File:
[LON-CAPA] /
loncom /
lonnet /
perl /
lonnet.pm
Revision
1.911:
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Wed Sep 12 03:40:35 2007 UTC (16 years, 10 months ago) by
raeburn
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lonnet.pm
- usersearch() made more similar to other routines which use lonsql
(records split on \n not &).
- srchby, srchtype, and srchterm passed as separate arguments
- backwards compatibility maintained with older lonsql
lonsql
- usersearch() query processing moved to subroutine.
- searchdomain implicitly from lonsql, isntead of arg in query
- backwards compatibility maintained with older lonnet:usersearch()
- escaping of result more consistent with other lonsql queries (replacement of & with \n in lond::reply_query_handler() now possible).
1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.911 2007/09/12 03:40:35 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: package Apache::lonnet;
31:
32: use strict;
33: use LWP::UserAgent();
34: use HTTP::Date;
35: # use Date::Parse;
36: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
37: $_64bit %env);
38:
39: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
40: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
41: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
42: %courseownerbuf, %coursetypebuf);
43:
44: use IO::Socket;
45: use GDBM_File;
46: use HTML::LCParser;
47: use Fcntl qw(:flock);
48: use Storable qw(thaw nfreeze);
49: use Time::HiRes qw( gettimeofday tv_interval );
50: use Cache::Memcached;
51: use Digest::MD5;
52: use Math::Random;
53: use LONCAPA qw(:DEFAULT :match);
54: use LONCAPA::Configuration;
55:
56: my $readit;
57: my $max_connection_retries = 10; # Or some such value.
58:
59: require Exporter;
60:
61: our @ISA = qw (Exporter);
62: our @EXPORT = qw(%env);
63:
64: =pod
65:
66: =head1 Package Variables
67:
68: These are largely undocumented, so if you decipher one please note it here.
69:
70: =over 4
71:
72: =item $processmarker
73:
74: Contains the time this process was started and this servers host id.
75:
76: =item $dumpcount
77:
78: Counts the number of times a message log flush has been attempted (regardless
79: of success) by this process. Used as part of the filename when messages are
80: delayed.
81:
82: =back
83:
84: =cut
85:
86:
87: # --------------------------------------------------------------------- Logging
88: {
89: my $logid;
90: sub instructor_log {
91: my ($hash_name,$storehash,$delflag,$uname,$udom)=@_;
92: $logid++;
93: my $id=time().'00000'.$$.'00000'.$logid;
94: return &Apache::lonnet::put('nohist_'.$hash_name,
95: { $id => {
96: 'exe_uname' => $env{'user.name'},
97: 'exe_udom' => $env{'user.domain'},
98: 'exe_time' => time(),
99: 'exe_ip' => $ENV{'REMOTE_ADDR'},
100: 'delflag' => $delflag,
101: 'logentry' => $storehash,
102: 'uname' => $uname,
103: 'udom' => $udom,
104: }
105: },
106: $env{'course.'.$env{'request.course.id'}.'.domain'},
107: $env{'course.'.$env{'request.course.id'}.'.num'}
108: );
109: }
110: }
111:
112: sub logtouch {
113: my $execdir=$perlvar{'lonDaemons'};
114: unless (-e "$execdir/logs/lonnet.log") {
115: open(my $fh,">>$execdir/logs/lonnet.log");
116: close $fh;
117: }
118: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
119: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
120: }
121:
122: sub logthis {
123: my $message=shift;
124: my $execdir=$perlvar{'lonDaemons'};
125: my $now=time;
126: my $local=localtime($now);
127: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
128: print $fh "$local ($$): $message\n";
129: close($fh);
130: }
131: return 1;
132: }
133:
134: sub logperm {
135: my $message=shift;
136: my $execdir=$perlvar{'lonDaemons'};
137: my $now=time;
138: my $local=localtime($now);
139: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
140: print $fh "$now:$message:$local\n";
141: close($fh);
142: }
143: return 1;
144: }
145:
146: sub create_connection {
147: my ($hostname,$lonid) = @_;
148: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
149: Type => SOCK_STREAM,
150: Timeout => 10);
151: return 0 if (!$client);
152: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
153: my $result = <$client>;
154: chomp($result);
155: return 1 if ($result eq 'done');
156: return 0;
157: }
158:
159:
160: # -------------------------------------------------- Non-critical communication
161: sub subreply {
162: my ($cmd,$server)=@_;
163: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
164: #
165: # With loncnew process trimming, there's a timing hole between lonc server
166: # process exit and the master server picking up the listen on the AF_UNIX
167: # socket. In that time interval, a lock file will exist:
168:
169: my $lockfile=$peerfile.".lock";
170: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
171: sleep(1);
172: }
173: # At this point, either a loncnew parent is listening or an old lonc
174: # or loncnew child is listening so we can connect or everything's dead.
175: #
176: # We'll give the connection a few tries before abandoning it. If
177: # connection is not possible, we'll con_lost back to the client.
178: #
179: my $client;
180: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
181: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
182: Type => SOCK_STREAM,
183: Timeout => 10);
184: if ($client) {
185: last; # Connected!
186: } else {
187: &create_connection(&hostname($server),$server);
188: }
189: sleep(1); # Try again later if failed connection.
190: }
191: my $answer;
192: if ($client) {
193: print $client "sethost:$server:$cmd\n";
194: $answer=<$client>;
195: if (!$answer) { $answer="con_lost"; }
196: chomp($answer);
197: } else {
198: $answer = 'con_lost'; # Failed connection.
199: }
200: return $answer;
201: }
202:
203: sub reply {
204: my ($cmd,$server)=@_;
205: unless (defined(&hostname($server))) { return 'no_such_host'; }
206: my $answer=subreply($cmd,$server);
207: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
208: &logthis("<font color=\"blue\">WARNING:".
209: " $cmd to $server returned $answer</font>");
210: }
211: return $answer;
212: }
213:
214: # ----------------------------------------------------------- Send USR1 to lonc
215:
216: sub reconlonc {
217: my ($lonid) = @_;
218: my $hostname = &hostname($lonid);
219: if ($lonid) {
220: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
221: if ($hostname && -e $peerfile) {
222: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
223: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
224: Type => SOCK_STREAM,
225: Timeout => 10);
226: if ($client) {
227: print $client ("reset_retries\n");
228: my $answer=<$client>;
229: #reset just this one.
230: }
231: }
232: return;
233: }
234:
235: &logthis("Trying to reconnect lonc");
236: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
237: if (open(my $fh,"<$loncfile")) {
238: my $loncpid=<$fh>;
239: chomp($loncpid);
240: if (kill 0 => $loncpid) {
241: &logthis("lonc at pid $loncpid responding, sending USR1");
242: kill USR1 => $loncpid;
243: sleep 1;
244: } else {
245: &logthis(
246: "<font color=\"blue\">WARNING:".
247: " lonc at pid $loncpid not responding, giving up</font>");
248: }
249: } else {
250: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
251: }
252: }
253:
254: # ------------------------------------------------------ Critical communication
255:
256: sub critical {
257: my ($cmd,$server)=@_;
258: unless (&hostname($server)) {
259: &logthis("<font color=\"blue\">WARNING:".
260: " Critical message to unknown server ($server)</font>");
261: return 'no_such_host';
262: }
263: my $answer=reply($cmd,$server);
264: if ($answer eq 'con_lost') {
265: &reconlonc("$perlvar{'lonSockDir'}/$server");
266: my $answer=reply($cmd,$server);
267: if ($answer eq 'con_lost') {
268: my $now=time;
269: my $middlename=$cmd;
270: $middlename=substr($middlename,0,16);
271: $middlename=~s/\W//g;
272: my $dfilename=
273: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
274: $dumpcount++;
275: {
276: my $dfh;
277: if (open($dfh,">$dfilename")) {
278: print $dfh "$cmd\n";
279: close($dfh);
280: }
281: }
282: sleep 2;
283: my $wcmd='';
284: {
285: my $dfh;
286: if (open($dfh,"<$dfilename")) {
287: $wcmd=<$dfh>;
288: close($dfh);
289: }
290: }
291: chomp($wcmd);
292: if ($wcmd eq $cmd) {
293: &logthis("<font color=\"blue\">WARNING: ".
294: "Connection buffer $dfilename: $cmd</font>");
295: &logperm("D:$server:$cmd");
296: return 'con_delayed';
297: } else {
298: &logthis("<font color=\"red\">CRITICAL:"
299: ." Critical connection failed: $server $cmd</font>");
300: &logperm("F:$server:$cmd");
301: return 'con_failed';
302: }
303: }
304: }
305: return $answer;
306: }
307:
308: # ------------------------------------------- check if return value is an error
309:
310: sub error {
311: my ($result) = @_;
312: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
313: if ($2 == 2) { return undef; }
314: return $1;
315: }
316: return undef;
317: }
318:
319: sub convert_and_load_session_env {
320: my ($lonidsdir,$handle)=@_;
321: my @profile;
322: {
323: open(my $idf,"$lonidsdir/$handle.id");
324: flock($idf,LOCK_SH);
325: @profile=<$idf>;
326: close($idf);
327: }
328: my %temp_env;
329: foreach my $line (@profile) {
330: if ($line !~ m/=/) {
331: return 0;
332: }
333: chomp($line);
334: my ($envname,$envvalue)=split(/=/,$line,2);
335: $temp_env{&unescape($envname)} = &unescape($envvalue);
336: }
337: unlink("$lonidsdir/$handle.id");
338: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
339: 0640)) {
340: %disk_env = %temp_env;
341: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
342: untie(%disk_env);
343: }
344: return 1;
345: }
346:
347: # ------------------------------------------- Transfer profile into environment
348: my $env_loaded;
349: sub transfer_profile_to_env {
350: my ($lonidsdir,$handle,$force_transfer) = @_;
351: if (!$force_transfer && $env_loaded) { return; }
352:
353: if (!defined($lonidsdir)) {
354: $lonidsdir = $perlvar{'lonIDsDir'};
355: }
356: if (!defined($handle)) {
357: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
358: }
359:
360: my $convert;
361: {
362: open(my $idf,"$lonidsdir/$handle.id");
363: flock($idf,LOCK_SH);
364: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
365: &GDBM_READER(),0640)) {
366: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
367: untie(%disk_env);
368: } else {
369: $convert = 1;
370: }
371: }
372: if ($convert) {
373: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
374: &logthis("Failed to load session, or convert session.");
375: }
376: }
377:
378: my %remove;
379: while ( my $envname = each(%env) ) {
380: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
381: if ($time < time-300) {
382: $remove{$key}++;
383: }
384: }
385: }
386:
387: $env{'user.environment'} = "$lonidsdir/$handle.id";
388: $env_loaded=1;
389: foreach my $expired_key (keys(%remove)) {
390: &delenv($expired_key);
391: }
392: }
393:
394: sub timed_flock {
395: my ($file,$lock_type) = @_;
396: my $failed=0;
397: eval {
398: local $SIG{__DIE__}='DEFAULT';
399: local $SIG{ALRM}=sub {
400: $failed=1;
401: die("failed lock");
402: };
403: alarm(13);
404: flock($file,$lock_type);
405: alarm(0);
406: };
407: if ($failed) {
408: return undef;
409: } else {
410: return 1;
411: }
412: }
413:
414: # ---------------------------------------------------------- Append Environment
415:
416: sub appenv {
417: my %newenv=@_;
418: foreach my $key (keys(%newenv)) {
419: if (($newenv{$key}=~/^user\.role/) || ($newenv{$key}=~/^user\.priv/)) {
420: &logthis("<font color=\"blue\">WARNING: ".
421: "Attempt to modify environment ".$key." to ".$newenv{$key}
422: .'</font>');
423: delete($newenv{$key});
424: } else {
425: $env{$key}=$newenv{$key};
426: }
427: }
428: open(my $env_file,$env{'user.environment'});
429: if (&timed_flock($env_file,LOCK_EX)
430: &&
431: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
432: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
433: while (my ($key,$value) = each(%newenv)) {
434: $disk_env{$key} = $value;
435: }
436: untie(%disk_env);
437: }
438: return 'ok';
439: }
440: # ----------------------------------------------------- Delete from Environment
441:
442: sub delenv {
443: my $delthis=shift;
444: if (($delthis=~/user\.role/) || ($delthis=~/user\.priv/)) {
445: &logthis("<font color=\"blue\">WARNING: ".
446: "Attempt to delete from environment ".$delthis);
447: return 'error';
448: }
449: open(my $env_file,$env{'user.environment'});
450: if (&timed_flock($env_file,LOCK_EX)
451: &&
452: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
453: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
454: foreach my $key (keys(%disk_env)) {
455: if ($key=~/^$delthis/) {
456: delete($env{$key});
457: delete($disk_env{$key});
458: }
459: }
460: untie(%disk_env);
461: }
462: return 'ok';
463: }
464:
465: sub get_env_multiple {
466: my ($name) = @_;
467: my @values;
468: if (defined($env{$name})) {
469: # exists is it an array
470: if (ref($env{$name})) {
471: @values=@{ $env{$name} };
472: } else {
473: $values[0]=$env{$name};
474: }
475: }
476: return(@values);
477: }
478:
479: # ------------------------------------------ Find out current server userload
480: # there is a copy in lond
481: sub userload {
482: my $numusers=0;
483: {
484: opendir(LONIDS,$perlvar{'lonIDsDir'});
485: my $filename;
486: my $curtime=time;
487: while ($filename=readdir(LONIDS)) {
488: if ($filename eq '.' || $filename eq '..') {next;}
489: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
490: if ($curtime-$mtime < 1800) { $numusers++; }
491: }
492: closedir(LONIDS);
493: }
494: my $userloadpercent=0;
495: my $maxuserload=$perlvar{'lonUserLoadLim'};
496: if ($maxuserload) {
497: $userloadpercent=100*$numusers/$maxuserload;
498: }
499: $userloadpercent=sprintf("%.2f",$userloadpercent);
500: return $userloadpercent;
501: }
502:
503: # ------------------------------------------ Fight off request when overloaded
504:
505: sub overloaderror {
506: my ($r,$checkserver)=@_;
507: unless ($checkserver) { $checkserver=$perlvar{'lonHostID'}; }
508: my $loadavg;
509: if ($checkserver eq $perlvar{'lonHostID'}) {
510: open(my $loadfile,'/proc/loadavg');
511: $loadavg=<$loadfile>;
512: $loadavg =~ s/\s.*//g;
513: $loadavg = 100*$loadavg/$perlvar{'lonLoadLim'};
514: close($loadfile);
515: } else {
516: $loadavg=&reply('load',$checkserver);
517: }
518: my $overload=$loadavg-100;
519: if ($overload>0) {
520: $r->err_headers_out->{'Retry-After'}=$overload;
521: $r->log_error('Overload of '.$overload.' on '.$checkserver);
522: return 413;
523: }
524: return '';
525: }
526:
527: # ------------------------------ Find server with least workload from spare.tab
528:
529: sub spareserver {
530: my ($loadpercent,$userloadpercent,$want_server_name) = @_;
531: my $spare_server;
532: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
533: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
534: : $userloadpercent;
535:
536: foreach my $try_server (@{ $spareid{'primary'} }) {
537: ($spare_server, $lowest_load) =
538: &compare_server_load($try_server, $spare_server, $lowest_load);
539: }
540:
541: my $found_server = ($spare_server ne '' && $lowest_load < 100);
542:
543: if (!$found_server) {
544: foreach my $try_server (@{ $spareid{'default'} }) {
545: ($spare_server, $lowest_load) =
546: &compare_server_load($try_server, $spare_server, $lowest_load);
547: }
548: }
549:
550: if (!$want_server_name) {
551: $spare_server="http://".&hostname($spare_server);
552: }
553: return $spare_server;
554: }
555:
556: sub compare_server_load {
557: my ($try_server, $spare_server, $lowest_load) = @_;
558:
559: my $loadans = &reply('load', $try_server);
560: my $userloadans = &reply('userload',$try_server);
561:
562: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
563: next; #didn't get a number from the server
564: }
565:
566: my $load;
567: if ($loadans =~ /\d/) {
568: if ($userloadans =~ /\d/) {
569: #both are numbers, pick the bigger one
570: $load = ($loadans > $userloadans) ? $loadans
571: : $userloadans;
572: } else {
573: $load = $loadans;
574: }
575: } else {
576: $load = $userloadans;
577: }
578:
579: if (($load =~ /\d/) && ($load < $lowest_load)) {
580: $spare_server = $try_server;
581: $lowest_load = $load;
582: }
583: return ($spare_server,$lowest_load);
584: }
585: # --------------------------------------------- Try to change a user's password
586:
587: sub changepass {
588: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
589: $currentpass = &escape($currentpass);
590: $newpass = &escape($newpass);
591: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context",
592: $server);
593: if (! $answer) {
594: &logthis("No reply on password change request to $server ".
595: "by $uname in domain $udom.");
596: } elsif ($answer =~ "^ok") {
597: &logthis("$uname in $udom successfully changed their password ".
598: "on $server.");
599: } elsif ($answer =~ "^pwchange_failure") {
600: &logthis("$uname in $udom was unable to change their password ".
601: "on $server. The action was blocked by either lcpasswd ".
602: "or pwchange");
603: } elsif ($answer =~ "^non_authorized") {
604: &logthis("$uname in $udom did not get their password correct when ".
605: "attempting to change it on $server.");
606: } elsif ($answer =~ "^auth_mode_error") {
607: &logthis("$uname in $udom attempted to change their password despite ".
608: "not being locally or internally authenticated on $server.");
609: } elsif ($answer =~ "^unknown_user") {
610: &logthis("$uname in $udom attempted to change their password ".
611: "on $server but were unable to because $server is not ".
612: "their home server.");
613: } elsif ($answer =~ "^refused") {
614: &logthis("$server refused to change $uname in $udom password because ".
615: "it was sent an unencrypted request to change the password.");
616: }
617: return $answer;
618: }
619:
620: # ----------------------- Try to determine user's current authentication scheme
621:
622: sub queryauthenticate {
623: my ($uname,$udom)=@_;
624: my $uhome=&homeserver($uname,$udom);
625: if (!$uhome) {
626: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
627: return 'no_host';
628: }
629: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
630: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
631: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
632: }
633: return $answer;
634: }
635:
636: # --------- Try to authenticate user from domain's lib servers (first this one)
637:
638: sub authenticate {
639: my ($uname,$upass,$udom)=@_;
640: $upass=&escape($upass);
641: $uname= &LONCAPA::clean_username($uname);
642: my $uhome=&homeserver($uname,$udom,1);
643: if ((!$uhome) || ($uhome eq 'no_host')) {
644: # Maybe the machine was offline and only re-appeared again recently?
645: &reconlonc();
646: # One more
647: my $uhome=&homeserver($uname,$udom,1);
648: if ((!$uhome) || ($uhome eq 'no_host')) {
649: &logthis("User $uname at $udom is unknown in authenticate");
650: }
651: return 'no_host';
652: }
653: my $answer=reply("encrypt:auth:$udom:$uname:$upass",$uhome);
654: if ($answer eq 'authorized') {
655: &logthis("User $uname at $udom authorized by $uhome");
656: return $uhome;
657: }
658: if ($answer eq 'non_authorized') {
659: &logthis("User $uname at $udom rejected by $uhome");
660: return 'no_host';
661: }
662: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
663: return 'no_host';
664: }
665:
666: # ---------------------- Find the homebase for a user from domain's lib servers
667:
668: my %homecache;
669: sub homeserver {
670: my ($uname,$udom,$ignoreBadCache)=@_;
671: my $index="$uname:$udom";
672:
673: if (exists($homecache{$index})) { return $homecache{$index}; }
674:
675: my %servers = &get_servers($udom,'library');
676: foreach my $tryserver (keys(%servers)) {
677: next if ($ignoreBadCache ne 'true' &&
678: exists($badServerCache{$tryserver}));
679:
680: my $answer=reply("home:$udom:$uname",$tryserver);
681: if ($answer eq 'found') {
682: delete($badServerCache{$tryserver});
683: return $homecache{$index}=$tryserver;
684: } elsif ($answer eq 'no_host') {
685: $badServerCache{$tryserver}=1;
686: }
687: }
688: return 'no_host';
689: }
690:
691: # ------------------------------------- Find the usernames behind a list of IDs
692:
693: sub idget {
694: my ($udom,@ids)=@_;
695: my %returnhash=();
696:
697: my %servers = &get_servers($udom,'library');
698: foreach my $tryserver (keys(%servers)) {
699: my $idlist=join('&',@ids);
700: $idlist=~tr/A-Z/a-z/;
701: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
702: my @answer=();
703: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
704: @answer=split(/\&/,$reply);
705: } ;
706: my $i;
707: for ($i=0;$i<=$#ids;$i++) {
708: if ($answer[$i]) {
709: $returnhash{$ids[$i]}=$answer[$i];
710: }
711: }
712: }
713: return %returnhash;
714: }
715:
716: # ------------------------------------- Find the IDs behind a list of usernames
717:
718: sub idrget {
719: my ($udom,@unames)=@_;
720: my %returnhash=();
721: foreach my $uname (@unames) {
722: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
723: }
724: return %returnhash;
725: }
726:
727: # ------------------------------- Store away a list of names and associated IDs
728:
729: sub idput {
730: my ($udom,%ids)=@_;
731: my %servers=();
732: foreach my $uname (keys(%ids)) {
733: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
734: my $uhom=&homeserver($uname,$udom);
735: if ($uhom ne 'no_host') {
736: my $id=&escape($ids{$uname});
737: $id=~tr/A-Z/a-z/;
738: my $esc_unam=&escape($uname);
739: if ($servers{$uhom}) {
740: $servers{$uhom}.='&'.$id.'='.$esc_unam;
741: } else {
742: $servers{$uhom}=$id.'='.$esc_unam;
743: }
744: }
745: }
746: foreach my $server (keys(%servers)) {
747: &critical('idput:'.$udom.':'.$servers{$server},$server);
748: }
749: }
750:
751: # ------------------------------------------- get items from domain db files
752:
753: sub get_dom {
754: my ($namespace,$storearr,$udom,$uhome)=@_;
755: my $items='';
756: foreach my $item (@$storearr) {
757: $items.=&escape($item).'&';
758: }
759: $items=~s/\&$//;
760: if (!$udom) {
761: $udom=$env{'user.domain'};
762: if (defined(&domain($udom,'primary'))) {
763: $uhome=&domain($udom,'primary');
764: } else {
765: undef($uhome);
766: }
767: } else {
768: if (!$uhome) {
769: if (defined(&domain($udom,'primary'))) {
770: $uhome=&domain($udom,'primary');
771: }
772: }
773: }
774: if ($udom && $uhome && ($uhome ne 'no_host')) {
775: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
776: my %returnhash;
777: if ($rep eq '' || $rep =~ /^error: 2 /) {
778: return %returnhash;
779: }
780: my @pairs=split(/\&/,$rep);
781: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
782: return @pairs;
783: }
784: my $i=0;
785: foreach my $item (@$storearr) {
786: $returnhash{$item}=&thaw_unescape($pairs[$i]);
787: $i++;
788: }
789: return %returnhash;
790: } else {
791: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
792: }
793: }
794:
795: # -------------------------------------------- put items in domain db files
796:
797: sub put_dom {
798: my ($namespace,$storehash,$udom,$uhome)=@_;
799: if (!$udom) {
800: $udom=$env{'user.domain'};
801: if (defined(&domain($udom,'primary'))) {
802: $uhome=&domain($udom,'primary');
803: } else {
804: undef($uhome);
805: }
806: } else {
807: if (!$uhome) {
808: if (defined(&domain($udom,'primary'))) {
809: $uhome=&domain($udom,'primary');
810: }
811: }
812: }
813: if ($udom && $uhome && ($uhome ne 'no_host')) {
814: my $items='';
815: foreach my $item (keys(%$storehash)) {
816: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
817: }
818: $items=~s/\&$//;
819: return &reply("putdom:$udom:$namespace:$items",$uhome);
820: } else {
821: &logthis("put_dom failed - no homeserver and/or domain");
822: }
823: }
824:
825: sub retrieve_inst_usertypes {
826: my ($udom) = @_;
827: my (%returnhash,@order);
828: if (defined(&domain($udom,'primary'))) {
829: my $uhome=&domain($udom,'primary');
830: my $rep=&reply("inst_usertypes:$udom",$uhome);
831: my ($hashitems,$orderitems) = split(/:/,$rep);
832: my @pairs=split(/\&/,$hashitems);
833: foreach my $item (@pairs) {
834: my ($key,$value)=split(/=/,$item,2);
835: $key = &unescape($key);
836: next if ($key =~ /^error: 2 /);
837: $returnhash{$key}=&thaw_unescape($value);
838: }
839: my @esc_order = split(/\&/,$orderitems);
840: foreach my $item (@esc_order) {
841: push(@order,&unescape($item));
842: }
843: } else {
844: &logthis("get_dom failed - no primary domain server for $udom");
845: }
846: return (\%returnhash,\@order);
847: }
848:
849: sub is_domainimage {
850: my ($url) = @_;
851: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
852: if (&domain($1) ne '') {
853: return '1';
854: }
855: }
856: return;
857: }
858:
859: sub inst_directory_query {
860: my ($srch) = @_;
861: my $udom = $srch->{'srchdomain'};
862: my %results;
863: my $homeserver = &domain($udom,'primary');
864: my $outcome;
865: if ($homeserver ne '') {
866: my $queryid=&reply("querysend:instdirsearch:".
867: &escape($srch->{'srchby'}).':'.
868: &escape($srch->{'srchterm'}).':'.
869: &escape($srch->{'srchtype'}),$homeserver);
870: my $host=&hostname($homeserver);
871: if ($queryid !~/^\Q$host\E\_/) {
872: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
873: return;
874: }
875: my $response = &get_query_reply($queryid);
876: my $maxtries = 5;
877: my $tries = 1;
878: while (($response=~/^timeout/) && ($tries < $maxtries)) {
879: $response = &get_query_reply($queryid);
880: $tries ++;
881: }
882:
883: if (!&error($response) && $response ne 'refused') {
884: if ($response eq 'unavailable') {
885: $outcome = $response;
886: } else {
887: $outcome = 'ok';
888: my @matches = split(/\n/,$response);
889: foreach my $match (@matches) {
890: my ($key,$value) = split(/=/,$match);
891: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
892: }
893: }
894: }
895: }
896: return ($outcome,%results);
897: }
898:
899: sub usersearch {
900: my ($srch) = @_;
901: my $dom = $srch->{'srchdomain'};
902: my %results;
903: my %libserv = &all_library();
904: my $query = 'usersearch';
905: foreach my $tryserver (keys(%libserv)) {
906: if (&host_domain($tryserver) eq $dom) {
907: my $host=&hostname($tryserver);
908: my $queryid=
909: &reply("querysend:".&escape($query).':'.
910: &escape($srch->{'srchby'}).':'.
911: &escape($srch->{'srchtype'}).':'.
912: &escape($srch->{'srchterm'}),$tryserver);
913: if ($queryid !~/^\Q$host\E\_/) {
914: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
915: next;
916: }
917: my $reply = &get_query_reply($queryid);
918: my $maxtries = 1;
919: my $tries = 1;
920: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
921: $reply = &get_query_reply($queryid);
922: $tries ++;
923: }
924: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
925: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
926: } else {
927: my @matches;
928: if ($reply =~ /\n/) {
929: @matches = split(/\n/,$reply);
930: } else {
931: @matches = split(/\&/,$reply);
932: }
933: foreach my $match (@matches) {
934: my ($uname,$udom,%userhash);
935: foreach my $entry (split(/:/,$match)) {
936: my ($key,$value) =
937: map {&unescape($_);} split(/=/,$entry);
938: $userhash{$key} = $value;
939: if ($key eq 'username') {
940: $uname = $value;
941: } elsif ($key eq 'domain') {
942: $udom = $value;
943: }
944: }
945: $results{$uname.':'.$udom} = \%userhash;
946: }
947: }
948: }
949: }
950: return %results;
951: }
952:
953: # --------------------------------------------------- Assign a key to a student
954:
955: sub assign_access_key {
956: #
957: # a valid key looks like uname:udom#comments
958: # comments are being appended
959: #
960: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
961: $kdom=
962: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
963: $knum=
964: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
965: $cdom=
966: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
967: $cnum=
968: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
969: $udom=$env{'user.name'} unless (defined($udom));
970: $uname=$env{'user.domain'} unless (defined($uname));
971: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
972: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
973: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
974: # assigned to this person
975: # - this should not happen,
976: # unless something went wrong
977: # the first time around
978: # ready to assign
979: $logentry=$1.'; '.$logentry;
980: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
981: $kdom,$knum) eq 'ok') {
982: # key now belongs to user
983: my $envkey='key.'.$cdom.'_'.$cnum;
984: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
985: &appenv('environment.'.$envkey => $ckey);
986: return 'ok';
987: } else {
988: return
989: 'error: Count not permanently assign key, will need to be re-entered later.';
990: }
991: } else {
992: return 'error: Could not assign key, try again later.';
993: }
994: } elsif (!$existing{$ckey}) {
995: # the key does not exist
996: return 'error: The key does not exist';
997: } else {
998: # the key is somebody else's
999: return 'error: The key is already in use';
1000: }
1001: }
1002:
1003: # ------------------------------------------ put an additional comment on a key
1004:
1005: sub comment_access_key {
1006: #
1007: # a valid key looks like uname:udom#comments
1008: # comments are being appended
1009: #
1010: my ($ckey,$cdom,$cnum,$logentry)=@_;
1011: $cdom=
1012: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1013: $cnum=
1014: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1015: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1016: if ($existing{$ckey}) {
1017: $existing{$ckey}.='; '.$logentry;
1018: # ready to assign
1019: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
1020: $cdom,$cnum) eq 'ok') {
1021: return 'ok';
1022: } else {
1023: return 'error: Count not store comment.';
1024: }
1025: } else {
1026: # the key does not exist
1027: return 'error: The key does not exist';
1028: }
1029: }
1030:
1031: # ------------------------------------------------------ Generate a set of keys
1032:
1033: sub generate_access_keys {
1034: my ($number,$cdom,$cnum,$logentry)=@_;
1035: $cdom=
1036: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1037: $cnum=
1038: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1039: unless (&allowed('mky',$cdom)) { return 0; }
1040: unless (($cdom) && ($cnum)) { return 0; }
1041: if ($number>10000) { return 0; }
1042: sleep(2); # make sure don't get same seed twice
1043: srand(time()^($$+($$<<15))); # from "Programming Perl"
1044: my $total=0;
1045: for (my $i=1;$i<=$number;$i++) {
1046: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
1047: sprintf("%lx",int(100000*rand)).'-'.
1048: sprintf("%lx",int(100000*rand));
1049: $newkey=~s/1/g/g; # folks mix up 1 and l
1050: $newkey=~s/0/h/g; # and also 0 and O
1051: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
1052: if ($existing{$newkey}) {
1053: $i--;
1054: } else {
1055: if (&put('accesskeys',
1056: { $newkey => '# generated '.localtime().
1057: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
1058: '; '.$logentry },
1059: $cdom,$cnum) eq 'ok') {
1060: $total++;
1061: }
1062: }
1063: }
1064: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
1065: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
1066: return $total;
1067: }
1068:
1069: # ------------------------------------------------------- Validate an accesskey
1070:
1071: sub validate_access_key {
1072: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
1073: $cdom=
1074: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1075: $cnum=
1076: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1077: $udom=$env{'user.domain'} unless (defined($udom));
1078: $uname=$env{'user.name'} unless (defined($uname));
1079: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1080: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
1081: }
1082:
1083: # ------------------------------------- Find the section of student in a course
1084: sub devalidate_getsection_cache {
1085: my ($udom,$unam,$courseid)=@_;
1086: my $hashid="$udom:$unam:$courseid";
1087: &devalidate_cache_new('getsection',$hashid);
1088: }
1089:
1090: sub courseid_to_courseurl {
1091: my ($courseid) = @_;
1092: #already url style courseid
1093: return $courseid if ($courseid =~ m{^/});
1094:
1095: if (exists($env{'course.'.$courseid.'.num'})) {
1096: my $cnum = $env{'course.'.$courseid.'.num'};
1097: my $cdom = $env{'course.'.$courseid.'.domain'};
1098: return "/$cdom/$cnum";
1099: }
1100:
1101: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
1102: if (exists($courseinfo{'num'})) {
1103: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
1104: }
1105:
1106: return undef;
1107: }
1108:
1109: sub getsection {
1110: my ($udom,$unam,$courseid)=@_;
1111: my $cachetime=1800;
1112:
1113: my $hashid="$udom:$unam:$courseid";
1114: my ($result,$cached)=&is_cached_new('getsection',$hashid);
1115: if (defined($cached)) { return $result; }
1116:
1117: my %Pending;
1118: my %Expired;
1119: #
1120: # Each role can either have not started yet (pending), be active,
1121: # or have expired.
1122: #
1123: # If there is an active role, we are done.
1124: #
1125: # If there is more than one role which has not started yet,
1126: # choose the one which will start sooner
1127: # If there is one role which has not started yet, return it.
1128: #
1129: # If there is more than one expired role, choose the one which ended last.
1130: # If there is a role which has expired, return it.
1131: #
1132: $courseid = &courseid_to_courseurl($courseid);
1133: my %roleshash = &dump('roles',$udom,$unam,$courseid);
1134: foreach my $key (keys(%roleshash)) {
1135: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
1136: my $section=$1;
1137: if ($key eq $courseid.'_st') { $section=''; }
1138: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
1139: my $now=time;
1140: if (defined($end) && $end && ($now > $end)) {
1141: $Expired{$end}=$section;
1142: next;
1143: }
1144: if (defined($start) && $start && ($now < $start)) {
1145: $Pending{$start}=$section;
1146: next;
1147: }
1148: return &do_cache_new('getsection',$hashid,$section,$cachetime);
1149: }
1150: #
1151: # Presumedly there will be few matching roles from the above
1152: # loop and the sorting time will be negligible.
1153: if (scalar(keys(%Pending))) {
1154: my ($time) = sort {$a <=> $b} keys(%Pending);
1155: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
1156: }
1157: if (scalar(keys(%Expired))) {
1158: my @sorted = sort {$a <=> $b} keys(%Expired);
1159: my $time = pop(@sorted);
1160: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
1161: }
1162: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
1163: }
1164:
1165: sub save_cache {
1166: &purge_remembered();
1167: #&Apache::loncommon::validate_page();
1168: undef(%env);
1169: undef($env_loaded);
1170: }
1171:
1172: my $to_remember=-1;
1173: my %remembered;
1174: my %accessed;
1175: my $kicks=0;
1176: my $hits=0;
1177: sub make_key {
1178: my ($name,$id) = @_;
1179: if (length($id) > 65
1180: && length(&escape($id)) > 200) {
1181: $id=length($id).':'.&Digest::MD5::md5_hex($id);
1182: }
1183: return &escape($name.':'.$id);
1184: }
1185:
1186: sub devalidate_cache_new {
1187: my ($name,$id,$debug) = @_;
1188: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
1189: $id=&make_key($name,$id);
1190: $memcache->delete($id);
1191: delete($remembered{$id});
1192: delete($accessed{$id});
1193: }
1194:
1195: sub is_cached_new {
1196: my ($name,$id,$debug) = @_;
1197: $id=&make_key($name,$id);
1198: if (exists($remembered{$id})) {
1199: if ($debug) { &Apache::lonnet::logthis("Earyl return $id of $remembered{$id} "); }
1200: $accessed{$id}=[&gettimeofday()];
1201: $hits++;
1202: return ($remembered{$id},1);
1203: }
1204: my $value = $memcache->get($id);
1205: if (!(defined($value))) {
1206: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
1207: return (undef,undef);
1208: }
1209: if ($value eq '__undef__') {
1210: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
1211: $value=undef;
1212: }
1213: &make_room($id,$value,$debug);
1214: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
1215: return ($value,1);
1216: }
1217:
1218: sub do_cache_new {
1219: my ($name,$id,$value,$time,$debug) = @_;
1220: $id=&make_key($name,$id);
1221: my $setvalue=$value;
1222: if (!defined($setvalue)) {
1223: $setvalue='__undef__';
1224: }
1225: if (!defined($time) ) {
1226: $time=600;
1227: }
1228: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
1229: my $result = $memcache->set($id,$setvalue,$time);
1230: if (! $result) {
1231: &logthis("caching of id -> $id failed");
1232: $memcache->disconnect_all();
1233: }
1234: # need to make a copy of $value
1235: #&make_room($id,$value,$debug);
1236: return $value;
1237: }
1238:
1239: sub make_room {
1240: my ($id,$value,$debug)=@_;
1241: $remembered{$id}=$value;
1242: if ($to_remember<0) { return; }
1243: $accessed{$id}=[&gettimeofday()];
1244: if (scalar(keys(%remembered)) <= $to_remember) { return; }
1245: my $to_kick;
1246: my $max_time=0;
1247: foreach my $other (keys(%accessed)) {
1248: if (&tv_interval($accessed{$other}) > $max_time) {
1249: $to_kick=$other;
1250: $max_time=&tv_interval($accessed{$other});
1251: }
1252: }
1253: delete($remembered{$to_kick});
1254: delete($accessed{$to_kick});
1255: $kicks++;
1256: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
1257: return;
1258: }
1259:
1260: sub purge_remembered {
1261: #&logthis("Tossing ".scalar(keys(%remembered)));
1262: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
1263: undef(%remembered);
1264: undef(%accessed);
1265: }
1266: # ------------------------------------- Read an entry from a user's environment
1267:
1268: sub userenvironment {
1269: my ($udom,$unam,@what)=@_;
1270: my %returnhash=();
1271: my @answer=split(/\&/,
1272: &reply('get:'.$udom.':'.$unam.':environment:'.join('&',@what),
1273: &homeserver($unam,$udom)));
1274: my $i;
1275: for ($i=0;$i<=$#what;$i++) {
1276: $returnhash{$what[$i]}=&unescape($answer[$i]);
1277: }
1278: return %returnhash;
1279: }
1280:
1281: # ---------------------------------------------------------- Get a studentphoto
1282: sub studentphoto {
1283: my ($udom,$unam,$ext) = @_;
1284: my $home=&Apache::lonnet::homeserver($unam,$udom);
1285: if (defined($env{'request.course.id'})) {
1286: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
1287: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
1288: return(&retrievestudentphoto($udom,$unam,$ext));
1289: } else {
1290: my ($result,$perm_reqd)=
1291: &Apache::lonnet::auto_photo_permission($unam,$udom);
1292: if ($result eq 'ok') {
1293: if (!($perm_reqd eq 'yes')) {
1294: return(&retrievestudentphoto($udom,$unam,$ext));
1295: }
1296: }
1297: }
1298: }
1299: } else {
1300: my ($result,$perm_reqd) =
1301: &Apache::lonnet::auto_photo_permission($unam,$udom);
1302: if ($result eq 'ok') {
1303: if (!($perm_reqd eq 'yes')) {
1304: return(&retrievestudentphoto($udom,$unam,$ext));
1305: }
1306: }
1307: }
1308: return '/adm/lonKaputt/lonlogo_broken.gif';
1309: }
1310:
1311: sub retrievestudentphoto {
1312: my ($udom,$unam,$ext,$type) = @_;
1313: my $home=&Apache::lonnet::homeserver($unam,$udom);
1314: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
1315: if ($ret eq 'ok') {
1316: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
1317: if ($type eq 'thumbnail') {
1318: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
1319: }
1320: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
1321: return $tokenurl;
1322: } else {
1323: if ($type eq 'thumbnail') {
1324: return '/adm/lonKaputt/genericstudent_tn.gif';
1325: } else {
1326: return '/adm/lonKaputt/lonlogo_broken.gif';
1327: }
1328: }
1329: }
1330:
1331: # -------------------------------------------------------------------- New chat
1332:
1333: sub chatsend {
1334: my ($newentry,$anon,$group)=@_;
1335: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1336: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1337: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
1338: &reply('chatsend:'.$cdom.':'.$cnum.':'.
1339: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
1340: &escape($newentry)).':'.$group,$chome);
1341: }
1342:
1343: # ------------------------------------------ Find current version of a resource
1344:
1345: sub getversion {
1346: my $fname=&clutter(shift);
1347: unless ($fname=~/^\/res\//) { return -1; }
1348: return ¤tversion(&filelocation('',$fname));
1349: }
1350:
1351: sub currentversion {
1352: my $fname=shift;
1353: my ($result,$cached)=&is_cached_new('resversion',$fname);
1354: if (defined($cached)) { return $result; }
1355: my $author=$fname;
1356: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1357: my ($udom,$uname)=split(/\//,$author);
1358: my $home=homeserver($uname,$udom);
1359: if ($home eq 'no_host') {
1360: return -1;
1361: }
1362: my $answer=reply("currentversion:$fname",$home);
1363: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1364: return -1;
1365: }
1366: return &do_cache_new('resversion',$fname,$answer,600);
1367: }
1368:
1369: # ----------------------------- Subscribe to a resource, return URL if possible
1370:
1371: sub subscribe {
1372: my $fname=shift;
1373: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
1374: $fname=~s/[\n\r]//g;
1375: my $author=$fname;
1376: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1377: my ($udom,$uname)=split(/\//,$author);
1378: my $home=homeserver($uname,$udom);
1379: if ($home eq 'no_host') {
1380: return 'not_found';
1381: }
1382: my $answer=reply("sub:$fname",$home);
1383: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1384: $answer.=' by '.$home;
1385: }
1386: return $answer;
1387: }
1388:
1389: # -------------------------------------------------------------- Replicate file
1390:
1391: sub repcopy {
1392: my $filename=shift;
1393: $filename=~s/\/+/\//g;
1394: if ($filename=~m|^/home/httpd/html/adm/|) { return 'ok'; }
1395: if ($filename=~m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
1396: if ($filename=~m|^/home/httpd/html/userfiles/| or
1397: $filename=~m -^/*(uploaded|editupload)/-) {
1398: return &repcopy_userfile($filename);
1399: }
1400: $filename=~s/[\n\r]//g;
1401: my $transname="$filename.in.transfer";
1402: # FIXME: this should flock
1403: if ((-e $filename) || (-e $transname)) { return 'ok'; }
1404: my $remoteurl=subscribe($filename);
1405: if ($remoteurl =~ /^con_lost by/) {
1406: &logthis("Subscribe returned $remoteurl: $filename");
1407: return 'unavailable';
1408: } elsif ($remoteurl eq 'not_found') {
1409: #&logthis("Subscribe returned not_found: $filename");
1410: return 'not_found';
1411: } elsif ($remoteurl =~ /^rejected by/) {
1412: &logthis("Subscribe returned $remoteurl: $filename");
1413: return 'forbidden';
1414: } elsif ($remoteurl eq 'directory') {
1415: return 'ok';
1416: } else {
1417: my $author=$filename;
1418: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1419: my ($udom,$uname)=split(/\//,$author);
1420: my $home=homeserver($uname,$udom);
1421: unless ($home eq $perlvar{'lonHostID'}) {
1422: my @parts=split(/\//,$filename);
1423: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
1424: if ($path ne "$perlvar{'lonDocRoot'}/res") {
1425: &logthis("Malconfiguration for replication: $filename");
1426: return 'bad_request';
1427: }
1428: my $count;
1429: for ($count=5;$count<$#parts;$count++) {
1430: $path.="/$parts[$count]";
1431: if ((-e $path)!=1) {
1432: mkdir($path,0777);
1433: }
1434: }
1435: my $ua=new LWP::UserAgent;
1436: my $request=new HTTP::Request('GET',"$remoteurl");
1437: my $response=$ua->request($request,$transname);
1438: if ($response->is_error()) {
1439: unlink($transname);
1440: my $message=$response->status_line;
1441: &logthis("<font color=\"blue\">WARNING:"
1442: ." LWP get: $message: $filename</font>");
1443: return 'unavailable';
1444: } else {
1445: if ($remoteurl!~/\.meta$/) {
1446: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
1447: my $mresponse=$ua->request($mrequest,$filename.'.meta');
1448: if ($mresponse->is_error()) {
1449: unlink($filename.'.meta');
1450: &logthis(
1451: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
1452: }
1453: }
1454: rename($transname,$filename);
1455: return 'ok';
1456: }
1457: }
1458: }
1459: }
1460:
1461: # ------------------------------------------------ Get server side include body
1462: sub ssi_body {
1463: my ($filelink,%form)=@_;
1464: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
1465: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
1466: }
1467: my $output=($filelink=~/^http\:/?&externalssi($filelink):
1468: &ssi($filelink,%form));
1469: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
1470: $output=~s/^.*?\<body[^\>]*\>//si;
1471: $output=~s/(.*)\<\/body\s*\>.*?$/$1/si;
1472: return $output;
1473: }
1474:
1475: # --------------------------------------------------------- Server Side Include
1476:
1477: sub absolute_url {
1478: my ($host_name) = @_;
1479: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
1480: if ($host_name eq '') {
1481: $host_name = $ENV{'SERVER_NAME'};
1482: }
1483: return $protocol.$host_name;
1484: }
1485:
1486: sub ssi {
1487:
1488: my ($fn,%form)=@_;
1489:
1490: my $ua=new LWP::UserAgent;
1491:
1492: my $request;
1493:
1494: $form{'no_update_last_known'}=1;
1495: &Apache::lonenc::check_encrypt(\$fn);
1496: if (%form) {
1497: $request=new HTTP::Request('POST',&absolute_url().$fn);
1498: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys %form));
1499: } else {
1500: $request=new HTTP::Request('GET',&absolute_url().$fn);
1501: }
1502:
1503: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
1504: my $response=$ua->request($request);
1505:
1506: return $response->content;
1507: }
1508:
1509: sub externalssi {
1510: my ($url)=@_;
1511: my $ua=new LWP::UserAgent;
1512: my $request=new HTTP::Request('GET',$url);
1513: my $response=$ua->request($request);
1514: return $response->content;
1515: }
1516:
1517: # -------------------------------- Allow a /uploaded/ URI to be vouched for
1518:
1519: sub allowuploaded {
1520: my ($srcurl,$url)=@_;
1521: $url=&clutter(&declutter($url));
1522: my $dir=$url;
1523: $dir=~s/\/[^\/]+$//;
1524: my %httpref=();
1525: my $httpurl=&hreflocation('',$url);
1526: $httpref{'httpref.'.$httpurl}=$srcurl;
1527: &Apache::lonnet::appenv(%httpref);
1528: }
1529:
1530: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
1531: # input: action, courseID, current domain, intended
1532: # path to file, source of file, instruction to parse file for objects,
1533: # ref to hash for embedded objects,
1534: # ref to hash for codebase of java objects.
1535: #
1536: # output: url to file (if action was uploaddoc),
1537: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
1538: #
1539: # Allows directory structure to be used within lonUsers/../userfiles/ for a
1540: # course.
1541: #
1542: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1543: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
1544: # course's home server.
1545: #
1546: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
1547: # be copied from $source (current location) to
1548: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1549: # and will then be copied to
1550: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
1551: # course's home server.
1552: #
1553: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1554: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
1555: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1556: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
1557: # in course's home server.
1558: #
1559:
1560: sub process_coursefile {
1561: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase)=@_;
1562: my $fetchresult;
1563: my $home=&homeserver($docuname,$docudom);
1564: if ($action eq 'propagate') {
1565: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1566: $home);
1567: } else {
1568: my $fpath = '';
1569: my $fname = $file;
1570: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
1571: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
1572: my $filepath = &build_filepath($fpath);
1573: if ($action eq 'copy') {
1574: if ($source eq '') {
1575: $fetchresult = 'no source file';
1576: return $fetchresult;
1577: } else {
1578: my $destination = $filepath.'/'.$fname;
1579: rename($source,$destination);
1580: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1581: $home);
1582: }
1583: } elsif ($action eq 'uploaddoc') {
1584: open(my $fh,'>'.$filepath.'/'.$fname);
1585: print $fh $env{'form.'.$source};
1586: close($fh);
1587: if ($parser eq 'parse') {
1588: my $parse_result = &extract_embedded_items($filepath,$fname,$allfiles,$codebase);
1589: unless ($parse_result eq 'ok') {
1590: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
1591: }
1592: }
1593: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1594: $home);
1595: if ($fetchresult eq 'ok') {
1596: return '/uploaded/'.$fpath.'/'.$fname;
1597: } else {
1598: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1599: ' to host '.$home.': '.$fetchresult);
1600: return '/adm/notfound.html';
1601: }
1602: }
1603: }
1604: unless ( $fetchresult eq 'ok') {
1605: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1606: ' to host '.$home.': '.$fetchresult);
1607: }
1608: return $fetchresult;
1609: }
1610:
1611: sub build_filepath {
1612: my ($fpath) = @_;
1613: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
1614: unless ($fpath eq '') {
1615: my @parts=split('/',$fpath);
1616: foreach my $part (@parts) {
1617: $filepath.= '/'.$part;
1618: if ((-e $filepath)!=1) {
1619: mkdir($filepath,0777);
1620: }
1621: }
1622: }
1623: return $filepath;
1624: }
1625:
1626: sub store_edited_file {
1627: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
1628: my $file = $primary_url;
1629: $file =~ s#^/uploaded/$docudom/$docuname/##;
1630: my $fpath = '';
1631: my $fname = $file;
1632: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
1633: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
1634: my $filepath = &build_filepath($fpath);
1635: open(my $fh,'>'.$filepath.'/'.$fname);
1636: print $fh $content;
1637: close($fh);
1638: my $home=&homeserver($docuname,$docudom);
1639: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1640: $home);
1641: if ($$fetchresult eq 'ok') {
1642: return '/uploaded/'.$fpath.'/'.$fname;
1643: } else {
1644: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1645: ' to host '.$home.': '.$$fetchresult);
1646: return '/adm/notfound.html';
1647: }
1648: }
1649:
1650: sub clean_filename {
1651: my ($fname,$args)=@_;
1652: # Replace Windows backslashes by forward slashes
1653: $fname=~s/\\/\//g;
1654: if (!$args->{'keep_path'}) {
1655: # Get rid of everything but the actual filename
1656: $fname=~s/^.*\/([^\/]+)$/$1/;
1657: }
1658: # Replace spaces by underscores
1659: $fname=~s/\s+/\_/g;
1660: # Replace all other weird characters by nothing
1661: $fname=~s{[^/\w\.\-]}{}g;
1662: # Replace all .\d. sequences with _\d. so they no longer look like version
1663: # numbers
1664: $fname=~s/\.(\d+)(?=\.)/_$1/g;
1665: return $fname;
1666: }
1667:
1668: # --------------- Take an uploaded file and put it into the userfiles directory
1669: # input: $formname - the contents of the file are in $env{"form.$formname"}
1670: # the desired filenam is in $env{"form.$formname.filename"}
1671: # $coursedoc - if true up to the current course
1672: # if false
1673: # $subdir - directory in userfile to store the file into
1674: # $parser - instruction to parse file for objects ($parser = parse)
1675: # $allfiles - reference to hash for embedded objects
1676: # $codebase - reference to hash for codebase of java objects
1677: # $desuname - username for permanent storage of uploaded file
1678: # $dsetudom - domain for permanaent storage of uploaded file
1679: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
1680: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
1681: #
1682: # output: url of file in userspace, or error: <message>
1683: # or /adm/notfound.html if failure to upload occurse
1684:
1685:
1686: sub userfileupload {
1687: my ($formname,$coursedoc,$subdir,$parser,$allfiles,$codebase,$destuname,
1688: $destudom,$thumbwidth,$thumbheight)=@_;
1689: if (!defined($subdir)) { $subdir='unknown'; }
1690: my $fname=$env{'form.'.$formname.'.filename'};
1691: $fname=&clean_filename($fname);
1692: # See if there is anything left
1693: unless ($fname) { return 'error: no uploaded file'; }
1694: chop($env{'form.'.$formname});
1695: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) { #files uploaded to help request form are handled differently
1696: my $now = time;
1697: my $filepath = 'tmp/helprequests/'.$now;
1698: my @parts=split(/\//,$filepath);
1699: my $fullpath = $perlvar{'lonDaemons'};
1700: for (my $i=0;$i<@parts;$i++) {
1701: $fullpath .= '/'.$parts[$i];
1702: if ((-e $fullpath)!=1) {
1703: mkdir($fullpath,0777);
1704: }
1705: }
1706: open(my $fh,'>'.$fullpath.'/'.$fname);
1707: print $fh $env{'form.'.$formname};
1708: close($fh);
1709: return $fullpath.'/'.$fname;
1710: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) { #files uploaded to create course page are handled differently
1711: my $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
1712: '_'.$env{'user.domain'}.'/pending';
1713: my @parts=split(/\//,$filepath);
1714: my $fullpath = $perlvar{'lonDaemons'};
1715: for (my $i=0;$i<@parts;$i++) {
1716: $fullpath .= '/'.$parts[$i];
1717: if ((-e $fullpath)!=1) {
1718: mkdir($fullpath,0777);
1719: }
1720: }
1721: open(my $fh,'>'.$fullpath.'/'.$fname);
1722: print $fh $env{'form.'.$formname};
1723: close($fh);
1724: return $fullpath.'/'.$fname;
1725: }
1726:
1727: # Create the directory if not present
1728: $fname="$subdir/$fname";
1729: if ($coursedoc) {
1730: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
1731: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1732: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
1733: return &finishuserfileupload($docuname,$docudom,
1734: $formname,$fname,$parser,$allfiles,
1735: $codebase,$thumbwidth,$thumbheight);
1736: } else {
1737: $fname=$env{'form.folder'}.'/'.$fname;
1738: return &process_coursefile('uploaddoc',$docuname,$docudom,
1739: $fname,$formname,$parser,
1740: $allfiles,$codebase);
1741: }
1742: } elsif (defined($destuname)) {
1743: my $docuname=$destuname;
1744: my $docudom=$destudom;
1745: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
1746: $parser,$allfiles,$codebase,
1747: $thumbwidth,$thumbheight);
1748:
1749: } else {
1750: my $docuname=$env{'user.name'};
1751: my $docudom=$env{'user.domain'};
1752: if (exists($env{'form.group'})) {
1753: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
1754: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1755: }
1756: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
1757: $parser,$allfiles,$codebase,
1758: $thumbwidth,$thumbheight);
1759: }
1760: }
1761:
1762: sub finishuserfileupload {
1763: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
1764: $thumbwidth,$thumbheight) = @_;
1765: my $path=$docudom.'/'.$docuname.'/';
1766: my $filepath=$perlvar{'lonDocRoot'};
1767: my ($fnamepath,$file,$fetchthumb);
1768: $file=$fname;
1769: if ($fname=~m|/|) {
1770: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
1771: $path.=$fnamepath.'/';
1772: }
1773: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
1774: my $count;
1775: for ($count=4;$count<=$#parts;$count++) {
1776: $filepath.="/$parts[$count]";
1777: if ((-e $filepath)!=1) {
1778: mkdir($filepath,0777);
1779: }
1780: }
1781: # Save the file
1782: {
1783: if (!open(FH,'>'.$filepath.'/'.$file)) {
1784: &logthis('Failed to create '.$filepath.'/'.$file);
1785: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
1786: return '/adm/notfound.html';
1787: }
1788: if (!print FH ($env{'form.'.$formname})) {
1789: &logthis('Failed to write to '.$filepath.'/'.$file);
1790: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
1791: return '/adm/notfound.html';
1792: }
1793: close(FH);
1794: }
1795: if ($parser eq 'parse') {
1796: my $parse_result = &extract_embedded_items($filepath,$file,$allfiles,
1797: $codebase);
1798: unless ($parse_result eq 'ok') {
1799: &logthis('Failed to parse '.$filepath.$file.
1800: ' for embedded media: '.$parse_result);
1801: }
1802: }
1803: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
1804: my $input = $filepath.'/'.$file;
1805: my $output = $filepath.'/'.'tn-'.$file;
1806: my $thumbsize = $thumbwidth.'x'.$thumbheight;
1807: system("convert -sample $thumbsize $input $output");
1808: if (-e $filepath.'/'.'tn-'.$file) {
1809: $fetchthumb = 1;
1810: }
1811: }
1812:
1813: # Notify homeserver to grep it
1814: #
1815: my $docuhome=&homeserver($docuname,$docudom);
1816: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
1817: if ($fetchresult eq 'ok') {
1818: if ($fetchthumb) {
1819: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
1820: if ($thumbresult ne 'ok') {
1821: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
1822: $docuhome.': '.$thumbresult);
1823: }
1824: }
1825: #
1826: # Return the URL to it
1827: return '/uploaded/'.$path.$file;
1828: } else {
1829: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
1830: ': '.$fetchresult);
1831: return '/adm/notfound.html';
1832: }
1833: }
1834:
1835: sub extract_embedded_items {
1836: my ($filepath,$file,$allfiles,$codebase,$content) = @_;
1837: my @state = ();
1838: my %javafiles = (
1839: codebase => '',
1840: code => '',
1841: archive => ''
1842: );
1843: my %mediafiles = (
1844: src => '',
1845: movie => '',
1846: );
1847: my $p;
1848: if ($content) {
1849: $p = HTML::LCParser->new($content);
1850: } else {
1851: $p = HTML::LCParser->new($filepath.'/'.$file);
1852: }
1853: while (my $t=$p->get_token()) {
1854: if ($t->[0] eq 'S') {
1855: my ($tagname, $attr) = ($t->[1],$t->[2]);
1856: push(@state, $tagname);
1857: if (lc($tagname) eq 'allow') {
1858: &add_filetype($allfiles,$attr->{'src'},'src');
1859: }
1860: if (lc($tagname) eq 'img') {
1861: &add_filetype($allfiles,$attr->{'src'},'src');
1862: }
1863: if (lc($tagname) eq 'a') {
1864: &add_filetype($allfiles,$attr->{'href'},'href');
1865: }
1866: if (lc($tagname) eq 'script') {
1867: if ($attr->{'archive'} =~ /\.jar$/i) {
1868: &add_filetype($allfiles,$attr->{'archive'},'archive');
1869: } else {
1870: &add_filetype($allfiles,$attr->{'src'},'src');
1871: }
1872: }
1873: if (lc($tagname) eq 'link') {
1874: if (lc($attr->{'rel'}) eq 'stylesheet') {
1875: &add_filetype($allfiles,$attr->{'href'},'href');
1876: }
1877: }
1878: if (lc($tagname) eq 'object' ||
1879: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
1880: foreach my $item (keys(%javafiles)) {
1881: $javafiles{$item} = '';
1882: }
1883: }
1884: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
1885: my $name = lc($attr->{'name'});
1886: foreach my $item (keys(%javafiles)) {
1887: if ($name eq $item) {
1888: $javafiles{$item} = $attr->{'value'};
1889: last;
1890: }
1891: }
1892: foreach my $item (keys(%mediafiles)) {
1893: if ($name eq $item) {
1894: &add_filetype($allfiles, $attr->{'value'}, 'value');
1895: last;
1896: }
1897: }
1898: }
1899: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
1900: foreach my $item (keys(%javafiles)) {
1901: if ($attr->{$item}) {
1902: $javafiles{$item} = $attr->{$item};
1903: last;
1904: }
1905: }
1906: foreach my $item (keys(%mediafiles)) {
1907: if ($attr->{$item}) {
1908: &add_filetype($allfiles,$attr->{$item},$item);
1909: last;
1910: }
1911: }
1912: }
1913: } elsif ($t->[0] eq 'E') {
1914: my ($tagname) = ($t->[1]);
1915: if ($javafiles{'codebase'} ne '') {
1916: $javafiles{'codebase'} .= '/';
1917: }
1918: if (lc($tagname) eq 'applet' ||
1919: lc($tagname) eq 'object' ||
1920: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
1921: ) {
1922: foreach my $item (keys(%javafiles)) {
1923: if ($item ne 'codebase' && $javafiles{$item} ne '') {
1924: my $file=$javafiles{'codebase'}.$javafiles{$item};
1925: &add_filetype($allfiles,$file,$item);
1926: }
1927: }
1928: }
1929: pop @state;
1930: }
1931: }
1932: return 'ok';
1933: }
1934:
1935: sub add_filetype {
1936: my ($allfiles,$file,$type)=@_;
1937: if (exists($allfiles->{$file})) {
1938: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
1939: push(@{$allfiles->{$file}}, &escape($type));
1940: }
1941: } else {
1942: @{$allfiles->{$file}} = (&escape($type));
1943: }
1944: }
1945:
1946: sub removeuploadedurl {
1947: my ($url)=@_;
1948: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
1949: return &removeuserfile($uname,$udom,$fname);
1950: }
1951:
1952: sub removeuserfile {
1953: my ($docuname,$docudom,$fname)=@_;
1954: my $home=&homeserver($docuname,$docudom);
1955: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
1956: if ($result eq 'ok') {
1957: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
1958: my $metafile = $fname.'.meta';
1959: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
1960: my $url = "/uploaded/$docudom/$docuname/$fname";
1961: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
1962: my $sqlresult =
1963: &update_portfolio_table($docuname,$docudom,$file,
1964: 'portfolio_metadata',$group,
1965: 'delete');
1966: }
1967: }
1968: return $result;
1969: }
1970:
1971: sub mkdiruserfile {
1972: my ($docuname,$docudom,$dir)=@_;
1973: my $home=&homeserver($docuname,$docudom);
1974: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
1975: }
1976:
1977: sub renameuserfile {
1978: my ($docuname,$docudom,$old,$new)=@_;
1979: my $home=&homeserver($docuname,$docudom);
1980: my $result = &reply("renameuserfile:$docudom:$docuname:".
1981: &escape("$old").':'.&escape("$new"),$home);
1982: if ($result eq 'ok') {
1983: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
1984: my $oldmeta = $old.'.meta';
1985: my $newmeta = $new.'.meta';
1986: my $metaresult =
1987: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
1988: my $url = "/uploaded/$docudom/$docuname/$old";
1989: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
1990: my $sqlresult =
1991: &update_portfolio_table($docuname,$docudom,$file,
1992: 'portfolio_metadata',$group,
1993: 'delete');
1994: }
1995: }
1996: return $result;
1997: }
1998:
1999: # ------------------------------------------------------------------------- Log
2000:
2001: sub log {
2002: my ($dom,$nam,$hom,$what)=@_;
2003: return critical("log:$dom:$nam:$what",$hom);
2004: }
2005:
2006: # ------------------------------------------------------------------ Course Log
2007: #
2008: # This routine flushes several buffers of non-mission-critical nature
2009: #
2010:
2011: sub flushcourselogs {
2012: &logthis('Flushing log buffers');
2013: #
2014: # course logs
2015: # This is a log of all transactions in a course, which can be used
2016: # for data mining purposes
2017: #
2018: # It also collects the courseid database, which lists last transaction
2019: # times and course titles for all courseids
2020: #
2021: my %courseidbuffer=();
2022: foreach my $crsid (keys %courselogs) {
2023: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
2024: &escape($courselogs{$crsid}),
2025: $coursehombuf{$crsid}) eq 'ok') {
2026: delete $courselogs{$crsid};
2027: } else {
2028: &logthis('Failed to flush log buffer for '.$crsid);
2029: if (length($courselogs{$crsid})>40000) {
2030: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
2031: " exceeded maximum size, deleting.</font>");
2032: delete $courselogs{$crsid};
2033: }
2034: }
2035: if ($courseidbuffer{$coursehombuf{$crsid}}) {
2036: $courseidbuffer{$coursehombuf{$crsid}}.='&'.
2037: &escape($crsid).'='.&escape($coursedescrbuf{$crsid}).
2038: ':'.&escape($courseinstcodebuf{$crsid}).':'.&escape($courseownerbuf{$crsid}).':'.&escape($coursetypebuf{$crsid});
2039: } else {
2040: $courseidbuffer{$coursehombuf{$crsid}}=
2041: &escape($crsid).'='.&escape($coursedescrbuf{$crsid}).
2042: ':'.&escape($courseinstcodebuf{$crsid}).':'.&escape($courseownerbuf{$crsid}).':'.&escape($coursetypebuf{$crsid});
2043: }
2044: }
2045: #
2046: # Write course id database (reverse lookup) to homeserver of courses
2047: # Is used in pickcourse
2048: #
2049: foreach my $crs_home (keys(%courseidbuffer)) {
2050: &courseidput(&host_domain($crs_home),$courseidbuffer{$crs_home},
2051: $crs_home);
2052: }
2053: #
2054: # File accesses
2055: # Writes to the dynamic metadata of resources to get hit counts, etc.
2056: #
2057: foreach my $entry (keys(%accesshash)) {
2058: if ($entry =~ /___count$/) {
2059: my ($dom,$name);
2060: ($dom,$name,undef)=
2061: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
2062: if (! defined($dom) || $dom eq '' ||
2063: ! defined($name) || $name eq '') {
2064: my $cid = $env{'request.course.id'};
2065: $dom = $env{'request.'.$cid.'.domain'};
2066: $name = $env{'request.'.$cid.'.num'};
2067: }
2068: my $value = $accesshash{$entry};
2069: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
2070: my %temphash=($url => $value);
2071: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
2072: if ($result eq 'ok') {
2073: delete $accesshash{$entry};
2074: } elsif ($result eq 'unknown_cmd') {
2075: # Target server has old code running on it.
2076: my %temphash=($entry => $value);
2077: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2078: delete $accesshash{$entry};
2079: }
2080: }
2081: } else {
2082: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
2083: my %temphash=($entry => $accesshash{$entry});
2084: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2085: delete $accesshash{$entry};
2086: }
2087: }
2088: }
2089: #
2090: # Roles
2091: # Reverse lookup of user roles for course faculty/staff and co-authorship
2092: #
2093: foreach my $entry (keys(%userrolehash)) {
2094: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
2095: split(/\:/,$entry);
2096: if (&Apache::lonnet::put('nohist_userroles',
2097: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
2098: $rudom,$runame) eq 'ok') {
2099: delete $userrolehash{$entry};
2100: }
2101: }
2102: #
2103: # Reverse lookup of domain roles (dc, ad, li, sc, au)
2104: #
2105: my %domrolebuffer = ();
2106: foreach my $entry (keys %domainrolehash) {
2107: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
2108: if ($domrolebuffer{$rudom}) {
2109: $domrolebuffer{$rudom}.='&'.&escape($entry).
2110: '='.&escape($domainrolehash{$entry});
2111: } else {
2112: $domrolebuffer{$rudom}.=&escape($entry).
2113: '='.&escape($domainrolehash{$entry});
2114: }
2115: delete $domainrolehash{$entry};
2116: }
2117: foreach my $dom (keys(%domrolebuffer)) {
2118: my %servers = &get_servers($dom,'library');
2119: foreach my $tryserver (keys(%servers)) {
2120: unless (&reply('domroleput:'.$dom.':'.
2121: $domrolebuffer{$dom},$tryserver) eq 'ok') {
2122: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
2123: }
2124: }
2125: }
2126: $dumpcount++;
2127: }
2128:
2129: sub courselog {
2130: my $what=shift;
2131: $what=time.':'.$what;
2132: unless ($env{'request.course.id'}) { return ''; }
2133: $coursedombuf{$env{'request.course.id'}}=
2134: $env{'course.'.$env{'request.course.id'}.'.domain'};
2135: $coursenumbuf{$env{'request.course.id'}}=
2136: $env{'course.'.$env{'request.course.id'}.'.num'};
2137: $coursehombuf{$env{'request.course.id'}}=
2138: $env{'course.'.$env{'request.course.id'}.'.home'};
2139: $coursedescrbuf{$env{'request.course.id'}}=
2140: $env{'course.'.$env{'request.course.id'}.'.description'};
2141: $courseinstcodebuf{$env{'request.course.id'}}=
2142: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
2143: $courseownerbuf{$env{'request.course.id'}}=
2144: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
2145: $coursetypebuf{$env{'request.course.id'}}=
2146: $env{'course.'.$env{'request.course.id'}.'.type'};
2147: if (defined $courselogs{$env{'request.course.id'}}) {
2148: $courselogs{$env{'request.course.id'}}.='&'.$what;
2149: } else {
2150: $courselogs{$env{'request.course.id'}}.=$what;
2151: }
2152: if (length($courselogs{$env{'request.course.id'}})>4048) {
2153: &flushcourselogs();
2154: }
2155: }
2156:
2157: sub courseacclog {
2158: my $fnsymb=shift;
2159: unless ($env{'request.course.id'}) { return ''; }
2160: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
2161: if ($fnsymb=~/(problem|exam|quiz|assess|survey|form|task|page)$/) {
2162: $what.=':POST';
2163: # FIXME: Probably ought to escape things....
2164: foreach my $key (keys(%env)) {
2165: if ($key=~/^form\.(.*)/) {
2166: $what.=':'.$1.'='.$env{$key};
2167: }
2168: }
2169: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
2170: # FIXME: We should not be depending on a form parameter that someone
2171: # editing lonsearchcat.pm might change in the future.
2172: if ($env{'form.phase'} eq 'course_search') {
2173: $what.= ':POST';
2174: # FIXME: Probably ought to escape things....
2175: foreach my $element ('courseexp','crsfulltext','crsrelated',
2176: 'crsdiscuss') {
2177: $what.=':'.$element.'='.$env{'form.'.$element};
2178: }
2179: }
2180: }
2181: &courselog($what);
2182: }
2183:
2184: sub countacc {
2185: my $url=&declutter(shift);
2186: return if (! defined($url) || $url eq '');
2187: unless ($env{'request.course.id'}) { return ''; }
2188: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
2189: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
2190: $accesshash{$key}++;
2191: }
2192:
2193: sub linklog {
2194: my ($from,$to)=@_;
2195: $from=&declutter($from);
2196: $to=&declutter($to);
2197: $accesshash{$from.'___'.$to.'___comefrom'}=1;
2198: $accesshash{$to.'___'.$from.'___goto'}=1;
2199: }
2200:
2201: sub userrolelog {
2202: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
2203: if (($trole=~/^ca/) || ($trole=~/^aa/) ||
2204: ($trole=~/^in/) || ($trole=~/^cc/) ||
2205: ($trole=~/^ep/) || ($trole=~/^cr/) ||
2206: ($trole=~/^ta/)) {
2207: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2208: $userrolehash
2209: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2210: =$tend.':'.$tstart;
2211: }
2212: if (($env{'request.role'} =~ /dc\./) &&
2213: (($trole=~/^au/) || ($trole=~/^in/) ||
2214: ($trole=~/^cc/) || ($trole=~/^ep/) ||
2215: ($trole=~/^cr/) || ($trole=~/^ta/))) {
2216: $userrolehash
2217: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
2218: =$tend.':'.$tstart;
2219: }
2220: if (($trole=~/^dc/) || ($trole=~/^ad/) ||
2221: ($trole=~/^li/) || ($trole=~/^li/) ||
2222: ($trole=~/^au/) || ($trole=~/^dg/) ||
2223: ($trole=~/^sc/)) {
2224: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2225: $domainrolehash
2226: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2227: = $tend.':'.$tstart;
2228: }
2229: }
2230:
2231: sub get_course_adv_roles {
2232: my $cid=shift;
2233: $cid=$env{'request.course.id'} unless (defined($cid));
2234: my %coursehash=&coursedescription($cid);
2235: my %nothide=();
2236: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2237: $nothide{join(':',split(/[\@\:]/,$user))}=1;
2238: }
2239: my %returnhash=();
2240: my %dumphash=
2241: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
2242: my $now=time;
2243: foreach my $entry (keys %dumphash) {
2244: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
2245: if (($tstart) && ($tstart<0)) { next; }
2246: if (($tend) && ($tend<$now)) { next; }
2247: if (($tstart) && ($now<$tstart)) { next; }
2248: my ($role,$username,$domain,$section)=split(/\:/,$entry);
2249: if ($username eq '' || $domain eq '') { next; }
2250: if ((&privileged($username,$domain)) &&
2251: (!$nothide{$username.':'.$domain})) { next; }
2252: if ($role eq 'cr') { next; }
2253: my $key=&plaintext($role);
2254: if ($section) { $key.=' (Sec/Grp '.$section.')'; }
2255: if ($returnhash{$key}) {
2256: $returnhash{$key}.=','.$username.':'.$domain;
2257: } else {
2258: $returnhash{$key}=$username.':'.$domain;
2259: }
2260: }
2261: return %returnhash;
2262: }
2263:
2264: sub get_my_roles {
2265: my ($uname,$udom,$context,$types,$roles,$roledoms)=@_;
2266: unless (defined($uname)) { $uname=$env{'user.name'}; }
2267: unless (defined($udom)) { $udom=$env{'user.domain'}; }
2268: my %dumphash;
2269: if ($context eq 'userroles') {
2270: %dumphash = &dump('roles',$udom,$uname);
2271: } else {
2272: %dumphash=
2273: &dump('nohist_userroles',$udom,$uname);
2274: }
2275: my %returnhash=();
2276: my $now=time;
2277: foreach my $entry (keys(%dumphash)) {
2278: my ($role,$tend,$tstart);
2279: if ($context eq 'userroles') {
2280: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
2281: } else {
2282: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
2283: }
2284: if (($tstart) && ($tstart<0)) { next; }
2285: my $status = 'active';
2286: if (($tend) && ($tend<$now)) {
2287: $status = 'previous';
2288: }
2289: if (($tstart) && ($now<$tstart)) {
2290: $status = 'future';
2291: }
2292: if (ref($types) eq 'ARRAY') {
2293: if (!grep(/^\Q$status\E$/,@{$types})) {
2294: next;
2295: }
2296: } else {
2297: if ($status ne 'active') {
2298: next;
2299: }
2300: }
2301: my ($rolecode,$username,$domain,$section,$area);
2302: if ($context eq 'userroles') {
2303: ($area,$rolecode) = split(/_/,$entry);
2304: (undef,$domain,$username,$section) = split(/\//,$area);
2305: } else {
2306: ($role,$username,$domain,$section) = split(/\:/,$entry);
2307: }
2308: if (ref($roledoms) eq 'ARRAY') {
2309: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
2310: next;
2311: }
2312: }
2313: if (ref($roles) eq 'ARRAY') {
2314: if (!grep(/^\Q$role\E$/,@{$roles})) {
2315: next;
2316: }
2317: }
2318: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
2319: }
2320: return %returnhash;
2321: }
2322:
2323: # ----------------------------------------------------- Frontpage Announcements
2324: #
2325: #
2326:
2327: sub postannounce {
2328: my ($server,$text)=@_;
2329: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
2330: unless ($text=~/\w/) { $text=''; }
2331: return &reply('setannounce:'.&escape($text),$server);
2332: }
2333:
2334: sub getannounce {
2335:
2336: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
2337: my $announcement='';
2338: while (my $line = <$fh>) { $announcement .= $line; }
2339: close($fh);
2340: if ($announcement=~/\w/) {
2341: return
2342: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
2343: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
2344: } else {
2345: return '';
2346: }
2347: } else {
2348: return '';
2349: }
2350: }
2351:
2352: # ---------------------------------------------------------- Course ID routines
2353: # Deal with domain's nohist_courseid.db files
2354: #
2355:
2356: sub courseidput {
2357: my ($domain,$what,$coursehome)=@_;
2358: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
2359: }
2360:
2361: sub courseiddump {
2362: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,$coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok)=@_;
2363: my %returnhash=();
2364: unless ($domfilter) { $domfilter=''; }
2365: my %libserv = &all_library();
2366: foreach my $tryserver (keys(%libserv)) {
2367: if ( ( $hostidflag == 1
2368: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
2369: || (!defined($hostidflag)) ) {
2370:
2371: if ($domfilter eq ''
2372: || (&host_domain($tryserver) eq $domfilter)) {
2373: foreach my $line (
2374: split(/\&/,&reply('courseiddump:'.&host_domain($tryserver).':'.
2375: $sincefilter.':'.&escape($descfilter).':'.
2376: &escape($instcodefilter).':'.&escape($ownerfilter).':'.&escape($coursefilter).':'.&escape($typefilter).':'.&escape($regexp_ok),
2377: $tryserver))) {
2378: my ($key,$value)=split(/\=/,$line,2);
2379: if (($key) && ($value)) {
2380: $returnhash{&unescape($key)}=$value;
2381: }
2382: }
2383: }
2384: }
2385: }
2386: return %returnhash;
2387: }
2388:
2389: # ---------------------------------------------------------- DC e-mail
2390:
2391: sub dcmailput {
2392: my ($domain,$msgid,$message,$server)=@_;
2393: my $status = &Apache::lonnet::critical(
2394: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
2395: &escape($message),$server);
2396: return $status;
2397: }
2398:
2399: sub dcmaildump {
2400: my ($dom,$startdate,$enddate,$senders) = @_;
2401: my %returnhash=();
2402:
2403: if (defined(&domain($dom,'primary'))) {
2404: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
2405: &escape($enddate).':';
2406: my @esc_senders=map { &escape($_)} @$senders;
2407: $cmd.=&escape(join('&',@esc_senders));
2408: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
2409: my ($key,$value) = split(/\=/,$line,2);
2410: if (($key) && ($value)) {
2411: $returnhash{&unescape($key)} = &unescape($value);
2412: }
2413: }
2414: }
2415: return %returnhash;
2416: }
2417: # ---------------------------------------------------------- Domain roles
2418:
2419: sub get_domain_roles {
2420: my ($dom,$roles,$startdate,$enddate)=@_;
2421: if (undef($startdate) || $startdate eq '') {
2422: $startdate = '.';
2423: }
2424: if (undef($enddate) || $enddate eq '') {
2425: $enddate = '.';
2426: }
2427: my $rolelist = join(':',@{$roles});
2428: my %personnel = ();
2429:
2430: my %servers = &get_servers($dom,'library');
2431: foreach my $tryserver (keys(%servers)) {
2432: %{$personnel{$tryserver}}=();
2433: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
2434: &escape($startdate).':'.
2435: &escape($enddate).':'.
2436: &escape($rolelist), $tryserver))) {
2437: my ($key,$value) = split(/\=/,$line,2);
2438: if (($key) && ($value)) {
2439: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
2440: }
2441: }
2442: }
2443: return %personnel;
2444: }
2445:
2446: # ----------------------------------------------------------- Check out an item
2447:
2448: sub get_first_access {
2449: my ($type,$argsymb)=@_;
2450: my ($symb,$courseid,$udom,$uname)=&whichuser();
2451: if ($argsymb) { $symb=$argsymb; }
2452: my ($map,$id,$res)=&decode_symb($symb);
2453: if ($type eq 'map') {
2454: $res=&symbread($map);
2455: } else {
2456: $res=$symb;
2457: }
2458: my %times=&get('firstaccesstimes',["$courseid\0$res"],$udom,$uname);
2459: return $times{"$courseid\0$res"};
2460: }
2461:
2462: sub set_first_access {
2463: my ($type)=@_;
2464: my ($symb,$courseid,$udom,$uname)=&whichuser();
2465: my ($map,$id,$res)=&decode_symb($symb);
2466: if ($type eq 'map') {
2467: $res=&symbread($map);
2468: } else {
2469: $res=$symb;
2470: }
2471: my $firstaccess=&get_first_access($type,$symb);
2472: if (!$firstaccess) {
2473: return &put('firstaccesstimes',{"$courseid\0$res"=>time},$udom,$uname);
2474: }
2475: return 'already_set';
2476: }
2477:
2478: sub checkout {
2479: my ($symb,$tuname,$tudom,$tcrsid)=@_;
2480: my $now=time;
2481: my $lonhost=$perlvar{'lonHostID'};
2482: my $infostr=&escape(
2483: 'CHECKOUTTOKEN&'.
2484: $tuname.'&'.
2485: $tudom.'&'.
2486: $tcrsid.'&'.
2487: $symb.'&'.
2488: $now.'&'.$ENV{'REMOTE_ADDR'});
2489: my $token=&reply('tmpput:'.$infostr,$lonhost);
2490: if ($token=~/^error\:/) {
2491: &logthis("<font color=\"blue\">WARNING: ".
2492: "Checkout tmpput failed ".$tudom.' - '.$tuname.' - '.$symb.
2493: "</font>");
2494: return '';
2495: }
2496:
2497: $token=~s/^(\d+)\_.*\_(\d+)$/$1\*$2\*$lonhost/;
2498: $token=~tr/a-z/A-Z/;
2499:
2500: my %infohash=('resource.0.outtoken' => $token,
2501: 'resource.0.checkouttime' => $now,
2502: 'resource.0.outremote' => $ENV{'REMOTE_ADDR'});
2503:
2504: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
2505: return '';
2506: } else {
2507: &logthis("<font color=\"blue\">WARNING: ".
2508: "Checkout cstore failed ".$tudom.' - '.$tuname.' - '.$symb.
2509: "</font>");
2510: }
2511:
2512: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
2513: &escape('Checkout '.$infostr.' - '.
2514: $token)) ne 'ok') {
2515: return '';
2516: } else {
2517: &logthis("<font color=\"blue\">WARNING: ".
2518: "Checkout log failed ".$tudom.' - '.$tuname.' - '.$symb.
2519: "</font>");
2520: }
2521: return $token;
2522: }
2523:
2524: # ------------------------------------------------------------ Check in an item
2525:
2526: sub checkin {
2527: my $token=shift;
2528: my $now=time;
2529: my ($ta,$tb,$lonhost)=split(/\*/,$token);
2530: $lonhost=~tr/A-Z/a-z/;
2531: my $dtoken=$ta.'_'.&hostname($lonhost).'_'.$tb;
2532: $dtoken=~s/\W/\_/g;
2533: my ($dummy,$tuname,$tudom,$tcrsid,$symb,$chtim,$rmaddr)=
2534: split(/\&/,&unescape(&reply('tmpget:'.$dtoken,$lonhost)));
2535:
2536: unless (($tuname) && ($tudom)) {
2537: &logthis('Check in '.$token.' ('.$dtoken.') failed');
2538: return '';
2539: }
2540:
2541: unless (&allowed('mgr',$tcrsid)) {
2542: &logthis('Check in '.$token.' ('.$dtoken.') unauthorized: '.
2543: $env{'user.name'}.' - '.$env{'user.domain'});
2544: return '';
2545: }
2546:
2547: my %infohash=('resource.0.intoken' => $token,
2548: 'resource.0.checkintime' => $now,
2549: 'resource.0.inremote' => $ENV{'REMOTE_ADDR'});
2550:
2551: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
2552: return '';
2553: }
2554:
2555: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
2556: &escape('Checkin - '.$token)) ne 'ok') {
2557: return '';
2558: }
2559:
2560: return ($symb,$tuname,$tudom,$tcrsid);
2561: }
2562:
2563: # --------------------------------------------- Set Expire Date for Spreadsheet
2564:
2565: sub expirespread {
2566: my ($uname,$udom,$stype,$usymb)=@_;
2567: my $cid=$env{'request.course.id'};
2568: if ($cid) {
2569: my $now=time;
2570: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
2571: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
2572: $env{'course.'.$cid.'.num'}.
2573: ':nohist_expirationdates:'.
2574: &escape($key).'='.$now,
2575: $env{'course.'.$cid.'.home'})
2576: }
2577: return 'ok';
2578: }
2579:
2580: # ----------------------------------------------------- Devalidate Spreadsheets
2581:
2582: sub devalidate {
2583: my ($symb,$uname,$udom)=@_;
2584: my $cid=$env{'request.course.id'};
2585: if ($cid) {
2586: # delete the stored spreadsheets for
2587: # - the student level sheet of this user in course's homespace
2588: # - the assessment level sheet for this resource
2589: # for this user in user's homespace
2590: # - current conditional state info
2591: my $key=$uname.':'.$udom.':';
2592: my $status=
2593: &del('nohist_calculatedsheets',
2594: [$key.'studentcalc:'],
2595: $env{'course.'.$cid.'.domain'},
2596: $env{'course.'.$cid.'.num'})
2597: .' '.
2598: &del('nohist_calculatedsheets_'.$cid,
2599: [$key.'assesscalc:'.$symb],$udom,$uname);
2600: unless ($status eq 'ok ok') {
2601: &logthis('Could not devalidate spreadsheet '.
2602: $uname.' at '.$udom.' for '.
2603: $symb.': '.$status);
2604: }
2605: &delenv('user.state.'.$cid);
2606: }
2607: }
2608:
2609: sub get_scalar {
2610: my ($string,$end) = @_;
2611: my $value;
2612: if ($$string =~ s/^([^&]*?)($end)/$2/) {
2613: $value = $1;
2614: } elsif ($$string =~ s/^([^&]*?)&//) {
2615: $value = $1;
2616: }
2617: return &unescape($value);
2618: }
2619:
2620: sub array2str {
2621: my (@array) = @_;
2622: my $result=&arrayref2str(\@array);
2623: $result=~s/^__ARRAY_REF__//;
2624: $result=~s/__END_ARRAY_REF__$//;
2625: return $result;
2626: }
2627:
2628: sub arrayref2str {
2629: my ($arrayref) = @_;
2630: my $result='__ARRAY_REF__';
2631: foreach my $elem (@$arrayref) {
2632: if(ref($elem) eq 'ARRAY') {
2633: $result.=&arrayref2str($elem).'&';
2634: } elsif(ref($elem) eq 'HASH') {
2635: $result.=&hashref2str($elem).'&';
2636: } elsif(ref($elem)) {
2637: #print("Got a ref of ".(ref($elem))." skipping.");
2638: } else {
2639: $result.=&escape($elem).'&';
2640: }
2641: }
2642: $result=~s/\&$//;
2643: $result .= '__END_ARRAY_REF__';
2644: return $result;
2645: }
2646:
2647: sub hash2str {
2648: my (%hash) = @_;
2649: my $result=&hashref2str(\%hash);
2650: $result=~s/^__HASH_REF__//;
2651: $result=~s/__END_HASH_REF__$//;
2652: return $result;
2653: }
2654:
2655: sub hashref2str {
2656: my ($hashref)=@_;
2657: my $result='__HASH_REF__';
2658: foreach my $key (sort(keys(%$hashref))) {
2659: if (ref($key) eq 'ARRAY') {
2660: $result.=&arrayref2str($key).'=';
2661: } elsif (ref($key) eq 'HASH') {
2662: $result.=&hashref2str($key).'=';
2663: } elsif (ref($key)) {
2664: $result.='=';
2665: #print("Got a ref of ".(ref($key))." skipping.");
2666: } else {
2667: if ($key) {$result.=&escape($key).'=';} else { last; }
2668: }
2669:
2670: if(ref($hashref->{$key}) eq 'ARRAY') {
2671: $result.=&arrayref2str($hashref->{$key}).'&';
2672: } elsif(ref($hashref->{$key}) eq 'HASH') {
2673: $result.=&hashref2str($hashref->{$key}).'&';
2674: } elsif(ref($hashref->{$key})) {
2675: $result.='&';
2676: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
2677: } else {
2678: $result.=&escape($hashref->{$key}).'&';
2679: }
2680: }
2681: $result=~s/\&$//;
2682: $result .= '__END_HASH_REF__';
2683: return $result;
2684: }
2685:
2686: sub str2hash {
2687: my ($string)=@_;
2688: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
2689: return %$hash;
2690: }
2691:
2692: sub str2hashref {
2693: my ($string) = @_;
2694:
2695: my %hash;
2696:
2697: if($string !~ /^__HASH_REF__/) {
2698: if (! ($string eq '' || !defined($string))) {
2699: $hash{'error'}='Not hash reference';
2700: }
2701: return (\%hash, $string);
2702: }
2703:
2704: $string =~ s/^__HASH_REF__//;
2705:
2706: while($string !~ /^__END_HASH_REF__/) {
2707: #key
2708: my $key='';
2709: if($string =~ /^__HASH_REF__/) {
2710: ($key, $string)=&str2hashref($string);
2711: if(defined($key->{'error'})) {
2712: $hash{'error'}='Bad data';
2713: return (\%hash, $string);
2714: }
2715: } elsif($string =~ /^__ARRAY_REF__/) {
2716: ($key, $string)=&str2arrayref($string);
2717: if($key->[0] eq 'Array reference error') {
2718: $hash{'error'}='Bad data';
2719: return (\%hash, $string);
2720: }
2721: } else {
2722: $string =~ s/^(.*?)=//;
2723: $key=&unescape($1);
2724: }
2725: $string =~ s/^=//;
2726:
2727: #value
2728: my $value='';
2729: if($string =~ /^__HASH_REF__/) {
2730: ($value, $string)=&str2hashref($string);
2731: if(defined($value->{'error'})) {
2732: $hash{'error'}='Bad data';
2733: return (\%hash, $string);
2734: }
2735: } elsif($string =~ /^__ARRAY_REF__/) {
2736: ($value, $string)=&str2arrayref($string);
2737: if($value->[0] eq 'Array reference error') {
2738: $hash{'error'}='Bad data';
2739: return (\%hash, $string);
2740: }
2741: } else {
2742: $value=&get_scalar(\$string,'__END_HASH_REF__');
2743: }
2744: $string =~ s/^&//;
2745:
2746: $hash{$key}=$value;
2747: }
2748:
2749: $string =~ s/^__END_HASH_REF__//;
2750:
2751: return (\%hash, $string);
2752: }
2753:
2754: sub str2array {
2755: my ($string)=@_;
2756: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
2757: return @$array;
2758: }
2759:
2760: sub str2arrayref {
2761: my ($string) = @_;
2762: my @array;
2763:
2764: if($string !~ /^__ARRAY_REF__/) {
2765: if (! ($string eq '' || !defined($string))) {
2766: $array[0]='Array reference error';
2767: }
2768: return (\@array, $string);
2769: }
2770:
2771: $string =~ s/^__ARRAY_REF__//;
2772:
2773: while($string !~ /^__END_ARRAY_REF__/) {
2774: my $value='';
2775: if($string =~ /^__HASH_REF__/) {
2776: ($value, $string)=&str2hashref($string);
2777: if(defined($value->{'error'})) {
2778: $array[0] ='Array reference error';
2779: return (\@array, $string);
2780: }
2781: } elsif($string =~ /^__ARRAY_REF__/) {
2782: ($value, $string)=&str2arrayref($string);
2783: if($value->[0] eq 'Array reference error') {
2784: $array[0] ='Array reference error';
2785: return (\@array, $string);
2786: }
2787: } else {
2788: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
2789: }
2790: $string =~ s/^&//;
2791:
2792: push(@array, $value);
2793: }
2794:
2795: $string =~ s/^__END_ARRAY_REF__//;
2796:
2797: return (\@array, $string);
2798: }
2799:
2800: # -------------------------------------------------------------------Temp Store
2801:
2802: sub tmpreset {
2803: my ($symb,$namespace,$domain,$stuname) = @_;
2804: if (!$symb) {
2805: $symb=&symbread();
2806: if (!$symb) { $symb= $env{'request.url'}; }
2807: }
2808: $symb=escape($symb);
2809:
2810: if (!$namespace) { $namespace=$env{'request.state'}; }
2811: $namespace=~s/\//\_/g;
2812: $namespace=~s/\W//g;
2813:
2814: if (!$domain) { $domain=$env{'user.domain'}; }
2815: if (!$stuname) { $stuname=$env{'user.name'}; }
2816: if ($domain eq 'public' && $stuname eq 'public') {
2817: $stuname=$ENV{'REMOTE_ADDR'};
2818: }
2819: my $path=$perlvar{'lonDaemons'}.'/tmp';
2820: my %hash;
2821: if (tie(%hash,'GDBM_File',
2822: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
2823: &GDBM_WRCREAT(),0640)) {
2824: foreach my $key (keys %hash) {
2825: if ($key=~ /:$symb/) {
2826: delete($hash{$key});
2827: }
2828: }
2829: }
2830: }
2831:
2832: sub tmpstore {
2833: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
2834:
2835: if (!$symb) {
2836: $symb=&symbread();
2837: if (!$symb) { $symb= $env{'request.url'}; }
2838: }
2839: $symb=escape($symb);
2840:
2841: if (!$namespace) {
2842: # I don't think we would ever want to store this for a course.
2843: # it seems this will only be used if we don't have a course.
2844: #$namespace=$env{'request.course.id'};
2845: #if (!$namespace) {
2846: $namespace=$env{'request.state'};
2847: #}
2848: }
2849: $namespace=~s/\//\_/g;
2850: $namespace=~s/\W//g;
2851: if (!$domain) { $domain=$env{'user.domain'}; }
2852: if (!$stuname) { $stuname=$env{'user.name'}; }
2853: if ($domain eq 'public' && $stuname eq 'public') {
2854: $stuname=$ENV{'REMOTE_ADDR'};
2855: }
2856: my $now=time;
2857: my %hash;
2858: my $path=$perlvar{'lonDaemons'}.'/tmp';
2859: if (tie(%hash,'GDBM_File',
2860: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
2861: &GDBM_WRCREAT(),0640)) {
2862: $hash{"version:$symb"}++;
2863: my $version=$hash{"version:$symb"};
2864: my $allkeys='';
2865: foreach my $key (keys(%$storehash)) {
2866: $allkeys.=$key.':';
2867: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
2868: }
2869: $hash{"$version:$symb:timestamp"}=$now;
2870: $allkeys.='timestamp';
2871: $hash{"$version:keys:$symb"}=$allkeys;
2872: if (untie(%hash)) {
2873: return 'ok';
2874: } else {
2875: return "error:$!";
2876: }
2877: } else {
2878: return "error:$!";
2879: }
2880: }
2881:
2882: # -----------------------------------------------------------------Temp Restore
2883:
2884: sub tmprestore {
2885: my ($symb,$namespace,$domain,$stuname) = @_;
2886:
2887: if (!$symb) {
2888: $symb=&symbread();
2889: if (!$symb) { $symb= $env{'request.url'}; }
2890: }
2891: $symb=escape($symb);
2892:
2893: if (!$namespace) { $namespace=$env{'request.state'}; }
2894:
2895: if (!$domain) { $domain=$env{'user.domain'}; }
2896: if (!$stuname) { $stuname=$env{'user.name'}; }
2897: if ($domain eq 'public' && $stuname eq 'public') {
2898: $stuname=$ENV{'REMOTE_ADDR'};
2899: }
2900: my %returnhash;
2901: $namespace=~s/\//\_/g;
2902: $namespace=~s/\W//g;
2903: my %hash;
2904: my $path=$perlvar{'lonDaemons'}.'/tmp';
2905: if (tie(%hash,'GDBM_File',
2906: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
2907: &GDBM_READER(),0640)) {
2908: my $version=$hash{"version:$symb"};
2909: $returnhash{'version'}=$version;
2910: my $scope;
2911: for ($scope=1;$scope<=$version;$scope++) {
2912: my $vkeys=$hash{"$scope:keys:$symb"};
2913: my @keys=split(/:/,$vkeys);
2914: my $key;
2915: $returnhash{"$scope:keys"}=$vkeys;
2916: foreach $key (@keys) {
2917: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
2918: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
2919: }
2920: }
2921: if (!(untie(%hash))) {
2922: return "error:$!";
2923: }
2924: } else {
2925: return "error:$!";
2926: }
2927: return %returnhash;
2928: }
2929:
2930: # ----------------------------------------------------------------------- Store
2931:
2932: sub store {
2933: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
2934: my $home='';
2935:
2936: if ($stuname) { $home=&homeserver($stuname,$domain); }
2937:
2938: $symb=&symbclean($symb);
2939: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
2940:
2941: if (!$domain) { $domain=$env{'user.domain'}; }
2942: if (!$stuname) { $stuname=$env{'user.name'}; }
2943:
2944: &devalidate($symb,$stuname,$domain);
2945:
2946: $symb=escape($symb);
2947: if (!$namespace) {
2948: unless ($namespace=$env{'request.course.id'}) {
2949: return '';
2950: }
2951: }
2952: if (!$home) { $home=$env{'user.home'}; }
2953:
2954: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
2955: $$storehash{'host'}=$perlvar{'lonHostID'};
2956:
2957: my $namevalue='';
2958: foreach my $key (keys(%$storehash)) {
2959: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
2960: }
2961: $namevalue=~s/\&$//;
2962: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
2963: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
2964: }
2965:
2966: # -------------------------------------------------------------- Critical Store
2967:
2968: sub cstore {
2969: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
2970: my $home='';
2971:
2972: if ($stuname) { $home=&homeserver($stuname,$domain); }
2973:
2974: $symb=&symbclean($symb);
2975: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
2976:
2977: if (!$domain) { $domain=$env{'user.domain'}; }
2978: if (!$stuname) { $stuname=$env{'user.name'}; }
2979:
2980: &devalidate($symb,$stuname,$domain);
2981:
2982: $symb=escape($symb);
2983: if (!$namespace) {
2984: unless ($namespace=$env{'request.course.id'}) {
2985: return '';
2986: }
2987: }
2988: if (!$home) { $home=$env{'user.home'}; }
2989:
2990: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
2991: $$storehash{'host'}=$perlvar{'lonHostID'};
2992:
2993: my $namevalue='';
2994: foreach my $key (keys(%$storehash)) {
2995: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
2996: }
2997: $namevalue=~s/\&$//;
2998: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
2999: return critical
3000: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3001: }
3002:
3003: # --------------------------------------------------------------------- Restore
3004:
3005: sub restore {
3006: my ($symb,$namespace,$domain,$stuname) = @_;
3007: my $home='';
3008:
3009: if ($stuname) { $home=&homeserver($stuname,$domain); }
3010:
3011: if (!$symb) {
3012: unless ($symb=escape(&symbread())) { return ''; }
3013: } else {
3014: $symb=&escape(&symbclean($symb));
3015: }
3016: if (!$namespace) {
3017: unless ($namespace=$env{'request.course.id'}) {
3018: return '';
3019: }
3020: }
3021: if (!$domain) { $domain=$env{'user.domain'}; }
3022: if (!$stuname) { $stuname=$env{'user.name'}; }
3023: if (!$home) { $home=$env{'user.home'}; }
3024: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
3025:
3026: my %returnhash=();
3027: foreach my $line (split(/\&/,$answer)) {
3028: my ($name,$value)=split(/\=/,$line);
3029: $returnhash{&unescape($name)}=&thaw_unescape($value);
3030: }
3031: my $version;
3032: for ($version=1;$version<=$returnhash{'version'};$version++) {
3033: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
3034: $returnhash{$item}=$returnhash{$version.':'.$item};
3035: }
3036: }
3037: return %returnhash;
3038: }
3039:
3040: # ---------------------------------------------------------- Course Description
3041:
3042: sub coursedescription {
3043: my ($courseid,$args)=@_;
3044: $courseid=~s/^\///;
3045: $courseid=~s/\_/\//g;
3046: my ($cdomain,$cnum)=split(/\//,$courseid);
3047: my $chome=&homeserver($cnum,$cdomain);
3048: my $normalid=$cdomain.'_'.$cnum;
3049: # need to always cache even if we get errors otherwise we keep
3050: # trying and trying and trying to get the course description.
3051: my %envhash=();
3052: my %returnhash=();
3053:
3054: my $expiretime=600;
3055: if ($env{'request.course.id'} eq $normalid) {
3056: $expiretime=120;
3057: }
3058:
3059: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
3060: if (!$args->{'freshen_cache'}
3061: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
3062: foreach my $key (keys(%env)) {
3063: next if ($key !~ /^\Q$prefix\E(.*)/);
3064: my ($setting) = $1;
3065: $returnhash{$setting} = $env{$key};
3066: }
3067: return %returnhash;
3068: }
3069:
3070: # get the data agin
3071: if (!$args->{'one_time'}) {
3072: $envhash{'course.'.$normalid.'.last_cache'}=time;
3073: }
3074:
3075: if ($chome ne 'no_host') {
3076: %returnhash=&dump('environment',$cdomain,$cnum);
3077: if (!exists($returnhash{'con_lost'})) {
3078: $returnhash{'home'}= $chome;
3079: $returnhash{'domain'} = $cdomain;
3080: $returnhash{'num'} = $cnum;
3081: if (!defined($returnhash{'type'})) {
3082: $returnhash{'type'} = 'Course';
3083: }
3084: while (my ($name,$value) = each %returnhash) {
3085: $envhash{'course.'.$normalid.'.'.$name}=$value;
3086: }
3087: $returnhash{'url'}=&clutter($returnhash{'url'});
3088: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
3089: $env{'user.name'}.'_'.$cdomain.'_'.$cnum;
3090: $envhash{'course.'.$normalid.'.home'}=$chome;
3091: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
3092: $envhash{'course.'.$normalid.'.num'}=$cnum;
3093: }
3094: }
3095: if (!$args->{'one_time'}) {
3096: &appenv(%envhash);
3097: }
3098: return %returnhash;
3099: }
3100:
3101: # -------------------------------------------------See if a user is privileged
3102:
3103: sub privileged {
3104: my ($username,$domain)=@_;
3105: my $rolesdump=&reply("dump:$domain:$username:roles",
3106: &homeserver($username,$domain));
3107: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return 0; }
3108: my $now=time;
3109: if ($rolesdump ne '') {
3110: foreach my $entry (split(/&/,$rolesdump)) {
3111: if ($entry!~/^rolesdef_/) {
3112: my ($area,$role)=split(/=/,$entry);
3113: $area=~s/\_\w\w$//;
3114: my ($trole,$tend,$tstart)=split(/_/,$role);
3115: if (($trole eq 'dc') || ($trole eq 'su')) {
3116: my $active=1;
3117: if ($tend) {
3118: if ($tend<$now) { $active=0; }
3119: }
3120: if ($tstart) {
3121: if ($tstart>$now) { $active=0; }
3122: }
3123: if ($active) { return 1; }
3124: }
3125: }
3126: }
3127: }
3128: return 0;
3129: }
3130:
3131: # -------------------------------------------------------- Get user privileges
3132:
3133: sub rolesinit {
3134: my ($domain,$username,$authhost)=@_;
3135: my $rolesdump=reply("dump:$domain:$username:roles",$authhost);
3136: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return ''; }
3137: my %allroles=();
3138: my %allgroups=();
3139: my $now=time;
3140: my %userroles = ('user.login.time' => $now);
3141: my $group_privs;
3142:
3143: if ($rolesdump ne '') {
3144: foreach my $entry (split(/&/,$rolesdump)) {
3145: if ($entry!~/^rolesdef_/) {
3146: my ($area,$role)=split(/=/,$entry);
3147: $area=~s/\_\w\w$//;
3148: my ($trole,$tend,$tstart,$group_privs);
3149: if ($role=~/^cr/) {
3150: if ($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
3151: ($trole,my $trest)=($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|);
3152: ($tend,$tstart)=split('_',$trest);
3153: } else {
3154: $trole=$role;
3155: }
3156: } elsif ($role =~ m|^gr/|) {
3157: ($trole,$tend,$tstart) = split(/_/,$role);
3158: ($trole,$group_privs) = split(/\//,$trole);
3159: $group_privs = &unescape($group_privs);
3160: } else {
3161: ($trole,$tend,$tstart)=split(/_/,$role);
3162: }
3163: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
3164: $username);
3165: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
3166: if (($tend!=0) && ($tend<$now)) { $trole=''; }
3167: if (($tstart!=0) && ($tstart>$now)) { $trole=''; }
3168: if (($area ne '') && ($trole ne '')) {
3169: my $spec=$trole.'.'.$area;
3170: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
3171: if ($trole =~ /^cr\//) {
3172: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
3173: } elsif ($trole eq 'gr') {
3174: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
3175: } else {
3176: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
3177: }
3178: }
3179: }
3180: }
3181: my ($author,$adv) = &set_userprivs(\%userroles,\%allroles,\%allgroups);
3182: $userroles{'user.adv'} = $adv;
3183: $userroles{'user.author'} = $author;
3184: $env{'user.adv'}=$adv;
3185: }
3186: return \%userroles;
3187: }
3188:
3189: sub set_arearole {
3190: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
3191: # log the associated role with the area
3192: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
3193: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
3194: }
3195:
3196: sub custom_roleprivs {
3197: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
3198: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
3199: my $homsvr=homeserver($rauthor,$rdomain);
3200: if (&hostname($homsvr) ne '') {
3201: my ($rdummy,$roledef)=
3202: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
3203: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
3204: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
3205: if (defined($syspriv)) {
3206: $$allroles{'cm./'}.=':'.$syspriv;
3207: $$allroles{$spec.'./'}.=':'.$syspriv;
3208: }
3209: if ($tdomain ne '') {
3210: if (defined($dompriv)) {
3211: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
3212: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
3213: }
3214: if (($trest ne '') && (defined($coursepriv))) {
3215: $$allroles{'cm.'.$area}.=':'.$coursepriv;
3216: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
3217: }
3218: }
3219: }
3220: }
3221: }
3222:
3223: sub group_roleprivs {
3224: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
3225: my $access = 1;
3226: my $now = time;
3227: if (($tend!=0) && ($tend<$now)) { $access = 0; }
3228: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
3229: if ($access) {
3230: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
3231: $$allgroups{$course}{$group} .=':'.$group_privs;
3232: }
3233: }
3234:
3235: sub standard_roleprivs {
3236: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
3237: if (defined($pr{$trole.':s'})) {
3238: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
3239: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
3240: }
3241: if ($tdomain ne '') {
3242: if (defined($pr{$trole.':d'})) {
3243: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
3244: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
3245: }
3246: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
3247: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
3248: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
3249: }
3250: }
3251: }
3252:
3253: sub set_userprivs {
3254: my ($userroles,$allroles,$allgroups) = @_;
3255: my $author=0;
3256: my $adv=0;
3257: my %grouproles = ();
3258: if (keys(%{$allgroups}) > 0) {
3259: foreach my $role (keys %{$allroles}) {
3260: my ($trole,$area,$sec,$extendedarea);
3261: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
3262: $trole = $1;
3263: $area = $2;
3264: $sec = $3;
3265: $extendedarea = $area.$sec;
3266: if (exists($$allgroups{$area})) {
3267: foreach my $group (keys(%{$$allgroups{$area}})) {
3268: my $spec = $trole.'.'.$extendedarea;
3269: $grouproles{$spec.'.'.$area.'/'.$group} =
3270: $$allgroups{$area}{$group};
3271: }
3272: }
3273: }
3274: }
3275: }
3276: foreach my $group (keys(%grouproles)) {
3277: $$allroles{$group} = $grouproles{$group};
3278: }
3279: foreach my $role (keys(%{$allroles})) {
3280: my %thesepriv;
3281: if (($role=~/^au/) || ($role=~/^ca/)) { $author=1; }
3282: foreach my $item (split(/:/,$$allroles{$role})) {
3283: if ($item ne '') {
3284: my ($privilege,$restrictions)=split(/&/,$item);
3285: if ($restrictions eq '') {
3286: $thesepriv{$privilege}='F';
3287: } elsif ($thesepriv{$privilege} ne 'F') {
3288: $thesepriv{$privilege}.=$restrictions;
3289: }
3290: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
3291: }
3292: }
3293: my $thesestr='';
3294: foreach my $priv (keys(%thesepriv)) {
3295: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
3296: }
3297: $userroles->{'user.priv.'.$role} = $thesestr;
3298: }
3299: return ($author,$adv);
3300: }
3301:
3302: # --------------------------------------------------------------- get interface
3303:
3304: sub get {
3305: my ($namespace,$storearr,$udomain,$uname)=@_;
3306: my $items='';
3307: foreach my $item (@$storearr) {
3308: $items.=&escape($item).'&';
3309: }
3310: $items=~s/\&$//;
3311: if (!$udomain) { $udomain=$env{'user.domain'}; }
3312: if (!$uname) { $uname=$env{'user.name'}; }
3313: my $uhome=&homeserver($uname,$udomain);
3314:
3315: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
3316: my @pairs=split(/\&/,$rep);
3317: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
3318: return @pairs;
3319: }
3320: my %returnhash=();
3321: my $i=0;
3322: foreach my $item (@$storearr) {
3323: $returnhash{$item}=&thaw_unescape($pairs[$i]);
3324: $i++;
3325: }
3326: return %returnhash;
3327: }
3328:
3329: # --------------------------------------------------------------- del interface
3330:
3331: sub del {
3332: my ($namespace,$storearr,$udomain,$uname)=@_;
3333: my $items='';
3334: foreach my $item (@$storearr) {
3335: $items.=&escape($item).'&';
3336: }
3337: $items=~s/\&$//;
3338: if (!$udomain) { $udomain=$env{'user.domain'}; }
3339: if (!$uname) { $uname=$env{'user.name'}; }
3340: my $uhome=&homeserver($uname,$udomain);
3341:
3342: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
3343: }
3344:
3345: # -------------------------------------------------------------- dump interface
3346:
3347: sub dump {
3348: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
3349: if (!$udomain) { $udomain=$env{'user.domain'}; }
3350: if (!$uname) { $uname=$env{'user.name'}; }
3351: my $uhome=&homeserver($uname,$udomain);
3352: if ($regexp) {
3353: $regexp=&escape($regexp);
3354: } else {
3355: $regexp='.';
3356: }
3357: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
3358: my @pairs=split(/\&/,$rep);
3359: my %returnhash=();
3360: foreach my $item (@pairs) {
3361: my ($key,$value)=split(/=/,$item,2);
3362: $key = &unescape($key);
3363: next if ($key =~ /^error: 2 /);
3364: $returnhash{$key}=&thaw_unescape($value);
3365: }
3366: return %returnhash;
3367: }
3368:
3369: # --------------------------------------------------------- dumpstore interface
3370:
3371: sub dumpstore {
3372: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
3373: if (!$udomain) { $udomain=$env{'user.domain'}; }
3374: if (!$uname) { $uname=$env{'user.name'}; }
3375: my $uhome=&homeserver($uname,$udomain);
3376: if ($regexp) {
3377: $regexp=&escape($regexp);
3378: } else {
3379: $regexp='.';
3380: }
3381: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
3382: my @pairs=split(/\&/,$rep);
3383: my %returnhash=();
3384: foreach my $item (@pairs) {
3385: my ($key,$value)=split(/=/,$item,2);
3386: next if ($key =~ /^error: 2 /);
3387: $returnhash{$key}=&thaw_unescape($value);
3388: }
3389: return %returnhash;
3390: }
3391:
3392: # -------------------------------------------------------------- keys interface
3393:
3394: sub getkeys {
3395: my ($namespace,$udomain,$uname)=@_;
3396: if (!$udomain) { $udomain=$env{'user.domain'}; }
3397: if (!$uname) { $uname=$env{'user.name'}; }
3398: my $uhome=&homeserver($uname,$udomain);
3399: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
3400: my @keyarray=();
3401: foreach my $key (split(/\&/,$rep)) {
3402: next if ($key =~ /^error: 2 /);
3403: push(@keyarray,&unescape($key));
3404: }
3405: return @keyarray;
3406: }
3407:
3408: # --------------------------------------------------------------- currentdump
3409: sub currentdump {
3410: my ($courseid,$sdom,$sname)=@_;
3411: $courseid = $env{'request.course.id'} if (! defined($courseid));
3412: $sdom = $env{'user.domain'} if (! defined($sdom));
3413: $sname = $env{'user.name'} if (! defined($sname));
3414: my $uhome = &homeserver($sname,$sdom);
3415: my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
3416: return if ($rep =~ /^(error:|no_such_host)/);
3417: #
3418: my %returnhash=();
3419: #
3420: if ($rep eq "unknown_cmd") {
3421: # an old lond will not know currentdump
3422: # Do a dump and make it look like a currentdump
3423: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
3424: return if ($tmp[0] =~ /^(error:|no_such_host)/);
3425: my %hash = @tmp;
3426: @tmp=();
3427: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
3428: } else {
3429: my @pairs=split(/\&/,$rep);
3430: foreach my $pair (@pairs) {
3431: my ($key,$value)=split(/=/,$pair,2);
3432: my ($symb,$param) = split(/:/,$key);
3433: $returnhash{&unescape($symb)}->{&unescape($param)} =
3434: &thaw_unescape($value);
3435: }
3436: }
3437: return %returnhash;
3438: }
3439:
3440: sub convert_dump_to_currentdump{
3441: my %hash = %{shift()};
3442: my %returnhash;
3443: # Code ripped from lond, essentially. The only difference
3444: # here is the unescaping done by lonnet::dump(). Conceivably
3445: # we might run in to problems with parameter names =~ /^v\./
3446: while (my ($key,$value) = each(%hash)) {
3447: my ($v,$symb,$param) = split(/:/,$key);
3448: $symb = &unescape($symb);
3449: $param = &unescape($param);
3450: next if ($v eq 'version' || $symb eq 'keys');
3451: next if (exists($returnhash{$symb}) &&
3452: exists($returnhash{$symb}->{$param}) &&
3453: $returnhash{$symb}->{'v.'.$param} > $v);
3454: $returnhash{$symb}->{$param}=$value;
3455: $returnhash{$symb}->{'v.'.$param}=$v;
3456: }
3457: #
3458: # Remove all of the keys in the hashes which keep track of
3459: # the version of the parameter.
3460: while (my ($symb,$param_hash) = each(%returnhash)) {
3461: # use a foreach because we are going to delete from the hash.
3462: foreach my $key (keys(%$param_hash)) {
3463: delete($param_hash->{$key}) if ($key =~ /^v\./);
3464: }
3465: }
3466: return \%returnhash;
3467: }
3468:
3469: # ------------------------------------------------------ critical inc interface
3470:
3471: sub cinc {
3472: return &inc(@_,'critical');
3473: }
3474:
3475: # --------------------------------------------------------------- inc interface
3476:
3477: sub inc {
3478: my ($namespace,$store,$udomain,$uname,$critical) = @_;
3479: if (!$udomain) { $udomain=$env{'user.domain'}; }
3480: if (!$uname) { $uname=$env{'user.name'}; }
3481: my $uhome=&homeserver($uname,$udomain);
3482: my $items='';
3483: if (! ref($store)) {
3484: # got a single value, so use that instead
3485: $items = &escape($store).'=&';
3486: } elsif (ref($store) eq 'SCALAR') {
3487: $items = &escape($$store).'=&';
3488: } elsif (ref($store) eq 'ARRAY') {
3489: $items = join('=&',map {&escape($_);} @{$store});
3490: } elsif (ref($store) eq 'HASH') {
3491: while (my($key,$value) = each(%{$store})) {
3492: $items.= &escape($key).'='.&escape($value).'&';
3493: }
3494: }
3495: $items=~s/\&$//;
3496: if ($critical) {
3497: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
3498: } else {
3499: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
3500: }
3501: }
3502:
3503: # --------------------------------------------------------------- put interface
3504:
3505: sub put {
3506: my ($namespace,$storehash,$udomain,$uname)=@_;
3507: if (!$udomain) { $udomain=$env{'user.domain'}; }
3508: if (!$uname) { $uname=$env{'user.name'}; }
3509: my $uhome=&homeserver($uname,$udomain);
3510: my $items='';
3511: foreach my $item (keys(%$storehash)) {
3512: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
3513: }
3514: $items=~s/\&$//;
3515: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
3516: }
3517:
3518: # ------------------------------------------------------------ newput interface
3519:
3520: sub newput {
3521: my ($namespace,$storehash,$udomain,$uname)=@_;
3522: if (!$udomain) { $udomain=$env{'user.domain'}; }
3523: if (!$uname) { $uname=$env{'user.name'}; }
3524: my $uhome=&homeserver($uname,$udomain);
3525: my $items='';
3526: foreach my $key (keys(%$storehash)) {
3527: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3528: }
3529: $items=~s/\&$//;
3530: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
3531: }
3532:
3533: # --------------------------------------------------------- putstore interface
3534:
3535: sub putstore {
3536: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
3537: if (!$udomain) { $udomain=$env{'user.domain'}; }
3538: if (!$uname) { $uname=$env{'user.name'}; }
3539: my $uhome=&homeserver($uname,$udomain);
3540: my $items='';
3541: foreach my $key (keys(%$storehash)) {
3542: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
3543: }
3544: $items=~s/\&$//;
3545: my $esc_symb=&escape($symb);
3546: my $esc_v=&escape($version);
3547: my $reply =
3548: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
3549: $uhome);
3550: if ($reply eq 'unknown_cmd') {
3551: # gfall back to way things use to be done
3552: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
3553: $uname);
3554: }
3555: return $reply;
3556: }
3557:
3558: sub old_putstore {
3559: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
3560: if (!$udomain) { $udomain=$env{'user.domain'}; }
3561: if (!$uname) { $uname=$env{'user.name'}; }
3562: my $uhome=&homeserver($uname,$udomain);
3563: my %newstorehash;
3564: foreach my $item (keys(%$storehash)) {
3565: my $key = $version.':'.&escape($symb).':'.$item;
3566: $newstorehash{$key} = $storehash->{$item};
3567: }
3568: my $items='';
3569: my %allitems = ();
3570: foreach my $item (keys(%newstorehash)) {
3571: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
3572: my $key = $1.':keys:'.$2;
3573: $allitems{$key} .= $3.':';
3574: }
3575: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
3576: }
3577: foreach my $item (keys(%allitems)) {
3578: $allitems{$item} =~ s/\:$//;
3579: $items.= $item.'='.$allitems{$item}.'&';
3580: }
3581: $items=~s/\&$//;
3582: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
3583: }
3584:
3585: # ------------------------------------------------------ critical put interface
3586:
3587: sub cput {
3588: my ($namespace,$storehash,$udomain,$uname)=@_;
3589: if (!$udomain) { $udomain=$env{'user.domain'}; }
3590: if (!$uname) { $uname=$env{'user.name'}; }
3591: my $uhome=&homeserver($uname,$udomain);
3592: my $items='';
3593: foreach my $item (keys(%$storehash)) {
3594: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
3595: }
3596: $items=~s/\&$//;
3597: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
3598: }
3599:
3600: # -------------------------------------------------------------- eget interface
3601:
3602: sub eget {
3603: my ($namespace,$storearr,$udomain,$uname)=@_;
3604: my $items='';
3605: foreach my $item (@$storearr) {
3606: $items.=&escape($item).'&';
3607: }
3608: $items=~s/\&$//;
3609: if (!$udomain) { $udomain=$env{'user.domain'}; }
3610: if (!$uname) { $uname=$env{'user.name'}; }
3611: my $uhome=&homeserver($uname,$udomain);
3612: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
3613: my @pairs=split(/\&/,$rep);
3614: my %returnhash=();
3615: my $i=0;
3616: foreach my $item (@$storearr) {
3617: $returnhash{$item}=&thaw_unescape($pairs[$i]);
3618: $i++;
3619: }
3620: return %returnhash;
3621: }
3622:
3623: # ------------------------------------------------------------ tmpput interface
3624: sub tmpput {
3625: my ($storehash,$server,$context)=@_;
3626: my $items='';
3627: foreach my $item (keys(%$storehash)) {
3628: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
3629: }
3630: $items=~s/\&$//;
3631: if (defined($context)) {
3632: $items .= ':'.&escape($context);
3633: }
3634: return &reply("tmpput:$items",$server);
3635: }
3636:
3637: # ------------------------------------------------------------ tmpget interface
3638: sub tmpget {
3639: my ($token,$server)=@_;
3640: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
3641: my $rep=&reply("tmpget:$token",$server);
3642: my %returnhash;
3643: foreach my $item (split(/\&/,$rep)) {
3644: my ($key,$value)=split(/=/,$item);
3645: $returnhash{&unescape($key)}=&thaw_unescape($value);
3646: }
3647: return %returnhash;
3648: }
3649:
3650: # ------------------------------------------------------------ tmpget interface
3651: sub tmpdel {
3652: my ($token,$server)=@_;
3653: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
3654: return &reply("tmpdel:$token",$server);
3655: }
3656:
3657: # -------------------------------------------------- portfolio access checking
3658:
3659: sub portfolio_access {
3660: my ($requrl) = @_;
3661: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
3662: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
3663: if ($result) {
3664: my %setters;
3665: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
3666: my ($startblock,$endblock) =
3667: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
3668: if ($startblock && $endblock) {
3669: return 'B';
3670: }
3671: } else {
3672: my ($startblock,$endblock) =
3673: &Apache::loncommon::blockcheck(\%setters,'port');
3674: if ($startblock && $endblock) {
3675: return 'B';
3676: }
3677: }
3678: }
3679: if ($result eq 'ok') {
3680: return 'F';
3681: } elsif ($result =~ /^[^:]+:guest_/) {
3682: return 'A';
3683: }
3684: return '';
3685: }
3686:
3687: sub get_portfolio_access {
3688: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
3689:
3690: if (!ref($access_hash)) {
3691: my $current_perms = &get_portfile_permissions($udom,$unum);
3692: my %access_controls = &get_access_controls($current_perms,$group,
3693: $file_name);
3694: $access_hash = $access_controls{$file_name};
3695: }
3696:
3697: my ($public,$guest,@domains,@users,@courses,@groups);
3698: my $now = time;
3699: if (ref($access_hash) eq 'HASH') {
3700: foreach my $key (keys(%{$access_hash})) {
3701: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
3702: if ($start > $now) {
3703: next;
3704: }
3705: if ($end && $end<$now) {
3706: next;
3707: }
3708: if ($scope eq 'public') {
3709: $public = $key;
3710: last;
3711: } elsif ($scope eq 'guest') {
3712: $guest = $key;
3713: } elsif ($scope eq 'domains') {
3714: push(@domains,$key);
3715: } elsif ($scope eq 'users') {
3716: push(@users,$key);
3717: } elsif ($scope eq 'course') {
3718: push(@courses,$key);
3719: } elsif ($scope eq 'group') {
3720: push(@groups,$key);
3721: }
3722: }
3723: if ($public) {
3724: return 'ok';
3725: }
3726: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
3727: if ($guest) {
3728: return $guest;
3729: }
3730: } else {
3731: if (@domains > 0) {
3732: foreach my $domkey (@domains) {
3733: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
3734: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
3735: return 'ok';
3736: }
3737: }
3738: }
3739: }
3740: if (@users > 0) {
3741: foreach my $userkey (@users) {
3742: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
3743: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
3744: if (ref($item) eq 'HASH') {
3745: if (($item->{'uname'} eq $env{'user.name'}) &&
3746: ($item->{'udom'} eq $env{'user.domain'})) {
3747: return 'ok';
3748: }
3749: }
3750: }
3751: }
3752: }
3753: }
3754: my %roleshash;
3755: my @courses_and_groups = @courses;
3756: push(@courses_and_groups,@groups);
3757: if (@courses_and_groups > 0) {
3758: my (%allgroups,%allroles);
3759: my ($start,$end,$role,$sec,$group);
3760: foreach my $envkey (%env) {
3761: if ($envkey =~ m-^user\.role\.(gr|cc|in|ta|ep|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
3762: my $cid = $2.'_'.$3;
3763: if ($1 eq 'gr') {
3764: $group = $4;
3765: $allgroups{$cid}{$group} = $env{$envkey};
3766: } else {
3767: if ($4 eq '') {
3768: $sec = 'none';
3769: } else {
3770: $sec = $4;
3771: }
3772: $allroles{$cid}{$1}{$sec} = $env{$envkey};
3773: }
3774: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
3775: my $cid = $2.'_'.$3;
3776: if ($4 eq '') {
3777: $sec = 'none';
3778: } else {
3779: $sec = $4;
3780: }
3781: $allroles{$cid}{$1}{$sec} = $env{$envkey};
3782: }
3783: }
3784: if (keys(%allroles) == 0) {
3785: return;
3786: }
3787: foreach my $key (@courses_and_groups) {
3788: my %content = %{$$access_hash{$key}};
3789: my $cnum = $content{'number'};
3790: my $cdom = $content{'domain'};
3791: my $cid = $cdom.'_'.$cnum;
3792: if (!exists($allroles{$cid})) {
3793: next;
3794: }
3795: foreach my $role_id (keys(%{$content{'roles'}})) {
3796: my @sections = @{$content{'roles'}{$role_id}{'section'}};
3797: my @groups = @{$content{'roles'}{$role_id}{'group'}};
3798: my @status = @{$content{'roles'}{$role_id}{'access'}};
3799: my @roles = @{$content{'roles'}{$role_id}{'role'}};
3800: foreach my $role (keys(%{$allroles{$cid}})) {
3801: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
3802: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
3803: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
3804: if (grep/^all$/,@sections) {
3805: return 'ok';
3806: } else {
3807: if (grep/^$sec$/,@sections) {
3808: return 'ok';
3809: }
3810: }
3811: }
3812: }
3813: if (keys(%{$allgroups{$cid}}) == 0) {
3814: if (grep/^none$/,@groups) {
3815: return 'ok';
3816: }
3817: } else {
3818: if (grep/^all$/,@groups) {
3819: return 'ok';
3820: }
3821: foreach my $group (keys(%{$allgroups{$cid}})) {
3822: if (grep/^$group$/,@groups) {
3823: return 'ok';
3824: }
3825: }
3826: }
3827: }
3828: }
3829: }
3830: }
3831: }
3832: if ($guest) {
3833: return $guest;
3834: }
3835: }
3836: }
3837: return;
3838: }
3839:
3840: sub course_group_datechecker {
3841: my ($dates,$now,$status) = @_;
3842: my ($start,$end) = split(/\./,$dates);
3843: if (!$start && !$end) {
3844: return 'ok';
3845: }
3846: if (grep/^active$/,@{$status}) {
3847: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
3848: return 'ok';
3849: }
3850: }
3851: if (grep/^previous$/,@{$status}) {
3852: if ($end > $now ) {
3853: return 'ok';
3854: }
3855: }
3856: if (grep/^future$/,@{$status}) {
3857: if ($start > $now) {
3858: return 'ok';
3859: }
3860: }
3861: return;
3862: }
3863:
3864: sub parse_portfolio_url {
3865: my ($url) = @_;
3866:
3867: my ($type,$udom,$unum,$group,$file_name);
3868:
3869: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
3870: $type = 1;
3871: $udom = $1;
3872: $unum = $2;
3873: $file_name = $3;
3874: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
3875: $type = 2;
3876: $udom = $1;
3877: $unum = $2;
3878: $group = $3;
3879: $file_name = $3.'/'.$4;
3880: }
3881: if (wantarray) {
3882: return ($type,$udom,$unum,$file_name,$group);
3883: }
3884: return $type;
3885: }
3886:
3887: sub is_portfolio_url {
3888: my ($url) = @_;
3889: return scalar(&parse_portfolio_url($url));
3890: }
3891:
3892: sub is_portfolio_file {
3893: my ($file) = @_;
3894: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
3895: return 1;
3896: }
3897: return;
3898: }
3899:
3900:
3901: # ---------------------------------------------- Custom access rule evaluation
3902:
3903: sub customaccess {
3904: my ($priv,$uri)=@_;
3905: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
3906: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
3907: $udom = &LONCAPA::clean_domain($udom);
3908: $ucrs = &LONCAPA::clean_username($ucrs);
3909: my $access=0;
3910: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
3911: my ($effect,$realm,$role,$type)=split(/\:/,$right);
3912: if ($type eq 'user') {
3913: foreach my $scope (split(/\s*\,\s*/,$realm)) {
3914: my ($tdom,$tuname)=split(m{/},$scope);
3915: if ($tdom) {
3916: if ($tdom ne $env{'user.domain'}) { next; }
3917: }
3918: if ($tuname) {
3919: if ($tuname ne $env{'user.name'}) { next; }
3920: }
3921: $access=($effect eq 'allow');
3922: last;
3923: }
3924: } else {
3925: if ($role) {
3926: if ($role ne $urole) { next; }
3927: }
3928: foreach my $scope (split(/\s*\,\s*/,$realm)) {
3929: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
3930: if ($tdom) {
3931: if ($tdom ne $udom) { next; }
3932: }
3933: if ($tcrs) {
3934: if ($tcrs ne $ucrs) { next; }
3935: }
3936: if ($tsec) {
3937: if ($tsec ne $usec) { next; }
3938: }
3939: $access=($effect eq 'allow');
3940: last;
3941: }
3942: if ($realm eq '' && $role eq '') {
3943: $access=($effect eq 'allow');
3944: }
3945: }
3946: }
3947: return $access;
3948: }
3949:
3950: # ------------------------------------------------- Check for a user privilege
3951:
3952: sub allowed {
3953: my ($priv,$uri,$symb,$role)=@_;
3954: my $ver_orguri=$uri;
3955: $uri=&deversion($uri);
3956: my $orguri=$uri;
3957: $uri=&declutter($uri);
3958:
3959: if ($priv eq 'evb') {
3960: # Evade communication block restrictions for specified role in a course
3961: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
3962: return $1;
3963: } else {
3964: return;
3965: }
3966: }
3967:
3968: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
3969: # Free bre access to adm and meta resources
3970: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
3971: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
3972: && ($priv eq 'bre')) {
3973: return 'F';
3974: }
3975:
3976: # Free bre access to user's own portfolio contents
3977: my ($space,$domain,$name,@dir)=split('/',$uri);
3978: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
3979: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
3980: my %setters;
3981: my ($startblock,$endblock) =
3982: &Apache::loncommon::blockcheck(\%setters,'port');
3983: if ($startblock && $endblock) {
3984: return 'B';
3985: } else {
3986: return 'F';
3987: }
3988: }
3989:
3990: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
3991: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
3992: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
3993: if (exists($env{'request.course.id'})) {
3994: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
3995: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
3996: if (($domain eq $cdom) && ($name eq $cnum)) {
3997: my $courseprivid=$env{'request.course.id'};
3998: $courseprivid=~s/\_/\//;
3999: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
4000: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
4001: return $1;
4002: } else {
4003: if ($env{'request.course.sec'}) {
4004: $courseprivid.='/'.$env{'request.course.sec'};
4005: }
4006: if ($env{'user.priv.'.$env{'request.role'}.'./'.
4007: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
4008: return $2;
4009: }
4010: }
4011: }
4012: }
4013: }
4014:
4015: # Free bre to public access
4016:
4017: if ($priv eq 'bre') {
4018: my $copyright=&metadata($uri,'copyright');
4019: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
4020: return 'F';
4021: }
4022: if ($copyright eq 'priv') {
4023: $uri=~/([^\/]+)\/([^\/]+)\//;
4024: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
4025: return '';
4026: }
4027: }
4028: if ($copyright eq 'domain') {
4029: $uri=~/([^\/]+)\/([^\/]+)\//;
4030: unless (($env{'user.domain'} eq $1) ||
4031: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
4032: return '';
4033: }
4034: }
4035: if ($env{'request.role'}=~ /li\.\//) {
4036: # Library role, so allow browsing of resources in this domain.
4037: return 'F';
4038: }
4039: if ($copyright eq 'custom') {
4040: unless (&customaccess($priv,$uri)) { return ''; }
4041: }
4042: }
4043: # Domain coordinator is trying to create a course
4044: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
4045: # uri is the requested domain in this case.
4046: # comparison to 'request.role.domain' shows if the user has selected
4047: # a role of dc for the domain in question.
4048: return 'F' if ($uri eq $env{'request.role.domain'});
4049: }
4050:
4051: my $thisallowed='';
4052: my $statecond=0;
4053: my $courseprivid='';
4054:
4055: # Course
4056:
4057: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
4058: $thisallowed.=$1;
4059: }
4060:
4061: # Domain
4062:
4063: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
4064: =~/\Q$priv\E\&([^\:]*)/) {
4065: $thisallowed.=$1;
4066: }
4067:
4068: # Course: uri itself is a course
4069: my $courseuri=$uri;
4070: $courseuri=~s/\_(\d)/\/$1/;
4071: $courseuri=~s/^([^\/])/\/$1/;
4072:
4073: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
4074: =~/\Q$priv\E\&([^\:]*)/) {
4075: $thisallowed.=$1;
4076: }
4077:
4078: # URI is an uploaded document for this course, default permissions don't matter
4079: # not allowing 'edit' access (editupload) to uploaded course docs
4080: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
4081: $thisallowed='';
4082: my ($match)=&is_on_map($uri);
4083: if ($match) {
4084: if ($env{'user.priv.'.$env{'request.role'}.'./'}
4085: =~/\Q$priv\E\&([^\:]*)/) {
4086: $thisallowed.=$1;
4087: }
4088: } else {
4089: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
4090: if ($refuri) {
4091: if ($refuri =~ m|^/adm/|) {
4092: $thisallowed='F';
4093: } else {
4094: $refuri=&declutter($refuri);
4095: my ($match) = &is_on_map($refuri);
4096: if ($match) {
4097: $thisallowed='F';
4098: }
4099: }
4100: }
4101: }
4102: }
4103:
4104: if ($priv eq 'bre'
4105: && $thisallowed ne 'F'
4106: && $thisallowed ne '2'
4107: && &is_portfolio_url($uri)) {
4108: $thisallowed = &portfolio_access($uri);
4109: }
4110:
4111: # Full access at system, domain or course-wide level? Exit.
4112:
4113: if ($thisallowed=~/F/) {
4114: return 'F';
4115: }
4116:
4117: # If this is generating or modifying users, exit with special codes
4118:
4119: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
4120: if (($priv eq 'cca') || ($priv eq 'caa')) {
4121: my ($audom,$auname)=split('/',$uri);
4122: # no author name given, so this just checks on the general right to make a co-author in this domain
4123: unless ($auname) { return $thisallowed; }
4124: # an author name is given, so we are about to actually make a co-author for a certain account
4125: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
4126: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
4127: ($audom ne $env{'request.role.domain'}))) { return ''; }
4128: }
4129: return $thisallowed;
4130: }
4131: #
4132: # Gathered so far: system, domain and course wide privileges
4133: #
4134: # Course: See if uri or referer is an individual resource that is part of
4135: # the course
4136:
4137: if ($env{'request.course.id'}) {
4138:
4139: $courseprivid=$env{'request.course.id'};
4140: if ($env{'request.course.sec'}) {
4141: $courseprivid.='/'.$env{'request.course.sec'};
4142: }
4143: $courseprivid=~s/\_/\//;
4144: my $checkreferer=1;
4145: my ($match,$cond)=&is_on_map($uri);
4146: if ($match) {
4147: $statecond=$cond;
4148: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
4149: =~/\Q$priv\E\&([^\:]*)/) {
4150: $thisallowed.=$1;
4151: $checkreferer=0;
4152: }
4153: }
4154:
4155: if ($checkreferer) {
4156: my $refuri=$env{'httpref.'.$orguri};
4157: unless ($refuri) {
4158: foreach my $key (keys(%env)) {
4159: if ($key=~/^httpref\..*\*/) {
4160: my $pattern=$key;
4161: $pattern=~s/^httpref\.\/res\///;
4162: $pattern=~s/\*/\[\^\/\]\+/g;
4163: $pattern=~s/\//\\\//g;
4164: if ($orguri=~/$pattern/) {
4165: $refuri=$env{$key};
4166: }
4167: }
4168: }
4169: }
4170:
4171: if ($refuri) {
4172: $refuri=&declutter($refuri);
4173: my ($match,$cond)=&is_on_map($refuri);
4174: if ($match) {
4175: my $refstatecond=$cond;
4176: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
4177: =~/\Q$priv\E\&([^\:]*)/) {
4178: $thisallowed.=$1;
4179: $uri=$refuri;
4180: $statecond=$refstatecond;
4181: }
4182: }
4183: }
4184: }
4185: }
4186:
4187: #
4188: # Gathered now: all privileges that could apply, and condition number
4189: #
4190: #
4191: # Full or no access?
4192: #
4193:
4194: if ($thisallowed=~/F/) {
4195: return 'F';
4196: }
4197:
4198: unless ($thisallowed) {
4199: return '';
4200: }
4201:
4202: # Restrictions exist, deal with them
4203: #
4204: # C:according to course preferences
4205: # R:according to resource settings
4206: # L:unless locked
4207: # X:according to user session state
4208: #
4209:
4210: # Possibly locked functionality, check all courses
4211: # Locks might take effect only after 10 minutes cache expiration for other
4212: # courses, and 2 minutes for current course
4213:
4214: my $envkey;
4215: if ($thisallowed=~/L/) {
4216: foreach $envkey (keys %env) {
4217: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
4218: my $courseid=$2;
4219: my $roleid=$1.'.'.$2;
4220: $courseid=~s/^\///;
4221: my $expiretime=600;
4222: if ($env{'request.role'} eq $roleid) {
4223: $expiretime=120;
4224: }
4225: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
4226: my $prefix='course.'.$cdom.'_'.$cnum.'.';
4227: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
4228: &coursedescription($courseid,{'freshen_cache' => 1});
4229: }
4230: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
4231: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
4232: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
4233: &log($env{'user.domain'},$env{'user.name'},
4234: $env{'user.home'},
4235: 'Locked by res: '.$priv.' for '.$uri.' due to '.
4236: $cdom.'/'.$cnum.'/'.$csec.' expire '.
4237: $env{$prefix.'priv.'.$priv.'.lock.expire'});
4238: return '';
4239: }
4240: }
4241: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
4242: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
4243: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
4244: &log($env{'user.domain'},$env{'user.name'},
4245: $env{'user.home'},
4246: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
4247: $cdom.'/'.$cnum.'/'.$csec.' expire '.
4248: $env{$prefix.'priv.'.$priv.'.lock.expire'});
4249: return '';
4250: }
4251: }
4252: }
4253: }
4254: }
4255:
4256: #
4257: # Rest of the restrictions depend on selected course
4258: #
4259:
4260: unless ($env{'request.course.id'}) {
4261: if ($thisallowed eq 'A') {
4262: return 'A';
4263: } elsif ($thisallowed eq 'B') {
4264: return 'B';
4265: } else {
4266: return '1';
4267: }
4268: }
4269:
4270: #
4271: # Now user is definitely in a course
4272: #
4273:
4274:
4275: # Course preferences
4276:
4277: if ($thisallowed=~/C/) {
4278: my $rolecode=(split(/\./,$env{'request.role'}))[0];
4279: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
4280: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
4281: =~/\Q$rolecode\E/) {
4282: if ($priv ne 'pch') {
4283: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
4284: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
4285: $env{'request.course.id'});
4286: }
4287: return '';
4288: }
4289:
4290: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
4291: =~/\Q$unamedom\E/) {
4292: if ($priv ne 'pch') {
4293: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
4294: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
4295: $env{'request.course.id'});
4296: }
4297: return '';
4298: }
4299: }
4300:
4301: # Resource preferences
4302:
4303: if ($thisallowed=~/R/) {
4304: my $rolecode=(split(/\./,$env{'request.role'}))[0];
4305: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
4306: if ($priv ne 'pch') {
4307: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
4308: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
4309: }
4310: return '';
4311: }
4312: }
4313:
4314: # Restricted by state or randomout?
4315:
4316: if ($thisallowed=~/X/) {
4317: if ($env{'acc.randomout'}) {
4318: if (!$symb) { $symb=&symbread($uri,1); }
4319: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
4320: return '';
4321: }
4322: }
4323: if (&condval($statecond)) {
4324: return '2';
4325: } else {
4326: return '';
4327: }
4328: }
4329:
4330: if ($thisallowed eq 'A') {
4331: return 'A';
4332: } elsif ($thisallowed eq 'B') {
4333: return 'B';
4334: }
4335: return 'F';
4336: }
4337:
4338: sub split_uri_for_cond {
4339: my $uri=&deversion(&declutter(shift));
4340: my @uriparts=split(/\//,$uri);
4341: my $filename=pop(@uriparts);
4342: my $pathname=join('/',@uriparts);
4343: return ($pathname,$filename);
4344: }
4345: # --------------------------------------------------- Is a resource on the map?
4346:
4347: sub is_on_map {
4348: my ($pathname,$filename) = &split_uri_for_cond(shift);
4349: #Trying to find the conditional for the file
4350: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
4351: /\&\Q$filename\E\:([\d\|]+)\&/);
4352: if ($match) {
4353: return (1,$1);
4354: } else {
4355: return (0,0);
4356: }
4357: }
4358:
4359: # --------------------------------------------------------- Get symb from alias
4360:
4361: sub get_symb_from_alias {
4362: my $symb=shift;
4363: my ($map,$resid,$url)=&decode_symb($symb);
4364: # Already is a symb
4365: if ($url) { return $symb; }
4366: # Must be an alias
4367: my $aliassymb='';
4368: my %bighash;
4369: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
4370: &GDBM_READER(),0640)) {
4371: my $rid=$bighash{'mapalias_'.$symb};
4372: if ($rid) {
4373: my ($mapid,$resid)=split(/\./,$rid);
4374: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
4375: $resid,$bighash{'src_'.$rid});
4376: }
4377: untie %bighash;
4378: }
4379: return $aliassymb;
4380: }
4381:
4382: # ----------------------------------------------------------------- Define Role
4383:
4384: sub definerole {
4385: if (allowed('mcr','/')) {
4386: my ($rolename,$sysrole,$domrole,$courole)=@_;
4387: foreach my $role (split(':',$sysrole)) {
4388: my ($crole,$cqual)=split(/\&/,$role);
4389: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
4390: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
4391: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
4392: return "refused:s:$crole&$cqual";
4393: }
4394: }
4395: }
4396: foreach my $role (split(':',$domrole)) {
4397: my ($crole,$cqual)=split(/\&/,$role);
4398: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
4399: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
4400: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
4401: return "refused:d:$crole&$cqual";
4402: }
4403: }
4404: }
4405: foreach my $role (split(':',$courole)) {
4406: my ($crole,$cqual)=split(/\&/,$role);
4407: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
4408: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
4409: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
4410: return "refused:c:$crole&$cqual";
4411: }
4412: }
4413: }
4414: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
4415: "$env{'user.domain'}:$env{'user.name'}:".
4416: "rolesdef_$rolename=".
4417: escape($sysrole.'_'.$domrole.'_'.$courole);
4418: return reply($command,$env{'user.home'});
4419: } else {
4420: return 'refused';
4421: }
4422: }
4423:
4424: # ---------------- Make a metadata query against the network of library servers
4425:
4426: sub metadata_query {
4427: my ($query,$custom,$customshow,$server_array)=@_;
4428: my %rhash;
4429: my %libserv = &all_library();
4430: my @server_list = (defined($server_array) ? @$server_array
4431: : keys(%libserv) );
4432: for my $server (@server_list) {
4433: unless ($custom or $customshow) {
4434: my $reply=&reply("querysend:".&escape($query),$server);
4435: $rhash{$server}=$reply;
4436: }
4437: else {
4438: my $reply=&reply("querysend:".&escape($query).':'.
4439: &escape($custom).':'.&escape($customshow),
4440: $server);
4441: $rhash{$server}=$reply;
4442: }
4443: }
4444: return \%rhash;
4445: }
4446:
4447: # ----------------------------------------- Send log queries and wait for reply
4448:
4449: sub log_query {
4450: my ($uname,$udom,$query,%filters)=@_;
4451: my $uhome=&homeserver($uname,$udom);
4452: if ($uhome eq 'no_host') { return 'error: no_host'; }
4453: my $uhost=&hostname($uhome);
4454: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
4455: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
4456: $uhome);
4457: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
4458: return get_query_reply($queryid);
4459: }
4460:
4461: # -------------------------- Update MySQL table for portfolio file
4462:
4463: sub update_portfolio_table {
4464: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
4465: my $homeserver = &homeserver($uname,$udom);
4466: my $queryid=
4467: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
4468: ':'.&escape($file_name).':'.$action,$homeserver);
4469: my $reply = &get_query_reply($queryid);
4470: return $reply;
4471: }
4472:
4473: # -------------------------- Update MySQL allusers table
4474:
4475: sub update_allusers_table {
4476: my ($uname,$udom,$names) = @_;
4477: my $homeserver = &homeserver($uname,$udom);
4478: my $queryid=
4479: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
4480: 'lastname='.&escape($names->{'lastname'}).'%%'.
4481: 'firstname='.&escape($names->{'firstname'}).'%%'.
4482: 'middlename='.&escape($names->{'middlename'}).'%%'.
4483: 'generation='.&escape($names->{'generation'}).'%%'.
4484: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
4485: 'id='.&escape($names->{'id'}),$homeserver);
4486: my $reply = &get_query_reply($queryid);
4487: return $reply;
4488: }
4489:
4490: # ------- Request retrieval of institutional classlists for course(s)
4491:
4492: sub fetch_enrollment_query {
4493: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
4494: my $homeserver;
4495: my $maxtries = 1;
4496: if ($context eq 'automated') {
4497: $homeserver = $perlvar{'lonHostID'};
4498: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
4499: } else {
4500: $homeserver = &homeserver($cnum,$dom);
4501: }
4502: my $host=&hostname($homeserver);
4503: my $cmd = '';
4504: foreach my $affiliate (keys %{$affiliatesref}) {
4505: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
4506: }
4507: $cmd =~ s/%%$//;
4508: $cmd = &escape($cmd);
4509: my $query = 'fetchenrollment';
4510: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
4511: unless ($queryid=~/^\Q$host\E\_/) {
4512: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
4513: return 'error: '.$queryid;
4514: }
4515: my $reply = &get_query_reply($queryid);
4516: my $tries = 1;
4517: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
4518: $reply = &get_query_reply($queryid);
4519: $tries ++;
4520: }
4521: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
4522: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
4523: } else {
4524: my @responses = split(/:/,$reply);
4525: if ($homeserver eq $perlvar{'lonHostID'}) {
4526: foreach my $line (@responses) {
4527: my ($key,$value) = split(/=/,$line,2);
4528: $$replyref{$key} = $value;
4529: }
4530: } else {
4531: my $pathname = $perlvar{'lonDaemons'}.'/tmp';
4532: foreach my $line (@responses) {
4533: my ($key,$value) = split(/=/,$line);
4534: $$replyref{$key} = $value;
4535: if ($value > 0) {
4536: foreach my $item (@{$$affiliatesref{$key}}) {
4537: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
4538: my $destname = $pathname.'/'.$filename;
4539: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
4540: if ($xml_classlist =~ /^error/) {
4541: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
4542: } else {
4543: if ( open(FILE,">$destname") ) {
4544: print FILE &unescape($xml_classlist);
4545: close(FILE);
4546: } else {
4547: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
4548: }
4549: }
4550: }
4551: }
4552: }
4553: }
4554: return 'ok';
4555: }
4556: return 'error';
4557: }
4558:
4559: sub get_query_reply {
4560: my $queryid=shift;
4561: my $replyfile=$perlvar{'lonDaemons'}.'/tmp/'.$queryid;
4562: my $reply='';
4563: for (1..100) {
4564: sleep 2;
4565: if (-e $replyfile.'.end') {
4566: if (open(my $fh,$replyfile)) {
4567: $reply = join('',<$fh>);
4568: close($fh);
4569: } else { return 'error: reply_file_error'; }
4570: return &unescape($reply);
4571: }
4572: }
4573: return 'timeout:'.$queryid;
4574: }
4575:
4576: sub courselog_query {
4577: #
4578: # possible filters:
4579: # url: url or symb
4580: # username
4581: # domain
4582: # action: view, submit, grade
4583: # start: timestamp
4584: # end: timestamp
4585: #
4586: my (%filters)=@_;
4587: unless ($env{'request.course.id'}) { return 'no_course'; }
4588: if ($filters{'url'}) {
4589: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
4590: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
4591: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
4592: }
4593: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
4594: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4595: return &log_query($cname,$cdom,'courselog',%filters);
4596: }
4597:
4598: sub userlog_query {
4599: #
4600: # possible filters:
4601: # action: log check role
4602: # start: timestamp
4603: # end: timestamp
4604: #
4605: my ($uname,$udom,%filters)=@_;
4606: return &log_query($uname,$udom,'userlog',%filters);
4607: }
4608:
4609: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
4610:
4611: sub auto_run {
4612: my ($cnum,$cdom) = @_;
4613: my $response = 0;
4614: my $settings;
4615: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
4616: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
4617: $settings = $domconfig{'autoenroll'};
4618: if ($settings->{'run'} eq '1') {
4619: $response = 1;
4620: }
4621: } else {
4622: my $homeserver = &homeserver($cnum,$cdom);
4623: $response = &reply('autorun:'.$cdom,$homeserver);
4624: }
4625: return $response;
4626: }
4627:
4628: sub auto_get_sections {
4629: my ($cnum,$cdom,$inst_coursecode) = @_;
4630: my $homeserver = &homeserver($cnum,$cdom);
4631: my @secs = ();
4632: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
4633: unless ($response eq 'refused') {
4634: @secs = split(/:/,$response);
4635: }
4636: return @secs;
4637: }
4638:
4639: sub auto_new_course {
4640: my ($cnum,$cdom,$inst_course_id,$owner) = @_;
4641: my $homeserver = &homeserver($cnum,$cdom);
4642: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.$owner.':'.$cdom,$homeserver));
4643: return $response;
4644: }
4645:
4646: sub auto_validate_courseID {
4647: my ($cnum,$cdom,$inst_course_id) = @_;
4648: my $homeserver = &homeserver($cnum,$cdom);
4649: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
4650: return $response;
4651: }
4652:
4653: sub auto_create_password {
4654: my ($cnum,$cdom,$authparam,$udom) = @_;
4655: my ($homeserver,$response);
4656: my $create_passwd = 0;
4657: my $authchk = '';
4658: if ($udom =~ /^$match_domain$/) {
4659: $homeserver = &domain($udom,'primary');
4660: }
4661: if ($homeserver eq '') {
4662: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
4663: $homeserver = &homeserver($cnum,$cdom);
4664: }
4665: }
4666: if ($homeserver eq '') {
4667: $authchk = 'nodomain';
4668: } else {
4669: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
4670: if ($response eq 'refused') {
4671: $authchk = 'refused';
4672: } else {
4673: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
4674: }
4675: }
4676: return ($authparam,$create_passwd,$authchk);
4677: }
4678:
4679: sub auto_photo_permission {
4680: my ($cnum,$cdom,$students) = @_;
4681: my $homeserver = &homeserver($cnum,$cdom);
4682: my ($outcome,$perm_reqd,$conditions) =
4683: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
4684: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
4685: return (undef,undef);
4686: }
4687: return ($outcome,$perm_reqd,$conditions);
4688: }
4689:
4690: sub auto_checkphotos {
4691: my ($uname,$udom,$pid) = @_;
4692: my $homeserver = &homeserver($uname,$udom);
4693: my ($result,$resulttype);
4694: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
4695: &escape($uname).':'.&escape($pid),
4696: $homeserver));
4697: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
4698: return (undef,undef);
4699: }
4700: if ($outcome) {
4701: ($result,$resulttype) = split(/:/,$outcome);
4702: }
4703: return ($result,$resulttype);
4704: }
4705:
4706: sub auto_photochoice {
4707: my ($cnum,$cdom) = @_;
4708: my $homeserver = &homeserver($cnum,$cdom);
4709: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
4710: &escape($cdom),
4711: $homeserver)));
4712: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
4713: return (undef,undef);
4714: }
4715: return ($update,$comment);
4716: }
4717:
4718: sub auto_photoupdate {
4719: my ($affiliatesref,$dom,$cnum,$photo) = @_;
4720: my $homeserver = &homeserver($cnum,$dom);
4721: my $host=&hostname($homeserver);
4722: my $cmd = '';
4723: my $maxtries = 1;
4724: foreach my $affiliate (keys(%{$affiliatesref})) {
4725: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
4726: }
4727: $cmd =~ s/%%$//;
4728: $cmd = &escape($cmd);
4729: my $query = 'institutionalphotos';
4730: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
4731: unless ($queryid=~/^\Q$host\E\_/) {
4732: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
4733: return 'error: '.$queryid;
4734: }
4735: my $reply = &get_query_reply($queryid);
4736: my $tries = 1;
4737: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
4738: $reply = &get_query_reply($queryid);
4739: $tries ++;
4740: }
4741: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
4742: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
4743: } else {
4744: my @responses = split(/:/,$reply);
4745: my $outcome = shift(@responses);
4746: foreach my $item (@responses) {
4747: my ($key,$value) = split(/=/,$item);
4748: $$photo{$key} = $value;
4749: }
4750: return $outcome;
4751: }
4752: return 'error';
4753: }
4754:
4755: sub auto_instcode_format {
4756: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
4757: $cat_order) = @_;
4758: my $courses = '';
4759: my @homeservers;
4760: if ($caller eq 'global') {
4761: my %servers = &get_servers($codedom,'library');
4762: foreach my $tryserver (keys(%servers)) {
4763: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
4764: push(@homeservers,$tryserver);
4765: }
4766: }
4767: } else {
4768: push(@homeservers,&homeserver($caller,$codedom));
4769: }
4770: foreach my $code (keys(%{$instcodes})) {
4771: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
4772: }
4773: chop($courses);
4774: my $ok_response = 0;
4775: my $response;
4776: while (@homeservers > 0 && $ok_response == 0) {
4777: my $server = shift(@homeservers);
4778: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
4779: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
4780: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
4781: split(/:/,$response);
4782: %{$codes} = (%{$codes},&str2hash($codes_str));
4783: push(@{$codetitles},&str2array($codetitles_str));
4784: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
4785: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
4786: $ok_response = 1;
4787: }
4788: }
4789: if ($ok_response) {
4790: return 'ok';
4791: } else {
4792: return $response;
4793: }
4794: }
4795:
4796: sub auto_instcode_defaults {
4797: my ($domain,$returnhash,$code_order) = @_;
4798: my @homeservers;
4799:
4800: my %servers = &get_servers($domain,'library');
4801: foreach my $tryserver (keys(%servers)) {
4802: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
4803: push(@homeservers,$tryserver);
4804: }
4805: }
4806:
4807: my $response;
4808: foreach my $server (@homeservers) {
4809: $response=&reply('autoinstcodedefaults:'.$domain,$server);
4810: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
4811:
4812: foreach my $pair (split(/\&/,$response)) {
4813: my ($name,$value)=split(/\=/,$pair);
4814: if ($name eq 'code_order') {
4815: @{$code_order} = split(/\&/,&unescape($value));
4816: } else {
4817: $returnhash->{&unescape($name)}=&unescape($value);
4818: }
4819: }
4820: return 'ok';
4821: }
4822:
4823: return $response;
4824: }
4825:
4826: sub auto_validate_class_sec {
4827: my ($cdom,$cnum,$owner,$inst_class) = @_;
4828: my $homeserver = &homeserver($cnum,$cdom);
4829: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
4830: &escape($owner).':'.$cdom,$homeserver);
4831: return $response;
4832: }
4833:
4834: # ------------------------------------------------------- Course Group routines
4835:
4836: sub get_coursegroups {
4837: my ($cdom,$cnum,$group,$namespace) = @_;
4838: return(&dump($namespace,$cdom,$cnum,$group));
4839: }
4840:
4841: sub modify_coursegroup {
4842: my ($cdom,$cnum,$groupsettings) = @_;
4843: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
4844: }
4845:
4846: sub toggle_coursegroup_status {
4847: my ($cdom,$cnum,$group,$action) = @_;
4848: my ($from_namespace,$to_namespace);
4849: if ($action eq 'delete') {
4850: $from_namespace = 'coursegroups';
4851: $to_namespace = 'deleted_groups';
4852: } else {
4853: $from_namespace = 'deleted_groups';
4854: $to_namespace = 'coursegroups';
4855: }
4856: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
4857: if (my $tmp = &error(%curr_group)) {
4858: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
4859: return ('read error',$tmp);
4860: } else {
4861: my %savedsettings = %curr_group;
4862: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
4863: my $deloutcome;
4864: if ($result eq 'ok') {
4865: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
4866: } else {
4867: return ('write error',$result);
4868: }
4869: if ($deloutcome eq 'ok') {
4870: return 'ok';
4871: } else {
4872: return ('delete error',$deloutcome);
4873: }
4874: }
4875: }
4876:
4877: sub modify_group_roles {
4878: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs) = @_;
4879: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
4880: my $role = 'gr/'.&escape($userprivs);
4881: my ($uname,$udom) = split(/:/,$user);
4882: my $result = &assignrole($udom,$uname,$url,$role,$end,$start);
4883: if ($result eq 'ok') {
4884: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
4885: }
4886: return $result;
4887: }
4888:
4889: sub modify_coursegroup_membership {
4890: my ($cdom,$cnum,$membership) = @_;
4891: my $result = &put('groupmembership',$membership,$cdom,$cnum);
4892: return $result;
4893: }
4894:
4895: sub get_active_groups {
4896: my ($udom,$uname,$cdom,$cnum) = @_;
4897: my $now = time;
4898: my %groups = ();
4899: foreach my $key (keys(%env)) {
4900: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
4901: my ($start,$end) = split(/\./,$env{$key});
4902: if (($end!=0) && ($end<$now)) { next; }
4903: if (($start!=0) && ($start>$now)) { next; }
4904: if ($1 eq $cdom && $2 eq $cnum) {
4905: $groups{$3} = $env{$key} ;
4906: }
4907: }
4908: }
4909: return %groups;
4910: }
4911:
4912: sub get_group_membership {
4913: my ($cdom,$cnum,$group) = @_;
4914: return(&dump('groupmembership',$cdom,$cnum,$group));
4915: }
4916:
4917: sub get_users_groups {
4918: my ($udom,$uname,$courseid) = @_;
4919: my @usersgroups;
4920: my $cachetime=1800;
4921:
4922: my $hashid="$udom:$uname:$courseid";
4923: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
4924: if (defined($cached)) {
4925: @usersgroups = split(/:/,$grouplist);
4926: } else {
4927: $grouplist = '';
4928: my $courseurl = &courseid_to_courseurl($courseid);
4929: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
4930: my $access_end = $env{'course.'.$courseid.
4931: '.default_enrollment_end_date'};
4932: my $now = time;
4933: foreach my $key (keys(%roleshash)) {
4934: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
4935: my $group = $1;
4936: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
4937: my $start = $2;
4938: my $end = $1;
4939: if ($start == -1) { next; } # deleted from group
4940: if (($start!=0) && ($start>$now)) { next; }
4941: if (($end!=0) && ($end<$now)) {
4942: if ($access_end && $access_end < $now) {
4943: if ($access_end - $end < 86400) {
4944: push(@usersgroups,$group);
4945: }
4946: }
4947: next;
4948: }
4949: push(@usersgroups,$group);
4950: }
4951: }
4952: }
4953: @usersgroups = &sort_course_groups($courseid,@usersgroups);
4954: $grouplist = join(':',@usersgroups);
4955: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
4956: }
4957: return @usersgroups;
4958: }
4959:
4960: sub devalidate_getgroups_cache {
4961: my ($udom,$uname,$cdom,$cnum)=@_;
4962: my $courseid = $cdom.'_'.$cnum;
4963:
4964: my $hashid="$udom:$uname:$courseid";
4965: &devalidate_cache_new('getgroups',$hashid);
4966: }
4967:
4968: # ------------------------------------------------------------------ Plain Text
4969:
4970: sub plaintext {
4971: my ($short,$type,$cid) = @_;
4972: if ($short =~ /^cr/) {
4973: return (split('/',$short))[-1];
4974: }
4975: if (!defined($cid)) {
4976: $cid = $env{'request.course.id'};
4977: }
4978: if (defined($cid) && defined($env{'course.'.$cid.'.'.$short.'.plaintext'})) {
4979: return &Apache::lonlocal::mt($env{'course.'.$cid.'.'.$short.
4980: '.plaintext'});
4981: }
4982: my %rolenames = (
4983: Course => 'std',
4984: Group => 'alt1',
4985: );
4986: if (defined($type) &&
4987: defined($rolenames{$type}) &&
4988: defined($prp{$short}{$rolenames{$type}})) {
4989: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
4990: } else {
4991: return &Apache::lonlocal::mt($prp{$short}{'std'});
4992: }
4993: }
4994:
4995: # ----------------------------------------------------------------- Assign Role
4996:
4997: sub assignrole {
4998: my ($udom,$uname,$url,$role,$end,$start,$deleteflag)=@_;
4999: my $mrole;
5000: if ($role =~ /^cr\//) {
5001: my $cwosec=$url;
5002: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
5003: unless (&allowed('ccr',$cwosec)) {
5004: &logthis('Refused custom assignrole: '.
5005: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
5006: $env{'user.name'}.' at '.$env{'user.domain'});
5007: return 'refused';
5008: }
5009: $mrole='cr';
5010: } elsif ($role =~ /^gr\//) {
5011: my $cwogrp=$url;
5012: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
5013: unless (&allowed('mdg',$cwogrp)) {
5014: &logthis('Refused group assignrole: '.
5015: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
5016: $env{'user.name'}.' at '.$env{'user.domain'});
5017: return 'refused';
5018: }
5019: $mrole='gr';
5020: } else {
5021: my $cwosec=$url;
5022: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
5023: unless ((&allowed('c'.$role,$cwosec)) || &allowed('c'.$role,$udom)) {
5024: &logthis('Refused assignrole: '.
5025: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
5026: $env{'user.name'}.' at '.$env{'user.domain'});
5027: return 'refused';
5028: }
5029: $mrole=$role;
5030: }
5031: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
5032: "$udom:$uname:$url".'_'."$mrole=$role";
5033: if ($end) { $command.='_'.$end; }
5034: if ($start) {
5035: if ($end) {
5036: $command.='_'.$start;
5037: } else {
5038: $command.='_0_'.$start;
5039: }
5040: }
5041: my $origstart = $start;
5042: my $origend = $end;
5043: # actually delete
5044: if ($deleteflag) {
5045: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
5046: # modify command to delete the role
5047: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
5048: "$udom:$uname:$url".'_'."$mrole";
5049: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
5050: # set start and finish to negative values for userrolelog
5051: $start=-1;
5052: $end=-1;
5053: }
5054: }
5055: # send command
5056: my $answer=&reply($command,&homeserver($uname,$udom));
5057: # log new user role if status is ok
5058: if ($answer eq 'ok') {
5059: &userrolelog($role,$uname,$udom,$url,$start,$end);
5060: # for course roles, perform group memberships changes triggered by role change.
5061: unless ($role =~ /^gr/) {
5062: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
5063: $origstart);
5064: }
5065: }
5066: return $answer;
5067: }
5068:
5069: # -------------------------------------------------- Modify user authentication
5070: # Overrides without validation
5071:
5072: sub modifyuserauth {
5073: my ($udom,$uname,$umode,$upass)=@_;
5074: my $uhome=&homeserver($uname,$udom);
5075: unless (&allowed('mau',$udom)) { return 'refused'; }
5076: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
5077: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
5078: ' in domain '.$env{'request.role.domain'});
5079: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
5080: &escape($upass),$uhome);
5081: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
5082: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
5083: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
5084: &log($udom,,$uname,$uhome,
5085: 'Authentication changed by '.$env{'user.domain'}.', '.
5086: $env{'user.name'}.', '.$umode.
5087: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
5088: unless ($reply eq 'ok') {
5089: &logthis('Authentication mode error: '.$reply);
5090: return 'error: '.$reply;
5091: }
5092: return 'ok';
5093: }
5094:
5095: # --------------------------------------------------------------- Modify a user
5096:
5097: sub modifyuser {
5098: my ($udom, $uname, $uid,
5099: $umode, $upass, $first,
5100: $middle, $last, $gene,
5101: $forceid, $desiredhome, $email)=@_;
5102: $udom= &LONCAPA::clean_domain($udom);
5103: $uname=&LONCAPA::clean_username($uname);
5104: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
5105: $umode.', '.$first.', '.$middle.', '.
5106: $last.', '.$gene.'(forceid: '.$forceid.')'.
5107: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
5108: ' desiredhome not specified').
5109: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
5110: ' in domain '.$env{'request.role.domain'});
5111: my $uhome=&homeserver($uname,$udom,'true');
5112: # ----------------------------------------------------------------- Create User
5113: if (($uhome eq 'no_host') &&
5114: (($umode && $upass) || ($umode eq 'localauth'))) {
5115: my $unhome='';
5116: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
5117: $unhome = $desiredhome;
5118: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
5119: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
5120: } else { # load balancing routine for determining $unhome
5121: my $loadm=10000000;
5122: my %servers = &get_servers($udom,'library');
5123: foreach my $tryserver (keys(%servers)) {
5124: my $answer=reply('load',$tryserver);
5125: if (($answer=~/\d+/) && ($answer<$loadm)) {
5126: $loadm=$answer;
5127: $unhome=$tryserver;
5128: }
5129: }
5130: }
5131: if (($unhome eq '') || ($unhome eq 'no_host')) {
5132: return 'error: unable to find a home server for '.$uname.
5133: ' in domain '.$udom;
5134: }
5135: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
5136: &escape($upass),$unhome);
5137: unless ($reply eq 'ok') {
5138: return 'error: '.$reply;
5139: }
5140: $uhome=&homeserver($uname,$udom,'true');
5141: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
5142: return 'error: unable verify users home machine.';
5143: }
5144: } # End of creation of new user
5145: # ---------------------------------------------------------------------- Add ID
5146: if ($uid) {
5147: $uid=~tr/A-Z/a-z/;
5148: my %uidhash=&idrget($udom,$uname);
5149: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
5150: && (!$forceid)) {
5151: unless ($uid eq $uidhash{$uname}) {
5152: return 'error: user id "'.$uid.'" does not match '.
5153: 'current user id "'.$uidhash{$uname}.'".';
5154: }
5155: } else {
5156: &idput($udom,($uname => $uid));
5157: }
5158: }
5159: # -------------------------------------------------------------- Add names, etc
5160: my @tmp=&get('environment',
5161: ['firstname','middlename','lastname','generation','id',
5162: 'permanentemail'],
5163: $udom,$uname);
5164: my %names;
5165: if ($tmp[0] =~ m/^error:.*/) {
5166: %names=();
5167: } else {
5168: %names = @tmp;
5169: }
5170: #
5171: # Make sure to not trash student environment if instructor does not bother
5172: # to supply name and email information
5173: #
5174: if ($first) { $names{'firstname'} = $first; }
5175: if (defined($middle)) { $names{'middlename'} = $middle; }
5176: if ($last) { $names{'lastname'} = $last; }
5177: if (defined($gene)) { $names{'generation'} = $gene; }
5178: if ($email) {
5179: $email=~s/[^\w\@\.\-\,]//gs;
5180: if ($email=~/\@/) { $names{'notification'} = $email;
5181: $names{'critnotification'} = $email;
5182: $names{'permanentemail'} = $email; }
5183: }
5184: if ($uid) { $names{'id'} = $uid; }
5185: my $reply = &put('environment', \%names, $udom,$uname);
5186: if ($reply ne 'ok') { return 'error: '.$reply; }
5187: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
5188: &devalidate_cache_new('namescache',$uname.':'.$udom);
5189: &logthis('Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
5190: $umode.', '.$first.', '.$middle.', '.
5191: $last.', '.$gene.' by '.
5192: $env{'user.name'}.' at '.$env{'user.domain'});
5193: return 'ok';
5194: }
5195:
5196: # -------------------------------------------------------------- Modify student
5197:
5198: sub modifystudent {
5199: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
5200: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid)=@_;
5201: if (!$cid) {
5202: unless ($cid=$env{'request.course.id'}) {
5203: return 'not_in_class';
5204: }
5205: }
5206: # --------------------------------------------------------------- Make the user
5207: my $reply=&modifyuser
5208: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
5209: $desiredhome,$email);
5210: unless ($reply eq 'ok') { return $reply; }
5211: # This will cause &modify_student_enrollment to get the uid from the
5212: # students environment
5213: $uid = undef if (!$forceid);
5214: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
5215: $gene,$usec,$end,$start,$type,$locktype,$cid);
5216: return $reply;
5217: }
5218:
5219: sub modify_student_enrollment {
5220: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid) = @_;
5221: my ($cdom,$cnum,$chome);
5222: if (!$cid) {
5223: unless ($cid=$env{'request.course.id'}) {
5224: return 'not_in_class';
5225: }
5226: $cdom=$env{'course.'.$cid.'.domain'};
5227: $cnum=$env{'course.'.$cid.'.num'};
5228: } else {
5229: ($cdom,$cnum)=split(/_/,$cid);
5230: }
5231: $chome=$env{'course.'.$cid.'.home'};
5232: if (!$chome) {
5233: $chome=&homeserver($cnum,$cdom);
5234: }
5235: if (!$chome) { return 'unknown_course'; }
5236: # Make sure the user exists
5237: my $uhome=&homeserver($uname,$udom);
5238: if (($uhome eq '') || ($uhome eq 'no_host')) {
5239: return 'error: no such user';
5240: }
5241: # Get student data if we were not given enough information
5242: if (!defined($first) || $first eq '' ||
5243: !defined($last) || $last eq '' ||
5244: !defined($uid) || $uid eq '' ||
5245: !defined($middle) || $middle eq '' ||
5246: !defined($gene) || $gene eq '') {
5247: # They did not supply us with enough data to enroll the student, so
5248: # we need to pick up more information.
5249: my %tmp = &get('environment',
5250: ['firstname','middlename','lastname', 'generation','id']
5251: ,$udom,$uname);
5252:
5253: #foreach my $key (keys(%tmp)) {
5254: # &logthis("key $key = ".$tmp{$key});
5255: #}
5256: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
5257: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
5258: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
5259: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
5260: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
5261: }
5262: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
5263: my $reply=cput('classlist',
5264: {"$uname:$udom" =>
5265: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
5266: $cdom,$cnum);
5267: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
5268: return 'error: '.$reply;
5269: } else {
5270: &devalidate_getsection_cache($udom,$uname,$cid);
5271: }
5272: # Add student role to user
5273: my $uurl='/'.$cid;
5274: $uurl=~s/\_/\//g;
5275: if ($usec) {
5276: $uurl.='/'.$usec;
5277: }
5278: return &assignrole($udom,$uname,$uurl,'st',$end,$start);
5279: }
5280:
5281: sub format_name {
5282: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
5283: my $name;
5284: if ($first ne 'lastname') {
5285: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
5286: } else {
5287: if ($lastname=~/\S/) {
5288: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
5289: $name=~s/\s+,/,/;
5290: } else {
5291: $name.= $firstname.' '.$middlename.' '.$generation;
5292: }
5293: }
5294: $name=~s/^\s+//;
5295: $name=~s/\s+$//;
5296: $name=~s/\s+/ /g;
5297: return $name;
5298: }
5299:
5300: # ------------------------------------------------- Write to course preferences
5301:
5302: sub writecoursepref {
5303: my ($courseid,%prefs)=@_;
5304: $courseid=~s/^\///;
5305: $courseid=~s/\_/\//g;
5306: my ($cdomain,$cnum)=split(/\//,$courseid);
5307: my $chome=homeserver($cnum,$cdomain);
5308: if (($chome eq '') || ($chome eq 'no_host')) {
5309: return 'error: no such course';
5310: }
5311: my $cstring='';
5312: foreach my $pref (keys(%prefs)) {
5313: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
5314: }
5315: $cstring=~s/\&$//;
5316: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
5317: }
5318:
5319: # ---------------------------------------------------------- Make/modify course
5320:
5321: sub createcourse {
5322: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
5323: $course_owner,$crstype)=@_;
5324: $url=&declutter($url);
5325: my $cid='';
5326: unless (&allowed('ccc',$udom)) {
5327: return 'refused';
5328: }
5329: # ------------------------------------------------------------------- Create ID
5330: my $uname=int(1+rand(9)).
5331: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
5332: substr($$.time,0,5).unpack("H8",pack("I32",time)).
5333: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
5334: # ----------------------------------------------- Make sure that does not exist
5335: my $uhome=&homeserver($uname,$udom,'true');
5336: unless (($uhome eq '') || ($uhome eq 'no_host')) {
5337: $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
5338: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
5339: $uhome=&homeserver($uname,$udom,'true');
5340: unless (($uhome eq '') || ($uhome eq 'no_host')) {
5341: return 'error: unable to generate unique course-ID';
5342: }
5343: }
5344: # ------------------------------------------------ Check supplied server name
5345: $course_server = $env{'user.homeserver'} if (! defined($course_server));
5346: if (! &is_library($course_server)) {
5347: return 'error:bad server name '.$course_server;
5348: }
5349: # ------------------------------------------------------------- Make the course
5350: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
5351: $course_server);
5352: unless ($reply eq 'ok') { return 'error: '.$reply; }
5353: $uhome=&homeserver($uname,$udom,'true');
5354: if (($uhome eq '') || ($uhome eq 'no_host')) {
5355: return 'error: no such course';
5356: }
5357: # ----------------------------------------------------------------- Course made
5358: # log existence
5359: &courseidput($udom,&escape($udom.'_'.$uname).'='.&escape($description).
5360: ':'.&escape($inst_code).':'.&escape($course_owner).':'.
5361: &escape($crstype),$uhome);
5362: &flushcourselogs();
5363: # set toplevel url
5364: my $topurl=$url;
5365: unless ($nonstandard) {
5366: # ------------------------------------------ For standard courses, make top url
5367: my $mapurl=&clutter($url);
5368: if ($mapurl eq '/res/') { $mapurl=''; }
5369: $env{'form.initmap'}=(<<ENDINITMAP);
5370: <map>
5371: <resource id="1" type="start"></resource>
5372: <resource id="2" src="$mapurl"></resource>
5373: <resource id="3" type="finish"></resource>
5374: <link index="1" from="1" to="2"></link>
5375: <link index="2" from="2" to="3"></link>
5376: </map>
5377: ENDINITMAP
5378: $topurl=&declutter(
5379: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
5380: );
5381: }
5382: # ----------------------------------------------------------- Write preferences
5383: &writecoursepref($udom.'_'.$uname,
5384: ('description' => $description,
5385: 'url' => $topurl));
5386: return '/'.$udom.'/'.$uname;
5387: }
5388:
5389: sub is_course {
5390: my ($cdom,$cnum) = @_;
5391: my %courses = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,
5392: undef,'.');
5393: if (exists($courses{$cdom.'_'.$cnum})) {
5394: return 1;
5395: }
5396: return 0;
5397: }
5398:
5399: # ---------------------------------------------------------- Assign Custom Role
5400:
5401: sub assigncustomrole {
5402: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag)=@_;
5403: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
5404: $end,$start,$deleteflag);
5405: }
5406:
5407: # ----------------------------------------------------------------- Revoke Role
5408:
5409: sub revokerole {
5410: my ($udom,$uname,$url,$role,$deleteflag)=@_;
5411: my $now=time;
5412: return &assignrole($udom,$uname,$url,$role,$now,$deleteflag);
5413: }
5414:
5415: # ---------------------------------------------------------- Revoke Custom Role
5416:
5417: sub revokecustomrole {
5418: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag)=@_;
5419: my $now=time;
5420: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
5421: $deleteflag);
5422: }
5423:
5424: # ------------------------------------------------------------ Disk usage
5425: sub diskusage {
5426: my ($udom,$uname,$directoryRoot)=@_;
5427: $directoryRoot =~ s/\/$//;
5428: my $listing=&reply('du:'.$directoryRoot,homeserver($uname,$udom));
5429: return $listing;
5430: }
5431:
5432: sub is_locked {
5433: my ($file_name, $domain, $user) = @_;
5434: my @check;
5435: my $is_locked;
5436: push @check, $file_name;
5437: my %locked = &get('file_permissions',\@check,
5438: $env{'user.domain'},$env{'user.name'});
5439: my ($tmp)=keys(%locked);
5440: if ($tmp=~/^error:/) { undef(%locked); }
5441:
5442: if (ref($locked{$file_name}) eq 'ARRAY') {
5443: $is_locked = 'false';
5444: foreach my $entry (@{$locked{$file_name}}) {
5445: if (ref($entry) eq 'ARRAY') {
5446: $is_locked = 'true';
5447: last;
5448: }
5449: }
5450: } else {
5451: $is_locked = 'false';
5452: }
5453: }
5454:
5455: sub declutter_portfile {
5456: my ($file) = @_;
5457: $file =~ s{^(/portfolio/|portfolio/)}{/};
5458: return $file;
5459: }
5460:
5461: # ------------------------------------------------------------- Mark as Read Only
5462:
5463: sub mark_as_readonly {
5464: my ($domain,$user,$files,$what) = @_;
5465: my %current_permissions = &dump('file_permissions',$domain,$user);
5466: my ($tmp)=keys(%current_permissions);
5467: if ($tmp=~/^error:/) { undef(%current_permissions); }
5468: foreach my $file (@{$files}) {
5469: $file = &declutter_portfile($file);
5470: push(@{$current_permissions{$file}},$what);
5471: }
5472: &put('file_permissions',\%current_permissions,$domain,$user);
5473: return;
5474: }
5475:
5476: # ------------------------------------------------------------Save Selected Files
5477:
5478: sub save_selected_files {
5479: my ($user, $path, @files) = @_;
5480: my $filename = $user."savedfiles";
5481: my @other_files = &files_not_in_path($user, $path);
5482: open (OUT, '>'.$tmpdir.$filename);
5483: foreach my $file (@files) {
5484: print (OUT $env{'form.currentpath'}.$file."\n");
5485: }
5486: foreach my $file (@other_files) {
5487: print (OUT $file."\n");
5488: }
5489: close (OUT);
5490: return 'ok';
5491: }
5492:
5493: sub clear_selected_files {
5494: my ($user) = @_;
5495: my $filename = $user."savedfiles";
5496: open (OUT, '>'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
5497: print (OUT undef);
5498: close (OUT);
5499: return ("ok");
5500: }
5501:
5502: sub files_in_path {
5503: my ($user, $path) = @_;
5504: my $filename = $user."savedfiles";
5505: my %return_files;
5506: open (IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
5507: while (my $line_in = <IN>) {
5508: chomp ($line_in);
5509: my @paths_and_file = split (m!/!, $line_in);
5510: my $file_part = pop (@paths_and_file);
5511: my $path_part = join ('/', @paths_and_file);
5512: $path_part.='/';
5513: my $path_and_file = $path_part.$file_part;
5514: if ($path_part eq $path) {
5515: $return_files{$file_part}= 'selected';
5516: }
5517: }
5518: close (IN);
5519: return (\%return_files);
5520: }
5521:
5522: # called in portfolio select mode, to show files selected NOT in current directory
5523: sub files_not_in_path {
5524: my ($user, $path) = @_;
5525: my $filename = $user."savedfiles";
5526: my @return_files;
5527: my $path_part;
5528: open(IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
5529: while (my $line = <IN>) {
5530: #ok, I know it's clunky, but I want it to work
5531: my @paths_and_file = split(m|/|, $line);
5532: my $file_part = pop(@paths_and_file);
5533: chomp($file_part);
5534: my $path_part = join('/', @paths_and_file);
5535: $path_part .= '/';
5536: my $path_and_file = $path_part.$file_part;
5537: if ($path_part ne $path) {
5538: push(@return_files, ($path_and_file));
5539: }
5540: }
5541: close(OUT);
5542: return (@return_files);
5543: }
5544:
5545: #----------------------------------------------Get portfolio file permissions
5546:
5547: sub get_portfile_permissions {
5548: my ($domain,$user) = @_;
5549: my %current_permissions = &dump('file_permissions',$domain,$user);
5550: my ($tmp)=keys(%current_permissions);
5551: if ($tmp=~/^error:/) { undef(%current_permissions); }
5552: return \%current_permissions;
5553: }
5554:
5555: #---------------------------------------------Get portfolio file access controls
5556:
5557: sub get_access_controls {
5558: my ($current_permissions,$group,$file) = @_;
5559: my %access;
5560: my $real_file = $file;
5561: $file =~ s/\.meta$//;
5562: if (defined($file)) {
5563: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
5564: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
5565: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
5566: }
5567: }
5568: } else {
5569: foreach my $key (keys(%{$current_permissions})) {
5570: if ($key =~ /\0accesscontrol$/) {
5571: if (defined($group)) {
5572: if ($key !~ m-^\Q$group\E/-) {
5573: next;
5574: }
5575: }
5576: my ($fullpath) = split(/\0/,$key);
5577: if (ref($$current_permissions{$key}) eq 'HASH') {
5578: foreach my $control (keys(%{$$current_permissions{$key}})) {
5579: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
5580: }
5581: }
5582: }
5583: }
5584: }
5585: return %access;
5586: }
5587:
5588: sub modify_access_controls {
5589: my ($file_name,$changes,$domain,$user)=@_;
5590: my ($outcome,$deloutcome);
5591: my %store_permissions;
5592: my %new_values;
5593: my %new_control;
5594: my %translation;
5595: my @deletions = ();
5596: my $now = time;
5597: if (exists($$changes{'activate'})) {
5598: if (ref($$changes{'activate'}) eq 'HASH') {
5599: my @newitems = sort(keys(%{$$changes{'activate'}}));
5600: my $numnew = scalar(@newitems);
5601: for (my $i=0; $i<$numnew; $i++) {
5602: my $newkey = $newitems[$i];
5603: my $newid = &Apache::loncommon::get_cgi_id();
5604: if ($newkey =~ /^\d+:/) {
5605: $newkey =~ s/^(\d+)/$newid/;
5606: $translation{$1} = $newid;
5607: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
5608: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
5609: $translation{$1} = $newid;
5610: }
5611: $new_values{$file_name."\0".$newkey} =
5612: $$changes{'activate'}{$newitems[$i]};
5613: $new_control{$newkey} = $now;
5614: }
5615: }
5616: }
5617: my %todelete;
5618: my %changed_items;
5619: foreach my $action ('delete','update') {
5620: if (exists($$changes{$action})) {
5621: if (ref($$changes{$action}) eq 'HASH') {
5622: foreach my $key (keys(%{$$changes{$action}})) {
5623: my ($itemnum) = ($key =~ /^([^:]+):/);
5624: if ($action eq 'delete') {
5625: $todelete{$itemnum} = 1;
5626: } else {
5627: $changed_items{$itemnum} = $key;
5628: }
5629: }
5630: }
5631: }
5632: }
5633: # get lock on access controls for file.
5634: my $lockhash = {
5635: $file_name."\0".'locked_access_records' => $env{'user.name'}.
5636: ':'.$env{'user.domain'},
5637: };
5638: my $tries = 0;
5639: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
5640:
5641: while (($gotlock ne 'ok') && $tries <3) {
5642: $tries ++;
5643: sleep 1;
5644: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
5645: }
5646: if ($gotlock eq 'ok') {
5647: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
5648: my ($tmp)=keys(%curr_permissions);
5649: if ($tmp=~/^error:/) { undef(%curr_permissions); }
5650: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
5651: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
5652: if (ref($curr_controls) eq 'HASH') {
5653: foreach my $control_item (keys(%{$curr_controls})) {
5654: my ($itemnum) = ($control_item =~ /^([^:]+):/);
5655: if (defined($todelete{$itemnum})) {
5656: push(@deletions,$file_name."\0".$control_item);
5657: } else {
5658: if (defined($changed_items{$itemnum})) {
5659: $new_control{$changed_items{$itemnum}} = $now;
5660: push(@deletions,$file_name."\0".$control_item);
5661: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
5662: } else {
5663: $new_control{$control_item} = $$curr_controls{$control_item};
5664: }
5665: }
5666: }
5667: }
5668: }
5669: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
5670: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
5671: $outcome = &put('file_permissions',\%new_values,$domain,$user);
5672: # remove lock
5673: my @del_lock = ($file_name."\0".'locked_access_records');
5674: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
5675: my ($file,$group);
5676: if (&is_course($domain,$user)) {
5677: ($group,$file) = split(/\//,$file_name,2);
5678: } else {
5679: $file = $file_name;
5680: }
5681: my $sqlresult =
5682: &update_portfolio_table($user,$domain,$file,'portfolio_access',
5683: $group);
5684: } else {
5685: $outcome = "error: could not obtain lockfile\n";
5686: }
5687: return ($outcome,$deloutcome,\%new_values,\%translation);
5688: }
5689:
5690: sub make_public_indefinitely {
5691: my ($requrl) = @_;
5692: my $now = time;
5693: my $action = 'activate';
5694: my $aclnum = 0;
5695: if (&is_portfolio_url($requrl)) {
5696: my (undef,$udom,$unum,$file_name,$group) =
5697: &parse_portfolio_url($requrl);
5698: my $current_perms = &get_portfile_permissions($udom,$unum);
5699: my %access_controls = &get_access_controls($current_perms,
5700: $group,$file_name);
5701: foreach my $key (keys(%{$access_controls{$file_name}})) {
5702: my ($num,$scope,$end,$start) =
5703: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
5704: if ($scope eq 'public') {
5705: if ($start <= $now && $end == 0) {
5706: $action = 'none';
5707: } else {
5708: $action = 'update';
5709: $aclnum = $num;
5710: }
5711: last;
5712: }
5713: }
5714: if ($action eq 'none') {
5715: return 'ok';
5716: } else {
5717: my %changes;
5718: my $newend = 0;
5719: my $newstart = $now;
5720: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
5721: $changes{$action}{$newkey} = {
5722: type => 'public',
5723: time => {
5724: start => $newstart,
5725: end => $newend,
5726: },
5727: };
5728: my ($outcome,$deloutcome,$new_values,$translation) =
5729: &modify_access_controls($file_name,\%changes,$udom,$unum);
5730: return $outcome;
5731: }
5732: } else {
5733: return 'invalid';
5734: }
5735: }
5736:
5737: #------------------------------------------------------Get Marked as Read Only
5738:
5739: sub get_marked_as_readonly {
5740: my ($domain,$user,$what,$group) = @_;
5741: my $current_permissions = &get_portfile_permissions($domain,$user);
5742: my @readonly_files;
5743: my $cmp1=$what;
5744: if (ref($what)) { $cmp1=join('',@{$what}) };
5745: while (my ($file_name,$value) = each(%{$current_permissions})) {
5746: if (defined($group)) {
5747: if ($file_name !~ m-^\Q$group\E/-) {
5748: next;
5749: }
5750: }
5751: if (ref($value) eq "ARRAY"){
5752: foreach my $stored_what (@{$value}) {
5753: my $cmp2=$stored_what;
5754: if (ref($stored_what) eq 'ARRAY') {
5755: $cmp2=join('',@{$stored_what});
5756: }
5757: if ($cmp1 eq $cmp2) {
5758: push(@readonly_files, $file_name);
5759: last;
5760: } elsif (!defined($what)) {
5761: push(@readonly_files, $file_name);
5762: last;
5763: }
5764: }
5765: }
5766: }
5767: return @readonly_files;
5768: }
5769: #-----------------------------------------------------------Get Marked as Read Only Hash
5770:
5771: sub get_marked_as_readonly_hash {
5772: my ($current_permissions,$group,$what) = @_;
5773: my %readonly_files;
5774: while (my ($file_name,$value) = each(%{$current_permissions})) {
5775: if (defined($group)) {
5776: if ($file_name !~ m-^\Q$group\E/-) {
5777: next;
5778: }
5779: }
5780: if (ref($value) eq "ARRAY"){
5781: foreach my $stored_what (@{$value}) {
5782: if (ref($stored_what) eq 'ARRAY') {
5783: foreach my $lock_descriptor(@{$stored_what}) {
5784: if ($lock_descriptor eq 'graded') {
5785: $readonly_files{$file_name} = 'graded';
5786: } elsif ($lock_descriptor eq 'handback') {
5787: $readonly_files{$file_name} = 'handback';
5788: } else {
5789: if (!exists($readonly_files{$file_name})) {
5790: $readonly_files{$file_name} = 'locked';
5791: }
5792: }
5793: }
5794: }
5795: }
5796: }
5797: }
5798: return %readonly_files;
5799: }
5800: # ------------------------------------------------------------ Unmark as Read Only
5801:
5802: sub unmark_as_readonly {
5803: # unmarks $file_name (if $file_name is defined), or all files locked by $what
5804: # for portfolio submissions, $what contains [$symb,$crsid]
5805: my ($domain,$user,$what,$file_name,$group) = @_;
5806: $file_name = &declutter_portfile($file_name);
5807: my $symb_crs = $what;
5808: if (ref($what)) { $symb_crs=join('',@$what); }
5809: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
5810: my ($tmp)=keys(%current_permissions);
5811: if ($tmp=~/^error:/) { undef(%current_permissions); }
5812: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
5813: foreach my $file (@readonly_files) {
5814: my $clean_file = &declutter_portfile($file);
5815: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
5816: my $current_locks = $current_permissions{$file};
5817: my @new_locks;
5818: my @del_keys;
5819: if (ref($current_locks) eq "ARRAY"){
5820: foreach my $locker (@{$current_locks}) {
5821: my $compare=$locker;
5822: if (ref($locker) eq 'ARRAY') {
5823: $compare=join('',@{$locker});
5824: if ($compare ne $symb_crs) {
5825: push(@new_locks, $locker);
5826: }
5827: }
5828: }
5829: if (scalar(@new_locks) > 0) {
5830: $current_permissions{$file} = \@new_locks;
5831: } else {
5832: push(@del_keys, $file);
5833: &del('file_permissions',\@del_keys, $domain, $user);
5834: delete($current_permissions{$file});
5835: }
5836: }
5837: }
5838: &put('file_permissions',\%current_permissions,$domain,$user);
5839: return;
5840: }
5841:
5842: # ------------------------------------------------------------ Directory lister
5843:
5844: sub dirlist {
5845: my ($uri,$userdomain,$username,$alternateDirectoryRoot)=@_;
5846:
5847: $uri=~s/^\///;
5848: $uri=~s/\/$//;
5849: my ($udom, $uname);
5850: (undef,$udom,$uname)=split(/\//,$uri);
5851: if(defined($userdomain)) {
5852: $udom = $userdomain;
5853: }
5854: if(defined($username)) {
5855: $uname = $username;
5856: }
5857:
5858: my $dirRoot = $perlvar{'lonDocRoot'};
5859: if(defined($alternateDirectoryRoot)) {
5860: $dirRoot = $alternateDirectoryRoot;
5861: $dirRoot =~ s/\/$//;
5862: }
5863:
5864: if($udom) {
5865: if($uname) {
5866: my $listing = &reply('ls2:'.$dirRoot.'/'.$uri,
5867: &homeserver($uname,$udom));
5868: my @listing_results;
5869: if ($listing eq 'unknown_cmd') {
5870: $listing = &reply('ls:'.$dirRoot.'/'.$uri,
5871: &homeserver($uname,$udom));
5872: @listing_results = split(/:/,$listing);
5873: } else {
5874: @listing_results = map { &unescape($_); } split(/:/,$listing);
5875: }
5876: return @listing_results;
5877: } elsif(!defined($alternateDirectoryRoot)) {
5878: my %allusers;
5879: my %servers = &get_servers($udom,'library');
5880: foreach my $tryserver (keys(%servers)) {
5881: my $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
5882: $udom, $tryserver);
5883: my @listing_results;
5884: if ($listing eq 'unknown_cmd') {
5885: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
5886: $udom, $tryserver);
5887: @listing_results = split(/:/,$listing);
5888: } else {
5889: @listing_results =
5890: map { &unescape($_); } split(/:/,$listing);
5891: }
5892: if ($listing_results[0] ne 'no_such_dir' &&
5893: $listing_results[0] ne 'empty' &&
5894: $listing_results[0] ne 'con_lost') {
5895: foreach my $line (@listing_results) {
5896: my ($entry) = split(/&/,$line,2);
5897: $allusers{$entry} = 1;
5898: }
5899: }
5900: }
5901: my $alluserstr='';
5902: foreach my $user (sort(keys(%allusers))) {
5903: $alluserstr.=$user.'&user:';
5904: }
5905: $alluserstr=~s/:$//;
5906: return split(/:/,$alluserstr);
5907: } else {
5908: return ('missing user name');
5909: }
5910: } elsif(!defined($alternateDirectoryRoot)) {
5911: my @all_domains = sort(&all_domains());
5912: foreach my $domain (@all_domains) {
5913: $domain = $perlvar{'lonDocRoot'}.'/res/'.$domain.'/&domain';
5914: }
5915: return @all_domains;
5916: } else {
5917: return ('missing domain');
5918: }
5919: }
5920:
5921: # --------------------------------------------- GetFileTimestamp
5922: # This function utilizes dirlist and returns the date stamp for
5923: # when it was last modified. It will also return an error of -1
5924: # if an error occurs
5925:
5926: ##
5927: ## FIXME: This subroutine assumes its caller knows something about the
5928: ## directory structure of the home server for the student ($root).
5929: ## Not a good assumption to make. Since this is for looking up files
5930: ## in user directories, the full path should be constructed by lond, not
5931: ## whatever machine we request data from.
5932: ##
5933: sub GetFileTimestamp {
5934: my ($studentDomain,$studentName,$filename,$root)=@_;
5935: $studentDomain = &LONCAPA::clean_domain($studentDomain);
5936: $studentName = &LONCAPA::clean_username($studentName);
5937: my $subdir=$studentName.'__';
5938: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
5939: my $proname="$studentDomain/$subdir/$studentName";
5940: $proname .= '/'.$filename;
5941: my ($fileStat) = &Apache::lonnet::dirlist($proname, $studentDomain,
5942: $studentName, $root);
5943: my @stats = split('&', $fileStat);
5944: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
5945: # @stats contains first the filename, then the stat output
5946: return $stats[10]; # so this is 10 instead of 9.
5947: } else {
5948: return -1;
5949: }
5950: }
5951:
5952: sub stat_file {
5953: my ($uri) = @_;
5954: $uri = &clutter_with_no_wrapper($uri);
5955:
5956: my ($udom,$uname,$file,$dir);
5957: if ($uri =~ m-^/(uploaded|editupload)/-) {
5958: ($udom,$uname,$file) =
5959: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
5960: $file = 'userfiles/'.$file;
5961: $dir = &propath($udom,$uname);
5962: }
5963: if ($uri =~ m-^/res/-) {
5964: ($udom,$uname) =
5965: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
5966: $file = $uri;
5967: }
5968:
5969: if (!$udom || !$uname || !$file) {
5970: # unable to handle the uri
5971: return ();
5972: }
5973:
5974: my ($result) = &dirlist($file,$udom,$uname,$dir);
5975: my @stats = split('&', $result);
5976:
5977: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
5978: shift(@stats); #filename is first
5979: return @stats;
5980: }
5981: return ();
5982: }
5983:
5984: # -------------------------------------------------------- Value of a Condition
5985:
5986: # gets the value of a specific preevaluated condition
5987: # stored in the string $env{user.state.<cid>}
5988: # or looks up a condition reference in the bighash and if if hasn't
5989: # already been evaluated recurses into docondval to get the value of
5990: # the condition, then memoizing it to
5991: # $env{user.state.<cid>.<condition>}
5992: sub directcondval {
5993: my $number=shift;
5994: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
5995: &Apache::lonuserstate::evalstate();
5996: }
5997: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
5998: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
5999: } elsif ($number =~ /^_/) {
6000: my $sub_condition;
6001: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
6002: &GDBM_READER(),0640)) {
6003: $sub_condition=$bighash{'conditions'.$number};
6004: untie(%bighash);
6005: }
6006: my $value = &docondval($sub_condition);
6007: &appenv('user.state.'.$env{'request.course.id'}.".$number" => $value);
6008: return $value;
6009: }
6010: if ($env{'user.state.'.$env{'request.course.id'}}) {
6011: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
6012: } else {
6013: return 2;
6014: }
6015: }
6016:
6017: # get the collection of conditions for this resource
6018: sub condval {
6019: my $condidx=shift;
6020: my $allpathcond='';
6021: foreach my $cond (split(/\|/,$condidx)) {
6022: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
6023: $allpathcond.=
6024: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
6025: }
6026: }
6027: $allpathcond=~s/\|$//;
6028: return &docondval($allpathcond);
6029: }
6030:
6031: #evaluates an expression of conditions
6032: sub docondval {
6033: my ($allpathcond) = @_;
6034: my $result=0;
6035: if ($env{'request.course.id'}
6036: && defined($allpathcond)) {
6037: my $operand='|';
6038: my @stack;
6039: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
6040: if ($chunk eq '(') {
6041: push @stack,($operand,$result);
6042: } elsif ($chunk eq ')') {
6043: my $before=pop @stack;
6044: if (pop @stack eq '&') {
6045: $result=$result>$before?$before:$result;
6046: } else {
6047: $result=$result>$before?$result:$before;
6048: }
6049: } elsif (($chunk eq '&') || ($chunk eq '|')) {
6050: $operand=$chunk;
6051: } else {
6052: my $new=directcondval($chunk);
6053: if ($operand eq '&') {
6054: $result=$result>$new?$new:$result;
6055: } else {
6056: $result=$result>$new?$result:$new;
6057: }
6058: }
6059: }
6060: }
6061: return $result;
6062: }
6063:
6064: # ---------------------------------------------------- Devalidate courseresdata
6065:
6066: sub devalidatecourseresdata {
6067: my ($coursenum,$coursedomain)=@_;
6068: my $hashid=$coursenum.':'.$coursedomain;
6069: &devalidate_cache_new('courseres',$hashid);
6070: }
6071:
6072:
6073: # --------------------------------------------------- Course Resourcedata Query
6074: #
6075: # Parameters:
6076: # $coursenum - Number of the course.
6077: # $coursedomain - Domain at which the course was created.
6078: # Returns:
6079: # A hash of the course parameters along (I think) with timestamps
6080: # and version info.
6081:
6082: sub get_courseresdata {
6083: my ($coursenum,$coursedomain)=@_;
6084: my $coursehom=&homeserver($coursenum,$coursedomain);
6085: my $hashid=$coursenum.':'.$coursedomain;
6086: my ($result,$cached)=&is_cached_new('courseres',$hashid);
6087: my %dumpreply;
6088: unless (defined($cached)) {
6089: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
6090: $result=\%dumpreply;
6091: my ($tmp) = keys(%dumpreply);
6092: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
6093: &do_cache_new('courseres',$hashid,$result,600);
6094: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
6095: return $tmp;
6096: } elsif ($tmp =~ /^(error)/) {
6097: $result=undef;
6098: &do_cache_new('courseres',$hashid,$result,600);
6099: }
6100: }
6101: return $result;
6102: }
6103:
6104: sub devalidateuserresdata {
6105: my ($uname,$udom)=@_;
6106: my $hashid="$udom:$uname";
6107: &devalidate_cache_new('userres',$hashid);
6108: }
6109:
6110: sub get_userresdata {
6111: my ($uname,$udom)=@_;
6112: #most student don\'t have any data set, check if there is some data
6113: if (&EXT_cache_status($udom,$uname)) { return undef; }
6114:
6115: my $hashid="$udom:$uname";
6116: my ($result,$cached)=&is_cached_new('userres',$hashid);
6117: if (!defined($cached)) {
6118: my %resourcedata=&dump('resourcedata',$udom,$uname);
6119: $result=\%resourcedata;
6120: &do_cache_new('userres',$hashid,$result,600);
6121: }
6122: my ($tmp)=keys(%$result);
6123: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
6124: return $result;
6125: }
6126: #error 2 occurs when the .db doesn't exist
6127: if ($tmp!~/error: 2 /) {
6128: &logthis("<font color=\"blue\">WARNING:".
6129: " Trying to get resource data for ".
6130: $uname." at ".$udom.": ".
6131: $tmp."</font>");
6132: } elsif ($tmp=~/error: 2 /) {
6133: #&EXT_cache_set($udom,$uname);
6134: &do_cache_new('userres',$hashid,undef,600);
6135: undef($tmp); # not really an error so don't send it back
6136: }
6137: return $tmp;
6138: }
6139: #----------------------------------------------- resdata - return resource data
6140: # Purpose:
6141: # Return resource data for either users or for a course.
6142: # Parameters:
6143: # $name - Course/user name.
6144: # $domain - Name of the domain the user/course is registered on.
6145: # $type - Type of thing $name is (must be 'course' or 'user'
6146: # @which - Array of names of resources desired.
6147: # Returns:
6148: # The value of the first reasource in @which that is found in the
6149: # resource hash.
6150: # Exceptional Conditions:
6151: # If the $type passed in is not valid (not the string 'course' or
6152: # 'user', an undefined reference is returned.
6153: # If none of the resources are found, an undef is returned
6154: sub resdata {
6155: my ($name,$domain,$type,@which)=@_;
6156: my $result;
6157: if ($type eq 'course') {
6158: $result=&get_courseresdata($name,$domain);
6159: } elsif ($type eq 'user') {
6160: $result=&get_userresdata($name,$domain);
6161: }
6162: if (!ref($result)) { return $result; }
6163: foreach my $item (@which) {
6164: if (defined($result->{$item})) {
6165: return $result->{$item};
6166: }
6167: }
6168: return undef;
6169: }
6170:
6171: #
6172: # EXT resource caching routines
6173: #
6174:
6175: sub clear_EXT_cache_status {
6176: &delenv('cache.EXT.');
6177: }
6178:
6179: sub EXT_cache_status {
6180: my ($target_domain,$target_user) = @_;
6181: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
6182: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
6183: # We know already the user has no data
6184: return 1;
6185: } else {
6186: return 0;
6187: }
6188: }
6189:
6190: sub EXT_cache_set {
6191: my ($target_domain,$target_user) = @_;
6192: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
6193: #&appenv($cachename => time);
6194: }
6195:
6196: # --------------------------------------------------------- Value of a Variable
6197: sub EXT {
6198:
6199: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
6200: unless ($varname) { return ''; }
6201: #get real user name/domain, courseid and symb
6202: my $courseid;
6203: my $publicuser;
6204: if ($symbparm) {
6205: $symbparm=&get_symb_from_alias($symbparm);
6206: }
6207: if (!($uname && $udom)) {
6208: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
6209: if (!$symbparm) { $symbparm=$cursymb; }
6210: } else {
6211: $courseid=$env{'request.course.id'};
6212: }
6213: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
6214: my $rest;
6215: if (defined($therest[0])) {
6216: $rest=join('.',@therest);
6217: } else {
6218: $rest='';
6219: }
6220:
6221: my $qualifierrest=$qualifier;
6222: if ($rest) { $qualifierrest.='.'.$rest; }
6223: my $spacequalifierrest=$space;
6224: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
6225: if ($realm eq 'user') {
6226: # --------------------------------------------------------------- user.resource
6227: if ($space eq 'resource') {
6228: if ( (defined($Apache::lonhomework::parsing_a_problem)
6229: || defined($Apache::lonhomework::parsing_a_task))
6230: &&
6231: ($symbparm eq &symbread()) ) {
6232: # if we are in the middle of processing the resource the
6233: # get the value we are planning on committing
6234: if (defined($Apache::lonhomework::results{$qualifierrest})) {
6235: return $Apache::lonhomework::results{$qualifierrest};
6236: } else {
6237: return $Apache::lonhomework::history{$qualifierrest};
6238: }
6239: } else {
6240: my %restored;
6241: if ($publicuser || $env{'request.state'} eq 'construct') {
6242: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
6243: } else {
6244: %restored=&restore($symbparm,$courseid,$udom,$uname);
6245: }
6246: return $restored{$qualifierrest};
6247: }
6248: # ----------------------------------------------------------------- user.access
6249: } elsif ($space eq 'access') {
6250: # FIXME - not supporting calls for a specific user
6251: return &allowed($qualifier,$rest);
6252: # ------------------------------------------ user.preferences, user.environment
6253: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
6254: if (($uname eq $env{'user.name'}) &&
6255: ($udom eq $env{'user.domain'})) {
6256: return $env{join('.',('environment',$qualifierrest))};
6257: } else {
6258: my %returnhash;
6259: if (!$publicuser) {
6260: %returnhash=&userenvironment($udom,$uname,
6261: $qualifierrest);
6262: }
6263: return $returnhash{$qualifierrest};
6264: }
6265: # ----------------------------------------------------------------- user.course
6266: } elsif ($space eq 'course') {
6267: # FIXME - not supporting calls for a specific user
6268: return $env{join('.',('request.course',$qualifier))};
6269: # ------------------------------------------------------------------- user.role
6270: } elsif ($space eq 'role') {
6271: # FIXME - not supporting calls for a specific user
6272: my ($role,$where)=split(/\./,$env{'request.role'});
6273: if ($qualifier eq 'value') {
6274: return $role;
6275: } elsif ($qualifier eq 'extent') {
6276: return $where;
6277: }
6278: # ----------------------------------------------------------------- user.domain
6279: } elsif ($space eq 'domain') {
6280: return $udom;
6281: # ------------------------------------------------------------------- user.name
6282: } elsif ($space eq 'name') {
6283: return $uname;
6284: # ---------------------------------------------------- Any other user namespace
6285: } else {
6286: my %reply;
6287: if (!$publicuser) {
6288: %reply=&get($space,[$qualifierrest],$udom,$uname);
6289: }
6290: return $reply{$qualifierrest};
6291: }
6292: } elsif ($realm eq 'query') {
6293: # ---------------------------------------------- pull stuff out of query string
6294: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
6295: [$spacequalifierrest]);
6296: return $env{'form.'.$spacequalifierrest};
6297: } elsif ($realm eq 'request') {
6298: # ------------------------------------------------------------- request.browser
6299: if ($space eq 'browser') {
6300: if ($qualifier eq 'textremote') {
6301: if (&Apache::lonlocal::mt('textual_remote_display') eq 'on') {
6302: return 1;
6303: } else {
6304: return 0;
6305: }
6306: } else {
6307: return $env{'browser.'.$qualifier};
6308: }
6309: # ------------------------------------------------------------ request.filename
6310: } else {
6311: return $env{'request.'.$spacequalifierrest};
6312: }
6313: } elsif ($realm eq 'course') {
6314: # ---------------------------------------------------------- course.description
6315: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
6316: } elsif ($realm eq 'resource') {
6317:
6318: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
6319: if (!$symbparm) { $symbparm=&symbread(); }
6320: }
6321:
6322: if ($space eq 'title') {
6323: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
6324: return &gettitle($symbparm);
6325: }
6326:
6327: if ($space eq 'map') {
6328: my ($map) = &decode_symb($symbparm);
6329: return &symbread($map);
6330: }
6331: if ($space eq 'filename') {
6332: if ($symbparm) {
6333: return &clutter((&decode_symb($symbparm))[2]);
6334: }
6335: return &hreflocation('',$env{'request.filename'});
6336: }
6337:
6338: my ($section, $group, @groups);
6339: my ($courselevelm,$courselevel);
6340: if ($symbparm && defined($courseid) &&
6341: $courseid eq $env{'request.course.id'}) {
6342:
6343: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
6344:
6345: # ----------------------------------------------------- Cascading lookup scheme
6346: my $symbp=$symbparm;
6347: my $mapp=&deversion((&decode_symb($symbp))[0]);
6348:
6349: my $symbparm=$symbp.'.'.$spacequalifierrest;
6350: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
6351:
6352: if (($env{'user.name'} eq $uname) &&
6353: ($env{'user.domain'} eq $udom)) {
6354: $section=$env{'request.course.sec'};
6355: @groups = split(/:/,$env{'request.course.groups'});
6356: @groups=&sort_course_groups($courseid,@groups);
6357: } else {
6358: if (! defined($usection)) {
6359: $section=&getsection($udom,$uname,$courseid);
6360: } else {
6361: $section = $usection;
6362: }
6363: @groups = &get_users_groups($udom,$uname,$courseid);
6364: }
6365:
6366: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
6367: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
6368: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
6369:
6370: $courselevel=$courseid.'.'.$spacequalifierrest;
6371: my $courselevelr=$courseid.'.'.$symbparm;
6372: $courselevelm=$courseid.'.'.$mapparm;
6373:
6374: # ----------------------------------------------------------- first, check user
6375:
6376: my $userreply=&resdata($uname,$udom,'user',
6377: ($courselevelr,$courselevelm,
6378: $courselevel));
6379: if (defined($userreply)) { return $userreply; }
6380:
6381: # ------------------------------------------------ second, check some of course
6382: my $coursereply;
6383: if (@groups > 0) {
6384: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
6385: $mapparm,$spacequalifierrest);
6386: if (defined($coursereply)) { return $coursereply; }
6387: }
6388:
6389: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
6390: $env{'course.'.$courseid.'.domain'},
6391: 'course',
6392: ($seclevelr,$seclevelm,$seclevel,
6393: $courselevelr));
6394: if (defined($coursereply)) { return $coursereply; }
6395:
6396: # ------------------------------------------------------ third, check map parms
6397: my %parmhash=();
6398: my $thisparm='';
6399: if (tie(%parmhash,'GDBM_File',
6400: $env{'request.course.fn'}.'_parms.db',
6401: &GDBM_READER(),0640)) {
6402: $thisparm=$parmhash{$symbparm};
6403: untie(%parmhash);
6404: }
6405: if ($thisparm) { return $thisparm; }
6406: }
6407: # ------------------------------------------ fourth, look in resource metadata
6408:
6409: $spacequalifierrest=~s/\./\_/;
6410: my $filename;
6411: if (!$symbparm) { $symbparm=&symbread(); }
6412: if ($symbparm) {
6413: $filename=(&decode_symb($symbparm))[2];
6414: } else {
6415: $filename=$env{'request.filename'};
6416: }
6417: my $metadata=&metadata($filename,$spacequalifierrest);
6418: if (defined($metadata)) { return $metadata; }
6419: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
6420: if (defined($metadata)) { return $metadata; }
6421:
6422: # ---------------------------------------------- fourth, look in rest pf course
6423: if ($symbparm && defined($courseid) &&
6424: $courseid eq $env{'request.course.id'}) {
6425: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
6426: $env{'course.'.$courseid.'.domain'},
6427: 'course',
6428: ($courselevelm,$courselevel));
6429: if (defined($coursereply)) { return $coursereply; }
6430: }
6431: # ------------------------------------------------------------------ Cascade up
6432: unless ($space eq '0') {
6433: my @parts=split(/_/,$space);
6434: my $id=pop(@parts);
6435: my $part=join('_',@parts);
6436: if ($part eq '') { $part='0'; }
6437: my $partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
6438: $symbparm,$udom,$uname,$section,1);
6439: if (defined($partgeneral)) { return $partgeneral; }
6440: }
6441: if ($recurse) { return undef; }
6442: my $pack_def=&packages_tab_default($filename,$varname);
6443: if (defined($pack_def)) { return $pack_def; }
6444:
6445: # ---------------------------------------------------- Any other user namespace
6446: } elsif ($realm eq 'environment') {
6447: # ----------------------------------------------------------------- environment
6448: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
6449: return $env{'environment.'.$spacequalifierrest};
6450: } else {
6451: if ($uname eq 'anonymous' && $udom eq '') {
6452: return '';
6453: }
6454: my %returnhash=&userenvironment($udom,$uname,
6455: $spacequalifierrest);
6456: return $returnhash{$spacequalifierrest};
6457: }
6458: } elsif ($realm eq 'system') {
6459: # ----------------------------------------------------------------- system.time
6460: if ($space eq 'time') {
6461: return time;
6462: }
6463: } elsif ($realm eq 'server') {
6464: # ----------------------------------------------------------------- system.time
6465: if ($space eq 'name') {
6466: return $ENV{'SERVER_NAME'};
6467: }
6468: }
6469: return '';
6470: }
6471:
6472: sub check_group_parms {
6473: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
6474: my @groupitems = ();
6475: my $resultitem;
6476: my @levels = ($symbparm,$mapparm,$what);
6477: foreach my $group (@{$groups}) {
6478: foreach my $level (@levels) {
6479: my $item = $courseid.'.['.$group.'].'.$level;
6480: push(@groupitems,$item);
6481: }
6482: }
6483: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
6484: $env{'course.'.$courseid.'.domain'},
6485: 'course',@groupitems);
6486: return $coursereply;
6487: }
6488:
6489: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
6490: my ($courseid,@groups) = @_;
6491: @groups = sort(@groups);
6492: return @groups;
6493: }
6494:
6495: sub packages_tab_default {
6496: my ($uri,$varname)=@_;
6497: my (undef,$part,$name)=split(/\./,$varname);
6498:
6499: my (@extension,@specifics,$do_default);
6500: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
6501: my ($pack_type,$pack_part)=split(/_/,$package,2);
6502: if ($pack_type eq 'default') {
6503: $do_default=1;
6504: } elsif ($pack_type eq 'extension') {
6505: push(@extension,[$package,$pack_type,$pack_part]);
6506: } elsif ($pack_part eq $part || $pack_type eq 'part') {
6507: # only look at packages defaults for packages that this id is
6508: push(@specifics,[$package,$pack_type,$pack_part]);
6509: }
6510: }
6511: # first look for a package that matches the requested part id
6512: foreach my $package (@specifics) {
6513: my (undef,$pack_type,$pack_part)=@{$package};
6514: next if ($pack_part ne $part);
6515: if (defined($packagetab{"$pack_type&$name&default"})) {
6516: return $packagetab{"$pack_type&$name&default"};
6517: }
6518: }
6519: # look for any possible matching non extension_ package
6520: foreach my $package (@specifics) {
6521: my (undef,$pack_type,$pack_part)=@{$package};
6522: if (defined($packagetab{"$pack_type&$name&default"})) {
6523: return $packagetab{"$pack_type&$name&default"};
6524: }
6525: if ($pack_type eq 'part') { $pack_part='0'; }
6526: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
6527: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
6528: }
6529: }
6530: # look for any posible extension_ match
6531: foreach my $package (@extension) {
6532: my ($package,$pack_type)=@{$package};
6533: if (defined($packagetab{"$pack_type&$name&default"})) {
6534: return $packagetab{"$pack_type&$name&default"};
6535: }
6536: if (defined($packagetab{$package."&$name&default"})) {
6537: return $packagetab{$package."&$name&default"};
6538: }
6539: }
6540: # look for a global default setting
6541: if ($do_default && defined($packagetab{"default&$name&default"})) {
6542: return $packagetab{"default&$name&default"};
6543: }
6544: return undef;
6545: }
6546:
6547: sub add_prefix_and_part {
6548: my ($prefix,$part)=@_;
6549: my $keyroot;
6550: if (defined($prefix) && $prefix !~ /^__/) {
6551: # prefix that has a part already
6552: $keyroot=$prefix;
6553: } elsif (defined($prefix)) {
6554: # prefix that is missing a part
6555: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
6556: } else {
6557: # no prefix at all
6558: if (defined($part)) { $keyroot='_'.$part; }
6559: }
6560: return $keyroot;
6561: }
6562:
6563: # ---------------------------------------------------------------- Get metadata
6564:
6565: my %metaentry;
6566: sub metadata {
6567: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
6568: $uri=&declutter($uri);
6569: # if it is a non metadata possible uri return quickly
6570: if (($uri eq '') ||
6571: (($uri =~ m|^/*adm/|) &&
6572: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
6573: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ /^~/) ||
6574: ($uri =~ m|home/$match_username/public_html/|)) {
6575: return undef;
6576: }
6577: my $filename=$uri;
6578: $uri=~s/\.meta$//;
6579: #
6580: # Is the metadata already cached?
6581: # Look at timestamp of caching
6582: # Everything is cached by the main uri, libraries are never directly cached
6583: #
6584: if (!defined($liburi)) {
6585: my ($result,$cached)=&is_cached_new('meta',$uri);
6586: if (defined($cached)) { return $result->{':'.$what}; }
6587: }
6588: {
6589: #
6590: # Is this a recursive call for a library?
6591: #
6592: # if (! exists($metacache{$uri})) {
6593: # $metacache{$uri}={};
6594: # }
6595: if ($liburi) {
6596: $liburi=&declutter($liburi);
6597: $filename=$liburi;
6598: } else {
6599: &devalidate_cache_new('meta',$uri);
6600: undef(%metaentry);
6601: }
6602: my %metathesekeys=();
6603: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
6604: my $metastring;
6605: if ($uri !~ m -^(editupload)/-) {
6606: my $file=&filelocation('',&clutter($filename));
6607: #push(@{$metaentry{$uri.'.file'}},$file);
6608: $metastring=&getfile($file);
6609: }
6610: my $parser=HTML::LCParser->new(\$metastring);
6611: my $token;
6612: undef %metathesekeys;
6613: while ($token=$parser->get_token) {
6614: if ($token->[0] eq 'S') {
6615: if (defined($token->[2]->{'package'})) {
6616: #
6617: # This is a package - get package info
6618: #
6619: my $package=$token->[2]->{'package'};
6620: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
6621: if (defined($token->[2]->{'id'})) {
6622: $keyroot.='_'.$token->[2]->{'id'};
6623: }
6624: if ($metaentry{':packages'}) {
6625: $metaentry{':packages'}.=','.$package.$keyroot;
6626: } else {
6627: $metaentry{':packages'}=$package.$keyroot;
6628: }
6629: foreach my $pack_entry (keys(%packagetab)) {
6630: my $part=$keyroot;
6631: $part=~s/^\_//;
6632: if ($pack_entry=~/^\Q$package\E\&/ ||
6633: $pack_entry=~/^\Q$package\E_0\&/) {
6634: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
6635: # ignore package.tab specified default values
6636: # here &package_tab_default() will fetch those
6637: if ($subp eq 'default') { next; }
6638: my $value=$packagetab{$pack_entry};
6639: my $unikey;
6640: if ($pack =~ /_0$/) {
6641: $unikey='parameter_0_'.$name;
6642: $part=0;
6643: } else {
6644: $unikey='parameter'.$keyroot.'_'.$name;
6645: }
6646: if ($subp eq 'display') {
6647: $value.=' [Part: '.$part.']';
6648: }
6649: $metaentry{':'.$unikey.'.part'}=$part;
6650: $metathesekeys{$unikey}=1;
6651: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
6652: $metaentry{':'.$unikey.'.'.$subp}=$value;
6653: }
6654: if (defined($metaentry{':'.$unikey.'.default'})) {
6655: $metaentry{':'.$unikey}=
6656: $metaentry{':'.$unikey.'.default'};
6657: }
6658: }
6659: }
6660: } else {
6661: #
6662: # This is not a package - some other kind of start tag
6663: #
6664: my $entry=$token->[1];
6665: my $unikey;
6666: if ($entry eq 'import') {
6667: $unikey='';
6668: } else {
6669: $unikey=$entry;
6670: }
6671: $unikey.=&add_prefix_and_part($prefix,$token->[2]->{'part'});
6672:
6673: if (defined($token->[2]->{'id'})) {
6674: $unikey.='_'.$token->[2]->{'id'};
6675: }
6676:
6677: if ($entry eq 'import') {
6678: #
6679: # Importing a library here
6680: #
6681: if ($depthcount<20) {
6682: my $location=$parser->get_text('/import');
6683: my $dir=$filename;
6684: $dir=~s|[^/]*$||;
6685: $location=&filelocation($dir,$location);
6686: my $metadata =
6687: &metadata($uri,'keys', $location,$unikey,
6688: $depthcount+1);
6689: foreach my $meta (split(',',$metadata)) {
6690: $metaentry{':'.$meta}=$metaentry{':'.$meta};
6691: $metathesekeys{$meta}=1;
6692: }
6693: }
6694: } else {
6695:
6696: if (defined($token->[2]->{'name'})) {
6697: $unikey.='_'.$token->[2]->{'name'};
6698: }
6699: $metathesekeys{$unikey}=1;
6700: foreach my $param (@{$token->[3]}) {
6701: $metaentry{':'.$unikey.'.'.$param} =
6702: $token->[2]->{$param};
6703: }
6704: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
6705: my $default=$metaentry{':'.$unikey.'.default'};
6706: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
6707: # only ws inside the tag, and not in default, so use default
6708: # as value
6709: $metaentry{':'.$unikey}=$default;
6710: } elsif ( $internaltext =~ /\S/ ) {
6711: # something interesting inside the tag
6712: $metaentry{':'.$unikey}=$internaltext;
6713: } else {
6714: # no interesting values, don't set a default
6715: }
6716: # end of not-a-package not-a-library import
6717: }
6718: # end of not-a-package start tag
6719: }
6720: # the next is the end of "start tag"
6721: }
6722: }
6723: my ($extension) = ($uri =~ /\.(\w+)$/);
6724: $extension = lc($extension);
6725: if ($extension eq 'htm') { $extension='html'; }
6726:
6727: foreach my $key (keys(%packagetab)) {
6728: #no specific packages #how's our extension
6729: if ($key!~/^extension_\Q$extension\E&/) { next; }
6730: &metadata_create_package_def($uri,$key,'extension_'.$extension,
6731: \%metathesekeys);
6732: }
6733:
6734: if (!exists($metaentry{':packages'})
6735: || $packagetab{"import_defaults&extension_$extension"}) {
6736: foreach my $key (keys(%packagetab)) {
6737: #no specific packages well let's get default then
6738: if ($key!~/^default&/) { next; }
6739: &metadata_create_package_def($uri,$key,'default',
6740: \%metathesekeys);
6741: }
6742: }
6743: # are there custom rights to evaluate
6744: if ($metaentry{':copyright'} eq 'custom') {
6745:
6746: #
6747: # Importing a rights file here
6748: #
6749: unless ($depthcount) {
6750: my $location=$metaentry{':customdistributionfile'};
6751: my $dir=$filename;
6752: $dir=~s|[^/]*$||;
6753: $location=&filelocation($dir,$location);
6754: my $rights_metadata =
6755: &metadata($uri,'keys',$location,'_rights',
6756: $depthcount+1);
6757: foreach my $rights (split(',',$rights_metadata)) {
6758: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
6759: $metathesekeys{$rights}=1;
6760: }
6761: }
6762: }
6763: # uniqifiy package listing
6764: my %seen;
6765: my @uniq_packages =
6766: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
6767: $metaentry{':packages'} = join(',',@uniq_packages);
6768:
6769: $metaentry{':keys'} = join(',',keys(%metathesekeys));
6770: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
6771: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
6772: &do_cache_new('meta',$uri,\%metaentry,60*60);
6773: # this is the end of "was not already recently cached
6774: }
6775: return $metaentry{':'.$what};
6776: }
6777:
6778: sub metadata_create_package_def {
6779: my ($uri,$key,$package,$metathesekeys)=@_;
6780: my ($pack,$name,$subp)=split(/\&/,$key);
6781: if ($subp eq 'default') { next; }
6782:
6783: if (defined($metaentry{':packages'})) {
6784: $metaentry{':packages'}.=','.$package;
6785: } else {
6786: $metaentry{':packages'}=$package;
6787: }
6788: my $value=$packagetab{$key};
6789: my $unikey;
6790: $unikey='parameter_0_'.$name;
6791: $metaentry{':'.$unikey.'.part'}=0;
6792: $$metathesekeys{$unikey}=1;
6793: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
6794: $metaentry{':'.$unikey.'.'.$subp}=$value;
6795: }
6796: if (defined($metaentry{':'.$unikey.'.default'})) {
6797: $metaentry{':'.$unikey}=
6798: $metaentry{':'.$unikey.'.default'};
6799: }
6800: }
6801:
6802: sub metadata_generate_part0 {
6803: my ($metadata,$metacache,$uri) = @_;
6804: my %allnames;
6805: foreach my $metakey (keys(%$metadata)) {
6806: if ($metakey=~/^parameter\_(.*)/) {
6807: my $part=$$metacache{':'.$metakey.'.part'};
6808: my $name=$$metacache{':'.$metakey.'.name'};
6809: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
6810: $allnames{$name}=$part;
6811: }
6812: }
6813: }
6814: foreach my $name (keys(%allnames)) {
6815: $$metadata{"parameter_0_$name"}=1;
6816: my $key=":parameter_0_$name";
6817: $$metacache{"$key.part"}='0';
6818: $$metacache{"$key.name"}=$name;
6819: $$metacache{"$key.type"}=$$metacache{':parameter_'.
6820: $allnames{$name}.'_'.$name.
6821: '.type'};
6822: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
6823: '.display'};
6824: my $expr='[Part: '.$allnames{$name}.']';
6825: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
6826: $$metacache{"$key.display"}=$olddis;
6827: }
6828: }
6829:
6830: # ------------------------------------------------------ Devalidate title cache
6831:
6832: sub devalidate_title_cache {
6833: my ($url)=@_;
6834: if (!$env{'request.course.id'}) { return; }
6835: my $symb=&symbread($url);
6836: if (!$symb) { return; }
6837: my $key=$env{'request.course.id'}."\0".$symb;
6838: &devalidate_cache_new('title',$key);
6839: }
6840:
6841: # ------------------------------------------------- Get the title of a resource
6842:
6843: sub gettitle {
6844: my $urlsymb=shift;
6845: my $symb=&symbread($urlsymb);
6846: if ($symb) {
6847: my $key=$env{'request.course.id'}."\0".$symb;
6848: my ($result,$cached)=&is_cached_new('title',$key);
6849: if (defined($cached)) {
6850: return $result;
6851: }
6852: my ($map,$resid,$url)=&decode_symb($symb);
6853: my $title='';
6854: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
6855: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
6856: } else {
6857: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
6858: &GDBM_READER(),0640)) {
6859: my $mapid=$bighash{'map_pc_'.&clutter($map)};
6860: $title=$bighash{'title_'.$mapid.'.'.$resid};
6861: untie(%bighash);
6862: }
6863: }
6864: $title=~s/\&colon\;/\:/gs;
6865: if ($title) {
6866: return &do_cache_new('title',$key,$title,600);
6867: }
6868: $urlsymb=$url;
6869: }
6870: my $title=&metadata($urlsymb,'title');
6871: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
6872: return $title;
6873: }
6874:
6875: sub get_slot {
6876: my ($which,$cnum,$cdom)=@_;
6877: if (!$cnum || !$cdom) {
6878: (undef,my $courseid)=&whichuser();
6879: $cdom=$env{'course.'.$courseid.'.domain'};
6880: $cnum=$env{'course.'.$courseid.'.num'};
6881: }
6882: my $key=join("\0",'slots',$cdom,$cnum,$which);
6883: my %slotinfo;
6884: if (exists($remembered{$key})) {
6885: $slotinfo{$which} = $remembered{$key};
6886: } else {
6887: %slotinfo=&get('slots',[$which],$cdom,$cnum);
6888: &Apache::lonhomework::showhash(%slotinfo);
6889: my ($tmp)=keys(%slotinfo);
6890: if ($tmp=~/^error:/) { return (); }
6891: $remembered{$key} = $slotinfo{$which};
6892: }
6893: if (ref($slotinfo{$which}) eq 'HASH') {
6894: return %{$slotinfo{$which}};
6895: }
6896: return $slotinfo{$which};
6897: }
6898: # ------------------------------------------------- Update symbolic store links
6899:
6900: sub symblist {
6901: my ($mapname,%newhash)=@_;
6902: $mapname=&deversion(&declutter($mapname));
6903: my %hash;
6904: if (($env{'request.course.fn'}) && (%newhash)) {
6905: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
6906: &GDBM_WRCREAT(),0640)) {
6907: foreach my $url (keys %newhash) {
6908: next if ($url eq 'last_known'
6909: && $env{'form.no_update_last_known'});
6910: $hash{declutter($url)}=&encode_symb($mapname,
6911: $newhash{$url}->[1],
6912: $newhash{$url}->[0]);
6913: }
6914: if (untie(%hash)) {
6915: return 'ok';
6916: }
6917: }
6918: }
6919: return 'error';
6920: }
6921:
6922: # --------------------------------------------------------------- Verify a symb
6923:
6924: sub symbverify {
6925: my ($symb,$thisurl)=@_;
6926: my $thisfn=$thisurl;
6927: $thisfn=&declutter($thisfn);
6928: # direct jump to resource in page or to a sequence - will construct own symbs
6929: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
6930: # check URL part
6931: my ($map,$resid,$url)=&decode_symb($symb);
6932:
6933: unless ($url eq $thisfn) { return 0; }
6934:
6935: $symb=&symbclean($symb);
6936: $thisurl=&deversion($thisurl);
6937: $thisfn=&deversion($thisfn);
6938:
6939: my %bighash;
6940: my $okay=0;
6941:
6942: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
6943: &GDBM_READER(),0640)) {
6944: my $ids=$bighash{'ids_'.&clutter($thisurl)};
6945: unless ($ids) {
6946: $ids=$bighash{'ids_/'.$thisurl};
6947: }
6948: if ($ids) {
6949: # ------------------------------------------------------------------- Has ID(s)
6950: foreach my $id (split(/\,/,$ids)) {
6951: my ($mapid,$resid)=split(/\./,$id);
6952: if (
6953: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
6954: eq $symb) {
6955: if (($env{'request.role.adv'}) ||
6956: $bighash{'encrypted_'.$id} eq $env{'request.enc'}) {
6957: $okay=1;
6958: }
6959: }
6960: }
6961: }
6962: untie(%bighash);
6963: }
6964: return $okay;
6965: }
6966:
6967: # --------------------------------------------------------------- Clean-up symb
6968:
6969: sub symbclean {
6970: my $symb=shift;
6971: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
6972: # remove version from map
6973: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
6974:
6975: # remove version from URL
6976: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
6977:
6978: # remove wrapper
6979:
6980: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
6981: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
6982: return $symb;
6983: }
6984:
6985: # ---------------------------------------------- Split symb to find map and url
6986:
6987: sub encode_symb {
6988: my ($map,$resid,$url)=@_;
6989: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
6990: }
6991:
6992: sub decode_symb {
6993: my $symb=shift;
6994: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
6995: my ($map,$resid,$url)=split(/___/,$symb);
6996: return (&fixversion($map),$resid,&fixversion($url));
6997: }
6998:
6999: sub fixversion {
7000: my $fn=shift;
7001: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
7002: my %bighash;
7003: my $uri=&clutter($fn);
7004: my $key=$env{'request.course.id'}.'_'.$uri;
7005: # is this cached?
7006: my ($result,$cached)=&is_cached_new('courseresversion',$key);
7007: if (defined($cached)) { return $result; }
7008: # unfortunately not cached, or expired
7009: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7010: &GDBM_READER(),0640)) {
7011: if ($bighash{'version_'.$uri}) {
7012: my $version=$bighash{'version_'.$uri};
7013: unless (($version eq 'mostrecent') ||
7014: ($version==&getversion($uri))) {
7015: $uri=~s/\.(\w+)$/\.$version\.$1/;
7016: }
7017: }
7018: untie %bighash;
7019: }
7020: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
7021: }
7022:
7023: sub deversion {
7024: my $url=shift;
7025: $url=~s/\.\d+\.(\w+)$/\.$1/;
7026: return $url;
7027: }
7028:
7029: # ------------------------------------------------------ Return symb list entry
7030:
7031: sub symbread {
7032: my ($thisfn,$donotrecurse)=@_;
7033: my $cache_str='request.symbread.cached.'.$thisfn;
7034: if (defined($env{$cache_str})) { return $env{$cache_str}; }
7035: # no filename provided? try from environment
7036: unless ($thisfn) {
7037: if ($env{'request.symb'}) {
7038: return $env{$cache_str}=&symbclean($env{'request.symb'});
7039: }
7040: $thisfn=$env{'request.filename'};
7041: }
7042: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
7043: # is that filename actually a symb? Verify, clean, and return
7044: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
7045: if (&symbverify($thisfn,$1)) {
7046: return $env{$cache_str}=&symbclean($thisfn);
7047: }
7048: }
7049: $thisfn=declutter($thisfn);
7050: my %hash;
7051: my %bighash;
7052: my $syval='';
7053: if (($env{'request.course.fn'}) && ($thisfn)) {
7054: my $targetfn = $thisfn;
7055: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
7056: $targetfn = 'adm/wrapper/'.$thisfn;
7057: }
7058: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
7059: $targetfn=$1;
7060: }
7061: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
7062: &GDBM_READER(),0640)) {
7063: $syval=$hash{$targetfn};
7064: untie(%hash);
7065: }
7066: # ---------------------------------------------------------- There was an entry
7067: if ($syval) {
7068: #unless ($syval=~/\_\d+$/) {
7069: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
7070: #&appenv('request.ambiguous' => $thisfn);
7071: #return $env{$cache_str}='';
7072: #}
7073: #$syval.=$1;
7074: #}
7075: } else {
7076: # ------------------------------------------------------- Was not in symb table
7077: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7078: &GDBM_READER(),0640)) {
7079: # ---------------------------------------------- Get ID(s) for current resource
7080: my $ids=$bighash{'ids_'.&clutter($thisfn)};
7081: unless ($ids) {
7082: $ids=$bighash{'ids_/'.$thisfn};
7083: }
7084: unless ($ids) {
7085: # alias?
7086: $ids=$bighash{'mapalias_'.$thisfn};
7087: }
7088: if ($ids) {
7089: # ------------------------------------------------------------------- Has ID(s)
7090: my @possibilities=split(/\,/,$ids);
7091: if ($#possibilities==0) {
7092: # ----------------------------------------------- There is only one possibility
7093: my ($mapid,$resid)=split(/\./,$ids);
7094: $syval=&encode_symb($bighash{'map_id_'.$mapid},
7095: $resid,$thisfn);
7096: } elsif (!$donotrecurse) {
7097: # ------------------------------------------ There is more than one possibility
7098: my $realpossible=0;
7099: foreach my $id (@possibilities) {
7100: my $file=$bighash{'src_'.$id};
7101: if (&allowed('bre',$file)) {
7102: my ($mapid,$resid)=split(/\./,$id);
7103: if ($bighash{'map_type_'.$mapid} ne 'page') {
7104: $realpossible++;
7105: $syval=&encode_symb($bighash{'map_id_'.$mapid},
7106: $resid,$thisfn);
7107: }
7108: }
7109: }
7110: if ($realpossible!=1) { $syval=''; }
7111: } else {
7112: $syval='';
7113: }
7114: }
7115: untie(%bighash)
7116: }
7117: }
7118: if ($syval) {
7119: return $env{$cache_str}=$syval;
7120: }
7121: }
7122: &appenv('request.ambiguous' => $thisfn);
7123: return $env{$cache_str}='';
7124: }
7125:
7126: # ---------------------------------------------------------- Return random seed
7127:
7128: sub numval {
7129: my $txt=shift;
7130: $txt=~tr/A-J/0-9/;
7131: $txt=~tr/a-j/0-9/;
7132: $txt=~tr/K-T/0-9/;
7133: $txt=~tr/k-t/0-9/;
7134: $txt=~tr/U-Z/0-5/;
7135: $txt=~tr/u-z/0-5/;
7136: $txt=~s/\D//g;
7137: if ($_64bit) { if ($txt > 2**32) { return -1; } }
7138: return int($txt);
7139: }
7140:
7141: sub numval2 {
7142: my $txt=shift;
7143: $txt=~tr/A-J/0-9/;
7144: $txt=~tr/a-j/0-9/;
7145: $txt=~tr/K-T/0-9/;
7146: $txt=~tr/k-t/0-9/;
7147: $txt=~tr/U-Z/0-5/;
7148: $txt=~tr/u-z/0-5/;
7149: $txt=~s/\D//g;
7150: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
7151: my $total;
7152: foreach my $val (@txts) { $total+=$val; }
7153: if ($_64bit) { if ($total > 2**32) { return -1; } }
7154: return int($total);
7155: }
7156:
7157: sub numval3 {
7158: use integer;
7159: my $txt=shift;
7160: $txt=~tr/A-J/0-9/;
7161: $txt=~tr/a-j/0-9/;
7162: $txt=~tr/K-T/0-9/;
7163: $txt=~tr/k-t/0-9/;
7164: $txt=~tr/U-Z/0-5/;
7165: $txt=~tr/u-z/0-5/;
7166: $txt=~s/\D//g;
7167: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
7168: my $total;
7169: foreach my $val (@txts) { $total+=$val; }
7170: if ($_64bit) { $total=(($total<<32)>>32); }
7171: return $total;
7172: }
7173:
7174: sub digest {
7175: my ($data)=@_;
7176: my $digest=&Digest::MD5::md5($data);
7177: my ($a,$b,$c,$d)=unpack("iiii",$digest);
7178: my ($e,$f);
7179: {
7180: use integer;
7181: $e=($a+$b);
7182: $f=($c+$d);
7183: if ($_64bit) {
7184: $e=(($e<<32)>>32);
7185: $f=(($f<<32)>>32);
7186: }
7187: }
7188: if (wantarray) {
7189: return ($e,$f);
7190: } else {
7191: my $g;
7192: {
7193: use integer;
7194: $g=($e+$f);
7195: if ($_64bit) {
7196: $g=(($g<<32)>>32);
7197: }
7198: }
7199: return $g;
7200: }
7201: }
7202:
7203: sub latest_rnd_algorithm_id {
7204: return '64bit5';
7205: }
7206:
7207: sub get_rand_alg {
7208: my ($courseid)=@_;
7209: if (!$courseid) { $courseid=(&whichuser())[1]; }
7210: if ($courseid) {
7211: return $env{"course.$courseid.rndseed"};
7212: }
7213: return &latest_rnd_algorithm_id();
7214: }
7215:
7216: sub validCODE {
7217: my ($CODE)=@_;
7218: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
7219: return 0;
7220: }
7221:
7222: sub getCODE {
7223: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
7224: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
7225: defined($Apache::lonhomework::parsing_a_task) ) &&
7226: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
7227: return $Apache::lonhomework::history{'resource.CODE'};
7228: }
7229: return undef;
7230: }
7231:
7232: sub rndseed {
7233: my ($symb,$courseid,$domain,$username)=@_;
7234: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
7235: if (!defined($symb)) {
7236: unless ($symb=$wsymb) { return time; }
7237: }
7238: if (!$courseid) { $courseid=$wcourseid; }
7239: if (!$domain) { $domain=$wdomain; }
7240: if (!$username) { $username=$wusername }
7241: my $which=&get_rand_alg();
7242:
7243: if (defined(&getCODE())) {
7244: if ($which eq '64bit5') {
7245: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
7246: } elsif ($which eq '64bit4') {
7247: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
7248: } else {
7249: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
7250: }
7251: } elsif ($which eq '64bit5') {
7252: return &rndseed_64bit5($symb,$courseid,$domain,$username);
7253: } elsif ($which eq '64bit4') {
7254: return &rndseed_64bit4($symb,$courseid,$domain,$username);
7255: } elsif ($which eq '64bit3') {
7256: return &rndseed_64bit3($symb,$courseid,$domain,$username);
7257: } elsif ($which eq '64bit2') {
7258: return &rndseed_64bit2($symb,$courseid,$domain,$username);
7259: } elsif ($which eq '64bit') {
7260: return &rndseed_64bit($symb,$courseid,$domain,$username);
7261: }
7262: return &rndseed_32bit($symb,$courseid,$domain,$username);
7263: }
7264:
7265: sub rndseed_32bit {
7266: my ($symb,$courseid,$domain,$username)=@_;
7267: {
7268: use integer;
7269: my $symbchck=unpack("%32C*",$symb) << 27;
7270: my $symbseed=numval($symb) << 22;
7271: my $namechck=unpack("%32C*",$username) << 17;
7272: my $nameseed=numval($username) << 12;
7273: my $domainseed=unpack("%32C*",$domain) << 7;
7274: my $courseseed=unpack("%32C*",$courseid);
7275: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
7276: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7277: #&logthis("rndseed :$num:$symb");
7278: if ($_64bit) { $num=(($num<<32)>>32); }
7279: return $num;
7280: }
7281: }
7282:
7283: sub rndseed_64bit {
7284: my ($symb,$courseid,$domain,$username)=@_;
7285: {
7286: use integer;
7287: my $symbchck=unpack("%32S*",$symb) << 21;
7288: my $symbseed=numval($symb) << 10;
7289: my $namechck=unpack("%32S*",$username);
7290:
7291: my $nameseed=numval($username) << 21;
7292: my $domainseed=unpack("%32S*",$domain) << 10;
7293: my $courseseed=unpack("%32S*",$courseid);
7294:
7295: my $num1=$symbchck+$symbseed+$namechck;
7296: my $num2=$nameseed+$domainseed+$courseseed;
7297: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7298: #&logthis("rndseed :$num:$symb");
7299: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7300: return "$num1,$num2";
7301: }
7302: }
7303:
7304: sub rndseed_64bit2 {
7305: my ($symb,$courseid,$domain,$username)=@_;
7306: {
7307: use integer;
7308: # strings need to be an even # of cahracters long, it it is odd the
7309: # last characters gets thrown away
7310: my $symbchck=unpack("%32S*",$symb.' ') << 21;
7311: my $symbseed=numval($symb) << 10;
7312: my $namechck=unpack("%32S*",$username.' ');
7313:
7314: my $nameseed=numval($username) << 21;
7315: my $domainseed=unpack("%32S*",$domain.' ') << 10;
7316: my $courseseed=unpack("%32S*",$courseid.' ');
7317:
7318: my $num1=$symbchck+$symbseed+$namechck;
7319: my $num2=$nameseed+$domainseed+$courseseed;
7320: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7321: #&logthis("rndseed :$num:$symb");
7322: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7323: return "$num1,$num2";
7324: }
7325: }
7326:
7327: sub rndseed_64bit3 {
7328: my ($symb,$courseid,$domain,$username)=@_;
7329: {
7330: use integer;
7331: # strings need to be an even # of cahracters long, it it is odd the
7332: # last characters gets thrown away
7333: my $symbchck=unpack("%32S*",$symb.' ') << 21;
7334: my $symbseed=numval2($symb) << 10;
7335: my $namechck=unpack("%32S*",$username.' ');
7336:
7337: my $nameseed=numval2($username) << 21;
7338: my $domainseed=unpack("%32S*",$domain.' ') << 10;
7339: my $courseseed=unpack("%32S*",$courseid.' ');
7340:
7341: my $num1=$symbchck+$symbseed+$namechck;
7342: my $num2=$nameseed+$domainseed+$courseseed;
7343: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7344: #&logthis("rndseed :$num1:$num2:$_64bit");
7345: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7346:
7347: return "$num1:$num2";
7348: }
7349: }
7350:
7351: sub rndseed_64bit4 {
7352: my ($symb,$courseid,$domain,$username)=@_;
7353: {
7354: use integer;
7355: # strings need to be an even # of cahracters long, it it is odd the
7356: # last characters gets thrown away
7357: my $symbchck=unpack("%32S*",$symb.' ') << 21;
7358: my $symbseed=numval3($symb) << 10;
7359: my $namechck=unpack("%32S*",$username.' ');
7360:
7361: my $nameseed=numval3($username) << 21;
7362: my $domainseed=unpack("%32S*",$domain.' ') << 10;
7363: my $courseseed=unpack("%32S*",$courseid.' ');
7364:
7365: my $num1=$symbchck+$symbseed+$namechck;
7366: my $num2=$nameseed+$domainseed+$courseseed;
7367: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7368: #&logthis("rndseed :$num1:$num2:$_64bit");
7369: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7370:
7371: return "$num1:$num2";
7372: }
7373: }
7374:
7375: sub rndseed_64bit5 {
7376: my ($symb,$courseid,$domain,$username)=@_;
7377: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
7378: return "$num1:$num2";
7379: }
7380:
7381: sub rndseed_CODE_64bit {
7382: my ($symb,$courseid,$domain,$username)=@_;
7383: {
7384: use integer;
7385: my $symbchck=unpack("%32S*",$symb.' ') << 16;
7386: my $symbseed=numval2($symb);
7387: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
7388: my $CODEseed=numval(&getCODE());
7389: my $courseseed=unpack("%32S*",$courseid.' ');
7390: my $num1=$symbseed+$CODEchck;
7391: my $num2=$CODEseed+$courseseed+$symbchck;
7392: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
7393: #&logthis("rndseed :$num1:$num2:$symb");
7394: if ($_64bit) { $num1=(($num1<<32)>>32); }
7395: if ($_64bit) { $num2=(($num2<<32)>>32); }
7396: return "$num1:$num2";
7397: }
7398: }
7399:
7400: sub rndseed_CODE_64bit4 {
7401: my ($symb,$courseid,$domain,$username)=@_;
7402: {
7403: use integer;
7404: my $symbchck=unpack("%32S*",$symb.' ') << 16;
7405: my $symbseed=numval3($symb);
7406: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
7407: my $CODEseed=numval3(&getCODE());
7408: my $courseseed=unpack("%32S*",$courseid.' ');
7409: my $num1=$symbseed+$CODEchck;
7410: my $num2=$CODEseed+$courseseed+$symbchck;
7411: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
7412: #&logthis("rndseed :$num1:$num2:$symb");
7413: if ($_64bit) { $num1=(($num1<<32)>>32); }
7414: if ($_64bit) { $num2=(($num2<<32)>>32); }
7415: return "$num1:$num2";
7416: }
7417: }
7418:
7419: sub rndseed_CODE_64bit5 {
7420: my ($symb,$courseid,$domain,$username)=@_;
7421: my $code = &getCODE();
7422: my ($num1,$num2)=&digest("$symb,$courseid,$code");
7423: return "$num1:$num2";
7424: }
7425:
7426: sub setup_random_from_rndseed {
7427: my ($rndseed)=@_;
7428: if ($rndseed =~/([,:])/) {
7429: my ($num1,$num2)=split(/[,:]/,$rndseed);
7430: &Math::Random::random_set_seed(abs($num1),abs($num2));
7431: } else {
7432: &Math::Random::random_set_seed_from_phrase($rndseed);
7433: }
7434: }
7435:
7436: sub latest_receipt_algorithm_id {
7437: return 'receipt3';
7438: }
7439:
7440: sub recunique {
7441: my $fucourseid=shift;
7442: my $unique;
7443: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
7444: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
7445: $unique=$env{"course.$fucourseid.internal.encseed"};
7446: } else {
7447: $unique=$perlvar{'lonReceipt'};
7448: }
7449: return unpack("%32C*",$unique);
7450: }
7451:
7452: sub recprefix {
7453: my $fucourseid=shift;
7454: my $prefix;
7455: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
7456: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
7457: $prefix=$env{"course.$fucourseid.internal.encpref"};
7458: } else {
7459: $prefix=$perlvar{'lonHostID'};
7460: }
7461: return unpack("%32C*",$prefix);
7462: }
7463:
7464: sub ireceipt {
7465: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
7466:
7467: my $return =&recprefix($fucourseid).'-';
7468:
7469: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
7470: $env{'request.state'} eq 'construct') {
7471: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
7472: return $return;
7473: }
7474:
7475: my $cuname=unpack("%32C*",$funame);
7476: my $cudom=unpack("%32C*",$fudom);
7477: my $cucourseid=unpack("%32C*",$fucourseid);
7478: my $cusymb=unpack("%32C*",$fusymb);
7479: my $cunique=&recunique($fucourseid);
7480: my $cpart=unpack("%32S*",$part);
7481: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
7482:
7483: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
7484:
7485: $return.= ($cunique%$cuname+
7486: $cunique%$cudom+
7487: $cusymb%$cuname+
7488: $cusymb%$cudom+
7489: $cucourseid%$cuname+
7490: $cucourseid%$cudom+
7491: $cpart%$cuname+
7492: $cpart%$cudom);
7493: } else {
7494: $return.= ($cunique%$cuname+
7495: $cunique%$cudom+
7496: $cusymb%$cuname+
7497: $cusymb%$cudom+
7498: $cucourseid%$cuname+
7499: $cucourseid%$cudom);
7500: }
7501: return $return;
7502: }
7503:
7504: sub receipt {
7505: my ($part)=@_;
7506: my ($symb,$courseid,$domain,$name) = &whichuser();
7507: return &ireceipt($name,$domain,$courseid,$symb,$part);
7508: }
7509:
7510: sub whichuser {
7511: my ($passedsymb)=@_;
7512: my ($symb,$courseid,$domain,$name,$publicuser);
7513: if (defined($env{'form.grade_symb'})) {
7514: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
7515: my $allowed=&allowed('vgr',$tmp_courseid);
7516: if (!$allowed &&
7517: exists($env{'request.course.sec'}) &&
7518: $env{'request.course.sec'} !~ /^\s*$/) {
7519: $allowed=&allowed('vgr',$tmp_courseid.
7520: '/'.$env{'request.course.sec'});
7521: }
7522: if ($allowed) {
7523: ($symb)=&get_env_multiple('form.grade_symb');
7524: $courseid=$tmp_courseid;
7525: ($domain)=&get_env_multiple('form.grade_domain');
7526: ($name)=&get_env_multiple('form.grade_username');
7527: return ($symb,$courseid,$domain,$name,$publicuser);
7528: }
7529: }
7530: if (!$passedsymb) {
7531: $symb=&symbread();
7532: } else {
7533: $symb=$passedsymb;
7534: }
7535: $courseid=$env{'request.course.id'};
7536: $domain=$env{'user.domain'};
7537: $name=$env{'user.name'};
7538: if ($name eq 'public' && $domain eq 'public') {
7539: if (!defined($env{'form.username'})) {
7540: $env{'form.username'}.=time.rand(10000000);
7541: }
7542: $name.=$env{'form.username'};
7543: }
7544: return ($symb,$courseid,$domain,$name,$publicuser);
7545:
7546: }
7547:
7548: # ------------------------------------------------------------ Serves up a file
7549: # returns either the contents of the file or
7550: # -1 if the file doesn't exist
7551: #
7552: # if the target is a file that was uploaded via DOCS,
7553: # a check will be made to see if a current copy exists on the local server,
7554: # if it does this will be served, otherwise a copy will be retrieved from
7555: # the home server for the course and stored in /home/httpd/html/userfiles on
7556: # the local server.
7557:
7558: sub getfile {
7559: my ($file) = @_;
7560: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
7561: &repcopy($file);
7562: return &readfile($file);
7563: }
7564:
7565: sub repcopy_userfile {
7566: my ($file)=@_;
7567: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
7568: if ($file =~ m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
7569: my ($cdom,$cnum,$filename) =
7570: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
7571: my $uri="/uploaded/$cdom/$cnum/$filename";
7572: if (-e "$file") {
7573: # we already have a local copy, check it out
7574: my @fileinfo = stat($file);
7575: my $rtncode;
7576: my $info;
7577: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
7578: if ($lwpresp ne 'ok') {
7579: # there is no such file anymore, even though we had a local copy
7580: if ($rtncode eq '404') {
7581: unlink($file);
7582: }
7583: return -1;
7584: }
7585: if ($info < $fileinfo[9]) {
7586: # nice, the file we have is up-to-date, just say okay
7587: return 'ok';
7588: } else {
7589: # the file is outdated, get rid of it
7590: unlink($file);
7591: }
7592: }
7593: # one way or the other, at this point, we don't have the file
7594: # construct the correct path for the file
7595: my @parts = ($cdom,$cnum);
7596: if ($filename =~ m|^(.+)/[^/]+$|) {
7597: push @parts, split(/\//,$1);
7598: }
7599: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
7600: foreach my $part (@parts) {
7601: $path .= '/'.$part;
7602: if (!-e $path) {
7603: mkdir($path,0770);
7604: }
7605: }
7606: # now the path exists for sure
7607: # get a user agent
7608: my $ua=new LWP::UserAgent;
7609: my $transferfile=$file.'.in.transfer';
7610: # FIXME: this should flock
7611: if (-e $transferfile) { return 'ok'; }
7612: my $request;
7613: $uri=~s/^\///;
7614: $request=new HTTP::Request('GET','http://'.&hostname(&homeserver($cnum,$cdom)).'/raw/'.$uri);
7615: my $response=$ua->request($request,$transferfile);
7616: # did it work?
7617: if ($response->is_error()) {
7618: unlink($transferfile);
7619: &logthis("Userfile repcopy failed for $uri");
7620: return -1;
7621: }
7622: # worked, rename the transfer file
7623: rename($transferfile,$file);
7624: return 'ok';
7625: }
7626:
7627: sub tokenwrapper {
7628: my $uri=shift;
7629: $uri=~s|^http\://([^/]+)||;
7630: $uri=~s|^/||;
7631: $env{'user.environment'}=~/\/([^\/]+)\.id/;
7632: my $token=$1;
7633: my (undef,$udom,$uname,$file)=split('/',$uri,4);
7634: if ($udom && $uname && $file) {
7635: $file=~s|(\?\.*)*$||;
7636: &appenv("userfile.$udom/$uname/$file" => $env{'request.course.id'});
7637: return 'http://'.&hostname(&homeserver($uname,$udom)).'/'.$uri.
7638: (($uri=~/\?/)?'&':'?').'token='.$token.
7639: '&tokenissued='.$perlvar{'lonHostID'};
7640: } else {
7641: return '/adm/notfound.html';
7642: }
7643: }
7644:
7645: # call with reqtype HEAD: get last modification time
7646: # call with reqtype GET: get the file contents
7647: # Do not call this with reqtype GET for large files! It loads everything into memory
7648: #
7649: sub getuploaded {
7650: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
7651: $uri=~s/^\///;
7652: $uri = 'http://'.&hostname(&homeserver($cnum,$cdom)).'/raw/'.$uri;
7653: my $ua=new LWP::UserAgent;
7654: my $request=new HTTP::Request($reqtype,$uri);
7655: my $response=$ua->request($request);
7656: $$rtncode = $response->code;
7657: if (! $response->is_success()) {
7658: return 'failed';
7659: }
7660: if ($reqtype eq 'HEAD') {
7661: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
7662: } elsif ($reqtype eq 'GET') {
7663: $$info = $response->content;
7664: }
7665: return 'ok';
7666: }
7667:
7668: sub readfile {
7669: my $file = shift;
7670: if ( (! -e $file ) || ($file eq '') ) { return -1; };
7671: my $fh;
7672: open($fh,"<$file");
7673: my $a='';
7674: while (my $line = <$fh>) { $a .= $line; }
7675: return $a;
7676: }
7677:
7678: sub filelocation {
7679: my ($dir,$file) = @_;
7680: my $location;
7681: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
7682:
7683: if ($file =~ m-^/adm/-) {
7684: $file=~s-^/adm/wrapper/-/-;
7685: $file=~s-^/adm/coursedocs/showdoc/-/-;
7686: }
7687:
7688: if ($file=~m:^/~:) { # is a contruction space reference
7689: $location = $file;
7690: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
7691: } elsif ($file=~m{^/home/$match_username/public_html/}) {
7692: # is a correct contruction space reference
7693: $location = $file;
7694: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
7695: my ($udom,$uname,$filename)=
7696: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
7697: my $home=&homeserver($uname,$udom);
7698: my $is_me=0;
7699: my @ids=¤t_machine_ids();
7700: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
7701: if ($is_me) {
7702: $location=&propath($udom,$uname).
7703: '/userfiles/'.$filename;
7704: } else {
7705: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
7706: $udom.'/'.$uname.'/'.$filename;
7707: }
7708: } elsif ($file =~ m-^/adm/-) {
7709: $location = $perlvar{'lonDocRoot'}.'/'.$file;
7710: } else {
7711: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
7712: $file=~s:^/res/:/:;
7713: if ( !( $file =~ m:^/:) ) {
7714: $location = $dir. '/'.$file;
7715: } else {
7716: $location = '/home/httpd/html/res'.$file;
7717: }
7718: }
7719: $location=~s://+:/:g; # remove duplicate /
7720: while ($location=~m:/\.\./:) {$location=~ s:/[^/]+/\.\./:/:g;} #remove dir/..
7721: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
7722: return $location;
7723: }
7724:
7725: sub hreflocation {
7726: my ($dir,$file)=@_;
7727: unless (($file=~m-^http://-i) || ($file=~m-^/-)) {
7728: $file=filelocation($dir,$file);
7729: } elsif ($file=~m-^/adm/-) {
7730: $file=~s-^/adm/wrapper/-/-;
7731: $file=~s-^/adm/coursedocs/showdoc/-/-;
7732: }
7733: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
7734: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
7735: } elsif ($file=~m-/home/($match_username)/public_html/-) {
7736: $file=~s-^/home/($match_username)/public_html/-/~$1/-;
7737: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
7738: $file=~s-^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/
7739: -/uploaded/$1/$2/-x;
7740: }
7741: return $file;
7742: }
7743:
7744: sub current_machine_domains {
7745: return &machine_domains(&hostname($perlvar{'lonHostID'}));
7746: }
7747:
7748: sub machine_domains {
7749: my ($hostname) = @_;
7750: my @domains;
7751: my %hostname = &all_hostnames();
7752: while( my($id, $name) = each(%hostname)) {
7753: # &logthis("-$id-$name-$hostname-");
7754: if ($hostname eq $name) {
7755: push(@domains,&host_domain($id));
7756: }
7757: }
7758: return @domains;
7759: }
7760:
7761: sub current_machine_ids {
7762: return &machine_ids(&hostname($perlvar{'lonHostID'}));
7763: }
7764:
7765: sub machine_ids {
7766: my ($hostname) = @_;
7767: $hostname ||= &hostname($perlvar{'lonHostID'});
7768: my @ids;
7769: my %name_to_host = &all_names();
7770: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
7771: return @{ $name_to_host{$hostname} };
7772: }
7773: return;
7774: }
7775:
7776: sub additional_machine_domains {
7777: my @domains;
7778: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
7779: while( my $line = <$fh>) {
7780: $line =~ s/\s//g;
7781: push(@domains,$line);
7782: }
7783: return @domains;
7784: }
7785:
7786: sub default_login_domain {
7787: my $domain = $perlvar{'lonDefDomain'};
7788: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
7789: foreach my $posdom (¤t_machine_domains(),
7790: &additional_machine_domains()) {
7791: if (lc($posdom) eq lc($testdomain)) {
7792: $domain=$posdom;
7793: last;
7794: }
7795: }
7796: return $domain;
7797: }
7798:
7799: # ------------------------------------------------------------- Declutters URLs
7800:
7801: sub declutter {
7802: my $thisfn=shift;
7803: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
7804: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
7805: $thisfn=~s/^\///;
7806: $thisfn=~s|^adm/wrapper/||;
7807: $thisfn=~s|^adm/coursedocs/showdoc/||;
7808: $thisfn=~s/^res\///;
7809: $thisfn=~s/\?.+$//;
7810: return $thisfn;
7811: }
7812:
7813: # ------------------------------------------------------------- Clutter up URLs
7814:
7815: sub clutter {
7816: my $thisfn='/'.&declutter(shift);
7817: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
7818: || $thisfn =~ m{^/adm/(includes|pages)} ) {
7819: $thisfn='/res'.$thisfn;
7820: }
7821: if ($thisfn !~m|/adm|) {
7822: if ($thisfn =~ m|/ext/|) {
7823: $thisfn='/adm/wrapper'.$thisfn;
7824: } else {
7825: my ($ext) = ($thisfn =~ /\.(\w+)$/);
7826: my $embstyle=&Apache::loncommon::fileembstyle($ext);
7827: if ($embstyle eq 'ssi'
7828: || ($embstyle eq 'hdn')
7829: || ($embstyle eq 'rat')
7830: || ($embstyle eq 'prv')
7831: || ($embstyle eq 'ign')) {
7832: #do nothing with these
7833: } elsif (($embstyle eq 'img')
7834: || ($embstyle eq 'emb')
7835: || ($embstyle eq 'wrp')) {
7836: $thisfn='/adm/wrapper'.$thisfn;
7837: } elsif ($embstyle eq 'unk'
7838: && $thisfn!~/\.(sequence|page)$/) {
7839: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
7840: } else {
7841: # &logthis("Got a blank emb style");
7842: }
7843: }
7844: }
7845: return $thisfn;
7846: }
7847:
7848: sub clutter_with_no_wrapper {
7849: my $uri = &clutter(shift);
7850: if ($uri =~ m-^/adm/-) {
7851: $uri =~ s-^/adm/wrapper/-/-;
7852: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
7853: }
7854: return $uri;
7855: }
7856:
7857: sub freeze_escape {
7858: my ($value)=@_;
7859: if (ref($value)) {
7860: $value=&nfreeze($value);
7861: return '__FROZEN__'.&escape($value);
7862: }
7863: return &escape($value);
7864: }
7865:
7866:
7867: sub thaw_unescape {
7868: my ($value)=@_;
7869: if ($value =~ /^__FROZEN__/) {
7870: substr($value,0,10,undef);
7871: $value=&unescape($value);
7872: return &thaw($value);
7873: }
7874: return &unescape($value);
7875: }
7876:
7877: sub correct_line_ends {
7878: my ($result)=@_;
7879: $$result =~s/\r\n/\n/mg;
7880: $$result =~s/\r/\n/mg;
7881: }
7882: # ================================================================ Main Program
7883:
7884: sub goodbye {
7885: &logthis("Starting Shut down");
7886: #not converted to using infrastruture and probably shouldn't be
7887: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
7888: #converted
7889: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
7890: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
7891: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
7892: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
7893: #1.1 only
7894: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
7895: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
7896: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
7897: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
7898: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
7899: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
7900: &logthis(sprintf("%-20s is %s",'hits',$hits));
7901: &flushcourselogs();
7902: &logthis("Shutting down");
7903: }
7904:
7905: sub get_dns {
7906: my ($url,$func,$ignore_cache) = @_;
7907: if (!$ignore_cache) {
7908: my ($content,$cached)=
7909: &Apache::lonnet::is_cached_new('dns',$url);
7910: if ($cached) {
7911: &$func($content);
7912: return;
7913: }
7914: }
7915:
7916: my %alldns;
7917: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
7918: foreach my $dns (<$config>) {
7919: next if ($dns !~ /^\^(\S*)/x);
7920: $alldns{$1} = 1;
7921: }
7922: while (%alldns) {
7923: my ($dns) = keys(%alldns);
7924: delete($alldns{$dns});
7925: my $ua=new LWP::UserAgent;
7926: my $request=new HTTP::Request('GET',"http://$dns$url");
7927: my $response=$ua->request($request);
7928: next if ($response->is_error());
7929: my @content = split("\n",$response->content);
7930: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
7931: &$func(\@content);
7932: return;
7933: }
7934: close($config);
7935: my $which = (split('/',$url))[3];
7936: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
7937: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
7938: my @content = <$config>;
7939: &$func(\@content);
7940: return;
7941: }
7942: # ------------------------------------------------------------ Read domain file
7943: {
7944: my $loaded;
7945: my %domain;
7946:
7947: sub parse_domain_tab {
7948: my ($lines) = @_;
7949: foreach my $line (@$lines) {
7950: next if ($line =~ /^(\#|\s*$ )/x);
7951:
7952: chomp($line);
7953: my ($name,@elements) = split(/:/,$line,9);
7954: my %this_domain;
7955: foreach my $field ('description', 'auth_def', 'auth_arg_def',
7956: 'lang_def', 'city', 'longi', 'lati',
7957: 'primary') {
7958: $this_domain{$field} = shift(@elements);
7959: }
7960: $domain{$name} = \%this_domain;
7961: }
7962: }
7963:
7964: sub reset_domain_info {
7965: undef($loaded);
7966: undef(%domain);
7967: }
7968:
7969: sub load_domain_tab {
7970: my ($ignore_cache) = @_;
7971: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
7972: my $fh;
7973: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
7974: my @lines = <$fh>;
7975: &parse_domain_tab(\@lines);
7976: }
7977: close($fh);
7978: $loaded = 1;
7979: }
7980:
7981: sub domain {
7982: &load_domain_tab() if (!$loaded);
7983:
7984: my ($name,$what) = @_;
7985: return if ( !exists($domain{$name}) );
7986:
7987: if (!$what) {
7988: return $domain{$name}{'description'};
7989: }
7990: return $domain{$name}{$what};
7991: }
7992: }
7993:
7994:
7995: # ------------------------------------------------------------- Read hosts file
7996: {
7997: my %hostname;
7998: my %hostdom;
7999: my %libserv;
8000: my $loaded;
8001: my %name_to_host;
8002:
8003: sub parse_hosts_tab {
8004: my ($file) = @_;
8005: foreach my $configline (@$file) {
8006: next if ($configline =~ /^(\#|\s*$ )/x);
8007: next if ($configline =~ /^\^/);
8008: chomp($configline);
8009: my ($id,$domain,$role,$name)=split(/:/,$configline);
8010: $name=~s/\s//g;
8011: if ($id && $domain && $role && $name) {
8012: $hostname{$id}=$name;
8013: push(@{$name_to_host{$name}}, $id);
8014: $hostdom{$id}=$domain;
8015: if ($role eq 'library') { $libserv{$id}=$name; }
8016: }
8017: }
8018: }
8019:
8020: sub reset_hosts_info {
8021: &purge_remembered();
8022: &reset_domain_info();
8023: &reset_hosts_ip_info();
8024: undef(%name_to_host);
8025: undef(%hostname);
8026: undef(%hostdom);
8027: undef(%libserv);
8028: undef($loaded);
8029: }
8030:
8031: sub load_hosts_tab {
8032: my ($ignore_cache) = @_;
8033: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
8034: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
8035: my @config = <$config>;
8036: &parse_hosts_tab(\@config);
8037: close($config);
8038: $loaded=1;
8039: }
8040:
8041: sub hostname {
8042: &load_hosts_tab() if (!$loaded);
8043:
8044: my ($lonid) = @_;
8045: return $hostname{$lonid};
8046: }
8047:
8048: sub all_hostnames {
8049: &load_hosts_tab() if (!$loaded);
8050:
8051: return %hostname;
8052: }
8053:
8054: sub all_names {
8055: &load_hosts_tab() if (!$loaded);
8056:
8057: return %name_to_host;
8058: }
8059:
8060: sub is_library {
8061: &load_hosts_tab() if (!$loaded);
8062:
8063: return exists($libserv{$_[0]});
8064: }
8065:
8066: sub all_library {
8067: &load_hosts_tab() if (!$loaded);
8068:
8069: return %libserv;
8070: }
8071:
8072: sub get_servers {
8073: &load_hosts_tab() if (!$loaded);
8074:
8075: my ($domain,$type) = @_;
8076: my %possible_hosts = ($type eq 'library') ? %libserv
8077: : %hostname;
8078: my %result;
8079: if (ref($domain) eq 'ARRAY') {
8080: while ( my ($host,$hostname) = each(%possible_hosts)) {
8081: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
8082: $result{$host} = $hostname;
8083: }
8084: }
8085: } else {
8086: while ( my ($host,$hostname) = each(%possible_hosts)) {
8087: if ($hostdom{$host} eq $domain) {
8088: $result{$host} = $hostname;
8089: }
8090: }
8091: }
8092: return %result;
8093: }
8094:
8095: sub host_domain {
8096: &load_hosts_tab() if (!$loaded);
8097:
8098: my ($lonid) = @_;
8099: return $hostdom{$lonid};
8100: }
8101:
8102: sub all_domains {
8103: &load_hosts_tab() if (!$loaded);
8104:
8105: my %seen;
8106: my @uniq = grep(!$seen{$_}++, values(%hostdom));
8107: return @uniq;
8108: }
8109: }
8110:
8111: {
8112: my %iphost;
8113: my %name_to_ip;
8114: my %lonid_to_ip;
8115:
8116: sub get_hosts_from_ip {
8117: my ($ip) = @_;
8118: my %iphosts = &get_iphost();
8119: if (ref($iphosts{$ip})) {
8120: return @{$iphosts{$ip}};
8121: }
8122: return;
8123: }
8124:
8125: sub reset_hosts_ip_info {
8126: undef(%iphost);
8127: undef(%name_to_ip);
8128: undef(%lonid_to_ip);
8129: }
8130:
8131: sub get_host_ip {
8132: my ($lonid) = @_;
8133: if (exists($lonid_to_ip{$lonid})) {
8134: return $lonid_to_ip{$lonid};
8135: }
8136: my $name=&hostname($lonid);
8137: my $ip = gethostbyname($name);
8138: return if (!$ip || length($ip) ne 4);
8139: $ip=inet_ntoa($ip);
8140: $name_to_ip{$name} = $ip;
8141: $lonid_to_ip{$lonid} = $ip;
8142: return $ip;
8143: }
8144:
8145: sub get_iphost {
8146: my ($ignore_cache) = @_;
8147:
8148: if (!$ignore_cache) {
8149: if (%iphost) {
8150: return %iphost;
8151: }
8152: my ($ip_info,$cached)=
8153: &Apache::lonnet::is_cached_new('iphost','iphost');
8154: if ($cached) {
8155: %iphost = %{$ip_info->[0]};
8156: %name_to_ip = %{$ip_info->[1]};
8157: %lonid_to_ip = %{$ip_info->[2]};
8158: return %iphost;
8159: }
8160: }
8161:
8162: # get yesterday's info for fallback
8163: my %old_name_to_ip;
8164: my ($ip_info,$cached)=
8165: &Apache::lonnet::is_cached_new('iphost','iphost');
8166: if ($cached) {
8167: %old_name_to_ip = %{$ip_info->[1]};
8168: }
8169:
8170: my %name_to_host = &all_names();
8171: foreach my $name (keys(%name_to_host)) {
8172: my $ip;
8173: if (!exists($name_to_ip{$name})) {
8174: $ip = gethostbyname($name);
8175: if (!$ip || length($ip) ne 4) {
8176: if (defined($old_name_to_ip{$name})) {
8177: $ip = $old_name_to_ip{$name};
8178: &logthis("Can't find $name defaulting to old $ip");
8179: } else {
8180: &logthis("Name $name no IP found");
8181: next;
8182: }
8183: } else {
8184: $ip=inet_ntoa($ip);
8185: }
8186: $name_to_ip{$name} = $ip;
8187: } else {
8188: $ip = $name_to_ip{$name};
8189: }
8190: foreach my $id (@{ $name_to_host{$name} }) {
8191: $lonid_to_ip{$id} = $ip;
8192: }
8193: push(@{$iphost{$ip}},@{$name_to_host{$name}});
8194: }
8195: &Apache::lonnet::do_cache_new('iphost','iphost',
8196: [\%iphost,\%name_to_ip,\%lonid_to_ip],
8197: 48*60*60);
8198:
8199: return %iphost;
8200: }
8201: }
8202:
8203: BEGIN {
8204:
8205: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
8206: unless ($readit) {
8207: {
8208: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
8209: %perlvar = (%perlvar,%{$configvars});
8210: }
8211:
8212:
8213: # ------------------------------------------------------ Read spare server file
8214: {
8215: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
8216:
8217: while (my $configline=<$config>) {
8218: chomp($configline);
8219: if ($configline) {
8220: my ($host,$type) = split(':',$configline,2);
8221: if (!defined($type) || $type eq '') { $type = 'default' };
8222: push(@{ $spareid{$type} }, $host);
8223: }
8224: }
8225: close($config);
8226: }
8227: # ------------------------------------------------------------ Read permissions
8228: {
8229: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
8230:
8231: while (my $configline=<$config>) {
8232: chomp($configline);
8233: if ($configline) {
8234: my ($role,$perm)=split(/ /,$configline);
8235: if ($perm ne '') { $pr{$role}=$perm; }
8236: }
8237: }
8238: close($config);
8239: }
8240:
8241: # -------------------------------------------- Read plain texts for permissions
8242: {
8243: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
8244:
8245: while (my $configline=<$config>) {
8246: chomp($configline);
8247: if ($configline) {
8248: my ($short,@plain)=split(/:/,$configline);
8249: %{$prp{$short}} = ();
8250: if (@plain > 0) {
8251: $prp{$short}{'std'} = $plain[0];
8252: for (my $i=1; $i<@plain; $i++) {
8253: $prp{$short}{'alt'.$i} = $plain[$i];
8254: }
8255: }
8256: }
8257: }
8258: close($config);
8259: }
8260:
8261: # ---------------------------------------------------------- Read package table
8262: {
8263: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
8264:
8265: while (my $configline=<$config>) {
8266: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
8267: chomp($configline);
8268: my ($short,$plain)=split(/:/,$configline);
8269: my ($pack,$name)=split(/\&/,$short);
8270: if ($plain ne '') {
8271: $packagetab{$pack.'&'.$name.'&name'}=$name;
8272: $packagetab{$short}=$plain;
8273: }
8274: }
8275: close($config);
8276: }
8277:
8278: # ------------- set up temporary directory
8279: {
8280: $tmpdir = $perlvar{'lonDaemons'}.'/tmp/';
8281:
8282: }
8283:
8284: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
8285: 'compress_threshold'=> 20_000,
8286: });
8287:
8288: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
8289: $dumpcount=0;
8290:
8291: &logtouch();
8292: &logthis('<font color="yellow">INFO: Read configuration</font>');
8293: $readit=1;
8294: {
8295: use integer;
8296: my $test=(2**32)+1;
8297: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
8298: &logthis(" Detected 64bit platform ($_64bit)");
8299: }
8300: }
8301: }
8302:
8303: 1;
8304: __END__
8305:
8306: =pod
8307:
8308: =head1 NAME
8309:
8310: Apache::lonnet - Subroutines to ask questions about things in the network.
8311:
8312: =head1 SYNOPSIS
8313:
8314: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
8315:
8316: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
8317:
8318: Common parameters:
8319:
8320: =over 4
8321:
8322: =item *
8323:
8324: $uname : an internal username (if $cname expecting a course Id specifically)
8325:
8326: =item *
8327:
8328: $udom : a domain (if $cdom expecting a course's domain specifically)
8329:
8330: =item *
8331:
8332: $symb : a resource instance identifier
8333:
8334: =item *
8335:
8336: $namespace : the name of a .db file that contains the data needed or
8337: being set.
8338:
8339: =back
8340:
8341: =head1 OVERVIEW
8342:
8343: lonnet provides subroutines which interact with the
8344: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
8345: about classes, users, and resources.
8346:
8347: For many of these objects you can also use this to store data about
8348: them or modify them in various ways.
8349:
8350: =head2 Symbs
8351:
8352: To identify a specific instance of a resource, LON-CAPA uses symbols
8353: or "symbs"X<symb>. These identifiers are built from the URL of the
8354: map, the resource number of the resource in the map, and the URL of
8355: the resource itself. The latter is somewhat redundant, but might help
8356: if maps change.
8357:
8358: An example is
8359:
8360: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
8361:
8362: The respective map entry is
8363:
8364: <resource id="19" src="/res/msu/korte/tests/part12.problem"
8365: title="Problem 2">
8366: </resource>
8367:
8368: Symbs are used by the random number generator, as well as to store and
8369: restore data specific to a certain instance of for example a problem.
8370:
8371: =head2 Storing And Retrieving Data
8372:
8373: X<store()>X<cstore()>X<restore()>Three of the most important functions
8374: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
8375: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
8376: is is the non-critical message twin of cstore. These functions are for
8377: handlers to store a perl hash to a user's permanent data space in an
8378: easy manner, and to retrieve it again on another call. It is expected
8379: that a handler would use this once at the beginning to retrieve data,
8380: and then again once at the end to send only the new data back.
8381:
8382: The data is stored in the user's data directory on the user's
8383: homeserver under the ID of the course.
8384:
8385: The hash that is returned by restore will have all of the previous
8386: value for all of the elements of the hash.
8387:
8388: Example:
8389:
8390: #creating a hash
8391: my %hash;
8392: $hash{'foo'}='bar';
8393:
8394: #storing it
8395: &Apache::lonnet::cstore(\%hash);
8396:
8397: #changing a value
8398: $hash{'foo'}='notbar';
8399:
8400: #adding a new value
8401: $hash{'bar'}='foo';
8402: &Apache::lonnet::cstore(\%hash);
8403:
8404: #retrieving the hash
8405: my %history=&Apache::lonnet::restore();
8406:
8407: #print the hash
8408: foreach my $key (sort(keys(%history))) {
8409: print("\%history{$key} = $history{$key}");
8410: }
8411:
8412: Will print out:
8413:
8414: %history{1:foo} = bar
8415: %history{1:keys} = foo:timestamp
8416: %history{1:timestamp} = 990455579
8417: %history{2:bar} = foo
8418: %history{2:foo} = notbar
8419: %history{2:keys} = foo:bar:timestamp
8420: %history{2:timestamp} = 990455580
8421: %history{bar} = foo
8422: %history{foo} = notbar
8423: %history{timestamp} = 990455580
8424: %history{version} = 2
8425:
8426: Note that the special hash entries C<keys>, C<version> and
8427: C<timestamp> were added to the hash. C<version> will be equal to the
8428: total number of versions of the data that have been stored. The
8429: C<timestamp> attribute will be the UNIX time the hash was
8430: stored. C<keys> is available in every historical section to list which
8431: keys were added or changed at a specific historical revision of a
8432: hash.
8433:
8434: B<Warning>: do not store the hash that restore returns directly. This
8435: will cause a mess since it will restore the historical keys as if the
8436: were new keys. I.E. 1:foo will become 1:1:foo etc.
8437:
8438: Calling convention:
8439:
8440: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
8441: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
8442:
8443: For more detailed information, see lonnet specific documentation.
8444:
8445: =head1 RETURN MESSAGES
8446:
8447: =over 4
8448:
8449: =item * B<con_lost>: unable to contact remote host
8450:
8451: =item * B<con_delayed>: unable to contact remote host, message will be delivered
8452: when the connection is brought back up
8453:
8454: =item * B<con_failed>: unable to contact remote host and unable to save message
8455: for later delivery
8456:
8457: =item * B<error:>: an error a occured, a description of the error follows the :
8458:
8459: =item * B<no_such_host>: unable to fund a host associated with the user/domain
8460: that was requested
8461:
8462: =back
8463:
8464: =head1 PUBLIC SUBROUTINES
8465:
8466: =head2 Session Environment Functions
8467:
8468: =over 4
8469:
8470: =item *
8471: X<appenv()>
8472: B<appenv(%hash)>: the value of %hash is written to
8473: the user envirnoment file, and will be restored for each access this
8474: user makes during this session, also modifies the %env for the current
8475: process
8476:
8477: =item *
8478: X<delenv()>
8479: B<delenv($regexp)>: removes all items from the session
8480: environment file that matches the regular expression in $regexp. The
8481: values are also delted from the current processes %env.
8482:
8483: =item * get_env_multiple($name)
8484:
8485: gets $name from the %env hash, it seemlessly handles the cases where multiple
8486: values may be defined and end up as an array ref.
8487:
8488: returns an array of values
8489:
8490: =back
8491:
8492: =head2 User Information
8493:
8494: =over 4
8495:
8496: =item *
8497: X<queryauthenticate()>
8498: B<queryauthenticate($uname,$udom)>: try to determine user's current
8499: authentication scheme
8500:
8501: =item *
8502: X<authenticate()>
8503: B<authenticate($uname,$upass,$udom)>: try to
8504: authenticate user from domain's lib servers (first use the current
8505: one). C<$upass> should be the users password.
8506:
8507: =item *
8508: X<homeserver()>
8509: B<homeserver($uname,$udom)>: find the server which has
8510: the user's directory and files (there must be only one), this caches
8511: the answer, and also caches if there is a borken connection.
8512:
8513: =item *
8514: X<idget()>
8515: B<idget($udom,@ids)>: find the usernames behind a list of IDs
8516: (IDs are a unique resource in a domain, there must be only 1 ID per
8517: username, and only 1 username per ID in a specific domain) (returns
8518: hash: id=>name,id=>name)
8519:
8520: =item *
8521: X<idrget()>
8522: B<idrget($udom,@unames)>: find the IDs behind a list of
8523: usernames (returns hash: name=>id,name=>id)
8524:
8525: =item *
8526: X<idput()>
8527: B<idput($udom,%ids)>: store away a list of names and associated IDs
8528:
8529: =item *
8530: X<rolesinit()>
8531: B<rolesinit($udom,$username,$authhost)>: get user privileges
8532:
8533: =item *
8534: X<getsection()>
8535: B<getsection($udom,$uname,$cname)>: finds the section of student in the
8536: course $cname, return section name/number or '' for "not in course"
8537: and '-1' for "no section"
8538:
8539: =item *
8540: X<userenvironment()>
8541: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
8542: passed in @what from the requested user's environment, returns a hash
8543:
8544: =item *
8545: X<userlog_query()>
8546: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
8547: activity.log file. %filters defines filters applied when parsing the
8548: log file. These can be start or end timestamps, or the type of action
8549: - log to look for Login or Logout events, check for Checkin or
8550: Checkout, role for role selection. The response is in the form
8551: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
8552: escaped strings of the action recorded in the activity.log file.
8553:
8554: =back
8555:
8556: =head2 User Roles
8557:
8558: =over 4
8559:
8560: =item *
8561:
8562: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
8563: F: full access
8564: U,I,K: authentication modes (cxx only)
8565: '': forbidden
8566: 1: user needs to choose course
8567: 2: browse allowed
8568: A: passphrase authentication needed
8569:
8570: =item *
8571:
8572: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
8573: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
8574: and course level
8575:
8576: =item *
8577:
8578: plaintext($short) : return value in %prp hash (rolesplain.tab); plain text
8579: explanation of a user role term
8580:
8581: =item *
8582:
8583: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms) :
8584: All arguments are optional. Returns a hash of a roles, either for
8585: co-author/assistant author roles for a user's Construction Space
8586: (default), or if $context is 'userroles', roles for the user himself,
8587: In the hash, keys are set to colon-sparated $uname,$udom,and $role,
8588: and value is set to colon-separated start and end times for the role.
8589: If no username and domain are specified, will default to current
8590: user/domain. Types, roles, and roledoms are references to arrays,
8591: of role statuses (active, future or previous), roles
8592: (e.g., cc,in, st etc.) and domains of the roles which can be used
8593: to restrict the list of roles reported. If no array ref is
8594: provided for types, will default to return only active roles.
8595:
8596: =back
8597:
8598: =head2 User Modification
8599:
8600: =over 4
8601:
8602: =item *
8603:
8604: assignrole($udom,$uname,$url,$role,$end,$start) : assign role; give a role to a
8605: user for the level given by URL. Optional start and end dates (leave empty
8606: string or zero for "no date")
8607:
8608: =item *
8609:
8610: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
8611: change a users, password, possible return values are: ok,
8612: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
8613: refused
8614:
8615: =item *
8616:
8617: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
8618:
8619: =item *
8620:
8621: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene) :
8622: modify user
8623:
8624: =item *
8625:
8626: modifystudent
8627:
8628: modify a students enrollment and identification information.
8629: The course id is resolved based on the current users environment.
8630: This means the envoking user must be a course coordinator or otherwise
8631: associated with a course.
8632:
8633: This call is essentially a wrapper for lonnet::modifyuser and
8634: lonnet::modify_student_enrollment
8635:
8636: Inputs:
8637:
8638: =over 4
8639:
8640: =item B<$udom> Students loncapa domain
8641:
8642: =item B<$uname> Students loncapa login name
8643:
8644: =item B<$uid> Students id/student number
8645:
8646: =item B<$umode> Students authentication mode
8647:
8648: =item B<$upass> Students password
8649:
8650: =item B<$first> Students first name
8651:
8652: =item B<$middle> Students middle name
8653:
8654: =item B<$last> Students last name
8655:
8656: =item B<$gene> Students generation
8657:
8658: =item B<$usec> Students section in course
8659:
8660: =item B<$end> Unix time of the roles expiration
8661:
8662: =item B<$start> Unix time of the roles start date
8663:
8664: =item B<$forceid> If defined, allow $uid to be changed
8665:
8666: =item B<$desiredhome> server to use as home server for student
8667:
8668: =back
8669:
8670: =item *
8671:
8672: modify_student_enrollment
8673:
8674: Change a students enrollment status in a class. The environment variable
8675: 'role.request.course' must be defined for this function to proceed.
8676:
8677: Inputs:
8678:
8679: =over 4
8680:
8681: =item $udom, students domain
8682:
8683: =item $uname, students name
8684:
8685: =item $uid, students user id
8686:
8687: =item $first, students first name
8688:
8689: =item $middle
8690:
8691: =item $last
8692:
8693: =item $gene
8694:
8695: =item $usec
8696:
8697: =item $end
8698:
8699: =item $start
8700:
8701: =back
8702:
8703:
8704: =item *
8705:
8706: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
8707: custom role; give a custom role to a user for the level given by URL. Specify
8708: name and domain of role author, and role name
8709:
8710: =item *
8711:
8712: revokerole($udom,$uname,$url,$role) : revoke a role for url
8713:
8714: =item *
8715:
8716: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
8717:
8718: =back
8719:
8720: =head2 Course Infomation
8721:
8722: =over 4
8723:
8724: =item *
8725:
8726: coursedescription($courseid) : returns a hash of information about the
8727: specified course id, including all environment settings for the
8728: course, the description of the course will be in the hash under the
8729: key 'description'
8730:
8731: =item *
8732:
8733: resdata($name,$domain,$type,@which) : request for current parameter
8734: setting for a specific $type, where $type is either 'course' or 'user',
8735: @what should be a list of parameters to ask about. This routine caches
8736: answers for 5 minutes.
8737:
8738: =item *
8739:
8740: get_courseresdata($courseid, $domain) : dump the entire course resource
8741: data base, returning a hash that is keyed by the resource name and has
8742: values that are the resource value. I believe that the timestamps and
8743: versions are also returned.
8744:
8745:
8746: =back
8747:
8748: =head2 Course Modification
8749:
8750: =over 4
8751:
8752: =item *
8753:
8754: writecoursepref($courseid,%prefs) : write preferences (environment
8755: database) for a course
8756:
8757: =item *
8758:
8759: createcourse($udom,$description,$url) : make/modify course
8760:
8761: =back
8762:
8763: =head2 Resource Subroutines
8764:
8765: =over 4
8766:
8767: =item *
8768:
8769: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
8770:
8771: =item *
8772:
8773: repcopy($filename) : subscribes to the requested file, and attempts to
8774: replicate from the owning library server, Might return
8775: 'unavailable', 'not_found', 'forbidden', 'ok', or
8776: 'bad_request', also attempts to grab the metadata for the
8777: resource. Expects the local filesystem pathname
8778: (/home/httpd/html/res/....)
8779:
8780: =back
8781:
8782: =head2 Resource Information
8783:
8784: =over 4
8785:
8786: =item *
8787:
8788: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
8789: a vairety of different possible values, $varname should be a request
8790: string, and the other parameters can be used to specify who and what
8791: one is asking about.
8792:
8793: Possible values for $varname are environment.lastname (or other item
8794: from the envirnment hash), user.name (or someother aspect about the
8795: user), resource.0.maxtries (or some other part and parameter of a
8796: resource)
8797:
8798: =item *
8799:
8800: directcondval($number) : get current value of a condition; reads from a state
8801: string
8802:
8803: =item *
8804:
8805: condval($condidx) : value of condition index based on state
8806:
8807: =item *
8808:
8809: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
8810: resource's metadata, $what should be either a specific key, or either
8811: 'keys' (to get a list of possible keys) or 'packages' to get a list of
8812: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
8813:
8814: this function automatically caches all requests
8815:
8816: =item *
8817:
8818: metadata_query($query,$custom,$customshow) : make a metadata query against the
8819: network of library servers; returns file handle of where SQL and regex results
8820: will be stored for query
8821:
8822: =item *
8823:
8824: symbread($filename) : return symbolic list entry (filename argument optional);
8825: returns the data handle
8826:
8827: =item *
8828:
8829: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
8830: a possible symb for the URL in $thisfn, and if is an encryypted
8831: resource that the user accessed using /enc/ returns a 1 on success, 0
8832: on failure, user must be in a course, as it assumes the existance of
8833: the course initial hash, and uses $env('request.course.id'}
8834:
8835:
8836: =item *
8837:
8838: symbclean($symb) : removes versions numbers from a symb, returns the
8839: cleaned symb
8840:
8841: =item *
8842:
8843: is_on_map($uri) : checks if the $uri is somewhere on the current
8844: course map, user must be in a course for it to work.
8845:
8846: =item *
8847:
8848: numval($salt) : return random seed value (addend for rndseed)
8849:
8850: =item *
8851:
8852: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
8853: a random seed, all arguments are optional, if they aren't sent it uses the
8854: environment to derive them. Note: if symb isn't sent and it can't get one
8855: from &symbread it will use the current time as its return value
8856:
8857: =item *
8858:
8859: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
8860: unfakeable, receipt
8861:
8862: =item *
8863:
8864: receipt() : API to ireceipt working off of env values; given out to users
8865:
8866: =item *
8867:
8868: countacc($url) : count the number of accesses to a given URL
8869:
8870: =item *
8871:
8872: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
8873:
8874: =item *
8875:
8876: checkin($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 $tcrsid)
8877:
8878: =item *
8879:
8880: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
8881:
8882: =item *
8883:
8884: devalidate($symb) : devalidate temporary spreadsheet calculations,
8885: forcing spreadsheet to reevaluate the resource scores next time.
8886:
8887: =back
8888:
8889: =head2 Storing/Retreiving Data
8890:
8891: =over 4
8892:
8893: =item *
8894:
8895: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
8896: for this url; hashref needs to be given and should be a \%hashname; the
8897: remaining args aren't required and if they aren't passed or are '' they will
8898: be derived from the env
8899:
8900: =item *
8901:
8902: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
8903: uses critical subroutine
8904:
8905: =item *
8906:
8907: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
8908: all args are optional
8909:
8910: =item *
8911:
8912: dumpstore($namespace,$udom,$uname,$regexp,$range) :
8913: dumps the complete (or key matching regexp) namespace into a hash
8914: ($udom, $uname, $regexp, $range are optional) for a namespace that is
8915: normally &store()ed into
8916:
8917: $range should be either an integer '100' (give me the first 100
8918: matching records)
8919: or be two integers sperated by a - with no spaces
8920: '30-50' (give me the 30th through the 50th matching
8921: records)
8922:
8923:
8924: =item *
8925:
8926: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
8927: replaces a &store() version of data with a replacement set of data
8928: for a particular resource in a namespace passed in the $storehash hash
8929: reference
8930:
8931: =item *
8932:
8933: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
8934: works very similar to store/cstore, but all data is stored in a
8935: temporary location and can be reset using tmpreset, $storehash should
8936: be a hash reference, returns nothing on success
8937:
8938: =item *
8939:
8940: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
8941: similar to restore, but all data is stored in a temporary location and
8942: can be reset using tmpreset. Returns a hash of values on success,
8943: error string otherwise.
8944:
8945: =item *
8946:
8947: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
8948: deltes all keys for $symb form the temporary storage hash.
8949:
8950: =item *
8951:
8952: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
8953: reference filled in from namesp ($udom and $uname are optional)
8954:
8955: =item *
8956:
8957: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
8958: namesp ($udom and $uname are optional)
8959:
8960: =item *
8961:
8962: dump($namespace,$udom,$uname,$regexp,$range) :
8963: dumps the complete (or key matching regexp) namespace into a hash
8964: ($udom, $uname, $regexp, $range are optional)
8965:
8966: $range should be either an integer '100' (give me the first 100
8967: matching records)
8968: or be two integers sperated by a - with no spaces
8969: '30-50' (give me the 30th through the 50th matching
8970: records)
8971: =item *
8972:
8973: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
8974: $store can be a scalar, an array reference, or if the amount to be
8975: incremented is > 1, a hash reference.
8976:
8977: ($udom and $uname are optional)
8978:
8979: =item *
8980:
8981: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
8982: ($udom and $uname are optional)
8983:
8984: =item *
8985:
8986: cput($namespace,$storehash,$udom,$uname) : critical put
8987: ($udom and $uname are optional)
8988:
8989: =item *
8990:
8991: newput($namespace,$storehash,$udom,$uname) :
8992:
8993: Attempts to store the items in the $storehash, but only if they don't
8994: currently exist, if this succeeds you can be certain that you have
8995: successfully created a new key value pair in the $namespace db.
8996:
8997:
8998: Args:
8999: $namespace: name of database to store values to
9000: $storehash: hashref to store to the db
9001: $udom: (optional) domain of user containing the db
9002: $uname: (optional) name of user caontaining the db
9003:
9004: Returns:
9005: 'ok' -> succeeded in storing all keys of $storehash
9006: 'key_exists: <key>' -> failed to anything out of $storehash, as at
9007: least <key> already existed in the db (other
9008: requested keys may also already exist)
9009: 'error: <msg>' -> unable to tie the DB or other erorr occured
9010: 'con_lost' -> unable to contact request server
9011: 'refused' -> action was not allowed by remote machine
9012:
9013:
9014: =item *
9015:
9016: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
9017: reference filled in from namesp (encrypts the return communication)
9018: ($udom and $uname are optional)
9019:
9020: =item *
9021:
9022: log($udom,$name,$home,$message) : write to permanent log for user; use
9023: critical subroutine
9024:
9025: =item *
9026:
9027: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
9028: array reference filled in from namespace found in domain level on either
9029: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
9030:
9031: =item *
9032:
9033: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
9034: domain level either on specified domain server ($uhome) or primary domain
9035: server ($udom and $uhome are optional)
9036:
9037: =back
9038:
9039: =head2 Network Status Functions
9040:
9041: =over 4
9042:
9043: =item *
9044:
9045: dirlist($uri) : return directory list based on URI
9046:
9047: =item *
9048:
9049: spareserver() : find server with least workload from spare.tab
9050:
9051: =back
9052:
9053: =head2 Apache Request
9054:
9055: =over 4
9056:
9057: =item *
9058:
9059: ssi($url,%hash) : server side include, does a complete request cycle on url to
9060: localhost, posts hash
9061:
9062: =back
9063:
9064: =head2 Data to String to Data
9065:
9066: =over 4
9067:
9068: =item *
9069:
9070: hash2str(%hash) : convert a hash into a string complete with escaping and '='
9071: and '&' separators, supports elements that are arrayrefs and hashrefs
9072:
9073: =item *
9074:
9075: hashref2str($hashref) : convert a hashref into a string complete with
9076: escaping and '=' and '&' separators, supports elements that are
9077: arrayrefs and hashrefs
9078:
9079: =item *
9080:
9081: arrayref2str($arrayref) : convert an arrayref into a string complete
9082: with escaping and '&' separators, supports elements that are arrayrefs
9083: and hashrefs
9084:
9085: =item *
9086:
9087: str2hash($string) : convert string to hash using unescaping and
9088: splitting on '=' and '&', supports elements that are arrayrefs and
9089: hashrefs
9090:
9091: =item *
9092:
9093: str2array($string) : convert string to hash using unescaping and
9094: splitting on '&', supports elements that are arrayrefs and hashrefs
9095:
9096: =back
9097:
9098: =head2 Logging Routines
9099:
9100: =over 4
9101:
9102: These routines allow one to make log messages in the lonnet.log and
9103: lonnet.perm logfiles.
9104:
9105: =item *
9106:
9107: logtouch() : make sure the logfile, lonnet.log, exists
9108:
9109: =item *
9110:
9111: logthis() : append message to the normal lonnet.log file, it gets
9112: preiodically rolled over and deleted.
9113:
9114: =item *
9115:
9116: logperm() : append a permanent message to lonnet.perm.log, this log
9117: file never gets deleted by any automated portion of the system, only
9118: messages of critical importance should go in here.
9119:
9120: =back
9121:
9122: =head2 General File Helper Routines
9123:
9124: =over 4
9125:
9126: =item *
9127:
9128: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
9129: (a) files in /uploaded
9130: (i) If a local copy of the file exists -
9131: compares modification date of local copy with last-modified date for
9132: definitive version stored on home server for course. If local copy is
9133: stale, requests a new version from the home server and stores it.
9134: If the original has been removed from the home server, then local copy
9135: is unlinked.
9136: (ii) If local copy does not exist -
9137: requests the file from the home server and stores it.
9138:
9139: If $caller is 'uploadrep':
9140: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
9141: for request for files originally uploaded via DOCS.
9142: - returns 'ok' if fresh local copy now available, -1 otherwise.
9143:
9144: Otherwise:
9145: This indicates a call from the content generation phase of the request.
9146: - returns the entire contents of the file or -1.
9147:
9148: (b) files in /res
9149: - returns the entire contents of a file or -1;
9150: it properly subscribes to and replicates the file if neccessary.
9151:
9152:
9153: =item *
9154:
9155: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
9156: reference
9157:
9158: returns either a stat() list of data about the file or an empty list
9159: if the file doesn't exist or couldn't find out about it (connection
9160: problems or user unknown)
9161:
9162: =item *
9163:
9164: filelocation($dir,$file) : returns file system location of a file
9165: based on URI; meant to be "fairly clean" absolute reference, $dir is a
9166: directory that relative $file lookups are to looked in ($dir of /a/dir
9167: and a file of ../bob will become /a/bob)
9168:
9169: =item *
9170:
9171: hreflocation($dir,$file) : returns file system location or a URL; same as
9172: filelocation except for hrefs
9173:
9174: =item *
9175:
9176: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
9177:
9178: =back
9179:
9180: =head2 Usererfile file routines (/uploaded*)
9181:
9182: =over 4
9183:
9184: =item *
9185:
9186: userfileupload(): main rotine for putting a file in a user or course's
9187: filespace, arguments are,
9188:
9189: formname - required - this is the name of the element in $env where the
9190: filename, and the contents of the file to create/modifed exist
9191: the filename is in $env{'form.'.$formname.'.filename'} and the
9192: contents of the file is located in $env{'form.'.$formname}
9193: coursedoc - if true, store the file in the course of the active role
9194: of the current user
9195: subdir - required - subdirectory to put the file in under ../userfiles/
9196: if undefined, it will be placed in "unknown"
9197:
9198: (This routine calls clean_filename() to remove any dangerous
9199: characters from the filename, and then calls finuserfileupload() to
9200: complete the transaction)
9201:
9202: returns either the url of the uploaded file (/uploaded/....) if successful
9203: and /adm/notfound.html if unsuccessful
9204:
9205: =item *
9206:
9207: clean_filename(): routine for cleaing a filename up for storage in
9208: userfile space, argument is:
9209:
9210: filename - proposed filename
9211:
9212: returns: the new clean filename
9213:
9214: =item *
9215:
9216: finishuserfileupload(): routine that creaes and sends the file to
9217: userspace, probably shouldn't be called directly
9218:
9219: docuname: username or courseid of destination for the file
9220: docudom: domain of user/course of destination for the file
9221: formname: same as for userfileupload()
9222: fname: filename (inculding subdirectories) for the file
9223:
9224: returns either the url of the uploaded file (/uploaded/....) if successful
9225: and /adm/notfound.html if unsuccessful
9226:
9227: =item *
9228:
9229: renameuserfile(): renames an existing userfile to a new name
9230:
9231: Args:
9232: docuname: username or courseid of destination for the file
9233: docudom: domain of user/course of destination for the file
9234: old: current file name (including any subdirs under userfiles)
9235: new: desired file name (including any subdirs under userfiles)
9236:
9237: =item *
9238:
9239: mkdiruserfile(): creates a directory is a userfiles dir
9240:
9241: Args:
9242: docuname: username or courseid of destination for the file
9243: docudom: domain of user/course of destination for the file
9244: dir: dir to create (including any subdirs under userfiles)
9245:
9246: =item *
9247:
9248: removeuserfile(): removes a file that exists in userfiles
9249:
9250: Args:
9251: docuname: username or courseid of destination for the file
9252: docudom: domain of user/course of destination for the file
9253: fname: filname to delete (including any subdirs under userfiles)
9254:
9255: =item *
9256:
9257: removeuploadedurl(): convience function for removeuserfile()
9258:
9259: Args:
9260: url: a full /uploaded/... url to delete
9261:
9262: =item *
9263:
9264: get_portfile_permissions():
9265: Args:
9266: domain: domain of user or course contain the portfolio files
9267: user: name of user or num of course contain the portfolio files
9268: Returns:
9269: hashref of a dump of the proper file_permissions.db
9270:
9271:
9272: =item *
9273:
9274: get_access_controls():
9275:
9276: Args:
9277: current_permissions: the hash ref returned from get_portfile_permissions()
9278: group: (optional) the group you want the files associated with
9279: file: (optional) the file you want access info on
9280:
9281: Returns:
9282: a hash (keys are file names) of hashes containing
9283: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
9284: values are XML containing access control settings (see below)
9285:
9286: Internal notes:
9287:
9288: access controls are stored in file_permissions.db as key=value pairs.
9289: key -> path to file/file_name\0uniqueID:scope_end_start
9290: where scope -> public,guest,course,group,domains or users.
9291: end -> UNIX time for end of access (0 -> no end date)
9292: start -> UNIX time for start of access
9293:
9294: value -> XML description of access control
9295: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
9296: <start></start>
9297: <end></end>
9298:
9299: <password></password> for scope type = guest
9300:
9301: <domain></domain> for scope type = course or group
9302: <number></number>
9303: <roles id="">
9304: <role></role>
9305: <access></access>
9306: <section></section>
9307: <group></group>
9308: </roles>
9309:
9310: <dom></dom> for scope type = domains
9311:
9312: <users> for scope type = users
9313: <user>
9314: <uname></uname>
9315: <udom></udom>
9316: </user>
9317: </users>
9318: </scope>
9319:
9320: Access data is also aggregated for each file in an additional key=value pair:
9321: key -> path to file/file_name\0accesscontrol
9322: value -> reference to hash
9323: hash contains key = value pairs
9324: where key = uniqueID:scope_end_start
9325: value = UNIX time record was last updated
9326:
9327: Used to improve speed of look-ups of access controls for each file.
9328:
9329: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
9330:
9331: modify_access_controls():
9332:
9333: Modifies access controls for a portfolio file
9334: Args
9335: 1. file name
9336: 2. reference to hash of required changes,
9337: 3. domain
9338: 4. username
9339: where domain,username are the domain of the portfolio owner
9340: (either a user or a course)
9341:
9342: Returns:
9343: 1. result of additions or updates ('ok' or 'error', with error message).
9344: 2. result of deletions ('ok' or 'error', with error message).
9345: 3. reference to hash of any new or updated access controls.
9346: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
9347: key = integer (inbound ID)
9348: value = uniqueID
9349:
9350: =back
9351:
9352: =head2 HTTP Helper Routines
9353:
9354: =over 4
9355:
9356: =item *
9357:
9358: escape() : unpack non-word characters into CGI-compatible hex codes
9359:
9360: =item *
9361:
9362: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
9363:
9364: =back
9365:
9366: =head1 PRIVATE SUBROUTINES
9367:
9368: =head2 Underlying communication routines (Shouldn't call)
9369:
9370: =over 4
9371:
9372: =item *
9373:
9374: subreply() : tries to pass a message to lonc, returns con_lost if incapable
9375:
9376: =item *
9377:
9378: reply() : uses subreply to send a message to remote machine, logs all failures
9379:
9380: =item *
9381:
9382: critical() : passes a critical message to another server; if cannot
9383: get through then place message in connection buffer directory and
9384: returns con_delayed, if incapable of saving message, returns
9385: con_failed
9386:
9387: =item *
9388:
9389: reconlonc() : tries to reconnect lonc client processes.
9390:
9391: =back
9392:
9393: =head2 Resource Access Logging
9394:
9395: =over 4
9396:
9397: =item *
9398:
9399: flushcourselogs() : flush (save) buffer logs and access logs
9400:
9401: =item *
9402:
9403: courselog($what) : save message for course in hash
9404:
9405: =item *
9406:
9407: courseacclog($what) : save message for course using &courselog(). Perform
9408: special processing for specific resource types (problems, exams, quizzes, etc).
9409:
9410: =item *
9411:
9412: goodbye() : flush course logs and log shutting down; it is called in srm.conf
9413: as a PerlChildExitHandler
9414:
9415: =back
9416:
9417: =head2 Other
9418:
9419: =over 4
9420:
9421: =item *
9422:
9423: symblist($mapname,%newhash) : update symbolic storage links
9424:
9425: =back
9426:
9427: =cut
9428:
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