1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1417 2020/01/17 04:51:33 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: =pod
31:
32: =head1 NAME
33:
34: Apache::lonnet.pm
35:
36: =head1 SYNOPSIS
37:
38: This file is an interface to the lonc processes of
39: the LON-CAPA network as well as set of elaborated functions for handling information
40: necessary for navigating through a given cluster of LON-CAPA machines within a
41: domain. There are over 40 specialized functions in this module which handle the
42: reading and transmission of metadata, user information (ids, names, environments, roles,
43: logs), file information (storage, reading, directories, extensions, replication, embedded
44: styles and descriptors), educational resources (course descriptions, section names and
45: numbers), url hashing (to assign roles on a url basis), and translating abbreviated symbols to
46: and from more descriptive phrases or explanations.
47:
48: This is part of the LearningOnline Network with CAPA project
49: described at http://www.lon-capa.org.
50:
51: =head1 Package Variables
52:
53: These are largely undocumented, so if you decipher one please note it here.
54:
55: =over 4
56:
57: =item $processmarker
58:
59: Contains the time this process was started and this servers host id.
60:
61: =item $dumpcount
62:
63: Counts the number of times a message log flush has been attempted (regardless
64: of success) by this process. Used as part of the filename when messages are
65: delayed.
66:
67: =back
68:
69: =cut
70:
71: package Apache::lonnet;
72:
73: use strict;
74: use HTTP::Date;
75: use Image::Magick;
76: use CGI::Cookie;
77:
78: use Encode;
79:
80: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir $deftex
81: $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease
82: %managerstab $passwdmin);
83:
84: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
85: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
86: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
87: %courseownerbuf, %coursetypebuf,$locknum);
88:
89: use IO::Socket;
90: use GDBM_File;
91: use HTML::LCParser;
92: use Fcntl qw(:flock);
93: use Storable qw(thaw nfreeze);
94: use Time::HiRes qw( sleep gettimeofday tv_interval );
95: use Cache::Memcached;
96: use Digest::MD5;
97: use Math::Random;
98: use File::MMagic;
99: use 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 $lcrev = &get_server_loncaparev($udom,$homeserver);
2265: my ($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 $lcrev = &get_server_loncaparev($dom,$tryserver);
2316: my ($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 $cats;
2742: }
2743:
2744: sub get_dom_instcats {
2745: my ($dom) = @_;
2746: return unless (&domain($dom));
2747: my ($instcats,$cached)=&is_cached_new('instcats',$dom);
2748: unless (defined($cached)) {
2749: my (%coursecodes,%codes,@codetitles,%cat_titles,%cat_order);
2750: my $totcodes = &retrieve_instcodes(\%coursecodes,$dom);
2751: if ($totcodes > 0) {
2752: my $caller = 'global';
2753: if (&auto_instcode_format($caller,$dom,\%coursecodes,\%codes,
2754: \@codetitles,\%cat_titles,\%cat_order) eq 'ok') {
2755: $instcats = {
2756: codes => \%codes,
2757: codetitles => \@codetitles,
2758: cat_titles => \%cat_titles,
2759: cat_order => \%cat_order,
2760: };
2761: &do_cache_new('instcats',$dom,$instcats,3600);
2762: }
2763: }
2764: }
2765: return $instcats;
2766: }
2767:
2768: sub retrieve_instcodes {
2769: my ($coursecodes,$dom) = @_;
2770: my $totcodes;
2771: my %courses = &courseiddump($dom,'.',1,'.','.','.',undef,undef,'Course');
2772: foreach my $course (keys(%courses)) {
2773: if (ref($courses{$course}) eq 'HASH') {
2774: if ($courses{$course}{'inst_code'} ne '') {
2775: $$coursecodes{$course} = $courses{$course}{'inst_code'};
2776: $totcodes ++;
2777: }
2778: }
2779: }
2780: return $totcodes;
2781: }
2782:
2783: sub course_portal_url {
2784: my ($cnum,$cdom) = @_;
2785: my $chome = &homeserver($cnum,$cdom);
2786: my $hostname = &hostname($chome);
2787: my $protocol = $protocol{$chome};
2788: $protocol = 'http' if ($protocol ne 'https');
2789: my %domdefaults = &get_domain_defaults($cdom);
2790: my $firsturl;
2791: if ($domdefaults{'portal_def'}) {
2792: $firsturl = $domdefaults{'portal_def'};
2793: } else {
2794: $firsturl = $protocol.'://'.$hostname;
2795: }
2796: return $firsturl;
2797: }
2798:
2799: # --------------------------------------------- Get domain config for passwords
2800:
2801: sub get_passwdconf {
2802: my ($dom) = @_;
2803: my (%passwdconf,$gotconf,$lookup);
2804: my ($result,$cached)=&is_cached_new('passwdconf',$dom);
2805: if (defined($cached)) {
2806: if (ref($result) eq 'HASH') {
2807: %passwdconf = %{$result};
2808: $gotconf = 1;
2809: }
2810: }
2811: unless ($gotconf) {
2812: my %domconfig = &get_dom('configuration',['passwords'],$dom);
2813: if (ref($domconfig{'passwords'}) eq 'HASH') {
2814: %passwdconf = %{$domconfig{'passwords'}};
2815: }
2816: my $cachetime = 24*60*60;
2817: &do_cache_new('passwdconf',$dom,\%passwdconf,$cachetime);
2818: }
2819: return %passwdconf;
2820: }
2821:
2822: # --------------------------------------------------- Assign a key to a student
2823:
2824: sub assign_access_key {
2825: #
2826: # a valid key looks like uname:udom#comments
2827: # comments are being appended
2828: #
2829: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2830: $kdom=
2831: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2832: $knum=
2833: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2834: $cdom=
2835: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2836: $cnum=
2837: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2838: $udom=$env{'user.name'} unless (defined($udom));
2839: $uname=$env{'user.domain'} unless (defined($uname));
2840: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2841: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2842: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2843: # assigned to this person
2844: # - this should not happen,
2845: # unless something went wrong
2846: # the first time around
2847: # ready to assign
2848: $logentry=$1.'; '.$logentry;
2849: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2850: $kdom,$knum) eq 'ok') {
2851: # key now belongs to user
2852: my $envkey='key.'.$cdom.'_'.$cnum;
2853: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2854: &appenv({'environment.'.$envkey => $ckey});
2855: return 'ok';
2856: } else {
2857: return
2858: 'error: Count not permanently assign key, will need to be re-entered later.';
2859: }
2860: } else {
2861: return 'error: Could not assign key, try again later.';
2862: }
2863: } elsif (!$existing{$ckey}) {
2864: # the key does not exist
2865: return 'error: The key does not exist';
2866: } else {
2867: # the key is somebody else's
2868: return 'error: The key is already in use';
2869: }
2870: }
2871:
2872: # ------------------------------------------ put an additional comment on a key
2873:
2874: sub comment_access_key {
2875: #
2876: # a valid key looks like uname:udom#comments
2877: # comments are being appended
2878: #
2879: my ($ckey,$cdom,$cnum,$logentry)=@_;
2880: $cdom=
2881: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2882: $cnum=
2883: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2884: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2885: if ($existing{$ckey}) {
2886: $existing{$ckey}.='; '.$logentry;
2887: # ready to assign
2888: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2889: $cdom,$cnum) eq 'ok') {
2890: return 'ok';
2891: } else {
2892: return 'error: Count not store comment.';
2893: }
2894: } else {
2895: # the key does not exist
2896: return 'error: The key does not exist';
2897: }
2898: }
2899:
2900: # ------------------------------------------------------ Generate a set of keys
2901:
2902: sub generate_access_keys {
2903: my ($number,$cdom,$cnum,$logentry)=@_;
2904: $cdom=
2905: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2906: $cnum=
2907: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2908: unless (&allowed('mky',$cdom)) { return 0; }
2909: unless (($cdom) && ($cnum)) { return 0; }
2910: if ($number>10000) { return 0; }
2911: sleep(2); # make sure don't get same seed twice
2912: srand(time()^($$+($$<<15))); # from "Programming Perl"
2913: my $total=0;
2914: for (my $i=1;$i<=$number;$i++) {
2915: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2916: sprintf("%lx",int(100000*rand)).'-'.
2917: sprintf("%lx",int(100000*rand));
2918: $newkey=~s/1/g/g; # folks mix up 1 and l
2919: $newkey=~s/0/h/g; # and also 0 and O
2920: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2921: if ($existing{$newkey}) {
2922: $i--;
2923: } else {
2924: if (&put('accesskeys',
2925: { $newkey => '# generated '.localtime().
2926: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2927: '; '.$logentry },
2928: $cdom,$cnum) eq 'ok') {
2929: $total++;
2930: }
2931: }
2932: }
2933: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2934: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2935: return $total;
2936: }
2937:
2938: # ------------------------------------------------------- Validate an accesskey
2939:
2940: sub validate_access_key {
2941: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2942: $cdom=
2943: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2944: $cnum=
2945: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2946: $udom=$env{'user.domain'} unless (defined($udom));
2947: $uname=$env{'user.name'} unless (defined($uname));
2948: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2949: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2950: }
2951:
2952: # ------------------------------------- Find the section of student in a course
2953: sub devalidate_getsection_cache {
2954: my ($udom,$unam,$courseid)=@_;
2955: my $hashid="$udom:$unam:$courseid";
2956: &devalidate_cache_new('getsection',$hashid);
2957: }
2958:
2959: sub courseid_to_courseurl {
2960: my ($courseid) = @_;
2961: #already url style courseid
2962: return $courseid if ($courseid =~ m{^/});
2963:
2964: if (exists($env{'course.'.$courseid.'.num'})) {
2965: my $cnum = $env{'course.'.$courseid.'.num'};
2966: my $cdom = $env{'course.'.$courseid.'.domain'};
2967: return "/$cdom/$cnum";
2968: }
2969:
2970: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2971: if (exists($courseinfo{'num'})) {
2972: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2973: }
2974:
2975: return undef;
2976: }
2977:
2978: sub getsection {
2979: my ($udom,$unam,$courseid)=@_;
2980: my $cachetime=1800;
2981:
2982: my $hashid="$udom:$unam:$courseid";
2983: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2984: if (defined($cached)) { return $result; }
2985:
2986: my %Pending;
2987: my %Expired;
2988: #
2989: # Each role can either have not started yet (pending), be active,
2990: # or have expired.
2991: #
2992: # If there is an active role, we are done.
2993: #
2994: # If there is more than one role which has not started yet,
2995: # choose the one which will start sooner
2996: # If there is one role which has not started yet, return it.
2997: #
2998: # If there is more than one expired role, choose the one which ended last.
2999: # If there is a role which has expired, return it.
3000: #
3001: $courseid = &courseid_to_courseurl($courseid);
3002: my %roleshash = &dump('roles',$udom,$unam,$courseid);
3003: foreach my $key (keys(%roleshash)) {
3004: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
3005: my $section=$1;
3006: if ($key eq $courseid.'_st') { $section=''; }
3007: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
3008: my $now=time;
3009: if (defined($end) && $end && ($now > $end)) {
3010: $Expired{$end}=$section;
3011: next;
3012: }
3013: if (defined($start) && $start && ($now < $start)) {
3014: $Pending{$start}=$section;
3015: next;
3016: }
3017: return &do_cache_new('getsection',$hashid,$section,$cachetime);
3018: }
3019: #
3020: # Presumedly there will be few matching roles from the above
3021: # loop and the sorting time will be negligible.
3022: if (scalar(keys(%Pending))) {
3023: my ($time) = sort {$a <=> $b} keys(%Pending);
3024: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
3025: }
3026: if (scalar(keys(%Expired))) {
3027: my @sorted = sort {$a <=> $b} keys(%Expired);
3028: my $time = pop(@sorted);
3029: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
3030: }
3031: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
3032: }
3033:
3034: sub save_cache {
3035: &purge_remembered();
3036: #&Apache::loncommon::validate_page();
3037: undef(%env);
3038: undef($env_loaded);
3039: }
3040:
3041: my $to_remember=-1;
3042: my %remembered;
3043: my %accessed;
3044: my $kicks=0;
3045: my $hits=0;
3046: sub make_key {
3047: my ($name,$id) = @_;
3048: if (length($id) > 65
3049: && length(&escape($id)) > 200) {
3050: $id=length($id).':'.&Digest::MD5::md5_hex($id);
3051: }
3052: return &escape($name.':'.$id);
3053: }
3054:
3055: sub devalidate_cache_new {
3056: my ($name,$id,$debug) = @_;
3057: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
3058: my $remembered_id=$name.':'.$id;
3059: $id=&make_key($name,$id);
3060: $memcache->delete($id);
3061: delete($remembered{$remembered_id});
3062: delete($accessed{$remembered_id});
3063: }
3064:
3065: sub is_cached_new {
3066: my ($name,$id,$debug) = @_;
3067: my $remembered_id=$name.':'.$id; # this is to avoid make_key (which is slow) whenever possible
3068: if (exists($remembered{$remembered_id})) {
3069: if ($debug) { &Apache::lonnet::logthis("Early return $remembered_id of $remembered{$remembered_id} "); }
3070: $accessed{$remembered_id}=[&gettimeofday()];
3071: $hits++;
3072: return ($remembered{$remembered_id},1);
3073: }
3074: $id=&make_key($name,$id);
3075: my $value = $memcache->get($id);
3076: if (!(defined($value))) {
3077: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
3078: return (undef,undef);
3079: }
3080: if ($value eq '__undef__') {
3081: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
3082: $value=undef;
3083: }
3084: &make_room($remembered_id,$value,$debug);
3085: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
3086: return ($value,1);
3087: }
3088:
3089: sub do_cache_new {
3090: my ($name,$id,$value,$time,$debug) = @_;
3091: my $remembered_id=$name.':'.$id;
3092: $id=&make_key($name,$id);
3093: my $setvalue=$value;
3094: if (!defined($setvalue)) {
3095: $setvalue='__undef__';
3096: }
3097: if (!defined($time) ) {
3098: $time=600;
3099: }
3100: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
3101: my $result = $memcache->set($id,$setvalue,$time);
3102: if (! $result) {
3103: &logthis("caching of id -> $id failed");
3104: $memcache->disconnect_all();
3105: }
3106: # need to make a copy of $value
3107: &make_room($remembered_id,$value,$debug);
3108: return $value;
3109: }
3110:
3111: sub make_room {
3112: my ($remembered_id,$value,$debug)=@_;
3113:
3114: $remembered{$remembered_id}= (ref($value)) ? &Storable::dclone($value)
3115: : $value;
3116: if ($to_remember<0) { return; }
3117: $accessed{$remembered_id}=[&gettimeofday()];
3118: if (scalar(keys(%remembered)) <= $to_remember) { return; }
3119: my $to_kick;
3120: my $max_time=0;
3121: foreach my $other (keys(%accessed)) {
3122: if (&tv_interval($accessed{$other}) > $max_time) {
3123: $to_kick=$other;
3124: $max_time=&tv_interval($accessed{$other});
3125: }
3126: }
3127: delete($remembered{$to_kick});
3128: delete($accessed{$to_kick});
3129: $kicks++;
3130: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
3131: return;
3132: }
3133:
3134: sub purge_remembered {
3135: #&logthis("Tossing ".scalar(keys(%remembered)));
3136: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
3137: undef(%remembered);
3138: undef(%accessed);
3139: }
3140: # ------------------------------------- Read an entry from a user's environment
3141:
3142: sub userenvironment {
3143: my ($udom,$unam,@what)=@_;
3144: my $items;
3145: foreach my $item (@what) {
3146: $items.=&escape($item).'&';
3147: }
3148: $items=~s/\&$//;
3149: my %returnhash=();
3150: my $uhome = &homeserver($unam,$udom);
3151: unless ($uhome eq 'no_host') {
3152: my @answer=split(/\&/,
3153: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
3154: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
3155: return %returnhash;
3156: }
3157: my $i;
3158: for ($i=0;$i<=$#what;$i++) {
3159: $returnhash{$what[$i]}=&unescape($answer[$i]);
3160: }
3161: }
3162: return %returnhash;
3163: }
3164:
3165: # ---------------------------------------------------------- Get a studentphoto
3166: sub studentphoto {
3167: my ($udom,$unam,$ext) = @_;
3168: my $home=&Apache::lonnet::homeserver($unam,$udom);
3169: if (defined($env{'request.course.id'})) {
3170: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
3171: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
3172: return(&retrievestudentphoto($udom,$unam,$ext));
3173: } else {
3174: my ($result,$perm_reqd)=
3175: &Apache::lonnet::auto_photo_permission($unam,$udom);
3176: if ($result eq 'ok') {
3177: if (!($perm_reqd eq 'yes')) {
3178: return(&retrievestudentphoto($udom,$unam,$ext));
3179: }
3180: }
3181: }
3182: }
3183: } else {
3184: my ($result,$perm_reqd) =
3185: &Apache::lonnet::auto_photo_permission($unam,$udom);
3186: if ($result eq 'ok') {
3187: if (!($perm_reqd eq 'yes')) {
3188: return(&retrievestudentphoto($udom,$unam,$ext));
3189: }
3190: }
3191: }
3192: return '/adm/lonKaputt/lonlogo_broken.gif';
3193: }
3194:
3195: sub retrievestudentphoto {
3196: my ($udom,$unam,$ext,$type) = @_;
3197: my $home=&Apache::lonnet::homeserver($unam,$udom);
3198: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
3199: if ($ret eq 'ok') {
3200: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
3201: if ($type eq 'thumbnail') {
3202: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
3203: }
3204: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
3205: return $tokenurl;
3206: } else {
3207: if ($type eq 'thumbnail') {
3208: return '/adm/lonKaputt/genericstudent_tn.gif';
3209: } else {
3210: return '/adm/lonKaputt/lonlogo_broken.gif';
3211: }
3212: }
3213: }
3214:
3215: # -------------------------------------------------------------------- New chat
3216:
3217: sub chatsend {
3218: my ($newentry,$anon,$group)=@_;
3219: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
3220: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3221: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
3222: &reply('chatsend:'.$cdom.':'.$cnum.':'.
3223: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
3224: &escape($newentry)).':'.$group,$chome);
3225: }
3226:
3227: # ------------------------------------------ Find current version of a resource
3228:
3229: sub getversion {
3230: my $fname=&clutter(shift);
3231: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
3232: return ¤tversion(&filelocation('',$fname));
3233: }
3234:
3235: sub currentversion {
3236: my $fname=shift;
3237: my $author=$fname;
3238: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3239: my ($udom,$uname)=split(/\//,$author);
3240: my $home=&homeserver($uname,$udom);
3241: if ($home eq 'no_host') {
3242: return -1;
3243: }
3244: my $answer=&reply("currentversion:$fname",$home);
3245: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3246: return -1;
3247: }
3248: return $answer;
3249: }
3250:
3251: #
3252: # Return special version number of resource if set by override, empty otherwise
3253: #
3254: sub usedversion {
3255: my $fname=shift;
3256: unless ($fname) { $fname=$env{'request.uri'}; }
3257: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
3258: if ($urlversion) { return $urlversion; }
3259: return '';
3260: }
3261:
3262: # ----------------------------- Subscribe to a resource, return URL if possible
3263:
3264: sub subscribe {
3265: my $fname=shift;
3266: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
3267: $fname=~s/[\n\r]//g;
3268: my $author=$fname;
3269: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3270: my ($udom,$uname)=split(/\//,$author);
3271: my $home=homeserver($uname,$udom);
3272: if ($home eq 'no_host') {
3273: return 'not_found';
3274: }
3275: my $answer=reply("sub:$fname",$home);
3276: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3277: $answer.=' by '.$home;
3278: }
3279: return $answer;
3280: }
3281:
3282: # -------------------------------------------------------------- Replicate file
3283:
3284: sub repcopy {
3285: my $filename=shift;
3286: $filename=~s/\/+/\//g;
3287: my $londocroot = $perlvar{'lonDocRoot'};
3288: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
3289: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
3290: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
3291: $filename=~m{^/*(uploaded|editupload)/}) {
3292: return &repcopy_userfile($filename);
3293: }
3294: $filename=~s/[\n\r]//g;
3295: my $transname="$filename.in.transfer";
3296: # FIXME: this should flock
3297: if ((-e $filename) || (-e $transname)) { return 'ok'; }
3298: my $remoteurl=subscribe($filename);
3299: if ($remoteurl =~ /^con_lost by/) {
3300: &logthis("Subscribe returned $remoteurl: $filename");
3301: return 'unavailable';
3302: } elsif ($remoteurl eq 'not_found') {
3303: #&logthis("Subscribe returned not_found: $filename");
3304: return 'not_found';
3305: } elsif ($remoteurl =~ /^rejected by/) {
3306: &logthis("Subscribe returned $remoteurl: $filename");
3307: return 'forbidden';
3308: } elsif ($remoteurl eq 'directory') {
3309: return 'ok';
3310: } else {
3311: my $author=$filename;
3312: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3313: my ($udom,$uname)=split(/\//,$author);
3314: my $home=homeserver($uname,$udom);
3315: unless ($home eq $perlvar{'lonHostID'}) {
3316: my @parts=split(/\//,$filename);
3317: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
3318: if ($path ne "$londocroot/res") {
3319: &logthis("Malconfiguration for replication: $filename");
3320: return 'bad_request';
3321: }
3322: my $count;
3323: for ($count=5;$count<$#parts;$count++) {
3324: $path.="/$parts[$count]";
3325: if ((-e $path)!=1) {
3326: mkdir($path,0777);
3327: }
3328: }
3329: my $request=new HTTP::Request('GET',"$remoteurl");
3330: my $response;
3331: if ($remoteurl =~ m{/raw/}) {
3332: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',0,1);
3333: } else {
3334: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',1);
3335: }
3336: if ($response->is_error()) {
3337: unlink($transname);
3338: my $message=$response->status_line;
3339: &logthis("<font color=\"blue\">WARNING:"
3340: ." LWP get: $message: $filename</font>");
3341: return 'unavailable';
3342: } else {
3343: if ($remoteurl!~/\.meta$/) {
3344: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
3345: my $mresponse;
3346: if ($remoteurl =~ m{/raw/}) {
3347: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',0,1);
3348: } else {
3349: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',1);
3350: }
3351: if ($mresponse->is_error()) {
3352: unlink($filename.'.meta');
3353: &logthis(
3354: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
3355: }
3356: }
3357: rename($transname,$filename);
3358: return 'ok';
3359: }
3360: }
3361: }
3362: }
3363:
3364: # ------------------------------------------------ Get server side include body
3365: sub ssi_body {
3366: my ($filelink,%form)=@_;
3367: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
3368: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
3369: }
3370: my $output='';
3371: my $response;
3372: if ($filelink=~/^https?\:/) {
3373: ($output,$response)=&externalssi($filelink);
3374: } else {
3375: $filelink .= $filelink=~/\?/ ? '&' : '?';
3376: $filelink .= 'inhibitmenu=yes';
3377: ($output,$response)=&ssi($filelink,%form);
3378: }
3379: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
3380: $output=~s/^.*?\<body[^\>]*\>//si;
3381: $output=~s/\<\/body\s*\>.*?$//si;
3382: if (wantarray) {
3383: return ($output, $response);
3384: } else {
3385: return $output;
3386: }
3387: }
3388:
3389: # --------------------------------------------------------- Server Side Include
3390:
3391: sub absolute_url {
3392: my ($host_name) = @_;
3393: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
3394: if ($host_name eq '') {
3395: $host_name = $ENV{'SERVER_NAME'};
3396: }
3397: return $protocol.$host_name;
3398: }
3399:
3400: #
3401: # Server side include.
3402: # Parameters:
3403: # fn Possibly encrypted resource name/id.
3404: # form Hash that describes how the rendering should be done
3405: # and other things.
3406: # Returns:
3407: # Scalar context: The content of the response.
3408: # Array context: 2 element list of the content and the full response object.
3409: #
3410: sub ssi {
3411:
3412: my ($fn,%form)=@_;
3413: my $request;
3414:
3415: $form{'no_update_last_known'}=1;
3416: &Apache::lonenc::check_encrypt(\$fn);
3417: if (%form) {
3418: $request=new HTTP::Request('POST',&absolute_url().$fn);
3419: $request->content(join('&',map {
3420: my $name = escape($_);
3421: "$name=" . ( ref($form{$_}) eq 'ARRAY'
3422: ? join("&$name=", map {escape($_) } @{$form{$_}})
3423: : &escape($form{$_}) );
3424: } keys(%form)));
3425: } else {
3426: $request=new HTTP::Request('GET',&absolute_url().$fn);
3427: }
3428:
3429: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
3430: my $lonhost = $perlvar{'lonHostID'};
3431: my $islocal;
3432: if (($env{'request.course.id'}) &&
3433: ($form{'grade_courseid'} eq $env{'request.course.id'}) &&
3434: ($form{'grade_username'} ne '') && ($form{'grade_domain'} ne '') &&
3435: ($form{'grade_symb'} ne '') &&
3436: (&Apache::lonnet::allowed('mgr',$env{'request.course.id'}.
3437: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:'')))) {
3438: $islocal = 1;
3439: }
3440: my $response= &LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,
3441: '','','',$islocal);
3442:
3443: if (wantarray) {
3444: return ($response->content, $response);
3445: } else {
3446: return $response->content;
3447: }
3448: }
3449:
3450: sub externalssi {
3451: my ($url)=@_;
3452: my $request=new HTTP::Request('GET',$url);
3453: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar);
3454: if (wantarray) {
3455: return ($response->content, $response);
3456: } else {
3457: return $response->content;
3458: }
3459: }
3460:
3461:
3462: # If the local copy of a replicated resource is outdated, trigger a
3463: # connection from the homeserver to flush the delayed queue. If no update
3464: # happens, remove local copies of outdated resource (and corresponding
3465: # metadata file).
3466:
3467: sub remove_stale_resfile {
3468: my ($url) = @_;
3469: my $removed;
3470: if ($url=~m{^/res/($match_domain)/($match_username)/}) {
3471: my $audom = $1;
3472: my $auname = $2;
3473: unless (($url =~ /\.\d+\.\w+$/) || ($url =~ m{^/res/lib/templates/})) {
3474: my $homeserver = &homeserver($auname,$audom);
3475: unless (($homeserver eq 'no_host') ||
3476: (grep { $_ eq $homeserver } ¤t_machine_ids())) {
3477: my $fname = &filelocation('',$url);
3478: if (-e $fname) {
3479: my $hostname = &hostname($homeserver);
3480: if ($hostname) {
3481: my $protocol = $protocol{$homeserver};
3482: $protocol = 'http' if ($protocol ne 'https');
3483: my $uri = &declutter($url);
3484: my $request=new HTTP::Request('HEAD',$protocol.'://'.$hostname.'/raw/'.$uri);
3485: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,5,0,1);
3486: if ($response->is_success()) {
3487: my $remmodtime = &HTTP::Date::str2time( $response->header('Last-modified') );
3488: my $locmodtime = (stat($fname))[9];
3489: if ($locmodtime < $remmodtime) {
3490: my $stale;
3491: my $answer = &reply('pong',$homeserver);
3492: if ($answer eq $homeserver.':'.$perlvar{'lonHostID'}) {
3493: sleep(0.2);
3494: $locmodtime = (stat($fname))[9];
3495: if ($locmodtime < $remmodtime) {
3496: my $posstransfer = $fname.'.in.transfer';
3497: if ((-e $posstransfer) && ($remmodtime < (stat($posstransfer))[9])) {
3498: $removed = 1;
3499: } else {
3500: $stale = 1;
3501: }
3502: } else {
3503: $removed = 1;
3504: }
3505: } else {
3506: $stale = 1;
3507: }
3508: if ($stale) {
3509: unlink($fname);
3510: if ($uri!~/\.meta$/) {
3511: unlink($fname.'.meta');
3512: }
3513: &reply("unsub:$fname",$homeserver);
3514: $removed = 1;
3515: }
3516: }
3517: }
3518: }
3519: }
3520: }
3521: }
3522: }
3523: return $removed;
3524: }
3525:
3526: # -------------------------------- Allow a /uploaded/ URI to be vouched for
3527:
3528: sub allowuploaded {
3529: my ($srcurl,$url)=@_;
3530: $url=&clutter(&declutter($url));
3531: my $dir=$url;
3532: $dir=~s/\/[^\/]+$//;
3533: my %httpref=();
3534: my $httpurl=&hreflocation('',$url);
3535: $httpref{'httpref.'.$httpurl}=$srcurl;
3536: &Apache::lonnet::appenv(\%httpref);
3537: }
3538:
3539: #
3540: # Determine if the current user should be able to edit a particular resource,
3541: # when viewing in course context.
3542: # (a) When viewing resource used to determine if "Edit" item is included in
3543: # Functions.
3544: # (b) When displaying folder contents in course editor, used to determine if
3545: # "Edit" link will be displayed alongside resource.
3546: #
3547: # input: six args -- filename (decluttered), course number, course domain,
3548: # url, symb (if registered) and group (if this is a group
3549: # item -- e.g., bulletin board, group page etc.).
3550: # output: array of five scalars --
3551: # $cfile -- url for file editing if editable on current server
3552: # $home -- homeserver of resource (i.e., for author if published,
3553: # or course if uploaded.).
3554: # $switchserver -- 1 if server switch will be needed.
3555: # $forceedit -- 1 if icon/link should be to go to edit mode
3556: # $forceview -- 1 if icon/link should be to go to view mode
3557: #
3558:
3559: sub can_edit_resource {
3560: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
3561: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
3562: #
3563: # For aboutme pages user can only edit his/her own.
3564: #
3565: if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
3566: my ($sdom,$sname) = ($1,$2);
3567: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
3568: $home = $env{'user.home'};
3569: $cfile = $resurl;
3570: if ($env{'form.forceedit'}) {
3571: $forceview = 1;
3572: } else {
3573: $forceedit = 1;
3574: }
3575: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3576: } else {
3577: return;
3578: }
3579: }
3580:
3581: if ($env{'request.course.id'}) {
3582: my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
3583: if ($group ne '') {
3584: # if this is a group homepage or group bulletin board, check group privs
3585: my $allowed = 0;
3586: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
3587: if ((&allowed('mdg',$env{'request.course.id'}.
3588: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3589: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3590: $allowed = 1;
3591: }
3592: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
3593: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3594: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3595: $allowed = 1;
3596: }
3597: }
3598: if ($allowed) {
3599: $home=&homeserver($cnum,$cdom);
3600: if ($env{'form.forceedit'}) {
3601: $forceview = 1;
3602: } else {
3603: $forceedit = 1;
3604: }
3605: $cfile = $resurl;
3606: } else {
3607: return;
3608: }
3609: } else {
3610: if ($resurl =~ m{^/?adm/viewclasslist$}) {
3611: unless (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
3612: return;
3613: }
3614: } elsif (!$crsedit) {
3615: #
3616: # No edit allowed where CC has switched to student role.
3617: #
3618: return;
3619: }
3620: }
3621: }
3622:
3623: if ($file ne '') {
3624: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
3625: if (&is_course_upload($file,$cnum,$cdom)) {
3626: $uploaded = 1;
3627: $incourse = 1;
3628: if ($file =~/\.(htm|html|css|js|txt)$/) {
3629: $cfile = &hreflocation('',$file);
3630: if ($env{'form.forceedit'}) {
3631: $forceview = 1;
3632: } else {
3633: $forceedit = 1;
3634: }
3635: }
3636: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
3637: $incourse = 1;
3638: if ($env{'form.forceedit'}) {
3639: $forceview = 1;
3640: } else {
3641: $forceedit = 1;
3642: }
3643: $cfile = $resurl;
3644: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
3645: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
3646: $incourse = 1;
3647: if ($env{'form.forceedit'}) {
3648: $forceview = 1;
3649: } else {
3650: $forceedit = 1;
3651: }
3652: $cfile = $resurl;
3653: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem') {
3654: $incourse = 1;
3655: $cfile = $resurl.'/smpedit';
3656: } elsif ($resurl =~ m{^/adm/wrapper/ext/}) {
3657: $incourse = 1;
3658: if ($env{'form.forceedit'}) {
3659: $forceview = 1;
3660: } else {
3661: $forceedit = 1;
3662: }
3663: $cfile = $resurl;
3664: } elsif ($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3665: $incourse = 1;
3666: if ($env{'form.forceedit'}) {
3667: $forceview = 1;
3668: } else {
3669: $forceedit = 1;
3670: }
3671: $cfile = $resurl;
3672: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3673: $incourse = 1;
3674: if ($env{'form.forceedit'}) {
3675: $forceview = 1;
3676: } else {
3677: $forceedit = 1;
3678: }
3679: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3680: }
3681: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
3682: my $template = '/res/lib/templates/simpleproblem.problem';
3683: if (&is_on_map($template)) {
3684: $incourse = 1;
3685: $forceview = 1;
3686: $cfile = $template;
3687: }
3688: } elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3689: $incourse = 1;
3690: if ($env{'form.forceedit'}) {
3691: $forceview = 1;
3692: } else {
3693: $forceedit = 1;
3694: }
3695: $cfile = $resurl;
3696: } elsif (($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3697: $incourse = 1;
3698: if ($env{'form.forceedit'}) {
3699: $forceview = 1;
3700: } else {
3701: $forceedit = 1;
3702: }
3703: $cfile = $resurl;
3704: } elsif (($resurl eq '/adm/extresedit') && ($symb || $env{'form.folderpath'})) {
3705: $incourse = 1;
3706: $forceview = 1;
3707: if ($symb) {
3708: my ($map,$id,$res)=&decode_symb($symb);
3709: $env{'request.symb'} = $symb;
3710: $cfile = &clutter($res);
3711: } else {
3712: $cfile = $env{'form.suppurl'};
3713: my $escfile = &unescape($cfile);
3714: if ($escfile =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3715: $cfile = '/adm/wrapper'.$escfile;
3716: } else {
3717: $escfile =~ s{^http://}{};
3718: $cfile = &escape("/adm/wrapper/ext/$escfile");
3719: }
3720: }
3721: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3722: if ($env{'form.forceedit'}) {
3723: $forceview = 1;
3724: } else {
3725: $forceedit = 1;
3726: }
3727: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3728: }
3729: }
3730: if ($uploaded || $incourse) {
3731: $home=&homeserver($cnum,$cdom);
3732: } elsif ($file !~ m{/$}) {
3733: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
3734: $file=~s{^($match_domain/$match_username)}{/priv/$1};
3735: # Check that the user has permission to edit this resource
3736: my $setpriv = 1;
3737: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
3738: if (defined($cfudom)) {
3739: $home=&homeserver($cfuname,$cfudom);
3740: $cfile=$file;
3741: }
3742: }
3743: if (($cfile ne '') && (!$incourse || $uploaded) &&
3744: (($home ne '') && ($home ne 'no_host'))) {
3745: my @ids=¤t_machine_ids();
3746: unless (grep(/^\Q$home\E$/,@ids)) {
3747: $switchserver=1;
3748: }
3749: }
3750: }
3751: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3752: }
3753:
3754: sub is_course_upload {
3755: my ($file,$cnum,$cdom) = @_;
3756: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
3757: $uploadpath =~ s{^\/}{};
3758: if (($file =~ m{^\Q$uploadpath\E/userfiles/(docs|supplemental)/}) ||
3759: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/})) {
3760: return 1;
3761: }
3762: return;
3763: }
3764:
3765: sub in_course {
3766: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
3767: if ($hideprivileged) {
3768: my $skipuser;
3769: my %coursehash = &coursedescription($cdom.'_'.$cnum);
3770: my @possdoms = ($cdom);
3771: if ($coursehash{'checkforpriv'}) {
3772: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
3773: }
3774: if (&privileged($uname,$udom,\@possdoms)) {
3775: $skipuser = 1;
3776: if ($coursehash{'nothideprivileged'}) {
3777: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3778: my $user;
3779: if ($item =~ /:/) {
3780: $user = $item;
3781: } else {
3782: $user = join(':',split(/[\@]/,$item));
3783: }
3784: if ($user eq $uname.':'.$udom) {
3785: undef($skipuser);
3786: last;
3787: }
3788: }
3789: }
3790: if ($skipuser) {
3791: return 0;
3792: }
3793: }
3794: }
3795: $type ||= 'any';
3796: if (!defined($cdom) || !defined($cnum)) {
3797: my $cid = $env{'request.course.id'};
3798: $cdom = $env{'course.'.$cid.'.domain'};
3799: $cnum = $env{'course.'.$cid.'.num'};
3800: }
3801: my $typesref;
3802: if (($type eq 'any') || ($type eq 'all')) {
3803: $typesref = ['active','previous','future'];
3804: } elsif ($type eq 'previous' || $type eq 'future') {
3805: $typesref = [$type];
3806: }
3807: my %roles = &get_my_roles($uname,$udom,'userroles',
3808: $typesref,undef,[$cdom]);
3809: my ($tmp) = keys(%roles);
3810: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
3811: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
3812: if (@course_roles > 0) {
3813: return 1;
3814: }
3815: return 0;
3816: }
3817:
3818: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
3819: # input: action, courseID, current domain, intended
3820: # path to file, source of file, instruction to parse file for objects,
3821: # ref to hash for embedded objects,
3822: # ref to hash for codebase of java objects.
3823: # reference to scalar to accommodate mime type determined
3824: # from File::MMagic if $parser = parse.
3825: #
3826: # output: url to file (if action was uploaddoc),
3827: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
3828: #
3829: # Allows directory structure to be used within lonUsers/../userfiles/ for a
3830: # course.
3831: #
3832: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3833: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
3834: # course's home server.
3835: #
3836: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
3837: # be copied from $source (current location) to
3838: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3839: # and will then be copied to
3840: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
3841: # course's home server.
3842: #
3843: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3844: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
3845: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3846: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
3847: # in course's home server.
3848: #
3849:
3850: sub process_coursefile {
3851: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
3852: $mimetype)=@_;
3853: my $fetchresult;
3854: my $home=&homeserver($docuname,$docudom);
3855: if ($action eq 'propagate') {
3856: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3857: $home);
3858: } else {
3859: my $fpath = '';
3860: my $fname = $file;
3861: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3862: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3863: my $filepath = &build_filepath($fpath);
3864: if ($action eq 'copy') {
3865: if ($source eq '') {
3866: $fetchresult = 'no source file';
3867: return $fetchresult;
3868: } else {
3869: my $destination = $filepath.'/'.$fname;
3870: rename($source,$destination);
3871: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3872: $home);
3873: }
3874: } elsif ($action eq 'uploaddoc') {
3875: open(my $fh,'>',$filepath.'/'.$fname);
3876: print $fh $env{'form.'.$source};
3877: close($fh);
3878: if ($parser eq 'parse') {
3879: my $mm = new File::MMagic;
3880: my $type = $mm->checktype_filename($filepath.'/'.$fname);
3881: if ($type eq 'text/html') {
3882: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
3883: unless ($parse_result eq 'ok') {
3884: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
3885: }
3886: }
3887: if (ref($mimetype)) {
3888: $$mimetype = $type;
3889: }
3890: }
3891: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3892: $home);
3893: if ($fetchresult eq 'ok') {
3894: return '/uploaded/'.$fpath.'/'.$fname;
3895: } else {
3896: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3897: ' to host '.$home.': '.$fetchresult);
3898: return '/adm/notfound.html';
3899: }
3900: }
3901: }
3902: unless ( $fetchresult eq 'ok') {
3903: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3904: ' to host '.$home.': '.$fetchresult);
3905: }
3906: return $fetchresult;
3907: }
3908:
3909: sub build_filepath {
3910: my ($fpath) = @_;
3911: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
3912: unless ($fpath eq '') {
3913: my @parts=split('/',$fpath);
3914: foreach my $part (@parts) {
3915: $filepath.= '/'.$part;
3916: if ((-e $filepath)!=1) {
3917: mkdir($filepath,0777);
3918: }
3919: }
3920: }
3921: return $filepath;
3922: }
3923:
3924: sub store_edited_file {
3925: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
3926: my $file = $primary_url;
3927: $file =~ s#^/uploaded/$docudom/$docuname/##;
3928: my $fpath = '';
3929: my $fname = $file;
3930: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3931: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3932: my $filepath = &build_filepath($fpath);
3933: open(my $fh,'>',$filepath.'/'.$fname);
3934: print $fh $content;
3935: close($fh);
3936: my $home=&homeserver($docuname,$docudom);
3937: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3938: $home);
3939: if ($$fetchresult eq 'ok') {
3940: return '/uploaded/'.$fpath.'/'.$fname;
3941: } else {
3942: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3943: ' to host '.$home.': '.$$fetchresult);
3944: return '/adm/notfound.html';
3945: }
3946: }
3947:
3948: sub clean_filename {
3949: my ($fname,$args)=@_;
3950: # Replace Windows backslashes by forward slashes
3951: $fname=~s/\\/\//g;
3952: if (!$args->{'keep_path'}) {
3953: # Get rid of everything but the actual filename
3954: $fname=~s/^.*\/([^\/]+)$/$1/;
3955: }
3956: # Replace spaces by underscores
3957: $fname=~s/\s+/\_/g;
3958: # Transliterate non-ascii text to ascii
3959: my $lang = &Apache::lonlocal::current_language();
3960: $fname = &LONCAPA::transliterate::fname_to_ascii($fname,$lang);
3961: # Replace all other weird characters by nothing
3962: $fname=~s{[^/\w\.\-]}{}g;
3963: # Replace all .\d. sequences with _\d. so they no longer look like version
3964: # numbers
3965: $fname=~s/\.(\d+)(?=\.)/_$1/g;
3966: return $fname;
3967: }
3968:
3969: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
3970: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
3971: # image with the same aspect ratio as the original, but with dimensions which do
3972: # not exceed $resizewidth and $resizeheight.
3973:
3974: sub resizeImage {
3975: my ($img_path,$resizewidth,$resizeheight) = @_;
3976: my $ima = Image::Magick->new;
3977: my $resized;
3978: if (-e $img_path) {
3979: $ima->Read($img_path);
3980: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
3981: my $width = $ima->Get('width');
3982: my $height = $ima->Get('height');
3983: if ($width > $resizewidth) {
3984: my $factor = $width/$resizewidth;
3985: my $newheight = $height/$factor;
3986: $ima->Scale(width=>$resizewidth,height=>$newheight);
3987: $resized = 1;
3988: }
3989: }
3990: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
3991: my $width = $ima->Get('width');
3992: my $height = $ima->Get('height');
3993: if ($height > $resizeheight) {
3994: my $factor = $height/$resizeheight;
3995: my $newwidth = $width/$factor;
3996: $ima->Scale(width=>$newwidth,height=>$resizeheight);
3997: $resized = 1;
3998: }
3999: }
4000: if ($resized) {
4001: $ima->Write($img_path);
4002: }
4003: }
4004: return;
4005: }
4006:
4007: # --------------- Take an uploaded file and put it into the userfiles directory
4008: # input: $formname - the contents of the file are in $env{"form.$formname"}
4009: # the desired filename is in $env{"form.$formname.filename"}
4010: # $context - possible values: coursedoc, existingfile, overwrite,
4011: # canceloverwrite, scantron or ''.
4012: # if 'coursedoc': upload to the current course
4013: # if 'existingfile': write file to tmp/overwrites directory
4014: # if 'canceloverwrite': delete file written to tmp/overwrites directory
4015: # $context is passed as argument to &finishuserfileupload
4016: # $subdir - directory in userfile to store the file into
4017: # $parser - instruction to parse file for objects ($parser = parse) or
4018: # if context is 'scantron', $parser is hashref of csv column mapping
4019: # (e.g.,{ PaperID => 0, LastName => 1, FirstName => 2, ID => 3,
4020: # Section => 4, CODE => 5, FirstQuestion => 9 }).
4021: # $allfiles - reference to hash for embedded objects
4022: # $codebase - reference to hash for codebase of java objects
4023: # $desuname - username for permanent storage of uploaded file
4024: # $dsetudom - domain for permanaent storage of uploaded file
4025: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
4026: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
4027: # $resizewidth - width (pixels) to which to resize uploaded image
4028: # $resizeheight - height (pixels) to which to resize uploaded image
4029: # $mimetype - reference to scalar to accommodate mime type determined
4030: # from File::MMagic.
4031: #
4032: # output: url of file in userspace, or error: <message>
4033: # or /adm/notfound.html if failure to upload occurse
4034:
4035: sub userfileupload {
4036: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
4037: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
4038: if (!defined($subdir)) { $subdir='unknown'; }
4039: my $fname=$env{'form.'.$formname.'.filename'};
4040: $fname=&clean_filename($fname);
4041: # See if there is anything left
4042: unless ($fname) { return 'error: no uploaded file'; }
4043: # If filename now begins with a . prepend unix timestamp _ milliseconds
4044: if ($fname =~ /^\./) {
4045: my ($s,$usec) = &gettimeofday();
4046: while (length($usec) < 6) {
4047: $usec = '0'.$usec;
4048: }
4049: $fname = $s.'_'.substr($usec,0,3).$fname;
4050: }
4051: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
4052: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
4053: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
4054: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
4055: my $now = time;
4056: my $filepath;
4057: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
4058: $filepath = 'tmp/helprequests/'.$now;
4059: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
4060: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
4061: '_'.$env{'user.domain'}.'/pending';
4062: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
4063: my ($docuname,$docudom);
4064: if ($destudom =~ /^$match_domain$/) {
4065: $docudom = $destudom;
4066: } else {
4067: $docudom = $env{'user.domain'};
4068: }
4069: if ($destuname =~ /^$match_username$/) {
4070: $docuname = $destuname;
4071: } else {
4072: $docuname = $env{'user.name'};
4073: }
4074: if (exists($env{'form.group'})) {
4075: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4076: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4077: }
4078: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
4079: if ($context eq 'canceloverwrite') {
4080: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
4081: if (-e $tempfile) {
4082: my @info = stat($tempfile);
4083: if ($info[9] eq $env{'form.timestamp'}) {
4084: unlink($tempfile);
4085: }
4086: }
4087: return;
4088: }
4089: }
4090: # Create the directory if not present
4091: my @parts=split(/\//,$filepath);
4092: my $fullpath = $perlvar{'lonDaemons'};
4093: for (my $i=0;$i<@parts;$i++) {
4094: $fullpath .= '/'.$parts[$i];
4095: if ((-e $fullpath)!=1) {
4096: mkdir($fullpath,0777);
4097: }
4098: }
4099: open(my $fh,'>',$fullpath.'/'.$fname);
4100: print $fh $env{'form.'.$formname};
4101: close($fh);
4102: if ($context eq 'existingfile') {
4103: my @info = stat($fullpath.'/'.$fname);
4104: return ($fullpath.'/'.$fname,$info[9]);
4105: } else {
4106: return $fullpath.'/'.$fname;
4107: }
4108: }
4109: if ($subdir eq 'scantron') {
4110: $fname = 'scantron_orig_'.$fname;
4111: } else {
4112: $fname="$subdir/$fname";
4113: }
4114: if ($context eq 'coursedoc') {
4115: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4116: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4117: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
4118: return &finishuserfileupload($docuname,$docudom,
4119: $formname,$fname,$parser,$allfiles,
4120: $codebase,$thumbwidth,$thumbheight,
4121: $resizewidth,$resizeheight,$context,$mimetype);
4122: } else {
4123: if ($env{'form.folder'}) {
4124: $fname=$env{'form.folder'}.'/'.$fname;
4125: }
4126: return &process_coursefile('uploaddoc',$docuname,$docudom,
4127: $fname,$formname,$parser,
4128: $allfiles,$codebase,$mimetype);
4129: }
4130: } elsif (defined($destuname)) {
4131: my $docuname=$destuname;
4132: my $docudom=$destudom;
4133: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
4134: $parser,$allfiles,$codebase,
4135: $thumbwidth,$thumbheight,
4136: $resizewidth,$resizeheight,$context,$mimetype);
4137: } else {
4138: my $docuname=$env{'user.name'};
4139: my $docudom=$env{'user.domain'};
4140: if ((exists($env{'form.group'})) || ($context eq 'syllabus')) {
4141: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4142: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4143: }
4144: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
4145: $parser,$allfiles,$codebase,
4146: $thumbwidth,$thumbheight,
4147: $resizewidth,$resizeheight,$context,$mimetype);
4148: }
4149: }
4150:
4151: sub finishuserfileupload {
4152: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
4153: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
4154: my $path=$docudom.'/'.$docuname.'/';
4155: my $filepath=$perlvar{'lonDocRoot'};
4156:
4157: my ($fnamepath,$file,$fetchthumb);
4158: $file=$fname;
4159: if ($fname=~m|/|) {
4160: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
4161: $path.=$fnamepath.'/';
4162: }
4163: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
4164: my $count;
4165: for ($count=4;$count<=$#parts;$count++) {
4166: $filepath.="/$parts[$count]";
4167: if ((-e $filepath)!=1) {
4168: mkdir($filepath,0777);
4169: }
4170: }
4171:
4172: # Save the file
4173: {
4174: if (!open(FH,'>',$filepath.'/'.$file)) {
4175: &logthis('Failed to create '.$filepath.'/'.$file);
4176: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
4177: return '/adm/notfound.html';
4178: }
4179: if ($context eq 'overwrite') {
4180: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
4181: my $target = $filepath.'/'.$file;
4182: if (-e $source) {
4183: my @info = stat($source);
4184: if ($info[9] eq $env{'form.timestamp'}) {
4185: unless (&File::Copy::move($source,$target)) {
4186: &logthis('Failed to overwrite '.$filepath.'/'.$file);
4187: return "Moving from $source failed";
4188: }
4189: } else {
4190: return "Temporary file: $source had unexpected date/time for last modification";
4191: }
4192: } else {
4193: return "Temporary file: $source missing";
4194: }
4195: } elsif (!print FH ($env{'form.'.$formname})) {
4196: &logthis('Failed to write to '.$filepath.'/'.$file);
4197: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
4198: return '/adm/notfound.html';
4199: }
4200: close(FH);
4201: if ($resizewidth && $resizeheight) {
4202: my $mm = new File::MMagic;
4203: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
4204: if ($mime_type =~ m{^image/}) {
4205: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
4206: }
4207: }
4208: }
4209: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
4210: if (ref($mimetype)) {
4211: if ($$mimetype eq '') {
4212: my $mm = new File::MMagic;
4213: my $type = $mm->checktype_filename($filepath.'/'.$file);
4214: $$mimetype = $type;
4215: }
4216: }
4217: }
4218: if (($context ne 'scantron') && ($parser eq 'parse')) {
4219: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
4220: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
4221: $allfiles,$codebase);
4222: unless ($parse_result eq 'ok') {
4223: &logthis('Failed to parse '.$filepath.$file.
4224: ' for embedded media: '.$parse_result);
4225: }
4226: }
4227: } elsif (($context eq 'scantron') && (ref($parser) eq 'HASH')) {
4228: my $format = $env{'form.scantron_format'};
4229: &bubblesheet_converter($docudom,$filepath.'/'.$file,$parser,$format);
4230: }
4231: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
4232: my $input = $filepath.'/'.$file;
4233: my $output = $filepath.'/'.'tn-'.$file;
4234: my $thumbsize = $thumbwidth.'x'.$thumbheight;
4235: my @args = ('convert','-sample',$thumbsize,$input,$output);
4236: system({$args[0]} @args);
4237: if (-e $filepath.'/'.'tn-'.$file) {
4238: $fetchthumb = 1;
4239: }
4240: }
4241:
4242: # Notify homeserver to grep it
4243: #
4244: my $docuhome=&homeserver($docuname,$docudom);
4245: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
4246: if ($fetchresult eq 'ok') {
4247: if ($fetchthumb) {
4248: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
4249: if ($thumbresult ne 'ok') {
4250: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
4251: $docuhome.': '.$thumbresult);
4252: }
4253: }
4254: #
4255: # Return the URL to it
4256: return '/uploaded/'.$path.$file;
4257: } else {
4258: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
4259: ': '.$fetchresult);
4260: return '/adm/notfound.html';
4261: }
4262: }
4263:
4264: sub extract_embedded_items {
4265: my ($fullpath,$allfiles,$codebase,$content) = @_;
4266: my @state = ();
4267: my (%lastids,%related,%shockwave,%flashvars);
4268: my %javafiles = (
4269: codebase => '',
4270: code => '',
4271: archive => ''
4272: );
4273: my %mediafiles = (
4274: src => '',
4275: movie => '',
4276: );
4277: my $p;
4278: if ($content) {
4279: $p = HTML::LCParser->new($content);
4280: } else {
4281: $p = HTML::LCParser->new($fullpath);
4282: }
4283: while (my $t=$p->get_token()) {
4284: if ($t->[0] eq 'S') {
4285: my ($tagname, $attr) = ($t->[1],$t->[2]);
4286: push(@state, $tagname);
4287: if (lc($tagname) eq 'allow') {
4288: &add_filetype($allfiles,$attr->{'src'},'src');
4289: }
4290: if (lc($tagname) eq 'img') {
4291: &add_filetype($allfiles,$attr->{'src'},'src');
4292: }
4293: if (lc($tagname) eq 'a') {
4294: unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) {
4295: &add_filetype($allfiles,$attr->{'href'},'href');
4296: }
4297: }
4298: if (lc($tagname) eq 'script') {
4299: my $src;
4300: if ($attr->{'archive'} =~ /\.jar$/i) {
4301: &add_filetype($allfiles,$attr->{'archive'},'archive');
4302: } else {
4303: if ($attr->{'src'} ne '') {
4304: $src = $attr->{'src'};
4305: &add_filetype($allfiles,$src,'src');
4306: }
4307: }
4308: my $text = $p->get_trimmed_text();
4309: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
4310: my @swfargs = split(/,/,$1);
4311: foreach my $item (@swfargs) {
4312: $item =~ s/["']//g;
4313: $item =~ s/^\s+//;
4314: $item =~ s/\s+$//;
4315: }
4316: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
4317: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
4318: push(@{$related{$swfargs[0]}},$swfargs[2]);
4319: } else {
4320: $related{$swfargs[0]} = [$swfargs[2]];
4321: }
4322: }
4323: }
4324: }
4325: if (lc($tagname) eq 'link') {
4326: if (lc($attr->{'rel'}) eq 'stylesheet') {
4327: &add_filetype($allfiles,$attr->{'href'},'href');
4328: }
4329: }
4330: if (lc($tagname) eq 'object' ||
4331: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
4332: foreach my $item (keys(%javafiles)) {
4333: $javafiles{$item} = '';
4334: }
4335: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
4336: $lastids{lc($tagname)} = $attr->{'id'};
4337: }
4338: }
4339: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
4340: my $name = lc($attr->{'name'});
4341: foreach my $item (keys(%javafiles)) {
4342: if ($name eq $item) {
4343: $javafiles{$item} = $attr->{'value'};
4344: last;
4345: }
4346: }
4347: my $pathfrom;
4348: foreach my $item (keys(%mediafiles)) {
4349: if ($name eq $item) {
4350: $pathfrom = $attr->{'value'};
4351: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
4352: &add_filetype($allfiles,$pathfrom,$name);
4353: last;
4354: }
4355: }
4356: if ($name eq 'flashvars') {
4357: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
4358: }
4359: if ($pathfrom ne '') {
4360: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
4361: $pathfrom);
4362: }
4363: }
4364: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
4365: foreach my $item (keys(%javafiles)) {
4366: if ($attr->{$item}) {
4367: $javafiles{$item} = $attr->{$item};
4368: last;
4369: }
4370: }
4371: foreach my $item (keys(%mediafiles)) {
4372: if ($attr->{$item}) {
4373: &add_filetype($allfiles,$attr->{$item},$item);
4374: last;
4375: }
4376: }
4377: if (lc($tagname) eq 'embed') {
4378: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
4379: &embedded_dependency($allfiles,\%related,$attr->{'name'},
4380: $attr->{'src'});
4381: }
4382: }
4383: }
4384: if (lc($tagname) eq 'iframe') {
4385: my $src = $attr->{'src'} ;
4386: if (($src ne '') && ($src !~ m{^(/|https?://)})) {
4387: &add_filetype($allfiles,$src,'src');
4388: } elsif ($src =~ m{^/}) {
4389: if ($env{'request.course.id'}) {
4390: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4391: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4392: my $url = &hreflocation('',$fullpath);
4393: if ($url =~ m{^/uploaded/$cdom/$cnum/docs/(\w+/\d+)/}) {
4394: my $relpath = $1;
4395: if ($src =~ m{^/uploaded/$cdom/$cnum/docs/\Q$relpath\E/(.+)$}) {
4396: &add_filetype($allfiles,$1,'src');
4397: }
4398: }
4399: }
4400: }
4401: }
4402: if ($t->[4] =~ m{/>$}) {
4403: pop(@state);
4404: }
4405: } elsif ($t->[0] eq 'E') {
4406: my ($tagname) = ($t->[1]);
4407: if ($javafiles{'codebase'} ne '') {
4408: $javafiles{'codebase'} .= '/';
4409: }
4410: if (lc($tagname) eq 'applet' ||
4411: lc($tagname) eq 'object' ||
4412: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
4413: ) {
4414: foreach my $item (keys(%javafiles)) {
4415: if ($item ne 'codebase' && $javafiles{$item} ne '') {
4416: my $file=$javafiles{'codebase'}.$javafiles{$item};
4417: &add_filetype($allfiles,$file,$item);
4418: }
4419: }
4420: }
4421: pop @state;
4422: }
4423: }
4424: foreach my $id (sort(keys(%flashvars))) {
4425: if ($shockwave{$id} ne '') {
4426: my @pairs = split(/\&/,$flashvars{$id});
4427: foreach my $pair (@pairs) {
4428: my ($key,$value) = split(/\=/,$pair);
4429: if ($key eq 'thumb') {
4430: &add_filetype($allfiles,$value,$key);
4431: } elsif ($key eq 'content') {
4432: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
4433: my ($ext) = ($value =~ /\.([^.]+)$/);
4434: if ($ext ne '') {
4435: &add_filetype($allfiles,$path.$value,$ext);
4436: }
4437: }
4438: }
4439: }
4440: }
4441: return 'ok';
4442: }
4443:
4444: sub add_filetype {
4445: my ($allfiles,$file,$type)=@_;
4446: if (exists($allfiles->{$file})) {
4447: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
4448: push(@{$allfiles->{$file}}, &escape($type));
4449: }
4450: } else {
4451: @{$allfiles->{$file}} = (&escape($type));
4452: }
4453: }
4454:
4455: sub embedded_dependency {
4456: my ($allfiles,$related,$identifier,$pathfrom) = @_;
4457: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
4458: if (($identifier ne '') &&
4459: (ref($related->{$identifier}) eq 'ARRAY') &&
4460: ($pathfrom ne '')) {
4461: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
4462: foreach my $dep (@{$related->{$identifier}}) {
4463: &add_filetype($allfiles,$path.$dep,'object');
4464: }
4465: }
4466: }
4467: return;
4468: }
4469:
4470: sub bubblesheet_converter {
4471: my ($cdom,$fullpath,$config,$format) = @_;
4472: if ((&domain($cdom) ne '') &&
4473: ($fullpath =~ m{^\Q$perlvar{'lonDocRoot'}/userfiles/$cdom/\E$match_courseid/scantron_orig}) &&
4474: (-e $fullpath) && (ref($config) eq 'HASH') && ($format ne '')) {
4475: my (%csvcols,%csvoptions);
4476: if (ref($config->{'fields'}) eq 'HASH') {
4477: %csvcols = %{$config->{'fields'}};
4478: }
4479: if (ref($config->{'options'}) eq 'HASH') {
4480: %csvoptions = %{$config->{'options'}};
4481: }
4482: my %csvbynum = reverse(%csvcols);
4483: my %scantronconf = &get_scantron_config($format,$cdom);
4484: if (keys(%scantronconf)) {
4485: my %bynum = (
4486: $scantronconf{CODEstart} => 'CODEstart',
4487: $scantronconf{IDstart} => 'IDstart',
4488: $scantronconf{PaperID} => 'PaperID',
4489: $scantronconf{FirstName} => 'FirstName',
4490: $scantronconf{LastName} => 'LastName',
4491: $scantronconf{Qstart} => 'Qstart',
4492: );
4493: my @ordered;
4494: foreach my $item (sort { $a <=> $b } keys(%bynum)) {
4495: push(@ordered,$bynum{$item});
4496: }
4497: my %mapstart = (
4498: CODEstart => 'CODE',
4499: IDstart => 'ID',
4500: PaperID => 'PaperID',
4501: FirstName => 'FirstName',
4502: LastName => 'LastName',
4503: Qstart => 'FirstQuestion',
4504: );
4505: my %maplength = (
4506: CODEstart => 'CODElength',
4507: IDstart => 'IDlength',
4508: PaperID => 'PaperIDlength',
4509: FirstName => 'FirstNamelength',
4510: LastName => 'LastNamelength',
4511: );
4512: if (open(my $fh,'<',$fullpath)) {
4513: my $output;
4514: my %lettdig = &letter_to_digits();
4515: my %diglett = reverse(%lettdig);
4516: my $numletts = scalar(keys(%lettdig));
4517: my $num = 0;
4518: while (my $line=<$fh>) {
4519: $num ++;
4520: next if (($num == 1) && ($csvoptions{'hdr'} == 1));
4521: $line =~ s{[\r\n]+$}{};
4522: my %found;
4523: my @values = split(/,/,$line);
4524: my ($qstart,$record);
4525: for (my $i=0; $i<@values; $i++) {
4526: if ((($qstart ne '') && ($i > $qstart)) ||
4527: ($csvbynum{$i} eq 'FirstQuestion')) {
4528: if ($values[$i] eq '') {
4529: $values[$i] = $scantronconf{'Qoff'};
4530: } elsif ($scantronconf{'Qon'} eq 'number') {
4531: if ($values[$i] =~ /^[A-Ja-j]$/) {
4532: $values[$i] = $lettdig{uc($values[$i])};
4533: }
4534: } elsif ($scantronconf{'Qon'} eq 'letter') {
4535: if ($values[$i] =~ /^[0-9]$/) {
4536: $values[$i] = $diglett{$values[$i]};
4537: }
4538: } else {
4539: if ($values[$i] =~ /^[0-9A-Ja-j]$/) {
4540: my $digit;
4541: if ($values[$i] =~ /^[A-Ja-j]$/) {
4542: $digit = $lettdig{uc($values[$i])}-1;
4543: if ($values[$i] eq 'J') {
4544: $digit += $numletts;
4545: }
4546: } elsif ($values[$i] =~ /^[0-9]$/) {
4547: $digit = $values[$i]-1;
4548: if ($values[$i] eq '0') {
4549: $digit += $numletts;
4550: }
4551: }
4552: my $qval='';
4553: for (my $j=0; $j<$scantronconf{'Qlength'}; $j++) {
4554: if ($j == $digit) {
4555: $qval .= $scantronconf{'Qon'};
4556: } else {
4557: $qval .= $scantronconf{'Qoff'};
4558: }
4559: }
4560: $values[$i] = $qval;
4561: }
4562: }
4563: if (length($values[$i]) > $scantronconf{'Qlength'}) {
4564: $values[$i] = substr($values[$i],0,$scantronconf{'Qlength'});
4565: }
4566: my $numblank = $scantronconf{'Qlength'} - length($values[$i]);
4567: if ($numblank > 0) {
4568: $values[$i] .= ($scantronconf{'Qoff'} x $numblank);
4569: }
4570: if ($csvbynum{$i} eq 'FirstQuestion') {
4571: $qstart = $i;
4572: $found{$csvbynum{$i}} = $values[$i];
4573: } else {
4574: $found{'FirstQuestion'} .= $values[$i];
4575: }
4576: } elsif (exists($csvbynum{$i})) {
4577: if ($csvoptions{'rem'}) {
4578: $values[$i] =~ s/^\s+//;
4579: }
4580: if (($csvbynum{$i} eq 'PaperID') && ($csvoptions{'pad'})) {
4581: while (length($values[$i]) < $scantronconf{$maplength{$csvbynum{$i}}}) {
4582: $values[$i] = '0'.$values[$i];
4583: }
4584: }
4585: $found{$csvbynum{$i}} = $values[$i];
4586: }
4587: }
4588: foreach my $item (@ordered) {
4589: my $currlength = 1+length($record);
4590: my $numspaces = $scantronconf{$item} - $currlength;
4591: if ($numspaces > 0) {
4592: $record .= (' ' x $numspaces);
4593: }
4594: if (($mapstart{$item} ne '') && (exists($found{$mapstart{$item}}))) {
4595: unless ($item eq 'Qstart') {
4596: if (length($found{$mapstart{$item}}) > $scantronconf{$maplength{$item}}) {
4597: $found{$mapstart{$item}} = substr($found{$mapstart{$item}},0,$scantronconf{$maplength{$item}});
4598: }
4599: }
4600: $record .= $found{$mapstart{$item}};
4601: }
4602: }
4603: $output .= "$record\n";
4604: }
4605: close($fh);
4606: if ($output) {
4607: if (open(my $fh,'>',$fullpath)) {
4608: print $fh $output;
4609: close($fh);
4610: }
4611: }
4612: }
4613: }
4614: return;
4615: }
4616: }
4617:
4618: sub letter_to_digits {
4619: my %lettdig = (
4620: A => 1,
4621: B => 2,
4622: C => 3,
4623: D => 4,
4624: E => 5,
4625: F => 6,
4626: G => 7,
4627: H => 8,
4628: I => 9,
4629: J => 0,
4630: );
4631: return %lettdig;
4632: }
4633:
4634: sub get_scantron_config {
4635: my ($which,$cdom) = @_;
4636: my @lines = &get_scantronformat_file($cdom);
4637: my %config;
4638: #FIXME probably should move to XML it has already gotten a bit much now
4639: foreach my $line (@lines) {
4640: my ($name,$descrip)=split(/:/,$line);
4641: if ($name ne $which ) { next; }
4642: chomp($line);
4643: my @config=split(/:/,$line);
4644: $config{'name'}=$config[0];
4645: $config{'description'}=$config[1];
4646: $config{'CODElocation'}=$config[2];
4647: $config{'CODEstart'}=$config[3];
4648: $config{'CODElength'}=$config[4];
4649: $config{'IDstart'}=$config[5];
4650: $config{'IDlength'}=$config[6];
4651: $config{'Qstart'}=$config[7];
4652: $config{'Qlength'}=$config[8];
4653: $config{'Qoff'}=$config[9];
4654: $config{'Qon'}=$config[10];
4655: $config{'PaperID'}=$config[11];
4656: $config{'PaperIDlength'}=$config[12];
4657: $config{'FirstName'}=$config[13];
4658: $config{'FirstNamelength'}=$config[14];
4659: $config{'LastName'}=$config[15];
4660: $config{'LastNamelength'}=$config[16];
4661: $config{'BubblesPerRow'}=$config[17];
4662: last;
4663: }
4664: return %config;
4665: }
4666:
4667: sub get_scantronformat_file {
4668: my ($cdom) = @_;
4669: if ($cdom eq '') {
4670: $cdom= $env{'course.'.$env{'request.course.id'}.'.domain'};
4671: }
4672: my %domconfig = &get_dom('configuration',['scantron'],$cdom);
4673: my $gottab = 0;
4674: my @lines;
4675: if (ref($domconfig{'scantron'}) eq 'HASH') {
4676: if ($domconfig{'scantron'}{'scantronformat'} ne '') {
4677: my $formatfile = &getfile($perlvar{'lonDocRoot'}.$domconfig{'scantron'}{'scantronformat'});
4678: if ($formatfile ne '-1') {
4679: @lines = split("\n",$formatfile,-1);
4680: $gottab = 1;
4681: }
4682: }
4683: }
4684: if (!$gottab) {
4685: my $confname = $cdom.'-domainconfig';
4686: my $default = $perlvar{'lonDocRoot'}.'/res/'.$cdom.'/'.$confname.'/default.tab';
4687: my $formatfile = &getfile($default);
4688: if ($formatfile ne '-1') {
4689: @lines = split("\n",$formatfile,-1);
4690: $gottab = 1;
4691: }
4692: }
4693: if (!$gottab) {
4694: my @domains = ¤t_machine_domains();
4695: if (grep(/^\Q$cdom\E$/,@domains)) {
4696: if (open(my $fh,'<',$perlvar{'lonTabDir'}.'/scantronformat.tab')) {
4697: @lines = <$fh>;
4698: close($fh);
4699: }
4700: } else {
4701: if (open(my $fh,'<',$perlvar{'lonTabDir'}.'/default_scantronformat.tab')) {
4702: @lines = <$fh>;
4703: close($fh);
4704: }
4705: }
4706: }
4707: return @lines;
4708: }
4709:
4710: sub removeuploadedurl {
4711: my ($url)=@_;
4712: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
4713: return &removeuserfile($uname,$udom,$fname);
4714: }
4715:
4716: sub removeuserfile {
4717: my ($docuname,$docudom,$fname)=@_;
4718: my $home=&homeserver($docuname,$docudom);
4719: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
4720: if ($result eq 'ok') {
4721: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
4722: my $metafile = $fname.'.meta';
4723: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
4724: my $url = "/uploaded/$docudom/$docuname/$fname";
4725: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
4726: my $sqlresult =
4727: &update_portfolio_table($docuname,$docudom,$file,
4728: 'portfolio_metadata',$group,
4729: 'delete');
4730: }
4731: }
4732: return $result;
4733: }
4734:
4735: sub mkdiruserfile {
4736: my ($docuname,$docudom,$dir)=@_;
4737: my $home=&homeserver($docuname,$docudom);
4738: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
4739: }
4740:
4741: sub renameuserfile {
4742: my ($docuname,$docudom,$old,$new)=@_;
4743: my $home=&homeserver($docuname,$docudom);
4744: my $result = &reply("renameuserfile:$docudom:$docuname:".
4745: &escape("$old").':'.&escape("$new"),$home);
4746: if ($result eq 'ok') {
4747: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
4748: my $oldmeta = $old.'.meta';
4749: my $newmeta = $new.'.meta';
4750: my $metaresult =
4751: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
4752: my $url = "/uploaded/$docudom/$docuname/$old";
4753: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
4754: my $sqlresult =
4755: &update_portfolio_table($docuname,$docudom,$file,
4756: 'portfolio_metadata',$group,
4757: 'delete');
4758: }
4759: }
4760: return $result;
4761: }
4762:
4763: # ------------------------------------------------------------------------- Log
4764:
4765: sub log {
4766: my ($dom,$nam,$hom,$what)=@_;
4767: return critical("log:$dom:$nam:$what",$hom);
4768: }
4769:
4770: # ------------------------------------------------------------------ Course Log
4771: #
4772: # This routine flushes several buffers of non-mission-critical nature
4773: #
4774:
4775: sub flushcourselogs {
4776: &logthis('Flushing log buffers');
4777: #
4778: # course logs
4779: # This is a log of all transactions in a course, which can be used
4780: # for data mining purposes
4781: #
4782: # It also collects the courseid database, which lists last transaction
4783: # times and course titles for all courseids
4784: #
4785: my %courseidbuffer=();
4786: foreach my $crsid (keys(%courselogs)) {
4787: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
4788: &escape($courselogs{$crsid}),
4789: $coursehombuf{$crsid}) eq 'ok') {
4790: delete $courselogs{$crsid};
4791: } else {
4792: &logthis('Failed to flush log buffer for '.$crsid);
4793: if (length($courselogs{$crsid})>40000) {
4794: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
4795: " exceeded maximum size, deleting.</font>");
4796: delete $courselogs{$crsid};
4797: }
4798: }
4799: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
4800: 'description' => $coursedescrbuf{$crsid},
4801: 'inst_code' => $courseinstcodebuf{$crsid},
4802: 'type' => $coursetypebuf{$crsid},
4803: 'owner' => $courseownerbuf{$crsid},
4804: };
4805: }
4806: #
4807: # Write course id database (reverse lookup) to homeserver of courses
4808: # Is used in pickcourse
4809: #
4810: foreach my $crs_home (keys(%courseidbuffer)) {
4811: my $response = &courseidput(&host_domain($crs_home),
4812: $courseidbuffer{$crs_home},
4813: $crs_home,'timeonly');
4814: }
4815: #
4816: # File accesses
4817: # Writes to the dynamic metadata of resources to get hit counts, etc.
4818: #
4819: foreach my $entry (keys(%accesshash)) {
4820: if ($entry =~ /___count$/) {
4821: my ($dom,$name);
4822: ($dom,$name,undef)=
4823: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
4824: if (! defined($dom) || $dom eq '' ||
4825: ! defined($name) || $name eq '') {
4826: my $cid = $env{'request.course.id'};
4827: $dom = $env{'request.'.$cid.'.domain'};
4828: $name = $env{'request.'.$cid.'.num'};
4829: }
4830: my $value = $accesshash{$entry};
4831: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
4832: my %temphash=($url => $value);
4833: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
4834: if ($result eq 'ok') {
4835: delete $accesshash{$entry};
4836: }
4837: } else {
4838: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
4839: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
4840: my %temphash=($entry => $accesshash{$entry});
4841: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
4842: delete $accesshash{$entry};
4843: }
4844: }
4845: }
4846: #
4847: # Roles
4848: # Reverse lookup of user roles for course faculty/staff and co-authorship
4849: #
4850: foreach my $entry (keys(%userrolehash)) {
4851: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
4852: split(/\:/,$entry);
4853: if (&Apache::lonnet::put('nohist_userroles',
4854: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
4855: $rudom,$runame) eq 'ok') {
4856: delete $userrolehash{$entry};
4857: }
4858: }
4859: #
4860: # Reverse lookup of domain roles (dc, ad, li, sc, dh, da, au)
4861: #
4862: my %domrolebuffer = ();
4863: foreach my $entry (keys(%domainrolehash)) {
4864: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
4865: if ($domrolebuffer{$rudom}) {
4866: $domrolebuffer{$rudom}.='&'.&escape($entry).
4867: '='.&escape($domainrolehash{$entry});
4868: } else {
4869: $domrolebuffer{$rudom}.=&escape($entry).
4870: '='.&escape($domainrolehash{$entry});
4871: }
4872: delete $domainrolehash{$entry};
4873: }
4874: foreach my $dom (keys(%domrolebuffer)) {
4875: my %servers;
4876: if (defined(&domain($dom,'primary'))) {
4877: my $primary=&domain($dom,'primary');
4878: my $hostname=&hostname($primary);
4879: $servers{$primary} = $hostname;
4880: } else {
4881: %servers = &get_servers($dom,'library');
4882: }
4883: foreach my $tryserver (keys(%servers)) {
4884: if (&reply('domroleput:'.$dom.':'.
4885: $domrolebuffer{$dom},$tryserver) eq 'ok') {
4886: last;
4887: } else {
4888: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
4889: }
4890: }
4891: }
4892: $dumpcount++;
4893: }
4894:
4895: sub courselog {
4896: my $what=shift;
4897: $what=time.':'.$what;
4898: unless ($env{'request.course.id'}) { return ''; }
4899: $coursedombuf{$env{'request.course.id'}}=
4900: $env{'course.'.$env{'request.course.id'}.'.domain'};
4901: $coursenumbuf{$env{'request.course.id'}}=
4902: $env{'course.'.$env{'request.course.id'}.'.num'};
4903: $coursehombuf{$env{'request.course.id'}}=
4904: $env{'course.'.$env{'request.course.id'}.'.home'};
4905: $coursedescrbuf{$env{'request.course.id'}}=
4906: $env{'course.'.$env{'request.course.id'}.'.description'};
4907: $courseinstcodebuf{$env{'request.course.id'}}=
4908: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
4909: $courseownerbuf{$env{'request.course.id'}}=
4910: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
4911: $coursetypebuf{$env{'request.course.id'}}=
4912: $env{'course.'.$env{'request.course.id'}.'.type'};
4913: if (defined $courselogs{$env{'request.course.id'}}) {
4914: $courselogs{$env{'request.course.id'}}.='&'.$what;
4915: } else {
4916: $courselogs{$env{'request.course.id'}}.=$what;
4917: }
4918: if (length($courselogs{$env{'request.course.id'}})>4048) {
4919: &flushcourselogs();
4920: }
4921: }
4922:
4923: sub courseacclog {
4924: my $fnsymb=shift;
4925: unless ($env{'request.course.id'}) { return ''; }
4926: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
4927: if ($fnsymb=~/$LONCAPA::assess_re/) {
4928: $what.=':POST';
4929: # FIXME: Probably ought to escape things....
4930: foreach my $key (keys(%env)) {
4931: if ($key=~/^form\.(.*)/) {
4932: my $formitem = $1;
4933: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
4934: $what.=':'.$formitem.'='.$env{$key};
4935: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
4936: $what.=':'.$formitem.'='.$env{$key};
4937: }
4938: }
4939: }
4940: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
4941: # FIXME: We should not be depending on a form parameter that someone
4942: # editing lonsearchcat.pm might change in the future.
4943: if ($env{'form.phase'} eq 'course_search') {
4944: $what.= ':POST';
4945: # FIXME: Probably ought to escape things....
4946: foreach my $element ('courseexp','crsfulltext','crsrelated',
4947: 'crsdiscuss') {
4948: $what.=':'.$element.'='.$env{'form.'.$element};
4949: }
4950: }
4951: }
4952: &courselog($what);
4953: }
4954:
4955: sub countacc {
4956: my $url=&declutter(shift);
4957: return if (! defined($url) || $url eq '');
4958: unless ($env{'request.course.id'}) { return ''; }
4959: #
4960: # Mark that this url was used in this course
4961: #
4962: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
4963: #
4964: # Increase the access count for this resource in this child process
4965: #
4966: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
4967: $accesshash{$key}++;
4968: }
4969:
4970: sub linklog {
4971: my ($from,$to)=@_;
4972: $from=&declutter($from);
4973: $to=&declutter($to);
4974: $accesshash{$from.'___'.$to.'___comefrom'}=1;
4975: $accesshash{$to.'___'.$from.'___goto'}=1;
4976: }
4977:
4978: sub statslog {
4979: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
4980: if ($users<2) { return; }
4981: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
4982: 'course' => $env{'request.course.id'},
4983: 'sections' => '"all"',
4984: 'num_students' => $users,
4985: 'part' => $part,
4986: 'symb' => $symb,
4987: 'mean_tries' => $av_attempts,
4988: 'deg_of_diff' => $degdiff});
4989: foreach my $key (keys(%dynstore)) {
4990: $accesshash{$key}=$dynstore{$key};
4991: }
4992: }
4993:
4994: sub userrolelog {
4995: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
4996: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
4997: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
4998: $userrolehash
4999: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
5000: =$tend.':'.$tstart;
5001: }
5002: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
5003: $userrolehash
5004: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
5005: =$tend.':'.$tstart;
5006: }
5007: if ($trole =~ /^(dc|ad|li|au|dg|sc|dh|da)/ ) {
5008: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
5009: $domainrolehash
5010: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
5011: = $tend.':'.$tstart;
5012: }
5013: }
5014:
5015: sub courserolelog {
5016: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
5017: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
5018: my $cdom = $1;
5019: my $cnum = $2;
5020: my $sec = $3;
5021: my $namespace = 'rolelog';
5022: my %storehash = (
5023: role => $trole,
5024: start => $tstart,
5025: end => $tend,
5026: selfenroll => $selfenroll,
5027: context => $context,
5028: );
5029: if ($trole eq 'gr') {
5030: $namespace = 'groupslog';
5031: $storehash{'group'} = $sec;
5032: } else {
5033: $storehash{'section'} = $sec;
5034: }
5035: &write_log('course',$namespace,\%storehash,$delflag,$username,
5036: $domain,$cnum,$cdom);
5037: if (($trole ne 'st') || ($sec ne '')) {
5038: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
5039: }
5040: }
5041: return;
5042: }
5043:
5044: sub domainrolelog {
5045: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
5046: if ($area =~ m{^/($match_domain)/$}) {
5047: my $cdom = $1;
5048: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
5049: my $namespace = 'rolelog';
5050: my %storehash = (
5051: role => $trole,
5052: start => $tstart,
5053: end => $tend,
5054: context => $context,
5055: );
5056: &write_log('domain',$namespace,\%storehash,$delflag,$username,
5057: $domain,$domconfiguser,$cdom);
5058: }
5059: return;
5060:
5061: }
5062:
5063: sub coauthorrolelog {
5064: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
5065: if ($area =~ m{^/($match_domain)/($match_username)$}) {
5066: my $audom = $1;
5067: my $auname = $2;
5068: my $namespace = 'rolelog';
5069: my %storehash = (
5070: role => $trole,
5071: start => $tstart,
5072: end => $tend,
5073: context => $context,
5074: );
5075: &write_log('author',$namespace,\%storehash,$delflag,$username,
5076: $domain,$auname,$audom);
5077: }
5078: return;
5079: }
5080:
5081: sub get_course_adv_roles {
5082: my ($cid,$codes) = @_;
5083: $cid=$env{'request.course.id'} unless (defined($cid));
5084: my %coursehash=&coursedescription($cid);
5085: my $crstype = &Apache::loncommon::course_type($cid);
5086: my %nothide=();
5087: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
5088: if ($user !~ /:/) {
5089: $nothide{join(':',split(/[\@]/,$user))}=1;
5090: } else {
5091: $nothide{$user}=1;
5092: }
5093: }
5094: my @possdoms = ($coursehash{'domain'});
5095: if ($coursehash{'checkforpriv'}) {
5096: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
5097: }
5098: my %returnhash=();
5099: my %dumphash=
5100: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
5101: my $now=time;
5102: my %privileged;
5103: foreach my $entry (keys(%dumphash)) {
5104: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
5105: if (($tstart) && ($tstart<0)) { next; }
5106: if (($tend) && ($tend<$now)) { next; }
5107: if (($tstart) && ($now<$tstart)) { next; }
5108: my ($role,$username,$domain,$section)=split(/\:/,$entry);
5109: if ($username eq '' || $domain eq '') { next; }
5110: if ((&privileged($username,$domain,\@possdoms)) &&
5111: (!$nothide{$username.':'.$domain})) { next; }
5112: if ($role eq 'cr') { next; }
5113: if ($codes) {
5114: if ($section) { $role .= ':'.$section; }
5115: if ($returnhash{$role}) {
5116: $returnhash{$role}.=','.$username.':'.$domain;
5117: } else {
5118: $returnhash{$role}=$username.':'.$domain;
5119: }
5120: } else {
5121: my $key=&plaintext($role,$crstype);
5122: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
5123: if ($returnhash{$key}) {
5124: $returnhash{$key}.=','.$username.':'.$domain;
5125: } else {
5126: $returnhash{$key}=$username.':'.$domain;
5127: }
5128: }
5129: }
5130: return %returnhash;
5131: }
5132:
5133: sub get_my_roles {
5134: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
5135: unless (defined($uname)) { $uname=$env{'user.name'}; }
5136: unless (defined($udom)) { $udom=$env{'user.domain'}; }
5137: my (%dumphash,%nothide);
5138: if ($context eq 'userroles') {
5139: %dumphash = &dump('roles',$udom,$uname);
5140: } else {
5141: %dumphash = &dump('nohist_userroles',$udom,$uname);
5142: if ($hidepriv) {
5143: my %coursehash=&coursedescription($udom.'_'.$uname);
5144: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
5145: if ($user !~ /:/) {
5146: $nothide{join(':',split(/[\@]/,$user))} = 1;
5147: } else {
5148: $nothide{$user} = 1;
5149: }
5150: }
5151: }
5152: }
5153: my %returnhash=();
5154: my $now=time;
5155: my %privileged;
5156: foreach my $entry (keys(%dumphash)) {
5157: my ($role,$tend,$tstart);
5158: if ($context eq 'userroles') {
5159: next if ($entry =~ /^rolesdef/);
5160: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
5161: } else {
5162: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
5163: }
5164: if (($tstart) && ($tstart<0)) { next; }
5165: my $status = 'active';
5166: if (($tend) && ($tend<=$now)) {
5167: $status = 'previous';
5168: }
5169: if (($tstart) && ($now<$tstart)) {
5170: $status = 'future';
5171: }
5172: if (ref($types) eq 'ARRAY') {
5173: if (!grep(/^\Q$status\E$/,@{$types})) {
5174: next;
5175: }
5176: } else {
5177: if ($status ne 'active') {
5178: next;
5179: }
5180: }
5181: my ($rolecode,$username,$domain,$section,$area);
5182: if ($context eq 'userroles') {
5183: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
5184: (undef,$domain,$username,$section) = split(/\//,$area);
5185: } else {
5186: ($role,$username,$domain,$section) = split(/\:/,$entry);
5187: }
5188: if (ref($roledoms) eq 'ARRAY') {
5189: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
5190: next;
5191: }
5192: }
5193: if (ref($roles) eq 'ARRAY') {
5194: if (!grep(/^\Q$role\E$/,@{$roles})) {
5195: if ($role =~ /^cr\//) {
5196: if (!grep(/^cr$/,@{$roles})) {
5197: next;
5198: }
5199: } elsif ($role =~ /^gr\//) {
5200: if (!grep(/^gr$/,@{$roles})) {
5201: next;
5202: }
5203: } else {
5204: next;
5205: }
5206: }
5207: }
5208: if ($hidepriv) {
5209: my @privroles = ('dc','su');
5210: if ($context eq 'userroles') {
5211: next if (grep(/^\Q$role\E$/,@privroles));
5212: } else {
5213: my $possdoms = [$domain];
5214: if (ref($roledoms) eq 'ARRAY') {
5215: push(@{$possdoms},@{$roledoms});
5216: }
5217: if (&privileged($username,$domain,$possdoms,\@privroles)) {
5218: if (!$nothide{$username.':'.$domain}) {
5219: next;
5220: }
5221: }
5222: }
5223: }
5224: if ($withsec) {
5225: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
5226: $tstart.':'.$tend;
5227: } else {
5228: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
5229: }
5230: }
5231: return %returnhash;
5232: }
5233:
5234: sub get_all_adhocroles {
5235: my ($dom) = @_;
5236: my @roles_by_num = ();
5237: my %domdefaults = &get_domain_defaults($dom);
5238: my (%description,%access_in_dom,%access_info);
5239: if (ref($domdefaults{'adhocroles'}) eq 'HASH') {
5240: my $count = 0;
5241: my %domcurrent = %{$domdefaults{'adhocroles'}};
5242: my %ordered;
5243: foreach my $role (sort(keys(%domcurrent))) {
5244: my ($order,$desc,$access_in_dom);
5245: if (ref($domcurrent{$role}) eq 'HASH') {
5246: $order = $domcurrent{$role}{'order'};
5247: $desc = $domcurrent{$role}{'desc'};
5248: $access_in_dom{$role} = $domcurrent{$role}{'access'};
5249: $access_info{$role} = $domcurrent{$role}{$access_in_dom{$role}};
5250: }
5251: if ($order eq '') {
5252: $order = $count;
5253: }
5254: $ordered{$order} = $role;
5255: if ($desc ne '') {
5256: $description{$role} = $desc;
5257: } else {
5258: $description{$role}= $role;
5259: }
5260: $count++;
5261: }
5262: foreach my $item (sort {$a <=> $b } (keys(%ordered))) {
5263: push(@roles_by_num,$ordered{$item});
5264: }
5265: }
5266: return (\@roles_by_num,\%description,\%access_in_dom,\%access_info);
5267: }
5268:
5269: sub get_my_adhocroles {
5270: my ($cid,$checkreg) = @_;
5271: my ($cdom,$cnum,%info,@possroles,$description,$roles_by_num);
5272: if ($env{'request.course.id'} eq $cid) {
5273: $cdom = $env{'course.'.$cid.'.domain'};
5274: $cnum = $env{'course.'.$cid.'.num'};
5275: $info{'internal.coursecode'} = $env{'course.'.$cid.'.internal.coursecode'};
5276: } elsif ($cid =~ /^($match_domain)_($match_courseid)$/) {
5277: $cdom = $1;
5278: $cnum = $2;
5279: %info = &Apache::lonnet::get('environment',['internal.coursecode'],
5280: $cdom,$cnum);
5281: }
5282: if (($info{'internal.coursecode'} ne '') && ($checkreg)) {
5283: my $user = $env{'user.name'}.':'.$env{'user.domain'};
5284: my %rosterhash = &get('classlist',[$user],$cdom,$cnum);
5285: if ($rosterhash{$user} ne '') {
5286: my $type = (split(/:/,$rosterhash{$user}))[5];
5287: return ([],{}) if ($type eq 'auto');
5288: }
5289: }
5290: if (($cdom ne '') && ($cnum ne '')) {
5291: if (($env{"user.role.dh./$cdom/"}) || ($env{"user.role.da./$cdom/"})) {
5292: my $then=$env{'user.login.time'};
5293: my $update=$env{'user.update.time'};
5294: if (!$update) {
5295: $update = $then;
5296: }
5297: my @liveroles;
5298: foreach my $role ('dh','da') {
5299: if ($env{"user.role.$role./$cdom/"}) {
5300: my ($tstart,$tend)=split(/\./,$env{"user.role.$role./$cdom/"});
5301: my $limit = $update;
5302: if ($env{'request.role'} eq "$role./$cdom/") {
5303: $limit = $then;
5304: }
5305: my $activerole = 1;
5306: if ($tstart && $tstart>$limit) { $activerole = 0; }
5307: if ($tend && $tend <$limit) { $activerole = 0; }
5308: if ($activerole) {
5309: push(@liveroles,$role);
5310: }
5311: }
5312: }
5313: if (@liveroles) {
5314: if (&homeserver($cnum,$cdom) ne 'no_host') {
5315: my ($accessref,$accessinfo,%access_in_dom);
5316: ($roles_by_num,$description,$accessref,$accessinfo) = &get_all_adhocroles($cdom);
5317: if (ref($roles_by_num) eq 'ARRAY') {
5318: if (@{$roles_by_num}) {
5319: my %settings;
5320: if ($env{'request.course.id'} eq $cid) {
5321: foreach my $envkey (keys(%env)) {
5322: if ($envkey =~ /^\Qcourse.$cid.\E(internal\.adhoc.+)$/) {
5323: $settings{$1} = $env{$envkey};
5324: }
5325: }
5326: } else {
5327: %settings = &dump('environment',$cdom,$cnum,'internal\.adhoc');
5328: }
5329: my %setincrs;
5330: if ($settings{'internal.adhocaccess'}) {
5331: map { $setincrs{$_} = 1; } split(/,/,$settings{'internal.adhocaccess'});
5332: }
5333: my @statuses;
5334: if ($env{'environment.inststatus'}) {
5335: @statuses = split(/,/,$env{'environment.inststatus'});
5336: }
5337: my $user = $env{'user.name'}.':'.$env{'user.domain'};
5338: if (ref($accessref) eq 'HASH') {
5339: %access_in_dom = %{$accessref};
5340: }
5341: foreach my $role (@{$roles_by_num}) {
5342: my ($curraccess,@okstatus,@personnel);
5343: if ($setincrs{$role}) {
5344: ($curraccess,my $rest) = split(/=/,$settings{'internal.adhoc.'.$role});
5345: if ($curraccess eq 'status') {
5346: @okstatus = split(/\&/,$rest);
5347: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5348: @personnel = split(/\&/,$rest);
5349: }
5350: } else {
5351: $curraccess = $access_in_dom{$role};
5352: if (ref($accessinfo) eq 'HASH') {
5353: if ($curraccess eq 'status') {
5354: if (ref($accessinfo->{$role}) eq 'ARRAY') {
5355: @okstatus = @{$accessinfo->{$role}};
5356: }
5357: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5358: if (ref($accessinfo->{$role}) eq 'ARRAY') {
5359: @personnel = @{$accessinfo->{$role}};
5360: }
5361: }
5362: }
5363: }
5364: if ($curraccess eq 'none') {
5365: next;
5366: } elsif ($curraccess eq 'all') {
5367: push(@possroles,$role);
5368: } elsif ($curraccess eq 'dh') {
5369: if (grep(/^dh$/,@liveroles)) {
5370: push(@possroles,$role);
5371: } else {
5372: next;
5373: }
5374: } elsif ($curraccess eq 'da') {
5375: if (grep(/^da$/,@liveroles)) {
5376: push(@possroles,$role);
5377: } else {
5378: next;
5379: }
5380: } elsif ($curraccess eq 'status') {
5381: if (@okstatus) {
5382: if (!@statuses) {
5383: if (grep(/^default$/,@okstatus)) {
5384: push(@possroles,$role);
5385: }
5386: } else {
5387: foreach my $status (@okstatus) {
5388: if (grep(/^\Q$status\E$/,@statuses)) {
5389: push(@possroles,$role);
5390: last;
5391: }
5392: }
5393: }
5394: }
5395: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5396: if (grep(/^\Q$user\E$/,@personnel)) {
5397: if ($curraccess eq 'exc') {
5398: push(@possroles,$role);
5399: }
5400: } elsif ($curraccess eq 'inc') {
5401: push(@possroles,$role);
5402: }
5403: }
5404: }
5405: }
5406: }
5407: }
5408: }
5409: }
5410: }
5411: unless (ref($description) eq 'HASH') {
5412: if (ref($roles_by_num) eq 'ARRAY') {
5413: my %desc;
5414: map { $desc{$_} = $_; } (@{$roles_by_num});
5415: $description = \%desc;
5416: } else {
5417: $description = {};
5418: }
5419: }
5420: return (\@possroles,$description);
5421: }
5422:
5423: # ----------------------------------------------------- Frontpage Announcements
5424: #
5425: #
5426:
5427: sub postannounce {
5428: my ($server,$text)=@_;
5429: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
5430: unless ($text=~/\w/) { $text=''; }
5431: return &reply('setannounce:'.&escape($text),$server);
5432: }
5433:
5434: sub getannounce {
5435:
5436: if (open(my $fh,"<",$perlvar{'lonDocRoot'}.'/announcement.txt')) {
5437: my $announcement='';
5438: while (my $line = <$fh>) { $announcement .= $line; }
5439: close($fh);
5440: if ($announcement=~/\w/) {
5441: return
5442: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
5443: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
5444: } else {
5445: return '';
5446: }
5447: } else {
5448: return '';
5449: }
5450: }
5451:
5452: # ---------------------------------------------------------- Course ID routines
5453: # Deal with domain's nohist_courseid.db files
5454: #
5455:
5456: sub courseidput {
5457: my ($domain,$storehash,$coursehome,$caller) = @_;
5458: return unless (ref($storehash) eq 'HASH');
5459: my $outcome;
5460: if ($caller eq 'timeonly') {
5461: my $cids = '';
5462: foreach my $item (keys(%$storehash)) {
5463: $cids.=&escape($item).'&';
5464: }
5465: $cids=~s/\&$//;
5466: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
5467: $coursehome);
5468: } else {
5469: my $items = '';
5470: foreach my $item (keys(%$storehash)) {
5471: $items.= &escape($item).'='.
5472: &freeze_escape($$storehash{$item}).'&';
5473: }
5474: $items=~s/\&$//;
5475: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
5476: $coursehome);
5477: }
5478: if ($outcome eq 'unknown_cmd') {
5479: my $what;
5480: foreach my $cid (keys(%$storehash)) {
5481: $what .= &escape($cid).'=';
5482: foreach my $item ('description','inst_code','owner','type') {
5483: $what .= &escape($storehash->{$cid}{$item}).':';
5484: }
5485: $what =~ s/\:$/&/;
5486: }
5487: $what =~ s/\&$//;
5488: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
5489: } else {
5490: return $outcome;
5491: }
5492: }
5493:
5494: sub courseiddump {
5495: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
5496: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
5497: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
5498: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner,
5499: $hasuniquecode,$reqcrsdom,$reqinstcode)=@_;
5500: my $as_hash = 1;
5501: my %returnhash;
5502: if (!$domfilter) { $domfilter=''; }
5503: my %libserv = &all_library();
5504: foreach my $tryserver (keys(%libserv)) {
5505: if ( ( $hostidflag == 1
5506: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
5507: || (!defined($hostidflag)) ) {
5508:
5509: if (($domfilter eq '') ||
5510: (&host_domain($tryserver) eq $domfilter)) {
5511: my $rep;
5512: if (grep { $_ eq $tryserver } current_machine_ids()) {
5513: $rep = LONCAPA::Lond::dump_course_id_handler(
5514: join(":", (&host_domain($tryserver), $sincefilter,
5515: &escape($descfilter), &escape($instcodefilter),
5516: &escape($ownerfilter), &escape($coursefilter),
5517: &escape($typefilter), &escape($regexp_ok),
5518: $as_hash, &escape($selfenrollonly),
5519: &escape($catfilter), $showhidden, $caller,
5520: &escape($cloner), &escape($cc_clone), $cloneonly,
5521: &escape($createdbefore), &escape($createdafter),
5522: &escape($creationcontext),$domcloner,$hasuniquecode,
5523: $reqcrsdom,&escape($reqinstcode))));
5524: } else {
5525: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
5526: $sincefilter.':'.&escape($descfilter).':'.
5527: &escape($instcodefilter).':'.&escape($ownerfilter).
5528: ':'.&escape($coursefilter).':'.&escape($typefilter).
5529: ':'.&escape($regexp_ok).':'.$as_hash.':'.
5530: &escape($selfenrollonly).':'.&escape($catfilter).':'.
5531: $showhidden.':'.$caller.':'.&escape($cloner).':'.
5532: &escape($cc_clone).':'.$cloneonly.':'.
5533: &escape($createdbefore).':'.&escape($createdafter).':'.
5534: &escape($creationcontext).':'.$domcloner.':'.$hasuniquecode.
5535: ':'.$reqcrsdom.':'.&escape($reqinstcode),$tryserver);
5536: }
5537:
5538: my @pairs=split(/\&/,$rep);
5539: foreach my $item (@pairs) {
5540: my ($key,$value)=split(/\=/,$item,2);
5541: $key = &unescape($key);
5542: next if ($key =~ /^error: 2 /);
5543: my $result = &thaw_unescape($value);
5544: if (ref($result) eq 'HASH') {
5545: $returnhash{$key}=$result;
5546: } else {
5547: my @responses = split(/:/,$value);
5548: my @items = ('description','inst_code','owner','type');
5549: for (my $i=0; $i<@responses; $i++) {
5550: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
5551: }
5552: }
5553: }
5554: }
5555: }
5556: }
5557: return %returnhash;
5558: }
5559:
5560: sub courselastaccess {
5561: my ($cdom,$cnum,$hostidref) = @_;
5562: my %returnhash;
5563: if ($cdom && $cnum) {
5564: my $chome = &homeserver($cnum,$cdom);
5565: if ($chome ne 'no_host') {
5566: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
5567: &extract_lastaccess(\%returnhash,$rep);
5568: }
5569: } else {
5570: if (!$cdom) { $cdom=''; }
5571: my %libserv = &all_library();
5572: foreach my $tryserver (keys(%libserv)) {
5573: if (ref($hostidref) eq 'ARRAY') {
5574: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
5575: }
5576: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
5577: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
5578: &extract_lastaccess(\%returnhash,$rep);
5579: }
5580: }
5581: }
5582: return %returnhash;
5583: }
5584:
5585: sub extract_lastaccess {
5586: my ($returnhash,$rep) = @_;
5587: if (ref($returnhash) eq 'HASH') {
5588: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
5589: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
5590: $rep eq '') {
5591: my @pairs=split(/\&/,$rep);
5592: foreach my $item (@pairs) {
5593: my ($key,$value)=split(/\=/,$item,2);
5594: $key = &unescape($key);
5595: next if ($key =~ /^error: 2 /);
5596: $returnhash->{$key} = &thaw_unescape($value);
5597: }
5598: }
5599: }
5600: return;
5601: }
5602:
5603: # ---------------------------------------------------------- DC e-mail
5604:
5605: sub dcmailput {
5606: my ($domain,$msgid,$message,$server)=@_;
5607: my $status = &Apache::lonnet::critical(
5608: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
5609: &escape($message),$server);
5610: return $status;
5611: }
5612:
5613: sub dcmaildump {
5614: my ($dom,$startdate,$enddate,$senders) = @_;
5615: my %returnhash=();
5616:
5617: if (defined(&domain($dom,'primary'))) {
5618: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
5619: &escape($enddate).':';
5620: my @esc_senders=map { &escape($_)} @$senders;
5621: $cmd.=&escape(join('&',@esc_senders));
5622: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
5623: my ($key,$value) = split(/\=/,$line,2);
5624: if (($key) && ($value)) {
5625: $returnhash{&unescape($key)} = &unescape($value);
5626: }
5627: }
5628: }
5629: return %returnhash;
5630: }
5631: # ---------------------------------------------------------- Domain roles
5632:
5633: sub get_domain_roles {
5634: my ($dom,$roles,$startdate,$enddate)=@_;
5635: if ((!defined($startdate)) || ($startdate eq '')) {
5636: $startdate = '.';
5637: }
5638: if ((!defined($enddate)) || ($enddate eq '')) {
5639: $enddate = '.';
5640: }
5641: my $rolelist;
5642: if (ref($roles) eq 'ARRAY') {
5643: $rolelist = join('&',@{$roles});
5644: }
5645: my %personnel = ();
5646:
5647: my %servers = &get_servers($dom,'library');
5648: foreach my $tryserver (keys(%servers)) {
5649: %{$personnel{$tryserver}}=();
5650: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
5651: &escape($startdate).':'.
5652: &escape($enddate).':'.
5653: &escape($rolelist), $tryserver))) {
5654: my ($key,$value) = split(/\=/,$line,2);
5655: if (($key) && ($value)) {
5656: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
5657: }
5658: }
5659: }
5660: return %personnel;
5661: }
5662:
5663: sub get_active_domroles {
5664: my ($dom,$roles) = @_;
5665: return () unless (ref($roles) eq 'ARRAY');
5666: my $now = time;
5667: my %dompersonnel = &get_domain_roles($dom,$roles,$now,$now);
5668: my %domroles;
5669: foreach my $server (keys(%dompersonnel)) {
5670: foreach my $user (sort(keys(%{$dompersonnel{$server}}))) {
5671: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,$user);
5672: $domroles{$uname.':'.$udom} = $dompersonnel{$server}{$user};
5673: }
5674: }
5675: return %domroles;
5676: }
5677:
5678: # ----------------------------------------------------------- Interval timing
5679:
5680: {
5681: # Caches needed for speedup of navmaps
5682: # We don't want to cache this for very long at all (5 seconds at most)
5683: #
5684: # The user for whom we cache
5685: my $cachedkey='';
5686: # The cached times for this user
5687: my %cachedtimes=();
5688: # When this was last done
5689: my $cachedtime='';
5690:
5691: sub load_all_first_access {
5692: my ($uname,$udom,$ignorecache)=@_;
5693: if (($cachedkey eq $uname.':'.$udom) &&
5694: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'}) &&
5695: (!$ignorecache)) {
5696: return;
5697: }
5698: $cachedtime=time;
5699: $cachedkey=$uname.':'.$udom;
5700: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
5701: }
5702:
5703: sub get_first_access {
5704: my ($type,$argsymb,$argmap,$ignorecache)=@_;
5705: my ($symb,$courseid,$udom,$uname)=&whichuser();
5706: if ($argsymb) { $symb=$argsymb; }
5707: my ($map,$id,$res)=&decode_symb($symb);
5708: if ($argmap) { $map = $argmap; }
5709: if ($type eq 'course') {
5710: $res='course';
5711: } elsif ($type eq 'map') {
5712: $res=&symbread($map);
5713: } else {
5714: $res=$symb;
5715: }
5716: &load_all_first_access($uname,$udom,$ignorecache);
5717: return $cachedtimes{"$courseid\0$res"};
5718: }
5719:
5720: sub set_first_access {
5721: my ($type,$interval)=@_;
5722: my ($symb,$courseid,$udom,$uname)=&whichuser();
5723: my ($map,$id,$res)=&decode_symb($symb);
5724: if ($type eq 'course') {
5725: $res='course';
5726: } elsif ($type eq 'map') {
5727: $res=&symbread($map);
5728: } else {
5729: $res=$symb;
5730: }
5731: $cachedkey='';
5732: my $firstaccess=&get_first_access($type,$symb,$map);
5733: if ($firstaccess) {
5734: &logthis("First access time already set ($firstaccess) when attempting ".
5735: "to set new value (type: $type, extent: $res) for $uname:$udom ".
5736: "in $courseid");
5737: return 'already_set';
5738: } else {
5739: my $start = time;
5740: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
5741: $udom,$uname);
5742: if ($putres eq 'ok') {
5743: &put('timerinterval',{"$courseid\0$res"=>$interval},
5744: $udom,$uname);
5745: &appenv(
5746: {
5747: 'course.'.$courseid.'.firstaccess.'.$res => $start,
5748: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
5749: }
5750: );
5751: if (($cachedtime) && (abs($start-$cachedtime) < 5)) {
5752: $cachedtimes{"$courseid\0$res"} = $start;
5753: }
5754: } elsif ($putres ne 'refused') {
5755: &logthis("Result: $putres when attempting to set first access time ".
5756: "(type: $type, extent: $res) for $uname:$udom in $courseid");
5757: }
5758: return $putres;
5759: }
5760: return 'already_set';
5761: }
5762: }
5763:
5764: # --------------------------------------------- Set Expire Date for Spreadsheet
5765:
5766: sub expirespread {
5767: my ($uname,$udom,$stype,$usymb)=@_;
5768: my $cid=$env{'request.course.id'};
5769: if ($cid) {
5770: my $now=time;
5771: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
5772: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
5773: $env{'course.'.$cid.'.num'}.
5774: ':nohist_expirationdates:'.
5775: &escape($key).'='.$now,
5776: $env{'course.'.$cid.'.home'})
5777: }
5778: return 'ok';
5779: }
5780:
5781: # ----------------------------------------------------- Devalidate Spreadsheets
5782:
5783: sub devalidate {
5784: my ($symb,$uname,$udom)=@_;
5785: my $cid=$env{'request.course.id'};
5786: if ($cid) {
5787: # delete the stored spreadsheets for
5788: # - the student level sheet of this user in course's homespace
5789: # - the assessment level sheet for this resource
5790: # for this user in user's homespace
5791: # - current conditional state info
5792: my $key=$uname.':'.$udom.':';
5793: my $status=
5794: &del('nohist_calculatedsheets',
5795: [$key.'studentcalc:'],
5796: $env{'course.'.$cid.'.domain'},
5797: $env{'course.'.$cid.'.num'})
5798: .' '.
5799: &del('nohist_calculatedsheets_'.$cid,
5800: [$key.'assesscalc:'.$symb],$udom,$uname);
5801: unless ($status eq 'ok ok') {
5802: &logthis('Could not devalidate spreadsheet '.
5803: $uname.' at '.$udom.' for '.
5804: $symb.': '.$status);
5805: }
5806: &delenv('user.state.'.$cid);
5807: }
5808: }
5809:
5810: sub get_scalar {
5811: my ($string,$end) = @_;
5812: my $value;
5813: if ($$string =~ s/^([^&]*?)($end)/$2/) {
5814: $value = $1;
5815: } elsif ($$string =~ s/^([^&]*?)&//) {
5816: $value = $1;
5817: }
5818: return &unescape($value);
5819: }
5820:
5821: sub array2str {
5822: my (@array) = @_;
5823: my $result=&arrayref2str(\@array);
5824: $result=~s/^__ARRAY_REF__//;
5825: $result=~s/__END_ARRAY_REF__$//;
5826: return $result;
5827: }
5828:
5829: sub arrayref2str {
5830: my ($arrayref) = @_;
5831: my $result='__ARRAY_REF__';
5832: foreach my $elem (@$arrayref) {
5833: if(ref($elem) eq 'ARRAY') {
5834: $result.=&arrayref2str($elem).'&';
5835: } elsif(ref($elem) eq 'HASH') {
5836: $result.=&hashref2str($elem).'&';
5837: } elsif(ref($elem)) {
5838: #print("Got a ref of ".(ref($elem))." skipping.");
5839: } else {
5840: $result.=&escape($elem).'&';
5841: }
5842: }
5843: $result=~s/\&$//;
5844: $result .= '__END_ARRAY_REF__';
5845: return $result;
5846: }
5847:
5848: sub hash2str {
5849: my (%hash) = @_;
5850: my $result=&hashref2str(\%hash);
5851: $result=~s/^__HASH_REF__//;
5852: $result=~s/__END_HASH_REF__$//;
5853: return $result;
5854: }
5855:
5856: sub hashref2str {
5857: my ($hashref)=@_;
5858: my $result='__HASH_REF__';
5859: foreach my $key (sort(keys(%$hashref))) {
5860: if (ref($key) eq 'ARRAY') {
5861: $result.=&arrayref2str($key).'=';
5862: } elsif (ref($key) eq 'HASH') {
5863: $result.=&hashref2str($key).'=';
5864: } elsif (ref($key)) {
5865: $result.='=';
5866: #print("Got a ref of ".(ref($key))." skipping.");
5867: } else {
5868: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
5869: }
5870:
5871: if(ref($hashref->{$key}) eq 'ARRAY') {
5872: $result.=&arrayref2str($hashref->{$key}).'&';
5873: } elsif(ref($hashref->{$key}) eq 'HASH') {
5874: $result.=&hashref2str($hashref->{$key}).'&';
5875: } elsif(ref($hashref->{$key})) {
5876: $result.='&';
5877: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
5878: } else {
5879: $result.=&escape($hashref->{$key}).'&';
5880: }
5881: }
5882: $result=~s/\&$//;
5883: $result .= '__END_HASH_REF__';
5884: return $result;
5885: }
5886:
5887: sub str2hash {
5888: my ($string)=@_;
5889: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
5890: return %$hash;
5891: }
5892:
5893: sub str2hashref {
5894: my ($string) = @_;
5895:
5896: my %hash;
5897:
5898: if($string !~ /^__HASH_REF__/) {
5899: if (! ($string eq '' || !defined($string))) {
5900: $hash{'error'}='Not hash reference';
5901: }
5902: return (\%hash, $string);
5903: }
5904:
5905: $string =~ s/^__HASH_REF__//;
5906:
5907: while($string !~ /^__END_HASH_REF__/) {
5908: #key
5909: my $key='';
5910: if($string =~ /^__HASH_REF__/) {
5911: ($key, $string)=&str2hashref($string);
5912: if(defined($key->{'error'})) {
5913: $hash{'error'}='Bad data';
5914: return (\%hash, $string);
5915: }
5916: } elsif($string =~ /^__ARRAY_REF__/) {
5917: ($key, $string)=&str2arrayref($string);
5918: if($key->[0] eq 'Array reference error') {
5919: $hash{'error'}='Bad data';
5920: return (\%hash, $string);
5921: }
5922: } else {
5923: $string =~ s/^(.*?)=//;
5924: $key=&unescape($1);
5925: }
5926: $string =~ s/^=//;
5927:
5928: #value
5929: my $value='';
5930: if($string =~ /^__HASH_REF__/) {
5931: ($value, $string)=&str2hashref($string);
5932: if(defined($value->{'error'})) {
5933: $hash{'error'}='Bad data';
5934: return (\%hash, $string);
5935: }
5936: } elsif($string =~ /^__ARRAY_REF__/) {
5937: ($value, $string)=&str2arrayref($string);
5938: if($value->[0] eq 'Array reference error') {
5939: $hash{'error'}='Bad data';
5940: return (\%hash, $string);
5941: }
5942: } else {
5943: $value=&get_scalar(\$string,'__END_HASH_REF__');
5944: }
5945: $string =~ s/^&//;
5946:
5947: $hash{$key}=$value;
5948: }
5949:
5950: $string =~ s/^__END_HASH_REF__//;
5951:
5952: return (\%hash, $string);
5953: }
5954:
5955: sub str2array {
5956: my ($string)=@_;
5957: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
5958: return @$array;
5959: }
5960:
5961: sub str2arrayref {
5962: my ($string) = @_;
5963: my @array;
5964:
5965: if($string !~ /^__ARRAY_REF__/) {
5966: if (! ($string eq '' || !defined($string))) {
5967: $array[0]='Array reference error';
5968: }
5969: return (\@array, $string);
5970: }
5971:
5972: $string =~ s/^__ARRAY_REF__//;
5973:
5974: while($string !~ /^__END_ARRAY_REF__/) {
5975: my $value='';
5976: if($string =~ /^__HASH_REF__/) {
5977: ($value, $string)=&str2hashref($string);
5978: if(defined($value->{'error'})) {
5979: $array[0] ='Array reference error';
5980: return (\@array, $string);
5981: }
5982: } elsif($string =~ /^__ARRAY_REF__/) {
5983: ($value, $string)=&str2arrayref($string);
5984: if($value->[0] eq 'Array reference error') {
5985: $array[0] ='Array reference error';
5986: return (\@array, $string);
5987: }
5988: } else {
5989: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
5990: }
5991: $string =~ s/^&//;
5992:
5993: push(@array, $value);
5994: }
5995:
5996: $string =~ s/^__END_ARRAY_REF__//;
5997:
5998: return (\@array, $string);
5999: }
6000:
6001: # -------------------------------------------------------------------Temp Store
6002:
6003: sub tmpreset {
6004: my ($symb,$namespace,$domain,$stuname) = @_;
6005: if (!$symb) {
6006: $symb=&symbread();
6007: if (!$symb) { $symb= $env{'request.url'}; }
6008: }
6009: $symb=escape($symb);
6010:
6011: if (!$namespace) { $namespace=$env{'request.state'}; }
6012: $namespace=~s/\//\_/g;
6013: $namespace=~s/\W//g;
6014:
6015: if (!$domain) { $domain=$env{'user.domain'}; }
6016: if (!$stuname) { $stuname=$env{'user.name'}; }
6017: if ($domain eq 'public' && $stuname eq 'public') {
6018: $stuname=$ENV{'REMOTE_ADDR'};
6019: }
6020: my $path=LONCAPA::tempdir();
6021: my %hash;
6022: if (tie(%hash,'GDBM_File',
6023: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
6024: &GDBM_WRCREAT(),0640)) {
6025: foreach my $key (keys(%hash)) {
6026: if ($key=~ /:$symb/) {
6027: delete($hash{$key});
6028: }
6029: }
6030: }
6031: }
6032:
6033: sub tmpstore {
6034: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
6035:
6036: if (!$symb) {
6037: $symb=&symbread();
6038: if (!$symb) { $symb= $env{'request.url'}; }
6039: }
6040: $symb=escape($symb);
6041:
6042: if (!$namespace) {
6043: # I don't think we would ever want to store this for a course.
6044: # it seems this will only be used if we don't have a course.
6045: #$namespace=$env{'request.course.id'};
6046: #if (!$namespace) {
6047: $namespace=$env{'request.state'};
6048: #}
6049: }
6050: $namespace=~s/\//\_/g;
6051: $namespace=~s/\W//g;
6052: if (!$domain) { $domain=$env{'user.domain'}; }
6053: if (!$stuname) { $stuname=$env{'user.name'}; }
6054: if ($domain eq 'public' && $stuname eq 'public') {
6055: $stuname=$ENV{'REMOTE_ADDR'};
6056: }
6057: my $now=time;
6058: my %hash;
6059: my $path=LONCAPA::tempdir();
6060: if (tie(%hash,'GDBM_File',
6061: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
6062: &GDBM_WRCREAT(),0640)) {
6063: $hash{"version:$symb"}++;
6064: my $version=$hash{"version:$symb"};
6065: my $allkeys='';
6066: foreach my $key (keys(%$storehash)) {
6067: $allkeys.=$key.':';
6068: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
6069: }
6070: $hash{"$version:$symb:timestamp"}=$now;
6071: $allkeys.='timestamp';
6072: $hash{"$version:keys:$symb"}=$allkeys;
6073: if (untie(%hash)) {
6074: return 'ok';
6075: } else {
6076: return "error:$!";
6077: }
6078: } else {
6079: return "error:$!";
6080: }
6081: }
6082:
6083: # -----------------------------------------------------------------Temp Restore
6084:
6085: sub tmprestore {
6086: my ($symb,$namespace,$domain,$stuname) = @_;
6087:
6088: if (!$symb) {
6089: $symb=&symbread();
6090: if (!$symb) { $symb= $env{'request.url'}; }
6091: }
6092: $symb=escape($symb);
6093:
6094: if (!$namespace) { $namespace=$env{'request.state'}; }
6095:
6096: if (!$domain) { $domain=$env{'user.domain'}; }
6097: if (!$stuname) { $stuname=$env{'user.name'}; }
6098: if ($domain eq 'public' && $stuname eq 'public') {
6099: $stuname=$ENV{'REMOTE_ADDR'};
6100: }
6101: my %returnhash;
6102: $namespace=~s/\//\_/g;
6103: $namespace=~s/\W//g;
6104: my %hash;
6105: my $path=LONCAPA::tempdir();
6106: if (tie(%hash,'GDBM_File',
6107: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
6108: &GDBM_READER(),0640)) {
6109: my $version=$hash{"version:$symb"};
6110: $returnhash{'version'}=$version;
6111: my $scope;
6112: for ($scope=1;$scope<=$version;$scope++) {
6113: my $vkeys=$hash{"$scope:keys:$symb"};
6114: my @keys=split(/:/,$vkeys);
6115: my $key;
6116: $returnhash{"$scope:keys"}=$vkeys;
6117: foreach $key (@keys) {
6118: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
6119: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
6120: }
6121: }
6122: if (!(untie(%hash))) {
6123: return "error:$!";
6124: }
6125: } else {
6126: return "error:$!";
6127: }
6128: return %returnhash;
6129: }
6130:
6131: # ----------------------------------------------------------------------- Store
6132:
6133: sub store {
6134: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
6135: my $home='';
6136:
6137: if ($stuname) { $home=&homeserver($stuname,$domain); }
6138:
6139: $symb=&symbclean($symb);
6140: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
6141:
6142: if (!$domain) { $domain=$env{'user.domain'}; }
6143: if (!$stuname) { $stuname=$env{'user.name'}; }
6144:
6145: &devalidate($symb,$stuname,$domain);
6146:
6147: $symb=escape($symb);
6148: if (!$namespace) {
6149: unless ($namespace=$env{'request.course.id'}) {
6150: return '';
6151: }
6152: }
6153: if (!$home) { $home=$env{'user.home'}; }
6154:
6155: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
6156: $$storehash{'host'}=$perlvar{'lonHostID'};
6157:
6158: my $namevalue='';
6159: foreach my $key (keys(%$storehash)) {
6160: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6161: }
6162: $namevalue=~s/\&$//;
6163: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
6164: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
6165: }
6166:
6167: # -------------------------------------------------------------- Critical Store
6168:
6169: sub cstore {
6170: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
6171: my $home='';
6172:
6173: if ($stuname) { $home=&homeserver($stuname,$domain); }
6174:
6175: $symb=&symbclean($symb);
6176: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
6177:
6178: if (!$domain) { $domain=$env{'user.domain'}; }
6179: if (!$stuname) { $stuname=$env{'user.name'}; }
6180:
6181: &devalidate($symb,$stuname,$domain);
6182:
6183: $symb=escape($symb);
6184: if (!$namespace) {
6185: unless ($namespace=$env{'request.course.id'}) {
6186: return '';
6187: }
6188: }
6189: if (!$home) { $home=$env{'user.home'}; }
6190:
6191: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
6192: $$storehash{'host'}=$perlvar{'lonHostID'};
6193:
6194: my $namevalue='';
6195: foreach my $key (keys(%$storehash)) {
6196: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6197: }
6198: $namevalue=~s/\&$//;
6199: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
6200: return critical
6201: ("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
6202: }
6203:
6204: # --------------------------------------------------------------------- Restore
6205:
6206: sub restore {
6207: my ($symb,$namespace,$domain,$stuname) = @_;
6208: my $home='';
6209:
6210: if ($stuname) { $home=&homeserver($stuname,$domain); }
6211:
6212: if (!$symb) {
6213: return if ($namespace eq 'courserequests');
6214: unless ($symb=escape(&symbread())) { return ''; }
6215: } else {
6216: unless ($namespace eq 'courserequests') {
6217: $symb=&escape(&symbclean($symb));
6218: }
6219: }
6220: if (!$namespace) {
6221: unless ($namespace=$env{'request.course.id'}) {
6222: return '';
6223: }
6224: }
6225: if (!$domain) { $domain=$env{'user.domain'}; }
6226: if (!$stuname) { $stuname=$env{'user.name'}; }
6227: if (!$home) { $home=$env{'user.home'}; }
6228: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
6229:
6230: my %returnhash=();
6231: foreach my $line (split(/\&/,$answer)) {
6232: my ($name,$value)=split(/\=/,$line);
6233: $returnhash{&unescape($name)}=&thaw_unescape($value);
6234: }
6235: my $version;
6236: for ($version=1;$version<=$returnhash{'version'};$version++) {
6237: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
6238: $returnhash{$item}=$returnhash{$version.':'.$item};
6239: }
6240: }
6241: return %returnhash;
6242: }
6243:
6244: # ---------------------------------------------------------- Course Description
6245: #
6246: #
6247:
6248: sub coursedescription {
6249: my ($courseid,$args)=@_;
6250: $courseid=~s/^\///;
6251: $courseid=~s/\_/\//g;
6252: my ($cdomain,$cnum)=split(/\//,$courseid);
6253: my $chome=&homeserver($cnum,$cdomain);
6254: my $normalid=$cdomain.'_'.$cnum;
6255: # need to always cache even if we get errors otherwise we keep
6256: # trying and trying and trying to get the course description.
6257: my %envhash=();
6258: my %returnhash=();
6259:
6260: my $expiretime=600;
6261: if ($env{'request.course.id'} eq $normalid) {
6262: $expiretime=120;
6263: }
6264:
6265: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
6266: if (!$args->{'freshen_cache'}
6267: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
6268: foreach my $key (keys(%env)) {
6269: next if ($key !~ /^\Q$prefix\E(.*)/);
6270: my ($setting) = $1;
6271: $returnhash{$setting} = $env{$key};
6272: }
6273: return %returnhash;
6274: }
6275:
6276: # get the data again
6277:
6278: if (!$args->{'one_time'}) {
6279: $envhash{'course.'.$normalid.'.last_cache'}=time;
6280: }
6281:
6282: if ($chome ne 'no_host') {
6283: %returnhash=&dump('environment',$cdomain,$cnum);
6284: if (!exists($returnhash{'con_lost'})) {
6285: my $username = $env{'user.name'}; # Defult username
6286: if(defined $args->{'user'}) {
6287: $username = $args->{'user'};
6288: }
6289: $returnhash{'home'}= $chome;
6290: $returnhash{'domain'} = $cdomain;
6291: $returnhash{'num'} = $cnum;
6292: if (!defined($returnhash{'type'})) {
6293: $returnhash{'type'} = 'Course';
6294: }
6295: while (my ($name,$value) = each %returnhash) {
6296: $envhash{'course.'.$normalid.'.'.$name}=$value;
6297: }
6298: $returnhash{'url'}=&clutter($returnhash{'url'});
6299: $returnhash{'fn'}=LONCAPA::tempdir() .
6300: $username.'_'.$cdomain.'_'.$cnum;
6301: $envhash{'course.'.$normalid.'.home'}=$chome;
6302: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
6303: $envhash{'course.'.$normalid.'.num'}=$cnum;
6304: }
6305: }
6306: if (!$args->{'one_time'}) {
6307: &appenv(\%envhash);
6308: }
6309: return %returnhash;
6310: }
6311:
6312: sub update_released_required {
6313: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
6314: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
6315: $cid = $env{'request.course.id'};
6316: $cdom = $env{'course.'.$cid.'.domain'};
6317: $cnum = $env{'course.'.$cid.'.num'};
6318: $chome = $env{'course.'.$cid.'.home'};
6319: }
6320: if ($needsrelease) {
6321: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
6322: my $needsupdate;
6323: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
6324: $needsupdate = 1;
6325: } else {
6326: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
6327: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
6328: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
6329: $needsupdate = 1;
6330: }
6331: }
6332: if ($needsupdate) {
6333: my %needshash = (
6334: 'internal.releaserequired' => $needsrelease,
6335: );
6336: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
6337: if ($putresult eq 'ok') {
6338: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
6339: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
6340: if (ref($crsinfo{$cid}) eq 'HASH') {
6341: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
6342: &courseidput($cdom,\%crsinfo,$chome,'notime');
6343: }
6344: }
6345: }
6346: }
6347: return;
6348: }
6349:
6350: # -------------------------------------------------See if a user is privileged
6351:
6352: sub privileged {
6353: my ($username,$domain,$possdomains,$possroles)=@_;
6354: my $now = time;
6355: my $roles;
6356: if (ref($possroles) eq 'ARRAY') {
6357: $roles = $possroles;
6358: } else {
6359: $roles = ['dc','su'];
6360: }
6361: if (ref($possdomains) eq 'ARRAY') {
6362: my %privileged = &privileged_by_domain($possdomains,$roles);
6363: foreach my $dom (@{$possdomains}) {
6364: if (($username =~ /^$match_username$/) && ($domain =~ /^$match_domain$/) &&
6365: (ref($privileged{$dom}) eq 'HASH')) {
6366: foreach my $role (@{$roles}) {
6367: if (ref($privileged{$dom}{$role}) eq 'HASH') {
6368: if (exists($privileged{$dom}{$role}{$username.':'.$domain})) {
6369: my ($end,$start) = split(/:/,$privileged{$dom}{$role}{$username.':'.$domain});
6370: return 1 unless (($end && $end < $now) ||
6371: ($start && $start > $now));
6372: }
6373: }
6374: }
6375: }
6376: }
6377: } else {
6378: my %rolesdump = &dump("roles", $domain, $username) or return 0;
6379: my $now = time;
6380:
6381: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys(%rolesdump)}) {
6382: my ($trole, $tend, $tstart) = split(/_/, $role);
6383: if (grep(/^\Q$trole\E$/,@{$roles})) {
6384: return 1 unless ($tend && $tend < $now)
6385: or ($tstart && $tstart > $now);
6386: }
6387: }
6388: }
6389: return 0;
6390: }
6391:
6392: sub privileged_by_domain {
6393: my ($domains,$roles) = @_;
6394: my %privileged = ();
6395: my $cachetime = 60*60*24;
6396: my $now = time;
6397: unless ((ref($domains) eq 'ARRAY') && (ref($roles) eq 'ARRAY')) {
6398: return %privileged;
6399: }
6400: foreach my $dom (@{$domains}) {
6401: next if (ref($privileged{$dom}) eq 'HASH');
6402: my $needroles;
6403: foreach my $role (@{$roles}) {
6404: my ($result,$cached)=&is_cached_new('priv_'.$role,$dom);
6405: if (defined($cached)) {
6406: if (ref($result) eq 'HASH') {
6407: $privileged{$dom}{$role} = $result;
6408: }
6409: } else {
6410: $needroles = 1;
6411: }
6412: }
6413: if ($needroles) {
6414: my %dompersonnel = &get_domain_roles($dom,$roles);
6415: $privileged{$dom} = {};
6416: foreach my $server (keys(%dompersonnel)) {
6417: if (ref($dompersonnel{$server}) eq 'HASH') {
6418: foreach my $item (keys(%{$dompersonnel{$server}})) {
6419: my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
6420: my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
6421: next if ($end && $end < $now);
6422: $privileged{$dom}{$trole}{$uname.':'.$udom} =
6423: $dompersonnel{$server}{$item};
6424: }
6425: }
6426: }
6427: if (ref($privileged{$dom}) eq 'HASH') {
6428: foreach my $role (@{$roles}) {
6429: if (ref($privileged{$dom}{$role}) eq 'HASH') {
6430: &do_cache_new('priv_'.$role,$dom,$privileged{$dom}{$role},$cachetime);
6431: } else {
6432: my %hash = ();
6433: &do_cache_new('priv_'.$role,$dom,\%hash,$cachetime);
6434: }
6435: }
6436: }
6437: }
6438: }
6439: return %privileged;
6440: }
6441:
6442: # -------------------------------------------------------- Get user privileges
6443:
6444: sub rolesinit {
6445: my ($domain, $username) = @_;
6446: my %userroles = ('user.login.time' => time);
6447: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
6448:
6449: # firstaccess and timerinterval are related to timed maps/resources.
6450: # also, blocking can be triggered by an activating timer
6451: # it's saved in the user's %env.
6452: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
6453: my %timerinterval = &dump('timerinterval', $domain, $username);
6454: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
6455: %timerintchk, %timerintenv);
6456:
6457: foreach my $key (keys(%firstaccess)) {
6458: my ($cid, $rest) = split(/\0/, $key);
6459: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
6460: }
6461:
6462: foreach my $key (keys(%timerinterval)) {
6463: my ($cid,$rest) = split(/\0/,$key);
6464: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
6465: }
6466:
6467: my %allroles=();
6468: my %allgroups=();
6469:
6470: for my $area (grep { ! /^rolesdef_/ } keys(%rolesdump)) {
6471: my $role = $rolesdump{$area};
6472: $area =~ s/\_\w\w$//;
6473:
6474: my ($trole, $tend, $tstart, $group_privs);
6475:
6476: if ($role =~ /^cr/) {
6477: # Custom role, defined by a user
6478: # e.g., user.role.cr/msu/smith/mynewrole
6479: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
6480: $trole = $1;
6481: ($tend, $tstart) = split('_', $2);
6482: } else {
6483: $trole = $role;
6484: }
6485: } elsif ($role =~ m|^gr/|) {
6486: # Role of member in a group, defined within a course/community
6487: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
6488: ($trole, $tend, $tstart) = split(/_/, $role);
6489: next if $tstart eq '-1';
6490: ($trole, $group_privs) = split(/\//, $trole);
6491: $group_privs = &unescape($group_privs);
6492: } else {
6493: # Just a normal role, defined in roles.tab
6494: ($trole, $tend, $tstart) = split(/_/,$role);
6495: }
6496:
6497: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
6498: $username);
6499: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
6500:
6501: # role expired or not available yet?
6502: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
6503: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
6504:
6505: next if $area eq '' or $trole eq '';
6506:
6507: my $spec = "$trole.$area";
6508: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
6509:
6510: if ($trole =~ /^cr\//) {
6511: # Custom role, defined by a user
6512: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
6513: } elsif ($trole eq 'gr') {
6514: # Role of a member in a group, defined within a course/community
6515: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
6516: next;
6517: } else {
6518: # Normal role, defined in roles.tab
6519: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
6520: }
6521:
6522: my $cid = $tdomain.'_'.$trest;
6523: unless ($firstaccchk{$cid}) {
6524: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
6525: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
6526: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
6527: $coursetimerstarts{$cid}{$item};
6528: }
6529: }
6530: $firstaccchk{$cid} = 1;
6531: }
6532: unless ($timerintchk{$cid}) {
6533: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
6534: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
6535: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
6536: $coursetimerintervals{$cid}{$item};
6537: }
6538: }
6539: $timerintchk{$cid} = 1;
6540: }
6541: }
6542:
6543: @userroles{'user.author','user.adv','user.rar'} = &set_userprivs(\%userroles,
6544: \%allroles, \%allgroups);
6545: $env{'user.adv'} = $userroles{'user.adv'};
6546: $env{'user.rar'} = $userroles{'user.rar'};
6547:
6548: return (\%userroles,\%firstaccenv,\%timerintenv);
6549: }
6550:
6551: sub set_arearole {
6552: my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
6553: unless ($nolog) {
6554: # log the associated role with the area
6555: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
6556: }
6557: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
6558: }
6559:
6560: sub custom_roleprivs {
6561: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
6562: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
6563: my $homsvr = &homeserver($rauthor,$rdomain);
6564: if (&hostname($homsvr) ne '') {
6565: my ($rdummy,$roledef)=
6566: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
6567: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
6568: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
6569: if (defined($syspriv)) {
6570: if ($trest =~ /^$match_community$/) {
6571: $syspriv =~ s/bre\&S//;
6572: }
6573: $$allroles{'cm./'}.=':'.$syspriv;
6574: $$allroles{$spec.'./'}.=':'.$syspriv;
6575: }
6576: if ($tdomain ne '') {
6577: if (defined($dompriv)) {
6578: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
6579: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
6580: }
6581: if (($trest ne '') && (defined($coursepriv))) {
6582: if ($trole =~ m{^cr/$tdomain/$tdomain\Q-domainconfig\E/([^/]+)$}) {
6583: my $rolename = $1;
6584: $coursepriv = &course_adhocrole_privs($rolename,$tdomain,$trest,$coursepriv);
6585: }
6586: $$allroles{'cm.'.$area}.=':'.$coursepriv;
6587: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
6588: }
6589: }
6590: }
6591: }
6592: }
6593:
6594: sub course_adhocrole_privs {
6595: my ($rolename,$cdom,$cnum,$coursepriv) = @_;
6596: my %overrides = &get('environment',["internal.adhocpriv.$rolename"],$cdom,$cnum);
6597: if ($overrides{"internal.adhocpriv.$rolename"}) {
6598: my (%currprivs,%storeprivs);
6599: foreach my $item (split(/:/,$coursepriv)) {
6600: my ($priv,$restrict) = split(/\&/,$item);
6601: $currprivs{$priv} = $restrict;
6602: }
6603: my (%possadd,%possremove,%full);
6604: foreach my $item (split(/\:/,$Apache::lonnet::pr{'cr:c'})) {
6605: my ($priv,$restrict)=split(/\&/,$item);
6606: $full{$priv} = $restrict;
6607: }
6608: foreach my $item (split(/,/,$overrides{"internal.adhocpriv.$rolename"})) {
6609: next if ($item eq '');
6610: my ($rule,$rest) = split(/=/,$item);
6611: next unless (($rule eq 'off') || ($rule eq 'on'));
6612: foreach my $priv (split(/:/,$rest)) {
6613: if ($priv ne '') {
6614: if ($rule eq 'off') {
6615: $possremove{$priv} = 1;
6616: } else {
6617: $possadd{$priv} = 1;
6618: }
6619: }
6620: }
6621: }
6622: foreach my $priv (sort(keys(%full))) {
6623: if (exists($currprivs{$priv})) {
6624: unless (exists($possremove{$priv})) {
6625: $storeprivs{$priv} = $currprivs{$priv};
6626: }
6627: } elsif (exists($possadd{$priv})) {
6628: $storeprivs{$priv} = $full{$priv};
6629: }
6630: }
6631: $coursepriv = ':'.join(':',map { $_.'&'.$storeprivs{$_}; } sort(keys(%storeprivs)));
6632: }
6633: return $coursepriv;
6634: }
6635:
6636: sub group_roleprivs {
6637: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
6638: my $access = 1;
6639: my $now = time;
6640: if (($tend!=0) && ($tend<$now)) { $access = 0; }
6641: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
6642: if ($access) {
6643: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
6644: $$allgroups{$course}{$group} .=':'.$group_privs;
6645: }
6646: }
6647:
6648: sub standard_roleprivs {
6649: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
6650: if (defined($pr{$trole.':s'})) {
6651: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
6652: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
6653: }
6654: if ($tdomain ne '') {
6655: if (defined($pr{$trole.':d'})) {
6656: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
6657: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
6658: }
6659: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
6660: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
6661: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
6662: }
6663: }
6664: }
6665:
6666: sub set_userprivs {
6667: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
6668: my $author=0;
6669: my $adv=0;
6670: my $rar=0;
6671: my %grouproles = ();
6672: if (keys(%{$allgroups}) > 0) {
6673: my @groupkeys;
6674: foreach my $role (keys(%{$allroles})) {
6675: push(@groupkeys,$role);
6676: }
6677: if (ref($groups_roles) eq 'HASH') {
6678: foreach my $key (keys(%{$groups_roles})) {
6679: unless (grep(/^\Q$key\E$/,@groupkeys)) {
6680: push(@groupkeys,$key);
6681: }
6682: }
6683: }
6684: if (@groupkeys > 0) {
6685: foreach my $role (@groupkeys) {
6686: my ($trole,$area,$sec,$extendedarea);
6687: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
6688: $trole = $1;
6689: $area = $2;
6690: $sec = $3;
6691: $extendedarea = $area.$sec;
6692: if (exists($$allgroups{$area})) {
6693: foreach my $group (keys(%{$$allgroups{$area}})) {
6694: my $spec = $trole.'.'.$extendedarea;
6695: $grouproles{$spec.'.'.$area.'/'.$group} =
6696: $$allgroups{$area}{$group};
6697: }
6698: }
6699: }
6700: }
6701: }
6702: }
6703: foreach my $group (keys(%grouproles)) {
6704: $$allroles{$group} = $grouproles{$group};
6705: }
6706: foreach my $role (keys(%{$allroles})) {
6707: my %thesepriv;
6708: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
6709: foreach my $item (split(/:/,$$allroles{$role})) {
6710: if ($item ne '') {
6711: my ($privilege,$restrictions)=split(/&/,$item);
6712: if ($restrictions eq '') {
6713: $thesepriv{$privilege}='F';
6714: } elsif ($thesepriv{$privilege} ne 'F') {
6715: $thesepriv{$privilege}.=$restrictions;
6716: }
6717: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
6718: if ($thesepriv{'rar'} eq 'F') { $rar=1; }
6719: }
6720: }
6721: my $thesestr='';
6722: foreach my $priv (sort(keys(%thesepriv))) {
6723: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
6724: }
6725: $userroles->{'user.priv.'.$role} = $thesestr;
6726: }
6727: return ($author,$adv,$rar);
6728: }
6729:
6730: sub role_status {
6731: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
6732: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
6733: my ($one,$two) = split(m{\./},$rolekey,2);
6734: (undef,undef,$$role) = split(/\./,$one,3);
6735: unless (!defined($$role) || $$role eq '') {
6736: $$where = '/'.$two;
6737: $$trolecode=$$role.'.'.$$where;
6738: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
6739: $$tstatus='is';
6740: if ($$tstart && $$tstart>$update) {
6741: $$tstatus='future';
6742: if ($$tstart<$now) {
6743: if ($$tstart && $$tstart>$refresh) {
6744: if (($$where ne '') && ($$role ne '')) {
6745: my (%allroles,%allgroups,$group_privs,
6746: %groups_roles,@rolecodes);
6747: my %userroles = (
6748: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
6749: );
6750: @rolecodes = ('cm');
6751: my $spec=$$role.'.'.$$where;
6752: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
6753: if ($$role =~ /^cr\//) {
6754: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
6755: push(@rolecodes,'cr');
6756: } elsif ($$role eq 'gr') {
6757: push(@rolecodes,$$role);
6758: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
6759: $env{'user.name'});
6760: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
6761: (undef,my $group_privs) = split(/\//,$trole);
6762: $group_privs = &unescape($group_privs);
6763: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
6764: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
6765: &get_groups_roles($tdomain,$trest,
6766: \%course_roles,\@rolecodes,
6767: \%groups_roles);
6768: } else {
6769: push(@rolecodes,$$role);
6770: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
6771: }
6772: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%allroles,\%allgroups,
6773: \%groups_roles);
6774: &appenv(\%userroles,\@rolecodes);
6775: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
6776: }
6777: }
6778: $$tstatus = 'is';
6779: }
6780: }
6781: if ($$tend) {
6782: if ($$tend<$update) {
6783: $$tstatus='expired';
6784: } elsif ($$tend<$now) {
6785: $$tstatus='will_not';
6786: }
6787: }
6788: }
6789: }
6790: }
6791:
6792: sub get_groups_roles {
6793: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
6794: return unless((ref($cdom_courseroles) eq 'HASH') &&
6795: (ref($rolecodes) eq 'ARRAY') &&
6796: (ref($groups_roles) eq 'HASH'));
6797: if (keys(%{$cdom_courseroles}) > 0) {
6798: my ($cnum) = ($rest =~ /^($match_courseid)/);
6799: if ($cdom ne '' && $cnum ne '') {
6800: foreach my $key (keys(%{$cdom_courseroles})) {
6801: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
6802: my $crsrole = $1;
6803: my $crssec = $2;
6804: if ($crsrole =~ /^cr/) {
6805: unless (grep(/^cr$/,@{$rolecodes})) {
6806: push(@{$rolecodes},'cr');
6807: }
6808: } else {
6809: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
6810: push(@{$rolecodes},$crsrole);
6811: }
6812: }
6813: my $rolekey = "$crsrole./$cdom/$cnum";
6814: if ($crssec ne '') {
6815: $rolekey .= "/$crssec";
6816: }
6817: $rolekey .= './';
6818: $groups_roles->{$rolekey} = $rolecodes;
6819: }
6820: }
6821: }
6822: }
6823: return;
6824: }
6825:
6826: sub delete_env_groupprivs {
6827: my ($where,$courseroles,$possroles) = @_;
6828: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
6829: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
6830: unless (ref($courseroles->{$udom}) eq 'HASH') {
6831: %{$courseroles->{$udom}} =
6832: &get_my_roles('','','userroles',['active'],
6833: $possroles,[$udom],1);
6834: }
6835: if (ref($courseroles->{$udom}) eq 'HASH') {
6836: foreach my $item (keys(%{$courseroles->{$udom}})) {
6837: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
6838: my $area = '/'.$cdom.'/'.$cnum;
6839: my $privkey = "user.priv.$crsrole.$area";
6840: if ($crssec ne '') {
6841: $privkey .= '/'.$crssec;
6842: }
6843: $privkey .= ".$area/$group";
6844: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
6845: }
6846: }
6847: return;
6848: }
6849:
6850: sub check_adhoc_privs {
6851: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller,$sec) = @_;
6852: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
6853: if ($sec) {
6854: $cckey .= '/'.$sec;
6855: }
6856: my $setprivs;
6857: if ($env{$cckey}) {
6858: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
6859: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
6860: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
6861: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
6862: $setprivs = 1;
6863: }
6864: } else {
6865: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
6866: $setprivs = 1;
6867: }
6868: return $setprivs;
6869: }
6870:
6871: sub set_adhoc_privileges {
6872: # role can be cc, ca, or cr/<dom>/<dom>-domainconfig/role
6873: my ($dcdom,$pickedcourse,$role,$caller,$sec) = @_;
6874: my $area = '/'.$dcdom.'/'.$pickedcourse;
6875: if ($sec ne '') {
6876: $area .= '/'.$sec;
6877: }
6878: my $spec = $role.'.'.$area;
6879: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
6880: $env{'user.name'},1);
6881: my %rolehash = ();
6882: if ($role =~ m{^\Qcr/$dcdom/$dcdom\E\-domainconfig/(\w+)$}) {
6883: my $rolename = $1;
6884: &custom_roleprivs(\%rolehash,$role,$dcdom,$pickedcourse,$spec,$area);
6885: my %domdef = &get_domain_defaults($dcdom);
6886: if (ref($domdef{'adhocroles'}) eq 'HASH') {
6887: if (ref($domdef{'adhocroles'}{$rolename}) eq 'HASH') {
6888: &appenv({'request.role.desc' => $domdef{'adhocroles'}{$rolename}{'desc'},});
6889: }
6890: }
6891: } else {
6892: &standard_roleprivs(\%rolehash,$role,$dcdom,$spec,$pickedcourse,$area);
6893: }
6894: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%rolehash);
6895: &appenv(\%userroles,[$role,'cm']);
6896: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
6897: unless (($caller eq 'constructaccess' && $env{'request.course.id'}) ||
6898: ($caller eq 'tiny')) {
6899: &appenv( {'request.role' => $spec,
6900: 'request.role.domain' => $dcdom,
6901: 'request.course.sec' => $sec,
6902: }
6903: );
6904: my $tadv=0;
6905: if (&allowed('adv') eq 'F') { $tadv=1; }
6906: &appenv({'request.role.adv' => $tadv});
6907: }
6908: }
6909:
6910: # --------------------------------------------------------------- get interface
6911:
6912: sub get {
6913: my ($namespace,$storearr,$udomain,$uname)=@_;
6914: my $items='';
6915: foreach my $item (@$storearr) {
6916: $items.=&escape($item).'&';
6917: }
6918: $items=~s/\&$//;
6919: if (!$udomain) { $udomain=$env{'user.domain'}; }
6920: if (!$uname) { $uname=$env{'user.name'}; }
6921: my $uhome=&homeserver($uname,$udomain);
6922:
6923: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
6924: my @pairs=split(/\&/,$rep);
6925: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
6926: return @pairs;
6927: }
6928: my %returnhash=();
6929: my $i=0;
6930: foreach my $item (@$storearr) {
6931: $returnhash{$item}=&thaw_unescape($pairs[$i]);
6932: $i++;
6933: }
6934: return %returnhash;
6935: }
6936:
6937: # --------------------------------------------------------------- del interface
6938:
6939: sub del {
6940: my ($namespace,$storearr,$udomain,$uname)=@_;
6941: my $items='';
6942: foreach my $item (@$storearr) {
6943: $items.=&escape($item).'&';
6944: }
6945:
6946: $items=~s/\&$//;
6947: if (!$udomain) { $udomain=$env{'user.domain'}; }
6948: if (!$uname) { $uname=$env{'user.name'}; }
6949: my $uhome=&homeserver($uname,$udomain);
6950: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
6951: }
6952:
6953: # -------------------------------------------------------------- dump interface
6954:
6955: sub unserialize {
6956: my ($rep, $escapedkeys) = @_;
6957:
6958: return {} if $rep =~ /^error/;
6959:
6960: my %returnhash=();
6961: foreach my $item (split(/\&/,$rep)) {
6962: my ($key, $value) = split(/=/, $item, 2);
6963: $key = unescape($key) unless $escapedkeys;
6964: next if $key =~ /^error: 2 /;
6965: $returnhash{$key} = &thaw_unescape($value);
6966: }
6967: #return %returnhash;
6968: return \%returnhash;
6969: }
6970:
6971: # see Lond::dump_with_regexp
6972: # if $escapedkeys hash keys won't get unescaped.
6973: sub dump {
6974: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
6975: if (!$udomain) { $udomain=$env{'user.domain'}; }
6976: if (!$uname) { $uname=$env{'user.name'}; }
6977: my $uhome=&homeserver($uname,$udomain);
6978:
6979: if ($regexp) {
6980: $regexp=&escape($regexp);
6981: } else {
6982: $regexp='.';
6983: }
6984: if (grep { $_ eq $uhome } current_machine_ids()) {
6985: # user is hosted on this machine
6986: my $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
6987: $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
6988: return %{unserialize($reply, $escapedkeys)};
6989: }
6990: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
6991: my @pairs=split(/\&/,$rep);
6992: my %returnhash=();
6993: if (!($rep =~ /^error/ )) {
6994: foreach my $item (@pairs) {
6995: my ($key,$value)=split(/=/,$item,2);
6996: $key = unescape($key) unless $escapedkeys;
6997: #$key = &unescape($key);
6998: next if ($key =~ /^error: 2 /);
6999: $returnhash{$key}=&thaw_unescape($value);
7000: }
7001: }
7002: return %returnhash;
7003: }
7004:
7005:
7006: # --------------------------------------------------------- dumpstore interface
7007:
7008: sub dumpstore {
7009: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
7010: # same as dump but keys must be escaped. They may contain colon separated
7011: # lists of values that may themself contain colons (e.g. symbs).
7012: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
7013: }
7014:
7015: # -------------------------------------------------------------- keys interface
7016:
7017: sub getkeys {
7018: my ($namespace,$udomain,$uname)=@_;
7019: if (!$udomain) { $udomain=$env{'user.domain'}; }
7020: if (!$uname) { $uname=$env{'user.name'}; }
7021: my $uhome=&homeserver($uname,$udomain);
7022: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
7023: my @keyarray=();
7024: foreach my $key (split(/\&/,$rep)) {
7025: next if ($key =~ /^error: 2 /);
7026: push(@keyarray,&unescape($key));
7027: }
7028: return @keyarray;
7029: }
7030:
7031: # --------------------------------------------------------------- currentdump
7032: sub currentdump {
7033: my ($courseid,$sdom,$sname)=@_;
7034: $courseid = $env{'request.course.id'} if (! defined($courseid));
7035: $sdom = $env{'user.domain'} if (! defined($sdom));
7036: $sname = $env{'user.name'} if (! defined($sname));
7037: my $uhome = &homeserver($sname,$sdom);
7038: my $rep;
7039:
7040: if (grep { $_ eq $uhome } current_machine_ids()) {
7041: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
7042: $courseid)));
7043: } else {
7044: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
7045: }
7046:
7047: return if ($rep =~ /^(error:|no_such_host)/);
7048: #
7049: my %returnhash=();
7050: #
7051: if ($rep eq 'unknown_cmd') {
7052: # an old lond will not know currentdump
7053: # Do a dump and make it look like a currentdump
7054: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
7055: return if ($tmp[0] =~ /^(error:|no_such_host)/);
7056: my %hash = @tmp;
7057: @tmp=();
7058: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
7059: } else {
7060: my @pairs=split(/\&/,$rep);
7061: foreach my $pair (@pairs) {
7062: my ($key,$value)=split(/=/,$pair,2);
7063: my ($symb,$param) = split(/:/,$key);
7064: $returnhash{&unescape($symb)}->{&unescape($param)} =
7065: &thaw_unescape($value);
7066: }
7067: }
7068: return %returnhash;
7069: }
7070:
7071: sub convert_dump_to_currentdump{
7072: my %hash = %{shift()};
7073: my %returnhash;
7074: # Code ripped from lond, essentially. The only difference
7075: # here is the unescaping done by lonnet::dump(). Conceivably
7076: # we might run in to problems with parameter names =~ /^v\./
7077: while (my ($key,$value) = each(%hash)) {
7078: my ($v,$symb,$param) = split(/:/,$key);
7079: $symb = &unescape($symb);
7080: $param = &unescape($param);
7081: next if ($v eq 'version' || $symb eq 'keys');
7082: next if (exists($returnhash{$symb}) &&
7083: exists($returnhash{$symb}->{$param}) &&
7084: $returnhash{$symb}->{'v.'.$param} > $v);
7085: $returnhash{$symb}->{$param}=$value;
7086: $returnhash{$symb}->{'v.'.$param}=$v;
7087: }
7088: #
7089: # Remove all of the keys in the hashes which keep track of
7090: # the version of the parameter.
7091: while (my ($symb,$param_hash) = each(%returnhash)) {
7092: # use a foreach because we are going to delete from the hash.
7093: foreach my $key (keys(%$param_hash)) {
7094: delete($param_hash->{$key}) if ($key =~ /^v\./);
7095: }
7096: }
7097: return \%returnhash;
7098: }
7099:
7100: # ------------------------------------------------------ critical inc interface
7101:
7102: sub cinc {
7103: return &inc(@_,'critical');
7104: }
7105:
7106: # --------------------------------------------------------------- inc interface
7107:
7108: sub inc {
7109: my ($namespace,$store,$udomain,$uname,$critical) = @_;
7110: if (!$udomain) { $udomain=$env{'user.domain'}; }
7111: if (!$uname) { $uname=$env{'user.name'}; }
7112: my $uhome=&homeserver($uname,$udomain);
7113: my $items='';
7114: if (! ref($store)) {
7115: # got a single value, so use that instead
7116: $items = &escape($store).'=&';
7117: } elsif (ref($store) eq 'SCALAR') {
7118: $items = &escape($$store).'=&';
7119: } elsif (ref($store) eq 'ARRAY') {
7120: $items = join('=&',map {&escape($_);} @{$store});
7121: } elsif (ref($store) eq 'HASH') {
7122: while (my($key,$value) = each(%{$store})) {
7123: $items.= &escape($key).'='.&escape($value).'&';
7124: }
7125: }
7126: $items=~s/\&$//;
7127: if ($critical) {
7128: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
7129: } else {
7130: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
7131: }
7132: }
7133:
7134: # --------------------------------------------------------------- put interface
7135:
7136: sub put {
7137: my ($namespace,$storehash,$udomain,$uname)=@_;
7138: if (!$udomain) { $udomain=$env{'user.domain'}; }
7139: if (!$uname) { $uname=$env{'user.name'}; }
7140: my $uhome=&homeserver($uname,$udomain);
7141: my $items='';
7142: foreach my $item (keys(%$storehash)) {
7143: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
7144: }
7145: $items=~s/\&$//;
7146: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
7147: }
7148:
7149: # ------------------------------------------------------------ newput interface
7150:
7151: sub newput {
7152: my ($namespace,$storehash,$udomain,$uname)=@_;
7153: if (!$udomain) { $udomain=$env{'user.domain'}; }
7154: if (!$uname) { $uname=$env{'user.name'}; }
7155: my $uhome=&homeserver($uname,$udomain);
7156: my $items='';
7157: foreach my $key (keys(%$storehash)) {
7158: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
7159: }
7160: $items=~s/\&$//;
7161: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
7162: }
7163:
7164: # --------------------------------------------------------- putstore interface
7165:
7166: sub putstore {
7167: my ($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog)=@_;
7168: if (!$udomain) { $udomain=$env{'user.domain'}; }
7169: if (!$uname) { $uname=$env{'user.name'}; }
7170: my $uhome=&homeserver($uname,$udomain);
7171: my $items='';
7172: foreach my $key (keys(%$storehash)) {
7173: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
7174: }
7175: $items=~s/\&$//;
7176: my $esc_symb=&escape($symb);
7177: my $esc_v=&escape($version);
7178: my $reply =
7179: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
7180: $uhome);
7181: if (($tolog) && ($reply eq 'ok')) {
7182: my $namevalue='';
7183: foreach my $key (keys(%{$storehash})) {
7184: $namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&';
7185: }
7186: $namevalue .= 'ip='.&escape($ENV{'REMOTE_ADDR'}).
7187: '&host='.&escape($perlvar{'lonHostID'}).
7188: '&version='.$esc_v.
7189: '&by='.&escape($env{'user.name'}.':'.$env{'user.domain'});
7190: &Apache::lonnet::courselog($symb.':'.$uname.':'.$udomain.':PUTSTORE:'.$namevalue);
7191: }
7192: if ($reply eq 'unknown_cmd') {
7193: # gfall back to way things use to be done
7194: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
7195: $uname);
7196: }
7197: return $reply;
7198: }
7199:
7200: sub old_putstore {
7201: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
7202: if (!$udomain) { $udomain=$env{'user.domain'}; }
7203: if (!$uname) { $uname=$env{'user.name'}; }
7204: my $uhome=&homeserver($uname,$udomain);
7205: my %newstorehash;
7206: foreach my $item (keys(%$storehash)) {
7207: my $key = $version.':'.&escape($symb).':'.$item;
7208: $newstorehash{$key} = $storehash->{$item};
7209: }
7210: my $items='';
7211: my %allitems = ();
7212: foreach my $item (keys(%newstorehash)) {
7213: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
7214: my $key = $1.':keys:'.$2;
7215: $allitems{$key} .= $3.':';
7216: }
7217: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
7218: }
7219: foreach my $item (keys(%allitems)) {
7220: $allitems{$item} =~ s/\:$//;
7221: $items.= $item.'='.$allitems{$item}.'&';
7222: }
7223: $items=~s/\&$//;
7224: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
7225: }
7226:
7227: # ------------------------------------------------------ critical put interface
7228:
7229: sub cput {
7230: my ($namespace,$storehash,$udomain,$uname)=@_;
7231: if (!$udomain) { $udomain=$env{'user.domain'}; }
7232: if (!$uname) { $uname=$env{'user.name'}; }
7233: my $uhome=&homeserver($uname,$udomain);
7234: my $items='';
7235: foreach my $item (keys(%$storehash)) {
7236: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
7237: }
7238: $items=~s/\&$//;
7239: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
7240: }
7241:
7242: # -------------------------------------------------------------- eget interface
7243:
7244: sub eget {
7245: my ($namespace,$storearr,$udomain,$uname)=@_;
7246: my $items='';
7247: foreach my $item (@$storearr) {
7248: $items.=&escape($item).'&';
7249: }
7250: $items=~s/\&$//;
7251: if (!$udomain) { $udomain=$env{'user.domain'}; }
7252: if (!$uname) { $uname=$env{'user.name'}; }
7253: my $uhome=&homeserver($uname,$udomain);
7254: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
7255: my @pairs=split(/\&/,$rep);
7256: my %returnhash=();
7257: my $i=0;
7258: foreach my $item (@$storearr) {
7259: $returnhash{$item}=&thaw_unescape($pairs[$i]);
7260: $i++;
7261: }
7262: return %returnhash;
7263: }
7264:
7265: # ------------------------------------------------------------ tmpput interface
7266: sub tmpput {
7267: my ($storehash,$server,$context)=@_;
7268: my $items='';
7269: foreach my $item (keys(%$storehash)) {
7270: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
7271: }
7272: $items=~s/\&$//;
7273: if (defined($context)) {
7274: $items .= ':'.&escape($context);
7275: }
7276: return &reply("tmpput:$items",$server);
7277: }
7278:
7279: # ------------------------------------------------------------ tmpget interface
7280: sub tmpget {
7281: my ($token,$server)=@_;
7282: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
7283: my $rep=&reply("tmpget:$token",$server);
7284: my %returnhash;
7285: if ($rep =~ /^(con_lost|error|no_such_host)/i) {
7286: return %returnhash;
7287: }
7288: foreach my $item (split(/\&/,$rep)) {
7289: my ($key,$value)=split(/=/,$item);
7290: $returnhash{&unescape($key)}=&thaw_unescape($value);
7291: }
7292: return %returnhash;
7293: }
7294:
7295: # ------------------------------------------------------------ tmpdel interface
7296: sub tmpdel {
7297: my ($token,$server)=@_;
7298: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
7299: return &reply("tmpdel:$token",$server);
7300: }
7301:
7302: # ------------------------------------------------------------ get_timebased_id
7303:
7304: sub get_timebased_id {
7305: my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
7306: $maxtries) = @_;
7307: my ($newid,$error,$dellock);
7308: unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
7309: return ('','ok','invalid call to get suffix');
7310: }
7311:
7312: # set defaults for any optional args for which values were not supplied
7313: if ($who eq '') {
7314: $who = $env{'user.name'}.':'.$env{'user.domain'};
7315: }
7316: if (!$locktries) {
7317: $locktries = 3;
7318: }
7319: if (!$maxtries) {
7320: $maxtries = 10;
7321: }
7322:
7323: if (($cdom eq '') || ($cnum eq '')) {
7324: if ($env{'request.course.id'}) {
7325: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7326: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7327: }
7328: if (($cdom eq '') || ($cnum eq '')) {
7329: return ('','ok','call to get suffix not in course context');
7330: }
7331: }
7332:
7333: # construct locking item
7334: my $lockhash = {
7335: $prefix."\0".'locked_'.$keyid => $who,
7336: };
7337: my $tries = 0;
7338:
7339: # attempt to get lock on nohist_$namespace file
7340: my $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
7341: while (($gotlock ne 'ok') && $tries <$locktries) {
7342: $tries ++;
7343: sleep 1;
7344: $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
7345: }
7346:
7347: # attempt to get unique identifier, based on current timestamp
7348: if ($gotlock eq 'ok') {
7349: my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
7350: my $id = time;
7351: $newid = $id;
7352: if ($idtype eq 'addcode') {
7353: $newid .= &sixnum_code();
7354: }
7355: my $idtries = 0;
7356: while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
7357: if ($idtype eq 'concat') {
7358: $newid = $id.$idtries;
7359: } elsif ($idtype eq 'addcode') {
7360: $newid = $newid.&sixnum_code();
7361: } else {
7362: $newid ++;
7363: }
7364: $idtries ++;
7365: }
7366: if (!exists($inuse{$prefix."\0".$newid})) {
7367: my %new_item = (
7368: $prefix."\0".$newid => $who,
7369: );
7370: my $putresult = &Apache::lonnet::put('nohist_'.$namespace,\%new_item,
7371: $cdom,$cnum);
7372: if ($putresult ne 'ok') {
7373: undef($newid);
7374: $error = 'error saving new item: '.$putresult;
7375: }
7376: } else {
7377: undef($newid);
7378: $error = ('error: no unique suffix available for the new item ');
7379: }
7380: # remove lock
7381: my @del_lock = ($prefix."\0".'locked_'.$keyid);
7382: $dellock = &Apache::lonnet::del('nohist_'.$namespace,\@del_lock,$cdom,$cnum);
7383: } else {
7384: $error = "error: could not obtain lockfile\n";
7385: $dellock = 'ok';
7386: if (($prefix eq 'paste') && ($namespace eq 'courseeditor') && ($keyid eq 'num')) {
7387: $dellock = 'nolock';
7388: }
7389: }
7390: return ($newid,$dellock,$error);
7391: }
7392:
7393: sub sixnum_code {
7394: my $code;
7395: for (0..6) {
7396: $code .= int( rand(9) );
7397: }
7398: return $code;
7399: }
7400:
7401: # -------------------------------------------------- portfolio access checking
7402:
7403: sub portfolio_access {
7404: my ($requrl,$clientip) = @_;
7405: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
7406: my $result = &get_portfolio_access($udom,$unum,$file_name,$group,$clientip);
7407: if ($result) {
7408: my %setters;
7409: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
7410: my ($startblock,$endblock) =
7411: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
7412: if ($startblock && $endblock) {
7413: return 'B';
7414: }
7415: } else {
7416: my ($startblock,$endblock) =
7417: &Apache::loncommon::blockcheck(\%setters,'port');
7418: if ($startblock && $endblock) {
7419: return 'B';
7420: }
7421: }
7422: }
7423: if ($result eq 'ok') {
7424: return 'F';
7425: } elsif ($result =~ /^[^:]+:guest_/) {
7426: return 'A';
7427: }
7428: return '';
7429: }
7430:
7431: sub get_portfolio_access {
7432: my ($udom,$unum,$file_name,$group,$clientip,$access_hash) = @_;
7433:
7434: if (!ref($access_hash)) {
7435: my $current_perms = &get_portfile_permissions($udom,$unum);
7436: my %access_controls = &get_access_controls($current_perms,$group,
7437: $file_name);
7438: $access_hash = $access_controls{$file_name};
7439: }
7440:
7441: my ($public,$guest,@domains,@users,@courses,@groups,@ips);
7442: my $now = time;
7443: if (ref($access_hash) eq 'HASH') {
7444: foreach my $key (keys(%{$access_hash})) {
7445: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
7446: if ($start > $now) {
7447: next;
7448: }
7449: if ($end && $end<$now) {
7450: next;
7451: }
7452: if ($scope eq 'public') {
7453: $public = $key;
7454: last;
7455: } elsif ($scope eq 'guest') {
7456: $guest = $key;
7457: } elsif ($scope eq 'domains') {
7458: push(@domains,$key);
7459: } elsif ($scope eq 'users') {
7460: push(@users,$key);
7461: } elsif ($scope eq 'course') {
7462: push(@courses,$key);
7463: } elsif ($scope eq 'group') {
7464: push(@groups,$key);
7465: } elsif ($scope eq 'ip') {
7466: push(@ips,$key);
7467: }
7468: }
7469: if ($public) {
7470: return 'ok';
7471: } elsif (@ips > 0) {
7472: my $allowed;
7473: foreach my $ipkey (@ips) {
7474: if (ref($access_hash->{$ipkey}{'ip'}) eq 'ARRAY') {
7475: if (&Apache::loncommon::check_ip_acc(join(',',@{$access_hash->{$ipkey}{'ip'}}),$clientip)) {
7476: $allowed = 1;
7477: last;
7478: }
7479: }
7480: }
7481: if ($allowed) {
7482: return 'ok';
7483: }
7484: }
7485: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
7486: if ($guest) {
7487: return $guest;
7488: }
7489: } else {
7490: if (@domains > 0) {
7491: foreach my $domkey (@domains) {
7492: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
7493: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
7494: return 'ok';
7495: }
7496: }
7497: }
7498: }
7499: if (@users > 0) {
7500: foreach my $userkey (@users) {
7501: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
7502: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
7503: if (ref($item) eq 'HASH') {
7504: if (($item->{'uname'} eq $env{'user.name'}) &&
7505: ($item->{'udom'} eq $env{'user.domain'})) {
7506: return 'ok';
7507: }
7508: }
7509: }
7510: }
7511: }
7512: }
7513: my %roleshash;
7514: my @courses_and_groups = @courses;
7515: push(@courses_and_groups,@groups);
7516: if (@courses_and_groups > 0) {
7517: my (%allgroups,%allroles);
7518: my ($start,$end,$role,$sec,$group);
7519: foreach my $envkey (%env) {
7520: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
7521: my $cid = $2.'_'.$3;
7522: if ($1 eq 'gr') {
7523: $group = $4;
7524: $allgroups{$cid}{$group} = $env{$envkey};
7525: } else {
7526: if ($4 eq '') {
7527: $sec = 'none';
7528: } else {
7529: $sec = $4;
7530: }
7531: $allroles{$cid}{$1}{$sec} = $env{$envkey};
7532: }
7533: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
7534: my $cid = $2.'_'.$3;
7535: if ($4 eq '') {
7536: $sec = 'none';
7537: } else {
7538: $sec = $4;
7539: }
7540: $allroles{$cid}{$1}{$sec} = $env{$envkey};
7541: }
7542: }
7543: if (keys(%allroles) == 0) {
7544: return;
7545: }
7546: foreach my $key (@courses_and_groups) {
7547: my %content = %{$$access_hash{$key}};
7548: my $cnum = $content{'number'};
7549: my $cdom = $content{'domain'};
7550: my $cid = $cdom.'_'.$cnum;
7551: if (!exists($allroles{$cid})) {
7552: next;
7553: }
7554: foreach my $role_id (keys(%{$content{'roles'}})) {
7555: my @sections = @{$content{'roles'}{$role_id}{'section'}};
7556: my @groups = @{$content{'roles'}{$role_id}{'group'}};
7557: my @status = @{$content{'roles'}{$role_id}{'access'}};
7558: my @roles = @{$content{'roles'}{$role_id}{'role'}};
7559: foreach my $role (keys(%{$allroles{$cid}})) {
7560: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
7561: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
7562: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
7563: if (grep/^all$/,@sections) {
7564: return 'ok';
7565: } else {
7566: if (grep/^$sec$/,@sections) {
7567: return 'ok';
7568: }
7569: }
7570: }
7571: }
7572: if (keys(%{$allgroups{$cid}}) == 0) {
7573: if (grep/^none$/,@groups) {
7574: return 'ok';
7575: }
7576: } else {
7577: if (grep/^all$/,@groups) {
7578: return 'ok';
7579: }
7580: foreach my $group (keys(%{$allgroups{$cid}})) {
7581: if (grep/^$group$/,@groups) {
7582: return 'ok';
7583: }
7584: }
7585: }
7586: }
7587: }
7588: }
7589: }
7590: }
7591: if ($guest) {
7592: return $guest;
7593: }
7594: }
7595: }
7596: return;
7597: }
7598:
7599: sub course_group_datechecker {
7600: my ($dates,$now,$status) = @_;
7601: my ($start,$end) = split(/\./,$dates);
7602: if (!$start && !$end) {
7603: return 'ok';
7604: }
7605: if (grep/^active$/,@{$status}) {
7606: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
7607: return 'ok';
7608: }
7609: }
7610: if (grep/^previous$/,@{$status}) {
7611: if ($end > $now ) {
7612: return 'ok';
7613: }
7614: }
7615: if (grep/^future$/,@{$status}) {
7616: if ($start > $now) {
7617: return 'ok';
7618: }
7619: }
7620: return;
7621: }
7622:
7623: sub parse_portfolio_url {
7624: my ($url) = @_;
7625:
7626: my ($type,$udom,$unum,$group,$file_name);
7627:
7628: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
7629: $type = 1;
7630: $udom = $1;
7631: $unum = $2;
7632: $file_name = $3;
7633: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
7634: $type = 2;
7635: $udom = $1;
7636: $unum = $2;
7637: $group = $3;
7638: $file_name = $3.'/'.$4;
7639: }
7640: if (wantarray) {
7641: return ($type,$udom,$unum,$file_name,$group);
7642: }
7643: return $type;
7644: }
7645:
7646: sub is_portfolio_url {
7647: my ($url) = @_;
7648: return scalar(&parse_portfolio_url($url));
7649: }
7650:
7651: sub is_portfolio_file {
7652: my ($file) = @_;
7653: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
7654: return 1;
7655: }
7656: return;
7657: }
7658:
7659: sub usertools_access {
7660: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
7661: my ($access,%tools);
7662: if ($context eq '') {
7663: $context = 'tools';
7664: }
7665: if ($context eq 'requestcourses') {
7666: %tools = (
7667: official => 1,
7668: unofficial => 1,
7669: community => 1,
7670: textbook => 1,
7671: placement => 1,
7672: lti => 1,
7673: );
7674: } elsif ($context eq 'requestauthor') {
7675: %tools = (
7676: requestauthor => 1,
7677: );
7678: } else {
7679: %tools = (
7680: aboutme => 1,
7681: blog => 1,
7682: webdav => 1,
7683: portfolio => 1,
7684: );
7685: }
7686: return if (!defined($tools{$tool}));
7687:
7688: if (($udom eq '') || ($uname eq '')) {
7689: $udom = $env{'user.domain'};
7690: $uname = $env{'user.name'};
7691: }
7692:
7693: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7694: if ($action ne 'reload') {
7695: if ($context eq 'requestcourses') {
7696: return $env{'environment.canrequest.'.$tool};
7697: } elsif ($context eq 'requestauthor') {
7698: return $env{'environment.canrequest.author'};
7699: } else {
7700: return $env{'environment.availabletools.'.$tool};
7701: }
7702: }
7703: }
7704:
7705: my ($toolstatus,$inststatus,$envkey);
7706: if ($context eq 'requestauthor') {
7707: $envkey = $context;
7708: } else {
7709: $envkey = $context.'.'.$tool;
7710: }
7711:
7712: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
7713: ($action ne 'reload')) {
7714: $toolstatus = $env{'environment.'.$envkey};
7715: $inststatus = $env{'environment.inststatus'};
7716: } else {
7717: if (ref($userenvref) eq 'HASH') {
7718: $toolstatus = $userenvref->{$envkey};
7719: $inststatus = $userenvref->{'inststatus'};
7720: } else {
7721: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
7722: $toolstatus = $userenv{$envkey};
7723: $inststatus = $userenv{'inststatus'};
7724: }
7725: }
7726:
7727: if ($toolstatus ne '') {
7728: if ($toolstatus) {
7729: $access = 1;
7730: } else {
7731: $access = 0;
7732: }
7733: return $access;
7734: }
7735:
7736: my ($is_adv,%domdef);
7737: if (ref($is_advref) eq 'HASH') {
7738: $is_adv = $is_advref->{'is_adv'};
7739: } else {
7740: $is_adv = &is_advanced_user($udom,$uname);
7741: }
7742: if (ref($domdefref) eq 'HASH') {
7743: %domdef = %{$domdefref};
7744: } else {
7745: %domdef = &get_domain_defaults($udom);
7746: }
7747: if (ref($domdef{$tool}) eq 'HASH') {
7748: if ($is_adv) {
7749: if ($domdef{$tool}{'_LC_adv'} ne '') {
7750: if ($domdef{$tool}{'_LC_adv'}) {
7751: $access = 1;
7752: } else {
7753: $access = 0;
7754: }
7755: return $access;
7756: }
7757: }
7758: if ($inststatus ne '') {
7759: my ($hasaccess,$hasnoaccess);
7760: foreach my $affiliation (split(/:/,$inststatus)) {
7761: if ($domdef{$tool}{$affiliation} ne '') {
7762: if ($domdef{$tool}{$affiliation}) {
7763: $hasaccess = 1;
7764: } else {
7765: $hasnoaccess = 1;
7766: }
7767: }
7768: }
7769: if ($hasaccess || $hasnoaccess) {
7770: if ($hasaccess) {
7771: $access = 1;
7772: } elsif ($hasnoaccess) {
7773: $access = 0;
7774: }
7775: return $access;
7776: }
7777: } else {
7778: if ($domdef{$tool}{'default'} ne '') {
7779: if ($domdef{$tool}{'default'}) {
7780: $access = 1;
7781: } elsif ($domdef{$tool}{'default'} == 0) {
7782: $access = 0;
7783: }
7784: return $access;
7785: }
7786: }
7787: } else {
7788: if (($context eq 'tools') && ($tool ne 'webdav')) {
7789: $access = 1;
7790: } else {
7791: $access = 0;
7792: }
7793: return $access;
7794: }
7795: }
7796:
7797: sub is_course_owner {
7798: my ($cdom,$cnum,$udom,$uname) = @_;
7799: if (($udom eq '') || ($uname eq '')) {
7800: $udom = $env{'user.domain'};
7801: $uname = $env{'user.name'};
7802: }
7803: unless (($udom eq '') || ($uname eq '')) {
7804: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
7805: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
7806: return 1;
7807: } else {
7808: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
7809: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
7810: return 1;
7811: }
7812: }
7813: }
7814: }
7815: return;
7816: }
7817:
7818: sub is_advanced_user {
7819: my ($udom,$uname) = @_;
7820: if ($udom ne '' && $uname ne '') {
7821: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7822: if (wantarray) {
7823: return ($env{'user.adv'},$env{'user.author'});
7824: } else {
7825: return $env{'user.adv'};
7826: }
7827: }
7828: }
7829: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
7830: my %allroles;
7831: my ($is_adv,$is_author);
7832: foreach my $role (keys(%roleshash)) {
7833: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
7834: my $area = '/'.$tdomain.'/'.$trest;
7835: if ($sec ne '') {
7836: $area .= '/'.$sec;
7837: }
7838: if (($area ne '') && ($trole ne '')) {
7839: my $spec=$trole.'.'.$area;
7840: if ($trole =~ /^cr\//) {
7841: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
7842: } elsif ($trole ne 'gr') {
7843: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
7844: }
7845: if ($trole eq 'au') {
7846: $is_author = 1;
7847: }
7848: }
7849: }
7850: foreach my $role (keys(%allroles)) {
7851: last if ($is_adv);
7852: foreach my $item (split(/:/,$allroles{$role})) {
7853: if ($item ne '') {
7854: my ($privilege,$restrictions)=split(/&/,$item);
7855: if ($privilege eq 'adv') {
7856: $is_adv = 1;
7857: last;
7858: }
7859: }
7860: }
7861: }
7862: if (wantarray) {
7863: return ($is_adv,$is_author);
7864: }
7865: return $is_adv;
7866: }
7867:
7868: sub check_can_request {
7869: my ($dom,$can_request,$request_domains,$uname,$udom) = @_;
7870: my $canreq = 0;
7871: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
7872: $uname = $env{'user.name'};
7873: $udom = $env{'user.domain'};
7874: }
7875: my ($types,$typename) = &Apache::loncommon::course_types();
7876: my @options = ('approval','validate','autolimit');
7877: my $optregex = join('|',@options);
7878: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
7879: foreach my $type (@{$types}) {
7880: if (&usertools_access($uname,$udom,$type,undef,
7881: 'requestcourses')) {
7882: $canreq ++;
7883: if (ref($request_domains) eq 'HASH') {
7884: push(@{$request_domains->{$type}},$udom);
7885: }
7886: if ($dom eq $udom) {
7887: $can_request->{$type} = 1;
7888: }
7889: }
7890: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '') &&
7891: ($env{'environment.reqcrsotherdom.'.$type} ne '')) {
7892: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
7893: if (@curr > 0) {
7894: foreach my $item (@curr) {
7895: if (ref($request_domains) eq 'HASH') {
7896: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
7897: if ($otherdom ne '') {
7898: if (ref($request_domains->{$type}) eq 'ARRAY') {
7899: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
7900: push(@{$request_domains->{$type}},$otherdom);
7901: }
7902: } else {
7903: push(@{$request_domains->{$type}},$otherdom);
7904: }
7905: }
7906: }
7907: }
7908: unless ($dom eq $env{'user.domain'}) {
7909: $canreq ++;
7910: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
7911: $can_request->{$type} = 1;
7912: }
7913: }
7914: }
7915: }
7916: }
7917: }
7918: return $canreq;
7919: }
7920:
7921: # ---------------------------------------------- Custom access rule evaluation
7922:
7923: sub customaccess {
7924: my ($priv,$uri)=@_;
7925: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
7926: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
7927: $udom = &LONCAPA::clean_domain($udom);
7928: $ucrs = &LONCAPA::clean_username($ucrs);
7929: my $access=0;
7930: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
7931: my ($effect,$realm,$role,$type)=split(/\:/,$right);
7932: if ($type eq 'user') {
7933: foreach my $scope (split(/\s*\,\s*/,$realm)) {
7934: my ($tdom,$tuname)=split(m{/},$scope);
7935: if ($tdom) {
7936: if ($tdom ne $env{'user.domain'}) { next; }
7937: }
7938: if ($tuname) {
7939: if ($tuname ne $env{'user.name'}) { next; }
7940: }
7941: $access=($effect eq 'allow');
7942: last;
7943: }
7944: } else {
7945: if ($role) {
7946: if ($role ne $urole) { next; }
7947: }
7948: foreach my $scope (split(/\s*\,\s*/,$realm)) {
7949: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
7950: if ($tdom) {
7951: if ($tdom ne $udom) { next; }
7952: }
7953: if ($tcrs) {
7954: if ($tcrs ne $ucrs) { next; }
7955: }
7956: if ($tsec) {
7957: if ($tsec ne $usec) { next; }
7958: }
7959: $access=($effect eq 'allow');
7960: last;
7961: }
7962: if ($realm eq '' && $role eq '') {
7963: $access=($effect eq 'allow');
7964: }
7965: }
7966: }
7967: return $access;
7968: }
7969:
7970: # ------------------------------------------------- Check for a user privilege
7971:
7972: sub allowed {
7973: my ($priv,$uri,$symb,$role,$clientip,$noblockcheck)=@_;
7974: my $ver_orguri=$uri;
7975: $uri=&deversion($uri);
7976: my $orguri=$uri;
7977: $uri=&declutter($uri);
7978:
7979: if ($priv eq 'evb') {
7980: # Evade communication block restrictions for specified role in a course
7981: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
7982: return $1;
7983: } else {
7984: return;
7985: }
7986: }
7987:
7988: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
7989: # Free bre access to adm and meta resources
7990: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard|ext\.tool)$}))
7991: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
7992: && ($priv eq 'bre')) {
7993: return 'F';
7994: }
7995:
7996: # Free bre access to user's own portfolio contents
7997: my ($space,$domain,$name,@dir)=split('/',$uri);
7998: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
7999: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
8000: my %setters;
8001: my ($startblock,$endblock) =
8002: &Apache::loncommon::blockcheck(\%setters,'port');
8003: if ($startblock && $endblock) {
8004: return 'B';
8005: } else {
8006: return 'F';
8007: }
8008: }
8009:
8010: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
8011: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
8012: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
8013: if (exists($env{'request.course.id'})) {
8014: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8015: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
8016: if (($domain eq $cdom) && ($name eq $cnum)) {
8017: my $courseprivid=$env{'request.course.id'};
8018: $courseprivid=~s/\_/\//;
8019: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
8020: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
8021: return $1;
8022: } else {
8023: if ($env{'request.course.sec'}) {
8024: $courseprivid.='/'.$env{'request.course.sec'};
8025: }
8026: if ($env{'user.priv.'.$env{'request.role'}.'./'.
8027: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
8028: return $2;
8029: }
8030: }
8031: }
8032: }
8033: }
8034:
8035: # Free bre to public access
8036:
8037: if ($priv eq 'bre') {
8038: my $copyright;
8039: unless ($uri =~ /ext\.tool/) {
8040: $copyright=&metadata($uri,'copyright');
8041: }
8042: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
8043: return 'F';
8044: }
8045: if ($copyright eq 'priv') {
8046: $uri=~/([^\/]+)\/([^\/]+)\//;
8047: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
8048: return '';
8049: }
8050: }
8051: if ($copyright eq 'domain') {
8052: $uri=~/([^\/]+)\/([^\/]+)\//;
8053: unless (($env{'user.domain'} eq $1) ||
8054: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
8055: return '';
8056: }
8057: }
8058: if ($env{'request.role'}=~ /li\.\//) {
8059: # Library role, so allow browsing of resources in this domain.
8060: return 'F';
8061: }
8062: if ($copyright eq 'custom') {
8063: unless (&customaccess($priv,$uri)) { return ''; }
8064: }
8065: }
8066: # Domain coordinator is trying to create a course
8067: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
8068: # uri is the requested domain in this case.
8069: # comparison to 'request.role.domain' shows if the user has selected
8070: # a role of dc for the domain in question.
8071: return 'F' if ($uri eq $env{'request.role.domain'});
8072: }
8073:
8074: my $thisallowed='';
8075: my $statecond=0;
8076: my $courseprivid='';
8077:
8078: my $ownaccess;
8079: # Community Coordinator or Assistant Co-author browsing resource space.
8080: if (($priv eq 'bro') && ($env{'user.author'})) {
8081: if ($uri eq '') {
8082: $ownaccess = 1;
8083: } else {
8084: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
8085: my $udom = $env{'user.domain'};
8086: my $uname = $env{'user.name'};
8087: if ($uri =~ m{^\Q$udom\E/?$}) {
8088: $ownaccess = 1;
8089: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
8090: unless ($uri =~ m{\.\./}) {
8091: $ownaccess = 1;
8092: }
8093: } elsif (($udom ne 'public') && ($uname ne 'public')) {
8094: my $now = time;
8095: if ($uri =~ m{^([^/]+)/?$}) {
8096: my $adom = $1;
8097: foreach my $key (keys(%env)) {
8098: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
8099: my ($start,$end) = split('.',$env{$key});
8100: if (($now >= $start) && (!$end || $end < $now)) {
8101: $ownaccess = 1;
8102: last;
8103: }
8104: }
8105: }
8106: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
8107: my $adom = $1;
8108: my $aname = $2;
8109: foreach my $role ('ca','aa') {
8110: if ($env{"user.role.$role./$adom/$aname"}) {
8111: my ($start,$end) =
8112: split('.',$env{"user.role.$role./$adom/$aname"});
8113: if (($now >= $start) && (!$end || $end < $now)) {
8114: $ownaccess = 1;
8115: last;
8116: }
8117: }
8118: }
8119: }
8120: }
8121: }
8122: }
8123: }
8124:
8125: # Course
8126:
8127: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
8128: unless (($priv eq 'bro') && (!$ownaccess)) {
8129: $thisallowed.=$1;
8130: }
8131: }
8132:
8133: # Domain
8134:
8135: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
8136: =~/\Q$priv\E\&([^\:]*)/) {
8137: unless (($priv eq 'bro') && (!$ownaccess)) {
8138: $thisallowed.=$1;
8139: }
8140: }
8141:
8142: # User who is not author or co-author might still be able to edit
8143: # resource of an author in the domain (e.g., if Domain Coordinator).
8144: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
8145: (&allowed('mdc',$env{'request.course.id'}))) {
8146: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
8147: $thisallowed.=$1;
8148: }
8149: }
8150:
8151: # Course: uri itself is a course
8152: my $courseuri=$uri;
8153: $courseuri=~s/\_(\d)/\/$1/;
8154: $courseuri=~s/^([^\/])/\/$1/;
8155:
8156: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
8157: =~/\Q$priv\E\&([^\:]*)/) {
8158: if ($priv eq 'mip') {
8159: my $rem = $1;
8160: if (($uri ne '') && ($env{'request.course.id'} eq $uri) &&
8161: ($env{'course.'.$env{'request.course.id'}.'.internal.courseowner'} eq $env{'user.name'}.':'.$env{'user.domain'})) {
8162: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8163: if ($cdom ne '') {
8164: my %passwdconf = &get_passwdconf($cdom);
8165: if (ref($passwdconf{'crsownerchg'}) eq 'HASH') {
8166: if (ref($passwdconf{'crsownerchg'}{'by'}) eq 'ARRAY') {
8167: if (@{$passwdconf{'crsownerchg'}{'by'}}) {
8168: my @inststatuses = split(':',$env{'environment.inststatus'});
8169: unless (@inststatuses) {
8170: @inststatuses = ('default');
8171: }
8172: foreach my $status (@inststatuses) {
8173: if (grep(/^\Q$status\E$/,@{$passwdconf{'crsownerchg'}{'by'}})) {
8174: $thisallowed.=$rem;
8175: }
8176: }
8177: }
8178: }
8179: }
8180: }
8181: }
8182: } else {
8183: unless (($priv eq 'bro') && (!$ownaccess)) {
8184: $thisallowed.=$1;
8185: }
8186: }
8187: }
8188:
8189: # URI is an uploaded document for this course, default permissions don't matter
8190: # not allowing 'edit' access (editupload) to uploaded course docs
8191: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
8192: $thisallowed='';
8193: my ($match)=&is_on_map($uri);
8194: if ($match) {
8195: if ($env{'user.priv.'.$env{'request.role'}.'./'}
8196: =~/\Q$priv\E\&([^\:]*)/) {
8197: my $value = $1;
8198: my $deeplinkblock = &deeplink_check($priv,$symb,$uri);
8199: if ($deeplinkblock) {
8200: $thisallowed='D';
8201: } elsif ($noblockcheck) {
8202: $thisallowed.=$value;
8203: } else {
8204: my @blockers = &has_comm_blocking($priv,$symb,$uri);
8205: if (@blockers > 0) {
8206: $thisallowed = 'B';
8207: } else {
8208: $thisallowed.=$value;
8209: }
8210: }
8211: }
8212: } else {
8213: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
8214: if ($refuri) {
8215: if ($refuri =~ m|^/adm/|) {
8216: $thisallowed='F';
8217: } else {
8218: $refuri=&declutter($refuri);
8219: my ($match) = &is_on_map($refuri);
8220: if ($match) {
8221: my $deeplinkblock = &deeplink_check($priv,$symb,$refuri);
8222: if ($deeplinkblock) {
8223: $thisallowed='D';
8224: } elsif ($noblockcheck) {
8225: $thisallowed='F';
8226: } else {
8227: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
8228: if (@blockers > 0) {
8229: $thisallowed = 'B';
8230: } else {
8231: $thisallowed='F';
8232: }
8233: }
8234: }
8235: }
8236: }
8237: }
8238: }
8239:
8240: if ($priv eq 'bre'
8241: && $thisallowed ne 'F'
8242: && $thisallowed ne '2'
8243: && &is_portfolio_url($uri)) {
8244: $thisallowed = &portfolio_access($uri,$clientip);
8245: }
8246:
8247: # Full access at system, domain or course-wide level? Exit.
8248: if ($thisallowed=~/F/) {
8249: return 'F';
8250: }
8251:
8252: # If this is generating or modifying users, exit with special codes
8253:
8254: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
8255: if (($priv eq 'cca') || ($priv eq 'caa')) {
8256: my ($audom,$auname)=split('/',$uri);
8257: # no author name given, so this just checks on the general right to make a co-author in this domain
8258: unless ($auname) { return $thisallowed; }
8259: # an author name is given, so we are about to actually make a co-author for a certain account
8260: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
8261: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
8262: ($audom ne $env{'request.role.domain'}))) { return ''; }
8263: }
8264: return $thisallowed;
8265: }
8266: #
8267: # Gathered so far: system, domain and course wide privileges
8268: #
8269: # Course: See if uri or referer is an individual resource that is part of
8270: # the course
8271:
8272: if ($env{'request.course.id'}) {
8273:
8274: # If this is modifying password (internal auth) domains must match for user and user's role.
8275:
8276: if ($priv eq 'mip') {
8277: if ($env{'user.domain'} eq $env{'request.role.domain'}) {
8278: return $thisallowed;
8279: } else {
8280: return '';
8281: }
8282: }
8283:
8284: $courseprivid=$env{'request.course.id'};
8285: if ($env{'request.course.sec'}) {
8286: $courseprivid.='/'.$env{'request.course.sec'};
8287: }
8288: $courseprivid=~s/\_/\//;
8289: my $checkreferer=1;
8290: my ($match,$cond)=&is_on_map($uri);
8291: if ($match) {
8292: $statecond=$cond;
8293: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
8294: =~/\Q$priv\E\&([^\:]*)/) {
8295: my $value = $1;
8296: if ($priv eq 'bre') {
8297: if ($noblockcheck) {
8298: $thisallowed.=$value;
8299: } else {
8300: my @blockers = &has_comm_blocking($priv,$symb,$uri);
8301: if (@blockers > 0) {
8302: $thisallowed = 'B';
8303: } else {
8304: $thisallowed.=$value;
8305: }
8306: }
8307: } else {
8308: $thisallowed.=$value;
8309: }
8310: $checkreferer=0;
8311: }
8312: }
8313:
8314: if ($checkreferer) {
8315: my $refuri=$env{'httpref.'.$orguri};
8316: unless ($refuri) {
8317: foreach my $key (keys(%env)) {
8318: if ($key=~/^httpref\..*\*/) {
8319: my $pattern=$key;
8320: $pattern=~s/^httpref\.\/res\///;
8321: $pattern=~s/\*/\[\^\/\]\+/g;
8322: $pattern=~s/\//\\\//g;
8323: if ($orguri=~/$pattern/) {
8324: $refuri=$env{$key};
8325: }
8326: }
8327: }
8328: }
8329:
8330: if ($refuri) {
8331: $refuri=&declutter($refuri);
8332: my ($match,$cond)=&is_on_map($refuri);
8333: if ($match) {
8334: my $refstatecond=$cond;
8335: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
8336: =~/\Q$priv\E\&([^\:]*)/) {
8337: my $value = $1;
8338: if ($priv eq 'bre') {
8339: my $deeplinkblock = &deeplink_check($priv,$symb,$refuri);
8340: if ($deeplinkblock) {
8341: $thisallowed = 'D';
8342: } elsif ($noblockcheck) {
8343: $thisallowed.=$value;
8344: } else {
8345: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
8346: if (@blockers > 0) {
8347: $thisallowed = 'B';
8348: } else {
8349: $thisallowed.=$value;
8350: }
8351: }
8352: } else {
8353: $thisallowed.=$value;
8354: }
8355: $uri=$refuri;
8356: $statecond=$refstatecond;
8357: }
8358: }
8359: }
8360: }
8361: }
8362:
8363: #
8364: # Gathered now: all privileges that could apply, and condition number
8365: #
8366: #
8367: # Full or no access?
8368: #
8369:
8370: if ($thisallowed=~/F/) {
8371: return 'F';
8372: }
8373:
8374: unless ($thisallowed) {
8375: return '';
8376: }
8377:
8378: # Restrictions exist, deal with them
8379: #
8380: # C:according to course preferences
8381: # R:according to resource settings
8382: # L:unless locked
8383: # X:according to user session state
8384: #
8385:
8386: # Possibly locked functionality, check all courses
8387: # Locks might take effect only after 10 minutes cache expiration for other
8388: # courses, and 2 minutes for current course
8389:
8390: my $envkey;
8391: if ($thisallowed=~/L/) {
8392: foreach $envkey (keys(%env)) {
8393: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
8394: my $courseid=$2;
8395: my $roleid=$1.'.'.$2;
8396: $courseid=~s/^\///;
8397: my $expiretime=600;
8398: if ($env{'request.role'} eq $roleid) {
8399: $expiretime=120;
8400: }
8401: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
8402: my $prefix='course.'.$cdom.'_'.$cnum.'.';
8403: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
8404: &coursedescription($courseid,{'freshen_cache' => 1});
8405: }
8406: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
8407: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
8408: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
8409: &log($env{'user.domain'},$env{'user.name'},
8410: $env{'user.home'},
8411: 'Locked by res: '.$priv.' for '.$uri.' due to '.
8412: $cdom.'/'.$cnum.'/'.$csec.' expire '.
8413: $env{$prefix.'priv.'.$priv.'.lock.expire'});
8414: return '';
8415: }
8416: }
8417: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
8418: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
8419: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
8420: &log($env{'user.domain'},$env{'user.name'},
8421: $env{'user.home'},
8422: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
8423: $cdom.'/'.$cnum.'/'.$csec.' expire '.
8424: $env{$prefix.'priv.'.$priv.'.lock.expire'});
8425: return '';
8426: }
8427: }
8428: }
8429: }
8430: }
8431:
8432: #
8433: # Rest of the restrictions depend on selected course
8434: #
8435:
8436: unless ($env{'request.course.id'}) {
8437: if ($thisallowed eq 'A') {
8438: return 'A';
8439: } elsif ($thisallowed eq 'B') {
8440: return 'B';
8441: } else {
8442: return '1';
8443: }
8444: }
8445:
8446: #
8447: # Now user is definitely in a course
8448: #
8449:
8450:
8451: # Course preferences
8452:
8453: if ($thisallowed=~/C/) {
8454: my $rolecode=(split(/\./,$env{'request.role'}))[0];
8455: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
8456: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
8457: =~/\Q$rolecode\E/) {
8458: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
8459: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
8460: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
8461: $env{'request.course.id'});
8462: }
8463: return '';
8464: }
8465:
8466: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
8467: =~/\Q$unamedom\E/) {
8468: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
8469: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
8470: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
8471: $env{'request.course.id'});
8472: }
8473: return '';
8474: }
8475: }
8476:
8477: # Resource preferences
8478:
8479: if ($thisallowed=~/R/) {
8480: my $rolecode=(split(/\./,$env{'request.role'}))[0];
8481: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
8482: if (($priv ne 'pch') && ($priv ne 'plc')) {
8483: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
8484: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
8485: }
8486: return '';
8487: }
8488: }
8489:
8490: # Restricted by state or randomout?
8491:
8492: if ($thisallowed=~/X/) {
8493: if ($env{'acc.randomout'}) {
8494: if (!$symb) { $symb=&symbread($uri,1); }
8495: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
8496: return '';
8497: }
8498: }
8499: if (&condval($statecond)) {
8500: return '2';
8501: } else {
8502: return '';
8503: }
8504: }
8505:
8506: if ($thisallowed eq 'A') {
8507: return 'A';
8508: } elsif ($thisallowed eq 'B') {
8509: return 'B';
8510: } elsif ($thisallowed eq 'D') {
8511: return 'D';
8512: }
8513: return 'F';
8514: }
8515:
8516: # ------------------------------------------- Check construction space access
8517:
8518: sub constructaccess {
8519: my ($url,$setpriv)=@_;
8520:
8521: # We do not allow editing of previous versions of files
8522: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
8523:
8524: # Get username and domain from URL
8525: my ($ownername,$ownerdomain,$ownerhome);
8526:
8527: ($ownerdomain,$ownername) =
8528: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)(?:/daxepage|/daxeopen)?/priv/($match_domain)/($match_username)(?:/|$)});
8529:
8530: # The URL does not really point to any authorspace, forget it
8531: unless (($ownername) && ($ownerdomain)) { return ''; }
8532:
8533: # Now we need to see if the user has access to the authorspace of
8534: # $ownername at $ownerdomain
8535:
8536: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
8537: # Real author for this?
8538: $ownerhome = $env{'user.home'};
8539: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
8540: return ($ownername,$ownerdomain,$ownerhome);
8541: }
8542: } else {
8543: # Co-author for this?
8544: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
8545: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
8546: $ownerhome = &homeserver($ownername,$ownerdomain);
8547: return ($ownername,$ownerdomain,$ownerhome);
8548: }
8549: if ($env{'request.course.id'}) {
8550: if (($ownername eq $env{'course.'.$env{'request.course.id'}.'.num'}) &&
8551: ($ownerdomain eq $env{'course.'.$env{'request.course.id'}.'.domain'})) {
8552: if (&allowed('mdc',$env{'request.course.id'})) {
8553: $ownerhome = $env{'course.'.$env{'request.course.id'}.'.home'};
8554: return ($ownername,$ownerdomain,$ownerhome);
8555: }
8556: }
8557: }
8558: }
8559:
8560: # We don't have any access right now. If we are not possibly going to do anything about this,
8561: # we might as well leave
8562: unless ($setpriv) { return ''; }
8563:
8564: # Backdoor access?
8565: my $allowed=&allowed('eco',$ownerdomain);
8566: # Nope
8567: unless ($allowed) { return ''; }
8568: # Looks like we may have access, but could be locked by the owner of the construction space
8569: if ($allowed eq 'U') {
8570: my %blocked=&get('environment',['domcoord.author'],
8571: $ownerdomain,$ownername);
8572: # Is blocked by owner
8573: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
8574: }
8575: if (($allowed eq 'F') || ($allowed eq 'U')) {
8576: # Grant temporary access
8577: my $then=$env{'user.login.time'};
8578: my $update=$env{'user.update.time'};
8579: if (!$update) { $update = $then; }
8580: my $refresh=$env{'user.refresh.time'};
8581: if (!$refresh) { $refresh = $update; }
8582: my $now = time;
8583: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
8584: $now,'ca','constructaccess');
8585: $ownerhome = &homeserver($ownername,$ownerdomain);
8586: return($ownername,$ownerdomain,$ownerhome);
8587: }
8588: # No business here
8589: return '';
8590: }
8591:
8592: # ----------------------------------------------------------- Content Blocking
8593:
8594: {
8595: # Caches for faster Course Contents display where content blocking
8596: # is in operation (i.e., interval param set) for timed quiz.
8597: #
8598: # User for whom data are being temporarily cached.
8599: my $cacheduser='';
8600: # Cached blockers for this user (a hash of blocking items).
8601: my %cachedblockers=();
8602: # When the data were last cached.
8603: my $cachedlast='';
8604:
8605: sub load_all_blockers {
8606: my ($uname,$udom,$blocks)=@_;
8607: if (($uname ne '') && ($udom ne '')) {
8608: if (($cacheduser eq $uname.':'.$udom) &&
8609: (abs($cachedlast-time)<5)) {
8610: return;
8611: }
8612: }
8613: $cachedlast=time;
8614: $cacheduser=$uname.':'.$udom;
8615: %cachedblockers = &get_commblock_resources($blocks);
8616: }
8617:
8618: sub get_comm_blocks {
8619: my ($cdom,$cnum) = @_;
8620: if ($cdom eq '' || $cnum eq '') {
8621: return unless ($env{'request.course.id'});
8622: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
8623: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8624: }
8625: my %commblocks;
8626: my $hashid=$cdom.'_'.$cnum;
8627: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
8628: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
8629: %commblocks = %{$blocksref};
8630: } else {
8631: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
8632: my $cachetime = 600;
8633: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
8634: }
8635: return %commblocks;
8636: }
8637:
8638: sub get_commblock_resources {
8639: my ($blocks) = @_;
8640: my %blockers = ();
8641: return %blockers unless ($env{'request.course.id'});
8642: return %blockers if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
8643: my %commblocks;
8644: if (ref($blocks) eq 'HASH') {
8645: %commblocks = %{$blocks};
8646: } else {
8647: %commblocks = &get_comm_blocks();
8648: }
8649: return %blockers unless (keys(%commblocks) > 0);
8650: my $navmap = Apache::lonnavmaps::navmap->new();
8651: return %blockers unless (ref($navmap));
8652: my $now = time;
8653: foreach my $block (keys(%commblocks)) {
8654: if ($block =~ /^(\d+)____(\d+)$/) {
8655: my ($start,$end) = ($1,$2);
8656: if ($start <= $now && $end >= $now) {
8657: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
8658: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
8659: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
8660: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
8661: $blockers{$block}{maps} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
8662: }
8663: }
8664: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
8665: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
8666: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
8667: }
8668: }
8669: }
8670: }
8671: }
8672: } elsif ($block =~ /^firstaccess____(.+)$/) {
8673: my $item = $1;
8674: my @to_test;
8675: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
8676: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
8677: my @interval;
8678: my $type = 'map';
8679: if ($item eq 'course') {
8680: $type = 'course';
8681: @interval=&EXT("resource.0.interval");
8682: } else {
8683: if ($item =~ /___\d+___/) {
8684: $type = 'resource';
8685: @interval=&EXT("resource.0.interval",$item);
8686: if (ref($navmap)) {
8687: my $res = $navmap->getBySymb($item);
8688: push(@to_test,$res);
8689: }
8690: } else {
8691: my $mapsymb = &symbread($item,1);
8692: if ($mapsymb) {
8693: if (ref($navmap)) {
8694: my $mapres = $navmap->getBySymb($mapsymb);
8695: @to_test = $mapres->retrieveResources($mapres,undef,0,0,0,1);
8696: foreach my $res (@to_test) {
8697: my $symb = $res->symb();
8698: next if ($symb eq $mapsymb);
8699: if ($symb ne '') {
8700: @interval=&EXT("resource.0.interval",$symb);
8701: if ($interval[1] eq 'map') {
8702: last;
8703: }
8704: }
8705: }
8706: }
8707: }
8708: }
8709: }
8710: if ($interval[0] =~ /^(\d+)/) {
8711: my $timelimit = $1;
8712: my $first_access;
8713: if ($type eq 'resource') {
8714: $first_access=&get_first_access($interval[1],$item);
8715: } elsif ($type eq 'map') {
8716: $first_access=&get_first_access($interval[1],undef,$item);
8717: } else {
8718: $first_access=&get_first_access($interval[1]);
8719: }
8720: if ($first_access) {
8721: my $timesup = $first_access+$timelimit;
8722: if ($timesup > $now) {
8723: my $activeblock;
8724: foreach my $res (@to_test) {
8725: if ($res->answerable()) {
8726: $activeblock = 1;
8727: last;
8728: }
8729: }
8730: if ($activeblock) {
8731: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
8732: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
8733: $blockers{$block}{'maps'} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
8734: }
8735: }
8736: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
8737: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
8738: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
8739: }
8740: }
8741: }
8742: }
8743: }
8744: }
8745: }
8746: }
8747: }
8748: }
8749: return %blockers;
8750: }
8751:
8752: sub has_comm_blocking {
8753: my ($priv,$symb,$uri,$blocks) = @_;
8754: my @blockers;
8755: return unless ($env{'request.course.id'});
8756: return unless ($priv eq 'bre');
8757: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
8758: return if ($env{'request.state'} eq 'construct');
8759: &load_all_blockers($env{'user.name'},$env{'user.domain'},$blocks);
8760: return unless (keys(%cachedblockers) > 0);
8761: my (%possibles,@symbs);
8762: if (!$symb) {
8763: $symb = &symbread($uri,1,1,1,\%possibles);
8764: }
8765: if ($symb) {
8766: @symbs = ($symb);
8767: } elsif (keys(%possibles)) {
8768: @symbs = keys(%possibles);
8769: }
8770: my $noblock;
8771: foreach my $symb (@symbs) {
8772: last if ($noblock);
8773: my ($map,$resid,$resurl)=&decode_symb($symb);
8774: foreach my $block (keys(%cachedblockers)) {
8775: if ($block =~ /^firstaccess____(.+)$/) {
8776: my $item = $1;
8777: if (($item eq $map) || ($item eq $symb)) {
8778: $noblock = 1;
8779: last;
8780: }
8781: }
8782: if (ref($cachedblockers{$block}) eq 'HASH') {
8783: if (ref($cachedblockers{$block}{'resources'}) eq 'HASH') {
8784: if ($cachedblockers{$block}{'resources'}{$symb}) {
8785: unless (grep(/^\Q$block\E$/,@blockers)) {
8786: push(@blockers,$block);
8787: }
8788: }
8789: }
8790: }
8791: if (ref($cachedblockers{$block}{'maps'}) eq 'HASH') {
8792: if ($cachedblockers{$block}{'maps'}{$map}) {
8793: unless (grep(/^\Q$block\E$/,@blockers)) {
8794: push(@blockers,$block);
8795: }
8796: }
8797: }
8798: }
8799: }
8800: return if ($noblock);
8801: return @blockers;
8802: }
8803: }
8804:
8805: sub deeplink_check {
8806: my ($priv,$symb,$uri) = @_;
8807: return unless ($env{'request.course.id'});
8808: return unless ($priv eq 'bre');
8809: return if ($env{'request.state'} eq 'construct');
8810: return if ($env{'request.role.adv'});
8811: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8812: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
8813: my (%possibles,@symbs);
8814: if (!$symb) {
8815: $symb = &symbread($uri,1,1,1,\%possibles);
8816: }
8817: if ($symb) {
8818: @symbs = ($symb);
8819: } elsif (keys(%possibles)) {
8820: @symbs = keys(%possibles);
8821: }
8822:
8823: my ($login,$switchrole,$allow);
8824: if ($env{'request.deeplink.login'} =~ m{^\Q/tiny/$cdom/\E(\w+)$}) {
8825: my $key = $1;
8826: my $tinyurl;
8827: my ($result,$cached)=&Apache::lonnet::is_cached_new('tiny',$cdom."\0".$key);
8828: if (defined($cached)) {
8829: $tinyurl = $result;
8830: } else {
8831: my $configuname = &Apache::lonnet::get_domainconfiguser($cdom);
8832: my %currtiny = &Apache::lonnet::get('tiny',[$key],$cdom,$configuname);
8833: if ($currtiny{$key} ne '') {
8834: $tinyurl = $currtiny{$key};
8835: &Apache::lonnet::do_cache_new('tiny',$cdom."\0".$key,$currtiny{$key},600);
8836: }
8837: }
8838: if ($tinyurl ne '') {
8839: my ($cnumreq,$posslogin) = split(/\&/,$tinyurl);
8840: if ($cnumreq eq $cnum) {
8841: $login = $posslogin;
8842: } else {
8843: $switchrole = 1;
8844: }
8845: }
8846: }
8847: foreach my $symb (@symbs) {
8848: last if ($allow);
8849: my $deeplink = &EXT("resource.0.deeplink",$symb);
8850: if ($deeplink eq '') {
8851: $allow = 1;
8852: } else {
8853: my ($listed,$scope,$access) = split(/,/,$deeplink);
8854: if ($access eq 'any') {
8855: $allow = 1;
8856: } elsif ($login) {
8857: if ($access eq 'only') {
8858: if ($scope eq 'res') {
8859: if ($symb eq $login) {
8860: $allow = 1;
8861: }
8862: } elsif ($scope eq 'map') {
8863: #FIXME Compare map for $env{'request.deeplink.login'} with map for $symb
8864: } elsif ($scope eq 'rec') {
8865: #FIXME Recurse up for $env{'request.deeplink.login'} with map for $symb
8866: }
8867: } else {
8868: my ($acctype,$item) = split(/:/,$access);
8869: if (($acctype eq 'lti') && ($env{'user.linkprotector'})) {
8870: if (grep(/^\Q$item\E$/,split(/,/,$env{'user.linkprotector'}))) {
8871: my %tinyurls = &get('tiny',[$symb],$cdom,$cnum);
8872: if (grep(/\Q$tinyurls{$symb}\E$/,split(/,/,$env{'user.linkproturis'}))) {
8873: $allow = 1;
8874: }
8875: }
8876: } elsif (($acctype eq 'key') && ($env{'user.deeplinkkey'})) {
8877: if (grep(/^\Q$item\E$/,split(/,/,$env{'user.deeplinkkey'}))) {
8878: my %tinyurls = &get('tiny',[$symb],$cdom,$cnum);
8879: if (grep(/\Q$tinyurls{$symb}\E$/,split(/,/,$env{'user.keyedlinkuri'}))) {
8880: $allow = 1;
8881: }
8882: }
8883: }
8884: }
8885: }
8886: }
8887: }
8888: return if ($allow);
8889: return 1;
8890: }
8891:
8892: # -------------------------------- Deversion and split uri into path an filename
8893:
8894: #
8895: # Removes the version from a URI and
8896: # splits it in to its filename and path to the filename.
8897: # Seems like File::Basename could have done this more clearly.
8898: # Parameters:
8899: # $uri - input URI
8900: # Returns:
8901: # Two element list consisting of
8902: # $pathname - the URI up to and excluding the trailing /
8903: # $filename - The part of the URI following the last /
8904: # NOTE:
8905: # Another realization of this is simply:
8906: # use File::Basename;
8907: # ...
8908: # $uri = shift;
8909: # $filename = basename($uri);
8910: # $path = dirname($uri);
8911: # return ($filename, $path);
8912: #
8913: # The implementation below is probably faster however.
8914: #
8915: sub split_uri_for_cond {
8916: my $uri=&deversion(&declutter(shift));
8917: my @uriparts=split(/\//,$uri);
8918: my $filename=pop(@uriparts);
8919: my $pathname=join('/',@uriparts);
8920: return ($pathname,$filename);
8921: }
8922: # --------------------------------------------------- Is a resource on the map?
8923:
8924: sub is_on_map {
8925: my ($pathname,$filename) = &split_uri_for_cond(shift);
8926: #Trying to find the conditional for the file
8927: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
8928: /\&\Q$filename\E\:([\d\|]+)\&/);
8929: if ($match) {
8930: return (1,$1);
8931: } else {
8932: return (0,0);
8933: }
8934: }
8935:
8936: # --------------------------------------------------------- Get symb from alias
8937:
8938: sub get_symb_from_alias {
8939: my $symb=shift;
8940: my ($map,$resid,$url)=&decode_symb($symb);
8941: # Already is a symb
8942: if ($url) { return $symb; }
8943: # Must be an alias
8944: my $aliassymb='';
8945: my %bighash;
8946: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8947: &GDBM_READER(),0640)) {
8948: my $rid=$bighash{'mapalias_'.$symb};
8949: if ($rid) {
8950: my ($mapid,$resid)=split(/\./,$rid);
8951: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
8952: $resid,$bighash{'src_'.$rid});
8953: }
8954: untie %bighash;
8955: }
8956: return $aliassymb;
8957: }
8958:
8959: # ----------------------------------------------------------------- Define Role
8960:
8961: sub definerole {
8962: if (allowed('mcr','/')) {
8963: my ($rolename,$sysrole,$domrole,$courole,$uname,$udom)=@_;
8964: foreach my $role (split(':',$sysrole)) {
8965: my ($crole,$cqual)=split(/\&/,$role);
8966: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
8967: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
8968: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
8969: return "refused:s:$crole&$cqual";
8970: }
8971: }
8972: }
8973: foreach my $role (split(':',$domrole)) {
8974: my ($crole,$cqual)=split(/\&/,$role);
8975: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
8976: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
8977: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
8978: return "refused:d:$crole&$cqual";
8979: }
8980: }
8981: }
8982: foreach my $role (split(':',$courole)) {
8983: my ($crole,$cqual)=split(/\&/,$role);
8984: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
8985: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
8986: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
8987: return "refused:c:$crole&$cqual";
8988: }
8989: }
8990: }
8991: my $uhome;
8992: if (($uname ne '') && ($udom ne '')) {
8993: $uhome = &homeserver($uname,$udom);
8994: return $uhome if ($uhome eq 'no_host');
8995: } else {
8996: $uname = $env{'user.name'};
8997: $udom = $env{'user.domain'};
8998: $uhome = $env{'user.home'};
8999: }
9000: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
9001: "$udom:$uname:rolesdef_$rolename=".
9002: escape($sysrole.'_'.$domrole.'_'.$courole);
9003: return reply($command,$uhome);
9004: } else {
9005: return 'refused';
9006: }
9007: }
9008:
9009: # ---------------- Make a metadata query against the network of library servers
9010:
9011: sub metadata_query {
9012: my ($query,$custom,$customshow,$server_array,$domains_hash)=@_;
9013: my %rhash;
9014: my %libserv = &all_library();
9015: my @server_list = (defined($server_array) ? @$server_array
9016: : keys(%libserv) );
9017: for my $server (@server_list) {
9018: my $domains = '';
9019: if (ref($domains_hash) eq 'HASH') {
9020: $domains = $domains_hash->{$server};
9021: }
9022: unless ($custom or $customshow) {
9023: my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server);
9024: $rhash{$server}=$reply;
9025: }
9026: else {
9027: my $reply=&reply("querysend:".&escape($query).':'.
9028: &escape($custom).':'.&escape($customshow).':'.&escape($domains),
9029: $server);
9030: $rhash{$server}=$reply;
9031: }
9032: }
9033: return \%rhash;
9034: }
9035:
9036: # ----------------------------------------- Send log queries and wait for reply
9037:
9038: sub log_query {
9039: my ($uname,$udom,$query,%filters)=@_;
9040: my $uhome=&homeserver($uname,$udom);
9041: if ($uhome eq 'no_host') { return 'error: no_host'; }
9042: my $uhost=&hostname($uhome);
9043: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
9044: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
9045: $uhome);
9046: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
9047: return get_query_reply($queryid);
9048: }
9049:
9050: # -------------------------- Update MySQL table for portfolio file
9051:
9052: sub update_portfolio_table {
9053: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
9054: if ($group ne '') {
9055: $file_name =~s /^\Q$group\E//;
9056: }
9057: my $homeserver = &homeserver($uname,$udom);
9058: my $queryid=
9059: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
9060: ':'.&escape($file_name).':'.$action,$homeserver);
9061: my $reply = &get_query_reply($queryid);
9062: return $reply;
9063: }
9064:
9065: # -------------------------- Update MySQL allusers table
9066:
9067: sub update_allusers_table {
9068: my ($uname,$udom,$names) = @_;
9069: my $homeserver = &homeserver($uname,$udom);
9070: my $queryid=
9071: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
9072: 'lastname='.&escape($names->{'lastname'}).'%%'.
9073: 'firstname='.&escape($names->{'firstname'}).'%%'.
9074: 'middlename='.&escape($names->{'middlename'}).'%%'.
9075: 'generation='.&escape($names->{'generation'}).'%%'.
9076: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
9077: 'id='.&escape($names->{'id'}),$homeserver);
9078: return;
9079: }
9080:
9081: # ------- Request retrieval of institutional classlists for course(s)
9082:
9083: sub fetch_enrollment_query {
9084: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
9085: my ($homeserver,$sleep,$loopmax);
9086: my $maxtries = 1;
9087: if ($context eq 'automated') {
9088: $homeserver = $perlvar{'lonHostID'};
9089: $sleep = 2;
9090: $loopmax = 100;
9091: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
9092: } else {
9093: $homeserver = &homeserver($cnum,$dom);
9094: }
9095: my $host=&hostname($homeserver);
9096: my $cmd = '';
9097: foreach my $affiliate (keys(%{$affiliatesref})) {
9098: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
9099: }
9100: $cmd =~ s/%%$//;
9101: $cmd = &escape($cmd);
9102: my $query = 'fetchenrollment';
9103: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
9104: unless ($queryid=~/^\Q$host\E\_/) {
9105: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
9106: return 'error: '.$queryid;
9107: }
9108: my $reply = &get_query_reply($queryid,$sleep,$loopmax);
9109: my $tries = 1;
9110: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
9111: $reply = &get_query_reply($queryid,$sleep,$loopmax);
9112: $tries ++;
9113: }
9114: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
9115: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
9116: } else {
9117: my @responses = split(/:/,$reply);
9118: if (grep { $_ eq $homeserver } ¤t_machine_ids()) {
9119: foreach my $line (@responses) {
9120: my ($key,$value) = split(/=/,$line,2);
9121: $$replyref{$key} = $value;
9122: }
9123: } else {
9124: my $pathname = LONCAPA::tempdir();
9125: foreach my $line (@responses) {
9126: my ($key,$value) = split(/=/,$line);
9127: $$replyref{$key} = $value;
9128: if ($value > 0) {
9129: foreach my $item (@{$$affiliatesref{$key}}) {
9130: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
9131: my $destname = $pathname.'/'.$filename;
9132: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
9133: if ($xml_classlist =~ /^error/) {
9134: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
9135: } else {
9136: if ( open(FILE,">",$destname) ) {
9137: print FILE &unescape($xml_classlist);
9138: close(FILE);
9139: } else {
9140: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
9141: }
9142: }
9143: }
9144: }
9145: }
9146: }
9147: return 'ok';
9148: }
9149: return 'error';
9150: }
9151:
9152: sub get_query_reply {
9153: my ($queryid,$sleep,$loopmax) = @_;;
9154: if (($sleep eq '') || ($sleep !~ /^\d+\.?\d*$/)) {
9155: $sleep = 0.2;
9156: }
9157: if (($loopmax eq '') || ($loopmax =~ /\D/)) {
9158: $loopmax = 100;
9159: }
9160: my $replyfile=LONCAPA::tempdir().$queryid;
9161: my $reply='';
9162: for (1..$loopmax) {
9163: sleep($sleep);
9164: if (-e $replyfile.'.end') {
9165: if (open(my $fh,"<",$replyfile)) {
9166: $reply = join('',<$fh>);
9167: close($fh);
9168: } else { return 'error: reply_file_error'; }
9169: return &unescape($reply);
9170: }
9171: }
9172: return 'timeout:'.$queryid;
9173: }
9174:
9175: sub courselog_query {
9176: #
9177: # possible filters:
9178: # url: url or symb
9179: # username
9180: # domain
9181: # action: view, submit, grade
9182: # start: timestamp
9183: # end: timestamp
9184: #
9185: my (%filters)=@_;
9186: unless ($env{'request.course.id'}) { return 'no_course'; }
9187: if ($filters{'url'}) {
9188: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
9189: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
9190: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
9191: }
9192: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
9193: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
9194: return &log_query($cname,$cdom,'courselog',%filters);
9195: }
9196:
9197: sub userlog_query {
9198: #
9199: # possible filters:
9200: # action: log check role
9201: # start: timestamp
9202: # end: timestamp
9203: #
9204: my ($uname,$udom,%filters)=@_;
9205: return &log_query($uname,$udom,'userlog',%filters);
9206: }
9207:
9208: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
9209:
9210: sub auto_run {
9211: my ($cnum,$cdom) = @_;
9212: my $response = 0;
9213: my $settings;
9214: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
9215: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
9216: $settings = $domconfig{'autoenroll'};
9217: if ($settings->{'run'} eq '1') {
9218: $response = 1;
9219: }
9220: } else {
9221: my $homeserver;
9222: if (&is_course($cdom,$cnum)) {
9223: $homeserver = &homeserver($cnum,$cdom);
9224: } else {
9225: $homeserver = &domain($cdom,'primary');
9226: }
9227: if ($homeserver ne 'no_host') {
9228: $response = &reply('autorun:'.$cdom,$homeserver);
9229: }
9230: }
9231: return $response;
9232: }
9233:
9234: sub auto_get_sections {
9235: my ($cnum,$cdom,$inst_coursecode) = @_;
9236: my $homeserver;
9237: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9238: $homeserver = &homeserver($cnum,$cdom);
9239: }
9240: if (!defined($homeserver)) {
9241: if ($cdom =~ /^$match_domain$/) {
9242: $homeserver = &domain($cdom,'primary');
9243: }
9244: }
9245: my @secs;
9246: if (defined($homeserver)) {
9247: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
9248: unless ($response eq 'refused') {
9249: @secs = split(/:/,$response);
9250: }
9251: }
9252: return @secs;
9253: }
9254:
9255: sub auto_new_course {
9256: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
9257: my $homeserver = &homeserver($cnum,$cdom);
9258: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
9259: return $response;
9260: }
9261:
9262: sub auto_validate_courseID {
9263: my ($cnum,$cdom,$inst_course_id) = @_;
9264: my $homeserver = &homeserver($cnum,$cdom);
9265: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
9266: return $response;
9267: }
9268:
9269: sub auto_validate_instcode {
9270: my ($cnum,$cdom,$instcode,$owner) = @_;
9271: my ($homeserver,$response);
9272: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9273: $homeserver = &homeserver($cnum,$cdom);
9274: }
9275: if (!defined($homeserver)) {
9276: if ($cdom =~ /^$match_domain$/) {
9277: $homeserver = &domain($cdom,'primary');
9278: }
9279: }
9280: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
9281: &escape($instcode).':'.&escape($owner),$homeserver));
9282: my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
9283: return ($outcome,$description,$defaultcredits);
9284: }
9285:
9286: sub auto_create_password {
9287: my ($cnum,$cdom,$authparam,$udom) = @_;
9288: my ($homeserver,$response);
9289: my $create_passwd = 0;
9290: my $authchk = '';
9291: if ($udom =~ /^$match_domain$/) {
9292: $homeserver = &domain($udom,'primary');
9293: }
9294: if ($homeserver eq '') {
9295: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9296: $homeserver = &homeserver($cnum,$cdom);
9297: }
9298: }
9299: if ($homeserver eq '') {
9300: $authchk = 'nodomain';
9301: } else {
9302: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
9303: if ($response eq 'refused') {
9304: $authchk = 'refused';
9305: } else {
9306: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
9307: }
9308: }
9309: return ($authparam,$create_passwd,$authchk);
9310: }
9311:
9312: sub auto_photo_permission {
9313: my ($cnum,$cdom,$students) = @_;
9314: my $homeserver = &homeserver($cnum,$cdom);
9315: my ($outcome,$perm_reqd,$conditions) =
9316: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
9317: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
9318: return (undef,undef);
9319: }
9320: return ($outcome,$perm_reqd,$conditions);
9321: }
9322:
9323: sub auto_checkphotos {
9324: my ($uname,$udom,$pid) = @_;
9325: my $homeserver = &homeserver($uname,$udom);
9326: my ($result,$resulttype);
9327: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
9328: &escape($uname).':'.&escape($pid),
9329: $homeserver));
9330: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
9331: return (undef,undef);
9332: }
9333: if ($outcome) {
9334: ($result,$resulttype) = split(/:/,$outcome);
9335: }
9336: return ($result,$resulttype);
9337: }
9338:
9339: sub auto_photochoice {
9340: my ($cnum,$cdom) = @_;
9341: my $homeserver = &homeserver($cnum,$cdom);
9342: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
9343: &escape($cdom),
9344: $homeserver)));
9345: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
9346: return (undef,undef);
9347: }
9348: return ($update,$comment);
9349: }
9350:
9351: sub auto_photoupdate {
9352: my ($affiliatesref,$dom,$cnum,$photo) = @_;
9353: my $homeserver = &homeserver($cnum,$dom);
9354: my $host=&hostname($homeserver);
9355: my $cmd = '';
9356: my $maxtries = 1;
9357: foreach my $affiliate (keys(%{$affiliatesref})) {
9358: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
9359: }
9360: $cmd =~ s/%%$//;
9361: $cmd = &escape($cmd);
9362: my $query = 'institutionalphotos';
9363: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
9364: unless ($queryid=~/^\Q$host\E\_/) {
9365: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
9366: return 'error: '.$queryid;
9367: }
9368: my $reply = &get_query_reply($queryid);
9369: my $tries = 1;
9370: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
9371: $reply = &get_query_reply($queryid);
9372: $tries ++;
9373: }
9374: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
9375: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
9376: } else {
9377: my @responses = split(/:/,$reply);
9378: my $outcome = shift(@responses);
9379: foreach my $item (@responses) {
9380: my ($key,$value) = split(/=/,$item);
9381: $$photo{$key} = $value;
9382: }
9383: return $outcome;
9384: }
9385: return 'error';
9386: }
9387:
9388: sub auto_instcode_format {
9389: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
9390: $cat_order) = @_;
9391: my $courses = '';
9392: my @homeservers;
9393: if ($caller eq 'global') {
9394: my %servers = &get_servers($codedom,'library');
9395: foreach my $tryserver (keys(%servers)) {
9396: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
9397: push(@homeservers,$tryserver);
9398: }
9399: }
9400: } elsif ($caller eq 'requests') {
9401: if ($codedom =~ /^$match_domain$/) {
9402: my $chome = &domain($codedom,'primary');
9403: unless ($chome eq 'no_host') {
9404: push(@homeservers,$chome);
9405: }
9406: }
9407: } else {
9408: push(@homeservers,&homeserver($caller,$codedom));
9409: }
9410: foreach my $code (keys(%{$instcodes})) {
9411: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
9412: }
9413: chop($courses);
9414: my $ok_response = 0;
9415: my $response;
9416: while (@homeservers > 0 && $ok_response == 0) {
9417: my $server = shift(@homeservers);
9418: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
9419: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
9420: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
9421: split(/:/,$response);
9422: %{$codes} = (%{$codes},&str2hash($codes_str));
9423: push(@{$codetitles},&str2array($codetitles_str));
9424: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
9425: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
9426: $ok_response = 1;
9427: }
9428: }
9429: if ($ok_response) {
9430: return 'ok';
9431: } else {
9432: return $response;
9433: }
9434: }
9435:
9436: sub auto_instcode_defaults {
9437: my ($domain,$returnhash,$code_order) = @_;
9438: my @homeservers;
9439:
9440: my %servers = &get_servers($domain,'library');
9441: foreach my $tryserver (keys(%servers)) {
9442: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
9443: push(@homeservers,$tryserver);
9444: }
9445: }
9446:
9447: my $response;
9448: foreach my $server (@homeservers) {
9449: $response=&reply('autoinstcodedefaults:'.$domain,$server);
9450: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
9451:
9452: foreach my $pair (split(/\&/,$response)) {
9453: my ($name,$value)=split(/\=/,$pair);
9454: if ($name eq 'code_order') {
9455: @{$code_order} = split(/\&/,&unescape($value));
9456: } else {
9457: $returnhash->{&unescape($name)}=&unescape($value);
9458: }
9459: }
9460: return 'ok';
9461: }
9462:
9463: return $response;
9464: }
9465:
9466: sub auto_possible_instcodes {
9467: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
9468: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
9469: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
9470: return;
9471: }
9472: my (@homeservers,$uhome);
9473: if (defined(&domain($domain,'primary'))) {
9474: $uhome=&domain($domain,'primary');
9475: push(@homeservers,&domain($domain,'primary'));
9476: } else {
9477: my %servers = &get_servers($domain,'library');
9478: foreach my $tryserver (keys(%servers)) {
9479: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
9480: push(@homeservers,$tryserver);
9481: }
9482: }
9483: }
9484: my $response;
9485: foreach my $server (@homeservers) {
9486: $response=&reply('autopossibleinstcodes:'.$domain,$server);
9487: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
9488: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
9489: split(':',$response);
9490: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
9491: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
9492: foreach my $item (split('&',$cat_title)) {
9493: my ($name,$value)=split('=',$item);
9494: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
9495: }
9496: foreach my $item (split('&',$cat_order)) {
9497: my ($name,$value)=split('=',$item);
9498: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
9499: }
9500: return 'ok';
9501: }
9502: return $response;
9503: }
9504:
9505: sub auto_courserequest_checks {
9506: my ($dom) = @_;
9507: my ($homeserver,%validations);
9508: if ($dom =~ /^$match_domain$/) {
9509: $homeserver = &domain($dom,'primary');
9510: }
9511: unless ($homeserver eq 'no_host') {
9512: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
9513: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9514: my @items = split(/&/,$response);
9515: foreach my $item (@items) {
9516: my ($key,$value) = split('=',$item);
9517: $validations{&unescape($key)} = &thaw_unescape($value);
9518: }
9519: }
9520: }
9521: return %validations;
9522: }
9523:
9524: sub auto_courserequest_validation {
9525: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$custominfo) = @_;
9526: my ($homeserver,$response);
9527: if ($dom =~ /^$match_domain$/) {
9528: $homeserver = &domain($dom,'primary');
9529: }
9530: unless ($homeserver eq 'no_host') {
9531: my $customdata;
9532: if (ref($custominfo) eq 'HASH') {
9533: $customdata = &freeze_escape($custominfo);
9534: }
9535: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
9536: ':'.&escape($crstype).':'.&escape($inststatuslist).
9537: ':'.&escape($instcode).':'.&escape($instseclist).':'.
9538: $customdata,$homeserver));
9539: }
9540: return $response;
9541: }
9542:
9543: sub auto_validate_class_sec {
9544: my ($cdom,$cnum,$owners,$inst_class) = @_;
9545: my $homeserver = &homeserver($cnum,$cdom);
9546: my $ownerlist;
9547: if (ref($owners) eq 'ARRAY') {
9548: $ownerlist = join(',',@{$owners});
9549: } else {
9550: $ownerlist = $owners;
9551: }
9552: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
9553: &escape($ownerlist).':'.$cdom,$homeserver);
9554: return $response;
9555: }
9556:
9557: sub auto_validate_instclasses {
9558: my ($cdom,$cnum,$owners,$classesref) = @_;
9559: my ($homeserver,%validations);
9560: $homeserver = &homeserver($cnum,$cdom);
9561: unless ($homeserver eq 'no_host') {
9562: my $ownerlist;
9563: if (ref($owners) eq 'ARRAY') {
9564: $ownerlist = join(',',@{$owners});
9565: } else {
9566: $ownerlist = $owners;
9567: }
9568: if (ref($classesref) eq 'HASH') {
9569: my $classes = &freeze_escape($classesref);
9570: my $response=&reply('autovalidateinstclasses:'.&escape($ownerlist).
9571: ':'.$cdom.':'.$classes,$homeserver);
9572: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9573: my @items = split(/&/,$response);
9574: foreach my $item (@items) {
9575: my ($key,$value) = split('=',$item);
9576: $validations{&unescape($key)} = &thaw_unescape($value);
9577: }
9578: }
9579: }
9580: }
9581: return %validations;
9582: }
9583:
9584: sub auto_crsreq_update {
9585: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,
9586: $code,$accessstart,$accessend,$inbound) = @_;
9587: my ($homeserver,%crsreqresponse);
9588: if ($cdom =~ /^$match_domain$/) {
9589: $homeserver = &domain($cdom,'primary');
9590: }
9591: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
9592: my $info;
9593: if (ref($inbound) eq 'HASH') {
9594: $info = &freeze_escape($inbound);
9595: }
9596: my $response=&reply('autocrsrequpdate:'.$cdom.':'.$cnum.':'.&escape($crstype).
9597: ':'.&escape($action).':'.&escape($ownername).':'.
9598: &escape($ownerdomain).':'.&escape($fullname).':'.
9599: &escape($title).':'.&escape($code).':'.
9600: &escape($accessstart).':'.&escape($accessend).':'.$info,
9601: $homeserver);
9602: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9603: my @items = split(/&/,$response);
9604: foreach my $item (@items) {
9605: my ($key,$value) = split('=',$item);
9606: $crsreqresponse{&unescape($key)} = &thaw_unescape($value);
9607: }
9608: }
9609: }
9610: return \%crsreqresponse;
9611: }
9612:
9613: sub auto_export_grades {
9614: my ($cdom,$cnum,$inforef,$gradesref) = @_;
9615: my ($homeserver,%exportresponse);
9616: if ($cdom =~ /^$match_domain$/) {
9617: $homeserver = &domain($cdom,'primary');
9618: }
9619: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
9620: my $info;
9621: if (ref($inforef) eq 'HASH') {
9622: $info = &freeze_escape($inforef);
9623: }
9624: if (ref($gradesref) eq 'HASH') {
9625: my $grades = &freeze_escape($gradesref);
9626: my $response=&reply('encrypt:autoexportgrades:'.$cdom.':'.$cnum.':'.
9627: $info.':'.$grades,$homeserver);
9628: unless ($response =~ /(con_lost|error|no_such_host|refused|unknown_command)/) {
9629: my @items = split(/&/,$response);
9630: foreach my $item (@items) {
9631: my ($key,$value) = split('=',$item);
9632: $exportresponse{&unescape($key)} = &thaw_unescape($value);
9633: }
9634: }
9635: }
9636: }
9637: return \%exportresponse;
9638: }
9639:
9640: sub check_instcode_cloning {
9641: my ($codedefaults,$code_order,$cloner,$clonefromcode,$clonetocode) = @_;
9642: unless ((ref($codedefaults) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
9643: return;
9644: }
9645: my $canclone;
9646: if (@{$code_order} > 0) {
9647: my $instcoderegexp ='^';
9648: my @clonecodes = split(/\&/,$cloner);
9649: foreach my $item (@{$code_order}) {
9650: if (grep(/^\Q$item\E=/,@clonecodes)) {
9651: foreach my $pair (@clonecodes) {
9652: my ($key,$val) = split(/\=/,$pair,2);
9653: $val = &unescape($val);
9654: if ($key eq $item) {
9655: $instcoderegexp .= '('.$val.')';
9656: last;
9657: }
9658: }
9659: } else {
9660: $instcoderegexp .= $codedefaults->{$item};
9661: }
9662: }
9663: $instcoderegexp .= '$';
9664: my (@from,@to);
9665: eval {
9666: (@from) = ($clonefromcode =~ /$instcoderegexp/);
9667: (@to) = ($clonetocode =~ /$instcoderegexp/);
9668: };
9669: if ((@from > 0) && (@to > 0)) {
9670: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
9671: if (!@diffs) {
9672: $canclone = 1;
9673: }
9674: }
9675: }
9676: return $canclone;
9677: }
9678:
9679: sub default_instcode_cloning {
9680: my ($clonedom,$domdefclone,$clonefromcode,$clonetocode,$codedefaultsref,$codeorderref) = @_;
9681: my (%codedefaults,@code_order,$canclone);
9682: if ((ref($codedefaultsref) eq 'HASH') && (ref($codeorderref) eq 'ARRAY')) {
9683: %codedefaults = %{$codedefaultsref};
9684: @code_order = @{$codeorderref};
9685: } elsif ($clonedom) {
9686: &auto_instcode_defaults($clonedom,\%codedefaults,\@code_order);
9687: }
9688: if (($domdefclone) && (@code_order)) {
9689: my @clonecodes = split(/\+/,$domdefclone);
9690: my $instcoderegexp ='^';
9691: foreach my $item (@code_order) {
9692: if (grep(/^\Q$item\E$/,@clonecodes)) {
9693: $instcoderegexp .= '('.$codedefaults{$item}.')';
9694: } else {
9695: $instcoderegexp .= $codedefaults{$item};
9696: }
9697: }
9698: $instcoderegexp .= '$';
9699: my (@from,@to);
9700: eval {
9701: (@from) = ($clonefromcode =~ /$instcoderegexp/);
9702: (@to) = ($clonetocode =~ /$instcoderegexp/);
9703: };
9704: if ((@from > 0) && (@to > 0)) {
9705: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
9706: if (!@diffs) {
9707: $canclone = 1;
9708: }
9709: }
9710: }
9711: return $canclone;
9712: }
9713:
9714: # ------------------------------------------------------- Course Group routines
9715:
9716: sub get_coursegroups {
9717: my ($cdom,$cnum,$group,$namespace) = @_;
9718: return(&dump($namespace,$cdom,$cnum,$group));
9719: }
9720:
9721: sub modify_coursegroup {
9722: my ($cdom,$cnum,$groupsettings) = @_;
9723: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
9724: }
9725:
9726: sub toggle_coursegroup_status {
9727: my ($cdom,$cnum,$group,$action) = @_;
9728: my ($from_namespace,$to_namespace);
9729: if ($action eq 'delete') {
9730: $from_namespace = 'coursegroups';
9731: $to_namespace = 'deleted_groups';
9732: } else {
9733: $from_namespace = 'deleted_groups';
9734: $to_namespace = 'coursegroups';
9735: }
9736: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
9737: if (my $tmp = &error(%curr_group)) {
9738: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
9739: return ('read error',$tmp);
9740: } else {
9741: my %savedsettings = %curr_group;
9742: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
9743: my $deloutcome;
9744: if ($result eq 'ok') {
9745: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
9746: } else {
9747: return ('write error',$result);
9748: }
9749: if ($deloutcome eq 'ok') {
9750: return 'ok';
9751: } else {
9752: return ('delete error',$deloutcome);
9753: }
9754: }
9755: }
9756:
9757: sub modify_group_roles {
9758: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
9759: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
9760: my $role = 'gr/'.&escape($userprivs);
9761: my ($uname,$udom) = split(/:/,$user);
9762: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
9763: if ($result eq 'ok') {
9764: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
9765: }
9766: return $result;
9767: }
9768:
9769: sub modify_coursegroup_membership {
9770: my ($cdom,$cnum,$membership) = @_;
9771: my $result = &put('groupmembership',$membership,$cdom,$cnum);
9772: return $result;
9773: }
9774:
9775: sub get_active_groups {
9776: my ($udom,$uname,$cdom,$cnum) = @_;
9777: my $now = time;
9778: my %groups = ();
9779: foreach my $key (keys(%env)) {
9780: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
9781: my ($start,$end) = split(/\./,$env{$key});
9782: if (($end!=0) && ($end<$now)) { next; }
9783: if (($start!=0) && ($start>$now)) { next; }
9784: if ($1 eq $cdom && $2 eq $cnum) {
9785: $groups{$3} = $env{$key} ;
9786: }
9787: }
9788: }
9789: return %groups;
9790: }
9791:
9792: sub get_group_membership {
9793: my ($cdom,$cnum,$group) = @_;
9794: return(&dump('groupmembership',$cdom,$cnum,$group));
9795: }
9796:
9797: sub get_users_groups {
9798: my ($udom,$uname,$courseid) = @_;
9799: my @usersgroups;
9800: my $cachetime=1800;
9801:
9802: my $hashid="$udom:$uname:$courseid";
9803: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
9804: if (defined($cached)) {
9805: @usersgroups = split(/:/,$grouplist);
9806: } else {
9807: $grouplist = '';
9808: my $courseurl = &courseid_to_courseurl($courseid);
9809: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
9810: my $access_end = $env{'course.'.$courseid.
9811: '.default_enrollment_end_date'};
9812: my $now = time;
9813: foreach my $key (keys(%roleshash)) {
9814: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
9815: my $group = $1;
9816: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
9817: my $start = $2;
9818: my $end = $1;
9819: if ($start == -1) { next; } # deleted from group
9820: if (($start!=0) && ($start>$now)) { next; }
9821: if (($end!=0) && ($end<$now)) {
9822: if ($access_end && $access_end < $now) {
9823: if ($access_end - $end < 86400) {
9824: push(@usersgroups,$group);
9825: }
9826: }
9827: next;
9828: }
9829: push(@usersgroups,$group);
9830: }
9831: }
9832: }
9833: @usersgroups = &sort_course_groups($courseid,@usersgroups);
9834: $grouplist = join(':',@usersgroups);
9835: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
9836: }
9837: return @usersgroups;
9838: }
9839:
9840: sub devalidate_getgroups_cache {
9841: my ($udom,$uname,$cdom,$cnum)=@_;
9842: my $courseid = $cdom.'_'.$cnum;
9843:
9844: my $hashid="$udom:$uname:$courseid";
9845: &devalidate_cache_new('getgroups',$hashid);
9846: }
9847:
9848: # ------------------------------------------------------------------ Plain Text
9849:
9850: sub plaintext {
9851: my ($short,$type,$cid,$forcedefault) = @_;
9852: if ($short =~ m{^cr/}) {
9853: return (split('/',$short))[-1];
9854: }
9855: if (!defined($cid)) {
9856: $cid = $env{'request.course.id'};
9857: }
9858: my %rolenames = (
9859: Course => 'std',
9860: Community => 'alt1',
9861: Placement => 'std',
9862: );
9863: if ($cid ne '') {
9864: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
9865: unless ($forcedefault) {
9866: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
9867: &Apache::lonlocal::mt_escape(\$roletext);
9868: return &Apache::lonlocal::mt($roletext);
9869: }
9870: }
9871: }
9872: if ((defined($type)) && (defined($rolenames{$type})) &&
9873: (defined($rolenames{$type})) &&
9874: (defined($prp{$short}{$rolenames{$type}}))) {
9875: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
9876: } elsif ($cid ne '') {
9877: my $crstype = $env{'course.'.$cid.'.type'};
9878: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
9879: (defined($prp{$short}{$rolenames{$crstype}}))) {
9880: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
9881: }
9882: }
9883: return &Apache::lonlocal::mt($prp{$short}{'std'});
9884: }
9885:
9886: # ----------------------------------------------------------------- Assign Role
9887:
9888: sub assignrole {
9889: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
9890: $context)=@_;
9891: my $mrole;
9892: if ($role =~ /^cr\//) {
9893: my $cwosec=$url;
9894: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
9895: unless (&allowed('ccr',$cwosec)) {
9896: my $refused = 1;
9897: if ($context eq 'requestcourses') {
9898: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
9899: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
9900: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
9901: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
9902: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9903: if ($crsenv{'internal.courseowner'} eq
9904: $env{'user.name'}.':'.$env{'user.domain'}) {
9905: $refused = '';
9906: }
9907: }
9908: }
9909: }
9910: }
9911: if ($refused) {
9912: &logthis('Refused custom assignrole: '.
9913: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
9914: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
9915: return 'refused';
9916: }
9917: }
9918: $mrole='cr';
9919: } elsif ($role =~ /^gr\//) {
9920: my $cwogrp=$url;
9921: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
9922: unless (&allowed('mdg',$cwogrp)) {
9923: &logthis('Refused group assignrole: '.
9924: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
9925: $env{'user.name'}.' at '.$env{'user.domain'});
9926: return 'refused';
9927: }
9928: $mrole='gr';
9929: } else {
9930: my $cwosec=$url;
9931: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
9932: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
9933: my $refused;
9934: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
9935: if (!(&allowed('c'.$role,$url))) {
9936: $refused = 1;
9937: }
9938: } else {
9939: $refused = 1;
9940: }
9941: if ($refused) {
9942: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
9943: if (!$selfenroll && (($context eq 'course') || ($context eq 'ltienroll' && $env{'request.lti.login'}))) {
9944: my %crsenv;
9945: if ($role eq 'cc' || $role eq 'co') {
9946: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9947: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
9948: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
9949: if ($crsenv{'internal.courseowner'} eq
9950: $env{'user.name'}.':'.$env{'user.domain'}) {
9951: $refused = '';
9952: }
9953: }
9954: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
9955: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
9956: if ($crsenv{'internal.courseowner'} eq
9957: $env{'user.name'}.':'.$env{'user.domain'}) {
9958: $refused = '';
9959: }
9960: }
9961: }
9962: }
9963: } elsif (($selfenroll == 1) && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
9964: if ($role eq 'st') {
9965: $refused = '';
9966: } elsif (($context eq 'ltienroll') && ($env{'request.lti.login'})) {
9967: $refused = '';
9968: }
9969: } elsif ($context eq 'requestcourses') {
9970: my @possroles = ('st','ta','ep','in','cc','co');
9971: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
9972: my $wrongcc;
9973: if ($cnum =~ /^$match_community$/) {
9974: $wrongcc = 1 if ($role eq 'cc');
9975: } else {
9976: $wrongcc = 1 if ($role eq 'co');
9977: }
9978: unless ($wrongcc) {
9979: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9980: if ($crsenv{'internal.courseowner'} eq
9981: $env{'user.name'}.':'.$env{'user.domain'}) {
9982: $refused = '';
9983: }
9984: }
9985: }
9986: } elsif ($context eq 'requestauthor') {
9987: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
9988: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
9989: if ($env{'environment.requestauthor'} eq 'automatic') {
9990: $refused = '';
9991: } else {
9992: my %domdefaults = &get_domain_defaults($udom);
9993: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
9994: my $checkbystatus;
9995: if ($env{'user.adv'}) {
9996: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
9997: if ($disposition eq 'automatic') {
9998: $refused = '';
9999: } elsif ($disposition eq '') {
10000: $checkbystatus = 1;
10001: }
10002: } else {
10003: $checkbystatus = 1;
10004: }
10005: if ($checkbystatus) {
10006: if ($env{'environment.inststatus'}) {
10007: my @inststatuses = split(/,/,$env{'environment.inststatus'});
10008: foreach my $type (@inststatuses) {
10009: if (($type ne '') &&
10010: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
10011: $refused = '';
10012: }
10013: }
10014: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
10015: $refused = '';
10016: }
10017: }
10018: }
10019: }
10020: }
10021: }
10022: if ($refused) {
10023: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
10024: ' '.$role.' '.$end.' '.$start.' by '.
10025: $env{'user.name'}.' at '.$env{'user.domain'});
10026: return 'refused';
10027: }
10028: }
10029: } elsif ($role eq 'au') {
10030: if ($url ne '/'.$udom.'/') {
10031: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
10032: ' to assign author role for '.$uname.':'.$udom.
10033: ' in domain: '.$url.' refused (wrong domain).');
10034: return 'refused';
10035: }
10036: }
10037: $mrole=$role;
10038: }
10039: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
10040: "$udom:$uname:$url".'_'."$mrole=$role";
10041: if ($end) { $command.='_'.$end; }
10042: if ($start) {
10043: if ($end) {
10044: $command.='_'.$start;
10045: } else {
10046: $command.='_0_'.$start;
10047: }
10048: }
10049: my $origstart = $start;
10050: my $origend = $end;
10051: my $delflag;
10052: # actually delete
10053: if ($deleteflag) {
10054: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
10055: # modify command to delete the role
10056: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
10057: "$udom:$uname:$url".'_'."$mrole";
10058: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
10059: # set start and finish to negative values for userrolelog
10060: $start=-1;
10061: $end=-1;
10062: $delflag = 1;
10063: }
10064: }
10065: # send command
10066: my $answer=&reply($command,&homeserver($uname,$udom));
10067: # log new user role if status is ok
10068: if ($answer eq 'ok') {
10069: &userrolelog($role,$uname,$udom,$url,$start,$end);
10070: if (($role eq 'cc') || ($role eq 'in') ||
10071: ($role eq 'ep') || ($role eq 'ad') ||
10072: ($role eq 'ta') || ($role eq 'st') ||
10073: ($role=~/^cr/) || ($role eq 'gr') ||
10074: ($role eq 'co')) {
10075: # for course roles, perform group memberships changes triggered by role change.
10076: unless ($role =~ /^gr/) {
10077: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
10078: $origstart,$selfenroll,$context);
10079: }
10080: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
10081: $selfenroll,$context);
10082: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
10083: ($role eq 'au') || ($role eq 'dc') || ($role eq 'dh') ||
10084: ($role eq 'da')) {
10085: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
10086: $context);
10087: } elsif (($role eq 'ca') || ($role eq 'aa')) {
10088: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
10089: $context);
10090: }
10091: if ($role eq 'cc') {
10092: &autoupdate_coowners($url,$end,$start,$uname,$udom);
10093: }
10094: }
10095: return $answer;
10096: }
10097:
10098: sub autoupdate_coowners {
10099: my ($url,$end,$start,$uname,$udom) = @_;
10100: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
10101: if (($cdom ne '') && ($cnum ne '')) {
10102: my $now = time;
10103: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
10104: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
10105: my %coursehash = &coursedescription($cdom.'_'.$cnum);
10106: my $instcode = $coursehash{'internal.coursecode'};
10107: if ($instcode ne '') {
10108: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
10109: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
10110: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
10111: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
10112: if ($result eq 'valid') {
10113: if ($coursehash{'internal.co-owners'}) {
10114: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
10115: push(@newcoowners,$coowner);
10116: }
10117: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
10118: push(@newcoowners,$uname.':'.$udom);
10119: }
10120: @newcoowners = sort(@newcoowners);
10121: } else {
10122: push(@newcoowners,$uname.':'.$udom);
10123: }
10124: } else {
10125: if ($coursehash{'internal.co-owners'}) {
10126: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
10127: unless ($coowner eq $uname.':'.$udom) {
10128: push(@newcoowners,$coowner);
10129: }
10130: }
10131: unless (@newcoowners > 0) {
10132: $delcoowners = 1;
10133: $coowners = '';
10134: }
10135: }
10136: }
10137: if (@newcoowners || $delcoowners) {
10138: &store_coowners($cdom,$cnum,$coursehash{'home'},
10139: $delcoowners,@newcoowners);
10140: }
10141: }
10142: }
10143: }
10144: }
10145: }
10146: }
10147:
10148: sub store_coowners {
10149: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
10150: my $cid = $cdom.'_'.$cnum;
10151: my ($coowners,$delresult,$putresult);
10152: if (@newcoowners) {
10153: $coowners = join(',',@newcoowners);
10154: my %coownershash = (
10155: 'internal.co-owners' => $coowners,
10156: );
10157: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
10158: if ($putresult eq 'ok') {
10159: if ($env{'course.'.$cid.'.num'} eq $cnum) {
10160: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
10161: }
10162: }
10163: }
10164: if ($delcoowners) {
10165: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
10166: if ($delresult eq 'ok') {
10167: if ($env{'course.'.$cid.'.internal.co-owners'}) {
10168: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
10169: }
10170: }
10171: }
10172: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
10173: my %crsinfo =
10174: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
10175: if (ref($crsinfo{$cid}) eq 'HASH') {
10176: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
10177: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
10178: }
10179: }
10180: }
10181:
10182: # -------------------------------------------------- Modify user authentication
10183: # Overrides without validation
10184:
10185: sub modifyuserauth {
10186: my ($udom,$uname,$umode,$upass)=@_;
10187: my $uhome=&homeserver($uname,$udom);
10188: my $allowed;
10189: if (&allowed('mau',$udom)) {
10190: $allowed = 1;
10191: } elsif (($umode eq 'internal') && ($udom eq $env{'user.domain'}) &&
10192: ($env{'request.course.id'}) && (&allowed('mip',$env{'request.course.id'})) &&
10193: (!$env{'course.'.$env{'request.course.id'}.'.internal.nopasswdchg'})) {
10194: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
10195: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
10196: if (($cdom ne '') && ($cnum ne '')) {
10197: my $is_owner = &is_course_owner($cdom,$cnum);
10198: if ($is_owner) {
10199: $allowed = 1;
10200: }
10201: }
10202: }
10203: unless ($allowed) { return 'refused'; }
10204: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
10205: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
10206: ' in domain '.$env{'request.role.domain'});
10207: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
10208: &escape($upass),$uhome);
10209: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
10210: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
10211: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
10212: &log($udom,,$uname,$uhome,
10213: 'Authentication changed by '.$env{'user.domain'}.', '.
10214: $env{'user.name'}.', '.$umode.
10215: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
10216: unless ($reply eq 'ok') {
10217: &logthis('Authentication mode error: '.$reply);
10218: return 'error: '.$reply;
10219: }
10220: return 'ok';
10221: }
10222:
10223: # --------------------------------------------------------------- Modify a user
10224:
10225: sub modifyuser {
10226: my ($udom, $uname, $uid,
10227: $umode, $upass, $first,
10228: $middle, $last, $gene,
10229: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
10230: $udom= &LONCAPA::clean_domain($udom);
10231: $uname=&LONCAPA::clean_username($uname);
10232: my $showcandelete = 'none';
10233: if (ref($candelete) eq 'ARRAY') {
10234: if (@{$candelete} > 0) {
10235: $showcandelete = join(', ',@{$candelete});
10236: }
10237: }
10238: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
10239: $umode.', '.$first.', '.$middle.', '.
10240: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
10241: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
10242: ' desiredhome not specified').
10243: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
10244: ' in domain '.$env{'request.role.domain'});
10245: my $uhome=&homeserver($uname,$udom,'true');
10246: my $newuser;
10247: if ($uhome eq 'no_host') {
10248: $newuser = 1;
10249: unless (($umode && ($upass ne '')) || ($umode eq 'localauth') ||
10250: ($umode eq 'lti')) {
10251: return 'error: more information needed to create new user';
10252: }
10253: }
10254: # ----------------------------------------------------------------- Create User
10255: if (($uhome eq 'no_host') &&
10256: (($umode && $upass) || ($umode eq 'localauth') || ($umode eq 'lti'))) {
10257: my $unhome='';
10258: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
10259: $unhome = $desiredhome;
10260: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
10261: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
10262: } else { # load balancing routine for determining $unhome
10263: my $loadm=10000000;
10264: my %servers = &get_servers($udom,'library');
10265: foreach my $tryserver (keys(%servers)) {
10266: my $answer=reply('load',$tryserver);
10267: if (($answer=~/\d+/) && ($answer<$loadm)) {
10268: $loadm=$answer;
10269: $unhome=$tryserver;
10270: }
10271: }
10272: }
10273: if (($unhome eq '') || ($unhome eq 'no_host')) {
10274: return 'error: unable to find a home server for '.$uname.
10275: ' in domain '.$udom;
10276: }
10277: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
10278: &escape($upass),$unhome);
10279: unless ($reply eq 'ok') {
10280: return 'error: '.$reply;
10281: }
10282: $uhome=&homeserver($uname,$udom,'true');
10283: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
10284: return 'error: unable verify users home machine.';
10285: }
10286: } # End of creation of new user
10287: # ---------------------------------------------------------------------- Add ID
10288: if ($uid) {
10289: $uid=~tr/A-Z/a-z/;
10290: my %uidhash=&idrget($udom,$uname);
10291: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
10292: && (!$forceid)) {
10293: unless ($uid eq $uidhash{$uname}) {
10294: return 'error: user id "'.$uid.'" does not match '.
10295: 'current user id "'.$uidhash{$uname}.'".';
10296: }
10297: } else {
10298: &idput($udom,{$uname => $uid},$uhome,'ids');
10299: }
10300: }
10301: # -------------------------------------------------------------- Add names, etc
10302: my @tmp=&get('environment',
10303: ['firstname','middlename','lastname','generation','id',
10304: 'permanentemail','inststatus'],
10305: $udom,$uname);
10306: my (%names,%oldnames);
10307: if ($tmp[0] =~ m/^error:.*/) {
10308: %names=();
10309: } else {
10310: %names = @tmp;
10311: %oldnames = %names;
10312: }
10313: #
10314: # If name, email and/or uid are blank (e.g., because an uploaded file
10315: # of users did not contain them), do not overwrite existing values
10316: # unless field is in $candelete array ref.
10317: #
10318:
10319: my @fields = ('firstname','middlename','lastname','generation',
10320: 'permanentemail','id');
10321: my %newvalues;
10322: if (ref($candelete) eq 'ARRAY') {
10323: foreach my $field (@fields) {
10324: if (grep(/^\Q$field\E$/,@{$candelete})) {
10325: if ($field eq 'firstname') {
10326: $names{$field} = $first;
10327: } elsif ($field eq 'middlename') {
10328: $names{$field} = $middle;
10329: } elsif ($field eq 'lastname') {
10330: $names{$field} = $last;
10331: } elsif ($field eq 'generation') {
10332: $names{$field} = $gene;
10333: } elsif ($field eq 'permanentemail') {
10334: $names{$field} = $email;
10335: } elsif ($field eq 'id') {
10336: $names{$field} = $uid;
10337: }
10338: }
10339: }
10340: }
10341: if ($first) { $names{'firstname'} = $first; }
10342: if (defined($middle)) { $names{'middlename'} = $middle; }
10343: if ($last) { $names{'lastname'} = $last; }
10344: if (defined($gene)) { $names{'generation'} = $gene; }
10345: if ($email) {
10346: $email=~s/[^\w\@\.\-\,]//gs;
10347: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
10348: }
10349: if ($uid) { $names{'id'} = $uid; }
10350: if (defined($inststatus)) {
10351: $names{'inststatus'} = '';
10352: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
10353: if (ref($usertypes) eq 'HASH') {
10354: my @okstatuses;
10355: foreach my $item (split(/:/,$inststatus)) {
10356: if (defined($usertypes->{$item})) {
10357: push(@okstatuses,$item);
10358: }
10359: }
10360: if (@okstatuses) {
10361: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
10362: }
10363: }
10364: }
10365: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
10366: $umode.', '.$first.', '.$middle.', '.
10367: $last.', '.$gene.', '.$email.', '.$inststatus;
10368: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
10369: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
10370: } else {
10371: $logmsg .= ' during self creation';
10372: }
10373: my $changed;
10374: if ($newuser) {
10375: $changed = 1;
10376: } else {
10377: foreach my $field (@fields) {
10378: if ($names{$field} ne $oldnames{$field}) {
10379: $changed = 1;
10380: last;
10381: }
10382: }
10383: }
10384: unless ($changed) {
10385: $logmsg = 'No changes in user information needed for: '.$logmsg;
10386: &logthis($logmsg);
10387: return 'ok';
10388: }
10389: my $reply = &put('environment', \%names, $udom,$uname);
10390: if ($reply ne 'ok') {
10391: return 'error: '.$reply;
10392: }
10393: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
10394: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
10395: }
10396: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
10397: &devalidate_cache_new('namescache',$uname.':'.$udom);
10398: $logmsg = 'Success modifying user '.$logmsg;
10399: &logthis($logmsg);
10400: return 'ok';
10401: }
10402:
10403: # -------------------------------------------------------------- Modify student
10404:
10405: sub modifystudent {
10406: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
10407: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
10408: $selfenroll,$context,$inststatus,$credits,$instsec)=@_;
10409: if (!$cid) {
10410: unless ($cid=$env{'request.course.id'}) {
10411: return 'not_in_class';
10412: }
10413: }
10414: # --------------------------------------------------------------- Make the user
10415: my $reply=&modifyuser
10416: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
10417: $desiredhome,$email,$inststatus);
10418: unless ($reply eq 'ok') { return $reply; }
10419: # This will cause &modify_student_enrollment to get the uid from the
10420: # student's environment
10421: $uid = undef if (!$forceid);
10422: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
10423: $gene,$usec,$end,$start,$type,$locktype,
10424: $cid,$selfenroll,$context,$credits,$instsec);
10425: return $reply;
10426: }
10427:
10428: sub modify_student_enrollment {
10429: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
10430: $locktype,$cid,$selfenroll,$context,$credits,$instsec) = @_;
10431: my ($cdom,$cnum,$chome);
10432: if (!$cid) {
10433: unless ($cid=$env{'request.course.id'}) {
10434: return 'not_in_class';
10435: }
10436: $cdom=$env{'course.'.$cid.'.domain'};
10437: $cnum=$env{'course.'.$cid.'.num'};
10438: } else {
10439: ($cdom,$cnum)=split(/_/,$cid);
10440: }
10441: $chome=$env{'course.'.$cid.'.home'};
10442: if (!$chome) {
10443: $chome=&homeserver($cnum,$cdom);
10444: }
10445: if (!$chome) { return 'unknown_course'; }
10446: # Make sure the user exists
10447: my $uhome=&homeserver($uname,$udom);
10448: if (($uhome eq '') || ($uhome eq 'no_host')) {
10449: return 'error: no such user';
10450: }
10451: # Get student data if we were not given enough information
10452: if (!defined($first) || $first eq '' ||
10453: !defined($last) || $last eq '' ||
10454: !defined($uid) || $uid eq '' ||
10455: !defined($middle) || $middle eq '' ||
10456: !defined($gene) || $gene eq '') {
10457: # They did not supply us with enough data to enroll the student, so
10458: # we need to pick up more information.
10459: my %tmp = &get('environment',
10460: ['firstname','middlename','lastname', 'generation','id']
10461: ,$udom,$uname);
10462:
10463: #foreach my $key (keys(%tmp)) {
10464: # &logthis("key $key = ".$tmp{$key});
10465: #}
10466: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
10467: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
10468: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
10469: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
10470: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
10471: }
10472: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
10473: my $user = "$uname:$udom";
10474: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
10475: my $reply=cput('classlist',
10476: {$user =>
10477: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits,$instsec) },
10478: $cdom,$cnum);
10479: if (($reply eq 'ok') || ($reply eq 'delayed')) {
10480: &devalidate_getsection_cache($udom,$uname,$cid);
10481: } else {
10482: return 'error: '.$reply;
10483: }
10484: # Add student role to user
10485: my $uurl='/'.$cid;
10486: $uurl=~s/\_/\//g;
10487: if ($usec) {
10488: $uurl.='/'.$usec;
10489: }
10490: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
10491: $selfenroll,$context);
10492: if ($result ne 'ok') {
10493: if ($old_entry{$user} ne '') {
10494: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
10495: } else {
10496: $reply = &del('classlist',[$user],$cdom,$cnum);
10497: }
10498: }
10499: return $result;
10500: }
10501:
10502: sub format_name {
10503: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
10504: my $name;
10505: if ($first ne 'lastname') {
10506: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
10507: } else {
10508: if ($lastname=~/\S/) {
10509: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
10510: $name=~s/\s+,/,/;
10511: } else {
10512: $name.= $firstname.' '.$middlename.' '.$generation;
10513: }
10514: }
10515: $name=~s/^\s+//;
10516: $name=~s/\s+$//;
10517: $name=~s/\s+/ /g;
10518: return $name;
10519: }
10520:
10521: # ------------------------------------------------- Write to course preferences
10522:
10523: sub writecoursepref {
10524: my ($courseid,%prefs)=@_;
10525: $courseid=~s/^\///;
10526: $courseid=~s/\_/\//g;
10527: my ($cdomain,$cnum)=split(/\//,$courseid);
10528: my $chome=homeserver($cnum,$cdomain);
10529: if (($chome eq '') || ($chome eq 'no_host')) {
10530: return 'error: no such course';
10531: }
10532: my $cstring='';
10533: foreach my $pref (keys(%prefs)) {
10534: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
10535: }
10536: $cstring=~s/\&$//;
10537: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
10538: }
10539:
10540: # ---------------------------------------------------------- Make/modify course
10541:
10542: sub createcourse {
10543: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
10544: $course_owner,$crstype,$cnum,$context,$category)=@_;
10545: $url=&declutter($url);
10546: my $cid='';
10547: if ($context eq 'requestcourses') {
10548: my $can_create = 0;
10549: my ($ownername,$ownerdom) = split(':',$course_owner);
10550: if ($udom eq $ownerdom) {
10551: if (&usertools_access($ownername,$ownerdom,$category,undef,
10552: $context)) {
10553: $can_create = 1;
10554: }
10555: } else {
10556: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
10557: $category);
10558: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
10559: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
10560: if (@curr > 0) {
10561: my @options = qw(approval validate autolimit);
10562: my $optregex = join('|',@options);
10563: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
10564: $can_create = 1;
10565: }
10566: }
10567: }
10568: }
10569: if ($can_create) {
10570: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
10571: unless (&allowed('ccc',$udom)) {
10572: return 'refused';
10573: }
10574: }
10575: } else {
10576: return 'refused';
10577: }
10578: } elsif (!&allowed('ccc',$udom)) {
10579: return 'refused';
10580: }
10581: # --------------------------------------------------------------- Get Unique ID
10582: my $uname;
10583: if ($cnum =~ /^$match_courseid$/) {
10584: my $chome=&homeserver($cnum,$udom,'true');
10585: if (($chome eq '') || ($chome eq 'no_host')) {
10586: $uname = $cnum;
10587: } else {
10588: $uname = &generate_coursenum($udom,$crstype);
10589: }
10590: } else {
10591: $uname = &generate_coursenum($udom,$crstype);
10592: }
10593: return $uname if ($uname =~ /^error/);
10594: # -------------------------------------------------- Check supplied server name
10595: if (!defined($course_server)) {
10596: if (defined(&domain($udom,'primary'))) {
10597: $course_server = &domain($udom,'primary');
10598: } else {
10599: $course_server = $env{'user.home'};
10600: }
10601: }
10602: my %host_servers =
10603: &Apache::lonnet::get_servers($udom,'library');
10604: unless ($host_servers{$course_server}) {
10605: return 'error: invalid home server for course: '.$course_server;
10606: }
10607: # ------------------------------------------------------------- Make the course
10608: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
10609: $course_server);
10610: unless ($reply eq 'ok') { return 'error: '.$reply; }
10611: my $uhome=&homeserver($uname,$udom,'true');
10612: if (($uhome eq '') || ($uhome eq 'no_host')) {
10613: return 'error: no such course';
10614: }
10615: # ----------------------------------------------------------------- Course made
10616: # log existence
10617: my $now = time;
10618: my $newcourse = {
10619: $udom.'_'.$uname => {
10620: description => $description,
10621: inst_code => $inst_code,
10622: owner => $course_owner,
10623: type => $crstype,
10624: creator => $env{'user.name'}.':'.
10625: $env{'user.domain'},
10626: created => $now,
10627: context => $context,
10628: },
10629: };
10630: &courseidput($udom,$newcourse,$uhome,'notime');
10631: # set toplevel url
10632: my $topurl=$url;
10633: unless ($nonstandard) {
10634: # ------------------------------------------ For standard courses, make top url
10635: my $mapurl=&clutter($url);
10636: if ($mapurl eq '/res/') { $mapurl=''; }
10637: $env{'form.initmap'}=(<<ENDINITMAP);
10638: <map>
10639: <resource id="1" type="start"></resource>
10640: <resource id="2" src="$mapurl"></resource>
10641: <resource id="3" type="finish"></resource>
10642: <link index="1" from="1" to="2"></link>
10643: <link index="2" from="2" to="3"></link>
10644: </map>
10645: ENDINITMAP
10646: $topurl=&declutter(
10647: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
10648: );
10649: }
10650: # ----------------------------------------------------------- Write preferences
10651: &writecoursepref($udom.'_'.$uname,
10652: ('description' => $description,
10653: 'url' => $topurl,
10654: 'internal.creator' => $env{'user.name'}.':'.
10655: $env{'user.domain'},
10656: 'internal.created' => $now,
10657: 'internal.creationcontext' => $context)
10658: );
10659: return '/'.$udom.'/'.$uname;
10660: }
10661:
10662: # ------------------------------------------------------------------- Create ID
10663: sub generate_coursenum {
10664: my ($udom,$crstype) = @_;
10665: my $domdesc = &domain($udom);
10666: return 'error: invalid domain' if ($domdesc eq '');
10667: my $first;
10668: if ($crstype eq 'Community') {
10669: $first = '0';
10670: } else {
10671: $first = int(1+rand(9));
10672: }
10673: my $uname=$first.
10674: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
10675: substr($$.time,0,5).unpack("H8",pack("I32",time)).
10676: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
10677: # ----------------------------------------------- Make sure that does not exist
10678: my $uhome=&homeserver($uname,$udom,'true');
10679: unless (($uhome eq '') || ($uhome eq 'no_host')) {
10680: if ($crstype eq 'Community') {
10681: $first = '0';
10682: } else {
10683: $first = int(1+rand(9));
10684: }
10685: $uname=$first.
10686: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
10687: substr($$.time,0,5).unpack("H8",pack("I32",time)).
10688: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
10689: $uhome=&homeserver($uname,$udom,'true');
10690: unless (($uhome eq '') || ($uhome eq 'no_host')) {
10691: return 'error: unable to generate unique course-ID';
10692: }
10693: }
10694: return $uname;
10695: }
10696:
10697: sub is_course {
10698: my ($cdom, $cnum) = scalar(@_) == 1 ?
10699: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
10700:
10701: return unless (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/));
10702: my $uhome=&homeserver($cnum,$cdom);
10703: my $iscourse;
10704: if (grep { $_ eq $uhome } current_machine_ids()) {
10705: $iscourse = &LONCAPA::Lond::is_course($cdom,$cnum);
10706: } else {
10707: my $hashid = $cdom.':'.$cnum;
10708: ($iscourse,my $cached) = &is_cached_new('iscourse',$hashid);
10709: unless (defined($cached)) {
10710: my %courses = &courseiddump($cdom, '.', 1, '.', '.',
10711: $cnum,undef,undef,'.');
10712: $iscourse = 0;
10713: if (exists($courses{$cdom.'_'.$cnum})) {
10714: $iscourse = 1;
10715: }
10716: &do_cache_new('iscourse',$hashid,$iscourse,3600);
10717: }
10718: }
10719: return unless ($iscourse);
10720: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
10721: }
10722:
10723: sub store_userdata {
10724: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
10725: my $result;
10726: if ($datakey ne '') {
10727: if (ref($storehash) eq 'HASH') {
10728: if ($udom eq '' || $uname eq '') {
10729: $udom = $env{'user.domain'};
10730: $uname = $env{'user.name'};
10731: }
10732: my $uhome=&homeserver($uname,$udom);
10733: if (($uhome eq '') || ($uhome eq 'no_host')) {
10734: $result = 'error: no_host';
10735: } else {
10736: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
10737: $storehash->{'host'} = $perlvar{'lonHostID'};
10738:
10739: my $namevalue='';
10740: foreach my $key (keys(%{$storehash})) {
10741: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
10742: }
10743: $namevalue=~s/\&$//;
10744: unless ($namespace eq 'courserequests') {
10745: $datakey = &escape($datakey);
10746: }
10747: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
10748: $namevalue,$uhome);
10749: }
10750: } else {
10751: $result = 'error: data to store was not a hash reference';
10752: }
10753: } else {
10754: $result= 'error: invalid requestkey';
10755: }
10756: return $result;
10757: }
10758:
10759: # ---------------------------------------------------------- Assign Custom Role
10760:
10761: sub assigncustomrole {
10762: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
10763: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
10764: $end,$start,$deleteflag,$selfenroll,$context);
10765: }
10766:
10767: # ----------------------------------------------------------------- Revoke Role
10768:
10769: sub revokerole {
10770: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
10771: my $now=time;
10772: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
10773: }
10774:
10775: # ---------------------------------------------------------- Revoke Custom Role
10776:
10777: sub revokecustomrole {
10778: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
10779: my $now=time;
10780: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
10781: $deleteflag,$selfenroll,$context);
10782: }
10783:
10784: # ------------------------------------------------------------ Disk usage
10785: sub diskusage {
10786: my ($udom,$uname,$directorypath,$getpropath)=@_;
10787: $directorypath =~ s/\/$//;
10788: my $listing=&reply('du2:'.&escape($directorypath).':'
10789: .&escape($getpropath).':'.&escape($uname).':'
10790: .&escape($udom),homeserver($uname,$udom));
10791: if ($listing eq 'unknown_cmd') {
10792: if ($getpropath) {
10793: $directorypath = &propath($udom,$uname).'/'.$directorypath;
10794: }
10795: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
10796: }
10797: return $listing;
10798: }
10799:
10800: sub is_locked {
10801: my ($file_name, $domain, $user, $which) = @_;
10802: my @check;
10803: my $is_locked;
10804: push (@check,$file_name);
10805: my %locked = &get('file_permissions',\@check,
10806: $env{'user.domain'},$env{'user.name'});
10807: my ($tmp)=keys(%locked);
10808: if ($tmp=~/^error:/) { undef(%locked); }
10809:
10810: if (ref($locked{$file_name}) eq 'ARRAY') {
10811: $is_locked = 'false';
10812: foreach my $entry (@{$locked{$file_name}}) {
10813: if (ref($entry) eq 'ARRAY') {
10814: $is_locked = 'true';
10815: if (ref($which) eq 'ARRAY') {
10816: push(@{$which},$entry);
10817: } else {
10818: last;
10819: }
10820: }
10821: }
10822: } else {
10823: $is_locked = 'false';
10824: }
10825: return $is_locked;
10826: }
10827:
10828: sub declutter_portfile {
10829: my ($file) = @_;
10830: $file =~ s{^(/portfolio/|portfolio/)}{/};
10831: return $file;
10832: }
10833:
10834: # ------------------------------------------------------------- Mark as Read Only
10835:
10836: sub mark_as_readonly {
10837: my ($domain,$user,$files,$what) = @_;
10838: my %current_permissions = &dump('file_permissions',$domain,$user);
10839: my ($tmp)=keys(%current_permissions);
10840: if ($tmp=~/^error:/) { undef(%current_permissions); }
10841: foreach my $file (@{$files}) {
10842: $file = &declutter_portfile($file);
10843: push(@{$current_permissions{$file}},$what);
10844: }
10845: &put('file_permissions',\%current_permissions,$domain,$user);
10846: return;
10847: }
10848:
10849: # ------------------------------------------------------------Save Selected Files
10850:
10851: sub save_selected_files {
10852: my ($user, $path, @files) = @_;
10853: my $filename = $user."savedfiles";
10854: my @other_files = &files_not_in_path($user, $path);
10855: open (OUT,'>',LONCAPA::tempdir().$filename);
10856: foreach my $file (@files) {
10857: print (OUT $env{'form.currentpath'}.$file."\n");
10858: }
10859: foreach my $file (@other_files) {
10860: print (OUT $file."\n");
10861: }
10862: close (OUT);
10863: return 'ok';
10864: }
10865:
10866: sub clear_selected_files {
10867: my ($user) = @_;
10868: my $filename = $user."savedfiles";
10869: open (OUT,'>',LONCAPA::tempdir().$filename);
10870: print (OUT undef);
10871: close (OUT);
10872: return ("ok");
10873: }
10874:
10875: sub files_in_path {
10876: my ($user, $path) = @_;
10877: my $filename = $user."savedfiles";
10878: my %return_files;
10879: open (IN,'<',LONCAPA::tempdir().$filename);
10880: while (my $line_in = <IN>) {
10881: chomp ($line_in);
10882: my @paths_and_file = split (m!/!, $line_in);
10883: my $file_part = pop (@paths_and_file);
10884: my $path_part = join ('/', @paths_and_file);
10885: $path_part.='/';
10886: my $path_and_file = $path_part.$file_part;
10887: if ($path_part eq $path) {
10888: $return_files{$file_part}= 'selected';
10889: }
10890: }
10891: close (IN);
10892: return (\%return_files);
10893: }
10894:
10895: # called in portfolio select mode, to show files selected NOT in current directory
10896: sub files_not_in_path {
10897: my ($user, $path) = @_;
10898: my $filename = $user."savedfiles";
10899: my @return_files;
10900: my $path_part;
10901: open(IN, '<',LONCAPA::tempdir().$filename);
10902: while (my $line = <IN>) {
10903: #ok, I know it's clunky, but I want it to work
10904: my @paths_and_file = split(m|/|, $line);
10905: my $file_part = pop(@paths_and_file);
10906: chomp($file_part);
10907: my $path_part = join('/', @paths_and_file);
10908: $path_part .= '/';
10909: my $path_and_file = $path_part.$file_part;
10910: if ($path_part ne $path) {
10911: push(@return_files, ($path_and_file));
10912: }
10913: }
10914: close(OUT);
10915: return (@return_files);
10916: }
10917:
10918: #------------------------------Submitted/Handedback Portfolio Files Versioning
10919:
10920: sub portfiles_versioning {
10921: my ($symb,$domain,$stu_name,$portfiles,$versioned_portfiles) = @_;
10922: my $portfolio_root = '/userfiles/portfolio';
10923: return unless ((ref($portfiles) eq 'ARRAY') && (ref($versioned_portfiles) eq 'ARRAY'));
10924: foreach my $file (@{$portfiles}) {
10925: &unmark_as_readonly($domain,$stu_name,[$symb,$env{'request.course.id'}],$file);
10926: my ($directory,$answer_file) =($file =~ /^(.*?)([^\/]*)$/);
10927: my ($answer_name,$answer_ver,$answer_ext) = &file_name_version_ext($answer_file);
10928: my $getpropath = 1;
10929: my ($dir_list,$listerror) = &dirlist($portfolio_root.$directory,$domain,
10930: $stu_name,$getpropath);
10931: my $version = &get_next_version($answer_name,$answer_ext,$dir_list);
10932: my $new_answer =
10933: &version_selected_portfile($domain,$stu_name,$directory,$answer_file,$version);
10934: if ($new_answer ne 'problem getting file') {
10935: push(@{$versioned_portfiles}, $directory.$new_answer);
10936: &mark_as_readonly($domain,$stu_name,[$directory.$new_answer],
10937: [$symb,$env{'request.course.id'},'graded']);
10938: }
10939: }
10940: }
10941:
10942: sub get_next_version {
10943: my ($answer_name, $answer_ext, $dir_list) = @_;
10944: my $version;
10945: if (ref($dir_list) eq 'ARRAY') {
10946: foreach my $row (@{$dir_list}) {
10947: my ($file) = split(/\&/,$row,2);
10948: my ($file_name,$file_version,$file_ext) =
10949: &file_name_version_ext($file);
10950: if (($file_name eq $answer_name) &&
10951: ($file_ext eq $answer_ext)) {
10952: # gets here if filename and extension match,
10953: # regardless of version
10954: if ($file_version ne '') {
10955: # a versioned file is found so save it for later
10956: if ($file_version > $version) {
10957: $version = $file_version;
10958: }
10959: }
10960: }
10961: }
10962: }
10963: $version ++;
10964: return($version);
10965: }
10966:
10967: sub version_selected_portfile {
10968: my ($domain,$stu_name,$directory,$file_name,$version) = @_;
10969: my ($answer_name,$answer_ver,$answer_ext) =
10970: &file_name_version_ext($file_name);
10971: my $new_answer;
10972: $env{'form.copy'} =
10973: &getfile("/uploaded/$domain/$stu_name/portfolio$directory$file_name");
10974: if($env{'form.copy'} eq '-1') {
10975: $new_answer = 'problem getting file';
10976: } else {
10977: $new_answer = $answer_name.'.'.$version.'.'.$answer_ext;
10978: my $copy_result =
10979: &finishuserfileupload($stu_name,$domain,'copy',
10980: '/portfolio'.$directory.$new_answer);
10981: }
10982: undef($env{'form.copy'});
10983: return ($new_answer);
10984: }
10985:
10986: sub file_name_version_ext {
10987: my ($file)=@_;
10988: my @file_parts = split(/\./, $file);
10989: my ($name,$version,$ext);
10990: if (@file_parts > 1) {
10991: $ext=pop(@file_parts);
10992: if (@file_parts > 1 && $file_parts[-1] =~ /^\d+$/) {
10993: $version=pop(@file_parts);
10994: }
10995: $name=join('.',@file_parts);
10996: } else {
10997: $name=join('.',@file_parts);
10998: }
10999: return($name,$version,$ext);
11000: }
11001:
11002: #----------------------------------------------Get portfolio file permissions
11003:
11004: sub get_portfile_permissions {
11005: my ($domain,$user) = @_;
11006: my %current_permissions = &dump('file_permissions',$domain,$user);
11007: my ($tmp)=keys(%current_permissions);
11008: if ($tmp=~/^error:/) { undef(%current_permissions); }
11009: return \%current_permissions;
11010: }
11011:
11012: #---------------------------------------------Get portfolio file access controls
11013:
11014: sub get_access_controls {
11015: my ($current_permissions,$group,$file) = @_;
11016: my %access;
11017: my $real_file = $file;
11018: $file =~ s/\.meta$//;
11019: if (defined($file)) {
11020: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
11021: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
11022: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
11023: }
11024: }
11025: } else {
11026: foreach my $key (keys(%{$current_permissions})) {
11027: if ($key =~ /\0accesscontrol$/) {
11028: if (defined($group)) {
11029: if ($key !~ m-^\Q$group\E/-) {
11030: next;
11031: }
11032: }
11033: my ($fullpath) = split(/\0/,$key);
11034: if (ref($$current_permissions{$key}) eq 'HASH') {
11035: foreach my $control (keys(%{$$current_permissions{$key}})) {
11036: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
11037: }
11038: }
11039: }
11040: }
11041: }
11042: return %access;
11043: }
11044:
11045: sub modify_access_controls {
11046: my ($file_name,$changes,$domain,$user)=@_;
11047: my ($outcome,$deloutcome);
11048: my %store_permissions;
11049: my %new_values;
11050: my %new_control;
11051: my %translation;
11052: my @deletions = ();
11053: my $now = time;
11054: if (exists($$changes{'activate'})) {
11055: if (ref($$changes{'activate'}) eq 'HASH') {
11056: my @newitems = sort(keys(%{$$changes{'activate'}}));
11057: my $numnew = scalar(@newitems);
11058: for (my $i=0; $i<$numnew; $i++) {
11059: my $newkey = $newitems[$i];
11060: my $newid = &Apache::loncommon::get_cgi_id();
11061: if ($newkey =~ /^\d+:/) {
11062: $newkey =~ s/^(\d+)/$newid/;
11063: $translation{$1} = $newid;
11064: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
11065: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
11066: $translation{$1} = $newid;
11067: }
11068: $new_values{$file_name."\0".$newkey} =
11069: $$changes{'activate'}{$newitems[$i]};
11070: $new_control{$newkey} = $now;
11071: }
11072: }
11073: }
11074: my %todelete;
11075: my %changed_items;
11076: foreach my $action ('delete','update') {
11077: if (exists($$changes{$action})) {
11078: if (ref($$changes{$action}) eq 'HASH') {
11079: foreach my $key (keys(%{$$changes{$action}})) {
11080: my ($itemnum) = ($key =~ /^([^:]+):/);
11081: if ($action eq 'delete') {
11082: $todelete{$itemnum} = 1;
11083: } else {
11084: $changed_items{$itemnum} = $key;
11085: }
11086: }
11087: }
11088: }
11089: }
11090: # get lock on access controls for file.
11091: my $lockhash = {
11092: $file_name."\0".'locked_access_records' => $env{'user.name'}.
11093: ':'.$env{'user.domain'},
11094: };
11095: my $tries = 0;
11096: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
11097:
11098: while (($gotlock ne 'ok') && $tries < 10) {
11099: $tries ++;
11100: sleep(0.1);
11101: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
11102: }
11103: if ($gotlock eq 'ok') {
11104: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
11105: my ($tmp)=keys(%curr_permissions);
11106: if ($tmp=~/^error:/) { undef(%curr_permissions); }
11107: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
11108: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
11109: if (ref($curr_controls) eq 'HASH') {
11110: foreach my $control_item (keys(%{$curr_controls})) {
11111: my ($itemnum) = ($control_item =~ /^([^:]+):/);
11112: if (defined($todelete{$itemnum})) {
11113: push(@deletions,$file_name."\0".$control_item);
11114: } else {
11115: if (defined($changed_items{$itemnum})) {
11116: $new_control{$changed_items{$itemnum}} = $now;
11117: push(@deletions,$file_name."\0".$control_item);
11118: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
11119: } else {
11120: $new_control{$control_item} = $$curr_controls{$control_item};
11121: }
11122: }
11123: }
11124: }
11125: }
11126: my ($group);
11127: if (&is_course($domain,$user)) {
11128: ($group,my $file) = split(/\//,$file_name,2);
11129: }
11130: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
11131: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
11132: $outcome = &put('file_permissions',\%new_values,$domain,$user);
11133: # remove lock
11134: my @del_lock = ($file_name."\0".'locked_access_records');
11135: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
11136: my $sqlresult =
11137: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
11138: $group);
11139: } else {
11140: $outcome = "error: could not obtain lockfile\n";
11141: }
11142: return ($outcome,$deloutcome,\%new_values,\%translation);
11143: }
11144:
11145: sub make_public_indefinitely {
11146: my (@requrl) = @_;
11147: return &automated_portfile_access('public',\@requrl);
11148: }
11149:
11150: sub automated_portfile_access {
11151: my ($accesstype,$addsref,$delsref,$info) = @_;
11152: unless (($accesstype eq 'public') || ($accesstype eq 'ip')) {
11153: return 'invalid';
11154: }
11155: my %urls;
11156: if (ref($addsref) eq 'ARRAY') {
11157: foreach my $requrl (@{$addsref}) {
11158: if (&is_portfolio_url($requrl)) {
11159: unless (exists($urls{$requrl})) {
11160: $urls{$requrl} = 'add';
11161: }
11162: }
11163: }
11164: }
11165: if (ref($delsref) eq 'ARRAY') {
11166: foreach my $requrl (@{$delsref}) {
11167: if (&is_portfolio_url($requrl)) {
11168: unless (exists($urls{$requrl})) {
11169: $urls{$requrl} = 'delete';
11170: }
11171: }
11172: }
11173: }
11174: unless (keys(%urls)) {
11175: return 'invalid';
11176: }
11177: my $ip;
11178: if ($accesstype eq 'ip') {
11179: if (ref($info) eq 'HASH') {
11180: if ($info->{'ip'} ne '') {
11181: $ip = $info->{'ip'};
11182: }
11183: }
11184: if ($ip eq '') {
11185: return 'invalid';
11186: }
11187: }
11188: my $errors;
11189: my $now = time;
11190: my %current_perms;
11191: foreach my $requrl (sort(keys(%urls))) {
11192: my $action;
11193: if ($urls{$requrl} eq 'add') {
11194: $action = 'activate';
11195: } else {
11196: $action = 'none';
11197: }
11198: my $aclnum = 0;
11199: my (undef,$udom,$unum,$file_name,$group) =
11200: &parse_portfolio_url($requrl);
11201: unless (exists($current_perms{$unum.':'.$udom})) {
11202: $current_perms{$unum.':'.$udom} = &get_portfile_permissions($udom,$unum);
11203: }
11204: my %access_controls = &get_access_controls($current_perms{$unum.':'.$udom},
11205: $group,$file_name);
11206: foreach my $key (keys(%{$access_controls{$file_name}})) {
11207: my ($num,$scope,$end,$start) =
11208: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
11209: if ($scope eq $accesstype) {
11210: if (($start <= $now) && ($end == 0)) {
11211: if ($accesstype eq 'ip') {
11212: if (ref($access_controls{$file_name}{$key}) eq 'HASH') {
11213: if (ref($access_controls{$file_name}{$key}{'ip'}) eq 'ARRAY') {
11214: if (grep(/^\Q$ip\E$/,@{$access_controls{$file_name}{$key}{'ip'}})) {
11215: if ($urls{$requrl} eq 'add') {
11216: $action = 'none';
11217: last;
11218: } else {
11219: $action = 'delete';
11220: $aclnum = $num;
11221: last;
11222: }
11223: }
11224: }
11225: }
11226: } elsif ($accesstype eq 'public') {
11227: if ($urls{$requrl} eq 'add') {
11228: $action = 'none';
11229: last;
11230: } else {
11231: $action = 'delete';
11232: $aclnum = $num;
11233: last;
11234: }
11235: }
11236: } elsif ($accesstype eq 'public') {
11237: $action = 'update';
11238: $aclnum = $num;
11239: last;
11240: }
11241: }
11242: }
11243: if ($action eq 'none') {
11244: next;
11245: } else {
11246: my %changes;
11247: my $newend = 0;
11248: my $newstart = $now;
11249: my $newkey = $aclnum.':'.$accesstype.'_'.$newend.'_'.$newstart;
11250: $changes{$action}{$newkey} = {
11251: type => $accesstype,
11252: time => {
11253: start => $newstart,
11254: end => $newend,
11255: },
11256: };
11257: if ($accesstype eq 'ip') {
11258: $changes{$action}{$newkey}{'ip'} = [$ip];
11259: }
11260: my ($outcome,$deloutcome,$new_values,$translation) =
11261: &modify_access_controls($file_name,\%changes,$udom,$unum);
11262: unless ($outcome eq 'ok') {
11263: $errors .= $outcome.' ';
11264: }
11265: }
11266: }
11267: if ($errors) {
11268: $errors =~ s/\s$//;
11269: return $errors;
11270: } else {
11271: return 'ok';
11272: }
11273: }
11274:
11275: #------------------------------------------------------Get Marked as Read Only
11276:
11277: sub get_marked_as_readonly {
11278: my ($domain,$user,$what,$group) = @_;
11279: my $current_permissions = &get_portfile_permissions($domain,$user);
11280: my @readonly_files;
11281: my $cmp1=$what;
11282: if (ref($what)) { $cmp1=join('',@{$what}) };
11283: while (my ($file_name,$value) = each(%{$current_permissions})) {
11284: if (defined($group)) {
11285: if ($file_name !~ m-^\Q$group\E/-) {
11286: next;
11287: }
11288: }
11289: if (ref($value) eq "ARRAY"){
11290: foreach my $stored_what (@{$value}) {
11291: my $cmp2=$stored_what;
11292: if (ref($stored_what) eq 'ARRAY') {
11293: $cmp2=join('',@{$stored_what});
11294: }
11295: if ($cmp1 eq $cmp2) {
11296: push(@readonly_files, $file_name);
11297: last;
11298: } elsif (!defined($what)) {
11299: push(@readonly_files, $file_name);
11300: last;
11301: }
11302: }
11303: }
11304: }
11305: return @readonly_files;
11306: }
11307: #-----------------------------------------------------------Get Marked as Read Only Hash
11308:
11309: sub get_marked_as_readonly_hash {
11310: my ($current_permissions,$group,$what) = @_;
11311: my %readonly_files;
11312: while (my ($file_name,$value) = each(%{$current_permissions})) {
11313: if (defined($group)) {
11314: if ($file_name !~ m-^\Q$group\E/-) {
11315: next;
11316: }
11317: }
11318: if (ref($value) eq "ARRAY"){
11319: foreach my $stored_what (@{$value}) {
11320: if (ref($stored_what) eq 'ARRAY') {
11321: foreach my $lock_descriptor(@{$stored_what}) {
11322: if ($lock_descriptor eq 'graded') {
11323: $readonly_files{$file_name} = 'graded';
11324: } elsif ($lock_descriptor eq 'handback') {
11325: $readonly_files{$file_name} = 'handback';
11326: } else {
11327: if (!exists($readonly_files{$file_name})) {
11328: $readonly_files{$file_name} = 'locked';
11329: }
11330: }
11331: }
11332: }
11333: }
11334: }
11335: }
11336: return %readonly_files;
11337: }
11338: # ------------------------------------------------------------ Unmark as Read Only
11339:
11340: sub unmark_as_readonly {
11341: # unmarks $file_name (if $file_name is defined), or all files locked by $what
11342: # for portfolio submissions, $what contains [$symb,$crsid]
11343: my ($domain,$user,$what,$file_name,$group) = @_;
11344: $file_name = &declutter_portfile($file_name);
11345: my $symb_crs = $what;
11346: if (ref($what)) { $symb_crs=join('',@$what); }
11347: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
11348: my ($tmp)=keys(%current_permissions);
11349: if ($tmp=~/^error:/) { undef(%current_permissions); }
11350: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
11351: foreach my $file (@readonly_files) {
11352: my $clean_file = &declutter_portfile($file);
11353: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
11354: my $current_locks = $current_permissions{$file};
11355: my @new_locks;
11356: my @del_keys;
11357: if (ref($current_locks) eq "ARRAY"){
11358: foreach my $locker (@{$current_locks}) {
11359: my $compare=$locker;
11360: if (ref($locker) eq 'ARRAY') {
11361: $compare=join('',@{$locker});
11362: if ($compare ne $symb_crs) {
11363: push(@new_locks, $locker);
11364: }
11365: }
11366: }
11367: if (scalar(@new_locks) > 0) {
11368: $current_permissions{$file} = \@new_locks;
11369: } else {
11370: push(@del_keys, $file);
11371: &del('file_permissions',\@del_keys, $domain, $user);
11372: delete($current_permissions{$file});
11373: }
11374: }
11375: }
11376: &put('file_permissions',\%current_permissions,$domain,$user);
11377: return;
11378: }
11379:
11380: # ------------------------------------------------------------ Directory lister
11381:
11382: sub dirlist {
11383: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
11384: $uri=~s/^\///;
11385: $uri=~s/\/$//;
11386: my ($udom, $uname);
11387: if ($getuserdir) {
11388: $udom = $userdomain;
11389: $uname = $username;
11390: } else {
11391: (undef,$udom,$uname)=split(/\//,$uri);
11392: if(defined($userdomain)) {
11393: $udom = $userdomain;
11394: }
11395: if(defined($username)) {
11396: $uname = $username;
11397: }
11398: }
11399: my ($dirRoot,$listing,@listing_results);
11400:
11401: $dirRoot = $perlvar{'lonDocRoot'};
11402: if (defined($getpropath)) {
11403: $dirRoot = &propath($udom,$uname);
11404: $dirRoot =~ s/\/$//;
11405: } elsif (defined($getuserdir)) {
11406: my $subdir=$uname.'__';
11407: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
11408: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
11409: ."/$udom/$subdir/$uname";
11410: } elsif (defined($alternateRoot)) {
11411: $dirRoot = $alternateRoot;
11412: }
11413:
11414: if($udom) {
11415: if($uname) {
11416: my $uhome = &homeserver($uname,$udom);
11417: if ($uhome eq 'no_host') {
11418: return ([],'no_host');
11419: }
11420: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
11421: .$getuserdir.':'.&escape($dirRoot)
11422: .':'.&escape($uname).':'.&escape($udom),$uhome);
11423: if ($listing eq 'unknown_cmd') {
11424: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
11425: } else {
11426: @listing_results = map { &unescape($_); } split(/:/,$listing);
11427: }
11428: if ($listing eq 'unknown_cmd') {
11429: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
11430: @listing_results = split(/:/,$listing);
11431: } else {
11432: @listing_results = map { &unescape($_); } split(/:/,$listing);
11433: }
11434: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
11435: ($listing eq 'rejected') || ($listing eq 'refused') ||
11436: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
11437: return ([],$listing);
11438: } else {
11439: return (\@listing_results);
11440: }
11441: } elsif(!$alternateRoot) {
11442: my (%allusers,%listerror);
11443: my %servers = &get_servers($udom,'library');
11444: foreach my $tryserver (keys(%servers)) {
11445: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
11446: &escape($udom),$tryserver);
11447: if ($listing eq 'unknown_cmd') {
11448: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
11449: $udom, $tryserver);
11450: } else {
11451: @listing_results = map { &unescape($_); } split(/:/,$listing);
11452: }
11453: if ($listing eq 'unknown_cmd') {
11454: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
11455: $udom, $tryserver);
11456: @listing_results = split(/:/,$listing);
11457: } else {
11458: @listing_results =
11459: map { &unescape($_); } split(/:/,$listing);
11460: }
11461: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
11462: ($listing eq 'rejected') || ($listing eq 'refused') ||
11463: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
11464: $listerror{$tryserver} = $listing;
11465: } else {
11466: foreach my $line (@listing_results) {
11467: my ($entry) = split(/&/,$line,2);
11468: $allusers{$entry} = 1;
11469: }
11470: }
11471: }
11472: my @alluserslist=();
11473: foreach my $user (sort(keys(%allusers))) {
11474: push(@alluserslist,$user.'&user');
11475: }
11476:
11477: if (!%listerror) {
11478: # no errors
11479: return (\@alluserslist);
11480: } elsif (scalar(keys(%servers)) == 1) {
11481: # one library server, one error
11482: my ($key) = keys(%listerror);
11483: return (\@alluserslist, $listerror{$key});
11484: } elsif ( grep { $_ eq 'con_lost' } values(%listerror) ) {
11485: # con_lost indicates that we might miss data from at least one
11486: # library server
11487: return (\@alluserslist, 'con_lost');
11488: } else {
11489: # multiple library servers and no con_lost -> data should be
11490: # complete.
11491: return (\@alluserslist);
11492: }
11493:
11494: } else {
11495: return ([],'missing username');
11496: }
11497: } elsif(!defined($getpropath)) {
11498: my $path = $perlvar{'lonDocRoot'}.'/res/';
11499: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
11500: return (\@all_domains);
11501: } else {
11502: return ([],'missing domain');
11503: }
11504: }
11505:
11506: # --------------------------------------------- GetFileTimestamp
11507: # This function utilizes dirlist and returns the date stamp for
11508: # when it was last modified. It will also return an error of -1
11509: # if an error occurs
11510:
11511: sub GetFileTimestamp {
11512: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
11513: $studentDomain = &LONCAPA::clean_domain($studentDomain);
11514: $studentName = &LONCAPA::clean_username($studentName);
11515: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
11516: undef,$getuserdir);
11517: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
11518: return -1;
11519: }
11520: if (ref($fileref) eq 'ARRAY') {
11521: my @stats = split('&',$fileref->[0]);
11522: # @stats contains first the filename, then the stat output
11523: return $stats[10]; # so this is 10 instead of 9.
11524: } else {
11525: return -1;
11526: }
11527: }
11528:
11529: sub stat_file {
11530: my ($uri) = @_;
11531: $uri = &clutter_with_no_wrapper($uri);
11532:
11533: my ($udom,$uname,$file);
11534: if ($uri =~ m-^/(uploaded|editupload)/-) {
11535: ($udom,$uname,$file) =
11536: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
11537: $file = 'userfiles/'.$file;
11538: }
11539: if ($uri =~ m-^/res/-) {
11540: ($udom,$uname) =
11541: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
11542: $file = $uri;
11543: }
11544:
11545: if (!$udom || !$uname || !$file) {
11546: # unable to handle the uri
11547: return ();
11548: }
11549: my $getpropath;
11550: if ($file =~ /^userfiles\//) {
11551: $getpropath = 1;
11552: }
11553: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
11554: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
11555: return ();
11556: } else {
11557: if (ref($listref) eq 'ARRAY') {
11558: my @stats = split('&',$listref->[0]);
11559: shift(@stats); #filename is first
11560: return @stats;
11561: }
11562: }
11563: return ();
11564: }
11565:
11566: # --------------------------------------------------------- recursedirs
11567: # Recursive function to traverse either a specific user's Authoring Space
11568: # or corresponding Published Resource Space, and populate the hash ref:
11569: # $dirhashref with URLs of all directories, and if $filehashref hash
11570: # ref arg is provided, the URLs of any files, excluding versioned, .meta,
11571: # or .rights files in resource space, and .meta, .save, .log, and .bak
11572: # files in Authoring Space.
11573: #
11574: # Inputs:
11575: #
11576: # $is_home - true if current server is home server for user's space
11577: # $context - either: priv, or res respectively for Authoring or Resource Space.
11578: # $docroot - Document root (i.e., /home/httpd/html
11579: # $toppath - Top level directory (i.e., /res/$dom/$uname or /priv/$dom/$uname
11580: # $relpath - Current path (relative to top level).
11581: # $dirhashref - reference to hash to populate with URLs of directories (Required)
11582: # $filehashref - reference to hash to populate with URLs of files (Optional)
11583: #
11584: # Returns: nothing
11585: #
11586: # Side Effects: populates $dirhashref, and $filehashref (if provided).
11587: #
11588: # Currently used by interface/londocs.pm to create linked select boxes for
11589: # directory and filename to import a Course "Author" resource into a course, and
11590: # also to create linked select boxes for Authoring Space and Directory to choose
11591: # save location for creation of a new "standard" problem from the Course Editor.
11592: #
11593:
11594: sub recursedirs {
11595: my ($is_home,$context,$docroot,$toppath,$relpath,$dirhashref,$filehashref) = @_;
11596: return unless (ref($dirhashref) eq 'HASH');
11597: my $currpath = $docroot.$toppath;
11598: if ($relpath) {
11599: $currpath .= "/$relpath";
11600: }
11601: my $savefile;
11602: if (ref($filehashref)) {
11603: $savefile = 1;
11604: }
11605: if ($is_home) {
11606: if (opendir(my $dirh,$currpath)) {
11607: foreach my $item (sort { lc($a) cmp lc($b) } grep(!/^\.+$/,readdir($dirh))) {
11608: next if ($item eq '');
11609: if (-d "$currpath/$item") {
11610: my $newpath;
11611: if ($relpath) {
11612: $newpath = "$relpath/$item";
11613: } else {
11614: $newpath = $item;
11615: }
11616: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
11617: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
11618: } elsif ($savefile) {
11619: if ($context eq 'priv') {
11620: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
11621: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
11622: }
11623: } else {
11624: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/) || ($item =~ /\.rights$/)) {
11625: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
11626: }
11627: }
11628: }
11629: }
11630: closedir($dirh);
11631: }
11632: } else {
11633: my ($dirlistref,$listerror) =
11634: &dirlist($toppath.$relpath);
11635: my @dir_lines;
11636: my $dirptr=16384;
11637: if (ref($dirlistref) eq 'ARRAY') {
11638: foreach my $dir_line (sort
11639: {
11640: my ($afile)=split('&',$a,2);
11641: my ($bfile)=split('&',$b,2);
11642: return (lc($afile) cmp lc($bfile));
11643: } (@{$dirlistref})) {
11644: my ($item,$dom,undef,$testdir,undef,undef,undef,undef,$size,undef,$mtime,undef,undef,undef,$obs,undef) =
11645: split(/\&/,$dir_line,16);
11646: $item =~ s/\s+$//;
11647: next if (($item =~ /^\.\.?$/) || ($obs));
11648: if ($dirptr&$testdir) {
11649: my $newpath;
11650: if ($relpath) {
11651: $newpath = "$relpath/$item";
11652: } else {
11653: $relpath = '/';
11654: $newpath = $item;
11655: }
11656: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
11657: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
11658: } elsif ($savefile) {
11659: if ($context eq 'priv') {
11660: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
11661: $filehashref->{$relpath}{$item} = 1;
11662: }
11663: } else {
11664: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/)) {
11665: $filehashref->{$relpath}{$item} = 1;
11666: }
11667: }
11668: }
11669: }
11670: }
11671: }
11672: return;
11673: }
11674:
11675: # -------------------------------------------------------- Value of a Condition
11676:
11677: # gets the value of a specific preevaluated condition
11678: # stored in the string $env{user.state.<cid>}
11679: # or looks up a condition reference in the bighash and if if hasn't
11680: # already been evaluated recurses into docondval to get the value of
11681: # the condition, then memoizing it to
11682: # $env{user.state.<cid>.<condition>}
11683: sub directcondval {
11684: my $number=shift;
11685: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
11686: &Apache::lonuserstate::evalstate();
11687: }
11688: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
11689: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
11690: } elsif ($number =~ /^_/) {
11691: my $sub_condition;
11692: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11693: &GDBM_READER(),0640)) {
11694: $sub_condition=$bighash{'conditions'.$number};
11695: untie(%bighash);
11696: }
11697: my $value = &docondval($sub_condition);
11698: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
11699: return $value;
11700: }
11701: if ($env{'user.state.'.$env{'request.course.id'}}) {
11702: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
11703: } else {
11704: return 2;
11705: }
11706: }
11707:
11708: # get the collection of conditions for this resource
11709: sub condval {
11710: my $condidx=shift;
11711: my $allpathcond='';
11712: foreach my $cond (split(/\|/,$condidx)) {
11713: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
11714: $allpathcond.=
11715: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
11716: }
11717: }
11718: $allpathcond=~s/\|$//;
11719: return &docondval($allpathcond);
11720: }
11721:
11722: #evaluates an expression of conditions
11723: sub docondval {
11724: my ($allpathcond) = @_;
11725: my $result=0;
11726: if ($env{'request.course.id'}
11727: && defined($allpathcond)) {
11728: my $operand='|';
11729: my @stack;
11730: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
11731: if ($chunk eq '(') {
11732: push @stack,($operand,$result);
11733: } elsif ($chunk eq ')') {
11734: my $before=pop @stack;
11735: if (pop @stack eq '&') {
11736: $result=$result>$before?$before:$result;
11737: } else {
11738: $result=$result>$before?$result:$before;
11739: }
11740: } elsif (($chunk eq '&') || ($chunk eq '|')) {
11741: $operand=$chunk;
11742: } else {
11743: my $new=directcondval($chunk);
11744: if ($operand eq '&') {
11745: $result=$result>$new?$new:$result;
11746: } else {
11747: $result=$result>$new?$result:$new;
11748: }
11749: }
11750: }
11751: }
11752: return $result;
11753: }
11754:
11755: # ---------------------------------------------------- Devalidate courseresdata
11756:
11757: sub devalidatecourseresdata {
11758: my ($coursenum,$coursedomain)=@_;
11759: my $hashid=$coursenum.':'.$coursedomain;
11760: &devalidate_cache_new('courseres',$hashid);
11761: }
11762:
11763:
11764: # --------------------------------------------------- Course Resourcedata Query
11765: #
11766: # Parameters:
11767: # $coursenum - Number of the course.
11768: # $coursedomain - Domain at which the course was created.
11769: # Returns:
11770: # A hash of the course parameters along (I think) with timestamps
11771: # and version info.
11772:
11773: sub get_courseresdata {
11774: my ($coursenum,$coursedomain)=@_;
11775: my $coursehom=&homeserver($coursenum,$coursedomain);
11776: my $hashid=$coursenum.':'.$coursedomain;
11777: my ($result,$cached)=&is_cached_new('courseres',$hashid);
11778: my %dumpreply;
11779: unless (defined($cached)) {
11780: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
11781: $result=\%dumpreply;
11782: my ($tmp) = keys(%dumpreply);
11783: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
11784: &do_cache_new('courseres',$hashid,$result,600);
11785: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
11786: return $tmp;
11787: } elsif ($tmp =~ /^(error)/) {
11788: $result=undef;
11789: &do_cache_new('courseres',$hashid,$result,600);
11790: }
11791: }
11792: return $result;
11793: }
11794:
11795: sub devalidateuserresdata {
11796: my ($uname,$udom)=@_;
11797: my $hashid="$udom:$uname";
11798: &devalidate_cache_new('userres',$hashid);
11799: }
11800:
11801: sub get_userresdata {
11802: my ($uname,$udom)=@_;
11803: #most student don\'t have any data set, check if there is some data
11804: if (&EXT_cache_status($udom,$uname)) { return undef; }
11805:
11806: my $hashid="$udom:$uname";
11807: my ($result,$cached)=&is_cached_new('userres',$hashid);
11808: if (!defined($cached)) {
11809: my %resourcedata=&dump('resourcedata',$udom,$uname);
11810: $result=\%resourcedata;
11811: &do_cache_new('userres',$hashid,$result,600);
11812: }
11813: my ($tmp)=keys(%$result);
11814: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
11815: return $result;
11816: }
11817: #error 2 occurs when the .db doesn't exist
11818: if ($tmp!~/error: 2 /) {
11819: if ((!defined($cached)) || ($tmp ne 'con_lost')) {
11820: &logthis("<font color=\"blue\">WARNING:".
11821: " Trying to get resource data for ".
11822: $uname." at ".$udom.": ".
11823: $tmp."</font>");
11824: }
11825: } elsif ($tmp=~/error: 2 /) {
11826: #&EXT_cache_set($udom,$uname);
11827: &do_cache_new('userres',$hashid,undef,600);
11828: undef($tmp); # not really an error so don't send it back
11829: }
11830: return $tmp;
11831: }
11832: #----------------------------------------------- resdata - return resource data
11833: # Purpose:
11834: # Return resource data for either users or for a course.
11835: # Parameters:
11836: # $name - Course/user name.
11837: # $domain - Name of the domain the user/course is registered on.
11838: # $type - Type of thing $name is (must be 'course' or 'user')
11839: # $mapp - decluttered URL of enclosing map
11840: # $recursed - Ref to scalar -- set to 1, if nested maps have been recursed.
11841: # $recurseup - Ref to array of map URLs, starting with map containing
11842: # $mapp up through hierarchy of nested maps to top level map.
11843: # $courseid - CourseID (first part of param identifier).
11844: # $modifier - Middle part of param identifier.
11845: # $what - Last part of param identifier.
11846: # @which - Array of names of resources desired.
11847: # Returns:
11848: # The value of the first reasource in @which that is found in the
11849: # resource hash.
11850: # Exceptional Conditions:
11851: # If the $type passed in is not valid (not the string 'course' or
11852: # 'user', an undefined reference is returned.
11853: # If none of the resources are found, an undef is returned
11854: sub resdata {
11855: my ($name,$domain,$type,$mapp,$recursed,$recurseup,$courseid,
11856: $modifier,$what,@which)=@_;
11857: my $result;
11858: if ($type eq 'course') {
11859: $result=&get_courseresdata($name,$domain);
11860: } elsif ($type eq 'user') {
11861: $result=&get_userresdata($name,$domain);
11862: }
11863: if (!ref($result)) { return $result; }
11864: foreach my $item (@which) {
11865: if ($item->[1] eq 'course') {
11866: if ((ref($recurseup) eq 'ARRAY') && (ref($recursed) eq 'SCALAR')) {
11867: unless ($$recursed) {
11868: @{$recurseup} = &get_map_hierarchy($mapp,$courseid);
11869: $$recursed = 1;
11870: }
11871: foreach my $item (@${recurseup}) {
11872: my $norecursechk=$courseid.$modifier.$item.'___(all).'.$what;
11873: last if (defined($result->{$norecursechk}));
11874: my $recursechk=$courseid.$modifier.$item.'___(rec).'.$what;
11875: if (defined($result->{$recursechk})) { return [$result->{$recursechk},'map']; }
11876: }
11877: }
11878: }
11879: if (defined($result->{$item->[0]})) {
11880: return [$result->{$item->[0]},$item->[1]];
11881: }
11882: }
11883: return undef;
11884: }
11885:
11886: sub get_domain_lti {
11887: my ($cdom,$context) = @_;
11888: my ($name,%lti);
11889: if ($context eq 'consumer') {
11890: $name = 'ltitools';
11891: } elsif ($context eq 'provider') {
11892: $name = 'lti';
11893: } else {
11894: return %lti;
11895: }
11896: my ($result,$cached)=&is_cached_new($name,$cdom);
11897: if (defined($cached)) {
11898: if (ref($result) eq 'HASH') {
11899: %lti = %{$result};
11900: }
11901: } else {
11902: my %domconfig = &get_dom('configuration',[$name],$cdom);
11903: if (ref($domconfig{$name}) eq 'HASH') {
11904: %lti = %{$domconfig{$name}};
11905: my %encdomconfig = &get_dom('encconfig',[$name],$cdom);
11906: if (ref($encdomconfig{$name}) eq 'HASH') {
11907: foreach my $id (keys(%lti)) {
11908: if (ref($encdomconfig{$name}{$id}) eq 'HASH') {
11909: foreach my $item ('key','secret') {
11910: $lti{$id}{$item} = $encdomconfig{$name}{$id}{$item};
11911: }
11912: }
11913: }
11914: }
11915: }
11916: my $cachetime = 24*60*60;
11917: &do_cache_new($name,$cdom,\%lti,$cachetime);
11918: }
11919: return %lti;
11920: }
11921:
11922: sub get_numsuppfiles {
11923: my ($cnum,$cdom,$ignorecache)=@_;
11924: my $hashid=$cnum.':'.$cdom;
11925: my ($suppcount,$cached);
11926: unless ($ignorecache) {
11927: ($suppcount,$cached) = &is_cached_new('suppcount',$hashid);
11928: }
11929: unless (defined($cached)) {
11930: my $chome=&homeserver($cnum,$cdom);
11931: unless ($chome eq 'no_host') {
11932: ($suppcount,my $supptools,my $errors) = (0,0,0);
11933: my $suppmap = 'supplemental.sequence';
11934: ($suppcount,$supptools,$errors) =
11935: &Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,
11936: $supptools,$errors);
11937: }
11938: &do_cache_new('suppcount',$hashid,$suppcount,600);
11939: }
11940: return $suppcount;
11941: }
11942:
11943: #
11944: # EXT resource caching routines
11945: #
11946:
11947: {
11948: # Cache (5 seconds) of map hierarchy for speedup of navmaps display
11949: #
11950: # The course for which we cache
11951: my $cachedmapkey='';
11952: # The cached recursive maps for this course
11953: my %cachedmaps=();
11954: # When this was last done
11955: my $cachedmaptime='';
11956:
11957: sub clear_EXT_cache_status {
11958: &delenv('cache.EXT.');
11959: }
11960:
11961: sub EXT_cache_status {
11962: my ($target_domain,$target_user) = @_;
11963: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
11964: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
11965: # We know already the user has no data
11966: return 1;
11967: } else {
11968: return 0;
11969: }
11970: }
11971:
11972: sub EXT_cache_set {
11973: my ($target_domain,$target_user) = @_;
11974: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
11975: #&appenv({$cachename => time});
11976: }
11977:
11978: # --------------------------------------------------------- Value of a Variable
11979: sub EXT {
11980:
11981: my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid)=@_;
11982: unless ($varname) { return ''; }
11983: #get real user name/domain, courseid and symb
11984: my $courseid;
11985: my $publicuser;
11986: if ($symbparm) {
11987: $symbparm=&get_symb_from_alias($symbparm);
11988: }
11989: if (!($uname && $udom)) {
11990: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
11991: if (!$symbparm) { $symbparm=$cursymb; }
11992: } else {
11993: $courseid=$env{'request.course.id'};
11994: }
11995: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
11996: my $rest;
11997: if (defined($therest[0])) {
11998: $rest=join('.',@therest);
11999: } else {
12000: $rest='';
12001: }
12002:
12003: my $qualifierrest=$qualifier;
12004: if ($rest) { $qualifierrest.='.'.$rest; }
12005: my $spacequalifierrest=$space;
12006: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
12007: if ($realm eq 'user') {
12008: # --------------------------------------------------------------- user.resource
12009: if ($space eq 'resource') {
12010: if ( (defined($Apache::lonhomework::parsing_a_problem)
12011: || defined($Apache::lonhomework::parsing_a_task))
12012: &&
12013: ($symbparm eq &symbread()) ) {
12014: # if we are in the middle of processing the resource the
12015: # get the value we are planning on committing
12016: if (defined($Apache::lonhomework::results{$qualifierrest})) {
12017: return $Apache::lonhomework::results{$qualifierrest};
12018: } else {
12019: return $Apache::lonhomework::history{$qualifierrest};
12020: }
12021: } else {
12022: my %restored;
12023: if ($publicuser || $env{'request.state'} eq 'construct') {
12024: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
12025: } else {
12026: %restored=&restore($symbparm,$courseid,$udom,$uname);
12027: }
12028: return $restored{$qualifierrest};
12029: }
12030: # ----------------------------------------------------------------- user.access
12031: } elsif ($space eq 'access') {
12032: # FIXME - not supporting calls for a specific user
12033: return &allowed($qualifier,$rest);
12034: # ------------------------------------------ user.preferences, user.environment
12035: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
12036: if (($uname eq $env{'user.name'}) &&
12037: ($udom eq $env{'user.domain'})) {
12038: return $env{join('.',('environment',$qualifierrest))};
12039: } else {
12040: my %returnhash;
12041: if (!$publicuser) {
12042: %returnhash=&userenvironment($udom,$uname,
12043: $qualifierrest);
12044: }
12045: return $returnhash{$qualifierrest};
12046: }
12047: # ----------------------------------------------------------------- user.course
12048: } elsif ($space eq 'course') {
12049: # FIXME - not supporting calls for a specific user
12050: return $env{join('.',('request.course',$qualifier))};
12051: # ------------------------------------------------------------------- user.role
12052: } elsif ($space eq 'role') {
12053: # FIXME - not supporting calls for a specific user
12054: my ($role,$where)=split(/\./,$env{'request.role'});
12055: if ($qualifier eq 'value') {
12056: return $role;
12057: } elsif ($qualifier eq 'extent') {
12058: return $where;
12059: }
12060: # ----------------------------------------------------------------- user.domain
12061: } elsif ($space eq 'domain') {
12062: return $udom;
12063: # ------------------------------------------------------------------- user.name
12064: } elsif ($space eq 'name') {
12065: return $uname;
12066: # ---------------------------------------------------- Any other user namespace
12067: } else {
12068: my %reply;
12069: if (!$publicuser) {
12070: %reply=&get($space,[$qualifierrest],$udom,$uname);
12071: }
12072: return $reply{$qualifierrest};
12073: }
12074: } elsif ($realm eq 'query') {
12075: # ---------------------------------------------- pull stuff out of query string
12076: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
12077: [$spacequalifierrest]);
12078: return $env{'form.'.$spacequalifierrest};
12079: } elsif ($realm eq 'request') {
12080: # ------------------------------------------------------------- request.browser
12081: if ($space eq 'browser') {
12082: return $env{'browser.'.$qualifier};
12083: # ------------------------------------------------------------ request.filename
12084: } else {
12085: return $env{'request.'.$spacequalifierrest};
12086: }
12087: } elsif ($realm eq 'course') {
12088: # ---------------------------------------------------------- course.description
12089: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
12090: } elsif ($realm eq 'resource') {
12091:
12092: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
12093: if (!$symbparm) { $symbparm=&symbread(); }
12094: }
12095:
12096: if ($qualifier eq '') {
12097: if ($space eq 'title') {
12098: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
12099: return &gettitle($symbparm);
12100: }
12101:
12102: if ($space eq 'map') {
12103: my ($map) = &decode_symb($symbparm);
12104: return &symbread($map);
12105: }
12106: if ($space eq 'maptitle') {
12107: my ($map) = &decode_symb($symbparm);
12108: return &gettitle($map);
12109: }
12110: if ($space eq 'filename') {
12111: if ($symbparm) {
12112: return &clutter((&decode_symb($symbparm))[2]);
12113: }
12114: return &hreflocation('',$env{'request.filename'});
12115: }
12116:
12117: if ((defined($courseid)) && ($courseid eq $env{'request.course.id'}) && $symbparm) {
12118: if ($space eq 'visibleparts') {
12119: my $navmap = Apache::lonnavmaps::navmap->new();
12120: my $item;
12121: if (ref($navmap)) {
12122: my $res = $navmap->getBySymb($symbparm);
12123: my $parts = $res->parts();
12124: if (ref($parts) eq 'ARRAY') {
12125: $item = join(',',@{$parts});
12126: }
12127: undef($navmap);
12128: }
12129: return $item;
12130: }
12131: }
12132: }
12133:
12134: my ($section, $group, @groups, @recurseup, $recursed);
12135: my ($courselevelm,$courseleveli,$courselevel,$mapp);
12136: if (($courseid eq '') && ($cid)) {
12137: $courseid = $cid;
12138: }
12139: if (($symbparm && $courseid) &&
12140: (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid))) {
12141:
12142: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
12143:
12144: # ----------------------------------------------------- Cascading lookup scheme
12145: my $symbp=$symbparm;
12146: $mapp=&deversion((&decode_symb($symbp))[0]);
12147: my $symbparm=$symbp.'.'.$spacequalifierrest;
12148: my $recurseparm=$mapp.'___(rec).'.$spacequalifierrest;
12149: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
12150: if (($env{'user.name'} eq $uname) &&
12151: ($env{'user.domain'} eq $udom)) {
12152: $section=$env{'request.course.sec'};
12153: @groups = split(/:/,$env{'request.course.groups'});
12154: @groups=&sort_course_groups($courseid,@groups);
12155: } else {
12156: if (! defined($usection)) {
12157: $section=&getsection($udom,$uname,$courseid);
12158: } else {
12159: $section = $usection;
12160: }
12161: @groups = &get_users_groups($udom,$uname,$courseid);
12162: }
12163:
12164: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
12165: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
12166: my $secleveli=$courseid.'.['.$section.'].'.$recurseparm;
12167: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
12168:
12169: $courselevel=$courseid.'.'.$spacequalifierrest;
12170: my $courselevelr=$courseid.'.'.$symbparm;
12171: $courseleveli=$courseid.'.'.$recurseparm;
12172: $courselevelm=$courseid.'.'.$mapparm;
12173:
12174: # ----------------------------------------------------------- first, check user
12175:
12176: my $userreply=&resdata($uname,$udom,'user',$mapp,\$recursed,
12177: \@recurseup,$courseid,'.',$spacequalifierrest,
12178: ([$courselevelr,'resource'],
12179: [$courselevelm,'map' ],
12180: [$courseleveli,'map' ],
12181: [$courselevel, 'course' ]));
12182: if (defined($userreply)) { return &get_reply($userreply); }
12183:
12184: # ------------------------------------------------ second, check some of course
12185: my $coursereply;
12186: if (@groups > 0) {
12187: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
12188: $recurseparm,$mapparm,$spacequalifierrest,
12189: $mapp,\$recursed,\@recurseup);
12190: if (defined($coursereply)) { return &get_reply($coursereply); }
12191: }
12192:
12193: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
12194: $env{'course.'.$courseid.'.domain'},
12195: 'course',$mapp,\$recursed,\@recurseup,
12196: $courseid,'.['.$section.'].',$spacequalifierrest,
12197: ([$seclevelr, 'resource'],
12198: [$seclevelm, 'map' ],
12199: [$secleveli, 'map' ],
12200: [$seclevel, 'course' ],
12201: [$courselevelr,'resource']));
12202: if (defined($coursereply)) { return &get_reply($coursereply); }
12203:
12204: # ------------------------------------------------------ third, check map parms
12205: my %parmhash=();
12206: my $thisparm='';
12207: if (tie(%parmhash,'GDBM_File',
12208: $env{'request.course.fn'}.'_parms.db',
12209: &GDBM_READER(),0640)) {
12210: $thisparm=$parmhash{$symbparm};
12211: untie(%parmhash);
12212: }
12213: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
12214: }
12215: # ------------------------------------------ fourth, look in resource metadata
12216:
12217: my $what = $spacequalifierrest;
12218: $what=~s/\./\_/;
12219: my $filename;
12220: if (!$symbparm) { $symbparm=&symbread(); }
12221: if ($symbparm) {
12222: $filename=(&decode_symb($symbparm))[2];
12223: } else {
12224: $filename=$env{'request.filename'};
12225: }
12226: my $toolsymb;
12227: if (($filename =~ /ext\.tool$/) && ($what ne '0_gradable')) {
12228: $toolsymb = $symbparm;
12229: }
12230: my $metadata=&metadata($filename,$what,$toolsymb);
12231: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
12232: $metadata=&metadata($filename,'parameter_'.$what,$toolsymb);
12233: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
12234:
12235: # ----------------------------------------------- fifth, look in rest of course
12236: if ($symbparm && defined($courseid) &&
12237: $courseid eq $env{'request.course.id'}) {
12238: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
12239: $env{'course.'.$courseid.'.domain'},
12240: 'course',$mapp,\$recursed,\@recurseup,
12241: $courseid,'.',$spacequalifierrest,
12242: ([$courselevelm,'map' ],
12243: [$courseleveli,'map' ],
12244: [$courselevel, 'course']));
12245: if (defined($coursereply)) { return &get_reply($coursereply); }
12246: }
12247: # ------------------------------------------------------------------ Cascade up
12248: unless ($space eq '0') {
12249: my @parts=split(/_/,$space);
12250: my $id=pop(@parts);
12251: my $part=join('_',@parts);
12252: if ($part eq '') { $part='0'; }
12253: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
12254: $symbparm,$udom,$uname,$section,1);
12255: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
12256: }
12257: if ($recurse) { return undef; }
12258: my $pack_def=&packages_tab_default($filename,$varname,$toolsymb);
12259: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
12260: # ---------------------------------------------------- Any other user namespace
12261: } elsif ($realm eq 'environment') {
12262: # ----------------------------------------------------------------- environment
12263: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
12264: return $env{'environment.'.$spacequalifierrest};
12265: } else {
12266: if ($uname eq 'anonymous' && $udom eq '') {
12267: return '';
12268: }
12269: my %returnhash=&userenvironment($udom,$uname,
12270: $spacequalifierrest);
12271: return $returnhash{$spacequalifierrest};
12272: }
12273: } elsif ($realm eq 'system') {
12274: # ----------------------------------------------------------------- system.time
12275: if ($space eq 'time') {
12276: return time;
12277: }
12278: } elsif ($realm eq 'server') {
12279: # ----------------------------------------------------------------- system.time
12280: if ($space eq 'name') {
12281: return $ENV{'SERVER_NAME'};
12282: }
12283: } elsif ($realm eq 'client') {
12284: if ($space eq 'remote_addr') {
12285: return $ENV{'REMOTE_ADDR'};
12286: }
12287: }
12288: return '';
12289: }
12290:
12291: sub get_reply {
12292: my ($reply_value) = @_;
12293: if (ref($reply_value) eq 'ARRAY') {
12294: if (wantarray) {
12295: return @$reply_value;
12296: }
12297: return $reply_value->[0];
12298: } else {
12299: return $reply_value;
12300: }
12301: }
12302:
12303: sub check_group_parms {
12304: my ($courseid,$groups,$symbparm,$recurseparm,$mapparm,$what,$mapp,
12305: $recursed,$recurseupref) = @_;
12306: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$recurseparm,'map'],
12307: [$what,'course']);
12308: my $coursereply;
12309: foreach my $group (@{$groups}) {
12310: my @groupitems = ();
12311: foreach my $level (@levels) {
12312: my $item = $courseid.'.['.$group.'].'.$level->[0];
12313: push(@groupitems,[$item,$level->[1]]);
12314: }
12315: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
12316: $env{'course.'.$courseid.'.domain'},
12317: 'course',$mapp,$recursed,$recurseupref,
12318: $courseid,'.['.$group.'].',$what,
12319: @groupitems);
12320: last if (defined($coursereply));
12321: }
12322: return $coursereply;
12323: }
12324:
12325: sub get_map_hierarchy {
12326: my ($mapname,$courseid) = @_;
12327: my @recurseup = ();
12328: if ($mapname) {
12329: if (($cachedmapkey eq $courseid) &&
12330: (abs($cachedmaptime-time)<5)) {
12331: if (ref($cachedmaps{$mapname}) eq 'ARRAY') {
12332: return @{$cachedmaps{$mapname}};
12333: }
12334: }
12335: my $navmap = Apache::lonnavmaps::navmap->new();
12336: if (ref($navmap)) {
12337: @recurseup = $navmap->recurseup_maps($mapname);
12338: undef($navmap);
12339: $cachedmaps{$mapname} = \@recurseup;
12340: $cachedmaptime=time;
12341: $cachedmapkey=$courseid;
12342: }
12343: }
12344: return @recurseup;
12345: }
12346:
12347: }
12348:
12349: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
12350: my ($courseid,@groups) = @_;
12351: @groups = sort(@groups);
12352: return @groups;
12353: }
12354:
12355: sub packages_tab_default {
12356: my ($uri,$varname,$toolsymb)=@_;
12357: my (undef,$part,$name)=split(/\./,$varname);
12358:
12359: my (@extension,@specifics,$do_default);
12360: foreach my $package (split(/,/,&metadata($uri,'packages',$toolsymb))) {
12361: my ($pack_type,$pack_part)=split(/_/,$package,2);
12362: if ($pack_type eq 'default') {
12363: $do_default=1;
12364: } elsif ($pack_type eq 'extension') {
12365: push(@extension,[$package,$pack_type,$pack_part]);
12366: } elsif ($pack_part eq $part || $pack_type eq 'part') {
12367: # only look at packages defaults for packages that this id is
12368: push(@specifics,[$package,$pack_type,$pack_part]);
12369: }
12370: }
12371: # first look for a package that matches the requested part id
12372: foreach my $package (@specifics) {
12373: my (undef,$pack_type,$pack_part)=@{$package};
12374: next if ($pack_part ne $part);
12375: if (defined($packagetab{"$pack_type&$name&default"})) {
12376: return $packagetab{"$pack_type&$name&default"};
12377: }
12378: }
12379: # look for any possible matching non extension_ package
12380: foreach my $package (@specifics) {
12381: my (undef,$pack_type,$pack_part)=@{$package};
12382: if (defined($packagetab{"$pack_type&$name&default"})) {
12383: return $packagetab{"$pack_type&$name&default"};
12384: }
12385: if ($pack_type eq 'part') { $pack_part='0'; }
12386: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
12387: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
12388: }
12389: }
12390: # look for any posible extension_ match
12391: foreach my $package (@extension) {
12392: my ($package,$pack_type)=@{$package};
12393: if (defined($packagetab{"$pack_type&$name&default"})) {
12394: return $packagetab{"$pack_type&$name&default"};
12395: }
12396: if (defined($packagetab{$package."&$name&default"})) {
12397: return $packagetab{$package."&$name&default"};
12398: }
12399: }
12400: # look for a global default setting
12401: if ($do_default && defined($packagetab{"default&$name&default"})) {
12402: return $packagetab{"default&$name&default"};
12403: }
12404: return undef;
12405: }
12406:
12407: sub add_prefix_and_part {
12408: my ($prefix,$part)=@_;
12409: my $keyroot;
12410: if (defined($prefix) && $prefix !~ /^__/) {
12411: # prefix that has a part already
12412: $keyroot=$prefix;
12413: } elsif (defined($prefix)) {
12414: # prefix that is missing a part
12415: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
12416: } else {
12417: # no prefix at all
12418: if (defined($part)) { $keyroot='_'.$part; }
12419: }
12420: return $keyroot;
12421: }
12422:
12423: # ---------------------------------------------------------------- Get metadata
12424:
12425: my %metaentry;
12426: my %importedpartids;
12427: my %importedrespids;
12428: sub metadata {
12429: my ($uri,$what,$toolsymb,$liburi,$prefix,$depthcount)=@_;
12430: $uri=&declutter($uri);
12431: # if it is a non metadata possible uri return quickly
12432: if (($uri eq '') ||
12433: (($uri =~ m|^/*adm/|) &&
12434: ($uri !~ m|^adm/includes|) && ($uri !~ m{/(smppg|bulletinboard|ext\.tool)$})) ||
12435: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
12436: return undef;
12437: }
12438: if (($uri =~ /^priv/ || $uri=~m{^home/httpd/html/priv})
12439: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
12440: return undef;
12441: }
12442: my $filename=$uri;
12443: $uri=~s/\.meta$//;
12444: #
12445: # Is the metadata already cached?
12446: # Look at timestamp of caching
12447: # Everything is cached by the main uri, libraries are never directly cached
12448: #
12449: if (!defined($liburi)) {
12450: my ($result,$cached)=&is_cached_new('meta',$uri);
12451: if (defined($cached)) { return $result->{':'.$what}; }
12452: }
12453:
12454: #
12455: # If the uri is for an external tool the file from
12456: # which metadata should be retrieved depends on whether
12457: # the tool had been configured to be gradable (set in the Course
12458: # Editor or Resource Editor).
12459: #
12460: # If a valid symb has been included as the third arg in the call
12461: # to &metadata() that can be used to retrieve the value of
12462: # parameter_0_gradable set for the resource, and included in the
12463: # uploaded map containing the tool. The value is retrieved via
12464: # &EXT(), if a valid symb is available. Otherwise the value of
12465: # gradable in the exttool_$marker.db file for the tool instance
12466: # is retrieved via &get().
12467: #
12468: # When lonuserstate::traceroute() calls lonnet::EXT() for
12469: # hiddenresource and encrypturl (during course initialization)
12470: # the map-level parameter for resource.0.gradable included in the
12471: # uploaded map containing the tool will not yet have been stored
12472: # in the user_course_parms.db file for the user's session, so in
12473: # this case fall back to retrieving gradable status from the
12474: # exttool_$marker.db file.
12475: #
12476: # In order to avoid an infinite loop, &metadata() will return
12477: # before a call to &EXT(), if the uri is for an external tool
12478: # and the $what for which metadata is being requested is
12479: # parameter_0_gradable or 0_gradable.
12480: #
12481:
12482: if ($uri =~ /ext\.tool$/) {
12483: if (($what eq 'parameter_0_gradable') || ($what eq '0_gradable')) {
12484: return;
12485: } else {
12486: my ($checked,$use_passback);
12487: if ($toolsymb ne '') {
12488: (undef,undef,my $tooluri) = &decode_symb($toolsymb);
12489: if (($tooluri eq $uri) && (&EXT('resource.0.gradable',$toolsymb))) {
12490: $checked = 1;
12491: if (&EXT('resource.0.gradable',$toolsymb) =~ /^yes$/i) {
12492: $use_passback = 1;
12493: }
12494: }
12495: }
12496: unless ($checked) {
12497: my ($ignore,$cdom,$cnum,$marker) = split(m{/},$uri);
12498: $marker=~s/\D//g;
12499: if ($marker) {
12500: my %toolsettings=&get('exttool_'.$marker,['gradable'],$cdom,$cnum);
12501: $use_passback = $toolsettings{'gradable'};
12502: }
12503: }
12504: if ($use_passback) {
12505: $filename = '/home/httpd/html/res/lib/templates/LTIpassback.tool';
12506: } else {
12507: $filename = '/home/httpd/html/res/lib/templates/LTIstandard.tool';
12508: }
12509: }
12510: }
12511:
12512: {
12513: # Imported parts would go here
12514: my @origfiletagids=();
12515: my $importedparts=0;
12516:
12517: # Imported responseids would go here
12518: my $importedresponses=0;
12519: #
12520: # Is this a recursive call for a library?
12521: #
12522: # if (! exists($metacache{$uri})) {
12523: # $metacache{$uri}={};
12524: # }
12525: my $cachetime = 60*60;
12526: if ($liburi) {
12527: $liburi=&declutter($liburi);
12528: $filename=$liburi;
12529: } else {
12530: &devalidate_cache_new('meta',$uri);
12531: undef(%metaentry);
12532: }
12533: my %metathesekeys=();
12534: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
12535: my $metastring;
12536: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
12537: my $which = &hreflocation('','/'.($liburi || $uri));
12538: $metastring =
12539: &Apache::lonnet::ssi_body($which,
12540: ('grade_target' => 'meta'));
12541: $cachetime = 1; # only want this cached in the child not long term
12542: } elsif (($uri !~ m -^(editupload)/-) &&
12543: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
12544: my $file=&filelocation('',&clutter($filename));
12545: #push(@{$metaentry{$uri.'.file'}},$file);
12546: $metastring=&getfile($file);
12547: }
12548: my $parser=HTML::LCParser->new(\$metastring);
12549: my $token;
12550: undef %metathesekeys;
12551: while ($token=$parser->get_token) {
12552: if ($token->[0] eq 'S') {
12553: if (defined($token->[2]->{'package'})) {
12554: #
12555: # This is a package - get package info
12556: #
12557: my $package=$token->[2]->{'package'};
12558: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
12559: if (defined($token->[2]->{'id'})) {
12560: $keyroot.='_'.$token->[2]->{'id'};
12561: }
12562: if ($metaentry{':packages'}) {
12563: $metaentry{':packages'}.=','.$package.$keyroot;
12564: } else {
12565: $metaentry{':packages'}=$package.$keyroot;
12566: }
12567: foreach my $pack_entry (keys(%packagetab)) {
12568: my $part=$keyroot;
12569: $part=~s/^\_//;
12570: if ($pack_entry=~/^\Q$package\E\&/ ||
12571: $pack_entry=~/^\Q$package\E_0\&/) {
12572: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
12573: # ignore package.tab specified default values
12574: # here &package_tab_default() will fetch those
12575: if ($subp eq 'default') { next; }
12576: my $value=$packagetab{$pack_entry};
12577: my $unikey;
12578: if ($pack =~ /_0$/) {
12579: $unikey='parameter_0_'.$name;
12580: $part=0;
12581: } else {
12582: $unikey='parameter'.$keyroot.'_'.$name;
12583: }
12584: if ($subp eq 'display') {
12585: $value.=' [Part: '.$part.']';
12586: }
12587: $metaentry{':'.$unikey.'.part'}=$part;
12588: $metathesekeys{$unikey}=1;
12589: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
12590: $metaentry{':'.$unikey.'.'.$subp}=$value;
12591: }
12592: if (defined($metaentry{':'.$unikey.'.default'})) {
12593: $metaentry{':'.$unikey}=
12594: $metaentry{':'.$unikey.'.default'};
12595: }
12596: }
12597: }
12598: } else {
12599: #
12600: # This is not a package - some other kind of start tag
12601: #
12602: my $entry=$token->[1];
12603: my $unikey='';
12604:
12605: if ($entry eq 'import') {
12606: #
12607: # Importing a library here
12608: #
12609: my $location=$parser->get_text('/import');
12610: my $dir=$filename;
12611: $dir=~s|[^/]*$||;
12612: $location=&filelocation($dir,$location);
12613:
12614: my $importid=$token->[2]->{'id'};
12615: my $importmode=$token->[2]->{'importmode'};
12616: #
12617: # Check metadata for imported file to
12618: # see if it contained response items
12619: #
12620: my ($origfile,@libfilekeys);
12621: my %currmetaentry = %metaentry;
12622: @libfilekeys = split(/,/,&metadata($location,'keys',undef,undef,undef,
12623: $depthcount+1));
12624: if (grep(/^responseorder$/,@libfilekeys)) {
12625: my $libresponseorder = &metadata($location,'responseorder',undef,undef,
12626: undef,$depthcount+1);
12627: if ($libresponseorder ne '') {
12628: if ($#origfiletagids<0) {
12629: undef(%importedrespids);
12630: undef(%importedpartids);
12631: }
12632: my @respids = split(/\s*,\s*/,$libresponseorder);
12633: if (@respids) {
12634: $importedrespids{$importid} = join(',',map { $importid.'_'.$_ } @respids);
12635: }
12636: if ($importedrespids{$importid} ne '') {
12637: $importedresponses = 1;
12638: # We need to get the original file and the imported file to get the response order correct
12639: # Load and inspect original file
12640: if ($#origfiletagids<0) {
12641: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
12642: $origfile=&getfile($origfilelocation);
12643: @origfiletagids=($origfile=~/<((?:\w+)response|import|part)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12644: }
12645: }
12646: }
12647: }
12648: # Do not overwrite contents of %metaentry hash for resource itself with
12649: # hash populated for imported library file
12650: %metaentry = %currmetaentry;
12651: undef(%currmetaentry);
12652: if ($importmode eq 'part') {
12653: # Import as part(s)
12654: $importedparts=1;
12655: # We need to get the original file and the imported file to get the part order correct
12656: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
12657: # Load and inspect original file if we didn't do that already
12658: if ($#origfiletagids<0) {
12659: undef(%importedrespids);
12660: undef(%importedpartids);
12661: if ($origfile eq '') {
12662: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
12663: $origfile=&getfile($origfilelocation);
12664: @origfiletagids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12665: }
12666: }
12667: my @impfilepartids;
12668: # If <partorder> tag is included in metadata for the imported file
12669: # get the parts in the imported file from that.
12670: if (grep(/^partorder$/,@libfilekeys)) {
12671: %currmetaentry = %metaentry;
12672: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
12673: $depthcount+1);
12674: %metaentry = %currmetaentry;
12675: undef(%currmetaentry);
12676: if ($libpartorder ne '') {
12677: @impfilepartids=split(/\s*,\s*/,$libpartorder);
12678: }
12679: } else {
12680: # If no <partorder> tag available, load and inspect imported file
12681: my $impfile=&getfile($location);
12682: @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12683: }
12684: if ($#impfilepartids>=0) {
12685: # This problem had parts
12686: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
12687: } else {
12688: # Importing by turning a single problem into a problem part
12689: # It gets the import-tags ID as part-ID
12690: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
12691: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
12692: }
12693: } else {
12694: # Import as problem or as normal import
12695: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
12696: unless ($importmode eq 'problem') {
12697: # Normal import
12698: if (defined($token->[2]->{'id'})) {
12699: $unikey.='_'.$token->[2]->{'id'};
12700: }
12701: }
12702: # Check metadata for imported file to
12703: # see if it contained parts
12704: if (grep(/^partorder$/,@libfilekeys)) {
12705: %currmetaentry = %metaentry;
12706: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
12707: $depthcount+1);
12708: %metaentry = %currmetaentry;
12709: undef(%currmetaentry);
12710: if ($libpartorder ne '') {
12711: $importedparts = 1;
12712: $importedpartids{$token->[2]->{'id'}}=$libpartorder;
12713: }
12714: }
12715: }
12716: if ($depthcount<20) {
12717: my $metadata =
12718: &metadata($uri,'keys',$toolsymb,$location,$unikey,
12719: $depthcount+1);
12720: foreach my $meta (split(',',$metadata)) {
12721: $metaentry{':'.$meta}=$metaentry{':'.$meta};
12722: $metathesekeys{$meta}=1;
12723: }
12724: }
12725: } else {
12726: #
12727: # Not importing, some other kind of non-package, non-library start tag
12728: #
12729: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
12730: if (defined($token->[2]->{'id'})) {
12731: $unikey.='_'.$token->[2]->{'id'};
12732: }
12733: if (defined($token->[2]->{'name'})) {
12734: $unikey.='_'.$token->[2]->{'name'};
12735: }
12736: $metathesekeys{$unikey}=1;
12737: foreach my $param (@{$token->[3]}) {
12738: $metaentry{':'.$unikey.'.'.$param} =
12739: $token->[2]->{$param};
12740: }
12741: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
12742: my $default=$metaentry{':'.$unikey.'.default'};
12743: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
12744: # only ws inside the tag, and not in default, so use default
12745: # as value
12746: $metaentry{':'.$unikey}=$default;
12747: } elsif ( $internaltext =~ /\S/ ) {
12748: # something interesting inside the tag
12749: $metaentry{':'.$unikey}=$internaltext;
12750: } else {
12751: # no interesting values, don't set a default
12752: }
12753: # end of not-a-package not-a-library import
12754: }
12755: # end of not-a-package start tag
12756: }
12757: # the next is the end of "start tag"
12758: }
12759: }
12760: my ($extension) = ($uri =~ /\.(\w+)$/);
12761: $extension = lc($extension);
12762: if ($extension eq 'htm') { $extension='html'; }
12763:
12764: foreach my $key (keys(%packagetab)) {
12765: #no specific packages #how's our extension
12766: if ($key!~/^extension_\Q$extension\E&/) { next; }
12767: &metadata_create_package_def($uri,$key,'extension_'.$extension,
12768: \%metathesekeys);
12769: }
12770:
12771: if (!exists($metaentry{':packages'})
12772: || $packagetab{"import_defaults&extension_$extension"}) {
12773: foreach my $key (keys(%packagetab)) {
12774: #no specific packages well let's get default then
12775: if ($key!~/^default&/) { next; }
12776: &metadata_create_package_def($uri,$key,'default',
12777: \%metathesekeys);
12778: }
12779: }
12780: # are there custom rights to evaluate
12781: if ($metaentry{':copyright'} eq 'custom') {
12782:
12783: #
12784: # Importing a rights file here
12785: #
12786: unless ($depthcount) {
12787: my $location=$metaentry{':customdistributionfile'};
12788: my $dir=$filename;
12789: $dir=~s|[^/]*$||;
12790: $location=&filelocation($dir,$location);
12791: my $rights_metadata =
12792: &metadata($uri,'keys',$toolsymb,$location,'_rights',
12793: $depthcount+1);
12794: foreach my $rights (split(',',$rights_metadata)) {
12795: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
12796: $metathesekeys{$rights}=1;
12797: }
12798: }
12799: }
12800: # uniqifiy package listing
12801: my %seen;
12802: my @uniq_packages =
12803: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
12804: $metaentry{':packages'} = join(',',@uniq_packages);
12805:
12806: if (($importedresponses) || ($importedparts)) {
12807: if ($importedparts) {
12808: # We had imported parts and need to rebuild partorder
12809: $metaentry{':partorder'}='';
12810: $metathesekeys{'partorder'}=1;
12811: }
12812: if ($importedresponses) {
12813: # We had imported responses and need to rebuil responseorder
12814: $metaentry{':responseorder'}='';
12815: $metathesekeys{'responseorder'}=1;
12816: }
12817: for (my $index=0;$index<$#origfiletagids;$index+=2) {
12818: my $origid = $origfiletagids[$index+1];
12819: if ($origfiletagids[$index] eq 'part') {
12820: # Original part, part of the problem
12821: if ($importedparts) {
12822: $metaentry{':partorder'}.=','.$origid;
12823: }
12824: } elsif ($origfiletagids[$index] eq 'import') {
12825: if ($importedparts) {
12826: # We have imported parts at this position
12827: if ($importedpartids{$origid} ne '') {
12828: $metaentry{':partorder'}.=','.$importedpartids{$origid};
12829: }
12830: }
12831: if ($importedresponses) {
12832: # We have imported responses at this position
12833: if ($importedrespids{$origid} ne '') {
12834: $metaentry{':responseorder'}.=','.$importedrespids{$origid};
12835: }
12836: }
12837: } else {
12838: # Original response item, part of the problem
12839: if ($importedresponses) {
12840: $metaentry{':responseorder'}.=','.$origid;
12841: }
12842: }
12843: }
12844: if ($importedparts) {
12845: $metaentry{':partorder'}=~s/^\,//;
12846: }
12847: if ($importedresponses) {
12848: $metaentry{':responseorder'}=~s/^\,//;
12849: }
12850: }
12851: $metaentry{':keys'} = join(',',keys(%metathesekeys));
12852: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
12853: $metaentry{':allpossiblekeys'}=join(',',keys(%metathesekeys));
12854: unless ($liburi) {
12855: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
12856: }
12857: # this is the end of "was not already recently cached
12858: }
12859: return $metaentry{':'.$what};
12860: }
12861:
12862: sub metadata_create_package_def {
12863: my ($uri,$key,$package,$metathesekeys)=@_;
12864: my ($pack,$name,$subp)=split(/\&/,$key);
12865: if ($subp eq 'default') { next; }
12866:
12867: if (defined($metaentry{':packages'})) {
12868: $metaentry{':packages'}.=','.$package;
12869: } else {
12870: $metaentry{':packages'}=$package;
12871: }
12872: my $value=$packagetab{$key};
12873: my $unikey;
12874: $unikey='parameter_0_'.$name;
12875: $metaentry{':'.$unikey.'.part'}=0;
12876: $$metathesekeys{$unikey}=1;
12877: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
12878: $metaentry{':'.$unikey.'.'.$subp}=$value;
12879: }
12880: if (defined($metaentry{':'.$unikey.'.default'})) {
12881: $metaentry{':'.$unikey}=
12882: $metaentry{':'.$unikey.'.default'};
12883: }
12884: }
12885:
12886: sub metadata_generate_part0 {
12887: my ($metadata,$metacache,$uri) = @_;
12888: my %allnames;
12889: foreach my $metakey (keys(%$metadata)) {
12890: if ($metakey=~/^parameter\_(.*)/) {
12891: my $part=$$metacache{':'.$metakey.'.part'};
12892: my $name=$$metacache{':'.$metakey.'.name'};
12893: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
12894: $allnames{$name}=$part;
12895: }
12896: }
12897: }
12898: foreach my $name (keys(%allnames)) {
12899: $$metadata{"parameter_0_$name"}=1;
12900: my $key=":parameter_0_$name";
12901: $$metacache{"$key.part"}='0';
12902: $$metacache{"$key.name"}=$name;
12903: $$metacache{"$key.type"}=$$metacache{':parameter_'.
12904: $allnames{$name}.'_'.$name.
12905: '.type'};
12906: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
12907: '.display'};
12908: my $expr='[Part: '.$allnames{$name}.']';
12909: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
12910: $$metacache{"$key.display"}=$olddis;
12911: }
12912: }
12913:
12914: # ------------------------------------------------------ Devalidate title cache
12915:
12916: sub devalidate_title_cache {
12917: my ($url)=@_;
12918: if (!$env{'request.course.id'}) { return; }
12919: my $symb=&symbread($url);
12920: if (!$symb) { return; }
12921: my $key=$env{'request.course.id'}."\0".$symb;
12922: &devalidate_cache_new('title',$key);
12923: }
12924:
12925: # ------------------------------------------------- Get the title of a course
12926:
12927: sub current_course_title {
12928: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
12929: }
12930: # ------------------------------------------------- Get the title of a resource
12931:
12932: sub gettitle {
12933: my $urlsymb=shift;
12934: my $symb=&symbread($urlsymb);
12935: if ($symb) {
12936: my $key=$env{'request.course.id'}."\0".$symb;
12937: my ($result,$cached)=&is_cached_new('title',$key);
12938: if (defined($cached)) {
12939: return $result;
12940: }
12941: my ($map,$resid,$url)=&decode_symb($symb);
12942: my $title='';
12943: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
12944: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
12945: } else {
12946: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12947: &GDBM_READER(),0640)) {
12948: my $mapid=$bighash{'map_pc_'.&clutter($map)};
12949: $title=$bighash{'title_'.$mapid.'.'.$resid};
12950: untie(%bighash);
12951: }
12952: }
12953: $title=~s/\&colon\;/\:/gs;
12954: if ($title) {
12955: # Remember both $symb and $title for dynamic metadata
12956: $accesshash{$symb.'___crstitle'}=$title;
12957: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
12958: # Cache this title and then return it
12959: return &do_cache_new('title',$key,$title,600);
12960: }
12961: $urlsymb=$url;
12962: }
12963: my $title=&metadata($urlsymb,'title');
12964: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
12965: return $title;
12966: }
12967:
12968: sub get_slot {
12969: my ($which,$cnum,$cdom)=@_;
12970: if (!$cnum || !$cdom) {
12971: (undef,my $courseid)=&whichuser();
12972: $cdom=$env{'course.'.$courseid.'.domain'};
12973: $cnum=$env{'course.'.$courseid.'.num'};
12974: }
12975: my $key=join("\0",'slots',$cdom,$cnum,$which);
12976: my %slotinfo;
12977: if (exists($remembered{$key})) {
12978: $slotinfo{$which} = $remembered{$key};
12979: } else {
12980: %slotinfo=&get('slots',[$which],$cdom,$cnum);
12981: &Apache::lonhomework::showhash(%slotinfo);
12982: my ($tmp)=keys(%slotinfo);
12983: if ($tmp=~/^error:/) { return (); }
12984: $remembered{$key} = $slotinfo{$which};
12985: }
12986: if (ref($slotinfo{$which}) eq 'HASH') {
12987: return %{$slotinfo{$which}};
12988: }
12989: return $slotinfo{$which};
12990: }
12991:
12992: sub get_reservable_slots {
12993: my ($cnum,$cdom,$uname,$udom) = @_;
12994: my $now = time;
12995: my $reservable_info;
12996: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
12997: if (exists($remembered{$key})) {
12998: $reservable_info = $remembered{$key};
12999: } else {
13000: my %resv;
13001: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
13002: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
13003: $reservable_info = \%resv;
13004: $remembered{$key} = $reservable_info;
13005: }
13006: return $reservable_info;
13007: }
13008:
13009: sub get_course_slots {
13010: my ($cnum,$cdom) = @_;
13011: my $hashid=$cnum.':'.$cdom;
13012: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
13013: if (defined($cached)) {
13014: if (ref($result) eq 'HASH') {
13015: return %{$result};
13016: }
13017: } else {
13018: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
13019: my ($tmp) = keys(%slots);
13020: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
13021: &do_cache_new('allslots',$hashid,\%slots,600);
13022: return %slots;
13023: }
13024: }
13025: return;
13026: }
13027:
13028: sub devalidate_slots_cache {
13029: my ($cnum,$cdom)=@_;
13030: my $hashid=$cnum.':'.$cdom;
13031: &devalidate_cache_new('allslots',$hashid);
13032: }
13033:
13034: sub get_coursechange {
13035: my ($cdom,$cnum) = @_;
13036: if ($cdom eq '' || $cnum eq '') {
13037: return unless ($env{'request.course.id'});
13038: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
13039: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
13040: }
13041: my $hashid=$cdom.'_'.$cnum;
13042: my ($change,$cached)=&is_cached_new('crschange',$hashid);
13043: if ((defined($cached)) && ($change ne '')) {
13044: return $change;
13045: } else {
13046: my %crshash;
13047: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
13048: if ($crshash{'internal.contentchange'} eq '') {
13049: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
13050: if ($change eq '') {
13051: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
13052: $change = $crshash{'internal.created'};
13053: }
13054: } else {
13055: $change = $crshash{'internal.contentchange'};
13056: }
13057: my $cachetime = 600;
13058: &do_cache_new('crschange',$hashid,$change,$cachetime);
13059: }
13060: return $change;
13061: }
13062:
13063: sub devalidate_coursechange_cache {
13064: my ($cnum,$cdom)=@_;
13065: my $hashid=$cnum.':'.$cdom;
13066: &devalidate_cache_new('crschange',$hashid);
13067: }
13068:
13069: # ------------------------------------------------- Update symbolic store links
13070:
13071: sub symblist {
13072: my ($mapname,%newhash)=@_;
13073: $mapname=&deversion(&declutter($mapname));
13074: my %hash;
13075: if (($env{'request.course.fn'}) && (%newhash)) {
13076: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
13077: &GDBM_WRCREAT(),0640)) {
13078: foreach my $url (keys(%newhash)) {
13079: next if ($url eq 'last_known'
13080: && $env{'form.no_update_last_known'});
13081: $hash{declutter($url)}=&encode_symb($mapname,
13082: $newhash{$url}->[1],
13083: $newhash{$url}->[0]);
13084: }
13085: if (untie(%hash)) {
13086: return 'ok';
13087: }
13088: }
13089: }
13090: return 'error';
13091: }
13092:
13093: # --------------------------------------------------------------- Verify a symb
13094:
13095: sub symbverify {
13096: my ($symb,$thisurl,$encstate)=@_;
13097: my $thisfn=$thisurl;
13098: $thisfn=&declutter($thisfn);
13099: # direct jump to resource in page or to a sequence - will construct own symbs
13100: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
13101: # check URL part
13102: my ($map,$resid,$url)=&decode_symb($symb);
13103:
13104: unless ($url eq $thisfn) { return 0; }
13105:
13106: $symb=&symbclean($symb);
13107: $thisurl=&deversion($thisurl);
13108: $thisfn=&deversion($thisfn);
13109:
13110: my %bighash;
13111: my $okay=0;
13112:
13113: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
13114: &GDBM_READER(),0640)) {
13115: my $noclutter;
13116: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
13117: $thisurl =~ s/\?.+$//;
13118: if ($map =~ m{^uploaded/.+\.page$}) {
13119: $thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
13120: $thisurl =~ s{^\Qhttp://https://\E}{https://};
13121: $noclutter = 1;
13122: }
13123: }
13124: my $ids;
13125: if ($noclutter) {
13126: $ids=$bighash{'ids_'.$thisurl};
13127: } else {
13128: $ids=$bighash{'ids_'.&clutter($thisurl)};
13129: }
13130: unless ($ids) {
13131: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
13132: $ids=$bighash{$idkey};
13133: }
13134: if ($ids) {
13135: # ------------------------------------------------------------------- Has ID(s)
13136: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
13137: $symb =~ s/\?.+$//;
13138: }
13139: foreach my $id (split(/\,/,$ids)) {
13140: my ($mapid,$resid)=split(/\./,$id);
13141: if (
13142: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
13143: eq $symb) {
13144: if (ref($encstate)) {
13145: $$encstate = $bighash{'encrypted_'.$id};
13146: }
13147: if (($env{'request.role.adv'}) ||
13148: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
13149: ($thisurl eq '/adm/navmaps')) {
13150: $okay=1;
13151: last;
13152: }
13153: }
13154: }
13155: }
13156: untie(%bighash);
13157: }
13158: return $okay;
13159: }
13160:
13161: # --------------------------------------------------------------- Clean-up symb
13162:
13163: sub symbclean {
13164: my $symb=shift;
13165: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
13166: # remove version from map
13167: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
13168:
13169: # remove version from URL
13170: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
13171:
13172: # remove wrapper
13173:
13174: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
13175: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
13176: return $symb;
13177: }
13178:
13179: # ---------------------------------------------- Split symb to find map and url
13180:
13181: sub encode_symb {
13182: my ($map,$resid,$url)=@_;
13183: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
13184: }
13185:
13186: sub decode_symb {
13187: my $symb=shift;
13188: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
13189: my ($map,$resid,$url)=split(/___/,$symb);
13190: return (&fixversion($map),$resid,&fixversion($url));
13191: }
13192:
13193: sub fixversion {
13194: my $fn=shift;
13195: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
13196: my %bighash;
13197: my $uri=&clutter($fn);
13198: my $key=$env{'request.course.id'}.'_'.$uri;
13199: # is this cached?
13200: my ($result,$cached)=&is_cached_new('courseresversion',$key);
13201: if (defined($cached)) { return $result; }
13202: # unfortunately not cached, or expired
13203: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
13204: &GDBM_READER(),0640)) {
13205: if ($bighash{'version_'.$uri}) {
13206: my $version=$bighash{'version_'.$uri};
13207: unless (($version eq 'mostrecent') ||
13208: ($version==&getversion($uri))) {
13209: $uri=~s/\.(\w+)$/\.$version\.$1/;
13210: }
13211: }
13212: untie %bighash;
13213: }
13214: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
13215: }
13216:
13217: sub deversion {
13218: my $url=shift;
13219: $url=~s/\.\d+\.(\w+)$/\.$1/;
13220: return $url;
13221: }
13222:
13223: # ------------------------------------------------------ Return symb list entry
13224:
13225: sub symbread {
13226: my ($thisfn,$donotrecurse,$ignorecachednull,$checkforblock,$possibles)=@_;
13227: my $cache_str='request.symbread.cached.'.$thisfn;
13228: if (defined($env{$cache_str})) {
13229: if ($ignorecachednull) {
13230: return $env{$cache_str} unless ($env{$cache_str} eq '');
13231: } else {
13232: return $env{$cache_str};
13233: }
13234: }
13235: # no filename provided? try from environment
13236: unless ($thisfn) {
13237: if ($env{'request.symb'}) {
13238: return $env{$cache_str}=&symbclean($env{'request.symb'});
13239: }
13240: $thisfn=$env{'request.filename'};
13241: }
13242: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
13243: # is that filename actually a symb? Verify, clean, and return
13244: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
13245: if (&symbverify($thisfn,$1)) {
13246: return $env{$cache_str}=&symbclean($thisfn);
13247: }
13248: }
13249: $thisfn=declutter($thisfn);
13250: my %hash;
13251: my %bighash;
13252: my $syval='';
13253: if (($env{'request.course.fn'}) && ($thisfn)) {
13254: my $targetfn = $thisfn;
13255: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
13256: $targetfn = 'adm/wrapper/'.$thisfn;
13257: }
13258: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
13259: $targetfn=$1;
13260: }
13261: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
13262: &GDBM_READER(),0640)) {
13263: $syval=$hash{$targetfn};
13264: untie(%hash);
13265: }
13266: # ---------------------------------------------------------- There was an entry
13267: if ($syval) {
13268: #unless ($syval=~/\_\d+$/) {
13269: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
13270: #&appenv({'request.ambiguous' => $thisfn});
13271: #return $env{$cache_str}='';
13272: #}
13273: #$syval.=$1;
13274: #}
13275: } else {
13276: # ------------------------------------------------------- Was not in symb table
13277: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
13278: &GDBM_READER(),0640)) {
13279: # ---------------------------------------------- Get ID(s) for current resource
13280: my $ids=$bighash{'ids_'.&clutter($thisfn)};
13281: unless ($ids) {
13282: $ids=$bighash{'ids_/'.$thisfn};
13283: }
13284: unless ($ids) {
13285: # alias?
13286: $ids=$bighash{'mapalias_'.$thisfn};
13287: }
13288: if ($ids) {
13289: # ------------------------------------------------------------------- Has ID(s)
13290: my @possibilities=split(/\,/,$ids);
13291: if ($#possibilities==0) {
13292: # ----------------------------------------------- There is only one possibility
13293: my ($mapid,$resid)=split(/\./,$ids);
13294: $syval=&encode_symb($bighash{'map_id_'.$mapid},
13295: $resid,$thisfn);
13296: if (ref($possibles) eq 'HASH') {
13297: $possibles->{$syval} = 1;
13298: }
13299: if ($checkforblock) {
13300: my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids});
13301: if (@blockers) {
13302: $syval = '';
13303: return;
13304: }
13305: }
13306: } elsif ((!$donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
13307: # ------------------------------------------ There is more than one possibility
13308: my $realpossible=0;
13309: foreach my $id (@possibilities) {
13310: my $file=$bighash{'src_'.$id};
13311: my $canaccess;
13312: if (($donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
13313: $canaccess = 1;
13314: } else {
13315: $canaccess = &allowed('bre',$file);
13316: }
13317: if ($canaccess) {
13318: my ($mapid,$resid)=split(/\./,$id);
13319: if ($bighash{'map_type_'.$mapid} ne 'page') {
13320: my $poss_syval=&encode_symb($bighash{'map_id_'.$mapid},
13321: $resid,$thisfn);
13322: if (ref($possibles) eq 'HASH') {
13323: $possibles->{$syval} = 1;
13324: }
13325: if ($checkforblock) {
13326: my @blockers = &has_comm_blocking('bre',$poss_syval,$file);
13327: unless (@blockers > 0) {
13328: $syval = $poss_syval;
13329: $realpossible++;
13330: }
13331: } else {
13332: $syval = $poss_syval;
13333: $realpossible++;
13334: }
13335: }
13336: }
13337: }
13338: if ($realpossible!=1) { $syval=''; }
13339: } else {
13340: $syval='';
13341: }
13342: }
13343: untie(%bighash);
13344: }
13345: }
13346: if ($syval) {
13347: return $env{$cache_str}=$syval;
13348: }
13349: }
13350: &appenv({'request.ambiguous' => $thisfn});
13351: return $env{$cache_str}='';
13352: }
13353:
13354: # ---------------------------------------------------------- Return random seed
13355:
13356: sub numval {
13357: my $txt=shift;
13358: $txt=~tr/A-J/0-9/;
13359: $txt=~tr/a-j/0-9/;
13360: $txt=~tr/K-T/0-9/;
13361: $txt=~tr/k-t/0-9/;
13362: $txt=~tr/U-Z/0-5/;
13363: $txt=~tr/u-z/0-5/;
13364: $txt=~s/\D//g;
13365: if ($_64bit) { if ($txt > 2**32) { return -1; } }
13366: return int($txt);
13367: }
13368:
13369: sub numval2 {
13370: my $txt=shift;
13371: $txt=~tr/A-J/0-9/;
13372: $txt=~tr/a-j/0-9/;
13373: $txt=~tr/K-T/0-9/;
13374: $txt=~tr/k-t/0-9/;
13375: $txt=~tr/U-Z/0-5/;
13376: $txt=~tr/u-z/0-5/;
13377: $txt=~s/\D//g;
13378: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
13379: my $total;
13380: foreach my $val (@txts) { $total+=$val; }
13381: if ($_64bit) { if ($total > 2**32) { return -1; } }
13382: return int($total);
13383: }
13384:
13385: sub numval3 {
13386: use integer;
13387: my $txt=shift;
13388: $txt=~tr/A-J/0-9/;
13389: $txt=~tr/a-j/0-9/;
13390: $txt=~tr/K-T/0-9/;
13391: $txt=~tr/k-t/0-9/;
13392: $txt=~tr/U-Z/0-5/;
13393: $txt=~tr/u-z/0-5/;
13394: $txt=~s/\D//g;
13395: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
13396: my $total;
13397: foreach my $val (@txts) { $total+=$val; }
13398: if ($_64bit) { $total=(($total<<32)>>32); }
13399: return $total;
13400: }
13401:
13402: sub digest {
13403: my ($data)=@_;
13404: my $digest=&Digest::MD5::md5($data);
13405: my ($a,$b,$c,$d)=unpack("iiii",$digest);
13406: my ($e,$f);
13407: {
13408: use integer;
13409: $e=($a+$b);
13410: $f=($c+$d);
13411: if ($_64bit) {
13412: $e=(($e<<32)>>32);
13413: $f=(($f<<32)>>32);
13414: }
13415: }
13416: if (wantarray) {
13417: return ($e,$f);
13418: } else {
13419: my $g;
13420: {
13421: use integer;
13422: $g=($e+$f);
13423: if ($_64bit) {
13424: $g=(($g<<32)>>32);
13425: }
13426: }
13427: return $g;
13428: }
13429: }
13430:
13431: sub latest_rnd_algorithm_id {
13432: return '64bit5';
13433: }
13434:
13435: sub get_rand_alg {
13436: my ($courseid)=@_;
13437: if (!$courseid) { $courseid=(&whichuser())[1]; }
13438: if ($courseid) {
13439: return $env{"course.$courseid.rndseed"};
13440: }
13441: return &latest_rnd_algorithm_id();
13442: }
13443:
13444: sub validCODE {
13445: my ($CODE)=@_;
13446: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
13447: return 0;
13448: }
13449:
13450: sub getCODE {
13451: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
13452: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
13453: defined($Apache::lonhomework::parsing_a_task) ) &&
13454: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
13455: return $Apache::lonhomework::history{'resource.CODE'};
13456: }
13457: return undef;
13458: }
13459: #
13460: # Determines the random seed for a specific context:
13461: #
13462: # parameters:
13463: # symb - in course context the symb for the seed.
13464: # course_id - The course id of the form domain_coursenum.
13465: # domain - Domain for the user.
13466: # course - Course for the user.
13467: # cenv - environment of the course.
13468: #
13469: # NOTE:
13470: # All parameters are picked out of the environment if missing
13471: # or not defined.
13472: # If a symb cannot be determined the current time is used instead.
13473: #
13474: # For a given well defined symb, courside, domain, username,
13475: # and course environment, the seed is reproducible.
13476: #
13477: sub rndseed {
13478: my ($symb,$courseid,$domain,$username, $cenv)=@_;
13479: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
13480: if (!defined($symb)) {
13481: unless ($symb=$wsymb) { return time; }
13482: }
13483: if (!defined $courseid) {
13484: $courseid=$wcourseid;
13485: }
13486: if (!defined $domain) { $domain=$wdomain; }
13487: if (!defined $username) { $username=$wusername }
13488:
13489: my $which;
13490: if (defined($cenv->{'rndseed'})) {
13491: $which = $cenv->{'rndseed'};
13492: } else {
13493: $which =&get_rand_alg($courseid);
13494: }
13495: if (defined(&getCODE())) {
13496:
13497: if ($which eq '64bit5') {
13498: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
13499: } elsif ($which eq '64bit4') {
13500: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
13501: } else {
13502: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
13503: }
13504: } elsif ($which eq '64bit5') {
13505: return &rndseed_64bit5($symb,$courseid,$domain,$username);
13506: } elsif ($which eq '64bit4') {
13507: return &rndseed_64bit4($symb,$courseid,$domain,$username);
13508: } elsif ($which eq '64bit3') {
13509: return &rndseed_64bit3($symb,$courseid,$domain,$username);
13510: } elsif ($which eq '64bit2') {
13511: return &rndseed_64bit2($symb,$courseid,$domain,$username);
13512: } elsif ($which eq '64bit') {
13513: return &rndseed_64bit($symb,$courseid,$domain,$username);
13514: }
13515: return &rndseed_32bit($symb,$courseid,$domain,$username);
13516: }
13517:
13518: sub rndseed_32bit {
13519: my ($symb,$courseid,$domain,$username)=@_;
13520: {
13521: use integer;
13522: my $symbchck=unpack("%32C*",$symb) << 27;
13523: my $symbseed=numval($symb) << 22;
13524: my $namechck=unpack("%32C*",$username) << 17;
13525: my $nameseed=numval($username) << 12;
13526: my $domainseed=unpack("%32C*",$domain) << 7;
13527: my $courseseed=unpack("%32C*",$courseid);
13528: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
13529: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13530: #&logthis("rndseed :$num:$symb");
13531: if ($_64bit) { $num=(($num<<32)>>32); }
13532: return $num;
13533: }
13534: }
13535:
13536: sub rndseed_64bit {
13537: my ($symb,$courseid,$domain,$username)=@_;
13538: {
13539: use integer;
13540: my $symbchck=unpack("%32S*",$symb) << 21;
13541: my $symbseed=numval($symb) << 10;
13542: my $namechck=unpack("%32S*",$username);
13543:
13544: my $nameseed=numval($username) << 21;
13545: my $domainseed=unpack("%32S*",$domain) << 10;
13546: my $courseseed=unpack("%32S*",$courseid);
13547:
13548: my $num1=$symbchck+$symbseed+$namechck;
13549: my $num2=$nameseed+$domainseed+$courseseed;
13550: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13551: #&logthis("rndseed :$num:$symb");
13552: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13553: return "$num1,$num2";
13554: }
13555: }
13556:
13557: sub rndseed_64bit2 {
13558: my ($symb,$courseid,$domain,$username)=@_;
13559: {
13560: use integer;
13561: # strings need to be an even # of cahracters long, it it is odd the
13562: # last characters gets thrown away
13563: my $symbchck=unpack("%32S*",$symb.' ') << 21;
13564: my $symbseed=numval($symb) << 10;
13565: my $namechck=unpack("%32S*",$username.' ');
13566:
13567: my $nameseed=numval($username) << 21;
13568: my $domainseed=unpack("%32S*",$domain.' ') << 10;
13569: my $courseseed=unpack("%32S*",$courseid.' ');
13570:
13571: my $num1=$symbchck+$symbseed+$namechck;
13572: my $num2=$nameseed+$domainseed+$courseseed;
13573: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13574: #&logthis("rndseed :$num:$symb");
13575: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13576: return "$num1,$num2";
13577: }
13578: }
13579:
13580: sub rndseed_64bit3 {
13581: my ($symb,$courseid,$domain,$username)=@_;
13582: {
13583: use integer;
13584: # strings need to be an even # of cahracters long, it it is odd the
13585: # last characters gets thrown away
13586: my $symbchck=unpack("%32S*",$symb.' ') << 21;
13587: my $symbseed=numval2($symb) << 10;
13588: my $namechck=unpack("%32S*",$username.' ');
13589:
13590: my $nameseed=numval2($username) << 21;
13591: my $domainseed=unpack("%32S*",$domain.' ') << 10;
13592: my $courseseed=unpack("%32S*",$courseid.' ');
13593:
13594: my $num1=$symbchck+$symbseed+$namechck;
13595: my $num2=$nameseed+$domainseed+$courseseed;
13596: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13597: #&logthis("rndseed :$num1:$num2:$_64bit");
13598: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13599:
13600: return "$num1:$num2";
13601: }
13602: }
13603:
13604: sub rndseed_64bit4 {
13605: my ($symb,$courseid,$domain,$username)=@_;
13606: {
13607: use integer;
13608: # strings need to be an even # of cahracters long, it it is odd the
13609: # last characters gets thrown away
13610: my $symbchck=unpack("%32S*",$symb.' ') << 21;
13611: my $symbseed=numval3($symb) << 10;
13612: my $namechck=unpack("%32S*",$username.' ');
13613:
13614: my $nameseed=numval3($username) << 21;
13615: my $domainseed=unpack("%32S*",$domain.' ') << 10;
13616: my $courseseed=unpack("%32S*",$courseid.' ');
13617:
13618: my $num1=$symbchck+$symbseed+$namechck;
13619: my $num2=$nameseed+$domainseed+$courseseed;
13620: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13621: #&logthis("rndseed :$num1:$num2:$_64bit");
13622: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13623:
13624: return "$num1:$num2";
13625: }
13626: }
13627:
13628: sub rndseed_64bit5 {
13629: my ($symb,$courseid,$domain,$username)=@_;
13630: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
13631: return "$num1:$num2";
13632: }
13633:
13634: sub rndseed_CODE_64bit {
13635: my ($symb,$courseid,$domain,$username)=@_;
13636: {
13637: use integer;
13638: my $symbchck=unpack("%32S*",$symb.' ') << 16;
13639: my $symbseed=numval2($symb);
13640: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
13641: my $CODEseed=numval(&getCODE());
13642: my $courseseed=unpack("%32S*",$courseid.' ');
13643: my $num1=$symbseed+$CODEchck;
13644: my $num2=$CODEseed+$courseseed+$symbchck;
13645: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
13646: #&logthis("rndseed :$num1:$num2:$symb");
13647: if ($_64bit) { $num1=(($num1<<32)>>32); }
13648: if ($_64bit) { $num2=(($num2<<32)>>32); }
13649: return "$num1:$num2";
13650: }
13651: }
13652:
13653: sub rndseed_CODE_64bit4 {
13654: my ($symb,$courseid,$domain,$username)=@_;
13655: {
13656: use integer;
13657: my $symbchck=unpack("%32S*",$symb.' ') << 16;
13658: my $symbseed=numval3($symb);
13659: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
13660: my $CODEseed=numval3(&getCODE());
13661: my $courseseed=unpack("%32S*",$courseid.' ');
13662: my $num1=$symbseed+$CODEchck;
13663: my $num2=$CODEseed+$courseseed+$symbchck;
13664: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
13665: #&logthis("rndseed :$num1:$num2:$symb");
13666: if ($_64bit) { $num1=(($num1<<32)>>32); }
13667: if ($_64bit) { $num2=(($num2<<32)>>32); }
13668: return "$num1:$num2";
13669: }
13670: }
13671:
13672: sub rndseed_CODE_64bit5 {
13673: my ($symb,$courseid,$domain,$username)=@_;
13674: my $code = &getCODE();
13675: my ($num1,$num2)=&digest("$symb,$courseid,$code");
13676: return "$num1:$num2";
13677: }
13678:
13679: sub setup_random_from_rndseed {
13680: my ($rndseed)=@_;
13681: if ($rndseed =~/([,:])/) {
13682: my ($num1,$num2) = map { abs($_); } (split(/[,:]/,$rndseed));
13683: if ((!$num1) || (!$num2) || ($num1 > 2147483562) || ($num2 > 2147483398)) {
13684: &Math::Random::random_set_seed_from_phrase($rndseed);
13685: } else {
13686: &Math::Random::random_set_seed($num1,$num2);
13687: }
13688: } else {
13689: &Math::Random::random_set_seed_from_phrase($rndseed);
13690: }
13691: }
13692:
13693: sub latest_receipt_algorithm_id {
13694: return 'receipt3';
13695: }
13696:
13697: sub recunique {
13698: my $fucourseid=shift;
13699: my $unique;
13700: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
13701: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
13702: $unique=$env{"course.$fucourseid.internal.encseed"};
13703: } else {
13704: $unique=$perlvar{'lonReceipt'};
13705: }
13706: return unpack("%32C*",$unique);
13707: }
13708:
13709: sub recprefix {
13710: my $fucourseid=shift;
13711: my $prefix;
13712: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
13713: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
13714: $prefix=$env{"course.$fucourseid.internal.encpref"};
13715: } else {
13716: $prefix=$perlvar{'lonHostID'};
13717: }
13718: return unpack("%32C*",$prefix);
13719: }
13720:
13721: sub ireceipt {
13722: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
13723:
13724: my $return =&recprefix($fucourseid).'-';
13725:
13726: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
13727: $env{'request.state'} eq 'construct') {
13728: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
13729: return $return;
13730: }
13731:
13732: my $cuname=unpack("%32C*",$funame);
13733: my $cudom=unpack("%32C*",$fudom);
13734: my $cucourseid=unpack("%32C*",$fucourseid);
13735: my $cusymb=unpack("%32C*",$fusymb);
13736: my $cunique=&recunique($fucourseid);
13737: my $cpart=unpack("%32S*",$part);
13738: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
13739:
13740: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
13741:
13742: $return.= ($cunique%$cuname+
13743: $cunique%$cudom+
13744: $cusymb%$cuname+
13745: $cusymb%$cudom+
13746: $cucourseid%$cuname+
13747: $cucourseid%$cudom+
13748: $cpart%$cuname+
13749: $cpart%$cudom);
13750: } else {
13751: $return.= ($cunique%$cuname+
13752: $cunique%$cudom+
13753: $cusymb%$cuname+
13754: $cusymb%$cudom+
13755: $cucourseid%$cuname+
13756: $cucourseid%$cudom);
13757: }
13758: return $return;
13759: }
13760:
13761: sub receipt {
13762: my ($part)=@_;
13763: my ($symb,$courseid,$domain,$name) = &whichuser();
13764: return &ireceipt($name,$domain,$courseid,$symb,$part);
13765: }
13766:
13767: sub whichuser {
13768: my ($passedsymb)=@_;
13769: my ($symb,$courseid,$domain,$name,$publicuser);
13770: if (defined($env{'form.grade_symb'})) {
13771: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
13772: my $allowed=&allowed('vgr',$tmp_courseid);
13773: if (!$allowed &&
13774: exists($env{'request.course.sec'}) &&
13775: $env{'request.course.sec'} !~ /^\s*$/) {
13776: $allowed=&allowed('vgr',$tmp_courseid.
13777: '/'.$env{'request.course.sec'});
13778: }
13779: if ($allowed) {
13780: ($symb)=&get_env_multiple('form.grade_symb');
13781: $courseid=$tmp_courseid;
13782: ($domain)=&get_env_multiple('form.grade_domain');
13783: ($name)=&get_env_multiple('form.grade_username');
13784: return ($symb,$courseid,$domain,$name,$publicuser);
13785: }
13786: }
13787: if (!$passedsymb) {
13788: $symb=&symbread();
13789: } else {
13790: $symb=$passedsymb;
13791: }
13792: $courseid=$env{'request.course.id'};
13793: $domain=$env{'user.domain'};
13794: $name=$env{'user.name'};
13795: if ($name eq 'public' && $domain eq 'public') {
13796: if (!defined($env{'form.username'})) {
13797: $env{'form.username'}.=time.rand(10000000);
13798: }
13799: $name.=$env{'form.username'};
13800: }
13801: return ($symb,$courseid,$domain,$name,$publicuser);
13802:
13803: }
13804:
13805: # ------------------------------------------------------------ Serves up a file
13806: # returns either the contents of the file or
13807: # -1 if the file doesn't exist
13808: #
13809: # if the target is a file that was uploaded via DOCS,
13810: # a check will be made to see if a current copy exists on the local server,
13811: # if it does this will be served, otherwise a copy will be retrieved from
13812: # the home server for the course and stored in /home/httpd/html/userfiles on
13813: # the local server.
13814:
13815: sub getfile {
13816: my ($file) = @_;
13817: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
13818: &repcopy($file);
13819: return &readfile($file);
13820: }
13821:
13822: sub repcopy_userfile {
13823: my ($file)=@_;
13824: my $londocroot = $perlvar{'lonDocRoot'};
13825: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
13826: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
13827: my ($cdom,$cnum,$filename) =
13828: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
13829: my $uri="/uploaded/$cdom/$cnum/$filename";
13830: if (-e "$file") {
13831: # we already have a local copy, check it out
13832: my @fileinfo = stat($file);
13833: my $rtncode;
13834: my $info;
13835: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
13836: if ($lwpresp ne 'ok') {
13837: # there is no such file anymore, even though we had a local copy
13838: if ($rtncode eq '404') {
13839: unlink($file);
13840: }
13841: return -1;
13842: }
13843: if ($info < $fileinfo[9]) {
13844: # nice, the file we have is up-to-date, just say okay
13845: return 'ok';
13846: } else {
13847: # the file is outdated, get rid of it
13848: unlink($file);
13849: }
13850: }
13851: # one way or the other, at this point, we don't have the file
13852: # construct the correct path for the file
13853: my @parts = ($cdom,$cnum);
13854: if ($filename =~ m|^(.+)/[^/]+$|) {
13855: push @parts, split(/\//,$1);
13856: }
13857: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
13858: foreach my $part (@parts) {
13859: $path .= '/'.$part;
13860: if (!-e $path) {
13861: mkdir($path,0770);
13862: }
13863: }
13864: # now the path exists for sure
13865: # get a user agent
13866: my $transferfile=$file.'.in.transfer';
13867: # FIXME: this should flock
13868: if (-e $transferfile) { return 'ok'; }
13869: my $request;
13870: $uri=~s/^\///;
13871: my $homeserver = &homeserver($cnum,$cdom);
13872: my $hostname = &hostname($homeserver);
13873: my $protocol = $protocol{$homeserver};
13874: $protocol = 'http' if ($protocol ne 'https');
13875: $request=new HTTP::Request('GET',$protocol.'://'.$hostname.'/raw/'.$uri);
13876: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,$transferfile,\%perlvar,'',0,1);
13877: # did it work?
13878: if ($response->is_error()) {
13879: unlink($transferfile);
13880: &logthis("Userfile repcopy failed for $uri");
13881: return -1;
13882: }
13883: # worked, rename the transfer file
13884: rename($transferfile,$file);
13885: return 'ok';
13886: }
13887:
13888: sub tokenwrapper {
13889: my $uri=shift;
13890: $uri=~s|^https?\://([^/]+)||;
13891: $uri=~s|^/||;
13892: $env{'user.environment'}=~/\/([^\/]+)\.id/;
13893: my $token=$1;
13894: my (undef,$udom,$uname,$file)=split('/',$uri,4);
13895: if ($udom && $uname && $file) {
13896: $file=~s|(\?\.*)*$||;
13897: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
13898: my $homeserver = &homeserver($uname,$udom);
13899: my $hostname = &hostname($homeserver);
13900: my $protocol = $protocol{$homeserver};
13901: $protocol = 'http' if ($protocol ne 'https');
13902: return $protocol.'://'.$hostname.'/'.$uri.
13903: (($uri=~/\?/)?'&':'?').'token='.$token.
13904: '&tokenissued='.$perlvar{'lonHostID'};
13905: } else {
13906: return '/adm/notfound.html';
13907: }
13908: }
13909:
13910: # call with reqtype HEAD: get last modification time
13911: # call with reqtype GET: get the file contents
13912: # Do not call this with reqtype GET for large files! It loads everything into memory
13913: #
13914: sub getuploaded {
13915: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
13916: $uri=~s/^\///;
13917: my $homeserver = &homeserver($cnum,$cdom);
13918: my $hostname = &hostname($homeserver);
13919: my $protocol = $protocol{$homeserver};
13920: $protocol = 'http' if ($protocol ne 'https');
13921: $uri = $protocol.'://'.$hostname.'/raw/'.$uri;
13922: my $request=new HTTP::Request($reqtype,$uri);
13923: my $response=&LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,'',0,1);
13924: $$rtncode = $response->code;
13925: if (! $response->is_success()) {
13926: return 'failed';
13927: }
13928: if ($reqtype eq 'HEAD') {
13929: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
13930: } elsif ($reqtype eq 'GET') {
13931: $$info = $response->content;
13932: }
13933: return 'ok';
13934: }
13935:
13936: sub readfile {
13937: my $file = shift;
13938: if ( (! -e $file ) || ($file eq '') ) { return -1; };
13939: my $fh;
13940: open($fh,"<",$file);
13941: my $a='';
13942: while (my $line = <$fh>) { $a .= $line; }
13943: return $a;
13944: }
13945:
13946: sub filelocation {
13947: my ($dir,$file) = @_;
13948: my $location;
13949: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
13950:
13951: if ($file =~ m-^/adm/-) {
13952: $file=~s-^/adm/wrapper/-/-;
13953: $file=~s-^/adm/coursedocs/showdoc/-/-;
13954: }
13955:
13956: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
13957: $location = $file;
13958: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
13959: my ($udom,$uname,$filename)=
13960: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
13961: my $home=&homeserver($uname,$udom);
13962: my $is_me=0;
13963: my @ids=¤t_machine_ids();
13964: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
13965: if ($is_me) {
13966: $location=propath($udom,$uname).'/userfiles/'.$filename;
13967: } else {
13968: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
13969: $udom.'/'.$uname.'/'.$filename;
13970: }
13971: } elsif ($file =~ m-^/adm/-) {
13972: $location = $perlvar{'lonDocRoot'}.'/'.$file;
13973: } else {
13974: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
13975: $file=~s:^/(res|priv)/:/:;
13976: my $space=$1;
13977: if ( !( $file =~ m:^/:) ) {
13978: $location = $dir. '/'.$file;
13979: } else {
13980: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
13981: }
13982: }
13983: $location=~s://+:/:g; # remove duplicate /
13984: while ($location=~m{/\.\./}) {
13985: if ($location =~ m{/[^/]+/\.\./}) {
13986: $location=~ s{/[^/]+/\.\./}{/}g;
13987: } else {
13988: $location=~ s{/\.\./}{/}g;
13989: }
13990: } #remove dir/..
13991: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
13992: return $location;
13993: }
13994:
13995: sub hreflocation {
13996: my ($dir,$file)=@_;
13997: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
13998: $file=filelocation($dir,$file);
13999: } elsif ($file=~m-^/adm/-) {
14000: $file=~s-^/adm/wrapper/-/-;
14001: $file=~s-^/adm/coursedocs/showdoc/-/-;
14002: }
14003: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
14004: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
14005: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
14006: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
14007: {/uploaded/$1/$2/}x;
14008: }
14009: if ($file=~ m{^/userfiles/}) {
14010: $file =~ s{^/userfiles/}{/uploaded/};
14011: }
14012: return $file;
14013: }
14014:
14015:
14016:
14017:
14018:
14019: sub current_machine_domains {
14020: return &machine_domains(&hostname($perlvar{'lonHostID'}));
14021: }
14022:
14023: sub machine_domains {
14024: my ($hostname) = @_;
14025: my @domains;
14026: my %hostname = &all_hostnames();
14027: while( my($id, $name) = each(%hostname)) {
14028: # &logthis("-$id-$name-$hostname-");
14029: if ($hostname eq $name) {
14030: push(@domains,&host_domain($id));
14031: }
14032: }
14033: return @domains;
14034: }
14035:
14036: sub current_machine_ids {
14037: return &machine_ids(&hostname($perlvar{'lonHostID'}));
14038: }
14039:
14040: sub machine_ids {
14041: my ($hostname) = @_;
14042: $hostname ||= &hostname($perlvar{'lonHostID'});
14043: my @ids;
14044: my %name_to_host = &all_names();
14045: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
14046: return @{ $name_to_host{$hostname} };
14047: }
14048: return;
14049: }
14050:
14051: sub additional_machine_domains {
14052: my @domains;
14053: open(my $fh,"<","$perlvar{'lonTabDir'}/expected_domains.tab");
14054: while( my $line = <$fh>) {
14055: $line =~ s/\s//g;
14056: push(@domains,$line);
14057: }
14058: return @domains;
14059: }
14060:
14061: sub default_login_domain {
14062: my $domain = $perlvar{'lonDefDomain'};
14063: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
14064: foreach my $posdom (¤t_machine_domains(),
14065: &additional_machine_domains()) {
14066: if (lc($posdom) eq lc($testdomain)) {
14067: $domain=$posdom;
14068: last;
14069: }
14070: }
14071: return $domain;
14072: }
14073:
14074: sub shared_institution {
14075: my ($dom) = @_;
14076: my $same_intdom;
14077: my $hostintdom = &internet_dom($perlvar{'lonHostID'});
14078: if ($hostintdom ne '') {
14079: my %iphost = &get_iphost();
14080: my $primary_id = &domain($dom,'primary');
14081: my $primary_ip = &get_host_ip($primary_id);
14082: if (ref($iphost{$primary_ip}) eq 'ARRAY') {
14083: foreach my $id (@{$iphost{$primary_ip}}) {
14084: my $intdom = &internet_dom($id);
14085: if ($intdom eq $hostintdom) {
14086: $same_intdom = 1;
14087: last;
14088: }
14089: }
14090: }
14091: }
14092: return $same_intdom;
14093: }
14094:
14095: sub uses_sts {
14096: my ($ignore_cache) = @_;
14097: my $lonhost = $perlvar{'lonHostID'};
14098: my $hostname = &hostname($lonhost);
14099: my $sts_on;
14100: if ($protocol{$lonhost} eq 'https') {
14101: my $cachetime = 12*3600;
14102: if (!$ignore_cache) {
14103: ($sts_on,my $cached)=&is_cached_new('stspolicy',$lonhost);
14104: if (defined($cached)) {
14105: return $sts_on;
14106: }
14107: }
14108: my $url = $protocol{$lonhost}.'://'.$hostname.'/index.html';
14109: my $request=new HTTP::Request('HEAD',$url);
14110: my $response=&LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,'','','',1);
14111: if ($response->is_success) {
14112: my $has_sts = $response->header('Strict-Transport-Security');
14113: if ($has_sts eq '') {
14114: $sts_on = 0;
14115: } else {
14116: if ($has_sts =~ /\Qmax-age=\E(\d+)/) {
14117: my $maxage = $1;
14118: if ($maxage) {
14119: $sts_on = 1;
14120: } else {
14121: $sts_on = 0;
14122: }
14123: } else {
14124: $sts_on = 0;
14125: }
14126: }
14127: return &do_cache_new('stspolicy',$lonhost,$sts_on,$cachetime);
14128: }
14129: }
14130: return;
14131: }
14132:
14133: # ------------------------------------------------------------- Declutters URLs
14134:
14135: sub declutter {
14136: my $thisfn=shift;
14137: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
14138: unless ($thisfn=~m{^/home/httpd/html/priv/}) {
14139: $thisfn=~s{^/home/httpd/html}{};
14140: }
14141: $thisfn=~s/^\///;
14142: $thisfn=~s|^adm/wrapper/||;
14143: $thisfn=~s|^adm/coursedocs/showdoc/||;
14144: $thisfn=~s/^res\///;
14145: $thisfn=~s/^priv\///;
14146: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
14147: $thisfn=~s/\?.+$//;
14148: }
14149: return $thisfn;
14150: }
14151:
14152: # ------------------------------------------------------------- Clutter up URLs
14153:
14154: sub clutter {
14155: my $thisfn='/'.&declutter(shift);
14156: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
14157: || $thisfn =~ m{^/adm/(includes|pages)} ) {
14158: $thisfn='/res'.$thisfn;
14159: }
14160: if ($thisfn !~m|^/adm|) {
14161: if ($thisfn =~ m|^/ext/|) {
14162: $thisfn='/adm/wrapper'.$thisfn;
14163: } else {
14164: my ($ext) = ($thisfn =~ /\.(\w+)$/);
14165: my $embstyle=&Apache::loncommon::fileembstyle($ext);
14166: if ($embstyle eq 'ssi'
14167: || ($embstyle eq 'hdn')
14168: || ($embstyle eq 'rat')
14169: || ($embstyle eq 'prv')
14170: || ($embstyle eq 'ign')) {
14171: #do nothing with these
14172: } elsif (($embstyle eq 'img')
14173: || ($embstyle eq 'emb')
14174: || ($embstyle eq 'wrp')) {
14175: $thisfn='/adm/wrapper'.$thisfn;
14176: } elsif ($embstyle eq 'unk'
14177: && $thisfn!~/\.(sequence|page)$/) {
14178: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
14179: } else {
14180: # &logthis("Got a blank emb style");
14181: }
14182: }
14183: } elsif ($thisfn =~ m{^/adm/$match_domain/$match_courseid/\d+/ext\.tool$}) {
14184: $thisfn='/adm/wrapper'.$thisfn;
14185: }
14186: return $thisfn;
14187: }
14188:
14189: sub clutter_with_no_wrapper {
14190: my $uri = &clutter(shift);
14191: if ($uri =~ m-^/adm/-) {
14192: $uri =~ s-^/adm/wrapper/-/-;
14193: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
14194: }
14195: return $uri;
14196: }
14197:
14198: sub freeze_escape {
14199: my ($value)=@_;
14200: if (ref($value)) {
14201: $value=&nfreeze($value);
14202: return '__FROZEN__'.&escape($value);
14203: }
14204: return &escape($value);
14205: }
14206:
14207:
14208: sub thaw_unescape {
14209: my ($value)=@_;
14210: if ($value =~ /^__FROZEN__/) {
14211: substr($value,0,10,undef);
14212: $value=&unescape($value);
14213: return &thaw($value);
14214: }
14215: return &unescape($value);
14216: }
14217:
14218: sub correct_line_ends {
14219: my ($result)=@_;
14220: $$result =~s/\r\n/\n/mg;
14221: $$result =~s/\r/\n/mg;
14222: }
14223: # ================================================================ Main Program
14224:
14225: sub goodbye {
14226: &logthis("Starting Shut down");
14227: #not converted to using infrastruture and probably shouldn't be
14228: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
14229: #converted
14230: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
14231: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
14232: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
14233: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
14234: #1.1 only
14235: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
14236: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
14237: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
14238: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
14239: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
14240: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
14241: &logthis(sprintf("%-20s is %s",'hits',$hits));
14242: &flushcourselogs();
14243: &logthis("Shutting down");
14244: }
14245:
14246: sub get_dns {
14247: my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
14248: if (!$ignore_cache) {
14249: my ($content,$cached)=
14250: &Apache::lonnet::is_cached_new('dns',$url);
14251: if ($cached) {
14252: &$func($content,$hashref);
14253: return;
14254: }
14255: }
14256:
14257: my %alldns;
14258: if (open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab")) {
14259: foreach my $dns (<$config>) {
14260: next if ($dns !~ /^\^(\S*)/x);
14261: my $line = $1;
14262: my ($host,$protocol) = split(/:/,$line);
14263: if ($protocol ne 'https') {
14264: $protocol = 'http';
14265: }
14266: $alldns{$host} = $protocol;
14267: }
14268: close($config);
14269: }
14270: while (%alldns) {
14271: my ($dns) = sort { $b cmp $a } keys(%alldns);
14272: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
14273: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar,30,0);
14274: delete($alldns{$dns});
14275: next if ($response->is_error());
14276: if ($url eq '/adm/dns/loncapaCRL') {
14277: return &$func($response);
14278: } else {
14279: my @content = split("\n",$response->content);
14280: unless ($nocache) {
14281: &do_cache_new('dns',$url,\@content,30*24*60*60);
14282: }
14283: &$func(\@content,$hashref);
14284: return;
14285: }
14286: }
14287: my $which = (split('/',$url,4))[3];
14288: if ($which eq 'loncapaCRL') {
14289: my $diskfile = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
14290: if (-e $diskfile) {
14291: &logthis("unable to contact DNS, on disk file $diskfile not updated");
14292: } else {
14293: &logthis("unable to contact DNS, no on disk file $diskfile available");
14294: }
14295: } else {
14296: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
14297: if (open(my $config,"<","$perlvar{'lonTabDir'}/dns_$which.tab")) {
14298: my @content = <$config>;
14299: close($config);
14300: &$func(\@content,$hashref);
14301: }
14302: }
14303: return;
14304: }
14305:
14306: # ------------------------------------------------------Get DNS checksums file
14307: sub parse_dns_checksums_tab {
14308: my ($lines,$hashref) = @_;
14309: my $lonhost = $perlvar{'lonHostID'};
14310: my $machine_dom = &Apache::lonnet::host_domain($lonhost);
14311: my $loncaparev = &get_server_loncaparev($machine_dom);
14312: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
14313: my $webconfdir = '/etc/httpd/conf';
14314: if ($distro =~ /^(ubuntu|debian)(\d+)$/) {
14315: $webconfdir = '/etc/apache2';
14316: } elsif ($distro =~ /^sles(\d+)$/) {
14317: if ($1 >= 10) {
14318: $webconfdir = '/etc/apache2';
14319: }
14320: } elsif ($distro =~ /^suse(\d+\.\d+)$/) {
14321: if ($1 >= 10.0) {
14322: $webconfdir = '/etc/apache2';
14323: }
14324: }
14325: my ($release,$timestamp) = split(/\-/,$loncaparev);
14326: my (%chksum,%revnum);
14327: if (ref($lines) eq 'ARRAY') {
14328: chomp(@{$lines});
14329: my $version = shift(@{$lines});
14330: if ($version eq $release) {
14331: foreach my $line (@{$lines}) {
14332: my ($file,$version,$shasum) = split(/,/,$line);
14333: if ($file =~ m{^/etc/httpd/conf}) {
14334: if ($webconfdir eq '/etc/apache2') {
14335: $file =~ s{^\Q/etc/httpd/conf/\E}{$webconfdir/};
14336: }
14337: }
14338: $chksum{$file} = $shasum;
14339: $revnum{$file} = $version;
14340: }
14341: if (ref($hashref) eq 'HASH') {
14342: %{$hashref} = (
14343: sums => \%chksum,
14344: versions => \%revnum,
14345: );
14346: }
14347: }
14348: }
14349: return;
14350: }
14351:
14352: sub fetch_dns_checksums {
14353: my %checksums;
14354: my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
14355: my $loncaparev = &get_server_loncaparev($machine_dom,$perlvar{'lonHostID'});
14356: my ($release,$timestamp) = split(/\-/,$loncaparev);
14357: &get_dns("/adm/dns/checksums/$release",\&parse_dns_checksums_tab,1,1,
14358: \%checksums);
14359: return \%checksums;
14360: }
14361:
14362: sub fetch_crl_pemfile {
14363: return &get_dns("/adm/dns/loncapaCRL",\&save_crl_pem,1,1);
14364: }
14365:
14366: sub save_crl_pem {
14367: my ($response) = @_;
14368: my ($msg,$hadchanges);
14369: if (ref($response)) {
14370: my $now = time;
14371: my $lonca = $perlvar{'lonCertificateDirectory'}.'/'.$perlvar{'lonnetCertificateAuthority'};
14372: my $tmpcrl = $tmpdir.'/'.$perlvar{'lonnetCertRevocationList'}.'_'.$now.'.'.$$.'.tmp';
14373: if (open(my $fh,'>',"$tmpcrl")) {
14374: print $fh $response->content;
14375: close($fh);
14376: if (-e $lonca) {
14377: if (open(PIPE,"openssl crl -in $tmpcrl -inform pem -CAfile $lonca -noout 2>&1 |")) {
14378: my $check = <PIPE>;
14379: close(PIPE);
14380: chomp($check);
14381: if ($check eq 'verify OK') {
14382: my $dest = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
14383: my $backup;
14384: if (-e $dest) {
14385: if (&File::Copy::move($dest,"$dest.bak")) {
14386: $backup = 'ok';
14387: }
14388: }
14389: if (&File::Copy::move($tmpcrl,$dest)) {
14390: $msg = 'ok';
14391: if ($backup) {
14392: my (%oldnums,%newnums);
14393: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest.bak |grep 'Serial Number' |")) {
14394: while (<PIPE>) {
14395: $oldnums{(split(/:/))[1]} = 1;
14396: }
14397: close(PIPE);
14398: }
14399: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest |grep 'Serial Number' |")) {
14400: while(<PIPE>) {
14401: $newnums{(split(/:/))[1]} = 1;
14402: }
14403: close(PIPE);
14404: }
14405: foreach my $key (sort {$b <=> $a } (keys(%newnums))) {
14406: unless (exists($oldnums{$key})) {
14407: $hadchanges = 1;
14408: last;
14409: }
14410: }
14411: unless ($hadchanges) {
14412: foreach my $key (sort {$b <=> $a } (keys(%oldnums))) {
14413: unless (exists($newnums{$key})) {
14414: $hadchanges = 1;
14415: last;
14416: }
14417: }
14418: }
14419: }
14420: }
14421: } else {
14422: unlink($tmpcrl);
14423: }
14424: } else {
14425: unlink($tmpcrl);
14426: }
14427: } else {
14428: unlink($tmpcrl);
14429: }
14430: }
14431: }
14432: return ($msg,$hadchanges);
14433: }
14434:
14435: # ------------------------------------------------------------ Read domain file
14436: {
14437: my $loaded;
14438: my %domain;
14439:
14440: sub parse_domain_tab {
14441: my ($lines) = @_;
14442: foreach my $line (@$lines) {
14443: next if ($line =~ /^(\#|\s*$ )/x);
14444:
14445: chomp($line);
14446: my ($name,@elements) = split(/:/,$line,9);
14447: my %this_domain;
14448: foreach my $field ('description', 'auth_def', 'auth_arg_def',
14449: 'lang_def', 'city', 'longi', 'lati',
14450: 'primary') {
14451: $this_domain{$field} = shift(@elements);
14452: }
14453: $domain{$name} = \%this_domain;
14454: }
14455: }
14456:
14457: sub reset_domain_info {
14458: undef($loaded);
14459: undef(%domain);
14460: }
14461:
14462: sub load_domain_tab {
14463: my ($ignore_cache,$nocache) = @_;
14464: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache,$nocache);
14465: my $fh;
14466: if (open($fh,"<",$perlvar{'lonTabDir'}.'/domain.tab')) {
14467: my @lines = <$fh>;
14468: &parse_domain_tab(\@lines);
14469: }
14470: close($fh);
14471: $loaded = 1;
14472: }
14473:
14474: sub domain {
14475: &load_domain_tab() if (!$loaded);
14476:
14477: my ($name,$what) = @_;
14478: return if ( !exists($domain{$name}) );
14479:
14480: if (!$what) {
14481: return $domain{$name}{'description'};
14482: }
14483: return $domain{$name}{$what};
14484: }
14485:
14486: sub domain_info {
14487: &load_domain_tab() if (!$loaded);
14488: return %domain;
14489: }
14490:
14491: }
14492:
14493:
14494: # ------------------------------------------------------------- Read hosts file
14495: {
14496: my %hostname;
14497: my %hostdom;
14498: my %libserv;
14499: my $loaded;
14500: my %name_to_host;
14501: my %internetdom;
14502: my %LC_dns_serv;
14503:
14504: sub parse_hosts_tab {
14505: my ($file) = @_;
14506: foreach my $configline (@$file) {
14507: next if ($configline =~ /^(\#|\s*$ )/x);
14508: chomp($configline);
14509: if ($configline =~ /^\^/) {
14510: if ($configline =~ /^\^([\w.\-]+)/) {
14511: $LC_dns_serv{$1} = 1;
14512: }
14513: next;
14514: }
14515: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
14516: $name=~s/\s//g;
14517: if ($id && $domain && $role && $name) {
14518: if ((exists($hostname{$id})) && ($hostname{$id} ne '')) {
14519: my $curr = $hostname{$id};
14520: my $skip;
14521: if (ref($name_to_host{$curr}) eq 'ARRAY') {
14522: if (($curr eq $name) && (@{$name_to_host{$curr}} == 1)) {
14523: $skip = 1;
14524: } else {
14525: @{$name_to_host{$curr}} = grep { $_ ne $id } @{$name_to_host{$curr}};
14526: }
14527: }
14528: unless ($skip) {
14529: push(@{$name_to_host{$name}},$id);
14530: }
14531: } else {
14532: push(@{$name_to_host{$name}},$id);
14533: }
14534: $hostname{$id}=$name;
14535: $hostdom{$id}=$domain;
14536: if ($role eq 'library') { $libserv{$id}=$name; }
14537: if (defined($protocol)) {
14538: if ($protocol eq 'https') {
14539: $protocol{$id} = $protocol;
14540: } else {
14541: $protocol{$id} = 'http';
14542: }
14543: } else {
14544: $protocol{$id} = 'http';
14545: }
14546: if (defined($intdom)) {
14547: $internetdom{$id} = $intdom;
14548: }
14549: }
14550: }
14551: }
14552:
14553: sub reset_hosts_info {
14554: &purge_remembered();
14555: &reset_domain_info();
14556: &reset_hosts_ip_info();
14557: undef(%internetdom);
14558: undef(%name_to_host);
14559: undef(%hostname);
14560: undef(%hostdom);
14561: undef(%libserv);
14562: undef($loaded);
14563: }
14564:
14565: sub load_hosts_tab {
14566: my ($ignore_cache,$nocache) = @_;
14567: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache,$nocache);
14568: open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab");
14569: my @config = <$config>;
14570: &parse_hosts_tab(\@config);
14571: close($config);
14572: $loaded=1;
14573: }
14574:
14575: sub hostname {
14576: &load_hosts_tab() if (!$loaded);
14577:
14578: my ($lonid) = @_;
14579: return $hostname{$lonid};
14580: }
14581:
14582: sub all_hostnames {
14583: &load_hosts_tab() if (!$loaded);
14584:
14585: return %hostname;
14586: }
14587:
14588: sub all_names {
14589: my ($ignore_cache,$nocache) = @_;
14590: &load_hosts_tab($ignore_cache,$nocache) if (!$loaded);
14591:
14592: return %name_to_host;
14593: }
14594:
14595: sub all_host_domain {
14596: &load_hosts_tab() if (!$loaded);
14597: return %hostdom;
14598: }
14599:
14600: sub all_host_intdom {
14601: &load_hosts_tab() if (!$loaded);
14602: return %internetdom;
14603: }
14604:
14605: sub is_library {
14606: &load_hosts_tab() if (!$loaded);
14607:
14608: return exists($libserv{$_[0]});
14609: }
14610:
14611: sub all_library {
14612: &load_hosts_tab() if (!$loaded);
14613:
14614: return %libserv;
14615: }
14616:
14617: sub unique_library {
14618: #2x reverse removes all hostnames that appear more than once
14619: my %unique = reverse &all_library();
14620: return reverse %unique;
14621: }
14622:
14623: sub get_servers {
14624: &load_hosts_tab() if (!$loaded);
14625:
14626: my ($domain,$type) = @_;
14627: my %possible_hosts = ($type eq 'library') ? %libserv
14628: : %hostname;
14629: my %result;
14630: if (ref($domain) eq 'ARRAY') {
14631: while ( my ($host,$hostname) = each(%possible_hosts)) {
14632: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
14633: $result{$host} = $hostname;
14634: }
14635: }
14636: } else {
14637: while ( my ($host,$hostname) = each(%possible_hosts)) {
14638: if ($hostdom{$host} eq $domain) {
14639: $result{$host} = $hostname;
14640: }
14641: }
14642: }
14643: return %result;
14644: }
14645:
14646: sub get_unique_servers {
14647: my %unique = reverse &get_servers(@_);
14648: return reverse %unique;
14649: }
14650:
14651: sub host_domain {
14652: &load_hosts_tab() if (!$loaded);
14653:
14654: my ($lonid) = @_;
14655: return $hostdom{$lonid};
14656: }
14657:
14658: sub all_domains {
14659: &load_hosts_tab() if (!$loaded);
14660:
14661: my %seen;
14662: my @uniq = grep(!$seen{$_}++, values(%hostdom));
14663: return @uniq;
14664: }
14665:
14666: sub internet_dom {
14667: &load_hosts_tab() if (!$loaded);
14668:
14669: my ($lonid) = @_;
14670: return $internetdom{$lonid};
14671: }
14672:
14673: sub is_LC_dns {
14674: &load_hosts_tab() if (!$loaded);
14675:
14676: my ($hostname) = @_;
14677: return exists($LC_dns_serv{$hostname});
14678: }
14679:
14680: }
14681:
14682: {
14683: my %iphost;
14684: my %name_to_ip;
14685: my %lonid_to_ip;
14686:
14687: sub get_hosts_from_ip {
14688: my ($ip) = @_;
14689: my %iphosts = &get_iphost();
14690: if (ref($iphosts{$ip})) {
14691: return @{$iphosts{$ip}};
14692: }
14693: return;
14694: }
14695:
14696: sub reset_hosts_ip_info {
14697: undef(%iphost);
14698: undef(%name_to_ip);
14699: undef(%lonid_to_ip);
14700: }
14701:
14702: sub get_host_ip {
14703: my ($lonid) = @_;
14704: if (exists($lonid_to_ip{$lonid})) {
14705: return $lonid_to_ip{$lonid};
14706: }
14707: my $name=&hostname($lonid);
14708: my $ip = gethostbyname($name);
14709: return if (!$ip || length($ip) ne 4);
14710: $ip=inet_ntoa($ip);
14711: $name_to_ip{$name} = $ip;
14712: $lonid_to_ip{$lonid} = $ip;
14713: return $ip;
14714: }
14715:
14716: sub get_iphost {
14717: my ($ignore_cache,$nocache) = @_;
14718:
14719: if (!$ignore_cache) {
14720: if (%iphost) {
14721: return %iphost;
14722: }
14723: my ($ip_info,$cached)=
14724: &Apache::lonnet::is_cached_new('iphost','iphost');
14725: if ($cached) {
14726: %iphost = %{$ip_info->[0]};
14727: %name_to_ip = %{$ip_info->[1]};
14728: %lonid_to_ip = %{$ip_info->[2]};
14729: return %iphost;
14730: }
14731: }
14732:
14733: # get yesterday's info for fallback
14734: my %old_name_to_ip;
14735: my ($ip_info,$cached)=
14736: &Apache::lonnet::is_cached_new('iphost','iphost');
14737: if ($cached) {
14738: %old_name_to_ip = %{$ip_info->[1]};
14739: }
14740:
14741: my %name_to_host = &all_names($ignore_cache,$nocache);
14742: foreach my $name (keys(%name_to_host)) {
14743: my $ip;
14744: if (!exists($name_to_ip{$name})) {
14745: $ip = gethostbyname($name);
14746: if (!$ip || length($ip) ne 4) {
14747: if (defined($old_name_to_ip{$name})) {
14748: $ip = $old_name_to_ip{$name};
14749: &logthis("Can't find $name defaulting to old $ip");
14750: } else {
14751: &logthis("Name $name no IP found");
14752: next;
14753: }
14754: } else {
14755: $ip=inet_ntoa($ip);
14756: }
14757: $name_to_ip{$name} = $ip;
14758: } else {
14759: $ip = $name_to_ip{$name};
14760: }
14761: foreach my $id (@{ $name_to_host{$name} }) {
14762: $lonid_to_ip{$id} = $ip;
14763: }
14764: push(@{$iphost{$ip}},@{$name_to_host{$name}});
14765: }
14766: unless ($nocache) {
14767: &do_cache_new('iphost','iphost',
14768: [\%iphost,\%name_to_ip,\%lonid_to_ip],
14769: 48*60*60);
14770: }
14771:
14772: return %iphost;
14773: }
14774:
14775: #
14776: # Given a DNS returns the loncapa host name for that DNS
14777: #
14778: sub host_from_dns {
14779: my ($dns) = @_;
14780: my @hosts;
14781: my $ip;
14782:
14783: if (exists($name_to_ip{$dns})) {
14784: $ip = $name_to_ip{$dns};
14785: }
14786: if (!$ip) {
14787: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
14788: if (length($ip) == 4) {
14789: $ip = &IO::Socket::inet_ntoa($ip);
14790: }
14791: }
14792: if ($ip) {
14793: @hosts = get_hosts_from_ip($ip);
14794: return $hosts[0];
14795: }
14796: return undef;
14797: }
14798:
14799: sub get_internet_names {
14800: my ($lonid) = @_;
14801: return if ($lonid eq '');
14802: my ($idnref,$cached)=
14803: &Apache::lonnet::is_cached_new('internetnames',$lonid);
14804: if ($cached) {
14805: return $idnref;
14806: }
14807: my $ip = &get_host_ip($lonid);
14808: my @hosts = &get_hosts_from_ip($ip);
14809: my %iphost = &get_iphost();
14810: my (@idns,%seen);
14811: foreach my $id (@hosts) {
14812: my $dom = &host_domain($id);
14813: my $prim_id = &domain($dom,'primary');
14814: my $prim_ip = &get_host_ip($prim_id);
14815: next if ($seen{$prim_ip});
14816: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
14817: foreach my $id (@{$iphost{$prim_ip}}) {
14818: my $intdom = &internet_dom($id);
14819: unless (grep(/^\Q$intdom\E$/,@idns)) {
14820: push(@idns,$intdom);
14821: }
14822: }
14823: }
14824: $seen{$prim_ip} = 1;
14825: }
14826: return &do_cache_new('internetnames',$lonid,\@idns,12*60*60);
14827: }
14828:
14829: }
14830:
14831: sub all_loncaparevs {
14832: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11);
14833: }
14834:
14835: # ---------------------------------------------------------- Read loncaparev table
14836: {
14837: sub load_loncaparevs {
14838: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
14839: if (open(my $config,"<","$perlvar{'lonTabDir'}/loncaparevs.tab")) {
14840: while (my $configline=<$config>) {
14841: chomp($configline);
14842: my ($hostid,$loncaparev)=split(/:/,$configline);
14843: $loncaparevs{$hostid}=$loncaparev;
14844: }
14845: close($config);
14846: }
14847: }
14848: }
14849: }
14850:
14851: # ---------------------------------------------------------- Read serverhostID table
14852: {
14853: sub load_serverhomeIDs {
14854: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
14855: if (open(my $config,"<","$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
14856: while (my $configline=<$config>) {
14857: chomp($configline);
14858: my ($name,$id)=split(/:/,$configline);
14859: $serverhomeIDs{$name}=$id;
14860: }
14861: close($config);
14862: }
14863: }
14864: }
14865: }
14866:
14867:
14868: BEGIN {
14869:
14870: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
14871: unless ($readit) {
14872: {
14873: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
14874: %perlvar = (%perlvar,%{$configvars});
14875: }
14876:
14877:
14878: # ------------------------------------------------------ Read spare server file
14879: {
14880: open(my $config,"<","$perlvar{'lonTabDir'}/spare.tab");
14881:
14882: while (my $configline=<$config>) {
14883: chomp($configline);
14884: if ($configline) {
14885: my ($host,$type) = split(':',$configline,2);
14886: if (!defined($type) || $type eq '') { $type = 'default' };
14887: push(@{ $spareid{$type} }, $host);
14888: }
14889: }
14890: close($config);
14891: }
14892: # ------------------------------------------------------------ Read permissions
14893: {
14894: open(my $config,"<","$perlvar{'lonTabDir'}/roles.tab");
14895:
14896: while (my $configline=<$config>) {
14897: chomp($configline);
14898: if ($configline) {
14899: my ($role,$perm)=split(/ /,$configline);
14900: if ($perm ne '') { $pr{$role}=$perm; }
14901: }
14902: }
14903: close($config);
14904: }
14905:
14906: # -------------------------------------------- Read plain texts for permissions
14907: {
14908: open(my $config,"<","$perlvar{'lonTabDir'}/rolesplain.tab");
14909:
14910: while (my $configline=<$config>) {
14911: chomp($configline);
14912: if ($configline) {
14913: my ($short,@plain)=split(/:/,$configline);
14914: %{$prp{$short}} = ();
14915: if (@plain > 0) {
14916: $prp{$short}{'std'} = $plain[0];
14917: for (my $i=1; $i<@plain; $i++) {
14918: $prp{$short}{'alt'.$i} = $plain[$i];
14919: }
14920: }
14921: }
14922: }
14923: close($config);
14924: }
14925:
14926: # ---------------------------------------------------------- Read package table
14927: {
14928: open(my $config,"<","$perlvar{'lonTabDir'}/packages.tab");
14929:
14930: while (my $configline=<$config>) {
14931: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
14932: chomp($configline);
14933: my ($short,$plain)=split(/:/,$configline);
14934: my ($pack,$name)=split(/\&/,$short);
14935: if ($plain ne '') {
14936: $packagetab{$pack.'&'.$name.'&name'}=$name;
14937: $packagetab{$short}=$plain;
14938: }
14939: }
14940: close($config);
14941: }
14942:
14943: # ---------------------------------------------------------- Read loncaparev table
14944:
14945: &load_loncaparevs();
14946:
14947: # ---------------------------------------------------------- Read serverhostID table
14948:
14949: &load_serverhomeIDs();
14950:
14951: # ---------------------------------------------------------- Read releaseslist XML
14952: {
14953: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
14954: if (-e $file) {
14955: my $parser = HTML::LCParser->new($file);
14956: while (my $token = $parser->get_token()) {
14957: if ($token->[0] eq 'S') {
14958: my $item = $token->[1];
14959: my $name = $token->[2]{'name'};
14960: my $value = $token->[2]{'value'};
14961: my $valuematch = $token->[2]{'valuematch'};
14962: my $namematch = $token->[2]{'namematch'};
14963: if ($item eq 'parameter') {
14964: if (($namematch ne '') || (($name ne '') && ($value ne '' || $valuematch ne ''))) {
14965: my $release = $parser->get_text();
14966: $release =~ s/(^\s*|\s*$ )//gx;
14967: $needsrelease{$item.':'.$name.':'.$value.':'.$valuematch.':'.$namematch} = $release;
14968: }
14969: } elsif ($item ne '' && $name ne '') {
14970: my $release = $parser->get_text();
14971: $release =~ s/(^\s*|\s*$ )//gx;
14972: $needsrelease{$item.':'.$name.':'.$value} = $release;
14973: }
14974: }
14975: }
14976: }
14977: }
14978:
14979: # ---------------------------------------------------------- Read managers table
14980: {
14981: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
14982: if (open(my $config,"<","$perlvar{'lonTabDir'}/managers.tab")) {
14983: while (my $configline=<$config>) {
14984: chomp($configline);
14985: next if ($configline =~ /^\#/);
14986: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
14987: $managerstab{$configline} = 1;
14988: }
14989: }
14990: close($config);
14991: }
14992: }
14993: }
14994:
14995: # ------------- set up temporary directory
14996: {
14997: $tmpdir = LONCAPA::tempdir();
14998:
14999: }
15000:
15001: # ------------- set default texengine (domain default overrides this)
15002: {
15003: $deftex = LONCAPA::texengine();
15004: }
15005:
15006: # ------------- set default minimum length for passwords for internal auth users
15007: {
15008: $passwdmin = LONCAPA::passwd_min();
15009: }
15010:
15011: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
15012: 'compress_threshold'=> 20_000,
15013: });
15014:
15015: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
15016: $dumpcount=0;
15017: $locknum=0;
15018:
15019: &logtouch();
15020: &logthis('<font color="yellow">INFO: Read configuration</font>');
15021: $readit=1;
15022: {
15023: use integer;
15024: my $test=(2**32)+1;
15025: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
15026: &logthis(" Detected 64bit platform ($_64bit)");
15027: }
15028: }
15029: }
15030:
15031: 1;
15032: __END__
15033:
15034: =pod
15035:
15036: =head1 NAME
15037:
15038: Apache::lonnet - Subroutines to ask questions about things in the network.
15039:
15040: =head1 SYNOPSIS
15041:
15042: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
15043:
15044: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
15045:
15046: Common parameters:
15047:
15048: =over 4
15049:
15050: =item *
15051:
15052: $uname : an internal username (if $cname expecting a course Id specifically)
15053:
15054: =item *
15055:
15056: $udom : a domain (if $cdom expecting a course's domain specifically)
15057:
15058: =item *
15059:
15060: $symb : a resource instance identifier
15061:
15062: =item *
15063:
15064: $namespace : the name of a .db file that contains the data needed or
15065: being set.
15066:
15067: =back
15068:
15069: =head1 OVERVIEW
15070:
15071: lonnet provides subroutines which interact with the
15072: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
15073: about classes, users, and resources.
15074:
15075: For many of these objects you can also use this to store data about
15076: them or modify them in various ways.
15077:
15078: =head2 Symbs
15079:
15080: To identify a specific instance of a resource, LON-CAPA uses symbols
15081: or "symbs"X<symb>. These identifiers are built from the URL of the
15082: map, the resource number of the resource in the map, and the URL of
15083: the resource itself. The latter is somewhat redundant, but might help
15084: if maps change.
15085:
15086: An example is
15087:
15088: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
15089:
15090: The respective map entry is
15091:
15092: <resource id="19" src="/res/msu/korte/tests/part12.problem"
15093: title="Problem 2">
15094: </resource>
15095:
15096: Symbs are used by the random number generator, as well as to store and
15097: restore data specific to a certain instance of for example a problem.
15098:
15099: =head2 Storing And Retrieving Data
15100:
15101: X<store()>X<cstore()>X<restore()>Three of the most important functions
15102: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
15103: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
15104: is is the non-critical message twin of cstore. These functions are for
15105: handlers to store a perl hash to a user's permanent data space in an
15106: easy manner, and to retrieve it again on another call. It is expected
15107: that a handler would use this once at the beginning to retrieve data,
15108: and then again once at the end to send only the new data back.
15109:
15110: The data is stored in the user's data directory on the user's
15111: homeserver under the ID of the course.
15112:
15113: The hash that is returned by restore will have all of the previous
15114: value for all of the elements of the hash.
15115:
15116: Example:
15117:
15118: #creating a hash
15119: my %hash;
15120: $hash{'foo'}='bar';
15121:
15122: #storing it
15123: &Apache::lonnet::cstore(\%hash);
15124:
15125: #changing a value
15126: $hash{'foo'}='notbar';
15127:
15128: #adding a new value
15129: $hash{'bar'}='foo';
15130: &Apache::lonnet::cstore(\%hash);
15131:
15132: #retrieving the hash
15133: my %history=&Apache::lonnet::restore();
15134:
15135: #print the hash
15136: foreach my $key (sort(keys(%history))) {
15137: print("\%history{$key} = $history{$key}");
15138: }
15139:
15140: Will print out:
15141:
15142: %history{1:foo} = bar
15143: %history{1:keys} = foo:timestamp
15144: %history{1:timestamp} = 990455579
15145: %history{2:bar} = foo
15146: %history{2:foo} = notbar
15147: %history{2:keys} = foo:bar:timestamp
15148: %history{2:timestamp} = 990455580
15149: %history{bar} = foo
15150: %history{foo} = notbar
15151: %history{timestamp} = 990455580
15152: %history{version} = 2
15153:
15154: Note that the special hash entries C<keys>, C<version> and
15155: C<timestamp> were added to the hash. C<version> will be equal to the
15156: total number of versions of the data that have been stored. The
15157: C<timestamp> attribute will be the UNIX time the hash was
15158: stored. C<keys> is available in every historical section to list which
15159: keys were added or changed at a specific historical revision of a
15160: hash.
15161:
15162: B<Warning>: do not store the hash that restore returns directly. This
15163: will cause a mess since it will restore the historical keys as if the
15164: were new keys. I.E. 1:foo will become 1:1:foo etc.
15165:
15166: Calling convention:
15167:
15168: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
15169: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$laststore);
15170:
15171: For more detailed information, see lonnet specific documentation.
15172:
15173: =head1 RETURN MESSAGES
15174:
15175: =over 4
15176:
15177: =item * B<con_lost>: unable to contact remote host
15178:
15179: =item * B<con_delayed>: unable to contact remote host, message will be delivered
15180: when the connection is brought back up
15181:
15182: =item * B<con_failed>: unable to contact remote host and unable to save message
15183: for later delivery
15184:
15185: =item * B<error:>: an error a occurred, a description of the error follows the :
15186:
15187: =item * B<no_such_host>: unable to fund a host associated with the user/domain
15188: that was requested
15189:
15190: =back
15191:
15192: =head1 PUBLIC SUBROUTINES
15193:
15194: =head2 Session Environment Functions
15195:
15196: =over 4
15197:
15198: =item *
15199: X<appenv()>
15200: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
15201: the user envirnoment file, and will be restored for each access this
15202: user makes during this session, also modifies the %env for the current
15203: process. Optional rolesarrayref - if defined contains a reference to an array
15204: of roles which are exempt from the restriction on modifying user.role entries
15205: in the user's environment.db and in %env.
15206:
15207: =item *
15208: X<delenv()>
15209: B<delenv($delthis,$regexp)>: removes all items from the session
15210: environment file that begin with $delthis. If the
15211: optional second arg - $regexp - is true, $delthis is treated as a
15212: regular expression, otherwise \Q$delthis\E is used.
15213: The values are also deleted from the current processes %env.
15214:
15215: =item * get_env_multiple($name)
15216:
15217: gets $name from the %env hash, it seemlessly handles the cases where multiple
15218: values may be defined and end up as an array ref.
15219:
15220: returns an array of values
15221:
15222: =back
15223:
15224: =head2 User Information
15225:
15226: =over 4
15227:
15228: =item *
15229: X<queryauthenticate()>
15230: B<queryauthenticate($uname,$udom)>: try to determine user's current
15231: authentication scheme
15232:
15233: =item *
15234: X<authenticate()>
15235: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
15236: authenticate user from domain's lib servers (first use the current
15237: one). C<$upass> should be the users password.
15238: $checkdefauth is optional (value is 1 if a check should be made to
15239: authenticate user using default authentication method, and allow
15240: account creation if username does not have account in the domain).
15241: $clientcancheckhost is optional (value is 1 if checking whether the
15242: server can host will occur on the client side in lonauth.pm).
15243:
15244: =item *
15245: X<homeserver()>
15246: B<homeserver($uname,$udom)>: find the server which has
15247: the user's directory and files (there must be only one), this caches
15248: the answer, and also caches if there is a borken connection.
15249:
15250: =item *
15251: X<idget()>
15252: B<idget($udom,$idsref,$namespace)>: find the usernames behind either
15253: a list of student/employee IDs or clicker IDs
15254: (student/employee IDs are a unique resource in a domain, there must be
15255: only 1 ID per username, and only 1 username per ID in a specific domain).
15256: clickerIDs are not necessarily unique, as students might share clickers.
15257: (returns hash: id=>name,id=>name)
15258:
15259: =item *
15260: X<idrget()>
15261: B<idrget($udom,@unames)>: find the IDs behind a list of
15262: usernames (returns hash: name=>id,name=>id)
15263:
15264: =item *
15265: X<idput()>
15266: B<idput($udom,$idsref,$uhome,$namespace)>: store away a list of
15267: names and associated student/employee IDs or clicker IDs.
15268:
15269: =item *
15270: X<iddel()>
15271: B<iddel($udom,$idshashref,$uhome,$namespace)>: delete unwanted
15272: student/employee ID or clicker ID username look-ups from domain.
15273: The homeserver ($uhome) and namespace ($namespace) are optional.
15274: If no $uhome is provided, it will be determined usig &homeserver()
15275: for each user. If no $namespace is provided, the default is ids.
15276:
15277: =item *
15278: X<updateclickers()>
15279: B<updateclickers($udom,$action,$idshashref,$uhome,$critical)>: update
15280: clicker ID-to-username look-ups in clickers.db on library server.
15281: Permitted actions are add or del (i.e., add or delete). The
15282: clickers.db contains clickerID as keys (escaped), and each corresponding
15283: value is an escaped comma-separated list of usernames (for whom the
15284: library server is the homeserver), who registered that particular ID.
15285: If $critical is true, the update will be sent via &critical, otherwise
15286: &reply() will be used.
15287:
15288: =item *
15289: X<rolesinit()>
15290: B<rolesinit($udom,$username)>: get user privileges.
15291: returns user role, first access and timer interval hashes
15292:
15293: =item *
15294: X<privileged()>
15295: B<privileged($username,$domain)>: returns a true if user has a
15296: privileged and active role (i.e. su or dc), false otherwise.
15297:
15298: =item *
15299: X<getsection()>
15300: B<getsection($udom,$uname,$cname)>: finds the section of student in the
15301: course $cname, return section name/number or '' for "not in course"
15302: and '-1' for "no section"
15303:
15304: =item *
15305: X<userenvironment()>
15306: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
15307: passed in @what from the requested user's environment, returns a hash
15308:
15309: =item *
15310: X<userlog_query()>
15311: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
15312: activity.log file. %filters defines filters applied when parsing the
15313: log file. These can be start or end timestamps, or the type of action
15314: - log to look for Login or Logout events, check for Checkin or
15315: Checkout, role for role selection. The response is in the form
15316: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
15317: escaped strings of the action recorded in the activity.log file.
15318:
15319: =back
15320:
15321: =head2 User Roles
15322:
15323: =over 4
15324:
15325: =item *
15326:
15327: allowed($priv,$uri,$symb,$role,$clientip,$noblockcheck) : check for a user privilege;
15328: returns codes for allowed actions.
15329:
15330: The first argument is required, all others are optional.
15331:
15332: $priv is the privilege being checked.
15333: $uri contains additional information about what is being checked for access (e.g.,
15334: URL, course ID etc.).
15335: $symb is the unique resource instance identifier in a course; if needed,
15336: but not provided, it will be retrieved via a call to &symbread().
15337: $role is the role for which a priv is being checked (only used if priv is evb).
15338: $clientip is the user's IP address (only used when checking for access to portfolio
15339: files).
15340: $noblockcheck, if true, skips calls to &has_comm_blocking() for the bre priv. This
15341: prevents recursive calls to &allowed.
15342:
15343: F: full access
15344: U,I,K: authentication modes (cxx only)
15345: '': forbidden
15346: 1: user needs to choose course
15347: 2: browse allowed
15348: A: passphrase authentication needed
15349: B: access temporarily blocked because of a blocking event in a course.
15350: D: access blocked because access is required via session initiated via deep-link
15351:
15352: =item *
15353:
15354: constructaccess($url,$setpriv) : check for access to construction space URL
15355:
15356: See if the owner domain and name in the URL match those in the
15357: expected environment. If so, return three element list
15358: ($ownername,$ownerdomain,$ownerhome).
15359:
15360: Otherwise return the null string.
15361:
15362: If second argument 'setpriv' is true, it assigns the privileges,
15363: and returns the same three element list, unless the owner has
15364: blocked "ad hoc" Domain Coordinator access to the Author Space,
15365: in which case the null string is returned.
15366:
15367: =item *
15368:
15369: definerole($rolename,$sysrole,$domrole,$courole,$uname,$udom) : define role;
15370: define a custom role rolename set privileges in format of lonTabs/roles.tab
15371: for system, domain, and course level. $uname and $udom are optional (current
15372: user's username and domain will be used when either of $uname or $udom are absent.
15373:
15374: =item *
15375:
15376: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
15377: (rolesplain.tab); plain text explanation of a user role term.
15378: $type is Course (default) or Community.
15379: If $forcedefault evaluates to true, text returned will be default
15380: text for $type. Otherwise, if this is a course, the text returned
15381: will be a custom name for the role (if defined in the course's
15382: environment). If no custom name is defined the default is returned.
15383:
15384: =item *
15385:
15386: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
15387: All arguments are optional. Returns a hash of a roles, either for
15388: co-author/assistant author roles for a user's Construction Space
15389: (default), or if $context is 'userroles', roles for the user himself,
15390: In the hash, keys are set to colon-separated $uname,$udom,$role, and
15391: (optionally) if $withsec is true, a fourth colon-separated item - $section.
15392: For each key, value is set to colon-separated start and end times for
15393: the role. If no username and domain are specified, will default to
15394: current user/domain. Types, roles, and roledoms are references to arrays
15395: of role statuses (active, future or previous), roles
15396: (e.g., cc,in, st etc.) and domains of the roles which can be used
15397: to restrict the list of roles reported. If no array ref is
15398: provided for types, will default to return only active roles.
15399:
15400: =item *
15401:
15402: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
15403: user: $uname:$udom has a role in the course: $cdom_$cnum.
15404:
15405: Additional optional arguments are: $type (if role checking is to be restricted
15406: to certain user status types -- previous (expired roles), active (currently
15407: available roles) or future (roles available in the future), and
15408: $hideprivileged -- if true will not report course roles for users who
15409: have active Domain Coordinator role in course's domain or in additional
15410: domains (specified in 'Domains to check for privileged users' in course
15411: environment -- set via: Course Settings -> Classlists and staff listing).
15412:
15413: =item *
15414:
15415: privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
15416: $username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
15417: $possdomains and $possroles are optional array refs -- to domains to check and
15418: roles to check. If $possdomains is not specified, a dump will be done of the
15419: users' roles.db to check for a dc or su role in any domain. This can be
15420: time consuming if &privileged is called repeatedly (e.g., when displaying a
15421: classlist), so in such cases, supplying a $possdomains array is preferred, as
15422: this then allows &privileged_by_domain() to be used, which caches the identity
15423: of privileged users, eliminating the need for repeated calls to &dump().
15424:
15425: =item *
15426:
15427: privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
15428: where the outer hash keys are domains specified in the $possdomains array ref,
15429: next inner hash keys are privileged roles specified in the $roles array ref,
15430: and the innermost hash contains key = value pairs for username:domain = end:start
15431: for active or future "privileged" users with that role in that domain. To avoid
15432: repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
15433: innerhash are cached using priv_$role and $dom as the identifiers.
15434:
15435: =back
15436:
15437: =head2 User Modification
15438:
15439: =over 4
15440:
15441: =item *
15442:
15443: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
15444: user for the level given by URL. Optional start and end dates (leave empty
15445: string or zero for "no date")
15446:
15447: =item *
15448:
15449: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
15450: change a users, password, possible return values are: ok,
15451: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
15452: refused
15453:
15454: =item *
15455:
15456: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
15457:
15458: =item *
15459:
15460: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
15461: $forceid,$desiredhome,$email,$inststatus,$candelete) :
15462:
15463: will update user information (firstname,middlename,lastname,generation,
15464: permanentemail), and if forceid is true, student/employee ID also.
15465: A user's institutional affiliation(s) can also be updated.
15466: User information fields will not be overwritten with empty entries
15467: unless the field is included in the $candelete array reference.
15468: This array is included when a single user is modified via "Manage Users",
15469: or when Autoupdate.pl is run by cron in a domain.
15470:
15471: =item *
15472:
15473: modifystudent
15474:
15475: modify a student's enrollment and identification information.
15476: The course id is resolved based on the current user's environment.
15477: This means the invoking user must be a course coordinator or otherwise
15478: associated with a course.
15479:
15480: This call is essentially a wrapper for lonnet::modifyuser and
15481: lonnet::modify_student_enrollment
15482:
15483: Inputs:
15484:
15485: =over 4
15486:
15487: =item B<$udom> Student's loncapa domain
15488:
15489: =item B<$uname> Student's loncapa login name
15490:
15491: =item B<$uid> Student/Employee ID
15492:
15493: =item B<$umode> Student's authentication mode
15494:
15495: =item B<$upass> Student's password
15496:
15497: =item B<$first> Student's first name
15498:
15499: =item B<$middle> Student's middle name
15500:
15501: =item B<$last> Student's last name
15502:
15503: =item B<$gene> Student's generation
15504:
15505: =item B<$usec> Student's section in course
15506:
15507: =item B<$end> Unix time of the roles expiration
15508:
15509: =item B<$start> Unix time of the roles start date
15510:
15511: =item B<$forceid> If defined, allow $uid to be changed
15512:
15513: =item B<$desiredhome> server to use as home server for student
15514:
15515: =item B<$email> Student's permanent e-mail address
15516:
15517: =item B<$type> Type of enrollment (auto or manual)
15518:
15519: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
15520:
15521: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
15522:
15523: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
15524:
15525: =item B<$context> role change context (shown in User Management Logs display in a course)
15526:
15527: =item B<$inststatus> institutional status of user - : separated string of escaped status types
15528:
15529: =item B<$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.
15530:
15531: =back
15532:
15533: =item *
15534:
15535: modify_student_enrollment
15536:
15537: Change a student's enrollment status in a class. The environment variable
15538: 'role.request.course' must be defined for this function to proceed.
15539:
15540: Inputs:
15541:
15542: =over 4
15543:
15544: =item $udom, student's domain
15545:
15546: =item $uname, student's name
15547:
15548: =item $uid, student's user id
15549:
15550: =item $first, student's first name
15551:
15552: =item $middle
15553:
15554: =item $last
15555:
15556: =item $gene
15557:
15558: =item $usec
15559:
15560: =item $end
15561:
15562: =item $start
15563:
15564: =item $type
15565:
15566: =item $locktype
15567:
15568: =item $cid
15569:
15570: =item $selfenroll
15571:
15572: =item $context
15573:
15574: =item $credits, number of credits student will earn from this class
15575:
15576: =item $instsec, institutional course section code for student
15577:
15578: =back
15579:
15580:
15581: =item *
15582:
15583: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
15584: custom role; give a custom role to a user for the level given by URL. Specify
15585: name and domain of role author, and role name
15586:
15587: =item *
15588:
15589: revokerole($udom,$uname,$url,$role) : revoke a role for url
15590:
15591: =item *
15592:
15593: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
15594:
15595: =back
15596:
15597: =head2 Course Infomation
15598:
15599: =over 4
15600:
15601: =item *
15602:
15603: coursedescription($courseid,$options) : returns a hash of information about the
15604: specified course id, including all environment settings for the
15605: course, the description of the course will be in the hash under the
15606: key 'description'
15607:
15608: $options is an optional parameter that if supplied is a hash reference that controls
15609: what how this function works. It has the following key/values:
15610:
15611: =over 4
15612:
15613: =item freshen_cache
15614:
15615: If defined, and the environment cache for the course is valid, it is
15616: returned in the returned hash.
15617:
15618: =item one_time
15619:
15620: If defined, the last cache time is set to _now_
15621:
15622: =item user
15623:
15624: If defined, the supplied username is used instead of the current user.
15625:
15626:
15627: =back
15628:
15629: =item *
15630:
15631: resdata($name,$domain,$type,@which) : request for current parameter
15632: setting for a specific $type, where $type is either 'course' or 'user',
15633: @what should be a list of parameters to ask about. This routine caches
15634: answers for 10 minutes.
15635:
15636: =item *
15637:
15638: get_courseresdata($courseid, $domain) : dump the entire course resource
15639: data base, returning a hash that is keyed by the resource name and has
15640: values that are the resource value. I believe that the timestamps and
15641: versions are also returned.
15642:
15643: get_numsuppfiles($cnum,$cdom) : retrieve number of files in a course's
15644: supplemental content area. This routine caches the number of files for
15645: 10 minutes.
15646:
15647: =back
15648:
15649: =head2 Course Modification
15650:
15651: =over 4
15652:
15653: =item *
15654:
15655: writecoursepref($courseid,%prefs) : write preferences (environment
15656: database) for a course
15657:
15658: =item *
15659:
15660: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
15661:
15662: =item *
15663:
15664: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
15665:
15666: =item *
15667:
15668: is_course($courseid), is_course($cdom, $cnum)
15669:
15670: Accepts either a combined $courseid (in the form of domain_courseid) or the
15671: two component version $cdom, $cnum. It checks if the specified course exists.
15672:
15673: Returns:
15674: undef if the course doesn't exist, otherwise
15675: in scalar context the combined courseid.
15676: in list context the two components of the course identifier, domain and
15677: courseid.
15678:
15679: =back
15680:
15681: =head2 Bubblesheet Configuration
15682:
15683: =over 4
15684:
15685: =item *
15686:
15687: get_scantron_config($which)
15688:
15689: $which - the name of the configuration to parse from the file.
15690:
15691: Parses and returns the bubblesheet configuration line selected as a
15692: hash of configuration file fields.
15693:
15694:
15695: Returns:
15696: If the named configuration is not in the file, an empty
15697: hash is returned.
15698:
15699: a hash with the fields
15700: name - internal name for the this configuration setup
15701: description - text to display to operator that describes this config
15702: CODElocation - if 0 or the string 'none'
15703: - no CODE exists for this config
15704: if -1 || the string 'letter'
15705: - a CODE exists for this config and is
15706: a string of letters
15707: Unsupported value (but planned for future support)
15708: if a positive integer
15709: - The CODE exists as the first n items from
15710: the question section of the form
15711: if the string 'number'
15712: - The CODE exists for this config and is
15713: a string of numbers
15714: CODEstart - (only matter if a CODE exists) column in the line where
15715: the CODE starts
15716: CODElength - length of the CODE
15717: IDstart - column where the student/employee ID starts
15718: IDlength - length of the student/employee ID info
15719: Qstart - column where the information from the bubbled
15720: 'questions' start
15721: Qlength - number of columns comprising a single bubble line from
15722: the sheet. (usually either 1 or 10)
15723: Qon - either a single character representing the character used
15724: to signal a bubble was chosen in the positional setup, or
15725: the string 'letter' if the letter of the chosen bubble is
15726: in the final, or 'number' if a number representing the
15727: chosen bubble is in the file (1->A 0->J)
15728: Qoff - the character used to represent that a bubble was
15729: left blank
15730: PaperID - if the scanning process generates a unique number for each
15731: sheet scanned the column that this ID number starts in
15732: PaperIDlength - number of columns that comprise the unique ID number
15733: for the sheet of paper
15734: FirstName - column that the first name starts in
15735: FirstNameLength - number of columns that the first name spans
15736: LastName - column that the last name starts in
15737: LastNameLength - number of columns that the last name spans
15738: BubblesPerRow - number of bubbles available in each row used to
15739: bubble an answer. (If not specified, 10 assumed).
15740:
15741:
15742: =item *
15743:
15744: get_scantronformat_file($cdom)
15745:
15746: $cdom - the course's domain (optional); if not supplied, uses
15747: domain for current $env{'request.course.id'}.
15748:
15749: Returns an array containing lines from the scantron format file for
15750: the domain of the course.
15751:
15752: If a url for a custom.tab file is listed in domain's configuration.db,
15753: lines are from this file.
15754:
15755: Otherwise, if a default.tab has been published in RES space by the
15756: domainconfig user, lines are from this file.
15757:
15758: Otherwise, fall back to getting lines from the legacy file on the
15759: local server: /home/httpd/lonTabs/default_scantronformat.tab
15760:
15761: =back
15762:
15763: =head2 Resource Subroutines
15764:
15765: =over 4
15766:
15767: =item *
15768:
15769: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
15770:
15771: =item *
15772:
15773: repcopy($filename) : subscribes to the requested file, and attempts to
15774: replicate from the owning library server, Might return
15775: 'unavailable', 'not_found', 'forbidden', 'ok', or
15776: 'bad_request', also attempts to grab the metadata for the
15777: resource. Expects the local filesystem pathname
15778: (/home/httpd/html/res/....)
15779:
15780: =back
15781:
15782: =head2 Resource Information
15783:
15784: =over 4
15785:
15786: =item *
15787:
15788: EXT($varname,$symb,$udom,$uname,$usection,$recurse,$cid) : evaluates
15789: and returns the value of a variety of different possible values,
15790: $varname should be a request string, and the other parameters can be
15791: used to specify who and what one is asking about. Ordinarily, $cid
15792: does not need to be specified, as it is retrived from
15793: $env{'request.course.id'}, but &Apache::lonnet::EXT() is called
15794: within lonuserstate::loadmap() when initializing a course, before
15795: $env{'request.course.id'} has been set, so it needs to be provided
15796: in that one case.
15797:
15798: Possible values for $varname are environment.lastname (or other item
15799: from the envirnment hash), user.name (or someother aspect about the
15800: user), resource.0.maxtries (or some other part and parameter of a
15801: resource)
15802:
15803: =item *
15804:
15805: directcondval($number) : get current value of a condition; reads from a state
15806: string
15807:
15808: =item *
15809:
15810: condval($condidx) : value of condition index based on state
15811:
15812: =item *
15813:
15814: metadata($uri,$what,$toolsymb,$liburi,$prefix,$depthcount) : request a
15815: resource's metadata, $what should be either a specific key, or either
15816: 'keys' (to get a list of possible keys) or 'packages' to get a list of
15817: packages that this resource currently uses, the last 3 arguments are
15818: only used internally for recursive metadata.
15819:
15820: the toolsymb is only used where the uri is for an external tool (for which
15821: the uri as well as the symb are guaranteed to be unique).
15822:
15823: this function automatically caches all requests except any made recursively
15824: to retrieve a list of metadata keys for an imported library file ($liburi is
15825: defined).
15826:
15827: =item *
15828:
15829: metadata_query($query,$custom,$customshow) : make a metadata query against the
15830: network of library servers; returns file handle of where SQL and regex results
15831: will be stored for query
15832:
15833: =item *
15834:
15835: symbread($filename,$donotrecurse,$ignorecachednull,$checkforblock,$possibles) :
15836: return symbolic list entry (all arguments optional).
15837:
15838: Args: filename is the filename (including path) for the file for which a symb
15839: is required; donotrecurse, if true will prevent calls to allowed() being made
15840: to check access status if more than one resource was found in the bighash
15841: (see rev. 1.249) to avoid an infinite loop if an ambiguous resource is part of
15842: a randompick); ignorecachednull, if true will prevent a symb of '' being
15843: returned if $env{$cache_str} is defined as ''; checkforblock if true will
15844: cause possible symbs to be checked to determine if they are subject to content
15845: blocking, if so they will not be included as possible symbs; possibles is a
15846: ref to a hash, which, as a side effect, will be populated with all possible
15847: symbs (content blocking not tested).
15848:
15849: returns the data handle
15850:
15851: =item *
15852:
15853: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
15854: and is a possible symb for the URL in $thisfn, and if is an encrypted
15855: resource that the user accessed using /enc/ returns a 1 on success, 0
15856: on failure, user must be in a course, as it assumes the existence of
15857: the course initial hash, and uses $env('request.course.id'}. The third
15858: arg is an optional reference to a scalar. If this arg is passed in the
15859: call to symbverify, it will be set to 1 if the symb has been set to be
15860: encrypted; otherwise it will be null.
15861:
15862: =item *
15863:
15864: symbclean($symb) : removes versions numbers from a symb, returns the
15865: cleaned symb
15866:
15867: =item *
15868:
15869: is_on_map($uri) : checks if the $uri is somewhere on the current
15870: course map, user must be in a course for it to work.
15871:
15872: =item *
15873:
15874: numval($salt) : return random seed value (addend for rndseed)
15875:
15876: =item *
15877:
15878: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
15879: a random seed, all arguments are optional, if they aren't sent it uses the
15880: environment to derive them. Note: if symb isn't sent and it can't get one
15881: from &symbread it will use the current time as its return value
15882:
15883: =item *
15884:
15885: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
15886: unfakeable, receipt
15887:
15888: =item *
15889:
15890: receipt() : API to ireceipt working off of env values; given out to users
15891:
15892: =item *
15893:
15894: countacc($url) : count the number of accesses to a given URL
15895:
15896: =item *
15897:
15898: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
15899:
15900: =item *
15901:
15902: checkin($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 $tcrsid)
15903:
15904: =item *
15905:
15906: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
15907:
15908: =item *
15909:
15910: devalidate($symb) : devalidate temporary spreadsheet calculations,
15911: forcing spreadsheet to reevaluate the resource scores next time.
15912:
15913: =item *
15914:
15915: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
15916: when viewing in course context.
15917:
15918: input: six args -- filename (decluttered), course number, course domain,
15919: url, symb (if registered) and group (if this is a
15920: group item -- e.g., bulletin board, group page etc.).
15921:
15922: output: array of five scalars --
15923: $cfile -- url for file editing if editable on current server
15924: $home -- homeserver of resource (i.e., for author if published,
15925: or course if uploaded.).
15926: $switchserver -- 1 if server switch will be needed.
15927: $forceedit -- 1 if icon/link should be to go to edit mode
15928: $forceview -- 1 if icon/link should be to go to view mode
15929:
15930: =item *
15931:
15932: is_course_upload($file,$cnum,$cdom)
15933:
15934: Used in course context to determine if current file was uploaded to
15935: the course (i.e., would be found in /userfiles/docs on the course's
15936: homeserver.
15937:
15938: input: 3 args -- filename (decluttered), course number and course domain.
15939: output: boolean -- 1 if file was uploaded.
15940:
15941: =back
15942:
15943: =head2 Storing/Retreiving Data
15944:
15945: =over 4
15946:
15947: =item *
15948:
15949: store($storehash,$symb,$namespace,$udom,$uname,$laststore) : stores hash
15950: permanently for this url; hashref needs to be given and should be a \%hashname;
15951: the remaining args aren't required and if they aren't passed or are '' they will
15952: be derived from the env (with the exception of $laststore, which is an
15953: optional arg used when a user's submission is stored in grading).
15954: $laststore is $version=$timestamp, where $version is the most recent version
15955: number retrieved for the corresponding $symb in the $namespace db file, and
15956: $timestamp is the timestamp for that transaction (UNIX time).
15957: $laststore is currently only passed when cstore() is called by
15958: structuretags::finalize_storage().
15959:
15960: =item *
15961:
15962: cstore($storehash,$symb,$namespace,$udom,$uname,$laststore) : same as store
15963: but uses critical subroutine
15964:
15965: =item *
15966:
15967: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
15968: all args are optional
15969:
15970: =item *
15971:
15972: dumpstore($namespace,$udom,$uname,$regexp,$range) :
15973: dumps the complete (or key matching regexp) namespace into a hash
15974: ($udom, $uname, $regexp, $range are optional) for a namespace that is
15975: normally &store()ed into
15976:
15977: $range should be either an integer '100' (give me the first 100
15978: matching records)
15979: or be two integers sperated by a - with no spaces
15980: '30-50' (give me the 30th through the 50th matching
15981: records)
15982:
15983:
15984: =item *
15985:
15986: putstore($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog) :
15987: replaces a &store() version of data with a replacement set of data
15988: for a particular resource in a namespace passed in the $storehash hash
15989: reference. If $tolog is true, the transaction is logged in the courselog
15990: with an action=PUTSTORE.
15991:
15992: =item *
15993:
15994: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
15995: works very similar to store/cstore, but all data is stored in a
15996: temporary location and can be reset using tmpreset, $storehash should
15997: be a hash reference, returns nothing on success
15998:
15999: =item *
16000:
16001: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
16002: similar to restore, but all data is stored in a temporary location and
16003: can be reset using tmpreset. Returns a hash of values on success,
16004: error string otherwise.
16005:
16006: =item *
16007:
16008: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
16009: deltes all keys for $symb form the temporary storage hash.
16010:
16011: =item *
16012:
16013: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
16014: reference filled in from namesp ($udom and $uname are optional)
16015:
16016: =item *
16017:
16018: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
16019: namesp ($udom and $uname are optional)
16020:
16021: =item *
16022:
16023: dump($namespace,$udom,$uname,$regexp,$range) :
16024: dumps the complete (or key matching regexp) namespace into a hash
16025: ($udom, $uname, $regexp, $range are optional)
16026:
16027: $range should be either an integer '100' (give me the first 100
16028: matching records)
16029: or be two integers sperated by a - with no spaces
16030: '30-50' (give me the 30th through the 50th matching
16031: records)
16032: =item *
16033:
16034: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
16035: $store can be a scalar, an array reference, or if the amount to be
16036: incremented is > 1, a hash reference.
16037:
16038: ($udom and $uname are optional)
16039:
16040: =item *
16041:
16042: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
16043: ($udom and $uname are optional)
16044:
16045: =item *
16046:
16047: cput($namespace,$storehash,$udom,$uname) : critical put
16048: ($udom and $uname are optional)
16049:
16050: =item *
16051:
16052: newput($namespace,$storehash,$udom,$uname) :
16053:
16054: Attempts to store the items in the $storehash, but only if they don't
16055: currently exist, if this succeeds you can be certain that you have
16056: successfully created a new key value pair in the $namespace db.
16057:
16058:
16059: Args:
16060: $namespace: name of database to store values to
16061: $storehash: hashref to store to the db
16062: $udom: (optional) domain of user containing the db
16063: $uname: (optional) name of user caontaining the db
16064:
16065: Returns:
16066: 'ok' -> succeeded in storing all keys of $storehash
16067: 'key_exists: <key>' -> failed to anything out of $storehash, as at
16068: least <key> already existed in the db (other
16069: requested keys may also already exist)
16070: 'error: <msg>' -> unable to tie the DB or other error occurred
16071: 'con_lost' -> unable to contact request server
16072: 'refused' -> action was not allowed by remote machine
16073:
16074:
16075: =item *
16076:
16077: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
16078: reference filled in from namesp (encrypts the return communication)
16079: ($udom and $uname are optional)
16080:
16081: =item *
16082:
16083: log($udom,$name,$home,$message) : write to permanent log for user; use
16084: critical subroutine
16085:
16086: =item *
16087:
16088: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
16089: array reference filled in from namespace found in domain level on either
16090: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
16091:
16092: =item *
16093:
16094: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
16095: domain level either on specified domain server ($uhome) or primary domain
16096: server ($udom and $uhome are optional)
16097:
16098: =item *
16099:
16100: get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults
16101: for: authentication, language, quotas, timezone, date locale, and portal URL in
16102: the target domain.
16103:
16104: May also include additional key => value pairs for the following groups:
16105:
16106: =over
16107:
16108: =item
16109: disk quotas (MB allocated by default to portfolios and authoring spaces).
16110:
16111: =over
16112:
16113: =item defaultquota, authorquota
16114:
16115: =back
16116:
16117: =item
16118: tools (availability of aboutme page, blog, webDAV access for authoring spaces,
16119: portfolio for users).
16120:
16121: =over
16122:
16123: =item
16124: aboutme, blog, webdav, portfolio
16125:
16126: =back
16127:
16128: =item
16129: requestcourses: ability to request courses, and how requests are processed.
16130:
16131: =over
16132:
16133: =item
16134: official, unofficial, community, textbook, placement
16135:
16136: =back
16137:
16138: =item
16139: inststatus: types of institutional affiliation, and order in which they are displayed.
16140:
16141: =over
16142:
16143: =item
16144: inststatustypes, inststatusorder, inststatusguest
16145:
16146: =back
16147:
16148: =item
16149: coursedefaults: can PDF forms can be created, default credits for courses, default quotas (MB)
16150: for course's uploaded content.
16151:
16152: =over
16153:
16154: =item
16155: canuse_pdfforms, officialcredits, unofficialcredits, textbookcredits, officialquota, unofficialquota,
16156: communityquota, textbookquota, placementquota
16157:
16158: =back
16159:
16160: =item
16161: usersessions: set options for hosting of your users in other domains, and hosting of users from other domains
16162: on your servers.
16163:
16164: =over
16165:
16166: =item
16167: remotesessions, hostedsessions
16168:
16169: =back
16170:
16171: =back
16172:
16173: In cases where a domain coordinator has never used the "Set Domain Configuration"
16174: utility to create a configuration.db file on a domain's primary library server
16175: only the following domain defaults: auth_def, auth_arg_def, lang_def
16176: -- corresponding values are authentication type (internal, krb4, krb5,
16177: or localauth), initial password or a kerberos realm, language (e.g., en-us) --
16178: will be available. Values are retrieved from cache (if current), unless the
16179: optional $ignore_cache arg is true, or from domain's configuration.db (if available),
16180: or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab.
16181:
16182: Typical usage:
16183:
16184: %domdefaults = &get_domain_defaults($target_domain);
16185:
16186: =back
16187:
16188: =head2 Network Status Functions
16189:
16190: =over 4
16191:
16192: =item *
16193:
16194: dirlist() : return directory list based on URI (first arg).
16195:
16196: Inputs: 1 required, 5 optional.
16197:
16198: =over
16199:
16200: =item
16201: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
16202:
16203: =item
16204: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
16205:
16206: =item
16207: $username - username of user/course to be listed. Extracted from $uri if absent.
16208:
16209: =item
16210: $getpropath - boolean: 1 if prepend path using &propath().
16211:
16212: =item
16213: $getuserdir - boolean: 1 if prepend path for "userfiles".
16214:
16215: =item
16216: $alternateRoot - path to prepend in place of path from $uri.
16217:
16218: =back
16219:
16220: Returns: Array of up to two items.
16221:
16222: =over
16223:
16224: a reference to an array of files/subdirectories
16225:
16226: =over
16227:
16228: Each element in the array of files/subdirectories is a & separated list of
16229: item name and the result of running stat on the item. If dirlist was requested
16230: for a file instead of a directory, the item name will be ''. For a directory
16231: listing, if the item is a metadata file, the element will end &N&M
16232: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
16233: default copyright set (1).
16234:
16235: =back
16236:
16237: a scalar containing error condition (if encountered).
16238:
16239: =over
16240:
16241: =item
16242: no_host (no homeserver identified for $username:$domain).
16243:
16244: =item
16245: no_such_host (server contacted for listing not identified as valid host).
16246:
16247: =item
16248: con_lost (connection to remote server failed).
16249:
16250: =item
16251: refused (invalid $username:$domain received on lond side).
16252:
16253: =item
16254: no_such_dir (directory at specified path on lond side does not exist).
16255:
16256: =item
16257: empty (directory at specified path on lond side is empty).
16258:
16259: =over
16260:
16261: This is currently not encountered because the &ls3, &ls2,
16262: &ls (_handler) routines on the lond side do not filter out
16263: . and .. from a directory listing.
16264:
16265: =back
16266:
16267: =back
16268:
16269: =back
16270:
16271: =item *
16272:
16273: spareserver() : find server with least workload from spare.tab
16274:
16275:
16276: =item *
16277:
16278: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
16279: if there is no corresponding loncapa host.
16280:
16281: =back
16282:
16283:
16284: =head2 Apache Request
16285:
16286: =over 4
16287:
16288: =item *
16289:
16290: ssi($url,%hash) : server side include, does a complete request cycle on url to
16291: localhost, posts hash
16292:
16293: =back
16294:
16295: =head2 Data to String to Data
16296:
16297: =over 4
16298:
16299: =item *
16300:
16301: hash2str(%hash) : convert a hash into a string complete with escaping and '='
16302: and '&' separators, supports elements that are arrayrefs and hashrefs
16303:
16304: =item *
16305:
16306: hashref2str($hashref) : convert a hashref into a string complete with
16307: escaping and '=' and '&' separators, supports elements that are
16308: arrayrefs and hashrefs
16309:
16310: =item *
16311:
16312: arrayref2str($arrayref) : convert an arrayref into a string complete
16313: with escaping and '&' separators, supports elements that are arrayrefs
16314: and hashrefs
16315:
16316: =item *
16317:
16318: str2hash($string) : convert string to hash using unescaping and
16319: splitting on '=' and '&', supports elements that are arrayrefs and
16320: hashrefs
16321:
16322: =item *
16323:
16324: str2array($string) : convert string to hash using unescaping and
16325: splitting on '&', supports elements that are arrayrefs and hashrefs
16326:
16327: =back
16328:
16329: =head2 Logging Routines
16330:
16331:
16332: These routines allow one to make log messages in the lonnet.log and
16333: lonnet.perm logfiles.
16334:
16335: =over 4
16336:
16337: =item *
16338:
16339: logtouch() : make sure the logfile, lonnet.log, exists
16340:
16341: =item *
16342:
16343: logthis() : append message to the normal lonnet.log file, it gets
16344: preiodically rolled over and deleted.
16345:
16346: =item *
16347:
16348: logperm() : append a permanent message to lonnet.perm.log, this log
16349: file never gets deleted by any automated portion of the system, only
16350: messages of critical importance should go in here.
16351:
16352:
16353: =back
16354:
16355: =head2 General File Helper Routines
16356:
16357: =over 4
16358:
16359: =item *
16360:
16361: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
16362: (a) files in /uploaded
16363: (i) If a local copy of the file exists -
16364: compares modification date of local copy with last-modified date for
16365: definitive version stored on home server for course. If local copy is
16366: stale, requests a new version from the home server and stores it.
16367: If the original has been removed from the home server, then local copy
16368: is unlinked.
16369: (ii) If local copy does not exist -
16370: requests the file from the home server and stores it.
16371:
16372: If $caller is 'uploadrep':
16373: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
16374: for request for files originally uploaded via DOCS.
16375: - returns 'ok' if fresh local copy now available, -1 otherwise.
16376:
16377: Otherwise:
16378: This indicates a call from the content generation phase of the request.
16379: - returns the entire contents of the file or -1.
16380:
16381: (b) files in /res
16382: - returns the entire contents of a file or -1;
16383: it properly subscribes to and replicates the file if neccessary.
16384:
16385:
16386: =item *
16387:
16388: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
16389: reference
16390:
16391: returns either a stat() list of data about the file or an empty list
16392: if the file doesn't exist or couldn't find out about it (connection
16393: problems or user unknown)
16394:
16395: =item *
16396:
16397: filelocation($dir,$file) : returns file system location of a file
16398: based on URI; meant to be "fairly clean" absolute reference, $dir is a
16399: directory that relative $file lookups are to looked in ($dir of /a/dir
16400: and a file of ../bob will become /a/bob)
16401:
16402: =item *
16403:
16404: hreflocation($dir,$file) : returns file system location or a URL; same as
16405: filelocation except for hrefs
16406:
16407: =item *
16408:
16409: declutter() : declutters URLs -- remove beginning slashes, 'res' etc.
16410: also removes beginning /home/httpd/html unless /priv/ follows it.
16411:
16412: =back
16413:
16414: =head2 Usererfile file routines (/uploaded*)
16415:
16416: =over 4
16417:
16418: =item *
16419:
16420: userfileupload(): main rotine for putting a file in a user or course's
16421: filespace, arguments are,
16422:
16423: formname - required - this is the name of the element in $env where the
16424: filename, and the contents of the file to create/modifed exist
16425: the filename is in $env{'form.'.$formname.'.filename'} and the
16426: contents of the file is located in $env{'form.'.$formname}
16427: context - if coursedoc, store the file in the course of the active role
16428: of the current user;
16429: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
16430: if 'canceloverwrite': delete file in tmp/overwrites directory
16431: subdir - required - subdirectory to put the file in under ../userfiles/
16432: if undefined, it will be placed in "unknown"
16433:
16434: (This routine calls clean_filename() to remove any dangerous
16435: characters from the filename, and then calls finuserfileupload() to
16436: complete the transaction)
16437:
16438: returns either the url of the uploaded file (/uploaded/....) if successful
16439: and /adm/notfound.html if unsuccessful
16440:
16441: =item *
16442:
16443: clean_filename(): routine for cleaing a filename up for storage in
16444: userfile space, argument is:
16445:
16446: filename - proposed filename
16447:
16448: returns: the new clean filename
16449:
16450: =item *
16451:
16452: finishuserfileupload(): routine that creates and sends the file to
16453: userspace, probably shouldn't be called directly
16454:
16455: docuname: username or courseid of destination for the file
16456: docudom: domain of user/course of destination for the file
16457: formname: same as for userfileupload()
16458: fname: filename (including subdirectories) for the file
16459: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
16460: if hashref, and context is scantron, will convert csv format to standard format
16461: allfiles: reference to hash used to store objects found by parser
16462: codebase: reference to hash used for codebases of java objects found by parser
16463: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
16464: thumbheight: height (pixels) of thumbnail to be created for uploaded image
16465: resizewidth: width to be used to resize image using resizeImage from ImageMagick
16466: resizeheight: height to be used to resize image using resizeImage from ImageMagick
16467: context: if 'overwrite', will move the uploaded file from its temporary location to
16468: userfiles to facilitate overwriting a previously uploaded file with same name.
16469: mimetype: reference to scalar to accommodate mime type determined
16470: from File::MMagic if $parser = parse.
16471:
16472: returns either the url of the uploaded file (/uploaded/....) if successful
16473: and /adm/notfound.html if unsuccessful (or an error message if context
16474: was 'overwrite').
16475:
16476:
16477: =item *
16478:
16479: renameuserfile(): renames an existing userfile to a new name
16480:
16481: Args:
16482: docuname: username or courseid of destination for the file
16483: docudom: domain of user/course of destination for the file
16484: old: current file name (including any subdirs under userfiles)
16485: new: desired file name (including any subdirs under userfiles)
16486:
16487: =item *
16488:
16489: mkdiruserfile(): creates a directory is a userfiles dir
16490:
16491: Args:
16492: docuname: username or courseid of destination for the file
16493: docudom: domain of user/course of destination for the file
16494: dir: dir to create (including any subdirs under userfiles)
16495:
16496: =item *
16497:
16498: removeuserfile(): removes a file that exists in userfiles
16499:
16500: Args:
16501: docuname: username or courseid of destination for the file
16502: docudom: domain of user/course of destination for the file
16503: fname: filname to delete (including any subdirs under userfiles)
16504:
16505: =item *
16506:
16507: removeuploadedurl(): convience function for removeuserfile()
16508:
16509: Args:
16510: url: a full /uploaded/... url to delete
16511:
16512: =item *
16513:
16514: get_portfile_permissions():
16515: Args:
16516: domain: domain of user or course contain the portfolio files
16517: user: name of user or num of course contain the portfolio files
16518: Returns:
16519: hashref of a dump of the proper file_permissions.db
16520:
16521:
16522: =item *
16523:
16524: get_access_controls():
16525:
16526: Args:
16527: current_permissions: the hash ref returned from get_portfile_permissions()
16528: group: (optional) the group you want the files associated with
16529: file: (optional) the file you want access info on
16530:
16531: Returns:
16532: a hash (keys are file names) of hashes containing
16533: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
16534: values are XML containing access control settings (see below)
16535:
16536: Internal notes:
16537:
16538: access controls are stored in file_permissions.db as key=value pairs.
16539: key -> path to file/file_name\0uniqueID:scope_end_start
16540: where scope -> public,guest,course,group,domains or users.
16541: end -> UNIX time for end of access (0 -> no end date)
16542: start -> UNIX time for start of access
16543:
16544: value -> XML description of access control
16545: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
16546: <start></start>
16547: <end></end>
16548:
16549: <password></password> for scope type = guest
16550:
16551: <domain></domain> for scope type = course or group
16552: <number></number>
16553: <roles id="">
16554: <role></role>
16555: <access></access>
16556: <section></section>
16557: <group></group>
16558: </roles>
16559:
16560: <dom></dom> for scope type = domains
16561:
16562: <users> for scope type = users
16563: <user>
16564: <uname></uname>
16565: <udom></udom>
16566: </user>
16567: </users>
16568: </scope>
16569:
16570: Access data is also aggregated for each file in an additional key=value pair:
16571: key -> path to file/file_name\0accesscontrol
16572: value -> reference to hash
16573: hash contains key = value pairs
16574: where key = uniqueID:scope_end_start
16575: value = UNIX time record was last updated
16576:
16577: Used to improve speed of look-ups of access controls for each file.
16578:
16579: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
16580:
16581: =item *
16582:
16583: modify_access_controls():
16584:
16585: Modifies access controls for a portfolio file
16586: Args
16587: 1. file name
16588: 2. reference to hash of required changes,
16589: 3. domain
16590: 4. username
16591: where domain,username are the domain of the portfolio owner
16592: (either a user or a course)
16593:
16594: Returns:
16595: 1. result of additions or updates ('ok' or 'error', with error message).
16596: 2. result of deletions ('ok' or 'error', with error message).
16597: 3. reference to hash of any new or updated access controls.
16598: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
16599: key = integer (inbound ID)
16600: value = uniqueID
16601:
16602: =item *
16603:
16604: get_timebased_id():
16605:
16606: Attempts to get a unique timestamp-based suffix for use with items added to a
16607: course via the Course Editor (e.g., folders, composite pages,
16608: group bulletin boards).
16609:
16610: Args: (first three required; six others optional)
16611:
16612: 1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
16613: docssequence, or name of group
16614:
16615: 2. keyid (alphanumeric): name of temporary locking key in hash,
16616: e.g., num, boardids
16617:
16618: 3. namespace: name of gdbm file used to store suffixes already assigned;
16619: file will be named nohist_namespace.db
16620:
16621: 4. cdom: domain of course; default is current course domain from %env
16622:
16623: 5. cnum: course number; default is current course number from %env
16624:
16625: 6. idtype: set to concat if an additional digit is to be appended to the
16626: unix timestamp to form the suffix, if the plain timestamp is already
16627: in use. Default is to not do this, but simply increment the unix
16628: timestamp by 1 until a unique key is obtained.
16629:
16630: 7. who: holder of locking key; defaults to user:domain for user.
16631:
16632: 8. locktries: number of attempts to obtain a lock (sleep of 1s before
16633: retrying); default is 3.
16634:
16635: 9. maxtries: number of attempts to obtain a unique suffix; default is 20.
16636:
16637: Returns:
16638:
16639: 1. suffix obtained (numeric)
16640:
16641: 2. result of deleting locking key (ok if deleted, or lock never obtained)
16642:
16643: 3. error: contains (localized) error message if an error occurred.
16644:
16645:
16646: =back
16647:
16648: =head2 HTTP Helper Routines
16649:
16650: =over 4
16651:
16652: =item *
16653:
16654: escape() : unpack non-word characters into CGI-compatible hex codes
16655:
16656: =item *
16657:
16658: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
16659:
16660: =back
16661:
16662: =head1 PRIVATE SUBROUTINES
16663:
16664: =head2 Underlying communication routines (Shouldn't call)
16665:
16666: =over 4
16667:
16668: =item *
16669:
16670: subreply() : tries to pass a message to lonc, returns con_lost if incapable
16671:
16672: =item *
16673:
16674: reply() : uses subreply to send a message to remote machine, logs all failures
16675:
16676: =item *
16677:
16678: critical() : passes a critical message to another server; if cannot
16679: get through then place message in connection buffer directory and
16680: returns con_delayed, if incapable of saving message, returns
16681: con_failed
16682:
16683: =item *
16684:
16685: reconlonc() : tries to reconnect lonc client processes.
16686:
16687: =back
16688:
16689: =head2 Resource Access Logging
16690:
16691: =over 4
16692:
16693: =item *
16694:
16695: flushcourselogs() : flush (save) buffer logs and access logs
16696:
16697: =item *
16698:
16699: courselog($what) : save message for course in hash
16700:
16701: =item *
16702:
16703: courseacclog($what) : save message for course using &courselog(). Perform
16704: special processing for specific resource types (problems, exams, quizzes, etc).
16705:
16706: =item *
16707:
16708: goodbye() : flush course logs and log shutting down; it is called in srm.conf
16709: as a PerlChildExitHandler
16710:
16711: =back
16712:
16713: =head2 Other
16714:
16715: =over 4
16716:
16717: =item *
16718:
16719: symblist($mapname,%newhash) : update symbolic storage links
16720:
16721: =back
16722:
16723: =cut
16724:
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