1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1463 2021/08/04 21:06:33 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: =pod
31:
32: =head1 NAME
33:
34: Apache::lonnet.pm
35:
36: =head1 SYNOPSIS
37:
38: This file is an interface to the lonc processes of
39: the LON-CAPA network as well as set of elaborated functions for handling information
40: necessary for navigating through a given cluster of LON-CAPA machines within a
41: domain. There are over 40 specialized functions in this module which handle the
42: reading and transmission of metadata, user information (ids, names, environments, roles,
43: logs), file information (storage, reading, directories, extensions, replication, embedded
44: styles and descriptors), educational resources (course descriptions, section names and
45: numbers), url hashing (to assign roles on a url basis), and translating abbreviated symbols to
46: and from more descriptive phrases or explanations.
47:
48: This is part of the LearningOnline Network with CAPA project
49: described at http://www.lon-capa.org.
50:
51: =head1 Package Variables
52:
53: These are largely undocumented, so if you decipher one please note it here.
54:
55: =over 4
56:
57: =item $processmarker
58:
59: Contains the time this process was started and this servers host id.
60:
61: =item $dumpcount
62:
63: Counts the number of times a message log flush has been attempted (regardless
64: of success) by this process. Used as part of the filename when messages are
65: delayed.
66:
67: =back
68:
69: =cut
70:
71: package Apache::lonnet;
72:
73: use strict;
74: use HTTP::Date;
75: use Image::Magick;
76: use CGI::Cookie;
77:
78: use Encode;
79:
80: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir $deftex
81: $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease
82: %managerstab $passwdmin);
83:
84: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
85: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
86: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
87: %courseownerbuf, %coursetypebuf,$locknum);
88:
89: use IO::Socket;
90: use GDBM_File;
91: use HTML::LCParser;
92: use Fcntl qw(:flock);
93: use Storable qw(thaw nfreeze);
94: use Time::HiRes qw( sleep gettimeofday tv_interval );
95: use Cache::Memcached;
96: use Digest::MD5;
97: use Math::Random;
98: use File::MMagic;
99: use Net::CIDR;
100: use Sys::Hostname::FQDN();
101: use LONCAPA qw(:DEFAULT :match);
102: use LONCAPA::Configuration;
103: use LONCAPA::lonmetadata;
104: use LONCAPA::Lond;
105: use LONCAPA::LWPReq;
106: use LONCAPA::transliterate;
107:
108: use File::Copy;
109:
110: my $readit;
111: my $max_connection_retries = 20; # Or some such value.
112:
113: require Exporter;
114:
115: our @ISA = qw (Exporter);
116: our @EXPORT = qw(%env);
117:
118:
119: # ------------------------------------ Logging (parameters, docs, slots, roles)
120: {
121: my $logid;
122: sub write_log {
123: my ($context,$hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
124: if ($context eq 'course') {
125: if (($cnum eq '') || ($cdom eq '')) {
126: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
127: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
128: }
129: }
130: $logid ++;
131: my $now = time();
132: my $id=$now.'00000'.$$.'00000'.$logid;
133: my $ip = &get_requestor_ip();
134: my $logentry = {
135: $id => {
136: 'exe_uname' => $env{'user.name'},
137: 'exe_udom' => $env{'user.domain'},
138: 'exe_time' => $now,
139: 'exe_ip' => $ip,
140: 'delflag' => $delflag,
141: 'logentry' => $storehash,
142: 'uname' => $uname,
143: 'udom' => $udom,
144: }
145: };
146: return &put('nohist_'.$hash_name,$logentry,$cdom,$cnum);
147: }
148: }
149:
150: sub logtouch {
151: my $execdir=$perlvar{'lonDaemons'};
152: unless (-e "$execdir/logs/lonnet.log") {
153: open(my $fh,">>","$execdir/logs/lonnet.log");
154: close $fh;
155: }
156: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
157: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
158: }
159:
160: sub logthis {
161: my $message=shift;
162: my $execdir=$perlvar{'lonDaemons'};
163: my $now=time;
164: my $local=localtime($now);
165: if (open(my $fh,">>","$execdir/logs/lonnet.log")) {
166: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
167: print $fh $logstring;
168: close($fh);
169: }
170: return 1;
171: }
172:
173: sub logperm {
174: my $message=shift;
175: my $execdir=$perlvar{'lonDaemons'};
176: my $now=time;
177: my $local=localtime($now);
178: if (open(my $fh,">>","$execdir/logs/lonnet.perm.log")) {
179: print $fh "$now:$message:$local\n";
180: close($fh);
181: }
182: return 1;
183: }
184:
185: sub create_connection {
186: my ($hostname,$lonid) = @_;
187: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
188: Type => SOCK_STREAM,
189: Timeout => 10);
190: return 0 if (!$client);
191: print $client (join(':',$hostname,$lonid,&machine_ids($hostname),$loncaparevs{$lonid})."\n");
192: my $result = <$client>;
193: chomp($result);
194: return 1 if ($result eq 'done');
195: return 0;
196: }
197:
198: sub get_server_timezone {
199: my ($cnum,$cdom) = @_;
200: my $home=&homeserver($cnum,$cdom);
201: if ($home ne 'no_host') {
202: my $cachetime = 24*3600;
203: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
204: if (defined($cached)) {
205: return $timezone;
206: } else {
207: my $timezone = &reply('servertimezone',$home);
208: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
209: }
210: }
211: }
212:
213: sub get_server_distarch {
214: my ($lonhost,$ignore_cache) = @_;
215: if (defined($lonhost)) {
216: if (!defined(&hostname($lonhost))) {
217: return;
218: }
219: my $cachetime = 12*3600;
220: if (!$ignore_cache) {
221: my ($distarch,$cached)=&is_cached_new('serverdistarch',$lonhost);
222: if (defined($cached)) {
223: return $distarch;
224: }
225: }
226: my $rep = &reply('serverdistarch',$lonhost);
227: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
228: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
229: $rep eq '') {
230: return &do_cache_new('serverdistarch',$lonhost,$rep,$cachetime);
231: }
232: }
233: return;
234: }
235:
236: sub get_servercerts_info {
237: my ($lonhost,$hostname,$context) = @_;
238: return if ($lonhost eq '');
239: if ($hostname eq '') {
240: $hostname = &hostname($lonhost);
241: }
242: return if ($hostname eq '');
243: my ($rep,$uselocal);
244: if ($context eq 'install') {
245: $uselocal = 1;
246: } elsif (grep { $_ eq $lonhost } ¤t_machine_ids()) {
247: $uselocal = 1;
248: }
249: if (($context ne 'cgi') && ($context ne 'install') && ($uselocal)) {
250: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
251: if ($distro eq '') {
252: $uselocal = 0;
253: } elsif ($distro =~ /^(?:centos|redhat|scientific)(\d+)$/) {
254: if ($1 < 6) {
255: $uselocal = 0;
256: }
257: } elsif ($distro =~ /^(?:sles)(\d+)$/) {
258: if ($1 < 12) {
259: $uselocal = 0;
260: }
261: }
262: }
263: if ($uselocal) {
264: $rep = LONCAPA::Lond::server_certs(\%perlvar,$lonhost,$hostname);
265: } else {
266: $rep=&reply('servercerts',$lonhost);
267: }
268: my ($result,%returnhash);
269: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
270: ($rep eq 'unknown_cmd')) {
271: $result = $rep;
272: } else {
273: $result = 'ok';
274: my @pairs=split(/\&/,$rep);
275: foreach my $item (@pairs) {
276: my ($key,$value)=split(/=/,$item,2);
277: my $what = &unescape($key);
278: $returnhash{$what}=&thaw_unescape($value);
279: }
280: }
281: return ($result,\%returnhash);
282: }
283:
284: sub get_server_loncaparev {
285: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
286: if (defined($lonhost)) {
287: if (!defined(&hostname($lonhost))) {
288: undef($lonhost);
289: }
290: }
291: if (!defined($lonhost)) {
292: if (defined(&domain($dom,'primary'))) {
293: $lonhost=&domain($dom,'primary');
294: if ($lonhost eq 'no_host') {
295: undef($lonhost);
296: }
297: }
298: }
299: if (defined($lonhost)) {
300: my $cachetime = 12*3600;
301: if (!$ignore_cache) {
302: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
303: if (defined($cached)) {
304: return $loncaparev;
305: }
306: }
307: my ($answer,$loncaparev);
308: my @ids=¤t_machine_ids();
309: if (grep(/^\Q$lonhost\E$/,@ids)) {
310: $answer = $perlvar{'lonVersion'};
311: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
312: $loncaparev = $1;
313: }
314: } else {
315: $answer = &reply('serverloncaparev',$lonhost);
316: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
317: if ($caller eq 'loncron') {
318: my $hostname = &hostname($lonhost);
319: my $protocol = $protocol{$lonhost};
320: $protocol = 'http' if ($protocol ne 'https');
321: my $url = $protocol.'://'.$hostname.'/adm/about.html';
322: my $request=new HTTP::Request('GET',$url);
323: my $response=&LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,4,1);
324: unless ($response->is_error()) {
325: my $content = $response->content;
326: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
327: $loncaparev = $1;
328: }
329: }
330: } else {
331: $loncaparev = $loncaparevs{$lonhost};
332: }
333: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
334: $loncaparev = $1;
335: }
336: }
337: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
338: }
339: }
340:
341: sub get_server_homeID {
342: my ($hostname,$ignore_cache,$caller) = @_;
343: unless ($ignore_cache) {
344: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
345: if (defined($cached)) {
346: return $serverhomeID;
347: }
348: }
349: my $cachetime = 12*3600;
350: my $serverhomeID;
351: if ($caller eq 'loncron') {
352: my @machine_ids = &machine_ids($hostname);
353: foreach my $id (@machine_ids) {
354: my $response = &reply('serverhomeID',$id);
355: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
356: $serverhomeID = $response;
357: last;
358: }
359: }
360: if ($serverhomeID eq '') {
361: $serverhomeID = $machine_ids[-1];
362: }
363: } else {
364: $serverhomeID = $serverhomeIDs{$hostname};
365: }
366: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
367: }
368:
369: sub get_remote_globals {
370: my ($lonhost,$whathash,$ignore_cache) = @_;
371: my ($result,%returnhash,%whatneeded);
372: if (ref($whathash) eq 'HASH') {
373: foreach my $what (sort(keys(%{$whathash}))) {
374: my $hashid = $lonhost.'-'.$what;
375: my ($response,$cached);
376: unless ($ignore_cache) {
377: ($response,$cached)=&is_cached_new('lonnetglobal',$hashid);
378: }
379: if (defined($cached)) {
380: $returnhash{$what} = $response;
381: } else {
382: $whatneeded{$what} = 1;
383: }
384: }
385: if (keys(%whatneeded) == 0) {
386: $result = 'ok';
387: } else {
388: my $requested = &freeze_escape(\%whatneeded);
389: my $rep=&reply('readlonnetglobal:'.$requested,$lonhost);
390: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
391: ($rep eq 'unknown_cmd')) {
392: $result = $rep;
393: } else {
394: $result = 'ok';
395: my @pairs=split(/\&/,$rep);
396: foreach my $item (@pairs) {
397: my ($key,$value)=split(/=/,$item,2);
398: my $what = &unescape($key);
399: my $hashid = $lonhost.'-'.$what;
400: $returnhash{$what}=&thaw_unescape($value);
401: &do_cache_new('lonnetglobal',$hashid,$returnhash{$what},600);
402: }
403: }
404: }
405: }
406: return ($result,\%returnhash);
407: }
408:
409: sub remote_devalidate_cache {
410: my ($lonhost,$cachekeys) = @_;
411: my $items;
412: return unless (ref($cachekeys) eq 'ARRAY');
413: my $cachestr = join('&',@{$cachekeys});
414: my $response = &reply('devalidatecache:'.&escape($cachestr),$lonhost);
415: return $response;
416: }
417:
418: # -------------------------------------------------- Non-critical communication
419: sub subreply {
420: my ($cmd,$server)=@_;
421: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
422: #
423: # With loncnew process trimming, there's a timing hole between lonc server
424: # process exit and the master server picking up the listen on the AF_UNIX
425: # socket. In that time interval, a lock file will exist:
426:
427: my $lockfile=$peerfile.".lock";
428: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
429: sleep(0.1);
430: }
431: # At this point, either a loncnew parent is listening or an old lonc
432: # or loncnew child is listening so we can connect or everything's dead.
433: #
434: # We'll give the connection a few tries before abandoning it. If
435: # connection is not possible, we'll con_lost back to the client.
436: #
437: my $client;
438: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
439: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
440: Type => SOCK_STREAM,
441: Timeout => 10);
442: if ($client) {
443: last; # Connected!
444: } else {
445: &create_connection(&hostname($server),$server);
446: }
447: sleep(0.1); # Try again later if failed connection.
448: }
449: my $answer;
450: if ($client) {
451: print $client "sethost:$server:$cmd\n";
452: $answer=<$client>;
453: if (!$answer) { $answer="con_lost"; }
454: chomp($answer);
455: } else {
456: $answer = 'con_lost'; # Failed connection.
457: }
458: return $answer;
459: }
460:
461: sub reply {
462: my ($cmd,$server)=@_;
463: unless (defined(&hostname($server))) { return 'no_such_host'; }
464: my $answer=subreply($cmd,$server);
465: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
466: my $logged = $cmd;
467: if ($cmd =~ /^encrypt:([^:]+):/) {
468: my $subcmd = $1;
469: if (($subcmd eq 'auth') || ($subcmd eq 'passwd') ||
470: ($subcmd eq 'changeuserauth') || ($subcmd eq 'makeuser') ||
471: ($subcmd eq 'putdom') || ($subcmd eq 'autoexportgrades') ||
472: ($subcmd eq 'put')) {
473: (undef,undef,my @rest) = split(/:/,$cmd);
474: if (($subcmd eq 'auth') || ($subcmd eq 'putdom')) {
475: splice(@rest,2,1,'Hidden');
476: } elsif ($subcmd eq 'passwd') {
477: splice(@rest,2,2,('Hidden','Hidden'));
478: } elsif (($subcmd eq 'changeuserauth') || ($subcmd eq 'makeuser') ||
479: ($subcmd eq 'autoexportgrades') || ($subcmd eq 'put')) {
480: splice(@rest,3,1,'Hidden');
481: }
482: $logged = join(':',('encrypt:'.$subcmd,@rest));
483: }
484: }
485: &logthis("<font color=\"blue\">WARNING:".
486: " $logged to $server returned $answer</font>");
487: }
488: return $answer;
489: }
490:
491: # ----------------------------------------------------------- Send USR1 to lonc
492:
493: sub reconlonc {
494: my ($lonid) = @_;
495: if ($lonid) {
496: my $hostname = &hostname($lonid);
497: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
498: if ($hostname && -e $peerfile) {
499: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
500: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
501: Type => SOCK_STREAM,
502: Timeout => 10);
503: if ($client) {
504: print $client ("reset_retries\n");
505: my $answer=<$client>;
506: #reset just this one.
507: }
508: }
509: return;
510: }
511:
512: &logthis("Trying to reconnect lonc");
513: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
514: if (open(my $fh,"<",$loncfile)) {
515: my $loncpid=<$fh>;
516: chomp($loncpid);
517: if (kill 0 => $loncpid) {
518: &logthis("lonc at pid $loncpid responding, sending USR1");
519: kill USR1 => $loncpid;
520: sleep 1;
521: } else {
522: &logthis(
523: "<font color=\"blue\">WARNING:".
524: " lonc at pid $loncpid not responding, giving up</font>");
525: }
526: } else {
527: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
528: }
529: }
530:
531: # ------------------------------------------------------ Critical communication
532:
533: sub critical {
534: my ($cmd,$server)=@_;
535: unless (&hostname($server)) {
536: &logthis("<font color=\"blue\">WARNING:".
537: " Critical message to unknown server ($server)</font>");
538: return 'no_such_host';
539: }
540: my $answer=reply($cmd,$server);
541: if ($answer eq 'con_lost') {
542: &reconlonc($server);
543: my $answer=reply($cmd,$server);
544: if ($answer eq 'con_lost') {
545: my $now=time;
546: my $middlename=$cmd;
547: $middlename=substr($middlename,0,16);
548: $middlename=~s/\W//g;
549: my $dfilename=
550: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
551: $dumpcount++;
552: {
553: my $dfh;
554: if (open($dfh,">",$dfilename)) {
555: print $dfh "$cmd\n";
556: close($dfh);
557: }
558: }
559: sleep 1;
560: my $wcmd='';
561: {
562: my $dfh;
563: if (open($dfh,"<",$dfilename)) {
564: $wcmd=<$dfh>;
565: close($dfh);
566: }
567: }
568: chomp($wcmd);
569: if ($wcmd eq $cmd) {
570: &logthis("<font color=\"blue\">WARNING: ".
571: "Connection buffer $dfilename: $cmd</font>");
572: &logperm("D:$server:$cmd");
573: return 'con_delayed';
574: } else {
575: &logthis("<font color=\"red\">CRITICAL:"
576: ." Critical connection failed: $server $cmd</font>");
577: &logperm("F:$server:$cmd");
578: return 'con_failed';
579: }
580: }
581: }
582: return $answer;
583: }
584:
585: # ------------------------------------------- check if return value is an error
586:
587: sub error {
588: my ($result) = @_;
589: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
590: if ($2 == 2) { return undef; }
591: return $1;
592: }
593: return undef;
594: }
595:
596: sub convert_and_load_session_env {
597: my ($lonidsdir,$handle)=@_;
598: my @profile;
599: {
600: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
601: if (!$opened) {
602: return 0;
603: }
604: flock($idf,LOCK_SH);
605: @profile=<$idf>;
606: close($idf);
607: }
608: my %temp_env;
609: foreach my $line (@profile) {
610: if ($line !~ m/=/) {
611: return 0;
612: }
613: chomp($line);
614: my ($envname,$envvalue)=split(/=/,$line,2);
615: $temp_env{&unescape($envname)} = &unescape($envvalue);
616: }
617: unlink("$lonidsdir/$handle.id");
618: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
619: 0640)) {
620: %disk_env = %temp_env;
621: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
622: untie(%disk_env);
623: }
624: return 1;
625: }
626:
627: # ------------------------------------------- Transfer profile into environment
628: my $env_loaded;
629: sub transfer_profile_to_env {
630: my ($lonidsdir,$handle,$force_transfer) = @_;
631: if (!$force_transfer && $env_loaded) { return; }
632:
633: if (!defined($lonidsdir)) {
634: $lonidsdir = $perlvar{'lonIDsDir'};
635: }
636: if (!defined($handle)) {
637: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
638: }
639:
640: my $convert;
641: {
642: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
643: if (!$opened) {
644: return;
645: }
646: flock($idf,LOCK_SH);
647: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
648: &GDBM_READER(),0640)) {
649: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
650: untie(%disk_env);
651: } else {
652: $convert = 1;
653: }
654: }
655: if ($convert) {
656: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
657: &logthis("Failed to load session, or convert session.");
658: }
659: }
660:
661: my %remove;
662: while ( my $envname = each(%env) ) {
663: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
664: if ($time < time-300) {
665: $remove{$key}++;
666: }
667: }
668: }
669:
670: $env{'user.environment'} = "$lonidsdir/$handle.id";
671: $env_loaded=1;
672: foreach my $expired_key (keys(%remove)) {
673: &delenv($expired_key);
674: }
675: }
676:
677: # ---------------------------------------------------- Check for valid session
678: sub check_for_valid_session {
679: my ($r,$name,$userhashref,$domref) = @_;
680: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
681: my ($lonidsdir,$linkname,$pubname,$secure,$lonid);
682: if ($name eq 'lonDAV') {
683: $lonidsdir=$r->dir_config('lonDAVsessDir');
684: } else {
685: $lonidsdir=$r->dir_config('lonIDsDir');
686: if ($name eq '') {
687: $name = 'lonID';
688: }
689: }
690: if ($name eq 'lonID') {
691: $secure = 'lonSID';
692: $linkname = 'lonLinkID';
693: $pubname = 'lonPubID';
694: if (exists($cookies{$secure})) {
695: $lonid=$cookies{$secure};
696: } elsif (exists($cookies{$name})) {
697: $lonid=$cookies{$name};
698: } elsif ((exists($cookies{$linkname})) && ($ENV{'SERVER_PORT'} != 443)) {
699: $lonid=$cookies{$linkname};
700: } elsif (exists($cookies{$pubname})) {
701: $lonid=$cookies{$pubname};
702: }
703: } else {
704: $lonid=$cookies{$name};
705: }
706: return undef if (!$lonid);
707:
708: my $handle=&LONCAPA::clean_handle($lonid->value);
709: if (-l "$lonidsdir/$handle.id") {
710: my $link = readlink("$lonidsdir/$handle.id");
711: if ((-e $link) && ($link =~ m{^\Q$lonidsdir\E/(.+)\.id$})) {
712: $handle = $1;
713: }
714: }
715: if (!-e "$lonidsdir/$handle.id") {
716: if ((ref($domref)) && ($name eq 'lonID') &&
717: ($handle =~ /^($match_username)\_\d+\_($match_domain)\_(.+)$/)) {
718: my ($possuname,$possudom,$possuhome) = ($1,$2,$3);
719: if ((&domain($possudom) ne '') && (&homeserver($possuname,$possudom) eq $possuhome)) {
720: $$domref = $possudom;
721: }
722: }
723: return undef;
724: }
725:
726: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
727: return undef if (!$opened);
728:
729: flock($idf,LOCK_SH);
730: my %disk_env;
731: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
732: &GDBM_READER(),0640)) {
733: return undef;
734: }
735:
736: if (!defined($disk_env{'user.name'})
737: || !defined($disk_env{'user.domain'})) {
738: untie(%disk_env);
739: return undef;
740: }
741:
742: if (ref($userhashref) eq 'HASH') {
743: $userhashref->{'name'} = $disk_env{'user.name'};
744: $userhashref->{'domain'} = $disk_env{'user.domain'};
745: if ($disk_env{'request.role'}) {
746: $userhashref->{'role'} = $disk_env{'request.role'};
747: }
748: $userhashref->{'lti'} = $disk_env{'request.lti.login'};
749: if ($userhashref->{'lti'}) {
750: $userhashref->{'ltitarget'} = $disk_env{'request.lti.target'};
751: $userhashref->{'ltiuri'} = $disk_env{'request.lti.uri'};
752: }
753: }
754: untie(%disk_env);
755:
756: return $handle;
757: }
758:
759: sub timed_flock {
760: my ($file,$lock_type) = @_;
761: my $failed=0;
762: eval {
763: local $SIG{__DIE__}='DEFAULT';
764: local $SIG{ALRM}=sub {
765: $failed=1;
766: die("failed lock");
767: };
768: alarm(13);
769: flock($file,$lock_type);
770: alarm(0);
771: };
772: if ($failed) {
773: return undef;
774: } else {
775: return 1;
776: }
777: }
778:
779: sub get_sessionfile_vars {
780: my ($handle,$lonidsdir,$storearr) = @_;
781: my %returnhash;
782: unless (ref($storearr) eq 'ARRAY') {
783: return %returnhash;
784: }
785: if (-l "$lonidsdir/$handle.id") {
786: my $link = readlink("$lonidsdir/$handle.id");
787: if ((-e $link) && ($link =~ m{^\Q$lonidsdir\E/(.+)\.id$})) {
788: $handle = $1;
789: }
790: }
791: if ((-e "$lonidsdir/$handle.id") &&
792: ($handle =~ /^($match_username)\_\d+\_($match_domain)\_(.+)$/)) {
793: my ($possuname,$possudom,$possuhome) = ($1,$2,$3);
794: if ((&domain($possudom) ne '') && (&homeserver($possuname,$possudom) eq $possuhome)) {
795: if (open(my $idf,'+<',"$lonidsdir/$handle.id")) {
796: flock($idf,LOCK_SH);
797: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
798: &GDBM_READER(),0640)) {
799: foreach my $item (@{$storearr}) {
800: $returnhash{$item} = $disk_env{$item};
801: }
802: untie(%disk_env);
803: }
804: }
805: }
806: }
807: return %returnhash;
808: }
809:
810: # ---------------------------------------------------------- Append Environment
811:
812: sub appenv {
813: my ($newenv,$roles) = @_;
814: if (ref($newenv) eq 'HASH') {
815: foreach my $key (keys(%{$newenv})) {
816: my $refused = 0;
817: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
818: $refused = 1;
819: if (ref($roles) eq 'ARRAY') {
820: my ($type,$role) = ($key =~ m{^user\.(role|priv)\.(.+?)\./});
821: if (grep(/^\Q$role\E$/,@{$roles})) {
822: $refused = 0;
823: }
824: }
825: }
826: if ($refused) {
827: &logthis("<font color=\"blue\">WARNING: ".
828: "Attempt to modify environment ".$key." to ".$newenv->{$key}
829: .'</font>');
830: delete($newenv->{$key});
831: } else {
832: $env{$key}=$newenv->{$key};
833: }
834: }
835: my $lonids = $perlvar{'lonIDsDir'};
836: if ($env{'user.environment'} =~ m{^\Q$lonids/\E$match_username\_\d+\_$match_domain\_[\w\-.]+\.id$}) {
837: my $opened = open(my $env_file,'+<',$env{'user.environment'});
838: if ($opened
839: && &timed_flock($env_file,LOCK_EX)
840: &&
841: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
842: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
843: while (my ($key,$value) = each(%{$newenv})) {
844: $disk_env{$key} = $value;
845: }
846: untie(%disk_env);
847: }
848: }
849: }
850: return 'ok';
851: }
852: # ----------------------------------------------------- Delete from Environment
853:
854: sub delenv {
855: my ($delthis,$regexp,$roles) = @_;
856: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
857: my $refused = 1;
858: if (ref($roles) eq 'ARRAY') {
859: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
860: if (grep(/^\Q$role\E$/,@{$roles})) {
861: $refused = 0;
862: }
863: }
864: if ($refused) {
865: &logthis("<font color=\"blue\">WARNING: ".
866: "Attempt to delete from environment ".$delthis);
867: return 'error';
868: }
869: }
870: my $opened = open(my $env_file,'+<',$env{'user.environment'});
871: if ($opened
872: && &timed_flock($env_file,LOCK_EX)
873: &&
874: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
875: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
876: foreach my $key (keys(%disk_env)) {
877: if ($regexp) {
878: if ($key=~/^$delthis/) {
879: delete($env{$key});
880: delete($disk_env{$key});
881: }
882: } else {
883: if ($key=~/^\Q$delthis\E/) {
884: delete($env{$key});
885: delete($disk_env{$key});
886: }
887: }
888: }
889: untie(%disk_env);
890: }
891: return 'ok';
892: }
893:
894: sub get_env_multiple {
895: my ($name) = @_;
896: my @values;
897: if (defined($env{$name})) {
898: # exists is it an array
899: if (ref($env{$name})) {
900: @values=@{ $env{$name} };
901: } else {
902: $values[0]=$env{$name};
903: }
904: }
905: return(@values);
906: }
907:
908: # ------------------------------------------------------------------- Locking
909:
910: sub set_lock {
911: my ($text)=@_;
912: $locknum++;
913: my $id=$$.'-'.$locknum;
914: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
915: 'session.lock.'.$id => $text});
916: return $id;
917: }
918:
919: sub get_locks {
920: my $num=0;
921: my %texts=();
922: foreach my $lock (split(/\,/,$env{'session.locks'})) {
923: if ($lock=~/\w/) {
924: $num++;
925: $texts{$lock}=$env{'session.lock.'.$lock};
926: }
927: }
928: return ($num,%texts);
929: }
930:
931: sub remove_lock {
932: my ($id)=@_;
933: my $newlocks='';
934: foreach my $lock (split(/\,/,$env{'session.locks'})) {
935: if (($lock=~/\w/) && ($lock ne $id)) {
936: $newlocks.=','.$lock;
937: }
938: }
939: &appenv({'session.locks' => $newlocks});
940: &delenv('session.lock.'.$id);
941: }
942:
943: sub remove_all_locks {
944: my $activelocks=$env{'session.locks'};
945: foreach my $lock (split(/\,/,$env{'session.locks'})) {
946: if ($lock=~/\w/) {
947: &remove_lock($lock);
948: }
949: }
950: }
951:
952:
953: # ------------------------------------------ Find out current server userload
954: sub userload {
955: my $numusers=0;
956: {
957: opendir(LONIDS,$perlvar{'lonIDsDir'});
958: my $filename;
959: my $curtime=time;
960: while ($filename=readdir(LONIDS)) {
961: next if ($filename eq '.' || $filename eq '..');
962: next if ($filename =~ /publicuser_\d+\.id/);
963: next if ($filename =~ /^[a-f0-9]+_linked\.id$/);
964: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
965: if ($curtime-$mtime < 1800) { $numusers++; }
966: }
967: closedir(LONIDS);
968: }
969: my $userloadpercent=0;
970: my $maxuserload=$perlvar{'lonUserLoadLim'};
971: if ($maxuserload) {
972: $userloadpercent=100*$numusers/$maxuserload;
973: }
974: $userloadpercent=sprintf("%.2f",$userloadpercent);
975: return $userloadpercent;
976: }
977:
978: # ------------------------------ Find server with least workload from spare.tab
979:
980: sub spareserver {
981: my ($r,$loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
982: my $spare_server;
983: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
984: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
985: : $userloadpercent;
986: my ($uint_dom,$remotesessions);
987: if (($udom ne '') && (&domain($udom) ne '')) {
988: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
989: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
990: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
991: $remotesessions = $udomdefaults{'remotesessions'};
992: }
993: my $spareshash = &this_host_spares($udom);
994: if (ref($spareshash) eq 'HASH') {
995: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
996: foreach my $try_server (@{ $spareshash->{'primary'} }) {
997: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
998: $try_server));
999: ($spare_server, $lowest_load) =
1000: &compare_server_load($try_server, $spare_server, $lowest_load);
1001: }
1002: }
1003:
1004: my $found_server = ($spare_server ne '' && $lowest_load < 100);
1005:
1006: if (!$found_server) {
1007: if (ref($spareshash->{'default'}) eq 'ARRAY') {
1008: foreach my $try_server (@{ $spareshash->{'default'} }) {
1009: next unless (&spare_can_host($udom,$uint_dom,
1010: $remotesessions,$try_server));
1011: ($spare_server, $lowest_load) =
1012: &compare_server_load($try_server, $spare_server, $lowest_load);
1013: }
1014: }
1015: }
1016: }
1017:
1018: if (!$want_server_name) {
1019: if (defined($spare_server)) {
1020: my $hostname = &hostname($spare_server);
1021: if (defined($hostname)) {
1022: my $protocol = 'http';
1023: if ($protocol{$spare_server} eq 'https') {
1024: $protocol = $protocol{$spare_server};
1025: }
1026: my $alias = &Apache::lonnet::use_proxy_alias($r,$spare_server);
1027: $hostname = $alias if ($alias ne '');
1028: $spare_server = $protocol.'://'.$hostname;
1029: }
1030: }
1031: }
1032: return $spare_server;
1033: }
1034:
1035: sub compare_server_load {
1036: my ($try_server, $spare_server, $lowest_load, $required) = @_;
1037:
1038: if ($required) {
1039: my ($reqdmajor,$reqdminor) = ($required =~ /^(\d+)\.(\d+)$/);
1040: my $remoterev = &get_server_loncaparev(undef,$try_server);
1041: my ($major,$minor) = ($remoterev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
1042: if (($major eq '' && $minor eq '') ||
1043: (($reqdmajor > $major) || (($reqdmajor == $major) && ($reqdminor > $minor)))) {
1044: return ($spare_server,$lowest_load);
1045: }
1046: }
1047:
1048: my $loadans = &reply('load', $try_server);
1049: my $userloadans = &reply('userload',$try_server);
1050:
1051: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
1052: return ($spare_server, $lowest_load); #didn't get a number from the server
1053: }
1054:
1055: my $load;
1056: if ($loadans =~ /\d/) {
1057: if ($userloadans =~ /\d/) {
1058: #both are numbers, pick the bigger one
1059: $load = ($loadans > $userloadans) ? $loadans
1060: : $userloadans;
1061: } else {
1062: $load = $loadans;
1063: }
1064: } else {
1065: $load = $userloadans;
1066: }
1067:
1068: if (($load =~ /\d/) && ($load < $lowest_load)) {
1069: $spare_server = $try_server;
1070: $lowest_load = $load;
1071: }
1072: return ($spare_server,$lowest_load);
1073: }
1074:
1075: # --------------------------- ask offload servers if user already has a session
1076: sub find_existing_session {
1077: my ($udom,$uname) = @_;
1078: my $spareshash = &this_host_spares($udom);
1079: if (ref($spareshash) eq 'HASH') {
1080: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
1081: foreach my $try_server (@{ $spareshash->{'primary'} }) {
1082: return $try_server if (&has_user_session($try_server, $udom, $uname));
1083: }
1084: }
1085: if (ref($spareshash->{'default'}) eq 'ARRAY') {
1086: foreach my $try_server (@{ $spareshash->{'default'} }) {
1087: return $try_server if (&has_user_session($try_server, $udom, $uname));
1088: }
1089: }
1090: }
1091: return;
1092: }
1093:
1094: sub delusersession {
1095: my ($lonid,$udom,$uname) = @_;
1096: my $uprimary_id = &domain($udom,'primary');
1097: my $uintdom = &internet_dom($uprimary_id);
1098: my $intdom = &internet_dom($lonid);
1099: my $serverhomedom = &host_domain($lonid);
1100: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1101: return &reply(join(':','delusersession',
1102: map {&escape($_)} ($udom,$uname)),$lonid);
1103: }
1104: return;
1105: }
1106:
1107: # check if user's browser sent load balancer cookie and server still has session
1108: # and is not overloaded.
1109: sub check_for_balancer_cookie {
1110: my ($r,$update_mtime) = @_;
1111: my ($otherserver,$cookie);
1112: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
1113: if (exists($cookies{'balanceID'})) {
1114: my $balid = $cookies{'balanceID'};
1115: $cookie=&LONCAPA::clean_handle($balid->value);
1116: my $balancedir=$r->dir_config('lonBalanceDir');
1117: if ((-d $balancedir) && (-e "$balancedir/$cookie.id")) {
1118: if ($cookie =~ /^($match_domain)_($match_username)_[a-f0-9]+$/) {
1119: my ($possudom,$possuname) = ($1,$2);
1120: my $has_session = 0;
1121: if ((&domain($possudom) ne '') &&
1122: (&homeserver($possuname,$possudom) ne 'no_host')) {
1123: my $try_server;
1124: my $opened = open(my $idf,'+<',"$balancedir/$cookie.id");
1125: if ($opened) {
1126: flock($idf,LOCK_SH);
1127: while (my $line = <$idf>) {
1128: chomp($line);
1129: if (&hostname($line) ne '') {
1130: $try_server = $line;
1131: last;
1132: }
1133: }
1134: close($idf);
1135: if (($try_server) &&
1136: (&has_user_session($try_server,$possudom,$possuname))) {
1137: my $lowest_load = 30000;
1138: ($otherserver,$lowest_load) =
1139: &compare_server_load($try_server,undef,$lowest_load);
1140: if ($otherserver ne '' && $lowest_load < 100) {
1141: $has_session = 1;
1142: } else {
1143: undef($otherserver);
1144: }
1145: }
1146: }
1147: }
1148: if ($has_session) {
1149: if ($update_mtime) {
1150: my $atime = my $mtime = time;
1151: utime($atime,$mtime,"$balancedir/$cookie.id");
1152: }
1153: } else {
1154: unlink("$balancedir/$cookie.id");
1155: }
1156: }
1157: }
1158: }
1159: return ($otherserver,$cookie);
1160: }
1161:
1162: sub updatebalcookie {
1163: my ($cookie,$balancer,$lastentry)=@_;
1164: if ($cookie =~ /^($match_domain)\_($match_username)\_[a-f0-9]{32}$/) {
1165: my ($udom,$uname) = ($1,$2);
1166: my $uprimary_id = &domain($udom,'primary');
1167: my $uintdom = &internet_dom($uprimary_id);
1168: my $intdom = &internet_dom($balancer);
1169: my $serverhomedom = &host_domain($balancer);
1170: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1171: return &reply('updatebalcookie:'.&escape($cookie).':'.&escape($lastentry),$balancer);
1172: }
1173: }
1174: return;
1175: }
1176:
1177: sub delbalcookie {
1178: my ($cookie,$balancer) =@_;
1179: if ($cookie =~ /^($match_domain)\_($match_username)\_[a-f0-9]{32}$/) {
1180: my ($udom,$uname) = ($1,$2);
1181: my $uprimary_id = &domain($udom,'primary');
1182: my $uintdom = &internet_dom($uprimary_id);
1183: my $intdom = &internet_dom($balancer);
1184: my $serverhomedom = &host_domain($balancer);
1185: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1186: return &reply('delbalcookie:'.&escape($cookie),$balancer);
1187: }
1188: }
1189: }
1190:
1191: # -------------------------------- ask if server already has a session for user
1192: sub has_user_session {
1193: my ($lonid,$udom,$uname) = @_;
1194: my $result = &reply(join(':','userhassession',
1195: map {&escape($_)} ($udom,$uname)),$lonid);
1196: return 1 if ($result eq 'ok');
1197:
1198: return 0;
1199: }
1200:
1201: # --------- determine least loaded server in a user's domain which allows login
1202:
1203: sub choose_server {
1204: my ($udom,$checkloginvia,$required,$skiploadbal) = @_;
1205: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
1206: my %servers = &get_servers($udom);
1207: my $lowest_load = 30000;
1208: my ($login_host,$hostname,$portal_path,$isredirect,$balancers);
1209: if ($skiploadbal) {
1210: ($balancers,my $cached)=&is_cached_new('loadbalancing',$udom);
1211: unless (defined($cached)) {
1212: my $cachetime = 60*60*24;
1213: my %domconfig =
1214: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1215: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1216: $balancers = &do_cache_new('loadbalancing',$udom,$domconfig{'loadbalancing'},
1217: $cachetime);
1218: }
1219: }
1220: }
1221: foreach my $lonhost (keys(%servers)) {
1222: if ($skiploadbal) {
1223: if (ref($balancers) eq 'HASH') {
1224: next if (exists($balancers->{$lonhost}));
1225: }
1226: }
1227: my $loginvia;
1228: if ($checkloginvia) {
1229: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
1230: if ($loginvia) {
1231: my ($server,$path) = split(/:/,$loginvia);
1232: ($login_host, $lowest_load) =
1233: &compare_server_load($server, $login_host, $lowest_load, $required);
1234: if ($login_host eq $server) {
1235: $portal_path = $path;
1236: $isredirect = 1;
1237: }
1238: } else {
1239: ($login_host, $lowest_load) =
1240: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1241: if ($login_host eq $lonhost) {
1242: $portal_path = '';
1243: $isredirect = '';
1244: }
1245: }
1246: } else {
1247: ($login_host, $lowest_load) =
1248: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1249: }
1250: }
1251: if ($login_host ne '') {
1252: $hostname = &hostname($login_host);
1253: }
1254: return ($login_host,$hostname,$portal_path,$isredirect,$lowest_load);
1255: }
1256:
1257: sub get_course_sessions {
1258: my ($cnum,$cdom,$lastactivity) = @_;
1259: my %servers = &internet_dom_servers($cdom);
1260: my %returnhash;
1261: foreach my $server (sort(keys(%servers))) {
1262: my $rep = &reply("coursesessions:$cdom:$cnum:$lastactivity",$server);
1263: my @pairs=split(/\&/,$rep);
1264: unless (($rep eq 'unknown_cmd') || ($rep =~ /^error/)) {
1265: foreach my $item (@pairs) {
1266: my ($key,$value)=split(/=/,$item,2);
1267: $key = &unescape($key);
1268: next if ($key =~ /^error: 2 /);
1269: if (exists($returnhash{$key})) {
1270: next if ($value < $returnhash{$key});
1271: }
1272: $returnhash{$key}=$value;
1273: }
1274: }
1275: }
1276: return %returnhash;
1277: }
1278:
1279: # --------------------------------------------- Try to change a user's password
1280:
1281: sub changepass {
1282: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
1283: $currentpass = &escape($currentpass);
1284: $newpass = &escape($newpass);
1285: my $lonhost = $perlvar{'lonHostID'};
1286: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
1287: $server);
1288: if (! $answer) {
1289: &logthis("No reply on password change request to $server ".
1290: "by $uname in domain $udom.");
1291: } elsif ($answer =~ "^ok") {
1292: &logthis("$uname in $udom successfully changed their password ".
1293: "on $server.");
1294: } elsif ($answer =~ "^pwchange_failure") {
1295: &logthis("$uname in $udom was unable to change their password ".
1296: "on $server. The action was blocked by either lcpasswd ".
1297: "or pwchange");
1298: } elsif ($answer =~ "^non_authorized") {
1299: &logthis("$uname in $udom did not get their password correct when ".
1300: "attempting to change it on $server.");
1301: } elsif ($answer =~ "^auth_mode_error") {
1302: &logthis("$uname in $udom attempted to change their password despite ".
1303: "not being locally or internally authenticated on $server.");
1304: } elsif ($answer =~ "^unknown_user") {
1305: &logthis("$uname in $udom attempted to change their password ".
1306: "on $server but were unable to because $server is not ".
1307: "their home server.");
1308: } elsif ($answer =~ "^refused") {
1309: &logthis("$server refused to change $uname in $udom password because ".
1310: "it was sent an unencrypted request to change the password.");
1311: } elsif ($answer =~ "invalid_client") {
1312: &logthis("$server refused to change $uname in $udom password because ".
1313: "it was a reset by e-mail originating from an invalid server.");
1314: } elsif ($answer =~ "^prioruse") {
1315: &logthis("$server refused to change $uname in $udom password because ".
1316: "the password had been used before");
1317: }
1318: return $answer;
1319: }
1320:
1321: # ----------------------- Try to determine user's current authentication scheme
1322:
1323: sub queryauthenticate {
1324: my ($uname,$udom)=@_;
1325: my $uhome=&homeserver($uname,$udom);
1326: if (!$uhome) {
1327: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1328: return 'no_host';
1329: }
1330: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1331: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1332: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1333: }
1334: return $answer;
1335: }
1336:
1337: # --------- Try to authenticate user from domain's lib servers (first this one)
1338:
1339: sub authenticate {
1340: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1341: $upass=&escape($upass);
1342: $uname= &LONCAPA::clean_username($uname);
1343: my $uhome=&homeserver($uname,$udom,1);
1344: my $newhome;
1345: if ((!$uhome) || ($uhome eq 'no_host')) {
1346: # Maybe the machine was offline and only re-appeared again recently?
1347: &reconlonc();
1348: # One more
1349: $uhome=&homeserver($uname,$udom,1);
1350: if (($uhome eq 'no_host') && $checkdefauth) {
1351: if (defined(&domain($udom,'primary'))) {
1352: $newhome=&domain($udom,'primary');
1353: }
1354: if ($newhome ne '') {
1355: $uhome = $newhome;
1356: }
1357: }
1358: if ((!$uhome) || ($uhome eq 'no_host')) {
1359: &logthis("User $uname at $udom is unknown in authenticate");
1360: return 'no_host';
1361: }
1362: }
1363: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1364: if ($answer eq 'authorized') {
1365: if ($newhome) {
1366: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1367: return 'no_account_on_host';
1368: } else {
1369: &logthis("User $uname at $udom authorized by $uhome");
1370: return $uhome;
1371: }
1372: }
1373: if ($answer eq 'non_authorized') {
1374: &logthis("User $uname at $udom rejected by $uhome");
1375: return 'no_host';
1376: }
1377: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1378: return 'no_host';
1379: }
1380:
1381: sub can_host_session {
1382: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1383: my $canhost = 1;
1384: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1385: if (ref($remotesessions) eq 'HASH') {
1386: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1387: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1388: $canhost = 0;
1389: } else {
1390: $canhost = 1;
1391: }
1392: }
1393: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1394: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1395: $canhost = 1;
1396: } else {
1397: $canhost = 0;
1398: }
1399: }
1400: if ($canhost) {
1401: if ($remotesessions->{'version'} ne '') {
1402: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1403: if ($reqmajor ne '' && $reqminor ne '') {
1404: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1405: my $major = $1;
1406: my $minor = $2;
1407: if (($major < $reqmajor ) ||
1408: (($major == $reqmajor) && ($minor < $reqminor))) {
1409: $canhost = 0;
1410: }
1411: } else {
1412: $canhost = 0;
1413: }
1414: }
1415: }
1416: }
1417: }
1418: if ($canhost) {
1419: if (ref($hostedsessions) eq 'HASH') {
1420: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1421: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1422: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1423: if (($uint_dom ne '') &&
1424: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1425: $canhost = 0;
1426: } else {
1427: $canhost = 1;
1428: }
1429: }
1430: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1431: if (($uint_dom ne '') &&
1432: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1433: $canhost = 1;
1434: } else {
1435: $canhost = 0;
1436: }
1437: }
1438: }
1439: }
1440: return $canhost;
1441: }
1442:
1443: sub spare_can_host {
1444: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1445: my $canhost=1;
1446: my $try_server_hostname = &hostname($try_server);
1447: my $serverhomeID = &get_server_homeID($try_server_hostname);
1448: my $serverhomedom = &host_domain($serverhomeID);
1449: my %defdomdefaults = &get_domain_defaults($serverhomedom);
1450: if (ref($defdomdefaults{'offloadnow'}) eq 'HASH') {
1451: if ($defdomdefaults{'offloadnow'}{$try_server}) {
1452: $canhost = 0;
1453: }
1454: }
1455: if ($canhost) {
1456: if (ref($defdomdefaults{'offloadoth'}) eq 'HASH') {
1457: if ($defdomdefaults{'offloadoth'}{$try_server}) {
1458: unless (&shared_institution($udom,$try_server)) {
1459: $canhost = 0;
1460: }
1461: }
1462: }
1463: }
1464: if (($canhost) && ($uint_dom)) {
1465: my @intdoms;
1466: my $internet_names = &get_internet_names($try_server);
1467: if (ref($internet_names) eq 'ARRAY') {
1468: @intdoms = @{$internet_names};
1469: }
1470: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1471: my $remoterev = &get_server_loncaparev(undef,$try_server);
1472: $canhost = &can_host_session($udom,$try_server,$remoterev,
1473: $remotesessions,
1474: $defdomdefaults{'hostedsessions'});
1475: }
1476: }
1477: return $canhost;
1478: }
1479:
1480: sub this_host_spares {
1481: my ($dom) = @_;
1482: my ($dom_in_use,$lonhost_in_use,$result);
1483: my @hosts = ¤t_machine_ids();
1484: foreach my $lonhost (@hosts) {
1485: if (&host_domain($lonhost) eq $dom) {
1486: $dom_in_use = $dom;
1487: $lonhost_in_use = $lonhost;
1488: last;
1489: }
1490: }
1491: if ($dom_in_use ne '') {
1492: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1493: }
1494: if (ref($result) ne 'HASH') {
1495: $lonhost_in_use = $perlvar{'lonHostID'};
1496: $dom_in_use = &host_domain($lonhost_in_use);
1497: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1498: if (ref($result) ne 'HASH') {
1499: $result = \%spareid;
1500: }
1501: }
1502: return $result;
1503: }
1504:
1505: sub spares_for_offload {
1506: my ($dom_in_use,$lonhost_in_use) = @_;
1507: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1508: if (defined($cached)) {
1509: return $result;
1510: } else {
1511: my $cachetime = 60*60*24;
1512: my %domconfig =
1513: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1514: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1515: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1516: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1517: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1518: }
1519: }
1520: }
1521: }
1522: return;
1523: }
1524:
1525: sub get_lonbalancer_config {
1526: my ($servers) = @_;
1527: my ($currbalancer,$currtargets);
1528: if (ref($servers) eq 'HASH') {
1529: foreach my $server (keys(%{$servers})) {
1530: my %what = (
1531: spareid => 1,
1532: perlvar => 1,
1533: );
1534: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1535: if ($result eq 'ok') {
1536: if (ref($returnhash) eq 'HASH') {
1537: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1538: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1539: $currbalancer = $server;
1540: $currtargets = {};
1541: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1542: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1543: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1544: }
1545: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1546: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1547: }
1548: }
1549: last;
1550: }
1551: }
1552: }
1553: }
1554: }
1555: }
1556: return ($currbalancer,$currtargets);
1557: }
1558:
1559: sub check_loadbalancing {
1560: my ($uname,$udom,$caller) = @_;
1561: my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
1562: $rule_in_effect,$offloadto,$otherserver,$setcookie,$dom_balancers);
1563: my $lonhost = $perlvar{'lonHostID'};
1564: my @hosts = ¤t_machine_ids();
1565: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1566: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1567: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1568: my $serverhomedom = &host_domain($lonhost);
1569: my $domneedscache;
1570: my $cachetime = 60*60*24;
1571:
1572: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1573: $dom_in_use = $udom;
1574: $homeintdom = 1;
1575: } else {
1576: $dom_in_use = $serverhomedom;
1577: }
1578: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1579: unless (defined($cached)) {
1580: my %domconfig =
1581: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1582: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1583: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1584: } else {
1585: $domneedscache = $dom_in_use;
1586: }
1587: }
1588: if (ref($result) eq 'HASH') {
1589: ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers) =
1590: &check_balancer_result($result,@hosts);
1591: if ($is_balancer) {
1592: if (ref($currrules) eq 'HASH') {
1593: if ($homeintdom) {
1594: if ($uname ne '') {
1595: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1596: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1597: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1598: $rule_in_effect = $currrules->{'_LC_author'};
1599: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1600: $rule_in_effect = $currrules->{'_LC_adv'}
1601: }
1602: }
1603: if ($rule_in_effect eq '') {
1604: my %userenv = &userenvironment($udom,$uname,'inststatus');
1605: if ($userenv{'inststatus'} ne '') {
1606: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1607: my ($othertitle,$usertypes,$types) =
1608: &Apache::loncommon::sorted_inst_types($udom);
1609: if (ref($types) eq 'ARRAY') {
1610: foreach my $type (@{$types}) {
1611: if (grep(/^\Q$type\E$/,@statuses)) {
1612: if (exists($currrules->{$type})) {
1613: $rule_in_effect = $currrules->{$type};
1614: }
1615: }
1616: }
1617: }
1618: } else {
1619: if (exists($currrules->{'default'})) {
1620: $rule_in_effect = $currrules->{'default'};
1621: }
1622: }
1623: }
1624: } else {
1625: if (exists($currrules->{'default'})) {
1626: $rule_in_effect = $currrules->{'default'};
1627: }
1628: }
1629: } else {
1630: if ($currrules->{'_LC_external'} ne '') {
1631: $rule_in_effect = $currrules->{'_LC_external'};
1632: }
1633: }
1634: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1635: $uname,$udom);
1636: }
1637: }
1638: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1639: ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1640: unless (defined($cached)) {
1641: my %domconfig =
1642: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1643: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1644: $result = &do_cache_new('loadbalancing',$serverhomedom,$domconfig{'loadbalancing'},$cachetime);
1645: } else {
1646: $domneedscache = $serverhomedom;
1647: }
1648: }
1649: if (ref($result) eq 'HASH') {
1650: ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers) =
1651: &check_balancer_result($result,@hosts);
1652: if ($is_balancer) {
1653: if (ref($currrules) eq 'HASH') {
1654: if ($currrules->{'_LC_internetdom'} ne '') {
1655: $rule_in_effect = $currrules->{'_LC_internetdom'};
1656: }
1657: }
1658: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1659: $uname,$udom);
1660: }
1661: } else {
1662: if ($perlvar{'lonBalancer'} eq 'yes') {
1663: $is_balancer = 1;
1664: $offloadto = &this_host_spares($dom_in_use);
1665: }
1666: unless (defined($cached)) {
1667: $domneedscache = $serverhomedom;
1668: }
1669: }
1670: } else {
1671: if ($perlvar{'lonBalancer'} eq 'yes') {
1672: $is_balancer = 1;
1673: $offloadto = &this_host_spares($dom_in_use);
1674: }
1675: unless (defined($cached)) {
1676: $domneedscache = $serverhomedom;
1677: }
1678: }
1679: if ($domneedscache) {
1680: &do_cache_new('loadbalancing',$domneedscache,$is_balancer,$cachetime);
1681: }
1682: if (($is_balancer) && ($caller ne 'switchserver')) {
1683: my $lowest_load = 30000;
1684: if (ref($offloadto) eq 'HASH') {
1685: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1686: foreach my $try_server (@{$offloadto->{'primary'}}) {
1687: ($otherserver,$lowest_load) =
1688: &compare_server_load($try_server,$otherserver,$lowest_load);
1689: }
1690: }
1691: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1692:
1693: if (!$found_server) {
1694: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1695: foreach my $try_server (@{$offloadto->{'default'}}) {
1696: ($otherserver,$lowest_load) =
1697: &compare_server_load($try_server,$otherserver,$lowest_load);
1698: }
1699: }
1700: }
1701: } elsif (ref($offloadto) eq 'ARRAY') {
1702: if (@{$offloadto} == 1) {
1703: $otherserver = $offloadto->[0];
1704: } elsif (@{$offloadto} > 1) {
1705: foreach my $try_server (@{$offloadto}) {
1706: ($otherserver,$lowest_load) =
1707: &compare_server_load($try_server,$otherserver,$lowest_load);
1708: }
1709: }
1710: }
1711: unless ($caller eq 'login') {
1712: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1713: $is_balancer = 0;
1714: if ($uname ne '' && $udom ne '') {
1715: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1716: &appenv({'user.loadbalexempt' => $lonhost,
1717: 'user.loadbalcheck.time' => time});
1718: }
1719: }
1720: }
1721: }
1722: }
1723: if (($is_balancer) && (!$homeintdom)) {
1724: undef($setcookie);
1725: }
1726: return ($is_balancer,$otherserver,$setcookie,$offloadto,$dom_balancers);
1727: }
1728:
1729: sub check_balancer_result {
1730: my ($result,@hosts) = @_;
1731: my ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers);
1732: if (ref($result) eq 'HASH') {
1733: if ($result->{'lonhost'} ne '') {
1734: my $currbalancer = $result->{'lonhost'};
1735: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1736: $is_balancer = 1;
1737: $currtargets = $result->{'targets'};
1738: $currrules = $result->{'rules'};
1739: }
1740: $dom_balancers = $currbalancer;
1741: } else {
1742: if (keys(%{$result})) {
1743: foreach my $key (keys(%{$result})) {
1744: if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&
1745: (ref($result->{$key}) eq 'HASH')) {
1746: $is_balancer = 1;
1747: $currrules = $result->{$key}{'rules'};
1748: $currtargets = $result->{$key}{'targets'};
1749: $setcookie = $result->{$key}{'cookie'};
1750: last;
1751: }
1752: }
1753: $dom_balancers = join(',',sort(keys(%{$result})));
1754: }
1755: }
1756: }
1757: return ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers);
1758: }
1759:
1760: sub get_loadbalancer_targets {
1761: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1762: my $offloadto;
1763: if ($rule_in_effect eq 'none') {
1764: return [$perlvar{'lonHostID'}];
1765: } elsif ($rule_in_effect eq '') {
1766: $offloadto = $currtargets;
1767: } else {
1768: if ($rule_in_effect eq 'homeserver') {
1769: my $homeserver = &homeserver($uname,$udom);
1770: if ($homeserver ne 'no_host') {
1771: $offloadto = [$homeserver];
1772: }
1773: } elsif ($rule_in_effect eq 'externalbalancer') {
1774: my %domconfig =
1775: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1776: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1777: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1778: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1779: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1780: }
1781: }
1782: } else {
1783: my %servers = &internet_dom_servers($udom);
1784: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1785: if (&hostname($remotebalancer) ne '') {
1786: $offloadto = [$remotebalancer];
1787: }
1788: }
1789: } elsif (&hostname($rule_in_effect) ne '') {
1790: $offloadto = [$rule_in_effect];
1791: }
1792: }
1793: return $offloadto;
1794: }
1795:
1796: sub internet_dom_servers {
1797: my ($dom) = @_;
1798: my (%uniqservers,%servers);
1799: my $primaryserver = &hostname(&domain($dom,'primary'));
1800: my @machinedoms = &machine_domains($primaryserver);
1801: foreach my $mdom (@machinedoms) {
1802: my %currservers = %servers;
1803: my %server = &get_servers($mdom);
1804: %servers = (%currservers,%server);
1805: }
1806: my %by_hostname;
1807: foreach my $id (keys(%servers)) {
1808: push(@{$by_hostname{$servers{$id}}},$id);
1809: }
1810: foreach my $hostname (sort(keys(%by_hostname))) {
1811: if (@{$by_hostname{$hostname}} > 1) {
1812: my $match = 0;
1813: foreach my $id (@{$by_hostname{$hostname}}) {
1814: if (&host_domain($id) eq $dom) {
1815: $uniqservers{$id} = $hostname;
1816: $match = 1;
1817: }
1818: }
1819: unless ($match) {
1820: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1821: }
1822: } else {
1823: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1824: }
1825: }
1826: return %uniqservers;
1827: }
1828:
1829: sub trusted_domains {
1830: my ($cmdtype,$calldom) = @_;
1831: my ($trusted,$untrusted);
1832: if (&domain($calldom) eq '') {
1833: return ($trusted,$untrusted);
1834: }
1835: unless ($cmdtype =~ /^(content|shared|enroll|coaurem|othcoau|domroles|catalog|reqcrs|msg)$/) {
1836: return ($trusted,$untrusted);
1837: }
1838: my $callprimary = &domain($calldom,'primary');
1839: my $intcalldom = &Apache::lonnet::internet_dom($callprimary);
1840: if ($intcalldom eq '') {
1841: return ($trusted,$untrusted);
1842: }
1843:
1844: my ($trustconfig,$cached)=&Apache::lonnet::is_cached_new('trust',$calldom);
1845: unless (defined($cached)) {
1846: my %domconfig = &Apache::lonnet::get_dom('configuration',['trust'],$calldom);
1847: &Apache::lonnet::do_cache_new('trust',$calldom,$domconfig{'trust'},3600);
1848: $trustconfig = $domconfig{'trust'};
1849: }
1850: if (ref($trustconfig)) {
1851: my (%possexc,%possinc,@allexc,@allinc);
1852: if (ref($trustconfig->{$cmdtype}) eq 'HASH') {
1853: if (ref($trustconfig->{$cmdtype}->{'exc'}) eq 'ARRAY') {
1854: map { $possexc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'exc'}};
1855: }
1856: if (ref($trustconfig->{$cmdtype}->{'inc'}) eq 'ARRAY') {
1857: $possinc{$intcalldom} = 1;
1858: map { $possinc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'inc'}};
1859: }
1860: }
1861: if (keys(%possexc)) {
1862: if (keys(%possinc)) {
1863: foreach my $key (sort(keys(%possexc))) {
1864: next if ($key eq $intcalldom);
1865: unless ($possinc{$key}) {
1866: push(@allexc,$key);
1867: }
1868: }
1869: } else {
1870: @allexc = sort(keys(%possexc));
1871: }
1872: }
1873: if (keys(%possinc)) {
1874: $possinc{$intcalldom} = 1;
1875: @allinc = sort(keys(%possinc));
1876: }
1877: if ((@allexc > 0) || (@allinc > 0)) {
1878: my %doms_by_intdom;
1879: my %allintdoms = &all_host_intdom();
1880: my %alldoms = &all_host_domain();
1881: foreach my $key (%allintdoms) {
1882: if (ref($doms_by_intdom{$allintdoms{$key}}) eq 'ARRAY') {
1883: unless (grep(/^\Q$alldoms{$key}\E$/,@{$doms_by_intdom{$allintdoms{$key}}})) {
1884: push(@{$doms_by_intdom{$allintdoms{$key}}},$alldoms{$key});
1885: }
1886: } else {
1887: $doms_by_intdom{$allintdoms{$key}} = [$alldoms{$key}];
1888: }
1889: }
1890: foreach my $exc (@allexc) {
1891: if (ref($doms_by_intdom{$exc}) eq 'ARRAY') {
1892: push(@{$untrusted},@{$doms_by_intdom{$exc}});
1893: }
1894: }
1895: foreach my $inc (@allinc) {
1896: if (ref($doms_by_intdom{$inc}) eq 'ARRAY') {
1897: push(@{$trusted},@{$doms_by_intdom{$inc}});
1898: }
1899: }
1900: }
1901: }
1902: return ($trusted,$untrusted);
1903: }
1904:
1905: sub will_trust {
1906: my ($cmdtype,$domain,$possdom) = @_;
1907: return 1 if ($domain eq $possdom);
1908: my ($trustedref,$untrustedref) = &trusted_domains($cmdtype,$possdom);
1909: my $willtrust;
1910: if ((ref($trustedref) eq 'ARRAY') && (@{$trustedref} > 0)) {
1911: if (grep(/^\Q$domain\E$/,@{$trustedref})) {
1912: $willtrust = 1;
1913: }
1914: } elsif ((ref($untrustedref) eq 'ARRAY') && (@{$untrustedref} > 0)) {
1915: unless (grep(/^\Q$domain\E$/,@{$untrustedref})) {
1916: $willtrust = 1;
1917: }
1918: } else {
1919: $willtrust = 1;
1920: }
1921: return $willtrust;
1922: }
1923:
1924: # ---------------------- Find the homebase for a user from domain's lib servers
1925:
1926: my %homecache;
1927: sub homeserver {
1928: my ($uname,$udom,$ignoreBadCache)=@_;
1929: my $index="$uname:$udom";
1930:
1931: if (exists($homecache{$index})) { return $homecache{$index}; }
1932:
1933: my %servers = &get_servers($udom,'library');
1934: foreach my $tryserver (keys(%servers)) {
1935: next if ($ignoreBadCache ne 'true' &&
1936: exists($badServerCache{$tryserver}));
1937:
1938: my $answer=reply("home:$udom:$uname",$tryserver);
1939: if ($answer eq 'found') {
1940: delete($badServerCache{$tryserver});
1941: return $homecache{$index}=$tryserver;
1942: } elsif ($answer eq 'no_host') {
1943: $badServerCache{$tryserver}=1;
1944: }
1945: }
1946: return 'no_host';
1947: }
1948:
1949: # ----- Find the usernames behind a list of student/employee IDs or clicker IDs
1950:
1951: sub idget {
1952: my ($udom,$idsref,$namespace)=@_;
1953: my %returnhash=();
1954: my @ids=();
1955: if (ref($idsref) eq 'ARRAY') {
1956: @ids = @{$idsref};
1957: } else {
1958: return %returnhash;
1959: }
1960: if ($namespace eq '') {
1961: $namespace = 'ids';
1962: }
1963:
1964: my %servers = &get_servers($udom,'library');
1965: foreach my $tryserver (keys(%servers)) {
1966: my $idlist=join('&', map { &escape($_); } @ids);
1967: if ($namespace eq 'ids') {
1968: $idlist=~tr/A-Z/a-z/;
1969: }
1970: my $reply;
1971: if ($namespace eq 'ids') {
1972: $reply=&reply("idget:$udom:".$idlist,$tryserver);
1973: } else {
1974: $reply=&reply("getdom:$udom:$namespace:$idlist",$tryserver);
1975: }
1976: my @answer=();
1977: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1978: @answer=split(/\&/,$reply);
1979: } ;
1980: my $i;
1981: for ($i=0;$i<=$#ids;$i++) {
1982: if ($answer[$i]) {
1983: $returnhash{$ids[$i]}=&unescape($answer[$i]);
1984: }
1985: }
1986: }
1987: return %returnhash;
1988: }
1989:
1990: # ------------------------------------- Find the IDs behind a list of usernames
1991:
1992: sub idrget {
1993: my ($udom,@unames)=@_;
1994: my %returnhash=();
1995: foreach my $uname (@unames) {
1996: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1997: }
1998: return %returnhash;
1999: }
2000:
2001: # Store away a list of names and associated student/employee IDs or clicker IDs
2002:
2003: sub idput {
2004: my ($udom,$idsref,$uhom,$namespace)=@_;
2005: my %servers=();
2006: my %ids=();
2007: my %byid = ();
2008: if (ref($idsref) eq 'HASH') {
2009: %ids=%{$idsref};
2010: }
2011: if ($namespace eq '') {
2012: $namespace = 'ids';
2013: }
2014: foreach my $uname (keys(%ids)) {
2015: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
2016: if ($uhom eq '') {
2017: $uhom=&homeserver($uname,$udom);
2018: }
2019: if ($uhom ne 'no_host') {
2020: my $esc_unam=&escape($uname);
2021: if ($namespace eq 'ids') {
2022: my $id=&escape($ids{$uname});
2023: $id=~tr/A-Z/a-z/;
2024: my $esc_unam=&escape($uname);
2025: $servers{$uhom}.=$id.'='.$esc_unam.'&';
2026: } else {
2027: my @currids = split(/,/,$ids{$uname});
2028: foreach my $id (@currids) {
2029: $byid{$uhom}{$id} .= $uname.',';
2030: }
2031: }
2032: }
2033: }
2034: if ($namespace eq 'clickers') {
2035: foreach my $server (keys(%byid)) {
2036: if (ref($byid{$server}) eq 'HASH') {
2037: foreach my $id (keys(%{$byid{$server}})) {
2038: $byid{$server} =~ s/,$//;
2039: $servers{$uhom}.=&escape($id).'='.&escape($byid{$server}).'&';
2040: }
2041: }
2042: }
2043: }
2044: foreach my $server (keys(%servers)) {
2045: $servers{$server} =~ s/\&$//;
2046: if ($namespace eq 'ids') {
2047: &critical('idput:'.$udom.':'.$servers{$server},$server);
2048: } else {
2049: &critical('updateclickers:'.$udom.':add:'.$servers{$server},$server);
2050: }
2051: }
2052: }
2053:
2054: # ------------- Delete unwanted student/employee IDs or clicker IDs from domain
2055:
2056: sub iddel {
2057: my ($udom,$idshashref,$uhome,$namespace)=@_;
2058: my %result=();
2059: my %ids=();
2060: my %byid = ();
2061: if (ref($idshashref) eq 'HASH') {
2062: %ids=%{$idshashref};
2063: } else {
2064: return %result;
2065: }
2066: if ($namespace eq '') {
2067: $namespace = 'ids';
2068: }
2069: my %servers=();
2070: while (my ($id,$unamestr) = each(%ids)) {
2071: if ($namespace eq 'ids') {
2072: my $uhom = $uhome;
2073: if ($uhom eq '') {
2074: $uhom=&homeserver($unamestr,$udom);
2075: }
2076: if ($uhom ne 'no_host') {
2077: $servers{$uhom}.='&'.&escape($id);
2078: }
2079: } else {
2080: my @curritems = split(/,/,$ids{$id});
2081: foreach my $uname (@curritems) {
2082: my $uhom = $uhome;
2083: if ($uhom eq '') {
2084: $uhom=&homeserver($uname,$udom);
2085: }
2086: if ($uhom ne 'no_host') {
2087: $byid{$uhom}{$id} .= $uname.',';
2088: }
2089: }
2090: }
2091: }
2092: if ($namespace eq 'clickers') {
2093: foreach my $server (keys(%byid)) {
2094: if (ref($byid{$server}) eq 'HASH') {
2095: foreach my $id (keys(%{$byid{$server}})) {
2096: $byid{$server}{$id} =~ s/,$//;
2097: $servers{$server}.=&escape($id).'='.&escape($byid{$server}{$id}).'&';
2098: }
2099: }
2100: }
2101: }
2102: foreach my $server (keys(%servers)) {
2103: $servers{$server} =~ s/\&$//;
2104: if ($namespace eq 'ids') {
2105: $result{$server} = &critical('iddel:'.$udom.':'.$servers{$server},$uhome);
2106: } elsif ($namespace eq 'clickers') {
2107: $result{$server} = &critical('updateclickers:'.$udom.':del:'.$servers{$server},$server);
2108: }
2109: }
2110: return %result;
2111: }
2112:
2113: # ----- Update clicker ID-to-username look-ups in clickers.db on library server
2114:
2115: sub updateclickers {
2116: my ($udom,$action,$idshashref,$uhome,$critical) = @_;
2117: my %clickers;
2118: if (ref($idshashref) eq 'HASH') {
2119: %clickers=%{$idshashref};
2120: } else {
2121: return;
2122: }
2123: my $items='';
2124: foreach my $item (keys(%clickers)) {
2125: $items.=&escape($item).'='.&escape($clickers{$item}).'&';
2126: }
2127: $items=~s/\&$//;
2128: my $request = "updateclickers:$udom:$action:$items";
2129: if ($critical) {
2130: return &critical($request,$uhome);
2131: } else {
2132: return &reply($request,$uhome);
2133: }
2134: }
2135:
2136: # ------------------------------dump from db file owned by domainconfig user
2137: sub dump_dom {
2138: my ($namespace, $udom, $regexp) = @_;
2139:
2140: $udom ||= $env{'user.domain'};
2141:
2142: return () unless $udom;
2143:
2144: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
2145: }
2146:
2147: # ------------------------------------------ get items from domain db files
2148:
2149: sub get_dom {
2150: my ($namespace,$storearr,$udom,$uhome,$encrypt)=@_;
2151: return if ($udom eq 'public');
2152: my $items='';
2153: foreach my $item (@$storearr) {
2154: $items.=&escape($item).'&';
2155: }
2156: $items=~s/\&$//;
2157: if (!$udom) {
2158: $udom=$env{'user.domain'};
2159: return if ($udom eq 'public');
2160: if (defined(&domain($udom,'primary'))) {
2161: $uhome=&domain($udom,'primary');
2162: } else {
2163: undef($uhome);
2164: }
2165: } else {
2166: if (!$uhome) {
2167: if (defined(&domain($udom,'primary'))) {
2168: $uhome=&domain($udom,'primary');
2169: }
2170: }
2171: }
2172: if ($udom && $uhome && ($uhome ne 'no_host')) {
2173: my $rep;
2174: if (grep { $_ eq $uhome } ¤t_machine_ids()) {
2175: # domain information is hosted on this machine
2176: $rep = &LONCAPA::Lond::get_dom("getdom:$udom:$namespace:$items");
2177: } else {
2178: if ($encrypt) {
2179: $rep=&reply("encrypt:egetdom:$udom:$namespace:$items",$uhome);
2180: } else {
2181: $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
2182: }
2183: }
2184: my %returnhash;
2185: if ($rep eq '' || $rep =~ /^error: 2 /) {
2186: return %returnhash;
2187: }
2188: my @pairs=split(/\&/,$rep);
2189: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
2190: return @pairs;
2191: }
2192: my $i=0;
2193: foreach my $item (@$storearr) {
2194: $returnhash{$item}=&thaw_unescape($pairs[$i]);
2195: $i++;
2196: }
2197: return %returnhash;
2198: } else {
2199: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
2200: }
2201: }
2202:
2203: # -------------------------------------------- put items in domain db files
2204:
2205: sub put_dom {
2206: my ($namespace,$storehash,$udom,$uhome,$encrypt)=@_;
2207: if (!$udom) {
2208: $udom=$env{'user.domain'};
2209: if (defined(&domain($udom,'primary'))) {
2210: $uhome=&domain($udom,'primary');
2211: } else {
2212: undef($uhome);
2213: }
2214: } else {
2215: if (!$uhome) {
2216: if (defined(&domain($udom,'primary'))) {
2217: $uhome=&domain($udom,'primary');
2218: }
2219: }
2220: }
2221: if ($udom && $uhome && ($uhome ne 'no_host')) {
2222: my $items='';
2223: foreach my $item (keys(%$storehash)) {
2224: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
2225: }
2226: $items=~s/\&$//;
2227: if ($encrypt) {
2228: return &reply("encrypt:putdom:$udom:$namespace:$items",$uhome);
2229: } else {
2230: return &reply("putdom:$udom:$namespace:$items",$uhome);
2231: }
2232: } else {
2233: &logthis("put_dom failed - no homeserver and/or domain");
2234: }
2235: }
2236:
2237: # --------------------- newput for items in db file owned by domainconfig user
2238: sub newput_dom {
2239: my ($namespace,$storehash,$udom) = @_;
2240: my $result;
2241: if (!$udom) {
2242: $udom=$env{'user.domain'};
2243: }
2244: if ($udom) {
2245: my $uname = &get_domainconfiguser($udom);
2246: $result = &newput($namespace,$storehash,$udom,$uname);
2247: }
2248: return $result;
2249: }
2250:
2251: # --------------------- delete for items in db file owned by domainconfig user
2252: sub del_dom {
2253: my ($namespace,$storearr,$udom)=@_;
2254: if (ref($storearr) eq 'ARRAY') {
2255: if (!$udom) {
2256: $udom=$env{'user.domain'};
2257: }
2258: if ($udom) {
2259: my $uname = &get_domainconfiguser($udom);
2260: return &del($namespace,$storearr,$udom,$uname);
2261: }
2262: }
2263: }
2264:
2265: # ----------------------------------construct domainconfig user for a domain
2266: sub get_domainconfiguser {
2267: my ($udom) = @_;
2268: return $udom.'-domainconfig';
2269: }
2270:
2271: sub retrieve_inst_usertypes {
2272: my ($udom) = @_;
2273: my (%returnhash,@order);
2274: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
2275: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
2276: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
2277: return ($domdefs{'inststatustypes'},$domdefs{'inststatusorder'});
2278: } else {
2279: if (defined(&domain($udom,'primary'))) {
2280: my $uhome=&domain($udom,'primary');
2281: my $rep=&reply("inst_usertypes:$udom",$uhome);
2282: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
2283: &logthis("retrieve_inst_usertypes failed - $rep returned from $uhome in domain: $udom");
2284: return (\%returnhash,\@order);
2285: }
2286: my ($hashitems,$orderitems) = split(/:/,$rep);
2287: my @pairs=split(/\&/,$hashitems);
2288: foreach my $item (@pairs) {
2289: my ($key,$value)=split(/=/,$item,2);
2290: $key = &unescape($key);
2291: next if ($key =~ /^error: 2 /);
2292: $returnhash{$key}=&thaw_unescape($value);
2293: }
2294: my @esc_order = split(/\&/,$orderitems);
2295: foreach my $item (@esc_order) {
2296: push(@order,&unescape($item));
2297: }
2298: } else {
2299: &logthis("retrieve_inst_usertypes failed - no primary domain server for $udom");
2300: }
2301: return (\%returnhash,\@order);
2302: }
2303: }
2304:
2305: sub is_domainimage {
2306: my ($url) = @_;
2307: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+[^/]-) {
2308: if (&domain($1) ne '') {
2309: return '1';
2310: }
2311: }
2312: return;
2313: }
2314:
2315: sub inst_directory_query {
2316: my ($srch) = @_;
2317: my $udom = $srch->{'srchdomain'};
2318: my %results;
2319: my $homeserver = &domain($udom,'primary');
2320: my $outcome;
2321: if ($homeserver ne '') {
2322: unless ($homeserver eq $perlvar{'lonHostID'}) {
2323: if ($srch->{'srchby'} eq 'email') {
2324: my $lcrev = &get_server_loncaparev($udom,$homeserver);
2325: my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
2326: if (($major eq '' && $minor eq '') || ($major < 2) ||
2327: (($major == 2) && ($minor < 12))) {
2328: return;
2329: }
2330: }
2331: }
2332: my $queryid=&reply("querysend:instdirsearch:".
2333: &escape($srch->{'srchby'}).':'.
2334: &escape($srch->{'srchterm'}).':'.
2335: &escape($srch->{'srchtype'}),$homeserver);
2336: my $host=&hostname($homeserver);
2337: if ($queryid !~/^\Q$host\E\_/) {
2338: &logthis('institutional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.' in domain '.$udom);
2339: return;
2340: }
2341: my $response = &get_query_reply($queryid);
2342: my $maxtries = 5;
2343: my $tries = 1;
2344: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2345: $response = &get_query_reply($queryid);
2346: $tries ++;
2347: }
2348:
2349: if (!&error($response) && $response ne 'refused') {
2350: if ($response eq 'unavailable') {
2351: $outcome = $response;
2352: } else {
2353: $outcome = 'ok';
2354: my @matches = split(/\n/,$response);
2355: foreach my $match (@matches) {
2356: my ($key,$value) = split(/=/,$match);
2357: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
2358: }
2359: }
2360: }
2361: }
2362: return ($outcome,%results);
2363: }
2364:
2365: sub usersearch {
2366: my ($srch) = @_;
2367: my $dom = $srch->{'srchdomain'};
2368: my %results;
2369: my %libserv = &all_library();
2370: my $query = 'usersearch';
2371: foreach my $tryserver (keys(%libserv)) {
2372: if (&host_domain($tryserver) eq $dom) {
2373: unless ($tryserver eq $perlvar{'lonHostID'}) {
2374: if ($srch->{'srchby'} eq 'email') {
2375: my $lcrev = &get_server_loncaparev($dom,$tryserver);
2376: my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
2377: next if (($major eq '' && $minor eq '') || ($major < 2) ||
2378: (($major == 2) && ($minor < 12)));
2379: }
2380: }
2381: my $host=&hostname($tryserver);
2382: my $queryid=
2383: &reply("querysend:".&escape($query).':'.
2384: &escape($srch->{'srchby'}).':'.
2385: &escape($srch->{'srchtype'}).':'.
2386: &escape($srch->{'srchterm'}),$tryserver);
2387: if ($queryid !~/^\Q$host\E\_/) {
2388: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
2389: next;
2390: }
2391: my $reply = &get_query_reply($queryid);
2392: my $maxtries = 1;
2393: my $tries = 1;
2394: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
2395: $reply = &get_query_reply($queryid);
2396: $tries ++;
2397: }
2398: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
2399: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
2400: } else {
2401: my @matches;
2402: if ($reply =~ /\n/) {
2403: @matches = split(/\n/,$reply);
2404: } else {
2405: @matches = split(/\&/,$reply);
2406: }
2407: foreach my $match (@matches) {
2408: my ($uname,$udom,%userhash);
2409: foreach my $entry (split(/:/,$match)) {
2410: my ($key,$value) =
2411: map {&unescape($_);} split(/=/,$entry);
2412: $userhash{$key} = $value;
2413: if ($key eq 'username') {
2414: $uname = $value;
2415: } elsif ($key eq 'domain') {
2416: $udom = $value;
2417: }
2418: }
2419: $results{$uname.':'.$udom} = \%userhash;
2420: }
2421: }
2422: }
2423: }
2424: return %results;
2425: }
2426:
2427: sub get_instuser {
2428: my ($udom,$uname,$id) = @_;
2429: my $homeserver = &domain($udom,'primary');
2430: my ($outcome,%results);
2431: if ($homeserver ne '') {
2432: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
2433: &escape($id).':'.&escape($udom),$homeserver);
2434: my $host=&hostname($homeserver);
2435: if ($queryid !~/^\Q$host\E\_/) {
2436: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
2437: return;
2438: }
2439: my $response = &get_query_reply($queryid);
2440: my $maxtries = 5;
2441: my $tries = 1;
2442: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2443: $response = &get_query_reply($queryid);
2444: $tries ++;
2445: }
2446: if (!&error($response) && $response ne 'refused') {
2447: if ($response eq 'unavailable') {
2448: $outcome = $response;
2449: } else {
2450: $outcome = 'ok';
2451: my @matches = split(/\n/,$response);
2452: foreach my $match (@matches) {
2453: my ($key,$value) = split(/=/,$match);
2454: $results{&unescape($key)} = &thaw_unescape($value);
2455: }
2456: }
2457: }
2458: }
2459: my %userinfo;
2460: if (ref($results{$uname}) eq 'HASH') {
2461: %userinfo = %{$results{$uname}};
2462: }
2463: return ($outcome,%userinfo);
2464: }
2465:
2466: sub get_multiple_instusers {
2467: my ($udom,$users,$caller) = @_;
2468: my ($outcome,$results);
2469: if (ref($users) eq 'HASH') {
2470: my $count = keys(%{$users});
2471: my $requested = &freeze_escape($users);
2472: my $homeserver = &domain($udom,'primary');
2473: if ($homeserver ne '') {
2474: my $queryid=&reply('querysend:getmultinstusers:::'.$caller.'='.$requested,$homeserver);
2475: my $host=&hostname($homeserver);
2476: if ($queryid !~/^\Q$host\E\_/) {
2477: &logthis('get_multiple_instusers invalid queryid: '.$queryid.
2478: ' for host: '.$homeserver.'in domain '.$udom);
2479: return ($outcome,$results);
2480: }
2481: my $response = &get_query_reply($queryid);
2482: my $maxtries = 5;
2483: if ($count > 100) {
2484: $maxtries = 1+int($count/20);
2485: }
2486: my $tries = 1;
2487: while (($response=~/^timeout/) && ($tries <= $maxtries)) {
2488: $response = &get_query_reply($queryid);
2489: $tries ++;
2490: }
2491: if ($response eq '') {
2492: $results = {};
2493: foreach my $key (keys(%{$users})) {
2494: my ($uname,$id);
2495: if ($caller eq 'id') {
2496: $id = $key;
2497: } else {
2498: $uname = $key;
2499: }
2500: my ($resp,%info) = &get_instuser($udom,$uname,$id);
2501: $outcome = $resp;
2502: if ($resp eq 'ok') {
2503: %{$results} = (%{$results}, %info);
2504: } else {
2505: last;
2506: }
2507: }
2508: } elsif(!&error($response) && ($response ne 'refused')) {
2509: if (($response eq 'unavailable') || ($response eq 'invalid') || ($response eq 'timeout')) {
2510: $outcome = $response;
2511: } else {
2512: ($outcome,my $userdata) = split(/=/,$response,2);
2513: if ($outcome eq 'ok') {
2514: $results = &thaw_unescape($userdata);
2515: }
2516: }
2517: }
2518: }
2519: }
2520: return ($outcome,$results);
2521: }
2522:
2523: sub inst_rulecheck {
2524: my ($udom,$uname,$id,$item,$rules) = @_;
2525: my %returnhash;
2526: if ($udom ne '') {
2527: if (ref($rules) eq 'ARRAY') {
2528: @{$rules} = map {&escape($_);} (@{$rules});
2529: my $rulestr = join(':',@{$rules});
2530: my $homeserver=&domain($udom,'primary');
2531: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2532: my $response;
2533: if ($item eq 'username') {
2534: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
2535: ':'.&escape($uname).':'.$rulestr,
2536: $homeserver));
2537: } elsif ($item eq 'id') {
2538: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
2539: ':'.&escape($id).':'.$rulestr,
2540: $homeserver));
2541: } elsif ($item eq 'selfcreate') {
2542: $response=&unescape(&reply('instselfcreatecheck:'.
2543: &escape($udom).':'.&escape($uname).
2544: ':'.$rulestr,$homeserver));
2545: }
2546: if ($response ne 'refused') {
2547: my @pairs=split(/\&/,$response);
2548: foreach my $item (@pairs) {
2549: my ($key,$value)=split(/=/,$item,2);
2550: $key = &unescape($key);
2551: next if ($key =~ /^error: 2 /);
2552: $returnhash{$key}=&thaw_unescape($value);
2553: }
2554: }
2555: }
2556: }
2557: }
2558: return %returnhash;
2559: }
2560:
2561: sub inst_userrules {
2562: my ($udom,$check) = @_;
2563: my (%ruleshash,@ruleorder);
2564: if ($udom ne '') {
2565: my $homeserver=&domain($udom,'primary');
2566: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2567: my $response;
2568: if ($check eq 'id') {
2569: $response=&reply('instidrules:'.&escape($udom),
2570: $homeserver);
2571: } elsif ($check eq 'email') {
2572: $response=&reply('instemailrules:'.&escape($udom),
2573: $homeserver);
2574: } else {
2575: $response=&reply('instuserrules:'.&escape($udom),
2576: $homeserver);
2577: }
2578: if (($response ne 'refused') && ($response ne 'error') &&
2579: ($response ne 'unknown_cmd') &&
2580: ($response ne 'no_such_host')) {
2581: my ($hashitems,$orderitems) = split(/:/,$response);
2582: my @pairs=split(/\&/,$hashitems);
2583: foreach my $item (@pairs) {
2584: my ($key,$value)=split(/=/,$item,2);
2585: $key = &unescape($key);
2586: next if ($key =~ /^error: 2 /);
2587: $ruleshash{$key}=&thaw_unescape($value);
2588: }
2589: my @esc_order = split(/\&/,$orderitems);
2590: foreach my $item (@esc_order) {
2591: push(@ruleorder,&unescape($item));
2592: }
2593: }
2594: }
2595: }
2596: return (\%ruleshash,\@ruleorder);
2597: }
2598:
2599: # ------------- Get Authentication, Language and User Tools Defaults for Domain
2600:
2601: sub get_domain_defaults {
2602: my ($domain,$ignore_cache) = @_;
2603: return if (($domain eq '') || ($domain eq 'public'));
2604: my $cachetime = 60*60*24;
2605: unless ($ignore_cache) {
2606: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
2607: if (defined($cached)) {
2608: if (ref($result) eq 'HASH') {
2609: return %{$result};
2610: }
2611: }
2612: }
2613: my %domdefaults;
2614: my %domconfig =
2615: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
2616: 'requestcourses','inststatus',
2617: 'coursedefaults','usersessions',
2618: 'requestauthor','selfenrollment',
2619: 'coursecategories','ssl','autoenroll',
2620: 'trust','helpsettings','wafproxy'],$domain);
2621: my @coursetypes = ('official','unofficial','community','textbook','placement');
2622: if (ref($domconfig{'defaults'}) eq 'HASH') {
2623: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
2624: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
2625: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
2626: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
2627: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
2628: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
2629: $domdefaults{'intauth_cost'} = $domconfig{'defaults'}{'intauth_cost'};
2630: $domdefaults{'intauth_switch'} = $domconfig{'defaults'}{'intauth_switch'};
2631: $domdefaults{'intauth_check'} = $domconfig{'defaults'}{'intauth_check'};
2632: } else {
2633: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
2634: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
2635: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
2636: }
2637: if (ref($domconfig{'quotas'}) eq 'HASH') {
2638: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
2639: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
2640: } else {
2641: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
2642: }
2643: my @usertools = ('aboutme','blog','webdav','portfolio');
2644: foreach my $item (@usertools) {
2645: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
2646: $domdefaults{$item} = $domconfig{'quotas'}{$item};
2647: }
2648: }
2649: if (ref($domconfig{'quotas'}{'authorquota'}) eq 'HASH') {
2650: $domdefaults{'authorquota'} = $domconfig{'quotas'}{'authorquota'};
2651: }
2652: }
2653: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
2654: foreach my $item ('official','unofficial','community','textbook','placement') {
2655: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
2656: }
2657: }
2658: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
2659: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
2660: }
2661: if (ref($domconfig{'inststatus'}) eq 'HASH') {
2662: foreach my $item ('inststatustypes','inststatusorder','inststatusguest') {
2663: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2664: }
2665: }
2666: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2667: $domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
2668: $domdefaults{'usejsme'} = $domconfig{'coursedefaults'}{'usejsme'};
2669: $domdefaults{'uselcmath'} = $domconfig{'coursedefaults'}{'uselcmath'};
2670: if (ref($domconfig{'coursedefaults'}{'postsubmit'}) eq 'HASH') {
2671: $domdefaults{'postsubmit'} = $domconfig{'coursedefaults'}{'postsubmit'}{'client'};
2672: }
2673: foreach my $type (@coursetypes) {
2674: if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
2675: unless ($type eq 'community') {
2676: $domdefaults{$type.'credits'} = $domconfig{'coursedefaults'}{'coursecredits'}{$type};
2677: }
2678: }
2679: if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
2680: $domdefaults{$type.'quota'} = $domconfig{'coursedefaults'}{'uploadquota'}{$type};
2681: }
2682: if ($domdefaults{'postsubmit'} eq 'on') {
2683: if (ref($domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}) eq 'HASH') {
2684: $domdefaults{$type.'postsubtimeout'} =
2685: $domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}{$type};
2686: }
2687: }
2688: }
2689: if (ref($domconfig{'coursedefaults'}{'canclone'}) eq 'HASH') {
2690: if (ref($domconfig{'coursedefaults'}{'canclone'}{'instcode'}) eq 'ARRAY') {
2691: my @clonecodes = @{$domconfig{'coursedefaults'}{'canclone'}{'instcode'}};
2692: if (@clonecodes) {
2693: $domdefaults{'canclone'} = join('+',@clonecodes);
2694: }
2695: }
2696: } elsif ($domconfig{'coursedefaults'}{'canclone'}) {
2697: $domdefaults{'canclone'}=$domconfig{'coursedefaults'}{'canclone'};
2698: }
2699: if ($domconfig{'coursedefaults'}{'texengine'}) {
2700: $domdefaults{'texengine'} = $domconfig{'coursedefaults'}{'texengine'};
2701: }
2702: }
2703: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2704: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2705: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2706: }
2707: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2708: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2709: }
2710: if (ref($domconfig{'usersessions'}{'offloadnow'}) eq 'HASH') {
2711: $domdefaults{'offloadnow'} = $domconfig{'usersessions'}{'offloadnow'};
2712: }
2713: if (ref($domconfig{'usersessions'}{'offloadoth'}) eq 'HASH') {
2714: $domdefaults{'offloadoth'} = $domconfig{'usersessions'}{'offloadoth'};
2715: }
2716: }
2717: if (ref($domconfig{'selfenrollment'}) eq 'HASH') {
2718: if (ref($domconfig{'selfenrollment'}{'admin'}) eq 'HASH') {
2719: my @settings = ('types','registered','enroll_dates','access_dates','section',
2720: 'approval','limit');
2721: foreach my $type (@coursetypes) {
2722: if (ref($domconfig{'selfenrollment'}{'admin'}{$type}) eq 'HASH') {
2723: my @mgrdc = ();
2724: foreach my $item (@settings) {
2725: if ($domconfig{'selfenrollment'}{'admin'}{$type}{$item} eq '0') {
2726: push(@mgrdc,$item);
2727: }
2728: }
2729: if (@mgrdc) {
2730: $domdefaults{$type.'selfenrolladmdc'} = join(',',@mgrdc);
2731: }
2732: }
2733: }
2734: }
2735: if (ref($domconfig{'selfenrollment'}{'default'}) eq 'HASH') {
2736: foreach my $type (@coursetypes) {
2737: if (ref($domconfig{'selfenrollment'}{'default'}{$type}) eq 'HASH') {
2738: foreach my $item (keys(%{$domconfig{'selfenrollment'}{'default'}{$type}})) {
2739: $domdefaults{$type.'selfenroll'.$item} = $domconfig{'selfenrollment'}{'default'}{$type}{$item};
2740: }
2741: }
2742: }
2743: }
2744: }
2745: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
2746: $domdefaults{'catauth'} = 'std';
2747: $domdefaults{'catunauth'} = 'std';
2748: if ($domconfig{'coursecategories'}{'auth'}) {
2749: $domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};
2750: }
2751: if ($domconfig{'coursecategories'}{'unauth'}) {
2752: $domdefaults{'catunauth'} = $domconfig{'coursecategories'}{'unauth'};
2753: }
2754: }
2755: if (ref($domconfig{'ssl'}) eq 'HASH') {
2756: if (ref($domconfig{'ssl'}{'replication'}) eq 'HASH') {
2757: $domdefaults{'replication'} = $domconfig{'ssl'}{'replication'};
2758: }
2759: if (ref($domconfig{'ssl'}{'connto'}) eq 'HASH') {
2760: $domdefaults{'connect'} = $domconfig{'ssl'}{'connto'};
2761: }
2762: if (ref($domconfig{'ssl'}{'connfrom'}) eq 'HASH') {
2763: $domdefaults{'connect'} = $domconfig{'ssl'}{'connfrom'};
2764: }
2765: }
2766: if (ref($domconfig{'trust'}) eq 'HASH') {
2767: my @prefixes = qw(content shared enroll othcoau coaurem domroles catalog reqcrs msg);
2768: foreach my $prefix (@prefixes) {
2769: if (ref($domconfig{'trust'}{$prefix}) eq 'HASH') {
2770: $domdefaults{'trust'.$prefix} = $domconfig{'trust'}{$prefix};
2771: }
2772: }
2773: }
2774: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
2775: $domdefaults{'autofailsafe'} = $domconfig{'autoenroll'}{'autofailsafe'};
2776: }
2777: if (ref($domconfig{'helpsettings'}) eq 'HASH') {
2778: $domdefaults{'submitbugs'} = $domconfig{'helpsettings'}{'submitbugs'};
2779: if (ref($domconfig{'helpsettings'}{'adhoc'}) eq 'HASH') {
2780: $domdefaults{'adhocroles'} = $domconfig{'helpsettings'}{'adhoc'};
2781: }
2782: }
2783: if (ref($domconfig{'wafproxy'}) eq 'HASH') {
2784: foreach my $item ('ipheader','trusted','vpnint','vpnext','sslopt') {
2785: if ($domconfig{'wafproxy'}{$item}) {
2786: $domdefaults{'waf_'.$item} = $domconfig{'wafproxy'}{$item};
2787: }
2788: }
2789: }
2790: &do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
2791: return %domdefaults;
2792: }
2793:
2794: sub get_dom_cats {
2795: my ($dom) = @_;
2796: return unless (&domain($dom));
2797: my ($cats,$cached)=&is_cached_new('cats',$dom);
2798: unless (defined($cached)) {
2799: my %domconfig = &get_dom('configuration',['coursecategories'],$dom);
2800: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
2801: if (ref($domconfig{'coursecategories'}{'cats'}) eq 'HASH') {
2802: %{$cats} = %{$domconfig{'coursecategories'}{'cats'}};
2803: } else {
2804: $cats = {};
2805: }
2806: } else {
2807: $cats = {};
2808: }
2809: &Apache::lonnet::do_cache_new('cats',$dom,$cats,3600);
2810: }
2811: return $cats;
2812: }
2813:
2814: sub get_dom_instcats {
2815: my ($dom) = @_;
2816: return unless (&domain($dom));
2817: my ($instcats,$cached)=&is_cached_new('instcats',$dom);
2818: unless (defined($cached)) {
2819: my (%coursecodes,%codes,@codetitles,%cat_titles,%cat_order);
2820: my $totcodes = &retrieve_instcodes(\%coursecodes,$dom);
2821: if ($totcodes > 0) {
2822: my $caller = 'global';
2823: if (&auto_instcode_format($caller,$dom,\%coursecodes,\%codes,
2824: \@codetitles,\%cat_titles,\%cat_order) eq 'ok') {
2825: $instcats = {
2826: codes => \%codes,
2827: codetitles => \@codetitles,
2828: cat_titles => \%cat_titles,
2829: cat_order => \%cat_order,
2830: };
2831: &do_cache_new('instcats',$dom,$instcats,3600);
2832: }
2833: }
2834: }
2835: return $instcats;
2836: }
2837:
2838: sub retrieve_instcodes {
2839: my ($coursecodes,$dom) = @_;
2840: my $totcodes;
2841: my %courses = &courseiddump($dom,'.',1,'.','.','.',undef,undef,'Course');
2842: foreach my $course (keys(%courses)) {
2843: if (ref($courses{$course}) eq 'HASH') {
2844: if ($courses{$course}{'inst_code'} ne '') {
2845: $$coursecodes{$course} = $courses{$course}{'inst_code'};
2846: $totcodes ++;
2847: }
2848: }
2849: }
2850: return $totcodes;
2851: }
2852:
2853: sub course_portal_url {
2854: my ($cnum,$cdom,$r) = @_;
2855: my $chome = &homeserver($cnum,$cdom);
2856: my $hostname = &hostname($chome);
2857: my $protocol = $protocol{$chome};
2858: $protocol = 'http' if ($protocol ne 'https');
2859: my %domdefaults = &get_domain_defaults($cdom);
2860: my $firsturl;
2861: if ($domdefaults{'portal_def'}) {
2862: $firsturl = $domdefaults{'portal_def'};
2863: } else {
2864: my $alias = &Apache::lonnet::use_proxy_alias($r,$chome);
2865: $hostname = $alias if ($alias ne '');
2866: $firsturl = $protocol.'://'.$hostname;
2867: }
2868: return $firsturl;
2869: }
2870:
2871: # --------------------------------------------- Get domain config for passwords
2872:
2873: sub get_passwdconf {
2874: my ($dom) = @_;
2875: my (%passwdconf,$gotconf,$lookup);
2876: my ($result,$cached)=&is_cached_new('passwdconf',$dom);
2877: if (defined($cached)) {
2878: if (ref($result) eq 'HASH') {
2879: %passwdconf = %{$result};
2880: $gotconf = 1;
2881: }
2882: }
2883: unless ($gotconf) {
2884: my %domconfig = &get_dom('configuration',['passwords'],$dom);
2885: if (ref($domconfig{'passwords'}) eq 'HASH') {
2886: %passwdconf = %{$domconfig{'passwords'}};
2887: }
2888: my $cachetime = 24*60*60;
2889: &do_cache_new('passwdconf',$dom,\%passwdconf,$cachetime);
2890: }
2891: return %passwdconf;
2892: }
2893:
2894: # --------------------------------------------------- Assign a key to a student
2895:
2896: sub assign_access_key {
2897: #
2898: # a valid key looks like uname:udom#comments
2899: # comments are being appended
2900: #
2901: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2902: $kdom=
2903: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2904: $knum=
2905: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2906: $cdom=
2907: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2908: $cnum=
2909: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2910: $udom=$env{'user.name'} unless (defined($udom));
2911: $uname=$env{'user.domain'} unless (defined($uname));
2912: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2913: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2914: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2915: # assigned to this person
2916: # - this should not happen,
2917: # unless something went wrong
2918: # the first time around
2919: # ready to assign
2920: $logentry=$1.'; '.$logentry;
2921: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2922: $kdom,$knum) eq 'ok') {
2923: # key now belongs to user
2924: my $envkey='key.'.$cdom.'_'.$cnum;
2925: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2926: &appenv({'environment.'.$envkey => $ckey});
2927: return 'ok';
2928: } else {
2929: return
2930: 'error: Count not permanently assign key, will need to be re-entered later.';
2931: }
2932: } else {
2933: return 'error: Could not assign key, try again later.';
2934: }
2935: } elsif (!$existing{$ckey}) {
2936: # the key does not exist
2937: return 'error: The key does not exist';
2938: } else {
2939: # the key is somebody else's
2940: return 'error: The key is already in use';
2941: }
2942: }
2943:
2944: # ------------------------------------------ put an additional comment on a key
2945:
2946: sub comment_access_key {
2947: #
2948: # a valid key looks like uname:udom#comments
2949: # comments are being appended
2950: #
2951: my ($ckey,$cdom,$cnum,$logentry)=@_;
2952: $cdom=
2953: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2954: $cnum=
2955: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2956: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2957: if ($existing{$ckey}) {
2958: $existing{$ckey}.='; '.$logentry;
2959: # ready to assign
2960: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2961: $cdom,$cnum) eq 'ok') {
2962: return 'ok';
2963: } else {
2964: return 'error: Count not store comment.';
2965: }
2966: } else {
2967: # the key does not exist
2968: return 'error: The key does not exist';
2969: }
2970: }
2971:
2972: # ------------------------------------------------------ Generate a set of keys
2973:
2974: sub generate_access_keys {
2975: my ($number,$cdom,$cnum,$logentry)=@_;
2976: $cdom=
2977: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2978: $cnum=
2979: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2980: unless (&allowed('mky',$cdom)) { return 0; }
2981: unless (($cdom) && ($cnum)) { return 0; }
2982: if ($number>10000) { return 0; }
2983: sleep(2); # make sure don't get same seed twice
2984: srand(time()^($$+($$<<15))); # from "Programming Perl"
2985: my $total=0;
2986: for (my $i=1;$i<=$number;$i++) {
2987: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2988: sprintf("%lx",int(100000*rand)).'-'.
2989: sprintf("%lx",int(100000*rand));
2990: $newkey=~s/1/g/g; # folks mix up 1 and l
2991: $newkey=~s/0/h/g; # and also 0 and O
2992: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2993: if ($existing{$newkey}) {
2994: $i--;
2995: } else {
2996: if (&put('accesskeys',
2997: { $newkey => '# generated '.localtime().
2998: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2999: '; '.$logentry },
3000: $cdom,$cnum) eq 'ok') {
3001: $total++;
3002: }
3003: }
3004: }
3005: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
3006: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
3007: return $total;
3008: }
3009:
3010: # ------------------------------------------------------- Validate an accesskey
3011:
3012: sub validate_access_key {
3013: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
3014: $cdom=
3015: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
3016: $cnum=
3017: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
3018: $udom=$env{'user.domain'} unless (defined($udom));
3019: $uname=$env{'user.name'} unless (defined($uname));
3020: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
3021: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
3022: }
3023:
3024: # ------------------------------------- Find the section of student in a course
3025: sub devalidate_getsection_cache {
3026: my ($udom,$unam,$courseid)=@_;
3027: my $hashid="$udom:$unam:$courseid";
3028: &devalidate_cache_new('getsection',$hashid);
3029: }
3030:
3031: sub courseid_to_courseurl {
3032: my ($courseid) = @_;
3033: #already url style courseid
3034: return $courseid if ($courseid =~ m{^/});
3035:
3036: if (exists($env{'course.'.$courseid.'.num'})) {
3037: my $cnum = $env{'course.'.$courseid.'.num'};
3038: my $cdom = $env{'course.'.$courseid.'.domain'};
3039: return "/$cdom/$cnum";
3040: }
3041:
3042: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
3043: if (exists($courseinfo{'num'})) {
3044: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
3045: }
3046:
3047: return undef;
3048: }
3049:
3050: sub getsection {
3051: my ($udom,$unam,$courseid)=@_;
3052: my $cachetime=1800;
3053:
3054: my $hashid="$udom:$unam:$courseid";
3055: my ($result,$cached)=&is_cached_new('getsection',$hashid);
3056: if (defined($cached)) { return $result; }
3057:
3058: my %Pending;
3059: my %Expired;
3060: #
3061: # Each role can either have not started yet (pending), be active,
3062: # or have expired.
3063: #
3064: # If there is an active role, we are done.
3065: #
3066: # If there is more than one role which has not started yet,
3067: # choose the one which will start sooner
3068: # If there is one role which has not started yet, return it.
3069: #
3070: # If there is more than one expired role, choose the one which ended last.
3071: # If there is a role which has expired, return it.
3072: #
3073: $courseid = &courseid_to_courseurl($courseid);
3074: my %roleshash = &dump('roles',$udom,$unam,$courseid);
3075: foreach my $key (keys(%roleshash)) {
3076: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
3077: my $section=$1;
3078: if ($key eq $courseid.'_st') { $section=''; }
3079: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
3080: my $now=time;
3081: if (defined($end) && $end && ($now > $end)) {
3082: $Expired{$end}=$section;
3083: next;
3084: }
3085: if (defined($start) && $start && ($now < $start)) {
3086: $Pending{$start}=$section;
3087: next;
3088: }
3089: return &do_cache_new('getsection',$hashid,$section,$cachetime);
3090: }
3091: #
3092: # Presumedly there will be few matching roles from the above
3093: # loop and the sorting time will be negligible.
3094: if (scalar(keys(%Pending))) {
3095: my ($time) = sort {$a <=> $b} keys(%Pending);
3096: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
3097: }
3098: if (scalar(keys(%Expired))) {
3099: my @sorted = sort {$a <=> $b} keys(%Expired);
3100: my $time = pop(@sorted);
3101: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
3102: }
3103: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
3104: }
3105:
3106: sub save_cache {
3107: &purge_remembered();
3108: #&Apache::loncommon::validate_page();
3109: undef(%env);
3110: undef($env_loaded);
3111: }
3112:
3113: my $to_remember=-1;
3114: my %remembered;
3115: my %accessed;
3116: my $kicks=0;
3117: my $hits=0;
3118: sub make_key {
3119: my ($name,$id) = @_;
3120: if (length($id) > 65
3121: && length(&escape($id)) > 200) {
3122: $id=length($id).':'.&Digest::MD5::md5_hex($id);
3123: }
3124: return &escape($name.':'.$id);
3125: }
3126:
3127: sub devalidate_cache_new {
3128: my ($name,$id,$debug) = @_;
3129: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
3130: my $remembered_id=$name.':'.$id;
3131: $id=&make_key($name,$id);
3132: $memcache->delete($id);
3133: delete($remembered{$remembered_id});
3134: delete($accessed{$remembered_id});
3135: }
3136:
3137: sub is_cached_new {
3138: my ($name,$id,$debug) = @_;
3139: my $remembered_id=$name.':'.$id; # this is to avoid make_key (which is slow) whenever possible
3140: if (exists($remembered{$remembered_id})) {
3141: if ($debug) { &Apache::lonnet::logthis("Early return $remembered_id of $remembered{$remembered_id} "); }
3142: $accessed{$remembered_id}=[&gettimeofday()];
3143: $hits++;
3144: return ($remembered{$remembered_id},1);
3145: }
3146: $id=&make_key($name,$id);
3147: my $value = $memcache->get($id);
3148: if (!(defined($value))) {
3149: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
3150: return (undef,undef);
3151: }
3152: if ($value eq '__undef__') {
3153: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
3154: $value=undef;
3155: }
3156: &make_room($remembered_id,$value,$debug);
3157: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
3158: return ($value,1);
3159: }
3160:
3161: sub do_cache_new {
3162: my ($name,$id,$value,$time,$debug) = @_;
3163: my $remembered_id=$name.':'.$id;
3164: $id=&make_key($name,$id);
3165: my $setvalue=$value;
3166: if (!defined($setvalue)) {
3167: $setvalue='__undef__';
3168: }
3169: if (!defined($time) ) {
3170: $time=600;
3171: }
3172: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
3173: my $result = $memcache->set($id,$setvalue,$time);
3174: if (! $result) {
3175: &logthis("caching of id -> $id failed");
3176: $memcache->disconnect_all();
3177: }
3178: # need to make a copy of $value
3179: &make_room($remembered_id,$value,$debug);
3180: return $value;
3181: }
3182:
3183: sub make_room {
3184: my ($remembered_id,$value,$debug)=@_;
3185:
3186: $remembered{$remembered_id}= (ref($value)) ? &Storable::dclone($value)
3187: : $value;
3188: if ($to_remember<0) { return; }
3189: $accessed{$remembered_id}=[&gettimeofday()];
3190: if (scalar(keys(%remembered)) <= $to_remember) { return; }
3191: my $to_kick;
3192: my $max_time=0;
3193: foreach my $other (keys(%accessed)) {
3194: if (&tv_interval($accessed{$other}) > $max_time) {
3195: $to_kick=$other;
3196: $max_time=&tv_interval($accessed{$other});
3197: }
3198: }
3199: delete($remembered{$to_kick});
3200: delete($accessed{$to_kick});
3201: $kicks++;
3202: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
3203: return;
3204: }
3205:
3206: sub purge_remembered {
3207: #&logthis("Tossing ".scalar(keys(%remembered)));
3208: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
3209: undef(%remembered);
3210: undef(%accessed);
3211: }
3212: # ------------------------------------- Read an entry from a user's environment
3213:
3214: sub userenvironment {
3215: my ($udom,$unam,@what)=@_;
3216: my $items;
3217: foreach my $item (@what) {
3218: $items.=&escape($item).'&';
3219: }
3220: $items=~s/\&$//;
3221: my %returnhash=();
3222: my $uhome = &homeserver($unam,$udom);
3223: unless ($uhome eq 'no_host') {
3224: my @answer=split(/\&/,
3225: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
3226: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
3227: return %returnhash;
3228: }
3229: my $i;
3230: for ($i=0;$i<=$#what;$i++) {
3231: $returnhash{$what[$i]}=&unescape($answer[$i]);
3232: }
3233: }
3234: return %returnhash;
3235: }
3236:
3237: # ---------------------------------------------------------- Get a studentphoto
3238: sub studentphoto {
3239: my ($udom,$unam,$ext) = @_;
3240: my $home=&Apache::lonnet::homeserver($unam,$udom);
3241: if (defined($env{'request.course.id'})) {
3242: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
3243: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
3244: return(&retrievestudentphoto($udom,$unam,$ext));
3245: } else {
3246: my ($result,$perm_reqd)=
3247: &Apache::lonnet::auto_photo_permission($unam,$udom);
3248: if ($result eq 'ok') {
3249: if (!($perm_reqd eq 'yes')) {
3250: return(&retrievestudentphoto($udom,$unam,$ext));
3251: }
3252: }
3253: }
3254: }
3255: } else {
3256: my ($result,$perm_reqd) =
3257: &Apache::lonnet::auto_photo_permission($unam,$udom);
3258: if ($result eq 'ok') {
3259: if (!($perm_reqd eq 'yes')) {
3260: return(&retrievestudentphoto($udom,$unam,$ext));
3261: }
3262: }
3263: }
3264: return '/adm/lonKaputt/lonlogo_broken.gif';
3265: }
3266:
3267: sub retrievestudentphoto {
3268: my ($udom,$unam,$ext,$type) = @_;
3269: my $home=&Apache::lonnet::homeserver($unam,$udom);
3270: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
3271: if ($ret eq 'ok') {
3272: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
3273: if ($type eq 'thumbnail') {
3274: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
3275: }
3276: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
3277: return $tokenurl;
3278: } else {
3279: if ($type eq 'thumbnail') {
3280: return '/adm/lonKaputt/genericstudent_tn.gif';
3281: } else {
3282: return '/adm/lonKaputt/lonlogo_broken.gif';
3283: }
3284: }
3285: }
3286:
3287: # -------------------------------------------------------------------- New chat
3288:
3289: sub chatsend {
3290: my ($newentry,$anon,$group)=@_;
3291: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
3292: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3293: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
3294: &reply('chatsend:'.$cdom.':'.$cnum.':'.
3295: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
3296: &escape($newentry)).':'.$group,$chome);
3297: }
3298:
3299: # ------------------------------------------ Find current version of a resource
3300:
3301: sub getversion {
3302: my $fname=&clutter(shift);
3303: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
3304: return ¤tversion(&filelocation('',$fname));
3305: }
3306:
3307: sub currentversion {
3308: my $fname=shift;
3309: my $author=$fname;
3310: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3311: my ($udom,$uname)=split(/\//,$author);
3312: my $home=&homeserver($uname,$udom);
3313: if ($home eq 'no_host') {
3314: return -1;
3315: }
3316: my $answer=&reply("currentversion:$fname",$home);
3317: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3318: return -1;
3319: }
3320: return $answer;
3321: }
3322:
3323: #
3324: # Return special version number of resource if set by override, empty otherwise
3325: #
3326: sub usedversion {
3327: my $fname=shift;
3328: unless ($fname) { $fname=$env{'request.uri'}; }
3329: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
3330: if ($urlversion) { return $urlversion; }
3331: return '';
3332: }
3333:
3334: # ----------------------------- Subscribe to a resource, return URL if possible
3335:
3336: sub subscribe {
3337: my $fname=shift;
3338: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
3339: $fname=~s/[\n\r]//g;
3340: my $author=$fname;
3341: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3342: my ($udom,$uname)=split(/\//,$author);
3343: my $home=homeserver($uname,$udom);
3344: if ($home eq 'no_host') {
3345: return 'not_found';
3346: }
3347: my $answer=reply("sub:$fname",$home);
3348: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3349: $answer.=' by '.$home;
3350: }
3351: return $answer;
3352: }
3353:
3354: # -------------------------------------------------------------- Replicate file
3355:
3356: sub repcopy {
3357: my $filename=shift;
3358: $filename=~s/\/+/\//g;
3359: my $londocroot = $perlvar{'lonDocRoot'};
3360: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
3361: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
3362: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
3363: $filename=~m{^/*(uploaded|editupload)/}) {
3364: return &repcopy_userfile($filename);
3365: }
3366: $filename=~s/[\n\r]//g;
3367: my $transname="$filename.in.transfer";
3368: # FIXME: this should flock
3369: if ((-e $filename) || (-e $transname)) { return 'ok'; }
3370: my $remoteurl=subscribe($filename);
3371: if ($remoteurl =~ /^con_lost by/) {
3372: &logthis("Subscribe returned $remoteurl: $filename");
3373: return 'unavailable';
3374: } elsif ($remoteurl eq 'not_found') {
3375: #&logthis("Subscribe returned not_found: $filename");
3376: return 'not_found';
3377: } elsif ($remoteurl =~ /^rejected by/) {
3378: &logthis("Subscribe returned $remoteurl: $filename");
3379: return 'forbidden';
3380: } elsif ($remoteurl eq 'directory') {
3381: return 'ok';
3382: } else {
3383: my $author=$filename;
3384: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3385: my ($udom,$uname)=split(/\//,$author);
3386: my $home=homeserver($uname,$udom);
3387: unless ($home eq $perlvar{'lonHostID'}) {
3388: my @parts=split(/\//,$filename);
3389: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
3390: if ($path ne "$londocroot/res") {
3391: &logthis("Malconfiguration for replication: $filename");
3392: return 'bad_request';
3393: }
3394: my $count;
3395: for ($count=5;$count<$#parts;$count++) {
3396: $path.="/$parts[$count]";
3397: if ((-e $path)!=1) {
3398: mkdir($path,0777);
3399: }
3400: }
3401: my $request=new HTTP::Request('GET',"$remoteurl");
3402: my $response;
3403: if ($remoteurl =~ m{/raw/}) {
3404: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',0,1);
3405: } else {
3406: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',1);
3407: }
3408: if ($response->is_error()) {
3409: unlink($transname);
3410: my $message=$response->status_line;
3411: &logthis("<font color=\"blue\">WARNING:"
3412: ." LWP get: $message: $filename</font>");
3413: return 'unavailable';
3414: } else {
3415: if ($remoteurl!~/\.meta$/) {
3416: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
3417: my $mresponse;
3418: if ($remoteurl =~ m{/raw/}) {
3419: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',0,1);
3420: } else {
3421: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',1);
3422: }
3423: if ($mresponse->is_error()) {
3424: unlink($filename.'.meta');
3425: &logthis(
3426: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
3427: }
3428: }
3429: rename($transname,$filename);
3430: return 'ok';
3431: }
3432: }
3433: }
3434: }
3435:
3436: # ------------------------------------------------- Unsubscribe from a resource
3437:
3438: sub unsubscribe {
3439: my ($fname) = @_;
3440: my $answer;
3441: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return $answer; }
3442: $fname=~s/[\n\r]//g;
3443: my $author=$fname;
3444: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3445: my ($udom,$uname)=split(/\//,$author);
3446: my $home=homeserver($uname,$udom);
3447: if ($home eq 'no_host') {
3448: $answer = 'no_host';
3449: } elsif (grep { $_ eq $home } ¤t_machine_ids()) {
3450: $answer = 'home';
3451: } else {
3452: my $defdom = $perlvar{'lonDefDomain'};
3453: if (&will_trust('content',$defdom,$udom)) {
3454: $answer = reply("unsub:$fname",$home);
3455: } else {
3456: $answer = 'untrusted';
3457: }
3458: }
3459: return $answer;
3460: }
3461:
3462: # ------------------------------------------------ Get server side include body
3463: sub ssi_body {
3464: my ($filelink,%form)=@_;
3465: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
3466: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
3467: }
3468: my $output='';
3469: my $response;
3470: if ($filelink=~/^https?\:/) {
3471: ($output,$response)=&externalssi($filelink);
3472: } else {
3473: $filelink .= $filelink=~/\?/ ? '&' : '?';
3474: $filelink .= 'inhibitmenu=yes';
3475: ($output,$response)=&ssi($filelink,%form);
3476: }
3477: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
3478: $output=~s/^.*?\<body[^\>]*\>//si;
3479: $output=~s/\<\/body\s*\>.*?$//si;
3480: if (wantarray) {
3481: return ($output, $response);
3482: } else {
3483: return $output;
3484: }
3485: }
3486:
3487: # --------------------------------------------------------- Server Side Include
3488:
3489: sub absolute_url {
3490: my ($host_name,$unalias,$keep_proto) = @_;
3491: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
3492: if ($host_name eq '') {
3493: $host_name = $ENV{'SERVER_NAME'};
3494: }
3495: if ($unalias) {
3496: my $alias = &get_proxy_alias();
3497: if ($alias eq $host_name) {
3498: my $lonhost = $perlvar{'lonHostID'};
3499: my $hostname = &hostname($lonhost);
3500: my $lcproto;
3501: if (($keep_proto) || ($hostname eq '')) {
3502: $lcproto = $protocol;
3503: } else {
3504: $lcproto = $protocol{$lonhost};
3505: $lcproto = 'http' if ($lcproto ne 'https');
3506: $lcproto .= '://';
3507: }
3508: unless ($hostname eq '') {
3509: return $lcproto.$hostname;
3510: }
3511: }
3512: }
3513: return $protocol.$host_name;
3514: }
3515:
3516: #
3517: # Server side include.
3518: # Parameters:
3519: # fn Possibly encrypted resource name/id.
3520: # form Hash that describes how the rendering should be done
3521: # and other things.
3522: # Returns:
3523: # Scalar context: The content of the response.
3524: # Array context: 2 element list of the content and the full response object.
3525: #
3526: sub ssi {
3527:
3528: my ($fn,%form)=@_;
3529: my ($host,$request,$response);
3530: $host = &absolute_url('',1);
3531:
3532: $form{'no_update_last_known'}=1;
3533: &Apache::lonenc::check_encrypt(\$fn);
3534: if (%form) {
3535: $request=new HTTP::Request('POST',$host.$fn);
3536: $request->content(join('&',map {
3537: my $name = escape($_);
3538: "$name=" . ( ref($form{$_}) eq 'ARRAY'
3539: ? join("&$name=", map {escape($_) } @{$form{$_}})
3540: : &escape($form{$_}) );
3541: } keys(%form)));
3542: } else {
3543: $request=new HTTP::Request('GET',$host.$fn);
3544: }
3545:
3546: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
3547: my $lonhost = $perlvar{'lonHostID'};
3548: my $islocal;
3549: if (($env{'request.course.id'}) &&
3550: ($form{'grade_courseid'} eq $env{'request.course.id'}) &&
3551: ($form{'grade_username'} ne '') && ($form{'grade_domain'} ne '') &&
3552: ($form{'grade_symb'} ne '') &&
3553: (&Apache::lonnet::allowed('mgr',$env{'request.course.id'}.
3554: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:'')))) {
3555: $islocal = 1;
3556: }
3557: $response= &LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,
3558: '','','',$islocal);
3559:
3560: if (wantarray) {
3561: return ($response->content, $response);
3562: } else {
3563: return $response->content;
3564: }
3565: }
3566:
3567: sub externalssi {
3568: my ($url)=@_;
3569: my $request=new HTTP::Request('GET',$url);
3570: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar);
3571: if (wantarray) {
3572: return ($response->content, $response);
3573: } else {
3574: return $response->content;
3575: }
3576: }
3577:
3578:
3579: # If the local copy of a replicated resource is outdated, trigger a
3580: # connection from the homeserver to flush the delayed queue. If no update
3581: # happens, remove local copies of outdated resource (and corresponding
3582: # metadata file).
3583:
3584: sub remove_stale_resfile {
3585: my ($url) = @_;
3586: my $removed;
3587: if ($url=~m{^/res/($match_domain)/($match_username)/}) {
3588: my $audom = $1;
3589: my $auname = $2;
3590: unless (($url =~ /\.\d+\.\w+$/) || ($url =~ m{^/res/lib/templates/})) {
3591: my $homeserver = &homeserver($auname,$audom);
3592: unless (($homeserver eq 'no_host') ||
3593: (grep { $_ eq $homeserver } ¤t_machine_ids())) {
3594: my $fname = &filelocation('',$url);
3595: if (-e $fname) {
3596: my $hostname = &hostname($homeserver);
3597: if ($hostname) {
3598: my $protocol = $protocol{$homeserver};
3599: $protocol = 'http' if ($protocol ne 'https');
3600: my $uri = &declutter($url);
3601: my $request=new HTTP::Request('HEAD',$protocol.'://'.$hostname.'/raw/'.$uri);
3602: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,5,0,1);
3603: if ($response->is_success()) {
3604: my $remmodtime = &HTTP::Date::str2time( $response->header('Last-modified') );
3605: my $locmodtime = (stat($fname))[9];
3606: if ($locmodtime < $remmodtime) {
3607: my $stale;
3608: my $answer = &reply('pong',$homeserver);
3609: if ($answer eq $homeserver.':'.$perlvar{'lonHostID'}) {
3610: sleep(0.2);
3611: $locmodtime = (stat($fname))[9];
3612: if ($locmodtime < $remmodtime) {
3613: my $posstransfer = $fname.'.in.transfer';
3614: if ((-e $posstransfer) && ($remmodtime < (stat($posstransfer))[9])) {
3615: $removed = 1;
3616: } else {
3617: $stale = 1;
3618: }
3619: } else {
3620: $removed = 1;
3621: }
3622: } else {
3623: $stale = 1;
3624: }
3625: if ($stale) {
3626: if (unlink($fname)) {
3627: if ($uri!~/\.meta$/) {
3628: if (-e $fname.'.meta') {
3629: unlink($fname.'.meta');
3630: }
3631: }
3632: my $unsubresult = &unsubscribe($fname);
3633: unless ($unsubresult eq 'ok') {
3634: &logthis("no unsub of $fname from $homeserver, reason: $unsubresult");
3635: }
3636: $removed = 1;
3637: }
3638: }
3639: }
3640: }
3641: }
3642: }
3643: }
3644: }
3645: }
3646: return $removed;
3647: }
3648:
3649: # -------------------------------- Allow a /uploaded/ URI to be vouched for
3650:
3651: sub allowuploaded {
3652: my ($srcurl,$url)=@_;
3653: $url=&clutter(&declutter($url));
3654: my $dir=$url;
3655: $dir=~s/\/[^\/]+$//;
3656: my %httpref=();
3657: my $httpurl=&hreflocation('',$url);
3658: $httpref{'httpref.'.$httpurl}=$srcurl;
3659: &Apache::lonnet::appenv(\%httpref);
3660: }
3661:
3662: #
3663: # Determine if the current user should be able to edit a particular resource,
3664: # when viewing in course context.
3665: # (a) When viewing resource used to determine if "Edit" item is included in
3666: # Functions.
3667: # (b) When displaying folder contents in course editor, used to determine if
3668: # "Edit" link will be displayed alongside resource.
3669: #
3670: # input: six args -- filename (decluttered), course number, course domain,
3671: # url, symb (if registered) and group (if this is a group
3672: # item -- e.g., bulletin board, group page etc.).
3673: # output: array of five scalars --
3674: # $cfile -- url for file editing if editable on current server
3675: # $home -- homeserver of resource (i.e., for author if published,
3676: # or course if uploaded.).
3677: # $switchserver -- 1 if server switch will be needed.
3678: # $forceedit -- 1 if icon/link should be to go to edit mode
3679: # $forceview -- 1 if icon/link should be to go to view mode
3680: #
3681:
3682: sub can_edit_resource {
3683: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
3684: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
3685: #
3686: # For aboutme pages user can only edit his/her own.
3687: #
3688: if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
3689: my ($sdom,$sname) = ($1,$2);
3690: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
3691: $home = $env{'user.home'};
3692: $cfile = $resurl;
3693: if ($env{'form.forceedit'}) {
3694: $forceview = 1;
3695: } else {
3696: $forceedit = 1;
3697: }
3698: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3699: } else {
3700: return;
3701: }
3702: }
3703:
3704: if ($env{'request.course.id'}) {
3705: my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
3706: if ($group ne '') {
3707: # if this is a group homepage or group bulletin board, check group privs
3708: my $allowed = 0;
3709: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
3710: if ((&allowed('mdg',$env{'request.course.id'}.
3711: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3712: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3713: $allowed = 1;
3714: }
3715: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
3716: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3717: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3718: $allowed = 1;
3719: }
3720: }
3721: if ($allowed) {
3722: $home=&homeserver($cnum,$cdom);
3723: if ($env{'form.forceedit'}) {
3724: $forceview = 1;
3725: } else {
3726: $forceedit = 1;
3727: }
3728: $cfile = $resurl;
3729: } else {
3730: return;
3731: }
3732: } else {
3733: if ($resurl =~ m{^/?adm/viewclasslist$}) {
3734: unless (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
3735: return;
3736: }
3737: } elsif (!$crsedit) {
3738: #
3739: # No edit allowed where CC has switched to student role.
3740: #
3741: return;
3742: }
3743: }
3744: }
3745:
3746: if ($file ne '') {
3747: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
3748: if (&is_course_upload($file,$cnum,$cdom)) {
3749: $uploaded = 1;
3750: $incourse = 1;
3751: if ($file =~/\.(htm|html|css|js|txt)$/) {
3752: $cfile = &hreflocation('',$file);
3753: if ($env{'form.forceedit'}) {
3754: $forceview = 1;
3755: } else {
3756: $forceedit = 1;
3757: }
3758: }
3759: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
3760: $incourse = 1;
3761: if ($env{'form.forceedit'}) {
3762: $forceview = 1;
3763: } else {
3764: $forceedit = 1;
3765: }
3766: $cfile = $resurl;
3767: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
3768: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
3769: $incourse = 1;
3770: if ($env{'form.forceedit'}) {
3771: $forceview = 1;
3772: } else {
3773: $forceedit = 1;
3774: }
3775: $cfile = $resurl;
3776: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem') {
3777: $incourse = 1;
3778: $cfile = $resurl.'/smpedit';
3779: } elsif ($resurl =~ m{^/adm/wrapper/ext/}) {
3780: $incourse = 1;
3781: if ($env{'form.forceedit'}) {
3782: $forceview = 1;
3783: } else {
3784: $forceedit = 1;
3785: }
3786: $cfile = $resurl;
3787: } elsif (($resurl =~ m{^/ext/}) && ($symb ne '')) {
3788: my ($map,$id,$res) = &decode_symb($symb);
3789: if ($map =~ /\.page$/) {
3790: $incourse = 1;
3791: if ($env{'form.forceedit'}) {
3792: $forceview = 1;
3793: $cfile = $map;
3794: } else {
3795: $forceedit = 1;
3796: $cfile = '/adm/wrapper'.$resurl;
3797: }
3798: }
3799: } elsif ($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) {
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/viewclasslist$}) {
3808: $incourse = 1;
3809: if ($env{'form.forceedit'}) {
3810: $forceview = 1;
3811: } else {
3812: $forceedit = 1;
3813: }
3814: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3815: }
3816: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
3817: my $template = '/res/lib/templates/simpleproblem.problem';
3818: if (&is_on_map($template)) {
3819: $incourse = 1;
3820: $forceview = 1;
3821: $cfile = $template;
3822: }
3823: } elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3824: $incourse = 1;
3825: if ($env{'form.forceedit'}) {
3826: $forceview = 1;
3827: } else {
3828: $forceedit = 1;
3829: }
3830: $cfile = $resurl;
3831: } elsif (($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3832: $incourse = 1;
3833: if ($env{'form.forceedit'}) {
3834: $forceview = 1;
3835: } else {
3836: $forceedit = 1;
3837: }
3838: $cfile = $resurl;
3839: } elsif (($resurl eq '/adm/extresedit') && ($symb || $env{'form.folderpath'})) {
3840: $incourse = 1;
3841: $forceview = 1;
3842: if ($symb) {
3843: my ($map,$id,$res)=&decode_symb($symb);
3844: $env{'request.symb'} = $symb;
3845: $cfile = &clutter($res);
3846: } else {
3847: $cfile = $env{'form.suppurl'};
3848: my $escfile = &unescape($cfile);
3849: if ($escfile =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3850: $cfile = '/adm/wrapper'.$escfile;
3851: } else {
3852: $escfile =~ s{^http://}{};
3853: $cfile = &escape("/adm/wrapper/ext/$escfile");
3854: }
3855: }
3856: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3857: if ($env{'form.forceedit'}) {
3858: $forceview = 1;
3859: } else {
3860: $forceedit = 1;
3861: }
3862: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3863: }
3864: }
3865: if ($uploaded || $incourse) {
3866: $home=&homeserver($cnum,$cdom);
3867: } elsif ($file !~ m{/$}) {
3868: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
3869: $file=~s{^($match_domain/$match_username)}{/priv/$1};
3870: # Check that the user has permission to edit this resource
3871: my $setpriv = 1;
3872: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
3873: if (defined($cfudom)) {
3874: $home=&homeserver($cfuname,$cfudom);
3875: $cfile=$file;
3876: }
3877: }
3878: if (($cfile ne '') && (!$incourse || $uploaded) &&
3879: (($home ne '') && ($home ne 'no_host'))) {
3880: my @ids=¤t_machine_ids();
3881: unless (grep(/^\Q$home\E$/,@ids)) {
3882: $switchserver=1;
3883: }
3884: }
3885: }
3886: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3887: }
3888:
3889: sub is_course_upload {
3890: my ($file,$cnum,$cdom) = @_;
3891: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
3892: $uploadpath =~ s{^\/}{};
3893: if (($file =~ m{^\Q$uploadpath\E/userfiles/(docs|supplemental)/}) ||
3894: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/})) {
3895: return 1;
3896: }
3897: return;
3898: }
3899:
3900: sub in_course {
3901: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
3902: if ($hideprivileged) {
3903: my $skipuser;
3904: my %coursehash = &coursedescription($cdom.'_'.$cnum);
3905: my @possdoms = ($cdom);
3906: if ($coursehash{'checkforpriv'}) {
3907: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
3908: }
3909: if (&privileged($uname,$udom,\@possdoms)) {
3910: $skipuser = 1;
3911: if ($coursehash{'nothideprivileged'}) {
3912: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3913: my $user;
3914: if ($item =~ /:/) {
3915: $user = $item;
3916: } else {
3917: $user = join(':',split(/[\@]/,$item));
3918: }
3919: if ($user eq $uname.':'.$udom) {
3920: undef($skipuser);
3921: last;
3922: }
3923: }
3924: }
3925: if ($skipuser) {
3926: return 0;
3927: }
3928: }
3929: }
3930: $type ||= 'any';
3931: if (!defined($cdom) || !defined($cnum)) {
3932: my $cid = $env{'request.course.id'};
3933: $cdom = $env{'course.'.$cid.'.domain'};
3934: $cnum = $env{'course.'.$cid.'.num'};
3935: }
3936: my $typesref;
3937: if (($type eq 'any') || ($type eq 'all')) {
3938: $typesref = ['active','previous','future'];
3939: } elsif ($type eq 'previous' || $type eq 'future') {
3940: $typesref = [$type];
3941: }
3942: my %roles = &get_my_roles($uname,$udom,'userroles',
3943: $typesref,undef,[$cdom]);
3944: my ($tmp) = keys(%roles);
3945: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
3946: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
3947: if (@course_roles > 0) {
3948: return 1;
3949: }
3950: return 0;
3951: }
3952:
3953: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
3954: # input: action, courseID, current domain, intended
3955: # path to file, source of file, instruction to parse file for objects,
3956: # ref to hash for embedded objects,
3957: # ref to hash for codebase of java objects.
3958: # reference to scalar to accommodate mime type determined
3959: # from File::MMagic if $parser = parse.
3960: #
3961: # output: url to file (if action was uploaddoc),
3962: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
3963: #
3964: # Allows directory structure to be used within lonUsers/../userfiles/ for a
3965: # course.
3966: #
3967: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3968: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
3969: # course's home server.
3970: #
3971: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
3972: # be copied from $source (current location) to
3973: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3974: # and will then be copied to
3975: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
3976: # course's home server.
3977: #
3978: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3979: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
3980: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3981: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
3982: # in course's home server.
3983: #
3984:
3985: sub process_coursefile {
3986: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
3987: $mimetype)=@_;
3988: my $fetchresult;
3989: my $home=&homeserver($docuname,$docudom);
3990: if ($action eq 'propagate') {
3991: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3992: $home);
3993: } else {
3994: my $fpath = '';
3995: my $fname = $file;
3996: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3997: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3998: my $filepath = &build_filepath($fpath);
3999: if ($action eq 'copy') {
4000: if ($source eq '') {
4001: $fetchresult = 'no source file';
4002: return $fetchresult;
4003: } else {
4004: my $destination = $filepath.'/'.$fname;
4005: rename($source,$destination);
4006: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
4007: $home);
4008: }
4009: } elsif ($action eq 'uploaddoc') {
4010: open(my $fh,'>',$filepath.'/'.$fname);
4011: print $fh $env{'form.'.$source};
4012: close($fh);
4013: if ($parser eq 'parse') {
4014: my $mm = new File::MMagic;
4015: my $type = $mm->checktype_filename($filepath.'/'.$fname);
4016: if ($type eq 'text/html') {
4017: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
4018: unless ($parse_result eq 'ok') {
4019: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
4020: }
4021: }
4022: if (ref($mimetype)) {
4023: $$mimetype = $type;
4024: }
4025: }
4026: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
4027: $home);
4028: if ($fetchresult eq 'ok') {
4029: return '/uploaded/'.$fpath.'/'.$fname;
4030: } else {
4031: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
4032: ' to host '.$home.': '.$fetchresult);
4033: return '/adm/notfound.html';
4034: }
4035: }
4036: }
4037: unless ( $fetchresult eq 'ok') {
4038: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
4039: ' to host '.$home.': '.$fetchresult);
4040: }
4041: return $fetchresult;
4042: }
4043:
4044: sub build_filepath {
4045: my ($fpath) = @_;
4046: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
4047: unless ($fpath eq '') {
4048: my @parts=split('/',$fpath);
4049: foreach my $part (@parts) {
4050: $filepath.= '/'.$part;
4051: if ((-e $filepath)!=1) {
4052: mkdir($filepath,0777);
4053: }
4054: }
4055: }
4056: return $filepath;
4057: }
4058:
4059: sub store_edited_file {
4060: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
4061: my $file = $primary_url;
4062: $file =~ s#^/uploaded/$docudom/$docuname/##;
4063: my $fpath = '';
4064: my $fname = $file;
4065: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
4066: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
4067: my $filepath = &build_filepath($fpath);
4068: open(my $fh,'>',$filepath.'/'.$fname);
4069: print $fh $content;
4070: close($fh);
4071: my $home=&homeserver($docuname,$docudom);
4072: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
4073: $home);
4074: if ($$fetchresult eq 'ok') {
4075: return '/uploaded/'.$fpath.'/'.$fname;
4076: } else {
4077: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
4078: ' to host '.$home.': '.$$fetchresult);
4079: return '/adm/notfound.html';
4080: }
4081: }
4082:
4083: sub clean_filename {
4084: my ($fname,$args)=@_;
4085: # Replace Windows backslashes by forward slashes
4086: $fname=~s/\\/\//g;
4087: if (!$args->{'keep_path'}) {
4088: # Get rid of everything but the actual filename
4089: $fname=~s/^.*\/([^\/]+)$/$1/;
4090: }
4091: # Replace spaces by underscores
4092: $fname=~s/\s+/\_/g;
4093: # Transliterate non-ascii text to ascii
4094: my $lang = &Apache::lonlocal::current_language();
4095: $fname = &LONCAPA::transliterate::fname_to_ascii($fname,$lang);
4096: # Replace all other weird characters by nothing
4097: $fname=~s{[^/\w\.\-]}{}g;
4098: # Replace all .\d. sequences with _\d. so they no longer look like version
4099: # numbers
4100: $fname=~s/\.(\d+)(?=\.)/_$1/g;
4101: # Replace three or more adjacent underscores with one for consistency
4102: # with loncfile::filename_check() so complete url can be extracted by
4103: # lonnet::decode_symb()
4104: $fname=~s/_{3,}/_/g;
4105: return $fname;
4106: }
4107:
4108: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
4109: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
4110: # image with the same aspect ratio as the original, but with dimensions which do
4111: # not exceed $resizewidth and $resizeheight.
4112:
4113: sub resizeImage {
4114: my ($img_path,$resizewidth,$resizeheight) = @_;
4115: my $ima = Image::Magick->new;
4116: my $resized;
4117: if (-e $img_path) {
4118: $ima->Read($img_path);
4119: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
4120: my $width = $ima->Get('width');
4121: my $height = $ima->Get('height');
4122: if ($width > $resizewidth) {
4123: my $factor = $width/$resizewidth;
4124: my $newheight = $height/$factor;
4125: $ima->Scale(width=>$resizewidth,height=>$newheight);
4126: $resized = 1;
4127: }
4128: }
4129: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
4130: my $width = $ima->Get('width');
4131: my $height = $ima->Get('height');
4132: if ($height > $resizeheight) {
4133: my $factor = $height/$resizeheight;
4134: my $newwidth = $width/$factor;
4135: $ima->Scale(width=>$newwidth,height=>$resizeheight);
4136: $resized = 1;
4137: }
4138: }
4139: if ($resized) {
4140: $ima->Write($img_path);
4141: }
4142: }
4143: return;
4144: }
4145:
4146: # --------------- Take an uploaded file and put it into the userfiles directory
4147: # input: $formname - the contents of the file are in $env{"form.$formname"}
4148: # the desired filename is in $env{"form.$formname.filename"}
4149: # $context - possible values: coursedoc, existingfile, overwrite,
4150: # canceloverwrite, scantron or ''.
4151: # if 'coursedoc': upload to the current course
4152: # if 'existingfile': write file to tmp/overwrites directory
4153: # if 'canceloverwrite': delete file written to tmp/overwrites directory
4154: # $context is passed as argument to &finishuserfileupload
4155: # $subdir - directory in userfile to store the file into
4156: # $parser - instruction to parse file for objects ($parser = parse) or
4157: # if context is 'scantron', $parser is hashref of csv column mapping
4158: # (e.g.,{ PaperID => 0, LastName => 1, FirstName => 2, ID => 3,
4159: # Section => 4, CODE => 5, FirstQuestion => 9 }).
4160: # $allfiles - reference to hash for embedded objects
4161: # $codebase - reference to hash for codebase of java objects
4162: # $desuname - username for permanent storage of uploaded file
4163: # $dsetudom - domain for permanaent storage of uploaded file
4164: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
4165: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
4166: # $resizewidth - width (pixels) to which to resize uploaded image
4167: # $resizeheight - height (pixels) to which to resize uploaded image
4168: # $mimetype - reference to scalar to accommodate mime type determined
4169: # from File::MMagic.
4170: #
4171: # output: url of file in userspace, or error: <message>
4172: # or /adm/notfound.html if failure to upload occurse
4173:
4174: sub userfileupload {
4175: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
4176: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
4177: if (!defined($subdir)) { $subdir='unknown'; }
4178: my $fname=$env{'form.'.$formname.'.filename'};
4179: $fname=&clean_filename($fname);
4180: # See if there is anything left
4181: unless ($fname) { return 'error: no uploaded file'; }
4182: # If filename now begins with a . prepend unix timestamp _ milliseconds
4183: if ($fname =~ /^\./) {
4184: my ($s,$usec) = &gettimeofday();
4185: while (length($usec) < 6) {
4186: $usec = '0'.$usec;
4187: }
4188: $fname = $s.'_'.substr($usec,0,3).$fname;
4189: }
4190: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
4191: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
4192: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
4193: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
4194: my $now = time;
4195: my $filepath;
4196: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
4197: $filepath = 'tmp/helprequests/'.$now;
4198: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
4199: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
4200: '_'.$env{'user.domain'}.'/pending';
4201: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
4202: my ($docuname,$docudom);
4203: if ($destudom =~ /^$match_domain$/) {
4204: $docudom = $destudom;
4205: } else {
4206: $docudom = $env{'user.domain'};
4207: }
4208: if ($destuname =~ /^$match_username$/) {
4209: $docuname = $destuname;
4210: } else {
4211: $docuname = $env{'user.name'};
4212: }
4213: if (exists($env{'form.group'})) {
4214: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4215: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4216: }
4217: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
4218: if ($context eq 'canceloverwrite') {
4219: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
4220: if (-e $tempfile) {
4221: my @info = stat($tempfile);
4222: if ($info[9] eq $env{'form.timestamp'}) {
4223: unlink($tempfile);
4224: }
4225: }
4226: return;
4227: }
4228: }
4229: # Create the directory if not present
4230: my @parts=split(/\//,$filepath);
4231: my $fullpath = $perlvar{'lonDaemons'};
4232: for (my $i=0;$i<@parts;$i++) {
4233: $fullpath .= '/'.$parts[$i];
4234: if ((-e $fullpath)!=1) {
4235: mkdir($fullpath,0777);
4236: }
4237: }
4238: open(my $fh,'>',$fullpath.'/'.$fname);
4239: print $fh $env{'form.'.$formname};
4240: close($fh);
4241: if ($context eq 'existingfile') {
4242: my @info = stat($fullpath.'/'.$fname);
4243: return ($fullpath.'/'.$fname,$info[9]);
4244: } else {
4245: return $fullpath.'/'.$fname;
4246: }
4247: }
4248: if ($subdir eq 'scantron') {
4249: $fname = 'scantron_orig_'.$fname;
4250: } else {
4251: $fname="$subdir/$fname";
4252: }
4253: if ($context eq 'coursedoc') {
4254: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4255: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4256: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
4257: return &finishuserfileupload($docuname,$docudom,
4258: $formname,$fname,$parser,$allfiles,
4259: $codebase,$thumbwidth,$thumbheight,
4260: $resizewidth,$resizeheight,$context,$mimetype);
4261: } else {
4262: if ($env{'form.folder'}) {
4263: $fname=$env{'form.folder'}.'/'.$fname;
4264: }
4265: return &process_coursefile('uploaddoc',$docuname,$docudom,
4266: $fname,$formname,$parser,
4267: $allfiles,$codebase,$mimetype);
4268: }
4269: } elsif (defined($destuname)) {
4270: my $docuname=$destuname;
4271: my $docudom=$destudom;
4272: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
4273: $parser,$allfiles,$codebase,
4274: $thumbwidth,$thumbheight,
4275: $resizewidth,$resizeheight,$context,$mimetype);
4276: } else {
4277: my $docuname=$env{'user.name'};
4278: my $docudom=$env{'user.domain'};
4279: if ((exists($env{'form.group'})) || ($context eq 'syllabus')) {
4280: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4281: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4282: }
4283: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
4284: $parser,$allfiles,$codebase,
4285: $thumbwidth,$thumbheight,
4286: $resizewidth,$resizeheight,$context,$mimetype);
4287: }
4288: }
4289:
4290: sub finishuserfileupload {
4291: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
4292: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
4293: my $path=$docudom.'/'.$docuname.'/';
4294: my $filepath=$perlvar{'lonDocRoot'};
4295:
4296: my ($fnamepath,$file,$fetchthumb);
4297: $file=$fname;
4298: if ($fname=~m|/|) {
4299: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
4300: $path.=$fnamepath.'/';
4301: }
4302: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
4303: my $count;
4304: for ($count=4;$count<=$#parts;$count++) {
4305: $filepath.="/$parts[$count]";
4306: if ((-e $filepath)!=1) {
4307: mkdir($filepath,0777);
4308: }
4309: }
4310:
4311: # Save the file
4312: {
4313: if (!open(FH,'>',$filepath.'/'.$file)) {
4314: &logthis('Failed to create '.$filepath.'/'.$file);
4315: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
4316: return '/adm/notfound.html';
4317: }
4318: if ($context eq 'overwrite') {
4319: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
4320: my $target = $filepath.'/'.$file;
4321: if (-e $source) {
4322: my @info = stat($source);
4323: if ($info[9] eq $env{'form.timestamp'}) {
4324: unless (&File::Copy::move($source,$target)) {
4325: &logthis('Failed to overwrite '.$filepath.'/'.$file);
4326: return "Moving from $source failed";
4327: }
4328: } else {
4329: return "Temporary file: $source had unexpected date/time for last modification";
4330: }
4331: } else {
4332: return "Temporary file: $source missing";
4333: }
4334: } elsif (!print FH ($env{'form.'.$formname})) {
4335: &logthis('Failed to write to '.$filepath.'/'.$file);
4336: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
4337: return '/adm/notfound.html';
4338: }
4339: close(FH);
4340: if ($resizewidth && $resizeheight) {
4341: my $mm = new File::MMagic;
4342: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
4343: if ($mime_type =~ m{^image/}) {
4344: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
4345: }
4346: }
4347: }
4348: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
4349: if (ref($mimetype)) {
4350: if ($$mimetype eq '') {
4351: my $mm = new File::MMagic;
4352: my $type = $mm->checktype_filename($filepath.'/'.$file);
4353: $$mimetype = $type;
4354: }
4355: }
4356: }
4357: if (($context ne 'scantron') && ($parser eq 'parse')) {
4358: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
4359: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
4360: $allfiles,$codebase);
4361: unless ($parse_result eq 'ok') {
4362: &logthis('Failed to parse '.$filepath.$file.
4363: ' for embedded media: '.$parse_result);
4364: }
4365: }
4366: } elsif (($context eq 'scantron') && (ref($parser) eq 'HASH')) {
4367: my $format = $env{'form.scantron_format'};
4368: &bubblesheet_converter($docudom,$filepath.'/'.$file,$parser,$format);
4369: }
4370: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
4371: my $input = $filepath.'/'.$file;
4372: my $output = $filepath.'/'.'tn-'.$file;
4373: my $thumbsize = $thumbwidth.'x'.$thumbheight;
4374: my @args = ('convert','-sample',$thumbsize,$input,$output);
4375: system({$args[0]} @args);
4376: if (-e $filepath.'/'.'tn-'.$file) {
4377: $fetchthumb = 1;
4378: }
4379: }
4380:
4381: # Notify homeserver to grep it
4382: #
4383: my $docuhome=&homeserver($docuname,$docudom);
4384: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
4385: if ($fetchresult eq 'ok') {
4386: if ($fetchthumb) {
4387: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
4388: if ($thumbresult ne 'ok') {
4389: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
4390: $docuhome.': '.$thumbresult);
4391: }
4392: }
4393: #
4394: # Return the URL to it
4395: return '/uploaded/'.$path.$file;
4396: } else {
4397: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
4398: ': '.$fetchresult);
4399: return '/adm/notfound.html';
4400: }
4401: }
4402:
4403: sub extract_embedded_items {
4404: my ($fullpath,$allfiles,$codebase,$content) = @_;
4405: my @state = ();
4406: my (%lastids,%related,%shockwave,%flashvars);
4407: my %javafiles = (
4408: codebase => '',
4409: code => '',
4410: archive => ''
4411: );
4412: my %mediafiles = (
4413: src => '',
4414: movie => '',
4415: );
4416: my $p;
4417: if ($content) {
4418: $p = HTML::LCParser->new($content);
4419: } else {
4420: $p = HTML::LCParser->new($fullpath);
4421: }
4422: while (my $t=$p->get_token()) {
4423: if ($t->[0] eq 'S') {
4424: my ($tagname, $attr) = ($t->[1],$t->[2]);
4425: push(@state, $tagname);
4426: if (lc($tagname) eq 'allow') {
4427: &add_filetype($allfiles,$attr->{'src'},'src');
4428: }
4429: if (lc($tagname) eq 'img') {
4430: &add_filetype($allfiles,$attr->{'src'},'src');
4431: }
4432: if (lc($tagname) eq 'a') {
4433: unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) {
4434: &add_filetype($allfiles,$attr->{'href'},'href');
4435: }
4436: }
4437: if (lc($tagname) eq 'script') {
4438: my $src;
4439: if ($attr->{'archive'} =~ /\.jar$/i) {
4440: &add_filetype($allfiles,$attr->{'archive'},'archive');
4441: } else {
4442: if ($attr->{'src'} ne '') {
4443: $src = $attr->{'src'};
4444: &add_filetype($allfiles,$src,'src');
4445: }
4446: }
4447: my $text = $p->get_trimmed_text();
4448: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
4449: my @swfargs = split(/,/,$1);
4450: foreach my $item (@swfargs) {
4451: $item =~ s/["']//g;
4452: $item =~ s/^\s+//;
4453: $item =~ s/\s+$//;
4454: }
4455: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
4456: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
4457: push(@{$related{$swfargs[0]}},$swfargs[2]);
4458: } else {
4459: $related{$swfargs[0]} = [$swfargs[2]];
4460: }
4461: }
4462: }
4463: }
4464: if (lc($tagname) eq 'link') {
4465: if (lc($attr->{'rel'}) eq 'stylesheet') {
4466: &add_filetype($allfiles,$attr->{'href'},'href');
4467: }
4468: }
4469: if (lc($tagname) eq 'object' ||
4470: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
4471: foreach my $item (keys(%javafiles)) {
4472: $javafiles{$item} = '';
4473: }
4474: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
4475: $lastids{lc($tagname)} = $attr->{'id'};
4476: }
4477: }
4478: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
4479: my $name = lc($attr->{'name'});
4480: foreach my $item (keys(%javafiles)) {
4481: if ($name eq $item) {
4482: $javafiles{$item} = $attr->{'value'};
4483: last;
4484: }
4485: }
4486: my $pathfrom;
4487: foreach my $item (keys(%mediafiles)) {
4488: if ($name eq $item) {
4489: $pathfrom = $attr->{'value'};
4490: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
4491: &add_filetype($allfiles,$pathfrom,$name);
4492: last;
4493: }
4494: }
4495: if ($name eq 'flashvars') {
4496: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
4497: }
4498: if ($pathfrom ne '') {
4499: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
4500: $pathfrom);
4501: }
4502: }
4503: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
4504: foreach my $item (keys(%javafiles)) {
4505: if ($attr->{$item}) {
4506: $javafiles{$item} = $attr->{$item};
4507: last;
4508: }
4509: }
4510: foreach my $item (keys(%mediafiles)) {
4511: if ($attr->{$item}) {
4512: &add_filetype($allfiles,$attr->{$item},$item);
4513: last;
4514: }
4515: }
4516: if (lc($tagname) eq 'embed') {
4517: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
4518: &embedded_dependency($allfiles,\%related,$attr->{'name'},
4519: $attr->{'src'});
4520: }
4521: }
4522: }
4523: if (lc($tagname) eq 'iframe') {
4524: my $src = $attr->{'src'} ;
4525: if (($src ne '') && ($src !~ m{^(/|https?://)})) {
4526: &add_filetype($allfiles,$src,'src');
4527: } elsif ($src =~ m{^/}) {
4528: if ($env{'request.course.id'}) {
4529: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4530: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4531: my $url = &hreflocation('',$fullpath);
4532: if ($url =~ m{^/uploaded/$cdom/$cnum/docs/(\w+/\d+)/}) {
4533: my $relpath = $1;
4534: if ($src =~ m{^/uploaded/$cdom/$cnum/docs/\Q$relpath\E/(.+)$}) {
4535: &add_filetype($allfiles,$1,'src');
4536: }
4537: }
4538: }
4539: }
4540: }
4541: if ($t->[4] =~ m{/>$}) {
4542: pop(@state);
4543: }
4544: } elsif ($t->[0] eq 'E') {
4545: my ($tagname) = ($t->[1]);
4546: if ($javafiles{'codebase'} ne '') {
4547: $javafiles{'codebase'} .= '/';
4548: }
4549: if (lc($tagname) eq 'applet' ||
4550: lc($tagname) eq 'object' ||
4551: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
4552: ) {
4553: foreach my $item (keys(%javafiles)) {
4554: if ($item ne 'codebase' && $javafiles{$item} ne '') {
4555: my $file=$javafiles{'codebase'}.$javafiles{$item};
4556: &add_filetype($allfiles,$file,$item);
4557: }
4558: }
4559: }
4560: pop @state;
4561: }
4562: }
4563: foreach my $id (sort(keys(%flashvars))) {
4564: if ($shockwave{$id} ne '') {
4565: my @pairs = split(/\&/,$flashvars{$id});
4566: foreach my $pair (@pairs) {
4567: my ($key,$value) = split(/\=/,$pair);
4568: if ($key eq 'thumb') {
4569: &add_filetype($allfiles,$value,$key);
4570: } elsif ($key eq 'content') {
4571: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
4572: my ($ext) = ($value =~ /\.([^.]+)$/);
4573: if ($ext ne '') {
4574: &add_filetype($allfiles,$path.$value,$ext);
4575: }
4576: }
4577: }
4578: }
4579: }
4580: return 'ok';
4581: }
4582:
4583: sub add_filetype {
4584: my ($allfiles,$file,$type)=@_;
4585: if (exists($allfiles->{$file})) {
4586: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
4587: push(@{$allfiles->{$file}}, &escape($type));
4588: }
4589: } else {
4590: @{$allfiles->{$file}} = (&escape($type));
4591: }
4592: }
4593:
4594: sub embedded_dependency {
4595: my ($allfiles,$related,$identifier,$pathfrom) = @_;
4596: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
4597: if (($identifier ne '') &&
4598: (ref($related->{$identifier}) eq 'ARRAY') &&
4599: ($pathfrom ne '')) {
4600: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
4601: foreach my $dep (@{$related->{$identifier}}) {
4602: &add_filetype($allfiles,$path.$dep,'object');
4603: }
4604: }
4605: }
4606: return;
4607: }
4608:
4609: sub bubblesheet_converter {
4610: my ($cdom,$fullpath,$config,$format) = @_;
4611: if ((&domain($cdom) ne '') &&
4612: ($fullpath =~ m{^\Q$perlvar{'lonDocRoot'}/userfiles/$cdom/\E$match_courseid/scantron_orig}) &&
4613: (-e $fullpath) && (ref($config) eq 'HASH') && ($format ne '')) {
4614: my (%csvcols,%csvoptions);
4615: if (ref($config->{'fields'}) eq 'HASH') {
4616: %csvcols = %{$config->{'fields'}};
4617: }
4618: if (ref($config->{'options'}) eq 'HASH') {
4619: %csvoptions = %{$config->{'options'}};
4620: }
4621: my %csvbynum = reverse(%csvcols);
4622: my %scantronconf = &get_scantron_config($format,$cdom);
4623: if (keys(%scantronconf)) {
4624: my %bynum = (
4625: $scantronconf{CODEstart} => 'CODEstart',
4626: $scantronconf{IDstart} => 'IDstart',
4627: $scantronconf{PaperID} => 'PaperID',
4628: $scantronconf{FirstName} => 'FirstName',
4629: $scantronconf{LastName} => 'LastName',
4630: $scantronconf{Qstart} => 'Qstart',
4631: );
4632: my @ordered;
4633: foreach my $item (sort { $a <=> $b } keys(%bynum)) {
4634: push(@ordered,$bynum{$item});
4635: }
4636: my %mapstart = (
4637: CODEstart => 'CODE',
4638: IDstart => 'ID',
4639: PaperID => 'PaperID',
4640: FirstName => 'FirstName',
4641: LastName => 'LastName',
4642: Qstart => 'FirstQuestion',
4643: );
4644: my %maplength = (
4645: CODEstart => 'CODElength',
4646: IDstart => 'IDlength',
4647: PaperID => 'PaperIDlength',
4648: FirstName => 'FirstNamelength',
4649: LastName => 'LastNamelength',
4650: );
4651: if (open(my $fh,'<',$fullpath)) {
4652: my $output;
4653: my %lettdig = &letter_to_digits();
4654: my %diglett = reverse(%lettdig);
4655: my $numletts = scalar(keys(%lettdig));
4656: my $num = 0;
4657: while (my $line=<$fh>) {
4658: $num ++;
4659: next if (($num == 1) && ($csvoptions{'hdr'} == 1));
4660: $line =~ s{[\r\n]+$}{};
4661: my %found;
4662: my @values = split(/,/,$line);
4663: my ($qstart,$record);
4664: for (my $i=0; $i<@values; $i++) {
4665: if ((($qstart ne '') && ($i > $qstart)) ||
4666: ($csvbynum{$i} eq 'FirstQuestion')) {
4667: if ($values[$i] eq '') {
4668: $values[$i] = $scantronconf{'Qoff'};
4669: } elsif ($scantronconf{'Qon'} eq 'number') {
4670: if ($values[$i] =~ /^[A-Ja-j]$/) {
4671: $values[$i] = $lettdig{uc($values[$i])};
4672: }
4673: } elsif ($scantronconf{'Qon'} eq 'letter') {
4674: if ($values[$i] =~ /^[0-9]$/) {
4675: $values[$i] = $diglett{$values[$i]};
4676: }
4677: } else {
4678: if ($values[$i] =~ /^[0-9A-Ja-j]$/) {
4679: my $digit;
4680: if ($values[$i] =~ /^[A-Ja-j]$/) {
4681: $digit = $lettdig{uc($values[$i])}-1;
4682: if ($values[$i] eq 'J') {
4683: $digit += $numletts;
4684: }
4685: } elsif ($values[$i] =~ /^[0-9]$/) {
4686: $digit = $values[$i]-1;
4687: if ($values[$i] eq '0') {
4688: $digit += $numletts;
4689: }
4690: }
4691: my $qval='';
4692: for (my $j=0; $j<$scantronconf{'Qlength'}; $j++) {
4693: if ($j == $digit) {
4694: $qval .= $scantronconf{'Qon'};
4695: } else {
4696: $qval .= $scantronconf{'Qoff'};
4697: }
4698: }
4699: $values[$i] = $qval;
4700: }
4701: }
4702: if (length($values[$i]) > $scantronconf{'Qlength'}) {
4703: $values[$i] = substr($values[$i],0,$scantronconf{'Qlength'});
4704: }
4705: my $numblank = $scantronconf{'Qlength'} - length($values[$i]);
4706: if ($numblank > 0) {
4707: $values[$i] .= ($scantronconf{'Qoff'} x $numblank);
4708: }
4709: if ($csvbynum{$i} eq 'FirstQuestion') {
4710: $qstart = $i;
4711: $found{$csvbynum{$i}} = $values[$i];
4712: } else {
4713: $found{'FirstQuestion'} .= $values[$i];
4714: }
4715: } elsif (exists($csvbynum{$i})) {
4716: if ($csvoptions{'rem'}) {
4717: $values[$i] =~ s/^\s+//;
4718: }
4719: if (($csvbynum{$i} eq 'PaperID') && ($csvoptions{'pad'})) {
4720: while (length($values[$i]) < $scantronconf{$maplength{$csvbynum{$i}}}) {
4721: $values[$i] = '0'.$values[$i];
4722: }
4723: }
4724: $found{$csvbynum{$i}} = $values[$i];
4725: }
4726: }
4727: foreach my $item (@ordered) {
4728: my $currlength = 1+length($record);
4729: my $numspaces = $scantronconf{$item} - $currlength;
4730: if ($numspaces > 0) {
4731: $record .= (' ' x $numspaces);
4732: }
4733: if (($mapstart{$item} ne '') && (exists($found{$mapstart{$item}}))) {
4734: unless ($item eq 'Qstart') {
4735: if (length($found{$mapstart{$item}}) > $scantronconf{$maplength{$item}}) {
4736: $found{$mapstart{$item}} = substr($found{$mapstart{$item}},0,$scantronconf{$maplength{$item}});
4737: }
4738: }
4739: $record .= $found{$mapstart{$item}};
4740: }
4741: }
4742: $output .= "$record\n";
4743: }
4744: close($fh);
4745: if ($output) {
4746: if (open(my $fh,'>',$fullpath)) {
4747: print $fh $output;
4748: close($fh);
4749: }
4750: }
4751: }
4752: }
4753: return;
4754: }
4755: }
4756:
4757: sub letter_to_digits {
4758: my %lettdig = (
4759: A => 1,
4760: B => 2,
4761: C => 3,
4762: D => 4,
4763: E => 5,
4764: F => 6,
4765: G => 7,
4766: H => 8,
4767: I => 9,
4768: J => 0,
4769: );
4770: return %lettdig;
4771: }
4772:
4773: sub get_scantron_config {
4774: my ($which,$cdom) = @_;
4775: my @lines = &get_scantronformat_file($cdom);
4776: my %config;
4777: #FIXME probably should move to XML it has already gotten a bit much now
4778: foreach my $line (@lines) {
4779: my ($name,$descrip)=split(/:/,$line);
4780: if ($name ne $which ) { next; }
4781: chomp($line);
4782: my @config=split(/:/,$line);
4783: $config{'name'}=$config[0];
4784: $config{'description'}=$config[1];
4785: $config{'CODElocation'}=$config[2];
4786: $config{'CODEstart'}=$config[3];
4787: $config{'CODElength'}=$config[4];
4788: $config{'IDstart'}=$config[5];
4789: $config{'IDlength'}=$config[6];
4790: $config{'Qstart'}=$config[7];
4791: $config{'Qlength'}=$config[8];
4792: $config{'Qoff'}=$config[9];
4793: $config{'Qon'}=$config[10];
4794: $config{'PaperID'}=$config[11];
4795: $config{'PaperIDlength'}=$config[12];
4796: $config{'FirstName'}=$config[13];
4797: $config{'FirstNamelength'}=$config[14];
4798: $config{'LastName'}=$config[15];
4799: $config{'LastNamelength'}=$config[16];
4800: $config{'BubblesPerRow'}=$config[17];
4801: last;
4802: }
4803: return %config;
4804: }
4805:
4806: sub get_scantronformat_file {
4807: my ($cdom) = @_;
4808: if ($cdom eq '') {
4809: $cdom= $env{'course.'.$env{'request.course.id'}.'.domain'};
4810: }
4811: my %domconfig = &get_dom('configuration',['scantron'],$cdom);
4812: my $gottab = 0;
4813: my @lines;
4814: if (ref($domconfig{'scantron'}) eq 'HASH') {
4815: if ($domconfig{'scantron'}{'scantronformat'} ne '') {
4816: my $formatfile = &getfile($perlvar{'lonDocRoot'}.$domconfig{'scantron'}{'scantronformat'});
4817: if ($formatfile ne '-1') {
4818: @lines = split("\n",$formatfile,-1);
4819: $gottab = 1;
4820: }
4821: }
4822: }
4823: if (!$gottab) {
4824: my $confname = $cdom.'-domainconfig';
4825: my $default = $perlvar{'lonDocRoot'}.'/res/'.$cdom.'/'.$confname.'/default.tab';
4826: my $formatfile = &getfile($default);
4827: if ($formatfile ne '-1') {
4828: @lines = split("\n",$formatfile,-1);
4829: $gottab = 1;
4830: }
4831: }
4832: if (!$gottab) {
4833: my @domains = ¤t_machine_domains();
4834: if (grep(/^\Q$cdom\E$/,@domains)) {
4835: if (open(my $fh,'<',$perlvar{'lonTabDir'}.'/scantronformat.tab')) {
4836: @lines = <$fh>;
4837: close($fh);
4838: }
4839: } else {
4840: if (open(my $fh,'<',$perlvar{'lonTabDir'}.'/default_scantronformat.tab')) {
4841: @lines = <$fh>;
4842: close($fh);
4843: }
4844: }
4845: }
4846: return @lines;
4847: }
4848:
4849: sub removeuploadedurl {
4850: my ($url)=@_;
4851: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
4852: return &removeuserfile($uname,$udom,$fname);
4853: }
4854:
4855: sub removeuserfile {
4856: my ($docuname,$docudom,$fname)=@_;
4857: my $home=&homeserver($docuname,$docudom);
4858: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
4859: if ($result eq 'ok') {
4860: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
4861: my $metafile = $fname.'.meta';
4862: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
4863: my $url = "/uploaded/$docudom/$docuname/$fname";
4864: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
4865: my $sqlresult =
4866: &update_portfolio_table($docuname,$docudom,$file,
4867: 'portfolio_metadata',$group,
4868: 'delete');
4869: }
4870: }
4871: return $result;
4872: }
4873:
4874: sub mkdiruserfile {
4875: my ($docuname,$docudom,$dir)=@_;
4876: my $home=&homeserver($docuname,$docudom);
4877: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
4878: }
4879:
4880: sub renameuserfile {
4881: my ($docuname,$docudom,$old,$new)=@_;
4882: my $home=&homeserver($docuname,$docudom);
4883: my $result = &reply("renameuserfile:$docudom:$docuname:".
4884: &escape("$old").':'.&escape("$new"),$home);
4885: if ($result eq 'ok') {
4886: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
4887: my $oldmeta = $old.'.meta';
4888: my $newmeta = $new.'.meta';
4889: my $metaresult =
4890: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
4891: my $url = "/uploaded/$docudom/$docuname/$old";
4892: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
4893: my $sqlresult =
4894: &update_portfolio_table($docuname,$docudom,$file,
4895: 'portfolio_metadata',$group,
4896: 'delete');
4897: }
4898: }
4899: return $result;
4900: }
4901:
4902: # ------------------------------------------------------------------------- Log
4903:
4904: sub log {
4905: my ($dom,$nam,$hom,$what)=@_;
4906: return critical("log:$dom:$nam:$what",$hom);
4907: }
4908:
4909: # ------------------------------------------------------------------ Course Log
4910: #
4911: # This routine flushes several buffers of non-mission-critical nature
4912: #
4913:
4914: sub flushcourselogs {
4915: &logthis('Flushing log buffers');
4916: #
4917: # course logs
4918: # This is a log of all transactions in a course, which can be used
4919: # for data mining purposes
4920: #
4921: # It also collects the courseid database, which lists last transaction
4922: # times and course titles for all courseids
4923: #
4924: my %courseidbuffer=();
4925: foreach my $crsid (keys(%courselogs)) {
4926: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
4927: &escape($courselogs{$crsid}),
4928: $coursehombuf{$crsid}) eq 'ok') {
4929: delete $courselogs{$crsid};
4930: } else {
4931: &logthis('Failed to flush log buffer for '.$crsid);
4932: if (length($courselogs{$crsid})>40000) {
4933: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
4934: " exceeded maximum size, deleting.</font>");
4935: delete $courselogs{$crsid};
4936: }
4937: }
4938: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
4939: 'description' => $coursedescrbuf{$crsid},
4940: 'inst_code' => $courseinstcodebuf{$crsid},
4941: 'type' => $coursetypebuf{$crsid},
4942: 'owner' => $courseownerbuf{$crsid},
4943: };
4944: }
4945: #
4946: # Write course id database (reverse lookup) to homeserver of courses
4947: # Is used in pickcourse
4948: #
4949: foreach my $crs_home (keys(%courseidbuffer)) {
4950: my $response = &courseidput(&host_domain($crs_home),
4951: $courseidbuffer{$crs_home},
4952: $crs_home,'timeonly');
4953: }
4954: #
4955: # File accesses
4956: # Writes to the dynamic metadata of resources to get hit counts, etc.
4957: #
4958: foreach my $entry (keys(%accesshash)) {
4959: if ($entry =~ /___count$/) {
4960: my ($dom,$name);
4961: ($dom,$name,undef)=
4962: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
4963: if (! defined($dom) || $dom eq '' ||
4964: ! defined($name) || $name eq '') {
4965: my $cid = $env{'request.course.id'};
4966: $dom = $env{'request.'.$cid.'.domain'};
4967: $name = $env{'request.'.$cid.'.num'};
4968: }
4969: my $value = $accesshash{$entry};
4970: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
4971: my %temphash=($url => $value);
4972: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
4973: if ($result eq 'ok') {
4974: delete $accesshash{$entry};
4975: }
4976: } else {
4977: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
4978: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
4979: my %temphash=($entry => $accesshash{$entry});
4980: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
4981: delete $accesshash{$entry};
4982: }
4983: }
4984: }
4985: #
4986: # Roles
4987: # Reverse lookup of user roles for course faculty/staff and co-authorship
4988: #
4989: foreach my $entry (keys(%userrolehash)) {
4990: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
4991: split(/\:/,$entry);
4992: if (&Apache::lonnet::put('nohist_userroles',
4993: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
4994: $rudom,$runame) eq 'ok') {
4995: delete $userrolehash{$entry};
4996: }
4997: }
4998: #
4999: # Reverse lookup of domain roles (dc, ad, li, sc, dh, da, au)
5000: #
5001: my %domrolebuffer = ();
5002: foreach my $entry (keys(%domainrolehash)) {
5003: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
5004: if ($domrolebuffer{$rudom}) {
5005: $domrolebuffer{$rudom}.='&'.&escape($entry).
5006: '='.&escape($domainrolehash{$entry});
5007: } else {
5008: $domrolebuffer{$rudom}.=&escape($entry).
5009: '='.&escape($domainrolehash{$entry});
5010: }
5011: delete $domainrolehash{$entry};
5012: }
5013: foreach my $dom (keys(%domrolebuffer)) {
5014: my %servers;
5015: if (defined(&domain($dom,'primary'))) {
5016: my $primary=&domain($dom,'primary');
5017: my $hostname=&hostname($primary);
5018: $servers{$primary} = $hostname;
5019: } else {
5020: %servers = &get_servers($dom,'library');
5021: }
5022: foreach my $tryserver (keys(%servers)) {
5023: if (&reply('domroleput:'.$dom.':'.
5024: $domrolebuffer{$dom},$tryserver) eq 'ok') {
5025: last;
5026: } else {
5027: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
5028: }
5029: }
5030: }
5031: $dumpcount++;
5032: }
5033:
5034: sub courselog {
5035: my $what=shift;
5036: $what=time.':'.$what;
5037: unless ($env{'request.course.id'}) { return ''; }
5038: $coursedombuf{$env{'request.course.id'}}=
5039: $env{'course.'.$env{'request.course.id'}.'.domain'};
5040: $coursenumbuf{$env{'request.course.id'}}=
5041: $env{'course.'.$env{'request.course.id'}.'.num'};
5042: $coursehombuf{$env{'request.course.id'}}=
5043: $env{'course.'.$env{'request.course.id'}.'.home'};
5044: $coursedescrbuf{$env{'request.course.id'}}=
5045: $env{'course.'.$env{'request.course.id'}.'.description'};
5046: $courseinstcodebuf{$env{'request.course.id'}}=
5047: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
5048: $courseownerbuf{$env{'request.course.id'}}=
5049: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
5050: $coursetypebuf{$env{'request.course.id'}}=
5051: $env{'course.'.$env{'request.course.id'}.'.type'};
5052: if (defined $courselogs{$env{'request.course.id'}}) {
5053: $courselogs{$env{'request.course.id'}}.='&'.$what;
5054: } else {
5055: $courselogs{$env{'request.course.id'}}.=$what;
5056: }
5057: if (length($courselogs{$env{'request.course.id'}})>4048) {
5058: &flushcourselogs();
5059: }
5060: }
5061:
5062: sub courseacclog {
5063: my $fnsymb=shift;
5064: unless ($env{'request.course.id'}) { return ''; }
5065: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
5066: if ($fnsymb=~/$LONCAPA::assess_re/) {
5067: $what.=':POST';
5068: # FIXME: Probably ought to escape things....
5069: foreach my $key (keys(%env)) {
5070: if ($key=~/^form\.(.*)/) {
5071: my $formitem = $1;
5072: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
5073: $what.=':'.$formitem.'='.$env{$key};
5074: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
5075: if ($formitem eq 'proctorpassword') {
5076: $what.=':'.$formitem.'=' . '*' x length($env{$key});
5077: } else {
5078: $what.=':'.$formitem.'='.$env{$key};
5079: }
5080: }
5081: }
5082: }
5083: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
5084: # FIXME: We should not be depending on a form parameter that someone
5085: # editing lonsearchcat.pm might change in the future.
5086: if ($env{'form.phase'} eq 'course_search') {
5087: $what.= ':POST';
5088: # FIXME: Probably ought to escape things....
5089: foreach my $element ('courseexp','crsfulltext','crsrelated',
5090: 'crsdiscuss') {
5091: $what.=':'.$element.'='.$env{'form.'.$element};
5092: }
5093: }
5094: }
5095: &courselog($what);
5096: }
5097:
5098: sub countacc {
5099: my $url=&declutter(shift);
5100: return if (! defined($url) || $url eq '');
5101: unless ($env{'request.course.id'}) { return ''; }
5102: #
5103: # Mark that this url was used in this course
5104: #
5105: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
5106: #
5107: # Increase the access count for this resource in this child process
5108: #
5109: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
5110: $accesshash{$key}++;
5111: }
5112:
5113: sub linklog {
5114: my ($from,$to)=@_;
5115: $from=&declutter($from);
5116: $to=&declutter($to);
5117: $accesshash{$from.'___'.$to.'___comefrom'}=1;
5118: $accesshash{$to.'___'.$from.'___goto'}=1;
5119: }
5120:
5121: sub statslog {
5122: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
5123: if ($users<2) { return; }
5124: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
5125: 'course' => $env{'request.course.id'},
5126: 'sections' => '"all"',
5127: 'num_students' => $users,
5128: 'part' => $part,
5129: 'symb' => $symb,
5130: 'mean_tries' => $av_attempts,
5131: 'deg_of_diff' => $degdiff});
5132: foreach my $key (keys(%dynstore)) {
5133: $accesshash{$key}=$dynstore{$key};
5134: }
5135: }
5136:
5137: sub userrolelog {
5138: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
5139: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
5140: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
5141: $userrolehash
5142: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
5143: =$tend.':'.$tstart;
5144: }
5145: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
5146: $userrolehash
5147: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
5148: =$tend.':'.$tstart;
5149: }
5150: if ($trole =~ /^(dc|ad|li|au|dg|sc|dh|da)/ ) {
5151: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
5152: $domainrolehash
5153: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
5154: = $tend.':'.$tstart;
5155: }
5156: }
5157:
5158: sub courserolelog {
5159: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
5160: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
5161: my $cdom = $1;
5162: my $cnum = $2;
5163: my $sec = $3;
5164: my $namespace = 'rolelog';
5165: my %storehash = (
5166: role => $trole,
5167: start => $tstart,
5168: end => $tend,
5169: selfenroll => $selfenroll,
5170: context => $context,
5171: );
5172: if ($trole eq 'gr') {
5173: $namespace = 'groupslog';
5174: $storehash{'group'} = $sec;
5175: } else {
5176: $storehash{'section'} = $sec;
5177: }
5178: &write_log('course',$namespace,\%storehash,$delflag,$username,
5179: $domain,$cnum,$cdom);
5180: if (($trole ne 'st') || ($sec ne '')) {
5181: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
5182: }
5183: }
5184: return;
5185: }
5186:
5187: sub domainrolelog {
5188: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
5189: if ($area =~ m{^/($match_domain)/$}) {
5190: my $cdom = $1;
5191: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
5192: my $namespace = 'rolelog';
5193: my %storehash = (
5194: role => $trole,
5195: start => $tstart,
5196: end => $tend,
5197: context => $context,
5198: );
5199: &write_log('domain',$namespace,\%storehash,$delflag,$username,
5200: $domain,$domconfiguser,$cdom);
5201: }
5202: return;
5203:
5204: }
5205:
5206: sub coauthorrolelog {
5207: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
5208: if ($area =~ m{^/($match_domain)/($match_username)$}) {
5209: my $audom = $1;
5210: my $auname = $2;
5211: my $namespace = 'rolelog';
5212: my %storehash = (
5213: role => $trole,
5214: start => $tstart,
5215: end => $tend,
5216: context => $context,
5217: );
5218: &write_log('author',$namespace,\%storehash,$delflag,$username,
5219: $domain,$auname,$audom);
5220: }
5221: return;
5222: }
5223:
5224: sub get_course_adv_roles {
5225: my ($cid,$codes) = @_;
5226: $cid=$env{'request.course.id'} unless (defined($cid));
5227: my %coursehash=&coursedescription($cid);
5228: my $crstype = &Apache::loncommon::course_type($cid);
5229: my %nothide=();
5230: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
5231: if ($user !~ /:/) {
5232: $nothide{join(':',split(/[\@]/,$user))}=1;
5233: } else {
5234: $nothide{$user}=1;
5235: }
5236: }
5237: my @possdoms = ($coursehash{'domain'});
5238: if ($coursehash{'checkforpriv'}) {
5239: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
5240: }
5241: my %returnhash=();
5242: my %dumphash=
5243: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
5244: my $now=time;
5245: my %privileged;
5246: foreach my $entry (keys(%dumphash)) {
5247: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
5248: if (($tstart) && ($tstart<0)) { next; }
5249: if (($tend) && ($tend<$now)) { next; }
5250: if (($tstart) && ($now<$tstart)) { next; }
5251: my ($role,$username,$domain,$section)=split(/\:/,$entry);
5252: if ($username eq '' || $domain eq '') { next; }
5253: if ((&privileged($username,$domain,\@possdoms)) &&
5254: (!$nothide{$username.':'.$domain})) { next; }
5255: if ($role eq 'cr') { next; }
5256: if ($codes) {
5257: if ($section) { $role .= ':'.$section; }
5258: if ($returnhash{$role}) {
5259: $returnhash{$role}.=','.$username.':'.$domain;
5260: } else {
5261: $returnhash{$role}=$username.':'.$domain;
5262: }
5263: } else {
5264: my $key=&plaintext($role,$crstype);
5265: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
5266: if ($returnhash{$key}) {
5267: $returnhash{$key}.=','.$username.':'.$domain;
5268: } else {
5269: $returnhash{$key}=$username.':'.$domain;
5270: }
5271: }
5272: }
5273: return %returnhash;
5274: }
5275:
5276: sub get_my_roles {
5277: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
5278: unless (defined($uname)) { $uname=$env{'user.name'}; }
5279: unless (defined($udom)) { $udom=$env{'user.domain'}; }
5280: my (%dumphash,%nothide);
5281: if ($context eq 'userroles') {
5282: %dumphash = &dump('roles',$udom,$uname);
5283: } else {
5284: %dumphash = &dump('nohist_userroles',$udom,$uname);
5285: if ($hidepriv) {
5286: my %coursehash=&coursedescription($udom.'_'.$uname);
5287: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
5288: if ($user !~ /:/) {
5289: $nothide{join(':',split(/[\@]/,$user))} = 1;
5290: } else {
5291: $nothide{$user} = 1;
5292: }
5293: }
5294: }
5295: }
5296: my %returnhash=();
5297: my $now=time;
5298: my %privileged;
5299: foreach my $entry (keys(%dumphash)) {
5300: my ($role,$tend,$tstart);
5301: if ($context eq 'userroles') {
5302: next if ($entry =~ /^rolesdef/);
5303: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
5304: } else {
5305: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
5306: }
5307: if (($tstart) && ($tstart<0)) { next; }
5308: my $status = 'active';
5309: if (($tend) && ($tend<=$now)) {
5310: $status = 'previous';
5311: }
5312: if (($tstart) && ($now<$tstart)) {
5313: $status = 'future';
5314: }
5315: if (ref($types) eq 'ARRAY') {
5316: if (!grep(/^\Q$status\E$/,@{$types})) {
5317: next;
5318: }
5319: } else {
5320: if ($status ne 'active') {
5321: next;
5322: }
5323: }
5324: my ($rolecode,$username,$domain,$section,$area);
5325: if ($context eq 'userroles') {
5326: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
5327: (undef,$domain,$username,$section) = split(/\//,$area);
5328: } else {
5329: ($role,$username,$domain,$section) = split(/\:/,$entry);
5330: }
5331: if (ref($roledoms) eq 'ARRAY') {
5332: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
5333: next;
5334: }
5335: }
5336: if (ref($roles) eq 'ARRAY') {
5337: if (!grep(/^\Q$role\E$/,@{$roles})) {
5338: if ($role =~ /^cr\//) {
5339: if (!grep(/^cr$/,@{$roles})) {
5340: next;
5341: }
5342: } elsif ($role =~ /^gr\//) {
5343: if (!grep(/^gr$/,@{$roles})) {
5344: next;
5345: }
5346: } else {
5347: next;
5348: }
5349: }
5350: }
5351: if ($hidepriv) {
5352: my @privroles = ('dc','su');
5353: if ($context eq 'userroles') {
5354: next if (grep(/^\Q$role\E$/,@privroles));
5355: } else {
5356: my $possdoms = [$domain];
5357: if (ref($roledoms) eq 'ARRAY') {
5358: push(@{$possdoms},@{$roledoms});
5359: }
5360: if (&privileged($username,$domain,$possdoms,\@privroles)) {
5361: if (!$nothide{$username.':'.$domain}) {
5362: next;
5363: }
5364: }
5365: }
5366: }
5367: if ($withsec) {
5368: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
5369: $tstart.':'.$tend;
5370: } else {
5371: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
5372: }
5373: }
5374: return %returnhash;
5375: }
5376:
5377: sub get_all_adhocroles {
5378: my ($dom) = @_;
5379: my @roles_by_num = ();
5380: my %domdefaults = &get_domain_defaults($dom);
5381: my (%description,%access_in_dom,%access_info);
5382: if (ref($domdefaults{'adhocroles'}) eq 'HASH') {
5383: my $count = 0;
5384: my %domcurrent = %{$domdefaults{'adhocroles'}};
5385: my %ordered;
5386: foreach my $role (sort(keys(%domcurrent))) {
5387: my ($order,$desc,$access_in_dom);
5388: if (ref($domcurrent{$role}) eq 'HASH') {
5389: $order = $domcurrent{$role}{'order'};
5390: $desc = $domcurrent{$role}{'desc'};
5391: $access_in_dom{$role} = $domcurrent{$role}{'access'};
5392: $access_info{$role} = $domcurrent{$role}{$access_in_dom{$role}};
5393: }
5394: if ($order eq '') {
5395: $order = $count;
5396: }
5397: $ordered{$order} = $role;
5398: if ($desc ne '') {
5399: $description{$role} = $desc;
5400: } else {
5401: $description{$role}= $role;
5402: }
5403: $count++;
5404: }
5405: foreach my $item (sort {$a <=> $b } (keys(%ordered))) {
5406: push(@roles_by_num,$ordered{$item});
5407: }
5408: }
5409: return (\@roles_by_num,\%description,\%access_in_dom,\%access_info);
5410: }
5411:
5412: sub get_my_adhocroles {
5413: my ($cid,$checkreg) = @_;
5414: my ($cdom,$cnum,%info,@possroles,$description,$roles_by_num);
5415: if ($env{'request.course.id'} eq $cid) {
5416: $cdom = $env{'course.'.$cid.'.domain'};
5417: $cnum = $env{'course.'.$cid.'.num'};
5418: $info{'internal.coursecode'} = $env{'course.'.$cid.'.internal.coursecode'};
5419: } elsif ($cid =~ /^($match_domain)_($match_courseid)$/) {
5420: $cdom = $1;
5421: $cnum = $2;
5422: %info = &Apache::lonnet::get('environment',['internal.coursecode'],
5423: $cdom,$cnum);
5424: }
5425: if (($info{'internal.coursecode'} ne '') && ($checkreg)) {
5426: my $user = $env{'user.name'}.':'.$env{'user.domain'};
5427: my %rosterhash = &get('classlist',[$user],$cdom,$cnum);
5428: if ($rosterhash{$user} ne '') {
5429: my $type = (split(/:/,$rosterhash{$user}))[5];
5430: return ([],{}) if ($type eq 'auto');
5431: }
5432: }
5433: if (($cdom ne '') && ($cnum ne '')) {
5434: if (($env{"user.role.dh./$cdom/"}) || ($env{"user.role.da./$cdom/"})) {
5435: my $then=$env{'user.login.time'};
5436: my $update=$env{'user.update.time'};
5437: if (!$update) {
5438: $update = $then;
5439: }
5440: my @liveroles;
5441: foreach my $role ('dh','da') {
5442: if ($env{"user.role.$role./$cdom/"}) {
5443: my ($tstart,$tend)=split(/\./,$env{"user.role.$role./$cdom/"});
5444: my $limit = $update;
5445: if ($env{'request.role'} eq "$role./$cdom/") {
5446: $limit = $then;
5447: }
5448: my $activerole = 1;
5449: if ($tstart && $tstart>$limit) { $activerole = 0; }
5450: if ($tend && $tend <$limit) { $activerole = 0; }
5451: if ($activerole) {
5452: push(@liveroles,$role);
5453: }
5454: }
5455: }
5456: if (@liveroles) {
5457: if (&homeserver($cnum,$cdom) ne 'no_host') {
5458: my ($accessref,$accessinfo,%access_in_dom);
5459: ($roles_by_num,$description,$accessref,$accessinfo) = &get_all_adhocroles($cdom);
5460: if (ref($roles_by_num) eq 'ARRAY') {
5461: if (@{$roles_by_num}) {
5462: my %settings;
5463: if ($env{'request.course.id'} eq $cid) {
5464: foreach my $envkey (keys(%env)) {
5465: if ($envkey =~ /^\Qcourse.$cid.\E(internal\.adhoc.+)$/) {
5466: $settings{$1} = $env{$envkey};
5467: }
5468: }
5469: } else {
5470: %settings = &dump('environment',$cdom,$cnum,'internal\.adhoc');
5471: }
5472: my %setincrs;
5473: if ($settings{'internal.adhocaccess'}) {
5474: map { $setincrs{$_} = 1; } split(/,/,$settings{'internal.adhocaccess'});
5475: }
5476: my @statuses;
5477: if ($env{'environment.inststatus'}) {
5478: @statuses = split(/,/,$env{'environment.inststatus'});
5479: }
5480: my $user = $env{'user.name'}.':'.$env{'user.domain'};
5481: if (ref($accessref) eq 'HASH') {
5482: %access_in_dom = %{$accessref};
5483: }
5484: foreach my $role (@{$roles_by_num}) {
5485: my ($curraccess,@okstatus,@personnel);
5486: if ($setincrs{$role}) {
5487: ($curraccess,my $rest) = split(/=/,$settings{'internal.adhoc.'.$role});
5488: if ($curraccess eq 'status') {
5489: @okstatus = split(/\&/,$rest);
5490: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5491: @personnel = split(/\&/,$rest);
5492: }
5493: } else {
5494: $curraccess = $access_in_dom{$role};
5495: if (ref($accessinfo) eq 'HASH') {
5496: if ($curraccess eq 'status') {
5497: if (ref($accessinfo->{$role}) eq 'ARRAY') {
5498: @okstatus = @{$accessinfo->{$role}};
5499: }
5500: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5501: if (ref($accessinfo->{$role}) eq 'ARRAY') {
5502: @personnel = @{$accessinfo->{$role}};
5503: }
5504: }
5505: }
5506: }
5507: if ($curraccess eq 'none') {
5508: next;
5509: } elsif ($curraccess eq 'all') {
5510: push(@possroles,$role);
5511: } elsif ($curraccess eq 'dh') {
5512: if (grep(/^dh$/,@liveroles)) {
5513: push(@possroles,$role);
5514: } else {
5515: next;
5516: }
5517: } elsif ($curraccess eq 'da') {
5518: if (grep(/^da$/,@liveroles)) {
5519: push(@possroles,$role);
5520: } else {
5521: next;
5522: }
5523: } elsif ($curraccess eq 'status') {
5524: if (@okstatus) {
5525: if (!@statuses) {
5526: if (grep(/^default$/,@okstatus)) {
5527: push(@possroles,$role);
5528: }
5529: } else {
5530: foreach my $status (@okstatus) {
5531: if (grep(/^\Q$status\E$/,@statuses)) {
5532: push(@possroles,$role);
5533: last;
5534: }
5535: }
5536: }
5537: }
5538: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5539: if (grep(/^\Q$user\E$/,@personnel)) {
5540: if ($curraccess eq 'exc') {
5541: push(@possroles,$role);
5542: }
5543: } elsif ($curraccess eq 'inc') {
5544: push(@possroles,$role);
5545: }
5546: }
5547: }
5548: }
5549: }
5550: }
5551: }
5552: }
5553: }
5554: unless (ref($description) eq 'HASH') {
5555: if (ref($roles_by_num) eq 'ARRAY') {
5556: my %desc;
5557: map { $desc{$_} = $_; } (@{$roles_by_num});
5558: $description = \%desc;
5559: } else {
5560: $description = {};
5561: }
5562: }
5563: return (\@possroles,$description);
5564: }
5565:
5566: # ----------------------------------------------------- Frontpage Announcements
5567: #
5568: #
5569:
5570: sub postannounce {
5571: my ($server,$text)=@_;
5572: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
5573: unless ($text=~/\w/) { $text=''; }
5574: return &reply('setannounce:'.&escape($text),$server);
5575: }
5576:
5577: sub getannounce {
5578:
5579: if (open(my $fh,"<",$perlvar{'lonDocRoot'}.'/announcement.txt')) {
5580: my $announcement='';
5581: while (my $line = <$fh>) { $announcement .= $line; }
5582: close($fh);
5583: if ($announcement=~/\w/) {
5584: return
5585: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
5586: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
5587: } else {
5588: return '';
5589: }
5590: } else {
5591: return '';
5592: }
5593: }
5594:
5595: # ---------------------------------------------------------- Course ID routines
5596: # Deal with domain's nohist_courseid.db files
5597: #
5598:
5599: sub courseidput {
5600: my ($domain,$storehash,$coursehome,$caller) = @_;
5601: return unless (ref($storehash) eq 'HASH');
5602: my $outcome;
5603: if ($caller eq 'timeonly') {
5604: my $cids = '';
5605: foreach my $item (keys(%$storehash)) {
5606: $cids.=&escape($item).'&';
5607: }
5608: $cids=~s/\&$//;
5609: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
5610: $coursehome);
5611: } else {
5612: my $items = '';
5613: foreach my $item (keys(%$storehash)) {
5614: $items.= &escape($item).'='.
5615: &freeze_escape($$storehash{$item}).'&';
5616: }
5617: $items=~s/\&$//;
5618: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
5619: $coursehome);
5620: }
5621: if ($outcome eq 'unknown_cmd') {
5622: my $what;
5623: foreach my $cid (keys(%$storehash)) {
5624: $what .= &escape($cid).'=';
5625: foreach my $item ('description','inst_code','owner','type') {
5626: $what .= &escape($storehash->{$cid}{$item}).':';
5627: }
5628: $what =~ s/\:$/&/;
5629: }
5630: $what =~ s/\&$//;
5631: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
5632: } else {
5633: return $outcome;
5634: }
5635: }
5636:
5637: sub courseiddump {
5638: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
5639: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
5640: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
5641: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner,
5642: $hasuniquecode,$reqcrsdom,$reqinstcode)=@_;
5643: my $as_hash = 1;
5644: my %returnhash;
5645: if (!$domfilter) { $domfilter=''; }
5646: my %libserv = &all_library();
5647: foreach my $tryserver (keys(%libserv)) {
5648: if ( ( $hostidflag == 1
5649: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
5650: || (!defined($hostidflag)) ) {
5651:
5652: if (($domfilter eq '') ||
5653: (&host_domain($tryserver) eq $domfilter)) {
5654: my $rep;
5655: if (grep { $_ eq $tryserver } current_machine_ids()) {
5656: $rep = LONCAPA::Lond::dump_course_id_handler(
5657: join(":", (&host_domain($tryserver), $sincefilter,
5658: &escape($descfilter), &escape($instcodefilter),
5659: &escape($ownerfilter), &escape($coursefilter),
5660: &escape($typefilter), &escape($regexp_ok),
5661: $as_hash, &escape($selfenrollonly),
5662: &escape($catfilter), $showhidden, $caller,
5663: &escape($cloner), &escape($cc_clone), $cloneonly,
5664: &escape($createdbefore), &escape($createdafter),
5665: &escape($creationcontext),$domcloner,$hasuniquecode,
5666: $reqcrsdom,&escape($reqinstcode))));
5667: } else {
5668: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
5669: $sincefilter.':'.&escape($descfilter).':'.
5670: &escape($instcodefilter).':'.&escape($ownerfilter).
5671: ':'.&escape($coursefilter).':'.&escape($typefilter).
5672: ':'.&escape($regexp_ok).':'.$as_hash.':'.
5673: &escape($selfenrollonly).':'.&escape($catfilter).':'.
5674: $showhidden.':'.$caller.':'.&escape($cloner).':'.
5675: &escape($cc_clone).':'.$cloneonly.':'.
5676: &escape($createdbefore).':'.&escape($createdafter).':'.
5677: &escape($creationcontext).':'.$domcloner.':'.$hasuniquecode.
5678: ':'.$reqcrsdom.':'.&escape($reqinstcode),$tryserver);
5679: }
5680:
5681: my @pairs=split(/\&/,$rep);
5682: foreach my $item (@pairs) {
5683: my ($key,$value)=split(/\=/,$item,2);
5684: $key = &unescape($key);
5685: next if ($key =~ /^error: 2 /);
5686: my $result = &thaw_unescape($value);
5687: if (ref($result) eq 'HASH') {
5688: $returnhash{$key}=$result;
5689: } else {
5690: my @responses = split(/:/,$value);
5691: my @items = ('description','inst_code','owner','type');
5692: for (my $i=0; $i<@responses; $i++) {
5693: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
5694: }
5695: }
5696: }
5697: }
5698: }
5699: }
5700: return %returnhash;
5701: }
5702:
5703: sub courselastaccess {
5704: my ($cdom,$cnum,$hostidref) = @_;
5705: my %returnhash;
5706: if ($cdom && $cnum) {
5707: my $chome = &homeserver($cnum,$cdom);
5708: if ($chome ne 'no_host') {
5709: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
5710: &extract_lastaccess(\%returnhash,$rep);
5711: }
5712: } else {
5713: if (!$cdom) { $cdom=''; }
5714: my %libserv = &all_library();
5715: foreach my $tryserver (keys(%libserv)) {
5716: if (ref($hostidref) eq 'ARRAY') {
5717: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
5718: }
5719: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
5720: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
5721: &extract_lastaccess(\%returnhash,$rep);
5722: }
5723: }
5724: }
5725: return %returnhash;
5726: }
5727:
5728: sub extract_lastaccess {
5729: my ($returnhash,$rep) = @_;
5730: if (ref($returnhash) eq 'HASH') {
5731: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
5732: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
5733: $rep eq '') {
5734: my @pairs=split(/\&/,$rep);
5735: foreach my $item (@pairs) {
5736: my ($key,$value)=split(/\=/,$item,2);
5737: $key = &unescape($key);
5738: next if ($key =~ /^error: 2 /);
5739: $returnhash->{$key} = &thaw_unescape($value);
5740: }
5741: }
5742: }
5743: return;
5744: }
5745:
5746: # ---------------------------------------------------------- DC e-mail
5747:
5748: sub dcmailput {
5749: my ($domain,$msgid,$message,$server)=@_;
5750: my $status = &Apache::lonnet::critical(
5751: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
5752: &escape($message),$server);
5753: return $status;
5754: }
5755:
5756: sub dcmaildump {
5757: my ($dom,$startdate,$enddate,$senders) = @_;
5758: my %returnhash=();
5759:
5760: if (defined(&domain($dom,'primary'))) {
5761: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
5762: &escape($enddate).':';
5763: my @esc_senders=map { &escape($_)} @$senders;
5764: $cmd.=&escape(join('&',@esc_senders));
5765: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
5766: my ($key,$value) = split(/\=/,$line,2);
5767: if (($key) && ($value)) {
5768: $returnhash{&unescape($key)} = &unescape($value);
5769: }
5770: }
5771: }
5772: return %returnhash;
5773: }
5774: # ---------------------------------------------------------- Domain roles
5775:
5776: sub get_domain_roles {
5777: my ($dom,$roles,$startdate,$enddate)=@_;
5778: if ((!defined($startdate)) || ($startdate eq '')) {
5779: $startdate = '.';
5780: }
5781: if ((!defined($enddate)) || ($enddate eq '')) {
5782: $enddate = '.';
5783: }
5784: my $rolelist;
5785: if (ref($roles) eq 'ARRAY') {
5786: $rolelist = join('&',@{$roles});
5787: }
5788: my %personnel = ();
5789:
5790: my %servers = &get_servers($dom,'library');
5791: foreach my $tryserver (keys(%servers)) {
5792: %{$personnel{$tryserver}}=();
5793: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
5794: &escape($startdate).':'.
5795: &escape($enddate).':'.
5796: &escape($rolelist), $tryserver))) {
5797: my ($key,$value) = split(/\=/,$line,2);
5798: if (($key) && ($value)) {
5799: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
5800: }
5801: }
5802: }
5803: return %personnel;
5804: }
5805:
5806: sub get_active_domroles {
5807: my ($dom,$roles) = @_;
5808: return () unless (ref($roles) eq 'ARRAY');
5809: my $now = time;
5810: my %dompersonnel = &get_domain_roles($dom,$roles,$now,$now);
5811: my %domroles;
5812: foreach my $server (keys(%dompersonnel)) {
5813: foreach my $user (sort(keys(%{$dompersonnel{$server}}))) {
5814: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,$user);
5815: $domroles{$uname.':'.$udom} = $dompersonnel{$server}{$user};
5816: }
5817: }
5818: return %domroles;
5819: }
5820:
5821: # ----------------------------------------------------------- Interval timing
5822:
5823: {
5824: # Caches needed for speedup of navmaps
5825: # We don't want to cache this for very long at all (5 seconds at most)
5826: #
5827: # The user for whom we cache
5828: my $cachedkey='';
5829: # The cached times for this user
5830: my %cachedtimes=();
5831: # When this was last done
5832: my $cachedtime='';
5833:
5834: sub load_all_first_access {
5835: my ($uname,$udom,$ignorecache)=@_;
5836: if (($cachedkey eq $uname.':'.$udom) &&
5837: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'}) &&
5838: (!$ignorecache)) {
5839: return;
5840: }
5841: $cachedtime=time;
5842: $cachedkey=$uname.':'.$udom;
5843: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
5844: }
5845:
5846: sub get_first_access {
5847: my ($type,$argsymb,$argmap,$ignorecache)=@_;
5848: my ($symb,$courseid,$udom,$uname)=&whichuser();
5849: if ($argsymb) { $symb=$argsymb; }
5850: my ($map,$id,$res)=&decode_symb($symb);
5851: if ($argmap) { $map = $argmap; }
5852: if ($type eq 'course') {
5853: $res='course';
5854: } elsif ($type eq 'map') {
5855: $res=&symbread($map);
5856: } else {
5857: $res=$symb;
5858: }
5859: &load_all_first_access($uname,$udom,$ignorecache);
5860: return $cachedtimes{"$courseid\0$res"};
5861: }
5862:
5863: sub set_first_access {
5864: my ($type,$interval)=@_;
5865: my ($symb,$courseid,$udom,$uname)=&whichuser();
5866: my ($map,$id,$res)=&decode_symb($symb);
5867: if ($type eq 'course') {
5868: $res='course';
5869: } elsif ($type eq 'map') {
5870: $res=&symbread($map);
5871: } else {
5872: $res=$symb;
5873: }
5874: $cachedkey='';
5875: my $firstaccess=&get_first_access($type,$symb,$map);
5876: if ($firstaccess) {
5877: &logthis("First access time already set ($firstaccess) when attempting ".
5878: "to set new value (type: $type, extent: $res) for $uname:$udom ".
5879: "in $courseid");
5880: return 'already_set';
5881: } else {
5882: my $start = time;
5883: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
5884: $udom,$uname);
5885: if ($putres eq 'ok') {
5886: &put('timerinterval',{"$courseid\0$res"=>$interval},
5887: $udom,$uname);
5888: &appenv(
5889: {
5890: 'course.'.$courseid.'.firstaccess.'.$res => $start,
5891: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
5892: }
5893: );
5894: if (($cachedtime) && (abs($start-$cachedtime) < 5)) {
5895: $cachedtimes{"$courseid\0$res"} = $start;
5896: }
5897: } elsif ($putres ne 'refused') {
5898: &logthis("Result: $putres when attempting to set first access time ".
5899: "(type: $type, extent: $res) for $uname:$udom in $courseid");
5900: }
5901: return $putres;
5902: }
5903: return 'already_set';
5904: }
5905: }
5906:
5907: # --------------------------------------------- Set Expire Date for Spreadsheet
5908:
5909: sub expirespread {
5910: my ($uname,$udom,$stype,$usymb)=@_;
5911: my $cid=$env{'request.course.id'};
5912: if ($cid) {
5913: my $now=time;
5914: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
5915: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
5916: $env{'course.'.$cid.'.num'}.
5917: ':nohist_expirationdates:'.
5918: &escape($key).'='.$now,
5919: $env{'course.'.$cid.'.home'})
5920: }
5921: return 'ok';
5922: }
5923:
5924: # ----------------------------------------------------- Devalidate Spreadsheets
5925:
5926: sub devalidate {
5927: my ($symb,$uname,$udom)=@_;
5928: my $cid=$env{'request.course.id'};
5929: if ($cid) {
5930: # delete the stored spreadsheets for
5931: # - the student level sheet of this user in course's homespace
5932: # - the assessment level sheet for this resource
5933: # for this user in user's homespace
5934: # - current conditional state info
5935: my $key=$uname.':'.$udom.':';
5936: my $status=
5937: &del('nohist_calculatedsheets',
5938: [$key.'studentcalc:'],
5939: $env{'course.'.$cid.'.domain'},
5940: $env{'course.'.$cid.'.num'})
5941: .' '.
5942: &del('nohist_calculatedsheets_'.$cid,
5943: [$key.'assesscalc:'.$symb],$udom,$uname);
5944: unless ($status eq 'ok ok') {
5945: &logthis('Could not devalidate spreadsheet '.
5946: $uname.' at '.$udom.' for '.
5947: $symb.': '.$status);
5948: }
5949: &delenv('user.state.'.$cid);
5950: }
5951: }
5952:
5953: sub get_scalar {
5954: my ($string,$end) = @_;
5955: my $value;
5956: if ($$string =~ s/^([^&]*?)($end)/$2/) {
5957: $value = $1;
5958: } elsif ($$string =~ s/^([^&]*?)&//) {
5959: $value = $1;
5960: }
5961: return &unescape($value);
5962: }
5963:
5964: sub array2str {
5965: my (@array) = @_;
5966: my $result=&arrayref2str(\@array);
5967: $result=~s/^__ARRAY_REF__//;
5968: $result=~s/__END_ARRAY_REF__$//;
5969: return $result;
5970: }
5971:
5972: sub arrayref2str {
5973: my ($arrayref) = @_;
5974: my $result='__ARRAY_REF__';
5975: foreach my $elem (@$arrayref) {
5976: if(ref($elem) eq 'ARRAY') {
5977: $result.=&arrayref2str($elem).'&';
5978: } elsif(ref($elem) eq 'HASH') {
5979: $result.=&hashref2str($elem).'&';
5980: } elsif(ref($elem)) {
5981: #print("Got a ref of ".(ref($elem))." skipping.");
5982: } else {
5983: $result.=&escape($elem).'&';
5984: }
5985: }
5986: $result=~s/\&$//;
5987: $result .= '__END_ARRAY_REF__';
5988: return $result;
5989: }
5990:
5991: sub hash2str {
5992: my (%hash) = @_;
5993: my $result=&hashref2str(\%hash);
5994: $result=~s/^__HASH_REF__//;
5995: $result=~s/__END_HASH_REF__$//;
5996: return $result;
5997: }
5998:
5999: sub hashref2str {
6000: my ($hashref)=@_;
6001: my $result='__HASH_REF__';
6002: foreach my $key (sort(keys(%$hashref))) {
6003: if (ref($key) eq 'ARRAY') {
6004: $result.=&arrayref2str($key).'=';
6005: } elsif (ref($key) eq 'HASH') {
6006: $result.=&hashref2str($key).'=';
6007: } elsif (ref($key)) {
6008: $result.='=';
6009: #print("Got a ref of ".(ref($key))." skipping.");
6010: } else {
6011: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
6012: }
6013:
6014: if(ref($hashref->{$key}) eq 'ARRAY') {
6015: $result.=&arrayref2str($hashref->{$key}).'&';
6016: } elsif(ref($hashref->{$key}) eq 'HASH') {
6017: $result.=&hashref2str($hashref->{$key}).'&';
6018: } elsif(ref($hashref->{$key})) {
6019: $result.='&';
6020: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
6021: } else {
6022: $result.=&escape($hashref->{$key}).'&';
6023: }
6024: }
6025: $result=~s/\&$//;
6026: $result .= '__END_HASH_REF__';
6027: return $result;
6028: }
6029:
6030: sub str2hash {
6031: my ($string)=@_;
6032: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
6033: return %$hash;
6034: }
6035:
6036: sub str2hashref {
6037: my ($string) = @_;
6038:
6039: my %hash;
6040:
6041: if($string !~ /^__HASH_REF__/) {
6042: if (! ($string eq '' || !defined($string))) {
6043: $hash{'error'}='Not hash reference';
6044: }
6045: return (\%hash, $string);
6046: }
6047:
6048: $string =~ s/^__HASH_REF__//;
6049:
6050: while($string !~ /^__END_HASH_REF__/) {
6051: #key
6052: my $key='';
6053: if($string =~ /^__HASH_REF__/) {
6054: ($key, $string)=&str2hashref($string);
6055: if(defined($key->{'error'})) {
6056: $hash{'error'}='Bad data';
6057: return (\%hash, $string);
6058: }
6059: } elsif($string =~ /^__ARRAY_REF__/) {
6060: ($key, $string)=&str2arrayref($string);
6061: if($key->[0] eq 'Array reference error') {
6062: $hash{'error'}='Bad data';
6063: return (\%hash, $string);
6064: }
6065: } else {
6066: $string =~ s/^(.*?)=//;
6067: $key=&unescape($1);
6068: }
6069: $string =~ s/^=//;
6070:
6071: #value
6072: my $value='';
6073: if($string =~ /^__HASH_REF__/) {
6074: ($value, $string)=&str2hashref($string);
6075: if(defined($value->{'error'})) {
6076: $hash{'error'}='Bad data';
6077: return (\%hash, $string);
6078: }
6079: } elsif($string =~ /^__ARRAY_REF__/) {
6080: ($value, $string)=&str2arrayref($string);
6081: if($value->[0] eq 'Array reference error') {
6082: $hash{'error'}='Bad data';
6083: return (\%hash, $string);
6084: }
6085: } else {
6086: $value=&get_scalar(\$string,'__END_HASH_REF__');
6087: }
6088: $string =~ s/^&//;
6089:
6090: $hash{$key}=$value;
6091: }
6092:
6093: $string =~ s/^__END_HASH_REF__//;
6094:
6095: return (\%hash, $string);
6096: }
6097:
6098: sub str2array {
6099: my ($string)=@_;
6100: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
6101: return @$array;
6102: }
6103:
6104: sub str2arrayref {
6105: my ($string) = @_;
6106: my @array;
6107:
6108: if($string !~ /^__ARRAY_REF__/) {
6109: if (! ($string eq '' || !defined($string))) {
6110: $array[0]='Array reference error';
6111: }
6112: return (\@array, $string);
6113: }
6114:
6115: $string =~ s/^__ARRAY_REF__//;
6116:
6117: while($string !~ /^__END_ARRAY_REF__/) {
6118: my $value='';
6119: if($string =~ /^__HASH_REF__/) {
6120: ($value, $string)=&str2hashref($string);
6121: if(defined($value->{'error'})) {
6122: $array[0] ='Array reference error';
6123: return (\@array, $string);
6124: }
6125: } elsif($string =~ /^__ARRAY_REF__/) {
6126: ($value, $string)=&str2arrayref($string);
6127: if($value->[0] eq 'Array reference error') {
6128: $array[0] ='Array reference error';
6129: return (\@array, $string);
6130: }
6131: } else {
6132: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
6133: }
6134: $string =~ s/^&//;
6135:
6136: push(@array, $value);
6137: }
6138:
6139: $string =~ s/^__END_ARRAY_REF__//;
6140:
6141: return (\@array, $string);
6142: }
6143:
6144: # -------------------------------------------------------------------Temp Store
6145:
6146: sub tmpreset {
6147: my ($symb,$namespace,$domain,$stuname) = @_;
6148: if (!$symb) {
6149: $symb=&symbread();
6150: if (!$symb) { $symb= $env{'request.url'}; }
6151: }
6152: $symb=escape($symb);
6153:
6154: if (!$namespace) { $namespace=$env{'request.state'}; }
6155: $namespace=~s/\//\_/g;
6156: $namespace=~s/\W//g;
6157:
6158: if (!$domain) { $domain=$env{'user.domain'}; }
6159: if (!$stuname) { $stuname=$env{'user.name'}; }
6160: if ($domain eq 'public' && $stuname eq 'public') {
6161: $stuname=&get_requestor_ip();
6162: }
6163: my $path=LONCAPA::tempdir();
6164: my %hash;
6165: if (tie(%hash,'GDBM_File',
6166: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
6167: &GDBM_WRCREAT(),0640)) {
6168: foreach my $key (keys(%hash)) {
6169: if ($key=~ /:$symb/) {
6170: delete($hash{$key});
6171: }
6172: }
6173: }
6174: }
6175:
6176: sub tmpstore {
6177: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
6178:
6179: if (!$symb) {
6180: $symb=&symbread();
6181: if (!$symb) { $symb= $env{'request.url'}; }
6182: }
6183: $symb=escape($symb);
6184:
6185: if (!$namespace) {
6186: # I don't think we would ever want to store this for a course.
6187: # it seems this will only be used if we don't have a course.
6188: #$namespace=$env{'request.course.id'};
6189: #if (!$namespace) {
6190: $namespace=$env{'request.state'};
6191: #}
6192: }
6193: $namespace=~s/\//\_/g;
6194: $namespace=~s/\W//g;
6195: if (!$domain) { $domain=$env{'user.domain'}; }
6196: if (!$stuname) { $stuname=$env{'user.name'}; }
6197: if ($domain eq 'public' && $stuname eq 'public') {
6198: $stuname=&get_requestor_ip();
6199: }
6200: my $now=time;
6201: my %hash;
6202: my $path=LONCAPA::tempdir();
6203: if (tie(%hash,'GDBM_File',
6204: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
6205: &GDBM_WRCREAT(),0640)) {
6206: $hash{"version:$symb"}++;
6207: my $version=$hash{"version:$symb"};
6208: my $allkeys='';
6209: foreach my $key (keys(%$storehash)) {
6210: $allkeys.=$key.':';
6211: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
6212: }
6213: $hash{"$version:$symb:timestamp"}=$now;
6214: $allkeys.='timestamp';
6215: $hash{"$version:keys:$symb"}=$allkeys;
6216: if (untie(%hash)) {
6217: return 'ok';
6218: } else {
6219: return "error:$!";
6220: }
6221: } else {
6222: return "error:$!";
6223: }
6224: }
6225:
6226: # -----------------------------------------------------------------Temp Restore
6227:
6228: sub tmprestore {
6229: my ($symb,$namespace,$domain,$stuname) = @_;
6230:
6231: if (!$symb) {
6232: $symb=&symbread();
6233: if (!$symb) { $symb= $env{'request.url'}; }
6234: }
6235: $symb=escape($symb);
6236:
6237: if (!$namespace) { $namespace=$env{'request.state'}; }
6238:
6239: if (!$domain) { $domain=$env{'user.domain'}; }
6240: if (!$stuname) { $stuname=$env{'user.name'}; }
6241: if ($domain eq 'public' && $stuname eq 'public') {
6242: $stuname=&get_requestor_ip();
6243: }
6244: my %returnhash;
6245: $namespace=~s/\//\_/g;
6246: $namespace=~s/\W//g;
6247: my %hash;
6248: my $path=LONCAPA::tempdir();
6249: if (tie(%hash,'GDBM_File',
6250: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
6251: &GDBM_READER(),0640)) {
6252: my $version=$hash{"version:$symb"};
6253: $returnhash{'version'}=$version;
6254: my $scope;
6255: for ($scope=1;$scope<=$version;$scope++) {
6256: my $vkeys=$hash{"$scope:keys:$symb"};
6257: my @keys=split(/:/,$vkeys);
6258: my $key;
6259: $returnhash{"$scope:keys"}=$vkeys;
6260: foreach $key (@keys) {
6261: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
6262: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
6263: }
6264: }
6265: if (!(untie(%hash))) {
6266: return "error:$!";
6267: }
6268: } else {
6269: return "error:$!";
6270: }
6271: return %returnhash;
6272: }
6273:
6274: # ----------------------------------------------------------------------- Store
6275:
6276: sub store {
6277: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
6278: my $home='';
6279:
6280: if ($stuname) { $home=&homeserver($stuname,$domain); }
6281:
6282: $symb=&symbclean($symb);
6283: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
6284:
6285: if (!$domain) { $domain=$env{'user.domain'}; }
6286: if (!$stuname) { $stuname=$env{'user.name'}; }
6287:
6288: &devalidate($symb,$stuname,$domain);
6289:
6290: $symb=escape($symb);
6291: if (!$namespace) {
6292: unless ($namespace=$env{'request.course.id'}) {
6293: return '';
6294: }
6295: }
6296: if (!$home) { $home=$env{'user.home'}; }
6297:
6298: $$storehash{'ip'}=&get_requestor_ip();
6299: $$storehash{'host'}=$perlvar{'lonHostID'};
6300:
6301: my $namevalue='';
6302: foreach my $key (keys(%$storehash)) {
6303: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6304: }
6305: $namevalue=~s/\&$//;
6306: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
6307: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
6308: }
6309:
6310: # -------------------------------------------------------------- Critical Store
6311:
6312: sub cstore {
6313: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
6314: my $home='';
6315:
6316: if ($stuname) { $home=&homeserver($stuname,$domain); }
6317:
6318: $symb=&symbclean($symb);
6319: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
6320:
6321: if (!$domain) { $domain=$env{'user.domain'}; }
6322: if (!$stuname) { $stuname=$env{'user.name'}; }
6323:
6324: &devalidate($symb,$stuname,$domain);
6325:
6326: $symb=escape($symb);
6327: if (!$namespace) {
6328: unless ($namespace=$env{'request.course.id'}) {
6329: return '';
6330: }
6331: }
6332: if (!$home) { $home=$env{'user.home'}; }
6333:
6334: $$storehash{'ip'}=&get_requestor_ip();
6335: $$storehash{'host'}=$perlvar{'lonHostID'};
6336:
6337: my $namevalue='';
6338: foreach my $key (keys(%$storehash)) {
6339: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6340: }
6341: $namevalue=~s/\&$//;
6342: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
6343: return critical
6344: ("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
6345: }
6346:
6347: # --------------------------------------------------------------------- Restore
6348:
6349: sub restore {
6350: my ($symb,$namespace,$domain,$stuname) = @_;
6351: my $home='';
6352:
6353: if ($stuname) { $home=&homeserver($stuname,$domain); }
6354:
6355: if (!$symb) {
6356: return if ($namespace eq 'courserequests');
6357: unless ($symb=escape(&symbread())) { return ''; }
6358: } else {
6359: unless ($namespace eq 'courserequests') {
6360: $symb=&escape(&symbclean($symb));
6361: }
6362: }
6363: if (!$namespace) {
6364: unless ($namespace=$env{'request.course.id'}) {
6365: return '';
6366: }
6367: }
6368: if (!$domain) { $domain=$env{'user.domain'}; }
6369: if (!$stuname) { $stuname=$env{'user.name'}; }
6370: if (!$home) { $home=$env{'user.home'}; }
6371: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
6372:
6373: my %returnhash=();
6374: foreach my $line (split(/\&/,$answer)) {
6375: my ($name,$value)=split(/\=/,$line);
6376: $returnhash{&unescape($name)}=&thaw_unescape($value);
6377: }
6378: my $version;
6379: for ($version=1;$version<=$returnhash{'version'};$version++) {
6380: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
6381: $returnhash{$item}=$returnhash{$version.':'.$item};
6382: }
6383: }
6384: return %returnhash;
6385: }
6386:
6387: # ---------------------------------------------------------- Course Description
6388: #
6389: #
6390:
6391: sub coursedescription {
6392: my ($courseid,$args)=@_;
6393: $courseid=~s/^\///;
6394: $courseid=~s/\_/\//g;
6395: my ($cdomain,$cnum)=split(/\//,$courseid);
6396: my $chome=&homeserver($cnum,$cdomain);
6397: my $normalid=$cdomain.'_'.$cnum;
6398: # need to always cache even if we get errors otherwise we keep
6399: # trying and trying and trying to get the course description.
6400: my %envhash=();
6401: my %returnhash=();
6402:
6403: my $expiretime=600;
6404: if ($env{'request.course.id'} eq $normalid) {
6405: $expiretime=120;
6406: }
6407:
6408: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
6409: if (!$args->{'freshen_cache'}
6410: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
6411: foreach my $key (keys(%env)) {
6412: next if ($key !~ /^\Q$prefix\E(.*)/);
6413: my ($setting) = $1;
6414: $returnhash{$setting} = $env{$key};
6415: }
6416: return %returnhash;
6417: }
6418:
6419: # get the data again
6420:
6421: if (!$args->{'one_time'}) {
6422: $envhash{'course.'.$normalid.'.last_cache'}=time;
6423: }
6424:
6425: if ($chome ne 'no_host') {
6426: %returnhash=&dump('environment',$cdomain,$cnum);
6427: if (!exists($returnhash{'con_lost'})) {
6428: my $username = $env{'user.name'}; # Defult username
6429: if(defined $args->{'user'}) {
6430: $username = $args->{'user'};
6431: }
6432: $returnhash{'home'}= $chome;
6433: $returnhash{'domain'} = $cdomain;
6434: $returnhash{'num'} = $cnum;
6435: if (!defined($returnhash{'type'})) {
6436: $returnhash{'type'} = 'Course';
6437: }
6438: while (my ($name,$value) = each %returnhash) {
6439: $envhash{'course.'.$normalid.'.'.$name}=$value;
6440: }
6441: $returnhash{'url'}=&clutter($returnhash{'url'});
6442: $returnhash{'fn'}=LONCAPA::tempdir() .
6443: $username.'_'.$cdomain.'_'.$cnum;
6444: $envhash{'course.'.$normalid.'.home'}=$chome;
6445: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
6446: $envhash{'course.'.$normalid.'.num'}=$cnum;
6447: }
6448: }
6449: if (!$args->{'one_time'}) {
6450: &appenv(\%envhash);
6451: }
6452: return %returnhash;
6453: }
6454:
6455: sub update_released_required {
6456: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
6457: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
6458: $cid = $env{'request.course.id'};
6459: $cdom = $env{'course.'.$cid.'.domain'};
6460: $cnum = $env{'course.'.$cid.'.num'};
6461: $chome = $env{'course.'.$cid.'.home'};
6462: }
6463: if ($needsrelease) {
6464: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
6465: my $needsupdate;
6466: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
6467: $needsupdate = 1;
6468: } else {
6469: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
6470: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
6471: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
6472: $needsupdate = 1;
6473: }
6474: }
6475: if ($needsupdate) {
6476: my %needshash = (
6477: 'internal.releaserequired' => $needsrelease,
6478: );
6479: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
6480: if ($putresult eq 'ok') {
6481: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
6482: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
6483: if (ref($crsinfo{$cid}) eq 'HASH') {
6484: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
6485: &courseidput($cdom,\%crsinfo,$chome,'notime');
6486: }
6487: }
6488: }
6489: }
6490: return;
6491: }
6492:
6493: # -------------------------------------------------See if a user is privileged
6494:
6495: sub privileged {
6496: my ($username,$domain,$possdomains,$possroles)=@_;
6497: my $now = time;
6498: my $roles;
6499: if (ref($possroles) eq 'ARRAY') {
6500: $roles = $possroles;
6501: } else {
6502: $roles = ['dc','su'];
6503: }
6504: if (ref($possdomains) eq 'ARRAY') {
6505: my %privileged = &privileged_by_domain($possdomains,$roles);
6506: foreach my $dom (@{$possdomains}) {
6507: if (($username =~ /^$match_username$/) && ($domain =~ /^$match_domain$/) &&
6508: (ref($privileged{$dom}) eq 'HASH')) {
6509: foreach my $role (@{$roles}) {
6510: if (ref($privileged{$dom}{$role}) eq 'HASH') {
6511: if (exists($privileged{$dom}{$role}{$username.':'.$domain})) {
6512: my ($end,$start) = split(/:/,$privileged{$dom}{$role}{$username.':'.$domain});
6513: return 1 unless (($end && $end < $now) ||
6514: ($start && $start > $now));
6515: }
6516: }
6517: }
6518: }
6519: }
6520: } else {
6521: my %rolesdump = &dump("roles", $domain, $username) or return 0;
6522: my $now = time;
6523:
6524: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys(%rolesdump)}) {
6525: my ($trole, $tend, $tstart) = split(/_/, $role);
6526: if (grep(/^\Q$trole\E$/,@{$roles})) {
6527: return 1 unless ($tend && $tend < $now)
6528: or ($tstart && $tstart > $now);
6529: }
6530: }
6531: }
6532: return 0;
6533: }
6534:
6535: sub privileged_by_domain {
6536: my ($domains,$roles) = @_;
6537: my %privileged = ();
6538: my $cachetime = 60*60*24;
6539: my $now = time;
6540: unless ((ref($domains) eq 'ARRAY') && (ref($roles) eq 'ARRAY')) {
6541: return %privileged;
6542: }
6543: foreach my $dom (@{$domains}) {
6544: next if (ref($privileged{$dom}) eq 'HASH');
6545: my $needroles;
6546: foreach my $role (@{$roles}) {
6547: my ($result,$cached)=&is_cached_new('priv_'.$role,$dom);
6548: if (defined($cached)) {
6549: if (ref($result) eq 'HASH') {
6550: $privileged{$dom}{$role} = $result;
6551: }
6552: } else {
6553: $needroles = 1;
6554: }
6555: }
6556: if ($needroles) {
6557: my %dompersonnel = &get_domain_roles($dom,$roles);
6558: $privileged{$dom} = {};
6559: foreach my $server (keys(%dompersonnel)) {
6560: if (ref($dompersonnel{$server}) eq 'HASH') {
6561: foreach my $item (keys(%{$dompersonnel{$server}})) {
6562: my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
6563: my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
6564: next if ($end && $end < $now);
6565: $privileged{$dom}{$trole}{$uname.':'.$udom} =
6566: $dompersonnel{$server}{$item};
6567: }
6568: }
6569: }
6570: if (ref($privileged{$dom}) eq 'HASH') {
6571: foreach my $role (@{$roles}) {
6572: if (ref($privileged{$dom}{$role}) eq 'HASH') {
6573: &do_cache_new('priv_'.$role,$dom,$privileged{$dom}{$role},$cachetime);
6574: } else {
6575: my %hash = ();
6576: &do_cache_new('priv_'.$role,$dom,\%hash,$cachetime);
6577: }
6578: }
6579: }
6580: }
6581: }
6582: return %privileged;
6583: }
6584:
6585: # -------------------------------------------------------- Get user privileges
6586:
6587: sub rolesinit {
6588: my ($domain, $username) = @_;
6589: my %userroles = ('user.login.time' => time);
6590: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
6591:
6592: # firstaccess and timerinterval are related to timed maps/resources.
6593: # also, blocking can be triggered by an activating timer
6594: # it's saved in the user's %env.
6595: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
6596: my %timerinterval = &dump('timerinterval', $domain, $username);
6597: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
6598: %timerintchk, %timerintenv);
6599:
6600: foreach my $key (keys(%firstaccess)) {
6601: my ($cid, $rest) = split(/\0/, $key);
6602: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
6603: }
6604:
6605: foreach my $key (keys(%timerinterval)) {
6606: my ($cid,$rest) = split(/\0/,$key);
6607: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
6608: }
6609:
6610: my %allroles=();
6611: my %allgroups=();
6612:
6613: for my $area (grep { ! /^rolesdef_/ } keys(%rolesdump)) {
6614: my $role = $rolesdump{$area};
6615: $area =~ s/\_\w\w$//;
6616:
6617: my ($trole, $tend, $tstart, $group_privs);
6618:
6619: if ($role =~ /^cr/) {
6620: # Custom role, defined by a user
6621: # e.g., user.role.cr/msu/smith/mynewrole
6622: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
6623: $trole = $1;
6624: ($tend, $tstart) = split('_', $2);
6625: } else {
6626: $trole = $role;
6627: }
6628: } elsif ($role =~ m|^gr/|) {
6629: # Role of member in a group, defined within a course/community
6630: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
6631: ($trole, $tend, $tstart) = split(/_/, $role);
6632: next if $tstart eq '-1';
6633: ($trole, $group_privs) = split(/\//, $trole);
6634: $group_privs = &unescape($group_privs);
6635: } else {
6636: # Just a normal role, defined in roles.tab
6637: ($trole, $tend, $tstart) = split(/_/,$role);
6638: }
6639:
6640: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
6641: $username);
6642: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
6643:
6644: # role expired or not available yet?
6645: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
6646: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
6647:
6648: next if $area eq '' or $trole eq '';
6649:
6650: my $spec = "$trole.$area";
6651: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
6652:
6653: if ($trole =~ /^cr\//) {
6654: # Custom role, defined by a user
6655: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
6656: } elsif ($trole eq 'gr') {
6657: # Role of a member in a group, defined within a course/community
6658: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
6659: next;
6660: } else {
6661: # Normal role, defined in roles.tab
6662: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
6663: }
6664:
6665: my $cid = $tdomain.'_'.$trest;
6666: unless ($firstaccchk{$cid}) {
6667: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
6668: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
6669: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
6670: $coursetimerstarts{$cid}{$item};
6671: }
6672: }
6673: $firstaccchk{$cid} = 1;
6674: }
6675: unless ($timerintchk{$cid}) {
6676: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
6677: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
6678: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
6679: $coursetimerintervals{$cid}{$item};
6680: }
6681: }
6682: $timerintchk{$cid} = 1;
6683: }
6684: }
6685:
6686: @userroles{'user.author','user.adv','user.rar'} = &set_userprivs(\%userroles,
6687: \%allroles, \%allgroups);
6688: $env{'user.adv'} = $userroles{'user.adv'};
6689: $env{'user.rar'} = $userroles{'user.rar'};
6690:
6691: return (\%userroles,\%firstaccenv,\%timerintenv);
6692: }
6693:
6694: sub set_arearole {
6695: my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
6696: unless ($nolog) {
6697: # log the associated role with the area
6698: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
6699: }
6700: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
6701: }
6702:
6703: sub custom_roleprivs {
6704: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
6705: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
6706: my $homsvr = &homeserver($rauthor,$rdomain);
6707: if (&hostname($homsvr) ne '') {
6708: my ($rdummy,$roledef)=
6709: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
6710: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
6711: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
6712: if (defined($syspriv)) {
6713: if ($trest =~ /^$match_community$/) {
6714: $syspriv =~ s/bre\&S//;
6715: }
6716: $$allroles{'cm./'}.=':'.$syspriv;
6717: $$allroles{$spec.'./'}.=':'.$syspriv;
6718: }
6719: if ($tdomain ne '') {
6720: if (defined($dompriv)) {
6721: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
6722: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
6723: }
6724: if (($trest ne '') && (defined($coursepriv))) {
6725: if ($trole =~ m{^cr/$tdomain/$tdomain\Q-domainconfig\E/([^/]+)$}) {
6726: my $rolename = $1;
6727: $coursepriv = &course_adhocrole_privs($rolename,$tdomain,$trest,$coursepriv);
6728: }
6729: $$allroles{'cm.'.$area}.=':'.$coursepriv;
6730: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
6731: }
6732: }
6733: }
6734: }
6735: }
6736:
6737: sub course_adhocrole_privs {
6738: my ($rolename,$cdom,$cnum,$coursepriv) = @_;
6739: my %overrides = &get('environment',["internal.adhocpriv.$rolename"],$cdom,$cnum);
6740: if ($overrides{"internal.adhocpriv.$rolename"}) {
6741: my (%currprivs,%storeprivs);
6742: foreach my $item (split(/:/,$coursepriv)) {
6743: my ($priv,$restrict) = split(/\&/,$item);
6744: $currprivs{$priv} = $restrict;
6745: }
6746: my (%possadd,%possremove,%full);
6747: foreach my $item (split(/\:/,$Apache::lonnet::pr{'cr:c'})) {
6748: my ($priv,$restrict)=split(/\&/,$item);
6749: $full{$priv} = $restrict;
6750: }
6751: foreach my $item (split(/,/,$overrides{"internal.adhocpriv.$rolename"})) {
6752: next if ($item eq '');
6753: my ($rule,$rest) = split(/=/,$item);
6754: next unless (($rule eq 'off') || ($rule eq 'on'));
6755: foreach my $priv (split(/:/,$rest)) {
6756: if ($priv ne '') {
6757: if ($rule eq 'off') {
6758: $possremove{$priv} = 1;
6759: } else {
6760: $possadd{$priv} = 1;
6761: }
6762: }
6763: }
6764: }
6765: foreach my $priv (sort(keys(%full))) {
6766: if (exists($currprivs{$priv})) {
6767: unless (exists($possremove{$priv})) {
6768: $storeprivs{$priv} = $currprivs{$priv};
6769: }
6770: } elsif (exists($possadd{$priv})) {
6771: $storeprivs{$priv} = $full{$priv};
6772: }
6773: }
6774: $coursepriv = ':'.join(':',map { $_.'&'.$storeprivs{$_}; } sort(keys(%storeprivs)));
6775: }
6776: return $coursepriv;
6777: }
6778:
6779: sub group_roleprivs {
6780: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
6781: my $access = 1;
6782: my $now = time;
6783: if (($tend!=0) && ($tend<$now)) { $access = 0; }
6784: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
6785: if ($access) {
6786: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
6787: $$allgroups{$course}{$group} .=':'.$group_privs;
6788: }
6789: }
6790:
6791: sub standard_roleprivs {
6792: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
6793: if (defined($pr{$trole.':s'})) {
6794: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
6795: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
6796: }
6797: if ($tdomain ne '') {
6798: if (defined($pr{$trole.':d'})) {
6799: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
6800: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
6801: }
6802: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
6803: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
6804: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
6805: }
6806: }
6807: }
6808:
6809: sub set_userprivs {
6810: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
6811: my $author=0;
6812: my $adv=0;
6813: my $rar=0;
6814: my %grouproles = ();
6815: if (keys(%{$allgroups}) > 0) {
6816: my @groupkeys;
6817: foreach my $role (keys(%{$allroles})) {
6818: push(@groupkeys,$role);
6819: }
6820: if (ref($groups_roles) eq 'HASH') {
6821: foreach my $key (keys(%{$groups_roles})) {
6822: unless (grep(/^\Q$key\E$/,@groupkeys)) {
6823: push(@groupkeys,$key);
6824: }
6825: }
6826: }
6827: if (@groupkeys > 0) {
6828: foreach my $role (@groupkeys) {
6829: my ($trole,$area,$sec,$extendedarea);
6830: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
6831: $trole = $1;
6832: $area = $2;
6833: $sec = $3;
6834: $extendedarea = $area.$sec;
6835: if (exists($$allgroups{$area})) {
6836: foreach my $group (keys(%{$$allgroups{$area}})) {
6837: my $spec = $trole.'.'.$extendedarea;
6838: $grouproles{$spec.'.'.$area.'/'.$group} =
6839: $$allgroups{$area}{$group};
6840: }
6841: }
6842: }
6843: }
6844: }
6845: }
6846: foreach my $group (keys(%grouproles)) {
6847: $$allroles{$group} = $grouproles{$group};
6848: }
6849: foreach my $role (keys(%{$allroles})) {
6850: my %thesepriv;
6851: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
6852: foreach my $item (split(/:/,$$allroles{$role})) {
6853: if ($item ne '') {
6854: my ($privilege,$restrictions)=split(/&/,$item);
6855: if ($restrictions eq '') {
6856: $thesepriv{$privilege}='F';
6857: } elsif ($thesepriv{$privilege} ne 'F') {
6858: $thesepriv{$privilege}.=$restrictions;
6859: }
6860: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
6861: if ($thesepriv{'rar'} eq 'F') { $rar=1; }
6862: }
6863: }
6864: my $thesestr='';
6865: foreach my $priv (sort(keys(%thesepriv))) {
6866: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
6867: }
6868: $userroles->{'user.priv.'.$role} = $thesestr;
6869: }
6870: return ($author,$adv,$rar);
6871: }
6872:
6873: sub role_status {
6874: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
6875: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
6876: my ($one,$two) = split(m{\./},$rolekey,2);
6877: (undef,undef,$$role) = split(/\./,$one,3);
6878: unless (!defined($$role) || $$role eq '') {
6879: $$where = '/'.$two;
6880: $$trolecode=$$role.'.'.$$where;
6881: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
6882: $$tstatus='is';
6883: if ($$tstart && $$tstart>$update) {
6884: $$tstatus='future';
6885: if ($$tstart<$now) {
6886: if ($$tstart && $$tstart>$refresh) {
6887: if (($$where ne '') && ($$role ne '')) {
6888: my (%allroles,%allgroups,$group_privs,
6889: %groups_roles,@rolecodes);
6890: my %userroles = (
6891: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
6892: );
6893: @rolecodes = ('cm');
6894: my $spec=$$role.'.'.$$where;
6895: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
6896: if ($$role =~ /^cr\//) {
6897: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
6898: push(@rolecodes,'cr');
6899: } elsif ($$role eq 'gr') {
6900: push(@rolecodes,$$role);
6901: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
6902: $env{'user.name'});
6903: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
6904: (undef,my $group_privs) = split(/\//,$trole);
6905: $group_privs = &unescape($group_privs);
6906: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
6907: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
6908: &get_groups_roles($tdomain,$trest,
6909: \%course_roles,\@rolecodes,
6910: \%groups_roles);
6911: } else {
6912: push(@rolecodes,$$role);
6913: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
6914: }
6915: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%allroles,\%allgroups,
6916: \%groups_roles);
6917: &appenv(\%userroles,\@rolecodes);
6918: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
6919: }
6920: }
6921: $$tstatus = 'is';
6922: }
6923: }
6924: if ($$tend) {
6925: if ($$tend<$update) {
6926: $$tstatus='expired';
6927: } elsif ($$tend<$now) {
6928: $$tstatus='will_not';
6929: }
6930: }
6931: }
6932: }
6933: }
6934:
6935: sub get_groups_roles {
6936: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
6937: return unless((ref($cdom_courseroles) eq 'HASH') &&
6938: (ref($rolecodes) eq 'ARRAY') &&
6939: (ref($groups_roles) eq 'HASH'));
6940: if (keys(%{$cdom_courseroles}) > 0) {
6941: my ($cnum) = ($rest =~ /^($match_courseid)/);
6942: if ($cdom ne '' && $cnum ne '') {
6943: foreach my $key (keys(%{$cdom_courseroles})) {
6944: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
6945: my $crsrole = $1;
6946: my $crssec = $2;
6947: if ($crsrole =~ /^cr/) {
6948: unless (grep(/^cr$/,@{$rolecodes})) {
6949: push(@{$rolecodes},'cr');
6950: }
6951: } else {
6952: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
6953: push(@{$rolecodes},$crsrole);
6954: }
6955: }
6956: my $rolekey = "$crsrole./$cdom/$cnum";
6957: if ($crssec ne '') {
6958: $rolekey .= "/$crssec";
6959: }
6960: $rolekey .= './';
6961: $groups_roles->{$rolekey} = $rolecodes;
6962: }
6963: }
6964: }
6965: }
6966: return;
6967: }
6968:
6969: sub delete_env_groupprivs {
6970: my ($where,$courseroles,$possroles) = @_;
6971: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
6972: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
6973: unless (ref($courseroles->{$udom}) eq 'HASH') {
6974: %{$courseroles->{$udom}} =
6975: &get_my_roles('','','userroles',['active'],
6976: $possroles,[$udom],1);
6977: }
6978: if (ref($courseroles->{$udom}) eq 'HASH') {
6979: foreach my $item (keys(%{$courseroles->{$udom}})) {
6980: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
6981: my $area = '/'.$cdom.'/'.$cnum;
6982: my $privkey = "user.priv.$crsrole.$area";
6983: if ($crssec ne '') {
6984: $privkey .= '/'.$crssec;
6985: }
6986: $privkey .= ".$area/$group";
6987: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
6988: }
6989: }
6990: return;
6991: }
6992:
6993: sub check_adhoc_privs {
6994: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller,$sec) = @_;
6995: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
6996: if ($sec) {
6997: $cckey .= '/'.$sec;
6998: }
6999: my $setprivs;
7000: if ($env{$cckey}) {
7001: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
7002: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
7003: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
7004: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
7005: $setprivs = 1;
7006: }
7007: } else {
7008: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
7009: $setprivs = 1;
7010: }
7011: return $setprivs;
7012: }
7013:
7014: sub set_adhoc_privileges {
7015: # role can be cc, ca, or cr/<dom>/<dom>-domainconfig/role
7016: my ($dcdom,$pickedcourse,$role,$caller,$sec) = @_;
7017: my $area = '/'.$dcdom.'/'.$pickedcourse;
7018: if ($sec ne '') {
7019: $area .= '/'.$sec;
7020: }
7021: my $spec = $role.'.'.$area;
7022: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
7023: $env{'user.name'},1);
7024: my %rolehash = ();
7025: if ($role =~ m{^\Qcr/$dcdom/$dcdom\E\-domainconfig/(\w+)$}) {
7026: my $rolename = $1;
7027: &custom_roleprivs(\%rolehash,$role,$dcdom,$pickedcourse,$spec,$area);
7028: my %domdef = &get_domain_defaults($dcdom);
7029: if (ref($domdef{'adhocroles'}) eq 'HASH') {
7030: if (ref($domdef{'adhocroles'}{$rolename}) eq 'HASH') {
7031: &appenv({'request.role.desc' => $domdef{'adhocroles'}{$rolename}{'desc'},});
7032: }
7033: }
7034: } else {
7035: &standard_roleprivs(\%rolehash,$role,$dcdom,$spec,$pickedcourse,$area);
7036: }
7037: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%rolehash);
7038: &appenv(\%userroles,[$role,'cm']);
7039: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
7040: unless (($caller eq 'constructaccess' && $env{'request.course.id'}) ||
7041: ($caller eq 'tiny')) {
7042: &appenv( {'request.role' => $spec,
7043: 'request.role.domain' => $dcdom,
7044: 'request.course.sec' => $sec,
7045: }
7046: );
7047: my $tadv=0;
7048: if (&allowed('adv') eq 'F') { $tadv=1; }
7049: &appenv({'request.role.adv' => $tadv});
7050: }
7051: }
7052:
7053: # --------------------------------------------------------------- get interface
7054:
7055: sub get {
7056: my ($namespace,$storearr,$udomain,$uname)=@_;
7057: my $items='';
7058: foreach my $item (@$storearr) {
7059: $items.=&escape($item).'&';
7060: }
7061: $items=~s/\&$//;
7062: if (!$udomain) { $udomain=$env{'user.domain'}; }
7063: if (!$uname) { $uname=$env{'user.name'}; }
7064: my $uhome=&homeserver($uname,$udomain);
7065:
7066: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
7067: my @pairs=split(/\&/,$rep);
7068: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
7069: return @pairs;
7070: }
7071: my %returnhash=();
7072: my $i=0;
7073: foreach my $item (@$storearr) {
7074: $returnhash{$item}=&thaw_unescape($pairs[$i]);
7075: $i++;
7076: }
7077: return %returnhash;
7078: }
7079:
7080: # --------------------------------------------------------------- del interface
7081:
7082: sub del {
7083: my ($namespace,$storearr,$udomain,$uname)=@_;
7084: my $items='';
7085: foreach my $item (@$storearr) {
7086: $items.=&escape($item).'&';
7087: }
7088:
7089: $items=~s/\&$//;
7090: if (!$udomain) { $udomain=$env{'user.domain'}; }
7091: if (!$uname) { $uname=$env{'user.name'}; }
7092: my $uhome=&homeserver($uname,$udomain);
7093: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
7094: }
7095:
7096: # -------------------------------------------------------------- dump interface
7097:
7098: sub unserialize {
7099: my ($rep, $escapedkeys) = @_;
7100:
7101: return {} if $rep =~ /^error/;
7102:
7103: my %returnhash=();
7104: foreach my $item (split(/\&/,$rep)) {
7105: my ($key, $value) = split(/=/, $item, 2);
7106: $key = unescape($key) unless $escapedkeys;
7107: next if $key =~ /^error: 2 /;
7108: $returnhash{$key} = &thaw_unescape($value);
7109: }
7110: #return %returnhash;
7111: return \%returnhash;
7112: }
7113:
7114: # see Lond::dump_with_regexp
7115: # if $escapedkeys hash keys won't get unescaped.
7116: sub dump {
7117: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys,$encrypt)=@_;
7118: if (!$udomain) { $udomain=$env{'user.domain'}; }
7119: if (!$uname) { $uname=$env{'user.name'}; }
7120: my $uhome=&homeserver($uname,$udomain);
7121:
7122: if ($regexp) {
7123: $regexp=&escape($regexp);
7124: } else {
7125: $regexp='.';
7126: }
7127: if (grep { $_ eq $uhome } current_machine_ids()) {
7128: # user is hosted on this machine
7129: my $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
7130: $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
7131: return %{unserialize($reply, $escapedkeys)};
7132: }
7133: my $rep;
7134: if ($encrypt) {
7135: $rep=&reply("encrypt:edump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
7136: } else {
7137: $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
7138: }
7139: my @pairs=split(/\&/,$rep);
7140: my %returnhash=();
7141: if (!($rep =~ /^error/ )) {
7142: foreach my $item (@pairs) {
7143: my ($key,$value)=split(/=/,$item,2);
7144: $key = unescape($key) unless $escapedkeys;
7145: #$key = &unescape($key);
7146: next if ($key =~ /^error: 2 /);
7147: $returnhash{$key}=&thaw_unescape($value);
7148: }
7149: }
7150: return %returnhash;
7151: }
7152:
7153:
7154: # --------------------------------------------------------- dumpstore interface
7155:
7156: sub dumpstore {
7157: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
7158: # same as dump but keys must be escaped. They may contain colon separated
7159: # lists of values that may themself contain colons (e.g. symbs).
7160: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
7161: }
7162:
7163: # -------------------------------------------------------------- keys interface
7164:
7165: sub getkeys {
7166: my ($namespace,$udomain,$uname)=@_;
7167: if (!$udomain) { $udomain=$env{'user.domain'}; }
7168: if (!$uname) { $uname=$env{'user.name'}; }
7169: my $uhome=&homeserver($uname,$udomain);
7170: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
7171: my @keyarray=();
7172: foreach my $key (split(/\&/,$rep)) {
7173: next if ($key =~ /^error: 2 /);
7174: push(@keyarray,&unescape($key));
7175: }
7176: return @keyarray;
7177: }
7178:
7179: # --------------------------------------------------------------- currentdump
7180: sub currentdump {
7181: my ($courseid,$sdom,$sname)=@_;
7182: $courseid = $env{'request.course.id'} if (! defined($courseid));
7183: $sdom = $env{'user.domain'} if (! defined($sdom));
7184: $sname = $env{'user.name'} if (! defined($sname));
7185: my $uhome = &homeserver($sname,$sdom);
7186: my $rep;
7187:
7188: if (grep { $_ eq $uhome } current_machine_ids()) {
7189: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
7190: $courseid)));
7191: } else {
7192: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
7193: }
7194:
7195: return if ($rep =~ /^(error:|no_such_host)/);
7196: #
7197: my %returnhash=();
7198: #
7199: if ($rep eq 'unknown_cmd') {
7200: # an old lond will not know currentdump
7201: # Do a dump and make it look like a currentdump
7202: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
7203: return if ($tmp[0] =~ /^(error:|no_such_host)/);
7204: my %hash = @tmp;
7205: @tmp=();
7206: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
7207: } else {
7208: my @pairs=split(/\&/,$rep);
7209: foreach my $pair (@pairs) {
7210: my ($key,$value)=split(/=/,$pair,2);
7211: my ($symb,$param) = split(/:/,$key);
7212: $returnhash{&unescape($symb)}->{&unescape($param)} =
7213: &thaw_unescape($value);
7214: }
7215: }
7216: return %returnhash;
7217: }
7218:
7219: sub convert_dump_to_currentdump{
7220: my %hash = %{shift()};
7221: my %returnhash;
7222: # Code ripped from lond, essentially. The only difference
7223: # here is the unescaping done by lonnet::dump(). Conceivably
7224: # we might run in to problems with parameter names =~ /^v\./
7225: while (my ($key,$value) = each(%hash)) {
7226: my ($v,$symb,$param) = split(/:/,$key);
7227: $symb = &unescape($symb);
7228: $param = &unescape($param);
7229: next if ($v eq 'version' || $symb eq 'keys');
7230: next if (exists($returnhash{$symb}) &&
7231: exists($returnhash{$symb}->{$param}) &&
7232: $returnhash{$symb}->{'v.'.$param} > $v);
7233: $returnhash{$symb}->{$param}=$value;
7234: $returnhash{$symb}->{'v.'.$param}=$v;
7235: }
7236: #
7237: # Remove all of the keys in the hashes which keep track of
7238: # the version of the parameter.
7239: while (my ($symb,$param_hash) = each(%returnhash)) {
7240: # use a foreach because we are going to delete from the hash.
7241: foreach my $key (keys(%$param_hash)) {
7242: delete($param_hash->{$key}) if ($key =~ /^v\./);
7243: }
7244: }
7245: return \%returnhash;
7246: }
7247:
7248: # ------------------------------------------------------ critical inc interface
7249:
7250: sub cinc {
7251: return &inc(@_,'critical');
7252: }
7253:
7254: # --------------------------------------------------------------- inc interface
7255:
7256: sub inc {
7257: my ($namespace,$store,$udomain,$uname,$critical) = @_;
7258: if (!$udomain) { $udomain=$env{'user.domain'}; }
7259: if (!$uname) { $uname=$env{'user.name'}; }
7260: my $uhome=&homeserver($uname,$udomain);
7261: my $items='';
7262: if (! ref($store)) {
7263: # got a single value, so use that instead
7264: $items = &escape($store).'=&';
7265: } elsif (ref($store) eq 'SCALAR') {
7266: $items = &escape($$store).'=&';
7267: } elsif (ref($store) eq 'ARRAY') {
7268: $items = join('=&',map {&escape($_);} @{$store});
7269: } elsif (ref($store) eq 'HASH') {
7270: while (my($key,$value) = each(%{$store})) {
7271: $items.= &escape($key).'='.&escape($value).'&';
7272: }
7273: }
7274: $items=~s/\&$//;
7275: if ($critical) {
7276: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
7277: } else {
7278: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
7279: }
7280: }
7281:
7282: # --------------------------------------------------------------- put interface
7283:
7284: sub put {
7285: my ($namespace,$storehash,$udomain,$uname,$encrypt)=@_;
7286: if (!$udomain) { $udomain=$env{'user.domain'}; }
7287: if (!$uname) { $uname=$env{'user.name'}; }
7288: my $uhome=&homeserver($uname,$udomain);
7289: my $items='';
7290: foreach my $item (keys(%$storehash)) {
7291: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
7292: }
7293: $items=~s/\&$//;
7294: if ($encrypt) {
7295: return &reply("encrypt:put:$udomain:$uname:$namespace:$items",$uhome);
7296: } else {
7297: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
7298: }
7299: }
7300:
7301: # ------------------------------------------------------------ newput interface
7302:
7303: sub newput {
7304: my ($namespace,$storehash,$udomain,$uname)=@_;
7305: if (!$udomain) { $udomain=$env{'user.domain'}; }
7306: if (!$uname) { $uname=$env{'user.name'}; }
7307: my $uhome=&homeserver($uname,$udomain);
7308: my $items='';
7309: foreach my $key (keys(%$storehash)) {
7310: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
7311: }
7312: $items=~s/\&$//;
7313: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
7314: }
7315:
7316: # --------------------------------------------------------- putstore interface
7317:
7318: sub putstore {
7319: my ($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog)=@_;
7320: if (!$udomain) { $udomain=$env{'user.domain'}; }
7321: if (!$uname) { $uname=$env{'user.name'}; }
7322: my $uhome=&homeserver($uname,$udomain);
7323: my $items='';
7324: foreach my $key (keys(%$storehash)) {
7325: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
7326: }
7327: $items=~s/\&$//;
7328: my $esc_symb=&escape($symb);
7329: my $esc_v=&escape($version);
7330: my $reply =
7331: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
7332: $uhome);
7333: if (($tolog) && ($reply eq 'ok')) {
7334: my $namevalue='';
7335: foreach my $key (keys(%{$storehash})) {
7336: $namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&';
7337: }
7338: my $ip = &get_requestor_ip();
7339: $namevalue .= 'ip='.&escape($ip).
7340: '&host='.&escape($perlvar{'lonHostID'}).
7341: '&version='.$esc_v.
7342: '&by='.&escape($env{'user.name'}.':'.$env{'user.domain'});
7343: &Apache::lonnet::courselog($symb.':'.$uname.':'.$udomain.':PUTSTORE:'.$namevalue);
7344: }
7345: if ($reply eq 'unknown_cmd') {
7346: # gfall back to way things use to be done
7347: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
7348: $uname);
7349: }
7350: return $reply;
7351: }
7352:
7353: sub old_putstore {
7354: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
7355: if (!$udomain) { $udomain=$env{'user.domain'}; }
7356: if (!$uname) { $uname=$env{'user.name'}; }
7357: my $uhome=&homeserver($uname,$udomain);
7358: my %newstorehash;
7359: foreach my $item (keys(%$storehash)) {
7360: my $key = $version.':'.&escape($symb).':'.$item;
7361: $newstorehash{$key} = $storehash->{$item};
7362: }
7363: my $items='';
7364: my %allitems = ();
7365: foreach my $item (keys(%newstorehash)) {
7366: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
7367: my $key = $1.':keys:'.$2;
7368: $allitems{$key} .= $3.':';
7369: }
7370: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
7371: }
7372: foreach my $item (keys(%allitems)) {
7373: $allitems{$item} =~ s/\:$//;
7374: $items.= $item.'='.$allitems{$item}.'&';
7375: }
7376: $items=~s/\&$//;
7377: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
7378: }
7379:
7380: # ------------------------------------------------------ critical put interface
7381:
7382: sub cput {
7383: my ($namespace,$storehash,$udomain,$uname)=@_;
7384: if (!$udomain) { $udomain=$env{'user.domain'}; }
7385: if (!$uname) { $uname=$env{'user.name'}; }
7386: my $uhome=&homeserver($uname,$udomain);
7387: my $items='';
7388: foreach my $item (keys(%$storehash)) {
7389: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
7390: }
7391: $items=~s/\&$//;
7392: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
7393: }
7394:
7395: # -------------------------------------------------------------- eget interface
7396:
7397: sub eget {
7398: my ($namespace,$storearr,$udomain,$uname)=@_;
7399: my $items='';
7400: foreach my $item (@$storearr) {
7401: $items.=&escape($item).'&';
7402: }
7403: $items=~s/\&$//;
7404: if (!$udomain) { $udomain=$env{'user.domain'}; }
7405: if (!$uname) { $uname=$env{'user.name'}; }
7406: my $uhome=&homeserver($uname,$udomain);
7407: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
7408: my @pairs=split(/\&/,$rep);
7409: my %returnhash=();
7410: my $i=0;
7411: foreach my $item (@$storearr) {
7412: $returnhash{$item}=&thaw_unescape($pairs[$i]);
7413: $i++;
7414: }
7415: return %returnhash;
7416: }
7417:
7418: # ------------------------------------------------------------ tmpput interface
7419: sub tmpput {
7420: my ($storehash,$server,$context)=@_;
7421: my $items='';
7422: foreach my $item (keys(%$storehash)) {
7423: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
7424: }
7425: $items=~s/\&$//;
7426: if (defined($context)) {
7427: $items .= ':'.&escape($context);
7428: }
7429: return &reply("tmpput:$items",$server);
7430: }
7431:
7432: # ------------------------------------------------------------ tmpget interface
7433: sub tmpget {
7434: my ($token,$server)=@_;
7435: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
7436: my $rep=&reply("tmpget:$token",$server);
7437: my %returnhash;
7438: if ($rep =~ /^(con_lost|error|no_such_host)/i) {
7439: return %returnhash;
7440: }
7441: foreach my $item (split(/\&/,$rep)) {
7442: my ($key,$value)=split(/=/,$item);
7443: $returnhash{&unescape($key)}=&thaw_unescape($value);
7444: }
7445: return %returnhash;
7446: }
7447:
7448: # ------------------------------------------------------------ tmpdel interface
7449: sub tmpdel {
7450: my ($token,$server)=@_;
7451: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
7452: return &reply("tmpdel:$token",$server);
7453: }
7454:
7455: # ------------------------------------------------------------ get_timebased_id
7456:
7457: sub get_timebased_id {
7458: my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
7459: $maxtries) = @_;
7460: my ($newid,$error,$dellock);
7461: unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
7462: return ('','ok','invalid call to get suffix');
7463: }
7464:
7465: # set defaults for any optional args for which values were not supplied
7466: if ($who eq '') {
7467: $who = $env{'user.name'}.':'.$env{'user.domain'};
7468: }
7469: if (!$locktries) {
7470: $locktries = 3;
7471: }
7472: if (!$maxtries) {
7473: $maxtries = 10;
7474: }
7475:
7476: if (($cdom eq '') || ($cnum eq '')) {
7477: if ($env{'request.course.id'}) {
7478: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7479: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7480: }
7481: if (($cdom eq '') || ($cnum eq '')) {
7482: return ('','ok','call to get suffix not in course context');
7483: }
7484: }
7485:
7486: # construct locking item
7487: my $lockhash = {
7488: $prefix."\0".'locked_'.$keyid => $who,
7489: };
7490: my $tries = 0;
7491:
7492: # attempt to get lock on nohist_$namespace file
7493: my $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
7494: while (($gotlock ne 'ok') && $tries <$locktries) {
7495: $tries ++;
7496: sleep 1;
7497: $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
7498: }
7499:
7500: # attempt to get unique identifier, based on current timestamp
7501: if ($gotlock eq 'ok') {
7502: my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
7503: my $id = time;
7504: $newid = $id;
7505: if ($idtype eq 'addcode') {
7506: $newid .= &sixnum_code();
7507: }
7508: my $idtries = 0;
7509: while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
7510: if ($idtype eq 'concat') {
7511: $newid = $id.$idtries;
7512: } elsif ($idtype eq 'addcode') {
7513: $newid = $newid.&sixnum_code();
7514: } else {
7515: $newid ++;
7516: }
7517: $idtries ++;
7518: }
7519: if (!exists($inuse{$prefix."\0".$newid})) {
7520: my %new_item = (
7521: $prefix."\0".$newid => $who,
7522: );
7523: my $putresult = &Apache::lonnet::put('nohist_'.$namespace,\%new_item,
7524: $cdom,$cnum);
7525: if ($putresult ne 'ok') {
7526: undef($newid);
7527: $error = 'error saving new item: '.$putresult;
7528: }
7529: } else {
7530: undef($newid);
7531: $error = ('error: no unique suffix available for the new item ');
7532: }
7533: # remove lock
7534: my @del_lock = ($prefix."\0".'locked_'.$keyid);
7535: $dellock = &Apache::lonnet::del('nohist_'.$namespace,\@del_lock,$cdom,$cnum);
7536: } else {
7537: $error = "error: could not obtain lockfile\n";
7538: $dellock = 'ok';
7539: if (($prefix eq 'paste') && ($namespace eq 'courseeditor') && ($keyid eq 'num')) {
7540: $dellock = 'nolock';
7541: }
7542: }
7543: return ($newid,$dellock,$error);
7544: }
7545:
7546: sub sixnum_code {
7547: my $code;
7548: for (0..6) {
7549: $code .= int( rand(9) );
7550: }
7551: return $code;
7552: }
7553:
7554: # -------------------------------------------------- portfolio access checking
7555:
7556: sub portfolio_access {
7557: my ($requrl,$clientip) = @_;
7558: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
7559: my $result = &get_portfolio_access($udom,$unum,$file_name,$group,$clientip);
7560: if ($result) {
7561: my %setters;
7562: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
7563: my ($startblock,$endblock) =
7564: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
7565: if ($startblock && $endblock) {
7566: return 'B';
7567: }
7568: } else {
7569: my ($startblock,$endblock) =
7570: &Apache::loncommon::blockcheck(\%setters,'port');
7571: if ($startblock && $endblock) {
7572: return 'B';
7573: }
7574: }
7575: }
7576: if ($result eq 'ok') {
7577: return 'F';
7578: } elsif ($result =~ /^[^:]+:guest_/) {
7579: return 'A';
7580: }
7581: return '';
7582: }
7583:
7584: sub get_portfolio_access {
7585: my ($udom,$unum,$file_name,$group,$clientip,$access_hash) = @_;
7586:
7587: if (!ref($access_hash)) {
7588: my $current_perms = &get_portfile_permissions($udom,$unum);
7589: my %access_controls = &get_access_controls($current_perms,$group,
7590: $file_name);
7591: $access_hash = $access_controls{$file_name};
7592: }
7593:
7594: my ($public,$guest,@domains,@users,@courses,@groups,@ips);
7595: my $now = time;
7596: if (ref($access_hash) eq 'HASH') {
7597: foreach my $key (keys(%{$access_hash})) {
7598: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
7599: if ($start > $now) {
7600: next;
7601: }
7602: if ($end && $end<$now) {
7603: next;
7604: }
7605: if ($scope eq 'public') {
7606: $public = $key;
7607: last;
7608: } elsif ($scope eq 'guest') {
7609: $guest = $key;
7610: } elsif ($scope eq 'domains') {
7611: push(@domains,$key);
7612: } elsif ($scope eq 'users') {
7613: push(@users,$key);
7614: } elsif ($scope eq 'course') {
7615: push(@courses,$key);
7616: } elsif ($scope eq 'group') {
7617: push(@groups,$key);
7618: } elsif ($scope eq 'ip') {
7619: push(@ips,$key);
7620: }
7621: }
7622: if ($public) {
7623: return 'ok';
7624: } elsif (@ips > 0) {
7625: my $allowed;
7626: foreach my $ipkey (@ips) {
7627: if (ref($access_hash->{$ipkey}{'ip'}) eq 'ARRAY') {
7628: if (&Apache::loncommon::check_ip_acc(join(',',@{$access_hash->{$ipkey}{'ip'}}),$clientip)) {
7629: $allowed = 1;
7630: last;
7631: }
7632: }
7633: }
7634: if ($allowed) {
7635: return 'ok';
7636: }
7637: }
7638: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
7639: if ($guest) {
7640: return $guest;
7641: }
7642: } else {
7643: if (@domains > 0) {
7644: foreach my $domkey (@domains) {
7645: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
7646: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
7647: return 'ok';
7648: }
7649: }
7650: }
7651: }
7652: if (@users > 0) {
7653: foreach my $userkey (@users) {
7654: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
7655: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
7656: if (ref($item) eq 'HASH') {
7657: if (($item->{'uname'} eq $env{'user.name'}) &&
7658: ($item->{'udom'} eq $env{'user.domain'})) {
7659: return 'ok';
7660: }
7661: }
7662: }
7663: }
7664: }
7665: }
7666: my %roleshash;
7667: my @courses_and_groups = @courses;
7668: push(@courses_and_groups,@groups);
7669: if (@courses_and_groups > 0) {
7670: my (%allgroups,%allroles);
7671: my ($start,$end,$role,$sec,$group);
7672: foreach my $envkey (%env) {
7673: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
7674: my $cid = $2.'_'.$3;
7675: if ($1 eq 'gr') {
7676: $group = $4;
7677: $allgroups{$cid}{$group} = $env{$envkey};
7678: } else {
7679: if ($4 eq '') {
7680: $sec = 'none';
7681: } else {
7682: $sec = $4;
7683: }
7684: $allroles{$cid}{$1}{$sec} = $env{$envkey};
7685: }
7686: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
7687: my $cid = $2.'_'.$3;
7688: if ($4 eq '') {
7689: $sec = 'none';
7690: } else {
7691: $sec = $4;
7692: }
7693: $allroles{$cid}{$1}{$sec} = $env{$envkey};
7694: }
7695: }
7696: if (keys(%allroles) == 0) {
7697: return;
7698: }
7699: foreach my $key (@courses_and_groups) {
7700: my %content = %{$$access_hash{$key}};
7701: my $cnum = $content{'number'};
7702: my $cdom = $content{'domain'};
7703: my $cid = $cdom.'_'.$cnum;
7704: if (!exists($allroles{$cid})) {
7705: next;
7706: }
7707: foreach my $role_id (keys(%{$content{'roles'}})) {
7708: my @sections = @{$content{'roles'}{$role_id}{'section'}};
7709: my @groups = @{$content{'roles'}{$role_id}{'group'}};
7710: my @status = @{$content{'roles'}{$role_id}{'access'}};
7711: my @roles = @{$content{'roles'}{$role_id}{'role'}};
7712: foreach my $role (keys(%{$allroles{$cid}})) {
7713: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
7714: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
7715: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
7716: if (grep/^all$/,@sections) {
7717: return 'ok';
7718: } else {
7719: if (grep/^$sec$/,@sections) {
7720: return 'ok';
7721: }
7722: }
7723: }
7724: }
7725: if (keys(%{$allgroups{$cid}}) == 0) {
7726: if (grep/^none$/,@groups) {
7727: return 'ok';
7728: }
7729: } else {
7730: if (grep/^all$/,@groups) {
7731: return 'ok';
7732: }
7733: foreach my $group (keys(%{$allgroups{$cid}})) {
7734: if (grep/^$group$/,@groups) {
7735: return 'ok';
7736: }
7737: }
7738: }
7739: }
7740: }
7741: }
7742: }
7743: }
7744: if ($guest) {
7745: return $guest;
7746: }
7747: }
7748: }
7749: return;
7750: }
7751:
7752: sub course_group_datechecker {
7753: my ($dates,$now,$status) = @_;
7754: my ($start,$end) = split(/\./,$dates);
7755: if (!$start && !$end) {
7756: return 'ok';
7757: }
7758: if (grep/^active$/,@{$status}) {
7759: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
7760: return 'ok';
7761: }
7762: }
7763: if (grep/^previous$/,@{$status}) {
7764: if ($end > $now ) {
7765: return 'ok';
7766: }
7767: }
7768: if (grep/^future$/,@{$status}) {
7769: if ($start > $now) {
7770: return 'ok';
7771: }
7772: }
7773: return;
7774: }
7775:
7776: sub parse_portfolio_url {
7777: my ($url) = @_;
7778:
7779: my ($type,$udom,$unum,$group,$file_name);
7780:
7781: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
7782: $type = 1;
7783: $udom = $1;
7784: $unum = $2;
7785: $file_name = $3;
7786: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
7787: $type = 2;
7788: $udom = $1;
7789: $unum = $2;
7790: $group = $3;
7791: $file_name = $3.'/'.$4;
7792: }
7793: if (wantarray) {
7794: return ($type,$udom,$unum,$file_name,$group);
7795: }
7796: return $type;
7797: }
7798:
7799: sub is_portfolio_url {
7800: my ($url) = @_;
7801: return scalar(&parse_portfolio_url($url));
7802: }
7803:
7804: sub is_portfolio_file {
7805: my ($file) = @_;
7806: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
7807: return 1;
7808: }
7809: return;
7810: }
7811:
7812: sub usertools_access {
7813: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
7814: my ($access,%tools);
7815: if ($context eq '') {
7816: $context = 'tools';
7817: }
7818: if ($context eq 'requestcourses') {
7819: %tools = (
7820: official => 1,
7821: unofficial => 1,
7822: community => 1,
7823: textbook => 1,
7824: placement => 1,
7825: lti => 1,
7826: );
7827: } elsif ($context eq 'requestauthor') {
7828: %tools = (
7829: requestauthor => 1,
7830: );
7831: } else {
7832: %tools = (
7833: aboutme => 1,
7834: blog => 1,
7835: webdav => 1,
7836: portfolio => 1,
7837: );
7838: }
7839: return if (!defined($tools{$tool}));
7840:
7841: if (($udom eq '') || ($uname eq '')) {
7842: $udom = $env{'user.domain'};
7843: $uname = $env{'user.name'};
7844: }
7845:
7846: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7847: if ($action ne 'reload') {
7848: if ($context eq 'requestcourses') {
7849: return $env{'environment.canrequest.'.$tool};
7850: } elsif ($context eq 'requestauthor') {
7851: return $env{'environment.canrequest.author'};
7852: } else {
7853: return $env{'environment.availabletools.'.$tool};
7854: }
7855: }
7856: }
7857:
7858: my ($toolstatus,$inststatus,$envkey);
7859: if ($context eq 'requestauthor') {
7860: $envkey = $context;
7861: } else {
7862: $envkey = $context.'.'.$tool;
7863: }
7864:
7865: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
7866: ($action ne 'reload')) {
7867: $toolstatus = $env{'environment.'.$envkey};
7868: $inststatus = $env{'environment.inststatus'};
7869: } else {
7870: if (ref($userenvref) eq 'HASH') {
7871: $toolstatus = $userenvref->{$envkey};
7872: $inststatus = $userenvref->{'inststatus'};
7873: } else {
7874: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
7875: $toolstatus = $userenv{$envkey};
7876: $inststatus = $userenv{'inststatus'};
7877: }
7878: }
7879:
7880: if ($toolstatus ne '') {
7881: if ($toolstatus) {
7882: $access = 1;
7883: } else {
7884: $access = 0;
7885: }
7886: return $access;
7887: }
7888:
7889: my ($is_adv,%domdef);
7890: if (ref($is_advref) eq 'HASH') {
7891: $is_adv = $is_advref->{'is_adv'};
7892: } else {
7893: $is_adv = &is_advanced_user($udom,$uname);
7894: }
7895: if (ref($domdefref) eq 'HASH') {
7896: %domdef = %{$domdefref};
7897: } else {
7898: %domdef = &get_domain_defaults($udom);
7899: }
7900: if (ref($domdef{$tool}) eq 'HASH') {
7901: if ($is_adv) {
7902: if ($domdef{$tool}{'_LC_adv'} ne '') {
7903: if ($domdef{$tool}{'_LC_adv'}) {
7904: $access = 1;
7905: } else {
7906: $access = 0;
7907: }
7908: return $access;
7909: }
7910: }
7911: if ($inststatus ne '') {
7912: my ($hasaccess,$hasnoaccess);
7913: foreach my $affiliation (split(/:/,$inststatus)) {
7914: if ($domdef{$tool}{$affiliation} ne '') {
7915: if ($domdef{$tool}{$affiliation}) {
7916: $hasaccess = 1;
7917: } else {
7918: $hasnoaccess = 1;
7919: }
7920: }
7921: }
7922: if ($hasaccess || $hasnoaccess) {
7923: if ($hasaccess) {
7924: $access = 1;
7925: } elsif ($hasnoaccess) {
7926: $access = 0;
7927: }
7928: return $access;
7929: }
7930: } else {
7931: if ($domdef{$tool}{'default'} ne '') {
7932: if ($domdef{$tool}{'default'}) {
7933: $access = 1;
7934: } elsif ($domdef{$tool}{'default'} == 0) {
7935: $access = 0;
7936: }
7937: return $access;
7938: }
7939: }
7940: } else {
7941: if (($context eq 'tools') && ($tool ne 'webdav')) {
7942: $access = 1;
7943: } else {
7944: $access = 0;
7945: }
7946: return $access;
7947: }
7948: }
7949:
7950: sub is_course_owner {
7951: my ($cdom,$cnum,$udom,$uname) = @_;
7952: if (($udom eq '') || ($uname eq '')) {
7953: $udom = $env{'user.domain'};
7954: $uname = $env{'user.name'};
7955: }
7956: unless (($udom eq '') || ($uname eq '')) {
7957: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
7958: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
7959: return 1;
7960: } else {
7961: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
7962: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
7963: return 1;
7964: }
7965: }
7966: }
7967: }
7968: return;
7969: }
7970:
7971: sub is_advanced_user {
7972: my ($udom,$uname) = @_;
7973: if ($udom ne '' && $uname ne '') {
7974: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7975: if (wantarray) {
7976: return ($env{'user.adv'},$env{'user.author'});
7977: } else {
7978: return $env{'user.adv'};
7979: }
7980: }
7981: }
7982: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
7983: my %allroles;
7984: my ($is_adv,$is_author);
7985: foreach my $role (keys(%roleshash)) {
7986: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
7987: my $area = '/'.$tdomain.'/'.$trest;
7988: if ($sec ne '') {
7989: $area .= '/'.$sec;
7990: }
7991: if (($area ne '') && ($trole ne '')) {
7992: my $spec=$trole.'.'.$area;
7993: if ($trole =~ /^cr\//) {
7994: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
7995: } elsif ($trole ne 'gr') {
7996: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
7997: }
7998: if ($trole eq 'au') {
7999: $is_author = 1;
8000: }
8001: }
8002: }
8003: foreach my $role (keys(%allroles)) {
8004: last if ($is_adv);
8005: foreach my $item (split(/:/,$allroles{$role})) {
8006: if ($item ne '') {
8007: my ($privilege,$restrictions)=split(/&/,$item);
8008: if ($privilege eq 'adv') {
8009: $is_adv = 1;
8010: last;
8011: }
8012: }
8013: }
8014: }
8015: if (wantarray) {
8016: return ($is_adv,$is_author);
8017: }
8018: return $is_adv;
8019: }
8020:
8021: sub check_can_request {
8022: my ($dom,$can_request,$request_domains,$uname,$udom) = @_;
8023: my $canreq = 0;
8024: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
8025: $uname = $env{'user.name'};
8026: $udom = $env{'user.domain'};
8027: }
8028: my ($types,$typename) = &Apache::loncommon::course_types();
8029: my @options = ('approval','validate','autolimit');
8030: my $optregex = join('|',@options);
8031: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
8032: foreach my $type (@{$types}) {
8033: if (&usertools_access($uname,$udom,$type,undef,
8034: 'requestcourses')) {
8035: $canreq ++;
8036: if (ref($request_domains) eq 'HASH') {
8037: push(@{$request_domains->{$type}},$udom);
8038: }
8039: if ($dom eq $udom) {
8040: $can_request->{$type} = 1;
8041: }
8042: }
8043: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '') &&
8044: ($env{'environment.reqcrsotherdom.'.$type} ne '')) {
8045: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
8046: if (@curr > 0) {
8047: foreach my $item (@curr) {
8048: if (ref($request_domains) eq 'HASH') {
8049: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
8050: if ($otherdom ne '') {
8051: if (ref($request_domains->{$type}) eq 'ARRAY') {
8052: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
8053: push(@{$request_domains->{$type}},$otherdom);
8054: }
8055: } else {
8056: push(@{$request_domains->{$type}},$otherdom);
8057: }
8058: }
8059: }
8060: }
8061: unless ($dom eq $env{'user.domain'}) {
8062: $canreq ++;
8063: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
8064: $can_request->{$type} = 1;
8065: }
8066: }
8067: }
8068: }
8069: }
8070: }
8071: return $canreq;
8072: }
8073:
8074: # ---------------------------------------------- Custom access rule evaluation
8075:
8076: sub customaccess {
8077: my ($priv,$uri)=@_;
8078: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
8079: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
8080: $udom = &LONCAPA::clean_domain($udom);
8081: $ucrs = &LONCAPA::clean_username($ucrs);
8082: my $access=0;
8083: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
8084: my ($effect,$realm,$role,$type)=split(/\:/,$right);
8085: if ($type eq 'user') {
8086: foreach my $scope (split(/\s*\,\s*/,$realm)) {
8087: my ($tdom,$tuname)=split(m{/},$scope);
8088: if ($tdom) {
8089: if ($tdom ne $env{'user.domain'}) { next; }
8090: }
8091: if ($tuname) {
8092: if ($tuname ne $env{'user.name'}) { next; }
8093: }
8094: $access=($effect eq 'allow');
8095: last;
8096: }
8097: } else {
8098: if ($role) {
8099: if ($role ne $urole) { next; }
8100: }
8101: foreach my $scope (split(/\s*\,\s*/,$realm)) {
8102: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
8103: if ($tdom) {
8104: if ($tdom ne $udom) { next; }
8105: }
8106: if ($tcrs) {
8107: if ($tcrs ne $ucrs) { next; }
8108: }
8109: if ($tsec) {
8110: if ($tsec ne $usec) { next; }
8111: }
8112: $access=($effect eq 'allow');
8113: last;
8114: }
8115: if ($realm eq '' && $role eq '') {
8116: $access=($effect eq 'allow');
8117: }
8118: }
8119: }
8120: return $access;
8121: }
8122:
8123: # ------------------------------------------------- Check for a user privilege
8124:
8125: sub allowed {
8126: my ($priv,$uri,$symb,$role,$clientip,$noblockcheck,$ignorecache,$nodeeplinkcheck,$nodeeplinkout)=@_;
8127: my $ver_orguri=$uri;
8128: $uri=&deversion($uri);
8129: my $orguri=$uri;
8130: $uri=&declutter($uri);
8131:
8132: if ($priv eq 'evb') {
8133: # Evade communication block restrictions for specified role in a course
8134: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
8135: return $1;
8136: } else {
8137: return;
8138: }
8139: }
8140:
8141: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
8142: # Free bre access to adm and meta resources
8143: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard|viewclasslist|aboutme|ext\.tool)$}))
8144: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
8145: && ($priv eq 'bre')) {
8146: return 'F';
8147: }
8148:
8149: # Free bre access to user's own portfolio contents
8150: my ($space,$domain,$name,@dir)=split('/',$uri);
8151: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
8152: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
8153: my %setters;
8154: my ($startblock,$endblock) =
8155: &Apache::loncommon::blockcheck(\%setters,'port');
8156: if ($startblock && $endblock) {
8157: return 'B';
8158: } else {
8159: return 'F';
8160: }
8161: }
8162:
8163: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
8164: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
8165: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
8166: if (exists($env{'request.course.id'})) {
8167: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8168: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
8169: if (($domain eq $cdom) && ($name eq $cnum)) {
8170: my $courseprivid=$env{'request.course.id'};
8171: $courseprivid=~s/\_/\//;
8172: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
8173: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
8174: return $1;
8175: } else {
8176: if ($env{'request.course.sec'}) {
8177: $courseprivid.='/'.$env{'request.course.sec'};
8178: }
8179: if ($env{'user.priv.'.$env{'request.role'}.'./'.
8180: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
8181: return $2;
8182: }
8183: }
8184: }
8185: }
8186: }
8187:
8188: # Free bre to public access
8189:
8190: if ($priv eq 'bre') {
8191: my $copyright;
8192: unless ($uri =~ /ext\.tool/) {
8193: $copyright=&metadata($uri,'copyright');
8194: }
8195: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
8196: return 'F';
8197: }
8198: if ($copyright eq 'priv') {
8199: $uri=~/([^\/]+)\/([^\/]+)\//;
8200: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
8201: return '';
8202: }
8203: }
8204: if ($copyright eq 'domain') {
8205: $uri=~/([^\/]+)\/([^\/]+)\//;
8206: unless (($env{'user.domain'} eq $1) ||
8207: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
8208: return '';
8209: }
8210: }
8211: if ($env{'request.role'}=~ /li\.\//) {
8212: # Library role, so allow browsing of resources in this domain.
8213: return 'F';
8214: }
8215: if ($copyright eq 'custom') {
8216: unless (&customaccess($priv,$uri)) { return ''; }
8217: }
8218: }
8219: # Domain coordinator is trying to create a course
8220: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
8221: # uri is the requested domain in this case.
8222: # comparison to 'request.role.domain' shows if the user has selected
8223: # a role of dc for the domain in question.
8224: return 'F' if ($uri eq $env{'request.role.domain'});
8225: }
8226:
8227: my $thisallowed='';
8228: my $statecond=0;
8229: my $courseprivid='';
8230:
8231: my $ownaccess;
8232: # Community Coordinator or Assistant Co-author browsing resource space.
8233: if (($priv eq 'bro') && ($env{'user.author'})) {
8234: if ($uri eq '') {
8235: $ownaccess = 1;
8236: } else {
8237: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
8238: my $udom = $env{'user.domain'};
8239: my $uname = $env{'user.name'};
8240: if ($uri =~ m{^\Q$udom\E/?$}) {
8241: $ownaccess = 1;
8242: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
8243: unless ($uri =~ m{\.\./}) {
8244: $ownaccess = 1;
8245: }
8246: } elsif (($udom ne 'public') && ($uname ne 'public')) {
8247: my $now = time;
8248: if ($uri =~ m{^([^/]+)/?$}) {
8249: my $adom = $1;
8250: foreach my $key (keys(%env)) {
8251: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
8252: my ($start,$end) = split(/\./,$env{$key});
8253: if (($now >= $start) && (!$end || $end > $now)) {
8254: $ownaccess = 1;
8255: last;
8256: }
8257: }
8258: }
8259: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
8260: my $adom = $1;
8261: my $aname = $2;
8262: foreach my $role ('ca','aa') {
8263: if ($env{"user.role.$role./$adom/$aname"}) {
8264: my ($start,$end) =
8265: split(/\./,$env{"user.role.$role./$adom/$aname"});
8266: if (($now >= $start) && (!$end || $end > $now)) {
8267: $ownaccess = 1;
8268: last;
8269: }
8270: }
8271: }
8272: }
8273: }
8274: }
8275: }
8276: }
8277:
8278: # Course
8279:
8280: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
8281: unless (($priv eq 'bro') && (!$ownaccess)) {
8282: $thisallowed.=$1;
8283: }
8284: }
8285:
8286: # Domain
8287:
8288: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
8289: =~/\Q$priv\E\&([^\:]*)/) {
8290: unless (($priv eq 'bro') && (!$ownaccess)) {
8291: $thisallowed.=$1;
8292: }
8293: }
8294:
8295: # User who is not author or co-author might still be able to edit
8296: # resource of an author in the domain (e.g., if Domain Coordinator).
8297: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
8298: (&allowed('mdc',$env{'request.course.id'}))) {
8299: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
8300: $thisallowed.=$1;
8301: }
8302: }
8303:
8304: # Course: uri itself is a course
8305: my $courseuri=$uri;
8306: $courseuri=~s/\_(\d)/\/$1/;
8307: $courseuri=~s/^([^\/])/\/$1/;
8308:
8309: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
8310: =~/\Q$priv\E\&([^\:]*)/) {
8311: if ($priv eq 'mip') {
8312: my $rem = $1;
8313: if (($uri ne '') && ($env{'request.course.id'} eq $uri) &&
8314: ($env{'course.'.$env{'request.course.id'}.'.internal.courseowner'} eq $env{'user.name'}.':'.$env{'user.domain'})) {
8315: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8316: if ($cdom ne '') {
8317: my %passwdconf = &get_passwdconf($cdom);
8318: if (ref($passwdconf{'crsownerchg'}) eq 'HASH') {
8319: if (ref($passwdconf{'crsownerchg'}{'by'}) eq 'ARRAY') {
8320: if (@{$passwdconf{'crsownerchg'}{'by'}}) {
8321: my @inststatuses = split(':',$env{'environment.inststatus'});
8322: unless (@inststatuses) {
8323: @inststatuses = ('default');
8324: }
8325: foreach my $status (@inststatuses) {
8326: if (grep(/^\Q$status\E$/,@{$passwdconf{'crsownerchg'}{'by'}})) {
8327: $thisallowed.=$rem;
8328: }
8329: }
8330: }
8331: }
8332: }
8333: }
8334: }
8335: } else {
8336: unless (($priv eq 'bro') && (!$ownaccess)) {
8337: $thisallowed.=$1;
8338: }
8339: }
8340: }
8341:
8342: # URI is an uploaded document for this course, default permissions don't matter
8343: # not allowing 'edit' access (editupload) to uploaded course docs
8344: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
8345: $thisallowed='';
8346: my ($match)=&is_on_map($uri);
8347: if ($match) {
8348: if ($env{'user.priv.'.$env{'request.role'}.'./'}
8349: =~/\Q$priv\E\&([^\:]*)/) {
8350: my $value = $1;
8351: my $deeplinkblock;
8352: unless ($nodeeplinkcheck) {
8353: $deeplinkblock = &deeplink_check($priv,$symb,$uri);
8354: }
8355: if ($deeplinkblock) {
8356: $thisallowed='D';
8357: } elsif ($noblockcheck) {
8358: $thisallowed.=$value;
8359: } else {
8360: my @blockers = &has_comm_blocking($priv,$symb,$uri,$ignorecache);
8361: if (@blockers > 0) {
8362: $thisallowed = 'B';
8363: } else {
8364: $thisallowed.=$value;
8365: }
8366: }
8367: }
8368: } else {
8369: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
8370: if ($refuri) {
8371: if ($refuri =~ m|^/adm/|) {
8372: $thisallowed='F';
8373: } else {
8374: $refuri=&declutter($refuri);
8375: my ($match) = &is_on_map($refuri);
8376: if ($match) {
8377: my $deeplinkblock;
8378: unless ($nodeeplinkcheck) {
8379: $deeplinkblock = &deeplink_check($priv,$symb,$refuri);
8380: }
8381: if ($deeplinkblock) {
8382: $thisallowed='D';
8383: } elsif ($noblockcheck) {
8384: $thisallowed='F';
8385: } else {
8386: my @blockers = &has_comm_blocking($priv,'',$refuri,'',1);
8387: if (@blockers > 0) {
8388: $thisallowed = 'B';
8389: } else {
8390: $thisallowed='F';
8391: }
8392: }
8393: }
8394: }
8395: }
8396: }
8397: }
8398:
8399: if ($priv eq 'bre'
8400: && $thisallowed ne 'F'
8401: && $thisallowed ne '2'
8402: && &is_portfolio_url($uri)) {
8403: $thisallowed = &portfolio_access($uri,$clientip);
8404: }
8405:
8406: # Full access at system, domain or course-wide level? Exit.
8407: if ($thisallowed=~/F/) {
8408: return 'F';
8409: }
8410:
8411: # If this is generating or modifying users, exit with special codes
8412:
8413: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
8414: if (($priv eq 'cca') || ($priv eq 'caa')) {
8415: my ($audom,$auname)=split('/',$uri);
8416: # no author name given, so this just checks on the general right to make a co-author in this domain
8417: unless ($auname) { return $thisallowed; }
8418: # an author name is given, so we are about to actually make a co-author for a certain account
8419: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
8420: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
8421: ($audom ne $env{'request.role.domain'}))) { return ''; }
8422: }
8423: return $thisallowed;
8424: }
8425: #
8426: # Gathered so far: system, domain and course wide privileges
8427: #
8428: # Course: See if uri or referer is an individual resource that is part of
8429: # the course
8430:
8431: if ($env{'request.course.id'}) {
8432:
8433: # If this is modifying password (internal auth) domains must match for user and user's role.
8434:
8435: if ($priv eq 'mip') {
8436: if ($env{'user.domain'} eq $env{'request.role.domain'}) {
8437: return $thisallowed;
8438: } else {
8439: return '';
8440: }
8441: }
8442:
8443: $courseprivid=$env{'request.course.id'};
8444: if ($env{'request.course.sec'}) {
8445: $courseprivid.='/'.$env{'request.course.sec'};
8446: }
8447: $courseprivid=~s/\_/\//;
8448: my $checkreferer=1;
8449: my ($match,$cond)=&is_on_map($uri);
8450: if ($match) {
8451: $statecond=$cond;
8452: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
8453: =~/\Q$priv\E\&([^\:]*)/) {
8454: my $value = $1;
8455: if ($priv eq 'bre') {
8456: my $deeplinkblock;
8457: unless ($nodeeplinkcheck) {
8458: $deeplinkblock = &deeplink_check($priv,$symb,$uri);
8459: }
8460: if ($deeplinkblock) {
8461: $thisallowed = 'D';
8462: } elsif ($noblockcheck) {
8463: $thisallowed.=$value;
8464: } else {
8465: my @blockers = &has_comm_blocking($priv,$symb,$uri,$ignorecache);
8466: if (@blockers > 0) {
8467: $thisallowed = 'B';
8468: } else {
8469: $thisallowed.=$value;
8470: }
8471: }
8472: } else {
8473: $thisallowed.=$value;
8474: }
8475: $checkreferer=0;
8476: }
8477: }
8478:
8479: if ($checkreferer) {
8480: my $refuri=$env{'httpref.'.$orguri};
8481: unless ($refuri) {
8482: foreach my $key (keys(%env)) {
8483: if ($key=~/^httpref\..*\*/) {
8484: my $pattern=$key;
8485: $pattern=~s/^httpref\.\/res\///;
8486: $pattern=~s/\*/\[\^\/\]\+/g;
8487: $pattern=~s/\//\\\//g;
8488: if ($orguri=~/$pattern/) {
8489: $refuri=$env{$key};
8490: }
8491: }
8492: }
8493: }
8494:
8495: if ($refuri) {
8496: $refuri=&declutter($refuri);
8497: my ($match,$cond)=&is_on_map($refuri);
8498: if ($match) {
8499: my $refstatecond=$cond;
8500: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
8501: =~/\Q$priv\E\&([^\:]*)/) {
8502: my $value = $1;
8503: if ($priv eq 'bre') {
8504: my $deeplinkblock;
8505: unless ($nodeeplinkcheck) {
8506: $deeplinkblock = &deeplink_check($priv,$symb,$refuri);
8507: }
8508: if ($deeplinkblock) {
8509: $thisallowed = 'D';
8510: } elsif ($noblockcheck) {
8511: $thisallowed.=$value;
8512: } else {
8513: my @blockers = &has_comm_blocking($priv,'',$refuri,'',1);
8514: if (@blockers > 0) {
8515: $thisallowed = 'B';
8516: } else {
8517: $thisallowed.=$value;
8518: }
8519: }
8520: } else {
8521: $thisallowed.=$value;
8522: }
8523: $uri=$refuri;
8524: $statecond=$refstatecond;
8525: }
8526: }
8527: }
8528: }
8529: }
8530:
8531: #
8532: # Gathered now: all privileges that could apply, and condition number
8533: #
8534: #
8535: # Full or no access?
8536: #
8537:
8538: if ($thisallowed=~/F/) {
8539: return 'F';
8540: }
8541:
8542: unless ($thisallowed) {
8543: return '';
8544: }
8545:
8546: # Restrictions exist, deal with them
8547: #
8548: # C:according to course preferences
8549: # R:according to resource settings
8550: # L:unless locked
8551: # X:according to user session state
8552: #
8553:
8554: # Possibly locked functionality, check all courses
8555: # In roles.tab, L (unless locked) available for bre, pch, plc, pac and sma.
8556: # Locks might take effect only after 10 minutes cache expiration for other
8557: # courses, and 2 minutes for current course, in which user has st or ta role
8558: # which is neither expired nor a future role (unless current course).
8559:
8560: my ($needlockcheck,$now,$crsonly);
8561: if ($thisallowed=~/L/) {
8562: $now = time;
8563: if ($priv eq 'bre') {
8564: if ($uri ne '') {
8565: if ($orguri =~ m{^/+res/}) {
8566: if ($uri =~ m{^lib/templates/}) {
8567: if ($env{'request.course.id'}) {
8568: $crsonly = 1;
8569: $needlockcheck = 1;
8570: }
8571: } else {
8572: $needlockcheck = 1;
8573: }
8574: } elsif ($env{'request.course.id'}) {
8575: my ($crsdom,$crsnum) = split('_',$env{'request.course.id'});
8576: if (($uri =~ m{^(adm|uploaded|public)/$crsdom/$crsnum/}) ||
8577: ($uri =~ m{^adm/$match_domain/$match_username/\d+/(smppg|bulletinboard)$})) {
8578: $crsonly = 1;
8579: }
8580: $needlockcheck = 1;
8581: }
8582: }
8583: } elsif (($priv eq 'pch') || ($priv eq 'plc') || ($priv eq 'pac') || ($priv eq 'sma')) {
8584: $needlockcheck = 1;
8585: }
8586: }
8587: if ($needlockcheck) {
8588: foreach my $envkey (keys(%env)) {
8589: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
8590: my $courseid=$2;
8591: my $roleid=$1.'.'.$2;
8592: $courseid=~s/^\///;
8593: unless ($env{'request.role'} eq $roleid) {
8594: my ($start,$end) = split(/\./,$env{$envkey});
8595: next unless (($now >= $start) && (!$end || $end > $now));
8596: }
8597: my $expiretime=600;
8598: if ($env{'request.role'} eq $roleid) {
8599: $expiretime=120;
8600: }
8601: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
8602: my $prefix='course.'.$cdom.'_'.$cnum.'.';
8603: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
8604: &coursedescription($courseid,{'freshen_cache' => 1});
8605: }
8606: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
8607: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
8608: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
8609: &log($env{'user.domain'},$env{'user.name'},
8610: $env{'user.home'},
8611: 'Locked by res: '.$priv.' for '.$uri.' due to '.
8612: $cdom.'/'.$cnum.'/'.$csec.' expire '.
8613: $env{$prefix.'priv.'.$priv.'.lock.expire'});
8614: return '';
8615: }
8616: }
8617: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
8618: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
8619: if ($env{$prefix.'priv.'.$priv.'.lock.expire'}>time) {
8620: &log($env{'user.domain'},$env{'user.name'},
8621: $env{'user.home'},
8622: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
8623: $cdom.'/'.$cnum.'/'.$csec.' expire '.
8624: $env{$prefix.'priv.'.$priv.'.lock.expire'});
8625: return '';
8626: }
8627: }
8628: }
8629: }
8630: }
8631:
8632: #
8633: # Rest of the restrictions depend on selected course
8634: #
8635:
8636: unless ($env{'request.course.id'}) {
8637: if ($thisallowed eq 'A') {
8638: return 'A';
8639: } elsif ($thisallowed eq 'B') {
8640: return 'B';
8641: } else {
8642: return '1';
8643: }
8644: }
8645:
8646: #
8647: # Now user is definitely in a course
8648: #
8649:
8650:
8651: # Course preferences
8652:
8653: if ($thisallowed=~/C/) {
8654: my $rolecode=(split(/\./,$env{'request.role'}))[0];
8655: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
8656: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
8657: =~/\Q$rolecode\E/) {
8658: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
8659: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
8660: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
8661: $env{'request.course.id'});
8662: }
8663: return '';
8664: }
8665:
8666: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
8667: =~/\Q$unamedom\E/) {
8668: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
8669: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
8670: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
8671: $env{'request.course.id'});
8672: }
8673: return '';
8674: }
8675: }
8676:
8677: # Resource preferences
8678:
8679: if ($thisallowed=~/R/) {
8680: my $rolecode=(split(/\./,$env{'request.role'}))[0];
8681: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
8682: if (($priv ne 'pch') && ($priv ne 'plc')) {
8683: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
8684: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
8685: }
8686: return '';
8687: }
8688: }
8689:
8690: # Restricted for deeplinked session?
8691:
8692: if ($env{'request.deeplink.login'}) {
8693: if ($env{'acc.deeplinkout'} && !$nodeeplinkout) {
8694: if (!$symb) { $symb=&symbread($uri,1); }
8695: if (($symb) && ($env{'acc.deeplinkout'}=~/\&\Q$symb\E\&/)) {
8696: return '';
8697: }
8698: }
8699: }
8700:
8701: # Restricted by state or randomout?
8702:
8703: if ($thisallowed=~/X/) {
8704: if ($env{'acc.randomout'}) {
8705: if (!$symb) { $symb=&symbread($uri,1); }
8706: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
8707: return '';
8708: }
8709: }
8710: if (&condval($statecond)) {
8711: return '2';
8712: } else {
8713: return '';
8714: }
8715: }
8716:
8717: if ($thisallowed eq 'A') {
8718: return 'A';
8719: } elsif ($thisallowed eq 'B') {
8720: return 'B';
8721: } elsif ($thisallowed eq 'D') {
8722: return 'D';
8723: }
8724: return 'F';
8725: }
8726:
8727: # ------------------------------------------- Check construction space access
8728:
8729: sub constructaccess {
8730: my ($url,$setpriv)=@_;
8731:
8732: # We do not allow editing of previous versions of files
8733: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
8734:
8735: # Get username and domain from URL
8736: my ($ownername,$ownerdomain,$ownerhome);
8737:
8738: ($ownerdomain,$ownername) =
8739: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)(?:/daxepage|/daxeopen)?/priv/($match_domain)/($match_username)(?:/|$)});
8740:
8741: # The URL does not really point to any authorspace, forget it
8742: unless (($ownername) && ($ownerdomain)) { return ''; }
8743:
8744: # Now we need to see if the user has access to the authorspace of
8745: # $ownername at $ownerdomain
8746:
8747: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
8748: # Real author for this?
8749: $ownerhome = $env{'user.home'};
8750: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
8751: return ($ownername,$ownerdomain,$ownerhome);
8752: }
8753: } else {
8754: # Co-author for this?
8755: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
8756: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
8757: $ownerhome = &homeserver($ownername,$ownerdomain);
8758: return ($ownername,$ownerdomain,$ownerhome);
8759: }
8760: if ($env{'request.course.id'}) {
8761: if (($ownername eq $env{'course.'.$env{'request.course.id'}.'.num'}) &&
8762: ($ownerdomain eq $env{'course.'.$env{'request.course.id'}.'.domain'})) {
8763: if (&allowed('mdc',$env{'request.course.id'})) {
8764: $ownerhome = $env{'course.'.$env{'request.course.id'}.'.home'};
8765: return ($ownername,$ownerdomain,$ownerhome);
8766: }
8767: }
8768: }
8769: }
8770:
8771: # We don't have any access right now. If we are not possibly going to do anything about this,
8772: # we might as well leave
8773: unless ($setpriv) { return ''; }
8774:
8775: # Backdoor access?
8776: my $allowed=&allowed('eco',$ownerdomain);
8777: # Nope
8778: unless ($allowed) { return ''; }
8779: # Looks like we may have access, but could be locked by the owner of the construction space
8780: if ($allowed eq 'U') {
8781: my %blocked=&get('environment',['domcoord.author'],
8782: $ownerdomain,$ownername);
8783: # Is blocked by owner
8784: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
8785: }
8786: if (($allowed eq 'F') || ($allowed eq 'U')) {
8787: # Grant temporary access
8788: my $then=$env{'user.login.time'};
8789: my $update=$env{'user.update.time'};
8790: if (!$update) { $update = $then; }
8791: my $refresh=$env{'user.refresh.time'};
8792: if (!$refresh) { $refresh = $update; }
8793: my $now = time;
8794: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
8795: $now,'ca','constructaccess');
8796: $ownerhome = &homeserver($ownername,$ownerdomain);
8797: return($ownername,$ownerdomain,$ownerhome);
8798: }
8799: # No business here
8800: return '';
8801: }
8802:
8803: # ----------------------------------------------------------- Content Blocking
8804:
8805: {
8806: # Caches for faster Course Contents display where content blocking
8807: # is in operation (i.e., interval param set) for timed quiz.
8808: #
8809: # User for whom data are being temporarily cached.
8810: my $cacheduser='';
8811: # Course for which data are being temporarily cached.
8812: my $cachedcid='';
8813: # Cached blockers for this user (a hash of blocking items).
8814: my %cachedblockers=();
8815: # When the data were last cached.
8816: my $cachedlast='';
8817:
8818: sub load_all_blockers {
8819: my ($uname,$udom)=@_;
8820: if (($uname ne '') && ($udom ne '')) {
8821: if (($cacheduser eq $uname.':'.$udom) &&
8822: ($cachedcid eq $env{'request.course.id'}) &&
8823: (abs($cachedlast-time)<5)) {
8824: return;
8825: }
8826: }
8827: $cachedlast=time;
8828: $cacheduser=$uname.':'.$udom;
8829: $cachedcid=$env{'request.course.id'};
8830: %cachedblockers = &get_commblock_resources();
8831: return;
8832: }
8833:
8834: sub get_comm_blocks {
8835: my ($cdom,$cnum) = @_;
8836: if ($cdom eq '' || $cnum eq '') {
8837: return unless ($env{'request.course.id'});
8838: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
8839: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8840: }
8841: my %commblocks;
8842: my $hashid=$cdom.'_'.$cnum;
8843: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
8844: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
8845: %commblocks = %{$blocksref};
8846: } else {
8847: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
8848: my $cachetime = 600;
8849: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
8850: }
8851: return %commblocks;
8852: }
8853:
8854: sub get_commblock_resources {
8855: my ($blocks) = @_;
8856: my %blockers = ();
8857: return %blockers unless ($env{'request.course.id'});
8858: return %blockers if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
8859: my %commblocks;
8860: if (ref($blocks) eq 'HASH') {
8861: %commblocks = %{$blocks};
8862: } else {
8863: %commblocks = &get_comm_blocks();
8864: }
8865: return %blockers unless (keys(%commblocks) > 0);
8866: my $navmap = Apache::lonnavmaps::navmap->new();
8867: return %blockers unless (ref($navmap));
8868: my $now = time;
8869: foreach my $block (keys(%commblocks)) {
8870: if ($block =~ /^(\d+)____(\d+)$/) {
8871: my ($start,$end) = ($1,$2);
8872: if ($start <= $now && $end >= $now) {
8873: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
8874: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
8875: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
8876: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
8877: $blockers{$block}{maps} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
8878: }
8879: }
8880: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
8881: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
8882: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
8883: }
8884: }
8885: }
8886: }
8887: }
8888: } elsif ($block =~ /^firstaccess____(.+)$/) {
8889: my $item = $1;
8890: my @to_test;
8891: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
8892: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
8893: my @interval;
8894: my $type = 'map';
8895: if ($item eq 'course') {
8896: $type = 'course';
8897: @interval=&EXT("resource.0.interval");
8898: } else {
8899: if ($item =~ /___\d+___/) {
8900: $type = 'resource';
8901: @interval=&EXT("resource.0.interval",$item);
8902: if (ref($navmap)) {
8903: my $res = $navmap->getBySymb($item);
8904: push(@to_test,$res);
8905: }
8906: } else {
8907: my $mapsymb = &symbread($item,1);
8908: if ($mapsymb) {
8909: if (ref($navmap)) {
8910: my $mapres = $navmap->getBySymb($mapsymb);
8911: if (ref($mapres)) {
8912: my $first = $mapres->map_start();
8913: my $finish = $mapres->map_finish();
8914: my $it = $navmap->getIterator($first,$finish,undef,0,0);
8915: if (ref($it)) {
8916: my $res;
8917: while ($res = $it->next(undef,1)) {
8918: next unless (ref($res));
8919: my $symb = $res->symb();
8920: next if (($symb eq $mapsymb) || ($symb eq ''));
8921: @interval=&EXT("resource.0.interval",$symb);
8922: if ($interval[1] eq 'map') {
8923: if ($res->answerable()) {
8924: push(@to_test,$res);
8925: last;
8926: }
8927: }
8928: }
8929: }
8930: }
8931: }
8932: }
8933: }
8934: }
8935: if ($interval[0] =~ /^(\d+)/) {
8936: my $timelimit = $1;
8937: my $first_access;
8938: if ($type eq 'resource') {
8939: $first_access=&get_first_access($interval[1],$item);
8940: } elsif ($type eq 'map') {
8941: $first_access=&get_first_access($interval[1],undef,$item);
8942: } else {
8943: $first_access=&get_first_access($interval[1]);
8944: }
8945: if ($first_access) {
8946: my $timesup = $first_access+$timelimit;
8947: if ($timesup > $now) {
8948: my $activeblock;
8949: foreach my $res (@to_test) {
8950: if ($res->answerable()) {
8951: $activeblock = 1;
8952: last;
8953: }
8954: }
8955: if ($activeblock) {
8956: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
8957: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
8958: $blockers{$block}{'maps'} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
8959: }
8960: }
8961: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
8962: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
8963: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
8964: }
8965: }
8966: }
8967: }
8968: }
8969: }
8970: }
8971: }
8972: }
8973: }
8974: return %blockers;
8975: }
8976:
8977: sub has_comm_blocking {
8978: my ($priv,$symb,$uri,$ignoresymbdb,$noenccheck,$blocked,$blocks) = @_;
8979: my @blockers;
8980: return unless ($env{'request.course.id'});
8981: return unless ($priv eq 'bre');
8982: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
8983: return if ($env{'request.state'} eq 'construct');
8984: my %blockinfo;
8985: if (ref($blocks) eq 'HASH') {
8986: %blockinfo = &get_commblock_resources($blocks);
8987: } else {
8988: &load_all_blockers($env{'user.name'},$env{'user.domain'});
8989: %blockinfo = %cachedblockers;
8990: }
8991: return unless (keys(%blockinfo) > 0);
8992: my (%possibles,@symbs);
8993: if (!$symb) {
8994: $symb = &symbread($uri,1,1,1,\%possibles,$ignoresymbdb,$noenccheck);
8995: }
8996: if ($symb) {
8997: @symbs = ($symb);
8998: } elsif (keys(%possibles)) {
8999: @symbs = keys(%possibles);
9000: }
9001: my $noblock;
9002: foreach my $symb (@symbs) {
9003: last if ($noblock);
9004: my ($map,$resid,$resurl)=&decode_symb($symb);
9005: foreach my $block (keys(%blockinfo)) {
9006: if ($block =~ /^firstaccess____(.+)$/) {
9007: my $item = $1;
9008: unless ($blocked) {
9009: if (($item eq $map) || ($item eq $symb)) {
9010: $noblock = 1;
9011: last;
9012: }
9013: }
9014: }
9015: if (ref($blockinfo{$block}) eq 'HASH') {
9016: if (ref($blockinfo{$block}{'resources'}) eq 'HASH') {
9017: if ($blockinfo{$block}{'resources'}{$symb}) {
9018: unless (grep(/^\Q$block\E$/,@blockers)) {
9019: push(@blockers,$block);
9020: }
9021: }
9022: }
9023: if (ref($blockinfo{$block}{'maps'}) eq 'HASH') {
9024: if ($blockinfo{$block}{'maps'}{$map}) {
9025: unless (grep(/^\Q$block\E$/,@blockers)) {
9026: push(@blockers,$block);
9027: }
9028: }
9029: }
9030: }
9031: }
9032: }
9033: unless ($noblock) {
9034: return @blockers;
9035: }
9036: return;
9037: }
9038: }
9039:
9040: sub deeplink_check {
9041: my ($priv,$symb,$uri) = @_;
9042: return unless ($env{'request.course.id'});
9043: return unless ($priv eq 'bre');
9044: return if ($env{'request.state'} eq 'construct');
9045: return if ($env{'request.role.adv'});
9046: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
9047: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
9048: my (%possibles,@symbs);
9049: if (!$symb) {
9050: $symb = &symbread($uri,1,1,1,\%possibles);
9051: }
9052: if ($symb) {
9053: @symbs = ($symb);
9054: } elsif (keys(%possibles)) {
9055: @symbs = keys(%possibles);
9056: }
9057:
9058: my ($deeplink_symb,$allow);
9059: if ($env{'request.deeplink.login'}) {
9060: $deeplink_symb = &Apache::loncommon::deeplink_login_symb($cnum,$cdom);
9061: }
9062: foreach my $symb (@symbs) {
9063: last if ($allow);
9064: my $deeplink = &EXT("resource.0.deeplink",$symb);
9065: if ($deeplink eq '') {
9066: $allow = 1;
9067: } else {
9068: my ($state,$others,$listed,$scope,$protect) = split(/,/,$deeplink);
9069: if ($state ne 'only') {
9070: $allow = 1;
9071: } else {
9072: my $check_deeplink_entry;
9073: if ($protect ne 'none') {
9074: my ($acctype,$item) = split(/:/,$protect);
9075: if (($acctype eq 'ltic') && ($env{'user.linkprotector'})) {
9076: if (grep(/^\Q$item\Ec$/,split(/,/,$env{'user.linkprotector'}))) {
9077: $check_deeplink_entry = 1
9078: }
9079: } elsif (($acctype eq 'ltid') && ($env{'user.linkprotector'})) {
9080: if (grep(/^\Q$item\Ed$/,split(/,/,$env{'user.linkprotector'}))) {
9081: $check_deeplink_entry = 1;
9082: }
9083: } elsif (($acctype eq 'key') && ($env{'user.deeplinkkey'})) {
9084: if (grep(/^\Q$item\E$/,split(/,/,$env{'user.deeplinkkey'}))) {
9085: $check_deeplink_entry = 1;
9086: }
9087: }
9088: }
9089: if (($protect eq 'none') || ($check_deeplink_entry)) {
9090: if ($scope eq 'res') {
9091: if ($symb eq $deeplink_symb) {
9092: $allow = 1;
9093: }
9094: } elsif (($scope eq 'map') || ($scope eq 'rec')) {
9095: my ($map_from_symb,$map_from_login);
9096: $map_from_symb = &deversion((&decode_symb($symb))[0]);
9097: if ($deeplink_symb =~ /\.(page|sequence)$/) {
9098: $map_from_login = &deversion((&decode_symb($deeplink_symb))[2]);
9099: } else {
9100: $map_from_login = &deversion((&decode_symb($deeplink_symb))[0]);
9101: }
9102: if (($map_from_symb) && ($map_from_login)) {
9103: if ($map_from_symb eq $map_from_login) {
9104: $allow = 1;
9105: } elsif ($scope eq 'rec') {
9106: my @recurseup = &get_map_hierarchy($map_from_symb,$env{'request.course.id'});
9107: if (grep(/^\Q$map_from_login\E$/,@recurseup)) {
9108: $allow = 1;
9109: }
9110: }
9111: }
9112: }
9113: }
9114: }
9115: }
9116: }
9117: return if ($allow);
9118: return 1;
9119: }
9120:
9121: # -------------------------------- Deversion and split uri into path an filename
9122:
9123: #
9124: # Removes the version from a URI and
9125: # splits it in to its filename and path to the filename.
9126: # Seems like File::Basename could have done this more clearly.
9127: # Parameters:
9128: # $uri - input URI
9129: # Returns:
9130: # Two element list consisting of
9131: # $pathname - the URI up to and excluding the trailing /
9132: # $filename - The part of the URI following the last /
9133: # NOTE:
9134: # Another realization of this is simply:
9135: # use File::Basename;
9136: # ...
9137: # $uri = shift;
9138: # $filename = basename($uri);
9139: # $path = dirname($uri);
9140: # return ($filename, $path);
9141: #
9142: # The implementation below is probably faster however.
9143: #
9144: sub split_uri_for_cond {
9145: my $uri=&deversion(&declutter(shift));
9146: my @uriparts=split(/\//,$uri);
9147: my $filename=pop(@uriparts);
9148: my $pathname=join('/',@uriparts);
9149: return ($pathname,$filename);
9150: }
9151: # --------------------------------------------------- Is a resource on the map?
9152:
9153: sub is_on_map {
9154: my ($pathname,$filename) = &split_uri_for_cond(shift);
9155: #Trying to find the conditional for the file
9156: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
9157: /\&\Q$filename\E\:([\d\|]+)\&/);
9158: if ($match) {
9159: return (1,$1);
9160: } else {
9161: return (0,0);
9162: }
9163: }
9164:
9165: # --------------------------------------------------------- Get symb from alias
9166:
9167: sub get_symb_from_alias {
9168: my $symb=shift;
9169: my ($map,$resid,$url)=&decode_symb($symb);
9170: # Already is a symb
9171: if ($url) { return $symb; }
9172: # Must be an alias
9173: my $aliassymb='';
9174: my %bighash;
9175: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
9176: &GDBM_READER(),0640)) {
9177: my $rid=$bighash{'mapalias_'.$symb};
9178: if ($rid) {
9179: my ($mapid,$resid)=split(/\./,$rid);
9180: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
9181: $resid,$bighash{'src_'.$rid});
9182: }
9183: untie %bighash;
9184: }
9185: return $aliassymb;
9186: }
9187:
9188: # ----------------------------------------------------------------- Define Role
9189:
9190: sub definerole {
9191: if (allowed('mcr','/')) {
9192: my ($rolename,$sysrole,$domrole,$courole,$uname,$udom)=@_;
9193: foreach my $role (split(':',$sysrole)) {
9194: my ($crole,$cqual)=split(/\&/,$role);
9195: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
9196: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
9197: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
9198: return "refused:s:$crole&$cqual";
9199: }
9200: }
9201: }
9202: foreach my $role (split(':',$domrole)) {
9203: my ($crole,$cqual)=split(/\&/,$role);
9204: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
9205: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
9206: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
9207: return "refused:d:$crole&$cqual";
9208: }
9209: }
9210: }
9211: foreach my $role (split(':',$courole)) {
9212: my ($crole,$cqual)=split(/\&/,$role);
9213: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
9214: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
9215: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
9216: return "refused:c:$crole&$cqual";
9217: }
9218: }
9219: }
9220: my $uhome;
9221: if (($uname ne '') && ($udom ne '')) {
9222: $uhome = &homeserver($uname,$udom);
9223: return $uhome if ($uhome eq 'no_host');
9224: } else {
9225: $uname = $env{'user.name'};
9226: $udom = $env{'user.domain'};
9227: $uhome = $env{'user.home'};
9228: }
9229: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
9230: "$udom:$uname:rolesdef_$rolename=".
9231: escape($sysrole.'_'.$domrole.'_'.$courole);
9232: return reply($command,$uhome);
9233: } else {
9234: return 'refused';
9235: }
9236: }
9237:
9238: # ---------------- Make a metadata query against the network of library servers
9239:
9240: sub metadata_query {
9241: my ($query,$custom,$customshow,$server_array,$domains_hash)=@_;
9242: my %rhash;
9243: my %libserv = &all_library();
9244: my @server_list = (defined($server_array) ? @$server_array
9245: : keys(%libserv) );
9246: for my $server (@server_list) {
9247: my $domains = '';
9248: if (ref($domains_hash) eq 'HASH') {
9249: $domains = $domains_hash->{$server};
9250: }
9251: unless ($custom or $customshow) {
9252: my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server);
9253: $rhash{$server}=$reply;
9254: }
9255: else {
9256: my $reply=&reply("querysend:".&escape($query).':'.
9257: &escape($custom).':'.&escape($customshow).':'.&escape($domains),
9258: $server);
9259: $rhash{$server}=$reply;
9260: }
9261: }
9262: return \%rhash;
9263: }
9264:
9265: # ----------------------------------------- Send log queries and wait for reply
9266:
9267: sub log_query {
9268: my ($uname,$udom,$query,%filters)=@_;
9269: my $uhome=&homeserver($uname,$udom);
9270: if ($uhome eq 'no_host') { return 'error: no_host'; }
9271: my $uhost=&hostname($uhome);
9272: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
9273: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
9274: $uhome);
9275: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
9276: return get_query_reply($queryid);
9277: }
9278:
9279: # -------------------------- Update MySQL table for portfolio file
9280:
9281: sub update_portfolio_table {
9282: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
9283: if ($group ne '') {
9284: $file_name =~s /^\Q$group\E//;
9285: }
9286: my $homeserver = &homeserver($uname,$udom);
9287: my $queryid=
9288: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
9289: ':'.&escape($file_name).':'.$action,$homeserver);
9290: my $reply = &get_query_reply($queryid);
9291: return $reply;
9292: }
9293:
9294: # -------------------------- Update MySQL allusers table
9295:
9296: sub update_allusers_table {
9297: my ($uname,$udom,$names) = @_;
9298: my $homeserver = &homeserver($uname,$udom);
9299: my $queryid=
9300: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
9301: 'lastname='.&escape($names->{'lastname'}).'%%'.
9302: 'firstname='.&escape($names->{'firstname'}).'%%'.
9303: 'middlename='.&escape($names->{'middlename'}).'%%'.
9304: 'generation='.&escape($names->{'generation'}).'%%'.
9305: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
9306: 'id='.&escape($names->{'id'}),$homeserver);
9307: return;
9308: }
9309:
9310: # ------- Request retrieval of institutional classlists for course(s)
9311:
9312: sub fetch_enrollment_query {
9313: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
9314: my ($homeserver,$sleep,$loopmax);
9315: my $maxtries = 1;
9316: if ($context eq 'automated') {
9317: $homeserver = $perlvar{'lonHostID'};
9318: $sleep = 2;
9319: $loopmax = 100;
9320: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
9321: } else {
9322: $homeserver = &homeserver($cnum,$dom);
9323: }
9324: my $host=&hostname($homeserver);
9325: my $cmd = '';
9326: foreach my $affiliate (keys(%{$affiliatesref})) {
9327: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
9328: }
9329: $cmd =~ s/%%$//;
9330: $cmd = &escape($cmd);
9331: my $query = 'fetchenrollment';
9332: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
9333: unless ($queryid=~/^\Q$host\E\_/) {
9334: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
9335: return 'error: '.$queryid;
9336: }
9337: my $reply = &get_query_reply($queryid,$sleep,$loopmax);
9338: my $tries = 1;
9339: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
9340: $reply = &get_query_reply($queryid,$sleep,$loopmax);
9341: $tries ++;
9342: }
9343: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
9344: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
9345: } else {
9346: my @responses = split(/:/,$reply);
9347: if (grep { $_ eq $homeserver } ¤t_machine_ids()) {
9348: foreach my $line (@responses) {
9349: my ($key,$value) = split(/=/,$line,2);
9350: $$replyref{$key} = $value;
9351: }
9352: } else {
9353: my $pathname = LONCAPA::tempdir();
9354: foreach my $line (@responses) {
9355: my ($key,$value) = split(/=/,$line);
9356: $$replyref{$key} = $value;
9357: if ($value > 0) {
9358: foreach my $item (@{$$affiliatesref{$key}}) {
9359: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
9360: my $destname = $pathname.'/'.$filename;
9361: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
9362: if ($xml_classlist =~ /^error/) {
9363: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
9364: } else {
9365: if ( open(FILE,">",$destname) ) {
9366: print FILE &unescape($xml_classlist);
9367: close(FILE);
9368: } else {
9369: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
9370: }
9371: }
9372: }
9373: }
9374: }
9375: }
9376: return 'ok';
9377: }
9378: return 'error';
9379: }
9380:
9381: sub get_query_reply {
9382: my ($queryid,$sleep,$loopmax) = @_;;
9383: if (($sleep eq '') || ($sleep !~ /^\d+\.?\d*$/)) {
9384: $sleep = 0.2;
9385: }
9386: if (($loopmax eq '') || ($loopmax =~ /\D/)) {
9387: $loopmax = 100;
9388: }
9389: my $replyfile=LONCAPA::tempdir().$queryid;
9390: my $reply='';
9391: for (1..$loopmax) {
9392: sleep($sleep);
9393: if (-e $replyfile.'.end') {
9394: if (open(my $fh,"<",$replyfile)) {
9395: $reply = join('',<$fh>);
9396: close($fh);
9397: } else { return 'error: reply_file_error'; }
9398: return &unescape($reply);
9399: }
9400: }
9401: return 'timeout:'.$queryid;
9402: }
9403:
9404: sub courselog_query {
9405: #
9406: # possible filters:
9407: # url: url or symb
9408: # username
9409: # domain
9410: # action: view, submit, grade
9411: # start: timestamp
9412: # end: timestamp
9413: #
9414: my (%filters)=@_;
9415: unless ($env{'request.course.id'}) { return 'no_course'; }
9416: if ($filters{'url'}) {
9417: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
9418: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
9419: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
9420: }
9421: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
9422: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
9423: return &log_query($cname,$cdom,'courselog',%filters);
9424: }
9425:
9426: sub userlog_query {
9427: #
9428: # possible filters:
9429: # action: log check role
9430: # start: timestamp
9431: # end: timestamp
9432: #
9433: my ($uname,$udom,%filters)=@_;
9434: return &log_query($uname,$udom,'userlog',%filters);
9435: }
9436:
9437: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
9438:
9439: sub auto_run {
9440: my ($cnum,$cdom) = @_;
9441: my $response = 0;
9442: my $settings;
9443: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
9444: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
9445: $settings = $domconfig{'autoenroll'};
9446: if ($settings->{'run'} eq '1') {
9447: $response = 1;
9448: }
9449: } else {
9450: my $homeserver;
9451: if (&is_course($cdom,$cnum)) {
9452: $homeserver = &homeserver($cnum,$cdom);
9453: } else {
9454: $homeserver = &domain($cdom,'primary');
9455: }
9456: if ($homeserver ne 'no_host') {
9457: $response = &reply('autorun:'.$cdom,$homeserver);
9458: }
9459: }
9460: return $response;
9461: }
9462:
9463: sub auto_get_sections {
9464: my ($cnum,$cdom,$inst_coursecode) = @_;
9465: my $homeserver;
9466: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9467: $homeserver = &homeserver($cnum,$cdom);
9468: }
9469: if (!defined($homeserver)) {
9470: if ($cdom =~ /^$match_domain$/) {
9471: $homeserver = &domain($cdom,'primary');
9472: }
9473: }
9474: my @secs;
9475: if (defined($homeserver)) {
9476: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
9477: unless ($response eq 'refused') {
9478: @secs = split(/:/,$response);
9479: }
9480: }
9481: return @secs;
9482: }
9483:
9484: sub auto_new_course {
9485: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
9486: my $homeserver = &homeserver($cnum,$cdom);
9487: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
9488: return $response;
9489: }
9490:
9491: sub auto_validate_courseID {
9492: my ($cnum,$cdom,$inst_course_id) = @_;
9493: my $homeserver = &homeserver($cnum,$cdom);
9494: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
9495: return $response;
9496: }
9497:
9498: sub auto_validate_instcode {
9499: my ($cnum,$cdom,$instcode,$owner) = @_;
9500: my ($homeserver,$response);
9501: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9502: $homeserver = &homeserver($cnum,$cdom);
9503: }
9504: if (!defined($homeserver)) {
9505: if ($cdom =~ /^$match_domain$/) {
9506: $homeserver = &domain($cdom,'primary');
9507: }
9508: }
9509: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
9510: &escape($instcode).':'.&escape($owner),$homeserver));
9511: my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
9512: return ($outcome,$description,$defaultcredits);
9513: }
9514:
9515: sub auto_validate_inst_crosslist {
9516: my ($cnum,$cdom,$instcode,$inst_xlist,$coowner) = @_;
9517: my ($homeserver,$response);
9518: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9519: $homeserver = &homeserver($cnum,$cdom);
9520: }
9521: if (!defined($homeserver)) {
9522: if ($cdom =~ /^$match_domain$/) {
9523: $homeserver = &domain($cdom,'primary');
9524: }
9525: }
9526: unless (($homeserver eq '') || ($homeserver eq 'no_host')) {
9527: $response=&reply('autovalidateinstcrosslist:'.$cdom.':'.
9528: &escape($instcode).':'.&escape($inst_xlist).':'.
9529: &escape($coowner),$homeserver);
9530: }
9531: return $response;
9532: }
9533:
9534: sub auto_create_password {
9535: my ($cnum,$cdom,$authparam,$udom) = @_;
9536: my ($homeserver,$response);
9537: my $create_passwd = 0;
9538: my $authchk = '';
9539: if ($udom =~ /^$match_domain$/) {
9540: $homeserver = &domain($udom,'primary');
9541: }
9542: if ($homeserver eq '') {
9543: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9544: $homeserver = &homeserver($cnum,$cdom);
9545: }
9546: }
9547: if ($homeserver eq '') {
9548: $authchk = 'nodomain';
9549: } else {
9550: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
9551: if ($response eq 'refused') {
9552: $authchk = 'refused';
9553: } else {
9554: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
9555: }
9556: }
9557: return ($authparam,$create_passwd,$authchk);
9558: }
9559:
9560: sub auto_photo_permission {
9561: my ($cnum,$cdom,$students) = @_;
9562: my $homeserver = &homeserver($cnum,$cdom);
9563: my ($outcome,$perm_reqd,$conditions) =
9564: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
9565: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
9566: return (undef,undef);
9567: }
9568: return ($outcome,$perm_reqd,$conditions);
9569: }
9570:
9571: sub auto_checkphotos {
9572: my ($uname,$udom,$pid) = @_;
9573: my $homeserver = &homeserver($uname,$udom);
9574: my ($result,$resulttype);
9575: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
9576: &escape($uname).':'.&escape($pid),
9577: $homeserver));
9578: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
9579: return (undef,undef);
9580: }
9581: if ($outcome) {
9582: ($result,$resulttype) = split(/:/,$outcome);
9583: }
9584: return ($result,$resulttype);
9585: }
9586:
9587: sub auto_photochoice {
9588: my ($cnum,$cdom) = @_;
9589: my $homeserver = &homeserver($cnum,$cdom);
9590: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
9591: &escape($cdom),
9592: $homeserver)));
9593: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
9594: return (undef,undef);
9595: }
9596: return ($update,$comment);
9597: }
9598:
9599: sub auto_photoupdate {
9600: my ($affiliatesref,$dom,$cnum,$photo) = @_;
9601: my $homeserver = &homeserver($cnum,$dom);
9602: my $host=&hostname($homeserver);
9603: my $cmd = '';
9604: my $maxtries = 1;
9605: foreach my $affiliate (keys(%{$affiliatesref})) {
9606: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
9607: }
9608: $cmd =~ s/%%$//;
9609: $cmd = &escape($cmd);
9610: my $query = 'institutionalphotos';
9611: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
9612: unless ($queryid=~/^\Q$host\E\_/) {
9613: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
9614: return 'error: '.$queryid;
9615: }
9616: my $reply = &get_query_reply($queryid);
9617: my $tries = 1;
9618: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
9619: $reply = &get_query_reply($queryid);
9620: $tries ++;
9621: }
9622: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
9623: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
9624: } else {
9625: my @responses = split(/:/,$reply);
9626: my $outcome = shift(@responses);
9627: foreach my $item (@responses) {
9628: my ($key,$value) = split(/=/,$item);
9629: $$photo{$key} = $value;
9630: }
9631: return $outcome;
9632: }
9633: return 'error';
9634: }
9635:
9636: sub auto_instcode_format {
9637: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
9638: $cat_order) = @_;
9639: my $courses = '';
9640: my @homeservers;
9641: if ($caller eq 'global') {
9642: my %servers = &get_servers($codedom,'library');
9643: foreach my $tryserver (keys(%servers)) {
9644: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
9645: push(@homeservers,$tryserver);
9646: }
9647: }
9648: } elsif ($caller eq 'requests') {
9649: if ($codedom =~ /^$match_domain$/) {
9650: my $chome = &domain($codedom,'primary');
9651: unless ($chome eq 'no_host') {
9652: push(@homeservers,$chome);
9653: }
9654: }
9655: } else {
9656: push(@homeservers,&homeserver($caller,$codedom));
9657: }
9658: foreach my $code (keys(%{$instcodes})) {
9659: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
9660: }
9661: chop($courses);
9662: my $ok_response = 0;
9663: my $response;
9664: while (@homeservers > 0 && $ok_response == 0) {
9665: my $server = shift(@homeservers);
9666: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
9667: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
9668: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
9669: split(/:/,$response);
9670: %{$codes} = (%{$codes},&str2hash($codes_str));
9671: push(@{$codetitles},&str2array($codetitles_str));
9672: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
9673: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
9674: $ok_response = 1;
9675: }
9676: }
9677: if ($ok_response) {
9678: return 'ok';
9679: } else {
9680: return $response;
9681: }
9682: }
9683:
9684: sub auto_instcode_defaults {
9685: my ($domain,$returnhash,$code_order) = @_;
9686: my @homeservers;
9687:
9688: my %servers = &get_servers($domain,'library');
9689: foreach my $tryserver (keys(%servers)) {
9690: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
9691: push(@homeservers,$tryserver);
9692: }
9693: }
9694:
9695: my $response;
9696: foreach my $server (@homeservers) {
9697: $response=&reply('autoinstcodedefaults:'.$domain,$server);
9698: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
9699:
9700: foreach my $pair (split(/\&/,$response)) {
9701: my ($name,$value)=split(/\=/,$pair);
9702: if ($name eq 'code_order') {
9703: @{$code_order} = split(/\&/,&unescape($value));
9704: } else {
9705: $returnhash->{&unescape($name)}=&unescape($value);
9706: }
9707: }
9708: return 'ok';
9709: }
9710:
9711: return $response;
9712: }
9713:
9714: sub auto_possible_instcodes {
9715: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
9716: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
9717: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
9718: return;
9719: }
9720: my (@homeservers,$uhome);
9721: if (defined(&domain($domain,'primary'))) {
9722: $uhome=&domain($domain,'primary');
9723: push(@homeservers,&domain($domain,'primary'));
9724: } else {
9725: my %servers = &get_servers($domain,'library');
9726: foreach my $tryserver (keys(%servers)) {
9727: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
9728: push(@homeservers,$tryserver);
9729: }
9730: }
9731: }
9732: my $response;
9733: foreach my $server (@homeservers) {
9734: $response=&reply('autopossibleinstcodes:'.$domain,$server);
9735: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
9736: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
9737: split(':',$response);
9738: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
9739: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
9740: foreach my $item (split('&',$cat_title)) {
9741: my ($name,$value)=split('=',$item);
9742: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
9743: }
9744: foreach my $item (split('&',$cat_order)) {
9745: my ($name,$value)=split('=',$item);
9746: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
9747: }
9748: return 'ok';
9749: }
9750: return $response;
9751: }
9752:
9753: sub auto_courserequest_checks {
9754: my ($dom) = @_;
9755: my ($homeserver,%validations);
9756: if ($dom =~ /^$match_domain$/) {
9757: $homeserver = &domain($dom,'primary');
9758: }
9759: unless ($homeserver eq 'no_host') {
9760: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
9761: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9762: my @items = split(/&/,$response);
9763: foreach my $item (@items) {
9764: my ($key,$value) = split('=',$item);
9765: $validations{&unescape($key)} = &thaw_unescape($value);
9766: }
9767: }
9768: }
9769: return %validations;
9770: }
9771:
9772: sub auto_courserequest_validation {
9773: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$custominfo) = @_;
9774: my ($homeserver,$response);
9775: if ($dom =~ /^$match_domain$/) {
9776: $homeserver = &domain($dom,'primary');
9777: }
9778: unless ($homeserver eq 'no_host') {
9779: my $customdata;
9780: if (ref($custominfo) eq 'HASH') {
9781: $customdata = &freeze_escape($custominfo);
9782: }
9783: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
9784: ':'.&escape($crstype).':'.&escape($inststatuslist).
9785: ':'.&escape($instcode).':'.&escape($instseclist).':'.
9786: $customdata,$homeserver));
9787: }
9788: return $response;
9789: }
9790:
9791: sub auto_validate_class_sec {
9792: my ($cdom,$cnum,$owners,$inst_class) = @_;
9793: my $homeserver = &homeserver($cnum,$cdom);
9794: my $ownerlist;
9795: if (ref($owners) eq 'ARRAY') {
9796: $ownerlist = join(',',@{$owners});
9797: } else {
9798: $ownerlist = $owners;
9799: }
9800: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
9801: &escape($ownerlist).':'.$cdom,$homeserver);
9802: return $response;
9803: }
9804:
9805: sub auto_instsec_reformat {
9806: my ($cdom,$action,$instsecref) = @_;
9807: return unless(($action eq 'clutter') || ($action eq 'declutter'));
9808: my @homeservers;
9809: if (defined(&domain($cdom,'primary'))) {
9810: push(@homeservers,&domain($cdom,'primary'));
9811: } else {
9812: my %servers = &get_servers($cdom,'library');
9813: foreach my $tryserver (keys(%servers)) {
9814: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
9815: push(@homeservers,$tryserver);
9816: }
9817: }
9818: }
9819: my $response;
9820: my %reformatted = %{$instsecref};
9821: foreach my $server (@homeservers) {
9822: if (ref($instsecref) eq 'HASH') {
9823: my $info = &freeze_escape($instsecref);
9824: my $response=&reply('autoinstsecreformat:'.$cdom.':'.
9825: $action.':'.$info,$server);
9826: next if ($response =~ /(con_lost|error|no_such_host|refused|unknown_command)/);
9827: my @items = split(/&/,$response);
9828: foreach my $item (@items) {
9829: my ($key,$value) = split(/=/,$item);
9830: $reformatted{&unescape($key)} = &thaw_unescape($value);
9831: }
9832: }
9833: }
9834: return %reformatted;
9835: }
9836:
9837: sub auto_validate_instclasses {
9838: my ($cdom,$cnum,$owners,$classesref) = @_;
9839: my ($homeserver,%validations);
9840: $homeserver = &homeserver($cnum,$cdom);
9841: unless ($homeserver eq 'no_host') {
9842: my $ownerlist;
9843: if (ref($owners) eq 'ARRAY') {
9844: $ownerlist = join(',',@{$owners});
9845: } else {
9846: $ownerlist = $owners;
9847: }
9848: if (ref($classesref) eq 'HASH') {
9849: my $classes = &freeze_escape($classesref);
9850: my $response=&reply('autovalidateinstclasses:'.&escape($ownerlist).
9851: ':'.$cdom.':'.$classes,$homeserver);
9852: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9853: my @items = split(/&/,$response);
9854: foreach my $item (@items) {
9855: my ($key,$value) = split('=',$item);
9856: $validations{&unescape($key)} = &thaw_unescape($value);
9857: }
9858: }
9859: }
9860: }
9861: return %validations;
9862: }
9863:
9864: sub auto_crsreq_update {
9865: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,
9866: $code,$accessstart,$accessend,$inbound) = @_;
9867: my ($homeserver,%crsreqresponse);
9868: if ($cdom =~ /^$match_domain$/) {
9869: $homeserver = &domain($cdom,'primary');
9870: }
9871: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
9872: my $info;
9873: if (ref($inbound) eq 'HASH') {
9874: $info = &freeze_escape($inbound);
9875: }
9876: my $response=&reply('autocrsrequpdate:'.$cdom.':'.$cnum.':'.&escape($crstype).
9877: ':'.&escape($action).':'.&escape($ownername).':'.
9878: &escape($ownerdomain).':'.&escape($fullname).':'.
9879: &escape($title).':'.&escape($code).':'.
9880: &escape($accessstart).':'.&escape($accessend).':'.$info,
9881: $homeserver);
9882: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9883: my @items = split(/&/,$response);
9884: foreach my $item (@items) {
9885: my ($key,$value) = split('=',$item);
9886: $crsreqresponse{&unescape($key)} = &thaw_unescape($value);
9887: }
9888: }
9889: }
9890: return \%crsreqresponse;
9891: }
9892:
9893: sub auto_export_grades {
9894: my ($cdom,$cnum,$inforef,$gradesref) = @_;
9895: my ($homeserver,%exportresponse);
9896: if ($cdom =~ /^$match_domain$/) {
9897: $homeserver = &domain($cdom,'primary');
9898: }
9899: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
9900: my $info;
9901: if (ref($inforef) eq 'HASH') {
9902: $info = &freeze_escape($inforef);
9903: }
9904: if (ref($gradesref) eq 'HASH') {
9905: my $grades = &freeze_escape($gradesref);
9906: my $response=&reply('encrypt:autoexportgrades:'.$cdom.':'.$cnum.':'.
9907: $info.':'.$grades,$homeserver);
9908: unless ($response =~ /(con_lost|error|no_such_host|refused|unknown_command)/) {
9909: my @items = split(/&/,$response);
9910: foreach my $item (@items) {
9911: my ($key,$value) = split('=',$item);
9912: $exportresponse{&unescape($key)} = &thaw_unescape($value);
9913: }
9914: }
9915: }
9916: }
9917: return \%exportresponse;
9918: }
9919:
9920: sub check_instcode_cloning {
9921: my ($codedefaults,$code_order,$cloner,$clonefromcode,$clonetocode) = @_;
9922: unless ((ref($codedefaults) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
9923: return;
9924: }
9925: my $canclone;
9926: if (@{$code_order} > 0) {
9927: my $instcoderegexp ='^';
9928: my @clonecodes = split(/\&/,$cloner);
9929: foreach my $item (@{$code_order}) {
9930: if (grep(/^\Q$item\E=/,@clonecodes)) {
9931: foreach my $pair (@clonecodes) {
9932: my ($key,$val) = split(/\=/,$pair,2);
9933: $val = &unescape($val);
9934: if ($key eq $item) {
9935: $instcoderegexp .= '('.$val.')';
9936: last;
9937: }
9938: }
9939: } else {
9940: $instcoderegexp .= $codedefaults->{$item};
9941: }
9942: }
9943: $instcoderegexp .= '$';
9944: my (@from,@to);
9945: eval {
9946: (@from) = ($clonefromcode =~ /$instcoderegexp/);
9947: (@to) = ($clonetocode =~ /$instcoderegexp/);
9948: };
9949: if ((@from > 0) && (@to > 0)) {
9950: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
9951: if (!@diffs) {
9952: $canclone = 1;
9953: }
9954: }
9955: }
9956: return $canclone;
9957: }
9958:
9959: sub default_instcode_cloning {
9960: my ($clonedom,$domdefclone,$clonefromcode,$clonetocode,$codedefaultsref,$codeorderref) = @_;
9961: my (%codedefaults,@code_order,$canclone);
9962: if ((ref($codedefaultsref) eq 'HASH') && (ref($codeorderref) eq 'ARRAY')) {
9963: %codedefaults = %{$codedefaultsref};
9964: @code_order = @{$codeorderref};
9965: } elsif ($clonedom) {
9966: &auto_instcode_defaults($clonedom,\%codedefaults,\@code_order);
9967: }
9968: if (($domdefclone) && (@code_order)) {
9969: my @clonecodes = split(/\+/,$domdefclone);
9970: my $instcoderegexp ='^';
9971: foreach my $item (@code_order) {
9972: if (grep(/^\Q$item\E$/,@clonecodes)) {
9973: $instcoderegexp .= '('.$codedefaults{$item}.')';
9974: } else {
9975: $instcoderegexp .= $codedefaults{$item};
9976: }
9977: }
9978: $instcoderegexp .= '$';
9979: my (@from,@to);
9980: eval {
9981: (@from) = ($clonefromcode =~ /$instcoderegexp/);
9982: (@to) = ($clonetocode =~ /$instcoderegexp/);
9983: };
9984: if ((@from > 0) && (@to > 0)) {
9985: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
9986: if (!@diffs) {
9987: $canclone = 1;
9988: }
9989: }
9990: }
9991: return $canclone;
9992: }
9993:
9994: # ------------------------------------------------------- Course Group routines
9995:
9996: sub get_coursegroups {
9997: my ($cdom,$cnum,$group,$namespace) = @_;
9998: return(&dump($namespace,$cdom,$cnum,$group));
9999: }
10000:
10001: sub modify_coursegroup {
10002: my ($cdom,$cnum,$groupsettings) = @_;
10003: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
10004: }
10005:
10006: sub toggle_coursegroup_status {
10007: my ($cdom,$cnum,$group,$action) = @_;
10008: my ($from_namespace,$to_namespace);
10009: if ($action eq 'delete') {
10010: $from_namespace = 'coursegroups';
10011: $to_namespace = 'deleted_groups';
10012: } else {
10013: $from_namespace = 'deleted_groups';
10014: $to_namespace = 'coursegroups';
10015: }
10016: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
10017: if (my $tmp = &error(%curr_group)) {
10018: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
10019: return ('read error',$tmp);
10020: } else {
10021: my %savedsettings = %curr_group;
10022: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
10023: my $deloutcome;
10024: if ($result eq 'ok') {
10025: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
10026: } else {
10027: return ('write error',$result);
10028: }
10029: if ($deloutcome eq 'ok') {
10030: return 'ok';
10031: } else {
10032: return ('delete error',$deloutcome);
10033: }
10034: }
10035: }
10036:
10037: sub modify_group_roles {
10038: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
10039: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
10040: my $role = 'gr/'.&escape($userprivs);
10041: my ($uname,$udom) = split(/:/,$user);
10042: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
10043: if ($result eq 'ok') {
10044: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
10045: }
10046: return $result;
10047: }
10048:
10049: sub modify_coursegroup_membership {
10050: my ($cdom,$cnum,$membership) = @_;
10051: my $result = &put('groupmembership',$membership,$cdom,$cnum);
10052: return $result;
10053: }
10054:
10055: sub get_active_groups {
10056: my ($udom,$uname,$cdom,$cnum) = @_;
10057: my $now = time;
10058: my %groups = ();
10059: foreach my $key (keys(%env)) {
10060: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
10061: my ($start,$end) = split(/\./,$env{$key});
10062: if (($end!=0) && ($end<$now)) { next; }
10063: if (($start!=0) && ($start>$now)) { next; }
10064: if ($1 eq $cdom && $2 eq $cnum) {
10065: $groups{$3} = $env{$key} ;
10066: }
10067: }
10068: }
10069: return %groups;
10070: }
10071:
10072: sub get_group_membership {
10073: my ($cdom,$cnum,$group) = @_;
10074: return(&dump('groupmembership',$cdom,$cnum,$group));
10075: }
10076:
10077: sub get_users_groups {
10078: my ($udom,$uname,$courseid) = @_;
10079: my @usersgroups;
10080: my $cachetime=1800;
10081:
10082: my $hashid="$udom:$uname:$courseid";
10083: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
10084: if (defined($cached)) {
10085: @usersgroups = split(/:/,$grouplist);
10086: } else {
10087: $grouplist = '';
10088: my $courseurl = &courseid_to_courseurl($courseid);
10089: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
10090: my $access_end = $env{'course.'.$courseid.
10091: '.default_enrollment_end_date'};
10092: my $now = time;
10093: foreach my $key (keys(%roleshash)) {
10094: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
10095: my $group = $1;
10096: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
10097: my $start = $2;
10098: my $end = $1;
10099: if ($start == -1) { next; } # deleted from group
10100: if (($start!=0) && ($start>$now)) { next; }
10101: if (($end!=0) && ($end<$now)) {
10102: if ($access_end && $access_end < $now) {
10103: if ($access_end - $end < 86400) {
10104: push(@usersgroups,$group);
10105: }
10106: }
10107: next;
10108: }
10109: push(@usersgroups,$group);
10110: }
10111: }
10112: }
10113: @usersgroups = &sort_course_groups($courseid,@usersgroups);
10114: $grouplist = join(':',@usersgroups);
10115: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
10116: }
10117: return @usersgroups;
10118: }
10119:
10120: sub devalidate_getgroups_cache {
10121: my ($udom,$uname,$cdom,$cnum)=@_;
10122: my $courseid = $cdom.'_'.$cnum;
10123:
10124: my $hashid="$udom:$uname:$courseid";
10125: &devalidate_cache_new('getgroups',$hashid);
10126: }
10127:
10128: # ------------------------------------------------------------------ Plain Text
10129:
10130: sub plaintext {
10131: my ($short,$type,$cid,$forcedefault) = @_;
10132: if ($short =~ m{^cr/}) {
10133: return (split('/',$short))[-1];
10134: }
10135: if (!defined($cid)) {
10136: $cid = $env{'request.course.id'};
10137: }
10138: my %rolenames = (
10139: Course => 'std',
10140: Community => 'alt1',
10141: Placement => 'std',
10142: );
10143: if ($cid ne '') {
10144: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
10145: unless ($forcedefault) {
10146: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
10147: &Apache::lonlocal::mt_escape(\$roletext);
10148: return &Apache::lonlocal::mt($roletext);
10149: }
10150: }
10151: }
10152: if ((defined($type)) && (defined($rolenames{$type})) &&
10153: (defined($rolenames{$type})) &&
10154: (defined($prp{$short}{$rolenames{$type}}))) {
10155: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
10156: } elsif ($cid ne '') {
10157: my $crstype = $env{'course.'.$cid.'.type'};
10158: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
10159: (defined($prp{$short}{$rolenames{$crstype}}))) {
10160: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
10161: }
10162: }
10163: return &Apache::lonlocal::mt($prp{$short}{'std'});
10164: }
10165:
10166: # ----------------------------------------------------------------- Assign Role
10167:
10168: sub assignrole {
10169: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
10170: $context)=@_;
10171: my $mrole;
10172: if ($role =~ /^cr\//) {
10173: my $cwosec=$url;
10174: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
10175: unless (&allowed('ccr',$cwosec)) {
10176: my $refused = 1;
10177: if ($context eq 'requestcourses') {
10178: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
10179: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
10180: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
10181: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
10182: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
10183: if ($crsenv{'internal.courseowner'} eq
10184: $env{'user.name'}.':'.$env{'user.domain'}) {
10185: $refused = '';
10186: }
10187: }
10188: }
10189: }
10190: }
10191: if ($refused) {
10192: &logthis('Refused custom assignrole: '.
10193: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
10194: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
10195: return 'refused';
10196: }
10197: }
10198: $mrole='cr';
10199: } elsif ($role =~ /^gr\//) {
10200: my $cwogrp=$url;
10201: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
10202: unless (&allowed('mdg',$cwogrp)) {
10203: &logthis('Refused group assignrole: '.
10204: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
10205: $env{'user.name'}.' at '.$env{'user.domain'});
10206: return 'refused';
10207: }
10208: $mrole='gr';
10209: } else {
10210: my $cwosec=$url;
10211: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
10212: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
10213: my $refused;
10214: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
10215: if (!(&allowed('c'.$role,$url))) {
10216: $refused = 1;
10217: }
10218: } else {
10219: $refused = 1;
10220: }
10221: if ($refused) {
10222: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
10223: if (!$selfenroll && (($context eq 'course') || ($context eq 'ltienroll' && $env{'request.lti.login'}))) {
10224: my %crsenv;
10225: if ($role eq 'cc' || $role eq 'co') {
10226: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
10227: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
10228: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
10229: if ($crsenv{'internal.courseowner'} eq
10230: $env{'user.name'}.':'.$env{'user.domain'}) {
10231: $refused = '';
10232: }
10233: }
10234: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
10235: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
10236: if ($crsenv{'internal.courseowner'} eq
10237: $env{'user.name'}.':'.$env{'user.domain'}) {
10238: $refused = '';
10239: }
10240: }
10241: }
10242: }
10243: } elsif (($selfenroll == 1) && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
10244: if ($role eq 'st') {
10245: $refused = '';
10246: } elsif (($context eq 'ltienroll') && ($env{'request.lti.login'})) {
10247: $refused = '';
10248: }
10249: } elsif ($context eq 'requestcourses') {
10250: my @possroles = ('st','ta','ep','in','cc','co');
10251: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
10252: my $wrongcc;
10253: if ($cnum =~ /^$match_community$/) {
10254: $wrongcc = 1 if ($role eq 'cc');
10255: } else {
10256: $wrongcc = 1 if ($role eq 'co');
10257: }
10258: unless ($wrongcc) {
10259: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
10260: if ($crsenv{'internal.courseowner'} eq
10261: $env{'user.name'}.':'.$env{'user.domain'}) {
10262: $refused = '';
10263: }
10264: }
10265: }
10266: } elsif ($context eq 'requestauthor') {
10267: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
10268: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
10269: if ($env{'environment.requestauthor'} eq 'automatic') {
10270: $refused = '';
10271: } else {
10272: my %domdefaults = &get_domain_defaults($udom);
10273: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
10274: my $checkbystatus;
10275: if ($env{'user.adv'}) {
10276: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
10277: if ($disposition eq 'automatic') {
10278: $refused = '';
10279: } elsif ($disposition eq '') {
10280: $checkbystatus = 1;
10281: }
10282: } else {
10283: $checkbystatus = 1;
10284: }
10285: if ($checkbystatus) {
10286: if ($env{'environment.inststatus'}) {
10287: my @inststatuses = split(/,/,$env{'environment.inststatus'});
10288: foreach my $type (@inststatuses) {
10289: if (($type ne '') &&
10290: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
10291: $refused = '';
10292: }
10293: }
10294: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
10295: $refused = '';
10296: }
10297: }
10298: }
10299: }
10300: }
10301: }
10302: if ($refused) {
10303: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
10304: ' '.$role.' '.$end.' '.$start.' by '.
10305: $env{'user.name'}.' at '.$env{'user.domain'});
10306: return 'refused';
10307: }
10308: }
10309: } elsif ($role eq 'au') {
10310: if ($url ne '/'.$udom.'/') {
10311: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
10312: ' to assign author role for '.$uname.':'.$udom.
10313: ' in domain: '.$url.' refused (wrong domain).');
10314: return 'refused';
10315: }
10316: }
10317: $mrole=$role;
10318: }
10319: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
10320: "$udom:$uname:$url".'_'."$mrole=$role";
10321: if ($end) { $command.='_'.$end; }
10322: if ($start) {
10323: if ($end) {
10324: $command.='_'.$start;
10325: } else {
10326: $command.='_0_'.$start;
10327: }
10328: }
10329: my $origstart = $start;
10330: my $origend = $end;
10331: my $delflag;
10332: # actually delete
10333: if ($deleteflag) {
10334: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
10335: # modify command to delete the role
10336: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
10337: "$udom:$uname:$url".'_'."$mrole";
10338: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
10339: # set start and finish to negative values for userrolelog
10340: $start=-1;
10341: $end=-1;
10342: $delflag = 1;
10343: }
10344: }
10345: # send command
10346: my $answer=&reply($command,&homeserver($uname,$udom));
10347: # log new user role if status is ok
10348: if ($answer eq 'ok') {
10349: &userrolelog($role,$uname,$udom,$url,$start,$end);
10350: if (($role eq 'cc') || ($role eq 'in') ||
10351: ($role eq 'ep') || ($role eq 'ad') ||
10352: ($role eq 'ta') || ($role eq 'st') ||
10353: ($role=~/^cr/) || ($role eq 'gr') ||
10354: ($role eq 'co')) {
10355: # for course roles, perform group memberships changes triggered by role change.
10356: unless ($role =~ /^gr/) {
10357: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
10358: $origstart,$selfenroll,$context);
10359: }
10360: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
10361: $selfenroll,$context);
10362: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
10363: ($role eq 'au') || ($role eq 'dc') || ($role eq 'dh') ||
10364: ($role eq 'da')) {
10365: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
10366: $context);
10367: } elsif (($role eq 'ca') || ($role eq 'aa')) {
10368: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
10369: $context);
10370: }
10371: if ($role eq 'cc') {
10372: &autoupdate_coowners($url,$end,$start,$uname,$udom);
10373: }
10374: }
10375: return $answer;
10376: }
10377:
10378: sub autoupdate_coowners {
10379: my ($url,$end,$start,$uname,$udom) = @_;
10380: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
10381: if (($cdom ne '') && ($cnum ne '')) {
10382: my $now = time;
10383: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
10384: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
10385: my %coursehash = &coursedescription($cdom.'_'.$cnum);
10386: my $instcode = $coursehash{'internal.coursecode'};
10387: my $xlists = $coursehash{'internal.crosslistings'};
10388: if ($instcode ne '') {
10389: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
10390: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
10391: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
10392: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
10393: unless ($result eq 'valid') {
10394: if ($xlists ne '') {
10395: foreach my $xlist (split(',',$xlists)) {
10396: my ($inst_crosslist,$lcsec) = split(':',$xlist);
10397: $result =
10398: &auto_validate_inst_crosslist($cnum,$cdom,$instcode,
10399: $inst_crosslist,$uname.':'.$udom);
10400: last if ($result eq 'valid');
10401: }
10402: }
10403: }
10404: if ($result eq 'valid') {
10405: if ($coursehash{'internal.co-owners'}) {
10406: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
10407: push(@newcoowners,$coowner);
10408: }
10409: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
10410: push(@newcoowners,$uname.':'.$udom);
10411: }
10412: @newcoowners = sort(@newcoowners);
10413: } else {
10414: push(@newcoowners,$uname.':'.$udom);
10415: }
10416: } elsif ($coursehash{'internal.co-owners'}) {
10417: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
10418: unless ($coowner eq $uname.':'.$udom) {
10419: push(@newcoowners,$coowner);
10420: }
10421: }
10422: unless (@newcoowners > 0) {
10423: $delcoowners = 1;
10424: $coowners = '';
10425: }
10426: }
10427: if (@newcoowners || $delcoowners) {
10428: &store_coowners($cdom,$cnum,$coursehash{'home'},
10429: $delcoowners,@newcoowners);
10430: }
10431: }
10432: }
10433: }
10434: }
10435: }
10436: }
10437:
10438: sub store_coowners {
10439: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
10440: my $cid = $cdom.'_'.$cnum;
10441: my ($coowners,$delresult,$putresult);
10442: if (@newcoowners) {
10443: $coowners = join(',',@newcoowners);
10444: my %coownershash = (
10445: 'internal.co-owners' => $coowners,
10446: );
10447: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
10448: if ($putresult eq 'ok') {
10449: if ($env{'course.'.$cid.'.num'} eq $cnum) {
10450: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
10451: }
10452: }
10453: }
10454: if ($delcoowners) {
10455: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
10456: if ($delresult eq 'ok') {
10457: if ($env{'course.'.$cid.'.internal.co-owners'}) {
10458: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
10459: }
10460: }
10461: }
10462: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
10463: my %crsinfo =
10464: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
10465: if (ref($crsinfo{$cid}) eq 'HASH') {
10466: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
10467: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
10468: }
10469: }
10470: }
10471:
10472: # -------------------------------------------------- Modify user authentication
10473: # Overrides without validation
10474:
10475: sub modifyuserauth {
10476: my ($udom,$uname,$umode,$upass)=@_;
10477: my $uhome=&homeserver($uname,$udom);
10478: my $allowed;
10479: if (&allowed('mau',$udom)) {
10480: $allowed = 1;
10481: } elsif (($umode eq 'internal') && ($udom eq $env{'user.domain'}) &&
10482: ($env{'request.course.id'}) && (&allowed('mip',$env{'request.course.id'})) &&
10483: (!$env{'course.'.$env{'request.course.id'}.'.internal.nopasswdchg'})) {
10484: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
10485: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
10486: if (($cdom ne '') && ($cnum ne '')) {
10487: my $is_owner = &is_course_owner($cdom,$cnum);
10488: if ($is_owner) {
10489: $allowed = 1;
10490: }
10491: }
10492: }
10493: unless ($allowed) { return 'refused'; }
10494: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
10495: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
10496: ' in domain '.$env{'request.role.domain'});
10497: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
10498: &escape($upass),$uhome);
10499: my $ip = &get_requestor_ip();
10500: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
10501: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
10502: '(Remote '.$ip.'): '.$reply);
10503: &log($udom,,$uname,$uhome,
10504: 'Authentication changed by '.$env{'user.domain'}.', '.
10505: $env{'user.name'}.', '.$umode.
10506: '(Remote '.$ip.'): '.$reply);
10507: unless ($reply eq 'ok') {
10508: &logthis('Authentication mode error: '.$reply);
10509: return 'error: '.$reply;
10510: }
10511: return 'ok';
10512: }
10513:
10514: # --------------------------------------------------------------- Modify a user
10515:
10516: sub modifyuser {
10517: my ($udom, $uname, $uid,
10518: $umode, $upass, $first,
10519: $middle, $last, $gene,
10520: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
10521: $udom= &LONCAPA::clean_domain($udom);
10522: $uname=&LONCAPA::clean_username($uname);
10523: my $showcandelete = 'none';
10524: if (ref($candelete) eq 'ARRAY') {
10525: if (@{$candelete} > 0) {
10526: $showcandelete = join(', ',@{$candelete});
10527: }
10528: }
10529: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
10530: $umode.', '.$first.', '.$middle.', '.
10531: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
10532: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
10533: ' desiredhome not specified').
10534: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
10535: ' in domain '.$env{'request.role.domain'});
10536: my $uhome=&homeserver($uname,$udom,'true');
10537: my $newuser;
10538: if ($uhome eq 'no_host') {
10539: $newuser = 1;
10540: unless (($umode && ($upass ne '')) || ($umode eq 'localauth') ||
10541: ($umode eq 'lti')) {
10542: return 'error: more information needed to create new user';
10543: }
10544: }
10545: # ----------------------------------------------------------------- Create User
10546: if (($uhome eq 'no_host') &&
10547: (($umode && $upass) || ($umode eq 'localauth') || ($umode eq 'lti'))) {
10548: my $unhome='';
10549: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
10550: $unhome = $desiredhome;
10551: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
10552: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
10553: } else { # load balancing routine for determining $unhome
10554: my $loadm=10000000;
10555: my %servers = &get_servers($udom,'library');
10556: foreach my $tryserver (keys(%servers)) {
10557: my $answer=reply('load',$tryserver);
10558: if (($answer=~/\d+/) && ($answer<$loadm)) {
10559: $loadm=$answer;
10560: $unhome=$tryserver;
10561: }
10562: }
10563: }
10564: if (($unhome eq '') || ($unhome eq 'no_host')) {
10565: return 'error: unable to find a home server for '.$uname.
10566: ' in domain '.$udom;
10567: }
10568: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
10569: &escape($upass),$unhome);
10570: unless ($reply eq 'ok') {
10571: return 'error: '.$reply;
10572: }
10573: $uhome=&homeserver($uname,$udom,'true');
10574: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
10575: return 'error: unable verify users home machine.';
10576: }
10577: } # End of creation of new user
10578: # ---------------------------------------------------------------------- Add ID
10579: if ($uid) {
10580: $uid=~tr/A-Z/a-z/;
10581: my %uidhash=&idrget($udom,$uname);
10582: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
10583: && (!$forceid)) {
10584: unless ($uid eq $uidhash{$uname}) {
10585: return 'error: user id "'.$uid.'" does not match '.
10586: 'current user id "'.$uidhash{$uname}.'".';
10587: }
10588: } else {
10589: &idput($udom,{$uname => $uid},$uhome,'ids');
10590: }
10591: }
10592: # -------------------------------------------------------------- Add names, etc
10593: my @tmp=&get('environment',
10594: ['firstname','middlename','lastname','generation','id',
10595: 'permanentemail','inststatus'],
10596: $udom,$uname);
10597: my (%names,%oldnames);
10598: if ($tmp[0] =~ m/^error:.*/) {
10599: %names=();
10600: } else {
10601: %names = @tmp;
10602: %oldnames = %names;
10603: }
10604: #
10605: # If name, email and/or uid are blank (e.g., because an uploaded file
10606: # of users did not contain them), do not overwrite existing values
10607: # unless field is in $candelete array ref.
10608: #
10609:
10610: my @fields = ('firstname','middlename','lastname','generation',
10611: 'permanentemail','id');
10612: my %newvalues;
10613: if (ref($candelete) eq 'ARRAY') {
10614: foreach my $field (@fields) {
10615: if (grep(/^\Q$field\E$/,@{$candelete})) {
10616: if ($field eq 'firstname') {
10617: $names{$field} = $first;
10618: } elsif ($field eq 'middlename') {
10619: $names{$field} = $middle;
10620: } elsif ($field eq 'lastname') {
10621: $names{$field} = $last;
10622: } elsif ($field eq 'generation') {
10623: $names{$field} = $gene;
10624: } elsif ($field eq 'permanentemail') {
10625: $names{$field} = $email;
10626: } elsif ($field eq 'id') {
10627: $names{$field} = $uid;
10628: }
10629: }
10630: }
10631: }
10632: if ($first) { $names{'firstname'} = $first; }
10633: if (defined($middle)) { $names{'middlename'} = $middle; }
10634: if ($last) { $names{'lastname'} = $last; }
10635: if (defined($gene)) { $names{'generation'} = $gene; }
10636: if ($email) {
10637: $email=~s/[^\w\@\.\-\,]//gs;
10638: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
10639: }
10640: if ($uid) { $names{'id'} = $uid; }
10641: if (defined($inststatus)) {
10642: $names{'inststatus'} = '';
10643: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
10644: if (ref($usertypes) eq 'HASH') {
10645: my @okstatuses;
10646: foreach my $item (split(/:/,$inststatus)) {
10647: if (defined($usertypes->{$item})) {
10648: push(@okstatuses,$item);
10649: }
10650: }
10651: if (@okstatuses) {
10652: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
10653: }
10654: }
10655: }
10656: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
10657: $umode.', '.$first.', '.$middle.', '.
10658: $last.', '.$gene.', '.$email.', '.$inststatus;
10659: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
10660: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
10661: } else {
10662: $logmsg .= ' during self creation';
10663: }
10664: my $changed;
10665: if ($newuser) {
10666: $changed = 1;
10667: } else {
10668: foreach my $field (@fields) {
10669: if ($names{$field} ne $oldnames{$field}) {
10670: $changed = 1;
10671: last;
10672: }
10673: }
10674: }
10675: unless ($changed) {
10676: $logmsg = 'No changes in user information needed for: '.$logmsg;
10677: &logthis($logmsg);
10678: return 'ok';
10679: }
10680: my $reply = &put('environment', \%names, $udom,$uname);
10681: if ($reply ne 'ok') {
10682: return 'error: '.$reply;
10683: }
10684: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
10685: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
10686: }
10687: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
10688: &devalidate_cache_new('namescache',$uname.':'.$udom);
10689: $logmsg = 'Success modifying user '.$logmsg;
10690: &logthis($logmsg);
10691: return 'ok';
10692: }
10693:
10694: # -------------------------------------------------------------- Modify student
10695:
10696: sub modifystudent {
10697: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
10698: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
10699: $selfenroll,$context,$inststatus,$credits,$instsec)=@_;
10700: if (!$cid) {
10701: unless ($cid=$env{'request.course.id'}) {
10702: return 'not_in_class';
10703: }
10704: }
10705: # --------------------------------------------------------------- Make the user
10706: my $reply=&modifyuser
10707: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
10708: $desiredhome,$email,$inststatus);
10709: unless ($reply eq 'ok') { return $reply; }
10710: # This will cause &modify_student_enrollment to get the uid from the
10711: # student's environment
10712: $uid = undef if (!$forceid);
10713: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
10714: $gene,$usec,$end,$start,$type,$locktype,
10715: $cid,$selfenroll,$context,$credits,$instsec);
10716: return $reply;
10717: }
10718:
10719: sub modify_student_enrollment {
10720: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
10721: $locktype,$cid,$selfenroll,$context,$credits,$instsec) = @_;
10722: my ($cdom,$cnum,$chome);
10723: if (!$cid) {
10724: unless ($cid=$env{'request.course.id'}) {
10725: return 'not_in_class';
10726: }
10727: $cdom=$env{'course.'.$cid.'.domain'};
10728: $cnum=$env{'course.'.$cid.'.num'};
10729: } else {
10730: ($cdom,$cnum)=split(/_/,$cid);
10731: }
10732: $chome=$env{'course.'.$cid.'.home'};
10733: if (!$chome) {
10734: $chome=&homeserver($cnum,$cdom);
10735: }
10736: if (!$chome) { return 'unknown_course'; }
10737: # Make sure the user exists
10738: my $uhome=&homeserver($uname,$udom);
10739: if (($uhome eq '') || ($uhome eq 'no_host')) {
10740: return 'error: no such user';
10741: }
10742: # Get student data if we were not given enough information
10743: if (!defined($first) || $first eq '' ||
10744: !defined($last) || $last eq '' ||
10745: !defined($uid) || $uid eq '' ||
10746: !defined($middle) || $middle eq '' ||
10747: !defined($gene) || $gene eq '') {
10748: # They did not supply us with enough data to enroll the student, so
10749: # we need to pick up more information.
10750: my %tmp = &get('environment',
10751: ['firstname','middlename','lastname', 'generation','id']
10752: ,$udom,$uname);
10753:
10754: #foreach my $key (keys(%tmp)) {
10755: # &logthis("key $key = ".$tmp{$key});
10756: #}
10757: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
10758: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
10759: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
10760: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
10761: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
10762: }
10763: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
10764: my $user = "$uname:$udom";
10765: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
10766: my $reply=cput('classlist',
10767: {$user =>
10768: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits,$instsec) },
10769: $cdom,$cnum);
10770: if (($reply eq 'ok') || ($reply eq 'delayed')) {
10771: &devalidate_getsection_cache($udom,$uname,$cid);
10772: } else {
10773: return 'error: '.$reply;
10774: }
10775: # Add student role to user
10776: my $uurl='/'.$cid;
10777: $uurl=~s/\_/\//g;
10778: if ($usec) {
10779: $uurl.='/'.$usec;
10780: }
10781: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
10782: $selfenroll,$context);
10783: if ($result ne 'ok') {
10784: if ($old_entry{$user} ne '') {
10785: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
10786: } else {
10787: $reply = &del('classlist',[$user],$cdom,$cnum);
10788: }
10789: }
10790: return $result;
10791: }
10792:
10793: sub format_name {
10794: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
10795: my $name;
10796: if ($first ne 'lastname') {
10797: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
10798: } else {
10799: if ($lastname=~/\S/) {
10800: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
10801: $name=~s/\s+,/,/;
10802: } else {
10803: $name.= $firstname.' '.$middlename.' '.$generation;
10804: }
10805: }
10806: $name=~s/^\s+//;
10807: $name=~s/\s+$//;
10808: $name=~s/\s+/ /g;
10809: return $name;
10810: }
10811:
10812: # ------------------------------------------------- Write to course preferences
10813:
10814: sub writecoursepref {
10815: my ($courseid,%prefs)=@_;
10816: $courseid=~s/^\///;
10817: $courseid=~s/\_/\//g;
10818: my ($cdomain,$cnum)=split(/\//,$courseid);
10819: my $chome=homeserver($cnum,$cdomain);
10820: if (($chome eq '') || ($chome eq 'no_host')) {
10821: return 'error: no such course';
10822: }
10823: my $cstring='';
10824: foreach my $pref (keys(%prefs)) {
10825: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
10826: }
10827: $cstring=~s/\&$//;
10828: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
10829: }
10830:
10831: # ---------------------------------------------------------- Make/modify course
10832:
10833: sub createcourse {
10834: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
10835: $course_owner,$crstype,$cnum,$context,$category,$callercontext)=@_;
10836: $url=&declutter($url);
10837: my $cid='';
10838: if ($context eq 'requestcourses') {
10839: my $can_create = 0;
10840: my ($ownername,$ownerdom) = split(':',$course_owner);
10841: if ($udom eq $ownerdom) {
10842: my $reload;
10843: if (($callercontext eq 'auto') &&
10844: ($ownerdom eq $env{'user.domain'}) && ($ownername eq $env{'user.name'})) {
10845: $reload = 'reload';
10846: }
10847: if (&usertools_access($ownername,$ownerdom,$category,$reload,
10848: $context)) {
10849: $can_create = 1;
10850: }
10851: } else {
10852: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
10853: $category);
10854: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
10855: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
10856: if (@curr > 0) {
10857: my @options = qw(approval validate autolimit);
10858: my $optregex = join('|',@options);
10859: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
10860: $can_create = 1;
10861: }
10862: }
10863: }
10864: }
10865: if ($can_create) {
10866: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
10867: unless (&allowed('ccc',$udom)) {
10868: return 'refused';
10869: }
10870: }
10871: } else {
10872: return 'refused';
10873: }
10874: } elsif (!&allowed('ccc',$udom)) {
10875: return 'refused';
10876: }
10877: # --------------------------------------------------------------- Get Unique ID
10878: my $uname;
10879: if ($cnum =~ /^$match_courseid$/) {
10880: my $chome=&homeserver($cnum,$udom,'true');
10881: if (($chome eq '') || ($chome eq 'no_host')) {
10882: $uname = $cnum;
10883: } else {
10884: $uname = &generate_coursenum($udom,$crstype);
10885: }
10886: } else {
10887: $uname = &generate_coursenum($udom,$crstype);
10888: }
10889: return $uname if ($uname =~ /^error/);
10890: # -------------------------------------------------- Check supplied server name
10891: if (!defined($course_server)) {
10892: if (defined(&domain($udom,'primary'))) {
10893: $course_server = &domain($udom,'primary');
10894: } else {
10895: $course_server = $env{'user.home'};
10896: }
10897: }
10898: my %host_servers =
10899: &Apache::lonnet::get_servers($udom,'library');
10900: unless ($host_servers{$course_server}) {
10901: return 'error: invalid home server for course: '.$course_server;
10902: }
10903: # ------------------------------------------------------------- Make the course
10904: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
10905: $course_server);
10906: unless ($reply eq 'ok') { return 'error: '.$reply; }
10907: my $uhome=&homeserver($uname,$udom,'true');
10908: if (($uhome eq '') || ($uhome eq 'no_host')) {
10909: return 'error: no such course';
10910: }
10911: # ----------------------------------------------------------------- Course made
10912: # log existence
10913: my $now = time;
10914: my $newcourse = {
10915: $udom.'_'.$uname => {
10916: description => $description,
10917: inst_code => $inst_code,
10918: owner => $course_owner,
10919: type => $crstype,
10920: creator => $env{'user.name'}.':'.
10921: $env{'user.domain'},
10922: created => $now,
10923: context => $context,
10924: },
10925: };
10926: &courseidput($udom,$newcourse,$uhome,'notime');
10927: # set toplevel url
10928: my $topurl=$url;
10929: unless ($nonstandard) {
10930: # ------------------------------------------ For standard courses, make top url
10931: my $mapurl=&clutter($url);
10932: if ($mapurl eq '/res/') { $mapurl=''; }
10933: $env{'form.initmap'}=(<<ENDINITMAP);
10934: <map>
10935: <resource id="1" type="start"></resource>
10936: <resource id="2" src="$mapurl"></resource>
10937: <resource id="3" type="finish"></resource>
10938: <link index="1" from="1" to="2"></link>
10939: <link index="2" from="2" to="3"></link>
10940: </map>
10941: ENDINITMAP
10942: $topurl=&declutter(
10943: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
10944: );
10945: }
10946: # ----------------------------------------------------------- Write preferences
10947: &writecoursepref($udom.'_'.$uname,
10948: ('description' => $description,
10949: 'url' => $topurl,
10950: 'internal.creator' => $env{'user.name'}.':'.
10951: $env{'user.domain'},
10952: 'internal.created' => $now,
10953: 'internal.creationcontext' => $context)
10954: );
10955: return '/'.$udom.'/'.$uname;
10956: }
10957:
10958: # ------------------------------------------------------------------- Create ID
10959: sub generate_coursenum {
10960: my ($udom,$crstype) = @_;
10961: my $domdesc = &domain($udom);
10962: return 'error: invalid domain' if ($domdesc eq '');
10963: my $first;
10964: if ($crstype eq 'Community') {
10965: $first = '0';
10966: } else {
10967: $first = int(1+rand(9));
10968: }
10969: my $uname=$first.
10970: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
10971: substr($$.time,0,5).unpack("H8",pack("I32",time)).
10972: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
10973: # ----------------------------------------------- Make sure that does not exist
10974: my $uhome=&homeserver($uname,$udom,'true');
10975: unless (($uhome eq '') || ($uhome eq 'no_host')) {
10976: if ($crstype eq 'Community') {
10977: $first = '0';
10978: } else {
10979: $first = int(1+rand(9));
10980: }
10981: $uname=$first.
10982: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
10983: substr($$.time,0,5).unpack("H8",pack("I32",time)).
10984: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
10985: $uhome=&homeserver($uname,$udom,'true');
10986: unless (($uhome eq '') || ($uhome eq 'no_host')) {
10987: return 'error: unable to generate unique course-ID';
10988: }
10989: }
10990: return $uname;
10991: }
10992:
10993: sub is_course {
10994: my ($cdom, $cnum) = scalar(@_) == 1 ?
10995: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
10996:
10997: return unless (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/));
10998: my $uhome=&homeserver($cnum,$cdom);
10999: my $iscourse;
11000: if (grep { $_ eq $uhome } current_machine_ids()) {
11001: $iscourse = &LONCAPA::Lond::is_course($cdom,$cnum);
11002: } else {
11003: my $hashid = $cdom.':'.$cnum;
11004: ($iscourse,my $cached) = &is_cached_new('iscourse',$hashid);
11005: unless (defined($cached)) {
11006: my %courses = &courseiddump($cdom, '.', 1, '.', '.',
11007: $cnum,undef,undef,'.');
11008: $iscourse = 0;
11009: if (exists($courses{$cdom.'_'.$cnum})) {
11010: $iscourse = 1;
11011: }
11012: &do_cache_new('iscourse',$hashid,$iscourse,3600);
11013: }
11014: }
11015: return unless ($iscourse);
11016: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
11017: }
11018:
11019: sub store_userdata {
11020: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
11021: my $result;
11022: if ($datakey ne '') {
11023: if (ref($storehash) eq 'HASH') {
11024: if ($udom eq '' || $uname eq '') {
11025: $udom = $env{'user.domain'};
11026: $uname = $env{'user.name'};
11027: }
11028: my $uhome=&homeserver($uname,$udom);
11029: if (($uhome eq '') || ($uhome eq 'no_host')) {
11030: $result = 'error: no_host';
11031: } else {
11032: $storehash->{'ip'} = &get_requestor_ip();
11033: $storehash->{'host'} = $perlvar{'lonHostID'};
11034:
11035: my $namevalue='';
11036: foreach my $key (keys(%{$storehash})) {
11037: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
11038: }
11039: $namevalue=~s/\&$//;
11040: unless ($namespace eq 'courserequests') {
11041: $datakey = &escape($datakey);
11042: }
11043: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
11044: $namevalue,$uhome);
11045: }
11046: } else {
11047: $result = 'error: data to store was not a hash reference';
11048: }
11049: } else {
11050: $result= 'error: invalid requestkey';
11051: }
11052: return $result;
11053: }
11054:
11055: # ---------------------------------------------------------- Assign Custom Role
11056:
11057: sub assigncustomrole {
11058: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
11059: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
11060: $end,$start,$deleteflag,$selfenroll,$context);
11061: }
11062:
11063: # ----------------------------------------------------------------- Revoke Role
11064:
11065: sub revokerole {
11066: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
11067: my $now=time;
11068: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
11069: }
11070:
11071: # ---------------------------------------------------------- Revoke Custom Role
11072:
11073: sub revokecustomrole {
11074: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
11075: my $now=time;
11076: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
11077: $deleteflag,$selfenroll,$context);
11078: }
11079:
11080: # ------------------------------------------------------------ Disk usage
11081: sub diskusage {
11082: my ($udom,$uname,$directorypath,$getpropath)=@_;
11083: $directorypath =~ s/\/$//;
11084: my $listing=&reply('du2:'.&escape($directorypath).':'
11085: .&escape($getpropath).':'.&escape($uname).':'
11086: .&escape($udom),homeserver($uname,$udom));
11087: if ($listing eq 'unknown_cmd') {
11088: if ($getpropath) {
11089: $directorypath = &propath($udom,$uname).'/'.$directorypath;
11090: }
11091: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
11092: }
11093: return $listing;
11094: }
11095:
11096: sub is_locked {
11097: my ($file_name, $domain, $user, $which) = @_;
11098: my @check;
11099: my $is_locked;
11100: push (@check,$file_name);
11101: my %locked = &get('file_permissions',\@check,
11102: $env{'user.domain'},$env{'user.name'});
11103: my ($tmp)=keys(%locked);
11104: if ($tmp=~/^error:/) { undef(%locked); }
11105:
11106: if (ref($locked{$file_name}) eq 'ARRAY') {
11107: $is_locked = 'false';
11108: foreach my $entry (@{$locked{$file_name}}) {
11109: if (ref($entry) eq 'ARRAY') {
11110: $is_locked = 'true';
11111: if (ref($which) eq 'ARRAY') {
11112: push(@{$which},$entry);
11113: } else {
11114: last;
11115: }
11116: }
11117: }
11118: } else {
11119: $is_locked = 'false';
11120: }
11121: return $is_locked;
11122: }
11123:
11124: sub declutter_portfile {
11125: my ($file) = @_;
11126: $file =~ s{^(/portfolio/|portfolio/)}{/};
11127: return $file;
11128: }
11129:
11130: # ------------------------------------------------------------- Mark as Read Only
11131:
11132: sub mark_as_readonly {
11133: my ($domain,$user,$files,$what) = @_;
11134: my %current_permissions = &dump('file_permissions',$domain,$user);
11135: my ($tmp)=keys(%current_permissions);
11136: if ($tmp=~/^error:/) { undef(%current_permissions); }
11137: foreach my $file (@{$files}) {
11138: $file = &declutter_portfile($file);
11139: push(@{$current_permissions{$file}},$what);
11140: }
11141: &put('file_permissions',\%current_permissions,$domain,$user);
11142: return;
11143: }
11144:
11145: # ------------------------------------------------------------Save Selected Files
11146:
11147: sub save_selected_files {
11148: my ($user, $path, @files) = @_;
11149: my $filename = $user."savedfiles";
11150: my @other_files = &files_not_in_path($user, $path);
11151: open (OUT,'>',LONCAPA::tempdir().$filename);
11152: foreach my $file (@files) {
11153: print (OUT $env{'form.currentpath'}.$file."\n");
11154: }
11155: foreach my $file (@other_files) {
11156: print (OUT $file."\n");
11157: }
11158: close (OUT);
11159: return 'ok';
11160: }
11161:
11162: sub clear_selected_files {
11163: my ($user) = @_;
11164: my $filename = $user."savedfiles";
11165: open (OUT,'>',LONCAPA::tempdir().$filename);
11166: print (OUT undef);
11167: close (OUT);
11168: return ("ok");
11169: }
11170:
11171: sub files_in_path {
11172: my ($user, $path) = @_;
11173: my $filename = $user."savedfiles";
11174: my %return_files;
11175: open (IN,'<',LONCAPA::tempdir().$filename);
11176: while (my $line_in = <IN>) {
11177: chomp ($line_in);
11178: my @paths_and_file = split (m!/!, $line_in);
11179: my $file_part = pop (@paths_and_file);
11180: my $path_part = join ('/', @paths_and_file);
11181: $path_part.='/';
11182: my $path_and_file = $path_part.$file_part;
11183: if ($path_part eq $path) {
11184: $return_files{$file_part}= 'selected';
11185: }
11186: }
11187: close (IN);
11188: return (\%return_files);
11189: }
11190:
11191: # called in portfolio select mode, to show files selected NOT in current directory
11192: sub files_not_in_path {
11193: my ($user, $path) = @_;
11194: my $filename = $user."savedfiles";
11195: my @return_files;
11196: my $path_part;
11197: open(IN, '<',LONCAPA::tempdir().$filename);
11198: while (my $line = <IN>) {
11199: #ok, I know it's clunky, but I want it to work
11200: my @paths_and_file = split(m|/|, $line);
11201: my $file_part = pop(@paths_and_file);
11202: chomp($file_part);
11203: my $path_part = join('/', @paths_and_file);
11204: $path_part .= '/';
11205: my $path_and_file = $path_part.$file_part;
11206: if ($path_part ne $path) {
11207: push(@return_files, ($path_and_file));
11208: }
11209: }
11210: close(OUT);
11211: return (@return_files);
11212: }
11213:
11214: #------------------------------Submitted/Handedback Portfolio Files Versioning
11215:
11216: sub portfiles_versioning {
11217: my ($symb,$domain,$stu_name,$portfiles,$versioned_portfiles) = @_;
11218: my $portfolio_root = '/userfiles/portfolio';
11219: return unless ((ref($portfiles) eq 'ARRAY') && (ref($versioned_portfiles) eq 'ARRAY'));
11220: foreach my $file (@{$portfiles}) {
11221: &unmark_as_readonly($domain,$stu_name,[$symb,$env{'request.course.id'}],$file);
11222: my ($directory,$answer_file) =($file =~ /^(.*?)([^\/]*)$/);
11223: my ($answer_name,$answer_ver,$answer_ext) = &file_name_version_ext($answer_file);
11224: my $getpropath = 1;
11225: my ($dir_list,$listerror) = &dirlist($portfolio_root.$directory,$domain,
11226: $stu_name,$getpropath);
11227: my $version = &get_next_version($answer_name,$answer_ext,$dir_list);
11228: my $new_answer =
11229: &version_selected_portfile($domain,$stu_name,$directory,$answer_file,$version);
11230: if ($new_answer ne 'problem getting file') {
11231: push(@{$versioned_portfiles}, $directory.$new_answer);
11232: &mark_as_readonly($domain,$stu_name,[$directory.$new_answer],
11233: [$symb,$env{'request.course.id'},'graded']);
11234: }
11235: }
11236: }
11237:
11238: sub get_next_version {
11239: my ($answer_name, $answer_ext, $dir_list) = @_;
11240: my $version;
11241: if (ref($dir_list) eq 'ARRAY') {
11242: foreach my $row (@{$dir_list}) {
11243: my ($file) = split(/\&/,$row,2);
11244: my ($file_name,$file_version,$file_ext) =
11245: &file_name_version_ext($file);
11246: if (($file_name eq $answer_name) &&
11247: ($file_ext eq $answer_ext)) {
11248: # gets here if filename and extension match,
11249: # regardless of version
11250: if ($file_version ne '') {
11251: # a versioned file is found so save it for later
11252: if ($file_version > $version) {
11253: $version = $file_version;
11254: }
11255: }
11256: }
11257: }
11258: }
11259: $version ++;
11260: return($version);
11261: }
11262:
11263: sub version_selected_portfile {
11264: my ($domain,$stu_name,$directory,$file_name,$version) = @_;
11265: my ($answer_name,$answer_ver,$answer_ext) =
11266: &file_name_version_ext($file_name);
11267: my $new_answer;
11268: $env{'form.copy'} =
11269: &getfile("/uploaded/$domain/$stu_name/portfolio$directory$file_name");
11270: if($env{'form.copy'} eq '-1') {
11271: $new_answer = 'problem getting file';
11272: } else {
11273: $new_answer = $answer_name.'.'.$version.'.'.$answer_ext;
11274: my $copy_result =
11275: &finishuserfileupload($stu_name,$domain,'copy',
11276: '/portfolio'.$directory.$new_answer);
11277: }
11278: undef($env{'form.copy'});
11279: return ($new_answer);
11280: }
11281:
11282: sub file_name_version_ext {
11283: my ($file)=@_;
11284: my @file_parts = split(/\./, $file);
11285: my ($name,$version,$ext);
11286: if (@file_parts > 1) {
11287: $ext=pop(@file_parts);
11288: if (@file_parts > 1 && $file_parts[-1] =~ /^\d+$/) {
11289: $version=pop(@file_parts);
11290: }
11291: $name=join('.',@file_parts);
11292: } else {
11293: $name=join('.',@file_parts);
11294: }
11295: return($name,$version,$ext);
11296: }
11297:
11298: #----------------------------------------------Get portfolio file permissions
11299:
11300: sub get_portfile_permissions {
11301: my ($domain,$user) = @_;
11302: my %current_permissions = &dump('file_permissions',$domain,$user);
11303: my ($tmp)=keys(%current_permissions);
11304: if ($tmp=~/^error:/) { undef(%current_permissions); }
11305: return \%current_permissions;
11306: }
11307:
11308: #---------------------------------------------Get portfolio file access controls
11309:
11310: sub get_access_controls {
11311: my ($current_permissions,$group,$file) = @_;
11312: my %access;
11313: my $real_file = $file;
11314: $file =~ s/\.meta$//;
11315: if (defined($file)) {
11316: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
11317: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
11318: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
11319: }
11320: }
11321: } else {
11322: foreach my $key (keys(%{$current_permissions})) {
11323: if ($key =~ /\0accesscontrol$/) {
11324: if (defined($group)) {
11325: if ($key !~ m-^\Q$group\E/-) {
11326: next;
11327: }
11328: }
11329: my ($fullpath) = split(/\0/,$key);
11330: if (ref($$current_permissions{$key}) eq 'HASH') {
11331: foreach my $control (keys(%{$$current_permissions{$key}})) {
11332: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
11333: }
11334: }
11335: }
11336: }
11337: }
11338: return %access;
11339: }
11340:
11341: sub modify_access_controls {
11342: my ($file_name,$changes,$domain,$user)=@_;
11343: my ($outcome,$deloutcome);
11344: my %store_permissions;
11345: my %new_values;
11346: my %new_control;
11347: my %translation;
11348: my @deletions = ();
11349: my $now = time;
11350: if (exists($$changes{'activate'})) {
11351: if (ref($$changes{'activate'}) eq 'HASH') {
11352: my @newitems = sort(keys(%{$$changes{'activate'}}));
11353: my $numnew = scalar(@newitems);
11354: for (my $i=0; $i<$numnew; $i++) {
11355: my $newkey = $newitems[$i];
11356: my $newid = &Apache::loncommon::get_cgi_id();
11357: if ($newkey =~ /^\d+:/) {
11358: $newkey =~ s/^(\d+)/$newid/;
11359: $translation{$1} = $newid;
11360: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
11361: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
11362: $translation{$1} = $newid;
11363: }
11364: $new_values{$file_name."\0".$newkey} =
11365: $$changes{'activate'}{$newitems[$i]};
11366: $new_control{$newkey} = $now;
11367: }
11368: }
11369: }
11370: my %todelete;
11371: my %changed_items;
11372: foreach my $action ('delete','update') {
11373: if (exists($$changes{$action})) {
11374: if (ref($$changes{$action}) eq 'HASH') {
11375: foreach my $key (keys(%{$$changes{$action}})) {
11376: my ($itemnum) = ($key =~ /^([^:]+):/);
11377: if ($action eq 'delete') {
11378: $todelete{$itemnum} = 1;
11379: } else {
11380: $changed_items{$itemnum} = $key;
11381: }
11382: }
11383: }
11384: }
11385: }
11386: # get lock on access controls for file.
11387: my $lockhash = {
11388: $file_name."\0".'locked_access_records' => $env{'user.name'}.
11389: ':'.$env{'user.domain'},
11390: };
11391: my $tries = 0;
11392: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
11393:
11394: while (($gotlock ne 'ok') && $tries < 10) {
11395: $tries ++;
11396: sleep(0.1);
11397: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
11398: }
11399: if ($gotlock eq 'ok') {
11400: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
11401: my ($tmp)=keys(%curr_permissions);
11402: if ($tmp=~/^error:/) { undef(%curr_permissions); }
11403: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
11404: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
11405: if (ref($curr_controls) eq 'HASH') {
11406: foreach my $control_item (keys(%{$curr_controls})) {
11407: my ($itemnum) = ($control_item =~ /^([^:]+):/);
11408: if (defined($todelete{$itemnum})) {
11409: push(@deletions,$file_name."\0".$control_item);
11410: } else {
11411: if (defined($changed_items{$itemnum})) {
11412: $new_control{$changed_items{$itemnum}} = $now;
11413: push(@deletions,$file_name."\0".$control_item);
11414: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
11415: } else {
11416: $new_control{$control_item} = $$curr_controls{$control_item};
11417: }
11418: }
11419: }
11420: }
11421: }
11422: my ($group);
11423: if (&is_course($domain,$user)) {
11424: ($group,my $file) = split(/\//,$file_name,2);
11425: }
11426: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
11427: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
11428: $outcome = &put('file_permissions',\%new_values,$domain,$user);
11429: # remove lock
11430: my @del_lock = ($file_name."\0".'locked_access_records');
11431: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
11432: my $sqlresult =
11433: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
11434: $group);
11435: } else {
11436: $outcome = "error: could not obtain lockfile\n";
11437: }
11438: return ($outcome,$deloutcome,\%new_values,\%translation);
11439: }
11440:
11441: sub make_public_indefinitely {
11442: my (@requrl) = @_;
11443: return &automated_portfile_access('public',\@requrl);
11444: }
11445:
11446: sub automated_portfile_access {
11447: my ($accesstype,$addsref,$delsref,$info) = @_;
11448: unless (($accesstype eq 'public') || ($accesstype eq 'ip')) {
11449: return 'invalid';
11450: }
11451: my %urls;
11452: if (ref($addsref) eq 'ARRAY') {
11453: foreach my $requrl (@{$addsref}) {
11454: if (&is_portfolio_url($requrl)) {
11455: unless (exists($urls{$requrl})) {
11456: $urls{$requrl} = 'add';
11457: }
11458: }
11459: }
11460: }
11461: if (ref($delsref) eq 'ARRAY') {
11462: foreach my $requrl (@{$delsref}) {
11463: if (&is_portfolio_url($requrl)) {
11464: unless (exists($urls{$requrl})) {
11465: $urls{$requrl} = 'delete';
11466: }
11467: }
11468: }
11469: }
11470: unless (keys(%urls)) {
11471: return 'invalid';
11472: }
11473: my $ip;
11474: if ($accesstype eq 'ip') {
11475: if (ref($info) eq 'HASH') {
11476: if ($info->{'ip'} ne '') {
11477: $ip = $info->{'ip'};
11478: }
11479: }
11480: if ($ip eq '') {
11481: return 'invalid';
11482: }
11483: }
11484: my $errors;
11485: my $now = time;
11486: my %current_perms;
11487: foreach my $requrl (sort(keys(%urls))) {
11488: my $action;
11489: if ($urls{$requrl} eq 'add') {
11490: $action = 'activate';
11491: } else {
11492: $action = 'none';
11493: }
11494: my $aclnum = 0;
11495: my (undef,$udom,$unum,$file_name,$group) =
11496: &parse_portfolio_url($requrl);
11497: unless (exists($current_perms{$unum.':'.$udom})) {
11498: $current_perms{$unum.':'.$udom} = &get_portfile_permissions($udom,$unum);
11499: }
11500: my %access_controls = &get_access_controls($current_perms{$unum.':'.$udom},
11501: $group,$file_name);
11502: foreach my $key (keys(%{$access_controls{$file_name}})) {
11503: my ($num,$scope,$end,$start) =
11504: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
11505: if ($scope eq $accesstype) {
11506: if (($start <= $now) && ($end == 0)) {
11507: if ($accesstype eq 'ip') {
11508: if (ref($access_controls{$file_name}{$key}) eq 'HASH') {
11509: if (ref($access_controls{$file_name}{$key}{'ip'}) eq 'ARRAY') {
11510: if (grep(/^\Q$ip\E$/,@{$access_controls{$file_name}{$key}{'ip'}})) {
11511: if ($urls{$requrl} eq 'add') {
11512: $action = 'none';
11513: last;
11514: } else {
11515: $action = 'delete';
11516: $aclnum = $num;
11517: last;
11518: }
11519: }
11520: }
11521: }
11522: } elsif ($accesstype eq 'public') {
11523: if ($urls{$requrl} eq 'add') {
11524: $action = 'none';
11525: last;
11526: } else {
11527: $action = 'delete';
11528: $aclnum = $num;
11529: last;
11530: }
11531: }
11532: } elsif ($accesstype eq 'public') {
11533: $action = 'update';
11534: $aclnum = $num;
11535: last;
11536: }
11537: }
11538: }
11539: if ($action eq 'none') {
11540: next;
11541: } else {
11542: my %changes;
11543: my $newend = 0;
11544: my $newstart = $now;
11545: my $newkey = $aclnum.':'.$accesstype.'_'.$newend.'_'.$newstart;
11546: $changes{$action}{$newkey} = {
11547: type => $accesstype,
11548: time => {
11549: start => $newstart,
11550: end => $newend,
11551: },
11552: };
11553: if ($accesstype eq 'ip') {
11554: $changes{$action}{$newkey}{'ip'} = [$ip];
11555: }
11556: my ($outcome,$deloutcome,$new_values,$translation) =
11557: &modify_access_controls($file_name,\%changes,$udom,$unum);
11558: unless ($outcome eq 'ok') {
11559: $errors .= $outcome.' ';
11560: }
11561: }
11562: }
11563: if ($errors) {
11564: $errors =~ s/\s$//;
11565: return $errors;
11566: } else {
11567: return 'ok';
11568: }
11569: }
11570:
11571: #------------------------------------------------------Get Marked as Read Only
11572:
11573: sub get_marked_as_readonly {
11574: my ($domain,$user,$what,$group) = @_;
11575: my $current_permissions = &get_portfile_permissions($domain,$user);
11576: my @readonly_files;
11577: my $cmp1=$what;
11578: if (ref($what)) { $cmp1=join('',@{$what}) };
11579: while (my ($file_name,$value) = each(%{$current_permissions})) {
11580: if (defined($group)) {
11581: if ($file_name !~ m-^\Q$group\E/-) {
11582: next;
11583: }
11584: }
11585: if (ref($value) eq "ARRAY"){
11586: foreach my $stored_what (@{$value}) {
11587: my $cmp2=$stored_what;
11588: if (ref($stored_what) eq 'ARRAY') {
11589: $cmp2=join('',@{$stored_what});
11590: }
11591: if ($cmp1 eq $cmp2) {
11592: push(@readonly_files, $file_name);
11593: last;
11594: } elsif (!defined($what)) {
11595: push(@readonly_files, $file_name);
11596: last;
11597: }
11598: }
11599: }
11600: }
11601: return @readonly_files;
11602: }
11603: #-----------------------------------------------------------Get Marked as Read Only Hash
11604:
11605: sub get_marked_as_readonly_hash {
11606: my ($current_permissions,$group,$what) = @_;
11607: my %readonly_files;
11608: while (my ($file_name,$value) = each(%{$current_permissions})) {
11609: if (defined($group)) {
11610: if ($file_name !~ m-^\Q$group\E/-) {
11611: next;
11612: }
11613: }
11614: if (ref($value) eq "ARRAY"){
11615: foreach my $stored_what (@{$value}) {
11616: if (ref($stored_what) eq 'ARRAY') {
11617: foreach my $lock_descriptor(@{$stored_what}) {
11618: if ($lock_descriptor eq 'graded') {
11619: $readonly_files{$file_name} = 'graded';
11620: } elsif ($lock_descriptor eq 'handback') {
11621: $readonly_files{$file_name} = 'handback';
11622: } else {
11623: if (!exists($readonly_files{$file_name})) {
11624: $readonly_files{$file_name} = 'locked';
11625: }
11626: }
11627: }
11628: }
11629: }
11630: }
11631: }
11632: return %readonly_files;
11633: }
11634: # ------------------------------------------------------------ Unmark as Read Only
11635:
11636: sub unmark_as_readonly {
11637: # unmarks $file_name (if $file_name is defined), or all files locked by $what
11638: # for portfolio submissions, $what contains [$symb,$crsid]
11639: my ($domain,$user,$what,$file_name,$group) = @_;
11640: $file_name = &declutter_portfile($file_name);
11641: my $symb_crs = $what;
11642: if (ref($what)) { $symb_crs=join('',@$what); }
11643: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
11644: my ($tmp)=keys(%current_permissions);
11645: if ($tmp=~/^error:/) { undef(%current_permissions); }
11646: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
11647: foreach my $file (@readonly_files) {
11648: my $clean_file = &declutter_portfile($file);
11649: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
11650: my $current_locks = $current_permissions{$file};
11651: my @new_locks;
11652: my @del_keys;
11653: if (ref($current_locks) eq "ARRAY"){
11654: foreach my $locker (@{$current_locks}) {
11655: my $compare=$locker;
11656: if (ref($locker) eq 'ARRAY') {
11657: $compare=join('',@{$locker});
11658: if ($compare ne $symb_crs) {
11659: push(@new_locks, $locker);
11660: }
11661: }
11662: }
11663: if (scalar(@new_locks) > 0) {
11664: $current_permissions{$file} = \@new_locks;
11665: } else {
11666: push(@del_keys, $file);
11667: &del('file_permissions',\@del_keys, $domain, $user);
11668: delete($current_permissions{$file});
11669: }
11670: }
11671: }
11672: &put('file_permissions',\%current_permissions,$domain,$user);
11673: return;
11674: }
11675:
11676: # ------------------------------------------------------------ Directory lister
11677:
11678: sub dirlist {
11679: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
11680: $uri=~s/^\///;
11681: $uri=~s/\/$//;
11682: my ($udom, $uname);
11683: if ($getuserdir) {
11684: $udom = $userdomain;
11685: $uname = $username;
11686: } else {
11687: (undef,$udom,$uname)=split(/\//,$uri);
11688: if(defined($userdomain)) {
11689: $udom = $userdomain;
11690: }
11691: if(defined($username)) {
11692: $uname = $username;
11693: }
11694: }
11695: my ($dirRoot,$listing,@listing_results);
11696:
11697: $dirRoot = $perlvar{'lonDocRoot'};
11698: if (defined($getpropath)) {
11699: $dirRoot = &propath($udom,$uname);
11700: $dirRoot =~ s/\/$//;
11701: } elsif (defined($getuserdir)) {
11702: my $subdir=$uname.'__';
11703: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
11704: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
11705: ."/$udom/$subdir/$uname";
11706: } elsif (defined($alternateRoot)) {
11707: $dirRoot = $alternateRoot;
11708: }
11709:
11710: if($udom) {
11711: if($uname) {
11712: my $uhome = &homeserver($uname,$udom);
11713: if ($uhome eq 'no_host') {
11714: return ([],'no_host');
11715: }
11716: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
11717: .$getuserdir.':'.&escape($dirRoot)
11718: .':'.&escape($uname).':'.&escape($udom),$uhome);
11719: if ($listing eq 'unknown_cmd') {
11720: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
11721: } else {
11722: @listing_results = map { &unescape($_); } split(/:/,$listing);
11723: }
11724: if ($listing eq 'unknown_cmd') {
11725: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
11726: @listing_results = split(/:/,$listing);
11727: } else {
11728: @listing_results = map { &unescape($_); } split(/:/,$listing);
11729: }
11730: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
11731: ($listing eq 'rejected') || ($listing eq 'refused') ||
11732: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
11733: return ([],$listing);
11734: } else {
11735: return (\@listing_results);
11736: }
11737: } elsif(!$alternateRoot) {
11738: my (%allusers,%listerror);
11739: my %servers = &get_servers($udom,'library');
11740: foreach my $tryserver (keys(%servers)) {
11741: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
11742: &escape($udom),$tryserver);
11743: if ($listing eq 'unknown_cmd') {
11744: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
11745: $udom, $tryserver);
11746: } else {
11747: @listing_results = map { &unescape($_); } split(/:/,$listing);
11748: }
11749: if ($listing eq 'unknown_cmd') {
11750: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
11751: $udom, $tryserver);
11752: @listing_results = split(/:/,$listing);
11753: } else {
11754: @listing_results =
11755: map { &unescape($_); } split(/:/,$listing);
11756: }
11757: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
11758: ($listing eq 'rejected') || ($listing eq 'refused') ||
11759: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
11760: $listerror{$tryserver} = $listing;
11761: } else {
11762: foreach my $line (@listing_results) {
11763: my ($entry) = split(/&/,$line,2);
11764: $allusers{$entry} = 1;
11765: }
11766: }
11767: }
11768: my @alluserslist=();
11769: foreach my $user (sort(keys(%allusers))) {
11770: push(@alluserslist,$user.'&user');
11771: }
11772:
11773: if (!%listerror) {
11774: # no errors
11775: return (\@alluserslist);
11776: } elsif (scalar(keys(%servers)) == 1) {
11777: # one library server, one error
11778: my ($key) = keys(%listerror);
11779: return (\@alluserslist, $listerror{$key});
11780: } elsif ( grep { $_ eq 'con_lost' } values(%listerror) ) {
11781: # con_lost indicates that we might miss data from at least one
11782: # library server
11783: return (\@alluserslist, 'con_lost');
11784: } else {
11785: # multiple library servers and no con_lost -> data should be
11786: # complete.
11787: return (\@alluserslist);
11788: }
11789:
11790: } else {
11791: return ([],'missing username');
11792: }
11793: } elsif(!defined($getpropath)) {
11794: my $path = $perlvar{'lonDocRoot'}.'/res/';
11795: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
11796: return (\@all_domains);
11797: } else {
11798: return ([],'missing domain');
11799: }
11800: }
11801:
11802: # --------------------------------------------- GetFileTimestamp
11803: # This function utilizes dirlist and returns the date stamp for
11804: # when it was last modified. It will also return an error of -1
11805: # if an error occurs
11806:
11807: sub GetFileTimestamp {
11808: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
11809: $studentDomain = &LONCAPA::clean_domain($studentDomain);
11810: $studentName = &LONCAPA::clean_username($studentName);
11811: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
11812: undef,$getuserdir);
11813: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
11814: return -1;
11815: }
11816: if (ref($fileref) eq 'ARRAY') {
11817: my @stats = split('&',$fileref->[0]);
11818: # @stats contains first the filename, then the stat output
11819: return $stats[10]; # so this is 10 instead of 9.
11820: } else {
11821: return -1;
11822: }
11823: }
11824:
11825: sub stat_file {
11826: my ($uri) = @_;
11827: $uri = &clutter_with_no_wrapper($uri);
11828:
11829: my ($udom,$uname,$file);
11830: if ($uri =~ m-^/(uploaded|editupload)/-) {
11831: ($udom,$uname,$file) =
11832: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
11833: $file = 'userfiles/'.$file;
11834: }
11835: if ($uri =~ m-^/res/-) {
11836: ($udom,$uname) =
11837: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
11838: $file = $uri;
11839: }
11840:
11841: if (!$udom || !$uname || !$file) {
11842: # unable to handle the uri
11843: return ();
11844: }
11845: my $getpropath;
11846: if ($file =~ /^userfiles\//) {
11847: $getpropath = 1;
11848: }
11849: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
11850: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
11851: return ();
11852: } else {
11853: if (ref($listref) eq 'ARRAY') {
11854: my @stats = split('&',$listref->[0]);
11855: shift(@stats); #filename is first
11856: return @stats;
11857: }
11858: }
11859: return ();
11860: }
11861:
11862: # --------------------------------------------------------- recursedirs
11863: # Recursive function to traverse either a specific user's Authoring Space
11864: # or corresponding Published Resource Space, and populate the hash ref:
11865: # $dirhashref with URLs of all directories, and if $filehashref hash
11866: # ref arg is provided, the URLs of any files, excluding versioned, .meta,
11867: # or .rights files in resource space, and .meta, .save, .log, and .bak
11868: # files in Authoring Space.
11869: #
11870: # Inputs:
11871: #
11872: # $is_home - true if current server is home server for user's space
11873: # $context - either: priv, or res respectively for Authoring or Resource Space.
11874: # $docroot - Document root (i.e., /home/httpd/html
11875: # $toppath - Top level directory (i.e., /res/$dom/$uname or /priv/$dom/$uname
11876: # $relpath - Current path (relative to top level).
11877: # $dirhashref - reference to hash to populate with URLs of directories (Required)
11878: # $filehashref - reference to hash to populate with URLs of files (Optional)
11879: #
11880: # Returns: nothing
11881: #
11882: # Side Effects: populates $dirhashref, and $filehashref (if provided).
11883: #
11884: # Currently used by interface/londocs.pm to create linked select boxes for
11885: # directory and filename to import a Course "Author" resource into a course, and
11886: # also to create linked select boxes for Authoring Space and Directory to choose
11887: # save location for creation of a new "standard" problem from the Course Editor.
11888: #
11889:
11890: sub recursedirs {
11891: my ($is_home,$context,$docroot,$toppath,$relpath,$dirhashref,$filehashref) = @_;
11892: return unless (ref($dirhashref) eq 'HASH');
11893: my $currpath = $docroot.$toppath;
11894: if ($relpath) {
11895: $currpath .= "/$relpath";
11896: }
11897: my $savefile;
11898: if (ref($filehashref)) {
11899: $savefile = 1;
11900: }
11901: if ($is_home) {
11902: if (opendir(my $dirh,$currpath)) {
11903: foreach my $item (sort { lc($a) cmp lc($b) } grep(!/^\.+$/,readdir($dirh))) {
11904: next if ($item eq '');
11905: if (-d "$currpath/$item") {
11906: my $newpath;
11907: if ($relpath) {
11908: $newpath = "$relpath/$item";
11909: } else {
11910: $newpath = $item;
11911: }
11912: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
11913: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
11914: } elsif ($savefile) {
11915: if ($context eq 'priv') {
11916: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
11917: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
11918: }
11919: } else {
11920: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/) || ($item =~ /\.rights$/)) {
11921: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
11922: }
11923: }
11924: }
11925: }
11926: closedir($dirh);
11927: }
11928: } else {
11929: my ($dirlistref,$listerror) =
11930: &dirlist($toppath.$relpath);
11931: my @dir_lines;
11932: my $dirptr=16384;
11933: if (ref($dirlistref) eq 'ARRAY') {
11934: foreach my $dir_line (sort
11935: {
11936: my ($afile)=split('&',$a,2);
11937: my ($bfile)=split('&',$b,2);
11938: return (lc($afile) cmp lc($bfile));
11939: } (@{$dirlistref})) {
11940: my ($item,$dom,undef,$testdir,undef,undef,undef,undef,$size,undef,$mtime,undef,undef,undef,$obs,undef) =
11941: split(/\&/,$dir_line,16);
11942: $item =~ s/\s+$//;
11943: next if (($item =~ /^\.\.?$/) || ($obs));
11944: if ($dirptr&$testdir) {
11945: my $newpath;
11946: if ($relpath) {
11947: $newpath = "$relpath/$item";
11948: } else {
11949: $relpath = '/';
11950: $newpath = $item;
11951: }
11952: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
11953: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
11954: } elsif ($savefile) {
11955: if ($context eq 'priv') {
11956: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
11957: $filehashref->{$relpath}{$item} = 1;
11958: }
11959: } else {
11960: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/)) {
11961: $filehashref->{$relpath}{$item} = 1;
11962: }
11963: }
11964: }
11965: }
11966: }
11967: }
11968: return;
11969: }
11970:
11971: # -------------------------------------------------------- Value of a Condition
11972:
11973: # gets the value of a specific preevaluated condition
11974: # stored in the string $env{user.state.<cid>}
11975: # or looks up a condition reference in the bighash and if if hasn't
11976: # already been evaluated recurses into docondval to get the value of
11977: # the condition, then memoizing it to
11978: # $env{user.state.<cid>.<condition>}
11979: sub directcondval {
11980: my $number=shift;
11981: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
11982: &Apache::lonuserstate::evalstate();
11983: }
11984: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
11985: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
11986: } elsif ($number =~ /^_/) {
11987: my $sub_condition;
11988: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11989: &GDBM_READER(),0640)) {
11990: $sub_condition=$bighash{'conditions'.$number};
11991: untie(%bighash);
11992: }
11993: my $value = &docondval($sub_condition);
11994: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
11995: return $value;
11996: }
11997: if ($env{'user.state.'.$env{'request.course.id'}}) {
11998: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
11999: } else {
12000: return 2;
12001: }
12002: }
12003:
12004: # get the collection of conditions for this resource
12005: sub condval {
12006: my $condidx=shift;
12007: my $allpathcond='';
12008: foreach my $cond (split(/\|/,$condidx)) {
12009: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
12010: $allpathcond.=
12011: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
12012: }
12013: }
12014: $allpathcond=~s/\|$//;
12015: return &docondval($allpathcond);
12016: }
12017:
12018: #evaluates an expression of conditions
12019: sub docondval {
12020: my ($allpathcond) = @_;
12021: my $result=0;
12022: if ($env{'request.course.id'}
12023: && defined($allpathcond)) {
12024: my $operand='|';
12025: my @stack;
12026: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
12027: if ($chunk eq '(') {
12028: push @stack,($operand,$result);
12029: } elsif ($chunk eq ')') {
12030: my $before=pop @stack;
12031: if (pop @stack eq '&') {
12032: $result=$result>$before?$before:$result;
12033: } else {
12034: $result=$result>$before?$result:$before;
12035: }
12036: } elsif (($chunk eq '&') || ($chunk eq '|')) {
12037: $operand=$chunk;
12038: } else {
12039: my $new=directcondval($chunk);
12040: if ($operand eq '&') {
12041: $result=$result>$new?$new:$result;
12042: } else {
12043: $result=$result>$new?$result:$new;
12044: }
12045: }
12046: }
12047: }
12048: return $result;
12049: }
12050:
12051: # ---------------------------------------------------- Devalidate courseresdata
12052:
12053: sub devalidatecourseresdata {
12054: my ($coursenum,$coursedomain)=@_;
12055: my $hashid=$coursenum.':'.$coursedomain;
12056: &devalidate_cache_new('courseres',$hashid);
12057: }
12058:
12059:
12060: # --------------------------------------------------- Course Resourcedata Query
12061: #
12062: # Parameters:
12063: # $coursenum - Number of the course.
12064: # $coursedomain - Domain at which the course was created.
12065: # Returns:
12066: # A hash of the course parameters along (I think) with timestamps
12067: # and version info.
12068:
12069: sub get_courseresdata {
12070: my ($coursenum,$coursedomain)=@_;
12071: my $coursehom=&homeserver($coursenum,$coursedomain);
12072: my $hashid=$coursenum.':'.$coursedomain;
12073: my ($result,$cached)=&is_cached_new('courseres',$hashid);
12074: my %dumpreply;
12075: unless (defined($cached)) {
12076: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
12077: $result=\%dumpreply;
12078: my ($tmp) = keys(%dumpreply);
12079: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
12080: &do_cache_new('courseres',$hashid,$result,600);
12081: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
12082: return $tmp;
12083: } elsif ($tmp =~ /^(error)/) {
12084: $result=undef;
12085: &do_cache_new('courseres',$hashid,$result,600);
12086: }
12087: }
12088: return $result;
12089: }
12090:
12091: sub devalidateuserresdata {
12092: my ($uname,$udom)=@_;
12093: my $hashid="$udom:$uname";
12094: &devalidate_cache_new('userres',$hashid);
12095: }
12096:
12097: sub get_userresdata {
12098: my ($uname,$udom)=@_;
12099: #most student don\'t have any data set, check if there is some data
12100: if (&EXT_cache_status($udom,$uname)) { return undef; }
12101:
12102: my $hashid="$udom:$uname";
12103: my ($result,$cached)=&is_cached_new('userres',$hashid);
12104: if (!defined($cached)) {
12105: my %resourcedata=&dump('resourcedata',$udom,$uname);
12106: $result=\%resourcedata;
12107: &do_cache_new('userres',$hashid,$result,600);
12108: }
12109: my ($tmp)=keys(%$result);
12110: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
12111: return $result;
12112: }
12113: #error 2 occurs when the .db doesn't exist
12114: if ($tmp!~/error: 2 /) {
12115: if ((!defined($cached)) || ($tmp ne 'con_lost')) {
12116: &logthis("<font color=\"blue\">WARNING:".
12117: " Trying to get resource data for ".
12118: $uname." at ".$udom.": ".
12119: $tmp."</font>");
12120: }
12121: } elsif ($tmp=~/error: 2 /) {
12122: #&EXT_cache_set($udom,$uname);
12123: &do_cache_new('userres',$hashid,undef,600);
12124: undef($tmp); # not really an error so don't send it back
12125: }
12126: return $tmp;
12127: }
12128: #----------------------------------------------- resdata - return resource data
12129: # Purpose:
12130: # Return resource data for either users or for a course.
12131: # Parameters:
12132: # $name - Course/user name.
12133: # $domain - Name of the domain the user/course is registered on.
12134: # $type - Type of thing $name is (must be 'course' or 'user')
12135: # $mapp - decluttered URL of enclosing map
12136: # $recursed - Ref to scalar -- set to 1, if nested maps have been recursed.
12137: # $recurseup - Ref to array of map URLs, starting with map containing
12138: # $mapp up through hierarchy of nested maps to top level map.
12139: # $courseid - CourseID (first part of param identifier).
12140: # $modifier - Middle part of param identifier.
12141: # $what - Last part of param identifier.
12142: # @which - Array of names of resources desired.
12143: # Returns:
12144: # The value of the first reasource in @which that is found in the
12145: # resource hash.
12146: # Exceptional Conditions:
12147: # If the $type passed in is not valid (not the string 'course' or
12148: # 'user', an undefined reference is returned.
12149: # If none of the resources are found, an undef is returned
12150: sub resdata {
12151: my ($name,$domain,$type,$mapp,$recursed,$recurseup,$courseid,
12152: $modifier,$what,@which)=@_;
12153: my $result;
12154: if ($type eq 'course') {
12155: $result=&get_courseresdata($name,$domain);
12156: } elsif ($type eq 'user') {
12157: $result=&get_userresdata($name,$domain);
12158: }
12159: if (!ref($result)) { return $result; }
12160: foreach my $item (@which) {
12161: if ($item->[1] eq 'course') {
12162: if ((ref($recurseup) eq 'ARRAY') && (ref($recursed) eq 'SCALAR')) {
12163: unless ($$recursed) {
12164: @{$recurseup} = &get_map_hierarchy($mapp,$courseid);
12165: $$recursed = 1;
12166: }
12167: foreach my $item (@${recurseup}) {
12168: my $norecursechk=$courseid.$modifier.$item.'___(all).'.$what;
12169: last if (defined($result->{$norecursechk}));
12170: my $recursechk=$courseid.$modifier.$item.'___(rec).'.$what;
12171: if (defined($result->{$recursechk})) { return [$result->{$recursechk},'map']; }
12172: }
12173: }
12174: }
12175: if (defined($result->{$item->[0]})) {
12176: return [$result->{$item->[0]},$item->[1]];
12177: }
12178: }
12179: return undef;
12180: }
12181:
12182: sub get_domain_lti {
12183: my ($cdom,$context) = @_;
12184: my ($name,%lti);
12185: if ($context eq 'consumer') {
12186: $name = 'ltitools';
12187: } elsif ($context eq 'provider') {
12188: $name = 'lti';
12189: } else {
12190: return %lti;
12191: }
12192: my ($result,$cached)=&is_cached_new($name,$cdom);
12193: if (defined($cached)) {
12194: if (ref($result) eq 'HASH') {
12195: %lti = %{$result};
12196: }
12197: } else {
12198: my %domconfig = &get_dom('configuration',[$name],$cdom);
12199: if (ref($domconfig{$name}) eq 'HASH') {
12200: %lti = %{$domconfig{$name}};
12201: my %encdomconfig = &get_dom('encconfig',[$name],$cdom,undef,1);
12202: if (ref($encdomconfig{$name}) eq 'HASH') {
12203: foreach my $id (keys(%lti)) {
12204: if (ref($encdomconfig{$name}{$id}) eq 'HASH') {
12205: foreach my $item ('key','secret') {
12206: $lti{$id}{$item} = $encdomconfig{$name}{$id}{$item};
12207: }
12208: }
12209: }
12210: }
12211: }
12212: my $cachetime = 24*60*60;
12213: &do_cache_new($name,$cdom,\%lti,$cachetime);
12214: }
12215: return %lti;
12216: }
12217:
12218: sub get_course_lti {
12219: my ($cnum,$cdom) = @_;
12220: my $hashid=$cdom.'_'.$cnum;
12221: my %courselti;
12222: my ($result,$cached)=&is_cached_new('courselti',$hashid);
12223: if (defined($cached)) {
12224: if (ref($result) eq 'HASH') {
12225: %courselti = %{$result};
12226: }
12227: } else {
12228: %courselti = &dump('lti',$cdom,$cnum,undef,undef,undef,1);
12229: my $cachetime = 24*60*60;
12230: &do_cache_new('courselti',$hashid,\%courselti,$cachetime);
12231: }
12232: return %courselti;
12233: }
12234:
12235: sub get_numsuppfiles {
12236: my ($cnum,$cdom,$ignorecache)=@_;
12237: my $hashid=$cnum.':'.$cdom;
12238: my ($suppcount,$cached);
12239: unless ($ignorecache) {
12240: ($suppcount,$cached) = &is_cached_new('suppcount',$hashid);
12241: }
12242: unless (defined($cached)) {
12243: my $chome=&homeserver($cnum,$cdom);
12244: unless ($chome eq 'no_host') {
12245: ($suppcount,my $supptools,my $errors) = (0,0,0);
12246: my $suppmap = 'supplemental.sequence';
12247: ($suppcount,$supptools,$errors) =
12248: &Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,
12249: $supptools,$errors);
12250: }
12251: &do_cache_new('suppcount',$hashid,$suppcount,600);
12252: }
12253: return $suppcount;
12254: }
12255:
12256: #
12257: # EXT resource caching routines
12258: #
12259:
12260: {
12261: # Cache (5 seconds) of map hierarchy for speedup of navmaps display
12262: #
12263: # The course for which we cache
12264: my $cachedmapkey='';
12265: # The cached recursive maps for this course
12266: my %cachedmaps=();
12267: # When this was last done
12268: my $cachedmaptime='';
12269:
12270: sub clear_EXT_cache_status {
12271: &delenv('cache.EXT.');
12272: }
12273:
12274: sub EXT_cache_status {
12275: my ($target_domain,$target_user) = @_;
12276: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
12277: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
12278: # We know already the user has no data
12279: return 1;
12280: } else {
12281: return 0;
12282: }
12283: }
12284:
12285: sub EXT_cache_set {
12286: my ($target_domain,$target_user) = @_;
12287: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
12288: #&appenv({$cachename => time});
12289: }
12290:
12291: # --------------------------------------------------------- Value of a Variable
12292: sub EXT {
12293:
12294: my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid,$recurseupref)=@_;
12295: unless ($varname) { return ''; }
12296: #get real user name/domain, courseid and symb
12297: my $courseid;
12298: my $publicuser;
12299: if ($symbparm) {
12300: $symbparm=&get_symb_from_alias($symbparm);
12301: }
12302: if (!($uname && $udom)) {
12303: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
12304: if (!$symbparm) { $symbparm=$cursymb; }
12305: } else {
12306: $courseid=$env{'request.course.id'};
12307: }
12308: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
12309: my $rest;
12310: if (defined($therest[0])) {
12311: $rest=join('.',@therest);
12312: } else {
12313: $rest='';
12314: }
12315:
12316: my $qualifierrest=$qualifier;
12317: if ($rest) { $qualifierrest.='.'.$rest; }
12318: my $spacequalifierrest=$space;
12319: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
12320: if ($realm eq 'user') {
12321: # --------------------------------------------------------------- user.resource
12322: if ($space eq 'resource') {
12323: if ( (defined($Apache::lonhomework::parsing_a_problem)
12324: || defined($Apache::lonhomework::parsing_a_task))
12325: &&
12326: ($symbparm eq &symbread()) ) {
12327: # if we are in the middle of processing the resource the
12328: # get the value we are planning on committing
12329: if (defined($Apache::lonhomework::results{$qualifierrest})) {
12330: return $Apache::lonhomework::results{$qualifierrest};
12331: } else {
12332: return $Apache::lonhomework::history{$qualifierrest};
12333: }
12334: } else {
12335: my %restored;
12336: if ($publicuser || $env{'request.state'} eq 'construct') {
12337: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
12338: } else {
12339: %restored=&restore($symbparm,$courseid,$udom,$uname);
12340: }
12341: return $restored{$qualifierrest};
12342: }
12343: # ----------------------------------------------------------------- user.access
12344: } elsif ($space eq 'access') {
12345: # FIXME - not supporting calls for a specific user
12346: return &allowed($qualifier,$rest);
12347: # ------------------------------------------ user.preferences, user.environment
12348: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
12349: if (($uname eq $env{'user.name'}) &&
12350: ($udom eq $env{'user.domain'})) {
12351: return $env{join('.',('environment',$qualifierrest))};
12352: } else {
12353: my %returnhash;
12354: if (!$publicuser) {
12355: %returnhash=&userenvironment($udom,$uname,
12356: $qualifierrest);
12357: }
12358: return $returnhash{$qualifierrest};
12359: }
12360: # ----------------------------------------------------------------- user.course
12361: } elsif ($space eq 'course') {
12362: # FIXME - not supporting calls for a specific user
12363: return $env{join('.',('request.course',$qualifier))};
12364: # ------------------------------------------------------------------- user.role
12365: } elsif ($space eq 'role') {
12366: # FIXME - not supporting calls for a specific user
12367: my ($role,$where)=split(/\./,$env{'request.role'});
12368: if ($qualifier eq 'value') {
12369: return $role;
12370: } elsif ($qualifier eq 'extent') {
12371: return $where;
12372: }
12373: # ----------------------------------------------------------------- user.domain
12374: } elsif ($space eq 'domain') {
12375: return $udom;
12376: # ------------------------------------------------------------------- user.name
12377: } elsif ($space eq 'name') {
12378: return $uname;
12379: # ---------------------------------------------------- Any other user namespace
12380: } else {
12381: my %reply;
12382: if (!$publicuser) {
12383: %reply=&get($space,[$qualifierrest],$udom,$uname);
12384: }
12385: return $reply{$qualifierrest};
12386: }
12387: } elsif ($realm eq 'query') {
12388: # ---------------------------------------------- pull stuff out of query string
12389: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
12390: [$spacequalifierrest]);
12391: return $env{'form.'.$spacequalifierrest};
12392: } elsif ($realm eq 'request') {
12393: # ------------------------------------------------------------- request.browser
12394: if ($space eq 'browser') {
12395: return $env{'browser.'.$qualifier};
12396: # ------------------------------------------------------------ request.filename
12397: } else {
12398: return $env{'request.'.$spacequalifierrest};
12399: }
12400: } elsif ($realm eq 'course') {
12401: # ---------------------------------------------------------- course.description
12402: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
12403: } elsif ($realm eq 'resource') {
12404:
12405: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
12406: if (!$symbparm) { $symbparm=&symbread(); }
12407: }
12408:
12409: if ($qualifier eq '') {
12410: if ($space eq 'title') {
12411: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
12412: return &gettitle($symbparm);
12413: }
12414:
12415: if ($space eq 'map') {
12416: my ($map) = &decode_symb($symbparm);
12417: return &symbread($map);
12418: }
12419: if ($space eq 'maptitle') {
12420: my ($map) = &decode_symb($symbparm);
12421: return &gettitle($map);
12422: }
12423: if ($space eq 'filename') {
12424: if ($symbparm) {
12425: return &clutter((&decode_symb($symbparm))[2]);
12426: }
12427: return &hreflocation('',$env{'request.filename'});
12428: }
12429:
12430: if ((defined($courseid)) && ($courseid eq $env{'request.course.id'}) && $symbparm) {
12431: if ($space eq 'visibleparts') {
12432: my $navmap = Apache::lonnavmaps::navmap->new();
12433: my $item;
12434: if (ref($navmap)) {
12435: my $res = $navmap->getBySymb($symbparm);
12436: my $parts = $res->parts();
12437: if (ref($parts) eq 'ARRAY') {
12438: $item = join(',',@{$parts});
12439: }
12440: undef($navmap);
12441: }
12442: return $item;
12443: }
12444: }
12445: }
12446:
12447: my ($section, $group, @groups, @recurseup, $recursed);
12448: if (ref($recurseupref) eq 'ARRAY') {
12449: @recurseup = @{$recurseupref};
12450: $recursed = 1;
12451: }
12452: my ($courselevelm,$courseleveli,$courselevel,$mapp);
12453: if (($courseid eq '') && ($cid)) {
12454: $courseid = $cid;
12455: }
12456: if (($symbparm && $courseid) &&
12457: (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid))) {
12458:
12459: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
12460:
12461: # ----------------------------------------------------- Cascading lookup scheme
12462: my $symbp=$symbparm;
12463: $mapp=&deversion((&decode_symb($symbp))[0]);
12464: my $symbparm=$symbp.'.'.$spacequalifierrest;
12465: my $recurseparm=$mapp.'___(rec).'.$spacequalifierrest;
12466: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
12467: if (($env{'user.name'} eq $uname) &&
12468: ($env{'user.domain'} eq $udom)) {
12469: $section=$env{'request.course.sec'};
12470: @groups = split(/:/,$env{'request.course.groups'});
12471: @groups=&sort_course_groups($courseid,@groups);
12472: } else {
12473: if (! defined($usection)) {
12474: $section=&getsection($udom,$uname,$courseid);
12475: } else {
12476: $section = $usection;
12477: }
12478: @groups = &get_users_groups($udom,$uname,$courseid);
12479: }
12480:
12481: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
12482: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
12483: my $secleveli=$courseid.'.['.$section.'].'.$recurseparm;
12484: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
12485:
12486: $courselevel=$courseid.'.'.$spacequalifierrest;
12487: my $courselevelr=$courseid.'.'.$symbparm;
12488: $courseleveli=$courseid.'.'.$recurseparm;
12489: $courselevelm=$courseid.'.'.$mapparm;
12490:
12491: # ----------------------------------------------------------- first, check user
12492:
12493: my $userreply=&resdata($uname,$udom,'user',$mapp,\$recursed,
12494: \@recurseup,$courseid,'.',$spacequalifierrest,
12495: ([$courselevelr,'resource'],
12496: [$courselevelm,'map' ],
12497: [$courseleveli,'map' ],
12498: [$courselevel, 'course' ]));
12499: if (defined($userreply)) { return &get_reply($userreply); }
12500:
12501: # ------------------------------------------------ second, check some of course
12502: my $coursereply;
12503: if (@groups > 0) {
12504: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
12505: $recurseparm,$mapparm,$spacequalifierrest,
12506: $mapp,\$recursed,\@recurseup);
12507: if (defined($coursereply)) { return &get_reply($coursereply); }
12508: }
12509:
12510: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
12511: $env{'course.'.$courseid.'.domain'},
12512: 'course',$mapp,\$recursed,\@recurseup,
12513: $courseid,'.['.$section.'].',$spacequalifierrest,
12514: ([$seclevelr, 'resource'],
12515: [$seclevelm, 'map' ],
12516: [$secleveli, 'map' ],
12517: [$seclevel, 'course' ],
12518: [$courselevelr,'resource']));
12519: if (defined($coursereply)) { return &get_reply($coursereply); }
12520:
12521: # ------------------------------------------------------ third, check map parms
12522: my %parmhash=();
12523: my $thisparm='';
12524: if (tie(%parmhash,'GDBM_File',
12525: $env{'request.course.fn'}.'_parms.db',
12526: &GDBM_READER(),0640)) {
12527: $thisparm=$parmhash{$symbparm};
12528: untie(%parmhash);
12529: }
12530: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
12531: }
12532: # ------------------------------------------ fourth, look in resource metadata
12533:
12534: my $what = $spacequalifierrest;
12535: $what=~s/\./\_/;
12536: my $filename;
12537: if (!$symbparm) { $symbparm=&symbread(); }
12538: if ($symbparm) {
12539: $filename=(&decode_symb($symbparm))[2];
12540: } else {
12541: $filename=$env{'request.filename'};
12542: }
12543: my $toolsymb;
12544: if (($filename =~ /ext\.tool$/) && ($what ne '0_gradable')) {
12545: $toolsymb = $symbparm;
12546: }
12547: my $metadata=&metadata($filename,$what,$toolsymb);
12548: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
12549: $metadata=&metadata($filename,'parameter_'.$what,$toolsymb);
12550: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
12551:
12552: # ----------------------------------------------- fifth, look in rest of course
12553: if ($symbparm && defined($courseid) &&
12554: $courseid eq $env{'request.course.id'}) {
12555: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
12556: $env{'course.'.$courseid.'.domain'},
12557: 'course',$mapp,\$recursed,\@recurseup,
12558: $courseid,'.',$spacequalifierrest,
12559: ([$courselevelm,'map' ],
12560: [$courseleveli,'map' ],
12561: [$courselevel, 'course']));
12562: if (defined($coursereply)) { return &get_reply($coursereply); }
12563: }
12564: # ------------------------------------------------------------------ Cascade up
12565: unless ($space eq '0') {
12566: my @parts=split(/_/,$space);
12567: my $id=pop(@parts);
12568: my $part=join('_',@parts);
12569: if ($part eq '') { $part='0'; }
12570: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
12571: $symbparm,$udom,$uname,$section,1);
12572: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
12573: }
12574: if ($recurse) { return undef; }
12575: my $pack_def=&packages_tab_default($filename,$varname,$toolsymb);
12576: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
12577: # ---------------------------------------------------- Any other user namespace
12578: } elsif ($realm eq 'environment') {
12579: # ----------------------------------------------------------------- environment
12580: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
12581: return $env{'environment.'.$spacequalifierrest};
12582: } else {
12583: if ($uname eq 'anonymous' && $udom eq '') {
12584: return '';
12585: }
12586: my %returnhash=&userenvironment($udom,$uname,
12587: $spacequalifierrest);
12588: return $returnhash{$spacequalifierrest};
12589: }
12590: } elsif ($realm eq 'system') {
12591: # ----------------------------------------------------------------- system.time
12592: if ($space eq 'time') {
12593: return time;
12594: }
12595: } elsif ($realm eq 'server') {
12596: # ----------------------------------------------------------------- system.time
12597: if ($space eq 'name') {
12598: return $ENV{'SERVER_NAME'};
12599: }
12600: } elsif ($realm eq 'client') {
12601: if ($space eq 'remote_addr') {
12602: return &get_requestor_ip();
12603: }
12604: }
12605: return '';
12606: }
12607:
12608: sub get_reply {
12609: my ($reply_value) = @_;
12610: if (ref($reply_value) eq 'ARRAY') {
12611: if (wantarray) {
12612: return @$reply_value;
12613: }
12614: return $reply_value->[0];
12615: } else {
12616: return $reply_value;
12617: }
12618: }
12619:
12620: sub check_group_parms {
12621: my ($courseid,$groups,$symbparm,$recurseparm,$mapparm,$what,$mapp,
12622: $recursed,$recurseupref) = @_;
12623: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$recurseparm,'map'],
12624: [$what,'course']);
12625: my $coursereply;
12626: foreach my $group (@{$groups}) {
12627: my @groupitems = ();
12628: foreach my $level (@levels) {
12629: my $item = $courseid.'.['.$group.'].'.$level->[0];
12630: push(@groupitems,[$item,$level->[1]]);
12631: }
12632: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
12633: $env{'course.'.$courseid.'.domain'},
12634: 'course',$mapp,$recursed,$recurseupref,
12635: $courseid,'.['.$group.'].',$what,
12636: @groupitems);
12637: last if (defined($coursereply));
12638: }
12639: return $coursereply;
12640: }
12641:
12642: sub get_map_hierarchy {
12643: my ($mapname,$courseid) = @_;
12644: my @recurseup = ();
12645: if ($mapname) {
12646: if (($cachedmapkey eq $courseid) &&
12647: (abs($cachedmaptime-time)<5)) {
12648: if (ref($cachedmaps{$mapname}) eq 'ARRAY') {
12649: return @{$cachedmaps{$mapname}};
12650: }
12651: }
12652: my $navmap = Apache::lonnavmaps::navmap->new();
12653: if (ref($navmap)) {
12654: @recurseup = $navmap->recurseup_maps($mapname);
12655: undef($navmap);
12656: $cachedmaps{$mapname} = \@recurseup;
12657: $cachedmaptime=time;
12658: $cachedmapkey=$courseid;
12659: }
12660: }
12661: return @recurseup;
12662: }
12663:
12664: }
12665:
12666: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
12667: my ($courseid,@groups) = @_;
12668: @groups = sort(@groups);
12669: return @groups;
12670: }
12671:
12672: sub packages_tab_default {
12673: my ($uri,$varname,$toolsymb)=@_;
12674: my (undef,$part,$name)=split(/\./,$varname);
12675:
12676: my (@extension,@specifics,$do_default);
12677: foreach my $package (split(/,/,&metadata($uri,'packages',$toolsymb))) {
12678: my ($pack_type,$pack_part)=split(/_/,$package,2);
12679: if ($pack_type eq 'default') {
12680: $do_default=1;
12681: } elsif ($pack_type eq 'extension') {
12682: push(@extension,[$package,$pack_type,$pack_part]);
12683: } elsif ($pack_part eq $part || $pack_type eq 'part') {
12684: # only look at packages defaults for packages that this id is
12685: push(@specifics,[$package,$pack_type,$pack_part]);
12686: }
12687: }
12688: # first look for a package that matches the requested part id
12689: foreach my $package (@specifics) {
12690: my (undef,$pack_type,$pack_part)=@{$package};
12691: next if ($pack_part ne $part);
12692: if (defined($packagetab{"$pack_type&$name&default"})) {
12693: return $packagetab{"$pack_type&$name&default"};
12694: }
12695: }
12696: # look for any possible matching non extension_ package
12697: foreach my $package (@specifics) {
12698: my (undef,$pack_type,$pack_part)=@{$package};
12699: if (defined($packagetab{"$pack_type&$name&default"})) {
12700: return $packagetab{"$pack_type&$name&default"};
12701: }
12702: if ($pack_type eq 'part') { $pack_part='0'; }
12703: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
12704: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
12705: }
12706: }
12707: # look for any posible extension_ match
12708: foreach my $package (@extension) {
12709: my ($package,$pack_type)=@{$package};
12710: if (defined($packagetab{"$pack_type&$name&default"})) {
12711: return $packagetab{"$pack_type&$name&default"};
12712: }
12713: if (defined($packagetab{$package."&$name&default"})) {
12714: return $packagetab{$package."&$name&default"};
12715: }
12716: }
12717: # look for a global default setting
12718: if ($do_default && defined($packagetab{"default&$name&default"})) {
12719: return $packagetab{"default&$name&default"};
12720: }
12721: return undef;
12722: }
12723:
12724: sub add_prefix_and_part {
12725: my ($prefix,$part)=@_;
12726: my $keyroot;
12727: if (defined($prefix) && $prefix !~ /^__/) {
12728: # prefix that has a part already
12729: $keyroot=$prefix;
12730: } elsif (defined($prefix)) {
12731: # prefix that is missing a part
12732: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
12733: } else {
12734: # no prefix at all
12735: if (defined($part)) { $keyroot='_'.$part; }
12736: }
12737: return $keyroot;
12738: }
12739:
12740: # ---------------------------------------------------------------- Get metadata
12741:
12742: my %metaentry;
12743: my %importedpartids;
12744: my %importedrespids;
12745: sub metadata {
12746: my ($uri,$what,$toolsymb,$liburi,$prefix,$depthcount)=@_;
12747: $uri=&declutter($uri);
12748: # if it is a non metadata possible uri return quickly
12749: if (($uri eq '') ||
12750: (($uri =~ m|^/*adm/|) &&
12751: ($uri !~ m|^adm/includes|) && ($uri !~ m{/(smppg|bulletinboard|ext\.tool)$})) ||
12752: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
12753: return undef;
12754: }
12755: if (($uri =~ /^priv/ || $uri=~m{^home/httpd/html/priv})
12756: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
12757: return undef;
12758: }
12759: my $filename=$uri;
12760: $uri=~s/\.meta$//;
12761: #
12762: # Is the metadata already cached?
12763: # Look at timestamp of caching
12764: # Everything is cached by the main uri, libraries are never directly cached
12765: #
12766: if (!defined($liburi)) {
12767: my ($result,$cached)=&is_cached_new('meta',$uri);
12768: if (defined($cached)) { return $result->{':'.$what}; }
12769: }
12770:
12771: #
12772: # If the uri is for an external tool the file from
12773: # which metadata should be retrieved depends on whether
12774: # the tool had been configured to be gradable (set in the Course
12775: # Editor or Resource Editor).
12776: #
12777: # If a valid symb has been included as the third arg in the call
12778: # to &metadata() that can be used to retrieve the value of
12779: # parameter_0_gradable set for the resource, and included in the
12780: # uploaded map containing the tool. The value is retrieved via
12781: # &EXT(), if a valid symb is available. Otherwise the value of
12782: # gradable in the exttool_$marker.db file for the tool instance
12783: # is retrieved via &get().
12784: #
12785: # When lonuserstate::traceroute() calls lonnet::EXT() for
12786: # hiddenresource and encrypturl (during course initialization)
12787: # the map-level parameter for resource.0.gradable included in the
12788: # uploaded map containing the tool will not yet have been stored
12789: # in the user_course_parms.db file for the user's session, so in
12790: # this case fall back to retrieving gradable status from the
12791: # exttool_$marker.db file.
12792: #
12793: # In order to avoid an infinite loop, &metadata() will return
12794: # before a call to &EXT(), if the uri is for an external tool
12795: # and the $what for which metadata is being requested is
12796: # parameter_0_gradable or 0_gradable.
12797: #
12798:
12799: if ($uri =~ /ext\.tool$/) {
12800: if (($what eq 'parameter_0_gradable') || ($what eq '0_gradable')) {
12801: return;
12802: } else {
12803: my ($checked,$use_passback);
12804: if ($toolsymb ne '') {
12805: (undef,undef,my $tooluri) = &decode_symb($toolsymb);
12806: if (($tooluri eq $uri) && (&EXT('resource.0.gradable',$toolsymb))) {
12807: $checked = 1;
12808: if (&EXT('resource.0.gradable',$toolsymb) =~ /^yes$/i) {
12809: $use_passback = 1;
12810: }
12811: }
12812: }
12813: unless ($checked) {
12814: my ($ignore,$cdom,$cnum,$marker) = split(m{/},$uri);
12815: $marker=~s/\D//g;
12816: if ($marker) {
12817: my %toolsettings=&get('exttool_'.$marker,['gradable'],$cdom,$cnum);
12818: $use_passback = $toolsettings{'gradable'};
12819: }
12820: }
12821: if ($use_passback) {
12822: $filename = '/home/httpd/html/res/lib/templates/LTIpassback.tool';
12823: } else {
12824: $filename = '/home/httpd/html/res/lib/templates/LTIstandard.tool';
12825: }
12826: }
12827: }
12828:
12829: {
12830: # Imported parts would go here
12831: my @origfiletagids=();
12832: my $importedparts=0;
12833:
12834: # Imported responseids would go here
12835: my $importedresponses=0;
12836: #
12837: # Is this a recursive call for a library?
12838: #
12839: # if (! exists($metacache{$uri})) {
12840: # $metacache{$uri}={};
12841: # }
12842: my $cachetime = 60*60;
12843: if ($liburi) {
12844: $liburi=&declutter($liburi);
12845: $filename=$liburi;
12846: } else {
12847: &devalidate_cache_new('meta',$uri);
12848: undef(%metaentry);
12849: }
12850: my %metathesekeys=();
12851: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
12852: my $metastring;
12853: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
12854: my $which = &hreflocation('','/'.($liburi || $uri));
12855: $metastring =
12856: &Apache::lonnet::ssi_body($which,
12857: ('grade_target' => 'meta'));
12858: $cachetime = 1; # only want this cached in the child not long term
12859: } elsif (($uri !~ m -^(editupload)/-) &&
12860: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
12861: my $file=&filelocation('',&clutter($filename));
12862: #push(@{$metaentry{$uri.'.file'}},$file);
12863: $metastring=&getfile($file);
12864: }
12865: my $parser=HTML::LCParser->new(\$metastring);
12866: my $token;
12867: undef %metathesekeys;
12868: while ($token=$parser->get_token) {
12869: if ($token->[0] eq 'S') {
12870: if (defined($token->[2]->{'package'})) {
12871: #
12872: # This is a package - get package info
12873: #
12874: my $package=$token->[2]->{'package'};
12875: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
12876: if (defined($token->[2]->{'id'})) {
12877: $keyroot.='_'.$token->[2]->{'id'};
12878: }
12879: if ($metaentry{':packages'}) {
12880: $metaentry{':packages'}.=','.$package.$keyroot;
12881: } else {
12882: $metaentry{':packages'}=$package.$keyroot;
12883: }
12884: foreach my $pack_entry (keys(%packagetab)) {
12885: my $part=$keyroot;
12886: $part=~s/^\_//;
12887: if ($pack_entry=~/^\Q$package\E\&/ ||
12888: $pack_entry=~/^\Q$package\E_0\&/) {
12889: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
12890: # ignore package.tab specified default values
12891: # here &package_tab_default() will fetch those
12892: if ($subp eq 'default') { next; }
12893: my $value=$packagetab{$pack_entry};
12894: my $unikey;
12895: if ($pack =~ /_0$/) {
12896: $unikey='parameter_0_'.$name;
12897: $part=0;
12898: } else {
12899: $unikey='parameter'.$keyroot.'_'.$name;
12900: }
12901: if ($subp eq 'display') {
12902: $value.=' [Part: '.$part.']';
12903: }
12904: $metaentry{':'.$unikey.'.part'}=$part;
12905: $metathesekeys{$unikey}=1;
12906: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
12907: $metaentry{':'.$unikey.'.'.$subp}=$value;
12908: }
12909: if (defined($metaentry{':'.$unikey.'.default'})) {
12910: $metaentry{':'.$unikey}=
12911: $metaentry{':'.$unikey.'.default'};
12912: }
12913: }
12914: }
12915: } else {
12916: #
12917: # This is not a package - some other kind of start tag
12918: #
12919: my $entry=$token->[1];
12920: my $unikey='';
12921:
12922: if ($entry eq 'import') {
12923: #
12924: # Importing a library here
12925: #
12926: my $location=$parser->get_text('/import');
12927: my $dir=$filename;
12928: $dir=~s|[^/]*$||;
12929: $location=&filelocation($dir,$location);
12930:
12931: my $importid=$token->[2]->{'id'};
12932: my $importmode=$token->[2]->{'importmode'};
12933: #
12934: # Check metadata for imported file to
12935: # see if it contained response items
12936: #
12937: my ($origfile,@libfilekeys);
12938: my %currmetaentry = %metaentry;
12939: @libfilekeys = split(/,/,&metadata($location,'keys',undef,undef,undef,
12940: $depthcount+1));
12941: if (grep(/^responseorder$/,@libfilekeys)) {
12942: my $libresponseorder = &metadata($location,'responseorder',undef,undef,
12943: undef,$depthcount+1);
12944: if ($libresponseorder ne '') {
12945: if ($#origfiletagids<0) {
12946: undef(%importedrespids);
12947: undef(%importedpartids);
12948: }
12949: my @respids = split(/\s*,\s*/,$libresponseorder);
12950: if (@respids) {
12951: $importedrespids{$importid} = join(',',map { $importid.'_'.$_ } @respids);
12952: }
12953: if ($importedrespids{$importid} ne '') {
12954: $importedresponses = 1;
12955: # We need to get the original file and the imported file to get the response order correct
12956: # Load and inspect original file
12957: if ($#origfiletagids<0) {
12958: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
12959: $origfile=&getfile($origfilelocation);
12960: @origfiletagids=($origfile=~/<((?:\w+)response|import|part)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12961: }
12962: }
12963: }
12964: }
12965: # Do not overwrite contents of %metaentry hash for resource itself with
12966: # hash populated for imported library file
12967: %metaentry = %currmetaentry;
12968: undef(%currmetaentry);
12969: if ($importmode eq 'part') {
12970: # Import as part(s)
12971: $importedparts=1;
12972: # We need to get the original file and the imported file to get the part order correct
12973: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
12974: # Load and inspect original file if we didn't do that already
12975: if ($#origfiletagids<0) {
12976: undef(%importedrespids);
12977: undef(%importedpartids);
12978: if ($origfile eq '') {
12979: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
12980: $origfile=&getfile($origfilelocation);
12981: @origfiletagids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12982: }
12983: }
12984: my @impfilepartids;
12985: # If <partorder> tag is included in metadata for the imported file
12986: # get the parts in the imported file from that.
12987: if (grep(/^partorder$/,@libfilekeys)) {
12988: %currmetaentry = %metaentry;
12989: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
12990: $depthcount+1);
12991: %metaentry = %currmetaentry;
12992: undef(%currmetaentry);
12993: if ($libpartorder ne '') {
12994: @impfilepartids=split(/\s*,\s*/,$libpartorder);
12995: }
12996: } else {
12997: # If no <partorder> tag available, load and inspect imported file
12998: my $impfile=&getfile($location);
12999: @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
13000: }
13001: if ($#impfilepartids>=0) {
13002: # This problem had parts
13003: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
13004: } else {
13005: # Importing by turning a single problem into a problem part
13006: # It gets the import-tags ID as part-ID
13007: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
13008: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
13009: }
13010: } else {
13011: # Import as problem or as normal import
13012: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
13013: unless ($importmode eq 'problem') {
13014: # Normal import
13015: if (defined($token->[2]->{'id'})) {
13016: $unikey.='_'.$token->[2]->{'id'};
13017: }
13018: }
13019: # Check metadata for imported file to
13020: # see if it contained parts
13021: if (grep(/^partorder$/,@libfilekeys)) {
13022: %currmetaentry = %metaentry;
13023: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
13024: $depthcount+1);
13025: %metaentry = %currmetaentry;
13026: undef(%currmetaentry);
13027: if ($libpartorder ne '') {
13028: $importedparts = 1;
13029: $importedpartids{$token->[2]->{'id'}}=$libpartorder;
13030: }
13031: }
13032: }
13033: if ($depthcount<20) {
13034: my $metadata =
13035: &metadata($uri,'keys',$toolsymb,$location,$unikey,
13036: $depthcount+1);
13037: foreach my $meta (split(',',$metadata)) {
13038: $metaentry{':'.$meta}=$metaentry{':'.$meta};
13039: $metathesekeys{$meta}=1;
13040: }
13041: }
13042: } else {
13043: #
13044: # Not importing, some other kind of non-package, non-library start tag
13045: #
13046: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
13047: if (defined($token->[2]->{'id'})) {
13048: $unikey.='_'.$token->[2]->{'id'};
13049: }
13050: if (defined($token->[2]->{'name'})) {
13051: $unikey.='_'.$token->[2]->{'name'};
13052: }
13053: $metathesekeys{$unikey}=1;
13054: foreach my $param (@{$token->[3]}) {
13055: $metaentry{':'.$unikey.'.'.$param} =
13056: $token->[2]->{$param};
13057: }
13058: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
13059: my $default=$metaentry{':'.$unikey.'.default'};
13060: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
13061: # only ws inside the tag, and not in default, so use default
13062: # as value
13063: $metaentry{':'.$unikey}=$default;
13064: } elsif ( $internaltext =~ /\S/ ) {
13065: # something interesting inside the tag
13066: $metaentry{':'.$unikey}=$internaltext;
13067: } else {
13068: # no interesting values, don't set a default
13069: }
13070: # end of not-a-package not-a-library import
13071: }
13072: # end of not-a-package start tag
13073: }
13074: # the next is the end of "start tag"
13075: }
13076: }
13077: my ($extension) = ($uri =~ /\.(\w+)$/);
13078: $extension = lc($extension);
13079: if ($extension eq 'htm') { $extension='html'; }
13080:
13081: foreach my $key (keys(%packagetab)) {
13082: #no specific packages #how's our extension
13083: if ($key!~/^extension_\Q$extension\E&/) { next; }
13084: &metadata_create_package_def($uri,$key,'extension_'.$extension,
13085: \%metathesekeys);
13086: }
13087:
13088: if (!exists($metaentry{':packages'})
13089: || $packagetab{"import_defaults&extension_$extension"}) {
13090: foreach my $key (keys(%packagetab)) {
13091: #no specific packages well let's get default then
13092: if ($key!~/^default&/) { next; }
13093: &metadata_create_package_def($uri,$key,'default',
13094: \%metathesekeys);
13095: }
13096: }
13097: # are there custom rights to evaluate
13098: if ($metaentry{':copyright'} eq 'custom') {
13099:
13100: #
13101: # Importing a rights file here
13102: #
13103: unless ($depthcount) {
13104: my $location=$metaentry{':customdistributionfile'};
13105: my $dir=$filename;
13106: $dir=~s|[^/]*$||;
13107: $location=&filelocation($dir,$location);
13108: my $rights_metadata =
13109: &metadata($uri,'keys',$toolsymb,$location,'_rights',
13110: $depthcount+1);
13111: foreach my $rights (split(',',$rights_metadata)) {
13112: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
13113: $metathesekeys{$rights}=1;
13114: }
13115: }
13116: }
13117: # uniqifiy package listing
13118: my %seen;
13119: my @uniq_packages =
13120: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
13121: $metaentry{':packages'} = join(',',@uniq_packages);
13122:
13123: if (($importedresponses) || ($importedparts)) {
13124: if ($importedparts) {
13125: # We had imported parts and need to rebuild partorder
13126: $metaentry{':partorder'}='';
13127: $metathesekeys{'partorder'}=1;
13128: }
13129: if ($importedresponses) {
13130: # We had imported responses and need to rebuil responseorder
13131: $metaentry{':responseorder'}='';
13132: $metathesekeys{'responseorder'}=1;
13133: }
13134: for (my $index=0;$index<$#origfiletagids;$index+=2) {
13135: my $origid = $origfiletagids[$index+1];
13136: if ($origfiletagids[$index] eq 'part') {
13137: # Original part, part of the problem
13138: if ($importedparts) {
13139: $metaentry{':partorder'}.=','.$origid;
13140: }
13141: } elsif ($origfiletagids[$index] eq 'import') {
13142: if ($importedparts) {
13143: # We have imported parts at this position
13144: if ($importedpartids{$origid} ne '') {
13145: $metaentry{':partorder'}.=','.$importedpartids{$origid};
13146: }
13147: }
13148: if ($importedresponses) {
13149: # We have imported responses at this position
13150: if ($importedrespids{$origid} ne '') {
13151: $metaentry{':responseorder'}.=','.$importedrespids{$origid};
13152: }
13153: }
13154: } else {
13155: # Original response item, part of the problem
13156: if ($importedresponses) {
13157: $metaentry{':responseorder'}.=','.$origid;
13158: }
13159: }
13160: }
13161: if ($importedparts) {
13162: $metaentry{':partorder'}=~s/^\,//;
13163: }
13164: if ($importedresponses) {
13165: $metaentry{':responseorder'}=~s/^\,//;
13166: }
13167: }
13168: $metaentry{':keys'} = join(',',keys(%metathesekeys));
13169: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
13170: $metaentry{':allpossiblekeys'}=join(',',keys(%metathesekeys));
13171: unless ($liburi) {
13172: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
13173: }
13174: # this is the end of "was not already recently cached
13175: }
13176: return $metaentry{':'.$what};
13177: }
13178:
13179: sub metadata_create_package_def {
13180: my ($uri,$key,$package,$metathesekeys)=@_;
13181: my ($pack,$name,$subp)=split(/\&/,$key);
13182: if ($subp eq 'default') { next; }
13183:
13184: if (defined($metaentry{':packages'})) {
13185: $metaentry{':packages'}.=','.$package;
13186: } else {
13187: $metaentry{':packages'}=$package;
13188: }
13189: my $value=$packagetab{$key};
13190: my $unikey;
13191: $unikey='parameter_0_'.$name;
13192: $metaentry{':'.$unikey.'.part'}=0;
13193: $$metathesekeys{$unikey}=1;
13194: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
13195: $metaentry{':'.$unikey.'.'.$subp}=$value;
13196: }
13197: if (defined($metaentry{':'.$unikey.'.default'})) {
13198: $metaentry{':'.$unikey}=
13199: $metaentry{':'.$unikey.'.default'};
13200: }
13201: }
13202:
13203: sub metadata_generate_part0 {
13204: my ($metadata,$metacache,$uri) = @_;
13205: my %allnames;
13206: foreach my $metakey (keys(%$metadata)) {
13207: if ($metakey=~/^parameter\_(.*)/) {
13208: my $part=$$metacache{':'.$metakey.'.part'};
13209: my $name=$$metacache{':'.$metakey.'.name'};
13210: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
13211: $allnames{$name}=$part;
13212: }
13213: }
13214: }
13215: foreach my $name (keys(%allnames)) {
13216: $$metadata{"parameter_0_$name"}=1;
13217: my $key=":parameter_0_$name";
13218: $$metacache{"$key.part"}='0';
13219: $$metacache{"$key.name"}=$name;
13220: $$metacache{"$key.type"}=$$metacache{':parameter_'.
13221: $allnames{$name}.'_'.$name.
13222: '.type'};
13223: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
13224: '.display'};
13225: my $expr='[Part: '.$allnames{$name}.']';
13226: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
13227: $$metacache{"$key.display"}=$olddis;
13228: }
13229: }
13230:
13231: # ------------------------------------------------------ Devalidate title cache
13232:
13233: sub devalidate_title_cache {
13234: my ($url)=@_;
13235: if (!$env{'request.course.id'}) { return; }
13236: my $symb=&symbread($url);
13237: if (!$symb) { return; }
13238: my $key=$env{'request.course.id'}."\0".$symb;
13239: &devalidate_cache_new('title',$key);
13240: }
13241:
13242: # ------------------------------------------------- Get the title of a course
13243:
13244: sub current_course_title {
13245: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
13246: }
13247: # ------------------------------------------------- Get the title of a resource
13248:
13249: sub gettitle {
13250: my $urlsymb=shift;
13251: my $symb=&symbread($urlsymb);
13252: if ($symb) {
13253: my $key=$env{'request.course.id'}."\0".$symb;
13254: my ($result,$cached)=&is_cached_new('title',$key);
13255: if (defined($cached)) {
13256: return $result;
13257: }
13258: my ($map,$resid,$url)=&decode_symb($symb);
13259: my $title='';
13260: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
13261: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
13262: } else {
13263: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
13264: &GDBM_READER(),0640)) {
13265: my $mapid=$bighash{'map_pc_'.&clutter($map)};
13266: $title=$bighash{'title_'.$mapid.'.'.$resid};
13267: untie(%bighash);
13268: }
13269: }
13270: $title=~s/\&colon\;/\:/gs;
13271: if ($title) {
13272: # Remember both $symb and $title for dynamic metadata
13273: $accesshash{$symb.'___crstitle'}=$title;
13274: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
13275: # Cache this title and then return it
13276: return &do_cache_new('title',$key,$title,600);
13277: }
13278: $urlsymb=$url;
13279: }
13280: my $title=&metadata($urlsymb,'title');
13281: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
13282: return $title;
13283: }
13284:
13285: sub get_slot {
13286: my ($which,$cnum,$cdom)=@_;
13287: if (!$cnum || !$cdom) {
13288: (undef,my $courseid)=&whichuser();
13289: $cdom=$env{'course.'.$courseid.'.domain'};
13290: $cnum=$env{'course.'.$courseid.'.num'};
13291: }
13292: my $key=join("\0",'slots',$cdom,$cnum,$which);
13293: my %slotinfo;
13294: if (exists($remembered{$key})) {
13295: $slotinfo{$which} = $remembered{$key};
13296: } else {
13297: %slotinfo=&get('slots',[$which],$cdom,$cnum);
13298: &Apache::lonhomework::showhash(%slotinfo);
13299: my ($tmp)=keys(%slotinfo);
13300: if ($tmp=~/^error:/) { return (); }
13301: $remembered{$key} = $slotinfo{$which};
13302: }
13303: if (ref($slotinfo{$which}) eq 'HASH') {
13304: return %{$slotinfo{$which}};
13305: }
13306: return $slotinfo{$which};
13307: }
13308:
13309: sub get_reservable_slots {
13310: my ($cnum,$cdom,$uname,$udom) = @_;
13311: my $now = time;
13312: my $reservable_info;
13313: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
13314: if (exists($remembered{$key})) {
13315: $reservable_info = $remembered{$key};
13316: } else {
13317: my %resv;
13318: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
13319: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
13320: $reservable_info = \%resv;
13321: $remembered{$key} = $reservable_info;
13322: }
13323: return $reservable_info;
13324: }
13325:
13326: sub get_course_slots {
13327: my ($cnum,$cdom) = @_;
13328: my $hashid=$cnum.':'.$cdom;
13329: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
13330: if (defined($cached)) {
13331: if (ref($result) eq 'HASH') {
13332: return %{$result};
13333: }
13334: } else {
13335: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
13336: my ($tmp) = keys(%slots);
13337: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
13338: &do_cache_new('allslots',$hashid,\%slots,600);
13339: return %slots;
13340: }
13341: }
13342: return;
13343: }
13344:
13345: sub devalidate_slots_cache {
13346: my ($cnum,$cdom)=@_;
13347: my $hashid=$cnum.':'.$cdom;
13348: &devalidate_cache_new('allslots',$hashid);
13349: }
13350:
13351: sub get_coursechange {
13352: my ($cdom,$cnum) = @_;
13353: if ($cdom eq '' || $cnum eq '') {
13354: return unless ($env{'request.course.id'});
13355: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
13356: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
13357: }
13358: my $hashid=$cdom.'_'.$cnum;
13359: my ($change,$cached)=&is_cached_new('crschange',$hashid);
13360: if ((defined($cached)) && ($change ne '')) {
13361: return $change;
13362: } else {
13363: my %crshash;
13364: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
13365: if ($crshash{'internal.contentchange'} eq '') {
13366: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
13367: if ($change eq '') {
13368: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
13369: $change = $crshash{'internal.created'};
13370: }
13371: } else {
13372: $change = $crshash{'internal.contentchange'};
13373: }
13374: my $cachetime = 600;
13375: &do_cache_new('crschange',$hashid,$change,$cachetime);
13376: }
13377: return $change;
13378: }
13379:
13380: sub devalidate_coursechange_cache {
13381: my ($cnum,$cdom)=@_;
13382: my $hashid=$cnum.':'.$cdom;
13383: &devalidate_cache_new('crschange',$hashid);
13384: }
13385:
13386: # ------------------------------------------------- Update symbolic store links
13387:
13388: sub symblist {
13389: my ($mapname,%newhash)=@_;
13390: $mapname=&deversion(&declutter($mapname));
13391: my %hash;
13392: if (($env{'request.course.fn'}) && (%newhash)) {
13393: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
13394: &GDBM_WRCREAT(),0640)) {
13395: foreach my $url (keys(%newhash)) {
13396: next if ($url eq 'last_known'
13397: && $env{'form.no_update_last_known'});
13398: $hash{declutter($url)}=&encode_symb($mapname,
13399: $newhash{$url}->[1],
13400: $newhash{$url}->[0]);
13401: }
13402: if (untie(%hash)) {
13403: return 'ok';
13404: }
13405: }
13406: }
13407: return 'error';
13408: }
13409:
13410: # --------------------------------------------------------------- Verify a symb
13411:
13412: sub symbverify {
13413: my ($symb,$thisurl,$encstate)=@_;
13414: my $thisfn=$thisurl;
13415: $thisfn=&declutter($thisfn);
13416: # direct jump to resource in page or to a sequence - will construct own symbs
13417: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
13418: # check URL part
13419: my ($map,$resid,$url)=&decode_symb($symb);
13420:
13421: unless ($url eq $thisfn) { return 0; }
13422:
13423: $symb=&symbclean($symb);
13424: $thisurl=&deversion($thisurl);
13425: $thisfn=&deversion($thisfn);
13426:
13427: my %bighash;
13428: my $okay=0;
13429:
13430: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
13431: &GDBM_READER(),0640)) {
13432: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
13433: $thisurl =~ s/\?.+$//;
13434: if ($map =~ m{^uploaded/.+\.page$}) {
13435: $thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
13436: $thisurl =~ s{^\Qhttp://https://\E}{https://};
13437: }
13438: }
13439: my $ids;
13440: if ($map =~ m{^uploaded/.+\.page$}) {
13441: $ids=$bighash{'ids_'.&clutter_with_no_wrapper($thisurl)};
13442: } else {
13443: $ids=$bighash{'ids_'.&clutter($thisurl)};
13444: }
13445: unless ($ids) {
13446: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
13447: $ids=$bighash{$idkey};
13448: }
13449: if ($ids) {
13450: # ------------------------------------------------------------------- Has ID(s)
13451: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
13452: $symb =~ s/\?.+$//;
13453: }
13454: foreach my $id (split(/\,/,$ids)) {
13455: my ($mapid,$resid)=split(/\./,$id);
13456: if (
13457: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
13458: eq $symb) {
13459: if (ref($encstate)) {
13460: $$encstate = $bighash{'encrypted_'.$id};
13461: }
13462: if (($env{'request.role.adv'}) ||
13463: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
13464: ($thisurl eq '/adm/navmaps')) {
13465: $okay=1;
13466: last;
13467: }
13468: }
13469: }
13470: }
13471: untie(%bighash);
13472: }
13473: return $okay;
13474: }
13475:
13476: # --------------------------------------------------------------- Clean-up symb
13477:
13478: sub symbclean {
13479: my $symb=shift;
13480: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
13481: # remove version from map
13482: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
13483:
13484: # remove version from URL
13485: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
13486:
13487: # remove wrapper
13488:
13489: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
13490: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
13491: return $symb;
13492: }
13493:
13494: # ---------------------------------------------- Split symb to find map and url
13495:
13496: sub encode_symb {
13497: my ($map,$resid,$url)=@_;
13498: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
13499: }
13500:
13501: sub decode_symb {
13502: my $symb=shift;
13503: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
13504: my ($map,$resid,$url)=split(/___/,$symb);
13505: return (&fixversion($map),$resid,&fixversion($url));
13506: }
13507:
13508: sub fixversion {
13509: my $fn=shift;
13510: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
13511: my %bighash;
13512: my $uri=&clutter($fn);
13513: my $key=$env{'request.course.id'}.'_'.$uri;
13514: # is this cached?
13515: my ($result,$cached)=&is_cached_new('courseresversion',$key);
13516: if (defined($cached)) { return $result; }
13517: # unfortunately not cached, or expired
13518: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
13519: &GDBM_READER(),0640)) {
13520: if ($bighash{'version_'.$uri}) {
13521: my $version=$bighash{'version_'.$uri};
13522: unless (($version eq 'mostrecent') ||
13523: ($version==&getversion($uri))) {
13524: $uri=~s/\.(\w+)$/\.$version\.$1/;
13525: }
13526: }
13527: untie %bighash;
13528: }
13529: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
13530: }
13531:
13532: sub deversion {
13533: my $url=shift;
13534: $url=~s/\.\d+\.(\w+)$/\.$1/;
13535: return $url;
13536: }
13537:
13538: # ------------------------------------------------------ Return symb list entry
13539:
13540: sub symbread {
13541: my ($thisfn,$donotrecurse,$ignorecachednull,$checkforblock,$possibles,
13542: $ignoresymbdb,$noenccheck)=@_;
13543: my $cache_str='request.symbread.cached.'.$thisfn;
13544: if (defined($env{$cache_str})) {
13545: unless (ref($possibles) eq 'HASH') {
13546: if ($ignorecachednull) {
13547: return $env{$cache_str} unless ($env{$cache_str} eq '');
13548: } else {
13549: return $env{$cache_str};
13550: }
13551: }
13552: }
13553: # no filename provided? try from environment
13554: unless ($thisfn) {
13555: if ($env{'request.symb'}) {
13556: return $env{$cache_str}=&symbclean($env{'request.symb'});
13557: }
13558: $thisfn=$env{'request.filename'};
13559: }
13560: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
13561: # is that filename actually a symb? Verify, clean, and return
13562: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
13563: if (&symbverify($thisfn,$1)) {
13564: return $env{$cache_str}=&symbclean($thisfn);
13565: }
13566: }
13567: $thisfn=declutter($thisfn);
13568: my %hash;
13569: my %bighash;
13570: my $syval='';
13571: if (($env{'request.course.fn'}) && ($thisfn)) {
13572: my $targetfn = $thisfn;
13573: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
13574: $targetfn = 'adm/wrapper/'.$thisfn;
13575: }
13576: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
13577: $targetfn=$1;
13578: }
13579: unless ($ignoresymbdb) {
13580: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
13581: &GDBM_READER(),0640)) {
13582: $syval=$hash{$targetfn};
13583: untie(%hash);
13584: }
13585: if ($syval && $checkforblock) {
13586: my @blockers = &has_comm_blocking('bre',$syval,$thisfn,$ignoresymbdb,$noenccheck);
13587: if (@blockers) {
13588: $syval='';
13589: }
13590: }
13591: }
13592: # ---------------------------------------------------------- There was an entry
13593: if ($syval) {
13594: #unless ($syval=~/\_\d+$/) {
13595: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
13596: #&appenv({'request.ambiguous' => $thisfn});
13597: #return $env{$cache_str}='';
13598: #}
13599: #$syval.=$1;
13600: #}
13601: } else {
13602: # ------------------------------------------------------- Was not in symb table
13603: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
13604: &GDBM_READER(),0640)) {
13605: # ---------------------------------------------- Get ID(s) for current resource
13606: my $ids=$bighash{'ids_'.&clutter($thisfn)};
13607: unless ($ids) {
13608: $ids=$bighash{'ids_/'.$thisfn};
13609: }
13610: unless ($ids) {
13611: # alias?
13612: $ids=$bighash{'mapalias_'.$thisfn};
13613: }
13614: if ($ids) {
13615: # ------------------------------------------------------------------- Has ID(s)
13616: my @possibilities=split(/\,/,$ids);
13617: if ($#possibilities==0) {
13618: # ----------------------------------------------- There is only one possibility
13619: my ($mapid,$resid)=split(/\./,$ids);
13620: $syval=&encode_symb($bighash{'map_id_'.$mapid},
13621: $resid,$thisfn);
13622: if (ref($possibles) eq 'HASH') {
13623: unless ($bighash{'randomout_'.$ids} || $env{'request.role.adv'}) {
13624: $possibles->{$syval} = 1;
13625: }
13626: }
13627: if ($checkforblock) {
13628: unless ($bighash{'randomout_'.$ids} || $env{'request.role.adv'}) {
13629: my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids},'',$noenccheck);
13630: if (@blockers) {
13631: $syval = '';
13632: untie(%bighash);
13633: return $env{$cache_str}='';
13634: }
13635: }
13636: }
13637: } elsif ((!$donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
13638: # ------------------------------------------ There is more than one possibility
13639: my $realpossible=0;
13640: foreach my $id (@possibilities) {
13641: my $file=$bighash{'src_'.$id};
13642: my $canaccess;
13643: if (($donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
13644: $canaccess = 1;
13645: } else {
13646: $canaccess = &allowed('bre',$file);
13647: }
13648: if ($canaccess) {
13649: my ($mapid,$resid)=split(/\./,$id);
13650: if ($bighash{'map_type_'.$mapid} ne 'page') {
13651: my $poss_syval=&encode_symb($bighash{'map_id_'.$mapid},
13652: $resid,$thisfn);
13653: next if ($bighash{'randomout_'.$id} && !$env{'request.role.adv'});
13654: next unless (($noenccheck) || ($bighash{'encrypted_'.$id} eq $env{'request.enc'}));
13655: if ($checkforblock) {
13656: my @blockers = &has_comm_blocking('bre',$poss_syval,$file,'',$noenccheck);
13657: if (@blockers > 0) {
13658: $syval = '';
13659: } else {
13660: $syval = $poss_syval;
13661: $realpossible++;
13662: }
13663: } else {
13664: $syval = $poss_syval;
13665: $realpossible++;
13666: }
13667: if ($syval) {
13668: if (ref($possibles) eq 'HASH') {
13669: $possibles->{$syval} = 1;
13670: }
13671: }
13672: }
13673: }
13674: }
13675: if ($realpossible!=1) { $syval=''; }
13676: } else {
13677: $syval='';
13678: }
13679: }
13680: untie(%bighash);
13681: }
13682: }
13683: if ($syval) {
13684: return $env{$cache_str}=$syval;
13685: }
13686: }
13687: &appenv({'request.ambiguous' => $thisfn});
13688: return $env{$cache_str}='';
13689: }
13690:
13691: # ---------------------------------------------------------- Return random seed
13692:
13693: sub numval {
13694: my $txt=shift;
13695: $txt=~tr/A-J/0-9/;
13696: $txt=~tr/a-j/0-9/;
13697: $txt=~tr/K-T/0-9/;
13698: $txt=~tr/k-t/0-9/;
13699: $txt=~tr/U-Z/0-5/;
13700: $txt=~tr/u-z/0-5/;
13701: $txt=~s/\D//g;
13702: if ($_64bit) { if ($txt > 2**32) { return -1; } }
13703: return int($txt);
13704: }
13705:
13706: sub numval2 {
13707: my $txt=shift;
13708: $txt=~tr/A-J/0-9/;
13709: $txt=~tr/a-j/0-9/;
13710: $txt=~tr/K-T/0-9/;
13711: $txt=~tr/k-t/0-9/;
13712: $txt=~tr/U-Z/0-5/;
13713: $txt=~tr/u-z/0-5/;
13714: $txt=~s/\D//g;
13715: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
13716: my $total;
13717: foreach my $val (@txts) { $total+=$val; }
13718: if ($_64bit) { if ($total > 2**32) { return -1; } }
13719: return int($total);
13720: }
13721:
13722: sub numval3 {
13723: use integer;
13724: my $txt=shift;
13725: $txt=~tr/A-J/0-9/;
13726: $txt=~tr/a-j/0-9/;
13727: $txt=~tr/K-T/0-9/;
13728: $txt=~tr/k-t/0-9/;
13729: $txt=~tr/U-Z/0-5/;
13730: $txt=~tr/u-z/0-5/;
13731: $txt=~s/\D//g;
13732: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
13733: my $total;
13734: foreach my $val (@txts) { $total+=$val; }
13735: if ($_64bit) { $total=(($total<<32)>>32); }
13736: return $total;
13737: }
13738:
13739: sub digest {
13740: my ($data)=@_;
13741: my $digest=&Digest::MD5::md5($data);
13742: my ($a,$b,$c,$d)=unpack("iiii",$digest);
13743: my ($e,$f);
13744: {
13745: use integer;
13746: $e=($a+$b);
13747: $f=($c+$d);
13748: if ($_64bit) {
13749: $e=(($e<<32)>>32);
13750: $f=(($f<<32)>>32);
13751: }
13752: }
13753: if (wantarray) {
13754: return ($e,$f);
13755: } else {
13756: my $g;
13757: {
13758: use integer;
13759: $g=($e+$f);
13760: if ($_64bit) {
13761: $g=(($g<<32)>>32);
13762: }
13763: }
13764: return $g;
13765: }
13766: }
13767:
13768: sub latest_rnd_algorithm_id {
13769: return '64bit5';
13770: }
13771:
13772: sub get_rand_alg {
13773: my ($courseid)=@_;
13774: if (!$courseid) { $courseid=(&whichuser())[1]; }
13775: if ($courseid) {
13776: return $env{"course.$courseid.rndseed"};
13777: }
13778: return &latest_rnd_algorithm_id();
13779: }
13780:
13781: sub validCODE {
13782: my ($CODE)=@_;
13783: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
13784: return 0;
13785: }
13786:
13787: sub getCODE {
13788: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
13789: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
13790: defined($Apache::lonhomework::parsing_a_task) ) &&
13791: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
13792: return $Apache::lonhomework::history{'resource.CODE'};
13793: }
13794: return undef;
13795: }
13796: #
13797: # Determines the random seed for a specific context:
13798: #
13799: # parameters:
13800: # symb - in course context the symb for the seed.
13801: # course_id - The course id of the form domain_coursenum.
13802: # domain - Domain for the user.
13803: # course - Course for the user.
13804: # cenv - environment of the course.
13805: #
13806: # NOTE:
13807: # All parameters are picked out of the environment if missing
13808: # or not defined.
13809: # If a symb cannot be determined the current time is used instead.
13810: #
13811: # For a given well defined symb, courside, domain, username,
13812: # and course environment, the seed is reproducible.
13813: #
13814: sub rndseed {
13815: my ($symb,$courseid,$domain,$username, $cenv)=@_;
13816: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
13817: if (!defined($symb)) {
13818: unless ($symb=$wsymb) { return time; }
13819: }
13820: if (!defined $courseid) {
13821: $courseid=$wcourseid;
13822: }
13823: if (!defined $domain) { $domain=$wdomain; }
13824: if (!defined $username) { $username=$wusername }
13825:
13826: my $which;
13827: if (defined($cenv->{'rndseed'})) {
13828: $which = $cenv->{'rndseed'};
13829: } else {
13830: $which =&get_rand_alg($courseid);
13831: }
13832: if (defined(&getCODE())) {
13833:
13834: if ($which eq '64bit5') {
13835: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
13836: } elsif ($which eq '64bit4') {
13837: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
13838: } else {
13839: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
13840: }
13841: } elsif ($which eq '64bit5') {
13842: return &rndseed_64bit5($symb,$courseid,$domain,$username);
13843: } elsif ($which eq '64bit4') {
13844: return &rndseed_64bit4($symb,$courseid,$domain,$username);
13845: } elsif ($which eq '64bit3') {
13846: return &rndseed_64bit3($symb,$courseid,$domain,$username);
13847: } elsif ($which eq '64bit2') {
13848: return &rndseed_64bit2($symb,$courseid,$domain,$username);
13849: } elsif ($which eq '64bit') {
13850: return &rndseed_64bit($symb,$courseid,$domain,$username);
13851: }
13852: return &rndseed_32bit($symb,$courseid,$domain,$username);
13853: }
13854:
13855: sub rndseed_32bit {
13856: my ($symb,$courseid,$domain,$username)=@_;
13857: {
13858: use integer;
13859: my $symbchck=unpack("%32C*",$symb) << 27;
13860: my $symbseed=numval($symb) << 22;
13861: my $namechck=unpack("%32C*",$username) << 17;
13862: my $nameseed=numval($username) << 12;
13863: my $domainseed=unpack("%32C*",$domain) << 7;
13864: my $courseseed=unpack("%32C*",$courseid);
13865: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
13866: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13867: #&logthis("rndseed :$num:$symb");
13868: if ($_64bit) { $num=(($num<<32)>>32); }
13869: return $num;
13870: }
13871: }
13872:
13873: sub rndseed_64bit {
13874: my ($symb,$courseid,$domain,$username)=@_;
13875: {
13876: use integer;
13877: my $symbchck=unpack("%32S*",$symb) << 21;
13878: my $symbseed=numval($symb) << 10;
13879: my $namechck=unpack("%32S*",$username);
13880:
13881: my $nameseed=numval($username) << 21;
13882: my $domainseed=unpack("%32S*",$domain) << 10;
13883: my $courseseed=unpack("%32S*",$courseid);
13884:
13885: my $num1=$symbchck+$symbseed+$namechck;
13886: my $num2=$nameseed+$domainseed+$courseseed;
13887: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13888: #&logthis("rndseed :$num:$symb");
13889: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13890: return "$num1,$num2";
13891: }
13892: }
13893:
13894: sub rndseed_64bit2 {
13895: my ($symb,$courseid,$domain,$username)=@_;
13896: {
13897: use integer;
13898: # strings need to be an even # of cahracters long, it it is odd the
13899: # last characters gets thrown away
13900: my $symbchck=unpack("%32S*",$symb.' ') << 21;
13901: my $symbseed=numval($symb) << 10;
13902: my $namechck=unpack("%32S*",$username.' ');
13903:
13904: my $nameseed=numval($username) << 21;
13905: my $domainseed=unpack("%32S*",$domain.' ') << 10;
13906: my $courseseed=unpack("%32S*",$courseid.' ');
13907:
13908: my $num1=$symbchck+$symbseed+$namechck;
13909: my $num2=$nameseed+$domainseed+$courseseed;
13910: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13911: #&logthis("rndseed :$num:$symb");
13912: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13913: return "$num1,$num2";
13914: }
13915: }
13916:
13917: sub rndseed_64bit3 {
13918: my ($symb,$courseid,$domain,$username)=@_;
13919: {
13920: use integer;
13921: # strings need to be an even # of cahracters long, it it is odd the
13922: # last characters gets thrown away
13923: my $symbchck=unpack("%32S*",$symb.' ') << 21;
13924: my $symbseed=numval2($symb) << 10;
13925: my $namechck=unpack("%32S*",$username.' ');
13926:
13927: my $nameseed=numval2($username) << 21;
13928: my $domainseed=unpack("%32S*",$domain.' ') << 10;
13929: my $courseseed=unpack("%32S*",$courseid.' ');
13930:
13931: my $num1=$symbchck+$symbseed+$namechck;
13932: my $num2=$nameseed+$domainseed+$courseseed;
13933: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13934: #&logthis("rndseed :$num1:$num2:$_64bit");
13935: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13936:
13937: return "$num1:$num2";
13938: }
13939: }
13940:
13941: sub rndseed_64bit4 {
13942: my ($symb,$courseid,$domain,$username)=@_;
13943: {
13944: use integer;
13945: # strings need to be an even # of cahracters long, it it is odd the
13946: # last characters gets thrown away
13947: my $symbchck=unpack("%32S*",$symb.' ') << 21;
13948: my $symbseed=numval3($symb) << 10;
13949: my $namechck=unpack("%32S*",$username.' ');
13950:
13951: my $nameseed=numval3($username) << 21;
13952: my $domainseed=unpack("%32S*",$domain.' ') << 10;
13953: my $courseseed=unpack("%32S*",$courseid.' ');
13954:
13955: my $num1=$symbchck+$symbseed+$namechck;
13956: my $num2=$nameseed+$domainseed+$courseseed;
13957: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13958: #&logthis("rndseed :$num1:$num2:$_64bit");
13959: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13960:
13961: return "$num1:$num2";
13962: }
13963: }
13964:
13965: sub rndseed_64bit5 {
13966: my ($symb,$courseid,$domain,$username)=@_;
13967: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
13968: return "$num1:$num2";
13969: }
13970:
13971: sub rndseed_CODE_64bit {
13972: my ($symb,$courseid,$domain,$username)=@_;
13973: {
13974: use integer;
13975: my $symbchck=unpack("%32S*",$symb.' ') << 16;
13976: my $symbseed=numval2($symb);
13977: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
13978: my $CODEseed=numval(&getCODE());
13979: my $courseseed=unpack("%32S*",$courseid.' ');
13980: my $num1=$symbseed+$CODEchck;
13981: my $num2=$CODEseed+$courseseed+$symbchck;
13982: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
13983: #&logthis("rndseed :$num1:$num2:$symb");
13984: if ($_64bit) { $num1=(($num1<<32)>>32); }
13985: if ($_64bit) { $num2=(($num2<<32)>>32); }
13986: return "$num1:$num2";
13987: }
13988: }
13989:
13990: sub rndseed_CODE_64bit4 {
13991: my ($symb,$courseid,$domain,$username)=@_;
13992: {
13993: use integer;
13994: my $symbchck=unpack("%32S*",$symb.' ') << 16;
13995: my $symbseed=numval3($symb);
13996: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
13997: my $CODEseed=numval3(&getCODE());
13998: my $courseseed=unpack("%32S*",$courseid.' ');
13999: my $num1=$symbseed+$CODEchck;
14000: my $num2=$CODEseed+$courseseed+$symbchck;
14001: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
14002: #&logthis("rndseed :$num1:$num2:$symb");
14003: if ($_64bit) { $num1=(($num1<<32)>>32); }
14004: if ($_64bit) { $num2=(($num2<<32)>>32); }
14005: return "$num1:$num2";
14006: }
14007: }
14008:
14009: sub rndseed_CODE_64bit5 {
14010: my ($symb,$courseid,$domain,$username)=@_;
14011: my $code = &getCODE();
14012: my ($num1,$num2)=&digest("$symb,$courseid,$code");
14013: return "$num1:$num2";
14014: }
14015:
14016: sub setup_random_from_rndseed {
14017: my ($rndseed)=@_;
14018: if ($rndseed =~/([,:])/) {
14019: my ($num1,$num2) = map { abs($_); } (split(/[,:]/,$rndseed));
14020: if ((!$num1) || (!$num2) || ($num1 > 2147483562) || ($num2 > 2147483398)) {
14021: &Math::Random::random_set_seed_from_phrase($rndseed);
14022: } else {
14023: &Math::Random::random_set_seed($num1,$num2);
14024: }
14025: } else {
14026: &Math::Random::random_set_seed_from_phrase($rndseed);
14027: }
14028: }
14029:
14030: sub latest_receipt_algorithm_id {
14031: return 'receipt3';
14032: }
14033:
14034: sub recunique {
14035: my $fucourseid=shift;
14036: my $unique;
14037: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
14038: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
14039: $unique=$env{"course.$fucourseid.internal.encseed"};
14040: } else {
14041: $unique=$perlvar{'lonReceipt'};
14042: }
14043: return unpack("%32C*",$unique);
14044: }
14045:
14046: sub recprefix {
14047: my $fucourseid=shift;
14048: my $prefix;
14049: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
14050: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
14051: $prefix=$env{"course.$fucourseid.internal.encpref"};
14052: } else {
14053: $prefix=$perlvar{'lonHostID'};
14054: }
14055: return unpack("%32C*",$prefix);
14056: }
14057:
14058: sub ireceipt {
14059: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
14060:
14061: my $return =&recprefix($fucourseid).'-';
14062:
14063: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
14064: $env{'request.state'} eq 'construct') {
14065: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
14066: return $return;
14067: }
14068:
14069: my $cuname=unpack("%32C*",$funame);
14070: my $cudom=unpack("%32C*",$fudom);
14071: my $cucourseid=unpack("%32C*",$fucourseid);
14072: my $cusymb=unpack("%32C*",$fusymb);
14073: my $cunique=&recunique($fucourseid);
14074: my $cpart=unpack("%32S*",$part);
14075: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
14076:
14077: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
14078:
14079: $return.= ($cunique%$cuname+
14080: $cunique%$cudom+
14081: $cusymb%$cuname+
14082: $cusymb%$cudom+
14083: $cucourseid%$cuname+
14084: $cucourseid%$cudom+
14085: $cpart%$cuname+
14086: $cpart%$cudom);
14087: } else {
14088: $return.= ($cunique%$cuname+
14089: $cunique%$cudom+
14090: $cusymb%$cuname+
14091: $cusymb%$cudom+
14092: $cucourseid%$cuname+
14093: $cucourseid%$cudom);
14094: }
14095: return $return;
14096: }
14097:
14098: sub receipt {
14099: my ($part)=@_;
14100: my ($symb,$courseid,$domain,$name) = &whichuser();
14101: return &ireceipt($name,$domain,$courseid,$symb,$part);
14102: }
14103:
14104: sub whichuser {
14105: my ($passedsymb)=@_;
14106: my ($symb,$courseid,$domain,$name,$publicuser);
14107: if (defined($env{'form.grade_symb'})) {
14108: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
14109: my $allowed=&allowed('vgr',$tmp_courseid);
14110: if (!$allowed &&
14111: exists($env{'request.course.sec'}) &&
14112: $env{'request.course.sec'} !~ /^\s*$/) {
14113: $allowed=&allowed('vgr',$tmp_courseid.
14114: '/'.$env{'request.course.sec'});
14115: }
14116: if ($allowed) {
14117: ($symb)=&get_env_multiple('form.grade_symb');
14118: $courseid=$tmp_courseid;
14119: ($domain)=&get_env_multiple('form.grade_domain');
14120: ($name)=&get_env_multiple('form.grade_username');
14121: return ($symb,$courseid,$domain,$name,$publicuser);
14122: }
14123: }
14124: if (!$passedsymb) {
14125: $symb=&symbread();
14126: } else {
14127: $symb=$passedsymb;
14128: }
14129: $courseid=$env{'request.course.id'};
14130: $domain=$env{'user.domain'};
14131: $name=$env{'user.name'};
14132: if ($name eq 'public' && $domain eq 'public') {
14133: if (!defined($env{'form.username'})) {
14134: $env{'form.username'}.=time.rand(10000000);
14135: }
14136: $name.=$env{'form.username'};
14137: }
14138: return ($symb,$courseid,$domain,$name,$publicuser);
14139:
14140: }
14141:
14142: # ------------------------------------------------------------ Serves up a file
14143: # returns either the contents of the file or
14144: # -1 if the file doesn't exist
14145: #
14146: # if the target is a file that was uploaded via DOCS,
14147: # a check will be made to see if a current copy exists on the local server,
14148: # if it does this will be served, otherwise a copy will be retrieved from
14149: # the home server for the course and stored in /home/httpd/html/userfiles on
14150: # the local server.
14151:
14152: sub getfile {
14153: my ($file) = @_;
14154: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
14155: &repcopy($file);
14156: return &readfile($file);
14157: }
14158:
14159: sub repcopy_userfile {
14160: my ($file)=@_;
14161: my $londocroot = $perlvar{'lonDocRoot'};
14162: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
14163: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
14164: my ($cdom,$cnum,$filename) =
14165: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
14166: my $uri="/uploaded/$cdom/$cnum/$filename";
14167: if (-e "$file") {
14168: # we already have a local copy, check it out
14169: my @fileinfo = stat($file);
14170: my $rtncode;
14171: my $info;
14172: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
14173: if ($lwpresp ne 'ok') {
14174: # there is no such file anymore, even though we had a local copy
14175: if ($rtncode eq '404') {
14176: unlink($file);
14177: }
14178: return -1;
14179: }
14180: if ($info < $fileinfo[9]) {
14181: # nice, the file we have is up-to-date, just say okay
14182: return 'ok';
14183: } else {
14184: # the file is outdated, get rid of it
14185: unlink($file);
14186: }
14187: }
14188: # one way or the other, at this point, we don't have the file
14189: # construct the correct path for the file
14190: my @parts = ($cdom,$cnum);
14191: if ($filename =~ m|^(.+)/[^/]+$|) {
14192: push @parts, split(/\//,$1);
14193: }
14194: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
14195: foreach my $part (@parts) {
14196: $path .= '/'.$part;
14197: if (!-e $path) {
14198: mkdir($path,0770);
14199: }
14200: }
14201: # now the path exists for sure
14202: # get a user agent
14203: my $transferfile=$file.'.in.transfer';
14204: # FIXME: this should flock
14205: if (-e $transferfile) { return 'ok'; }
14206: my $request;
14207: $uri=~s/^\///;
14208: my $homeserver = &homeserver($cnum,$cdom);
14209: my $hostname = &hostname($homeserver);
14210: my $protocol = $protocol{$homeserver};
14211: $protocol = 'http' if ($protocol ne 'https');
14212: $request=new HTTP::Request('GET',$protocol.'://'.$hostname.'/raw/'.$uri);
14213: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,$transferfile,\%perlvar,'',0,1);
14214: # did it work?
14215: if ($response->is_error()) {
14216: unlink($transferfile);
14217: &logthis("Userfile repcopy failed for $uri");
14218: return -1;
14219: }
14220: # worked, rename the transfer file
14221: rename($transferfile,$file);
14222: return 'ok';
14223: }
14224:
14225: sub tokenwrapper {
14226: my $uri=shift;
14227: $uri=~s|^https?\://([^/]+)||;
14228: $uri=~s|^/||;
14229: $env{'user.environment'}=~/\/([^\/]+)\.id/;
14230: my $token=$1;
14231: my (undef,$udom,$uname,$file)=split('/',$uri,4);
14232: if ($udom && $uname && $file) {
14233: $file=~s|(\?\.*)*$||;
14234: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
14235: my $homeserver = &homeserver($uname,$udom);
14236: my $hostname = &hostname($homeserver);
14237: my $protocol = $protocol{$homeserver};
14238: $protocol = 'http' if ($protocol ne 'https');
14239: return $protocol.'://'.$hostname.'/'.$uri.
14240: (($uri=~/\?/)?'&':'?').'token='.$token.
14241: '&tokenissued='.$perlvar{'lonHostID'};
14242: } else {
14243: return '/adm/notfound.html';
14244: }
14245: }
14246:
14247: # call with reqtype HEAD: get last modification time
14248: # call with reqtype GET: get the file contents
14249: # Do not call this with reqtype GET for large files! It loads everything into memory
14250: #
14251: sub getuploaded {
14252: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
14253: $uri=~s/^\///;
14254: my $homeserver = &homeserver($cnum,$cdom);
14255: my $hostname = &hostname($homeserver);
14256: my $protocol = $protocol{$homeserver};
14257: $protocol = 'http' if ($protocol ne 'https');
14258: $uri = $protocol.'://'.$hostname.'/raw/'.$uri;
14259: my $request=new HTTP::Request($reqtype,$uri);
14260: my $response=&LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,'',0,1);
14261: $$rtncode = $response->code;
14262: if (! $response->is_success()) {
14263: return 'failed';
14264: }
14265: if ($reqtype eq 'HEAD') {
14266: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
14267: } elsif ($reqtype eq 'GET') {
14268: $$info = $response->content;
14269: }
14270: return 'ok';
14271: }
14272:
14273: sub readfile {
14274: my $file = shift;
14275: if ( (! -e $file ) || ($file eq '') ) { return -1; };
14276: my $fh;
14277: open($fh,"<",$file);
14278: my $a='';
14279: while (my $line = <$fh>) { $a .= $line; }
14280: return $a;
14281: }
14282:
14283: sub filelocation {
14284: my ($dir,$file) = @_;
14285: my $location;
14286: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
14287:
14288: if ($file =~ m-^/adm/-) {
14289: $file=~s-^/adm/wrapper/-/-;
14290: $file=~s-^/adm/coursedocs/showdoc/-/-;
14291: }
14292:
14293: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
14294: $location = $file;
14295: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
14296: my ($udom,$uname,$filename)=
14297: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
14298: my $home=&homeserver($uname,$udom);
14299: my $is_me=0;
14300: my @ids=¤t_machine_ids();
14301: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
14302: if ($is_me) {
14303: $location=propath($udom,$uname).'/userfiles/'.$filename;
14304: } else {
14305: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
14306: $udom.'/'.$uname.'/'.$filename;
14307: }
14308: } elsif ($file =~ m-^/adm/-) {
14309: $location = $perlvar{'lonDocRoot'}.'/'.$file;
14310: } else {
14311: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
14312: $file=~s:^/(res|priv)/:/:;
14313: my $space=$1;
14314: if ( !( $file =~ m:^/:) ) {
14315: $location = $dir. '/'.$file;
14316: } else {
14317: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
14318: }
14319: }
14320: $location=~s://+:/:g; # remove duplicate /
14321: while ($location=~m{/\.\./}) {
14322: if ($location =~ m{/[^/]+/\.\./}) {
14323: $location=~ s{/[^/]+/\.\./}{/}g;
14324: } else {
14325: $location=~ s{/\.\./}{/}g;
14326: }
14327: } #remove dir/..
14328: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
14329: return $location;
14330: }
14331:
14332: sub hreflocation {
14333: my ($dir,$file)=@_;
14334: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
14335: $file=filelocation($dir,$file);
14336: } elsif ($file=~m-^/adm/-) {
14337: $file=~s-^/adm/wrapper/-/-;
14338: $file=~s-^/adm/coursedocs/showdoc/-/-;
14339: }
14340: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
14341: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
14342: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
14343: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
14344: {/uploaded/$1/$2/}x;
14345: }
14346: if ($file=~ m{^/userfiles/}) {
14347: $file =~ s{^/userfiles/}{/uploaded/};
14348: }
14349: return $file;
14350: }
14351:
14352:
14353:
14354:
14355:
14356: sub current_machine_domains {
14357: return &machine_domains(&hostname($perlvar{'lonHostID'}));
14358: }
14359:
14360: sub machine_domains {
14361: my ($hostname) = @_;
14362: my @domains;
14363: my %hostname = &all_hostnames();
14364: while( my($id, $name) = each(%hostname)) {
14365: # &logthis("-$id-$name-$hostname-");
14366: if ($hostname eq $name) {
14367: push(@domains,&host_domain($id));
14368: }
14369: }
14370: return @domains;
14371: }
14372:
14373: sub current_machine_ids {
14374: return &machine_ids(&hostname($perlvar{'lonHostID'}));
14375: }
14376:
14377: sub machine_ids {
14378: my ($hostname) = @_;
14379: $hostname ||= &hostname($perlvar{'lonHostID'});
14380: my @ids;
14381: my %name_to_host = &all_names();
14382: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
14383: return @{ $name_to_host{$hostname} };
14384: }
14385: return;
14386: }
14387:
14388: sub additional_machine_domains {
14389: my @domains;
14390: open(my $fh,"<","$perlvar{'lonTabDir'}/expected_domains.tab");
14391: while( my $line = <$fh>) {
14392: $line =~ s/\s//g;
14393: push(@domains,$line);
14394: }
14395: return @domains;
14396: }
14397:
14398: sub default_login_domain {
14399: my $domain = $perlvar{'lonDefDomain'};
14400: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
14401: foreach my $posdom (¤t_machine_domains(),
14402: &additional_machine_domains()) {
14403: if (lc($posdom) eq lc($testdomain)) {
14404: $domain=$posdom;
14405: last;
14406: }
14407: }
14408: return $domain;
14409: }
14410:
14411: sub shared_institution {
14412: my ($dom,$lonhost) = @_;
14413: if ($lonhost eq '') {
14414: $lonhost = $perlvar{'lonHostID'};
14415: }
14416: my $same_intdom;
14417: my $hostintdom = &internet_dom($lonhost);
14418: if ($hostintdom ne '') {
14419: my %iphost = &get_iphost();
14420: my $primary_id = &domain($dom,'primary');
14421: my $primary_ip = &get_host_ip($primary_id);
14422: if (ref($iphost{$primary_ip}) eq 'ARRAY') {
14423: foreach my $id (@{$iphost{$primary_ip}}) {
14424: my $intdom = &internet_dom($id);
14425: if ($intdom eq $hostintdom) {
14426: $same_intdom = 1;
14427: last;
14428: }
14429: }
14430: }
14431: }
14432: return $same_intdom;
14433: }
14434:
14435: sub uses_sts {
14436: my ($ignore_cache) = @_;
14437: my $lonhost = $perlvar{'lonHostID'};
14438: my $hostname = &hostname($lonhost);
14439: my $sts_on;
14440: if ($protocol{$lonhost} eq 'https') {
14441: my $cachetime = 12*3600;
14442: if (!$ignore_cache) {
14443: ($sts_on,my $cached)=&is_cached_new('stspolicy',$lonhost);
14444: if (defined($cached)) {
14445: return $sts_on;
14446: }
14447: }
14448: my $url = $protocol{$lonhost}.'://'.$hostname.'/index.html';
14449: my $request=new HTTP::Request('HEAD',$url);
14450: my $response=&LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,'','','',1);
14451: if ($response->is_success) {
14452: my $has_sts = $response->header('Strict-Transport-Security');
14453: if ($has_sts eq '') {
14454: $sts_on = 0;
14455: } else {
14456: if ($has_sts =~ /\Qmax-age=\E(\d+)/) {
14457: my $maxage = $1;
14458: if ($maxage) {
14459: $sts_on = 1;
14460: } else {
14461: $sts_on = 0;
14462: }
14463: } else {
14464: $sts_on = 0;
14465: }
14466: }
14467: return &do_cache_new('stspolicy',$lonhost,$sts_on,$cachetime);
14468: }
14469: }
14470: return;
14471: }
14472:
14473: sub waf_allssl {
14474: my ($host_name) = @_;
14475: my $alias = &get_proxy_alias();
14476: if ($host_name eq '') {
14477: $host_name = $ENV{'SERVER_NAME'};
14478: }
14479: if (($host_name ne '') && ($alias eq $host_name)) {
14480: my $serverhomedom = &host_domain($perlvar{'lonHostID'});
14481: my %defdomdefaults = &get_domain_defaults($serverhomedom);
14482: if ($defdomdefaults{'waf_sslopt'}) {
14483: return $defdomdefaults{'waf_sslopt'};
14484: }
14485: }
14486: return;
14487: }
14488:
14489: sub get_requestor_ip {
14490: my ($r,$nolookup,$noproxy) = @_;
14491: my $from_ip;
14492: if (ref($r)) {
14493: if ($r->can('useragent_ip')) {
14494: if ($noproxy && $r->can('client_ip')) {
14495: $from_ip = $r->client_ip();
14496: } else {
14497: $from_ip = $r->useragent_ip();
14498: }
14499: } elsif ($r->connection->can('remote_ip')) {
14500: $from_ip = $r->connection->remote_ip();
14501: } else {
14502: $from_ip = $r->get_remote_host($nolookup);
14503: }
14504: } else {
14505: $from_ip = $ENV{'REMOTE_ADDR'};
14506: }
14507: return $from_ip if ($noproxy);
14508: # Who controls proxy settings for server
14509: my $dom_in_use = $Apache::lonnet::perlvar{'lonDefDomain'};
14510: my $proxyinfo = &get_proxy_settings($dom_in_use);
14511: if ((ref($proxyinfo) eq 'HASH') && ($from_ip)) {
14512: if ($proxyinfo->{'vpnint'}) {
14513: if (&ip_match($from_ip,$proxyinfo->{'vpnint'})) {
14514: return $from_ip;
14515: }
14516: }
14517: if ($proxyinfo->{'trusted'}) {
14518: if (&ip_match($from_ip,$proxyinfo->{'trusted'})) {
14519: my $ipheader = $proxyinfo->{'ipheader'};
14520: my ($ip,$xfor);
14521: if (ref($r)) {
14522: if ($ipheader) {
14523: $ip = $r->headers_in->{$ipheader};
14524: }
14525: $xfor = $r->headers_in->{'X-Forwarded-For'};
14526: } else {
14527: if ($ipheader) {
14528: $ip = $ENV{'HTTP_'.uc($ipheader)};
14529: }
14530: $xfor = $ENV{'HTTP_X_FORWARDED_FOR'};
14531: }
14532: if (($ip eq '') && ($xfor ne '')) {
14533: foreach my $poss_ip (reverse(split(/\s*,\s*/,$xfor))) {
14534: unless (&ip_match($poss_ip,$proxyinfo->{'trusted'})) {
14535: $ip = $poss_ip;
14536: last;
14537: }
14538: }
14539: }
14540: if ($ip ne '') {
14541: return $ip;
14542: }
14543: }
14544: }
14545: }
14546: return $from_ip;
14547: }
14548:
14549: sub get_proxy_settings {
14550: my ($dom_in_use) = @_;
14551: my %domdefaults = &Apache::lonnet::get_domain_defaults($dom_in_use);
14552: my $proxyinfo = {
14553: ipheader => $domdefaults{'waf_ipheader'},
14554: trusted => $domdefaults{'waf_trusted'},
14555: vpnint => $domdefaults{'waf_vpnint'},
14556: vpnext => $domdefaults{'waf_vpnext'},
14557: sslopt => $domdefaults{'waf_sslopt'},
14558: };
14559: return $proxyinfo;
14560: }
14561:
14562: sub ip_match {
14563: my ($ip,$pattern_str) = @_;
14564: $ip=Net::CIDR::cidrvalidate($ip);
14565: if ($ip) {
14566: return Net::CIDR::cidrlookup($ip,split(/\s*,\s*/,$pattern_str));
14567: }
14568: return;
14569: }
14570:
14571: sub get_proxy_alias {
14572: my ($lonid) = @_;
14573: if ($lonid eq '') {
14574: $lonid = $perlvar{'lonHostID'};
14575: }
14576: if (!defined(&hostname($lonid))) {
14577: return;
14578: }
14579: if ($lonid ne '') {
14580: my ($alias,$cached) = &is_cached_new('proxyalias',$lonid);
14581: if ($cached) {
14582: return $alias;
14583: }
14584: my $dom = &Apache::lonnet::host_domain($lonid);
14585: if ($dom ne '') {
14586: my $cachetime = 60*60*24;
14587: my %domconfig =
14588: &Apache::lonnet::get_dom('configuration',['wafproxy'],$dom);
14589: my $alias;
14590: if (ref($domconfig{'wafproxy'}) eq 'HASH') {
14591: if (ref($domconfig{'wafproxy'}{'alias'}) eq 'HASH') {
14592: $alias = $domconfig{'wafproxy'}{'alias'}{$lonid};
14593: }
14594: }
14595: return &do_cache_new('proxyalias',$lonid,$alias,$cachetime);
14596: }
14597: }
14598: return;
14599: }
14600:
14601: sub use_proxy_alias {
14602: my ($r,$lonid) = @_;
14603: my $alias = &get_proxy_alias($lonid);
14604: if ($alias) {
14605: my $dom = &host_domain($lonid);
14606: if ($dom ne '') {
14607: my $proxyinfo = &get_proxy_settings($dom );
14608: my ($vpnint,$remote_ip);
14609: if (ref($proxyinfo) eq 'HASH') {
14610: $vpnint = $proxyinfo->{'vpnint'};
14611: if ($vpnint) {
14612: $remote_ip = &get_requestor_ip($r,1,1);
14613: }
14614: }
14615: unless ($vpnint && &ip_match($remote_ip,$vpnint)) {
14616: return $alias;
14617: }
14618: }
14619: }
14620: return;
14621: }
14622:
14623: # ------------------------------------------------------------- Declutters URLs
14624:
14625: sub declutter {
14626: my $thisfn=shift;
14627: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
14628: unless ($thisfn=~m{^/home/httpd/html/priv/}) {
14629: $thisfn=~s{^/home/httpd/html}{};
14630: }
14631: $thisfn=~s/^\///;
14632: $thisfn=~s|^adm/wrapper/||;
14633: $thisfn=~s|^adm/coursedocs/showdoc/||;
14634: $thisfn=~s/^res\///;
14635: $thisfn=~s/^priv\///;
14636: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
14637: $thisfn=~s/\?.+$//;
14638: }
14639: return $thisfn;
14640: }
14641:
14642: # ------------------------------------------------------------- Clutter up URLs
14643:
14644: sub clutter {
14645: my $thisfn='/'.&declutter(shift);
14646: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
14647: || $thisfn =~ m{^/adm/(includes|pages)} ) {
14648: $thisfn='/res'.$thisfn;
14649: }
14650: if ($thisfn !~m|^/adm|) {
14651: if ($thisfn =~ m|^/ext/|) {
14652: $thisfn='/adm/wrapper'.$thisfn;
14653: } else {
14654: my ($ext) = ($thisfn =~ /\.(\w+)$/);
14655: my $embstyle=&Apache::loncommon::fileembstyle($ext);
14656: if ($embstyle eq 'ssi'
14657: || ($embstyle eq 'hdn')
14658: || ($embstyle eq 'rat')
14659: || ($embstyle eq 'prv')
14660: || ($embstyle eq 'ign')) {
14661: #do nothing with these
14662: } elsif (($embstyle eq 'img')
14663: || ($embstyle eq 'emb')
14664: || ($embstyle eq 'wrp')) {
14665: $thisfn='/adm/wrapper'.$thisfn;
14666: } elsif ($embstyle eq 'unk'
14667: && $thisfn!~/\.(sequence|page)$/) {
14668: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
14669: } else {
14670: # &logthis("Got a blank emb style");
14671: }
14672: }
14673: } elsif ($thisfn =~ m{^/adm/$match_domain/$match_courseid/\d+/ext\.tool$}) {
14674: $thisfn='/adm/wrapper'.$thisfn;
14675: }
14676: return $thisfn;
14677: }
14678:
14679: sub clutter_with_no_wrapper {
14680: my $uri = &clutter(shift);
14681: if ($uri =~ m-^/adm/-) {
14682: $uri =~ s-^/adm/wrapper/-/-;
14683: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
14684: }
14685: return $uri;
14686: }
14687:
14688: sub freeze_escape {
14689: my ($value)=@_;
14690: if (ref($value)) {
14691: $value=&nfreeze($value);
14692: return '__FROZEN__'.&escape($value);
14693: }
14694: return &escape($value);
14695: }
14696:
14697:
14698: sub thaw_unescape {
14699: my ($value)=@_;
14700: if ($value =~ /^__FROZEN__/) {
14701: substr($value,0,10,undef);
14702: $value=&unescape($value);
14703: return &thaw($value);
14704: }
14705: return &unescape($value);
14706: }
14707:
14708: sub correct_line_ends {
14709: my ($result)=@_;
14710: $$result =~s/\r\n/\n/mg;
14711: $$result =~s/\r/\n/mg;
14712: }
14713: # ================================================================ Main Program
14714:
14715: sub goodbye {
14716: &logthis("Starting Shut down");
14717: #not converted to using infrastruture and probably shouldn't be
14718: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
14719: #converted
14720: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
14721: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
14722: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
14723: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
14724: #1.1 only
14725: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
14726: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
14727: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
14728: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
14729: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
14730: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
14731: &logthis(sprintf("%-20s is %s",'hits',$hits));
14732: &flushcourselogs();
14733: &logthis("Shutting down");
14734: }
14735:
14736: sub get_dns {
14737: my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
14738: if (!$ignore_cache) {
14739: my ($content,$cached)=
14740: &Apache::lonnet::is_cached_new('dns',$url);
14741: if ($cached) {
14742: &$func($content,$hashref);
14743: return;
14744: }
14745: }
14746:
14747: my %alldns;
14748: if (open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab")) {
14749: foreach my $dns (<$config>) {
14750: next if ($dns !~ /^\^(\S*)/x);
14751: my $line = $1;
14752: my ($host,$protocol) = split(/:/,$line);
14753: if ($protocol ne 'https') {
14754: $protocol = 'http';
14755: }
14756: $alldns{$host} = $protocol;
14757: }
14758: close($config);
14759: }
14760: while (%alldns) {
14761: my ($dns) = sort { $b cmp $a } keys(%alldns);
14762: my ($contents,@content);
14763: if ($dns eq Sys::Hostname::FQDN::fqdn()) {
14764: my $command = (split('/',$url))[3];
14765: my ($dir,$file) = &parse_getdns_url($command,$url);
14766: delete($alldns{$dns});
14767: next if (($dir eq '') || ($file eq ''));
14768: if (open(my $config,'<',"$dir/$file")) {
14769: @content = <$config>;
14770: close($config);
14771: }
14772: if ($url eq '/adm/dns/loncapaCRL') {
14773: $contents = join('',@content);
14774: }
14775: } else {
14776: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
14777: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar,30,0);
14778: delete($alldns{$dns});
14779: next if ($response->is_error());
14780: if ($url eq '/adm/dns/loncapaCRL') {
14781: $contents = $response->content;
14782: } else {
14783: @content = split("\n",$response->content);
14784: }
14785: }
14786: if ($url eq '/adm/dns/loncapaCRL') {
14787: return &$func($contents);
14788: } else {
14789: unless ($nocache) {
14790: &do_cache_new('dns',$url,\@content,30*24*60*60);
14791: }
14792: &$func(\@content,$hashref);
14793: return;
14794: }
14795: }
14796: my $which = (split('/',$url,4))[3];
14797: if ($which eq 'loncapaCRL') {
14798: my $diskfile = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
14799: if (-e $diskfile) {
14800: &logthis("unable to contact DNS, on disk file $diskfile not updated");
14801: } else {
14802: &logthis("unable to contact DNS, no on disk file $diskfile available");
14803: }
14804: } else {
14805: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
14806: if (open(my $config,"<","$perlvar{'lonTabDir'}/dns_$which.tab")) {
14807: my @content = <$config>;
14808: close($config);
14809: &$func(\@content,$hashref);
14810: }
14811: }
14812: return;
14813: }
14814:
14815: # ------------------------------------------------------Get DNS checksums file
14816: sub parse_dns_checksums_tab {
14817: my ($lines,$hashref) = @_;
14818: my $lonhost = $perlvar{'lonHostID'};
14819: my $machine_dom = &Apache::lonnet::host_domain($lonhost);
14820: my $loncaparev = &get_server_loncaparev($machine_dom);
14821: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
14822: my $webconfdir = '/etc/httpd/conf';
14823: if ($distro =~ /^(ubuntu|debian)(\d+)$/) {
14824: $webconfdir = '/etc/apache2';
14825: } elsif ($distro =~ /^sles(\d+)$/) {
14826: if ($1 >= 10) {
14827: $webconfdir = '/etc/apache2';
14828: }
14829: } elsif ($distro =~ /^suse(\d+\.\d+)$/) {
14830: if ($1 >= 10.0) {
14831: $webconfdir = '/etc/apache2';
14832: }
14833: }
14834: my ($release,$timestamp) = split(/\-/,$loncaparev);
14835: my (%chksum,%revnum);
14836: if (ref($lines) eq 'ARRAY') {
14837: chomp(@{$lines});
14838: my $version = shift(@{$lines});
14839: if ($version eq $release) {
14840: foreach my $line (@{$lines}) {
14841: my ($file,$version,$shasum) = split(/,/,$line);
14842: if ($file =~ m{^/etc/httpd/conf}) {
14843: if ($webconfdir eq '/etc/apache2') {
14844: $file =~ s{^\Q/etc/httpd/conf/\E}{$webconfdir/};
14845: }
14846: }
14847: $chksum{$file} = $shasum;
14848: $revnum{$file} = $version;
14849: }
14850: if (ref($hashref) eq 'HASH') {
14851: %{$hashref} = (
14852: sums => \%chksum,
14853: versions => \%revnum,
14854: );
14855: }
14856: }
14857: }
14858: return;
14859: }
14860:
14861: sub fetch_dns_checksums {
14862: my %checksums;
14863: my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
14864: my $loncaparev = &get_server_loncaparev($machine_dom,$perlvar{'lonHostID'});
14865: my ($release,$timestamp) = split(/\-/,$loncaparev);
14866: &get_dns("/adm/dns/checksums/$release",\&parse_dns_checksums_tab,1,1,
14867: \%checksums);
14868: return \%checksums;
14869: }
14870:
14871: sub fetch_crl_pemfile {
14872: return &get_dns("/adm/dns/loncapaCRL",\&save_crl_pem,1,1);
14873: }
14874:
14875: sub save_crl_pem {
14876: my ($content) = @_;
14877: my ($msg,$hadchanges);
14878: if ($content ne '') {
14879: my $now = time;
14880: my $lonca = $perlvar{'lonCertificateDirectory'}.'/'.$perlvar{'lonnetCertificateAuthority'};
14881: my $tmpcrl = $tmpdir.'/'.$perlvar{'lonnetCertRevocationList'}.'_'.$now.'.'.$$.'.tmp';
14882: if (open(my $fh,'>',"$tmpcrl")) {
14883: print $fh $content;
14884: close($fh);
14885: if (-e $lonca) {
14886: if (open(PIPE,"openssl crl -in $tmpcrl -inform pem -CAfile $lonca -noout 2>&1 |")) {
14887: my $check = <PIPE>;
14888: close(PIPE);
14889: chomp($check);
14890: if ($check eq 'verify OK') {
14891: my $dest = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
14892: my $backup;
14893: if (-e $dest) {
14894: if (&File::Copy::move($dest,"$dest.bak")) {
14895: $backup = 'ok';
14896: }
14897: }
14898: if (&File::Copy::move($tmpcrl,$dest)) {
14899: $msg = 'ok';
14900: if ($backup) {
14901: my (%oldnums,%newnums);
14902: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest.bak |grep 'Serial Number' |")) {
14903: while (<PIPE>) {
14904: $oldnums{(split(/:/))[1]} = 1;
14905: }
14906: close(PIPE);
14907: }
14908: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest |grep 'Serial Number' |")) {
14909: while(<PIPE>) {
14910: $newnums{(split(/:/))[1]} = 1;
14911: }
14912: close(PIPE);
14913: }
14914: foreach my $key (sort {$b <=> $a } (keys(%newnums))) {
14915: unless (exists($oldnums{$key})) {
14916: $hadchanges = 1;
14917: last;
14918: }
14919: }
14920: unless ($hadchanges) {
14921: foreach my $key (sort {$b <=> $a } (keys(%oldnums))) {
14922: unless (exists($newnums{$key})) {
14923: $hadchanges = 1;
14924: last;
14925: }
14926: }
14927: }
14928: }
14929: }
14930: } else {
14931: unlink($tmpcrl);
14932: }
14933: } else {
14934: unlink($tmpcrl);
14935: }
14936: } else {
14937: unlink($tmpcrl);
14938: }
14939: }
14940: }
14941: return ($msg,$hadchanges);
14942: }
14943:
14944: sub parse_getdns_url {
14945: my ($command,$url) = @_;
14946: my $dir = $perlvar{'lonTabDir'};
14947: my $file;
14948: if ($command eq 'hosts') {
14949: $file = 'dns_hosts.tab';
14950: } elsif ($command eq 'domain') {
14951: $file = 'dns_domain.tab';
14952: } elsif ($command eq 'checksums') {
14953: my $version = (split('/',$url))[4];
14954: $file = "dns_checksums/$version.tab",
14955: } elsif ($command eq 'loncapaCRL') {
14956: $dir = $perlvar{'lonCertificateDirectory'};
14957: $file = $perlvar{'lonnetCertRevocationList'};
14958: }
14959: return ($dir,$file);
14960: }
14961:
14962: # ------------------------------------------------------------ Read domain file
14963: {
14964: my $loaded;
14965: my %domain;
14966:
14967: sub parse_domain_tab {
14968: my ($lines) = @_;
14969: foreach my $line (@$lines) {
14970: next if ($line =~ /^(\#|\s*$ )/x);
14971:
14972: chomp($line);
14973: my ($name,@elements) = split(/:/,$line,9);
14974: my %this_domain;
14975: foreach my $field ('description', 'auth_def', 'auth_arg_def',
14976: 'lang_def', 'city', 'longi', 'lati',
14977: 'primary') {
14978: $this_domain{$field} = shift(@elements);
14979: }
14980: $domain{$name} = \%this_domain;
14981: }
14982: }
14983:
14984: sub reset_domain_info {
14985: undef($loaded);
14986: undef(%domain);
14987: }
14988:
14989: sub load_domain_tab {
14990: my ($ignore_cache,$nocache) = @_;
14991: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache,$nocache);
14992: my $fh;
14993: if (open($fh,"<",$perlvar{'lonTabDir'}.'/domain.tab')) {
14994: my @lines = <$fh>;
14995: &parse_domain_tab(\@lines);
14996: }
14997: close($fh);
14998: $loaded = 1;
14999: }
15000:
15001: sub domain {
15002: &load_domain_tab() if (!$loaded);
15003:
15004: my ($name,$what) = @_;
15005: return if ( !exists($domain{$name}) );
15006:
15007: if (!$what) {
15008: return $domain{$name}{'description'};
15009: }
15010: return $domain{$name}{$what};
15011: }
15012:
15013: sub domain_info {
15014: &load_domain_tab() if (!$loaded);
15015: return %domain;
15016: }
15017:
15018: }
15019:
15020:
15021: # ------------------------------------------------------------- Read hosts file
15022: {
15023: my %hostname;
15024: my %hostdom;
15025: my %libserv;
15026: my $loaded;
15027: my %name_to_host;
15028: my %internetdom;
15029: my %LC_dns_serv;
15030:
15031: sub parse_hosts_tab {
15032: my ($file) = @_;
15033: foreach my $configline (@$file) {
15034: next if ($configline =~ /^(\#|\s*$ )/x);
15035: chomp($configline);
15036: if ($configline =~ /^\^/) {
15037: if ($configline =~ /^\^([\w.\-]+)/) {
15038: $LC_dns_serv{$1} = 1;
15039: }
15040: next;
15041: }
15042: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
15043: $name=~s/\s//g;
15044: if ($id && $domain && $role && $name) {
15045: if ((exists($hostname{$id})) && ($hostname{$id} ne '')) {
15046: my $curr = $hostname{$id};
15047: my $skip;
15048: if (ref($name_to_host{$curr}) eq 'ARRAY') {
15049: if (($curr eq $name) && (@{$name_to_host{$curr}} == 1)) {
15050: $skip = 1;
15051: } else {
15052: @{$name_to_host{$curr}} = grep { $_ ne $id } @{$name_to_host{$curr}};
15053: }
15054: }
15055: unless ($skip) {
15056: push(@{$name_to_host{$name}},$id);
15057: }
15058: } else {
15059: push(@{$name_to_host{$name}},$id);
15060: }
15061: $hostname{$id}=$name;
15062: $hostdom{$id}=$domain;
15063: if ($role eq 'library') { $libserv{$id}=$name; }
15064: if (defined($protocol)) {
15065: if ($protocol eq 'https') {
15066: $protocol{$id} = $protocol;
15067: } else {
15068: $protocol{$id} = 'http';
15069: }
15070: } else {
15071: $protocol{$id} = 'http';
15072: }
15073: if (defined($intdom)) {
15074: $internetdom{$id} = $intdom;
15075: }
15076: }
15077: }
15078: }
15079:
15080: sub reset_hosts_info {
15081: &purge_remembered();
15082: &reset_domain_info();
15083: &reset_hosts_ip_info();
15084: undef(%internetdom);
15085: undef(%name_to_host);
15086: undef(%hostname);
15087: undef(%hostdom);
15088: undef(%libserv);
15089: undef($loaded);
15090: }
15091:
15092: sub load_hosts_tab {
15093: my ($ignore_cache,$nocache) = @_;
15094: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache,$nocache);
15095: open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab");
15096: my @config = <$config>;
15097: &parse_hosts_tab(\@config);
15098: close($config);
15099: $loaded=1;
15100: }
15101:
15102: sub hostname {
15103: &load_hosts_tab() if (!$loaded);
15104:
15105: my ($lonid) = @_;
15106: return $hostname{$lonid};
15107: }
15108:
15109: sub all_hostnames {
15110: &load_hosts_tab() if (!$loaded);
15111:
15112: return %hostname;
15113: }
15114:
15115: sub all_names {
15116: my ($ignore_cache,$nocache) = @_;
15117: &load_hosts_tab($ignore_cache,$nocache) if (!$loaded);
15118:
15119: return %name_to_host;
15120: }
15121:
15122: sub all_host_domain {
15123: &load_hosts_tab() if (!$loaded);
15124: return %hostdom;
15125: }
15126:
15127: sub all_host_intdom {
15128: &load_hosts_tab() if (!$loaded);
15129: return %internetdom;
15130: }
15131:
15132: sub is_library {
15133: &load_hosts_tab() if (!$loaded);
15134:
15135: return exists($libserv{$_[0]});
15136: }
15137:
15138: sub all_library {
15139: &load_hosts_tab() if (!$loaded);
15140:
15141: return %libserv;
15142: }
15143:
15144: sub unique_library {
15145: #2x reverse removes all hostnames that appear more than once
15146: my %unique = reverse &all_library();
15147: return reverse %unique;
15148: }
15149:
15150: sub get_servers {
15151: &load_hosts_tab() if (!$loaded);
15152:
15153: my ($domain,$type) = @_;
15154: my %possible_hosts = ($type eq 'library') ? %libserv
15155: : %hostname;
15156: my %result;
15157: if (ref($domain) eq 'ARRAY') {
15158: while ( my ($host,$hostname) = each(%possible_hosts)) {
15159: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
15160: $result{$host} = $hostname;
15161: }
15162: }
15163: } else {
15164: while ( my ($host,$hostname) = each(%possible_hosts)) {
15165: if ($hostdom{$host} eq $domain) {
15166: $result{$host} = $hostname;
15167: }
15168: }
15169: }
15170: return %result;
15171: }
15172:
15173: sub get_unique_servers {
15174: my %unique = reverse &get_servers(@_);
15175: return reverse %unique;
15176: }
15177:
15178: sub host_domain {
15179: &load_hosts_tab() if (!$loaded);
15180:
15181: my ($lonid) = @_;
15182: return $hostdom{$lonid};
15183: }
15184:
15185: sub all_domains {
15186: &load_hosts_tab() if (!$loaded);
15187:
15188: my %seen;
15189: my @uniq = grep(!$seen{$_}++, values(%hostdom));
15190: return @uniq;
15191: }
15192:
15193: sub internet_dom {
15194: &load_hosts_tab() if (!$loaded);
15195:
15196: my ($lonid) = @_;
15197: return $internetdom{$lonid};
15198: }
15199:
15200: sub is_LC_dns {
15201: &load_hosts_tab() if (!$loaded);
15202:
15203: my ($hostname) = @_;
15204: return exists($LC_dns_serv{$hostname});
15205: }
15206:
15207: }
15208:
15209: {
15210: my %iphost;
15211: my %name_to_ip;
15212: my %lonid_to_ip;
15213:
15214: sub get_hosts_from_ip {
15215: my ($ip) = @_;
15216: my %iphosts = &get_iphost();
15217: if (ref($iphosts{$ip})) {
15218: return @{$iphosts{$ip}};
15219: }
15220: return;
15221: }
15222:
15223: sub reset_hosts_ip_info {
15224: undef(%iphost);
15225: undef(%name_to_ip);
15226: undef(%lonid_to_ip);
15227: }
15228:
15229: sub get_host_ip {
15230: my ($lonid) = @_;
15231: if (exists($lonid_to_ip{$lonid})) {
15232: return $lonid_to_ip{$lonid};
15233: }
15234: my $name=&hostname($lonid);
15235: my $ip = gethostbyname($name);
15236: return if (!$ip || length($ip) ne 4);
15237: $ip=inet_ntoa($ip);
15238: $name_to_ip{$name} = $ip;
15239: $lonid_to_ip{$lonid} = $ip;
15240: return $ip;
15241: }
15242:
15243: sub get_iphost {
15244: my ($ignore_cache,$nocache) = @_;
15245:
15246: if (!$ignore_cache) {
15247: if (%iphost) {
15248: return %iphost;
15249: }
15250: my ($ip_info,$cached)=
15251: &Apache::lonnet::is_cached_new('iphost','iphost');
15252: if ($cached) {
15253: %iphost = %{$ip_info->[0]};
15254: %name_to_ip = %{$ip_info->[1]};
15255: %lonid_to_ip = %{$ip_info->[2]};
15256: return %iphost;
15257: }
15258: }
15259:
15260: # get yesterday's info for fallback
15261: my %old_name_to_ip;
15262: my ($ip_info,$cached)=
15263: &Apache::lonnet::is_cached_new('iphost','iphost');
15264: if ($cached) {
15265: %old_name_to_ip = %{$ip_info->[1]};
15266: }
15267:
15268: my %name_to_host = &all_names($ignore_cache,$nocache);
15269: foreach my $name (keys(%name_to_host)) {
15270: my $ip;
15271: if (!exists($name_to_ip{$name})) {
15272: $ip = gethostbyname($name);
15273: if (!$ip || length($ip) ne 4) {
15274: if (defined($old_name_to_ip{$name})) {
15275: $ip = $old_name_to_ip{$name};
15276: &logthis("Can't find $name defaulting to old $ip");
15277: } else {
15278: &logthis("Name $name no IP found");
15279: next;
15280: }
15281: } else {
15282: $ip=inet_ntoa($ip);
15283: }
15284: $name_to_ip{$name} = $ip;
15285: } else {
15286: $ip = $name_to_ip{$name};
15287: }
15288: foreach my $id (@{ $name_to_host{$name} }) {
15289: $lonid_to_ip{$id} = $ip;
15290: }
15291: push(@{$iphost{$ip}},@{$name_to_host{$name}});
15292: }
15293: unless ($nocache) {
15294: &do_cache_new('iphost','iphost',
15295: [\%iphost,\%name_to_ip,\%lonid_to_ip],
15296: 48*60*60);
15297: }
15298:
15299: return %iphost;
15300: }
15301:
15302: #
15303: # Given a DNS returns the loncapa host name for that DNS
15304: #
15305: sub host_from_dns {
15306: my ($dns) = @_;
15307: my @hosts;
15308: my $ip;
15309:
15310: if (exists($name_to_ip{$dns})) {
15311: $ip = $name_to_ip{$dns};
15312: }
15313: if (!$ip) {
15314: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
15315: if (length($ip) == 4) {
15316: $ip = &IO::Socket::inet_ntoa($ip);
15317: }
15318: }
15319: if ($ip) {
15320: @hosts = get_hosts_from_ip($ip);
15321: return $hosts[0];
15322: }
15323: return undef;
15324: }
15325:
15326: sub get_internet_names {
15327: my ($lonid) = @_;
15328: return if ($lonid eq '');
15329: my ($idnref,$cached)=
15330: &Apache::lonnet::is_cached_new('internetnames',$lonid);
15331: if ($cached) {
15332: return $idnref;
15333: }
15334: my $ip = &get_host_ip($lonid);
15335: my @hosts = &get_hosts_from_ip($ip);
15336: my %iphost = &get_iphost();
15337: my (@idns,%seen);
15338: foreach my $id (@hosts) {
15339: my $dom = &host_domain($id);
15340: my $prim_id = &domain($dom,'primary');
15341: my $prim_ip = &get_host_ip($prim_id);
15342: next if ($seen{$prim_ip});
15343: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
15344: foreach my $id (@{$iphost{$prim_ip}}) {
15345: my $intdom = &internet_dom($id);
15346: unless (grep(/^\Q$intdom\E$/,@idns)) {
15347: push(@idns,$intdom);
15348: }
15349: }
15350: }
15351: $seen{$prim_ip} = 1;
15352: }
15353: return &do_cache_new('internetnames',$lonid,\@idns,12*60*60);
15354: }
15355:
15356: }
15357:
15358: sub all_loncaparevs {
15359: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11);
15360: }
15361:
15362: # ---------------------------------------------------------- Read loncaparev table
15363: {
15364: sub load_loncaparevs {
15365: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
15366: if (open(my $config,"<","$perlvar{'lonTabDir'}/loncaparevs.tab")) {
15367: while (my $configline=<$config>) {
15368: chomp($configline);
15369: my ($hostid,$loncaparev)=split(/:/,$configline);
15370: $loncaparevs{$hostid}=$loncaparev;
15371: }
15372: close($config);
15373: }
15374: }
15375: }
15376: }
15377:
15378: # ---------------------------------------------------------- Read serverhostID table
15379: {
15380: sub load_serverhomeIDs {
15381: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
15382: if (open(my $config,"<","$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
15383: while (my $configline=<$config>) {
15384: chomp($configline);
15385: my ($name,$id)=split(/:/,$configline);
15386: $serverhomeIDs{$name}=$id;
15387: }
15388: close($config);
15389: }
15390: }
15391: }
15392: }
15393:
15394:
15395: BEGIN {
15396:
15397: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
15398: unless ($readit) {
15399: {
15400: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
15401: %perlvar = (%perlvar,%{$configvars});
15402: }
15403:
15404:
15405: # ------------------------------------------------------ Read spare server file
15406: {
15407: open(my $config,"<","$perlvar{'lonTabDir'}/spare.tab");
15408:
15409: while (my $configline=<$config>) {
15410: chomp($configline);
15411: if ($configline) {
15412: my ($host,$type) = split(':',$configline,2);
15413: if (!defined($type) || $type eq '') { $type = 'default' };
15414: push(@{ $spareid{$type} }, $host);
15415: }
15416: }
15417: close($config);
15418: }
15419: # ------------------------------------------------------------ Read permissions
15420: {
15421: open(my $config,"<","$perlvar{'lonTabDir'}/roles.tab");
15422:
15423: while (my $configline=<$config>) {
15424: chomp($configline);
15425: if ($configline) {
15426: my ($role,$perm)=split(/ /,$configline);
15427: if ($perm ne '') { $pr{$role}=$perm; }
15428: }
15429: }
15430: close($config);
15431: }
15432:
15433: # -------------------------------------------- Read plain texts for permissions
15434: {
15435: open(my $config,"<","$perlvar{'lonTabDir'}/rolesplain.tab");
15436:
15437: while (my $configline=<$config>) {
15438: chomp($configline);
15439: if ($configline) {
15440: my ($short,@plain)=split(/:/,$configline);
15441: %{$prp{$short}} = ();
15442: if (@plain > 0) {
15443: $prp{$short}{'std'} = $plain[0];
15444: for (my $i=1; $i<@plain; $i++) {
15445: $prp{$short}{'alt'.$i} = $plain[$i];
15446: }
15447: }
15448: }
15449: }
15450: close($config);
15451: }
15452:
15453: # ---------------------------------------------------------- Read package table
15454: {
15455: open(my $config,"<","$perlvar{'lonTabDir'}/packages.tab");
15456:
15457: while (my $configline=<$config>) {
15458: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
15459: chomp($configline);
15460: my ($short,$plain)=split(/:/,$configline);
15461: my ($pack,$name)=split(/\&/,$short);
15462: if ($plain ne '') {
15463: $packagetab{$pack.'&'.$name.'&name'}=$name;
15464: $packagetab{$short}=$plain;
15465: }
15466: }
15467: close($config);
15468: }
15469:
15470: # ---------------------------------------------------------- Read loncaparev table
15471:
15472: &load_loncaparevs();
15473:
15474: # ---------------------------------------------------------- Read serverhostID table
15475:
15476: &load_serverhomeIDs();
15477:
15478: # ---------------------------------------------------------- Read releaseslist XML
15479: {
15480: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
15481: if (-e $file) {
15482: my $parser = HTML::LCParser->new($file);
15483: while (my $token = $parser->get_token()) {
15484: if ($token->[0] eq 'S') {
15485: my $item = $token->[1];
15486: my $name = $token->[2]{'name'};
15487: my $value = $token->[2]{'value'};
15488: my $valuematch = $token->[2]{'valuematch'};
15489: my $namematch = $token->[2]{'namematch'};
15490: if ($item eq 'parameter') {
15491: if (($namematch ne '') || (($name ne '') && ($value ne '' || $valuematch ne ''))) {
15492: my $release = $parser->get_text();
15493: $release =~ s/(^\s*|\s*$ )//gx;
15494: $needsrelease{$item.':'.$name.':'.$value.':'.$valuematch.':'.$namematch} = $release;
15495: }
15496: } elsif ($item ne '' && $name ne '') {
15497: my $release = $parser->get_text();
15498: $release =~ s/(^\s*|\s*$ )//gx;
15499: $needsrelease{$item.':'.$name.':'.$value} = $release;
15500: }
15501: }
15502: }
15503: }
15504: }
15505:
15506: # ---------------------------------------------------------- Read managers table
15507: {
15508: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
15509: if (open(my $config,"<","$perlvar{'lonTabDir'}/managers.tab")) {
15510: while (my $configline=<$config>) {
15511: chomp($configline);
15512: next if ($configline =~ /^\#/);
15513: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
15514: $managerstab{$configline} = 1;
15515: }
15516: }
15517: close($config);
15518: }
15519: }
15520: }
15521:
15522: # ------------- set up temporary directory
15523: {
15524: $tmpdir = LONCAPA::tempdir();
15525:
15526: }
15527:
15528: # ------------- set default texengine (domain default overrides this)
15529: {
15530: $deftex = LONCAPA::texengine();
15531: }
15532:
15533: # ------------- set default minimum length for passwords for internal auth users
15534: {
15535: $passwdmin = LONCAPA::passwd_min();
15536: }
15537:
15538: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
15539: 'compress_threshold'=> 20_000,
15540: });
15541:
15542: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
15543: $dumpcount=0;
15544: $locknum=0;
15545:
15546: &logtouch();
15547: &logthis('<font color="yellow">INFO: Read configuration</font>');
15548: $readit=1;
15549: {
15550: use integer;
15551: my $test=(2**32)+1;
15552: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
15553: &logthis(" Detected 64bit platform ($_64bit)");
15554: }
15555: }
15556: }
15557:
15558: 1;
15559: __END__
15560:
15561: =pod
15562:
15563: =head1 NAME
15564:
15565: Apache::lonnet - Subroutines to ask questions about things in the network.
15566:
15567: =head1 SYNOPSIS
15568:
15569: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
15570:
15571: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
15572:
15573: Common parameters:
15574:
15575: =over 4
15576:
15577: =item *
15578:
15579: $uname : an internal username (if $cname expecting a course Id specifically)
15580:
15581: =item *
15582:
15583: $udom : a domain (if $cdom expecting a course's domain specifically)
15584:
15585: =item *
15586:
15587: $symb : a resource instance identifier
15588:
15589: =item *
15590:
15591: $namespace : the name of a .db file that contains the data needed or
15592: being set.
15593:
15594: =back
15595:
15596: =head1 OVERVIEW
15597:
15598: lonnet provides subroutines which interact with the
15599: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
15600: about classes, users, and resources.
15601:
15602: For many of these objects you can also use this to store data about
15603: them or modify them in various ways.
15604:
15605: =head2 Symbs
15606:
15607: To identify a specific instance of a resource, LON-CAPA uses symbols
15608: or "symbs"X<symb>. These identifiers are built from the URL of the
15609: map, the resource number of the resource in the map, and the URL of
15610: the resource itself. The latter is somewhat redundant, but might help
15611: if maps change.
15612:
15613: An example is
15614:
15615: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
15616:
15617: The respective map entry is
15618:
15619: <resource id="19" src="/res/msu/korte/tests/part12.problem"
15620: title="Problem 2">
15621: </resource>
15622:
15623: Symbs are used by the random number generator, as well as to store and
15624: restore data specific to a certain instance of for example a problem.
15625:
15626: =head2 Storing And Retrieving Data
15627:
15628: X<store()>X<cstore()>X<restore()>Three of the most important functions
15629: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
15630: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
15631: is is the non-critical message twin of cstore. These functions are for
15632: handlers to store a perl hash to a user's permanent data space in an
15633: easy manner, and to retrieve it again on another call. It is expected
15634: that a handler would use this once at the beginning to retrieve data,
15635: and then again once at the end to send only the new data back.
15636:
15637: The data is stored in the user's data directory on the user's
15638: homeserver under the ID of the course.
15639:
15640: The hash that is returned by restore will have all of the previous
15641: value for all of the elements of the hash.
15642:
15643: Example:
15644:
15645: #creating a hash
15646: my %hash;
15647: $hash{'foo'}='bar';
15648:
15649: #storing it
15650: &Apache::lonnet::cstore(\%hash);
15651:
15652: #changing a value
15653: $hash{'foo'}='notbar';
15654:
15655: #adding a new value
15656: $hash{'bar'}='foo';
15657: &Apache::lonnet::cstore(\%hash);
15658:
15659: #retrieving the hash
15660: my %history=&Apache::lonnet::restore();
15661:
15662: #print the hash
15663: foreach my $key (sort(keys(%history))) {
15664: print("\%history{$key} = $history{$key}");
15665: }
15666:
15667: Will print out:
15668:
15669: %history{1:foo} = bar
15670: %history{1:keys} = foo:timestamp
15671: %history{1:timestamp} = 990455579
15672: %history{2:bar} = foo
15673: %history{2:foo} = notbar
15674: %history{2:keys} = foo:bar:timestamp
15675: %history{2:timestamp} = 990455580
15676: %history{bar} = foo
15677: %history{foo} = notbar
15678: %history{timestamp} = 990455580
15679: %history{version} = 2
15680:
15681: Note that the special hash entries C<keys>, C<version> and
15682: C<timestamp> were added to the hash. C<version> will be equal to the
15683: total number of versions of the data that have been stored. The
15684: C<timestamp> attribute will be the UNIX time the hash was
15685: stored. C<keys> is available in every historical section to list which
15686: keys were added or changed at a specific historical revision of a
15687: hash.
15688:
15689: B<Warning>: do not store the hash that restore returns directly. This
15690: will cause a mess since it will restore the historical keys as if the
15691: were new keys. I.E. 1:foo will become 1:1:foo etc.
15692:
15693: Calling convention:
15694:
15695: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
15696: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$laststore);
15697:
15698: For more detailed information, see lonnet specific documentation.
15699:
15700: =head1 RETURN MESSAGES
15701:
15702: =over 4
15703:
15704: =item * B<con_lost>: unable to contact remote host
15705:
15706: =item * B<con_delayed>: unable to contact remote host, message will be delivered
15707: when the connection is brought back up
15708:
15709: =item * B<con_failed>: unable to contact remote host and unable to save message
15710: for later delivery
15711:
15712: =item * B<error:>: an error a occurred, a description of the error follows the :
15713:
15714: =item * B<no_such_host>: unable to fund a host associated with the user/domain
15715: that was requested
15716:
15717: =back
15718:
15719: =head1 PUBLIC SUBROUTINES
15720:
15721: =head2 Session Environment Functions
15722:
15723: =over 4
15724:
15725: =item *
15726: X<appenv()>
15727: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
15728: the user envirnoment file, and will be restored for each access this
15729: user makes during this session, also modifies the %env for the current
15730: process. Optional rolesarrayref - if defined contains a reference to an array
15731: of roles which are exempt from the restriction on modifying user.role entries
15732: in the user's environment.db and in %env.
15733:
15734: =item *
15735: X<delenv()>
15736: B<delenv($delthis,$regexp)>: removes all items from the session
15737: environment file that begin with $delthis. If the
15738: optional second arg - $regexp - is true, $delthis is treated as a
15739: regular expression, otherwise \Q$delthis\E is used.
15740: The values are also deleted from the current processes %env.
15741:
15742: =item * get_env_multiple($name)
15743:
15744: gets $name from the %env hash, it seemlessly handles the cases where multiple
15745: values may be defined and end up as an array ref.
15746:
15747: returns an array of values
15748:
15749: =back
15750:
15751: =head2 User Information
15752:
15753: =over 4
15754:
15755: =item *
15756: X<queryauthenticate()>
15757: B<queryauthenticate($uname,$udom)>: try to determine user's current
15758: authentication scheme
15759:
15760: =item *
15761: X<authenticate()>
15762: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
15763: authenticate user from domain's lib servers (first use the current
15764: one). C<$upass> should be the users password.
15765: $checkdefauth is optional (value is 1 if a check should be made to
15766: authenticate user using default authentication method, and allow
15767: account creation if username does not have account in the domain).
15768: $clientcancheckhost is optional (value is 1 if checking whether the
15769: server can host will occur on the client side in lonauth.pm).
15770:
15771: =item *
15772: X<homeserver()>
15773: B<homeserver($uname,$udom)>: find the server which has
15774: the user's directory and files (there must be only one), this caches
15775: the answer, and also caches if there is a borken connection.
15776:
15777: =item *
15778: X<idget()>
15779: B<idget($udom,$idsref,$namespace)>: find the usernames behind either
15780: a list of student/employee IDs or clicker IDs
15781: (student/employee IDs are a unique resource in a domain, there must be
15782: only 1 ID per username, and only 1 username per ID in a specific domain).
15783: clickerIDs are not necessarily unique, as students might share clickers.
15784: (returns hash: id=>name,id=>name)
15785:
15786: =item *
15787: X<idrget()>
15788: B<idrget($udom,@unames)>: find the IDs behind a list of
15789: usernames (returns hash: name=>id,name=>id)
15790:
15791: =item *
15792: X<idput()>
15793: B<idput($udom,$idsref,$uhome,$namespace)>: store away a list of
15794: names and associated student/employee IDs or clicker IDs.
15795:
15796: =item *
15797: X<iddel()>
15798: B<iddel($udom,$idshashref,$uhome,$namespace)>: delete unwanted
15799: student/employee ID or clicker ID username look-ups from domain.
15800: The homeserver ($uhome) and namespace ($namespace) are optional.
15801: If no $uhome is provided, it will be determined usig &homeserver()
15802: for each user. If no $namespace is provided, the default is ids.
15803:
15804: =item *
15805: X<updateclickers()>
15806: B<updateclickers($udom,$action,$idshashref,$uhome,$critical)>: update
15807: clicker ID-to-username look-ups in clickers.db on library server.
15808: Permitted actions are add or del (i.e., add or delete). The
15809: clickers.db contains clickerID as keys (escaped), and each corresponding
15810: value is an escaped comma-separated list of usernames (for whom the
15811: library server is the homeserver), who registered that particular ID.
15812: If $critical is true, the update will be sent via &critical, otherwise
15813: &reply() will be used.
15814:
15815: =item *
15816: X<rolesinit()>
15817: B<rolesinit($udom,$username)>: get user privileges.
15818: returns user role, first access and timer interval hashes
15819:
15820: =item *
15821: X<privileged()>
15822: B<privileged($username,$domain)>: returns a true if user has a
15823: privileged and active role (i.e. su or dc), false otherwise.
15824:
15825: =item *
15826: X<getsection()>
15827: B<getsection($udom,$uname,$cname)>: finds the section of student in the
15828: course $cname, return section name/number or '' for "not in course"
15829: and '-1' for "no section"
15830:
15831: =item *
15832: X<userenvironment()>
15833: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
15834: passed in @what from the requested user's environment, returns a hash
15835:
15836: =item *
15837: X<userlog_query()>
15838: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
15839: activity.log file. %filters defines filters applied when parsing the
15840: log file. These can be start or end timestamps, or the type of action
15841: - log to look for Login or Logout events, check for Checkin or
15842: Checkout, role for role selection. The response is in the form
15843: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
15844: escaped strings of the action recorded in the activity.log file.
15845:
15846: =back
15847:
15848: =head2 User Roles
15849:
15850: =over 4
15851:
15852: =item *
15853:
15854: allowed($priv,$uri,$symb,$role,$clientip,$noblockcheck) : check for a user privilege;
15855: returns codes for allowed actions.
15856:
15857: The first argument is required, all others are optional.
15858:
15859: $priv is the privilege being checked.
15860: $uri contains additional information about what is being checked for access (e.g.,
15861: URL, course ID etc.).
15862: $symb is the unique resource instance identifier in a course; if needed,
15863: but not provided, it will be retrieved via a call to &symbread().
15864: $role is the role for which a priv is being checked (only used if priv is evb).
15865: $clientip is the user's IP address (only used when checking for access to portfolio
15866: files).
15867: $noblockcheck, if true, skips calls to &has_comm_blocking() for the bre priv. This
15868: prevents recursive calls to &allowed.
15869:
15870: F: full access
15871: U,I,K: authentication modes (cxx only)
15872: '': forbidden
15873: 1: user needs to choose course
15874: 2: browse allowed
15875: A: passphrase authentication needed
15876: B: access temporarily blocked because of a blocking event in a course.
15877: D: access blocked because access is required via session initiated via deep-link
15878:
15879: =item *
15880:
15881: constructaccess($url,$setpriv) : check for access to construction space URL
15882:
15883: See if the owner domain and name in the URL match those in the
15884: expected environment. If so, return three element list
15885: ($ownername,$ownerdomain,$ownerhome).
15886:
15887: Otherwise return the null string.
15888:
15889: If second argument 'setpriv' is true, it assigns the privileges,
15890: and returns the same three element list, unless the owner has
15891: blocked "ad hoc" Domain Coordinator access to the Author Space,
15892: in which case the null string is returned.
15893:
15894: =item *
15895:
15896: definerole($rolename,$sysrole,$domrole,$courole,$uname,$udom) : define role;
15897: define a custom role rolename set privileges in format of lonTabs/roles.tab
15898: for system, domain, and course level. $uname and $udom are optional (current
15899: user's username and domain will be used when either of $uname or $udom are absent.
15900:
15901: =item *
15902:
15903: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
15904: (rolesplain.tab); plain text explanation of a user role term.
15905: $type is Course (default) or Community.
15906: If $forcedefault evaluates to true, text returned will be default
15907: text for $type. Otherwise, if this is a course, the text returned
15908: will be a custom name for the role (if defined in the course's
15909: environment). If no custom name is defined the default is returned.
15910:
15911: =item *
15912:
15913: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
15914: All arguments are optional. Returns a hash of a roles, either for
15915: co-author/assistant author roles for a user's Construction Space
15916: (default), or if $context is 'userroles', roles for the user himself,
15917: In the hash, keys are set to colon-separated $uname,$udom,$role, and
15918: (optionally) if $withsec is true, a fourth colon-separated item - $section.
15919: For each key, value is set to colon-separated start and end times for
15920: the role. If no username and domain are specified, will default to
15921: current user/domain. Types, roles, and roledoms are references to arrays
15922: of role statuses (active, future or previous), roles
15923: (e.g., cc,in, st etc.) and domains of the roles which can be used
15924: to restrict the list of roles reported. If no array ref is
15925: provided for types, will default to return only active roles.
15926:
15927: =item *
15928:
15929: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
15930: user: $uname:$udom has a role in the course: $cdom_$cnum.
15931:
15932: Additional optional arguments are: $type (if role checking is to be restricted
15933: to certain user status types -- previous (expired roles), active (currently
15934: available roles) or future (roles available in the future), and
15935: $hideprivileged -- if true will not report course roles for users who
15936: have active Domain Coordinator role in course's domain or in additional
15937: domains (specified in 'Domains to check for privileged users' in course
15938: environment -- set via: Course Settings -> Classlists and staff listing).
15939:
15940: =item *
15941:
15942: privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
15943: $username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
15944: $possdomains and $possroles are optional array refs -- to domains to check and
15945: roles to check. If $possdomains is not specified, a dump will be done of the
15946: users' roles.db to check for a dc or su role in any domain. This can be
15947: time consuming if &privileged is called repeatedly (e.g., when displaying a
15948: classlist), so in such cases, supplying a $possdomains array is preferred, as
15949: this then allows &privileged_by_domain() to be used, which caches the identity
15950: of privileged users, eliminating the need for repeated calls to &dump().
15951:
15952: =item *
15953:
15954: privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
15955: where the outer hash keys are domains specified in the $possdomains array ref,
15956: next inner hash keys are privileged roles specified in the $roles array ref,
15957: and the innermost hash contains key = value pairs for username:domain = end:start
15958: for active or future "privileged" users with that role in that domain. To avoid
15959: repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
15960: innerhash are cached using priv_$role and $dom as the identifiers.
15961:
15962: =back
15963:
15964: =head2 User Modification
15965:
15966: =over 4
15967:
15968: =item *
15969:
15970: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
15971: user for the level given by URL. Optional start and end dates (leave empty
15972: string or zero for "no date")
15973:
15974: =item *
15975:
15976: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
15977: change a users, password, possible return values are: ok,
15978: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
15979: refused
15980:
15981: =item *
15982:
15983: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
15984:
15985: =item *
15986:
15987: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
15988: $forceid,$desiredhome,$email,$inststatus,$candelete) :
15989:
15990: will update user information (firstname,middlename,lastname,generation,
15991: permanentemail), and if forceid is true, student/employee ID also.
15992: A user's institutional affiliation(s) can also be updated.
15993: User information fields will not be overwritten with empty entries
15994: unless the field is included in the $candelete array reference.
15995: This array is included when a single user is modified via "Manage Users",
15996: or when Autoupdate.pl is run by cron in a domain.
15997:
15998: =item *
15999:
16000: modifystudent
16001:
16002: modify a student's enrollment and identification information.
16003: The course id is resolved based on the current user's environment.
16004: This means the invoking user must be a course coordinator or otherwise
16005: associated with a course.
16006:
16007: This call is essentially a wrapper for lonnet::modifyuser and
16008: lonnet::modify_student_enrollment
16009:
16010: Inputs:
16011:
16012: =over 4
16013:
16014: =item B<$udom> Student's loncapa domain
16015:
16016: =item B<$uname> Student's loncapa login name
16017:
16018: =item B<$uid> Student/Employee ID
16019:
16020: =item B<$umode> Student's authentication mode
16021:
16022: =item B<$upass> Student's password
16023:
16024: =item B<$first> Student's first name
16025:
16026: =item B<$middle> Student's middle name
16027:
16028: =item B<$last> Student's last name
16029:
16030: =item B<$gene> Student's generation
16031:
16032: =item B<$usec> Student's section in course
16033:
16034: =item B<$end> Unix time of the roles expiration
16035:
16036: =item B<$start> Unix time of the roles start date
16037:
16038: =item B<$forceid> If defined, allow $uid to be changed
16039:
16040: =item B<$desiredhome> server to use as home server for student
16041:
16042: =item B<$email> Student's permanent e-mail address
16043:
16044: =item B<$type> Type of enrollment (auto or manual)
16045:
16046: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
16047:
16048: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
16049:
16050: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
16051:
16052: =item B<$context> role change context (shown in User Management Logs display in a course)
16053:
16054: =item B<$inststatus> institutional status of user - : separated string of escaped status types
16055:
16056: =item B<$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.
16057:
16058: =back
16059:
16060: =item *
16061:
16062: modify_student_enrollment
16063:
16064: Change a student's enrollment status in a class. The environment variable
16065: 'role.request.course' must be defined for this function to proceed.
16066:
16067: Inputs:
16068:
16069: =over 4
16070:
16071: =item $udom, student's domain
16072:
16073: =item $uname, student's name
16074:
16075: =item $uid, student's user id
16076:
16077: =item $first, student's first name
16078:
16079: =item $middle
16080:
16081: =item $last
16082:
16083: =item $gene
16084:
16085: =item $usec
16086:
16087: =item $end
16088:
16089: =item $start
16090:
16091: =item $type
16092:
16093: =item $locktype
16094:
16095: =item $cid
16096:
16097: =item $selfenroll
16098:
16099: =item $context
16100:
16101: =item $credits, number of credits student will earn from this class
16102:
16103: =item $instsec, institutional course section code for student
16104:
16105: =back
16106:
16107:
16108: =item *
16109:
16110: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
16111: custom role; give a custom role to a user for the level given by URL. Specify
16112: name and domain of role author, and role name
16113:
16114: =item *
16115:
16116: revokerole($udom,$uname,$url,$role) : revoke a role for url
16117:
16118: =item *
16119:
16120: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
16121:
16122: =back
16123:
16124: =head2 Course Infomation
16125:
16126: =over 4
16127:
16128: =item *
16129:
16130: coursedescription($courseid,$options) : returns a hash of information about the
16131: specified course id, including all environment settings for the
16132: course, the description of the course will be in the hash under the
16133: key 'description'
16134:
16135: $options is an optional parameter that if supplied is a hash reference that controls
16136: what how this function works. It has the following key/values:
16137:
16138: =over 4
16139:
16140: =item freshen_cache
16141:
16142: If defined, and the environment cache for the course is valid, it is
16143: returned in the returned hash.
16144:
16145: =item one_time
16146:
16147: If defined, the last cache time is set to _now_
16148:
16149: =item user
16150:
16151: If defined, the supplied username is used instead of the current user.
16152:
16153:
16154: =back
16155:
16156: =item *
16157:
16158: resdata($name,$domain,$type,@which) : request for current parameter
16159: setting for a specific $type, where $type is either 'course' or 'user',
16160: @what should be a list of parameters to ask about. This routine caches
16161: answers for 10 minutes.
16162:
16163: =item *
16164:
16165: get_courseresdata($courseid, $domain) : dump the entire course resource
16166: data base, returning a hash that is keyed by the resource name and has
16167: values that are the resource value. I believe that the timestamps and
16168: versions are also returned.
16169:
16170: get_numsuppfiles($cnum,$cdom) : retrieve number of files in a course's
16171: supplemental content area. This routine caches the number of files for
16172: 10 minutes.
16173:
16174: =back
16175:
16176: =head2 Course Modification
16177:
16178: =over 4
16179:
16180: =item *
16181:
16182: writecoursepref($courseid,%prefs) : write preferences (environment
16183: database) for a course
16184:
16185: =item *
16186:
16187: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
16188:
16189: =item *
16190:
16191: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
16192:
16193: =item *
16194:
16195: is_course($courseid), is_course($cdom, $cnum)
16196:
16197: Accepts either a combined $courseid (in the form of domain_courseid) or the
16198: two component version $cdom, $cnum. It checks if the specified course exists.
16199:
16200: Returns:
16201: undef if the course doesn't exist, otherwise
16202: in scalar context the combined courseid.
16203: in list context the two components of the course identifier, domain and
16204: courseid.
16205:
16206: =back
16207:
16208: =head2 Bubblesheet Configuration
16209:
16210: =over 4
16211:
16212: =item *
16213:
16214: get_scantron_config($which)
16215:
16216: $which - the name of the configuration to parse from the file.
16217:
16218: Parses and returns the bubblesheet configuration line selected as a
16219: hash of configuration file fields.
16220:
16221:
16222: Returns:
16223: If the named configuration is not in the file, an empty
16224: hash is returned.
16225:
16226: a hash with the fields
16227: name - internal name for the this configuration setup
16228: description - text to display to operator that describes this config
16229: CODElocation - if 0 or the string 'none'
16230: - no CODE exists for this config
16231: if -1 || the string 'letter'
16232: - a CODE exists for this config and is
16233: a string of letters
16234: Unsupported value (but planned for future support)
16235: if a positive integer
16236: - The CODE exists as the first n items from
16237: the question section of the form
16238: if the string 'number'
16239: - The CODE exists for this config and is
16240: a string of numbers
16241: CODEstart - (only matter if a CODE exists) column in the line where
16242: the CODE starts
16243: CODElength - length of the CODE
16244: IDstart - column where the student/employee ID starts
16245: IDlength - length of the student/employee ID info
16246: Qstart - column where the information from the bubbled
16247: 'questions' start
16248: Qlength - number of columns comprising a single bubble line from
16249: the sheet. (usually either 1 or 10)
16250: Qon - either a single character representing the character used
16251: to signal a bubble was chosen in the positional setup, or
16252: the string 'letter' if the letter of the chosen bubble is
16253: in the final, or 'number' if a number representing the
16254: chosen bubble is in the file (1->A 0->J)
16255: Qoff - the character used to represent that a bubble was
16256: left blank
16257: PaperID - if the scanning process generates a unique number for each
16258: sheet scanned the column that this ID number starts in
16259: PaperIDlength - number of columns that comprise the unique ID number
16260: for the sheet of paper
16261: FirstName - column that the first name starts in
16262: FirstNameLength - number of columns that the first name spans
16263: LastName - column that the last name starts in
16264: LastNameLength - number of columns that the last name spans
16265: BubblesPerRow - number of bubbles available in each row used to
16266: bubble an answer. (If not specified, 10 assumed).
16267:
16268:
16269: =item *
16270:
16271: get_scantronformat_file($cdom)
16272:
16273: $cdom - the course's domain (optional); if not supplied, uses
16274: domain for current $env{'request.course.id'}.
16275:
16276: Returns an array containing lines from the scantron format file for
16277: the domain of the course.
16278:
16279: If a url for a custom.tab file is listed in domain's configuration.db,
16280: lines are from this file.
16281:
16282: Otherwise, if a default.tab has been published in RES space by the
16283: domainconfig user, lines are from this file.
16284:
16285: Otherwise, fall back to getting lines from the legacy file on the
16286: local server: /home/httpd/lonTabs/default_scantronformat.tab
16287:
16288: =back
16289:
16290: =head2 Resource Subroutines
16291:
16292: =over 4
16293:
16294: =item *
16295:
16296: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
16297:
16298: =item *
16299:
16300: repcopy($filename) : subscribes to the requested file, and attempts to
16301: replicate from the owning library server, Might return
16302: 'unavailable', 'not_found', 'forbidden', 'ok', or
16303: 'bad_request', also attempts to grab the metadata for the
16304: resource. Expects the local filesystem pathname
16305: (/home/httpd/html/res/....)
16306:
16307: =back
16308:
16309: =head2 Resource Information
16310:
16311: =over 4
16312:
16313: =item *
16314:
16315: EXT($varname,$symb,$udom,$uname,$usection,$recurse,$cid) : evaluates
16316: and returns the value of a variety of different possible values,
16317: $varname should be a request string, and the other parameters can be
16318: used to specify who and what one is asking about. Ordinarily, $cid
16319: does not need to be specified, as it is retrived from
16320: $env{'request.course.id'}, but &Apache::lonnet::EXT() is called
16321: within lonuserstate::loadmap() when initializing a course, before
16322: $env{'request.course.id'} has been set, so it needs to be provided
16323: in that one case.
16324:
16325: Possible values for $varname are environment.lastname (or other item
16326: from the envirnment hash), user.name (or someother aspect about the
16327: user), resource.0.maxtries (or some other part and parameter of a
16328: resource)
16329:
16330: =item *
16331:
16332: directcondval($number) : get current value of a condition; reads from a state
16333: string
16334:
16335: =item *
16336:
16337: condval($condidx) : value of condition index based on state
16338:
16339: =item *
16340:
16341: metadata($uri,$what,$toolsymb,$liburi,$prefix,$depthcount) : request a
16342: resource's metadata, $what should be either a specific key, or either
16343: 'keys' (to get a list of possible keys) or 'packages' to get a list of
16344: packages that this resource currently uses, the last 3 arguments are
16345: only used internally for recursive metadata.
16346:
16347: the toolsymb is only used where the uri is for an external tool (for which
16348: the uri as well as the symb are guaranteed to be unique).
16349:
16350: this function automatically caches all requests except any made recursively
16351: to retrieve a list of metadata keys for an imported library file ($liburi is
16352: defined).
16353:
16354: =item *
16355:
16356: metadata_query($query,$custom,$customshow) : make a metadata query against the
16357: network of library servers; returns file handle of where SQL and regex results
16358: will be stored for query
16359:
16360: =item *
16361:
16362: symbread($filename,$donotrecurse,$ignorecachednull,$checkforblock,$possibles) :
16363: return symbolic list entry (all arguments optional).
16364:
16365: Args: filename is the filename (including path) for the file for which a symb
16366: is required; donotrecurse, if true will prevent calls to allowed() being made
16367: to check access status if more than one resource was found in the bighash
16368: (see rev. 1.249) to avoid an infinite loop if an ambiguous resource is part of
16369: a randompick); ignorecachednull, if true will prevent a symb of '' being
16370: returned if $env{$cache_str} is defined as ''; checkforblock if true will
16371: cause possible symbs to be checked to determine if they are subject to content
16372: blocking, if so they will not be included as possible symbs; possibles is a
16373: ref to a hash, which, as a side effect, will be populated with all possible
16374: symbs (content blocking not tested).
16375:
16376: returns the data handle
16377:
16378: =item *
16379:
16380: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
16381: and is a possible symb for the URL in $thisfn, and if is an encrypted
16382: resource that the user accessed using /enc/ returns a 1 on success, 0
16383: on failure, user must be in a course, as it assumes the existence of
16384: the course initial hash, and uses $env('request.course.id'}. The third
16385: arg is an optional reference to a scalar. If this arg is passed in the
16386: call to symbverify, it will be set to 1 if the symb has been set to be
16387: encrypted; otherwise it will be null.
16388:
16389: =item *
16390:
16391: symbclean($symb) : removes versions numbers from a symb, returns the
16392: cleaned symb
16393:
16394: =item *
16395:
16396: is_on_map($uri) : checks if the $uri is somewhere on the current
16397: course map, user must be in a course for it to work.
16398:
16399: =item *
16400:
16401: numval($salt) : return random seed value (addend for rndseed)
16402:
16403: =item *
16404:
16405: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
16406: a random seed, all arguments are optional, if they aren't sent it uses the
16407: environment to derive them. Note: if symb isn't sent and it can't get one
16408: from &symbread it will use the current time as its return value
16409:
16410: =item *
16411:
16412: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
16413: unfakeable, receipt
16414:
16415: =item *
16416:
16417: receipt() : API to ireceipt working off of env values; given out to users
16418:
16419: =item *
16420:
16421: countacc($url) : count the number of accesses to a given URL
16422:
16423: =item *
16424:
16425: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
16426:
16427: =item *
16428:
16429: checkin($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 $tcrsid)
16430:
16431: =item *
16432:
16433: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
16434:
16435: =item *
16436:
16437: devalidate($symb) : devalidate temporary spreadsheet calculations,
16438: forcing spreadsheet to reevaluate the resource scores next time.
16439:
16440: =item *
16441:
16442: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
16443: when viewing in course context.
16444:
16445: input: six args -- filename (decluttered), course number, course domain,
16446: url, symb (if registered) and group (if this is a
16447: group item -- e.g., bulletin board, group page etc.).
16448:
16449: output: array of five scalars --
16450: $cfile -- url for file editing if editable on current server
16451: $home -- homeserver of resource (i.e., for author if published,
16452: or course if uploaded.).
16453: $switchserver -- 1 if server switch will be needed.
16454: $forceedit -- 1 if icon/link should be to go to edit mode
16455: $forceview -- 1 if icon/link should be to go to view mode
16456:
16457: =item *
16458:
16459: is_course_upload($file,$cnum,$cdom)
16460:
16461: Used in course context to determine if current file was uploaded to
16462: the course (i.e., would be found in /userfiles/docs on the course's
16463: homeserver.
16464:
16465: input: 3 args -- filename (decluttered), course number and course domain.
16466: output: boolean -- 1 if file was uploaded.
16467:
16468: =back
16469:
16470: =head2 Storing/Retreiving Data
16471:
16472: =over 4
16473:
16474: =item *
16475:
16476: store($storehash,$symb,$namespace,$udom,$uname,$laststore) : stores hash
16477: permanently for this url; hashref needs to be given and should be a \%hashname;
16478: the remaining args aren't required and if they aren't passed or are '' they will
16479: be derived from the env (with the exception of $laststore, which is an
16480: optional arg used when a user's submission is stored in grading).
16481: $laststore is $version=$timestamp, where $version is the most recent version
16482: number retrieved for the corresponding $symb in the $namespace db file, and
16483: $timestamp is the timestamp for that transaction (UNIX time).
16484: $laststore is currently only passed when cstore() is called by
16485: structuretags::finalize_storage().
16486:
16487: =item *
16488:
16489: cstore($storehash,$symb,$namespace,$udom,$uname,$laststore) : same as store
16490: but uses critical subroutine
16491:
16492: =item *
16493:
16494: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
16495: all args are optional
16496:
16497: =item *
16498:
16499: dumpstore($namespace,$udom,$uname,$regexp,$range) :
16500: dumps the complete (or key matching regexp) namespace into a hash
16501: ($udom, $uname, $regexp, $range are optional) for a namespace that is
16502: normally &store()ed into
16503:
16504: $range should be either an integer '100' (give me the first 100
16505: matching records)
16506: or be two integers sperated by a - with no spaces
16507: '30-50' (give me the 30th through the 50th matching
16508: records)
16509:
16510:
16511: =item *
16512:
16513: putstore($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog) :
16514: replaces a &store() version of data with a replacement set of data
16515: for a particular resource in a namespace passed in the $storehash hash
16516: reference. If $tolog is true, the transaction is logged in the courselog
16517: with an action=PUTSTORE.
16518:
16519: =item *
16520:
16521: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
16522: works very similar to store/cstore, but all data is stored in a
16523: temporary location and can be reset using tmpreset, $storehash should
16524: be a hash reference, returns nothing on success
16525:
16526: =item *
16527:
16528: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
16529: similar to restore, but all data is stored in a temporary location and
16530: can be reset using tmpreset. Returns a hash of values on success,
16531: error string otherwise.
16532:
16533: =item *
16534:
16535: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
16536: deltes all keys for $symb form the temporary storage hash.
16537:
16538: =item *
16539:
16540: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
16541: reference filled in from namesp ($udom and $uname are optional)
16542:
16543: =item *
16544:
16545: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
16546: namesp ($udom and $uname are optional)
16547:
16548: =item *
16549:
16550: dump($namespace,$udom,$uname,$regexp,$range) :
16551: dumps the complete (or key matching regexp) namespace into a hash
16552: ($udom, $uname, $regexp, $range are optional)
16553:
16554: $range should be either an integer '100' (give me the first 100
16555: matching records)
16556: or be two integers sperated by a - with no spaces
16557: '30-50' (give me the 30th through the 50th matching
16558: records)
16559: =item *
16560:
16561: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
16562: $store can be a scalar, an array reference, or if the amount to be
16563: incremented is > 1, a hash reference.
16564:
16565: ($udom and $uname are optional)
16566:
16567: =item *
16568:
16569: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
16570: ($udom and $uname are optional)
16571:
16572: =item *
16573:
16574: cput($namespace,$storehash,$udom,$uname) : critical put
16575: ($udom and $uname are optional)
16576:
16577: =item *
16578:
16579: newput($namespace,$storehash,$udom,$uname) :
16580:
16581: Attempts to store the items in the $storehash, but only if they don't
16582: currently exist, if this succeeds you can be certain that you have
16583: successfully created a new key value pair in the $namespace db.
16584:
16585:
16586: Args:
16587: $namespace: name of database to store values to
16588: $storehash: hashref to store to the db
16589: $udom: (optional) domain of user containing the db
16590: $uname: (optional) name of user caontaining the db
16591:
16592: Returns:
16593: 'ok' -> succeeded in storing all keys of $storehash
16594: 'key_exists: <key>' -> failed to anything out of $storehash, as at
16595: least <key> already existed in the db (other
16596: requested keys may also already exist)
16597: 'error: <msg>' -> unable to tie the DB or other error occurred
16598: 'con_lost' -> unable to contact request server
16599: 'refused' -> action was not allowed by remote machine
16600:
16601:
16602: =item *
16603:
16604: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
16605: reference filled in from namesp (encrypts the return communication)
16606: ($udom and $uname are optional)
16607:
16608: =item *
16609:
16610: log($udom,$name,$home,$message) : write to permanent log for user; use
16611: critical subroutine
16612:
16613: =item *
16614:
16615: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
16616: array reference filled in from namespace found in domain level on either
16617: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
16618:
16619: =item *
16620:
16621: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
16622: domain level either on specified domain server ($uhome) or primary domain
16623: server ($udom and $uhome are optional)
16624:
16625: =item *
16626:
16627: get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults
16628: for: authentication, language, quotas, timezone, date locale, and portal URL in
16629: the target domain.
16630:
16631: May also include additional key => value pairs for the following groups:
16632:
16633: =over
16634:
16635: =item
16636: disk quotas (MB allocated by default to portfolios and authoring spaces).
16637:
16638: =over
16639:
16640: =item defaultquota, authorquota
16641:
16642: =back
16643:
16644: =item
16645: tools (availability of aboutme page, blog, webDAV access for authoring spaces,
16646: portfolio for users).
16647:
16648: =over
16649:
16650: =item
16651: aboutme, blog, webdav, portfolio
16652:
16653: =back
16654:
16655: =item
16656: requestcourses: ability to request courses, and how requests are processed.
16657:
16658: =over
16659:
16660: =item
16661: official, unofficial, community, textbook, placement
16662:
16663: =back
16664:
16665: =item
16666: inststatus: types of institutional affiliation, and order in which they are displayed.
16667:
16668: =over
16669:
16670: =item
16671: inststatustypes, inststatusorder, inststatusguest
16672:
16673: =back
16674:
16675: =item
16676: coursedefaults: can PDF forms can be created, default credits for courses, default quotas (MB)
16677: for course's uploaded content.
16678:
16679: =over
16680:
16681: =item
16682: canuse_pdfforms, officialcredits, unofficialcredits, textbookcredits, officialquota, unofficialquota,
16683: communityquota, textbookquota, placementquota
16684:
16685: =back
16686:
16687: =item
16688: usersessions: set options for hosting of your users in other domains, and hosting of users from other domains
16689: on your servers.
16690:
16691: =over
16692:
16693: =item
16694: remotesessions, hostedsessions
16695:
16696: =back
16697:
16698: =back
16699:
16700: In cases where a domain coordinator has never used the "Set Domain Configuration"
16701: utility to create a configuration.db file on a domain's primary library server
16702: only the following domain defaults: auth_def, auth_arg_def, lang_def
16703: -- corresponding values are authentication type (internal, krb4, krb5,
16704: or localauth), initial password or a kerberos realm, language (e.g., en-us) --
16705: will be available. Values are retrieved from cache (if current), unless the
16706: optional $ignore_cache arg is true, or from domain's configuration.db (if available),
16707: or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab.
16708:
16709: Typical usage:
16710:
16711: %domdefaults = &get_domain_defaults($target_domain);
16712:
16713: =back
16714:
16715: =head2 Network Status Functions
16716:
16717: =over 4
16718:
16719: =item *
16720:
16721: dirlist() : return directory list based on URI (first arg).
16722:
16723: Inputs: 1 required, 5 optional.
16724:
16725: =over
16726:
16727: =item
16728: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
16729:
16730: =item
16731: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
16732:
16733: =item
16734: $username - username of user/course to be listed. Extracted from $uri if absent.
16735:
16736: =item
16737: $getpropath - boolean: 1 if prepend path using &propath().
16738:
16739: =item
16740: $getuserdir - boolean: 1 if prepend path for "userfiles".
16741:
16742: =item
16743: $alternateRoot - path to prepend in place of path from $uri.
16744:
16745: =back
16746:
16747: Returns: Array of up to two items.
16748:
16749: =over
16750:
16751: a reference to an array of files/subdirectories
16752:
16753: =over
16754:
16755: Each element in the array of files/subdirectories is a & separated list of
16756: item name and the result of running stat on the item. If dirlist was requested
16757: for a file instead of a directory, the item name will be ''. For a directory
16758: listing, if the item is a metadata file, the element will end &N&M
16759: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
16760: default copyright set (1).
16761:
16762: =back
16763:
16764: a scalar containing error condition (if encountered).
16765:
16766: =over
16767:
16768: =item
16769: no_host (no homeserver identified for $username:$domain).
16770:
16771: =item
16772: no_such_host (server contacted for listing not identified as valid host).
16773:
16774: =item
16775: con_lost (connection to remote server failed).
16776:
16777: =item
16778: refused (invalid $username:$domain received on lond side).
16779:
16780: =item
16781: no_such_dir (directory at specified path on lond side does not exist).
16782:
16783: =item
16784: empty (directory at specified path on lond side is empty).
16785:
16786: =over
16787:
16788: This is currently not encountered because the &ls3, &ls2,
16789: &ls (_handler) routines on the lond side do not filter out
16790: . and .. from a directory listing.
16791:
16792: =back
16793:
16794: =back
16795:
16796: =back
16797:
16798: =item *
16799:
16800: spareserver() : find server with least workload from spare.tab
16801:
16802:
16803: =item *
16804:
16805: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
16806: if there is no corresponding loncapa host.
16807:
16808: =back
16809:
16810:
16811: =head2 Apache Request
16812:
16813: =over 4
16814:
16815: =item *
16816:
16817: ssi($url,%hash) : server side include, does a complete request cycle on url to
16818: localhost, posts hash
16819:
16820: =back
16821:
16822: =head2 Data to String to Data
16823:
16824: =over 4
16825:
16826: =item *
16827:
16828: hash2str(%hash) : convert a hash into a string complete with escaping and '='
16829: and '&' separators, supports elements that are arrayrefs and hashrefs
16830:
16831: =item *
16832:
16833: hashref2str($hashref) : convert a hashref into a string complete with
16834: escaping and '=' and '&' separators, supports elements that are
16835: arrayrefs and hashrefs
16836:
16837: =item *
16838:
16839: arrayref2str($arrayref) : convert an arrayref into a string complete
16840: with escaping and '&' separators, supports elements that are arrayrefs
16841: and hashrefs
16842:
16843: =item *
16844:
16845: str2hash($string) : convert string to hash using unescaping and
16846: splitting on '=' and '&', supports elements that are arrayrefs and
16847: hashrefs
16848:
16849: =item *
16850:
16851: str2array($string) : convert string to hash using unescaping and
16852: splitting on '&', supports elements that are arrayrefs and hashrefs
16853:
16854: =back
16855:
16856: =head2 Logging Routines
16857:
16858:
16859: These routines allow one to make log messages in the lonnet.log and
16860: lonnet.perm logfiles.
16861:
16862: =over 4
16863:
16864: =item *
16865:
16866: logtouch() : make sure the logfile, lonnet.log, exists
16867:
16868: =item *
16869:
16870: logthis() : append message to the normal lonnet.log file, it gets
16871: preiodically rolled over and deleted.
16872:
16873: =item *
16874:
16875: logperm() : append a permanent message to lonnet.perm.log, this log
16876: file never gets deleted by any automated portion of the system, only
16877: messages of critical importance should go in here.
16878:
16879:
16880: =back
16881:
16882: =head2 General File Helper Routines
16883:
16884: =over 4
16885:
16886: =item *
16887:
16888: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
16889: (a) files in /uploaded
16890: (i) If a local copy of the file exists -
16891: compares modification date of local copy with last-modified date for
16892: definitive version stored on home server for course. If local copy is
16893: stale, requests a new version from the home server and stores it.
16894: If the original has been removed from the home server, then local copy
16895: is unlinked.
16896: (ii) If local copy does not exist -
16897: requests the file from the home server and stores it.
16898:
16899: If $caller is 'uploadrep':
16900: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
16901: for request for files originally uploaded via DOCS.
16902: - returns 'ok' if fresh local copy now available, -1 otherwise.
16903:
16904: Otherwise:
16905: This indicates a call from the content generation phase of the request.
16906: - returns the entire contents of the file or -1.
16907:
16908: (b) files in /res
16909: - returns the entire contents of a file or -1;
16910: it properly subscribes to and replicates the file if neccessary.
16911:
16912:
16913: =item *
16914:
16915: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
16916: reference
16917:
16918: returns either a stat() list of data about the file or an empty list
16919: if the file doesn't exist or couldn't find out about it (connection
16920: problems or user unknown)
16921:
16922: =item *
16923:
16924: filelocation($dir,$file) : returns file system location of a file
16925: based on URI; meant to be "fairly clean" absolute reference, $dir is a
16926: directory that relative $file lookups are to looked in ($dir of /a/dir
16927: and a file of ../bob will become /a/bob)
16928:
16929: =item *
16930:
16931: hreflocation($dir,$file) : returns file system location or a URL; same as
16932: filelocation except for hrefs
16933:
16934: =item *
16935:
16936: declutter() : declutters URLs -- remove beginning slashes, 'res' etc.
16937: also removes beginning /home/httpd/html unless /priv/ follows it.
16938:
16939: =back
16940:
16941: =head2 Usererfile file routines (/uploaded*)
16942:
16943: =over 4
16944:
16945: =item *
16946:
16947: userfileupload(): main rotine for putting a file in a user or course's
16948: filespace, arguments are,
16949:
16950: formname - required - this is the name of the element in $env where the
16951: filename, and the contents of the file to create/modifed exist
16952: the filename is in $env{'form.'.$formname.'.filename'} and the
16953: contents of the file is located in $env{'form.'.$formname}
16954: context - if coursedoc, store the file in the course of the active role
16955: of the current user;
16956: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
16957: if 'canceloverwrite': delete file in tmp/overwrites directory
16958: subdir - required - subdirectory to put the file in under ../userfiles/
16959: if undefined, it will be placed in "unknown"
16960:
16961: (This routine calls clean_filename() to remove any dangerous
16962: characters from the filename, and then calls finuserfileupload() to
16963: complete the transaction)
16964:
16965: returns either the url of the uploaded file (/uploaded/....) if successful
16966: and /adm/notfound.html if unsuccessful
16967:
16968: =item *
16969:
16970: clean_filename(): routine for cleaing a filename up for storage in
16971: userfile space, argument is:
16972:
16973: filename - proposed filename
16974:
16975: returns: the new clean filename
16976:
16977: =item *
16978:
16979: finishuserfileupload(): routine that creates and sends the file to
16980: userspace, probably shouldn't be called directly
16981:
16982: docuname: username or courseid of destination for the file
16983: docudom: domain of user/course of destination for the file
16984: formname: same as for userfileupload()
16985: fname: filename (including subdirectories) for the file
16986: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
16987: if hashref, and context is scantron, will convert csv format to standard format
16988: allfiles: reference to hash used to store objects found by parser
16989: codebase: reference to hash used for codebases of java objects found by parser
16990: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
16991: thumbheight: height (pixels) of thumbnail to be created for uploaded image
16992: resizewidth: width to be used to resize image using resizeImage from ImageMagick
16993: resizeheight: height to be used to resize image using resizeImage from ImageMagick
16994: context: if 'overwrite', will move the uploaded file from its temporary location to
16995: userfiles to facilitate overwriting a previously uploaded file with same name.
16996: mimetype: reference to scalar to accommodate mime type determined
16997: from File::MMagic if $parser = parse.
16998:
16999: returns either the url of the uploaded file (/uploaded/....) if successful
17000: and /adm/notfound.html if unsuccessful (or an error message if context
17001: was 'overwrite').
17002:
17003:
17004: =item *
17005:
17006: renameuserfile(): renames an existing userfile to a new name
17007:
17008: Args:
17009: docuname: username or courseid of destination for the file
17010: docudom: domain of user/course of destination for the file
17011: old: current file name (including any subdirs under userfiles)
17012: new: desired file name (including any subdirs under userfiles)
17013:
17014: =item *
17015:
17016: mkdiruserfile(): creates a directory is a userfiles dir
17017:
17018: Args:
17019: docuname: username or courseid of destination for the file
17020: docudom: domain of user/course of destination for the file
17021: dir: dir to create (including any subdirs under userfiles)
17022:
17023: =item *
17024:
17025: removeuserfile(): removes a file that exists in userfiles
17026:
17027: Args:
17028: docuname: username or courseid of destination for the file
17029: docudom: domain of user/course of destination for the file
17030: fname: filname to delete (including any subdirs under userfiles)
17031:
17032: =item *
17033:
17034: removeuploadedurl(): convience function for removeuserfile()
17035:
17036: Args:
17037: url: a full /uploaded/... url to delete
17038:
17039: =item *
17040:
17041: get_portfile_permissions():
17042: Args:
17043: domain: domain of user or course contain the portfolio files
17044: user: name of user or num of course contain the portfolio files
17045: Returns:
17046: hashref of a dump of the proper file_permissions.db
17047:
17048:
17049: =item *
17050:
17051: get_access_controls():
17052:
17053: Args:
17054: current_permissions: the hash ref returned from get_portfile_permissions()
17055: group: (optional) the group you want the files associated with
17056: file: (optional) the file you want access info on
17057:
17058: Returns:
17059: a hash (keys are file names) of hashes containing
17060: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
17061: values are XML containing access control settings (see below)
17062:
17063: Internal notes:
17064:
17065: access controls are stored in file_permissions.db as key=value pairs.
17066: key -> path to file/file_name\0uniqueID:scope_end_start
17067: where scope -> public,guest,course,group,domains or users.
17068: end -> UNIX time for end of access (0 -> no end date)
17069: start -> UNIX time for start of access
17070:
17071: value -> XML description of access control
17072: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
17073: <start></start>
17074: <end></end>
17075:
17076: <password></password> for scope type = guest
17077:
17078: <domain></domain> for scope type = course or group
17079: <number></number>
17080: <roles id="">
17081: <role></role>
17082: <access></access>
17083: <section></section>
17084: <group></group>
17085: </roles>
17086:
17087: <dom></dom> for scope type = domains
17088:
17089: <users> for scope type = users
17090: <user>
17091: <uname></uname>
17092: <udom></udom>
17093: </user>
17094: </users>
17095: </scope>
17096:
17097: Access data is also aggregated for each file in an additional key=value pair:
17098: key -> path to file/file_name\0accesscontrol
17099: value -> reference to hash
17100: hash contains key = value pairs
17101: where key = uniqueID:scope_end_start
17102: value = UNIX time record was last updated
17103:
17104: Used to improve speed of look-ups of access controls for each file.
17105:
17106: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
17107:
17108: =item *
17109:
17110: modify_access_controls():
17111:
17112: Modifies access controls for a portfolio file
17113: Args
17114: 1. file name
17115: 2. reference to hash of required changes,
17116: 3. domain
17117: 4. username
17118: where domain,username are the domain of the portfolio owner
17119: (either a user or a course)
17120:
17121: Returns:
17122: 1. result of additions or updates ('ok' or 'error', with error message).
17123: 2. result of deletions ('ok' or 'error', with error message).
17124: 3. reference to hash of any new or updated access controls.
17125: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
17126: key = integer (inbound ID)
17127: value = uniqueID
17128:
17129: =item *
17130:
17131: get_timebased_id():
17132:
17133: Attempts to get a unique timestamp-based suffix for use with items added to a
17134: course via the Course Editor (e.g., folders, composite pages,
17135: group bulletin boards).
17136:
17137: Args: (first three required; six others optional)
17138:
17139: 1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
17140: docssequence, or name of group
17141:
17142: 2. keyid (alphanumeric): name of temporary locking key in hash,
17143: e.g., num, boardids
17144:
17145: 3. namespace: name of gdbm file used to store suffixes already assigned;
17146: file will be named nohist_namespace.db
17147:
17148: 4. cdom: domain of course; default is current course domain from %env
17149:
17150: 5. cnum: course number; default is current course number from %env
17151:
17152: 6. idtype: set to concat if an additional digit is to be appended to the
17153: unix timestamp to form the suffix, if the plain timestamp is already
17154: in use. Default is to not do this, but simply increment the unix
17155: timestamp by 1 until a unique key is obtained.
17156:
17157: 7. who: holder of locking key; defaults to user:domain for user.
17158:
17159: 8. locktries: number of attempts to obtain a lock (sleep of 1s before
17160: retrying); default is 3.
17161:
17162: 9. maxtries: number of attempts to obtain a unique suffix; default is 20.
17163:
17164: Returns:
17165:
17166: 1. suffix obtained (numeric)
17167:
17168: 2. result of deleting locking key (ok if deleted, or lock never obtained)
17169:
17170: 3. error: contains (localized) error message if an error occurred.
17171:
17172:
17173: =back
17174:
17175: =head2 HTTP Helper Routines
17176:
17177: =over 4
17178:
17179: =item *
17180:
17181: escape() : unpack non-word characters into CGI-compatible hex codes
17182:
17183: =item *
17184:
17185: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
17186:
17187: =back
17188:
17189: =head1 PRIVATE SUBROUTINES
17190:
17191: =head2 Underlying communication routines (Shouldn't call)
17192:
17193: =over 4
17194:
17195: =item *
17196:
17197: subreply() : tries to pass a message to lonc, returns con_lost if incapable
17198:
17199: =item *
17200:
17201: reply() : uses subreply to send a message to remote machine, logs all failures
17202:
17203: =item *
17204:
17205: critical() : passes a critical message to another server; if cannot
17206: get through then place message in connection buffer directory and
17207: returns con_delayed, if incapable of saving message, returns
17208: con_failed
17209:
17210: =item *
17211:
17212: reconlonc() : tries to reconnect lonc client processes.
17213:
17214: =back
17215:
17216: =head2 Resource Access Logging
17217:
17218: =over 4
17219:
17220: =item *
17221:
17222: flushcourselogs() : flush (save) buffer logs and access logs
17223:
17224: =item *
17225:
17226: courselog($what) : save message for course in hash
17227:
17228: =item *
17229:
17230: courseacclog($what) : save message for course using &courselog(). Perform
17231: special processing for specific resource types (problems, exams, quizzes, etc).
17232:
17233: =item *
17234:
17235: goodbye() : flush course logs and log shutting down; it is called in srm.conf
17236: as a PerlChildExitHandler
17237:
17238: =back
17239:
17240: =head2 Other
17241:
17242: =over 4
17243:
17244: =item *
17245:
17246: symblist($mapname,%newhash) : update symbolic storage links
17247:
17248: =back
17249:
17250: =cut
17251:
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