1]);
4368: if ($javafiles{'codebase'} ne '') {
4369: $javafiles{'codebase'} .= '/';
4370: }
4371: if (lc($tagname) eq 'applet' ||
4372: lc($tagname) eq 'object' ||
4373: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
4374: ) {
4375: foreach my $item (keys(%javafiles)) {
4376: if ($item ne 'codebase' && $javafiles{$item} ne '') {
4377: my $file=$javafiles{'codebase'}.$javafiles{$item};
4378: &add_filetype($allfiles,$file,$item);
4379: }
4380: }
4381: }
4382: pop @state;
4383: }
4384: }
4385: foreach my $id (sort(keys(%flashvars))) {
4386: if ($shockwave{$id} ne '') {
4387: my @pairs = split(/\&/,$flashvars{$id});
4388: foreach my $pair (@pairs) {
4389: my ($key,$value) = split(/\=/,$pair);
4390: if ($key eq 'thumb') {
4391: &add_filetype($allfiles,$value,$key);
4392: } elsif ($key eq 'content') {
4393: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
4394: my ($ext) = ($value =~ /\.([^.]+)$/);
4395: if ($ext ne '') {
4396: &add_filetype($allfiles,$path.$value,$ext);
4397: }
4398: }
4399: }
4400: }
4401: }
4402: return 'ok';
4403: }
4404:
4405: sub add_filetype {
4406: my ($allfiles,$file,$type)=@_;
4407: if (exists($allfiles->{$file})) {
4408: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
4409: push(@{$allfiles->{$file}}, &escape($type));
4410: }
4411: } else {
4412: @{$allfiles->{$file}} = (&escape($type));
4413: }
4414: }
4415:
4416: sub embedded_dependency {
4417: my ($allfiles,$related,$identifier,$pathfrom) = @_;
4418: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
4419: if (($identifier ne '') &&
4420: (ref($related->{$identifier}) eq 'ARRAY') &&
4421: ($pathfrom ne '')) {
4422: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
4423: foreach my $dep (@{$related->{$identifier}}) {
4424: &add_filetype($allfiles,$path.$dep,'object');
4425: }
4426: }
4427: }
4428: return;
4429: }
4430:
4431: sub bubblesheet_converter {
4432: my ($cdom,$fullpath,$config,$format) = @_;
4433: if ((&domain($cdom) ne '') &&
4434: ($fullpath =~ m{^\Q$perlvar{'lonDocRoot'}/userfiles/$cdom/\E$match_courseid/scantron_orig}) &&
4435: (-e $fullpath) && (ref($config) eq 'HASH') && ($format ne '')) {
4436: my (%csvcols,%csvoptions);
4437: if (ref($config->{'fields'}) eq 'HASH') {
4438: %csvcols = %{$config->{'fields'}};
4439: }
4440: if (ref($config->{'options'}) eq 'HASH') {
4441: %csvoptions = %{$config->{'options'}};
4442: }
4443: my %csvbynum = reverse(%csvcols);
4444: my %scantronconf = &get_scantron_config($format,$cdom);
4445: if (keys(%scantronconf)) {
4446: my %bynum = (
4447: $scantronconf{CODEstart} => 'CODEstart',
4448: $scantronconf{IDstart} => 'IDstart',
4449: $scantronconf{PaperID} => 'PaperID',
4450: $scantronconf{FirstName} => 'FirstName',
4451: $scantronconf{LastName} => 'LastName',
4452: $scantronconf{Qstart} => 'Qstart',
4453: );
4454: my @ordered;
4455: foreach my $item (sort { $a <=> $b } keys(%bynum)) {
4456: push(@ordered,$bynum{$item});
4457: }
4458: my %mapstart = (
4459: CODEstart => 'CODE',
4460: IDstart => 'ID',
4461: PaperID => 'PaperID',
4462: FirstName => 'FirstName',
4463: LastName => 'LastName',
4464: Qstart => 'FirstQuestion',
4465: );
4466: my %maplength = (
4467: CODEstart => 'CODElength',
4468: IDstart => 'IDlength',
4469: PaperID => 'PaperIDlength',
4470: FirstName => 'FirstNamelength',
4471: LastName => 'LastNamelength',
4472: );
4473: if (open(my $fh,'<',$fullpath)) {
4474: my $output;
4475: my %lettdig = &letter_to_digits();
4476: my %diglett = reverse(%lettdig);
4477: my $numletts = scalar(keys(%lettdig));
4478: my $num = 0;
4479: while (my $line=<$fh>) {
4480: $num ++;
4481: next if (($num == 1) && ($csvoptions{'hdr'} == 1));
4482: $line =~ s{[\r\n]+$}{};
4483: my %found;
4484: my @values = split(/,/,$line);
4485: my ($qstart,$record);
4486: for (my $i=0; $i<@values; $i++) {
4487: if ((($qstart ne '') && ($i > $qstart)) ||
4488: ($csvbynum{$i} eq 'FirstQuestion')) {
4489: if ($values[$i] eq '') {
4490: $values[$i] = $scantronconf{'Qoff'};
4491: } elsif ($scantronconf{'Qon'} eq 'number') {
4492: if ($values[$i] =~ /^[A-Ja-j]$/) {
4493: $values[$i] = $lettdig{uc($values[$i])};
4494: }
4495: } elsif ($scantronconf{'Qon'} eq 'letter') {
4496: if ($values[$i] =~ /^[0-9]$/) {
4497: $values[$i] = $diglett{$values[$i]};
4498: }
4499: } else {
4500: if ($values[$i] =~ /^[0-9A-Ja-j]$/) {
4501: my $digit;
4502: if ($values[$i] =~ /^[A-Ja-j]$/) {
4503: $digit = $lettdig{uc($values[$i])}-1;
4504: if ($values[$i] eq 'J') {
4505: $digit += $numletts;
4506: }
4507: } elsif ($values[$i] =~ /^[0-9]$/) {
4508: $digit = $values[$i]-1;
4509: if ($values[$i] eq '0') {
4510: $digit += $numletts;
4511: }
4512: }
4513: my $qval='';
4514: for (my $j=0; $j<$scantronconf{'Qlength'}; $j++) {
4515: if ($j == $digit) {
4516: $qval .= $scantronconf{'Qon'};
4517: } else {
4518: $qval .= $scantronconf{'Qoff'};
4519: }
4520: }
4521: $values[$i] = $qval;
4522: }
4523: }
4524: if (length($values[$i]) > $scantronconf{'Qlength'}) {
4525: $values[$i] = substr($values[$i],0,$scantronconf{'Qlength'});
4526: }
4527: my $numblank = $scantronconf{'Qlength'} - length($values[$i]);
4528: if ($numblank > 0) {
4529: $values[$i] .= ($scantronconf{'Qoff'} x $numblank);
4530: }
4531: if ($csvbynum{$i} eq 'FirstQuestion') {
4532: $qstart = $i;
4533: $found{$csvbynum{$i}} = $values[$i];
4534: } else {
4535: $found{'FirstQuestion'} .= $values[$i];
4536: }
4537: } elsif (exists($csvbynum{$i})) {
4538: if ($csvoptions{'rem'}) {
4539: $values[$i] =~ s/^\s+//;
4540: }
4541: if (($csvbynum{$i} eq 'PaperID') && ($csvoptions{'pad'})) {
4542: while (length($values[$i]) < $scantronconf{$maplength{$csvbynum{$i}}}) {
4543: $values[$i] = '0'.$values[$i];
4544: }
4545: }
4546: $found{$csvbynum{$i}} = $values[$i];
4547: }
4548: }
4549: foreach my $item (@ordered) {
4550: my $currlength = 1+length($record);
4551: my $numspaces = $scantronconf{$item} - $currlength;
4552: if ($numspaces > 0) {
4553: $record .= (' ' x $numspaces);
4554: }
4555: if (($mapstart{$item} ne '') && (exists($found{$mapstart{$item}}))) {
4556: unless ($item eq 'Qstart') {
4557: if (length($found{$mapstart{$item}}) > $scantronconf{$maplength{$item}}) {
4558: $found{$mapstart{$item}} = substr($found{$mapstart{$item}},0,$scantronconf{$maplength{$item}});
4559: }
4560: }
4561: $record .= $found{$mapstart{$item}};
4562: }
4563: }
4564: $output .= "$record\n";
4565: }
4566: close($fh);
4567: if ($output) {
4568: if (open(my $fh,'>',$fullpath)) {
4569: print $fh $output;
4570: close($fh);
4571: }
4572: }
4573: }
4574: }
4575: return;
4576: }
4577: }
4578:
4579: sub letter_to_digits {
4580: my %lettdig = (
4581: A => 1,
4582: B => 2,
4583: C => 3,
4584: D => 4,
4585: E => 5,
4586: F => 6,
4587: G => 7,
4588: H => 8,
4589: I => 9,
4590: J => 0,
4591: );
4592: return %lettdig;
4593: }
4594:
4595: sub get_scantron_config {
4596: my ($which,$cdom) = @_;
4597: my @lines = &get_scantronformat_file($cdom);
4598: my %config;
4599: #FIXME probably should move to XML it has already gotten a bit much now
4600: foreach my $line (@lines) {
4601: my ($name,$descrip)=split(/:/,$line);
4602: if ($name ne $which ) { next; }
4603: chomp($line);
4604: my @config=split(/:/,$line);
4605: $config{'name'}=$config[0];
4606: $config{'description'}=$config[1];
4607: $config{'CODElocation'}=$config[2];
4608: $config{'CODEstart'}=$config[3];
4609: $config{'CODElength'}=$config[4];
4610: $config{'IDstart'}=$config[5];
4611: $config{'IDlength'}=$config[6];
4612: $config{'Qstart'}=$config[7];
4613: $config{'Qlength'}=$config[8];
4614: $config{'Qoff'}=$config[9];
4615: $config{'Qon'}=$config[10];
4616: $config{'PaperID'}=$config[11];
4617: $config{'PaperIDlength'}=$config[12];
4618: $config{'FirstName'}=$config[13];
4619: $config{'FirstNamelength'}=$config[14];
4620: $config{'LastName'}=$config[15];
4621: $config{'LastNamelength'}=$config[16];
4622: $config{'BubblesPerRow'}=$config[17];
4623: last;
4624: }
4625: return %config;
4626: }
4627:
4628: sub get_scantronformat_file {
4629: my ($cdom) = @_;
4630: if ($cdom eq '') {
4631: $cdom= $env{'course.'.$env{'request.course.id'}.'.domain'};
4632: }
4633: my %domconfig = &get_dom('configuration',['scantron'],$cdom);
4634: my $gottab = 0;
4635: my @lines;
4636: if (ref($domconfig{'scantron'}) eq 'HASH') {
4637: if ($domconfig{'scantron'}{'scantronformat'} ne '') {
4638: my $formatfile = &getfile($perlvar{'lonDocRoot'}.$domconfig{'scantron'}{'scantronformat'});
4639: if ($formatfile ne '-1') {
4640: @lines = split("\n",$formatfile,-1);
4641: $gottab = 1;
4642: }
4643: }
4644: }
4645: if (!$gottab) {
4646: my $confname = $cdom.'-domainconfig';
4647: my $default = $perlvar{'lonDocRoot'}.'/res/'.$cdom.'/'.$confname.'/default.tab';
4648: my $formatfile = &getfile($default);
4649: if ($formatfile ne '-1') {
4650: @lines = split("\n",$formatfile,-1);
4651: $gottab = 1;
4652: }
4653: }
4654: if (!$gottab) {
4655: my @domains = ¤t_machine_domains();
4656: if (grep(/^\Q$cdom\E$/,@domains)) {
4657: if (open(my $fh,'<',$perlvar{'lonTabDir'}.'/scantronformat.tab')) {
4658: @lines = <$fh>;
4659: close($fh);
4660: }
4661: } else {
4662: if (open(my $fh,'<',$perlvar{'lonTabDir'}.'/default_scantronformat.tab')) {
4663: @lines = <$fh>;
4664: close($fh);
4665: }
4666: }
4667: }
4668: return @lines;
4669: }
4670:
4671: sub removeuploadedurl {
4672: my ($url)=@_;
4673: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
4674: return &removeuserfile($uname,$udom,$fname);
4675: }
4676:
4677: sub removeuserfile {
4678: my ($docuname,$docudom,$fname)=@_;
4679: my $home=&homeserver($docuname,$docudom);
4680: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
4681: if ($result eq 'ok') {
4682: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
4683: my $metafile = $fname.'.meta';
4684: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
4685: my $url = "/uploaded/$docudom/$docuname/$fname";
4686: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
4687: my $sqlresult =
4688: &update_portfolio_table($docuname,$docudom,$file,
4689: 'portfolio_metadata',$group,
4690: 'delete');
4691: }
4692: }
4693: return $result;
4694: }
4695:
4696: sub mkdiruserfile {
4697: my ($docuname,$docudom,$dir)=@_;
4698: my $home=&homeserver($docuname,$docudom);
4699: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
4700: }
4701:
4702: sub renameuserfile {
4703: my ($docuname,$docudom,$old,$new)=@_;
4704: my $home=&homeserver($docuname,$docudom);
4705: my $result = &reply("renameuserfile:$docudom:$docuname:".
4706: &escape("$old").':'.&escape("$new"),$home);
4707: if ($result eq 'ok') {
4708: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
4709: my $oldmeta = $old.'.meta';
4710: my $newmeta = $new.'.meta';
4711: my $metaresult =
4712: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
4713: my $url = "/uploaded/$docudom/$docuname/$old";
4714: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
4715: my $sqlresult =
4716: &update_portfolio_table($docuname,$docudom,$file,
4717: 'portfolio_metadata',$group,
4718: 'delete');
4719: }
4720: }
4721: return $result;
4722: }
4723:
4724: # ------------------------------------------------------------------------- Log
4725:
4726: sub log {
4727: my ($dom,$nam,$hom,$what)=@_;
4728: return critical("log:$dom:$nam:$what",$hom);
4729: }
4730:
4731: # ------------------------------------------------------------------ Course Log
4732: #
4733: # This routine flushes several buffers of non-mission-critical nature
4734: #
4735:
4736: sub flushcourselogs {
4737: &logthis('Flushing log buffers');
4738: #
4739: # course logs
4740: # This is a log of all transactions in a course, which can be used
4741: # for data mining purposes
4742: #
4743: # It also collects the courseid database, which lists last transaction
4744: # times and course titles for all courseids
4745: #
4746: my %courseidbuffer=();
4747: foreach my $crsid (keys(%courselogs)) {
4748: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
4749: &escape($courselogs{$crsid}),
4750: $coursehombuf{$crsid}) eq 'ok') {
4751: delete $courselogs{$crsid};
4752: } else {
4753: &logthis('Failed to flush log buffer for '.$crsid);
4754: if (length($courselogs{$crsid})>40000) {
4755: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
4756: " exceeded maximum size, deleting.</font>");
4757: delete $courselogs{$crsid};
4758: }
4759: }
4760: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
4761: 'description' => $coursedescrbuf{$crsid},
4762: 'inst_code' => $courseinstcodebuf{$crsid},
4763: 'type' => $coursetypebuf{$crsid},
4764: 'owner' => $courseownerbuf{$crsid},
4765: };
4766: }
4767: #
4768: # Write course id database (reverse lookup) to homeserver of courses
4769: # Is used in pickcourse
4770: #
4771: foreach my $crs_home (keys(%courseidbuffer)) {
4772: my $response = &courseidput(&host_domain($crs_home),
4773: $courseidbuffer{$crs_home},
4774: $crs_home,'timeonly');
4775: }
4776: #
4777: # File accesses
4778: # Writes to the dynamic metadata of resources to get hit counts, etc.
4779: #
4780: foreach my $entry (keys(%accesshash)) {
4781: if ($entry =~ /___count$/) {
4782: my ($dom,$name);
4783: ($dom,$name,undef)=
4784: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
4785: if (! defined($dom) || $dom eq '' ||
4786: ! defined($name) || $name eq '') {
4787: my $cid = $env{'request.course.id'};
4788: $dom = $env{'request.'.$cid.'.domain'};
4789: $name = $env{'request.'.$cid.'.num'};
4790: }
4791: my $value = $accesshash{$entry};
4792: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
4793: my %temphash=($url => $value);
4794: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
4795: if ($result eq 'ok') {
4796: delete $accesshash{$entry};
4797: }
4798: } else {
4799: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
4800: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
4801: my %temphash=($entry => $accesshash{$entry});
4802: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
4803: delete $accesshash{$entry};
4804: }
4805: }
4806: }
4807: #
4808: # Roles
4809: # Reverse lookup of user roles for course faculty/staff and co-authorship
4810: #
4811: foreach my $entry (keys(%userrolehash)) {
4812: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
4813: split(/\:/,$entry);
4814: if (&Apache::lonnet::put('nohist_userroles',
4815: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
4816: $rudom,$runame) eq 'ok') {
4817: delete $userrolehash{$entry};
4818: }
4819: }
4820: #
4821: # Reverse lookup of domain roles (dc, ad, li, sc, dh, da, au)
4822: #
4823: my %domrolebuffer = ();
4824: foreach my $entry (keys(%domainrolehash)) {
4825: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
4826: if ($domrolebuffer{$rudom}) {
4827: $domrolebuffer{$rudom}.='&'.&escape($entry).
4828: '='.&escape($domainrolehash{$entry});
4829: } else {
4830: $domrolebuffer{$rudom}.=&escape($entry).
4831: '='.&escape($domainrolehash{$entry});
4832: }
4833: delete $domainrolehash{$entry};
4834: }
4835: foreach my $dom (keys(%domrolebuffer)) {
4836: my %servers;
4837: if (defined(&domain($dom,'primary'))) {
4838: my $primary=&domain($dom,'primary');
4839: my $hostname=&hostname($primary);
4840: $servers{$primary} = $hostname;
4841: } else {
4842: %servers = &get_servers($dom,'library');
4843: }
4844: foreach my $tryserver (keys(%servers)) {
4845: if (&reply('domroleput:'.$dom.':'.
4846: $domrolebuffer{$dom},$tryserver) eq 'ok') {
4847: last;
4848: } else {
4849: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
4850: }
4851: }
4852: }
4853: $dumpcount++;
4854: }
4855:
4856: sub courselog {
4857: my $what=shift;
4858: $what=time.':'.$what;
4859: unless ($env{'request.course.id'}) { return ''; }
4860: $coursedombuf{$env{'request.course.id'}}=
4861: $env{'course.'.$env{'request.course.id'}.'.domain'};
4862: $coursenumbuf{$env{'request.course.id'}}=
4863: $env{'course.'.$env{'request.course.id'}.'.num'};
4864: $coursehombuf{$env{'request.course.id'}}=
4865: $env{'course.'.$env{'request.course.id'}.'.home'};
4866: $coursedescrbuf{$env{'request.course.id'}}=
4867: $env{'course.'.$env{'request.course.id'}.'.description'};
4868: $courseinstcodebuf{$env{'request.course.id'}}=
4869: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
4870: $courseownerbuf{$env{'request.course.id'}}=
4871: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
4872: $coursetypebuf{$env{'request.course.id'}}=
4873: $env{'course.'.$env{'request.course.id'}.'.type'};
4874: if (defined $courselogs{$env{'request.course.id'}}) {
4875: $courselogs{$env{'request.course.id'}}.='&'.$what;
4876: } else {
4877: $courselogs{$env{'request.course.id'}}.=$what;
4878: }
4879: if (length($courselogs{$env{'request.course.id'}})>4048) {
4880: &flushcourselogs();
4881: }
4882: }
4883:
4884: sub courseacclog {
4885: my $fnsymb=shift;
4886: unless ($env{'request.course.id'}) { return ''; }
4887: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
4888: if ($fnsymb=~/$LONCAPA::assess_re/) {
4889: $what.=':POST';
4890: # FIXME: Probably ought to escape things....
4891: foreach my $key (keys(%env)) {
4892: if ($key=~/^form\.(.*)/) {
4893: my $formitem = $1;
4894: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
4895: $what.=':'.$formitem.'='.$env{$key};
4896: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
4897: $what.=':'.$formitem.'='.$env{$key};
4898: }
4899: }
4900: }
4901: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
4902: # FIXME: We should not be depending on a form parameter that someone
4903: # editing lonsearchcat.pm might change in the future.
4904: if ($env{'form.phase'} eq 'course_search') {
4905: $what.= ':POST';
4906: # FIXME: Probably ought to escape things....
4907: foreach my $element ('courseexp','crsfulltext','crsrelated',
4908: 'crsdiscuss') {
4909: $what.=':'.$element.'='.$env{'form.'.$element};
4910: }
4911: }
4912: }
4913: &courselog($what);
4914: }
4915:
4916: sub countacc {
4917: my $url=&declutter(shift);
4918: return if (! defined($url) || $url eq '');
4919: unless ($env{'request.course.id'}) { return ''; }
4920: #
4921: # Mark that this url was used in this course
4922: #
4923: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
4924: #
4925: # Increase the access count for this resource in this child process
4926: #
4927: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
4928: $accesshash{$key}++;
4929: }
4930:
4931: sub linklog {
4932: my ($from,$to)=@_;
4933: $from=&declutter($from);
4934: $to=&declutter($to);
4935: $accesshash{$from.'___'.$to.'___comefrom'}=1;
4936: $accesshash{$to.'___'.$from.'___goto'}=1;
4937: }
4938:
4939: sub statslog {
4940: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
4941: if ($users<2) { return; }
4942: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
4943: 'course' => $env{'request.course.id'},
4944: 'sections' => '"all"',
4945: 'num_students' => $users,
4946: 'part' => $part,
4947: 'symb' => $symb,
4948: 'mean_tries' => $av_attempts,
4949: 'deg_of_diff' => $degdiff});
4950: foreach my $key (keys(%dynstore)) {
4951: $accesshash{$key}=$dynstore{$key};
4952: }
4953: }
4954:
4955: sub userrolelog {
4956: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
4957: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
4958: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
4959: $userrolehash
4960: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
4961: =$tend.':'.$tstart;
4962: }
4963: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
4964: $userrolehash
4965: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
4966: =$tend.':'.$tstart;
4967: }
4968: if ($trole =~ /^(dc|ad|li|au|dg|sc|dh|da)/ ) {
4969: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
4970: $domainrolehash
4971: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
4972: = $tend.':'.$tstart;
4973: }
4974: }
4975:
4976: sub courserolelog {
4977: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
4978: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
4979: my $cdom = $1;
4980: my $cnum = $2;
4981: my $sec = $3;
4982: my $namespace = 'rolelog';
4983: my %storehash = (
4984: role => $trole,
4985: start => $tstart,
4986: end => $tend,
4987: selfenroll => $selfenroll,
4988: context => $context,
4989: );
4990: if ($trole eq 'gr') {
4991: $namespace = 'groupslog';
4992: $storehash{'group'} = $sec;
4993: } else {
4994: $storehash{'section'} = $sec;
4995: }
4996: &write_log('course',$namespace,\%storehash,$delflag,$username,
4997: $domain,$cnum,$cdom);
4998: if (($trole ne 'st') || ($sec ne '')) {
4999: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
5000: }
5001: }
5002: return;
5003: }
5004:
5005: sub domainrolelog {
5006: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
5007: if ($area =~ m{^/($match_domain)/$}) {
5008: my $cdom = $1;
5009: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
5010: my $namespace = 'rolelog';
5011: my %storehash = (
5012: role => $trole,
5013: start => $tstart,
5014: end => $tend,
5015: context => $context,
5016: );
5017: &write_log('domain',$namespace,\%storehash,$delflag,$username,
5018: $domain,$domconfiguser,$cdom);
5019: }
5020: return;
5021:
5022: }
5023:
5024: sub coauthorrolelog {
5025: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
5026: if ($area =~ m{^/($match_domain)/($match_username)$}) {
5027: my $audom = $1;
5028: my $auname = $2;
5029: my $namespace = 'rolelog';
5030: my %storehash = (
5031: role => $trole,
5032: start => $tstart,
5033: end => $tend,
5034: context => $context,
5035: );
5036: &write_log('author',$namespace,\%storehash,$delflag,$username,
5037: $domain,$auname,$audom);
5038: }
5039: return;
5040: }
5041:
5042: sub get_course_adv_roles {
5043: my ($cid,$codes) = @_;
5044: $cid=$env{'request.course.id'} unless (defined($cid));
5045: my %coursehash=&coursedescription($cid);
5046: my $crstype = &Apache::loncommon::course_type($cid);
5047: my %nothide=();
5048: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
5049: if ($user !~ /:/) {
5050: $nothide{join(':',split(/[\@]/,$user))}=1;
5051: } else {
5052: $nothide{$user}=1;
5053: }
5054: }
5055: my @possdoms = ($coursehash{'domain'});
5056: if ($coursehash{'checkforpriv'}) {
5057: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
5058: }
5059: my %returnhash=();
5060: my %dumphash=
5061: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
5062: my $now=time;
5063: my %privileged;
5064: foreach my $entry (keys(%dumphash)) {
5065: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
5066: if (($tstart) && ($tstart<0)) { next; }
5067: if (($tend) && ($tend<$now)) { next; }
5068: if (($tstart) && ($now<$tstart)) { next; }
5069: my ($role,$username,$domain,$section)=split(/\:/,$entry);
5070: if ($username eq '' || $domain eq '') { next; }
5071: if ((&privileged($username,$domain,\@possdoms)) &&
5072: (!$nothide{$username.':'.$domain})) { next; }
5073: if ($role eq 'cr') { next; }
5074: if ($codes) {
5075: if ($section) { $role .= ':'.$section; }
5076: if ($returnhash{$role}) {
5077: $returnhash{$role}.=','.$username.':'.$domain;
5078: } else {
5079: $returnhash{$role}=$username.':'.$domain;
5080: }
5081: } else {
5082: my $key=&plaintext($role,$crstype);
5083: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
5084: if ($returnhash{$key}) {
5085: $returnhash{$key}.=','.$username.':'.$domain;
5086: } else {
5087: $returnhash{$key}=$username.':'.$domain;
5088: }
5089: }
5090: }
5091: return %returnhash;
5092: }
5093:
5094: sub get_my_roles {
5095: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
5096: unless (defined($uname)) { $uname=$env{'user.name'}; }
5097: unless (defined($udom)) { $udom=$env{'user.domain'}; }
5098: my (%dumphash,%nothide);
5099: if ($context eq 'userroles') {
5100: %dumphash = &dump('roles',$udom,$uname);
5101: } else {
5102: %dumphash = &dump('nohist_userroles',$udom,$uname);
5103: if ($hidepriv) {
5104: my %coursehash=&coursedescription($udom.'_'.$uname);
5105: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
5106: if ($user !~ /:/) {
5107: $nothide{join(':',split(/[\@]/,$user))} = 1;
5108: } else {
5109: $nothide{$user} = 1;
5110: }
5111: }
5112: }
5113: }
5114: my %returnhash=();
5115: my $now=time;
5116: my %privileged;
5117: foreach my $entry (keys(%dumphash)) {
5118: my ($role,$tend,$tstart);
5119: if ($context eq 'userroles') {
5120: next if ($entry =~ /^rolesdef/);
5121: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
5122: } else {
5123: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
5124: }
5125: if (($tstart) && ($tstart<0)) { next; }
5126: my $status = 'active';
5127: if (($tend) && ($tend<=$now)) {
5128: $status = 'previous';
5129: }
5130: if (($tstart) && ($now<$tstart)) {
5131: $status = 'future';
5132: }
5133: if (ref($types) eq 'ARRAY') {
5134: if (!grep(/^\Q$status\E$/,@{$types})) {
5135: next;
5136: }
5137: } else {
5138: if ($status ne 'active') {
5139: next;
5140: }
5141: }
5142: my ($rolecode,$username,$domain,$section,$area);
5143: if ($context eq 'userroles') {
5144: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
5145: (undef,$domain,$username,$section) = split(/\//,$area);
5146: } else {
5147: ($role,$username,$domain,$section) = split(/\:/,$entry);
5148: }
5149: if (ref($roledoms) eq 'ARRAY') {
5150: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
5151: next;
5152: }
5153: }
5154: if (ref($roles) eq 'ARRAY') {
5155: if (!grep(/^\Q$role\E$/,@{$roles})) {
5156: if ($role =~ /^cr\//) {
5157: if (!grep(/^cr$/,@{$roles})) {
5158: next;
5159: }
5160: } elsif ($role =~ /^gr\//) {
5161: if (!grep(/^gr$/,@{$roles})) {
5162: next;
5163: }
5164: } else {
5165: next;
5166: }
5167: }
5168: }
5169: if ($hidepriv) {
5170: my @privroles = ('dc','su');
5171: if ($context eq 'userroles') {
5172: next if (grep(/^\Q$role\E$/,@privroles));
5173: } else {
5174: my $possdoms = [$domain];
5175: if (ref($roledoms) eq 'ARRAY') {
5176: push(@{$possdoms},@{$roledoms});
5177: }
5178: if (&privileged($username,$domain,$possdoms,\@privroles)) {
5179: if (!$nothide{$username.':'.$domain}) {
5180: next;
5181: }
5182: }
5183: }
5184: }
5185: if ($withsec) {
5186: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
5187: $tstart.':'.$tend;
5188: } else {
5189: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
5190: }
5191: }
5192: return %returnhash;
5193: }
5194:
5195: sub get_all_adhocroles {
5196: my ($dom) = @_;
5197: my @roles_by_num = ();
5198: my %domdefaults = &get_domain_defaults($dom);
5199: my (%description,%access_in_dom,%access_info);
5200: if (ref($domdefaults{'adhocroles'}) eq 'HASH') {
5201: my $count = 0;
5202: my %domcurrent = %{$domdefaults{'adhocroles'}};
5203: my %ordered;
5204: foreach my $role (sort(keys(%domcurrent))) {
5205: my ($order,$desc,$access_in_dom);
5206: if (ref($domcurrent{$role}) eq 'HASH') {
5207: $order = $domcurrent{$role}{'order'};
5208: $desc = $domcurrent{$role}{'desc'};
5209: $access_in_dom{$role} = $domcurrent{$role}{'access'};
5210: $access_info{$role} = $domcurrent{$role}{$access_in_dom{$role}};
5211: }
5212: if ($order eq '') {
5213: $order = $count;
5214: }
5215: $ordered{$order} = $role;
5216: if ($desc ne '') {
5217: $description{$role} = $desc;
5218: } else {
5219: $description{$role}= $role;
5220: }
5221: $count++;
5222: }
5223: foreach my $item (sort {$a <=> $b } (keys(%ordered))) {
5224: push(@roles_by_num,$ordered{$item});
5225: }
5226: }
5227: return (\@roles_by_num,\%description,\%access_in_dom,\%access_info);
5228: }
5229:
5230: sub get_my_adhocroles {
5231: my ($cid,$checkreg) = @_;
5232: my ($cdom,$cnum,%info,@possroles,$description,$roles_by_num);
5233: if ($env{'request.course.id'} eq $cid) {
5234: $cdom = $env{'course.'.$cid.'.domain'};
5235: $cnum = $env{'course.'.$cid.'.num'};
5236: $info{'internal.coursecode'} = $env{'course.'.$cid.'.internal.coursecode'};
5237: } elsif ($cid =~ /^($match_domain)_($match_courseid)$/) {
5238: $cdom = $1;
5239: $cnum = $2;
5240: %info = &Apache::lonnet::get('environment',['internal.coursecode'],
5241: $cdom,$cnum);
5242: }
5243: if (($info{'internal.coursecode'} ne '') && ($checkreg)) {
5244: my $user = $env{'user.name'}.':'.$env{'user.domain'};
5245: my %rosterhash = &get('classlist',[$user],$cdom,$cnum);
5246: if ($rosterhash{$user} ne '') {
5247: my $type = (split(/:/,$rosterhash{$user}))[5];
5248: return ([],{}) if ($type eq 'auto');
5249: }
5250: }
5251: if (($cdom ne '') && ($cnum ne '')) {
5252: if (($env{"user.role.dh./$cdom/"}) || ($env{"user.role.da./$cdom/"})) {
5253: my $then=$env{'user.login.time'};
5254: my $update=$env{'user.update.time'};
5255: if (!$update) {
5256: $update = $then;
5257: }
5258: my @liveroles;
5259: foreach my $role ('dh','da') {
5260: if ($env{"user.role.$role./$cdom/"}) {
5261: my ($tstart,$tend)=split(/\./,$env{"user.role.$role./$cdom/"});
5262: my $limit = $update;
5263: if ($env{'request.role'} eq "$role./$cdom/") {
5264: $limit = $then;
5265: }
5266: my $activerole = 1;
5267: if ($tstart && $tstart>$limit) { $activerole = 0; }
5268: if ($tend && $tend <$limit) { $activerole = 0; }
5269: if ($activerole) {
5270: push(@liveroles,$role);
5271: }
5272: }
5273: }
5274: if (@liveroles) {
5275: if (&homeserver($cnum,$cdom) ne 'no_host') {
5276: my ($accessref,$accessinfo,%access_in_dom);
5277: ($roles_by_num,$description,$accessref,$accessinfo) = &get_all_adhocroles($cdom);
5278: if (ref($roles_by_num) eq 'ARRAY') {
5279: if (@{$roles_by_num}) {
5280: my %settings;
5281: if ($env{'request.course.id'} eq $cid) {
5282: foreach my $envkey (keys(%env)) {
5283: if ($envkey =~ /^\Qcourse.$cid.\E(internal\.adhoc.+)$/) {
5284: $settings{$1} = $env{$envkey};
5285: }
5286: }
5287: } else {
5288: %settings = &dump('environment',$cdom,$cnum,'internal\.adhoc');
5289: }
5290: my %setincrs;
5291: if ($settings{'internal.adhocaccess'}) {
5292: map { $setincrs{$_} = 1; } split(/,/,$settings{'internal.adhocaccess'});
5293: }
5294: my @statuses;
5295: if ($env{'environment.inststatus'}) {
5296: @statuses = split(/,/,$env{'environment.inststatus'});
5297: }
5298: my $user = $env{'user.name'}.':'.$env{'user.domain'};
5299: if (ref($accessref) eq 'HASH') {
5300: %access_in_dom = %{$accessref};
5301: }
5302: foreach my $role (@{$roles_by_num}) {
5303: my ($curraccess,@okstatus,@personnel);
5304: if ($setincrs{$role}) {
5305: ($curraccess,my $rest) = split(/=/,$settings{'internal.adhoc.'.$role});
5306: if ($curraccess eq 'status') {
5307: @okstatus = split(/\&/,$rest);
5308: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5309: @personnel = split(/\&/,$rest);
5310: }
5311: } else {
5312: $curraccess = $access_in_dom{$role};
5313: if (ref($accessinfo) eq 'HASH') {
5314: if ($curraccess eq 'status') {
5315: if (ref($accessinfo->{$role}) eq 'ARRAY') {
5316: @okstatus = @{$accessinfo->{$role}};
5317: }
5318: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5319: if (ref($accessinfo->{$role}) eq 'ARRAY') {
5320: @personnel = @{$accessinfo->{$role}};
5321: }
5322: }
5323: }
5324: }
5325: if ($curraccess eq 'none') {
5326: next;
5327: } elsif ($curraccess eq 'all') {
5328: push(@possroles,$role);
5329: } elsif ($curraccess eq 'dh') {
5330: if (grep(/^dh$/,@liveroles)) {
5331: push(@possroles,$role);
5332: } else {
5333: next;
5334: }
5335: } elsif ($curraccess eq 'da') {
5336: if (grep(/^da$/,@liveroles)) {
5337: push(@possroles,$role);
5338: } else {
5339: next;
5340: }
5341: } elsif ($curraccess eq 'status') {
5342: if (@okstatus) {
5343: if (!@statuses) {
5344: if (grep(/^default$/,@okstatus)) {
5345: push(@possroles,$role);
5346: }
5347: } else {
5348: foreach my $status (@okstatus) {
5349: if (grep(/^\Q$status\E$/,@statuses)) {
5350: push(@possroles,$role);
5351: last;
5352: }
5353: }
5354: }
5355: }
5356: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5357: if (grep(/^\Q$user\E$/,@personnel)) {
5358: if ($curraccess eq 'exc') {
5359: push(@possroles,$role);
5360: }
5361: } elsif ($curraccess eq 'inc') {
5362: push(@possroles,$role);
5363: }
5364: }
5365: }
5366: }
5367: }
5368: }
5369: }
5370: }
5371: }
5372: unless (ref($description) eq 'HASH') {
5373: if (ref($roles_by_num) eq 'ARRAY') {
5374: my %desc;
5375: map { $desc{$_} = $_; } (@{$roles_by_num});
5376: $description = \%desc;
5377: } else {
5378: $description = {};
5379: }
5380: }
5381: return (\@possroles,$description);
5382: }
5383:
5384: # ----------------------------------------------------- Frontpage Announcements
5385: #
5386: #
5387:
5388: sub postannounce {
5389: my ($server,$text)=@_;
5390: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
5391: unless ($text=~/\w/) { $text=''; }
5392: return &reply('setannounce:'.&escape($text),$server);
5393: }
5394:
5395: sub getannounce {
5396:
5397: if (open(my $fh,"<",$perlvar{'lonDocRoot'}.'/announcement.txt')) {
5398: my $announcement='';
5399: while (my $line = <$fh>) { $announcement .= $line; }
5400: close($fh);
5401: if ($announcement=~/\w/) {
5402: return
5403: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
5404: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
5405: } else {
5406: return '';
5407: }
5408: } else {
5409: return '';
5410: }
5411: }
5412:
5413: # ---------------------------------------------------------- Course ID routines
5414: # Deal with domain's nohist_courseid.db files
5415: #
5416:
5417: sub courseidput {
5418: my ($domain,$storehash,$coursehome,$caller) = @_;
5419: return unless (ref($storehash) eq 'HASH');
5420: my $outcome;
5421: if ($caller eq 'timeonly') {
5422: my $cids = '';
5423: foreach my $item (keys(%$storehash)) {
5424: $cids.=&escape($item).'&';
5425: }
5426: $cids=~s/\&$//;
5427: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
5428: $coursehome);
5429: } else {
5430: my $items = '';
5431: foreach my $item (keys(%$storehash)) {
5432: $items.= &escape($item).'='.
5433: &freeze_escape($$storehash{$item}).'&';
5434: }
5435: $items=~s/\&$//;
5436: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
5437: $coursehome);
5438: }
5439: if ($outcome eq 'unknown_cmd') {
5440: my $what;
5441: foreach my $cid (keys(%$storehash)) {
5442: $what .= &escape($cid).'=';
5443: foreach my $item ('description','inst_code','owner','type') {
5444: $what .= &escape($storehash->{$cid}{$item}).':';
5445: }
5446: $what =~ s/\:$/&/;
5447: }
5448: $what =~ s/\&$//;
5449: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
5450: } else {
5451: return $outcome;
5452: }
5453: }
5454:
5455: sub courseiddump {
5456: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
5457: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
5458: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
5459: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner,
5460: $hasuniquecode,$reqcrsdom,$reqinstcode)=@_;
5461: my $as_hash = 1;
5462: my %returnhash;
5463: if (!$domfilter) { $domfilter=''; }
5464: my %libserv = &all_library();
5465: foreach my $tryserver (keys(%libserv)) {
5466: if ( ( $hostidflag == 1
5467: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
5468: || (!defined($hostidflag)) ) {
5469:
5470: if (($domfilter eq '') ||
5471: (&host_domain($tryserver) eq $domfilter)) {
5472: my $rep;
5473: if (grep { $_ eq $tryserver } current_machine_ids()) {
5474: $rep = LONCAPA::Lond::dump_course_id_handler(
5475: join(":", (&host_domain($tryserver), $sincefilter,
5476: &escape($descfilter), &escape($instcodefilter),
5477: &escape($ownerfilter), &escape($coursefilter),
5478: &escape($typefilter), &escape($regexp_ok),
5479: $as_hash, &escape($selfenrollonly),
5480: &escape($catfilter), $showhidden, $caller,
5481: &escape($cloner), &escape($cc_clone), $cloneonly,
5482: &escape($createdbefore), &escape($createdafter),
5483: &escape($creationcontext),$domcloner,$hasuniquecode,
5484: $reqcrsdom,&escape($reqinstcode))));
5485: } else {
5486: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
5487: $sincefilter.':'.&escape($descfilter).':'.
5488: &escape($instcodefilter).':'.&escape($ownerfilter).
5489: ':'.&escape($coursefilter).':'.&escape($typefilter).
5490: ':'.&escape($regexp_ok).':'.$as_hash.':'.
5491: &escape($selfenrollonly).':'.&escape($catfilter).':'.
5492: $showhidden.':'.$caller.':'.&escape($cloner).':'.
5493: &escape($cc_clone).':'.$cloneonly.':'.
5494: &escape($createdbefore).':'.&escape($createdafter).':'.
5495: &escape($creationcontext).':'.$domcloner.':'.$hasuniquecode.
5496: ':'.$reqcrsdom.':'.&escape($reqinstcode),$tryserver);
5497: }
5498:
5499: my @pairs=split(/\&/,$rep);
5500: foreach my $item (@pairs) {
5501: my ($key,$value)=split(/\=/,$item,2);
5502: $key = &unescape($key);
5503: next if ($key =~ /^error: 2 /);
5504: my $result = &thaw_unescape($value);
5505: if (ref($result) eq 'HASH') {
5506: $returnhash{$key}=$result;
5507: } else {
5508: my @responses = split(/:/,$value);
5509: my @items = ('description','inst_code','owner','type');
5510: for (my $i=0; $i<@responses; $i++) {
5511: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
5512: }
5513: }
5514: }
5515: }
5516: }
5517: }
5518: return %returnhash;
5519: }
5520:
5521: sub courselastaccess {
5522: my ($cdom,$cnum,$hostidref) = @_;
5523: my %returnhash;
5524: if ($cdom && $cnum) {
5525: my $chome = &homeserver($cnum,$cdom);
5526: if ($chome ne 'no_host') {
5527: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
5528: &extract_lastaccess(\%returnhash,$rep);
5529: }
5530: } else {
5531: if (!$cdom) { $cdom=''; }
5532: my %libserv = &all_library();
5533: foreach my $tryserver (keys(%libserv)) {
5534: if (ref($hostidref) eq 'ARRAY') {
5535: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
5536: }
5537: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
5538: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
5539: &extract_lastaccess(\%returnhash,$rep);
5540: }
5541: }
5542: }
5543: return %returnhash;
5544: }
5545:
5546: sub extract_lastaccess {
5547: my ($returnhash,$rep) = @_;
5548: if (ref($returnhash) eq 'HASH') {
5549: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
5550: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
5551: $rep eq '') {
5552: my @pairs=split(/\&/,$rep);
5553: foreach my $item (@pairs) {
5554: my ($key,$value)=split(/\=/,$item,2);
5555: $key = &unescape($key);
5556: next if ($key =~ /^error: 2 /);
5557: $returnhash->{$key} = &thaw_unescape($value);
5558: }
5559: }
5560: }
5561: return;
5562: }
5563:
5564: # ---------------------------------------------------------- DC e-mail
5565:
5566: sub dcmailput {
5567: my ($domain,$msgid,$message,$server)=@_;
5568: my $status = &Apache::lonnet::critical(
5569: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
5570: &escape($message),$server);
5571: return $status;
5572: }
5573:
5574: sub dcmaildump {
5575: my ($dom,$startdate,$enddate,$senders) = @_;
5576: my %returnhash=();
5577:
5578: if (defined(&domain($dom,'primary'))) {
5579: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
5580: &escape($enddate).':';
5581: my @esc_senders=map { &escape($_)} @$senders;
5582: $cmd.=&escape(join('&',@esc_senders));
5583: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
5584: my ($key,$value) = split(/\=/,$line,2);
5585: if (($key) && ($value)) {
5586: $returnhash{&unescape($key)} = &unescape($value);
5587: }
5588: }
5589: }
5590: return %returnhash;
5591: }
5592: # ---------------------------------------------------------- Domain roles
5593:
5594: sub get_domain_roles {
5595: my ($dom,$roles,$startdate,$enddate)=@_;
5596: if ((!defined($startdate)) || ($startdate eq '')) {
5597: $startdate = '.';
5598: }
5599: if ((!defined($enddate)) || ($enddate eq '')) {
5600: $enddate = '.';
5601: }
5602: my $rolelist;
5603: if (ref($roles) eq 'ARRAY') {
5604: $rolelist = join('&',@{$roles});
5605: }
5606: my %personnel = ();
5607:
5608: my %servers = &get_servers($dom,'library');
5609: foreach my $tryserver (keys(%servers)) {
5610: %{$personnel{$tryserver}}=();
5611: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
5612: &escape($startdate).':'.
5613: &escape($enddate).':'.
5614: &escape($rolelist), $tryserver))) {
5615: my ($key,$value) = split(/\=/,$line,2);
5616: if (($key) && ($value)) {
5617: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
5618: }
5619: }
5620: }
5621: return %personnel;
5622: }
5623:
5624: sub get_active_domroles {
5625: my ($dom,$roles) = @_;
5626: return () unless (ref($roles) eq 'ARRAY');
5627: my $now = time;
5628: my %dompersonnel = &get_domain_roles($dom,$roles,$now,$now);
5629: my %domroles;
5630: foreach my $server (keys(%dompersonnel)) {
5631: foreach my $user (sort(keys(%{$dompersonnel{$server}}))) {
5632: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,$user);
5633: $domroles{$uname.':'.$udom} = $dompersonnel{$server}{$user};
5634: }
5635: }
5636: return %domroles;
5637: }
5638:
5639: # ----------------------------------------------------------- Interval timing
5640:
5641: {
5642: # Caches needed for speedup of navmaps
5643: # We don't want to cache this for very long at all (5 seconds at most)
5644: #
5645: # The user for whom we cache
5646: my $cachedkey='';
5647: # The cached times for this user
5648: my %cachedtimes=();
5649: # When this was last done
5650: my $cachedtime='';
5651:
5652: sub load_all_first_access {
5653: my ($uname,$udom,$ignorecache)=@_;
5654: if (($cachedkey eq $uname.':'.$udom) &&
5655: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'}) &&
5656: (!$ignorecache)) {
5657: return;
5658: }
5659: $cachedtime=time;
5660: $cachedkey=$uname.':'.$udom;
5661: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
5662: }
5663:
5664: sub get_first_access {
5665: my ($type,$argsymb,$argmap,$ignorecache)=@_;
5666: my ($symb,$courseid,$udom,$uname)=&whichuser();
5667: if ($argsymb) { $symb=$argsymb; }
5668: my ($map,$id,$res)=&decode_symb($symb);
5669: if ($argmap) { $map = $argmap; }
5670: if ($type eq 'course') {
5671: $res='course';
5672: } elsif ($type eq 'map') {
5673: $res=&symbread($map);
5674: } else {
5675: $res=$symb;
5676: }
5677: &load_all_first_access($uname,$udom,$ignorecache);
5678: return $cachedtimes{"$courseid\0$res"};
5679: }
5680:
5681: sub set_first_access {
5682: my ($type,$interval)=@_;
5683: my ($symb,$courseid,$udom,$uname)=&whichuser();
5684: my ($map,$id,$res)=&decode_symb($symb);
5685: if ($type eq 'course') {
5686: $res='course';
5687: } elsif ($type eq 'map') {
5688: $res=&symbread($map);
5689: } else {
5690: $res=$symb;
5691: }
5692: $cachedkey='';
5693: my $firstaccess=&get_first_access($type,$symb,$map);
5694: if ($firstaccess) {
5695: &logthis("First access time already set ($firstaccess) when attempting ".
5696: "to set new value (type: $type, extent: $res) for $uname:$udom ".
5697: "in $courseid");
5698: return 'already_set';
5699: } else {
5700: my $start = time;
5701: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
5702: $udom,$uname);
5703: if ($putres eq 'ok') {
5704: &put('timerinterval',{"$courseid\0$res"=>$interval},
5705: $udom,$uname);
5706: &appenv(
5707: {
5708: 'course.'.$courseid.'.firstaccess.'.$res => $start,
5709: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
5710: }
5711: );
5712: if (($cachedtime) && (abs($start-$cachedtime) < 5)) {
5713: $cachedtimes{"$courseid\0$res"} = $start;
5714: }
5715: } elsif ($putres ne 'refused') {
5716: &logthis("Result: $putres when attempting to set first access time ".
5717: "(type: $type, extent: $res) for $uname:$udom in $courseid");
5718: }
5719: return $putres;
5720: }
5721: return 'already_set';
5722: }
5723: }
5724:
5725: # --------------------------------------------- Set Expire Date for Spreadsheet
5726:
5727: sub expirespread {
5728: my ($uname,$udom,$stype,$usymb)=@_;
5729: my $cid=$env{'request.course.id'};
5730: if ($cid) {
5731: my $now=time;
5732: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
5733: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
5734: $env{'course.'.$cid.'.num'}.
5735: ':nohist_expirationdates:'.
5736: &escape($key).'='.$now,
5737: $env{'course.'.$cid.'.home'})
5738: }
5739: return 'ok';
5740: }
5741:
5742: # ----------------------------------------------------- Devalidate Spreadsheets
5743:
5744: sub devalidate {
5745: my ($symb,$uname,$udom)=@_;
5746: my $cid=$env{'request.course.id'};
5747: if ($cid) {
5748: # delete the stored spreadsheets for
5749: # - the student level sheet of this user in course's homespace
5750: # - the assessment level sheet for this resource
5751: # for this user in user's homespace
5752: # - current conditional state info
5753: my $key=$uname.':'.$udom.':';
5754: my $status=
5755: &del('nohist_calculatedsheets',
5756: [$key.'studentcalc:'],
5757: $env{'course.'.$cid.'.domain'},
5758: $env{'course.'.$cid.'.num'})
5759: .' '.
5760: &del('nohist_calculatedsheets_'.$cid,
5761: [$key.'assesscalc:'.$symb],$udom,$uname);
5762: unless ($status eq 'ok ok') {
5763: &logthis('Could not devalidate spreadsheet '.
5764: $uname.' at '.$udom.' for '.
5765: $symb.': '.$status);
5766: }
5767: &delenv('user.state.'.$cid);
5768: }
5769: }
5770:
5771: sub get_scalar {
5772: my ($string,$end) = @_;
5773: my $value;
5774: if ($$string =~ s/^([^&]*?)($end)/$2/) {
5775: $value = $1;
5776: } elsif ($$string =~ s/^([^&]*?)&//) {
5777: $value = $1;
5778: }
5779: return &unescape($value);
5780: }
5781:
5782: sub array2str {
5783: my (@array) = @_;
5784: my $result=&arrayref2str(\@array);
5785: $result=~s/^__ARRAY_REF__//;
5786: $result=~s/__END_ARRAY_REF__$//;
5787: return $result;
5788: }
5789:
5790: sub arrayref2str {
5791: my ($arrayref) = @_;
5792: my $result='__ARRAY_REF__';
5793: foreach my $elem (@$arrayref) {
5794: if(ref($elem) eq 'ARRAY') {
5795: $result.=&arrayref2str($elem).'&';
5796: } elsif(ref($elem) eq 'HASH') {
5797: $result.=&hashref2str($elem).'&';
5798: } elsif(ref($elem)) {
5799: #print("Got a ref of ".(ref($elem))." skipping.");
5800: } else {
5801: $result.=&escape($elem).'&';
5802: }
5803: }
5804: $result=~s/\&$//;
5805: $result .= '__END_ARRAY_REF__';
5806: return $result;
5807: }
5808:
5809: sub hash2str {
5810: my (%hash) = @_;
5811: my $result=&hashref2str(\%hash);
5812: $result=~s/^__HASH_REF__//;
5813: $result=~s/__END_HASH_REF__$//;
5814: return $result;
5815: }
5816:
5817: sub hashref2str {
5818: my ($hashref)=@_;
5819: my $result='__HASH_REF__';
5820: foreach my $key (sort(keys(%$hashref))) {
5821: if (ref($key) eq 'ARRAY') {
5822: $result.=&arrayref2str($key).'=';
5823: } elsif (ref($key) eq 'HASH') {
5824: $result.=&hashref2str($key).'=';
5825: } elsif (ref($key)) {
5826: $result.='=';
5827: #print("Got a ref of ".(ref($key))." skipping.");
5828: } else {
5829: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
5830: }
5831:
5832: if(ref($hashref->{$key}) eq 'ARRAY') {
5833: $result.=&arrayref2str($hashref->{$key}).'&';
5834: } elsif(ref($hashref->{$key}) eq 'HASH') {
5835: $result.=&hashref2str($hashref->{$key}).'&';
5836: } elsif(ref($hashref->{$key})) {
5837: $result.='&';
5838: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
5839: } else {
5840: $result.=&escape($hashref->{$key}).'&';
5841: }
5842: }
5843: $result=~s/\&$//;
5844: $result .= '__END_HASH_REF__';
5845: return $result;
5846: }
5847:
5848: sub str2hash {
5849: my ($string)=@_;
5850: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
5851: return %$hash;
5852: }
5853:
5854: sub str2hashref {
5855: my ($string) = @_;
5856:
5857: my %hash;
5858:
5859: if($string !~ /^__HASH_REF__/) {
5860: if (! ($string eq '' || !defined($string))) {
5861: $hash{'error'}='Not hash reference';
5862: }
5863: return (\%hash, $string);
5864: }
5865:
5866: $string =~ s/^__HASH_REF__//;
5867:
5868: while($string !~ /^__END_HASH_REF__/) {
5869: #key
5870: my $key='';
5871: if($string =~ /^__HASH_REF__/) {
5872: ($key, $string)=&str2hashref($string);
5873: if(defined($key->{'error'})) {
5874: $hash{'error'}='Bad data';
5875: return (\%hash, $string);
5876: }
5877: } elsif($string =~ /^__ARRAY_REF__/) {
5878: ($key, $string)=&str2arrayref($string);
5879: if($key->[0] eq 'Array reference error') {
5880: $hash{'error'}='Bad data';
5881: return (\%hash, $string);
5882: }
5883: } else {
5884: $string =~ s/^(.*?)=//;
5885: $key=&unescape($1);
5886: }
5887: $string =~ s/^=//;
5888:
5889: #value
5890: my $value='';
5891: if($string =~ /^__HASH_REF__/) {
5892: ($value, $string)=&str2hashref($string);
5893: if(defined($value->{'error'})) {
5894: $hash{'error'}='Bad data';
5895: return (\%hash, $string);
5896: }
5897: } elsif($string =~ /^__ARRAY_REF__/) {
5898: ($value, $string)=&str2arrayref($string);
5899: if($value->[0] eq 'Array reference error') {
5900: $hash{'error'}='Bad data';
5901: return (\%hash, $string);
5902: }
5903: } else {
5904: $value=&get_scalar(\$string,'__END_HASH_REF__');
5905: }
5906: $string =~ s/^&//;
5907:
5908: $hash{$key}=$value;
5909: }
5910:
5911: $string =~ s/^__END_HASH_REF__//;
5912:
5913: return (\%hash, $string);
5914: }
5915:
5916: sub str2array {
5917: my ($string)=@_;
5918: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
5919: return @$array;
5920: }
5921:
5922: sub str2arrayref {
5923: my ($string) = @_;
5924: my @array;
5925:
5926: if($string !~ /^__ARRAY_REF__/) {
5927: if (! ($string eq '' || !defined($string))) {
5928: $array[0]='Array reference error';
5929: }
5930: return (\@array, $string);
5931: }
5932:
5933: $string =~ s/^__ARRAY_REF__//;
5934:
5935: while($string !~ /^__END_ARRAY_REF__/) {
5936: my $value='';
5937: if($string =~ /^__HASH_REF__/) {
5938: ($value, $string)=&str2hashref($string);
5939: if(defined($value->{'error'})) {
5940: $array[0] ='Array reference error';
5941: return (\@array, $string);
5942: }
5943: } elsif($string =~ /^__ARRAY_REF__/) {
5944: ($value, $string)=&str2arrayref($string);
5945: if($value->[0] eq 'Array reference error') {
5946: $array[0] ='Array reference error';
5947: return (\@array, $string);
5948: }
5949: } else {
5950: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
5951: }
5952: $string =~ s/^&//;
5953:
5954: push(@array, $value);
5955: }
5956:
5957: $string =~ s/^__END_ARRAY_REF__//;
5958:
5959: return (\@array, $string);
5960: }
5961:
5962: # -------------------------------------------------------------------Temp Store
5963:
5964: sub tmpreset {
5965: my ($symb,$namespace,$domain,$stuname) = @_;
5966: if (!$symb) {
5967: $symb=&symbread();
5968: if (!$symb) { $symb= $env{'request.url'}; }
5969: }
5970: $symb=escape($symb);
5971:
5972: if (!$namespace) { $namespace=$env{'request.state'}; }
5973: $namespace=~s/\//\_/g;
5974: $namespace=~s/\W//g;
5975:
5976: if (!$domain) { $domain=$env{'user.domain'}; }
5977: if (!$stuname) { $stuname=$env{'user.name'}; }
5978: if ($domain eq 'public' && $stuname eq 'public') {
5979: $stuname=$ENV{'REMOTE_ADDR'};
5980: }
5981: my $path=LONCAPA::tempdir();
5982: my %hash;
5983: if (tie(%hash,'GDBM_File',
5984: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5985: &GDBM_WRCREAT(),0640)) {
5986: foreach my $key (keys(%hash)) {
5987: if ($key=~ /:$symb/) {
5988: delete($hash{$key});
5989: }
5990: }
5991: }
5992: }
5993:
5994: sub tmpstore {
5995: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
5996:
5997: if (!$symb) {
5998: $symb=&symbread();
5999: if (!$symb) { $symb= $env{'request.url'}; }
6000: }
6001: $symb=escape($symb);
6002:
6003: if (!$namespace) {
6004: # I don't think we would ever want to store this for a course.
6005: # it seems this will only be used if we don't have a course.
6006: #$namespace=$env{'request.course.id'};
6007: #if (!$namespace) {
6008: $namespace=$env{'request.state'};
6009: #}
6010: }
6011: $namespace=~s/\//\_/g;
6012: $namespace=~s/\W//g;
6013: if (!$domain) { $domain=$env{'user.domain'}; }
6014: if (!$stuname) { $stuname=$env{'user.name'}; }
6015: if ($domain eq 'public' && $stuname eq 'public') {
6016: $stuname=$ENV{'REMOTE_ADDR'};
6017: }
6018: my $now=time;
6019: my %hash;
6020: my $path=LONCAPA::tempdir();
6021: if (tie(%hash,'GDBM_File',
6022: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
6023: &GDBM_WRCREAT(),0640)) {
6024: $hash{"version:$symb"}++;
6025: my $version=$hash{"version:$symb"};
6026: my $allkeys='';
6027: foreach my $key (keys(%$storehash)) {
6028: $allkeys.=$key.':';
6029: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
6030: }
6031: $hash{"$version:$symb:timestamp"}=$now;
6032: $allkeys.='timestamp';
6033: $hash{"$version:keys:$symb"}=$allkeys;
6034: if (untie(%hash)) {
6035: return 'ok';
6036: } else {
6037: return "error:$!";
6038: }
6039: } else {
6040: return "error:$!";
6041: }
6042: }
6043:
6044: # -----------------------------------------------------------------Temp Restore
6045:
6046: sub tmprestore {
6047: my ($symb,$namespace,$domain,$stuname) = @_;
6048:
6049: if (!$symb) {
6050: $symb=&symbread();
6051: if (!$symb) { $symb= $env{'request.url'}; }
6052: }
6053: $symb=escape($symb);
6054:
6055: if (!$namespace) { $namespace=$env{'request.state'}; }
6056:
6057: if (!$domain) { $domain=$env{'user.domain'}; }
6058: if (!$stuname) { $stuname=$env{'user.name'}; }
6059: if ($domain eq 'public' && $stuname eq 'public') {
6060: $stuname=$ENV{'REMOTE_ADDR'};
6061: }
6062: my %returnhash;
6063: $namespace=~s/\//\_/g;
6064: $namespace=~s/\W//g;
6065: my %hash;
6066: my $path=LONCAPA::tempdir();
6067: if (tie(%hash,'GDBM_File',
6068: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
6069: &GDBM_READER(),0640)) {
6070: my $version=$hash{"version:$symb"};
6071: $returnhash{'version'}=$version;
6072: my $scope;
6073: for ($scope=1;$scope<=$version;$scope++) {
6074: my $vkeys=$hash{"$scope:keys:$symb"};
6075: my @keys=split(/:/,$vkeys);
6076: my $key;
6077: $returnhash{"$scope:keys"}=$vkeys;
6078: foreach $key (@keys) {
6079: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
6080: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
6081: }
6082: }
6083: if (!(untie(%hash))) {
6084: return "error:$!";
6085: }
6086: } else {
6087: return "error:$!";
6088: }
6089: return %returnhash;
6090: }
6091:
6092: # ----------------------------------------------------------------------- Store
6093:
6094: sub store {
6095: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
6096: my $home='';
6097:
6098: if ($stuname) { $home=&homeserver($stuname,$domain); }
6099:
6100: $symb=&symbclean($symb);
6101: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
6102:
6103: if (!$domain) { $domain=$env{'user.domain'}; }
6104: if (!$stuname) { $stuname=$env{'user.name'}; }
6105:
6106: &devalidate($symb,$stuname,$domain);
6107:
6108: $symb=escape($symb);
6109: if (!$namespace) {
6110: unless ($namespace=$env{'request.course.id'}) {
6111: return '';
6112: }
6113: }
6114: if (!$home) { $home=$env{'user.home'}; }
6115:
6116: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
6117: $$storehash{'host'}=$perlvar{'lonHostID'};
6118:
6119: my $namevalue='';
6120: foreach my $key (keys(%$storehash)) {
6121: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6122: }
6123: $namevalue=~s/\&$//;
6124: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
6125: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
6126: }
6127:
6128: # -------------------------------------------------------------- Critical Store
6129:
6130: sub cstore {
6131: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
6132: my $home='';
6133:
6134: if ($stuname) { $home=&homeserver($stuname,$domain); }
6135:
6136: $symb=&symbclean($symb);
6137: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
6138:
6139: if (!$domain) { $domain=$env{'user.domain'}; }
6140: if (!$stuname) { $stuname=$env{'user.name'}; }
6141:
6142: &devalidate($symb,$stuname,$domain);
6143:
6144: $symb=escape($symb);
6145: if (!$namespace) {
6146: unless ($namespace=$env{'request.course.id'}) {
6147: return '';
6148: }
6149: }
6150: if (!$home) { $home=$env{'user.home'}; }
6151:
6152: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
6153: $$storehash{'host'}=$perlvar{'lonHostID'};
6154:
6155: my $namevalue='';
6156: foreach my $key (keys(%$storehash)) {
6157: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6158: }
6159: $namevalue=~s/\&$//;
6160: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
6161: return critical
6162: ("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
6163: }
6164:
6165: # --------------------------------------------------------------------- Restore
6166:
6167: sub restore {
6168: my ($symb,$namespace,$domain,$stuname) = @_;
6169: my $home='';
6170:
6171: if ($stuname) { $home=&homeserver($stuname,$domain); }
6172:
6173: if (!$symb) {
6174: return if ($namespace eq 'courserequests');
6175: unless ($symb=escape(&symbread())) { return ''; }
6176: } else {
6177: unless ($namespace eq 'courserequests') {
6178: $symb=&escape(&symbclean($symb));
6179: }
6180: }
6181: if (!$namespace) {
6182: unless ($namespace=$env{'request.course.id'}) {
6183: return '';
6184: }
6185: }
6186: if (!$domain) { $domain=$env{'user.domain'}; }
6187: if (!$stuname) { $stuname=$env{'user.name'}; }
6188: if (!$home) { $home=$env{'user.home'}; }
6189: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
6190:
6191: my %returnhash=();
6192: foreach my $line (split(/\&/,$answer)) {
6193: my ($name,$value)=split(/\=/,$line);
6194: $returnhash{&unescape($name)}=&thaw_unescape($value);
6195: }
6196: my $version;
6197: for ($version=1;$version<=$returnhash{'version'};$version++) {
6198: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
6199: $returnhash{$item}=$returnhash{$version.':'.$item};
6200: }
6201: }
6202: return %returnhash;
6203: }
6204:
6205: # ---------------------------------------------------------- Course Description
6206: #
6207: #
6208:
6209: sub coursedescription {
6210: my ($courseid,$args)=@_;
6211: $courseid=~s/^\///;
6212: $courseid=~s/\_/\//g;
6213: my ($cdomain,$cnum)=split(/\//,$courseid);
6214: my $chome=&homeserver($cnum,$cdomain);
6215: my $normalid=$cdomain.'_'.$cnum;
6216: # need to always cache even if we get errors otherwise we keep
6217: # trying and trying and trying to get the course description.
6218: my %envhash=();
6219: my %returnhash=();
6220:
6221: my $expiretime=600;
6222: if ($env{'request.course.id'} eq $normalid) {
6223: $expiretime=120;
6224: }
6225:
6226: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
6227: if (!$args->{'freshen_cache'}
6228: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
6229: foreach my $key (keys(%env)) {
6230: next if ($key !~ /^\Q$prefix\E(.*)/);
6231: my ($setting) = $1;
6232: $returnhash{$setting} = $env{$key};
6233: }
6234: return %returnhash;
6235: }
6236:
6237: # get the data again
6238:
6239: if (!$args->{'one_time'}) {
6240: $envhash{'course.'.$normalid.'.last_cache'}=time;
6241: }
6242:
6243: if ($chome ne 'no_host') {
6244: %returnhash=&dump('environment',$cdomain,$cnum);
6245: if (!exists($returnhash{'con_lost'})) {
6246: my $username = $env{'user.name'}; # Defult username
6247: if(defined $args->{'user'}) {
6248: $username = $args->{'user'};
6249: }
6250: $returnhash{'home'}= $chome;
6251: $returnhash{'domain'} = $cdomain;
6252: $returnhash{'num'} = $cnum;
6253: if (!defined($returnhash{'type'})) {
6254: $returnhash{'type'} = 'Course';
6255: }
6256: while (my ($name,$value) = each %returnhash) {
6257: $envhash{'course.'.$normalid.'.'.$name}=$value;
6258: }
6259: $returnhash{'url'}=&clutter($returnhash{'url'});
6260: $returnhash{'fn'}=LONCAPA::tempdir() .
6261: $username.'_'.$cdomain.'_'.$cnum;
6262: $envhash{'course.'.$normalid.'.home'}=$chome;
6263: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
6264: $envhash{'course.'.$normalid.'.num'}=$cnum;
6265: }
6266: }
6267: if (!$args->{'one_time'}) {
6268: &appenv(\%envhash);
6269: }
6270: return %returnhash;
6271: }
6272:
6273: sub update_released_required {
6274: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
6275: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
6276: $cid = $env{'request.course.id'};
6277: $cdom = $env{'course.'.$cid.'.domain'};
6278: $cnum = $env{'course.'.$cid.'.num'};
6279: $chome = $env{'course.'.$cid.'.home'};
6280: }
6281: if ($needsrelease) {
6282: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
6283: my $needsupdate;
6284: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
6285: $needsupdate = 1;
6286: } else {
6287: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
6288: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
6289: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
6290: $needsupdate = 1;
6291: }
6292: }
6293: if ($needsupdate) {
6294: my %needshash = (
6295: 'internal.releaserequired' => $needsrelease,
6296: );
6297: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
6298: if ($putresult eq 'ok') {
6299: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
6300: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
6301: if (ref($crsinfo{$cid}) eq 'HASH') {
6302: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
6303: &courseidput($cdom,\%crsinfo,$chome,'notime');
6304: }
6305: }
6306: }
6307: }
6308: return;
6309: }
6310:
6311: # -------------------------------------------------See if a user is privileged
6312:
6313: sub privileged {
6314: my ($username,$domain,$possdomains,$possroles)=@_;
6315: my $now = time;
6316: my $roles;
6317: if (ref($possroles) eq 'ARRAY') {
6318: $roles = $possroles;
6319: } else {
6320: $roles = ['dc','su'];
6321: }
6322: if (ref($possdomains) eq 'ARRAY') {
6323: my %privileged = &privileged_by_domain($possdomains,$roles);
6324: foreach my $dom (@{$possdomains}) {
6325: if (($username =~ /^$match_username$/) && ($domain =~ /^$match_domain$/) &&
6326: (ref($privileged{$dom}) eq 'HASH')) {
6327: foreach my $role (@{$roles}) {
6328: if (ref($privileged{$dom}{$role}) eq 'HASH') {
6329: if (exists($privileged{$dom}{$role}{$username.':'.$domain})) {
6330: my ($end,$start) = split(/:/,$privileged{$dom}{$role}{$username.':'.$domain});
6331: return 1 unless (($end && $end < $now) ||
6332: ($start && $start > $now));
6333: }
6334: }
6335: }
6336: }
6337: }
6338: } else {
6339: my %rolesdump = &dump("roles", $domain, $username) or return 0;
6340: my $now = time;
6341:
6342: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys(%rolesdump)}) {
6343: my ($trole, $tend, $tstart) = split(/_/, $role);
6344: if (grep(/^\Q$trole\E$/,@{$roles})) {
6345: return 1 unless ($tend && $tend < $now)
6346: or ($tstart && $tstart > $now);
6347: }
6348: }
6349: }
6350: return 0;
6351: }
6352:
6353: sub privileged_by_domain {
6354: my ($domains,$roles) = @_;
6355: my %privileged = ();
6356: my $cachetime = 60*60*24;
6357: my $now = time;
6358: unless ((ref($domains) eq 'ARRAY') && (ref($roles) eq 'ARRAY')) {
6359: return %privileged;
6360: }
6361: foreach my $dom (@{$domains}) {
6362: next if (ref($privileged{$dom}) eq 'HASH');
6363: my $needroles;
6364: foreach my $role (@{$roles}) {
6365: my ($result,$cached)=&is_cached_new('priv_'.$role,$dom);
6366: if (defined($cached)) {
6367: if (ref($result) eq 'HASH') {
6368: $privileged{$dom}{$role} = $result;
6369: }
6370: } else {
6371: $needroles = 1;
6372: }
6373: }
6374: if ($needroles) {
6375: my %dompersonnel = &get_domain_roles($dom,$roles);
6376: $privileged{$dom} = {};
6377: foreach my $server (keys(%dompersonnel)) {
6378: if (ref($dompersonnel{$server}) eq 'HASH') {
6379: foreach my $item (keys(%{$dompersonnel{$server}})) {
6380: my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
6381: my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
6382: next if ($end && $end < $now);
6383: $privileged{$dom}{$trole}{$uname.':'.$udom} =
6384: $dompersonnel{$server}{$item};
6385: }
6386: }
6387: }
6388: if (ref($privileged{$dom}) eq 'HASH') {
6389: foreach my $role (@{$roles}) {
6390: if (ref($privileged{$dom}{$role}) eq 'HASH') {
6391: &do_cache_new('priv_'.$role,$dom,$privileged{$dom}{$role},$cachetime);
6392: } else {
6393: my %hash = ();
6394: &do_cache_new('priv_'.$role,$dom,\%hash,$cachetime);
6395: }
6396: }
6397: }
6398: }
6399: }
6400: return %privileged;
6401: }
6402:
6403: # -------------------------------------------------------- Get user privileges
6404:
6405: sub rolesinit {
6406: my ($domain, $username) = @_;
6407: my %userroles = ('user.login.time' => time);
6408: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
6409:
6410: # firstaccess and timerinterval are related to timed maps/resources.
6411: # also, blocking can be triggered by an activating timer
6412: # it's saved in the user's %env.
6413: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
6414: my %timerinterval = &dump('timerinterval', $domain, $username);
6415: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
6416: %timerintchk, %timerintenv);
6417:
6418: foreach my $key (keys(%firstaccess)) {
6419: my ($cid, $rest) = split(/\0/, $key);
6420: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
6421: }
6422:
6423: foreach my $key (keys(%timerinterval)) {
6424: my ($cid,$rest) = split(/\0/,$key);
6425: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
6426: }
6427:
6428: my %allroles=();
6429: my %allgroups=();
6430:
6431: for my $area (grep { ! /^rolesdef_/ } keys(%rolesdump)) {
6432: my $role = $rolesdump{$area};
6433: $area =~ s/\_\w\w$//;
6434:
6435: my ($trole, $tend, $tstart, $group_privs);
6436:
6437: if ($role =~ /^cr/) {
6438: # Custom role, defined by a user
6439: # e.g., user.role.cr/msu/smith/mynewrole
6440: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
6441: $trole = $1;
6442: ($tend, $tstart) = split('_', $2);
6443: } else {
6444: $trole = $role;
6445: }
6446: } elsif ($role =~ m|^gr/|) {
6447: # Role of member in a group, defined within a course/community
6448: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
6449: ($trole, $tend, $tstart) = split(/_/, $role);
6450: next if $tstart eq '-1';
6451: ($trole, $group_privs) = split(/\//, $trole);
6452: $group_privs = &unescape($group_privs);
6453: } else {
6454: # Just a normal role, defined in roles.tab
6455: ($trole, $tend, $tstart) = split(/_/,$role);
6456: }
6457:
6458: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
6459: $username);
6460: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
6461:
6462: # role expired or not available yet?
6463: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
6464: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
6465:
6466: next if $area eq '' or $trole eq '';
6467:
6468: my $spec = "$trole.$area";
6469: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
6470:
6471: if ($trole =~ /^cr\//) {
6472: # Custom role, defined by a user
6473: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
6474: } elsif ($trole eq 'gr') {
6475: # Role of a member in a group, defined within a course/community
6476: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
6477: next;
6478: } else {
6479: # Normal role, defined in roles.tab
6480: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
6481: }
6482:
6483: my $cid = $tdomain.'_'.$trest;
6484: unless ($firstaccchk{$cid}) {
6485: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
6486: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
6487: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
6488: $coursetimerstarts{$cid}{$item};
6489: }
6490: }
6491: $firstaccchk{$cid} = 1;
6492: }
6493: unless ($timerintchk{$cid}) {
6494: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
6495: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
6496: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
6497: $coursetimerintervals{$cid}{$item};
6498: }
6499: }
6500: $timerintchk{$cid} = 1;
6501: }
6502: }
6503:
6504: @userroles{'user.author','user.adv','user.rar'} = &set_userprivs(\%userroles,
6505: \%allroles, \%allgroups);
6506: $env{'user.adv'} = $userroles{'user.adv'};
6507: $env{'user.rar'} = $userroles{'user.rar'};
6508:
6509: return (\%userroles,\%firstaccenv,\%timerintenv);
6510: }
6511:
6512: sub set_arearole {
6513: my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
6514: unless ($nolog) {
6515: # log the associated role with the area
6516: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
6517: }
6518: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
6519: }
6520:
6521: sub custom_roleprivs {
6522: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
6523: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
6524: my $homsvr = &homeserver($rauthor,$rdomain);
6525: if (&hostname($homsvr) ne '') {
6526: my ($rdummy,$roledef)=
6527: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
6528: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
6529: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
6530: if (defined($syspriv)) {
6531: if ($trest =~ /^$match_community$/) {
6532: $syspriv =~ s/bre\&S//;
6533: }
6534: $$allroles{'cm./'}.=':'.$syspriv;
6535: $$allroles{$spec.'./'}.=':'.$syspriv;
6536: }
6537: if ($tdomain ne '') {
6538: if (defined($dompriv)) {
6539: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
6540: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
6541: }
6542: if (($trest ne '') && (defined($coursepriv))) {
6543: if ($trole =~ m{^cr/$tdomain/$tdomain\Q-domainconfig\E/([^/]+)$}) {
6544: my $rolename = $1;
6545: $coursepriv = &course_adhocrole_privs($rolename,$tdomain,$trest,$coursepriv);
6546: }
6547: $$allroles{'cm.'.$area}.=':'.$coursepriv;
6548: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
6549: }
6550: }
6551: }
6552: }
6553: }
6554:
6555: sub course_adhocrole_privs {
6556: my ($rolename,$cdom,$cnum,$coursepriv) = @_;
6557: my %overrides = &get('environment',["internal.adhocpriv.$rolename"],$cdom,$cnum);
6558: if ($overrides{"internal.adhocpriv.$rolename"}) {
6559: my (%currprivs,%storeprivs);
6560: foreach my $item (split(/:/,$coursepriv)) {
6561: my ($priv,$restrict) = split(/\&/,$item);
6562: $currprivs{$priv} = $restrict;
6563: }
6564: my (%possadd,%possremove,%full);
6565: foreach my $item (split(/\:/,$Apache::lonnet::pr{'cr:c'})) {
6566: my ($priv,$restrict)=split(/\&/,$item);
6567: $full{$priv} = $restrict;
6568: }
6569: foreach my $item (split(/,/,$overrides{"internal.adhocpriv.$rolename"})) {
6570: next if ($item eq '');
6571: my ($rule,$rest) = split(/=/,$item);
6572: next unless (($rule eq 'off') || ($rule eq 'on'));
6573: foreach my $priv (split(/:/,$rest)) {
6574: if ($priv ne '') {
6575: if ($rule eq 'off') {
6576: $possremove{$priv} = 1;
6577: } else {
6578: $possadd{$priv} = 1;
6579: }
6580: }
6581: }
6582: }
6583: foreach my $priv (sort(keys(%full))) {
6584: if (exists($currprivs{$priv})) {
6585: unless (exists($possremove{$priv})) {
6586: $storeprivs{$priv} = $currprivs{$priv};
6587: }
6588: } elsif (exists($possadd{$priv})) {
6589: $storeprivs{$priv} = $full{$priv};
6590: }
6591: }
6592: $coursepriv = ':'.join(':',map { $_.'&'.$storeprivs{$_}; } sort(keys(%storeprivs)));
6593: }
6594: return $coursepriv;
6595: }
6596:
6597: sub group_roleprivs {
6598: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
6599: my $access = 1;
6600: my $now = time;
6601: if (($tend!=0) && ($tend<$now)) { $access = 0; }
6602: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
6603: if ($access) {
6604: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
6605: $$allgroups{$course}{$group} .=':'.$group_privs;
6606: }
6607: }
6608:
6609: sub standard_roleprivs {
6610: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
6611: if (defined($pr{$trole.':s'})) {
6612: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
6613: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
6614: }
6615: if ($tdomain ne '') {
6616: if (defined($pr{$trole.':d'})) {
6617: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
6618: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
6619: }
6620: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
6621: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
6622: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
6623: }
6624: }
6625: }
6626:
6627: sub set_userprivs {
6628: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
6629: my $author=0;
6630: my $adv=0;
6631: my $rar=0;
6632: my %grouproles = ();
6633: if (keys(%{$allgroups}) > 0) {
6634: my @groupkeys;
6635: foreach my $role (keys(%{$allroles})) {
6636: push(@groupkeys,$role);
6637: }
6638: if (ref($groups_roles) eq 'HASH') {
6639: foreach my $key (keys(%{$groups_roles})) {
6640: unless (grep(/^\Q$key\E$/,@groupkeys)) {
6641: push(@groupkeys,$key);
6642: }
6643: }
6644: }
6645: if (@groupkeys > 0) {
6646: foreach my $role (@groupkeys) {
6647: my ($trole,$area,$sec,$extendedarea);
6648: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
6649: $trole = $1;
6650: $area = $2;
6651: $sec = $3;
6652: $extendedarea = $area.$sec;
6653: if (exists($$allgroups{$area})) {
6654: foreach my $group (keys(%{$$allgroups{$area}})) {
6655: my $spec = $trole.'.'.$extendedarea;
6656: $grouproles{$spec.'.'.$area.'/'.$group} =
6657: $$allgroups{$area}{$group};
6658: }
6659: }
6660: }
6661: }
6662: }
6663: }
6664: foreach my $group (keys(%grouproles)) {
6665: $$allroles{$group} = $grouproles{$group};
6666: }
6667: foreach my $role (keys(%{$allroles})) {
6668: my %thesepriv;
6669: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
6670: foreach my $item (split(/:/,$$allroles{$role})) {
6671: if ($item ne '') {
6672: my ($privilege,$restrictions)=split(/&/,$item);
6673: if ($restrictions eq '') {
6674: $thesepriv{$privilege}='F';
6675: } elsif ($thesepriv{$privilege} ne 'F') {
6676: $thesepriv{$privilege}.=$restrictions;
6677: }
6678: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
6679: if ($thesepriv{'rar'} eq 'F') { $rar=1; }
6680: }
6681: }
6682: my $thesestr='';
6683: foreach my $priv (sort(keys(%thesepriv))) {
6684: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
6685: }
6686: $userroles->{'user.priv.'.$role} = $thesestr;
6687: }
6688: return ($author,$adv,$rar);
6689: }
6690:
6691: sub role_status {
6692: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
6693: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
6694: my ($one,$two) = split(m{\./},$rolekey,2);
6695: (undef,undef,$$role) = split(/\./,$one,3);
6696: unless (!defined($$role) || $$role eq '') {
6697: $$where = '/'.$two;
6698: $$trolecode=$$role.'.'.$$where;
6699: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
6700: $$tstatus='is';
6701: if ($$tstart && $$tstart>$update) {
6702: $$tstatus='future';
6703: if ($$tstart<$now) {
6704: if ($$tstart && $$tstart>$refresh) {
6705: if (($$where ne '') && ($$role ne '')) {
6706: my (%allroles,%allgroups,$group_privs,
6707: %groups_roles,@rolecodes);
6708: my %userroles = (
6709: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
6710: );
6711: @rolecodes = ('cm');
6712: my $spec=$$role.'.'.$$where;
6713: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
6714: if ($$role =~ /^cr\//) {
6715: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
6716: push(@rolecodes,'cr');
6717: } elsif ($$role eq 'gr') {
6718: push(@rolecodes,$$role);
6719: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
6720: $env{'user.name'});
6721: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
6722: (undef,my $group_privs) = split(/\//,$trole);
6723: $group_privs = &unescape($group_privs);
6724: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
6725: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
6726: &get_groups_roles($tdomain,$trest,
6727: \%course_roles,\@rolecodes,
6728: \%groups_roles);
6729: } else {
6730: push(@rolecodes,$$role);
6731: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
6732: }
6733: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%allroles,\%allgroups,
6734: \%groups_roles);
6735: &appenv(\%userroles,\@rolecodes);
6736: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
6737: }
6738: }
6739: $$tstatus = 'is';
6740: }
6741: }
6742: if ($$tend) {
6743: if ($$tend<$update) {
6744: $$tstatus='expired';
6745: } elsif ($$tend<$now) {
6746: $$tstatus='will_not';
6747: }
6748: }
6749: }
6750: }
6751: }
6752:
6753: sub get_groups_roles {
6754: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
6755: return unless((ref($cdom_courseroles) eq 'HASH') &&
6756: (ref($rolecodes) eq 'ARRAY') &&
6757: (ref($groups_roles) eq 'HASH'));
6758: if (keys(%{$cdom_courseroles}) > 0) {
6759: my ($cnum) = ($rest =~ /^($match_courseid)/);
6760: if ($cdom ne '' && $cnum ne '') {
6761: foreach my $key (keys(%{$cdom_courseroles})) {
6762: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
6763: my $crsrole = $1;
6764: my $crssec = $2;
6765: if ($crsrole =~ /^cr/) {
6766: unless (grep(/^cr$/,@{$rolecodes})) {
6767: push(@{$rolecodes},'cr');
6768: }
6769: } else {
6770: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
6771: push(@{$rolecodes},$crsrole);
6772: }
6773: }
6774: my $rolekey = "$crsrole./$cdom/$cnum";
6775: if ($crssec ne '') {
6776: $rolekey .= "/$crssec";
6777: }
6778: $rolekey .= './';
6779: $groups_roles->{$rolekey} = $rolecodes;
6780: }
6781: }
6782: }
6783: }
6784: return;
6785: }
6786:
6787: sub delete_env_groupprivs {
6788: my ($where,$courseroles,$possroles) = @_;
6789: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
6790: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
6791: unless (ref($courseroles->{$udom}) eq 'HASH') {
6792: %{$courseroles->{$udom}} =
6793: &get_my_roles('','','userroles',['active'],
6794: $possroles,[$udom],1);
6795: }
6796: if (ref($courseroles->{$udom}) eq 'HASH') {
6797: foreach my $item (keys(%{$courseroles->{$udom}})) {
6798: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
6799: my $area = '/'.$cdom.'/'.$cnum;
6800: my $privkey = "user.priv.$crsrole.$area";
6801: if ($crssec ne '') {
6802: $privkey .= '/'.$crssec;
6803: }
6804: $privkey .= ".$area/$group";
6805: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
6806: }
6807: }
6808: return;
6809: }
6810:
6811: sub check_adhoc_privs {
6812: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller,$sec) = @_;
6813: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
6814: if ($sec) {
6815: $cckey .= '/'.$sec;
6816: }
6817: my $setprivs;
6818: if ($env{$cckey}) {
6819: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
6820: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
6821: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
6822: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
6823: $setprivs = 1;
6824: }
6825: } else {
6826: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
6827: $setprivs = 1;
6828: }
6829: return $setprivs;
6830: }
6831:
6832: sub set_adhoc_privileges {
6833: # role can be cc, ca, or cr/<dom>/<dom>-domainconfig/role
6834: my ($dcdom,$pickedcourse,$role,$caller,$sec) = @_;
6835: my $area = '/'.$dcdom.'/'.$pickedcourse;
6836: if ($sec ne '') {
6837: $area .= '/'.$sec;
6838: }
6839: my $spec = $role.'.'.$area;
6840: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
6841: $env{'user.name'},1);
6842: my %rolehash = ();
6843: if ($role =~ m{^\Qcr/$dcdom/$dcdom\E\-domainconfig/(\w+)$}) {
6844: my $rolename = $1;
6845: &custom_roleprivs(\%rolehash,$role,$dcdom,$pickedcourse,$spec,$area);
6846: my %domdef = &get_domain_defaults($dcdom);
6847: if (ref($domdef{'adhocroles'}) eq 'HASH') {
6848: if (ref($domdef{'adhocroles'}{$rolename}) eq 'HASH') {
6849: &appenv({'request.role.desc' => $domdef{'adhocroles'}{$rolename}{'desc'},});
6850: }
6851: }
6852: } else {
6853: &standard_roleprivs(\%rolehash,$role,$dcdom,$spec,$pickedcourse,$area);
6854: }
6855: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%rolehash);
6856: &appenv(\%userroles,[$role,'cm']);
6857: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
6858: unless (($caller eq 'constructaccess' && $env{'request.course.id'}) ||
6859: ($caller eq 'tiny')) {
6860: &appenv( {'request.role' => $spec,
6861: 'request.role.domain' => $dcdom,
6862: 'request.course.sec' => $sec,
6863: }
6864: );
6865: my $tadv=0;
6866: if (&allowed('adv') eq 'F') { $tadv=1; }
6867: &appenv({'request.role.adv' => $tadv});
6868: }
6869: }
6870:
6871: # --------------------------------------------------------------- get interface
6872:
6873: sub get {
6874: my ($namespace,$storearr,$udomain,$uname)=@_;
6875: my $items='';
6876: foreach my $item (@$storearr) {
6877: $items.=&escape($item).'&';
6878: }
6879: $items=~s/\&$//;
6880: if (!$udomain) { $udomain=$env{'user.domain'}; }
6881: if (!$uname) { $uname=$env{'user.name'}; }
6882: my $uhome=&homeserver($uname,$udomain);
6883:
6884: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
6885: my @pairs=split(/\&/,$rep);
6886: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
6887: return @pairs;
6888: }
6889: my %returnhash=();
6890: my $i=0;
6891: foreach my $item (@$storearr) {
6892: $returnhash{$item}=&thaw_unescape($pairs[$i]);
6893: $i++;
6894: }
6895: return %returnhash;
6896: }
6897:
6898: # --------------------------------------------------------------- del interface
6899:
6900: sub del {
6901: my ($namespace,$storearr,$udomain,$uname)=@_;
6902: my $items='';
6903: foreach my $item (@$storearr) {
6904: $items.=&escape($item).'&';
6905: }
6906:
6907: $items=~s/\&$//;
6908: if (!$udomain) { $udomain=$env{'user.domain'}; }
6909: if (!$uname) { $uname=$env{'user.name'}; }
6910: my $uhome=&homeserver($uname,$udomain);
6911: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
6912: }
6913:
6914: # -------------------------------------------------------------- dump interface
6915:
6916: sub unserialize {
6917: my ($rep, $escapedkeys) = @_;
6918:
6919: return {} if $rep =~ /^error/;
6920:
6921: my %returnhash=();
6922: foreach my $item (split(/\&/,$rep)) {
6923: my ($key, $value) = split(/=/, $item, 2);
6924: $key = unescape($key) unless $escapedkeys;
6925: next if $key =~ /^error: 2 /;
6926: $returnhash{$key} = &thaw_unescape($value);
6927: }
6928: #return %returnhash;
6929: return \%returnhash;
6930: }
6931:
6932: # see Lond::dump_with_regexp
6933: # if $escapedkeys hash keys won't get unescaped.
6934: sub dump {
6935: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
6936: if (!$udomain) { $udomain=$env{'user.domain'}; }
6937: if (!$uname) { $uname=$env{'user.name'}; }
6938: my $uhome=&homeserver($uname,$udomain);
6939:
6940: if ($regexp) {
6941: $regexp=&escape($regexp);
6942: } else {
6943: $regexp='.';
6944: }
6945: if (grep { $_ eq $uhome } current_machine_ids()) {
6946: # user is hosted on this machine
6947: my $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
6948: $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
6949: return %{unserialize($reply, $escapedkeys)};
6950: }
6951: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
6952: my @pairs=split(/\&/,$rep);
6953: my %returnhash=();
6954: if (!($rep =~ /^error/ )) {
6955: foreach my $item (@pairs) {
6956: my ($key,$value)=split(/=/,$item,2);
6957: $key = unescape($key) unless $escapedkeys;
6958: #$key = &unescape($key);
6959: next if ($key =~ /^error: 2 /);
6960: $returnhash{$key}=&thaw_unescape($value);
6961: }
6962: }
6963: return %returnhash;
6964: }
6965:
6966:
6967: # --------------------------------------------------------- dumpstore interface
6968:
6969: sub dumpstore {
6970: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
6971: # same as dump but keys must be escaped. They may contain colon separated
6972: # lists of values that may themself contain colons (e.g. symbs).
6973: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
6974: }
6975:
6976: # -------------------------------------------------------------- keys interface
6977:
6978: sub getkeys {
6979: my ($namespace,$udomain,$uname)=@_;
6980: if (!$udomain) { $udomain=$env{'user.domain'}; }
6981: if (!$uname) { $uname=$env{'user.name'}; }
6982: my $uhome=&homeserver($uname,$udomain);
6983: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
6984: my @keyarray=();
6985: foreach my $key (split(/\&/,$rep)) {
6986: next if ($key =~ /^error: 2 /);
6987: push(@keyarray,&unescape($key));
6988: }
6989: return @keyarray;
6990: }
6991:
6992: # --------------------------------------------------------------- currentdump
6993: sub currentdump {
6994: my ($courseid,$sdom,$sname)=@_;
6995: $courseid = $env{'request.course.id'} if (! defined($courseid));
6996: $sdom = $env{'user.domain'} if (! defined($sdom));
6997: $sname = $env{'user.name'} if (! defined($sname));
6998: my $uhome = &homeserver($sname,$sdom);
6999: my $rep;
7000:
7001: if (grep { $_ eq $uhome } current_machine_ids()) {
7002: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
7003: $courseid)));
7004: } else {
7005: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
7006: }
7007:
7008: return if ($rep =~ /^(error:|no_such_host)/);
7009: #
7010: my %returnhash=();
7011: #
7012: if ($rep eq 'unknown_cmd') {
7013: # an old lond will not know currentdump
7014: # Do a dump and make it look like a currentdump
7015: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
7016: return if ($tmp[0] =~ /^(error:|no_such_host)/);
7017: my %hash = @tmp;
7018: @tmp=();
7019: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
7020: } else {
7021: my @pairs=split(/\&/,$rep);
7022: foreach my $pair (@pairs) {
7023: my ($key,$value)=split(/=/,$pair,2);
7024: my ($symb,$param) = split(/:/,$key);
7025: $returnhash{&unescape($symb)}->{&unescape($param)} =
7026: &thaw_unescape($value);
7027: }
7028: }
7029: return %returnhash;
7030: }
7031:
7032: sub convert_dump_to_currentdump{
7033: my %hash = %{shift()};
7034: my %returnhash;
7035: # Code ripped from lond, essentially. The only difference
7036: # here is the unescaping done by lonnet::dump(). Conceivably
7037: # we might run in to problems with parameter names =~ /^v\./
7038: while (my ($key,$value) = each(%hash)) {
7039: my ($v,$symb,$param) = split(/:/,$key);
7040: $symb = &unescape($symb);
7041: $param = &unescape($param);
7042: next if ($v eq 'version' || $symb eq 'keys');
7043: next if (exists($returnhash{$symb}) &&
7044: exists($returnhash{$symb}->{$param}) &&
7045: $returnhash{$symb}->{'v.'.$param} > $v);
7046: $returnhash{$symb}->{$param}=$value;
7047: $returnhash{$symb}->{'v.'.$param}=$v;
7048: }
7049: #
7050: # Remove all of the keys in the hashes which keep track of
7051: # the version of the parameter.
7052: while (my ($symb,$param_hash) = each(%returnhash)) {
7053: # use a foreach because we are going to delete from the hash.
7054: foreach my $key (keys(%$param_hash)) {
7055: delete($param_hash->{$key}) if ($key =~ /^v\./);
7056: }
7057: }
7058: return \%returnhash;
7059: }
7060:
7061: # ------------------------------------------------------ critical inc interface
7062:
7063: sub cinc {
7064: return &inc(@_,'critical');
7065: }
7066:
7067: # --------------------------------------------------------------- inc interface
7068:
7069: sub inc {
7070: my ($namespace,$store,$udomain,$uname,$critical) = @_;
7071: if (!$udomain) { $udomain=$env{'user.domain'}; }
7072: if (!$uname) { $uname=$env{'user.name'}; }
7073: my $uhome=&homeserver($uname,$udomain);
7074: my $items='';
7075: if (! ref($store)) {
7076: # got a single value, so use that instead
7077: $items = &escape($store).'=&';
7078: } elsif (ref($store) eq 'SCALAR') {
7079: $items = &escape($$store).'=&';
7080: } elsif (ref($store) eq 'ARRAY') {
7081: $items = join('=&',map {&escape($_);} @{$store});
7082: } elsif (ref($store) eq 'HASH') {
7083: while (my($key,$value) = each(%{$store})) {
7084: $items.= &escape($key).'='.&escape($value).'&';
7085: }
7086: }
7087: $items=~s/\&$//;
7088: if ($critical) {
7089: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
7090: } else {
7091: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
7092: }
7093: }
7094:
7095: # --------------------------------------------------------------- put interface
7096:
7097: sub put {
7098: my ($namespace,$storehash,$udomain,$uname)=@_;
7099: if (!$udomain) { $udomain=$env{'user.domain'}; }
7100: if (!$uname) { $uname=$env{'user.name'}; }
7101: my $uhome=&homeserver($uname,$udomain);
7102: my $items='';
7103: foreach my $item (keys(%$storehash)) {
7104: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
7105: }
7106: $items=~s/\&$//;
7107: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
7108: }
7109:
7110: # ------------------------------------------------------------ newput interface
7111:
7112: sub newput {
7113: my ($namespace,$storehash,$udomain,$uname)=@_;
7114: if (!$udomain) { $udomain=$env{'user.domain'}; }
7115: if (!$uname) { $uname=$env{'user.name'}; }
7116: my $uhome=&homeserver($uname,$udomain);
7117: my $items='';
7118: foreach my $key (keys(%$storehash)) {
7119: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
7120: }
7121: $items=~s/\&$//;
7122: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
7123: }
7124:
7125: # --------------------------------------------------------- putstore interface
7126:
7127: sub putstore {
7128: my ($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog)=@_;
7129: if (!$udomain) { $udomain=$env{'user.domain'}; }
7130: if (!$uname) { $uname=$env{'user.name'}; }
7131: my $uhome=&homeserver($uname,$udomain);
7132: my $items='';
7133: foreach my $key (keys(%$storehash)) {
7134: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
7135: }
7136: $items=~s/\&$//;
7137: my $esc_symb=&escape($symb);
7138: my $esc_v=&escape($version);
7139: my $reply =
7140: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
7141: $uhome);
7142: if (($tolog) && ($reply eq 'ok')) {
7143: my $namevalue='';
7144: foreach my $key (keys(%{$storehash})) {
7145: $namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&';
7146: }
7147: $namevalue .= 'ip='.&escape($ENV{'REMOTE_ADDR'}).
7148: '&host='.&escape($perlvar{'lonHostID'}).
7149: '&version='.$esc_v.
7150: '&by='.&escape($env{'user.name'}.':'.$env{'user.domain'});
7151: &Apache::lonnet::courselog($symb.':'.$uname.':'.$udomain.':PUTSTORE:'.$namevalue);
7152: }
7153: if ($reply eq 'unknown_cmd') {
7154: # gfall back to way things use to be done
7155: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
7156: $uname);
7157: }
7158: return $reply;
7159: }
7160:
7161: sub old_putstore {
7162: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
7163: if (!$udomain) { $udomain=$env{'user.domain'}; }
7164: if (!$uname) { $uname=$env{'user.name'}; }
7165: my $uhome=&homeserver($uname,$udomain);
7166: my %newstorehash;
7167: foreach my $item (keys(%$storehash)) {
7168: my $key = $version.':'.&escape($symb).':'.$item;
7169: $newstorehash{$key} = $storehash->{$item};
7170: }
7171: my $items='';
7172: my %allitems = ();
7173: foreach my $item (keys(%newstorehash)) {
7174: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
7175: my $key = $1.':keys:'.$2;
7176: $allitems{$key} .= $3.':';
7177: }
7178: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
7179: }
7180: foreach my $item (keys(%allitems)) {
7181: $allitems{$item} =~ s/\:$//;
7182: $items.= $item.'='.$allitems{$item}.'&';
7183: }
7184: $items=~s/\&$//;
7185: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
7186: }
7187:
7188: # ------------------------------------------------------ critical put interface
7189:
7190: sub cput {
7191: my ($namespace,$storehash,$udomain,$uname)=@_;
7192: if (!$udomain) { $udomain=$env{'user.domain'}; }
7193: if (!$uname) { $uname=$env{'user.name'}; }
7194: my $uhome=&homeserver($uname,$udomain);
7195: my $items='';
7196: foreach my $item (keys(%$storehash)) {
7197: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
7198: }
7199: $items=~s/\&$//;
7200: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
7201: }
7202:
7203: # -------------------------------------------------------------- eget interface
7204:
7205: sub eget {
7206: my ($namespace,$storearr,$udomain,$uname)=@_;
7207: my $items='';
7208: foreach my $item (@$storearr) {
7209: $items.=&escape($item).'&';
7210: }
7211: $items=~s/\&$//;
7212: if (!$udomain) { $udomain=$env{'user.domain'}; }
7213: if (!$uname) { $uname=$env{'user.name'}; }
7214: my $uhome=&homeserver($uname,$udomain);
7215: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
7216: my @pairs=split(/\&/,$rep);
7217: my %returnhash=();
7218: my $i=0;
7219: foreach my $item (@$storearr) {
7220: $returnhash{$item}=&thaw_unescape($pairs[$i]);
7221: $i++;
7222: }
7223: return %returnhash;
7224: }
7225:
7226: # ------------------------------------------------------------ tmpput interface
7227: sub tmpput {
7228: my ($storehash,$server,$context)=@_;
7229: my $items='';
7230: foreach my $item (keys(%$storehash)) {
7231: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
7232: }
7233: $items=~s/\&$//;
7234: if (defined($context)) {
7235: $items .= ':'.&escape($context);
7236: }
7237: return &reply("tmpput:$items",$server);
7238: }
7239:
7240: # ------------------------------------------------------------ tmpget interface
7241: sub tmpget {
7242: my ($token,$server)=@_;
7243: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
7244: my $rep=&reply("tmpget:$token",$server);
7245: my %returnhash;
7246: if ($rep =~ /^(con_lost|error|no_such_host)/i) {
7247: return %returnhash;
7248: }
7249: foreach my $item (split(/\&/,$rep)) {
7250: my ($key,$value)=split(/=/,$item);
7251: $returnhash{&unescape($key)}=&thaw_unescape($value);
7252: }
7253: return %returnhash;
7254: }
7255:
7256: # ------------------------------------------------------------ tmpdel interface
7257: sub tmpdel {
7258: my ($token,$server)=@_;
7259: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
7260: return &reply("tmpdel:$token",$server);
7261: }
7262:
7263: # ------------------------------------------------------------ get_timebased_id
7264:
7265: sub get_timebased_id {
7266: my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
7267: $maxtries) = @_;
7268: my ($newid,$error,$dellock);
7269: unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
7270: return ('','ok','invalid call to get suffix');
7271: }
7272:
7273: # set defaults for any optional args for which values were not supplied
7274: if ($who eq '') {
7275: $who = $env{'user.name'}.':'.$env{'user.domain'};
7276: }
7277: if (!$locktries) {
7278: $locktries = 3;
7279: }
7280: if (!$maxtries) {
7281: $maxtries = 10;
7282: }
7283:
7284: if (($cdom eq '') || ($cnum eq '')) {
7285: if ($env{'request.course.id'}) {
7286: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7287: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7288: }
7289: if (($cdom eq '') || ($cnum eq '')) {
7290: return ('','ok','call to get suffix not in course context');
7291: }
7292: }
7293:
7294: # construct locking item
7295: my $lockhash = {
7296: $prefix."\0".'locked_'.$keyid => $who,
7297: };
7298: my $tries = 0;
7299:
7300: # attempt to get lock on nohist_$namespace file
7301: my $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
7302: while (($gotlock ne 'ok') && $tries <$locktries) {
7303: $tries ++;
7304: sleep 1;
7305: $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
7306: }
7307:
7308: # attempt to get unique identifier, based on current timestamp
7309: if ($gotlock eq 'ok') {
7310: my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
7311: my $id = time;
7312: $newid = $id;
7313: if ($idtype eq 'addcode') {
7314: $newid .= &sixnum_code();
7315: }
7316: my $idtries = 0;
7317: while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
7318: if ($idtype eq 'concat') {
7319: $newid = $id.$idtries;
7320: } elsif ($idtype eq 'addcode') {
7321: $newid = $newid.&sixnum_code();
7322: } else {
7323: $newid ++;
7324: }
7325: $idtries ++;
7326: }
7327: if (!exists($inuse{$prefix."\0".$newid})) {
7328: my %new_item = (
7329: $prefix."\0".$newid => $who,
7330: );
7331: my $putresult = &Apache::lonnet::put('nohist_'.$namespace,\%new_item,
7332: $cdom,$cnum);
7333: if ($putresult ne 'ok') {
7334: undef($newid);
7335: $error = 'error saving new item: '.$putresult;
7336: }
7337: } else {
7338: undef($newid);
7339: $error = ('error: no unique suffix available for the new item ');
7340: }
7341: # remove lock
7342: my @del_lock = ($prefix."\0".'locked_'.$keyid);
7343: $dellock = &Apache::lonnet::del('nohist_'.$namespace,\@del_lock,$cdom,$cnum);
7344: } else {
7345: $error = "error: could not obtain lockfile\n";
7346: $dellock = 'ok';
7347: if (($prefix eq 'paste') && ($namespace eq 'courseeditor') && ($keyid eq 'num')) {
7348: $dellock = 'nolock';
7349: }
7350: }
7351: return ($newid,$dellock,$error);
7352: }
7353:
7354: sub sixnum_code {
7355: my $code;
7356: for (0..6) {
7357: $code .= int( rand(9) );
7358: }
7359: return $code;
7360: }
7361:
7362: # -------------------------------------------------- portfolio access checking
7363:
7364: sub portfolio_access {
7365: my ($requrl,$clientip) = @_;
7366: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
7367: my $result = &get_portfolio_access($udom,$unum,$file_name,$group,$clientip);
7368: if ($result) {
7369: my %setters;
7370: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
7371: my ($startblock,$endblock) =
7372: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
7373: if ($startblock && $endblock) {
7374: return 'B';
7375: }
7376: } else {
7377: my ($startblock,$endblock) =
7378: &Apache::loncommon::blockcheck(\%setters,'port');
7379: if ($startblock && $endblock) {
7380: return 'B';
7381: }
7382: }
7383: }
7384: if ($result eq 'ok') {
7385: return 'F';
7386: } elsif ($result =~ /^[^:]+:guest_/) {
7387: return 'A';
7388: }
7389: return '';
7390: }
7391:
7392: sub get_portfolio_access {
7393: my ($udom,$unum,$file_name,$group,$clientip,$access_hash) = @_;
7394:
7395: if (!ref($access_hash)) {
7396: my $current_perms = &get_portfile_permissions($udom,$unum);
7397: my %access_controls = &get_access_controls($current_perms,$group,
7398: $file_name);
7399: $access_hash = $access_controls{$file_name};
7400: }
7401:
7402: my ($public,$guest,@domains,@users,@courses,@groups,@ips);
7403: my $now = time;
7404: if (ref($access_hash) eq 'HASH') {
7405: foreach my $key (keys(%{$access_hash})) {
7406: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
7407: if ($start > $now) {
7408: next;
7409: }
7410: if ($end && $end<$now) {
7411: next;
7412: }
7413: if ($scope eq 'public') {
7414: $public = $key;
7415: last;
7416: } elsif ($scope eq 'guest') {
7417: $guest = $key;
7418: } elsif ($scope eq 'domains') {
7419: push(@domains,$key);
7420: } elsif ($scope eq 'users') {
7421: push(@users,$key);
7422: } elsif ($scope eq 'course') {
7423: push(@courses,$key);
7424: } elsif ($scope eq 'group') {
7425: push(@groups,$key);
7426: } elsif ($scope eq 'ip') {
7427: push(@ips,$key);
7428: }
7429: }
7430: if ($public) {
7431: return 'ok';
7432: } elsif (@ips > 0) {
7433: my $allowed;
7434: foreach my $ipkey (@ips) {
7435: if (ref($access_hash->{$ipkey}{'ip'}) eq 'ARRAY') {
7436: if (&Apache::loncommon::check_ip_acc(join(',',@{$access_hash->{$ipkey}{'ip'}}),$clientip)) {
7437: $allowed = 1;
7438: last;
7439: }
7440: }
7441: }
7442: if ($allowed) {
7443: return 'ok';
7444: }
7445: }
7446: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
7447: if ($guest) {
7448: return $guest;
7449: }
7450: } else {
7451: if (@domains > 0) {
7452: foreach my $domkey (@domains) {
7453: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
7454: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
7455: return 'ok';
7456: }
7457: }
7458: }
7459: }
7460: if (@users > 0) {
7461: foreach my $userkey (@users) {
7462: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
7463: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
7464: if (ref($item) eq 'HASH') {
7465: if (($item->{'uname'} eq $env{'user.name'}) &&
7466: ($item->{'udom'} eq $env{'user.domain'})) {
7467: return 'ok';
7468: }
7469: }
7470: }
7471: }
7472: }
7473: }
7474: my %roleshash;
7475: my @courses_and_groups = @courses;
7476: push(@courses_and_groups,@groups);
7477: if (@courses_and_groups > 0) {
7478: my (%allgroups,%allroles);
7479: my ($start,$end,$role,$sec,$group);
7480: foreach my $envkey (%env) {
7481: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
7482: my $cid = $2.'_'.$3;
7483: if ($1 eq 'gr') {
7484: $group = $4;
7485: $allgroups{$cid}{$group} = $env{$envkey};
7486: } else {
7487: if ($4 eq '') {
7488: $sec = 'none';
7489: } else {
7490: $sec = $4;
7491: }
7492: $allroles{$cid}{$1}{$sec} = $env{$envkey};
7493: }
7494: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
7495: my $cid = $2.'_'.$3;
7496: if ($4 eq '') {
7497: $sec = 'none';
7498: } else {
7499: $sec = $4;
7500: }
7501: $allroles{$cid}{$1}{$sec} = $env{$envkey};
7502: }
7503: }
7504: if (keys(%allroles) == 0) {
7505: return;
7506: }
7507: foreach my $key (@courses_and_groups) {
7508: my %content = %{$$access_hash{$key}};
7509: my $cnum = $content{'number'};
7510: my $cdom = $content{'domain'};
7511: my $cid = $cdom.'_'.$cnum;
7512: if (!exists($allroles{$cid})) {
7513: next;
7514: }
7515: foreach my $role_id (keys(%{$content{'roles'}})) {
7516: my @sections = @{$content{'roles'}{$role_id}{'section'}};
7517: my @groups = @{$content{'roles'}{$role_id}{'group'}};
7518: my @status = @{$content{'roles'}{$role_id}{'access'}};
7519: my @roles = @{$content{'roles'}{$role_id}{'role'}};
7520: foreach my $role (keys(%{$allroles{$cid}})) {
7521: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
7522: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
7523: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
7524: if (grep/^all$/,@sections) {
7525: return 'ok';
7526: } else {
7527: if (grep/^$sec$/,@sections) {
7528: return 'ok';
7529: }
7530: }
7531: }
7532: }
7533: if (keys(%{$allgroups{$cid}}) == 0) {
7534: if (grep/^none$/,@groups) {
7535: return 'ok';
7536: }
7537: } else {
7538: if (grep/^all$/,@groups) {
7539: return 'ok';
7540: }
7541: foreach my $group (keys(%{$allgroups{$cid}})) {
7542: if (grep/^$group$/,@groups) {
7543: return 'ok';
7544: }
7545: }
7546: }
7547: }
7548: }
7549: }
7550: }
7551: }
7552: if ($guest) {
7553: return $guest;
7554: }
7555: }
7556: }
7557: return;
7558: }
7559:
7560: sub course_group_datechecker {
7561: my ($dates,$now,$status) = @_;
7562: my ($start,$end) = split(/\./,$dates);
7563: if (!$start && !$end) {
7564: return 'ok';
7565: }
7566: if (grep/^active$/,@{$status}) {
7567: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
7568: return 'ok';
7569: }
7570: }
7571: if (grep/^previous$/,@{$status}) {
7572: if ($end > $now ) {
7573: return 'ok';
7574: }
7575: }
7576: if (grep/^future$/,@{$status}) {
7577: if ($start > $now) {
7578: return 'ok';
7579: }
7580: }
7581: return;
7582: }
7583:
7584: sub parse_portfolio_url {
7585: my ($url) = @_;
7586:
7587: my ($type,$udom,$unum,$group,$file_name);
7588:
7589: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
7590: $type = 1;
7591: $udom = $1;
7592: $unum = $2;
7593: $file_name = $3;
7594: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
7595: $type = 2;
7596: $udom = $1;
7597: $unum = $2;
7598: $group = $3;
7599: $file_name = $3.'/'.$4;
7600: }
7601: if (wantarray) {
7602: return ($type,$udom,$unum,$file_name,$group);
7603: }
7604: return $type;
7605: }
7606:
7607: sub is_portfolio_url {
7608: my ($url) = @_;
7609: return scalar(&parse_portfolio_url($url));
7610: }
7611:
7612: sub is_portfolio_file {
7613: my ($file) = @_;
7614: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
7615: return 1;
7616: }
7617: return;
7618: }
7619:
7620: sub usertools_access {
7621: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
7622: my ($access,%tools);
7623: if ($context eq '') {
7624: $context = 'tools';
7625: }
7626: if ($context eq 'requestcourses') {
7627: %tools = (
7628: official => 1,
7629: unofficial => 1,
7630: community => 1,
7631: textbook => 1,
7632: placement => 1,
7633: lti => 1,
7634: );
7635: } elsif ($context eq 'requestauthor') {
7636: %tools = (
7637: requestauthor => 1,
7638: );
7639: } else {
7640: %tools = (
7641: aboutme => 1,
7642: blog => 1,
7643: webdav => 1,
7644: portfolio => 1,
7645: );
7646: }
7647: return if (!defined($tools{$tool}));
7648:
7649: if (($udom eq '') || ($uname eq '')) {
7650: $udom = $env{'user.domain'};
7651: $uname = $env{'user.name'};
7652: }
7653:
7654: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7655: if ($action ne 'reload') {
7656: if ($context eq 'requestcourses') {
7657: return $env{'environment.canrequest.'.$tool};
7658: } elsif ($context eq 'requestauthor') {
7659: return $env{'environment.canrequest.author'};
7660: } else {
7661: return $env{'environment.availabletools.'.$tool};
7662: }
7663: }
7664: }
7665:
7666: my ($toolstatus,$inststatus,$envkey);
7667: if ($context eq 'requestauthor') {
7668: $envkey = $context;
7669: } else {
7670: $envkey = $context.'.'.$tool;
7671: }
7672:
7673: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
7674: ($action ne 'reload')) {
7675: $toolstatus = $env{'environment.'.$envkey};
7676: $inststatus = $env{'environment.inststatus'};
7677: } else {
7678: if (ref($userenvref) eq 'HASH') {
7679: $toolstatus = $userenvref->{$envkey};
7680: $inststatus = $userenvref->{'inststatus'};
7681: } else {
7682: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
7683: $toolstatus = $userenv{$envkey};
7684: $inststatus = $userenv{'inststatus'};
7685: }
7686: }
7687:
7688: if ($toolstatus ne '') {
7689: if ($toolstatus) {
7690: $access = 1;
7691: } else {
7692: $access = 0;
7693: }
7694: return $access;
7695: }
7696:
7697: my ($is_adv,%domdef);
7698: if (ref($is_advref) eq 'HASH') {
7699: $is_adv = $is_advref->{'is_adv'};
7700: } else {
7701: $is_adv = &is_advanced_user($udom,$uname);
7702: }
7703: if (ref($domdefref) eq 'HASH') {
7704: %domdef = %{$domdefref};
7705: } else {
7706: %domdef = &get_domain_defaults($udom);
7707: }
7708: if (ref($domdef{$tool}) eq 'HASH') {
7709: if ($is_adv) {
7710: if ($domdef{$tool}{'_LC_adv'} ne '') {
7711: if ($domdef{$tool}{'_LC_adv'}) {
7712: $access = 1;
7713: } else {
7714: $access = 0;
7715: }
7716: return $access;
7717: }
7718: }
7719: if ($inststatus ne '') {
7720: my ($hasaccess,$hasnoaccess);
7721: foreach my $affiliation (split(/:/,$inststatus)) {
7722: if ($domdef{$tool}{$affiliation} ne '') {
7723: if ($domdef{$tool}{$affiliation}) {
7724: $hasaccess = 1;
7725: } else {
7726: $hasnoaccess = 1;
7727: }
7728: }
7729: }
7730: if ($hasaccess || $hasnoaccess) {
7731: if ($hasaccess) {
7732: $access = 1;
7733: } elsif ($hasnoaccess) {
7734: $access = 0;
7735: }
7736: return $access;
7737: }
7738: } else {
7739: if ($domdef{$tool}{'default'} ne '') {
7740: if ($domdef{$tool}{'default'}) {
7741: $access = 1;
7742: } elsif ($domdef{$tool}{'default'} == 0) {
7743: $access = 0;
7744: }
7745: return $access;
7746: }
7747: }
7748: } else {
7749: if (($context eq 'tools') && ($tool ne 'webdav')) {
7750: $access = 1;
7751: } else {
7752: $access = 0;
7753: }
7754: return $access;
7755: }
7756: }
7757:
7758: sub is_course_owner {
7759: my ($cdom,$cnum,$udom,$uname) = @_;
7760: if (($udom eq '') || ($uname eq '')) {
7761: $udom = $env{'user.domain'};
7762: $uname = $env{'user.name'};
7763: }
7764: unless (($udom eq '') || ($uname eq '')) {
7765: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
7766: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
7767: return 1;
7768: } else {
7769: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
7770: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
7771: return 1;
7772: }
7773: }
7774: }
7775: }
7776: return;
7777: }
7778:
7779: sub is_advanced_user {
7780: my ($udom,$uname) = @_;
7781: if ($udom ne '' && $uname ne '') {
7782: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7783: if (wantarray) {
7784: return ($env{'user.adv'},$env{'user.author'});
7785: } else {
7786: return $env{'user.adv'};
7787: }
7788: }
7789: }
7790: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
7791: my %allroles;
7792: my ($is_adv,$is_author);
7793: foreach my $role (keys(%roleshash)) {
7794: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
7795: my $area = '/'.$tdomain.'/'.$trest;
7796: if ($sec ne '') {
7797: $area .= '/'.$sec;
7798: }
7799: if (($area ne '') && ($trole ne '')) {
7800: my $spec=$trole.'.'.$area;
7801: if ($trole =~ /^cr\//) {
7802: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
7803: } elsif ($trole ne 'gr') {
7804: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
7805: }
7806: if ($trole eq 'au') {
7807: $is_author = 1;
7808: }
7809: }
7810: }
7811: foreach my $role (keys(%allroles)) {
7812: last if ($is_adv);
7813: foreach my $item (split(/:/,$allroles{$role})) {
7814: if ($item ne '') {
7815: my ($privilege,$restrictions)=split(/&/,$item);
7816: if ($privilege eq 'adv') {
7817: $is_adv = 1;
7818: last;
7819: }
7820: }
7821: }
7822: }
7823: if (wantarray) {
7824: return ($is_adv,$is_author);
7825: }
7826: return $is_adv;
7827: }
7828:
7829: sub check_can_request {
7830: my ($dom,$can_request,$request_domains,$uname,$udom) = @_;
7831: my $canreq = 0;
7832: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
7833: $uname = $env{'user.name'};
7834: $udom = $env{'user.domain'};
7835: }
7836: my ($types,$typename) = &Apache::loncommon::course_types();
7837: my @options = ('approval','validate','autolimit');
7838: my $optregex = join('|',@options);
7839: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
7840: foreach my $type (@{$types}) {
7841: if (&usertools_access($uname,$udom,$type,undef,
7842: 'requestcourses')) {
7843: $canreq ++;
7844: if (ref($request_domains) eq 'HASH') {
7845: push(@{$request_domains->{$type}},$udom);
7846: }
7847: if ($dom eq $udom) {
7848: $can_request->{$type} = 1;
7849: }
7850: }
7851: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '') &&
7852: ($env{'environment.reqcrsotherdom.'.$type} ne '')) {
7853: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
7854: if (@curr > 0) {
7855: foreach my $item (@curr) {
7856: if (ref($request_domains) eq 'HASH') {
7857: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
7858: if ($otherdom ne '') {
7859: if (ref($request_domains->{$type}) eq 'ARRAY') {
7860: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
7861: push(@{$request_domains->{$type}},$otherdom);
7862: }
7863: } else {
7864: push(@{$request_domains->{$type}},$otherdom);
7865: }
7866: }
7867: }
7868: }
7869: unless ($dom eq $env{'user.domain'}) {
7870: $canreq ++;
7871: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
7872: $can_request->{$type} = 1;
7873: }
7874: }
7875: }
7876: }
7877: }
7878: }
7879: return $canreq;
7880: }
7881:
7882: # ---------------------------------------------- Custom access rule evaluation
7883:
7884: sub customaccess {
7885: my ($priv,$uri)=@_;
7886: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
7887: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
7888: $udom = &LONCAPA::clean_domain($udom);
7889: $ucrs = &LONCAPA::clean_username($ucrs);
7890: my $access=0;
7891: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
7892: my ($effect,$realm,$role,$type)=split(/\:/,$right);
7893: if ($type eq 'user') {
7894: foreach my $scope (split(/\s*\,\s*/,$realm)) {
7895: my ($tdom,$tuname)=split(m{/},$scope);
7896: if ($tdom) {
7897: if ($tdom ne $env{'user.domain'}) { next; }
7898: }
7899: if ($tuname) {
7900: if ($tuname ne $env{'user.name'}) { next; }
7901: }
7902: $access=($effect eq 'allow');
7903: last;
7904: }
7905: } else {
7906: if ($role) {
7907: if ($role ne $urole) { next; }
7908: }
7909: foreach my $scope (split(/\s*\,\s*/,$realm)) {
7910: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
7911: if ($tdom) {
7912: if ($tdom ne $udom) { next; }
7913: }
7914: if ($tcrs) {
7915: if ($tcrs ne $ucrs) { next; }
7916: }
7917: if ($tsec) {
7918: if ($tsec ne $usec) { next; }
7919: }
7920: $access=($effect eq 'allow');
7921: last;
7922: }
7923: if ($realm eq '' && $role eq '') {
7924: $access=($effect eq 'allow');
7925: }
7926: }
7927: }
7928: return $access;
7929: }
7930:
7931: # ------------------------------------------------- Check for a user privilege
7932:
7933: sub allowed {
7934: my ($priv,$uri,$symb,$role,$clientip,$noblockcheck)=@_;
7935: my $ver_orguri=$uri;
7936: $uri=&deversion($uri);
7937: my $orguri=$uri;
7938: $uri=&declutter($uri);
7939:
7940: if ($priv eq 'evb') {
7941: # Evade communication block restrictions for specified role in a course
7942: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
7943: return $1;
7944: } else {
7945: return;
7946: }
7947: }
7948:
7949: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
7950: # Free bre access to adm and meta resources
7951: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard|ext\.tool)$}))
7952: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
7953: && ($priv eq 'bre')) {
7954: return 'F';
7955: }
7956:
7957: # Free bre access to user's own portfolio contents
7958: my ($space,$domain,$name,@dir)=split('/',$uri);
7959: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
7960: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
7961: my %setters;
7962: my ($startblock,$endblock) =
7963: &Apache::loncommon::blockcheck(\%setters,'port');
7964: if ($startblock && $endblock) {
7965: return 'B';
7966: } else {
7967: return 'F';
7968: }
7969: }
7970:
7971: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
7972: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
7973: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
7974: if (exists($env{'request.course.id'})) {
7975: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7976: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7977: if (($domain eq $cdom) && ($name eq $cnum)) {
7978: my $courseprivid=$env{'request.course.id'};
7979: $courseprivid=~s/\_/\//;
7980: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
7981: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
7982: return $1;
7983: } else {
7984: if ($env{'request.course.sec'}) {
7985: $courseprivid.='/'.$env{'request.course.sec'};
7986: }
7987: if ($env{'user.priv.'.$env{'request.role'}.'./'.
7988: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
7989: return $2;
7990: }
7991: }
7992: }
7993: }
7994: }
7995:
7996: # Free bre to public access
7997:
7998: if ($priv eq 'bre') {
7999: my $copyright;
8000: unless ($uri =~ /ext\.tool/) {
8001: $copyright=&metadata($uri,'copyright');
8002: }
8003: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
8004: return 'F';
8005: }
8006: if ($copyright eq 'priv') {
8007: $uri=~/([^\/]+)\/([^\/]+)\//;
8008: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
8009: return '';
8010: }
8011: }
8012: if ($copyright eq 'domain') {
8013: $uri=~/([^\/]+)\/([^\/]+)\//;
8014: unless (($env{'user.domain'} eq $1) ||
8015: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
8016: return '';
8017: }
8018: }
8019: if ($env{'request.role'}=~ /li\.\//) {
8020: # Library role, so allow browsing of resources in this domain.
8021: return 'F';
8022: }
8023: if ($copyright eq 'custom') {
8024: unless (&customaccess($priv,$uri)) { return ''; }
8025: }
8026: }
8027: # Domain coordinator is trying to create a course
8028: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
8029: # uri is the requested domain in this case.
8030: # comparison to 'request.role.domain' shows if the user has selected
8031: # a role of dc for the domain in question.
8032: return 'F' if ($uri eq $env{'request.role.domain'});
8033: }
8034:
8035: my $thisallowed='';
8036: my $statecond=0;
8037: my $courseprivid='';
8038:
8039: my $ownaccess;
8040: # Community Coordinator or Assistant Co-author browsing resource space.
8041: if (($priv eq 'bro') && ($env{'user.author'})) {
8042: if ($uri eq '') {
8043: $ownaccess = 1;
8044: } else {
8045: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
8046: my $udom = $env{'user.domain'};
8047: my $uname = $env{'user.name'};
8048: if ($uri =~ m{^\Q$udom\E/?$}) {
8049: $ownaccess = 1;
8050: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
8051: unless ($uri =~ m{\.\./}) {
8052: $ownaccess = 1;
8053: }
8054: } elsif (($udom ne 'public') && ($uname ne 'public')) {
8055: my $now = time;
8056: if ($uri =~ m{^([^/]+)/?$}) {
8057: my $adom = $1;
8058: foreach my $key (keys(%env)) {
8059: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
8060: my ($start,$end) = split('.',$env{$key});
8061: if (($now >= $start) && (!$end || $end < $now)) {
8062: $ownaccess = 1;
8063: last;
8064: }
8065: }
8066: }
8067: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
8068: my $adom = $1;
8069: my $aname = $2;
8070: foreach my $role ('ca','aa') {
8071: if ($env{"user.role.$role./$adom/$aname"}) {
8072: my ($start,$end) =
8073: split('.',$env{"user.role.$role./$adom/$aname"});
8074: if (($now >= $start) && (!$end || $end < $now)) {
8075: $ownaccess = 1;
8076: last;
8077: }
8078: }
8079: }
8080: }
8081: }
8082: }
8083: }
8084: }
8085:
8086: # Course
8087:
8088: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
8089: unless (($priv eq 'bro') && (!$ownaccess)) {
8090: $thisallowed.=$1;
8091: }
8092: }
8093:
8094: # Domain
8095:
8096: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
8097: =~/\Q$priv\E\&([^\:]*)/) {
8098: unless (($priv eq 'bro') && (!$ownaccess)) {
8099: $thisallowed.=$1;
8100: }
8101: }
8102:
8103: # User who is not author or co-author might still be able to edit
8104: # resource of an author in the domain (e.g., if Domain Coordinator).
8105: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
8106: (&allowed('mdc',$env{'request.course.id'}))) {
8107: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
8108: $thisallowed.=$1;
8109: }
8110: }
8111:
8112: # Course: uri itself is a course
8113: my $courseuri=$uri;
8114: $courseuri=~s/\_(\d)/\/$1/;
8115: $courseuri=~s/^([^\/])/\/$1/;
8116:
8117: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
8118: =~/\Q$priv\E\&([^\:]*)/) {
8119: if ($priv eq 'mip') {
8120: my $rem = $1;
8121: if (($uri ne '') && ($env{'request.course.id'} eq $uri) &&
8122: ($env{'course.'.$env{'request.course.id'}.'.internal.courseowner'} eq $env{'user.name'}.':'.$env{'user.domain'})) {
8123: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8124: if ($cdom ne '') {
8125: my %passwdconf = &get_passwdconf($cdom);
8126: if (ref($passwdconf{'crsownerchg'}) eq 'HASH') {
8127: if (ref($passwdconf{'crsownerchg'}{'by'}) eq 'ARRAY') {
8128: if (@{$passwdconf{'crsownerchg'}{'by'}}) {
8129: my @inststatuses = split(':',$env{'environment.inststatus'});
8130: unless (@inststatuses) {
8131: @inststatuses = ('default');
8132: }
8133: foreach my $status (@inststatuses) {
8134: if (grep(/^\Q$status\E$/,@{$passwdconf{'crsownerchg'}{'by'}})) {
8135: $thisallowed.=$rem;
8136: }
8137: }
8138: }
8139: }
8140: }
8141: }
8142: }
8143: } else {
8144: unless (($priv eq 'bro') && (!$ownaccess)) {
8145: $thisallowed.=$1;
8146: }
8147: }
8148: }
8149:
8150: # URI is an uploaded document for this course, default permissions don't matter
8151: # not allowing 'edit' access (editupload) to uploaded course docs
8152: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
8153: $thisallowed='';
8154: my ($match)=&is_on_map($uri);
8155: if ($match) {
8156: if ($env{'user.priv.'.$env{'request.role'}.'./'}
8157: =~/\Q$priv\E\&([^\:]*)/) {
8158: my $value = $1;
8159: my $deeplinkblock = &deeplink_check($priv,$symb,$uri);
8160: if ($deeplinkblock) {
8161: $thisallowed='D';
8162: } elsif ($noblockcheck) {
8163: $thisallowed.=$value;
8164: } else {
8165: my @blockers = &has_comm_blocking($priv,$symb,$uri);
8166: if (@blockers > 0) {
8167: $thisallowed = 'B';
8168: } else {
8169: $thisallowed.=$value;
8170: }
8171: }
8172: }
8173: } else {
8174: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
8175: if ($refuri) {
8176: if ($refuri =~ m|^/adm/|) {
8177: $thisallowed='F';
8178: } else {
8179: $refuri=&declutter($refuri);
8180: my ($match) = &is_on_map($refuri);
8181: if ($match) {
8182: my $deeplinkblock = &deeplink_check($priv,$symb,$refuri);
8183: if ($deeplinkblock) {
8184: $thisallowed='D';
8185: } elsif ($noblockcheck) {
8186: $thisallowed='F';
8187: } else {
8188: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
8189: if (@blockers > 0) {
8190: $thisallowed = 'B';
8191: } else {
8192: $thisallowed='F';
8193: }
8194: }
8195: }
8196: }
8197: }
8198: }
8199: }
8200:
8201: if ($priv eq 'bre'
8202: && $thisallowed ne 'F'
8203: && $thisallowed ne '2'
8204: && &is_portfolio_url($uri)) {
8205: $thisallowed = &portfolio_access($uri,$clientip);
8206: }
8207:
8208: # Full access at system, domain or course-wide level? Exit.
8209: if ($thisallowed=~/F/) {
8210: return 'F';
8211: }
8212:
8213: # If this is generating or modifying users, exit with special codes
8214:
8215: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
8216: if (($priv eq 'cca') || ($priv eq 'caa')) {
8217: my ($audom,$auname)=split('/',$uri);
8218: # no author name given, so this just checks on the general right to make a co-author in this domain
8219: unless ($auname) { return $thisallowed; }
8220: # an author name is given, so we are about to actually make a co-author for a certain account
8221: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
8222: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
8223: ($audom ne $env{'request.role.domain'}))) { return ''; }
8224: }
8225: return $thisallowed;
8226: }
8227: #
8228: # Gathered so far: system, domain and course wide privileges
8229: #
8230: # Course: See if uri or referer is an individual resource that is part of
8231: # the course
8232:
8233: if ($env{'request.course.id'}) {
8234:
8235: # If this is modifying password (internal auth) domains must match for user and user's role.
8236:
8237: if ($priv eq 'mip') {
8238: if ($env{'user.domain'} eq $env{'request.role.domain'}) {
8239: return $thisallowed;
8240: } else {
8241: return '';
8242: }
8243: }
8244:
8245: $courseprivid=$env{'request.course.id'};
8246: if ($env{'request.course.sec'}) {
8247: $courseprivid.='/'.$env{'request.course.sec'};
8248: }
8249: $courseprivid=~s/\_/\//;
8250: my $checkreferer=1;
8251: my ($match,$cond)=&is_on_map($uri);
8252: if ($match) {
8253: $statecond=$cond;
8254: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
8255: =~/\Q$priv\E\&([^\:]*)/) {
8256: my $value = $1;
8257: if ($priv eq 'bre') {
8258: if ($noblockcheck) {
8259: $thisallowed.=$value;
8260: } else {
8261: my @blockers = &has_comm_blocking($priv,$symb,$uri);
8262: if (@blockers > 0) {
8263: $thisallowed = 'B';
8264: } else {
8265: $thisallowed.=$value;
8266: }
8267: }
8268: } else {
8269: $thisallowed.=$value;
8270: }
8271: $checkreferer=0;
8272: }
8273: }
8274:
8275: if ($checkreferer) {
8276: my $refuri=$env{'httpref.'.$orguri};
8277: unless ($refuri) {
8278: foreach my $key (keys(%env)) {
8279: if ($key=~/^httpref\..*\*/) {
8280: my $pattern=$key;
8281: $pattern=~s/^httpref\.\/res\///;
8282: $pattern=~s/\*/\[\^\/\]\+/g;
8283: $pattern=~s/\//\\\//g;
8284: if ($orguri=~/$pattern/) {
8285: $refuri=$env{$key};
8286: }
8287: }
8288: }
8289: }
8290:
8291: if ($refuri) {
8292: $refuri=&declutter($refuri);
8293: my ($match,$cond)=&is_on_map($refuri);
8294: if ($match) {
8295: my $refstatecond=$cond;
8296: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
8297: =~/\Q$priv\E\&([^\:]*)/) {
8298: my $value = $1;
8299: if ($priv eq 'bre') {
8300: my $deeplinkblock = &deeplink_check($priv,$symb,$refuri);
8301: if ($deeplinkblock) {
8302: $thisallowed = 'D';
8303: } elsif ($noblockcheck) {
8304: $thisallowed.=$value;
8305: } else {
8306: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
8307: if (@blockers > 0) {
8308: $thisallowed = 'B';
8309: } else {
8310: $thisallowed.=$value;
8311: }
8312: }
8313: } else {
8314: $thisallowed.=$value;
8315: }
8316: $uri=$refuri;
8317: $statecond=$refstatecond;
8318: }
8319: }
8320: }
8321: }
8322: }
8323:
8324: #
8325: # Gathered now: all privileges that could apply, and condition number
8326: #
8327: #
8328: # Full or no access?
8329: #
8330:
8331: if ($thisallowed=~/F/) {
8332: return 'F';
8333: }
8334:
8335: unless ($thisallowed) {
8336: return '';
8337: }
8338:
8339: # Restrictions exist, deal with them
8340: #
8341: # C:according to course preferences
8342: # R:according to resource settings
8343: # L:unless locked
8344: # X:according to user session state
8345: #
8346:
8347: # Possibly locked functionality, check all courses
8348: # Locks might take effect only after 10 minutes cache expiration for other
8349: # courses, and 2 minutes for current course
8350:
8351: my $envkey;
8352: if ($thisallowed=~/L/) {
8353: foreach $envkey (keys(%env)) {
8354: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
8355: my $courseid=$2;
8356: my $roleid=$1.'.'.$2;
8357: $courseid=~s/^\///;
8358: my $expiretime=600;
8359: if ($env{'request.role'} eq $roleid) {
8360: $expiretime=120;
8361: }
8362: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
8363: my $prefix='course.'.$cdom.'_'.$cnum.'.';
8364: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
8365: &coursedescription($courseid,{'freshen_cache' => 1});
8366: }
8367: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
8368: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
8369: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
8370: &log($env{'user.domain'},$env{'user.name'},
8371: $env{'user.home'},
8372: 'Locked by res: '.$priv.' for '.$uri.' due to '.
8373: $cdom.'/'.$cnum.'/'.$csec.' expire '.
8374: $env{$prefix.'priv.'.$priv.'.lock.expire'});
8375: return '';
8376: }
8377: }
8378: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
8379: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
8380: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
8381: &log($env{'user.domain'},$env{'user.name'},
8382: $env{'user.home'},
8383: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
8384: $cdom.'/'.$cnum.'/'.$csec.' expire '.
8385: $env{$prefix.'priv.'.$priv.'.lock.expire'});
8386: return '';
8387: }
8388: }
8389: }
8390: }
8391: }
8392:
8393: #
8394: # Rest of the restrictions depend on selected course
8395: #
8396:
8397: unless ($env{'request.course.id'}) {
8398: if ($thisallowed eq 'A') {
8399: return 'A';
8400: } elsif ($thisallowed eq 'B') {
8401: return 'B';
8402: } else {
8403: return '1';
8404: }
8405: }
8406:
8407: #
8408: # Now user is definitely in a course
8409: #
8410:
8411:
8412: # Course preferences
8413:
8414: if ($thisallowed=~/C/) {
8415: my $rolecode=(split(/\./,$env{'request.role'}))[0];
8416: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
8417: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
8418: =~/\Q$rolecode\E/) {
8419: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
8420: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
8421: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
8422: $env{'request.course.id'});
8423: }
8424: return '';
8425: }
8426:
8427: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
8428: =~/\Q$unamedom\E/) {
8429: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
8430: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
8431: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
8432: $env{'request.course.id'});
8433: }
8434: return '';
8435: }
8436: }
8437:
8438: # Resource preferences
8439:
8440: if ($thisallowed=~/R/) {
8441: my $rolecode=(split(/\./,$env{'request.role'}))[0];
8442: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
8443: if (($priv ne 'pch') && ($priv ne 'plc')) {
8444: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
8445: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
8446: }
8447: return '';
8448: }
8449: }
8450:
8451: # Restricted by state or randomout?
8452:
8453: if ($thisallowed=~/X/) {
8454: if ($env{'acc.randomout'}) {
8455: if (!$symb) { $symb=&symbread($uri,1); }
8456: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
8457: return '';
8458: }
8459: }
8460: if (&condval($statecond)) {
8461: return '2';
8462: } else {
8463: return '';
8464: }
8465: }
8466:
8467: if ($thisallowed eq 'A') {
8468: return 'A';
8469: } elsif ($thisallowed eq 'B') {
8470: return 'B';
8471: } elsif ($thisallowed eq 'D') {
8472: return 'D';
8473: }
8474: return 'F';
8475: }
8476:
8477: # ------------------------------------------- Check construction space access
8478:
8479: sub constructaccess {
8480: my ($url,$setpriv)=@_;
8481:
8482: # We do not allow editing of previous versions of files
8483: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
8484:
8485: # Get username and domain from URL
8486: my ($ownername,$ownerdomain,$ownerhome);
8487:
8488: ($ownerdomain,$ownername) =
8489: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)(?:/daxepage|/daxeopen)?/priv/($match_domain)/($match_username)(?:/|$)});
8490:
8491: # The URL does not really point to any authorspace, forget it
8492: unless (($ownername) && ($ownerdomain)) { return ''; }
8493:
8494: # Now we need to see if the user has access to the authorspace of
8495: # $ownername at $ownerdomain
8496:
8497: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
8498: # Real author for this?
8499: $ownerhome = $env{'user.home'};
8500: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
8501: return ($ownername,$ownerdomain,$ownerhome);
8502: }
8503: } else {
8504: # Co-author for this?
8505: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
8506: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
8507: $ownerhome = &homeserver($ownername,$ownerdomain);
8508: return ($ownername,$ownerdomain,$ownerhome);
8509: }
8510: if ($env{'request.course.id'}) {
8511: if (($ownername eq $env{'course.'.$env{'request.course.id'}.'.num'}) &&
8512: ($ownerdomain eq $env{'course.'.$env{'request.course.id'}.'.domain'})) {
8513: if (&allowed('mdc',$env{'request.course.id'})) {
8514: $ownerhome = $env{'course.'.$env{'request.course.id'}.'.home'};
8515: return ($ownername,$ownerdomain,$ownerhome);
8516: }
8517: }
8518: }
8519: }
8520:
8521: # We don't have any access right now. If we are not possibly going to do anything about this,
8522: # we might as well leave
8523: unless ($setpriv) { return ''; }
8524:
8525: # Backdoor access?
8526: my $allowed=&allowed('eco',$ownerdomain);
8527: # Nope
8528: unless ($allowed) { return ''; }
8529: # Looks like we may have access, but could be locked by the owner of the construction space
8530: if ($allowed eq 'U') {
8531: my %blocked=&get('environment',['domcoord.author'],
8532: $ownerdomain,$ownername);
8533: # Is blocked by owner
8534: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
8535: }
8536: if (($allowed eq 'F') || ($allowed eq 'U')) {
8537: # Grant temporary access
8538: my $then=$env{'user.login.time'};
8539: my $update=$env{'user.update.time'};
8540: if (!$update) { $update = $then; }
8541: my $refresh=$env{'user.refresh.time'};
8542: if (!$refresh) { $refresh = $update; }
8543: my $now = time;
8544: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
8545: $now,'ca','constructaccess');
8546: $ownerhome = &homeserver($ownername,$ownerdomain);
8547: return($ownername,$ownerdomain,$ownerhome);
8548: }
8549: # No business here
8550: return '';
8551: }
8552:
8553: # ----------------------------------------------------------- Content Blocking
8554:
8555: {
8556: # Caches for faster Course Contents display where content blocking
8557: # is in operation (i.e., interval param set) for timed quiz.
8558: #
8559: # User for whom data are being temporarily cached.
8560: my $cacheduser='';
8561: # Cached blockers for this user (a hash of blocking items).
8562: my %cachedblockers=();
8563: # When the data were last cached.
8564: my $cachedlast='';
8565:
8566: sub load_all_blockers {
8567: my ($uname,$udom,$blocks)=@_;
8568: if (($uname ne '') && ($udom ne '')) {
8569: if (($cacheduser eq $uname.':'.$udom) &&
8570: (abs($cachedlast-time)<5)) {
8571: return;
8572: }
8573: }
8574: $cachedlast=time;
8575: $cacheduser=$uname.':'.$udom;
8576: %cachedblockers = &get_commblock_resources($blocks);
8577: }
8578:
8579: sub get_comm_blocks {
8580: my ($cdom,$cnum) = @_;
8581: if ($cdom eq '' || $cnum eq '') {
8582: return unless ($env{'request.course.id'});
8583: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
8584: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8585: }
8586: my %commblocks;
8587: my $hashid=$cdom.'_'.$cnum;
8588: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
8589: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
8590: %commblocks = %{$blocksref};
8591: } else {
8592: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
8593: my $cachetime = 600;
8594: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
8595: }
8596: return %commblocks;
8597: }
8598:
8599: sub get_commblock_resources {
8600: my ($blocks) = @_;
8601: my %blockers = ();
8602: return %blockers unless ($env{'request.course.id'});
8603: return %blockers if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
8604: my %commblocks;
8605: if (ref($blocks) eq 'HASH') {
8606: %commblocks = %{$blocks};
8607: } else {
8608: %commblocks = &get_comm_blocks();
8609: }
8610: return %blockers unless (keys(%commblocks) > 0);
8611: my $navmap = Apache::lonnavmaps::navmap->new();
8612: return %blockers unless (ref($navmap));
8613: my $now = time;
8614: foreach my $block (keys(%commblocks)) {
8615: if ($block =~ /^(\d+)____(\d+)$/) {
8616: my ($start,$end) = ($1,$2);
8617: if ($start <= $now && $end >= $now) {
8618: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
8619: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
8620: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
8621: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
8622: $blockers{$block}{maps} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
8623: }
8624: }
8625: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
8626: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
8627: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
8628: }
8629: }
8630: }
8631: }
8632: }
8633: } elsif ($block =~ /^firstaccess____(.+)$/) {
8634: my $item = $1;
8635: my @to_test;
8636: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
8637: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
8638: my @interval;
8639: my $type = 'map';
8640: if ($item eq 'course') {
8641: $type = 'course';
8642: @interval=&EXT("resource.0.interval");
8643: } else {
8644: if ($item =~ /___\d+___/) {
8645: $type = 'resource';
8646: @interval=&EXT("resource.0.interval",$item);
8647: if (ref($navmap)) {
8648: my $res = $navmap->getBySymb($item);
8649: push(@to_test,$res);
8650: }
8651: } else {
8652: my $mapsymb = &symbread($item,1);
8653: if ($mapsymb) {
8654: if (ref($navmap)) {
8655: my $mapres = $navmap->getBySymb($mapsymb);
8656: @to_test = $mapres->retrieveResources($mapres,undef,0,0,0,1);
8657: foreach my $res (@to_test) {
8658: my $symb = $res->symb();
8659: next if ($symb eq $mapsymb);
8660: if ($symb ne '') {
8661: @interval=&EXT("resource.0.interval",$symb);
8662: if ($interval[1] eq 'map') {
8663: last;
8664: }
8665: }
8666: }
8667: }
8668: }
8669: }
8670: }
8671: if ($interval[0] =~ /^(\d+)/) {
8672: my $timelimit = $1;
8673: my $first_access;
8674: if ($type eq 'resource') {
8675: $first_access=&get_first_access($interval[1],$item);
8676: } elsif ($type eq 'map') {
8677: $first_access=&get_first_access($interval[1],undef,$item);
8678: } else {
8679: $first_access=&get_first_access($interval[1]);
8680: }
8681: if ($first_access) {
8682: my $timesup = $first_access+$timelimit;
8683: if ($timesup > $now) {
8684: my $activeblock;
8685: foreach my $res (@to_test) {
8686: if ($res->answerable()) {
8687: $activeblock = 1;
8688: last;
8689: }
8690: }
8691: if ($activeblock) {
8692: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
8693: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
8694: $blockers{$block}{'maps'} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
8695: }
8696: }
8697: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
8698: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
8699: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
8700: }
8701: }
8702: }
8703: }
8704: }
8705: }
8706: }
8707: }
8708: }
8709: }
8710: return %blockers;
8711: }
8712:
8713: sub has_comm_blocking {
8714: my ($priv,$symb,$uri,$blocks) = @_;
8715: my @blockers;
8716: return unless ($env{'request.course.id'});
8717: return unless ($priv eq 'bre');
8718: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
8719: return if ($env{'request.state'} eq 'construct');
8720: &load_all_blockers($env{'user.name'},$env{'user.domain'},$blocks);
8721: return unless (keys(%cachedblockers) > 0);
8722: my (%possibles,@symbs);
8723: if (!$symb) {
8724: $symb = &symbread($uri,1,1,1,\%possibles);
8725: }
8726: if ($symb) {
8727: @symbs = ($symb);
8728: } elsif (keys(%possibles)) {
8729: @symbs = keys(%possibles);
8730: }
8731: my $noblock;
8732: foreach my $symb (@symbs) {
8733: last if ($noblock);
8734: my ($map,$resid,$resurl)=&decode_symb($symb);
8735: foreach my $block (keys(%cachedblockers)) {
8736: if ($block =~ /^firstaccess____(.+)$/) {
8737: my $item = $1;
8738: if (($item eq $map) || ($item eq $symb)) {
8739: $noblock = 1;
8740: last;
8741: }
8742: }
8743: if (ref($cachedblockers{$block}) eq 'HASH') {
8744: if (ref($cachedblockers{$block}{'resources'}) eq 'HASH') {
8745: if ($cachedblockers{$block}{'resources'}{$symb}) {
8746: unless (grep(/^\Q$block\E$/,@blockers)) {
8747: push(@blockers,$block);
8748: }
8749: }
8750: }
8751: }
8752: if (ref($cachedblockers{$block}{'maps'}) eq 'HASH') {
8753: if ($cachedblockers{$block}{'maps'}{$map}) {
8754: unless (grep(/^\Q$block\E$/,@blockers)) {
8755: push(@blockers,$block);
8756: }
8757: }
8758: }
8759: }
8760: }
8761: return if ($noblock);
8762: return @blockers;
8763: }
8764: }
8765:
8766: sub deeplink_check {
8767: my ($priv,$symb,$uri) = @_;
8768: return unless ($env{'request.course.id'});
8769: return unless ($priv eq 'bre');
8770: return if ($env{'request.state'} eq 'construct');
8771: return if ($env{'request.role.adv'});
8772: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8773: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
8774: my (%possibles,@symbs);
8775: if (!$symb) {
8776: $symb = &symbread($uri,1,1,1,\%possibles);
8777: }
8778: if ($symb) {
8779: @symbs = ($symb);
8780: } elsif (keys(%possibles)) {
8781: @symbs = keys(%possibles);
8782: }
8783:
8784: my ($login,$switchrole,$allow);
8785: if ($env{'request.deeplink.login'} =~ m{^\Q/tiny/$cdom/\E(\w+)$}) {
8786: my $key = $1;
8787: my $tinyurl;
8788: my ($result,$cached)=&Apache::lonnet::is_cached_new('tiny',$cdom."\0".$key);
8789: if (defined($cached)) {
8790: $tinyurl = $result;
8791: } else {
8792: my $configuname = &Apache::lonnet::get_domainconfiguser($cdom);
8793: my %currtiny = &Apache::lonnet::get('tiny',[$key],$cdom,$configuname);
8794: if ($currtiny{$key} ne '') {
8795: $tinyurl = $currtiny{$key};
8796: &Apache::lonnet::do_cache_new('tiny',$cdom."\0".$key,$currtiny{$key},600);
8797: }
8798: }
8799: if ($tinyurl ne '') {
8800: my ($cnumreq,$posslogin) = split(/\&/,$tinyurl);
8801: if ($cnumreq eq $cnum) {
8802: $login = $posslogin;
8803: } else {
8804: $switchrole = 1;
8805: }
8806: }
8807: }
8808: foreach my $symb (@symbs) {
8809: last if ($allow);
8810: my $deeplink = &EXT("resource.0.deeplink",$symb);
8811: if ($deeplink eq '') {
8812: $allow = 1;
8813: } else {
8814: my ($listed,$scope,$access) = split(/,/,$deeplink);
8815: if ($access eq 'any') {
8816: $allow = 1;
8817: } elsif ($login) {
8818: if ($access eq 'only') {
8819: if ($scope eq 'res') {
8820: if ($symb eq $login) {
8821: $allow = 1;
8822: }
8823: } elsif ($scope eq 'map') {
8824: #FIXME Compare map for $env{'request.deeplink.login'} with map for $symb
8825: } elsif ($scope eq 'rec') {
8826: #FIXME Recurse up for $env{'request.deeplink.login'} with map for $symb
8827: }
8828: } else {
8829: my ($acctype,$item) = split(/:/,$access);
8830: if (($acctype eq 'lti') && ($env{'user.linkprotector'})) {
8831: if (grep(/^\Q$item\E$/,split(/,/,$env{'user.linkprotector'}))) {
8832: my %tinyurls = &get('tiny',[$symb],$cdom,$cnum);
8833: if (grep(/\Q$tinyurls{$symb}\E$/,split(/,/,$env{'user.linkproturis'}))) {
8834: $allow = 1;
8835: }
8836: }
8837: } elsif (($acctype eq 'key') && ($env{'user.deeplinkkey'})) {
8838: if (grep(/^\Q$item\E$/,split(/,/,$env{'user.deeplinkkey'}))) {
8839: my %tinyurls = &get('tiny',[$symb],$cdom,$cnum);
8840: if (grep(/\Q$tinyurls{$symb}\E$/,split(/,/,$env{'user.keyedlinkuri'}))) {
8841: $allow = 1;
8842: }
8843: }
8844: }
8845: }
8846: }
8847: }
8848: }
8849: return if ($allow);
8850: return 1;
8851: }
8852:
8853: # -------------------------------- Deversion and split uri into path an filename
8854:
8855: #
8856: # Removes the version from a URI and
8857: # splits it in to its filename and path to the filename.
8858: # Seems like File::Basename could have done this more clearly.
8859: # Parameters:
8860: # $uri - input URI
8861: # Returns:
8862: # Two element list consisting of
8863: # $pathname - the URI up to and excluding the trailing /
8864: # $filename - The part of the URI following the last /
8865: # NOTE:
8866: # Another realization of this is simply:
8867: # use File::Basename;
8868: # ...
8869: # $uri = shift;
8870: # $filename = basename($uri);
8871: # $path = dirname($uri);
8872: # return ($filename, $path);
8873: #
8874: # The implementation below is probably faster however.
8875: #
8876: sub split_uri_for_cond {
8877: my $uri=&deversion(&declutter(shift));
8878: my @uriparts=split(/\//,$uri);
8879: my $filename=pop(@uriparts);
8880: my $pathname=join('/',@uriparts);
8881: return ($pathname,$filename);
8882: }
8883: # --------------------------------------------------- Is a resource on the map?
8884:
8885: sub is_on_map {
8886: my ($pathname,$filename) = &split_uri_for_cond(shift);
8887: #Trying to find the conditional for the file
8888: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
8889: /\&\Q$filename\E\:([\d\|]+)\&/);
8890: if ($match) {
8891: return (1,$1);
8892: } else {
8893: return (0,0);
8894: }
8895: }
8896:
8897: # --------------------------------------------------------- Get symb from alias
8898:
8899: sub get_symb_from_alias {
8900: my $symb=shift;
8901: my ($map,$resid,$url)=&decode_symb($symb);
8902: # Already is a symb
8903: if ($url) { return $symb; }
8904: # Must be an alias
8905: my $aliassymb='';
8906: my %bighash;
8907: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8908: &GDBM_READER(),0640)) {
8909: my $rid=$bighash{'mapalias_'.$symb};
8910: if ($rid) {
8911: my ($mapid,$resid)=split(/\./,$rid);
8912: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
8913: $resid,$bighash{'src_'.$rid});
8914: }
8915: untie %bighash;
8916: }
8917: return $aliassymb;
8918: }
8919:
8920: # ----------------------------------------------------------------- Define Role
8921:
8922: sub definerole {
8923: if (allowed('mcr','/')) {
8924: my ($rolename,$sysrole,$domrole,$courole,$uname,$udom)=@_;
8925: foreach my $role (split(':',$sysrole)) {
8926: my ($crole,$cqual)=split(/\&/,$role);
8927: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
8928: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
8929: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
8930: return "refused:s:$crole&$cqual";
8931: }
8932: }
8933: }
8934: foreach my $role (split(':',$domrole)) {
8935: my ($crole,$cqual)=split(/\&/,$role);
8936: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
8937: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
8938: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
8939: return "refused:d:$crole&$cqual";
8940: }
8941: }
8942: }
8943: foreach my $role (split(':',$courole)) {
8944: my ($crole,$cqual)=split(/\&/,$role);
8945: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
8946: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
8947: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
8948: return "refused:c:$crole&$cqual";
8949: }
8950: }
8951: }
8952: my $uhome;
8953: if (($uname ne '') && ($udom ne '')) {
8954: $uhome = &homeserver($uname,$udom);
8955: return $uhome if ($uhome eq 'no_host');
8956: } else {
8957: $uname = $env{'user.name'};
8958: $udom = $env{'user.domain'};
8959: $uhome = $env{'user.home'};
8960: }
8961: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
8962: "$udom:$uname:rolesdef_$rolename=".
8963: escape($sysrole.'_'.$domrole.'_'.$courole);
8964: return reply($command,$uhome);
8965: } else {
8966: return 'refused';
8967: }
8968: }
8969:
8970: # ---------------- Make a metadata query against the network of library servers
8971:
8972: sub metadata_query {
8973: my ($query,$custom,$customshow,$server_array,$domains_hash)=@_;
8974: my %rhash;
8975: my %libserv = &all_library();
8976: my @server_list = (defined($server_array) ? @$server_array
8977: : keys(%libserv) );
8978: for my $server (@server_list) {
8979: my $domains = '';
8980: if (ref($domains_hash) eq 'HASH') {
8981: $domains = $domains_hash->{$server};
8982: }
8983: unless ($custom or $customshow) {
8984: my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server);
8985: $rhash{$server}=$reply;
8986: }
8987: else {
8988: my $reply=&reply("querysend:".&escape($query).':'.
8989: &escape($custom).':'.&escape($customshow).':'.&escape($domains),
8990: $server);
8991: $rhash{$server}=$reply;
8992: }
8993: }
8994: return \%rhash;
8995: }
8996:
8997: # ----------------------------------------- Send log queries and wait for reply
8998:
8999: sub log_query {
9000: my ($uname,$udom,$query,%filters)=@_;
9001: my $uhome=&homeserver($uname,$udom);
9002: if ($uhome eq 'no_host') { return 'error: no_host'; }
9003: my $uhost=&hostname($uhome);
9004: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
9005: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
9006: $uhome);
9007: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
9008: return get_query_reply($queryid);
9009: }
9010:
9011: # -------------------------- Update MySQL table for portfolio file
9012:
9013: sub update_portfolio_table {
9014: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
9015: if ($group ne '') {
9016: $file_name =~s /^\Q$group\E//;
9017: }
9018: my $homeserver = &homeserver($uname,$udom);
9019: my $queryid=
9020: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
9021: ':'.&escape($file_name).':'.$action,$homeserver);
9022: my $reply = &get_query_reply($queryid);
9023: return $reply;
9024: }
9025:
9026: # -------------------------- Update MySQL allusers table
9027:
9028: sub update_allusers_table {
9029: my ($uname,$udom,$names) = @_;
9030: my $homeserver = &homeserver($uname,$udom);
9031: my $queryid=
9032: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
9033: 'lastname='.&escape($names->{'lastname'}).'%%'.
9034: 'firstname='.&escape($names->{'firstname'}).'%%'.
9035: 'middlename='.&escape($names->{'middlename'}).'%%'.
9036: 'generation='.&escape($names->{'generation'}).'%%'.
9037: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
9038: 'id='.&escape($names->{'id'}),$homeserver);
9039: return;
9040: }
9041:
9042: # ------- Request retrieval of institutional classlists for course(s)
9043:
9044: sub fetch_enrollment_query {
9045: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
9046: my ($homeserver,$sleep,$loopmax);
9047: my $maxtries = 1;
9048: if ($context eq 'automated') {
9049: $homeserver = $perlvar{'lonHostID'};
9050: $sleep = 2;
9051: $loopmax = 100;
9052: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
9053: } else {
9054: $homeserver = &homeserver($cnum,$dom);
9055: }
9056: my $host=&hostname($homeserver);
9057: my $cmd = '';
9058: foreach my $affiliate (keys(%{$affiliatesref})) {
9059: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
9060: }
9061: $cmd =~ s/%%$//;
9062: $cmd = &escape($cmd);
9063: my $query = 'fetchenrollment';
9064: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
9065: unless ($queryid=~/^\Q$host\E\_/) {
9066: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
9067: return 'error: '.$queryid;
9068: }
9069: my $reply = &get_query_reply($queryid,$sleep,$loopmax);
9070: my $tries = 1;
9071: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
9072: $reply = &get_query_reply($queryid,$sleep,$loopmax);
9073: $tries ++;
9074: }
9075: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
9076: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
9077: } else {
9078: my @responses = split(/:/,$reply);
9079: if (grep { $_ eq $homeserver } ¤t_machine_ids()) {
9080: foreach my $line (@responses) {
9081: my ($key,$value) = split(/=/,$line,2);
9082: $$replyref{$key} = $value;
9083: }
9084: } else {
9085: my $pathname = LONCAPA::tempdir();
9086: foreach my $line (@responses) {
9087: my ($key,$value) = split(/=/,$line);
9088: $$replyref{$key} = $value;
9089: if ($value > 0) {
9090: foreach my $item (@{$$affiliatesref{$key}}) {
9091: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
9092: my $destname = $pathname.'/'.$filename;
9093: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
9094: if ($xml_classlist =~ /^error/) {
9095: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
9096: } else {
9097: if ( open(FILE,">",$destname) ) {
9098: print FILE &unescape($xml_classlist);
9099: close(FILE);
9100: } else {
9101: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
9102: }
9103: }
9104: }
9105: }
9106: }
9107: }
9108: return 'ok';
9109: }
9110: return 'error';
9111: }
9112:
9113: sub get_query_reply {
9114: my ($queryid,$sleep,$loopmax) = @_;;
9115: if (($sleep eq '') || ($sleep !~ /^\d+\.?\d*$/)) {
9116: $sleep = 0.2;
9117: }
9118: if (($loopmax eq '') || ($loopmax =~ /\D/)) {
9119: $loopmax = 100;
9120: }
9121: my $replyfile=LONCAPA::tempdir().$queryid;
9122: my $reply='';
9123: for (1..$loopmax) {
9124: sleep($sleep);
9125: if (-e $replyfile.'.end') {
9126: if (open(my $fh,"<",$replyfile)) {
9127: $reply = join('',<$fh>);
9128: close($fh);
9129: } else { return 'error: reply_file_error'; }
9130: return &unescape($reply);
9131: }
9132: }
9133: return 'timeout:'.$queryid;
9134: }
9135:
9136: sub courselog_query {
9137: #
9138: # possible filters:
9139: # url: url or symb
9140: # username
9141: # domain
9142: # action: view, submit, grade
9143: # start: timestamp
9144: # end: timestamp
9145: #
9146: my (%filters)=@_;
9147: unless ($env{'request.course.id'}) { return 'no_course'; }
9148: if ($filters{'url'}) {
9149: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
9150: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
9151: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
9152: }
9153: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
9154: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
9155: return &log_query($cname,$cdom,'courselog',%filters);
9156: }
9157:
9158: sub userlog_query {
9159: #
9160: # possible filters:
9161: # action: log check role
9162: # start: timestamp
9163: # end: timestamp
9164: #
9165: my ($uname,$udom,%filters)=@_;
9166: return &log_query($uname,$udom,'userlog',%filters);
9167: }
9168:
9169: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
9170:
9171: sub auto_run {
9172: my ($cnum,$cdom) = @_;
9173: my $response = 0;
9174: my $settings;
9175: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
9176: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
9177: $settings = $domconfig{'autoenroll'};
9178: if ($settings->{'run'} eq '1') {
9179: $response = 1;
9180: }
9181: } else {
9182: my $homeserver;
9183: if (&is_course($cdom,$cnum)) {
9184: $homeserver = &homeserver($cnum,$cdom);
9185: } else {
9186: $homeserver = &domain($cdom,'primary');
9187: }
9188: if ($homeserver ne 'no_host') {
9189: $response = &reply('autorun:'.$cdom,$homeserver);
9190: }
9191: }
9192: return $response;
9193: }
9194:
9195: sub auto_get_sections {
9196: my ($cnum,$cdom,$inst_coursecode) = @_;
9197: my $homeserver;
9198: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9199: $homeserver = &homeserver($cnum,$cdom);
9200: }
9201: if (!defined($homeserver)) {
9202: if ($cdom =~ /^$match_domain$/) {
9203: $homeserver = &domain($cdom,'primary');
9204: }
9205: }
9206: my @secs;
9207: if (defined($homeserver)) {
9208: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
9209: unless ($response eq 'refused') {
9210: @secs = split(/:/,$response);
9211: }
9212: }
9213: return @secs;
9214: }
9215:
9216: sub auto_new_course {
9217: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
9218: my $homeserver = &homeserver($cnum,$cdom);
9219: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
9220: return $response;
9221: }
9222:
9223: sub auto_validate_courseID {
9224: my ($cnum,$cdom,$inst_course_id) = @_;
9225: my $homeserver = &homeserver($cnum,$cdom);
9226: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
9227: return $response;
9228: }
9229:
9230: sub auto_validate_instcode {
9231: my ($cnum,$cdom,$instcode,$owner) = @_;
9232: my ($homeserver,$response);
9233: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9234: $homeserver = &homeserver($cnum,$cdom);
9235: }
9236: if (!defined($homeserver)) {
9237: if ($cdom =~ /^$match_domain$/) {
9238: $homeserver = &domain($cdom,'primary');
9239: }
9240: }
9241: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
9242: &escape($instcode).':'.&escape($owner),$homeserver));
9243: my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
9244: return ($outcome,$description,$defaultcredits);
9245: }
9246:
9247: sub auto_create_password {
9248: my ($cnum,$cdom,$authparam,$udom) = @_;
9249: my ($homeserver,$response);
9250: my $create_passwd = 0;
9251: my $authchk = '';
9252: if ($udom =~ /^$match_domain$/) {
9253: $homeserver = &domain($udom,'primary');
9254: }
9255: if ($homeserver eq '') {
9256: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9257: $homeserver = &homeserver($cnum,$cdom);
9258: }
9259: }
9260: if ($homeserver eq '') {
9261: $authchk = 'nodomain';
9262: } else {
9263: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
9264: if ($response eq 'refused') {
9265: $authchk = 'refused';
9266: } else {
9267: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
9268: }
9269: }
9270: return ($authparam,$create_passwd,$authchk);
9271: }
9272:
9273: sub auto_photo_permission {
9274: my ($cnum,$cdom,$students) = @_;
9275: my $homeserver = &homeserver($cnum,$cdom);
9276: my ($outcome,$perm_reqd,$conditions) =
9277: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
9278: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
9279: return (undef,undef);
9280: }
9281: return ($outcome,$perm_reqd,$conditions);
9282: }
9283:
9284: sub auto_checkphotos {
9285: my ($uname,$udom,$pid) = @_;
9286: my $homeserver = &homeserver($uname,$udom);
9287: my ($result,$resulttype);
9288: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
9289: &escape($uname).':'.&escape($pid),
9290: $homeserver));
9291: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
9292: return (undef,undef);
9293: }
9294: if ($outcome) {
9295: ($result,$resulttype) = split(/:/,$outcome);
9296: }
9297: return ($result,$resulttype);
9298: }
9299:
9300: sub auto_photochoice {
9301: my ($cnum,$cdom) = @_;
9302: my $homeserver = &homeserver($cnum,$cdom);
9303: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
9304: &escape($cdom),
9305: $homeserver)));
9306: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
9307: return (undef,undef);
9308: }
9309: return ($update,$comment);
9310: }
9311:
9312: sub auto_photoupdate {
9313: my ($affiliatesref,$dom,$cnum,$photo) = @_;
9314: my $homeserver = &homeserver($cnum,$dom);
9315: my $host=&hostname($homeserver);
9316: my $cmd = '';
9317: my $maxtries = 1;
9318: foreach my $affiliate (keys(%{$affiliatesref})) {
9319: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
9320: }
9321: $cmd =~ s/%%$//;
9322: $cmd = &escape($cmd);
9323: my $query = 'institutionalphotos';
9324: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
9325: unless ($queryid=~/^\Q$host\E\_/) {
9326: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
9327: return 'error: '.$queryid;
9328: }
9329: my $reply = &get_query_reply($queryid);
9330: my $tries = 1;
9331: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
9332: $reply = &get_query_reply($queryid);
9333: $tries ++;
9334: }
9335: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
9336: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
9337: } else {
9338: my @responses = split(/:/,$reply);
9339: my $outcome = shift(@responses);
9340: foreach my $item (@responses) {
9341: my ($key,$value) = split(/=/,$item);
9342: $$photo{$key} = $value;
9343: }
9344: return $outcome;
9345: }
9346: return 'error';
9347: }
9348:
9349: sub auto_instcode_format {
9350: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
9351: $cat_order) = @_;
9352: my $courses = '';
9353: my @homeservers;
9354: if ($caller eq 'global') {
9355: my %servers = &get_servers($codedom,'library');
9356: foreach my $tryserver (keys(%servers)) {
9357: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
9358: push(@homeservers,$tryserver);
9359: }
9360: }
9361: } elsif ($caller eq 'requests') {
9362: if ($codedom =~ /^$match_domain$/) {
9363: my $chome = &domain($codedom,'primary');
9364: unless ($chome eq 'no_host') {
9365: push(@homeservers,$chome);
9366: }
9367: }
9368: } else {
9369: push(@homeservers,&homeserver($caller,$codedom));
9370: }
9371: foreach my $code (keys(%{$instcodes})) {
9372: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
9373: }
9374: chop($courses);
9375: my $ok_response = 0;
9376: my $response;
9377: while (@homeservers > 0 && $ok_response == 0) {
9378: my $server = shift(@homeservers);
9379: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
9380: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
9381: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
9382: split(/:/,$response);
9383: %{$codes} = (%{$codes},&str2hash($codes_str));
9384: push(@{$codetitles},&str2array($codetitles_str));
9385: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
9386: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
9387: $ok_response = 1;
9388: }
9389: }
9390: if ($ok_response) {
9391: return 'ok';
9392: } else {
9393: return $response;
9394: }
9395: }
9396:
9397: sub auto_instcode_defaults {
9398: my ($domain,$returnhash,$code_order) = @_;
9399: my @homeservers;
9400:
9401: my %servers = &get_servers($domain,'library');
9402: foreach my $tryserver (keys(%servers)) {
9403: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
9404: push(@homeservers,$tryserver);
9405: }
9406: }
9407:
9408: my $response;
9409: foreach my $server (@homeservers) {
9410: $response=&reply('autoinstcodedefaults:'.$domain,$server);
9411: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
9412:
9413: foreach my $pair (split(/\&/,$response)) {
9414: my ($name,$value)=split(/\=/,$pair);
9415: if ($name eq 'code_order') {
9416: @{$code_order} = split(/\&/,&unescape($value));
9417: } else {
9418: $returnhash->{&unescape($name)}=&unescape($value);
9419: }
9420: }
9421: return 'ok';
9422: }
9423:
9424: return $response;
9425: }
9426:
9427: sub auto_possible_instcodes {
9428: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
9429: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
9430: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
9431: return;
9432: }
9433: my (@homeservers,$uhome);
9434: if (defined(&domain($domain,'primary'))) {
9435: $uhome=&domain($domain,'primary');
9436: push(@homeservers,&domain($domain,'primary'));
9437: } else {
9438: my %servers = &get_servers($domain,'library');
9439: foreach my $tryserver (keys(%servers)) {
9440: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
9441: push(@homeservers,$tryserver);
9442: }
9443: }
9444: }
9445: my $response;
9446: foreach my $server (@homeservers) {
9447: $response=&reply('autopossibleinstcodes:'.$domain,$server);
9448: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
9449: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
9450: split(':',$response);
9451: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
9452: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
9453: foreach my $item (split('&',$cat_title)) {
9454: my ($name,$value)=split('=',$item);
9455: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
9456: }
9457: foreach my $item (split('&',$cat_order)) {
9458: my ($name,$value)=split('=',$item);
9459: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
9460: }
9461: return 'ok';
9462: }
9463: return $response;
9464: }
9465:
9466: sub auto_courserequest_checks {
9467: my ($dom) = @_;
9468: my ($homeserver,%validations);
9469: if ($dom =~ /^$match_domain$/) {
9470: $homeserver = &domain($dom,'primary');
9471: }
9472: unless ($homeserver eq 'no_host') {
9473: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
9474: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9475: my @items = split(/&/,$response);
9476: foreach my $item (@items) {
9477: my ($key,$value) = split('=',$item);
9478: $validations{&unescape($key)} = &thaw_unescape($value);
9479: }
9480: }
9481: }
9482: return %validations;
9483: }
9484:
9485: sub auto_courserequest_validation {
9486: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$custominfo) = @_;
9487: my ($homeserver,$response);
9488: if ($dom =~ /^$match_domain$/) {
9489: $homeserver = &domain($dom,'primary');
9490: }
9491: unless ($homeserver eq 'no_host') {
9492: my $customdata;
9493: if (ref($custominfo) eq 'HASH') {
9494: $customdata = &freeze_escape($custominfo);
9495: }
9496: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
9497: ':'.&escape($crstype).':'.&escape($inststatuslist).
9498: ':'.&escape($instcode).':'.&escape($instseclist).':'.
9499: $customdata,$homeserver));
9500: }
9501: return $response;
9502: }
9503:
9504: sub auto_validate_class_sec {
9505: my ($cdom,$cnum,$owners,$inst_class) = @_;
9506: my $homeserver = &homeserver($cnum,$cdom);
9507: my $ownerlist;
9508: if (ref($owners) eq 'ARRAY') {
9509: $ownerlist = join(',',@{$owners});
9510: } else {
9511: $ownerlist = $owners;
9512: }
9513: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
9514: &escape($ownerlist).':'.$cdom,$homeserver);
9515: return $response;
9516: }
9517:
9518: sub auto_validate_instclasses {
9519: my ($cdom,$cnum,$owners,$classesref) = @_;
9520: my ($homeserver,%validations);
9521: $homeserver = &homeserver($cnum,$cdom);
9522: unless ($homeserver eq 'no_host') {
9523: my $ownerlist;
9524: if (ref($owners) eq 'ARRAY') {
9525: $ownerlist = join(',',@{$owners});
9526: } else {
9527: $ownerlist = $owners;
9528: }
9529: if (ref($classesref) eq 'HASH') {
9530: my $classes = &freeze_escape($classesref);
9531: my $response=&reply('autovalidateinstclasses:'.&escape($ownerlist).
9532: ':'.$cdom.':'.$classes,$homeserver);
9533: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9534: my @items = split(/&/,$response);
9535: foreach my $item (@items) {
9536: my ($key,$value) = split('=',$item);
9537: $validations{&unescape($key)} = &thaw_unescape($value);
9538: }
9539: }
9540: }
9541: }
9542: return %validations;
9543: }
9544:
9545: sub auto_crsreq_update {
9546: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,
9547: $code,$accessstart,$accessend,$inbound) = @_;
9548: my ($homeserver,%crsreqresponse);
9549: if ($cdom =~ /^$match_domain$/) {
9550: $homeserver = &domain($cdom,'primary');
9551: }
9552: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
9553: my $info;
9554: if (ref($inbound) eq 'HASH') {
9555: $info = &freeze_escape($inbound);
9556: }
9557: my $response=&reply('autocrsrequpdate:'.$cdom.':'.$cnum.':'.&escape($crstype).
9558: ':'.&escape($action).':'.&escape($ownername).':'.
9559: &escape($ownerdomain).':'.&escape($fullname).':'.
9560: &escape($title).':'.&escape($code).':'.
9561: &escape($accessstart).':'.&escape($accessend).':'.$info,
9562: $homeserver);
9563: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9564: my @items = split(/&/,$response);
9565: foreach my $item (@items) {
9566: my ($key,$value) = split('=',$item);
9567: $crsreqresponse{&unescape($key)} = &thaw_unescape($value);
9568: }
9569: }
9570: }
9571: return \%crsreqresponse;
9572: }
9573:
9574: sub auto_export_grades {
9575: my ($cdom,$cnum,$inforef,$gradesref) = @_;
9576: my ($homeserver,%exportresponse);
9577: if ($cdom =~ /^$match_domain$/) {
9578: $homeserver = &domain($cdom,'primary');
9579: }
9580: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
9581: my $info;
9582: if (ref($inforef) eq 'HASH') {
9583: $info = &freeze_escape($inforef);
9584: }
9585: if (ref($gradesref) eq 'HASH') {
9586: my $grades = &freeze_escape($gradesref);
9587: my $response=&reply('encrypt:autoexportgrades:'.$cdom.':'.$cnum.':'.
9588: $info.':'.$grades,$homeserver);
9589: unless ($response =~ /(con_lost|error|no_such_host|refused|unknown_command)/) {
9590: my @items = split(/&/,$response);
9591: foreach my $item (@items) {
9592: my ($key,$value) = split('=',$item);
9593: $exportresponse{&unescape($key)} = &thaw_unescape($value);
9594: }
9595: }
9596: }
9597: }
9598: return \%exportresponse;
9599: }
9600:
9601: sub check_instcode_cloning {
9602: my ($codedefaults,$code_order,$cloner,$clonefromcode,$clonetocode) = @_;
9603: unless ((ref($codedefaults) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
9604: return;
9605: }
9606: my $canclone;
9607: if (@{$code_order} > 0) {
9608: my $instcoderegexp ='^';
9609: my @clonecodes = split(/\&/,$cloner);
9610: foreach my $item (@{$code_order}) {
9611: if (grep(/^\Q$item\E=/,@clonecodes)) {
9612: foreach my $pair (@clonecodes) {
9613: my ($key,$val) = split(/\=/,$pair,2);
9614: $val = &unescape($val);
9615: if ($key eq $item) {
9616: $instcoderegexp .= '('.$val.')';
9617: last;
9618: }
9619: }
9620: } else {
9621: $instcoderegexp .= $codedefaults->{$item};
9622: }
9623: }
9624: $instcoderegexp .= '$';
9625: my (@from,@to);
9626: eval {
9627: (@from) = ($clonefromcode =~ /$instcoderegexp/);
9628: (@to) = ($clonetocode =~ /$instcoderegexp/);
9629: };
9630: if ((@from > 0) && (@to > 0)) {
9631: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
9632: if (!@diffs) {
9633: $canclone = 1;
9634: }
9635: }
9636: }
9637: return $canclone;
9638: }
9639:
9640: sub default_instcode_cloning {
9641: my ($clonedom,$domdefclone,$clonefromcode,$clonetocode,$codedefaultsref,$codeorderref) = @_;
9642: my (%codedefaults,@code_order,$canclone);
9643: if ((ref($codedefaultsref) eq 'HASH') && (ref($codeorderref) eq 'ARRAY')) {
9644: %codedefaults = %{$codedefaultsref};
9645: @code_order = @{$codeorderref};
9646: } elsif ($clonedom) {
9647: &auto_instcode_defaults($clonedom,\%codedefaults,\@code_order);
9648: }
9649: if (($domdefclone) && (@code_order)) {
9650: my @clonecodes = split(/\+/,$domdefclone);
9651: my $instcoderegexp ='^';
9652: foreach my $item (@code_order) {
9653: if (grep(/^\Q$item\E$/,@clonecodes)) {
9654: $instcoderegexp .= '('.$codedefaults{$item}.')';
9655: } else {
9656: $instcoderegexp .= $codedefaults{$item};
9657: }
9658: }
9659: $instcoderegexp .= '$';
9660: my (@from,@to);
9661: eval {
9662: (@from) = ($clonefromcode =~ /$instcoderegexp/);
9663: (@to) = ($clonetocode =~ /$instcoderegexp/);
9664: };
9665: if ((@from > 0) && (@to > 0)) {
9666: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
9667: if (!@diffs) {
9668: $canclone = 1;
9669: }
9670: }
9671: }
9672: return $canclone;
9673: }
9674:
9675: # ------------------------------------------------------- Course Group routines
9676:
9677: sub get_coursegroups {
9678: my ($cdom,$cnum,$group,$namespace) = @_;
9679: return(&dump($namespace,$cdom,$cnum,$group));
9680: }
9681:
9682: sub modify_coursegroup {
9683: my ($cdom,$cnum,$groupsettings) = @_;
9684: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
9685: }
9686:
9687: sub toggle_coursegroup_status {
9688: my ($cdom,$cnum,$group,$action) = @_;
9689: my ($from_namespace,$to_namespace);
9690: if ($action eq 'delete') {
9691: $from_namespace = 'coursegroups';
9692: $to_namespace = 'deleted_groups';
9693: } else {
9694: $from_namespace = 'deleted_groups';
9695: $to_namespace = 'coursegroups';
9696: }
9697: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
9698: if (my $tmp = &error(%curr_group)) {
9699: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
9700: return ('read error',$tmp);
9701: } else {
9702: my %savedsettings = %curr_group;
9703: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
9704: my $deloutcome;
9705: if ($result eq 'ok') {
9706: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
9707: } else {
9708: return ('write error',$result);
9709: }
9710: if ($deloutcome eq 'ok') {
9711: return 'ok';
9712: } else {
9713: return ('delete error',$deloutcome);
9714: }
9715: }
9716: }
9717:
9718: sub modify_group_roles {
9719: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
9720: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
9721: my $role = 'gr/'.&escape($userprivs);
9722: my ($uname,$udom) = split(/:/,$user);
9723: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
9724: if ($result eq 'ok') {
9725: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
9726: }
9727: return $result;
9728: }
9729:
9730: sub modify_coursegroup_membership {
9731: my ($cdom,$cnum,$membership) = @_;
9732: my $result = &put('groupmembership',$membership,$cdom,$cnum);
9733: return $result;
9734: }
9735:
9736: sub get_active_groups {
9737: my ($udom,$uname,$cdom,$cnum) = @_;
9738: my $now = time;
9739: my %groups = ();
9740: foreach my $key (keys(%env)) {
9741: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
9742: my ($start,$end) = split(/\./,$env{$key});
9743: if (($end!=0) && ($end<$now)) { next; }
9744: if (($start!=0) && ($start>$now)) { next; }
9745: if ($1 eq $cdom && $2 eq $cnum) {
9746: $groups{$3} = $env{$key} ;
9747: }
9748: }
9749: }
9750: return %groups;
9751: }
9752:
9753: sub get_group_membership {
9754: my ($cdom,$cnum,$group) = @_;
9755: return(&dump('groupmembership',$cdom,$cnum,$group));
9756: }
9757:
9758: sub get_users_groups {
9759: my ($udom,$uname,$courseid) = @_;
9760: my @usersgroups;
9761: my $cachetime=1800;
9762:
9763: my $hashid="$udom:$uname:$courseid";
9764: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
9765: if (defined($cached)) {
9766: @usersgroups = split(/:/,$grouplist);
9767: } else {
9768: $grouplist = '';
9769: my $courseurl = &courseid_to_courseurl($courseid);
9770: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
9771: my $access_end = $env{'course.'.$courseid.
9772: '.default_enrollment_end_date'};
9773: my $now = time;
9774: foreach my $key (keys(%roleshash)) {
9775: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
9776: my $group = $1;
9777: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
9778: my $start = $2;
9779: my $end = $1;
9780: if ($start == -1) { next; } # deleted from group
9781: if (($start!=0) && ($start>$now)) { next; }
9782: if (($end!=0) && ($end<$now)) {
9783: if ($access_end && $access_end < $now) {
9784: if ($access_end - $end < 86400) {
9785: push(@usersgroups,$group);
9786: }
9787: }
9788: next;
9789: }
9790: push(@usersgroups,$group);
9791: }
9792: }
9793: }
9794: @usersgroups = &sort_course_groups($courseid,@usersgroups);
9795: $grouplist = join(':',@usersgroups);
9796: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
9797: }
9798: return @usersgroups;
9799: }
9800:
9801: sub devalidate_getgroups_cache {
9802: my ($udom,$uname,$cdom,$cnum)=@_;
9803: my $courseid = $cdom.'_'.$cnum;
9804:
9805: my $hashid="$udom:$uname:$courseid";
9806: &devalidate_cache_new('getgroups',$hashid);
9807: }
9808:
9809: # ------------------------------------------------------------------ Plain Text
9810:
9811: sub plaintext {
9812: my ($short,$type,$cid,$forcedefault) = @_;
9813: if ($short =~ m{^cr/}) {
9814: return (split('/',$short))[-1];
9815: }
9816: if (!defined($cid)) {
9817: $cid = $env{'request.course.id'};
9818: }
9819: my %rolenames = (
9820: Course => 'std',
9821: Community => 'alt1',
9822: Placement => 'std',
9823: );
9824: if ($cid ne '') {
9825: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
9826: unless ($forcedefault) {
9827: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
9828: &Apache::lonlocal::mt_escape(\$roletext);
9829: return &Apache::lonlocal::mt($roletext);
9830: }
9831: }
9832: }
9833: if ((defined($type)) && (defined($rolenames{$type})) &&
9834: (defined($rolenames{$type})) &&
9835: (defined($prp{$short}{$rolenames{$type}}))) {
9836: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
9837: } elsif ($cid ne '') {
9838: my $crstype = $env{'course.'.$cid.'.type'};
9839: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
9840: (defined($prp{$short}{$rolenames{$crstype}}))) {
9841: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
9842: }
9843: }
9844: return &Apache::lonlocal::mt($prp{$short}{'std'});
9845: }
9846:
9847: # ----------------------------------------------------------------- Assign Role
9848:
9849: sub assignrole {
9850: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
9851: $context)=@_;
9852: my $mrole;
9853: if ($role =~ /^cr\//) {
9854: my $cwosec=$url;
9855: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
9856: unless (&allowed('ccr',$cwosec)) {
9857: my $refused = 1;
9858: if ($context eq 'requestcourses') {
9859: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
9860: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
9861: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
9862: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
9863: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9864: if ($crsenv{'internal.courseowner'} eq
9865: $env{'user.name'}.':'.$env{'user.domain'}) {
9866: $refused = '';
9867: }
9868: }
9869: }
9870: }
9871: }
9872: if ($refused) {
9873: &logthis('Refused custom assignrole: '.
9874: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
9875: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
9876: return 'refused';
9877: }
9878: }
9879: $mrole='cr';
9880: } elsif ($role =~ /^gr\//) {
9881: my $cwogrp=$url;
9882: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
9883: unless (&allowed('mdg',$cwogrp)) {
9884: &logthis('Refused group assignrole: '.
9885: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
9886: $env{'user.name'}.' at '.$env{'user.domain'});
9887: return 'refused';
9888: }
9889: $mrole='gr';
9890: } else {
9891: my $cwosec=$url;
9892: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
9893: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
9894: my $refused;
9895: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
9896: if (!(&allowed('c'.$role,$url))) {
9897: $refused = 1;
9898: }
9899: } else {
9900: $refused = 1;
9901: }
9902: if ($refused) {
9903: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
9904: if (!$selfenroll && (($context eq 'course') || ($context eq 'ltienroll' && $env{'request.lti.login'}))) {
9905: my %crsenv;
9906: if ($role eq 'cc' || $role eq 'co') {
9907: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9908: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
9909: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
9910: if ($crsenv{'internal.courseowner'} eq
9911: $env{'user.name'}.':'.$env{'user.domain'}) {
9912: $refused = '';
9913: }
9914: }
9915: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
9916: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
9917: if ($crsenv{'internal.courseowner'} eq
9918: $env{'user.name'}.':'.$env{'user.domain'}) {
9919: $refused = '';
9920: }
9921: }
9922: }
9923: }
9924: } elsif (($selfenroll == 1) && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
9925: if ($role eq 'st') {
9926: $refused = '';
9927: } elsif (($context eq 'ltienroll') && ($env{'request.lti.login'})) {
9928: $refused = '';
9929: }
9930: } elsif ($context eq 'requestcourses') {
9931: my @possroles = ('st','ta','ep','in','cc','co');
9932: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
9933: my $wrongcc;
9934: if ($cnum =~ /^$match_community$/) {
9935: $wrongcc = 1 if ($role eq 'cc');
9936: } else {
9937: $wrongcc = 1 if ($role eq 'co');
9938: }
9939: unless ($wrongcc) {
9940: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9941: if ($crsenv{'internal.courseowner'} eq
9942: $env{'user.name'}.':'.$env{'user.domain'}) {
9943: $refused = '';
9944: }
9945: }
9946: }
9947: } elsif ($context eq 'requestauthor') {
9948: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
9949: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
9950: if ($env{'environment.requestauthor'} eq 'automatic') {
9951: $refused = '';
9952: } else {
9953: my %domdefaults = &get_domain_defaults($udom);
9954: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
9955: my $checkbystatus;
9956: if ($env{'user.adv'}) {
9957: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
9958: if ($disposition eq 'automatic') {
9959: $refused = '';
9960: } elsif ($disposition eq '') {
9961: $checkbystatus = 1;
9962: }
9963: } else {
9964: $checkbystatus = 1;
9965: }
9966: if ($checkbystatus) {
9967: if ($env{'environment.inststatus'}) {
9968: my @inststatuses = split(/,/,$env{'environment.inststatus'});
9969: foreach my $type (@inststatuses) {
9970: if (($type ne '') &&
9971: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
9972: $refused = '';
9973: }
9974: }
9975: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
9976: $refused = '';
9977: }
9978: }
9979: }
9980: }
9981: }
9982: }
9983: if ($refused) {
9984: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
9985: ' '.$role.' '.$end.' '.$start.' by '.
9986: $env{'user.name'}.' at '.$env{'user.domain'});
9987: return 'refused';
9988: }
9989: }
9990: } elsif ($role eq 'au') {
9991: if ($url ne '/'.$udom.'/') {
9992: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
9993: ' to assign author role for '.$uname.':'.$udom.
9994: ' in domain: '.$url.' refused (wrong domain).');
9995: return 'refused';
9996: }
9997: }
9998: $mrole=$role;
9999: }
10000: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
10001: "$udom:$uname:$url".'_'."$mrole=$role";
10002: if ($end) { $command.='_'.$end; }
10003: if ($start) {
10004: if ($end) {
10005: $command.='_'.$start;
10006: } else {
10007: $command.='_0_'.$start;
10008: }
10009: }
10010: my $origstart = $start;
10011: my $origend = $end;
10012: my $delflag;
10013: # actually delete
10014: if ($deleteflag) {
10015: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
10016: # modify command to delete the role
10017: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
10018: "$udom:$uname:$url".'_'."$mrole";
10019: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
10020: # set start and finish to negative values for userrolelog
10021: $start=-1;
10022: $end=-1;
10023: $delflag = 1;
10024: }
10025: }
10026: # send command
10027: my $answer=&reply($command,&homeserver($uname,$udom));
10028: # log new user role if status is ok
10029: if ($answer eq 'ok') {
10030: &userrolelog($role,$uname,$udom,$url,$start,$end);
10031: if (($role eq 'cc') || ($role eq 'in') ||
10032: ($role eq 'ep') || ($role eq 'ad') ||
10033: ($role eq 'ta') || ($role eq 'st') ||
10034: ($role=~/^cr/) || ($role eq 'gr') ||
10035: ($role eq 'co')) {
10036: # for course roles, perform group memberships changes triggered by role change.
10037: unless ($role =~ /^gr/) {
10038: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
10039: $origstart,$selfenroll,$context);
10040: }
10041: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
10042: $selfenroll,$context);
10043: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
10044: ($role eq 'au') || ($role eq 'dc') || ($role eq 'dh') ||
10045: ($role eq 'da')) {
10046: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
10047: $context);
10048: } elsif (($role eq 'ca') || ($role eq 'aa')) {
10049: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
10050: $context);
10051: }
10052: if ($role eq 'cc') {
10053: &autoupdate_coowners($url,$end,$start,$uname,$udom);
10054: }
10055: }
10056: return $answer;
10057: }
10058:
10059: sub autoupdate_coowners {
10060: my ($url,$end,$start,$uname,$udom) = @_;
10061: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
10062: if (($cdom ne '') && ($cnum ne '')) {
10063: my $now = time;
10064: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
10065: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
10066: my %coursehash = &coursedescription($cdom.'_'.$cnum);
10067: my $instcode = $coursehash{'internal.coursecode'};
10068: if ($instcode ne '') {
10069: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
10070: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
10071: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
10072: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
10073: if ($result eq 'valid') {
10074: if ($coursehash{'internal.co-owners'}) {
10075: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
10076: push(@newcoowners,$coowner);
10077: }
10078: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
10079: push(@newcoowners,$uname.':'.$udom);
10080: }
10081: @newcoowners = sort(@newcoowners);
10082: } else {
10083: push(@newcoowners,$uname.':'.$udom);
10084: }
10085: } else {
10086: if ($coursehash{'internal.co-owners'}) {
10087: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
10088: unless ($coowner eq $uname.':'.$udom) {
10089: push(@newcoowners,$coowner);
10090: }
10091: }
10092: unless (@newcoowners > 0) {
10093: $delcoowners = 1;
10094: $coowners = '';
10095: }
10096: }
10097: }
10098: if (@newcoowners || $delcoowners) {
10099: &store_coowners($cdom,$cnum,$coursehash{'home'},
10100: $delcoowners,@newcoowners);
10101: }
10102: }
10103: }
10104: }
10105: }
10106: }
10107: }
10108:
10109: sub store_coowners {
10110: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
10111: my $cid = $cdom.'_'.$cnum;
10112: my ($coowners,$delresult,$putresult);
10113: if (@newcoowners) {
10114: $coowners = join(',',@newcoowners);
10115: my %coownershash = (
10116: 'internal.co-owners' => $coowners,
10117: );
10118: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
10119: if ($putresult eq 'ok') {
10120: if ($env{'course.'.$cid.'.num'} eq $cnum) {
10121: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
10122: }
10123: }
10124: }
10125: if ($delcoowners) {
10126: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
10127: if ($delresult eq 'ok') {
10128: if ($env{'course.'.$cid.'.internal.co-owners'}) {
10129: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
10130: }
10131: }
10132: }
10133: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
10134: my %crsinfo =
10135: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
10136: if (ref($crsinfo{$cid}) eq 'HASH') {
10137: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
10138: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
10139: }
10140: }
10141: }
10142:
10143: # -------------------------------------------------- Modify user authentication
10144: # Overrides without validation
10145:
10146: sub modifyuserauth {
10147: my ($udom,$uname,$umode,$upass)=@_;
10148: my $uhome=&homeserver($uname,$udom);
10149: my $allowed;
10150: if (&allowed('mau',$udom)) {
10151: $allowed = 1;
10152: } elsif (($umode eq 'internal') && ($udom eq $env{'user.domain'}) &&
10153: ($env{'request.course.id'}) && (&allowed('mip',$env{'request.course.id'})) &&
10154: (!$env{'course.'.$env{'request.course.id'}.'.internal.nopasswdchg'})) {
10155: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
10156: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
10157: if (($cdom ne '') && ($cnum ne '')) {
10158: my $is_owner = &is_course_owner($cdom,$cnum);
10159: if ($is_owner) {
10160: $allowed = 1;
10161: }
10162: }
10163: }
10164: unless ($allowed) { return 'refused'; }
10165: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
10166: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
10167: ' in domain '.$env{'request.role.domain'});
10168: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
10169: &escape($upass),$uhome);
10170: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
10171: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
10172: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
10173: &log($udom,,$uname,$uhome,
10174: 'Authentication changed by '.$env{'user.domain'}.', '.
10175: $env{'user.name'}.', '.$umode.
10176: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
10177: unless ($reply eq 'ok') {
10178: &logthis('Authentication mode error: '.$reply);
10179: return 'error: '.$reply;
10180: }
10181: return 'ok';
10182: }
10183:
10184: # --------------------------------------------------------------- Modify a user
10185:
10186: sub modifyuser {
10187: my ($udom, $uname, $uid,
10188: $umode, $upass, $first,
10189: $middle, $last, $gene,
10190: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
10191: $udom= &LONCAPA::clean_domain($udom);
10192: $uname=&LONCAPA::clean_username($uname);
10193: my $showcandelete = 'none';
10194: if (ref($candelete) eq 'ARRAY') {
10195: if (@{$candelete} > 0) {
10196: $showcandelete = join(', ',@{$candelete});
10197: }
10198: }
10199: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
10200: $umode.', '.$first.', '.$middle.', '.
10201: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
10202: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
10203: ' desiredhome not specified').
10204: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
10205: ' in domain '.$env{'request.role.domain'});
10206: my $uhome=&homeserver($uname,$udom,'true');
10207: my $newuser;
10208: if ($uhome eq 'no_host') {
10209: $newuser = 1;
10210: unless (($umode && ($upass ne '')) || ($umode eq 'localauth') ||
10211: ($umode eq 'lti')) {
10212: return 'error: more information needed to create new user';
10213: }
10214: }
10215: # ----------------------------------------------------------------- Create User
10216: if (($uhome eq 'no_host') &&
10217: (($umode && $upass) || ($umode eq 'localauth') || ($umode eq 'lti'))) {
10218: my $unhome='';
10219: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
10220: $unhome = $desiredhome;
10221: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
10222: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
10223: } else { # load balancing routine for determining $unhome
10224: my $loadm=10000000;
10225: my %servers = &get_servers($udom,'library');
10226: foreach my $tryserver (keys(%servers)) {
10227: my $answer=reply('load',$tryserver);
10228: if (($answer=~/\d+/) && ($answer<$loadm)) {
10229: $loadm=$answer;
10230: $unhome=$tryserver;
10231: }
10232: }
10233: }
10234: if (($unhome eq '') || ($unhome eq 'no_host')) {
10235: return 'error: unable to find a home server for '.$uname.
10236: ' in domain '.$udom;
10237: }
10238: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
10239: &escape($upass),$unhome);
10240: unless ($reply eq 'ok') {
10241: return 'error: '.$reply;
10242: }
10243: $uhome=&homeserver($uname,$udom,'true');
10244: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
10245: return 'error: unable verify users home machine.';
10246: }
10247: } # End of creation of new user
10248: # ---------------------------------------------------------------------- Add ID
10249: if ($uid) {
10250: $uid=~tr/A-Z/a-z/;
10251: my %uidhash=&idrget($udom,$uname);
10252: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
10253: && (!$forceid)) {
10254: unless ($uid eq $uidhash{$uname}) {
10255: return 'error: user id "'.$uid.'" does not match '.
10256: 'current user id "'.$uidhash{$uname}.'".';
10257: }
10258: } else {
10259: &idput($udom,{$uname => $uid},$uhome,'ids');
10260: }
10261: }
10262: # -------------------------------------------------------------- Add names, etc
10263: my @tmp=&get('environment',
10264: ['firstname','middlename','lastname','generation','id',
10265: 'permanentemail','inststatus'],
10266: $udom,$uname);
10267: my (%names,%oldnames);
10268: if ($tmp[0] =~ m/^error:.*/) {
10269: %names=();
10270: } else {
10271: %names = @tmp;
10272: %oldnames = %names;
10273: }
10274: #
10275: # If name, email and/or uid are blank (e.g., because an uploaded file
10276: # of users did not contain them), do not overwrite existing values
10277: # unless field is in $candelete array ref.
10278: #
10279:
10280: my @fields = ('firstname','middlename','lastname','generation',
10281: 'permanentemail','id');
10282: my %newvalues;
10283: if (ref($candelete) eq 'ARRAY') {
10284: foreach my $field (@fields) {
10285: if (grep(/^\Q$field\E$/,@{$candelete})) {
10286: if ($field eq 'firstname') {
10287: $names{$field} = $first;
10288: } elsif ($field eq 'middlename') {
10289: $names{$field} = $middle;
10290: } elsif ($field eq 'lastname') {
10291: $names{$field} = $last;
10292: } elsif ($field eq 'generation') {
10293: $names{$field} = $gene;
10294: } elsif ($field eq 'permanentemail') {
10295: $names{$field} = $email;
10296: } elsif ($field eq 'id') {
10297: $names{$field} = $uid;
10298: }
10299: }
10300: }
10301: }
10302: if ($first) { $names{'firstname'} = $first; }
10303: if (defined($middle)) { $names{'middlename'} = $middle; }
10304: if ($last) { $names{'lastname'} = $last; }
10305: if (defined($gene)) { $names{'generation'} = $gene; }
10306: if ($email) {
10307: $email=~s/[^\w\@\.\-\,]//gs;
10308: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
10309: }
10310: if ($uid) { $names{'id'} = $uid; }
10311: if (defined($inststatus)) {
10312: $names{'inststatus'} = '';
10313: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
10314: if (ref($usertypes) eq 'HASH') {
10315: my @okstatuses;
10316: foreach my $item (split(/:/,$inststatus)) {
10317: if (defined($usertypes->{$item})) {
10318: push(@okstatuses,$item);
10319: }
10320: }
10321: if (@okstatuses) {
10322: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
10323: }
10324: }
10325: }
10326: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
10327: $umode.', '.$first.', '.$middle.', '.
10328: $last.', '.$gene.', '.$email.', '.$inststatus;
10329: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
10330: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
10331: } else {
10332: $logmsg .= ' during self creation';
10333: }
10334: my $changed;
10335: if ($newuser) {
10336: $changed = 1;
10337: } else {
10338: foreach my $field (@fields) {
10339: if ($names{$field} ne $oldnames{$field}) {
10340: $changed = 1;
10341: last;
10342: }
10343: }
10344: }
10345: unless ($changed) {
10346: $logmsg = 'No changes in user information needed for: '.$logmsg;
10347: &logthis($logmsg);
10348: return 'ok';
10349: }
10350: my $reply = &put('environment', \%names, $udom,$uname);
10351: if ($reply ne 'ok') {
10352: return 'error: '.$reply;
10353: }
10354: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
10355: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
10356: }
10357: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
10358: &devalidate_cache_new('namescache',$uname.':'.$udom);
10359: $logmsg = 'Success modifying user '.$logmsg;
10360: &logthis($logmsg);
10361: return 'ok';
10362: }
10363:
10364: # -------------------------------------------------------------- Modify student
10365:
10366: sub modifystudent {
10367: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
10368: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
10369: $selfenroll,$context,$inststatus,$credits,$instsec)=@_;
10370: if (!$cid) {
10371: unless ($cid=$env{'request.course.id'}) {
10372: return 'not_in_class';
10373: }
10374: }
10375: # --------------------------------------------------------------- Make the user
10376: my $reply=&modifyuser
10377: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
10378: $desiredhome,$email,$inststatus);
10379: unless ($reply eq 'ok') { return $reply; }
10380: # This will cause &modify_student_enrollment to get the uid from the
10381: # student's environment
10382: $uid = undef if (!$forceid);
10383: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
10384: $gene,$usec,$end,$start,$type,$locktype,
10385: $cid,$selfenroll,$context,$credits,$instsec);
10386: return $reply;
10387: }
10388:
10389: sub modify_student_enrollment {
10390: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
10391: $locktype,$cid,$selfenroll,$context,$credits,$instsec) = @_;
10392: my ($cdom,$cnum,$chome);
10393: if (!$cid) {
10394: unless ($cid=$env{'request.course.id'}) {
10395: return 'not_in_class';
10396: }
10397: $cdom=$env{'course.'.$cid.'.domain'};
10398: $cnum=$env{'course.'.$cid.'.num'};
10399: } else {
10400: ($cdom,$cnum)=split(/_/,$cid);
10401: }
10402: $chome=$env{'course.'.$cid.'.home'};
10403: if (!$chome) {
10404: $chome=&homeserver($cnum,$cdom);
10405: }
10406: if (!$chome) { return 'unknown_course'; }
10407: # Make sure the user exists
10408: my $uhome=&homeserver($uname,$udom);
10409: if (($uhome eq '') || ($uhome eq 'no_host')) {
10410: return 'error: no such user';
10411: }
10412: # Get student data if we were not given enough information
10413: if (!defined($first) || $first eq '' ||
10414: !defined($last) || $last eq '' ||
10415: !defined($uid) || $uid eq '' ||
10416: !defined($middle) || $middle eq '' ||
10417: !defined($gene) || $gene eq '') {
10418: # They did not supply us with enough data to enroll the student, so
10419: # we need to pick up more information.
10420: my %tmp = &get('environment',
10421: ['firstname','middlename','lastname', 'generation','id']
10422: ,$udom,$uname);
10423:
10424: #foreach my $key (keys(%tmp)) {
10425: # &logthis("key $key = ".$tmp{$key});
10426: #}
10427: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
10428: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
10429: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
10430: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
10431: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
10432: }
10433: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
10434: my $user = "$uname:$udom";
10435: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
10436: my $reply=cput('classlist',
10437: {$user =>
10438: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits,$instsec) },
10439: $cdom,$cnum);
10440: if (($reply eq 'ok') || ($reply eq 'delayed')) {
10441: &devalidate_getsection_cache($udom,$uname,$cid);
10442: } else {
10443: return 'error: '.$reply;
10444: }
10445: # Add student role to user
10446: my $uurl='/'.$cid;
10447: $uurl=~s/\_/\//g;
10448: if ($usec) {
10449: $uurl.='/'.$usec;
10450: }
10451: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
10452: $selfenroll,$context);
10453: if ($result ne 'ok') {
10454: if ($old_entry{$user} ne '') {
10455: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
10456: } else {
10457: $reply = &del('classlist',[$user],$cdom,$cnum);
10458: }
10459: }
10460: return $result;
10461: }
10462:
10463: sub format_name {
10464: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
10465: my $name;
10466: if ($first ne 'lastname') {
10467: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
10468: } else {
10469: if ($lastname=~/\S/) {
10470: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
10471: $name=~s/\s+,/,/;
10472: } else {
10473: $name.= $firstname.' '.$middlename.' '.$generation;
10474: }
10475: }
10476: $name=~s/^\s+//;
10477: $name=~s/\s+$//;
10478: $name=~s/\s+/ /g;
10479: return $name;
10480: }
10481:
10482: # ------------------------------------------------- Write to course preferences
10483:
10484: sub writecoursepref {
10485: my ($courseid,%prefs)=@_;
10486: $courseid=~s/^\///;
10487: $courseid=~s/\_/\//g;
10488: my ($cdomain,$cnum)=split(/\//,$courseid);
10489: my $chome=homeserver($cnum,$cdomain);
10490: if (($chome eq '') || ($chome eq 'no_host')) {
10491: return 'error: no such course';
10492: }
10493: my $cstring='';
10494: foreach my $pref (keys(%prefs)) {
10495: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
10496: }
10497: $cstring=~s/\&$//;
10498: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
10499: }
10500:
10501: # ---------------------------------------------------------- Make/modify course
10502:
10503: sub createcourse {
10504: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
10505: $course_owner,$crstype,$cnum,$context,$category)=@_;
10506: $url=&declutter($url);
10507: my $cid='';
10508: if ($context eq 'requestcourses') {
10509: my $can_create = 0;
10510: my ($ownername,$ownerdom) = split(':',$course_owner);
10511: if ($udom eq $ownerdom) {
10512: if (&usertools_access($ownername,$ownerdom,$category,undef,
10513: $context)) {
10514: $can_create = 1;
10515: }
10516: } else {
10517: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
10518: $category);
10519: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
10520: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
10521: if (@curr > 0) {
10522: my @options = qw(approval validate autolimit);
10523: my $optregex = join('|',@options);
10524: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
10525: $can_create = 1;
10526: }
10527: }
10528: }
10529: }
10530: if ($can_create) {
10531: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
10532: unless (&allowed('ccc',$udom)) {
10533: return 'refused';
10534: }
10535: }
10536: } else {
10537: return 'refused';
10538: }
10539: } elsif (!&allowed('ccc',$udom)) {
10540: return 'refused';
10541: }
10542: # --------------------------------------------------------------- Get Unique ID
10543: my $uname;
10544: if ($cnum =~ /^$match_courseid$/) {
10545: my $chome=&homeserver($cnum,$udom,'true');
10546: if (($chome eq '') || ($chome eq 'no_host')) {
10547: $uname = $cnum;
10548: } else {
10549: $uname = &generate_coursenum($udom,$crstype);
10550: }
10551: } else {
10552: $uname = &generate_coursenum($udom,$crstype);
10553: }
10554: return $uname if ($uname =~ /^error/);
10555: # -------------------------------------------------- Check supplied server name
10556: if (!defined($course_server)) {
10557: if (defined(&domain($udom,'primary'))) {
10558: $course_server = &domain($udom,'primary');
10559: } else {
10560: $course_server = $env{'user.home'};
10561: }
10562: }
10563: my %host_servers =
10564: &Apache::lonnet::get_servers($udom,'library');
10565: unless ($host_servers{$course_server}) {
10566: return 'error: invalid home server for course: '.$course_server;
10567: }
10568: # ------------------------------------------------------------- Make the course
10569: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
10570: $course_server);
10571: unless ($reply eq 'ok') { return 'error: '.$reply; }
10572: my $uhome=&homeserver($uname,$udom,'true');
10573: if (($uhome eq '') || ($uhome eq 'no_host')) {
10574: return 'error: no such course';
10575: }
10576: # ----------------------------------------------------------------- Course made
10577: # log existence
10578: my $now = time;
10579: my $newcourse = {
10580: $udom.'_'.$uname => {
10581: description => $description,
10582: inst_code => $inst_code,
10583: owner => $course_owner,
10584: type => $crstype,
10585: creator => $env{'user.name'}.':'.
10586: $env{'user.domain'},
10587: created => $now,
10588: context => $context,
10589: },
10590: };
10591: &courseidput($udom,$newcourse,$uhome,'notime');
10592: # set toplevel url
10593: my $topurl=$url;
10594: unless ($nonstandard) {
10595: # ------------------------------------------ For standard courses, make top url
10596: my $mapurl=&clutter($url);
10597: if ($mapurl eq '/res/') { $mapurl=''; }
10598: $env{'form.initmap'}=(<<ENDINITMAP);
10599: <map>
10600: <resource id="1" type="start"></resource>
10601: <resource id="2" src="$mapurl"></resource>
10602: <resource id="3" type="finish"></resource>
10603: <link index="1" from="1" to="2"></link>
10604: <link index="2" from="2" to="3"></link>
10605: </map>
10606: ENDINITMAP
10607: $topurl=&declutter(
10608: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
10609: );
10610: }
10611: # ----------------------------------------------------------- Write preferences
10612: &writecoursepref($udom.'_'.$uname,
10613: ('description' => $description,
10614: 'url' => $topurl,
10615: 'internal.creator' => $env{'user.name'}.':'.
10616: $env{'user.domain'},
10617: 'internal.created' => $now,
10618: 'internal.creationcontext' => $context)
10619: );
10620: return '/'.$udom.'/'.$uname;
10621: }
10622:
10623: # ------------------------------------------------------------------- Create ID
10624: sub generate_coursenum {
10625: my ($udom,$crstype) = @_;
10626: my $domdesc = &domain($udom);
10627: return 'error: invalid domain' if ($domdesc eq '');
10628: my $first;
10629: if ($crstype eq 'Community') {
10630: $first = '0';
10631: } else {
10632: $first = int(1+rand(9));
10633: }
10634: my $uname=$first.
10635: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
10636: substr($$.time,0,5).unpack("H8",pack("I32",time)).
10637: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
10638: # ----------------------------------------------- Make sure that does not exist
10639: my $uhome=&homeserver($uname,$udom,'true');
10640: unless (($uhome eq '') || ($uhome eq 'no_host')) {
10641: if ($crstype eq 'Community') {
10642: $first = '0';
10643: } else {
10644: $first = int(1+rand(9));
10645: }
10646: $uname=$first.
10647: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
10648: substr($$.time,0,5).unpack("H8",pack("I32",time)).
10649: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
10650: $uhome=&homeserver($uname,$udom,'true');
10651: unless (($uhome eq '') || ($uhome eq 'no_host')) {
10652: return 'error: unable to generate unique course-ID';
10653: }
10654: }
10655: return $uname;
10656: }
10657:
10658: sub is_course {
10659: my ($cdom, $cnum) = scalar(@_) == 1 ?
10660: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
10661:
10662: return unless (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/));
10663: my $uhome=&homeserver($cnum,$cdom);
10664: my $iscourse;
10665: if (grep { $_ eq $uhome } current_machine_ids()) {
10666: $iscourse = &LONCAPA::Lond::is_course($cdom,$cnum);
10667: } else {
10668: my $hashid = $cdom.':'.$cnum;
10669: ($iscourse,my $cached) = &is_cached_new('iscourse',$hashid);
10670: unless (defined($cached)) {
10671: my %courses = &courseiddump($cdom, '.', 1, '.', '.',
10672: $cnum,undef,undef,'.');
10673: $iscourse = 0;
10674: if (exists($courses{$cdom.'_'.$cnum})) {
10675: $iscourse = 1;
10676: }
10677: &do_cache_new('iscourse',$hashid,$iscourse,3600);
10678: }
10679: }
10680: return unless ($iscourse);
10681: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
10682: }
10683:
10684: sub store_userdata {
10685: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
10686: my $result;
10687: if ($datakey ne '') {
10688: if (ref($storehash) eq 'HASH') {
10689: if ($udom eq '' || $uname eq '') {
10690: $udom = $env{'user.domain'};
10691: $uname = $env{'user.name'};
10692: }
10693: my $uhome=&homeserver($uname,$udom);
10694: if (($uhome eq '') || ($uhome eq 'no_host')) {
10695: $result = 'error: no_host';
10696: } else {
10697: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
10698: $storehash->{'host'} = $perlvar{'lonHostID'};
10699:
10700: my $namevalue='';
10701: foreach my $key (keys(%{$storehash})) {
10702: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
10703: }
10704: $namevalue=~s/\&$//;
10705: unless ($namespace eq 'courserequests') {
10706: $datakey = &escape($datakey);
10707: }
10708: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
10709: $namevalue,$uhome);
10710: }
10711: } else {
10712: $result = 'error: data to store was not a hash reference';
10713: }
10714: } else {
10715: $result= 'error: invalid requestkey';
10716: }
10717: return $result;
10718: }
10719:
10720: # ---------------------------------------------------------- Assign Custom Role
10721:
10722: sub assigncustomrole {
10723: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
10724: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
10725: $end,$start,$deleteflag,$selfenroll,$context);
10726: }
10727:
10728: # ----------------------------------------------------------------- Revoke Role
10729:
10730: sub revokerole {
10731: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
10732: my $now=time;
10733: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
10734: }
10735:
10736: # ---------------------------------------------------------- Revoke Custom Role
10737:
10738: sub revokecustomrole {
10739: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
10740: my $now=time;
10741: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
10742: $deleteflag,$selfenroll,$context);
10743: }
10744:
10745: # ------------------------------------------------------------ Disk usage
10746: sub diskusage {
10747: my ($udom,$uname,$directorypath,$getpropath)=@_;
10748: $directorypath =~ s/\/$//;
10749: my $listing=&reply('du2:'.&escape($directorypath).':'
10750: .&escape($getpropath).':'.&escape($uname).':'
10751: .&escape($udom),homeserver($uname,$udom));
10752: if ($listing eq 'unknown_cmd') {
10753: if ($getpropath) {
10754: $directorypath = &propath($udom,$uname).'/'.$directorypath;
10755: }
10756: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
10757: }
10758: return $listing;
10759: }
10760:
10761: sub is_locked {
10762: my ($file_name, $domain, $user, $which) = @_;
10763: my @check;
10764: my $is_locked;
10765: push (@check,$file_name);
10766: my %locked = &get('file_permissions',\@check,
10767: $env{'user.domain'},$env{'user.name'});
10768: my ($tmp)=keys(%locked);
10769: if ($tmp=~/^error:/) { undef(%locked); }
10770:
10771: if (ref($locked{$file_name}) eq 'ARRAY') {
10772: $is_locked = 'false';
10773: foreach my $entry (@{$locked{$file_name}}) {
10774: if (ref($entry) eq 'ARRAY') {
10775: $is_locked = 'true';
10776: if (ref($which) eq 'ARRAY') {
10777: push(@{$which},$entry);
10778: } else {
10779: last;
10780: }
10781: }
10782: }
10783: } else {
10784: $is_locked = 'false';
10785: }
10786: return $is_locked;
10787: }
10788:
10789: sub declutter_portfile {
10790: my ($file) = @_;
10791: $file =~ s{^(/portfolio/|portfolio/)}{/};
10792: return $file;
10793: }
10794:
10795: # ------------------------------------------------------------- Mark as Read Only
10796:
10797: sub mark_as_readonly {
10798: my ($domain,$user,$files,$what) = @_;
10799: my %current_permissions = &dump('file_permissions',$domain,$user);
10800: my ($tmp)=keys(%current_permissions);
10801: if ($tmp=~/^error:/) { undef(%current_permissions); }
10802: foreach my $file (@{$files}) {
10803: $file = &declutter_portfile($file);
10804: push(@{$current_permissions{$file}},$what);
10805: }
10806: &put('file_permissions',\%current_permissions,$domain,$user);
10807: return;
10808: }
10809:
10810: # ------------------------------------------------------------Save Selected Files
10811:
10812: sub save_selected_files {
10813: my ($user, $path, @files) = @_;
10814: my $filename = $user."savedfiles";
10815: my @other_files = &files_not_in_path($user, $path);
10816: open (OUT,'>',LONCAPA::tempdir().$filename);
10817: foreach my $file (@files) {
10818: print (OUT $env{'form.currentpath'}.$file."\n");
10819: }
10820: foreach my $file (@other_files) {
10821: print (OUT $file."\n");
10822: }
10823: close (OUT);
10824: return 'ok';
10825: }
10826:
10827: sub clear_selected_files {
10828: my ($user) = @_;
10829: my $filename = $user."savedfiles";
10830: open (OUT,'>',LONCAPA::tempdir().$filename);
10831: print (OUT undef);
10832: close (OUT);
10833: return ("ok");
10834: }
10835:
10836: sub files_in_path {
10837: my ($user, $path) = @_;
10838: my $filename = $user."savedfiles";
10839: my %return_files;
10840: open (IN,'<',LONCAPA::tempdir().$filename);
10841: while (my $line_in = <IN>) {
10842: chomp ($line_in);
10843: my @paths_and_file = split (m!/!, $line_in);
10844: my $file_part = pop (@paths_and_file);
10845: my $path_part = join ('/', @paths_and_file);
10846: $path_part.='/';
10847: my $path_and_file = $path_part.$file_part;
10848: if ($path_part eq $path) {
10849: $return_files{$file_part}= 'selected';
10850: }
10851: }
10852: close (IN);
10853: return (\%return_files);
10854: }
10855:
10856: # called in portfolio select mode, to show files selected NOT in current directory
10857: sub files_not_in_path {
10858: my ($user, $path) = @_;
10859: my $filename = $user."savedfiles";
10860: my @return_files;
10861: my $path_part;
10862: open(IN, '<',LONCAPA::tempdir().$filename);
10863: while (my $line = <IN>) {
10864: #ok, I know it's clunky, but I want it to work
10865: my @paths_and_file = split(m|/|, $line);
10866: my $file_part = pop(@paths_and_file);
10867: chomp($file_part);
10868: my $path_part = join('/', @paths_and_file);
10869: $path_part .= '/';
10870: my $path_and_file = $path_part.$file_part;
10871: if ($path_part ne $path) {
10872: push(@return_files, ($path_and_file));
10873: }
10874: }
10875: close(OUT);
10876: return (@return_files);
10877: }
10878:
10879: #------------------------------Submitted/Handedback Portfolio Files Versioning
10880:
10881: sub portfiles_versioning {
10882: my ($symb,$domain,$stu_name,$portfiles,$versioned_portfiles) = @_;
10883: my $portfolio_root = '/userfiles/portfolio';
10884: return unless ((ref($portfiles) eq 'ARRAY') && (ref($versioned_portfiles) eq 'ARRAY'));
10885: foreach my $file (@{$portfiles}) {
10886: &unmark_as_readonly($domain,$stu_name,[$symb,$env{'request.course.id'}],$file);
10887: my ($directory,$answer_file) =($file =~ /^(.*?)([^\/]*)$/);
10888: my ($answer_name,$answer_ver,$answer_ext) = &file_name_version_ext($answer_file);
10889: my $getpropath = 1;
10890: my ($dir_list,$listerror) = &dirlist($portfolio_root.$directory,$domain,
10891: $stu_name,$getpropath);
10892: my $version = &get_next_version($answer_name,$answer_ext,$dir_list);
10893: my $new_answer =
10894: &version_selected_portfile($domain,$stu_name,$directory,$answer_file,$version);
10895: if ($new_answer ne 'problem getting file') {
10896: push(@{$versioned_portfiles}, $directory.$new_answer);
10897: &mark_as_readonly($domain,$stu_name,[$directory.$new_answer],
10898: [$symb,$env{'request.course.id'},'graded']);
10899: }
10900: }
10901: }
10902:
10903: sub get_next_version {
10904: my ($answer_name, $answer_ext, $dir_list) = @_;
10905: my $version;
10906: if (ref($dir_list) eq 'ARRAY') {
10907: foreach my $row (@{$dir_list}) {
10908: my ($file) = split(/\&/,$row,2);
10909: my ($file_name,$file_version,$file_ext) =
10910: &file_name_version_ext($file);
10911: if (($file_name eq $answer_name) &&
10912: ($file_ext eq $answer_ext)) {
10913: # gets here if filename and extension match,
10914: # regardless of version
10915: if ($file_version ne '') {
10916: # a versioned file is found so save it for later
10917: if ($file_version > $version) {
10918: $version = $file_version;
10919: }
10920: }
10921: }
10922: }
10923: }
10924: $version ++;
10925: return($version);
10926: }
10927:
10928: sub version_selected_portfile {
10929: my ($domain,$stu_name,$directory,$file_name,$version) = @_;
10930: my ($answer_name,$answer_ver,$answer_ext) =
10931: &file_name_version_ext($file_name);
10932: my $new_answer;
10933: $env{'form.copy'} =
10934: &getfile("/uploaded/$domain/$stu_name/portfolio$directory$file_name");
10935: if($env{'form.copy'} eq '-1') {
10936: $new_answer = 'problem getting file';
10937: } else {
10938: $new_answer = $answer_name.'.'.$version.'.'.$answer_ext;
10939: my $copy_result =
10940: &finishuserfileupload($stu_name,$domain,'copy',
10941: '/portfolio'.$directory.$new_answer);
10942: }
10943: undef($env{'form.copy'});
10944: return ($new_answer);
10945: }
10946:
10947: sub file_name_version_ext {
10948: my ($file)=@_;
10949: my @file_parts = split(/\./, $file);
10950: my ($name,$version,$ext);
10951: if (@file_parts > 1) {
10952: $ext=pop(@file_parts);
10953: if (@file_parts > 1 && $file_parts[-1] =~ /^\d+$/) {
10954: $version=pop(@file_parts);
10955: }
10956: $name=join('.',@file_parts);
10957: } else {
10958: $name=join('.',@file_parts);
10959: }
10960: return($name,$version,$ext);
10961: }
10962:
10963: #----------------------------------------------Get portfolio file permissions
10964:
10965: sub get_portfile_permissions {
10966: my ($domain,$user) = @_;
10967: my %current_permissions = &dump('file_permissions',$domain,$user);
10968: my ($tmp)=keys(%current_permissions);
10969: if ($tmp=~/^error:/) { undef(%current_permissions); }
10970: return \%current_permissions;
10971: }
10972:
10973: #---------------------------------------------Get portfolio file access controls
10974:
10975: sub get_access_controls {
10976: my ($current_permissions,$group,$file) = @_;
10977: my %access;
10978: my $real_file = $file;
10979: $file =~ s/\.meta$//;
10980: if (defined($file)) {
10981: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
10982: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
10983: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
10984: }
10985: }
10986: } else {
10987: foreach my $key (keys(%{$current_permissions})) {
10988: if ($key =~ /\0accesscontrol$/) {
10989: if (defined($group)) {
10990: if ($key !~ m-^\Q$group\E/-) {
10991: next;
10992: }
10993: }
10994: my ($fullpath) = split(/\0/,$key);
10995: if (ref($$current_permissions{$key}) eq 'HASH') {
10996: foreach my $control (keys(%{$$current_permissions{$key}})) {
10997: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
10998: }
10999: }
11000: }
11001: }
11002: }
11003: return %access;
11004: }
11005:
11006: sub modify_access_controls {
11007: my ($file_name,$changes,$domain,$user)=@_;
11008: my ($outcome,$deloutcome);
11009: my %store_permissions;
11010: my %new_values;
11011: my %new_control;
11012: my %translation;
11013: my @deletions = ();
11014: my $now = time;
11015: if (exists($$changes{'activate'})) {
11016: if (ref($$changes{'activate'}) eq 'HASH') {
11017: my @newitems = sort(keys(%{$$changes{'activate'}}));
11018: my $numnew = scalar(@newitems);
11019: for (my $i=0; $i<$numnew; $i++) {
11020: my $newkey = $newitems[$i];
11021: my $newid = &Apache::loncommon::get_cgi_id();
11022: if ($newkey =~ /^\d+:/) {
11023: $newkey =~ s/^(\d+)/$newid/;
11024: $translation{$1} = $newid;
11025: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
11026: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
11027: $translation{$1} = $newid;
11028: }
11029: $new_values{$file_name."\0".$newkey} =
11030: $$changes{'activate'}{$newitems[$i]};
11031: $new_control{$newkey} = $now;
11032: }
11033: }
11034: }
11035: my %todelete;
11036: my %changed_items;
11037: foreach my $action ('delete','update') {
11038: if (exists($$changes{$action})) {
11039: if (ref($$changes{$action}) eq 'HASH') {
11040: foreach my $key (keys(%{$$changes{$action}})) {
11041: my ($itemnum) = ($key =~ /^([^:]+):/);
11042: if ($action eq 'delete') {
11043: $todelete{$itemnum} = 1;
11044: } else {
11045: $changed_items{$itemnum} = $key;
11046: }
11047: }
11048: }
11049: }
11050: }
11051: # get lock on access controls for file.
11052: my $lockhash = {
11053: $file_name."\0".'locked_access_records' => $env{'user.name'}.
11054: ':'.$env{'user.domain'},
11055: };
11056: my $tries = 0;
11057: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
11058:
11059: while (($gotlock ne 'ok') && $tries < 10) {
11060: $tries ++;
11061: sleep(0.1);
11062: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
11063: }
11064: if ($gotlock eq 'ok') {
11065: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
11066: my ($tmp)=keys(%curr_permissions);
11067: if ($tmp=~/^error:/) { undef(%curr_permissions); }
11068: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
11069: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
11070: if (ref($curr_controls) eq 'HASH') {
11071: foreach my $control_item (keys(%{$curr_controls})) {
11072: my ($itemnum) = ($control_item =~ /^([^:]+):/);
11073: if (defined($todelete{$itemnum})) {
11074: push(@deletions,$file_name."\0".$control_item);
11075: } else {
11076: if (defined($changed_items{$itemnum})) {
11077: $new_control{$changed_items{$itemnum}} = $now;
11078: push(@deletions,$file_name."\0".$control_item);
11079: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
11080: } else {
11081: $new_control{$control_item} = $$curr_controls{$control_item};
11082: }
11083: }
11084: }
11085: }
11086: }
11087: my ($group);
11088: if (&is_course($domain,$user)) {
11089: ($group,my $file) = split(/\//,$file_name,2);
11090: }
11091: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
11092: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
11093: $outcome = &put('file_permissions',\%new_values,$domain,$user);
11094: # remove lock
11095: my @del_lock = ($file_name."\0".'locked_access_records');
11096: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
11097: my $sqlresult =
11098: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
11099: $group);
11100: } else {
11101: $outcome = "error: could not obtain lockfile\n";
11102: }
11103: return ($outcome,$deloutcome,\%new_values,\%translation);
11104: }
11105:
11106: sub make_public_indefinitely {
11107: my (@requrl) = @_;
11108: return &automated_portfile_access('public',\@requrl);
11109: }
11110:
11111: sub automated_portfile_access {
11112: my ($accesstype,$addsref,$delsref,$info) = @_;
11113: unless (($accesstype eq 'public') || ($accesstype eq 'ip')) {
11114: return 'invalid';
11115: }
11116: my %urls;
11117: if (ref($addsref) eq 'ARRAY') {
11118: foreach my $requrl (@{$addsref}) {
11119: if (&is_portfolio_url($requrl)) {
11120: unless (exists($urls{$requrl})) {
11121: $urls{$requrl} = 'add';
11122: }
11123: }
11124: }
11125: }
11126: if (ref($delsref) eq 'ARRAY') {
11127: foreach my $requrl (@{$delsref}) {
11128: if (&is_portfolio_url($requrl)) {
11129: unless (exists($urls{$requrl})) {
11130: $urls{$requrl} = 'delete';
11131: }
11132: }
11133: }
11134: }
11135: unless (keys(%urls)) {
11136: return 'invalid';
11137: }
11138: my $ip;
11139: if ($accesstype eq 'ip') {
11140: if (ref($info) eq 'HASH') {
11141: if ($info->{'ip'} ne '') {
11142: $ip = $info->{'ip'};
11143: }
11144: }
11145: if ($ip eq '') {
11146: return 'invalid';
11147: }
11148: }
11149: my $errors;
11150: my $now = time;
11151: my %current_perms;
11152: foreach my $requrl (sort(keys(%urls))) {
11153: my $action;
11154: if ($urls{$requrl} eq 'add') {
11155: $action = 'activate';
11156: } else {
11157: $action = 'none';
11158: }
11159: my $aclnum = 0;
11160: my (undef,$udom,$unum,$file_name,$group) =
11161: &parse_portfolio_url($requrl);
11162: unless (exists($current_perms{$unum.':'.$udom})) {
11163: $current_perms{$unum.':'.$udom} = &get_portfile_permissions($udom,$unum);
11164: }
11165: my %access_controls = &get_access_controls($current_perms{$unum.':'.$udom},
11166: $group,$file_name);
11167: foreach my $key (keys(%{$access_controls{$file_name}})) {
11168: my ($num,$scope,$end,$start) =
11169: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
11170: if ($scope eq $accesstype) {
11171: if (($start <= $now) && ($end == 0)) {
11172: if ($accesstype eq 'ip') {
11173: if (ref($access_controls{$file_name}{$key}) eq 'HASH') {
11174: if (ref($access_controls{$file_name}{$key}{'ip'}) eq 'ARRAY') {
11175: if (grep(/^\Q$ip\E$/,@{$access_controls{$file_name}{$key}{'ip'}})) {
11176: if ($urls{$requrl} eq 'add') {
11177: $action = 'none';
11178: last;
11179: } else {
11180: $action = 'delete';
11181: $aclnum = $num;
11182: last;
11183: }
11184: }
11185: }
11186: }
11187: } elsif ($accesstype eq 'public') {
11188: if ($urls{$requrl} eq 'add') {
11189: $action = 'none';
11190: last;
11191: } else {
11192: $action = 'delete';
11193: $aclnum = $num;
11194: last;
11195: }
11196: }
11197: } elsif ($accesstype eq 'public') {
11198: $action = 'update';
11199: $aclnum = $num;
11200: last;
11201: }
11202: }
11203: }
11204: if ($action eq 'none') {
11205: next;
11206: } else {
11207: my %changes;
11208: my $newend = 0;
11209: my $newstart = $now;
11210: my $newkey = $aclnum.':'.$accesstype.'_'.$newend.'_'.$newstart;
11211: $changes{$action}{$newkey} = {
11212: type => $accesstype,
11213: time => {
11214: start => $newstart,
11215: end => $newend,
11216: },
11217: };
11218: if ($accesstype eq 'ip') {
11219: $changes{$action}{$newkey}{'ip'} = [$ip];
11220: }
11221: my ($outcome,$deloutcome,$new_values,$translation) =
11222: &modify_access_controls($file_name,\%changes,$udom,$unum);
11223: unless ($outcome eq 'ok') {
11224: $errors .= $outcome.' ';
11225: }
11226: }
11227: }
11228: if ($errors) {
11229: $errors =~ s/\s$//;
11230: return $errors;
11231: } else {
11232: return 'ok';
11233: }
11234: }
11235:
11236: #------------------------------------------------------Get Marked as Read Only
11237:
11238: sub get_marked_as_readonly {
11239: my ($domain,$user,$what,$group) = @_;
11240: my $current_permissions = &get_portfile_permissions($domain,$user);
11241: my @readonly_files;
11242: my $cmp1=$what;
11243: if (ref($what)) { $cmp1=join('',@{$what}) };
11244: while (my ($file_name,$value) = each(%{$current_permissions})) {
11245: if (defined($group)) {
11246: if ($file_name !~ m-^\Q$group\E/-) {
11247: next;
11248: }
11249: }
11250: if (ref($value) eq "ARRAY"){
11251: foreach my $stored_what (@{$value}) {
11252: my $cmp2=$stored_what;
11253: if (ref($stored_what) eq 'ARRAY') {
11254: $cmp2=join('',@{$stored_what});
11255: }
11256: if ($cmp1 eq $cmp2) {
11257: push(@readonly_files, $file_name);
11258: last;
11259: } elsif (!defined($what)) {
11260: push(@readonly_files, $file_name);
11261: last;
11262: }
11263: }
11264: }
11265: }
11266: return @readonly_files;
11267: }
11268: #-----------------------------------------------------------Get Marked as Read Only Hash
11269:
11270: sub get_marked_as_readonly_hash {
11271: my ($current_permissions,$group,$what) = @_;
11272: my %readonly_files;
11273: while (my ($file_name,$value) = each(%{$current_permissions})) {
11274: if (defined($group)) {
11275: if ($file_name !~ m-^\Q$group\E/-) {
11276: next;
11277: }
11278: }
11279: if (ref($value) eq "ARRAY"){
11280: foreach my $stored_what (@{$value}) {
11281: if (ref($stored_what) eq 'ARRAY') {
11282: foreach my $lock_descriptor(@{$stored_what}) {
11283: if ($lock_descriptor eq 'graded') {
11284: $readonly_files{$file_name} = 'graded';
11285: } elsif ($lock_descriptor eq 'handback') {
11286: $readonly_files{$file_name} = 'handback';
11287: } else {
11288: if (!exists($readonly_files{$file_name})) {
11289: $readonly_files{$file_name} = 'locked';
11290: }
11291: }
11292: }
11293: }
11294: }
11295: }
11296: }
11297: return %readonly_files;
11298: }
11299: # ------------------------------------------------------------ Unmark as Read Only
11300:
11301: sub unmark_as_readonly {
11302: # unmarks $file_name (if $file_name is defined), or all files locked by $what
11303: # for portfolio submissions, $what contains [$symb,$crsid]
11304: my ($domain,$user,$what,$file_name,$group) = @_;
11305: $file_name = &declutter_portfile($file_name);
11306: my $symb_crs = $what;
11307: if (ref($what)) { $symb_crs=join('',@$what); }
11308: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
11309: my ($tmp)=keys(%current_permissions);
11310: if ($tmp=~/^error:/) { undef(%current_permissions); }
11311: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
11312: foreach my $file (@readonly_files) {
11313: my $clean_file = &declutter_portfile($file);
11314: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
11315: my $current_locks = $current_permissions{$file};
11316: my @new_locks;
11317: my @del_keys;
11318: if (ref($current_locks) eq "ARRAY"){
11319: foreach my $locker (@{$current_locks}) {
11320: my $compare=$locker;
11321: if (ref($locker) eq 'ARRAY') {
11322: $compare=join('',@{$locker});
11323: if ($compare ne $symb_crs) {
11324: push(@new_locks, $locker);
11325: }
11326: }
11327: }
11328: if (scalar(@new_locks) > 0) {
11329: $current_permissions{$file} = \@new_locks;
11330: } else {
11331: push(@del_keys, $file);
11332: &del('file_permissions',\@del_keys, $domain, $user);
11333: delete($current_permissions{$file});
11334: }
11335: }
11336: }
11337: &put('file_permissions',\%current_permissions,$domain,$user);
11338: return;
11339: }
11340:
11341: # ------------------------------------------------------------ Directory lister
11342:
11343: sub dirlist {
11344: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
11345: $uri=~s/^\///;
11346: $uri=~s/\/$//;
11347: my ($udom, $uname);
11348: if ($getuserdir) {
11349: $udom = $userdomain;
11350: $uname = $username;
11351: } else {
11352: (undef,$udom,$uname)=split(/\//,$uri);
11353: if(defined($userdomain)) {
11354: $udom = $userdomain;
11355: }
11356: if(defined($username)) {
11357: $uname = $username;
11358: }
11359: }
11360: my ($dirRoot,$listing,@listing_results);
11361:
11362: $dirRoot = $perlvar{'lonDocRoot'};
11363: if (defined($getpropath)) {
11364: $dirRoot = &propath($udom,$uname);
11365: $dirRoot =~ s/\/$//;
11366: } elsif (defined($getuserdir)) {
11367: my $subdir=$uname.'__';
11368: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
11369: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
11370: ."/$udom/$subdir/$uname";
11371: } elsif (defined($alternateRoot)) {
11372: $dirRoot = $alternateRoot;
11373: }
11374:
11375: if($udom) {
11376: if($uname) {
11377: my $uhome = &homeserver($uname,$udom);
11378: if ($uhome eq 'no_host') {
11379: return ([],'no_host');
11380: }
11381: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
11382: .$getuserdir.':'.&escape($dirRoot)
11383: .':'.&escape($uname).':'.&escape($udom),$uhome);
11384: if ($listing eq 'unknown_cmd') {
11385: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
11386: } else {
11387: @listing_results = map { &unescape($_); } split(/:/,$listing);
11388: }
11389: if ($listing eq 'unknown_cmd') {
11390: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
11391: @listing_results = split(/:/,$listing);
11392: } else {
11393: @listing_results = map { &unescape($_); } split(/:/,$listing);
11394: }
11395: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
11396: ($listing eq 'rejected') || ($listing eq 'refused') ||
11397: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
11398: return ([],$listing);
11399: } else {
11400: return (\@listing_results);
11401: }
11402: } elsif(!$alternateRoot) {
11403: my (%allusers,%listerror);
11404: my %servers = &get_servers($udom,'library');
11405: foreach my $tryserver (keys(%servers)) {
11406: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
11407: &escape($udom),$tryserver);
11408: if ($listing eq 'unknown_cmd') {
11409: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
11410: $udom, $tryserver);
11411: } else {
11412: @listing_results = map { &unescape($_); } split(/:/,$listing);
11413: }
11414: if ($listing eq 'unknown_cmd') {
11415: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
11416: $udom, $tryserver);
11417: @listing_results = split(/:/,$listing);
11418: } else {
11419: @listing_results =
11420: map { &unescape($_); } split(/:/,$listing);
11421: }
11422: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
11423: ($listing eq 'rejected') || ($listing eq 'refused') ||
11424: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
11425: $listerror{$tryserver} = $listing;
11426: } else {
11427: foreach my $line (@listing_results) {
11428: my ($entry) = split(/&/,$line,2);
11429: $allusers{$entry} = 1;
11430: }
11431: }
11432: }
11433: my @alluserslist=();
11434: foreach my $user (sort(keys(%allusers))) {
11435: push(@alluserslist,$user.'&user');
11436: }
11437:
11438: if (!%listerror) {
11439: # no errors
11440: return (\@alluserslist);
11441: } elsif (scalar(keys(%servers)) == 1) {
11442: # one library server, one error
11443: my ($key) = keys(%listerror);
11444: return (\@alluserslist, $listerror{$key});
11445: } elsif ( grep { $_ eq 'con_lost' } values(%listerror) ) {
11446: # con_lost indicates that we might miss data from at least one
11447: # library server
11448: return (\@alluserslist, 'con_lost');
11449: } else {
11450: # multiple library servers and no con_lost -> data should be
11451: # complete.
11452: return (\@alluserslist);
11453: }
11454:
11455: } else {
11456: return ([],'missing username');
11457: }
11458: } elsif(!defined($getpropath)) {
11459: my $path = $perlvar{'lonDocRoot'}.'/res/';
11460: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
11461: return (\@all_domains);
11462: } else {
11463: return ([],'missing domain');
11464: }
11465: }
11466:
11467: # --------------------------------------------- GetFileTimestamp
11468: # This function utilizes dirlist and returns the date stamp for
11469: # when it was last modified. It will also return an error of -1
11470: # if an error occurs
11471:
11472: sub GetFileTimestamp {
11473: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
11474: $studentDomain = &LONCAPA::clean_domain($studentDomain);
11475: $studentName = &LONCAPA::clean_username($studentName);
11476: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
11477: undef,$getuserdir);
11478: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
11479: return -1;
11480: }
11481: if (ref($fileref) eq 'ARRAY') {
11482: my @stats = split('&',$fileref->[0]);
11483: # @stats contains first the filename, then the stat output
11484: return $stats[10]; # so this is 10 instead of 9.
11485: } else {
11486: return -1;
11487: }
11488: }
11489:
11490: sub stat_file {
11491: my ($uri) = @_;
11492: $uri = &clutter_with_no_wrapper($uri);
11493:
11494: my ($udom,$uname,$file);
11495: if ($uri =~ m-^/(uploaded|editupload)/-) {
11496: ($udom,$uname,$file) =
11497: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
11498: $file = 'userfiles/'.$file;
11499: }
11500: if ($uri =~ m-^/res/-) {
11501: ($udom,$uname) =
11502: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
11503: $file = $uri;
11504: }
11505:
11506: if (!$udom || !$uname || !$file) {
11507: # unable to handle the uri
11508: return ();
11509: }
11510: my $getpropath;
11511: if ($file =~ /^userfiles\//) {
11512: $getpropath = 1;
11513: }
11514: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
11515: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
11516: return ();
11517: } else {
11518: if (ref($listref) eq 'ARRAY') {
11519: my @stats = split('&',$listref->[0]);
11520: shift(@stats); #filename is first
11521: return @stats;
11522: }
11523: }
11524: return ();
11525: }
11526:
11527: # --------------------------------------------------------- recursedirs
11528: # Recursive function to traverse either a specific user's Authoring Space
11529: # or corresponding Published Resource Space, and populate the hash ref:
11530: # $dirhashref with URLs of all directories, and if $filehashref hash
11531: # ref arg is provided, the URLs of any files, excluding versioned, .meta,
11532: # or .rights files in resource space, and .meta, .save, .log, and .bak
11533: # files in Authoring Space.
11534: #
11535: # Inputs:
11536: #
11537: # $is_home - true if current server is home server for user's space
11538: # $context - either: priv, or res respectively for Authoring or Resource Space.
11539: # $docroot - Document root (i.e., /home/httpd/html
11540: # $toppath - Top level directory (i.e., /res/$dom/$uname or /priv/$dom/$uname
11541: # $relpath - Current path (relative to top level).
11542: # $dirhashref - reference to hash to populate with URLs of directories (Required)
11543: # $filehashref - reference to hash to populate with URLs of files (Optional)
11544: #
11545: # Returns: nothing
11546: #
11547: # Side Effects: populates $dirhashref, and $filehashref (if provided).
11548: #
11549: # Currently used by interface/londocs.pm to create linked select boxes for
11550: # directory and filename to import a Course "Author" resource into a course, and
11551: # also to create linked select boxes for Authoring Space and Directory to choose
11552: # save location for creation of a new "standard" problem from the Course Editor.
11553: #
11554:
11555: sub recursedirs {
11556: my ($is_home,$context,$docroot,$toppath,$relpath,$dirhashref,$filehashref) = @_;
11557: return unless (ref($dirhashref) eq 'HASH');
11558: my $currpath = $docroot.$toppath;
11559: if ($relpath) {
11560: $currpath .= "/$relpath";
11561: }
11562: my $savefile;
11563: if (ref($filehashref)) {
11564: $savefile = 1;
11565: }
11566: if ($is_home) {
11567: if (opendir(my $dirh,$currpath)) {
11568: foreach my $item (sort { lc($a) cmp lc($b) } grep(!/^\.+$/,readdir($dirh))) {
11569: next if ($item eq '');
11570: if (-d "$currpath/$item") {
11571: my $newpath;
11572: if ($relpath) {
11573: $newpath = "$relpath/$item";
11574: } else {
11575: $newpath = $item;
11576: }
11577: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
11578: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
11579: } elsif ($savefile) {
11580: if ($context eq 'priv') {
11581: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
11582: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
11583: }
11584: } else {
11585: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/) || ($item =~ /\.rights$/)) {
11586: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
11587: }
11588: }
11589: }
11590: }
11591: closedir($dirh);
11592: }
11593: } else {
11594: my ($dirlistref,$listerror) =
11595: &dirlist($toppath.$relpath);
11596: my @dir_lines;
11597: my $dirptr=16384;
11598: if (ref($dirlistref) eq 'ARRAY') {
11599: foreach my $dir_line (sort
11600: {
11601: my ($afile)=split('&',$a,2);
11602: my ($bfile)=split('&',$b,2);
11603: return (lc($afile) cmp lc($bfile));
11604: } (@{$dirlistref})) {
11605: my ($item,$dom,undef,$testdir,undef,undef,undef,undef,$size,undef,$mtime,undef,undef,undef,$obs,undef) =
11606: split(/\&/,$dir_line,16);
11607: $item =~ s/\s+$//;
11608: next if (($item =~ /^\.\.?$/) || ($obs));
11609: if ($dirptr&$testdir) {
11610: my $newpath;
11611: if ($relpath) {
11612: $newpath = "$relpath/$item";
11613: } else {
11614: $relpath = '/';
11615: $newpath = $item;
11616: }
11617: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
11618: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
11619: } elsif ($savefile) {
11620: if ($context eq 'priv') {
11621: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
11622: $filehashref->{$relpath}{$item} = 1;
11623: }
11624: } else {
11625: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/)) {
11626: $filehashref->{$relpath}{$item} = 1;
11627: }
11628: }
11629: }
11630: }
11631: }
11632: }
11633: return;
11634: }
11635:
11636: # -------------------------------------------------------- Value of a Condition
11637:
11638: # gets the value of a specific preevaluated condition
11639: # stored in the string $env{user.state.<cid>}
11640: # or looks up a condition reference in the bighash and if if hasn't
11641: # already been evaluated recurses into docondval to get the value of
11642: # the condition, then memoizing it to
11643: # $env{user.state.<cid>.<condition>}
11644: sub directcondval {
11645: my $number=shift;
11646: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
11647: &Apache::lonuserstate::evalstate();
11648: }
11649: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
11650: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
11651: } elsif ($number =~ /^_/) {
11652: my $sub_condition;
11653: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11654: &GDBM_READER(),0640)) {
11655: $sub_condition=$bighash{'conditions'.$number};
11656: untie(%bighash);
11657: }
11658: my $value = &docondval($sub_condition);
11659: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
11660: return $value;
11661: }
11662: if ($env{'user.state.'.$env{'request.course.id'}}) {
11663: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
11664: } else {
11665: return 2;
11666: }
11667: }
11668:
11669: # get the collection of conditions for this resource
11670: sub condval {
11671: my $condidx=shift;
11672: my $allpathcond='';
11673: foreach my $cond (split(/\|/,$condidx)) {
11674: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
11675: $allpathcond.=
11676: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
11677: }
11678: }
11679: $allpathcond=~s/\|$//;
11680: return &docondval($allpathcond);
11681: }
11682:
11683: #evaluates an expression of conditions
11684: sub docondval {
11685: my ($allpathcond) = @_;
11686: my $result=0;
11687: if ($env{'request.course.id'}
11688: && defined($allpathcond)) {
11689: my $operand='|';
11690: my @stack;
11691: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
11692: if ($chunk eq '(') {
11693: push @stack,($operand,$result);
11694: } elsif ($chunk eq ')') {
11695: my $before=pop @stack;
11696: if (pop @stack eq '&') {
11697: $result=$result>$before?$before:$result;
11698: } else {
11699: $result=$result>$before?$result:$before;
11700: }
11701: } elsif (($chunk eq '&') || ($chunk eq '|')) {
11702: $operand=$chunk;
11703: } else {
11704: my $new=directcondval($chunk);
11705: if ($operand eq '&') {
11706: $result=$result>$new?$new:$result;
11707: } else {
11708: $result=$result>$new?$result:$new;
11709: }
11710: }
11711: }
11712: }
11713: return $result;
11714: }
11715:
11716: # ---------------------------------------------------- Devalidate courseresdata
11717:
11718: sub devalidatecourseresdata {
11719: my ($coursenum,$coursedomain)=@_;
11720: my $hashid=$coursenum.':'.$coursedomain;
11721: &devalidate_cache_new('courseres',$hashid);
11722: }
11723:
11724:
11725: # --------------------------------------------------- Course Resourcedata Query
11726: #
11727: # Parameters:
11728: # $coursenum - Number of the course.
11729: # $coursedomain - Domain at which the course was created.
11730: # Returns:
11731: # A hash of the course parameters along (I think) with timestamps
11732: # and version info.
11733:
11734: sub get_courseresdata {
11735: my ($coursenum,$coursedomain)=@_;
11736: my $coursehom=&homeserver($coursenum,$coursedomain);
11737: my $hashid=$coursenum.':'.$coursedomain;
11738: my ($result,$cached)=&is_cached_new('courseres',$hashid);
11739: my %dumpreply;
11740: unless (defined($cached)) {
11741: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
11742: $result=\%dumpreply;
11743: my ($tmp) = keys(%dumpreply);
11744: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
11745: &do_cache_new('courseres',$hashid,$result,600);
11746: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
11747: return $tmp;
11748: } elsif ($tmp =~ /^(error)/) {
11749: $result=undef;
11750: &do_cache_new('courseres',$hashid,$result,600);
11751: }
11752: }
11753: return $result;
11754: }
11755:
11756: sub devalidateuserresdata {
11757: my ($uname,$udom)=@_;
11758: my $hashid="$udom:$uname";
11759: &devalidate_cache_new('userres',$hashid);
11760: }
11761:
11762: sub get_userresdata {
11763: my ($uname,$udom)=@_;
11764: #most student don\'t have any data set, check if there is some data
11765: if (&EXT_cache_status($udom,$uname)) { return undef; }
11766:
11767: my $hashid="$udom:$uname";
11768: my ($result,$cached)=&is_cached_new('userres',$hashid);
11769: if (!defined($cached)) {
11770: my %resourcedata=&dump('resourcedata',$udom,$uname);
11771: $result=\%resourcedata;
11772: &do_cache_new('userres',$hashid,$result,600);
11773: }
11774: my ($tmp)=keys(%$result);
11775: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
11776: return $result;
11777: }
11778: #error 2 occurs when the .db doesn't exist
11779: if ($tmp!~/error: 2 /) {
11780: if ((!defined($cached)) || ($tmp ne 'con_lost')) {
11781: &logthis("<font color=\"blue\">WARNING:".
11782: " Trying to get resource data for ".
11783: $uname." at ".$udom.": ".
11784: $tmp."</font>");
11785: }
11786: } elsif ($tmp=~/error: 2 /) {
11787: #&EXT_cache_set($udom,$uname);
11788: &do_cache_new('userres',$hashid,undef,600);
11789: undef($tmp); # not really an error so don't send it back
11790: }
11791: return $tmp;
11792: }
11793: #----------------------------------------------- resdata - return resource data
11794: # Purpose:
11795: # Return resource data for either users or for a course.
11796: # Parameters:
11797: # $name - Course/user name.
11798: # $domain - Name of the domain the user/course is registered on.
11799: # $type - Type of thing $name is (must be 'course' or 'user')
11800: # $mapp - decluttered URL of enclosing map
11801: # $recursed - Ref to scalar -- set to 1, if nested maps have been recursed.
11802: # $recurseup - Ref to array of map URLs, starting with map containing
11803: # $mapp up through hierarchy of nested maps to top level map.
11804: # $courseid - CourseID (first part of param identifier).
11805: # $modifier - Middle part of param identifier.
11806: # $what - Last part of param identifier.
11807: # @which - Array of names of resources desired.
11808: # Returns:
11809: # The value of the first reasource in @which that is found in the
11810: # resource hash.
11811: # Exceptional Conditions:
11812: # If the $type passed in is not valid (not the string 'course' or
11813: # 'user', an undefined reference is returned.
11814: # If none of the resources are found, an undef is returned
11815: sub resdata {
11816: my ($name,$domain,$type,$mapp,$recursed,$recurseup,$courseid,
11817: $modifier,$what,@which)=@_;
11818: my $result;
11819: if ($type eq 'course') {
11820: $result=&get_courseresdata($name,$domain);
11821: } elsif ($type eq 'user') {
11822: $result=&get_userresdata($name,$domain);
11823: }
11824: if (!ref($result)) { return $result; }
11825: foreach my $item (@which) {
11826: if ($item->[1] eq 'course') {
11827: if ((ref($recurseup) eq 'ARRAY') && (ref($recursed) eq 'SCALAR')) {
11828: unless ($$recursed) {
11829: @{$recurseup} = &get_map_hierarchy($mapp,$courseid);
11830: $$recursed = 1;
11831: }
11832: foreach my $item (@${recurseup}) {
11833: my $norecursechk=$courseid.$modifier.$item.'___(all).'.$what;
11834: last if (defined($result->{$norecursechk}));
11835: my $recursechk=$courseid.$modifier.$item.'___(rec).'.$what;
11836: if (defined($result->{$recursechk})) { return [$result->{$recursechk},'map']; }
11837: }
11838: }
11839: }
11840: if (defined($result->{$item->[0]})) {
11841: return [$result->{$item->[0]},$item->[1]];
11842: }
11843: }
11844: return undef;
11845: }
11846:
11847: sub get_domain_lti {
11848: my ($cdom,$context) = @_;
11849: my ($name,%lti);
11850: if ($context eq 'consumer') {
11851: $name = 'ltitools';
11852: } elsif ($context eq 'provider') {
11853: $name = 'lti';
11854: } else {
11855: return %lti;
11856: }
11857: my ($result,$cached)=&is_cached_new($name,$cdom);
11858: if (defined($cached)) {
11859: if (ref($result) eq 'HASH') {
11860: %lti = %{$result};
11861: }
11862: } else {
11863: my %domconfig = &get_dom('configuration',[$name],$cdom);
11864: if (ref($domconfig{$name}) eq 'HASH') {
11865: %lti = %{$domconfig{$name}};
11866: my %encdomconfig = &get_dom('encconfig',[$name],$cdom);
11867: if (ref($encdomconfig{$name}) eq 'HASH') {
11868: foreach my $id (keys(%lti)) {
11869: if (ref($encdomconfig{$name}{$id}) eq 'HASH') {
11870: foreach my $item ('key','secret') {
11871: $lti{$id}{$item} = $encdomconfig{$name}{$id}{$item};
11872: }
11873: }
11874: }
11875: }
11876: }
11877: my $cachetime = 24*60*60;
11878: &do_cache_new($name,$cdom,\%lti,$cachetime);
11879: }
11880: return %lti;
11881: }
11882:
11883: sub get_numsuppfiles {
11884: my ($cnum,$cdom,$ignorecache)=@_;
11885: my $hashid=$cnum.':'.$cdom;
11886: my ($suppcount,$cached);
11887: unless ($ignorecache) {
11888: ($suppcount,$cached) = &is_cached_new('suppcount',$hashid);
11889: }
11890: unless (defined($cached)) {
11891: my $chome=&homeserver($cnum,$cdom);
11892: unless ($chome eq 'no_host') {
11893: ($suppcount,my $supptools,my $errors) = (0,0,0);
11894: my $suppmap = 'supplemental.sequence';
11895: ($suppcount,$supptools,$errors) =
11896: &Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,
11897: $supptools,$errors);
11898: }
11899: &do_cache_new('suppcount',$hashid,$suppcount,600);
11900: }
11901: return $suppcount;
11902: }
11903:
11904: #
11905: # EXT resource caching routines
11906: #
11907:
11908: {
11909: # Cache (5 seconds) of map hierarchy for speedup of navmaps display
11910: #
11911: # The course for which we cache
11912: my $cachedmapkey='';
11913: # The cached recursive maps for this course
11914: my %cachedmaps=();
11915: # When this was last done
11916: my $cachedmaptime='';
11917:
11918: sub clear_EXT_cache_status {
11919: &delenv('cache.EXT.');
11920: }
11921:
11922: sub EXT_cache_status {
11923: my ($target_domain,$target_user) = @_;
11924: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
11925: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
11926: # We know already the user has no data
11927: return 1;
11928: } else {
11929: return 0;
11930: }
11931: }
11932:
11933: sub EXT_cache_set {
11934: my ($target_domain,$target_user) = @_;
11935: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
11936: #&appenv({$cachename => time});
11937: }
11938:
11939: # --------------------------------------------------------- Value of a Variable
11940: sub EXT {
11941:
11942: my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid)=@_;
11943: unless ($varname) { return ''; }
11944: #get real user name/domain, courseid and symb
11945: my $courseid;
11946: my $publicuser;
11947: if ($symbparm) {
11948: $symbparm=&get_symb_from_alias($symbparm);
11949: }
11950: if (!($uname && $udom)) {
11951: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
11952: if (!$symbparm) { $symbparm=$cursymb; }
11953: } else {
11954: $courseid=$env{'request.course.id'};
11955: }
11956: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
11957: my $rest;
11958: if (defined($therest[0])) {
11959: $rest=join('.',@therest);
11960: } else {
11961: $rest='';
11962: }
11963:
11964: my $qualifierrest=$qualifier;
11965: if ($rest) { $qualifierrest.='.'.$rest; }
11966: my $spacequalifierrest=$space;
11967: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
11968: if ($realm eq 'user') {
11969: # --------------------------------------------------------------- user.resource
11970: if ($space eq 'resource') {
11971: if ( (defined($Apache::lonhomework::parsing_a_problem)
11972: || defined($Apache::lonhomework::parsing_a_task))
11973: &&
11974: ($symbparm eq &symbread()) ) {
11975: # if we are in the middle of processing the resource the
11976: # get the value we are planning on committing
11977: if (defined($Apache::lonhomework::results{$qualifierrest})) {
11978: return $Apache::lonhomework::results{$qualifierrest};
11979: } else {
11980: return $Apache::lonhomework::history{$qualifierrest};
11981: }
11982: } else {
11983: my %restored;
11984: if ($publicuser || $env{'request.state'} eq 'construct') {
11985: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
11986: } else {
11987: %restored=&restore($symbparm,$courseid,$udom,$uname);
11988: }
11989: return $restored{$qualifierrest};
11990: }
11991: # ----------------------------------------------------------------- user.access
11992: } elsif ($space eq 'access') {
11993: # FIXME - not supporting calls for a specific user
11994: return &allowed($qualifier,$rest);
11995: # ------------------------------------------ user.preferences, user.environment
11996: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
11997: if (($uname eq $env{'user.name'}) &&
11998: ($udom eq $env{'user.domain'})) {
11999: return $env{join('.',('environment',$qualifierrest))};
12000: } else {
12001: my %returnhash;
12002: if (!$publicuser) {
12003: %returnhash=&userenvironment($udom,$uname,
12004: $qualifierrest);
12005: }
12006: return $returnhash{$qualifierrest};
12007: }
12008: # ----------------------------------------------------------------- user.course
12009: } elsif ($space eq 'course') {
12010: # FIXME - not supporting calls for a specific user
12011: return $env{join('.',('request.course',$qualifier))};
12012: # ------------------------------------------------------------------- user.role
12013: } elsif ($space eq 'role') {
12014: # FIXME - not supporting calls for a specific user
12015: my ($role,$where)=split(/\./,$env{'request.role'});
12016: if ($qualifier eq 'value') {
12017: return $role;
12018: } elsif ($qualifier eq 'extent') {
12019: return $where;
12020: }
12021: # ----------------------------------------------------------------- user.domain
12022: } elsif ($space eq 'domain') {
12023: return $udom;
12024: # ------------------------------------------------------------------- user.name
12025: } elsif ($space eq 'name') {
12026: return $uname;
12027: # ---------------------------------------------------- Any other user namespace
12028: } else {
12029: my %reply;
12030: if (!$publicuser) {
12031: %reply=&get($space,[$qualifierrest],$udom,$uname);
12032: }
12033: return $reply{$qualifierrest};
12034: }
12035: } elsif ($realm eq 'query') {
12036: # ---------------------------------------------- pull stuff out of query string
12037: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
12038: [$spacequalifierrest]);
12039: return $env{'form.'.$spacequalifierrest};
12040: } elsif ($realm eq 'request') {
12041: # ------------------------------------------------------------- request.browser
12042: if ($space eq 'browser') {
12043: return $env{'browser.'.$qualifier};
12044: # ------------------------------------------------------------ request.filename
12045: } else {
12046: return $env{'request.'.$spacequalifierrest};
12047: }
12048: } elsif ($realm eq 'course') {
12049: # ---------------------------------------------------------- course.description
12050: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
12051: } elsif ($realm eq 'resource') {
12052:
12053: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
12054: if (!$symbparm) { $symbparm=&symbread(); }
12055: }
12056:
12057: if ($qualifier eq '') {
12058: if ($space eq 'title') {
12059: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
12060: return &gettitle($symbparm);
12061: }
12062:
12063: if ($space eq 'map') {
12064: my ($map) = &decode_symb($symbparm);
12065: return &symbread($map);
12066: }
12067: if ($space eq 'maptitle') {
12068: my ($map) = &decode_symb($symbparm);
12069: return &gettitle($map);
12070: }
12071: if ($space eq 'filename') {
12072: if ($symbparm) {
12073: return &clutter((&decode_symb($symbparm))[2]);
12074: }
12075: return &hreflocation('',$env{'request.filename'});
12076: }
12077:
12078: if ((defined($courseid)) && ($courseid eq $env{'request.course.id'}) && $symbparm) {
12079: if ($space eq 'visibleparts') {
12080: my $navmap = Apache::lonnavmaps::navmap->new();
12081: my $item;
12082: if (ref($navmap)) {
12083: my $res = $navmap->getBySymb($symbparm);
12084: my $parts = $res->parts();
12085: if (ref($parts) eq 'ARRAY') {
12086: $item = join(',',@{$parts});
12087: }
12088: undef($navmap);
12089: }
12090: return $item;
12091: }
12092: }
12093: }
12094:
12095: my ($section, $group, @groups, @recurseup, $recursed);
12096: my ($courselevelm,$courseleveli,$courselevel,$mapp);
12097: if (($courseid eq '') && ($cid)) {
12098: $courseid = $cid;
12099: }
12100: if (($symbparm && $courseid) &&
12101: (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid))) {
12102:
12103: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
12104:
12105: # ----------------------------------------------------- Cascading lookup scheme
12106: my $symbp=$symbparm;
12107: $mapp=&deversion((&decode_symb($symbp))[0]);
12108: my $symbparm=$symbp.'.'.$spacequalifierrest;
12109: my $recurseparm=$mapp.'___(rec).'.$spacequalifierrest;
12110: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
12111: if (($env{'user.name'} eq $uname) &&
12112: ($env{'user.domain'} eq $udom)) {
12113: $section=$env{'request.course.sec'};
12114: @groups = split(/:/,$env{'request.course.groups'});
12115: @groups=&sort_course_groups($courseid,@groups);
12116: } else {
12117: if (! defined($usection)) {
12118: $section=&getsection($udom,$uname,$courseid);
12119: } else {
12120: $section = $usection;
12121: }
12122: @groups = &get_users_groups($udom,$uname,$courseid);
12123: }
12124:
12125: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
12126: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
12127: my $secleveli=$courseid.'.['.$section.'].'.$recurseparm;
12128: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
12129:
12130: $courselevel=$courseid.'.'.$spacequalifierrest;
12131: my $courselevelr=$courseid.'.'.$symbparm;
12132: $courseleveli=$courseid.'.'.$recurseparm;
12133: $courselevelm=$courseid.'.'.$mapparm;
12134:
12135: # ----------------------------------------------------------- first, check user
12136:
12137: my $userreply=&resdata($uname,$udom,'user',$mapp,\$recursed,
12138: \@recurseup,$courseid,'.',$spacequalifierrest,
12139: ([$courselevelr,'resource'],
12140: [$courselevelm,'map' ],
12141: [$courseleveli,'map' ],
12142: [$courselevel, 'course' ]));
12143: if (defined($userreply)) { return &get_reply($userreply); }
12144:
12145: # ------------------------------------------------ second, check some of course
12146: my $coursereply;
12147: if (@groups > 0) {
12148: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
12149: $recurseparm,$mapparm,$spacequalifierrest,
12150: $mapp,\$recursed,\@recurseup);
12151: if (defined($coursereply)) { return &get_reply($coursereply); }
12152: }
12153:
12154: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
12155: $env{'course.'.$courseid.'.domain'},
12156: 'course',$mapp,\$recursed,\@recurseup,
12157: $courseid,'.['.$section.'].',$spacequalifierrest,
12158: ([$seclevelr, 'resource'],
12159: [$seclevelm, 'map' ],
12160: [$secleveli, 'map' ],
12161: [$seclevel, 'course' ],
12162: [$courselevelr,'resource']));
12163: if (defined($coursereply)) { return &get_reply($coursereply); }
12164:
12165: # ------------------------------------------------------ third, check map parms
12166: my %parmhash=();
12167: my $thisparm='';
12168: if (tie(%parmhash,'GDBM_File',
12169: $env{'request.course.fn'}.'_parms.db',
12170: &GDBM_READER(),0640)) {
12171: $thisparm=$parmhash{$symbparm};
12172: untie(%parmhash);
12173: }
12174: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
12175: }
12176: # ------------------------------------------ fourth, look in resource metadata
12177:
12178: my $what = $spacequalifierrest;
12179: $what=~s/\./\_/;
12180: my $filename;
12181: if (!$symbparm) { $symbparm=&symbread(); }
12182: if ($symbparm) {
12183: $filename=(&decode_symb($symbparm))[2];
12184: } else {
12185: $filename=$env{'request.filename'};
12186: }
12187: my $toolsymb;
12188: if (($filename =~ /ext\.tool$/) && ($what ne '0_gradable')) {
12189: $toolsymb = $symbparm;
12190: }
12191: my $metadata=&metadata($filename,$what,$toolsymb);
12192: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
12193: $metadata=&metadata($filename,'parameter_'.$what,$toolsymb);
12194: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
12195:
12196: # ----------------------------------------------- fifth, look in rest of course
12197: if ($symbparm && defined($courseid) &&
12198: $courseid eq $env{'request.course.id'}) {
12199: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
12200: $env{'course.'.$courseid.'.domain'},
12201: 'course',$mapp,\$recursed,\@recurseup,
12202: $courseid,'.',$spacequalifierrest,
12203: ([$courselevelm,'map' ],
12204: [$courseleveli,'map' ],
12205: [$courselevel, 'course']));
12206: if (defined($coursereply)) { return &get_reply($coursereply); }
12207: }
12208: # ------------------------------------------------------------------ Cascade up
12209: unless ($space eq '0') {
12210: my @parts=split(/_/,$space);
12211: my $id=pop(@parts);
12212: my $part=join('_',@parts);
12213: if ($part eq '') { $part='0'; }
12214: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
12215: $symbparm,$udom,$uname,$section,1);
12216: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
12217: }
12218: if ($recurse) { return undef; }
12219: my $pack_def=&packages_tab_default($filename,$varname,$toolsymb);
12220: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
12221: # ---------------------------------------------------- Any other user namespace
12222: } elsif ($realm eq 'environment') {
12223: # ----------------------------------------------------------------- environment
12224: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
12225: return $env{'environment.'.$spacequalifierrest};
12226: } else {
12227: if ($uname eq 'anonymous' && $udom eq '') {
12228: return '';
12229: }
12230: my %returnhash=&userenvironment($udom,$uname,
12231: $spacequalifierrest);
12232: return $returnhash{$spacequalifierrest};
12233: }
12234: } elsif ($realm eq 'system') {
12235: # ----------------------------------------------------------------- system.time
12236: if ($space eq 'time') {
12237: return time;
12238: }
12239: } elsif ($realm eq 'server') {
12240: # ----------------------------------------------------------------- system.time
12241: if ($space eq 'name') {
12242: return $ENV{'SERVER_NAME'};
12243: }
12244: }
12245: return '';
12246: }
12247:
12248: sub get_reply {
12249: my ($reply_value) = @_;
12250: if (ref($reply_value) eq 'ARRAY') {
12251: if (wantarray) {
12252: return @$reply_value;
12253: }
12254: return $reply_value->[0];
12255: } else {
12256: return $reply_value;
12257: }
12258: }
12259:
12260: sub check_group_parms {
12261: my ($courseid,$groups,$symbparm,$recurseparm,$mapparm,$what,$mapp,
12262: $recursed,$recurseupref) = @_;
12263: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$recurseparm,'map'],
12264: [$what,'course']);
12265: my $coursereply;
12266: foreach my $group (@{$groups}) {
12267: my @groupitems = ();
12268: foreach my $level (@levels) {
12269: my $item = $courseid.'.['.$group.'].'.$level->[0];
12270: push(@groupitems,[$item,$level->[1]]);
12271: }
12272: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
12273: $env{'course.'.$courseid.'.domain'},
12274: 'course',$mapp,$recursed,$recurseupref,
12275: $courseid,'.['.$group.'].',$what,
12276: @groupitems);
12277: last if (defined($coursereply));
12278: }
12279: return $coursereply;
12280: }
12281:
12282: sub get_map_hierarchy {
12283: my ($mapname,$courseid) = @_;
12284: my @recurseup = ();
12285: if ($mapname) {
12286: if (($cachedmapkey eq $courseid) &&
12287: (abs($cachedmaptime-time)<5)) {
12288: if (ref($cachedmaps{$mapname}) eq 'ARRAY') {
12289: return @{$cachedmaps{$mapname}};
12290: }
12291: }
12292: my $navmap = Apache::lonnavmaps::navmap->new();
12293: if (ref($navmap)) {
12294: @recurseup = $navmap->recurseup_maps($mapname);
12295: undef($navmap);
12296: $cachedmaps{$mapname} = \@recurseup;
12297: $cachedmaptime=time;
12298: $cachedmapkey=$courseid;
12299: }
12300: }
12301: return @recurseup;
12302: }
12303:
12304: }
12305:
12306: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
12307: my ($courseid,@groups) = @_;
12308: @groups = sort(@groups);
12309: return @groups;
12310: }
12311:
12312: sub packages_tab_default {
12313: my ($uri,$varname,$toolsymb)=@_;
12314: my (undef,$part,$name)=split(/\./,$varname);
12315:
12316: my (@extension,@specifics,$do_default);
12317: foreach my $package (split(/,/,&metadata($uri,'packages',$toolsymb))) {
12318: my ($pack_type,$pack_part)=split(/_/,$package,2);
12319: if ($pack_type eq 'default') {
12320: $do_default=1;
12321: } elsif ($pack_type eq 'extension') {
12322: push(@extension,[$package,$pack_type,$pack_part]);
12323: } elsif ($pack_part eq $part || $pack_type eq 'part') {
12324: # only look at packages defaults for packages that this id is
12325: push(@specifics,[$package,$pack_type,$pack_part]);
12326: }
12327: }
12328: # first look for a package that matches the requested part id
12329: foreach my $package (@specifics) {
12330: my (undef,$pack_type,$pack_part)=@{$package};
12331: next if ($pack_part ne $part);
12332: if (defined($packagetab{"$pack_type&$name&default"})) {
12333: return $packagetab{"$pack_type&$name&default"};
12334: }
12335: }
12336: # look for any possible matching non extension_ package
12337: foreach my $package (@specifics) {
12338: my (undef,$pack_type,$pack_part)=@{$package};
12339: if (defined($packagetab{"$pack_type&$name&default"})) {
12340: return $packagetab{"$pack_type&$name&default"};
12341: }
12342: if ($pack_type eq 'part') { $pack_part='0'; }
12343: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
12344: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
12345: }
12346: }
12347: # look for any posible extension_ match
12348: foreach my $package (@extension) {
12349: my ($package,$pack_type)=@{$package};
12350: if (defined($packagetab{"$pack_type&$name&default"})) {
12351: return $packagetab{"$pack_type&$name&default"};
12352: }
12353: if (defined($packagetab{$package."&$name&default"})) {
12354: return $packagetab{$package."&$name&default"};
12355: }
12356: }
12357: # look for a global default setting
12358: if ($do_default && defined($packagetab{"default&$name&default"})) {
12359: return $packagetab{"default&$name&default"};
12360: }
12361: return undef;
12362: }
12363:
12364: sub add_prefix_and_part {
12365: my ($prefix,$part)=@_;
12366: my $keyroot;
12367: if (defined($prefix) && $prefix !~ /^__/) {
12368: # prefix that has a part already
12369: $keyroot=$prefix;
12370: } elsif (defined($prefix)) {
12371: # prefix that is missing a part
12372: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
12373: } else {
12374: # no prefix at all
12375: if (defined($part)) { $keyroot='_'.$part; }
12376: }
12377: return $keyroot;
12378: }
12379:
12380: # ---------------------------------------------------------------- Get metadata
12381:
12382: my %metaentry;
12383: my %importedpartids;
12384: my %importedrespids;
12385: sub metadata {
12386: my ($uri,$what,$toolsymb,$liburi,$prefix,$depthcount)=@_;
12387: $uri=&declutter($uri);
12388: # if it is a non metadata possible uri return quickly
12389: if (($uri eq '') ||
12390: (($uri =~ m|^/*adm/|) &&
12391: ($uri !~ m|^adm/includes|) && ($uri !~ m{/(smppg|bulletinboard|ext\.tool)$})) ||
12392: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
12393: return undef;
12394: }
12395: if (($uri =~ /^priv/ || $uri=~m{^home/httpd/html/priv})
12396: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
12397: return undef;
12398: }
12399: my $filename=$uri;
12400: $uri=~s/\.meta$//;
12401: #
12402: # Is the metadata already cached?
12403: # Look at timestamp of caching
12404: # Everything is cached by the main uri, libraries are never directly cached
12405: #
12406: if (!defined($liburi)) {
12407: my ($result,$cached)=&is_cached_new('meta',$uri);
12408: if (defined($cached)) { return $result->{':'.$what}; }
12409: }
12410:
12411: #
12412: # If the uri is for an external tool the file from
12413: # which metadata should be retrieved depends on whether
12414: # the tool had been configured to be gradable (set in the Course
12415: # Editor or Resource Editor).
12416: #
12417: # If a valid symb has been included as the third arg in the call
12418: # to &metadata() that can be used to retrieve the value of
12419: # parameter_0_gradable set for the resource, and included in the
12420: # uploaded map containing the tool. The value is retrieved via
12421: # &EXT(), if a valid symb is available. Otherwise the value of
12422: # gradable in the exttool_$marker.db file for the tool instance
12423: # is retrieved via &get().
12424: #
12425: # When lonuserstate::traceroute() calls lonnet::EXT() for
12426: # hiddenresource and encrypturl (during course initialization)
12427: # the map-level parameter for resource.0.gradable included in the
12428: # uploaded map containing the tool will not yet have been stored
12429: # in the user_course_parms.db file for the user's session, so in
12430: # this case fall back to retrieving gradable status from the
12431: # exttool_$marker.db file.
12432: #
12433: # In order to avoid an infinite loop, &metadata() will return
12434: # before a call to &EXT(), if the uri is for an external tool
12435: # and the $what for which metadata is being requested is
12436: # parameter_0_gradable or 0_gradable.
12437: #
12438:
12439: if ($uri =~ /ext\.tool$/) {
12440: if (($what eq 'parameter_0_gradable') || ($what eq '0_gradable')) {
12441: return;
12442: } else {
12443: my ($checked,$use_passback);
12444: if ($toolsymb ne '') {
12445: (undef,undef,my $tooluri) = &decode_symb($toolsymb);
12446: if (($tooluri eq $uri) && (&EXT('resource.0.gradable',$toolsymb))) {
12447: $checked = 1;
12448: if (&EXT('resource.0.gradable',$toolsymb) =~ /^yes$/i) {
12449: $use_passback = 1;
12450: }
12451: }
12452: }
12453: unless ($checked) {
12454: my ($ignore,$cdom,$cnum,$marker) = split(m{/},$uri);
12455: $marker=~s/\D//g;
12456: if ($marker) {
12457: my %toolsettings=&get('exttool_'.$marker,['gradable'],$cdom,$cnum);
12458: $use_passback = $toolsettings{'gradable'};
12459: }
12460: }
12461: if ($use_passback) {
12462: $filename = '/home/httpd/html/res/lib/templates/LTIpassback.tool';
12463: } else {
12464: $filename = '/home/httpd/html/res/lib/templates/LTIstandard.tool';
12465: }
12466: }
12467: }
12468:
12469: {
12470: # Imported parts would go here
12471: my @origfiletagids=();
12472: my $importedparts=0;
12473:
12474: # Imported responseids would go here
12475: my $importedresponses=0;
12476: #
12477: # Is this a recursive call for a library?
12478: #
12479: # if (! exists($metacache{$uri})) {
12480: # $metacache{$uri}={};
12481: # }
12482: my $cachetime = 60*60;
12483: if ($liburi) {
12484: $liburi=&declutter($liburi);
12485: $filename=$liburi;
12486: } else {
12487: &devalidate_cache_new('meta',$uri);
12488: undef(%metaentry);
12489: }
12490: my %metathesekeys=();
12491: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
12492: my $metastring;
12493: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
12494: my $which = &hreflocation('','/'.($liburi || $uri));
12495: $metastring =
12496: &Apache::lonnet::ssi_body($which,
12497: ('grade_target' => 'meta'));
12498: $cachetime = 1; # only want this cached in the child not long term
12499: } elsif (($uri !~ m -^(editupload)/-) &&
12500: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
12501: my $file=&filelocation('',&clutter($filename));
12502: #push(@{$metaentry{$uri.'.file'}},$file);
12503: $metastring=&getfile($file);
12504: }
12505: my $parser=HTML::LCParser->new(\$metastring);
12506: my $token;
12507: undef %metathesekeys;
12508: while ($token=$parser->get_token) {
12509: if ($token->[0] eq 'S') {
12510: if (defined($token->[2]->{'package'})) {
12511: #
12512: # This is a package - get package info
12513: #
12514: my $package=$token->[2]->{'package'};
12515: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
12516: if (defined($token->[2]->{'id'})) {
12517: $keyroot.='_'.$token->[2]->{'id'};
12518: }
12519: if ($metaentry{':packages'}) {
12520: $metaentry{':packages'}.=','.$package.$keyroot;
12521: } else {
12522: $metaentry{':packages'}=$package.$keyroot;
12523: }
12524: foreach my $pack_entry (keys(%packagetab)) {
12525: my $part=$keyroot;
12526: $part=~s/^\_//;
12527: if ($pack_entry=~/^\Q$package\E\&/ ||
12528: $pack_entry=~/^\Q$package\E_0\&/) {
12529: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
12530: # ignore package.tab specified default values
12531: # here &package_tab_default() will fetch those
12532: if ($subp eq 'default') { next; }
12533: my $value=$packagetab{$pack_entry};
12534: my $unikey;
12535: if ($pack =~ /_0$/) {
12536: $unikey='parameter_0_'.$name;
12537: $part=0;
12538: } else {
12539: $unikey='parameter'.$keyroot.'_'.$name;
12540: }
12541: if ($subp eq 'display') {
12542: $value.=' [Part: '.$part.']';
12543: }
12544: $metaentry{':'.$unikey.'.part'}=$part;
12545: $metathesekeys{$unikey}=1;
12546: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
12547: $metaentry{':'.$unikey.'.'.$subp}=$value;
12548: }
12549: if (defined($metaentry{':'.$unikey.'.default'})) {
12550: $metaentry{':'.$unikey}=
12551: $metaentry{':'.$unikey.'.default'};
12552: }
12553: }
12554: }
12555: } else {
12556: #
12557: # This is not a package - some other kind of start tag
12558: #
12559: my $entry=$token->[1];
12560: my $unikey='';
12561:
12562: if ($entry eq 'import') {
12563: #
12564: # Importing a library here
12565: #
12566: my $location=$parser->get_text('/import');
12567: my $dir=$filename;
12568: $dir=~s|[^/]*$||;
12569: $location=&filelocation($dir,$location);
12570:
12571: my $importid=$token->[2]->{'id'};
12572: my $importmode=$token->[2]->{'importmode'};
12573: #
12574: # Check metadata for imported file to
12575: # see if it contained response items
12576: #
12577: my ($origfile,@libfilekeys);
12578: my %currmetaentry = %metaentry;
12579: @libfilekeys = split(/,/,&metadata($location,'keys',undef,undef,undef,
12580: $depthcount+1));
12581: if (grep(/^responseorder$/,@libfilekeys)) {
12582: my $libresponseorder = &metadata($location,'responseorder',undef,undef,
12583: undef,$depthcount+1);
12584: if ($libresponseorder ne '') {
12585: if ($#origfiletagids<0) {
12586: undef(%importedrespids);
12587: undef(%importedpartids);
12588: }
12589: my @respids = split(/\s*,\s*/,$libresponseorder);
12590: if (@respids) {
12591: $importedrespids{$importid} = join(',',map { $importid.'_'.$_ } @respids);
12592: }
12593: if ($importedrespids{$importid} ne '') {
12594: $importedresponses = 1;
12595: # We need to get the original file and the imported file to get the response order correct
12596: # Load and inspect original file
12597: if ($#origfiletagids<0) {
12598: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
12599: $origfile=&getfile($origfilelocation);
12600: @origfiletagids=($origfile=~/<((?:\w+)response|import|part)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12601: }
12602: }
12603: }
12604: }
12605: # Do not overwrite contents of %metaentry hash for resource itself with
12606: # hash populated for imported library file
12607: %metaentry = %currmetaentry;
12608: undef(%currmetaentry);
12609: if ($importmode eq 'part') {
12610: # Import as part(s)
12611: $importedparts=1;
12612: # We need to get the original file and the imported file to get the part order correct
12613: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
12614: # Load and inspect original file if we didn't do that already
12615: if ($#origfiletagids<0) {
12616: undef(%importedrespids);
12617: undef(%importedpartids);
12618: if ($origfile eq '') {
12619: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
12620: $origfile=&getfile($origfilelocation);
12621: @origfiletagids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12622: }
12623: }
12624: my @impfilepartids;
12625: # If <partorder> tag is included in metadata for the imported file
12626: # get the parts in the imported file from that.
12627: if (grep(/^partorder$/,@libfilekeys)) {
12628: %currmetaentry = %metaentry;
12629: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
12630: $depthcount+1);
12631: %metaentry = %currmetaentry;
12632: undef(%currmetaentry);
12633: if ($libpartorder ne '') {
12634: @impfilepartids=split(/\s*,\s*/,$libpartorder);
12635: }
12636: } else {
12637: # If no <partorder> tag available, load and inspect imported file
12638: my $impfile=&getfile($location);
12639: @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12640: }
12641: if ($#impfilepartids>=0) {
12642: # This problem had parts
12643: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
12644: } else {
12645: # Importing by turning a single problem into a problem part
12646: # It gets the import-tags ID as part-ID
12647: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
12648: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
12649: }
12650: } else {
12651: # Import as problem or as normal import
12652: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
12653: unless ($importmode eq 'problem') {
12654: # Normal import
12655: if (defined($token->[2]->{'id'})) {
12656: $unikey.='_'.$token->[2]->{'id'};
12657: }
12658: }
12659: # Check metadata for imported file to
12660: # see if it contained parts
12661: if (grep(/^partorder$/,@libfilekeys)) {
12662: %currmetaentry = %metaentry;
12663: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
12664: $depthcount+1);
12665: %metaentry = %currmetaentry;
12666: undef(%currmetaentry);
12667: if ($libpartorder ne '') {
12668: $importedparts = 1;
12669: $importedpartids{$token->[2]->{'id'}}=$libpartorder;
12670: }
12671: }
12672: }
12673: if ($depthcount<20) {
12674: my $metadata =
12675: &metadata($uri,'keys',$toolsymb,$location,$unikey,
12676: $depthcount+1);
12677: foreach my $meta (split(',',$metadata)) {
12678: $metaentry{':'.$meta}=$metaentry{':'.$meta};
12679: $metathesekeys{$meta}=1;
12680: }
12681: }
12682: } else {
12683: #
12684: # Not importing, some other kind of non-package, non-library start tag
12685: #
12686: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
12687: if (defined($token->[2]->{'id'})) {
12688: $unikey.='_'.$token->[2]->{'id'};
12689: }
12690: if (defined($token->[2]->{'name'})) {
12691: $unikey.='_'.$token->[2]->{'name'};
12692: }
12693: $metathesekeys{$unikey}=1;
12694: foreach my $param (@{$token->[3]}) {
12695: $metaentry{':'.$unikey.'.'.$param} =
12696: $token->[2]->{$param};
12697: }
12698: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
12699: my $default=$metaentry{':'.$unikey.'.default'};
12700: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
12701: # only ws inside the tag, and not in default, so use default
12702: # as value
12703: $metaentry{':'.$unikey}=$default;
12704: } elsif ( $internaltext =~ /\S/ ) {
12705: # something interesting inside the tag
12706: $metaentry{':'.$unikey}=$internaltext;
12707: } else {
12708: # no interesting values, don't set a default
12709: }
12710: # end of not-a-package not-a-library import
12711: }
12712: # end of not-a-package start tag
12713: }
12714: # the next is the end of "start tag"
12715: }
12716: }
12717: my ($extension) = ($uri =~ /\.(\w+)$/);
12718: $extension = lc($extension);
12719: if ($extension eq 'htm') { $extension='html'; }
12720:
12721: foreach my $key (keys(%packagetab)) {
12722: #no specific packages #how's our extension
12723: if ($key!~/^extension_\Q$extension\E&/) { next; }
12724: &metadata_create_package_def($uri,$key,'extension_'.$extension,
12725: \%metathesekeys);
12726: }
12727:
12728: if (!exists($metaentry{':packages'})
12729: || $packagetab{"import_defaults&extension_$extension"}) {
12730: foreach my $key (keys(%packagetab)) {
12731: #no specific packages well let's get default then
12732: if ($key!~/^default&/) { next; }
12733: &metadata_create_package_def($uri,$key,'default',
12734: \%metathesekeys);
12735: }
12736: }
12737: # are there custom rights to evaluate
12738: if ($metaentry{':copyright'} eq 'custom') {
12739:
12740: #
12741: # Importing a rights file here
12742: #
12743: unless ($depthcount) {
12744: my $location=$metaentry{':customdistributionfile'};
12745: my $dir=$filename;
12746: $dir=~s|[^/]*$||;
12747: $location=&filelocation($dir,$location);
12748: my $rights_metadata =
12749: &metadata($uri,'keys',$toolsymb,$location,'_rights',
12750: $depthcount+1);
12751: foreach my $rights (split(',',$rights_metadata)) {
12752: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
12753: $metathesekeys{$rights}=1;
12754: }
12755: }
12756: }
12757: # uniqifiy package listing
12758: my %seen;
12759: my @uniq_packages =
12760: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
12761: $metaentry{':packages'} = join(',',@uniq_packages);
12762:
12763: if (($importedresponses) || ($importedparts)) {
12764: if ($importedparts) {
12765: # We had imported parts and need to rebuild partorder
12766: $metaentry{':partorder'}='';
12767: $metathesekeys{'partorder'}=1;
12768: }
12769: if ($importedresponses) {
12770: # We had imported responses and need to rebuil responseorder
12771: $metaentry{':responseorder'}='';
12772: $metathesekeys{'responseorder'}=1;
12773: }
12774: for (my $index=0;$index<$#origfiletagids;$index+=2) {
12775: my $origid = $origfiletagids[$index+1];
12776: if ($origfiletagids[$index] eq 'part') {
12777: # Original part, part of the problem
12778: if ($importedparts) {
12779: $metaentry{':partorder'}.=','.$origid;
12780: }
12781: } elsif ($origfiletagids[$index] eq 'import') {
12782: if ($importedparts) {
12783: # We have imported parts at this position
12784: if ($importedpartids{$origid} ne '') {
12785: $metaentry{':partorder'}.=','.$importedpartids{$origid};
12786: }
12787: }
12788: if ($importedresponses) {
12789: # We have imported responses at this position
12790: if ($importedrespids{$origid} ne '') {
12791: $metaentry{':responseorder'}.=','.$importedrespids{$origid};
12792: }
12793: }
12794: } else {
12795: # Original response item, part of the problem
12796: if ($importedresponses) {
12797: $metaentry{':responseorder'}.=','.$origid;
12798: }
12799: }
12800: }
12801: if ($importedparts) {
12802: $metaentry{':partorder'}=~s/^\,//;
12803: }
12804: if ($importedresponses) {
12805: $metaentry{':responseorder'}=~s/^\,//;
12806: }
12807: }
12808: $metaentry{':keys'} = join(',',keys(%metathesekeys));
12809: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
12810: $metaentry{':allpossiblekeys'}=join(',',keys(%metathesekeys));
12811: unless ($liburi) {
12812: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
12813: }
12814: # this is the end of "was not already recently cached
12815: }
12816: return $metaentry{':'.$what};
12817: }
12818:
12819: sub metadata_create_package_def {
12820: my ($uri,$key,$package,$metathesekeys)=@_;
12821: my ($pack,$name,$subp)=split(/\&/,$key);
12822: if ($subp eq 'default') { next; }
12823:
12824: if (defined($metaentry{':packages'})) {
12825: $metaentry{':packages'}.=','.$package;
12826: } else {
12827: $metaentry{':packages'}=$package;
12828: }
12829: my $value=$packagetab{$key};
12830: my $unikey;
12831: $unikey='parameter_0_'.$name;
12832: $metaentry{':'.$unikey.'.part'}=0;
12833: $$metathesekeys{$unikey}=1;
12834: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
12835: $metaentry{':'.$unikey.'.'.$subp}=$value;
12836: }
12837: if (defined($metaentry{':'.$unikey.'.default'})) {
12838: $metaentry{':'.$unikey}=
12839: $metaentry{':'.$unikey.'.default'};
12840: }
12841: }
12842:
12843: sub metadata_generate_part0 {
12844: my ($metadata,$metacache,$uri) = @_;
12845: my %allnames;
12846: foreach my $metakey (keys(%$metadata)) {
12847: if ($metakey=~/^parameter\_(.*)/) {
12848: my $part=$$metacache{':'.$metakey.'.part'};
12849: my $name=$$metacache{':'.$metakey.'.name'};
12850: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
12851: $allnames{$name}=$part;
12852: }
12853: }
12854: }
12855: foreach my $name (keys(%allnames)) {
12856: $$metadata{"parameter_0_$name"}=1;
12857: my $key=":parameter_0_$name";
12858: $$metacache{"$key.part"}='0';
12859: $$metacache{"$key.name"}=$name;
12860: $$metacache{"$key.type"}=$$metacache{':parameter_'.
12861: $allnames{$name}.'_'.$name.
12862: '.type'};
12863: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
12864: '.display'};
12865: my $expr='[Part: '.$allnames{$name}.']';
12866: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
12867: $$metacache{"$key.display"}=$olddis;
12868: }
12869: }
12870:
12871: # ------------------------------------------------------ Devalidate title cache
12872:
12873: sub devalidate_title_cache {
12874: my ($url)=@_;
12875: if (!$env{'request.course.id'}) { return; }
12876: my $symb=&symbread($url);
12877: if (!$symb) { return; }
12878: my $key=$env{'request.course.id'}."\0".$symb;
12879: &devalidate_cache_new('title',$key);
12880: }
12881:
12882: # ------------------------------------------------- Get the title of a course
12883:
12884: sub current_course_title {
12885: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
12886: }
12887: # ------------------------------------------------- Get the title of a resource
12888:
12889: sub gettitle {
12890: my $urlsymb=shift;
12891: my $symb=&symbread($urlsymb);
12892: if ($symb) {
12893: my $key=$env{'request.course.id'}."\0".$symb;
12894: my ($result,$cached)=&is_cached_new('title',$key);
12895: if (defined($cached)) {
12896: return $result;
12897: }
12898: my ($map,$resid,$url)=&decode_symb($symb);
12899: my $title='';
12900: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
12901: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
12902: } else {
12903: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12904: &GDBM_READER(),0640)) {
12905: my $mapid=$bighash{'map_pc_'.&clutter($map)};
12906: $title=$bighash{'title_'.$mapid.'.'.$resid};
12907: untie(%bighash);
12908: }
12909: }
12910: $title=~s/\&colon\;/\:/gs;
12911: if ($title) {
12912: # Remember both $symb and $title for dynamic metadata
12913: $accesshash{$symb.'___crstitle'}=$title;
12914: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
12915: # Cache this title and then return it
12916: return &do_cache_new('title',$key,$title,600);
12917: }
12918: $urlsymb=$url;
12919: }
12920: my $title=&metadata($urlsymb,'title');
12921: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
12922: return $title;
12923: }
12924:
12925: sub get_slot {
12926: my ($which,$cnum,$cdom)=@_;
12927: if (!$cnum || !$cdom) {
12928: (undef,my $courseid)=&whichuser();
12929: $cdom=$env{'course.'.$courseid.'.domain'};
12930: $cnum=$env{'course.'.$courseid.'.num'};
12931: }
12932: my $key=join("\0",'slots',$cdom,$cnum,$which);
12933: my %slotinfo;
12934: if (exists($remembered{$key})) {
12935: $slotinfo{$which} = $remembered{$key};
12936: } else {
12937: %slotinfo=&get('slots',[$which],$cdom,$cnum);
12938: &Apache::lonhomework::showhash(%slotinfo);
12939: my ($tmp)=keys(%slotinfo);
12940: if ($tmp=~/^error:/) { return (); }
12941: $remembered{$key} = $slotinfo{$which};
12942: }
12943: if (ref($slotinfo{$which}) eq 'HASH') {
12944: return %{$slotinfo{$which}};
12945: }
12946: return $slotinfo{$which};
12947: }
12948:
12949: sub get_reservable_slots {
12950: my ($cnum,$cdom,$uname,$udom) = @_;
12951: my $now = time;
12952: my $reservable_info;
12953: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
12954: if (exists($remembered{$key})) {
12955: $reservable_info = $remembered{$key};
12956: } else {
12957: my %resv;
12958: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
12959: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
12960: $reservable_info = \%resv;
12961: $remembered{$key} = $reservable_info;
12962: }
12963: return $reservable_info;
12964: }
12965:
12966: sub get_course_slots {
12967: my ($cnum,$cdom) = @_;
12968: my $hashid=$cnum.':'.$cdom;
12969: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
12970: if (defined($cached)) {
12971: if (ref($result) eq 'HASH') {
12972: return %{$result};
12973: }
12974: } else {
12975: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
12976: my ($tmp) = keys(%slots);
12977: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
12978: &do_cache_new('allslots',$hashid,\%slots,600);
12979: return %slots;
12980: }
12981: }
12982: return;
12983: }
12984:
12985: sub devalidate_slots_cache {
12986: my ($cnum,$cdom)=@_;
12987: my $hashid=$cnum.':'.$cdom;
12988: &devalidate_cache_new('allslots',$hashid);
12989: }
12990:
12991: sub get_coursechange {
12992: my ($cdom,$cnum) = @_;
12993: if ($cdom eq '' || $cnum eq '') {
12994: return unless ($env{'request.course.id'});
12995: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
12996: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
12997: }
12998: my $hashid=$cdom.'_'.$cnum;
12999: my ($change,$cached)=&is_cached_new('crschange',$hashid);
13000: if ((defined($cached)) && ($change ne '')) {
13001: return $change;
13002: } else {
13003: my %crshash;
13004: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
13005: if ($crshash{'internal.contentchange'} eq '') {
13006: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
13007: if ($change eq '') {
13008: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
13009: $change = $crshash{'internal.created'};
13010: }
13011: } else {
13012: $change = $crshash{'internal.contentchange'};
13013: }
13014: my $cachetime = 600;
13015: &do_cache_new('crschange',$hashid,$change,$cachetime);
13016: }
13017: return $change;
13018: }
13019:
13020: sub devalidate_coursechange_cache {
13021: my ($cnum,$cdom)=@_;
13022: my $hashid=$cnum.':'.$cdom;
13023: &devalidate_cache_new('crschange',$hashid);
13024: }
13025:
13026: # ------------------------------------------------- Update symbolic store links
13027:
13028: sub symblist {
13029: my ($mapname,%newhash)=@_;
13030: $mapname=&deversion(&declutter($mapname));
13031: my %hash;
13032: if (($env{'request.course.fn'}) && (%newhash)) {
13033: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
13034: &GDBM_WRCREAT(),0640)) {
13035: foreach my $url (keys(%newhash)) {
13036: next if ($url eq 'last_known'
13037: && $env{'form.no_update_last_known'});
13038: $hash{declutter($url)}=&encode_symb($mapname,
13039: $newhash{$url}->[1],
13040: $newhash{$url}->[0]);
13041: }
13042: if (untie(%hash)) {
13043: return 'ok';
13044: }
13045: }
13046: }
13047: return 'error';
13048: }
13049:
13050: # --------------------------------------------------------------- Verify a symb
13051:
13052: sub symbverify {
13053: my ($symb,$thisurl,$encstate)=@_;
13054: my $thisfn=$thisurl;
13055: $thisfn=&declutter($thisfn);
13056: # direct jump to resource in page or to a sequence - will construct own symbs
13057: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
13058: # check URL part
13059: my ($map,$resid,$url)=&decode_symb($symb);
13060:
13061: unless ($url eq $thisfn) { return 0; }
13062:
13063: $symb=&symbclean($symb);
13064: $thisurl=&deversion($thisurl);
13065: $thisfn=&deversion($thisfn);
13066:
13067: my %bighash;
13068: my $okay=0;
13069:
13070: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
13071: &GDBM_READER(),0640)) {
13072: my $noclutter;
13073: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
13074: $thisurl =~ s/\?.+$//;
13075: if ($map =~ m{^uploaded/.+\.page$}) {
13076: $thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
13077: $thisurl =~ s{^\Qhttp://https://\E}{https://};
13078: $noclutter = 1;
13079: }
13080: }
13081: my $ids;
13082: if ($noclutter) {
13083: $ids=$bighash{'ids_'.$thisurl};
13084: } else {
13085: $ids=$bighash{'ids_'.&clutter($thisurl)};
13086: }
13087: unless ($ids) {
13088: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
13089: $ids=$bighash{$idkey};
13090: }
13091: if ($ids) {
13092: # ------------------------------------------------------------------- Has ID(s)
13093: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
13094: $symb =~ s/\?.+$//;
13095: }
13096: foreach my $id (split(/\,/,$ids)) {
13097: my ($mapid,$resid)=split(/\./,$id);
13098: if (
13099: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
13100: eq $symb) {
13101: if (ref($encstate)) {
13102: $$encstate = $bighash{'encrypted_'.$id};
13103: }
13104: if (($env{'request.role.adv'}) ||
13105: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
13106: ($thisurl eq '/adm/navmaps')) {
13107: $okay=1;
13108: last;
13109: }
13110: }
13111: }
13112: }
13113: untie(%bighash);
13114: }
13115: return $okay;
13116: }
13117:
13118: # --------------------------------------------------------------- Clean-up symb
13119:
13120: sub symbclean {
13121: my $symb=shift;
13122: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
13123: # remove version from map
13124: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
13125:
13126: # remove version from URL
13127: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
13128:
13129: # remove wrapper
13130:
13131: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
13132: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
13133: return $symb;
13134: }
13135:
13136: # ---------------------------------------------- Split symb to find map and url
13137:
13138: sub encode_symb {
13139: my ($map,$resid,$url)=@_;
13140: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
13141: }
13142:
13143: sub decode_symb {
13144: my $symb=shift;
13145: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
13146: my ($map,$resid,$url)=split(/___/,$symb);
13147: return (&fixversion($map),$resid,&fixversion($url));
13148: }
13149:
13150: sub fixversion {
13151: my $fn=shift;
13152: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
13153: my %bighash;
13154: my $uri=&clutter($fn);
13155: my $key=$env{'request.course.id'}.'_'.$uri;
13156: # is this cached?
13157: my ($result,$cached)=&is_cached_new('courseresversion',$key);
13158: if (defined($cached)) { return $result; }
13159: # unfortunately not cached, or expired
13160: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
13161: &GDBM_READER(),0640)) {
13162: if ($bighash{'version_'.$uri}) {
13163: my $version=$bighash{'version_'.$uri};
13164: unless (($version eq 'mostrecent') ||
13165: ($version==&getversion($uri))) {
13166: $uri=~s/\.(\w+)$/\.$version\.$1/;
13167: }
13168: }
13169: untie %bighash;
13170: }
13171: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
13172: }
13173:
13174: sub deversion {
13175: my $url=shift;
13176: $url=~s/\.\d+\.(\w+)$/\.$1/;
13177: return $url;
13178: }
13179:
13180: # ------------------------------------------------------ Return symb list entry
13181:
13182: sub symbread {
13183: my ($thisfn,$donotrecurse,$ignorecachednull,$checkforblock,$possibles)=@_;
13184: my $cache_str='request.symbread.cached.'.$thisfn;
13185: if (defined($env{$cache_str})) {
13186: if ($ignorecachednull) {
13187: return $env{$cache_str} unless ($env{$cache_str} eq '');
13188: } else {
13189: return $env{$cache_str};
13190: }
13191: }
13192: # no filename provided? try from environment
13193: unless ($thisfn) {
13194: if ($env{'request.symb'}) {
13195: return $env{$cache_str}=&symbclean($env{'request.symb'});
13196: }
13197: $thisfn=$env{'request.filename'};
13198: }
13199: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
13200: # is that filename actually a symb? Verify, clean, and return
13201: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
13202: if (&symbverify($thisfn,$1)) {
13203: return $env{$cache_str}=&symbclean($thisfn);
13204: }
13205: }
13206: $thisfn=declutter($thisfn);
13207: my %hash;
13208: my %bighash;
13209: my $syval='';
13210: if (($env{'request.course.fn'}) && ($thisfn)) {
13211: my $targetfn = $thisfn;
13212: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
13213: $targetfn = 'adm/wrapper/'.$thisfn;
13214: }
13215: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
13216: $targetfn=$1;
13217: }
13218: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
13219: &GDBM_READER(),0640)) {
13220: $syval=$hash{$targetfn};
13221: untie(%hash);
13222: }
13223: # ---------------------------------------------------------- There was an entry
13224: if ($syval) {
13225: #unless ($syval=~/\_\d+$/) {
13226: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
13227: #&appenv({'request.ambiguous' => $thisfn});
13228: #return $env{$cache_str}='';
13229: #}
13230: #$syval.=$1;
13231: #}
13232: } else {
13233: # ------------------------------------------------------- Was not in symb table
13234: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
13235: &GDBM_READER(),0640)) {
13236: # ---------------------------------------------- Get ID(s) for current resource
13237: my $ids=$bighash{'ids_'.&clutter($thisfn)};
13238: unless ($ids) {
13239: $ids=$bighash{'ids_/'.$thisfn};
13240: }
13241: unless ($ids) {
13242: # alias?
13243: $ids=$bighash{'mapalias_'.$thisfn};
13244: }
13245: if ($ids) {
13246: # ------------------------------------------------------------------- Has ID(s)
13247: my @possibilities=split(/\,/,$ids);
13248: if ($#possibilities==0) {
13249: # ----------------------------------------------- There is only one possibility
13250: my ($mapid,$resid)=split(/\./,$ids);
13251: $syval=&encode_symb($bighash{'map_id_'.$mapid},
13252: $resid,$thisfn);
13253: if (ref($possibles) eq 'HASH') {
13254: $possibles->{$syval} = 1;
13255: }
13256: if ($checkforblock) {
13257: my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids});
13258: if (@blockers) {
13259: $syval = '';
13260: return;
13261: }
13262: }
13263: } elsif ((!$donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
13264: # ------------------------------------------ There is more than one possibility
13265: my $realpossible=0;
13266: foreach my $id (@possibilities) {
13267: my $file=$bighash{'src_'.$id};
13268: my $canaccess;
13269: if (($donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
13270: $canaccess = 1;
13271: } else {
13272: $canaccess = &allowed('bre',$file);
13273: }
13274: if ($canaccess) {
13275: my ($mapid,$resid)=split(/\./,$id);
13276: if ($bighash{'map_type_'.$mapid} ne 'page') {
13277: my $poss_syval=&encode_symb($bighash{'map_id_'.$mapid},
13278: $resid,$thisfn);
13279: if (ref($possibles) eq 'HASH') {
13280: $possibles->{$syval} = 1;
13281: }
13282: if ($checkforblock) {
13283: my @blockers = &has_comm_blocking('bre',$poss_syval,$file);
13284: unless (@blockers > 0) {
13285: $syval = $poss_syval;
13286: $realpossible++;
13287: }
13288: } else {
13289: $syval = $poss_syval;
13290: $realpossible++;
13291: }
13292: }
13293: }
13294: }
13295: if ($realpossible!=1) { $syval=''; }
13296: } else {
13297: $syval='';
13298: }
13299: }
13300: untie(%bighash);
13301: }
13302: }
13303: if ($syval) {
13304: return $env{$cache_str}=$syval;
13305: }
13306: }
13307: &appenv({'request.ambiguous' => $thisfn});
13308: return $env{$cache_str}='';
13309: }
13310:
13311: # ---------------------------------------------------------- Return random seed
13312:
13313: sub numval {
13314: my $txt=shift;
13315: $txt=~tr/A-J/0-9/;
13316: $txt=~tr/a-j/0-9/;
13317: $txt=~tr/K-T/0-9/;
13318: $txt=~tr/k-t/0-9/;
13319: $txt=~tr/U-Z/0-5/;
13320: $txt=~tr/u-z/0-5/;
13321: $txt=~s/\D//g;
13322: if ($_64bit) { if ($txt > 2**32) { return -1; } }
13323: return int($txt);
13324: }
13325:
13326: sub numval2 {
13327: my $txt=shift;
13328: $txt=~tr/A-J/0-9/;
13329: $txt=~tr/a-j/0-9/;
13330: $txt=~tr/K-T/0-9/;
13331: $txt=~tr/k-t/0-9/;
13332: $txt=~tr/U-Z/0-5/;
13333: $txt=~tr/u-z/0-5/;
13334: $txt=~s/\D//g;
13335: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
13336: my $total;
13337: foreach my $val (@txts) { $total+=$val; }
13338: if ($_64bit) { if ($total > 2**32) { return -1; } }
13339: return int($total);
13340: }
13341:
13342: sub numval3 {
13343: use integer;
13344: my $txt=shift;
13345: $txt=~tr/A-J/0-9/;
13346: $txt=~tr/a-j/0-9/;
13347: $txt=~tr/K-T/0-9/;
13348: $txt=~tr/k-t/0-9/;
13349: $txt=~tr/U-Z/0-5/;
13350: $txt=~tr/u-z/0-5/;
13351: $txt=~s/\D//g;
13352: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
13353: my $total;
13354: foreach my $val (@txts) { $total+=$val; }
13355: if ($_64bit) { $total=(($total<<32)>>32); }
13356: return $total;
13357: }
13358:
13359: sub digest {
13360: my ($data)=@_;
13361: my $digest=&Digest::MD5::md5($data);
13362: my ($a,$b,$c,$d)=unpack("iiii",$digest);
13363: my ($e,$f);
13364: {
13365: use integer;
13366: $e=($a+$b);
13367: $f=($c+$d);
13368: if ($_64bit) {
13369: $e=(($e<<32)>>32);
13370: $f=(($f<<32)>>32);
13371: }
13372: }
13373: if (wantarray) {
13374: return ($e,$f);
13375: } else {
13376: my $g;
13377: {
13378: use integer;
13379: $g=($e+$f);
13380: if ($_64bit) {
13381: $g=(($g<<32)>>32);
13382: }
13383: }
13384: return $g;
13385: }
13386: }
13387:
13388: sub latest_rnd_algorithm_id {
13389: return '64bit5';
13390: }
13391:
13392: sub get_rand_alg {
13393: my ($courseid)=@_;
13394: if (!$courseid) { $courseid=(&whichuser())[1]; }
13395: if ($courseid) {
13396: return $env{"course.$courseid.rndseed"};
13397: }
13398: return &latest_rnd_algorithm_id();
13399: }
13400:
13401: sub validCODE {
13402: my ($CODE)=@_;
13403: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
13404: return 0;
13405: }
13406:
13407: sub getCODE {
13408: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
13409: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
13410: defined($Apache::lonhomework::parsing_a_task) ) &&
13411: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
13412: return $Apache::lonhomework::history{'resource.CODE'};
13413: }
13414: return undef;
13415: }
13416: #
13417: # Determines the random seed for a specific context:
13418: #
13419: # parameters:
13420: # symb - in course context the symb for the seed.
13421: # course_id - The course id of the form domain_coursenum.
13422: # domain - Domain for the user.
13423: # course - Course for the user.
13424: # cenv - environment of the course.
13425: #
13426: # NOTE:
13427: # All parameters are picked out of the environment if missing
13428: # or not defined.
13429: # If a symb cannot be determined the current time is used instead.
13430: #
13431: # For a given well defined symb, courside, domain, username,
13432: # and course environment, the seed is reproducible.
13433: #
13434: sub rndseed {
13435: my ($symb,$courseid,$domain,$username, $cenv)=@_;
13436: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
13437: if (!defined($symb)) {
13438: unless ($symb=$wsymb) { return time; }
13439: }
13440: if (!defined $courseid) {
13441: $courseid=$wcourseid;
13442: }
13443: if (!defined $domain) { $domain=$wdomain; }
13444: if (!defined $username) { $username=$wusername }
13445:
13446: my $which;
13447: if (defined($cenv->{'rndseed'})) {
13448: $which = $cenv->{'rndseed'};
13449: } else {
13450: $which =&get_rand_alg($courseid);
13451: }
13452: if (defined(&getCODE())) {
13453:
13454: if ($which eq '64bit5') {
13455: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
13456: } elsif ($which eq '64bit4') {
13457: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
13458: } else {
13459: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
13460: }
13461: } elsif ($which eq '64bit5') {
13462: return &rndseed_64bit5($symb,$courseid,$domain,$username);
13463: } elsif ($which eq '64bit4') {
13464: return &rndseed_64bit4($symb,$courseid,$domain,$username);
13465: } elsif ($which eq '64bit3') {
13466: return &rndseed_64bit3($symb,$courseid,$domain,$username);
13467: } elsif ($which eq '64bit2') {
13468: return &rndseed_64bit2($symb,$courseid,$domain,$username);
13469: } elsif ($which eq '64bit') {
13470: return &rndseed_64bit($symb,$courseid,$domain,$username);
13471: }
13472: return &rndseed_32bit($symb,$courseid,$domain,$username);
13473: }
13474:
13475: sub rndseed_32bit {
13476: my ($symb,$courseid,$domain,$username)=@_;
13477: {
13478: use integer;
13479: my $symbchck=unpack("%32C*",$symb) << 27;
13480: my $symbseed=numval($symb) << 22;
13481: my $namechck=unpack("%32C*",$username) << 17;
13482: my $nameseed=numval($username) << 12;
13483: my $domainseed=unpack("%32C*",$domain) << 7;
13484: my $courseseed=unpack("%32C*",$courseid);
13485: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
13486: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13487: #&logthis("rndseed :$num:$symb");
13488: if ($_64bit) { $num=(($num<<32)>>32); }
13489: return $num;
13490: }
13491: }
13492:
13493: sub rndseed_64bit {
13494: my ($symb,$courseid,$domain,$username)=@_;
13495: {
13496: use integer;
13497: my $symbchck=unpack("%32S*",$symb) << 21;
13498: my $symbseed=numval($symb) << 10;
13499: my $namechck=unpack("%32S*",$username);
13500:
13501: my $nameseed=numval($username) << 21;
13502: my $domainseed=unpack("%32S*",$domain) << 10;
13503: my $courseseed=unpack("%32S*",$courseid);
13504:
13505: my $num1=$symbchck+$symbseed+$namechck;
13506: my $num2=$nameseed+$domainseed+$courseseed;
13507: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13508: #&logthis("rndseed :$num:$symb");
13509: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13510: return "$num1,$num2";
13511: }
13512: }
13513:
13514: sub rndseed_64bit2 {
13515: my ($symb,$courseid,$domain,$username)=@_;
13516: {
13517: use integer;
13518: # strings need to be an even # of cahracters long, it it is odd the
13519: # last characters gets thrown away
13520: my $symbchck=unpack("%32S*",$symb.' ') << 21;
13521: my $symbseed=numval($symb) << 10;
13522: my $namechck=unpack("%32S*",$username.' ');
13523:
13524: my $nameseed=numval($username) << 21;
13525: my $domainseed=unpack("%32S*",$domain.' ') << 10;
13526: my $courseseed=unpack("%32S*",$courseid.' ');
13527:
13528: my $num1=$symbchck+$symbseed+$namechck;
13529: my $num2=$nameseed+$domainseed+$courseseed;
13530: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13531: #&logthis("rndseed :$num:$symb");
13532: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13533: return "$num1,$num2";
13534: }
13535: }
13536:
13537: sub rndseed_64bit3 {
13538: my ($symb,$courseid,$domain,$username)=@_;
13539: {
13540: use integer;
13541: # strings need to be an even # of cahracters long, it it is odd the
13542: # last characters gets thrown away
13543: my $symbchck=unpack("%32S*",$symb.' ') << 21;
13544: my $symbseed=numval2($symb) << 10;
13545: my $namechck=unpack("%32S*",$username.' ');
13546:
13547: my $nameseed=numval2($username) << 21;
13548: my $domainseed=unpack("%32S*",$domain.' ') << 10;
13549: my $courseseed=unpack("%32S*",$courseid.' ');
13550:
13551: my $num1=$symbchck+$symbseed+$namechck;
13552: my $num2=$nameseed+$domainseed+$courseseed;
13553: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13554: #&logthis("rndseed :$num1:$num2:$_64bit");
13555: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13556:
13557: return "$num1:$num2";
13558: }
13559: }
13560:
13561: sub rndseed_64bit4 {
13562: my ($symb,$courseid,$domain,$username)=@_;
13563: {
13564: use integer;
13565: # strings need to be an even # of cahracters long, it it is odd the
13566: # last characters gets thrown away
13567: my $symbchck=unpack("%32S*",$symb.' ') << 21;
13568: my $symbseed=numval3($symb) << 10;
13569: my $namechck=unpack("%32S*",$username.' ');
13570:
13571: my $nameseed=numval3($username) << 21;
13572: my $domainseed=unpack("%32S*",$domain.' ') << 10;
13573: my $courseseed=unpack("%32S*",$courseid.' ');
13574:
13575: my $num1=$symbchck+$symbseed+$namechck;
13576: my $num2=$nameseed+$domainseed+$courseseed;
13577: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13578: #&logthis("rndseed :$num1:$num2:$_64bit");
13579: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13580:
13581: return "$num1:$num2";
13582: }
13583: }
13584:
13585: sub rndseed_64bit5 {
13586: my ($symb,$courseid,$domain,$username)=@_;
13587: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
13588: return "$num1:$num2";
13589: }
13590:
13591: sub rndseed_CODE_64bit {
13592: my ($symb,$courseid,$domain,$username)=@_;
13593: {
13594: use integer;
13595: my $symbchck=unpack("%32S*",$symb.' ') << 16;
13596: my $symbseed=numval2($symb);
13597: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
13598: my $CODEseed=numval(&getCODE());
13599: my $courseseed=unpack("%32S*",$courseid.' ');
13600: my $num1=$symbseed+$CODEchck;
13601: my $num2=$CODEseed+$courseseed+$symbchck;
13602: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
13603: #&logthis("rndseed :$num1:$num2:$symb");
13604: if ($_64bit) { $num1=(($num1<<32)>>32); }
13605: if ($_64bit) { $num2=(($num2<<32)>>32); }
13606: return "$num1:$num2";
13607: }
13608: }
13609:
13610: sub rndseed_CODE_64bit4 {
13611: my ($symb,$courseid,$domain,$username)=@_;
13612: {
13613: use integer;
13614: my $symbchck=unpack("%32S*",$symb.' ') << 16;
13615: my $symbseed=numval3($symb);
13616: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
13617: my $CODEseed=numval3(&getCODE());
13618: my $courseseed=unpack("%32S*",$courseid.' ');
13619: my $num1=$symbseed+$CODEchck;
13620: my $num2=$CODEseed+$courseseed+$symbchck;
13621: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
13622: #&logthis("rndseed :$num1:$num2:$symb");
13623: if ($_64bit) { $num1=(($num1<<32)>>32); }
13624: if ($_64bit) { $num2=(($num2<<32)>>32); }
13625: return "$num1:$num2";
13626: }
13627: }
13628:
13629: sub rndseed_CODE_64bit5 {
13630: my ($symb,$courseid,$domain,$username)=@_;
13631: my $code = &getCODE();
13632: my ($num1,$num2)=&digest("$symb,$courseid,$code");
13633: return "$num1:$num2";
13634: }
13635:
13636: sub setup_random_from_rndseed {
13637: my ($rndseed)=@_;
13638: if ($rndseed =~/([,:])/) {
13639: my ($num1,$num2) = map { abs($_); } (split(/[,:]/,$rndseed));
13640: if ((!$num1) || (!$num2) || ($num1 > 2147483562) || ($num2 > 2147483398)) {
13641: &Math::Random::random_set_seed_from_phrase($rndseed);
13642: } else {
13643: &Math::Random::random_set_seed($num1,$num2);
13644: }
13645: } else {
13646: &Math::Random::random_set_seed_from_phrase($rndseed);
13647: }
13648: }
13649:
13650: sub latest_receipt_algorithm_id {
13651: return 'receipt3';
13652: }
13653:
13654: sub recunique {
13655: my $fucourseid=shift;
13656: my $unique;
13657: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
13658: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
13659: $unique=$env{"course.$fucourseid.internal.encseed"};
13660: } else {
13661: $unique=$perlvar{'lonReceipt'};
13662: }
13663: return unpack("%32C*",$unique);
13664: }
13665:
13666: sub recprefix {
13667: my $fucourseid=shift;
13668: my $prefix;
13669: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
13670: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
13671: $prefix=$env{"course.$fucourseid.internal.encpref"};
13672: } else {
13673: $prefix=$perlvar{'lonHostID'};
13674: }
13675: return unpack("%32C*",$prefix);
13676: }
13677:
13678: sub ireceipt {
13679: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
13680:
13681: my $return =&recprefix($fucourseid).'-';
13682:
13683: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
13684: $env{'request.state'} eq 'construct') {
13685: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
13686: return $return;
13687: }
13688:
13689: my $cuname=unpack("%32C*",$funame);
13690: my $cudom=unpack("%32C*",$fudom);
13691: my $cucourseid=unpack("%32C*",$fucourseid);
13692: my $cusymb=unpack("%32C*",$fusymb);
13693: my $cunique=&recunique($fucourseid);
13694: my $cpart=unpack("%32S*",$part);
13695: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
13696:
13697: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
13698:
13699: $return.= ($cunique%$cuname+
13700: $cunique%$cudom+
13701: $cusymb%$cuname+
13702: $cusymb%$cudom+
13703: $cucourseid%$cuname+
13704: $cucourseid%$cudom+
13705: $cpart%$cuname+
13706: $cpart%$cudom);
13707: } else {
13708: $return.= ($cunique%$cuname+
13709: $cunique%$cudom+
13710: $cusymb%$cuname+
13711: $cusymb%$cudom+
13712: $cucourseid%$cuname+
13713: $cucourseid%$cudom);
13714: }
13715: return $return;
13716: }
13717:
13718: sub receipt {
13719: my ($part)=@_;
13720: my ($symb,$courseid,$domain,$name) = &whichuser();
13721: return &ireceipt($name,$domain,$courseid,$symb,$part);
13722: }
13723:
13724: sub whichuser {
13725: my ($passedsymb)=@_;
13726: my ($symb,$courseid,$domain,$name,$publicuser);
13727: if (defined($env{'form.grade_symb'})) {
13728: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
13729: my $allowed=&allowed('vgr',$tmp_courseid);
13730: if (!$allowed &&
13731: exists($env{'request.course.sec'}) &&
13732: $env{'request.course.sec'} !~ /^\s*$/) {
13733: $allowed=&allowed('vgr',$tmp_courseid.
13734: '/'.$env{'request.course.sec'});
13735: }
13736: if ($allowed) {
13737: ($symb)=&get_env_multiple('form.grade_symb');
13738: $courseid=$tmp_courseid;
13739: ($domain)=&get_env_multiple('form.grade_domain');
13740: ($name)=&get_env_multiple('form.grade_username');
13741: return ($symb,$courseid,$domain,$name,$publicuser);
13742: }
13743: }
13744: if (!$passedsymb) {
13745: $symb=&symbread();
13746: } else {
13747: $symb=$passedsymb;
13748: }
13749: $courseid=$env{'request.course.id'};
13750: $domain=$env{'user.domain'};
13751: $name=$env{'user.name'};
13752: if ($name eq 'public' && $domain eq 'public') {
13753: if (!defined($env{'form.username'})) {
13754: $env{'form.username'}.=time.rand(10000000);
13755: }
13756: $name.=$env{'form.username'};
13757: }
13758: return ($symb,$courseid,$domain,$name,$publicuser);
13759:
13760: }
13761:
13762: # ------------------------------------------------------------ Serves up a file
13763: # returns either the contents of the file or
13764: # -1 if the file doesn't exist
13765: #
13766: # if the target is a file that was uploaded via DOCS,
13767: # a check will be made to see if a current copy exists on the local server,
13768: # if it does this will be served, otherwise a copy will be retrieved from
13769: # the home server for the course and stored in /home/httpd/html/userfiles on
13770: # the local server.
13771:
13772: sub getfile {
13773: my ($file) = @_;
13774: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
13775: &repcopy($file);
13776: return &readfile($file);
13777: }
13778:
13779: sub repcopy_userfile {
13780: my ($file)=@_;
13781: my $londocroot = $perlvar{'lonDocRoot'};
13782: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
13783: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
13784: my ($cdom,$cnum,$filename) =
13785: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
13786: my $uri="/uploaded/$cdom/$cnum/$filename";
13787: if (-e "$file") {
13788: # we already have a local copy, check it out
13789: my @fileinfo = stat($file);
13790: my $rtncode;
13791: my $info;
13792: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
13793: if ($lwpresp ne 'ok') {
13794: # there is no such file anymore, even though we had a local copy
13795: if ($rtncode eq '404') {
13796: unlink($file);
13797: }
13798: return -1;
13799: }
13800: if ($info < $fileinfo[9]) {
13801: # nice, the file we have is up-to-date, just say okay
13802: return 'ok';
13803: } else {
13804: # the file is outdated, get rid of it
13805: unlink($file);
13806: }
13807: }
13808: # one way or the other, at this point, we don't have the file
13809: # construct the correct path for the file
13810: my @parts = ($cdom,$cnum);
13811: if ($filename =~ m|^(.+)/[^/]+$|) {
13812: push @parts, split(/\//,$1);
13813: }
13814: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
13815: foreach my $part (@parts) {
13816: $path .= '/'.$part;
13817: if (!-e $path) {
13818: mkdir($path,0770);
13819: }
13820: }
13821: # now the path exists for sure
13822: # get a user agent
13823: my $transferfile=$file.'.in.transfer';
13824: # FIXME: this should flock
13825: if (-e $transferfile) { return 'ok'; }
13826: my $request;
13827: $uri=~s/^\///;
13828: my $homeserver = &homeserver($cnum,$cdom);
13829: my $hostname = &hostname($homeserver);
13830: my $protocol = $protocol{$homeserver};
13831: $protocol = 'http' if ($protocol ne 'https');
13832: $request=new HTTP::Request('GET',$protocol.'://'.$hostname.'/raw/'.$uri);
13833: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,$transferfile,\%perlvar,'',0,1);
13834: # did it work?
13835: if ($response->is_error()) {
13836: unlink($transferfile);
13837: &logthis("Userfile repcopy failed for $uri");
13838: return -1;
13839: }
13840: # worked, rename the transfer file
13841: rename($transferfile,$file);
13842: return 'ok';
13843: }
13844:
13845: sub tokenwrapper {
13846: my $uri=shift;
13847: $uri=~s|^https?\://([^/]+)||;
13848: $uri=~s|^/||;
13849: $env{'user.environment'}=~/\/([^\/]+)\.id/;
13850: my $token=$1;
13851: my (undef,$udom,$uname,$file)=split('/',$uri,4);
13852: if ($udom && $uname && $file) {
13853: $file=~s|(\?\.*)*$||;
13854: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
13855: my $homeserver = &homeserver($uname,$udom);
13856: my $hostname = &hostname($homeserver);
13857: my $protocol = $protocol{$homeserver};
13858: $protocol = 'http' if ($protocol ne 'https');
13859: return $protocol.'://'.$hostname.'/'.$uri.
13860: (($uri=~/\?/)?'&':'?').'token='.$token.
13861: '&tokenissued='.$perlvar{'lonHostID'};
13862: } else {
13863: return '/adm/notfound.html';
13864: }
13865: }
13866:
13867: # call with reqtype HEAD: get last modification time
13868: # call with reqtype GET: get the file contents
13869: # Do not call this with reqtype GET for large files! It loads everything into memory
13870: #
13871: sub getuploaded {
13872: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
13873: $uri=~s/^\///;
13874: my $homeserver = &homeserver($cnum,$cdom);
13875: my $hostname = &hostname($homeserver);
13876: my $protocol = $protocol{$homeserver};
13877: $protocol = 'http' if ($protocol ne 'https');
13878: $uri = $protocol.'://'.$hostname.'/raw/'.$uri;
13879: my $request=new HTTP::Request($reqtype,$uri);
13880: my $response=&LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,'',0,1);
13881: $$rtncode = $response->code;
13882: if (! $response->is_success()) {
13883: return 'failed';
13884: }
13885: if ($reqtype eq 'HEAD') {
13886: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
13887: } elsif ($reqtype eq 'GET') {
13888: $$info = $response->content;
13889: }
13890: return 'ok';
13891: }
13892:
13893: sub readfile {
13894: my $file = shift;
13895: if ( (! -e $file ) || ($file eq '') ) { return -1; };
13896: my $fh;
13897: open($fh,"<",$file);
13898: my $a='';
13899: while (my $line = <$fh>) { $a .= $line; }
13900: return $a;
13901: }
13902:
13903: sub filelocation {
13904: my ($dir,$file) = @_;
13905: my $location;
13906: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
13907:
13908: if ($file =~ m-^/adm/-) {
13909: $file=~s-^/adm/wrapper/-/-;
13910: $file=~s-^/adm/coursedocs/showdoc/-/-;
13911: }
13912:
13913: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
13914: $location = $file;
13915: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
13916: my ($udom,$uname,$filename)=
13917: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
13918: my $home=&homeserver($uname,$udom);
13919: my $is_me=0;
13920: my @ids=¤t_machine_ids();
13921: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
13922: if ($is_me) {
13923: $location=propath($udom,$uname).'/userfiles/'.$filename;
13924: } else {
13925: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
13926: $udom.'/'.$uname.'/'.$filename;
13927: }
13928: } elsif ($file =~ m-^/adm/-) {
13929: $location = $perlvar{'lonDocRoot'}.'/'.$file;
13930: } else {
13931: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
13932: $file=~s:^/(res|priv)/:/:;
13933: my $space=$1;
13934: if ( !( $file =~ m:^/:) ) {
13935: $location = $dir. '/'.$file;
13936: } else {
13937: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
13938: }
13939: }
13940: $location=~s://+:/:g; # remove duplicate /
13941: while ($location=~m{/\.\./}) {
13942: if ($location =~ m{/[^/]+/\.\./}) {
13943: $location=~ s{/[^/]+/\.\./}{/}g;
13944: } else {
13945: $location=~ s{/\.\./}{/}g;
13946: }
13947: } #remove dir/..
13948: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
13949: return $location;
13950: }
13951:
13952: sub hreflocation {
13953: my ($dir,$file)=@_;
13954: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
13955: $file=filelocation($dir,$file);
13956: } elsif ($file=~m-^/adm/-) {
13957: $file=~s-^/adm/wrapper/-/-;
13958: $file=~s-^/adm/coursedocs/showdoc/-/-;
13959: }
13960: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
13961: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
13962: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
13963: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
13964: {/uploaded/$1/$2/}x;
13965: }
13966: if ($file=~ m{^/userfiles/}) {
13967: $file =~ s{^/userfiles/}{/uploaded/};
13968: }
13969: return $file;
13970: }
13971:
13972:
13973:
13974:
13975:
13976: sub current_machine_domains {
13977: return &machine_domains(&hostname($perlvar{'lonHostID'}));
13978: }
13979:
13980: sub machine_domains {
13981: my ($hostname) = @_;
13982: my @domains;
13983: my %hostname = &all_hostnames();
13984: while( my($id, $name) = each(%hostname)) {
13985: # &logthis("-$id-$name-$hostname-");
13986: if ($hostname eq $name) {
13987: push(@domains,&host_domain($id));
13988: }
13989: }
13990: return @domains;
13991: }
13992:
13993: sub current_machine_ids {
13994: return &machine_ids(&hostname($perlvar{'lonHostID'}));
13995: }
13996:
13997: sub machine_ids {
13998: my ($hostname) = @_;
13999: $hostname ||= &hostname($perlvar{'lonHostID'});
14000: my @ids;
14001: my %name_to_host = &all_names();
14002: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
14003: return @{ $name_to_host{$hostname} };
14004: }
14005: return;
14006: }
14007:
14008: sub additional_machine_domains {
14009: my @domains;
14010: open(my $fh,"<","$perlvar{'lonTabDir'}/expected_domains.tab");
14011: while( my $line = <$fh>) {
14012: $line =~ s/\s//g;
14013: push(@domains,$line);
14014: }
14015: return @domains;
14016: }
14017:
14018: sub default_login_domain {
14019: my $domain = $perlvar{'lonDefDomain'};
14020: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
14021: foreach my $posdom (¤t_machine_domains(),
14022: &additional_machine_domains()) {
14023: if (lc($posdom) eq lc($testdomain)) {
14024: $domain=$posdom;
14025: last;
14026: }
14027: }
14028: return $domain;
14029: }
14030:
14031: sub uses_sts {
14032: my ($ignore_cache) = @_;
14033: my $lonhost = $perlvar{'lonHostID'};
14034: my $hostname = &hostname($lonhost);
14035: my $sts_on;
14036: if ($protocol{$lonhost} eq 'https') {
14037: my $cachetime = 12*3600;
14038: if (!$ignore_cache) {
14039: ($sts_on,my $cached)=&is_cached_new('stspolicy',$lonhost);
14040: if (defined($cached)) {
14041: return $sts_on;
14042: }
14043: }
14044: my $url = $protocol{$lonhost}.'://'.$hostname.'/index.html';
14045: my $request=new HTTP::Request('HEAD',$url);
14046: my $response=&LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,'','','',1);
14047: if ($response->is_success) {
14048: my $has_sts = $response->header('Strict-Transport-Security');
14049: if ($has_sts eq '') {
14050: $sts_on = 0;
14051: } else {
14052: if ($has_sts =~ /\Qmax-age=\E(\d+)/) {
14053: my $maxage = $1;
14054: if ($maxage) {
14055: $sts_on = 1;
14056: } else {
14057: $sts_on = 0;
14058: }
14059: } else {
14060: $sts_on = 0;
14061: }
14062: }
14063: return &do_cache_new('stspolicy',$lonhost,$sts_on,$cachetime);
14064: }
14065: }
14066: return;
14067: }
14068:
14069: # ------------------------------------------------------------- Declutters URLs
14070:
14071: sub declutter {
14072: my $thisfn=shift;
14073: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
14074: unless ($thisfn=~m{^/home/httpd/html/priv/}) {
14075: $thisfn=~s{^/home/httpd/html}{};
14076: }
14077: $thisfn=~s/^\///;
14078: $thisfn=~s|^adm/wrapper/||;
14079: $thisfn=~s|^adm/coursedocs/showdoc/||;
14080: $thisfn=~s/^res\///;
14081: $thisfn=~s/^priv\///;
14082: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
14083: $thisfn=~s/\?.+$//;
14084: }
14085: return $thisfn;
14086: }
14087:
14088: # ------------------------------------------------------------- Clutter up URLs
14089:
14090: sub clutter {
14091: my $thisfn='/'.&declutter(shift);
14092: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
14093: || $thisfn =~ m{^/adm/(includes|pages)} ) {
14094: $thisfn='/res'.$thisfn;
14095: }
14096: if ($thisfn !~m|^/adm|) {
14097: if ($thisfn =~ m|^/ext/|) {
14098: $thisfn='/adm/wrapper'.$thisfn;
14099: } else {
14100: my ($ext) = ($thisfn =~ /\.(\w+)$/);
14101: my $embstyle=&Apache::loncommon::fileembstyle($ext);
14102: if ($embstyle eq 'ssi'
14103: || ($embstyle eq 'hdn')
14104: || ($embstyle eq 'rat')
14105: || ($embstyle eq 'prv')
14106: || ($embstyle eq 'ign')) {
14107: #do nothing with these
14108: } elsif (($embstyle eq 'img')
14109: || ($embstyle eq 'emb')
14110: || ($embstyle eq 'wrp')) {
14111: $thisfn='/adm/wrapper'.$thisfn;
14112: } elsif ($embstyle eq 'unk'
14113: && $thisfn!~/\.(sequence|page)$/) {
14114: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
14115: } else {
14116: # &logthis("Got a blank emb style");
14117: }
14118: }
14119: } elsif ($thisfn =~ m{^/adm/$match_domain/$match_courseid/\d+/ext\.tool$}) {
14120: $thisfn='/adm/wrapper'.$thisfn;
14121: }
14122: return $thisfn;
14123: }
14124:
14125: sub clutter_with_no_wrapper {
14126: my $uri = &clutter(shift);
14127: if ($uri =~ m-^/adm/-) {
14128: $uri =~ s-^/adm/wrapper/-/-;
14129: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
14130: }
14131: return $uri;
14132: }
14133:
14134: sub freeze_escape {
14135: my ($value)=@_;
14136: if (ref($value)) {
14137: $value=&nfreeze($value);
14138: return '__FROZEN__'.&escape($value);
14139: }
14140: return &escape($value);
14141: }
14142:
14143:
14144: sub thaw_unescape {
14145: my ($value)=@_;
14146: if ($value =~ /^__FROZEN__/) {
14147: substr($value,0,10,undef);
14148: $value=&unescape($value);
14149: return &thaw($value);
14150: }
14151: return &unescape($value);
14152: }
14153:
14154: sub correct_line_ends {
14155: my ($result)=@_;
14156: $$result =~s/\r\n/\n/mg;
14157: $$result =~s/\r/\n/mg;
14158: }
14159: # ================================================================ Main Program
14160:
14161: sub goodbye {
14162: &logthis("Starting Shut down");
14163: #not converted to using infrastruture and probably shouldn't be
14164: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
14165: #converted
14166: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
14167: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
14168: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
14169: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
14170: #1.1 only
14171: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
14172: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
14173: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
14174: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
14175: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
14176: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
14177: &logthis(sprintf("%-20s is %s",'hits',$hits));
14178: &flushcourselogs();
14179: &logthis("Shutting down");
14180: }
14181:
14182: sub get_dns {
14183: my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
14184: if (!$ignore_cache) {
14185: my ($content,$cached)=
14186: &Apache::lonnet::is_cached_new('dns',$url);
14187: if ($cached) {
14188: &$func($content,$hashref);
14189: return;
14190: }
14191: }
14192:
14193: my %alldns;
14194: if (open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab")) {
14195: foreach my $dns (<$config>) {
14196: next if ($dns !~ /^\^(\S*)/x);
14197: my $line = $1;
14198: my ($host,$protocol) = split(/:/,$line);
14199: if ($protocol ne 'https') {
14200: $protocol = 'http';
14201: }
14202: $alldns{$host} = $protocol;
14203: }
14204: close($config);
14205: }
14206: while (%alldns) {
14207: my ($dns) = sort { $b cmp $a } keys(%alldns);
14208: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
14209: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar,30,0);
14210: delete($alldns{$dns});
14211: next if ($response->is_error());
14212: if ($url eq '/adm/dns/loncapaCRL') {
14213: return &$func($response);
14214: } else {
14215: my @content = split("\n",$response->content);
14216: unless ($nocache) {
14217: &do_cache_new('dns',$url,\@content,30*24*60*60);
14218: }
14219: &$func(\@content,$hashref);
14220: return;
14221: }
14222: }
14223: my $which = (split('/',$url,4))[3];
14224: if ($which eq 'loncapaCRL') {
14225: my $diskfile = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
14226: if (-e $diskfile) {
14227: &logthis("unable to contact DNS, on disk file $diskfile not updated");
14228: } else {
14229: &logthis("unable to contact DNS, no on disk file $diskfile available");
14230: }
14231: } else {
14232: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
14233: if (open(my $config,"<","$perlvar{'lonTabDir'}/dns_$which.tab")) {
14234: my @content = <$config>;
14235: close($config);
14236: &$func(\@content,$hashref);
14237: }
14238: }
14239: return;
14240: }
14241:
14242: # ------------------------------------------------------Get DNS checksums file
14243: sub parse_dns_checksums_tab {
14244: my ($lines,$hashref) = @_;
14245: my $lonhost = $perlvar{'lonHostID'};
14246: my $machine_dom = &Apache::lonnet::host_domain($lonhost);
14247: my $loncaparev = &get_server_loncaparev($machine_dom);
14248: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
14249: my $webconfdir = '/etc/httpd/conf';
14250: if ($distro =~ /^(ubuntu|debian)(\d+)$/) {
14251: $webconfdir = '/etc/apache2';
14252: } elsif ($distro =~ /^sles(\d+)$/) {
14253: if ($1 >= 10) {
14254: $webconfdir = '/etc/apache2';
14255: }
14256: } elsif ($distro =~ /^suse(\d+\.\d+)$/) {
14257: if ($1 >= 10.0) {
14258: $webconfdir = '/etc/apache2';
14259: }
14260: }
14261: my ($release,$timestamp) = split(/\-/,$loncaparev);
14262: my (%chksum,%revnum);
14263: if (ref($lines) eq 'ARRAY') {
14264: chomp(@{$lines});
14265: my $version = shift(@{$lines});
14266: if ($version eq $release) {
14267: foreach my $line (@{$lines}) {
14268: my ($file,$version,$shasum) = split(/,/,$line);
14269: if ($file =~ m{^/etc/httpd/conf}) {
14270: if ($webconfdir eq '/etc/apache2') {
14271: $file =~ s{^\Q/etc/httpd/conf/\E}{$webconfdir/};
14272: }
14273: }
14274: $chksum{$file} = $shasum;
14275: $revnum{$file} = $version;
14276: }
14277: if (ref($hashref) eq 'HASH') {
14278: %{$hashref} = (
14279: sums => \%chksum,
14280: versions => \%revnum,
14281: );
14282: }
14283: }
14284: }
14285: return;
14286: }
14287:
14288: sub fetch_dns_checksums {
14289: my %checksums;
14290: my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
14291: my $loncaparev = &get_server_loncaparev($machine_dom,$perlvar{'lonHostID'});
14292: my ($release,$timestamp) = split(/\-/,$loncaparev);
14293: &get_dns("/adm/dns/checksums/$release",\&parse_dns_checksums_tab,1,1,
14294: \%checksums);
14295: return \%checksums;
14296: }
14297:
14298: sub fetch_crl_pemfile {
14299: return &get_dns("/adm/dns/loncapaCRL",\&save_crl_pem,1,1);
14300: }
14301:
14302: sub save_crl_pem {
14303: my ($response) = @_;
14304: my ($msg,$hadchanges);
14305: if (ref($response)) {
14306: my $now = time;
14307: my $lonca = $perlvar{'lonCertificateDirectory'}.'/'.$perlvar{'lonnetCertificateAuthority'};
14308: my $tmpcrl = $tmpdir.'/'.$perlvar{'lonnetCertRevocationList'}.'_'.$now.'.'.$$.'.tmp';
14309: if (open(my $fh,'>',"$tmpcrl")) {
14310: print $fh $response->content;
14311: close($fh);
14312: if (-e $lonca) {
14313: if (open(PIPE,"openssl crl -in $tmpcrl -inform pem -CAfile $lonca -noout 2>&1 |")) {
14314: my $check = <PIPE>;
14315: close(PIPE);
14316: chomp($check);
14317: if ($check eq 'verify OK') {
14318: my $dest = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
14319: my $backup;
14320: if (-e $dest) {
14321: if (&File::Copy::move($dest,"$dest.bak")) {
14322: $backup = 'ok';
14323: }
14324: }
14325: if (&File::Copy::move($tmpcrl,$dest)) {
14326: $msg = 'ok';
14327: if ($backup) {
14328: my (%oldnums,%newnums);
14329: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest.bak |grep 'Serial Number' |")) {
14330: while (<PIPE>) {
14331: $oldnums{(split(/:/))[1]} = 1;
14332: }
14333: close(PIPE);
14334: }
14335: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest |grep 'Serial Number' |")) {
14336: while(<PIPE>) {
14337: $newnums{(split(/:/))[1]} = 1;
14338: }
14339: close(PIPE);
14340: }
14341: foreach my $key (sort {$b <=> $a } (keys(%newnums))) {
14342: unless (exists($oldnums{$key})) {
14343: $hadchanges = 1;
14344: last;
14345: }
14346: }
14347: unless ($hadchanges) {
14348: foreach my $key (sort {$b <=> $a } (keys(%oldnums))) {
14349: unless (exists($newnums{$key})) {
14350: $hadchanges = 1;
14351: last;
14352: }
14353: }
14354: }
14355: }
14356: }
14357: } else {
14358: unlink($tmpcrl);
14359: }
14360: } else {
14361: unlink($tmpcrl);
14362: }
14363: } else {
14364: unlink($tmpcrl);
14365: }
14366: }
14367: }
14368: return ($msg,$hadchanges);
14369: }
14370:
14371: # ------------------------------------------------------------ Read domain file
14372: {
14373: my $loaded;
14374: my %domain;
14375:
14376: sub parse_domain_tab {
14377: my ($lines) = @_;
14378: foreach my $line (@$lines) {
14379: next if ($line =~ /^(\#|\s*$ )/x);
14380:
14381: chomp($line);
14382: my ($name,@elements) = split(/:/,$line,9);
14383: my %this_domain;
14384: foreach my $field ('description', 'auth_def', 'auth_arg_def',
14385: 'lang_def', 'city', 'longi', 'lati',
14386: 'primary') {
14387: $this_domain{$field} = shift(@elements);
14388: }
14389: $domain{$name} = \%this_domain;
14390: }
14391: }
14392:
14393: sub reset_domain_info {
14394: undef($loaded);
14395: undef(%domain);
14396: }
14397:
14398: sub load_domain_tab {
14399: my ($ignore_cache,$nocache) = @_;
14400: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache,$nocache);
14401: my $fh;
14402: if (open($fh,"<",$perlvar{'lonTabDir'}.'/domain.tab')) {
14403: my @lines = <$fh>;
14404: &parse_domain_tab(\@lines);
14405: }
14406: close($fh);
14407: $loaded = 1;
14408: }
14409:
14410: sub domain {
14411: &load_domain_tab() if (!$loaded);
14412:
14413: my ($name,$what) = @_;
14414: return if ( !exists($domain{$name}) );
14415:
14416: if (!$what) {
14417: return $domain{$name}{'description'};
14418: }
14419: return $domain{$name}{$what};
14420: }
14421:
14422: sub domain_info {
14423: &load_domain_tab() if (!$loaded);
14424: return %domain;
14425: }
14426:
14427: }
14428:
14429:
14430: # ------------------------------------------------------------- Read hosts file
14431: {
14432: my %hostname;
14433: my %hostdom;
14434: my %libserv;
14435: my $loaded;
14436: my %name_to_host;
14437: my %internetdom;
14438: my %LC_dns_serv;
14439:
14440: sub parse_hosts_tab {
14441: my ($file) = @_;
14442: foreach my $configline (@$file) {
14443: next if ($configline =~ /^(\#|\s*$ )/x);
14444: chomp($configline);
14445: if ($configline =~ /^\^/) {
14446: if ($configline =~ /^\^([\w.\-]+)/) {
14447: $LC_dns_serv{$1} = 1;
14448: }
14449: next;
14450: }
14451: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
14452: $name=~s/\s//g;
14453: if ($id && $domain && $role && $name) {
14454: if ((exists($hostname{$id})) && ($hostname{$id} ne '')) {
14455: my $curr = $hostname{$id};
14456: my $skip;
14457: if (ref($name_to_host{$curr}) eq 'ARRAY') {
14458: if (($curr eq $name) && (@{$name_to_host{$curr}} == 1)) {
14459: $skip = 1;
14460: } else {
14461: @{$name_to_host{$curr}} = grep { $_ ne $id } @{$name_to_host{$curr}};
14462: }
14463: }
14464: unless ($skip) {
14465: push(@{$name_to_host{$name}},$id);
14466: }
14467: } else {
14468: push(@{$name_to_host{$name}},$id);
14469: }
14470: $hostname{$id}=$name;
14471: $hostdom{$id}=$domain;
14472: if ($role eq 'library') { $libserv{$id}=$name; }
14473: if (defined($protocol)) {
14474: if ($protocol eq 'https') {
14475: $protocol{$id} = $protocol;
14476: } else {
14477: $protocol{$id} = 'http';
14478: }
14479: } else {
14480: $protocol{$id} = 'http';
14481: }
14482: if (defined($intdom)) {
14483: $internetdom{$id} = $intdom;
14484: }
14485: }
14486: }
14487: }
14488:
14489: sub reset_hosts_info {
14490: &purge_remembered();
14491: &reset_domain_info();
14492: &reset_hosts_ip_info();
14493: undef(%internetdom);
14494: undef(%name_to_host);
14495: undef(%hostname);
14496: undef(%hostdom);
14497: undef(%libserv);
14498: undef($loaded);
14499: }
14500:
14501: sub load_hosts_tab {
14502: my ($ignore_cache,$nocache) = @_;
14503: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache,$nocache);
14504: open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab");
14505: my @config = <$config>;
14506: &parse_hosts_tab(\@config);
14507: close($config);
14508: $loaded=1;
14509: }
14510:
14511: sub hostname {
14512: &load_hosts_tab() if (!$loaded);
14513:
14514: my ($lonid) = @_;
14515: return $hostname{$lonid};
14516: }
14517:
14518: sub all_hostnames {
14519: &load_hosts_tab() if (!$loaded);
14520:
14521: return %hostname;
14522: }
14523:
14524: sub all_names {
14525: my ($ignore_cache,$nocache) = @_;
14526: &load_hosts_tab($ignore_cache,$nocache) if (!$loaded);
14527:
14528: return %name_to_host;
14529: }
14530:
14531: sub all_host_domain {
14532: &load_hosts_tab() if (!$loaded);
14533: return %hostdom;
14534: }
14535:
14536: sub all_host_intdom {
14537: &load_hosts_tab() if (!$loaded);
14538: return %internetdom;
14539: }
14540:
14541: sub is_library {
14542: &load_hosts_tab() if (!$loaded);
14543:
14544: return exists($libserv{$_[0]});
14545: }
14546:
14547: sub all_library {
14548: &load_hosts_tab() if (!$loaded);
14549:
14550: return %libserv;
14551: }
14552:
14553: sub unique_library {
14554: #2x reverse removes all hostnames that appear more than once
14555: my %unique = reverse &all_library();
14556: return reverse %unique;
14557: }
14558:
14559: sub get_servers {
14560: &load_hosts_tab() if (!$loaded);
14561:
14562: my ($domain,$type) = @_;
14563: my %possible_hosts = ($type eq 'library') ? %libserv
14564: : %hostname;
14565: my %result;
14566: if (ref($domain) eq 'ARRAY') {
14567: while ( my ($host,$hostname) = each(%possible_hosts)) {
14568: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
14569: $result{$host} = $hostname;
14570: }
14571: }
14572: } else {
14573: while ( my ($host,$hostname) = each(%possible_hosts)) {
14574: if ($hostdom{$host} eq $domain) {
14575: $result{$host} = $hostname;
14576: }
14577: }
14578: }
14579: return %result;
14580: }
14581:
14582: sub get_unique_servers {
14583: my %unique = reverse &get_servers(@_);
14584: return reverse %unique;
14585: }
14586:
14587: sub host_domain {
14588: &load_hosts_tab() if (!$loaded);
14589:
14590: my ($lonid) = @_;
14591: return $hostdom{$lonid};
14592: }
14593:
14594: sub all_domains {
14595: &load_hosts_tab() if (!$loaded);
14596:
14597: my %seen;
14598: my @uniq = grep(!$seen{$_}++, values(%hostdom));
14599: return @uniq;
14600: }
14601:
14602: sub internet_dom {
14603: &load_hosts_tab() if (!$loaded);
14604:
14605: my ($lonid) = @_;
14606: return $internetdom{$lonid};
14607: }
14608:
14609: sub is_LC_dns {
14610: &load_hosts_tab() if (!$loaded);
14611:
14612: my ($hostname) = @_;
14613: return exists($LC_dns_serv{$hostname});
14614: }
14615:
14616: }
14617:
14618: {
14619: my %iphost;
14620: my %name_to_ip;
14621: my %lonid_to_ip;
14622:
14623: sub get_hosts_from_ip {
14624: my ($ip) = @_;
14625: my %iphosts = &get_iphost();
14626: if (ref($iphosts{$ip})) {
14627: return @{$iphosts{$ip}};
14628: }
14629: return;
14630: }
14631:
14632: sub reset_hosts_ip_info {
14633: undef(%iphost);
14634: undef(%name_to_ip);
14635: undef(%lonid_to_ip);
14636: }
14637:
14638: sub get_host_ip {
14639: my ($lonid) = @_;
14640: if (exists($lonid_to_ip{$lonid})) {
14641: return $lonid_to_ip{$lonid};
14642: }
14643: my $name=&hostname($lonid);
14644: my $ip = gethostbyname($name);
14645: return if (!$ip || length($ip) ne 4);
14646: $ip=inet_ntoa($ip);
14647: $name_to_ip{$name} = $ip;
14648: $lonid_to_ip{$lonid} = $ip;
14649: return $ip;
14650: }
14651:
14652: sub get_iphost {
14653: my ($ignore_cache,$nocache) = @_;
14654:
14655: if (!$ignore_cache) {
14656: if (%iphost) {
14657: return %iphost;
14658: }
14659: my ($ip_info,$cached)=
14660: &Apache::lonnet::is_cached_new('iphost','iphost');
14661: if ($cached) {
14662: %iphost = %{$ip_info->[0]};
14663: %name_to_ip = %{$ip_info->[1]};
14664: %lonid_to_ip = %{$ip_info->[2]};
14665: return %iphost;
14666: }
14667: }
14668:
14669: # get yesterday's info for fallback
14670: my %old_name_to_ip;
14671: my ($ip_info,$cached)=
14672: &Apache::lonnet::is_cached_new('iphost','iphost');
14673: if ($cached) {
14674: %old_name_to_ip = %{$ip_info->[1]};
14675: }
14676:
14677: my %name_to_host = &all_names($ignore_cache,$nocache);
14678: foreach my $name (keys(%name_to_host)) {
14679: my $ip;
14680: if (!exists($name_to_ip{$name})) {
14681: $ip = gethostbyname($name);
14682: if (!$ip || length($ip) ne 4) {
14683: if (defined($old_name_to_ip{$name})) {
14684: $ip = $old_name_to_ip{$name};
14685: &logthis("Can't find $name defaulting to old $ip");
14686: } else {
14687: &logthis("Name $name no IP found");
14688: next;
14689: }
14690: } else {
14691: $ip=inet_ntoa($ip);
14692: }
14693: $name_to_ip{$name} = $ip;
14694: } else {
14695: $ip = $name_to_ip{$name};
14696: }
14697: foreach my $id (@{ $name_to_host{$name} }) {
14698: $lonid_to_ip{$id} = $ip;
14699: }
14700: push(@{$iphost{$ip}},@{$name_to_host{$name}});
14701: }
14702: unless ($nocache) {
14703: &do_cache_new('iphost','iphost',
14704: [\%iphost,\%name_to_ip,\%lonid_to_ip],
14705: 48*60*60);
14706: }
14707:
14708: return %iphost;
14709: }
14710:
14711: #
14712: # Given a DNS returns the loncapa host name for that DNS
14713: #
14714: sub host_from_dns {
14715: my ($dns) = @_;
14716: my @hosts;
14717: my $ip;
14718:
14719: if (exists($name_to_ip{$dns})) {
14720: $ip = $name_to_ip{$dns};
14721: }
14722: if (!$ip) {
14723: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
14724: if (length($ip) == 4) {
14725: $ip = &IO::Socket::inet_ntoa($ip);
14726: }
14727: }
14728: if ($ip) {
14729: @hosts = get_hosts_from_ip($ip);
14730: return $hosts[0];
14731: }
14732: return undef;
14733: }
14734:
14735: sub get_internet_names {
14736: my ($lonid) = @_;
14737: return if ($lonid eq '');
14738: my ($idnref,$cached)=
14739: &Apache::lonnet::is_cached_new('internetnames',$lonid);
14740: if ($cached) {
14741: return $idnref;
14742: }
14743: my $ip = &get_host_ip($lonid);
14744: my @hosts = &get_hosts_from_ip($ip);
14745: my %iphost = &get_iphost();
14746: my (@idns,%seen);
14747: foreach my $id (@hosts) {
14748: my $dom = &host_domain($id);
14749: my $prim_id = &domain($dom,'primary');
14750: my $prim_ip = &get_host_ip($prim_id);
14751: next if ($seen{$prim_ip});
14752: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
14753: foreach my $id (@{$iphost{$prim_ip}}) {
14754: my $intdom = &internet_dom($id);
14755: unless (grep(/^\Q$intdom\E$/,@idns)) {
14756: push(@idns,$intdom);
14757: }
14758: }
14759: }
14760: $seen{$prim_ip} = 1;
14761: }
14762: return &do_cache_new('internetnames',$lonid,\@idns,12*60*60);
14763: }
14764:
14765: }
14766:
14767: sub all_loncaparevs {
14768: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11);
14769: }
14770:
14771: # ---------------------------------------------------------- Read loncaparev table
14772: {
14773: sub load_loncaparevs {
14774: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
14775: if (open(my $config,"<","$perlvar{'lonTabDir'}/loncaparevs.tab")) {
14776: while (my $configline=<$config>) {
14777: chomp($configline);
14778: my ($hostid,$loncaparev)=split(/:/,$configline);
14779: $loncaparevs{$hostid}=$loncaparev;
14780: }
14781: close($config);
14782: }
14783: }
14784: }
14785: }
14786:
14787: # ---------------------------------------------------------- Read serverhostID table
14788: {
14789: sub load_serverhomeIDs {
14790: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
14791: if (open(my $config,"<","$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
14792: while (my $configline=<$config>) {
14793: chomp($configline);
14794: my ($name,$id)=split(/:/,$configline);
14795: $serverhomeIDs{$name}=$id;
14796: }
14797: close($config);
14798: }
14799: }
14800: }
14801: }
14802:
14803:
14804: BEGIN {
14805:
14806: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
14807: unless ($readit) {
14808: {
14809: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
14810: %perlvar = (%perlvar,%{$configvars});
14811: }
14812:
14813:
14814: # ------------------------------------------------------ Read spare server file
14815: {
14816: open(my $config,"<","$perlvar{'lonTabDir'}/spare.tab");
14817:
14818: while (my $configline=<$config>) {
14819: chomp($configline);
14820: if ($configline) {
14821: my ($host,$type) = split(':',$configline,2);
14822: if (!defined($type) || $type eq '') { $type = 'default' };
14823: push(@{ $spareid{$type} }, $host);
14824: }
14825: }
14826: close($config);
14827: }
14828: # ------------------------------------------------------------ Read permissions
14829: {
14830: open(my $config,"<","$perlvar{'lonTabDir'}/roles.tab");
14831:
14832: while (my $configline=<$config>) {
14833: chomp($configline);
14834: if ($configline) {
14835: my ($role,$perm)=split(/ /,$configline);
14836: if ($perm ne '') { $pr{$role}=$perm; }
14837: }
14838: }
14839: close($config);
14840: }
14841:
14842: # -------------------------------------------- Read plain texts for permissions
14843: {
14844: open(my $config,"<","$perlvar{'lonTabDir'}/rolesplain.tab");
14845:
14846: while (my $configline=<$config>) {
14847: chomp($configline);
14848: if ($configline) {
14849: my ($short,@plain)=split(/:/,$configline);
14850: %{$prp{$short}} = ();
14851: if (@plain > 0) {
14852: $prp{$short}{'std'} = $plain[0];
14853: for (my $i=1; $i<@plain; $i++) {
14854: $prp{$short}{'alt'.$i} = $plain[$i];
14855: }
14856: }
14857: }
14858: }
14859: close($config);
14860: }
14861:
14862: # ---------------------------------------------------------- Read package table
14863: {
14864: open(my $config,"<","$perlvar{'lonTabDir'}/packages.tab");
14865:
14866: while (my $configline=<$config>) {
14867: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
14868: chomp($configline);
14869: my ($short,$plain)=split(/:/,$configline);
14870: my ($pack,$name)=split(/\&/,$short);
14871: if ($plain ne '') {
14872: $packagetab{$pack.'&'.$name.'&name'}=$name;
14873: $packagetab{$short}=$plain;
14874: }
14875: }
14876: close($config);
14877: }
14878:
14879: # ---------------------------------------------------------- Read loncaparev table
14880:
14881: &load_loncaparevs();
14882:
14883: # ---------------------------------------------------------- Read serverhostID table
14884:
14885: &load_serverhomeIDs();
14886:
14887: # ---------------------------------------------------------- Read releaseslist XML
14888: {
14889: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
14890: if (-e $file) {
14891: my $parser = HTML::LCParser->new($file);
14892: while (my $token = $parser->get_token()) {
14893: if ($token->[0] eq 'S') {
14894: my $item = $token->[1];
14895: my $name = $token->[2]{'name'};
14896: my $value = $token->[2]{'value'};
14897: my $valuematch = $token->[2]{'valuematch'};
14898: my $namematch = $token->[2]{'namematch'};
14899: if ($item eq 'parameter') {
14900: if (($namematch ne '') || (($name ne '') && ($value ne '' || $valuematch ne ''))) {
14901: my $release = $parser->get_text();
14902: $release =~ s/(^\s*|\s*$ )//gx;
14903: $needsrelease{$item.':'.$name.':'.$value.':'.$valuematch.':'.$namematch} = $release;
14904: }
14905: } elsif ($item ne '' && $name ne '') {
14906: my $release = $parser->get_text();
14907: $release =~ s/(^\s*|\s*$ )//gx;
14908: $needsrelease{$item.':'.$name.':'.$value} = $release;
14909: }
14910: }
14911: }
14912: }
14913: }
14914:
14915: # ---------------------------------------------------------- Read managers table
14916: {
14917: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
14918: if (open(my $config,"<","$perlvar{'lonTabDir'}/managers.tab")) {
14919: while (my $configline=<$config>) {
14920: chomp($configline);
14921: next if ($configline =~ /^\#/);
14922: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
14923: $managerstab{$configline} = 1;
14924: }
14925: }
14926: close($config);
14927: }
14928: }
14929: }
14930:
14931: # ------------- set up temporary directory
14932: {
14933: $tmpdir = LONCAPA::tempdir();
14934:
14935: }
14936:
14937: # ------------- set default texengine (domain default overrides this)
14938: {
14939: $deftex = LONCAPA::texengine();
14940: }
14941:
14942: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
14943: 'compress_threshold'=> 20_000,
14944: });
14945:
14946: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
14947: $dumpcount=0;
14948: $locknum=0;
14949:
14950: &logtouch();
14951: &logthis('<font color="yellow">INFO: Read configuration</font>');
14952: $readit=1;
14953: {
14954: use integer;
14955: my $test=(2**32)+1;
14956: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
14957: &logthis(" Detected 64bit platform ($_64bit)");
14958: }
14959: }
14960: }
14961:
14962: 1;
14963: __END__
14964:
14965: =pod
14966:
14967: =head1 NAME
14968:
14969: Apache::lonnet - Subroutines to ask questions about things in the network.
14970:
14971: =head1 SYNOPSIS
14972:
14973: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
14974:
14975: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
14976:
14977: Common parameters:
14978:
14979: =over 4
14980:
14981: =item *
14982:
14983: $uname : an internal username (if $cname expecting a course Id specifically)
14984:
14985: =item *
14986:
14987: $udom : a domain (if $cdom expecting a course's domain specifically)
14988:
14989: =item *
14990:
14991: $symb : a resource instance identifier
14992:
14993: =item *
14994:
14995: $namespace : the name of a .db file that contains the data needed or
14996: being set.
14997:
14998: =back
14999:
15000: =head1 OVERVIEW
15001:
15002: lonnet provides subroutines which interact with the
15003: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
15004: about classes, users, and resources.
15005:
15006: For many of these objects you can also use this to store data about
15007: them or modify them in various ways.
15008:
15009: =head2 Symbs
15010:
15011: To identify a specific instance of a resource, LON-CAPA uses symbols
15012: or "symbs"X<symb>. These identifiers are built from the URL of the
15013: map, the resource number of the resource in the map, and the URL of
15014: the resource itself. The latter is somewhat redundant, but might help
15015: if maps change.
15016:
15017: An example is
15018:
15019: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
15020:
15021: The respective map entry is
15022:
15023: <resource id="19" src="/res/msu/korte/tests/part12.problem"
15024: title="Problem 2">
15025: </resource>
15026:
15027: Symbs are used by the random number generator, as well as to store and
15028: restore data specific to a certain instance of for example a problem.
15029:
15030: =head2 Storing And Retrieving Data
15031:
15032: X<store()>X<cstore()>X<restore()>Three of the most important functions
15033: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
15034: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
15035: is is the non-critical message twin of cstore. These functions are for
15036: handlers to store a perl hash to a user's permanent data space in an
15037: easy manner, and to retrieve it again on another call. It is expected
15038: that a handler would use this once at the beginning to retrieve data,
15039: and then again once at the end to send only the new data back.
15040:
15041: The data is stored in the user's data directory on the user's
15042: homeserver under the ID of the course.
15043:
15044: The hash that is returned by restore will have all of the previous
15045: value for all of the elements of the hash.
15046:
15047: Example:
15048:
15049: #creating a hash
15050: my %hash;
15051: $hash{'foo'}='bar';
15052:
15053: #storing it
15054: &Apache::lonnet::cstore(\%hash);
15055:
15056: #changing a value
15057: $hash{'foo'}='notbar';
15058:
15059: #adding a new value
15060: $hash{'bar'}='foo';
15061: &Apache::lonnet::cstore(\%hash);
15062:
15063: #retrieving the hash
15064: my %history=&Apache::lonnet::restore();
15065:
15066: #print the hash
15067: foreach my $key (sort(keys(%history))) {
15068: print("\%history{$key} = $history{$key}");
15069: }
15070:
15071: Will print out:
15072:
15073: %history{1:foo} = bar
15074: %history{1:keys} = foo:timestamp
15075: %history{1:timestamp} = 990455579
15076: %history{2:bar} = foo
15077: %history{2:foo} = notbar
15078: %history{2:keys} = foo:bar:timestamp
15079: %history{2:timestamp} = 990455580
15080: %history{bar} = foo
15081: %history{foo} = notbar
15082: %history{timestamp} = 990455580
15083: %history{version} = 2
15084:
15085: Note that the special hash entries C<keys>, C<version> and
15086: C<timestamp> were added to the hash. C<version> will be equal to the
15087: total number of versions of the data that have been stored. The
15088: C<timestamp> attribute will be the UNIX time the hash was
15089: stored. C<keys> is available in every historical section to list which
15090: keys were added or changed at a specific historical revision of a
15091: hash.
15092:
15093: B<Warning>: do not store the hash that restore returns directly. This
15094: will cause a mess since it will restore the historical keys as if the
15095: were new keys. I.E. 1:foo will become 1:1:foo etc.
15096:
15097: Calling convention:
15098:
15099: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
15100: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$laststore);
15101:
15102: For more detailed information, see lonnet specific documentation.
15103:
15104: =head1 RETURN MESSAGES
15105:
15106: =over 4
15107:
15108: =item * B<con_lost>: unable to contact remote host
15109:
15110: =item * B<con_delayed>: unable to contact remote host, message will be delivered
15111: when the connection is brought back up
15112:
15113: =item * B<con_failed>: unable to contact remote host and unable to save message
15114: for later delivery
15115:
15116: =item * B<error:>: an error a occurred, a description of the error follows the :
15117:
15118: =item * B<no_such_host>: unable to fund a host associated with the user/domain
15119: that was requested
15120:
15121: =back
15122:
15123: =head1 PUBLIC SUBROUTINES
15124:
15125: =head2 Session Environment Functions
15126:
15127: =over 4
15128:
15129: =item *
15130: X<appenv()>
15131: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
15132: the user envirnoment file, and will be restored for each access this
15133: user makes during this session, also modifies the %env for the current
15134: process. Optional rolesarrayref - if defined contains a reference to an array
15135: of roles which are exempt from the restriction on modifying user.role entries
15136: in the user's environment.db and in %env.
15137:
15138: =item *
15139: X<delenv()>
15140: B<delenv($delthis,$regexp)>: removes all items from the session
15141: environment file that begin with $delthis. If the
15142: optional second arg - $regexp - is true, $delthis is treated as a
15143: regular expression, otherwise \Q$delthis\E is used.
15144: The values are also deleted from the current processes %env.
15145:
15146: =item * get_env_multiple($name)
15147:
15148: gets $name from the %env hash, it seemlessly handles the cases where multiple
15149: values may be defined and end up as an array ref.
15150:
15151: returns an array of values
15152:
15153: =back
15154:
15155: =head2 User Information
15156:
15157: =over 4
15158:
15159: =item *
15160: X<queryauthenticate()>
15161: B<queryauthenticate($uname,$udom)>: try to determine user's current
15162: authentication scheme
15163:
15164: =item *
15165: X<authenticate()>
15166: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
15167: authenticate user from domain's lib servers (first use the current
15168: one). C<$upass> should be the users password.
15169: $checkdefauth is optional (value is 1 if a check should be made to
15170: authenticate user using default authentication method, and allow
15171: account creation if username does not have account in the domain).
15172: $clientcancheckhost is optional (value is 1 if checking whether the
15173: server can host will occur on the client side in lonauth.pm).
15174:
15175: =item *
15176: X<homeserver()>
15177: B<homeserver($uname,$udom)>: find the server which has
15178: the user's directory and files (there must be only one), this caches
15179: the answer, and also caches if there is a borken connection.
15180:
15181: =item *
15182: X<idget()>
15183: B<idget($udom,$idsref,$namespace)>: find the usernames behind either
15184: a list of student/employee IDs or clicker IDs
15185: (student/employee IDs are a unique resource in a domain, there must be
15186: only 1 ID per username, and only 1 username per ID in a specific domain).
15187: clickerIDs are not necessarily unique, as students might share clickers.
15188: (returns hash: id=>name,id=>name)
15189:
15190: =item *
15191: X<idrget()>
15192: B<idrget($udom,@unames)>: find the IDs behind a list of
15193: usernames (returns hash: name=>id,name=>id)
15194:
15195: =item *
15196: X<idput()>
15197: B<idput($udom,$idsref,$uhome,$namespace)>: store away a list of
15198: names and associated student/employee IDs or clicker IDs.
15199:
15200: =item *
15201: X<iddel()>
15202: B<iddel($udom,$idshashref,$uhome,$namespace)>: delete unwanted
15203: student/employee ID or clicker ID username look-ups from domain.
15204: The homeserver ($uhome) and namespace ($namespace) are optional.
15205: If no $uhome is provided, it will be determined usig &homeserver()
15206: for each user. If no $namespace is provided, the default is ids.
15207:
15208: =item *
15209: X<updateclickers()>
15210: B<updateclickers($udom,$action,$idshashref,$uhome,$critical)>: update
15211: clicker ID-to-username look-ups in clickers.db on library server.
15212: Permitted actions are add or del (i.e., add or delete). The
15213: clickers.db contains clickerID as keys (escaped), and each corresponding
15214: value is an escaped comma-separated list of usernames (for whom the
15215: library server is the homeserver), who registered that particular ID.
15216: If $critical is true, the update will be sent via &critical, otherwise
15217: &reply() will be used.
15218:
15219: =item *
15220: X<rolesinit()>
15221: B<rolesinit($udom,$username)>: get user privileges.
15222: returns user role, first access and timer interval hashes
15223:
15224: =item *
15225: X<privileged()>
15226: B<privileged($username,$domain)>: returns a true if user has a
15227: privileged and active role (i.e. su or dc), false otherwise.
15228:
15229: =item *
15230: X<getsection()>
15231: B<getsection($udom,$uname,$cname)>: finds the section of student in the
15232: course $cname, return section name/number or '' for "not in course"
15233: and '-1' for "no section"
15234:
15235: =item *
15236: X<userenvironment()>
15237: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
15238: passed in @what from the requested user's environment, returns a hash
15239:
15240: =item *
15241: X<userlog_query()>
15242: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
15243: activity.log file. %filters defines filters applied when parsing the
15244: log file. These can be start or end timestamps, or the type of action
15245: - log to look for Login or Logout events, check for Checkin or
15246: Checkout, role for role selection. The response is in the form
15247: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
15248: escaped strings of the action recorded in the activity.log file.
15249:
15250: =back
15251:
15252: =head2 User Roles
15253:
15254: =over 4
15255:
15256: =item *
15257:
15258: allowed($priv,$uri,$symb,$role,$clientip,$noblockcheck) : check for a user privilege;
15259: returns codes for allowed actions.
15260:
15261: The first argument is required, all others are optional.
15262:
15263: $priv is the privilege being checked.
15264: $uri contains additional information about what is being checked for access (e.g.,
15265: URL, course ID etc.).
15266: $symb is the unique resource instance identifier in a course; if needed,
15267: but not provided, it will be retrieved via a call to &symbread().
15268: $role is the role for which a priv is being checked (only used if priv is evb).
15269: $clientip is the user's IP address (only used when checking for access to portfolio
15270: files).
15271: $noblockcheck, if true, skips calls to &has_comm_blocking() for the bre priv. This
15272: prevents recursive calls to &allowed.
15273:
15274: F: full access
15275: U,I,K: authentication modes (cxx only)
15276: '': forbidden
15277: 1: user needs to choose course
15278: 2: browse allowed
15279: A: passphrase authentication needed
15280: B: access temporarily blocked because of a blocking event in a course.
15281: D: access blocked because access is required via session initiated via deep-link
15282:
15283: =item *
15284:
15285: constructaccess($url,$setpriv) : check for access to construction space URL
15286:
15287: See if the owner domain and name in the URL match those in the
15288: expected environment. If so, return three element list
15289: ($ownername,$ownerdomain,$ownerhome).
15290:
15291: Otherwise return the null string.
15292:
15293: If second argument 'setpriv' is true, it assigns the privileges,
15294: and returns the same three element list, unless the owner has
15295: blocked "ad hoc" Domain Coordinator access to the Author Space,
15296: in which case the null string is returned.
15297:
15298: =item *
15299:
15300: definerole($rolename,$sysrole,$domrole,$courole,$uname,$udom) : define role;
15301: define a custom role rolename set privileges in format of lonTabs/roles.tab
15302: for system, domain, and course level. $uname and $udom are optional (current
15303: user's username and domain will be used when either of $uname or $udom are absent.
15304:
15305: =item *
15306:
15307: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
15308: (rolesplain.tab); plain text explanation of a user role term.
15309: $type is Course (default) or Community.
15310: If $forcedefault evaluates to true, text returned will be default
15311: text for $type. Otherwise, if this is a course, the text returned
15312: will be a custom name for the role (if defined in the course's
15313: environment). If no custom name is defined the default is returned.
15314:
15315: =item *
15316:
15317: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
15318: All arguments are optional. Returns a hash of a roles, either for
15319: co-author/assistant author roles for a user's Construction Space
15320: (default), or if $context is 'userroles', roles for the user himself,
15321: In the hash, keys are set to colon-separated $uname,$udom,$role, and
15322: (optionally) if $withsec is true, a fourth colon-separated item - $section.
15323: For each key, value is set to colon-separated start and end times for
15324: the role. If no username and domain are specified, will default to
15325: current user/domain. Types, roles, and roledoms are references to arrays
15326: of role statuses (active, future or previous), roles
15327: (e.g., cc,in, st etc.) and domains of the roles which can be used
15328: to restrict the list of roles reported. If no array ref is
15329: provided for types, will default to return only active roles.
15330:
15331: =item *
15332:
15333: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
15334: user: $uname:$udom has a role in the course: $cdom_$cnum.
15335:
15336: Additional optional arguments are: $type (if role checking is to be restricted
15337: to certain user status types -- previous (expired roles), active (currently
15338: available roles) or future (roles available in the future), and
15339: $hideprivileged -- if true will not report course roles for users who
15340: have active Domain Coordinator role in course's domain or in additional
15341: domains (specified in 'Domains to check for privileged users' in course
15342: environment -- set via: Course Settings -> Classlists and staff listing).
15343:
15344: =item *
15345:
15346: privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
15347: $username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
15348: $possdomains and $possroles are optional array refs -- to domains to check and
15349: roles to check. If $possdomains is not specified, a dump will be done of the
15350: users' roles.db to check for a dc or su role in any domain. This can be
15351: time consuming if &privileged is called repeatedly (e.g., when displaying a
15352: classlist), so in such cases, supplying a $possdomains array is preferred, as
15353: this then allows &privileged_by_domain() to be used, which caches the identity
15354: of privileged users, eliminating the need for repeated calls to &dump().
15355:
15356: =item *
15357:
15358: privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
15359: where the outer hash keys are domains specified in the $possdomains array ref,
15360: next inner hash keys are privileged roles specified in the $roles array ref,
15361: and the innermost hash contains key = value pairs for username:domain = end:start
15362: for active or future "privileged" users with that role in that domain. To avoid
15363: repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
15364: innerhash are cached using priv_$role and $dom as the identifiers.
15365:
15366: =back
15367:
15368: =head2 User Modification
15369:
15370: =over 4
15371:
15372: =item *
15373:
15374: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
15375: user for the level given by URL. Optional start and end dates (leave empty
15376: string or zero for "no date")
15377:
15378: =item *
15379:
15380: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
15381: change a users, password, possible return values are: ok,
15382: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
15383: refused
15384:
15385: =item *
15386:
15387: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
15388:
15389: =item *
15390:
15391: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
15392: $forceid,$desiredhome,$email,$inststatus,$candelete) :
15393:
15394: will update user information (firstname,middlename,lastname,generation,
15395: permanentemail), and if forceid is true, student/employee ID also.
15396: A user's institutional affiliation(s) can also be updated.
15397: User information fields will not be overwritten with empty entries
15398: unless the field is included in the $candelete array reference.
15399: This array is included when a single user is modified via "Manage Users",
15400: or when Autoupdate.pl is run by cron in a domain.
15401:
15402: =item *
15403:
15404: modifystudent
15405:
15406: modify a student's enrollment and identification information.
15407: The course id is resolved based on the current user's environment.
15408: This means the invoking user must be a course coordinator or otherwise
15409: associated with a course.
15410:
15411: This call is essentially a wrapper for lonnet::modifyuser and
15412: lonnet::modify_student_enrollment
15413:
15414: Inputs:
15415:
15416: =over 4
15417:
15418: =item B<$udom> Student's loncapa domain
15419:
15420: =item B<$uname> Student's loncapa login name
15421:
15422: =item B<$uid> Student/Employee ID
15423:
15424: =item B<$umode> Student's authentication mode
15425:
15426: =item B<$upass> Student's password
15427:
15428: =item B<$first> Student's first name
15429:
15430: =item B<$middle> Student's middle name
15431:
15432: =item B<$last> Student's last name
15433:
15434: =item B<$gene> Student's generation
15435:
15436: =item B<$usec> Student's section in course
15437:
15438: =item B<$end> Unix time of the roles expiration
15439:
15440: =item B<$start> Unix time of the roles start date
15441:
15442: =item B<$forceid> If defined, allow $uid to be changed
15443:
15444: =item B<$desiredhome> server to use as home server for student
15445:
15446: =item B<$email> Student's permanent e-mail address
15447:
15448: =item B<$type> Type of enrollment (auto or manual)
15449:
15450: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
15451:
15452: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
15453:
15454: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
15455:
15456: =item B<$context> role change context (shown in User Management Logs display in a course)
15457:
15458: =item B<$inststatus> institutional status of user - : separated string of escaped status types
15459:
15460: =item B<$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.
15461:
15462: =back
15463:
15464: =item *
15465:
15466: modify_student_enrollment
15467:
15468: Change a student's enrollment status in a class. The environment variable
15469: 'role.request.course' must be defined for this function to proceed.
15470:
15471: Inputs:
15472:
15473: =over 4
15474:
15475: =item $udom, student's domain
15476:
15477: =item $uname, student's name
15478:
15479: =item $uid, student's user id
15480:
15481: =item $first, student's first name
15482:
15483: =item $middle
15484:
15485: =item $last
15486:
15487: =item $gene
15488:
15489: =item $usec
15490:
15491: =item $end
15492:
15493: =item $start
15494:
15495: =item $type
15496:
15497: =item $locktype
15498:
15499: =item $cid
15500:
15501: =item $selfenroll
15502:
15503: =item $context
15504:
15505: =item $credits, number of credits student will earn from this class
15506:
15507: =item $instsec, institutional course section code for student
15508:
15509: =back
15510:
15511:
15512: =item *
15513:
15514: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
15515: custom role; give a custom role to a user for the level given by URL. Specify
15516: name and domain of role author, and role name
15517:
15518: =item *
15519:
15520: revokerole($udom,$uname,$url,$role) : revoke a role for url
15521:
15522: =item *
15523:
15524: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
15525:
15526: =back
15527:
15528: =head2 Course Infomation
15529:
15530: =over 4
15531:
15532: =item *
15533:
15534: coursedescription($courseid,$options) : returns a hash of information about the
15535: specified course id, including all environment settings for the
15536: course, the description of the course will be in the hash under the
15537: key 'description'
15538:
15539: $options is an optional parameter that if supplied is a hash reference that controls
15540: what how this function works. It has the following key/values:
15541:
15542: =over 4
15543:
15544: =item freshen_cache
15545:
15546: If defined, and the environment cache for the course is valid, it is
15547: returned in the returned hash.
15548:
15549: =item one_time
15550:
15551: If defined, the last cache time is set to _now_
15552:
15553: =item user
15554:
15555: If defined, the supplied username is used instead of the current user.
15556:
15557:
15558: =back
15559:
15560: =item *
15561:
15562: resdata($name,$domain,$type,@which) : request for current parameter
15563: setting for a specific $type, where $type is either 'course' or 'user',
15564: @what should be a list of parameters to ask about. This routine caches
15565: answers for 10 minutes.
15566:
15567: =item *
15568:
15569: get_courseresdata($courseid, $domain) : dump the entire course resource
15570: data base, returning a hash that is keyed by the resource name and has
15571: values that are the resource value. I believe that the timestamps and
15572: versions are also returned.
15573:
15574: get_numsuppfiles($cnum,$cdom) : retrieve number of files in a course's
15575: supplemental content area. This routine caches the number of files for
15576: 10 minutes.
15577:
15578: =back
15579:
15580: =head2 Course Modification
15581:
15582: =over 4
15583:
15584: =item *
15585:
15586: writecoursepref($courseid,%prefs) : write preferences (environment
15587: database) for a course
15588:
15589: =item *
15590:
15591: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
15592:
15593: =item *
15594:
15595: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
15596:
15597: =item *
15598:
15599: is_course($courseid), is_course($cdom, $cnum)
15600:
15601: Accepts either a combined $courseid (in the form of domain_courseid) or the
15602: two component version $cdom, $cnum. It checks if the specified course exists.
15603:
15604: Returns:
15605: undef if the course doesn't exist, otherwise
15606: in scalar context the combined courseid.
15607: in list context the two components of the course identifier, domain and
15608: courseid.
15609:
15610: =back
15611:
15612: =head2 Bubblesheet Configuration
15613:
15614: =over 4
15615:
15616: =item *
15617:
15618: get_scantron_config($which)
15619:
15620: $which - the name of the configuration to parse from the file.
15621:
15622: Parses and returns the bubblesheet configuration line selected as a
15623: hash of configuration file fields.
15624:
15625:
15626: Returns:
15627: If the named configuration is not in the file, an empty
15628: hash is returned.
15629:
15630: a hash with the fields
15631: name - internal name for the this configuration setup
15632: description - text to display to operator that describes this config
15633: CODElocation - if 0 or the string 'none'
15634: - no CODE exists for this config
15635: if -1 || the string 'letter'
15636: - a CODE exists for this config and is
15637: a string of letters
15638: Unsupported value (but planned for future support)
15639: if a positive integer
15640: - The CODE exists as the first n items from
15641: the question section of the form
15642: if the string 'number'
15643: - The CODE exists for this config and is
15644: a string of numbers
15645: CODEstart - (only matter if a CODE exists) column in the line where
15646: the CODE starts
15647: CODElength - length of the CODE
15648: IDstart - column where the student/employee ID starts
15649: IDlength - length of the student/employee ID info
15650: Qstart - column where the information from the bubbled
15651: 'questions' start
15652: Qlength - number of columns comprising a single bubble line from
15653: the sheet. (usually either 1 or 10)
15654: Qon - either a single character representing the character used
15655: to signal a bubble was chosen in the positional setup, or
15656: the string 'letter' if the letter of the chosen bubble is
15657: in the final, or 'number' if a number representing the
15658: chosen bubble is in the file (1->A 0->J)
15659: Qoff - the character used to represent that a bubble was
15660: left blank
15661: PaperID - if the scanning process generates a unique number for each
15662: sheet scanned the column that this ID number starts in
15663: PaperIDlength - number of columns that comprise the unique ID number
15664: for the sheet of paper
15665: FirstName - column that the first name starts in
15666: FirstNameLength - number of columns that the first name spans
15667: LastName - column that the last name starts in
15668: LastNameLength - number of columns that the last name spans
15669: BubblesPerRow - number of bubbles available in each row used to
15670: bubble an answer. (If not specified, 10 assumed).
15671:
15672:
15673: =item *
15674:
15675: get_scantronformat_file($cdom)
15676:
15677: $cdom - the course's domain (optional); if not supplied, uses
15678: domain for current $env{'request.course.id'}.
15679:
15680: Returns an array containing lines from the scantron format file for
15681: the domain of the course.
15682:
15683: If a url for a custom.tab file is listed in domain's configuration.db,
15684: lines are from this file.
15685:
15686: Otherwise, if a default.tab has been published in RES space by the
15687: domainconfig user, lines are from this file.
15688:
15689: Otherwise, fall back to getting lines from the legacy file on the
15690: local server: /home/httpd/lonTabs/default_scantronformat.tab
15691:
15692: =back
15693:
15694: =head2 Resource Subroutines
15695:
15696: =over 4
15697:
15698: =item *
15699:
15700: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
15701:
15702: =item *
15703:
15704: repcopy($filename) : subscribes to the requested file, and attempts to
15705: replicate from the owning library server, Might return
15706: 'unavailable', 'not_found', 'forbidden', 'ok', or
15707: 'bad_request', also attempts to grab the metadata for the
15708: resource. Expects the local filesystem pathname
15709: (/home/httpd/html/res/....)
15710:
15711: =back
15712:
15713: =head2 Resource Information
15714:
15715: =over 4
15716:
15717: =item *
15718:
15719: EXT($varname,$symb,$udom,$uname,$usection,$recurse,$cid) : evaluates
15720: and returns the value of a variety of different possible values,
15721: $varname should be a request string, and the other parameters can be
15722: used to specify who and what one is asking about. Ordinarily, $cid
15723: does not need to be specified, as it is retrived from
15724: $env{'request.course.id'}, but &Apache::lonnet::EXT() is called
15725: within lonuserstate::loadmap() when initializing a course, before
15726: $env{'request.course.id'} has been set, so it needs to be provided
15727: in that one case.
15728:
15729: Possible values for $varname are environment.lastname (or other item
15730: from the envirnment hash), user.name (or someother aspect about the
15731: user), resource.0.maxtries (or some other part and parameter of a
15732: resource)
15733:
15734: =item *
15735:
15736: directcondval($number) : get current value of a condition; reads from a state
15737: string
15738:
15739: =item *
15740:
15741: condval($condidx) : value of condition index based on state
15742:
15743: =item *
15744:
15745: metadata($uri,$what,$toolsymb,$liburi,$prefix,$depthcount) : request a
15746: resource's metadata, $what should be either a specific key, or either
15747: 'keys' (to get a list of possible keys) or 'packages' to get a list of
15748: packages that this resource currently uses, the last 3 arguments are
15749: only used internally for recursive metadata.
15750:
15751: the toolsymb is only used where the uri is for an external tool (for which
15752: the uri as well as the symb are guaranteed to be unique).
15753:
15754: this function automatically caches all requests except any made recursively
15755: to retrieve a list of metadata keys for an imported library file ($liburi is
15756: defined).
15757:
15758: =item *
15759:
15760: metadata_query($query,$custom,$customshow) : make a metadata query against the
15761: network of library servers; returns file handle of where SQL and regex results
15762: will be stored for query
15763:
15764: =item *
15765:
15766: symbread($filename,$donotrecurse,$ignorecachednull,$checkforblock,$possibles) :
15767: return symbolic list entry (all arguments optional).
15768:
15769: Args: filename is the filename (including path) for the file for which a symb
15770: is required; donotrecurse, if true will prevent calls to allowed() being made
15771: to check access status if more than one resource was found in the bighash
15772: (see rev. 1.249) to avoid an infinite loop if an ambiguous resource is part of
15773: a randompick); ignorecachednull, if true will prevent a symb of '' being
15774: returned if $env{$cache_str} is defined as ''; checkforblock if true will
15775: cause possible symbs to be checked to determine if they are subject to content
15776: blocking, if so they will not be included as possible symbs; possibles is a
15777: ref to a hash, which, as a side effect, will be populated with all possible
15778: symbs (content blocking not tested).
15779:
15780: returns the data handle
15781:
15782: =item *
15783:
15784: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
15785: and is a possible symb for the URL in $thisfn, and if is an encrypted
15786: resource that the user accessed using /enc/ returns a 1 on success, 0
15787: on failure, user must be in a course, as it assumes the existence of
15788: the course initial hash, and uses $env('request.course.id'}. The third
15789: arg is an optional reference to a scalar. If this arg is passed in the
15790: call to symbverify, it will be set to 1 if the symb has been set to be
15791: encrypted; otherwise it will be null.
15792:
15793: =item *
15794:
15795: symbclean($symb) : removes versions numbers from a symb, returns the
15796: cleaned symb
15797:
15798: =item *
15799:
15800: is_on_map($uri) : checks if the $uri is somewhere on the current
15801: course map, user must be in a course for it to work.
15802:
15803: =item *
15804:
15805: numval($salt) : return random seed value (addend for rndseed)
15806:
15807: =item *
15808:
15809: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
15810: a random seed, all arguments are optional, if they aren't sent it uses the
15811: environment to derive them. Note: if symb isn't sent and it can't get one
15812: from &symbread it will use the current time as its return value
15813:
15814: =item *
15815:
15816: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
15817: unfakeable, receipt
15818:
15819: =item *
15820:
15821: receipt() : API to ireceipt working off of env values; given out to users
15822:
15823: =item *
15824:
15825: countacc($url) : count the number of accesses to a given URL
15826:
15827: =item *
15828:
15829: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
15830:
15831: =item *
15832:
15833: checkin($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 $tcrsid)
15834:
15835: =item *
15836:
15837: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
15838:
15839: =item *
15840:
15841: devalidate($symb) : devalidate temporary spreadsheet calculations,
15842: forcing spreadsheet to reevaluate the resource scores next time.
15843:
15844: =item *
15845:
15846: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
15847: when viewing in course context.
15848:
15849: input: six args -- filename (decluttered), course number, course domain,
15850: url, symb (if registered) and group (if this is a
15851: group item -- e.g., bulletin board, group page etc.).
15852:
15853: output: array of five scalars --
15854: $cfile -- url for file editing if editable on current server
15855: $home -- homeserver of resource (i.e., for author if published,
15856: or course if uploaded.).
15857: $switchserver -- 1 if server switch will be needed.
15858: $forceedit -- 1 if icon/link should be to go to edit mode
15859: $forceview -- 1 if icon/link should be to go to view mode
15860:
15861: =item *
15862:
15863: is_course_upload($file,$cnum,$cdom)
15864:
15865: Used in course context to determine if current file was uploaded to
15866: the course (i.e., would be found in /userfiles/docs on the course's
15867: homeserver.
15868:
15869: input: 3 args -- filename (decluttered), course number and course domain.
15870: output: boolean -- 1 if file was uploaded.
15871:
15872: =back
15873:
15874: =head2 Storing/Retreiving Data
15875:
15876: =over 4
15877:
15878: =item *
15879:
15880: store($storehash,$symb,$namespace,$udom,$uname,$laststore) : stores hash
15881: permanently for this url; hashref needs to be given and should be a \%hashname;
15882: the remaining args aren't required and if they aren't passed or are '' they will
15883: be derived from the env (with the exception of $laststore, which is an
15884: optional arg used when a user's submission is stored in grading).
15885: $laststore is $version=$timestamp, where $version is the most recent version
15886: number retrieved for the corresponding $symb in the $namespace db file, and
15887: $timestamp is the timestamp for that transaction (UNIX time).
15888: $laststore is currently only passed when cstore() is called by
15889: structuretags::finalize_storage().
15890:
15891: =item *
15892:
15893: cstore($storehash,$symb,$namespace,$udom,$uname,$laststore) : same as store
15894: but uses critical subroutine
15895:
15896: =item *
15897:
15898: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
15899: all args are optional
15900:
15901: =item *
15902:
15903: dumpstore($namespace,$udom,$uname,$regexp,$range) :
15904: dumps the complete (or key matching regexp) namespace into a hash
15905: ($udom, $uname, $regexp, $range are optional) for a namespace that is
15906: normally &store()ed into
15907:
15908: $range should be either an integer '100' (give me the first 100
15909: matching records)
15910: or be two integers sperated by a - with no spaces
15911: '30-50' (give me the 30th through the 50th matching
15912: records)
15913:
15914:
15915: =item *
15916:
15917: putstore($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog) :
15918: replaces a &store() version of data with a replacement set of data
15919: for a particular resource in a namespace passed in the $storehash hash
15920: reference. If $tolog is true, the transaction is logged in the courselog
15921: with an action=PUTSTORE.
15922:
15923: =item *
15924:
15925: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
15926: works very similar to store/cstore, but all data is stored in a
15927: temporary location and can be reset using tmpreset, $storehash should
15928: be a hash reference, returns nothing on success
15929:
15930: =item *
15931:
15932: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
15933: similar to restore, but all data is stored in a temporary location and
15934: can be reset using tmpreset. Returns a hash of values on success,
15935: error string otherwise.
15936:
15937: =item *
15938:
15939: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
15940: deltes all keys for $symb form the temporary storage hash.
15941:
15942: =item *
15943:
15944: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
15945: reference filled in from namesp ($udom and $uname are optional)
15946:
15947: =item *
15948:
15949: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
15950: namesp ($udom and $uname are optional)
15951:
15952: =item *
15953:
15954: dump($namespace,$udom,$uname,$regexp,$range) :
15955: dumps the complete (or key matching regexp) namespace into a hash
15956: ($udom, $uname, $regexp, $range are optional)
15957:
15958: $range should be either an integer '100' (give me the first 100
15959: matching records)
15960: or be two integers sperated by a - with no spaces
15961: '30-50' (give me the 30th through the 50th matching
15962: records)
15963: =item *
15964:
15965: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
15966: $store can be a scalar, an array reference, or if the amount to be
15967: incremented is > 1, a hash reference.
15968:
15969: ($udom and $uname are optional)
15970:
15971: =item *
15972:
15973: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
15974: ($udom and $uname are optional)
15975:
15976: =item *
15977:
15978: cput($namespace,$storehash,$udom,$uname) : critical put
15979: ($udom and $uname are optional)
15980:
15981: =item *
15982:
15983: newput($namespace,$storehash,$udom,$uname) :
15984:
15985: Attempts to store the items in the $storehash, but only if they don't
15986: currently exist, if this succeeds you can be certain that you have
15987: successfully created a new key value pair in the $namespace db.
15988:
15989:
15990: Args:
15991: $namespace: name of database to store values to
15992: $storehash: hashref to store to the db
15993: $udom: (optional) domain of user containing the db
15994: $uname: (optional) name of user caontaining the db
15995:
15996: Returns:
15997: 'ok' -> succeeded in storing all keys of $storehash
15998: 'key_exists: <key>' -> failed to anything out of $storehash, as at
15999: least <key> already existed in the db (other
16000: requested keys may also already exist)
16001: 'error: <msg>' -> unable to tie the DB or other error occurred
16002: 'con_lost' -> unable to contact request server
16003: 'refused' -> action was not allowed by remote machine
16004:
16005:
16006: =item *
16007:
16008: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
16009: reference filled in from namesp (encrypts the return communication)
16010: ($udom and $uname are optional)
16011:
16012: =item *
16013:
16014: log($udom,$name,$home,$message) : write to permanent log for user; use
16015: critical subroutine
16016:
16017: =item *
16018:
16019: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
16020: array reference filled in from namespace found in domain level on either
16021: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
16022:
16023: =item *
16024:
16025: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
16026: domain level either on specified domain server ($uhome) or primary domain
16027: server ($udom and $uhome are optional)
16028:
16029: =item *
16030:
16031: get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults
16032: for: authentication, language, quotas, timezone, date locale, and portal URL in
16033: the target domain.
16034:
16035: May also include additional key => value pairs for the following groups:
16036:
16037: =over
16038:
16039: =item
16040: disk quotas (MB allocated by default to portfolios and authoring spaces).
16041:
16042: =over
16043:
16044: =item defaultquota, authorquota
16045:
16046: =back
16047:
16048: =item
16049: tools (availability of aboutme page, blog, webDAV access for authoring spaces,
16050: portfolio for users).
16051:
16052: =over
16053:
16054: =item
16055: aboutme, blog, webdav, portfolio
16056:
16057: =back
16058:
16059: =item
16060: requestcourses: ability to request courses, and how requests are processed.
16061:
16062: =over
16063:
16064: =item
16065: official, unofficial, community, textbook, placement
16066:
16067: =back
16068:
16069: =item
16070: inststatus: types of institutional affiliation, and order in which they are displayed.
16071:
16072: =over
16073:
16074: =item
16075: inststatustypes, inststatusorder, inststatusguest
16076:
16077: =back
16078:
16079: =item
16080: coursedefaults: can PDF forms can be created, default credits for courses, default quotas (MB)
16081: for course's uploaded content.
16082:
16083: =over
16084:
16085: =item
16086: canuse_pdfforms, officialcredits, unofficialcredits, textbookcredits, officialquota, unofficialquota,
16087: communityquota, textbookquota, placementquota
16088:
16089: =back
16090:
16091: =item
16092: usersessions: set options for hosting of your users in other domains, and hosting of users from other domains
16093: on your servers.
16094:
16095: =over
16096:
16097: =item
16098: remotesessions, hostedsessions
16099:
16100: =back
16101:
16102: =back
16103:
16104: In cases where a domain coordinator has never used the "Set Domain Configuration"
16105: utility to create a configuration.db file on a domain's primary library server
16106: only the following domain defaults: auth_def, auth_arg_def, lang_def
16107: -- corresponding values are authentication type (internal, krb4, krb5,
16108: or localauth), initial password or a kerberos realm, language (e.g., en-us) --
16109: will be available. Values are retrieved from cache (if current), unless the
16110: optional $ignore_cache arg is true, or from domain's configuration.db (if available),
16111: or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab.
16112:
16113: Typical usage:
16114:
16115: %domdefaults = &get_domain_defaults($target_domain);
16116:
16117: =back
16118:
16119: =head2 Network Status Functions
16120:
16121: =over 4
16122:
16123: =item *
16124:
16125: dirlist() : return directory list based on URI (first arg).
16126:
16127: Inputs: 1 required, 5 optional.
16128:
16129: =over
16130:
16131: =item
16132: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
16133:
16134: =item
16135: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
16136:
16137: =item
16138: $username - username of user/course to be listed. Extracted from $uri if absent.
16139:
16140: =item
16141: $getpropath - boolean: 1 if prepend path using &propath().
16142:
16143: =item
16144: $getuserdir - boolean: 1 if prepend path for "userfiles".
16145:
16146: =item
16147: $alternateRoot - path to prepend in place of path from $uri.
16148:
16149: =back
16150:
16151: Returns: Array of up to two items.
16152:
16153: =over
16154:
16155: a reference to an array of files/subdirectories
16156:
16157: =over
16158:
16159: Each element in the array of files/subdirectories is a & separated list of
16160: item name and the result of running stat on the item. If dirlist was requested
16161: for a file instead of a directory, the item name will be ''. For a directory
16162: listing, if the item is a metadata file, the element will end &N&M
16163: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
16164: default copyright set (1).
16165:
16166: =back
16167:
16168: a scalar containing error condition (if encountered).
16169:
16170: =over
16171:
16172: =item
16173: no_host (no homeserver identified for $username:$domain).
16174:
16175: =item
16176: no_such_host (server contacted for listing not identified as valid host).
16177:
16178: =item
16179: con_lost (connection to remote server failed).
16180:
16181: =item
16182: refused (invalid $username:$domain received on lond side).
16183:
16184: =item
16185: no_such_dir (directory at specified path on lond side does not exist).
16186:
16187: =item
16188: empty (directory at specified path on lond side is empty).
16189:
16190: =over
16191:
16192: This is currently not encountered because the &ls3, &ls2,
16193: &ls (_handler) routines on the lond side do not filter out
16194: . and .. from a directory listing.
16195:
16196: =back
16197:
16198: =back
16199:
16200: =back
16201:
16202: =item *
16203:
16204: spareserver() : find server with least workload from spare.tab
16205:
16206:
16207: =item *
16208:
16209: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
16210: if there is no corresponding loncapa host.
16211:
16212: =back
16213:
16214:
16215: =head2 Apache Request
16216:
16217: =over 4
16218:
16219: =item *
16220:
16221: ssi($url,%hash) : server side include, does a complete request cycle on url to
16222: localhost, posts hash
16223:
16224: =back
16225:
16226: =head2 Data to String to Data
16227:
16228: =over 4
16229:
16230: =item *
16231:
16232: hash2str(%hash) : convert a hash into a string complete with escaping and '='
16233: and '&' separators, supports elements that are arrayrefs and hashrefs
16234:
16235: =item *
16236:
16237: hashref2str($hashref) : convert a hashref into a string complete with
16238: escaping and '=' and '&' separators, supports elements that are
16239: arrayrefs and hashrefs
16240:
16241: =item *
16242:
16243: arrayref2str($arrayref) : convert an arrayref into a string complete
16244: with escaping and '&' separators, supports elements that are arrayrefs
16245: and hashrefs
16246:
16247: =item *
16248:
16249: str2hash($string) : convert string to hash using unescaping and
16250: splitting on '=' and '&', supports elements that are arrayrefs and
16251: hashrefs
16252:
16253: =item *
16254:
16255: str2array($string) : convert string to hash using unescaping and
16256: splitting on '&', supports elements that are arrayrefs and hashrefs
16257:
16258: =back
16259:
16260: =head2 Logging Routines
16261:
16262:
16263: These routines allow one to make log messages in the lonnet.log and
16264: lonnet.perm logfiles.
16265:
16266: =over 4
16267:
16268: =item *
16269:
16270: logtouch() : make sure the logfile, lonnet.log, exists
16271:
16272: =item *
16273:
16274: logthis() : append message to the normal lonnet.log file, it gets
16275: preiodically rolled over and deleted.
16276:
16277: =item *
16278:
16279: logperm() : append a permanent message to lonnet.perm.log, this log
16280: file never gets deleted by any automated portion of the system, only
16281: messages of critical importance should go in here.
16282:
16283:
16284: =back
16285:
16286: =head2 General File Helper Routines
16287:
16288: =over 4
16289:
16290: =item *
16291:
16292: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
16293: (a) files in /uploaded
16294: (i) If a local copy of the file exists -
16295: compares modification date of local copy with last-modified date for
16296: definitive version stored on home server for course. If local copy is
16297: stale, requests a new version from the home server and stores it.
16298: If the original has been removed from the home server, then local copy
16299: is unlinked.
16300: (ii) If local copy does not exist -
16301: requests the file from the home server and stores it.
16302:
16303: If $caller is 'uploadrep':
16304: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
16305: for request for files originally uploaded via DOCS.
16306: - returns 'ok' if fresh local copy now available, -1 otherwise.
16307:
16308: Otherwise:
16309: This indicates a call from the content generation phase of the request.
16310: - returns the entire contents of the file or -1.
16311:
16312: (b) files in /res
16313: - returns the entire contents of a file or -1;
16314: it properly subscribes to and replicates the file if neccessary.
16315:
16316:
16317: =item *
16318:
16319: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
16320: reference
16321:
16322: returns either a stat() list of data about the file or an empty list
16323: if the file doesn't exist or couldn't find out about it (connection
16324: problems or user unknown)
16325:
16326: =item *
16327:
16328: filelocation($dir,$file) : returns file system location of a file
16329: based on URI; meant to be "fairly clean" absolute reference, $dir is a
16330: directory that relative $file lookups are to looked in ($dir of /a/dir
16331: and a file of ../bob will become /a/bob)
16332:
16333: =item *
16334:
16335: hreflocation($dir,$file) : returns file system location or a URL; same as
16336: filelocation except for hrefs
16337:
16338: =item *
16339:
16340: declutter() : declutters URLs -- remove beginning slashes, 'res' etc.
16341: also removes beginning /home/httpd/html unless /priv/ follows it.
16342:
16343: =back
16344:
16345: =head2 Usererfile file routines (/uploaded*)
16346:
16347: =over 4
16348:
16349: =item *
16350:
16351: userfileupload(): main rotine for putting a file in a user or course's
16352: filespace, arguments are,
16353:
16354: formname - required - this is the name of the element in $env where the
16355: filename, and the contents of the file to create/modifed exist
16356: the filename is in $env{'form.'.$formname.'.filename'} and the
16357: contents of the file is located in $env{'form.'.$formname}
16358: context - if coursedoc, store the file in the course of the active role
16359: of the current user;
16360: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
16361: if 'canceloverwrite': delete file in tmp/overwrites directory
16362: subdir - required - subdirectory to put the file in under ../userfiles/
16363: if undefined, it will be placed in "unknown"
16364:
16365: (This routine calls clean_filename() to remove any dangerous
16366: characters from the filename, and then calls finuserfileupload() to
16367: complete the transaction)
16368:
16369: returns either the url of the uploaded file (/uploaded/....) if successful
16370: and /adm/notfound.html if unsuccessful
16371:
16372: =item *
16373:
16374: clean_filename(): routine for cleaing a filename up for storage in
16375: userfile space, argument is:
16376:
16377: filename - proposed filename
16378:
16379: returns: the new clean filename
16380:
16381: =item *
16382:
16383: finishuserfileupload(): routine that creates and sends the file to
16384: userspace, probably shouldn't be called directly
16385:
16386: docuname: username or courseid of destination for the file
16387: docudom: domain of user/course of destination for the file
16388: formname: same as for userfileupload()
16389: fname: filename (including subdirectories) for the file
16390: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
16391: if hashref, and context is scantron, will convert csv format to standard format
16392: allfiles: reference to hash used to store objects found by parser
16393: codebase: reference to hash used for codebases of java objects found by parser
16394: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
16395: thumbheight: height (pixels) of thumbnail to be created for uploaded image
16396: resizewidth: width to be used to resize image using resizeImage from ImageMagick
16397: resizeheight: height to be used to resize image using resizeImage from ImageMagick
16398: context: if 'overwrite', will move the uploaded file from its temporary location to
16399: userfiles to facilitate overwriting a previously uploaded file with same name.
16400: mimetype: reference to scalar to accommodate mime type determined
16401: from File::MMagic if $parser = parse.
16402:
16403: returns either the url of the uploaded file (/uploaded/....) if successful
16404: and /adm/notfound.html if unsuccessful (or an error message if context
16405: was 'overwrite').
16406:
16407:
16408: =item *
16409:
16410: renameuserfile(): renames an existing userfile to a new name
16411:
16412: Args:
16413: docuname: username or courseid of destination for the file
16414: docudom: domain of user/course of destination for the file
16415: old: current file name (including any subdirs under userfiles)
16416: new: desired file name (including any subdirs under userfiles)
16417:
16418: =item *
16419:
16420: mkdiruserfile(): creates a directory is a userfiles dir
16421:
16422: Args:
16423: docuname: username or courseid of destination for the file
16424: docudom: domain of user/course of destination for the file
16425: dir: dir to create (including any subdirs under userfiles)
16426:
16427: =item *
16428:
16429: removeuserfile(): removes a file that exists in userfiles
16430:
16431: Args:
16432: docuname: username or courseid of destination for the file
16433: docudom: domain of user/course of destination for the file
16434: fname: filname to delete (including any subdirs under userfiles)
16435:
16436: =item *
16437:
16438: removeuploadedurl(): convience function for removeuserfile()
16439:
16440: Args:
16441: url: a full /uploaded/... url to delete
16442:
16443: =item *
16444:
16445: get_portfile_permissions():
16446: Args:
16447: domain: domain of user or course contain the portfolio files
16448: user: name of user or num of course contain the portfolio files
16449: Returns:
16450: hashref of a dump of the proper file_permissions.db
16451:
16452:
16453: =item *
16454:
16455: get_access_controls():
16456:
16457: Args:
16458: current_permissions: the hash ref returned from get_portfile_permissions()
16459: group: (optional) the group you want the files associated with
16460: file: (optional) the file you want access info on
16461:
16462: Returns:
16463: a hash (keys are file names) of hashes containing
16464: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
16465: values are XML containing access control settings (see below)
16466:
16467: Internal notes:
16468:
16469: access controls are stored in file_permissions.db as key=value pairs.
16470: key -> path to file/file_name\0uniqueID:scope_end_start
16471: where scope -> public,guest,course,group,domains or users.
16472: end -> UNIX time for end of access (0 -> no end date)
16473: start -> UNIX time for start of access
16474:
16475: value -> XML description of access control
16476: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
16477: <start></start>
16478: <end></end>
16479:
16480: <password></password> for scope type = guest
16481:
16482: <domain></domain> for scope type = course or group
16483: <number></number>
16484: <roles id="">
16485: <role></role>
16486: <access></access>
16487: <section></section>
16488: <group></group>
16489: </roles>
16490:
16491: <dom></dom> for scope type = domains
16492:
16493: <users> for scope type = users
16494: <user>
16495: <uname></uname>
16496: <udom></udom>
16497: </user>
16498: </users>
16499: </scope>
16500:
16501: Access data is also aggregated for each file in an additional key=value pair:
16502: key -> path to file/file_name\0accesscontrol
16503: value -> reference to hash
16504: hash contains key = value pairs
16505: where key = uniqueID:scope_end_start
16506: value = UNIX time record was last updated
16507:
16508: Used to improve speed of look-ups of access controls for each file.
16509:
16510: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
16511:
16512: =item *
16513:
16514: modify_access_controls():
16515:
16516: Modifies access controls for a portfolio file
16517: Args
16518: 1. file name
16519: 2. reference to hash of required changes,
16520: 3. domain
16521: 4. username
16522: where domain,username are the domain of the portfolio owner
16523: (either a user or a course)
16524:
16525: Returns:
16526: 1. result of additions or updates ('ok' or 'error', with error message).
16527: 2. result of deletions ('ok' or 'error', with error message).
16528: 3. reference to hash of any new or updated access controls.
16529: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
16530: key = integer (inbound ID)
16531: value = uniqueID
16532:
16533: =item *
16534:
16535: get_timebased_id():
16536:
16537: Attempts to get a unique timestamp-based suffix for use with items added to a
16538: course via the Course Editor (e.g., folders, composite pages,
16539: group bulletin boards).
16540:
16541: Args: (first three required; six others optional)
16542:
16543: 1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
16544: docssequence, or name of group
16545:
16546: 2. keyid (alphanumeric): name of temporary locking key in hash,
16547: e.g., num, boardids
16548:
16549: 3. namespace: name of gdbm file used to store suffixes already assigned;
16550: file will be named nohist_namespace.db
16551:
16552: 4. cdom: domain of course; default is current course domain from %env
16553:
16554: 5. cnum: course number; default is current course number from %env
16555:
16556: 6. idtype: set to concat if an additional digit is to be appended to the
16557: unix timestamp to form the suffix, if the plain timestamp is already
16558: in use. Default is to not do this, but simply increment the unix
16559: timestamp by 1 until a unique key is obtained.
16560:
16561: 7. who: holder of locking key; defaults to user:domain for user.
16562:
16563: 8. locktries: number of attempts to obtain a lock (sleep of 1s before
16564: retrying); default is 3.
16565:
16566: 9. maxtries: number of attempts to obtain a unique suffix; default is 20.
16567:
16568: Returns:
16569:
16570: 1. suffix obtained (numeric)
16571:
16572: 2. result of deleting locking key (ok if deleted, or lock never obtained)
16573:
16574: 3. error: contains (localized) error message if an error occurred.
16575:
16576:
16577: =back
16578:
16579: =head2 HTTP Helper Routines
16580:
16581: =over 4
16582:
16583: =item *
16584:
16585: escape() : unpack non-word characters into CGI-compatible hex codes
16586:
16587: =item *
16588:
16589: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
16590:
16591: =back
16592:
16593: =head1 PRIVATE SUBROUTINES
16594:
16595: =head2 Underlying communication routines (Shouldn't call)
16596:
16597: =over 4
16598:
16599: =item *
16600:
16601: subreply() : tries to pass a message to lonc, returns con_lost if incapable
16602:
16603: =item *
16604:
16605: reply() : uses subreply to send a message to remote machine, logs all failures
16606:
16607: =item *
16608:
16609: critical() : passes a critical message to another server; if cannot
16610: get through then place message in connection buffer directory and
16611: returns con_delayed, if incapable of saving message, returns
16612: con_failed
16613:
16614: =item *
16615:
16616: reconlonc() : tries to reconnect lonc client processes.
16617:
16618: =back
16619:
16620: =head2 Resource Access Logging
16621:
16622: =over 4
16623:
16624: =item *
16625:
16626: flushcourselogs() : flush (save) buffer logs and access logs
16627:
16628: =item *
16629:
16630: courselog($what) : save message for course in hash
16631:
16632: =item *
16633:
16634: courseacclog($what) : save message for course using &courselog(). Perform
16635: special processing for specific resource types (problems, exams, quizzes, etc).
16636:
16637: =item *
16638:
16639: goodbye() : flush course logs and log shutting down; it is called in srm.conf
16640: as a PerlChildExitHandler
16641:
16642: =back
16643:
16644: =head2 Other
16645:
16646: =over 4
16647:
16648: =item *
16649:
16650: symblist($mapname,%newhash) : update symbolic storage links
16651:
16652: =back
16653:
16654: =cut
16655:
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