1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1421 2020/05/13 01:58:16 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: =pod
31:
32: =head1 NAME
33:
34: Apache::lonnet.pm
35:
36: =head1 SYNOPSIS
37:
38: This file is an interface to the lonc processes of
39: the LON-CAPA network as well as set of elaborated functions for handling information
40: necessary for navigating through a given cluster of LON-CAPA machines within a
41: domain. There are over 40 specialized functions in this module which handle the
42: reading and transmission of metadata, user information (ids, names, environments, roles,
43: logs), file information (storage, reading, directories, extensions, replication, embedded
44: styles and descriptors), educational resources (course descriptions, section names and
45: numbers), url hashing (to assign roles on a url basis), and translating abbreviated symbols to
46: and from more descriptive phrases or explanations.
47:
48: This is part of the LearningOnline Network with CAPA project
49: described at http://www.lon-capa.org.
50:
51: =head1 Package Variables
52:
53: These are largely undocumented, so if you decipher one please note it here.
54:
55: =over 4
56:
57: =item $processmarker
58:
59: Contains the time this process was started and this servers host id.
60:
61: =item $dumpcount
62:
63: Counts the number of times a message log flush has been attempted (regardless
64: of success) by this process. Used as part of the filename when messages are
65: delayed.
66:
67: =back
68:
69: =cut
70:
71: package Apache::lonnet;
72:
73: use strict;
74: use HTTP::Date;
75: use Image::Magick;
76: use CGI::Cookie;
77:
78: use Encode;
79:
80: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir $deftex
81: $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease
82: %managerstab $passwdmin);
83:
84: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
85: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
86: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
87: %courseownerbuf, %coursetypebuf,$locknum);
88:
89: use IO::Socket;
90: use GDBM_File;
91: use HTML::LCParser;
92: use Fcntl qw(:flock);
93: use Storable qw(thaw nfreeze);
94: use Time::HiRes qw( sleep gettimeofday tv_interval );
95: use Cache::Memcached;
96: use Digest::MD5;
97: use Math::Random;
98: use File::MMagic;
99: use LONCAPA qw(:DEFAULT :match);
100: use LONCAPA::Configuration;
101: use LONCAPA::lonmetadata;
102: use LONCAPA::Lond;
103: use LONCAPA::LWPReq;
104: use LONCAPA::transliterate;
105:
106: use File::Copy;
107:
108: my $readit;
109: my $max_connection_retries = 20; # Or some such value.
110:
111: require Exporter;
112:
113: our @ISA = qw (Exporter);
114: our @EXPORT = qw(%env);
115:
116:
117: # ------------------------------------ Logging (parameters, docs, slots, roles)
118: {
119: my $logid;
120: sub write_log {
121: my ($context,$hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
122: if ($context eq 'course') {
123: if (($cnum eq '') || ($cdom eq '')) {
124: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
125: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
126: }
127: }
128: $logid ++;
129: my $now = time();
130: my $id=$now.'00000'.$$.'00000'.$logid;
131: my $logentry = {
132: $id => {
133: 'exe_uname' => $env{'user.name'},
134: 'exe_udom' => $env{'user.domain'},
135: 'exe_time' => $now,
136: 'exe_ip' => $ENV{'REMOTE_ADDR'},
137: 'delflag' => $delflag,
138: 'logentry' => $storehash,
139: 'uname' => $uname,
140: 'udom' => $udom,
141: }
142: };
143: return &put('nohist_'.$hash_name,$logentry,$cdom,$cnum);
144: }
145: }
146:
147: sub logtouch {
148: my $execdir=$perlvar{'lonDaemons'};
149: unless (-e "$execdir/logs/lonnet.log") {
150: open(my $fh,">>","$execdir/logs/lonnet.log");
151: close $fh;
152: }
153: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
154: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
155: }
156:
157: sub logthis {
158: my $message=shift;
159: my $execdir=$perlvar{'lonDaemons'};
160: my $now=time;
161: my $local=localtime($now);
162: if (open(my $fh,">>","$execdir/logs/lonnet.log")) {
163: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
164: print $fh $logstring;
165: close($fh);
166: }
167: return 1;
168: }
169:
170: sub logperm {
171: my $message=shift;
172: my $execdir=$perlvar{'lonDaemons'};
173: my $now=time;
174: my $local=localtime($now);
175: if (open(my $fh,">>","$execdir/logs/lonnet.perm.log")) {
176: print $fh "$now:$message:$local\n";
177: close($fh);
178: }
179: return 1;
180: }
181:
182: sub create_connection {
183: my ($hostname,$lonid) = @_;
184: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
185: Type => SOCK_STREAM,
186: Timeout => 10);
187: return 0 if (!$client);
188: print $client (join(':',$hostname,$lonid,&machine_ids($hostname),$loncaparevs{$lonid})."\n");
189: my $result = <$client>;
190: chomp($result);
191: return 1 if ($result eq 'done');
192: return 0;
193: }
194:
195: sub get_server_timezone {
196: my ($cnum,$cdom) = @_;
197: my $home=&homeserver($cnum,$cdom);
198: if ($home ne 'no_host') {
199: my $cachetime = 24*3600;
200: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
201: if (defined($cached)) {
202: return $timezone;
203: } else {
204: my $timezone = &reply('servertimezone',$home);
205: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
206: }
207: }
208: }
209:
210: sub get_server_distarch {
211: my ($lonhost,$ignore_cache) = @_;
212: if (defined($lonhost)) {
213: if (!defined(&hostname($lonhost))) {
214: return;
215: }
216: my $cachetime = 12*3600;
217: if (!$ignore_cache) {
218: my ($distarch,$cached)=&is_cached_new('serverdistarch',$lonhost);
219: if (defined($cached)) {
220: return $distarch;
221: }
222: }
223: my $rep = &reply('serverdistarch',$lonhost);
224: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
225: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
226: $rep eq '') {
227: return &do_cache_new('serverdistarch',$lonhost,$rep,$cachetime);
228: }
229: }
230: return;
231: }
232:
233: sub get_servercerts_info {
234: my ($lonhost,$hostname,$context) = @_;
235: return if ($lonhost eq '');
236: if ($hostname eq '') {
237: $hostname = &hostname($lonhost);
238: }
239: return if ($hostname eq '');
240: my ($rep,$uselocal);
241: if ($context eq 'install') {
242: $uselocal = 1;
243: } elsif (grep { $_ eq $lonhost } ¤t_machine_ids()) {
244: $uselocal = 1;
245: }
246: if (($context ne 'cgi') && ($context ne 'install') && ($uselocal)) {
247: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
248: if ($distro eq '') {
249: $uselocal = 0;
250: } elsif ($distro =~ /^(?:centos|redhat|scientific)(\d+)$/) {
251: if ($1 < 6) {
252: $uselocal = 0;
253: }
254: } elsif ($distro =~ /^(?:sles)(\d+)$/) {
255: if ($1 < 12) {
256: $uselocal = 0;
257: }
258: }
259: }
260: if ($uselocal) {
261: $rep = LONCAPA::Lond::server_certs(\%perlvar,$lonhost,$hostname);
262: } else {
263: $rep=&reply('servercerts',$lonhost);
264: }
265: my ($result,%returnhash);
266: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
267: ($rep eq 'unknown_cmd')) {
268: $result = $rep;
269: } else {
270: $result = 'ok';
271: my @pairs=split(/\&/,$rep);
272: foreach my $item (@pairs) {
273: my ($key,$value)=split(/=/,$item,2);
274: my $what = &unescape($key);
275: $returnhash{$what}=&thaw_unescape($value);
276: }
277: }
278: return ($result,\%returnhash);
279: }
280:
281: sub get_server_loncaparev {
282: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
283: if (defined($lonhost)) {
284: if (!defined(&hostname($lonhost))) {
285: undef($lonhost);
286: }
287: }
288: if (!defined($lonhost)) {
289: if (defined(&domain($dom,'primary'))) {
290: $lonhost=&domain($dom,'primary');
291: if ($lonhost eq 'no_host') {
292: undef($lonhost);
293: }
294: }
295: }
296: if (defined($lonhost)) {
297: my $cachetime = 12*3600;
298: if (!$ignore_cache) {
299: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
300: if (defined($cached)) {
301: return $loncaparev;
302: }
303: }
304: my ($answer,$loncaparev);
305: my @ids=¤t_machine_ids();
306: if (grep(/^\Q$lonhost\E$/,@ids)) {
307: $answer = $perlvar{'lonVersion'};
308: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
309: $loncaparev = $1;
310: }
311: } else {
312: $answer = &reply('serverloncaparev',$lonhost);
313: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
314: if ($caller eq 'loncron') {
315: my $hostname = &hostname($lonhost);
316: my $protocol = $protocol{$lonhost};
317: $protocol = 'http' if ($protocol ne 'https');
318: my $url = $protocol.'://'.$hostname.'/adm/about.html';
319: my $request=new HTTP::Request('GET',$url);
320: my $response=&LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,4,1);
321: unless ($response->is_error()) {
322: my $content = $response->content;
323: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
324: $loncaparev = $1;
325: }
326: }
327: } else {
328: $loncaparev = $loncaparevs{$lonhost};
329: }
330: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
331: $loncaparev = $1;
332: }
333: }
334: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
335: }
336: }
337:
338: sub get_server_homeID {
339: my ($hostname,$ignore_cache,$caller) = @_;
340: unless ($ignore_cache) {
341: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
342: if (defined($cached)) {
343: return $serverhomeID;
344: }
345: }
346: my $cachetime = 12*3600;
347: my $serverhomeID;
348: if ($caller eq 'loncron') {
349: my @machine_ids = &machine_ids($hostname);
350: foreach my $id (@machine_ids) {
351: my $response = &reply('serverhomeID',$id);
352: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
353: $serverhomeID = $response;
354: last;
355: }
356: }
357: if ($serverhomeID eq '') {
358: $serverhomeID = $machine_ids[-1];
359: }
360: } else {
361: $serverhomeID = $serverhomeIDs{$hostname};
362: }
363: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
364: }
365:
366: sub get_remote_globals {
367: my ($lonhost,$whathash,$ignore_cache) = @_;
368: my ($result,%returnhash,%whatneeded);
369: if (ref($whathash) eq 'HASH') {
370: foreach my $what (sort(keys(%{$whathash}))) {
371: my $hashid = $lonhost.'-'.$what;
372: my ($response,$cached);
373: unless ($ignore_cache) {
374: ($response,$cached)=&is_cached_new('lonnetglobal',$hashid);
375: }
376: if (defined($cached)) {
377: $returnhash{$what} = $response;
378: } else {
379: $whatneeded{$what} = 1;
380: }
381: }
382: if (keys(%whatneeded) == 0) {
383: $result = 'ok';
384: } else {
385: my $requested = &freeze_escape(\%whatneeded);
386: my $rep=&reply('readlonnetglobal:'.$requested,$lonhost);
387: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
388: ($rep eq 'unknown_cmd')) {
389: $result = $rep;
390: } else {
391: $result = 'ok';
392: my @pairs=split(/\&/,$rep);
393: foreach my $item (@pairs) {
394: my ($key,$value)=split(/=/,$item,2);
395: my $what = &unescape($key);
396: my $hashid = $lonhost.'-'.$what;
397: $returnhash{$what}=&thaw_unescape($value);
398: &do_cache_new('lonnetglobal',$hashid,$returnhash{$what},600);
399: }
400: }
401: }
402: }
403: return ($result,\%returnhash);
404: }
405:
406: sub remote_devalidate_cache {
407: my ($lonhost,$cachekeys) = @_;
408: my $items;
409: return unless (ref($cachekeys) eq 'ARRAY');
410: my $cachestr = join('&',@{$cachekeys});
411: my $response = &reply('devalidatecache:'.&escape($cachestr),$lonhost);
412: return $response;
413: }
414:
415: # -------------------------------------------------- Non-critical communication
416: sub subreply {
417: my ($cmd,$server)=@_;
418: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
419: #
420: # With loncnew process trimming, there's a timing hole between lonc server
421: # process exit and the master server picking up the listen on the AF_UNIX
422: # socket. In that time interval, a lock file will exist:
423:
424: my $lockfile=$peerfile.".lock";
425: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
426: sleep(0.1);
427: }
428: # At this point, either a loncnew parent is listening or an old lonc
429: # or loncnew child is listening so we can connect or everything's dead.
430: #
431: # We'll give the connection a few tries before abandoning it. If
432: # connection is not possible, we'll con_lost back to the client.
433: #
434: my $client;
435: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
436: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
437: Type => SOCK_STREAM,
438: Timeout => 10);
439: if ($client) {
440: last; # Connected!
441: } else {
442: &create_connection(&hostname($server),$server);
443: }
444: sleep(0.1); # Try again later if failed connection.
445: }
446: my $answer;
447: if ($client) {
448: print $client "sethost:$server:$cmd\n";
449: $answer=<$client>;
450: if (!$answer) { $answer="con_lost"; }
451: chomp($answer);
452: } else {
453: $answer = 'con_lost'; # Failed connection.
454: }
455: return $answer;
456: }
457:
458: sub reply {
459: my ($cmd,$server)=@_;
460: unless (defined(&hostname($server))) { return 'no_such_host'; }
461: my $answer=subreply($cmd,$server);
462: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
463: my $logged = $cmd;
464: if ($cmd =~ /^encrypt:([^:]+):/) {
465: my $subcmd = $1;
466: if (($subcmd eq 'auth') || ($subcmd eq 'passwd') ||
467: ($subcmd eq 'changeuserauth') || ($subcmd eq 'makeuser') ||
468: ($subcmd eq 'putdom') || ($subcmd eq 'autoexportgrades')) {
469: (undef,undef,my @rest) = split(/:/,$cmd);
470: if (($subcmd eq 'auth') || ($subcmd eq 'putdom')) {
471: splice(@rest,2,1,'Hidden');
472: } elsif ($subcmd eq 'passwd') {
473: splice(@rest,2,2,('Hidden','Hidden'));
474: } elsif (($subcmd eq 'changeuserauth') || ($subcmd eq 'makeuser') ||
475: ($subcmd eq 'autoexportgrades')) {
476: splice(@rest,3,1,'Hidden');
477: }
478: $logged = join(':',('encrypt:'.$subcmd,@rest));
479: }
480: }
481: &logthis("<font color=\"blue\">WARNING:".
482: " $logged to $server returned $answer</font>");
483: }
484: return $answer;
485: }
486:
487: # ----------------------------------------------------------- Send USR1 to lonc
488:
489: sub reconlonc {
490: my ($lonid) = @_;
491: if ($lonid) {
492: my $hostname = &hostname($lonid);
493: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
494: if ($hostname && -e $peerfile) {
495: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
496: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
497: Type => SOCK_STREAM,
498: Timeout => 10);
499: if ($client) {
500: print $client ("reset_retries\n");
501: my $answer=<$client>;
502: #reset just this one.
503: }
504: }
505: return;
506: }
507:
508: &logthis("Trying to reconnect lonc");
509: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
510: if (open(my $fh,"<",$loncfile)) {
511: my $loncpid=<$fh>;
512: chomp($loncpid);
513: if (kill 0 => $loncpid) {
514: &logthis("lonc at pid $loncpid responding, sending USR1");
515: kill USR1 => $loncpid;
516: sleep 1;
517: } else {
518: &logthis(
519: "<font color=\"blue\">WARNING:".
520: " lonc at pid $loncpid not responding, giving up</font>");
521: }
522: } else {
523: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
524: }
525: }
526:
527: # ------------------------------------------------------ Critical communication
528:
529: sub critical {
530: my ($cmd,$server)=@_;
531: unless (&hostname($server)) {
532: &logthis("<font color=\"blue\">WARNING:".
533: " Critical message to unknown server ($server)</font>");
534: return 'no_such_host';
535: }
536: my $answer=reply($cmd,$server);
537: if ($answer eq 'con_lost') {
538: &reconlonc($server);
539: my $answer=reply($cmd,$server);
540: if ($answer eq 'con_lost') {
541: my $now=time;
542: my $middlename=$cmd;
543: $middlename=substr($middlename,0,16);
544: $middlename=~s/\W//g;
545: my $dfilename=
546: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
547: $dumpcount++;
548: {
549: my $dfh;
550: if (open($dfh,">",$dfilename)) {
551: print $dfh "$cmd\n";
552: close($dfh);
553: }
554: }
555: sleep 1;
556: my $wcmd='';
557: {
558: my $dfh;
559: if (open($dfh,"<",$dfilename)) {
560: $wcmd=<$dfh>;
561: close($dfh);
562: }
563: }
564: chomp($wcmd);
565: if ($wcmd eq $cmd) {
566: &logthis("<font color=\"blue\">WARNING: ".
567: "Connection buffer $dfilename: $cmd</font>");
568: &logperm("D:$server:$cmd");
569: return 'con_delayed';
570: } else {
571: &logthis("<font color=\"red\">CRITICAL:"
572: ." Critical connection failed: $server $cmd</font>");
573: &logperm("F:$server:$cmd");
574: return 'con_failed';
575: }
576: }
577: }
578: return $answer;
579: }
580:
581: # ------------------------------------------- check if return value is an error
582:
583: sub error {
584: my ($result) = @_;
585: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
586: if ($2 == 2) { return undef; }
587: return $1;
588: }
589: return undef;
590: }
591:
592: sub convert_and_load_session_env {
593: my ($lonidsdir,$handle)=@_;
594: my @profile;
595: {
596: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
597: if (!$opened) {
598: return 0;
599: }
600: flock($idf,LOCK_SH);
601: @profile=<$idf>;
602: close($idf);
603: }
604: my %temp_env;
605: foreach my $line (@profile) {
606: if ($line !~ m/=/) {
607: return 0;
608: }
609: chomp($line);
610: my ($envname,$envvalue)=split(/=/,$line,2);
611: $temp_env{&unescape($envname)} = &unescape($envvalue);
612: }
613: unlink("$lonidsdir/$handle.id");
614: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
615: 0640)) {
616: %disk_env = %temp_env;
617: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
618: untie(%disk_env);
619: }
620: return 1;
621: }
622:
623: # ------------------------------------------- Transfer profile into environment
624: my $env_loaded;
625: sub transfer_profile_to_env {
626: my ($lonidsdir,$handle,$force_transfer) = @_;
627: if (!$force_transfer && $env_loaded) { return; }
628:
629: if (!defined($lonidsdir)) {
630: $lonidsdir = $perlvar{'lonIDsDir'};
631: }
632: if (!defined($handle)) {
633: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
634: }
635:
636: my $convert;
637: {
638: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
639: if (!$opened) {
640: return;
641: }
642: flock($idf,LOCK_SH);
643: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
644: &GDBM_READER(),0640)) {
645: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
646: untie(%disk_env);
647: } else {
648: $convert = 1;
649: }
650: }
651: if ($convert) {
652: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
653: &logthis("Failed to load session, or convert session.");
654: }
655: }
656:
657: my %remove;
658: while ( my $envname = each(%env) ) {
659: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
660: if ($time < time-300) {
661: $remove{$key}++;
662: }
663: }
664: }
665:
666: $env{'user.environment'} = "$lonidsdir/$handle.id";
667: $env_loaded=1;
668: foreach my $expired_key (keys(%remove)) {
669: &delenv($expired_key);
670: }
671: }
672:
673: # ---------------------------------------------------- Check for valid session
674: sub check_for_valid_session {
675: my ($r,$name,$userhashref,$domref) = @_;
676: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
677: my ($lonidsdir,$linkname,$pubname,$secure,$lonid);
678: if ($name eq 'lonDAV') {
679: $lonidsdir=$r->dir_config('lonDAVsessDir');
680: } else {
681: $lonidsdir=$r->dir_config('lonIDsDir');
682: if ($name eq '') {
683: $name = 'lonID';
684: }
685: }
686: if ($name eq 'lonID') {
687: $secure = 'lonSID';
688: $linkname = 'lonLinkID';
689: $pubname = 'lonPubID';
690: if (exists($cookies{$secure})) {
691: $lonid=$cookies{$secure};
692: } elsif (exists($cookies{$name})) {
693: $lonid=$cookies{$name};
694: } elsif ((exists($cookies{$linkname})) && ($ENV{'SERVER_PORT'} != 443)) {
695: $lonid=$cookies{$linkname};
696: } elsif (exists($cookies{$pubname})) {
697: $lonid=$cookies{$pubname};
698: }
699: } else {
700: $lonid=$cookies{$name};
701: }
702: return undef if (!$lonid);
703:
704: my $handle=&LONCAPA::clean_handle($lonid->value);
705: if (-l "$lonidsdir/$handle.id") {
706: my $link = readlink("$lonidsdir/$handle.id");
707: if ((-e $link) && ($link =~ m{^\Q$lonidsdir\E/(.+)\.id$})) {
708: $handle = $1;
709: }
710: }
711: if (!-e "$lonidsdir/$handle.id") {
712: if ((ref($domref)) && ($name eq 'lonID') &&
713: ($handle =~ /^($match_username)\_\d+\_($match_domain)\_(.+)$/)) {
714: my ($possuname,$possudom,$possuhome) = ($1,$2,$3);
715: if ((&domain($possudom) ne '') && (&homeserver($possuname,$possudom) eq $possuhome)) {
716: $$domref = $possudom;
717: }
718: }
719: return undef;
720: }
721:
722: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
723: return undef if (!$opened);
724:
725: flock($idf,LOCK_SH);
726: my %disk_env;
727: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
728: &GDBM_READER(),0640)) {
729: return undef;
730: }
731:
732: if (!defined($disk_env{'user.name'})
733: || !defined($disk_env{'user.domain'})) {
734: untie(%disk_env);
735: return undef;
736: }
737:
738: if (ref($userhashref) eq 'HASH') {
739: $userhashref->{'name'} = $disk_env{'user.name'};
740: $userhashref->{'domain'} = $disk_env{'user.domain'};
741: $userhashref->{'lti'} = $disk_env{'request.lti.login'};
742: if ($userhashref->{'lti'}) {
743: $userhashref->{'ltitarget'} = $disk_env{'request.lti.target'};
744: $userhashref->{'ltiuri'} = $disk_env{'request.lti.uri'};
745: }
746: }
747: untie(%disk_env);
748:
749: return $handle;
750: }
751:
752: sub timed_flock {
753: my ($file,$lock_type) = @_;
754: my $failed=0;
755: eval {
756: local $SIG{__DIE__}='DEFAULT';
757: local $SIG{ALRM}=sub {
758: $failed=1;
759: die("failed lock");
760: };
761: alarm(13);
762: flock($file,$lock_type);
763: alarm(0);
764: };
765: if ($failed) {
766: return undef;
767: } else {
768: return 1;
769: }
770: }
771:
772: sub get_sessionfile_vars {
773: my ($handle,$lonidsdir,$storearr) = @_;
774: my %returnhash;
775: unless (ref($storearr) eq 'ARRAY') {
776: return %returnhash;
777: }
778: if (-l "$lonidsdir/$handle.id") {
779: my $link = readlink("$lonidsdir/$handle.id");
780: if ((-e $link) && ($link =~ m{^\Q$lonidsdir\E/(.+)\.id$})) {
781: $handle = $1;
782: }
783: }
784: if ((-e "$lonidsdir/$handle.id") &&
785: ($handle =~ /^($match_username)\_\d+\_($match_domain)\_(.+)$/)) {
786: my ($possuname,$possudom,$possuhome) = ($1,$2,$3);
787: if ((&domain($possudom) ne '') && (&homeserver($possuname,$possudom) eq $possuhome)) {
788: if (open(my $idf,'+<',"$lonidsdir/$handle.id")) {
789: flock($idf,LOCK_SH);
790: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
791: &GDBM_READER(),0640)) {
792: foreach my $item (@{$storearr}) {
793: $returnhash{$item} = $disk_env{$item};
794: }
795: untie(%disk_env);
796: }
797: }
798: }
799: }
800: return %returnhash;
801: }
802:
803: # ---------------------------------------------------------- Append Environment
804:
805: sub appenv {
806: my ($newenv,$roles) = @_;
807: if (ref($newenv) eq 'HASH') {
808: foreach my $key (keys(%{$newenv})) {
809: my $refused = 0;
810: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
811: $refused = 1;
812: if (ref($roles) eq 'ARRAY') {
813: my ($type,$role) = ($key =~ m{^user\.(role|priv)\.(.+?)\./});
814: if (grep(/^\Q$role\E$/,@{$roles})) {
815: $refused = 0;
816: }
817: }
818: }
819: if ($refused) {
820: &logthis("<font color=\"blue\">WARNING: ".
821: "Attempt to modify environment ".$key." to ".$newenv->{$key}
822: .'</font>');
823: delete($newenv->{$key});
824: } else {
825: $env{$key}=$newenv->{$key};
826: }
827: }
828: my $lonids = $perlvar{'lonIDsDir'};
829: if ($env{'user.environment'} =~ m{^\Q$lonids/\E$match_username\_\d+\_$match_domain\_[\w\-.]+\.id$}) {
830: my $opened = open(my $env_file,'+<',$env{'user.environment'});
831: if ($opened
832: && &timed_flock($env_file,LOCK_EX)
833: &&
834: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
835: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
836: while (my ($key,$value) = each(%{$newenv})) {
837: $disk_env{$key} = $value;
838: }
839: untie(%disk_env);
840: }
841: }
842: }
843: return 'ok';
844: }
845: # ----------------------------------------------------- Delete from Environment
846:
847: sub delenv {
848: my ($delthis,$regexp,$roles) = @_;
849: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
850: my $refused = 1;
851: if (ref($roles) eq 'ARRAY') {
852: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
853: if (grep(/^\Q$role\E$/,@{$roles})) {
854: $refused = 0;
855: }
856: }
857: if ($refused) {
858: &logthis("<font color=\"blue\">WARNING: ".
859: "Attempt to delete from environment ".$delthis);
860: return 'error';
861: }
862: }
863: my $opened = open(my $env_file,'+<',$env{'user.environment'});
864: if ($opened
865: && &timed_flock($env_file,LOCK_EX)
866: &&
867: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
868: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
869: foreach my $key (keys(%disk_env)) {
870: if ($regexp) {
871: if ($key=~/^$delthis/) {
872: delete($env{$key});
873: delete($disk_env{$key});
874: }
875: } else {
876: if ($key=~/^\Q$delthis\E/) {
877: delete($env{$key});
878: delete($disk_env{$key});
879: }
880: }
881: }
882: untie(%disk_env);
883: }
884: return 'ok';
885: }
886:
887: sub get_env_multiple {
888: my ($name) = @_;
889: my @values;
890: if (defined($env{$name})) {
891: # exists is it an array
892: if (ref($env{$name})) {
893: @values=@{ $env{$name} };
894: } else {
895: $values[0]=$env{$name};
896: }
897: }
898: return(@values);
899: }
900:
901: # ------------------------------------------------------------------- Locking
902:
903: sub set_lock {
904: my ($text)=@_;
905: $locknum++;
906: my $id=$$.'-'.$locknum;
907: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
908: 'session.lock.'.$id => $text});
909: return $id;
910: }
911:
912: sub get_locks {
913: my $num=0;
914: my %texts=();
915: foreach my $lock (split(/\,/,$env{'session.locks'})) {
916: if ($lock=~/\w/) {
917: $num++;
918: $texts{$lock}=$env{'session.lock.'.$lock};
919: }
920: }
921: return ($num,%texts);
922: }
923:
924: sub remove_lock {
925: my ($id)=@_;
926: my $newlocks='';
927: foreach my $lock (split(/\,/,$env{'session.locks'})) {
928: if (($lock=~/\w/) && ($lock ne $id)) {
929: $newlocks.=','.$lock;
930: }
931: }
932: &appenv({'session.locks' => $newlocks});
933: &delenv('session.lock.'.$id);
934: }
935:
936: sub remove_all_locks {
937: my $activelocks=$env{'session.locks'};
938: foreach my $lock (split(/\,/,$env{'session.locks'})) {
939: if ($lock=~/\w/) {
940: &remove_lock($lock);
941: }
942: }
943: }
944:
945:
946: # ------------------------------------------ Find out current server userload
947: sub userload {
948: my $numusers=0;
949: {
950: opendir(LONIDS,$perlvar{'lonIDsDir'});
951: my $filename;
952: my $curtime=time;
953: while ($filename=readdir(LONIDS)) {
954: next if ($filename eq '.' || $filename eq '..');
955: next if ($filename =~ /publicuser_\d+\.id/);
956: next if ($filename =~ /^[a-f0-9]+_linked\.id$/);
957: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
958: if ($curtime-$mtime < 1800) { $numusers++; }
959: }
960: closedir(LONIDS);
961: }
962: my $userloadpercent=0;
963: my $maxuserload=$perlvar{'lonUserLoadLim'};
964: if ($maxuserload) {
965: $userloadpercent=100*$numusers/$maxuserload;
966: }
967: $userloadpercent=sprintf("%.2f",$userloadpercent);
968: return $userloadpercent;
969: }
970:
971: # ------------------------------ Find server with least workload from spare.tab
972:
973: sub spareserver {
974: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
975: my $spare_server;
976: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
977: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
978: : $userloadpercent;
979: my ($uint_dom,$remotesessions);
980: if (($udom ne '') && (&domain($udom) ne '')) {
981: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
982: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
983: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
984: $remotesessions = $udomdefaults{'remotesessions'};
985: }
986: my $spareshash = &this_host_spares($udom);
987: if (ref($spareshash) eq 'HASH') {
988: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
989: foreach my $try_server (@{ $spareshash->{'primary'} }) {
990: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
991: $try_server));
992: ($spare_server, $lowest_load) =
993: &compare_server_load($try_server, $spare_server, $lowest_load);
994: }
995: }
996:
997: my $found_server = ($spare_server ne '' && $lowest_load < 100);
998:
999: if (!$found_server) {
1000: if (ref($spareshash->{'default'}) eq 'ARRAY') {
1001: foreach my $try_server (@{ $spareshash->{'default'} }) {
1002: next unless (&spare_can_host($udom,$uint_dom,
1003: $remotesessions,$try_server));
1004: ($spare_server, $lowest_load) =
1005: &compare_server_load($try_server, $spare_server, $lowest_load);
1006: }
1007: }
1008: }
1009: }
1010:
1011: if (!$want_server_name) {
1012: if (defined($spare_server)) {
1013: my $hostname = &hostname($spare_server);
1014: if (defined($hostname)) {
1015: my $protocol = 'http';
1016: if ($protocol{$spare_server} eq 'https') {
1017: $protocol = $protocol{$spare_server};
1018: }
1019: $spare_server = $protocol.'://'.$hostname;
1020: }
1021: }
1022: }
1023: return $spare_server;
1024: }
1025:
1026: sub compare_server_load {
1027: my ($try_server, $spare_server, $lowest_load, $required) = @_;
1028:
1029: if ($required) {
1030: my ($reqdmajor,$reqdminor) = ($required =~ /^(\d+)\.(\d+)$/);
1031: my $remoterev = &get_server_loncaparev(undef,$try_server);
1032: my ($major,$minor) = ($remoterev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
1033: if (($major eq '' && $minor eq '') ||
1034: (($reqdmajor > $major) || (($reqdmajor == $major) && ($reqdminor > $minor)))) {
1035: return ($spare_server,$lowest_load);
1036: }
1037: }
1038:
1039: my $loadans = &reply('load', $try_server);
1040: my $userloadans = &reply('userload',$try_server);
1041:
1042: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
1043: return ($spare_server, $lowest_load); #didn't get a number from the server
1044: }
1045:
1046: my $load;
1047: if ($loadans =~ /\d/) {
1048: if ($userloadans =~ /\d/) {
1049: #both are numbers, pick the bigger one
1050: $load = ($loadans > $userloadans) ? $loadans
1051: : $userloadans;
1052: } else {
1053: $load = $loadans;
1054: }
1055: } else {
1056: $load = $userloadans;
1057: }
1058:
1059: if (($load =~ /\d/) && ($load < $lowest_load)) {
1060: $spare_server = $try_server;
1061: $lowest_load = $load;
1062: }
1063: return ($spare_server,$lowest_load);
1064: }
1065:
1066: # --------------------------- ask offload servers if user already has a session
1067: sub find_existing_session {
1068: my ($udom,$uname) = @_;
1069: my $spareshash = &this_host_spares($udom);
1070: if (ref($spareshash) eq 'HASH') {
1071: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
1072: foreach my $try_server (@{ $spareshash->{'primary'} }) {
1073: return $try_server if (&has_user_session($try_server, $udom, $uname));
1074: }
1075: }
1076: if (ref($spareshash->{'default'}) eq 'ARRAY') {
1077: foreach my $try_server (@{ $spareshash->{'default'} }) {
1078: return $try_server if (&has_user_session($try_server, $udom, $uname));
1079: }
1080: }
1081: }
1082: return;
1083: }
1084:
1085: sub delusersession {
1086: my ($lonid,$udom,$uname) = @_;
1087: my $uprimary_id = &domain($udom,'primary');
1088: my $uintdom = &internet_dom($uprimary_id);
1089: my $intdom = &internet_dom($lonid);
1090: my $serverhomedom = &host_domain($lonid);
1091: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1092: return &reply(join(':','delusersession',
1093: map {&escape($_)} ($udom,$uname)),$lonid);
1094: }
1095: return;
1096: }
1097:
1098: # check if user's browser sent load balancer cookie and server still has session
1099: # and is not overloaded.
1100: sub check_for_balancer_cookie {
1101: my ($r,$update_mtime) = @_;
1102: my ($otherserver,$cookie);
1103: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
1104: if (exists($cookies{'balanceID'})) {
1105: my $balid = $cookies{'balanceID'};
1106: $cookie=&LONCAPA::clean_handle($balid->value);
1107: my $balancedir=$r->dir_config('lonBalanceDir');
1108: if ((-d $balancedir) && (-e "$balancedir/$cookie.id")) {
1109: if ($cookie =~ /^($match_domain)_($match_username)_[a-f0-9]+$/) {
1110: my ($possudom,$possuname) = ($1,$2);
1111: my $has_session = 0;
1112: if ((&domain($possudom) ne '') &&
1113: (&homeserver($possuname,$possudom) ne 'no_host')) {
1114: my $try_server;
1115: my $opened = open(my $idf,'+<',"$balancedir/$cookie.id");
1116: if ($opened) {
1117: flock($idf,LOCK_SH);
1118: while (my $line = <$idf>) {
1119: chomp($line);
1120: if (&hostname($line) ne '') {
1121: $try_server = $line;
1122: last;
1123: }
1124: }
1125: close($idf);
1126: if (($try_server) &&
1127: (&has_user_session($try_server,$possudom,$possuname))) {
1128: my $lowest_load = 30000;
1129: ($otherserver,$lowest_load) =
1130: &compare_server_load($try_server,undef,$lowest_load);
1131: if ($otherserver ne '' && $lowest_load < 100) {
1132: $has_session = 1;
1133: } else {
1134: undef($otherserver);
1135: }
1136: }
1137: }
1138: }
1139: if ($has_session) {
1140: if ($update_mtime) {
1141: my $atime = my $mtime = time;
1142: utime($atime,$mtime,"$balancedir/$cookie.id");
1143: }
1144: } else {
1145: unlink("$balancedir/$cookie.id");
1146: }
1147: }
1148: }
1149: }
1150: return ($otherserver,$cookie);
1151: }
1152:
1153: sub delbalcookie {
1154: my ($cookie,$balancer) =@_;
1155: if ($cookie =~ /^($match_domain)\_($match_username)\_[a-f0-9]{32}$/) {
1156: my ($udom,$uname) = ($1,$2);
1157: my $uprimary_id = &domain($udom,'primary');
1158: my $uintdom = &internet_dom($uprimary_id);
1159: my $intdom = &internet_dom($balancer);
1160: my $serverhomedom = &host_domain($balancer);
1161: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1162: return &reply("delbalcookie:$cookie",$balancer);
1163: }
1164: }
1165: }
1166:
1167: # -------------------------------- ask if server already has a session for user
1168: sub has_user_session {
1169: my ($lonid,$udom,$uname) = @_;
1170: my $result = &reply(join(':','userhassession',
1171: map {&escape($_)} ($udom,$uname)),$lonid);
1172: return 1 if ($result eq 'ok');
1173:
1174: return 0;
1175: }
1176:
1177: # --------- determine least loaded server in a user's domain which allows login
1178:
1179: sub choose_server {
1180: my ($udom,$checkloginvia,$required,$skiploadbal) = @_;
1181: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
1182: my %servers = &get_servers($udom);
1183: my $lowest_load = 30000;
1184: my ($login_host,$hostname,$portal_path,$isredirect,$balancers);
1185: if ($skiploadbal) {
1186: ($balancers,my $cached)=&is_cached_new('loadbalancing',$udom);
1187: unless (defined($cached)) {
1188: my $cachetime = 60*60*24;
1189: my %domconfig =
1190: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1191: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1192: $balancers = &do_cache_new('loadbalancing',$udom,$domconfig{'loadbalancing'},
1193: $cachetime);
1194: }
1195: }
1196: }
1197: foreach my $lonhost (keys(%servers)) {
1198: if ($skiploadbal) {
1199: if (ref($balancers) eq 'HASH') {
1200: next if (exists($balancers->{$lonhost}));
1201: }
1202: }
1203: my $loginvia;
1204: if ($checkloginvia) {
1205: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
1206: if ($loginvia) {
1207: my ($server,$path) = split(/:/,$loginvia);
1208: ($login_host, $lowest_load) =
1209: &compare_server_load($server, $login_host, $lowest_load, $required);
1210: if ($login_host eq $server) {
1211: $portal_path = $path;
1212: $isredirect = 1;
1213: }
1214: } else {
1215: ($login_host, $lowest_load) =
1216: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1217: if ($login_host eq $lonhost) {
1218: $portal_path = '';
1219: $isredirect = '';
1220: }
1221: }
1222: } else {
1223: ($login_host, $lowest_load) =
1224: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1225: }
1226: }
1227: if ($login_host ne '') {
1228: $hostname = &hostname($login_host);
1229: }
1230: return ($login_host,$hostname,$portal_path,$isredirect,$lowest_load);
1231: }
1232:
1233: sub get_course_sessions {
1234: my ($cnum,$cdom,$lastactivity) = @_;
1235: my %servers = &internet_dom_servers($cdom);
1236: my %returnhash;
1237: foreach my $server (sort(keys(%servers))) {
1238: my $rep = &reply("coursesessions:$cdom:$cnum:$lastactivity",$server);
1239: my @pairs=split(/\&/,$rep);
1240: unless (($rep eq 'unknown_cmd') || ($rep =~ /^error/)) {
1241: foreach my $item (@pairs) {
1242: my ($key,$value)=split(/=/,$item,2);
1243: $key = &unescape($key);
1244: next if ($key =~ /^error: 2 /);
1245: if (exists($returnhash{$key})) {
1246: next if ($value < $returnhash{$key});
1247: }
1248: $returnhash{$key}=$value;
1249: }
1250: }
1251: }
1252: return %returnhash;
1253: }
1254:
1255: # --------------------------------------------- Try to change a user's password
1256:
1257: sub changepass {
1258: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
1259: $currentpass = &escape($currentpass);
1260: $newpass = &escape($newpass);
1261: my $lonhost = $perlvar{'lonHostID'};
1262: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
1263: $server);
1264: if (! $answer) {
1265: &logthis("No reply on password change request to $server ".
1266: "by $uname in domain $udom.");
1267: } elsif ($answer =~ "^ok") {
1268: &logthis("$uname in $udom successfully changed their password ".
1269: "on $server.");
1270: } elsif ($answer =~ "^pwchange_failure") {
1271: &logthis("$uname in $udom was unable to change their password ".
1272: "on $server. The action was blocked by either lcpasswd ".
1273: "or pwchange");
1274: } elsif ($answer =~ "^non_authorized") {
1275: &logthis("$uname in $udom did not get their password correct when ".
1276: "attempting to change it on $server.");
1277: } elsif ($answer =~ "^auth_mode_error") {
1278: &logthis("$uname in $udom attempted to change their password despite ".
1279: "not being locally or internally authenticated on $server.");
1280: } elsif ($answer =~ "^unknown_user") {
1281: &logthis("$uname in $udom attempted to change their password ".
1282: "on $server but were unable to because $server is not ".
1283: "their home server.");
1284: } elsif ($answer =~ "^refused") {
1285: &logthis("$server refused to change $uname in $udom password because ".
1286: "it was sent an unencrypted request to change the password.");
1287: } elsif ($answer =~ "invalid_client") {
1288: &logthis("$server refused to change $uname in $udom password because ".
1289: "it was a reset by e-mail originating from an invalid server.");
1290: } elsif ($answer =~ "^prioruse") {
1291: &logthis("$server refused to change $uname in $udom password because ".
1292: "the password had been used before");
1293: }
1294: return $answer;
1295: }
1296:
1297: # ----------------------- Try to determine user's current authentication scheme
1298:
1299: sub queryauthenticate {
1300: my ($uname,$udom)=@_;
1301: my $uhome=&homeserver($uname,$udom);
1302: if (!$uhome) {
1303: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1304: return 'no_host';
1305: }
1306: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1307: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1308: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1309: }
1310: return $answer;
1311: }
1312:
1313: # --------- Try to authenticate user from domain's lib servers (first this one)
1314:
1315: sub authenticate {
1316: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1317: $upass=&escape($upass);
1318: $uname= &LONCAPA::clean_username($uname);
1319: my $uhome=&homeserver($uname,$udom,1);
1320: my $newhome;
1321: if ((!$uhome) || ($uhome eq 'no_host')) {
1322: # Maybe the machine was offline and only re-appeared again recently?
1323: &reconlonc();
1324: # One more
1325: $uhome=&homeserver($uname,$udom,1);
1326: if (($uhome eq 'no_host') && $checkdefauth) {
1327: if (defined(&domain($udom,'primary'))) {
1328: $newhome=&domain($udom,'primary');
1329: }
1330: if ($newhome ne '') {
1331: $uhome = $newhome;
1332: }
1333: }
1334: if ((!$uhome) || ($uhome eq 'no_host')) {
1335: &logthis("User $uname at $udom is unknown in authenticate");
1336: return 'no_host';
1337: }
1338: }
1339: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1340: if ($answer eq 'authorized') {
1341: if ($newhome) {
1342: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1343: return 'no_account_on_host';
1344: } else {
1345: &logthis("User $uname at $udom authorized by $uhome");
1346: return $uhome;
1347: }
1348: }
1349: if ($answer eq 'non_authorized') {
1350: &logthis("User $uname at $udom rejected by $uhome");
1351: return 'no_host';
1352: }
1353: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1354: return 'no_host';
1355: }
1356:
1357: sub can_host_session {
1358: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1359: my $canhost = 1;
1360: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1361: if (ref($remotesessions) eq 'HASH') {
1362: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1363: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1364: $canhost = 0;
1365: } else {
1366: $canhost = 1;
1367: }
1368: }
1369: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1370: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1371: $canhost = 1;
1372: } else {
1373: $canhost = 0;
1374: }
1375: }
1376: if ($canhost) {
1377: if ($remotesessions->{'version'} ne '') {
1378: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1379: if ($reqmajor ne '' && $reqminor ne '') {
1380: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1381: my $major = $1;
1382: my $minor = $2;
1383: if (($major < $reqmajor ) ||
1384: (($major == $reqmajor) && ($minor < $reqminor))) {
1385: $canhost = 0;
1386: }
1387: } else {
1388: $canhost = 0;
1389: }
1390: }
1391: }
1392: }
1393: }
1394: if ($canhost) {
1395: if (ref($hostedsessions) eq 'HASH') {
1396: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1397: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1398: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1399: if (($uint_dom ne '') &&
1400: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1401: $canhost = 0;
1402: } else {
1403: $canhost = 1;
1404: }
1405: }
1406: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1407: if (($uint_dom ne '') &&
1408: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1409: $canhost = 1;
1410: } else {
1411: $canhost = 0;
1412: }
1413: }
1414: }
1415: }
1416: return $canhost;
1417: }
1418:
1419: sub spare_can_host {
1420: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1421: my $canhost=1;
1422: my $try_server_hostname = &hostname($try_server);
1423: my $serverhomeID = &get_server_homeID($try_server_hostname);
1424: my $serverhomedom = &host_domain($serverhomeID);
1425: my %defdomdefaults = &get_domain_defaults($serverhomedom);
1426: if (ref($defdomdefaults{'offloadnow'}) eq 'HASH') {
1427: if ($defdomdefaults{'offloadnow'}{$try_server}) {
1428: $canhost = 0;
1429: }
1430: }
1431: if (($canhost) && ($uint_dom)) {
1432: my @intdoms;
1433: my $internet_names = &get_internet_names($try_server);
1434: if (ref($internet_names) eq 'ARRAY') {
1435: @intdoms = @{$internet_names};
1436: }
1437: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1438: my $remoterev = &get_server_loncaparev(undef,$try_server);
1439: $canhost = &can_host_session($udom,$try_server,$remoterev,
1440: $remotesessions,
1441: $defdomdefaults{'hostedsessions'});
1442: }
1443: }
1444: return $canhost;
1445: }
1446:
1447: sub this_host_spares {
1448: my ($dom) = @_;
1449: my ($dom_in_use,$lonhost_in_use,$result);
1450: my @hosts = ¤t_machine_ids();
1451: foreach my $lonhost (@hosts) {
1452: if (&host_domain($lonhost) eq $dom) {
1453: $dom_in_use = $dom;
1454: $lonhost_in_use = $lonhost;
1455: last;
1456: }
1457: }
1458: if ($dom_in_use ne '') {
1459: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1460: }
1461: if (ref($result) ne 'HASH') {
1462: $lonhost_in_use = $perlvar{'lonHostID'};
1463: $dom_in_use = &host_domain($lonhost_in_use);
1464: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1465: if (ref($result) ne 'HASH') {
1466: $result = \%spareid;
1467: }
1468: }
1469: return $result;
1470: }
1471:
1472: sub spares_for_offload {
1473: my ($dom_in_use,$lonhost_in_use) = @_;
1474: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1475: if (defined($cached)) {
1476: return $result;
1477: } else {
1478: my $cachetime = 60*60*24;
1479: my %domconfig =
1480: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1481: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1482: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1483: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1484: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1485: }
1486: }
1487: }
1488: }
1489: return;
1490: }
1491:
1492: sub get_lonbalancer_config {
1493: my ($servers) = @_;
1494: my ($currbalancer,$currtargets);
1495: if (ref($servers) eq 'HASH') {
1496: foreach my $server (keys(%{$servers})) {
1497: my %what = (
1498: spareid => 1,
1499: perlvar => 1,
1500: );
1501: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1502: if ($result eq 'ok') {
1503: if (ref($returnhash) eq 'HASH') {
1504: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1505: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1506: $currbalancer = $server;
1507: $currtargets = {};
1508: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1509: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1510: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1511: }
1512: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1513: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1514: }
1515: }
1516: last;
1517: }
1518: }
1519: }
1520: }
1521: }
1522: }
1523: return ($currbalancer,$currtargets);
1524: }
1525:
1526: sub check_loadbalancing {
1527: my ($uname,$udom,$caller) = @_;
1528: my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
1529: $rule_in_effect,$offloadto,$otherserver,$setcookie,$dom_balancers);
1530: my $lonhost = $perlvar{'lonHostID'};
1531: my @hosts = ¤t_machine_ids();
1532: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1533: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1534: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1535: my $serverhomedom = &host_domain($lonhost);
1536: my $domneedscache;
1537: my $cachetime = 60*60*24;
1538:
1539: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1540: $dom_in_use = $udom;
1541: $homeintdom = 1;
1542: } else {
1543: $dom_in_use = $serverhomedom;
1544: }
1545: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1546: unless (defined($cached)) {
1547: my %domconfig =
1548: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1549: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1550: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1551: } else {
1552: $domneedscache = $dom_in_use;
1553: }
1554: }
1555: if (ref($result) eq 'HASH') {
1556: ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers) =
1557: &check_balancer_result($result,@hosts);
1558: if ($is_balancer) {
1559: if (ref($currrules) eq 'HASH') {
1560: if ($homeintdom) {
1561: if ($uname ne '') {
1562: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1563: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1564: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1565: $rule_in_effect = $currrules->{'_LC_author'};
1566: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1567: $rule_in_effect = $currrules->{'_LC_adv'}
1568: }
1569: }
1570: if ($rule_in_effect eq '') {
1571: my %userenv = &userenvironment($udom,$uname,'inststatus');
1572: if ($userenv{'inststatus'} ne '') {
1573: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1574: my ($othertitle,$usertypes,$types) =
1575: &Apache::loncommon::sorted_inst_types($udom);
1576: if (ref($types) eq 'ARRAY') {
1577: foreach my $type (@{$types}) {
1578: if (grep(/^\Q$type\E$/,@statuses)) {
1579: if (exists($currrules->{$type})) {
1580: $rule_in_effect = $currrules->{$type};
1581: }
1582: }
1583: }
1584: }
1585: } else {
1586: if (exists($currrules->{'default'})) {
1587: $rule_in_effect = $currrules->{'default'};
1588: }
1589: }
1590: }
1591: } else {
1592: if (exists($currrules->{'default'})) {
1593: $rule_in_effect = $currrules->{'default'};
1594: }
1595: }
1596: } else {
1597: if ($currrules->{'_LC_external'} ne '') {
1598: $rule_in_effect = $currrules->{'_LC_external'};
1599: }
1600: }
1601: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1602: $uname,$udom);
1603: }
1604: }
1605: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1606: ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1607: unless (defined($cached)) {
1608: my %domconfig =
1609: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1610: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1611: $result = &do_cache_new('loadbalancing',$serverhomedom,$domconfig{'loadbalancing'},$cachetime);
1612: } else {
1613: $domneedscache = $serverhomedom;
1614: }
1615: }
1616: if (ref($result) eq 'HASH') {
1617: ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers) =
1618: &check_balancer_result($result,@hosts);
1619: if ($is_balancer) {
1620: if (ref($currrules) eq 'HASH') {
1621: if ($currrules->{'_LC_internetdom'} ne '') {
1622: $rule_in_effect = $currrules->{'_LC_internetdom'};
1623: }
1624: }
1625: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1626: $uname,$udom);
1627: }
1628: } else {
1629: if ($perlvar{'lonBalancer'} eq 'yes') {
1630: $is_balancer = 1;
1631: $offloadto = &this_host_spares($dom_in_use);
1632: }
1633: unless (defined($cached)) {
1634: $domneedscache = $serverhomedom;
1635: }
1636: }
1637: } else {
1638: if ($perlvar{'lonBalancer'} eq 'yes') {
1639: $is_balancer = 1;
1640: $offloadto = &this_host_spares($dom_in_use);
1641: }
1642: unless (defined($cached)) {
1643: $domneedscache = $serverhomedom;
1644: }
1645: }
1646: if ($domneedscache) {
1647: &do_cache_new('loadbalancing',$domneedscache,$is_balancer,$cachetime);
1648: }
1649: if ($is_balancer) {
1650: my $lowest_load = 30000;
1651: if (ref($offloadto) eq 'HASH') {
1652: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1653: foreach my $try_server (@{$offloadto->{'primary'}}) {
1654: ($otherserver,$lowest_load) =
1655: &compare_server_load($try_server,$otherserver,$lowest_load);
1656: }
1657: }
1658: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1659:
1660: if (!$found_server) {
1661: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1662: foreach my $try_server (@{$offloadto->{'default'}}) {
1663: ($otherserver,$lowest_load) =
1664: &compare_server_load($try_server,$otherserver,$lowest_load);
1665: }
1666: }
1667: }
1668: } elsif (ref($offloadto) eq 'ARRAY') {
1669: if (@{$offloadto} == 1) {
1670: $otherserver = $offloadto->[0];
1671: } elsif (@{$offloadto} > 1) {
1672: foreach my $try_server (@{$offloadto}) {
1673: ($otherserver,$lowest_load) =
1674: &compare_server_load($try_server,$otherserver,$lowest_load);
1675: }
1676: }
1677: }
1678: unless ($caller eq 'login') {
1679: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1680: $is_balancer = 0;
1681: if ($uname ne '' && $udom ne '') {
1682: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1683: &appenv({'user.loadbalexempt' => $lonhost,
1684: 'user.loadbalcheck.time' => time});
1685: }
1686: }
1687: }
1688: }
1689: unless ($homeintdom) {
1690: undef($setcookie);
1691: }
1692: }
1693: return ($is_balancer,$otherserver,$setcookie,$offloadto,$dom_balancers);
1694: }
1695:
1696: sub check_balancer_result {
1697: my ($result,@hosts) = @_;
1698: my ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers);
1699: if (ref($result) eq 'HASH') {
1700: if ($result->{'lonhost'} ne '') {
1701: my $currbalancer = $result->{'lonhost'};
1702: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1703: $is_balancer = 1;
1704: $currtargets = $result->{'targets'};
1705: $currrules = $result->{'rules'};
1706: }
1707: $dom_balancers = $currbalancer;
1708: } else {
1709: if (keys(%{$result})) {
1710: foreach my $key (keys(%{$result})) {
1711: if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&
1712: (ref($result->{$key}) eq 'HASH')) {
1713: $is_balancer = 1;
1714: $currrules = $result->{$key}{'rules'};
1715: $currtargets = $result->{$key}{'targets'};
1716: $setcookie = $result->{$key}{'cookie'};
1717: last;
1718: }
1719: }
1720: $dom_balancers = join(',',sort(keys(%{$result})));
1721: }
1722: }
1723: }
1724: return ($is_balancer,$currtargets,$currrules,$setcookie,$dom_balancers);
1725: }
1726:
1727: sub get_loadbalancer_targets {
1728: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1729: my $offloadto;
1730: if ($rule_in_effect eq 'none') {
1731: return [$perlvar{'lonHostID'}];
1732: } elsif ($rule_in_effect eq '') {
1733: $offloadto = $currtargets;
1734: } else {
1735: if ($rule_in_effect eq 'homeserver') {
1736: my $homeserver = &homeserver($uname,$udom);
1737: if ($homeserver ne 'no_host') {
1738: $offloadto = [$homeserver];
1739: }
1740: } elsif ($rule_in_effect eq 'externalbalancer') {
1741: my %domconfig =
1742: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1743: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1744: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1745: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1746: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1747: }
1748: }
1749: } else {
1750: my %servers = &internet_dom_servers($udom);
1751: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1752: if (&hostname($remotebalancer) ne '') {
1753: $offloadto = [$remotebalancer];
1754: }
1755: }
1756: } elsif (&hostname($rule_in_effect) ne '') {
1757: $offloadto = [$rule_in_effect];
1758: }
1759: }
1760: return $offloadto;
1761: }
1762:
1763: sub internet_dom_servers {
1764: my ($dom) = @_;
1765: my (%uniqservers,%servers);
1766: my $primaryserver = &hostname(&domain($dom,'primary'));
1767: my @machinedoms = &machine_domains($primaryserver);
1768: foreach my $mdom (@machinedoms) {
1769: my %currservers = %servers;
1770: my %server = &get_servers($mdom);
1771: %servers = (%currservers,%server);
1772: }
1773: my %by_hostname;
1774: foreach my $id (keys(%servers)) {
1775: push(@{$by_hostname{$servers{$id}}},$id);
1776: }
1777: foreach my $hostname (sort(keys(%by_hostname))) {
1778: if (@{$by_hostname{$hostname}} > 1) {
1779: my $match = 0;
1780: foreach my $id (@{$by_hostname{$hostname}}) {
1781: if (&host_domain($id) eq $dom) {
1782: $uniqservers{$id} = $hostname;
1783: $match = 1;
1784: }
1785: }
1786: unless ($match) {
1787: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1788: }
1789: } else {
1790: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1791: }
1792: }
1793: return %uniqservers;
1794: }
1795:
1796: sub trusted_domains {
1797: my ($cmdtype,$calldom) = @_;
1798: my ($trusted,$untrusted);
1799: if (&domain($calldom) eq '') {
1800: return ($trusted,$untrusted);
1801: }
1802: unless ($cmdtype =~ /^(content|shared|enroll|coaurem|othcoau|domroles|catalog|reqcrs|msg)$/) {
1803: return ($trusted,$untrusted);
1804: }
1805: my $callprimary = &domain($calldom,'primary');
1806: my $intcalldom = &Apache::lonnet::internet_dom($callprimary);
1807: if ($intcalldom eq '') {
1808: return ($trusted,$untrusted);
1809: }
1810:
1811: my ($trustconfig,$cached)=&Apache::lonnet::is_cached_new('trust',$calldom);
1812: unless (defined($cached)) {
1813: my %domconfig = &Apache::lonnet::get_dom('configuration',['trust'],$calldom);
1814: &Apache::lonnet::do_cache_new('trust',$calldom,$domconfig{'trust'},3600);
1815: $trustconfig = $domconfig{'trust'};
1816: }
1817: if (ref($trustconfig)) {
1818: my (%possexc,%possinc,@allexc,@allinc);
1819: if (ref($trustconfig->{$cmdtype}) eq 'HASH') {
1820: if (ref($trustconfig->{$cmdtype}->{'exc'}) eq 'ARRAY') {
1821: map { $possexc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'exc'}};
1822: }
1823: if (ref($trustconfig->{$cmdtype}->{'inc'}) eq 'ARRAY') {
1824: $possinc{$intcalldom} = 1;
1825: map { $possinc{$_} = 1; } @{$trustconfig->{$cmdtype}->{'inc'}};
1826: }
1827: }
1828: if (keys(%possexc)) {
1829: if (keys(%possinc)) {
1830: foreach my $key (sort(keys(%possexc))) {
1831: next if ($key eq $intcalldom);
1832: unless ($possinc{$key}) {
1833: push(@allexc,$key);
1834: }
1835: }
1836: } else {
1837: @allexc = sort(keys(%possexc));
1838: }
1839: }
1840: if (keys(%possinc)) {
1841: $possinc{$intcalldom} = 1;
1842: @allinc = sort(keys(%possinc));
1843: }
1844: if ((@allexc > 0) || (@allinc > 0)) {
1845: my %doms_by_intdom;
1846: my %allintdoms = &all_host_intdom();
1847: my %alldoms = &all_host_domain();
1848: foreach my $key (%allintdoms) {
1849: if (ref($doms_by_intdom{$allintdoms{$key}}) eq 'ARRAY') {
1850: unless (grep(/^\Q$alldoms{$key}\E$/,@{$doms_by_intdom{$allintdoms{$key}}})) {
1851: push(@{$doms_by_intdom{$allintdoms{$key}}},$alldoms{$key});
1852: }
1853: } else {
1854: $doms_by_intdom{$allintdoms{$key}} = [$alldoms{$key}];
1855: }
1856: }
1857: foreach my $exc (@allexc) {
1858: if (ref($doms_by_intdom{$exc}) eq 'ARRAY') {
1859: push(@{$untrusted},@{$doms_by_intdom{$exc}});
1860: }
1861: }
1862: foreach my $inc (@allinc) {
1863: if (ref($doms_by_intdom{$inc}) eq 'ARRAY') {
1864: push(@{$trusted},@{$doms_by_intdom{$inc}});
1865: }
1866: }
1867: }
1868: }
1869: return ($trusted,$untrusted);
1870: }
1871:
1872: sub will_trust {
1873: my ($cmdtype,$domain,$possdom) = @_;
1874: return 1 if ($domain eq $possdom);
1875: my ($trustedref,$untrustedref) = &trusted_domains($cmdtype,$possdom);
1876: my $willtrust;
1877: if ((ref($trustedref) eq 'ARRAY') && (@{$trustedref} > 0)) {
1878: if (grep(/^\Q$domain\E$/,@{$trustedref})) {
1879: $willtrust = 1;
1880: }
1881: } elsif ((ref($untrustedref) eq 'ARRAY') && (@{$untrustedref} > 0)) {
1882: unless (grep(/^\Q$domain\E$/,@{$untrustedref})) {
1883: $willtrust = 1;
1884: }
1885: } else {
1886: $willtrust = 1;
1887: }
1888: return $willtrust;
1889: }
1890:
1891: # ---------------------- Find the homebase for a user from domain's lib servers
1892:
1893: my %homecache;
1894: sub homeserver {
1895: my ($uname,$udom,$ignoreBadCache)=@_;
1896: my $index="$uname:$udom";
1897:
1898: if (exists($homecache{$index})) { return $homecache{$index}; }
1899:
1900: my %servers = &get_servers($udom,'library');
1901: foreach my $tryserver (keys(%servers)) {
1902: next if ($ignoreBadCache ne 'true' &&
1903: exists($badServerCache{$tryserver}));
1904:
1905: my $answer=reply("home:$udom:$uname",$tryserver);
1906: if ($answer eq 'found') {
1907: delete($badServerCache{$tryserver});
1908: return $homecache{$index}=$tryserver;
1909: } elsif ($answer eq 'no_host') {
1910: $badServerCache{$tryserver}=1;
1911: }
1912: }
1913: return 'no_host';
1914: }
1915:
1916: # ----- Find the usernames behind a list of student/employee IDs or clicker IDs
1917:
1918: sub idget {
1919: my ($udom,$idsref,$namespace)=@_;
1920: my %returnhash=();
1921: my @ids=();
1922: if (ref($idsref) eq 'ARRAY') {
1923: @ids = @{$idsref};
1924: } else {
1925: return %returnhash;
1926: }
1927: if ($namespace eq '') {
1928: $namespace = 'ids';
1929: }
1930:
1931: my %servers = &get_servers($udom,'library');
1932: foreach my $tryserver (keys(%servers)) {
1933: my $idlist=join('&', map { &escape($_); } @ids);
1934: if ($namespace eq 'ids') {
1935: $idlist=~tr/A-Z/a-z/;
1936: }
1937: my $reply;
1938: if ($namespace eq 'ids') {
1939: $reply=&reply("idget:$udom:".$idlist,$tryserver);
1940: } else {
1941: $reply=&reply("getdom:$udom:$namespace:$idlist",$tryserver);
1942: }
1943: my @answer=();
1944: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1945: @answer=split(/\&/,$reply);
1946: } ;
1947: my $i;
1948: for ($i=0;$i<=$#ids;$i++) {
1949: if ($answer[$i]) {
1950: $returnhash{$ids[$i]}=&unescape($answer[$i]);
1951: }
1952: }
1953: }
1954: return %returnhash;
1955: }
1956:
1957: # ------------------------------------- Find the IDs behind a list of usernames
1958:
1959: sub idrget {
1960: my ($udom,@unames)=@_;
1961: my %returnhash=();
1962: foreach my $uname (@unames) {
1963: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1964: }
1965: return %returnhash;
1966: }
1967:
1968: # Store away a list of names and associated student/employee IDs or clicker IDs
1969:
1970: sub idput {
1971: my ($udom,$idsref,$uhom,$namespace)=@_;
1972: my %servers=();
1973: my %ids=();
1974: my %byid = ();
1975: if (ref($idsref) eq 'HASH') {
1976: %ids=%{$idsref};
1977: }
1978: if ($namespace eq '') {
1979: $namespace = 'ids';
1980: }
1981: foreach my $uname (keys(%ids)) {
1982: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1983: if ($uhom eq '') {
1984: $uhom=&homeserver($uname,$udom);
1985: }
1986: if ($uhom ne 'no_host') {
1987: my $esc_unam=&escape($uname);
1988: if ($namespace eq 'ids') {
1989: my $id=&escape($ids{$uname});
1990: $id=~tr/A-Z/a-z/;
1991: my $esc_unam=&escape($uname);
1992: $servers{$uhom}.=$id.'='.$esc_unam.'&';
1993: } else {
1994: my @currids = split(/,/,$ids{$uname});
1995: foreach my $id (@currids) {
1996: $byid{$uhom}{$id} .= $uname.',';
1997: }
1998: }
1999: }
2000: }
2001: if ($namespace eq 'clickers') {
2002: foreach my $server (keys(%byid)) {
2003: if (ref($byid{$server}) eq 'HASH') {
2004: foreach my $id (keys(%{$byid{$server}})) {
2005: $byid{$server} =~ s/,$//;
2006: $servers{$uhom}.=&escape($id).'='.&escape($byid{$server}).'&';
2007: }
2008: }
2009: }
2010: }
2011: foreach my $server (keys(%servers)) {
2012: $servers{$server} =~ s/\&$//;
2013: if ($namespace eq 'ids') {
2014: &critical('idput:'.$udom.':'.$servers{$server},$server);
2015: } else {
2016: &critical('updateclickers:'.$udom.':add:'.$servers{$server},$server);
2017: }
2018: }
2019: }
2020:
2021: # ------------- Delete unwanted student/employee IDs or clicker IDs from domain
2022:
2023: sub iddel {
2024: my ($udom,$idshashref,$uhome,$namespace)=@_;
2025: my %result=();
2026: my %ids=();
2027: my %byid = ();
2028: if (ref($idshashref) eq 'HASH') {
2029: %ids=%{$idshashref};
2030: } else {
2031: return %result;
2032: }
2033: if ($namespace eq '') {
2034: $namespace = 'ids';
2035: }
2036: my %servers=();
2037: while (my ($id,$unamestr) = each(%ids)) {
2038: if ($namespace eq 'ids') {
2039: my $uhom = $uhome;
2040: if ($uhom eq '') {
2041: $uhom=&homeserver($unamestr,$udom);
2042: }
2043: if ($uhom ne 'no_host') {
2044: $servers{$uhom}.='&'.&escape($id);
2045: }
2046: } else {
2047: my @curritems = split(/,/,$ids{$id});
2048: foreach my $uname (@curritems) {
2049: my $uhom = $uhome;
2050: if ($uhom eq '') {
2051: $uhom=&homeserver($uname,$udom);
2052: }
2053: if ($uhom ne 'no_host') {
2054: $byid{$uhom}{$id} .= $uname.',';
2055: }
2056: }
2057: }
2058: }
2059: if ($namespace eq 'clickers') {
2060: foreach my $server (keys(%byid)) {
2061: if (ref($byid{$server}) eq 'HASH') {
2062: foreach my $id (keys(%{$byid{$server}})) {
2063: $byid{$server}{$id} =~ s/,$//;
2064: $servers{$server}.=&escape($id).'='.&escape($byid{$server}{$id}).'&';
2065: }
2066: }
2067: }
2068: }
2069: foreach my $server (keys(%servers)) {
2070: $servers{$server} =~ s/\&$//;
2071: if ($namespace eq 'ids') {
2072: $result{$server} = &critical('iddel:'.$udom.':'.$servers{$server},$uhome);
2073: } elsif ($namespace eq 'clickers') {
2074: $result{$server} = &critical('updateclickers:'.$udom.':del:'.$servers{$server},$server);
2075: }
2076: }
2077: return %result;
2078: }
2079:
2080: # ----- Update clicker ID-to-username look-ups in clickers.db on library server
2081:
2082: sub updateclickers {
2083: my ($udom,$action,$idshashref,$uhome,$critical) = @_;
2084: my %clickers;
2085: if (ref($idshashref) eq 'HASH') {
2086: %clickers=%{$idshashref};
2087: } else {
2088: return;
2089: }
2090: my $items='';
2091: foreach my $item (keys(%clickers)) {
2092: $items.=&escape($item).'='.&escape($clickers{$item}).'&';
2093: }
2094: $items=~s/\&$//;
2095: my $request = "updateclickers:$udom:$action:$items";
2096: if ($critical) {
2097: return &critical($request,$uhome);
2098: } else {
2099: return &reply($request,$uhome);
2100: }
2101: }
2102:
2103: # ------------------------------dump from db file owned by domainconfig user
2104: sub dump_dom {
2105: my ($namespace, $udom, $regexp) = @_;
2106:
2107: $udom ||= $env{'user.domain'};
2108:
2109: return () unless $udom;
2110:
2111: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
2112: }
2113:
2114: # ------------------------------------------ get items from domain db files
2115:
2116: sub get_dom {
2117: my ($namespace,$storearr,$udom,$uhome)=@_;
2118: return if ($udom eq 'public');
2119: my $items='';
2120: foreach my $item (@$storearr) {
2121: $items.=&escape($item).'&';
2122: }
2123: $items=~s/\&$//;
2124: if (!$udom) {
2125: $udom=$env{'user.domain'};
2126: return if ($udom eq 'public');
2127: if (defined(&domain($udom,'primary'))) {
2128: $uhome=&domain($udom,'primary');
2129: } else {
2130: undef($uhome);
2131: }
2132: } else {
2133: if (!$uhome) {
2134: if (defined(&domain($udom,'primary'))) {
2135: $uhome=&domain($udom,'primary');
2136: }
2137: }
2138: }
2139: if ($udom && $uhome && ($uhome ne 'no_host')) {
2140: my $rep;
2141: if ($namespace =~ /^enc/) {
2142: $rep=&reply("encrypt:egetdom:$udom:$namespace:$items",$uhome);
2143: } else {
2144: $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
2145: }
2146: my %returnhash;
2147: if ($rep eq '' || $rep =~ /^error: 2 /) {
2148: return %returnhash;
2149: }
2150: my @pairs=split(/\&/,$rep);
2151: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
2152: return @pairs;
2153: }
2154: my $i=0;
2155: foreach my $item (@$storearr) {
2156: $returnhash{$item}=&thaw_unescape($pairs[$i]);
2157: $i++;
2158: }
2159: return %returnhash;
2160: } else {
2161: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
2162: }
2163: }
2164:
2165: # -------------------------------------------- put items in domain db files
2166:
2167: sub put_dom {
2168: my ($namespace,$storehash,$udom,$uhome)=@_;
2169: if (!$udom) {
2170: $udom=$env{'user.domain'};
2171: if (defined(&domain($udom,'primary'))) {
2172: $uhome=&domain($udom,'primary');
2173: } else {
2174: undef($uhome);
2175: }
2176: } else {
2177: if (!$uhome) {
2178: if (defined(&domain($udom,'primary'))) {
2179: $uhome=&domain($udom,'primary');
2180: }
2181: }
2182: }
2183: if ($udom && $uhome && ($uhome ne 'no_host')) {
2184: my $items='';
2185: foreach my $item (keys(%$storehash)) {
2186: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
2187: }
2188: $items=~s/\&$//;
2189: if ($namespace =~ /^enc/) {
2190: return &reply("encrypt:putdom:$udom:$namespace:$items",$uhome);
2191: } else {
2192: return &reply("putdom:$udom:$namespace:$items",$uhome);
2193: }
2194: } else {
2195: &logthis("put_dom failed - no homeserver and/or domain");
2196: }
2197: }
2198:
2199: # --------------------- newput for items in db file owned by domainconfig user
2200: sub newput_dom {
2201: my ($namespace,$storehash,$udom) = @_;
2202: my $result;
2203: if (!$udom) {
2204: $udom=$env{'user.domain'};
2205: }
2206: if ($udom) {
2207: my $uname = &get_domainconfiguser($udom);
2208: $result = &newput($namespace,$storehash,$udom,$uname);
2209: }
2210: return $result;
2211: }
2212:
2213: # --------------------- delete for items in db file owned by domainconfig user
2214: sub del_dom {
2215: my ($namespace,$storearr,$udom)=@_;
2216: if (ref($storearr) eq 'ARRAY') {
2217: if (!$udom) {
2218: $udom=$env{'user.domain'};
2219: }
2220: if ($udom) {
2221: my $uname = &get_domainconfiguser($udom);
2222: return &del($namespace,$storearr,$udom,$uname);
2223: }
2224: }
2225: }
2226:
2227: # ----------------------------------construct domainconfig user for a domain
2228: sub get_domainconfiguser {
2229: my ($udom) = @_;
2230: return $udom.'-domainconfig';
2231: }
2232:
2233: sub retrieve_inst_usertypes {
2234: my ($udom) = @_;
2235: my (%returnhash,@order);
2236: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
2237: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
2238: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
2239: return ($domdefs{'inststatustypes'},$domdefs{'inststatusorder'});
2240: } else {
2241: if (defined(&domain($udom,'primary'))) {
2242: my $uhome=&domain($udom,'primary');
2243: my $rep=&reply("inst_usertypes:$udom",$uhome);
2244: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
2245: &logthis("retrieve_inst_usertypes failed - $rep returned from $uhome in domain: $udom");
2246: return (\%returnhash,\@order);
2247: }
2248: my ($hashitems,$orderitems) = split(/:/,$rep);
2249: my @pairs=split(/\&/,$hashitems);
2250: foreach my $item (@pairs) {
2251: my ($key,$value)=split(/=/,$item,2);
2252: $key = &unescape($key);
2253: next if ($key =~ /^error: 2 /);
2254: $returnhash{$key}=&thaw_unescape($value);
2255: }
2256: my @esc_order = split(/\&/,$orderitems);
2257: foreach my $item (@esc_order) {
2258: push(@order,&unescape($item));
2259: }
2260: } else {
2261: &logthis("retrieve_inst_usertypes failed - no primary domain server for $udom");
2262: }
2263: return (\%returnhash,\@order);
2264: }
2265: }
2266:
2267: sub is_domainimage {
2268: my ($url) = @_;
2269: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+[^/]-) {
2270: if (&domain($1) ne '') {
2271: return '1';
2272: }
2273: }
2274: return;
2275: }
2276:
2277: sub inst_directory_query {
2278: my ($srch) = @_;
2279: my $udom = $srch->{'srchdomain'};
2280: my %results;
2281: my $homeserver = &domain($udom,'primary');
2282: my $outcome;
2283: if ($homeserver ne '') {
2284: unless ($homeserver eq $perlvar{'lonHostID'}) {
2285: if ($srch->{'srchby'} eq 'email') {
2286: my $lcrev = &get_server_loncaparev($udom,$homeserver);
2287: my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
2288: if (($major eq '' && $minor eq '') || ($major < 2) ||
2289: (($major == 2) && ($minor < 12))) {
2290: return;
2291: }
2292: }
2293: }
2294: my $queryid=&reply("querysend:instdirsearch:".
2295: &escape($srch->{'srchby'}).':'.
2296: &escape($srch->{'srchterm'}).':'.
2297: &escape($srch->{'srchtype'}),$homeserver);
2298: my $host=&hostname($homeserver);
2299: if ($queryid !~/^\Q$host\E\_/) {
2300: &logthis('institutional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.' in domain '.$udom);
2301: return;
2302: }
2303: my $response = &get_query_reply($queryid);
2304: my $maxtries = 5;
2305: my $tries = 1;
2306: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2307: $response = &get_query_reply($queryid);
2308: $tries ++;
2309: }
2310:
2311: if (!&error($response) && $response ne 'refused') {
2312: if ($response eq 'unavailable') {
2313: $outcome = $response;
2314: } else {
2315: $outcome = 'ok';
2316: my @matches = split(/\n/,$response);
2317: foreach my $match (@matches) {
2318: my ($key,$value) = split(/=/,$match);
2319: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
2320: }
2321: }
2322: }
2323: }
2324: return ($outcome,%results);
2325: }
2326:
2327: sub usersearch {
2328: my ($srch) = @_;
2329: my $dom = $srch->{'srchdomain'};
2330: my %results;
2331: my %libserv = &all_library();
2332: my $query = 'usersearch';
2333: foreach my $tryserver (keys(%libserv)) {
2334: if (&host_domain($tryserver) eq $dom) {
2335: unless ($tryserver eq $perlvar{'lonHostID'}) {
2336: if ($srch->{'srchby'} eq 'email') {
2337: my $lcrev = &get_server_loncaparev($dom,$tryserver);
2338: my ($major,$minor) = ($lcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
2339: next if (($major eq '' && $minor eq '') || ($major < 2) ||
2340: (($major == 2) && ($minor < 12)));
2341: }
2342: }
2343: my $host=&hostname($tryserver);
2344: my $queryid=
2345: &reply("querysend:".&escape($query).':'.
2346: &escape($srch->{'srchby'}).':'.
2347: &escape($srch->{'srchtype'}).':'.
2348: &escape($srch->{'srchterm'}),$tryserver);
2349: if ($queryid !~/^\Q$host\E\_/) {
2350: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
2351: next;
2352: }
2353: my $reply = &get_query_reply($queryid);
2354: my $maxtries = 1;
2355: my $tries = 1;
2356: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
2357: $reply = &get_query_reply($queryid);
2358: $tries ++;
2359: }
2360: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
2361: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
2362: } else {
2363: my @matches;
2364: if ($reply =~ /\n/) {
2365: @matches = split(/\n/,$reply);
2366: } else {
2367: @matches = split(/\&/,$reply);
2368: }
2369: foreach my $match (@matches) {
2370: my ($uname,$udom,%userhash);
2371: foreach my $entry (split(/:/,$match)) {
2372: my ($key,$value) =
2373: map {&unescape($_);} split(/=/,$entry);
2374: $userhash{$key} = $value;
2375: if ($key eq 'username') {
2376: $uname = $value;
2377: } elsif ($key eq 'domain') {
2378: $udom = $value;
2379: }
2380: }
2381: $results{$uname.':'.$udom} = \%userhash;
2382: }
2383: }
2384: }
2385: }
2386: return %results;
2387: }
2388:
2389: sub get_instuser {
2390: my ($udom,$uname,$id) = @_;
2391: my $homeserver = &domain($udom,'primary');
2392: my ($outcome,%results);
2393: if ($homeserver ne '') {
2394: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
2395: &escape($id).':'.&escape($udom),$homeserver);
2396: my $host=&hostname($homeserver);
2397: if ($queryid !~/^\Q$host\E\_/) {
2398: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
2399: return;
2400: }
2401: my $response = &get_query_reply($queryid);
2402: my $maxtries = 5;
2403: my $tries = 1;
2404: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2405: $response = &get_query_reply($queryid);
2406: $tries ++;
2407: }
2408: if (!&error($response) && $response ne 'refused') {
2409: if ($response eq 'unavailable') {
2410: $outcome = $response;
2411: } else {
2412: $outcome = 'ok';
2413: my @matches = split(/\n/,$response);
2414: foreach my $match (@matches) {
2415: my ($key,$value) = split(/=/,$match);
2416: $results{&unescape($key)} = &thaw_unescape($value);
2417: }
2418: }
2419: }
2420: }
2421: my %userinfo;
2422: if (ref($results{$uname}) eq 'HASH') {
2423: %userinfo = %{$results{$uname}};
2424: }
2425: return ($outcome,%userinfo);
2426: }
2427:
2428: sub get_multiple_instusers {
2429: my ($udom,$users,$caller) = @_;
2430: my ($outcome,$results);
2431: if (ref($users) eq 'HASH') {
2432: my $count = keys(%{$users});
2433: my $requested = &freeze_escape($users);
2434: my $homeserver = &domain($udom,'primary');
2435: if ($homeserver ne '') {
2436: my $queryid=&reply('querysend:getmultinstusers:::'.$caller.'='.$requested,$homeserver);
2437: my $host=&hostname($homeserver);
2438: if ($queryid !~/^\Q$host\E\_/) {
2439: &logthis('get_multiple_instusers invalid queryid: '.$queryid.
2440: ' for host: '.$homeserver.'in domain '.$udom);
2441: return ($outcome,$results);
2442: }
2443: my $response = &get_query_reply($queryid);
2444: my $maxtries = 5;
2445: if ($count > 100) {
2446: $maxtries = 1+int($count/20);
2447: }
2448: my $tries = 1;
2449: while (($response=~/^timeout/) && ($tries <= $maxtries)) {
2450: $response = &get_query_reply($queryid);
2451: $tries ++;
2452: }
2453: if ($response eq '') {
2454: $results = {};
2455: foreach my $key (keys(%{$users})) {
2456: my ($uname,$id);
2457: if ($caller eq 'id') {
2458: $id = $key;
2459: } else {
2460: $uname = $key;
2461: }
2462: my ($resp,%info) = &get_instuser($udom,$uname,$id);
2463: $outcome = $resp;
2464: if ($resp eq 'ok') {
2465: %{$results} = (%{$results}, %info);
2466: } else {
2467: last;
2468: }
2469: }
2470: } elsif(!&error($response) && ($response ne 'refused')) {
2471: if (($response eq 'unavailable') || ($response eq 'invalid') || ($response eq 'timeout')) {
2472: $outcome = $response;
2473: } else {
2474: ($outcome,my $userdata) = split(/=/,$response,2);
2475: if ($outcome eq 'ok') {
2476: $results = &thaw_unescape($userdata);
2477: }
2478: }
2479: }
2480: }
2481: }
2482: return ($outcome,$results);
2483: }
2484:
2485: sub inst_rulecheck {
2486: my ($udom,$uname,$id,$item,$rules) = @_;
2487: my %returnhash;
2488: if ($udom ne '') {
2489: if (ref($rules) eq 'ARRAY') {
2490: @{$rules} = map {&escape($_);} (@{$rules});
2491: my $rulestr = join(':',@{$rules});
2492: my $homeserver=&domain($udom,'primary');
2493: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2494: my $response;
2495: if ($item eq 'username') {
2496: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
2497: ':'.&escape($uname).':'.$rulestr,
2498: $homeserver));
2499: } elsif ($item eq 'id') {
2500: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
2501: ':'.&escape($id).':'.$rulestr,
2502: $homeserver));
2503: } elsif ($item eq 'selfcreate') {
2504: $response=&unescape(&reply('instselfcreatecheck:'.
2505: &escape($udom).':'.&escape($uname).
2506: ':'.$rulestr,$homeserver));
2507: }
2508: if ($response ne 'refused') {
2509: my @pairs=split(/\&/,$response);
2510: foreach my $item (@pairs) {
2511: my ($key,$value)=split(/=/,$item,2);
2512: $key = &unescape($key);
2513: next if ($key =~ /^error: 2 /);
2514: $returnhash{$key}=&thaw_unescape($value);
2515: }
2516: }
2517: }
2518: }
2519: }
2520: return %returnhash;
2521: }
2522:
2523: sub inst_userrules {
2524: my ($udom,$check) = @_;
2525: my (%ruleshash,@ruleorder);
2526: if ($udom ne '') {
2527: my $homeserver=&domain($udom,'primary');
2528: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2529: my $response;
2530: if ($check eq 'id') {
2531: $response=&reply('instidrules:'.&escape($udom),
2532: $homeserver);
2533: } elsif ($check eq 'email') {
2534: $response=&reply('instemailrules:'.&escape($udom),
2535: $homeserver);
2536: } else {
2537: $response=&reply('instuserrules:'.&escape($udom),
2538: $homeserver);
2539: }
2540: if (($response ne 'refused') && ($response ne 'error') &&
2541: ($response ne 'unknown_cmd') &&
2542: ($response ne 'no_such_host')) {
2543: my ($hashitems,$orderitems) = split(/:/,$response);
2544: my @pairs=split(/\&/,$hashitems);
2545: foreach my $item (@pairs) {
2546: my ($key,$value)=split(/=/,$item,2);
2547: $key = &unescape($key);
2548: next if ($key =~ /^error: 2 /);
2549: $ruleshash{$key}=&thaw_unescape($value);
2550: }
2551: my @esc_order = split(/\&/,$orderitems);
2552: foreach my $item (@esc_order) {
2553: push(@ruleorder,&unescape($item));
2554: }
2555: }
2556: }
2557: }
2558: return (\%ruleshash,\@ruleorder);
2559: }
2560:
2561: # ------------- Get Authentication, Language and User Tools Defaults for Domain
2562:
2563: sub get_domain_defaults {
2564: my ($domain,$ignore_cache) = @_;
2565: return if (($domain eq '') || ($domain eq 'public'));
2566: my $cachetime = 60*60*24;
2567: unless ($ignore_cache) {
2568: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
2569: if (defined($cached)) {
2570: if (ref($result) eq 'HASH') {
2571: return %{$result};
2572: }
2573: }
2574: }
2575: my %domdefaults;
2576: my %domconfig =
2577: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
2578: 'requestcourses','inststatus',
2579: 'coursedefaults','usersessions',
2580: 'requestauthor','selfenrollment',
2581: 'coursecategories','ssl','autoenroll',
2582: 'trust','helpsettings'],$domain);
2583: my @coursetypes = ('official','unofficial','community','textbook','placement');
2584: if (ref($domconfig{'defaults'}) eq 'HASH') {
2585: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
2586: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
2587: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
2588: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
2589: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
2590: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
2591: $domdefaults{'intauth_cost'} = $domconfig{'defaults'}{'intauth_cost'};
2592: $domdefaults{'intauth_switch'} = $domconfig{'defaults'}{'intauth_switch'};
2593: $domdefaults{'intauth_check'} = $domconfig{'defaults'}{'intauth_check'};
2594: } else {
2595: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
2596: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
2597: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
2598: }
2599: if (ref($domconfig{'quotas'}) eq 'HASH') {
2600: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
2601: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
2602: } else {
2603: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
2604: }
2605: my @usertools = ('aboutme','blog','webdav','portfolio');
2606: foreach my $item (@usertools) {
2607: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
2608: $domdefaults{$item} = $domconfig{'quotas'}{$item};
2609: }
2610: }
2611: if (ref($domconfig{'quotas'}{'authorquota'}) eq 'HASH') {
2612: $domdefaults{'authorquota'} = $domconfig{'quotas'}{'authorquota'};
2613: }
2614: }
2615: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
2616: foreach my $item ('official','unofficial','community','textbook','placement') {
2617: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
2618: }
2619: }
2620: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
2621: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
2622: }
2623: if (ref($domconfig{'inststatus'}) eq 'HASH') {
2624: foreach my $item ('inststatustypes','inststatusorder','inststatusguest') {
2625: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2626: }
2627: }
2628: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2629: $domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
2630: $domdefaults{'usejsme'} = $domconfig{'coursedefaults'}{'usejsme'};
2631: $domdefaults{'uselcmath'} = $domconfig{'coursedefaults'}{'uselcmath'};
2632: if (ref($domconfig{'coursedefaults'}{'postsubmit'}) eq 'HASH') {
2633: $domdefaults{'postsubmit'} = $domconfig{'coursedefaults'}{'postsubmit'}{'client'};
2634: }
2635: foreach my $type (@coursetypes) {
2636: if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
2637: unless ($type eq 'community') {
2638: $domdefaults{$type.'credits'} = $domconfig{'coursedefaults'}{'coursecredits'}{$type};
2639: }
2640: }
2641: if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
2642: $domdefaults{$type.'quota'} = $domconfig{'coursedefaults'}{'uploadquota'}{$type};
2643: }
2644: if ($domdefaults{'postsubmit'} eq 'on') {
2645: if (ref($domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}) eq 'HASH') {
2646: $domdefaults{$type.'postsubtimeout'} =
2647: $domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}{$type};
2648: }
2649: }
2650: }
2651: if (ref($domconfig{'coursedefaults'}{'canclone'}) eq 'HASH') {
2652: if (ref($domconfig{'coursedefaults'}{'canclone'}{'instcode'}) eq 'ARRAY') {
2653: my @clonecodes = @{$domconfig{'coursedefaults'}{'canclone'}{'instcode'}};
2654: if (@clonecodes) {
2655: $domdefaults{'canclone'} = join('+',@clonecodes);
2656: }
2657: }
2658: } elsif ($domconfig{'coursedefaults'}{'canclone'}) {
2659: $domdefaults{'canclone'}=$domconfig{'coursedefaults'}{'canclone'};
2660: }
2661: if ($domconfig{'coursedefaults'}{'texengine'}) {
2662: $domdefaults{'texengine'} = $domconfig{'coursedefaults'}{'texengine'};
2663: }
2664: }
2665: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2666: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2667: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2668: }
2669: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2670: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2671: }
2672: if (ref($domconfig{'usersessions'}{'offloadnow'}) eq 'HASH') {
2673: $domdefaults{'offloadnow'} = $domconfig{'usersessions'}{'offloadnow'};
2674: }
2675: }
2676: if (ref($domconfig{'selfenrollment'}) eq 'HASH') {
2677: if (ref($domconfig{'selfenrollment'}{'admin'}) eq 'HASH') {
2678: my @settings = ('types','registered','enroll_dates','access_dates','section',
2679: 'approval','limit');
2680: foreach my $type (@coursetypes) {
2681: if (ref($domconfig{'selfenrollment'}{'admin'}{$type}) eq 'HASH') {
2682: my @mgrdc = ();
2683: foreach my $item (@settings) {
2684: if ($domconfig{'selfenrollment'}{'admin'}{$type}{$item} eq '0') {
2685: push(@mgrdc,$item);
2686: }
2687: }
2688: if (@mgrdc) {
2689: $domdefaults{$type.'selfenrolladmdc'} = join(',',@mgrdc);
2690: }
2691: }
2692: }
2693: }
2694: if (ref($domconfig{'selfenrollment'}{'default'}) eq 'HASH') {
2695: foreach my $type (@coursetypes) {
2696: if (ref($domconfig{'selfenrollment'}{'default'}{$type}) eq 'HASH') {
2697: foreach my $item (keys(%{$domconfig{'selfenrollment'}{'default'}{$type}})) {
2698: $domdefaults{$type.'selfenroll'.$item} = $domconfig{'selfenrollment'}{'default'}{$type}{$item};
2699: }
2700: }
2701: }
2702: }
2703: }
2704: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
2705: $domdefaults{'catauth'} = 'std';
2706: $domdefaults{'catunauth'} = 'std';
2707: if ($domconfig{'coursecategories'}{'auth'}) {
2708: $domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};
2709: }
2710: if ($domconfig{'coursecategories'}{'unauth'}) {
2711: $domdefaults{'catunauth'} = $domconfig{'coursecategories'}{'unauth'};
2712: }
2713: }
2714: if (ref($domconfig{'ssl'}) eq 'HASH') {
2715: if (ref($domconfig{'ssl'}{'replication'}) eq 'HASH') {
2716: $domdefaults{'replication'} = $domconfig{'ssl'}{'replication'};
2717: }
2718: if (ref($domconfig{'ssl'}{'connto'}) eq 'HASH') {
2719: $domdefaults{'connect'} = $domconfig{'ssl'}{'connto'};
2720: }
2721: if (ref($domconfig{'ssl'}{'connfrom'}) eq 'HASH') {
2722: $domdefaults{'connect'} = $domconfig{'ssl'}{'connfrom'};
2723: }
2724: }
2725: if (ref($domconfig{'trust'}) eq 'HASH') {
2726: my @prefixes = qw(content shared enroll othcoau coaurem domroles catalog reqcrs msg);
2727: foreach my $prefix (@prefixes) {
2728: if (ref($domconfig{'trust'}{$prefix}) eq 'HASH') {
2729: $domdefaults{'trust'.$prefix} = $domconfig{'trust'}{$prefix};
2730: }
2731: }
2732: }
2733: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
2734: $domdefaults{'autofailsafe'} = $domconfig{'autoenroll'}{'autofailsafe'};
2735: }
2736: if (ref($domconfig{'helpsettings'}) eq 'HASH') {
2737: $domdefaults{'submitbugs'} = $domconfig{'helpsettings'}{'submitbugs'};
2738: if (ref($domconfig{'helpsettings'}{'adhoc'}) eq 'HASH') {
2739: $domdefaults{'adhocroles'} = $domconfig{'helpsettings'}{'adhoc'};
2740: }
2741: }
2742: &do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
2743: return %domdefaults;
2744: }
2745:
2746: sub get_dom_cats {
2747: my ($dom) = @_;
2748: return unless (&domain($dom));
2749: my ($cats,$cached)=&is_cached_new('cats',$dom);
2750: unless (defined($cached)) {
2751: my %domconfig = &get_dom('configuration',['coursecategories'],$dom);
2752: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
2753: if (ref($domconfig{'coursecategories'}{'cats'}) eq 'HASH') {
2754: %{$cats} = %{$domconfig{'coursecategories'}{'cats'}};
2755: } else {
2756: $cats = {};
2757: }
2758: } else {
2759: $cats = {};
2760: }
2761: &Apache::lonnet::do_cache_new('cats',$dom,$cats,3600);
2762: }
2763: return $cats;
2764: }
2765:
2766: sub get_dom_instcats {
2767: my ($dom) = @_;
2768: return unless (&domain($dom));
2769: my ($instcats,$cached)=&is_cached_new('instcats',$dom);
2770: unless (defined($cached)) {
2771: my (%coursecodes,%codes,@codetitles,%cat_titles,%cat_order);
2772: my $totcodes = &retrieve_instcodes(\%coursecodes,$dom);
2773: if ($totcodes > 0) {
2774: my $caller = 'global';
2775: if (&auto_instcode_format($caller,$dom,\%coursecodes,\%codes,
2776: \@codetitles,\%cat_titles,\%cat_order) eq 'ok') {
2777: $instcats = {
2778: codes => \%codes,
2779: codetitles => \@codetitles,
2780: cat_titles => \%cat_titles,
2781: cat_order => \%cat_order,
2782: };
2783: &do_cache_new('instcats',$dom,$instcats,3600);
2784: }
2785: }
2786: }
2787: return $instcats;
2788: }
2789:
2790: sub retrieve_instcodes {
2791: my ($coursecodes,$dom) = @_;
2792: my $totcodes;
2793: my %courses = &courseiddump($dom,'.',1,'.','.','.',undef,undef,'Course');
2794: foreach my $course (keys(%courses)) {
2795: if (ref($courses{$course}) eq 'HASH') {
2796: if ($courses{$course}{'inst_code'} ne '') {
2797: $$coursecodes{$course} = $courses{$course}{'inst_code'};
2798: $totcodes ++;
2799: }
2800: }
2801: }
2802: return $totcodes;
2803: }
2804:
2805: sub course_portal_url {
2806: my ($cnum,$cdom) = @_;
2807: my $chome = &homeserver($cnum,$cdom);
2808: my $hostname = &hostname($chome);
2809: my $protocol = $protocol{$chome};
2810: $protocol = 'http' if ($protocol ne 'https');
2811: my %domdefaults = &get_domain_defaults($cdom);
2812: my $firsturl;
2813: if ($domdefaults{'portal_def'}) {
2814: $firsturl = $domdefaults{'portal_def'};
2815: } else {
2816: $firsturl = $protocol.'://'.$hostname;
2817: }
2818: return $firsturl;
2819: }
2820:
2821: # --------------------------------------------- Get domain config for passwords
2822:
2823: sub get_passwdconf {
2824: my ($dom) = @_;
2825: my (%passwdconf,$gotconf,$lookup);
2826: my ($result,$cached)=&is_cached_new('passwdconf',$dom);
2827: if (defined($cached)) {
2828: if (ref($result) eq 'HASH') {
2829: %passwdconf = %{$result};
2830: $gotconf = 1;
2831: }
2832: }
2833: unless ($gotconf) {
2834: my %domconfig = &get_dom('configuration',['passwords'],$dom);
2835: if (ref($domconfig{'passwords'}) eq 'HASH') {
2836: %passwdconf = %{$domconfig{'passwords'}};
2837: }
2838: my $cachetime = 24*60*60;
2839: &do_cache_new('passwdconf',$dom,\%passwdconf,$cachetime);
2840: }
2841: return %passwdconf;
2842: }
2843:
2844: # --------------------------------------------------- Assign a key to a student
2845:
2846: sub assign_access_key {
2847: #
2848: # a valid key looks like uname:udom#comments
2849: # comments are being appended
2850: #
2851: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2852: $kdom=
2853: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2854: $knum=
2855: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2856: $cdom=
2857: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2858: $cnum=
2859: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2860: $udom=$env{'user.name'} unless (defined($udom));
2861: $uname=$env{'user.domain'} unless (defined($uname));
2862: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2863: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2864: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2865: # assigned to this person
2866: # - this should not happen,
2867: # unless something went wrong
2868: # the first time around
2869: # ready to assign
2870: $logentry=$1.'; '.$logentry;
2871: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2872: $kdom,$knum) eq 'ok') {
2873: # key now belongs to user
2874: my $envkey='key.'.$cdom.'_'.$cnum;
2875: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2876: &appenv({'environment.'.$envkey => $ckey});
2877: return 'ok';
2878: } else {
2879: return
2880: 'error: Count not permanently assign key, will need to be re-entered later.';
2881: }
2882: } else {
2883: return 'error: Could not assign key, try again later.';
2884: }
2885: } elsif (!$existing{$ckey}) {
2886: # the key does not exist
2887: return 'error: The key does not exist';
2888: } else {
2889: # the key is somebody else's
2890: return 'error: The key is already in use';
2891: }
2892: }
2893:
2894: # ------------------------------------------ put an additional comment on a key
2895:
2896: sub comment_access_key {
2897: #
2898: # a valid key looks like uname:udom#comments
2899: # comments are being appended
2900: #
2901: my ($ckey,$cdom,$cnum,$logentry)=@_;
2902: $cdom=
2903: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2904: $cnum=
2905: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2906: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2907: if ($existing{$ckey}) {
2908: $existing{$ckey}.='; '.$logentry;
2909: # ready to assign
2910: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2911: $cdom,$cnum) eq 'ok') {
2912: return 'ok';
2913: } else {
2914: return 'error: Count not store comment.';
2915: }
2916: } else {
2917: # the key does not exist
2918: return 'error: The key does not exist';
2919: }
2920: }
2921:
2922: # ------------------------------------------------------ Generate a set of keys
2923:
2924: sub generate_access_keys {
2925: my ($number,$cdom,$cnum,$logentry)=@_;
2926: $cdom=
2927: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2928: $cnum=
2929: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2930: unless (&allowed('mky',$cdom)) { return 0; }
2931: unless (($cdom) && ($cnum)) { return 0; }
2932: if ($number>10000) { return 0; }
2933: sleep(2); # make sure don't get same seed twice
2934: srand(time()^($$+($$<<15))); # from "Programming Perl"
2935: my $total=0;
2936: for (my $i=1;$i<=$number;$i++) {
2937: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2938: sprintf("%lx",int(100000*rand)).'-'.
2939: sprintf("%lx",int(100000*rand));
2940: $newkey=~s/1/g/g; # folks mix up 1 and l
2941: $newkey=~s/0/h/g; # and also 0 and O
2942: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2943: if ($existing{$newkey}) {
2944: $i--;
2945: } else {
2946: if (&put('accesskeys',
2947: { $newkey => '# generated '.localtime().
2948: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2949: '; '.$logentry },
2950: $cdom,$cnum) eq 'ok') {
2951: $total++;
2952: }
2953: }
2954: }
2955: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2956: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2957: return $total;
2958: }
2959:
2960: # ------------------------------------------------------- Validate an accesskey
2961:
2962: sub validate_access_key {
2963: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2964: $cdom=
2965: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2966: $cnum=
2967: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2968: $udom=$env{'user.domain'} unless (defined($udom));
2969: $uname=$env{'user.name'} unless (defined($uname));
2970: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2971: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2972: }
2973:
2974: # ------------------------------------- Find the section of student in a course
2975: sub devalidate_getsection_cache {
2976: my ($udom,$unam,$courseid)=@_;
2977: my $hashid="$udom:$unam:$courseid";
2978: &devalidate_cache_new('getsection',$hashid);
2979: }
2980:
2981: sub courseid_to_courseurl {
2982: my ($courseid) = @_;
2983: #already url style courseid
2984: return $courseid if ($courseid =~ m{^/});
2985:
2986: if (exists($env{'course.'.$courseid.'.num'})) {
2987: my $cnum = $env{'course.'.$courseid.'.num'};
2988: my $cdom = $env{'course.'.$courseid.'.domain'};
2989: return "/$cdom/$cnum";
2990: }
2991:
2992: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2993: if (exists($courseinfo{'num'})) {
2994: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2995: }
2996:
2997: return undef;
2998: }
2999:
3000: sub getsection {
3001: my ($udom,$unam,$courseid)=@_;
3002: my $cachetime=1800;
3003:
3004: my $hashid="$udom:$unam:$courseid";
3005: my ($result,$cached)=&is_cached_new('getsection',$hashid);
3006: if (defined($cached)) { return $result; }
3007:
3008: my %Pending;
3009: my %Expired;
3010: #
3011: # Each role can either have not started yet (pending), be active,
3012: # or have expired.
3013: #
3014: # If there is an active role, we are done.
3015: #
3016: # If there is more than one role which has not started yet,
3017: # choose the one which will start sooner
3018: # If there is one role which has not started yet, return it.
3019: #
3020: # If there is more than one expired role, choose the one which ended last.
3021: # If there is a role which has expired, return it.
3022: #
3023: $courseid = &courseid_to_courseurl($courseid);
3024: my %roleshash = &dump('roles',$udom,$unam,$courseid);
3025: foreach my $key (keys(%roleshash)) {
3026: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
3027: my $section=$1;
3028: if ($key eq $courseid.'_st') { $section=''; }
3029: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
3030: my $now=time;
3031: if (defined($end) && $end && ($now > $end)) {
3032: $Expired{$end}=$section;
3033: next;
3034: }
3035: if (defined($start) && $start && ($now < $start)) {
3036: $Pending{$start}=$section;
3037: next;
3038: }
3039: return &do_cache_new('getsection',$hashid,$section,$cachetime);
3040: }
3041: #
3042: # Presumedly there will be few matching roles from the above
3043: # loop and the sorting time will be negligible.
3044: if (scalar(keys(%Pending))) {
3045: my ($time) = sort {$a <=> $b} keys(%Pending);
3046: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
3047: }
3048: if (scalar(keys(%Expired))) {
3049: my @sorted = sort {$a <=> $b} keys(%Expired);
3050: my $time = pop(@sorted);
3051: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
3052: }
3053: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
3054: }
3055:
3056: sub save_cache {
3057: &purge_remembered();
3058: #&Apache::loncommon::validate_page();
3059: undef(%env);
3060: undef($env_loaded);
3061: }
3062:
3063: my $to_remember=-1;
3064: my %remembered;
3065: my %accessed;
3066: my $kicks=0;
3067: my $hits=0;
3068: sub make_key {
3069: my ($name,$id) = @_;
3070: if (length($id) > 65
3071: && length(&escape($id)) > 200) {
3072: $id=length($id).':'.&Digest::MD5::md5_hex($id);
3073: }
3074: return &escape($name.':'.$id);
3075: }
3076:
3077: sub devalidate_cache_new {
3078: my ($name,$id,$debug) = @_;
3079: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
3080: my $remembered_id=$name.':'.$id;
3081: $id=&make_key($name,$id);
3082: $memcache->delete($id);
3083: delete($remembered{$remembered_id});
3084: delete($accessed{$remembered_id});
3085: }
3086:
3087: sub is_cached_new {
3088: my ($name,$id,$debug) = @_;
3089: my $remembered_id=$name.':'.$id; # this is to avoid make_key (which is slow) whenever possible
3090: if (exists($remembered{$remembered_id})) {
3091: if ($debug) { &Apache::lonnet::logthis("Early return $remembered_id of $remembered{$remembered_id} "); }
3092: $accessed{$remembered_id}=[&gettimeofday()];
3093: $hits++;
3094: return ($remembered{$remembered_id},1);
3095: }
3096: $id=&make_key($name,$id);
3097: my $value = $memcache->get($id);
3098: if (!(defined($value))) {
3099: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
3100: return (undef,undef);
3101: }
3102: if ($value eq '__undef__') {
3103: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
3104: $value=undef;
3105: }
3106: &make_room($remembered_id,$value,$debug);
3107: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
3108: return ($value,1);
3109: }
3110:
3111: sub do_cache_new {
3112: my ($name,$id,$value,$time,$debug) = @_;
3113: my $remembered_id=$name.':'.$id;
3114: $id=&make_key($name,$id);
3115: my $setvalue=$value;
3116: if (!defined($setvalue)) {
3117: $setvalue='__undef__';
3118: }
3119: if (!defined($time) ) {
3120: $time=600;
3121: }
3122: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
3123: my $result = $memcache->set($id,$setvalue,$time);
3124: if (! $result) {
3125: &logthis("caching of id -> $id failed");
3126: $memcache->disconnect_all();
3127: }
3128: # need to make a copy of $value
3129: &make_room($remembered_id,$value,$debug);
3130: return $value;
3131: }
3132:
3133: sub make_room {
3134: my ($remembered_id,$value,$debug)=@_;
3135:
3136: $remembered{$remembered_id}= (ref($value)) ? &Storable::dclone($value)
3137: : $value;
3138: if ($to_remember<0) { return; }
3139: $accessed{$remembered_id}=[&gettimeofday()];
3140: if (scalar(keys(%remembered)) <= $to_remember) { return; }
3141: my $to_kick;
3142: my $max_time=0;
3143: foreach my $other (keys(%accessed)) {
3144: if (&tv_interval($accessed{$other}) > $max_time) {
3145: $to_kick=$other;
3146: $max_time=&tv_interval($accessed{$other});
3147: }
3148: }
3149: delete($remembered{$to_kick});
3150: delete($accessed{$to_kick});
3151: $kicks++;
3152: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
3153: return;
3154: }
3155:
3156: sub purge_remembered {
3157: #&logthis("Tossing ".scalar(keys(%remembered)));
3158: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
3159: undef(%remembered);
3160: undef(%accessed);
3161: }
3162: # ------------------------------------- Read an entry from a user's environment
3163:
3164: sub userenvironment {
3165: my ($udom,$unam,@what)=@_;
3166: my $items;
3167: foreach my $item (@what) {
3168: $items.=&escape($item).'&';
3169: }
3170: $items=~s/\&$//;
3171: my %returnhash=();
3172: my $uhome = &homeserver($unam,$udom);
3173: unless ($uhome eq 'no_host') {
3174: my @answer=split(/\&/,
3175: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
3176: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
3177: return %returnhash;
3178: }
3179: my $i;
3180: for ($i=0;$i<=$#what;$i++) {
3181: $returnhash{$what[$i]}=&unescape($answer[$i]);
3182: }
3183: }
3184: return %returnhash;
3185: }
3186:
3187: # ---------------------------------------------------------- Get a studentphoto
3188: sub studentphoto {
3189: my ($udom,$unam,$ext) = @_;
3190: my $home=&Apache::lonnet::homeserver($unam,$udom);
3191: if (defined($env{'request.course.id'})) {
3192: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
3193: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
3194: return(&retrievestudentphoto($udom,$unam,$ext));
3195: } else {
3196: my ($result,$perm_reqd)=
3197: &Apache::lonnet::auto_photo_permission($unam,$udom);
3198: if ($result eq 'ok') {
3199: if (!($perm_reqd eq 'yes')) {
3200: return(&retrievestudentphoto($udom,$unam,$ext));
3201: }
3202: }
3203: }
3204: }
3205: } else {
3206: my ($result,$perm_reqd) =
3207: &Apache::lonnet::auto_photo_permission($unam,$udom);
3208: if ($result eq 'ok') {
3209: if (!($perm_reqd eq 'yes')) {
3210: return(&retrievestudentphoto($udom,$unam,$ext));
3211: }
3212: }
3213: }
3214: return '/adm/lonKaputt/lonlogo_broken.gif';
3215: }
3216:
3217: sub retrievestudentphoto {
3218: my ($udom,$unam,$ext,$type) = @_;
3219: my $home=&Apache::lonnet::homeserver($unam,$udom);
3220: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
3221: if ($ret eq 'ok') {
3222: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
3223: if ($type eq 'thumbnail') {
3224: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
3225: }
3226: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
3227: return $tokenurl;
3228: } else {
3229: if ($type eq 'thumbnail') {
3230: return '/adm/lonKaputt/genericstudent_tn.gif';
3231: } else {
3232: return '/adm/lonKaputt/lonlogo_broken.gif';
3233: }
3234: }
3235: }
3236:
3237: # -------------------------------------------------------------------- New chat
3238:
3239: sub chatsend {
3240: my ($newentry,$anon,$group)=@_;
3241: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
3242: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3243: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
3244: &reply('chatsend:'.$cdom.':'.$cnum.':'.
3245: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
3246: &escape($newentry)).':'.$group,$chome);
3247: }
3248:
3249: # ------------------------------------------ Find current version of a resource
3250:
3251: sub getversion {
3252: my $fname=&clutter(shift);
3253: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
3254: return ¤tversion(&filelocation('',$fname));
3255: }
3256:
3257: sub currentversion {
3258: my $fname=shift;
3259: my $author=$fname;
3260: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3261: my ($udom,$uname)=split(/\//,$author);
3262: my $home=&homeserver($uname,$udom);
3263: if ($home eq 'no_host') {
3264: return -1;
3265: }
3266: my $answer=&reply("currentversion:$fname",$home);
3267: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3268: return -1;
3269: }
3270: return $answer;
3271: }
3272:
3273: #
3274: # Return special version number of resource if set by override, empty otherwise
3275: #
3276: sub usedversion {
3277: my $fname=shift;
3278: unless ($fname) { $fname=$env{'request.uri'}; }
3279: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
3280: if ($urlversion) { return $urlversion; }
3281: return '';
3282: }
3283:
3284: # ----------------------------- Subscribe to a resource, return URL if possible
3285:
3286: sub subscribe {
3287: my $fname=shift;
3288: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
3289: $fname=~s/[\n\r]//g;
3290: my $author=$fname;
3291: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3292: my ($udom,$uname)=split(/\//,$author);
3293: my $home=homeserver($uname,$udom);
3294: if ($home eq 'no_host') {
3295: return 'not_found';
3296: }
3297: my $answer=reply("sub:$fname",$home);
3298: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
3299: $answer.=' by '.$home;
3300: }
3301: return $answer;
3302: }
3303:
3304: # -------------------------------------------------------------- Replicate file
3305:
3306: sub repcopy {
3307: my $filename=shift;
3308: $filename=~s/\/+/\//g;
3309: my $londocroot = $perlvar{'lonDocRoot'};
3310: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
3311: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
3312: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
3313: $filename=~m{^/*(uploaded|editupload)/}) {
3314: return &repcopy_userfile($filename);
3315: }
3316: $filename=~s/[\n\r]//g;
3317: my $transname="$filename.in.transfer";
3318: # FIXME: this should flock
3319: if ((-e $filename) || (-e $transname)) { return 'ok'; }
3320: my $remoteurl=subscribe($filename);
3321: if ($remoteurl =~ /^con_lost by/) {
3322: &logthis("Subscribe returned $remoteurl: $filename");
3323: return 'unavailable';
3324: } elsif ($remoteurl eq 'not_found') {
3325: #&logthis("Subscribe returned not_found: $filename");
3326: return 'not_found';
3327: } elsif ($remoteurl =~ /^rejected by/) {
3328: &logthis("Subscribe returned $remoteurl: $filename");
3329: return 'forbidden';
3330: } elsif ($remoteurl eq 'directory') {
3331: return 'ok';
3332: } else {
3333: my $author=$filename;
3334: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
3335: my ($udom,$uname)=split(/\//,$author);
3336: my $home=homeserver($uname,$udom);
3337: unless ($home eq $perlvar{'lonHostID'}) {
3338: my @parts=split(/\//,$filename);
3339: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
3340: if ($path ne "$londocroot/res") {
3341: &logthis("Malconfiguration for replication: $filename");
3342: return 'bad_request';
3343: }
3344: my $count;
3345: for ($count=5;$count<$#parts;$count++) {
3346: $path.="/$parts[$count]";
3347: if ((-e $path)!=1) {
3348: mkdir($path,0777);
3349: }
3350: }
3351: my $request=new HTTP::Request('GET',"$remoteurl");
3352: my $response;
3353: if ($remoteurl =~ m{/raw/}) {
3354: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',0,1);
3355: } else {
3356: $response=&LONCAPA::LWPReq::makerequest($home,$request,$transname,\%perlvar,'',1);
3357: }
3358: if ($response->is_error()) {
3359: unlink($transname);
3360: my $message=$response->status_line;
3361: &logthis("<font color=\"blue\">WARNING:"
3362: ." LWP get: $message: $filename</font>");
3363: return 'unavailable';
3364: } else {
3365: if ($remoteurl!~/\.meta$/) {
3366: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
3367: my $mresponse;
3368: if ($remoteurl =~ m{/raw/}) {
3369: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',0,1);
3370: } else {
3371: $mresponse = &LONCAPA::LWPReq::makerequest($home,$mrequest,$filename.'.meta',\%perlvar,'',1);
3372: }
3373: if ($mresponse->is_error()) {
3374: unlink($filename.'.meta');
3375: &logthis(
3376: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
3377: }
3378: }
3379: rename($transname,$filename);
3380: return 'ok';
3381: }
3382: }
3383: }
3384: }
3385:
3386: # ------------------------------------------------ Get server side include body
3387: sub ssi_body {
3388: my ($filelink,%form)=@_;
3389: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
3390: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
3391: }
3392: my $output='';
3393: my $response;
3394: if ($filelink=~/^https?\:/) {
3395: ($output,$response)=&externalssi($filelink);
3396: } else {
3397: $filelink .= $filelink=~/\?/ ? '&' : '?';
3398: $filelink .= 'inhibitmenu=yes';
3399: ($output,$response)=&ssi($filelink,%form);
3400: }
3401: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
3402: $output=~s/^.*?\<body[^\>]*\>//si;
3403: $output=~s/\<\/body\s*\>.*?$//si;
3404: if (wantarray) {
3405: return ($output, $response);
3406: } else {
3407: return $output;
3408: }
3409: }
3410:
3411: # --------------------------------------------------------- Server Side Include
3412:
3413: sub absolute_url {
3414: my ($host_name) = @_;
3415: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
3416: if ($host_name eq '') {
3417: $host_name = $ENV{'SERVER_NAME'};
3418: }
3419: return $protocol.$host_name;
3420: }
3421:
3422: #
3423: # Server side include.
3424: # Parameters:
3425: # fn Possibly encrypted resource name/id.
3426: # form Hash that describes how the rendering should be done
3427: # and other things.
3428: # Returns:
3429: # Scalar context: The content of the response.
3430: # Array context: 2 element list of the content and the full response object.
3431: #
3432: sub ssi {
3433:
3434: my ($fn,%form)=@_;
3435: my $request;
3436:
3437: $form{'no_update_last_known'}=1;
3438: &Apache::lonenc::check_encrypt(\$fn);
3439: if (%form) {
3440: $request=new HTTP::Request('POST',&absolute_url().$fn);
3441: $request->content(join('&',map {
3442: my $name = escape($_);
3443: "$name=" . ( ref($form{$_}) eq 'ARRAY'
3444: ? join("&$name=", map {escape($_) } @{$form{$_}})
3445: : &escape($form{$_}) );
3446: } keys(%form)));
3447: } else {
3448: $request=new HTTP::Request('GET',&absolute_url().$fn);
3449: }
3450:
3451: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
3452: my $lonhost = $perlvar{'lonHostID'};
3453: my $islocal;
3454: if (($env{'request.course.id'}) &&
3455: ($form{'grade_courseid'} eq $env{'request.course.id'}) &&
3456: ($form{'grade_username'} ne '') && ($form{'grade_domain'} ne '') &&
3457: ($form{'grade_symb'} ne '') &&
3458: (&Apache::lonnet::allowed('mgr',$env{'request.course.id'}.
3459: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:'')))) {
3460: $islocal = 1;
3461: }
3462: my $response= &LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,
3463: '','','',$islocal);
3464:
3465: if (wantarray) {
3466: return ($response->content, $response);
3467: } else {
3468: return $response->content;
3469: }
3470: }
3471:
3472: sub externalssi {
3473: my ($url)=@_;
3474: my $request=new HTTP::Request('GET',$url);
3475: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar);
3476: if (wantarray) {
3477: return ($response->content, $response);
3478: } else {
3479: return $response->content;
3480: }
3481: }
3482:
3483:
3484: # If the local copy of a replicated resource is outdated, trigger a
3485: # connection from the homeserver to flush the delayed queue. If no update
3486: # happens, remove local copies of outdated resource (and corresponding
3487: # metadata file).
3488:
3489: sub remove_stale_resfile {
3490: my ($url) = @_;
3491: my $removed;
3492: if ($url=~m{^/res/($match_domain)/($match_username)/}) {
3493: my $audom = $1;
3494: my $auname = $2;
3495: unless (($url =~ /\.\d+\.\w+$/) || ($url =~ m{^/res/lib/templates/})) {
3496: my $homeserver = &homeserver($auname,$audom);
3497: unless (($homeserver eq 'no_host') ||
3498: (grep { $_ eq $homeserver } ¤t_machine_ids())) {
3499: my $fname = &filelocation('',$url);
3500: if (-e $fname) {
3501: my $hostname = &hostname($homeserver);
3502: if ($hostname) {
3503: my $protocol = $protocol{$homeserver};
3504: $protocol = 'http' if ($protocol ne 'https');
3505: my $uri = &declutter($url);
3506: my $request=new HTTP::Request('HEAD',$protocol.'://'.$hostname.'/raw/'.$uri);
3507: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,5,0,1);
3508: if ($response->is_success()) {
3509: my $remmodtime = &HTTP::Date::str2time( $response->header('Last-modified') );
3510: my $locmodtime = (stat($fname))[9];
3511: if ($locmodtime < $remmodtime) {
3512: my $stale;
3513: my $answer = &reply('pong',$homeserver);
3514: if ($answer eq $homeserver.':'.$perlvar{'lonHostID'}) {
3515: sleep(0.2);
3516: $locmodtime = (stat($fname))[9];
3517: if ($locmodtime < $remmodtime) {
3518: my $posstransfer = $fname.'.in.transfer';
3519: if ((-e $posstransfer) && ($remmodtime < (stat($posstransfer))[9])) {
3520: $removed = 1;
3521: } else {
3522: $stale = 1;
3523: }
3524: } else {
3525: $removed = 1;
3526: }
3527: } else {
3528: $stale = 1;
3529: }
3530: if ($stale) {
3531: if (unlink($fname)) {
3532: if ($uri!~/\.meta$/) {
3533: if (-e $fname.'.meta') {
3534: unlink($fname.'.meta');
3535: }
3536: }
3537: &reply("unsub:$fname",$homeserver);
3538: $removed = 1;
3539: }
3540: }
3541: }
3542: }
3543: }
3544: }
3545: }
3546: }
3547: }
3548: return $removed;
3549: }
3550:
3551: # -------------------------------- Allow a /uploaded/ URI to be vouched for
3552:
3553: sub allowuploaded {
3554: my ($srcurl,$url)=@_;
3555: $url=&clutter(&declutter($url));
3556: my $dir=$url;
3557: $dir=~s/\/[^\/]+$//;
3558: my %httpref=();
3559: my $httpurl=&hreflocation('',$url);
3560: $httpref{'httpref.'.$httpurl}=$srcurl;
3561: &Apache::lonnet::appenv(\%httpref);
3562: }
3563:
3564: #
3565: # Determine if the current user should be able to edit a particular resource,
3566: # when viewing in course context.
3567: # (a) When viewing resource used to determine if "Edit" item is included in
3568: # Functions.
3569: # (b) When displaying folder contents in course editor, used to determine if
3570: # "Edit" link will be displayed alongside resource.
3571: #
3572: # input: six args -- filename (decluttered), course number, course domain,
3573: # url, symb (if registered) and group (if this is a group
3574: # item -- e.g., bulletin board, group page etc.).
3575: # output: array of five scalars --
3576: # $cfile -- url for file editing if editable on current server
3577: # $home -- homeserver of resource (i.e., for author if published,
3578: # or course if uploaded.).
3579: # $switchserver -- 1 if server switch will be needed.
3580: # $forceedit -- 1 if icon/link should be to go to edit mode
3581: # $forceview -- 1 if icon/link should be to go to view mode
3582: #
3583:
3584: sub can_edit_resource {
3585: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
3586: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
3587: #
3588: # For aboutme pages user can only edit his/her own.
3589: #
3590: if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
3591: my ($sdom,$sname) = ($1,$2);
3592: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
3593: $home = $env{'user.home'};
3594: $cfile = $resurl;
3595: if ($env{'form.forceedit'}) {
3596: $forceview = 1;
3597: } else {
3598: $forceedit = 1;
3599: }
3600: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3601: } else {
3602: return;
3603: }
3604: }
3605:
3606: if ($env{'request.course.id'}) {
3607: my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
3608: if ($group ne '') {
3609: # if this is a group homepage or group bulletin board, check group privs
3610: my $allowed = 0;
3611: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
3612: if ((&allowed('mdg',$env{'request.course.id'}.
3613: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3614: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3615: $allowed = 1;
3616: }
3617: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
3618: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3619: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3620: $allowed = 1;
3621: }
3622: }
3623: if ($allowed) {
3624: $home=&homeserver($cnum,$cdom);
3625: if ($env{'form.forceedit'}) {
3626: $forceview = 1;
3627: } else {
3628: $forceedit = 1;
3629: }
3630: $cfile = $resurl;
3631: } else {
3632: return;
3633: }
3634: } else {
3635: if ($resurl =~ m{^/?adm/viewclasslist$}) {
3636: unless (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
3637: return;
3638: }
3639: } elsif (!$crsedit) {
3640: #
3641: # No edit allowed where CC has switched to student role.
3642: #
3643: return;
3644: }
3645: }
3646: }
3647:
3648: if ($file ne '') {
3649: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
3650: if (&is_course_upload($file,$cnum,$cdom)) {
3651: $uploaded = 1;
3652: $incourse = 1;
3653: if ($file =~/\.(htm|html|css|js|txt)$/) {
3654: $cfile = &hreflocation('',$file);
3655: if ($env{'form.forceedit'}) {
3656: $forceview = 1;
3657: } else {
3658: $forceedit = 1;
3659: }
3660: }
3661: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
3662: $incourse = 1;
3663: if ($env{'form.forceedit'}) {
3664: $forceview = 1;
3665: } else {
3666: $forceedit = 1;
3667: }
3668: $cfile = $resurl;
3669: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
3670: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
3671: $incourse = 1;
3672: if ($env{'form.forceedit'}) {
3673: $forceview = 1;
3674: } else {
3675: $forceedit = 1;
3676: }
3677: $cfile = $resurl;
3678: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem') {
3679: $incourse = 1;
3680: $cfile = $resurl.'/smpedit';
3681: } elsif ($resurl =~ m{^/adm/wrapper/ext/}) {
3682: $incourse = 1;
3683: if ($env{'form.forceedit'}) {
3684: $forceview = 1;
3685: } else {
3686: $forceedit = 1;
3687: }
3688: $cfile = $resurl;
3689: } elsif (($resurl =~ m{^/ext/}) && ($symb ne '')) {
3690: my ($map,$id,$res) = &decode_symb($symb);
3691: if ($map =~ /\.page$/) {
3692: $incourse = 1;
3693: if ($env{'form.forceedit'}) {
3694: $forceview = 1;
3695: $cfile = $map;
3696: } else {
3697: $forceedit = 1;
3698: $cfile = '/adm/wrapper'.$resurl;
3699: }
3700: }
3701: } elsif ($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3702: $incourse = 1;
3703: if ($env{'form.forceedit'}) {
3704: $forceview = 1;
3705: } else {
3706: $forceedit = 1;
3707: }
3708: $cfile = $resurl;
3709: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3710: $incourse = 1;
3711: if ($env{'form.forceedit'}) {
3712: $forceview = 1;
3713: } else {
3714: $forceedit = 1;
3715: }
3716: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3717: }
3718: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
3719: my $template = '/res/lib/templates/simpleproblem.problem';
3720: if (&is_on_map($template)) {
3721: $incourse = 1;
3722: $forceview = 1;
3723: $cfile = $template;
3724: }
3725: } elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3726: $incourse = 1;
3727: if ($env{'form.forceedit'}) {
3728: $forceview = 1;
3729: } else {
3730: $forceedit = 1;
3731: }
3732: $cfile = $resurl;
3733: } elsif (($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/ext\.tool$}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3734: $incourse = 1;
3735: if ($env{'form.forceedit'}) {
3736: $forceview = 1;
3737: } else {
3738: $forceedit = 1;
3739: }
3740: $cfile = $resurl;
3741: } elsif (($resurl eq '/adm/extresedit') && ($symb || $env{'form.folderpath'})) {
3742: $incourse = 1;
3743: $forceview = 1;
3744: if ($symb) {
3745: my ($map,$id,$res)=&decode_symb($symb);
3746: $env{'request.symb'} = $symb;
3747: $cfile = &clutter($res);
3748: } else {
3749: $cfile = $env{'form.suppurl'};
3750: my $escfile = &unescape($cfile);
3751: if ($escfile =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}) {
3752: $cfile = '/adm/wrapper'.$escfile;
3753: } else {
3754: $escfile =~ s{^http://}{};
3755: $cfile = &escape("/adm/wrapper/ext/$escfile");
3756: }
3757: }
3758: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3759: if ($env{'form.forceedit'}) {
3760: $forceview = 1;
3761: } else {
3762: $forceedit = 1;
3763: }
3764: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3765: }
3766: }
3767: if ($uploaded || $incourse) {
3768: $home=&homeserver($cnum,$cdom);
3769: } elsif ($file !~ m{/$}) {
3770: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
3771: $file=~s{^($match_domain/$match_username)}{/priv/$1};
3772: # Check that the user has permission to edit this resource
3773: my $setpriv = 1;
3774: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
3775: if (defined($cfudom)) {
3776: $home=&homeserver($cfuname,$cfudom);
3777: $cfile=$file;
3778: }
3779: }
3780: if (($cfile ne '') && (!$incourse || $uploaded) &&
3781: (($home ne '') && ($home ne 'no_host'))) {
3782: my @ids=¤t_machine_ids();
3783: unless (grep(/^\Q$home\E$/,@ids)) {
3784: $switchserver=1;
3785: }
3786: }
3787: }
3788: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3789: }
3790:
3791: sub is_course_upload {
3792: my ($file,$cnum,$cdom) = @_;
3793: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
3794: $uploadpath =~ s{^\/}{};
3795: if (($file =~ m{^\Q$uploadpath\E/userfiles/(docs|supplemental)/}) ||
3796: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/})) {
3797: return 1;
3798: }
3799: return;
3800: }
3801:
3802: sub in_course {
3803: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
3804: if ($hideprivileged) {
3805: my $skipuser;
3806: my %coursehash = &coursedescription($cdom.'_'.$cnum);
3807: my @possdoms = ($cdom);
3808: if ($coursehash{'checkforpriv'}) {
3809: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
3810: }
3811: if (&privileged($uname,$udom,\@possdoms)) {
3812: $skipuser = 1;
3813: if ($coursehash{'nothideprivileged'}) {
3814: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3815: my $user;
3816: if ($item =~ /:/) {
3817: $user = $item;
3818: } else {
3819: $user = join(':',split(/[\@]/,$item));
3820: }
3821: if ($user eq $uname.':'.$udom) {
3822: undef($skipuser);
3823: last;
3824: }
3825: }
3826: }
3827: if ($skipuser) {
3828: return 0;
3829: }
3830: }
3831: }
3832: $type ||= 'any';
3833: if (!defined($cdom) || !defined($cnum)) {
3834: my $cid = $env{'request.course.id'};
3835: $cdom = $env{'course.'.$cid.'.domain'};
3836: $cnum = $env{'course.'.$cid.'.num'};
3837: }
3838: my $typesref;
3839: if (($type eq 'any') || ($type eq 'all')) {
3840: $typesref = ['active','previous','future'];
3841: } elsif ($type eq 'previous' || $type eq 'future') {
3842: $typesref = [$type];
3843: }
3844: my %roles = &get_my_roles($uname,$udom,'userroles',
3845: $typesref,undef,[$cdom]);
3846: my ($tmp) = keys(%roles);
3847: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
3848: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
3849: if (@course_roles > 0) {
3850: return 1;
3851: }
3852: return 0;
3853: }
3854:
3855: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
3856: # input: action, courseID, current domain, intended
3857: # path to file, source of file, instruction to parse file for objects,
3858: # ref to hash for embedded objects,
3859: # ref to hash for codebase of java objects.
3860: # reference to scalar to accommodate mime type determined
3861: # from File::MMagic if $parser = parse.
3862: #
3863: # output: url to file (if action was uploaddoc),
3864: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
3865: #
3866: # Allows directory structure to be used within lonUsers/../userfiles/ for a
3867: # course.
3868: #
3869: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3870: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
3871: # course's home server.
3872: #
3873: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
3874: # be copied from $source (current location) to
3875: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3876: # and will then be copied to
3877: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
3878: # course's home server.
3879: #
3880: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3881: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
3882: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3883: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
3884: # in course's home server.
3885: #
3886:
3887: sub process_coursefile {
3888: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
3889: $mimetype)=@_;
3890: my $fetchresult;
3891: my $home=&homeserver($docuname,$docudom);
3892: if ($action eq 'propagate') {
3893: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3894: $home);
3895: } else {
3896: my $fpath = '';
3897: my $fname = $file;
3898: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3899: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3900: my $filepath = &build_filepath($fpath);
3901: if ($action eq 'copy') {
3902: if ($source eq '') {
3903: $fetchresult = 'no source file';
3904: return $fetchresult;
3905: } else {
3906: my $destination = $filepath.'/'.$fname;
3907: rename($source,$destination);
3908: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3909: $home);
3910: }
3911: } elsif ($action eq 'uploaddoc') {
3912: open(my $fh,'>',$filepath.'/'.$fname);
3913: print $fh $env{'form.'.$source};
3914: close($fh);
3915: if ($parser eq 'parse') {
3916: my $mm = new File::MMagic;
3917: my $type = $mm->checktype_filename($filepath.'/'.$fname);
3918: if ($type eq 'text/html') {
3919: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
3920: unless ($parse_result eq 'ok') {
3921: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
3922: }
3923: }
3924: if (ref($mimetype)) {
3925: $$mimetype = $type;
3926: }
3927: }
3928: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3929: $home);
3930: if ($fetchresult eq 'ok') {
3931: return '/uploaded/'.$fpath.'/'.$fname;
3932: } else {
3933: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3934: ' to host '.$home.': '.$fetchresult);
3935: return '/adm/notfound.html';
3936: }
3937: }
3938: }
3939: unless ( $fetchresult eq 'ok') {
3940: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3941: ' to host '.$home.': '.$fetchresult);
3942: }
3943: return $fetchresult;
3944: }
3945:
3946: sub build_filepath {
3947: my ($fpath) = @_;
3948: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
3949: unless ($fpath eq '') {
3950: my @parts=split('/',$fpath);
3951: foreach my $part (@parts) {
3952: $filepath.= '/'.$part;
3953: if ((-e $filepath)!=1) {
3954: mkdir($filepath,0777);
3955: }
3956: }
3957: }
3958: return $filepath;
3959: }
3960:
3961: sub store_edited_file {
3962: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
3963: my $file = $primary_url;
3964: $file =~ s#^/uploaded/$docudom/$docuname/##;
3965: my $fpath = '';
3966: my $fname = $file;
3967: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3968: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3969: my $filepath = &build_filepath($fpath);
3970: open(my $fh,'>',$filepath.'/'.$fname);
3971: print $fh $content;
3972: close($fh);
3973: my $home=&homeserver($docuname,$docudom);
3974: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3975: $home);
3976: if ($$fetchresult eq 'ok') {
3977: return '/uploaded/'.$fpath.'/'.$fname;
3978: } else {
3979: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3980: ' to host '.$home.': '.$$fetchresult);
3981: return '/adm/notfound.html';
3982: }
3983: }
3984:
3985: sub clean_filename {
3986: my ($fname,$args)=@_;
3987: # Replace Windows backslashes by forward slashes
3988: $fname=~s/\\/\//g;
3989: if (!$args->{'keep_path'}) {
3990: # Get rid of everything but the actual filename
3991: $fname=~s/^.*\/([^\/]+)$/$1/;
3992: }
3993: # Replace spaces by underscores
3994: $fname=~s/\s+/\_/g;
3995: # Transliterate non-ascii text to ascii
3996: my $lang = &Apache::lonlocal::current_language();
3997: $fname = &LONCAPA::transliterate::fname_to_ascii($fname,$lang);
3998: # Replace all other weird characters by nothing
3999: $fname=~s{[^/\w\.\-]}{}g;
4000: # Replace all .\d. sequences with _\d. so they no longer look like version
4001: # numbers
4002: $fname=~s/\.(\d+)(?=\.)/_$1/g;
4003: return $fname;
4004: }
4005:
4006: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
4007: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
4008: # image with the same aspect ratio as the original, but with dimensions which do
4009: # not exceed $resizewidth and $resizeheight.
4010:
4011: sub resizeImage {
4012: my ($img_path,$resizewidth,$resizeheight) = @_;
4013: my $ima = Image::Magick->new;
4014: my $resized;
4015: if (-e $img_path) {
4016: $ima->Read($img_path);
4017: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
4018: my $width = $ima->Get('width');
4019: my $height = $ima->Get('height');
4020: if ($width > $resizewidth) {
4021: my $factor = $width/$resizewidth;
4022: my $newheight = $height/$factor;
4023: $ima->Scale(width=>$resizewidth,height=>$newheight);
4024: $resized = 1;
4025: }
4026: }
4027: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
4028: my $width = $ima->Get('width');
4029: my $height = $ima->Get('height');
4030: if ($height > $resizeheight) {
4031: my $factor = $height/$resizeheight;
4032: my $newwidth = $width/$factor;
4033: $ima->Scale(width=>$newwidth,height=>$resizeheight);
4034: $resized = 1;
4035: }
4036: }
4037: if ($resized) {
4038: $ima->Write($img_path);
4039: }
4040: }
4041: return;
4042: }
4043:
4044: # --------------- Take an uploaded file and put it into the userfiles directory
4045: # input: $formname - the contents of the file are in $env{"form.$formname"}
4046: # the desired filename is in $env{"form.$formname.filename"}
4047: # $context - possible values: coursedoc, existingfile, overwrite,
4048: # canceloverwrite, scantron or ''.
4049: # if 'coursedoc': upload to the current course
4050: # if 'existingfile': write file to tmp/overwrites directory
4051: # if 'canceloverwrite': delete file written to tmp/overwrites directory
4052: # $context is passed as argument to &finishuserfileupload
4053: # $subdir - directory in userfile to store the file into
4054: # $parser - instruction to parse file for objects ($parser = parse) or
4055: # if context is 'scantron', $parser is hashref of csv column mapping
4056: # (e.g.,{ PaperID => 0, LastName => 1, FirstName => 2, ID => 3,
4057: # Section => 4, CODE => 5, FirstQuestion => 9 }).
4058: # $allfiles - reference to hash for embedded objects
4059: # $codebase - reference to hash for codebase of java objects
4060: # $desuname - username for permanent storage of uploaded file
4061: # $dsetudom - domain for permanaent storage of uploaded file
4062: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
4063: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
4064: # $resizewidth - width (pixels) to which to resize uploaded image
4065: # $resizeheight - height (pixels) to which to resize uploaded image
4066: # $mimetype - reference to scalar to accommodate mime type determined
4067: # from File::MMagic.
4068: #
4069: # output: url of file in userspace, or error: <message>
4070: # or /adm/notfound.html if failure to upload occurse
4071:
4072: sub userfileupload {
4073: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
4074: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
4075: if (!defined($subdir)) { $subdir='unknown'; }
4076: my $fname=$env{'form.'.$formname.'.filename'};
4077: $fname=&clean_filename($fname);
4078: # See if there is anything left
4079: unless ($fname) { return 'error: no uploaded file'; }
4080: # If filename now begins with a . prepend unix timestamp _ milliseconds
4081: if ($fname =~ /^\./) {
4082: my ($s,$usec) = &gettimeofday();
4083: while (length($usec) < 6) {
4084: $usec = '0'.$usec;
4085: }
4086: $fname = $s.'_'.substr($usec,0,3).$fname;
4087: }
4088: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
4089: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
4090: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
4091: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
4092: my $now = time;
4093: my $filepath;
4094: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
4095: $filepath = 'tmp/helprequests/'.$now;
4096: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
4097: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
4098: '_'.$env{'user.domain'}.'/pending';
4099: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
4100: my ($docuname,$docudom);
4101: if ($destudom =~ /^$match_domain$/) {
4102: $docudom = $destudom;
4103: } else {
4104: $docudom = $env{'user.domain'};
4105: }
4106: if ($destuname =~ /^$match_username$/) {
4107: $docuname = $destuname;
4108: } else {
4109: $docuname = $env{'user.name'};
4110: }
4111: if (exists($env{'form.group'})) {
4112: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4113: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4114: }
4115: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
4116: if ($context eq 'canceloverwrite') {
4117: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
4118: if (-e $tempfile) {
4119: my @info = stat($tempfile);
4120: if ($info[9] eq $env{'form.timestamp'}) {
4121: unlink($tempfile);
4122: }
4123: }
4124: return;
4125: }
4126: }
4127: # Create the directory if not present
4128: my @parts=split(/\//,$filepath);
4129: my $fullpath = $perlvar{'lonDaemons'};
4130: for (my $i=0;$i<@parts;$i++) {
4131: $fullpath .= '/'.$parts[$i];
4132: if ((-e $fullpath)!=1) {
4133: mkdir($fullpath,0777);
4134: }
4135: }
4136: open(my $fh,'>',$fullpath.'/'.$fname);
4137: print $fh $env{'form.'.$formname};
4138: close($fh);
4139: if ($context eq 'existingfile') {
4140: my @info = stat($fullpath.'/'.$fname);
4141: return ($fullpath.'/'.$fname,$info[9]);
4142: } else {
4143: return $fullpath.'/'.$fname;
4144: }
4145: }
4146: if ($subdir eq 'scantron') {
4147: $fname = 'scantron_orig_'.$fname;
4148: } else {
4149: $fname="$subdir/$fname";
4150: }
4151: if ($context eq 'coursedoc') {
4152: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4153: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4154: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
4155: return &finishuserfileupload($docuname,$docudom,
4156: $formname,$fname,$parser,$allfiles,
4157: $codebase,$thumbwidth,$thumbheight,
4158: $resizewidth,$resizeheight,$context,$mimetype);
4159: } else {
4160: if ($env{'form.folder'}) {
4161: $fname=$env{'form.folder'}.'/'.$fname;
4162: }
4163: return &process_coursefile('uploaddoc',$docuname,$docudom,
4164: $fname,$formname,$parser,
4165: $allfiles,$codebase,$mimetype);
4166: }
4167: } elsif (defined($destuname)) {
4168: my $docuname=$destuname;
4169: my $docudom=$destudom;
4170: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
4171: $parser,$allfiles,$codebase,
4172: $thumbwidth,$thumbheight,
4173: $resizewidth,$resizeheight,$context,$mimetype);
4174: } else {
4175: my $docuname=$env{'user.name'};
4176: my $docudom=$env{'user.domain'};
4177: if ((exists($env{'form.group'})) || ($context eq 'syllabus')) {
4178: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
4179: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4180: }
4181: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
4182: $parser,$allfiles,$codebase,
4183: $thumbwidth,$thumbheight,
4184: $resizewidth,$resizeheight,$context,$mimetype);
4185: }
4186: }
4187:
4188: sub finishuserfileupload {
4189: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
4190: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
4191: my $path=$docudom.'/'.$docuname.'/';
4192: my $filepath=$perlvar{'lonDocRoot'};
4193:
4194: my ($fnamepath,$file,$fetchthumb);
4195: $file=$fname;
4196: if ($fname=~m|/|) {
4197: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
4198: $path.=$fnamepath.'/';
4199: }
4200: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
4201: my $count;
4202: for ($count=4;$count<=$#parts;$count++) {
4203: $filepath.="/$parts[$count]";
4204: if ((-e $filepath)!=1) {
4205: mkdir($filepath,0777);
4206: }
4207: }
4208:
4209: # Save the file
4210: {
4211: if (!open(FH,'>',$filepath.'/'.$file)) {
4212: &logthis('Failed to create '.$filepath.'/'.$file);
4213: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
4214: return '/adm/notfound.html';
4215: }
4216: if ($context eq 'overwrite') {
4217: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
4218: my $target = $filepath.'/'.$file;
4219: if (-e $source) {
4220: my @info = stat($source);
4221: if ($info[9] eq $env{'form.timestamp'}) {
4222: unless (&File::Copy::move($source,$target)) {
4223: &logthis('Failed to overwrite '.$filepath.'/'.$file);
4224: return "Moving from $source failed";
4225: }
4226: } else {
4227: return "Temporary file: $source had unexpected date/time for last modification";
4228: }
4229: } else {
4230: return "Temporary file: $source missing";
4231: }
4232: } elsif (!print FH ($env{'form.'.$formname})) {
4233: &logthis('Failed to write to '.$filepath.'/'.$file);
4234: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
4235: return '/adm/notfound.html';
4236: }
4237: close(FH);
4238: if ($resizewidth && $resizeheight) {
4239: my $mm = new File::MMagic;
4240: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
4241: if ($mime_type =~ m{^image/}) {
4242: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
4243: }
4244: }
4245: }
4246: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
4247: if (ref($mimetype)) {
4248: if ($$mimetype eq '') {
4249: my $mm = new File::MMagic;
4250: my $type = $mm->checktype_filename($filepath.'/'.$file);
4251: $$mimetype = $type;
4252: }
4253: }
4254: }
4255: if (($context ne 'scantron') && ($parser eq 'parse')) {
4256: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
4257: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
4258: $allfiles,$codebase);
4259: unless ($parse_result eq 'ok') {
4260: &logthis('Failed to parse '.$filepath.$file.
4261: ' for embedded media: '.$parse_result);
4262: }
4263: }
4264: } elsif (($context eq 'scantron') && (ref($parser) eq 'HASH')) {
4265: my $format = $env{'form.scantron_format'};
4266: &bubblesheet_converter($docudom,$filepath.'/'.$file,$parser,$format);
4267: }
4268: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
4269: my $input = $filepath.'/'.$file;
4270: my $output = $filepath.'/'.'tn-'.$file;
4271: my $thumbsize = $thumbwidth.'x'.$thumbheight;
4272: my @args = ('convert','-sample',$thumbsize,$input,$output);
4273: system({$args[0]} @args);
4274: if (-e $filepath.'/'.'tn-'.$file) {
4275: $fetchthumb = 1;
4276: }
4277: }
4278:
4279: # Notify homeserver to grep it
4280: #
4281: my $docuhome=&homeserver($docuname,$docudom);
4282: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
4283: if ($fetchresult eq 'ok') {
4284: if ($fetchthumb) {
4285: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
4286: if ($thumbresult ne 'ok') {
4287: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
4288: $docuhome.': '.$thumbresult);
4289: }
4290: }
4291: #
4292: # Return the URL to it
4293: return '/uploaded/'.$path.$file;
4294: } else {
4295: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
4296: ': '.$fetchresult);
4297: return '/adm/notfound.html';
4298: }
4299: }
4300:
4301: sub extract_embedded_items {
4302: my ($fullpath,$allfiles,$codebase,$content) = @_;
4303: my @state = ();
4304: my (%lastids,%related,%shockwave,%flashvars);
4305: my %javafiles = (
4306: codebase => '',
4307: code => '',
4308: archive => ''
4309: );
4310: my %mediafiles = (
4311: src => '',
4312: movie => '',
4313: );
4314: my $p;
4315: if ($content) {
4316: $p = HTML::LCParser->new($content);
4317: } else {
4318: $p = HTML::LCParser->new($fullpath);
4319: }
4320: while (my $t=$p->get_token()) {
4321: if ($t->[0] eq 'S') {
4322: my ($tagname, $attr) = ($t->[1],$t->[2]);
4323: push(@state, $tagname);
4324: if (lc($tagname) eq 'allow') {
4325: &add_filetype($allfiles,$attr->{'src'},'src');
4326: }
4327: if (lc($tagname) eq 'img') {
4328: &add_filetype($allfiles,$attr->{'src'},'src');
4329: }
4330: if (lc($tagname) eq 'a') {
4331: unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) {
4332: &add_filetype($allfiles,$attr->{'href'},'href');
4333: }
4334: }
4335: if (lc($tagname) eq 'script') {
4336: my $src;
4337: if ($attr->{'archive'} =~ /\.jar$/i) {
4338: &add_filetype($allfiles,$attr->{'archive'},'archive');
4339: } else {
4340: if ($attr->{'src'} ne '') {
4341: $src = $attr->{'src'};
4342: &add_filetype($allfiles,$src,'src');
4343: }
4344: }
4345: my $text = $p->get_trimmed_text();
4346: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
4347: my @swfargs = split(/,/,$1);
4348: foreach my $item (@swfargs) {
4349: $item =~ s/["']//g;
4350: $item =~ s/^\s+//;
4351: $item =~ s/\s+$//;
4352: }
4353: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
4354: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
4355: push(@{$related{$swfargs[0]}},$swfargs[2]);
4356: } else {
4357: $related{$swfargs[0]} = [$swfargs[2]];
4358: }
4359: }
4360: }
4361: }
4362: if (lc($tagname) eq 'link') {
4363: if (lc($attr->{'rel'}) eq 'stylesheet') {
4364: &add_filetype($allfiles,$attr->{'href'},'href');
4365: }
4366: }
4367: if (lc($tagname) eq 'object' ||
4368: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
4369: foreach my $item (keys(%javafiles)) {
4370: $javafiles{$item} = '';
4371: }
4372: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
4373: $lastids{lc($tagname)} = $attr->{'id'};
4374: }
4375: }
4376: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
4377: my $name = lc($attr->{'name'});
4378: foreach my $item (keys(%javafiles)) {
4379: if ($name eq $item) {
4380: $javafiles{$item} = $attr->{'value'};
4381: last;
4382: }
4383: }
4384: my $pathfrom;
4385: foreach my $item (keys(%mediafiles)) {
4386: if ($name eq $item) {
4387: $pathfrom = $attr->{'value'};
4388: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
4389: &add_filetype($allfiles,$pathfrom,$name);
4390: last;
4391: }
4392: }
4393: if ($name eq 'flashvars') {
4394: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
4395: }
4396: if ($pathfrom ne '') {
4397: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
4398: $pathfrom);
4399: }
4400: }
4401: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
4402: foreach my $item (keys(%javafiles)) {
4403: if ($attr->{$item}) {
4404: $javafiles{$item} = $attr->{$item};
4405: last;
4406: }
4407: }
4408: foreach my $item (keys(%mediafiles)) {
4409: if ($attr->{$item}) {
4410: &add_filetype($allfiles,$attr->{$item},$item);
4411: last;
4412: }
4413: }
4414: if (lc($tagname) eq 'embed') {
4415: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
4416: &embedded_dependency($allfiles,\%related,$attr->{'name'},
4417: $attr->{'src'});
4418: }
4419: }
4420: }
4421: if (lc($tagname) eq 'iframe') {
4422: my $src = $attr->{'src'} ;
4423: if (($src ne '') && ($src !~ m{^(/|https?://)})) {
4424: &add_filetype($allfiles,$src,'src');
4425: } elsif ($src =~ m{^/}) {
4426: if ($env{'request.course.id'}) {
4427: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4428: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4429: my $url = &hreflocation('',$fullpath);
4430: if ($url =~ m{^/uploaded/$cdom/$cnum/docs/(\w+/\d+)/}) {
4431: my $relpath = $1;
4432: if ($src =~ m{^/uploaded/$cdom/$cnum/docs/\Q$relpath\E/(.+)$}) {
4433: &add_filetype($allfiles,$1,'src');
4434: }
4435: }
4436: }
4437: }
4438: }
4439: if ($t->[4] =~ m{/>$}) {
4440: pop(@state);
4441: }
4442: } elsif ($t->[0] eq 'E') {
4443: my ($tagname) = ($t->[1]);
4444: if ($javafiles{'codebase'} ne '') {
4445: $javafiles{'codebase'} .= '/';
4446: }
4447: if (lc($tagname) eq 'applet' ||
4448: lc($tagname) eq 'object' ||
4449: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
4450: ) {
4451: foreach my $item (keys(%javafiles)) {
4452: if ($item ne 'codebase' && $javafiles{$item} ne '') {
4453: my $file=$javafiles{'codebase'}.$javafiles{$item};
4454: &add_filetype($allfiles,$file,$item);
4455: }
4456: }
4457: }
4458: pop @state;
4459: }
4460: }
4461: foreach my $id (sort(keys(%flashvars))) {
4462: if ($shockwave{$id} ne '') {
4463: my @pairs = split(/\&/,$flashvars{$id});
4464: foreach my $pair (@pairs) {
4465: my ($key,$value) = split(/\=/,$pair);
4466: if ($key eq 'thumb') {
4467: &add_filetype($allfiles,$value,$key);
4468: } elsif ($key eq 'content') {
4469: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
4470: my ($ext) = ($value =~ /\.([^.]+)$/);
4471: if ($ext ne '') {
4472: &add_filetype($allfiles,$path.$value,$ext);
4473: }
4474: }
4475: }
4476: }
4477: }
4478: return 'ok';
4479: }
4480:
4481: sub add_filetype {
4482: my ($allfiles,$file,$type)=@_;
4483: if (exists($allfiles->{$file})) {
4484: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
4485: push(@{$allfiles->{$file}}, &escape($type));
4486: }
4487: } else {
4488: @{$allfiles->{$file}} = (&escape($type));
4489: }
4490: }
4491:
4492: sub embedded_dependency {
4493: my ($allfiles,$related,$identifier,$pathfrom) = @_;
4494: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
4495: if (($identifier ne '') &&
4496: (ref($related->{$identifier}) eq 'ARRAY') &&
4497: ($pathfrom ne '')) {
4498: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
4499: foreach my $dep (@{$related->{$identifier}}) {
4500: &add_filetype($allfiles,$path.$dep,'object');
4501: }
4502: }
4503: }
4504: return;
4505: }
4506:
4507: sub bubblesheet_converter {
4508: my ($cdom,$fullpath,$config,$format) = @_;
4509: if ((&domain($cdom) ne '') &&
4510: ($fullpath =~ m{^\Q$perlvar{'lonDocRoot'}/userfiles/$cdom/\E$match_courseid/scantron_orig}) &&
4511: (-e $fullpath) && (ref($config) eq 'HASH') && ($format ne '')) {
4512: my (%csvcols,%csvoptions);
4513: if (ref($config->{'fields'}) eq 'HASH') {
4514: %csvcols = %{$config->{'fields'}};
4515: }
4516: if (ref($config->{'options'}) eq 'HASH') {
4517: %csvoptions = %{$config->{'options'}};
4518: }
4519: my %csvbynum = reverse(%csvcols);
4520: my %scantronconf = &get_scantron_config($format,$cdom);
4521: if (keys(%scantronconf)) {
4522: my %bynum = (
4523: $scantronconf{CODEstart} => 'CODEstart',
4524: $scantronconf{IDstart} => 'IDstart',
4525: $scantronconf{PaperID} => 'PaperID',
4526: $scantronconf{FirstName} => 'FirstName',
4527: $scantronconf{LastName} => 'LastName',
4528: $scantronconf{Qstart} => 'Qstart',
4529: );
4530: my @ordered;
4531: foreach my $item (sort { $a <=> $b } keys(%bynum)) {
4532: push(@ordered,$bynum{$item});
4533: }
4534: my %mapstart = (
4535: CODEstart => 'CODE',
4536: IDstart => 'ID',
4537: PaperID => 'PaperID',
4538: FirstName => 'FirstName',
4539: LastName => 'LastName',
4540: Qstart => 'FirstQuestion',
4541: );
4542: my %maplength = (
4543: CODEstart => 'CODElength',
4544: IDstart => 'IDlength',
4545: PaperID => 'PaperIDlength',
4546: FirstName => 'FirstNamelength',
4547: LastName => 'LastNamelength',
4548: );
4549: if (open(my $fh,'<',$fullpath)) {
4550: my $output;
4551: my %lettdig = &letter_to_digits();
4552: my %diglett = reverse(%lettdig);
4553: my $numletts = scalar(keys(%lettdig));
4554: my $num = 0;
4555: while (my $line=<$fh>) {
4556: $num ++;
4557: next if (($num == 1) && ($csvoptions{'hdr'} == 1));
4558: $line =~ s{[\r\n]+$}{};
4559: my %found;
4560: my @values = split(/,/,$line);
4561: my ($qstart,$record);
4562: for (my $i=0; $i<@values; $i++) {
4563: if ((($qstart ne '') && ($i > $qstart)) ||
4564: ($csvbynum{$i} eq 'FirstQuestion')) {
4565: if ($values[$i] eq '') {
4566: $values[$i] = $scantronconf{'Qoff'};
4567: } elsif ($scantronconf{'Qon'} eq 'number') {
4568: if ($values[$i] =~ /^[A-Ja-j]$/) {
4569: $values[$i] = $lettdig{uc($values[$i])};
4570: }
4571: } elsif ($scantronconf{'Qon'} eq 'letter') {
4572: if ($values[$i] =~ /^[0-9]$/) {
4573: $values[$i] = $diglett{$values[$i]};
4574: }
4575: } else {
4576: if ($values[$i] =~ /^[0-9A-Ja-j]$/) {
4577: my $digit;
4578: if ($values[$i] =~ /^[A-Ja-j]$/) {
4579: $digit = $lettdig{uc($values[$i])}-1;
4580: if ($values[$i] eq 'J') {
4581: $digit += $numletts;
4582: }
4583: } elsif ($values[$i] =~ /^[0-9]$/) {
4584: $digit = $values[$i]-1;
4585: if ($values[$i] eq '0') {
4586: $digit += $numletts;
4587: }
4588: }
4589: my $qval='';
4590: for (my $j=0; $j<$scantronconf{'Qlength'}; $j++) {
4591: if ($j == $digit) {
4592: $qval .= $scantronconf{'Qon'};
4593: } else {
4594: $qval .= $scantronconf{'Qoff'};
4595: }
4596: }
4597: $values[$i] = $qval;
4598: }
4599: }
4600: if (length($values[$i]) > $scantronconf{'Qlength'}) {
4601: $values[$i] = substr($values[$i],0,$scantronconf{'Qlength'});
4602: }
4603: my $numblank = $scantronconf{'Qlength'} - length($values[$i]);
4604: if ($numblank > 0) {
4605: $values[$i] .= ($scantronconf{'Qoff'} x $numblank);
4606: }
4607: if ($csvbynum{$i} eq 'FirstQuestion') {
4608: $qstart = $i;
4609: $found{$csvbynum{$i}} = $values[$i];
4610: } else {
4611: $found{'FirstQuestion'} .= $values[$i];
4612: }
4613: } elsif (exists($csvbynum{$i})) {
4614: if ($csvoptions{'rem'}) {
4615: $values[$i] =~ s/^\s+//;
4616: }
4617: if (($csvbynum{$i} eq 'PaperID') && ($csvoptions{'pad'})) {
4618: while (length($values[$i]) < $scantronconf{$maplength{$csvbynum{$i}}}) {
4619: $values[$i] = '0'.$values[$i];
4620: }
4621: }
4622: $found{$csvbynum{$i}} = $values[$i];
4623: }
4624: }
4625: foreach my $item (@ordered) {
4626: my $currlength = 1+length($record);
4627: my $numspaces = $scantronconf{$item} - $currlength;
4628: if ($numspaces > 0) {
4629: $record .= (' ' x $numspaces);
4630: }
4631: if (($mapstart{$item} ne '') && (exists($found{$mapstart{$item}}))) {
4632: unless ($item eq 'Qstart') {
4633: if (length($found{$mapstart{$item}}) > $scantronconf{$maplength{$item}}) {
4634: $found{$mapstart{$item}} = substr($found{$mapstart{$item}},0,$scantronconf{$maplength{$item}});
4635: }
4636: }
4637: $record .= $found{$mapstart{$item}};
4638: }
4639: }
4640: $output .= "$record\n";
4641: }
4642: close($fh);
4643: if ($output) {
4644: if (open(my $fh,'>',$fullpath)) {
4645: print $fh $output;
4646: close($fh);
4647: }
4648: }
4649: }
4650: }
4651: return;
4652: }
4653: }
4654:
4655: sub letter_to_digits {
4656: my %lettdig = (
4657: A => 1,
4658: B => 2,
4659: C => 3,
4660: D => 4,
4661: E => 5,
4662: F => 6,
4663: G => 7,
4664: H => 8,
4665: I => 9,
4666: J => 0,
4667: );
4668: return %lettdig;
4669: }
4670:
4671: sub get_scantron_config {
4672: my ($which,$cdom) = @_;
4673: my @lines = &get_scantronformat_file($cdom);
4674: my %config;
4675: #FIXME probably should move to XML it has already gotten a bit much now
4676: foreach my $line (@lines) {
4677: my ($name,$descrip)=split(/:/,$line);
4678: if ($name ne $which ) { next; }
4679: chomp($line);
4680: my @config=split(/:/,$line);
4681: $config{'name'}=$config[0];
4682: $config{'description'}=$config[1];
4683: $config{'CODElocation'}=$config[2];
4684: $config{'CODEstart'}=$config[3];
4685: $config{'CODElength'}=$config[4];
4686: $config{'IDstart'}=$config[5];
4687: $config{'IDlength'}=$config[6];
4688: $config{'Qstart'}=$config[7];
4689: $config{'Qlength'}=$config[8];
4690: $config{'Qoff'}=$config[9];
4691: $config{'Qon'}=$config[10];
4692: $config{'PaperID'}=$config[11];
4693: $config{'PaperIDlength'}=$config[12];
4694: $config{'FirstName'}=$config[13];
4695: $config{'FirstNamelength'}=$config[14];
4696: $config{'LastName'}=$config[15];
4697: $config{'LastNamelength'}=$config[16];
4698: $config{'BubblesPerRow'}=$config[17];
4699: last;
4700: }
4701: return %config;
4702: }
4703:
4704: sub get_scantronformat_file {
4705: my ($cdom) = @_;
4706: if ($cdom eq '') {
4707: $cdom= $env{'course.'.$env{'request.course.id'}.'.domain'};
4708: }
4709: my %domconfig = &get_dom('configuration',['scantron'],$cdom);
4710: my $gottab = 0;
4711: my @lines;
4712: if (ref($domconfig{'scantron'}) eq 'HASH') {
4713: if ($domconfig{'scantron'}{'scantronformat'} ne '') {
4714: my $formatfile = &getfile($perlvar{'lonDocRoot'}.$domconfig{'scantron'}{'scantronformat'});
4715: if ($formatfile ne '-1') {
4716: @lines = split("\n",$formatfile,-1);
4717: $gottab = 1;
4718: }
4719: }
4720: }
4721: if (!$gottab) {
4722: my $confname = $cdom.'-domainconfig';
4723: my $default = $perlvar{'lonDocRoot'}.'/res/'.$cdom.'/'.$confname.'/default.tab';
4724: my $formatfile = &getfile($default);
4725: if ($formatfile ne '-1') {
4726: @lines = split("\n",$formatfile,-1);
4727: $gottab = 1;
4728: }
4729: }
4730: if (!$gottab) {
4731: my @domains = ¤t_machine_domains();
4732: if (grep(/^\Q$cdom\E$/,@domains)) {
4733: if (open(my $fh,'<',$perlvar{'lonTabDir'}.'/scantronformat.tab')) {
4734: @lines = <$fh>;
4735: close($fh);
4736: }
4737: } else {
4738: if (open(my $fh,'<',$perlvar{'lonTabDir'}.'/default_scantronformat.tab')) {
4739: @lines = <$fh>;
4740: close($fh);
4741: }
4742: }
4743: }
4744: return @lines;
4745: }
4746:
4747: sub removeuploadedurl {
4748: my ($url)=@_;
4749: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
4750: return &removeuserfile($uname,$udom,$fname);
4751: }
4752:
4753: sub removeuserfile {
4754: my ($docuname,$docudom,$fname)=@_;
4755: my $home=&homeserver($docuname,$docudom);
4756: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
4757: if ($result eq 'ok') {
4758: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
4759: my $metafile = $fname.'.meta';
4760: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
4761: my $url = "/uploaded/$docudom/$docuname/$fname";
4762: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
4763: my $sqlresult =
4764: &update_portfolio_table($docuname,$docudom,$file,
4765: 'portfolio_metadata',$group,
4766: 'delete');
4767: }
4768: }
4769: return $result;
4770: }
4771:
4772: sub mkdiruserfile {
4773: my ($docuname,$docudom,$dir)=@_;
4774: my $home=&homeserver($docuname,$docudom);
4775: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
4776: }
4777:
4778: sub renameuserfile {
4779: my ($docuname,$docudom,$old,$new)=@_;
4780: my $home=&homeserver($docuname,$docudom);
4781: my $result = &reply("renameuserfile:$docudom:$docuname:".
4782: &escape("$old").':'.&escape("$new"),$home);
4783: if ($result eq 'ok') {
4784: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
4785: my $oldmeta = $old.'.meta';
4786: my $newmeta = $new.'.meta';
4787: my $metaresult =
4788: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
4789: my $url = "/uploaded/$docudom/$docuname/$old";
4790: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
4791: my $sqlresult =
4792: &update_portfolio_table($docuname,$docudom,$file,
4793: 'portfolio_metadata',$group,
4794: 'delete');
4795: }
4796: }
4797: return $result;
4798: }
4799:
4800: # ------------------------------------------------------------------------- Log
4801:
4802: sub log {
4803: my ($dom,$nam,$hom,$what)=@_;
4804: return critical("log:$dom:$nam:$what",$hom);
4805: }
4806:
4807: # ------------------------------------------------------------------ Course Log
4808: #
4809: # This routine flushes several buffers of non-mission-critical nature
4810: #
4811:
4812: sub flushcourselogs {
4813: &logthis('Flushing log buffers');
4814: #
4815: # course logs
4816: # This is a log of all transactions in a course, which can be used
4817: # for data mining purposes
4818: #
4819: # It also collects the courseid database, which lists last transaction
4820: # times and course titles for all courseids
4821: #
4822: my %courseidbuffer=();
4823: foreach my $crsid (keys(%courselogs)) {
4824: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
4825: &escape($courselogs{$crsid}),
4826: $coursehombuf{$crsid}) eq 'ok') {
4827: delete $courselogs{$crsid};
4828: } else {
4829: &logthis('Failed to flush log buffer for '.$crsid);
4830: if (length($courselogs{$crsid})>40000) {
4831: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
4832: " exceeded maximum size, deleting.</font>");
4833: delete $courselogs{$crsid};
4834: }
4835: }
4836: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
4837: 'description' => $coursedescrbuf{$crsid},
4838: 'inst_code' => $courseinstcodebuf{$crsid},
4839: 'type' => $coursetypebuf{$crsid},
4840: 'owner' => $courseownerbuf{$crsid},
4841: };
4842: }
4843: #
4844: # Write course id database (reverse lookup) to homeserver of courses
4845: # Is used in pickcourse
4846: #
4847: foreach my $crs_home (keys(%courseidbuffer)) {
4848: my $response = &courseidput(&host_domain($crs_home),
4849: $courseidbuffer{$crs_home},
4850: $crs_home,'timeonly');
4851: }
4852: #
4853: # File accesses
4854: # Writes to the dynamic metadata of resources to get hit counts, etc.
4855: #
4856: foreach my $entry (keys(%accesshash)) {
4857: if ($entry =~ /___count$/) {
4858: my ($dom,$name);
4859: ($dom,$name,undef)=
4860: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
4861: if (! defined($dom) || $dom eq '' ||
4862: ! defined($name) || $name eq '') {
4863: my $cid = $env{'request.course.id'};
4864: $dom = $env{'request.'.$cid.'.domain'};
4865: $name = $env{'request.'.$cid.'.num'};
4866: }
4867: my $value = $accesshash{$entry};
4868: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
4869: my %temphash=($url => $value);
4870: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
4871: if ($result eq 'ok') {
4872: delete $accesshash{$entry};
4873: }
4874: } else {
4875: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
4876: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
4877: my %temphash=($entry => $accesshash{$entry});
4878: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
4879: delete $accesshash{$entry};
4880: }
4881: }
4882: }
4883: #
4884: # Roles
4885: # Reverse lookup of user roles for course faculty/staff and co-authorship
4886: #
4887: foreach my $entry (keys(%userrolehash)) {
4888: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
4889: split(/\:/,$entry);
4890: if (&Apache::lonnet::put('nohist_userroles',
4891: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
4892: $rudom,$runame) eq 'ok') {
4893: delete $userrolehash{$entry};
4894: }
4895: }
4896: #
4897: # Reverse lookup of domain roles (dc, ad, li, sc, dh, da, au)
4898: #
4899: my %domrolebuffer = ();
4900: foreach my $entry (keys(%domainrolehash)) {
4901: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
4902: if ($domrolebuffer{$rudom}) {
4903: $domrolebuffer{$rudom}.='&'.&escape($entry).
4904: '='.&escape($domainrolehash{$entry});
4905: } else {
4906: $domrolebuffer{$rudom}.=&escape($entry).
4907: '='.&escape($domainrolehash{$entry});
4908: }
4909: delete $domainrolehash{$entry};
4910: }
4911: foreach my $dom (keys(%domrolebuffer)) {
4912: my %servers;
4913: if (defined(&domain($dom,'primary'))) {
4914: my $primary=&domain($dom,'primary');
4915: my $hostname=&hostname($primary);
4916: $servers{$primary} = $hostname;
4917: } else {
4918: %servers = &get_servers($dom,'library');
4919: }
4920: foreach my $tryserver (keys(%servers)) {
4921: if (&reply('domroleput:'.$dom.':'.
4922: $domrolebuffer{$dom},$tryserver) eq 'ok') {
4923: last;
4924: } else {
4925: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
4926: }
4927: }
4928: }
4929: $dumpcount++;
4930: }
4931:
4932: sub courselog {
4933: my $what=shift;
4934: $what=time.':'.$what;
4935: unless ($env{'request.course.id'}) { return ''; }
4936: $coursedombuf{$env{'request.course.id'}}=
4937: $env{'course.'.$env{'request.course.id'}.'.domain'};
4938: $coursenumbuf{$env{'request.course.id'}}=
4939: $env{'course.'.$env{'request.course.id'}.'.num'};
4940: $coursehombuf{$env{'request.course.id'}}=
4941: $env{'course.'.$env{'request.course.id'}.'.home'};
4942: $coursedescrbuf{$env{'request.course.id'}}=
4943: $env{'course.'.$env{'request.course.id'}.'.description'};
4944: $courseinstcodebuf{$env{'request.course.id'}}=
4945: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
4946: $courseownerbuf{$env{'request.course.id'}}=
4947: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
4948: $coursetypebuf{$env{'request.course.id'}}=
4949: $env{'course.'.$env{'request.course.id'}.'.type'};
4950: if (defined $courselogs{$env{'request.course.id'}}) {
4951: $courselogs{$env{'request.course.id'}}.='&'.$what;
4952: } else {
4953: $courselogs{$env{'request.course.id'}}.=$what;
4954: }
4955: if (length($courselogs{$env{'request.course.id'}})>4048) {
4956: &flushcourselogs();
4957: }
4958: }
4959:
4960: sub courseacclog {
4961: my $fnsymb=shift;
4962: unless ($env{'request.course.id'}) { return ''; }
4963: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
4964: if ($fnsymb=~/$LONCAPA::assess_re/) {
4965: $what.=':POST';
4966: # FIXME: Probably ought to escape things....
4967: foreach my $key (keys(%env)) {
4968: if ($key=~/^form\.(.*)/) {
4969: my $formitem = $1;
4970: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
4971: $what.=':'.$formitem.'='.$env{$key};
4972: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
4973: $what.=':'.$formitem.'='.$env{$key};
4974: }
4975: }
4976: }
4977: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
4978: # FIXME: We should not be depending on a form parameter that someone
4979: # editing lonsearchcat.pm might change in the future.
4980: if ($env{'form.phase'} eq 'course_search') {
4981: $what.= ':POST';
4982: # FIXME: Probably ought to escape things....
4983: foreach my $element ('courseexp','crsfulltext','crsrelated',
4984: 'crsdiscuss') {
4985: $what.=':'.$element.'='.$env{'form.'.$element};
4986: }
4987: }
4988: }
4989: &courselog($what);
4990: }
4991:
4992: sub countacc {
4993: my $url=&declutter(shift);
4994: return if (! defined($url) || $url eq '');
4995: unless ($env{'request.course.id'}) { return ''; }
4996: #
4997: # Mark that this url was used in this course
4998: #
4999: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
5000: #
5001: # Increase the access count for this resource in this child process
5002: #
5003: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
5004: $accesshash{$key}++;
5005: }
5006:
5007: sub linklog {
5008: my ($from,$to)=@_;
5009: $from=&declutter($from);
5010: $to=&declutter($to);
5011: $accesshash{$from.'___'.$to.'___comefrom'}=1;
5012: $accesshash{$to.'___'.$from.'___goto'}=1;
5013: }
5014:
5015: sub statslog {
5016: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
5017: if ($users<2) { return; }
5018: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
5019: 'course' => $env{'request.course.id'},
5020: 'sections' => '"all"',
5021: 'num_students' => $users,
5022: 'part' => $part,
5023: 'symb' => $symb,
5024: 'mean_tries' => $av_attempts,
5025: 'deg_of_diff' => $degdiff});
5026: foreach my $key (keys(%dynstore)) {
5027: $accesshash{$key}=$dynstore{$key};
5028: }
5029: }
5030:
5031: sub userrolelog {
5032: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
5033: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
5034: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
5035: $userrolehash
5036: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
5037: =$tend.':'.$tstart;
5038: }
5039: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
5040: $userrolehash
5041: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
5042: =$tend.':'.$tstart;
5043: }
5044: if ($trole =~ /^(dc|ad|li|au|dg|sc|dh|da)/ ) {
5045: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
5046: $domainrolehash
5047: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
5048: = $tend.':'.$tstart;
5049: }
5050: }
5051:
5052: sub courserolelog {
5053: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
5054: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
5055: my $cdom = $1;
5056: my $cnum = $2;
5057: my $sec = $3;
5058: my $namespace = 'rolelog';
5059: my %storehash = (
5060: role => $trole,
5061: start => $tstart,
5062: end => $tend,
5063: selfenroll => $selfenroll,
5064: context => $context,
5065: );
5066: if ($trole eq 'gr') {
5067: $namespace = 'groupslog';
5068: $storehash{'group'} = $sec;
5069: } else {
5070: $storehash{'section'} = $sec;
5071: }
5072: &write_log('course',$namespace,\%storehash,$delflag,$username,
5073: $domain,$cnum,$cdom);
5074: if (($trole ne 'st') || ($sec ne '')) {
5075: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
5076: }
5077: }
5078: return;
5079: }
5080:
5081: sub domainrolelog {
5082: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
5083: if ($area =~ m{^/($match_domain)/$}) {
5084: my $cdom = $1;
5085: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
5086: my $namespace = 'rolelog';
5087: my %storehash = (
5088: role => $trole,
5089: start => $tstart,
5090: end => $tend,
5091: context => $context,
5092: );
5093: &write_log('domain',$namespace,\%storehash,$delflag,$username,
5094: $domain,$domconfiguser,$cdom);
5095: }
5096: return;
5097:
5098: }
5099:
5100: sub coauthorrolelog {
5101: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
5102: if ($area =~ m{^/($match_domain)/($match_username)$}) {
5103: my $audom = $1;
5104: my $auname = $2;
5105: my $namespace = 'rolelog';
5106: my %storehash = (
5107: role => $trole,
5108: start => $tstart,
5109: end => $tend,
5110: context => $context,
5111: );
5112: &write_log('author',$namespace,\%storehash,$delflag,$username,
5113: $domain,$auname,$audom);
5114: }
5115: return;
5116: }
5117:
5118: sub get_course_adv_roles {
5119: my ($cid,$codes) = @_;
5120: $cid=$env{'request.course.id'} unless (defined($cid));
5121: my %coursehash=&coursedescription($cid);
5122: my $crstype = &Apache::loncommon::course_type($cid);
5123: my %nothide=();
5124: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
5125: if ($user !~ /:/) {
5126: $nothide{join(':',split(/[\@]/,$user))}=1;
5127: } else {
5128: $nothide{$user}=1;
5129: }
5130: }
5131: my @possdoms = ($coursehash{'domain'});
5132: if ($coursehash{'checkforpriv'}) {
5133: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
5134: }
5135: my %returnhash=();
5136: my %dumphash=
5137: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
5138: my $now=time;
5139: my %privileged;
5140: foreach my $entry (keys(%dumphash)) {
5141: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
5142: if (($tstart) && ($tstart<0)) { next; }
5143: if (($tend) && ($tend<$now)) { next; }
5144: if (($tstart) && ($now<$tstart)) { next; }
5145: my ($role,$username,$domain,$section)=split(/\:/,$entry);
5146: if ($username eq '' || $domain eq '') { next; }
5147: if ((&privileged($username,$domain,\@possdoms)) &&
5148: (!$nothide{$username.':'.$domain})) { next; }
5149: if ($role eq 'cr') { next; }
5150: if ($codes) {
5151: if ($section) { $role .= ':'.$section; }
5152: if ($returnhash{$role}) {
5153: $returnhash{$role}.=','.$username.':'.$domain;
5154: } else {
5155: $returnhash{$role}=$username.':'.$domain;
5156: }
5157: } else {
5158: my $key=&plaintext($role,$crstype);
5159: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
5160: if ($returnhash{$key}) {
5161: $returnhash{$key}.=','.$username.':'.$domain;
5162: } else {
5163: $returnhash{$key}=$username.':'.$domain;
5164: }
5165: }
5166: }
5167: return %returnhash;
5168: }
5169:
5170: sub get_my_roles {
5171: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
5172: unless (defined($uname)) { $uname=$env{'user.name'}; }
5173: unless (defined($udom)) { $udom=$env{'user.domain'}; }
5174: my (%dumphash,%nothide);
5175: if ($context eq 'userroles') {
5176: %dumphash = &dump('roles',$udom,$uname);
5177: } else {
5178: %dumphash = &dump('nohist_userroles',$udom,$uname);
5179: if ($hidepriv) {
5180: my %coursehash=&coursedescription($udom.'_'.$uname);
5181: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
5182: if ($user !~ /:/) {
5183: $nothide{join(':',split(/[\@]/,$user))} = 1;
5184: } else {
5185: $nothide{$user} = 1;
5186: }
5187: }
5188: }
5189: }
5190: my %returnhash=();
5191: my $now=time;
5192: my %privileged;
5193: foreach my $entry (keys(%dumphash)) {
5194: my ($role,$tend,$tstart);
5195: if ($context eq 'userroles') {
5196: next if ($entry =~ /^rolesdef/);
5197: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
5198: } else {
5199: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
5200: }
5201: if (($tstart) && ($tstart<0)) { next; }
5202: my $status = 'active';
5203: if (($tend) && ($tend<=$now)) {
5204: $status = 'previous';
5205: }
5206: if (($tstart) && ($now<$tstart)) {
5207: $status = 'future';
5208: }
5209: if (ref($types) eq 'ARRAY') {
5210: if (!grep(/^\Q$status\E$/,@{$types})) {
5211: next;
5212: }
5213: } else {
5214: if ($status ne 'active') {
5215: next;
5216: }
5217: }
5218: my ($rolecode,$username,$domain,$section,$area);
5219: if ($context eq 'userroles') {
5220: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
5221: (undef,$domain,$username,$section) = split(/\//,$area);
5222: } else {
5223: ($role,$username,$domain,$section) = split(/\:/,$entry);
5224: }
5225: if (ref($roledoms) eq 'ARRAY') {
5226: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
5227: next;
5228: }
5229: }
5230: if (ref($roles) eq 'ARRAY') {
5231: if (!grep(/^\Q$role\E$/,@{$roles})) {
5232: if ($role =~ /^cr\//) {
5233: if (!grep(/^cr$/,@{$roles})) {
5234: next;
5235: }
5236: } elsif ($role =~ /^gr\//) {
5237: if (!grep(/^gr$/,@{$roles})) {
5238: next;
5239: }
5240: } else {
5241: next;
5242: }
5243: }
5244: }
5245: if ($hidepriv) {
5246: my @privroles = ('dc','su');
5247: if ($context eq 'userroles') {
5248: next if (grep(/^\Q$role\E$/,@privroles));
5249: } else {
5250: my $possdoms = [$domain];
5251: if (ref($roledoms) eq 'ARRAY') {
5252: push(@{$possdoms},@{$roledoms});
5253: }
5254: if (&privileged($username,$domain,$possdoms,\@privroles)) {
5255: if (!$nothide{$username.':'.$domain}) {
5256: next;
5257: }
5258: }
5259: }
5260: }
5261: if ($withsec) {
5262: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
5263: $tstart.':'.$tend;
5264: } else {
5265: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
5266: }
5267: }
5268: return %returnhash;
5269: }
5270:
5271: sub get_all_adhocroles {
5272: my ($dom) = @_;
5273: my @roles_by_num = ();
5274: my %domdefaults = &get_domain_defaults($dom);
5275: my (%description,%access_in_dom,%access_info);
5276: if (ref($domdefaults{'adhocroles'}) eq 'HASH') {
5277: my $count = 0;
5278: my %domcurrent = %{$domdefaults{'adhocroles'}};
5279: my %ordered;
5280: foreach my $role (sort(keys(%domcurrent))) {
5281: my ($order,$desc,$access_in_dom);
5282: if (ref($domcurrent{$role}) eq 'HASH') {
5283: $order = $domcurrent{$role}{'order'};
5284: $desc = $domcurrent{$role}{'desc'};
5285: $access_in_dom{$role} = $domcurrent{$role}{'access'};
5286: $access_info{$role} = $domcurrent{$role}{$access_in_dom{$role}};
5287: }
5288: if ($order eq '') {
5289: $order = $count;
5290: }
5291: $ordered{$order} = $role;
5292: if ($desc ne '') {
5293: $description{$role} = $desc;
5294: } else {
5295: $description{$role}= $role;
5296: }
5297: $count++;
5298: }
5299: foreach my $item (sort {$a <=> $b } (keys(%ordered))) {
5300: push(@roles_by_num,$ordered{$item});
5301: }
5302: }
5303: return (\@roles_by_num,\%description,\%access_in_dom,\%access_info);
5304: }
5305:
5306: sub get_my_adhocroles {
5307: my ($cid,$checkreg) = @_;
5308: my ($cdom,$cnum,%info,@possroles,$description,$roles_by_num);
5309: if ($env{'request.course.id'} eq $cid) {
5310: $cdom = $env{'course.'.$cid.'.domain'};
5311: $cnum = $env{'course.'.$cid.'.num'};
5312: $info{'internal.coursecode'} = $env{'course.'.$cid.'.internal.coursecode'};
5313: } elsif ($cid =~ /^($match_domain)_($match_courseid)$/) {
5314: $cdom = $1;
5315: $cnum = $2;
5316: %info = &Apache::lonnet::get('environment',['internal.coursecode'],
5317: $cdom,$cnum);
5318: }
5319: if (($info{'internal.coursecode'} ne '') && ($checkreg)) {
5320: my $user = $env{'user.name'}.':'.$env{'user.domain'};
5321: my %rosterhash = &get('classlist',[$user],$cdom,$cnum);
5322: if ($rosterhash{$user} ne '') {
5323: my $type = (split(/:/,$rosterhash{$user}))[5];
5324: return ([],{}) if ($type eq 'auto');
5325: }
5326: }
5327: if (($cdom ne '') && ($cnum ne '')) {
5328: if (($env{"user.role.dh./$cdom/"}) || ($env{"user.role.da./$cdom/"})) {
5329: my $then=$env{'user.login.time'};
5330: my $update=$env{'user.update.time'};
5331: if (!$update) {
5332: $update = $then;
5333: }
5334: my @liveroles;
5335: foreach my $role ('dh','da') {
5336: if ($env{"user.role.$role./$cdom/"}) {
5337: my ($tstart,$tend)=split(/\./,$env{"user.role.$role./$cdom/"});
5338: my $limit = $update;
5339: if ($env{'request.role'} eq "$role./$cdom/") {
5340: $limit = $then;
5341: }
5342: my $activerole = 1;
5343: if ($tstart && $tstart>$limit) { $activerole = 0; }
5344: if ($tend && $tend <$limit) { $activerole = 0; }
5345: if ($activerole) {
5346: push(@liveroles,$role);
5347: }
5348: }
5349: }
5350: if (@liveroles) {
5351: if (&homeserver($cnum,$cdom) ne 'no_host') {
5352: my ($accessref,$accessinfo,%access_in_dom);
5353: ($roles_by_num,$description,$accessref,$accessinfo) = &get_all_adhocroles($cdom);
5354: if (ref($roles_by_num) eq 'ARRAY') {
5355: if (@{$roles_by_num}) {
5356: my %settings;
5357: if ($env{'request.course.id'} eq $cid) {
5358: foreach my $envkey (keys(%env)) {
5359: if ($envkey =~ /^\Qcourse.$cid.\E(internal\.adhoc.+)$/) {
5360: $settings{$1} = $env{$envkey};
5361: }
5362: }
5363: } else {
5364: %settings = &dump('environment',$cdom,$cnum,'internal\.adhoc');
5365: }
5366: my %setincrs;
5367: if ($settings{'internal.adhocaccess'}) {
5368: map { $setincrs{$_} = 1; } split(/,/,$settings{'internal.adhocaccess'});
5369: }
5370: my @statuses;
5371: if ($env{'environment.inststatus'}) {
5372: @statuses = split(/,/,$env{'environment.inststatus'});
5373: }
5374: my $user = $env{'user.name'}.':'.$env{'user.domain'};
5375: if (ref($accessref) eq 'HASH') {
5376: %access_in_dom = %{$accessref};
5377: }
5378: foreach my $role (@{$roles_by_num}) {
5379: my ($curraccess,@okstatus,@personnel);
5380: if ($setincrs{$role}) {
5381: ($curraccess,my $rest) = split(/=/,$settings{'internal.adhoc.'.$role});
5382: if ($curraccess eq 'status') {
5383: @okstatus = split(/\&/,$rest);
5384: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5385: @personnel = split(/\&/,$rest);
5386: }
5387: } else {
5388: $curraccess = $access_in_dom{$role};
5389: if (ref($accessinfo) eq 'HASH') {
5390: if ($curraccess eq 'status') {
5391: if (ref($accessinfo->{$role}) eq 'ARRAY') {
5392: @okstatus = @{$accessinfo->{$role}};
5393: }
5394: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5395: if (ref($accessinfo->{$role}) eq 'ARRAY') {
5396: @personnel = @{$accessinfo->{$role}};
5397: }
5398: }
5399: }
5400: }
5401: if ($curraccess eq 'none') {
5402: next;
5403: } elsif ($curraccess eq 'all') {
5404: push(@possroles,$role);
5405: } elsif ($curraccess eq 'dh') {
5406: if (grep(/^dh$/,@liveroles)) {
5407: push(@possroles,$role);
5408: } else {
5409: next;
5410: }
5411: } elsif ($curraccess eq 'da') {
5412: if (grep(/^da$/,@liveroles)) {
5413: push(@possroles,$role);
5414: } else {
5415: next;
5416: }
5417: } elsif ($curraccess eq 'status') {
5418: if (@okstatus) {
5419: if (!@statuses) {
5420: if (grep(/^default$/,@okstatus)) {
5421: push(@possroles,$role);
5422: }
5423: } else {
5424: foreach my $status (@okstatus) {
5425: if (grep(/^\Q$status\E$/,@statuses)) {
5426: push(@possroles,$role);
5427: last;
5428: }
5429: }
5430: }
5431: }
5432: } elsif (($curraccess eq 'exc') || ($curraccess eq 'inc')) {
5433: if (grep(/^\Q$user\E$/,@personnel)) {
5434: if ($curraccess eq 'exc') {
5435: push(@possroles,$role);
5436: }
5437: } elsif ($curraccess eq 'inc') {
5438: push(@possroles,$role);
5439: }
5440: }
5441: }
5442: }
5443: }
5444: }
5445: }
5446: }
5447: }
5448: unless (ref($description) eq 'HASH') {
5449: if (ref($roles_by_num) eq 'ARRAY') {
5450: my %desc;
5451: map { $desc{$_} = $_; } (@{$roles_by_num});
5452: $description = \%desc;
5453: } else {
5454: $description = {};
5455: }
5456: }
5457: return (\@possroles,$description);
5458: }
5459:
5460: # ----------------------------------------------------- Frontpage Announcements
5461: #
5462: #
5463:
5464: sub postannounce {
5465: my ($server,$text)=@_;
5466: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
5467: unless ($text=~/\w/) { $text=''; }
5468: return &reply('setannounce:'.&escape($text),$server);
5469: }
5470:
5471: sub getannounce {
5472:
5473: if (open(my $fh,"<",$perlvar{'lonDocRoot'}.'/announcement.txt')) {
5474: my $announcement='';
5475: while (my $line = <$fh>) { $announcement .= $line; }
5476: close($fh);
5477: if ($announcement=~/\w/) {
5478: return
5479: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
5480: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
5481: } else {
5482: return '';
5483: }
5484: } else {
5485: return '';
5486: }
5487: }
5488:
5489: # ---------------------------------------------------------- Course ID routines
5490: # Deal with domain's nohist_courseid.db files
5491: #
5492:
5493: sub courseidput {
5494: my ($domain,$storehash,$coursehome,$caller) = @_;
5495: return unless (ref($storehash) eq 'HASH');
5496: my $outcome;
5497: if ($caller eq 'timeonly') {
5498: my $cids = '';
5499: foreach my $item (keys(%$storehash)) {
5500: $cids.=&escape($item).'&';
5501: }
5502: $cids=~s/\&$//;
5503: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
5504: $coursehome);
5505: } else {
5506: my $items = '';
5507: foreach my $item (keys(%$storehash)) {
5508: $items.= &escape($item).'='.
5509: &freeze_escape($$storehash{$item}).'&';
5510: }
5511: $items=~s/\&$//;
5512: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
5513: $coursehome);
5514: }
5515: if ($outcome eq 'unknown_cmd') {
5516: my $what;
5517: foreach my $cid (keys(%$storehash)) {
5518: $what .= &escape($cid).'=';
5519: foreach my $item ('description','inst_code','owner','type') {
5520: $what .= &escape($storehash->{$cid}{$item}).':';
5521: }
5522: $what =~ s/\:$/&/;
5523: }
5524: $what =~ s/\&$//;
5525: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
5526: } else {
5527: return $outcome;
5528: }
5529: }
5530:
5531: sub courseiddump {
5532: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
5533: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
5534: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
5535: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner,
5536: $hasuniquecode,$reqcrsdom,$reqinstcode)=@_;
5537: my $as_hash = 1;
5538: my %returnhash;
5539: if (!$domfilter) { $domfilter=''; }
5540: my %libserv = &all_library();
5541: foreach my $tryserver (keys(%libserv)) {
5542: if ( ( $hostidflag == 1
5543: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
5544: || (!defined($hostidflag)) ) {
5545:
5546: if (($domfilter eq '') ||
5547: (&host_domain($tryserver) eq $domfilter)) {
5548: my $rep;
5549: if (grep { $_ eq $tryserver } current_machine_ids()) {
5550: $rep = LONCAPA::Lond::dump_course_id_handler(
5551: join(":", (&host_domain($tryserver), $sincefilter,
5552: &escape($descfilter), &escape($instcodefilter),
5553: &escape($ownerfilter), &escape($coursefilter),
5554: &escape($typefilter), &escape($regexp_ok),
5555: $as_hash, &escape($selfenrollonly),
5556: &escape($catfilter), $showhidden, $caller,
5557: &escape($cloner), &escape($cc_clone), $cloneonly,
5558: &escape($createdbefore), &escape($createdafter),
5559: &escape($creationcontext),$domcloner,$hasuniquecode,
5560: $reqcrsdom,&escape($reqinstcode))));
5561: } else {
5562: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
5563: $sincefilter.':'.&escape($descfilter).':'.
5564: &escape($instcodefilter).':'.&escape($ownerfilter).
5565: ':'.&escape($coursefilter).':'.&escape($typefilter).
5566: ':'.&escape($regexp_ok).':'.$as_hash.':'.
5567: &escape($selfenrollonly).':'.&escape($catfilter).':'.
5568: $showhidden.':'.$caller.':'.&escape($cloner).':'.
5569: &escape($cc_clone).':'.$cloneonly.':'.
5570: &escape($createdbefore).':'.&escape($createdafter).':'.
5571: &escape($creationcontext).':'.$domcloner.':'.$hasuniquecode.
5572: ':'.$reqcrsdom.':'.&escape($reqinstcode),$tryserver);
5573: }
5574:
5575: my @pairs=split(/\&/,$rep);
5576: foreach my $item (@pairs) {
5577: my ($key,$value)=split(/\=/,$item,2);
5578: $key = &unescape($key);
5579: next if ($key =~ /^error: 2 /);
5580: my $result = &thaw_unescape($value);
5581: if (ref($result) eq 'HASH') {
5582: $returnhash{$key}=$result;
5583: } else {
5584: my @responses = split(/:/,$value);
5585: my @items = ('description','inst_code','owner','type');
5586: for (my $i=0; $i<@responses; $i++) {
5587: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
5588: }
5589: }
5590: }
5591: }
5592: }
5593: }
5594: return %returnhash;
5595: }
5596:
5597: sub courselastaccess {
5598: my ($cdom,$cnum,$hostidref) = @_;
5599: my %returnhash;
5600: if ($cdom && $cnum) {
5601: my $chome = &homeserver($cnum,$cdom);
5602: if ($chome ne 'no_host') {
5603: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
5604: &extract_lastaccess(\%returnhash,$rep);
5605: }
5606: } else {
5607: if (!$cdom) { $cdom=''; }
5608: my %libserv = &all_library();
5609: foreach my $tryserver (keys(%libserv)) {
5610: if (ref($hostidref) eq 'ARRAY') {
5611: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
5612: }
5613: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
5614: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
5615: &extract_lastaccess(\%returnhash,$rep);
5616: }
5617: }
5618: }
5619: return %returnhash;
5620: }
5621:
5622: sub extract_lastaccess {
5623: my ($returnhash,$rep) = @_;
5624: if (ref($returnhash) eq 'HASH') {
5625: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
5626: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
5627: $rep eq '') {
5628: my @pairs=split(/\&/,$rep);
5629: foreach my $item (@pairs) {
5630: my ($key,$value)=split(/\=/,$item,2);
5631: $key = &unescape($key);
5632: next if ($key =~ /^error: 2 /);
5633: $returnhash->{$key} = &thaw_unescape($value);
5634: }
5635: }
5636: }
5637: return;
5638: }
5639:
5640: # ---------------------------------------------------------- DC e-mail
5641:
5642: sub dcmailput {
5643: my ($domain,$msgid,$message,$server)=@_;
5644: my $status = &Apache::lonnet::critical(
5645: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
5646: &escape($message),$server);
5647: return $status;
5648: }
5649:
5650: sub dcmaildump {
5651: my ($dom,$startdate,$enddate,$senders) = @_;
5652: my %returnhash=();
5653:
5654: if (defined(&domain($dom,'primary'))) {
5655: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
5656: &escape($enddate).':';
5657: my @esc_senders=map { &escape($_)} @$senders;
5658: $cmd.=&escape(join('&',@esc_senders));
5659: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
5660: my ($key,$value) = split(/\=/,$line,2);
5661: if (($key) && ($value)) {
5662: $returnhash{&unescape($key)} = &unescape($value);
5663: }
5664: }
5665: }
5666: return %returnhash;
5667: }
5668: # ---------------------------------------------------------- Domain roles
5669:
5670: sub get_domain_roles {
5671: my ($dom,$roles,$startdate,$enddate)=@_;
5672: if ((!defined($startdate)) || ($startdate eq '')) {
5673: $startdate = '.';
5674: }
5675: if ((!defined($enddate)) || ($enddate eq '')) {
5676: $enddate = '.';
5677: }
5678: my $rolelist;
5679: if (ref($roles) eq 'ARRAY') {
5680: $rolelist = join('&',@{$roles});
5681: }
5682: my %personnel = ();
5683:
5684: my %servers = &get_servers($dom,'library');
5685: foreach my $tryserver (keys(%servers)) {
5686: %{$personnel{$tryserver}}=();
5687: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
5688: &escape($startdate).':'.
5689: &escape($enddate).':'.
5690: &escape($rolelist), $tryserver))) {
5691: my ($key,$value) = split(/\=/,$line,2);
5692: if (($key) && ($value)) {
5693: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
5694: }
5695: }
5696: }
5697: return %personnel;
5698: }
5699:
5700: sub get_active_domroles {
5701: my ($dom,$roles) = @_;
5702: return () unless (ref($roles) eq 'ARRAY');
5703: my $now = time;
5704: my %dompersonnel = &get_domain_roles($dom,$roles,$now,$now);
5705: my %domroles;
5706: foreach my $server (keys(%dompersonnel)) {
5707: foreach my $user (sort(keys(%{$dompersonnel{$server}}))) {
5708: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,$user);
5709: $domroles{$uname.':'.$udom} = $dompersonnel{$server}{$user};
5710: }
5711: }
5712: return %domroles;
5713: }
5714:
5715: # ----------------------------------------------------------- Interval timing
5716:
5717: {
5718: # Caches needed for speedup of navmaps
5719: # We don't want to cache this for very long at all (5 seconds at most)
5720: #
5721: # The user for whom we cache
5722: my $cachedkey='';
5723: # The cached times for this user
5724: my %cachedtimes=();
5725: # When this was last done
5726: my $cachedtime='';
5727:
5728: sub load_all_first_access {
5729: my ($uname,$udom,$ignorecache)=@_;
5730: if (($cachedkey eq $uname.':'.$udom) &&
5731: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'}) &&
5732: (!$ignorecache)) {
5733: return;
5734: }
5735: $cachedtime=time;
5736: $cachedkey=$uname.':'.$udom;
5737: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
5738: }
5739:
5740: sub get_first_access {
5741: my ($type,$argsymb,$argmap,$ignorecache)=@_;
5742: my ($symb,$courseid,$udom,$uname)=&whichuser();
5743: if ($argsymb) { $symb=$argsymb; }
5744: my ($map,$id,$res)=&decode_symb($symb);
5745: if ($argmap) { $map = $argmap; }
5746: if ($type eq 'course') {
5747: $res='course';
5748: } elsif ($type eq 'map') {
5749: $res=&symbread($map);
5750: } else {
5751: $res=$symb;
5752: }
5753: &load_all_first_access($uname,$udom,$ignorecache);
5754: return $cachedtimes{"$courseid\0$res"};
5755: }
5756:
5757: sub set_first_access {
5758: my ($type,$interval)=@_;
5759: my ($symb,$courseid,$udom,$uname)=&whichuser();
5760: my ($map,$id,$res)=&decode_symb($symb);
5761: if ($type eq 'course') {
5762: $res='course';
5763: } elsif ($type eq 'map') {
5764: $res=&symbread($map);
5765: } else {
5766: $res=$symb;
5767: }
5768: $cachedkey='';
5769: my $firstaccess=&get_first_access($type,$symb,$map);
5770: if ($firstaccess) {
5771: &logthis("First access time already set ($firstaccess) when attempting ".
5772: "to set new value (type: $type, extent: $res) for $uname:$udom ".
5773: "in $courseid");
5774: return 'already_set';
5775: } else {
5776: my $start = time;
5777: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
5778: $udom,$uname);
5779: if ($putres eq 'ok') {
5780: &put('timerinterval',{"$courseid\0$res"=>$interval},
5781: $udom,$uname);
5782: &appenv(
5783: {
5784: 'course.'.$courseid.'.firstaccess.'.$res => $start,
5785: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
5786: }
5787: );
5788: if (($cachedtime) && (abs($start-$cachedtime) < 5)) {
5789: $cachedtimes{"$courseid\0$res"} = $start;
5790: }
5791: } elsif ($putres ne 'refused') {
5792: &logthis("Result: $putres when attempting to set first access time ".
5793: "(type: $type, extent: $res) for $uname:$udom in $courseid");
5794: }
5795: return $putres;
5796: }
5797: return 'already_set';
5798: }
5799: }
5800:
5801: # --------------------------------------------- Set Expire Date for Spreadsheet
5802:
5803: sub expirespread {
5804: my ($uname,$udom,$stype,$usymb)=@_;
5805: my $cid=$env{'request.course.id'};
5806: if ($cid) {
5807: my $now=time;
5808: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
5809: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
5810: $env{'course.'.$cid.'.num'}.
5811: ':nohist_expirationdates:'.
5812: &escape($key).'='.$now,
5813: $env{'course.'.$cid.'.home'})
5814: }
5815: return 'ok';
5816: }
5817:
5818: # ----------------------------------------------------- Devalidate Spreadsheets
5819:
5820: sub devalidate {
5821: my ($symb,$uname,$udom)=@_;
5822: my $cid=$env{'request.course.id'};
5823: if ($cid) {
5824: # delete the stored spreadsheets for
5825: # - the student level sheet of this user in course's homespace
5826: # - the assessment level sheet for this resource
5827: # for this user in user's homespace
5828: # - current conditional state info
5829: my $key=$uname.':'.$udom.':';
5830: my $status=
5831: &del('nohist_calculatedsheets',
5832: [$key.'studentcalc:'],
5833: $env{'course.'.$cid.'.domain'},
5834: $env{'course.'.$cid.'.num'})
5835: .' '.
5836: &del('nohist_calculatedsheets_'.$cid,
5837: [$key.'assesscalc:'.$symb],$udom,$uname);
5838: unless ($status eq 'ok ok') {
5839: &logthis('Could not devalidate spreadsheet '.
5840: $uname.' at '.$udom.' for '.
5841: $symb.': '.$status);
5842: }
5843: &delenv('user.state.'.$cid);
5844: }
5845: }
5846:
5847: sub get_scalar {
5848: my ($string,$end) = @_;
5849: my $value;
5850: if ($$string =~ s/^([^&]*?)($end)/$2/) {
5851: $value = $1;
5852: } elsif ($$string =~ s/^([^&]*?)&//) {
5853: $value = $1;
5854: }
5855: return &unescape($value);
5856: }
5857:
5858: sub array2str {
5859: my (@array) = @_;
5860: my $result=&arrayref2str(\@array);
5861: $result=~s/^__ARRAY_REF__//;
5862: $result=~s/__END_ARRAY_REF__$//;
5863: return $result;
5864: }
5865:
5866: sub arrayref2str {
5867: my ($arrayref) = @_;
5868: my $result='__ARRAY_REF__';
5869: foreach my $elem (@$arrayref) {
5870: if(ref($elem) eq 'ARRAY') {
5871: $result.=&arrayref2str($elem).'&';
5872: } elsif(ref($elem) eq 'HASH') {
5873: $result.=&hashref2str($elem).'&';
5874: } elsif(ref($elem)) {
5875: #print("Got a ref of ".(ref($elem))." skipping.");
5876: } else {
5877: $result.=&escape($elem).'&';
5878: }
5879: }
5880: $result=~s/\&$//;
5881: $result .= '__END_ARRAY_REF__';
5882: return $result;
5883: }
5884:
5885: sub hash2str {
5886: my (%hash) = @_;
5887: my $result=&hashref2str(\%hash);
5888: $result=~s/^__HASH_REF__//;
5889: $result=~s/__END_HASH_REF__$//;
5890: return $result;
5891: }
5892:
5893: sub hashref2str {
5894: my ($hashref)=@_;
5895: my $result='__HASH_REF__';
5896: foreach my $key (sort(keys(%$hashref))) {
5897: if (ref($key) eq 'ARRAY') {
5898: $result.=&arrayref2str($key).'=';
5899: } elsif (ref($key) eq 'HASH') {
5900: $result.=&hashref2str($key).'=';
5901: } elsif (ref($key)) {
5902: $result.='=';
5903: #print("Got a ref of ".(ref($key))." skipping.");
5904: } else {
5905: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
5906: }
5907:
5908: if(ref($hashref->{$key}) eq 'ARRAY') {
5909: $result.=&arrayref2str($hashref->{$key}).'&';
5910: } elsif(ref($hashref->{$key}) eq 'HASH') {
5911: $result.=&hashref2str($hashref->{$key}).'&';
5912: } elsif(ref($hashref->{$key})) {
5913: $result.='&';
5914: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
5915: } else {
5916: $result.=&escape($hashref->{$key}).'&';
5917: }
5918: }
5919: $result=~s/\&$//;
5920: $result .= '__END_HASH_REF__';
5921: return $result;
5922: }
5923:
5924: sub str2hash {
5925: my ($string)=@_;
5926: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
5927: return %$hash;
5928: }
5929:
5930: sub str2hashref {
5931: my ($string) = @_;
5932:
5933: my %hash;
5934:
5935: if($string !~ /^__HASH_REF__/) {
5936: if (! ($string eq '' || !defined($string))) {
5937: $hash{'error'}='Not hash reference';
5938: }
5939: return (\%hash, $string);
5940: }
5941:
5942: $string =~ s/^__HASH_REF__//;
5943:
5944: while($string !~ /^__END_HASH_REF__/) {
5945: #key
5946: my $key='';
5947: if($string =~ /^__HASH_REF__/) {
5948: ($key, $string)=&str2hashref($string);
5949: if(defined($key->{'error'})) {
5950: $hash{'error'}='Bad data';
5951: return (\%hash, $string);
5952: }
5953: } elsif($string =~ /^__ARRAY_REF__/) {
5954: ($key, $string)=&str2arrayref($string);
5955: if($key->[0] eq 'Array reference error') {
5956: $hash{'error'}='Bad data';
5957: return (\%hash, $string);
5958: }
5959: } else {
5960: $string =~ s/^(.*?)=//;
5961: $key=&unescape($1);
5962: }
5963: $string =~ s/^=//;
5964:
5965: #value
5966: my $value='';
5967: if($string =~ /^__HASH_REF__/) {
5968: ($value, $string)=&str2hashref($string);
5969: if(defined($value->{'error'})) {
5970: $hash{'error'}='Bad data';
5971: return (\%hash, $string);
5972: }
5973: } elsif($string =~ /^__ARRAY_REF__/) {
5974: ($value, $string)=&str2arrayref($string);
5975: if($value->[0] eq 'Array reference error') {
5976: $hash{'error'}='Bad data';
5977: return (\%hash, $string);
5978: }
5979: } else {
5980: $value=&get_scalar(\$string,'__END_HASH_REF__');
5981: }
5982: $string =~ s/^&//;
5983:
5984: $hash{$key}=$value;
5985: }
5986:
5987: $string =~ s/^__END_HASH_REF__//;
5988:
5989: return (\%hash, $string);
5990: }
5991:
5992: sub str2array {
5993: my ($string)=@_;
5994: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
5995: return @$array;
5996: }
5997:
5998: sub str2arrayref {
5999: my ($string) = @_;
6000: my @array;
6001:
6002: if($string !~ /^__ARRAY_REF__/) {
6003: if (! ($string eq '' || !defined($string))) {
6004: $array[0]='Array reference error';
6005: }
6006: return (\@array, $string);
6007: }
6008:
6009: $string =~ s/^__ARRAY_REF__//;
6010:
6011: while($string !~ /^__END_ARRAY_REF__/) {
6012: my $value='';
6013: if($string =~ /^__HASH_REF__/) {
6014: ($value, $string)=&str2hashref($string);
6015: if(defined($value->{'error'})) {
6016: $array[0] ='Array reference error';
6017: return (\@array, $string);
6018: }
6019: } elsif($string =~ /^__ARRAY_REF__/) {
6020: ($value, $string)=&str2arrayref($string);
6021: if($value->[0] eq 'Array reference error') {
6022: $array[0] ='Array reference error';
6023: return (\@array, $string);
6024: }
6025: } else {
6026: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
6027: }
6028: $string =~ s/^&//;
6029:
6030: push(@array, $value);
6031: }
6032:
6033: $string =~ s/^__END_ARRAY_REF__//;
6034:
6035: return (\@array, $string);
6036: }
6037:
6038: # -------------------------------------------------------------------Temp Store
6039:
6040: sub tmpreset {
6041: my ($symb,$namespace,$domain,$stuname) = @_;
6042: if (!$symb) {
6043: $symb=&symbread();
6044: if (!$symb) { $symb= $env{'request.url'}; }
6045: }
6046: $symb=escape($symb);
6047:
6048: if (!$namespace) { $namespace=$env{'request.state'}; }
6049: $namespace=~s/\//\_/g;
6050: $namespace=~s/\W//g;
6051:
6052: if (!$domain) { $domain=$env{'user.domain'}; }
6053: if (!$stuname) { $stuname=$env{'user.name'}; }
6054: if ($domain eq 'public' && $stuname eq 'public') {
6055: $stuname=$ENV{'REMOTE_ADDR'};
6056: }
6057: my $path=LONCAPA::tempdir();
6058: my %hash;
6059: if (tie(%hash,'GDBM_File',
6060: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
6061: &GDBM_WRCREAT(),0640)) {
6062: foreach my $key (keys(%hash)) {
6063: if ($key=~ /:$symb/) {
6064: delete($hash{$key});
6065: }
6066: }
6067: }
6068: }
6069:
6070: sub tmpstore {
6071: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
6072:
6073: if (!$symb) {
6074: $symb=&symbread();
6075: if (!$symb) { $symb= $env{'request.url'}; }
6076: }
6077: $symb=escape($symb);
6078:
6079: if (!$namespace) {
6080: # I don't think we would ever want to store this for a course.
6081: # it seems this will only be used if we don't have a course.
6082: #$namespace=$env{'request.course.id'};
6083: #if (!$namespace) {
6084: $namespace=$env{'request.state'};
6085: #}
6086: }
6087: $namespace=~s/\//\_/g;
6088: $namespace=~s/\W//g;
6089: if (!$domain) { $domain=$env{'user.domain'}; }
6090: if (!$stuname) { $stuname=$env{'user.name'}; }
6091: if ($domain eq 'public' && $stuname eq 'public') {
6092: $stuname=$ENV{'REMOTE_ADDR'};
6093: }
6094: my $now=time;
6095: my %hash;
6096: my $path=LONCAPA::tempdir();
6097: if (tie(%hash,'GDBM_File',
6098: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
6099: &GDBM_WRCREAT(),0640)) {
6100: $hash{"version:$symb"}++;
6101: my $version=$hash{"version:$symb"};
6102: my $allkeys='';
6103: foreach my $key (keys(%$storehash)) {
6104: $allkeys.=$key.':';
6105: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
6106: }
6107: $hash{"$version:$symb:timestamp"}=$now;
6108: $allkeys.='timestamp';
6109: $hash{"$version:keys:$symb"}=$allkeys;
6110: if (untie(%hash)) {
6111: return 'ok';
6112: } else {
6113: return "error:$!";
6114: }
6115: } else {
6116: return "error:$!";
6117: }
6118: }
6119:
6120: # -----------------------------------------------------------------Temp Restore
6121:
6122: sub tmprestore {
6123: my ($symb,$namespace,$domain,$stuname) = @_;
6124:
6125: if (!$symb) {
6126: $symb=&symbread();
6127: if (!$symb) { $symb= $env{'request.url'}; }
6128: }
6129: $symb=escape($symb);
6130:
6131: if (!$namespace) { $namespace=$env{'request.state'}; }
6132:
6133: if (!$domain) { $domain=$env{'user.domain'}; }
6134: if (!$stuname) { $stuname=$env{'user.name'}; }
6135: if ($domain eq 'public' && $stuname eq 'public') {
6136: $stuname=$ENV{'REMOTE_ADDR'};
6137: }
6138: my %returnhash;
6139: $namespace=~s/\//\_/g;
6140: $namespace=~s/\W//g;
6141: my %hash;
6142: my $path=LONCAPA::tempdir();
6143: if (tie(%hash,'GDBM_File',
6144: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
6145: &GDBM_READER(),0640)) {
6146: my $version=$hash{"version:$symb"};
6147: $returnhash{'version'}=$version;
6148: my $scope;
6149: for ($scope=1;$scope<=$version;$scope++) {
6150: my $vkeys=$hash{"$scope:keys:$symb"};
6151: my @keys=split(/:/,$vkeys);
6152: my $key;
6153: $returnhash{"$scope:keys"}=$vkeys;
6154: foreach $key (@keys) {
6155: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
6156: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
6157: }
6158: }
6159: if (!(untie(%hash))) {
6160: return "error:$!";
6161: }
6162: } else {
6163: return "error:$!";
6164: }
6165: return %returnhash;
6166: }
6167:
6168: # ----------------------------------------------------------------------- Store
6169:
6170: sub store {
6171: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
6172: my $home='';
6173:
6174: if ($stuname) { $home=&homeserver($stuname,$domain); }
6175:
6176: $symb=&symbclean($symb);
6177: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
6178:
6179: if (!$domain) { $domain=$env{'user.domain'}; }
6180: if (!$stuname) { $stuname=$env{'user.name'}; }
6181:
6182: &devalidate($symb,$stuname,$domain);
6183:
6184: $symb=escape($symb);
6185: if (!$namespace) {
6186: unless ($namespace=$env{'request.course.id'}) {
6187: return '';
6188: }
6189: }
6190: if (!$home) { $home=$env{'user.home'}; }
6191:
6192: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
6193: $$storehash{'host'}=$perlvar{'lonHostID'};
6194:
6195: my $namevalue='';
6196: foreach my $key (keys(%$storehash)) {
6197: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6198: }
6199: $namevalue=~s/\&$//;
6200: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
6201: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
6202: }
6203:
6204: # -------------------------------------------------------------- Critical Store
6205:
6206: sub cstore {
6207: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
6208: my $home='';
6209:
6210: if ($stuname) { $home=&homeserver($stuname,$domain); }
6211:
6212: $symb=&symbclean($symb);
6213: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
6214:
6215: if (!$domain) { $domain=$env{'user.domain'}; }
6216: if (!$stuname) { $stuname=$env{'user.name'}; }
6217:
6218: &devalidate($symb,$stuname,$domain);
6219:
6220: $symb=escape($symb);
6221: if (!$namespace) {
6222: unless ($namespace=$env{'request.course.id'}) {
6223: return '';
6224: }
6225: }
6226: if (!$home) { $home=$env{'user.home'}; }
6227:
6228: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
6229: $$storehash{'host'}=$perlvar{'lonHostID'};
6230:
6231: my $namevalue='';
6232: foreach my $key (keys(%$storehash)) {
6233: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6234: }
6235: $namevalue=~s/\&$//;
6236: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
6237: return critical
6238: ("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
6239: }
6240:
6241: # --------------------------------------------------------------------- Restore
6242:
6243: sub restore {
6244: my ($symb,$namespace,$domain,$stuname) = @_;
6245: my $home='';
6246:
6247: if ($stuname) { $home=&homeserver($stuname,$domain); }
6248:
6249: if (!$symb) {
6250: return if ($namespace eq 'courserequests');
6251: unless ($symb=escape(&symbread())) { return ''; }
6252: } else {
6253: unless ($namespace eq 'courserequests') {
6254: $symb=&escape(&symbclean($symb));
6255: }
6256: }
6257: if (!$namespace) {
6258: unless ($namespace=$env{'request.course.id'}) {
6259: return '';
6260: }
6261: }
6262: if (!$domain) { $domain=$env{'user.domain'}; }
6263: if (!$stuname) { $stuname=$env{'user.name'}; }
6264: if (!$home) { $home=$env{'user.home'}; }
6265: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
6266:
6267: my %returnhash=();
6268: foreach my $line (split(/\&/,$answer)) {
6269: my ($name,$value)=split(/\=/,$line);
6270: $returnhash{&unescape($name)}=&thaw_unescape($value);
6271: }
6272: my $version;
6273: for ($version=1;$version<=$returnhash{'version'};$version++) {
6274: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
6275: $returnhash{$item}=$returnhash{$version.':'.$item};
6276: }
6277: }
6278: return %returnhash;
6279: }
6280:
6281: # ---------------------------------------------------------- Course Description
6282: #
6283: #
6284:
6285: sub coursedescription {
6286: my ($courseid,$args)=@_;
6287: $courseid=~s/^\///;
6288: $courseid=~s/\_/\//g;
6289: my ($cdomain,$cnum)=split(/\//,$courseid);
6290: my $chome=&homeserver($cnum,$cdomain);
6291: my $normalid=$cdomain.'_'.$cnum;
6292: # need to always cache even if we get errors otherwise we keep
6293: # trying and trying and trying to get the course description.
6294: my %envhash=();
6295: my %returnhash=();
6296:
6297: my $expiretime=600;
6298: if ($env{'request.course.id'} eq $normalid) {
6299: $expiretime=120;
6300: }
6301:
6302: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
6303: if (!$args->{'freshen_cache'}
6304: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
6305: foreach my $key (keys(%env)) {
6306: next if ($key !~ /^\Q$prefix\E(.*)/);
6307: my ($setting) = $1;
6308: $returnhash{$setting} = $env{$key};
6309: }
6310: return %returnhash;
6311: }
6312:
6313: # get the data again
6314:
6315: if (!$args->{'one_time'}) {
6316: $envhash{'course.'.$normalid.'.last_cache'}=time;
6317: }
6318:
6319: if ($chome ne 'no_host') {
6320: %returnhash=&dump('environment',$cdomain,$cnum);
6321: if (!exists($returnhash{'con_lost'})) {
6322: my $username = $env{'user.name'}; # Defult username
6323: if(defined $args->{'user'}) {
6324: $username = $args->{'user'};
6325: }
6326: $returnhash{'home'}= $chome;
6327: $returnhash{'domain'} = $cdomain;
6328: $returnhash{'num'} = $cnum;
6329: if (!defined($returnhash{'type'})) {
6330: $returnhash{'type'} = 'Course';
6331: }
6332: while (my ($name,$value) = each %returnhash) {
6333: $envhash{'course.'.$normalid.'.'.$name}=$value;
6334: }
6335: $returnhash{'url'}=&clutter($returnhash{'url'});
6336: $returnhash{'fn'}=LONCAPA::tempdir() .
6337: $username.'_'.$cdomain.'_'.$cnum;
6338: $envhash{'course.'.$normalid.'.home'}=$chome;
6339: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
6340: $envhash{'course.'.$normalid.'.num'}=$cnum;
6341: }
6342: }
6343: if (!$args->{'one_time'}) {
6344: &appenv(\%envhash);
6345: }
6346: return %returnhash;
6347: }
6348:
6349: sub update_released_required {
6350: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
6351: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
6352: $cid = $env{'request.course.id'};
6353: $cdom = $env{'course.'.$cid.'.domain'};
6354: $cnum = $env{'course.'.$cid.'.num'};
6355: $chome = $env{'course.'.$cid.'.home'};
6356: }
6357: if ($needsrelease) {
6358: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
6359: my $needsupdate;
6360: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
6361: $needsupdate = 1;
6362: } else {
6363: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
6364: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
6365: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
6366: $needsupdate = 1;
6367: }
6368: }
6369: if ($needsupdate) {
6370: my %needshash = (
6371: 'internal.releaserequired' => $needsrelease,
6372: );
6373: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
6374: if ($putresult eq 'ok') {
6375: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
6376: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
6377: if (ref($crsinfo{$cid}) eq 'HASH') {
6378: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
6379: &courseidput($cdom,\%crsinfo,$chome,'notime');
6380: }
6381: }
6382: }
6383: }
6384: return;
6385: }
6386:
6387: # -------------------------------------------------See if a user is privileged
6388:
6389: sub privileged {
6390: my ($username,$domain,$possdomains,$possroles)=@_;
6391: my $now = time;
6392: my $roles;
6393: if (ref($possroles) eq 'ARRAY') {
6394: $roles = $possroles;
6395: } else {
6396: $roles = ['dc','su'];
6397: }
6398: if (ref($possdomains) eq 'ARRAY') {
6399: my %privileged = &privileged_by_domain($possdomains,$roles);
6400: foreach my $dom (@{$possdomains}) {
6401: if (($username =~ /^$match_username$/) && ($domain =~ /^$match_domain$/) &&
6402: (ref($privileged{$dom}) eq 'HASH')) {
6403: foreach my $role (@{$roles}) {
6404: if (ref($privileged{$dom}{$role}) eq 'HASH') {
6405: if (exists($privileged{$dom}{$role}{$username.':'.$domain})) {
6406: my ($end,$start) = split(/:/,$privileged{$dom}{$role}{$username.':'.$domain});
6407: return 1 unless (($end && $end < $now) ||
6408: ($start && $start > $now));
6409: }
6410: }
6411: }
6412: }
6413: }
6414: } else {
6415: my %rolesdump = &dump("roles", $domain, $username) or return 0;
6416: my $now = time;
6417:
6418: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys(%rolesdump)}) {
6419: my ($trole, $tend, $tstart) = split(/_/, $role);
6420: if (grep(/^\Q$trole\E$/,@{$roles})) {
6421: return 1 unless ($tend && $tend < $now)
6422: or ($tstart && $tstart > $now);
6423: }
6424: }
6425: }
6426: return 0;
6427: }
6428:
6429: sub privileged_by_domain {
6430: my ($domains,$roles) = @_;
6431: my %privileged = ();
6432: my $cachetime = 60*60*24;
6433: my $now = time;
6434: unless ((ref($domains) eq 'ARRAY') && (ref($roles) eq 'ARRAY')) {
6435: return %privileged;
6436: }
6437: foreach my $dom (@{$domains}) {
6438: next if (ref($privileged{$dom}) eq 'HASH');
6439: my $needroles;
6440: foreach my $role (@{$roles}) {
6441: my ($result,$cached)=&is_cached_new('priv_'.$role,$dom);
6442: if (defined($cached)) {
6443: if (ref($result) eq 'HASH') {
6444: $privileged{$dom}{$role} = $result;
6445: }
6446: } else {
6447: $needroles = 1;
6448: }
6449: }
6450: if ($needroles) {
6451: my %dompersonnel = &get_domain_roles($dom,$roles);
6452: $privileged{$dom} = {};
6453: foreach my $server (keys(%dompersonnel)) {
6454: if (ref($dompersonnel{$server}) eq 'HASH') {
6455: foreach my $item (keys(%{$dompersonnel{$server}})) {
6456: my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
6457: my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
6458: next if ($end && $end < $now);
6459: $privileged{$dom}{$trole}{$uname.':'.$udom} =
6460: $dompersonnel{$server}{$item};
6461: }
6462: }
6463: }
6464: if (ref($privileged{$dom}) eq 'HASH') {
6465: foreach my $role (@{$roles}) {
6466: if (ref($privileged{$dom}{$role}) eq 'HASH') {
6467: &do_cache_new('priv_'.$role,$dom,$privileged{$dom}{$role},$cachetime);
6468: } else {
6469: my %hash = ();
6470: &do_cache_new('priv_'.$role,$dom,\%hash,$cachetime);
6471: }
6472: }
6473: }
6474: }
6475: }
6476: return %privileged;
6477: }
6478:
6479: # -------------------------------------------------------- Get user privileges
6480:
6481: sub rolesinit {
6482: my ($domain, $username) = @_;
6483: my %userroles = ('user.login.time' => time);
6484: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
6485:
6486: # firstaccess and timerinterval are related to timed maps/resources.
6487: # also, blocking can be triggered by an activating timer
6488: # it's saved in the user's %env.
6489: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
6490: my %timerinterval = &dump('timerinterval', $domain, $username);
6491: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
6492: %timerintchk, %timerintenv);
6493:
6494: foreach my $key (keys(%firstaccess)) {
6495: my ($cid, $rest) = split(/\0/, $key);
6496: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
6497: }
6498:
6499: foreach my $key (keys(%timerinterval)) {
6500: my ($cid,$rest) = split(/\0/,$key);
6501: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
6502: }
6503:
6504: my %allroles=();
6505: my %allgroups=();
6506:
6507: for my $area (grep { ! /^rolesdef_/ } keys(%rolesdump)) {
6508: my $role = $rolesdump{$area};
6509: $area =~ s/\_\w\w$//;
6510:
6511: my ($trole, $tend, $tstart, $group_privs);
6512:
6513: if ($role =~ /^cr/) {
6514: # Custom role, defined by a user
6515: # e.g., user.role.cr/msu/smith/mynewrole
6516: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
6517: $trole = $1;
6518: ($tend, $tstart) = split('_', $2);
6519: } else {
6520: $trole = $role;
6521: }
6522: } elsif ($role =~ m|^gr/|) {
6523: # Role of member in a group, defined within a course/community
6524: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
6525: ($trole, $tend, $tstart) = split(/_/, $role);
6526: next if $tstart eq '-1';
6527: ($trole, $group_privs) = split(/\//, $trole);
6528: $group_privs = &unescape($group_privs);
6529: } else {
6530: # Just a normal role, defined in roles.tab
6531: ($trole, $tend, $tstart) = split(/_/,$role);
6532: }
6533:
6534: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
6535: $username);
6536: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
6537:
6538: # role expired or not available yet?
6539: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
6540: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
6541:
6542: next if $area eq '' or $trole eq '';
6543:
6544: my $spec = "$trole.$area";
6545: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
6546:
6547: if ($trole =~ /^cr\//) {
6548: # Custom role, defined by a user
6549: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
6550: } elsif ($trole eq 'gr') {
6551: # Role of a member in a group, defined within a course/community
6552: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
6553: next;
6554: } else {
6555: # Normal role, defined in roles.tab
6556: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
6557: }
6558:
6559: my $cid = $tdomain.'_'.$trest;
6560: unless ($firstaccchk{$cid}) {
6561: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
6562: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
6563: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
6564: $coursetimerstarts{$cid}{$item};
6565: }
6566: }
6567: $firstaccchk{$cid} = 1;
6568: }
6569: unless ($timerintchk{$cid}) {
6570: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
6571: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
6572: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
6573: $coursetimerintervals{$cid}{$item};
6574: }
6575: }
6576: $timerintchk{$cid} = 1;
6577: }
6578: }
6579:
6580: @userroles{'user.author','user.adv','user.rar'} = &set_userprivs(\%userroles,
6581: \%allroles, \%allgroups);
6582: $env{'user.adv'} = $userroles{'user.adv'};
6583: $env{'user.rar'} = $userroles{'user.rar'};
6584:
6585: return (\%userroles,\%firstaccenv,\%timerintenv);
6586: }
6587:
6588: sub set_arearole {
6589: my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
6590: unless ($nolog) {
6591: # log the associated role with the area
6592: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
6593: }
6594: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
6595: }
6596:
6597: sub custom_roleprivs {
6598: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
6599: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
6600: my $homsvr = &homeserver($rauthor,$rdomain);
6601: if (&hostname($homsvr) ne '') {
6602: my ($rdummy,$roledef)=
6603: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
6604: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
6605: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
6606: if (defined($syspriv)) {
6607: if ($trest =~ /^$match_community$/) {
6608: $syspriv =~ s/bre\&S//;
6609: }
6610: $$allroles{'cm./'}.=':'.$syspriv;
6611: $$allroles{$spec.'./'}.=':'.$syspriv;
6612: }
6613: if ($tdomain ne '') {
6614: if (defined($dompriv)) {
6615: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
6616: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
6617: }
6618: if (($trest ne '') && (defined($coursepriv))) {
6619: if ($trole =~ m{^cr/$tdomain/$tdomain\Q-domainconfig\E/([^/]+)$}) {
6620: my $rolename = $1;
6621: $coursepriv = &course_adhocrole_privs($rolename,$tdomain,$trest,$coursepriv);
6622: }
6623: $$allroles{'cm.'.$area}.=':'.$coursepriv;
6624: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
6625: }
6626: }
6627: }
6628: }
6629: }
6630:
6631: sub course_adhocrole_privs {
6632: my ($rolename,$cdom,$cnum,$coursepriv) = @_;
6633: my %overrides = &get('environment',["internal.adhocpriv.$rolename"],$cdom,$cnum);
6634: if ($overrides{"internal.adhocpriv.$rolename"}) {
6635: my (%currprivs,%storeprivs);
6636: foreach my $item (split(/:/,$coursepriv)) {
6637: my ($priv,$restrict) = split(/\&/,$item);
6638: $currprivs{$priv} = $restrict;
6639: }
6640: my (%possadd,%possremove,%full);
6641: foreach my $item (split(/\:/,$Apache::lonnet::pr{'cr:c'})) {
6642: my ($priv,$restrict)=split(/\&/,$item);
6643: $full{$priv} = $restrict;
6644: }
6645: foreach my $item (split(/,/,$overrides{"internal.adhocpriv.$rolename"})) {
6646: next if ($item eq '');
6647: my ($rule,$rest) = split(/=/,$item);
6648: next unless (($rule eq 'off') || ($rule eq 'on'));
6649: foreach my $priv (split(/:/,$rest)) {
6650: if ($priv ne '') {
6651: if ($rule eq 'off') {
6652: $possremove{$priv} = 1;
6653: } else {
6654: $possadd{$priv} = 1;
6655: }
6656: }
6657: }
6658: }
6659: foreach my $priv (sort(keys(%full))) {
6660: if (exists($currprivs{$priv})) {
6661: unless (exists($possremove{$priv})) {
6662: $storeprivs{$priv} = $currprivs{$priv};
6663: }
6664: } elsif (exists($possadd{$priv})) {
6665: $storeprivs{$priv} = $full{$priv};
6666: }
6667: }
6668: $coursepriv = ':'.join(':',map { $_.'&'.$storeprivs{$_}; } sort(keys(%storeprivs)));
6669: }
6670: return $coursepriv;
6671: }
6672:
6673: sub group_roleprivs {
6674: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
6675: my $access = 1;
6676: my $now = time;
6677: if (($tend!=0) && ($tend<$now)) { $access = 0; }
6678: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
6679: if ($access) {
6680: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
6681: $$allgroups{$course}{$group} .=':'.$group_privs;
6682: }
6683: }
6684:
6685: sub standard_roleprivs {
6686: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
6687: if (defined($pr{$trole.':s'})) {
6688: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
6689: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
6690: }
6691: if ($tdomain ne '') {
6692: if (defined($pr{$trole.':d'})) {
6693: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
6694: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
6695: }
6696: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
6697: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
6698: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
6699: }
6700: }
6701: }
6702:
6703: sub set_userprivs {
6704: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
6705: my $author=0;
6706: my $adv=0;
6707: my $rar=0;
6708: my %grouproles = ();
6709: if (keys(%{$allgroups}) > 0) {
6710: my @groupkeys;
6711: foreach my $role (keys(%{$allroles})) {
6712: push(@groupkeys,$role);
6713: }
6714: if (ref($groups_roles) eq 'HASH') {
6715: foreach my $key (keys(%{$groups_roles})) {
6716: unless (grep(/^\Q$key\E$/,@groupkeys)) {
6717: push(@groupkeys,$key);
6718: }
6719: }
6720: }
6721: if (@groupkeys > 0) {
6722: foreach my $role (@groupkeys) {
6723: my ($trole,$area,$sec,$extendedarea);
6724: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
6725: $trole = $1;
6726: $area = $2;
6727: $sec = $3;
6728: $extendedarea = $area.$sec;
6729: if (exists($$allgroups{$area})) {
6730: foreach my $group (keys(%{$$allgroups{$area}})) {
6731: my $spec = $trole.'.'.$extendedarea;
6732: $grouproles{$spec.'.'.$area.'/'.$group} =
6733: $$allgroups{$area}{$group};
6734: }
6735: }
6736: }
6737: }
6738: }
6739: }
6740: foreach my $group (keys(%grouproles)) {
6741: $$allroles{$group} = $grouproles{$group};
6742: }
6743: foreach my $role (keys(%{$allroles})) {
6744: my %thesepriv;
6745: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
6746: foreach my $item (split(/:/,$$allroles{$role})) {
6747: if ($item ne '') {
6748: my ($privilege,$restrictions)=split(/&/,$item);
6749: if ($restrictions eq '') {
6750: $thesepriv{$privilege}='F';
6751: } elsif ($thesepriv{$privilege} ne 'F') {
6752: $thesepriv{$privilege}.=$restrictions;
6753: }
6754: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
6755: if ($thesepriv{'rar'} eq 'F') { $rar=1; }
6756: }
6757: }
6758: my $thesestr='';
6759: foreach my $priv (sort(keys(%thesepriv))) {
6760: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
6761: }
6762: $userroles->{'user.priv.'.$role} = $thesestr;
6763: }
6764: return ($author,$adv,$rar);
6765: }
6766:
6767: sub role_status {
6768: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
6769: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
6770: my ($one,$two) = split(m{\./},$rolekey,2);
6771: (undef,undef,$$role) = split(/\./,$one,3);
6772: unless (!defined($$role) || $$role eq '') {
6773: $$where = '/'.$two;
6774: $$trolecode=$$role.'.'.$$where;
6775: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
6776: $$tstatus='is';
6777: if ($$tstart && $$tstart>$update) {
6778: $$tstatus='future';
6779: if ($$tstart<$now) {
6780: if ($$tstart && $$tstart>$refresh) {
6781: if (($$where ne '') && ($$role ne '')) {
6782: my (%allroles,%allgroups,$group_privs,
6783: %groups_roles,@rolecodes);
6784: my %userroles = (
6785: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
6786: );
6787: @rolecodes = ('cm');
6788: my $spec=$$role.'.'.$$where;
6789: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
6790: if ($$role =~ /^cr\//) {
6791: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
6792: push(@rolecodes,'cr');
6793: } elsif ($$role eq 'gr') {
6794: push(@rolecodes,$$role);
6795: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
6796: $env{'user.name'});
6797: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
6798: (undef,my $group_privs) = split(/\//,$trole);
6799: $group_privs = &unescape($group_privs);
6800: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
6801: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
6802: &get_groups_roles($tdomain,$trest,
6803: \%course_roles,\@rolecodes,
6804: \%groups_roles);
6805: } else {
6806: push(@rolecodes,$$role);
6807: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
6808: }
6809: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%allroles,\%allgroups,
6810: \%groups_roles);
6811: &appenv(\%userroles,\@rolecodes);
6812: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
6813: }
6814: }
6815: $$tstatus = 'is';
6816: }
6817: }
6818: if ($$tend) {
6819: if ($$tend<$update) {
6820: $$tstatus='expired';
6821: } elsif ($$tend<$now) {
6822: $$tstatus='will_not';
6823: }
6824: }
6825: }
6826: }
6827: }
6828:
6829: sub get_groups_roles {
6830: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
6831: return unless((ref($cdom_courseroles) eq 'HASH') &&
6832: (ref($rolecodes) eq 'ARRAY') &&
6833: (ref($groups_roles) eq 'HASH'));
6834: if (keys(%{$cdom_courseroles}) > 0) {
6835: my ($cnum) = ($rest =~ /^($match_courseid)/);
6836: if ($cdom ne '' && $cnum ne '') {
6837: foreach my $key (keys(%{$cdom_courseroles})) {
6838: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
6839: my $crsrole = $1;
6840: my $crssec = $2;
6841: if ($crsrole =~ /^cr/) {
6842: unless (grep(/^cr$/,@{$rolecodes})) {
6843: push(@{$rolecodes},'cr');
6844: }
6845: } else {
6846: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
6847: push(@{$rolecodes},$crsrole);
6848: }
6849: }
6850: my $rolekey = "$crsrole./$cdom/$cnum";
6851: if ($crssec ne '') {
6852: $rolekey .= "/$crssec";
6853: }
6854: $rolekey .= './';
6855: $groups_roles->{$rolekey} = $rolecodes;
6856: }
6857: }
6858: }
6859: }
6860: return;
6861: }
6862:
6863: sub delete_env_groupprivs {
6864: my ($where,$courseroles,$possroles) = @_;
6865: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
6866: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
6867: unless (ref($courseroles->{$udom}) eq 'HASH') {
6868: %{$courseroles->{$udom}} =
6869: &get_my_roles('','','userroles',['active'],
6870: $possroles,[$udom],1);
6871: }
6872: if (ref($courseroles->{$udom}) eq 'HASH') {
6873: foreach my $item (keys(%{$courseroles->{$udom}})) {
6874: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
6875: my $area = '/'.$cdom.'/'.$cnum;
6876: my $privkey = "user.priv.$crsrole.$area";
6877: if ($crssec ne '') {
6878: $privkey .= '/'.$crssec;
6879: }
6880: $privkey .= ".$area/$group";
6881: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
6882: }
6883: }
6884: return;
6885: }
6886:
6887: sub check_adhoc_privs {
6888: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller,$sec) = @_;
6889: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
6890: if ($sec) {
6891: $cckey .= '/'.$sec;
6892: }
6893: my $setprivs;
6894: if ($env{$cckey}) {
6895: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
6896: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
6897: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
6898: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
6899: $setprivs = 1;
6900: }
6901: } else {
6902: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller,$sec);
6903: $setprivs = 1;
6904: }
6905: return $setprivs;
6906: }
6907:
6908: sub set_adhoc_privileges {
6909: # role can be cc, ca, or cr/<dom>/<dom>-domainconfig/role
6910: my ($dcdom,$pickedcourse,$role,$caller,$sec) = @_;
6911: my $area = '/'.$dcdom.'/'.$pickedcourse;
6912: if ($sec ne '') {
6913: $area .= '/'.$sec;
6914: }
6915: my $spec = $role.'.'.$area;
6916: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
6917: $env{'user.name'},1);
6918: my %rolehash = ();
6919: if ($role =~ m{^\Qcr/$dcdom/$dcdom\E\-domainconfig/(\w+)$}) {
6920: my $rolename = $1;
6921: &custom_roleprivs(\%rolehash,$role,$dcdom,$pickedcourse,$spec,$area);
6922: my %domdef = &get_domain_defaults($dcdom);
6923: if (ref($domdef{'adhocroles'}) eq 'HASH') {
6924: if (ref($domdef{'adhocroles'}{$rolename}) eq 'HASH') {
6925: &appenv({'request.role.desc' => $domdef{'adhocroles'}{$rolename}{'desc'},});
6926: }
6927: }
6928: } else {
6929: &standard_roleprivs(\%rolehash,$role,$dcdom,$spec,$pickedcourse,$area);
6930: }
6931: my ($author,$adv,$rar)= &set_userprivs(\%userroles,\%rolehash);
6932: &appenv(\%userroles,[$role,'cm']);
6933: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$spec);
6934: unless (($caller eq 'constructaccess' && $env{'request.course.id'}) ||
6935: ($caller eq 'tiny')) {
6936: &appenv( {'request.role' => $spec,
6937: 'request.role.domain' => $dcdom,
6938: 'request.course.sec' => $sec,
6939: }
6940: );
6941: my $tadv=0;
6942: if (&allowed('adv') eq 'F') { $tadv=1; }
6943: &appenv({'request.role.adv' => $tadv});
6944: }
6945: }
6946:
6947: # --------------------------------------------------------------- get interface
6948:
6949: sub get {
6950: my ($namespace,$storearr,$udomain,$uname)=@_;
6951: my $items='';
6952: foreach my $item (@$storearr) {
6953: $items.=&escape($item).'&';
6954: }
6955: $items=~s/\&$//;
6956: if (!$udomain) { $udomain=$env{'user.domain'}; }
6957: if (!$uname) { $uname=$env{'user.name'}; }
6958: my $uhome=&homeserver($uname,$udomain);
6959:
6960: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
6961: my @pairs=split(/\&/,$rep);
6962: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
6963: return @pairs;
6964: }
6965: my %returnhash=();
6966: my $i=0;
6967: foreach my $item (@$storearr) {
6968: $returnhash{$item}=&thaw_unescape($pairs[$i]);
6969: $i++;
6970: }
6971: return %returnhash;
6972: }
6973:
6974: # --------------------------------------------------------------- del interface
6975:
6976: sub del {
6977: my ($namespace,$storearr,$udomain,$uname)=@_;
6978: my $items='';
6979: foreach my $item (@$storearr) {
6980: $items.=&escape($item).'&';
6981: }
6982:
6983: $items=~s/\&$//;
6984: if (!$udomain) { $udomain=$env{'user.domain'}; }
6985: if (!$uname) { $uname=$env{'user.name'}; }
6986: my $uhome=&homeserver($uname,$udomain);
6987: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
6988: }
6989:
6990: # -------------------------------------------------------------- dump interface
6991:
6992: sub unserialize {
6993: my ($rep, $escapedkeys) = @_;
6994:
6995: return {} if $rep =~ /^error/;
6996:
6997: my %returnhash=();
6998: foreach my $item (split(/\&/,$rep)) {
6999: my ($key, $value) = split(/=/, $item, 2);
7000: $key = unescape($key) unless $escapedkeys;
7001: next if $key =~ /^error: 2 /;
7002: $returnhash{$key} = &thaw_unescape($value);
7003: }
7004: #return %returnhash;
7005: return \%returnhash;
7006: }
7007:
7008: # see Lond::dump_with_regexp
7009: # if $escapedkeys hash keys won't get unescaped.
7010: sub dump {
7011: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
7012: if (!$udomain) { $udomain=$env{'user.domain'}; }
7013: if (!$uname) { $uname=$env{'user.name'}; }
7014: my $uhome=&homeserver($uname,$udomain);
7015:
7016: if ($regexp) {
7017: $regexp=&escape($regexp);
7018: } else {
7019: $regexp='.';
7020: }
7021: if (grep { $_ eq $uhome } current_machine_ids()) {
7022: # user is hosted on this machine
7023: my $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
7024: $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
7025: return %{unserialize($reply, $escapedkeys)};
7026: }
7027: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
7028: my @pairs=split(/\&/,$rep);
7029: my %returnhash=();
7030: if (!($rep =~ /^error/ )) {
7031: foreach my $item (@pairs) {
7032: my ($key,$value)=split(/=/,$item,2);
7033: $key = unescape($key) unless $escapedkeys;
7034: #$key = &unescape($key);
7035: next if ($key =~ /^error: 2 /);
7036: $returnhash{$key}=&thaw_unescape($value);
7037: }
7038: }
7039: return %returnhash;
7040: }
7041:
7042:
7043: # --------------------------------------------------------- dumpstore interface
7044:
7045: sub dumpstore {
7046: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
7047: # same as dump but keys must be escaped. They may contain colon separated
7048: # lists of values that may themself contain colons (e.g. symbs).
7049: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
7050: }
7051:
7052: # -------------------------------------------------------------- keys interface
7053:
7054: sub getkeys {
7055: my ($namespace,$udomain,$uname)=@_;
7056: if (!$udomain) { $udomain=$env{'user.domain'}; }
7057: if (!$uname) { $uname=$env{'user.name'}; }
7058: my $uhome=&homeserver($uname,$udomain);
7059: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
7060: my @keyarray=();
7061: foreach my $key (split(/\&/,$rep)) {
7062: next if ($key =~ /^error: 2 /);
7063: push(@keyarray,&unescape($key));
7064: }
7065: return @keyarray;
7066: }
7067:
7068: # --------------------------------------------------------------- currentdump
7069: sub currentdump {
7070: my ($courseid,$sdom,$sname)=@_;
7071: $courseid = $env{'request.course.id'} if (! defined($courseid));
7072: $sdom = $env{'user.domain'} if (! defined($sdom));
7073: $sname = $env{'user.name'} if (! defined($sname));
7074: my $uhome = &homeserver($sname,$sdom);
7075: my $rep;
7076:
7077: if (grep { $_ eq $uhome } current_machine_ids()) {
7078: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
7079: $courseid)));
7080: } else {
7081: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
7082: }
7083:
7084: return if ($rep =~ /^(error:|no_such_host)/);
7085: #
7086: my %returnhash=();
7087: #
7088: if ($rep eq 'unknown_cmd') {
7089: # an old lond will not know currentdump
7090: # Do a dump and make it look like a currentdump
7091: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
7092: return if ($tmp[0] =~ /^(error:|no_such_host)/);
7093: my %hash = @tmp;
7094: @tmp=();
7095: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
7096: } else {
7097: my @pairs=split(/\&/,$rep);
7098: foreach my $pair (@pairs) {
7099: my ($key,$value)=split(/=/,$pair,2);
7100: my ($symb,$param) = split(/:/,$key);
7101: $returnhash{&unescape($symb)}->{&unescape($param)} =
7102: &thaw_unescape($value);
7103: }
7104: }
7105: return %returnhash;
7106: }
7107:
7108: sub convert_dump_to_currentdump{
7109: my %hash = %{shift()};
7110: my %returnhash;
7111: # Code ripped from lond, essentially. The only difference
7112: # here is the unescaping done by lonnet::dump(). Conceivably
7113: # we might run in to problems with parameter names =~ /^v\./
7114: while (my ($key,$value) = each(%hash)) {
7115: my ($v,$symb,$param) = split(/:/,$key);
7116: $symb = &unescape($symb);
7117: $param = &unescape($param);
7118: next if ($v eq 'version' || $symb eq 'keys');
7119: next if (exists($returnhash{$symb}) &&
7120: exists($returnhash{$symb}->{$param}) &&
7121: $returnhash{$symb}->{'v.'.$param} > $v);
7122: $returnhash{$symb}->{$param}=$value;
7123: $returnhash{$symb}->{'v.'.$param}=$v;
7124: }
7125: #
7126: # Remove all of the keys in the hashes which keep track of
7127: # the version of the parameter.
7128: while (my ($symb,$param_hash) = each(%returnhash)) {
7129: # use a foreach because we are going to delete from the hash.
7130: foreach my $key (keys(%$param_hash)) {
7131: delete($param_hash->{$key}) if ($key =~ /^v\./);
7132: }
7133: }
7134: return \%returnhash;
7135: }
7136:
7137: # ------------------------------------------------------ critical inc interface
7138:
7139: sub cinc {
7140: return &inc(@_,'critical');
7141: }
7142:
7143: # --------------------------------------------------------------- inc interface
7144:
7145: sub inc {
7146: my ($namespace,$store,$udomain,$uname,$critical) = @_;
7147: if (!$udomain) { $udomain=$env{'user.domain'}; }
7148: if (!$uname) { $uname=$env{'user.name'}; }
7149: my $uhome=&homeserver($uname,$udomain);
7150: my $items='';
7151: if (! ref($store)) {
7152: # got a single value, so use that instead
7153: $items = &escape($store).'=&';
7154: } elsif (ref($store) eq 'SCALAR') {
7155: $items = &escape($$store).'=&';
7156: } elsif (ref($store) eq 'ARRAY') {
7157: $items = join('=&',map {&escape($_);} @{$store});
7158: } elsif (ref($store) eq 'HASH') {
7159: while (my($key,$value) = each(%{$store})) {
7160: $items.= &escape($key).'='.&escape($value).'&';
7161: }
7162: }
7163: $items=~s/\&$//;
7164: if ($critical) {
7165: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
7166: } else {
7167: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
7168: }
7169: }
7170:
7171: # --------------------------------------------------------------- put interface
7172:
7173: sub put {
7174: my ($namespace,$storehash,$udomain,$uname)=@_;
7175: if (!$udomain) { $udomain=$env{'user.domain'}; }
7176: if (!$uname) { $uname=$env{'user.name'}; }
7177: my $uhome=&homeserver($uname,$udomain);
7178: my $items='';
7179: foreach my $item (keys(%$storehash)) {
7180: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
7181: }
7182: $items=~s/\&$//;
7183: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
7184: }
7185:
7186: # ------------------------------------------------------------ newput interface
7187:
7188: sub newput {
7189: my ($namespace,$storehash,$udomain,$uname)=@_;
7190: if (!$udomain) { $udomain=$env{'user.domain'}; }
7191: if (!$uname) { $uname=$env{'user.name'}; }
7192: my $uhome=&homeserver($uname,$udomain);
7193: my $items='';
7194: foreach my $key (keys(%$storehash)) {
7195: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
7196: }
7197: $items=~s/\&$//;
7198: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
7199: }
7200:
7201: # --------------------------------------------------------- putstore interface
7202:
7203: sub putstore {
7204: my ($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog)=@_;
7205: if (!$udomain) { $udomain=$env{'user.domain'}; }
7206: if (!$uname) { $uname=$env{'user.name'}; }
7207: my $uhome=&homeserver($uname,$udomain);
7208: my $items='';
7209: foreach my $key (keys(%$storehash)) {
7210: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
7211: }
7212: $items=~s/\&$//;
7213: my $esc_symb=&escape($symb);
7214: my $esc_v=&escape($version);
7215: my $reply =
7216: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
7217: $uhome);
7218: if (($tolog) && ($reply eq 'ok')) {
7219: my $namevalue='';
7220: foreach my $key (keys(%{$storehash})) {
7221: $namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&';
7222: }
7223: $namevalue .= 'ip='.&escape($ENV{'REMOTE_ADDR'}).
7224: '&host='.&escape($perlvar{'lonHostID'}).
7225: '&version='.$esc_v.
7226: '&by='.&escape($env{'user.name'}.':'.$env{'user.domain'});
7227: &Apache::lonnet::courselog($symb.':'.$uname.':'.$udomain.':PUTSTORE:'.$namevalue);
7228: }
7229: if ($reply eq 'unknown_cmd') {
7230: # gfall back to way things use to be done
7231: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
7232: $uname);
7233: }
7234: return $reply;
7235: }
7236:
7237: sub old_putstore {
7238: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
7239: if (!$udomain) { $udomain=$env{'user.domain'}; }
7240: if (!$uname) { $uname=$env{'user.name'}; }
7241: my $uhome=&homeserver($uname,$udomain);
7242: my %newstorehash;
7243: foreach my $item (keys(%$storehash)) {
7244: my $key = $version.':'.&escape($symb).':'.$item;
7245: $newstorehash{$key} = $storehash->{$item};
7246: }
7247: my $items='';
7248: my %allitems = ();
7249: foreach my $item (keys(%newstorehash)) {
7250: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
7251: my $key = $1.':keys:'.$2;
7252: $allitems{$key} .= $3.':';
7253: }
7254: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
7255: }
7256: foreach my $item (keys(%allitems)) {
7257: $allitems{$item} =~ s/\:$//;
7258: $items.= $item.'='.$allitems{$item}.'&';
7259: }
7260: $items=~s/\&$//;
7261: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
7262: }
7263:
7264: # ------------------------------------------------------ critical put interface
7265:
7266: sub cput {
7267: my ($namespace,$storehash,$udomain,$uname)=@_;
7268: if (!$udomain) { $udomain=$env{'user.domain'}; }
7269: if (!$uname) { $uname=$env{'user.name'}; }
7270: my $uhome=&homeserver($uname,$udomain);
7271: my $items='';
7272: foreach my $item (keys(%$storehash)) {
7273: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
7274: }
7275: $items=~s/\&$//;
7276: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
7277: }
7278:
7279: # -------------------------------------------------------------- eget interface
7280:
7281: sub eget {
7282: my ($namespace,$storearr,$udomain,$uname)=@_;
7283: my $items='';
7284: foreach my $item (@$storearr) {
7285: $items.=&escape($item).'&';
7286: }
7287: $items=~s/\&$//;
7288: if (!$udomain) { $udomain=$env{'user.domain'}; }
7289: if (!$uname) { $uname=$env{'user.name'}; }
7290: my $uhome=&homeserver($uname,$udomain);
7291: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
7292: my @pairs=split(/\&/,$rep);
7293: my %returnhash=();
7294: my $i=0;
7295: foreach my $item (@$storearr) {
7296: $returnhash{$item}=&thaw_unescape($pairs[$i]);
7297: $i++;
7298: }
7299: return %returnhash;
7300: }
7301:
7302: # ------------------------------------------------------------ tmpput interface
7303: sub tmpput {
7304: my ($storehash,$server,$context)=@_;
7305: my $items='';
7306: foreach my $item (keys(%$storehash)) {
7307: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
7308: }
7309: $items=~s/\&$//;
7310: if (defined($context)) {
7311: $items .= ':'.&escape($context);
7312: }
7313: return &reply("tmpput:$items",$server);
7314: }
7315:
7316: # ------------------------------------------------------------ tmpget interface
7317: sub tmpget {
7318: my ($token,$server)=@_;
7319: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
7320: my $rep=&reply("tmpget:$token",$server);
7321: my %returnhash;
7322: if ($rep =~ /^(con_lost|error|no_such_host)/i) {
7323: return %returnhash;
7324: }
7325: foreach my $item (split(/\&/,$rep)) {
7326: my ($key,$value)=split(/=/,$item);
7327: $returnhash{&unescape($key)}=&thaw_unescape($value);
7328: }
7329: return %returnhash;
7330: }
7331:
7332: # ------------------------------------------------------------ tmpdel interface
7333: sub tmpdel {
7334: my ($token,$server)=@_;
7335: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
7336: return &reply("tmpdel:$token",$server);
7337: }
7338:
7339: # ------------------------------------------------------------ get_timebased_id
7340:
7341: sub get_timebased_id {
7342: my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
7343: $maxtries) = @_;
7344: my ($newid,$error,$dellock);
7345: unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
7346: return ('','ok','invalid call to get suffix');
7347: }
7348:
7349: # set defaults for any optional args for which values were not supplied
7350: if ($who eq '') {
7351: $who = $env{'user.name'}.':'.$env{'user.domain'};
7352: }
7353: if (!$locktries) {
7354: $locktries = 3;
7355: }
7356: if (!$maxtries) {
7357: $maxtries = 10;
7358: }
7359:
7360: if (($cdom eq '') || ($cnum eq '')) {
7361: if ($env{'request.course.id'}) {
7362: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7363: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7364: }
7365: if (($cdom eq '') || ($cnum eq '')) {
7366: return ('','ok','call to get suffix not in course context');
7367: }
7368: }
7369:
7370: # construct locking item
7371: my $lockhash = {
7372: $prefix."\0".'locked_'.$keyid => $who,
7373: };
7374: my $tries = 0;
7375:
7376: # attempt to get lock on nohist_$namespace file
7377: my $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
7378: while (($gotlock ne 'ok') && $tries <$locktries) {
7379: $tries ++;
7380: sleep 1;
7381: $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
7382: }
7383:
7384: # attempt to get unique identifier, based on current timestamp
7385: if ($gotlock eq 'ok') {
7386: my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
7387: my $id = time;
7388: $newid = $id;
7389: if ($idtype eq 'addcode') {
7390: $newid .= &sixnum_code();
7391: }
7392: my $idtries = 0;
7393: while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
7394: if ($idtype eq 'concat') {
7395: $newid = $id.$idtries;
7396: } elsif ($idtype eq 'addcode') {
7397: $newid = $newid.&sixnum_code();
7398: } else {
7399: $newid ++;
7400: }
7401: $idtries ++;
7402: }
7403: if (!exists($inuse{$prefix."\0".$newid})) {
7404: my %new_item = (
7405: $prefix."\0".$newid => $who,
7406: );
7407: my $putresult = &Apache::lonnet::put('nohist_'.$namespace,\%new_item,
7408: $cdom,$cnum);
7409: if ($putresult ne 'ok') {
7410: undef($newid);
7411: $error = 'error saving new item: '.$putresult;
7412: }
7413: } else {
7414: undef($newid);
7415: $error = ('error: no unique suffix available for the new item ');
7416: }
7417: # remove lock
7418: my @del_lock = ($prefix."\0".'locked_'.$keyid);
7419: $dellock = &Apache::lonnet::del('nohist_'.$namespace,\@del_lock,$cdom,$cnum);
7420: } else {
7421: $error = "error: could not obtain lockfile\n";
7422: $dellock = 'ok';
7423: if (($prefix eq 'paste') && ($namespace eq 'courseeditor') && ($keyid eq 'num')) {
7424: $dellock = 'nolock';
7425: }
7426: }
7427: return ($newid,$dellock,$error);
7428: }
7429:
7430: sub sixnum_code {
7431: my $code;
7432: for (0..6) {
7433: $code .= int( rand(9) );
7434: }
7435: return $code;
7436: }
7437:
7438: # -------------------------------------------------- portfolio access checking
7439:
7440: sub portfolio_access {
7441: my ($requrl,$clientip) = @_;
7442: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
7443: my $result = &get_portfolio_access($udom,$unum,$file_name,$group,$clientip);
7444: if ($result) {
7445: my %setters;
7446: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
7447: my ($startblock,$endblock) =
7448: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
7449: if ($startblock && $endblock) {
7450: return 'B';
7451: }
7452: } else {
7453: my ($startblock,$endblock) =
7454: &Apache::loncommon::blockcheck(\%setters,'port');
7455: if ($startblock && $endblock) {
7456: return 'B';
7457: }
7458: }
7459: }
7460: if ($result eq 'ok') {
7461: return 'F';
7462: } elsif ($result =~ /^[^:]+:guest_/) {
7463: return 'A';
7464: }
7465: return '';
7466: }
7467:
7468: sub get_portfolio_access {
7469: my ($udom,$unum,$file_name,$group,$clientip,$access_hash) = @_;
7470:
7471: if (!ref($access_hash)) {
7472: my $current_perms = &get_portfile_permissions($udom,$unum);
7473: my %access_controls = &get_access_controls($current_perms,$group,
7474: $file_name);
7475: $access_hash = $access_controls{$file_name};
7476: }
7477:
7478: my ($public,$guest,@domains,@users,@courses,@groups,@ips);
7479: my $now = time;
7480: if (ref($access_hash) eq 'HASH') {
7481: foreach my $key (keys(%{$access_hash})) {
7482: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
7483: if ($start > $now) {
7484: next;
7485: }
7486: if ($end && $end<$now) {
7487: next;
7488: }
7489: if ($scope eq 'public') {
7490: $public = $key;
7491: last;
7492: } elsif ($scope eq 'guest') {
7493: $guest = $key;
7494: } elsif ($scope eq 'domains') {
7495: push(@domains,$key);
7496: } elsif ($scope eq 'users') {
7497: push(@users,$key);
7498: } elsif ($scope eq 'course') {
7499: push(@courses,$key);
7500: } elsif ($scope eq 'group') {
7501: push(@groups,$key);
7502: } elsif ($scope eq 'ip') {
7503: push(@ips,$key);
7504: }
7505: }
7506: if ($public) {
7507: return 'ok';
7508: } elsif (@ips > 0) {
7509: my $allowed;
7510: foreach my $ipkey (@ips) {
7511: if (ref($access_hash->{$ipkey}{'ip'}) eq 'ARRAY') {
7512: if (&Apache::loncommon::check_ip_acc(join(',',@{$access_hash->{$ipkey}{'ip'}}),$clientip)) {
7513: $allowed = 1;
7514: last;
7515: }
7516: }
7517: }
7518: if ($allowed) {
7519: return 'ok';
7520: }
7521: }
7522: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
7523: if ($guest) {
7524: return $guest;
7525: }
7526: } else {
7527: if (@domains > 0) {
7528: foreach my $domkey (@domains) {
7529: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
7530: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
7531: return 'ok';
7532: }
7533: }
7534: }
7535: }
7536: if (@users > 0) {
7537: foreach my $userkey (@users) {
7538: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
7539: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
7540: if (ref($item) eq 'HASH') {
7541: if (($item->{'uname'} eq $env{'user.name'}) &&
7542: ($item->{'udom'} eq $env{'user.domain'})) {
7543: return 'ok';
7544: }
7545: }
7546: }
7547: }
7548: }
7549: }
7550: my %roleshash;
7551: my @courses_and_groups = @courses;
7552: push(@courses_and_groups,@groups);
7553: if (@courses_and_groups > 0) {
7554: my (%allgroups,%allroles);
7555: my ($start,$end,$role,$sec,$group);
7556: foreach my $envkey (%env) {
7557: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
7558: my $cid = $2.'_'.$3;
7559: if ($1 eq 'gr') {
7560: $group = $4;
7561: $allgroups{$cid}{$group} = $env{$envkey};
7562: } else {
7563: if ($4 eq '') {
7564: $sec = 'none';
7565: } else {
7566: $sec = $4;
7567: }
7568: $allroles{$cid}{$1}{$sec} = $env{$envkey};
7569: }
7570: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
7571: my $cid = $2.'_'.$3;
7572: if ($4 eq '') {
7573: $sec = 'none';
7574: } else {
7575: $sec = $4;
7576: }
7577: $allroles{$cid}{$1}{$sec} = $env{$envkey};
7578: }
7579: }
7580: if (keys(%allroles) == 0) {
7581: return;
7582: }
7583: foreach my $key (@courses_and_groups) {
7584: my %content = %{$$access_hash{$key}};
7585: my $cnum = $content{'number'};
7586: my $cdom = $content{'domain'};
7587: my $cid = $cdom.'_'.$cnum;
7588: if (!exists($allroles{$cid})) {
7589: next;
7590: }
7591: foreach my $role_id (keys(%{$content{'roles'}})) {
7592: my @sections = @{$content{'roles'}{$role_id}{'section'}};
7593: my @groups = @{$content{'roles'}{$role_id}{'group'}};
7594: my @status = @{$content{'roles'}{$role_id}{'access'}};
7595: my @roles = @{$content{'roles'}{$role_id}{'role'}};
7596: foreach my $role (keys(%{$allroles{$cid}})) {
7597: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
7598: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
7599: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
7600: if (grep/^all$/,@sections) {
7601: return 'ok';
7602: } else {
7603: if (grep/^$sec$/,@sections) {
7604: return 'ok';
7605: }
7606: }
7607: }
7608: }
7609: if (keys(%{$allgroups{$cid}}) == 0) {
7610: if (grep/^none$/,@groups) {
7611: return 'ok';
7612: }
7613: } else {
7614: if (grep/^all$/,@groups) {
7615: return 'ok';
7616: }
7617: foreach my $group (keys(%{$allgroups{$cid}})) {
7618: if (grep/^$group$/,@groups) {
7619: return 'ok';
7620: }
7621: }
7622: }
7623: }
7624: }
7625: }
7626: }
7627: }
7628: if ($guest) {
7629: return $guest;
7630: }
7631: }
7632: }
7633: return;
7634: }
7635:
7636: sub course_group_datechecker {
7637: my ($dates,$now,$status) = @_;
7638: my ($start,$end) = split(/\./,$dates);
7639: if (!$start && !$end) {
7640: return 'ok';
7641: }
7642: if (grep/^active$/,@{$status}) {
7643: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
7644: return 'ok';
7645: }
7646: }
7647: if (grep/^previous$/,@{$status}) {
7648: if ($end > $now ) {
7649: return 'ok';
7650: }
7651: }
7652: if (grep/^future$/,@{$status}) {
7653: if ($start > $now) {
7654: return 'ok';
7655: }
7656: }
7657: return;
7658: }
7659:
7660: sub parse_portfolio_url {
7661: my ($url) = @_;
7662:
7663: my ($type,$udom,$unum,$group,$file_name);
7664:
7665: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
7666: $type = 1;
7667: $udom = $1;
7668: $unum = $2;
7669: $file_name = $3;
7670: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
7671: $type = 2;
7672: $udom = $1;
7673: $unum = $2;
7674: $group = $3;
7675: $file_name = $3.'/'.$4;
7676: }
7677: if (wantarray) {
7678: return ($type,$udom,$unum,$file_name,$group);
7679: }
7680: return $type;
7681: }
7682:
7683: sub is_portfolio_url {
7684: my ($url) = @_;
7685: return scalar(&parse_portfolio_url($url));
7686: }
7687:
7688: sub is_portfolio_file {
7689: my ($file) = @_;
7690: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
7691: return 1;
7692: }
7693: return;
7694: }
7695:
7696: sub usertools_access {
7697: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
7698: my ($access,%tools);
7699: if ($context eq '') {
7700: $context = 'tools';
7701: }
7702: if ($context eq 'requestcourses') {
7703: %tools = (
7704: official => 1,
7705: unofficial => 1,
7706: community => 1,
7707: textbook => 1,
7708: placement => 1,
7709: lti => 1,
7710: );
7711: } elsif ($context eq 'requestauthor') {
7712: %tools = (
7713: requestauthor => 1,
7714: );
7715: } else {
7716: %tools = (
7717: aboutme => 1,
7718: blog => 1,
7719: webdav => 1,
7720: portfolio => 1,
7721: );
7722: }
7723: return if (!defined($tools{$tool}));
7724:
7725: if (($udom eq '') || ($uname eq '')) {
7726: $udom = $env{'user.domain'};
7727: $uname = $env{'user.name'};
7728: }
7729:
7730: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7731: if ($action ne 'reload') {
7732: if ($context eq 'requestcourses') {
7733: return $env{'environment.canrequest.'.$tool};
7734: } elsif ($context eq 'requestauthor') {
7735: return $env{'environment.canrequest.author'};
7736: } else {
7737: return $env{'environment.availabletools.'.$tool};
7738: }
7739: }
7740: }
7741:
7742: my ($toolstatus,$inststatus,$envkey);
7743: if ($context eq 'requestauthor') {
7744: $envkey = $context;
7745: } else {
7746: $envkey = $context.'.'.$tool;
7747: }
7748:
7749: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
7750: ($action ne 'reload')) {
7751: $toolstatus = $env{'environment.'.$envkey};
7752: $inststatus = $env{'environment.inststatus'};
7753: } else {
7754: if (ref($userenvref) eq 'HASH') {
7755: $toolstatus = $userenvref->{$envkey};
7756: $inststatus = $userenvref->{'inststatus'};
7757: } else {
7758: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
7759: $toolstatus = $userenv{$envkey};
7760: $inststatus = $userenv{'inststatus'};
7761: }
7762: }
7763:
7764: if ($toolstatus ne '') {
7765: if ($toolstatus) {
7766: $access = 1;
7767: } else {
7768: $access = 0;
7769: }
7770: return $access;
7771: }
7772:
7773: my ($is_adv,%domdef);
7774: if (ref($is_advref) eq 'HASH') {
7775: $is_adv = $is_advref->{'is_adv'};
7776: } else {
7777: $is_adv = &is_advanced_user($udom,$uname);
7778: }
7779: if (ref($domdefref) eq 'HASH') {
7780: %domdef = %{$domdefref};
7781: } else {
7782: %domdef = &get_domain_defaults($udom);
7783: }
7784: if (ref($domdef{$tool}) eq 'HASH') {
7785: if ($is_adv) {
7786: if ($domdef{$tool}{'_LC_adv'} ne '') {
7787: if ($domdef{$tool}{'_LC_adv'}) {
7788: $access = 1;
7789: } else {
7790: $access = 0;
7791: }
7792: return $access;
7793: }
7794: }
7795: if ($inststatus ne '') {
7796: my ($hasaccess,$hasnoaccess);
7797: foreach my $affiliation (split(/:/,$inststatus)) {
7798: if ($domdef{$tool}{$affiliation} ne '') {
7799: if ($domdef{$tool}{$affiliation}) {
7800: $hasaccess = 1;
7801: } else {
7802: $hasnoaccess = 1;
7803: }
7804: }
7805: }
7806: if ($hasaccess || $hasnoaccess) {
7807: if ($hasaccess) {
7808: $access = 1;
7809: } elsif ($hasnoaccess) {
7810: $access = 0;
7811: }
7812: return $access;
7813: }
7814: } else {
7815: if ($domdef{$tool}{'default'} ne '') {
7816: if ($domdef{$tool}{'default'}) {
7817: $access = 1;
7818: } elsif ($domdef{$tool}{'default'} == 0) {
7819: $access = 0;
7820: }
7821: return $access;
7822: }
7823: }
7824: } else {
7825: if (($context eq 'tools') && ($tool ne 'webdav')) {
7826: $access = 1;
7827: } else {
7828: $access = 0;
7829: }
7830: return $access;
7831: }
7832: }
7833:
7834: sub is_course_owner {
7835: my ($cdom,$cnum,$udom,$uname) = @_;
7836: if (($udom eq '') || ($uname eq '')) {
7837: $udom = $env{'user.domain'};
7838: $uname = $env{'user.name'};
7839: }
7840: unless (($udom eq '') || ($uname eq '')) {
7841: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
7842: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
7843: return 1;
7844: } else {
7845: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
7846: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
7847: return 1;
7848: }
7849: }
7850: }
7851: }
7852: return;
7853: }
7854:
7855: sub is_advanced_user {
7856: my ($udom,$uname) = @_;
7857: if ($udom ne '' && $uname ne '') {
7858: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
7859: if (wantarray) {
7860: return ($env{'user.adv'},$env{'user.author'});
7861: } else {
7862: return $env{'user.adv'};
7863: }
7864: }
7865: }
7866: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
7867: my %allroles;
7868: my ($is_adv,$is_author);
7869: foreach my $role (keys(%roleshash)) {
7870: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
7871: my $area = '/'.$tdomain.'/'.$trest;
7872: if ($sec ne '') {
7873: $area .= '/'.$sec;
7874: }
7875: if (($area ne '') && ($trole ne '')) {
7876: my $spec=$trole.'.'.$area;
7877: if ($trole =~ /^cr\//) {
7878: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
7879: } elsif ($trole ne 'gr') {
7880: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
7881: }
7882: if ($trole eq 'au') {
7883: $is_author = 1;
7884: }
7885: }
7886: }
7887: foreach my $role (keys(%allroles)) {
7888: last if ($is_adv);
7889: foreach my $item (split(/:/,$allroles{$role})) {
7890: if ($item ne '') {
7891: my ($privilege,$restrictions)=split(/&/,$item);
7892: if ($privilege eq 'adv') {
7893: $is_adv = 1;
7894: last;
7895: }
7896: }
7897: }
7898: }
7899: if (wantarray) {
7900: return ($is_adv,$is_author);
7901: }
7902: return $is_adv;
7903: }
7904:
7905: sub check_can_request {
7906: my ($dom,$can_request,$request_domains,$uname,$udom) = @_;
7907: my $canreq = 0;
7908: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
7909: $uname = $env{'user.name'};
7910: $udom = $env{'user.domain'};
7911: }
7912: my ($types,$typename) = &Apache::loncommon::course_types();
7913: my @options = ('approval','validate','autolimit');
7914: my $optregex = join('|',@options);
7915: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
7916: foreach my $type (@{$types}) {
7917: if (&usertools_access($uname,$udom,$type,undef,
7918: 'requestcourses')) {
7919: $canreq ++;
7920: if (ref($request_domains) eq 'HASH') {
7921: push(@{$request_domains->{$type}},$udom);
7922: }
7923: if ($dom eq $udom) {
7924: $can_request->{$type} = 1;
7925: }
7926: }
7927: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '') &&
7928: ($env{'environment.reqcrsotherdom.'.$type} ne '')) {
7929: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
7930: if (@curr > 0) {
7931: foreach my $item (@curr) {
7932: if (ref($request_domains) eq 'HASH') {
7933: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
7934: if ($otherdom ne '') {
7935: if (ref($request_domains->{$type}) eq 'ARRAY') {
7936: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
7937: push(@{$request_domains->{$type}},$otherdom);
7938: }
7939: } else {
7940: push(@{$request_domains->{$type}},$otherdom);
7941: }
7942: }
7943: }
7944: }
7945: unless ($dom eq $env{'user.domain'}) {
7946: $canreq ++;
7947: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
7948: $can_request->{$type} = 1;
7949: }
7950: }
7951: }
7952: }
7953: }
7954: }
7955: return $canreq;
7956: }
7957:
7958: # ---------------------------------------------- Custom access rule evaluation
7959:
7960: sub customaccess {
7961: my ($priv,$uri)=@_;
7962: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
7963: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
7964: $udom = &LONCAPA::clean_domain($udom);
7965: $ucrs = &LONCAPA::clean_username($ucrs);
7966: my $access=0;
7967: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
7968: my ($effect,$realm,$role,$type)=split(/\:/,$right);
7969: if ($type eq 'user') {
7970: foreach my $scope (split(/\s*\,\s*/,$realm)) {
7971: my ($tdom,$tuname)=split(m{/},$scope);
7972: if ($tdom) {
7973: if ($tdom ne $env{'user.domain'}) { next; }
7974: }
7975: if ($tuname) {
7976: if ($tuname ne $env{'user.name'}) { next; }
7977: }
7978: $access=($effect eq 'allow');
7979: last;
7980: }
7981: } else {
7982: if ($role) {
7983: if ($role ne $urole) { next; }
7984: }
7985: foreach my $scope (split(/\s*\,\s*/,$realm)) {
7986: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
7987: if ($tdom) {
7988: if ($tdom ne $udom) { next; }
7989: }
7990: if ($tcrs) {
7991: if ($tcrs ne $ucrs) { next; }
7992: }
7993: if ($tsec) {
7994: if ($tsec ne $usec) { next; }
7995: }
7996: $access=($effect eq 'allow');
7997: last;
7998: }
7999: if ($realm eq '' && $role eq '') {
8000: $access=($effect eq 'allow');
8001: }
8002: }
8003: }
8004: return $access;
8005: }
8006:
8007: # ------------------------------------------------- Check for a user privilege
8008:
8009: sub allowed {
8010: my ($priv,$uri,$symb,$role,$clientip,$noblockcheck)=@_;
8011: my $ver_orguri=$uri;
8012: $uri=&deversion($uri);
8013: my $orguri=$uri;
8014: $uri=&declutter($uri);
8015:
8016: if ($priv eq 'evb') {
8017: # Evade communication block restrictions for specified role in a course
8018: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
8019: return $1;
8020: } else {
8021: return;
8022: }
8023: }
8024:
8025: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
8026: # Free bre access to adm and meta resources
8027: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard|ext\.tool)$}))
8028: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
8029: && ($priv eq 'bre')) {
8030: return 'F';
8031: }
8032:
8033: # Free bre access to user's own portfolio contents
8034: my ($space,$domain,$name,@dir)=split('/',$uri);
8035: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
8036: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
8037: my %setters;
8038: my ($startblock,$endblock) =
8039: &Apache::loncommon::blockcheck(\%setters,'port');
8040: if ($startblock && $endblock) {
8041: return 'B';
8042: } else {
8043: return 'F';
8044: }
8045: }
8046:
8047: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
8048: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
8049: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
8050: if (exists($env{'request.course.id'})) {
8051: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8052: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
8053: if (($domain eq $cdom) && ($name eq $cnum)) {
8054: my $courseprivid=$env{'request.course.id'};
8055: $courseprivid=~s/\_/\//;
8056: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
8057: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
8058: return $1;
8059: } else {
8060: if ($env{'request.course.sec'}) {
8061: $courseprivid.='/'.$env{'request.course.sec'};
8062: }
8063: if ($env{'user.priv.'.$env{'request.role'}.'./'.
8064: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
8065: return $2;
8066: }
8067: }
8068: }
8069: }
8070: }
8071:
8072: # Free bre to public access
8073:
8074: if ($priv eq 'bre') {
8075: my $copyright;
8076: unless ($uri =~ /ext\.tool/) {
8077: $copyright=&metadata($uri,'copyright');
8078: }
8079: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
8080: return 'F';
8081: }
8082: if ($copyright eq 'priv') {
8083: $uri=~/([^\/]+)\/([^\/]+)\//;
8084: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
8085: return '';
8086: }
8087: }
8088: if ($copyright eq 'domain') {
8089: $uri=~/([^\/]+)\/([^\/]+)\//;
8090: unless (($env{'user.domain'} eq $1) ||
8091: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
8092: return '';
8093: }
8094: }
8095: if ($env{'request.role'}=~ /li\.\//) {
8096: # Library role, so allow browsing of resources in this domain.
8097: return 'F';
8098: }
8099: if ($copyright eq 'custom') {
8100: unless (&customaccess($priv,$uri)) { return ''; }
8101: }
8102: }
8103: # Domain coordinator is trying to create a course
8104: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
8105: # uri is the requested domain in this case.
8106: # comparison to 'request.role.domain' shows if the user has selected
8107: # a role of dc for the domain in question.
8108: return 'F' if ($uri eq $env{'request.role.domain'});
8109: }
8110:
8111: my $thisallowed='';
8112: my $statecond=0;
8113: my $courseprivid='';
8114:
8115: my $ownaccess;
8116: # Community Coordinator or Assistant Co-author browsing resource space.
8117: if (($priv eq 'bro') && ($env{'user.author'})) {
8118: if ($uri eq '') {
8119: $ownaccess = 1;
8120: } else {
8121: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
8122: my $udom = $env{'user.domain'};
8123: my $uname = $env{'user.name'};
8124: if ($uri =~ m{^\Q$udom\E/?$}) {
8125: $ownaccess = 1;
8126: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
8127: unless ($uri =~ m{\.\./}) {
8128: $ownaccess = 1;
8129: }
8130: } elsif (($udom ne 'public') && ($uname ne 'public')) {
8131: my $now = time;
8132: if ($uri =~ m{^([^/]+)/?$}) {
8133: my $adom = $1;
8134: foreach my $key (keys(%env)) {
8135: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
8136: my ($start,$end) = split('.',$env{$key});
8137: if (($now >= $start) && (!$end || $end < $now)) {
8138: $ownaccess = 1;
8139: last;
8140: }
8141: }
8142: }
8143: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
8144: my $adom = $1;
8145: my $aname = $2;
8146: foreach my $role ('ca','aa') {
8147: if ($env{"user.role.$role./$adom/$aname"}) {
8148: my ($start,$end) =
8149: split('.',$env{"user.role.$role./$adom/$aname"});
8150: if (($now >= $start) && (!$end || $end < $now)) {
8151: $ownaccess = 1;
8152: last;
8153: }
8154: }
8155: }
8156: }
8157: }
8158: }
8159: }
8160: }
8161:
8162: # Course
8163:
8164: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
8165: unless (($priv eq 'bro') && (!$ownaccess)) {
8166: $thisallowed.=$1;
8167: }
8168: }
8169:
8170: # Domain
8171:
8172: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
8173: =~/\Q$priv\E\&([^\:]*)/) {
8174: unless (($priv eq 'bro') && (!$ownaccess)) {
8175: $thisallowed.=$1;
8176: }
8177: }
8178:
8179: # User who is not author or co-author might still be able to edit
8180: # resource of an author in the domain (e.g., if Domain Coordinator).
8181: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
8182: (&allowed('mdc',$env{'request.course.id'}))) {
8183: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
8184: $thisallowed.=$1;
8185: }
8186: }
8187:
8188: # Course: uri itself is a course
8189: my $courseuri=$uri;
8190: $courseuri=~s/\_(\d)/\/$1/;
8191: $courseuri=~s/^([^\/])/\/$1/;
8192:
8193: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
8194: =~/\Q$priv\E\&([^\:]*)/) {
8195: if ($priv eq 'mip') {
8196: my $rem = $1;
8197: if (($uri ne '') && ($env{'request.course.id'} eq $uri) &&
8198: ($env{'course.'.$env{'request.course.id'}.'.internal.courseowner'} eq $env{'user.name'}.':'.$env{'user.domain'})) {
8199: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8200: if ($cdom ne '') {
8201: my %passwdconf = &get_passwdconf($cdom);
8202: if (ref($passwdconf{'crsownerchg'}) eq 'HASH') {
8203: if (ref($passwdconf{'crsownerchg'}{'by'}) eq 'ARRAY') {
8204: if (@{$passwdconf{'crsownerchg'}{'by'}}) {
8205: my @inststatuses = split(':',$env{'environment.inststatus'});
8206: unless (@inststatuses) {
8207: @inststatuses = ('default');
8208: }
8209: foreach my $status (@inststatuses) {
8210: if (grep(/^\Q$status\E$/,@{$passwdconf{'crsownerchg'}{'by'}})) {
8211: $thisallowed.=$rem;
8212: }
8213: }
8214: }
8215: }
8216: }
8217: }
8218: }
8219: } else {
8220: unless (($priv eq 'bro') && (!$ownaccess)) {
8221: $thisallowed.=$1;
8222: }
8223: }
8224: }
8225:
8226: # URI is an uploaded document for this course, default permissions don't matter
8227: # not allowing 'edit' access (editupload) to uploaded course docs
8228: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
8229: $thisallowed='';
8230: my ($match)=&is_on_map($uri);
8231: if ($match) {
8232: if ($env{'user.priv.'.$env{'request.role'}.'./'}
8233: =~/\Q$priv\E\&([^\:]*)/) {
8234: my $value = $1;
8235: my $deeplinkblock = &deeplink_check($priv,$symb,$uri);
8236: if ($deeplinkblock) {
8237: $thisallowed='D';
8238: } elsif ($noblockcheck) {
8239: $thisallowed.=$value;
8240: } else {
8241: my @blockers = &has_comm_blocking($priv,$symb,$uri);
8242: if (@blockers > 0) {
8243: $thisallowed = 'B';
8244: } else {
8245: $thisallowed.=$value;
8246: }
8247: }
8248: }
8249: } else {
8250: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
8251: if ($refuri) {
8252: if ($refuri =~ m|^/adm/|) {
8253: $thisallowed='F';
8254: } else {
8255: $refuri=&declutter($refuri);
8256: my ($match) = &is_on_map($refuri);
8257: if ($match) {
8258: my $deeplinkblock = &deeplink_check($priv,$symb,$refuri);
8259: if ($deeplinkblock) {
8260: $thisallowed='D';
8261: } elsif ($noblockcheck) {
8262: $thisallowed='F';
8263: } else {
8264: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
8265: if (@blockers > 0) {
8266: $thisallowed = 'B';
8267: } else {
8268: $thisallowed='F';
8269: }
8270: }
8271: }
8272: }
8273: }
8274: }
8275: }
8276:
8277: if ($priv eq 'bre'
8278: && $thisallowed ne 'F'
8279: && $thisallowed ne '2'
8280: && &is_portfolio_url($uri)) {
8281: $thisallowed = &portfolio_access($uri,$clientip);
8282: }
8283:
8284: # Full access at system, domain or course-wide level? Exit.
8285: if ($thisallowed=~/F/) {
8286: return 'F';
8287: }
8288:
8289: # If this is generating or modifying users, exit with special codes
8290:
8291: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
8292: if (($priv eq 'cca') || ($priv eq 'caa')) {
8293: my ($audom,$auname)=split('/',$uri);
8294: # no author name given, so this just checks on the general right to make a co-author in this domain
8295: unless ($auname) { return $thisallowed; }
8296: # an author name is given, so we are about to actually make a co-author for a certain account
8297: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
8298: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
8299: ($audom ne $env{'request.role.domain'}))) { return ''; }
8300: }
8301: return $thisallowed;
8302: }
8303: #
8304: # Gathered so far: system, domain and course wide privileges
8305: #
8306: # Course: See if uri or referer is an individual resource that is part of
8307: # the course
8308:
8309: if ($env{'request.course.id'}) {
8310:
8311: # If this is modifying password (internal auth) domains must match for user and user's role.
8312:
8313: if ($priv eq 'mip') {
8314: if ($env{'user.domain'} eq $env{'request.role.domain'}) {
8315: return $thisallowed;
8316: } else {
8317: return '';
8318: }
8319: }
8320:
8321: $courseprivid=$env{'request.course.id'};
8322: if ($env{'request.course.sec'}) {
8323: $courseprivid.='/'.$env{'request.course.sec'};
8324: }
8325: $courseprivid=~s/\_/\//;
8326: my $checkreferer=1;
8327: my ($match,$cond)=&is_on_map($uri);
8328: if ($match) {
8329: $statecond=$cond;
8330: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
8331: =~/\Q$priv\E\&([^\:]*)/) {
8332: my $value = $1;
8333: if ($priv eq 'bre') {
8334: if ($noblockcheck) {
8335: $thisallowed.=$value;
8336: } else {
8337: my @blockers = &has_comm_blocking($priv,$symb,$uri);
8338: if (@blockers > 0) {
8339: $thisallowed = 'B';
8340: } else {
8341: $thisallowed.=$value;
8342: }
8343: }
8344: } else {
8345: $thisallowed.=$value;
8346: }
8347: $checkreferer=0;
8348: }
8349: }
8350:
8351: if ($checkreferer) {
8352: my $refuri=$env{'httpref.'.$orguri};
8353: unless ($refuri) {
8354: foreach my $key (keys(%env)) {
8355: if ($key=~/^httpref\..*\*/) {
8356: my $pattern=$key;
8357: $pattern=~s/^httpref\.\/res\///;
8358: $pattern=~s/\*/\[\^\/\]\+/g;
8359: $pattern=~s/\//\\\//g;
8360: if ($orguri=~/$pattern/) {
8361: $refuri=$env{$key};
8362: }
8363: }
8364: }
8365: }
8366:
8367: if ($refuri) {
8368: $refuri=&declutter($refuri);
8369: my ($match,$cond)=&is_on_map($refuri);
8370: if ($match) {
8371: my $refstatecond=$cond;
8372: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
8373: =~/\Q$priv\E\&([^\:]*)/) {
8374: my $value = $1;
8375: if ($priv eq 'bre') {
8376: my $deeplinkblock = &deeplink_check($priv,$symb,$refuri);
8377: if ($deeplinkblock) {
8378: $thisallowed = 'D';
8379: } elsif ($noblockcheck) {
8380: $thisallowed.=$value;
8381: } else {
8382: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
8383: if (@blockers > 0) {
8384: $thisallowed = 'B';
8385: } else {
8386: $thisallowed.=$value;
8387: }
8388: }
8389: } else {
8390: $thisallowed.=$value;
8391: }
8392: $uri=$refuri;
8393: $statecond=$refstatecond;
8394: }
8395: }
8396: }
8397: }
8398: }
8399:
8400: #
8401: # Gathered now: all privileges that could apply, and condition number
8402: #
8403: #
8404: # Full or no access?
8405: #
8406:
8407: if ($thisallowed=~/F/) {
8408: return 'F';
8409: }
8410:
8411: unless ($thisallowed) {
8412: return '';
8413: }
8414:
8415: # Restrictions exist, deal with them
8416: #
8417: # C:according to course preferences
8418: # R:according to resource settings
8419: # L:unless locked
8420: # X:according to user session state
8421: #
8422:
8423: # Possibly locked functionality, check all courses
8424: # Locks might take effect only after 10 minutes cache expiration for other
8425: # courses, and 2 minutes for current course
8426:
8427: my $envkey;
8428: if ($thisallowed=~/L/) {
8429: foreach $envkey (keys(%env)) {
8430: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
8431: my $courseid=$2;
8432: my $roleid=$1.'.'.$2;
8433: $courseid=~s/^\///;
8434: my $expiretime=600;
8435: if ($env{'request.role'} eq $roleid) {
8436: $expiretime=120;
8437: }
8438: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
8439: my $prefix='course.'.$cdom.'_'.$cnum.'.';
8440: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
8441: &coursedescription($courseid,{'freshen_cache' => 1});
8442: }
8443: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
8444: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
8445: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
8446: &log($env{'user.domain'},$env{'user.name'},
8447: $env{'user.home'},
8448: 'Locked by res: '.$priv.' for '.$uri.' due to '.
8449: $cdom.'/'.$cnum.'/'.$csec.' expire '.
8450: $env{$prefix.'priv.'.$priv.'.lock.expire'});
8451: return '';
8452: }
8453: }
8454: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
8455: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
8456: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
8457: &log($env{'user.domain'},$env{'user.name'},
8458: $env{'user.home'},
8459: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
8460: $cdom.'/'.$cnum.'/'.$csec.' expire '.
8461: $env{$prefix.'priv.'.$priv.'.lock.expire'});
8462: return '';
8463: }
8464: }
8465: }
8466: }
8467: }
8468:
8469: #
8470: # Rest of the restrictions depend on selected course
8471: #
8472:
8473: unless ($env{'request.course.id'}) {
8474: if ($thisallowed eq 'A') {
8475: return 'A';
8476: } elsif ($thisallowed eq 'B') {
8477: return 'B';
8478: } else {
8479: return '1';
8480: }
8481: }
8482:
8483: #
8484: # Now user is definitely in a course
8485: #
8486:
8487:
8488: # Course preferences
8489:
8490: if ($thisallowed=~/C/) {
8491: my $rolecode=(split(/\./,$env{'request.role'}))[0];
8492: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
8493: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
8494: =~/\Q$rolecode\E/) {
8495: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
8496: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
8497: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
8498: $env{'request.course.id'});
8499: }
8500: return '';
8501: }
8502:
8503: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
8504: =~/\Q$unamedom\E/) {
8505: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
8506: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
8507: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
8508: $env{'request.course.id'});
8509: }
8510: return '';
8511: }
8512: }
8513:
8514: # Resource preferences
8515:
8516: if ($thisallowed=~/R/) {
8517: my $rolecode=(split(/\./,$env{'request.role'}))[0];
8518: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
8519: if (($priv ne 'pch') && ($priv ne 'plc')) {
8520: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
8521: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
8522: }
8523: return '';
8524: }
8525: }
8526:
8527: # Restricted by state or randomout?
8528:
8529: if ($thisallowed=~/X/) {
8530: if ($env{'acc.randomout'}) {
8531: if (!$symb) { $symb=&symbread($uri,1); }
8532: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
8533: return '';
8534: }
8535: }
8536: if (&condval($statecond)) {
8537: return '2';
8538: } else {
8539: return '';
8540: }
8541: }
8542:
8543: if ($thisallowed eq 'A') {
8544: return 'A';
8545: } elsif ($thisallowed eq 'B') {
8546: return 'B';
8547: } elsif ($thisallowed eq 'D') {
8548: return 'D';
8549: }
8550: return 'F';
8551: }
8552:
8553: # ------------------------------------------- Check construction space access
8554:
8555: sub constructaccess {
8556: my ($url,$setpriv)=@_;
8557:
8558: # We do not allow editing of previous versions of files
8559: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
8560:
8561: # Get username and domain from URL
8562: my ($ownername,$ownerdomain,$ownerhome);
8563:
8564: ($ownerdomain,$ownername) =
8565: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)(?:/daxepage|/daxeopen)?/priv/($match_domain)/($match_username)(?:/|$)});
8566:
8567: # The URL does not really point to any authorspace, forget it
8568: unless (($ownername) && ($ownerdomain)) { return ''; }
8569:
8570: # Now we need to see if the user has access to the authorspace of
8571: # $ownername at $ownerdomain
8572:
8573: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
8574: # Real author for this?
8575: $ownerhome = $env{'user.home'};
8576: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
8577: return ($ownername,$ownerdomain,$ownerhome);
8578: }
8579: } else {
8580: # Co-author for this?
8581: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
8582: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
8583: $ownerhome = &homeserver($ownername,$ownerdomain);
8584: return ($ownername,$ownerdomain,$ownerhome);
8585: }
8586: if ($env{'request.course.id'}) {
8587: if (($ownername eq $env{'course.'.$env{'request.course.id'}.'.num'}) &&
8588: ($ownerdomain eq $env{'course.'.$env{'request.course.id'}.'.domain'})) {
8589: if (&allowed('mdc',$env{'request.course.id'})) {
8590: $ownerhome = $env{'course.'.$env{'request.course.id'}.'.home'};
8591: return ($ownername,$ownerdomain,$ownerhome);
8592: }
8593: }
8594: }
8595: }
8596:
8597: # We don't have any access right now. If we are not possibly going to do anything about this,
8598: # we might as well leave
8599: unless ($setpriv) { return ''; }
8600:
8601: # Backdoor access?
8602: my $allowed=&allowed('eco',$ownerdomain);
8603: # Nope
8604: unless ($allowed) { return ''; }
8605: # Looks like we may have access, but could be locked by the owner of the construction space
8606: if ($allowed eq 'U') {
8607: my %blocked=&get('environment',['domcoord.author'],
8608: $ownerdomain,$ownername);
8609: # Is blocked by owner
8610: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
8611: }
8612: if (($allowed eq 'F') || ($allowed eq 'U')) {
8613: # Grant temporary access
8614: my $then=$env{'user.login.time'};
8615: my $update=$env{'user.update.time'};
8616: if (!$update) { $update = $then; }
8617: my $refresh=$env{'user.refresh.time'};
8618: if (!$refresh) { $refresh = $update; }
8619: my $now = time;
8620: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
8621: $now,'ca','constructaccess');
8622: $ownerhome = &homeserver($ownername,$ownerdomain);
8623: return($ownername,$ownerdomain,$ownerhome);
8624: }
8625: # No business here
8626: return '';
8627: }
8628:
8629: # ----------------------------------------------------------- Content Blocking
8630:
8631: {
8632: # Caches for faster Course Contents display where content blocking
8633: # is in operation (i.e., interval param set) for timed quiz.
8634: #
8635: # User for whom data are being temporarily cached.
8636: my $cacheduser='';
8637: # Cached blockers for this user (a hash of blocking items).
8638: my %cachedblockers=();
8639: # When the data were last cached.
8640: my $cachedlast='';
8641:
8642: sub load_all_blockers {
8643: my ($uname,$udom,$blocks)=@_;
8644: if (($uname ne '') && ($udom ne '')) {
8645: if (($cacheduser eq $uname.':'.$udom) &&
8646: (abs($cachedlast-time)<5)) {
8647: return;
8648: }
8649: }
8650: $cachedlast=time;
8651: $cacheduser=$uname.':'.$udom;
8652: %cachedblockers = &get_commblock_resources($blocks);
8653: }
8654:
8655: sub get_comm_blocks {
8656: my ($cdom,$cnum) = @_;
8657: if ($cdom eq '' || $cnum eq '') {
8658: return unless ($env{'request.course.id'});
8659: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
8660: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8661: }
8662: my %commblocks;
8663: my $hashid=$cdom.'_'.$cnum;
8664: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
8665: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
8666: %commblocks = %{$blocksref};
8667: } else {
8668: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
8669: my $cachetime = 600;
8670: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
8671: }
8672: return %commblocks;
8673: }
8674:
8675: sub get_commblock_resources {
8676: my ($blocks) = @_;
8677: my %blockers = ();
8678: return %blockers unless ($env{'request.course.id'});
8679: return %blockers if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
8680: my %commblocks;
8681: if (ref($blocks) eq 'HASH') {
8682: %commblocks = %{$blocks};
8683: } else {
8684: %commblocks = &get_comm_blocks();
8685: }
8686: return %blockers unless (keys(%commblocks) > 0);
8687: my $navmap = Apache::lonnavmaps::navmap->new();
8688: return %blockers unless (ref($navmap));
8689: my $now = time;
8690: foreach my $block (keys(%commblocks)) {
8691: if ($block =~ /^(\d+)____(\d+)$/) {
8692: my ($start,$end) = ($1,$2);
8693: if ($start <= $now && $end >= $now) {
8694: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
8695: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
8696: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
8697: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
8698: $blockers{$block}{maps} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
8699: }
8700: }
8701: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
8702: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
8703: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
8704: }
8705: }
8706: }
8707: }
8708: }
8709: } elsif ($block =~ /^firstaccess____(.+)$/) {
8710: my $item = $1;
8711: my @to_test;
8712: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
8713: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
8714: my @interval;
8715: my $type = 'map';
8716: if ($item eq 'course') {
8717: $type = 'course';
8718: @interval=&EXT("resource.0.interval");
8719: } else {
8720: if ($item =~ /___\d+___/) {
8721: $type = 'resource';
8722: @interval=&EXT("resource.0.interval",$item);
8723: if (ref($navmap)) {
8724: my $res = $navmap->getBySymb($item);
8725: push(@to_test,$res);
8726: }
8727: } else {
8728: my $mapsymb = &symbread($item,1);
8729: if ($mapsymb) {
8730: if (ref($navmap)) {
8731: my $mapres = $navmap->getBySymb($mapsymb);
8732: @to_test = $mapres->retrieveResources($mapres,undef,0,0,0,1);
8733: foreach my $res (@to_test) {
8734: my $symb = $res->symb();
8735: next if ($symb eq $mapsymb);
8736: if ($symb ne '') {
8737: @interval=&EXT("resource.0.interval",$symb);
8738: if ($interval[1] eq 'map') {
8739: last;
8740: }
8741: }
8742: }
8743: }
8744: }
8745: }
8746: }
8747: if ($interval[0] =~ /^(\d+)/) {
8748: my $timelimit = $1;
8749: my $first_access;
8750: if ($type eq 'resource') {
8751: $first_access=&get_first_access($interval[1],$item);
8752: } elsif ($type eq 'map') {
8753: $first_access=&get_first_access($interval[1],undef,$item);
8754: } else {
8755: $first_access=&get_first_access($interval[1]);
8756: }
8757: if ($first_access) {
8758: my $timesup = $first_access+$timelimit;
8759: if ($timesup > $now) {
8760: my $activeblock;
8761: foreach my $res (@to_test) {
8762: if ($res->answerable()) {
8763: $activeblock = 1;
8764: last;
8765: }
8766: }
8767: if ($activeblock) {
8768: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
8769: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
8770: $blockers{$block}{'maps'} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
8771: }
8772: }
8773: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
8774: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
8775: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
8776: }
8777: }
8778: }
8779: }
8780: }
8781: }
8782: }
8783: }
8784: }
8785: }
8786: return %blockers;
8787: }
8788:
8789: sub has_comm_blocking {
8790: my ($priv,$symb,$uri,$blocks) = @_;
8791: my @blockers;
8792: return unless ($env{'request.course.id'});
8793: return unless ($priv eq 'bre');
8794: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
8795: return if ($env{'request.state'} eq 'construct');
8796: &load_all_blockers($env{'user.name'},$env{'user.domain'},$blocks);
8797: return unless (keys(%cachedblockers) > 0);
8798: my (%possibles,@symbs);
8799: if (!$symb) {
8800: $symb = &symbread($uri,1,1,1,\%possibles);
8801: }
8802: if ($symb) {
8803: @symbs = ($symb);
8804: } elsif (keys(%possibles)) {
8805: @symbs = keys(%possibles);
8806: }
8807: my $noblock;
8808: foreach my $symb (@symbs) {
8809: last if ($noblock);
8810: my ($map,$resid,$resurl)=&decode_symb($symb);
8811: foreach my $block (keys(%cachedblockers)) {
8812: if ($block =~ /^firstaccess____(.+)$/) {
8813: my $item = $1;
8814: if (($item eq $map) || ($item eq $symb)) {
8815: $noblock = 1;
8816: last;
8817: }
8818: }
8819: if (ref($cachedblockers{$block}) eq 'HASH') {
8820: if (ref($cachedblockers{$block}{'resources'}) eq 'HASH') {
8821: if ($cachedblockers{$block}{'resources'}{$symb}) {
8822: unless (grep(/^\Q$block\E$/,@blockers)) {
8823: push(@blockers,$block);
8824: }
8825: }
8826: }
8827: }
8828: if (ref($cachedblockers{$block}{'maps'}) eq 'HASH') {
8829: if ($cachedblockers{$block}{'maps'}{$map}) {
8830: unless (grep(/^\Q$block\E$/,@blockers)) {
8831: push(@blockers,$block);
8832: }
8833: }
8834: }
8835: }
8836: }
8837: return if ($noblock);
8838: return @blockers;
8839: }
8840: }
8841:
8842: sub deeplink_check {
8843: my ($priv,$symb,$uri) = @_;
8844: return unless ($env{'request.course.id'});
8845: return unless ($priv eq 'bre');
8846: return if ($env{'request.state'} eq 'construct');
8847: return if ($env{'request.role.adv'});
8848: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
8849: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
8850: my (%possibles,@symbs);
8851: if (!$symb) {
8852: $symb = &symbread($uri,1,1,1,\%possibles);
8853: }
8854: if ($symb) {
8855: @symbs = ($symb);
8856: } elsif (keys(%possibles)) {
8857: @symbs = keys(%possibles);
8858: }
8859:
8860: my ($login,$switchrole,$allow);
8861: if ($env{'request.deeplink.login'} =~ m{^\Q/tiny/$cdom/\E(\w+)$}) {
8862: my $key = $1;
8863: my $tinyurl;
8864: my ($result,$cached)=&Apache::lonnet::is_cached_new('tiny',$cdom."\0".$key);
8865: if (defined($cached)) {
8866: $tinyurl = $result;
8867: } else {
8868: my $configuname = &Apache::lonnet::get_domainconfiguser($cdom);
8869: my %currtiny = &Apache::lonnet::get('tiny',[$key],$cdom,$configuname);
8870: if ($currtiny{$key} ne '') {
8871: $tinyurl = $currtiny{$key};
8872: &Apache::lonnet::do_cache_new('tiny',$cdom."\0".$key,$currtiny{$key},600);
8873: }
8874: }
8875: if ($tinyurl ne '') {
8876: my ($cnumreq,$posslogin) = split(/\&/,$tinyurl);
8877: if ($cnumreq eq $cnum) {
8878: $login = $posslogin;
8879: } else {
8880: $switchrole = 1;
8881: }
8882: }
8883: }
8884: foreach my $symb (@symbs) {
8885: last if ($allow);
8886: my $deeplink = &EXT("resource.0.deeplink",$symb);
8887: if ($deeplink eq '') {
8888: $allow = 1;
8889: } else {
8890: my ($listed,$scope,$access) = split(/,/,$deeplink);
8891: if ($access eq 'any') {
8892: $allow = 1;
8893: } elsif ($login) {
8894: if ($access eq 'only') {
8895: if ($scope eq 'res') {
8896: if ($symb eq $login) {
8897: $allow = 1;
8898: }
8899: } elsif ($scope eq 'map') {
8900: #FIXME Compare map for $env{'request.deeplink.login'} with map for $symb
8901: } elsif ($scope eq 'rec') {
8902: #FIXME Recurse up for $env{'request.deeplink.login'} with map for $symb
8903: }
8904: } else {
8905: my ($acctype,$item) = split(/:/,$access);
8906: if (($acctype eq 'lti') && ($env{'user.linkprotector'})) {
8907: if (grep(/^\Q$item\E$/,split(/,/,$env{'user.linkprotector'}))) {
8908: my %tinyurls = &get('tiny',[$symb],$cdom,$cnum);
8909: if (grep(/\Q$tinyurls{$symb}\E$/,split(/,/,$env{'user.linkproturis'}))) {
8910: $allow = 1;
8911: }
8912: }
8913: } elsif (($acctype eq 'key') && ($env{'user.deeplinkkey'})) {
8914: if (grep(/^\Q$item\E$/,split(/,/,$env{'user.deeplinkkey'}))) {
8915: my %tinyurls = &get('tiny',[$symb],$cdom,$cnum);
8916: if (grep(/\Q$tinyurls{$symb}\E$/,split(/,/,$env{'user.keyedlinkuri'}))) {
8917: $allow = 1;
8918: }
8919: }
8920: }
8921: }
8922: }
8923: }
8924: }
8925: return if ($allow);
8926: return 1;
8927: }
8928:
8929: # -------------------------------- Deversion and split uri into path an filename
8930:
8931: #
8932: # Removes the version from a URI and
8933: # splits it in to its filename and path to the filename.
8934: # Seems like File::Basename could have done this more clearly.
8935: # Parameters:
8936: # $uri - input URI
8937: # Returns:
8938: # Two element list consisting of
8939: # $pathname - the URI up to and excluding the trailing /
8940: # $filename - The part of the URI following the last /
8941: # NOTE:
8942: # Another realization of this is simply:
8943: # use File::Basename;
8944: # ...
8945: # $uri = shift;
8946: # $filename = basename($uri);
8947: # $path = dirname($uri);
8948: # return ($filename, $path);
8949: #
8950: # The implementation below is probably faster however.
8951: #
8952: sub split_uri_for_cond {
8953: my $uri=&deversion(&declutter(shift));
8954: my @uriparts=split(/\//,$uri);
8955: my $filename=pop(@uriparts);
8956: my $pathname=join('/',@uriparts);
8957: return ($pathname,$filename);
8958: }
8959: # --------------------------------------------------- Is a resource on the map?
8960:
8961: sub is_on_map {
8962: my ($pathname,$filename) = &split_uri_for_cond(shift);
8963: #Trying to find the conditional for the file
8964: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
8965: /\&\Q$filename\E\:([\d\|]+)\&/);
8966: if ($match) {
8967: return (1,$1);
8968: } else {
8969: return (0,0);
8970: }
8971: }
8972:
8973: # --------------------------------------------------------- Get symb from alias
8974:
8975: sub get_symb_from_alias {
8976: my $symb=shift;
8977: my ($map,$resid,$url)=&decode_symb($symb);
8978: # Already is a symb
8979: if ($url) { return $symb; }
8980: # Must be an alias
8981: my $aliassymb='';
8982: my %bighash;
8983: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
8984: &GDBM_READER(),0640)) {
8985: my $rid=$bighash{'mapalias_'.$symb};
8986: if ($rid) {
8987: my ($mapid,$resid)=split(/\./,$rid);
8988: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
8989: $resid,$bighash{'src_'.$rid});
8990: }
8991: untie %bighash;
8992: }
8993: return $aliassymb;
8994: }
8995:
8996: # ----------------------------------------------------------------- Define Role
8997:
8998: sub definerole {
8999: if (allowed('mcr','/')) {
9000: my ($rolename,$sysrole,$domrole,$courole,$uname,$udom)=@_;
9001: foreach my $role (split(':',$sysrole)) {
9002: my ($crole,$cqual)=split(/\&/,$role);
9003: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
9004: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
9005: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
9006: return "refused:s:$crole&$cqual";
9007: }
9008: }
9009: }
9010: foreach my $role (split(':',$domrole)) {
9011: my ($crole,$cqual)=split(/\&/,$role);
9012: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
9013: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
9014: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
9015: return "refused:d:$crole&$cqual";
9016: }
9017: }
9018: }
9019: foreach my $role (split(':',$courole)) {
9020: my ($crole,$cqual)=split(/\&/,$role);
9021: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
9022: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
9023: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
9024: return "refused:c:$crole&$cqual";
9025: }
9026: }
9027: }
9028: my $uhome;
9029: if (($uname ne '') && ($udom ne '')) {
9030: $uhome = &homeserver($uname,$udom);
9031: return $uhome if ($uhome eq 'no_host');
9032: } else {
9033: $uname = $env{'user.name'};
9034: $udom = $env{'user.domain'};
9035: $uhome = $env{'user.home'};
9036: }
9037: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
9038: "$udom:$uname:rolesdef_$rolename=".
9039: escape($sysrole.'_'.$domrole.'_'.$courole);
9040: return reply($command,$uhome);
9041: } else {
9042: return 'refused';
9043: }
9044: }
9045:
9046: # ---------------- Make a metadata query against the network of library servers
9047:
9048: sub metadata_query {
9049: my ($query,$custom,$customshow,$server_array,$domains_hash)=@_;
9050: my %rhash;
9051: my %libserv = &all_library();
9052: my @server_list = (defined($server_array) ? @$server_array
9053: : keys(%libserv) );
9054: for my $server (@server_list) {
9055: my $domains = '';
9056: if (ref($domains_hash) eq 'HASH') {
9057: $domains = $domains_hash->{$server};
9058: }
9059: unless ($custom or $customshow) {
9060: my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server);
9061: $rhash{$server}=$reply;
9062: }
9063: else {
9064: my $reply=&reply("querysend:".&escape($query).':'.
9065: &escape($custom).':'.&escape($customshow).':'.&escape($domains),
9066: $server);
9067: $rhash{$server}=$reply;
9068: }
9069: }
9070: return \%rhash;
9071: }
9072:
9073: # ----------------------------------------- Send log queries and wait for reply
9074:
9075: sub log_query {
9076: my ($uname,$udom,$query,%filters)=@_;
9077: my $uhome=&homeserver($uname,$udom);
9078: if ($uhome eq 'no_host') { return 'error: no_host'; }
9079: my $uhost=&hostname($uhome);
9080: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
9081: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
9082: $uhome);
9083: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
9084: return get_query_reply($queryid);
9085: }
9086:
9087: # -------------------------- Update MySQL table for portfolio file
9088:
9089: sub update_portfolio_table {
9090: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
9091: if ($group ne '') {
9092: $file_name =~s /^\Q$group\E//;
9093: }
9094: my $homeserver = &homeserver($uname,$udom);
9095: my $queryid=
9096: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
9097: ':'.&escape($file_name).':'.$action,$homeserver);
9098: my $reply = &get_query_reply($queryid);
9099: return $reply;
9100: }
9101:
9102: # -------------------------- Update MySQL allusers table
9103:
9104: sub update_allusers_table {
9105: my ($uname,$udom,$names) = @_;
9106: my $homeserver = &homeserver($uname,$udom);
9107: my $queryid=
9108: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
9109: 'lastname='.&escape($names->{'lastname'}).'%%'.
9110: 'firstname='.&escape($names->{'firstname'}).'%%'.
9111: 'middlename='.&escape($names->{'middlename'}).'%%'.
9112: 'generation='.&escape($names->{'generation'}).'%%'.
9113: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
9114: 'id='.&escape($names->{'id'}),$homeserver);
9115: return;
9116: }
9117:
9118: # ------- Request retrieval of institutional classlists for course(s)
9119:
9120: sub fetch_enrollment_query {
9121: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
9122: my ($homeserver,$sleep,$loopmax);
9123: my $maxtries = 1;
9124: if ($context eq 'automated') {
9125: $homeserver = $perlvar{'lonHostID'};
9126: $sleep = 2;
9127: $loopmax = 100;
9128: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
9129: } else {
9130: $homeserver = &homeserver($cnum,$dom);
9131: }
9132: my $host=&hostname($homeserver);
9133: my $cmd = '';
9134: foreach my $affiliate (keys(%{$affiliatesref})) {
9135: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
9136: }
9137: $cmd =~ s/%%$//;
9138: $cmd = &escape($cmd);
9139: my $query = 'fetchenrollment';
9140: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
9141: unless ($queryid=~/^\Q$host\E\_/) {
9142: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
9143: return 'error: '.$queryid;
9144: }
9145: my $reply = &get_query_reply($queryid,$sleep,$loopmax);
9146: my $tries = 1;
9147: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
9148: $reply = &get_query_reply($queryid,$sleep,$loopmax);
9149: $tries ++;
9150: }
9151: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
9152: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
9153: } else {
9154: my @responses = split(/:/,$reply);
9155: if (grep { $_ eq $homeserver } ¤t_machine_ids()) {
9156: foreach my $line (@responses) {
9157: my ($key,$value) = split(/=/,$line,2);
9158: $$replyref{$key} = $value;
9159: }
9160: } else {
9161: my $pathname = LONCAPA::tempdir();
9162: foreach my $line (@responses) {
9163: my ($key,$value) = split(/=/,$line);
9164: $$replyref{$key} = $value;
9165: if ($value > 0) {
9166: foreach my $item (@{$$affiliatesref{$key}}) {
9167: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
9168: my $destname = $pathname.'/'.$filename;
9169: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
9170: if ($xml_classlist =~ /^error/) {
9171: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
9172: } else {
9173: if ( open(FILE,">",$destname) ) {
9174: print FILE &unescape($xml_classlist);
9175: close(FILE);
9176: } else {
9177: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
9178: }
9179: }
9180: }
9181: }
9182: }
9183: }
9184: return 'ok';
9185: }
9186: return 'error';
9187: }
9188:
9189: sub get_query_reply {
9190: my ($queryid,$sleep,$loopmax) = @_;;
9191: if (($sleep eq '') || ($sleep !~ /^\d+\.?\d*$/)) {
9192: $sleep = 0.2;
9193: }
9194: if (($loopmax eq '') || ($loopmax =~ /\D/)) {
9195: $loopmax = 100;
9196: }
9197: my $replyfile=LONCAPA::tempdir().$queryid;
9198: my $reply='';
9199: for (1..$loopmax) {
9200: sleep($sleep);
9201: if (-e $replyfile.'.end') {
9202: if (open(my $fh,"<",$replyfile)) {
9203: $reply = join('',<$fh>);
9204: close($fh);
9205: } else { return 'error: reply_file_error'; }
9206: return &unescape($reply);
9207: }
9208: }
9209: return 'timeout:'.$queryid;
9210: }
9211:
9212: sub courselog_query {
9213: #
9214: # possible filters:
9215: # url: url or symb
9216: # username
9217: # domain
9218: # action: view, submit, grade
9219: # start: timestamp
9220: # end: timestamp
9221: #
9222: my (%filters)=@_;
9223: unless ($env{'request.course.id'}) { return 'no_course'; }
9224: if ($filters{'url'}) {
9225: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
9226: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
9227: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
9228: }
9229: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
9230: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
9231: return &log_query($cname,$cdom,'courselog',%filters);
9232: }
9233:
9234: sub userlog_query {
9235: #
9236: # possible filters:
9237: # action: log check role
9238: # start: timestamp
9239: # end: timestamp
9240: #
9241: my ($uname,$udom,%filters)=@_;
9242: return &log_query($uname,$udom,'userlog',%filters);
9243: }
9244:
9245: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
9246:
9247: sub auto_run {
9248: my ($cnum,$cdom) = @_;
9249: my $response = 0;
9250: my $settings;
9251: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
9252: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
9253: $settings = $domconfig{'autoenroll'};
9254: if ($settings->{'run'} eq '1') {
9255: $response = 1;
9256: }
9257: } else {
9258: my $homeserver;
9259: if (&is_course($cdom,$cnum)) {
9260: $homeserver = &homeserver($cnum,$cdom);
9261: } else {
9262: $homeserver = &domain($cdom,'primary');
9263: }
9264: if ($homeserver ne 'no_host') {
9265: $response = &reply('autorun:'.$cdom,$homeserver);
9266: }
9267: }
9268: return $response;
9269: }
9270:
9271: sub auto_get_sections {
9272: my ($cnum,$cdom,$inst_coursecode) = @_;
9273: my $homeserver;
9274: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9275: $homeserver = &homeserver($cnum,$cdom);
9276: }
9277: if (!defined($homeserver)) {
9278: if ($cdom =~ /^$match_domain$/) {
9279: $homeserver = &domain($cdom,'primary');
9280: }
9281: }
9282: my @secs;
9283: if (defined($homeserver)) {
9284: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
9285: unless ($response eq 'refused') {
9286: @secs = split(/:/,$response);
9287: }
9288: }
9289: return @secs;
9290: }
9291:
9292: sub auto_new_course {
9293: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
9294: my $homeserver = &homeserver($cnum,$cdom);
9295: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
9296: return $response;
9297: }
9298:
9299: sub auto_validate_courseID {
9300: my ($cnum,$cdom,$inst_course_id) = @_;
9301: my $homeserver = &homeserver($cnum,$cdom);
9302: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
9303: return $response;
9304: }
9305:
9306: sub auto_validate_instcode {
9307: my ($cnum,$cdom,$instcode,$owner) = @_;
9308: my ($homeserver,$response);
9309: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9310: $homeserver = &homeserver($cnum,$cdom);
9311: }
9312: if (!defined($homeserver)) {
9313: if ($cdom =~ /^$match_domain$/) {
9314: $homeserver = &domain($cdom,'primary');
9315: }
9316: }
9317: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
9318: &escape($instcode).':'.&escape($owner),$homeserver));
9319: my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
9320: return ($outcome,$description,$defaultcredits);
9321: }
9322:
9323: sub auto_create_password {
9324: my ($cnum,$cdom,$authparam,$udom) = @_;
9325: my ($homeserver,$response);
9326: my $create_passwd = 0;
9327: my $authchk = '';
9328: if ($udom =~ /^$match_domain$/) {
9329: $homeserver = &domain($udom,'primary');
9330: }
9331: if ($homeserver eq '') {
9332: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
9333: $homeserver = &homeserver($cnum,$cdom);
9334: }
9335: }
9336: if ($homeserver eq '') {
9337: $authchk = 'nodomain';
9338: } else {
9339: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
9340: if ($response eq 'refused') {
9341: $authchk = 'refused';
9342: } else {
9343: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
9344: }
9345: }
9346: return ($authparam,$create_passwd,$authchk);
9347: }
9348:
9349: sub auto_photo_permission {
9350: my ($cnum,$cdom,$students) = @_;
9351: my $homeserver = &homeserver($cnum,$cdom);
9352: my ($outcome,$perm_reqd,$conditions) =
9353: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
9354: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
9355: return (undef,undef);
9356: }
9357: return ($outcome,$perm_reqd,$conditions);
9358: }
9359:
9360: sub auto_checkphotos {
9361: my ($uname,$udom,$pid) = @_;
9362: my $homeserver = &homeserver($uname,$udom);
9363: my ($result,$resulttype);
9364: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
9365: &escape($uname).':'.&escape($pid),
9366: $homeserver));
9367: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
9368: return (undef,undef);
9369: }
9370: if ($outcome) {
9371: ($result,$resulttype) = split(/:/,$outcome);
9372: }
9373: return ($result,$resulttype);
9374: }
9375:
9376: sub auto_photochoice {
9377: my ($cnum,$cdom) = @_;
9378: my $homeserver = &homeserver($cnum,$cdom);
9379: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
9380: &escape($cdom),
9381: $homeserver)));
9382: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
9383: return (undef,undef);
9384: }
9385: return ($update,$comment);
9386: }
9387:
9388: sub auto_photoupdate {
9389: my ($affiliatesref,$dom,$cnum,$photo) = @_;
9390: my $homeserver = &homeserver($cnum,$dom);
9391: my $host=&hostname($homeserver);
9392: my $cmd = '';
9393: my $maxtries = 1;
9394: foreach my $affiliate (keys(%{$affiliatesref})) {
9395: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
9396: }
9397: $cmd =~ s/%%$//;
9398: $cmd = &escape($cmd);
9399: my $query = 'institutionalphotos';
9400: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
9401: unless ($queryid=~/^\Q$host\E\_/) {
9402: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
9403: return 'error: '.$queryid;
9404: }
9405: my $reply = &get_query_reply($queryid);
9406: my $tries = 1;
9407: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
9408: $reply = &get_query_reply($queryid);
9409: $tries ++;
9410: }
9411: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
9412: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
9413: } else {
9414: my @responses = split(/:/,$reply);
9415: my $outcome = shift(@responses);
9416: foreach my $item (@responses) {
9417: my ($key,$value) = split(/=/,$item);
9418: $$photo{$key} = $value;
9419: }
9420: return $outcome;
9421: }
9422: return 'error';
9423: }
9424:
9425: sub auto_instcode_format {
9426: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
9427: $cat_order) = @_;
9428: my $courses = '';
9429: my @homeservers;
9430: if ($caller eq 'global') {
9431: my %servers = &get_servers($codedom,'library');
9432: foreach my $tryserver (keys(%servers)) {
9433: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
9434: push(@homeservers,$tryserver);
9435: }
9436: }
9437: } elsif ($caller eq 'requests') {
9438: if ($codedom =~ /^$match_domain$/) {
9439: my $chome = &domain($codedom,'primary');
9440: unless ($chome eq 'no_host') {
9441: push(@homeservers,$chome);
9442: }
9443: }
9444: } else {
9445: push(@homeservers,&homeserver($caller,$codedom));
9446: }
9447: foreach my $code (keys(%{$instcodes})) {
9448: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
9449: }
9450: chop($courses);
9451: my $ok_response = 0;
9452: my $response;
9453: while (@homeservers > 0 && $ok_response == 0) {
9454: my $server = shift(@homeservers);
9455: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
9456: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
9457: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
9458: split(/:/,$response);
9459: %{$codes} = (%{$codes},&str2hash($codes_str));
9460: push(@{$codetitles},&str2array($codetitles_str));
9461: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
9462: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
9463: $ok_response = 1;
9464: }
9465: }
9466: if ($ok_response) {
9467: return 'ok';
9468: } else {
9469: return $response;
9470: }
9471: }
9472:
9473: sub auto_instcode_defaults {
9474: my ($domain,$returnhash,$code_order) = @_;
9475: my @homeservers;
9476:
9477: my %servers = &get_servers($domain,'library');
9478: foreach my $tryserver (keys(%servers)) {
9479: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
9480: push(@homeservers,$tryserver);
9481: }
9482: }
9483:
9484: my $response;
9485: foreach my $server (@homeservers) {
9486: $response=&reply('autoinstcodedefaults:'.$domain,$server);
9487: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
9488:
9489: foreach my $pair (split(/\&/,$response)) {
9490: my ($name,$value)=split(/\=/,$pair);
9491: if ($name eq 'code_order') {
9492: @{$code_order} = split(/\&/,&unescape($value));
9493: } else {
9494: $returnhash->{&unescape($name)}=&unescape($value);
9495: }
9496: }
9497: return 'ok';
9498: }
9499:
9500: return $response;
9501: }
9502:
9503: sub auto_possible_instcodes {
9504: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
9505: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
9506: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
9507: return;
9508: }
9509: my (@homeservers,$uhome);
9510: if (defined(&domain($domain,'primary'))) {
9511: $uhome=&domain($domain,'primary');
9512: push(@homeservers,&domain($domain,'primary'));
9513: } else {
9514: my %servers = &get_servers($domain,'library');
9515: foreach my $tryserver (keys(%servers)) {
9516: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
9517: push(@homeservers,$tryserver);
9518: }
9519: }
9520: }
9521: my $response;
9522: foreach my $server (@homeservers) {
9523: $response=&reply('autopossibleinstcodes:'.$domain,$server);
9524: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
9525: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
9526: split(':',$response);
9527: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
9528: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
9529: foreach my $item (split('&',$cat_title)) {
9530: my ($name,$value)=split('=',$item);
9531: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
9532: }
9533: foreach my $item (split('&',$cat_order)) {
9534: my ($name,$value)=split('=',$item);
9535: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
9536: }
9537: return 'ok';
9538: }
9539: return $response;
9540: }
9541:
9542: sub auto_courserequest_checks {
9543: my ($dom) = @_;
9544: my ($homeserver,%validations);
9545: if ($dom =~ /^$match_domain$/) {
9546: $homeserver = &domain($dom,'primary');
9547: }
9548: unless ($homeserver eq 'no_host') {
9549: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
9550: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9551: my @items = split(/&/,$response);
9552: foreach my $item (@items) {
9553: my ($key,$value) = split('=',$item);
9554: $validations{&unescape($key)} = &thaw_unescape($value);
9555: }
9556: }
9557: }
9558: return %validations;
9559: }
9560:
9561: sub auto_courserequest_validation {
9562: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$custominfo) = @_;
9563: my ($homeserver,$response);
9564: if ($dom =~ /^$match_domain$/) {
9565: $homeserver = &domain($dom,'primary');
9566: }
9567: unless ($homeserver eq 'no_host') {
9568: my $customdata;
9569: if (ref($custominfo) eq 'HASH') {
9570: $customdata = &freeze_escape($custominfo);
9571: }
9572: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
9573: ':'.&escape($crstype).':'.&escape($inststatuslist).
9574: ':'.&escape($instcode).':'.&escape($instseclist).':'.
9575: $customdata,$homeserver));
9576: }
9577: return $response;
9578: }
9579:
9580: sub auto_validate_class_sec {
9581: my ($cdom,$cnum,$owners,$inst_class) = @_;
9582: my $homeserver = &homeserver($cnum,$cdom);
9583: my $ownerlist;
9584: if (ref($owners) eq 'ARRAY') {
9585: $ownerlist = join(',',@{$owners});
9586: } else {
9587: $ownerlist = $owners;
9588: }
9589: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
9590: &escape($ownerlist).':'.$cdom,$homeserver);
9591: return $response;
9592: }
9593:
9594: sub auto_validate_instclasses {
9595: my ($cdom,$cnum,$owners,$classesref) = @_;
9596: my ($homeserver,%validations);
9597: $homeserver = &homeserver($cnum,$cdom);
9598: unless ($homeserver eq 'no_host') {
9599: my $ownerlist;
9600: if (ref($owners) eq 'ARRAY') {
9601: $ownerlist = join(',',@{$owners});
9602: } else {
9603: $ownerlist = $owners;
9604: }
9605: if (ref($classesref) eq 'HASH') {
9606: my $classes = &freeze_escape($classesref);
9607: my $response=&reply('autovalidateinstclasses:'.&escape($ownerlist).
9608: ':'.$cdom.':'.$classes,$homeserver);
9609: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9610: my @items = split(/&/,$response);
9611: foreach my $item (@items) {
9612: my ($key,$value) = split('=',$item);
9613: $validations{&unescape($key)} = &thaw_unescape($value);
9614: }
9615: }
9616: }
9617: }
9618: return %validations;
9619: }
9620:
9621: sub auto_crsreq_update {
9622: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,
9623: $code,$accessstart,$accessend,$inbound) = @_;
9624: my ($homeserver,%crsreqresponse);
9625: if ($cdom =~ /^$match_domain$/) {
9626: $homeserver = &domain($cdom,'primary');
9627: }
9628: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
9629: my $info;
9630: if (ref($inbound) eq 'HASH') {
9631: $info = &freeze_escape($inbound);
9632: }
9633: my $response=&reply('autocrsrequpdate:'.$cdom.':'.$cnum.':'.&escape($crstype).
9634: ':'.&escape($action).':'.&escape($ownername).':'.
9635: &escape($ownerdomain).':'.&escape($fullname).':'.
9636: &escape($title).':'.&escape($code).':'.
9637: &escape($accessstart).':'.&escape($accessend).':'.$info,
9638: $homeserver);
9639: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
9640: my @items = split(/&/,$response);
9641: foreach my $item (@items) {
9642: my ($key,$value) = split('=',$item);
9643: $crsreqresponse{&unescape($key)} = &thaw_unescape($value);
9644: }
9645: }
9646: }
9647: return \%crsreqresponse;
9648: }
9649:
9650: sub auto_export_grades {
9651: my ($cdom,$cnum,$inforef,$gradesref) = @_;
9652: my ($homeserver,%exportresponse);
9653: if ($cdom =~ /^$match_domain$/) {
9654: $homeserver = &domain($cdom,'primary');
9655: }
9656: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
9657: my $info;
9658: if (ref($inforef) eq 'HASH') {
9659: $info = &freeze_escape($inforef);
9660: }
9661: if (ref($gradesref) eq 'HASH') {
9662: my $grades = &freeze_escape($gradesref);
9663: my $response=&reply('encrypt:autoexportgrades:'.$cdom.':'.$cnum.':'.
9664: $info.':'.$grades,$homeserver);
9665: unless ($response =~ /(con_lost|error|no_such_host|refused|unknown_command)/) {
9666: my @items = split(/&/,$response);
9667: foreach my $item (@items) {
9668: my ($key,$value) = split('=',$item);
9669: $exportresponse{&unescape($key)} = &thaw_unescape($value);
9670: }
9671: }
9672: }
9673: }
9674: return \%exportresponse;
9675: }
9676:
9677: sub check_instcode_cloning {
9678: my ($codedefaults,$code_order,$cloner,$clonefromcode,$clonetocode) = @_;
9679: unless ((ref($codedefaults) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
9680: return;
9681: }
9682: my $canclone;
9683: if (@{$code_order} > 0) {
9684: my $instcoderegexp ='^';
9685: my @clonecodes = split(/\&/,$cloner);
9686: foreach my $item (@{$code_order}) {
9687: if (grep(/^\Q$item\E=/,@clonecodes)) {
9688: foreach my $pair (@clonecodes) {
9689: my ($key,$val) = split(/\=/,$pair,2);
9690: $val = &unescape($val);
9691: if ($key eq $item) {
9692: $instcoderegexp .= '('.$val.')';
9693: last;
9694: }
9695: }
9696: } else {
9697: $instcoderegexp .= $codedefaults->{$item};
9698: }
9699: }
9700: $instcoderegexp .= '$';
9701: my (@from,@to);
9702: eval {
9703: (@from) = ($clonefromcode =~ /$instcoderegexp/);
9704: (@to) = ($clonetocode =~ /$instcoderegexp/);
9705: };
9706: if ((@from > 0) && (@to > 0)) {
9707: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
9708: if (!@diffs) {
9709: $canclone = 1;
9710: }
9711: }
9712: }
9713: return $canclone;
9714: }
9715:
9716: sub default_instcode_cloning {
9717: my ($clonedom,$domdefclone,$clonefromcode,$clonetocode,$codedefaultsref,$codeorderref) = @_;
9718: my (%codedefaults,@code_order,$canclone);
9719: if ((ref($codedefaultsref) eq 'HASH') && (ref($codeorderref) eq 'ARRAY')) {
9720: %codedefaults = %{$codedefaultsref};
9721: @code_order = @{$codeorderref};
9722: } elsif ($clonedom) {
9723: &auto_instcode_defaults($clonedom,\%codedefaults,\@code_order);
9724: }
9725: if (($domdefclone) && (@code_order)) {
9726: my @clonecodes = split(/\+/,$domdefclone);
9727: my $instcoderegexp ='^';
9728: foreach my $item (@code_order) {
9729: if (grep(/^\Q$item\E$/,@clonecodes)) {
9730: $instcoderegexp .= '('.$codedefaults{$item}.')';
9731: } else {
9732: $instcoderegexp .= $codedefaults{$item};
9733: }
9734: }
9735: $instcoderegexp .= '$';
9736: my (@from,@to);
9737: eval {
9738: (@from) = ($clonefromcode =~ /$instcoderegexp/);
9739: (@to) = ($clonetocode =~ /$instcoderegexp/);
9740: };
9741: if ((@from > 0) && (@to > 0)) {
9742: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
9743: if (!@diffs) {
9744: $canclone = 1;
9745: }
9746: }
9747: }
9748: return $canclone;
9749: }
9750:
9751: # ------------------------------------------------------- Course Group routines
9752:
9753: sub get_coursegroups {
9754: my ($cdom,$cnum,$group,$namespace) = @_;
9755: return(&dump($namespace,$cdom,$cnum,$group));
9756: }
9757:
9758: sub modify_coursegroup {
9759: my ($cdom,$cnum,$groupsettings) = @_;
9760: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
9761: }
9762:
9763: sub toggle_coursegroup_status {
9764: my ($cdom,$cnum,$group,$action) = @_;
9765: my ($from_namespace,$to_namespace);
9766: if ($action eq 'delete') {
9767: $from_namespace = 'coursegroups';
9768: $to_namespace = 'deleted_groups';
9769: } else {
9770: $from_namespace = 'deleted_groups';
9771: $to_namespace = 'coursegroups';
9772: }
9773: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
9774: if (my $tmp = &error(%curr_group)) {
9775: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
9776: return ('read error',$tmp);
9777: } else {
9778: my %savedsettings = %curr_group;
9779: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
9780: my $deloutcome;
9781: if ($result eq 'ok') {
9782: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
9783: } else {
9784: return ('write error',$result);
9785: }
9786: if ($deloutcome eq 'ok') {
9787: return 'ok';
9788: } else {
9789: return ('delete error',$deloutcome);
9790: }
9791: }
9792: }
9793:
9794: sub modify_group_roles {
9795: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
9796: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
9797: my $role = 'gr/'.&escape($userprivs);
9798: my ($uname,$udom) = split(/:/,$user);
9799: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
9800: if ($result eq 'ok') {
9801: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
9802: }
9803: return $result;
9804: }
9805:
9806: sub modify_coursegroup_membership {
9807: my ($cdom,$cnum,$membership) = @_;
9808: my $result = &put('groupmembership',$membership,$cdom,$cnum);
9809: return $result;
9810: }
9811:
9812: sub get_active_groups {
9813: my ($udom,$uname,$cdom,$cnum) = @_;
9814: my $now = time;
9815: my %groups = ();
9816: foreach my $key (keys(%env)) {
9817: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
9818: my ($start,$end) = split(/\./,$env{$key});
9819: if (($end!=0) && ($end<$now)) { next; }
9820: if (($start!=0) && ($start>$now)) { next; }
9821: if ($1 eq $cdom && $2 eq $cnum) {
9822: $groups{$3} = $env{$key} ;
9823: }
9824: }
9825: }
9826: return %groups;
9827: }
9828:
9829: sub get_group_membership {
9830: my ($cdom,$cnum,$group) = @_;
9831: return(&dump('groupmembership',$cdom,$cnum,$group));
9832: }
9833:
9834: sub get_users_groups {
9835: my ($udom,$uname,$courseid) = @_;
9836: my @usersgroups;
9837: my $cachetime=1800;
9838:
9839: my $hashid="$udom:$uname:$courseid";
9840: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
9841: if (defined($cached)) {
9842: @usersgroups = split(/:/,$grouplist);
9843: } else {
9844: $grouplist = '';
9845: my $courseurl = &courseid_to_courseurl($courseid);
9846: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
9847: my $access_end = $env{'course.'.$courseid.
9848: '.default_enrollment_end_date'};
9849: my $now = time;
9850: foreach my $key (keys(%roleshash)) {
9851: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
9852: my $group = $1;
9853: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
9854: my $start = $2;
9855: my $end = $1;
9856: if ($start == -1) { next; } # deleted from group
9857: if (($start!=0) && ($start>$now)) { next; }
9858: if (($end!=0) && ($end<$now)) {
9859: if ($access_end && $access_end < $now) {
9860: if ($access_end - $end < 86400) {
9861: push(@usersgroups,$group);
9862: }
9863: }
9864: next;
9865: }
9866: push(@usersgroups,$group);
9867: }
9868: }
9869: }
9870: @usersgroups = &sort_course_groups($courseid,@usersgroups);
9871: $grouplist = join(':',@usersgroups);
9872: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
9873: }
9874: return @usersgroups;
9875: }
9876:
9877: sub devalidate_getgroups_cache {
9878: my ($udom,$uname,$cdom,$cnum)=@_;
9879: my $courseid = $cdom.'_'.$cnum;
9880:
9881: my $hashid="$udom:$uname:$courseid";
9882: &devalidate_cache_new('getgroups',$hashid);
9883: }
9884:
9885: # ------------------------------------------------------------------ Plain Text
9886:
9887: sub plaintext {
9888: my ($short,$type,$cid,$forcedefault) = @_;
9889: if ($short =~ m{^cr/}) {
9890: return (split('/',$short))[-1];
9891: }
9892: if (!defined($cid)) {
9893: $cid = $env{'request.course.id'};
9894: }
9895: my %rolenames = (
9896: Course => 'std',
9897: Community => 'alt1',
9898: Placement => 'std',
9899: );
9900: if ($cid ne '') {
9901: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
9902: unless ($forcedefault) {
9903: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
9904: &Apache::lonlocal::mt_escape(\$roletext);
9905: return &Apache::lonlocal::mt($roletext);
9906: }
9907: }
9908: }
9909: if ((defined($type)) && (defined($rolenames{$type})) &&
9910: (defined($rolenames{$type})) &&
9911: (defined($prp{$short}{$rolenames{$type}}))) {
9912: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
9913: } elsif ($cid ne '') {
9914: my $crstype = $env{'course.'.$cid.'.type'};
9915: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
9916: (defined($prp{$short}{$rolenames{$crstype}}))) {
9917: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
9918: }
9919: }
9920: return &Apache::lonlocal::mt($prp{$short}{'std'});
9921: }
9922:
9923: # ----------------------------------------------------------------- Assign Role
9924:
9925: sub assignrole {
9926: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
9927: $context)=@_;
9928: my $mrole;
9929: if ($role =~ /^cr\//) {
9930: my $cwosec=$url;
9931: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
9932: unless (&allowed('ccr',$cwosec)) {
9933: my $refused = 1;
9934: if ($context eq 'requestcourses') {
9935: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
9936: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
9937: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
9938: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
9939: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9940: if ($crsenv{'internal.courseowner'} eq
9941: $env{'user.name'}.':'.$env{'user.domain'}) {
9942: $refused = '';
9943: }
9944: }
9945: }
9946: }
9947: }
9948: if ($refused) {
9949: &logthis('Refused custom assignrole: '.
9950: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
9951: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
9952: return 'refused';
9953: }
9954: }
9955: $mrole='cr';
9956: } elsif ($role =~ /^gr\//) {
9957: my $cwogrp=$url;
9958: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
9959: unless (&allowed('mdg',$cwogrp)) {
9960: &logthis('Refused group assignrole: '.
9961: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
9962: $env{'user.name'}.' at '.$env{'user.domain'});
9963: return 'refused';
9964: }
9965: $mrole='gr';
9966: } else {
9967: my $cwosec=$url;
9968: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
9969: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
9970: my $refused;
9971: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
9972: if (!(&allowed('c'.$role,$url))) {
9973: $refused = 1;
9974: }
9975: } else {
9976: $refused = 1;
9977: }
9978: if ($refused) {
9979: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
9980: if (!$selfenroll && (($context eq 'course') || ($context eq 'ltienroll' && $env{'request.lti.login'}))) {
9981: my %crsenv;
9982: if ($role eq 'cc' || $role eq 'co') {
9983: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
9984: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
9985: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
9986: if ($crsenv{'internal.courseowner'} eq
9987: $env{'user.name'}.':'.$env{'user.domain'}) {
9988: $refused = '';
9989: }
9990: }
9991: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
9992: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
9993: if ($crsenv{'internal.courseowner'} eq
9994: $env{'user.name'}.':'.$env{'user.domain'}) {
9995: $refused = '';
9996: }
9997: }
9998: }
9999: }
10000: } elsif (($selfenroll == 1) && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
10001: if ($role eq 'st') {
10002: $refused = '';
10003: } elsif (($context eq 'ltienroll') && ($env{'request.lti.login'})) {
10004: $refused = '';
10005: }
10006: } elsif ($context eq 'requestcourses') {
10007: my @possroles = ('st','ta','ep','in','cc','co');
10008: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
10009: my $wrongcc;
10010: if ($cnum =~ /^$match_community$/) {
10011: $wrongcc = 1 if ($role eq 'cc');
10012: } else {
10013: $wrongcc = 1 if ($role eq 'co');
10014: }
10015: unless ($wrongcc) {
10016: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
10017: if ($crsenv{'internal.courseowner'} eq
10018: $env{'user.name'}.':'.$env{'user.domain'}) {
10019: $refused = '';
10020: }
10021: }
10022: }
10023: } elsif ($context eq 'requestauthor') {
10024: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
10025: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
10026: if ($env{'environment.requestauthor'} eq 'automatic') {
10027: $refused = '';
10028: } else {
10029: my %domdefaults = &get_domain_defaults($udom);
10030: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
10031: my $checkbystatus;
10032: if ($env{'user.adv'}) {
10033: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
10034: if ($disposition eq 'automatic') {
10035: $refused = '';
10036: } elsif ($disposition eq '') {
10037: $checkbystatus = 1;
10038: }
10039: } else {
10040: $checkbystatus = 1;
10041: }
10042: if ($checkbystatus) {
10043: if ($env{'environment.inststatus'}) {
10044: my @inststatuses = split(/,/,$env{'environment.inststatus'});
10045: foreach my $type (@inststatuses) {
10046: if (($type ne '') &&
10047: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
10048: $refused = '';
10049: }
10050: }
10051: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
10052: $refused = '';
10053: }
10054: }
10055: }
10056: }
10057: }
10058: }
10059: if ($refused) {
10060: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
10061: ' '.$role.' '.$end.' '.$start.' by '.
10062: $env{'user.name'}.' at '.$env{'user.domain'});
10063: return 'refused';
10064: }
10065: }
10066: } elsif ($role eq 'au') {
10067: if ($url ne '/'.$udom.'/') {
10068: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
10069: ' to assign author role for '.$uname.':'.$udom.
10070: ' in domain: '.$url.' refused (wrong domain).');
10071: return 'refused';
10072: }
10073: }
10074: $mrole=$role;
10075: }
10076: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
10077: "$udom:$uname:$url".'_'."$mrole=$role";
10078: if ($end) { $command.='_'.$end; }
10079: if ($start) {
10080: if ($end) {
10081: $command.='_'.$start;
10082: } else {
10083: $command.='_0_'.$start;
10084: }
10085: }
10086: my $origstart = $start;
10087: my $origend = $end;
10088: my $delflag;
10089: # actually delete
10090: if ($deleteflag) {
10091: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
10092: # modify command to delete the role
10093: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
10094: "$udom:$uname:$url".'_'."$mrole";
10095: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
10096: # set start and finish to negative values for userrolelog
10097: $start=-1;
10098: $end=-1;
10099: $delflag = 1;
10100: }
10101: }
10102: # send command
10103: my $answer=&reply($command,&homeserver($uname,$udom));
10104: # log new user role if status is ok
10105: if ($answer eq 'ok') {
10106: &userrolelog($role,$uname,$udom,$url,$start,$end);
10107: if (($role eq 'cc') || ($role eq 'in') ||
10108: ($role eq 'ep') || ($role eq 'ad') ||
10109: ($role eq 'ta') || ($role eq 'st') ||
10110: ($role=~/^cr/) || ($role eq 'gr') ||
10111: ($role eq 'co')) {
10112: # for course roles, perform group memberships changes triggered by role change.
10113: unless ($role =~ /^gr/) {
10114: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
10115: $origstart,$selfenroll,$context);
10116: }
10117: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
10118: $selfenroll,$context);
10119: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
10120: ($role eq 'au') || ($role eq 'dc') || ($role eq 'dh') ||
10121: ($role eq 'da')) {
10122: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
10123: $context);
10124: } elsif (($role eq 'ca') || ($role eq 'aa')) {
10125: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
10126: $context);
10127: }
10128: if ($role eq 'cc') {
10129: &autoupdate_coowners($url,$end,$start,$uname,$udom);
10130: }
10131: }
10132: return $answer;
10133: }
10134:
10135: sub autoupdate_coowners {
10136: my ($url,$end,$start,$uname,$udom) = @_;
10137: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
10138: if (($cdom ne '') && ($cnum ne '')) {
10139: my $now = time;
10140: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
10141: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
10142: my %coursehash = &coursedescription($cdom.'_'.$cnum);
10143: my $instcode = $coursehash{'internal.coursecode'};
10144: if ($instcode ne '') {
10145: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
10146: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
10147: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
10148: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
10149: if ($result eq 'valid') {
10150: if ($coursehash{'internal.co-owners'}) {
10151: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
10152: push(@newcoowners,$coowner);
10153: }
10154: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
10155: push(@newcoowners,$uname.':'.$udom);
10156: }
10157: @newcoowners = sort(@newcoowners);
10158: } else {
10159: push(@newcoowners,$uname.':'.$udom);
10160: }
10161: } else {
10162: if ($coursehash{'internal.co-owners'}) {
10163: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
10164: unless ($coowner eq $uname.':'.$udom) {
10165: push(@newcoowners,$coowner);
10166: }
10167: }
10168: unless (@newcoowners > 0) {
10169: $delcoowners = 1;
10170: $coowners = '';
10171: }
10172: }
10173: }
10174: if (@newcoowners || $delcoowners) {
10175: &store_coowners($cdom,$cnum,$coursehash{'home'},
10176: $delcoowners,@newcoowners);
10177: }
10178: }
10179: }
10180: }
10181: }
10182: }
10183: }
10184:
10185: sub store_coowners {
10186: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
10187: my $cid = $cdom.'_'.$cnum;
10188: my ($coowners,$delresult,$putresult);
10189: if (@newcoowners) {
10190: $coowners = join(',',@newcoowners);
10191: my %coownershash = (
10192: 'internal.co-owners' => $coowners,
10193: );
10194: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
10195: if ($putresult eq 'ok') {
10196: if ($env{'course.'.$cid.'.num'} eq $cnum) {
10197: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
10198: }
10199: }
10200: }
10201: if ($delcoowners) {
10202: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
10203: if ($delresult eq 'ok') {
10204: if ($env{'course.'.$cid.'.internal.co-owners'}) {
10205: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
10206: }
10207: }
10208: }
10209: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
10210: my %crsinfo =
10211: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
10212: if (ref($crsinfo{$cid}) eq 'HASH') {
10213: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
10214: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
10215: }
10216: }
10217: }
10218:
10219: # -------------------------------------------------- Modify user authentication
10220: # Overrides without validation
10221:
10222: sub modifyuserauth {
10223: my ($udom,$uname,$umode,$upass)=@_;
10224: my $uhome=&homeserver($uname,$udom);
10225: my $allowed;
10226: if (&allowed('mau',$udom)) {
10227: $allowed = 1;
10228: } elsif (($umode eq 'internal') && ($udom eq $env{'user.domain'}) &&
10229: ($env{'request.course.id'}) && (&allowed('mip',$env{'request.course.id'})) &&
10230: (!$env{'course.'.$env{'request.course.id'}.'.internal.nopasswdchg'})) {
10231: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
10232: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
10233: if (($cdom ne '') && ($cnum ne '')) {
10234: my $is_owner = &is_course_owner($cdom,$cnum);
10235: if ($is_owner) {
10236: $allowed = 1;
10237: }
10238: }
10239: }
10240: unless ($allowed) { return 'refused'; }
10241: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
10242: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
10243: ' in domain '.$env{'request.role.domain'});
10244: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
10245: &escape($upass),$uhome);
10246: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
10247: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
10248: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
10249: &log($udom,,$uname,$uhome,
10250: 'Authentication changed by '.$env{'user.domain'}.', '.
10251: $env{'user.name'}.', '.$umode.
10252: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
10253: unless ($reply eq 'ok') {
10254: &logthis('Authentication mode error: '.$reply);
10255: return 'error: '.$reply;
10256: }
10257: return 'ok';
10258: }
10259:
10260: # --------------------------------------------------------------- Modify a user
10261:
10262: sub modifyuser {
10263: my ($udom, $uname, $uid,
10264: $umode, $upass, $first,
10265: $middle, $last, $gene,
10266: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
10267: $udom= &LONCAPA::clean_domain($udom);
10268: $uname=&LONCAPA::clean_username($uname);
10269: my $showcandelete = 'none';
10270: if (ref($candelete) eq 'ARRAY') {
10271: if (@{$candelete} > 0) {
10272: $showcandelete = join(', ',@{$candelete});
10273: }
10274: }
10275: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
10276: $umode.', '.$first.', '.$middle.', '.
10277: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
10278: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
10279: ' desiredhome not specified').
10280: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
10281: ' in domain '.$env{'request.role.domain'});
10282: my $uhome=&homeserver($uname,$udom,'true');
10283: my $newuser;
10284: if ($uhome eq 'no_host') {
10285: $newuser = 1;
10286: unless (($umode && ($upass ne '')) || ($umode eq 'localauth') ||
10287: ($umode eq 'lti')) {
10288: return 'error: more information needed to create new user';
10289: }
10290: }
10291: # ----------------------------------------------------------------- Create User
10292: if (($uhome eq 'no_host') &&
10293: (($umode && $upass) || ($umode eq 'localauth') || ($umode eq 'lti'))) {
10294: my $unhome='';
10295: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
10296: $unhome = $desiredhome;
10297: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
10298: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
10299: } else { # load balancing routine for determining $unhome
10300: my $loadm=10000000;
10301: my %servers = &get_servers($udom,'library');
10302: foreach my $tryserver (keys(%servers)) {
10303: my $answer=reply('load',$tryserver);
10304: if (($answer=~/\d+/) && ($answer<$loadm)) {
10305: $loadm=$answer;
10306: $unhome=$tryserver;
10307: }
10308: }
10309: }
10310: if (($unhome eq '') || ($unhome eq 'no_host')) {
10311: return 'error: unable to find a home server for '.$uname.
10312: ' in domain '.$udom;
10313: }
10314: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
10315: &escape($upass),$unhome);
10316: unless ($reply eq 'ok') {
10317: return 'error: '.$reply;
10318: }
10319: $uhome=&homeserver($uname,$udom,'true');
10320: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
10321: return 'error: unable verify users home machine.';
10322: }
10323: } # End of creation of new user
10324: # ---------------------------------------------------------------------- Add ID
10325: if ($uid) {
10326: $uid=~tr/A-Z/a-z/;
10327: my %uidhash=&idrget($udom,$uname);
10328: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
10329: && (!$forceid)) {
10330: unless ($uid eq $uidhash{$uname}) {
10331: return 'error: user id "'.$uid.'" does not match '.
10332: 'current user id "'.$uidhash{$uname}.'".';
10333: }
10334: } else {
10335: &idput($udom,{$uname => $uid},$uhome,'ids');
10336: }
10337: }
10338: # -------------------------------------------------------------- Add names, etc
10339: my @tmp=&get('environment',
10340: ['firstname','middlename','lastname','generation','id',
10341: 'permanentemail','inststatus'],
10342: $udom,$uname);
10343: my (%names,%oldnames);
10344: if ($tmp[0] =~ m/^error:.*/) {
10345: %names=();
10346: } else {
10347: %names = @tmp;
10348: %oldnames = %names;
10349: }
10350: #
10351: # If name, email and/or uid are blank (e.g., because an uploaded file
10352: # of users did not contain them), do not overwrite existing values
10353: # unless field is in $candelete array ref.
10354: #
10355:
10356: my @fields = ('firstname','middlename','lastname','generation',
10357: 'permanentemail','id');
10358: my %newvalues;
10359: if (ref($candelete) eq 'ARRAY') {
10360: foreach my $field (@fields) {
10361: if (grep(/^\Q$field\E$/,@{$candelete})) {
10362: if ($field eq 'firstname') {
10363: $names{$field} = $first;
10364: } elsif ($field eq 'middlename') {
10365: $names{$field} = $middle;
10366: } elsif ($field eq 'lastname') {
10367: $names{$field} = $last;
10368: } elsif ($field eq 'generation') {
10369: $names{$field} = $gene;
10370: } elsif ($field eq 'permanentemail') {
10371: $names{$field} = $email;
10372: } elsif ($field eq 'id') {
10373: $names{$field} = $uid;
10374: }
10375: }
10376: }
10377: }
10378: if ($first) { $names{'firstname'} = $first; }
10379: if (defined($middle)) { $names{'middlename'} = $middle; }
10380: if ($last) { $names{'lastname'} = $last; }
10381: if (defined($gene)) { $names{'generation'} = $gene; }
10382: if ($email) {
10383: $email=~s/[^\w\@\.\-\,]//gs;
10384: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
10385: }
10386: if ($uid) { $names{'id'} = $uid; }
10387: if (defined($inststatus)) {
10388: $names{'inststatus'} = '';
10389: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
10390: if (ref($usertypes) eq 'HASH') {
10391: my @okstatuses;
10392: foreach my $item (split(/:/,$inststatus)) {
10393: if (defined($usertypes->{$item})) {
10394: push(@okstatuses,$item);
10395: }
10396: }
10397: if (@okstatuses) {
10398: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
10399: }
10400: }
10401: }
10402: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
10403: $umode.', '.$first.', '.$middle.', '.
10404: $last.', '.$gene.', '.$email.', '.$inststatus;
10405: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
10406: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
10407: } else {
10408: $logmsg .= ' during self creation';
10409: }
10410: my $changed;
10411: if ($newuser) {
10412: $changed = 1;
10413: } else {
10414: foreach my $field (@fields) {
10415: if ($names{$field} ne $oldnames{$field}) {
10416: $changed = 1;
10417: last;
10418: }
10419: }
10420: }
10421: unless ($changed) {
10422: $logmsg = 'No changes in user information needed for: '.$logmsg;
10423: &logthis($logmsg);
10424: return 'ok';
10425: }
10426: my $reply = &put('environment', \%names, $udom,$uname);
10427: if ($reply ne 'ok') {
10428: return 'error: '.$reply;
10429: }
10430: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
10431: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
10432: }
10433: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
10434: &devalidate_cache_new('namescache',$uname.':'.$udom);
10435: $logmsg = 'Success modifying user '.$logmsg;
10436: &logthis($logmsg);
10437: return 'ok';
10438: }
10439:
10440: # -------------------------------------------------------------- Modify student
10441:
10442: sub modifystudent {
10443: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
10444: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
10445: $selfenroll,$context,$inststatus,$credits,$instsec)=@_;
10446: if (!$cid) {
10447: unless ($cid=$env{'request.course.id'}) {
10448: return 'not_in_class';
10449: }
10450: }
10451: # --------------------------------------------------------------- Make the user
10452: my $reply=&modifyuser
10453: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
10454: $desiredhome,$email,$inststatus);
10455: unless ($reply eq 'ok') { return $reply; }
10456: # This will cause &modify_student_enrollment to get the uid from the
10457: # student's environment
10458: $uid = undef if (!$forceid);
10459: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
10460: $gene,$usec,$end,$start,$type,$locktype,
10461: $cid,$selfenroll,$context,$credits,$instsec);
10462: return $reply;
10463: }
10464:
10465: sub modify_student_enrollment {
10466: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
10467: $locktype,$cid,$selfenroll,$context,$credits,$instsec) = @_;
10468: my ($cdom,$cnum,$chome);
10469: if (!$cid) {
10470: unless ($cid=$env{'request.course.id'}) {
10471: return 'not_in_class';
10472: }
10473: $cdom=$env{'course.'.$cid.'.domain'};
10474: $cnum=$env{'course.'.$cid.'.num'};
10475: } else {
10476: ($cdom,$cnum)=split(/_/,$cid);
10477: }
10478: $chome=$env{'course.'.$cid.'.home'};
10479: if (!$chome) {
10480: $chome=&homeserver($cnum,$cdom);
10481: }
10482: if (!$chome) { return 'unknown_course'; }
10483: # Make sure the user exists
10484: my $uhome=&homeserver($uname,$udom);
10485: if (($uhome eq '') || ($uhome eq 'no_host')) {
10486: return 'error: no such user';
10487: }
10488: # Get student data if we were not given enough information
10489: if (!defined($first) || $first eq '' ||
10490: !defined($last) || $last eq '' ||
10491: !defined($uid) || $uid eq '' ||
10492: !defined($middle) || $middle eq '' ||
10493: !defined($gene) || $gene eq '') {
10494: # They did not supply us with enough data to enroll the student, so
10495: # we need to pick up more information.
10496: my %tmp = &get('environment',
10497: ['firstname','middlename','lastname', 'generation','id']
10498: ,$udom,$uname);
10499:
10500: #foreach my $key (keys(%tmp)) {
10501: # &logthis("key $key = ".$tmp{$key});
10502: #}
10503: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
10504: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
10505: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
10506: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
10507: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
10508: }
10509: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
10510: my $user = "$uname:$udom";
10511: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
10512: my $reply=cput('classlist',
10513: {$user =>
10514: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits,$instsec) },
10515: $cdom,$cnum);
10516: if (($reply eq 'ok') || ($reply eq 'delayed')) {
10517: &devalidate_getsection_cache($udom,$uname,$cid);
10518: } else {
10519: return 'error: '.$reply;
10520: }
10521: # Add student role to user
10522: my $uurl='/'.$cid;
10523: $uurl=~s/\_/\//g;
10524: if ($usec) {
10525: $uurl.='/'.$usec;
10526: }
10527: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
10528: $selfenroll,$context);
10529: if ($result ne 'ok') {
10530: if ($old_entry{$user} ne '') {
10531: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
10532: } else {
10533: $reply = &del('classlist',[$user],$cdom,$cnum);
10534: }
10535: }
10536: return $result;
10537: }
10538:
10539: sub format_name {
10540: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
10541: my $name;
10542: if ($first ne 'lastname') {
10543: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
10544: } else {
10545: if ($lastname=~/\S/) {
10546: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
10547: $name=~s/\s+,/,/;
10548: } else {
10549: $name.= $firstname.' '.$middlename.' '.$generation;
10550: }
10551: }
10552: $name=~s/^\s+//;
10553: $name=~s/\s+$//;
10554: $name=~s/\s+/ /g;
10555: return $name;
10556: }
10557:
10558: # ------------------------------------------------- Write to course preferences
10559:
10560: sub writecoursepref {
10561: my ($courseid,%prefs)=@_;
10562: $courseid=~s/^\///;
10563: $courseid=~s/\_/\//g;
10564: my ($cdomain,$cnum)=split(/\//,$courseid);
10565: my $chome=homeserver($cnum,$cdomain);
10566: if (($chome eq '') || ($chome eq 'no_host')) {
10567: return 'error: no such course';
10568: }
10569: my $cstring='';
10570: foreach my $pref (keys(%prefs)) {
10571: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
10572: }
10573: $cstring=~s/\&$//;
10574: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
10575: }
10576:
10577: # ---------------------------------------------------------- Make/modify course
10578:
10579: sub createcourse {
10580: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
10581: $course_owner,$crstype,$cnum,$context,$category)=@_;
10582: $url=&declutter($url);
10583: my $cid='';
10584: if ($context eq 'requestcourses') {
10585: my $can_create = 0;
10586: my ($ownername,$ownerdom) = split(':',$course_owner);
10587: if ($udom eq $ownerdom) {
10588: if (&usertools_access($ownername,$ownerdom,$category,undef,
10589: $context)) {
10590: $can_create = 1;
10591: }
10592: } else {
10593: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
10594: $category);
10595: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
10596: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
10597: if (@curr > 0) {
10598: my @options = qw(approval validate autolimit);
10599: my $optregex = join('|',@options);
10600: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
10601: $can_create = 1;
10602: }
10603: }
10604: }
10605: }
10606: if ($can_create) {
10607: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
10608: unless (&allowed('ccc',$udom)) {
10609: return 'refused';
10610: }
10611: }
10612: } else {
10613: return 'refused';
10614: }
10615: } elsif (!&allowed('ccc',$udom)) {
10616: return 'refused';
10617: }
10618: # --------------------------------------------------------------- Get Unique ID
10619: my $uname;
10620: if ($cnum =~ /^$match_courseid$/) {
10621: my $chome=&homeserver($cnum,$udom,'true');
10622: if (($chome eq '') || ($chome eq 'no_host')) {
10623: $uname = $cnum;
10624: } else {
10625: $uname = &generate_coursenum($udom,$crstype);
10626: }
10627: } else {
10628: $uname = &generate_coursenum($udom,$crstype);
10629: }
10630: return $uname if ($uname =~ /^error/);
10631: # -------------------------------------------------- Check supplied server name
10632: if (!defined($course_server)) {
10633: if (defined(&domain($udom,'primary'))) {
10634: $course_server = &domain($udom,'primary');
10635: } else {
10636: $course_server = $env{'user.home'};
10637: }
10638: }
10639: my %host_servers =
10640: &Apache::lonnet::get_servers($udom,'library');
10641: unless ($host_servers{$course_server}) {
10642: return 'error: invalid home server for course: '.$course_server;
10643: }
10644: # ------------------------------------------------------------- Make the course
10645: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
10646: $course_server);
10647: unless ($reply eq 'ok') { return 'error: '.$reply; }
10648: my $uhome=&homeserver($uname,$udom,'true');
10649: if (($uhome eq '') || ($uhome eq 'no_host')) {
10650: return 'error: no such course';
10651: }
10652: # ----------------------------------------------------------------- Course made
10653: # log existence
10654: my $now = time;
10655: my $newcourse = {
10656: $udom.'_'.$uname => {
10657: description => $description,
10658: inst_code => $inst_code,
10659: owner => $course_owner,
10660: type => $crstype,
10661: creator => $env{'user.name'}.':'.
10662: $env{'user.domain'},
10663: created => $now,
10664: context => $context,
10665: },
10666: };
10667: &courseidput($udom,$newcourse,$uhome,'notime');
10668: # set toplevel url
10669: my $topurl=$url;
10670: unless ($nonstandard) {
10671: # ------------------------------------------ For standard courses, make top url
10672: my $mapurl=&clutter($url);
10673: if ($mapurl eq '/res/') { $mapurl=''; }
10674: $env{'form.initmap'}=(<<ENDINITMAP);
10675: <map>
10676: <resource id="1" type="start"></resource>
10677: <resource id="2" src="$mapurl"></resource>
10678: <resource id="3" type="finish"></resource>
10679: <link index="1" from="1" to="2"></link>
10680: <link index="2" from="2" to="3"></link>
10681: </map>
10682: ENDINITMAP
10683: $topurl=&declutter(
10684: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
10685: );
10686: }
10687: # ----------------------------------------------------------- Write preferences
10688: &writecoursepref($udom.'_'.$uname,
10689: ('description' => $description,
10690: 'url' => $topurl,
10691: 'internal.creator' => $env{'user.name'}.':'.
10692: $env{'user.domain'},
10693: 'internal.created' => $now,
10694: 'internal.creationcontext' => $context)
10695: );
10696: return '/'.$udom.'/'.$uname;
10697: }
10698:
10699: # ------------------------------------------------------------------- Create ID
10700: sub generate_coursenum {
10701: my ($udom,$crstype) = @_;
10702: my $domdesc = &domain($udom);
10703: return 'error: invalid domain' if ($domdesc eq '');
10704: my $first;
10705: if ($crstype eq 'Community') {
10706: $first = '0';
10707: } else {
10708: $first = int(1+rand(9));
10709: }
10710: my $uname=$first.
10711: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
10712: substr($$.time,0,5).unpack("H8",pack("I32",time)).
10713: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
10714: # ----------------------------------------------- Make sure that does not exist
10715: my $uhome=&homeserver($uname,$udom,'true');
10716: unless (($uhome eq '') || ($uhome eq 'no_host')) {
10717: if ($crstype eq 'Community') {
10718: $first = '0';
10719: } else {
10720: $first = int(1+rand(9));
10721: }
10722: $uname=$first.
10723: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
10724: substr($$.time,0,5).unpack("H8",pack("I32",time)).
10725: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
10726: $uhome=&homeserver($uname,$udom,'true');
10727: unless (($uhome eq '') || ($uhome eq 'no_host')) {
10728: return 'error: unable to generate unique course-ID';
10729: }
10730: }
10731: return $uname;
10732: }
10733:
10734: sub is_course {
10735: my ($cdom, $cnum) = scalar(@_) == 1 ?
10736: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
10737:
10738: return unless (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/));
10739: my $uhome=&homeserver($cnum,$cdom);
10740: my $iscourse;
10741: if (grep { $_ eq $uhome } current_machine_ids()) {
10742: $iscourse = &LONCAPA::Lond::is_course($cdom,$cnum);
10743: } else {
10744: my $hashid = $cdom.':'.$cnum;
10745: ($iscourse,my $cached) = &is_cached_new('iscourse',$hashid);
10746: unless (defined($cached)) {
10747: my %courses = &courseiddump($cdom, '.', 1, '.', '.',
10748: $cnum,undef,undef,'.');
10749: $iscourse = 0;
10750: if (exists($courses{$cdom.'_'.$cnum})) {
10751: $iscourse = 1;
10752: }
10753: &do_cache_new('iscourse',$hashid,$iscourse,3600);
10754: }
10755: }
10756: return unless ($iscourse);
10757: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
10758: }
10759:
10760: sub store_userdata {
10761: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
10762: my $result;
10763: if ($datakey ne '') {
10764: if (ref($storehash) eq 'HASH') {
10765: if ($udom eq '' || $uname eq '') {
10766: $udom = $env{'user.domain'};
10767: $uname = $env{'user.name'};
10768: }
10769: my $uhome=&homeserver($uname,$udom);
10770: if (($uhome eq '') || ($uhome eq 'no_host')) {
10771: $result = 'error: no_host';
10772: } else {
10773: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
10774: $storehash->{'host'} = $perlvar{'lonHostID'};
10775:
10776: my $namevalue='';
10777: foreach my $key (keys(%{$storehash})) {
10778: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
10779: }
10780: $namevalue=~s/\&$//;
10781: unless ($namespace eq 'courserequests') {
10782: $datakey = &escape($datakey);
10783: }
10784: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
10785: $namevalue,$uhome);
10786: }
10787: } else {
10788: $result = 'error: data to store was not a hash reference';
10789: }
10790: } else {
10791: $result= 'error: invalid requestkey';
10792: }
10793: return $result;
10794: }
10795:
10796: # ---------------------------------------------------------- Assign Custom Role
10797:
10798: sub assigncustomrole {
10799: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
10800: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
10801: $end,$start,$deleteflag,$selfenroll,$context);
10802: }
10803:
10804: # ----------------------------------------------------------------- Revoke Role
10805:
10806: sub revokerole {
10807: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
10808: my $now=time;
10809: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
10810: }
10811:
10812: # ---------------------------------------------------------- Revoke Custom Role
10813:
10814: sub revokecustomrole {
10815: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
10816: my $now=time;
10817: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
10818: $deleteflag,$selfenroll,$context);
10819: }
10820:
10821: # ------------------------------------------------------------ Disk usage
10822: sub diskusage {
10823: my ($udom,$uname,$directorypath,$getpropath)=@_;
10824: $directorypath =~ s/\/$//;
10825: my $listing=&reply('du2:'.&escape($directorypath).':'
10826: .&escape($getpropath).':'.&escape($uname).':'
10827: .&escape($udom),homeserver($uname,$udom));
10828: if ($listing eq 'unknown_cmd') {
10829: if ($getpropath) {
10830: $directorypath = &propath($udom,$uname).'/'.$directorypath;
10831: }
10832: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
10833: }
10834: return $listing;
10835: }
10836:
10837: sub is_locked {
10838: my ($file_name, $domain, $user, $which) = @_;
10839: my @check;
10840: my $is_locked;
10841: push (@check,$file_name);
10842: my %locked = &get('file_permissions',\@check,
10843: $env{'user.domain'},$env{'user.name'});
10844: my ($tmp)=keys(%locked);
10845: if ($tmp=~/^error:/) { undef(%locked); }
10846:
10847: if (ref($locked{$file_name}) eq 'ARRAY') {
10848: $is_locked = 'false';
10849: foreach my $entry (@{$locked{$file_name}}) {
10850: if (ref($entry) eq 'ARRAY') {
10851: $is_locked = 'true';
10852: if (ref($which) eq 'ARRAY') {
10853: push(@{$which},$entry);
10854: } else {
10855: last;
10856: }
10857: }
10858: }
10859: } else {
10860: $is_locked = 'false';
10861: }
10862: return $is_locked;
10863: }
10864:
10865: sub declutter_portfile {
10866: my ($file) = @_;
10867: $file =~ s{^(/portfolio/|portfolio/)}{/};
10868: return $file;
10869: }
10870:
10871: # ------------------------------------------------------------- Mark as Read Only
10872:
10873: sub mark_as_readonly {
10874: my ($domain,$user,$files,$what) = @_;
10875: my %current_permissions = &dump('file_permissions',$domain,$user);
10876: my ($tmp)=keys(%current_permissions);
10877: if ($tmp=~/^error:/) { undef(%current_permissions); }
10878: foreach my $file (@{$files}) {
10879: $file = &declutter_portfile($file);
10880: push(@{$current_permissions{$file}},$what);
10881: }
10882: &put('file_permissions',\%current_permissions,$domain,$user);
10883: return;
10884: }
10885:
10886: # ------------------------------------------------------------Save Selected Files
10887:
10888: sub save_selected_files {
10889: my ($user, $path, @files) = @_;
10890: my $filename = $user."savedfiles";
10891: my @other_files = &files_not_in_path($user, $path);
10892: open (OUT,'>',LONCAPA::tempdir().$filename);
10893: foreach my $file (@files) {
10894: print (OUT $env{'form.currentpath'}.$file."\n");
10895: }
10896: foreach my $file (@other_files) {
10897: print (OUT $file."\n");
10898: }
10899: close (OUT);
10900: return 'ok';
10901: }
10902:
10903: sub clear_selected_files {
10904: my ($user) = @_;
10905: my $filename = $user."savedfiles";
10906: open (OUT,'>',LONCAPA::tempdir().$filename);
10907: print (OUT undef);
10908: close (OUT);
10909: return ("ok");
10910: }
10911:
10912: sub files_in_path {
10913: my ($user, $path) = @_;
10914: my $filename = $user."savedfiles";
10915: my %return_files;
10916: open (IN,'<',LONCAPA::tempdir().$filename);
10917: while (my $line_in = <IN>) {
10918: chomp ($line_in);
10919: my @paths_and_file = split (m!/!, $line_in);
10920: my $file_part = pop (@paths_and_file);
10921: my $path_part = join ('/', @paths_and_file);
10922: $path_part.='/';
10923: my $path_and_file = $path_part.$file_part;
10924: if ($path_part eq $path) {
10925: $return_files{$file_part}= 'selected';
10926: }
10927: }
10928: close (IN);
10929: return (\%return_files);
10930: }
10931:
10932: # called in portfolio select mode, to show files selected NOT in current directory
10933: sub files_not_in_path {
10934: my ($user, $path) = @_;
10935: my $filename = $user."savedfiles";
10936: my @return_files;
10937: my $path_part;
10938: open(IN, '<',LONCAPA::tempdir().$filename);
10939: while (my $line = <IN>) {
10940: #ok, I know it's clunky, but I want it to work
10941: my @paths_and_file = split(m|/|, $line);
10942: my $file_part = pop(@paths_and_file);
10943: chomp($file_part);
10944: my $path_part = join('/', @paths_and_file);
10945: $path_part .= '/';
10946: my $path_and_file = $path_part.$file_part;
10947: if ($path_part ne $path) {
10948: push(@return_files, ($path_and_file));
10949: }
10950: }
10951: close(OUT);
10952: return (@return_files);
10953: }
10954:
10955: #------------------------------Submitted/Handedback Portfolio Files Versioning
10956:
10957: sub portfiles_versioning {
10958: my ($symb,$domain,$stu_name,$portfiles,$versioned_portfiles) = @_;
10959: my $portfolio_root = '/userfiles/portfolio';
10960: return unless ((ref($portfiles) eq 'ARRAY') && (ref($versioned_portfiles) eq 'ARRAY'));
10961: foreach my $file (@{$portfiles}) {
10962: &unmark_as_readonly($domain,$stu_name,[$symb,$env{'request.course.id'}],$file);
10963: my ($directory,$answer_file) =($file =~ /^(.*?)([^\/]*)$/);
10964: my ($answer_name,$answer_ver,$answer_ext) = &file_name_version_ext($answer_file);
10965: my $getpropath = 1;
10966: my ($dir_list,$listerror) = &dirlist($portfolio_root.$directory,$domain,
10967: $stu_name,$getpropath);
10968: my $version = &get_next_version($answer_name,$answer_ext,$dir_list);
10969: my $new_answer =
10970: &version_selected_portfile($domain,$stu_name,$directory,$answer_file,$version);
10971: if ($new_answer ne 'problem getting file') {
10972: push(@{$versioned_portfiles}, $directory.$new_answer);
10973: &mark_as_readonly($domain,$stu_name,[$directory.$new_answer],
10974: [$symb,$env{'request.course.id'},'graded']);
10975: }
10976: }
10977: }
10978:
10979: sub get_next_version {
10980: my ($answer_name, $answer_ext, $dir_list) = @_;
10981: my $version;
10982: if (ref($dir_list) eq 'ARRAY') {
10983: foreach my $row (@{$dir_list}) {
10984: my ($file) = split(/\&/,$row,2);
10985: my ($file_name,$file_version,$file_ext) =
10986: &file_name_version_ext($file);
10987: if (($file_name eq $answer_name) &&
10988: ($file_ext eq $answer_ext)) {
10989: # gets here if filename and extension match,
10990: # regardless of version
10991: if ($file_version ne '') {
10992: # a versioned file is found so save it for later
10993: if ($file_version > $version) {
10994: $version = $file_version;
10995: }
10996: }
10997: }
10998: }
10999: }
11000: $version ++;
11001: return($version);
11002: }
11003:
11004: sub version_selected_portfile {
11005: my ($domain,$stu_name,$directory,$file_name,$version) = @_;
11006: my ($answer_name,$answer_ver,$answer_ext) =
11007: &file_name_version_ext($file_name);
11008: my $new_answer;
11009: $env{'form.copy'} =
11010: &getfile("/uploaded/$domain/$stu_name/portfolio$directory$file_name");
11011: if($env{'form.copy'} eq '-1') {
11012: $new_answer = 'problem getting file';
11013: } else {
11014: $new_answer = $answer_name.'.'.$version.'.'.$answer_ext;
11015: my $copy_result =
11016: &finishuserfileupload($stu_name,$domain,'copy',
11017: '/portfolio'.$directory.$new_answer);
11018: }
11019: undef($env{'form.copy'});
11020: return ($new_answer);
11021: }
11022:
11023: sub file_name_version_ext {
11024: my ($file)=@_;
11025: my @file_parts = split(/\./, $file);
11026: my ($name,$version,$ext);
11027: if (@file_parts > 1) {
11028: $ext=pop(@file_parts);
11029: if (@file_parts > 1 && $file_parts[-1] =~ /^\d+$/) {
11030: $version=pop(@file_parts);
11031: }
11032: $name=join('.',@file_parts);
11033: } else {
11034: $name=join('.',@file_parts);
11035: }
11036: return($name,$version,$ext);
11037: }
11038:
11039: #----------------------------------------------Get portfolio file permissions
11040:
11041: sub get_portfile_permissions {
11042: my ($domain,$user) = @_;
11043: my %current_permissions = &dump('file_permissions',$domain,$user);
11044: my ($tmp)=keys(%current_permissions);
11045: if ($tmp=~/^error:/) { undef(%current_permissions); }
11046: return \%current_permissions;
11047: }
11048:
11049: #---------------------------------------------Get portfolio file access controls
11050:
11051: sub get_access_controls {
11052: my ($current_permissions,$group,$file) = @_;
11053: my %access;
11054: my $real_file = $file;
11055: $file =~ s/\.meta$//;
11056: if (defined($file)) {
11057: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
11058: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
11059: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
11060: }
11061: }
11062: } else {
11063: foreach my $key (keys(%{$current_permissions})) {
11064: if ($key =~ /\0accesscontrol$/) {
11065: if (defined($group)) {
11066: if ($key !~ m-^\Q$group\E/-) {
11067: next;
11068: }
11069: }
11070: my ($fullpath) = split(/\0/,$key);
11071: if (ref($$current_permissions{$key}) eq 'HASH') {
11072: foreach my $control (keys(%{$$current_permissions{$key}})) {
11073: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
11074: }
11075: }
11076: }
11077: }
11078: }
11079: return %access;
11080: }
11081:
11082: sub modify_access_controls {
11083: my ($file_name,$changes,$domain,$user)=@_;
11084: my ($outcome,$deloutcome);
11085: my %store_permissions;
11086: my %new_values;
11087: my %new_control;
11088: my %translation;
11089: my @deletions = ();
11090: my $now = time;
11091: if (exists($$changes{'activate'})) {
11092: if (ref($$changes{'activate'}) eq 'HASH') {
11093: my @newitems = sort(keys(%{$$changes{'activate'}}));
11094: my $numnew = scalar(@newitems);
11095: for (my $i=0; $i<$numnew; $i++) {
11096: my $newkey = $newitems[$i];
11097: my $newid = &Apache::loncommon::get_cgi_id();
11098: if ($newkey =~ /^\d+:/) {
11099: $newkey =~ s/^(\d+)/$newid/;
11100: $translation{$1} = $newid;
11101: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
11102: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
11103: $translation{$1} = $newid;
11104: }
11105: $new_values{$file_name."\0".$newkey} =
11106: $$changes{'activate'}{$newitems[$i]};
11107: $new_control{$newkey} = $now;
11108: }
11109: }
11110: }
11111: my %todelete;
11112: my %changed_items;
11113: foreach my $action ('delete','update') {
11114: if (exists($$changes{$action})) {
11115: if (ref($$changes{$action}) eq 'HASH') {
11116: foreach my $key (keys(%{$$changes{$action}})) {
11117: my ($itemnum) = ($key =~ /^([^:]+):/);
11118: if ($action eq 'delete') {
11119: $todelete{$itemnum} = 1;
11120: } else {
11121: $changed_items{$itemnum} = $key;
11122: }
11123: }
11124: }
11125: }
11126: }
11127: # get lock on access controls for file.
11128: my $lockhash = {
11129: $file_name."\0".'locked_access_records' => $env{'user.name'}.
11130: ':'.$env{'user.domain'},
11131: };
11132: my $tries = 0;
11133: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
11134:
11135: while (($gotlock ne 'ok') && $tries < 10) {
11136: $tries ++;
11137: sleep(0.1);
11138: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
11139: }
11140: if ($gotlock eq 'ok') {
11141: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
11142: my ($tmp)=keys(%curr_permissions);
11143: if ($tmp=~/^error:/) { undef(%curr_permissions); }
11144: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
11145: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
11146: if (ref($curr_controls) eq 'HASH') {
11147: foreach my $control_item (keys(%{$curr_controls})) {
11148: my ($itemnum) = ($control_item =~ /^([^:]+):/);
11149: if (defined($todelete{$itemnum})) {
11150: push(@deletions,$file_name."\0".$control_item);
11151: } else {
11152: if (defined($changed_items{$itemnum})) {
11153: $new_control{$changed_items{$itemnum}} = $now;
11154: push(@deletions,$file_name."\0".$control_item);
11155: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
11156: } else {
11157: $new_control{$control_item} = $$curr_controls{$control_item};
11158: }
11159: }
11160: }
11161: }
11162: }
11163: my ($group);
11164: if (&is_course($domain,$user)) {
11165: ($group,my $file) = split(/\//,$file_name,2);
11166: }
11167: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
11168: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
11169: $outcome = &put('file_permissions',\%new_values,$domain,$user);
11170: # remove lock
11171: my @del_lock = ($file_name."\0".'locked_access_records');
11172: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
11173: my $sqlresult =
11174: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
11175: $group);
11176: } else {
11177: $outcome = "error: could not obtain lockfile\n";
11178: }
11179: return ($outcome,$deloutcome,\%new_values,\%translation);
11180: }
11181:
11182: sub make_public_indefinitely {
11183: my (@requrl) = @_;
11184: return &automated_portfile_access('public',\@requrl);
11185: }
11186:
11187: sub automated_portfile_access {
11188: my ($accesstype,$addsref,$delsref,$info) = @_;
11189: unless (($accesstype eq 'public') || ($accesstype eq 'ip')) {
11190: return 'invalid';
11191: }
11192: my %urls;
11193: if (ref($addsref) eq 'ARRAY') {
11194: foreach my $requrl (@{$addsref}) {
11195: if (&is_portfolio_url($requrl)) {
11196: unless (exists($urls{$requrl})) {
11197: $urls{$requrl} = 'add';
11198: }
11199: }
11200: }
11201: }
11202: if (ref($delsref) eq 'ARRAY') {
11203: foreach my $requrl (@{$delsref}) {
11204: if (&is_portfolio_url($requrl)) {
11205: unless (exists($urls{$requrl})) {
11206: $urls{$requrl} = 'delete';
11207: }
11208: }
11209: }
11210: }
11211: unless (keys(%urls)) {
11212: return 'invalid';
11213: }
11214: my $ip;
11215: if ($accesstype eq 'ip') {
11216: if (ref($info) eq 'HASH') {
11217: if ($info->{'ip'} ne '') {
11218: $ip = $info->{'ip'};
11219: }
11220: }
11221: if ($ip eq '') {
11222: return 'invalid';
11223: }
11224: }
11225: my $errors;
11226: my $now = time;
11227: my %current_perms;
11228: foreach my $requrl (sort(keys(%urls))) {
11229: my $action;
11230: if ($urls{$requrl} eq 'add') {
11231: $action = 'activate';
11232: } else {
11233: $action = 'none';
11234: }
11235: my $aclnum = 0;
11236: my (undef,$udom,$unum,$file_name,$group) =
11237: &parse_portfolio_url($requrl);
11238: unless (exists($current_perms{$unum.':'.$udom})) {
11239: $current_perms{$unum.':'.$udom} = &get_portfile_permissions($udom,$unum);
11240: }
11241: my %access_controls = &get_access_controls($current_perms{$unum.':'.$udom},
11242: $group,$file_name);
11243: foreach my $key (keys(%{$access_controls{$file_name}})) {
11244: my ($num,$scope,$end,$start) =
11245: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
11246: if ($scope eq $accesstype) {
11247: if (($start <= $now) && ($end == 0)) {
11248: if ($accesstype eq 'ip') {
11249: if (ref($access_controls{$file_name}{$key}) eq 'HASH') {
11250: if (ref($access_controls{$file_name}{$key}{'ip'}) eq 'ARRAY') {
11251: if (grep(/^\Q$ip\E$/,@{$access_controls{$file_name}{$key}{'ip'}})) {
11252: if ($urls{$requrl} eq 'add') {
11253: $action = 'none';
11254: last;
11255: } else {
11256: $action = 'delete';
11257: $aclnum = $num;
11258: last;
11259: }
11260: }
11261: }
11262: }
11263: } elsif ($accesstype eq 'public') {
11264: if ($urls{$requrl} eq 'add') {
11265: $action = 'none';
11266: last;
11267: } else {
11268: $action = 'delete';
11269: $aclnum = $num;
11270: last;
11271: }
11272: }
11273: } elsif ($accesstype eq 'public') {
11274: $action = 'update';
11275: $aclnum = $num;
11276: last;
11277: }
11278: }
11279: }
11280: if ($action eq 'none') {
11281: next;
11282: } else {
11283: my %changes;
11284: my $newend = 0;
11285: my $newstart = $now;
11286: my $newkey = $aclnum.':'.$accesstype.'_'.$newend.'_'.$newstart;
11287: $changes{$action}{$newkey} = {
11288: type => $accesstype,
11289: time => {
11290: start => $newstart,
11291: end => $newend,
11292: },
11293: };
11294: if ($accesstype eq 'ip') {
11295: $changes{$action}{$newkey}{'ip'} = [$ip];
11296: }
11297: my ($outcome,$deloutcome,$new_values,$translation) =
11298: &modify_access_controls($file_name,\%changes,$udom,$unum);
11299: unless ($outcome eq 'ok') {
11300: $errors .= $outcome.' ';
11301: }
11302: }
11303: }
11304: if ($errors) {
11305: $errors =~ s/\s$//;
11306: return $errors;
11307: } else {
11308: return 'ok';
11309: }
11310: }
11311:
11312: #------------------------------------------------------Get Marked as Read Only
11313:
11314: sub get_marked_as_readonly {
11315: my ($domain,$user,$what,$group) = @_;
11316: my $current_permissions = &get_portfile_permissions($domain,$user);
11317: my @readonly_files;
11318: my $cmp1=$what;
11319: if (ref($what)) { $cmp1=join('',@{$what}) };
11320: while (my ($file_name,$value) = each(%{$current_permissions})) {
11321: if (defined($group)) {
11322: if ($file_name !~ m-^\Q$group\E/-) {
11323: next;
11324: }
11325: }
11326: if (ref($value) eq "ARRAY"){
11327: foreach my $stored_what (@{$value}) {
11328: my $cmp2=$stored_what;
11329: if (ref($stored_what) eq 'ARRAY') {
11330: $cmp2=join('',@{$stored_what});
11331: }
11332: if ($cmp1 eq $cmp2) {
11333: push(@readonly_files, $file_name);
11334: last;
11335: } elsif (!defined($what)) {
11336: push(@readonly_files, $file_name);
11337: last;
11338: }
11339: }
11340: }
11341: }
11342: return @readonly_files;
11343: }
11344: #-----------------------------------------------------------Get Marked as Read Only Hash
11345:
11346: sub get_marked_as_readonly_hash {
11347: my ($current_permissions,$group,$what) = @_;
11348: my %readonly_files;
11349: while (my ($file_name,$value) = each(%{$current_permissions})) {
11350: if (defined($group)) {
11351: if ($file_name !~ m-^\Q$group\E/-) {
11352: next;
11353: }
11354: }
11355: if (ref($value) eq "ARRAY"){
11356: foreach my $stored_what (@{$value}) {
11357: if (ref($stored_what) eq 'ARRAY') {
11358: foreach my $lock_descriptor(@{$stored_what}) {
11359: if ($lock_descriptor eq 'graded') {
11360: $readonly_files{$file_name} = 'graded';
11361: } elsif ($lock_descriptor eq 'handback') {
11362: $readonly_files{$file_name} = 'handback';
11363: } else {
11364: if (!exists($readonly_files{$file_name})) {
11365: $readonly_files{$file_name} = 'locked';
11366: }
11367: }
11368: }
11369: }
11370: }
11371: }
11372: }
11373: return %readonly_files;
11374: }
11375: # ------------------------------------------------------------ Unmark as Read Only
11376:
11377: sub unmark_as_readonly {
11378: # unmarks $file_name (if $file_name is defined), or all files locked by $what
11379: # for portfolio submissions, $what contains [$symb,$crsid]
11380: my ($domain,$user,$what,$file_name,$group) = @_;
11381: $file_name = &declutter_portfile($file_name);
11382: my $symb_crs = $what;
11383: if (ref($what)) { $symb_crs=join('',@$what); }
11384: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
11385: my ($tmp)=keys(%current_permissions);
11386: if ($tmp=~/^error:/) { undef(%current_permissions); }
11387: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
11388: foreach my $file (@readonly_files) {
11389: my $clean_file = &declutter_portfile($file);
11390: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
11391: my $current_locks = $current_permissions{$file};
11392: my @new_locks;
11393: my @del_keys;
11394: if (ref($current_locks) eq "ARRAY"){
11395: foreach my $locker (@{$current_locks}) {
11396: my $compare=$locker;
11397: if (ref($locker) eq 'ARRAY') {
11398: $compare=join('',@{$locker});
11399: if ($compare ne $symb_crs) {
11400: push(@new_locks, $locker);
11401: }
11402: }
11403: }
11404: if (scalar(@new_locks) > 0) {
11405: $current_permissions{$file} = \@new_locks;
11406: } else {
11407: push(@del_keys, $file);
11408: &del('file_permissions',\@del_keys, $domain, $user);
11409: delete($current_permissions{$file});
11410: }
11411: }
11412: }
11413: &put('file_permissions',\%current_permissions,$domain,$user);
11414: return;
11415: }
11416:
11417: # ------------------------------------------------------------ Directory lister
11418:
11419: sub dirlist {
11420: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
11421: $uri=~s/^\///;
11422: $uri=~s/\/$//;
11423: my ($udom, $uname);
11424: if ($getuserdir) {
11425: $udom = $userdomain;
11426: $uname = $username;
11427: } else {
11428: (undef,$udom,$uname)=split(/\//,$uri);
11429: if(defined($userdomain)) {
11430: $udom = $userdomain;
11431: }
11432: if(defined($username)) {
11433: $uname = $username;
11434: }
11435: }
11436: my ($dirRoot,$listing,@listing_results);
11437:
11438: $dirRoot = $perlvar{'lonDocRoot'};
11439: if (defined($getpropath)) {
11440: $dirRoot = &propath($udom,$uname);
11441: $dirRoot =~ s/\/$//;
11442: } elsif (defined($getuserdir)) {
11443: my $subdir=$uname.'__';
11444: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
11445: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
11446: ."/$udom/$subdir/$uname";
11447: } elsif (defined($alternateRoot)) {
11448: $dirRoot = $alternateRoot;
11449: }
11450:
11451: if($udom) {
11452: if($uname) {
11453: my $uhome = &homeserver($uname,$udom);
11454: if ($uhome eq 'no_host') {
11455: return ([],'no_host');
11456: }
11457: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
11458: .$getuserdir.':'.&escape($dirRoot)
11459: .':'.&escape($uname).':'.&escape($udom),$uhome);
11460: if ($listing eq 'unknown_cmd') {
11461: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
11462: } else {
11463: @listing_results = map { &unescape($_); } split(/:/,$listing);
11464: }
11465: if ($listing eq 'unknown_cmd') {
11466: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
11467: @listing_results = split(/:/,$listing);
11468: } else {
11469: @listing_results = map { &unescape($_); } split(/:/,$listing);
11470: }
11471: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
11472: ($listing eq 'rejected') || ($listing eq 'refused') ||
11473: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
11474: return ([],$listing);
11475: } else {
11476: return (\@listing_results);
11477: }
11478: } elsif(!$alternateRoot) {
11479: my (%allusers,%listerror);
11480: my %servers = &get_servers($udom,'library');
11481: foreach my $tryserver (keys(%servers)) {
11482: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
11483: &escape($udom),$tryserver);
11484: if ($listing eq 'unknown_cmd') {
11485: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
11486: $udom, $tryserver);
11487: } else {
11488: @listing_results = map { &unescape($_); } split(/:/,$listing);
11489: }
11490: if ($listing eq 'unknown_cmd') {
11491: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
11492: $udom, $tryserver);
11493: @listing_results = split(/:/,$listing);
11494: } else {
11495: @listing_results =
11496: map { &unescape($_); } split(/:/,$listing);
11497: }
11498: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
11499: ($listing eq 'rejected') || ($listing eq 'refused') ||
11500: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
11501: $listerror{$tryserver} = $listing;
11502: } else {
11503: foreach my $line (@listing_results) {
11504: my ($entry) = split(/&/,$line,2);
11505: $allusers{$entry} = 1;
11506: }
11507: }
11508: }
11509: my @alluserslist=();
11510: foreach my $user (sort(keys(%allusers))) {
11511: push(@alluserslist,$user.'&user');
11512: }
11513:
11514: if (!%listerror) {
11515: # no errors
11516: return (\@alluserslist);
11517: } elsif (scalar(keys(%servers)) == 1) {
11518: # one library server, one error
11519: my ($key) = keys(%listerror);
11520: return (\@alluserslist, $listerror{$key});
11521: } elsif ( grep { $_ eq 'con_lost' } values(%listerror) ) {
11522: # con_lost indicates that we might miss data from at least one
11523: # library server
11524: return (\@alluserslist, 'con_lost');
11525: } else {
11526: # multiple library servers and no con_lost -> data should be
11527: # complete.
11528: return (\@alluserslist);
11529: }
11530:
11531: } else {
11532: return ([],'missing username');
11533: }
11534: } elsif(!defined($getpropath)) {
11535: my $path = $perlvar{'lonDocRoot'}.'/res/';
11536: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
11537: return (\@all_domains);
11538: } else {
11539: return ([],'missing domain');
11540: }
11541: }
11542:
11543: # --------------------------------------------- GetFileTimestamp
11544: # This function utilizes dirlist and returns the date stamp for
11545: # when it was last modified. It will also return an error of -1
11546: # if an error occurs
11547:
11548: sub GetFileTimestamp {
11549: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
11550: $studentDomain = &LONCAPA::clean_domain($studentDomain);
11551: $studentName = &LONCAPA::clean_username($studentName);
11552: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
11553: undef,$getuserdir);
11554: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
11555: return -1;
11556: }
11557: if (ref($fileref) eq 'ARRAY') {
11558: my @stats = split('&',$fileref->[0]);
11559: # @stats contains first the filename, then the stat output
11560: return $stats[10]; # so this is 10 instead of 9.
11561: } else {
11562: return -1;
11563: }
11564: }
11565:
11566: sub stat_file {
11567: my ($uri) = @_;
11568: $uri = &clutter_with_no_wrapper($uri);
11569:
11570: my ($udom,$uname,$file);
11571: if ($uri =~ m-^/(uploaded|editupload)/-) {
11572: ($udom,$uname,$file) =
11573: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
11574: $file = 'userfiles/'.$file;
11575: }
11576: if ($uri =~ m-^/res/-) {
11577: ($udom,$uname) =
11578: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
11579: $file = $uri;
11580: }
11581:
11582: if (!$udom || !$uname || !$file) {
11583: # unable to handle the uri
11584: return ();
11585: }
11586: my $getpropath;
11587: if ($file =~ /^userfiles\//) {
11588: $getpropath = 1;
11589: }
11590: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
11591: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
11592: return ();
11593: } else {
11594: if (ref($listref) eq 'ARRAY') {
11595: my @stats = split('&',$listref->[0]);
11596: shift(@stats); #filename is first
11597: return @stats;
11598: }
11599: }
11600: return ();
11601: }
11602:
11603: # --------------------------------------------------------- recursedirs
11604: # Recursive function to traverse either a specific user's Authoring Space
11605: # or corresponding Published Resource Space, and populate the hash ref:
11606: # $dirhashref with URLs of all directories, and if $filehashref hash
11607: # ref arg is provided, the URLs of any files, excluding versioned, .meta,
11608: # or .rights files in resource space, and .meta, .save, .log, and .bak
11609: # files in Authoring Space.
11610: #
11611: # Inputs:
11612: #
11613: # $is_home - true if current server is home server for user's space
11614: # $context - either: priv, or res respectively for Authoring or Resource Space.
11615: # $docroot - Document root (i.e., /home/httpd/html
11616: # $toppath - Top level directory (i.e., /res/$dom/$uname or /priv/$dom/$uname
11617: # $relpath - Current path (relative to top level).
11618: # $dirhashref - reference to hash to populate with URLs of directories (Required)
11619: # $filehashref - reference to hash to populate with URLs of files (Optional)
11620: #
11621: # Returns: nothing
11622: #
11623: # Side Effects: populates $dirhashref, and $filehashref (if provided).
11624: #
11625: # Currently used by interface/londocs.pm to create linked select boxes for
11626: # directory and filename to import a Course "Author" resource into a course, and
11627: # also to create linked select boxes for Authoring Space and Directory to choose
11628: # save location for creation of a new "standard" problem from the Course Editor.
11629: #
11630:
11631: sub recursedirs {
11632: my ($is_home,$context,$docroot,$toppath,$relpath,$dirhashref,$filehashref) = @_;
11633: return unless (ref($dirhashref) eq 'HASH');
11634: my $currpath = $docroot.$toppath;
11635: if ($relpath) {
11636: $currpath .= "/$relpath";
11637: }
11638: my $savefile;
11639: if (ref($filehashref)) {
11640: $savefile = 1;
11641: }
11642: if ($is_home) {
11643: if (opendir(my $dirh,$currpath)) {
11644: foreach my $item (sort { lc($a) cmp lc($b) } grep(!/^\.+$/,readdir($dirh))) {
11645: next if ($item eq '');
11646: if (-d "$currpath/$item") {
11647: my $newpath;
11648: if ($relpath) {
11649: $newpath = "$relpath/$item";
11650: } else {
11651: $newpath = $item;
11652: }
11653: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
11654: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
11655: } elsif ($savefile) {
11656: if ($context eq 'priv') {
11657: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
11658: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
11659: }
11660: } else {
11661: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/) || ($item =~ /\.rights$/)) {
11662: $filehashref->{&Apache::lonlocal::js_escape($relpath)}{$item} = 1;
11663: }
11664: }
11665: }
11666: }
11667: closedir($dirh);
11668: }
11669: } else {
11670: my ($dirlistref,$listerror) =
11671: &dirlist($toppath.$relpath);
11672: my @dir_lines;
11673: my $dirptr=16384;
11674: if (ref($dirlistref) eq 'ARRAY') {
11675: foreach my $dir_line (sort
11676: {
11677: my ($afile)=split('&',$a,2);
11678: my ($bfile)=split('&',$b,2);
11679: return (lc($afile) cmp lc($bfile));
11680: } (@{$dirlistref})) {
11681: my ($item,$dom,undef,$testdir,undef,undef,undef,undef,$size,undef,$mtime,undef,undef,undef,$obs,undef) =
11682: split(/\&/,$dir_line,16);
11683: $item =~ s/\s+$//;
11684: next if (($item =~ /^\.\.?$/) || ($obs));
11685: if ($dirptr&$testdir) {
11686: my $newpath;
11687: if ($relpath) {
11688: $newpath = "$relpath/$item";
11689: } else {
11690: $relpath = '/';
11691: $newpath = $item;
11692: }
11693: $dirhashref->{&Apache::lonlocal::js_escape($newpath)} = 1;
11694: &recursedirs($is_home,$context,$docroot,$toppath,$newpath,$dirhashref,$filehashref);
11695: } elsif ($savefile) {
11696: if ($context eq 'priv') {
11697: unless ($item =~ /\.(meta|save|log|bak|DS_Store)$/) {
11698: $filehashref->{$relpath}{$item} = 1;
11699: }
11700: } else {
11701: unless (($item =~ /\.meta$/) || ($item =~ /\.\d+\.\w+$/)) {
11702: $filehashref->{$relpath}{$item} = 1;
11703: }
11704: }
11705: }
11706: }
11707: }
11708: }
11709: return;
11710: }
11711:
11712: # -------------------------------------------------------- Value of a Condition
11713:
11714: # gets the value of a specific preevaluated condition
11715: # stored in the string $env{user.state.<cid>}
11716: # or looks up a condition reference in the bighash and if if hasn't
11717: # already been evaluated recurses into docondval to get the value of
11718: # the condition, then memoizing it to
11719: # $env{user.state.<cid>.<condition>}
11720: sub directcondval {
11721: my $number=shift;
11722: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
11723: &Apache::lonuserstate::evalstate();
11724: }
11725: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
11726: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
11727: } elsif ($number =~ /^_/) {
11728: my $sub_condition;
11729: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11730: &GDBM_READER(),0640)) {
11731: $sub_condition=$bighash{'conditions'.$number};
11732: untie(%bighash);
11733: }
11734: my $value = &docondval($sub_condition);
11735: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
11736: return $value;
11737: }
11738: if ($env{'user.state.'.$env{'request.course.id'}}) {
11739: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
11740: } else {
11741: return 2;
11742: }
11743: }
11744:
11745: # get the collection of conditions for this resource
11746: sub condval {
11747: my $condidx=shift;
11748: my $allpathcond='';
11749: foreach my $cond (split(/\|/,$condidx)) {
11750: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
11751: $allpathcond.=
11752: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
11753: }
11754: }
11755: $allpathcond=~s/\|$//;
11756: return &docondval($allpathcond);
11757: }
11758:
11759: #evaluates an expression of conditions
11760: sub docondval {
11761: my ($allpathcond) = @_;
11762: my $result=0;
11763: if ($env{'request.course.id'}
11764: && defined($allpathcond)) {
11765: my $operand='|';
11766: my @stack;
11767: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
11768: if ($chunk eq '(') {
11769: push @stack,($operand,$result);
11770: } elsif ($chunk eq ')') {
11771: my $before=pop @stack;
11772: if (pop @stack eq '&') {
11773: $result=$result>$before?$before:$result;
11774: } else {
11775: $result=$result>$before?$result:$before;
11776: }
11777: } elsif (($chunk eq '&') || ($chunk eq '|')) {
11778: $operand=$chunk;
11779: } else {
11780: my $new=directcondval($chunk);
11781: if ($operand eq '&') {
11782: $result=$result>$new?$new:$result;
11783: } else {
11784: $result=$result>$new?$result:$new;
11785: }
11786: }
11787: }
11788: }
11789: return $result;
11790: }
11791:
11792: # ---------------------------------------------------- Devalidate courseresdata
11793:
11794: sub devalidatecourseresdata {
11795: my ($coursenum,$coursedomain)=@_;
11796: my $hashid=$coursenum.':'.$coursedomain;
11797: &devalidate_cache_new('courseres',$hashid);
11798: }
11799:
11800:
11801: # --------------------------------------------------- Course Resourcedata Query
11802: #
11803: # Parameters:
11804: # $coursenum - Number of the course.
11805: # $coursedomain - Domain at which the course was created.
11806: # Returns:
11807: # A hash of the course parameters along (I think) with timestamps
11808: # and version info.
11809:
11810: sub get_courseresdata {
11811: my ($coursenum,$coursedomain)=@_;
11812: my $coursehom=&homeserver($coursenum,$coursedomain);
11813: my $hashid=$coursenum.':'.$coursedomain;
11814: my ($result,$cached)=&is_cached_new('courseres',$hashid);
11815: my %dumpreply;
11816: unless (defined($cached)) {
11817: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
11818: $result=\%dumpreply;
11819: my ($tmp) = keys(%dumpreply);
11820: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
11821: &do_cache_new('courseres',$hashid,$result,600);
11822: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
11823: return $tmp;
11824: } elsif ($tmp =~ /^(error)/) {
11825: $result=undef;
11826: &do_cache_new('courseres',$hashid,$result,600);
11827: }
11828: }
11829: return $result;
11830: }
11831:
11832: sub devalidateuserresdata {
11833: my ($uname,$udom)=@_;
11834: my $hashid="$udom:$uname";
11835: &devalidate_cache_new('userres',$hashid);
11836: }
11837:
11838: sub get_userresdata {
11839: my ($uname,$udom)=@_;
11840: #most student don\'t have any data set, check if there is some data
11841: if (&EXT_cache_status($udom,$uname)) { return undef; }
11842:
11843: my $hashid="$udom:$uname";
11844: my ($result,$cached)=&is_cached_new('userres',$hashid);
11845: if (!defined($cached)) {
11846: my %resourcedata=&dump('resourcedata',$udom,$uname);
11847: $result=\%resourcedata;
11848: &do_cache_new('userres',$hashid,$result,600);
11849: }
11850: my ($tmp)=keys(%$result);
11851: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
11852: return $result;
11853: }
11854: #error 2 occurs when the .db doesn't exist
11855: if ($tmp!~/error: 2 /) {
11856: if ((!defined($cached)) || ($tmp ne 'con_lost')) {
11857: &logthis("<font color=\"blue\">WARNING:".
11858: " Trying to get resource data for ".
11859: $uname." at ".$udom.": ".
11860: $tmp."</font>");
11861: }
11862: } elsif ($tmp=~/error: 2 /) {
11863: #&EXT_cache_set($udom,$uname);
11864: &do_cache_new('userres',$hashid,undef,600);
11865: undef($tmp); # not really an error so don't send it back
11866: }
11867: return $tmp;
11868: }
11869: #----------------------------------------------- resdata - return resource data
11870: # Purpose:
11871: # Return resource data for either users or for a course.
11872: # Parameters:
11873: # $name - Course/user name.
11874: # $domain - Name of the domain the user/course is registered on.
11875: # $type - Type of thing $name is (must be 'course' or 'user')
11876: # $mapp - decluttered URL of enclosing map
11877: # $recursed - Ref to scalar -- set to 1, if nested maps have been recursed.
11878: # $recurseup - Ref to array of map URLs, starting with map containing
11879: # $mapp up through hierarchy of nested maps to top level map.
11880: # $courseid - CourseID (first part of param identifier).
11881: # $modifier - Middle part of param identifier.
11882: # $what - Last part of param identifier.
11883: # @which - Array of names of resources desired.
11884: # Returns:
11885: # The value of the first reasource in @which that is found in the
11886: # resource hash.
11887: # Exceptional Conditions:
11888: # If the $type passed in is not valid (not the string 'course' or
11889: # 'user', an undefined reference is returned.
11890: # If none of the resources are found, an undef is returned
11891: sub resdata {
11892: my ($name,$domain,$type,$mapp,$recursed,$recurseup,$courseid,
11893: $modifier,$what,@which)=@_;
11894: my $result;
11895: if ($type eq 'course') {
11896: $result=&get_courseresdata($name,$domain);
11897: } elsif ($type eq 'user') {
11898: $result=&get_userresdata($name,$domain);
11899: }
11900: if (!ref($result)) { return $result; }
11901: foreach my $item (@which) {
11902: if ($item->[1] eq 'course') {
11903: if ((ref($recurseup) eq 'ARRAY') && (ref($recursed) eq 'SCALAR')) {
11904: unless ($$recursed) {
11905: @{$recurseup} = &get_map_hierarchy($mapp,$courseid);
11906: $$recursed = 1;
11907: }
11908: foreach my $item (@${recurseup}) {
11909: my $norecursechk=$courseid.$modifier.$item.'___(all).'.$what;
11910: last if (defined($result->{$norecursechk}));
11911: my $recursechk=$courseid.$modifier.$item.'___(rec).'.$what;
11912: if (defined($result->{$recursechk})) { return [$result->{$recursechk},'map']; }
11913: }
11914: }
11915: }
11916: if (defined($result->{$item->[0]})) {
11917: return [$result->{$item->[0]},$item->[1]];
11918: }
11919: }
11920: return undef;
11921: }
11922:
11923: sub get_domain_lti {
11924: my ($cdom,$context) = @_;
11925: my ($name,%lti);
11926: if ($context eq 'consumer') {
11927: $name = 'ltitools';
11928: } elsif ($context eq 'provider') {
11929: $name = 'lti';
11930: } else {
11931: return %lti;
11932: }
11933: my ($result,$cached)=&is_cached_new($name,$cdom);
11934: if (defined($cached)) {
11935: if (ref($result) eq 'HASH') {
11936: %lti = %{$result};
11937: }
11938: } else {
11939: my %domconfig = &get_dom('configuration',[$name],$cdom);
11940: if (ref($domconfig{$name}) eq 'HASH') {
11941: %lti = %{$domconfig{$name}};
11942: my %encdomconfig = &get_dom('encconfig',[$name],$cdom);
11943: if (ref($encdomconfig{$name}) eq 'HASH') {
11944: foreach my $id (keys(%lti)) {
11945: if (ref($encdomconfig{$name}{$id}) eq 'HASH') {
11946: foreach my $item ('key','secret') {
11947: $lti{$id}{$item} = $encdomconfig{$name}{$id}{$item};
11948: }
11949: }
11950: }
11951: }
11952: }
11953: my $cachetime = 24*60*60;
11954: &do_cache_new($name,$cdom,\%lti,$cachetime);
11955: }
11956: return %lti;
11957: }
11958:
11959: sub get_numsuppfiles {
11960: my ($cnum,$cdom,$ignorecache)=@_;
11961: my $hashid=$cnum.':'.$cdom;
11962: my ($suppcount,$cached);
11963: unless ($ignorecache) {
11964: ($suppcount,$cached) = &is_cached_new('suppcount',$hashid);
11965: }
11966: unless (defined($cached)) {
11967: my $chome=&homeserver($cnum,$cdom);
11968: unless ($chome eq 'no_host') {
11969: ($suppcount,my $supptools,my $errors) = (0,0,0);
11970: my $suppmap = 'supplemental.sequence';
11971: ($suppcount,$supptools,$errors) =
11972: &Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,
11973: $supptools,$errors);
11974: }
11975: &do_cache_new('suppcount',$hashid,$suppcount,600);
11976: }
11977: return $suppcount;
11978: }
11979:
11980: #
11981: # EXT resource caching routines
11982: #
11983:
11984: {
11985: # Cache (5 seconds) of map hierarchy for speedup of navmaps display
11986: #
11987: # The course for which we cache
11988: my $cachedmapkey='';
11989: # The cached recursive maps for this course
11990: my %cachedmaps=();
11991: # When this was last done
11992: my $cachedmaptime='';
11993:
11994: sub clear_EXT_cache_status {
11995: &delenv('cache.EXT.');
11996: }
11997:
11998: sub EXT_cache_status {
11999: my ($target_domain,$target_user) = @_;
12000: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
12001: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
12002: # We know already the user has no data
12003: return 1;
12004: } else {
12005: return 0;
12006: }
12007: }
12008:
12009: sub EXT_cache_set {
12010: my ($target_domain,$target_user) = @_;
12011: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
12012: #&appenv({$cachename => time});
12013: }
12014:
12015: # --------------------------------------------------------- Value of a Variable
12016: sub EXT {
12017:
12018: my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid)=@_;
12019: unless ($varname) { return ''; }
12020: #get real user name/domain, courseid and symb
12021: my $courseid;
12022: my $publicuser;
12023: if ($symbparm) {
12024: $symbparm=&get_symb_from_alias($symbparm);
12025: }
12026: if (!($uname && $udom)) {
12027: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
12028: if (!$symbparm) { $symbparm=$cursymb; }
12029: } else {
12030: $courseid=$env{'request.course.id'};
12031: }
12032: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
12033: my $rest;
12034: if (defined($therest[0])) {
12035: $rest=join('.',@therest);
12036: } else {
12037: $rest='';
12038: }
12039:
12040: my $qualifierrest=$qualifier;
12041: if ($rest) { $qualifierrest.='.'.$rest; }
12042: my $spacequalifierrest=$space;
12043: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
12044: if ($realm eq 'user') {
12045: # --------------------------------------------------------------- user.resource
12046: if ($space eq 'resource') {
12047: if ( (defined($Apache::lonhomework::parsing_a_problem)
12048: || defined($Apache::lonhomework::parsing_a_task))
12049: &&
12050: ($symbparm eq &symbread()) ) {
12051: # if we are in the middle of processing the resource the
12052: # get the value we are planning on committing
12053: if (defined($Apache::lonhomework::results{$qualifierrest})) {
12054: return $Apache::lonhomework::results{$qualifierrest};
12055: } else {
12056: return $Apache::lonhomework::history{$qualifierrest};
12057: }
12058: } else {
12059: my %restored;
12060: if ($publicuser || $env{'request.state'} eq 'construct') {
12061: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
12062: } else {
12063: %restored=&restore($symbparm,$courseid,$udom,$uname);
12064: }
12065: return $restored{$qualifierrest};
12066: }
12067: # ----------------------------------------------------------------- user.access
12068: } elsif ($space eq 'access') {
12069: # FIXME - not supporting calls for a specific user
12070: return &allowed($qualifier,$rest);
12071: # ------------------------------------------ user.preferences, user.environment
12072: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
12073: if (($uname eq $env{'user.name'}) &&
12074: ($udom eq $env{'user.domain'})) {
12075: return $env{join('.',('environment',$qualifierrest))};
12076: } else {
12077: my %returnhash;
12078: if (!$publicuser) {
12079: %returnhash=&userenvironment($udom,$uname,
12080: $qualifierrest);
12081: }
12082: return $returnhash{$qualifierrest};
12083: }
12084: # ----------------------------------------------------------------- user.course
12085: } elsif ($space eq 'course') {
12086: # FIXME - not supporting calls for a specific user
12087: return $env{join('.',('request.course',$qualifier))};
12088: # ------------------------------------------------------------------- user.role
12089: } elsif ($space eq 'role') {
12090: # FIXME - not supporting calls for a specific user
12091: my ($role,$where)=split(/\./,$env{'request.role'});
12092: if ($qualifier eq 'value') {
12093: return $role;
12094: } elsif ($qualifier eq 'extent') {
12095: return $where;
12096: }
12097: # ----------------------------------------------------------------- user.domain
12098: } elsif ($space eq 'domain') {
12099: return $udom;
12100: # ------------------------------------------------------------------- user.name
12101: } elsif ($space eq 'name') {
12102: return $uname;
12103: # ---------------------------------------------------- Any other user namespace
12104: } else {
12105: my %reply;
12106: if (!$publicuser) {
12107: %reply=&get($space,[$qualifierrest],$udom,$uname);
12108: }
12109: return $reply{$qualifierrest};
12110: }
12111: } elsif ($realm eq 'query') {
12112: # ---------------------------------------------- pull stuff out of query string
12113: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
12114: [$spacequalifierrest]);
12115: return $env{'form.'.$spacequalifierrest};
12116: } elsif ($realm eq 'request') {
12117: # ------------------------------------------------------------- request.browser
12118: if ($space eq 'browser') {
12119: return $env{'browser.'.$qualifier};
12120: # ------------------------------------------------------------ request.filename
12121: } else {
12122: return $env{'request.'.$spacequalifierrest};
12123: }
12124: } elsif ($realm eq 'course') {
12125: # ---------------------------------------------------------- course.description
12126: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
12127: } elsif ($realm eq 'resource') {
12128:
12129: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
12130: if (!$symbparm) { $symbparm=&symbread(); }
12131: }
12132:
12133: if ($qualifier eq '') {
12134: if ($space eq 'title') {
12135: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
12136: return &gettitle($symbparm);
12137: }
12138:
12139: if ($space eq 'map') {
12140: my ($map) = &decode_symb($symbparm);
12141: return &symbread($map);
12142: }
12143: if ($space eq 'maptitle') {
12144: my ($map) = &decode_symb($symbparm);
12145: return &gettitle($map);
12146: }
12147: if ($space eq 'filename') {
12148: if ($symbparm) {
12149: return &clutter((&decode_symb($symbparm))[2]);
12150: }
12151: return &hreflocation('',$env{'request.filename'});
12152: }
12153:
12154: if ((defined($courseid)) && ($courseid eq $env{'request.course.id'}) && $symbparm) {
12155: if ($space eq 'visibleparts') {
12156: my $navmap = Apache::lonnavmaps::navmap->new();
12157: my $item;
12158: if (ref($navmap)) {
12159: my $res = $navmap->getBySymb($symbparm);
12160: my $parts = $res->parts();
12161: if (ref($parts) eq 'ARRAY') {
12162: $item = join(',',@{$parts});
12163: }
12164: undef($navmap);
12165: }
12166: return $item;
12167: }
12168: }
12169: }
12170:
12171: my ($section, $group, @groups, @recurseup, $recursed);
12172: my ($courselevelm,$courseleveli,$courselevel,$mapp);
12173: if (($courseid eq '') && ($cid)) {
12174: $courseid = $cid;
12175: }
12176: if (($symbparm && $courseid) &&
12177: (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid))) {
12178:
12179: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
12180:
12181: # ----------------------------------------------------- Cascading lookup scheme
12182: my $symbp=$symbparm;
12183: $mapp=&deversion((&decode_symb($symbp))[0]);
12184: my $symbparm=$symbp.'.'.$spacequalifierrest;
12185: my $recurseparm=$mapp.'___(rec).'.$spacequalifierrest;
12186: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
12187: if (($env{'user.name'} eq $uname) &&
12188: ($env{'user.domain'} eq $udom)) {
12189: $section=$env{'request.course.sec'};
12190: @groups = split(/:/,$env{'request.course.groups'});
12191: @groups=&sort_course_groups($courseid,@groups);
12192: } else {
12193: if (! defined($usection)) {
12194: $section=&getsection($udom,$uname,$courseid);
12195: } else {
12196: $section = $usection;
12197: }
12198: @groups = &get_users_groups($udom,$uname,$courseid);
12199: }
12200:
12201: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
12202: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
12203: my $secleveli=$courseid.'.['.$section.'].'.$recurseparm;
12204: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
12205:
12206: $courselevel=$courseid.'.'.$spacequalifierrest;
12207: my $courselevelr=$courseid.'.'.$symbparm;
12208: $courseleveli=$courseid.'.'.$recurseparm;
12209: $courselevelm=$courseid.'.'.$mapparm;
12210:
12211: # ----------------------------------------------------------- first, check user
12212:
12213: my $userreply=&resdata($uname,$udom,'user',$mapp,\$recursed,
12214: \@recurseup,$courseid,'.',$spacequalifierrest,
12215: ([$courselevelr,'resource'],
12216: [$courselevelm,'map' ],
12217: [$courseleveli,'map' ],
12218: [$courselevel, 'course' ]));
12219: if (defined($userreply)) { return &get_reply($userreply); }
12220:
12221: # ------------------------------------------------ second, check some of course
12222: my $coursereply;
12223: if (@groups > 0) {
12224: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
12225: $recurseparm,$mapparm,$spacequalifierrest,
12226: $mapp,\$recursed,\@recurseup);
12227: if (defined($coursereply)) { return &get_reply($coursereply); }
12228: }
12229:
12230: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
12231: $env{'course.'.$courseid.'.domain'},
12232: 'course',$mapp,\$recursed,\@recurseup,
12233: $courseid,'.['.$section.'].',$spacequalifierrest,
12234: ([$seclevelr, 'resource'],
12235: [$seclevelm, 'map' ],
12236: [$secleveli, 'map' ],
12237: [$seclevel, 'course' ],
12238: [$courselevelr,'resource']));
12239: if (defined($coursereply)) { return &get_reply($coursereply); }
12240:
12241: # ------------------------------------------------------ third, check map parms
12242: my %parmhash=();
12243: my $thisparm='';
12244: if (tie(%parmhash,'GDBM_File',
12245: $env{'request.course.fn'}.'_parms.db',
12246: &GDBM_READER(),0640)) {
12247: $thisparm=$parmhash{$symbparm};
12248: untie(%parmhash);
12249: }
12250: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
12251: }
12252: # ------------------------------------------ fourth, look in resource metadata
12253:
12254: my $what = $spacequalifierrest;
12255: $what=~s/\./\_/;
12256: my $filename;
12257: if (!$symbparm) { $symbparm=&symbread(); }
12258: if ($symbparm) {
12259: $filename=(&decode_symb($symbparm))[2];
12260: } else {
12261: $filename=$env{'request.filename'};
12262: }
12263: my $toolsymb;
12264: if (($filename =~ /ext\.tool$/) && ($what ne '0_gradable')) {
12265: $toolsymb = $symbparm;
12266: }
12267: my $metadata=&metadata($filename,$what,$toolsymb);
12268: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
12269: $metadata=&metadata($filename,'parameter_'.$what,$toolsymb);
12270: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
12271:
12272: # ----------------------------------------------- fifth, look in rest of course
12273: if ($symbparm && defined($courseid) &&
12274: $courseid eq $env{'request.course.id'}) {
12275: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
12276: $env{'course.'.$courseid.'.domain'},
12277: 'course',$mapp,\$recursed,\@recurseup,
12278: $courseid,'.',$spacequalifierrest,
12279: ([$courselevelm,'map' ],
12280: [$courseleveli,'map' ],
12281: [$courselevel, 'course']));
12282: if (defined($coursereply)) { return &get_reply($coursereply); }
12283: }
12284: # ------------------------------------------------------------------ Cascade up
12285: unless ($space eq '0') {
12286: my @parts=split(/_/,$space);
12287: my $id=pop(@parts);
12288: my $part=join('_',@parts);
12289: if ($part eq '') { $part='0'; }
12290: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
12291: $symbparm,$udom,$uname,$section,1);
12292: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
12293: }
12294: if ($recurse) { return undef; }
12295: my $pack_def=&packages_tab_default($filename,$varname,$toolsymb);
12296: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
12297: # ---------------------------------------------------- Any other user namespace
12298: } elsif ($realm eq 'environment') {
12299: # ----------------------------------------------------------------- environment
12300: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
12301: return $env{'environment.'.$spacequalifierrest};
12302: } else {
12303: if ($uname eq 'anonymous' && $udom eq '') {
12304: return '';
12305: }
12306: my %returnhash=&userenvironment($udom,$uname,
12307: $spacequalifierrest);
12308: return $returnhash{$spacequalifierrest};
12309: }
12310: } elsif ($realm eq 'system') {
12311: # ----------------------------------------------------------------- system.time
12312: if ($space eq 'time') {
12313: return time;
12314: }
12315: } elsif ($realm eq 'server') {
12316: # ----------------------------------------------------------------- system.time
12317: if ($space eq 'name') {
12318: return $ENV{'SERVER_NAME'};
12319: }
12320: } elsif ($realm eq 'client') {
12321: if ($space eq 'remote_addr') {
12322: return $ENV{'REMOTE_ADDR'};
12323: }
12324: }
12325: return '';
12326: }
12327:
12328: sub get_reply {
12329: my ($reply_value) = @_;
12330: if (ref($reply_value) eq 'ARRAY') {
12331: if (wantarray) {
12332: return @$reply_value;
12333: }
12334: return $reply_value->[0];
12335: } else {
12336: return $reply_value;
12337: }
12338: }
12339:
12340: sub check_group_parms {
12341: my ($courseid,$groups,$symbparm,$recurseparm,$mapparm,$what,$mapp,
12342: $recursed,$recurseupref) = @_;
12343: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$recurseparm,'map'],
12344: [$what,'course']);
12345: my $coursereply;
12346: foreach my $group (@{$groups}) {
12347: my @groupitems = ();
12348: foreach my $level (@levels) {
12349: my $item = $courseid.'.['.$group.'].'.$level->[0];
12350: push(@groupitems,[$item,$level->[1]]);
12351: }
12352: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
12353: $env{'course.'.$courseid.'.domain'},
12354: 'course',$mapp,$recursed,$recurseupref,
12355: $courseid,'.['.$group.'].',$what,
12356: @groupitems);
12357: last if (defined($coursereply));
12358: }
12359: return $coursereply;
12360: }
12361:
12362: sub get_map_hierarchy {
12363: my ($mapname,$courseid) = @_;
12364: my @recurseup = ();
12365: if ($mapname) {
12366: if (($cachedmapkey eq $courseid) &&
12367: (abs($cachedmaptime-time)<5)) {
12368: if (ref($cachedmaps{$mapname}) eq 'ARRAY') {
12369: return @{$cachedmaps{$mapname}};
12370: }
12371: }
12372: my $navmap = Apache::lonnavmaps::navmap->new();
12373: if (ref($navmap)) {
12374: @recurseup = $navmap->recurseup_maps($mapname);
12375: undef($navmap);
12376: $cachedmaps{$mapname} = \@recurseup;
12377: $cachedmaptime=time;
12378: $cachedmapkey=$courseid;
12379: }
12380: }
12381: return @recurseup;
12382: }
12383:
12384: }
12385:
12386: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
12387: my ($courseid,@groups) = @_;
12388: @groups = sort(@groups);
12389: return @groups;
12390: }
12391:
12392: sub packages_tab_default {
12393: my ($uri,$varname,$toolsymb)=@_;
12394: my (undef,$part,$name)=split(/\./,$varname);
12395:
12396: my (@extension,@specifics,$do_default);
12397: foreach my $package (split(/,/,&metadata($uri,'packages',$toolsymb))) {
12398: my ($pack_type,$pack_part)=split(/_/,$package,2);
12399: if ($pack_type eq 'default') {
12400: $do_default=1;
12401: } elsif ($pack_type eq 'extension') {
12402: push(@extension,[$package,$pack_type,$pack_part]);
12403: } elsif ($pack_part eq $part || $pack_type eq 'part') {
12404: # only look at packages defaults for packages that this id is
12405: push(@specifics,[$package,$pack_type,$pack_part]);
12406: }
12407: }
12408: # first look for a package that matches the requested part id
12409: foreach my $package (@specifics) {
12410: my (undef,$pack_type,$pack_part)=@{$package};
12411: next if ($pack_part ne $part);
12412: if (defined($packagetab{"$pack_type&$name&default"})) {
12413: return $packagetab{"$pack_type&$name&default"};
12414: }
12415: }
12416: # look for any possible matching non extension_ package
12417: foreach my $package (@specifics) {
12418: my (undef,$pack_type,$pack_part)=@{$package};
12419: if (defined($packagetab{"$pack_type&$name&default"})) {
12420: return $packagetab{"$pack_type&$name&default"};
12421: }
12422: if ($pack_type eq 'part') { $pack_part='0'; }
12423: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
12424: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
12425: }
12426: }
12427: # look for any posible extension_ match
12428: foreach my $package (@extension) {
12429: my ($package,$pack_type)=@{$package};
12430: if (defined($packagetab{"$pack_type&$name&default"})) {
12431: return $packagetab{"$pack_type&$name&default"};
12432: }
12433: if (defined($packagetab{$package."&$name&default"})) {
12434: return $packagetab{$package."&$name&default"};
12435: }
12436: }
12437: # look for a global default setting
12438: if ($do_default && defined($packagetab{"default&$name&default"})) {
12439: return $packagetab{"default&$name&default"};
12440: }
12441: return undef;
12442: }
12443:
12444: sub add_prefix_and_part {
12445: my ($prefix,$part)=@_;
12446: my $keyroot;
12447: if (defined($prefix) && $prefix !~ /^__/) {
12448: # prefix that has a part already
12449: $keyroot=$prefix;
12450: } elsif (defined($prefix)) {
12451: # prefix that is missing a part
12452: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
12453: } else {
12454: # no prefix at all
12455: if (defined($part)) { $keyroot='_'.$part; }
12456: }
12457: return $keyroot;
12458: }
12459:
12460: # ---------------------------------------------------------------- Get metadata
12461:
12462: my %metaentry;
12463: my %importedpartids;
12464: my %importedrespids;
12465: sub metadata {
12466: my ($uri,$what,$toolsymb,$liburi,$prefix,$depthcount)=@_;
12467: $uri=&declutter($uri);
12468: # if it is a non metadata possible uri return quickly
12469: if (($uri eq '') ||
12470: (($uri =~ m|^/*adm/|) &&
12471: ($uri !~ m|^adm/includes|) && ($uri !~ m{/(smppg|bulletinboard|ext\.tool)$})) ||
12472: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
12473: return undef;
12474: }
12475: if (($uri =~ /^priv/ || $uri=~m{^home/httpd/html/priv})
12476: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
12477: return undef;
12478: }
12479: my $filename=$uri;
12480: $uri=~s/\.meta$//;
12481: #
12482: # Is the metadata already cached?
12483: # Look at timestamp of caching
12484: # Everything is cached by the main uri, libraries are never directly cached
12485: #
12486: if (!defined($liburi)) {
12487: my ($result,$cached)=&is_cached_new('meta',$uri);
12488: if (defined($cached)) { return $result->{':'.$what}; }
12489: }
12490:
12491: #
12492: # If the uri is for an external tool the file from
12493: # which metadata should be retrieved depends on whether
12494: # the tool had been configured to be gradable (set in the Course
12495: # Editor or Resource Editor).
12496: #
12497: # If a valid symb has been included as the third arg in the call
12498: # to &metadata() that can be used to retrieve the value of
12499: # parameter_0_gradable set for the resource, and included in the
12500: # uploaded map containing the tool. The value is retrieved via
12501: # &EXT(), if a valid symb is available. Otherwise the value of
12502: # gradable in the exttool_$marker.db file for the tool instance
12503: # is retrieved via &get().
12504: #
12505: # When lonuserstate::traceroute() calls lonnet::EXT() for
12506: # hiddenresource and encrypturl (during course initialization)
12507: # the map-level parameter for resource.0.gradable included in the
12508: # uploaded map containing the tool will not yet have been stored
12509: # in the user_course_parms.db file for the user's session, so in
12510: # this case fall back to retrieving gradable status from the
12511: # exttool_$marker.db file.
12512: #
12513: # In order to avoid an infinite loop, &metadata() will return
12514: # before a call to &EXT(), if the uri is for an external tool
12515: # and the $what for which metadata is being requested is
12516: # parameter_0_gradable or 0_gradable.
12517: #
12518:
12519: if ($uri =~ /ext\.tool$/) {
12520: if (($what eq 'parameter_0_gradable') || ($what eq '0_gradable')) {
12521: return;
12522: } else {
12523: my ($checked,$use_passback);
12524: if ($toolsymb ne '') {
12525: (undef,undef,my $tooluri) = &decode_symb($toolsymb);
12526: if (($tooluri eq $uri) && (&EXT('resource.0.gradable',$toolsymb))) {
12527: $checked = 1;
12528: if (&EXT('resource.0.gradable',$toolsymb) =~ /^yes$/i) {
12529: $use_passback = 1;
12530: }
12531: }
12532: }
12533: unless ($checked) {
12534: my ($ignore,$cdom,$cnum,$marker) = split(m{/},$uri);
12535: $marker=~s/\D//g;
12536: if ($marker) {
12537: my %toolsettings=&get('exttool_'.$marker,['gradable'],$cdom,$cnum);
12538: $use_passback = $toolsettings{'gradable'};
12539: }
12540: }
12541: if ($use_passback) {
12542: $filename = '/home/httpd/html/res/lib/templates/LTIpassback.tool';
12543: } else {
12544: $filename = '/home/httpd/html/res/lib/templates/LTIstandard.tool';
12545: }
12546: }
12547: }
12548:
12549: {
12550: # Imported parts would go here
12551: my @origfiletagids=();
12552: my $importedparts=0;
12553:
12554: # Imported responseids would go here
12555: my $importedresponses=0;
12556: #
12557: # Is this a recursive call for a library?
12558: #
12559: # if (! exists($metacache{$uri})) {
12560: # $metacache{$uri}={};
12561: # }
12562: my $cachetime = 60*60;
12563: if ($liburi) {
12564: $liburi=&declutter($liburi);
12565: $filename=$liburi;
12566: } else {
12567: &devalidate_cache_new('meta',$uri);
12568: undef(%metaentry);
12569: }
12570: my %metathesekeys=();
12571: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
12572: my $metastring;
12573: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
12574: my $which = &hreflocation('','/'.($liburi || $uri));
12575: $metastring =
12576: &Apache::lonnet::ssi_body($which,
12577: ('grade_target' => 'meta'));
12578: $cachetime = 1; # only want this cached in the child not long term
12579: } elsif (($uri !~ m -^(editupload)/-) &&
12580: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
12581: my $file=&filelocation('',&clutter($filename));
12582: #push(@{$metaentry{$uri.'.file'}},$file);
12583: $metastring=&getfile($file);
12584: }
12585: my $parser=HTML::LCParser->new(\$metastring);
12586: my $token;
12587: undef %metathesekeys;
12588: while ($token=$parser->get_token) {
12589: if ($token->[0] eq 'S') {
12590: if (defined($token->[2]->{'package'})) {
12591: #
12592: # This is a package - get package info
12593: #
12594: my $package=$token->[2]->{'package'};
12595: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
12596: if (defined($token->[2]->{'id'})) {
12597: $keyroot.='_'.$token->[2]->{'id'};
12598: }
12599: if ($metaentry{':packages'}) {
12600: $metaentry{':packages'}.=','.$package.$keyroot;
12601: } else {
12602: $metaentry{':packages'}=$package.$keyroot;
12603: }
12604: foreach my $pack_entry (keys(%packagetab)) {
12605: my $part=$keyroot;
12606: $part=~s/^\_//;
12607: if ($pack_entry=~/^\Q$package\E\&/ ||
12608: $pack_entry=~/^\Q$package\E_0\&/) {
12609: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
12610: # ignore package.tab specified default values
12611: # here &package_tab_default() will fetch those
12612: if ($subp eq 'default') { next; }
12613: my $value=$packagetab{$pack_entry};
12614: my $unikey;
12615: if ($pack =~ /_0$/) {
12616: $unikey='parameter_0_'.$name;
12617: $part=0;
12618: } else {
12619: $unikey='parameter'.$keyroot.'_'.$name;
12620: }
12621: if ($subp eq 'display') {
12622: $value.=' [Part: '.$part.']';
12623: }
12624: $metaentry{':'.$unikey.'.part'}=$part;
12625: $metathesekeys{$unikey}=1;
12626: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
12627: $metaentry{':'.$unikey.'.'.$subp}=$value;
12628: }
12629: if (defined($metaentry{':'.$unikey.'.default'})) {
12630: $metaentry{':'.$unikey}=
12631: $metaentry{':'.$unikey.'.default'};
12632: }
12633: }
12634: }
12635: } else {
12636: #
12637: # This is not a package - some other kind of start tag
12638: #
12639: my $entry=$token->[1];
12640: my $unikey='';
12641:
12642: if ($entry eq 'import') {
12643: #
12644: # Importing a library here
12645: #
12646: my $location=$parser->get_text('/import');
12647: my $dir=$filename;
12648: $dir=~s|[^/]*$||;
12649: $location=&filelocation($dir,$location);
12650:
12651: my $importid=$token->[2]->{'id'};
12652: my $importmode=$token->[2]->{'importmode'};
12653: #
12654: # Check metadata for imported file to
12655: # see if it contained response items
12656: #
12657: my ($origfile,@libfilekeys);
12658: my %currmetaentry = %metaentry;
12659: @libfilekeys = split(/,/,&metadata($location,'keys',undef,undef,undef,
12660: $depthcount+1));
12661: if (grep(/^responseorder$/,@libfilekeys)) {
12662: my $libresponseorder = &metadata($location,'responseorder',undef,undef,
12663: undef,$depthcount+1);
12664: if ($libresponseorder ne '') {
12665: if ($#origfiletagids<0) {
12666: undef(%importedrespids);
12667: undef(%importedpartids);
12668: }
12669: my @respids = split(/\s*,\s*/,$libresponseorder);
12670: if (@respids) {
12671: $importedrespids{$importid} = join(',',map { $importid.'_'.$_ } @respids);
12672: }
12673: if ($importedrespids{$importid} ne '') {
12674: $importedresponses = 1;
12675: # We need to get the original file and the imported file to get the response order correct
12676: # Load and inspect original file
12677: if ($#origfiletagids<0) {
12678: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
12679: $origfile=&getfile($origfilelocation);
12680: @origfiletagids=($origfile=~/<((?:\w+)response|import|part)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12681: }
12682: }
12683: }
12684: }
12685: # Do not overwrite contents of %metaentry hash for resource itself with
12686: # hash populated for imported library file
12687: %metaentry = %currmetaentry;
12688: undef(%currmetaentry);
12689: if ($importmode eq 'part') {
12690: # Import as part(s)
12691: $importedparts=1;
12692: # We need to get the original file and the imported file to get the part order correct
12693: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
12694: # Load and inspect original file if we didn't do that already
12695: if ($#origfiletagids<0) {
12696: undef(%importedrespids);
12697: undef(%importedpartids);
12698: if ($origfile eq '') {
12699: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
12700: $origfile=&getfile($origfilelocation);
12701: @origfiletagids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12702: }
12703: }
12704: my @impfilepartids;
12705: # If <partorder> tag is included in metadata for the imported file
12706: # get the parts in the imported file from that.
12707: if (grep(/^partorder$/,@libfilekeys)) {
12708: %currmetaentry = %metaentry;
12709: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
12710: $depthcount+1);
12711: %metaentry = %currmetaentry;
12712: undef(%currmetaentry);
12713: if ($libpartorder ne '') {
12714: @impfilepartids=split(/\s*,\s*/,$libpartorder);
12715: }
12716: } else {
12717: # If no <partorder> tag available, load and inspect imported file
12718: my $impfile=&getfile($location);
12719: @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
12720: }
12721: if ($#impfilepartids>=0) {
12722: # This problem had parts
12723: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
12724: } else {
12725: # Importing by turning a single problem into a problem part
12726: # It gets the import-tags ID as part-ID
12727: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
12728: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
12729: }
12730: } else {
12731: # Import as problem or as normal import
12732: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
12733: unless ($importmode eq 'problem') {
12734: # Normal import
12735: if (defined($token->[2]->{'id'})) {
12736: $unikey.='_'.$token->[2]->{'id'};
12737: }
12738: }
12739: # Check metadata for imported file to
12740: # see if it contained parts
12741: if (grep(/^partorder$/,@libfilekeys)) {
12742: %currmetaentry = %metaentry;
12743: my $libpartorder = &metadata($location,'partorder',undef,undef,undef,
12744: $depthcount+1);
12745: %metaentry = %currmetaentry;
12746: undef(%currmetaentry);
12747: if ($libpartorder ne '') {
12748: $importedparts = 1;
12749: $importedpartids{$token->[2]->{'id'}}=$libpartorder;
12750: }
12751: }
12752: }
12753: if ($depthcount<20) {
12754: my $metadata =
12755: &metadata($uri,'keys',$toolsymb,$location,$unikey,
12756: $depthcount+1);
12757: foreach my $meta (split(',',$metadata)) {
12758: $metaentry{':'.$meta}=$metaentry{':'.$meta};
12759: $metathesekeys{$meta}=1;
12760: }
12761: }
12762: } else {
12763: #
12764: # Not importing, some other kind of non-package, non-library start tag
12765: #
12766: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
12767: if (defined($token->[2]->{'id'})) {
12768: $unikey.='_'.$token->[2]->{'id'};
12769: }
12770: if (defined($token->[2]->{'name'})) {
12771: $unikey.='_'.$token->[2]->{'name'};
12772: }
12773: $metathesekeys{$unikey}=1;
12774: foreach my $param (@{$token->[3]}) {
12775: $metaentry{':'.$unikey.'.'.$param} =
12776: $token->[2]->{$param};
12777: }
12778: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
12779: my $default=$metaentry{':'.$unikey.'.default'};
12780: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
12781: # only ws inside the tag, and not in default, so use default
12782: # as value
12783: $metaentry{':'.$unikey}=$default;
12784: } elsif ( $internaltext =~ /\S/ ) {
12785: # something interesting inside the tag
12786: $metaentry{':'.$unikey}=$internaltext;
12787: } else {
12788: # no interesting values, don't set a default
12789: }
12790: # end of not-a-package not-a-library import
12791: }
12792: # end of not-a-package start tag
12793: }
12794: # the next is the end of "start tag"
12795: }
12796: }
12797: my ($extension) = ($uri =~ /\.(\w+)$/);
12798: $extension = lc($extension);
12799: if ($extension eq 'htm') { $extension='html'; }
12800:
12801: foreach my $key (keys(%packagetab)) {
12802: #no specific packages #how's our extension
12803: if ($key!~/^extension_\Q$extension\E&/) { next; }
12804: &metadata_create_package_def($uri,$key,'extension_'.$extension,
12805: \%metathesekeys);
12806: }
12807:
12808: if (!exists($metaentry{':packages'})
12809: || $packagetab{"import_defaults&extension_$extension"}) {
12810: foreach my $key (keys(%packagetab)) {
12811: #no specific packages well let's get default then
12812: if ($key!~/^default&/) { next; }
12813: &metadata_create_package_def($uri,$key,'default',
12814: \%metathesekeys);
12815: }
12816: }
12817: # are there custom rights to evaluate
12818: if ($metaentry{':copyright'} eq 'custom') {
12819:
12820: #
12821: # Importing a rights file here
12822: #
12823: unless ($depthcount) {
12824: my $location=$metaentry{':customdistributionfile'};
12825: my $dir=$filename;
12826: $dir=~s|[^/]*$||;
12827: $location=&filelocation($dir,$location);
12828: my $rights_metadata =
12829: &metadata($uri,'keys',$toolsymb,$location,'_rights',
12830: $depthcount+1);
12831: foreach my $rights (split(',',$rights_metadata)) {
12832: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
12833: $metathesekeys{$rights}=1;
12834: }
12835: }
12836: }
12837: # uniqifiy package listing
12838: my %seen;
12839: my @uniq_packages =
12840: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
12841: $metaentry{':packages'} = join(',',@uniq_packages);
12842:
12843: if (($importedresponses) || ($importedparts)) {
12844: if ($importedparts) {
12845: # We had imported parts and need to rebuild partorder
12846: $metaentry{':partorder'}='';
12847: $metathesekeys{'partorder'}=1;
12848: }
12849: if ($importedresponses) {
12850: # We had imported responses and need to rebuil responseorder
12851: $metaentry{':responseorder'}='';
12852: $metathesekeys{'responseorder'}=1;
12853: }
12854: for (my $index=0;$index<$#origfiletagids;$index+=2) {
12855: my $origid = $origfiletagids[$index+1];
12856: if ($origfiletagids[$index] eq 'part') {
12857: # Original part, part of the problem
12858: if ($importedparts) {
12859: $metaentry{':partorder'}.=','.$origid;
12860: }
12861: } elsif ($origfiletagids[$index] eq 'import') {
12862: if ($importedparts) {
12863: # We have imported parts at this position
12864: if ($importedpartids{$origid} ne '') {
12865: $metaentry{':partorder'}.=','.$importedpartids{$origid};
12866: }
12867: }
12868: if ($importedresponses) {
12869: # We have imported responses at this position
12870: if ($importedrespids{$origid} ne '') {
12871: $metaentry{':responseorder'}.=','.$importedrespids{$origid};
12872: }
12873: }
12874: } else {
12875: # Original response item, part of the problem
12876: if ($importedresponses) {
12877: $metaentry{':responseorder'}.=','.$origid;
12878: }
12879: }
12880: }
12881: if ($importedparts) {
12882: $metaentry{':partorder'}=~s/^\,//;
12883: }
12884: if ($importedresponses) {
12885: $metaentry{':responseorder'}=~s/^\,//;
12886: }
12887: }
12888: $metaentry{':keys'} = join(',',keys(%metathesekeys));
12889: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
12890: $metaentry{':allpossiblekeys'}=join(',',keys(%metathesekeys));
12891: unless ($liburi) {
12892: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
12893: }
12894: # this is the end of "was not already recently cached
12895: }
12896: return $metaentry{':'.$what};
12897: }
12898:
12899: sub metadata_create_package_def {
12900: my ($uri,$key,$package,$metathesekeys)=@_;
12901: my ($pack,$name,$subp)=split(/\&/,$key);
12902: if ($subp eq 'default') { next; }
12903:
12904: if (defined($metaentry{':packages'})) {
12905: $metaentry{':packages'}.=','.$package;
12906: } else {
12907: $metaentry{':packages'}=$package;
12908: }
12909: my $value=$packagetab{$key};
12910: my $unikey;
12911: $unikey='parameter_0_'.$name;
12912: $metaentry{':'.$unikey.'.part'}=0;
12913: $$metathesekeys{$unikey}=1;
12914: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
12915: $metaentry{':'.$unikey.'.'.$subp}=$value;
12916: }
12917: if (defined($metaentry{':'.$unikey.'.default'})) {
12918: $metaentry{':'.$unikey}=
12919: $metaentry{':'.$unikey.'.default'};
12920: }
12921: }
12922:
12923: sub metadata_generate_part0 {
12924: my ($metadata,$metacache,$uri) = @_;
12925: my %allnames;
12926: foreach my $metakey (keys(%$metadata)) {
12927: if ($metakey=~/^parameter\_(.*)/) {
12928: my $part=$$metacache{':'.$metakey.'.part'};
12929: my $name=$$metacache{':'.$metakey.'.name'};
12930: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
12931: $allnames{$name}=$part;
12932: }
12933: }
12934: }
12935: foreach my $name (keys(%allnames)) {
12936: $$metadata{"parameter_0_$name"}=1;
12937: my $key=":parameter_0_$name";
12938: $$metacache{"$key.part"}='0';
12939: $$metacache{"$key.name"}=$name;
12940: $$metacache{"$key.type"}=$$metacache{':parameter_'.
12941: $allnames{$name}.'_'.$name.
12942: '.type'};
12943: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
12944: '.display'};
12945: my $expr='[Part: '.$allnames{$name}.']';
12946: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
12947: $$metacache{"$key.display"}=$olddis;
12948: }
12949: }
12950:
12951: # ------------------------------------------------------ Devalidate title cache
12952:
12953: sub devalidate_title_cache {
12954: my ($url)=@_;
12955: if (!$env{'request.course.id'}) { return; }
12956: my $symb=&symbread($url);
12957: if (!$symb) { return; }
12958: my $key=$env{'request.course.id'}."\0".$symb;
12959: &devalidate_cache_new('title',$key);
12960: }
12961:
12962: # ------------------------------------------------- Get the title of a course
12963:
12964: sub current_course_title {
12965: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
12966: }
12967: # ------------------------------------------------- Get the title of a resource
12968:
12969: sub gettitle {
12970: my $urlsymb=shift;
12971: my $symb=&symbread($urlsymb);
12972: if ($symb) {
12973: my $key=$env{'request.course.id'}."\0".$symb;
12974: my ($result,$cached)=&is_cached_new('title',$key);
12975: if (defined($cached)) {
12976: return $result;
12977: }
12978: my ($map,$resid,$url)=&decode_symb($symb);
12979: my $title='';
12980: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
12981: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
12982: } else {
12983: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
12984: &GDBM_READER(),0640)) {
12985: my $mapid=$bighash{'map_pc_'.&clutter($map)};
12986: $title=$bighash{'title_'.$mapid.'.'.$resid};
12987: untie(%bighash);
12988: }
12989: }
12990: $title=~s/\&colon\;/\:/gs;
12991: if ($title) {
12992: # Remember both $symb and $title for dynamic metadata
12993: $accesshash{$symb.'___crstitle'}=$title;
12994: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
12995: # Cache this title and then return it
12996: return &do_cache_new('title',$key,$title,600);
12997: }
12998: $urlsymb=$url;
12999: }
13000: my $title=&metadata($urlsymb,'title');
13001: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
13002: return $title;
13003: }
13004:
13005: sub get_slot {
13006: my ($which,$cnum,$cdom)=@_;
13007: if (!$cnum || !$cdom) {
13008: (undef,my $courseid)=&whichuser();
13009: $cdom=$env{'course.'.$courseid.'.domain'};
13010: $cnum=$env{'course.'.$courseid.'.num'};
13011: }
13012: my $key=join("\0",'slots',$cdom,$cnum,$which);
13013: my %slotinfo;
13014: if (exists($remembered{$key})) {
13015: $slotinfo{$which} = $remembered{$key};
13016: } else {
13017: %slotinfo=&get('slots',[$which],$cdom,$cnum);
13018: &Apache::lonhomework::showhash(%slotinfo);
13019: my ($tmp)=keys(%slotinfo);
13020: if ($tmp=~/^error:/) { return (); }
13021: $remembered{$key} = $slotinfo{$which};
13022: }
13023: if (ref($slotinfo{$which}) eq 'HASH') {
13024: return %{$slotinfo{$which}};
13025: }
13026: return $slotinfo{$which};
13027: }
13028:
13029: sub get_reservable_slots {
13030: my ($cnum,$cdom,$uname,$udom) = @_;
13031: my $now = time;
13032: my $reservable_info;
13033: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
13034: if (exists($remembered{$key})) {
13035: $reservable_info = $remembered{$key};
13036: } else {
13037: my %resv;
13038: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
13039: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
13040: $reservable_info = \%resv;
13041: $remembered{$key} = $reservable_info;
13042: }
13043: return $reservable_info;
13044: }
13045:
13046: sub get_course_slots {
13047: my ($cnum,$cdom) = @_;
13048: my $hashid=$cnum.':'.$cdom;
13049: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
13050: if (defined($cached)) {
13051: if (ref($result) eq 'HASH') {
13052: return %{$result};
13053: }
13054: } else {
13055: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
13056: my ($tmp) = keys(%slots);
13057: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
13058: &do_cache_new('allslots',$hashid,\%slots,600);
13059: return %slots;
13060: }
13061: }
13062: return;
13063: }
13064:
13065: sub devalidate_slots_cache {
13066: my ($cnum,$cdom)=@_;
13067: my $hashid=$cnum.':'.$cdom;
13068: &devalidate_cache_new('allslots',$hashid);
13069: }
13070:
13071: sub get_coursechange {
13072: my ($cdom,$cnum) = @_;
13073: if ($cdom eq '' || $cnum eq '') {
13074: return unless ($env{'request.course.id'});
13075: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
13076: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
13077: }
13078: my $hashid=$cdom.'_'.$cnum;
13079: my ($change,$cached)=&is_cached_new('crschange',$hashid);
13080: if ((defined($cached)) && ($change ne '')) {
13081: return $change;
13082: } else {
13083: my %crshash;
13084: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
13085: if ($crshash{'internal.contentchange'} eq '') {
13086: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
13087: if ($change eq '') {
13088: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
13089: $change = $crshash{'internal.created'};
13090: }
13091: } else {
13092: $change = $crshash{'internal.contentchange'};
13093: }
13094: my $cachetime = 600;
13095: &do_cache_new('crschange',$hashid,$change,$cachetime);
13096: }
13097: return $change;
13098: }
13099:
13100: sub devalidate_coursechange_cache {
13101: my ($cnum,$cdom)=@_;
13102: my $hashid=$cnum.':'.$cdom;
13103: &devalidate_cache_new('crschange',$hashid);
13104: }
13105:
13106: # ------------------------------------------------- Update symbolic store links
13107:
13108: sub symblist {
13109: my ($mapname,%newhash)=@_;
13110: $mapname=&deversion(&declutter($mapname));
13111: my %hash;
13112: if (($env{'request.course.fn'}) && (%newhash)) {
13113: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
13114: &GDBM_WRCREAT(),0640)) {
13115: foreach my $url (keys(%newhash)) {
13116: next if ($url eq 'last_known'
13117: && $env{'form.no_update_last_known'});
13118: $hash{declutter($url)}=&encode_symb($mapname,
13119: $newhash{$url}->[1],
13120: $newhash{$url}->[0]);
13121: }
13122: if (untie(%hash)) {
13123: return 'ok';
13124: }
13125: }
13126: }
13127: return 'error';
13128: }
13129:
13130: # --------------------------------------------------------------- Verify a symb
13131:
13132: sub symbverify {
13133: my ($symb,$thisurl,$encstate)=@_;
13134: my $thisfn=$thisurl;
13135: $thisfn=&declutter($thisfn);
13136: # direct jump to resource in page or to a sequence - will construct own symbs
13137: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
13138: # check URL part
13139: my ($map,$resid,$url)=&decode_symb($symb);
13140:
13141: unless ($url eq $thisfn) { return 0; }
13142:
13143: $symb=&symbclean($symb);
13144: $thisurl=&deversion($thisurl);
13145: $thisfn=&deversion($thisfn);
13146:
13147: my %bighash;
13148: my $okay=0;
13149:
13150: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
13151: &GDBM_READER(),0640)) {
13152: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
13153: $thisurl =~ s/\?.+$//;
13154: if ($map =~ m{^uploaded/.+\.page$}) {
13155: $thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
13156: $thisurl =~ s{^\Qhttp://https://\E}{https://};
13157: }
13158: }
13159: my $ids;
13160: if ($map =~ m{^uploaded/.+\.page$}) {
13161: $ids=$bighash{'ids_'.&clutter_with_no_wrapper($thisurl)};
13162: } else {
13163: $ids=$bighash{'ids_'.&clutter($thisurl)};
13164: }
13165: unless ($ids) {
13166: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
13167: $ids=$bighash{$idkey};
13168: }
13169: if ($ids) {
13170: # ------------------------------------------------------------------- Has ID(s)
13171: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
13172: $symb =~ s/\?.+$//;
13173: }
13174: foreach my $id (split(/\,/,$ids)) {
13175: my ($mapid,$resid)=split(/\./,$id);
13176: if (
13177: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
13178: eq $symb) {
13179: if (ref($encstate)) {
13180: $$encstate = $bighash{'encrypted_'.$id};
13181: }
13182: if (($env{'request.role.adv'}) ||
13183: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
13184: ($thisurl eq '/adm/navmaps')) {
13185: $okay=1;
13186: last;
13187: }
13188: }
13189: }
13190: }
13191: untie(%bighash);
13192: }
13193: return $okay;
13194: }
13195:
13196: # --------------------------------------------------------------- Clean-up symb
13197:
13198: sub symbclean {
13199: my $symb=shift;
13200: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
13201: # remove version from map
13202: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
13203:
13204: # remove version from URL
13205: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
13206:
13207: # remove wrapper
13208:
13209: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
13210: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
13211: return $symb;
13212: }
13213:
13214: # ---------------------------------------------- Split symb to find map and url
13215:
13216: sub encode_symb {
13217: my ($map,$resid,$url)=@_;
13218: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
13219: }
13220:
13221: sub decode_symb {
13222: my $symb=shift;
13223: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
13224: my ($map,$resid,$url)=split(/___/,$symb);
13225: return (&fixversion($map),$resid,&fixversion($url));
13226: }
13227:
13228: sub fixversion {
13229: my $fn=shift;
13230: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
13231: my %bighash;
13232: my $uri=&clutter($fn);
13233: my $key=$env{'request.course.id'}.'_'.$uri;
13234: # is this cached?
13235: my ($result,$cached)=&is_cached_new('courseresversion',$key);
13236: if (defined($cached)) { return $result; }
13237: # unfortunately not cached, or expired
13238: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
13239: &GDBM_READER(),0640)) {
13240: if ($bighash{'version_'.$uri}) {
13241: my $version=$bighash{'version_'.$uri};
13242: unless (($version eq 'mostrecent') ||
13243: ($version==&getversion($uri))) {
13244: $uri=~s/\.(\w+)$/\.$version\.$1/;
13245: }
13246: }
13247: untie %bighash;
13248: }
13249: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
13250: }
13251:
13252: sub deversion {
13253: my $url=shift;
13254: $url=~s/\.\d+\.(\w+)$/\.$1/;
13255: return $url;
13256: }
13257:
13258: # ------------------------------------------------------ Return symb list entry
13259:
13260: sub symbread {
13261: my ($thisfn,$donotrecurse,$ignorecachednull,$checkforblock,$possibles)=@_;
13262: my $cache_str='request.symbread.cached.'.$thisfn;
13263: if (defined($env{$cache_str})) {
13264: if ($ignorecachednull) {
13265: return $env{$cache_str} unless ($env{$cache_str} eq '');
13266: } else {
13267: return $env{$cache_str};
13268: }
13269: }
13270: # no filename provided? try from environment
13271: unless ($thisfn) {
13272: if ($env{'request.symb'}) {
13273: return $env{$cache_str}=&symbclean($env{'request.symb'});
13274: }
13275: $thisfn=$env{'request.filename'};
13276: }
13277: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
13278: # is that filename actually a symb? Verify, clean, and return
13279: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
13280: if (&symbverify($thisfn,$1)) {
13281: return $env{$cache_str}=&symbclean($thisfn);
13282: }
13283: }
13284: $thisfn=declutter($thisfn);
13285: my %hash;
13286: my %bighash;
13287: my $syval='';
13288: if (($env{'request.course.fn'}) && ($thisfn)) {
13289: my $targetfn = $thisfn;
13290: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
13291: $targetfn = 'adm/wrapper/'.$thisfn;
13292: }
13293: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
13294: $targetfn=$1;
13295: }
13296: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
13297: &GDBM_READER(),0640)) {
13298: $syval=$hash{$targetfn};
13299: untie(%hash);
13300: }
13301: # ---------------------------------------------------------- There was an entry
13302: if ($syval) {
13303: #unless ($syval=~/\_\d+$/) {
13304: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
13305: #&appenv({'request.ambiguous' => $thisfn});
13306: #return $env{$cache_str}='';
13307: #}
13308: #$syval.=$1;
13309: #}
13310: } else {
13311: # ------------------------------------------------------- Was not in symb table
13312: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
13313: &GDBM_READER(),0640)) {
13314: # ---------------------------------------------- Get ID(s) for current resource
13315: my $ids=$bighash{'ids_'.&clutter($thisfn)};
13316: unless ($ids) {
13317: $ids=$bighash{'ids_/'.$thisfn};
13318: }
13319: unless ($ids) {
13320: # alias?
13321: $ids=$bighash{'mapalias_'.$thisfn};
13322: }
13323: if ($ids) {
13324: # ------------------------------------------------------------------- Has ID(s)
13325: my @possibilities=split(/\,/,$ids);
13326: if ($#possibilities==0) {
13327: # ----------------------------------------------- There is only one possibility
13328: my ($mapid,$resid)=split(/\./,$ids);
13329: $syval=&encode_symb($bighash{'map_id_'.$mapid},
13330: $resid,$thisfn);
13331: if (ref($possibles) eq 'HASH') {
13332: $possibles->{$syval} = 1;
13333: }
13334: if ($checkforblock) {
13335: my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids});
13336: if (@blockers) {
13337: $syval = '';
13338: return;
13339: }
13340: }
13341: } elsif ((!$donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
13342: # ------------------------------------------ There is more than one possibility
13343: my $realpossible=0;
13344: foreach my $id (@possibilities) {
13345: my $file=$bighash{'src_'.$id};
13346: my $canaccess;
13347: if (($donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
13348: $canaccess = 1;
13349: } else {
13350: $canaccess = &allowed('bre',$file);
13351: }
13352: if ($canaccess) {
13353: my ($mapid,$resid)=split(/\./,$id);
13354: if ($bighash{'map_type_'.$mapid} ne 'page') {
13355: my $poss_syval=&encode_symb($bighash{'map_id_'.$mapid},
13356: $resid,$thisfn);
13357: if (ref($possibles) eq 'HASH') {
13358: $possibles->{$syval} = 1;
13359: }
13360: if ($checkforblock) {
13361: my @blockers = &has_comm_blocking('bre',$poss_syval,$file);
13362: unless (@blockers > 0) {
13363: $syval = $poss_syval;
13364: $realpossible++;
13365: }
13366: } else {
13367: $syval = $poss_syval;
13368: $realpossible++;
13369: }
13370: }
13371: }
13372: }
13373: if ($realpossible!=1) { $syval=''; }
13374: } else {
13375: $syval='';
13376: }
13377: }
13378: untie(%bighash);
13379: }
13380: }
13381: if ($syval) {
13382: return $env{$cache_str}=$syval;
13383: }
13384: }
13385: &appenv({'request.ambiguous' => $thisfn});
13386: return $env{$cache_str}='';
13387: }
13388:
13389: # ---------------------------------------------------------- Return random seed
13390:
13391: sub numval {
13392: my $txt=shift;
13393: $txt=~tr/A-J/0-9/;
13394: $txt=~tr/a-j/0-9/;
13395: $txt=~tr/K-T/0-9/;
13396: $txt=~tr/k-t/0-9/;
13397: $txt=~tr/U-Z/0-5/;
13398: $txt=~tr/u-z/0-5/;
13399: $txt=~s/\D//g;
13400: if ($_64bit) { if ($txt > 2**32) { return -1; } }
13401: return int($txt);
13402: }
13403:
13404: sub numval2 {
13405: my $txt=shift;
13406: $txt=~tr/A-J/0-9/;
13407: $txt=~tr/a-j/0-9/;
13408: $txt=~tr/K-T/0-9/;
13409: $txt=~tr/k-t/0-9/;
13410: $txt=~tr/U-Z/0-5/;
13411: $txt=~tr/u-z/0-5/;
13412: $txt=~s/\D//g;
13413: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
13414: my $total;
13415: foreach my $val (@txts) { $total+=$val; }
13416: if ($_64bit) { if ($total > 2**32) { return -1; } }
13417: return int($total);
13418: }
13419:
13420: sub numval3 {
13421: use integer;
13422: my $txt=shift;
13423: $txt=~tr/A-J/0-9/;
13424: $txt=~tr/a-j/0-9/;
13425: $txt=~tr/K-T/0-9/;
13426: $txt=~tr/k-t/0-9/;
13427: $txt=~tr/U-Z/0-5/;
13428: $txt=~tr/u-z/0-5/;
13429: $txt=~s/\D//g;
13430: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
13431: my $total;
13432: foreach my $val (@txts) { $total+=$val; }
13433: if ($_64bit) { $total=(($total<<32)>>32); }
13434: return $total;
13435: }
13436:
13437: sub digest {
13438: my ($data)=@_;
13439: my $digest=&Digest::MD5::md5($data);
13440: my ($a,$b,$c,$d)=unpack("iiii",$digest);
13441: my ($e,$f);
13442: {
13443: use integer;
13444: $e=($a+$b);
13445: $f=($c+$d);
13446: if ($_64bit) {
13447: $e=(($e<<32)>>32);
13448: $f=(($f<<32)>>32);
13449: }
13450: }
13451: if (wantarray) {
13452: return ($e,$f);
13453: } else {
13454: my $g;
13455: {
13456: use integer;
13457: $g=($e+$f);
13458: if ($_64bit) {
13459: $g=(($g<<32)>>32);
13460: }
13461: }
13462: return $g;
13463: }
13464: }
13465:
13466: sub latest_rnd_algorithm_id {
13467: return '64bit5';
13468: }
13469:
13470: sub get_rand_alg {
13471: my ($courseid)=@_;
13472: if (!$courseid) { $courseid=(&whichuser())[1]; }
13473: if ($courseid) {
13474: return $env{"course.$courseid.rndseed"};
13475: }
13476: return &latest_rnd_algorithm_id();
13477: }
13478:
13479: sub validCODE {
13480: my ($CODE)=@_;
13481: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
13482: return 0;
13483: }
13484:
13485: sub getCODE {
13486: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
13487: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
13488: defined($Apache::lonhomework::parsing_a_task) ) &&
13489: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
13490: return $Apache::lonhomework::history{'resource.CODE'};
13491: }
13492: return undef;
13493: }
13494: #
13495: # Determines the random seed for a specific context:
13496: #
13497: # parameters:
13498: # symb - in course context the symb for the seed.
13499: # course_id - The course id of the form domain_coursenum.
13500: # domain - Domain for the user.
13501: # course - Course for the user.
13502: # cenv - environment of the course.
13503: #
13504: # NOTE:
13505: # All parameters are picked out of the environment if missing
13506: # or not defined.
13507: # If a symb cannot be determined the current time is used instead.
13508: #
13509: # For a given well defined symb, courside, domain, username,
13510: # and course environment, the seed is reproducible.
13511: #
13512: sub rndseed {
13513: my ($symb,$courseid,$domain,$username, $cenv)=@_;
13514: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
13515: if (!defined($symb)) {
13516: unless ($symb=$wsymb) { return time; }
13517: }
13518: if (!defined $courseid) {
13519: $courseid=$wcourseid;
13520: }
13521: if (!defined $domain) { $domain=$wdomain; }
13522: if (!defined $username) { $username=$wusername }
13523:
13524: my $which;
13525: if (defined($cenv->{'rndseed'})) {
13526: $which = $cenv->{'rndseed'};
13527: } else {
13528: $which =&get_rand_alg($courseid);
13529: }
13530: if (defined(&getCODE())) {
13531:
13532: if ($which eq '64bit5') {
13533: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
13534: } elsif ($which eq '64bit4') {
13535: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
13536: } else {
13537: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
13538: }
13539: } elsif ($which eq '64bit5') {
13540: return &rndseed_64bit5($symb,$courseid,$domain,$username);
13541: } elsif ($which eq '64bit4') {
13542: return &rndseed_64bit4($symb,$courseid,$domain,$username);
13543: } elsif ($which eq '64bit3') {
13544: return &rndseed_64bit3($symb,$courseid,$domain,$username);
13545: } elsif ($which eq '64bit2') {
13546: return &rndseed_64bit2($symb,$courseid,$domain,$username);
13547: } elsif ($which eq '64bit') {
13548: return &rndseed_64bit($symb,$courseid,$domain,$username);
13549: }
13550: return &rndseed_32bit($symb,$courseid,$domain,$username);
13551: }
13552:
13553: sub rndseed_32bit {
13554: my ($symb,$courseid,$domain,$username)=@_;
13555: {
13556: use integer;
13557: my $symbchck=unpack("%32C*",$symb) << 27;
13558: my $symbseed=numval($symb) << 22;
13559: my $namechck=unpack("%32C*",$username) << 17;
13560: my $nameseed=numval($username) << 12;
13561: my $domainseed=unpack("%32C*",$domain) << 7;
13562: my $courseseed=unpack("%32C*",$courseid);
13563: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
13564: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13565: #&logthis("rndseed :$num:$symb");
13566: if ($_64bit) { $num=(($num<<32)>>32); }
13567: return $num;
13568: }
13569: }
13570:
13571: sub rndseed_64bit {
13572: my ($symb,$courseid,$domain,$username)=@_;
13573: {
13574: use integer;
13575: my $symbchck=unpack("%32S*",$symb) << 21;
13576: my $symbseed=numval($symb) << 10;
13577: my $namechck=unpack("%32S*",$username);
13578:
13579: my $nameseed=numval($username) << 21;
13580: my $domainseed=unpack("%32S*",$domain) << 10;
13581: my $courseseed=unpack("%32S*",$courseid);
13582:
13583: my $num1=$symbchck+$symbseed+$namechck;
13584: my $num2=$nameseed+$domainseed+$courseseed;
13585: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13586: #&logthis("rndseed :$num:$symb");
13587: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13588: return "$num1,$num2";
13589: }
13590: }
13591:
13592: sub rndseed_64bit2 {
13593: my ($symb,$courseid,$domain,$username)=@_;
13594: {
13595: use integer;
13596: # strings need to be an even # of cahracters long, it it is odd the
13597: # last characters gets thrown away
13598: my $symbchck=unpack("%32S*",$symb.' ') << 21;
13599: my $symbseed=numval($symb) << 10;
13600: my $namechck=unpack("%32S*",$username.' ');
13601:
13602: my $nameseed=numval($username) << 21;
13603: my $domainseed=unpack("%32S*",$domain.' ') << 10;
13604: my $courseseed=unpack("%32S*",$courseid.' ');
13605:
13606: my $num1=$symbchck+$symbseed+$namechck;
13607: my $num2=$nameseed+$domainseed+$courseseed;
13608: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13609: #&logthis("rndseed :$num:$symb");
13610: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13611: return "$num1,$num2";
13612: }
13613: }
13614:
13615: sub rndseed_64bit3 {
13616: my ($symb,$courseid,$domain,$username)=@_;
13617: {
13618: use integer;
13619: # strings need to be an even # of cahracters long, it it is odd the
13620: # last characters gets thrown away
13621: my $symbchck=unpack("%32S*",$symb.' ') << 21;
13622: my $symbseed=numval2($symb) << 10;
13623: my $namechck=unpack("%32S*",$username.' ');
13624:
13625: my $nameseed=numval2($username) << 21;
13626: my $domainseed=unpack("%32S*",$domain.' ') << 10;
13627: my $courseseed=unpack("%32S*",$courseid.' ');
13628:
13629: my $num1=$symbchck+$symbseed+$namechck;
13630: my $num2=$nameseed+$domainseed+$courseseed;
13631: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13632: #&logthis("rndseed :$num1:$num2:$_64bit");
13633: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13634:
13635: return "$num1:$num2";
13636: }
13637: }
13638:
13639: sub rndseed_64bit4 {
13640: my ($symb,$courseid,$domain,$username)=@_;
13641: {
13642: use integer;
13643: # strings need to be an even # of cahracters long, it it is odd the
13644: # last characters gets thrown away
13645: my $symbchck=unpack("%32S*",$symb.' ') << 21;
13646: my $symbseed=numval3($symb) << 10;
13647: my $namechck=unpack("%32S*",$username.' ');
13648:
13649: my $nameseed=numval3($username) << 21;
13650: my $domainseed=unpack("%32S*",$domain.' ') << 10;
13651: my $courseseed=unpack("%32S*",$courseid.' ');
13652:
13653: my $num1=$symbchck+$symbseed+$namechck;
13654: my $num2=$nameseed+$domainseed+$courseseed;
13655: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
13656: #&logthis("rndseed :$num1:$num2:$_64bit");
13657: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
13658:
13659: return "$num1:$num2";
13660: }
13661: }
13662:
13663: sub rndseed_64bit5 {
13664: my ($symb,$courseid,$domain,$username)=@_;
13665: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
13666: return "$num1:$num2";
13667: }
13668:
13669: sub rndseed_CODE_64bit {
13670: my ($symb,$courseid,$domain,$username)=@_;
13671: {
13672: use integer;
13673: my $symbchck=unpack("%32S*",$symb.' ') << 16;
13674: my $symbseed=numval2($symb);
13675: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
13676: my $CODEseed=numval(&getCODE());
13677: my $courseseed=unpack("%32S*",$courseid.' ');
13678: my $num1=$symbseed+$CODEchck;
13679: my $num2=$CODEseed+$courseseed+$symbchck;
13680: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
13681: #&logthis("rndseed :$num1:$num2:$symb");
13682: if ($_64bit) { $num1=(($num1<<32)>>32); }
13683: if ($_64bit) { $num2=(($num2<<32)>>32); }
13684: return "$num1:$num2";
13685: }
13686: }
13687:
13688: sub rndseed_CODE_64bit4 {
13689: my ($symb,$courseid,$domain,$username)=@_;
13690: {
13691: use integer;
13692: my $symbchck=unpack("%32S*",$symb.' ') << 16;
13693: my $symbseed=numval3($symb);
13694: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
13695: my $CODEseed=numval3(&getCODE());
13696: my $courseseed=unpack("%32S*",$courseid.' ');
13697: my $num1=$symbseed+$CODEchck;
13698: my $num2=$CODEseed+$courseseed+$symbchck;
13699: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
13700: #&logthis("rndseed :$num1:$num2:$symb");
13701: if ($_64bit) { $num1=(($num1<<32)>>32); }
13702: if ($_64bit) { $num2=(($num2<<32)>>32); }
13703: return "$num1:$num2";
13704: }
13705: }
13706:
13707: sub rndseed_CODE_64bit5 {
13708: my ($symb,$courseid,$domain,$username)=@_;
13709: my $code = &getCODE();
13710: my ($num1,$num2)=&digest("$symb,$courseid,$code");
13711: return "$num1:$num2";
13712: }
13713:
13714: sub setup_random_from_rndseed {
13715: my ($rndseed)=@_;
13716: if ($rndseed =~/([,:])/) {
13717: my ($num1,$num2) = map { abs($_); } (split(/[,:]/,$rndseed));
13718: if ((!$num1) || (!$num2) || ($num1 > 2147483562) || ($num2 > 2147483398)) {
13719: &Math::Random::random_set_seed_from_phrase($rndseed);
13720: } else {
13721: &Math::Random::random_set_seed($num1,$num2);
13722: }
13723: } else {
13724: &Math::Random::random_set_seed_from_phrase($rndseed);
13725: }
13726: }
13727:
13728: sub latest_receipt_algorithm_id {
13729: return 'receipt3';
13730: }
13731:
13732: sub recunique {
13733: my $fucourseid=shift;
13734: my $unique;
13735: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
13736: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
13737: $unique=$env{"course.$fucourseid.internal.encseed"};
13738: } else {
13739: $unique=$perlvar{'lonReceipt'};
13740: }
13741: return unpack("%32C*",$unique);
13742: }
13743:
13744: sub recprefix {
13745: my $fucourseid=shift;
13746: my $prefix;
13747: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
13748: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
13749: $prefix=$env{"course.$fucourseid.internal.encpref"};
13750: } else {
13751: $prefix=$perlvar{'lonHostID'};
13752: }
13753: return unpack("%32C*",$prefix);
13754: }
13755:
13756: sub ireceipt {
13757: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
13758:
13759: my $return =&recprefix($fucourseid).'-';
13760:
13761: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
13762: $env{'request.state'} eq 'construct') {
13763: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
13764: return $return;
13765: }
13766:
13767: my $cuname=unpack("%32C*",$funame);
13768: my $cudom=unpack("%32C*",$fudom);
13769: my $cucourseid=unpack("%32C*",$fucourseid);
13770: my $cusymb=unpack("%32C*",$fusymb);
13771: my $cunique=&recunique($fucourseid);
13772: my $cpart=unpack("%32S*",$part);
13773: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
13774:
13775: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
13776:
13777: $return.= ($cunique%$cuname+
13778: $cunique%$cudom+
13779: $cusymb%$cuname+
13780: $cusymb%$cudom+
13781: $cucourseid%$cuname+
13782: $cucourseid%$cudom+
13783: $cpart%$cuname+
13784: $cpart%$cudom);
13785: } else {
13786: $return.= ($cunique%$cuname+
13787: $cunique%$cudom+
13788: $cusymb%$cuname+
13789: $cusymb%$cudom+
13790: $cucourseid%$cuname+
13791: $cucourseid%$cudom);
13792: }
13793: return $return;
13794: }
13795:
13796: sub receipt {
13797: my ($part)=@_;
13798: my ($symb,$courseid,$domain,$name) = &whichuser();
13799: return &ireceipt($name,$domain,$courseid,$symb,$part);
13800: }
13801:
13802: sub whichuser {
13803: my ($passedsymb)=@_;
13804: my ($symb,$courseid,$domain,$name,$publicuser);
13805: if (defined($env{'form.grade_symb'})) {
13806: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
13807: my $allowed=&allowed('vgr',$tmp_courseid);
13808: if (!$allowed &&
13809: exists($env{'request.course.sec'}) &&
13810: $env{'request.course.sec'} !~ /^\s*$/) {
13811: $allowed=&allowed('vgr',$tmp_courseid.
13812: '/'.$env{'request.course.sec'});
13813: }
13814: if ($allowed) {
13815: ($symb)=&get_env_multiple('form.grade_symb');
13816: $courseid=$tmp_courseid;
13817: ($domain)=&get_env_multiple('form.grade_domain');
13818: ($name)=&get_env_multiple('form.grade_username');
13819: return ($symb,$courseid,$domain,$name,$publicuser);
13820: }
13821: }
13822: if (!$passedsymb) {
13823: $symb=&symbread();
13824: } else {
13825: $symb=$passedsymb;
13826: }
13827: $courseid=$env{'request.course.id'};
13828: $domain=$env{'user.domain'};
13829: $name=$env{'user.name'};
13830: if ($name eq 'public' && $domain eq 'public') {
13831: if (!defined($env{'form.username'})) {
13832: $env{'form.username'}.=time.rand(10000000);
13833: }
13834: $name.=$env{'form.username'};
13835: }
13836: return ($symb,$courseid,$domain,$name,$publicuser);
13837:
13838: }
13839:
13840: # ------------------------------------------------------------ Serves up a file
13841: # returns either the contents of the file or
13842: # -1 if the file doesn't exist
13843: #
13844: # if the target is a file that was uploaded via DOCS,
13845: # a check will be made to see if a current copy exists on the local server,
13846: # if it does this will be served, otherwise a copy will be retrieved from
13847: # the home server for the course and stored in /home/httpd/html/userfiles on
13848: # the local server.
13849:
13850: sub getfile {
13851: my ($file) = @_;
13852: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
13853: &repcopy($file);
13854: return &readfile($file);
13855: }
13856:
13857: sub repcopy_userfile {
13858: my ($file)=@_;
13859: my $londocroot = $perlvar{'lonDocRoot'};
13860: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
13861: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
13862: my ($cdom,$cnum,$filename) =
13863: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
13864: my $uri="/uploaded/$cdom/$cnum/$filename";
13865: if (-e "$file") {
13866: # we already have a local copy, check it out
13867: my @fileinfo = stat($file);
13868: my $rtncode;
13869: my $info;
13870: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
13871: if ($lwpresp ne 'ok') {
13872: # there is no such file anymore, even though we had a local copy
13873: if ($rtncode eq '404') {
13874: unlink($file);
13875: }
13876: return -1;
13877: }
13878: if ($info < $fileinfo[9]) {
13879: # nice, the file we have is up-to-date, just say okay
13880: return 'ok';
13881: } else {
13882: # the file is outdated, get rid of it
13883: unlink($file);
13884: }
13885: }
13886: # one way or the other, at this point, we don't have the file
13887: # construct the correct path for the file
13888: my @parts = ($cdom,$cnum);
13889: if ($filename =~ m|^(.+)/[^/]+$|) {
13890: push @parts, split(/\//,$1);
13891: }
13892: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
13893: foreach my $part (@parts) {
13894: $path .= '/'.$part;
13895: if (!-e $path) {
13896: mkdir($path,0770);
13897: }
13898: }
13899: # now the path exists for sure
13900: # get a user agent
13901: my $transferfile=$file.'.in.transfer';
13902: # FIXME: this should flock
13903: if (-e $transferfile) { return 'ok'; }
13904: my $request;
13905: $uri=~s/^\///;
13906: my $homeserver = &homeserver($cnum,$cdom);
13907: my $hostname = &hostname($homeserver);
13908: my $protocol = $protocol{$homeserver};
13909: $protocol = 'http' if ($protocol ne 'https');
13910: $request=new HTTP::Request('GET',$protocol.'://'.$hostname.'/raw/'.$uri);
13911: my $response = &LONCAPA::LWPReq::makerequest($homeserver,$request,$transferfile,\%perlvar,'',0,1);
13912: # did it work?
13913: if ($response->is_error()) {
13914: unlink($transferfile);
13915: &logthis("Userfile repcopy failed for $uri");
13916: return -1;
13917: }
13918: # worked, rename the transfer file
13919: rename($transferfile,$file);
13920: return 'ok';
13921: }
13922:
13923: sub tokenwrapper {
13924: my $uri=shift;
13925: $uri=~s|^https?\://([^/]+)||;
13926: $uri=~s|^/||;
13927: $env{'user.environment'}=~/\/([^\/]+)\.id/;
13928: my $token=$1;
13929: my (undef,$udom,$uname,$file)=split('/',$uri,4);
13930: if ($udom && $uname && $file) {
13931: $file=~s|(\?\.*)*$||;
13932: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
13933: my $homeserver = &homeserver($uname,$udom);
13934: my $hostname = &hostname($homeserver);
13935: my $protocol = $protocol{$homeserver};
13936: $protocol = 'http' if ($protocol ne 'https');
13937: return $protocol.'://'.$hostname.'/'.$uri.
13938: (($uri=~/\?/)?'&':'?').'token='.$token.
13939: '&tokenissued='.$perlvar{'lonHostID'};
13940: } else {
13941: return '/adm/notfound.html';
13942: }
13943: }
13944:
13945: # call with reqtype HEAD: get last modification time
13946: # call with reqtype GET: get the file contents
13947: # Do not call this with reqtype GET for large files! It loads everything into memory
13948: #
13949: sub getuploaded {
13950: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
13951: $uri=~s/^\///;
13952: my $homeserver = &homeserver($cnum,$cdom);
13953: my $hostname = &hostname($homeserver);
13954: my $protocol = $protocol{$homeserver};
13955: $protocol = 'http' if ($protocol ne 'https');
13956: $uri = $protocol.'://'.$hostname.'/raw/'.$uri;
13957: my $request=new HTTP::Request($reqtype,$uri);
13958: my $response=&LONCAPA::LWPReq::makerequest($homeserver,$request,'',\%perlvar,'',0,1);
13959: $$rtncode = $response->code;
13960: if (! $response->is_success()) {
13961: return 'failed';
13962: }
13963: if ($reqtype eq 'HEAD') {
13964: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
13965: } elsif ($reqtype eq 'GET') {
13966: $$info = $response->content;
13967: }
13968: return 'ok';
13969: }
13970:
13971: sub readfile {
13972: my $file = shift;
13973: if ( (! -e $file ) || ($file eq '') ) { return -1; };
13974: my $fh;
13975: open($fh,"<",$file);
13976: my $a='';
13977: while (my $line = <$fh>) { $a .= $line; }
13978: return $a;
13979: }
13980:
13981: sub filelocation {
13982: my ($dir,$file) = @_;
13983: my $location;
13984: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
13985:
13986: if ($file =~ m-^/adm/-) {
13987: $file=~s-^/adm/wrapper/-/-;
13988: $file=~s-^/adm/coursedocs/showdoc/-/-;
13989: }
13990:
13991: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
13992: $location = $file;
13993: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
13994: my ($udom,$uname,$filename)=
13995: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
13996: my $home=&homeserver($uname,$udom);
13997: my $is_me=0;
13998: my @ids=¤t_machine_ids();
13999: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
14000: if ($is_me) {
14001: $location=propath($udom,$uname).'/userfiles/'.$filename;
14002: } else {
14003: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
14004: $udom.'/'.$uname.'/'.$filename;
14005: }
14006: } elsif ($file =~ m-^/adm/-) {
14007: $location = $perlvar{'lonDocRoot'}.'/'.$file;
14008: } else {
14009: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
14010: $file=~s:^/(res|priv)/:/:;
14011: my $space=$1;
14012: if ( !( $file =~ m:^/:) ) {
14013: $location = $dir. '/'.$file;
14014: } else {
14015: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
14016: }
14017: }
14018: $location=~s://+:/:g; # remove duplicate /
14019: while ($location=~m{/\.\./}) {
14020: if ($location =~ m{/[^/]+/\.\./}) {
14021: $location=~ s{/[^/]+/\.\./}{/}g;
14022: } else {
14023: $location=~ s{/\.\./}{/}g;
14024: }
14025: } #remove dir/..
14026: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
14027: return $location;
14028: }
14029:
14030: sub hreflocation {
14031: my ($dir,$file)=@_;
14032: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
14033: $file=filelocation($dir,$file);
14034: } elsif ($file=~m-^/adm/-) {
14035: $file=~s-^/adm/wrapper/-/-;
14036: $file=~s-^/adm/coursedocs/showdoc/-/-;
14037: }
14038: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
14039: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
14040: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
14041: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
14042: {/uploaded/$1/$2/}x;
14043: }
14044: if ($file=~ m{^/userfiles/}) {
14045: $file =~ s{^/userfiles/}{/uploaded/};
14046: }
14047: return $file;
14048: }
14049:
14050:
14051:
14052:
14053:
14054: sub current_machine_domains {
14055: return &machine_domains(&hostname($perlvar{'lonHostID'}));
14056: }
14057:
14058: sub machine_domains {
14059: my ($hostname) = @_;
14060: my @domains;
14061: my %hostname = &all_hostnames();
14062: while( my($id, $name) = each(%hostname)) {
14063: # &logthis("-$id-$name-$hostname-");
14064: if ($hostname eq $name) {
14065: push(@domains,&host_domain($id));
14066: }
14067: }
14068: return @domains;
14069: }
14070:
14071: sub current_machine_ids {
14072: return &machine_ids(&hostname($perlvar{'lonHostID'}));
14073: }
14074:
14075: sub machine_ids {
14076: my ($hostname) = @_;
14077: $hostname ||= &hostname($perlvar{'lonHostID'});
14078: my @ids;
14079: my %name_to_host = &all_names();
14080: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
14081: return @{ $name_to_host{$hostname} };
14082: }
14083: return;
14084: }
14085:
14086: sub additional_machine_domains {
14087: my @domains;
14088: open(my $fh,"<","$perlvar{'lonTabDir'}/expected_domains.tab");
14089: while( my $line = <$fh>) {
14090: $line =~ s/\s//g;
14091: push(@domains,$line);
14092: }
14093: return @domains;
14094: }
14095:
14096: sub default_login_domain {
14097: my $domain = $perlvar{'lonDefDomain'};
14098: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
14099: foreach my $posdom (¤t_machine_domains(),
14100: &additional_machine_domains()) {
14101: if (lc($posdom) eq lc($testdomain)) {
14102: $domain=$posdom;
14103: last;
14104: }
14105: }
14106: return $domain;
14107: }
14108:
14109: sub shared_institution {
14110: my ($dom) = @_;
14111: my $same_intdom;
14112: my $hostintdom = &internet_dom($perlvar{'lonHostID'});
14113: if ($hostintdom ne '') {
14114: my %iphost = &get_iphost();
14115: my $primary_id = &domain($dom,'primary');
14116: my $primary_ip = &get_host_ip($primary_id);
14117: if (ref($iphost{$primary_ip}) eq 'ARRAY') {
14118: foreach my $id (@{$iphost{$primary_ip}}) {
14119: my $intdom = &internet_dom($id);
14120: if ($intdom eq $hostintdom) {
14121: $same_intdom = 1;
14122: last;
14123: }
14124: }
14125: }
14126: }
14127: return $same_intdom;
14128: }
14129:
14130: sub uses_sts {
14131: my ($ignore_cache) = @_;
14132: my $lonhost = $perlvar{'lonHostID'};
14133: my $hostname = &hostname($lonhost);
14134: my $sts_on;
14135: if ($protocol{$lonhost} eq 'https') {
14136: my $cachetime = 12*3600;
14137: if (!$ignore_cache) {
14138: ($sts_on,my $cached)=&is_cached_new('stspolicy',$lonhost);
14139: if (defined($cached)) {
14140: return $sts_on;
14141: }
14142: }
14143: my $url = $protocol{$lonhost}.'://'.$hostname.'/index.html';
14144: my $request=new HTTP::Request('HEAD',$url);
14145: my $response=&LONCAPA::LWPReq::makerequest($lonhost,$request,'',\%perlvar,'','','',1);
14146: if ($response->is_success) {
14147: my $has_sts = $response->header('Strict-Transport-Security');
14148: if ($has_sts eq '') {
14149: $sts_on = 0;
14150: } else {
14151: if ($has_sts =~ /\Qmax-age=\E(\d+)/) {
14152: my $maxage = $1;
14153: if ($maxage) {
14154: $sts_on = 1;
14155: } else {
14156: $sts_on = 0;
14157: }
14158: } else {
14159: $sts_on = 0;
14160: }
14161: }
14162: return &do_cache_new('stspolicy',$lonhost,$sts_on,$cachetime);
14163: }
14164: }
14165: return;
14166: }
14167:
14168: # ------------------------------------------------------------- Declutters URLs
14169:
14170: sub declutter {
14171: my $thisfn=shift;
14172: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
14173: unless ($thisfn=~m{^/home/httpd/html/priv/}) {
14174: $thisfn=~s{^/home/httpd/html}{};
14175: }
14176: $thisfn=~s/^\///;
14177: $thisfn=~s|^adm/wrapper/||;
14178: $thisfn=~s|^adm/coursedocs/showdoc/||;
14179: $thisfn=~s/^res\///;
14180: $thisfn=~s/^priv\///;
14181: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
14182: $thisfn=~s/\?.+$//;
14183: }
14184: return $thisfn;
14185: }
14186:
14187: # ------------------------------------------------------------- Clutter up URLs
14188:
14189: sub clutter {
14190: my $thisfn='/'.&declutter(shift);
14191: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
14192: || $thisfn =~ m{^/adm/(includes|pages)} ) {
14193: $thisfn='/res'.$thisfn;
14194: }
14195: if ($thisfn !~m|^/adm|) {
14196: if ($thisfn =~ m|^/ext/|) {
14197: $thisfn='/adm/wrapper'.$thisfn;
14198: } else {
14199: my ($ext) = ($thisfn =~ /\.(\w+)$/);
14200: my $embstyle=&Apache::loncommon::fileembstyle($ext);
14201: if ($embstyle eq 'ssi'
14202: || ($embstyle eq 'hdn')
14203: || ($embstyle eq 'rat')
14204: || ($embstyle eq 'prv')
14205: || ($embstyle eq 'ign')) {
14206: #do nothing with these
14207: } elsif (($embstyle eq 'img')
14208: || ($embstyle eq 'emb')
14209: || ($embstyle eq 'wrp')) {
14210: $thisfn='/adm/wrapper'.$thisfn;
14211: } elsif ($embstyle eq 'unk'
14212: && $thisfn!~/\.(sequence|page)$/) {
14213: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
14214: } else {
14215: # &logthis("Got a blank emb style");
14216: }
14217: }
14218: } elsif ($thisfn =~ m{^/adm/$match_domain/$match_courseid/\d+/ext\.tool$}) {
14219: $thisfn='/adm/wrapper'.$thisfn;
14220: }
14221: return $thisfn;
14222: }
14223:
14224: sub clutter_with_no_wrapper {
14225: my $uri = &clutter(shift);
14226: if ($uri =~ m-^/adm/-) {
14227: $uri =~ s-^/adm/wrapper/-/-;
14228: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
14229: }
14230: return $uri;
14231: }
14232:
14233: sub freeze_escape {
14234: my ($value)=@_;
14235: if (ref($value)) {
14236: $value=&nfreeze($value);
14237: return '__FROZEN__'.&escape($value);
14238: }
14239: return &escape($value);
14240: }
14241:
14242:
14243: sub thaw_unescape {
14244: my ($value)=@_;
14245: if ($value =~ /^__FROZEN__/) {
14246: substr($value,0,10,undef);
14247: $value=&unescape($value);
14248: return &thaw($value);
14249: }
14250: return &unescape($value);
14251: }
14252:
14253: sub correct_line_ends {
14254: my ($result)=@_;
14255: $$result =~s/\r\n/\n/mg;
14256: $$result =~s/\r/\n/mg;
14257: }
14258: # ================================================================ Main Program
14259:
14260: sub goodbye {
14261: &logthis("Starting Shut down");
14262: #not converted to using infrastruture and probably shouldn't be
14263: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
14264: #converted
14265: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
14266: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
14267: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
14268: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
14269: #1.1 only
14270: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
14271: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
14272: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
14273: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
14274: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
14275: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
14276: &logthis(sprintf("%-20s is %s",'hits',$hits));
14277: &flushcourselogs();
14278: &logthis("Shutting down");
14279: }
14280:
14281: sub get_dns {
14282: my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
14283: if (!$ignore_cache) {
14284: my ($content,$cached)=
14285: &Apache::lonnet::is_cached_new('dns',$url);
14286: if ($cached) {
14287: &$func($content,$hashref);
14288: return;
14289: }
14290: }
14291:
14292: my %alldns;
14293: if (open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab")) {
14294: foreach my $dns (<$config>) {
14295: next if ($dns !~ /^\^(\S*)/x);
14296: my $line = $1;
14297: my ($host,$protocol) = split(/:/,$line);
14298: if ($protocol ne 'https') {
14299: $protocol = 'http';
14300: }
14301: $alldns{$host} = $protocol;
14302: }
14303: close($config);
14304: }
14305: while (%alldns) {
14306: my ($dns) = sort { $b cmp $a } keys(%alldns);
14307: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
14308: my $response = &LONCAPA::LWPReq::makerequest('',$request,'',\%perlvar,30,0);
14309: delete($alldns{$dns});
14310: next if ($response->is_error());
14311: if ($url eq '/adm/dns/loncapaCRL') {
14312: return &$func($response);
14313: } else {
14314: my @content = split("\n",$response->content);
14315: unless ($nocache) {
14316: &do_cache_new('dns',$url,\@content,30*24*60*60);
14317: }
14318: &$func(\@content,$hashref);
14319: return;
14320: }
14321: }
14322: my $which = (split('/',$url,4))[3];
14323: if ($which eq 'loncapaCRL') {
14324: my $diskfile = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
14325: if (-e $diskfile) {
14326: &logthis("unable to contact DNS, on disk file $diskfile not updated");
14327: } else {
14328: &logthis("unable to contact DNS, no on disk file $diskfile available");
14329: }
14330: } else {
14331: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
14332: if (open(my $config,"<","$perlvar{'lonTabDir'}/dns_$which.tab")) {
14333: my @content = <$config>;
14334: close($config);
14335: &$func(\@content,$hashref);
14336: }
14337: }
14338: return;
14339: }
14340:
14341: # ------------------------------------------------------Get DNS checksums file
14342: sub parse_dns_checksums_tab {
14343: my ($lines,$hashref) = @_;
14344: my $lonhost = $perlvar{'lonHostID'};
14345: my $machine_dom = &Apache::lonnet::host_domain($lonhost);
14346: my $loncaparev = &get_server_loncaparev($machine_dom);
14347: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
14348: my $webconfdir = '/etc/httpd/conf';
14349: if ($distro =~ /^(ubuntu|debian)(\d+)$/) {
14350: $webconfdir = '/etc/apache2';
14351: } elsif ($distro =~ /^sles(\d+)$/) {
14352: if ($1 >= 10) {
14353: $webconfdir = '/etc/apache2';
14354: }
14355: } elsif ($distro =~ /^suse(\d+\.\d+)$/) {
14356: if ($1 >= 10.0) {
14357: $webconfdir = '/etc/apache2';
14358: }
14359: }
14360: my ($release,$timestamp) = split(/\-/,$loncaparev);
14361: my (%chksum,%revnum);
14362: if (ref($lines) eq 'ARRAY') {
14363: chomp(@{$lines});
14364: my $version = shift(@{$lines});
14365: if ($version eq $release) {
14366: foreach my $line (@{$lines}) {
14367: my ($file,$version,$shasum) = split(/,/,$line);
14368: if ($file =~ m{^/etc/httpd/conf}) {
14369: if ($webconfdir eq '/etc/apache2') {
14370: $file =~ s{^\Q/etc/httpd/conf/\E}{$webconfdir/};
14371: }
14372: }
14373: $chksum{$file} = $shasum;
14374: $revnum{$file} = $version;
14375: }
14376: if (ref($hashref) eq 'HASH') {
14377: %{$hashref} = (
14378: sums => \%chksum,
14379: versions => \%revnum,
14380: );
14381: }
14382: }
14383: }
14384: return;
14385: }
14386:
14387: sub fetch_dns_checksums {
14388: my %checksums;
14389: my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
14390: my $loncaparev = &get_server_loncaparev($machine_dom,$perlvar{'lonHostID'});
14391: my ($release,$timestamp) = split(/\-/,$loncaparev);
14392: &get_dns("/adm/dns/checksums/$release",\&parse_dns_checksums_tab,1,1,
14393: \%checksums);
14394: return \%checksums;
14395: }
14396:
14397: sub fetch_crl_pemfile {
14398: return &get_dns("/adm/dns/loncapaCRL",\&save_crl_pem,1,1);
14399: }
14400:
14401: sub save_crl_pem {
14402: my ($response) = @_;
14403: my ($msg,$hadchanges);
14404: if (ref($response)) {
14405: my $now = time;
14406: my $lonca = $perlvar{'lonCertificateDirectory'}.'/'.$perlvar{'lonnetCertificateAuthority'};
14407: my $tmpcrl = $tmpdir.'/'.$perlvar{'lonnetCertRevocationList'}.'_'.$now.'.'.$$.'.tmp';
14408: if (open(my $fh,'>',"$tmpcrl")) {
14409: print $fh $response->content;
14410: close($fh);
14411: if (-e $lonca) {
14412: if (open(PIPE,"openssl crl -in $tmpcrl -inform pem -CAfile $lonca -noout 2>&1 |")) {
14413: my $check = <PIPE>;
14414: close(PIPE);
14415: chomp($check);
14416: if ($check eq 'verify OK') {
14417: my $dest = "$perlvar{'lonCertificateDirectory'}/$perlvar{'lonnetCertRevocationList'}";
14418: my $backup;
14419: if (-e $dest) {
14420: if (&File::Copy::move($dest,"$dest.bak")) {
14421: $backup = 'ok';
14422: }
14423: }
14424: if (&File::Copy::move($tmpcrl,$dest)) {
14425: $msg = 'ok';
14426: if ($backup) {
14427: my (%oldnums,%newnums);
14428: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest.bak |grep 'Serial Number' |")) {
14429: while (<PIPE>) {
14430: $oldnums{(split(/:/))[1]} = 1;
14431: }
14432: close(PIPE);
14433: }
14434: if (open(PIPE, "openssl crl -inform PEM -text -noout -in $dest |grep 'Serial Number' |")) {
14435: while(<PIPE>) {
14436: $newnums{(split(/:/))[1]} = 1;
14437: }
14438: close(PIPE);
14439: }
14440: foreach my $key (sort {$b <=> $a } (keys(%newnums))) {
14441: unless (exists($oldnums{$key})) {
14442: $hadchanges = 1;
14443: last;
14444: }
14445: }
14446: unless ($hadchanges) {
14447: foreach my $key (sort {$b <=> $a } (keys(%oldnums))) {
14448: unless (exists($newnums{$key})) {
14449: $hadchanges = 1;
14450: last;
14451: }
14452: }
14453: }
14454: }
14455: }
14456: } else {
14457: unlink($tmpcrl);
14458: }
14459: } else {
14460: unlink($tmpcrl);
14461: }
14462: } else {
14463: unlink($tmpcrl);
14464: }
14465: }
14466: }
14467: return ($msg,$hadchanges);
14468: }
14469:
14470: # ------------------------------------------------------------ Read domain file
14471: {
14472: my $loaded;
14473: my %domain;
14474:
14475: sub parse_domain_tab {
14476: my ($lines) = @_;
14477: foreach my $line (@$lines) {
14478: next if ($line =~ /^(\#|\s*$ )/x);
14479:
14480: chomp($line);
14481: my ($name,@elements) = split(/:/,$line,9);
14482: my %this_domain;
14483: foreach my $field ('description', 'auth_def', 'auth_arg_def',
14484: 'lang_def', 'city', 'longi', 'lati',
14485: 'primary') {
14486: $this_domain{$field} = shift(@elements);
14487: }
14488: $domain{$name} = \%this_domain;
14489: }
14490: }
14491:
14492: sub reset_domain_info {
14493: undef($loaded);
14494: undef(%domain);
14495: }
14496:
14497: sub load_domain_tab {
14498: my ($ignore_cache,$nocache) = @_;
14499: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache,$nocache);
14500: my $fh;
14501: if (open($fh,"<",$perlvar{'lonTabDir'}.'/domain.tab')) {
14502: my @lines = <$fh>;
14503: &parse_domain_tab(\@lines);
14504: }
14505: close($fh);
14506: $loaded = 1;
14507: }
14508:
14509: sub domain {
14510: &load_domain_tab() if (!$loaded);
14511:
14512: my ($name,$what) = @_;
14513: return if ( !exists($domain{$name}) );
14514:
14515: if (!$what) {
14516: return $domain{$name}{'description'};
14517: }
14518: return $domain{$name}{$what};
14519: }
14520:
14521: sub domain_info {
14522: &load_domain_tab() if (!$loaded);
14523: return %domain;
14524: }
14525:
14526: }
14527:
14528:
14529: # ------------------------------------------------------------- Read hosts file
14530: {
14531: my %hostname;
14532: my %hostdom;
14533: my %libserv;
14534: my $loaded;
14535: my %name_to_host;
14536: my %internetdom;
14537: my %LC_dns_serv;
14538:
14539: sub parse_hosts_tab {
14540: my ($file) = @_;
14541: foreach my $configline (@$file) {
14542: next if ($configline =~ /^(\#|\s*$ )/x);
14543: chomp($configline);
14544: if ($configline =~ /^\^/) {
14545: if ($configline =~ /^\^([\w.\-]+)/) {
14546: $LC_dns_serv{$1} = 1;
14547: }
14548: next;
14549: }
14550: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
14551: $name=~s/\s//g;
14552: if ($id && $domain && $role && $name) {
14553: if ((exists($hostname{$id})) && ($hostname{$id} ne '')) {
14554: my $curr = $hostname{$id};
14555: my $skip;
14556: if (ref($name_to_host{$curr}) eq 'ARRAY') {
14557: if (($curr eq $name) && (@{$name_to_host{$curr}} == 1)) {
14558: $skip = 1;
14559: } else {
14560: @{$name_to_host{$curr}} = grep { $_ ne $id } @{$name_to_host{$curr}};
14561: }
14562: }
14563: unless ($skip) {
14564: push(@{$name_to_host{$name}},$id);
14565: }
14566: } else {
14567: push(@{$name_to_host{$name}},$id);
14568: }
14569: $hostname{$id}=$name;
14570: $hostdom{$id}=$domain;
14571: if ($role eq 'library') { $libserv{$id}=$name; }
14572: if (defined($protocol)) {
14573: if ($protocol eq 'https') {
14574: $protocol{$id} = $protocol;
14575: } else {
14576: $protocol{$id} = 'http';
14577: }
14578: } else {
14579: $protocol{$id} = 'http';
14580: }
14581: if (defined($intdom)) {
14582: $internetdom{$id} = $intdom;
14583: }
14584: }
14585: }
14586: }
14587:
14588: sub reset_hosts_info {
14589: &purge_remembered();
14590: &reset_domain_info();
14591: &reset_hosts_ip_info();
14592: undef(%internetdom);
14593: undef(%name_to_host);
14594: undef(%hostname);
14595: undef(%hostdom);
14596: undef(%libserv);
14597: undef($loaded);
14598: }
14599:
14600: sub load_hosts_tab {
14601: my ($ignore_cache,$nocache) = @_;
14602: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache,$nocache);
14603: open(my $config,"<","$perlvar{'lonTabDir'}/hosts.tab");
14604: my @config = <$config>;
14605: &parse_hosts_tab(\@config);
14606: close($config);
14607: $loaded=1;
14608: }
14609:
14610: sub hostname {
14611: &load_hosts_tab() if (!$loaded);
14612:
14613: my ($lonid) = @_;
14614: return $hostname{$lonid};
14615: }
14616:
14617: sub all_hostnames {
14618: &load_hosts_tab() if (!$loaded);
14619:
14620: return %hostname;
14621: }
14622:
14623: sub all_names {
14624: my ($ignore_cache,$nocache) = @_;
14625: &load_hosts_tab($ignore_cache,$nocache) if (!$loaded);
14626:
14627: return %name_to_host;
14628: }
14629:
14630: sub all_host_domain {
14631: &load_hosts_tab() if (!$loaded);
14632: return %hostdom;
14633: }
14634:
14635: sub all_host_intdom {
14636: &load_hosts_tab() if (!$loaded);
14637: return %internetdom;
14638: }
14639:
14640: sub is_library {
14641: &load_hosts_tab() if (!$loaded);
14642:
14643: return exists($libserv{$_[0]});
14644: }
14645:
14646: sub all_library {
14647: &load_hosts_tab() if (!$loaded);
14648:
14649: return %libserv;
14650: }
14651:
14652: sub unique_library {
14653: #2x reverse removes all hostnames that appear more than once
14654: my %unique = reverse &all_library();
14655: return reverse %unique;
14656: }
14657:
14658: sub get_servers {
14659: &load_hosts_tab() if (!$loaded);
14660:
14661: my ($domain,$type) = @_;
14662: my %possible_hosts = ($type eq 'library') ? %libserv
14663: : %hostname;
14664: my %result;
14665: if (ref($domain) eq 'ARRAY') {
14666: while ( my ($host,$hostname) = each(%possible_hosts)) {
14667: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
14668: $result{$host} = $hostname;
14669: }
14670: }
14671: } else {
14672: while ( my ($host,$hostname) = each(%possible_hosts)) {
14673: if ($hostdom{$host} eq $domain) {
14674: $result{$host} = $hostname;
14675: }
14676: }
14677: }
14678: return %result;
14679: }
14680:
14681: sub get_unique_servers {
14682: my %unique = reverse &get_servers(@_);
14683: return reverse %unique;
14684: }
14685:
14686: sub host_domain {
14687: &load_hosts_tab() if (!$loaded);
14688:
14689: my ($lonid) = @_;
14690: return $hostdom{$lonid};
14691: }
14692:
14693: sub all_domains {
14694: &load_hosts_tab() if (!$loaded);
14695:
14696: my %seen;
14697: my @uniq = grep(!$seen{$_}++, values(%hostdom));
14698: return @uniq;
14699: }
14700:
14701: sub internet_dom {
14702: &load_hosts_tab() if (!$loaded);
14703:
14704: my ($lonid) = @_;
14705: return $internetdom{$lonid};
14706: }
14707:
14708: sub is_LC_dns {
14709: &load_hosts_tab() if (!$loaded);
14710:
14711: my ($hostname) = @_;
14712: return exists($LC_dns_serv{$hostname});
14713: }
14714:
14715: }
14716:
14717: {
14718: my %iphost;
14719: my %name_to_ip;
14720: my %lonid_to_ip;
14721:
14722: sub get_hosts_from_ip {
14723: my ($ip) = @_;
14724: my %iphosts = &get_iphost();
14725: if (ref($iphosts{$ip})) {
14726: return @{$iphosts{$ip}};
14727: }
14728: return;
14729: }
14730:
14731: sub reset_hosts_ip_info {
14732: undef(%iphost);
14733: undef(%name_to_ip);
14734: undef(%lonid_to_ip);
14735: }
14736:
14737: sub get_host_ip {
14738: my ($lonid) = @_;
14739: if (exists($lonid_to_ip{$lonid})) {
14740: return $lonid_to_ip{$lonid};
14741: }
14742: my $name=&hostname($lonid);
14743: my $ip = gethostbyname($name);
14744: return if (!$ip || length($ip) ne 4);
14745: $ip=inet_ntoa($ip);
14746: $name_to_ip{$name} = $ip;
14747: $lonid_to_ip{$lonid} = $ip;
14748: return $ip;
14749: }
14750:
14751: sub get_iphost {
14752: my ($ignore_cache,$nocache) = @_;
14753:
14754: if (!$ignore_cache) {
14755: if (%iphost) {
14756: return %iphost;
14757: }
14758: my ($ip_info,$cached)=
14759: &Apache::lonnet::is_cached_new('iphost','iphost');
14760: if ($cached) {
14761: %iphost = %{$ip_info->[0]};
14762: %name_to_ip = %{$ip_info->[1]};
14763: %lonid_to_ip = %{$ip_info->[2]};
14764: return %iphost;
14765: }
14766: }
14767:
14768: # get yesterday's info for fallback
14769: my %old_name_to_ip;
14770: my ($ip_info,$cached)=
14771: &Apache::lonnet::is_cached_new('iphost','iphost');
14772: if ($cached) {
14773: %old_name_to_ip = %{$ip_info->[1]};
14774: }
14775:
14776: my %name_to_host = &all_names($ignore_cache,$nocache);
14777: foreach my $name (keys(%name_to_host)) {
14778: my $ip;
14779: if (!exists($name_to_ip{$name})) {
14780: $ip = gethostbyname($name);
14781: if (!$ip || length($ip) ne 4) {
14782: if (defined($old_name_to_ip{$name})) {
14783: $ip = $old_name_to_ip{$name};
14784: &logthis("Can't find $name defaulting to old $ip");
14785: } else {
14786: &logthis("Name $name no IP found");
14787: next;
14788: }
14789: } else {
14790: $ip=inet_ntoa($ip);
14791: }
14792: $name_to_ip{$name} = $ip;
14793: } else {
14794: $ip = $name_to_ip{$name};
14795: }
14796: foreach my $id (@{ $name_to_host{$name} }) {
14797: $lonid_to_ip{$id} = $ip;
14798: }
14799: push(@{$iphost{$ip}},@{$name_to_host{$name}});
14800: }
14801: unless ($nocache) {
14802: &do_cache_new('iphost','iphost',
14803: [\%iphost,\%name_to_ip,\%lonid_to_ip],
14804: 48*60*60);
14805: }
14806:
14807: return %iphost;
14808: }
14809:
14810: #
14811: # Given a DNS returns the loncapa host name for that DNS
14812: #
14813: sub host_from_dns {
14814: my ($dns) = @_;
14815: my @hosts;
14816: my $ip;
14817:
14818: if (exists($name_to_ip{$dns})) {
14819: $ip = $name_to_ip{$dns};
14820: }
14821: if (!$ip) {
14822: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
14823: if (length($ip) == 4) {
14824: $ip = &IO::Socket::inet_ntoa($ip);
14825: }
14826: }
14827: if ($ip) {
14828: @hosts = get_hosts_from_ip($ip);
14829: return $hosts[0];
14830: }
14831: return undef;
14832: }
14833:
14834: sub get_internet_names {
14835: my ($lonid) = @_;
14836: return if ($lonid eq '');
14837: my ($idnref,$cached)=
14838: &Apache::lonnet::is_cached_new('internetnames',$lonid);
14839: if ($cached) {
14840: return $idnref;
14841: }
14842: my $ip = &get_host_ip($lonid);
14843: my @hosts = &get_hosts_from_ip($ip);
14844: my %iphost = &get_iphost();
14845: my (@idns,%seen);
14846: foreach my $id (@hosts) {
14847: my $dom = &host_domain($id);
14848: my $prim_id = &domain($dom,'primary');
14849: my $prim_ip = &get_host_ip($prim_id);
14850: next if ($seen{$prim_ip});
14851: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
14852: foreach my $id (@{$iphost{$prim_ip}}) {
14853: my $intdom = &internet_dom($id);
14854: unless (grep(/^\Q$intdom\E$/,@idns)) {
14855: push(@idns,$intdom);
14856: }
14857: }
14858: }
14859: $seen{$prim_ip} = 1;
14860: }
14861: return &do_cache_new('internetnames',$lonid,\@idns,12*60*60);
14862: }
14863:
14864: }
14865:
14866: sub all_loncaparevs {
14867: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11);
14868: }
14869:
14870: # ---------------------------------------------------------- Read loncaparev table
14871: {
14872: sub load_loncaparevs {
14873: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
14874: if (open(my $config,"<","$perlvar{'lonTabDir'}/loncaparevs.tab")) {
14875: while (my $configline=<$config>) {
14876: chomp($configline);
14877: my ($hostid,$loncaparev)=split(/:/,$configline);
14878: $loncaparevs{$hostid}=$loncaparev;
14879: }
14880: close($config);
14881: }
14882: }
14883: }
14884: }
14885:
14886: # ---------------------------------------------------------- Read serverhostID table
14887: {
14888: sub load_serverhomeIDs {
14889: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
14890: if (open(my $config,"<","$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
14891: while (my $configline=<$config>) {
14892: chomp($configline);
14893: my ($name,$id)=split(/:/,$configline);
14894: $serverhomeIDs{$name}=$id;
14895: }
14896: close($config);
14897: }
14898: }
14899: }
14900: }
14901:
14902:
14903: BEGIN {
14904:
14905: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
14906: unless ($readit) {
14907: {
14908: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
14909: %perlvar = (%perlvar,%{$configvars});
14910: }
14911:
14912:
14913: # ------------------------------------------------------ Read spare server file
14914: {
14915: open(my $config,"<","$perlvar{'lonTabDir'}/spare.tab");
14916:
14917: while (my $configline=<$config>) {
14918: chomp($configline);
14919: if ($configline) {
14920: my ($host,$type) = split(':',$configline,2);
14921: if (!defined($type) || $type eq '') { $type = 'default' };
14922: push(@{ $spareid{$type} }, $host);
14923: }
14924: }
14925: close($config);
14926: }
14927: # ------------------------------------------------------------ Read permissions
14928: {
14929: open(my $config,"<","$perlvar{'lonTabDir'}/roles.tab");
14930:
14931: while (my $configline=<$config>) {
14932: chomp($configline);
14933: if ($configline) {
14934: my ($role,$perm)=split(/ /,$configline);
14935: if ($perm ne '') { $pr{$role}=$perm; }
14936: }
14937: }
14938: close($config);
14939: }
14940:
14941: # -------------------------------------------- Read plain texts for permissions
14942: {
14943: open(my $config,"<","$perlvar{'lonTabDir'}/rolesplain.tab");
14944:
14945: while (my $configline=<$config>) {
14946: chomp($configline);
14947: if ($configline) {
14948: my ($short,@plain)=split(/:/,$configline);
14949: %{$prp{$short}} = ();
14950: if (@plain > 0) {
14951: $prp{$short}{'std'} = $plain[0];
14952: for (my $i=1; $i<@plain; $i++) {
14953: $prp{$short}{'alt'.$i} = $plain[$i];
14954: }
14955: }
14956: }
14957: }
14958: close($config);
14959: }
14960:
14961: # ---------------------------------------------------------- Read package table
14962: {
14963: open(my $config,"<","$perlvar{'lonTabDir'}/packages.tab");
14964:
14965: while (my $configline=<$config>) {
14966: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
14967: chomp($configline);
14968: my ($short,$plain)=split(/:/,$configline);
14969: my ($pack,$name)=split(/\&/,$short);
14970: if ($plain ne '') {
14971: $packagetab{$pack.'&'.$name.'&name'}=$name;
14972: $packagetab{$short}=$plain;
14973: }
14974: }
14975: close($config);
14976: }
14977:
14978: # ---------------------------------------------------------- Read loncaparev table
14979:
14980: &load_loncaparevs();
14981:
14982: # ---------------------------------------------------------- Read serverhostID table
14983:
14984: &load_serverhomeIDs();
14985:
14986: # ---------------------------------------------------------- Read releaseslist XML
14987: {
14988: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
14989: if (-e $file) {
14990: my $parser = HTML::LCParser->new($file);
14991: while (my $token = $parser->get_token()) {
14992: if ($token->[0] eq 'S') {
14993: my $item = $token->[1];
14994: my $name = $token->[2]{'name'};
14995: my $value = $token->[2]{'value'};
14996: my $valuematch = $token->[2]{'valuematch'};
14997: my $namematch = $token->[2]{'namematch'};
14998: if ($item eq 'parameter') {
14999: if (($namematch ne '') || (($name ne '') && ($value ne '' || $valuematch ne ''))) {
15000: my $release = $parser->get_text();
15001: $release =~ s/(^\s*|\s*$ )//gx;
15002: $needsrelease{$item.':'.$name.':'.$value.':'.$valuematch.':'.$namematch} = $release;
15003: }
15004: } elsif ($item ne '' && $name ne '') {
15005: my $release = $parser->get_text();
15006: $release =~ s/(^\s*|\s*$ )//gx;
15007: $needsrelease{$item.':'.$name.':'.$value} = $release;
15008: }
15009: }
15010: }
15011: }
15012: }
15013:
15014: # ---------------------------------------------------------- Read managers table
15015: {
15016: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
15017: if (open(my $config,"<","$perlvar{'lonTabDir'}/managers.tab")) {
15018: while (my $configline=<$config>) {
15019: chomp($configline);
15020: next if ($configline =~ /^\#/);
15021: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
15022: $managerstab{$configline} = 1;
15023: }
15024: }
15025: close($config);
15026: }
15027: }
15028: }
15029:
15030: # ------------- set up temporary directory
15031: {
15032: $tmpdir = LONCAPA::tempdir();
15033:
15034: }
15035:
15036: # ------------- set default texengine (domain default overrides this)
15037: {
15038: $deftex = LONCAPA::texengine();
15039: }
15040:
15041: # ------------- set default minimum length for passwords for internal auth users
15042: {
15043: $passwdmin = LONCAPA::passwd_min();
15044: }
15045:
15046: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
15047: 'compress_threshold'=> 20_000,
15048: });
15049:
15050: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
15051: $dumpcount=0;
15052: $locknum=0;
15053:
15054: &logtouch();
15055: &logthis('<font color="yellow">INFO: Read configuration</font>');
15056: $readit=1;
15057: {
15058: use integer;
15059: my $test=(2**32)+1;
15060: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
15061: &logthis(" Detected 64bit platform ($_64bit)");
15062: }
15063: }
15064: }
15065:
15066: 1;
15067: __END__
15068:
15069: =pod
15070:
15071: =head1 NAME
15072:
15073: Apache::lonnet - Subroutines to ask questions about things in the network.
15074:
15075: =head1 SYNOPSIS
15076:
15077: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
15078:
15079: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
15080:
15081: Common parameters:
15082:
15083: =over 4
15084:
15085: =item *
15086:
15087: $uname : an internal username (if $cname expecting a course Id specifically)
15088:
15089: =item *
15090:
15091: $udom : a domain (if $cdom expecting a course's domain specifically)
15092:
15093: =item *
15094:
15095: $symb : a resource instance identifier
15096:
15097: =item *
15098:
15099: $namespace : the name of a .db file that contains the data needed or
15100: being set.
15101:
15102: =back
15103:
15104: =head1 OVERVIEW
15105:
15106: lonnet provides subroutines which interact with the
15107: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
15108: about classes, users, and resources.
15109:
15110: For many of these objects you can also use this to store data about
15111: them or modify them in various ways.
15112:
15113: =head2 Symbs
15114:
15115: To identify a specific instance of a resource, LON-CAPA uses symbols
15116: or "symbs"X<symb>. These identifiers are built from the URL of the
15117: map, the resource number of the resource in the map, and the URL of
15118: the resource itself. The latter is somewhat redundant, but might help
15119: if maps change.
15120:
15121: An example is
15122:
15123: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
15124:
15125: The respective map entry is
15126:
15127: <resource id="19" src="/res/msu/korte/tests/part12.problem"
15128: title="Problem 2">
15129: </resource>
15130:
15131: Symbs are used by the random number generator, as well as to store and
15132: restore data specific to a certain instance of for example a problem.
15133:
15134: =head2 Storing And Retrieving Data
15135:
15136: X<store()>X<cstore()>X<restore()>Three of the most important functions
15137: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
15138: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
15139: is is the non-critical message twin of cstore. These functions are for
15140: handlers to store a perl hash to a user's permanent data space in an
15141: easy manner, and to retrieve it again on another call. It is expected
15142: that a handler would use this once at the beginning to retrieve data,
15143: and then again once at the end to send only the new data back.
15144:
15145: The data is stored in the user's data directory on the user's
15146: homeserver under the ID of the course.
15147:
15148: The hash that is returned by restore will have all of the previous
15149: value for all of the elements of the hash.
15150:
15151: Example:
15152:
15153: #creating a hash
15154: my %hash;
15155: $hash{'foo'}='bar';
15156:
15157: #storing it
15158: &Apache::lonnet::cstore(\%hash);
15159:
15160: #changing a value
15161: $hash{'foo'}='notbar';
15162:
15163: #adding a new value
15164: $hash{'bar'}='foo';
15165: &Apache::lonnet::cstore(\%hash);
15166:
15167: #retrieving the hash
15168: my %history=&Apache::lonnet::restore();
15169:
15170: #print the hash
15171: foreach my $key (sort(keys(%history))) {
15172: print("\%history{$key} = $history{$key}");
15173: }
15174:
15175: Will print out:
15176:
15177: %history{1:foo} = bar
15178: %history{1:keys} = foo:timestamp
15179: %history{1:timestamp} = 990455579
15180: %history{2:bar} = foo
15181: %history{2:foo} = notbar
15182: %history{2:keys} = foo:bar:timestamp
15183: %history{2:timestamp} = 990455580
15184: %history{bar} = foo
15185: %history{foo} = notbar
15186: %history{timestamp} = 990455580
15187: %history{version} = 2
15188:
15189: Note that the special hash entries C<keys>, C<version> and
15190: C<timestamp> were added to the hash. C<version> will be equal to the
15191: total number of versions of the data that have been stored. The
15192: C<timestamp> attribute will be the UNIX time the hash was
15193: stored. C<keys> is available in every historical section to list which
15194: keys were added or changed at a specific historical revision of a
15195: hash.
15196:
15197: B<Warning>: do not store the hash that restore returns directly. This
15198: will cause a mess since it will restore the historical keys as if the
15199: were new keys. I.E. 1:foo will become 1:1:foo etc.
15200:
15201: Calling convention:
15202:
15203: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
15204: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$laststore);
15205:
15206: For more detailed information, see lonnet specific documentation.
15207:
15208: =head1 RETURN MESSAGES
15209:
15210: =over 4
15211:
15212: =item * B<con_lost>: unable to contact remote host
15213:
15214: =item * B<con_delayed>: unable to contact remote host, message will be delivered
15215: when the connection is brought back up
15216:
15217: =item * B<con_failed>: unable to contact remote host and unable to save message
15218: for later delivery
15219:
15220: =item * B<error:>: an error a occurred, a description of the error follows the :
15221:
15222: =item * B<no_such_host>: unable to fund a host associated with the user/domain
15223: that was requested
15224:
15225: =back
15226:
15227: =head1 PUBLIC SUBROUTINES
15228:
15229: =head2 Session Environment Functions
15230:
15231: =over 4
15232:
15233: =item *
15234: X<appenv()>
15235: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
15236: the user envirnoment file, and will be restored for each access this
15237: user makes during this session, also modifies the %env for the current
15238: process. Optional rolesarrayref - if defined contains a reference to an array
15239: of roles which are exempt from the restriction on modifying user.role entries
15240: in the user's environment.db and in %env.
15241:
15242: =item *
15243: X<delenv()>
15244: B<delenv($delthis,$regexp)>: removes all items from the session
15245: environment file that begin with $delthis. If the
15246: optional second arg - $regexp - is true, $delthis is treated as a
15247: regular expression, otherwise \Q$delthis\E is used.
15248: The values are also deleted from the current processes %env.
15249:
15250: =item * get_env_multiple($name)
15251:
15252: gets $name from the %env hash, it seemlessly handles the cases where multiple
15253: values may be defined and end up as an array ref.
15254:
15255: returns an array of values
15256:
15257: =back
15258:
15259: =head2 User Information
15260:
15261: =over 4
15262:
15263: =item *
15264: X<queryauthenticate()>
15265: B<queryauthenticate($uname,$udom)>: try to determine user's current
15266: authentication scheme
15267:
15268: =item *
15269: X<authenticate()>
15270: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
15271: authenticate user from domain's lib servers (first use the current
15272: one). C<$upass> should be the users password.
15273: $checkdefauth is optional (value is 1 if a check should be made to
15274: authenticate user using default authentication method, and allow
15275: account creation if username does not have account in the domain).
15276: $clientcancheckhost is optional (value is 1 if checking whether the
15277: server can host will occur on the client side in lonauth.pm).
15278:
15279: =item *
15280: X<homeserver()>
15281: B<homeserver($uname,$udom)>: find the server which has
15282: the user's directory and files (there must be only one), this caches
15283: the answer, and also caches if there is a borken connection.
15284:
15285: =item *
15286: X<idget()>
15287: B<idget($udom,$idsref,$namespace)>: find the usernames behind either
15288: a list of student/employee IDs or clicker IDs
15289: (student/employee IDs are a unique resource in a domain, there must be
15290: only 1 ID per username, and only 1 username per ID in a specific domain).
15291: clickerIDs are not necessarily unique, as students might share clickers.
15292: (returns hash: id=>name,id=>name)
15293:
15294: =item *
15295: X<idrget()>
15296: B<idrget($udom,@unames)>: find the IDs behind a list of
15297: usernames (returns hash: name=>id,name=>id)
15298:
15299: =item *
15300: X<idput()>
15301: B<idput($udom,$idsref,$uhome,$namespace)>: store away a list of
15302: names and associated student/employee IDs or clicker IDs.
15303:
15304: =item *
15305: X<iddel()>
15306: B<iddel($udom,$idshashref,$uhome,$namespace)>: delete unwanted
15307: student/employee ID or clicker ID username look-ups from domain.
15308: The homeserver ($uhome) and namespace ($namespace) are optional.
15309: If no $uhome is provided, it will be determined usig &homeserver()
15310: for each user. If no $namespace is provided, the default is ids.
15311:
15312: =item *
15313: X<updateclickers()>
15314: B<updateclickers($udom,$action,$idshashref,$uhome,$critical)>: update
15315: clicker ID-to-username look-ups in clickers.db on library server.
15316: Permitted actions are add or del (i.e., add or delete). The
15317: clickers.db contains clickerID as keys (escaped), and each corresponding
15318: value is an escaped comma-separated list of usernames (for whom the
15319: library server is the homeserver), who registered that particular ID.
15320: If $critical is true, the update will be sent via &critical, otherwise
15321: &reply() will be used.
15322:
15323: =item *
15324: X<rolesinit()>
15325: B<rolesinit($udom,$username)>: get user privileges.
15326: returns user role, first access and timer interval hashes
15327:
15328: =item *
15329: X<privileged()>
15330: B<privileged($username,$domain)>: returns a true if user has a
15331: privileged and active role (i.e. su or dc), false otherwise.
15332:
15333: =item *
15334: X<getsection()>
15335: B<getsection($udom,$uname,$cname)>: finds the section of student in the
15336: course $cname, return section name/number or '' for "not in course"
15337: and '-1' for "no section"
15338:
15339: =item *
15340: X<userenvironment()>
15341: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
15342: passed in @what from the requested user's environment, returns a hash
15343:
15344: =item *
15345: X<userlog_query()>
15346: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
15347: activity.log file. %filters defines filters applied when parsing the
15348: log file. These can be start or end timestamps, or the type of action
15349: - log to look for Login or Logout events, check for Checkin or
15350: Checkout, role for role selection. The response is in the form
15351: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
15352: escaped strings of the action recorded in the activity.log file.
15353:
15354: =back
15355:
15356: =head2 User Roles
15357:
15358: =over 4
15359:
15360: =item *
15361:
15362: allowed($priv,$uri,$symb,$role,$clientip,$noblockcheck) : check for a user privilege;
15363: returns codes for allowed actions.
15364:
15365: The first argument is required, all others are optional.
15366:
15367: $priv is the privilege being checked.
15368: $uri contains additional information about what is being checked for access (e.g.,
15369: URL, course ID etc.).
15370: $symb is the unique resource instance identifier in a course; if needed,
15371: but not provided, it will be retrieved via a call to &symbread().
15372: $role is the role for which a priv is being checked (only used if priv is evb).
15373: $clientip is the user's IP address (only used when checking for access to portfolio
15374: files).
15375: $noblockcheck, if true, skips calls to &has_comm_blocking() for the bre priv. This
15376: prevents recursive calls to &allowed.
15377:
15378: F: full access
15379: U,I,K: authentication modes (cxx only)
15380: '': forbidden
15381: 1: user needs to choose course
15382: 2: browse allowed
15383: A: passphrase authentication needed
15384: B: access temporarily blocked because of a blocking event in a course.
15385: D: access blocked because access is required via session initiated via deep-link
15386:
15387: =item *
15388:
15389: constructaccess($url,$setpriv) : check for access to construction space URL
15390:
15391: See if the owner domain and name in the URL match those in the
15392: expected environment. If so, return three element list
15393: ($ownername,$ownerdomain,$ownerhome).
15394:
15395: Otherwise return the null string.
15396:
15397: If second argument 'setpriv' is true, it assigns the privileges,
15398: and returns the same three element list, unless the owner has
15399: blocked "ad hoc" Domain Coordinator access to the Author Space,
15400: in which case the null string is returned.
15401:
15402: =item *
15403:
15404: definerole($rolename,$sysrole,$domrole,$courole,$uname,$udom) : define role;
15405: define a custom role rolename set privileges in format of lonTabs/roles.tab
15406: for system, domain, and course level. $uname and $udom are optional (current
15407: user's username and domain will be used when either of $uname or $udom are absent.
15408:
15409: =item *
15410:
15411: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
15412: (rolesplain.tab); plain text explanation of a user role term.
15413: $type is Course (default) or Community.
15414: If $forcedefault evaluates to true, text returned will be default
15415: text for $type. Otherwise, if this is a course, the text returned
15416: will be a custom name for the role (if defined in the course's
15417: environment). If no custom name is defined the default is returned.
15418:
15419: =item *
15420:
15421: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
15422: All arguments are optional. Returns a hash of a roles, either for
15423: co-author/assistant author roles for a user's Construction Space
15424: (default), or if $context is 'userroles', roles for the user himself,
15425: In the hash, keys are set to colon-separated $uname,$udom,$role, and
15426: (optionally) if $withsec is true, a fourth colon-separated item - $section.
15427: For each key, value is set to colon-separated start and end times for
15428: the role. If no username and domain are specified, will default to
15429: current user/domain. Types, roles, and roledoms are references to arrays
15430: of role statuses (active, future or previous), roles
15431: (e.g., cc,in, st etc.) and domains of the roles which can be used
15432: to restrict the list of roles reported. If no array ref is
15433: provided for types, will default to return only active roles.
15434:
15435: =item *
15436:
15437: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
15438: user: $uname:$udom has a role in the course: $cdom_$cnum.
15439:
15440: Additional optional arguments are: $type (if role checking is to be restricted
15441: to certain user status types -- previous (expired roles), active (currently
15442: available roles) or future (roles available in the future), and
15443: $hideprivileged -- if true will not report course roles for users who
15444: have active Domain Coordinator role in course's domain or in additional
15445: domains (specified in 'Domains to check for privileged users' in course
15446: environment -- set via: Course Settings -> Classlists and staff listing).
15447:
15448: =item *
15449:
15450: privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
15451: $username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
15452: $possdomains and $possroles are optional array refs -- to domains to check and
15453: roles to check. If $possdomains is not specified, a dump will be done of the
15454: users' roles.db to check for a dc or su role in any domain. This can be
15455: time consuming if &privileged is called repeatedly (e.g., when displaying a
15456: classlist), so in such cases, supplying a $possdomains array is preferred, as
15457: this then allows &privileged_by_domain() to be used, which caches the identity
15458: of privileged users, eliminating the need for repeated calls to &dump().
15459:
15460: =item *
15461:
15462: privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
15463: where the outer hash keys are domains specified in the $possdomains array ref,
15464: next inner hash keys are privileged roles specified in the $roles array ref,
15465: and the innermost hash contains key = value pairs for username:domain = end:start
15466: for active or future "privileged" users with that role in that domain. To avoid
15467: repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
15468: innerhash are cached using priv_$role and $dom as the identifiers.
15469:
15470: =back
15471:
15472: =head2 User Modification
15473:
15474: =over 4
15475:
15476: =item *
15477:
15478: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
15479: user for the level given by URL. Optional start and end dates (leave empty
15480: string or zero for "no date")
15481:
15482: =item *
15483:
15484: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
15485: change a users, password, possible return values are: ok,
15486: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
15487: refused
15488:
15489: =item *
15490:
15491: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
15492:
15493: =item *
15494:
15495: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
15496: $forceid,$desiredhome,$email,$inststatus,$candelete) :
15497:
15498: will update user information (firstname,middlename,lastname,generation,
15499: permanentemail), and if forceid is true, student/employee ID also.
15500: A user's institutional affiliation(s) can also be updated.
15501: User information fields will not be overwritten with empty entries
15502: unless the field is included in the $candelete array reference.
15503: This array is included when a single user is modified via "Manage Users",
15504: or when Autoupdate.pl is run by cron in a domain.
15505:
15506: =item *
15507:
15508: modifystudent
15509:
15510: modify a student's enrollment and identification information.
15511: The course id is resolved based on the current user's environment.
15512: This means the invoking user must be a course coordinator or otherwise
15513: associated with a course.
15514:
15515: This call is essentially a wrapper for lonnet::modifyuser and
15516: lonnet::modify_student_enrollment
15517:
15518: Inputs:
15519:
15520: =over 4
15521:
15522: =item B<$udom> Student's loncapa domain
15523:
15524: =item B<$uname> Student's loncapa login name
15525:
15526: =item B<$uid> Student/Employee ID
15527:
15528: =item B<$umode> Student's authentication mode
15529:
15530: =item B<$upass> Student's password
15531:
15532: =item B<$first> Student's first name
15533:
15534: =item B<$middle> Student's middle name
15535:
15536: =item B<$last> Student's last name
15537:
15538: =item B<$gene> Student's generation
15539:
15540: =item B<$usec> Student's section in course
15541:
15542: =item B<$end> Unix time of the roles expiration
15543:
15544: =item B<$start> Unix time of the roles start date
15545:
15546: =item B<$forceid> If defined, allow $uid to be changed
15547:
15548: =item B<$desiredhome> server to use as home server for student
15549:
15550: =item B<$email> Student's permanent e-mail address
15551:
15552: =item B<$type> Type of enrollment (auto or manual)
15553:
15554: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
15555:
15556: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
15557:
15558: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
15559:
15560: =item B<$context> role change context (shown in User Management Logs display in a course)
15561:
15562: =item B<$inststatus> institutional status of user - : separated string of escaped status types
15563:
15564: =item B<$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.
15565:
15566: =back
15567:
15568: =item *
15569:
15570: modify_student_enrollment
15571:
15572: Change a student's enrollment status in a class. The environment variable
15573: 'role.request.course' must be defined for this function to proceed.
15574:
15575: Inputs:
15576:
15577: =over 4
15578:
15579: =item $udom, student's domain
15580:
15581: =item $uname, student's name
15582:
15583: =item $uid, student's user id
15584:
15585: =item $first, student's first name
15586:
15587: =item $middle
15588:
15589: =item $last
15590:
15591: =item $gene
15592:
15593: =item $usec
15594:
15595: =item $end
15596:
15597: =item $start
15598:
15599: =item $type
15600:
15601: =item $locktype
15602:
15603: =item $cid
15604:
15605: =item $selfenroll
15606:
15607: =item $context
15608:
15609: =item $credits, number of credits student will earn from this class
15610:
15611: =item $instsec, institutional course section code for student
15612:
15613: =back
15614:
15615:
15616: =item *
15617:
15618: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
15619: custom role; give a custom role to a user for the level given by URL. Specify
15620: name and domain of role author, and role name
15621:
15622: =item *
15623:
15624: revokerole($udom,$uname,$url,$role) : revoke a role for url
15625:
15626: =item *
15627:
15628: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
15629:
15630: =back
15631:
15632: =head2 Course Infomation
15633:
15634: =over 4
15635:
15636: =item *
15637:
15638: coursedescription($courseid,$options) : returns a hash of information about the
15639: specified course id, including all environment settings for the
15640: course, the description of the course will be in the hash under the
15641: key 'description'
15642:
15643: $options is an optional parameter that if supplied is a hash reference that controls
15644: what how this function works. It has the following key/values:
15645:
15646: =over 4
15647:
15648: =item freshen_cache
15649:
15650: If defined, and the environment cache for the course is valid, it is
15651: returned in the returned hash.
15652:
15653: =item one_time
15654:
15655: If defined, the last cache time is set to _now_
15656:
15657: =item user
15658:
15659: If defined, the supplied username is used instead of the current user.
15660:
15661:
15662: =back
15663:
15664: =item *
15665:
15666: resdata($name,$domain,$type,@which) : request for current parameter
15667: setting for a specific $type, where $type is either 'course' or 'user',
15668: @what should be a list of parameters to ask about. This routine caches
15669: answers for 10 minutes.
15670:
15671: =item *
15672:
15673: get_courseresdata($courseid, $domain) : dump the entire course resource
15674: data base, returning a hash that is keyed by the resource name and has
15675: values that are the resource value. I believe that the timestamps and
15676: versions are also returned.
15677:
15678: get_numsuppfiles($cnum,$cdom) : retrieve number of files in a course's
15679: supplemental content area. This routine caches the number of files for
15680: 10 minutes.
15681:
15682: =back
15683:
15684: =head2 Course Modification
15685:
15686: =over 4
15687:
15688: =item *
15689:
15690: writecoursepref($courseid,%prefs) : write preferences (environment
15691: database) for a course
15692:
15693: =item *
15694:
15695: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
15696:
15697: =item *
15698:
15699: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
15700:
15701: =item *
15702:
15703: is_course($courseid), is_course($cdom, $cnum)
15704:
15705: Accepts either a combined $courseid (in the form of domain_courseid) or the
15706: two component version $cdom, $cnum. It checks if the specified course exists.
15707:
15708: Returns:
15709: undef if the course doesn't exist, otherwise
15710: in scalar context the combined courseid.
15711: in list context the two components of the course identifier, domain and
15712: courseid.
15713:
15714: =back
15715:
15716: =head2 Bubblesheet Configuration
15717:
15718: =over 4
15719:
15720: =item *
15721:
15722: get_scantron_config($which)
15723:
15724: $which - the name of the configuration to parse from the file.
15725:
15726: Parses and returns the bubblesheet configuration line selected as a
15727: hash of configuration file fields.
15728:
15729:
15730: Returns:
15731: If the named configuration is not in the file, an empty
15732: hash is returned.
15733:
15734: a hash with the fields
15735: name - internal name for the this configuration setup
15736: description - text to display to operator that describes this config
15737: CODElocation - if 0 or the string 'none'
15738: - no CODE exists for this config
15739: if -1 || the string 'letter'
15740: - a CODE exists for this config and is
15741: a string of letters
15742: Unsupported value (but planned for future support)
15743: if a positive integer
15744: - The CODE exists as the first n items from
15745: the question section of the form
15746: if the string 'number'
15747: - The CODE exists for this config and is
15748: a string of numbers
15749: CODEstart - (only matter if a CODE exists) column in the line where
15750: the CODE starts
15751: CODElength - length of the CODE
15752: IDstart - column where the student/employee ID starts
15753: IDlength - length of the student/employee ID info
15754: Qstart - column where the information from the bubbled
15755: 'questions' start
15756: Qlength - number of columns comprising a single bubble line from
15757: the sheet. (usually either 1 or 10)
15758: Qon - either a single character representing the character used
15759: to signal a bubble was chosen in the positional setup, or
15760: the string 'letter' if the letter of the chosen bubble is
15761: in the final, or 'number' if a number representing the
15762: chosen bubble is in the file (1->A 0->J)
15763: Qoff - the character used to represent that a bubble was
15764: left blank
15765: PaperID - if the scanning process generates a unique number for each
15766: sheet scanned the column that this ID number starts in
15767: PaperIDlength - number of columns that comprise the unique ID number
15768: for the sheet of paper
15769: FirstName - column that the first name starts in
15770: FirstNameLength - number of columns that the first name spans
15771: LastName - column that the last name starts in
15772: LastNameLength - number of columns that the last name spans
15773: BubblesPerRow - number of bubbles available in each row used to
15774: bubble an answer. (If not specified, 10 assumed).
15775:
15776:
15777: =item *
15778:
15779: get_scantronformat_file($cdom)
15780:
15781: $cdom - the course's domain (optional); if not supplied, uses
15782: domain for current $env{'request.course.id'}.
15783:
15784: Returns an array containing lines from the scantron format file for
15785: the domain of the course.
15786:
15787: If a url for a custom.tab file is listed in domain's configuration.db,
15788: lines are from this file.
15789:
15790: Otherwise, if a default.tab has been published in RES space by the
15791: domainconfig user, lines are from this file.
15792:
15793: Otherwise, fall back to getting lines from the legacy file on the
15794: local server: /home/httpd/lonTabs/default_scantronformat.tab
15795:
15796: =back
15797:
15798: =head2 Resource Subroutines
15799:
15800: =over 4
15801:
15802: =item *
15803:
15804: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
15805:
15806: =item *
15807:
15808: repcopy($filename) : subscribes to the requested file, and attempts to
15809: replicate from the owning library server, Might return
15810: 'unavailable', 'not_found', 'forbidden', 'ok', or
15811: 'bad_request', also attempts to grab the metadata for the
15812: resource. Expects the local filesystem pathname
15813: (/home/httpd/html/res/....)
15814:
15815: =back
15816:
15817: =head2 Resource Information
15818:
15819: =over 4
15820:
15821: =item *
15822:
15823: EXT($varname,$symb,$udom,$uname,$usection,$recurse,$cid) : evaluates
15824: and returns the value of a variety of different possible values,
15825: $varname should be a request string, and the other parameters can be
15826: used to specify who and what one is asking about. Ordinarily, $cid
15827: does not need to be specified, as it is retrived from
15828: $env{'request.course.id'}, but &Apache::lonnet::EXT() is called
15829: within lonuserstate::loadmap() when initializing a course, before
15830: $env{'request.course.id'} has been set, so it needs to be provided
15831: in that one case.
15832:
15833: Possible values for $varname are environment.lastname (or other item
15834: from the envirnment hash), user.name (or someother aspect about the
15835: user), resource.0.maxtries (or some other part and parameter of a
15836: resource)
15837:
15838: =item *
15839:
15840: directcondval($number) : get current value of a condition; reads from a state
15841: string
15842:
15843: =item *
15844:
15845: condval($condidx) : value of condition index based on state
15846:
15847: =item *
15848:
15849: metadata($uri,$what,$toolsymb,$liburi,$prefix,$depthcount) : request a
15850: resource's metadata, $what should be either a specific key, or either
15851: 'keys' (to get a list of possible keys) or 'packages' to get a list of
15852: packages that this resource currently uses, the last 3 arguments are
15853: only used internally for recursive metadata.
15854:
15855: the toolsymb is only used where the uri is for an external tool (for which
15856: the uri as well as the symb are guaranteed to be unique).
15857:
15858: this function automatically caches all requests except any made recursively
15859: to retrieve a list of metadata keys for an imported library file ($liburi is
15860: defined).
15861:
15862: =item *
15863:
15864: metadata_query($query,$custom,$customshow) : make a metadata query against the
15865: network of library servers; returns file handle of where SQL and regex results
15866: will be stored for query
15867:
15868: =item *
15869:
15870: symbread($filename,$donotrecurse,$ignorecachednull,$checkforblock,$possibles) :
15871: return symbolic list entry (all arguments optional).
15872:
15873: Args: filename is the filename (including path) for the file for which a symb
15874: is required; donotrecurse, if true will prevent calls to allowed() being made
15875: to check access status if more than one resource was found in the bighash
15876: (see rev. 1.249) to avoid an infinite loop if an ambiguous resource is part of
15877: a randompick); ignorecachednull, if true will prevent a symb of '' being
15878: returned if $env{$cache_str} is defined as ''; checkforblock if true will
15879: cause possible symbs to be checked to determine if they are subject to content
15880: blocking, if so they will not be included as possible symbs; possibles is a
15881: ref to a hash, which, as a side effect, will be populated with all possible
15882: symbs (content blocking not tested).
15883:
15884: returns the data handle
15885:
15886: =item *
15887:
15888: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
15889: and is a possible symb for the URL in $thisfn, and if is an encrypted
15890: resource that the user accessed using /enc/ returns a 1 on success, 0
15891: on failure, user must be in a course, as it assumes the existence of
15892: the course initial hash, and uses $env('request.course.id'}. The third
15893: arg is an optional reference to a scalar. If this arg is passed in the
15894: call to symbverify, it will be set to 1 if the symb has been set to be
15895: encrypted; otherwise it will be null.
15896:
15897: =item *
15898:
15899: symbclean($symb) : removes versions numbers from a symb, returns the
15900: cleaned symb
15901:
15902: =item *
15903:
15904: is_on_map($uri) : checks if the $uri is somewhere on the current
15905: course map, user must be in a course for it to work.
15906:
15907: =item *
15908:
15909: numval($salt) : return random seed value (addend for rndseed)
15910:
15911: =item *
15912:
15913: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
15914: a random seed, all arguments are optional, if they aren't sent it uses the
15915: environment to derive them. Note: if symb isn't sent and it can't get one
15916: from &symbread it will use the current time as its return value
15917:
15918: =item *
15919:
15920: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
15921: unfakeable, receipt
15922:
15923: =item *
15924:
15925: receipt() : API to ireceipt working off of env values; given out to users
15926:
15927: =item *
15928:
15929: countacc($url) : count the number of accesses to a given URL
15930:
15931: =item *
15932:
15933: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
15934:
15935: =item *
15936:
15937: checkin($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 $tcrsid)
15938:
15939: =item *
15940:
15941: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
15942:
15943: =item *
15944:
15945: devalidate($symb) : devalidate temporary spreadsheet calculations,
15946: forcing spreadsheet to reevaluate the resource scores next time.
15947:
15948: =item *
15949:
15950: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
15951: when viewing in course context.
15952:
15953: input: six args -- filename (decluttered), course number, course domain,
15954: url, symb (if registered) and group (if this is a
15955: group item -- e.g., bulletin board, group page etc.).
15956:
15957: output: array of five scalars --
15958: $cfile -- url for file editing if editable on current server
15959: $home -- homeserver of resource (i.e., for author if published,
15960: or course if uploaded.).
15961: $switchserver -- 1 if server switch will be needed.
15962: $forceedit -- 1 if icon/link should be to go to edit mode
15963: $forceview -- 1 if icon/link should be to go to view mode
15964:
15965: =item *
15966:
15967: is_course_upload($file,$cnum,$cdom)
15968:
15969: Used in course context to determine if current file was uploaded to
15970: the course (i.e., would be found in /userfiles/docs on the course's
15971: homeserver.
15972:
15973: input: 3 args -- filename (decluttered), course number and course domain.
15974: output: boolean -- 1 if file was uploaded.
15975:
15976: =back
15977:
15978: =head2 Storing/Retreiving Data
15979:
15980: =over 4
15981:
15982: =item *
15983:
15984: store($storehash,$symb,$namespace,$udom,$uname,$laststore) : stores hash
15985: permanently for this url; hashref needs to be given and should be a \%hashname;
15986: the remaining args aren't required and if they aren't passed or are '' they will
15987: be derived from the env (with the exception of $laststore, which is an
15988: optional arg used when a user's submission is stored in grading).
15989: $laststore is $version=$timestamp, where $version is the most recent version
15990: number retrieved for the corresponding $symb in the $namespace db file, and
15991: $timestamp is the timestamp for that transaction (UNIX time).
15992: $laststore is currently only passed when cstore() is called by
15993: structuretags::finalize_storage().
15994:
15995: =item *
15996:
15997: cstore($storehash,$symb,$namespace,$udom,$uname,$laststore) : same as store
15998: but uses critical subroutine
15999:
16000: =item *
16001:
16002: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
16003: all args are optional
16004:
16005: =item *
16006:
16007: dumpstore($namespace,$udom,$uname,$regexp,$range) :
16008: dumps the complete (or key matching regexp) namespace into a hash
16009: ($udom, $uname, $regexp, $range are optional) for a namespace that is
16010: normally &store()ed into
16011:
16012: $range should be either an integer '100' (give me the first 100
16013: matching records)
16014: or be two integers sperated by a - with no spaces
16015: '30-50' (give me the 30th through the 50th matching
16016: records)
16017:
16018:
16019: =item *
16020:
16021: putstore($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog) :
16022: replaces a &store() version of data with a replacement set of data
16023: for a particular resource in a namespace passed in the $storehash hash
16024: reference. If $tolog is true, the transaction is logged in the courselog
16025: with an action=PUTSTORE.
16026:
16027: =item *
16028:
16029: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
16030: works very similar to store/cstore, but all data is stored in a
16031: temporary location and can be reset using tmpreset, $storehash should
16032: be a hash reference, returns nothing on success
16033:
16034: =item *
16035:
16036: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
16037: similar to restore, but all data is stored in a temporary location and
16038: can be reset using tmpreset. Returns a hash of values on success,
16039: error string otherwise.
16040:
16041: =item *
16042:
16043: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
16044: deltes all keys for $symb form the temporary storage hash.
16045:
16046: =item *
16047:
16048: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
16049: reference filled in from namesp ($udom and $uname are optional)
16050:
16051: =item *
16052:
16053: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
16054: namesp ($udom and $uname are optional)
16055:
16056: =item *
16057:
16058: dump($namespace,$udom,$uname,$regexp,$range) :
16059: dumps the complete (or key matching regexp) namespace into a hash
16060: ($udom, $uname, $regexp, $range are optional)
16061:
16062: $range should be either an integer '100' (give me the first 100
16063: matching records)
16064: or be two integers sperated by a - with no spaces
16065: '30-50' (give me the 30th through the 50th matching
16066: records)
16067: =item *
16068:
16069: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
16070: $store can be a scalar, an array reference, or if the amount to be
16071: incremented is > 1, a hash reference.
16072:
16073: ($udom and $uname are optional)
16074:
16075: =item *
16076:
16077: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
16078: ($udom and $uname are optional)
16079:
16080: =item *
16081:
16082: cput($namespace,$storehash,$udom,$uname) : critical put
16083: ($udom and $uname are optional)
16084:
16085: =item *
16086:
16087: newput($namespace,$storehash,$udom,$uname) :
16088:
16089: Attempts to store the items in the $storehash, but only if they don't
16090: currently exist, if this succeeds you can be certain that you have
16091: successfully created a new key value pair in the $namespace db.
16092:
16093:
16094: Args:
16095: $namespace: name of database to store values to
16096: $storehash: hashref to store to the db
16097: $udom: (optional) domain of user containing the db
16098: $uname: (optional) name of user caontaining the db
16099:
16100: Returns:
16101: 'ok' -> succeeded in storing all keys of $storehash
16102: 'key_exists: <key>' -> failed to anything out of $storehash, as at
16103: least <key> already existed in the db (other
16104: requested keys may also already exist)
16105: 'error: <msg>' -> unable to tie the DB or other error occurred
16106: 'con_lost' -> unable to contact request server
16107: 'refused' -> action was not allowed by remote machine
16108:
16109:
16110: =item *
16111:
16112: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
16113: reference filled in from namesp (encrypts the return communication)
16114: ($udom and $uname are optional)
16115:
16116: =item *
16117:
16118: log($udom,$name,$home,$message) : write to permanent log for user; use
16119: critical subroutine
16120:
16121: =item *
16122:
16123: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
16124: array reference filled in from namespace found in domain level on either
16125: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
16126:
16127: =item *
16128:
16129: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
16130: domain level either on specified domain server ($uhome) or primary domain
16131: server ($udom and $uhome are optional)
16132:
16133: =item *
16134:
16135: get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults
16136: for: authentication, language, quotas, timezone, date locale, and portal URL in
16137: the target domain.
16138:
16139: May also include additional key => value pairs for the following groups:
16140:
16141: =over
16142:
16143: =item
16144: disk quotas (MB allocated by default to portfolios and authoring spaces).
16145:
16146: =over
16147:
16148: =item defaultquota, authorquota
16149:
16150: =back
16151:
16152: =item
16153: tools (availability of aboutme page, blog, webDAV access for authoring spaces,
16154: portfolio for users).
16155:
16156: =over
16157:
16158: =item
16159: aboutme, blog, webdav, portfolio
16160:
16161: =back
16162:
16163: =item
16164: requestcourses: ability to request courses, and how requests are processed.
16165:
16166: =over
16167:
16168: =item
16169: official, unofficial, community, textbook, placement
16170:
16171: =back
16172:
16173: =item
16174: inststatus: types of institutional affiliation, and order in which they are displayed.
16175:
16176: =over
16177:
16178: =item
16179: inststatustypes, inststatusorder, inststatusguest
16180:
16181: =back
16182:
16183: =item
16184: coursedefaults: can PDF forms can be created, default credits for courses, default quotas (MB)
16185: for course's uploaded content.
16186:
16187: =over
16188:
16189: =item
16190: canuse_pdfforms, officialcredits, unofficialcredits, textbookcredits, officialquota, unofficialquota,
16191: communityquota, textbookquota, placementquota
16192:
16193: =back
16194:
16195: =item
16196: usersessions: set options for hosting of your users in other domains, and hosting of users from other domains
16197: on your servers.
16198:
16199: =over
16200:
16201: =item
16202: remotesessions, hostedsessions
16203:
16204: =back
16205:
16206: =back
16207:
16208: In cases where a domain coordinator has never used the "Set Domain Configuration"
16209: utility to create a configuration.db file on a domain's primary library server
16210: only the following domain defaults: auth_def, auth_arg_def, lang_def
16211: -- corresponding values are authentication type (internal, krb4, krb5,
16212: or localauth), initial password or a kerberos realm, language (e.g., en-us) --
16213: will be available. Values are retrieved from cache (if current), unless the
16214: optional $ignore_cache arg is true, or from domain's configuration.db (if available),
16215: or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab.
16216:
16217: Typical usage:
16218:
16219: %domdefaults = &get_domain_defaults($target_domain);
16220:
16221: =back
16222:
16223: =head2 Network Status Functions
16224:
16225: =over 4
16226:
16227: =item *
16228:
16229: dirlist() : return directory list based on URI (first arg).
16230:
16231: Inputs: 1 required, 5 optional.
16232:
16233: =over
16234:
16235: =item
16236: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
16237:
16238: =item
16239: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
16240:
16241: =item
16242: $username - username of user/course to be listed. Extracted from $uri if absent.
16243:
16244: =item
16245: $getpropath - boolean: 1 if prepend path using &propath().
16246:
16247: =item
16248: $getuserdir - boolean: 1 if prepend path for "userfiles".
16249:
16250: =item
16251: $alternateRoot - path to prepend in place of path from $uri.
16252:
16253: =back
16254:
16255: Returns: Array of up to two items.
16256:
16257: =over
16258:
16259: a reference to an array of files/subdirectories
16260:
16261: =over
16262:
16263: Each element in the array of files/subdirectories is a & separated list of
16264: item name and the result of running stat on the item. If dirlist was requested
16265: for a file instead of a directory, the item name will be ''. For a directory
16266: listing, if the item is a metadata file, the element will end &N&M
16267: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
16268: default copyright set (1).
16269:
16270: =back
16271:
16272: a scalar containing error condition (if encountered).
16273:
16274: =over
16275:
16276: =item
16277: no_host (no homeserver identified for $username:$domain).
16278:
16279: =item
16280: no_such_host (server contacted for listing not identified as valid host).
16281:
16282: =item
16283: con_lost (connection to remote server failed).
16284:
16285: =item
16286: refused (invalid $username:$domain received on lond side).
16287:
16288: =item
16289: no_such_dir (directory at specified path on lond side does not exist).
16290:
16291: =item
16292: empty (directory at specified path on lond side is empty).
16293:
16294: =over
16295:
16296: This is currently not encountered because the &ls3, &ls2,
16297: &ls (_handler) routines on the lond side do not filter out
16298: . and .. from a directory listing.
16299:
16300: =back
16301:
16302: =back
16303:
16304: =back
16305:
16306: =item *
16307:
16308: spareserver() : find server with least workload from spare.tab
16309:
16310:
16311: =item *
16312:
16313: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
16314: if there is no corresponding loncapa host.
16315:
16316: =back
16317:
16318:
16319: =head2 Apache Request
16320:
16321: =over 4
16322:
16323: =item *
16324:
16325: ssi($url,%hash) : server side include, does a complete request cycle on url to
16326: localhost, posts hash
16327:
16328: =back
16329:
16330: =head2 Data to String to Data
16331:
16332: =over 4
16333:
16334: =item *
16335:
16336: hash2str(%hash) : convert a hash into a string complete with escaping and '='
16337: and '&' separators, supports elements that are arrayrefs and hashrefs
16338:
16339: =item *
16340:
16341: hashref2str($hashref) : convert a hashref into a string complete with
16342: escaping and '=' and '&' separators, supports elements that are
16343: arrayrefs and hashrefs
16344:
16345: =item *
16346:
16347: arrayref2str($arrayref) : convert an arrayref into a string complete
16348: with escaping and '&' separators, supports elements that are arrayrefs
16349: and hashrefs
16350:
16351: =item *
16352:
16353: str2hash($string) : convert string to hash using unescaping and
16354: splitting on '=' and '&', supports elements that are arrayrefs and
16355: hashrefs
16356:
16357: =item *
16358:
16359: str2array($string) : convert string to hash using unescaping and
16360: splitting on '&', supports elements that are arrayrefs and hashrefs
16361:
16362: =back
16363:
16364: =head2 Logging Routines
16365:
16366:
16367: These routines allow one to make log messages in the lonnet.log and
16368: lonnet.perm logfiles.
16369:
16370: =over 4
16371:
16372: =item *
16373:
16374: logtouch() : make sure the logfile, lonnet.log, exists
16375:
16376: =item *
16377:
16378: logthis() : append message to the normal lonnet.log file, it gets
16379: preiodically rolled over and deleted.
16380:
16381: =item *
16382:
16383: logperm() : append a permanent message to lonnet.perm.log, this log
16384: file never gets deleted by any automated portion of the system, only
16385: messages of critical importance should go in here.
16386:
16387:
16388: =back
16389:
16390: =head2 General File Helper Routines
16391:
16392: =over 4
16393:
16394: =item *
16395:
16396: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
16397: (a) files in /uploaded
16398: (i) If a local copy of the file exists -
16399: compares modification date of local copy with last-modified date for
16400: definitive version stored on home server for course. If local copy is
16401: stale, requests a new version from the home server and stores it.
16402: If the original has been removed from the home server, then local copy
16403: is unlinked.
16404: (ii) If local copy does not exist -
16405: requests the file from the home server and stores it.
16406:
16407: If $caller is 'uploadrep':
16408: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
16409: for request for files originally uploaded via DOCS.
16410: - returns 'ok' if fresh local copy now available, -1 otherwise.
16411:
16412: Otherwise:
16413: This indicates a call from the content generation phase of the request.
16414: - returns the entire contents of the file or -1.
16415:
16416: (b) files in /res
16417: - returns the entire contents of a file or -1;
16418: it properly subscribes to and replicates the file if neccessary.
16419:
16420:
16421: =item *
16422:
16423: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
16424: reference
16425:
16426: returns either a stat() list of data about the file or an empty list
16427: if the file doesn't exist or couldn't find out about it (connection
16428: problems or user unknown)
16429:
16430: =item *
16431:
16432: filelocation($dir,$file) : returns file system location of a file
16433: based on URI; meant to be "fairly clean" absolute reference, $dir is a
16434: directory that relative $file lookups are to looked in ($dir of /a/dir
16435: and a file of ../bob will become /a/bob)
16436:
16437: =item *
16438:
16439: hreflocation($dir,$file) : returns file system location or a URL; same as
16440: filelocation except for hrefs
16441:
16442: =item *
16443:
16444: declutter() : declutters URLs -- remove beginning slashes, 'res' etc.
16445: also removes beginning /home/httpd/html unless /priv/ follows it.
16446:
16447: =back
16448:
16449: =head2 Usererfile file routines (/uploaded*)
16450:
16451: =over 4
16452:
16453: =item *
16454:
16455: userfileupload(): main rotine for putting a file in a user or course's
16456: filespace, arguments are,
16457:
16458: formname - required - this is the name of the element in $env where the
16459: filename, and the contents of the file to create/modifed exist
16460: the filename is in $env{'form.'.$formname.'.filename'} and the
16461: contents of the file is located in $env{'form.'.$formname}
16462: context - if coursedoc, store the file in the course of the active role
16463: of the current user;
16464: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
16465: if 'canceloverwrite': delete file in tmp/overwrites directory
16466: subdir - required - subdirectory to put the file in under ../userfiles/
16467: if undefined, it will be placed in "unknown"
16468:
16469: (This routine calls clean_filename() to remove any dangerous
16470: characters from the filename, and then calls finuserfileupload() to
16471: complete the transaction)
16472:
16473: returns either the url of the uploaded file (/uploaded/....) if successful
16474: and /adm/notfound.html if unsuccessful
16475:
16476: =item *
16477:
16478: clean_filename(): routine for cleaing a filename up for storage in
16479: userfile space, argument is:
16480:
16481: filename - proposed filename
16482:
16483: returns: the new clean filename
16484:
16485: =item *
16486:
16487: finishuserfileupload(): routine that creates and sends the file to
16488: userspace, probably shouldn't be called directly
16489:
16490: docuname: username or courseid of destination for the file
16491: docudom: domain of user/course of destination for the file
16492: formname: same as for userfileupload()
16493: fname: filename (including subdirectories) for the file
16494: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
16495: if hashref, and context is scantron, will convert csv format to standard format
16496: allfiles: reference to hash used to store objects found by parser
16497: codebase: reference to hash used for codebases of java objects found by parser
16498: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
16499: thumbheight: height (pixels) of thumbnail to be created for uploaded image
16500: resizewidth: width to be used to resize image using resizeImage from ImageMagick
16501: resizeheight: height to be used to resize image using resizeImage from ImageMagick
16502: context: if 'overwrite', will move the uploaded file from its temporary location to
16503: userfiles to facilitate overwriting a previously uploaded file with same name.
16504: mimetype: reference to scalar to accommodate mime type determined
16505: from File::MMagic if $parser = parse.
16506:
16507: returns either the url of the uploaded file (/uploaded/....) if successful
16508: and /adm/notfound.html if unsuccessful (or an error message if context
16509: was 'overwrite').
16510:
16511:
16512: =item *
16513:
16514: renameuserfile(): renames an existing userfile to a new name
16515:
16516: Args:
16517: docuname: username or courseid of destination for the file
16518: docudom: domain of user/course of destination for the file
16519: old: current file name (including any subdirs under userfiles)
16520: new: desired file name (including any subdirs under userfiles)
16521:
16522: =item *
16523:
16524: mkdiruserfile(): creates a directory is a userfiles dir
16525:
16526: Args:
16527: docuname: username or courseid of destination for the file
16528: docudom: domain of user/course of destination for the file
16529: dir: dir to create (including any subdirs under userfiles)
16530:
16531: =item *
16532:
16533: removeuserfile(): removes a file that exists in userfiles
16534:
16535: Args:
16536: docuname: username or courseid of destination for the file
16537: docudom: domain of user/course of destination for the file
16538: fname: filname to delete (including any subdirs under userfiles)
16539:
16540: =item *
16541:
16542: removeuploadedurl(): convience function for removeuserfile()
16543:
16544: Args:
16545: url: a full /uploaded/... url to delete
16546:
16547: =item *
16548:
16549: get_portfile_permissions():
16550: Args:
16551: domain: domain of user or course contain the portfolio files
16552: user: name of user or num of course contain the portfolio files
16553: Returns:
16554: hashref of a dump of the proper file_permissions.db
16555:
16556:
16557: =item *
16558:
16559: get_access_controls():
16560:
16561: Args:
16562: current_permissions: the hash ref returned from get_portfile_permissions()
16563: group: (optional) the group you want the files associated with
16564: file: (optional) the file you want access info on
16565:
16566: Returns:
16567: a hash (keys are file names) of hashes containing
16568: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
16569: values are XML containing access control settings (see below)
16570:
16571: Internal notes:
16572:
16573: access controls are stored in file_permissions.db as key=value pairs.
16574: key -> path to file/file_name\0uniqueID:scope_end_start
16575: where scope -> public,guest,course,group,domains or users.
16576: end -> UNIX time for end of access (0 -> no end date)
16577: start -> UNIX time for start of access
16578:
16579: value -> XML description of access control
16580: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
16581: <start></start>
16582: <end></end>
16583:
16584: <password></password> for scope type = guest
16585:
16586: <domain></domain> for scope type = course or group
16587: <number></number>
16588: <roles id="">
16589: <role></role>
16590: <access></access>
16591: <section></section>
16592: <group></group>
16593: </roles>
16594:
16595: <dom></dom> for scope type = domains
16596:
16597: <users> for scope type = users
16598: <user>
16599: <uname></uname>
16600: <udom></udom>
16601: </user>
16602: </users>
16603: </scope>
16604:
16605: Access data is also aggregated for each file in an additional key=value pair:
16606: key -> path to file/file_name\0accesscontrol
16607: value -> reference to hash
16608: hash contains key = value pairs
16609: where key = uniqueID:scope_end_start
16610: value = UNIX time record was last updated
16611:
16612: Used to improve speed of look-ups of access controls for each file.
16613:
16614: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
16615:
16616: =item *
16617:
16618: modify_access_controls():
16619:
16620: Modifies access controls for a portfolio file
16621: Args
16622: 1. file name
16623: 2. reference to hash of required changes,
16624: 3. domain
16625: 4. username
16626: where domain,username are the domain of the portfolio owner
16627: (either a user or a course)
16628:
16629: Returns:
16630: 1. result of additions or updates ('ok' or 'error', with error message).
16631: 2. result of deletions ('ok' or 'error', with error message).
16632: 3. reference to hash of any new or updated access controls.
16633: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
16634: key = integer (inbound ID)
16635: value = uniqueID
16636:
16637: =item *
16638:
16639: get_timebased_id():
16640:
16641: Attempts to get a unique timestamp-based suffix for use with items added to a
16642: course via the Course Editor (e.g., folders, composite pages,
16643: group bulletin boards).
16644:
16645: Args: (first three required; six others optional)
16646:
16647: 1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
16648: docssequence, or name of group
16649:
16650: 2. keyid (alphanumeric): name of temporary locking key in hash,
16651: e.g., num, boardids
16652:
16653: 3. namespace: name of gdbm file used to store suffixes already assigned;
16654: file will be named nohist_namespace.db
16655:
16656: 4. cdom: domain of course; default is current course domain from %env
16657:
16658: 5. cnum: course number; default is current course number from %env
16659:
16660: 6. idtype: set to concat if an additional digit is to be appended to the
16661: unix timestamp to form the suffix, if the plain timestamp is already
16662: in use. Default is to not do this, but simply increment the unix
16663: timestamp by 1 until a unique key is obtained.
16664:
16665: 7. who: holder of locking key; defaults to user:domain for user.
16666:
16667: 8. locktries: number of attempts to obtain a lock (sleep of 1s before
16668: retrying); default is 3.
16669:
16670: 9. maxtries: number of attempts to obtain a unique suffix; default is 20.
16671:
16672: Returns:
16673:
16674: 1. suffix obtained (numeric)
16675:
16676: 2. result of deleting locking key (ok if deleted, or lock never obtained)
16677:
16678: 3. error: contains (localized) error message if an error occurred.
16679:
16680:
16681: =back
16682:
16683: =head2 HTTP Helper Routines
16684:
16685: =over 4
16686:
16687: =item *
16688:
16689: escape() : unpack non-word characters into CGI-compatible hex codes
16690:
16691: =item *
16692:
16693: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
16694:
16695: =back
16696:
16697: =head1 PRIVATE SUBROUTINES
16698:
16699: =head2 Underlying communication routines (Shouldn't call)
16700:
16701: =over 4
16702:
16703: =item *
16704:
16705: subreply() : tries to pass a message to lonc, returns con_lost if incapable
16706:
16707: =item *
16708:
16709: reply() : uses subreply to send a message to remote machine, logs all failures
16710:
16711: =item *
16712:
16713: critical() : passes a critical message to another server; if cannot
16714: get through then place message in connection buffer directory and
16715: returns con_delayed, if incapable of saving message, returns
16716: con_failed
16717:
16718: =item *
16719:
16720: reconlonc() : tries to reconnect lonc client processes.
16721:
16722: =back
16723:
16724: =head2 Resource Access Logging
16725:
16726: =over 4
16727:
16728: =item *
16729:
16730: flushcourselogs() : flush (save) buffer logs and access logs
16731:
16732: =item *
16733:
16734: courselog($what) : save message for course in hash
16735:
16736: =item *
16737:
16738: courseacclog($what) : save message for course using &courselog(). Perform
16739: special processing for specific resource types (problems, exams, quizzes, etc).
16740:
16741: =item *
16742:
16743: goodbye() : flush course logs and log shutting down; it is called in srm.conf
16744: as a PerlChildExitHandler
16745:
16746: =back
16747:
16748: =head2 Other
16749:
16750: =over 4
16751:
16752: =item *
16753:
16754: symblist($mapname,%newhash) : update symbolic storage links
16755:
16756: =back
16757:
16758: =cut
16759:
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