File:
[LON-CAPA] /
loncom /
lonnet /
perl /
lonnet.pm
Revision
1.909:
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Fri Aug 31 12:33:29 2007 UTC (16 years, 10 months ago) by
raeburn
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MAIN
CVS tags:
HEAD
Institutional directory search now reported as unavailable in the case where a DC has enabled directory searching via "Modify domain configuration" but either:
(a) localenroll::get_userinfo() has not been customized, or
(b) an error ioccurred when querying the institutional directory.
lonsql
- &do_inst_dir_search() returns 'unavailable' if the response from localenroll::get_userinfo() is not 'ok'
lonnet.pm
- &inst_directory_query() now returns a scalar and a hash.
- scalar is the outcome of the query: 'unavailable', 'ok' or ''.
- hash contains the search results (if any matches)
loncreateuser.pm
- Report to user that institutional directory search is unavailable if response from &lonnet::inst_directory_query() is not 'ok'.
localenroll.pm
- documentation updated
- &get_userinfo() returns 'unavailable' by default
1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.909 2007/08/31 12:33:29 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).':'.&escape($dom).':'.
910: &escape($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 = split(/&/,$reply);
928: foreach my $match (@matches) {
929: my @items = split(/:/,$match);
930: my ($uname,$udom,%userhash);
931: foreach my $entry (@items) {
932: my ($key,$value) = split(/=/,$entry);
933: $key = &unescape($key);
934: $value = &unescape($value);
935: $userhash{$key} = $value;
936: if ($key eq 'username') {
937: $uname = $value;
938: } elsif ($key eq 'domain') {
939: $udom = $value;
940: }
941: }
942: $results{$uname.':'.$udom} = \%userhash;
943: }
944: }
945: }
946: }
947: return %results;
948: }
949:
950: # --------------------------------------------------- Assign a key to a student
951:
952: sub assign_access_key {
953: #
954: # a valid key looks like uname:udom#comments
955: # comments are being appended
956: #
957: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
958: $kdom=
959: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
960: $knum=
961: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
962: $cdom=
963: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
964: $cnum=
965: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
966: $udom=$env{'user.name'} unless (defined($udom));
967: $uname=$env{'user.domain'} unless (defined($uname));
968: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
969: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
970: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
971: # assigned to this person
972: # - this should not happen,
973: # unless something went wrong
974: # the first time around
975: # ready to assign
976: $logentry=$1.'; '.$logentry;
977: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
978: $kdom,$knum) eq 'ok') {
979: # key now belongs to user
980: my $envkey='key.'.$cdom.'_'.$cnum;
981: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
982: &appenv('environment.'.$envkey => $ckey);
983: return 'ok';
984: } else {
985: return
986: 'error: Count not permanently assign key, will need to be re-entered later.';
987: }
988: } else {
989: return 'error: Could not assign key, try again later.';
990: }
991: } elsif (!$existing{$ckey}) {
992: # the key does not exist
993: return 'error: The key does not exist';
994: } else {
995: # the key is somebody else's
996: return 'error: The key is already in use';
997: }
998: }
999:
1000: # ------------------------------------------ put an additional comment on a key
1001:
1002: sub comment_access_key {
1003: #
1004: # a valid key looks like uname:udom#comments
1005: # comments are being appended
1006: #
1007: my ($ckey,$cdom,$cnum,$logentry)=@_;
1008: $cdom=
1009: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1010: $cnum=
1011: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1012: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1013: if ($existing{$ckey}) {
1014: $existing{$ckey}.='; '.$logentry;
1015: # ready to assign
1016: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
1017: $cdom,$cnum) eq 'ok') {
1018: return 'ok';
1019: } else {
1020: return 'error: Count not store comment.';
1021: }
1022: } else {
1023: # the key does not exist
1024: return 'error: The key does not exist';
1025: }
1026: }
1027:
1028: # ------------------------------------------------------ Generate a set of keys
1029:
1030: sub generate_access_keys {
1031: my ($number,$cdom,$cnum,$logentry)=@_;
1032: $cdom=
1033: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1034: $cnum=
1035: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1036: unless (&allowed('mky',$cdom)) { return 0; }
1037: unless (($cdom) && ($cnum)) { return 0; }
1038: if ($number>10000) { return 0; }
1039: sleep(2); # make sure don't get same seed twice
1040: srand(time()^($$+($$<<15))); # from "Programming Perl"
1041: my $total=0;
1042: for (my $i=1;$i<=$number;$i++) {
1043: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
1044: sprintf("%lx",int(100000*rand)).'-'.
1045: sprintf("%lx",int(100000*rand));
1046: $newkey=~s/1/g/g; # folks mix up 1 and l
1047: $newkey=~s/0/h/g; # and also 0 and O
1048: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
1049: if ($existing{$newkey}) {
1050: $i--;
1051: } else {
1052: if (&put('accesskeys',
1053: { $newkey => '# generated '.localtime().
1054: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
1055: '; '.$logentry },
1056: $cdom,$cnum) eq 'ok') {
1057: $total++;
1058: }
1059: }
1060: }
1061: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
1062: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
1063: return $total;
1064: }
1065:
1066: # ------------------------------------------------------- Validate an accesskey
1067:
1068: sub validate_access_key {
1069: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
1070: $cdom=
1071: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1072: $cnum=
1073: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1074: $udom=$env{'user.domain'} unless (defined($udom));
1075: $uname=$env{'user.name'} unless (defined($uname));
1076: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1077: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
1078: }
1079:
1080: # ------------------------------------- Find the section of student in a course
1081: sub devalidate_getsection_cache {
1082: my ($udom,$unam,$courseid)=@_;
1083: my $hashid="$udom:$unam:$courseid";
1084: &devalidate_cache_new('getsection',$hashid);
1085: }
1086:
1087: sub courseid_to_courseurl {
1088: my ($courseid) = @_;
1089: #already url style courseid
1090: return $courseid if ($courseid =~ m{^/});
1091:
1092: if (exists($env{'course.'.$courseid.'.num'})) {
1093: my $cnum = $env{'course.'.$courseid.'.num'};
1094: my $cdom = $env{'course.'.$courseid.'.domain'};
1095: return "/$cdom/$cnum";
1096: }
1097:
1098: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
1099: if (exists($courseinfo{'num'})) {
1100: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
1101: }
1102:
1103: return undef;
1104: }
1105:
1106: sub getsection {
1107: my ($udom,$unam,$courseid)=@_;
1108: my $cachetime=1800;
1109:
1110: my $hashid="$udom:$unam:$courseid";
1111: my ($result,$cached)=&is_cached_new('getsection',$hashid);
1112: if (defined($cached)) { return $result; }
1113:
1114: my %Pending;
1115: my %Expired;
1116: #
1117: # Each role can either have not started yet (pending), be active,
1118: # or have expired.
1119: #
1120: # If there is an active role, we are done.
1121: #
1122: # If there is more than one role which has not started yet,
1123: # choose the one which will start sooner
1124: # If there is one role which has not started yet, return it.
1125: #
1126: # If there is more than one expired role, choose the one which ended last.
1127: # If there is a role which has expired, return it.
1128: #
1129: $courseid = &courseid_to_courseurl($courseid);
1130: my %roleshash = &dump('roles',$udom,$unam,$courseid);
1131: foreach my $key (keys(%roleshash)) {
1132: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
1133: my $section=$1;
1134: if ($key eq $courseid.'_st') { $section=''; }
1135: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
1136: my $now=time;
1137: if (defined($end) && $end && ($now > $end)) {
1138: $Expired{$end}=$section;
1139: next;
1140: }
1141: if (defined($start) && $start && ($now < $start)) {
1142: $Pending{$start}=$section;
1143: next;
1144: }
1145: return &do_cache_new('getsection',$hashid,$section,$cachetime);
1146: }
1147: #
1148: # Presumedly there will be few matching roles from the above
1149: # loop and the sorting time will be negligible.
1150: if (scalar(keys(%Pending))) {
1151: my ($time) = sort {$a <=> $b} keys(%Pending);
1152: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
1153: }
1154: if (scalar(keys(%Expired))) {
1155: my @sorted = sort {$a <=> $b} keys(%Expired);
1156: my $time = pop(@sorted);
1157: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
1158: }
1159: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
1160: }
1161:
1162: sub save_cache {
1163: &purge_remembered();
1164: #&Apache::loncommon::validate_page();
1165: undef(%env);
1166: undef($env_loaded);
1167: }
1168:
1169: my $to_remember=-1;
1170: my %remembered;
1171: my %accessed;
1172: my $kicks=0;
1173: my $hits=0;
1174: sub make_key {
1175: my ($name,$id) = @_;
1176: if (length($id) > 65
1177: && length(&escape($id)) > 200) {
1178: $id=length($id).':'.&Digest::MD5::md5_hex($id);
1179: }
1180: return &escape($name.':'.$id);
1181: }
1182:
1183: sub devalidate_cache_new {
1184: my ($name,$id,$debug) = @_;
1185: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
1186: $id=&make_key($name,$id);
1187: $memcache->delete($id);
1188: delete($remembered{$id});
1189: delete($accessed{$id});
1190: }
1191:
1192: sub is_cached_new {
1193: my ($name,$id,$debug) = @_;
1194: $id=&make_key($name,$id);
1195: if (exists($remembered{$id})) {
1196: if ($debug) { &Apache::lonnet::logthis("Earyl return $id of $remembered{$id} "); }
1197: $accessed{$id}=[&gettimeofday()];
1198: $hits++;
1199: return ($remembered{$id},1);
1200: }
1201: my $value = $memcache->get($id);
1202: if (!(defined($value))) {
1203: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
1204: return (undef,undef);
1205: }
1206: if ($value eq '__undef__') {
1207: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
1208: $value=undef;
1209: }
1210: &make_room($id,$value,$debug);
1211: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
1212: return ($value,1);
1213: }
1214:
1215: sub do_cache_new {
1216: my ($name,$id,$value,$time,$debug) = @_;
1217: $id=&make_key($name,$id);
1218: my $setvalue=$value;
1219: if (!defined($setvalue)) {
1220: $setvalue='__undef__';
1221: }
1222: if (!defined($time) ) {
1223: $time=600;
1224: }
1225: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
1226: if (!($memcache->set($id,$setvalue,$time))) {
1227: &logthis("caching of id -> $id failed");
1228: }
1229: # need to make a copy of $value
1230: #&make_room($id,$value,$debug);
1231: return $value;
1232: }
1233:
1234: sub make_room {
1235: my ($id,$value,$debug)=@_;
1236: $remembered{$id}=$value;
1237: if ($to_remember<0) { return; }
1238: $accessed{$id}=[&gettimeofday()];
1239: if (scalar(keys(%remembered)) <= $to_remember) { return; }
1240: my $to_kick;
1241: my $max_time=0;
1242: foreach my $other (keys(%accessed)) {
1243: if (&tv_interval($accessed{$other}) > $max_time) {
1244: $to_kick=$other;
1245: $max_time=&tv_interval($accessed{$other});
1246: }
1247: }
1248: delete($remembered{$to_kick});
1249: delete($accessed{$to_kick});
1250: $kicks++;
1251: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
1252: return;
1253: }
1254:
1255: sub purge_remembered {
1256: #&logthis("Tossing ".scalar(keys(%remembered)));
1257: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
1258: undef(%remembered);
1259: undef(%accessed);
1260: }
1261: # ------------------------------------- Read an entry from a user's environment
1262:
1263: sub userenvironment {
1264: my ($udom,$unam,@what)=@_;
1265: my %returnhash=();
1266: my @answer=split(/\&/,
1267: &reply('get:'.$udom.':'.$unam.':environment:'.join('&',@what),
1268: &homeserver($unam,$udom)));
1269: my $i;
1270: for ($i=0;$i<=$#what;$i++) {
1271: $returnhash{$what[$i]}=&unescape($answer[$i]);
1272: }
1273: return %returnhash;
1274: }
1275:
1276: # ---------------------------------------------------------- Get a studentphoto
1277: sub studentphoto {
1278: my ($udom,$unam,$ext) = @_;
1279: my $home=&Apache::lonnet::homeserver($unam,$udom);
1280: if (defined($env{'request.course.id'})) {
1281: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
1282: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
1283: return(&retrievestudentphoto($udom,$unam,$ext));
1284: } else {
1285: my ($result,$perm_reqd)=
1286: &Apache::lonnet::auto_photo_permission($unam,$udom);
1287: if ($result eq 'ok') {
1288: if (!($perm_reqd eq 'yes')) {
1289: return(&retrievestudentphoto($udom,$unam,$ext));
1290: }
1291: }
1292: }
1293: }
1294: } else {
1295: my ($result,$perm_reqd) =
1296: &Apache::lonnet::auto_photo_permission($unam,$udom);
1297: if ($result eq 'ok') {
1298: if (!($perm_reqd eq 'yes')) {
1299: return(&retrievestudentphoto($udom,$unam,$ext));
1300: }
1301: }
1302: }
1303: return '/adm/lonKaputt/lonlogo_broken.gif';
1304: }
1305:
1306: sub retrievestudentphoto {
1307: my ($udom,$unam,$ext,$type) = @_;
1308: my $home=&Apache::lonnet::homeserver($unam,$udom);
1309: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
1310: if ($ret eq 'ok') {
1311: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
1312: if ($type eq 'thumbnail') {
1313: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
1314: }
1315: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
1316: return $tokenurl;
1317: } else {
1318: if ($type eq 'thumbnail') {
1319: return '/adm/lonKaputt/genericstudent_tn.gif';
1320: } else {
1321: return '/adm/lonKaputt/lonlogo_broken.gif';
1322: }
1323: }
1324: }
1325:
1326: # -------------------------------------------------------------------- New chat
1327:
1328: sub chatsend {
1329: my ($newentry,$anon,$group)=@_;
1330: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1331: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1332: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
1333: &reply('chatsend:'.$cdom.':'.$cnum.':'.
1334: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
1335: &escape($newentry)).':'.$group,$chome);
1336: }
1337:
1338: # ------------------------------------------ Find current version of a resource
1339:
1340: sub getversion {
1341: my $fname=&clutter(shift);
1342: unless ($fname=~/^\/res\//) { return -1; }
1343: return ¤tversion(&filelocation('',$fname));
1344: }
1345:
1346: sub currentversion {
1347: my $fname=shift;
1348: my ($result,$cached)=&is_cached_new('resversion',$fname);
1349: if (defined($cached)) { return $result; }
1350: my $author=$fname;
1351: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1352: my ($udom,$uname)=split(/\//,$author);
1353: my $home=homeserver($uname,$udom);
1354: if ($home eq 'no_host') {
1355: return -1;
1356: }
1357: my $answer=reply("currentversion:$fname",$home);
1358: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1359: return -1;
1360: }
1361: return &do_cache_new('resversion',$fname,$answer,600);
1362: }
1363:
1364: # ----------------------------- Subscribe to a resource, return URL if possible
1365:
1366: sub subscribe {
1367: my $fname=shift;
1368: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
1369: $fname=~s/[\n\r]//g;
1370: my $author=$fname;
1371: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1372: my ($udom,$uname)=split(/\//,$author);
1373: my $home=homeserver($uname,$udom);
1374: if ($home eq 'no_host') {
1375: return 'not_found';
1376: }
1377: my $answer=reply("sub:$fname",$home);
1378: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1379: $answer.=' by '.$home;
1380: }
1381: return $answer;
1382: }
1383:
1384: # -------------------------------------------------------------- Replicate file
1385:
1386: sub repcopy {
1387: my $filename=shift;
1388: $filename=~s/\/+/\//g;
1389: if ($filename=~m|^/home/httpd/html/adm/|) { return 'ok'; }
1390: if ($filename=~m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
1391: if ($filename=~m|^/home/httpd/html/userfiles/| or
1392: $filename=~m -^/*(uploaded|editupload)/-) {
1393: return &repcopy_userfile($filename);
1394: }
1395: $filename=~s/[\n\r]//g;
1396: my $transname="$filename.in.transfer";
1397: # FIXME: this should flock
1398: if ((-e $filename) || (-e $transname)) { return 'ok'; }
1399: my $remoteurl=subscribe($filename);
1400: if ($remoteurl =~ /^con_lost by/) {
1401: &logthis("Subscribe returned $remoteurl: $filename");
1402: return 'unavailable';
1403: } elsif ($remoteurl eq 'not_found') {
1404: #&logthis("Subscribe returned not_found: $filename");
1405: return 'not_found';
1406: } elsif ($remoteurl =~ /^rejected by/) {
1407: &logthis("Subscribe returned $remoteurl: $filename");
1408: return 'forbidden';
1409: } elsif ($remoteurl eq 'directory') {
1410: return 'ok';
1411: } else {
1412: my $author=$filename;
1413: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1414: my ($udom,$uname)=split(/\//,$author);
1415: my $home=homeserver($uname,$udom);
1416: unless ($home eq $perlvar{'lonHostID'}) {
1417: my @parts=split(/\//,$filename);
1418: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
1419: if ($path ne "$perlvar{'lonDocRoot'}/res") {
1420: &logthis("Malconfiguration for replication: $filename");
1421: return 'bad_request';
1422: }
1423: my $count;
1424: for ($count=5;$count<$#parts;$count++) {
1425: $path.="/$parts[$count]";
1426: if ((-e $path)!=1) {
1427: mkdir($path,0777);
1428: }
1429: }
1430: my $ua=new LWP::UserAgent;
1431: my $request=new HTTP::Request('GET',"$remoteurl");
1432: my $response=$ua->request($request,$transname);
1433: if ($response->is_error()) {
1434: unlink($transname);
1435: my $message=$response->status_line;
1436: &logthis("<font color=\"blue\">WARNING:"
1437: ." LWP get: $message: $filename</font>");
1438: return 'unavailable';
1439: } else {
1440: if ($remoteurl!~/\.meta$/) {
1441: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
1442: my $mresponse=$ua->request($mrequest,$filename.'.meta');
1443: if ($mresponse->is_error()) {
1444: unlink($filename.'.meta');
1445: &logthis(
1446: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
1447: }
1448: }
1449: rename($transname,$filename);
1450: return 'ok';
1451: }
1452: }
1453: }
1454: }
1455:
1456: # ------------------------------------------------ Get server side include body
1457: sub ssi_body {
1458: my ($filelink,%form)=@_;
1459: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
1460: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
1461: }
1462: my $output=($filelink=~/^http\:/?&externalssi($filelink):
1463: &ssi($filelink,%form));
1464: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
1465: $output=~s/^.*?\<body[^\>]*\>//si;
1466: $output=~s/(.*)\<\/body\s*\>.*?$/$1/si;
1467: return $output;
1468: }
1469:
1470: # --------------------------------------------------------- Server Side Include
1471:
1472: sub absolute_url {
1473: my ($host_name) = @_;
1474: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
1475: if ($host_name eq '') {
1476: $host_name = $ENV{'SERVER_NAME'};
1477: }
1478: return $protocol.$host_name;
1479: }
1480:
1481: sub ssi {
1482:
1483: my ($fn,%form)=@_;
1484:
1485: my $ua=new LWP::UserAgent;
1486:
1487: my $request;
1488:
1489: $form{'no_update_last_known'}=1;
1490: &Apache::lonenc::check_encrypt(\$fn);
1491: if (%form) {
1492: $request=new HTTP::Request('POST',&absolute_url().$fn);
1493: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys %form));
1494: } else {
1495: $request=new HTTP::Request('GET',&absolute_url().$fn);
1496: }
1497:
1498: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
1499: my $response=$ua->request($request);
1500:
1501: return $response->content;
1502: }
1503:
1504: sub externalssi {
1505: my ($url)=@_;
1506: my $ua=new LWP::UserAgent;
1507: my $request=new HTTP::Request('GET',$url);
1508: my $response=$ua->request($request);
1509: return $response->content;
1510: }
1511:
1512: # -------------------------------- Allow a /uploaded/ URI to be vouched for
1513:
1514: sub allowuploaded {
1515: my ($srcurl,$url)=@_;
1516: $url=&clutter(&declutter($url));
1517: my $dir=$url;
1518: $dir=~s/\/[^\/]+$//;
1519: my %httpref=();
1520: my $httpurl=&hreflocation('',$url);
1521: $httpref{'httpref.'.$httpurl}=$srcurl;
1522: &Apache::lonnet::appenv(%httpref);
1523: }
1524:
1525: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
1526: # input: action, courseID, current domain, intended
1527: # path to file, source of file, instruction to parse file for objects,
1528: # ref to hash for embedded objects,
1529: # ref to hash for codebase of java objects.
1530: #
1531: # output: url to file (if action was uploaddoc),
1532: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
1533: #
1534: # Allows directory structure to be used within lonUsers/../userfiles/ for a
1535: # course.
1536: #
1537: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1538: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
1539: # course's home server.
1540: #
1541: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
1542: # be copied from $source (current location) to
1543: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1544: # and will then be copied to
1545: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
1546: # course's home server.
1547: #
1548: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1549: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
1550: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1551: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
1552: # in course's home server.
1553: #
1554:
1555: sub process_coursefile {
1556: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase)=@_;
1557: my $fetchresult;
1558: my $home=&homeserver($docuname,$docudom);
1559: if ($action eq 'propagate') {
1560: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1561: $home);
1562: } else {
1563: my $fpath = '';
1564: my $fname = $file;
1565: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
1566: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
1567: my $filepath = &build_filepath($fpath);
1568: if ($action eq 'copy') {
1569: if ($source eq '') {
1570: $fetchresult = 'no source file';
1571: return $fetchresult;
1572: } else {
1573: my $destination = $filepath.'/'.$fname;
1574: rename($source,$destination);
1575: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1576: $home);
1577: }
1578: } elsif ($action eq 'uploaddoc') {
1579: open(my $fh,'>'.$filepath.'/'.$fname);
1580: print $fh $env{'form.'.$source};
1581: close($fh);
1582: if ($parser eq 'parse') {
1583: my $parse_result = &extract_embedded_items($filepath,$fname,$allfiles,$codebase);
1584: unless ($parse_result eq 'ok') {
1585: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
1586: }
1587: }
1588: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1589: $home);
1590: if ($fetchresult eq 'ok') {
1591: return '/uploaded/'.$fpath.'/'.$fname;
1592: } else {
1593: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1594: ' to host '.$home.': '.$fetchresult);
1595: return '/adm/notfound.html';
1596: }
1597: }
1598: }
1599: unless ( $fetchresult eq 'ok') {
1600: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1601: ' to host '.$home.': '.$fetchresult);
1602: }
1603: return $fetchresult;
1604: }
1605:
1606: sub build_filepath {
1607: my ($fpath) = @_;
1608: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
1609: unless ($fpath eq '') {
1610: my @parts=split('/',$fpath);
1611: foreach my $part (@parts) {
1612: $filepath.= '/'.$part;
1613: if ((-e $filepath)!=1) {
1614: mkdir($filepath,0777);
1615: }
1616: }
1617: }
1618: return $filepath;
1619: }
1620:
1621: sub store_edited_file {
1622: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
1623: my $file = $primary_url;
1624: $file =~ s#^/uploaded/$docudom/$docuname/##;
1625: my $fpath = '';
1626: my $fname = $file;
1627: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
1628: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
1629: my $filepath = &build_filepath($fpath);
1630: open(my $fh,'>'.$filepath.'/'.$fname);
1631: print $fh $content;
1632: close($fh);
1633: my $home=&homeserver($docuname,$docudom);
1634: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1635: $home);
1636: if ($$fetchresult eq 'ok') {
1637: return '/uploaded/'.$fpath.'/'.$fname;
1638: } else {
1639: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1640: ' to host '.$home.': '.$$fetchresult);
1641: return '/adm/notfound.html';
1642: }
1643: }
1644:
1645: sub clean_filename {
1646: my ($fname,$args)=@_;
1647: # Replace Windows backslashes by forward slashes
1648: $fname=~s/\\/\//g;
1649: if (!$args->{'keep_path'}) {
1650: # Get rid of everything but the actual filename
1651: $fname=~s/^.*\/([^\/]+)$/$1/;
1652: }
1653: # Replace spaces by underscores
1654: $fname=~s/\s+/\_/g;
1655: # Replace all other weird characters by nothing
1656: $fname=~s{[^/\w\.\-]}{}g;
1657: # Replace all .\d. sequences with _\d. so they no longer look like version
1658: # numbers
1659: $fname=~s/\.(\d+)(?=\.)/_$1/g;
1660: return $fname;
1661: }
1662:
1663: # --------------- Take an uploaded file and put it into the userfiles directory
1664: # input: $formname - the contents of the file are in $env{"form.$formname"}
1665: # the desired filenam is in $env{"form.$formname.filename"}
1666: # $coursedoc - if true up to the current course
1667: # if false
1668: # $subdir - directory in userfile to store the file into
1669: # $parser - instruction to parse file for objects ($parser = parse)
1670: # $allfiles - reference to hash for embedded objects
1671: # $codebase - reference to hash for codebase of java objects
1672: # $desuname - username for permanent storage of uploaded file
1673: # $dsetudom - domain for permanaent storage of uploaded file
1674: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
1675: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
1676: #
1677: # output: url of file in userspace, or error: <message>
1678: # or /adm/notfound.html if failure to upload occurse
1679:
1680:
1681: sub userfileupload {
1682: my ($formname,$coursedoc,$subdir,$parser,$allfiles,$codebase,$destuname,
1683: $destudom,$thumbwidth,$thumbheight)=@_;
1684: if (!defined($subdir)) { $subdir='unknown'; }
1685: my $fname=$env{'form.'.$formname.'.filename'};
1686: $fname=&clean_filename($fname);
1687: # See if there is anything left
1688: unless ($fname) { return 'error: no uploaded file'; }
1689: chop($env{'form.'.$formname});
1690: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) { #files uploaded to help request form are handled differently
1691: my $now = time;
1692: my $filepath = 'tmp/helprequests/'.$now;
1693: my @parts=split(/\//,$filepath);
1694: my $fullpath = $perlvar{'lonDaemons'};
1695: for (my $i=0;$i<@parts;$i++) {
1696: $fullpath .= '/'.$parts[$i];
1697: if ((-e $fullpath)!=1) {
1698: mkdir($fullpath,0777);
1699: }
1700: }
1701: open(my $fh,'>'.$fullpath.'/'.$fname);
1702: print $fh $env{'form.'.$formname};
1703: close($fh);
1704: return $fullpath.'/'.$fname;
1705: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) { #files uploaded to create course page are handled differently
1706: my $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
1707: '_'.$env{'user.domain'}.'/pending';
1708: my @parts=split(/\//,$filepath);
1709: my $fullpath = $perlvar{'lonDaemons'};
1710: for (my $i=0;$i<@parts;$i++) {
1711: $fullpath .= '/'.$parts[$i];
1712: if ((-e $fullpath)!=1) {
1713: mkdir($fullpath,0777);
1714: }
1715: }
1716: open(my $fh,'>'.$fullpath.'/'.$fname);
1717: print $fh $env{'form.'.$formname};
1718: close($fh);
1719: return $fullpath.'/'.$fname;
1720: }
1721:
1722: # Create the directory if not present
1723: $fname="$subdir/$fname";
1724: if ($coursedoc) {
1725: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
1726: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1727: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
1728: return &finishuserfileupload($docuname,$docudom,
1729: $formname,$fname,$parser,$allfiles,
1730: $codebase,$thumbwidth,$thumbheight);
1731: } else {
1732: $fname=$env{'form.folder'}.'/'.$fname;
1733: return &process_coursefile('uploaddoc',$docuname,$docudom,
1734: $fname,$formname,$parser,
1735: $allfiles,$codebase);
1736: }
1737: } elsif (defined($destuname)) {
1738: my $docuname=$destuname;
1739: my $docudom=$destudom;
1740: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
1741: $parser,$allfiles,$codebase,
1742: $thumbwidth,$thumbheight);
1743:
1744: } else {
1745: my $docuname=$env{'user.name'};
1746: my $docudom=$env{'user.domain'};
1747: if (exists($env{'form.group'})) {
1748: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
1749: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1750: }
1751: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
1752: $parser,$allfiles,$codebase,
1753: $thumbwidth,$thumbheight);
1754: }
1755: }
1756:
1757: sub finishuserfileupload {
1758: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
1759: $thumbwidth,$thumbheight) = @_;
1760: my $path=$docudom.'/'.$docuname.'/';
1761: my $filepath=$perlvar{'lonDocRoot'};
1762: my ($fnamepath,$file,$fetchthumb);
1763: $file=$fname;
1764: if ($fname=~m|/|) {
1765: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
1766: $path.=$fnamepath.'/';
1767: }
1768: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
1769: my $count;
1770: for ($count=4;$count<=$#parts;$count++) {
1771: $filepath.="/$parts[$count]";
1772: if ((-e $filepath)!=1) {
1773: mkdir($filepath,0777);
1774: }
1775: }
1776: # Save the file
1777: {
1778: if (!open(FH,'>'.$filepath.'/'.$file)) {
1779: &logthis('Failed to create '.$filepath.'/'.$file);
1780: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
1781: return '/adm/notfound.html';
1782: }
1783: if (!print FH ($env{'form.'.$formname})) {
1784: &logthis('Failed to write to '.$filepath.'/'.$file);
1785: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
1786: return '/adm/notfound.html';
1787: }
1788: close(FH);
1789: }
1790: if ($parser eq 'parse') {
1791: my $parse_result = &extract_embedded_items($filepath,$file,$allfiles,
1792: $codebase);
1793: unless ($parse_result eq 'ok') {
1794: &logthis('Failed to parse '.$filepath.$file.
1795: ' for embedded media: '.$parse_result);
1796: }
1797: }
1798: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
1799: my $input = $filepath.'/'.$file;
1800: my $output = $filepath.'/'.'tn-'.$file;
1801: my $thumbsize = $thumbwidth.'x'.$thumbheight;
1802: system("convert -sample $thumbsize $input $output");
1803: if (-e $filepath.'/'.'tn-'.$file) {
1804: $fetchthumb = 1;
1805: }
1806: }
1807:
1808: # Notify homeserver to grep it
1809: #
1810: my $docuhome=&homeserver($docuname,$docudom);
1811: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
1812: if ($fetchresult eq 'ok') {
1813: if ($fetchthumb) {
1814: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
1815: if ($thumbresult ne 'ok') {
1816: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
1817: $docuhome.': '.$thumbresult);
1818: }
1819: }
1820: #
1821: # Return the URL to it
1822: return '/uploaded/'.$path.$file;
1823: } else {
1824: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
1825: ': '.$fetchresult);
1826: return '/adm/notfound.html';
1827: }
1828: }
1829:
1830: sub extract_embedded_items {
1831: my ($filepath,$file,$allfiles,$codebase,$content) = @_;
1832: my @state = ();
1833: my %javafiles = (
1834: codebase => '',
1835: code => '',
1836: archive => ''
1837: );
1838: my %mediafiles = (
1839: src => '',
1840: movie => '',
1841: );
1842: my $p;
1843: if ($content) {
1844: $p = HTML::LCParser->new($content);
1845: } else {
1846: $p = HTML::LCParser->new($filepath.'/'.$file);
1847: }
1848: while (my $t=$p->get_token()) {
1849: if ($t->[0] eq 'S') {
1850: my ($tagname, $attr) = ($t->[1],$t->[2]);
1851: push(@state, $tagname);
1852: if (lc($tagname) eq 'allow') {
1853: &add_filetype($allfiles,$attr->{'src'},'src');
1854: }
1855: if (lc($tagname) eq 'img') {
1856: &add_filetype($allfiles,$attr->{'src'},'src');
1857: }
1858: if (lc($tagname) eq 'a') {
1859: &add_filetype($allfiles,$attr->{'href'},'href');
1860: }
1861: if (lc($tagname) eq 'script') {
1862: if ($attr->{'archive'} =~ /\.jar$/i) {
1863: &add_filetype($allfiles,$attr->{'archive'},'archive');
1864: } else {
1865: &add_filetype($allfiles,$attr->{'src'},'src');
1866: }
1867: }
1868: if (lc($tagname) eq 'link') {
1869: if (lc($attr->{'rel'}) eq 'stylesheet') {
1870: &add_filetype($allfiles,$attr->{'href'},'href');
1871: }
1872: }
1873: if (lc($tagname) eq 'object' ||
1874: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
1875: foreach my $item (keys(%javafiles)) {
1876: $javafiles{$item} = '';
1877: }
1878: }
1879: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
1880: my $name = lc($attr->{'name'});
1881: foreach my $item (keys(%javafiles)) {
1882: if ($name eq $item) {
1883: $javafiles{$item} = $attr->{'value'};
1884: last;
1885: }
1886: }
1887: foreach my $item (keys(%mediafiles)) {
1888: if ($name eq $item) {
1889: &add_filetype($allfiles, $attr->{'value'}, 'value');
1890: last;
1891: }
1892: }
1893: }
1894: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
1895: foreach my $item (keys(%javafiles)) {
1896: if ($attr->{$item}) {
1897: $javafiles{$item} = $attr->{$item};
1898: last;
1899: }
1900: }
1901: foreach my $item (keys(%mediafiles)) {
1902: if ($attr->{$item}) {
1903: &add_filetype($allfiles,$attr->{$item},$item);
1904: last;
1905: }
1906: }
1907: }
1908: } elsif ($t->[0] eq 'E') {
1909: my ($tagname) = ($t->[1]);
1910: if ($javafiles{'codebase'} ne '') {
1911: $javafiles{'codebase'} .= '/';
1912: }
1913: if (lc($tagname) eq 'applet' ||
1914: lc($tagname) eq 'object' ||
1915: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
1916: ) {
1917: foreach my $item (keys(%javafiles)) {
1918: if ($item ne 'codebase' && $javafiles{$item} ne '') {
1919: my $file=$javafiles{'codebase'}.$javafiles{$item};
1920: &add_filetype($allfiles,$file,$item);
1921: }
1922: }
1923: }
1924: pop @state;
1925: }
1926: }
1927: return 'ok';
1928: }
1929:
1930: sub add_filetype {
1931: my ($allfiles,$file,$type)=@_;
1932: if (exists($allfiles->{$file})) {
1933: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
1934: push(@{$allfiles->{$file}}, &escape($type));
1935: }
1936: } else {
1937: @{$allfiles->{$file}} = (&escape($type));
1938: }
1939: }
1940:
1941: sub removeuploadedurl {
1942: my ($url)=@_;
1943: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
1944: return &removeuserfile($uname,$udom,$fname);
1945: }
1946:
1947: sub removeuserfile {
1948: my ($docuname,$docudom,$fname)=@_;
1949: my $home=&homeserver($docuname,$docudom);
1950: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
1951: if ($result eq 'ok') {
1952: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
1953: my $metafile = $fname.'.meta';
1954: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
1955: my $url = "/uploaded/$docudom/$docuname/$fname";
1956: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
1957: my $sqlresult =
1958: &update_portfolio_table($docuname,$docudom,$file,
1959: 'portfolio_metadata',$group,
1960: 'delete');
1961: }
1962: }
1963: return $result;
1964: }
1965:
1966: sub mkdiruserfile {
1967: my ($docuname,$docudom,$dir)=@_;
1968: my $home=&homeserver($docuname,$docudom);
1969: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
1970: }
1971:
1972: sub renameuserfile {
1973: my ($docuname,$docudom,$old,$new)=@_;
1974: my $home=&homeserver($docuname,$docudom);
1975: my $result = &reply("renameuserfile:$docudom:$docuname:".
1976: &escape("$old").':'.&escape("$new"),$home);
1977: if ($result eq 'ok') {
1978: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
1979: my $oldmeta = $old.'.meta';
1980: my $newmeta = $new.'.meta';
1981: my $metaresult =
1982: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
1983: my $url = "/uploaded/$docudom/$docuname/$old";
1984: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
1985: my $sqlresult =
1986: &update_portfolio_table($docuname,$docudom,$file,
1987: 'portfolio_metadata',$group,
1988: 'delete');
1989: }
1990: }
1991: return $result;
1992: }
1993:
1994: # ------------------------------------------------------------------------- Log
1995:
1996: sub log {
1997: my ($dom,$nam,$hom,$what)=@_;
1998: return critical("log:$dom:$nam:$what",$hom);
1999: }
2000:
2001: # ------------------------------------------------------------------ Course Log
2002: #
2003: # This routine flushes several buffers of non-mission-critical nature
2004: #
2005:
2006: sub flushcourselogs {
2007: &logthis('Flushing log buffers');
2008: #
2009: # course logs
2010: # This is a log of all transactions in a course, which can be used
2011: # for data mining purposes
2012: #
2013: # It also collects the courseid database, which lists last transaction
2014: # times and course titles for all courseids
2015: #
2016: my %courseidbuffer=();
2017: foreach my $crsid (keys %courselogs) {
2018: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
2019: &escape($courselogs{$crsid}),
2020: $coursehombuf{$crsid}) eq 'ok') {
2021: delete $courselogs{$crsid};
2022: } else {
2023: &logthis('Failed to flush log buffer for '.$crsid);
2024: if (length($courselogs{$crsid})>40000) {
2025: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
2026: " exceeded maximum size, deleting.</font>");
2027: delete $courselogs{$crsid};
2028: }
2029: }
2030: if ($courseidbuffer{$coursehombuf{$crsid}}) {
2031: $courseidbuffer{$coursehombuf{$crsid}}.='&'.
2032: &escape($crsid).'='.&escape($coursedescrbuf{$crsid}).
2033: ':'.&escape($courseinstcodebuf{$crsid}).':'.&escape($courseownerbuf{$crsid}).':'.&escape($coursetypebuf{$crsid});
2034: } else {
2035: $courseidbuffer{$coursehombuf{$crsid}}=
2036: &escape($crsid).'='.&escape($coursedescrbuf{$crsid}).
2037: ':'.&escape($courseinstcodebuf{$crsid}).':'.&escape($courseownerbuf{$crsid}).':'.&escape($coursetypebuf{$crsid});
2038: }
2039: }
2040: #
2041: # Write course id database (reverse lookup) to homeserver of courses
2042: # Is used in pickcourse
2043: #
2044: foreach my $crs_home (keys(%courseidbuffer)) {
2045: &courseidput(&host_domain($crs_home),$courseidbuffer{$crs_home},
2046: $crs_home);
2047: }
2048: #
2049: # File accesses
2050: # Writes to the dynamic metadata of resources to get hit counts, etc.
2051: #
2052: foreach my $entry (keys(%accesshash)) {
2053: if ($entry =~ /___count$/) {
2054: my ($dom,$name);
2055: ($dom,$name,undef)=
2056: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
2057: if (! defined($dom) || $dom eq '' ||
2058: ! defined($name) || $name eq '') {
2059: my $cid = $env{'request.course.id'};
2060: $dom = $env{'request.'.$cid.'.domain'};
2061: $name = $env{'request.'.$cid.'.num'};
2062: }
2063: my $value = $accesshash{$entry};
2064: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
2065: my %temphash=($url => $value);
2066: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
2067: if ($result eq 'ok') {
2068: delete $accesshash{$entry};
2069: } elsif ($result eq 'unknown_cmd') {
2070: # Target server has old code running on it.
2071: my %temphash=($entry => $value);
2072: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2073: delete $accesshash{$entry};
2074: }
2075: }
2076: } else {
2077: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
2078: my %temphash=($entry => $accesshash{$entry});
2079: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2080: delete $accesshash{$entry};
2081: }
2082: }
2083: }
2084: #
2085: # Roles
2086: # Reverse lookup of user roles for course faculty/staff and co-authorship
2087: #
2088: foreach my $entry (keys(%userrolehash)) {
2089: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
2090: split(/\:/,$entry);
2091: if (&Apache::lonnet::put('nohist_userroles',
2092: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
2093: $rudom,$runame) eq 'ok') {
2094: delete $userrolehash{$entry};
2095: }
2096: }
2097: #
2098: # Reverse lookup of domain roles (dc, ad, li, sc, au)
2099: #
2100: my %domrolebuffer = ();
2101: foreach my $entry (keys %domainrolehash) {
2102: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
2103: if ($domrolebuffer{$rudom}) {
2104: $domrolebuffer{$rudom}.='&'.&escape($entry).
2105: '='.&escape($domainrolehash{$entry});
2106: } else {
2107: $domrolebuffer{$rudom}.=&escape($entry).
2108: '='.&escape($domainrolehash{$entry});
2109: }
2110: delete $domainrolehash{$entry};
2111: }
2112: foreach my $dom (keys(%domrolebuffer)) {
2113: my %servers = &get_servers($dom,'library');
2114: foreach my $tryserver (keys(%servers)) {
2115: unless (&reply('domroleput:'.$dom.':'.
2116: $domrolebuffer{$dom},$tryserver) eq 'ok') {
2117: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
2118: }
2119: }
2120: }
2121: $dumpcount++;
2122: }
2123:
2124: sub courselog {
2125: my $what=shift;
2126: $what=time.':'.$what;
2127: unless ($env{'request.course.id'}) { return ''; }
2128: $coursedombuf{$env{'request.course.id'}}=
2129: $env{'course.'.$env{'request.course.id'}.'.domain'};
2130: $coursenumbuf{$env{'request.course.id'}}=
2131: $env{'course.'.$env{'request.course.id'}.'.num'};
2132: $coursehombuf{$env{'request.course.id'}}=
2133: $env{'course.'.$env{'request.course.id'}.'.home'};
2134: $coursedescrbuf{$env{'request.course.id'}}=
2135: $env{'course.'.$env{'request.course.id'}.'.description'};
2136: $courseinstcodebuf{$env{'request.course.id'}}=
2137: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
2138: $courseownerbuf{$env{'request.course.id'}}=
2139: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
2140: $coursetypebuf{$env{'request.course.id'}}=
2141: $env{'course.'.$env{'request.course.id'}.'.type'};
2142: if (defined $courselogs{$env{'request.course.id'}}) {
2143: $courselogs{$env{'request.course.id'}}.='&'.$what;
2144: } else {
2145: $courselogs{$env{'request.course.id'}}.=$what;
2146: }
2147: if (length($courselogs{$env{'request.course.id'}})>4048) {
2148: &flushcourselogs();
2149: }
2150: }
2151:
2152: sub courseacclog {
2153: my $fnsymb=shift;
2154: unless ($env{'request.course.id'}) { return ''; }
2155: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
2156: if ($fnsymb=~/(problem|exam|quiz|assess|survey|form|task|page)$/) {
2157: $what.=':POST';
2158: # FIXME: Probably ought to escape things....
2159: foreach my $key (keys(%env)) {
2160: if ($key=~/^form\.(.*)/) {
2161: $what.=':'.$1.'='.$env{$key};
2162: }
2163: }
2164: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
2165: # FIXME: We should not be depending on a form parameter that someone
2166: # editing lonsearchcat.pm might change in the future.
2167: if ($env{'form.phase'} eq 'course_search') {
2168: $what.= ':POST';
2169: # FIXME: Probably ought to escape things....
2170: foreach my $element ('courseexp','crsfulltext','crsrelated',
2171: 'crsdiscuss') {
2172: $what.=':'.$element.'='.$env{'form.'.$element};
2173: }
2174: }
2175: }
2176: &courselog($what);
2177: }
2178:
2179: sub countacc {
2180: my $url=&declutter(shift);
2181: return if (! defined($url) || $url eq '');
2182: unless ($env{'request.course.id'}) { return ''; }
2183: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
2184: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
2185: $accesshash{$key}++;
2186: }
2187:
2188: sub linklog {
2189: my ($from,$to)=@_;
2190: $from=&declutter($from);
2191: $to=&declutter($to);
2192: $accesshash{$from.'___'.$to.'___comefrom'}=1;
2193: $accesshash{$to.'___'.$from.'___goto'}=1;
2194: }
2195:
2196: sub userrolelog {
2197: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
2198: if (($trole=~/^ca/) || ($trole=~/^aa/) ||
2199: ($trole=~/^in/) || ($trole=~/^cc/) ||
2200: ($trole=~/^ep/) || ($trole=~/^cr/) ||
2201: ($trole=~/^ta/)) {
2202: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2203: $userrolehash
2204: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2205: =$tend.':'.$tstart;
2206: }
2207: if (($env{'request.role'} =~ /dc\./) &&
2208: (($trole=~/^au/) || ($trole=~/^in/) ||
2209: ($trole=~/^cc/) || ($trole=~/^ep/) ||
2210: ($trole=~/^cr/) || ($trole=~/^ta/))) {
2211: $userrolehash
2212: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
2213: =$tend.':'.$tstart;
2214: }
2215: if (($trole=~/^dc/) || ($trole=~/^ad/) ||
2216: ($trole=~/^li/) || ($trole=~/^li/) ||
2217: ($trole=~/^au/) || ($trole=~/^dg/) ||
2218: ($trole=~/^sc/)) {
2219: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2220: $domainrolehash
2221: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2222: = $tend.':'.$tstart;
2223: }
2224: }
2225:
2226: sub get_course_adv_roles {
2227: my $cid=shift;
2228: $cid=$env{'request.course.id'} unless (defined($cid));
2229: my %coursehash=&coursedescription($cid);
2230: my %nothide=();
2231: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2232: $nothide{join(':',split(/[\@\:]/,$user))}=1;
2233: }
2234: my %returnhash=();
2235: my %dumphash=
2236: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
2237: my $now=time;
2238: foreach my $entry (keys %dumphash) {
2239: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
2240: if (($tstart) && ($tstart<0)) { next; }
2241: if (($tend) && ($tend<$now)) { next; }
2242: if (($tstart) && ($now<$tstart)) { next; }
2243: my ($role,$username,$domain,$section)=split(/\:/,$entry);
2244: if ($username eq '' || $domain eq '') { next; }
2245: if ((&privileged($username,$domain)) &&
2246: (!$nothide{$username.':'.$domain})) { next; }
2247: if ($role eq 'cr') { next; }
2248: my $key=&plaintext($role);
2249: if ($section) { $key.=' (Sec/Grp '.$section.')'; }
2250: if ($returnhash{$key}) {
2251: $returnhash{$key}.=','.$username.':'.$domain;
2252: } else {
2253: $returnhash{$key}=$username.':'.$domain;
2254: }
2255: }
2256: return %returnhash;
2257: }
2258:
2259: sub get_my_roles {
2260: my ($uname,$udom,$context,$types,$roles,$roledoms)=@_;
2261: unless (defined($uname)) { $uname=$env{'user.name'}; }
2262: unless (defined($udom)) { $udom=$env{'user.domain'}; }
2263: my %dumphash;
2264: if ($context eq 'userroles') {
2265: %dumphash = &dump('roles',$udom,$uname);
2266: } else {
2267: %dumphash=
2268: &dump('nohist_userroles',$udom,$uname);
2269: }
2270: my %returnhash=();
2271: my $now=time;
2272: foreach my $entry (keys(%dumphash)) {
2273: my ($role,$tend,$tstart);
2274: if ($context eq 'userroles') {
2275: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
2276: } else {
2277: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
2278: }
2279: if (($tstart) && ($tstart<0)) { next; }
2280: my $status = 'active';
2281: if (($tend) && ($tend<$now)) {
2282: $status = 'previous';
2283: }
2284: if (($tstart) && ($now<$tstart)) {
2285: $status = 'future';
2286: }
2287: if (ref($types) eq 'ARRAY') {
2288: if (!grep(/^\Q$status\E$/,@{$types})) {
2289: next;
2290: }
2291: } else {
2292: if ($status ne 'active') {
2293: next;
2294: }
2295: }
2296: my ($rolecode,$username,$domain,$section,$area);
2297: if ($context eq 'userroles') {
2298: ($area,$rolecode) = split(/_/,$entry);
2299: (undef,$domain,$username,$section) = split(/\//,$area);
2300: } else {
2301: ($role,$username,$domain,$section) = split(/\:/,$entry);
2302: }
2303: if (ref($roledoms) eq 'ARRAY') {
2304: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
2305: next;
2306: }
2307: }
2308: if (ref($roles) eq 'ARRAY') {
2309: if (!grep(/^\Q$role\E$/,@{$roles})) {
2310: next;
2311: }
2312: }
2313: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
2314: }
2315: return %returnhash;
2316: }
2317:
2318: # ----------------------------------------------------- Frontpage Announcements
2319: #
2320: #
2321:
2322: sub postannounce {
2323: my ($server,$text)=@_;
2324: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
2325: unless ($text=~/\w/) { $text=''; }
2326: return &reply('setannounce:'.&escape($text),$server);
2327: }
2328:
2329: sub getannounce {
2330:
2331: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
2332: my $announcement='';
2333: while (my $line = <$fh>) { $announcement .= $line; }
2334: close($fh);
2335: if ($announcement=~/\w/) {
2336: return
2337: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
2338: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
2339: } else {
2340: return '';
2341: }
2342: } else {
2343: return '';
2344: }
2345: }
2346:
2347: # ---------------------------------------------------------- Course ID routines
2348: # Deal with domain's nohist_courseid.db files
2349: #
2350:
2351: sub courseidput {
2352: my ($domain,$what,$coursehome)=@_;
2353: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
2354: }
2355:
2356: sub courseiddump {
2357: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,$coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok)=@_;
2358: my %returnhash=();
2359: unless ($domfilter) { $domfilter=''; }
2360: my %libserv = &all_library();
2361: foreach my $tryserver (keys(%libserv)) {
2362: if ( ( $hostidflag == 1
2363: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
2364: || (!defined($hostidflag)) ) {
2365:
2366: if ($domfilter eq ''
2367: || (&host_domain($tryserver) eq $domfilter)) {
2368: foreach my $line (
2369: split(/\&/,&reply('courseiddump:'.&host_domain($tryserver).':'.
2370: $sincefilter.':'.&escape($descfilter).':'.
2371: &escape($instcodefilter).':'.&escape($ownerfilter).':'.&escape($coursefilter).':'.&escape($typefilter).':'.&escape($regexp_ok),
2372: $tryserver))) {
2373: my ($key,$value)=split(/\=/,$line,2);
2374: if (($key) && ($value)) {
2375: $returnhash{&unescape($key)}=$value;
2376: }
2377: }
2378: }
2379: }
2380: }
2381: return %returnhash;
2382: }
2383:
2384: # ---------------------------------------------------------- DC e-mail
2385:
2386: sub dcmailput {
2387: my ($domain,$msgid,$message,$server)=@_;
2388: my $status = &Apache::lonnet::critical(
2389: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
2390: &escape($message),$server);
2391: return $status;
2392: }
2393:
2394: sub dcmaildump {
2395: my ($dom,$startdate,$enddate,$senders) = @_;
2396: my %returnhash=();
2397:
2398: if (defined(&domain($dom,'primary'))) {
2399: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
2400: &escape($enddate).':';
2401: my @esc_senders=map { &escape($_)} @$senders;
2402: $cmd.=&escape(join('&',@esc_senders));
2403: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
2404: my ($key,$value) = split(/\=/,$line,2);
2405: if (($key) && ($value)) {
2406: $returnhash{&unescape($key)} = &unescape($value);
2407: }
2408: }
2409: }
2410: return %returnhash;
2411: }
2412: # ---------------------------------------------------------- Domain roles
2413:
2414: sub get_domain_roles {
2415: my ($dom,$roles,$startdate,$enddate)=@_;
2416: if (undef($startdate) || $startdate eq '') {
2417: $startdate = '.';
2418: }
2419: if (undef($enddate) || $enddate eq '') {
2420: $enddate = '.';
2421: }
2422: my $rolelist = join(':',@{$roles});
2423: my %personnel = ();
2424:
2425: my %servers = &get_servers($dom,'library');
2426: foreach my $tryserver (keys(%servers)) {
2427: %{$personnel{$tryserver}}=();
2428: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
2429: &escape($startdate).':'.
2430: &escape($enddate).':'.
2431: &escape($rolelist), $tryserver))) {
2432: my ($key,$value) = split(/\=/,$line,2);
2433: if (($key) && ($value)) {
2434: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
2435: }
2436: }
2437: }
2438: return %personnel;
2439: }
2440:
2441: # ----------------------------------------------------------- Check out an item
2442:
2443: sub get_first_access {
2444: my ($type,$argsymb)=@_;
2445: my ($symb,$courseid,$udom,$uname)=&whichuser();
2446: if ($argsymb) { $symb=$argsymb; }
2447: my ($map,$id,$res)=&decode_symb($symb);
2448: if ($type eq 'map') {
2449: $res=&symbread($map);
2450: } else {
2451: $res=$symb;
2452: }
2453: my %times=&get('firstaccesstimes',["$courseid\0$res"],$udom,$uname);
2454: return $times{"$courseid\0$res"};
2455: }
2456:
2457: sub set_first_access {
2458: my ($type)=@_;
2459: my ($symb,$courseid,$udom,$uname)=&whichuser();
2460: my ($map,$id,$res)=&decode_symb($symb);
2461: if ($type eq 'map') {
2462: $res=&symbread($map);
2463: } else {
2464: $res=$symb;
2465: }
2466: my $firstaccess=&get_first_access($type,$symb);
2467: if (!$firstaccess) {
2468: return &put('firstaccesstimes',{"$courseid\0$res"=>time},$udom,$uname);
2469: }
2470: return 'already_set';
2471: }
2472:
2473: sub checkout {
2474: my ($symb,$tuname,$tudom,$tcrsid)=@_;
2475: my $now=time;
2476: my $lonhost=$perlvar{'lonHostID'};
2477: my $infostr=&escape(
2478: 'CHECKOUTTOKEN&'.
2479: $tuname.'&'.
2480: $tudom.'&'.
2481: $tcrsid.'&'.
2482: $symb.'&'.
2483: $now.'&'.$ENV{'REMOTE_ADDR'});
2484: my $token=&reply('tmpput:'.$infostr,$lonhost);
2485: if ($token=~/^error\:/) {
2486: &logthis("<font color=\"blue\">WARNING: ".
2487: "Checkout tmpput failed ".$tudom.' - '.$tuname.' - '.$symb.
2488: "</font>");
2489: return '';
2490: }
2491:
2492: $token=~s/^(\d+)\_.*\_(\d+)$/$1\*$2\*$lonhost/;
2493: $token=~tr/a-z/A-Z/;
2494:
2495: my %infohash=('resource.0.outtoken' => $token,
2496: 'resource.0.checkouttime' => $now,
2497: 'resource.0.outremote' => $ENV{'REMOTE_ADDR'});
2498:
2499: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
2500: return '';
2501: } else {
2502: &logthis("<font color=\"blue\">WARNING: ".
2503: "Checkout cstore failed ".$tudom.' - '.$tuname.' - '.$symb.
2504: "</font>");
2505: }
2506:
2507: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
2508: &escape('Checkout '.$infostr.' - '.
2509: $token)) ne 'ok') {
2510: return '';
2511: } else {
2512: &logthis("<font color=\"blue\">WARNING: ".
2513: "Checkout log failed ".$tudom.' - '.$tuname.' - '.$symb.
2514: "</font>");
2515: }
2516: return $token;
2517: }
2518:
2519: # ------------------------------------------------------------ Check in an item
2520:
2521: sub checkin {
2522: my $token=shift;
2523: my $now=time;
2524: my ($ta,$tb,$lonhost)=split(/\*/,$token);
2525: $lonhost=~tr/A-Z/a-z/;
2526: my $dtoken=$ta.'_'.&hostname($lonhost).'_'.$tb;
2527: $dtoken=~s/\W/\_/g;
2528: my ($dummy,$tuname,$tudom,$tcrsid,$symb,$chtim,$rmaddr)=
2529: split(/\&/,&unescape(&reply('tmpget:'.$dtoken,$lonhost)));
2530:
2531: unless (($tuname) && ($tudom)) {
2532: &logthis('Check in '.$token.' ('.$dtoken.') failed');
2533: return '';
2534: }
2535:
2536: unless (&allowed('mgr',$tcrsid)) {
2537: &logthis('Check in '.$token.' ('.$dtoken.') unauthorized: '.
2538: $env{'user.name'}.' - '.$env{'user.domain'});
2539: return '';
2540: }
2541:
2542: my %infohash=('resource.0.intoken' => $token,
2543: 'resource.0.checkintime' => $now,
2544: 'resource.0.inremote' => $ENV{'REMOTE_ADDR'});
2545:
2546: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
2547: return '';
2548: }
2549:
2550: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
2551: &escape('Checkin - '.$token)) ne 'ok') {
2552: return '';
2553: }
2554:
2555: return ($symb,$tuname,$tudom,$tcrsid);
2556: }
2557:
2558: # --------------------------------------------- Set Expire Date for Spreadsheet
2559:
2560: sub expirespread {
2561: my ($uname,$udom,$stype,$usymb)=@_;
2562: my $cid=$env{'request.course.id'};
2563: if ($cid) {
2564: my $now=time;
2565: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
2566: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
2567: $env{'course.'.$cid.'.num'}.
2568: ':nohist_expirationdates:'.
2569: &escape($key).'='.$now,
2570: $env{'course.'.$cid.'.home'})
2571: }
2572: return 'ok';
2573: }
2574:
2575: # ----------------------------------------------------- Devalidate Spreadsheets
2576:
2577: sub devalidate {
2578: my ($symb,$uname,$udom)=@_;
2579: my $cid=$env{'request.course.id'};
2580: if ($cid) {
2581: # delete the stored spreadsheets for
2582: # - the student level sheet of this user in course's homespace
2583: # - the assessment level sheet for this resource
2584: # for this user in user's homespace
2585: # - current conditional state info
2586: my $key=$uname.':'.$udom.':';
2587: my $status=
2588: &del('nohist_calculatedsheets',
2589: [$key.'studentcalc:'],
2590: $env{'course.'.$cid.'.domain'},
2591: $env{'course.'.$cid.'.num'})
2592: .' '.
2593: &del('nohist_calculatedsheets_'.$cid,
2594: [$key.'assesscalc:'.$symb],$udom,$uname);
2595: unless ($status eq 'ok ok') {
2596: &logthis('Could not devalidate spreadsheet '.
2597: $uname.' at '.$udom.' for '.
2598: $symb.': '.$status);
2599: }
2600: &delenv('user.state.'.$cid);
2601: }
2602: }
2603:
2604: sub get_scalar {
2605: my ($string,$end) = @_;
2606: my $value;
2607: if ($$string =~ s/^([^&]*?)($end)/$2/) {
2608: $value = $1;
2609: } elsif ($$string =~ s/^([^&]*?)&//) {
2610: $value = $1;
2611: }
2612: return &unescape($value);
2613: }
2614:
2615: sub array2str {
2616: my (@array) = @_;
2617: my $result=&arrayref2str(\@array);
2618: $result=~s/^__ARRAY_REF__//;
2619: $result=~s/__END_ARRAY_REF__$//;
2620: return $result;
2621: }
2622:
2623: sub arrayref2str {
2624: my ($arrayref) = @_;
2625: my $result='__ARRAY_REF__';
2626: foreach my $elem (@$arrayref) {
2627: if(ref($elem) eq 'ARRAY') {
2628: $result.=&arrayref2str($elem).'&';
2629: } elsif(ref($elem) eq 'HASH') {
2630: $result.=&hashref2str($elem).'&';
2631: } elsif(ref($elem)) {
2632: #print("Got a ref of ".(ref($elem))." skipping.");
2633: } else {
2634: $result.=&escape($elem).'&';
2635: }
2636: }
2637: $result=~s/\&$//;
2638: $result .= '__END_ARRAY_REF__';
2639: return $result;
2640: }
2641:
2642: sub hash2str {
2643: my (%hash) = @_;
2644: my $result=&hashref2str(\%hash);
2645: $result=~s/^__HASH_REF__//;
2646: $result=~s/__END_HASH_REF__$//;
2647: return $result;
2648: }
2649:
2650: sub hashref2str {
2651: my ($hashref)=@_;
2652: my $result='__HASH_REF__';
2653: foreach my $key (sort(keys(%$hashref))) {
2654: if (ref($key) eq 'ARRAY') {
2655: $result.=&arrayref2str($key).'=';
2656: } elsif (ref($key) eq 'HASH') {
2657: $result.=&hashref2str($key).'=';
2658: } elsif (ref($key)) {
2659: $result.='=';
2660: #print("Got a ref of ".(ref($key))." skipping.");
2661: } else {
2662: if ($key) {$result.=&escape($key).'=';} else { last; }
2663: }
2664:
2665: if(ref($hashref->{$key}) eq 'ARRAY') {
2666: $result.=&arrayref2str($hashref->{$key}).'&';
2667: } elsif(ref($hashref->{$key}) eq 'HASH') {
2668: $result.=&hashref2str($hashref->{$key}).'&';
2669: } elsif(ref($hashref->{$key})) {
2670: $result.='&';
2671: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
2672: } else {
2673: $result.=&escape($hashref->{$key}).'&';
2674: }
2675: }
2676: $result=~s/\&$//;
2677: $result .= '__END_HASH_REF__';
2678: return $result;
2679: }
2680:
2681: sub str2hash {
2682: my ($string)=@_;
2683: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
2684: return %$hash;
2685: }
2686:
2687: sub str2hashref {
2688: my ($string) = @_;
2689:
2690: my %hash;
2691:
2692: if($string !~ /^__HASH_REF__/) {
2693: if (! ($string eq '' || !defined($string))) {
2694: $hash{'error'}='Not hash reference';
2695: }
2696: return (\%hash, $string);
2697: }
2698:
2699: $string =~ s/^__HASH_REF__//;
2700:
2701: while($string !~ /^__END_HASH_REF__/) {
2702: #key
2703: my $key='';
2704: if($string =~ /^__HASH_REF__/) {
2705: ($key, $string)=&str2hashref($string);
2706: if(defined($key->{'error'})) {
2707: $hash{'error'}='Bad data';
2708: return (\%hash, $string);
2709: }
2710: } elsif($string =~ /^__ARRAY_REF__/) {
2711: ($key, $string)=&str2arrayref($string);
2712: if($key->[0] eq 'Array reference error') {
2713: $hash{'error'}='Bad data';
2714: return (\%hash, $string);
2715: }
2716: } else {
2717: $string =~ s/^(.*?)=//;
2718: $key=&unescape($1);
2719: }
2720: $string =~ s/^=//;
2721:
2722: #value
2723: my $value='';
2724: if($string =~ /^__HASH_REF__/) {
2725: ($value, $string)=&str2hashref($string);
2726: if(defined($value->{'error'})) {
2727: $hash{'error'}='Bad data';
2728: return (\%hash, $string);
2729: }
2730: } elsif($string =~ /^__ARRAY_REF__/) {
2731: ($value, $string)=&str2arrayref($string);
2732: if($value->[0] eq 'Array reference error') {
2733: $hash{'error'}='Bad data';
2734: return (\%hash, $string);
2735: }
2736: } else {
2737: $value=&get_scalar(\$string,'__END_HASH_REF__');
2738: }
2739: $string =~ s/^&//;
2740:
2741: $hash{$key}=$value;
2742: }
2743:
2744: $string =~ s/^__END_HASH_REF__//;
2745:
2746: return (\%hash, $string);
2747: }
2748:
2749: sub str2array {
2750: my ($string)=@_;
2751: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
2752: return @$array;
2753: }
2754:
2755: sub str2arrayref {
2756: my ($string) = @_;
2757: my @array;
2758:
2759: if($string !~ /^__ARRAY_REF__/) {
2760: if (! ($string eq '' || !defined($string))) {
2761: $array[0]='Array reference error';
2762: }
2763: return (\@array, $string);
2764: }
2765:
2766: $string =~ s/^__ARRAY_REF__//;
2767:
2768: while($string !~ /^__END_ARRAY_REF__/) {
2769: my $value='';
2770: if($string =~ /^__HASH_REF__/) {
2771: ($value, $string)=&str2hashref($string);
2772: if(defined($value->{'error'})) {
2773: $array[0] ='Array reference error';
2774: return (\@array, $string);
2775: }
2776: } elsif($string =~ /^__ARRAY_REF__/) {
2777: ($value, $string)=&str2arrayref($string);
2778: if($value->[0] eq 'Array reference error') {
2779: $array[0] ='Array reference error';
2780: return (\@array, $string);
2781: }
2782: } else {
2783: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
2784: }
2785: $string =~ s/^&//;
2786:
2787: push(@array, $value);
2788: }
2789:
2790: $string =~ s/^__END_ARRAY_REF__//;
2791:
2792: return (\@array, $string);
2793: }
2794:
2795: # -------------------------------------------------------------------Temp Store
2796:
2797: sub tmpreset {
2798: my ($symb,$namespace,$domain,$stuname) = @_;
2799: if (!$symb) {
2800: $symb=&symbread();
2801: if (!$symb) { $symb= $env{'request.url'}; }
2802: }
2803: $symb=escape($symb);
2804:
2805: if (!$namespace) { $namespace=$env{'request.state'}; }
2806: $namespace=~s/\//\_/g;
2807: $namespace=~s/\W//g;
2808:
2809: if (!$domain) { $domain=$env{'user.domain'}; }
2810: if (!$stuname) { $stuname=$env{'user.name'}; }
2811: if ($domain eq 'public' && $stuname eq 'public') {
2812: $stuname=$ENV{'REMOTE_ADDR'};
2813: }
2814: my $path=$perlvar{'lonDaemons'}.'/tmp';
2815: my %hash;
2816: if (tie(%hash,'GDBM_File',
2817: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
2818: &GDBM_WRCREAT(),0640)) {
2819: foreach my $key (keys %hash) {
2820: if ($key=~ /:$symb/) {
2821: delete($hash{$key});
2822: }
2823: }
2824: }
2825: }
2826:
2827: sub tmpstore {
2828: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
2829:
2830: if (!$symb) {
2831: $symb=&symbread();
2832: if (!$symb) { $symb= $env{'request.url'}; }
2833: }
2834: $symb=escape($symb);
2835:
2836: if (!$namespace) {
2837: # I don't think we would ever want to store this for a course.
2838: # it seems this will only be used if we don't have a course.
2839: #$namespace=$env{'request.course.id'};
2840: #if (!$namespace) {
2841: $namespace=$env{'request.state'};
2842: #}
2843: }
2844: $namespace=~s/\//\_/g;
2845: $namespace=~s/\W//g;
2846: if (!$domain) { $domain=$env{'user.domain'}; }
2847: if (!$stuname) { $stuname=$env{'user.name'}; }
2848: if ($domain eq 'public' && $stuname eq 'public') {
2849: $stuname=$ENV{'REMOTE_ADDR'};
2850: }
2851: my $now=time;
2852: my %hash;
2853: my $path=$perlvar{'lonDaemons'}.'/tmp';
2854: if (tie(%hash,'GDBM_File',
2855: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
2856: &GDBM_WRCREAT(),0640)) {
2857: $hash{"version:$symb"}++;
2858: my $version=$hash{"version:$symb"};
2859: my $allkeys='';
2860: foreach my $key (keys(%$storehash)) {
2861: $allkeys.=$key.':';
2862: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
2863: }
2864: $hash{"$version:$symb:timestamp"}=$now;
2865: $allkeys.='timestamp';
2866: $hash{"$version:keys:$symb"}=$allkeys;
2867: if (untie(%hash)) {
2868: return 'ok';
2869: } else {
2870: return "error:$!";
2871: }
2872: } else {
2873: return "error:$!";
2874: }
2875: }
2876:
2877: # -----------------------------------------------------------------Temp Restore
2878:
2879: sub tmprestore {
2880: my ($symb,$namespace,$domain,$stuname) = @_;
2881:
2882: if (!$symb) {
2883: $symb=&symbread();
2884: if (!$symb) { $symb= $env{'request.url'}; }
2885: }
2886: $symb=escape($symb);
2887:
2888: if (!$namespace) { $namespace=$env{'request.state'}; }
2889:
2890: if (!$domain) { $domain=$env{'user.domain'}; }
2891: if (!$stuname) { $stuname=$env{'user.name'}; }
2892: if ($domain eq 'public' && $stuname eq 'public') {
2893: $stuname=$ENV{'REMOTE_ADDR'};
2894: }
2895: my %returnhash;
2896: $namespace=~s/\//\_/g;
2897: $namespace=~s/\W//g;
2898: my %hash;
2899: my $path=$perlvar{'lonDaemons'}.'/tmp';
2900: if (tie(%hash,'GDBM_File',
2901: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
2902: &GDBM_READER(),0640)) {
2903: my $version=$hash{"version:$symb"};
2904: $returnhash{'version'}=$version;
2905: my $scope;
2906: for ($scope=1;$scope<=$version;$scope++) {
2907: my $vkeys=$hash{"$scope:keys:$symb"};
2908: my @keys=split(/:/,$vkeys);
2909: my $key;
2910: $returnhash{"$scope:keys"}=$vkeys;
2911: foreach $key (@keys) {
2912: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
2913: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
2914: }
2915: }
2916: if (!(untie(%hash))) {
2917: return "error:$!";
2918: }
2919: } else {
2920: return "error:$!";
2921: }
2922: return %returnhash;
2923: }
2924:
2925: # ----------------------------------------------------------------------- Store
2926:
2927: sub store {
2928: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
2929: my $home='';
2930:
2931: if ($stuname) { $home=&homeserver($stuname,$domain); }
2932:
2933: $symb=&symbclean($symb);
2934: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
2935:
2936: if (!$domain) { $domain=$env{'user.domain'}; }
2937: if (!$stuname) { $stuname=$env{'user.name'}; }
2938:
2939: &devalidate($symb,$stuname,$domain);
2940:
2941: $symb=escape($symb);
2942: if (!$namespace) {
2943: unless ($namespace=$env{'request.course.id'}) {
2944: return '';
2945: }
2946: }
2947: if (!$home) { $home=$env{'user.home'}; }
2948:
2949: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
2950: $$storehash{'host'}=$perlvar{'lonHostID'};
2951:
2952: my $namevalue='';
2953: foreach my $key (keys(%$storehash)) {
2954: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
2955: }
2956: $namevalue=~s/\&$//;
2957: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
2958: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
2959: }
2960:
2961: # -------------------------------------------------------------- Critical Store
2962:
2963: sub cstore {
2964: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
2965: my $home='';
2966:
2967: if ($stuname) { $home=&homeserver($stuname,$domain); }
2968:
2969: $symb=&symbclean($symb);
2970: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
2971:
2972: if (!$domain) { $domain=$env{'user.domain'}; }
2973: if (!$stuname) { $stuname=$env{'user.name'}; }
2974:
2975: &devalidate($symb,$stuname,$domain);
2976:
2977: $symb=escape($symb);
2978: if (!$namespace) {
2979: unless ($namespace=$env{'request.course.id'}) {
2980: return '';
2981: }
2982: }
2983: if (!$home) { $home=$env{'user.home'}; }
2984:
2985: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
2986: $$storehash{'host'}=$perlvar{'lonHostID'};
2987:
2988: my $namevalue='';
2989: foreach my $key (keys(%$storehash)) {
2990: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
2991: }
2992: $namevalue=~s/\&$//;
2993: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
2994: return critical
2995: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
2996: }
2997:
2998: # --------------------------------------------------------------------- Restore
2999:
3000: sub restore {
3001: my ($symb,$namespace,$domain,$stuname) = @_;
3002: my $home='';
3003:
3004: if ($stuname) { $home=&homeserver($stuname,$domain); }
3005:
3006: if (!$symb) {
3007: unless ($symb=escape(&symbread())) { return ''; }
3008: } else {
3009: $symb=&escape(&symbclean($symb));
3010: }
3011: if (!$namespace) {
3012: unless ($namespace=$env{'request.course.id'}) {
3013: return '';
3014: }
3015: }
3016: if (!$domain) { $domain=$env{'user.domain'}; }
3017: if (!$stuname) { $stuname=$env{'user.name'}; }
3018: if (!$home) { $home=$env{'user.home'}; }
3019: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
3020:
3021: my %returnhash=();
3022: foreach my $line (split(/\&/,$answer)) {
3023: my ($name,$value)=split(/\=/,$line);
3024: $returnhash{&unescape($name)}=&thaw_unescape($value);
3025: }
3026: my $version;
3027: for ($version=1;$version<=$returnhash{'version'};$version++) {
3028: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
3029: $returnhash{$item}=$returnhash{$version.':'.$item};
3030: }
3031: }
3032: return %returnhash;
3033: }
3034:
3035: # ---------------------------------------------------------- Course Description
3036:
3037: sub coursedescription {
3038: my ($courseid,$args)=@_;
3039: $courseid=~s/^\///;
3040: $courseid=~s/\_/\//g;
3041: my ($cdomain,$cnum)=split(/\//,$courseid);
3042: my $chome=&homeserver($cnum,$cdomain);
3043: my $normalid=$cdomain.'_'.$cnum;
3044: # need to always cache even if we get errors otherwise we keep
3045: # trying and trying and trying to get the course description.
3046: my %envhash=();
3047: my %returnhash=();
3048:
3049: my $expiretime=600;
3050: if ($env{'request.course.id'} eq $normalid) {
3051: $expiretime=120;
3052: }
3053:
3054: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
3055: if (!$args->{'freshen_cache'}
3056: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
3057: foreach my $key (keys(%env)) {
3058: next if ($key !~ /^\Q$prefix\E(.*)/);
3059: my ($setting) = $1;
3060: $returnhash{$setting} = $env{$key};
3061: }
3062: return %returnhash;
3063: }
3064:
3065: # get the data agin
3066: if (!$args->{'one_time'}) {
3067: $envhash{'course.'.$normalid.'.last_cache'}=time;
3068: }
3069:
3070: if ($chome ne 'no_host') {
3071: %returnhash=&dump('environment',$cdomain,$cnum);
3072: if (!exists($returnhash{'con_lost'})) {
3073: $returnhash{'home'}= $chome;
3074: $returnhash{'domain'} = $cdomain;
3075: $returnhash{'num'} = $cnum;
3076: if (!defined($returnhash{'type'})) {
3077: $returnhash{'type'} = 'Course';
3078: }
3079: while (my ($name,$value) = each %returnhash) {
3080: $envhash{'course.'.$normalid.'.'.$name}=$value;
3081: }
3082: $returnhash{'url'}=&clutter($returnhash{'url'});
3083: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
3084: $env{'user.name'}.'_'.$cdomain.'_'.$cnum;
3085: $envhash{'course.'.$normalid.'.home'}=$chome;
3086: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
3087: $envhash{'course.'.$normalid.'.num'}=$cnum;
3088: }
3089: }
3090: if (!$args->{'one_time'}) {
3091: &appenv(%envhash);
3092: }
3093: return %returnhash;
3094: }
3095:
3096: # -------------------------------------------------See if a user is privileged
3097:
3098: sub privileged {
3099: my ($username,$domain)=@_;
3100: my $rolesdump=&reply("dump:$domain:$username:roles",
3101: &homeserver($username,$domain));
3102: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return 0; }
3103: my $now=time;
3104: if ($rolesdump ne '') {
3105: foreach my $entry (split(/&/,$rolesdump)) {
3106: if ($entry!~/^rolesdef_/) {
3107: my ($area,$role)=split(/=/,$entry);
3108: $area=~s/\_\w\w$//;
3109: my ($trole,$tend,$tstart)=split(/_/,$role);
3110: if (($trole eq 'dc') || ($trole eq 'su')) {
3111: my $active=1;
3112: if ($tend) {
3113: if ($tend<$now) { $active=0; }
3114: }
3115: if ($tstart) {
3116: if ($tstart>$now) { $active=0; }
3117: }
3118: if ($active) { return 1; }
3119: }
3120: }
3121: }
3122: }
3123: return 0;
3124: }
3125:
3126: # -------------------------------------------------------- Get user privileges
3127:
3128: sub rolesinit {
3129: my ($domain,$username,$authhost)=@_;
3130: my $rolesdump=reply("dump:$domain:$username:roles",$authhost);
3131: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return ''; }
3132: my %allroles=();
3133: my %allgroups=();
3134: my $now=time;
3135: my %userroles = ('user.login.time' => $now);
3136: my $group_privs;
3137:
3138: if ($rolesdump ne '') {
3139: foreach my $entry (split(/&/,$rolesdump)) {
3140: if ($entry!~/^rolesdef_/) {
3141: my ($area,$role)=split(/=/,$entry);
3142: $area=~s/\_\w\w$//;
3143: my ($trole,$tend,$tstart,$group_privs);
3144: if ($role=~/^cr/) {
3145: if ($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
3146: ($trole,my $trest)=($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|);
3147: ($tend,$tstart)=split('_',$trest);
3148: } else {
3149: $trole=$role;
3150: }
3151: } elsif ($role =~ m|^gr/|) {
3152: ($trole,$tend,$tstart) = split(/_/,$role);
3153: ($trole,$group_privs) = split(/\//,$trole);
3154: $group_privs = &unescape($group_privs);
3155: } else {
3156: ($trole,$tend,$tstart)=split(/_/,$role);
3157: }
3158: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
3159: $username);
3160: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
3161: if (($tend!=0) && ($tend<$now)) { $trole=''; }
3162: if (($tstart!=0) && ($tstart>$now)) { $trole=''; }
3163: if (($area ne '') && ($trole ne '')) {
3164: my $spec=$trole.'.'.$area;
3165: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
3166: if ($trole =~ /^cr\//) {
3167: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
3168: } elsif ($trole eq 'gr') {
3169: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
3170: } else {
3171: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
3172: }
3173: }
3174: }
3175: }
3176: my ($author,$adv) = &set_userprivs(\%userroles,\%allroles,\%allgroups);
3177: $userroles{'user.adv'} = $adv;
3178: $userroles{'user.author'} = $author;
3179: $env{'user.adv'}=$adv;
3180: }
3181: return \%userroles;
3182: }
3183:
3184: sub set_arearole {
3185: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
3186: # log the associated role with the area
3187: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
3188: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
3189: }
3190:
3191: sub custom_roleprivs {
3192: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
3193: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
3194: my $homsvr=homeserver($rauthor,$rdomain);
3195: if (&hostname($homsvr) ne '') {
3196: my ($rdummy,$roledef)=
3197: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
3198: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
3199: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
3200: if (defined($syspriv)) {
3201: $$allroles{'cm./'}.=':'.$syspriv;
3202: $$allroles{$spec.'./'}.=':'.$syspriv;
3203: }
3204: if ($tdomain ne '') {
3205: if (defined($dompriv)) {
3206: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
3207: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
3208: }
3209: if (($trest ne '') && (defined($coursepriv))) {
3210: $$allroles{'cm.'.$area}.=':'.$coursepriv;
3211: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
3212: }
3213: }
3214: }
3215: }
3216: }
3217:
3218: sub group_roleprivs {
3219: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
3220: my $access = 1;
3221: my $now = time;
3222: if (($tend!=0) && ($tend<$now)) { $access = 0; }
3223: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
3224: if ($access) {
3225: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
3226: $$allgroups{$course}{$group} .=':'.$group_privs;
3227: }
3228: }
3229:
3230: sub standard_roleprivs {
3231: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
3232: if (defined($pr{$trole.':s'})) {
3233: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
3234: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
3235: }
3236: if ($tdomain ne '') {
3237: if (defined($pr{$trole.':d'})) {
3238: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
3239: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
3240: }
3241: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
3242: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
3243: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
3244: }
3245: }
3246: }
3247:
3248: sub set_userprivs {
3249: my ($userroles,$allroles,$allgroups) = @_;
3250: my $author=0;
3251: my $adv=0;
3252: my %grouproles = ();
3253: if (keys(%{$allgroups}) > 0) {
3254: foreach my $role (keys %{$allroles}) {
3255: my ($trole,$area,$sec,$extendedarea);
3256: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
3257: $trole = $1;
3258: $area = $2;
3259: $sec = $3;
3260: $extendedarea = $area.$sec;
3261: if (exists($$allgroups{$area})) {
3262: foreach my $group (keys(%{$$allgroups{$area}})) {
3263: my $spec = $trole.'.'.$extendedarea;
3264: $grouproles{$spec.'.'.$area.'/'.$group} =
3265: $$allgroups{$area}{$group};
3266: }
3267: }
3268: }
3269: }
3270: }
3271: foreach my $group (keys(%grouproles)) {
3272: $$allroles{$group} = $grouproles{$group};
3273: }
3274: foreach my $role (keys(%{$allroles})) {
3275: my %thesepriv;
3276: if (($role=~/^au/) || ($role=~/^ca/)) { $author=1; }
3277: foreach my $item (split(/:/,$$allroles{$role})) {
3278: if ($item ne '') {
3279: my ($privilege,$restrictions)=split(/&/,$item);
3280: if ($restrictions eq '') {
3281: $thesepriv{$privilege}='F';
3282: } elsif ($thesepriv{$privilege} ne 'F') {
3283: $thesepriv{$privilege}.=$restrictions;
3284: }
3285: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
3286: }
3287: }
3288: my $thesestr='';
3289: foreach my $priv (keys(%thesepriv)) {
3290: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
3291: }
3292: $userroles->{'user.priv.'.$role} = $thesestr;
3293: }
3294: return ($author,$adv);
3295: }
3296:
3297: # --------------------------------------------------------------- get interface
3298:
3299: sub get {
3300: my ($namespace,$storearr,$udomain,$uname)=@_;
3301: my $items='';
3302: foreach my $item (@$storearr) {
3303: $items.=&escape($item).'&';
3304: }
3305: $items=~s/\&$//;
3306: if (!$udomain) { $udomain=$env{'user.domain'}; }
3307: if (!$uname) { $uname=$env{'user.name'}; }
3308: my $uhome=&homeserver($uname,$udomain);
3309:
3310: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
3311: my @pairs=split(/\&/,$rep);
3312: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
3313: return @pairs;
3314: }
3315: my %returnhash=();
3316: my $i=0;
3317: foreach my $item (@$storearr) {
3318: $returnhash{$item}=&thaw_unescape($pairs[$i]);
3319: $i++;
3320: }
3321: return %returnhash;
3322: }
3323:
3324: # --------------------------------------------------------------- del interface
3325:
3326: sub del {
3327: my ($namespace,$storearr,$udomain,$uname)=@_;
3328: my $items='';
3329: foreach my $item (@$storearr) {
3330: $items.=&escape($item).'&';
3331: }
3332: $items=~s/\&$//;
3333: if (!$udomain) { $udomain=$env{'user.domain'}; }
3334: if (!$uname) { $uname=$env{'user.name'}; }
3335: my $uhome=&homeserver($uname,$udomain);
3336:
3337: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
3338: }
3339:
3340: # -------------------------------------------------------------- dump interface
3341:
3342: sub dump {
3343: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
3344: if (!$udomain) { $udomain=$env{'user.domain'}; }
3345: if (!$uname) { $uname=$env{'user.name'}; }
3346: my $uhome=&homeserver($uname,$udomain);
3347: if ($regexp) {
3348: $regexp=&escape($regexp);
3349: } else {
3350: $regexp='.';
3351: }
3352: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
3353: my @pairs=split(/\&/,$rep);
3354: my %returnhash=();
3355: foreach my $item (@pairs) {
3356: my ($key,$value)=split(/=/,$item,2);
3357: $key = &unescape($key);
3358: next if ($key =~ /^error: 2 /);
3359: $returnhash{$key}=&thaw_unescape($value);
3360: }
3361: return %returnhash;
3362: }
3363:
3364: # --------------------------------------------------------- dumpstore interface
3365:
3366: sub dumpstore {
3367: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
3368: if (!$udomain) { $udomain=$env{'user.domain'}; }
3369: if (!$uname) { $uname=$env{'user.name'}; }
3370: my $uhome=&homeserver($uname,$udomain);
3371: if ($regexp) {
3372: $regexp=&escape($regexp);
3373: } else {
3374: $regexp='.';
3375: }
3376: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
3377: my @pairs=split(/\&/,$rep);
3378: my %returnhash=();
3379: foreach my $item (@pairs) {
3380: my ($key,$value)=split(/=/,$item,2);
3381: next if ($key =~ /^error: 2 /);
3382: $returnhash{$key}=&thaw_unescape($value);
3383: }
3384: return %returnhash;
3385: }
3386:
3387: # -------------------------------------------------------------- keys interface
3388:
3389: sub getkeys {
3390: my ($namespace,$udomain,$uname)=@_;
3391: if (!$udomain) { $udomain=$env{'user.domain'}; }
3392: if (!$uname) { $uname=$env{'user.name'}; }
3393: my $uhome=&homeserver($uname,$udomain);
3394: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
3395: my @keyarray=();
3396: foreach my $key (split(/\&/,$rep)) {
3397: next if ($key =~ /^error: 2 /);
3398: push(@keyarray,&unescape($key));
3399: }
3400: return @keyarray;
3401: }
3402:
3403: # --------------------------------------------------------------- currentdump
3404: sub currentdump {
3405: my ($courseid,$sdom,$sname)=@_;
3406: $courseid = $env{'request.course.id'} if (! defined($courseid));
3407: $sdom = $env{'user.domain'} if (! defined($sdom));
3408: $sname = $env{'user.name'} if (! defined($sname));
3409: my $uhome = &homeserver($sname,$sdom);
3410: my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
3411: return if ($rep =~ /^(error:|no_such_host)/);
3412: #
3413: my %returnhash=();
3414: #
3415: if ($rep eq "unknown_cmd") {
3416: # an old lond will not know currentdump
3417: # Do a dump and make it look like a currentdump
3418: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
3419: return if ($tmp[0] =~ /^(error:|no_such_host)/);
3420: my %hash = @tmp;
3421: @tmp=();
3422: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
3423: } else {
3424: my @pairs=split(/\&/,$rep);
3425: foreach my $pair (@pairs) {
3426: my ($key,$value)=split(/=/,$pair,2);
3427: my ($symb,$param) = split(/:/,$key);
3428: $returnhash{&unescape($symb)}->{&unescape($param)} =
3429: &thaw_unescape($value);
3430: }
3431: }
3432: return %returnhash;
3433: }
3434:
3435: sub convert_dump_to_currentdump{
3436: my %hash = %{shift()};
3437: my %returnhash;
3438: # Code ripped from lond, essentially. The only difference
3439: # here is the unescaping done by lonnet::dump(). Conceivably
3440: # we might run in to problems with parameter names =~ /^v\./
3441: while (my ($key,$value) = each(%hash)) {
3442: my ($v,$symb,$param) = split(/:/,$key);
3443: $symb = &unescape($symb);
3444: $param = &unescape($param);
3445: next if ($v eq 'version' || $symb eq 'keys');
3446: next if (exists($returnhash{$symb}) &&
3447: exists($returnhash{$symb}->{$param}) &&
3448: $returnhash{$symb}->{'v.'.$param} > $v);
3449: $returnhash{$symb}->{$param}=$value;
3450: $returnhash{$symb}->{'v.'.$param}=$v;
3451: }
3452: #
3453: # Remove all of the keys in the hashes which keep track of
3454: # the version of the parameter.
3455: while (my ($symb,$param_hash) = each(%returnhash)) {
3456: # use a foreach because we are going to delete from the hash.
3457: foreach my $key (keys(%$param_hash)) {
3458: delete($param_hash->{$key}) if ($key =~ /^v\./);
3459: }
3460: }
3461: return \%returnhash;
3462: }
3463:
3464: # ------------------------------------------------------ critical inc interface
3465:
3466: sub cinc {
3467: return &inc(@_,'critical');
3468: }
3469:
3470: # --------------------------------------------------------------- inc interface
3471:
3472: sub inc {
3473: my ($namespace,$store,$udomain,$uname,$critical) = @_;
3474: if (!$udomain) { $udomain=$env{'user.domain'}; }
3475: if (!$uname) { $uname=$env{'user.name'}; }
3476: my $uhome=&homeserver($uname,$udomain);
3477: my $items='';
3478: if (! ref($store)) {
3479: # got a single value, so use that instead
3480: $items = &escape($store).'=&';
3481: } elsif (ref($store) eq 'SCALAR') {
3482: $items = &escape($$store).'=&';
3483: } elsif (ref($store) eq 'ARRAY') {
3484: $items = join('=&',map {&escape($_);} @{$store});
3485: } elsif (ref($store) eq 'HASH') {
3486: while (my($key,$value) = each(%{$store})) {
3487: $items.= &escape($key).'='.&escape($value).'&';
3488: }
3489: }
3490: $items=~s/\&$//;
3491: if ($critical) {
3492: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
3493: } else {
3494: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
3495: }
3496: }
3497:
3498: # --------------------------------------------------------------- put interface
3499:
3500: sub put {
3501: my ($namespace,$storehash,$udomain,$uname)=@_;
3502: if (!$udomain) { $udomain=$env{'user.domain'}; }
3503: if (!$uname) { $uname=$env{'user.name'}; }
3504: my $uhome=&homeserver($uname,$udomain);
3505: my $items='';
3506: foreach my $item (keys(%$storehash)) {
3507: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
3508: }
3509: $items=~s/\&$//;
3510: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
3511: }
3512:
3513: # ------------------------------------------------------------ newput interface
3514:
3515: sub newput {
3516: my ($namespace,$storehash,$udomain,$uname)=@_;
3517: if (!$udomain) { $udomain=$env{'user.domain'}; }
3518: if (!$uname) { $uname=$env{'user.name'}; }
3519: my $uhome=&homeserver($uname,$udomain);
3520: my $items='';
3521: foreach my $key (keys(%$storehash)) {
3522: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3523: }
3524: $items=~s/\&$//;
3525: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
3526: }
3527:
3528: # --------------------------------------------------------- putstore interface
3529:
3530: sub putstore {
3531: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
3532: if (!$udomain) { $udomain=$env{'user.domain'}; }
3533: if (!$uname) { $uname=$env{'user.name'}; }
3534: my $uhome=&homeserver($uname,$udomain);
3535: my $items='';
3536: foreach my $key (keys(%$storehash)) {
3537: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
3538: }
3539: $items=~s/\&$//;
3540: my $esc_symb=&escape($symb);
3541: my $esc_v=&escape($version);
3542: my $reply =
3543: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
3544: $uhome);
3545: if ($reply eq 'unknown_cmd') {
3546: # gfall back to way things use to be done
3547: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
3548: $uname);
3549: }
3550: return $reply;
3551: }
3552:
3553: sub old_putstore {
3554: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
3555: if (!$udomain) { $udomain=$env{'user.domain'}; }
3556: if (!$uname) { $uname=$env{'user.name'}; }
3557: my $uhome=&homeserver($uname,$udomain);
3558: my %newstorehash;
3559: foreach my $item (keys(%$storehash)) {
3560: my $key = $version.':'.&escape($symb).':'.$item;
3561: $newstorehash{$key} = $storehash->{$item};
3562: }
3563: my $items='';
3564: my %allitems = ();
3565: foreach my $item (keys(%newstorehash)) {
3566: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
3567: my $key = $1.':keys:'.$2;
3568: $allitems{$key} .= $3.':';
3569: }
3570: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
3571: }
3572: foreach my $item (keys(%allitems)) {
3573: $allitems{$item} =~ s/\:$//;
3574: $items.= $item.'='.$allitems{$item}.'&';
3575: }
3576: $items=~s/\&$//;
3577: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
3578: }
3579:
3580: # ------------------------------------------------------ critical put interface
3581:
3582: sub cput {
3583: my ($namespace,$storehash,$udomain,$uname)=@_;
3584: if (!$udomain) { $udomain=$env{'user.domain'}; }
3585: if (!$uname) { $uname=$env{'user.name'}; }
3586: my $uhome=&homeserver($uname,$udomain);
3587: my $items='';
3588: foreach my $item (keys(%$storehash)) {
3589: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
3590: }
3591: $items=~s/\&$//;
3592: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
3593: }
3594:
3595: # -------------------------------------------------------------- eget interface
3596:
3597: sub eget {
3598: my ($namespace,$storearr,$udomain,$uname)=@_;
3599: my $items='';
3600: foreach my $item (@$storearr) {
3601: $items.=&escape($item).'&';
3602: }
3603: $items=~s/\&$//;
3604: if (!$udomain) { $udomain=$env{'user.domain'}; }
3605: if (!$uname) { $uname=$env{'user.name'}; }
3606: my $uhome=&homeserver($uname,$udomain);
3607: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
3608: my @pairs=split(/\&/,$rep);
3609: my %returnhash=();
3610: my $i=0;
3611: foreach my $item (@$storearr) {
3612: $returnhash{$item}=&thaw_unescape($pairs[$i]);
3613: $i++;
3614: }
3615: return %returnhash;
3616: }
3617:
3618: # ------------------------------------------------------------ tmpput interface
3619: sub tmpput {
3620: my ($storehash,$server,$context)=@_;
3621: my $items='';
3622: foreach my $item (keys(%$storehash)) {
3623: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
3624: }
3625: $items=~s/\&$//;
3626: if (defined($context)) {
3627: $items .= ':'.&escape($context);
3628: }
3629: return &reply("tmpput:$items",$server);
3630: }
3631:
3632: # ------------------------------------------------------------ tmpget interface
3633: sub tmpget {
3634: my ($token,$server)=@_;
3635: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
3636: my $rep=&reply("tmpget:$token",$server);
3637: my %returnhash;
3638: foreach my $item (split(/\&/,$rep)) {
3639: my ($key,$value)=split(/=/,$item);
3640: $returnhash{&unescape($key)}=&thaw_unescape($value);
3641: }
3642: return %returnhash;
3643: }
3644:
3645: # ------------------------------------------------------------ tmpget interface
3646: sub tmpdel {
3647: my ($token,$server)=@_;
3648: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
3649: return &reply("tmpdel:$token",$server);
3650: }
3651:
3652: # -------------------------------------------------- portfolio access checking
3653:
3654: sub portfolio_access {
3655: my ($requrl) = @_;
3656: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
3657: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
3658: if ($result) {
3659: my %setters;
3660: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
3661: my ($startblock,$endblock) =
3662: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
3663: if ($startblock && $endblock) {
3664: return 'B';
3665: }
3666: } else {
3667: my ($startblock,$endblock) =
3668: &Apache::loncommon::blockcheck(\%setters,'port');
3669: if ($startblock && $endblock) {
3670: return 'B';
3671: }
3672: }
3673: }
3674: if ($result eq 'ok') {
3675: return 'F';
3676: } elsif ($result =~ /^[^:]+:guest_/) {
3677: return 'A';
3678: }
3679: return '';
3680: }
3681:
3682: sub get_portfolio_access {
3683: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
3684:
3685: if (!ref($access_hash)) {
3686: my $current_perms = &get_portfile_permissions($udom,$unum);
3687: my %access_controls = &get_access_controls($current_perms,$group,
3688: $file_name);
3689: $access_hash = $access_controls{$file_name};
3690: }
3691:
3692: my ($public,$guest,@domains,@users,@courses,@groups);
3693: my $now = time;
3694: if (ref($access_hash) eq 'HASH') {
3695: foreach my $key (keys(%{$access_hash})) {
3696: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
3697: if ($start > $now) {
3698: next;
3699: }
3700: if ($end && $end<$now) {
3701: next;
3702: }
3703: if ($scope eq 'public') {
3704: $public = $key;
3705: last;
3706: } elsif ($scope eq 'guest') {
3707: $guest = $key;
3708: } elsif ($scope eq 'domains') {
3709: push(@domains,$key);
3710: } elsif ($scope eq 'users') {
3711: push(@users,$key);
3712: } elsif ($scope eq 'course') {
3713: push(@courses,$key);
3714: } elsif ($scope eq 'group') {
3715: push(@groups,$key);
3716: }
3717: }
3718: if ($public) {
3719: return 'ok';
3720: }
3721: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
3722: if ($guest) {
3723: return $guest;
3724: }
3725: } else {
3726: if (@domains > 0) {
3727: foreach my $domkey (@domains) {
3728: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
3729: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
3730: return 'ok';
3731: }
3732: }
3733: }
3734: }
3735: if (@users > 0) {
3736: foreach my $userkey (@users) {
3737: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
3738: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
3739: if (ref($item) eq 'HASH') {
3740: if (($item->{'uname'} eq $env{'user.name'}) &&
3741: ($item->{'udom'} eq $env{'user.domain'})) {
3742: return 'ok';
3743: }
3744: }
3745: }
3746: }
3747: }
3748: }
3749: my %roleshash;
3750: my @courses_and_groups = @courses;
3751: push(@courses_and_groups,@groups);
3752: if (@courses_and_groups > 0) {
3753: my (%allgroups,%allroles);
3754: my ($start,$end,$role,$sec,$group);
3755: foreach my $envkey (%env) {
3756: if ($envkey =~ m-^user\.role\.(gr|cc|in|ta|ep|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
3757: my $cid = $2.'_'.$3;
3758: if ($1 eq 'gr') {
3759: $group = $4;
3760: $allgroups{$cid}{$group} = $env{$envkey};
3761: } else {
3762: if ($4 eq '') {
3763: $sec = 'none';
3764: } else {
3765: $sec = $4;
3766: }
3767: $allroles{$cid}{$1}{$sec} = $env{$envkey};
3768: }
3769: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
3770: my $cid = $2.'_'.$3;
3771: if ($4 eq '') {
3772: $sec = 'none';
3773: } else {
3774: $sec = $4;
3775: }
3776: $allroles{$cid}{$1}{$sec} = $env{$envkey};
3777: }
3778: }
3779: if (keys(%allroles) == 0) {
3780: return;
3781: }
3782: foreach my $key (@courses_and_groups) {
3783: my %content = %{$$access_hash{$key}};
3784: my $cnum = $content{'number'};
3785: my $cdom = $content{'domain'};
3786: my $cid = $cdom.'_'.$cnum;
3787: if (!exists($allroles{$cid})) {
3788: next;
3789: }
3790: foreach my $role_id (keys(%{$content{'roles'}})) {
3791: my @sections = @{$content{'roles'}{$role_id}{'section'}};
3792: my @groups = @{$content{'roles'}{$role_id}{'group'}};
3793: my @status = @{$content{'roles'}{$role_id}{'access'}};
3794: my @roles = @{$content{'roles'}{$role_id}{'role'}};
3795: foreach my $role (keys(%{$allroles{$cid}})) {
3796: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
3797: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
3798: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
3799: if (grep/^all$/,@sections) {
3800: return 'ok';
3801: } else {
3802: if (grep/^$sec$/,@sections) {
3803: return 'ok';
3804: }
3805: }
3806: }
3807: }
3808: if (keys(%{$allgroups{$cid}}) == 0) {
3809: if (grep/^none$/,@groups) {
3810: return 'ok';
3811: }
3812: } else {
3813: if (grep/^all$/,@groups) {
3814: return 'ok';
3815: }
3816: foreach my $group (keys(%{$allgroups{$cid}})) {
3817: if (grep/^$group$/,@groups) {
3818: return 'ok';
3819: }
3820: }
3821: }
3822: }
3823: }
3824: }
3825: }
3826: }
3827: if ($guest) {
3828: return $guest;
3829: }
3830: }
3831: }
3832: return;
3833: }
3834:
3835: sub course_group_datechecker {
3836: my ($dates,$now,$status) = @_;
3837: my ($start,$end) = split(/\./,$dates);
3838: if (!$start && !$end) {
3839: return 'ok';
3840: }
3841: if (grep/^active$/,@{$status}) {
3842: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
3843: return 'ok';
3844: }
3845: }
3846: if (grep/^previous$/,@{$status}) {
3847: if ($end > $now ) {
3848: return 'ok';
3849: }
3850: }
3851: if (grep/^future$/,@{$status}) {
3852: if ($start > $now) {
3853: return 'ok';
3854: }
3855: }
3856: return;
3857: }
3858:
3859: sub parse_portfolio_url {
3860: my ($url) = @_;
3861:
3862: my ($type,$udom,$unum,$group,$file_name);
3863:
3864: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
3865: $type = 1;
3866: $udom = $1;
3867: $unum = $2;
3868: $file_name = $3;
3869: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
3870: $type = 2;
3871: $udom = $1;
3872: $unum = $2;
3873: $group = $3;
3874: $file_name = $3.'/'.$4;
3875: }
3876: if (wantarray) {
3877: return ($type,$udom,$unum,$file_name,$group);
3878: }
3879: return $type;
3880: }
3881:
3882: sub is_portfolio_url {
3883: my ($url) = @_;
3884: return scalar(&parse_portfolio_url($url));
3885: }
3886:
3887: sub is_portfolio_file {
3888: my ($file) = @_;
3889: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
3890: return 1;
3891: }
3892: return;
3893: }
3894:
3895:
3896: # ---------------------------------------------- Custom access rule evaluation
3897:
3898: sub customaccess {
3899: my ($priv,$uri)=@_;
3900: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
3901: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
3902: $udom = &LONCAPA::clean_domain($udom);
3903: $ucrs = &LONCAPA::clean_username($ucrs);
3904: my $access=0;
3905: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
3906: my ($effect,$realm,$role,$type)=split(/\:/,$right);
3907: if ($type eq 'user') {
3908: foreach my $scope (split(/\s*\,\s*/,$realm)) {
3909: my ($tdom,$tuname)=split(m{/},$scope);
3910: if ($tdom) {
3911: if ($tdom ne $env{'user.domain'}) { next; }
3912: }
3913: if ($tuname) {
3914: if ($tuname ne $env{'user.name'}) { next; }
3915: }
3916: $access=($effect eq 'allow');
3917: last;
3918: }
3919: } else {
3920: if ($role) {
3921: if ($role ne $urole) { next; }
3922: }
3923: foreach my $scope (split(/\s*\,\s*/,$realm)) {
3924: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
3925: if ($tdom) {
3926: if ($tdom ne $udom) { next; }
3927: }
3928: if ($tcrs) {
3929: if ($tcrs ne $ucrs) { next; }
3930: }
3931: if ($tsec) {
3932: if ($tsec ne $usec) { next; }
3933: }
3934: $access=($effect eq 'allow');
3935: last;
3936: }
3937: if ($realm eq '' && $role eq '') {
3938: $access=($effect eq 'allow');
3939: }
3940: }
3941: }
3942: return $access;
3943: }
3944:
3945: # ------------------------------------------------- Check for a user privilege
3946:
3947: sub allowed {
3948: my ($priv,$uri,$symb,$role)=@_;
3949: my $ver_orguri=$uri;
3950: $uri=&deversion($uri);
3951: my $orguri=$uri;
3952: $uri=&declutter($uri);
3953:
3954: if ($priv eq 'evb') {
3955: # Evade communication block restrictions for specified role in a course
3956: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
3957: return $1;
3958: } else {
3959: return;
3960: }
3961: }
3962:
3963: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
3964: # Free bre access to adm and meta resources
3965: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
3966: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
3967: && ($priv eq 'bre')) {
3968: return 'F';
3969: }
3970:
3971: # Free bre access to user's own portfolio contents
3972: my ($space,$domain,$name,@dir)=split('/',$uri);
3973: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
3974: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
3975: my %setters;
3976: my ($startblock,$endblock) =
3977: &Apache::loncommon::blockcheck(\%setters,'port');
3978: if ($startblock && $endblock) {
3979: return 'B';
3980: } else {
3981: return 'F';
3982: }
3983: }
3984:
3985: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
3986: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
3987: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
3988: if (exists($env{'request.course.id'})) {
3989: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
3990: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
3991: if (($domain eq $cdom) && ($name eq $cnum)) {
3992: my $courseprivid=$env{'request.course.id'};
3993: $courseprivid=~s/\_/\//;
3994: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
3995: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
3996: return $1;
3997: } else {
3998: if ($env{'request.course.sec'}) {
3999: $courseprivid.='/'.$env{'request.course.sec'};
4000: }
4001: if ($env{'user.priv.'.$env{'request.role'}.'./'.
4002: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
4003: return $2;
4004: }
4005: }
4006: }
4007: }
4008: }
4009:
4010: # Free bre to public access
4011:
4012: if ($priv eq 'bre') {
4013: my $copyright=&metadata($uri,'copyright');
4014: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
4015: return 'F';
4016: }
4017: if ($copyright eq 'priv') {
4018: $uri=~/([^\/]+)\/([^\/]+)\//;
4019: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
4020: return '';
4021: }
4022: }
4023: if ($copyright eq 'domain') {
4024: $uri=~/([^\/]+)\/([^\/]+)\//;
4025: unless (($env{'user.domain'} eq $1) ||
4026: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
4027: return '';
4028: }
4029: }
4030: if ($env{'request.role'}=~ /li\.\//) {
4031: # Library role, so allow browsing of resources in this domain.
4032: return 'F';
4033: }
4034: if ($copyright eq 'custom') {
4035: unless (&customaccess($priv,$uri)) { return ''; }
4036: }
4037: }
4038: # Domain coordinator is trying to create a course
4039: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
4040: # uri is the requested domain in this case.
4041: # comparison to 'request.role.domain' shows if the user has selected
4042: # a role of dc for the domain in question.
4043: return 'F' if ($uri eq $env{'request.role.domain'});
4044: }
4045:
4046: my $thisallowed='';
4047: my $statecond=0;
4048: my $courseprivid='';
4049:
4050: # Course
4051:
4052: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
4053: $thisallowed.=$1;
4054: }
4055:
4056: # Domain
4057:
4058: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
4059: =~/\Q$priv\E\&([^\:]*)/) {
4060: $thisallowed.=$1;
4061: }
4062:
4063: # Course: uri itself is a course
4064: my $courseuri=$uri;
4065: $courseuri=~s/\_(\d)/\/$1/;
4066: $courseuri=~s/^([^\/])/\/$1/;
4067:
4068: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
4069: =~/\Q$priv\E\&([^\:]*)/) {
4070: $thisallowed.=$1;
4071: }
4072:
4073: # URI is an uploaded document for this course, default permissions don't matter
4074: # not allowing 'edit' access (editupload) to uploaded course docs
4075: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
4076: $thisallowed='';
4077: my ($match)=&is_on_map($uri);
4078: if ($match) {
4079: if ($env{'user.priv.'.$env{'request.role'}.'./'}
4080: =~/\Q$priv\E\&([^\:]*)/) {
4081: $thisallowed.=$1;
4082: }
4083: } else {
4084: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
4085: if ($refuri) {
4086: if ($refuri =~ m|^/adm/|) {
4087: $thisallowed='F';
4088: } else {
4089: $refuri=&declutter($refuri);
4090: my ($match) = &is_on_map($refuri);
4091: if ($match) {
4092: $thisallowed='F';
4093: }
4094: }
4095: }
4096: }
4097: }
4098:
4099: if ($priv eq 'bre'
4100: && $thisallowed ne 'F'
4101: && $thisallowed ne '2'
4102: && &is_portfolio_url($uri)) {
4103: $thisallowed = &portfolio_access($uri);
4104: }
4105:
4106: # Full access at system, domain or course-wide level? Exit.
4107:
4108: if ($thisallowed=~/F/) {
4109: return 'F';
4110: }
4111:
4112: # If this is generating or modifying users, exit with special codes
4113:
4114: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
4115: if (($priv eq 'cca') || ($priv eq 'caa')) {
4116: my ($audom,$auname)=split('/',$uri);
4117: # no author name given, so this just checks on the general right to make a co-author in this domain
4118: unless ($auname) { return $thisallowed; }
4119: # an author name is given, so we are about to actually make a co-author for a certain account
4120: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
4121: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
4122: ($audom ne $env{'request.role.domain'}))) { return ''; }
4123: }
4124: return $thisallowed;
4125: }
4126: #
4127: # Gathered so far: system, domain and course wide privileges
4128: #
4129: # Course: See if uri or referer is an individual resource that is part of
4130: # the course
4131:
4132: if ($env{'request.course.id'}) {
4133:
4134: $courseprivid=$env{'request.course.id'};
4135: if ($env{'request.course.sec'}) {
4136: $courseprivid.='/'.$env{'request.course.sec'};
4137: }
4138: $courseprivid=~s/\_/\//;
4139: my $checkreferer=1;
4140: my ($match,$cond)=&is_on_map($uri);
4141: if ($match) {
4142: $statecond=$cond;
4143: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
4144: =~/\Q$priv\E\&([^\:]*)/) {
4145: $thisallowed.=$1;
4146: $checkreferer=0;
4147: }
4148: }
4149:
4150: if ($checkreferer) {
4151: my $refuri=$env{'httpref.'.$orguri};
4152: unless ($refuri) {
4153: foreach my $key (keys(%env)) {
4154: if ($key=~/^httpref\..*\*/) {
4155: my $pattern=$key;
4156: $pattern=~s/^httpref\.\/res\///;
4157: $pattern=~s/\*/\[\^\/\]\+/g;
4158: $pattern=~s/\//\\\//g;
4159: if ($orguri=~/$pattern/) {
4160: $refuri=$env{$key};
4161: }
4162: }
4163: }
4164: }
4165:
4166: if ($refuri) {
4167: $refuri=&declutter($refuri);
4168: my ($match,$cond)=&is_on_map($refuri);
4169: if ($match) {
4170: my $refstatecond=$cond;
4171: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
4172: =~/\Q$priv\E\&([^\:]*)/) {
4173: $thisallowed.=$1;
4174: $uri=$refuri;
4175: $statecond=$refstatecond;
4176: }
4177: }
4178: }
4179: }
4180: }
4181:
4182: #
4183: # Gathered now: all privileges that could apply, and condition number
4184: #
4185: #
4186: # Full or no access?
4187: #
4188:
4189: if ($thisallowed=~/F/) {
4190: return 'F';
4191: }
4192:
4193: unless ($thisallowed) {
4194: return '';
4195: }
4196:
4197: # Restrictions exist, deal with them
4198: #
4199: # C:according to course preferences
4200: # R:according to resource settings
4201: # L:unless locked
4202: # X:according to user session state
4203: #
4204:
4205: # Possibly locked functionality, check all courses
4206: # Locks might take effect only after 10 minutes cache expiration for other
4207: # courses, and 2 minutes for current course
4208:
4209: my $envkey;
4210: if ($thisallowed=~/L/) {
4211: foreach $envkey (keys %env) {
4212: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
4213: my $courseid=$2;
4214: my $roleid=$1.'.'.$2;
4215: $courseid=~s/^\///;
4216: my $expiretime=600;
4217: if ($env{'request.role'} eq $roleid) {
4218: $expiretime=120;
4219: }
4220: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
4221: my $prefix='course.'.$cdom.'_'.$cnum.'.';
4222: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
4223: &coursedescription($courseid,{'freshen_cache' => 1});
4224: }
4225: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
4226: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
4227: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
4228: &log($env{'user.domain'},$env{'user.name'},
4229: $env{'user.home'},
4230: 'Locked by res: '.$priv.' for '.$uri.' due to '.
4231: $cdom.'/'.$cnum.'/'.$csec.' expire '.
4232: $env{$prefix.'priv.'.$priv.'.lock.expire'});
4233: return '';
4234: }
4235: }
4236: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
4237: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
4238: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
4239: &log($env{'user.domain'},$env{'user.name'},
4240: $env{'user.home'},
4241: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
4242: $cdom.'/'.$cnum.'/'.$csec.' expire '.
4243: $env{$prefix.'priv.'.$priv.'.lock.expire'});
4244: return '';
4245: }
4246: }
4247: }
4248: }
4249: }
4250:
4251: #
4252: # Rest of the restrictions depend on selected course
4253: #
4254:
4255: unless ($env{'request.course.id'}) {
4256: if ($thisallowed eq 'A') {
4257: return 'A';
4258: } elsif ($thisallowed eq 'B') {
4259: return 'B';
4260: } else {
4261: return '1';
4262: }
4263: }
4264:
4265: #
4266: # Now user is definitely in a course
4267: #
4268:
4269:
4270: # Course preferences
4271:
4272: if ($thisallowed=~/C/) {
4273: my $rolecode=(split(/\./,$env{'request.role'}))[0];
4274: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
4275: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
4276: =~/\Q$rolecode\E/) {
4277: if ($priv ne 'pch') {
4278: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
4279: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
4280: $env{'request.course.id'});
4281: }
4282: return '';
4283: }
4284:
4285: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
4286: =~/\Q$unamedom\E/) {
4287: if ($priv ne 'pch') {
4288: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
4289: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
4290: $env{'request.course.id'});
4291: }
4292: return '';
4293: }
4294: }
4295:
4296: # Resource preferences
4297:
4298: if ($thisallowed=~/R/) {
4299: my $rolecode=(split(/\./,$env{'request.role'}))[0];
4300: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
4301: if ($priv ne 'pch') {
4302: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
4303: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
4304: }
4305: return '';
4306: }
4307: }
4308:
4309: # Restricted by state or randomout?
4310:
4311: if ($thisallowed=~/X/) {
4312: if ($env{'acc.randomout'}) {
4313: if (!$symb) { $symb=&symbread($uri,1); }
4314: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
4315: return '';
4316: }
4317: }
4318: if (&condval($statecond)) {
4319: return '2';
4320: } else {
4321: return '';
4322: }
4323: }
4324:
4325: if ($thisallowed eq 'A') {
4326: return 'A';
4327: } elsif ($thisallowed eq 'B') {
4328: return 'B';
4329: }
4330: return 'F';
4331: }
4332:
4333: sub split_uri_for_cond {
4334: my $uri=&deversion(&declutter(shift));
4335: my @uriparts=split(/\//,$uri);
4336: my $filename=pop(@uriparts);
4337: my $pathname=join('/',@uriparts);
4338: return ($pathname,$filename);
4339: }
4340: # --------------------------------------------------- Is a resource on the map?
4341:
4342: sub is_on_map {
4343: my ($pathname,$filename) = &split_uri_for_cond(shift);
4344: #Trying to find the conditional for the file
4345: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
4346: /\&\Q$filename\E\:([\d\|]+)\&/);
4347: if ($match) {
4348: return (1,$1);
4349: } else {
4350: return (0,0);
4351: }
4352: }
4353:
4354: # --------------------------------------------------------- Get symb from alias
4355:
4356: sub get_symb_from_alias {
4357: my $symb=shift;
4358: my ($map,$resid,$url)=&decode_symb($symb);
4359: # Already is a symb
4360: if ($url) { return $symb; }
4361: # Must be an alias
4362: my $aliassymb='';
4363: my %bighash;
4364: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
4365: &GDBM_READER(),0640)) {
4366: my $rid=$bighash{'mapalias_'.$symb};
4367: if ($rid) {
4368: my ($mapid,$resid)=split(/\./,$rid);
4369: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
4370: $resid,$bighash{'src_'.$rid});
4371: }
4372: untie %bighash;
4373: }
4374: return $aliassymb;
4375: }
4376:
4377: # ----------------------------------------------------------------- Define Role
4378:
4379: sub definerole {
4380: if (allowed('mcr','/')) {
4381: my ($rolename,$sysrole,$domrole,$courole)=@_;
4382: foreach my $role (split(':',$sysrole)) {
4383: my ($crole,$cqual)=split(/\&/,$role);
4384: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
4385: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
4386: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
4387: return "refused:s:$crole&$cqual";
4388: }
4389: }
4390: }
4391: foreach my $role (split(':',$domrole)) {
4392: my ($crole,$cqual)=split(/\&/,$role);
4393: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
4394: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
4395: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
4396: return "refused:d:$crole&$cqual";
4397: }
4398: }
4399: }
4400: foreach my $role (split(':',$courole)) {
4401: my ($crole,$cqual)=split(/\&/,$role);
4402: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
4403: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
4404: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
4405: return "refused:c:$crole&$cqual";
4406: }
4407: }
4408: }
4409: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
4410: "$env{'user.domain'}:$env{'user.name'}:".
4411: "rolesdef_$rolename=".
4412: escape($sysrole.'_'.$domrole.'_'.$courole);
4413: return reply($command,$env{'user.home'});
4414: } else {
4415: return 'refused';
4416: }
4417: }
4418:
4419: # ---------------- Make a metadata query against the network of library servers
4420:
4421: sub metadata_query {
4422: my ($query,$custom,$customshow,$server_array)=@_;
4423: my %rhash;
4424: my %libserv = &all_library();
4425: my @server_list = (defined($server_array) ? @$server_array
4426: : keys(%libserv) );
4427: for my $server (@server_list) {
4428: unless ($custom or $customshow) {
4429: my $reply=&reply("querysend:".&escape($query),$server);
4430: $rhash{$server}=$reply;
4431: }
4432: else {
4433: my $reply=&reply("querysend:".&escape($query).':'.
4434: &escape($custom).':'.&escape($customshow),
4435: $server);
4436: $rhash{$server}=$reply;
4437: }
4438: }
4439: return \%rhash;
4440: }
4441:
4442: # ----------------------------------------- Send log queries and wait for reply
4443:
4444: sub log_query {
4445: my ($uname,$udom,$query,%filters)=@_;
4446: my $uhome=&homeserver($uname,$udom);
4447: if ($uhome eq 'no_host') { return 'error: no_host'; }
4448: my $uhost=&hostname($uhome);
4449: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
4450: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
4451: $uhome);
4452: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
4453: return get_query_reply($queryid);
4454: }
4455:
4456: # -------------------------- Update MySQL table for portfolio file
4457:
4458: sub update_portfolio_table {
4459: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
4460: my $homeserver = &homeserver($uname,$udom);
4461: my $queryid=
4462: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
4463: ':'.&escape($file_name).':'.$action,$homeserver);
4464: my $reply = &get_query_reply($queryid);
4465: return $reply;
4466: }
4467:
4468: # -------------------------- Update MySQL allusers table
4469:
4470: sub update_allusers_table {
4471: my ($uname,$udom,$names) = @_;
4472: my $homeserver = &homeserver($uname,$udom);
4473: my $queryid=
4474: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
4475: 'lastname='.&escape($names->{'lastname'}).'%%'.
4476: 'firstname='.&escape($names->{'firstname'}).'%%'.
4477: 'middlename='.&escape($names->{'middlename'}).'%%'.
4478: 'generation='.&escape($names->{'generation'}).'%%'.
4479: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
4480: 'id='.&escape($names->{'id'}),$homeserver);
4481: my $reply = &get_query_reply($queryid);
4482: return $reply;
4483: }
4484:
4485: # ------- Request retrieval of institutional classlists for course(s)
4486:
4487: sub fetch_enrollment_query {
4488: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
4489: my $homeserver;
4490: my $maxtries = 1;
4491: if ($context eq 'automated') {
4492: $homeserver = $perlvar{'lonHostID'};
4493: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
4494: } else {
4495: $homeserver = &homeserver($cnum,$dom);
4496: }
4497: my $host=&hostname($homeserver);
4498: my $cmd = '';
4499: foreach my $affiliate (keys %{$affiliatesref}) {
4500: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
4501: }
4502: $cmd =~ s/%%$//;
4503: $cmd = &escape($cmd);
4504: my $query = 'fetchenrollment';
4505: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
4506: unless ($queryid=~/^\Q$host\E\_/) {
4507: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
4508: return 'error: '.$queryid;
4509: }
4510: my $reply = &get_query_reply($queryid);
4511: my $tries = 1;
4512: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
4513: $reply = &get_query_reply($queryid);
4514: $tries ++;
4515: }
4516: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
4517: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
4518: } else {
4519: my @responses = split(/:/,$reply);
4520: if ($homeserver eq $perlvar{'lonHostID'}) {
4521: foreach my $line (@responses) {
4522: my ($key,$value) = split(/=/,$line,2);
4523: $$replyref{$key} = $value;
4524: }
4525: } else {
4526: my $pathname = $perlvar{'lonDaemons'}.'/tmp';
4527: foreach my $line (@responses) {
4528: my ($key,$value) = split(/=/,$line);
4529: $$replyref{$key} = $value;
4530: if ($value > 0) {
4531: foreach my $item (@{$$affiliatesref{$key}}) {
4532: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
4533: my $destname = $pathname.'/'.$filename;
4534: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
4535: if ($xml_classlist =~ /^error/) {
4536: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
4537: } else {
4538: if ( open(FILE,">$destname") ) {
4539: print FILE &unescape($xml_classlist);
4540: close(FILE);
4541: } else {
4542: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
4543: }
4544: }
4545: }
4546: }
4547: }
4548: }
4549: return 'ok';
4550: }
4551: return 'error';
4552: }
4553:
4554: sub get_query_reply {
4555: my $queryid=shift;
4556: my $replyfile=$perlvar{'lonDaemons'}.'/tmp/'.$queryid;
4557: my $reply='';
4558: for (1..100) {
4559: sleep 2;
4560: if (-e $replyfile.'.end') {
4561: if (open(my $fh,$replyfile)) {
4562: $reply = join('',<$fh>);
4563: close($fh);
4564: } else { return 'error: reply_file_error'; }
4565: return &unescape($reply);
4566: }
4567: }
4568: return 'timeout:'.$queryid;
4569: }
4570:
4571: sub courselog_query {
4572: #
4573: # possible filters:
4574: # url: url or symb
4575: # username
4576: # domain
4577: # action: view, submit, grade
4578: # start: timestamp
4579: # end: timestamp
4580: #
4581: my (%filters)=@_;
4582: unless ($env{'request.course.id'}) { return 'no_course'; }
4583: if ($filters{'url'}) {
4584: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
4585: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
4586: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
4587: }
4588: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
4589: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4590: return &log_query($cname,$cdom,'courselog',%filters);
4591: }
4592:
4593: sub userlog_query {
4594: #
4595: # possible filters:
4596: # action: log check role
4597: # start: timestamp
4598: # end: timestamp
4599: #
4600: my ($uname,$udom,%filters)=@_;
4601: return &log_query($uname,$udom,'userlog',%filters);
4602: }
4603:
4604: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
4605:
4606: sub auto_run {
4607: my ($cnum,$cdom) = @_;
4608: my $response = 0;
4609: my $settings;
4610: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
4611: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
4612: $settings = $domconfig{'autoenroll'};
4613: if ($settings->{'run'} eq '1') {
4614: $response = 1;
4615: }
4616: } else {
4617: my $homeserver = &homeserver($cnum,$cdom);
4618: $response = &reply('autorun:'.$cdom,$homeserver);
4619: }
4620: return $response;
4621: }
4622:
4623: sub auto_get_sections {
4624: my ($cnum,$cdom,$inst_coursecode) = @_;
4625: my $homeserver = &homeserver($cnum,$cdom);
4626: my @secs = ();
4627: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
4628: unless ($response eq 'refused') {
4629: @secs = split(/:/,$response);
4630: }
4631: return @secs;
4632: }
4633:
4634: sub auto_new_course {
4635: my ($cnum,$cdom,$inst_course_id,$owner) = @_;
4636: my $homeserver = &homeserver($cnum,$cdom);
4637: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.$owner.':'.$cdom,$homeserver));
4638: return $response;
4639: }
4640:
4641: sub auto_validate_courseID {
4642: my ($cnum,$cdom,$inst_course_id) = @_;
4643: my $homeserver = &homeserver($cnum,$cdom);
4644: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
4645: return $response;
4646: }
4647:
4648: sub auto_create_password {
4649: my ($cnum,$cdom,$authparam,$udom) = @_;
4650: my ($homeserver,$response);
4651: my $create_passwd = 0;
4652: my $authchk = '';
4653: if ($udom =~ /^$match_domain$/) {
4654: $homeserver = &domain($udom,'primary');
4655: }
4656: if ($homeserver eq '') {
4657: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
4658: $homeserver = &homeserver($cnum,$cdom);
4659: }
4660: }
4661: if ($homeserver eq '') {
4662: $authchk = 'nodomain';
4663: } else {
4664: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
4665: if ($response eq 'refused') {
4666: $authchk = 'refused';
4667: } else {
4668: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
4669: }
4670: }
4671: return ($authparam,$create_passwd,$authchk);
4672: }
4673:
4674: sub auto_photo_permission {
4675: my ($cnum,$cdom,$students) = @_;
4676: my $homeserver = &homeserver($cnum,$cdom);
4677: my ($outcome,$perm_reqd,$conditions) =
4678: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
4679: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
4680: return (undef,undef);
4681: }
4682: return ($outcome,$perm_reqd,$conditions);
4683: }
4684:
4685: sub auto_checkphotos {
4686: my ($uname,$udom,$pid) = @_;
4687: my $homeserver = &homeserver($uname,$udom);
4688: my ($result,$resulttype);
4689: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
4690: &escape($uname).':'.&escape($pid),
4691: $homeserver));
4692: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
4693: return (undef,undef);
4694: }
4695: if ($outcome) {
4696: ($result,$resulttype) = split(/:/,$outcome);
4697: }
4698: return ($result,$resulttype);
4699: }
4700:
4701: sub auto_photochoice {
4702: my ($cnum,$cdom) = @_;
4703: my $homeserver = &homeserver($cnum,$cdom);
4704: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
4705: &escape($cdom),
4706: $homeserver)));
4707: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
4708: return (undef,undef);
4709: }
4710: return ($update,$comment);
4711: }
4712:
4713: sub auto_photoupdate {
4714: my ($affiliatesref,$dom,$cnum,$photo) = @_;
4715: my $homeserver = &homeserver($cnum,$dom);
4716: my $host=&hostname($homeserver);
4717: my $cmd = '';
4718: my $maxtries = 1;
4719: foreach my $affiliate (keys(%{$affiliatesref})) {
4720: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
4721: }
4722: $cmd =~ s/%%$//;
4723: $cmd = &escape($cmd);
4724: my $query = 'institutionalphotos';
4725: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
4726: unless ($queryid=~/^\Q$host\E\_/) {
4727: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
4728: return 'error: '.$queryid;
4729: }
4730: my $reply = &get_query_reply($queryid);
4731: my $tries = 1;
4732: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
4733: $reply = &get_query_reply($queryid);
4734: $tries ++;
4735: }
4736: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
4737: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
4738: } else {
4739: my @responses = split(/:/,$reply);
4740: my $outcome = shift(@responses);
4741: foreach my $item (@responses) {
4742: my ($key,$value) = split(/=/,$item);
4743: $$photo{$key} = $value;
4744: }
4745: return $outcome;
4746: }
4747: return 'error';
4748: }
4749:
4750: sub auto_instcode_format {
4751: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
4752: $cat_order) = @_;
4753: my $courses = '';
4754: my @homeservers;
4755: if ($caller eq 'global') {
4756: my %servers = &get_servers($codedom,'library');
4757: foreach my $tryserver (keys(%servers)) {
4758: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
4759: push(@homeservers,$tryserver);
4760: }
4761: }
4762: } else {
4763: push(@homeservers,&homeserver($caller,$codedom));
4764: }
4765: foreach my $code (keys(%{$instcodes})) {
4766: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
4767: }
4768: chop($courses);
4769: my $ok_response = 0;
4770: my $response;
4771: while (@homeservers > 0 && $ok_response == 0) {
4772: my $server = shift(@homeservers);
4773: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
4774: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
4775: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
4776: split(/:/,$response);
4777: %{$codes} = (%{$codes},&str2hash($codes_str));
4778: push(@{$codetitles},&str2array($codetitles_str));
4779: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
4780: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
4781: $ok_response = 1;
4782: }
4783: }
4784: if ($ok_response) {
4785: return 'ok';
4786: } else {
4787: return $response;
4788: }
4789: }
4790:
4791: sub auto_instcode_defaults {
4792: my ($domain,$returnhash,$code_order) = @_;
4793: my @homeservers;
4794:
4795: my %servers = &get_servers($domain,'library');
4796: foreach my $tryserver (keys(%servers)) {
4797: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
4798: push(@homeservers,$tryserver);
4799: }
4800: }
4801:
4802: my $response;
4803: foreach my $server (@homeservers) {
4804: $response=&reply('autoinstcodedefaults:'.$domain,$server);
4805: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
4806:
4807: foreach my $pair (split(/\&/,$response)) {
4808: my ($name,$value)=split(/\=/,$pair);
4809: if ($name eq 'code_order') {
4810: @{$code_order} = split(/\&/,&unescape($value));
4811: } else {
4812: $returnhash->{&unescape($name)}=&unescape($value);
4813: }
4814: }
4815: return 'ok';
4816: }
4817:
4818: return $response;
4819: }
4820:
4821: sub auto_validate_class_sec {
4822: my ($cdom,$cnum,$owner,$inst_class) = @_;
4823: my $homeserver = &homeserver($cnum,$cdom);
4824: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
4825: &escape($owner).':'.$cdom,$homeserver);
4826: return $response;
4827: }
4828:
4829: # ------------------------------------------------------- Course Group routines
4830:
4831: sub get_coursegroups {
4832: my ($cdom,$cnum,$group,$namespace) = @_;
4833: return(&dump($namespace,$cdom,$cnum,$group));
4834: }
4835:
4836: sub modify_coursegroup {
4837: my ($cdom,$cnum,$groupsettings) = @_;
4838: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
4839: }
4840:
4841: sub toggle_coursegroup_status {
4842: my ($cdom,$cnum,$group,$action) = @_;
4843: my ($from_namespace,$to_namespace);
4844: if ($action eq 'delete') {
4845: $from_namespace = 'coursegroups';
4846: $to_namespace = 'deleted_groups';
4847: } else {
4848: $from_namespace = 'deleted_groups';
4849: $to_namespace = 'coursegroups';
4850: }
4851: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
4852: if (my $tmp = &error(%curr_group)) {
4853: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
4854: return ('read error',$tmp);
4855: } else {
4856: my %savedsettings = %curr_group;
4857: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
4858: my $deloutcome;
4859: if ($result eq 'ok') {
4860: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
4861: } else {
4862: return ('write error',$result);
4863: }
4864: if ($deloutcome eq 'ok') {
4865: return 'ok';
4866: } else {
4867: return ('delete error',$deloutcome);
4868: }
4869: }
4870: }
4871:
4872: sub modify_group_roles {
4873: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs) = @_;
4874: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
4875: my $role = 'gr/'.&escape($userprivs);
4876: my ($uname,$udom) = split(/:/,$user);
4877: my $result = &assignrole($udom,$uname,$url,$role,$end,$start);
4878: if ($result eq 'ok') {
4879: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
4880: }
4881: return $result;
4882: }
4883:
4884: sub modify_coursegroup_membership {
4885: my ($cdom,$cnum,$membership) = @_;
4886: my $result = &put('groupmembership',$membership,$cdom,$cnum);
4887: return $result;
4888: }
4889:
4890: sub get_active_groups {
4891: my ($udom,$uname,$cdom,$cnum) = @_;
4892: my $now = time;
4893: my %groups = ();
4894: foreach my $key (keys(%env)) {
4895: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
4896: my ($start,$end) = split(/\./,$env{$key});
4897: if (($end!=0) && ($end<$now)) { next; }
4898: if (($start!=0) && ($start>$now)) { next; }
4899: if ($1 eq $cdom && $2 eq $cnum) {
4900: $groups{$3} = $env{$key} ;
4901: }
4902: }
4903: }
4904: return %groups;
4905: }
4906:
4907: sub get_group_membership {
4908: my ($cdom,$cnum,$group) = @_;
4909: return(&dump('groupmembership',$cdom,$cnum,$group));
4910: }
4911:
4912: sub get_users_groups {
4913: my ($udom,$uname,$courseid) = @_;
4914: my @usersgroups;
4915: my $cachetime=1800;
4916:
4917: my $hashid="$udom:$uname:$courseid";
4918: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
4919: if (defined($cached)) {
4920: @usersgroups = split(/:/,$grouplist);
4921: } else {
4922: $grouplist = '';
4923: my $courseurl = &courseid_to_courseurl($courseid);
4924: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
4925: my $access_end = $env{'course.'.$courseid.
4926: '.default_enrollment_end_date'};
4927: my $now = time;
4928: foreach my $key (keys(%roleshash)) {
4929: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
4930: my $group = $1;
4931: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
4932: my $start = $2;
4933: my $end = $1;
4934: if ($start == -1) { next; } # deleted from group
4935: if (($start!=0) && ($start>$now)) { next; }
4936: if (($end!=0) && ($end<$now)) {
4937: if ($access_end && $access_end < $now) {
4938: if ($access_end - $end < 86400) {
4939: push(@usersgroups,$group);
4940: }
4941: }
4942: next;
4943: }
4944: push(@usersgroups,$group);
4945: }
4946: }
4947: }
4948: @usersgroups = &sort_course_groups($courseid,@usersgroups);
4949: $grouplist = join(':',@usersgroups);
4950: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
4951: }
4952: return @usersgroups;
4953: }
4954:
4955: sub devalidate_getgroups_cache {
4956: my ($udom,$uname,$cdom,$cnum)=@_;
4957: my $courseid = $cdom.'_'.$cnum;
4958:
4959: my $hashid="$udom:$uname:$courseid";
4960: &devalidate_cache_new('getgroups',$hashid);
4961: }
4962:
4963: # ------------------------------------------------------------------ Plain Text
4964:
4965: sub plaintext {
4966: my ($short,$type,$cid) = @_;
4967: if ($short =~ /^cr/) {
4968: return (split('/',$short))[-1];
4969: }
4970: if (!defined($cid)) {
4971: $cid = $env{'request.course.id'};
4972: }
4973: if (defined($cid) && defined($env{'course.'.$cid.'.'.$short.'.plaintext'})) {
4974: return &Apache::lonlocal::mt($env{'course.'.$cid.'.'.$short.
4975: '.plaintext'});
4976: }
4977: my %rolenames = (
4978: Course => 'std',
4979: Group => 'alt1',
4980: );
4981: if (defined($type) &&
4982: defined($rolenames{$type}) &&
4983: defined($prp{$short}{$rolenames{$type}})) {
4984: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
4985: } else {
4986: return &Apache::lonlocal::mt($prp{$short}{'std'});
4987: }
4988: }
4989:
4990: # ----------------------------------------------------------------- Assign Role
4991:
4992: sub assignrole {
4993: my ($udom,$uname,$url,$role,$end,$start,$deleteflag)=@_;
4994: my $mrole;
4995: if ($role =~ /^cr\//) {
4996: my $cwosec=$url;
4997: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
4998: unless (&allowed('ccr',$cwosec)) {
4999: &logthis('Refused custom assignrole: '.
5000: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
5001: $env{'user.name'}.' at '.$env{'user.domain'});
5002: return 'refused';
5003: }
5004: $mrole='cr';
5005: } elsif ($role =~ /^gr\//) {
5006: my $cwogrp=$url;
5007: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
5008: unless (&allowed('mdg',$cwogrp)) {
5009: &logthis('Refused group assignrole: '.
5010: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
5011: $env{'user.name'}.' at '.$env{'user.domain'});
5012: return 'refused';
5013: }
5014: $mrole='gr';
5015: } else {
5016: my $cwosec=$url;
5017: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
5018: unless ((&allowed('c'.$role,$cwosec)) || &allowed('c'.$role,$udom)) {
5019: &logthis('Refused assignrole: '.
5020: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
5021: $env{'user.name'}.' at '.$env{'user.domain'});
5022: return 'refused';
5023: }
5024: $mrole=$role;
5025: }
5026: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
5027: "$udom:$uname:$url".'_'."$mrole=$role";
5028: if ($end) { $command.='_'.$end; }
5029: if ($start) {
5030: if ($end) {
5031: $command.='_'.$start;
5032: } else {
5033: $command.='_0_'.$start;
5034: }
5035: }
5036: my $origstart = $start;
5037: my $origend = $end;
5038: # actually delete
5039: if ($deleteflag) {
5040: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
5041: # modify command to delete the role
5042: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
5043: "$udom:$uname:$url".'_'."$mrole";
5044: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
5045: # set start and finish to negative values for userrolelog
5046: $start=-1;
5047: $end=-1;
5048: }
5049: }
5050: # send command
5051: my $answer=&reply($command,&homeserver($uname,$udom));
5052: # log new user role if status is ok
5053: if ($answer eq 'ok') {
5054: &userrolelog($role,$uname,$udom,$url,$start,$end);
5055: # for course roles, perform group memberships changes triggered by role change.
5056: unless ($role =~ /^gr/) {
5057: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
5058: $origstart);
5059: }
5060: }
5061: return $answer;
5062: }
5063:
5064: # -------------------------------------------------- Modify user authentication
5065: # Overrides without validation
5066:
5067: sub modifyuserauth {
5068: my ($udom,$uname,$umode,$upass)=@_;
5069: my $uhome=&homeserver($uname,$udom);
5070: unless (&allowed('mau',$udom)) { return 'refused'; }
5071: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
5072: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
5073: ' in domain '.$env{'request.role.domain'});
5074: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
5075: &escape($upass),$uhome);
5076: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
5077: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
5078: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
5079: &log($udom,,$uname,$uhome,
5080: 'Authentication changed by '.$env{'user.domain'}.', '.
5081: $env{'user.name'}.', '.$umode.
5082: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
5083: unless ($reply eq 'ok') {
5084: &logthis('Authentication mode error: '.$reply);
5085: return 'error: '.$reply;
5086: }
5087: return 'ok';
5088: }
5089:
5090: # --------------------------------------------------------------- Modify a user
5091:
5092: sub modifyuser {
5093: my ($udom, $uname, $uid,
5094: $umode, $upass, $first,
5095: $middle, $last, $gene,
5096: $forceid, $desiredhome, $email)=@_;
5097: $udom= &LONCAPA::clean_domain($udom);
5098: $uname=&LONCAPA::clean_username($uname);
5099: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
5100: $umode.', '.$first.', '.$middle.', '.
5101: $last.', '.$gene.'(forceid: '.$forceid.')'.
5102: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
5103: ' desiredhome not specified').
5104: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
5105: ' in domain '.$env{'request.role.domain'});
5106: my $uhome=&homeserver($uname,$udom,'true');
5107: # ----------------------------------------------------------------- Create User
5108: if (($uhome eq 'no_host') &&
5109: (($umode && $upass) || ($umode eq 'localauth'))) {
5110: my $unhome='';
5111: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
5112: $unhome = $desiredhome;
5113: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
5114: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
5115: } else { # load balancing routine for determining $unhome
5116: my $loadm=10000000;
5117: my %servers = &get_servers($udom,'library');
5118: foreach my $tryserver (keys(%servers)) {
5119: my $answer=reply('load',$tryserver);
5120: if (($answer=~/\d+/) && ($answer<$loadm)) {
5121: $loadm=$answer;
5122: $unhome=$tryserver;
5123: }
5124: }
5125: }
5126: if (($unhome eq '') || ($unhome eq 'no_host')) {
5127: return 'error: unable to find a home server for '.$uname.
5128: ' in domain '.$udom;
5129: }
5130: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
5131: &escape($upass),$unhome);
5132: unless ($reply eq 'ok') {
5133: return 'error: '.$reply;
5134: }
5135: $uhome=&homeserver($uname,$udom,'true');
5136: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
5137: return 'error: unable verify users home machine.';
5138: }
5139: } # End of creation of new user
5140: # ---------------------------------------------------------------------- Add ID
5141: if ($uid) {
5142: $uid=~tr/A-Z/a-z/;
5143: my %uidhash=&idrget($udom,$uname);
5144: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
5145: && (!$forceid)) {
5146: unless ($uid eq $uidhash{$uname}) {
5147: return 'error: user id "'.$uid.'" does not match '.
5148: 'current user id "'.$uidhash{$uname}.'".';
5149: }
5150: } else {
5151: &idput($udom,($uname => $uid));
5152: }
5153: }
5154: # -------------------------------------------------------------- Add names, etc
5155: my @tmp=&get('environment',
5156: ['firstname','middlename','lastname','generation','id',
5157: 'permanentemail'],
5158: $udom,$uname);
5159: my %names;
5160: if ($tmp[0] =~ m/^error:.*/) {
5161: %names=();
5162: } else {
5163: %names = @tmp;
5164: }
5165: #
5166: # Make sure to not trash student environment if instructor does not bother
5167: # to supply name and email information
5168: #
5169: if ($first) { $names{'firstname'} = $first; }
5170: if (defined($middle)) { $names{'middlename'} = $middle; }
5171: if ($last) { $names{'lastname'} = $last; }
5172: if (defined($gene)) { $names{'generation'} = $gene; }
5173: if ($email) {
5174: $email=~s/[^\w\@\.\-\,]//gs;
5175: if ($email=~/\@/) { $names{'notification'} = $email;
5176: $names{'critnotification'} = $email;
5177: $names{'permanentemail'} = $email; }
5178: }
5179: if ($uid) { $names{'id'} = $uid; }
5180: my $reply = &put('environment', \%names, $udom,$uname);
5181: if ($reply ne 'ok') { return 'error: '.$reply; }
5182: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
5183: &devalidate_cache_new('namescache',$uname.':'.$udom);
5184: &logthis('Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
5185: $umode.', '.$first.', '.$middle.', '.
5186: $last.', '.$gene.' by '.
5187: $env{'user.name'}.' at '.$env{'user.domain'});
5188: return 'ok';
5189: }
5190:
5191: # -------------------------------------------------------------- Modify student
5192:
5193: sub modifystudent {
5194: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
5195: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid)=@_;
5196: if (!$cid) {
5197: unless ($cid=$env{'request.course.id'}) {
5198: return 'not_in_class';
5199: }
5200: }
5201: # --------------------------------------------------------------- Make the user
5202: my $reply=&modifyuser
5203: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
5204: $desiredhome,$email);
5205: unless ($reply eq 'ok') { return $reply; }
5206: # This will cause &modify_student_enrollment to get the uid from the
5207: # students environment
5208: $uid = undef if (!$forceid);
5209: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
5210: $gene,$usec,$end,$start,$type,$locktype,$cid);
5211: return $reply;
5212: }
5213:
5214: sub modify_student_enrollment {
5215: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid) = @_;
5216: my ($cdom,$cnum,$chome);
5217: if (!$cid) {
5218: unless ($cid=$env{'request.course.id'}) {
5219: return 'not_in_class';
5220: }
5221: $cdom=$env{'course.'.$cid.'.domain'};
5222: $cnum=$env{'course.'.$cid.'.num'};
5223: } else {
5224: ($cdom,$cnum)=split(/_/,$cid);
5225: }
5226: $chome=$env{'course.'.$cid.'.home'};
5227: if (!$chome) {
5228: $chome=&homeserver($cnum,$cdom);
5229: }
5230: if (!$chome) { return 'unknown_course'; }
5231: # Make sure the user exists
5232: my $uhome=&homeserver($uname,$udom);
5233: if (($uhome eq '') || ($uhome eq 'no_host')) {
5234: return 'error: no such user';
5235: }
5236: # Get student data if we were not given enough information
5237: if (!defined($first) || $first eq '' ||
5238: !defined($last) || $last eq '' ||
5239: !defined($uid) || $uid eq '' ||
5240: !defined($middle) || $middle eq '' ||
5241: !defined($gene) || $gene eq '') {
5242: # They did not supply us with enough data to enroll the student, so
5243: # we need to pick up more information.
5244: my %tmp = &get('environment',
5245: ['firstname','middlename','lastname', 'generation','id']
5246: ,$udom,$uname);
5247:
5248: #foreach my $key (keys(%tmp)) {
5249: # &logthis("key $key = ".$tmp{$key});
5250: #}
5251: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
5252: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
5253: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
5254: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
5255: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
5256: }
5257: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
5258: my $reply=cput('classlist',
5259: {"$uname:$udom" =>
5260: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
5261: $cdom,$cnum);
5262: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
5263: return 'error: '.$reply;
5264: } else {
5265: &devalidate_getsection_cache($udom,$uname,$cid);
5266: }
5267: # Add student role to user
5268: my $uurl='/'.$cid;
5269: $uurl=~s/\_/\//g;
5270: if ($usec) {
5271: $uurl.='/'.$usec;
5272: }
5273: return &assignrole($udom,$uname,$uurl,'st',$end,$start);
5274: }
5275:
5276: sub format_name {
5277: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
5278: my $name;
5279: if ($first ne 'lastname') {
5280: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
5281: } else {
5282: if ($lastname=~/\S/) {
5283: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
5284: $name=~s/\s+,/,/;
5285: } else {
5286: $name.= $firstname.' '.$middlename.' '.$generation;
5287: }
5288: }
5289: $name=~s/^\s+//;
5290: $name=~s/\s+$//;
5291: $name=~s/\s+/ /g;
5292: return $name;
5293: }
5294:
5295: # ------------------------------------------------- Write to course preferences
5296:
5297: sub writecoursepref {
5298: my ($courseid,%prefs)=@_;
5299: $courseid=~s/^\///;
5300: $courseid=~s/\_/\//g;
5301: my ($cdomain,$cnum)=split(/\//,$courseid);
5302: my $chome=homeserver($cnum,$cdomain);
5303: if (($chome eq '') || ($chome eq 'no_host')) {
5304: return 'error: no such course';
5305: }
5306: my $cstring='';
5307: foreach my $pref (keys(%prefs)) {
5308: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
5309: }
5310: $cstring=~s/\&$//;
5311: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
5312: }
5313:
5314: # ---------------------------------------------------------- Make/modify course
5315:
5316: sub createcourse {
5317: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
5318: $course_owner,$crstype)=@_;
5319: $url=&declutter($url);
5320: my $cid='';
5321: unless (&allowed('ccc',$udom)) {
5322: return 'refused';
5323: }
5324: # ------------------------------------------------------------------- Create ID
5325: my $uname=int(1+rand(9)).
5326: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
5327: substr($$.time,0,5).unpack("H8",pack("I32",time)).
5328: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
5329: # ----------------------------------------------- Make sure that does not exist
5330: my $uhome=&homeserver($uname,$udom,'true');
5331: unless (($uhome eq '') || ($uhome eq 'no_host')) {
5332: $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
5333: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
5334: $uhome=&homeserver($uname,$udom,'true');
5335: unless (($uhome eq '') || ($uhome eq 'no_host')) {
5336: return 'error: unable to generate unique course-ID';
5337: }
5338: }
5339: # ------------------------------------------------ Check supplied server name
5340: $course_server = $env{'user.homeserver'} if (! defined($course_server));
5341: if (! &is_library($course_server)) {
5342: return 'error:bad server name '.$course_server;
5343: }
5344: # ------------------------------------------------------------- Make the course
5345: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
5346: $course_server);
5347: unless ($reply eq 'ok') { return 'error: '.$reply; }
5348: $uhome=&homeserver($uname,$udom,'true');
5349: if (($uhome eq '') || ($uhome eq 'no_host')) {
5350: return 'error: no such course';
5351: }
5352: # ----------------------------------------------------------------- Course made
5353: # log existence
5354: &courseidput($udom,&escape($udom.'_'.$uname).'='.&escape($description).
5355: ':'.&escape($inst_code).':'.&escape($course_owner).':'.
5356: &escape($crstype),$uhome);
5357: &flushcourselogs();
5358: # set toplevel url
5359: my $topurl=$url;
5360: unless ($nonstandard) {
5361: # ------------------------------------------ For standard courses, make top url
5362: my $mapurl=&clutter($url);
5363: if ($mapurl eq '/res/') { $mapurl=''; }
5364: $env{'form.initmap'}=(<<ENDINITMAP);
5365: <map>
5366: <resource id="1" type="start"></resource>
5367: <resource id="2" src="$mapurl"></resource>
5368: <resource id="3" type="finish"></resource>
5369: <link index="1" from="1" to="2"></link>
5370: <link index="2" from="2" to="3"></link>
5371: </map>
5372: ENDINITMAP
5373: $topurl=&declutter(
5374: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
5375: );
5376: }
5377: # ----------------------------------------------------------- Write preferences
5378: &writecoursepref($udom.'_'.$uname,
5379: ('description' => $description,
5380: 'url' => $topurl));
5381: return '/'.$udom.'/'.$uname;
5382: }
5383:
5384: sub is_course {
5385: my ($cdom,$cnum) = @_;
5386: my %courses = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,
5387: undef,'.');
5388: if (exists($courses{$cdom.'_'.$cnum})) {
5389: return 1;
5390: }
5391: return 0;
5392: }
5393:
5394: # ---------------------------------------------------------- Assign Custom Role
5395:
5396: sub assigncustomrole {
5397: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag)=@_;
5398: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
5399: $end,$start,$deleteflag);
5400: }
5401:
5402: # ----------------------------------------------------------------- Revoke Role
5403:
5404: sub revokerole {
5405: my ($udom,$uname,$url,$role,$deleteflag)=@_;
5406: my $now=time;
5407: return &assignrole($udom,$uname,$url,$role,$now,$deleteflag);
5408: }
5409:
5410: # ---------------------------------------------------------- Revoke Custom Role
5411:
5412: sub revokecustomrole {
5413: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag)=@_;
5414: my $now=time;
5415: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
5416: $deleteflag);
5417: }
5418:
5419: # ------------------------------------------------------------ Disk usage
5420: sub diskusage {
5421: my ($udom,$uname,$directoryRoot)=@_;
5422: $directoryRoot =~ s/\/$//;
5423: my $listing=&reply('du:'.$directoryRoot,homeserver($uname,$udom));
5424: return $listing;
5425: }
5426:
5427: sub is_locked {
5428: my ($file_name, $domain, $user) = @_;
5429: my @check;
5430: my $is_locked;
5431: push @check, $file_name;
5432: my %locked = &get('file_permissions',\@check,
5433: $env{'user.domain'},$env{'user.name'});
5434: my ($tmp)=keys(%locked);
5435: if ($tmp=~/^error:/) { undef(%locked); }
5436:
5437: if (ref($locked{$file_name}) eq 'ARRAY') {
5438: $is_locked = 'false';
5439: foreach my $entry (@{$locked{$file_name}}) {
5440: if (ref($entry) eq 'ARRAY') {
5441: $is_locked = 'true';
5442: last;
5443: }
5444: }
5445: } else {
5446: $is_locked = 'false';
5447: }
5448: }
5449:
5450: sub declutter_portfile {
5451: my ($file) = @_;
5452: $file =~ s{^(/portfolio/|portfolio/)}{/};
5453: return $file;
5454: }
5455:
5456: # ------------------------------------------------------------- Mark as Read Only
5457:
5458: sub mark_as_readonly {
5459: my ($domain,$user,$files,$what) = @_;
5460: my %current_permissions = &dump('file_permissions',$domain,$user);
5461: my ($tmp)=keys(%current_permissions);
5462: if ($tmp=~/^error:/) { undef(%current_permissions); }
5463: foreach my $file (@{$files}) {
5464: $file = &declutter_portfile($file);
5465: push(@{$current_permissions{$file}},$what);
5466: }
5467: &put('file_permissions',\%current_permissions,$domain,$user);
5468: return;
5469: }
5470:
5471: # ------------------------------------------------------------Save Selected Files
5472:
5473: sub save_selected_files {
5474: my ($user, $path, @files) = @_;
5475: my $filename = $user."savedfiles";
5476: my @other_files = &files_not_in_path($user, $path);
5477: open (OUT, '>'.$tmpdir.$filename);
5478: foreach my $file (@files) {
5479: print (OUT $env{'form.currentpath'}.$file."\n");
5480: }
5481: foreach my $file (@other_files) {
5482: print (OUT $file."\n");
5483: }
5484: close (OUT);
5485: return 'ok';
5486: }
5487:
5488: sub clear_selected_files {
5489: my ($user) = @_;
5490: my $filename = $user."savedfiles";
5491: open (OUT, '>'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
5492: print (OUT undef);
5493: close (OUT);
5494: return ("ok");
5495: }
5496:
5497: sub files_in_path {
5498: my ($user, $path) = @_;
5499: my $filename = $user."savedfiles";
5500: my %return_files;
5501: open (IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
5502: while (my $line_in = <IN>) {
5503: chomp ($line_in);
5504: my @paths_and_file = split (m!/!, $line_in);
5505: my $file_part = pop (@paths_and_file);
5506: my $path_part = join ('/', @paths_and_file);
5507: $path_part.='/';
5508: my $path_and_file = $path_part.$file_part;
5509: if ($path_part eq $path) {
5510: $return_files{$file_part}= 'selected';
5511: }
5512: }
5513: close (IN);
5514: return (\%return_files);
5515: }
5516:
5517: # called in portfolio select mode, to show files selected NOT in current directory
5518: sub files_not_in_path {
5519: my ($user, $path) = @_;
5520: my $filename = $user."savedfiles";
5521: my @return_files;
5522: my $path_part;
5523: open(IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
5524: while (my $line = <IN>) {
5525: #ok, I know it's clunky, but I want it to work
5526: my @paths_and_file = split(m|/|, $line);
5527: my $file_part = pop(@paths_and_file);
5528: chomp($file_part);
5529: my $path_part = join('/', @paths_and_file);
5530: $path_part .= '/';
5531: my $path_and_file = $path_part.$file_part;
5532: if ($path_part ne $path) {
5533: push(@return_files, ($path_and_file));
5534: }
5535: }
5536: close(OUT);
5537: return (@return_files);
5538: }
5539:
5540: #----------------------------------------------Get portfolio file permissions
5541:
5542: sub get_portfile_permissions {
5543: my ($domain,$user) = @_;
5544: my %current_permissions = &dump('file_permissions',$domain,$user);
5545: my ($tmp)=keys(%current_permissions);
5546: if ($tmp=~/^error:/) { undef(%current_permissions); }
5547: return \%current_permissions;
5548: }
5549:
5550: #---------------------------------------------Get portfolio file access controls
5551:
5552: sub get_access_controls {
5553: my ($current_permissions,$group,$file) = @_;
5554: my %access;
5555: my $real_file = $file;
5556: $file =~ s/\.meta$//;
5557: if (defined($file)) {
5558: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
5559: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
5560: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
5561: }
5562: }
5563: } else {
5564: foreach my $key (keys(%{$current_permissions})) {
5565: if ($key =~ /\0accesscontrol$/) {
5566: if (defined($group)) {
5567: if ($key !~ m-^\Q$group\E/-) {
5568: next;
5569: }
5570: }
5571: my ($fullpath) = split(/\0/,$key);
5572: if (ref($$current_permissions{$key}) eq 'HASH') {
5573: foreach my $control (keys(%{$$current_permissions{$key}})) {
5574: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
5575: }
5576: }
5577: }
5578: }
5579: }
5580: return %access;
5581: }
5582:
5583: sub modify_access_controls {
5584: my ($file_name,$changes,$domain,$user)=@_;
5585: my ($outcome,$deloutcome);
5586: my %store_permissions;
5587: my %new_values;
5588: my %new_control;
5589: my %translation;
5590: my @deletions = ();
5591: my $now = time;
5592: if (exists($$changes{'activate'})) {
5593: if (ref($$changes{'activate'}) eq 'HASH') {
5594: my @newitems = sort(keys(%{$$changes{'activate'}}));
5595: my $numnew = scalar(@newitems);
5596: for (my $i=0; $i<$numnew; $i++) {
5597: my $newkey = $newitems[$i];
5598: my $newid = &Apache::loncommon::get_cgi_id();
5599: if ($newkey =~ /^\d+:/) {
5600: $newkey =~ s/^(\d+)/$newid/;
5601: $translation{$1} = $newid;
5602: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
5603: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
5604: $translation{$1} = $newid;
5605: }
5606: $new_values{$file_name."\0".$newkey} =
5607: $$changes{'activate'}{$newitems[$i]};
5608: $new_control{$newkey} = $now;
5609: }
5610: }
5611: }
5612: my %todelete;
5613: my %changed_items;
5614: foreach my $action ('delete','update') {
5615: if (exists($$changes{$action})) {
5616: if (ref($$changes{$action}) eq 'HASH') {
5617: foreach my $key (keys(%{$$changes{$action}})) {
5618: my ($itemnum) = ($key =~ /^([^:]+):/);
5619: if ($action eq 'delete') {
5620: $todelete{$itemnum} = 1;
5621: } else {
5622: $changed_items{$itemnum} = $key;
5623: }
5624: }
5625: }
5626: }
5627: }
5628: # get lock on access controls for file.
5629: my $lockhash = {
5630: $file_name."\0".'locked_access_records' => $env{'user.name'}.
5631: ':'.$env{'user.domain'},
5632: };
5633: my $tries = 0;
5634: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
5635:
5636: while (($gotlock ne 'ok') && $tries <3) {
5637: $tries ++;
5638: sleep 1;
5639: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
5640: }
5641: if ($gotlock eq 'ok') {
5642: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
5643: my ($tmp)=keys(%curr_permissions);
5644: if ($tmp=~/^error:/) { undef(%curr_permissions); }
5645: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
5646: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
5647: if (ref($curr_controls) eq 'HASH') {
5648: foreach my $control_item (keys(%{$curr_controls})) {
5649: my ($itemnum) = ($control_item =~ /^([^:]+):/);
5650: if (defined($todelete{$itemnum})) {
5651: push(@deletions,$file_name."\0".$control_item);
5652: } else {
5653: if (defined($changed_items{$itemnum})) {
5654: $new_control{$changed_items{$itemnum}} = $now;
5655: push(@deletions,$file_name."\0".$control_item);
5656: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
5657: } else {
5658: $new_control{$control_item} = $$curr_controls{$control_item};
5659: }
5660: }
5661: }
5662: }
5663: }
5664: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
5665: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
5666: $outcome = &put('file_permissions',\%new_values,$domain,$user);
5667: # remove lock
5668: my @del_lock = ($file_name."\0".'locked_access_records');
5669: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
5670: my ($file,$group);
5671: if (&is_course($domain,$user)) {
5672: ($group,$file) = split(/\//,$file_name,2);
5673: } else {
5674: $file = $file_name;
5675: }
5676: my $sqlresult =
5677: &update_portfolio_table($user,$domain,$file,'portfolio_access',
5678: $group);
5679: } else {
5680: $outcome = "error: could not obtain lockfile\n";
5681: }
5682: return ($outcome,$deloutcome,\%new_values,\%translation);
5683: }
5684:
5685: sub make_public_indefinitely {
5686: my ($requrl) = @_;
5687: my $now = time;
5688: my $action = 'activate';
5689: my $aclnum = 0;
5690: if (&is_portfolio_url($requrl)) {
5691: my (undef,$udom,$unum,$file_name,$group) =
5692: &parse_portfolio_url($requrl);
5693: my $current_perms = &get_portfile_permissions($udom,$unum);
5694: my %access_controls = &get_access_controls($current_perms,
5695: $group,$file_name);
5696: foreach my $key (keys(%{$access_controls{$file_name}})) {
5697: my ($num,$scope,$end,$start) =
5698: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
5699: if ($scope eq 'public') {
5700: if ($start <= $now && $end == 0) {
5701: $action = 'none';
5702: } else {
5703: $action = 'update';
5704: $aclnum = $num;
5705: }
5706: last;
5707: }
5708: }
5709: if ($action eq 'none') {
5710: return 'ok';
5711: } else {
5712: my %changes;
5713: my $newend = 0;
5714: my $newstart = $now;
5715: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
5716: $changes{$action}{$newkey} = {
5717: type => 'public',
5718: time => {
5719: start => $newstart,
5720: end => $newend,
5721: },
5722: };
5723: my ($outcome,$deloutcome,$new_values,$translation) =
5724: &modify_access_controls($file_name,\%changes,$udom,$unum);
5725: return $outcome;
5726: }
5727: } else {
5728: return 'invalid';
5729: }
5730: }
5731:
5732: #------------------------------------------------------Get Marked as Read Only
5733:
5734: sub get_marked_as_readonly {
5735: my ($domain,$user,$what,$group) = @_;
5736: my $current_permissions = &get_portfile_permissions($domain,$user);
5737: my @readonly_files;
5738: my $cmp1=$what;
5739: if (ref($what)) { $cmp1=join('',@{$what}) };
5740: while (my ($file_name,$value) = each(%{$current_permissions})) {
5741: if (defined($group)) {
5742: if ($file_name !~ m-^\Q$group\E/-) {
5743: next;
5744: }
5745: }
5746: if (ref($value) eq "ARRAY"){
5747: foreach my $stored_what (@{$value}) {
5748: my $cmp2=$stored_what;
5749: if (ref($stored_what) eq 'ARRAY') {
5750: $cmp2=join('',@{$stored_what});
5751: }
5752: if ($cmp1 eq $cmp2) {
5753: push(@readonly_files, $file_name);
5754: last;
5755: } elsif (!defined($what)) {
5756: push(@readonly_files, $file_name);
5757: last;
5758: }
5759: }
5760: }
5761: }
5762: return @readonly_files;
5763: }
5764: #-----------------------------------------------------------Get Marked as Read Only Hash
5765:
5766: sub get_marked_as_readonly_hash {
5767: my ($current_permissions,$group,$what) = @_;
5768: my %readonly_files;
5769: while (my ($file_name,$value) = each(%{$current_permissions})) {
5770: if (defined($group)) {
5771: if ($file_name !~ m-^\Q$group\E/-) {
5772: next;
5773: }
5774: }
5775: if (ref($value) eq "ARRAY"){
5776: foreach my $stored_what (@{$value}) {
5777: if (ref($stored_what) eq 'ARRAY') {
5778: foreach my $lock_descriptor(@{$stored_what}) {
5779: if ($lock_descriptor eq 'graded') {
5780: $readonly_files{$file_name} = 'graded';
5781: } elsif ($lock_descriptor eq 'handback') {
5782: $readonly_files{$file_name} = 'handback';
5783: } else {
5784: if (!exists($readonly_files{$file_name})) {
5785: $readonly_files{$file_name} = 'locked';
5786: }
5787: }
5788: }
5789: }
5790: }
5791: }
5792: }
5793: return %readonly_files;
5794: }
5795: # ------------------------------------------------------------ Unmark as Read Only
5796:
5797: sub unmark_as_readonly {
5798: # unmarks $file_name (if $file_name is defined), or all files locked by $what
5799: # for portfolio submissions, $what contains [$symb,$crsid]
5800: my ($domain,$user,$what,$file_name,$group) = @_;
5801: $file_name = &declutter_portfile($file_name);
5802: my $symb_crs = $what;
5803: if (ref($what)) { $symb_crs=join('',@$what); }
5804: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
5805: my ($tmp)=keys(%current_permissions);
5806: if ($tmp=~/^error:/) { undef(%current_permissions); }
5807: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
5808: foreach my $file (@readonly_files) {
5809: my $clean_file = &declutter_portfile($file);
5810: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
5811: my $current_locks = $current_permissions{$file};
5812: my @new_locks;
5813: my @del_keys;
5814: if (ref($current_locks) eq "ARRAY"){
5815: foreach my $locker (@{$current_locks}) {
5816: my $compare=$locker;
5817: if (ref($locker) eq 'ARRAY') {
5818: $compare=join('',@{$locker});
5819: if ($compare ne $symb_crs) {
5820: push(@new_locks, $locker);
5821: }
5822: }
5823: }
5824: if (scalar(@new_locks) > 0) {
5825: $current_permissions{$file} = \@new_locks;
5826: } else {
5827: push(@del_keys, $file);
5828: &del('file_permissions',\@del_keys, $domain, $user);
5829: delete($current_permissions{$file});
5830: }
5831: }
5832: }
5833: &put('file_permissions',\%current_permissions,$domain,$user);
5834: return;
5835: }
5836:
5837: # ------------------------------------------------------------ Directory lister
5838:
5839: sub dirlist {
5840: my ($uri,$userdomain,$username,$alternateDirectoryRoot)=@_;
5841:
5842: $uri=~s/^\///;
5843: $uri=~s/\/$//;
5844: my ($udom, $uname);
5845: (undef,$udom,$uname)=split(/\//,$uri);
5846: if(defined($userdomain)) {
5847: $udom = $userdomain;
5848: }
5849: if(defined($username)) {
5850: $uname = $username;
5851: }
5852:
5853: my $dirRoot = $perlvar{'lonDocRoot'};
5854: if(defined($alternateDirectoryRoot)) {
5855: $dirRoot = $alternateDirectoryRoot;
5856: $dirRoot =~ s/\/$//;
5857: }
5858:
5859: if($udom) {
5860: if($uname) {
5861: my $listing = &reply('ls2:'.$dirRoot.'/'.$uri,
5862: &homeserver($uname,$udom));
5863: my @listing_results;
5864: if ($listing eq 'unknown_cmd') {
5865: $listing = &reply('ls:'.$dirRoot.'/'.$uri,
5866: &homeserver($uname,$udom));
5867: @listing_results = split(/:/,$listing);
5868: } else {
5869: @listing_results = map { &unescape($_); } split(/:/,$listing);
5870: }
5871: return @listing_results;
5872: } elsif(!defined($alternateDirectoryRoot)) {
5873: my %allusers;
5874: my %servers = &get_servers($udom,'library');
5875: foreach my $tryserver (keys(%servers)) {
5876: my $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
5877: $udom, $tryserver);
5878: my @listing_results;
5879: if ($listing eq 'unknown_cmd') {
5880: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
5881: $udom, $tryserver);
5882: @listing_results = split(/:/,$listing);
5883: } else {
5884: @listing_results =
5885: map { &unescape($_); } split(/:/,$listing);
5886: }
5887: if ($listing_results[0] ne 'no_such_dir' &&
5888: $listing_results[0] ne 'empty' &&
5889: $listing_results[0] ne 'con_lost') {
5890: foreach my $line (@listing_results) {
5891: my ($entry) = split(/&/,$line,2);
5892: $allusers{$entry} = 1;
5893: }
5894: }
5895: }
5896: my $alluserstr='';
5897: foreach my $user (sort(keys(%allusers))) {
5898: $alluserstr.=$user.'&user:';
5899: }
5900: $alluserstr=~s/:$//;
5901: return split(/:/,$alluserstr);
5902: } else {
5903: return ('missing user name');
5904: }
5905: } elsif(!defined($alternateDirectoryRoot)) {
5906: my @all_domains = sort(&all_domains());
5907: foreach my $domain (@all_domains) {
5908: $domain = $perlvar{'lonDocRoot'}.'/res/'.$domain.'/&domain';
5909: }
5910: return @all_domains;
5911: } else {
5912: return ('missing domain');
5913: }
5914: }
5915:
5916: # --------------------------------------------- GetFileTimestamp
5917: # This function utilizes dirlist and returns the date stamp for
5918: # when it was last modified. It will also return an error of -1
5919: # if an error occurs
5920:
5921: ##
5922: ## FIXME: This subroutine assumes its caller knows something about the
5923: ## directory structure of the home server for the student ($root).
5924: ## Not a good assumption to make. Since this is for looking up files
5925: ## in user directories, the full path should be constructed by lond, not
5926: ## whatever machine we request data from.
5927: ##
5928: sub GetFileTimestamp {
5929: my ($studentDomain,$studentName,$filename,$root)=@_;
5930: $studentDomain = &LONCAPA::clean_domain($studentDomain);
5931: $studentName = &LONCAPA::clean_username($studentName);
5932: my $subdir=$studentName.'__';
5933: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
5934: my $proname="$studentDomain/$subdir/$studentName";
5935: $proname .= '/'.$filename;
5936: my ($fileStat) = &Apache::lonnet::dirlist($proname, $studentDomain,
5937: $studentName, $root);
5938: my @stats = split('&', $fileStat);
5939: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
5940: # @stats contains first the filename, then the stat output
5941: return $stats[10]; # so this is 10 instead of 9.
5942: } else {
5943: return -1;
5944: }
5945: }
5946:
5947: sub stat_file {
5948: my ($uri) = @_;
5949: $uri = &clutter_with_no_wrapper($uri);
5950:
5951: my ($udom,$uname,$file,$dir);
5952: if ($uri =~ m-^/(uploaded|editupload)/-) {
5953: ($udom,$uname,$file) =
5954: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
5955: $file = 'userfiles/'.$file;
5956: $dir = &propath($udom,$uname);
5957: }
5958: if ($uri =~ m-^/res/-) {
5959: ($udom,$uname) =
5960: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
5961: $file = $uri;
5962: }
5963:
5964: if (!$udom || !$uname || !$file) {
5965: # unable to handle the uri
5966: return ();
5967: }
5968:
5969: my ($result) = &dirlist($file,$udom,$uname,$dir);
5970: my @stats = split('&', $result);
5971:
5972: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
5973: shift(@stats); #filename is first
5974: return @stats;
5975: }
5976: return ();
5977: }
5978:
5979: # -------------------------------------------------------- Value of a Condition
5980:
5981: # gets the value of a specific preevaluated condition
5982: # stored in the string $env{user.state.<cid>}
5983: # or looks up a condition reference in the bighash and if if hasn't
5984: # already been evaluated recurses into docondval to get the value of
5985: # the condition, then memoizing it to
5986: # $env{user.state.<cid>.<condition>}
5987: sub directcondval {
5988: my $number=shift;
5989: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
5990: &Apache::lonuserstate::evalstate();
5991: }
5992: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
5993: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
5994: } elsif ($number =~ /^_/) {
5995: my $sub_condition;
5996: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
5997: &GDBM_READER(),0640)) {
5998: $sub_condition=$bighash{'conditions'.$number};
5999: untie(%bighash);
6000: }
6001: my $value = &docondval($sub_condition);
6002: &appenv('user.state.'.$env{'request.course.id'}.".$number" => $value);
6003: return $value;
6004: }
6005: if ($env{'user.state.'.$env{'request.course.id'}}) {
6006: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
6007: } else {
6008: return 2;
6009: }
6010: }
6011:
6012: # get the collection of conditions for this resource
6013: sub condval {
6014: my $condidx=shift;
6015: my $allpathcond='';
6016: foreach my $cond (split(/\|/,$condidx)) {
6017: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
6018: $allpathcond.=
6019: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
6020: }
6021: }
6022: $allpathcond=~s/\|$//;
6023: return &docondval($allpathcond);
6024: }
6025:
6026: #evaluates an expression of conditions
6027: sub docondval {
6028: my ($allpathcond) = @_;
6029: my $result=0;
6030: if ($env{'request.course.id'}
6031: && defined($allpathcond)) {
6032: my $operand='|';
6033: my @stack;
6034: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
6035: if ($chunk eq '(') {
6036: push @stack,($operand,$result);
6037: } elsif ($chunk eq ')') {
6038: my $before=pop @stack;
6039: if (pop @stack eq '&') {
6040: $result=$result>$before?$before:$result;
6041: } else {
6042: $result=$result>$before?$result:$before;
6043: }
6044: } elsif (($chunk eq '&') || ($chunk eq '|')) {
6045: $operand=$chunk;
6046: } else {
6047: my $new=directcondval($chunk);
6048: if ($operand eq '&') {
6049: $result=$result>$new?$new:$result;
6050: } else {
6051: $result=$result>$new?$result:$new;
6052: }
6053: }
6054: }
6055: }
6056: return $result;
6057: }
6058:
6059: # ---------------------------------------------------- Devalidate courseresdata
6060:
6061: sub devalidatecourseresdata {
6062: my ($coursenum,$coursedomain)=@_;
6063: my $hashid=$coursenum.':'.$coursedomain;
6064: &devalidate_cache_new('courseres',$hashid);
6065: }
6066:
6067:
6068: # --------------------------------------------------- Course Resourcedata Query
6069: #
6070: # Parameters:
6071: # $coursenum - Number of the course.
6072: # $coursedomain - Domain at which the course was created.
6073: # Returns:
6074: # A hash of the course parameters along (I think) with timestamps
6075: # and version info.
6076:
6077: sub get_courseresdata {
6078: my ($coursenum,$coursedomain)=@_;
6079: my $coursehom=&homeserver($coursenum,$coursedomain);
6080: my $hashid=$coursenum.':'.$coursedomain;
6081: my ($result,$cached)=&is_cached_new('courseres',$hashid);
6082: my %dumpreply;
6083: unless (defined($cached)) {
6084: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
6085: $result=\%dumpreply;
6086: my ($tmp) = keys(%dumpreply);
6087: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
6088: &do_cache_new('courseres',$hashid,$result,600);
6089: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
6090: return $tmp;
6091: } elsif ($tmp =~ /^(error)/) {
6092: $result=undef;
6093: &do_cache_new('courseres',$hashid,$result,600);
6094: }
6095: }
6096: return $result;
6097: }
6098:
6099: sub devalidateuserresdata {
6100: my ($uname,$udom)=@_;
6101: my $hashid="$udom:$uname";
6102: &devalidate_cache_new('userres',$hashid);
6103: }
6104:
6105: sub get_userresdata {
6106: my ($uname,$udom)=@_;
6107: #most student don\'t have any data set, check if there is some data
6108: if (&EXT_cache_status($udom,$uname)) { return undef; }
6109:
6110: my $hashid="$udom:$uname";
6111: my ($result,$cached)=&is_cached_new('userres',$hashid);
6112: if (!defined($cached)) {
6113: my %resourcedata=&dump('resourcedata',$udom,$uname);
6114: $result=\%resourcedata;
6115: &do_cache_new('userres',$hashid,$result,600);
6116: }
6117: my ($tmp)=keys(%$result);
6118: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
6119: return $result;
6120: }
6121: #error 2 occurs when the .db doesn't exist
6122: if ($tmp!~/error: 2 /) {
6123: &logthis("<font color=\"blue\">WARNING:".
6124: " Trying to get resource data for ".
6125: $uname." at ".$udom.": ".
6126: $tmp."</font>");
6127: } elsif ($tmp=~/error: 2 /) {
6128: #&EXT_cache_set($udom,$uname);
6129: &do_cache_new('userres',$hashid,undef,600);
6130: undef($tmp); # not really an error so don't send it back
6131: }
6132: return $tmp;
6133: }
6134: #----------------------------------------------- resdata - return resource data
6135: # Purpose:
6136: # Return resource data for either users or for a course.
6137: # Parameters:
6138: # $name - Course/user name.
6139: # $domain - Name of the domain the user/course is registered on.
6140: # $type - Type of thing $name is (must be 'course' or 'user'
6141: # @which - Array of names of resources desired.
6142: # Returns:
6143: # The value of the first reasource in @which that is found in the
6144: # resource hash.
6145: # Exceptional Conditions:
6146: # If the $type passed in is not valid (not the string 'course' or
6147: # 'user', an undefined reference is returned.
6148: # If none of the resources are found, an undef is returned
6149: sub resdata {
6150: my ($name,$domain,$type,@which)=@_;
6151: my $result;
6152: if ($type eq 'course') {
6153: $result=&get_courseresdata($name,$domain);
6154: } elsif ($type eq 'user') {
6155: $result=&get_userresdata($name,$domain);
6156: }
6157: if (!ref($result)) { return $result; }
6158: foreach my $item (@which) {
6159: if (defined($result->{$item})) {
6160: return $result->{$item};
6161: }
6162: }
6163: return undef;
6164: }
6165:
6166: #
6167: # EXT resource caching routines
6168: #
6169:
6170: sub clear_EXT_cache_status {
6171: &delenv('cache.EXT.');
6172: }
6173:
6174: sub EXT_cache_status {
6175: my ($target_domain,$target_user) = @_;
6176: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
6177: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
6178: # We know already the user has no data
6179: return 1;
6180: } else {
6181: return 0;
6182: }
6183: }
6184:
6185: sub EXT_cache_set {
6186: my ($target_domain,$target_user) = @_;
6187: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
6188: #&appenv($cachename => time);
6189: }
6190:
6191: # --------------------------------------------------------- Value of a Variable
6192: sub EXT {
6193:
6194: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
6195: unless ($varname) { return ''; }
6196: #get real user name/domain, courseid and symb
6197: my $courseid;
6198: my $publicuser;
6199: if ($symbparm) {
6200: $symbparm=&get_symb_from_alias($symbparm);
6201: }
6202: if (!($uname && $udom)) {
6203: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
6204: if (!$symbparm) { $symbparm=$cursymb; }
6205: } else {
6206: $courseid=$env{'request.course.id'};
6207: }
6208: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
6209: my $rest;
6210: if (defined($therest[0])) {
6211: $rest=join('.',@therest);
6212: } else {
6213: $rest='';
6214: }
6215:
6216: my $qualifierrest=$qualifier;
6217: if ($rest) { $qualifierrest.='.'.$rest; }
6218: my $spacequalifierrest=$space;
6219: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
6220: if ($realm eq 'user') {
6221: # --------------------------------------------------------------- user.resource
6222: if ($space eq 'resource') {
6223: if ( (defined($Apache::lonhomework::parsing_a_problem)
6224: || defined($Apache::lonhomework::parsing_a_task))
6225: &&
6226: ($symbparm eq &symbread()) ) {
6227: # if we are in the middle of processing the resource the
6228: # get the value we are planning on committing
6229: if (defined($Apache::lonhomework::results{$qualifierrest})) {
6230: return $Apache::lonhomework::results{$qualifierrest};
6231: } else {
6232: return $Apache::lonhomework::history{$qualifierrest};
6233: }
6234: } else {
6235: my %restored;
6236: if ($publicuser || $env{'request.state'} eq 'construct') {
6237: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
6238: } else {
6239: %restored=&restore($symbparm,$courseid,$udom,$uname);
6240: }
6241: return $restored{$qualifierrest};
6242: }
6243: # ----------------------------------------------------------------- user.access
6244: } elsif ($space eq 'access') {
6245: # FIXME - not supporting calls for a specific user
6246: return &allowed($qualifier,$rest);
6247: # ------------------------------------------ user.preferences, user.environment
6248: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
6249: if (($uname eq $env{'user.name'}) &&
6250: ($udom eq $env{'user.domain'})) {
6251: return $env{join('.',('environment',$qualifierrest))};
6252: } else {
6253: my %returnhash;
6254: if (!$publicuser) {
6255: %returnhash=&userenvironment($udom,$uname,
6256: $qualifierrest);
6257: }
6258: return $returnhash{$qualifierrest};
6259: }
6260: # ----------------------------------------------------------------- user.course
6261: } elsif ($space eq 'course') {
6262: # FIXME - not supporting calls for a specific user
6263: return $env{join('.',('request.course',$qualifier))};
6264: # ------------------------------------------------------------------- user.role
6265: } elsif ($space eq 'role') {
6266: # FIXME - not supporting calls for a specific user
6267: my ($role,$where)=split(/\./,$env{'request.role'});
6268: if ($qualifier eq 'value') {
6269: return $role;
6270: } elsif ($qualifier eq 'extent') {
6271: return $where;
6272: }
6273: # ----------------------------------------------------------------- user.domain
6274: } elsif ($space eq 'domain') {
6275: return $udom;
6276: # ------------------------------------------------------------------- user.name
6277: } elsif ($space eq 'name') {
6278: return $uname;
6279: # ---------------------------------------------------- Any other user namespace
6280: } else {
6281: my %reply;
6282: if (!$publicuser) {
6283: %reply=&get($space,[$qualifierrest],$udom,$uname);
6284: }
6285: return $reply{$qualifierrest};
6286: }
6287: } elsif ($realm eq 'query') {
6288: # ---------------------------------------------- pull stuff out of query string
6289: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
6290: [$spacequalifierrest]);
6291: return $env{'form.'.$spacequalifierrest};
6292: } elsif ($realm eq 'request') {
6293: # ------------------------------------------------------------- request.browser
6294: if ($space eq 'browser') {
6295: if ($qualifier eq 'textremote') {
6296: if (&Apache::lonlocal::mt('textual_remote_display') eq 'on') {
6297: return 1;
6298: } else {
6299: return 0;
6300: }
6301: } else {
6302: return $env{'browser.'.$qualifier};
6303: }
6304: # ------------------------------------------------------------ request.filename
6305: } else {
6306: return $env{'request.'.$spacequalifierrest};
6307: }
6308: } elsif ($realm eq 'course') {
6309: # ---------------------------------------------------------- course.description
6310: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
6311: } elsif ($realm eq 'resource') {
6312:
6313: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
6314: if (!$symbparm) { $symbparm=&symbread(); }
6315: }
6316:
6317: if ($space eq 'title') {
6318: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
6319: return &gettitle($symbparm);
6320: }
6321:
6322: if ($space eq 'map') {
6323: my ($map) = &decode_symb($symbparm);
6324: return &symbread($map);
6325: }
6326: if ($space eq 'filename') {
6327: if ($symbparm) {
6328: return &clutter((&decode_symb($symbparm))[2]);
6329: }
6330: return &hreflocation('',$env{'request.filename'});
6331: }
6332:
6333: my ($section, $group, @groups);
6334: my ($courselevelm,$courselevel);
6335: if ($symbparm && defined($courseid) &&
6336: $courseid eq $env{'request.course.id'}) {
6337:
6338: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
6339:
6340: # ----------------------------------------------------- Cascading lookup scheme
6341: my $symbp=$symbparm;
6342: my $mapp=&deversion((&decode_symb($symbp))[0]);
6343:
6344: my $symbparm=$symbp.'.'.$spacequalifierrest;
6345: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
6346:
6347: if (($env{'user.name'} eq $uname) &&
6348: ($env{'user.domain'} eq $udom)) {
6349: $section=$env{'request.course.sec'};
6350: @groups = split(/:/,$env{'request.course.groups'});
6351: @groups=&sort_course_groups($courseid,@groups);
6352: } else {
6353: if (! defined($usection)) {
6354: $section=&getsection($udom,$uname,$courseid);
6355: } else {
6356: $section = $usection;
6357: }
6358: @groups = &get_users_groups($udom,$uname,$courseid);
6359: }
6360:
6361: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
6362: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
6363: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
6364:
6365: $courselevel=$courseid.'.'.$spacequalifierrest;
6366: my $courselevelr=$courseid.'.'.$symbparm;
6367: $courselevelm=$courseid.'.'.$mapparm;
6368:
6369: # ----------------------------------------------------------- first, check user
6370:
6371: my $userreply=&resdata($uname,$udom,'user',
6372: ($courselevelr,$courselevelm,
6373: $courselevel));
6374: if (defined($userreply)) { return $userreply; }
6375:
6376: # ------------------------------------------------ second, check some of course
6377: my $coursereply;
6378: if (@groups > 0) {
6379: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
6380: $mapparm,$spacequalifierrest);
6381: if (defined($coursereply)) { return $coursereply; }
6382: }
6383:
6384: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
6385: $env{'course.'.$courseid.'.domain'},
6386: 'course',
6387: ($seclevelr,$seclevelm,$seclevel,
6388: $courselevelr));
6389: if (defined($coursereply)) { return $coursereply; }
6390:
6391: # ------------------------------------------------------ third, check map parms
6392: my %parmhash=();
6393: my $thisparm='';
6394: if (tie(%parmhash,'GDBM_File',
6395: $env{'request.course.fn'}.'_parms.db',
6396: &GDBM_READER(),0640)) {
6397: $thisparm=$parmhash{$symbparm};
6398: untie(%parmhash);
6399: }
6400: if ($thisparm) { return $thisparm; }
6401: }
6402: # ------------------------------------------ fourth, look in resource metadata
6403:
6404: $spacequalifierrest=~s/\./\_/;
6405: my $filename;
6406: if (!$symbparm) { $symbparm=&symbread(); }
6407: if ($symbparm) {
6408: $filename=(&decode_symb($symbparm))[2];
6409: } else {
6410: $filename=$env{'request.filename'};
6411: }
6412: my $metadata=&metadata($filename,$spacequalifierrest);
6413: if (defined($metadata)) { return $metadata; }
6414: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
6415: if (defined($metadata)) { return $metadata; }
6416:
6417: # ---------------------------------------------- fourth, look in rest pf course
6418: if ($symbparm && defined($courseid) &&
6419: $courseid eq $env{'request.course.id'}) {
6420: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
6421: $env{'course.'.$courseid.'.domain'},
6422: 'course',
6423: ($courselevelm,$courselevel));
6424: if (defined($coursereply)) { return $coursereply; }
6425: }
6426: # ------------------------------------------------------------------ Cascade up
6427: unless ($space eq '0') {
6428: my @parts=split(/_/,$space);
6429: my $id=pop(@parts);
6430: my $part=join('_',@parts);
6431: if ($part eq '') { $part='0'; }
6432: my $partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
6433: $symbparm,$udom,$uname,$section,1);
6434: if (defined($partgeneral)) { return $partgeneral; }
6435: }
6436: if ($recurse) { return undef; }
6437: my $pack_def=&packages_tab_default($filename,$varname);
6438: if (defined($pack_def)) { return $pack_def; }
6439:
6440: # ---------------------------------------------------- Any other user namespace
6441: } elsif ($realm eq 'environment') {
6442: # ----------------------------------------------------------------- environment
6443: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
6444: return $env{'environment.'.$spacequalifierrest};
6445: } else {
6446: if ($uname eq 'anonymous' && $udom eq '') {
6447: return '';
6448: }
6449: my %returnhash=&userenvironment($udom,$uname,
6450: $spacequalifierrest);
6451: return $returnhash{$spacequalifierrest};
6452: }
6453: } elsif ($realm eq 'system') {
6454: # ----------------------------------------------------------------- system.time
6455: if ($space eq 'time') {
6456: return time;
6457: }
6458: } elsif ($realm eq 'server') {
6459: # ----------------------------------------------------------------- system.time
6460: if ($space eq 'name') {
6461: return $ENV{'SERVER_NAME'};
6462: }
6463: }
6464: return '';
6465: }
6466:
6467: sub check_group_parms {
6468: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
6469: my @groupitems = ();
6470: my $resultitem;
6471: my @levels = ($symbparm,$mapparm,$what);
6472: foreach my $group (@{$groups}) {
6473: foreach my $level (@levels) {
6474: my $item = $courseid.'.['.$group.'].'.$level;
6475: push(@groupitems,$item);
6476: }
6477: }
6478: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
6479: $env{'course.'.$courseid.'.domain'},
6480: 'course',@groupitems);
6481: return $coursereply;
6482: }
6483:
6484: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
6485: my ($courseid,@groups) = @_;
6486: @groups = sort(@groups);
6487: return @groups;
6488: }
6489:
6490: sub packages_tab_default {
6491: my ($uri,$varname)=@_;
6492: my (undef,$part,$name)=split(/\./,$varname);
6493:
6494: my (@extension,@specifics,$do_default);
6495: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
6496: my ($pack_type,$pack_part)=split(/_/,$package,2);
6497: if ($pack_type eq 'default') {
6498: $do_default=1;
6499: } elsif ($pack_type eq 'extension') {
6500: push(@extension,[$package,$pack_type,$pack_part]);
6501: } elsif ($pack_part eq $part || $pack_type eq 'part') {
6502: # only look at packages defaults for packages that this id is
6503: push(@specifics,[$package,$pack_type,$pack_part]);
6504: }
6505: }
6506: # first look for a package that matches the requested part id
6507: foreach my $package (@specifics) {
6508: my (undef,$pack_type,$pack_part)=@{$package};
6509: next if ($pack_part ne $part);
6510: if (defined($packagetab{"$pack_type&$name&default"})) {
6511: return $packagetab{"$pack_type&$name&default"};
6512: }
6513: }
6514: # look for any possible matching non extension_ package
6515: foreach my $package (@specifics) {
6516: my (undef,$pack_type,$pack_part)=@{$package};
6517: if (defined($packagetab{"$pack_type&$name&default"})) {
6518: return $packagetab{"$pack_type&$name&default"};
6519: }
6520: if ($pack_type eq 'part') { $pack_part='0'; }
6521: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
6522: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
6523: }
6524: }
6525: # look for any posible extension_ match
6526: foreach my $package (@extension) {
6527: my ($package,$pack_type)=@{$package};
6528: if (defined($packagetab{"$pack_type&$name&default"})) {
6529: return $packagetab{"$pack_type&$name&default"};
6530: }
6531: if (defined($packagetab{$package."&$name&default"})) {
6532: return $packagetab{$package."&$name&default"};
6533: }
6534: }
6535: # look for a global default setting
6536: if ($do_default && defined($packagetab{"default&$name&default"})) {
6537: return $packagetab{"default&$name&default"};
6538: }
6539: return undef;
6540: }
6541:
6542: sub add_prefix_and_part {
6543: my ($prefix,$part)=@_;
6544: my $keyroot;
6545: if (defined($prefix) && $prefix !~ /^__/) {
6546: # prefix that has a part already
6547: $keyroot=$prefix;
6548: } elsif (defined($prefix)) {
6549: # prefix that is missing a part
6550: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
6551: } else {
6552: # no prefix at all
6553: if (defined($part)) { $keyroot='_'.$part; }
6554: }
6555: return $keyroot;
6556: }
6557:
6558: # ---------------------------------------------------------------- Get metadata
6559:
6560: my %metaentry;
6561: sub metadata {
6562: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
6563: $uri=&declutter($uri);
6564: # if it is a non metadata possible uri return quickly
6565: if (($uri eq '') ||
6566: (($uri =~ m|^/*adm/|) &&
6567: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
6568: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ /^~/) ||
6569: ($uri =~ m|home/$match_username/public_html/|)) {
6570: return undef;
6571: }
6572: my $filename=$uri;
6573: $uri=~s/\.meta$//;
6574: #
6575: # Is the metadata already cached?
6576: # Look at timestamp of caching
6577: # Everything is cached by the main uri, libraries are never directly cached
6578: #
6579: if (!defined($liburi)) {
6580: my ($result,$cached)=&is_cached_new('meta',$uri);
6581: if (defined($cached)) { return $result->{':'.$what}; }
6582: }
6583: {
6584: #
6585: # Is this a recursive call for a library?
6586: #
6587: # if (! exists($metacache{$uri})) {
6588: # $metacache{$uri}={};
6589: # }
6590: if ($liburi) {
6591: $liburi=&declutter($liburi);
6592: $filename=$liburi;
6593: } else {
6594: &devalidate_cache_new('meta',$uri);
6595: undef(%metaentry);
6596: }
6597: my %metathesekeys=();
6598: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
6599: my $metastring;
6600: if ($uri !~ m -^(editupload)/-) {
6601: my $file=&filelocation('',&clutter($filename));
6602: #push(@{$metaentry{$uri.'.file'}},$file);
6603: $metastring=&getfile($file);
6604: }
6605: my $parser=HTML::LCParser->new(\$metastring);
6606: my $token;
6607: undef %metathesekeys;
6608: while ($token=$parser->get_token) {
6609: if ($token->[0] eq 'S') {
6610: if (defined($token->[2]->{'package'})) {
6611: #
6612: # This is a package - get package info
6613: #
6614: my $package=$token->[2]->{'package'};
6615: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
6616: if (defined($token->[2]->{'id'})) {
6617: $keyroot.='_'.$token->[2]->{'id'};
6618: }
6619: if ($metaentry{':packages'}) {
6620: $metaentry{':packages'}.=','.$package.$keyroot;
6621: } else {
6622: $metaentry{':packages'}=$package.$keyroot;
6623: }
6624: foreach my $pack_entry (keys(%packagetab)) {
6625: my $part=$keyroot;
6626: $part=~s/^\_//;
6627: if ($pack_entry=~/^\Q$package\E\&/ ||
6628: $pack_entry=~/^\Q$package\E_0\&/) {
6629: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
6630: # ignore package.tab specified default values
6631: # here &package_tab_default() will fetch those
6632: if ($subp eq 'default') { next; }
6633: my $value=$packagetab{$pack_entry};
6634: my $unikey;
6635: if ($pack =~ /_0$/) {
6636: $unikey='parameter_0_'.$name;
6637: $part=0;
6638: } else {
6639: $unikey='parameter'.$keyroot.'_'.$name;
6640: }
6641: if ($subp eq 'display') {
6642: $value.=' [Part: '.$part.']';
6643: }
6644: $metaentry{':'.$unikey.'.part'}=$part;
6645: $metathesekeys{$unikey}=1;
6646: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
6647: $metaentry{':'.$unikey.'.'.$subp}=$value;
6648: }
6649: if (defined($metaentry{':'.$unikey.'.default'})) {
6650: $metaentry{':'.$unikey}=
6651: $metaentry{':'.$unikey.'.default'};
6652: }
6653: }
6654: }
6655: } else {
6656: #
6657: # This is not a package - some other kind of start tag
6658: #
6659: my $entry=$token->[1];
6660: my $unikey;
6661: if ($entry eq 'import') {
6662: $unikey='';
6663: } else {
6664: $unikey=$entry;
6665: }
6666: $unikey.=&add_prefix_and_part($prefix,$token->[2]->{'part'});
6667:
6668: if (defined($token->[2]->{'id'})) {
6669: $unikey.='_'.$token->[2]->{'id'};
6670: }
6671:
6672: if ($entry eq 'import') {
6673: #
6674: # Importing a library here
6675: #
6676: if ($depthcount<20) {
6677: my $location=$parser->get_text('/import');
6678: my $dir=$filename;
6679: $dir=~s|[^/]*$||;
6680: $location=&filelocation($dir,$location);
6681: my $metadata =
6682: &metadata($uri,'keys', $location,$unikey,
6683: $depthcount+1);
6684: foreach my $meta (split(',',$metadata)) {
6685: $metaentry{':'.$meta}=$metaentry{':'.$meta};
6686: $metathesekeys{$meta}=1;
6687: }
6688: }
6689: } else {
6690:
6691: if (defined($token->[2]->{'name'})) {
6692: $unikey.='_'.$token->[2]->{'name'};
6693: }
6694: $metathesekeys{$unikey}=1;
6695: foreach my $param (@{$token->[3]}) {
6696: $metaentry{':'.$unikey.'.'.$param} =
6697: $token->[2]->{$param};
6698: }
6699: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
6700: my $default=$metaentry{':'.$unikey.'.default'};
6701: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
6702: # only ws inside the tag, and not in default, so use default
6703: # as value
6704: $metaentry{':'.$unikey}=$default;
6705: } elsif ( $internaltext =~ /\S/ ) {
6706: # something interesting inside the tag
6707: $metaentry{':'.$unikey}=$internaltext;
6708: } else {
6709: # no interesting values, don't set a default
6710: }
6711: # end of not-a-package not-a-library import
6712: }
6713: # end of not-a-package start tag
6714: }
6715: # the next is the end of "start tag"
6716: }
6717: }
6718: my ($extension) = ($uri =~ /\.(\w+)$/);
6719: $extension = lc($extension);
6720: if ($extension eq 'htm') { $extension='html'; }
6721:
6722: foreach my $key (keys(%packagetab)) {
6723: #no specific packages #how's our extension
6724: if ($key!~/^extension_\Q$extension\E&/) { next; }
6725: &metadata_create_package_def($uri,$key,'extension_'.$extension,
6726: \%metathesekeys);
6727: }
6728:
6729: if (!exists($metaentry{':packages'})
6730: || $packagetab{"import_defaults&extension_$extension"}) {
6731: foreach my $key (keys(%packagetab)) {
6732: #no specific packages well let's get default then
6733: if ($key!~/^default&/) { next; }
6734: &metadata_create_package_def($uri,$key,'default',
6735: \%metathesekeys);
6736: }
6737: }
6738: # are there custom rights to evaluate
6739: if ($metaentry{':copyright'} eq 'custom') {
6740:
6741: #
6742: # Importing a rights file here
6743: #
6744: unless ($depthcount) {
6745: my $location=$metaentry{':customdistributionfile'};
6746: my $dir=$filename;
6747: $dir=~s|[^/]*$||;
6748: $location=&filelocation($dir,$location);
6749: my $rights_metadata =
6750: &metadata($uri,'keys',$location,'_rights',
6751: $depthcount+1);
6752: foreach my $rights (split(',',$rights_metadata)) {
6753: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
6754: $metathesekeys{$rights}=1;
6755: }
6756: }
6757: }
6758: # uniqifiy package listing
6759: my %seen;
6760: my @uniq_packages =
6761: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
6762: $metaentry{':packages'} = join(',',@uniq_packages);
6763:
6764: $metaentry{':keys'} = join(',',keys(%metathesekeys));
6765: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
6766: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
6767: &do_cache_new('meta',$uri,\%metaentry,60*60);
6768: # this is the end of "was not already recently cached
6769: }
6770: return $metaentry{':'.$what};
6771: }
6772:
6773: sub metadata_create_package_def {
6774: my ($uri,$key,$package,$metathesekeys)=@_;
6775: my ($pack,$name,$subp)=split(/\&/,$key);
6776: if ($subp eq 'default') { next; }
6777:
6778: if (defined($metaentry{':packages'})) {
6779: $metaentry{':packages'}.=','.$package;
6780: } else {
6781: $metaentry{':packages'}=$package;
6782: }
6783: my $value=$packagetab{$key};
6784: my $unikey;
6785: $unikey='parameter_0_'.$name;
6786: $metaentry{':'.$unikey.'.part'}=0;
6787: $$metathesekeys{$unikey}=1;
6788: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
6789: $metaentry{':'.$unikey.'.'.$subp}=$value;
6790: }
6791: if (defined($metaentry{':'.$unikey.'.default'})) {
6792: $metaentry{':'.$unikey}=
6793: $metaentry{':'.$unikey.'.default'};
6794: }
6795: }
6796:
6797: sub metadata_generate_part0 {
6798: my ($metadata,$metacache,$uri) = @_;
6799: my %allnames;
6800: foreach my $metakey (keys(%$metadata)) {
6801: if ($metakey=~/^parameter\_(.*)/) {
6802: my $part=$$metacache{':'.$metakey.'.part'};
6803: my $name=$$metacache{':'.$metakey.'.name'};
6804: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
6805: $allnames{$name}=$part;
6806: }
6807: }
6808: }
6809: foreach my $name (keys(%allnames)) {
6810: $$metadata{"parameter_0_$name"}=1;
6811: my $key=":parameter_0_$name";
6812: $$metacache{"$key.part"}='0';
6813: $$metacache{"$key.name"}=$name;
6814: $$metacache{"$key.type"}=$$metacache{':parameter_'.
6815: $allnames{$name}.'_'.$name.
6816: '.type'};
6817: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
6818: '.display'};
6819: my $expr='[Part: '.$allnames{$name}.']';
6820: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
6821: $$metacache{"$key.display"}=$olddis;
6822: }
6823: }
6824:
6825: # ------------------------------------------------------ Devalidate title cache
6826:
6827: sub devalidate_title_cache {
6828: my ($url)=@_;
6829: if (!$env{'request.course.id'}) { return; }
6830: my $symb=&symbread($url);
6831: if (!$symb) { return; }
6832: my $key=$env{'request.course.id'}."\0".$symb;
6833: &devalidate_cache_new('title',$key);
6834: }
6835:
6836: # ------------------------------------------------- Get the title of a resource
6837:
6838: sub gettitle {
6839: my $urlsymb=shift;
6840: my $symb=&symbread($urlsymb);
6841: if ($symb) {
6842: my $key=$env{'request.course.id'}."\0".$symb;
6843: my ($result,$cached)=&is_cached_new('title',$key);
6844: if (defined($cached)) {
6845: return $result;
6846: }
6847: my ($map,$resid,$url)=&decode_symb($symb);
6848: my $title='';
6849: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
6850: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
6851: } else {
6852: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
6853: &GDBM_READER(),0640)) {
6854: my $mapid=$bighash{'map_pc_'.&clutter($map)};
6855: $title=$bighash{'title_'.$mapid.'.'.$resid};
6856: untie(%bighash);
6857: }
6858: }
6859: $title=~s/\&colon\;/\:/gs;
6860: if ($title) {
6861: return &do_cache_new('title',$key,$title,600);
6862: }
6863: $urlsymb=$url;
6864: }
6865: my $title=&metadata($urlsymb,'title');
6866: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
6867: return $title;
6868: }
6869:
6870: sub get_slot {
6871: my ($which,$cnum,$cdom)=@_;
6872: if (!$cnum || !$cdom) {
6873: (undef,my $courseid)=&whichuser();
6874: $cdom=$env{'course.'.$courseid.'.domain'};
6875: $cnum=$env{'course.'.$courseid.'.num'};
6876: }
6877: my $key=join("\0",'slots',$cdom,$cnum,$which);
6878: my %slotinfo;
6879: if (exists($remembered{$key})) {
6880: $slotinfo{$which} = $remembered{$key};
6881: } else {
6882: %slotinfo=&get('slots',[$which],$cdom,$cnum);
6883: &Apache::lonhomework::showhash(%slotinfo);
6884: my ($tmp)=keys(%slotinfo);
6885: if ($tmp=~/^error:/) { return (); }
6886: $remembered{$key} = $slotinfo{$which};
6887: }
6888: if (ref($slotinfo{$which}) eq 'HASH') {
6889: return %{$slotinfo{$which}};
6890: }
6891: return $slotinfo{$which};
6892: }
6893: # ------------------------------------------------- Update symbolic store links
6894:
6895: sub symblist {
6896: my ($mapname,%newhash)=@_;
6897: $mapname=&deversion(&declutter($mapname));
6898: my %hash;
6899: if (($env{'request.course.fn'}) && (%newhash)) {
6900: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
6901: &GDBM_WRCREAT(),0640)) {
6902: foreach my $url (keys %newhash) {
6903: next if ($url eq 'last_known'
6904: && $env{'form.no_update_last_known'});
6905: $hash{declutter($url)}=&encode_symb($mapname,
6906: $newhash{$url}->[1],
6907: $newhash{$url}->[0]);
6908: }
6909: if (untie(%hash)) {
6910: return 'ok';
6911: }
6912: }
6913: }
6914: return 'error';
6915: }
6916:
6917: # --------------------------------------------------------------- Verify a symb
6918:
6919: sub symbverify {
6920: my ($symb,$thisurl)=@_;
6921: my $thisfn=$thisurl;
6922: $thisfn=&declutter($thisfn);
6923: # direct jump to resource in page or to a sequence - will construct own symbs
6924: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
6925: # check URL part
6926: my ($map,$resid,$url)=&decode_symb($symb);
6927:
6928: unless ($url eq $thisfn) { return 0; }
6929:
6930: $symb=&symbclean($symb);
6931: $thisurl=&deversion($thisurl);
6932: $thisfn=&deversion($thisfn);
6933:
6934: my %bighash;
6935: my $okay=0;
6936:
6937: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
6938: &GDBM_READER(),0640)) {
6939: my $ids=$bighash{'ids_'.&clutter($thisurl)};
6940: unless ($ids) {
6941: $ids=$bighash{'ids_/'.$thisurl};
6942: }
6943: if ($ids) {
6944: # ------------------------------------------------------------------- Has ID(s)
6945: foreach my $id (split(/\,/,$ids)) {
6946: my ($mapid,$resid)=split(/\./,$id);
6947: if (
6948: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
6949: eq $symb) {
6950: if (($env{'request.role.adv'}) ||
6951: $bighash{'encrypted_'.$id} eq $env{'request.enc'}) {
6952: $okay=1;
6953: }
6954: }
6955: }
6956: }
6957: untie(%bighash);
6958: }
6959: return $okay;
6960: }
6961:
6962: # --------------------------------------------------------------- Clean-up symb
6963:
6964: sub symbclean {
6965: my $symb=shift;
6966: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
6967: # remove version from map
6968: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
6969:
6970: # remove version from URL
6971: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
6972:
6973: # remove wrapper
6974:
6975: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
6976: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
6977: return $symb;
6978: }
6979:
6980: # ---------------------------------------------- Split symb to find map and url
6981:
6982: sub encode_symb {
6983: my ($map,$resid,$url)=@_;
6984: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
6985: }
6986:
6987: sub decode_symb {
6988: my $symb=shift;
6989: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
6990: my ($map,$resid,$url)=split(/___/,$symb);
6991: return (&fixversion($map),$resid,&fixversion($url));
6992: }
6993:
6994: sub fixversion {
6995: my $fn=shift;
6996: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
6997: my %bighash;
6998: my $uri=&clutter($fn);
6999: my $key=$env{'request.course.id'}.'_'.$uri;
7000: # is this cached?
7001: my ($result,$cached)=&is_cached_new('courseresversion',$key);
7002: if (defined($cached)) { return $result; }
7003: # unfortunately not cached, or expired
7004: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7005: &GDBM_READER(),0640)) {
7006: if ($bighash{'version_'.$uri}) {
7007: my $version=$bighash{'version_'.$uri};
7008: unless (($version eq 'mostrecent') ||
7009: ($version==&getversion($uri))) {
7010: $uri=~s/\.(\w+)$/\.$version\.$1/;
7011: }
7012: }
7013: untie %bighash;
7014: }
7015: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
7016: }
7017:
7018: sub deversion {
7019: my $url=shift;
7020: $url=~s/\.\d+\.(\w+)$/\.$1/;
7021: return $url;
7022: }
7023:
7024: # ------------------------------------------------------ Return symb list entry
7025:
7026: sub symbread {
7027: my ($thisfn,$donotrecurse)=@_;
7028: my $cache_str='request.symbread.cached.'.$thisfn;
7029: if (defined($env{$cache_str})) { return $env{$cache_str}; }
7030: # no filename provided? try from environment
7031: unless ($thisfn) {
7032: if ($env{'request.symb'}) {
7033: return $env{$cache_str}=&symbclean($env{'request.symb'});
7034: }
7035: $thisfn=$env{'request.filename'};
7036: }
7037: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
7038: # is that filename actually a symb? Verify, clean, and return
7039: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
7040: if (&symbverify($thisfn,$1)) {
7041: return $env{$cache_str}=&symbclean($thisfn);
7042: }
7043: }
7044: $thisfn=declutter($thisfn);
7045: my %hash;
7046: my %bighash;
7047: my $syval='';
7048: if (($env{'request.course.fn'}) && ($thisfn)) {
7049: my $targetfn = $thisfn;
7050: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
7051: $targetfn = 'adm/wrapper/'.$thisfn;
7052: }
7053: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
7054: $targetfn=$1;
7055: }
7056: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
7057: &GDBM_READER(),0640)) {
7058: $syval=$hash{$targetfn};
7059: untie(%hash);
7060: }
7061: # ---------------------------------------------------------- There was an entry
7062: if ($syval) {
7063: #unless ($syval=~/\_\d+$/) {
7064: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
7065: #&appenv('request.ambiguous' => $thisfn);
7066: #return $env{$cache_str}='';
7067: #}
7068: #$syval.=$1;
7069: #}
7070: } else {
7071: # ------------------------------------------------------- Was not in symb table
7072: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7073: &GDBM_READER(),0640)) {
7074: # ---------------------------------------------- Get ID(s) for current resource
7075: my $ids=$bighash{'ids_'.&clutter($thisfn)};
7076: unless ($ids) {
7077: $ids=$bighash{'ids_/'.$thisfn};
7078: }
7079: unless ($ids) {
7080: # alias?
7081: $ids=$bighash{'mapalias_'.$thisfn};
7082: }
7083: if ($ids) {
7084: # ------------------------------------------------------------------- Has ID(s)
7085: my @possibilities=split(/\,/,$ids);
7086: if ($#possibilities==0) {
7087: # ----------------------------------------------- There is only one possibility
7088: my ($mapid,$resid)=split(/\./,$ids);
7089: $syval=&encode_symb($bighash{'map_id_'.$mapid},
7090: $resid,$thisfn);
7091: } elsif (!$donotrecurse) {
7092: # ------------------------------------------ There is more than one possibility
7093: my $realpossible=0;
7094: foreach my $id (@possibilities) {
7095: my $file=$bighash{'src_'.$id};
7096: if (&allowed('bre',$file)) {
7097: my ($mapid,$resid)=split(/\./,$id);
7098: if ($bighash{'map_type_'.$mapid} ne 'page') {
7099: $realpossible++;
7100: $syval=&encode_symb($bighash{'map_id_'.$mapid},
7101: $resid,$thisfn);
7102: }
7103: }
7104: }
7105: if ($realpossible!=1) { $syval=''; }
7106: } else {
7107: $syval='';
7108: }
7109: }
7110: untie(%bighash)
7111: }
7112: }
7113: if ($syval) {
7114: return $env{$cache_str}=$syval;
7115: }
7116: }
7117: &appenv('request.ambiguous' => $thisfn);
7118: return $env{$cache_str}='';
7119: }
7120:
7121: # ---------------------------------------------------------- Return random seed
7122:
7123: sub numval {
7124: my $txt=shift;
7125: $txt=~tr/A-J/0-9/;
7126: $txt=~tr/a-j/0-9/;
7127: $txt=~tr/K-T/0-9/;
7128: $txt=~tr/k-t/0-9/;
7129: $txt=~tr/U-Z/0-5/;
7130: $txt=~tr/u-z/0-5/;
7131: $txt=~s/\D//g;
7132: if ($_64bit) { if ($txt > 2**32) { return -1; } }
7133: return int($txt);
7134: }
7135:
7136: sub numval2 {
7137: my $txt=shift;
7138: $txt=~tr/A-J/0-9/;
7139: $txt=~tr/a-j/0-9/;
7140: $txt=~tr/K-T/0-9/;
7141: $txt=~tr/k-t/0-9/;
7142: $txt=~tr/U-Z/0-5/;
7143: $txt=~tr/u-z/0-5/;
7144: $txt=~s/\D//g;
7145: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
7146: my $total;
7147: foreach my $val (@txts) { $total+=$val; }
7148: if ($_64bit) { if ($total > 2**32) { return -1; } }
7149: return int($total);
7150: }
7151:
7152: sub numval3 {
7153: use integer;
7154: my $txt=shift;
7155: $txt=~tr/A-J/0-9/;
7156: $txt=~tr/a-j/0-9/;
7157: $txt=~tr/K-T/0-9/;
7158: $txt=~tr/k-t/0-9/;
7159: $txt=~tr/U-Z/0-5/;
7160: $txt=~tr/u-z/0-5/;
7161: $txt=~s/\D//g;
7162: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
7163: my $total;
7164: foreach my $val (@txts) { $total+=$val; }
7165: if ($_64bit) { $total=(($total<<32)>>32); }
7166: return $total;
7167: }
7168:
7169: sub digest {
7170: my ($data)=@_;
7171: my $digest=&Digest::MD5::md5($data);
7172: my ($a,$b,$c,$d)=unpack("iiii",$digest);
7173: my ($e,$f);
7174: {
7175: use integer;
7176: $e=($a+$b);
7177: $f=($c+$d);
7178: if ($_64bit) {
7179: $e=(($e<<32)>>32);
7180: $f=(($f<<32)>>32);
7181: }
7182: }
7183: if (wantarray) {
7184: return ($e,$f);
7185: } else {
7186: my $g;
7187: {
7188: use integer;
7189: $g=($e+$f);
7190: if ($_64bit) {
7191: $g=(($g<<32)>>32);
7192: }
7193: }
7194: return $g;
7195: }
7196: }
7197:
7198: sub latest_rnd_algorithm_id {
7199: return '64bit5';
7200: }
7201:
7202: sub get_rand_alg {
7203: my ($courseid)=@_;
7204: if (!$courseid) { $courseid=(&whichuser())[1]; }
7205: if ($courseid) {
7206: return $env{"course.$courseid.rndseed"};
7207: }
7208: return &latest_rnd_algorithm_id();
7209: }
7210:
7211: sub validCODE {
7212: my ($CODE)=@_;
7213: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
7214: return 0;
7215: }
7216:
7217: sub getCODE {
7218: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
7219: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
7220: defined($Apache::lonhomework::parsing_a_task) ) &&
7221: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
7222: return $Apache::lonhomework::history{'resource.CODE'};
7223: }
7224: return undef;
7225: }
7226:
7227: sub rndseed {
7228: my ($symb,$courseid,$domain,$username)=@_;
7229: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
7230: if (!defined($symb)) {
7231: unless ($symb=$wsymb) { return time; }
7232: }
7233: if (!$courseid) { $courseid=$wcourseid; }
7234: if (!$domain) { $domain=$wdomain; }
7235: if (!$username) { $username=$wusername }
7236: my $which=&get_rand_alg();
7237:
7238: if (defined(&getCODE())) {
7239: if ($which eq '64bit5') {
7240: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
7241: } elsif ($which eq '64bit4') {
7242: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
7243: } else {
7244: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
7245: }
7246: } elsif ($which eq '64bit5') {
7247: return &rndseed_64bit5($symb,$courseid,$domain,$username);
7248: } elsif ($which eq '64bit4') {
7249: return &rndseed_64bit4($symb,$courseid,$domain,$username);
7250: } elsif ($which eq '64bit3') {
7251: return &rndseed_64bit3($symb,$courseid,$domain,$username);
7252: } elsif ($which eq '64bit2') {
7253: return &rndseed_64bit2($symb,$courseid,$domain,$username);
7254: } elsif ($which eq '64bit') {
7255: return &rndseed_64bit($symb,$courseid,$domain,$username);
7256: }
7257: return &rndseed_32bit($symb,$courseid,$domain,$username);
7258: }
7259:
7260: sub rndseed_32bit {
7261: my ($symb,$courseid,$domain,$username)=@_;
7262: {
7263: use integer;
7264: my $symbchck=unpack("%32C*",$symb) << 27;
7265: my $symbseed=numval($symb) << 22;
7266: my $namechck=unpack("%32C*",$username) << 17;
7267: my $nameseed=numval($username) << 12;
7268: my $domainseed=unpack("%32C*",$domain) << 7;
7269: my $courseseed=unpack("%32C*",$courseid);
7270: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
7271: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7272: #&logthis("rndseed :$num:$symb");
7273: if ($_64bit) { $num=(($num<<32)>>32); }
7274: return $num;
7275: }
7276: }
7277:
7278: sub rndseed_64bit {
7279: my ($symb,$courseid,$domain,$username)=@_;
7280: {
7281: use integer;
7282: my $symbchck=unpack("%32S*",$symb) << 21;
7283: my $symbseed=numval($symb) << 10;
7284: my $namechck=unpack("%32S*",$username);
7285:
7286: my $nameseed=numval($username) << 21;
7287: my $domainseed=unpack("%32S*",$domain) << 10;
7288: my $courseseed=unpack("%32S*",$courseid);
7289:
7290: my $num1=$symbchck+$symbseed+$namechck;
7291: my $num2=$nameseed+$domainseed+$courseseed;
7292: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7293: #&logthis("rndseed :$num:$symb");
7294: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7295: return "$num1,$num2";
7296: }
7297: }
7298:
7299: sub rndseed_64bit2 {
7300: my ($symb,$courseid,$domain,$username)=@_;
7301: {
7302: use integer;
7303: # strings need to be an even # of cahracters long, it it is odd the
7304: # last characters gets thrown away
7305: my $symbchck=unpack("%32S*",$symb.' ') << 21;
7306: my $symbseed=numval($symb) << 10;
7307: my $namechck=unpack("%32S*",$username.' ');
7308:
7309: my $nameseed=numval($username) << 21;
7310: my $domainseed=unpack("%32S*",$domain.' ') << 10;
7311: my $courseseed=unpack("%32S*",$courseid.' ');
7312:
7313: my $num1=$symbchck+$symbseed+$namechck;
7314: my $num2=$nameseed+$domainseed+$courseseed;
7315: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7316: #&logthis("rndseed :$num:$symb");
7317: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7318: return "$num1,$num2";
7319: }
7320: }
7321:
7322: sub rndseed_64bit3 {
7323: my ($symb,$courseid,$domain,$username)=@_;
7324: {
7325: use integer;
7326: # strings need to be an even # of cahracters long, it it is odd the
7327: # last characters gets thrown away
7328: my $symbchck=unpack("%32S*",$symb.' ') << 21;
7329: my $symbseed=numval2($symb) << 10;
7330: my $namechck=unpack("%32S*",$username.' ');
7331:
7332: my $nameseed=numval2($username) << 21;
7333: my $domainseed=unpack("%32S*",$domain.' ') << 10;
7334: my $courseseed=unpack("%32S*",$courseid.' ');
7335:
7336: my $num1=$symbchck+$symbseed+$namechck;
7337: my $num2=$nameseed+$domainseed+$courseseed;
7338: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7339: #&logthis("rndseed :$num1:$num2:$_64bit");
7340: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7341:
7342: return "$num1:$num2";
7343: }
7344: }
7345:
7346: sub rndseed_64bit4 {
7347: my ($symb,$courseid,$domain,$username)=@_;
7348: {
7349: use integer;
7350: # strings need to be an even # of cahracters long, it it is odd the
7351: # last characters gets thrown away
7352: my $symbchck=unpack("%32S*",$symb.' ') << 21;
7353: my $symbseed=numval3($symb) << 10;
7354: my $namechck=unpack("%32S*",$username.' ');
7355:
7356: my $nameseed=numval3($username) << 21;
7357: my $domainseed=unpack("%32S*",$domain.' ') << 10;
7358: my $courseseed=unpack("%32S*",$courseid.' ');
7359:
7360: my $num1=$symbchck+$symbseed+$namechck;
7361: my $num2=$nameseed+$domainseed+$courseseed;
7362: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7363: #&logthis("rndseed :$num1:$num2:$_64bit");
7364: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7365:
7366: return "$num1:$num2";
7367: }
7368: }
7369:
7370: sub rndseed_64bit5 {
7371: my ($symb,$courseid,$domain,$username)=@_;
7372: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
7373: return "$num1:$num2";
7374: }
7375:
7376: sub rndseed_CODE_64bit {
7377: my ($symb,$courseid,$domain,$username)=@_;
7378: {
7379: use integer;
7380: my $symbchck=unpack("%32S*",$symb.' ') << 16;
7381: my $symbseed=numval2($symb);
7382: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
7383: my $CODEseed=numval(&getCODE());
7384: my $courseseed=unpack("%32S*",$courseid.' ');
7385: my $num1=$symbseed+$CODEchck;
7386: my $num2=$CODEseed+$courseseed+$symbchck;
7387: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
7388: #&logthis("rndseed :$num1:$num2:$symb");
7389: if ($_64bit) { $num1=(($num1<<32)>>32); }
7390: if ($_64bit) { $num2=(($num2<<32)>>32); }
7391: return "$num1:$num2";
7392: }
7393: }
7394:
7395: sub rndseed_CODE_64bit4 {
7396: my ($symb,$courseid,$domain,$username)=@_;
7397: {
7398: use integer;
7399: my $symbchck=unpack("%32S*",$symb.' ') << 16;
7400: my $symbseed=numval3($symb);
7401: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
7402: my $CODEseed=numval3(&getCODE());
7403: my $courseseed=unpack("%32S*",$courseid.' ');
7404: my $num1=$symbseed+$CODEchck;
7405: my $num2=$CODEseed+$courseseed+$symbchck;
7406: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
7407: #&logthis("rndseed :$num1:$num2:$symb");
7408: if ($_64bit) { $num1=(($num1<<32)>>32); }
7409: if ($_64bit) { $num2=(($num2<<32)>>32); }
7410: return "$num1:$num2";
7411: }
7412: }
7413:
7414: sub rndseed_CODE_64bit5 {
7415: my ($symb,$courseid,$domain,$username)=@_;
7416: my $code = &getCODE();
7417: my ($num1,$num2)=&digest("$symb,$courseid,$code");
7418: return "$num1:$num2";
7419: }
7420:
7421: sub setup_random_from_rndseed {
7422: my ($rndseed)=@_;
7423: if ($rndseed =~/([,:])/) {
7424: my ($num1,$num2)=split(/[,:]/,$rndseed);
7425: &Math::Random::random_set_seed(abs($num1),abs($num2));
7426: } else {
7427: &Math::Random::random_set_seed_from_phrase($rndseed);
7428: }
7429: }
7430:
7431: sub latest_receipt_algorithm_id {
7432: return 'receipt3';
7433: }
7434:
7435: sub recunique {
7436: my $fucourseid=shift;
7437: my $unique;
7438: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
7439: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
7440: $unique=$env{"course.$fucourseid.internal.encseed"};
7441: } else {
7442: $unique=$perlvar{'lonReceipt'};
7443: }
7444: return unpack("%32C*",$unique);
7445: }
7446:
7447: sub recprefix {
7448: my $fucourseid=shift;
7449: my $prefix;
7450: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
7451: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
7452: $prefix=$env{"course.$fucourseid.internal.encpref"};
7453: } else {
7454: $prefix=$perlvar{'lonHostID'};
7455: }
7456: return unpack("%32C*",$prefix);
7457: }
7458:
7459: sub ireceipt {
7460: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
7461:
7462: my $return =&recprefix($fucourseid).'-';
7463:
7464: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
7465: $env{'request.state'} eq 'construct') {
7466: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
7467: return $return;
7468: }
7469:
7470: my $cuname=unpack("%32C*",$funame);
7471: my $cudom=unpack("%32C*",$fudom);
7472: my $cucourseid=unpack("%32C*",$fucourseid);
7473: my $cusymb=unpack("%32C*",$fusymb);
7474: my $cunique=&recunique($fucourseid);
7475: my $cpart=unpack("%32S*",$part);
7476: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
7477:
7478: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
7479:
7480: $return.= ($cunique%$cuname+
7481: $cunique%$cudom+
7482: $cusymb%$cuname+
7483: $cusymb%$cudom+
7484: $cucourseid%$cuname+
7485: $cucourseid%$cudom+
7486: $cpart%$cuname+
7487: $cpart%$cudom);
7488: } else {
7489: $return.= ($cunique%$cuname+
7490: $cunique%$cudom+
7491: $cusymb%$cuname+
7492: $cusymb%$cudom+
7493: $cucourseid%$cuname+
7494: $cucourseid%$cudom);
7495: }
7496: return $return;
7497: }
7498:
7499: sub receipt {
7500: my ($part)=@_;
7501: my ($symb,$courseid,$domain,$name) = &whichuser();
7502: return &ireceipt($name,$domain,$courseid,$symb,$part);
7503: }
7504:
7505: sub whichuser {
7506: my ($passedsymb)=@_;
7507: my ($symb,$courseid,$domain,$name,$publicuser);
7508: if (defined($env{'form.grade_symb'})) {
7509: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
7510: my $allowed=&allowed('vgr',$tmp_courseid);
7511: if (!$allowed &&
7512: exists($env{'request.course.sec'}) &&
7513: $env{'request.course.sec'} !~ /^\s*$/) {
7514: $allowed=&allowed('vgr',$tmp_courseid.
7515: '/'.$env{'request.course.sec'});
7516: }
7517: if ($allowed) {
7518: ($symb)=&get_env_multiple('form.grade_symb');
7519: $courseid=$tmp_courseid;
7520: ($domain)=&get_env_multiple('form.grade_domain');
7521: ($name)=&get_env_multiple('form.grade_username');
7522: return ($symb,$courseid,$domain,$name,$publicuser);
7523: }
7524: }
7525: if (!$passedsymb) {
7526: $symb=&symbread();
7527: } else {
7528: $symb=$passedsymb;
7529: }
7530: $courseid=$env{'request.course.id'};
7531: $domain=$env{'user.domain'};
7532: $name=$env{'user.name'};
7533: if ($name eq 'public' && $domain eq 'public') {
7534: if (!defined($env{'form.username'})) {
7535: $env{'form.username'}.=time.rand(10000000);
7536: }
7537: $name.=$env{'form.username'};
7538: }
7539: return ($symb,$courseid,$domain,$name,$publicuser);
7540:
7541: }
7542:
7543: # ------------------------------------------------------------ Serves up a file
7544: # returns either the contents of the file or
7545: # -1 if the file doesn't exist
7546: #
7547: # if the target is a file that was uploaded via DOCS,
7548: # a check will be made to see if a current copy exists on the local server,
7549: # if it does this will be served, otherwise a copy will be retrieved from
7550: # the home server for the course and stored in /home/httpd/html/userfiles on
7551: # the local server.
7552:
7553: sub getfile {
7554: my ($file) = @_;
7555: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
7556: &repcopy($file);
7557: return &readfile($file);
7558: }
7559:
7560: sub repcopy_userfile {
7561: my ($file)=@_;
7562: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
7563: if ($file =~ m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
7564: my ($cdom,$cnum,$filename) =
7565: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
7566: my $uri="/uploaded/$cdom/$cnum/$filename";
7567: if (-e "$file") {
7568: # we already have a local copy, check it out
7569: my @fileinfo = stat($file);
7570: my $rtncode;
7571: my $info;
7572: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
7573: if ($lwpresp ne 'ok') {
7574: # there is no such file anymore, even though we had a local copy
7575: if ($rtncode eq '404') {
7576: unlink($file);
7577: }
7578: return -1;
7579: }
7580: if ($info < $fileinfo[9]) {
7581: # nice, the file we have is up-to-date, just say okay
7582: return 'ok';
7583: } else {
7584: # the file is outdated, get rid of it
7585: unlink($file);
7586: }
7587: }
7588: # one way or the other, at this point, we don't have the file
7589: # construct the correct path for the file
7590: my @parts = ($cdom,$cnum);
7591: if ($filename =~ m|^(.+)/[^/]+$|) {
7592: push @parts, split(/\//,$1);
7593: }
7594: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
7595: foreach my $part (@parts) {
7596: $path .= '/'.$part;
7597: if (!-e $path) {
7598: mkdir($path,0770);
7599: }
7600: }
7601: # now the path exists for sure
7602: # get a user agent
7603: my $ua=new LWP::UserAgent;
7604: my $transferfile=$file.'.in.transfer';
7605: # FIXME: this should flock
7606: if (-e $transferfile) { return 'ok'; }
7607: my $request;
7608: $uri=~s/^\///;
7609: $request=new HTTP::Request('GET','http://'.&hostname(&homeserver($cnum,$cdom)).'/raw/'.$uri);
7610: my $response=$ua->request($request,$transferfile);
7611: # did it work?
7612: if ($response->is_error()) {
7613: unlink($transferfile);
7614: &logthis("Userfile repcopy failed for $uri");
7615: return -1;
7616: }
7617: # worked, rename the transfer file
7618: rename($transferfile,$file);
7619: return 'ok';
7620: }
7621:
7622: sub tokenwrapper {
7623: my $uri=shift;
7624: $uri=~s|^http\://([^/]+)||;
7625: $uri=~s|^/||;
7626: $env{'user.environment'}=~/\/([^\/]+)\.id/;
7627: my $token=$1;
7628: my (undef,$udom,$uname,$file)=split('/',$uri,4);
7629: if ($udom && $uname && $file) {
7630: $file=~s|(\?\.*)*$||;
7631: &appenv("userfile.$udom/$uname/$file" => $env{'request.course.id'});
7632: return 'http://'.&hostname(&homeserver($uname,$udom)).'/'.$uri.
7633: (($uri=~/\?/)?'&':'?').'token='.$token.
7634: '&tokenissued='.$perlvar{'lonHostID'};
7635: } else {
7636: return '/adm/notfound.html';
7637: }
7638: }
7639:
7640: # call with reqtype HEAD: get last modification time
7641: # call with reqtype GET: get the file contents
7642: # Do not call this with reqtype GET for large files! It loads everything into memory
7643: #
7644: sub getuploaded {
7645: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
7646: $uri=~s/^\///;
7647: $uri = 'http://'.&hostname(&homeserver($cnum,$cdom)).'/raw/'.$uri;
7648: my $ua=new LWP::UserAgent;
7649: my $request=new HTTP::Request($reqtype,$uri);
7650: my $response=$ua->request($request);
7651: $$rtncode = $response->code;
7652: if (! $response->is_success()) {
7653: return 'failed';
7654: }
7655: if ($reqtype eq 'HEAD') {
7656: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
7657: } elsif ($reqtype eq 'GET') {
7658: $$info = $response->content;
7659: }
7660: return 'ok';
7661: }
7662:
7663: sub readfile {
7664: my $file = shift;
7665: if ( (! -e $file ) || ($file eq '') ) { return -1; };
7666: my $fh;
7667: open($fh,"<$file");
7668: my $a='';
7669: while (my $line = <$fh>) { $a .= $line; }
7670: return $a;
7671: }
7672:
7673: sub filelocation {
7674: my ($dir,$file) = @_;
7675: my $location;
7676: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
7677:
7678: if ($file =~ m-^/adm/-) {
7679: $file=~s-^/adm/wrapper/-/-;
7680: $file=~s-^/adm/coursedocs/showdoc/-/-;
7681: }
7682:
7683: if ($file=~m:^/~:) { # is a contruction space reference
7684: $location = $file;
7685: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
7686: } elsif ($file=~m{^/home/$match_username/public_html/}) {
7687: # is a correct contruction space reference
7688: $location = $file;
7689: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
7690: my ($udom,$uname,$filename)=
7691: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
7692: my $home=&homeserver($uname,$udom);
7693: my $is_me=0;
7694: my @ids=¤t_machine_ids();
7695: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
7696: if ($is_me) {
7697: $location=&propath($udom,$uname).
7698: '/userfiles/'.$filename;
7699: } else {
7700: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
7701: $udom.'/'.$uname.'/'.$filename;
7702: }
7703: } elsif ($file =~ m-^/adm/-) {
7704: $location = $perlvar{'lonDocRoot'}.'/'.$file;
7705: } else {
7706: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
7707: $file=~s:^/res/:/:;
7708: if ( !( $file =~ m:^/:) ) {
7709: $location = $dir. '/'.$file;
7710: } else {
7711: $location = '/home/httpd/html/res'.$file;
7712: }
7713: }
7714: $location=~s://+:/:g; # remove duplicate /
7715: while ($location=~m:/\.\./:) {$location=~ s:/[^/]+/\.\./:/:g;} #remove dir/..
7716: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
7717: return $location;
7718: }
7719:
7720: sub hreflocation {
7721: my ($dir,$file)=@_;
7722: unless (($file=~m-^http://-i) || ($file=~m-^/-)) {
7723: $file=filelocation($dir,$file);
7724: } elsif ($file=~m-^/adm/-) {
7725: $file=~s-^/adm/wrapper/-/-;
7726: $file=~s-^/adm/coursedocs/showdoc/-/-;
7727: }
7728: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
7729: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
7730: } elsif ($file=~m-/home/($match_username)/public_html/-) {
7731: $file=~s-^/home/($match_username)/public_html/-/~$1/-;
7732: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
7733: $file=~s-^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/
7734: -/uploaded/$1/$2/-x;
7735: }
7736: return $file;
7737: }
7738:
7739: sub current_machine_domains {
7740: return &machine_domains(&hostname($perlvar{'lonHostID'}));
7741: }
7742:
7743: sub machine_domains {
7744: my ($hostname) = @_;
7745: my @domains;
7746: my %hostname = &all_hostnames();
7747: while( my($id, $name) = each(%hostname)) {
7748: # &logthis("-$id-$name-$hostname-");
7749: if ($hostname eq $name) {
7750: push(@domains,&host_domain($id));
7751: }
7752: }
7753: return @domains;
7754: }
7755:
7756: sub current_machine_ids {
7757: return &machine_ids(&hostname($perlvar{'lonHostID'}));
7758: }
7759:
7760: sub machine_ids {
7761: my ($hostname) = @_;
7762: $hostname ||= &hostname($perlvar{'lonHostID'});
7763: my @ids;
7764: my %name_to_host = &all_names();
7765: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
7766: return @{ $name_to_host{$hostname} };
7767: }
7768: return;
7769: }
7770:
7771: sub additional_machine_domains {
7772: my @domains;
7773: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
7774: while( my $line = <$fh>) {
7775: $line =~ s/\s//g;
7776: push(@domains,$line);
7777: }
7778: return @domains;
7779: }
7780:
7781: sub default_login_domain {
7782: my $domain = $perlvar{'lonDefDomain'};
7783: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
7784: foreach my $posdom (¤t_machine_domains(),
7785: &additional_machine_domains()) {
7786: if (lc($posdom) eq lc($testdomain)) {
7787: $domain=$posdom;
7788: last;
7789: }
7790: }
7791: return $domain;
7792: }
7793:
7794: # ------------------------------------------------------------- Declutters URLs
7795:
7796: sub declutter {
7797: my $thisfn=shift;
7798: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
7799: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
7800: $thisfn=~s/^\///;
7801: $thisfn=~s|^adm/wrapper/||;
7802: $thisfn=~s|^adm/coursedocs/showdoc/||;
7803: $thisfn=~s/^res\///;
7804: $thisfn=~s/\?.+$//;
7805: return $thisfn;
7806: }
7807:
7808: # ------------------------------------------------------------- Clutter up URLs
7809:
7810: sub clutter {
7811: my $thisfn='/'.&declutter(shift);
7812: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
7813: || $thisfn =~ m{^/adm/(includes|pages)} ) {
7814: $thisfn='/res'.$thisfn;
7815: }
7816: if ($thisfn !~m|/adm|) {
7817: if ($thisfn =~ m|/ext/|) {
7818: $thisfn='/adm/wrapper'.$thisfn;
7819: } else {
7820: my ($ext) = ($thisfn =~ /\.(\w+)$/);
7821: my $embstyle=&Apache::loncommon::fileembstyle($ext);
7822: if ($embstyle eq 'ssi'
7823: || ($embstyle eq 'hdn')
7824: || ($embstyle eq 'rat')
7825: || ($embstyle eq 'prv')
7826: || ($embstyle eq 'ign')) {
7827: #do nothing with these
7828: } elsif (($embstyle eq 'img')
7829: || ($embstyle eq 'emb')
7830: || ($embstyle eq 'wrp')) {
7831: $thisfn='/adm/wrapper'.$thisfn;
7832: } elsif ($embstyle eq 'unk'
7833: && $thisfn!~/\.(sequence|page)$/) {
7834: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
7835: } else {
7836: # &logthis("Got a blank emb style");
7837: }
7838: }
7839: }
7840: return $thisfn;
7841: }
7842:
7843: sub clutter_with_no_wrapper {
7844: my $uri = &clutter(shift);
7845: if ($uri =~ m-^/adm/-) {
7846: $uri =~ s-^/adm/wrapper/-/-;
7847: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
7848: }
7849: return $uri;
7850: }
7851:
7852: sub freeze_escape {
7853: my ($value)=@_;
7854: if (ref($value)) {
7855: $value=&nfreeze($value);
7856: return '__FROZEN__'.&escape($value);
7857: }
7858: return &escape($value);
7859: }
7860:
7861:
7862: sub thaw_unescape {
7863: my ($value)=@_;
7864: if ($value =~ /^__FROZEN__/) {
7865: substr($value,0,10,undef);
7866: $value=&unescape($value);
7867: return &thaw($value);
7868: }
7869: return &unescape($value);
7870: }
7871:
7872: sub correct_line_ends {
7873: my ($result)=@_;
7874: $$result =~s/\r\n/\n/mg;
7875: $$result =~s/\r/\n/mg;
7876: }
7877: # ================================================================ Main Program
7878:
7879: sub goodbye {
7880: &logthis("Starting Shut down");
7881: #not converted to using infrastruture and probably shouldn't be
7882: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
7883: #converted
7884: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
7885: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
7886: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
7887: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
7888: #1.1 only
7889: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
7890: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
7891: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
7892: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
7893: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
7894: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
7895: &logthis(sprintf("%-20s is %s",'hits',$hits));
7896: &flushcourselogs();
7897: &logthis("Shutting down");
7898: }
7899:
7900: sub get_dns {
7901: my ($url,$func,$ignore_cache) = @_;
7902: if (!$ignore_cache) {
7903: my ($content,$cached)=
7904: &Apache::lonnet::is_cached_new('dns',$url);
7905: if ($cached) {
7906: &$func($content);
7907: return;
7908: }
7909: }
7910:
7911: my %alldns;
7912: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
7913: foreach my $dns (<$config>) {
7914: next if ($dns !~ /^\^(\S*)/x);
7915: $alldns{$1} = 1;
7916: }
7917: while (%alldns) {
7918: my ($dns) = keys(%alldns);
7919: delete($alldns{$dns});
7920: my $ua=new LWP::UserAgent;
7921: my $request=new HTTP::Request('GET',"http://$dns$url");
7922: my $response=$ua->request($request);
7923: next if ($response->is_error());
7924: my @content = split("\n",$response->content);
7925: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
7926: &$func(\@content);
7927: return;
7928: }
7929: close($config);
7930: my $which = (split('/',$url))[3];
7931: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
7932: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
7933: my @content = <$config>;
7934: &$func(\@content);
7935: return;
7936: }
7937: # ------------------------------------------------------------ Read domain file
7938: {
7939: my $loaded;
7940: my %domain;
7941:
7942: sub parse_domain_tab {
7943: my ($lines) = @_;
7944: foreach my $line (@$lines) {
7945: next if ($line =~ /^(\#|\s*$ )/x);
7946:
7947: chomp($line);
7948: my ($name,@elements) = split(/:/,$line,9);
7949: my %this_domain;
7950: foreach my $field ('description', 'auth_def', 'auth_arg_def',
7951: 'lang_def', 'city', 'longi', 'lati',
7952: 'primary') {
7953: $this_domain{$field} = shift(@elements);
7954: }
7955: $domain{$name} = \%this_domain;
7956: }
7957: }
7958:
7959: sub reset_domain_info {
7960: undef($loaded);
7961: undef(%domain);
7962: }
7963:
7964: sub load_domain_tab {
7965: my ($ignore_cache) = @_;
7966: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
7967: my $fh;
7968: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
7969: my @lines = <$fh>;
7970: &parse_domain_tab(\@lines);
7971: }
7972: close($fh);
7973: $loaded = 1;
7974: }
7975:
7976: sub domain {
7977: &load_domain_tab() if (!$loaded);
7978:
7979: my ($name,$what) = @_;
7980: return if ( !exists($domain{$name}) );
7981:
7982: if (!$what) {
7983: return $domain{$name}{'description'};
7984: }
7985: return $domain{$name}{$what};
7986: }
7987: }
7988:
7989:
7990: # ------------------------------------------------------------- Read hosts file
7991: {
7992: my %hostname;
7993: my %hostdom;
7994: my %libserv;
7995: my $loaded;
7996: my %name_to_host;
7997:
7998: sub parse_hosts_tab {
7999: my ($file) = @_;
8000: foreach my $configline (@$file) {
8001: next if ($configline =~ /^(\#|\s*$ )/x);
8002: next if ($configline =~ /^\^/);
8003: chomp($configline);
8004: my ($id,$domain,$role,$name)=split(/:/,$configline);
8005: $name=~s/\s//g;
8006: if ($id && $domain && $role && $name) {
8007: $hostname{$id}=$name;
8008: push(@{$name_to_host{$name}}, $id);
8009: $hostdom{$id}=$domain;
8010: if ($role eq 'library') { $libserv{$id}=$name; }
8011: }
8012: }
8013: }
8014:
8015: sub reset_hosts_info {
8016: &purge_remembered();
8017: &reset_domain_info();
8018: &reset_hosts_ip_info();
8019: undef(%name_to_host);
8020: undef(%hostname);
8021: undef(%hostdom);
8022: undef(%libserv);
8023: undef($loaded);
8024: }
8025:
8026: sub load_hosts_tab {
8027: my ($ignore_cache) = @_;
8028: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
8029: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
8030: my @config = <$config>;
8031: &parse_hosts_tab(\@config);
8032: close($config);
8033: $loaded=1;
8034: }
8035:
8036: sub hostname {
8037: &load_hosts_tab() if (!$loaded);
8038:
8039: my ($lonid) = @_;
8040: return $hostname{$lonid};
8041: }
8042:
8043: sub all_hostnames {
8044: &load_hosts_tab() if (!$loaded);
8045:
8046: return %hostname;
8047: }
8048:
8049: sub all_names {
8050: &load_hosts_tab() if (!$loaded);
8051:
8052: return %name_to_host;
8053: }
8054:
8055: sub is_library {
8056: &load_hosts_tab() if (!$loaded);
8057:
8058: return exists($libserv{$_[0]});
8059: }
8060:
8061: sub all_library {
8062: &load_hosts_tab() if (!$loaded);
8063:
8064: return %libserv;
8065: }
8066:
8067: sub get_servers {
8068: &load_hosts_tab() if (!$loaded);
8069:
8070: my ($domain,$type) = @_;
8071: my %possible_hosts = ($type eq 'library') ? %libserv
8072: : %hostname;
8073: my %result;
8074: if (ref($domain) eq 'ARRAY') {
8075: while ( my ($host,$hostname) = each(%possible_hosts)) {
8076: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
8077: $result{$host} = $hostname;
8078: }
8079: }
8080: } else {
8081: while ( my ($host,$hostname) = each(%possible_hosts)) {
8082: if ($hostdom{$host} eq $domain) {
8083: $result{$host} = $hostname;
8084: }
8085: }
8086: }
8087: return %result;
8088: }
8089:
8090: sub host_domain {
8091: &load_hosts_tab() if (!$loaded);
8092:
8093: my ($lonid) = @_;
8094: return $hostdom{$lonid};
8095: }
8096:
8097: sub all_domains {
8098: &load_hosts_tab() if (!$loaded);
8099:
8100: my %seen;
8101: my @uniq = grep(!$seen{$_}++, values(%hostdom));
8102: return @uniq;
8103: }
8104: }
8105:
8106: {
8107: my %iphost;
8108: my %name_to_ip;
8109: my %lonid_to_ip;
8110:
8111: sub get_hosts_from_ip {
8112: my ($ip) = @_;
8113: my %iphosts = &get_iphost();
8114: if (ref($iphosts{$ip})) {
8115: return @{$iphosts{$ip}};
8116: }
8117: return;
8118: }
8119:
8120: sub reset_hosts_ip_info {
8121: undef(%iphost);
8122: undef(%name_to_ip);
8123: undef(%lonid_to_ip);
8124: }
8125:
8126: sub get_host_ip {
8127: my ($lonid) = @_;
8128: if (exists($lonid_to_ip{$lonid})) {
8129: return $lonid_to_ip{$lonid};
8130: }
8131: my $name=&hostname($lonid);
8132: my $ip = gethostbyname($name);
8133: return if (!$ip || length($ip) ne 4);
8134: $ip=inet_ntoa($ip);
8135: $name_to_ip{$name} = $ip;
8136: $lonid_to_ip{$lonid} = $ip;
8137: return $ip;
8138: }
8139:
8140: sub get_iphost {
8141: my ($ignore_cache) = @_;
8142:
8143: if (!$ignore_cache) {
8144: if (%iphost) {
8145: return %iphost;
8146: }
8147: my ($ip_info,$cached)=
8148: &Apache::lonnet::is_cached_new('iphost','iphost');
8149: if ($cached) {
8150: %iphost = %{$ip_info->[0]};
8151: %name_to_ip = %{$ip_info->[1]};
8152: %lonid_to_ip = %{$ip_info->[2]};
8153: return %iphost;
8154: }
8155: }
8156:
8157: # get yesterday's info for fallback
8158: my %old_name_to_ip;
8159: my ($ip_info,$cached)=
8160: &Apache::lonnet::is_cached_new('iphost','iphost');
8161: if ($cached) {
8162: %old_name_to_ip = %{$ip_info->[1]};
8163: }
8164:
8165: my %name_to_host = &all_names();
8166: foreach my $name (keys(%name_to_host)) {
8167: my $ip;
8168: if (!exists($name_to_ip{$name})) {
8169: $ip = gethostbyname($name);
8170: if (!$ip || length($ip) ne 4) {
8171: if (defined($old_name_to_ip{$name})) {
8172: $ip = $old_name_to_ip{$name};
8173: &logthis("Can't find $name defaulting to old $ip");
8174: } else {
8175: &logthis("Name $name no IP found");
8176: next;
8177: }
8178: } else {
8179: $ip=inet_ntoa($ip);
8180: }
8181: $name_to_ip{$name} = $ip;
8182: } else {
8183: $ip = $name_to_ip{$name};
8184: }
8185: foreach my $id (@{ $name_to_host{$name} }) {
8186: $lonid_to_ip{$id} = $ip;
8187: }
8188: push(@{$iphost{$ip}},@{$name_to_host{$name}});
8189: }
8190: &Apache::lonnet::do_cache_new('iphost','iphost',
8191: [\%iphost,\%name_to_ip,\%lonid_to_ip],
8192: 48*60*60);
8193:
8194: return %iphost;
8195: }
8196: }
8197:
8198: BEGIN {
8199:
8200: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
8201: unless ($readit) {
8202: {
8203: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
8204: %perlvar = (%perlvar,%{$configvars});
8205: }
8206:
8207:
8208: # ------------------------------------------------------ Read spare server file
8209: {
8210: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
8211:
8212: while (my $configline=<$config>) {
8213: chomp($configline);
8214: if ($configline) {
8215: my ($host,$type) = split(':',$configline,2);
8216: if (!defined($type) || $type eq '') { $type = 'default' };
8217: push(@{ $spareid{$type} }, $host);
8218: }
8219: }
8220: close($config);
8221: }
8222: # ------------------------------------------------------------ Read permissions
8223: {
8224: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
8225:
8226: while (my $configline=<$config>) {
8227: chomp($configline);
8228: if ($configline) {
8229: my ($role,$perm)=split(/ /,$configline);
8230: if ($perm ne '') { $pr{$role}=$perm; }
8231: }
8232: }
8233: close($config);
8234: }
8235:
8236: # -------------------------------------------- Read plain texts for permissions
8237: {
8238: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
8239:
8240: while (my $configline=<$config>) {
8241: chomp($configline);
8242: if ($configline) {
8243: my ($short,@plain)=split(/:/,$configline);
8244: %{$prp{$short}} = ();
8245: if (@plain > 0) {
8246: $prp{$short}{'std'} = $plain[0];
8247: for (my $i=1; $i<@plain; $i++) {
8248: $prp{$short}{'alt'.$i} = $plain[$i];
8249: }
8250: }
8251: }
8252: }
8253: close($config);
8254: }
8255:
8256: # ---------------------------------------------------------- Read package table
8257: {
8258: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
8259:
8260: while (my $configline=<$config>) {
8261: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
8262: chomp($configline);
8263: my ($short,$plain)=split(/:/,$configline);
8264: my ($pack,$name)=split(/\&/,$short);
8265: if ($plain ne '') {
8266: $packagetab{$pack.'&'.$name.'&name'}=$name;
8267: $packagetab{$short}=$plain;
8268: }
8269: }
8270: close($config);
8271: }
8272:
8273: # ------------- set up temporary directory
8274: {
8275: $tmpdir = $perlvar{'lonDaemons'}.'/tmp/';
8276:
8277: }
8278:
8279: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
8280: 'compress_threshold'=> 20_000,
8281: });
8282:
8283: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
8284: $dumpcount=0;
8285:
8286: &logtouch();
8287: &logthis('<font color="yellow">INFO: Read configuration</font>');
8288: $readit=1;
8289: {
8290: use integer;
8291: my $test=(2**32)+1;
8292: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
8293: &logthis(" Detected 64bit platform ($_64bit)");
8294: }
8295: }
8296: }
8297:
8298: 1;
8299: __END__
8300:
8301: =pod
8302:
8303: =head1 NAME
8304:
8305: Apache::lonnet - Subroutines to ask questions about things in the network.
8306:
8307: =head1 SYNOPSIS
8308:
8309: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
8310:
8311: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
8312:
8313: Common parameters:
8314:
8315: =over 4
8316:
8317: =item *
8318:
8319: $uname : an internal username (if $cname expecting a course Id specifically)
8320:
8321: =item *
8322:
8323: $udom : a domain (if $cdom expecting a course's domain specifically)
8324:
8325: =item *
8326:
8327: $symb : a resource instance identifier
8328:
8329: =item *
8330:
8331: $namespace : the name of a .db file that contains the data needed or
8332: being set.
8333:
8334: =back
8335:
8336: =head1 OVERVIEW
8337:
8338: lonnet provides subroutines which interact with the
8339: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
8340: about classes, users, and resources.
8341:
8342: For many of these objects you can also use this to store data about
8343: them or modify them in various ways.
8344:
8345: =head2 Symbs
8346:
8347: To identify a specific instance of a resource, LON-CAPA uses symbols
8348: or "symbs"X<symb>. These identifiers are built from the URL of the
8349: map, the resource number of the resource in the map, and the URL of
8350: the resource itself. The latter is somewhat redundant, but might help
8351: if maps change.
8352:
8353: An example is
8354:
8355: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
8356:
8357: The respective map entry is
8358:
8359: <resource id="19" src="/res/msu/korte/tests/part12.problem"
8360: title="Problem 2">
8361: </resource>
8362:
8363: Symbs are used by the random number generator, as well as to store and
8364: restore data specific to a certain instance of for example a problem.
8365:
8366: =head2 Storing And Retrieving Data
8367:
8368: X<store()>X<cstore()>X<restore()>Three of the most important functions
8369: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
8370: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
8371: is is the non-critical message twin of cstore. These functions are for
8372: handlers to store a perl hash to a user's permanent data space in an
8373: easy manner, and to retrieve it again on another call. It is expected
8374: that a handler would use this once at the beginning to retrieve data,
8375: and then again once at the end to send only the new data back.
8376:
8377: The data is stored in the user's data directory on the user's
8378: homeserver under the ID of the course.
8379:
8380: The hash that is returned by restore will have all of the previous
8381: value for all of the elements of the hash.
8382:
8383: Example:
8384:
8385: #creating a hash
8386: my %hash;
8387: $hash{'foo'}='bar';
8388:
8389: #storing it
8390: &Apache::lonnet::cstore(\%hash);
8391:
8392: #changing a value
8393: $hash{'foo'}='notbar';
8394:
8395: #adding a new value
8396: $hash{'bar'}='foo';
8397: &Apache::lonnet::cstore(\%hash);
8398:
8399: #retrieving the hash
8400: my %history=&Apache::lonnet::restore();
8401:
8402: #print the hash
8403: foreach my $key (sort(keys(%history))) {
8404: print("\%history{$key} = $history{$key}");
8405: }
8406:
8407: Will print out:
8408:
8409: %history{1:foo} = bar
8410: %history{1:keys} = foo:timestamp
8411: %history{1:timestamp} = 990455579
8412: %history{2:bar} = foo
8413: %history{2:foo} = notbar
8414: %history{2:keys} = foo:bar:timestamp
8415: %history{2:timestamp} = 990455580
8416: %history{bar} = foo
8417: %history{foo} = notbar
8418: %history{timestamp} = 990455580
8419: %history{version} = 2
8420:
8421: Note that the special hash entries C<keys>, C<version> and
8422: C<timestamp> were added to the hash. C<version> will be equal to the
8423: total number of versions of the data that have been stored. The
8424: C<timestamp> attribute will be the UNIX time the hash was
8425: stored. C<keys> is available in every historical section to list which
8426: keys were added or changed at a specific historical revision of a
8427: hash.
8428:
8429: B<Warning>: do not store the hash that restore returns directly. This
8430: will cause a mess since it will restore the historical keys as if the
8431: were new keys. I.E. 1:foo will become 1:1:foo etc.
8432:
8433: Calling convention:
8434:
8435: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
8436: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
8437:
8438: For more detailed information, see lonnet specific documentation.
8439:
8440: =head1 RETURN MESSAGES
8441:
8442: =over 4
8443:
8444: =item * B<con_lost>: unable to contact remote host
8445:
8446: =item * B<con_delayed>: unable to contact remote host, message will be delivered
8447: when the connection is brought back up
8448:
8449: =item * B<con_failed>: unable to contact remote host and unable to save message
8450: for later delivery
8451:
8452: =item * B<error:>: an error a occured, a description of the error follows the :
8453:
8454: =item * B<no_such_host>: unable to fund a host associated with the user/domain
8455: that was requested
8456:
8457: =back
8458:
8459: =head1 PUBLIC SUBROUTINES
8460:
8461: =head2 Session Environment Functions
8462:
8463: =over 4
8464:
8465: =item *
8466: X<appenv()>
8467: B<appenv(%hash)>: the value of %hash is written to
8468: the user envirnoment file, and will be restored for each access this
8469: user makes during this session, also modifies the %env for the current
8470: process
8471:
8472: =item *
8473: X<delenv()>
8474: B<delenv($regexp)>: removes all items from the session
8475: environment file that matches the regular expression in $regexp. The
8476: values are also delted from the current processes %env.
8477:
8478: =item * get_env_multiple($name)
8479:
8480: gets $name from the %env hash, it seemlessly handles the cases where multiple
8481: values may be defined and end up as an array ref.
8482:
8483: returns an array of values
8484:
8485: =back
8486:
8487: =head2 User Information
8488:
8489: =over 4
8490:
8491: =item *
8492: X<queryauthenticate()>
8493: B<queryauthenticate($uname,$udom)>: try to determine user's current
8494: authentication scheme
8495:
8496: =item *
8497: X<authenticate()>
8498: B<authenticate($uname,$upass,$udom)>: try to
8499: authenticate user from domain's lib servers (first use the current
8500: one). C<$upass> should be the users password.
8501:
8502: =item *
8503: X<homeserver()>
8504: B<homeserver($uname,$udom)>: find the server which has
8505: the user's directory and files (there must be only one), this caches
8506: the answer, and also caches if there is a borken connection.
8507:
8508: =item *
8509: X<idget()>
8510: B<idget($udom,@ids)>: find the usernames behind a list of IDs
8511: (IDs are a unique resource in a domain, there must be only 1 ID per
8512: username, and only 1 username per ID in a specific domain) (returns
8513: hash: id=>name,id=>name)
8514:
8515: =item *
8516: X<idrget()>
8517: B<idrget($udom,@unames)>: find the IDs behind a list of
8518: usernames (returns hash: name=>id,name=>id)
8519:
8520: =item *
8521: X<idput()>
8522: B<idput($udom,%ids)>: store away a list of names and associated IDs
8523:
8524: =item *
8525: X<rolesinit()>
8526: B<rolesinit($udom,$username,$authhost)>: get user privileges
8527:
8528: =item *
8529: X<getsection()>
8530: B<getsection($udom,$uname,$cname)>: finds the section of student in the
8531: course $cname, return section name/number or '' for "not in course"
8532: and '-1' for "no section"
8533:
8534: =item *
8535: X<userenvironment()>
8536: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
8537: passed in @what from the requested user's environment, returns a hash
8538:
8539: =item *
8540: X<userlog_query()>
8541: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
8542: activity.log file. %filters defines filters applied when parsing the
8543: log file. These can be start or end timestamps, or the type of action
8544: - log to look for Login or Logout events, check for Checkin or
8545: Checkout, role for role selection. The response is in the form
8546: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
8547: escaped strings of the action recorded in the activity.log file.
8548:
8549: =back
8550:
8551: =head2 User Roles
8552:
8553: =over 4
8554:
8555: =item *
8556:
8557: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
8558: F: full access
8559: U,I,K: authentication modes (cxx only)
8560: '': forbidden
8561: 1: user needs to choose course
8562: 2: browse allowed
8563: A: passphrase authentication needed
8564:
8565: =item *
8566:
8567: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
8568: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
8569: and course level
8570:
8571: =item *
8572:
8573: plaintext($short) : return value in %prp hash (rolesplain.tab); plain text
8574: explanation of a user role term
8575:
8576: =item *
8577:
8578: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms) :
8579: All arguments are optional. Returns a hash of a roles, either for
8580: co-author/assistant author roles for a user's Construction Space
8581: (default), or if $context is 'userroles', roles for the user himself,
8582: In the hash, keys are set to colon-sparated $uname,$udom,and $role,
8583: and value is set to colon-separated start and end times for the role.
8584: If no username and domain are specified, will default to current
8585: user/domain. Types, roles, and roledoms are references to arrays,
8586: of role statuses (active, future or previous), roles
8587: (e.g., cc,in, st etc.) and domains of the roles which can be used
8588: to restrict the list of roles reported. If no array ref is
8589: provided for types, will default to return only active roles.
8590:
8591: =back
8592:
8593: =head2 User Modification
8594:
8595: =over 4
8596:
8597: =item *
8598:
8599: assignrole($udom,$uname,$url,$role,$end,$start) : assign role; give a role to a
8600: user for the level given by URL. Optional start and end dates (leave empty
8601: string or zero for "no date")
8602:
8603: =item *
8604:
8605: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
8606: change a users, password, possible return values are: ok,
8607: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
8608: refused
8609:
8610: =item *
8611:
8612: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
8613:
8614: =item *
8615:
8616: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene) :
8617: modify user
8618:
8619: =item *
8620:
8621: modifystudent
8622:
8623: modify a students enrollment and identification information.
8624: The course id is resolved based on the current users environment.
8625: This means the envoking user must be a course coordinator or otherwise
8626: associated with a course.
8627:
8628: This call is essentially a wrapper for lonnet::modifyuser and
8629: lonnet::modify_student_enrollment
8630:
8631: Inputs:
8632:
8633: =over 4
8634:
8635: =item B<$udom> Students loncapa domain
8636:
8637: =item B<$uname> Students loncapa login name
8638:
8639: =item B<$uid> Students id/student number
8640:
8641: =item B<$umode> Students authentication mode
8642:
8643: =item B<$upass> Students password
8644:
8645: =item B<$first> Students first name
8646:
8647: =item B<$middle> Students middle name
8648:
8649: =item B<$last> Students last name
8650:
8651: =item B<$gene> Students generation
8652:
8653: =item B<$usec> Students section in course
8654:
8655: =item B<$end> Unix time of the roles expiration
8656:
8657: =item B<$start> Unix time of the roles start date
8658:
8659: =item B<$forceid> If defined, allow $uid to be changed
8660:
8661: =item B<$desiredhome> server to use as home server for student
8662:
8663: =back
8664:
8665: =item *
8666:
8667: modify_student_enrollment
8668:
8669: Change a students enrollment status in a class. The environment variable
8670: 'role.request.course' must be defined for this function to proceed.
8671:
8672: Inputs:
8673:
8674: =over 4
8675:
8676: =item $udom, students domain
8677:
8678: =item $uname, students name
8679:
8680: =item $uid, students user id
8681:
8682: =item $first, students first name
8683:
8684: =item $middle
8685:
8686: =item $last
8687:
8688: =item $gene
8689:
8690: =item $usec
8691:
8692: =item $end
8693:
8694: =item $start
8695:
8696: =back
8697:
8698:
8699: =item *
8700:
8701: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
8702: custom role; give a custom role to a user for the level given by URL. Specify
8703: name and domain of role author, and role name
8704:
8705: =item *
8706:
8707: revokerole($udom,$uname,$url,$role) : revoke a role for url
8708:
8709: =item *
8710:
8711: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
8712:
8713: =back
8714:
8715: =head2 Course Infomation
8716:
8717: =over 4
8718:
8719: =item *
8720:
8721: coursedescription($courseid) : returns a hash of information about the
8722: specified course id, including all environment settings for the
8723: course, the description of the course will be in the hash under the
8724: key 'description'
8725:
8726: =item *
8727:
8728: resdata($name,$domain,$type,@which) : request for current parameter
8729: setting for a specific $type, where $type is either 'course' or 'user',
8730: @what should be a list of parameters to ask about. This routine caches
8731: answers for 5 minutes.
8732:
8733: =item *
8734:
8735: get_courseresdata($courseid, $domain) : dump the entire course resource
8736: data base, returning a hash that is keyed by the resource name and has
8737: values that are the resource value. I believe that the timestamps and
8738: versions are also returned.
8739:
8740:
8741: =back
8742:
8743: =head2 Course Modification
8744:
8745: =over 4
8746:
8747: =item *
8748:
8749: writecoursepref($courseid,%prefs) : write preferences (environment
8750: database) for a course
8751:
8752: =item *
8753:
8754: createcourse($udom,$description,$url) : make/modify course
8755:
8756: =back
8757:
8758: =head2 Resource Subroutines
8759:
8760: =over 4
8761:
8762: =item *
8763:
8764: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
8765:
8766: =item *
8767:
8768: repcopy($filename) : subscribes to the requested file, and attempts to
8769: replicate from the owning library server, Might return
8770: 'unavailable', 'not_found', 'forbidden', 'ok', or
8771: 'bad_request', also attempts to grab the metadata for the
8772: resource. Expects the local filesystem pathname
8773: (/home/httpd/html/res/....)
8774:
8775: =back
8776:
8777: =head2 Resource Information
8778:
8779: =over 4
8780:
8781: =item *
8782:
8783: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
8784: a vairety of different possible values, $varname should be a request
8785: string, and the other parameters can be used to specify who and what
8786: one is asking about.
8787:
8788: Possible values for $varname are environment.lastname (or other item
8789: from the envirnment hash), user.name (or someother aspect about the
8790: user), resource.0.maxtries (or some other part and parameter of a
8791: resource)
8792:
8793: =item *
8794:
8795: directcondval($number) : get current value of a condition; reads from a state
8796: string
8797:
8798: =item *
8799:
8800: condval($condidx) : value of condition index based on state
8801:
8802: =item *
8803:
8804: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
8805: resource's metadata, $what should be either a specific key, or either
8806: 'keys' (to get a list of possible keys) or 'packages' to get a list of
8807: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
8808:
8809: this function automatically caches all requests
8810:
8811: =item *
8812:
8813: metadata_query($query,$custom,$customshow) : make a metadata query against the
8814: network of library servers; returns file handle of where SQL and regex results
8815: will be stored for query
8816:
8817: =item *
8818:
8819: symbread($filename) : return symbolic list entry (filename argument optional);
8820: returns the data handle
8821:
8822: =item *
8823:
8824: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
8825: a possible symb for the URL in $thisfn, and if is an encryypted
8826: resource that the user accessed using /enc/ returns a 1 on success, 0
8827: on failure, user must be in a course, as it assumes the existance of
8828: the course initial hash, and uses $env('request.course.id'}
8829:
8830:
8831: =item *
8832:
8833: symbclean($symb) : removes versions numbers from a symb, returns the
8834: cleaned symb
8835:
8836: =item *
8837:
8838: is_on_map($uri) : checks if the $uri is somewhere on the current
8839: course map, user must be in a course for it to work.
8840:
8841: =item *
8842:
8843: numval($salt) : return random seed value (addend for rndseed)
8844:
8845: =item *
8846:
8847: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
8848: a random seed, all arguments are optional, if they aren't sent it uses the
8849: environment to derive them. Note: if symb isn't sent and it can't get one
8850: from &symbread it will use the current time as its return value
8851:
8852: =item *
8853:
8854: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
8855: unfakeable, receipt
8856:
8857: =item *
8858:
8859: receipt() : API to ireceipt working off of env values; given out to users
8860:
8861: =item *
8862:
8863: countacc($url) : count the number of accesses to a given URL
8864:
8865: =item *
8866:
8867: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
8868:
8869: =item *
8870:
8871: checkin($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 $tcrsid)
8872:
8873: =item *
8874:
8875: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
8876:
8877: =item *
8878:
8879: devalidate($symb) : devalidate temporary spreadsheet calculations,
8880: forcing spreadsheet to reevaluate the resource scores next time.
8881:
8882: =back
8883:
8884: =head2 Storing/Retreiving Data
8885:
8886: =over 4
8887:
8888: =item *
8889:
8890: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
8891: for this url; hashref needs to be given and should be a \%hashname; the
8892: remaining args aren't required and if they aren't passed or are '' they will
8893: be derived from the env
8894:
8895: =item *
8896:
8897: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
8898: uses critical subroutine
8899:
8900: =item *
8901:
8902: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
8903: all args are optional
8904:
8905: =item *
8906:
8907: dumpstore($namespace,$udom,$uname,$regexp,$range) :
8908: dumps the complete (or key matching regexp) namespace into a hash
8909: ($udom, $uname, $regexp, $range are optional) for a namespace that is
8910: normally &store()ed into
8911:
8912: $range should be either an integer '100' (give me the first 100
8913: matching records)
8914: or be two integers sperated by a - with no spaces
8915: '30-50' (give me the 30th through the 50th matching
8916: records)
8917:
8918:
8919: =item *
8920:
8921: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
8922: replaces a &store() version of data with a replacement set of data
8923: for a particular resource in a namespace passed in the $storehash hash
8924: reference
8925:
8926: =item *
8927:
8928: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
8929: works very similar to store/cstore, but all data is stored in a
8930: temporary location and can be reset using tmpreset, $storehash should
8931: be a hash reference, returns nothing on success
8932:
8933: =item *
8934:
8935: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
8936: similar to restore, but all data is stored in a temporary location and
8937: can be reset using tmpreset. Returns a hash of values on success,
8938: error string otherwise.
8939:
8940: =item *
8941:
8942: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
8943: deltes all keys for $symb form the temporary storage hash.
8944:
8945: =item *
8946:
8947: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
8948: reference filled in from namesp ($udom and $uname are optional)
8949:
8950: =item *
8951:
8952: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
8953: namesp ($udom and $uname are optional)
8954:
8955: =item *
8956:
8957: dump($namespace,$udom,$uname,$regexp,$range) :
8958: dumps the complete (or key matching regexp) namespace into a hash
8959: ($udom, $uname, $regexp, $range are optional)
8960:
8961: $range should be either an integer '100' (give me the first 100
8962: matching records)
8963: or be two integers sperated by a - with no spaces
8964: '30-50' (give me the 30th through the 50th matching
8965: records)
8966: =item *
8967:
8968: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
8969: $store can be a scalar, an array reference, or if the amount to be
8970: incremented is > 1, a hash reference.
8971:
8972: ($udom and $uname are optional)
8973:
8974: =item *
8975:
8976: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
8977: ($udom and $uname are optional)
8978:
8979: =item *
8980:
8981: cput($namespace,$storehash,$udom,$uname) : critical put
8982: ($udom and $uname are optional)
8983:
8984: =item *
8985:
8986: newput($namespace,$storehash,$udom,$uname) :
8987:
8988: Attempts to store the items in the $storehash, but only if they don't
8989: currently exist, if this succeeds you can be certain that you have
8990: successfully created a new key value pair in the $namespace db.
8991:
8992:
8993: Args:
8994: $namespace: name of database to store values to
8995: $storehash: hashref to store to the db
8996: $udom: (optional) domain of user containing the db
8997: $uname: (optional) name of user caontaining the db
8998:
8999: Returns:
9000: 'ok' -> succeeded in storing all keys of $storehash
9001: 'key_exists: <key>' -> failed to anything out of $storehash, as at
9002: least <key> already existed in the db (other
9003: requested keys may also already exist)
9004: 'error: <msg>' -> unable to tie the DB or other erorr occured
9005: 'con_lost' -> unable to contact request server
9006: 'refused' -> action was not allowed by remote machine
9007:
9008:
9009: =item *
9010:
9011: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
9012: reference filled in from namesp (encrypts the return communication)
9013: ($udom and $uname are optional)
9014:
9015: =item *
9016:
9017: log($udom,$name,$home,$message) : write to permanent log for user; use
9018: critical subroutine
9019:
9020: =item *
9021:
9022: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
9023: array reference filled in from namespace found in domain level on either
9024: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
9025:
9026: =item *
9027:
9028: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
9029: domain level either on specified domain server ($uhome) or primary domain
9030: server ($udom and $uhome are optional)
9031:
9032: =back
9033:
9034: =head2 Network Status Functions
9035:
9036: =over 4
9037:
9038: =item *
9039:
9040: dirlist($uri) : return directory list based on URI
9041:
9042: =item *
9043:
9044: spareserver() : find server with least workload from spare.tab
9045:
9046: =back
9047:
9048: =head2 Apache Request
9049:
9050: =over 4
9051:
9052: =item *
9053:
9054: ssi($url,%hash) : server side include, does a complete request cycle on url to
9055: localhost, posts hash
9056:
9057: =back
9058:
9059: =head2 Data to String to Data
9060:
9061: =over 4
9062:
9063: =item *
9064:
9065: hash2str(%hash) : convert a hash into a string complete with escaping and '='
9066: and '&' separators, supports elements that are arrayrefs and hashrefs
9067:
9068: =item *
9069:
9070: hashref2str($hashref) : convert a hashref into a string complete with
9071: escaping and '=' and '&' separators, supports elements that are
9072: arrayrefs and hashrefs
9073:
9074: =item *
9075:
9076: arrayref2str($arrayref) : convert an arrayref into a string complete
9077: with escaping and '&' separators, supports elements that are arrayrefs
9078: and hashrefs
9079:
9080: =item *
9081:
9082: str2hash($string) : convert string to hash using unescaping and
9083: splitting on '=' and '&', supports elements that are arrayrefs and
9084: hashrefs
9085:
9086: =item *
9087:
9088: str2array($string) : convert string to hash using unescaping and
9089: splitting on '&', supports elements that are arrayrefs and hashrefs
9090:
9091: =back
9092:
9093: =head2 Logging Routines
9094:
9095: =over 4
9096:
9097: These routines allow one to make log messages in the lonnet.log and
9098: lonnet.perm logfiles.
9099:
9100: =item *
9101:
9102: logtouch() : make sure the logfile, lonnet.log, exists
9103:
9104: =item *
9105:
9106: logthis() : append message to the normal lonnet.log file, it gets
9107: preiodically rolled over and deleted.
9108:
9109: =item *
9110:
9111: logperm() : append a permanent message to lonnet.perm.log, this log
9112: file never gets deleted by any automated portion of the system, only
9113: messages of critical importance should go in here.
9114:
9115: =back
9116:
9117: =head2 General File Helper Routines
9118:
9119: =over 4
9120:
9121: =item *
9122:
9123: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
9124: (a) files in /uploaded
9125: (i) If a local copy of the file exists -
9126: compares modification date of local copy with last-modified date for
9127: definitive version stored on home server for course. If local copy is
9128: stale, requests a new version from the home server and stores it.
9129: If the original has been removed from the home server, then local copy
9130: is unlinked.
9131: (ii) If local copy does not exist -
9132: requests the file from the home server and stores it.
9133:
9134: If $caller is 'uploadrep':
9135: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
9136: for request for files originally uploaded via DOCS.
9137: - returns 'ok' if fresh local copy now available, -1 otherwise.
9138:
9139: Otherwise:
9140: This indicates a call from the content generation phase of the request.
9141: - returns the entire contents of the file or -1.
9142:
9143: (b) files in /res
9144: - returns the entire contents of a file or -1;
9145: it properly subscribes to and replicates the file if neccessary.
9146:
9147:
9148: =item *
9149:
9150: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
9151: reference
9152:
9153: returns either a stat() list of data about the file or an empty list
9154: if the file doesn't exist or couldn't find out about it (connection
9155: problems or user unknown)
9156:
9157: =item *
9158:
9159: filelocation($dir,$file) : returns file system location of a file
9160: based on URI; meant to be "fairly clean" absolute reference, $dir is a
9161: directory that relative $file lookups are to looked in ($dir of /a/dir
9162: and a file of ../bob will become /a/bob)
9163:
9164: =item *
9165:
9166: hreflocation($dir,$file) : returns file system location or a URL; same as
9167: filelocation except for hrefs
9168:
9169: =item *
9170:
9171: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
9172:
9173: =back
9174:
9175: =head2 Usererfile file routines (/uploaded*)
9176:
9177: =over 4
9178:
9179: =item *
9180:
9181: userfileupload(): main rotine for putting a file in a user or course's
9182: filespace, arguments are,
9183:
9184: formname - required - this is the name of the element in $env where the
9185: filename, and the contents of the file to create/modifed exist
9186: the filename is in $env{'form.'.$formname.'.filename'} and the
9187: contents of the file is located in $env{'form.'.$formname}
9188: coursedoc - if true, store the file in the course of the active role
9189: of the current user
9190: subdir - required - subdirectory to put the file in under ../userfiles/
9191: if undefined, it will be placed in "unknown"
9192:
9193: (This routine calls clean_filename() to remove any dangerous
9194: characters from the filename, and then calls finuserfileupload() to
9195: complete the transaction)
9196:
9197: returns either the url of the uploaded file (/uploaded/....) if successful
9198: and /adm/notfound.html if unsuccessful
9199:
9200: =item *
9201:
9202: clean_filename(): routine for cleaing a filename up for storage in
9203: userfile space, argument is:
9204:
9205: filename - proposed filename
9206:
9207: returns: the new clean filename
9208:
9209: =item *
9210:
9211: finishuserfileupload(): routine that creaes and sends the file to
9212: userspace, probably shouldn't be called directly
9213:
9214: docuname: username or courseid of destination for the file
9215: docudom: domain of user/course of destination for the file
9216: formname: same as for userfileupload()
9217: fname: filename (inculding subdirectories) for the file
9218:
9219: returns either the url of the uploaded file (/uploaded/....) if successful
9220: and /adm/notfound.html if unsuccessful
9221:
9222: =item *
9223:
9224: renameuserfile(): renames an existing userfile to a new name
9225:
9226: Args:
9227: docuname: username or courseid of destination for the file
9228: docudom: domain of user/course of destination for the file
9229: old: current file name (including any subdirs under userfiles)
9230: new: desired file name (including any subdirs under userfiles)
9231:
9232: =item *
9233:
9234: mkdiruserfile(): creates a directory is a userfiles dir
9235:
9236: Args:
9237: docuname: username or courseid of destination for the file
9238: docudom: domain of user/course of destination for the file
9239: dir: dir to create (including any subdirs under userfiles)
9240:
9241: =item *
9242:
9243: removeuserfile(): removes a file that exists in userfiles
9244:
9245: Args:
9246: docuname: username or courseid of destination for the file
9247: docudom: domain of user/course of destination for the file
9248: fname: filname to delete (including any subdirs under userfiles)
9249:
9250: =item *
9251:
9252: removeuploadedurl(): convience function for removeuserfile()
9253:
9254: Args:
9255: url: a full /uploaded/... url to delete
9256:
9257: =item *
9258:
9259: get_portfile_permissions():
9260: Args:
9261: domain: domain of user or course contain the portfolio files
9262: user: name of user or num of course contain the portfolio files
9263: Returns:
9264: hashref of a dump of the proper file_permissions.db
9265:
9266:
9267: =item *
9268:
9269: get_access_controls():
9270:
9271: Args:
9272: current_permissions: the hash ref returned from get_portfile_permissions()
9273: group: (optional) the group you want the files associated with
9274: file: (optional) the file you want access info on
9275:
9276: Returns:
9277: a hash (keys are file names) of hashes containing
9278: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
9279: values are XML containing access control settings (see below)
9280:
9281: Internal notes:
9282:
9283: access controls are stored in file_permissions.db as key=value pairs.
9284: key -> path to file/file_name\0uniqueID:scope_end_start
9285: where scope -> public,guest,course,group,domains or users.
9286: end -> UNIX time for end of access (0 -> no end date)
9287: start -> UNIX time for start of access
9288:
9289: value -> XML description of access control
9290: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
9291: <start></start>
9292: <end></end>
9293:
9294: <password></password> for scope type = guest
9295:
9296: <domain></domain> for scope type = course or group
9297: <number></number>
9298: <roles id="">
9299: <role></role>
9300: <access></access>
9301: <section></section>
9302: <group></group>
9303: </roles>
9304:
9305: <dom></dom> for scope type = domains
9306:
9307: <users> for scope type = users
9308: <user>
9309: <uname></uname>
9310: <udom></udom>
9311: </user>
9312: </users>
9313: </scope>
9314:
9315: Access data is also aggregated for each file in an additional key=value pair:
9316: key -> path to file/file_name\0accesscontrol
9317: value -> reference to hash
9318: hash contains key = value pairs
9319: where key = uniqueID:scope_end_start
9320: value = UNIX time record was last updated
9321:
9322: Used to improve speed of look-ups of access controls for each file.
9323:
9324: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
9325:
9326: modify_access_controls():
9327:
9328: Modifies access controls for a portfolio file
9329: Args
9330: 1. file name
9331: 2. reference to hash of required changes,
9332: 3. domain
9333: 4. username
9334: where domain,username are the domain of the portfolio owner
9335: (either a user or a course)
9336:
9337: Returns:
9338: 1. result of additions or updates ('ok' or 'error', with error message).
9339: 2. result of deletions ('ok' or 'error', with error message).
9340: 3. reference to hash of any new or updated access controls.
9341: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
9342: key = integer (inbound ID)
9343: value = uniqueID
9344:
9345: =back
9346:
9347: =head2 HTTP Helper Routines
9348:
9349: =over 4
9350:
9351: =item *
9352:
9353: escape() : unpack non-word characters into CGI-compatible hex codes
9354:
9355: =item *
9356:
9357: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
9358:
9359: =back
9360:
9361: =head1 PRIVATE SUBROUTINES
9362:
9363: =head2 Underlying communication routines (Shouldn't call)
9364:
9365: =over 4
9366:
9367: =item *
9368:
9369: subreply() : tries to pass a message to lonc, returns con_lost if incapable
9370:
9371: =item *
9372:
9373: reply() : uses subreply to send a message to remote machine, logs all failures
9374:
9375: =item *
9376:
9377: critical() : passes a critical message to another server; if cannot
9378: get through then place message in connection buffer directory and
9379: returns con_delayed, if incapable of saving message, returns
9380: con_failed
9381:
9382: =item *
9383:
9384: reconlonc() : tries to reconnect lonc client processes.
9385:
9386: =back
9387:
9388: =head2 Resource Access Logging
9389:
9390: =over 4
9391:
9392: =item *
9393:
9394: flushcourselogs() : flush (save) buffer logs and access logs
9395:
9396: =item *
9397:
9398: courselog($what) : save message for course in hash
9399:
9400: =item *
9401:
9402: courseacclog($what) : save message for course using &courselog(). Perform
9403: special processing for specific resource types (problems, exams, quizzes, etc).
9404:
9405: =item *
9406:
9407: goodbye() : flush course logs and log shutting down; it is called in srm.conf
9408: as a PerlChildExitHandler
9409:
9410: =back
9411:
9412: =head2 Other
9413:
9414: =over 4
9415:
9416: =item *
9417:
9418: symblist($mapname,%newhash) : update symbolic storage links
9419:
9420: =back
9421:
9422: =cut
9423:
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