1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1445 2021/04/09 00:57:31 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 Net::CIDR;
100: use LONCAPA qw(:DEFAULT :match);
101: use LONCAPA::Configuration;
102: use LONCAPA::lonmetadata;
103: use LONCAPA::Lond;
104: use LONCAPA::LWPReq;
105: use LONCAPA::transliterate;
106:
107: use File::Copy;
108:
109: my $readit;
110: my $max_connection_retries = 20; # Or some such value.
111:
112: require Exporter;
113:
114: our @ISA = qw (Exporter);
115: our @EXPORT = qw(%env);
116:
117:
118: # ------------------------------------ Logging (parameters, docs, slots, roles)
119: {
120: my $logid;
121: sub write_log {
122: my ($context,$hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
123: if ($context eq 'course') {
124: if (($cnum eq '') || ($cdom eq '')) {
125: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
126: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
127: }
128: }
129: $logid ++;
130: my $now = time();
131: my $id=$now.'00000'.$$.'00000'.$logid;
132: my $ip = &get_requestor_ip();
133: my $logentry = {
134: $id => {
135: 'exe_uname' => $env{'user.name'},
136: 'exe_udom' => $env{'user.domain'},
137: 'exe_time' => $now,
138: 'exe_ip' => $ip,
139: 'delflag' => $delflag,
140: 'logentry' => $storehash,
141: 'uname' => $uname,
142: 'udom' => $udom,
143: }
144: };
145: return &put('nohist_'.$hash_name,$logentry,$cdom,$cnum);
146: }
147: }
148:
149: sub logtouch {
150: my $execdir=$perlvar{'lonDaemons'};
151: unless (-e "$execdir/logs/lonnet.log") {
152: open(my $fh,">>","$execdir/logs/lonnet.log");
153: close $fh;
154: }
155: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
156: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
157: }
158:
159: sub logthis {
160: my $message=shift;
161: my $execdir=$perlvar{'lonDaemons'};
162: my $now=time;
163: my $local=localtime($now);
164: if (open(my $fh,">>","$execdir/logs/lonnet.log")) {
165: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
166: print $fh $logstring;
167: close($fh);
168: }
169: return 1;
170: }
171:
172: sub logperm {
173: my $message=shift;
174: my $execdir=$perlvar{'lonDaemons'};
175: my $now=time;
176: my $local=localtime($now);
177: if (open(my $fh,">>","$execdir/logs/lonnet.perm.log")) {
178: print $fh "$now:$message:$local\n";
179: close($fh);
180: }
181: return 1;
182: }
183:
184: sub create_connection {
185: my ($hostname,$lonid) = @_;
186: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
187: Type => SOCK_STREAM,
188: Timeout => 10);
189: return 0 if (!$client);
190: print $client (join(':',$hostname,$lonid,&machine_ids($hostname),$loncaparevs{$lonid})."\n");
191: my $result = <$client>;
192: chomp($result);
193: return 1 if ($result eq 'done');
194: return 0;
195: }
196:
197: sub get_server_timezone {
198: my ($cnum,$cdom) = @_;
199: my $home=&homeserver($cnum,$cdom);
200: if ($home ne 'no_host') {
201: my $cachetime = 24*3600;
202: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
203: if (defined($cached)) {
204: return $timezone;
205: } else {
206: my $timezone = &reply('servertimezone',$home);
207: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
208: }
209: }
210: }
211:
212: sub get_server_distarch {
213: my ($lonhost,$ignore_cache) = @_;
214: if (defined($lonhost)) {
215: if (!defined(&hostname($lonhost))) {
216: return;
217: }
218: my $cachetime = 12*3600;
219: if (!$ignore_cache) {
220: my ($distarch,$cached)=&is_cached_new('serverdistarch',$lonhost);
221: if (defined($cached)) {
222: return $distarch;
223: }
224: }
225: my $rep = &reply('serverdistarch',$lonhost);
226: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
227: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
228: $rep eq '') {
229: return &do_cache_new('serverdistarch',$lonhost,$rep,$cachetime);
230: }
231: }
232: return;
233: }
234:
235: sub get_servercerts_info {
236: my ($lonhost,$hostname,$context) = @_;
237: return if ($lonhost eq '');
238: if ($hostname eq '') {
239: $hostname = &hostname($lonhost);
240: }
241: return if ($hostname eq '');
242: my ($rep,$uselocal);
243: if ($context eq 'install') {
244: $uselocal = 1;
245: } elsif (grep { $_ eq $lonhost } ¤t_machine_ids()) {
246: $uselocal = 1;
247: }
248: if (($context ne 'cgi') && ($context ne 'install') && ($uselocal)) {
249: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
250: if ($distro eq '') {
251: $uselocal = 0;
252: } elsif ($distro =~ /^(?:centos|redhat|scientific)(\d+)$/) {
253: if ($1 < 6) {
254: $uselocal = 0;
255: }
256: } elsif ($distro =~ /^(?:sles)(\d+)$/) {
257: if ($1 < 12) {
258: $uselocal = 0;
259: }
260: }
261: }
262: if ($uselocal) {
263: $rep = LONCAPA::Lond::server_certs(\%perlvar,$lonhost,$hostname);
264: } else {
265: $rep=&reply('servercerts',$lonhost);
266: }
267: my ($result,%returnhash);
268: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
269: ($rep eq 'unknown_cmd')) {
270: $result = $rep;
271: } else {
272: $result = 'ok';
273: my @pairs=split(/\&/,$rep);
274: foreach my $item (@pairs) {
275: my ($key,$value)=split(/=/,$item,2);
276: my $what = &unescape($key);
277: $returnhash{$what}=&thaw_unescape($value);
278: }
279: }
280: return ($result,\%returnhash);
281: }
282:
283: sub get_server_loncaparev {
284: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
285: if (defined($lonhost)) {
286: if (!defined(&hostname($lonhost))) {
287: undef($lonhost);
288: }
289: }
290: if (!defined($lonhost)) {
291: if (defined(&domain($dom,'primary'))) {
292: $lonhost=&domain($dom,'primary');
293: if ($lonhost eq 'no_host') {
294: undef($lonhost);
295: }
296: }
297: }
298: if (defined($lonhost)) {
299: my $cachetime = 12*3600;
300: if (!$ignore_cache) {
301: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
302: if (defined($cached)) {
303: return $loncaparev;
304: }
305: }
306: my ($answer,$loncaparev);
307: my @ids=¤t_machine_ids();
308: if (grep(/^\Q$lonhost\E$/,@ids)) {
309: $answer = $perlvar{'lonVersion'};
310: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
311: $loncaparev = $1;
312: }
313: } else {
314: $answer = &reply('serverloncaparev',$lonhost);
315: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
316: if ($caller eq 'loncron') {
317: my $hostname = &hostname($lonhost);
318: my $protocol = $protocol{$lonhost};
319: $protocol = 'http' if ($protocol ne 'https');
320: my $url = $protocol.'://'.$hostname.'/adm/about.html';
321: my $request=new HTTP::Request('GET',$url);
322: my $response=&LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,4,1);
323: unless ($response->is_error()) {
324: my $content = $response->content;
325: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
326: $loncaparev = $1;
327: }
328: }
329: } else {
330: $loncaparev = $loncaparevs{$lonhost};
331: }
332: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
333: $loncaparev = $1;
334: }
335: }
336: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
337: }
338: }
339:
340: sub get_server_homeID {
341: my ($hostname,$ignore_cache,$caller) = @_;
342: unless ($ignore_cache) {
343: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
344: if (defined($cached)) {
345: return $serverhomeID;
346: }
347: }
348: my $cachetime = 12*3600;
349: my $serverhomeID;
350: if ($caller eq 'loncron') {
351: my @machine_ids = &machine_ids($hostname);
352: foreach my $id (@machine_ids) {
353: my $response = &reply('serverhomeID',$id);
354: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
355: $serverhomeID = $response;
356: last;
357: }
358: }
359: if ($serverhomeID eq '') {
360: $serverhomeID = $machine_ids[-1];
361: }
362: } else {
363: $serverhomeID = $serverhomeIDs{$hostname};
364: }
365: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
366: }
367:
368: sub get_remote_globals {
369: my ($lonhost,$whathash,$ignore_cache) = @_;
370: my ($result,%returnhash,%whatneeded);
371: if (ref($whathash) eq 'HASH') {
372: foreach my $what (sort(keys(%{$whathash}))) {
373: my $hashid = $lonhost.'-'.$what;
374: my ($response,$cached);
375: unless ($ignore_cache) {
376: ($response,$cached)=&is_cached_new('lonnetglobal',$hashid);
377: }
378: if (defined($cached)) {
379: $returnhash{$what} = $response;
380: } else {
381: $whatneeded{$what} = 1;
382: }
383: }
384: if (keys(%whatneeded) == 0) {
385: $result = 'ok';
386: } else {
387: my $requested = &freeze_escape(\%whatneeded);
388: my $rep=&reply('readlonnetglobal:'.$requested,$lonhost);
389: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
390: ($rep eq 'unknown_cmd')) {
391: $result = $rep;
392: } else {
393: $result = 'ok';
394: my @pairs=split(/\&/,$rep);
395: foreach my $item (@pairs) {
396: my ($key,$value)=split(/=/,$item,2);
397: my $what = &unescape($key);
398: my $hashid = $lonhost.'-'.$what;
399: $returnhash{$what}=&thaw_unescape($value);
400: &do_cache_new('lonnetglobal',$hashid,$returnhash{$what},600);
401: }
402: }
403: }
404: }
405: return ($result,\%returnhash);
406: }
407:
408: sub remote_devalidate_cache {
409: my ($lonhost,$cachekeys) = @_;
410: my $items;
411: return unless (ref($cachekeys) eq 'ARRAY');
412: my $cachestr = join('&',@{$cachekeys});
413: my $response = &reply('devalidatecache:'.&escape($cachestr),$lonhost);
414: return $response;
415: }
416:
417: # -------------------------------------------------- Non-critical communication
418: sub subreply {
419: my ($cmd,$server)=@_;
420: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
421: #
422: # With loncnew process trimming, there's a timing hole between lonc server
423: # process exit and the master server picking up the listen on the AF_UNIX
424: # socket. In that time interval, a lock file will exist:
425:
426: my $lockfile=$peerfile.".lock";
427: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
428: sleep(0.1);
429: }
430: # At this point, either a loncnew parent is listening or an old lonc
431: # or loncnew child is listening so we can connect or everything's dead.
432: #
433: # We'll give the connection a few tries before abandoning it. If
434: # connection is not possible, we'll con_lost back to the client.
435: #
436: my $client;
437: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
438: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
439: Type => SOCK_STREAM,
440: Timeout => 10);
441: if ($client) {
442: last; # Connected!
443: } else {
444: &create_connection(&hostname($server),$server);
445: }
446: sleep(0.1); # Try again later if failed connection.
447: }
448: my $answer;
449: if ($client) {
450: print $client "sethost:$server:$cmd\n";
451: $answer=<$client>;
452: if (!$answer) { $answer="con_lost"; }
453: chomp($answer);
454: } else {
455: $answer = 'con_lost'; # Failed connection.
456: }
457: return $answer;
458: }
459:
460: sub reply {
461: my ($cmd,$server)=@_;
462: unless (defined(&hostname($server))) { return 'no_such_host'; }
463: my $answer=subreply($cmd,$server);
464: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
465: my $logged = $cmd;
466: if ($cmd =~ /^encrypt:([^:]+):/) {
467: my $subcmd = $1;
468: if (($subcmd eq 'auth') || ($subcmd eq 'passwd') ||
469: ($subcmd eq 'changeuserauth') || ($subcmd eq 'makeuser') ||
470: ($subcmd eq 'putdom') || ($subcmd eq 'autoexportgrades')) {
471: (undef,undef,my @rest) = split(/:/,$cmd);
472: if (($subcmd eq 'auth') || ($subcmd eq 'putdom')) {
473: splice(@rest,2,1,'Hidden');
474: } elsif ($subcmd eq 'passwd') {
475: splice(@rest,2,2,('Hidden','Hidden'));
476: } elsif (($subcmd eq 'changeuserauth') || ($subcmd eq 'makeuser') ||
477: ($subcmd eq 'autoexportgrades')) {
478: splice(@rest,3,1,'Hidden');
479: }
480: $logged = join(':',('encrypt:'.$subcmd,@rest));
481: }
482: }
483: &logthis("<font color=\"blue\">WARNING:".
484: " $logged to $server returned $answer</font>");
485: }
486: return $answer;
487: }
488:
489: # ----------------------------------------------------------- Send USR1 to lonc
490:
491: sub reconlonc {
492: my ($lonid) = @_;
493: if ($lonid) {
494: my $hostname = &hostname($lonid);
495: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
496: if ($hostname && -e $peerfile) {
497: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
498: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
499: Type => SOCK_STREAM,
500: Timeout => 10);
501: if ($client) {
502: print $client ("reset_retries\n");
503: my $answer=<$client>;
504: #reset just this one.
505: }
506: }
507: return;
508: }
509:
510: &logthis("Trying to reconnect lonc");
511: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
512: if (open(my $fh,"<",$loncfile)) {
513: my $loncpid=<$fh>;
514: chomp($loncpid);
515: if (kill 0 => $loncpid) {
516: &logthis("lonc at pid $loncpid responding, sending USR1");
517: kill USR1 => $loncpid;
518: sleep 1;
519: } else {
520: &logthis(
521: "<font color=\"blue\">WARNING:".
522: " lonc at pid $loncpid not responding, giving up</font>");
523: }
524: } else {
525: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
526: }
527: }
528:
529: # ------------------------------------------------------ Critical communication
530:
531: sub critical {
532: my ($cmd,$server)=@_;
533: unless (&hostname($server)) {
534: &logthis("<font color=\"blue\">WARNING:".
535: " Critical message to unknown server ($server)</font>");
536: return 'no_such_host';
537: }
538: my $answer=reply($cmd,$server);
539: if ($answer eq 'con_lost') {
540: &reconlonc($server);
541: my $answer=reply($cmd,$server);
542: if ($answer eq 'con_lost') {
543: my $now=time;
544: my $middlename=$cmd;
545: $middlename=substr($middlename,0,16);
546: $middlename=~s/\W//g;
547: my $dfilename=
548: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
549: $dumpcount++;
550: {
551: my $dfh;
552: if (open($dfh,">",$dfilename)) {
553: print $dfh "$cmd\n";
554: close($dfh);
555: }
556: }
557: sleep 1;
558: my $wcmd='';
559: {
560: my $dfh;
561: if (open($dfh,"<",$dfilename)) {
562: $wcmd=<$dfh>;
563: close($dfh);
564: }
565: }
566: chomp($wcmd);
567: if ($wcmd eq $cmd) {
568: &logthis("<font color=\"blue\">WARNING: ".
569: "Connection buffer $dfilename: $cmd</font>");
570: &logperm("D:$server:$cmd");
571: return 'con_delayed';
572: } else {
573: &logthis("<font color=\"red\">CRITICAL:"
574: ." Critical connection failed: $server $cmd</font>");
575: &logperm("F:$server:$cmd");
576: return 'con_failed';
577: }
578: }
579: }
580: return $answer;
581: }
582:
583: # ------------------------------------------- check if return value is an error
584:
585: sub error {
586: my ($result) = @_;
587: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
588: if ($2 == 2) { return undef; }
589: return $1;
590: }
591: return undef;
592: }
593:
594: sub convert_and_load_session_env {
595: my ($lonidsdir,$handle)=@_;
596: my @profile;
597: {
598: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
599: if (!$opened) {
600: return 0;
601: }
602: flock($idf,LOCK_SH);
603: @profile=<$idf>;
604: close($idf);
605: }
606: my %temp_env;
607: foreach my $line (@profile) {
608: if ($line !~ m/=/) {
609: return 0;
610: }
611: chomp($line);
612: my ($envname,$envvalue)=split(/=/,$line,2);
613: $temp_env{&unescape($envname)} = &unescape($envvalue);
614: }
615: unlink("$lonidsdir/$handle.id");
616: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
617: 0640)) {
618: %disk_env = %temp_env;
619: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
620: untie(%disk_env);
621: }
622: return 1;
623: }
624:
625: # ------------------------------------------- Transfer profile into environment
626: my $env_loaded;
627: sub transfer_profile_to_env {
628: my ($lonidsdir,$handle,$force_transfer) = @_;
629: if (!$force_transfer && $env_loaded) { return; }
630:
631: if (!defined($lonidsdir)) {
632: $lonidsdir = $perlvar{'lonIDsDir'};
633: }
634: if (!defined($handle)) {
635: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
636: }
637:
638: my $convert;
639: {
640: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
641: if (!$opened) {
642: return;
643: }
644: flock($idf,LOCK_SH);
645: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
646: &GDBM_READER(),0640)) {
647: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
648: untie(%disk_env);
649: } else {
650: $convert = 1;
651: }
652: }
653: if ($convert) {
654: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
655: &logthis("Failed to load session, or convert session.");
656: }
657: }
658:
659: my %remove;
660: while ( my $envname = each(%env) ) {
661: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
662: if ($time < time-300) {
663: $remove{$key}++;
664: }
665: }
666: }
667:
668: $env{'user.environment'} = "$lonidsdir/$handle.id";
669: $env_loaded=1;
670: foreach my $expired_key (keys(%remove)) {
671: &delenv($expired_key);
672: }
673: }
674:
675: # ---------------------------------------------------- Check for valid session
676: sub check_for_valid_session {
677: my ($r,$name,$userhashref,$domref) = @_;
678: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
679: my ($lonidsdir,$linkname,$pubname,$secure,$lonid);
680: if ($name eq 'lonDAV') {
681: $lonidsdir=$r->dir_config('lonDAVsessDir');
682: } else {
683: $lonidsdir=$r->dir_config('lonIDsDir');
684: if ($name eq '') {
685: $name = 'lonID';
686: }
687: }
688: if ($name eq 'lonID') {
689: $secure = 'lonSID';
690: $linkname = 'lonLinkID';
691: $pubname = 'lonPubID';
692: if (exists($cookies{$secure})) {
693: $lonid=$cookies{$secure};
694: } elsif (exists($cookies{$name})) {
695: $lonid=$cookies{$name};
696: } elsif ((exists($cookies{$linkname})) && ($ENV{'SERVER_PORT'} != 443)) {
697: $lonid=$cookies{$linkname};
698: } elsif (exists($cookies{$pubname})) {
699: $lonid=$cookies{$pubname};
700: }
701: } else {
702: $lonid=$cookies{$name};
703: }
704: return undef if (!$lonid);
705:
706: my $handle=&LONCAPA::clean_handle($lonid->value);
707: if (-l "$lonidsdir/$handle.id") {
708: my $link = readlink("$lonidsdir/$handle.id");
709: if ((-e $link) && ($link =~ m{^\Q$lonidsdir\E/(.+)\.id$})) {
710: $handle = $1;
711: }
712: }
713: if (!-e "$lonidsdir/$handle.id") {
714: if ((ref($domref)) && ($name eq 'lonID') &&
715: ($handle =~ /^($match_username)\_\d+\_($match_domain)\_(.+)$/)) {
716: my ($possuname,$possudom,$possuhome) = ($1,$2,$3);
717: if ((&domain($possudom) ne '') && (&homeserver($possuname,$possudom) eq $possuhome)) {
718: $$domref = $possudom;
719: }
720: }
721: return undef;
722: }
723:
724: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
725: return undef if (!$opened);
726:
727: flock($idf,LOCK_SH);
728: my %disk_env;
729: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
730: &GDBM_READER(),0640)) {
731: return undef;
732: }
733:
734: if (!defined($disk_env{'user.name'})
735: || !defined($disk_env{'user.domain'})) {
736: untie(%disk_env);
737: return undef;
738: }
739:
740: if (ref($userhashref) eq 'HASH') {
741: $userhashref->{'name'} = $disk_env{'user.name'};
742: $userhashref->{'domain'} = $disk_env{'user.domain'};
743: $userhashref->{'lti'} = $disk_env{'request.lti.login'};
744: if ($userhashref->{'lti'}) {
745: $userhashref->{'ltitarget'} = $disk_env{'request.lti.target'};
746: $userhashref->{'ltiuri'} = $disk_env{'request.lti.uri'};
747: }
748: }
749: untie(%disk_env);
750:
751: return $handle;
752: }
753:
754: sub timed_flock {
755: my ($file,$lock_type) = @_;
756: my $failed=0;
757: eval {
758: local $SIG{__DIE__}='DEFAULT';
759: local $SIG{ALRM}=sub {
760: $failed=1;
761: die("failed lock");
762: };
763: alarm(13);
764: flock($file,$lock_type);
765: alarm(0);
766: };
767: if ($failed) {
768: return undef;
769: } else {
770: return 1;
771: }
772: }
773:
774: sub get_sessionfile_vars {
775: my ($handle,$lonidsdir,$storearr) = @_;
776: my %returnhash;
777: unless (ref($storearr) eq 'ARRAY') {
778: return %returnhash;
779: }
780: if (-l "$lonidsdir/$handle.id") {
781: my $link = readlink("$lonidsdir/$handle.id");
782: if ((-e $link) && ($link =~ m{^\Q$lonidsdir\E/(.+)\.id$})) {
783: $handle = $1;
784: }
785: }
786: if ((-e "$lonidsdir/$handle.id") &&
787: ($handle =~ /^($match_username)\_\d+\_($match_domain)\_(.+)$/)) {
788: my ($possuname,$possudom,$possuhome) = ($1,$2,$3);
789: if ((&domain($possudom) ne '') && (&homeserver($possuname,$possudom) eq $possuhome)) {
790: if (open(my $idf,'+<',"$lonidsdir/$handle.id")) {
791: flock($idf,LOCK_SH);
792: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
793: &GDBM_READER(),0640)) {
794: foreach my $item (@{$storearr}) {
795: $returnhash{$item} = $disk_env{$item};
796: }
797: untie(%disk_env);
798: }
799: }
800: }
801: }
802: return %returnhash;
803: }
804:
805: # ---------------------------------------------------------- Append Environment
806:
807: sub appenv {
808: my ($newenv,$roles) = @_;
809: if (ref($newenv) eq 'HASH') {
810: foreach my $key (keys(%{$newenv})) {
811: my $refused = 0;
812: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
813: $refused = 1;
814: if (ref($roles) eq 'ARRAY') {
815: my ($type,$role) = ($key =~ m{^user\.(role|priv)\.(.+?)\./});
816: if (grep(/^\Q$role\E$/,@{$roles})) {
817: $refused = 0;
818: }
819: }
820: }
821: if ($refused) {
822: &logthis("<font color=\"blue\">WARNING: ".
823: "Attempt to modify environment ".$key." to ".$newenv->{$key}
824: .'</font>');
825: delete($newenv->{$key});
826: } else {
827: $env{$key}=$newenv->{$key};
828: }
829: }
830: my $lonids = $perlvar{'lonIDsDir'};
831: if ($env{'user.environment'} =~ m{^\Q$lonids/\E$match_username\_\d+\_$match_domain\_[\w\-.]+\.id$}) {
832: my $opened = open(my $env_file,'+<',$env{'user.environment'});
833: if ($opened
834: && &timed_flock($env_file,LOCK_EX)
835: &&
836: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
837: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
838: while (my ($key,$value) = each(%{$newenv})) {
839: $disk_env{$key} = $value;
840: }
841: untie(%disk_env);
842: }
843: }
844: }
845: return 'ok';
846: }
847: # ----------------------------------------------------- Delete from Environment
848:
849: sub delenv {
850: my ($delthis,$regexp,$roles) = @_;
851: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
852: my $refused = 1;
853: if (ref($roles) eq 'ARRAY') {
854: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
855: if (grep(/^\Q$role\E$/,@{$roles})) {
856: $refused = 0;
857: }
858: }
859: if ($refused) {
860: &logthis("<font color=\"blue\">WARNING: ".
861: "Attempt to delete from environment ".$delthis);
862: return 'error';
863: }
864: }
865: my $opened = open(my $env_file,'+<',$env{'user.environment'});
866: if ($opened
867: && &timed_flock($env_file,LOCK_EX)
868: &&
869: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
870: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
871: foreach my $key (keys(%disk_env)) {
872: if ($regexp) {
873: if ($key=~/^$delthis/) {
874: delete($env{$key});
875: delete($disk_env{$key});
876: }
877: } else {
878: if ($key=~/^\Q$delthis\E/) {
879: delete($env{$key});
880: delete($disk_env{$key});
881: }
882: }
883: }
884: untie(%disk_env);
885: }
886: return 'ok';
887: }
888:
889: sub get_env_multiple {
890: my ($name) = @_;
891: my @values;
892: if (defined($env{$name})) {
893: # exists is it an array
894: if (ref($env{$name})) {
895: @values=@{ $env{$name} };
896: } else {
897: $values[0]=$env{$name};
898: }
899: }
900: return(@values);
901: }
902:
903: # ------------------------------------------------------------------- Locking
904:
905: sub set_lock {
906: my ($text)=@_;
907: $locknum++;
908: my $id=$$.'-'.$locknum;
909: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
910: 'session.lock.'.$id => $text});
911: return $id;
912: }
913:
914: sub get_locks {
915: my $num=0;
916: my %texts=();
917: foreach my $lock (split(/\,/,$env{'session.locks'})) {
918: if ($lock=~/\w/) {
919: $num++;
920: $texts{$lock}=$env{'session.lock.'.$lock};
921: }
922: }
923: return ($num,%texts);
924: }
925:
926: sub remove_lock {
927: my ($id)=@_;
928: my $newlocks='';
929: foreach my $lock (split(/\,/,$env{'session.locks'})) {
930: if (($lock=~/\w/) && ($lock ne $id)) {
931: $newlocks.=','.$lock;
932: }
933: }
934: &appenv({'session.locks' => $newlocks});
935: &delenv('session.lock.'.$id);
936: }
937:
938: sub remove_all_locks {
939: my $activelocks=$env{'session.locks'};
940: foreach my $lock (split(/\,/,$env{'session.locks'})) {
941: if ($lock=~/\w/) {
942: &remove_lock($lock);
943: }
944: }
945: }
946:
947:
948: # ------------------------------------------ Find out current server userload
949: sub userload {
950: my $numusers=0;
951: {
952: opendir(LONIDS,$perlvar{'lonIDsDir'});
953: my $filename;
954: my $curtime=time;
955: while ($filename=readdir(LONIDS)) {
956: next if ($filename eq '.' || $filename eq '..');
957: next if ($filename =~ /publicuser_\d+\.id/);
958: next if ($filename =~ /^[a-f0-9]+_linked\.id$/);
959: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
960: if ($curtime-$mtime < 1800) { $numusers++; }
961: }
962: closedir(LONIDS);
963: }
964: my $userloadpercent=0;
965: my $maxuserload=$perlvar{'lonUserLoadLim'};
966: if ($maxuserload) {
967: $userloadpercent=100*$numusers/$maxuserload;
968: }
969: $userloadpercent=sprintf("%.2f",$userloadpercent);
970: return $userloadpercent;
971: }
972:
973: # ------------------------------ Find server with least workload from spare.tab
974:
975: sub spareserver {
976: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
977: my $spare_server;
978: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
979: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
980: : $userloadpercent;
981: my ($uint_dom,$remotesessions);
982: if (($udom ne '') && (&domain($udom) ne '')) {
983: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
984: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
985: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
986: $remotesessions = $udomdefaults{'remotesessions'};
987: }
988: my $spareshash = &this_host_spares($udom);
989: if (ref($spareshash) eq 'HASH') {
990: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
991: foreach my $try_server (@{ $spareshash->{'primary'} }) {
992: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
993: $try_server));
994: ($spare_server, $lowest_load) =
995: &compare_server_load($try_server, $spare_server, $lowest_load);
996: }
997: }
998:
999: my $found_server = ($spare_server ne '' && $lowest_load < 100);
1000:
1001: if (!$found_server) {
1002: if (ref($spareshash->{'default'}) eq 'ARRAY') {
1003: foreach my $try_server (@{ $spareshash->{'default'} }) {
1004: next unless (&spare_can_host($udom,$uint_dom,
1005: $remotesessions,$try_server));
1006: ($spare_server, $lowest_load) =
1007: &compare_server_load($try_server, $spare_server, $lowest_load);
1008: }
1009: }
1010: }
1011: }
1012:
1013: if (!$want_server_name) {
1014: if (defined($spare_server)) {
1015: my $hostname = &hostname($spare_server);
1016: if (defined($hostname)) {
1017: my $protocol = 'http';
1018: if ($protocol{$spare_server} eq 'https') {
1019: $protocol = $protocol{$spare_server};
1020: }
1021: $spare_server = $protocol.'://'.$hostname;
1022: }
1023: }
1024: }
1025: return $spare_server;
1026: }
1027:
1028: sub compare_server_load {
1029: my ($try_server, $spare_server, $lowest_load, $required) = @_;
1030:
1031: if ($required) {
1032: my ($reqdmajor,$reqdminor) = ($required =~ /^(\d+)\.(\d+)$/);
1033: my $remoterev = &get_server_loncaparev(undef,$try_server);
1034: my ($major,$minor) = ($remoterev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
1035: if (($major eq '' && $minor eq '') ||
1036: (($reqdmajor > $major) || (($reqdmajor == $major) && ($reqdminor > $minor)))) {
1037: return ($spare_server,$lowest_load);
1038: }
1039: }
1040:
1041: my $loadans = &reply('load', $try_server);
1042: my $userloadans = &reply('userload',$try_server);
1043:
1044: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
1045: return ($spare_server, $lowest_load); #didn't get a number from the server
1046: }
1047:
1048: my $load;
1049: if ($loadans =~ /\d/) {
1050: if ($userloadans =~ /\d/) {
1051: #both are numbers, pick the bigger one
1052: $load = ($loadans > $userloadans) ? $loadans
1053: : $userloadans;
1054: } else {
1055: $load = $loadans;
1056: }
1057: } else {
1058: $load = $userloadans;
1059: }
1060:
1061: if (($load =~ /\d/) && ($load < $lowest_load)) {
1062: $spare_server = $try_server;
1063: $lowest_load = $load;
1064: }
1065: return ($spare_server,$lowest_load);
1066: }
1067:
1068: # --------------------------- ask offload servers if user already has a session
1069: sub find_existing_session {
1070: my ($udom,$uname) = @_;
1071: my $spareshash = &this_host_spares($udom);
1072: if (ref($spareshash) eq 'HASH') {
1073: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
1074: foreach my $try_server (@{ $spareshash->{'primary'} }) {
1075: return $try_server if (&has_user_session($try_server, $udom, $uname));
1076: }
1077: }
1078: if (ref($spareshash->{'default'}) eq 'ARRAY') {
1079: foreach my $try_server (@{ $spareshash->{'default'} }) {
1080: return $try_server if (&has_user_session($try_server, $udom, $uname));
1081: }
1082: }
1083: }
1084: return;
1085: }
1086:
1087: sub delusersession {
1088: my ($lonid,$udom,$uname) = @_;
1089: my $uprimary_id = &domain($udom,'primary');
1090: my $uintdom = &internet_dom($uprimary_id);
1091: my $intdom = &internet_dom($lonid);
1092: my $serverhomedom = &host_domain($lonid);
1093: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1094: return &reply(join(':','delusersession',
1095: map {&escape($_)} ($udom,$uname)),$lonid);
1096: }
1097: return;
1098: }
1099:
1100: # check if user's browser sent load balancer cookie and server still has session
1101: # and is not overloaded.
1102: sub check_for_balancer_cookie {
1103: my ($r,$update_mtime) = @_;
1104: my ($otherserver,$cookie);
1105: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
1106: if (exists($cookies{'balanceID'})) {
1107: my $balid = $cookies{'balanceID'};
1108: $cookie=&LONCAPA::clean_handle($balid->value);
1109: my $balancedir=$r->dir_config('lonBalanceDir');
1110: if ((-d $balancedir) && (-e "$balancedir/$cookie.id")) {
1111: if ($cookie =~ /^($match_domain)_($match_username)_[a-f0-9]+$/) {
1112: my ($possudom,$possuname) = ($1,$2);
1113: my $has_session = 0;
1114: if ((&domain($possudom) ne '') &&
1115: (&homeserver($possuname,$possudom) ne 'no_host')) {
1116: my $try_server;
1117: my $opened = open(my $idf,'+<',"$balancedir/$cookie.id");
1118: if ($opened) {
1119: flock($idf,LOCK_SH);
1120: while (my $line = <$idf>) {
1121: chomp($line);
1122: if (&hostname($line) ne '') {
1123: $try_server = $line;
1124: last;
1125: }
1126: }
1127: close($idf);
1128: if (($try_server) &&
1129: (&has_user_session($try_server,$possudom,$possuname))) {
1130: my $lowest_load = 30000;
1131: ($otherserver,$lowest_load) =
1132: &compare_server_load($try_server,undef,$lowest_load);
1133: if ($otherserver ne '' && $lowest_load < 100) {
1134: $has_session = 1;
1135: } else {
1136: undef($otherserver);
1137: }
1138: }
1139: }
1140: }
1141: if ($has_session) {
1142: if ($update_mtime) {
1143: my $atime = my $mtime = time;
1144: utime($atime,$mtime,"$balancedir/$cookie.id");
1145: }
1146: } else {
1147: unlink("$balancedir/$cookie.id");
1148: }
1149: }
1150: }
1151: }
1152: return ($otherserver,$cookie);
1153: }
1154:
1155: sub updatebalcookie {
1156: my ($cookie,$balancer,$lastentry)=@_;
1157: if ($cookie =~ /^($match_domain)\_($match_username)\_[a-f0-9]{32}$/) {
1158: my ($udom,$uname) = ($1,$2);
1159: my $uprimary_id = &domain($udom,'primary');
1160: my $uintdom = &internet_dom($uprimary_id);
1161: my $intdom = &internet_dom($balancer);
1162: my $serverhomedom = &host_domain($balancer);
1163: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1164: return &reply('updatebalcookie:'.&escape($cookie).':'.&escape($lastentry),$balancer);
1165: }
1166: }
1167: return;
1168: }
1169:
1170: sub delbalcookie {
1171: my ($cookie,$balancer) =@_;
1172: if ($cookie =~ /^($match_domain)\_($match_username)\_[a-f0-9]{32}$/) {
1173: my ($udom,$uname) = ($1,$2);
1174: my $uprimary_id = &domain($udom,'primary');
1175: my $uintdom = &internet_dom($uprimary_id);
1176: my $intdom = &internet_dom($balancer);
1177: my $serverhomedom = &host_domain($balancer);
1178: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1179: return &reply('delbalcookie:'.&escape($cookie),$balancer);
1180: }
1181: }
1182: }
1183:
1184: # -------------------------------- ask if server already has a session for user
1185: sub has_user_session {
1186: my ($lonid,$udom,$uname) = @_;
1187: my $result = &reply(join(':','userhassession',
1188: map {&escape($_)} ($udom,$uname)),$lonid);
1189: return 1 if ($result eq 'ok');
1190:
1191: return 0;
1192: }
1193:
1194: # --------- determine least loaded server in a user's domain which allows login
1195:
1196: sub choose_server {
1197: my ($udom,$checkloginvia,$required,$skiploadbal) = @_;
1198: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
1199: my %servers = &get_servers($udom);
1200: my $lowest_load = 30000;
1201: my ($login_host,$hostname,$portal_path,$isredirect,$balancers);
1202: if ($skiploadbal) {
1203: ($balancers,my $cached)=&is_cached_new('loadbalancing',$udom);
1204: unless (defined($cached)) {
1205: my $cachetime = 60*60*24;
1206: my %domconfig =
1207: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1208: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1209: $balancers = &do_cache_new('loadbalancing',$udom,$domconfig{'loadbalancing'},
1210: $cachetime);
1211: }
1212: }
1213: }
1214: foreach my $lonhost (keys(%servers)) {
1215: if ($skiploadbal) {
1216: if (ref($balancers) eq 'HASH') {
1217: next if (exists($balancers->{$lonhost}));
1218: }
1219: }
1220: my $loginvia;
1221: if ($checkloginvia) {
1222: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
1223: if ($loginvia) {
1224: my ($server,$path) = split(/:/,$loginvia);
1225: ($login_host, $lowest_load) =
1226: &compare_server_load($server, $login_host, $lowest_load, $required);
1227: if ($login_host eq $server) {
1228: $portal_path = $path;
1229: $isredirect = 1;
1230: }
1231: } else {
1232: ($login_host, $lowest_load) =
1233: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1234: if ($login_host eq $lonhost) {
1235: $portal_path = '';
1236: $isredirect = '';
1237: }
1238: }
1239: } else {
1240: ($login_host, $lowest_load) =
1241: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1242: }
1243: }
1244: if ($login_host ne '') {
1245: $hostname = &hostname($login_host);
1246: }
1247: return ($login_host,$hostname,$portal_path,$isredirect,$lowest_load);
1248: }
1249:
1250: sub get_course_sessions {
1251: my ($cnum,$cdom,$lastactivity) = @_;
1252: my %servers = &internet_dom_servers($cdom);
1253: my %returnhash;
1254: foreach my $server (sort(keys(%servers))) {
1255: my $rep = &reply("coursesessions:$cdom:$cnum:$lastactivity",$server);
1256: my @pairs=split(/\&/,$rep);
1257: unless (($rep eq 'unknown_cmd') || ($rep =~ /^error/)) {
1258: foreach my $item (@pairs) {
1259: my ($key,$value)=split(/=/,$item,2);
1260: $key = &unescape($key);
1261: next if ($key =~ /^error: 2 /);
1262: if (exists($returnhash{$key})) {
1263: next if ($value < $returnhash{$key});
1264: }
1265: $returnhash{$key}=$value;
1266: }
1267: }
1268: }
1269: return %returnhash;
1270: }
1271:
1272: # --------------------------------------------- Try to change a user's password
1273:
1274: sub changepass {
1275: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
1276: $currentpass = &escape($currentpass);
1277: $newpass = &escape($newpass);
1278: my $lonhost = $perlvar{'lonHostID'};
1279: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
1280: $server);
1281: if (! $answer) {
1282: &logthis("No reply on password change request to $server ".
1283: "by $uname in domain $udom.");
1284: } elsif ($answer =~ "^ok") {
1285: &logthis("$uname in $udom successfully changed their password ".
1286: "on $server.");
1287: } elsif ($answer =~ "^pwchange_failure") {
1288: &logthis("$uname in $udom was unable to change their password ".
1289: "on $server. The action was blocked by either lcpasswd ".
1290: "or pwchange");
1291: } elsif ($answer =~ "^non_authorized") {
1292: &logthis("$uname in $udom did not get their password correct when ".
1293: "attempting to change it on $server.");
1294: } elsif ($answer =~ "^auth_mode_error") {
1295: &logthis("$uname in $udom attempted to change their password despite ".
1296: "not being locally or internally authenticated on $server.");
1297: } elsif ($answer =~ "^unknown_user") {
1298: &logthis("$uname in $udom attempted to change their password ".
1299: "on $server but were unable to because $server is not ".
1300: "their home server.");
1301: } elsif ($answer =~ "^refused") {
1302: &logthis("$server refused to change $uname in $udom password because ".
1303: "it was sent an unencrypted request to change the password.");
1304: } elsif ($answer =~ "invalid_client") {
1305: &logthis("$server refused to change $uname in $udom password because ".
1306: "it was a reset by e-mail originating from an invalid server.");
1307: } elsif ($answer =~ "^prioruse") {
1308: &logthis("$server refused to change $uname in $udom password because ".
1309: "the password had been used before");
1310: }
1311: return $answer;
1312: }
1313:
1314: # ----------------------- Try to determine user's current authentication scheme
1315:
1316: sub queryauthenticate {
1317: my ($uname,$udom)=@_;
1318: my $uhome=&homeserver($uname,$udom);
1319: if (!$uhome) {
1320: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1321: return 'no_host';
1322: }
1323: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1324: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1325: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1326: }
1327: return $answer;
1328: }
1329:
1330: # --------- Try to authenticate user from domain's lib servers (first this one)
1331:
1332: sub authenticate {
1333: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1334: $upass=&escape($upass);
1335: $uname= &LONCAPA::clean_username($uname);
1336: my $uhome=&homeserver($uname,$udom,1);
1337: my $newhome;
1338: if ((!$uhome) || ($uhome eq 'no_host')) {
1339: # Maybe the machine was offline and only re-appeared again recently?
1340: &reconlonc();
1341: # One more
1342: $uhome=&homeserver($uname,$udom,1);
1343: if (($uhome eq 'no_host') && $checkdefauth) {
1344: if (defined(&domain($udom,'primary'))) {
1345: $newhome=&domain($udom,'primary');
1346: }
1347: if ($newhome ne '') {
1348: $uhome = $newhome;
1349: }
1350: }
1351: if ((!$uhome) || ($uhome eq 'no_host')) {
1352: &logthis("User $uname at $udom is unknown in authenticate");
1353: return 'no_host';
1354: }
1355: }
1356: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1357: if ($answer eq 'authorized') {
1358: if ($newhome) {
1359: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1360: return 'no_account_on_host';
1361: } else {
1362: &logthis("User $uname at $udom authorized by $uhome");
1363: return $uhome;
1364: }
1365: }
1366: if ($answer eq 'non_authorized') {
1367: &logthis("User $uname at $udom rejected by $uhome");
1368: return 'no_host';
1369: }
1370: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1371: return 'no_host';
1372: }
1373:
1374: sub can_host_session {
1375: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1376: my $canhost = 1;
1377: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1378: if (ref($remotesessions) eq 'HASH') {
1379: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1380: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1381: $canhost = 0;
1382: } else {
1383: $canhost = 1;
1384: }
1385: }
1386: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1387: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1388: $canhost = 1;
1389: } else {
1390: $canhost = 0;
1391: }
1392: }
1393: if ($canhost) {
1394: if ($remotesessions->{'version'} ne '') {
1395: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1396: if ($reqmajor ne '' && $reqminor ne '') {
1397: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1398: my $major = $1;
1399: my $minor = $2;
1400: if (($major < $reqmajor ) ||
1401: (($major == $reqmajor) && ($minor < $reqminor))) {
1402: $canhost = 0;
1403: }
1404: } else {
1405: $canhost = 0;
1406: }
1407: }
1408: }
1409: }
1410: }
1411: if ($canhost) {
1412: if (ref($hostedsessions) eq 'HASH') {
1413: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1414: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1415: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1416: if (($uint_dom ne '') &&
1417: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1418: $canhost = 0;
1419: } else {
1420: $canhost = 1;
1421: }
1422: }
1423: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1424: if (($uint_dom ne '') &&
1425: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1426: $canhost = 1;
1427: } else {
1428: $canhost = 0;
1429: }
1430: }
1431: }
1432: }
1433: return $canhost;
1434: }
1435:
1436: sub spare_can_host {
1437: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1438: my $canhost=1;
1439: my $try_server_hostname = &hostname($try_server);
1440: my $serverhomeID = &get_server_homeID($try_server_hostname);
1441: my $serverhomedom = &host_domain($serverhomeID);
1442: my %defdomdefaults = &get_domain_defaults($serverhomedom);
1443: if (ref($defdomdefaults{'offloadnow'}) eq 'HASH') {
1444: if ($defdomdefaults{'offloadnow'}{$try_server}) {
1445: $canhost = 0;
1446: }
1447: }
1448: if ($canhost) {
1449: if (ref($defdomdefaults{'offloadoth'}) eq 'HASH') {
1450: if ($defdomdefaults{'offloadoth'}{$try_server}) {
1451: unless (&shared_institution($udom,$try_server)) {
1452: $canhost = 0;
1453: }
1454: }
1455: }
1456: }
1457: if (($canhost) && ($uint_dom)) {
1458: my @intdoms;
1459: my $internet_names = &get_internet_names($try_server);
1460: if (ref($internet_names) eq 'ARRAY') {
1461: @intdoms = @{$internet_names};
1462: }
1463: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1464: my $remoterev = &get_server_loncaparev(undef,$try_server);
1465: $canhost = &can_host_session($udom,$try_server,$remoterev,
1466: $remotesessions,
1467: $defdomdefaults{'hostedsessions'});
1468: }
1469: }
1470: return $canhost;
1471: }
1472:
1473: sub this_host_spares {
1474: my ($dom) = @_;
1475: my ($dom_in_use,$lonhost_in_use,$result);
1476: my @hosts = ¤t_machine_ids();
1477: foreach my $lonhost (@hosts) {
1478: if (&host_domain($lonhost) eq $dom) {
1479: $dom_in_use = $dom;
1480: $lonhost_in_use = $lonhost;
1481: last;
1482: }
1483: }
1484: if ($dom_in_use ne '') {
1485: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1486: }
1487: if (ref($result) ne 'HASH') {
1488: $lonhost_in_use = $perlvar{'lonHostID'};
1489: $dom_in_use = &host_domain($lonhost_in_use);
1490: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1491: if (ref($result) ne 'HASH') {
1492: $result = \%spareid;
1493: }
1494: }
1495: return $result;
1496: }
1497:
1498: sub spares_for_offload {
1499: my ($dom_in_use,$lonhost_in_use) = @_;
1500: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1501: if (defined($cached)) {
1502: return $result;
1503: } else {
1504: my $cachetime = 60*60*24;
1505: my %domconfig =
1506: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1507: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1508: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1509: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1510: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1511: }
1512: }
1513: }
1514: }
1515: return;
1516: }
1517:
1518: sub get_lonbalancer_config {
1519: my ($servers) = @_;
1520: my ($currbalancer,$currtargets);
1521: if (ref($servers) eq 'HASH') {
1522: foreach my $server (keys(%{$servers})) {
1523: my %what = (
1524: spareid => 1,
1525: perlvar => 1,
1526: );
1527: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1528: if ($result eq 'ok') {
1529: if (ref($returnhash) eq 'HASH') {
1530: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1531: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1532: $currbalancer = $server;
1533: $currtargets = {};
1534: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1535: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1536: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1537: }
1538: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1539: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1540: }
1541: }
1542: last;
1543: }
1544: }
1545: }
1546: }
1547: }
1548: }
1549: return ($currbalancer,$currtargets);
1550: }
1551:
1552: sub check_loadbalancing {
1553: my ($uname,$udom,$caller) = @_;
1554: my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
1555: $rule_in_effect,$offloadto,$otherserver,$setcookie,$dom_balancers);
1556: my $lonhost = $perlvar{'lonHostID'};
1557: my @hosts = ¤t_machine_ids();
1558: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1559: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1560: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1561: my $serverhomedom = &host_domain($lonhost);
1562: my $domneedscache;
1563: my $cachetime = 60*60*24;
1564:
1565: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1566: $dom_in_use = $udom;
1567: $homeintdom = 1;
1568: } else {
1569: $dom_in_use = $serverhomedom;
1570: }
1571: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1572: unless (defined($cached)) {
1573: my %domconfig =
1574: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1575: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1576: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1577: } else {
1578: $domneedscache = $dom_in_use;
1579: }
1580: }
1581: if (ref($result) eq 'HASH') {
1582: ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers) =
1583: &check_balancer_result($result,@hosts);
1584: if ($is_balancer) {
1585: if (ref($currrules) eq 'HASH') {
1586: if ($homeintdom) {
1587: if ($uname ne '') {
1588: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1589: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1590: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1591: $rule_in_effect = $currrules->{'_LC_author'};
1592: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1593: $rule_in_effect = $currrules->{'_LC_adv'}
1594: }
1595: }
1596: if ($rule_in_effect eq '') {
1597: my %userenv = &userenvironment($udom,$uname,'inststatus');
1598: if ($userenv{'inststatus'} ne '') {
1599: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1600: my ($othertitle,$usertypes,$types) =
1601: &Apache::loncommon::sorted_inst_types($udom);
1602: if (ref($types) eq 'ARRAY') {
1603: foreach my $type (@{$types}) {
1604: if (grep(/^\Q$type\E$/,@statuses)) {
1605: if (exists($currrules->{$type})) {
1606: $rule_in_effect = $currrules->{$type};
1607: }
1608: }
1609: }
1610: }
1611: } else {
1612: if (exists($currrules->{'default'})) {
1613: $rule_in_effect = $currrules->{'default'};
1614: }
1615: }
1616: }
1617: } else {
1618: if (exists($currrules->{'default'})) {
1619: $rule_in_effect = $currrules->{'default'};
1620: }
1621: }
1622: } else {
1623: if ($currrules->{'_LC_external'} ne '') {
1624: $rule_in_effect = $currrules->{'_LC_external'};
1625: }
1626: }
1627: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1628: $uname,$udom);
1629: }
1630: }
1631: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1632: ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1633: unless (defined($cached)) {
1634: my %domconfig =
1635: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1636: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1637: $result = &do_cache_new('loadbalancing',$serverhomedom,$domconfig{'loadbalancing'},$cachetime);
1638: } else {
1639: $domneedscache = $serverhomedom;
1640: }
1641: }
1642: if (ref($result) eq 'HASH') {
1643: ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers) =
1644: &check_balancer_result($result,@hosts);
1645: if ($is_balancer) {
1646: if (ref($currrules) eq 'HASH') {
1647: if ($currrules->{'_LC_internetdom'} ne '') {
1648: $rule_in_effect = $currrules->{'_LC_internetdom'};
1649: }
1650: }
1651: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1652: $uname,$udom);
1653: }
1654: } else {
1655: if ($perlvar{'lonBalancer'} eq 'yes') {
1656: $is_balancer = 1;
1657: $offloadto = &this_host_spares($dom_in_use);
1658: }
1659: unless (defined($cached)) {
1660: $domneedscache = $serverhomedom;
1661: }
1662: }
1663: } else {
1664: if ($perlvar{'lonBalancer'} eq 'yes') {
1665: $is_balancer = 1;
1666: $offloadto = &this_host_spares($dom_in_use);
1667: }
1668: unless (defined($cached)) {
1669: $domneedscache = $serverhomedom;
1670: }
1671: }
1672: if ($domneedscache) {
1673: &do_cache_new('loadbalancing',$domneedscache,$is_balancer,$cachetime);
1674: }
1675: if (($is_balancer) && ($caller ne 'switchserver')) {
1676: my $lowest_load = 30000;
1677: if (ref($offloadto) eq 'HASH') {
1678: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1679: foreach my $try_server (@{$offloadto->{'primary'}}) {
1680: ($otherserver,$lowest_load) =
1681: &compare_server_load($try_server,$otherserver,$lowest_load);
1682: }
1683: }
1684: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1685:
1686: if (!$found_server) {
1687: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1688: foreach my $try_server (@{$offloadto->{'default'}}) {
1689: ($otherserver,$lowest_load) =
1690: &compare_server_load($try_server,$otherserver,$lowest_load);
1691: }
1692: }
1693: }
1694: } elsif (ref($offloadto) eq 'ARRAY') {
1695: if (@{$offloadto} == 1) {
1696: $otherserver = $offloadto->[0];
1697: } elsif (@{$offloadto} > 1) {
1698: foreach my $try_server (@{$offloadto}) {
1699: ($otherserver,$lowest_load) =
1700: &compare_server_load($try_server,$otherserver,$lowest_load);
1701: }
1702: }
1703: }
1704: unless ($caller eq 'login') {
1705: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1706: $is_balancer = 0;
1707: if ($uname ne '' && $udom ne '') {
1708: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1709: &appenv({'user.loadbalexempt' => $lonhost,
1710: 'user.loadbalcheck.time' => time});
1711: }
1712: }
1713: }
1714: }
1715: }
1716: if (($is_balancer) && (!$homeintdom)) {
1717: undef($setcookie);
1718: }
1719: return ($is_balancer,$otherserver,$setcookie,$offloadto,$dom_balancers);
1720: }
1721:
1722: sub check_balancer_result {
1723: my ($result,@hosts) = @_;
1724: my ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers);
1725: if (ref($result) eq 'HASH') {
1726: if ($result->{'lonhost'} ne '') {
1727: my $currbalancer = $result->{'lonhost'};
1728: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1729: $is_balancer = 1;
1730: $currtargets = $result->{'targets'};
1731: $currrules = $result->{'rules'};
1732: }
1733: $dom_balancers = $currbalancer;
1734: } else {
1735: if (keys(%{$result})) {
1736: foreach my $key (keys(%{$result})) {
1737: if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&
1738: (ref($result->{$key}) eq 'HASH')) {
1739: $is_balancer = 1;
1740: $currrules = $result->{$key}{'rules'};
1741: $currtargets = $result->{$key}{'targets'};
1742: $setcookie = $result->{$key}{'cookie'};
1743: last;
1744: }
1745: }
1746: $dom_balancers = join(',',sort(keys(%{$result})));
1747: }
1748: }
1749: }
1750: return ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers);
1751: }
1752:
1753: sub get_loadbalancer_targets {
1754: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1755: my $offloadto;
1756: if ($rule_in_effect eq 'none') {
1757: return [$perlvar{'lonHostID'}];
1758: } elsif ($rule_in_effect eq '') {
1759: $offloadto = $currtargets;
1760: } else {
1761: if ($rule_in_effect eq 'homeserver') {
1762: my $homeserver = &homeserver($uname,$udom);
1763: if ($homeserver ne 'no_host') {
1764: $offloadto = [$homeserver];
1765: }
1766: } elsif ($rule_in_effect eq 'externalbalancer') {
1767: my %domconfig =
1768: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1769: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1770: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1771: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1772: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1773: }
1774: }
1775: } else {
1776: my %servers = &internet_dom_servers($udom);
1777: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1778: if (&hostname($remotebalancer) ne '') {
1779: $offloadto = [$remotebalancer];
1780: }
1781: }
1782: } elsif (&hostname($rule_in_effect) ne '') {
1783: $offloadto = [$rule_in_effect];
1784: }
1785: }
1786: return $offloadto;
1787: }
1788:
1789: sub internet_dom_servers {
1790: my ($dom) = @_;
1791: my (%uniqservers,%servers);
1792: my $primaryserver = &hostname(&domain($dom,'primary'));
1793: my @machinedoms = &machine_domains($primaryserver);
1794: foreach my $mdom (@machinedoms) {
1795: my %currservers = %servers;
1796: my %server = &get_servers($mdom);
1797: %servers = (%currservers,%server);
1798: }
1799: my %by_hostname;
1800: foreach my $id (keys(%servers)) {
1801: push(@{$by_hostname{$servers{$id}}},$id);
1802: }
1803: foreach my $hostname (sort(keys(%by_hostname))) {
1804: if (@{$by_hostname{$hostname}} > 1) {
1805: my $match = 0;
1806: foreach my $id (@{$by_hostname{$hostname}}) {
1807: if (&host_domain($id) eq $dom) {
1808: $uniqservers{$id} = $hostname;
1809: $match = 1;
1810: }
1811: }
1812: unless ($match) {
1813: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1814: }
1815: } else {
1816: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1817: }
1818: }
1819: return %uniqservers;
1820: }
1821:
1822: sub trusted_domains {
1823: my ($cmdtype,$calldom) = @_;
1824: my ($trusted,$untrusted);
1825: if (&domain($calldom) eq '') {
1826: return ($trusted,$untrusted);
1827: }
1828: unless ($cmdtype =~ /^(content|shared|enroll|coaurem|othcoau|domroles|catalog|reqcrs|msg)$/) {
1829: return ($trusted,$untrusted);
1830: }
1831: my $callprimary = &domain($calldom,'primary');
1832: my $intcalldom = &Apache::lonnet::internet_dom($callprimary);
1833: if ($intcalldom eq '') {
1834: return ($trusted,$untrusted);
1835: }
1836:
1837: my ($trustconfig,$cached)=&Apache::lonnet::is_cached_new('trust',$calldom);
1838: unless (defined($cached)) {
1839: my %domconfig = &Apache::lonnet::get_dom('configuration',['trust'],$calldom);
1840: &Apache::lonnet::do_cache_new('trust',$calldom,$domconfig{'trust'},3600);
1841: $trustconfig = $domconfig{'trust'};
1842: }
1843: if (ref($trustconfig)) {
1844: my (%possexc,%possinc,@allexc,@allinc);
1845: if (ref($trustconfig->{$cmdtype}) eq 'HASH') {
1846: if (ref($trustconfig->{$cmdtype}->{'exc'}) eq 'ARRAY') {
1847: map { $possexc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'exc'}};
1848: }
1849: if (ref($trustconfig->{$cmdtype}->{'inc'}) eq 'ARRAY') {
1850: $possinc{$intcalldom} = 1;
1851: map { $possinc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'inc'}};
1852: }
1853: }
1854: if (keys(%possexc)) {
1855: if (keys(%possinc)) {
1856: foreach my $key (sort(keys(%possexc))) {
1857: next if ($key eq $intcalldom);
1858: unless ($possinc{$key}) {
1859: push(@allexc,$key);
1860: }
1861: }
1862: } else {
1863: @allexc = sort(keys(%possexc));
1864: }
1865: }
1866: if (keys(%possinc)) {
1867: $possinc{$intcalldom} = 1;
1868: @allinc = sort(keys(%possinc));
1869: }
1870: if ((@allexc > 0) || (@allinc > 0)) {
1871: my %doms_by_intdom;
1872: my %allintdoms = &all_host_intdom();
1873: my %alldoms = &all_host_domain();
1874: foreach my $key (%allintdoms) {
1875: if (ref($doms_by_intdom{$allintdoms{$key}}) eq 'ARRAY') {
1876: unless (grep(/^\Q$alldoms{$key}\E$/,@{$doms_by_intdom{$allintdoms{$key}}})) {
1877: push(@{$doms_by_intdom{$allintdoms{$key}}},$alldoms{$key});
1878: }
1879: } else {
1880: $doms_by_intdom{$allintdoms{$key}} = [$alldoms{$key}];
1881: }
1882: }
1883: foreach my $exc (@allexc) {
1884: if (ref($doms_by_intdom{$exc}) eq 'ARRAY') {
1885: push(@{$untrusted},@{$doms_by_intdom{$exc}});
1886: }
1887: }
1888: foreach my $inc (@allinc) {
1889: if (ref($doms_by_intdom{$inc}) eq 'ARRAY') {
1890: push(@{$trusted},@{$doms_by_intdom{$inc}});
1891: }
1892: }
1893: }
1894: }
1895: return ($trusted,$untrusted);
1896: }
1897:
1898: sub will_trust {
1899: my ($cmdtype,$domain,$possdom) = @_;
1900: return 1 if ($domain eq $possdom);
1901: my ($trustedref,$untrustedref) = &trusted_domains($cmdtype,$possdom);
1902: my $willtrust;
1903: if ((ref($trustedref) eq 'ARRAY') && (@{$trustedref} > 0)) {
1904: if (grep(/^\Q$domain\E$/,@{$trustedref})) {
1905: $willtrust = 1;
1906: }
1907: } elsif ((ref($untrustedref) eq 'ARRAY') && (@{$untrustedref} > 0)) {
1908: unless (grep(/^\Q$domain\E$/,@{$untrustedref})) {
1909: $willtrust = 1;
1910: }
1911: } else {
1912: $willtrust = 1;
1913: }
1914: return $willtrust;
1915: }
1916:
1917: # ---------------------- Find the homebase for a user from domain's lib servers
1918:
1919: my %homecache;
1920: sub homeserver {
1921: my ($uname,$udom,$ignoreBadCache)=@_;
1922: my $index="$uname:$udom";
1923:
1924: if (exists($homecache{$index})) { return $homecache{$index}; }
1925:
1926: my %servers = &get_servers($udom,'library');
1927: foreach my $tryserver (keys(%servers)) {
1928: next if ($ignoreBadCache ne 'true' &&
1929: exists($badServerCache{$tryserver}));
1930:
1931: my $answer=reply("home:$udom:$uname",$tryserver);
1932: if ($answer eq 'found') {
1933: delete($badServerCache{$tryserver});
1934: return $homecache{$index}=$tryserver;
1935: } elsif ($answer eq 'no_host') {
1936: $badServerCache{$tryserver}=1;
1937: }
1938: }
1939: return 'no_host';
1940: }
1941:
1942: # ----- Find the usernames behind a list of student/employee IDs or clicker IDs
1943:
1944: sub idget {
1945: my ($udom,$idsref,$namespace)=@_;
1946: my %returnhash=();
1947: my @ids=();
1948: if (ref($idsref) eq 'ARRAY') {
1949: @ids = @{$idsref};
1950: } else {
1951: return %returnhash;
1952: }
1953: if ($namespace eq '') {
1954: $namespace = 'ids';
1955: }
1956:
1957: my %servers = &get_servers($udom,'library');
1958: foreach my $tryserver (keys(%servers)) {
1959: my $idlist=join('&', map { &escape($_); } @ids);
1960: if ($namespace eq 'ids') {
1961: $idlist=~tr/A-Z/a-z/;
1962: }
1963: my $reply;
1964: if ($namespace eq 'ids') {
1965: $reply=&reply("idget:$udom:".$idlist,$tryserver);
1966: } else {
1967: $reply=&reply("getdom:$udom:$namespace:$idlist",$tryserver);
1968: }
1969: my @answer=();
1970: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1971: @answer=split(/\&/,$reply);
1972: } ;
1973: my $i;
1974: for ($i=0;$i<=$#ids;$i++) {
1975: if ($answer[$i]) {
1976: $returnhash{$ids[$i]}=&unescape($answer[$i]);
1977: }
1978: }
1979: }
1980: return %returnhash;
1981: }
1982:
1983: # ------------------------------------- Find the IDs behind a list of usernames
1984:
1985: sub idrget {
1986: my ($udom,@unames)=@_;
1987: my %returnhash=();
1988: foreach my $uname (@unames) {
1989: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1990: }
1991: return %returnhash;
1992: }
1993:
1994: # Store away a list of names and associated student/employee IDs or clicker IDs
1995:
1996: sub idput {
1997: my ($udom,$idsref,$uhom,$namespace)=@_;
1998: my %servers=();
1999: my %ids=();
2000: my %byid = ();
2001: if (ref($idsref) eq 'HASH') {
2002: %ids=%{$idsref};
2003: }
2004: if ($namespace eq '') {
2005: $namespace = 'ids';
2006: }
2007: foreach my $uname (keys(%ids)) {
2008: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
2009: if ($uhom eq '') {
2010: $uhom=&homeserver($uname,$udom);
2011: }
2012: if ($uhom ne 'no_host') {
2013: my $esc_unam=&escape($uname);
2014: if ($namespace eq 'ids') {
2015: my $id=&escape($ids{$uname});
2016: $id=~tr/A-Z/a-z/;
2017: my $esc_unam=&escape($uname);
2018: $servers{$uhom}.=$id.'='.$esc_unam.'&';
2019: } else {
2020: my @currids = split(/,/,$ids{$uname});
2021: foreach my $id (@currids) {
2022: $byid{$uhom}{$id} .= $uname.',';
2023: }
2024: }
2025: }
2026: }
2027: if ($namespace eq 'clickers') {
2028: foreach my $server (keys(%byid)) {
2029: if (ref($byid{$server}) eq 'HASH') {
2030: foreach my $id (keys(%{$byid{$server}})) {
2031: $byid{$server} =~ s/,$//;
2032: $servers{$uhom}.=&escape($id).'='.&escape($byid{$server}).'&';
2033: }
2034: }
2035: }
2036: }
2037: foreach my $server (keys(%servers)) {
2038: $servers{$server} =~ s/\&$//;
2039: if ($namespace eq 'ids') {
2040: &critical('idput:'.$udom.':'.$servers{$server},$server);
2041: } else {
2042: &critical('updateclickers:'.$udom.':add:'.$servers{$server},$server);
2043: }
2044: }
2045: }
2046:
2047: # ------------- Delete unwanted student/employee IDs or clicker IDs from domain
2048:
2049: sub iddel {
2050: my ($udom,$idshashref,$uhome,$namespace)=@_;
2051: my %result=();
2052: my %ids=();
2053: my %byid = ();
2054: if (ref($idshashref) eq 'HASH') {
2055: %ids=%{$idshashref};
2056: } else {
2057: return %result;
2058: }
2059: if ($namespace eq '') {
2060: $namespace = 'ids';
2061: }
2062: my %servers=();
2063: while (my ($id,$unamestr) = each(%ids)) {
2064: if ($namespace eq 'ids') {
2065: my $uhom = $uhome;
2066: if ($uhom eq '') {
2067: $uhom=&homeserver($unamestr,$udom);
2068: }
2069: if ($uhom ne 'no_host') {
2070: $servers{$uhom}.='&'.&escape($id);
2071: }
2072: } else {
2073: my @curritems = split(/,/,$ids{$id});
2074: foreach my $uname (@curritems) {
2075: my $uhom = $uhome;
2076: if ($uhom eq '') {
2077: $uhom=&homeserver($uname,$udom);
2078: }
2079: if ($uhom ne 'no_host') {
2080: $byid{$uhom}{$id} .= $uname.',';
2081: }
2082: }
2083: }
2084: }
2085: if ($namespace eq 'clickers') {
2086: foreach my $server (keys(%byid)) {
2087: if (ref($byid{$server}) eq 'HASH') {
2088: foreach my $id (keys(%{$byid{$server}})) {
2089: $byid{$server}{$id} =~ s/,$//;
2090: $servers{$server}.=&escape($id).'='.&escape($byid{$server}{$id}).'&';
2091: }
2092: }
2093: }
2094: }
2095: foreach my $server (keys(%servers)) {
2096: $servers{$server} =~ s/\&$//;
2097: if ($namespace eq 'ids') {
2098: $result{$server} = &critical('iddel:'.$udom.':'.$servers{$server},$uhome);
2099: } elsif ($namespace eq 'clickers') {
2100: $result{$server} = &critical('updateclickers:'.$udom.':del:'.$servers{$server},$server);
2101: }
2102: }
2103: return %result;
2104: }
2105:
2106: # ----- Update clicker ID-to-username look-ups in clickers.db on library server
2107:
2108: sub updateclickers {
2109: my ($udom,$action,$idshashref,$uhome,$critical) = @_;
2110: my %clickers;
2111: if (ref($idshashref) eq 'HASH') {
2112: %clickers=%{$idshashref};
2113: } else {
2114: return;
2115: }
2116: my $items='';
2117: foreach my $item (keys(%clickers)) {
2118: $items.=&escape($item).'='.&escape($clickers{$item}).'&';
2119: }
2120: $items=~s/\&$//;
2121: my $request = "updateclickers:$udom:$action:$items";
2122: if ($critical) {
2123: return &critical($request,$uhome);
2124: } else {
2125: return &reply($request,$uhome);
2126: }
2127: }
2128:
2129: # ------------------------------dump from db file owned by domainconfig user
2130: sub dump_dom {
2131: my ($namespace, $udom, $regexp) = @_;
2132:
2133: $udom ||= $env{'user.domain'};
2134:
2135: return () unless $udom;
2136:
2137: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
2138: }
2139:
2140: # ------------------------------------------ get items from domain db files
2141:
2142: sub get_dom {
2143: my ($namespace,$storearr,$udom,$uhome)=@_;
2144: return if ($udom eq 'public');
2145: my $items='';
2146: foreach my $item (@$storearr) {
2147: $items.=&escape($item).'&';
2148: }
2149: $items=~s/\&$//;
2150: if (!$udom) {
2151: $udom=$env{'user.domain'};
2152: return if ($udom eq 'public');
2153: if (defined(&domain($udom,'primary'))) {
2154: $uhome=&domain($udom,'primary');
2155: } else {
2156: undef($uhome);
2157: }
2158: } else {
2159: if (!$uhome) {
2160: if (defined(&domain($udom,'primary'))) {
2161: $uhome=&domain($udom,'primary');
2162: }
2163: }
2164: }
2165: if ($udom && $uhome && ($uhome ne 'no_host')) {
2166: my $rep;
2167: if (grep { $_ eq $uhome } ¤t_machine_ids()) {
2168: # domain information is hosted on this machine
2169: my $cmd = 'getdom';
2170: if ($namespace =~ /^enc/) {
2171: $cmd = 'egetdom';
2172: }
2173: $rep = &LONCAPA::Lond::get_dom("$cmd:$udom:$namespace:$items");
2174: } else {
2175: if ($namespace =~ /^enc/) {
2176: $rep=&reply("encrypt:egetdom:$udom:$namespace:$items",$uhome);
2177: } else {
2178: $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
2179: }
2180: }
2181: my %returnhash;
2182: if ($rep eq '' || $rep =~ /^error: 2 /) {
2183: return %returnhash;
2184: }
2185: my @pairs=split(/\&/,$rep);
2186: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
2187: return @pairs;
2188: }
2189: my $i=0;
2190: foreach my $item (@$storearr) {
2191: $returnhash{$item}=&thaw_unescape($pairs[$i]);
2192: $i++;
2193: }
2194: return %returnhash;
2195: } else {
2196: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
2197: }
2198: }
2199:
2200: # -------------------------------------------- put items in domain db files
2201:
2202: sub put_dom {
2203: my ($namespace,$storehash,$udom,$uhome)=@_;
2204: if (!$udom) {
2205: $udom=$env{'user.domain'};
2206: if (defined(&domain($udom,'primary'))) {
2207: $uhome=&domain($udom,'primary');
2208: } else {
2209: undef($uhome);
2210: }
2211: } else {
2212: if (!$uhome) {
2213: if (defined(&domain($udom,'primary'))) {
2214: $uhome=&domain($udom,'primary');
2215: }
2216: }
2217: }
2218: if ($udom && $uhome && ($uhome ne 'no_host')) {
2219: my $items='';
2220: foreach my $item (keys(%$storehash)) {
2221: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
2222: }
2223: $items=~s/\&$//;
2224: if ($namespace =~ /^enc/) {
2225: return &reply("encrypt:putdom:$udom:$namespace:$items",$uhome);
2226: } else {
2227: return &reply("putdom:$udom:$namespace:$items",$uhome);
2228: }
2229: } else {
2230: &logthis("put_dom failed - no homeserver and/or domain");
2231: }
2232: }
2233:
2234: # --------------------- newput for items in db file owned by domainconfig user
2235: sub newput_dom {
2236: my ($namespace,$storehash,$udom) = @_;
2237: my $result;
2238: if (!$udom) {
2239: $udom=$env{'user.domain'};
2240: }
2241: if ($udom) {
2242: my $uname = &get_domainconfiguser($udom);
2243: $result = &newput($namespace,$storehash,$udom,$uname);
2244: }
2245: return $result;
2246: }
2247:
2248: # --------------------- delete for items in db file owned by domainconfig user
2249: sub del_dom {
2250: my ($namespace,$storearr,$udom)=@_;
2251: if (ref($storearr) eq 'ARRAY') {
2252: if (!$udom) {
2253: $udom=$env{'user.domain'};
2254: }
2255: if ($udom) {
2256: my $uname = &get_domainconfiguser($udom);
2257: return &del($namespace,$storearr,$udom,$uname);
2258: }
2259: }
2260: }
2261:
2262: # ----------------------------------construct domainconfig user for a domain
2263: sub get_domainconfiguser {
2264: my ($udom) = @_;
2265: return $udom.'-domainconfig';
2266: }
2267:
2268: sub retrieve_inst_usertypes {
2269: my ($udom) = @_;
2270: my (%returnhash,@order);
2271: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
2272: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
2273: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
2274: return ($domdefs{'inststatustypes'},$domdefs{'inststatusorder'});
2275: } else {
2276: if (defined(&domain($udom,'primary'))) {
2277: my $uhome=&domain($udom,'primary');
2278: my $rep=&reply("inst_usertypes:$udom",$uhome);
2279: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
2280: &logthis("retrieve_inst_usertypes failed - $rep returned from $uhome in domain: $udom");
2281: return (\%returnhash,\@order);
2282: }
2283: my ($hashitems,$orderitems) = split(/:/,$rep);
2284: my @pairs=split(/\&/,$hashitems);
2285: foreach my $item (@pairs) {
2286: my ($key,$value)=split(/=/,$item,2);
2287: $key = &unescape($key);
2288: next if ($key =~ /^error: 2 /);
2289: $returnhash{$key}=&thaw_unescape($value);
2290: }
2291: my @esc_order = split(/\&/,$orderitems);
2292: foreach my $item (@esc_order) {
2293: push(@order,&unescape($item));
2294: }
2295: } else {
2296: &logthis("retrieve_inst_usertypes failed - no primary domain server for $udom");
2297: }
2298: return (\%returnhash,\@order);
2299: }
2300: }
2301:
2302: sub is_domainimage {
2303: my ($url) = @_;
2304: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+[^/]-) {
2305: if (&domain($1) ne '') {
2306: return '1';
2307: }
2308: }
2309: return;
2310: }
2311:
2312: sub inst_directory_query {
2313: my ($srch) = @_;
2314: my $udom = $srch->{'srchdomain'};
2315: my %results;
2316: my $homeserver = &domain($udom,'primary');
2317: my $outcome;
2318: if ($homeserver ne '') {
2319: unless ($homeserver eq $perlvar{'lonHostID'}) {
2320: if ($srch->{'srchby'} eq 'email') {
2321: my $lcrev = &get_server_loncaparev($udom,$homeserver);
2322: my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
2323: if (($major eq '' && $minor eq '') || ($major < 2) ||
2324: (($major == 2) && ($minor < 12))) {
2325: return;
2326: }
2327: }
2328: }
2329: my $queryid=&reply("querysend:instdirsearch:".
2330: &escape($srch->{'srchby'}).':'.
2331: &escape($srch->{'srchterm'}).':'.
2332: &escape($srch->{'srchtype'}),$homeserver);
2333: my $host=&hostname($homeserver);
2334: if ($queryid !~/^\Q$host\E\_/) {
2335: &logthis('institutional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.' in domain '.$udom);
2336: return;
2337: }
2338: my $response = &get_query_reply($queryid);
2339: my $maxtries = 5;
2340: my $tries = 1;
2341: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2342: $response = &get_query_reply($queryid);
2343: $tries ++;
2344: }
2345:
2346: if (!&error($response) && $response ne 'refused') {
2347: if ($response eq 'unavailable') {
2348: $outcome = $response;
2349: } else {
2350: $outcome = 'ok';
2351: my @matches = split(/\n/,$response);
2352: foreach my $match (@matches) {
2353: my ($key,$value) = split(/=/,$match);
2354: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
2355: }
2356: }
2357: }
2358: }
2359: return ($outcome,%results);
2360: }
2361:
2362: sub usersearch {
2363: my ($srch) = @_;
2364: my $dom = $srch->{'srchdomain'};
2365: my %results;
2366: my %libserv = &all_library();
2367: my $query = 'usersearch';
2368: foreach my $tryserver (keys(%libserv)) {
2369: if (&host_domain($tryserver) eq $dom) {
2370: unless ($tryserver eq $perlvar{'lonHostID'}) {
2371: if ($srch->{'srchby'} eq 'email') {
2372: my $lcrev = &get_server_loncaparev($dom,$tryserver);
2373: my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
2374: next if (($major eq '' && $minor eq '') || ($major < 2) ||
2375: (($major == 2) && ($minor < 12)));
2376: }
2377: }
2378: my $host=&hostname($tryserver);
2379: my $queryid=
2380: &reply("querysend:".&escape($query).':'.
2381: &escape($srch->{'srchby'}).':'.
2382: &escape($srch->{'srchtype'}).':'.
2383: &escape($srch->{'srchterm'}),$tryserver);
2384: if ($queryid !~/^\Q$host\E\_/) {
2385: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
2386: next;
2387: }
2388: my $reply = &get_query_reply($queryid);
2389: my $maxtries = 1;
2390: my $tries = 1;
2391: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
2392: $reply = &get_query_reply($queryid);
2393: $tries ++;
2394: }
2395: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
2396: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
2397: } else {
2398: my @matches;
2399: if ($reply =~ /\n/) {
2400: @matches = split(/\n/,$reply);
2401: } else {
2402: @matches = split(/\&/,$reply);
2403: }
2404: foreach my $match (@matches) {
2405: my ($uname,$udom,%userhash);
2406: foreach my $entry (split(/:/,$match)) {
2407: my ($key,$value) =
2408: map {&unescape($_);} split(/=/,$entry);
2409: $userhash{$key} = $value;
2410: if ($key eq 'username') {
2411: $uname = $value;
2412: } elsif ($key eq 'domain') {
2413: $udom = $value;
2414: }
2415: }
2416: $results{$uname.':'.$udom} = \%userhash;
2417: }
2418: }
2419: }
2420: }
2421: return %results;
2422: }
2423:
2424: sub get_instuser {
2425: my ($udom,$uname,$id) = @_;
2426: my $homeserver = &domain($udom,'primary');
2427: my ($outcome,%results);
2428: if ($homeserver ne '') {
2429: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
2430: &escape($id).':'.&escape($udom),$homeserver);
2431: my $host=&hostname($homeserver);
2432: if ($queryid !~/^\Q$host\E\_/) {
2433: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
2434: return;
2435: }
2436: my $response = &get_query_reply($queryid);
2437: my $maxtries = 5;
2438: my $tries = 1;
2439: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2440: $response = &get_query_reply($queryid);
2441: $tries ++;
2442: }
2443: if (!&error($response) && $response ne 'refused') {
2444: if ($response eq 'unavailable') {
2445: $outcome = $response;
2446: } else {
2447: $outcome = 'ok';
2448: my @matches = split(/\n/,$response);
2449: foreach my $match (@matches) {
2450: my ($key,$value) = split(/=/,$match);
2451: $results{&unescape($key)} = &thaw_unescape($value);
2452: }
2453: }
2454: }
2455: }
2456: my %userinfo;
2457: if (ref($results{$uname}) eq 'HASH') {
2458: %userinfo = %{$results{$uname}};
2459: }
2460: return ($outcome,%userinfo);
2461: }
2462:
2463: sub get_multiple_instusers {
2464: my ($udom,$users,$caller) = @_;
2465: my ($outcome,$results);
2466: if (ref($users) eq 'HASH') {
2467: my $count = keys(%{$users});
2468: my $requested = &freeze_escape($users);
2469: my $homeserver = &domain($udom,'primary');
2470: if ($homeserver ne '') {
2471: my $queryid=&reply('querysend:getmultinstusers:::'.$caller.'='.$requested,$homeserver);
2472: my $host=&hostname($homeserver);
2473: if ($queryid !~/^\Q$host\E\_/) {
2474: &logthis('get_multiple_instusers invalid queryid: '.$queryid.
2475: ' for host: '.$homeserver.'in domain '.$udom);
2476: return ($outcome,$results);
2477: }
2478: my $response = &get_query_reply($queryid);
2479: my $maxtries = 5;
2480: if ($count > 100) {
2481: $maxtries = 1+int($count/20);
2482: }
2483: my $tries = 1;
2484: while (($response=~/^timeout/) && ($tries <= $maxtries)) {
2485: $response = &get_query_reply($queryid);
2486: $tries ++;
2487: }
2488: if ($response eq '') {
2489: $results = {};
2490: foreach my $key (keys(%{$users})) {
2491: my ($uname,$id);
2492: if ($caller eq 'id') {
2493: $id = $key;
2494: } else {
2495: $uname = $key;
2496: }
2497: my ($resp,%info) = &get_instuser($udom,$uname,$id);
2498: $outcome = $resp;
2499: if ($resp eq 'ok') {
2500: %{$results} = (%{$results}, %info);
2501: } else {
2502: last;
2503: }
2504: }
2505: } elsif(!&error($response) && ($response ne 'refused')) {
2506: if (($response eq 'unavailable') || ($response eq 'invalid') || ($response eq 'timeout')) {
2507: $outcome = $response;
2508: } else {
2509: ($outcome,my $userdata) = split(/=/,$response,2);
2510: if ($outcome eq 'ok') {
2511: $results = &thaw_unescape($userdata);
2512: }
2513: }
2514: }
2515: }
2516: }
2517: return ($outcome,$results);
2518: }
2519:
2520: sub inst_rulecheck {
2521: my ($udom,$uname,$id,$item,$rules) = @_;
2522: my %returnhash;
2523: if ($udom ne '') {
2524: if (ref($rules) eq 'ARRAY') {
2525: @{$rules} = map {&escape($_);} (@{$rules});
2526: my $rulestr = join(':',@{$rules});
2527: my $homeserver=&domain($udom,'primary');
2528: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2529: my $response;
2530: if ($item eq 'username') {
2531: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
2532: ':'.&escape($uname).':'.$rulestr,
2533: $homeserver));
2534: } elsif ($item eq 'id') {
2535: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
2536: ':'.&escape($id).':'.$rulestr,
2537: $homeserver));
2538: } elsif ($item eq 'selfcreate') {
2539: $response=&unescape(&reply('instselfcreatecheck:'.
2540: &escape($udom).':'.&escape($uname).
2541: ':'.$rulestr,$homeserver));
2542: }
2543: if ($response ne 'refused') {
2544: my @pairs=split(/\&/,$response);
2545: foreach my $item (@pairs) {
2546: my ($key,$value)=split(/=/,$item,2);
2547: $key = &unescape($key);
2548: next if ($key =~ /^error: 2 /);
2549: $returnhash{$key}=&thaw_unescape($value);
2550: }
2551: }
2552: }
2553: }
2554: }
2555: return %returnhash;
2556: }
2557:
2558: sub inst_userrules {
2559: my ($udom,$check) = @_;
2560: my (%ruleshash,@ruleorder);
2561: if ($udom ne '') {
2562: my $homeserver=&domain($udom,'primary');
2563: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2564: my $response;
2565: if ($check eq 'id') {
2566: $response=&reply('instidrules:'.&escape($udom),
2567: $homeserver);
2568: } elsif ($check eq 'email') {
2569: $response=&reply('instemailrules:'.&escape($udom),
2570: $homeserver);
2571: } else {
2572: $response=&reply('instuserrules:'.&escape($udom),
2573: $homeserver);
2574: }
2575: if (($response ne 'refused') && ($response ne 'error') &&
2576: ($response ne 'unknown_cmd') &&
2577: ($response ne 'no_such_host')) {
2578: my ($hashitems,$orderitems) = split(/:/,$response);
2579: my @pairs=split(/\&/,$hashitems);
2580: foreach my $item (@pairs) {
2581: my ($key,$value)=split(/=/,$item,2);
2582: $key = &unescape($key);
2583: next if ($key =~ /^error: 2 /);
2584: $ruleshash{$key}=&thaw_unescape($value);
2585: }
2586: my @esc_order = split(/\&/,$orderitems);
2587: foreach my $item (@esc_order) {
2588: push(@ruleorder,&unescape($item));
2589: }
2590: }
2591: }
2592: }
2593: return (\%ruleshash,\@ruleorder);
2594: }
2595:
2596: # ------------- Get Authentication, Language and User Tools Defaults for Domain
2597:
2598: sub get_domain_defaults {
2599: my ($domain,$ignore_cache) = @_;
2600: return if (($domain eq '') || ($domain eq 'public'));
2601: my $cachetime = 60*60*24;
2602: unless ($ignore_cache) {
2603: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
2604: if (defined($cached)) {
2605: if (ref($result) eq 'HASH') {
2606: return %{$result};
2607: }
2608: }
2609: }
2610: my %domdefaults;
2611: my %domconfig =
2612: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
2613: 'requestcourses','inststatus',
2614: 'coursedefaults','usersessions',
2615: 'requestauthor','selfenrollment',
2616: 'coursecategories','ssl','autoenroll',
2617: 'trust','helpsettings','wafproxy'],$domain);
2618: my @coursetypes = ('official','unofficial','community','textbook','placement');
2619: if (ref($domconfig{'defaults'}) eq 'HASH') {
2620: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
2621: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
2622: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
2623: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
2624: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
2625: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
2626: $domdefaults{'intauth_cost'} = $domconfig{'defaults'}{'intauth_cost'};
2627: $domdefaults{'intauth_switch'} = $domconfig{'defaults'}{'intauth_switch'};
2628: $domdefaults{'intauth_check'} = $domconfig{'defaults'}{'intauth_check'};
2629: } else {
2630: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
2631: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
2632: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
2633: }
2634: if (ref($domconfig{'quotas'}) eq 'HASH') {
2635: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
2636: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
2637: } else {
2638: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
2639: }
2640: my @usertools = ('aboutme','blog','webdav','portfolio');
2641: foreach my $item (@usertools) {
2642: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
2643: $domdefaults{$item} = $domconfig{'quotas'}{$item};
2644: }
2645: }
2646: if (ref($domconfig{'quotas'}{'authorquota'}) eq 'HASH') {
2647: $domdefaults{'authorquota'} = $domconfig{'quotas'}{'authorquota'};
2648: }
2649: }
2650: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
2651: foreach my $item ('official','unofficial','community','textbook','placement') {
2652: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
2653: }
2654: }
2655: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
2656: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
2657: }
2658: if (ref($domconfig{'inststatus'}) eq 'HASH') {
2659: foreach my $item ('inststatustypes','inststatusorder','inststatusguest') {
2660: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2661: }
2662: }
2663: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2664: $domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
2665: $domdefaults{'usejsme'} = $domconfig{'coursedefaults'}{'usejsme'};
2666: $domdefaults{'uselcmath'} = $domconfig{'coursedefaults'}{'uselcmath'};
2667: if (ref($domconfig{'coursedefaults'}{'postsubmit'}) eq 'HASH') {
2668: $domdefaults{'postsubmit'} = $domconfig{'coursedefaults'}{'postsubmit'}{'client'};
2669: }
2670: foreach my $type (@coursetypes) {
2671: if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
2672: unless ($type eq 'community') {
2673: $domdefaults{$type.'credits'} = $domconfig{'coursedefaults'}{'coursecredits'}{$type};
2674: }
2675: }
2676: if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
2677: $domdefaults{$type.'quota'} = $domconfig{'coursedefaults'}{'uploadquota'}{$type};
2678: }
2679: if ($domdefaults{'postsubmit'} eq 'on') {
2680: if (ref($domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}) eq 'HASH') {
2681: $domdefaults{$type.'postsubtimeout'} =
2682: $domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}{$type};
2683: }
2684: }
2685: }
2686: if (ref($domconfig{'coursedefaults'}{'canclone'}) eq 'HASH') {
2687: if (ref($domconfig{'coursedefaults'}{'canclone'}{'instcode'}) eq 'ARRAY') {
2688: my @clonecodes = @{$domconfig{'coursedefaults'}{'canclone'}{'instcode'}};
2689: if (@clonecodes) {
2690: $domdefaults{'canclone'} = join('+',@clonecodes);
2691: }
2692: }
2693: } elsif ($domconfig{'coursedefaults'}{'canclone'}) {
2694: $domdefaults{'canclone'}=$domconfig{'coursedefaults'}{'canclone'};
2695: }
2696: if ($domconfig{'coursedefaults'}{'texengine'}) {
2697: $domdefaults{'texengine'} = $domconfig{'coursedefaults'}{'texengine'};
2698: }
2699: }
2700: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2701: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2702: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2703: }
2704: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2705: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2706: }
2707: if (ref($domconfig{'usersessions'}{'offloadnow'}) eq 'HASH') {
2708: $domdefaults{'offloadnow'} = $domconfig{'usersessions'}{'offloadnow'};
2709: }
2710: if (ref($domconfig{'usersessions'}{'offloadoth'}) eq 'HASH') {
2711: $domdefaults{'offloadoth'} = $domconfig{'usersessions'}{'offloadoth'};
2712: }
2713: }
2714: if (ref($domconfig{'selfenrollment'}) eq 'HASH') {
2715: if (ref($domconfig{'selfenrollment'}{'admin'}) eq 'HASH') {
2716: my @settings = ('types','registered','enroll_dates','access_dates','section',
2717: 'approval','limit');
2718: foreach my $type (@coursetypes) {
2719: if (ref($domconfig{'selfenrollment'}{'admin'}{$type}) eq 'HASH') {
2720: my @mgrdc = ();
2721: foreach my $item (@settings) {
2722: if ($domconfig{'selfenrollment'}{'admin'}{$type}{$item} eq '0') {
2723: push(@mgrdc,$item);
2724: }
2725: }
2726: if (@mgrdc) {
2727: $domdefaults{$type.'selfenrolladmdc'} = join(',',@mgrdc);
2728: }
2729: }
2730: }
2731: }
2732: if (ref($domconfig{'selfenrollment'}{'default'}) eq 'HASH') {
2733: foreach my $type (@coursetypes) {
2734: if (ref($domconfig{'selfenrollment'}{'default'}{$type}) eq 'HASH') {
2735: foreach my $item (keys(%{$domconfig{'selfenrollment'}{'default'}{$type}})) {
2736: $domdefaults{$type.'selfenroll'.$item} = $domconfig{'selfenrollment'}{'default'}{$type}{$item};
2737: }
2738: }
2739: }
2740: }
2741: }
2742: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
2743: $domdefaults{'catauth'} = 'std';
2744: $domdefaults{'catunauth'} = 'std';
2745: if ($domconfig{'coursecategories'}{'auth'}) {
2746: $domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};
2747: }
2748: if ($domconfig{'coursecategories'}{'unauth'}) {
2749: $domdefaults{'catunauth'} = $domconfig{'coursecategories'}{'unauth'};
2750: }
2751: }
2752: if (ref($domconfig{'ssl'}) eq 'HASH') {
2753: if (ref($domconfig{'ssl'}{'replication'}) eq 'HASH') {
2754: $domdefaults{'replication'} = $domconfig{'ssl'}{'replication'};
2755: }
2756: if (ref($domconfig{'ssl'}{'connto'}) eq 'HASH') {
2757: $domdefaults{'connect'} = $domconfig{'ssl'}{'connto'};
2758: }
2759: if (ref($domconfig{'ssl'}{'connfrom'}) eq 'HASH') {
2760: $domdefaults{'connect'} = $domconfig{'ssl'}{'connfrom'};
2761: }
2762: }
2763: if (ref($domconfig{'trust'}) eq 'HASH') {
2764: my @prefixes = qw(content shared enroll othcoau coaurem domroles catalog reqcrs msg);
2765: foreach my $prefix (@prefixes) {
2766: if (ref($domconfig{'trust'}{$prefix}) eq 'HASH') {
2767: $domdefaults{'trust'.$prefix} = $domconfig{'trust'}{$prefix};
2768: }
2769: }
2770: }
2771: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
2772: $domdefaults{'autofailsafe'} = $domconfig{'autoenroll'}{'autofailsafe'};
2773: }
2774: if (ref($domconfig{'helpsettings'}) eq 'HASH') {
2775: $domdefaults{'submitbugs'} = $domconfig{'helpsettings'}{'submitbugs'};
2776: if (ref($domconfig{'helpsettings'}{'adhoc'}) eq 'HASH') {
2777: $domdefaults{'adhocroles'} = $domconfig{'helpsettings'}{'adhoc'};
2778: }
2779: }
2780: if (ref($domconfig{'wafproxy'}) eq 'HASH') {
2781: foreach my $item ('ipheader','trusted','vpnint','vpnext') {
2782: if ($domconfig{'wafproxy'}{$item}) {
2783: $domdefaults{'waf_'.$item} = $domconfig{'wafproxy'}{$item};
2784: }
2785: }
2786: }
2787: &do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
2788: return %domdefaults;
2789: }
2790:
2791: sub get_dom_cats {
2792: my ($dom) = @_;
2793: return unless (&domain($dom));
2794: my ($cats,$cached)=&is_cached_new('cats',$dom);
2795: unless (defined($cached)) {
2796: my %domconfig = &get_dom('configuration',['coursecategories'],$dom);
2797: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
2798: if (ref($domconfig{'coursecategories'}{'cats'}) eq 'HASH') {
2799: %{$cats} = %{$domconfig{'coursecategories'}{'cats'}};
2800: } else {
2801: $cats = {};
2802: }
2803: } else {
2804: $cats = {};
2805: }
2806: &Apache::lonnet::do_cache_new('cats',$dom,$cats,3600);
2807: }
2808: return $cats;
2809: }
2810:
2811: sub get_dom_instcats {
2812: my ($dom) = @_;
2813: return unless (&domain($dom));
2814: my ($instcats,$cached)=&is_cached_new('instcats',$dom);
2815: unless (defined($cached)) {
2816: my (%coursecodes,%codes,@codetitles,%cat_titles,%cat_order);
2817: my $totcodes = &retrieve_instcodes(\%coursecodes,$dom);
2818: if ($totcodes > 0) {
2819: my $caller = 'global';
2820: if (&auto_instcode_format($caller,$dom,\%coursecodes,\%codes,
2821: \@codetitles,\%cat_titles,\%cat_order) eq 'ok') {
2822: $instcats = {
2823: codes => \%codes,
2824: codetitles => \@codetitles,
2825: cat_titles => \%cat_titles,
2826: cat_order => \%cat_order,
2827: };
2828: &do_cache_new('instcats',$dom,$instcats,3600);
2829: }
2830: }
2831: }
2832: return $instcats;
2833: }
2834:
2835: sub retrieve_instcodes {
2836: my ($coursecodes,$dom) = @_;
2837: my $totcodes;
2838: my %courses = &courseiddump($dom,'.',1,'.','.','.',undef,undef,'Course');
2839: foreach my $course (keys(%courses)) {
2840: if (ref($courses{$course}) eq 'HASH') {
2841: if ($courses{$course}{'inst_code'} ne '') {
2842: $$coursecodes{$course} = $courses{$course}{'inst_code'};
2843: $totcodes ++;
2844: }
2845: }
2846: }
2847: return $totcodes;
2848: }
2849:
2850: sub course_portal_url {
2851: my ($cnum,$cdom) = @_;
2852: my $chome = &homeserver($cnum,$cdom);
2853: my $hostname = &hostname($chome);
2854: my $protocol = $protocol{$chome};
2855: $protocol = 'http' if ($protocol ne 'https');
2856: my %domdefaults = &get_domain_defaults($cdom);
2857: my $firsturl;
2858: if ($domdefaults{'portal_def'}) {
2859: $firsturl = $domdefaults{'portal_def'};
2860: } else {
2861: $firsturl = $protocol.'://'.$hostname;
2862: }
2863: return $firsturl;
2864: }
2865:
2866: # --------------------------------------------- Get domain config for passwords
2867:
2868: sub get_passwdconf {
2869: my ($dom) = @_;
2870: my (%passwdconf,$gotconf,$lookup);
2871: my ($result,$cached)=&is_cached_new('passwdconf',$dom);
2872: if (defined($cached)) {
2873: if (ref($result) eq 'HASH') {
2874: %passwdconf = %{$result};
2875: $gotconf = 1;
2876: }
2877: }
2878: unless ($gotconf) {
2879: my %domconfig = &get_dom('configuration',['passwords'],$dom);
2880: if (ref($domconfig{'passwords'}) eq 'HASH') {
2881: %passwdconf = %{$domconfig{'passwords'}};
2882: }
2883: my $cachetime = 24*60*60;
2884: &do_cache_new('passwdconf',$dom,\%passwdconf,$cachetime);
2885: }
2886: return %passwdconf;
2887: }
2888:
2889: # --------------------------------------------------- Assign a key to a student
2890:
2891: sub assign_access_key {
2892: #
2893: # a valid key looks like uname:udom#comments
2894: # comments are being appended
2895: #
2896: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2897: $kdom=
2898: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2899: $knum=
2900: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2901: $cdom=
2902: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2903: $cnum=
2904: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2905: $udom=$env{'user.name'} unless (defined($udom));
2906: $uname=$env{'user.domain'} unless (defined($uname));
2907: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2908: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2909: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2910: # assigned to this person
2911: # - this should not happen,
2912: # unless something went wrong
2913: # the first time around
2914: # ready to assign
2915: $logentry=$1.'; '.$logentry;
2916: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2917: $kdom,$knum) eq 'ok') {
2918: # key now belongs to user
2919: my $envkey='key.'.$cdom.'_'.$cnum;
2920: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2921: &appenv({'environment.'.$envkey => $ckey});
2922: return 'ok';
2923: } else {
2924: return
2925: 'error: Count not permanently assign key, will need to be re-entered later.';
2926: }
2927: } else {
2928: return 'error: Could not assign key, try again later.';
2929: }
2930: } elsif (!$existing{$ckey}) {
2931: # the key does not exist
2932: return 'error: The key does not exist';
2933: } else {
2934: # the key is somebody else's
2935: return 'error: The key is already in use';
2936: }
2937: }
2938:
2939: # ------------------------------------------ put an additional comment on a key
2940:
2941: sub comment_access_key {
2942: #
2943: # a valid key looks like uname:udom#comments
2944: # comments are being appended
2945: #
2946: my ($ckey,$cdom,$cnum,$logentry)=@_;
2947: $cdom=
2948: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2949: $cnum=
2950: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2951: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2952: if ($existing{$ckey}) {
2953: $existing{$ckey}.='; '.$logentry;
2954: # ready to assign
2955: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2956: $cdom,$cnum) eq 'ok') {
2957: return 'ok';
2958: } else {
2959: return 'error: Count not store comment.';
2960: }
2961: } else {
2962: # the key does not exist
2963: return 'error: The key does not exist';
2964: }
2965: }
2966:
2967: # ------------------------------------------------------ Generate a set of keys
2968:
2969: sub generate_access_keys {
2970: my ($number,$cdom,$cnum,$logentry)=@_;
2971: $cdom=
2972: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2973: $cnum=
2974: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2975: unless (&allowed('mky',$cdom)) { return 0; }
2976: unless (($cdom) && ($cnum)) { return 0; }
2977: if ($number>10000) { return 0; }
2978: sleep(2); # make sure don't get same seed twice
2979: srand(time()^($$+($$<<15))); # from "Programming Perl"
2980: my $total=0;
2981: for (my $i=1;$i<=$number;$i++) {
2982: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2983: sprintf("%lx",int(100000*rand)).'-'.
2984: sprintf("%lx",int(100000*rand));
2985: $newkey=~s/1/g/g; # folks mix up 1 and l
2986: $newkey=~s/0/h/g; # and also 0 and O
2987: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2988: if ($existing{$newkey}) {
2989: $i--;
2990: } else {
2991: if (&put('accesskeys',
2992: { $newkey => '# generated '.localtime().
2993: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2994: '; '.$logentry },
2995: $cdom,$cnum) eq 'ok') {
2996: $total++;
2997: }
2998: }
2999: }
3000: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
3001: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
3002: return $total;
3003: }
3004:
3005: # ------------------------------------------------------- Validate an accesskey
3006:
3007: sub validate_access_key {
3008: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
3009: $cdom=
3010: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
3011: $cnum=
3012: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
3013: $udom=$env{'user.domain'} unless (defined($udom));
3014: $uname=$env{'user.name'} unless (defined($uname));
3015: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
3016: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
3017: }
3018:
3019: # ------------------------------------- Find the section of student in a course
3020: sub devalidate_getsection_cache {
3021: my ($udom,$unam,$courseid)=@_;
3022: my $hashid="$udom:$unam:$courseid";
3023: &devalidate_cache_new('getsection',$hashid);
3024: }
3025:
3026: sub courseid_to_courseurl {
3027: my ($courseid) = @_;
3028: #already url style courseid
3029: return $courseid if ($courseid =~ m{^/});
3030:
3031: if (exists($env{'course.'.$courseid.'.num'})) {
3032: my $cnum = $env{'course.'.$courseid.'.num'};
3033: my $cdom = $env{'course.'.$courseid.'.domain'};
3034: return "/$cdom/$cnum";
3035: }
3036:
3037: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
3038: if (exists($courseinfo{'num'})) {
3039: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
3040: }
3041:
3042: return undef;
3043: }
3044:
3045: sub getsection {
3046: my ($udom,$unam,$courseid)=@_;
3047: my $cachetime=1800;
3048:
3049: my $hashid="$udom:$unam:$courseid";
3050: my ($result,$cached)=&is_cached_new('getsection',$hashid);
3051: if (defined($cached)) { return $result; }
3052:
3053: my %Pending;
3054: my %Expired;
3055: #
3056: # Each role can either have not started yet (pending), be active,
3057: # or have expired.
3058: #
3059: # If there is an active role, we are done.
3060: #
3061: # If there is more than one role which has not started yet,
3062: # choose the one which will start sooner
3063: # If there is one role which has not started yet, return it.
3064: #
3065: # If there is more than one expired role, choose the one which ended last.
3066: # If there is a role which has expired, return it.
3067: #
3068: $courseid = &courseid_to_courseurl($courseid);
3069: my %roleshash = &dump('roles',$udom,$unam,$courseid);
3070: foreach my $key (keys(%roleshash)) {
3071: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
3072: my $section=$1;
3073: if ($key eq $courseid.'_st') { $section=''; }
3074: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
3075: my $now=time;
3076: if (defined($end) && $end && ($now > $end)) {
3077: $Expired{$end}=$section;
3078: next;
3079: }
3080: if (defined($start) && $start && ($now < $start)) {
3081: $Pending{$start}=$section;
3082: next;
3083: }
3084: return &do_cache_new('getsection',$hashid,$section,$cachetime);
3085: }
3086: #
3087: # Presumedly there will be few matching roles from the above
3088: # loop and the sorting time will be negligible.
3089: if (scalar(keys(%Pending))) {
3090: my ($time) = sort {$a <=> $b} keys(%Pending);
3091: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
3092: }
3093: if (scalar(keys(%Expired))) {
3094: my @sorted = sort {$a <=> $b} keys(%Expired);
3095: my $time = pop(@sorted);
3096: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
3097: }
3098: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
3099: }
3100:
3101: sub save_cache {
3102: &purge_remembered();
3103: #&Apache::loncommon::validate_page();
3104: undef(%env);
3105: undef($env_loaded);
3106: }
3107:
3108: my $to_remember=-1;
3109: my %remembered;
3110: my %accessed;
3111: my $kicks=0;
3112: my $hits=0;
3113: sub make_key {
3114: my ($name,$id) = @_;
3115: if (length($id) > 65
3116: && length(&escape($id)) > 200) {
3117: $id=length($id).':'.&Digest::MD5::md5_hex($id);
3118: }
3119: return &escape($name.':'.$id);
3120: }
3121:
3122: sub devalidate_cache_new {
3123: my ($name,$id,$debug) = @_;
3124: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
3125: my $remembered_id=$name.':'.$id;
3126: $id=&make_key($name,$id);
3127: $memcache->delete($id);
3128: delete($remembered{$remembered_id});
3129: delete($accessed{$remembered_id});
3130: }
3131:
3132: sub is_cached_new {
3133: my ($name,$id,$debug) = @_;
3134: my $remembered_id=$name.':'.$id; # this is to avoid make_key (which is slow) whenever possible
3135: if (exists($remembered{$remembered_id})) {
3136: if ($debug) { &Apache::lonnet::logthis("Early return $remembered_id of $remembered{$remembered_id} "); }
3137: $accessed{$remembered_id}=[&gettimeofday()];
3138: $hits++;
3139: return ($remembered{$remembered_id},1);
3140: }
3141: $id=&make_key($name,$id);
3142: my $value = $memcache->get($id);
3143: if (!(defined($value))) {
3144: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
3145: return (undef,undef);
3146: }
3147: if ($value eq '__undef__') {
3148: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
3149: $value=undef;
3150: }
3151: &make_room($remembered_id,$value,$debug);
3152: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
3153: return ($value,1);
3154: }
3155:
3156: sub do_cache_new {
3157: my ($name,$id,$value,$time,$debug) = @_;
3158: my $remembered_id=$name.':'.$id;
3159: $id=&make_key($name,$id);
3160: my $setvalue=$value;
3161: if (!defined($setvalue)) {
3162: $setvalue='__undef__';
3163: }
3164: if (!defined($time) ) {
3165: $time=600;
3166: }
3167: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
3168: my $result = $memcache->set($id,$setvalue,$time);
3169: if (! $result) {
3170: &logthis("caching of id -> $id failed");
3171: $memcache->disconnect_all();
3172: }
3173: # need to make a copy of $value
3174: &make_room($remembered_id,$value,$debug);
3175: return $value;
3176: }
3177:
3178: sub make_room {
3179: my ($remembered_id,$value,$debug)=@_;
3180:
3181: $remembered{$remembered_id}= (ref($value)) ? &Storable::dclone($value)
3182: : $value;
3183: if ($to_remember<0) { return; }
3184: $accessed{$remembered_id}=[&gettimeofday()];
3185: if (scalar(keys(%remembered)) <= $to_remember) { return; }
3186: my $to_kick;
3187: my $max_time=0;
3188: foreach my $other (keys(%accessed)) {
3189: if (&tv_interval($accessed{$other}) > $max_time) {
3190: $to_kick=$other;
3191: $max_time=&tv_interval($accessed{$other});
3192: }
3193: }
3194: delete($remembered{$to_kick});
3195: delete($accessed{$to_kick});
3196: $kicks++;
3197: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
3198: return;
3199: }
3200:
3201: sub purge_remembered {
3202: #&logthis("Tossing ".scalar(keys(%remembered)));
3203: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
3204: undef(%remembered);
3205: undef(%accessed);
3206: }
3207: # ------------------------------------- Read an entry from a user's environment
3208:
3209: sub userenvironment {
3210: my ($udom,$unam,@what)=@_;
3211: my $items;
3212: foreach my $item (@what) {
3213: $items.=&escape($item).'&';
3214: }
3215: $items=~s/\&$//;
3216: my %returnhash=();
3217: my $uhome = &homeserver($unam,$udom);
3218: unless ($uhome eq 'no_host') {
3219: my @answer=split(/\&/,
3220: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
3221: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
3222: return %returnhash;
3223: }
3224: my $i;
3225: for ($i=0;$i<=$#what;$i++) {
3226: $returnhash{$what[$i]}=&unescape($answer[$i]);
3227: }
3228: }
3229: return %returnhash;
3230: }
3231:
3232: # ---------------------------------------------------------- Get a studentphoto
3233: sub studentphoto {
3234: my ($udom,$unam,$ext) = @_;
3235: my $home=&Apache::lonnet::homeserver($unam,$udom);
3236: if (defined($env{'request.course.id'})) {
3237: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
3238: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
3239: return(&retrievestudentphoto($udom,$unam,$ext));
3240: } else {
3241: my ($result,$perm_reqd)=
3242: &Apache::lonnet::auto_photo_permission($unam,$udom);
3243: if ($result eq 'ok') {
3244: if (!($perm_reqd eq 'yes')) {
3245: return(&retrievestudentphoto($udom,$unam,$ext));
3246: }
3247: }
3248: }
3249: }
3250: } else {
3251: my ($result,$perm_reqd) =
3252: &Apache::lonnet::auto_photo_permission($unam,$udom);
3253: if ($result eq 'ok') {
3254: if (!($perm_reqd eq 'yes')) {
3255: return(&retrievestudentphoto($udom,$unam,$ext));
3256: }
3257: }
3258: }
3259: return '/adm/lonKaputt/lonlogo_broken.gif';
3260: }
3261:
3262: sub retrievestudentphoto {
3263: my ($udom,$unam,$ext,$type) = @_;
3264: my $home=&Apache::lonnet::homeserver($unam,$udom);
3265: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
3266: if ($ret eq 'ok') {
3267: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
3268: if ($type eq 'thumbnail') {
3269: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
3270: }
3271: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
3272: return $tokenurl;
3273: } else {
3274: if ($type eq 'thumbnail') {
3275: return '/adm/lonKaputt/genericstudent_tn.gif';
3276: } else {
3277: return '/adm/lonKaputt/lonlogo_broken.gif';
3278: }
3279: }
3280: }
3281:
3282: # -------------------------------------------------------------------- New chat
3283:
3284: sub chatsend {
3285: my ($newentry,$anon,$group)=@_;
3286: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
3287: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3288: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
3289: &reply('chatsend:'.$cdom.':'.$cnum.':'.
3290: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
3291: &escape($newentry)).':'.$group,$chome);
3292: }
3293:
3294: # ------------------------------------------ Find current version of a resource
3295:
3296: sub getversion {
3297: my $fname=&clutter(shift);
3298: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
3299: return ¤tversion(&filelocation('',$fname));
3300: }
3301:
3302: sub currentversion {
3303: my $fname=shift;
3304: my $author=$fname;
3305: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3306: my ($udom,$uname)=split(/\//,$author);
3307: my $home=&homeserver($uname,$udom);
3308: if ($home eq 'no_host') {
3309: return -1;
3310: }
3311: my $answer=&reply("currentversion:$fname",$home);
3312: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3313: return -1;
3314: }
3315: return $answer;
3316: }
3317:
3318: #
3319: # Return special version number of resource if set by override, empty otherwise
3320: #
3321: sub usedversion {
3322: my $fname=shift;
3323: unless ($fname) { $fname=$env{'request.uri'}; }
3324: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
3325: if ($urlversion) { return $urlversion; }
3326: return '';
3327: }
3328:
3329: # ----------------------------- Subscribe to a resource, return URL if possible
3330:
3331: sub subscribe {
3332: my $fname=shift;
3333: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
3334: $fname=~s/[\n\r]//g;
3335: my $author=$fname;
3336: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3337: my ($udom,$uname)=split(/\//,$author);
3338: my $home=homeserver($uname,$udom);
3339: if ($home eq 'no_host') {
3340: return 'not_found';
3341: }
3342: my $answer=reply("sub:$fname",$home);
3343: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3344: $answer.=' by '.$home;
3345: }
3346: return $answer;
3347: }
3348:
3349: # -------------------------------------------------------------- Replicate file
3350:
3351: sub repcopy {
3352: my $filename=shift;
3353: $filename=~s/\/+/\//g;
3354: my $londocroot = $perlvar{'lonDocRoot'};
3355: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
3356: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
3357: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
3358: $filename=~m{^/*(uploaded|editupload)/}) {
3359: return &repcopy_userfile($filename);
3360: }
3361: $filename=~s/[\n\r]//g;
3362: my $transname="$filename.in.transfer";
3363: # FIXME: this should flock
3364: if ((-e $filename) || (-e $transname)) { return 'ok'; }
3365: my $remoteurl=subscribe($filename);
3366: if ($remoteurl =~ /^con_lost by/) {
3367: &logthis("Subscribe returned $remoteurl: $filename");
3368: return 'unavailable';
3369: } elsif ($remoteurl eq 'not_found') {
3370: #&logthis("Subscribe returned not_found: $filename");
3371: return 'not_found';
3372: } elsif ($remoteurl =~ /^rejected by/) {
3373: &logthis("Subscribe returned $remoteurl: $filename");
3374: return 'forbidden';
3375: } elsif ($remoteurl eq 'directory') {
3376: return 'ok';
3377: } else {
3378: my $author=$filename;
3379: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3380: my ($udom,$uname)=split(/\//,$author);
3381: my $home=homeserver($uname,$udom);
3382: unless ($home eq $perlvar{'lonHostID'}) {
3383: my @parts=split(/\//,$filename);
3384: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
3385: if ($path ne "$londocroot/res") {
3386: &logthis("Malconfiguration for replication: $filename");
3387: return 'bad_request';
3388: }
3389: my $count;
3390: for ($count=5;$count<$#parts;$count++) {
3391: $path.="/$parts[$count]";
3392: if ((-e $path)!=1) {
3393: mkdir($path,0777);
3394: }
3395: }
3396: my $request=new HTTP::Request('GET',"$remoteurl");
3397: my $response;
3398: if ($remoteurl =~ m{/raw/}) {
3399: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',0,1);
3400: } else {
3401: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',1);
3402: }
3403: if ($response->is_error()) {
3404: unlink($transname);
3405: my $message=$response->status_line;
3406: &logthis("<font color=\"blue\">WARNING:"
3407: ." LWP get: $message: $filename</font>");
3408: return 'unavailable';
3409: } else {
3410: if ($remoteurl!~/\.meta$/) {
3411: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
3412: my $mresponse;
3413: if ($remoteurl =~ m{/raw/}) {
3414: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',0,1);
3415: } else {
3416: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',1);
3417: }
3418: if ($mresponse->is_error()) {
3419: unlink($filename.'.meta');
3420: &logthis(
3421: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
3422: }
3423: }
3424: rename($transname,$filename);
3425: return 'ok';
3426: }
3427: }
3428: }
3429: }
3430:
3431: # ------------------------------------------------- Unsubscribe from a resource
3432:
3433: sub unsubscribe {
3434: my ($fname) = @_;
3435: my $answer;
3436: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return $answer; }
3437: $fname=~s/[\n\r]//g;
3438: my $author=$fname;
3439: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3440: my ($udom,$uname)=split(/\//,$author);
3441: my $home=homeserver($uname,$udom);
3442: if ($home eq 'no_host') {
3443: $answer = 'no_host';
3444: } elsif (grep { $_ eq $home } ¤t_machine_ids()) {
3445: $answer = 'home';
3446: } else {
3447: my $defdom = $perlvar{'lonDefDomain'};
3448: if (&will_trust('content',$defdom,$udom)) {
3449: $answer = reply("unsub:$fname",$home);
3450: } else {
3451: $answer = 'untrusted';
3452: }
3453: }
3454: return $answer;
3455: }
3456:
3457: # ------------------------------------------------ Get server side include body
3458: sub ssi_body {
3459: my ($filelink,%form)=@_;
3460: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
3461: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
3462: }
3463: my $output='';
3464: my $response;
3465: if ($filelink=~/^https?\:/) {
3466: ($output,$response)=&externalssi($filelink);
3467: } else {
3468: $filelink .= $filelink=~/\?/ ? '&' : '?';
3469: $filelink .= 'inhibitmenu=yes';
3470: ($output,$response)=&ssi($filelink,%form);
3471: }
3472: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
3473: $output=~s/^.*?\<body[^\>]*\>//si;
3474: $output=~s/\<\/body\s*\>.*?$//si;
3475: if (wantarray) {
3476: return ($output, $response);
3477: } else {
3478: return $output;
3479: }
3480: }
3481:
3482: # --------------------------------------------------------- Server Side Include
3483:
3484: sub absolute_url {
3485: my ($host_name) = @_;
3486: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
3487: if ($host_name eq '') {
3488: $host_name = $ENV{'SERVER_NAME'};
3489: }
3490: return $protocol.$host_name;
3491: }
3492:
3493: #
3494: # Server side include.
3495: # Parameters:
3496: # fn Possibly encrypted resource name/id.
3497: # form Hash that describes how the rendering should be done
3498: # and other things.
3499: # Returns:
3500: # Scalar context: The content of the response.
3501: # Array context: 2 element list of the content and the full response object.
3502: #
3503: sub ssi {
3504:
3505: my ($fn,%form)=@_;
3506: my $request;
3507:
3508: $form{'no_update_last_known'}=1;
3509: &Apache::lonenc::check_encrypt(\$fn);
3510: if (%form) {
3511: $request=new HTTP::Request('POST',&absolute_url().$fn);
3512: $request->content(join('&',map {
3513: my $name = escape($_);
3514: "$name=" . ( ref($form{$_}) eq 'ARRAY'
3515: ? join("&$name=", map {escape($_) } @{$form{$_}})
3516: : &escape($form{$_}) );
3517: } keys(%form)));
3518: } else {
3519: $request=new HTTP::Request('GET',&absolute_url().$fn);
3520: }
3521:
3522: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
3523: my $lonhost = $perlvar{'lonHostID'};
3524: my $islocal;
3525: if (($env{'request.course.id'}) &&
3526: ($form{'grade_courseid'} eq $env{'request.course.id'}) &&
3527: ($form{'grade_username'} ne '') && ($form{'grade_domain'} ne '') &&
3528: ($form{'grade_symb'} ne '') &&
3529: (&Apache::lonnet::allowed('mgr',$env{'request.course.id'}.
3530: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:'')))) {
3531: $islocal = 1;
3532: }
3533: my $response= &LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,
3534: '','','',$islocal);
3535:
3536: if (wantarray) {
3537: return ($response->content, $response);
3538: } else {
3539: return $response->content;
3540: }
3541: }
3542:
3543: sub externalssi {
3544: my ($url)=@_;
3545: my $request=new HTTP::Request('GET',$url);
3546: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar);
3547: if (wantarray) {
3548: return ($response->content, $response);
3549: } else {
3550: return $response->content;
3551: }
3552: }
3553:
3554:
3555: # If the local copy of a replicated resource is outdated, trigger a
3556: # connection from the homeserver to flush the delayed queue. If no update
3557: # happens, remove local copies of outdated resource (and corresponding
3558: # metadata file).
3559:
3560: sub remove_stale_resfile {
3561: my ($url) = @_;
3562: my $removed;
3563: if ($url=~m{^/res/($match_domain)/($match_username)/}) {
3564: my $audom = $1;
3565: my $auname = $2;
3566: unless (($url =~ /\.\d+\.\w+$/) || ($url =~ m{^/res/lib/templates/})) {
3567: my $homeserver = &homeserver($auname,$audom);
3568: unless (($homeserver eq 'no_host') ||
3569: (grep { $_ eq $homeserver } ¤t_machine_ids())) {
3570: my $fname = &filelocation('',$url);
3571: if (-e $fname) {
3572: my $hostname = &hostname($homeserver);
3573: if ($hostname) {
3574: my $protocol = $protocol{$homeserver};
3575: $protocol = 'http' if ($protocol ne 'https');
3576: my $uri = &declutter($url);
3577: my $request=new HTTP::Request('HEAD',$protocol.'://'.$hostname.'/raw/'.$uri);
3578: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,5,0,1);
3579: if ($response->is_success()) {
3580: my $remmodtime = &HTTP::Date::str2time( $response->header('Last-modified') );
3581: my $locmodtime = (stat($fname))[9];
3582: if ($locmodtime < $remmodtime) {
3583: my $stale;
3584: my $answer = &reply('pong',$homeserver);
3585: if ($answer eq $homeserver.':'.$perlvar{'lonHostID'}) {
3586: sleep(0.2);
3587: $locmodtime = (stat($fname))[9];
3588: if ($locmodtime < $remmodtime) {
3589: my $posstransfer = $fname.'.in.transfer';
3590: if ((-e $posstransfer) && ($remmodtime < (stat($posstransfer))[9])) {
3591: $removed = 1;
3592: } else {
3593: $stale = 1;
3594: }
3595: } else {
3596: $removed = 1;
3597: }
3598: } else {
3599: $stale = 1;
3600: }
3601: if ($stale) {
3602: if (unlink($fname)) {
3603: if ($uri!~/\.meta$/) {
3604: if (-e $fname.'.meta') {
3605: unlink($fname.'.meta');
3606: }
3607: }
3608: my $unsubresult = &unsubscribe($fname);
3609: unless ($unsubresult eq 'ok') {
3610: &logthis("no unsub of $fname from $homeserver, reason: $unsubresult");
3611: }
3612: $removed = 1;
3613: }
3614: }
3615: }
3616: }
3617: }
3618: }
3619: }
3620: }
3621: }
3622: return $removed;
3623: }
3624:
3625: # -------------------------------- Allow a /uploaded/ URI to be vouched for
3626:
3627: sub allowuploaded {
3628: my ($srcurl,$url)=@_;
3629: $url=&clutter(&declutter($url));
3630: my $dir=$url;
3631: $dir=~s/\/[^\/]+$//;
3632: my %httpref=();
3633: my $httpurl=&hreflocation('',$url);
3634: $httpref{'httpref.'.$httpurl}=$srcurl;
3635: &Apache::lonnet::appenv(\%httpref);
3636: }
3637:
3638: #
3639: # Determine if the current user should be able to edit a particular resource,
3640: # when viewing in course context.
3641: # (a) When viewing resource used to determine if "Edit" item is included in
3642: # Functions.
3643: # (b) When displaying folder contents in course editor, used to determine if
3644: # "Edit" link will be displayed alongside resource.
3645: #
3646: # input: six args -- filename (decluttered), course number, course domain,
3647: # url, symb (if registered) and group (if this is a group
3648: # item -- e.g., bulletin board, group page etc.).
3649: # output: array of five scalars --
3650: # $cfile -- url for file editing if editable on current server
3651: # $home -- homeserver of resource (i.e., for author if published,
3652: # or course if uploaded.).
3653: # $switchserver -- 1 if server switch will be needed.
3654: # $forceedit -- 1 if icon/link should be to go to edit mode
3655: # $forceview -- 1 if icon/link should be to go to view mode
3656: #
3657:
3658: sub can_edit_resource {
3659: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
3660: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
3661: #
3662: # For aboutme pages user can only edit his/her own.
3663: #
3664: if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
3665: my ($sdom,$sname) = ($1,$2);
3666: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
3667: $home = $env{'user.home'};
3668: $cfile = $resurl;
3669: if ($env{'form.forceedit'}) {
3670: $forceview = 1;
3671: } else {
3672: $forceedit = 1;
3673: }
3674: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3675: } else {
3676: return;
3677: }
3678: }
3679:
3680: if ($env{'request.course.id'}) {
3681: my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
3682: if ($group ne '') {
3683: # if this is a group homepage or group bulletin board, check group privs
3684: my $allowed = 0;
3685: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
3686: if ((&allowed('mdg',$env{'request.course.id'}.
3687: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3688: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3689: $allowed = 1;
3690: }
3691: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
3692: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3693: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3694: $allowed = 1;
3695: }
3696: }
3697: if ($allowed) {
3698: $home=&homeserver($cnum,$cdom);
3699: if ($env{'form.forceedit'}) {
3700: $forceview = 1;
3701: } else {
3702: $forceedit = 1;
3703: }
3704: $cfile = $resurl;
3705: } else {
3706: return;
3707: }
3708: } else {
3709: if ($resurl =~ m{^/?adm/viewclasslist$}) {
3710: unless (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
3711: return;
3712: }
3713: } elsif (!$crsedit) {
3714: #
3715: # No edit allowed where CC has switched to student role.
3716: #
3717: return;
3718: }
3719: }
3720: }
3721:
3722: if ($file ne '') {
3723: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
3724: if (&is_course_upload($file,$cnum,$cdom)) {
3725: $uploaded = 1;
3726: $incourse = 1;
3727: if ($file =~/\.(htm|html|css|js|txt)$/) {
3728: $cfile = &hreflocation('',$file);
3729: if ($env{'form.forceedit'}) {
3730: $forceview = 1;
3731: } else {
3732: $forceedit = 1;
3733: }
3734: }
3735: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
3736: $incourse = 1;
3737: if ($env{'form.forceedit'}) {
3738: $forceview = 1;
3739: } else {
3740: $forceedit = 1;
3741: }
3742: $cfile = $resurl;
3743: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
3744: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
3745: $incourse = 1;
3746: if ($env{'form.forceedit'}) {
3747: $forceview = 1;
3748: } else {
3749: $forceedit = 1;
3750: }
3751: $cfile = $resurl;
3752: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem') {
3753: $incourse = 1;
3754: $cfile = $resurl.'/smpedit';
3755: } elsif ($resurl =~ m{^/adm/wrapper/ext/}) {
3756: $incourse = 1;
3757: if ($env{'form.forceedit'}) {
3758: $forceview = 1;
3759: } else {
3760: $forceedit = 1;
3761: }
3762: $cfile = $resurl;
3763: } elsif (($resurl =~ m{^/ext/}) && ($symb ne '')) {
3764: my ($map,$id,$res) = &decode_symb($symb);
3765: if ($map =~ /\.page$/) {
3766: $incourse = 1;
3767: if ($env{'form.forceedit'}) {
3768: $forceview = 1;
3769: $cfile = $map;
3770: } else {
3771: $forceedit = 1;
3772: $cfile = '/adm/wrapper'.$resurl;
3773: }
3774: }
3775: } elsif ($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3776: $incourse = 1;
3777: if ($env{'form.forceedit'}) {
3778: $forceview = 1;
3779: } else {
3780: $forceedit = 1;
3781: }
3782: $cfile = $resurl;
3783: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3784: $incourse = 1;
3785: if ($env{'form.forceedit'}) {
3786: $forceview = 1;
3787: } else {
3788: $forceedit = 1;
3789: }
3790: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3791: }
3792: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
3793: my $template = '/res/lib/templates/simpleproblem.problem';
3794: if (&is_on_map($template)) {
3795: $incourse = 1;
3796: $forceview = 1;
3797: $cfile = $template;
3798: }
3799: } elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3800: $incourse = 1;
3801: if ($env{'form.forceedit'}) {
3802: $forceview = 1;
3803: } else {
3804: $forceedit = 1;
3805: }
3806: $cfile = $resurl;
3807: } elsif (($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3808: $incourse = 1;
3809: if ($env{'form.forceedit'}) {
3810: $forceview = 1;
3811: } else {
3812: $forceedit = 1;
3813: }
3814: $cfile = $resurl;
3815: } elsif (($resurl eq '/adm/extresedit') && ($symb || $env{'form.folderpath'})) {
3816: $incourse = 1;
3817: $forceview = 1;
3818: if ($symb) {
3819: my ($map,$id,$res)=&decode_symb($symb);
3820: $env{'request.symb'} = $symb;
3821: $cfile = &clutter($res);
3822: } else {
3823: $cfile = $env{'form.suppurl'};
3824: my $escfile = &unescape($cfile);
3825: if ($escfile =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3826: $cfile = '/adm/wrapper'.$escfile;
3827: } else {
3828: $escfile =~ s{^http://}{};
3829: $cfile = &escape("/adm/wrapper/ext/$escfile");
3830: }
3831: }
3832: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3833: if ($env{'form.forceedit'}) {
3834: $forceview = 1;
3835: } else {
3836: $forceedit = 1;
3837: }
3838: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3839: }
3840: }
3841: if ($uploaded || $incourse) {
3842: $home=&homeserver($cnum,$cdom);
3843: } elsif ($file !~ m{/$}) {
3844: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
3845: $file=~s{^($match_domain/$match_username)}{/priv/$1};
3846: # Check that the user has permission to edit this resource
3847: my $setpriv = 1;
3848: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
3849: if (defined($cfudom)) {
3850: $home=&homeserver($cfuname,$cfudom);
3851: $cfile=$file;
3852: }
3853: }
3854: if (($cfile ne '') && (!$incourse || $uploaded) &&
3855: (($home ne '') && ($home ne 'no_host'))) {
3856: my @ids=¤t_machine_ids();
3857: unless (grep(/^\Q$home\E$/,@ids)) {
3858: $switchserver=1;
3859: }
3860: }
3861: }
3862: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3863: }
3864:
3865: sub is_course_upload {
3866: my ($file,$cnum,$cdom) = @_;
3867: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
3868: $uploadpath =~ s{^\/}{};
3869: if (($file =~ m{^\Q$uploadpath\E/userfiles/(docs|supplemental)/}) ||
3870: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/})) {
3871: return 1;
3872: }
3873: return;
3874: }
3875:
3876: sub in_course {
3877: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
3878: if ($hideprivileged) {
3879: my $skipuser;
3880: my %coursehash = &coursedescription($cdom.'_'.$cnum);
3881: my @possdoms = ($cdom);
3882: if ($coursehash{'checkforpriv'}) {
3883: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
3884: }
3885: if (&privileged($uname,$udom,\@possdoms)) {
3886: $skipuser = 1;
3887: if ($coursehash{'nothideprivileged'}) {
3888: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3889: my $user;
3890: if ($item =~ /:/) {
3891: $user = $item;
3892: } else {
3893: $user = join(':',split(/[\@]/,$item));
3894: }
3895: if ($user eq $uname.':'.$udom) {
3896: undef($skipuser);
3897: last;
3898: }
3899: }
3900: }
3901: if ($skipuser) {
3902: return 0;
3903: }
3904: }
3905: }
3906: $type ||= 'any';
3907: if (!defined($cdom) || !defined($cnum)) {
3908: my $cid = $env{'request.course.id'};
3909: $cdom = $env{'course.'.$cid.'.domain'};
3910: $cnum = $env{'course.'.$cid.'.num'};
3911: }
3912: my $typesref;
3913: if (($type eq 'any') || ($type eq 'all')) {
3914: $typesref = ['active','previous','future'];
3915: } elsif ($type eq 'previous' || $type eq 'future') {
3916: $typesref = [$type];
3917: }
3918: my %roles = &get_my_roles($uname,$udom,'userroles',
3919: $typesref,undef,[$cdom]);
3920: my ($tmp) = keys(%roles);
3921: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
3922: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
3923: if (@course_roles > 0) {
3924: return 1;
3925: }
3926: return 0;
3927: }
3928:
3929: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
3930: # input: action, courseID, current domain, intended
3931: # path to file, source of file, instruction to parse file for objects,
3932: # ref to hash for embedded objects,
3933: # ref to hash for codebase of java objects.
3934: # reference to scalar to accommodate mime type determined
3935: # from File::MMagic if $parser = parse.
3936: #
3937: # output: url to file (if action was uploaddoc),
3938: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
3939: #
3940: # Allows directory structure to be used within lonUsers/../userfiles/ for a
3941: # course.
3942: #
3943: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3944: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
3945: # course's home server.
3946: #
3947: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
3948: # be copied from $source (current location) to
3949: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3950: # and will then be copied to
3951: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
3952: # course's home server.
3953: #
3954: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3955: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
3956: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3957: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
3958: # in course's home server.
3959: #
3960:
3961: sub process_coursefile {
3962: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
3963: $mimetype)=@_;
3964: my $fetchresult;
3965: my $home=&homeserver($docuname,$docudom);
3966: if ($action eq 'propagate') {
3967: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3968: $home);
3969: } else {
3970: my $fpath = '';
3971: my $fname = $file;
3972: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3973: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3974: my $filepath = &build_filepath($fpath);
3975: if ($action eq 'copy') {
3976: if ($source eq '') {
3977: $fetchresult = 'no source file';
3978: return $fetchresult;
3979: } else {
3980: my $destination = $filepath.'/'.$fname;
3981: rename($source,$destination);
3982: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3983: $home);
3984: }
3985: } elsif ($action eq 'uploaddoc') {
3986: open(my $fh,'>',$filepath.'/'.$fname);
3987: print $fh $env{'form.'.$source};
3988: close($fh);
3989: if ($parser eq 'parse') {
3990: my $mm = new File::MMagic;
3991: my $type = $mm->checktype_filename($filepath.'/'.$fname);
3992: if ($type eq 'text/html') {
3993: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
3994: unless ($parse_result eq 'ok') {
3995: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
3996: }
3997: }
3998: if (ref($mimetype)) {
3999: $$mimetype = $type;
4000: }
4001: }
4002: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
4003: $home);
4004: if ($fetchresult eq 'ok') {
4005: return '/uploaded/'.$fpath.'/'.$fname;
4006: } else {
4007: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
4008: ' to host '.$home.': '.$fetchresult);
4009: return '/adm/notfound.html';
4010: }
4011: }
4012: }
4013: unless ( $fetchresult eq 'ok') {
4014: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
4015: ' to host '.$home.': '.$fetchresult);
4016: }
4017: return $fetchresult;
4018: }
4019:
4020: sub build_filepath {
4021: my ($fpath) = @_;
4022: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
4023: unless ($fpath eq '') {
4024: my @parts=split('/',$fpath);
4025: foreach my $part (@parts) {
4026: $filepath.= '/'.$part;
4027: if ((-e $filepath)!=1) {
4028: mkdir($filepath,0777);
4029: }
4030: }
4031: }
4032: return $filepath;
4033: }
4034:
4035: sub store_edited_file {
4036: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
4037: my $file = $primary_url;
4038: $file =~ s#^/uploaded/$docudom/$docuname/##;
4039: my $fpath = '';
4040: my $fname = $file;
4041: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
4042: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
4043: my $filepath = &build_filepath($fpath);
4044: open(my $fh,'>',$filepath.'/'.$fname);
4045: print $fh $content;
4046: close($fh);
4047: my $home=&homeserver($docuname,$docudom);
4048: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
4049: $home);
4050: if ($$fetchresult eq 'ok') {
4051: return '/uploaded/'.$fpath.'/'.$fname;
4052: } else {
4053: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
4054: ' to host '.$home.': '.$$fetchresult);
4055: return '/adm/notfound.html';
4056: }
4057: }
4058:
4059: sub clean_filename {
4060: my ($fname,$args)=@_;
4061: # Replace Windows backslashes by forward slashes
4062: $fname=~s/\\/\//g;
4063: if (!$args->{'keep_path'}) {
4064: # Get rid of everything but the actual filename
4065: $fname=~s/^.*\/([^\/]+)$/$1/;
4066: }
4067: # Replace spaces by underscores
4068: $fname=~s/\s+/\_/g;
4069: # Transliterate non-ascii text to ascii
4070: my $lang = &Apache::lonlocal::current_language();
4071: $fname = &LONCAPA::transliterate::fname_to_ascii($fname,$lang);
4072: # Replace all other weird characters by nothing
4073: $fname=~s{[^/\w\.\-]}{}g;
4074: # Replace all .\d. sequences with _\d. so they no longer look like version
4075: # numbers
4076: $fname=~s/\.(\d+)(?=\.)/_$1/g;
4077: # Replace three or more adjacent underscores with one for consistency
4078: # with loncfile::filename_check() so complete url can be extracted by
4079: # lonnet::decode_symb()
4080: $fname=~s/_{3,}/_/g;
4081: return $fname;
4082: }
4083:
4084: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
4085: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
4086: # image with the same aspect ratio as the original, but with dimensions which do
4087: # not exceed $resizewidth and $resizeheight.
4088:
4089: sub resizeImage {
4090: my ($img_path,$resizewidth,$resizeheight) = @_;
4091: my $ima = Image::Magick->new;
4092: my $resized;
4093: if (-e $img_path) {
4094: $ima->Read($img_path);
4095: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
4096: my $width = $ima->Get('width');
4097: my $height = $ima->Get('height');
4098: if ($width > $resizewidth) {
4099: my $factor = $width/$resizewidth;
4100: my $newheight = $height/$factor;
4101: $ima->Scale(width=>$resizewidth,height=>$newheight);
4102: $resized = 1;
4103: }
4104: }
4105: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
4106: my $width = $ima->Get('width');
4107: my $height = $ima->Get('height');
4108: if ($height > $resizeheight) {
4109: my $factor = $height/$resizeheight;
4110: my $newwidth = $width/$factor;
4111: $ima->Scale(width=>$newwidth,height=>$resizeheight);
4112: $resized = 1;
4113: }
4114: }
4115: if ($resized) {
4116: $ima->Write($img_path);
4117: }
4118: }
4119: return;
4120: }
4121:
4122: # --------------- Take an uploaded file and put it into the userfiles directory
4123: # input: $formname - the contents of the file are in $env{"form.$formname"}
4124: # the desired filename is in $env{"form.$formname.filename"}
4125: # $context - possible values: coursedoc, existingfile, overwrite,
4126: # canceloverwrite, scantron or ''.
4127: # if 'coursedoc': upload to the current course
4128: # if 'existingfile': write file to tmp/overwrites directory
4129: # if 'canceloverwrite': delete file written to tmp/overwrites directory
4130: # $context is passed as argument to &finishuserfileupload
4131: # $subdir - directory in userfile to store the file into
4132: # $parser - instruction to parse file for objects ($parser = parse) or
4133: # if context is 'scantron', $parser is hashref of csv column mapping
4134: # (e.g.,{ PaperID => 0, LastName => 1, FirstName => 2, ID => 3,
4135: # Section => 4, CODE => 5, FirstQuestion => 9 }).
4136: # $allfiles - reference to hash for embedded objects
4137: # $codebase - reference to hash for codebase of java objects
4138: # $desuname - username for permanent storage of uploaded file
4139: # $dsetudom - domain for permanaent storage of uploaded file
4140: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
4141: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
4142: # $resizewidth - width (pixels) to which to resize uploaded image
4143: # $resizeheight - height (pixels) to which to resize uploaded image
4144: # $mimetype - reference to scalar to accommodate mime type determined
4145: # from File::MMagic.
4146: #
4147: # output: url of file in userspace, or error: <message>
4148: # or /adm/notfound.html if failure to upload occurse
4149:
4150: sub userfileupload {
4151: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
4152: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
4153: if (!defined($subdir)) { $subdir='unknown'; }
4154: my $fname=$env{'form.'.$formname.'.filename'};
4155: $fname=&clean_filename($fname);
4156: # See if there is anything left
4157: unless ($fname) { return 'error: no uploaded file'; }
4158: # If filename now begins with a . prepend unix timestamp _ milliseconds
4159: if ($fname =~ /^\./) {
4160: my ($s,$usec) = &gettimeofday();
4161: while (length($usec) < 6) {
4162: $usec = '0'.$usec;
4163: }
4164: $fname = $s.'_'.substr($usec,0,3).$fname;
4165: }
4166: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
4167: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
4168: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
4169: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
4170: my $now = time;
4171: my $filepath;
4172: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
4173: $filepath = 'tmp/helprequests/'.$now;
4174: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
4175: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
4176: '_'.$env{'user.domain'}.'/pending';
4177: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
4178: my ($docuname,$docudom);
4179: if ($destudom =~ /^$match_domain$/) {
4180: $docudom = $destudom;
4181: } else {
4182: $docudom = $env{'user.domain'};
4183: }
4184: if ($destuname =~ /^$match_username$/) {
4185: $docuname = $destuname;
4186: } else {
4187: $docuname = $env{'user.name'};
4188: }
4189: if (exists($env{'form.group'})) {
4190: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4191: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4192: }
4193: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
4194: if ($context eq 'canceloverwrite') {
4195: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
4196: if (-e $tempfile) {
4197: my @info = stat($tempfile);
4198: if ($info[9] eq $env{'form.timestamp'}) {
4199: unlink($tempfile);
4200: }
4201: }
4202: return;
4203: }
4204: }
4205: # Create the directory if not present
4206: my @parts=split(/\//,$filepath);
4207: my $fullpath = $perlvar{'lonDaemons'};
4208: for (my $i=0;$i<@parts;$i++) {
4209: $fullpath .= '/'.$parts[$i];
4210: if ((-e $fullpath)!=1) {
4211: mkdir($fullpath,0777);
4212: }
4213: }
4214: open(my $fh,'>',$fullpath.'/'.$fname);
4215: print $fh $env{'form.'.$formname};
4216: close($fh);
4217: if ($context eq 'existingfile') {
4218: my @info = stat($fullpath.'/'.$fname);
4219: return ($fullpath.'/'.$fname,$info[9]);
4220: } else {
4221: return $fullpath.'/'.$fname;
4222: }
4223: }
4224: if ($subdir eq 'scantron') {
4225: $fname = 'scantron_orig_'.$fname;
4226: } else {
4227: $fname="$subdir/$fname";
4228: }
4229: if ($context eq 'coursedoc') {
4230: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4231: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4232: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
4233: return &finishuserfileupload($docuname,$docudom,
4234: $formname,$fname,$parser,$allfiles,
4235: $codebase,$thumbwidth,$thumbheight,
4236: $resizewidth,$resizeheight,$context,$mimetype);
4237: } else {
4238: if ($env{'form.folder'}) {
4239: $fname=$env{'form.folder'}.'/'.$fname;
4240: }
4241: return &process_coursefile('uploaddoc',$docuname,$docudom,
4242: $fname,$formname,$parser,
4243: $allfiles,$codebase,$mimetype);
4244: }
4245: } elsif (defined($destuname)) {
4246: my $docuname=$destuname;
4247: my $docudom=$destudom;
4248: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
4249: $parser,$allfiles,$codebase,
4250: $thumbwidth,$thumbheight,
4251: $resizewidth,$resizeheight,$context,$mimetype);
4252: } else {
4253: my $docuname=$env{'user.name'};
4254: my $docudom=$env{'user.domain'};
4255: if ((exists($env{'form.group'})) || ($context eq 'syllabus')) {
4256: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4257: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4258: }
4259: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
4260: $parser,$allfiles,$codebase,
4261: $thumbwidth,$thumbheight,
4262: $resizewidth,$resizeheight,$context,$mimetype);
4263: }
4264: }
4265:
4266: sub finishuserfileupload {
4267: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
4268: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
4269: my $path=$docudom.'/'.$docuname.'/';
4270: my $filepath=$perlvar{'lonDocRoot'};
4271:
4272: my ($fnamepath,$file,$fetchthumb);
4273: $file=$fname;
4274: if ($fname=~m|/|) {
4275: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
4276: $path.=$fnamepath.'/';
4277: }
4278: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
4279: my $count;
4280: for ($count=4;$count<=$#parts;$count++) {
4281: $filepath.="/$parts[$count]";
4282: if ((-e $filepath)!=1) {
4283: mkdir($filepath,0777);
4284: }
4285: }
4286:
4287: # Save the file
4288: {
4289: if (!open(FH,'>',$filepath.'/'.$file)) {
4290: &logthis('Failed to create '.$filepath.'/'.$file);
4291: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
4292: return '/adm/notfound.html';
4293: }
4294: if ($context eq 'overwrite') {
4295: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
4296: my $target = $filepath.'/'.$file;
4297: if (-e $source) {
4298: my @info = stat($source);
4299: if ($info[9] eq $env{'form.timestamp'}) {
4300: unless (&File::Copy::move($source,$target)) {
4301: &logthis('Failed to overwrite '.$filepath.'/'.$file);
4302: return "Moving from $source failed";
4303: }
4304: } else {
4305: return "Temporary file: $source had unexpected date/time for last modification";
4306: }
4307: } else {
4308: return "Temporary file: $source missing";
4309: }
4310: } elsif (!print FH ($env{'form.'.$formname})) {
4311: &logthis('Failed to write to '.$filepath.'/'.$file);
4312: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
4313: return '/adm/notfound.html';
4314: }
4315: close(FH);
4316: if ($resizewidth && $resizeheight) {
4317: my $mm = new File::MMagic;
4318: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
4319: if ($mime_type =~ m{^image/}) {
4320: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
4321: }
4322: }
4323: }
4324: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
4325: if (ref($mimetype)) {
4326: if ($$mimetype eq '') {
4327: my $mm = new File::MMagic;
4328: my $type = $mm->checktype_filename($filepath.'/'.$file);
4329: $$mimetype = $type;
4330: }
4331: }
4332: }
4333: if (($context ne 'scantron') && ($parser eq 'parse')) {
4334: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
4335: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
4336: $allfiles,$codebase);
4337: unless ($parse_result eq 'ok') {
4338: &logthis('Failed to parse '.$filepath.$file.
4339: ' for embedded media: '.$parse_result);
4340: }
4341: }
4342: } elsif (($context eq 'scantron') && (ref($parser) eq 'HASH')) {
4343: my $format = $env{'form.scantron_format'};
4344: &bubblesheet_converter($docudom,$filepath.'/'.$file,$parser,$format);
4345: }
4346: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
4347: my $input = $filepath.'/'.$file;
4348: my $output = $filepath.'/'.'tn-'.$file;
4349: my $thumbsize = $thumbwidth.'x'.$thumbheight;
4350: my @args = ('convert','-sample',$thumbsize,$input,$output);
4351: system({$args[0]} @args);
4352: if (-e $filepath.'/'.'tn-'.$file) {
4353: $fetchthumb = 1;
4354: }
4355: }
4356:
4357: # Notify homeserver to grep it
4358: #
4359: my $docuhome=&homeserver($docuname,$docudom);
4360: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
4361: if ($fetchresult eq 'ok') {
4362: if ($fetchthumb) {
4363: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
4364: if ($thumbresult ne 'ok') {
4365: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
4366: $docuhome.': '.$thumbresult);
4367: }
4368: }
4369: #
4370: # Return the URL to it
4371: return '/uploaded/'.$path.$file;
4372: } else {
4373: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
4374: ': '.$fetchresult);
4375: return '/adm/notfound.html';
4376: }
4377: }
4378:
4379: sub extract_embedded_items {
4380: my ($fullpath,$allfiles,$codebase,$content) = @_;
4381: my @state = ();
4382: my (%lastids,%related,%shockwave,%flashvars);
4383: my %javafiles = (
4384: codebase => '',
4385: code => '',
4386: archive => ''
4387: );
4388: my %mediafiles = (
4389: src => '',
4390: movie => '',
4391: );
4392: my $p;
4393: if ($content) {
4394: $p = HTML::LCParser->new($content);
4395: } else {
4396: $p = HTML::LCParser->new($fullpath);
4397: }
4398: while (my $t=$p->get_token()) {
4399: if ($t->[0] eq 'S') {
4400: my ($tagname, $attr) = ($t->[1],$t->[2]);
4401: push(@state, $tagname);
4402: if (lc($tagname) eq 'allow') {
4403: &add_filetype($allfiles,$attr->{'src'},'src');
4404: }
4405: if (lc($tagname) eq 'img') {
4406: &add_filetype($allfiles,$attr->{'src'},'src');
4407: }
4408: if (lc($tagname) eq 'a') {
4409: unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) {
4410: &add_filetype($allfiles,$attr->{'href'},'href');
4411: }
4412: }
4413: if (lc($tagname) eq 'script') {
4414: my $src;
4415: if ($attr->{'archive'} =~ /\.jar$/i) {
4416: &add_filetype($allfiles,$attr->{'archive'},'archive');
4417: } else {
4418: if ($attr->{'src'} ne '') {
4419: $src = $attr->{'src'};
4420: &add_filetype($allfiles,$src,'src');
4421: }
4422: }
4423: my $text = $p->get_trimmed_text();
4424: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
4425: my @swfargs = split(/,/,$1);
4426: foreach my $item (@swfargs) {
4427: $item =~ s/["']//g;
4428: $item =~ s/^\s+//;
4429: $item =~ s/\s+$//;
4430: }
4431: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
4432: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
4433: push(@{$related{$swfargs[0]}},$swfargs[2]);
4434: } else {
4435: $related{$swfargs[0]} = [$swfargs[2]];
4436: }
4437: }
4438: }
4439: }
4440: if (lc($tagname) eq 'link') {
4441: if (lc($attr->{'rel'}) eq 'stylesheet') {
4442: &add_filetype($allfiles,$attr->{'href'},'href');
4443: }
4444: }
4445: if (lc($tagname) eq 'object' ||
4446: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
4447: foreach my $item (keys(%javafiles)) {
4448: $javafiles{$item} = '';
4449: }
4450: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
4451: $lastids{lc($tagname)} = $attr->{'id'};
4452: }
4453: }
4454: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
4455: my $name = lc($attr->{'name'});
4456: foreach my $item (keys(%javafiles)) {
4457: if ($name eq $item) {
4458: $javafiles{$item} = $attr->{'value'};
4459: last;
4460: }
4461: }
4462: my $pathfrom;
4463: foreach my $item (keys(%mediafiles)) {
4464: if ($name eq $item) {
4465: $pathfrom = $attr->{'value'};
4466: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
4467: &add_filetype($allfiles,$pathfrom,$name);
4468: last;
4469: }
4470: }
4471: if ($name eq 'flashvars') {
4472: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
4473: }
4474: if ($pathfrom ne '') {
4475: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
4476: $pathfrom);
4477: }
4478: }
4479: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
4480: foreach my $item (keys(%javafiles)) {
4481: if ($attr->{$item}) {
4482: $javafiles{$item} = $attr->{$item};
4483: last;
4484: }
4485: }
4486: foreach my $item (keys(%mediafiles)) {
4487: if ($attr->{$item}) {
4488: &add_filetype($allfiles,$attr->{$item},$item);
4489: last;
4490: }
4491: }
4492: if (lc($tagname) eq 'embed') {
4493: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
4494: &embedded_dependency($allfiles,\%related,$attr->{'name'},
4495: $attr->{'src'});
4496: }
4497: }
4498: }
4499: if (lc($tagname) eq 'iframe') {
4500: my $src = $attr->{'src'} ;
4501: if (($src ne '') && ($src !~ m{^(/|https?://)})) {
4502: &add_filetype($allfiles,$src,'src');
4503: } elsif ($src =~ m{^/}) {
4504: if ($env{'request.course.id'}) {
4505: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4506: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4507: my $url = &hreflocation('',$fullpath);
4508: if ($url =~ m{^/uploaded/$cdom/$cnum/docs/(\w+/\d+)/}) {
4509: my $relpath = $1;
4510: if ($src =~ m{^/uploaded/$cdom/$cnum/docs/\Q$relpath\E/(.+)$}) {
4511: &add_filetype($allfiles,$1,'src');
4512: }
4513: }
4514: }
4515: }
4516: }
4517: if ($t->[4] =~ m{/>$}) {
4518: pop(@state);
4519: }
4520: } elsif ($t->[0] eq 'E') {
4521: my ($tagname) = ($t->[1]);
4522: if ($javafiles{'codebase'} ne '') {
4523: $javafiles{'codebase'} .= '/';
4524: }
4525: if (lc($tagname) eq 'applet' ||
4526: lc($tagname) eq 'object' ||
4527: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
4528: ) {
4529: foreach my $item (keys(%javafiles)) {
4530: if ($item ne 'codebase' && $javafiles{$item} ne '') {
4531: my $file=$javafiles{'codebase'}.$javafiles{$item};
4532: &add_filetype($allfiles,$file,$item);
4533: }
4534: }
4535: }
4536: pop @state;
4537: }
4538: }
4539: foreach my $id (sort(keys(%flashvars))) {
4540: if ($shockwave{$id} ne '') {
4541: my @pairs = split(/\&/,$flashvars{$id});
4542: foreach my $pair (@pairs) {
4543: my ($key,$value) = split(/\=/,$pair);
4544: if ($key eq 'thumb') {
4545: &add_filetype($allfiles,$value,$key);
4546: } elsif ($key eq 'content') {
4547: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
4548: my ($ext) = ($value =~ /\.([^.]+)$/);
4549: if ($ext ne '') {
4550: &add_filetype($allfiles,$path.$value,$ext);
4551: }
4552: }
4553: }
4554: }
4555: }
4556: return 'ok';
4557: }
4558:
4559: sub add_filetype {
4560: my ($allfiles,$file,$type)=@_;
4561: if (exists($allfiles->{$file})) {
4562: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
4563: push(@{$allfiles->{$file}}, &escape($type));
4564: }
4565: } else {
4566: @{$allfiles->{$file}} = (&escape($type));
4567: }
4568: }
4569:
4570: sub embedded_dependency {
4571: my ($allfiles,$related,$identifier,$pathfrom) = @_;
4572: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
4573: if (($identifier ne '') &&
4574: (ref($related->{$identifier}) eq 'ARRAY') &&
4575: ($pathfrom ne '')) {
4576: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
4577: foreach my $dep (@{$related->{$identifier}}) {
4578: &add_filetype($allfiles,$path.$dep,'object');
4579: }
4580: }
4581: }
4582: return;
4583: }
4584:
4585: sub bubblesheet_converter {
4586: my ($cdom,$fullpath,$config,$format) = @_;
4587: if ((&domain($cdom) ne '') &&
4588: ($fullpath =~ m{^\Q$perlvar{'lonDocRoot'}/userfiles/$cdom/\E$match_courseid/scantron_orig}) &&
4589: (-e $fullpath) && (ref($config) eq 'HASH') && ($format ne '')) {
4590: my (%csvcols,%csvoptions);
4591: if (ref($config->{'fields'}) eq 'HASH') {
4592: %csvcols = %{$config->{'fields'}};
4593: }
4594: if (ref($config->{'options'}) eq 'HASH') {
4595: %csvoptions = %{$config->{'options'}};
4596: }
4597: my %csvbynum = reverse(%csvcols);
4598: my %scantronconf = &get_scantron_config($format,$cdom);
4599: if (keys(%scantronconf)) {
4600: my %bynum = (
4601: $scantronconf{CODEstart} => 'CODEstart',
4602: $scantronconf{IDstart} => 'IDstart',
4603: $scantronconf{PaperID} => 'PaperID',
4604: $scantronconf{FirstName} => 'FirstName',
4605: $scantronconf{LastName} => 'LastName',
4606: $scantronconf{Qstart} => 'Qstart',
4607: );
4608: my @ordered;
4609: foreach my $item (sort { $a <=> $b } keys(%bynum)) {
4610: push(@ordered,$bynum{$item});
4611: }
4612: my %mapstart = (
4613: CODEstart => 'CODE',
4614: IDstart => 'ID',
4615: PaperID => 'PaperID',
4616: FirstName => 'FirstName',
4617: LastName => 'LastName',
4618: Qstart => 'FirstQuestion',
4619: );
4620: my %maplength = (
4621: CODEstart => 'CODElength',
4622: IDstart => 'IDlength',
4623: PaperID => 'PaperIDlength',
4624: FirstName => 'FirstNamelength',
4625: LastName => 'LastNamelength',
4626: );
4627: if (open(my $fh,'<',$fullpath)) {
4628: my $output;
4629: my %lettdig = &letter_to_digits();
4630: my %diglett = reverse(%lettdig);
4631: my $numletts = scalar(keys(%lettdig));
4632: my $num = 0;
4633: while (my $line=<$fh>) {
4634: $num ++;
4635: next if (($num == 1) && ($csvoptions{'hdr'} == 1));
4636: $line =~ s{[\r\n]+$}{};
4637: my %found;
4638: my @values = split(/,/,$line);
4639: my ($qstart,$record);
4640: for (my $i=0; $i<@values; $i++) {
4641: if ((($qstart ne '') && ($i > $qstart)) ||
4642: ($csvbynum{$i} eq 'FirstQuestion')) {
4643: if ($values[$i] eq '') {
4644: $values[$i] = $scantronconf{'Qoff'};
4645: } elsif ($scantronconf{'Qon'} eq 'number') {
4646: if ($values[$i] =~ /^[A-Ja-j]$/) {
4647: $values[$i] = $lettdig{uc($values[$i])};
4648: }
4649: } elsif ($scantronconf{'Qon'} eq 'letter') {
4650: if ($values[$i] =~ /^[0-9]$/) {
4651: $values[$i] = $diglett{$values[$i]};
4652: }
4653: } else {
4654: if ($values[$i] =~ /^[0-9A-Ja-j]$/) {
4655: my $digit;
4656: if ($values[$i] =~ /^[A-Ja-j]$/) {
4657: $digit = $lettdig{uc($values[$i])}-1;
4658: if ($values[$i] eq 'J') {
4659: $digit += $numletts;
4660: }
4661: } elsif ($values[$i] =~ /^[0-9]$/) {
4662: $digit = $values[$i]-1;
4663: if ($values[$i] eq '0') {
4664: $digit += $numletts;
4665: }
4666: }
4667: my $qval='';
4668: for (my $j=0; $j<$scantronconf{'Qlength'}; $j++) {
4669: if ($j == $digit) {
4670: $qval .= $scantronconf{'Qon'};
4671: } else {
4672: $qval .= $scantronconf{'Qoff'};
4673: }
4674: }
4675: $values[$i] = $qval;
4676: }
4677: }
4678: if (length($values[$i]) > $scantronconf{'Qlength'}) {
4679: $values[$i] = substr($values[$i],0,$scantronconf{'Qlength'});
4680: }
4681: my $numblank = $scantronconf{'Qlength'} - length($values[$i]);
4682: if ($numblank > 0) {
4683: $values[$i] .= ($scantronconf{'Qoff'} x $numblank);
4684: }
4685: if ($csvbynum{$i} eq 'FirstQuestion') {
4686: $qstart = $i;
4687: $found{$csvbynum{$i}} = $values[$i];
4688: } else {
4689: $found{'FirstQuestion'} .= $values[$i];
4690: }
4691: } elsif (exists($csvbynum{$i})) {
4692: if ($csvoptions{'rem'}) {
4693: $values[$i] =~ s/^\s+//;
4694: }
4695: if (($csvbynum{$i} eq 'PaperID') && ($csvoptions{'pad'})) {
4696: while (length($values[$i]) < $scantronconf{$maplength{$csvbynum{$i}}}) {
4697: $values[$i] = '0'.$values[$i];
4698: }
4699: }
4700: $found{$csvbynum{$i}} = $values[$i];
4701: }
4702: }
4703: foreach my $item (@ordered) {
4704: my $currlength = 1+length($record);
4705: my $numspaces = $scantronconf{$item} - $currlength;
4706: if ($numspaces > 0) {
4707: $record .= (' ' x $numspaces);
4708: }
4709: if (($mapstart{$item} ne '') && (exists($found{$mapstart{$item}}))) {
4710: unless ($item eq 'Qstart') {
4711: if (length($found{$mapstart{$item}}) > $scantronconf{$maplength{$item}}) {
4712: $found{$mapstart{$item}} = substr($found{$mapstart{$item}},0,$scantronconf{$maplength{$item}});
4713: }
4714: }
4715: $record .= $found{$mapstart{$item}};
4716: }
4717: }
4718: $output .= "$record\n";
4719: }
4720: close($fh);
4721: if ($output) {
4722: if (open(my $fh,'>',$fullpath)) {
4723: print $fh $output;
4724: close($fh);
4725: }
4726: }
4727: }
4728: }
4729: return;
4730: }
4731: }
4732:
4733: sub letter_to_digits {
4734: my %lettdig = (
4735: A => 1,
4736: B => 2,
4737: C => 3,
4738: D => 4,
4739: E => 5,
4740: F => 6,
4741: G => 7,
4742: H => 8,
4743: I => 9,
4744: J => 0,
4745: );
4746: return %lettdig;
4747: }
4748:
4749: sub get_scantron_config {
4750: my ($which,$cdom) = @_;
4751: my @lines = &get_scantronformat_file($cdom);
4752: my %config;
4753: #FIXME probably should move to XML it has already gotten a bit much now
4754: foreach my $line (@lines) {
4755: my ($name,$descrip)=split(/:/,$line);
4756: if ($name ne $which ) { next; }
4757: chomp($line);
4758: my @config=split(/:/,$line);
4759: $config{'name'}=$config[0];
4760: $config{'description'}=$config[1];
4761: $config{'CODElocation'}=$config[2];
4762: $config{'CODEstart'}=$config[3];
4763: $config{'CODElength'}=$config[4];
4764: $config{'IDstart'}=$config[5];
4765: $config{'IDlength'}=$config[6];
4766: $config{'Qstart'}=$config[7];
4767: $config{'Qlength'}=$config[8];
4768: $config{'Qoff'}=$config[9];
4769: $config{'Qon'}=$config[10];
4770: $config{'PaperID'}=$config[11];
4771: $config{'PaperIDlength'}=$config[12];
4772: $config{'FirstName'}=$config[13];
4773: $config{'FirstNamelength'}=$config[14];
4774: $config{'LastName'}=$config[15];
4775: $config{'LastNamelength'}=$config[16];
4776: $config{'BubblesPerRow'}=$config[17];
4777: last;
4778: }
4779: return %config;
4780: }
4781:
4782: sub get_scantronformat_file {
4783: my ($cdom) = @_;
4784: if ($cdom eq '') {
4785: $cdom= $env{'course.'.$env{'request.course.id'}.'.domain'};
4786: }
4787: my %domconfig = &get_dom('configuration',['scantron'],$cdom);
4788: my $gottab = 0;
4789: my @lines;
4790: if (ref($domconfig{'scantron'}) eq 'HASH') {
4791: if ($domconfig{'scantron'}{'scantronformat'} ne '') {
4792: my $formatfile = &getfile($perlvar{'lonDocRoot'}.$domconfig{'scantron'}{'scantronformat'});
4793: if ($formatfile ne '-1') {
4794: @lines = split("\n",$formatfile,-1);
4795: $gottab = 1;
4796: }
4797: }
4798: }
4799: if (!$gottab) {
4800: my $confname = $cdom.'-domainconfig';
4801: my $default = $perlvar{'lonDocRoot'}.'/res/'.$cdom.'/'.$confname.'/default.tab';
4802: my $formatfile = &getfile($default);
4803: if ($formatfile ne '-1') {
4804: @lines = split("\n",$formatfile,-1);
4805: $gottab = 1;
4806: }
4807: }
4808: if (!$gottab) {
4809: my @domains = ¤t_machine_domains();
4810: if (grep(/^\Q$cdom\E$/,@domains)) {
4811: if (open(my $fh,'<',$perlvar{'lonTabDir'}.'/scantronformat.tab')) {
4812: @lines = <$fh>;
4813: close($fh);
4814: }
4815: } else {
4816: if (open(my $fh,'<',$perlvar{'lonTabDir'}.'/default_scantronformat.tab')) {
4817: @lines = <$fh>;
4818: close($fh);
4819: }
4820: }
4821: }
4822: return @lines;
4823: }
4824:
4825: sub removeuploadedurl {
4826: my ($url)=@_;
4827: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
4828: return &removeuserfile($uname,$udom,$fname);
4829: }
4830:
4831: sub removeuserfile {
4832: my ($docuname,$docudom,$fname)=@_;
4833: my $home=&homeserver($docuname,$docudom);
4834: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
4835: if ($result eq 'ok') {
4836: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
4837: my $metafile = $fname.'.meta';
4838: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
4839: my $url = "/uploaded/$docudom/$docuname/$fname";
4840: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
4841: my $sqlresult =
4842: &update_portfolio_table($docuname,$docudom,$file,
4843: 'portfolio_metadata',$group,
4844: 'delete');
4845: }
4846: }
4847: return $result;
4848: }
4849:
4850: sub mkdiruserfile {
4851: my ($docuname,$docudom,$dir)=@_;
4852: my $home=&homeserver($docuname,$docudom);
4853: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
4854: }
4855:
4856: sub renameuserfile {
4857: my ($docuname,$docudom,$old,$new)=@_;
4858: my $home=&homeserver($docuname,$docudom);
4859: my $result = &reply("renameuserfile:$docudom:$docuname:".
4860: &escape("$old").':'.&escape("$new"),$home);
4861: if ($result eq 'ok') {
4862: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
4863: my $oldmeta = $old.'.meta';
4864: my $newmeta = $new.'.meta';
4865: my $metaresult =
4866: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
4867: my $url = "/uploaded/$docudom/$docuname/$old";
4868: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
4869: my $sqlresult =
4870: &update_portfolio_table($docuname,$docudom,$file,
4871: 'portfolio_metadata',$group,
4872: 'delete');
4873: }
4874: }
4875: return $result;
4876: }
4877:
4878: # ------------------------------------------------------------------------- Log
4879:
4880: sub log {
4881: my ($dom,$nam,$hom,$what)=@_;
4882: return critical("log:$dom:$nam:$what",$hom);
4883: }
4884:
4885: # ------------------------------------------------------------------ Course Log
4886: #
4887: # This routine flushes several buffers of non-mission-critical nature
4888: #
4889:
4890: sub flushcourselogs {
4891: &logthis('Flushing log buffers');
4892: #
4893: # course logs
4894: # This is a log of all transactions in a course, which can be used
4895: # for data mining purposes
4896: #
4897: # It also collects the courseid database, which lists last transaction
4898: # times and course titles for all courseids
4899: #
4900: my %courseidbuffer=();
4901: foreach my $crsid (keys(%courselogs)) {
4902: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
4903: &escape($courselogs{$crsid}),
4904: $coursehombuf{$crsid}) eq 'ok') {
4905: delete $courselogs{$crsid};
4906: } else {
4907: &logthis('Failed to flush log buffer for '.$crsid);
4908: if (length($courselogs{$crsid})>40000) {
4909: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
4910: " exceeded maximum size, deleting.</font>");
4911: delete $courselogs{$crsid};
4912: }
4913: }
4914: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
4915: 'description' => $coursedescrbuf{$crsid},
4916: 'inst_code' => $courseinstcodebuf{$crsid},
4917: 'type' => $coursetypebuf{$crsid},
4918: 'owner' => $courseownerbuf{$crsid},
4919: };
4920: }
4921: #
4922: # Write course id database (reverse lookup) to homeserver of courses
4923: # Is used in pickcourse
4924: #
4925: foreach my $crs_home (keys(%courseidbuffer)) {
4926: my $response = &courseidput(&host_domain($crs_home),
4927: $courseidbuffer{$crs_home},
4928: $crs_home,'timeonly');
4929: }
4930: #
4931: # File accesses
4932: # Writes to the dynamic metadata of resources to get hit counts, etc.
4933: #
4934: foreach my $entry (keys(%accesshash)) {
4935: if ($entry =~ /___count$/) {
4936: my ($dom,$name);
4937: ($dom,$name,undef)=
4938: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
4939: if (! defined($dom) || $dom eq '' ||
4940: ! defined($name) || $name eq '') {
4941: my $cid = $env{'request.course.id'};
4942: $dom = $env{'request.'.$cid.'.domain'};
4943: $name = $env{'request.'.$cid.'.num'};
4944: }
4945: my $value = $accesshash{$entry};
4946: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
4947: my %temphash=($url => $value);
4948: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
4949: if ($result eq 'ok') {
4950: delete $accesshash{$entry};
4951: }
4952: } else {
4953: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
4954: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
4955: my %temphash=($entry => $accesshash{$entry});
4956: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
4957: delete $accesshash{$entry};
4958: }
4959: }
4960: }
4961: #
4962: # Roles
4963: # Reverse lookup of user roles for course faculty/staff and co-authorship
4964: #
4965: foreach my $entry (keys(%userrolehash)) {
4966: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
4967: split(/\:/,$entry);
4968: if (&Apache::lonnet::put('nohist_userroles',
4969: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
4970: $rudom,$runame) eq 'ok') {
4971: delete $userrolehash{$entry};
4972: }
4973: }
4974: #
4975: # Reverse lookup of domain roles (dc, ad, li, sc, dh, da, au)
4976: #
4977: my %domrolebuffer = ();
4978: foreach my $entry (keys(%domainrolehash)) {
4979: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
4980: if ($domrolebuffer{$rudom}) {
4981: $domrolebuffer{$rudom}.='&'.&escape($entry).
4982: '='.&escape($domainrolehash{$entry});
4983: } else {
4984: $domrolebuffer{$rudom}.=&escape($entry).
4985: '='.&escape($domainrolehash{$entry});
4986: }
4987: delete $domainrolehash{$entry};
4988: }
4989: foreach my $dom (keys(%domrolebuffer)) {
4990: my %servers;
4991: if (defined(&domain($dom,'primary'))) {
4992: my $primary=&domain($dom,'primary');
4993: my $hostname=&hostname($primary);
4994: $servers{$primary} = $hostname;
4995: } else {
4996: %servers = &get_servers($dom,'library');
4997: }
4998: foreach my $tryserver (keys(%servers)) {
4999: if (&reply('domroleput:'.$dom.':'.
5000: $domrolebuffer{$dom},$tryserver) eq 'ok') {
5001: last;
5002: } else {
5003: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
5004: }
5005: }
5006: }
5007: $dumpcount++;
5008: }
5009:
5010: sub courselog {
5011: my $what=shift;
5012: $what=time.':'.$what;
5013: unless ($env{'request.course.id'}) { return ''; }
5014: $coursedombuf{$env{'request.course.id'}}=
5015: $env{'course.'.$env{'request.course.id'}.'.domain'};
5016: $coursenumbuf{$env{'request.course.id'}}=
5017: $env{'course.'.$env{'request.course.id'}.'.num'};
5018: $coursehombuf{$env{'request.course.id'}}=
5019: $env{'course.'.$env{'request.course.id'}.'.home'};
5020: $coursedescrbuf{$env{'request.course.id'}}=
5021: $env{'course.'.$env{'request.course.id'}.'.description'};
5022: $courseinstcodebuf{$env{'request.course.id'}}=
5023: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
5024: $courseownerbuf{$env{'request.course.id'}}=
5025: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
5026: $coursetypebuf{$env{'request.course.id'}}=
5027: $env{'course.'.$env{'request.course.id'}.'.type'};
5028: if (defined $courselogs{$env{'request.course.id'}}) {
5029: $courselogs{$env{'request.course.id'}}.='&'.$what;
5030: } else {
5031: $courselogs{$env{'request.course.id'}}.=$what;
5032: }
5033: if (length($courselogs{$env{'request.course.id'}})>4048) {
5034: &flushcourselogs();
5035: }
5036: }
5037:
5038: sub courseacclog {
5039: my $fnsymb=shift;
5040: unless ($env{'request.course.id'}) { return ''; }
5041: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
5042: if ($fnsymb=~/$LONCAPA::assess_re/) {
5043: $what.=':POST';
5044: # FIXME: Probably ought to escape things....
5045: foreach my $key (keys(%env)) {
5046: if ($key=~/^form\.(.*)/) {
5047: my $formitem = $1;
5048: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
5049: $what.=':'.$formitem.'='.$env{$key};
5050: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
5051: if ($formitem eq 'proctorpassword') {
5052: $what.=':'.$formitem.'=' . '*' x length($env{$key});
5053: } else {
5054: $what.=':'.$formitem.'='.$env{$key};
5055: }
5056: }
5057: }
5058: }
5059: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
5060: # FIXME: We should not be depending on a form parameter that someone
5061: # editing lonsearchcat.pm might change in the future.
5062: if ($env{'form.phase'} eq 'course_search') {
5063: $what.= ':POST';
5064: # FIXME: Probably ought to escape things....
5065: foreach my $element ('courseexp','crsfulltext','crsrelated',
5066: 'crsdiscuss') {
5067: $what.=':'.$element.'='.$env{'form.'.$element};
5068: }
5069: }
5070: }
5071: &courselog($what);
5072: }
5073:
5074: sub countacc {
5075: my $url=&declutter(shift);
5076: return if (! defined($url) || $url eq '');
5077: unless ($env{'request.course.id'}) { return ''; }
5078: #
5079: # Mark that this url was used in this course
5080: #
5081: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
5082: #
5083: # Increase the access count for this resource in this child process
5084: #
5085: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
5086: $accesshash{$key}++;
5087: }
5088:
5089: sub linklog {
5090: my ($from,$to)=@_;
5091: $from=&declutter($from);
5092: $to=&declutter($to);
5093: $accesshash{$from.'___'.$to.'___comefrom'}=1;
5094: $accesshash{$to.'___'.$from.'___goto'}=1;
5095: }
5096:
5097: sub statslog {
5098: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
5099: if ($users<2) { return; }
5100: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
5101: 'course' => $env{'request.course.id'},
5102: 'sections' => '"all"',
5103: 'num_students' => $users,
5104: 'part' => $part,
5105: 'symb' => $symb,
5106: 'mean_tries' => $av_attempts,
5107: 'deg_of_diff' => $degdiff});
5108: foreach my $key (keys(%dynstore)) {
5109: $accesshash{$key}=$dynstore{$key};
5110: }
5111: }
5112:
5113: sub userrolelog {
5114: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
5115: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
5116: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
5117: $userrolehash
5118: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
5119: =$tend.':'.$tstart;
5120: }
5121: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
5122: $userrolehash
5123: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
5124: =$tend.':'.$tstart;
5125: }
5126: if ($trole =~ /^(dc|ad|li|au|dg|sc|dh|da)/ ) {
5127: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
5128: $domainrolehash
5129: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
5130: = $tend.':'.$tstart;
5131: }
5132: }
5133:
5134: sub courserolelog {
5135: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
5136: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
5137: my $cdom = $1;
5138: my $cnum = $2;
5139: my $sec = $3;
5140: my $namespace = 'rolelog';
5141: my %storehash = (
5142: role => $trole,
5143: start => $tstart,
5144: end => $tend,
5145: selfenroll => $selfenroll,
5146: context => $context,
5147: );
5148: if ($trole eq 'gr') {
5149: $namespace = 'groupslog';
5150: $storehash{'group'} = $sec;
5151: } else {
5152: $storehash{'section'} = $sec;
5153: }
5154: &write_log('course',$namespace,\%storehash,$delflag,$username,
5155: $domain,$cnum,$cdom);
5156: if (($trole ne 'st') || ($sec ne '')) {
5157: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
5158: }
5159: }
5160: return;
5161: }
5162:
5163: sub domainrolelog {
5164: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
5165: if ($area =~ m{^/($match_domain)/$}) {
5166: my $cdom = $1;
5167: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
5168: my $namespace = 'rolelog';
5169: my %storehash = (
5170: role => $trole,
5171: start => $tstart,
5172: end => $tend,
5173: context => $context,
5174: );
5175: &write_log('domain',$namespace,\%storehash,$delflag,$username,
5176: $domain,$domconfiguser,$cdom);
5177: }
5178: return;
5179:
5180: }
5181:
5182: sub coauthorrolelog {
5183: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
5184: if ($area =~ m{^/($match_domain)/($match_username)$}) {
5185: my $audom = $1;
5186: my $auname = $2;
5187: my $namespace = 'rolelog';
5188: my %storehash = (
5189: role => $trole,
5190: start => $tstart,
5191: end => $tend,
5192: context => $context,
5193: );
5194: &write_log('author',$namespace,\%storehash,$delflag,$username,
5195: $domain,$auname,$audom);
5196: }
5197: return;
5198: }
5199:
5200: sub get_course_adv_roles {
5201: my ($cid,$codes) = @_;
5202: $cid=$env{'request.course.id'} unless (defined($cid));
5203: my %coursehash=&coursedescription($cid);
5204: my $crstype = &Apache::loncommon::course_type($cid);
5205: my %nothide=();
5206: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
5207: if ($user !~ /:/) {
5208: $nothide{join(':',split(/[\@]/,$user))}=1;
5209: } else {
5210: $nothide{$user}=1;
5211: }
5212: }
5213: my @possdoms = ($coursehash{'domain'});
5214: if ($coursehash{'checkforpriv'}) {
5215: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
5216: }
5217: my %returnhash=();
5218: my %dumphash=
5219: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
5220: my $now=time;
5221: my %privileged;
5222: foreach my $entry (keys(%dumphash)) {
5223: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
5224: if (($tstart) && ($tstart<0)) { next; }
5225: if (($tend) && ($tend<$now)) { next; }
5226: if (($tstart) && ($now<$tstart)) { next; }
5227: my ($role,$username,$domain,$section)=split(/\:/,$entry);
5228: if ($username eq '' || $domain eq '') { next; }
5229: if ((&privileged($username,$domain,\@possdoms)) &&
5230: (!$nothide{$username.':'.$domain})) { next; }
5231: if ($role eq 'cr') { next; }
5232: if ($codes) {
5233: if ($section) { $role .= ':'.$section; }
5234: if ($returnhash{$role}) {
5235: $returnhash{$role}.=','.$username.':'.$domain;
5236: } else {
5237: $returnhash{$role}=$username.':'.$domain;
5238: }
5239: } else {
5240: my $key=&plaintext($role,$crstype);
5241: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
5242: if ($returnhash{$key}) {
5243: $returnhash{$key}.=','.$username.':'.$domain;
5244: } else {
5245: $returnhash{$key}=$username.':'.$domain;
5246: }
5247: }
5248: }
5249: return %returnhash;
5250: }
5251:
5252: sub get_my_roles {
5253: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
5254: unless (defined($uname)) { $uname=$env{'user.name'}; }
5255: unless (defined($udom)) { $udom=$env{'user.domain'}; }
5256: my (%dumphash,%nothide);
5257: if ($context eq 'userroles') {
5258: %dumphash = &dump('roles',$udom,$uname);
5259: } else {
5260: %dumphash = &dump('nohist_userroles',$udom,$uname);
5261: if ($hidepriv) {
5262: my %coursehash=&coursedescription($udom.'_'.$uname);
5263: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
5264: if ($user !~ /:/) {
5265: $nothide{join(':',split(/[\@]/,$user))} = 1;
5266: } else {
5267: $nothide{$user} = 1;
5268: }
5269: }
5270: }
5271: }
5272: my %returnhash=();
5273: my $now=time;
5274: my %privileged;
5275: foreach my $entry (keys(%dumphash)) {
5276: my ($role,$tend,$tstart);
5277: if ($context eq 'userroles') {
5278: next if ($entry =~ /^rolesdef/);
5279: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
5280: } else {
5281: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
5282: }
5283: if (($tstart) && ($tstart<0)) { next; }
5284: my $status = 'active';
5285: if (($tend) && ($tend<=$now)) {
5286: $status = 'previous';
5287: }
5288: if (($tstart) && ($now<$tstart)) {
5289: $status = 'future';
5290: }
5291: if (ref($types) eq 'ARRAY') {
5292: if (!grep(/^\Q$status\E$/,@{$types})) {
5293: next;
5294: }
5295: } else {
5296: if ($status ne 'active') {
5297: next;
5298: }
5299: }
5300: my ($rolecode,$username,$domain,$section,$area);
5301: if ($context eq 'userroles') {
5302: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
5303: (undef,$domain,$username,$section) = split(/\//,$area);
5304: } else {
5305: ($role,$username,$domain,$section) = split(/\:/,$entry);
5306: }
5307: if (ref($roledoms) eq 'ARRAY') {
5308: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
5309: next;
5310: }
5311: }
5312: if (ref($roles) eq 'ARRAY') {
5313: if (!grep(/^\Q$role\E$/,@{$roles})) {
5314: if ($role =~ /^cr\//) {
5315: if (!grep(/^cr$/,@{$roles})) {
5316: next;
5317: }
5318: } elsif ($role =~ /^gr\//) {
5319: if (!grep(/^gr$/,@{$roles})) {
5320: next;
5321: }
5322: } else {
5323: next;
5324: }
5325: }
5326: }
5327: if ($hidepriv) {
5328: my @privroles = ('dc','su');
5329: if ($context eq 'userroles') {
5330: next if (grep(/^\Q$role\E$/,@privroles));
5331: } else {
5332: my $possdoms = [$domain];
5333: if (ref($roledoms) eq 'ARRAY') {
5334: push(@{$possdoms},@{$roledoms});
5335: }
5336: if (&privileged($username,$domain,$possdoms,\@privroles)) {
5337: if (!$nothide{$username.':'.$domain}) {
5338: next;
5339: }
5340: }
5341: }
5342: }
5343: if ($withsec) {
5344: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
5345: $tstart.':'.$tend;
5346: } else {
5347: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
5348: }
5349: }
5350: return %returnhash;
5351: }
5352:
5353: sub get_all_adhocroles {
5354: my ($dom) = @_;
5355: my @roles_by_num = ();
5356: my %domdefaults = &get_domain_defaults($dom);
5357: my (%description,%access_in_dom,%access_info);
5358: if (ref($domdefaults{'adhocroles'}) eq 'HASH') {
5359: my $count = 0;
5360: my %domcurrent = %{$domdefaults{'adhocroles'}};
5361: my %ordered;
5362: foreach my $role (sort(keys(%domcurrent))) {
5363: my ($order,$desc,$access_in_dom);
5364: if (ref($domcurrent{$role}) eq 'HASH') {
5365: $order = $domcurrent{$role}{'order'};
5366: $desc = $domcurrent{$role}{'desc'};
5367: $access_in_dom{$role} = $domcurrent{$role}{'access'};
5368: $access_info{$role} = $domcurrent{$role}{$access_in_dom{$role}};
5369: }
5370: if ($order eq '') {
5371: $order = $count;
5372: }
5373: $ordered{$order} = $role;
5374: if ($desc ne '') {
5375: $description{$role} = $desc;
5376: } else {
5377: $description{$role}= $role;
5378: }
5379: $count++;
5380: }
5381: foreach my $item (sort {$a <=> $b } (keys(%ordered))) {
5382: push(@roles_by_num,$ordered{$item});
5383: }
5384: }
5385: return (\@roles_by_num,\%description,\%access_in_dom,\%access_info);
5386: }
5387:
5388: sub get_my_adhocroles {
5389: my ($cid,$checkreg) = @_;
5390: my ($cdom,$cnum,%info,@possroles,$description,$roles_by_num);
5391: if ($env{'request.course.id'} eq $cid) {
5392: $cdom = $env{'course.'.$cid.'.domain'};
5393: $cnum = $env{'course.'.$cid.'.num'};
5394: $info{'internal.coursecode'} = $env{'course.'.$cid.'.internal.coursecode'};
5395: } elsif ($cid =~ /^($match_domain)_($match_courseid)$/) {
5396: $cdom = $1;
5397: $cnum = $2;
5398: %info = &Apache::lonnet::get('environment',['internal.coursecode'],
5399: $cdom,$cnum);
5400: }
5401: if (($info{'internal.coursecode'} ne '') && ($checkreg)) {
5402: my $user = $env{'user.name'}.':'.$env{'user.domain'};
5403: my %rosterhash = &get('classlist',[$user],$cdom,$cnum);
5404: if ($rosterhash{$user} ne '') {
5405: my $type = (split(/:/,$rosterhash{$user}))[5];
5406: return ([],{}) if ($type eq 'auto');
5407: }
5408: }
5409: if (($cdom ne '') && ($cnum ne '')) {
5410: if (($env{"user.role.dh./$cdom/"}) || ($env{"user.role.da./$cdom/"})) {
5411: my $then=$env{'user.login.time'};
5412: my $update=$env{'user.update.time'};
5413: if (!$update) {
5414: $update = $then;
5415: }
5416: my @liveroles;
5417: foreach my $role ('dh','da') {
5418: if ($env{"user.role.$role./$cdom/"}) {
5419: my ($tstart,$tend)=split(/\./,$env{"user.role.$role./$cdom/"});
5420: my $limit = $update;
5421: if ($env{'request.role'} eq "$role./$cdom/") {
5422: $limit = $then;
5423: }
5424: my $activerole = 1;
5425: if ($tstart && $tstart>$limit) { $activerole = 0; }
5426: if ($tend && $tend <$limit) { $activerole = 0; }
5427: if ($activerole) {
5428: push(@liveroles,$role);
5429: }
5430: }
5431: }
5432: if (@liveroles) {
5433: if (&homeserver($cnum,$cdom) ne 'no_host') {
5434: my ($accessref,$accessinfo,%access_in_dom);
5435: ($roles_by_num,$description,$accessref,$accessinfo) = &get_all_adhocroles($cdom);
5436: if (ref($roles_by_num) eq 'ARRAY') {
5437: if (@{$roles_by_num}) {
5438: my %settings;
5439: if ($env{'request.course.id'} eq $cid) {
5440: foreach my $envkey (keys(%env)) {
5441: if ($envkey =~ /^\Qcourse.$cid.\E(internal\.adhoc.+)$/) {
5442: $settings{$1} = $env{$envkey};
5443: }
5444: }
5445: } else {
5446: %settings = &dump('environment',$cdom,$cnum,'internal\.adhoc');
5447: }
5448: my %setincrs;
5449: if ($settings{'internal.adhocaccess'}) {
5450: map { $setincrs{$_} = 1; } split(/,/,$settings{'internal.adhocaccess'});
5451: }
5452: my @statuses;
5453: if ($env{'environment.inststatus'}) {
5454: @statuses = split(/,/,$env{'environment.inststatus'});
5455: }
5456: my $user = $env{'user.name'}.':'.$env{'user.domain'};
5457: if (ref($accessref) eq 'HASH') {
5458: %access_in_dom = %{$accessref};
5459: }
5460: foreach my $role (@{$roles_by_num}) {
5461: my ($curraccess,@okstatus,@personnel);
5462: if ($setincrs{$role}) {
5463: ($curraccess,my $rest) = split(/=/,$settings{'internal.adhoc.'.$role});
5464: if ($curraccess eq 'status') {
5465: @okstatus = split(/\&/,$rest);
5466: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5467: @personnel = split(/\&/,$rest);
5468: }
5469: } else {
5470: $curraccess = $access_in_dom{$role};
5471: if (ref($accessinfo) eq 'HASH') {
5472: if ($curraccess eq 'status') {
5473: if (ref($accessinfo->{$role}) eq 'ARRAY') {
5474: @okstatus = @{$accessinfo->{$role}};
5475: }
5476: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5477: if (ref($accessinfo->{$role}) eq 'ARRAY') {
5478: @personnel = @{$accessinfo->{$role}};
5479: }
5480: }
5481: }
5482: }
5483: if ($curraccess eq 'none') {
5484: next;
5485: } elsif ($curraccess eq 'all') {
5486: push(@possroles,$role);
5487: } elsif ($curraccess eq 'dh') {
5488: if (grep(/^dh$/,@liveroles)) {
5489: push(@possroles,$role);
5490: } else {
5491: next;
5492: }
5493: } elsif ($curraccess eq 'da') {
5494: if (grep(/^da$/,@liveroles)) {
5495: push(@possroles,$role);
5496: } else {
5497: next;
5498: }
5499: } elsif ($curraccess eq 'status') {
5500: if (@okstatus) {
5501: if (!@statuses) {
5502: if (grep(/^default$/,@okstatus)) {
5503: push(@possroles,$role);
5504: }
5505: } else {
5506: foreach my $status (@okstatus) {
5507: if (grep(/^\Q$status\E$/,@statuses)) {
5508: push(@possroles,$role);
5509: last;
5510: }
5511: }
5512: }
5513: }
5514: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5515: if (grep(/^\Q$user\E$/,@personnel)) {
5516: if ($curraccess eq 'exc') {
5517: push(@possroles,$role);
5518: }
5519: } elsif ($curraccess eq 'inc') {
5520: push(@possroles,$role);
5521: }
5522: }
5523: }
5524: }
5525: }
5526: }
5527: }
5528: }
5529: }
5530: unless (ref($description) eq 'HASH') {
5531: if (ref($roles_by_num) eq 'ARRAY') {
5532: my %desc;
5533: map { $desc{$_} = $_; } (@{$roles_by_num});
5534: $description = \%desc;
5535: } else {
5536: $description = {};
5537: }
5538: }
5539: return (\@possroles,$description);
5540: }
5541:
5542: # ----------------------------------------------------- Frontpage Announcements
5543: #
5544: #
5545:
5546: sub postannounce {
5547: my ($server,$text)=@_;
5548: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
5549: unless ($text=~/\w/) { $text=''; }
5550: return &reply('setannounce:'.&escape($text),$server);
5551: }
5552:
5553: sub getannounce {
5554:
5555: if (open(my $fh,"<",$perlvar{'lonDocRoot'}.'/announcement.txt')) {
5556: my $announcement='';
5557: while (my $line = <$fh>) { $announcement .= $line; }
5558: close($fh);
5559: if ($announcement=~/\w/) {
5560: return
5561: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
5562: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
5563: } else {
5564: return '';
5565: }
5566: } else {
5567: return '';
5568: }
5569: }
5570:
5571: # ---------------------------------------------------------- Course ID routines
5572: # Deal with domain's nohist_courseid.db files
5573: #
5574:
5575: sub courseidput {
5576: my ($domain,$storehash,$coursehome,$caller) = @_;
5577: return unless (ref($storehash) eq 'HASH');
5578: my $outcome;
5579: if ($caller eq 'timeonly') {
5580: my $cids = '';
5581: foreach my $item (keys(%$storehash)) {
5582: $cids.=&escape($item).'&';
5583: }
5584: $cids=~s/\&$//;
5585: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
5586: $coursehome);
5587: } else {
5588: my $items = '';
5589: foreach my $item (keys(%$storehash)) {
5590: $items.= &escape($item).'='.
5591: &freeze_escape($$storehash{$item}).'&';
5592: }
5593: $items=~s/\&$//;
5594: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
5595: $coursehome);
5596: }
5597: if ($outcome eq 'unknown_cmd') {
5598: my $what;
5599: foreach my $cid (keys(%$storehash)) {
5600: $what .= &escape($cid).'=';
5601: foreach my $item ('description','inst_code','owner','type') {
5602: $what .= &escape($storehash->{$cid}{$item}).':';
5603: }
5604: $what =~ s/\:$/&/;
5605: }
5606: $what =~ s/\&$//;
5607: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
5608: } else {
5609: return $outcome;
5610: }
5611: }
5612:
5613: sub courseiddump {
5614: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
5615: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
5616: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
5617: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner,
5618: $hasuniquecode,$reqcrsdom,$reqinstcode)=@_;
5619: my $as_hash = 1;
5620: my %returnhash;
5621: if (!$domfilter) { $domfilter=''; }
5622: my %libserv = &all_library();
5623: foreach my $tryserver (keys(%libserv)) {
5624: if ( ( $hostidflag == 1
5625: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
5626: || (!defined($hostidflag)) ) {
5627:
5628: if (($domfilter eq '') ||
5629: (&host_domain($tryserver) eq $domfilter)) {
5630: my $rep;
5631: if (grep { $_ eq $tryserver } current_machine_ids()) {
5632: $rep = LONCAPA::Lond::dump_course_id_handler(
5633: join(":", (&host_domain($tryserver), $sincefilter,
5634: &escape($descfilter), &escape($instcodefilter),
5635: &escape($ownerfilter), &escape($coursefilter),
5636: &escape($typefilter), &escape($regexp_ok),
5637: $as_hash, &escape($selfenrollonly),
5638: &escape($catfilter), $showhidden, $caller,
5639: &escape($cloner), &escape($cc_clone), $cloneonly,
5640: &escape($createdbefore), &escape($createdafter),
5641: &escape($creationcontext),$domcloner,$hasuniquecode,
5642: $reqcrsdom,&escape($reqinstcode))));
5643: } else {
5644: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
5645: $sincefilter.':'.&escape($descfilter).':'.
5646: &escape($instcodefilter).':'.&escape($ownerfilter).
5647: ':'.&escape($coursefilter).':'.&escape($typefilter).
5648: ':'.&escape($regexp_ok).':'.$as_hash.':'.
5649: &escape($selfenrollonly).':'.&escape($catfilter).':'.
5650: $showhidden.':'.$caller.':'.&escape($cloner).':'.
5651: &escape($cc_clone).':'.$cloneonly.':'.
5652: &escape($createdbefore).':'.&escape($createdafter).':'.
5653: &escape($creationcontext).':'.$domcloner.':'.$hasuniquecode.
5654: ':'.$reqcrsdom.':'.&escape($reqinstcode),$tryserver);
5655: }
5656:
5657: my @pairs=split(/\&/,$rep);
5658: foreach my $item (@pairs) {
5659: my ($key,$value)=split(/\=/,$item,2);
5660: $key = &unescape($key);
5661: next if ($key =~ /^error: 2 /);
5662: my $result = &thaw_unescape($value);
5663: if (ref($result) eq 'HASH') {
5664: $returnhash{$key}=$result;
5665: } else {
5666: my @responses = split(/:/,$value);
5667: my @items = ('description','inst_code','owner','type');
5668: for (my $i=0; $i<@responses; $i++) {
5669: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
5670: }
5671: }
5672: }
5673: }
5674: }
5675: }
5676: return %returnhash;
5677: }
5678:
5679: sub courselastaccess {
5680: my ($cdom,$cnum,$hostidref) = @_;
5681: my %returnhash;
5682: if ($cdom && $cnum) {
5683: my $chome = &homeserver($cnum,$cdom);
5684: if ($chome ne 'no_host') {
5685: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
5686: &extract_lastaccess(\%returnhash,$rep);
5687: }
5688: } else {
5689: if (!$cdom) { $cdom=''; }
5690: my %libserv = &all_library();
5691: foreach my $tryserver (keys(%libserv)) {
5692: if (ref($hostidref) eq 'ARRAY') {
5693: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
5694: }
5695: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
5696: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
5697: &extract_lastaccess(\%returnhash,$rep);
5698: }
5699: }
5700: }
5701: return %returnhash;
5702: }
5703:
5704: sub extract_lastaccess {
5705: my ($returnhash,$rep) = @_;
5706: if (ref($returnhash) eq 'HASH') {
5707: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
5708: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
5709: $rep eq '') {
5710: my @pairs=split(/\&/,$rep);
5711: foreach my $item (@pairs) {
5712: my ($key,$value)=split(/\=/,$item,2);
5713: $key = &unescape($key);
5714: next if ($key =~ /^error: 2 /);
5715: $returnhash->{$key} = &thaw_unescape($value);
5716: }
5717: }
5718: }
5719: return;
5720: }
5721:
5722: # ---------------------------------------------------------- DC e-mail
5723:
5724: sub dcmailput {
5725: my ($domain,$msgid,$message,$server)=@_;
5726: my $status = &Apache::lonnet::critical(
5727: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
5728: &escape($message),$server);
5729: return $status;
5730: }
5731:
5732: sub dcmaildump {
5733: my ($dom,$startdate,$enddate,$senders) = @_;
5734: my %returnhash=();
5735:
5736: if (defined(&domain($dom,'primary'))) {
5737: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
5738: &escape($enddate).':';
5739: my @esc_senders=map { &escape($_)} @$senders;
5740: $cmd.=&escape(join('&',@esc_senders));
5741: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
5742: my ($key,$value) = split(/\=/,$line,2);
5743: if (($key) && ($value)) {
5744: $returnhash{&unescape($key)} = &unescape($value);
5745: }
5746: }
5747: }
5748: return %returnhash;
5749: }
5750: # ---------------------------------------------------------- Domain roles
5751:
5752: sub get_domain_roles {
5753: my ($dom,$roles,$startdate,$enddate)=@_;
5754: if ((!defined($startdate)) || ($startdate eq '')) {
5755: $startdate = '.';
5756: }
5757: if ((!defined($enddate)) || ($enddate eq '')) {
5758: $enddate = '.';
5759: }
5760: my $rolelist;
5761: if (ref($roles) eq 'ARRAY') {
5762: $rolelist = join('&',@{$roles});
5763: }
5764: my %personnel = ();
5765:
5766: my %servers = &get_servers($dom,'library');
5767: foreach my $tryserver (keys(%servers)) {
5768: %{$personnel{$tryserver}}=();
5769: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
5770: &escape($startdate).':'.
5771: &escape($enddate).':'.
5772: &escape($rolelist), $tryserver))) {
5773: my ($key,$value) = split(/\=/,$line,2);
5774: if (($key) && ($value)) {
5775: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
5776: }
5777: }
5778: }
5779: return %personnel;
5780: }
5781:
5782: sub get_active_domroles {
5783: my ($dom,$roles) = @_;
5784: return () unless (ref($roles) eq 'ARRAY');
5785: my $now = time;
5786: my %dompersonnel = &get_domain_roles($dom,$roles,$now,$now);
5787: my %domroles;
5788: foreach my $server (keys(%dompersonnel)) {
5789: foreach my $user (sort(keys(%{$dompersonnel{$server}}))) {
5790: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,$user);
5791: $domroles{$uname.':'.$udom} = $dompersonnel{$server}{$user};
5792: }
5793: }
5794: return %domroles;
5795: }
5796:
5797: # ----------------------------------------------------------- Interval timing
5798:
5799: {
5800: # Caches needed for speedup of navmaps
5801: # We don't want to cache this for very long at all (5 seconds at most)
5802: #
5803: # The user for whom we cache
5804: my $cachedkey='';
5805: # The cached times for this user
5806: my %cachedtimes=();
5807: # When this was last done
5808: my $cachedtime='';
5809:
5810: sub load_all_first_access {
5811: my ($uname,$udom,$ignorecache)=@_;
5812: if (($cachedkey eq $uname.':'.$udom) &&
5813: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'}) &&
5814: (!$ignorecache)) {
5815: return;
5816: }
5817: $cachedtime=time;
5818: $cachedkey=$uname.':'.$udom;
5819: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
5820: }
5821:
5822: sub get_first_access {
5823: my ($type,$argsymb,$argmap,$ignorecache)=@_;
5824: my ($symb,$courseid,$udom,$uname)=&whichuser();
5825: if ($argsymb) { $symb=$argsymb; }
5826: my ($map,$id,$res)=&decode_symb($symb);
5827: if ($argmap) { $map = $argmap; }
5828: if ($type eq 'course') {
5829: $res='course';
5830: } elsif ($type eq 'map') {
5831: $res=&symbread($map);
5832: } else {
5833: $res=$symb;
5834: }
5835: &load_all_first_access($uname,$udom,$ignorecache);
5836: return $cachedtimes{"$courseid\0$res"};
5837: }
5838:
5839: sub set_first_access {
5840: my ($type,$interval)=@_;
5841: my ($symb,$courseid,$udom,$uname)=&whichuser();
5842: my ($map,$id,$res)=&decode_symb($symb);
5843: if ($type eq 'course') {
5844: $res='course';
5845: } elsif ($type eq 'map') {
5846: $res=&symbread($map);
5847: } else {
5848: $res=$symb;
5849: }
5850: $cachedkey='';
5851: my $firstaccess=&get_first_access($type,$symb,$map);
5852: if ($firstaccess) {
5853: &logthis("First access time already set ($firstaccess) when attempting ".
5854: "to set new value (type: $type, extent: $res) for $uname:$udom ".
5855: "in $courseid");
5856: return 'already_set';
5857: } else {
5858: my $start = time;
5859: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
5860: $udom,$uname);
5861: if ($putres eq 'ok') {
5862: &put('timerinterval',{"$courseid\0$res"=>$interval},
5863: $udom,$uname);
5864: &appenv(
5865: {
5866: 'course.'.$courseid.'.firstaccess.'.$res => $start,
5867: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
5868: }
5869: );
5870: if (($cachedtime) && (abs($start-$cachedtime) < 5)) {
5871: $cachedtimes{"$courseid\0$res"} = $start;
5872: }
5873: } elsif ($putres ne 'refused') {
5874: &logthis("Result: $putres when attempting to set first access time ".
5875: "(type: $type, extent: $res) for $uname:$udom in $courseid");
5876: }
5877: return $putres;
5878: }
5879: return 'already_set';
5880: }
5881: }
5882:
5883: # --------------------------------------------- Set Expire Date for Spreadsheet
5884:
5885: sub expirespread {
5886: my ($uname,$udom,$stype,$usymb)=@_;
5887: my $cid=$env{'request.course.id'};
5888: if ($cid) {
5889: my $now=time;
5890: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
5891: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
5892: $env{'course.'.$cid.'.num'}.
5893: ':nohist_expirationdates:'.
5894: &escape($key).'='.$now,
5895: $env{'course.'.$cid.'.home'})
5896: }
5897: return 'ok';
5898: }
5899:
5900: # ----------------------------------------------------- Devalidate Spreadsheets
5901:
5902: sub devalidate {
5903: my ($symb,$uname,$udom)=@_;
5904: my $cid=$env{'request.course.id'};
5905: if ($cid) {
5906: # delete the stored spreadsheets for
5907: # - the student level sheet of this user in course's homespace
5908: # - the assessment level sheet for this resource
5909: # for this user in user's homespace
5910: # - current conditional state info
5911: my $key=$uname.':'.$udom.':';
5912: my $status=
5913: &del('nohist_calculatedsheets',
5914: [$key.'studentcalc:'],
5915: $env{'course.'.$cid.'.domain'},
5916: $env{'course.'.$cid.'.num'})
5917: .' '.
5918: &del('nohist_calculatedsheets_'.$cid,
5919: [$key.'assesscalc:'.$symb],$udom,$uname);
5920: unless ($status eq 'ok ok') {
5921: &logthis('Could not devalidate spreadsheet '.
5922: $uname.' at '.$udom.' for '.
5923: $symb.': '.$status);
5924: }
5925: &delenv('user.state.'.$cid);
5926: }
5927: }
5928:
5929: sub get_scalar {
5930: my ($string,$end) = @_;
5931: my $value;
5932: if ($$string =~ s/^([^&]*?)($end)/$2/) {
5933: $value = $1;
5934: } elsif ($$string =~ s/^([^&]*?)&//) {
5935: $value = $1;
5936: }
5937: return &unescape($value);
5938: }
5939:
5940: sub array2str {
5941: my (@array) = @_;
5942: my $result=&arrayref2str(\@array);
5943: $result=~s/^__ARRAY_REF__//;
5944: $result=~s/__END_ARRAY_REF__$//;
5945: return $result;
5946: }
5947:
5948: sub arrayref2str {
5949: my ($arrayref) = @_;
5950: my $result='__ARRAY_REF__';
5951: foreach my $elem (@$arrayref) {
5952: if(ref($elem) eq 'ARRAY') {
5953: $result.=&arrayref2str($elem).'&';
5954: } elsif(ref($elem) eq 'HASH') {
5955: $result.=&hashref2str($elem).'&';
5956: } elsif(ref($elem)) {
5957: #print("Got a ref of ".(ref($elem))." skipping.");
5958: } else {
5959: $result.=&escape($elem).'&';
5960: }
5961: }
5962: $result=~s/\&$//;
5963: $result .= '__END_ARRAY_REF__';
5964: return $result;
5965: }
5966:
5967: sub hash2str {
5968: my (%hash) = @_;
5969: my $result=&hashref2str(\%hash);
5970: $result=~s/^__HASH_REF__//;
5971: $result=~s/__END_HASH_REF__$//;
5972: return $result;
5973: }
5974:
5975: sub hashref2str {
5976: my ($hashref)=@_;
5977: my $result='__HASH_REF__';
5978: foreach my $key (sort(keys(%$hashref))) {
5979: if (ref($key) eq 'ARRAY') {
5980: $result.=&arrayref2str($key).'=';
5981: } elsif (ref($key) eq 'HASH') {
5982: $result.=&hashref2str($key).'=';
5983: } elsif (ref($key)) {
5984: $result.='=';
5985: #print("Got a ref of ".(ref($key))." skipping.");
5986: } else {
5987: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
5988: }
5989:
5990: if(ref($hashref->{$key}) eq 'ARRAY') {
5991: $result.=&arrayref2str($hashref->{$key}).'&';
5992: } elsif(ref($hashref->{$key}) eq 'HASH') {
5993: $result.=&hashref2str($hashref->{$key}).'&';
5994: } elsif(ref($hashref->{$key})) {
5995: $result.='&';
5996: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
5997: } else {
5998: $result.=&escape($hashref->{$key}).'&';
5999: }
6000: }
6001: $result=~s/\&$//;
6002: $result .= '__END_HASH_REF__';
6003: return $result;
6004: }
6005:
6006: sub str2hash {
6007: my ($string)=@_;
6008: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
6009: return %$hash;
6010: }
6011:
6012: sub str2hashref {
6013: my ($string) = @_;
6014:
6015: my %hash;
6016:
6017: if($string !~ /^__HASH_REF__/) {
6018: if (! ($string eq '' || !defined($string))) {
6019: $hash{'error'}='Not hash reference';
6020: }
6021: return (\%hash, $string);
6022: }
6023:
6024: $string =~ s/^__HASH_REF__//;
6025:
6026: while($string !~ /^__END_HASH_REF__/) {
6027: #key
6028: my $key='';
6029: if($string =~ /^__HASH_REF__/) {
6030: ($key, $string)=&str2hashref($string);
6031: if(defined($key->{'error'})) {
6032: $hash{'error'}='Bad data';
6033: return (\%hash, $string);
6034: }
6035: } elsif($string =~ /^__ARRAY_REF__/) {
6036: ($key, $string)=&str2arrayref($string);
6037: if($key->[0] eq 'Array reference error') {
6038: $hash{'error'}='Bad data';
6039: return (\%hash, $string);
6040: }
6041: } else {
6042: $string =~ s/^(.*?)=//;
6043: $key=&unescape($1);
6044: }
6045: $string =~ s/^=//;
6046:
6047: #value
6048: my $value='';
6049: if($string =~ /^__HASH_REF__/) {
6050: ($value, $string)=&str2hashref($string);
6051: if(defined($value->{'error'})) {
6052: $hash{'error'}='Bad data';
6053: return (\%hash, $string);
6054: }
6055: } elsif($string =~ /^__ARRAY_REF__/) {
6056: ($value, $string)=&str2arrayref($string);
6057: if($value->[0] eq 'Array reference error') {
6058: $hash{'error'}='Bad data';
6059: return (\%hash, $string);
6060: }
6061: } else {
6062: $value=&get_scalar(\$string,'__END_HASH_REF__');
6063: }
6064: $string =~ s/^&//;
6065:
6066: $hash{$key}=$value;
6067: }
6068:
6069: $string =~ s/^__END_HASH_REF__//;
6070:
6071: return (\%hash, $string);
6072: }
6073:
6074: sub str2array {
6075: my ($string)=@_;
6076: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
6077: return @$array;
6078: }
6079:
6080: sub str2arrayref {
6081: my ($string) = @_;
6082: my @array;
6083:
6084: if($string !~ /^__ARRAY_REF__/) {
6085: if (! ($string eq '' || !defined($string))) {
6086: $array[0]='Array reference error';
6087: }
6088: return (\@array, $string);
6089: }
6090:
6091: $string =~ s/^__ARRAY_REF__//;
6092:
6093: while($string !~ /^__END_ARRAY_REF__/) {
6094: my $value='';
6095: if($string =~ /^__HASH_REF__/) {
6096: ($value, $string)=&str2hashref($string);
6097: if(defined($value->{'error'})) {
6098: $array[0] ='Array reference error';
6099: return (\@array, $string);
6100: }
6101: } elsif($string =~ /^__ARRAY_REF__/) {
6102: ($value, $string)=&str2arrayref($string);
6103: if($value->[0] eq 'Array reference error') {
6104: $array[0] ='Array reference error';
6105: return (\@array, $string);
6106: }
6107: } else {
6108: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
6109: }
6110: $string =~ s/^&//;
6111:
6112: push(@array, $value);
6113: }
6114:
6115: $string =~ s/^__END_ARRAY_REF__//;
6116:
6117: return (\@array, $string);
6118: }
6119:
6120: # -------------------------------------------------------------------Temp Store
6121:
6122: sub tmpreset {
6123: my ($symb,$namespace,$domain,$stuname) = @_;
6124: if (!$symb) {
6125: $symb=&symbread();
6126: if (!$symb) { $symb= $env{'request.url'}; }
6127: }
6128: $symb=escape($symb);
6129:
6130: if (!$namespace) { $namespace=$env{'request.state'}; }
6131: $namespace=~s/\//\_/g;
6132: $namespace=~s/\W//g;
6133:
6134: if (!$domain) { $domain=$env{'user.domain'}; }
6135: if (!$stuname) { $stuname=$env{'user.name'}; }
6136: if ($domain eq 'public' && $stuname eq 'public') {
6137: $stuname=&get_requestor_ip();
6138: }
6139: my $path=LONCAPA::tempdir();
6140: my %hash;
6141: if (tie(%hash,'GDBM_File',
6142: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
6143: &GDBM_WRCREAT(),0640)) {
6144: foreach my $key (keys(%hash)) {
6145: if ($key=~ /:$symb/) {
6146: delete($hash{$key});
6147: }
6148: }
6149: }
6150: }
6151:
6152: sub tmpstore {
6153: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
6154:
6155: if (!$symb) {
6156: $symb=&symbread();
6157: if (!$symb) { $symb= $env{'request.url'}; }
6158: }
6159: $symb=escape($symb);
6160:
6161: if (!$namespace) {
6162: # I don't think we would ever want to store this for a course.
6163: # it seems this will only be used if we don't have a course.
6164: #$namespace=$env{'request.course.id'};
6165: #if (!$namespace) {
6166: $namespace=$env{'request.state'};
6167: #}
6168: }
6169: $namespace=~s/\//\_/g;
6170: $namespace=~s/\W//g;
6171: if (!$domain) { $domain=$env{'user.domain'}; }
6172: if (!$stuname) { $stuname=$env{'user.name'}; }
6173: if ($domain eq 'public' && $stuname eq 'public') {
6174: $stuname=&get_requestor_ip();
6175: }
6176: my $now=time;
6177: my %hash;
6178: my $path=LONCAPA::tempdir();
6179: if (tie(%hash,'GDBM_File',
6180: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
6181: &GDBM_WRCREAT(),0640)) {
6182: $hash{"version:$symb"}++;
6183: my $version=$hash{"version:$symb"};
6184: my $allkeys='';
6185: foreach my $key (keys(%$storehash)) {
6186: $allkeys.=$key.':';
6187: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
6188: }
6189: $hash{"$version:$symb:timestamp"}=$now;
6190: $allkeys.='timestamp';
6191: $hash{"$version:keys:$symb"}=$allkeys;
6192: if (untie(%hash)) {
6193: return 'ok';
6194: } else {
6195: return "error:$!";
6196: }
6197: } else {
6198: return "error:$!";
6199: }
6200: }
6201:
6202: # -----------------------------------------------------------------Temp Restore
6203:
6204: sub tmprestore {
6205: my ($symb,$namespace,$domain,$stuname) = @_;
6206:
6207: if (!$symb) {
6208: $symb=&symbread();
6209: if (!$symb) { $symb= $env{'request.url'}; }
6210: }
6211: $symb=escape($symb);
6212:
6213: if (!$namespace) { $namespace=$env{'request.state'}; }
6214:
6215: if (!$domain) { $domain=$env{'user.domain'}; }
6216: if (!$stuname) { $stuname=$env{'user.name'}; }
6217: if ($domain eq 'public' && $stuname eq 'public') {
6218: $stuname=&get_requestor_ip();
6219: }
6220: my %returnhash;
6221: $namespace=~s/\//\_/g;
6222: $namespace=~s/\W//g;
6223: my %hash;
6224: my $path=LONCAPA::tempdir();
6225: if (tie(%hash,'GDBM_File',
6226: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
6227: &GDBM_READER(),0640)) {
6228: my $version=$hash{"version:$symb"};
6229: $returnhash{'version'}=$version;
6230: my $scope;
6231: for ($scope=1;$scope<=$version;$scope++) {
6232: my $vkeys=$hash{"$scope:keys:$symb"};
6233: my @keys=split(/:/,$vkeys);
6234: my $key;
6235: $returnhash{"$scope:keys"}=$vkeys;
6236: foreach $key (@keys) {
6237: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
6238: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
6239: }
6240: }
6241: if (!(untie(%hash))) {
6242: return "error:$!";
6243: }
6244: } else {
6245: return "error:$!";
6246: }
6247: return %returnhash;
6248: }
6249:
6250: # ----------------------------------------------------------------------- Store
6251:
6252: sub store {
6253: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
6254: my $home='';
6255:
6256: if ($stuname) { $home=&homeserver($stuname,$domain); }
6257:
6258: $symb=&symbclean($symb);
6259: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
6260:
6261: if (!$domain) { $domain=$env{'user.domain'}; }
6262: if (!$stuname) { $stuname=$env{'user.name'}; }
6263:
6264: &devalidate($symb,$stuname,$domain);
6265:
6266: $symb=escape($symb);
6267: if (!$namespace) {
6268: unless ($namespace=$env{'request.course.id'}) {
6269: return '';
6270: }
6271: }
6272: if (!$home) { $home=$env{'user.home'}; }
6273:
6274: $$storehash{'ip'}=&get_requestor_ip();
6275: $$storehash{'host'}=$perlvar{'lonHostID'};
6276:
6277: my $namevalue='';
6278: foreach my $key (keys(%$storehash)) {
6279: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6280: }
6281: $namevalue=~s/\&$//;
6282: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
6283: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
6284: }
6285:
6286: # -------------------------------------------------------------- Critical Store
6287:
6288: sub cstore {
6289: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
6290: my $home='';
6291:
6292: if ($stuname) { $home=&homeserver($stuname,$domain); }
6293:
6294: $symb=&symbclean($symb);
6295: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
6296:
6297: if (!$domain) { $domain=$env{'user.domain'}; }
6298: if (!$stuname) { $stuname=$env{'user.name'}; }
6299:
6300: &devalidate($symb,$stuname,$domain);
6301:
6302: $symb=escape($symb);
6303: if (!$namespace) {
6304: unless ($namespace=$env{'request.course.id'}) {
6305: return '';
6306: }
6307: }
6308: if (!$home) { $home=$env{'user.home'}; }
6309:
6310: $$storehash{'ip'}=&get_requestor_ip();
6311: $$storehash{'host'}=$perlvar{'lonHostID'};
6312:
6313: my $namevalue='';
6314: foreach my $key (keys(%$storehash)) {
6315: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6316: }
6317: $namevalue=~s/\&$//;
6318: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
6319: return critical
6320: ("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
6321: }
6322:
6323: # --------------------------------------------------------------------- Restore
6324:
6325: sub restore {
6326: my ($symb,$namespace,$domain,$stuname) = @_;
6327: my $home='';
6328:
6329: if ($stuname) { $home=&homeserver($stuname,$domain); }
6330:
6331: if (!$symb) {
6332: return if ($namespace eq 'courserequests');
6333: unless ($symb=escape(&symbread())) { return ''; }
6334: } else {
6335: unless ($namespace eq 'courserequests') {
6336: $symb=&escape(&symbclean($symb));
6337: }
6338: }
6339: if (!$namespace) {
6340: unless ($namespace=$env{'request.course.id'}) {
6341: return '';
6342: }
6343: }
6344: if (!$domain) { $domain=$env{'user.domain'}; }
6345: if (!$stuname) { $stuname=$env{'user.name'}; }
6346: if (!$home) { $home=$env{'user.home'}; }
6347: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
6348:
6349: my %returnhash=();
6350: foreach my $line (split(/\&/,$answer)) {
6351: my ($name,$value)=split(/\=/,$line);
6352: $returnhash{&unescape($name)}=&thaw_unescape($value);
6353: }
6354: my $version;
6355: for ($version=1;$version<=$returnhash{'version'};$version++) {
6356: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
6357: $returnhash{$item}=$returnhash{$version.':'.$item};
6358: }
6359: }
6360: return %returnhash;
6361: }
6362:
6363: # ---------------------------------------------------------- Course Description
6364: #
6365: #
6366:
6367: sub coursedescription {
6368: my ($courseid,$args)=@_;
6369: $courseid=~s/^\///;
6370: $courseid=~s/\_/\//g;
6371: my ($cdomain,$cnum)=split(/\//,$courseid);
6372: my $chome=&homeserver($cnum,$cdomain);
6373: my $normalid=$cdomain.'_'.$cnum;
6374: # need to always cache even if we get errors otherwise we keep
6375: # trying and trying and trying to get the course description.
6376: my %envhash=();
6377: my %returnhash=();
6378:
6379: my $expiretime=600;
6380: if ($env{'request.course.id'} eq $normalid) {
6381: $expiretime=120;
6382: }
6383:
6384: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
6385: if (!$args->{'freshen_cache'}
6386: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
6387: foreach my $key (keys(%env)) {
6388: next if ($key !~ /^\Q$prefix\E(.*)/);
6389: my ($setting) = $1;
6390: $returnhash{$setting} = $env{$key};
6391: }
6392: return %returnhash;
6393: }
6394:
6395: # get the data again
6396:
6397: if (!$args->{'one_time'}) {
6398: $envhash{'course.'.$normalid.'.last_cache'}=time;
6399: }
6400:
6401: if ($chome ne 'no_host') {
6402: %returnhash=&dump('environment',$cdomain,$cnum);
6403: if (!exists($returnhash{'con_lost'})) {
6404: my $username = $env{'user.name'}; # Defult username
6405: if(defined $args->{'user'}) {
6406: $username = $args->{'user'};
6407: }
6408: $returnhash{'home'}= $chome;
6409: $returnhash{'domain'} = $cdomain;
6410: $returnhash{'num'} = $cnum;
6411: if (!defined($returnhash{'type'})) {
6412: $returnhash{'type'} = 'Course';
6413: }
6414: while (my ($name,$value) = each %returnhash) {
6415: $envhash{'course.'.$normalid.'.'.$name}=$value;
6416: }
6417: $returnhash{'url'}=&clutter($returnhash{'url'});
6418: $returnhash{'fn'}=LONCAPA::tempdir() .
6419: $username.'_'.$cdomain.'_'.$cnum;
6420: $envhash{'course.'.$normalid.'.home'}=$chome;
6421: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
6422: $envhash{'course.'.$normalid.'.num'}=$cnum;
6423: }
6424: }
6425: if (!$args->{'one_time'}) {
6426: &appenv(\%envhash);
6427: }
6428: return %returnhash;
6429: }
6430:
6431: sub update_released_required {
6432: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
6433: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
6434: $cid = $env{'request.course.id'};
6435: $cdom = $env{'course.'.$cid.'.domain'};
6436: $cnum = $env{'course.'.$cid.'.num'};
6437: $chome = $env{'course.'.$cid.'.home'};
6438: }
6439: if ($needsrelease) {
6440: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
6441: my $needsupdate;
6442: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
6443: $needsupdate = 1;
6444: } else {
6445: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
6446: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
6447: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
6448: $needsupdate = 1;
6449: }
6450: }
6451: if ($needsupdate) {
6452: my %needshash = (
6453: 'internal.releaserequired' => $needsrelease,
6454: );
6455: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
6456: if ($putresult eq 'ok') {
6457: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
6458: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
6459: if (ref($crsinfo{$cid}) eq 'HASH') {
6460: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
6461: &courseidput($cdom,\%crsinfo,$chome,'notime');
6462: }
6463: }
6464: }
6465: }
6466: return;
6467: }
6468:
6469: # -------------------------------------------------See if a user is privileged
6470:
6471: sub privileged {
6472: my ($username,$domain,$possdomains,$possroles)=@_;
6473: my $now = time;
6474: my $roles;
6475: if (ref($possroles) eq 'ARRAY') {
6476: $roles = $possroles;
6477: } else {
6478: $roles = ['dc','su'];
6479: }
6480: if (ref($possdomains) eq 'ARRAY') {
6481: my %privileged = &privileged_by_domain($possdomains,$roles);
6482: foreach my $dom (@{$possdomains}) {
6483: if (($username =~ /^$match_username$/) && ($domain =~ /^$match_domain$/) &&
6484: (ref($privileged{$dom}) eq 'HASH')) {
6485: foreach my $role (@{$roles}) {
6486: if (ref($privileged{$dom}{$role}) eq 'HASH') {
6487: if (exists($privileged{$dom}{$role}{$username.':'.$domain})) {
6488: my ($end,$start) = split(/:/,$privileged{$dom}{$role}{$username.':'.$domain});
6489: return 1 unless (($end && $end < $now) ||
6490: ($start && $start > $now));
6491: }
6492: }
6493: }
6494: }
6495: }
6496: } else {
6497: my %rolesdump = &dump("roles", $domain, $username) or return 0;
6498: my $now = time;
6499:
6500: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys(%rolesdump)}) {
6501: my ($trole, $tend, $tstart) = split(/_/, $role);
6502: if (grep(/^\Q$trole\E$/,@{$roles})) {
6503: return 1 unless ($tend && $tend < $now)
6504: or ($tstart && $tstart > $now);
6505: }
6506: }
6507: }
6508: return 0;
6509: }
6510:
6511: sub privileged_by_domain {
6512: my ($domains,$roles) = @_;
6513: my %privileged = ();
6514: my $cachetime = 60*60*24;
6515: my $now = time;
6516: unless ((ref($domains) eq 'ARRAY') && (ref($roles) eq 'ARRAY')) {
6517: return %privileged;
6518: }
6519: foreach my $dom (@{$domains}) {
6520: next if (ref($privileged{$dom}) eq 'HASH');
6521: my $needroles;
6522: foreach my $role (@{$roles}) {
6523: my ($result,$cached)=&is_cached_new('priv_'.$role,$dom);
6524: if (defined($cached)) {
6525: if (ref($result) eq 'HASH') {
6526: $privileged{$dom}{$role} = $result;
6527: }
6528: } else {
6529: $needroles = 1;
6530: }
6531: }
6532: if ($needroles) {
6533: my %dompersonnel = &get_domain_roles($dom,$roles);
6534: $privileged{$dom} = {};
6535: foreach my $server (keys(%dompersonnel)) {
6536: if (ref($dompersonnel{$server}) eq 'HASH') {
6537: foreach my $item (keys(%{$dompersonnel{$server}})) {
6538: my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
6539: my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
6540: next if ($end && $end < $now);
6541: $privileged{$dom}{$trole}{$uname.':'.$udom} =
6542: $dompersonnel{$server}{$item};
6543: }
6544: }
6545: }
6546: if (ref($privileged{$dom}) eq 'HASH') {
6547: foreach my $role (@{$roles}) {
6548: if (ref($privileged{$dom}{$role}) eq 'HASH') {
6549: &do_cache_new('priv_'.$role,$dom,$privileged{$dom}{$role},$cachetime);
6550: } else {
6551: my %hash = ();
6552: &do_cache_new('priv_'.$role,$dom,\%hash,$cachetime);
6553: }
6554: }
6555: }
6556: }
6557: }
6558: return %privileged;
6559: }
6560:
6561: # -------------------------------------------------------- Get user privileges
6562:
6563: sub rolesinit {
6564: my ($domain, $username) = @_;
6565: my %userroles = ('user.login.time' => time);
6566: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
6567:
6568: # firstaccess and timerinterval are related to timed maps/resources.
6569: # also, blocking can be triggered by an activating timer
6570: # it's saved in the user's %env.
6571: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
6572: my %timerinterval = &dump('timerinterval', $domain, $username);
6573: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
6574: %timerintchk, %timerintenv);
6575:
6576: foreach my $key (keys(%firstaccess)) {
6577: my ($cid, $rest) = split(/\0/, $key);
6578: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
6579: }
6580:
6581: foreach my $key (keys(%timerinterval)) {
6582: my ($cid,$rest) = split(/\0/,$key);
6583: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
6584: }
6585:
6586: my %allroles=();
6587: my %allgroups=();
6588:
6589: for my $area (grep { ! /^rolesdef_/ } keys(%rolesdump)) {
6590: my $role = $rolesdump{$area};
6591: $area =~ s/\_\w\w$//;
6592:
6593: my ($trole, $tend, $tstart, $group_privs);
6594:
6595: if ($role =~ /^cr/) {
6596: # Custom role, defined by a user
6597: # e.g., user.role.cr/msu/smith/mynewrole
6598: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
6599: $trole = $1;
6600: ($tend, $tstart) = split('_', $2);
6601: } else {
6602: $trole = $role;
6603: }
6604: } elsif ($role =~ m|^gr/|) {
6605: # Role of member in a group, defined within a course/community
6606: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
6607: ($trole, $tend, $tstart) = split(/_/, $role);
6608: next if $tstart eq '-1';
6609: ($trole, $group_privs) = split(/\//, $trole);
6610: $group_privs = &unescape($group_privs);
6611: } else {
6612: # Just a normal role, defined in roles.tab
6613: ($trole, $tend, $tstart) = split(/_/,$role);
6614: }
6615:
6616: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
6617: $username);
6618: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
6619:
6620: # role expired or not available yet?
6621: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
6622: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
6623:
6624: next if $area eq '' or $trole eq '';
6625:
6626: my $spec = "$trole.$area";
6627: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
6628:
6629: if ($trole =~ /^cr\//) {
6630: # Custom role, defined by a user
6631: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
6632: } elsif ($trole eq 'gr') {
6633: # Role of a member in a group, defined within a course/community
6634: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
6635: next;
6636: } else {
6637: # Normal role, defined in roles.tab
6638: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
6639: }
6640:
6641: my $cid = $tdomain.'_'.$trest;
6642: unless ($firstaccchk{$cid}) {
6643: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
6644: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
6645: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
6646: $coursetimerstarts{$cid}{$item};
6647: }
6648: }
6649: $firstaccchk{$cid} = 1;
6650: }
6651: unless ($timerintchk{$cid}) {
6652: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
6653: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
6654: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
6655: $coursetimerintervals{$cid}{$item};
6656: }
6657: }
6658: $timerintchk{$cid} = 1;
6659: }
6660: }
6661:
6662: @userroles{'user.author','user.adv','user.rar'} = &set_userprivs(\%userroles,
6663: \%allroles, \%allgroups);
6664: $env{'user.adv'} = $userroles{'user.adv'};
6665: $env{'user.rar'} = $userroles{'user.rar'};
6666:
6667: return (\%userroles,\%firstaccenv,\%timerintenv);
6668: }
6669:
6670: sub set_arearole {
6671: my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
6672: unless ($nolog) {
6673: # log the associated role with the area
6674: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
6675: }
6676: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
6677: }
6678:
6679: sub custom_roleprivs {
6680: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
6681: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
6682: my $homsvr = &homeserver($rauthor,$rdomain);
6683: if (&hostname($homsvr) ne '') {
6684: my ($rdummy,$roledef)=
6685: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
6686: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
6687: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
6688: if (defined($syspriv)) {
6689: if ($trest =~ /^$match_community$/) {
6690: $syspriv =~ s/bre\&S//;
6691: }
6692: $$allroles{'cm./'}.=':'.$syspriv;
6693: $$allroles{$spec.'./'}.=':'.$syspriv;
6694: }
6695: if ($tdomain ne '') {
6696: if (defined($dompriv)) {
6697: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
6698: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
6699: }
6700: if (($trest ne '') && (defined($coursepriv))) {
6701: if ($trole =~ m{^cr/$tdomain/$tdomain\Q-domainconfig\E/([^/]+)$}) {
6702: my $rolename = $1;
6703: $coursepriv = &course_adhocrole_privs($rolename,$tdomain,$trest,$coursepriv);
6704: }
6705: $$allroles{'cm.'.$area}.=':'.$coursepriv;
6706: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
6707: }
6708: }
6709: }
6710: }
6711: }
6712:
6713: sub course_adhocrole_privs {
6714: my ($rolename,$cdom,$cnum,$coursepriv) = @_;
6715: my %overrides = &get('environment',["internal.adhocpriv.$rolename"],$cdom,$cnum);
6716: if ($overrides{"internal.adhocpriv.$rolename"}) {
6717: my (%currprivs,%storeprivs);
6718: foreach my $item (split(/:/,$coursepriv)) {
6719: my ($priv,$restrict) = split(/\&/,$item);
6720: $currprivs{$priv} = $restrict;
6721: }
6722: my (%possadd,%possremove,%full);
6723: foreach my $item (split(/\:/,$Apache::lonnet::pr{'cr:c'})) {
6724: my ($priv,$restrict)=split(/\&/,$item);
6725: $full{$priv} = $restrict;
6726: }
6727: foreach my $item (split(/,/,$overrides{"internal.adhocpriv.$rolename"})) {
6728: next if ($item eq '');
6729: my ($rule,$rest) = split(/=/,$item);
6730: next unless (($rule eq 'off') || ($rule eq 'on'));
6731: foreach my $priv (split(/:/,$rest)) {
6732: if ($priv ne '') {
6733: if ($rule eq 'off') {
6734: $possremove{$priv} = 1;
6735: } else {
6736: $possadd{$priv} = 1;
6737: }
6738: }
6739: }
6740: }
6741: foreach my $priv (sort(keys(%full))) {
6742: if (exists($currprivs{$priv})) {
6743: unless (exists($possremove{$priv})) {
6744: $storeprivs{$priv} = $currprivs{$priv};
6745: }
6746: } elsif (exists($possadd{$priv})) {
6747: $storeprivs{$priv} = $full{$priv};
6748: }
6749: }
6750: $coursepriv = ':'.join(':',map { $_.'&'.$storeprivs{$_}; } sort(keys(%storeprivs)));
6751: }
6752: return $coursepriv;
6753: }
6754:
6755: sub group_roleprivs {
6756: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
6757: my $access = 1;
6758: my $now = time;
6759: if (($tend!=0) && ($tend<$now)) { $access = 0; }
6760: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
6761: if ($access) {
6762: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
6763: $$allgroups{$course}{$group} .=':'.$group_privs;
6764: }
6765: }
6766:
6767: sub standard_roleprivs {
6768: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
6769: if (defined($pr{$trole.':s'})) {
6770: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
6771: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
6772: }
6773: if ($tdomain ne '') {
6774: if (defined($pr{$trole.':d'})) {
6775: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
6776: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
6777: }
6778: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
6779: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
6780: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
6781: }
6782: }
6783: }
6784:
6785: sub set_userprivs {
6786: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
6787: my $author=0;
6788: my $adv=0;
6789: my $rar=0;
6790: my %grouproles = ();
6791: if (keys(%{$allgroups}) > 0) {
6792: my @groupkeys;
6793: foreach my $role (keys(%{$allroles})) {
6794: push(@groupkeys,$role);
6795: }
6796: if (ref($groups_roles) eq 'HASH') {
6797: foreach my $key (keys(%{$groups_roles})) {
6798: unless (grep(/^\Q$key\E$/,@groupkeys)) {
6799: push(@groupkeys,$key);
6800: }
6801: }
6802: }
6803: if (@groupkeys > 0) {
6804: foreach my $role (@groupkeys) {
6805: my ($trole,$area,$sec,$extendedarea);
6806: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
6807: $trole = $1;
6808: $area = $2;
6809: $sec = $3;
6810: $extendedarea = $area.$sec;
6811: if (exists($$allgroups{$area})) {
6812: foreach my $group (keys(%{$$allgroups{$area}})) {
6813: my $spec = $trole.'.'.$extendedarea;
6814: $grouproles{$spec.'.'.$area.'/'.$group} =
6815: $$allgroups{$area}{$group};
6816: }
6817: }
6818: }
6819: }
6820: }
6821: }
6822: foreach my $group (keys(%grouproles)) {
6823: $$allroles{$group} = $grouproles{$group};
6824: }
6825: foreach my $role (keys(%{$allroles})) {
6826: my %thesepriv;
6827: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
6828: foreach my $item (split(/:/,$$allroles{$role})) {
6829: if ($item ne '') {
6830: my ($privilege,$restrictions)=split(/&/,$item);
6831: if ($restrictions eq '') {
6832: $thesepriv{$privilege}='F';
6833: } elsif ($thesepriv{$privilege} ne 'F') {
6834: $thesepriv{$privilege}.=$restrictions;
6835: }
6836: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
6837: if ($thesepriv{'rar'} eq 'F') { $rar=1; }
6838: }
6839: }
6840: my $thesestr='';
6841: foreach my $priv (sort(keys(%thesepriv))) {
6842: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
6843: }
6844: $userroles->{'user.priv.'.$role} = $thesestr;
6845: }
6846: return ($author,$adv,$rar);
6847: }
6848:
6849: sub role_status {
6850: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
6851: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
6852: my ($one,$two) = split(m{\./},$rolekey,2);
6853: (undef,undef,$$role) = split(/\./,$one,3);
6854: unless (!defined($$role) || $$role eq '') {
6855: $$where = '/'.$two;
6856: $$trolecode=$$role.'.'.$$where;
6857: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
6858: $$tstatus='is';
6859: if ($$tstart && $$tstart>$update) {
6860: $$tstatus='future';
6861: if ($$tstart<$now) {
6862: if ($$tstart && $$tstart>$refresh) {
6863: if (($$where ne '') && ($$role ne '')) {
6864: my (%allroles,%allgroups,$group_privs,
6865: %groups_roles,@rolecodes);
6866: my %userroles = (
6867: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
6868: );
6869: @rolecodes = ('cm');
6870: my $spec=$$role.'.'.$$where;
6871: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
6872: if ($$role =~ /^cr\//) {
6873: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
6874: push(@rolecodes,'cr');
6875: } elsif ($$role eq 'gr') {
6876: push(@rolecodes,$$role);
6877: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
6878: $env{'user.name'});
6879: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
6880: (undef,my $group_privs) = split(/\//,$trole);
6881: $group_privs = &unescape($group_privs);
6882: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
6883: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
6884: &get_groups_roles($tdomain,$trest,
6885: \%course_roles,\@rolecodes,
6886: \%groups_roles);
6887: } else {
6888: push(@rolecodes,$$role);
6889: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
6890: }
6891: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%allroles,\%allgroups,
6892: \%groups_roles);
6893: &appenv(\%userroles,\@rolecodes);
6894: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
6895: }
6896: }
6897: $$tstatus = 'is';
6898: }
6899: }
6900: if ($$tend) {
6901: if ($$tend<$update) {
6902: $$tstatus='expired';
6903: } elsif ($$tend<$now) {
6904: $$tstatus='will_not';
6905: }
6906: }
6907: }
6908: }
6909: }
6910:
6911: sub get_groups_roles {
6912: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
6913: return unless((ref($cdom_courseroles) eq 'HASH') &&
6914: (ref($rolecodes) eq 'ARRAY') &&
6915: (ref($groups_roles) eq 'HASH'));
6916: if (keys(%{$cdom_courseroles}) > 0) {
6917: my ($cnum) = ($rest =~ /^($match_courseid)/);
6918: if ($cdom ne '' && $cnum ne '') {
6919: foreach my $key (keys(%{$cdom_courseroles})) {
6920: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
6921: my $crsrole = $1;
6922: my $crssec = $2;
6923: if ($crsrole =~ /^cr/) {
6924: unless (grep(/^cr$/,@{$rolecodes})) {
6925: push(@{$rolecodes},'cr');
6926: }
6927: } else {
6928: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
6929: push(@{$rolecodes},$crsrole);
6930: }
6931: }
6932: my $rolekey = "$crsrole./$cdom/$cnum";
6933: if ($crssec ne '') {
6934: $rolekey .= "/$crssec";
6935: }
6936: $rolekey .= './';
6937: $groups_roles->{$rolekey} = $rolecodes;
6938: }
6939: }
6940: }
6941: }
6942: return;
6943: }
6944:
6945: sub delete_env_groupprivs {
6946: my ($where,$courseroles,$possroles) = @_;
6947: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
6948: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
6949: unless (ref($courseroles->{$udom}) eq 'HASH') {
6950: %{$courseroles->{$udom}} =
6951: &get_my_roles('','','userroles',['active'],
6952: $possroles,[$udom],1);
6953: }
6954: if (ref($courseroles->{$udom}) eq 'HASH') {
6955: foreach my $item (keys(%{$courseroles->{$udom}})) {
6956: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
6957: my $area = '/'.$cdom.'/'.$cnum;
6958: my $privkey = "user.priv.$crsrole.$area";
6959: if ($crssec ne '') {
6960: $privkey .= '/'.$crssec;
6961: }
6962: $privkey .= ".$area/$group";
6963: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
6964: }
6965: }
6966: return;
6967: }
6968:
6969: sub check_adhoc_privs {
6970: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller,$sec) = @_;
6971: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
6972: if ($sec) {
6973: $cckey .= '/'.$sec;
6974: }
6975: my $setprivs;
6976: if ($env{$cckey}) {
6977: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
6978: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
6979: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
6980: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
6981: $setprivs = 1;
6982: }
6983: } else {
6984: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
6985: $setprivs = 1;
6986: }
6987: return $setprivs;
6988: }
6989:
6990: sub set_adhoc_privileges {
6991: # role can be cc, ca, or cr/<dom>/<dom>-domainconfig/role
6992: my ($dcdom,$pickedcourse,$role,$caller,$sec) = @_;
6993: my $area = '/'.$dcdom.'/'.$pickedcourse;
6994: if ($sec ne '') {
6995: $area .= '/'.$sec;
6996: }
6997: my $spec = $role.'.'.$area;
6998: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
6999: $env{'user.name'},1);
7000: my %rolehash = ();
7001: if ($role =~ m{^\Qcr/$dcdom/$dcdom\E\-domainconfig/(\w+)$}) {
7002: my $rolename = $1;
7003: &custom_roleprivs(\%rolehash,$role,$dcdom,$pickedcourse,$spec,$area);
7004: my %domdef = &get_domain_defaults($dcdom);
7005: if (ref($domdef{'adhocroles'}) eq 'HASH') {
7006: if (ref($domdef{'adhocroles'}{$rolename}) eq 'HASH') {
7007: &appenv({'request.role.desc' => $domdef{'adhocroles'}{$rolename}{'desc'},});
7008: }
7009: }
7010: } else {
7011: &standard_roleprivs(\%rolehash,$role,$dcdom,$spec,$pickedcourse,$area);
7012: }
7013: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%rolehash);
7014: &appenv(\%userroles,[$role,'cm']);
7015: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
7016: unless (($caller eq 'constructaccess' && $env{'request.course.id'}) ||
7017: ($caller eq 'tiny')) {
7018: &appenv( {'request.role' => $spec,
7019: 'request.role.domain' => $dcdom,
7020: 'request.course.sec' => $sec,
7021: }
7022: );
7023: my $tadv=0;
7024: if (&allowed('adv') eq 'F') { $tadv=1; }
7025: &appenv({'request.role.adv' => $tadv});
7026: }
7027: }
7028:
7029: # --------------------------------------------------------------- get interface
7030:
7031: sub get {
7032: my ($namespace,$storearr,$udomain,$uname)=@_;
7033: my $items='';
7034: foreach my $item (@$storearr) {
7035: $items.=&escape($item).'&';
7036: }
7037: $items=~s/\&$//;
7038: if (!$udomain) { $udomain=$env{'user.domain'}; }
7039: if (!$uname) { $uname=$env{'user.name'}; }
7040: my $uhome=&homeserver($uname,$udomain);
7041:
7042: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
7043: my @pairs=split(/\&/,$rep);
7044: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
7045: return @pairs;
7046: }
7047: my %returnhash=();
7048: my $i=0;
7049: foreach my $item (@$storearr) {
7050: $returnhash{$item}=&thaw_unescape($pairs[$i]);
7051: $i++;
7052: }
7053: return %returnhash;
7054: }
7055:
7056: # --------------------------------------------------------------- del interface
7057:
7058: sub del {
7059: my ($namespace,$storearr,$udomain,$uname)=@_;
7060: my $items='';
7061: foreach my $item (@$storearr) {
7062: $items.=&escape($item).'&';
7063: }
7064:
7065: $items=~s/\&$//;
7066: if (!$udomain) { $udomain=$env{'user.domain'}; }
7067: if (!$uname) { $uname=$env{'user.name'}; }
7068: my $uhome=&homeserver($uname,$udomain);
7069: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
7070: }
7071:
7072: # -------------------------------------------------------------- dump interface
7073:
7074: sub unserialize {
7075: my ($rep, $escapedkeys) = @_;
7076:
7077: return {} if $rep =~ /^error/;
7078:
7079: my %returnhash=();
7080: foreach my $item (split(/\&/,$rep)) {
7081: my ($key, $value) = split(/=/, $item, 2);
7082: $key = unescape($key) unless $escapedkeys;
7083: next if $key =~ /^error: 2 /;
7084: $returnhash{$key} = &thaw_unescape($value);
7085: }
7086: #return %returnhash;
7087: return \%returnhash;
7088: }
7089:
7090: # see Lond::dump_with_regexp
7091: # if $escapedkeys hash keys won't get unescaped.
7092: sub dump {
7093: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
7094: if (!$udomain) { $udomain=$env{'user.domain'}; }
7095: if (!$uname) { $uname=$env{'user.name'}; }
7096: my $uhome=&homeserver($uname,$udomain);
7097:
7098: if ($regexp) {
7099: $regexp=&escape($regexp);
7100: } else {
7101: $regexp='.';
7102: }
7103: if (grep { $_ eq $uhome } current_machine_ids()) {
7104: # user is hosted on this machine
7105: my $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
7106: $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
7107: return %{unserialize($reply, $escapedkeys)};
7108: }
7109: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
7110: my @pairs=split(/\&/,$rep);
7111: my %returnhash=();
7112: if (!($rep =~ /^error/ )) {
7113: foreach my $item (@pairs) {
7114: my ($key,$value)=split(/=/,$item,2);
7115: $key = unescape($key) unless $escapedkeys;
7116: #$key = &unescape($key);
7117: next if ($key =~ /^error: 2 /);
7118: $returnhash{$key}=&thaw_unescape($value);
7119: }
7120: }
7121: return %returnhash;
7122: }
7123:
7124:
7125: # --------------------------------------------------------- dumpstore interface
7126:
7127: sub dumpstore {
7128: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
7129: # same as dump but keys must be escaped. They may contain colon separated
7130: # lists of values that may themself contain colons (e.g. symbs).
7131: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
7132: }
7133:
7134: # -------------------------------------------------------------- keys interface
7135:
7136: sub getkeys {
7137: my ($namespace,$udomain,$uname)=@_;
7138: if (!$udomain) { $udomain=$env{'user.domain'}; }
7139: if (!$uname) { $uname=$env{'user.name'}; }
7140: my $uhome=&homeserver($uname,$udomain);
7141: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
7142: my @keyarray=();
7143: foreach my $key (split(/\&/,$rep)) {
7144: next if ($key =~ /^error: 2 /);
7145: push(@keyarray,&unescape($key));
7146: }
7147: return @keyarray;
7148: }
7149:
7150: # --------------------------------------------------------------- currentdump
7151: sub currentdump {
7152: my ($courseid,$sdom,$sname)=@_;
7153: $courseid = $env{'request.course.id'} if (! defined($courseid));
7154: $sdom = $env{'user.domain'} if (! defined($sdom));
7155: $sname = $env{'user.name'} if (! defined($sname));
7156: my $uhome = &homeserver($sname,$sdom);
7157: my $rep;
7158:
7159: if (grep { $_ eq $uhome } current_machine_ids()) {
7160: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
7161: $courseid)));
7162: } else {
7163: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
7164: }
7165:
7166: return if ($rep =~ /^(error:|no_such_host)/);
7167: #
7168: my %returnhash=();
7169: #
7170: if ($rep eq 'unknown_cmd') {
7171: # an old lond will not know currentdump
7172: # Do a dump and make it look like a currentdump
7173: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
7174: return if ($tmp[0] =~ /^(error:|no_such_host)/);
7175: my %hash = @tmp;
7176: @tmp=();
7177: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
7178: } else {
7179: my @pairs=split(/\&/,$rep);
7180: foreach my $pair (@pairs) {
7181: my ($key,$value)=split(/=/,$pair,2);
7182: my ($symb,$param) = split(/:/,$key);
7183: $returnhash{&unescape($symb)}->{&unescape($param)} =
7184: &thaw_unescape($value);
7185: }
7186: }
7187: return %returnhash;
7188: }
7189:
7190: sub convert_dump_to_currentdump{
7191: my %hash = %{shift()};
7192: my %returnhash;
7193: # Code ripped from lond, essentially. The only difference
7194: # here is the unescaping done by lonnet::dump(). Conceivably
7195: # we might run in to problems with parameter names =~ /^v\./
7196: while (my ($key,$value) = each(%hash)) {
7197: my ($v,$symb,$param) = split(/:/,$key);
7198: $symb = &unescape($symb);
7199: $param = &unescape($param);
7200: next if ($v eq 'version' || $symb eq 'keys');
7201: next if (exists($returnhash{$symb}) &&
7202: exists($returnhash{$symb}->{$param}) &&
7203: $returnhash{$symb}->{'v.'.$param} > $v);
7204: $returnhash{$symb}->{$param}=$value;
7205: $returnhash{$symb}->{'v.'.$param}=$v;
7206: }
7207: #
7208: # Remove all of the keys in the hashes which keep track of
7209: # the version of the parameter.
7210: while (my ($symb,$param_hash) = each(%returnhash)) {
7211: # use a foreach because we are going to delete from the hash.
7212: foreach my $key (keys(%$param_hash)) {
7213: delete($param_hash->{$key}) if ($key =~ /^v\./);
7214: }
7215: }
7216: return \%returnhash;
7217: }
7218:
7219: # ------------------------------------------------------ critical inc interface
7220:
7221: sub cinc {
7222: return &inc(@_,'critical');
7223: }
7224:
7225: # --------------------------------------------------------------- inc interface
7226:
7227: sub inc {
7228: my ($namespace,$store,$udomain,$uname,$critical) = @_;
7229: if (!$udomain) { $udomain=$env{'user.domain'}; }
7230: if (!$uname) { $uname=$env{'user.name'}; }
7231: my $uhome=&homeserver($uname,$udomain);
7232: my $items='';
7233: if (! ref($store)) {
7234: # got a single value, so use that instead
7235: $items = &escape($store).'=&';
7236: } elsif (ref($store) eq 'SCALAR') {
7237: $items = &escape($$store).'=&';
7238: } elsif (ref($store) eq 'ARRAY') {
7239: $items = join('=&',map {&escape($_);} @{$store});
7240: } elsif (ref($store) eq 'HASH') {
7241: while (my($key,$value) = each(%{$store})) {
7242: $items.= &escape($key).'='.&escape($value).'&';
7243: }
7244: }
7245: $items=~s/\&$//;
7246: if ($critical) {
7247: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
7248: } else {
7249: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
7250: }
7251: }
7252:
7253: # --------------------------------------------------------------- put interface
7254:
7255: sub put {
7256: my ($namespace,$storehash,$udomain,$uname)=@_;
7257: if (!$udomain) { $udomain=$env{'user.domain'}; }
7258: if (!$uname) { $uname=$env{'user.name'}; }
7259: my $uhome=&homeserver($uname,$udomain);
7260: my $items='';
7261: foreach my $item (keys(%$storehash)) {
7262: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
7263: }
7264: $items=~s/\&$//;
7265: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
7266: }
7267:
7268: # ------------------------------------------------------------ newput interface
7269:
7270: sub newput {
7271: my ($namespace,$storehash,$udomain,$uname)=@_;
7272: if (!$udomain) { $udomain=$env{'user.domain'}; }
7273: if (!$uname) { $uname=$env{'user.name'}; }
7274: my $uhome=&homeserver($uname,$udomain);
7275: my $items='';
7276: foreach my $key (keys(%$storehash)) {
7277: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
7278: }
7279: $items=~s/\&$//;
7280: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
7281: }
7282:
7283: # --------------------------------------------------------- putstore interface
7284:
7285: sub putstore {
7286: my ($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog)=@_;
7287: if (!$udomain) { $udomain=$env{'user.domain'}; }
7288: if (!$uname) { $uname=$env{'user.name'}; }
7289: my $uhome=&homeserver($uname,$udomain);
7290: my $items='';
7291: foreach my $key (keys(%$storehash)) {
7292: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
7293: }
7294: $items=~s/\&$//;
7295: my $esc_symb=&escape($symb);
7296: my $esc_v=&escape($version);
7297: my $reply =
7298: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
7299: $uhome);
7300: if (($tolog) && ($reply eq 'ok')) {
7301: my $namevalue='';
7302: foreach my $key (keys(%{$storehash})) {
7303: $namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&';
7304: }
7305: my $ip = &get_requestor_ip();
7306: $namevalue .= 'ip='.&escape($ip).
7307: '&host='.&escape($perlvar{'lonHostID'}).
7308: '&version='.$esc_v.
7309: '&by='.&escape($env{'user.name'}.':'.$env{'user.domain'});
7310: &Apache::lonnet::courselog($symb.':'.$uname.':'.$udomain.':PUTSTORE:'.$namevalue);
7311: }
7312: if ($reply eq 'unknown_cmd') {
7313: # gfall back to way things use to be done
7314: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
7315: $uname);
7316: }
7317: return $reply;
7318: }
7319:
7320: sub old_putstore {
7321: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
7322: if (!$udomain) { $udomain=$env{'user.domain'}; }
7323: if (!$uname) { $uname=$env{'user.name'}; }
7324: my $uhome=&homeserver($uname,$udomain);
7325: my %newstorehash;
7326: foreach my $item (keys(%$storehash)) {
7327: my $key = $version.':'.&escape($symb).':'.$item;
7328: $newstorehash{$key} = $storehash->{$item};
7329: }
7330: my $items='';
7331: my %allitems = ();
7332: foreach my $item (keys(%newstorehash)) {
7333: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
7334: my $key = $1.':keys:'.$2;
7335: $allitems{$key} .= $3.':';
7336: }
7337: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
7338: }
7339: foreach my $item (keys(%allitems)) {
7340: $allitems{$item} =~ s/\:$//;
7341: $items.= $item.'='.$allitems{$item}.'&';
7342: }
7343: $items=~s/\&$//;
7344: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
7345: }
7346:
7347: # ------------------------------------------------------ critical put interface
7348:
7349: sub cput {
7350: my ($namespace,$storehash,$udomain,$uname)=@_;
7351: if (!$udomain) { $udomain=$env{'user.domain'}; }
7352: if (!$uname) { $uname=$env{'user.name'}; }
7353: my $uhome=&homeserver($uname,$udomain);
7354: my $items='';
7355: foreach my $item (keys(%$storehash)) {
7356: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
7357: }
7358: $items=~s/\&$//;
7359: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
7360: }
7361:
7362: # -------------------------------------------------------------- eget interface
7363:
7364: sub eget {
7365: my ($namespace,$storearr,$udomain,$uname)=@_;
7366: my $items='';
7367: foreach my $item (@$storearr) {
7368: $items.=&escape($item).'&';
7369: }
7370: $items=~s/\&$//;
7371: if (!$udomain) { $udomain=$env{'user.domain'}; }
7372: if (!$uname) { $uname=$env{'user.name'}; }
7373: my $uhome=&homeserver($uname,$udomain);
7374: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
7375: my @pairs=split(/\&/,$rep);
7376: my %returnhash=();
7377: my $i=0;
7378: foreach my $item (@$storearr) {
7379: $returnhash{$item}=&thaw_unescape($pairs[$i]);
7380: $i++;
7381: }
7382: return %returnhash;
7383: }
7384:
7385: # ------------------------------------------------------------ tmpput interface
7386: sub tmpput {
7387: my ($storehash,$server,$context)=@_;
7388: my $items='';
7389: foreach my $item (keys(%$storehash)) {
7390: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
7391: }
7392: $items=~s/\&$//;
7393: if (defined($context)) {
7394: $items .= ':'.&escape($context);
7395: }
7396: return &reply("tmpput:$items",$server);
7397: }
7398:
7399: # ------------------------------------------------------------ tmpget interface
7400: sub tmpget {
7401: my ($token,$server)=@_;
7402: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
7403: my $rep=&reply("tmpget:$token",$server);
7404: my %returnhash;
7405: if ($rep =~ /^(con_lost|error|no_such_host)/i) {
7406: return %returnhash;
7407: }
7408: foreach my $item (split(/\&/,$rep)) {
7409: my ($key,$value)=split(/=/,$item);
7410: $returnhash{&unescape($key)}=&thaw_unescape($value);
7411: }
7412: return %returnhash;
7413: }
7414:
7415: # ------------------------------------------------------------ tmpdel interface
7416: sub tmpdel {
7417: my ($token,$server)=@_;
7418: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
7419: return &reply("tmpdel:$token",$server);
7420: }
7421:
7422: # ------------------------------------------------------------ get_timebased_id
7423:
7424: sub get_timebased_id {
7425: my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
7426: $maxtries) = @_;
7427: my ($newid,$error,$dellock);
7428: unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
7429: return ('','ok','invalid call to get suffix');
7430: }
7431:
7432: # set defaults for any optional args for which values were not supplied
7433: if ($who eq '') {
7434: $who = $env{'user.name'}.':'.$env{'user.domain'};
7435: }
7436: if (!$locktries) {
7437: $locktries = 3;
7438: }
7439: if (!$maxtries) {
7440: $maxtries = 10;
7441: }
7442:
7443: if (($cdom eq '') || ($cnum eq '')) {
7444: if ($env{'request.course.id'}) {
7445: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7446: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7447: }
7448: if (($cdom eq '') || ($cnum eq '')) {
7449: return ('','ok','call to get suffix not in course context');
7450: }
7451: }
7452:
7453: # construct locking item
7454: my $lockhash = {
7455: $prefix."\0".'locked_'.$keyid => $who,
7456: };
7457: my $tries = 0;
7458:
7459: # attempt to get lock on nohist_$namespace file
7460: my $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
7461: while (($gotlock ne 'ok') && $tries <$locktries) {
7462: $tries ++;
7463: sleep 1;
7464: $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
7465: }
7466:
7467: # attempt to get unique identifier, based on current timestamp
7468: if ($gotlock eq 'ok') {
7469: my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
7470: my $id = time;
7471: $newid = $id;
7472: if ($idtype eq 'addcode') {
7473: $newid .= &sixnum_code();
7474: }
7475: my $idtries = 0;
7476: while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
7477: if ($idtype eq 'concat') {
7478: $newid = $id.$idtries;
7479: } elsif ($idtype eq 'addcode') {
7480: $newid = $newid.&sixnum_code();
7481: } else {
7482: $newid ++;
7483: }
7484: $idtries ++;
7485: }
7486: if (!exists($inuse{$prefix."\0".$newid})) {
7487: my %new_item = (
7488: $prefix."\0".$newid => $who,
7489: );
7490: my $putresult = &Apache::lonnet::put('nohist_'.$namespace,\%new_item,
7491: $cdom,$cnum);
7492: if ($putresult ne 'ok') {
7493: undef($newid);
7494: $error = 'error saving new item: '.$putresult;
7495: }
7496: } else {
7497: undef($newid);
7498: $error = ('error: no unique suffix available for the new item ');
7499: }
7500: # remove lock
7501: my @del_lock = ($prefix."\0".'locked_'.$keyid);
7502: $dellock = &Apache::lonnet::del('nohist_'.$namespace,\@del_lock,$cdom,$cnum);
7503: } else {
7504: $error = "error: could not obtain lockfile\n";
7505: $dellock = 'ok';
7506: if (($prefix eq 'paste') && ($namespace eq 'courseeditor') && ($keyid eq 'num')) {
7507: $dellock = 'nolock';
7508: }
7509: }
7510: return ($newid,$dellock,$error);
7511: }
7512:
7513: sub sixnum_code {
7514: my $code;
7515: for (0..6) {
7516: $code .= int( rand(9) );
7517: }
7518: return $code;
7519: }
7520:
7521: # -------------------------------------------------- portfolio access checking
7522:
7523: sub portfolio_access {
7524: my ($requrl,$clientip) = @_;
7525: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
7526: my $result = &get_portfolio_access($udom,$unum,$file_name,$group,$clientip);
7527: if ($result) {
7528: my %setters;
7529: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
7530: my ($startblock,$endblock) =
7531: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
7532: if ($startblock && $endblock) {
7533: return 'B';
7534: }
7535: } else {
7536: my ($startblock,$endblock) =
7537: &Apache::loncommon::blockcheck(\%setters,'port');
7538: if ($startblock && $endblock) {
7539: return 'B';
7540: }
7541: }
7542: }
7543: if ($result eq 'ok') {
7544: return 'F';
7545: } elsif ($result =~ /^[^:]+:guest_/) {
7546: return 'A';
7547: }
7548: return '';
7549: }
7550:
7551: sub get_portfolio_access {
7552: my ($udom,$unum,$file_name,$group,$clientip,$access_hash) = @_;
7553:
7554: if (!ref($access_hash)) {
7555: my $current_perms = &get_portfile_permissions($udom,$unum);
7556: my %access_controls = &get_access_controls($current_perms,$group,
7557: $file_name);
7558: $access_hash = $access_controls{$file_name};
7559: }
7560:
7561: my ($public,$guest,@domains,@users,@courses,@groups,@ips);
7562: my $now = time;
7563: if (ref($access_hash) eq 'HASH') {
7564: foreach my $key (keys(%{$access_hash})) {
7565: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
7566: if ($start > $now) {
7567: next;
7568: }
7569: if ($end && $end<$now) {
7570: next;
7571: }
7572: if ($scope eq 'public') {
7573: $public = $key;
7574: last;
7575: } elsif ($scope eq 'guest') {
7576: $guest = $key;
7577: } elsif ($scope eq 'domains') {
7578: push(@domains,$key);
7579: } elsif ($scope eq 'users') {
7580: push(@users,$key);
7581: } elsif ($scope eq 'course') {
7582: push(@courses,$key);
7583: } elsif ($scope eq 'group') {
7584: push(@groups,$key);
7585: } elsif ($scope eq 'ip') {
7586: push(@ips,$key);
7587: }
7588: }
7589: if ($public) {
7590: return 'ok';
7591: } elsif (@ips > 0) {
7592: my $allowed;
7593: foreach my $ipkey (@ips) {
7594: if (ref($access_hash->{$ipkey}{'ip'}) eq 'ARRAY') {
7595: if (&Apache::loncommon::check_ip_acc(join(',',@{$access_hash->{$ipkey}{'ip'}}),$clientip)) {
7596: $allowed = 1;
7597: last;
7598: }
7599: }
7600: }
7601: if ($allowed) {
7602: return 'ok';
7603: }
7604: }
7605: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
7606: if ($guest) {
7607: return $guest;
7608: }
7609: } else {
7610: if (@domains > 0) {
7611: foreach my $domkey (@domains) {
7612: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
7613: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
7614: return 'ok';
7615: }
7616: }
7617: }
7618: }
7619: if (@users > 0) {
7620: foreach my $userkey (@users) {
7621: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
7622: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
7623: if (ref($item) eq 'HASH') {
7624: if (($item->{'uname'} eq $env{'user.name'}) &&
7625: ($item->{'udom'} eq $env{'user.domain'})) {
7626: return 'ok';
7627: }
7628: }
7629: }
7630: }
7631: }
7632: }
7633: my %roleshash;
7634: my @courses_and_groups = @courses;
7635: push(@courses_and_groups,@groups);
7636: if (@courses_and_groups > 0) {
7637: my (%allgroups,%allroles);
7638: my ($start,$end,$role,$sec,$group);
7639: foreach my $envkey (%env) {
7640: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
7641: my $cid = $2.'_'.$3;
7642: if ($1 eq 'gr') {
7643: $group = $4;
7644: $allgroups{$cid}{$group} = $env{$envkey};
7645: } else {
7646: if ($4 eq '') {
7647: $sec = 'none';
7648: } else {
7649: $sec = $4;
7650: }
7651: $allroles{$cid}{$1}{$sec} = $env{$envkey};
7652: }
7653: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
7654: my $cid = $2.'_'.$3;
7655: if ($4 eq '') {
7656: $sec = 'none';
7657: } else {
7658: $sec = $4;
7659: }
7660: $allroles{$cid}{$1}{$sec} = $env{$envkey};
7661: }
7662: }
7663: if (keys(%allroles) == 0) {
7664: return;
7665: }
7666: foreach my $key (@courses_and_groups) {
7667: my %content = %{$$access_hash{$key}};
7668: my $cnum = $content{'number'};
7669: my $cdom = $content{'domain'};
7670: my $cid = $cdom.'_'.$cnum;
7671: if (!exists($allroles{$cid})) {
7672: next;
7673: }
7674: foreach my $role_id (keys(%{$content{'roles'}})) {
7675: my @sections = @{$content{'roles'}{$role_id}{'section'}};
7676: my @groups = @{$content{'roles'}{$role_id}{'group'}};
7677: my @status = @{$content{'roles'}{$role_id}{'access'}};
7678: my @roles = @{$content{'roles'}{$role_id}{'role'}};
7679: foreach my $role (keys(%{$allroles{$cid}})) {
7680: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
7681: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
7682: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
7683: if (grep/^all$/,@sections) {
7684: return 'ok';
7685: } else {
7686: if (grep/^$sec$/,@sections) {
7687: return 'ok';
7688: }
7689: }
7690: }
7691: }
7692: if (keys(%{$allgroups{$cid}}) == 0) {
7693: if (grep/^none$/,@groups) {
7694: return 'ok';
7695: }
7696: } else {
7697: if (grep/^all$/,@groups) {
7698: return 'ok';
7699: }
7700: foreach my $group (keys(%{$allgroups{$cid}})) {
7701: if (grep/^$group$/,@groups) {
7702: return 'ok';
7703: }
7704: }
7705: }
7706: }
7707: }
7708: }
7709: }
7710: }
7711: if ($guest) {
7712: return $guest;
7713: }
7714: }
7715: }
7716: return;
7717: }
7718:
7719: sub course_group_datechecker {
7720: my ($dates,$now,$status) = @_;
7721: my ($start,$end) = split(/\./,$dates);
7722: if (!$start && !$end) {
7723: return 'ok';
7724: }
7725: if (grep/^active$/,@{$status}) {
7726: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
7727: return 'ok';
7728: }
7729: }
7730: if (grep/^previous$/,@{$status}) {
7731: if ($end > $now ) {
7732: return 'ok';
7733: }
7734: }
7735: if (grep/^future$/,@{$status}) {
7736: if ($start > $now) {
7737: return 'ok';
7738: }
7739: }
7740: return;
7741: }
7742:
7743: sub parse_portfolio_url {
7744: my ($url) = @_;
7745:
7746: my ($type,$udom,$unum,$group,$file_name);
7747:
7748: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
7749: $type = 1;
7750: $udom = $1;
7751: $unum = $2;
7752: $file_name = $3;
7753: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
7754: $type = 2;
7755: $udom = $1;
7756: $unum = $2;
7757: $group = $3;
7758: $file_name = $3.'/'.$4;
7759: }
7760: if (wantarray) {
7761: return ($type,$udom,$unum,$file_name,$group);
7762: }
7763: return $type;
7764: }
7765:
7766: sub is_portfolio_url {
7767: my ($url) = @_;
7768: return scalar(&parse_portfolio_url($url));
7769: }
7770:
7771: sub is_portfolio_file {
7772: my ($file) = @_;
7773: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
7774: return 1;
7775: }
7776: return;
7777: }
7778:
7779: sub usertools_access {
7780: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
7781: my ($access,%tools);
7782: if ($context eq '') {
7783: $context = 'tools';
7784: }
7785: if ($context eq 'requestcourses') {
7786: %tools = (
7787: official => 1,
7788: unofficial => 1,
7789: community => 1,
7790: textbook => 1,
7791: placement => 1,
7792: lti => 1,
7793: );
7794: } elsif ($context eq 'requestauthor') {
7795: %tools = (
7796: requestauthor => 1,
7797: );
7798: } else {
7799: %tools = (
7800: aboutme => 1,
7801: blog => 1,
7802: webdav => 1,
7803: portfolio => 1,
7804: );
7805: }
7806: return if (!defined($tools{$tool}));
7807:
7808: if (($udom eq '') || ($uname eq '')) {
7809: $udom = $env{'user.domain'};
7810: $uname = $env{'user.name'};
7811: }
7812:
7813: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7814: if ($action ne 'reload') {
7815: if ($context eq 'requestcourses') {
7816: return $env{'environment.canrequest.'.$tool};
7817: } elsif ($context eq 'requestauthor') {
7818: return $env{'environment.canrequest.author'};
7819: } else {
7820: return $env{'environment.availabletools.'.$tool};
7821: }
7822: }
7823: }
7824:
7825: my ($toolstatus,$inststatus,$envkey);
7826: if ($context eq 'requestauthor') {
7827: $envkey = $context;
7828: } else {
7829: $envkey = $context.'.'.$tool;
7830: }
7831:
7832: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
7833: ($action ne 'reload')) {
7834: $toolstatus = $env{'environment.'.$envkey};
7835: $inststatus = $env{'environment.inststatus'};
7836: } else {
7837: if (ref($userenvref) eq 'HASH') {
7838: $toolstatus = $userenvref->{$envkey};
7839: $inststatus = $userenvref->{'inststatus'};
7840: } else {
7841: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
7842: $toolstatus = $userenv{$envkey};
7843: $inststatus = $userenv{'inststatus'};
7844: }
7845: }
7846:
7847: if ($toolstatus ne '') {
7848: if ($toolstatus) {
7849: $access = 1;
7850: } else {
7851: $access = 0;
7852: }
7853: return $access;
7854: }
7855:
7856: my ($is_adv,%domdef);
7857: if (ref($is_advref) eq 'HASH') {
7858: $is_adv = $is_advref->{'is_adv'};
7859: } else {
7860: $is_adv = &is_advanced_user($udom,$uname);
7861: }
7862: if (ref($domdefref) eq 'HASH') {
7863: %domdef = %{$domdefref};
7864: } else {
7865: %domdef = &get_domain_defaults($udom);
7866: }
7867: if (ref($domdef{$tool}) eq 'HASH') {
7868: if ($is_adv) {
7869: if ($domdef{$tool}{'_LC_adv'} ne '') {
7870: if ($domdef{$tool}{'_LC_adv'}) {
7871: $access = 1;
7872: } else {
7873: $access = 0;
7874: }
7875: return $access;
7876: }
7877: }
7878: if ($inststatus ne '') {
7879: my ($hasaccess,$hasnoaccess);
7880: foreach my $affiliation (split(/:/,$inststatus)) {
7881: if ($domdef{$tool}{$affiliation} ne '') {
7882: if ($domdef{$tool}{$affiliation}) {
7883: $hasaccess = 1;
7884: } else {
7885: $hasnoaccess = 1;
7886: }
7887: }
7888: }
7889: if ($hasaccess || $hasnoaccess) {
7890: if ($hasaccess) {
7891: $access = 1;
7892: } elsif ($hasnoaccess) {
7893: $access = 0;
7894: }
7895: return $access;
7896: }
7897: } else {
7898: if ($domdef{$tool}{'default'} ne '') {
7899: if ($domdef{$tool}{'default'}) {
7900: $access = 1;
7901: } elsif ($domdef{$tool}{'default'} == 0) {
7902: $access = 0;
7903: }
7904: return $access;
7905: }
7906: }
7907: } else {
7908: if (($context eq 'tools') && ($tool ne 'webdav')) {
7909: $access = 1;
7910: } else {
7911: $access = 0;
7912: }
7913: return $access;
7914: }
7915: }
7916:
7917: sub is_course_owner {
7918: my ($cdom,$cnum,$udom,$uname) = @_;
7919: if (($udom eq '') || ($uname eq '')) {
7920: $udom = $env{'user.domain'};
7921: $uname = $env{'user.name'};
7922: }
7923: unless (($udom eq '') || ($uname eq '')) {
7924: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
7925: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
7926: return 1;
7927: } else {
7928: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
7929: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
7930: return 1;
7931: }
7932: }
7933: }
7934: }
7935: return;
7936: }
7937:
7938: sub is_advanced_user {
7939: my ($udom,$uname) = @_;
7940: if ($udom ne '' && $uname ne '') {
7941: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7942: if (wantarray) {
7943: return ($env{'user.adv'},$env{'user.author'});
7944: } else {
7945: return $env{'user.adv'};
7946: }
7947: }
7948: }
7949: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
7950: my %allroles;
7951: my ($is_adv,$is_author);
7952: foreach my $role (keys(%roleshash)) {
7953: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
7954: my $area = '/'.$tdomain.'/'.$trest;
7955: if ($sec ne '') {
7956: $area .= '/'.$sec;
7957: }
7958: if (($area ne '') && ($trole ne '')) {
7959: my $spec=$trole.'.'.$area;
7960: if ($trole =~ /^cr\//) {
7961: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
7962: } elsif ($trole ne 'gr') {
7963: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
7964: }
7965: if ($trole eq 'au') {
7966: $is_author = 1;
7967: }
7968: }
7969: }
7970: foreach my $role (keys(%allroles)) {
7971: last if ($is_adv);
7972: foreach my $item (split(/:/,$allroles{$role})) {
7973: if ($item ne '') {
7974: my ($privilege,$restrictions)=split(/&/,$item);
7975: if ($privilege eq 'adv') {
7976: $is_adv = 1;
7977: last;
7978: }
7979: }
7980: }
7981: }
7982: if (wantarray) {
7983: return ($is_adv,$is_author);
7984: }
7985: return $is_adv;
7986: }
7987:
7988: sub check_can_request {
7989: my ($dom,$can_request,$request_domains,$uname,$udom) = @_;
7990: my $canreq = 0;
7991: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
7992: $uname = $env{'user.name'};
7993: $udom = $env{'user.domain'};
7994: }
7995: my ($types,$typename) = &Apache::loncommon::course_types();
7996: my @options = ('approval','validate','autolimit');
7997: my $optregex = join('|',@options);
7998: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
7999: foreach my $type (@{$types}) {
8000: if (&usertools_access($uname,$udom,$type,undef,
8001: 'requestcourses')) {
8002: $canreq ++;
8003: if (ref($request_domains) eq 'HASH') {
8004: push(@{$request_domains->{$type}},$udom);
8005: }
8006: if ($dom eq $udom) {
8007: $can_request->{$type} = 1;
8008: }
8009: }
8010: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '') &&
8011: ($env{'environment.reqcrsotherdom.'.$type} ne '')) {
8012: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
8013: if (@curr > 0) {
8014: foreach my $item (@curr) {
8015: if (ref($request_domains) eq 'HASH') {
8016: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
8017: if ($otherdom ne '') {
8018: if (ref($request_domains->{$type}) eq 'ARRAY') {
8019: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
8020: push(@{$request_domains->{$type}},$otherdom);
8021: }
8022: } else {
8023: push(@{$request_domains->{$type}},$otherdom);
8024: }
8025: }
8026: }
8027: }
8028: unless ($dom eq $env{'user.domain'}) {
8029: $canreq ++;
8030: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
8031: $can_request->{$type} = 1;
8032: }
8033: }
8034: }
8035: }
8036: }
8037: }
8038: return $canreq;
8039: }
8040:
8041: # ---------------------------------------------- Custom access rule evaluation
8042:
8043: sub customaccess {
8044: my ($priv,$uri)=@_;
8045: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
8046: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
8047: $udom = &LONCAPA::clean_domain($udom);
8048: $ucrs = &LONCAPA::clean_username($ucrs);
8049: my $access=0;
8050: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
8051: my ($effect,$realm,$role,$type)=split(/\:/,$right);
8052: if ($type eq 'user') {
8053: foreach my $scope (split(/\s*\,\s*/,$realm)) {
8054: my ($tdom,$tuname)=split(m{/},$scope);
8055: if ($tdom) {
8056: if ($tdom ne $env{'user.domain'}) { next; }
8057: }
8058: if ($tuname) {
8059: if ($tuname ne $env{'user.name'}) { next; }
8060: }
8061: $access=($effect eq 'allow');
8062: last;
8063: }
8064: } else {
8065: if ($role) {
8066: if ($role ne $urole) { next; }
8067: }
8068: foreach my $scope (split(/\s*\,\s*/,$realm)) {
8069: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
8070: if ($tdom) {
8071: if ($tdom ne $udom) { next; }
8072: }
8073: if ($tcrs) {
8074: if ($tcrs ne $ucrs) { next; }
8075: }
8076: if ($tsec) {
8077: if ($tsec ne $usec) { next; }
8078: }
8079: $access=($effect eq 'allow');
8080: last;
8081: }
8082: if ($realm eq '' && $role eq '') {
8083: $access=($effect eq 'allow');
8084: }
8085: }
8086: }
8087: return $access;
8088: }
8089:
8090: # ------------------------------------------------- Check for a user privilege
8091:
8092: sub allowed {
8093: my ($priv,$uri,$symb,$role,$clientip,$noblockcheck,$ignorecache)=@_;
8094: my $ver_orguri=$uri;
8095: $uri=&deversion($uri);
8096: my $orguri=$uri;
8097: $uri=&declutter($uri);
8098:
8099: if ($priv eq 'evb') {
8100: # Evade communication block restrictions for specified role in a course
8101: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
8102: return $1;
8103: } else {
8104: return;
8105: }
8106: }
8107:
8108: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
8109: # Free bre access to adm and meta resources
8110: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard|viewclasslist|aboutme|ext\.tool)$}))
8111: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
8112: && ($priv eq 'bre')) {
8113: return 'F';
8114: }
8115:
8116: # Free bre access to user's own portfolio contents
8117: my ($space,$domain,$name,@dir)=split('/',$uri);
8118: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
8119: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
8120: my %setters;
8121: my ($startblock,$endblock) =
8122: &Apache::loncommon::blockcheck(\%setters,'port');
8123: if ($startblock && $endblock) {
8124: return 'B';
8125: } else {
8126: return 'F';
8127: }
8128: }
8129:
8130: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
8131: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
8132: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
8133: if (exists($env{'request.course.id'})) {
8134: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8135: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
8136: if (($domain eq $cdom) && ($name eq $cnum)) {
8137: my $courseprivid=$env{'request.course.id'};
8138: $courseprivid=~s/\_/\//;
8139: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
8140: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
8141: return $1;
8142: } else {
8143: if ($env{'request.course.sec'}) {
8144: $courseprivid.='/'.$env{'request.course.sec'};
8145: }
8146: if ($env{'user.priv.'.$env{'request.role'}.'./'.
8147: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
8148: return $2;
8149: }
8150: }
8151: }
8152: }
8153: }
8154:
8155: # Free bre to public access
8156:
8157: if ($priv eq 'bre') {
8158: my $copyright;
8159: unless ($uri =~ /ext\.tool/) {
8160: $copyright=&metadata($uri,'copyright');
8161: }
8162: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
8163: return 'F';
8164: }
8165: if ($copyright eq 'priv') {
8166: $uri=~/([^\/]+)\/([^\/]+)\//;
8167: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
8168: return '';
8169: }
8170: }
8171: if ($copyright eq 'domain') {
8172: $uri=~/([^\/]+)\/([^\/]+)\//;
8173: unless (($env{'user.domain'} eq $1) ||
8174: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
8175: return '';
8176: }
8177: }
8178: if ($env{'request.role'}=~ /li\.\//) {
8179: # Library role, so allow browsing of resources in this domain.
8180: return 'F';
8181: }
8182: if ($copyright eq 'custom') {
8183: unless (&customaccess($priv,$uri)) { return ''; }
8184: }
8185: }
8186: # Domain coordinator is trying to create a course
8187: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
8188: # uri is the requested domain in this case.
8189: # comparison to 'request.role.domain' shows if the user has selected
8190: # a role of dc for the domain in question.
8191: return 'F' if ($uri eq $env{'request.role.domain'});
8192: }
8193:
8194: my $thisallowed='';
8195: my $statecond=0;
8196: my $courseprivid='';
8197:
8198: my $ownaccess;
8199: # Community Coordinator or Assistant Co-author browsing resource space.
8200: if (($priv eq 'bro') && ($env{'user.author'})) {
8201: if ($uri eq '') {
8202: $ownaccess = 1;
8203: } else {
8204: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
8205: my $udom = $env{'user.domain'};
8206: my $uname = $env{'user.name'};
8207: if ($uri =~ m{^\Q$udom\E/?$}) {
8208: $ownaccess = 1;
8209: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
8210: unless ($uri =~ m{\.\./}) {
8211: $ownaccess = 1;
8212: }
8213: } elsif (($udom ne 'public') && ($uname ne 'public')) {
8214: my $now = time;
8215: if ($uri =~ m{^([^/]+)/?$}) {
8216: my $adom = $1;
8217: foreach my $key (keys(%env)) {
8218: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
8219: my ($start,$end) = split('.',$env{$key});
8220: if (($now >= $start) && (!$end || $end < $now)) {
8221: $ownaccess = 1;
8222: last;
8223: }
8224: }
8225: }
8226: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
8227: my $adom = $1;
8228: my $aname = $2;
8229: foreach my $role ('ca','aa') {
8230: if ($env{"user.role.$role./$adom/$aname"}) {
8231: my ($start,$end) =
8232: split('.',$env{"user.role.$role./$adom/$aname"});
8233: if (($now >= $start) && (!$end || $end < $now)) {
8234: $ownaccess = 1;
8235: last;
8236: }
8237: }
8238: }
8239: }
8240: }
8241: }
8242: }
8243: }
8244:
8245: # Course
8246:
8247: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
8248: unless (($priv eq 'bro') && (!$ownaccess)) {
8249: $thisallowed.=$1;
8250: }
8251: }
8252:
8253: # Domain
8254:
8255: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
8256: =~/\Q$priv\E\&([^\:]*)/) {
8257: unless (($priv eq 'bro') && (!$ownaccess)) {
8258: $thisallowed.=$1;
8259: }
8260: }
8261:
8262: # User who is not author or co-author might still be able to edit
8263: # resource of an author in the domain (e.g., if Domain Coordinator).
8264: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
8265: (&allowed('mdc',$env{'request.course.id'}))) {
8266: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
8267: $thisallowed.=$1;
8268: }
8269: }
8270:
8271: # Course: uri itself is a course
8272: my $courseuri=$uri;
8273: $courseuri=~s/\_(\d)/\/$1/;
8274: $courseuri=~s/^([^\/])/\/$1/;
8275:
8276: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
8277: =~/\Q$priv\E\&([^\:]*)/) {
8278: if ($priv eq 'mip') {
8279: my $rem = $1;
8280: if (($uri ne '') && ($env{'request.course.id'} eq $uri) &&
8281: ($env{'course.'.$env{'request.course.id'}.'.internal.courseowner'} eq $env{'user.name'}.':'.$env{'user.domain'})) {
8282: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8283: if ($cdom ne '') {
8284: my %passwdconf = &get_passwdconf($cdom);
8285: if (ref($passwdconf{'crsownerchg'}) eq 'HASH') {
8286: if (ref($passwdconf{'crsownerchg'}{'by'}) eq 'ARRAY') {
8287: if (@{$passwdconf{'crsownerchg'}{'by'}}) {
8288: my @inststatuses = split(':',$env{'environment.inststatus'});
8289: unless (@inststatuses) {
8290: @inststatuses = ('default');
8291: }
8292: foreach my $status (@inststatuses) {
8293: if (grep(/^\Q$status\E$/,@{$passwdconf{'crsownerchg'}{'by'}})) {
8294: $thisallowed.=$rem;
8295: }
8296: }
8297: }
8298: }
8299: }
8300: }
8301: }
8302: } else {
8303: unless (($priv eq 'bro') && (!$ownaccess)) {
8304: $thisallowed.=$1;
8305: }
8306: }
8307: }
8308:
8309: # URI is an uploaded document for this course, default permissions don't matter
8310: # not allowing 'edit' access (editupload) to uploaded course docs
8311: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
8312: $thisallowed='';
8313: my ($match)=&is_on_map($uri);
8314: if ($match) {
8315: if ($env{'user.priv.'.$env{'request.role'}.'./'}
8316: =~/\Q$priv\E\&([^\:]*)/) {
8317: my $value = $1;
8318: my $deeplinkblock = &deeplink_check($priv,$symb,$uri);
8319: if ($deeplinkblock) {
8320: $thisallowed='D';
8321: } elsif ($noblockcheck) {
8322: $thisallowed.=$value;
8323: } else {
8324: my @blockers = &has_comm_blocking($priv,$symb,$uri,$ignorecache);
8325: if (@blockers > 0) {
8326: $thisallowed = 'B';
8327: } else {
8328: $thisallowed.=$value;
8329: }
8330: }
8331: }
8332: } else {
8333: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
8334: if ($refuri) {
8335: if ($refuri =~ m|^/adm/|) {
8336: $thisallowed='F';
8337: } else {
8338: $refuri=&declutter($refuri);
8339: my ($match) = &is_on_map($refuri);
8340: if ($match) {
8341: my $deeplinkblock = &deeplink_check($priv,$symb,$refuri);
8342: if ($deeplinkblock) {
8343: $thisallowed='D';
8344: } elsif ($noblockcheck) {
8345: $thisallowed='F';
8346: } else {
8347: my @blockers = &has_comm_blocking($priv,'',$refuri,'',1);
8348: if (@blockers > 0) {
8349: $thisallowed = 'B';
8350: } else {
8351: $thisallowed='F';
8352: }
8353: }
8354: }
8355: }
8356: }
8357: }
8358: }
8359:
8360: if ($priv eq 'bre'
8361: && $thisallowed ne 'F'
8362: && $thisallowed ne '2'
8363: && &is_portfolio_url($uri)) {
8364: $thisallowed = &portfolio_access($uri,$clientip);
8365: }
8366:
8367: # Full access at system, domain or course-wide level? Exit.
8368: if ($thisallowed=~/F/) {
8369: return 'F';
8370: }
8371:
8372: # If this is generating or modifying users, exit with special codes
8373:
8374: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
8375: if (($priv eq 'cca') || ($priv eq 'caa')) {
8376: my ($audom,$auname)=split('/',$uri);
8377: # no author name given, so this just checks on the general right to make a co-author in this domain
8378: unless ($auname) { return $thisallowed; }
8379: # an author name is given, so we are about to actually make a co-author for a certain account
8380: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
8381: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
8382: ($audom ne $env{'request.role.domain'}))) { return ''; }
8383: }
8384: return $thisallowed;
8385: }
8386: #
8387: # Gathered so far: system, domain and course wide privileges
8388: #
8389: # Course: See if uri or referer is an individual resource that is part of
8390: # the course
8391:
8392: if ($env{'request.course.id'}) {
8393:
8394: # If this is modifying password (internal auth) domains must match for user and user's role.
8395:
8396: if ($priv eq 'mip') {
8397: if ($env{'user.domain'} eq $env{'request.role.domain'}) {
8398: return $thisallowed;
8399: } else {
8400: return '';
8401: }
8402: }
8403:
8404: $courseprivid=$env{'request.course.id'};
8405: if ($env{'request.course.sec'}) {
8406: $courseprivid.='/'.$env{'request.course.sec'};
8407: }
8408: $courseprivid=~s/\_/\//;
8409: my $checkreferer=1;
8410: my ($match,$cond)=&is_on_map($uri);
8411: if ($match) {
8412: $statecond=$cond;
8413: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
8414: =~/\Q$priv\E\&([^\:]*)/) {
8415: my $value = $1;
8416: if ($priv eq 'bre') {
8417: if ($noblockcheck) {
8418: $thisallowed.=$value;
8419: } else {
8420: my @blockers = &has_comm_blocking($priv,$symb,$uri,$ignorecache);
8421: if (@blockers > 0) {
8422: $thisallowed = 'B';
8423: } else {
8424: $thisallowed.=$value;
8425: }
8426: }
8427: } else {
8428: $thisallowed.=$value;
8429: }
8430: $checkreferer=0;
8431: }
8432: }
8433:
8434: if ($checkreferer) {
8435: my $refuri=$env{'httpref.'.$orguri};
8436: unless ($refuri) {
8437: foreach my $key (keys(%env)) {
8438: if ($key=~/^httpref\..*\*/) {
8439: my $pattern=$key;
8440: $pattern=~s/^httpref\.\/res\///;
8441: $pattern=~s/\*/\[\^\/\]\+/g;
8442: $pattern=~s/\//\\\//g;
8443: if ($orguri=~/$pattern/) {
8444: $refuri=$env{$key};
8445: }
8446: }
8447: }
8448: }
8449:
8450: if ($refuri) {
8451: $refuri=&declutter($refuri);
8452: my ($match,$cond)=&is_on_map($refuri);
8453: if ($match) {
8454: my $refstatecond=$cond;
8455: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
8456: =~/\Q$priv\E\&([^\:]*)/) {
8457: my $value = $1;
8458: if ($priv eq 'bre') {
8459: my $deeplinkblock = &deeplink_check($priv,$symb,$refuri);
8460: if ($deeplinkblock) {
8461: $thisallowed = 'D';
8462: } elsif ($noblockcheck) {
8463: $thisallowed.=$value;
8464: } else {
8465: my @blockers = &has_comm_blocking($priv,'',$refuri,'',1);
8466: if (@blockers > 0) {
8467: $thisallowed = 'B';
8468: } else {
8469: $thisallowed.=$value;
8470: }
8471: }
8472: } else {
8473: $thisallowed.=$value;
8474: }
8475: $uri=$refuri;
8476: $statecond=$refstatecond;
8477: }
8478: }
8479: }
8480: }
8481: }
8482:
8483: #
8484: # Gathered now: all privileges that could apply, and condition number
8485: #
8486: #
8487: # Full or no access?
8488: #
8489:
8490: if ($thisallowed=~/F/) {
8491: return 'F';
8492: }
8493:
8494: unless ($thisallowed) {
8495: return '';
8496: }
8497:
8498: # Restrictions exist, deal with them
8499: #
8500: # C:according to course preferences
8501: # R:according to resource settings
8502: # L:unless locked
8503: # X:according to user session state
8504: #
8505:
8506: # Possibly locked functionality, check all courses
8507: # Locks might take effect only after 10 minutes cache expiration for other
8508: # courses, and 2 minutes for current course
8509:
8510: my $envkey;
8511: if ($thisallowed=~/L/) {
8512: foreach $envkey (keys(%env)) {
8513: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
8514: my $courseid=$2;
8515: my $roleid=$1.'.'.$2;
8516: $courseid=~s/^\///;
8517: my $expiretime=600;
8518: if ($env{'request.role'} eq $roleid) {
8519: $expiretime=120;
8520: }
8521: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
8522: my $prefix='course.'.$cdom.'_'.$cnum.'.';
8523: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
8524: &coursedescription($courseid,{'freshen_cache' => 1});
8525: }
8526: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
8527: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
8528: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
8529: &log($env{'user.domain'},$env{'user.name'},
8530: $env{'user.home'},
8531: 'Locked by res: '.$priv.' for '.$uri.' due to '.
8532: $cdom.'/'.$cnum.'/'.$csec.' expire '.
8533: $env{$prefix.'priv.'.$priv.'.lock.expire'});
8534: return '';
8535: }
8536: }
8537: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
8538: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
8539: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
8540: &log($env{'user.domain'},$env{'user.name'},
8541: $env{'user.home'},
8542: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
8543: $cdom.'/'.$cnum.'/'.$csec.' expire '.
8544: $env{$prefix.'priv.'.$priv.'.lock.expire'});
8545: return '';
8546: }
8547: }
8548: }
8549: }
8550: }
8551:
8552: #
8553: # Rest of the restrictions depend on selected course
8554: #
8555:
8556: unless ($env{'request.course.id'}) {
8557: if ($thisallowed eq 'A') {
8558: return 'A';
8559: } elsif ($thisallowed eq 'B') {
8560: return 'B';
8561: } else {
8562: return '1';
8563: }
8564: }
8565:
8566: #
8567: # Now user is definitely in a course
8568: #
8569:
8570:
8571: # Course preferences
8572:
8573: if ($thisallowed=~/C/) {
8574: my $rolecode=(split(/\./,$env{'request.role'}))[0];
8575: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
8576: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
8577: =~/\Q$rolecode\E/) {
8578: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
8579: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
8580: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
8581: $env{'request.course.id'});
8582: }
8583: return '';
8584: }
8585:
8586: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
8587: =~/\Q$unamedom\E/) {
8588: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
8589: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
8590: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
8591: $env{'request.course.id'});
8592: }
8593: return '';
8594: }
8595: }
8596:
8597: # Resource preferences
8598:
8599: if ($thisallowed=~/R/) {
8600: my $rolecode=(split(/\./,$env{'request.role'}))[0];
8601: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
8602: if (($priv ne 'pch') && ($priv ne 'plc')) {
8603: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
8604: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
8605: }
8606: return '';
8607: }
8608: }
8609:
8610: # Restricted by state or randomout?
8611:
8612: if ($thisallowed=~/X/) {
8613: if ($env{'acc.randomout'}) {
8614: if (!$symb) { $symb=&symbread($uri,1); }
8615: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
8616: return '';
8617: }
8618: }
8619: if (&condval($statecond)) {
8620: return '2';
8621: } else {
8622: return '';
8623: }
8624: }
8625:
8626: if ($thisallowed eq 'A') {
8627: return 'A';
8628: } elsif ($thisallowed eq 'B') {
8629: return 'B';
8630: } elsif ($thisallowed eq 'D') {
8631: return 'D';
8632: }
8633: return 'F';
8634: }
8635:
8636: # ------------------------------------------- Check construction space access
8637:
8638: sub constructaccess {
8639: my ($url,$setpriv)=@_;
8640:
8641: # We do not allow editing of previous versions of files
8642: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
8643:
8644: # Get username and domain from URL
8645: my ($ownername,$ownerdomain,$ownerhome);
8646:
8647: ($ownerdomain,$ownername) =
8648: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)(?:/daxepage|/daxeopen)?/priv/($match_domain)/($match_username)(?:/|$)});
8649:
8650: # The URL does not really point to any authorspace, forget it
8651: unless (($ownername) && ($ownerdomain)) { return ''; }
8652:
8653: # Now we need to see if the user has access to the authorspace of
8654: # $ownername at $ownerdomain
8655:
8656: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
8657: # Real author for this?
8658: $ownerhome = $env{'user.home'};
8659: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
8660: return ($ownername,$ownerdomain,$ownerhome);
8661: }
8662: } else {
8663: # Co-author for this?
8664: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
8665: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
8666: $ownerhome = &homeserver($ownername,$ownerdomain);
8667: return ($ownername,$ownerdomain,$ownerhome);
8668: }
8669: if ($env{'request.course.id'}) {
8670: if (($ownername eq $env{'course.'.$env{'request.course.id'}.'.num'}) &&
8671: ($ownerdomain eq $env{'course.'.$env{'request.course.id'}.'.domain'})) {
8672: if (&allowed('mdc',$env{'request.course.id'})) {
8673: $ownerhome = $env{'course.'.$env{'request.course.id'}.'.home'};
8674: return ($ownername,$ownerdomain,$ownerhome);
8675: }
8676: }
8677: }
8678: }
8679:
8680: # We don't have any access right now. If we are not possibly going to do anything about this,
8681: # we might as well leave
8682: unless ($setpriv) { return ''; }
8683:
8684: # Backdoor access?
8685: my $allowed=&allowed('eco',$ownerdomain);
8686: # Nope
8687: unless ($allowed) { return ''; }
8688: # Looks like we may have access, but could be locked by the owner of the construction space
8689: if ($allowed eq 'U') {
8690: my %blocked=&get('environment',['domcoord.author'],
8691: $ownerdomain,$ownername);
8692: # Is blocked by owner
8693: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
8694: }
8695: if (($allowed eq 'F') || ($allowed eq 'U')) {
8696: # Grant temporary access
8697: my $then=$env{'user.login.time'};
8698: my $update=$env{'user.update.time'};
8699: if (!$update) { $update = $then; }
8700: my $refresh=$env{'user.refresh.time'};
8701: if (!$refresh) { $refresh = $update; }
8702: my $now = time;
8703: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
8704: $now,'ca','constructaccess');
8705: $ownerhome = &homeserver($ownername,$ownerdomain);
8706: return($ownername,$ownerdomain,$ownerhome);
8707: }
8708: # No business here
8709: return '';
8710: }
8711:
8712: # ----------------------------------------------------------- Content Blocking
8713:
8714: {
8715: # Caches for faster Course Contents display where content blocking
8716: # is in operation (i.e., interval param set) for timed quiz.
8717: #
8718: # User for whom data are being temporarily cached.
8719: my $cacheduser='';
8720: # Course for which data are being temporarily cached.
8721: my $cachedcid='';
8722: # Cached blockers for this user (a hash of blocking items).
8723: my %cachedblockers=();
8724: # When the data were last cached.
8725: my $cachedlast='';
8726:
8727: sub load_all_blockers {
8728: my ($uname,$udom)=@_;
8729: if (($uname ne '') && ($udom ne '')) {
8730: if (($cacheduser eq $uname.':'.$udom) &&
8731: ($cachedcid eq $env{'request.course.id'}) &&
8732: (abs($cachedlast-time)<5)) {
8733: return;
8734: }
8735: }
8736: $cachedlast=time;
8737: $cacheduser=$uname.':'.$udom;
8738: $cachedcid=$env{'request.course.id'};
8739: %cachedblockers = &get_commblock_resources();
8740: return;
8741: }
8742:
8743: sub get_comm_blocks {
8744: my ($cdom,$cnum) = @_;
8745: if ($cdom eq '' || $cnum eq '') {
8746: return unless ($env{'request.course.id'});
8747: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
8748: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8749: }
8750: my %commblocks;
8751: my $hashid=$cdom.'_'.$cnum;
8752: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
8753: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
8754: %commblocks = %{$blocksref};
8755: } else {
8756: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
8757: my $cachetime = 600;
8758: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
8759: }
8760: return %commblocks;
8761: }
8762:
8763: sub get_commblock_resources {
8764: my ($blocks) = @_;
8765: my %blockers = ();
8766: return %blockers unless ($env{'request.course.id'});
8767: return %blockers if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
8768: my %commblocks;
8769: if (ref($blocks) eq 'HASH') {
8770: %commblocks = %{$blocks};
8771: } else {
8772: %commblocks = &get_comm_blocks();
8773: }
8774: return %blockers unless (keys(%commblocks) > 0);
8775: my $navmap = Apache::lonnavmaps::navmap->new();
8776: return %blockers unless (ref($navmap));
8777: my $now = time;
8778: foreach my $block (keys(%commblocks)) {
8779: if ($block =~ /^(\d+)____(\d+)$/) {
8780: my ($start,$end) = ($1,$2);
8781: if ($start <= $now && $end >= $now) {
8782: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
8783: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
8784: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
8785: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
8786: $blockers{$block}{maps} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
8787: }
8788: }
8789: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
8790: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
8791: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
8792: }
8793: }
8794: }
8795: }
8796: }
8797: } elsif ($block =~ /^firstaccess____(.+)$/) {
8798: my $item = $1;
8799: my @to_test;
8800: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
8801: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
8802: my @interval;
8803: my $type = 'map';
8804: if ($item eq 'course') {
8805: $type = 'course';
8806: @interval=&EXT("resource.0.interval");
8807: } else {
8808: if ($item =~ /___\d+___/) {
8809: $type = 'resource';
8810: @interval=&EXT("resource.0.interval",$item);
8811: if (ref($navmap)) {
8812: my $res = $navmap->getBySymb($item);
8813: push(@to_test,$res);
8814: }
8815: } else {
8816: my $mapsymb = &symbread($item,1);
8817: if ($mapsymb) {
8818: if (ref($navmap)) {
8819: my $mapres = $navmap->getBySymb($mapsymb);
8820: if (ref($mapres)) {
8821: my $first = $mapres->map_start();
8822: my $finish = $mapres->map_finish();
8823: my $it = $navmap->getIterator($first,$finish,undef,0,0);
8824: if (ref($it)) {
8825: my $res;
8826: while ($res = $it->next(undef,1)) {
8827: next unless (ref($res));
8828: my $symb = $res->symb();
8829: next if (($symb eq $mapsymb) || ($symb eq ''));
8830: @interval=&EXT("resource.0.interval",$symb);
8831: if ($interval[1] eq 'map') {
8832: if ($res->answerable()) {
8833: push(@to_test,$res);
8834: last;
8835: }
8836: }
8837: }
8838: }
8839: }
8840: }
8841: }
8842: }
8843: }
8844: if ($interval[0] =~ /^(\d+)/) {
8845: my $timelimit = $1;
8846: my $first_access;
8847: if ($type eq 'resource') {
8848: $first_access=&get_first_access($interval[1],$item);
8849: } elsif ($type eq 'map') {
8850: $first_access=&get_first_access($interval[1],undef,$item);
8851: } else {
8852: $first_access=&get_first_access($interval[1]);
8853: }
8854: if ($first_access) {
8855: my $timesup = $first_access+$timelimit;
8856: if ($timesup > $now) {
8857: my $activeblock;
8858: foreach my $res (@to_test) {
8859: if ($res->answerable()) {
8860: $activeblock = 1;
8861: last;
8862: }
8863: }
8864: if ($activeblock) {
8865: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
8866: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
8867: $blockers{$block}{'maps'} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
8868: }
8869: }
8870: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
8871: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
8872: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
8873: }
8874: }
8875: }
8876: }
8877: }
8878: }
8879: }
8880: }
8881: }
8882: }
8883: return %blockers;
8884: }
8885:
8886: sub has_comm_blocking {
8887: my ($priv,$symb,$uri,$ignoresymbdb,$noenccheck,$blocked,$blocks) = @_;
8888: my @blockers;
8889: return unless ($env{'request.course.id'});
8890: return unless ($priv eq 'bre');
8891: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
8892: return if ($env{'request.state'} eq 'construct');
8893: my %blockinfo;
8894: if (ref($blocks) eq 'HASH') {
8895: %blockinfo = &get_commblock_resources($blocks);
8896: } else {
8897: &load_all_blockers($env{'user.name'},$env{'user.domain'});
8898: %blockinfo = %cachedblockers;
8899: }
8900: return unless (keys(%blockinfo) > 0);
8901: my (%possibles,@symbs);
8902: if (!$symb) {
8903: $symb = &symbread($uri,1,1,1,\%possibles,$ignoresymbdb,$noenccheck);
8904: }
8905: if ($symb) {
8906: @symbs = ($symb);
8907: } elsif (keys(%possibles)) {
8908: @symbs = keys(%possibles);
8909: }
8910: my $noblock;
8911: foreach my $symb (@symbs) {
8912: last if ($noblock);
8913: my ($map,$resid,$resurl)=&decode_symb($symb);
8914: foreach my $block (keys(%blockinfo)) {
8915: if ($block =~ /^firstaccess____(.+)$/) {
8916: my $item = $1;
8917: unless ($blocked) {
8918: if (($item eq $map) || ($item eq $symb)) {
8919: $noblock = 1;
8920: last;
8921: }
8922: }
8923: }
8924: if (ref($blockinfo{$block}) eq 'HASH') {
8925: if (ref($blockinfo{$block}{'resources'}) eq 'HASH') {
8926: if ($blockinfo{$block}{'resources'}{$symb}) {
8927: unless (grep(/^\Q$block\E$/,@blockers)) {
8928: push(@blockers,$block);
8929: }
8930: }
8931: }
8932: if (ref($blockinfo{$block}{'maps'}) eq 'HASH') {
8933: if ($blockinfo{$block}{'maps'}{$map}) {
8934: unless (grep(/^\Q$block\E$/,@blockers)) {
8935: push(@blockers,$block);
8936: }
8937: }
8938: }
8939: }
8940: }
8941: }
8942: unless ($noblock) {
8943: return @blockers;
8944: }
8945: return;
8946: }
8947: }
8948:
8949: sub deeplink_check {
8950: my ($priv,$symb,$uri) = @_;
8951: return unless ($env{'request.course.id'});
8952: return unless ($priv eq 'bre');
8953: return if ($env{'request.state'} eq 'construct');
8954: return if ($env{'request.role.adv'});
8955: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8956: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
8957: my (%possibles,@symbs);
8958: if (!$symb) {
8959: $symb = &symbread($uri,1,1,1,\%possibles);
8960: }
8961: if ($symb) {
8962: @symbs = ($symb);
8963: } elsif (keys(%possibles)) {
8964: @symbs = keys(%possibles);
8965: }
8966:
8967: my ($login,$switchrole,$allow);
8968: if ($env{'request.deeplink.login'} =~ m{^\Q/tiny/$cdom/\E(\w+)$}) {
8969: my $key = $1;
8970: my $tinyurl;
8971: my ($result,$cached)=&Apache::lonnet::is_cached_new('tiny',$cdom."\0".$key);
8972: if (defined($cached)) {
8973: $tinyurl = $result;
8974: } else {
8975: my $configuname = &Apache::lonnet::get_domainconfiguser($cdom);
8976: my %currtiny = &Apache::lonnet::get('tiny',[$key],$cdom,$configuname);
8977: if ($currtiny{$key} ne '') {
8978: $tinyurl = $currtiny{$key};
8979: &Apache::lonnet::do_cache_new('tiny',$cdom."\0".$key,$currtiny{$key},600);
8980: }
8981: }
8982: if ($tinyurl ne '') {
8983: my ($cnumreq,$posslogin) = split(/\&/,$tinyurl);
8984: if ($cnumreq eq $cnum) {
8985: $login = $posslogin;
8986: } else {
8987: $switchrole = 1;
8988: }
8989: }
8990: }
8991: foreach my $symb (@symbs) {
8992: last if ($allow);
8993: my $deeplink = &EXT("resource.0.deeplink",$symb);
8994: if ($deeplink eq '') {
8995: $allow = 1;
8996: } else {
8997: my ($listed,$scope,$access) = split(/,/,$deeplink);
8998: if ($access eq 'any') {
8999: $allow = 1;
9000: } elsif ($login) {
9001: if ($access eq 'only') {
9002: if ($scope eq 'res') {
9003: if ($symb eq $login) {
9004: $allow = 1;
9005: }
9006: } elsif ($scope eq 'map') {
9007: #FIXME Compare map for $env{'request.deeplink.login'} with map for $symb
9008: } elsif ($scope eq 'rec') {
9009: #FIXME Recurse up for $env{'request.deeplink.login'} with map for $symb
9010: }
9011: } else {
9012: my ($acctype,$item) = split(/:/,$access);
9013: if (($acctype eq 'lti') && ($env{'user.linkprotector'})) {
9014: if (grep(/^\Q$item\E$/,split(/,/,$env{'user.linkprotector'}))) {
9015: my %tinyurls = &get('tiny',[$symb],$cdom,$cnum);
9016: if (grep(/\Q$tinyurls{$symb}\E$/,split(/,/,$env{'user.linkproturis'}))) {
9017: $allow = 1;
9018: }
9019: }
9020: } elsif (($acctype eq 'key') && ($env{'user.deeplinkkey'})) {
9021: if (grep(/^\Q$item\E$/,split(/,/,$env{'user.deeplinkkey'}))) {
9022: my %tinyurls = &get('tiny',[$symb],$cdom,$cnum);
9023: if (grep(/\Q$tinyurls{$symb}\E$/,split(/,/,$env{'user.keyedlinkuri'}))) {
9024: $allow = 1;
9025: }
9026: }
9027: }
9028: }
9029: }
9030: }
9031: }
9032: return if ($allow);
9033: return 1;
9034: }
9035:
9036: # -------------------------------- Deversion and split uri into path an filename
9037:
9038: #
9039: # Removes the version from a URI and
9040: # splits it in to its filename and path to the filename.
9041: # Seems like File::Basename could have done this more clearly.
9042: # Parameters:
9043: # $uri - input URI
9044: # Returns:
9045: # Two element list consisting of
9046: # $pathname - the URI up to and excluding the trailing /
9047: # $filename - The part of the URI following the last /
9048: # NOTE:
9049: # Another realization of this is simply:
9050: # use File::Basename;
9051: # ...
9052: # $uri = shift;
9053: # $filename = basename($uri);
9054: # $path = dirname($uri);
9055: # return ($filename, $path);
9056: #
9057: # The implementation below is probably faster however.
9058: #
9059: sub split_uri_for_cond {
9060: my $uri=&deversion(&declutter(shift));
9061: my @uriparts=split(/\//,$uri);
9062: my $filename=pop(@uriparts);
9063: my $pathname=join('/',@uriparts);
9064: return ($pathname,$filename);
9065: }
9066: # --------------------------------------------------- Is a resource on the map?
9067:
9068: sub is_on_map {
9069: my ($pathname,$filename) = &split_uri_for_cond(shift);
9070: #Trying to find the conditional for the file
9071: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
9072: /\&\Q$filename\E\:([\d\|]+)\&/);
9073: if ($match) {
9074: return (1,$1);
9075: } else {
9076: return (0,0);
9077: }
9078: }
9079:
9080: # --------------------------------------------------------- Get symb from alias
9081:
9082: sub get_symb_from_alias {
9083: my $symb=shift;
9084: my ($map,$resid,$url)=&decode_symb($symb);
9085: # Already is a symb
9086: if ($url) { return $symb; }
9087: # Must be an alias
9088: my $aliassymb='';
9089: my %bighash;
9090: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9091: &GDBM_READER(),0640)) {
9092: my $rid=$bighash{'mapalias_'.$symb};
9093: if ($rid) {
9094: my ($mapid,$resid)=split(/\./,$rid);
9095: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
9096: $resid,$bighash{'src_'.$rid});
9097: }
9098: untie %bighash;
9099: }
9100: return $aliassymb;
9101: }
9102:
9103: # ----------------------------------------------------------------- Define Role
9104:
9105: sub definerole {
9106: if (allowed('mcr','/')) {
9107: my ($rolename,$sysrole,$domrole,$courole,$uname,$udom)=@_;
9108: foreach my $role (split(':',$sysrole)) {
9109: my ($crole,$cqual)=split(/\&/,$role);
9110: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
9111: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
9112: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
9113: return "refused:s:$crole&$cqual";
9114: }
9115: }
9116: }
9117: foreach my $role (split(':',$domrole)) {
9118: my ($crole,$cqual)=split(/\&/,$role);
9119: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
9120: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
9121: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
9122: return "refused:d:$crole&$cqual";
9123: }
9124: }
9125: }
9126: foreach my $role (split(':',$courole)) {
9127: my ($crole,$cqual)=split(/\&/,$role);
9128: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
9129: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
9130: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
9131: return "refused:c:$crole&$cqual";
9132: }
9133: }
9134: }
9135: my $uhome;
9136: if (($uname ne '') && ($udom ne '')) {
9137: $uhome = &homeserver($uname,$udom);
9138: return $uhome if ($uhome eq 'no_host');
9139: } else {
9140: $uname = $env{'user.name'};
9141: $udom = $env{'user.domain'};
9142: $uhome = $env{'user.home'};
9143: }
9144: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
9145: "$udom:$uname:rolesdef_$rolename=".
9146: escape($sysrole.'_'.$domrole.'_'.$courole);
9147: return reply($command,$uhome);
9148: } else {
9149: return 'refused';
9150: }
9151: }
9152:
9153: # ---------------- Make a metadata query against the network of library servers
9154:
9155: sub metadata_query {
9156: my ($query,$custom,$customshow,$server_array,$domains_hash)=@_;
9157: my %rhash;
9158: my %libserv = &all_library();
9159: my @server_list = (defined($server_array) ? @$server_array
9160: : keys(%libserv) );
9161: for my $server (@server_list) {
9162: my $domains = '';
9163: if (ref($domains_hash) eq 'HASH') {
9164: $domains = $domains_hash->{$server};
9165: }
9166: unless ($custom or $customshow) {
9167: my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server);
9168: $rhash{$server}=$reply;
9169: }
9170: else {
9171: my $reply=&reply("querysend:".&escape($query).':'.
9172: &escape($custom).':'.&escape($customshow).':'.&escape($domains),
9173: $server);
9174: $rhash{$server}=$reply;
9175: }
9176: }
9177: return \%rhash;
9178: }
9179:
9180: # ----------------------------------------- Send log queries and wait for reply
9181:
9182: sub log_query {
9183: my ($uname,$udom,$query,%filters)=@_;
9184: my $uhome=&homeserver($uname,$udom);
9185: if ($uhome eq 'no_host') { return 'error: no_host'; }
9186: my $uhost=&hostname($uhome);
9187: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
9188: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
9189: $uhome);
9190: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
9191: return get_query_reply($queryid);
9192: }
9193:
9194: # -------------------------- Update MySQL table for portfolio file
9195:
9196: sub update_portfolio_table {
9197: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
9198: if ($group ne '') {
9199: $file_name =~s /^\Q$group\E//;
9200: }
9201: my $homeserver = &homeserver($uname,$udom);
9202: my $queryid=
9203: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
9204: ':'.&escape($file_name).':'.$action,$homeserver);
9205: my $reply = &get_query_reply($queryid);
9206: return $reply;
9207: }
9208:
9209: # -------------------------- Update MySQL allusers table
9210:
9211: sub update_allusers_table {
9212: my ($uname,$udom,$names) = @_;
9213: my $homeserver = &homeserver($uname,$udom);
9214: my $queryid=
9215: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
9216: 'lastname='.&escape($names->{'lastname'}).'%%'.
9217: 'firstname='.&escape($names->{'firstname'}).'%%'.
9218: 'middlename='.&escape($names->{'middlename'}).'%%'.
9219: 'generation='.&escape($names->{'generation'}).'%%'.
9220: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
9221: 'id='.&escape($names->{'id'}),$homeserver);
9222: return;
9223: }
9224:
9225: # ------- Request retrieval of institutional classlists for course(s)
9226:
9227: sub fetch_enrollment_query {
9228: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
9229: my ($homeserver,$sleep,$loopmax);
9230: my $maxtries = 1;
9231: if ($context eq 'automated') {
9232: $homeserver = $perlvar{'lonHostID'};
9233: $sleep = 2;
9234: $loopmax = 100;
9235: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
9236: } else {
9237: $homeserver = &homeserver($cnum,$dom);
9238: }
9239: my $host=&hostname($homeserver);
9240: my $cmd = '';
9241: foreach my $affiliate (keys(%{$affiliatesref})) {
9242: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
9243: }
9244: $cmd =~ s/%%$//;
9245: $cmd = &escape($cmd);
9246: my $query = 'fetchenrollment';
9247: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
9248: unless ($queryid=~/^\Q$host\E\_/) {
9249: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
9250: return 'error: '.$queryid;
9251: }
9252: my $reply = &get_query_reply($queryid,$sleep,$loopmax);
9253: my $tries = 1;
9254: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
9255: $reply = &get_query_reply($queryid,$sleep,$loopmax);
9256: $tries ++;
9257: }
9258: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
9259: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
9260: } else {
9261: my @responses = split(/:/,$reply);
9262: if (grep { $_ eq $homeserver } ¤t_machine_ids()) {
9263: foreach my $line (@responses) {
9264: my ($key,$value) = split(/=/,$line,2);
9265: $$replyref{$key} = $value;
9266: }
9267: } else {
9268: my $pathname = LONCAPA::tempdir();
9269: foreach my $line (@responses) {
9270: my ($key,$value) = split(/=/,$line);
9271: $$replyref{$key} = $value;
9272: if ($value > 0) {
9273: foreach my $item (@{$$affiliatesref{$key}}) {
9274: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
9275: my $destname = $pathname.'/'.$filename;
9276: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
9277: if ($xml_classlist =~ /^error/) {
9278: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
9279: } else {
9280: if ( open(FILE,">",$destname) ) {
9281: print FILE &unescape($xml_classlist);
9282: close(FILE);
9283: } else {
9284: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
9285: }
9286: }
9287: }
9288: }
9289: }
9290: }
9291: return 'ok';
9292: }
9293: return 'error';
9294: }
9295:
9296: sub get_query_reply {
9297: my ($queryid,$sleep,$loopmax) = @_;;
9298: if (($sleep eq '') || ($sleep !~ /^\d+\.?\d*$/)) {
9299: $sleep = 0.2;
9300: }
9301: if (($loopmax eq '') || ($loopmax =~ /\D/)) {
9302: $loopmax = 100;
9303: }
9304: my $replyfile=LONCAPA::tempdir().$queryid;
9305: my $reply='';
9306: for (1..$loopmax) {
9307: sleep($sleep);
9308: if (-e $replyfile.'.end') {
9309: if (open(my $fh,"<",$replyfile)) {
9310: $reply = join('',<$fh>);
9311: close($fh);
9312: } else { return 'error: reply_file_error'; }
9313: return &unescape($reply);
9314: }
9315: }
9316: return 'timeout:'.$queryid;
9317: }
9318:
9319: sub courselog_query {
9320: #
9321: # possible filters:
9322: # url: url or symb
9323: # username
9324: # domain
9325: # action: view, submit, grade
9326: # start: timestamp
9327: # end: timestamp
9328: #
9329: my (%filters)=@_;
9330: unless ($env{'request.course.id'}) { return 'no_course'; }
9331: if ($filters{'url'}) {
9332: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
9333: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
9334: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
9335: }
9336: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
9337: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
9338: return &log_query($cname,$cdom,'courselog',%filters);
9339: }
9340:
9341: sub userlog_query {
9342: #
9343: # possible filters:
9344: # action: log check role
9345: # start: timestamp
9346: # end: timestamp
9347: #
9348: my ($uname,$udom,%filters)=@_;
9349: return &log_query($uname,$udom,'userlog',%filters);
9350: }
9351:
9352: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
9353:
9354: sub auto_run {
9355: my ($cnum,$cdom) = @_;
9356: my $response = 0;
9357: my $settings;
9358: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
9359: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
9360: $settings = $domconfig{'autoenroll'};
9361: if ($settings->{'run'} eq '1') {
9362: $response = 1;
9363: }
9364: } else {
9365: my $homeserver;
9366: if (&is_course($cdom,$cnum)) {
9367: $homeserver = &homeserver($cnum,$cdom);
9368: } else {
9369: $homeserver = &domain($cdom,'primary');
9370: }
9371: if ($homeserver ne 'no_host') {
9372: $response = &reply('autorun:'.$cdom,$homeserver);
9373: }
9374: }
9375: return $response;
9376: }
9377:
9378: sub auto_get_sections {
9379: my ($cnum,$cdom,$inst_coursecode) = @_;
9380: my $homeserver;
9381: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9382: $homeserver = &homeserver($cnum,$cdom);
9383: }
9384: if (!defined($homeserver)) {
9385: if ($cdom =~ /^$match_domain$/) {
9386: $homeserver = &domain($cdom,'primary');
9387: }
9388: }
9389: my @secs;
9390: if (defined($homeserver)) {
9391: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
9392: unless ($response eq 'refused') {
9393: @secs = split(/:/,$response);
9394: }
9395: }
9396: return @secs;
9397: }
9398:
9399: sub auto_new_course {
9400: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
9401: my $homeserver = &homeserver($cnum,$cdom);
9402: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
9403: return $response;
9404: }
9405:
9406: sub auto_validate_courseID {
9407: my ($cnum,$cdom,$inst_course_id) = @_;
9408: my $homeserver = &homeserver($cnum,$cdom);
9409: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
9410: return $response;
9411: }
9412:
9413: sub auto_validate_instcode {
9414: my ($cnum,$cdom,$instcode,$owner) = @_;
9415: my ($homeserver,$response);
9416: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9417: $homeserver = &homeserver($cnum,$cdom);
9418: }
9419: if (!defined($homeserver)) {
9420: if ($cdom =~ /^$match_domain$/) {
9421: $homeserver = &domain($cdom,'primary');
9422: }
9423: }
9424: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
9425: &escape($instcode).':'.&escape($owner),$homeserver));
9426: my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
9427: return ($outcome,$description,$defaultcredits);
9428: }
9429:
9430: sub auto_validate_inst_crosslist {
9431: my ($cnum,$cdom,$instcode,$inst_xlist,$coowner) = @_;
9432: my ($homeserver,$response);
9433: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9434: $homeserver = &homeserver($cnum,$cdom);
9435: }
9436: if (!defined($homeserver)) {
9437: if ($cdom =~ /^$match_domain$/) {
9438: $homeserver = &domain($cdom,'primary');
9439: }
9440: }
9441: unless (($homeserver eq '') || ($homeserver eq 'no_host')) {
9442: $response=&reply('autovalidateinstcrosslist:'.$cdom.':'.
9443: &escape($instcode).':'.&escape($inst_xlist).':'.
9444: &escape($coowner),$homeserver);
9445: }
9446: return $response;
9447: }
9448:
9449: sub auto_create_password {
9450: my ($cnum,$cdom,$authparam,$udom) = @_;
9451: my ($homeserver,$response);
9452: my $create_passwd = 0;
9453: my $authchk = '';
9454: if ($udom =~ /^$match_domain$/) {
9455: $homeserver = &domain($udom,'primary');
9456: }
9457: if ($homeserver eq '') {
9458: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9459: $homeserver = &homeserver($cnum,$cdom);
9460: }
9461: }
9462: if ($homeserver eq '') {
9463: $authchk = 'nodomain';
9464: } else {
9465: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
9466: if ($response eq 'refused') {
9467: $authchk = 'refused';
9468: } else {
9469: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
9470: }
9471: }
9472: return ($authparam,$create_passwd,$authchk);
9473: }
9474:
9475: sub auto_photo_permission {
9476: my ($cnum,$cdom,$students) = @_;
9477: my $homeserver = &homeserver($cnum,$cdom);
9478: my ($outcome,$perm_reqd,$conditions) =
9479: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
9480: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
9481: return (undef,undef);
9482: }
9483: return ($outcome,$perm_reqd,$conditions);
9484: }
9485:
9486: sub auto_checkphotos {
9487: my ($uname,$udom,$pid) = @_;
9488: my $homeserver = &homeserver($uname,$udom);
9489: my ($result,$resulttype);
9490: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
9491: &escape($uname).':'.&escape($pid),
9492: $homeserver));
9493: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
9494: return (undef,undef);
9495: }
9496: if ($outcome) {
9497: ($result,$resulttype) = split(/:/,$outcome);
9498: }
9499: return ($result,$resulttype);
9500: }
9501:
9502: sub auto_photochoice {
9503: my ($cnum,$cdom) = @_;
9504: my $homeserver = &homeserver($cnum,$cdom);
9505: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
9506: &escape($cdom),
9507: $homeserver)));
9508: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
9509: return (undef,undef);
9510: }
9511: return ($update,$comment);
9512: }
9513:
9514: sub auto_photoupdate {
9515: my ($affiliatesref,$dom,$cnum,$photo) = @_;
9516: my $homeserver = &homeserver($cnum,$dom);
9517: my $host=&hostname($homeserver);
9518: my $cmd = '';
9519: my $maxtries = 1;
9520: foreach my $affiliate (keys(%{$affiliatesref})) {
9521: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
9522: }
9523: $cmd =~ s/%%$//;
9524: $cmd = &escape($cmd);
9525: my $query = 'institutionalphotos';
9526: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
9527: unless ($queryid=~/^\Q$host\E\_/) {
9528: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
9529: return 'error: '.$queryid;
9530: }
9531: my $reply = &get_query_reply($queryid);
9532: my $tries = 1;
9533: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
9534: $reply = &get_query_reply($queryid);
9535: $tries ++;
9536: }
9537: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
9538: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
9539: } else {
9540: my @responses = split(/:/,$reply);
9541: my $outcome = shift(@responses);
9542: foreach my $item (@responses) {
9543: my ($key,$value) = split(/=/,$item);
9544: $$photo{$key} = $value;
9545: }
9546: return $outcome;
9547: }
9548: return 'error';
9549: }
9550:
9551: sub auto_instcode_format {
9552: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
9553: $cat_order) = @_;
9554: my $courses = '';
9555: my @homeservers;
9556: if ($caller eq 'global') {
9557: my %servers = &get_servers($codedom,'library');
9558: foreach my $tryserver (keys(%servers)) {
9559: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
9560: push(@homeservers,$tryserver);
9561: }
9562: }
9563: } elsif ($caller eq 'requests') {
9564: if ($codedom =~ /^$match_domain$/) {
9565: my $chome = &domain($codedom,'primary');
9566: unless ($chome eq 'no_host') {
9567: push(@homeservers,$chome);
9568: }
9569: }
9570: } else {
9571: push(@homeservers,&homeserver($caller,$codedom));
9572: }
9573: foreach my $code (keys(%{$instcodes})) {
9574: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
9575: }
9576: chop($courses);
9577: my $ok_response = 0;
9578: my $response;
9579: while (@homeservers > 0 && $ok_response == 0) {
9580: my $server = shift(@homeservers);
9581: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
9582: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
9583: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
9584: split(/:/,$response);
9585: %{$codes} = (%{$codes},&str2hash($codes_str));
9586: push(@{$codetitles},&str2array($codetitles_str));
9587: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
9588: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
9589: $ok_response = 1;
9590: }
9591: }
9592: if ($ok_response) {
9593: return 'ok';
9594: } else {
9595: return $response;
9596: }
9597: }
9598:
9599: sub auto_instcode_defaults {
9600: my ($domain,$returnhash,$code_order) = @_;
9601: my @homeservers;
9602:
9603: my %servers = &get_servers($domain,'library');
9604: foreach my $tryserver (keys(%servers)) {
9605: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
9606: push(@homeservers,$tryserver);
9607: }
9608: }
9609:
9610: my $response;
9611: foreach my $server (@homeservers) {
9612: $response=&reply('autoinstcodedefaults:'.$domain,$server);
9613: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
9614:
9615: foreach my $pair (split(/\&/,$response)) {
9616: my ($name,$value)=split(/\=/,$pair);
9617: if ($name eq 'code_order') {
9618: @{$code_order} = split(/\&/,&unescape($value));
9619: } else {
9620: $returnhash->{&unescape($name)}=&unescape($value);
9621: }
9622: }
9623: return 'ok';
9624: }
9625:
9626: return $response;
9627: }
9628:
9629: sub auto_possible_instcodes {
9630: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
9631: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
9632: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
9633: return;
9634: }
9635: my (@homeservers,$uhome);
9636: if (defined(&domain($domain,'primary'))) {
9637: $uhome=&domain($domain,'primary');
9638: push(@homeservers,&domain($domain,'primary'));
9639: } else {
9640: my %servers = &get_servers($domain,'library');
9641: foreach my $tryserver (keys(%servers)) {
9642: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
9643: push(@homeservers,$tryserver);
9644: }
9645: }
9646: }
9647: my $response;
9648: foreach my $server (@homeservers) {
9649: $response=&reply('autopossibleinstcodes:'.$domain,$server);
9650: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
9651: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
9652: split(':',$response);
9653: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
9654: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
9655: foreach my $item (split('&',$cat_title)) {
9656: my ($name,$value)=split('=',$item);
9657: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
9658: }
9659: foreach my $item (split('&',$cat_order)) {
9660: my ($name,$value)=split('=',$item);
9661: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
9662: }
9663: return 'ok';
9664: }
9665: return $response;
9666: }
9667:
9668: sub auto_courserequest_checks {
9669: my ($dom) = @_;
9670: my ($homeserver,%validations);
9671: if ($dom =~ /^$match_domain$/) {
9672: $homeserver = &domain($dom,'primary');
9673: }
9674: unless ($homeserver eq 'no_host') {
9675: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
9676: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9677: my @items = split(/&/,$response);
9678: foreach my $item (@items) {
9679: my ($key,$value) = split('=',$item);
9680: $validations{&unescape($key)} = &thaw_unescape($value);
9681: }
9682: }
9683: }
9684: return %validations;
9685: }
9686:
9687: sub auto_courserequest_validation {
9688: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$custominfo) = @_;
9689: my ($homeserver,$response);
9690: if ($dom =~ /^$match_domain$/) {
9691: $homeserver = &domain($dom,'primary');
9692: }
9693: unless ($homeserver eq 'no_host') {
9694: my $customdata;
9695: if (ref($custominfo) eq 'HASH') {
9696: $customdata = &freeze_escape($custominfo);
9697: }
9698: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
9699: ':'.&escape($crstype).':'.&escape($inststatuslist).
9700: ':'.&escape($instcode).':'.&escape($instseclist).':'.
9701: $customdata,$homeserver));
9702: }
9703: return $response;
9704: }
9705:
9706: sub auto_validate_class_sec {
9707: my ($cdom,$cnum,$owners,$inst_class) = @_;
9708: my $homeserver = &homeserver($cnum,$cdom);
9709: my $ownerlist;
9710: if (ref($owners) eq 'ARRAY') {
9711: $ownerlist = join(',',@{$owners});
9712: } else {
9713: $ownerlist = $owners;
9714: }
9715: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
9716: &escape($ownerlist).':'.$cdom,$homeserver);
9717: return $response;
9718: }
9719:
9720: sub auto_validate_instclasses {
9721: my ($cdom,$cnum,$owners,$classesref) = @_;
9722: my ($homeserver,%validations);
9723: $homeserver = &homeserver($cnum,$cdom);
9724: unless ($homeserver eq 'no_host') {
9725: my $ownerlist;
9726: if (ref($owners) eq 'ARRAY') {
9727: $ownerlist = join(',',@{$owners});
9728: } else {
9729: $ownerlist = $owners;
9730: }
9731: if (ref($classesref) eq 'HASH') {
9732: my $classes = &freeze_escape($classesref);
9733: my $response=&reply('autovalidateinstclasses:'.&escape($ownerlist).
9734: ':'.$cdom.':'.$classes,$homeserver);
9735: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9736: my @items = split(/&/,$response);
9737: foreach my $item (@items) {
9738: my ($key,$value) = split('=',$item);
9739: $validations{&unescape($key)} = &thaw_unescape($value);
9740: }
9741: }
9742: }
9743: }
9744: return %validations;
9745: }
9746:
9747: sub auto_crsreq_update {
9748: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,
9749: $code,$accessstart,$accessend,$inbound) = @_;
9750: my ($homeserver,%crsreqresponse);
9751: if ($cdom =~ /^$match_domain$/) {
9752: $homeserver = &domain($cdom,'primary');
9753: }
9754: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
9755: my $info;
9756: if (ref($inbound) eq 'HASH') {
9757: $info = &freeze_escape($inbound);
9758: }
9759: my $response=&reply('autocrsrequpdate:'.$cdom.':'.$cnum.':'.&escape($crstype).
9760: ':'.&escape($action).':'.&escape($ownername).':'.
9761: &escape($ownerdomain).':'.&escape($fullname).':'.
9762: &escape($title).':'.&escape($code).':'.
9763: &escape($accessstart).':'.&escape($accessend).':'.$info,
9764: $homeserver);
9765: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9766: my @items = split(/&/,$response);
9767: foreach my $item (@items) {
9768: my ($key,$value) = split('=',$item);
9769: $crsreqresponse{&unescape($key)} = &thaw_unescape($value);
9770: }
9771: }
9772: }
9773: return \%crsreqresponse;
9774: }
9775:
9776: sub auto_export_grades {
9777: my ($cdom,$cnum,$inforef,$gradesref) = @_;
9778: my ($homeserver,%exportresponse);
9779: if ($cdom =~ /^$match_domain$/) {
9780: $homeserver = &domain($cdom,'primary');
9781: }
9782: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
9783: my $info;
9784: if (ref($inforef) eq 'HASH') {
9785: $info = &freeze_escape($inforef);
9786: }
9787: if (ref($gradesref) eq 'HASH') {
9788: my $grades = &freeze_escape($gradesref);
9789: my $response=&reply('encrypt:autoexportgrades:'.$cdom.':'.$cnum.':'.
9790: $info.':'.$grades,$homeserver);
9791: unless ($response =~ /(con_lost|error|no_such_host|refused|unknown_command)/) {
9792: my @items = split(/&/,$response);
9793: foreach my $item (@items) {
9794: my ($key,$value) = split('=',$item);
9795: $exportresponse{&unescape($key)} = &thaw_unescape($value);
9796: }
9797: }
9798: }
9799: }
9800: return \%exportresponse;
9801: }
9802:
9803: sub check_instcode_cloning {
9804: my ($codedefaults,$code_order,$cloner,$clonefromcode,$clonetocode) = @_;
9805: unless ((ref($codedefaults) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
9806: return;
9807: }
9808: my $canclone;
9809: if (@{$code_order} > 0) {
9810: my $instcoderegexp ='^';
9811: my @clonecodes = split(/\&/,$cloner);
9812: foreach my $item (@{$code_order}) {
9813: if (grep(/^\Q$item\E=/,@clonecodes)) {
9814: foreach my $pair (@clonecodes) {
9815: my ($key,$val) = split(/\=/,$pair,2);
9816: $val = &unescape($val);
9817: if ($key eq $item) {
9818: $instcoderegexp .= '('.$val.')';
9819: last;
9820: }
9821: }
9822: } else {
9823: $instcoderegexp .= $codedefaults->{$item};
9824: }
9825: }
9826: $instcoderegexp .= '$';
9827: my (@from,@to);
9828: eval {
9829: (@from) = ($clonefromcode =~ /$instcoderegexp/);
9830: (@to) = ($clonetocode =~ /$instcoderegexp/);
9831: };
9832: if ((@from > 0) && (@to > 0)) {
9833: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
9834: if (!@diffs) {
9835: $canclone = 1;
9836: }
9837: }
9838: }
9839: return $canclone;
9840: }
9841:
9842: sub default_instcode_cloning {
9843: my ($clonedom,$domdefclone,$clonefromcode,$clonetocode,$codedefaultsref,$codeorderref) = @_;
9844: my (%codedefaults,@code_order,$canclone);
9845: if ((ref($codedefaultsref) eq 'HASH') && (ref($codeorderref) eq 'ARRAY')) {
9846: %codedefaults = %{$codedefaultsref};
9847: @code_order = @{$codeorderref};
9848: } elsif ($clonedom) {
9849: &auto_instcode_defaults($clonedom,\%codedefaults,\@code_order);
9850: }
9851: if (($domdefclone) && (@code_order)) {
9852: my @clonecodes = split(/\+/,$domdefclone);
9853: my $instcoderegexp ='^';
9854: foreach my $item (@code_order) {
9855: if (grep(/^\Q$item\E$/,@clonecodes)) {
9856: $instcoderegexp .= '('.$codedefaults{$item}.')';
9857: } else {
9858: $instcoderegexp .= $codedefaults{$item};
9859: }
9860: }
9861: $instcoderegexp .= '$';
9862: my (@from,@to);
9863: eval {
9864: (@from) = ($clonefromcode =~ /$instcoderegexp/);
9865: (@to) = ($clonetocode =~ /$instcoderegexp/);
9866: };
9867: if ((@from > 0) && (@to > 0)) {
9868: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
9869: if (!@diffs) {
9870: $canclone = 1;
9871: }
9872: }
9873: }
9874: return $canclone;
9875: }
9876:
9877: # ------------------------------------------------------- Course Group routines
9878:
9879: sub get_coursegroups {
9880: my ($cdom,$cnum,$group,$namespace) = @_;
9881: return(&dump($namespace,$cdom,$cnum,$group));
9882: }
9883:
9884: sub modify_coursegroup {
9885: my ($cdom,$cnum,$groupsettings) = @_;
9886: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
9887: }
9888:
9889: sub toggle_coursegroup_status {
9890: my ($cdom,$cnum,$group,$action) = @_;
9891: my ($from_namespace,$to_namespace);
9892: if ($action eq 'delete') {
9893: $from_namespace = 'coursegroups';
9894: $to_namespace = 'deleted_groups';
9895: } else {
9896: $from_namespace = 'deleted_groups';
9897: $to_namespace = 'coursegroups';
9898: }
9899: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
9900: if (my $tmp = &error(%curr_group)) {
9901: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
9902: return ('read error',$tmp);
9903: } else {
9904: my %savedsettings = %curr_group;
9905: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
9906: my $deloutcome;
9907: if ($result eq 'ok') {
9908: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
9909: } else {
9910: return ('write error',$result);
9911: }
9912: if ($deloutcome eq 'ok') {
9913: return 'ok';
9914: } else {
9915: return ('delete error',$deloutcome);
9916: }
9917: }
9918: }
9919:
9920: sub modify_group_roles {
9921: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
9922: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
9923: my $role = 'gr/'.&escape($userprivs);
9924: my ($uname,$udom) = split(/:/,$user);
9925: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
9926: if ($result eq 'ok') {
9927: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
9928: }
9929: return $result;
9930: }
9931:
9932: sub modify_coursegroup_membership {
9933: my ($cdom,$cnum,$membership) = @_;
9934: my $result = &put('groupmembership',$membership,$cdom,$cnum);
9935: return $result;
9936: }
9937:
9938: sub get_active_groups {
9939: my ($udom,$uname,$cdom,$cnum) = @_;
9940: my $now = time;
9941: my %groups = ();
9942: foreach my $key (keys(%env)) {
9943: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
9944: my ($start,$end) = split(/\./,$env{$key});
9945: if (($end!=0) && ($end<$now)) { next; }
9946: if (($start!=0) && ($start>$now)) { next; }
9947: if ($1 eq $cdom && $2 eq $cnum) {
9948: $groups{$3} = $env{$key} ;
9949: }
9950: }
9951: }
9952: return %groups;
9953: }
9954:
9955: sub get_group_membership {
9956: my ($cdom,$cnum,$group) = @_;
9957: return(&dump('groupmembership',$cdom,$cnum,$group));
9958: }
9959:
9960: sub get_users_groups {
9961: my ($udom,$uname,$courseid) = @_;
9962: my @usersgroups;
9963: my $cachetime=1800;
9964:
9965: my $hashid="$udom:$uname:$courseid";
9966: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
9967: if (defined($cached)) {
9968: @usersgroups = split(/:/,$grouplist);
9969: } else {
9970: $grouplist = '';
9971: my $courseurl = &courseid_to_courseurl($courseid);
9972: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
9973: my $access_end = $env{'course.'.$courseid.
9974: '.default_enrollment_end_date'};
9975: my $now = time;
9976: foreach my $key (keys(%roleshash)) {
9977: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
9978: my $group = $1;
9979: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
9980: my $start = $2;
9981: my $end = $1;
9982: if ($start == -1) { next; } # deleted from group
9983: if (($start!=0) && ($start>$now)) { next; }
9984: if (($end!=0) && ($end<$now)) {
9985: if ($access_end && $access_end < $now) {
9986: if ($access_end - $end < 86400) {
9987: push(@usersgroups,$group);
9988: }
9989: }
9990: next;
9991: }
9992: push(@usersgroups,$group);
9993: }
9994: }
9995: }
9996: @usersgroups = &sort_course_groups($courseid,@usersgroups);
9997: $grouplist = join(':',@usersgroups);
9998: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
9999: }
10000: return @usersgroups;
10001: }
10002:
10003: sub devalidate_getgroups_cache {
10004: my ($udom,$uname,$cdom,$cnum)=@_;
10005: my $courseid = $cdom.'_'.$cnum;
10006:
10007: my $hashid="$udom:$uname:$courseid";
10008: &devalidate_cache_new('getgroups',$hashid);
10009: }
10010:
10011: # ------------------------------------------------------------------ Plain Text
10012:
10013: sub plaintext {
10014: my ($short,$type,$cid,$forcedefault) = @_;
10015: if ($short =~ m{^cr/}) {
10016: return (split('/',$short))[-1];
10017: }
10018: if (!defined($cid)) {
10019: $cid = $env{'request.course.id'};
10020: }
10021: my %rolenames = (
10022: Course => 'std',
10023: Community => 'alt1',
10024: Placement => 'std',
10025: );
10026: if ($cid ne '') {
10027: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
10028: unless ($forcedefault) {
10029: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
10030: &Apache::lonlocal::mt_escape(\$roletext);
10031: return &Apache::lonlocal::mt($roletext);
10032: }
10033: }
10034: }
10035: if ((defined($type)) && (defined($rolenames{$type})) &&
10036: (defined($rolenames{$type})) &&
10037: (defined($prp{$short}{$rolenames{$type}}))) {
10038: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
10039: } elsif ($cid ne '') {
10040: my $crstype = $env{'course.'.$cid.'.type'};
10041: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
10042: (defined($prp{$short}{$rolenames{$crstype}}))) {
10043: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
10044: }
10045: }
10046: return &Apache::lonlocal::mt($prp{$short}{'std'});
10047: }
10048:
10049: # ----------------------------------------------------------------- Assign Role
10050:
10051: sub assignrole {
10052: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
10053: $context)=@_;
10054: my $mrole;
10055: if ($role =~ /^cr\//) {
10056: my $cwosec=$url;
10057: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
10058: unless (&allowed('ccr',$cwosec)) {
10059: my $refused = 1;
10060: if ($context eq 'requestcourses') {
10061: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
10062: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
10063: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
10064: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
10065: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
10066: if ($crsenv{'internal.courseowner'} eq
10067: $env{'user.name'}.':'.$env{'user.domain'}) {
10068: $refused = '';
10069: }
10070: }
10071: }
10072: }
10073: }
10074: if ($refused) {
10075: &logthis('Refused custom assignrole: '.
10076: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
10077: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
10078: return 'refused';
10079: }
10080: }
10081: $mrole='cr';
10082: } elsif ($role =~ /^gr\//) {
10083: my $cwogrp=$url;
10084: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
10085: unless (&allowed('mdg',$cwogrp)) {
10086: &logthis('Refused group assignrole: '.
10087: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
10088: $env{'user.name'}.' at '.$env{'user.domain'});
10089: return 'refused';
10090: }
10091: $mrole='gr';
10092: } else {
10093: my $cwosec=$url;
10094: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
10095: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
10096: my $refused;
10097: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
10098: if (!(&allowed('c'.$role,$url))) {
10099: $refused = 1;
10100: }
10101: } else {
10102: $refused = 1;
10103: }
10104: if ($refused) {
10105: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
10106: if (!$selfenroll && (($context eq 'course') || ($context eq 'ltienroll' && $env{'request.lti.login'}))) {
10107: my %crsenv;
10108: if ($role eq 'cc' || $role eq 'co') {
10109: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
10110: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
10111: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
10112: if ($crsenv{'internal.courseowner'} eq
10113: $env{'user.name'}.':'.$env{'user.domain'}) {
10114: $refused = '';
10115: }
10116: }
10117: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
10118: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
10119: if ($crsenv{'internal.courseowner'} eq
10120: $env{'user.name'}.':'.$env{'user.domain'}) {
10121: $refused = '';
10122: }
10123: }
10124: }
10125: }
10126: } elsif (($selfenroll == 1) && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
10127: if ($role eq 'st') {
10128: $refused = '';
10129: } elsif (($context eq 'ltienroll') && ($env{'request.lti.login'})) {
10130: $refused = '';
10131: }
10132: } elsif ($context eq 'requestcourses') {
10133: my @possroles = ('st','ta','ep','in','cc','co');
10134: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
10135: my $wrongcc;
10136: if ($cnum =~ /^$match_community$/) {
10137: $wrongcc = 1 if ($role eq 'cc');
10138: } else {
10139: $wrongcc = 1 if ($role eq 'co');
10140: }
10141: unless ($wrongcc) {
10142: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
10143: if ($crsenv{'internal.courseowner'} eq
10144: $env{'user.name'}.':'.$env{'user.domain'}) {
10145: $refused = '';
10146: }
10147: }
10148: }
10149: } elsif ($context eq 'requestauthor') {
10150: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
10151: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
10152: if ($env{'environment.requestauthor'} eq 'automatic') {
10153: $refused = '';
10154: } else {
10155: my %domdefaults = &get_domain_defaults($udom);
10156: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
10157: my $checkbystatus;
10158: if ($env{'user.adv'}) {
10159: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
10160: if ($disposition eq 'automatic') {
10161: $refused = '';
10162: } elsif ($disposition eq '') {
10163: $checkbystatus = 1;
10164: }
10165: } else {
10166: $checkbystatus = 1;
10167: }
10168: if ($checkbystatus) {
10169: if ($env{'environment.inststatus'}) {
10170: my @inststatuses = split(/,/,$env{'environment.inststatus'});
10171: foreach my $type (@inststatuses) {
10172: if (($type ne '') &&
10173: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
10174: $refused = '';
10175: }
10176: }
10177: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
10178: $refused = '';
10179: }
10180: }
10181: }
10182: }
10183: }
10184: }
10185: if ($refused) {
10186: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
10187: ' '.$role.' '.$end.' '.$start.' by '.
10188: $env{'user.name'}.' at '.$env{'user.domain'});
10189: return 'refused';
10190: }
10191: }
10192: } elsif ($role eq 'au') {
10193: if ($url ne '/'.$udom.'/') {
10194: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
10195: ' to assign author role for '.$uname.':'.$udom.
10196: ' in domain: '.$url.' refused (wrong domain).');
10197: return 'refused';
10198: }
10199: }
10200: $mrole=$role;
10201: }
10202: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
10203: "$udom:$uname:$url".'_'."$mrole=$role";
10204: if ($end) { $command.='_'.$end; }
10205: if ($start) {
10206: if ($end) {
10207: $command.='_'.$start;
10208: } else {
10209: $command.='_0_'.$start;
10210: }
10211: }
10212: my $origstart = $start;
10213: my $origend = $end;
10214: my $delflag;
10215: # actually delete
10216: if ($deleteflag) {
10217: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
10218: # modify command to delete the role
10219: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
10220: "$udom:$uname:$url".'_'."$mrole";
10221: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
10222: # set start and finish to negative values for userrolelog
10223: $start=-1;
10224: $end=-1;
10225: $delflag = 1;
10226: }
10227: }
10228: # send command
10229: my $answer=&reply($command,&homeserver($uname,$udom));
10230: # log new user role if status is ok
10231: if ($answer eq 'ok') {
10232: &userrolelog($role,$uname,$udom,$url,$start,$end);
10233: if (($role eq 'cc') || ($role eq 'in') ||
10234: ($role eq 'ep') || ($role eq 'ad') ||
10235: ($role eq 'ta') || ($role eq 'st') ||
10236: ($role=~/^cr/) || ($role eq 'gr') ||
10237: ($role eq 'co')) {
10238: # for course roles, perform group memberships changes triggered by role change.
10239: unless ($role =~ /^gr/) {
10240: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
10241: $origstart,$selfenroll,$context);
10242: }
10243: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
10244: $selfenroll,$context);
10245: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
10246: ($role eq 'au') || ($role eq 'dc') || ($role eq 'dh') ||
10247: ($role eq 'da')) {
10248: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
10249: $context);
10250: } elsif (($role eq 'ca') || ($role eq 'aa')) {
10251: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
10252: $context);
10253: }
10254: if ($role eq 'cc') {
10255: &autoupdate_coowners($url,$end,$start,$uname,$udom);
10256: }
10257: }
10258: return $answer;
10259: }
10260:
10261: sub autoupdate_coowners {
10262: my ($url,$end,$start,$uname,$udom) = @_;
10263: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
10264: if (($cdom ne '') && ($cnum ne '')) {
10265: my $now = time;
10266: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
10267: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
10268: my %coursehash = &coursedescription($cdom.'_'.$cnum);
10269: my $instcode = $coursehash{'internal.coursecode'};
10270: my $xlists = $coursehash{'internal.crosslistings'};
10271: if ($instcode ne '') {
10272: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
10273: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
10274: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
10275: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
10276: unless ($result eq 'valid') {
10277: if ($xlists ne '') {
10278: foreach my $xlist (split(',',$xlists)) {
10279: my ($inst_crosslist,$lcsec) = split(':',$xlist);
10280: $result =
10281: &Apache::lonnet::auto_validate_inst_crosslist($cnum,$cdom,$instcode,
10282: $inst_crosslist,$uname.':'.$udom);
10283: last if ($result eq 'valid');
10284: }
10285: }
10286: }
10287: }
10288: if ($result eq 'valid') {
10289: if ($coursehash{'internal.co-owners'}) {
10290: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
10291: push(@newcoowners,$coowner);
10292: }
10293: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
10294: push(@newcoowners,$uname.':'.$udom);
10295: }
10296: @newcoowners = sort(@newcoowners);
10297: } else {
10298: push(@newcoowners,$uname.':'.$udom);
10299: }
10300: } elsif ($coursehash{'internal.co-owners'}) {
10301: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
10302: unless ($coowner eq $uname.':'.$udom) {
10303: push(@newcoowners,$coowner);
10304: }
10305: }
10306: unless (@newcoowners > 0) {
10307: $delcoowners = 1;
10308: $coowners = '';
10309: }
10310: }
10311: if (@newcoowners || $delcoowners) {
10312: &store_coowners($cdom,$cnum,$coursehash{'home'},
10313: $delcoowners,@newcoowners);
10314: }
10315: }
10316: }
10317: }
10318: }
10319: }
10320: }
10321:
10322: sub store_coowners {
10323: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
10324: my $cid = $cdom.'_'.$cnum;
10325: my ($coowners,$delresult,$putresult);
10326: if (@newcoowners) {
10327: $coowners = join(',',@newcoowners);
10328: my %coownershash = (
10329: 'internal.co-owners' => $coowners,
10330: );
10331: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
10332: if ($putresult eq 'ok') {
10333: if ($env{'course.'.$cid.'.num'} eq $cnum) {
10334: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
10335: }
10336: }
10337: }
10338: if ($delcoowners) {
10339: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
10340: if ($delresult eq 'ok') {
10341: if ($env{'course.'.$cid.'.internal.co-owners'}) {
10342: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
10343: }
10344: }
10345: }
10346: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
10347: my %crsinfo =
10348: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
10349: if (ref($crsinfo{$cid}) eq 'HASH') {
10350: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
10351: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
10352: }
10353: }
10354: }
10355:
10356: # -------------------------------------------------- Modify user authentication
10357: # Overrides without validation
10358:
10359: sub modifyuserauth {
10360: my ($udom,$uname,$umode,$upass)=@_;
10361: my $uhome=&homeserver($uname,$udom);
10362: my $allowed;
10363: if (&allowed('mau',$udom)) {
10364: $allowed = 1;
10365: } elsif (($umode eq 'internal') && ($udom eq $env{'user.domain'}) &&
10366: ($env{'request.course.id'}) && (&allowed('mip',$env{'request.course.id'})) &&
10367: (!$env{'course.'.$env{'request.course.id'}.'.internal.nopasswdchg'})) {
10368: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
10369: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
10370: if (($cdom ne '') && ($cnum ne '')) {
10371: my $is_owner = &is_course_owner($cdom,$cnum);
10372: if ($is_owner) {
10373: $allowed = 1;
10374: }
10375: }
10376: }
10377: unless ($allowed) { return 'refused'; }
10378: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
10379: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
10380: ' in domain '.$env{'request.role.domain'});
10381: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
10382: &escape($upass),$uhome);
10383: my $ip = &get_requestor_ip();
10384: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
10385: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
10386: '(Remote '.$ip.'): '.$reply);
10387: &log($udom,,$uname,$uhome,
10388: 'Authentication changed by '.$env{'user.domain'}.', '.
10389: $env{'user.name'}.', '.$umode.
10390: '(Remote '.$ip.'): '.$reply);
10391: unless ($reply eq 'ok') {
10392: &logthis('Authentication mode error: '.$reply);
10393: return 'error: '.$reply;
10394: }
10395: return 'ok';
10396: }
10397:
10398: # --------------------------------------------------------------- Modify a user
10399:
10400: sub modifyuser {
10401: my ($udom, $uname, $uid,
10402: $umode, $upass, $first,
10403: $middle, $last, $gene,
10404: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
10405: $udom= &LONCAPA::clean_domain($udom);
10406: $uname=&LONCAPA::clean_username($uname);
10407: my $showcandelete = 'none';
10408: if (ref($candelete) eq 'ARRAY') {
10409: if (@{$candelete} > 0) {
10410: $showcandelete = join(', ',@{$candelete});
10411: }
10412: }
10413: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
10414: $umode.', '.$first.', '.$middle.', '.
10415: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
10416: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
10417: ' desiredhome not specified').
10418: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
10419: ' in domain '.$env{'request.role.domain'});
10420: my $uhome=&homeserver($uname,$udom,'true');
10421: my $newuser;
10422: if ($uhome eq 'no_host') {
10423: $newuser = 1;
10424: unless (($umode && ($upass ne '')) || ($umode eq 'localauth') ||
10425: ($umode eq 'lti')) {
10426: return 'error: more information needed to create new user';
10427: }
10428: }
10429: # ----------------------------------------------------------------- Create User
10430: if (($uhome eq 'no_host') &&
10431: (($umode && $upass) || ($umode eq 'localauth') || ($umode eq 'lti'))) {
10432: my $unhome='';
10433: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
10434: $unhome = $desiredhome;
10435: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
10436: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
10437: } else { # load balancing routine for determining $unhome
10438: my $loadm=10000000;
10439: my %servers = &get_servers($udom,'library');
10440: foreach my $tryserver (keys(%servers)) {
10441: my $answer=reply('load',$tryserver);
10442: if (($answer=~/\d+/) && ($answer<$loadm)) {
10443: $loadm=$answer;
10444: $unhome=$tryserver;
10445: }
10446: }
10447: }
10448: if (($unhome eq '') || ($unhome eq 'no_host')) {
10449: return 'error: unable to find a home server for '.$uname.
10450: ' in domain '.$udom;
10451: }
10452: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
10453: &escape($upass),$unhome);
10454: unless ($reply eq 'ok') {
10455: return 'error: '.$reply;
10456: }
10457: $uhome=&homeserver($uname,$udom,'true');
10458: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
10459: return 'error: unable verify users home machine.';
10460: }
10461: } # End of creation of new user
10462: # ---------------------------------------------------------------------- Add ID
10463: if ($uid) {
10464: $uid=~tr/A-Z/a-z/;
10465: my %uidhash=&idrget($udom,$uname);
10466: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
10467: && (!$forceid)) {
10468: unless ($uid eq $uidhash{$uname}) {
10469: return 'error: user id "'.$uid.'" does not match '.
10470: 'current user id "'.$uidhash{$uname}.'".';
10471: }
10472: } else {
10473: &idput($udom,{$uname => $uid},$uhome,'ids');
10474: }
10475: }
10476: # -------------------------------------------------------------- Add names, etc
10477: my @tmp=&get('environment',
10478: ['firstname','middlename','lastname','generation','id',
10479: 'permanentemail','inststatus'],
10480: $udom,$uname);
10481: my (%names,%oldnames);
10482: if ($tmp[0] =~ m/^error:.*/) {
10483: %names=();
10484: } else {
10485: %names = @tmp;
10486: %oldnames = %names;
10487: }
10488: #
10489: # If name, email and/or uid are blank (e.g., because an uploaded file
10490: # of users did not contain them), do not overwrite existing values
10491: # unless field is in $candelete array ref.
10492: #
10493:
10494: my @fields = ('firstname','middlename','lastname','generation',
10495: 'permanentemail','id');
10496: my %newvalues;
10497: if (ref($candelete) eq 'ARRAY') {
10498: foreach my $field (@fields) {
10499: if (grep(/^\Q$field\E$/,@{$candelete})) {
10500: if ($field eq 'firstname') {
10501: $names{$field} = $first;
10502: } elsif ($field eq 'middlename') {
10503: $names{$field} = $middle;
10504: } elsif ($field eq 'lastname') {
10505: $names{$field} = $last;
10506: } elsif ($field eq 'generation') {
10507: $names{$field} = $gene;
10508: } elsif ($field eq 'permanentemail') {
10509: $names{$field} = $email;
10510: } elsif ($field eq 'id') {
10511: $names{$field} = $uid;
10512: }
10513: }
10514: }
10515: }
10516: if ($first) { $names{'firstname'} = $first; }
10517: if (defined($middle)) { $names{'middlename'} = $middle; }
10518: if ($last) { $names{'lastname'} = $last; }
10519: if (defined($gene)) { $names{'generation'} = $gene; }
10520: if ($email) {
10521: $email=~s/[^\w\@\.\-\,]//gs;
10522: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
10523: }
10524: if ($uid) { $names{'id'} = $uid; }
10525: if (defined($inststatus)) {
10526: $names{'inststatus'} = '';
10527: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
10528: if (ref($usertypes) eq 'HASH') {
10529: my @okstatuses;
10530: foreach my $item (split(/:/,$inststatus)) {
10531: if (defined($usertypes->{$item})) {
10532: push(@okstatuses,$item);
10533: }
10534: }
10535: if (@okstatuses) {
10536: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
10537: }
10538: }
10539: }
10540: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
10541: $umode.', '.$first.', '.$middle.', '.
10542: $last.', '.$gene.', '.$email.', '.$inststatus;
10543: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
10544: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
10545: } else {
10546: $logmsg .= ' during self creation';
10547: }
10548: my $changed;
10549: if ($newuser) {
10550: $changed = 1;
10551: } else {
10552: foreach my $field (@fields) {
10553: if ($names{$field} ne $oldnames{$field}) {
10554: $changed = 1;
10555: last;
10556: }
10557: }
10558: }
10559: unless ($changed) {
10560: $logmsg = 'No changes in user information needed for: '.$logmsg;
10561: &logthis($logmsg);
10562: return 'ok';
10563: }
10564: my $reply = &put('environment', \%names, $udom,$uname);
10565: if ($reply ne 'ok') {
10566: return 'error: '.$reply;
10567: }
10568: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
10569: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
10570: }
10571: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
10572: &devalidate_cache_new('namescache',$uname.':'.$udom);
10573: $logmsg = 'Success modifying user '.$logmsg;
10574: &logthis($logmsg);
10575: return 'ok';
10576: }
10577:
10578: # -------------------------------------------------------------- Modify student
10579:
10580: sub modifystudent {
10581: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
10582: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
10583: $selfenroll,$context,$inststatus,$credits,$instsec)=@_;
10584: if (!$cid) {
10585: unless ($cid=$env{'request.course.id'}) {
10586: return 'not_in_class';
10587: }
10588: }
10589: # --------------------------------------------------------------- Make the user
10590: my $reply=&modifyuser
10591: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
10592: $desiredhome,$email,$inststatus);
10593: unless ($reply eq 'ok') { return $reply; }
10594: # This will cause &modify_student_enrollment to get the uid from the
10595: # student's environment
10596: $uid = undef if (!$forceid);
10597: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
10598: $gene,$usec,$end,$start,$type,$locktype,
10599: $cid,$selfenroll,$context,$credits,$instsec);
10600: return $reply;
10601: }
10602:
10603: sub modify_student_enrollment {
10604: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
10605: $locktype,$cid,$selfenroll,$context,$credits,$instsec) = @_;
10606: my ($cdom,$cnum,$chome);
10607: if (!$cid) {
10608: unless ($cid=$env{'request.course.id'}) {
10609: return 'not_in_class';
10610: }
10611: $cdom=$env{'course.'.$cid.'.domain'};
10612: $cnum=$env{'course.'.$cid.'.num'};
10613: } else {
10614: ($cdom,$cnum)=split(/_/,$cid);
10615: }
10616: $chome=$env{'course.'.$cid.'.home'};
10617: if (!$chome) {
10618: $chome=&homeserver($cnum,$cdom);
10619: }
10620: if (!$chome) { return 'unknown_course'; }
10621: # Make sure the user exists
10622: my $uhome=&homeserver($uname,$udom);
10623: if (($uhome eq '') || ($uhome eq 'no_host')) {
10624: return 'error: no such user';
10625: }
10626: # Get student data if we were not given enough information
10627: if (!defined($first) || $first eq '' ||
10628: !defined($last) || $last eq '' ||
10629: !defined($uid) || $uid eq '' ||
10630: !defined($middle) || $middle eq '' ||
10631: !defined($gene) || $gene eq '') {
10632: # They did not supply us with enough data to enroll the student, so
10633: # we need to pick up more information.
10634: my %tmp = &get('environment',
10635: ['firstname','middlename','lastname', 'generation','id']
10636: ,$udom,$uname);
10637:
10638: #foreach my $key (keys(%tmp)) {
10639: # &logthis("key $key = ".$tmp{$key});
10640: #}
10641: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
10642: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
10643: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
10644: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
10645: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
10646: }
10647: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
10648: my $user = "$uname:$udom";
10649: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
10650: my $reply=cput('classlist',
10651: {$user =>
10652: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits,$instsec) },
10653: $cdom,$cnum);
10654: if (($reply eq 'ok') || ($reply eq 'delayed')) {
10655: &devalidate_getsection_cache($udom,$uname,$cid);
10656: } else {
10657: return 'error: '.$reply;
10658: }
10659: # Add student role to user
10660: my $uurl='/'.$cid;
10661: $uurl=~s/\_/\//g;
10662: if ($usec) {
10663: $uurl.='/'.$usec;
10664: }
10665: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
10666: $selfenroll,$context);
10667: if ($result ne 'ok') {
10668: if ($old_entry{$user} ne '') {
10669: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
10670: } else {
10671: $reply = &del('classlist',[$user],$cdom,$cnum);
10672: }
10673: }
10674: return $result;
10675: }
10676:
10677: sub format_name {
10678: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
10679: my $name;
10680: if ($first ne 'lastname') {
10681: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
10682: } else {
10683: if ($lastname=~/\S/) {
10684: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
10685: $name=~s/\s+,/,/;
10686: } else {
10687: $name.= $firstname.' '.$middlename.' '.$generation;
10688: }
10689: }
10690: $name=~s/^\s+//;
10691: $name=~s/\s+$//;
10692: $name=~s/\s+/ /g;
10693: return $name;
10694: }
10695:
10696: # ------------------------------------------------- Write to course preferences
10697:
10698: sub writecoursepref {
10699: my ($courseid,%prefs)=@_;
10700: $courseid=~s/^\///;
10701: $courseid=~s/\_/\//g;
10702: my ($cdomain,$cnum)=split(/\//,$courseid);
10703: my $chome=homeserver($cnum,$cdomain);
10704: if (($chome eq '') || ($chome eq 'no_host')) {
10705: return 'error: no such course';
10706: }
10707: my $cstring='';
10708: foreach my $pref (keys(%prefs)) {
10709: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
10710: }
10711: $cstring=~s/\&$//;
10712: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
10713: }
10714:
10715: # ---------------------------------------------------------- Make/modify course
10716:
10717: sub createcourse {
10718: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
10719: $course_owner,$crstype,$cnum,$context,$category,$callercontext)=@_;
10720: $url=&declutter($url);
10721: my $cid='';
10722: if ($context eq 'requestcourses') {
10723: my $can_create = 0;
10724: my ($ownername,$ownerdom) = split(':',$course_owner);
10725: if ($udom eq $ownerdom) {
10726: my $reload;
10727: if (($callercontext eq 'auto') &&
10728: ($ownerdom eq $env{'user.domain'}) && ($ownername eq $env{'user.name'})) {
10729: $reload = 'reload';
10730: }
10731: if (&usertools_access($ownername,$ownerdom,$category,$reload,
10732: $context)) {
10733: $can_create = 1;
10734: }
10735: } else {
10736: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
10737: $category);
10738: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
10739: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
10740: if (@curr > 0) {
10741: my @options = qw(approval validate autolimit);
10742: my $optregex = join('|',@options);
10743: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
10744: $can_create = 1;
10745: }
10746: }
10747: }
10748: }
10749: if ($can_create) {
10750: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
10751: unless (&allowed('ccc',$udom)) {
10752: return 'refused';
10753: }
10754: }
10755: } else {
10756: return 'refused';
10757: }
10758: } elsif (!&allowed('ccc',$udom)) {
10759: return 'refused';
10760: }
10761: # --------------------------------------------------------------- Get Unique ID
10762: my $uname;
10763: if ($cnum =~ /^$match_courseid$/) {
10764: my $chome=&homeserver($cnum,$udom,'true');
10765: if (($chome eq '') || ($chome eq 'no_host')) {
10766: $uname = $cnum;
10767: } else {
10768: $uname = &generate_coursenum($udom,$crstype);
10769: }
10770: } else {
10771: $uname = &generate_coursenum($udom,$crstype);
10772: }
10773: return $uname if ($uname =~ /^error/);
10774: # -------------------------------------------------- Check supplied server name
10775: if (!defined($course_server)) {
10776: if (defined(&domain($udom,'primary'))) {
10777: $course_server = &domain($udom,'primary');
10778: } else {
10779: $course_server = $env{'user.home'};
10780: }
10781: }
10782: my %host_servers =
10783: &Apache::lonnet::get_servers($udom,'library');
10784: unless ($host_servers{$course_server}) {
10785: return 'error: invalid home server for course: '.$course_server;
10786: }
10787: # ------------------------------------------------------------- Make the course
10788: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
10789: $course_server);
10790: unless ($reply eq 'ok') { return 'error: '.$reply; }
10791: my $uhome=&homeserver($uname,$udom,'true');
10792: if (($uhome eq '') || ($uhome eq 'no_host')) {
10793: return 'error: no such course';
10794: }
10795: # ----------------------------------------------------------------- Course made
10796: # log existence
10797: my $now = time;
10798: my $newcourse = {
10799: $udom.'_'.$uname => {
10800: description => $description,
10801: inst_code => $inst_code,
10802: owner => $course_owner,
10803: type => $crstype,
10804: creator => $env{'user.name'}.':'.
10805: $env{'user.domain'},
10806: created => $now,
10807: context => $context,
10808: },
10809: };
10810: &courseidput($udom,$newcourse,$uhome,'notime');
10811: # set toplevel url
10812: my $topurl=$url;
10813: unless ($nonstandard) {
10814: # ------------------------------------------ For standard courses, make top url
10815: my $mapurl=&clutter($url);
10816: if ($mapurl eq '/res/') { $mapurl=''; }
10817: $env{'form.initmap'}=(<<ENDINITMAP);
10818: <map>
10819: <resource id="1" type="start"></resource>
10820: <resource id="2" src="$mapurl"></resource>
10821: <resource id="3" type="finish"></resource>
10822: <link index="1" from="1" to="2"></link>
10823: <link index="2" from="2" to="3"></link>
10824: </map>
10825: ENDINITMAP
10826: $topurl=&declutter(
10827: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
10828: );
10829: }
10830: # ----------------------------------------------------------- Write preferences
10831: &writecoursepref($udom.'_'.$uname,
10832: ('description' => $description,
10833: 'url' => $topurl,
10834: 'internal.creator' => $env{'user.name'}.':'.
10835: $env{'user.domain'},
10836: 'internal.created' => $now,
10837: 'internal.creationcontext' => $context)
10838: );
10839: return '/'.$udom.'/'.$uname;
10840: }
10841:
10842: # ------------------------------------------------------------------- Create ID
10843: sub generate_coursenum {
10844: my ($udom,$crstype) = @_;
10845: my $domdesc = &domain($udom);
10846: return 'error: invalid domain' if ($domdesc eq '');
10847: my $first;
10848: if ($crstype eq 'Community') {
10849: $first = '0';
10850: } else {
10851: $first = int(1+rand(9));
10852: }
10853: my $uname=$first.
10854: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
10855: substr($$.time,0,5).unpack("H8",pack("I32",time)).
10856: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
10857: # ----------------------------------------------- Make sure that does not exist
10858: my $uhome=&homeserver($uname,$udom,'true');
10859: unless (($uhome eq '') || ($uhome eq 'no_host')) {
10860: if ($crstype eq 'Community') {
10861: $first = '0';
10862: } else {
10863: $first = int(1+rand(9));
10864: }
10865: $uname=$first.
10866: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
10867: substr($$.time,0,5).unpack("H8",pack("I32",time)).
10868: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
10869: $uhome=&homeserver($uname,$udom,'true');
10870: unless (($uhome eq '') || ($uhome eq 'no_host')) {
10871: return 'error: unable to generate unique course-ID';
10872: }
10873: }
10874: return $uname;
10875: }
10876:
10877: sub is_course {
10878: my ($cdom, $cnum) = scalar(@_) == 1 ?
10879: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
10880:
10881: return unless (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/));
10882: my $uhome=&homeserver($cnum,$cdom);
10883: my $iscourse;
10884: if (grep { $_ eq $uhome } current_machine_ids()) {
10885: $iscourse = &LONCAPA::Lond::is_course($cdom,$cnum);
10886: } else {
10887: my $hashid = $cdom.':'.$cnum;
10888: ($iscourse,my $cached) = &is_cached_new('iscourse',$hashid);
10889: unless (defined($cached)) {
10890: my %courses = &courseiddump($cdom, '.', 1, '.', '.',
10891: $cnum,undef,undef,'.');
10892: $iscourse = 0;
10893: if (exists($courses{$cdom.'_'.$cnum})) {
10894: $iscourse = 1;
10895: }
10896: &do_cache_new('iscourse',$hashid,$iscourse,3600);
10897: }
10898: }
10899: return unless ($iscourse);
10900: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
10901: }
10902:
10903: sub store_userdata {
10904: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
10905: my $result;
10906: if ($datakey ne '') {
10907: if (ref($storehash) eq 'HASH') {
10908: if ($udom eq '' || $uname eq '') {
10909: $udom = $env{'user.domain'};
10910: $uname = $env{'user.name'};
10911: }
10912: my $uhome=&homeserver($uname,$udom);
10913: if (($uhome eq '') || ($uhome eq 'no_host')) {
10914: $result = 'error: no_host';
10915: } else {
10916: $storehash->{'ip'} = &get_requestor_ip();
10917: $storehash->{'host'} = $perlvar{'lonHostID'};
10918:
10919: my $namevalue='';
10920: foreach my $key (keys(%{$storehash})) {
10921: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
10922: }
10923: $namevalue=~s/\&$//;
10924: unless ($namespace eq 'courserequests') {
10925: $datakey = &escape($datakey);
10926: }
10927: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
10928: $namevalue,$uhome);
10929: }
10930: } else {
10931: $result = 'error: data to store was not a hash reference';
10932: }
10933: } else {
10934: $result= 'error: invalid requestkey';
10935: }
10936: return $result;
10937: }
10938:
10939: # ---------------------------------------------------------- Assign Custom Role
10940:
10941: sub assigncustomrole {
10942: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
10943: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
10944: $end,$start,$deleteflag,$selfenroll,$context);
10945: }
10946:
10947: # ----------------------------------------------------------------- Revoke Role
10948:
10949: sub revokerole {
10950: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
10951: my $now=time;
10952: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
10953: }
10954:
10955: # ---------------------------------------------------------- Revoke Custom Role
10956:
10957: sub revokecustomrole {
10958: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
10959: my $now=time;
10960: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
10961: $deleteflag,$selfenroll,$context);
10962: }
10963:
10964: # ------------------------------------------------------------ Disk usage
10965: sub diskusage {
10966: my ($udom,$uname,$directorypath,$getpropath)=@_;
10967: $directorypath =~ s/\/$//;
10968: my $listing=&reply('du2:'.&escape($directorypath).':'
10969: .&escape($getpropath).':'.&escape($uname).':'
10970: .&escape($udom),homeserver($uname,$udom));
10971: if ($listing eq 'unknown_cmd') {
10972: if ($getpropath) {
10973: $directorypath = &propath($udom,$uname).'/'.$directorypath;
10974: }
10975: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
10976: }
10977: return $listing;
10978: }
10979:
10980: sub is_locked {
10981: my ($file_name, $domain, $user, $which) = @_;
10982: my @check;
10983: my $is_locked;
10984: push (@check,$file_name);
10985: my %locked = &get('file_permissions',\@check,
10986: $env{'user.domain'},$env{'user.name'});
10987: my ($tmp)=keys(%locked);
10988: if ($tmp=~/^error:/) { undef(%locked); }
10989:
10990: if (ref($locked{$file_name}) eq 'ARRAY') {
10991: $is_locked = 'false';
10992: foreach my $entry (@{$locked{$file_name}}) {
10993: if (ref($entry) eq 'ARRAY') {
10994: $is_locked = 'true';
10995: if (ref($which) eq 'ARRAY') {
10996: push(@{$which},$entry);
10997: } else {
10998: last;
10999: }
11000: }
11001: }
11002: } else {
11003: $is_locked = 'false';
11004: }
11005: return $is_locked;
11006: }
11007:
11008: sub declutter_portfile {
11009: my ($file) = @_;
11010: $file =~ s{^(/portfolio/|portfolio/)}{/};
11011: return $file;
11012: }
11013:
11014: # ------------------------------------------------------------- Mark as Read Only
11015:
11016: sub mark_as_readonly {
11017: my ($domain,$user,$files,$what) = @_;
11018: my %current_permissions = &dump('file_permissions',$domain,$user);
11019: my ($tmp)=keys(%current_permissions);
11020: if ($tmp=~/^error:/) { undef(%current_permissions); }
11021: foreach my $file (@{$files}) {
11022: $file = &declutter_portfile($file);
11023: push(@{$current_permissions{$file}},$what);
11024: }
11025: &put('file_permissions',\%current_permissions,$domain,$user);
11026: return;
11027: }
11028:
11029: # ------------------------------------------------------------Save Selected Files
11030:
11031: sub save_selected_files {
11032: my ($user, $path, @files) = @_;
11033: my $filename = $user."savedfiles";
11034: my @other_files = &files_not_in_path($user, $path);
11035: open (OUT,'>',LONCAPA::tempdir().$filename);
11036: foreach my $file (@files) {
11037: print (OUT $env{'form.currentpath'}.$file."\n");
11038: }
11039: foreach my $file (@other_files) {
11040: print (OUT $file."\n");
11041: }
11042: close (OUT);
11043: return 'ok';
11044: }
11045:
11046: sub clear_selected_files {
11047: my ($user) = @_;
11048: my $filename = $user."savedfiles";
11049: open (OUT,'>',LONCAPA::tempdir().$filename);
11050: print (OUT undef);
11051: close (OUT);
11052: return ("ok");
11053: }
11054:
11055: sub files_in_path {
11056: my ($user, $path) = @_;
11057: my $filename = $user."savedfiles";
11058: my %return_files;
11059: open (IN,'<',LONCAPA::tempdir().$filename);
11060: while (my $line_in = <IN>) {
11061: chomp ($line_in);
11062: my @paths_and_file = split (m!/!, $line_in);
11063: my $file_part = pop (@paths_and_file);
11064: my $path_part = join ('/', @paths_and_file);
11065: $path_part.='/';
11066: my $path_and_file = $path_part.$file_part;
11067: if ($path_part eq $path) {
11068: $return_files{$file_part}= 'selected';
11069: }
11070: }
11071: close (IN);
11072: return (\%return_files);
11073: }
11074:
11075: # called in portfolio select mode, to show files selected NOT in current directory
11076: sub files_not_in_path {
11077: my ($user, $path) = @_;
11078: my $filename = $user."savedfiles";
11079: my @return_files;
11080: my $path_part;
11081: open(IN, '<',LONCAPA::tempdir().$filename);
11082: while (my $line = <IN>) {
11083: #ok, I know it's clunky, but I want it to work
11084: my @paths_and_file = split(m|/|, $line);
11085: my $file_part = pop(@paths_and_file);
11086: chomp($file_part);
11087: my $path_part = join('/', @paths_and_file);
11088: $path_part .= '/';
11089: my $path_and_file = $path_part.$file_part;
11090: if ($path_part ne $path) {
11091: push(@return_files, ($path_and_file));
11092: }
11093: }
11094: close(OUT);
11095: return (@return_files);
11096: }
11097:
11098: #------------------------------Submitted/Handedback Portfolio Files Versioning
11099:
11100: sub portfiles_versioning {
11101: my ($symb,$domain,$stu_name,$portfiles,$versioned_portfiles) = @_;
11102: my $portfolio_root = '/userfiles/portfolio';
11103: return unless ((ref($portfiles) eq 'ARRAY') && (ref($versioned_portfiles) eq 'ARRAY'));
11104: foreach my $file (@{$portfiles}) {
11105: &unmark_as_readonly($domain,$stu_name,[$symb,$env{'request.course.id'}],$file);
11106: my ($directory,$answer_file) =($file =~ /^(.*?)([^\/]*)$/);
11107: my ($answer_name,$answer_ver,$answer_ext) = &file_name_version_ext($answer_file);
11108: my $getpropath = 1;
11109: my ($dir_list,$listerror) = &dirlist($portfolio_root.$directory,$domain,
11110: $stu_name,$getpropath);
11111: my $version = &get_next_version($answer_name,$answer_ext,$dir_list);
11112: my $new_answer =
11113: &version_selected_portfile($domain,$stu_name,$directory,$answer_file,$version);
11114: if ($new_answer ne 'problem getting file') {
11115: push(@{$versioned_portfiles}, $directory.$new_answer);
11116: &mark_as_readonly($domain,$stu_name,[$directory.$new_answer],
11117: [$symb,$env{'request.course.id'},'graded']);
11118: }
11119: }
11120: }
11121:
11122: sub get_next_version {
11123: my ($answer_name, $answer_ext, $dir_list) = @_;
11124: my $version;
11125: if (ref($dir_list) eq 'ARRAY') {
11126: foreach my $row (@{$dir_list}) {
11127: my ($file) = split(/\&/,$row,2);
11128: my ($file_name,$file_version,$file_ext) =
11129: &file_name_version_ext($file);
11130: if (($file_name eq $answer_name) &&
11131: ($file_ext eq $answer_ext)) {
11132: # gets here if filename and extension match,
11133: # regardless of version
11134: if ($file_version ne '') {
11135: # a versioned file is found so save it for later
11136: if ($file_version > $version) {
11137: $version = $file_version;
11138: }
11139: }
11140: }
11141: }
11142: }
11143: $version ++;
11144: return($version);
11145: }
11146:
11147: sub version_selected_portfile {
11148: my ($domain,$stu_name,$directory,$file_name,$version) = @_;
11149: my ($answer_name,$answer_ver,$answer_ext) =
11150: &file_name_version_ext($file_name);
11151: my $new_answer;
11152: $env{'form.copy'} =
11153: &getfile("/uploaded/$domain/$stu_name/portfolio$directory$file_name");
11154: if($env{'form.copy'} eq '-1') {
11155: $new_answer = 'problem getting file';
11156: } else {
11157: $new_answer = $answer_name.'.'.$version.'.'.$answer_ext;
11158: my $copy_result =
11159: &finishuserfileupload($stu_name,$domain,'copy',
11160: '/portfolio'.$directory.$new_answer);
11161: }
11162: undef($env{'form.copy'});
11163: return ($new_answer);
11164: }
11165:
11166: sub file_name_version_ext {
11167: my ($file)=@_;
11168: my @file_parts = split(/\./, $file);
11169: my ($name,$version,$ext);
11170: if (@file_parts > 1) {
11171: $ext=pop(@file_parts);
11172: if (@file_parts > 1 && $file_parts[-1] =~ /^\d+$/) {
11173: $version=pop(@file_parts);
11174: }
11175: $name=join('.',@file_parts);
11176: } else {
11177: $name=join('.',@file_parts);
11178: }
11179: return($name,$version,$ext);
11180: }
11181:
11182: #----------------------------------------------Get portfolio file permissions
11183:
11184: sub get_portfile_permissions {
11185: my ($domain,$user) = @_;
11186: my %current_permissions = &dump('file_permissions',$domain,$user);
11187: my ($tmp)=keys(%current_permissions);
11188: if ($tmp=~/^error:/) { undef(%current_permissions); }
11189: return \%current_permissions;
11190: }
11191:
11192: #---------------------------------------------Get portfolio file access controls
11193:
11194: sub get_access_controls {
11195: my ($current_permissions,$group,$file) = @_;
11196: my %access;
11197: my $real_file = $file;
11198: $file =~ s/\.meta$//;
11199: if (defined($file)) {
11200: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
11201: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
11202: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
11203: }
11204: }
11205: } else {
11206: foreach my $key (keys(%{$current_permissions})) {
11207: if ($key =~ /\0accesscontrol$/) {
11208: if (defined($group)) {
11209: if ($key !~ m-^\Q$group\E/-) {
11210: next;
11211: }
11212: }
11213: my ($fullpath) = split(/\0/,$key);
11214: if (ref($$current_permissions{$key}) eq 'HASH') {
11215: foreach my $control (keys(%{$$current_permissions{$key}})) {
11216: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
11217: }
11218: }
11219: }
11220: }
11221: }
11222: return %access;
11223: }
11224:
11225: sub modify_access_controls {
11226: my ($file_name,$changes,$domain,$user)=@_;
11227: my ($outcome,$deloutcome);
11228: my %store_permissions;
11229: my %new_values;
11230: my %new_control;
11231: my %translation;
11232: my @deletions = ();
11233: my $now = time;
11234: if (exists($$changes{'activate'})) {
11235: if (ref($$changes{'activate'}) eq 'HASH') {
11236: my @newitems = sort(keys(%{$$changes{'activate'}}));
11237: my $numnew = scalar(@newitems);
11238: for (my $i=0; $i<$numnew; $i++) {
11239: my $newkey = $newitems[$i];
11240: my $newid = &Apache::loncommon::get_cgi_id();
11241: if ($newkey =~ /^\d+:/) {
11242: $newkey =~ s/^(\d+)/$newid/;
11243: $translation{$1} = $newid;
11244: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
11245: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
11246: $translation{$1} = $newid;
11247: }
11248: $new_values{$file_name."\0".$newkey} =
11249: $$changes{'activate'}{$newitems[$i]};
11250: $new_control{$newkey} = $now;
11251: }
11252: }
11253: }
11254: my %todelete;
11255: my %changed_items;
11256: foreach my $action ('delete','update') {
11257: if (exists($$changes{$action})) {
11258: if (ref($$changes{$action}) eq 'HASH') {
11259: foreach my $key (keys(%{$$changes{$action}})) {
11260: my ($itemnum) = ($key =~ /^([^:]+):/);
11261: if ($action eq 'delete') {
11262: $todelete{$itemnum} = 1;
11263: } else {
11264: $changed_items{$itemnum} = $key;
11265: }
11266: }
11267: }
11268: }
11269: }
11270: # get lock on access controls for file.
11271: my $lockhash = {
11272: $file_name."\0".'locked_access_records' => $env{'user.name'}.
11273: ':'.$env{'user.domain'},
11274: };
11275: my $tries = 0;
11276: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
11277:
11278: while (($gotlock ne 'ok') && $tries < 10) {
11279: $tries ++;
11280: sleep(0.1);
11281: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
11282: }
11283: if ($gotlock eq 'ok') {
11284: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
11285: my ($tmp)=keys(%curr_permissions);
11286: if ($tmp=~/^error:/) { undef(%curr_permissions); }
11287: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
11288: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
11289: if (ref($curr_controls) eq 'HASH') {
11290: foreach my $control_item (keys(%{$curr_controls})) {
11291: my ($itemnum) = ($control_item =~ /^([^:]+):/);
11292: if (defined($todelete{$itemnum})) {
11293: push(@deletions,$file_name."\0".$control_item);
11294: } else {
11295: if (defined($changed_items{$itemnum})) {
11296: $new_control{$changed_items{$itemnum}} = $now;
11297: push(@deletions,$file_name."\0".$control_item);
11298: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
11299: } else {
11300: $new_control{$control_item} = $$curr_controls{$control_item};
11301: }
11302: }
11303: }
11304: }
11305: }
11306: my ($group);
11307: if (&is_course($domain,$user)) {
11308: ($group,my $file) = split(/\//,$file_name,2);
11309: }
11310: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
11311: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
11312: $outcome = &put('file_permissions',\%new_values,$domain,$user);
11313: # remove lock
11314: my @del_lock = ($file_name."\0".'locked_access_records');
11315: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
11316: my $sqlresult =
11317: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
11318: $group);
11319: } else {
11320: $outcome = "error: could not obtain lockfile\n";
11321: }
11322: return ($outcome,$deloutcome,\%new_values,\%translation);
11323: }
11324:
11325: sub make_public_indefinitely {
11326: my (@requrl) = @_;
11327: return &automated_portfile_access('public',\@requrl);
11328: }
11329:
11330: sub automated_portfile_access {
11331: my ($accesstype,$addsref,$delsref,$info) = @_;
11332: unless (($accesstype eq 'public') || ($accesstype eq 'ip')) {
11333: return 'invalid';
11334: }
11335: my %urls;
11336: if (ref($addsref) eq 'ARRAY') {
11337: foreach my $requrl (@{$addsref}) {
11338: if (&is_portfolio_url($requrl)) {
11339: unless (exists($urls{$requrl})) {
11340: $urls{$requrl} = 'add';
11341: }
11342: }
11343: }
11344: }
11345: if (ref($delsref) eq 'ARRAY') {
11346: foreach my $requrl (@{$delsref}) {
11347: if (&is_portfolio_url($requrl)) {
11348: unless (exists($urls{$requrl})) {
11349: $urls{$requrl} = 'delete';
11350: }
11351: }
11352: }
11353: }
11354: unless (keys(%urls)) {
11355: return 'invalid';
11356: }
11357: my $ip;
11358: if ($accesstype eq 'ip') {
11359: if (ref($info) eq 'HASH') {
11360: if ($info->{'ip'} ne '') {
11361: $ip = $info->{'ip'};
11362: }
11363: }
11364: if ($ip eq '') {
11365: return 'invalid';
11366: }
11367: }
11368: my $errors;
11369: my $now = time;
11370: my %current_perms;
11371: foreach my $requrl (sort(keys(%urls))) {
11372: my $action;
11373: if ($urls{$requrl} eq 'add') {
11374: $action = 'activate';
11375: } else {
11376: $action = 'none';
11377: }
11378: my $aclnum = 0;
11379: my (undef,$udom,$unum,$file_name,$group) =
11380: &parse_portfolio_url($requrl);
11381: unless (exists($current_perms{$unum.':'.$udom})) {
11382: $current_perms{$unum.':'.$udom} = &get_portfile_permissions($udom,$unum);
11383: }
11384: my %access_controls = &get_access_controls($current_perms{$unum.':'.$udom},
11385: $group,$file_name);
11386: foreach my $key (keys(%{$access_controls{$file_name}})) {
11387: my ($num,$scope,$end,$start) =
11388: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
11389: if ($scope eq $accesstype) {
11390: if (($start <= $now) && ($end == 0)) {
11391: if ($accesstype eq 'ip') {
11392: if (ref($access_controls{$file_name}{$key}) eq 'HASH') {
11393: if (ref($access_controls{$file_name}{$key}{'ip'}) eq 'ARRAY') {
11394: if (grep(/^\Q$ip\E$/,@{$access_controls{$file_name}{$key}{'ip'}})) {
11395: if ($urls{$requrl} eq 'add') {
11396: $action = 'none';
11397: last;
11398: } else {
11399: $action = 'delete';
11400: $aclnum = $num;
11401: last;
11402: }
11403: }
11404: }
11405: }
11406: } elsif ($accesstype eq 'public') {
11407: if ($urls{$requrl} eq 'add') {
11408: $action = 'none';
11409: last;
11410: } else {
11411: $action = 'delete';
11412: $aclnum = $num;
11413: last;
11414: }
11415: }
11416: } elsif ($accesstype eq 'public') {
11417: $action = 'update';
11418: $aclnum = $num;
11419: last;
11420: }
11421: }
11422: }
11423: if ($action eq 'none') {
11424: next;
11425: } else {
11426: my %changes;
11427: my $newend = 0;
11428: my $newstart = $now;
11429: my $newkey = $aclnum.':'.$accesstype.'_'.$newend.'_'.$newstart;
11430: $changes{$action}{$newkey} = {
11431: type => $accesstype,
11432: time => {
11433: start => $newstart,
11434: end => $newend,
11435: },
11436: };
11437: if ($accesstype eq 'ip') {
11438: $changes{$action}{$newkey}{'ip'} = [$ip];
11439: }
11440: my ($outcome,$deloutcome,$new_values,$translation) =
11441: &modify_access_controls($file_name,\%changes,$udom,$unum);
11442: unless ($outcome eq 'ok') {
11443: $errors .= $outcome.' ';
11444: }
11445: }
11446: }
11447: if ($errors) {
11448: $errors =~ s/\s$//;
11449: return $errors;
11450: } else {
11451: return 'ok';
11452: }
11453: }
11454:
11455: #------------------------------------------------------Get Marked as Read Only
11456:
11457: sub get_marked_as_readonly {
11458: my ($domain,$user,$what,$group) = @_;
11459: my $current_permissions = &get_portfile_permissions($domain,$user);
11460: my @readonly_files;
11461: my $cmp1=$what;
11462: if (ref($what)) { $cmp1=join('',@{$what}) };
11463: while (my ($file_name,$value) = each(%{$current_permissions})) {
11464: if (defined($group)) {
11465: if ($file_name !~ m-^\Q$group\E/-) {
11466: next;
11467: }
11468: }
11469: if (ref($value) eq "ARRAY"){
11470: foreach my $stored_what (@{$value}) {
11471: my $cmp2=$stored_what;
11472: if (ref($stored_what) eq 'ARRAY') {
11473: $cmp2=join('',@{$stored_what});
11474: }
11475: if ($cmp1 eq $cmp2) {
11476: push(@readonly_files, $file_name);
11477: last;
11478: } elsif (!defined($what)) {
11479: push(@readonly_files, $file_name);
11480: last;
11481: }
11482: }
11483: }
11484: }
11485: return @readonly_files;
11486: }
11487: #-----------------------------------------------------------Get Marked as Read Only Hash
11488:
11489: sub get_marked_as_readonly_hash {
11490: my ($current_permissions,$group,$what) = @_;
11491: my %readonly_files;
11492: while (my ($file_name,$value) = each(%{$current_permissions})) {
11493: if (defined($group)) {
11494: if ($file_name !~ m-^\Q$group\E/-) {
11495: next;
11496: }
11497: }
11498: if (ref($value) eq "ARRAY"){
11499: foreach my $stored_what (@{$value}) {
11500: if (ref($stored_what) eq 'ARRAY') {
11501: foreach my $lock_descriptor(@{$stored_what}) {
11502: if ($lock_descriptor eq 'graded') {
11503: $readonly_files{$file_name} = 'graded';
11504: } elsif ($lock_descriptor eq 'handback') {
11505: $readonly_files{$file_name} = 'handback';
11506: } else {
11507: if (!exists($readonly_files{$file_name})) {
11508: $readonly_files{$file_name} = 'locked';
11509: }
11510: }
11511: }
11512: }
11513: }
11514: }
11515: }
11516: return %readonly_files;
11517: }
11518: # ------------------------------------------------------------ Unmark as Read Only
11519:
11520: sub unmark_as_readonly {
11521: # unmarks $file_name (if $file_name is defined), or all files locked by $what
11522: # for portfolio submissions, $what contains [$symb,$crsid]
11523: my ($domain,$user,$what,$file_name,$group) = @_;
11524: $file_name = &declutter_portfile($file_name);
11525: my $symb_crs = $what;
11526: if (ref($what)) { $symb_crs=join('',@$what); }
11527: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
11528: my ($tmp)=keys(%current_permissions);
11529: if ($tmp=~/^error:/) { undef(%current_permissions); }
11530: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
11531: foreach my $file (@readonly_files) {
11532: my $clean_file = &declutter_portfile($file);
11533: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
11534: my $current_locks = $current_permissions{$file};
11535: my @new_locks;
11536: my @del_keys;
11537: if (ref($current_locks) eq "ARRAY"){
11538: foreach my $locker (@{$current_locks}) {
11539: my $compare=$locker;
11540: if (ref($locker) eq 'ARRAY') {
11541: $compare=join('',@{$locker});
11542: if ($compare ne $symb_crs) {
11543: push(@new_locks, $locker);
11544: }
11545: }
11546: }
11547: if (scalar(@new_locks) > 0) {
11548: $current_permissions{$file} = \@new_locks;
11549: } else {
11550: push(@del_keys, $file);
11551: &del('file_permissions',\@del_keys, $domain, $user);
11552: delete($current_permissions{$file});
11553: }
11554: }
11555: }
11556: &put('file_permissions',\%current_permissions,$domain,$user);
11557: return;
11558: }
11559:
11560: # ------------------------------------------------------------ Directory lister
11561:
11562: sub dirlist {
11563: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
11564: $uri=~s/^\///;
11565: $uri=~s/\/$//;
11566: my ($udom, $uname);
11567: if ($getuserdir) {
11568: $udom = $userdomain;
11569: $uname = $username;
11570: } else {
11571: (undef,$udom,$uname)=split(/\//,$uri);
11572: if(defined($userdomain)) {
11573: $udom = $userdomain;
11574: }
11575: if(defined($username)) {
11576: $uname = $username;
11577: }
11578: }
11579: my ($dirRoot,$listing,@listing_results);
11580:
11581: $dirRoot = $perlvar{'lonDocRoot'};
11582: if (defined($getpropath)) {
11583: $dirRoot = &propath($udom,$uname);
11584: $dirRoot =~ s/\/$//;
11585: } elsif (defined($getuserdir)) {
11586: my $subdir=$uname.'__';
11587: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
11588: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
11589: ."/$udom/$subdir/$uname";
11590: } elsif (defined($alternateRoot)) {
11591: $dirRoot = $alternateRoot;
11592: }
11593:
11594: if($udom) {
11595: if($uname) {
11596: my $uhome = &homeserver($uname,$udom);
11597: if ($uhome eq 'no_host') {
11598: return ([],'no_host');
11599: }
11600: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
11601: .$getuserdir.':'.&escape($dirRoot)
11602: .':'.&escape($uname).':'.&escape($udom),$uhome);
11603: if ($listing eq 'unknown_cmd') {
11604: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
11605: } else {
11606: @listing_results = map { &unescape($_); } split(/:/,$listing);
11607: }
11608: if ($listing eq 'unknown_cmd') {
11609: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
11610: @listing_results = split(/:/,$listing);
11611: } else {
11612: @listing_results = map { &unescape($_); } split(/:/,$listing);
11613: }
11614: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
11615: ($listing eq 'rejected') || ($listing eq 'refused') ||
11616: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
11617: return ([],$listing);
11618: } else {
11619: return (\@listing_results);
11620: }
11621: } elsif(!$alternateRoot) {
11622: my (%allusers,%listerror);
11623: my %servers = &get_servers($udom,'library');
11624: foreach my $tryserver (keys(%servers)) {
11625: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
11626: &escape($udom),$tryserver);
11627: if ($listing eq 'unknown_cmd') {
11628: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
11629: $udom, $tryserver);
11630: } else {
11631: @listing_results = map { &unescape($_); } split(/:/,$listing);
11632: }
11633: if ($listing eq 'unknown_cmd') {
11634: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
11635: $udom, $tryserver);
11636: @listing_results = split(/:/,$listing);
11637: } else {
11638: @listing_results =
11639: map { &unescape($_); } split(/:/,$listing);
11640: }
11641: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
11642: ($listing eq 'rejected') || ($listing eq 'refused') ||
11643: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
11644: $listerror{$tryserver} = $listing;
11645: } else {
11646: foreach my $line (@listing_results) {
11647: my ($entry) = split(/&/,$line,2);
11648: $allusers{$entry} = 1;
11649: }
11650: }
11651: }
11652: my @alluserslist=();
11653: foreach my $user (sort(keys(%allusers))) {
11654: push(@alluserslist,$user.'&user');
11655: }
11656:
11657: if (!%listerror) {
11658: # no errors
11659: return (\@alluserslist);
11660: } elsif (scalar(keys(%servers)) == 1) {
11661: # one library server, one error
11662: my ($key) = keys(%listerror);
11663: return (\@alluserslist, $listerror{$key});
11664: } elsif ( grep { $_ eq 'con_lost' } values(%listerror) ) {
11665: # con_lost indicates that we might miss data from at least one
11666: # library server
11667: return (\@alluserslist, 'con_lost');
11668: } else {
11669: # multiple library servers and no con_lost -> data should be
11670: # complete.
11671: return (\@alluserslist);
11672: }
11673:
11674: } else {
11675: return ([],'missing username');
11676: }
11677: } elsif(!defined($getpropath)) {
11678: my $path = $perlvar{'lonDocRoot'}.'/res/';
11679: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
11680: return (\@all_domains);
11681: } else {
11682: return ([],'missing domain');
11683: }
11684: }
11685:
11686: # --------------------------------------------- GetFileTimestamp
11687: # This function utilizes dirlist and returns the date stamp for
11688: # when it was last modified. It will also return an error of -1
11689: # if an error occurs
11690:
11691: sub GetFileTimestamp {
11692: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
11693: $studentDomain = &LONCAPA::clean_domain($studentDomain);
11694: $studentName = &LONCAPA::clean_username($studentName);
11695: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
11696: undef,$getuserdir);
11697: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
11698: return -1;
11699: }
11700: if (ref($fileref) eq 'ARRAY') {
11701: my @stats = split('&',$fileref->[0]);
11702: # @stats contains first the filename, then the stat output
11703: return $stats[10]; # so this is 10 instead of 9.
11704: } else {
11705: return -1;
11706: }
11707: }
11708:
11709: sub stat_file {
11710: my ($uri) = @_;
11711: $uri = &clutter_with_no_wrapper($uri);
11712:
11713: my ($udom,$uname,$file);
11714: if ($uri =~ m-^/(uploaded|editupload)/-) {
11715: ($udom,$uname,$file) =
11716: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
11717: $file = 'userfiles/'.$file;
11718: }
11719: if ($uri =~ m-^/res/-) {
11720: ($udom,$uname) =
11721: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
11722: $file = $uri;
11723: }
11724:
11725: if (!$udom || !$uname || !$file) {
11726: # unable to handle the uri
11727: return ();
11728: }
11729: my $getpropath;
11730: if ($file =~ /^userfiles\//) {
11731: $getpropath = 1;
11732: }
11733: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
11734: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
11735: return ();
11736: } else {
11737: if (ref($listref) eq 'ARRAY') {
11738: my @stats = split('&',$listref->[0]);
11739: shift(@stats); #filename is first
11740: return @stats;
11741: }
11742: }
11743: return ();
11744: }
11745:
11746: # --------------------------------------------------------- recursedirs
11747: # Recursive function to traverse either a specific user's Authoring Space
11748: # or corresponding Published Resource Space, and populate the hash ref:
11749: # $dirhashref with URLs of all directories, and if $filehashref hash
11750: # ref arg is provided, the URLs of any files, excluding versioned, .meta,
11751: # or .rights files in resource space, and .meta, .save, .log, and .bak
11752: # files in Authoring Space.
11753: #
11754: # Inputs:
11755: #
11756: # $is_home - true if current server is home server for user's space
11757: # $context - either: priv, or res respectively for Authoring or Resource Space.
11758: # $docroot - Document root (i.e., /home/httpd/html
11759: # $toppath - Top level directory (i.e., /res/$dom/$uname or /priv/$dom/$uname
11760: # $relpath - Current path (relative to top level).
11761: # $dirhashref - reference to hash to populate with URLs of directories (Required)
11762: # $filehashref - reference to hash to populate with URLs of files (Optional)
11763: #
11764: # Returns: nothing
11765: #
11766: # Side Effects: populates $dirhashref, and $filehashref (if provided).
11767: #
11768: # Currently used by interface/londocs.pm to create linked select boxes for
11769: # directory and filename to import a Course "Author" resource into a course, and
11770: # also to create linked select boxes for Authoring Space and Directory to choose
11771: # save location for creation of a new "standard" problem from the Course Editor.
11772: #
11773:
11774: sub recursedirs {
11775: my ($is_home,$context,$docroot,$toppath,$relpath,$dirhashref,$filehashref) = @_;
11776: return unless (ref($dirhashref) eq 'HASH');
11777: my $currpath = $docroot.$toppath;
11778: if ($relpath) {
11779: $currpath .= "/$relpath";
11780: }
11781: my $savefile;
11782: if (ref($filehashref)) {
11783: $savefile = 1;
11784: }
11785: if ($is_home) {
11786: if (opendir(my $dirh,$currpath)) {
11787: foreach my $item (sort { lc($a) cmp lc($b) } grep(!/^\.+$/,readdir($dirh))) {
11788: next if ($item eq '');
11789: if (-d "$currpath/$item") {
11790: my $newpath;
11791: if ($relpath) {
11792: $newpath = "$relpath/$item";
11793: } else {
11794: $newpath = $item;
11795: }
11796: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
11797: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
11798: } elsif ($savefile) {
11799: if ($context eq 'priv') {
11800: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
11801: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
11802: }
11803: } else {
11804: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/) || ($item =~ /\.rights$/)) {
11805: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
11806: }
11807: }
11808: }
11809: }
11810: closedir($dirh);
11811: }
11812: } else {
11813: my ($dirlistref,$listerror) =
11814: &dirlist($toppath.$relpath);
11815: my @dir_lines;
11816: my $dirptr=16384;
11817: if (ref($dirlistref) eq 'ARRAY') {
11818: foreach my $dir_line (sort
11819: {
11820: my ($afile)=split('&',$a,2);
11821: my ($bfile)=split('&',$b,2);
11822: return (lc($afile) cmp lc($bfile));
11823: } (@{$dirlistref})) {
11824: my ($item,$dom,undef,$testdir,undef,undef,undef,undef,$size,undef,$mtime,undef,undef,undef,$obs,undef) =
11825: split(/\&/,$dir_line,16);
11826: $item =~ s/\s+$//;
11827: next if (($item =~ /^\.\.?$/) || ($obs));
11828: if ($dirptr&$testdir) {
11829: my $newpath;
11830: if ($relpath) {
11831: $newpath = "$relpath/$item";
11832: } else {
11833: $relpath = '/';
11834: $newpath = $item;
11835: }
11836: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
11837: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
11838: } elsif ($savefile) {
11839: if ($context eq 'priv') {
11840: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
11841: $filehashref->{$relpath}{$item} = 1;
11842: }
11843: } else {
11844: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/)) {
11845: $filehashref->{$relpath}{$item} = 1;
11846: }
11847: }
11848: }
11849: }
11850: }
11851: }
11852: return;
11853: }
11854:
11855: # -------------------------------------------------------- Value of a Condition
11856:
11857: # gets the value of a specific preevaluated condition
11858: # stored in the string $env{user.state.<cid>}
11859: # or looks up a condition reference in the bighash and if if hasn't
11860: # already been evaluated recurses into docondval to get the value of
11861: # the condition, then memoizing it to
11862: # $env{user.state.<cid>.<condition>}
11863: sub directcondval {
11864: my $number=shift;
11865: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
11866: &Apache::lonuserstate::evalstate();
11867: }
11868: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
11869: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
11870: } elsif ($number =~ /^_/) {
11871: my $sub_condition;
11872: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11873: &GDBM_READER(),0640)) {
11874: $sub_condition=$bighash{'conditions'.$number};
11875: untie(%bighash);
11876: }
11877: my $value = &docondval($sub_condition);
11878: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
11879: return $value;
11880: }
11881: if ($env{'user.state.'.$env{'request.course.id'}}) {
11882: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
11883: } else {
11884: return 2;
11885: }
11886: }
11887:
11888: # get the collection of conditions for this resource
11889: sub condval {
11890: my $condidx=shift;
11891: my $allpathcond='';
11892: foreach my $cond (split(/\|/,$condidx)) {
11893: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
11894: $allpathcond.=
11895: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
11896: }
11897: }
11898: $allpathcond=~s/\|$//;
11899: return &docondval($allpathcond);
11900: }
11901:
11902: #evaluates an expression of conditions
11903: sub docondval {
11904: my ($allpathcond) = @_;
11905: my $result=0;
11906: if ($env{'request.course.id'}
11907: && defined($allpathcond)) {
11908: my $operand='|';
11909: my @stack;
11910: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
11911: if ($chunk eq '(') {
11912: push @stack,($operand,$result);
11913: } elsif ($chunk eq ')') {
11914: my $before=pop @stack;
11915: if (pop @stack eq '&') {
11916: $result=$result>$before?$before:$result;
11917: } else {
11918: $result=$result>$before?$result:$before;
11919: }
11920: } elsif (($chunk eq '&') || ($chunk eq '|')) {
11921: $operand=$chunk;
11922: } else {
11923: my $new=directcondval($chunk);
11924: if ($operand eq '&') {
11925: $result=$result>$new?$new:$result;
11926: } else {
11927: $result=$result>$new?$result:$new;
11928: }
11929: }
11930: }
11931: }
11932: return $result;
11933: }
11934:
11935: # ---------------------------------------------------- Devalidate courseresdata
11936:
11937: sub devalidatecourseresdata {
11938: my ($coursenum,$coursedomain)=@_;
11939: my $hashid=$coursenum.':'.$coursedomain;
11940: &devalidate_cache_new('courseres',$hashid);
11941: }
11942:
11943:
11944: # --------------------------------------------------- Course Resourcedata Query
11945: #
11946: # Parameters:
11947: # $coursenum - Number of the course.
11948: # $coursedomain - Domain at which the course was created.
11949: # Returns:
11950: # A hash of the course parameters along (I think) with timestamps
11951: # and version info.
11952:
11953: sub get_courseresdata {
11954: my ($coursenum,$coursedomain)=@_;
11955: my $coursehom=&homeserver($coursenum,$coursedomain);
11956: my $hashid=$coursenum.':'.$coursedomain;
11957: my ($result,$cached)=&is_cached_new('courseres',$hashid);
11958: my %dumpreply;
11959: unless (defined($cached)) {
11960: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
11961: $result=\%dumpreply;
11962: my ($tmp) = keys(%dumpreply);
11963: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
11964: &do_cache_new('courseres',$hashid,$result,600);
11965: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
11966: return $tmp;
11967: } elsif ($tmp =~ /^(error)/) {
11968: $result=undef;
11969: &do_cache_new('courseres',$hashid,$result,600);
11970: }
11971: }
11972: return $result;
11973: }
11974:
11975: sub devalidateuserresdata {
11976: my ($uname,$udom)=@_;
11977: my $hashid="$udom:$uname";
11978: &devalidate_cache_new('userres',$hashid);
11979: }
11980:
11981: sub get_userresdata {
11982: my ($uname,$udom)=@_;
11983: #most student don\'t have any data set, check if there is some data
11984: if (&EXT_cache_status($udom,$uname)) { return undef; }
11985:
11986: my $hashid="$udom:$uname";
11987: my ($result,$cached)=&is_cached_new('userres',$hashid);
11988: if (!defined($cached)) {
11989: my %resourcedata=&dump('resourcedata',$udom,$uname);
11990: $result=\%resourcedata;
11991: &do_cache_new('userres',$hashid,$result,600);
11992: }
11993: my ($tmp)=keys(%$result);
11994: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
11995: return $result;
11996: }
11997: #error 2 occurs when the .db doesn't exist
11998: if ($tmp!~/error: 2 /) {
11999: if ((!defined($cached)) || ($tmp ne 'con_lost')) {
12000: &logthis("<font color=\"blue\">WARNING:".
12001: " Trying to get resource data for ".
12002: $uname." at ".$udom.": ".
12003: $tmp."</font>");
12004: }
12005: } elsif ($tmp=~/error: 2 /) {
12006: #&EXT_cache_set($udom,$uname);
12007: &do_cache_new('userres',$hashid,undef,600);
12008: undef($tmp); # not really an error so don't send it back
12009: }
12010: return $tmp;
12011: }
12012: #----------------------------------------------- resdata - return resource data
12013: # Purpose:
12014: # Return resource data for either users or for a course.
12015: # Parameters:
12016: # $name - Course/user name.
12017: # $domain - Name of the domain the user/course is registered on.
12018: # $type - Type of thing $name is (must be 'course' or 'user')
12019: # $mapp - decluttered URL of enclosing map
12020: # $recursed - Ref to scalar -- set to 1, if nested maps have been recursed.
12021: # $recurseup - Ref to array of map URLs, starting with map containing
12022: # $mapp up through hierarchy of nested maps to top level map.
12023: # $courseid - CourseID (first part of param identifier).
12024: # $modifier - Middle part of param identifier.
12025: # $what - Last part of param identifier.
12026: # @which - Array of names of resources desired.
12027: # Returns:
12028: # The value of the first reasource in @which that is found in the
12029: # resource hash.
12030: # Exceptional Conditions:
12031: # If the $type passed in is not valid (not the string 'course' or
12032: # 'user', an undefined reference is returned.
12033: # If none of the resources are found, an undef is returned
12034: sub resdata {
12035: my ($name,$domain,$type,$mapp,$recursed,$recurseup,$courseid,
12036: $modifier,$what,@which)=@_;
12037: my $result;
12038: if ($type eq 'course') {
12039: $result=&get_courseresdata($name,$domain);
12040: } elsif ($type eq 'user') {
12041: $result=&get_userresdata($name,$domain);
12042: }
12043: if (!ref($result)) { return $result; }
12044: foreach my $item (@which) {
12045: if ($item->[1] eq 'course') {
12046: if ((ref($recurseup) eq 'ARRAY') && (ref($recursed) eq 'SCALAR')) {
12047: unless ($$recursed) {
12048: @{$recurseup} = &get_map_hierarchy($mapp,$courseid);
12049: $$recursed = 1;
12050: }
12051: foreach my $item (@${recurseup}) {
12052: my $norecursechk=$courseid.$modifier.$item.'___(all).'.$what;
12053: last if (defined($result->{$norecursechk}));
12054: my $recursechk=$courseid.$modifier.$item.'___(rec).'.$what;
12055: if (defined($result->{$recursechk})) { return [$result->{$recursechk},'map']; }
12056: }
12057: }
12058: }
12059: if (defined($result->{$item->[0]})) {
12060: return [$result->{$item->[0]},$item->[1]];
12061: }
12062: }
12063: return undef;
12064: }
12065:
12066: sub get_domain_lti {
12067: my ($cdom,$context) = @_;
12068: my ($name,%lti);
12069: if ($context eq 'consumer') {
12070: $name = 'ltitools';
12071: } elsif ($context eq 'provider') {
12072: $name = 'lti';
12073: } else {
12074: return %lti;
12075: }
12076: my ($result,$cached)=&is_cached_new($name,$cdom);
12077: if (defined($cached)) {
12078: if (ref($result) eq 'HASH') {
12079: %lti = %{$result};
12080: }
12081: } else {
12082: my %domconfig = &get_dom('configuration',[$name],$cdom);
12083: if (ref($domconfig{$name}) eq 'HASH') {
12084: %lti = %{$domconfig{$name}};
12085: my %encdomconfig = &get_dom('encconfig',[$name],$cdom);
12086: if (ref($encdomconfig{$name}) eq 'HASH') {
12087: foreach my $id (keys(%lti)) {
12088: if (ref($encdomconfig{$name}{$id}) eq 'HASH') {
12089: foreach my $item ('key','secret') {
12090: $lti{$id}{$item} = $encdomconfig{$name}{$id}{$item};
12091: }
12092: }
12093: }
12094: }
12095: }
12096: my $cachetime = 24*60*60;
12097: &do_cache_new($name,$cdom,\%lti,$cachetime);
12098: }
12099: return %lti;
12100: }
12101:
12102: sub get_numsuppfiles {
12103: my ($cnum,$cdom,$ignorecache)=@_;
12104: my $hashid=$cnum.':'.$cdom;
12105: my ($suppcount,$cached);
12106: unless ($ignorecache) {
12107: ($suppcount,$cached) = &is_cached_new('suppcount',$hashid);
12108: }
12109: unless (defined($cached)) {
12110: my $chome=&homeserver($cnum,$cdom);
12111: unless ($chome eq 'no_host') {
12112: ($suppcount,my $supptools,my $errors) = (0,0,0);
12113: my $suppmap = 'supplemental.sequence';
12114: ($suppcount,$supptools,$errors) =
12115: &Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,
12116: $supptools,$errors);
12117: }
12118: &do_cache_new('suppcount',$hashid,$suppcount,600);
12119: }
12120: return $suppcount;
12121: }
12122:
12123: #
12124: # EXT resource caching routines
12125: #
12126:
12127: {
12128: # Cache (5 seconds) of map hierarchy for speedup of navmaps display
12129: #
12130: # The course for which we cache
12131: my $cachedmapkey='';
12132: # The cached recursive maps for this course
12133: my %cachedmaps=();
12134: # When this was last done
12135: my $cachedmaptime='';
12136:
12137: sub clear_EXT_cache_status {
12138: &delenv('cache.EXT.');
12139: }
12140:
12141: sub EXT_cache_status {
12142: my ($target_domain,$target_user) = @_;
12143: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
12144: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
12145: # We know already the user has no data
12146: return 1;
12147: } else {
12148: return 0;
12149: }
12150: }
12151:
12152: sub EXT_cache_set {
12153: my ($target_domain,$target_user) = @_;
12154: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
12155: #&appenv({$cachename => time});
12156: }
12157:
12158: # --------------------------------------------------------- Value of a Variable
12159: sub EXT {
12160:
12161: my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid)=@_;
12162: unless ($varname) { return ''; }
12163: #get real user name/domain, courseid and symb
12164: my $courseid;
12165: my $publicuser;
12166: if ($symbparm) {
12167: $symbparm=&get_symb_from_alias($symbparm);
12168: }
12169: if (!($uname && $udom)) {
12170: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
12171: if (!$symbparm) { $symbparm=$cursymb; }
12172: } else {
12173: $courseid=$env{'request.course.id'};
12174: }
12175: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
12176: my $rest;
12177: if (defined($therest[0])) {
12178: $rest=join('.',@therest);
12179: } else {
12180: $rest='';
12181: }
12182:
12183: my $qualifierrest=$qualifier;
12184: if ($rest) { $qualifierrest.='.'.$rest; }
12185: my $spacequalifierrest=$space;
12186: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
12187: if ($realm eq 'user') {
12188: # --------------------------------------------------------------- user.resource
12189: if ($space eq 'resource') {
12190: if ( (defined($Apache::lonhomework::parsing_a_problem)
12191: || defined($Apache::lonhomework::parsing_a_task))
12192: &&
12193: ($symbparm eq &symbread()) ) {
12194: # if we are in the middle of processing the resource the
12195: # get the value we are planning on committing
12196: if (defined($Apache::lonhomework::results{$qualifierrest})) {
12197: return $Apache::lonhomework::results{$qualifierrest};
12198: } else {
12199: return $Apache::lonhomework::history{$qualifierrest};
12200: }
12201: } else {
12202: my %restored;
12203: if ($publicuser || $env{'request.state'} eq 'construct') {
12204: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
12205: } else {
12206: %restored=&restore($symbparm,$courseid,$udom,$uname);
12207: }
12208: return $restored{$qualifierrest};
12209: }
12210: # ----------------------------------------------------------------- user.access
12211: } elsif ($space eq 'access') {
12212: # FIXME - not supporting calls for a specific user
12213: return &allowed($qualifier,$rest);
12214: # ------------------------------------------ user.preferences, user.environment
12215: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
12216: if (($uname eq $env{'user.name'}) &&
12217: ($udom eq $env{'user.domain'})) {
12218: return $env{join('.',('environment',$qualifierrest))};
12219: } else {
12220: my %returnhash;
12221: if (!$publicuser) {
12222: %returnhash=&userenvironment($udom,$uname,
12223: $qualifierrest);
12224: }
12225: return $returnhash{$qualifierrest};
12226: }
12227: # ----------------------------------------------------------------- user.course
12228: } elsif ($space eq 'course') {
12229: # FIXME - not supporting calls for a specific user
12230: return $env{join('.',('request.course',$qualifier))};
12231: # ------------------------------------------------------------------- user.role
12232: } elsif ($space eq 'role') {
12233: # FIXME - not supporting calls for a specific user
12234: my ($role,$where)=split(/\./,$env{'request.role'});
12235: if ($qualifier eq 'value') {
12236: return $role;
12237: } elsif ($qualifier eq 'extent') {
12238: return $where;
12239: }
12240: # ----------------------------------------------------------------- user.domain
12241: } elsif ($space eq 'domain') {
12242: return $udom;
12243: # ------------------------------------------------------------------- user.name
12244: } elsif ($space eq 'name') {
12245: return $uname;
12246: # ---------------------------------------------------- Any other user namespace
12247: } else {
12248: my %reply;
12249: if (!$publicuser) {
12250: %reply=&get($space,[$qualifierrest],$udom,$uname);
12251: }
12252: return $reply{$qualifierrest};
12253: }
12254: } elsif ($realm eq 'query') {
12255: # ---------------------------------------------- pull stuff out of query string
12256: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
12257: [$spacequalifierrest]);
12258: return $env{'form.'.$spacequalifierrest};
12259: } elsif ($realm eq 'request') {
12260: # ------------------------------------------------------------- request.browser
12261: if ($space eq 'browser') {
12262: return $env{'browser.'.$qualifier};
12263: # ------------------------------------------------------------ request.filename
12264: } else {
12265: return $env{'request.'.$spacequalifierrest};
12266: }
12267: } elsif ($realm eq 'course') {
12268: # ---------------------------------------------------------- course.description
12269: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
12270: } elsif ($realm eq 'resource') {
12271:
12272: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
12273: if (!$symbparm) { $symbparm=&symbread(); }
12274: }
12275:
12276: if ($qualifier eq '') {
12277: if ($space eq 'title') {
12278: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
12279: return &gettitle($symbparm);
12280: }
12281:
12282: if ($space eq 'map') {
12283: my ($map) = &decode_symb($symbparm);
12284: return &symbread($map);
12285: }
12286: if ($space eq 'maptitle') {
12287: my ($map) = &decode_symb($symbparm);
12288: return &gettitle($map);
12289: }
12290: if ($space eq 'filename') {
12291: if ($symbparm) {
12292: return &clutter((&decode_symb($symbparm))[2]);
12293: }
12294: return &hreflocation('',$env{'request.filename'});
12295: }
12296:
12297: if ((defined($courseid)) && ($courseid eq $env{'request.course.id'}) && $symbparm) {
12298: if ($space eq 'visibleparts') {
12299: my $navmap = Apache::lonnavmaps::navmap->new();
12300: my $item;
12301: if (ref($navmap)) {
12302: my $res = $navmap->getBySymb($symbparm);
12303: my $parts = $res->parts();
12304: if (ref($parts) eq 'ARRAY') {
12305: $item = join(',',@{$parts});
12306: }
12307: undef($navmap);
12308: }
12309: return $item;
12310: }
12311: }
12312: }
12313:
12314: my ($section, $group, @groups, @recurseup, $recursed);
12315: my ($courselevelm,$courseleveli,$courselevel,$mapp);
12316: if (($courseid eq '') && ($cid)) {
12317: $courseid = $cid;
12318: }
12319: if (($symbparm && $courseid) &&
12320: (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid))) {
12321:
12322: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
12323:
12324: # ----------------------------------------------------- Cascading lookup scheme
12325: my $symbp=$symbparm;
12326: $mapp=&deversion((&decode_symb($symbp))[0]);
12327: my $symbparm=$symbp.'.'.$spacequalifierrest;
12328: my $recurseparm=$mapp.'___(rec).'.$spacequalifierrest;
12329: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
12330: if (($env{'user.name'} eq $uname) &&
12331: ($env{'user.domain'} eq $udom)) {
12332: $section=$env{'request.course.sec'};
12333: @groups = split(/:/,$env{'request.course.groups'});
12334: @groups=&sort_course_groups($courseid,@groups);
12335: } else {
12336: if (! defined($usection)) {
12337: $section=&getsection($udom,$uname,$courseid);
12338: } else {
12339: $section = $usection;
12340: }
12341: @groups = &get_users_groups($udom,$uname,$courseid);
12342: }
12343:
12344: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
12345: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
12346: my $secleveli=$courseid.'.['.$section.'].'.$recurseparm;
12347: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
12348:
12349: $courselevel=$courseid.'.'.$spacequalifierrest;
12350: my $courselevelr=$courseid.'.'.$symbparm;
12351: $courseleveli=$courseid.'.'.$recurseparm;
12352: $courselevelm=$courseid.'.'.$mapparm;
12353:
12354: # ----------------------------------------------------------- first, check user
12355:
12356: my $userreply=&resdata($uname,$udom,'user',$mapp,\$recursed,
12357: \@recurseup,$courseid,'.',$spacequalifierrest,
12358: ([$courselevelr,'resource'],
12359: [$courselevelm,'map' ],
12360: [$courseleveli,'map' ],
12361: [$courselevel, 'course' ]));
12362: if (defined($userreply)) { return &get_reply($userreply); }
12363:
12364: # ------------------------------------------------ second, check some of course
12365: my $coursereply;
12366: if (@groups > 0) {
12367: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
12368: $recurseparm,$mapparm,$spacequalifierrest,
12369: $mapp,\$recursed,\@recurseup);
12370: if (defined($coursereply)) { return &get_reply($coursereply); }
12371: }
12372:
12373: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
12374: $env{'course.'.$courseid.'.domain'},
12375: 'course',$mapp,\$recursed,\@recurseup,
12376: $courseid,'.['.$section.'].',$spacequalifierrest,
12377: ([$seclevelr, 'resource'],
12378: [$seclevelm, 'map' ],
12379: [$secleveli, 'map' ],
12380: [$seclevel, 'course' ],
12381: [$courselevelr,'resource']));
12382: if (defined($coursereply)) { return &get_reply($coursereply); }
12383:
12384: # ------------------------------------------------------ third, check map parms
12385: my %parmhash=();
12386: my $thisparm='';
12387: if (tie(%parmhash,'GDBM_File',
12388: $env{'request.course.fn'}.'_parms.db',
12389: &GDBM_READER(),0640)) {
12390: $thisparm=$parmhash{$symbparm};
12391: untie(%parmhash);
12392: }
12393: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
12394: }
12395: # ------------------------------------------ fourth, look in resource metadata
12396:
12397: my $what = $spacequalifierrest;
12398: $what=~s/\./\_/;
12399: my $filename;
12400: if (!$symbparm) { $symbparm=&symbread(); }
12401: if ($symbparm) {
12402: $filename=(&decode_symb($symbparm))[2];
12403: } else {
12404: $filename=$env{'request.filename'};
12405: }
12406: my $toolsymb;
12407: if (($filename =~ /ext\.tool$/) && ($what ne '0_gradable')) {
12408: $toolsymb = $symbparm;
12409: }
12410: my $metadata=&metadata($filename,$what,$toolsymb);
12411: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
12412: $metadata=&metadata($filename,'parameter_'.$what,$toolsymb);
12413: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
12414:
12415: # ----------------------------------------------- fifth, look in rest of course
12416: if ($symbparm && defined($courseid) &&
12417: $courseid eq $env{'request.course.id'}) {
12418: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
12419: $env{'course.'.$courseid.'.domain'},
12420: 'course',$mapp,\$recursed,\@recurseup,
12421: $courseid,'.',$spacequalifierrest,
12422: ([$courselevelm,'map' ],
12423: [$courseleveli,'map' ],
12424: [$courselevel, 'course']));
12425: if (defined($coursereply)) { return &get_reply($coursereply); }
12426: }
12427: # ------------------------------------------------------------------ Cascade up
12428: unless ($space eq '0') {
12429: my @parts=split(/_/,$space);
12430: my $id=pop(@parts);
12431: my $part=join('_',@parts);
12432: if ($part eq '') { $part='0'; }
12433: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
12434: $symbparm,$udom,$uname,$section,1);
12435: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
12436: }
12437: if ($recurse) { return undef; }
12438: my $pack_def=&packages_tab_default($filename,$varname,$toolsymb);
12439: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
12440: # ---------------------------------------------------- Any other user namespace
12441: } elsif ($realm eq 'environment') {
12442: # ----------------------------------------------------------------- environment
12443: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
12444: return $env{'environment.'.$spacequalifierrest};
12445: } else {
12446: if ($uname eq 'anonymous' && $udom eq '') {
12447: return '';
12448: }
12449: my %returnhash=&userenvironment($udom,$uname,
12450: $spacequalifierrest);
12451: return $returnhash{$spacequalifierrest};
12452: }
12453: } elsif ($realm eq 'system') {
12454: # ----------------------------------------------------------------- system.time
12455: if ($space eq 'time') {
12456: return time;
12457: }
12458: } elsif ($realm eq 'server') {
12459: # ----------------------------------------------------------------- system.time
12460: if ($space eq 'name') {
12461: return $ENV{'SERVER_NAME'};
12462: }
12463: } elsif ($realm eq 'client') {
12464: if ($space eq 'remote_addr') {
12465: return &get_requestor_ip();
12466: }
12467: }
12468: return '';
12469: }
12470:
12471: sub get_reply {
12472: my ($reply_value) = @_;
12473: if (ref($reply_value) eq 'ARRAY') {
12474: if (wantarray) {
12475: return @$reply_value;
12476: }
12477: return $reply_value->[0];
12478: } else {
12479: return $reply_value;
12480: }
12481: }
12482:
12483: sub check_group_parms {
12484: my ($courseid,$groups,$symbparm,$recurseparm,$mapparm,$what,$mapp,
12485: $recursed,$recurseupref) = @_;
12486: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$recurseparm,'map'],
12487: [$what,'course']);
12488: my $coursereply;
12489: foreach my $group (@{$groups}) {
12490: my @groupitems = ();
12491: foreach my $level (@levels) {
12492: my $item = $courseid.'.['.$group.'].'.$level->[0];
12493: push(@groupitems,[$item,$level->[1]]);
12494: }
12495: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
12496: $env{'course.'.$courseid.'.domain'},
12497: 'course',$mapp,$recursed,$recurseupref,
12498: $courseid,'.['.$group.'].',$what,
12499: @groupitems);
12500: last if (defined($coursereply));
12501: }
12502: return $coursereply;
12503: }
12504:
12505: sub get_map_hierarchy {
12506: my ($mapname,$courseid) = @_;
12507: my @recurseup = ();
12508: if ($mapname) {
12509: if (($cachedmapkey eq $courseid) &&
12510: (abs($cachedmaptime-time)<5)) {
12511: if (ref($cachedmaps{$mapname}) eq 'ARRAY') {
12512: return @{$cachedmaps{$mapname}};
12513: }
12514: }
12515: my $navmap = Apache::lonnavmaps::navmap->new();
12516: if (ref($navmap)) {
12517: @recurseup = $navmap->recurseup_maps($mapname);
12518: undef($navmap);
12519: $cachedmaps{$mapname} = \@recurseup;
12520: $cachedmaptime=time;
12521: $cachedmapkey=$courseid;
12522: }
12523: }
12524: return @recurseup;
12525: }
12526:
12527: }
12528:
12529: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
12530: my ($courseid,@groups) = @_;
12531: @groups = sort(@groups);
12532: return @groups;
12533: }
12534:
12535: sub packages_tab_default {
12536: my ($uri,$varname,$toolsymb)=@_;
12537: my (undef,$part,$name)=split(/\./,$varname);
12538:
12539: my (@extension,@specifics,$do_default);
12540: foreach my $package (split(/,/,&metadata($uri,'packages',$toolsymb))) {
12541: my ($pack_type,$pack_part)=split(/_/,$package,2);
12542: if ($pack_type eq 'default') {
12543: $do_default=1;
12544: } elsif ($pack_type eq 'extension') {
12545: push(@extension,[$package,$pack_type,$pack_part]);
12546: } elsif ($pack_part eq $part || $pack_type eq 'part') {
12547: # only look at packages defaults for packages that this id is
12548: push(@specifics,[$package,$pack_type,$pack_part]);
12549: }
12550: }
12551: # first look for a package that matches the requested part id
12552: foreach my $package (@specifics) {
12553: my (undef,$pack_type,$pack_part)=@{$package};
12554: next if ($pack_part ne $part);
12555: if (defined($packagetab{"$pack_type&$name&default"})) {
12556: return $packagetab{"$pack_type&$name&default"};
12557: }
12558: }
12559: # look for any possible matching non extension_ package
12560: foreach my $package (@specifics) {
12561: my (undef,$pack_type,$pack_part)=@{$package};
12562: if (defined($packagetab{"$pack_type&$name&default"})) {
12563: return $packagetab{"$pack_type&$name&default"};
12564: }
12565: if ($pack_type eq 'part') { $pack_part='0'; }
12566: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
12567: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
12568: }
12569: }
12570: # look for any posible extension_ match
12571: foreach my $package (@extension) {
12572: my ($package,$pack_type)=@{$package};
12573: if (defined($packagetab{"$pack_type&$name&default"})) {
12574: return $packagetab{"$pack_type&$name&default"};
12575: }
12576: if (defined($packagetab{$package."&$name&default"})) {
12577: return $packagetab{$package."&$name&default"};
12578: }
12579: }
12580: # look for a global default setting
12581: if ($do_default && defined($packagetab{"default&$name&default"})) {
12582: return $packagetab{"default&$name&default"};
12583: }
12584: return undef;
12585: }
12586:
12587: sub add_prefix_and_part {
12588: my ($prefix,$part)=@_;
12589: my $keyroot;
12590: if (defined($prefix) && $prefix !~ /^__/) {
12591: # prefix that has a part already
12592: $keyroot=$prefix;
12593: } elsif (defined($prefix)) {
12594: # prefix that is missing a part
12595: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
12596: } else {
12597: # no prefix at all
12598: if (defined($part)) { $keyroot='_'.$part; }
12599: }
12600: return $keyroot;
12601: }
12602:
12603: # ---------------------------------------------------------------- Get metadata
12604:
12605: my %metaentry;
12606: my %importedpartids;
12607: my %importedrespids;
12608: sub metadata {
12609: my ($uri,$what,$toolsymb,$liburi,$prefix,$depthcount)=@_;
12610: $uri=&declutter($uri);
12611: # if it is a non metadata possible uri return quickly
12612: if (($uri eq '') ||
12613: (($uri =~ m|^/*adm/|) &&
12614: ($uri !~ m|^adm/includes|) && ($uri !~ m{/(smppg|bulletinboard|ext\.tool)$})) ||
12615: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
12616: return undef;
12617: }
12618: if (($uri =~ /^priv/ || $uri=~m{^home/httpd/html/priv})
12619: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
12620: return undef;
12621: }
12622: my $filename=$uri;
12623: $uri=~s/\.meta$//;
12624: #
12625: # Is the metadata already cached?
12626: # Look at timestamp of caching
12627: # Everything is cached by the main uri, libraries are never directly cached
12628: #
12629: if (!defined($liburi)) {
12630: my ($result,$cached)=&is_cached_new('meta',$uri);
12631: if (defined($cached)) { return $result->{':'.$what}; }
12632: }
12633:
12634: #
12635: # If the uri is for an external tool the file from
12636: # which metadata should be retrieved depends on whether
12637: # the tool had been configured to be gradable (set in the Course
12638: # Editor or Resource Editor).
12639: #
12640: # If a valid symb has been included as the third arg in the call
12641: # to &metadata() that can be used to retrieve the value of
12642: # parameter_0_gradable set for the resource, and included in the
12643: # uploaded map containing the tool. The value is retrieved via
12644: # &EXT(), if a valid symb is available. Otherwise the value of
12645: # gradable in the exttool_$marker.db file for the tool instance
12646: # is retrieved via &get().
12647: #
12648: # When lonuserstate::traceroute() calls lonnet::EXT() for
12649: # hiddenresource and encrypturl (during course initialization)
12650: # the map-level parameter for resource.0.gradable included in the
12651: # uploaded map containing the tool will not yet have been stored
12652: # in the user_course_parms.db file for the user's session, so in
12653: # this case fall back to retrieving gradable status from the
12654: # exttool_$marker.db file.
12655: #
12656: # In order to avoid an infinite loop, &metadata() will return
12657: # before a call to &EXT(), if the uri is for an external tool
12658: # and the $what for which metadata is being requested is
12659: # parameter_0_gradable or 0_gradable.
12660: #
12661:
12662: if ($uri =~ /ext\.tool$/) {
12663: if (($what eq 'parameter_0_gradable') || ($what eq '0_gradable')) {
12664: return;
12665: } else {
12666: my ($checked,$use_passback);
12667: if ($toolsymb ne '') {
12668: (undef,undef,my $tooluri) = &decode_symb($toolsymb);
12669: if (($tooluri eq $uri) && (&EXT('resource.0.gradable',$toolsymb))) {
12670: $checked = 1;
12671: if (&EXT('resource.0.gradable',$toolsymb) =~ /^yes$/i) {
12672: $use_passback = 1;
12673: }
12674: }
12675: }
12676: unless ($checked) {
12677: my ($ignore,$cdom,$cnum,$marker) = split(m{/},$uri);
12678: $marker=~s/\D//g;
12679: if ($marker) {
12680: my %toolsettings=&get('exttool_'.$marker,['gradable'],$cdom,$cnum);
12681: $use_passback = $toolsettings{'gradable'};
12682: }
12683: }
12684: if ($use_passback) {
12685: $filename = '/home/httpd/html/res/lib/templates/LTIpassback.tool';
12686: } else {
12687: $filename = '/home/httpd/html/res/lib/templates/LTIstandard.tool';
12688: }
12689: }
12690: }
12691:
12692: {
12693: # Imported parts would go here
12694: my @origfiletagids=();
12695: my $importedparts=0;
12696:
12697: # Imported responseids would go here
12698: my $importedresponses=0;
12699: #
12700: # Is this a recursive call for a library?
12701: #
12702: # if (! exists($metacache{$uri})) {
12703: # $metacache{$uri}={};
12704: # }
12705: my $cachetime = 60*60;
12706: if ($liburi) {
12707: $liburi=&declutter($liburi);
12708: $filename=$liburi;
12709: } else {
12710: &devalidate_cache_new('meta',$uri);
12711: undef(%metaentry);
12712: }
12713: my %metathesekeys=();
12714: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
12715: my $metastring;
12716: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
12717: my $which = &hreflocation('','/'.($liburi || $uri));
12718: $metastring =
12719: &Apache::lonnet::ssi_body($which,
12720: ('grade_target' => 'meta'));
12721: $cachetime = 1; # only want this cached in the child not long term
12722: } elsif (($uri !~ m -^(editupload)/-) &&
12723: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
12724: my $file=&filelocation('',&clutter($filename));
12725: #push(@{$metaentry{$uri.'.file'}},$file);
12726: $metastring=&getfile($file);
12727: }
12728: my $parser=HTML::LCParser->new(\$metastring);
12729: my $token;
12730: undef %metathesekeys;
12731: while ($token=$parser->get_token) {
12732: if ($token->[0] eq 'S') {
12733: if (defined($token->[2]->{'package'})) {
12734: #
12735: # This is a package - get package info
12736: #
12737: my $package=$token->[2]->{'package'};
12738: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
12739: if (defined($token->[2]->{'id'})) {
12740: $keyroot.='_'.$token->[2]->{'id'};
12741: }
12742: if ($metaentry{':packages'}) {
12743: $metaentry{':packages'}.=','.$package.$keyroot;
12744: } else {
12745: $metaentry{':packages'}=$package.$keyroot;
12746: }
12747: foreach my $pack_entry (keys(%packagetab)) {
12748: my $part=$keyroot;
12749: $part=~s/^\_//;
12750: if ($pack_entry=~/^\Q$package\E\&/ ||
12751: $pack_entry=~/^\Q$package\E_0\&/) {
12752: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
12753: # ignore package.tab specified default values
12754: # here &package_tab_default() will fetch those
12755: if ($subp eq 'default') { next; }
12756: my $value=$packagetab{$pack_entry};
12757: my $unikey;
12758: if ($pack =~ /_0$/) {
12759: $unikey='parameter_0_'.$name;
12760: $part=0;
12761: } else {
12762: $unikey='parameter'.$keyroot.'_'.$name;
12763: }
12764: if ($subp eq 'display') {
12765: $value.=' [Part: '.$part.']';
12766: }
12767: $metaentry{':'.$unikey.'.part'}=$part;
12768: $metathesekeys{$unikey}=1;
12769: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
12770: $metaentry{':'.$unikey.'.'.$subp}=$value;
12771: }
12772: if (defined($metaentry{':'.$unikey.'.default'})) {
12773: $metaentry{':'.$unikey}=
12774: $metaentry{':'.$unikey.'.default'};
12775: }
12776: }
12777: }
12778: } else {
12779: #
12780: # This is not a package - some other kind of start tag
12781: #
12782: my $entry=$token->[1];
12783: my $unikey='';
12784:
12785: if ($entry eq 'import') {
12786: #
12787: # Importing a library here
12788: #
12789: my $location=$parser->get_text('/import');
12790: my $dir=$filename;
12791: $dir=~s|[^/]*$||;
12792: $location=&filelocation($dir,$location);
12793:
12794: my $importid=$token->[2]->{'id'};
12795: my $importmode=$token->[2]->{'importmode'};
12796: #
12797: # Check metadata for imported file to
12798: # see if it contained response items
12799: #
12800: my ($origfile,@libfilekeys);
12801: my %currmetaentry = %metaentry;
12802: @libfilekeys = split(/,/,&metadata($location,'keys',undef,undef,undef,
12803: $depthcount+1));
12804: if (grep(/^responseorder$/,@libfilekeys)) {
12805: my $libresponseorder = &metadata($location,'responseorder',undef,undef,
12806: undef,$depthcount+1);
12807: if ($libresponseorder ne '') {
12808: if ($#origfiletagids<0) {
12809: undef(%importedrespids);
12810: undef(%importedpartids);
12811: }
12812: my @respids = split(/\s*,\s*/,$libresponseorder);
12813: if (@respids) {
12814: $importedrespids{$importid} = join(',',map { $importid.'_'.$_ } @respids);
12815: }
12816: if ($importedrespids{$importid} ne '') {
12817: $importedresponses = 1;
12818: # We need to get the original file and the imported file to get the response order correct
12819: # Load and inspect original file
12820: if ($#origfiletagids<0) {
12821: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
12822: $origfile=&getfile($origfilelocation);
12823: @origfiletagids=($origfile=~/<((?:\w+)response|import|part)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12824: }
12825: }
12826: }
12827: }
12828: # Do not overwrite contents of %metaentry hash for resource itself with
12829: # hash populated for imported library file
12830: %metaentry = %currmetaentry;
12831: undef(%currmetaentry);
12832: if ($importmode eq 'part') {
12833: # Import as part(s)
12834: $importedparts=1;
12835: # We need to get the original file and the imported file to get the part order correct
12836: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
12837: # Load and inspect original file if we didn't do that already
12838: if ($#origfiletagids<0) {
12839: undef(%importedrespids);
12840: undef(%importedpartids);
12841: if ($origfile eq '') {
12842: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
12843: $origfile=&getfile($origfilelocation);
12844: @origfiletagids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12845: }
12846: }
12847: my @impfilepartids;
12848: # If <partorder> tag is included in metadata for the imported file
12849: # get the parts in the imported file from that.
12850: if (grep(/^partorder$/,@libfilekeys)) {
12851: %currmetaentry = %metaentry;
12852: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
12853: $depthcount+1);
12854: %metaentry = %currmetaentry;
12855: undef(%currmetaentry);
12856: if ($libpartorder ne '') {
12857: @impfilepartids=split(/\s*,\s*/,$libpartorder);
12858: }
12859: } else {
12860: # If no <partorder> tag available, load and inspect imported file
12861: my $impfile=&getfile($location);
12862: @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12863: }
12864: if ($#impfilepartids>=0) {
12865: # This problem had parts
12866: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
12867: } else {
12868: # Importing by turning a single problem into a problem part
12869: # It gets the import-tags ID as part-ID
12870: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
12871: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
12872: }
12873: } else {
12874: # Import as problem or as normal import
12875: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
12876: unless ($importmode eq 'problem') {
12877: # Normal import
12878: if (defined($token->[2]->{'id'})) {
12879: $unikey.='_'.$token->[2]->{'id'};
12880: }
12881: }
12882: # Check metadata for imported file to
12883: # see if it contained parts
12884: if (grep(/^partorder$/,@libfilekeys)) {
12885: %currmetaentry = %metaentry;
12886: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
12887: $depthcount+1);
12888: %metaentry = %currmetaentry;
12889: undef(%currmetaentry);
12890: if ($libpartorder ne '') {
12891: $importedparts = 1;
12892: $importedpartids{$token->[2]->{'id'}}=$libpartorder;
12893: }
12894: }
12895: }
12896: if ($depthcount<20) {
12897: my $metadata =
12898: &metadata($uri,'keys',$toolsymb,$location,$unikey,
12899: $depthcount+1);
12900: foreach my $meta (split(',',$metadata)) {
12901: $metaentry{':'.$meta}=$metaentry{':'.$meta};
12902: $metathesekeys{$meta}=1;
12903: }
12904: }
12905: } else {
12906: #
12907: # Not importing, some other kind of non-package, non-library start tag
12908: #
12909: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
12910: if (defined($token->[2]->{'id'})) {
12911: $unikey.='_'.$token->[2]->{'id'};
12912: }
12913: if (defined($token->[2]->{'name'})) {
12914: $unikey.='_'.$token->[2]->{'name'};
12915: }
12916: $metathesekeys{$unikey}=1;
12917: foreach my $param (@{$token->[3]}) {
12918: $metaentry{':'.$unikey.'.'.$param} =
12919: $token->[2]->{$param};
12920: }
12921: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
12922: my $default=$metaentry{':'.$unikey.'.default'};
12923: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
12924: # only ws inside the tag, and not in default, so use default
12925: # as value
12926: $metaentry{':'.$unikey}=$default;
12927: } elsif ( $internaltext =~ /\S/ ) {
12928: # something interesting inside the tag
12929: $metaentry{':'.$unikey}=$internaltext;
12930: } else {
12931: # no interesting values, don't set a default
12932: }
12933: # end of not-a-package not-a-library import
12934: }
12935: # end of not-a-package start tag
12936: }
12937: # the next is the end of "start tag"
12938: }
12939: }
12940: my ($extension) = ($uri =~ /\.(\w+)$/);
12941: $extension = lc($extension);
12942: if ($extension eq 'htm') { $extension='html'; }
12943:
12944: foreach my $key (keys(%packagetab)) {
12945: #no specific packages #how's our extension
12946: if ($key!~/^extension_\Q$extension\E&/) { next; }
12947: &metadata_create_package_def($uri,$key,'extension_'.$extension,
12948: \%metathesekeys);
12949: }
12950:
12951: if (!exists($metaentry{':packages'})
12952: || $packagetab{"import_defaults&extension_$extension"}) {
12953: foreach my $key (keys(%packagetab)) {
12954: #no specific packages well let's get default then
12955: if ($key!~/^default&/) { next; }
12956: &metadata_create_package_def($uri,$key,'default',
12957: \%metathesekeys);
12958: }
12959: }
12960: # are there custom rights to evaluate
12961: if ($metaentry{':copyright'} eq 'custom') {
12962:
12963: #
12964: # Importing a rights file here
12965: #
12966: unless ($depthcount) {
12967: my $location=$metaentry{':customdistributionfile'};
12968: my $dir=$filename;
12969: $dir=~s|[^/]*$||;
12970: $location=&filelocation($dir,$location);
12971: my $rights_metadata =
12972: &metadata($uri,'keys',$toolsymb,$location,'_rights',
12973: $depthcount+1);
12974: foreach my $rights (split(',',$rights_metadata)) {
12975: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
12976: $metathesekeys{$rights}=1;
12977: }
12978: }
12979: }
12980: # uniqifiy package listing
12981: my %seen;
12982: my @uniq_packages =
12983: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
12984: $metaentry{':packages'} = join(',',@uniq_packages);
12985:
12986: if (($importedresponses) || ($importedparts)) {
12987: if ($importedparts) {
12988: # We had imported parts and need to rebuild partorder
12989: $metaentry{':partorder'}='';
12990: $metathesekeys{'partorder'}=1;
12991: }
12992: if ($importedresponses) {
12993: # We had imported responses and need to rebuil responseorder
12994: $metaentry{':responseorder'}='';
12995: $metathesekeys{'responseorder'}=1;
12996: }
12997: for (my $index=0;$index<$#origfiletagids;$index+=2) {
12998: my $origid = $origfiletagids[$index+1];
12999: if ($origfiletagids[$index] eq 'part') {
13000: # Original part, part of the problem
13001: if ($importedparts) {
13002: $metaentry{':partorder'}.=','.$origid;
13003: }
13004: } elsif ($origfiletagids[$index] eq 'import') {
13005: if ($importedparts) {
13006: # We have imported parts at this position
13007: if ($importedpartids{$origid} ne '') {
13008: $metaentry{':partorder'}.=','.$importedpartids{$origid};
13009: }
13010: }
13011: if ($importedresponses) {
13012: # We have imported responses at this position
13013: if ($importedrespids{$origid} ne '') {
13014: $metaentry{':responseorder'}.=','.$importedrespids{$origid};
13015: }
13016: }
13017: } else {
13018: # Original response item, part of the problem
13019: if ($importedresponses) {
13020: $metaentry{':responseorder'}.=','.$origid;
13021: }
13022: }
13023: }
13024: if ($importedparts) {
13025: $metaentry{':partorder'}=~s/^\,//;
13026: }
13027: if ($importedresponses) {
13028: $metaentry{':responseorder'}=~s/^\,//;
13029: }
13030: }
13031: $metaentry{':keys'} = join(',',keys(%metathesekeys));
13032: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
13033: $metaentry{':allpossiblekeys'}=join(',',keys(%metathesekeys));
13034: unless ($liburi) {
13035: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
13036: }
13037: # this is the end of "was not already recently cached
13038: }
13039: return $metaentry{':'.$what};
13040: }
13041:
13042: sub metadata_create_package_def {
13043: my ($uri,$key,$package,$metathesekeys)=@_;
13044: my ($pack,$name,$subp)=split(/\&/,$key);
13045: if ($subp eq 'default') { next; }
13046:
13047: if (defined($metaentry{':packages'})) {
13048: $metaentry{':packages'}.=','.$package;
13049: } else {
13050: $metaentry{':packages'}=$package;
13051: }
13052: my $value=$packagetab{$key};
13053: my $unikey;
13054: $unikey='parameter_0_'.$name;
13055: $metaentry{':'.$unikey.'.part'}=0;
13056: $$metathesekeys{$unikey}=1;
13057: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
13058: $metaentry{':'.$unikey.'.'.$subp}=$value;
13059: }
13060: if (defined($metaentry{':'.$unikey.'.default'})) {
13061: $metaentry{':'.$unikey}=
13062: $metaentry{':'.$unikey.'.default'};
13063: }
13064: }
13065:
13066: sub metadata_generate_part0 {
13067: my ($metadata,$metacache,$uri) = @_;
13068: my %allnames;
13069: foreach my $metakey (keys(%$metadata)) {
13070: if ($metakey=~/^parameter\_(.*)/) {
13071: my $part=$$metacache{':'.$metakey.'.part'};
13072: my $name=$$metacache{':'.$metakey.'.name'};
13073: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
13074: $allnames{$name}=$part;
13075: }
13076: }
13077: }
13078: foreach my $name (keys(%allnames)) {
13079: $$metadata{"parameter_0_$name"}=1;
13080: my $key=":parameter_0_$name";
13081: $$metacache{"$key.part"}='0';
13082: $$metacache{"$key.name"}=$name;
13083: $$metacache{"$key.type"}=$$metacache{':parameter_'.
13084: $allnames{$name}.'_'.$name.
13085: '.type'};
13086: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
13087: '.display'};
13088: my $expr='[Part: '.$allnames{$name}.']';
13089: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
13090: $$metacache{"$key.display"}=$olddis;
13091: }
13092: }
13093:
13094: # ------------------------------------------------------ Devalidate title cache
13095:
13096: sub devalidate_title_cache {
13097: my ($url)=@_;
13098: if (!$env{'request.course.id'}) { return; }
13099: my $symb=&symbread($url);
13100: if (!$symb) { return; }
13101: my $key=$env{'request.course.id'}."\0".$symb;
13102: &devalidate_cache_new('title',$key);
13103: }
13104:
13105: # ------------------------------------------------- Get the title of a course
13106:
13107: sub current_course_title {
13108: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
13109: }
13110: # ------------------------------------------------- Get the title of a resource
13111:
13112: sub gettitle {
13113: my $urlsymb=shift;
13114: my $symb=&symbread($urlsymb);
13115: if ($symb) {
13116: my $key=$env{'request.course.id'}."\0".$symb;
13117: my ($result,$cached)=&is_cached_new('title',$key);
13118: if (defined($cached)) {
13119: return $result;
13120: }
13121: my ($map,$resid,$url)=&decode_symb($symb);
13122: my $title='';
13123: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
13124: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
13125: } else {
13126: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
13127: &GDBM_READER(),0640)) {
13128: my $mapid=$bighash{'map_pc_'.&clutter($map)};
13129: $title=$bighash{'title_'.$mapid.'.'.$resid};
13130: untie(%bighash);
13131: }
13132: }
13133: $title=~s/\&colon\;/\:/gs;
13134: if ($title) {
13135: # Remember both $symb and $title for dynamic metadata
13136: $accesshash{$symb.'___crstitle'}=$title;
13137: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
13138: # Cache this title and then return it
13139: return &do_cache_new('title',$key,$title,600);
13140: }
13141: $urlsymb=$url;
13142: }
13143: my $title=&metadata($urlsymb,'title');
13144: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
13145: return $title;
13146: }
13147:
13148: sub get_slot {
13149: my ($which,$cnum,$cdom)=@_;
13150: if (!$cnum || !$cdom) {
13151: (undef,my $courseid)=&whichuser();
13152: $cdom=$env{'course.'.$courseid.'.domain'};
13153: $cnum=$env{'course.'.$courseid.'.num'};
13154: }
13155: my $key=join("\0",'slots',$cdom,$cnum,$which);
13156: my %slotinfo;
13157: if (exists($remembered{$key})) {
13158: $slotinfo{$which} = $remembered{$key};
13159: } else {
13160: %slotinfo=&get('slots',[$which],$cdom,$cnum);
13161: &Apache::lonhomework::showhash(%slotinfo);
13162: my ($tmp)=keys(%slotinfo);
13163: if ($tmp=~/^error:/) { return (); }
13164: $remembered{$key} = $slotinfo{$which};
13165: }
13166: if (ref($slotinfo{$which}) eq 'HASH') {
13167: return %{$slotinfo{$which}};
13168: }
13169: return $slotinfo{$which};
13170: }
13171:
13172: sub get_reservable_slots {
13173: my ($cnum,$cdom,$uname,$udom) = @_;
13174: my $now = time;
13175: my $reservable_info;
13176: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
13177: if (exists($remembered{$key})) {
13178: $reservable_info = $remembered{$key};
13179: } else {
13180: my %resv;
13181: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
13182: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
13183: $reservable_info = \%resv;
13184: $remembered{$key} = $reservable_info;
13185: }
13186: return $reservable_info;
13187: }
13188:
13189: sub get_course_slots {
13190: my ($cnum,$cdom) = @_;
13191: my $hashid=$cnum.':'.$cdom;
13192: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
13193: if (defined($cached)) {
13194: if (ref($result) eq 'HASH') {
13195: return %{$result};
13196: }
13197: } else {
13198: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
13199: my ($tmp) = keys(%slots);
13200: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
13201: &do_cache_new('allslots',$hashid,\%slots,600);
13202: return %slots;
13203: }
13204: }
13205: return;
13206: }
13207:
13208: sub devalidate_slots_cache {
13209: my ($cnum,$cdom)=@_;
13210: my $hashid=$cnum.':'.$cdom;
13211: &devalidate_cache_new('allslots',$hashid);
13212: }
13213:
13214: sub get_coursechange {
13215: my ($cdom,$cnum) = @_;
13216: if ($cdom eq '' || $cnum eq '') {
13217: return unless ($env{'request.course.id'});
13218: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
13219: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
13220: }
13221: my $hashid=$cdom.'_'.$cnum;
13222: my ($change,$cached)=&is_cached_new('crschange',$hashid);
13223: if ((defined($cached)) && ($change ne '')) {
13224: return $change;
13225: } else {
13226: my %crshash;
13227: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
13228: if ($crshash{'internal.contentchange'} eq '') {
13229: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
13230: if ($change eq '') {
13231: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
13232: $change = $crshash{'internal.created'};
13233: }
13234: } else {
13235: $change = $crshash{'internal.contentchange'};
13236: }
13237: my $cachetime = 600;
13238: &do_cache_new('crschange',$hashid,$change,$cachetime);
13239: }
13240: return $change;
13241: }
13242:
13243: sub devalidate_coursechange_cache {
13244: my ($cnum,$cdom)=@_;
13245: my $hashid=$cnum.':'.$cdom;
13246: &devalidate_cache_new('crschange',$hashid);
13247: }
13248:
13249: # ------------------------------------------------- Update symbolic store links
13250:
13251: sub symblist {
13252: my ($mapname,%newhash)=@_;
13253: $mapname=&deversion(&declutter($mapname));
13254: my %hash;
13255: if (($env{'request.course.fn'}) && (%newhash)) {
13256: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
13257: &GDBM_WRCREAT(),0640)) {
13258: foreach my $url (keys(%newhash)) {
13259: next if ($url eq 'last_known'
13260: && $env{'form.no_update_last_known'});
13261: $hash{declutter($url)}=&encode_symb($mapname,
13262: $newhash{$url}->[1],
13263: $newhash{$url}->[0]);
13264: }
13265: if (untie(%hash)) {
13266: return 'ok';
13267: }
13268: }
13269: }
13270: return 'error';
13271: }
13272:
13273: # --------------------------------------------------------------- Verify a symb
13274:
13275: sub symbverify {
13276: my ($symb,$thisurl,$encstate)=@_;
13277: my $thisfn=$thisurl;
13278: $thisfn=&declutter($thisfn);
13279: # direct jump to resource in page or to a sequence - will construct own symbs
13280: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
13281: # check URL part
13282: my ($map,$resid,$url)=&decode_symb($symb);
13283:
13284: unless ($url eq $thisfn) { return 0; }
13285:
13286: $symb=&symbclean($symb);
13287: $thisurl=&deversion($thisurl);
13288: $thisfn=&deversion($thisfn);
13289:
13290: my %bighash;
13291: my $okay=0;
13292:
13293: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
13294: &GDBM_READER(),0640)) {
13295: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
13296: $thisurl =~ s/\?.+$//;
13297: if ($map =~ m{^uploaded/.+\.page$}) {
13298: $thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
13299: $thisurl =~ s{^\Qhttp://https://\E}{https://};
13300: }
13301: }
13302: my $ids;
13303: if ($map =~ m{^uploaded/.+\.page$}) {
13304: $ids=$bighash{'ids_'.&clutter_with_no_wrapper($thisurl)};
13305: } else {
13306: $ids=$bighash{'ids_'.&clutter($thisurl)};
13307: }
13308: unless ($ids) {
13309: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
13310: $ids=$bighash{$idkey};
13311: }
13312: if ($ids) {
13313: # ------------------------------------------------------------------- Has ID(s)
13314: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
13315: $symb =~ s/\?.+$//;
13316: }
13317: foreach my $id (split(/\,/,$ids)) {
13318: my ($mapid,$resid)=split(/\./,$id);
13319: if (
13320: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
13321: eq $symb) {
13322: if (ref($encstate)) {
13323: $$encstate = $bighash{'encrypted_'.$id};
13324: }
13325: if (($env{'request.role.adv'}) ||
13326: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
13327: ($thisurl eq '/adm/navmaps')) {
13328: $okay=1;
13329: last;
13330: }
13331: }
13332: }
13333: }
13334: untie(%bighash);
13335: }
13336: return $okay;
13337: }
13338:
13339: # --------------------------------------------------------------- Clean-up symb
13340:
13341: sub symbclean {
13342: my $symb=shift;
13343: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
13344: # remove version from map
13345: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
13346:
13347: # remove version from URL
13348: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
13349:
13350: # remove wrapper
13351:
13352: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
13353: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
13354: return $symb;
13355: }
13356:
13357: # ---------------------------------------------- Split symb to find map and url
13358:
13359: sub encode_symb {
13360: my ($map,$resid,$url)=@_;
13361: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
13362: }
13363:
13364: sub decode_symb {
13365: my $symb=shift;
13366: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
13367: my ($map,$resid,$url)=split(/___/,$symb);
13368: return (&fixversion($map),$resid,&fixversion($url));
13369: }
13370:
13371: sub fixversion {
13372: my $fn=shift;
13373: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
13374: my %bighash;
13375: my $uri=&clutter($fn);
13376: my $key=$env{'request.course.id'}.'_'.$uri;
13377: # is this cached?
13378: my ($result,$cached)=&is_cached_new('courseresversion',$key);
13379: if (defined($cached)) { return $result; }
13380: # unfortunately not cached, or expired
13381: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
13382: &GDBM_READER(),0640)) {
13383: if ($bighash{'version_'.$uri}) {
13384: my $version=$bighash{'version_'.$uri};
13385: unless (($version eq 'mostrecent') ||
13386: ($version==&getversion($uri))) {
13387: $uri=~s/\.(\w+)$/\.$version\.$1/;
13388: }
13389: }
13390: untie %bighash;
13391: }
13392: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
13393: }
13394:
13395: sub deversion {
13396: my $url=shift;
13397: $url=~s/\.\d+\.(\w+)$/\.$1/;
13398: return $url;
13399: }
13400:
13401: # ------------------------------------------------------ Return symb list entry
13402:
13403: sub symbread {
13404: my ($thisfn,$donotrecurse,$ignorecachednull,$checkforblock,$possibles,
13405: $ignoresymbdb,$noenccheck)=@_;
13406: my $cache_str='request.symbread.cached.'.$thisfn;
13407: if (defined($env{$cache_str})) {
13408: unless (ref($possibles) eq 'HASH') {
13409: if ($ignorecachednull) {
13410: return $env{$cache_str} unless ($env{$cache_str} eq '');
13411: } else {
13412: return $env{$cache_str};
13413: }
13414: }
13415: }
13416: # no filename provided? try from environment
13417: unless ($thisfn) {
13418: if ($env{'request.symb'}) {
13419: return $env{$cache_str}=&symbclean($env{'request.symb'});
13420: }
13421: $thisfn=$env{'request.filename'};
13422: }
13423: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
13424: # is that filename actually a symb? Verify, clean, and return
13425: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
13426: if (&symbverify($thisfn,$1)) {
13427: return $env{$cache_str}=&symbclean($thisfn);
13428: }
13429: }
13430: $thisfn=declutter($thisfn);
13431: my %hash;
13432: my %bighash;
13433: my $syval='';
13434: if (($env{'request.course.fn'}) && ($thisfn)) {
13435: my $targetfn = $thisfn;
13436: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
13437: $targetfn = 'adm/wrapper/'.$thisfn;
13438: }
13439: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
13440: $targetfn=$1;
13441: }
13442: unless ($ignoresymbdb) {
13443: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
13444: &GDBM_READER(),0640)) {
13445: $syval=$hash{$targetfn};
13446: untie(%hash);
13447: }
13448: if ($syval && $checkforblock) {
13449: my @blockers = &has_comm_blocking('bre',$syval,$thisfn,$ignoresymbdb,$noenccheck);
13450: if (@blockers) {
13451: $syval='';
13452: }
13453: }
13454: }
13455: # ---------------------------------------------------------- There was an entry
13456: if ($syval) {
13457: #unless ($syval=~/\_\d+$/) {
13458: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
13459: #&appenv({'request.ambiguous' => $thisfn});
13460: #return $env{$cache_str}='';
13461: #}
13462: #$syval.=$1;
13463: #}
13464: } else {
13465: # ------------------------------------------------------- Was not in symb table
13466: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
13467: &GDBM_READER(),0640)) {
13468: # ---------------------------------------------- Get ID(s) for current resource
13469: my $ids=$bighash{'ids_'.&clutter($thisfn)};
13470: unless ($ids) {
13471: $ids=$bighash{'ids_/'.$thisfn};
13472: }
13473: unless ($ids) {
13474: # alias?
13475: $ids=$bighash{'mapalias_'.$thisfn};
13476: }
13477: if ($ids) {
13478: # ------------------------------------------------------------------- Has ID(s)
13479: my @possibilities=split(/\,/,$ids);
13480: if ($#possibilities==0) {
13481: # ----------------------------------------------- There is only one possibility
13482: my ($mapid,$resid)=split(/\./,$ids);
13483: $syval=&encode_symb($bighash{'map_id_'.$mapid},
13484: $resid,$thisfn);
13485: if (ref($possibles) eq 'HASH') {
13486: unless ($bighash{'randomout_'.$ids} || $env{'request.role.adv'}) {
13487: $possibles->{$syval} = 1;
13488: }
13489: }
13490: if ($checkforblock) {
13491: unless ($bighash{'randomout_'.$ids} || $env{'request.role.adv'}) {
13492: my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids},'',$noenccheck);
13493: if (@blockers) {
13494: $syval = '';
13495: untie(%bighash);
13496: return $env{$cache_str}='';
13497: }
13498: }
13499: }
13500: } elsif ((!$donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
13501: # ------------------------------------------ There is more than one possibility
13502: my $realpossible=0;
13503: foreach my $id (@possibilities) {
13504: my $file=$bighash{'src_'.$id};
13505: my $canaccess;
13506: if (($donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
13507: $canaccess = 1;
13508: } else {
13509: $canaccess = &allowed('bre',$file);
13510: }
13511: if ($canaccess) {
13512: my ($mapid,$resid)=split(/\./,$id);
13513: if ($bighash{'map_type_'.$mapid} ne 'page') {
13514: my $poss_syval=&encode_symb($bighash{'map_id_'.$mapid},
13515: $resid,$thisfn);
13516: next if ($bighash{'randomout_'.$id} && !$env{'request.role.adv'});
13517: next unless (($noenccheck) || ($bighash{'encrypted_'.$id} eq $env{'request.enc'}));
13518: if ($checkforblock) {
13519: my @blockers = &has_comm_blocking('bre',$poss_syval,$file,'',$noenccheck);
13520: if (@blockers > 0) {
13521: $syval = '';
13522: } else {
13523: $syval = $poss_syval;
13524: $realpossible++;
13525: }
13526: } else {
13527: $syval = $poss_syval;
13528: $realpossible++;
13529: }
13530: if ($syval) {
13531: if (ref($possibles) eq 'HASH') {
13532: $possibles->{$syval} = 1;
13533: }
13534: }
13535: }
13536: }
13537: }
13538: if ($realpossible!=1) { $syval=''; }
13539: } else {
13540: $syval='';
13541: }
13542: }
13543: untie(%bighash);
13544: }
13545: }
13546: if ($syval) {
13547: return $env{$cache_str}=$syval;
13548: }
13549: }
13550: &appenv({'request.ambiguous' => $thisfn});
13551: return $env{$cache_str}='';
13552: }
13553:
13554: # ---------------------------------------------------------- Return random seed
13555:
13556: sub numval {
13557: my $txt=shift;
13558: $txt=~tr/A-J/0-9/;
13559: $txt=~tr/a-j/0-9/;
13560: $txt=~tr/K-T/0-9/;
13561: $txt=~tr/k-t/0-9/;
13562: $txt=~tr/U-Z/0-5/;
13563: $txt=~tr/u-z/0-5/;
13564: $txt=~s/\D//g;
13565: if ($_64bit) { if ($txt > 2**32) { return -1; } }
13566: return int($txt);
13567: }
13568:
13569: sub numval2 {
13570: my $txt=shift;
13571: $txt=~tr/A-J/0-9/;
13572: $txt=~tr/a-j/0-9/;
13573: $txt=~tr/K-T/0-9/;
13574: $txt=~tr/k-t/0-9/;
13575: $txt=~tr/U-Z/0-5/;
13576: $txt=~tr/u-z/0-5/;
13577: $txt=~s/\D//g;
13578: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
13579: my $total;
13580: foreach my $val (@txts) { $total+=$val; }
13581: if ($_64bit) { if ($total > 2**32) { return -1; } }
13582: return int($total);
13583: }
13584:
13585: sub numval3 {
13586: use integer;
13587: my $txt=shift;
13588: $txt=~tr/A-J/0-9/;
13589: $txt=~tr/a-j/0-9/;
13590: $txt=~tr/K-T/0-9/;
13591: $txt=~tr/k-t/0-9/;
13592: $txt=~tr/U-Z/0-5/;
13593: $txt=~tr/u-z/0-5/;
13594: $txt=~s/\D//g;
13595: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
13596: my $total;
13597: foreach my $val (@txts) { $total+=$val; }
13598: if ($_64bit) { $total=(($total<<32)>>32); }
13599: return $total;
13600: }
13601:
13602: sub digest {
13603: my ($data)=@_;
13604: my $digest=&Digest::MD5::md5($data);
13605: my ($a,$b,$c,$d)=unpack("iiii",$digest);
13606: my ($e,$f);
13607: {
13608: use integer;
13609: $e=($a+$b);
13610: $f=($c+$d);
13611: if ($_64bit) {
13612: $e=(($e<<32)>>32);
13613: $f=(($f<<32)>>32);
13614: }
13615: }
13616: if (wantarray) {
13617: return ($e,$f);
13618: } else {
13619: my $g;
13620: {
13621: use integer;
13622: $g=($e+$f);
13623: if ($_64bit) {
13624: $g=(($g<<32)>>32);
13625: }
13626: }
13627: return $g;
13628: }
13629: }
13630:
13631: sub latest_rnd_algorithm_id {
13632: return '64bit5';
13633: }
13634:
13635: sub get_rand_alg {
13636: my ($courseid)=@_;
13637: if (!$courseid) { $courseid=(&whichuser())[1]; }
13638: if ($courseid) {
13639: return $env{"course.$courseid.rndseed"};
13640: }
13641: return &latest_rnd_algorithm_id();
13642: }
13643:
13644: sub validCODE {
13645: my ($CODE)=@_;
13646: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
13647: return 0;
13648: }
13649:
13650: sub getCODE {
13651: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
13652: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
13653: defined($Apache::lonhomework::parsing_a_task) ) &&
13654: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
13655: return $Apache::lonhomework::history{'resource.CODE'};
13656: }
13657: return undef;
13658: }
13659: #
13660: # Determines the random seed for a specific context:
13661: #
13662: # parameters:
13663: # symb - in course context the symb for the seed.
13664: # course_id - The course id of the form domain_coursenum.
13665: # domain - Domain for the user.
13666: # course - Course for the user.
13667: # cenv - environment of the course.
13668: #
13669: # NOTE:
13670: # All parameters are picked out of the environment if missing
13671: # or not defined.
13672: # If a symb cannot be determined the current time is used instead.
13673: #
13674: # For a given well defined symb, courside, domain, username,
13675: # and course environment, the seed is reproducible.
13676: #
13677: sub rndseed {
13678: my ($symb,$courseid,$domain,$username, $cenv)=@_;
13679: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
13680: if (!defined($symb)) {
13681: unless ($symb=$wsymb) { return time; }
13682: }
13683: if (!defined $courseid) {
13684: $courseid=$wcourseid;
13685: }
13686: if (!defined $domain) { $domain=$wdomain; }
13687: if (!defined $username) { $username=$wusername }
13688:
13689: my $which;
13690: if (defined($cenv->{'rndseed'})) {
13691: $which = $cenv->{'rndseed'};
13692: } else {
13693: $which =&get_rand_alg($courseid);
13694: }
13695: if (defined(&getCODE())) {
13696:
13697: if ($which eq '64bit5') {
13698: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
13699: } elsif ($which eq '64bit4') {
13700: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
13701: } else {
13702: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
13703: }
13704: } elsif ($which eq '64bit5') {
13705: return &rndseed_64bit5($symb,$courseid,$domain,$username);
13706: } elsif ($which eq '64bit4') {
13707: return &rndseed_64bit4($symb,$courseid,$domain,$username);
13708: } elsif ($which eq '64bit3') {
13709: return &rndseed_64bit3($symb,$courseid,$domain,$username);
13710: } elsif ($which eq '64bit2') {
13711: return &rndseed_64bit2($symb,$courseid,$domain,$username);
13712: } elsif ($which eq '64bit') {
13713: return &rndseed_64bit($symb,$courseid,$domain,$username);
13714: }
13715: return &rndseed_32bit($symb,$courseid,$domain,$username);
13716: }
13717:
13718: sub rndseed_32bit {
13719: my ($symb,$courseid,$domain,$username)=@_;
13720: {
13721: use integer;
13722: my $symbchck=unpack("%32C*",$symb) << 27;
13723: my $symbseed=numval($symb) << 22;
13724: my $namechck=unpack("%32C*",$username) << 17;
13725: my $nameseed=numval($username) << 12;
13726: my $domainseed=unpack("%32C*",$domain) << 7;
13727: my $courseseed=unpack("%32C*",$courseid);
13728: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
13729: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13730: #&logthis("rndseed :$num:$symb");
13731: if ($_64bit) { $num=(($num<<32)>>32); }
13732: return $num;
13733: }
13734: }
13735:
13736: sub rndseed_64bit {
13737: my ($symb,$courseid,$domain,$username)=@_;
13738: {
13739: use integer;
13740: my $symbchck=unpack("%32S*",$symb) << 21;
13741: my $symbseed=numval($symb) << 10;
13742: my $namechck=unpack("%32S*",$username);
13743:
13744: my $nameseed=numval($username) << 21;
13745: my $domainseed=unpack("%32S*",$domain) << 10;
13746: my $courseseed=unpack("%32S*",$courseid);
13747:
13748: my $num1=$symbchck+$symbseed+$namechck;
13749: my $num2=$nameseed+$domainseed+$courseseed;
13750: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13751: #&logthis("rndseed :$num:$symb");
13752: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13753: return "$num1,$num2";
13754: }
13755: }
13756:
13757: sub rndseed_64bit2 {
13758: my ($symb,$courseid,$domain,$username)=@_;
13759: {
13760: use integer;
13761: # strings need to be an even # of cahracters long, it it is odd the
13762: # last characters gets thrown away
13763: my $symbchck=unpack("%32S*",$symb.' ') << 21;
13764: my $symbseed=numval($symb) << 10;
13765: my $namechck=unpack("%32S*",$username.' ');
13766:
13767: my $nameseed=numval($username) << 21;
13768: my $domainseed=unpack("%32S*",$domain.' ') << 10;
13769: my $courseseed=unpack("%32S*",$courseid.' ');
13770:
13771: my $num1=$symbchck+$symbseed+$namechck;
13772: my $num2=$nameseed+$domainseed+$courseseed;
13773: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13774: #&logthis("rndseed :$num:$symb");
13775: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13776: return "$num1,$num2";
13777: }
13778: }
13779:
13780: sub rndseed_64bit3 {
13781: my ($symb,$courseid,$domain,$username)=@_;
13782: {
13783: use integer;
13784: # strings need to be an even # of cahracters long, it it is odd the
13785: # last characters gets thrown away
13786: my $symbchck=unpack("%32S*",$symb.' ') << 21;
13787: my $symbseed=numval2($symb) << 10;
13788: my $namechck=unpack("%32S*",$username.' ');
13789:
13790: my $nameseed=numval2($username) << 21;
13791: my $domainseed=unpack("%32S*",$domain.' ') << 10;
13792: my $courseseed=unpack("%32S*",$courseid.' ');
13793:
13794: my $num1=$symbchck+$symbseed+$namechck;
13795: my $num2=$nameseed+$domainseed+$courseseed;
13796: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13797: #&logthis("rndseed :$num1:$num2:$_64bit");
13798: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13799:
13800: return "$num1:$num2";
13801: }
13802: }
13803:
13804: sub rndseed_64bit4 {
13805: my ($symb,$courseid,$domain,$username)=@_;
13806: {
13807: use integer;
13808: # strings need to be an even # of cahracters long, it it is odd the
13809: # last characters gets thrown away
13810: my $symbchck=unpack("%32S*",$symb.' ') << 21;
13811: my $symbseed=numval3($symb) << 10;
13812: my $namechck=unpack("%32S*",$username.' ');
13813:
13814: my $nameseed=numval3($username) << 21;
13815: my $domainseed=unpack("%32S*",$domain.' ') << 10;
13816: my $courseseed=unpack("%32S*",$courseid.' ');
13817:
13818: my $num1=$symbchck+$symbseed+$namechck;
13819: my $num2=$nameseed+$domainseed+$courseseed;
13820: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13821: #&logthis("rndseed :$num1:$num2:$_64bit");
13822: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13823:
13824: return "$num1:$num2";
13825: }
13826: }
13827:
13828: sub rndseed_64bit5 {
13829: my ($symb,$courseid,$domain,$username)=@_;
13830: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
13831: return "$num1:$num2";
13832: }
13833:
13834: sub rndseed_CODE_64bit {
13835: my ($symb,$courseid,$domain,$username)=@_;
13836: {
13837: use integer;
13838: my $symbchck=unpack("%32S*",$symb.' ') << 16;
13839: my $symbseed=numval2($symb);
13840: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
13841: my $CODEseed=numval(&getCODE());
13842: my $courseseed=unpack("%32S*",$courseid.' ');
13843: my $num1=$symbseed+$CODEchck;
13844: my $num2=$CODEseed+$courseseed+$symbchck;
13845: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
13846: #&logthis("rndseed :$num1:$num2:$symb");
13847: if ($_64bit) { $num1=(($num1<<32)>>32); }
13848: if ($_64bit) { $num2=(($num2<<32)>>32); }
13849: return "$num1:$num2";
13850: }
13851: }
13852:
13853: sub rndseed_CODE_64bit4 {
13854: my ($symb,$courseid,$domain,$username)=@_;
13855: {
13856: use integer;
13857: my $symbchck=unpack("%32S*",$symb.' ') << 16;
13858: my $symbseed=numval3($symb);
13859: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
13860: my $CODEseed=numval3(&getCODE());
13861: my $courseseed=unpack("%32S*",$courseid.' ');
13862: my $num1=$symbseed+$CODEchck;
13863: my $num2=$CODEseed+$courseseed+$symbchck;
13864: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
13865: #&logthis("rndseed :$num1:$num2:$symb");
13866: if ($_64bit) { $num1=(($num1<<32)>>32); }
13867: if ($_64bit) { $num2=(($num2<<32)>>32); }
13868: return "$num1:$num2";
13869: }
13870: }
13871:
13872: sub rndseed_CODE_64bit5 {
13873: my ($symb,$courseid,$domain,$username)=@_;
13874: my $code = &getCODE();
13875: my ($num1,$num2)=&digest("$symb,$courseid,$code");
13876: return "$num1:$num2";
13877: }
13878:
13879: sub setup_random_from_rndseed {
13880: my ($rndseed)=@_;
13881: if ($rndseed =~/([,:])/) {
13882: my ($num1,$num2) = map { abs($_); } (split(/[,:]/,$rndseed));
13883: if ((!$num1) || (!$num2) || ($num1 > 2147483562) || ($num2 > 2147483398)) {
13884: &Math::Random::random_set_seed_from_phrase($rndseed);
13885: } else {
13886: &Math::Random::random_set_seed($num1,$num2);
13887: }
13888: } else {
13889: &Math::Random::random_set_seed_from_phrase($rndseed);
13890: }
13891: }
13892:
13893: sub latest_receipt_algorithm_id {
13894: return 'receipt3';
13895: }
13896:
13897: sub recunique {
13898: my $fucourseid=shift;
13899: my $unique;
13900: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
13901: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
13902: $unique=$env{"course.$fucourseid.internal.encseed"};
13903: } else {
13904: $unique=$perlvar{'lonReceipt'};
13905: }
13906: return unpack("%32C*",$unique);
13907: }
13908:
13909: sub recprefix {
13910: my $fucourseid=shift;
13911: my $prefix;
13912: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
13913: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
13914: $prefix=$env{"course.$fucourseid.internal.encpref"};
13915: } else {
13916: $prefix=$perlvar{'lonHostID'};
13917: }
13918: return unpack("%32C*",$prefix);
13919: }
13920:
13921: sub ireceipt {
13922: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
13923:
13924: my $return =&recprefix($fucourseid).'-';
13925:
13926: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
13927: $env{'request.state'} eq 'construct') {
13928: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
13929: return $return;
13930: }
13931:
13932: my $cuname=unpack("%32C*",$funame);
13933: my $cudom=unpack("%32C*",$fudom);
13934: my $cucourseid=unpack("%32C*",$fucourseid);
13935: my $cusymb=unpack("%32C*",$fusymb);
13936: my $cunique=&recunique($fucourseid);
13937: my $cpart=unpack("%32S*",$part);
13938: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
13939:
13940: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
13941:
13942: $return.= ($cunique%$cuname+
13943: $cunique%$cudom+
13944: $cusymb%$cuname+
13945: $cusymb%$cudom+
13946: $cucourseid%$cuname+
13947: $cucourseid%$cudom+
13948: $cpart%$cuname+
13949: $cpart%$cudom);
13950: } else {
13951: $return.= ($cunique%$cuname+
13952: $cunique%$cudom+
13953: $cusymb%$cuname+
13954: $cusymb%$cudom+
13955: $cucourseid%$cuname+
13956: $cucourseid%$cudom);
13957: }
13958: return $return;
13959: }
13960:
13961: sub receipt {
13962: my ($part)=@_;
13963: my ($symb,$courseid,$domain,$name) = &whichuser();
13964: return &ireceipt($name,$domain,$courseid,$symb,$part);
13965: }
13966:
13967: sub whichuser {
13968: my ($passedsymb)=@_;
13969: my ($symb,$courseid,$domain,$name,$publicuser);
13970: if (defined($env{'form.grade_symb'})) {
13971: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
13972: my $allowed=&allowed('vgr',$tmp_courseid);
13973: if (!$allowed &&
13974: exists($env{'request.course.sec'}) &&
13975: $env{'request.course.sec'} !~ /^\s*$/) {
13976: $allowed=&allowed('vgr',$tmp_courseid.
13977: '/'.$env{'request.course.sec'});
13978: }
13979: if ($allowed) {
13980: ($symb)=&get_env_multiple('form.grade_symb');
13981: $courseid=$tmp_courseid;
13982: ($domain)=&get_env_multiple('form.grade_domain');
13983: ($name)=&get_env_multiple('form.grade_username');
13984: return ($symb,$courseid,$domain,$name,$publicuser);
13985: }
13986: }
13987: if (!$passedsymb) {
13988: $symb=&symbread();
13989: } else {
13990: $symb=$passedsymb;
13991: }
13992: $courseid=$env{'request.course.id'};
13993: $domain=$env{'user.domain'};
13994: $name=$env{'user.name'};
13995: if ($name eq 'public' && $domain eq 'public') {
13996: if (!defined($env{'form.username'})) {
13997: $env{'form.username'}.=time.rand(10000000);
13998: }
13999: $name.=$env{'form.username'};
14000: }
14001: return ($symb,$courseid,$domain,$name,$publicuser);
14002:
14003: }
14004:
14005: # ------------------------------------------------------------ Serves up a file
14006: # returns either the contents of the file or
14007: # -1 if the file doesn't exist
14008: #
14009: # if the target is a file that was uploaded via DOCS,
14010: # a check will be made to see if a current copy exists on the local server,
14011: # if it does this will be served, otherwise a copy will be retrieved from
14012: # the home server for the course and stored in /home/httpd/html/userfiles on
14013: # the local server.
14014:
14015: sub getfile {
14016: my ($file) = @_;
14017: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
14018: &repcopy($file);
14019: return &readfile($file);
14020: }
14021:
14022: sub repcopy_userfile {
14023: my ($file)=@_;
14024: my $londocroot = $perlvar{'lonDocRoot'};
14025: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
14026: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
14027: my ($cdom,$cnum,$filename) =
14028: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
14029: my $uri="/uploaded/$cdom/$cnum/$filename";
14030: if (-e "$file") {
14031: # we already have a local copy, check it out
14032: my @fileinfo = stat($file);
14033: my $rtncode;
14034: my $info;
14035: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
14036: if ($lwpresp ne 'ok') {
14037: # there is no such file anymore, even though we had a local copy
14038: if ($rtncode eq '404') {
14039: unlink($file);
14040: }
14041: return -1;
14042: }
14043: if ($info < $fileinfo[9]) {
14044: # nice, the file we have is up-to-date, just say okay
14045: return 'ok';
14046: } else {
14047: # the file is outdated, get rid of it
14048: unlink($file);
14049: }
14050: }
14051: # one way or the other, at this point, we don't have the file
14052: # construct the correct path for the file
14053: my @parts = ($cdom,$cnum);
14054: if ($filename =~ m|^(.+)/[^/]+$|) {
14055: push @parts, split(/\//,$1);
14056: }
14057: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
14058: foreach my $part (@parts) {
14059: $path .= '/'.$part;
14060: if (!-e $path) {
14061: mkdir($path,0770);
14062: }
14063: }
14064: # now the path exists for sure
14065: # get a user agent
14066: my $transferfile=$file.'.in.transfer';
14067: # FIXME: this should flock
14068: if (-e $transferfile) { return 'ok'; }
14069: my $request;
14070: $uri=~s/^\///;
14071: my $homeserver = &homeserver($cnum,$cdom);
14072: my $hostname = &hostname($homeserver);
14073: my $protocol = $protocol{$homeserver};
14074: $protocol = 'http' if ($protocol ne 'https');
14075: $request=new HTTP::Request('GET',$protocol.'://'.$hostname.'/raw/'.$uri);
14076: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,$transferfile,\%perlvar,'',0,1);
14077: # did it work?
14078: if ($response->is_error()) {
14079: unlink($transferfile);
14080: &logthis("Userfile repcopy failed for $uri");
14081: return -1;
14082: }
14083: # worked, rename the transfer file
14084: rename($transferfile,$file);
14085: return 'ok';
14086: }
14087:
14088: sub tokenwrapper {
14089: my $uri=shift;
14090: $uri=~s|^https?\://([^/]+)||;
14091: $uri=~s|^/||;
14092: $env{'user.environment'}=~/\/([^\/]+)\.id/;
14093: my $token=$1;
14094: my (undef,$udom,$uname,$file)=split('/',$uri,4);
14095: if ($udom && $uname && $file) {
14096: $file=~s|(\?\.*)*$||;
14097: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
14098: my $homeserver = &homeserver($uname,$udom);
14099: my $hostname = &hostname($homeserver);
14100: my $protocol = $protocol{$homeserver};
14101: $protocol = 'http' if ($protocol ne 'https');
14102: return $protocol.'://'.$hostname.'/'.$uri.
14103: (($uri=~/\?/)?'&':'?').'token='.$token.
14104: '&tokenissued='.$perlvar{'lonHostID'};
14105: } else {
14106: return '/adm/notfound.html';
14107: }
14108: }
14109:
14110: # call with reqtype HEAD: get last modification time
14111: # call with reqtype GET: get the file contents
14112: # Do not call this with reqtype GET for large files! It loads everything into memory
14113: #
14114: sub getuploaded {
14115: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
14116: $uri=~s/^\///;
14117: my $homeserver = &homeserver($cnum,$cdom);
14118: my $hostname = &hostname($homeserver);
14119: my $protocol = $protocol{$homeserver};
14120: $protocol = 'http' if ($protocol ne 'https');
14121: $uri = $protocol.'://'.$hostname.'/raw/'.$uri;
14122: my $request=new HTTP::Request($reqtype,$uri);
14123: my $response=&LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,'',0,1);
14124: $$rtncode = $response->code;
14125: if (! $response->is_success()) {
14126: return 'failed';
14127: }
14128: if ($reqtype eq 'HEAD') {
14129: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
14130: } elsif ($reqtype eq 'GET') {
14131: $$info = $response->content;
14132: }
14133: return 'ok';
14134: }
14135:
14136: sub readfile {
14137: my $file = shift;
14138: if ( (! -e $file ) || ($file eq '') ) { return -1; };
14139: my $fh;
14140: open($fh,"<",$file);
14141: my $a='';
14142: while (my $line = <$fh>) { $a .= $line; }
14143: return $a;
14144: }
14145:
14146: sub filelocation {
14147: my ($dir,$file) = @_;
14148: my $location;
14149: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
14150:
14151: if ($file =~ m-^/adm/-) {
14152: $file=~s-^/adm/wrapper/-/-;
14153: $file=~s-^/adm/coursedocs/showdoc/-/-;
14154: }
14155:
14156: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
14157: $location = $file;
14158: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
14159: my ($udom,$uname,$filename)=
14160: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
14161: my $home=&homeserver($uname,$udom);
14162: my $is_me=0;
14163: my @ids=¤t_machine_ids();
14164: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
14165: if ($is_me) {
14166: $location=propath($udom,$uname).'/userfiles/'.$filename;
14167: } else {
14168: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
14169: $udom.'/'.$uname.'/'.$filename;
14170: }
14171: } elsif ($file =~ m-^/adm/-) {
14172: $location = $perlvar{'lonDocRoot'}.'/'.$file;
14173: } else {
14174: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
14175: $file=~s:^/(res|priv)/:/:;
14176: my $space=$1;
14177: if ( !( $file =~ m:^/:) ) {
14178: $location = $dir. '/'.$file;
14179: } else {
14180: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
14181: }
14182: }
14183: $location=~s://+:/:g; # remove duplicate /
14184: while ($location=~m{/\.\./}) {
14185: if ($location =~ m{/[^/]+/\.\./}) {
14186: $location=~ s{/[^/]+/\.\./}{/}g;
14187: } else {
14188: $location=~ s{/\.\./}{/}g;
14189: }
14190: } #remove dir/..
14191: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
14192: return $location;
14193: }
14194:
14195: sub hreflocation {
14196: my ($dir,$file)=@_;
14197: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
14198: $file=filelocation($dir,$file);
14199: } elsif ($file=~m-^/adm/-) {
14200: $file=~s-^/adm/wrapper/-/-;
14201: $file=~s-^/adm/coursedocs/showdoc/-/-;
14202: }
14203: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
14204: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
14205: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
14206: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
14207: {/uploaded/$1/$2/}x;
14208: }
14209: if ($file=~ m{^/userfiles/}) {
14210: $file =~ s{^/userfiles/}{/uploaded/};
14211: }
14212: return $file;
14213: }
14214:
14215:
14216:
14217:
14218:
14219: sub current_machine_domains {
14220: return &machine_domains(&hostname($perlvar{'lonHostID'}));
14221: }
14222:
14223: sub machine_domains {
14224: my ($hostname) = @_;
14225: my @domains;
14226: my %hostname = &all_hostnames();
14227: while( my($id, $name) = each(%hostname)) {
14228: # &logthis("-$id-$name-$hostname-");
14229: if ($hostname eq $name) {
14230: push(@domains,&host_domain($id));
14231: }
14232: }
14233: return @domains;
14234: }
14235:
14236: sub current_machine_ids {
14237: return &machine_ids(&hostname($perlvar{'lonHostID'}));
14238: }
14239:
14240: sub machine_ids {
14241: my ($hostname) = @_;
14242: $hostname ||= &hostname($perlvar{'lonHostID'});
14243: my @ids;
14244: my %name_to_host = &all_names();
14245: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
14246: return @{ $name_to_host{$hostname} };
14247: }
14248: return;
14249: }
14250:
14251: sub additional_machine_domains {
14252: my @domains;
14253: open(my $fh,"<","$perlvar{'lonTabDir'}/expected_domains.tab");
14254: while( my $line = <$fh>) {
14255: $line =~ s/\s//g;
14256: push(@domains,$line);
14257: }
14258: return @domains;
14259: }
14260:
14261: sub default_login_domain {
14262: my $domain = $perlvar{'lonDefDomain'};
14263: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
14264: foreach my $posdom (¤t_machine_domains(),
14265: &additional_machine_domains()) {
14266: if (lc($posdom) eq lc($testdomain)) {
14267: $domain=$posdom;
14268: last;
14269: }
14270: }
14271: return $domain;
14272: }
14273:
14274: sub shared_institution {
14275: my ($dom,$lonhost) = @_;
14276: if ($lonhost eq '') {
14277: $lonhost = $perlvar{'lonHostID'};
14278: }
14279: my $same_intdom;
14280: my $hostintdom = &internet_dom($lonhost);
14281: if ($hostintdom ne '') {
14282: my %iphost = &get_iphost();
14283: my $primary_id = &domain($dom,'primary');
14284: my $primary_ip = &get_host_ip($primary_id);
14285: if (ref($iphost{$primary_ip}) eq 'ARRAY') {
14286: foreach my $id (@{$iphost{$primary_ip}}) {
14287: my $intdom = &internet_dom($id);
14288: if ($intdom eq $hostintdom) {
14289: $same_intdom = 1;
14290: last;
14291: }
14292: }
14293: }
14294: }
14295: return $same_intdom;
14296: }
14297:
14298: sub uses_sts {
14299: my ($ignore_cache) = @_;
14300: my $lonhost = $perlvar{'lonHostID'};
14301: my $hostname = &hostname($lonhost);
14302: my $sts_on;
14303: if ($protocol{$lonhost} eq 'https') {
14304: my $cachetime = 12*3600;
14305: if (!$ignore_cache) {
14306: ($sts_on,my $cached)=&is_cached_new('stspolicy',$lonhost);
14307: if (defined($cached)) {
14308: return $sts_on;
14309: }
14310: }
14311: my $url = $protocol{$lonhost}.'://'.$hostname.'/index.html';
14312: my $request=new HTTP::Request('HEAD',$url);
14313: my $response=&LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,'','','',1);
14314: if ($response->is_success) {
14315: my $has_sts = $response->header('Strict-Transport-Security');
14316: if ($has_sts eq '') {
14317: $sts_on = 0;
14318: } else {
14319: if ($has_sts =~ /\Qmax-age=\E(\d+)/) {
14320: my $maxage = $1;
14321: if ($maxage) {
14322: $sts_on = 1;
14323: } else {
14324: $sts_on = 0;
14325: }
14326: } else {
14327: $sts_on = 0;
14328: }
14329: }
14330: return &do_cache_new('stspolicy',$lonhost,$sts_on,$cachetime);
14331: }
14332: }
14333: return;
14334: }
14335:
14336: sub get_requestor_ip {
14337: my ($r,$nolookup,$noproxy) = @_;
14338: my $from_ip;
14339: if (ref($r)) {
14340: $from_ip = $r->get_remote_host($nolookup);
14341: } else {
14342: $from_ip = $ENV{'REMOTE_ADDR'};
14343: }
14344: return $from_ip if ($noproxy);
14345: # Who controls proxy settings for server
14346: my $dom_in_use = $Apache::lonnet::perlvar{'lonDefDomain'};
14347: my $proxyinfo = &get_proxy_settings($dom_in_use);
14348: if ((ref($proxyinfo) eq 'HASH') && ($from_ip)) {
14349: if ($proxyinfo->{'vpnint'}) {
14350: if (&ip_match($from_ip,$proxyinfo->{'vpnint'})) {
14351: return $from_ip;
14352: }
14353: }
14354: if ($proxyinfo->{'trusted'}) {
14355: if (&ip_match($from_ip,$proxyinfo->{'trusted'})) {
14356: my $ipheader = $proxyinfo->{'ipheader'};
14357: my ($ip,$xfor);
14358: if (ref($r)) {
14359: if ($ipheader) {
14360: $ip = $r->headers_in->{$ipheader};
14361: }
14362: $xfor = $r->headers_in->{'X-Forwarded-For'};
14363: } else {
14364: if ($ipheader) {
14365: $ip = $ENV{'HTTP_'.uc($ipheader)};
14366: }
14367: $xfor = $ENV{'HTTP_X_FORWARDED_FOR'};
14368: }
14369: if (($ip eq '') && ($xfor ne '')) {
14370: foreach my $poss_ip (reverse(split(/\s*,\s*/,$xfor))) {
14371: unless (&ip_match($poss_ip,$proxyinfo->{'trusted'})) {
14372: $ip = $poss_ip;
14373: last;
14374: }
14375: }
14376: }
14377: if ($ip ne '') {
14378: return $ip;
14379: }
14380: }
14381: }
14382: }
14383: return $from_ip;
14384: }
14385:
14386: sub get_proxy_settings {
14387: my ($dom_in_use) = @_;
14388: my %domdefaults = &Apache::lonnet::get_domain_defaults($dom_in_use);
14389: my $proxyinfo = {
14390: ipheader => $domdefaults{'waf_ipheader'},
14391: trusted => $domdefaults{'waf_trusted'},
14392: vpnint => $domdefaults{'waf_vpnint'},
14393: vpnext => $domdefaults{'waf_vpnext'},
14394: };
14395: return $proxyinfo;
14396: }
14397:
14398: sub ip_match {
14399: my ($ip,$pattern_str) = @_;
14400: $ip=Net::CIDR::cidrvalidate($ip);
14401: if ($ip) {
14402: return Net::CIDR::cidrlookup($ip,split(/\s*,\s*/,$pattern_str));
14403: }
14404: return;
14405: }
14406:
14407: sub get_proxy_alias {
14408: my $lonhost = $perlvar{'lonHostID'};
14409: if ($lonhost ne '') {
14410: my ($alias,$cached) = &is_cached_new('proxyalias',$lonhost);
14411: if ($cached) {
14412: return $alias;
14413: }
14414: my $dom = &Apache::lonnet::host_domain($lonhost);
14415: if ($dom ne '') {
14416: my $cachetime = 60*60*24;
14417: my %domconfig =
14418: &Apache::lonnet::get_dom('configuration',['wafproxy'],$dom);
14419: my $alias;
14420: if (ref($domconfig{'wafproxy'}) eq 'HASH') {
14421: if (ref($domconfig{'wafproxy'}{'alias'}) eq 'HASH') {
14422: $alias = $domconfig{'wafproxy'}{'alias'}{$lonhost};
14423: }
14424: }
14425: return &do_cache_new('proxyalias',$lonhost,$alias,$cachetime);
14426: }
14427: }
14428: return;
14429: }
14430:
14431: # ------------------------------------------------------------- Declutters URLs
14432:
14433: sub declutter {
14434: my $thisfn=shift;
14435: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
14436: unless ($thisfn=~m{^/home/httpd/html/priv/}) {
14437: $thisfn=~s{^/home/httpd/html}{};
14438: }
14439: $thisfn=~s/^\///;
14440: $thisfn=~s|^adm/wrapper/||;
14441: $thisfn=~s|^adm/coursedocs/showdoc/||;
14442: $thisfn=~s/^res\///;
14443: $thisfn=~s/^priv\///;
14444: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
14445: $thisfn=~s/\?.+$//;
14446: }
14447: return $thisfn;
14448: }
14449:
14450: # ------------------------------------------------------------- Clutter up URLs
14451:
14452: sub clutter {
14453: my $thisfn='/'.&declutter(shift);
14454: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
14455: || $thisfn =~ m{^/adm/(includes|pages)} ) {
14456: $thisfn='/res'.$thisfn;
14457: }
14458: if ($thisfn !~m|^/adm|) {
14459: if ($thisfn =~ m|^/ext/|) {
14460: $thisfn='/adm/wrapper'.$thisfn;
14461: } else {
14462: my ($ext) = ($thisfn =~ /\.(\w+)$/);
14463: my $embstyle=&Apache::loncommon::fileembstyle($ext);
14464: if ($embstyle eq 'ssi'
14465: || ($embstyle eq 'hdn')
14466: || ($embstyle eq 'rat')
14467: || ($embstyle eq 'prv')
14468: || ($embstyle eq 'ign')) {
14469: #do nothing with these
14470: } elsif (($embstyle eq 'img')
14471: || ($embstyle eq 'emb')
14472: || ($embstyle eq 'wrp')) {
14473: $thisfn='/adm/wrapper'.$thisfn;
14474: } elsif ($embstyle eq 'unk'
14475: && $thisfn!~/\.(sequence|page)$/) {
14476: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
14477: } else {
14478: # &logthis("Got a blank emb style");
14479: }
14480: }
14481: } elsif ($thisfn =~ m{^/adm/$match_domain/$match_courseid/\d+/ext\.tool$}) {
14482: $thisfn='/adm/wrapper'.$thisfn;
14483: }
14484: return $thisfn;
14485: }
14486:
14487: sub clutter_with_no_wrapper {
14488: my $uri = &clutter(shift);
14489: if ($uri =~ m-^/adm/-) {
14490: $uri =~ s-^/adm/wrapper/-/-;
14491: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
14492: }
14493: return $uri;
14494: }
14495:
14496: sub freeze_escape {
14497: my ($value)=@_;
14498: if (ref($value)) {
14499: $value=&nfreeze($value);
14500: return '__FROZEN__'.&escape($value);
14501: }
14502: return &escape($value);
14503: }
14504:
14505:
14506: sub thaw_unescape {
14507: my ($value)=@_;
14508: if ($value =~ /^__FROZEN__/) {
14509: substr($value,0,10,undef);
14510: $value=&unescape($value);
14511: return &thaw($value);
14512: }
14513: return &unescape($value);
14514: }
14515:
14516: sub correct_line_ends {
14517: my ($result)=@_;
14518: $$result =~s/\r\n/\n/mg;
14519: $$result =~s/\r/\n/mg;
14520: }
14521: # ================================================================ Main Program
14522:
14523: sub goodbye {
14524: &logthis("Starting Shut down");
14525: #not converted to using infrastruture and probably shouldn't be
14526: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
14527: #converted
14528: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
14529: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
14530: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
14531: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
14532: #1.1 only
14533: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
14534: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
14535: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
14536: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
14537: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
14538: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
14539: &logthis(sprintf("%-20s is %s",'hits',$hits));
14540: &flushcourselogs();
14541: &logthis("Shutting down");
14542: }
14543:
14544: sub get_dns {
14545: my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
14546: if (!$ignore_cache) {
14547: my ($content,$cached)=
14548: &Apache::lonnet::is_cached_new('dns',$url);
14549: if ($cached) {
14550: &$func($content,$hashref);
14551: return;
14552: }
14553: }
14554:
14555: my %alldns;
14556: if (open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab")) {
14557: foreach my $dns (<$config>) {
14558: next if ($dns !~ /^\^(\S*)/x);
14559: my $line = $1;
14560: my ($host,$protocol) = split(/:/,$line);
14561: if ($protocol ne 'https') {
14562: $protocol = 'http';
14563: }
14564: $alldns{$host} = $protocol;
14565: }
14566: close($config);
14567: }
14568: while (%alldns) {
14569: my ($dns) = sort { $b cmp $a } keys(%alldns);
14570: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
14571: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar,30,0);
14572: delete($alldns{$dns});
14573: next if ($response->is_error());
14574: if ($url eq '/adm/dns/loncapaCRL') {
14575: return &$func($response);
14576: } else {
14577: my @content = split("\n",$response->content);
14578: unless ($nocache) {
14579: &do_cache_new('dns',$url,\@content,30*24*60*60);
14580: }
14581: &$func(\@content,$hashref);
14582: return;
14583: }
14584: }
14585: my $which = (split('/',$url,4))[3];
14586: if ($which eq 'loncapaCRL') {
14587: my $diskfile = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
14588: if (-e $diskfile) {
14589: &logthis("unable to contact DNS, on disk file $diskfile not updated");
14590: } else {
14591: &logthis("unable to contact DNS, no on disk file $diskfile available");
14592: }
14593: } else {
14594: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
14595: if (open(my $config,"<","$perlvar{'lonTabDir'}/dns_$which.tab")) {
14596: my @content = <$config>;
14597: close($config);
14598: &$func(\@content,$hashref);
14599: }
14600: }
14601: return;
14602: }
14603:
14604: # ------------------------------------------------------Get DNS checksums file
14605: sub parse_dns_checksums_tab {
14606: my ($lines,$hashref) = @_;
14607: my $lonhost = $perlvar{'lonHostID'};
14608: my $machine_dom = &Apache::lonnet::host_domain($lonhost);
14609: my $loncaparev = &get_server_loncaparev($machine_dom);
14610: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
14611: my $webconfdir = '/etc/httpd/conf';
14612: if ($distro =~ /^(ubuntu|debian)(\d+)$/) {
14613: $webconfdir = '/etc/apache2';
14614: } elsif ($distro =~ /^sles(\d+)$/) {
14615: if ($1 >= 10) {
14616: $webconfdir = '/etc/apache2';
14617: }
14618: } elsif ($distro =~ /^suse(\d+\.\d+)$/) {
14619: if ($1 >= 10.0) {
14620: $webconfdir = '/etc/apache2';
14621: }
14622: }
14623: my ($release,$timestamp) = split(/\-/,$loncaparev);
14624: my (%chksum,%revnum);
14625: if (ref($lines) eq 'ARRAY') {
14626: chomp(@{$lines});
14627: my $version = shift(@{$lines});
14628: if ($version eq $release) {
14629: foreach my $line (@{$lines}) {
14630: my ($file,$version,$shasum) = split(/,/,$line);
14631: if ($file =~ m{^/etc/httpd/conf}) {
14632: if ($webconfdir eq '/etc/apache2') {
14633: $file =~ s{^\Q/etc/httpd/conf/\E}{$webconfdir/};
14634: }
14635: }
14636: $chksum{$file} = $shasum;
14637: $revnum{$file} = $version;
14638: }
14639: if (ref($hashref) eq 'HASH') {
14640: %{$hashref} = (
14641: sums => \%chksum,
14642: versions => \%revnum,
14643: );
14644: }
14645: }
14646: }
14647: return;
14648: }
14649:
14650: sub fetch_dns_checksums {
14651: my %checksums;
14652: my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
14653: my $loncaparev = &get_server_loncaparev($machine_dom,$perlvar{'lonHostID'});
14654: my ($release,$timestamp) = split(/\-/,$loncaparev);
14655: &get_dns("/adm/dns/checksums/$release",\&parse_dns_checksums_tab,1,1,
14656: \%checksums);
14657: return \%checksums;
14658: }
14659:
14660: sub fetch_crl_pemfile {
14661: return &get_dns("/adm/dns/loncapaCRL",\&save_crl_pem,1,1);
14662: }
14663:
14664: sub save_crl_pem {
14665: my ($response) = @_;
14666: my ($msg,$hadchanges);
14667: if (ref($response)) {
14668: my $now = time;
14669: my $lonca = $perlvar{'lonCertificateDirectory'}.'/'.$perlvar{'lonnetCertificateAuthority'};
14670: my $tmpcrl = $tmpdir.'/'.$perlvar{'lonnetCertRevocationList'}.'_'.$now.'.'.$$.'.tmp';
14671: if (open(my $fh,'>',"$tmpcrl")) {
14672: print $fh $response->content;
14673: close($fh);
14674: if (-e $lonca) {
14675: if (open(PIPE,"openssl crl -in $tmpcrl -inform pem -CAfile $lonca -noout 2>&1 |")) {
14676: my $check = <PIPE>;
14677: close(PIPE);
14678: chomp($check);
14679: if ($check eq 'verify OK') {
14680: my $dest = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
14681: my $backup;
14682: if (-e $dest) {
14683: if (&File::Copy::move($dest,"$dest.bak")) {
14684: $backup = 'ok';
14685: }
14686: }
14687: if (&File::Copy::move($tmpcrl,$dest)) {
14688: $msg = 'ok';
14689: if ($backup) {
14690: my (%oldnums,%newnums);
14691: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest.bak |grep 'Serial Number' |")) {
14692: while (<PIPE>) {
14693: $oldnums{(split(/:/))[1]} = 1;
14694: }
14695: close(PIPE);
14696: }
14697: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest |grep 'Serial Number' |")) {
14698: while(<PIPE>) {
14699: $newnums{(split(/:/))[1]} = 1;
14700: }
14701: close(PIPE);
14702: }
14703: foreach my $key (sort {$b <=> $a } (keys(%newnums))) {
14704: unless (exists($oldnums{$key})) {
14705: $hadchanges = 1;
14706: last;
14707: }
14708: }
14709: unless ($hadchanges) {
14710: foreach my $key (sort {$b <=> $a } (keys(%oldnums))) {
14711: unless (exists($newnums{$key})) {
14712: $hadchanges = 1;
14713: last;
14714: }
14715: }
14716: }
14717: }
14718: }
14719: } else {
14720: unlink($tmpcrl);
14721: }
14722: } else {
14723: unlink($tmpcrl);
14724: }
14725: } else {
14726: unlink($tmpcrl);
14727: }
14728: }
14729: }
14730: return ($msg,$hadchanges);
14731: }
14732:
14733: # ------------------------------------------------------------ Read domain file
14734: {
14735: my $loaded;
14736: my %domain;
14737:
14738: sub parse_domain_tab {
14739: my ($lines) = @_;
14740: foreach my $line (@$lines) {
14741: next if ($line =~ /^(\#|\s*$ )/x);
14742:
14743: chomp($line);
14744: my ($name,@elements) = split(/:/,$line,9);
14745: my %this_domain;
14746: foreach my $field ('description', 'auth_def', 'auth_arg_def',
14747: 'lang_def', 'city', 'longi', 'lati',
14748: 'primary') {
14749: $this_domain{$field} = shift(@elements);
14750: }
14751: $domain{$name} = \%this_domain;
14752: }
14753: }
14754:
14755: sub reset_domain_info {
14756: undef($loaded);
14757: undef(%domain);
14758: }
14759:
14760: sub load_domain_tab {
14761: my ($ignore_cache,$nocache) = @_;
14762: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache,$nocache);
14763: my $fh;
14764: if (open($fh,"<",$perlvar{'lonTabDir'}.'/domain.tab')) {
14765: my @lines = <$fh>;
14766: &parse_domain_tab(\@lines);
14767: }
14768: close($fh);
14769: $loaded = 1;
14770: }
14771:
14772: sub domain {
14773: &load_domain_tab() if (!$loaded);
14774:
14775: my ($name,$what) = @_;
14776: return if ( !exists($domain{$name}) );
14777:
14778: if (!$what) {
14779: return $domain{$name}{'description'};
14780: }
14781: return $domain{$name}{$what};
14782: }
14783:
14784: sub domain_info {
14785: &load_domain_tab() if (!$loaded);
14786: return %domain;
14787: }
14788:
14789: }
14790:
14791:
14792: # ------------------------------------------------------------- Read hosts file
14793: {
14794: my %hostname;
14795: my %hostdom;
14796: my %libserv;
14797: my $loaded;
14798: my %name_to_host;
14799: my %internetdom;
14800: my %LC_dns_serv;
14801:
14802: sub parse_hosts_tab {
14803: my ($file) = @_;
14804: foreach my $configline (@$file) {
14805: next if ($configline =~ /^(\#|\s*$ )/x);
14806: chomp($configline);
14807: if ($configline =~ /^\^/) {
14808: if ($configline =~ /^\^([\w.\-]+)/) {
14809: $LC_dns_serv{$1} = 1;
14810: }
14811: next;
14812: }
14813: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
14814: $name=~s/\s//g;
14815: if ($id && $domain && $role && $name) {
14816: if ((exists($hostname{$id})) && ($hostname{$id} ne '')) {
14817: my $curr = $hostname{$id};
14818: my $skip;
14819: if (ref($name_to_host{$curr}) eq 'ARRAY') {
14820: if (($curr eq $name) && (@{$name_to_host{$curr}} == 1)) {
14821: $skip = 1;
14822: } else {
14823: @{$name_to_host{$curr}} = grep { $_ ne $id } @{$name_to_host{$curr}};
14824: }
14825: }
14826: unless ($skip) {
14827: push(@{$name_to_host{$name}},$id);
14828: }
14829: } else {
14830: push(@{$name_to_host{$name}},$id);
14831: }
14832: $hostname{$id}=$name;
14833: $hostdom{$id}=$domain;
14834: if ($role eq 'library') { $libserv{$id}=$name; }
14835: if (defined($protocol)) {
14836: if ($protocol eq 'https') {
14837: $protocol{$id} = $protocol;
14838: } else {
14839: $protocol{$id} = 'http';
14840: }
14841: } else {
14842: $protocol{$id} = 'http';
14843: }
14844: if (defined($intdom)) {
14845: $internetdom{$id} = $intdom;
14846: }
14847: }
14848: }
14849: }
14850:
14851: sub reset_hosts_info {
14852: &purge_remembered();
14853: &reset_domain_info();
14854: &reset_hosts_ip_info();
14855: undef(%internetdom);
14856: undef(%name_to_host);
14857: undef(%hostname);
14858: undef(%hostdom);
14859: undef(%libserv);
14860: undef($loaded);
14861: }
14862:
14863: sub load_hosts_tab {
14864: my ($ignore_cache,$nocache) = @_;
14865: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache,$nocache);
14866: open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab");
14867: my @config = <$config>;
14868: &parse_hosts_tab(\@config);
14869: close($config);
14870: $loaded=1;
14871: }
14872:
14873: sub hostname {
14874: &load_hosts_tab() if (!$loaded);
14875:
14876: my ($lonid) = @_;
14877: return $hostname{$lonid};
14878: }
14879:
14880: sub all_hostnames {
14881: &load_hosts_tab() if (!$loaded);
14882:
14883: return %hostname;
14884: }
14885:
14886: sub all_names {
14887: my ($ignore_cache,$nocache) = @_;
14888: &load_hosts_tab($ignore_cache,$nocache) if (!$loaded);
14889:
14890: return %name_to_host;
14891: }
14892:
14893: sub all_host_domain {
14894: &load_hosts_tab() if (!$loaded);
14895: return %hostdom;
14896: }
14897:
14898: sub all_host_intdom {
14899: &load_hosts_tab() if (!$loaded);
14900: return %internetdom;
14901: }
14902:
14903: sub is_library {
14904: &load_hosts_tab() if (!$loaded);
14905:
14906: return exists($libserv{$_[0]});
14907: }
14908:
14909: sub all_library {
14910: &load_hosts_tab() if (!$loaded);
14911:
14912: return %libserv;
14913: }
14914:
14915: sub unique_library {
14916: #2x reverse removes all hostnames that appear more than once
14917: my %unique = reverse &all_library();
14918: return reverse %unique;
14919: }
14920:
14921: sub get_servers {
14922: &load_hosts_tab() if (!$loaded);
14923:
14924: my ($domain,$type) = @_;
14925: my %possible_hosts = ($type eq 'library') ? %libserv
14926: : %hostname;
14927: my %result;
14928: if (ref($domain) eq 'ARRAY') {
14929: while ( my ($host,$hostname) = each(%possible_hosts)) {
14930: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
14931: $result{$host} = $hostname;
14932: }
14933: }
14934: } else {
14935: while ( my ($host,$hostname) = each(%possible_hosts)) {
14936: if ($hostdom{$host} eq $domain) {
14937: $result{$host} = $hostname;
14938: }
14939: }
14940: }
14941: return %result;
14942: }
14943:
14944: sub get_unique_servers {
14945: my %unique = reverse &get_servers(@_);
14946: return reverse %unique;
14947: }
14948:
14949: sub host_domain {
14950: &load_hosts_tab() if (!$loaded);
14951:
14952: my ($lonid) = @_;
14953: return $hostdom{$lonid};
14954: }
14955:
14956: sub all_domains {
14957: &load_hosts_tab() if (!$loaded);
14958:
14959: my %seen;
14960: my @uniq = grep(!$seen{$_}++, values(%hostdom));
14961: return @uniq;
14962: }
14963:
14964: sub internet_dom {
14965: &load_hosts_tab() if (!$loaded);
14966:
14967: my ($lonid) = @_;
14968: return $internetdom{$lonid};
14969: }
14970:
14971: sub is_LC_dns {
14972: &load_hosts_tab() if (!$loaded);
14973:
14974: my ($hostname) = @_;
14975: return exists($LC_dns_serv{$hostname});
14976: }
14977:
14978: }
14979:
14980: {
14981: my %iphost;
14982: my %name_to_ip;
14983: my %lonid_to_ip;
14984:
14985: sub get_hosts_from_ip {
14986: my ($ip) = @_;
14987: my %iphosts = &get_iphost();
14988: if (ref($iphosts{$ip})) {
14989: return @{$iphosts{$ip}};
14990: }
14991: return;
14992: }
14993:
14994: sub reset_hosts_ip_info {
14995: undef(%iphost);
14996: undef(%name_to_ip);
14997: undef(%lonid_to_ip);
14998: }
14999:
15000: sub get_host_ip {
15001: my ($lonid) = @_;
15002: if (exists($lonid_to_ip{$lonid})) {
15003: return $lonid_to_ip{$lonid};
15004: }
15005: my $name=&hostname($lonid);
15006: my $ip = gethostbyname($name);
15007: return if (!$ip || length($ip) ne 4);
15008: $ip=inet_ntoa($ip);
15009: $name_to_ip{$name} = $ip;
15010: $lonid_to_ip{$lonid} = $ip;
15011: return $ip;
15012: }
15013:
15014: sub get_iphost {
15015: my ($ignore_cache,$nocache) = @_;
15016:
15017: if (!$ignore_cache) {
15018: if (%iphost) {
15019: return %iphost;
15020: }
15021: my ($ip_info,$cached)=
15022: &Apache::lonnet::is_cached_new('iphost','iphost');
15023: if ($cached) {
15024: %iphost = %{$ip_info->[0]};
15025: %name_to_ip = %{$ip_info->[1]};
15026: %lonid_to_ip = %{$ip_info->[2]};
15027: return %iphost;
15028: }
15029: }
15030:
15031: # get yesterday's info for fallback
15032: my %old_name_to_ip;
15033: my ($ip_info,$cached)=
15034: &Apache::lonnet::is_cached_new('iphost','iphost');
15035: if ($cached) {
15036: %old_name_to_ip = %{$ip_info->[1]};
15037: }
15038:
15039: my %name_to_host = &all_names($ignore_cache,$nocache);
15040: foreach my $name (keys(%name_to_host)) {
15041: my $ip;
15042: if (!exists($name_to_ip{$name})) {
15043: $ip = gethostbyname($name);
15044: if (!$ip || length($ip) ne 4) {
15045: if (defined($old_name_to_ip{$name})) {
15046: $ip = $old_name_to_ip{$name};
15047: &logthis("Can't find $name defaulting to old $ip");
15048: } else {
15049: &logthis("Name $name no IP found");
15050: next;
15051: }
15052: } else {
15053: $ip=inet_ntoa($ip);
15054: }
15055: $name_to_ip{$name} = $ip;
15056: } else {
15057: $ip = $name_to_ip{$name};
15058: }
15059: foreach my $id (@{ $name_to_host{$name} }) {
15060: $lonid_to_ip{$id} = $ip;
15061: }
15062: push(@{$iphost{$ip}},@{$name_to_host{$name}});
15063: }
15064: unless ($nocache) {
15065: &do_cache_new('iphost','iphost',
15066: [\%iphost,\%name_to_ip,\%lonid_to_ip],
15067: 48*60*60);
15068: }
15069:
15070: return %iphost;
15071: }
15072:
15073: #
15074: # Given a DNS returns the loncapa host name for that DNS
15075: #
15076: sub host_from_dns {
15077: my ($dns) = @_;
15078: my @hosts;
15079: my $ip;
15080:
15081: if (exists($name_to_ip{$dns})) {
15082: $ip = $name_to_ip{$dns};
15083: }
15084: if (!$ip) {
15085: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
15086: if (length($ip) == 4) {
15087: $ip = &IO::Socket::inet_ntoa($ip);
15088: }
15089: }
15090: if ($ip) {
15091: @hosts = get_hosts_from_ip($ip);
15092: return $hosts[0];
15093: }
15094: return undef;
15095: }
15096:
15097: sub get_internet_names {
15098: my ($lonid) = @_;
15099: return if ($lonid eq '');
15100: my ($idnref,$cached)=
15101: &Apache::lonnet::is_cached_new('internetnames',$lonid);
15102: if ($cached) {
15103: return $idnref;
15104: }
15105: my $ip = &get_host_ip($lonid);
15106: my @hosts = &get_hosts_from_ip($ip);
15107: my %iphost = &get_iphost();
15108: my (@idns,%seen);
15109: foreach my $id (@hosts) {
15110: my $dom = &host_domain($id);
15111: my $prim_id = &domain($dom,'primary');
15112: my $prim_ip = &get_host_ip($prim_id);
15113: next if ($seen{$prim_ip});
15114: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
15115: foreach my $id (@{$iphost{$prim_ip}}) {
15116: my $intdom = &internet_dom($id);
15117: unless (grep(/^\Q$intdom\E$/,@idns)) {
15118: push(@idns,$intdom);
15119: }
15120: }
15121: }
15122: $seen{$prim_ip} = 1;
15123: }
15124: return &do_cache_new('internetnames',$lonid,\@idns,12*60*60);
15125: }
15126:
15127: }
15128:
15129: sub all_loncaparevs {
15130: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11);
15131: }
15132:
15133: # ---------------------------------------------------------- Read loncaparev table
15134: {
15135: sub load_loncaparevs {
15136: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
15137: if (open(my $config,"<","$perlvar{'lonTabDir'}/loncaparevs.tab")) {
15138: while (my $configline=<$config>) {
15139: chomp($configline);
15140: my ($hostid,$loncaparev)=split(/:/,$configline);
15141: $loncaparevs{$hostid}=$loncaparev;
15142: }
15143: close($config);
15144: }
15145: }
15146: }
15147: }
15148:
15149: # ---------------------------------------------------------- Read serverhostID table
15150: {
15151: sub load_serverhomeIDs {
15152: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
15153: if (open(my $config,"<","$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
15154: while (my $configline=<$config>) {
15155: chomp($configline);
15156: my ($name,$id)=split(/:/,$configline);
15157: $serverhomeIDs{$name}=$id;
15158: }
15159: close($config);
15160: }
15161: }
15162: }
15163: }
15164:
15165:
15166: BEGIN {
15167:
15168: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
15169: unless ($readit) {
15170: {
15171: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
15172: %perlvar = (%perlvar,%{$configvars});
15173: }
15174:
15175:
15176: # ------------------------------------------------------ Read spare server file
15177: {
15178: open(my $config,"<","$perlvar{'lonTabDir'}/spare.tab");
15179:
15180: while (my $configline=<$config>) {
15181: chomp($configline);
15182: if ($configline) {
15183: my ($host,$type) = split(':',$configline,2);
15184: if (!defined($type) || $type eq '') { $type = 'default' };
15185: push(@{ $spareid{$type} }, $host);
15186: }
15187: }
15188: close($config);
15189: }
15190: # ------------------------------------------------------------ Read permissions
15191: {
15192: open(my $config,"<","$perlvar{'lonTabDir'}/roles.tab");
15193:
15194: while (my $configline=<$config>) {
15195: chomp($configline);
15196: if ($configline) {
15197: my ($role,$perm)=split(/ /,$configline);
15198: if ($perm ne '') { $pr{$role}=$perm; }
15199: }
15200: }
15201: close($config);
15202: }
15203:
15204: # -------------------------------------------- Read plain texts for permissions
15205: {
15206: open(my $config,"<","$perlvar{'lonTabDir'}/rolesplain.tab");
15207:
15208: while (my $configline=<$config>) {
15209: chomp($configline);
15210: if ($configline) {
15211: my ($short,@plain)=split(/:/,$configline);
15212: %{$prp{$short}} = ();
15213: if (@plain > 0) {
15214: $prp{$short}{'std'} = $plain[0];
15215: for (my $i=1; $i<@plain; $i++) {
15216: $prp{$short}{'alt'.$i} = $plain[$i];
15217: }
15218: }
15219: }
15220: }
15221: close($config);
15222: }
15223:
15224: # ---------------------------------------------------------- Read package table
15225: {
15226: open(my $config,"<","$perlvar{'lonTabDir'}/packages.tab");
15227:
15228: while (my $configline=<$config>) {
15229: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
15230: chomp($configline);
15231: my ($short,$plain)=split(/:/,$configline);
15232: my ($pack,$name)=split(/\&/,$short);
15233: if ($plain ne '') {
15234: $packagetab{$pack.'&'.$name.'&name'}=$name;
15235: $packagetab{$short}=$plain;
15236: }
15237: }
15238: close($config);
15239: }
15240:
15241: # ---------------------------------------------------------- Read loncaparev table
15242:
15243: &load_loncaparevs();
15244:
15245: # ---------------------------------------------------------- Read serverhostID table
15246:
15247: &load_serverhomeIDs();
15248:
15249: # ---------------------------------------------------------- Read releaseslist XML
15250: {
15251: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
15252: if (-e $file) {
15253: my $parser = HTML::LCParser->new($file);
15254: while (my $token = $parser->get_token()) {
15255: if ($token->[0] eq 'S') {
15256: my $item = $token->[1];
15257: my $name = $token->[2]{'name'};
15258: my $value = $token->[2]{'value'};
15259: my $valuematch = $token->[2]{'valuematch'};
15260: my $namematch = $token->[2]{'namematch'};
15261: if ($item eq 'parameter') {
15262: if (($namematch ne '') || (($name ne '') && ($value ne '' || $valuematch ne ''))) {
15263: my $release = $parser->get_text();
15264: $release =~ s/(^\s*|\s*$ )//gx;
15265: $needsrelease{$item.':'.$name.':'.$value.':'.$valuematch.':'.$namematch} = $release;
15266: }
15267: } elsif ($item ne '' && $name ne '') {
15268: my $release = $parser->get_text();
15269: $release =~ s/(^\s*|\s*$ )//gx;
15270: $needsrelease{$item.':'.$name.':'.$value} = $release;
15271: }
15272: }
15273: }
15274: }
15275: }
15276:
15277: # ---------------------------------------------------------- Read managers table
15278: {
15279: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
15280: if (open(my $config,"<","$perlvar{'lonTabDir'}/managers.tab")) {
15281: while (my $configline=<$config>) {
15282: chomp($configline);
15283: next if ($configline =~ /^\#/);
15284: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
15285: $managerstab{$configline} = 1;
15286: }
15287: }
15288: close($config);
15289: }
15290: }
15291: }
15292:
15293: # ------------- set up temporary directory
15294: {
15295: $tmpdir = LONCAPA::tempdir();
15296:
15297: }
15298:
15299: # ------------- set default texengine (domain default overrides this)
15300: {
15301: $deftex = LONCAPA::texengine();
15302: }
15303:
15304: # ------------- set default minimum length for passwords for internal auth users
15305: {
15306: $passwdmin = LONCAPA::passwd_min();
15307: }
15308:
15309: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
15310: 'compress_threshold'=> 20_000,
15311: });
15312:
15313: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
15314: $dumpcount=0;
15315: $locknum=0;
15316:
15317: &logtouch();
15318: &logthis('<font color="yellow">INFO: Read configuration</font>');
15319: $readit=1;
15320: {
15321: use integer;
15322: my $test=(2**32)+1;
15323: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
15324: &logthis(" Detected 64bit platform ($_64bit)");
15325: }
15326: }
15327: }
15328:
15329: 1;
15330: __END__
15331:
15332: =pod
15333:
15334: =head1 NAME
15335:
15336: Apache::lonnet - Subroutines to ask questions about things in the network.
15337:
15338: =head1 SYNOPSIS
15339:
15340: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
15341:
15342: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
15343:
15344: Common parameters:
15345:
15346: =over 4
15347:
15348: =item *
15349:
15350: $uname : an internal username (if $cname expecting a course Id specifically)
15351:
15352: =item *
15353:
15354: $udom : a domain (if $cdom expecting a course's domain specifically)
15355:
15356: =item *
15357:
15358: $symb : a resource instance identifier
15359:
15360: =item *
15361:
15362: $namespace : the name of a .db file that contains the data needed or
15363: being set.
15364:
15365: =back
15366:
15367: =head1 OVERVIEW
15368:
15369: lonnet provides subroutines which interact with the
15370: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
15371: about classes, users, and resources.
15372:
15373: For many of these objects you can also use this to store data about
15374: them or modify them in various ways.
15375:
15376: =head2 Symbs
15377:
15378: To identify a specific instance of a resource, LON-CAPA uses symbols
15379: or "symbs"X<symb>. These identifiers are built from the URL of the
15380: map, the resource number of the resource in the map, and the URL of
15381: the resource itself. The latter is somewhat redundant, but might help
15382: if maps change.
15383:
15384: An example is
15385:
15386: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
15387:
15388: The respective map entry is
15389:
15390: <resource id="19" src="/res/msu/korte/tests/part12.problem"
15391: title="Problem 2">
15392: </resource>
15393:
15394: Symbs are used by the random number generator, as well as to store and
15395: restore data specific to a certain instance of for example a problem.
15396:
15397: =head2 Storing And Retrieving Data
15398:
15399: X<store()>X<cstore()>X<restore()>Three of the most important functions
15400: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
15401: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
15402: is is the non-critical message twin of cstore. These functions are for
15403: handlers to store a perl hash to a user's permanent data space in an
15404: easy manner, and to retrieve it again on another call. It is expected
15405: that a handler would use this once at the beginning to retrieve data,
15406: and then again once at the end to send only the new data back.
15407:
15408: The data is stored in the user's data directory on the user's
15409: homeserver under the ID of the course.
15410:
15411: The hash that is returned by restore will have all of the previous
15412: value for all of the elements of the hash.
15413:
15414: Example:
15415:
15416: #creating a hash
15417: my %hash;
15418: $hash{'foo'}='bar';
15419:
15420: #storing it
15421: &Apache::lonnet::cstore(\%hash);
15422:
15423: #changing a value
15424: $hash{'foo'}='notbar';
15425:
15426: #adding a new value
15427: $hash{'bar'}='foo';
15428: &Apache::lonnet::cstore(\%hash);
15429:
15430: #retrieving the hash
15431: my %history=&Apache::lonnet::restore();
15432:
15433: #print the hash
15434: foreach my $key (sort(keys(%history))) {
15435: print("\%history{$key} = $history{$key}");
15436: }
15437:
15438: Will print out:
15439:
15440: %history{1:foo} = bar
15441: %history{1:keys} = foo:timestamp
15442: %history{1:timestamp} = 990455579
15443: %history{2:bar} = foo
15444: %history{2:foo} = notbar
15445: %history{2:keys} = foo:bar:timestamp
15446: %history{2:timestamp} = 990455580
15447: %history{bar} = foo
15448: %history{foo} = notbar
15449: %history{timestamp} = 990455580
15450: %history{version} = 2
15451:
15452: Note that the special hash entries C<keys>, C<version> and
15453: C<timestamp> were added to the hash. C<version> will be equal to the
15454: total number of versions of the data that have been stored. The
15455: C<timestamp> attribute will be the UNIX time the hash was
15456: stored. C<keys> is available in every historical section to list which
15457: keys were added or changed at a specific historical revision of a
15458: hash.
15459:
15460: B<Warning>: do not store the hash that restore returns directly. This
15461: will cause a mess since it will restore the historical keys as if the
15462: were new keys. I.E. 1:foo will become 1:1:foo etc.
15463:
15464: Calling convention:
15465:
15466: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
15467: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$laststore);
15468:
15469: For more detailed information, see lonnet specific documentation.
15470:
15471: =head1 RETURN MESSAGES
15472:
15473: =over 4
15474:
15475: =item * B<con_lost>: unable to contact remote host
15476:
15477: =item * B<con_delayed>: unable to contact remote host, message will be delivered
15478: when the connection is brought back up
15479:
15480: =item * B<con_failed>: unable to contact remote host and unable to save message
15481: for later delivery
15482:
15483: =item * B<error:>: an error a occurred, a description of the error follows the :
15484:
15485: =item * B<no_such_host>: unable to fund a host associated with the user/domain
15486: that was requested
15487:
15488: =back
15489:
15490: =head1 PUBLIC SUBROUTINES
15491:
15492: =head2 Session Environment Functions
15493:
15494: =over 4
15495:
15496: =item *
15497: X<appenv()>
15498: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
15499: the user envirnoment file, and will be restored for each access this
15500: user makes during this session, also modifies the %env for the current
15501: process. Optional rolesarrayref - if defined contains a reference to an array
15502: of roles which are exempt from the restriction on modifying user.role entries
15503: in the user's environment.db and in %env.
15504:
15505: =item *
15506: X<delenv()>
15507: B<delenv($delthis,$regexp)>: removes all items from the session
15508: environment file that begin with $delthis. If the
15509: optional second arg - $regexp - is true, $delthis is treated as a
15510: regular expression, otherwise \Q$delthis\E is used.
15511: The values are also deleted from the current processes %env.
15512:
15513: =item * get_env_multiple($name)
15514:
15515: gets $name from the %env hash, it seemlessly handles the cases where multiple
15516: values may be defined and end up as an array ref.
15517:
15518: returns an array of values
15519:
15520: =back
15521:
15522: =head2 User Information
15523:
15524: =over 4
15525:
15526: =item *
15527: X<queryauthenticate()>
15528: B<queryauthenticate($uname,$udom)>: try to determine user's current
15529: authentication scheme
15530:
15531: =item *
15532: X<authenticate()>
15533: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
15534: authenticate user from domain's lib servers (first use the current
15535: one). C<$upass> should be the users password.
15536: $checkdefauth is optional (value is 1 if a check should be made to
15537: authenticate user using default authentication method, and allow
15538: account creation if username does not have account in the domain).
15539: $clientcancheckhost is optional (value is 1 if checking whether the
15540: server can host will occur on the client side in lonauth.pm).
15541:
15542: =item *
15543: X<homeserver()>
15544: B<homeserver($uname,$udom)>: find the server which has
15545: the user's directory and files (there must be only one), this caches
15546: the answer, and also caches if there is a borken connection.
15547:
15548: =item *
15549: X<idget()>
15550: B<idget($udom,$idsref,$namespace)>: find the usernames behind either
15551: a list of student/employee IDs or clicker IDs
15552: (student/employee IDs are a unique resource in a domain, there must be
15553: only 1 ID per username, and only 1 username per ID in a specific domain).
15554: clickerIDs are not necessarily unique, as students might share clickers.
15555: (returns hash: id=>name,id=>name)
15556:
15557: =item *
15558: X<idrget()>
15559: B<idrget($udom,@unames)>: find the IDs behind a list of
15560: usernames (returns hash: name=>id,name=>id)
15561:
15562: =item *
15563: X<idput()>
15564: B<idput($udom,$idsref,$uhome,$namespace)>: store away a list of
15565: names and associated student/employee IDs or clicker IDs.
15566:
15567: =item *
15568: X<iddel()>
15569: B<iddel($udom,$idshashref,$uhome,$namespace)>: delete unwanted
15570: student/employee ID or clicker ID username look-ups from domain.
15571: The homeserver ($uhome) and namespace ($namespace) are optional.
15572: If no $uhome is provided, it will be determined usig &homeserver()
15573: for each user. If no $namespace is provided, the default is ids.
15574:
15575: =item *
15576: X<updateclickers()>
15577: B<updateclickers($udom,$action,$idshashref,$uhome,$critical)>: update
15578: clicker ID-to-username look-ups in clickers.db on library server.
15579: Permitted actions are add or del (i.e., add or delete). The
15580: clickers.db contains clickerID as keys (escaped), and each corresponding
15581: value is an escaped comma-separated list of usernames (for whom the
15582: library server is the homeserver), who registered that particular ID.
15583: If $critical is true, the update will be sent via &critical, otherwise
15584: &reply() will be used.
15585:
15586: =item *
15587: X<rolesinit()>
15588: B<rolesinit($udom,$username)>: get user privileges.
15589: returns user role, first access and timer interval hashes
15590:
15591: =item *
15592: X<privileged()>
15593: B<privileged($username,$domain)>: returns a true if user has a
15594: privileged and active role (i.e. su or dc), false otherwise.
15595:
15596: =item *
15597: X<getsection()>
15598: B<getsection($udom,$uname,$cname)>: finds the section of student in the
15599: course $cname, return section name/number or '' for "not in course"
15600: and '-1' for "no section"
15601:
15602: =item *
15603: X<userenvironment()>
15604: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
15605: passed in @what from the requested user's environment, returns a hash
15606:
15607: =item *
15608: X<userlog_query()>
15609: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
15610: activity.log file. %filters defines filters applied when parsing the
15611: log file. These can be start or end timestamps, or the type of action
15612: - log to look for Login or Logout events, check for Checkin or
15613: Checkout, role for role selection. The response is in the form
15614: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
15615: escaped strings of the action recorded in the activity.log file.
15616:
15617: =back
15618:
15619: =head2 User Roles
15620:
15621: =over 4
15622:
15623: =item *
15624:
15625: allowed($priv,$uri,$symb,$role,$clientip,$noblockcheck) : check for a user privilege;
15626: returns codes for allowed actions.
15627:
15628: The first argument is required, all others are optional.
15629:
15630: $priv is the privilege being checked.
15631: $uri contains additional information about what is being checked for access (e.g.,
15632: URL, course ID etc.).
15633: $symb is the unique resource instance identifier in a course; if needed,
15634: but not provided, it will be retrieved via a call to &symbread().
15635: $role is the role for which a priv is being checked (only used if priv is evb).
15636: $clientip is the user's IP address (only used when checking for access to portfolio
15637: files).
15638: $noblockcheck, if true, skips calls to &has_comm_blocking() for the bre priv. This
15639: prevents recursive calls to &allowed.
15640:
15641: F: full access
15642: U,I,K: authentication modes (cxx only)
15643: '': forbidden
15644: 1: user needs to choose course
15645: 2: browse allowed
15646: A: passphrase authentication needed
15647: B: access temporarily blocked because of a blocking event in a course.
15648: D: access blocked because access is required via session initiated via deep-link
15649:
15650: =item *
15651:
15652: constructaccess($url,$setpriv) : check for access to construction space URL
15653:
15654: See if the owner domain and name in the URL match those in the
15655: expected environment. If so, return three element list
15656: ($ownername,$ownerdomain,$ownerhome).
15657:
15658: Otherwise return the null string.
15659:
15660: If second argument 'setpriv' is true, it assigns the privileges,
15661: and returns the same three element list, unless the owner has
15662: blocked "ad hoc" Domain Coordinator access to the Author Space,
15663: in which case the null string is returned.
15664:
15665: =item *
15666:
15667: definerole($rolename,$sysrole,$domrole,$courole,$uname,$udom) : define role;
15668: define a custom role rolename set privileges in format of lonTabs/roles.tab
15669: for system, domain, and course level. $uname and $udom are optional (current
15670: user's username and domain will be used when either of $uname or $udom are absent.
15671:
15672: =item *
15673:
15674: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
15675: (rolesplain.tab); plain text explanation of a user role term.
15676: $type is Course (default) or Community.
15677: If $forcedefault evaluates to true, text returned will be default
15678: text for $type. Otherwise, if this is a course, the text returned
15679: will be a custom name for the role (if defined in the course's
15680: environment). If no custom name is defined the default is returned.
15681:
15682: =item *
15683:
15684: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
15685: All arguments are optional. Returns a hash of a roles, either for
15686: co-author/assistant author roles for a user's Construction Space
15687: (default), or if $context is 'userroles', roles for the user himself,
15688: In the hash, keys are set to colon-separated $uname,$udom,$role, and
15689: (optionally) if $withsec is true, a fourth colon-separated item - $section.
15690: For each key, value is set to colon-separated start and end times for
15691: the role. If no username and domain are specified, will default to
15692: current user/domain. Types, roles, and roledoms are references to arrays
15693: of role statuses (active, future or previous), roles
15694: (e.g., cc,in, st etc.) and domains of the roles which can be used
15695: to restrict the list of roles reported. If no array ref is
15696: provided for types, will default to return only active roles.
15697:
15698: =item *
15699:
15700: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
15701: user: $uname:$udom has a role in the course: $cdom_$cnum.
15702:
15703: Additional optional arguments are: $type (if role checking is to be restricted
15704: to certain user status types -- previous (expired roles), active (currently
15705: available roles) or future (roles available in the future), and
15706: $hideprivileged -- if true will not report course roles for users who
15707: have active Domain Coordinator role in course's domain or in additional
15708: domains (specified in 'Domains to check for privileged users' in course
15709: environment -- set via: Course Settings -> Classlists and staff listing).
15710:
15711: =item *
15712:
15713: privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
15714: $username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
15715: $possdomains and $possroles are optional array refs -- to domains to check and
15716: roles to check. If $possdomains is not specified, a dump will be done of the
15717: users' roles.db to check for a dc or su role in any domain. This can be
15718: time consuming if &privileged is called repeatedly (e.g., when displaying a
15719: classlist), so in such cases, supplying a $possdomains array is preferred, as
15720: this then allows &privileged_by_domain() to be used, which caches the identity
15721: of privileged users, eliminating the need for repeated calls to &dump().
15722:
15723: =item *
15724:
15725: privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
15726: where the outer hash keys are domains specified in the $possdomains array ref,
15727: next inner hash keys are privileged roles specified in the $roles array ref,
15728: and the innermost hash contains key = value pairs for username:domain = end:start
15729: for active or future "privileged" users with that role in that domain. To avoid
15730: repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
15731: innerhash are cached using priv_$role and $dom as the identifiers.
15732:
15733: =back
15734:
15735: =head2 User Modification
15736:
15737: =over 4
15738:
15739: =item *
15740:
15741: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
15742: user for the level given by URL. Optional start and end dates (leave empty
15743: string or zero for "no date")
15744:
15745: =item *
15746:
15747: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
15748: change a users, password, possible return values are: ok,
15749: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
15750: refused
15751:
15752: =item *
15753:
15754: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
15755:
15756: =item *
15757:
15758: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
15759: $forceid,$desiredhome,$email,$inststatus,$candelete) :
15760:
15761: will update user information (firstname,middlename,lastname,generation,
15762: permanentemail), and if forceid is true, student/employee ID also.
15763: A user's institutional affiliation(s) can also be updated.
15764: User information fields will not be overwritten with empty entries
15765: unless the field is included in the $candelete array reference.
15766: This array is included when a single user is modified via "Manage Users",
15767: or when Autoupdate.pl is run by cron in a domain.
15768:
15769: =item *
15770:
15771: modifystudent
15772:
15773: modify a student's enrollment and identification information.
15774: The course id is resolved based on the current user's environment.
15775: This means the invoking user must be a course coordinator or otherwise
15776: associated with a course.
15777:
15778: This call is essentially a wrapper for lonnet::modifyuser and
15779: lonnet::modify_student_enrollment
15780:
15781: Inputs:
15782:
15783: =over 4
15784:
15785: =item B<$udom> Student's loncapa domain
15786:
15787: =item B<$uname> Student's loncapa login name
15788:
15789: =item B<$uid> Student/Employee ID
15790:
15791: =item B<$umode> Student's authentication mode
15792:
15793: =item B<$upass> Student's password
15794:
15795: =item B<$first> Student's first name
15796:
15797: =item B<$middle> Student's middle name
15798:
15799: =item B<$last> Student's last name
15800:
15801: =item B<$gene> Student's generation
15802:
15803: =item B<$usec> Student's section in course
15804:
15805: =item B<$end> Unix time of the roles expiration
15806:
15807: =item B<$start> Unix time of the roles start date
15808:
15809: =item B<$forceid> If defined, allow $uid to be changed
15810:
15811: =item B<$desiredhome> server to use as home server for student
15812:
15813: =item B<$email> Student's permanent e-mail address
15814:
15815: =item B<$type> Type of enrollment (auto or manual)
15816:
15817: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
15818:
15819: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
15820:
15821: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
15822:
15823: =item B<$context> role change context (shown in User Management Logs display in a course)
15824:
15825: =item B<$inststatus> institutional status of user - : separated string of escaped status types
15826:
15827: =item B<$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.
15828:
15829: =back
15830:
15831: =item *
15832:
15833: modify_student_enrollment
15834:
15835: Change a student's enrollment status in a class. The environment variable
15836: 'role.request.course' must be defined for this function to proceed.
15837:
15838: Inputs:
15839:
15840: =over 4
15841:
15842: =item $udom, student's domain
15843:
15844: =item $uname, student's name
15845:
15846: =item $uid, student's user id
15847:
15848: =item $first, student's first name
15849:
15850: =item $middle
15851:
15852: =item $last
15853:
15854: =item $gene
15855:
15856: =item $usec
15857:
15858: =item $end
15859:
15860: =item $start
15861:
15862: =item $type
15863:
15864: =item $locktype
15865:
15866: =item $cid
15867:
15868: =item $selfenroll
15869:
15870: =item $context
15871:
15872: =item $credits, number of credits student will earn from this class
15873:
15874: =item $instsec, institutional course section code for student
15875:
15876: =back
15877:
15878:
15879: =item *
15880:
15881: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
15882: custom role; give a custom role to a user for the level given by URL. Specify
15883: name and domain of role author, and role name
15884:
15885: =item *
15886:
15887: revokerole($udom,$uname,$url,$role) : revoke a role for url
15888:
15889: =item *
15890:
15891: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
15892:
15893: =back
15894:
15895: =head2 Course Infomation
15896:
15897: =over 4
15898:
15899: =item *
15900:
15901: coursedescription($courseid,$options) : returns a hash of information about the
15902: specified course id, including all environment settings for the
15903: course, the description of the course will be in the hash under the
15904: key 'description'
15905:
15906: $options is an optional parameter that if supplied is a hash reference that controls
15907: what how this function works. It has the following key/values:
15908:
15909: =over 4
15910:
15911: =item freshen_cache
15912:
15913: If defined, and the environment cache for the course is valid, it is
15914: returned in the returned hash.
15915:
15916: =item one_time
15917:
15918: If defined, the last cache time is set to _now_
15919:
15920: =item user
15921:
15922: If defined, the supplied username is used instead of the current user.
15923:
15924:
15925: =back
15926:
15927: =item *
15928:
15929: resdata($name,$domain,$type,@which) : request for current parameter
15930: setting for a specific $type, where $type is either 'course' or 'user',
15931: @what should be a list of parameters to ask about. This routine caches
15932: answers for 10 minutes.
15933:
15934: =item *
15935:
15936: get_courseresdata($courseid, $domain) : dump the entire course resource
15937: data base, returning a hash that is keyed by the resource name and has
15938: values that are the resource value. I believe that the timestamps and
15939: versions are also returned.
15940:
15941: get_numsuppfiles($cnum,$cdom) : retrieve number of files in a course's
15942: supplemental content area. This routine caches the number of files for
15943: 10 minutes.
15944:
15945: =back
15946:
15947: =head2 Course Modification
15948:
15949: =over 4
15950:
15951: =item *
15952:
15953: writecoursepref($courseid,%prefs) : write preferences (environment
15954: database) for a course
15955:
15956: =item *
15957:
15958: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
15959:
15960: =item *
15961:
15962: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
15963:
15964: =item *
15965:
15966: is_course($courseid), is_course($cdom, $cnum)
15967:
15968: Accepts either a combined $courseid (in the form of domain_courseid) or the
15969: two component version $cdom, $cnum. It checks if the specified course exists.
15970:
15971: Returns:
15972: undef if the course doesn't exist, otherwise
15973: in scalar context the combined courseid.
15974: in list context the two components of the course identifier, domain and
15975: courseid.
15976:
15977: =back
15978:
15979: =head2 Bubblesheet Configuration
15980:
15981: =over 4
15982:
15983: =item *
15984:
15985: get_scantron_config($which)
15986:
15987: $which - the name of the configuration to parse from the file.
15988:
15989: Parses and returns the bubblesheet configuration line selected as a
15990: hash of configuration file fields.
15991:
15992:
15993: Returns:
15994: If the named configuration is not in the file, an empty
15995: hash is returned.
15996:
15997: a hash with the fields
15998: name - internal name for the this configuration setup
15999: description - text to display to operator that describes this config
16000: CODElocation - if 0 or the string 'none'
16001: - no CODE exists for this config
16002: if -1 || the string 'letter'
16003: - a CODE exists for this config and is
16004: a string of letters
16005: Unsupported value (but planned for future support)
16006: if a positive integer
16007: - The CODE exists as the first n items from
16008: the question section of the form
16009: if the string 'number'
16010: - The CODE exists for this config and is
16011: a string of numbers
16012: CODEstart - (only matter if a CODE exists) column in the line where
16013: the CODE starts
16014: CODElength - length of the CODE
16015: IDstart - column where the student/employee ID starts
16016: IDlength - length of the student/employee ID info
16017: Qstart - column where the information from the bubbled
16018: 'questions' start
16019: Qlength - number of columns comprising a single bubble line from
16020: the sheet. (usually either 1 or 10)
16021: Qon - either a single character representing the character used
16022: to signal a bubble was chosen in the positional setup, or
16023: the string 'letter' if the letter of the chosen bubble is
16024: in the final, or 'number' if a number representing the
16025: chosen bubble is in the file (1->A 0->J)
16026: Qoff - the character used to represent that a bubble was
16027: left blank
16028: PaperID - if the scanning process generates a unique number for each
16029: sheet scanned the column that this ID number starts in
16030: PaperIDlength - number of columns that comprise the unique ID number
16031: for the sheet of paper
16032: FirstName - column that the first name starts in
16033: FirstNameLength - number of columns that the first name spans
16034: LastName - column that the last name starts in
16035: LastNameLength - number of columns that the last name spans
16036: BubblesPerRow - number of bubbles available in each row used to
16037: bubble an answer. (If not specified, 10 assumed).
16038:
16039:
16040: =item *
16041:
16042: get_scantronformat_file($cdom)
16043:
16044: $cdom - the course's domain (optional); if not supplied, uses
16045: domain for current $env{'request.course.id'}.
16046:
16047: Returns an array containing lines from the scantron format file for
16048: the domain of the course.
16049:
16050: If a url for a custom.tab file is listed in domain's configuration.db,
16051: lines are from this file.
16052:
16053: Otherwise, if a default.tab has been published in RES space by the
16054: domainconfig user, lines are from this file.
16055:
16056: Otherwise, fall back to getting lines from the legacy file on the
16057: local server: /home/httpd/lonTabs/default_scantronformat.tab
16058:
16059: =back
16060:
16061: =head2 Resource Subroutines
16062:
16063: =over 4
16064:
16065: =item *
16066:
16067: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
16068:
16069: =item *
16070:
16071: repcopy($filename) : subscribes to the requested file, and attempts to
16072: replicate from the owning library server, Might return
16073: 'unavailable', 'not_found', 'forbidden', 'ok', or
16074: 'bad_request', also attempts to grab the metadata for the
16075: resource. Expects the local filesystem pathname
16076: (/home/httpd/html/res/....)
16077:
16078: =back
16079:
16080: =head2 Resource Information
16081:
16082: =over 4
16083:
16084: =item *
16085:
16086: EXT($varname,$symb,$udom,$uname,$usection,$recurse,$cid) : evaluates
16087: and returns the value of a variety of different possible values,
16088: $varname should be a request string, and the other parameters can be
16089: used to specify who and what one is asking about. Ordinarily, $cid
16090: does not need to be specified, as it is retrived from
16091: $env{'request.course.id'}, but &Apache::lonnet::EXT() is called
16092: within lonuserstate::loadmap() when initializing a course, before
16093: $env{'request.course.id'} has been set, so it needs to be provided
16094: in that one case.
16095:
16096: Possible values for $varname are environment.lastname (or other item
16097: from the envirnment hash), user.name (or someother aspect about the
16098: user), resource.0.maxtries (or some other part and parameter of a
16099: resource)
16100:
16101: =item *
16102:
16103: directcondval($number) : get current value of a condition; reads from a state
16104: string
16105:
16106: =item *
16107:
16108: condval($condidx) : value of condition index based on state
16109:
16110: =item *
16111:
16112: metadata($uri,$what,$toolsymb,$liburi,$prefix,$depthcount) : request a
16113: resource's metadata, $what should be either a specific key, or either
16114: 'keys' (to get a list of possible keys) or 'packages' to get a list of
16115: packages that this resource currently uses, the last 3 arguments are
16116: only used internally for recursive metadata.
16117:
16118: the toolsymb is only used where the uri is for an external tool (for which
16119: the uri as well as the symb are guaranteed to be unique).
16120:
16121: this function automatically caches all requests except any made recursively
16122: to retrieve a list of metadata keys for an imported library file ($liburi is
16123: defined).
16124:
16125: =item *
16126:
16127: metadata_query($query,$custom,$customshow) : make a metadata query against the
16128: network of library servers; returns file handle of where SQL and regex results
16129: will be stored for query
16130:
16131: =item *
16132:
16133: symbread($filename,$donotrecurse,$ignorecachednull,$checkforblock,$possibles) :
16134: return symbolic list entry (all arguments optional).
16135:
16136: Args: filename is the filename (including path) for the file for which a symb
16137: is required; donotrecurse, if true will prevent calls to allowed() being made
16138: to check access status if more than one resource was found in the bighash
16139: (see rev. 1.249) to avoid an infinite loop if an ambiguous resource is part of
16140: a randompick); ignorecachednull, if true will prevent a symb of '' being
16141: returned if $env{$cache_str} is defined as ''; checkforblock if true will
16142: cause possible symbs to be checked to determine if they are subject to content
16143: blocking, if so they will not be included as possible symbs; possibles is a
16144: ref to a hash, which, as a side effect, will be populated with all possible
16145: symbs (content blocking not tested).
16146:
16147: returns the data handle
16148:
16149: =item *
16150:
16151: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
16152: and is a possible symb for the URL in $thisfn, and if is an encrypted
16153: resource that the user accessed using /enc/ returns a 1 on success, 0
16154: on failure, user must be in a course, as it assumes the existence of
16155: the course initial hash, and uses $env('request.course.id'}. The third
16156: arg is an optional reference to a scalar. If this arg is passed in the
16157: call to symbverify, it will be set to 1 if the symb has been set to be
16158: encrypted; otherwise it will be null.
16159:
16160: =item *
16161:
16162: symbclean($symb) : removes versions numbers from a symb, returns the
16163: cleaned symb
16164:
16165: =item *
16166:
16167: is_on_map($uri) : checks if the $uri is somewhere on the current
16168: course map, user must be in a course for it to work.
16169:
16170: =item *
16171:
16172: numval($salt) : return random seed value (addend for rndseed)
16173:
16174: =item *
16175:
16176: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
16177: a random seed, all arguments are optional, if they aren't sent it uses the
16178: environment to derive them. Note: if symb isn't sent and it can't get one
16179: from &symbread it will use the current time as its return value
16180:
16181: =item *
16182:
16183: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
16184: unfakeable, receipt
16185:
16186: =item *
16187:
16188: receipt() : API to ireceipt working off of env values; given out to users
16189:
16190: =item *
16191:
16192: countacc($url) : count the number of accesses to a given URL
16193:
16194: =item *
16195:
16196: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
16197:
16198: =item *
16199:
16200: checkin($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 $tcrsid)
16201:
16202: =item *
16203:
16204: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
16205:
16206: =item *
16207:
16208: devalidate($symb) : devalidate temporary spreadsheet calculations,
16209: forcing spreadsheet to reevaluate the resource scores next time.
16210:
16211: =item *
16212:
16213: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
16214: when viewing in course context.
16215:
16216: input: six args -- filename (decluttered), course number, course domain,
16217: url, symb (if registered) and group (if this is a
16218: group item -- e.g., bulletin board, group page etc.).
16219:
16220: output: array of five scalars --
16221: $cfile -- url for file editing if editable on current server
16222: $home -- homeserver of resource (i.e., for author if published,
16223: or course if uploaded.).
16224: $switchserver -- 1 if server switch will be needed.
16225: $forceedit -- 1 if icon/link should be to go to edit mode
16226: $forceview -- 1 if icon/link should be to go to view mode
16227:
16228: =item *
16229:
16230: is_course_upload($file,$cnum,$cdom)
16231:
16232: Used in course context to determine if current file was uploaded to
16233: the course (i.e., would be found in /userfiles/docs on the course's
16234: homeserver.
16235:
16236: input: 3 args -- filename (decluttered), course number and course domain.
16237: output: boolean -- 1 if file was uploaded.
16238:
16239: =back
16240:
16241: =head2 Storing/Retreiving Data
16242:
16243: =over 4
16244:
16245: =item *
16246:
16247: store($storehash,$symb,$namespace,$udom,$uname,$laststore) : stores hash
16248: permanently for this url; hashref needs to be given and should be a \%hashname;
16249: the remaining args aren't required and if they aren't passed or are '' they will
16250: be derived from the env (with the exception of $laststore, which is an
16251: optional arg used when a user's submission is stored in grading).
16252: $laststore is $version=$timestamp, where $version is the most recent version
16253: number retrieved for the corresponding $symb in the $namespace db file, and
16254: $timestamp is the timestamp for that transaction (UNIX time).
16255: $laststore is currently only passed when cstore() is called by
16256: structuretags::finalize_storage().
16257:
16258: =item *
16259:
16260: cstore($storehash,$symb,$namespace,$udom,$uname,$laststore) : same as store
16261: but uses critical subroutine
16262:
16263: =item *
16264:
16265: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
16266: all args are optional
16267:
16268: =item *
16269:
16270: dumpstore($namespace,$udom,$uname,$regexp,$range) :
16271: dumps the complete (or key matching regexp) namespace into a hash
16272: ($udom, $uname, $regexp, $range are optional) for a namespace that is
16273: normally &store()ed into
16274:
16275: $range should be either an integer '100' (give me the first 100
16276: matching records)
16277: or be two integers sperated by a - with no spaces
16278: '30-50' (give me the 30th through the 50th matching
16279: records)
16280:
16281:
16282: =item *
16283:
16284: putstore($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog) :
16285: replaces a &store() version of data with a replacement set of data
16286: for a particular resource in a namespace passed in the $storehash hash
16287: reference. If $tolog is true, the transaction is logged in the courselog
16288: with an action=PUTSTORE.
16289:
16290: =item *
16291:
16292: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
16293: works very similar to store/cstore, but all data is stored in a
16294: temporary location and can be reset using tmpreset, $storehash should
16295: be a hash reference, returns nothing on success
16296:
16297: =item *
16298:
16299: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
16300: similar to restore, but all data is stored in a temporary location and
16301: can be reset using tmpreset. Returns a hash of values on success,
16302: error string otherwise.
16303:
16304: =item *
16305:
16306: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
16307: deltes all keys for $symb form the temporary storage hash.
16308:
16309: =item *
16310:
16311: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
16312: reference filled in from namesp ($udom and $uname are optional)
16313:
16314: =item *
16315:
16316: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
16317: namesp ($udom and $uname are optional)
16318:
16319: =item *
16320:
16321: dump($namespace,$udom,$uname,$regexp,$range) :
16322: dumps the complete (or key matching regexp) namespace into a hash
16323: ($udom, $uname, $regexp, $range are optional)
16324:
16325: $range should be either an integer '100' (give me the first 100
16326: matching records)
16327: or be two integers sperated by a - with no spaces
16328: '30-50' (give me the 30th through the 50th matching
16329: records)
16330: =item *
16331:
16332: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
16333: $store can be a scalar, an array reference, or if the amount to be
16334: incremented is > 1, a hash reference.
16335:
16336: ($udom and $uname are optional)
16337:
16338: =item *
16339:
16340: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
16341: ($udom and $uname are optional)
16342:
16343: =item *
16344:
16345: cput($namespace,$storehash,$udom,$uname) : critical put
16346: ($udom and $uname are optional)
16347:
16348: =item *
16349:
16350: newput($namespace,$storehash,$udom,$uname) :
16351:
16352: Attempts to store the items in the $storehash, but only if they don't
16353: currently exist, if this succeeds you can be certain that you have
16354: successfully created a new key value pair in the $namespace db.
16355:
16356:
16357: Args:
16358: $namespace: name of database to store values to
16359: $storehash: hashref to store to the db
16360: $udom: (optional) domain of user containing the db
16361: $uname: (optional) name of user caontaining the db
16362:
16363: Returns:
16364: 'ok' -> succeeded in storing all keys of $storehash
16365: 'key_exists: <key>' -> failed to anything out of $storehash, as at
16366: least <key> already existed in the db (other
16367: requested keys may also already exist)
16368: 'error: <msg>' -> unable to tie the DB or other error occurred
16369: 'con_lost' -> unable to contact request server
16370: 'refused' -> action was not allowed by remote machine
16371:
16372:
16373: =item *
16374:
16375: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
16376: reference filled in from namesp (encrypts the return communication)
16377: ($udom and $uname are optional)
16378:
16379: =item *
16380:
16381: log($udom,$name,$home,$message) : write to permanent log for user; use
16382: critical subroutine
16383:
16384: =item *
16385:
16386: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
16387: array reference filled in from namespace found in domain level on either
16388: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
16389:
16390: =item *
16391:
16392: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
16393: domain level either on specified domain server ($uhome) or primary domain
16394: server ($udom and $uhome are optional)
16395:
16396: =item *
16397:
16398: get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults
16399: for: authentication, language, quotas, timezone, date locale, and portal URL in
16400: the target domain.
16401:
16402: May also include additional key => value pairs for the following groups:
16403:
16404: =over
16405:
16406: =item
16407: disk quotas (MB allocated by default to portfolios and authoring spaces).
16408:
16409: =over
16410:
16411: =item defaultquota, authorquota
16412:
16413: =back
16414:
16415: =item
16416: tools (availability of aboutme page, blog, webDAV access for authoring spaces,
16417: portfolio for users).
16418:
16419: =over
16420:
16421: =item
16422: aboutme, blog, webdav, portfolio
16423:
16424: =back
16425:
16426: =item
16427: requestcourses: ability to request courses, and how requests are processed.
16428:
16429: =over
16430:
16431: =item
16432: official, unofficial, community, textbook, placement
16433:
16434: =back
16435:
16436: =item
16437: inststatus: types of institutional affiliation, and order in which they are displayed.
16438:
16439: =over
16440:
16441: =item
16442: inststatustypes, inststatusorder, inststatusguest
16443:
16444: =back
16445:
16446: =item
16447: coursedefaults: can PDF forms can be created, default credits for courses, default quotas (MB)
16448: for course's uploaded content.
16449:
16450: =over
16451:
16452: =item
16453: canuse_pdfforms, officialcredits, unofficialcredits, textbookcredits, officialquota, unofficialquota,
16454: communityquota, textbookquota, placementquota
16455:
16456: =back
16457:
16458: =item
16459: usersessions: set options for hosting of your users in other domains, and hosting of users from other domains
16460: on your servers.
16461:
16462: =over
16463:
16464: =item
16465: remotesessions, hostedsessions
16466:
16467: =back
16468:
16469: =back
16470:
16471: In cases where a domain coordinator has never used the "Set Domain Configuration"
16472: utility to create a configuration.db file on a domain's primary library server
16473: only the following domain defaults: auth_def, auth_arg_def, lang_def
16474: -- corresponding values are authentication type (internal, krb4, krb5,
16475: or localauth), initial password or a kerberos realm, language (e.g., en-us) --
16476: will be available. Values are retrieved from cache (if current), unless the
16477: optional $ignore_cache arg is true, or from domain's configuration.db (if available),
16478: or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab.
16479:
16480: Typical usage:
16481:
16482: %domdefaults = &get_domain_defaults($target_domain);
16483:
16484: =back
16485:
16486: =head2 Network Status Functions
16487:
16488: =over 4
16489:
16490: =item *
16491:
16492: dirlist() : return directory list based on URI (first arg).
16493:
16494: Inputs: 1 required, 5 optional.
16495:
16496: =over
16497:
16498: =item
16499: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
16500:
16501: =item
16502: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
16503:
16504: =item
16505: $username - username of user/course to be listed. Extracted from $uri if absent.
16506:
16507: =item
16508: $getpropath - boolean: 1 if prepend path using &propath().
16509:
16510: =item
16511: $getuserdir - boolean: 1 if prepend path for "userfiles".
16512:
16513: =item
16514: $alternateRoot - path to prepend in place of path from $uri.
16515:
16516: =back
16517:
16518: Returns: Array of up to two items.
16519:
16520: =over
16521:
16522: a reference to an array of files/subdirectories
16523:
16524: =over
16525:
16526: Each element in the array of files/subdirectories is a & separated list of
16527: item name and the result of running stat on the item. If dirlist was requested
16528: for a file instead of a directory, the item name will be ''. For a directory
16529: listing, if the item is a metadata file, the element will end &N&M
16530: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
16531: default copyright set (1).
16532:
16533: =back
16534:
16535: a scalar containing error condition (if encountered).
16536:
16537: =over
16538:
16539: =item
16540: no_host (no homeserver identified for $username:$domain).
16541:
16542: =item
16543: no_such_host (server contacted for listing not identified as valid host).
16544:
16545: =item
16546: con_lost (connection to remote server failed).
16547:
16548: =item
16549: refused (invalid $username:$domain received on lond side).
16550:
16551: =item
16552: no_such_dir (directory at specified path on lond side does not exist).
16553:
16554: =item
16555: empty (directory at specified path on lond side is empty).
16556:
16557: =over
16558:
16559: This is currently not encountered because the &ls3, &ls2,
16560: &ls (_handler) routines on the lond side do not filter out
16561: . and .. from a directory listing.
16562:
16563: =back
16564:
16565: =back
16566:
16567: =back
16568:
16569: =item *
16570:
16571: spareserver() : find server with least workload from spare.tab
16572:
16573:
16574: =item *
16575:
16576: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
16577: if there is no corresponding loncapa host.
16578:
16579: =back
16580:
16581:
16582: =head2 Apache Request
16583:
16584: =over 4
16585:
16586: =item *
16587:
16588: ssi($url,%hash) : server side include, does a complete request cycle on url to
16589: localhost, posts hash
16590:
16591: =back
16592:
16593: =head2 Data to String to Data
16594:
16595: =over 4
16596:
16597: =item *
16598:
16599: hash2str(%hash) : convert a hash into a string complete with escaping and '='
16600: and '&' separators, supports elements that are arrayrefs and hashrefs
16601:
16602: =item *
16603:
16604: hashref2str($hashref) : convert a hashref into a string complete with
16605: escaping and '=' and '&' separators, supports elements that are
16606: arrayrefs and hashrefs
16607:
16608: =item *
16609:
16610: arrayref2str($arrayref) : convert an arrayref into a string complete
16611: with escaping and '&' separators, supports elements that are arrayrefs
16612: and hashrefs
16613:
16614: =item *
16615:
16616: str2hash($string) : convert string to hash using unescaping and
16617: splitting on '=' and '&', supports elements that are arrayrefs and
16618: hashrefs
16619:
16620: =item *
16621:
16622: str2array($string) : convert string to hash using unescaping and
16623: splitting on '&', supports elements that are arrayrefs and hashrefs
16624:
16625: =back
16626:
16627: =head2 Logging Routines
16628:
16629:
16630: These routines allow one to make log messages in the lonnet.log and
16631: lonnet.perm logfiles.
16632:
16633: =over 4
16634:
16635: =item *
16636:
16637: logtouch() : make sure the logfile, lonnet.log, exists
16638:
16639: =item *
16640:
16641: logthis() : append message to the normal lonnet.log file, it gets
16642: preiodically rolled over and deleted.
16643:
16644: =item *
16645:
16646: logperm() : append a permanent message to lonnet.perm.log, this log
16647: file never gets deleted by any automated portion of the system, only
16648: messages of critical importance should go in here.
16649:
16650:
16651: =back
16652:
16653: =head2 General File Helper Routines
16654:
16655: =over 4
16656:
16657: =item *
16658:
16659: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
16660: (a) files in /uploaded
16661: (i) If a local copy of the file exists -
16662: compares modification date of local copy with last-modified date for
16663: definitive version stored on home server for course. If local copy is
16664: stale, requests a new version from the home server and stores it.
16665: If the original has been removed from the home server, then local copy
16666: is unlinked.
16667: (ii) If local copy does not exist -
16668: requests the file from the home server and stores it.
16669:
16670: If $caller is 'uploadrep':
16671: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
16672: for request for files originally uploaded via DOCS.
16673: - returns 'ok' if fresh local copy now available, -1 otherwise.
16674:
16675: Otherwise:
16676: This indicates a call from the content generation phase of the request.
16677: - returns the entire contents of the file or -1.
16678:
16679: (b) files in /res
16680: - returns the entire contents of a file or -1;
16681: it properly subscribes to and replicates the file if neccessary.
16682:
16683:
16684: =item *
16685:
16686: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
16687: reference
16688:
16689: returns either a stat() list of data about the file or an empty list
16690: if the file doesn't exist or couldn't find out about it (connection
16691: problems or user unknown)
16692:
16693: =item *
16694:
16695: filelocation($dir,$file) : returns file system location of a file
16696: based on URI; meant to be "fairly clean" absolute reference, $dir is a
16697: directory that relative $file lookups are to looked in ($dir of /a/dir
16698: and a file of ../bob will become /a/bob)
16699:
16700: =item *
16701:
16702: hreflocation($dir,$file) : returns file system location or a URL; same as
16703: filelocation except for hrefs
16704:
16705: =item *
16706:
16707: declutter() : declutters URLs -- remove beginning slashes, 'res' etc.
16708: also removes beginning /home/httpd/html unless /priv/ follows it.
16709:
16710: =back
16711:
16712: =head2 Usererfile file routines (/uploaded*)
16713:
16714: =over 4
16715:
16716: =item *
16717:
16718: userfileupload(): main rotine for putting a file in a user or course's
16719: filespace, arguments are,
16720:
16721: formname - required - this is the name of the element in $env where the
16722: filename, and the contents of the file to create/modifed exist
16723: the filename is in $env{'form.'.$formname.'.filename'} and the
16724: contents of the file is located in $env{'form.'.$formname}
16725: context - if coursedoc, store the file in the course of the active role
16726: of the current user;
16727: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
16728: if 'canceloverwrite': delete file in tmp/overwrites directory
16729: subdir - required - subdirectory to put the file in under ../userfiles/
16730: if undefined, it will be placed in "unknown"
16731:
16732: (This routine calls clean_filename() to remove any dangerous
16733: characters from the filename, and then calls finuserfileupload() to
16734: complete the transaction)
16735:
16736: returns either the url of the uploaded file (/uploaded/....) if successful
16737: and /adm/notfound.html if unsuccessful
16738:
16739: =item *
16740:
16741: clean_filename(): routine for cleaing a filename up for storage in
16742: userfile space, argument is:
16743:
16744: filename - proposed filename
16745:
16746: returns: the new clean filename
16747:
16748: =item *
16749:
16750: finishuserfileupload(): routine that creates and sends the file to
16751: userspace, probably shouldn't be called directly
16752:
16753: docuname: username or courseid of destination for the file
16754: docudom: domain of user/course of destination for the file
16755: formname: same as for userfileupload()
16756: fname: filename (including subdirectories) for the file
16757: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
16758: if hashref, and context is scantron, will convert csv format to standard format
16759: allfiles: reference to hash used to store objects found by parser
16760: codebase: reference to hash used for codebases of java objects found by parser
16761: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
16762: thumbheight: height (pixels) of thumbnail to be created for uploaded image
16763: resizewidth: width to be used to resize image using resizeImage from ImageMagick
16764: resizeheight: height to be used to resize image using resizeImage from ImageMagick
16765: context: if 'overwrite', will move the uploaded file from its temporary location to
16766: userfiles to facilitate overwriting a previously uploaded file with same name.
16767: mimetype: reference to scalar to accommodate mime type determined
16768: from File::MMagic if $parser = parse.
16769:
16770: returns either the url of the uploaded file (/uploaded/....) if successful
16771: and /adm/notfound.html if unsuccessful (or an error message if context
16772: was 'overwrite').
16773:
16774:
16775: =item *
16776:
16777: renameuserfile(): renames an existing userfile to a new name
16778:
16779: Args:
16780: docuname: username or courseid of destination for the file
16781: docudom: domain of user/course of destination for the file
16782: old: current file name (including any subdirs under userfiles)
16783: new: desired file name (including any subdirs under userfiles)
16784:
16785: =item *
16786:
16787: mkdiruserfile(): creates a directory is a userfiles dir
16788:
16789: Args:
16790: docuname: username or courseid of destination for the file
16791: docudom: domain of user/course of destination for the file
16792: dir: dir to create (including any subdirs under userfiles)
16793:
16794: =item *
16795:
16796: removeuserfile(): removes a file that exists in userfiles
16797:
16798: Args:
16799: docuname: username or courseid of destination for the file
16800: docudom: domain of user/course of destination for the file
16801: fname: filname to delete (including any subdirs under userfiles)
16802:
16803: =item *
16804:
16805: removeuploadedurl(): convience function for removeuserfile()
16806:
16807: Args:
16808: url: a full /uploaded/... url to delete
16809:
16810: =item *
16811:
16812: get_portfile_permissions():
16813: Args:
16814: domain: domain of user or course contain the portfolio files
16815: user: name of user or num of course contain the portfolio files
16816: Returns:
16817: hashref of a dump of the proper file_permissions.db
16818:
16819:
16820: =item *
16821:
16822: get_access_controls():
16823:
16824: Args:
16825: current_permissions: the hash ref returned from get_portfile_permissions()
16826: group: (optional) the group you want the files associated with
16827: file: (optional) the file you want access info on
16828:
16829: Returns:
16830: a hash (keys are file names) of hashes containing
16831: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
16832: values are XML containing access control settings (see below)
16833:
16834: Internal notes:
16835:
16836: access controls are stored in file_permissions.db as key=value pairs.
16837: key -> path to file/file_name\0uniqueID:scope_end_start
16838: where scope -> public,guest,course,group,domains or users.
16839: end -> UNIX time for end of access (0 -> no end date)
16840: start -> UNIX time for start of access
16841:
16842: value -> XML description of access control
16843: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
16844: <start></start>
16845: <end></end>
16846:
16847: <password></password> for scope type = guest
16848:
16849: <domain></domain> for scope type = course or group
16850: <number></number>
16851: <roles id="">
16852: <role></role>
16853: <access></access>
16854: <section></section>
16855: <group></group>
16856: </roles>
16857:
16858: <dom></dom> for scope type = domains
16859:
16860: <users> for scope type = users
16861: <user>
16862: <uname></uname>
16863: <udom></udom>
16864: </user>
16865: </users>
16866: </scope>
16867:
16868: Access data is also aggregated for each file in an additional key=value pair:
16869: key -> path to file/file_name\0accesscontrol
16870: value -> reference to hash
16871: hash contains key = value pairs
16872: where key = uniqueID:scope_end_start
16873: value = UNIX time record was last updated
16874:
16875: Used to improve speed of look-ups of access controls for each file.
16876:
16877: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
16878:
16879: =item *
16880:
16881: modify_access_controls():
16882:
16883: Modifies access controls for a portfolio file
16884: Args
16885: 1. file name
16886: 2. reference to hash of required changes,
16887: 3. domain
16888: 4. username
16889: where domain,username are the domain of the portfolio owner
16890: (either a user or a course)
16891:
16892: Returns:
16893: 1. result of additions or updates ('ok' or 'error', with error message).
16894: 2. result of deletions ('ok' or 'error', with error message).
16895: 3. reference to hash of any new or updated access controls.
16896: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
16897: key = integer (inbound ID)
16898: value = uniqueID
16899:
16900: =item *
16901:
16902: get_timebased_id():
16903:
16904: Attempts to get a unique timestamp-based suffix for use with items added to a
16905: course via the Course Editor (e.g., folders, composite pages,
16906: group bulletin boards).
16907:
16908: Args: (first three required; six others optional)
16909:
16910: 1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
16911: docssequence, or name of group
16912:
16913: 2. keyid (alphanumeric): name of temporary locking key in hash,
16914: e.g., num, boardids
16915:
16916: 3. namespace: name of gdbm file used to store suffixes already assigned;
16917: file will be named nohist_namespace.db
16918:
16919: 4. cdom: domain of course; default is current course domain from %env
16920:
16921: 5. cnum: course number; default is current course number from %env
16922:
16923: 6. idtype: set to concat if an additional digit is to be appended to the
16924: unix timestamp to form the suffix, if the plain timestamp is already
16925: in use. Default is to not do this, but simply increment the unix
16926: timestamp by 1 until a unique key is obtained.
16927:
16928: 7. who: holder of locking key; defaults to user:domain for user.
16929:
16930: 8. locktries: number of attempts to obtain a lock (sleep of 1s before
16931: retrying); default is 3.
16932:
16933: 9. maxtries: number of attempts to obtain a unique suffix; default is 20.
16934:
16935: Returns:
16936:
16937: 1. suffix obtained (numeric)
16938:
16939: 2. result of deleting locking key (ok if deleted, or lock never obtained)
16940:
16941: 3. error: contains (localized) error message if an error occurred.
16942:
16943:
16944: =back
16945:
16946: =head2 HTTP Helper Routines
16947:
16948: =over 4
16949:
16950: =item *
16951:
16952: escape() : unpack non-word characters into CGI-compatible hex codes
16953:
16954: =item *
16955:
16956: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
16957:
16958: =back
16959:
16960: =head1 PRIVATE SUBROUTINES
16961:
16962: =head2 Underlying communication routines (Shouldn't call)
16963:
16964: =over 4
16965:
16966: =item *
16967:
16968: subreply() : tries to pass a message to lonc, returns con_lost if incapable
16969:
16970: =item *
16971:
16972: reply() : uses subreply to send a message to remote machine, logs all failures
16973:
16974: =item *
16975:
16976: critical() : passes a critical message to another server; if cannot
16977: get through then place message in connection buffer directory and
16978: returns con_delayed, if incapable of saving message, returns
16979: con_failed
16980:
16981: =item *
16982:
16983: reconlonc() : tries to reconnect lonc client processes.
16984:
16985: =back
16986:
16987: =head2 Resource Access Logging
16988:
16989: =over 4
16990:
16991: =item *
16992:
16993: flushcourselogs() : flush (save) buffer logs and access logs
16994:
16995: =item *
16996:
16997: courselog($what) : save message for course in hash
16998:
16999: =item *
17000:
17001: courseacclog($what) : save message for course using &courselog(). Perform
17002: special processing for specific resource types (problems, exams, quizzes, etc).
17003:
17004: =item *
17005:
17006: goodbye() : flush course logs and log shutting down; it is called in srm.conf
17007: as a PerlChildExitHandler
17008:
17009: =back
17010:
17011: =head2 Other
17012:
17013: =over 4
17014:
17015: =item *
17016:
17017: symblist($mapname,%newhash) : update symbolic storage links
17018:
17019: =back
17020:
17021: =cut
17022:
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