File:
[LON-CAPA] /
loncom /
lonnet /
perl /
lonnet.pm
Revision
1.963:
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Thu Jul 17 21:22:51 2008 UTC (16 years ago) by
raeburn
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MAIN
CVS tags:
version_2_6_99_1,
HEAD
- &modifyuser() takes additional arg - $inststatus -- this is a : separated string of escaped institutional status types assigned to the user.
- Message logged by modifyuser() incorporates email and inststatus.
- Message logged by modifyuser() displays who performed the modification, unless this
was a self-creation event, in which case self-creation is recorded.
- Now CCs can modify permenent e-mail, no longer automatically set notification -mail
and critical notification e-mail to the same, to avoid overwriting user preference.
- Update documentation for modifyuser().
1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.963 2008/07/17 21:22:51 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, $dumpcount, %coursedombuf,
41: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
42: %courseownerbuf, %coursetypebuf,$locknum);
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,$cnum,$cdom)=@_;
92: if (($cnum eq '') || ($cdom eq '')) {
93: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
94: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
95: }
96: $logid++;
97: my $now = time();
98: my $id=$now.'00000'.$$.'00000'.$logid;
99: return &Apache::lonnet::put('nohist_'.$hash_name,
100: { $id => {
101: 'exe_uname' => $env{'user.name'},
102: 'exe_udom' => $env{'user.domain'},
103: 'exe_time' => $now,
104: 'exe_ip' => $ENV{'REMOTE_ADDR'},
105: 'delflag' => $delflag,
106: 'logentry' => $storehash,
107: 'uname' => $uname,
108: 'udom' => $udom,
109: }
110: },$cdom,$cnum);
111: }
112: }
113:
114: sub logtouch {
115: my $execdir=$perlvar{'lonDaemons'};
116: unless (-e "$execdir/logs/lonnet.log") {
117: open(my $fh,">>$execdir/logs/lonnet.log");
118: close $fh;
119: }
120: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
121: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
122: }
123:
124: sub logthis {
125: my $message=shift;
126: my $execdir=$perlvar{'lonDaemons'};
127: my $now=time;
128: my $local=localtime($now);
129: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
130: print $fh "$local ($$): $message\n";
131: close($fh);
132: }
133: return 1;
134: }
135:
136: sub logperm {
137: my $message=shift;
138: my $execdir=$perlvar{'lonDaemons'};
139: my $now=time;
140: my $local=localtime($now);
141: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
142: print $fh "$now:$message:$local\n";
143: close($fh);
144: }
145: return 1;
146: }
147:
148: sub create_connection {
149: my ($hostname,$lonid) = @_;
150: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
151: Type => SOCK_STREAM,
152: Timeout => 10);
153: return 0 if (!$client);
154: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
155: my $result = <$client>;
156: chomp($result);
157: return 1 if ($result eq 'done');
158: return 0;
159: }
160:
161:
162: # -------------------------------------------------- Non-critical communication
163: sub subreply {
164: my ($cmd,$server)=@_;
165: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
166: #
167: # With loncnew process trimming, there's a timing hole between lonc server
168: # process exit and the master server picking up the listen on the AF_UNIX
169: # socket. In that time interval, a lock file will exist:
170:
171: my $lockfile=$peerfile.".lock";
172: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
173: sleep(1);
174: }
175: # At this point, either a loncnew parent is listening or an old lonc
176: # or loncnew child is listening so we can connect or everything's dead.
177: #
178: # We'll give the connection a few tries before abandoning it. If
179: # connection is not possible, we'll con_lost back to the client.
180: #
181: my $client;
182: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
183: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
184: Type => SOCK_STREAM,
185: Timeout => 10);
186: if ($client) {
187: last; # Connected!
188: } else {
189: &create_connection(&hostname($server),$server);
190: }
191: sleep(1); # Try again later if failed connection.
192: }
193: my $answer;
194: if ($client) {
195: print $client "sethost:$server:$cmd\n";
196: $answer=<$client>;
197: if (!$answer) { $answer="con_lost"; }
198: chomp($answer);
199: } else {
200: $answer = 'con_lost'; # Failed connection.
201: }
202: return $answer;
203: }
204:
205: sub reply {
206: my ($cmd,$server)=@_;
207: unless (defined(&hostname($server))) { return 'no_such_host'; }
208: my $answer=subreply($cmd,$server);
209: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
210: &logthis("<font color=\"blue\">WARNING:".
211: " $cmd to $server returned $answer</font>");
212: }
213: return $answer;
214: }
215:
216: # ----------------------------------------------------------- Send USR1 to lonc
217:
218: sub reconlonc {
219: my ($lonid) = @_;
220: my $hostname = &hostname($lonid);
221: if ($lonid) {
222: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
223: if ($hostname && -e $peerfile) {
224: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
225: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
226: Type => SOCK_STREAM,
227: Timeout => 10);
228: if ($client) {
229: print $client ("reset_retries\n");
230: my $answer=<$client>;
231: #reset just this one.
232: }
233: }
234: return;
235: }
236:
237: &logthis("Trying to reconnect lonc");
238: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
239: if (open(my $fh,"<$loncfile")) {
240: my $loncpid=<$fh>;
241: chomp($loncpid);
242: if (kill 0 => $loncpid) {
243: &logthis("lonc at pid $loncpid responding, sending USR1");
244: kill USR1 => $loncpid;
245: sleep 1;
246: } else {
247: &logthis(
248: "<font color=\"blue\">WARNING:".
249: " lonc at pid $loncpid not responding, giving up</font>");
250: }
251: } else {
252: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
253: }
254: }
255:
256: # ------------------------------------------------------ Critical communication
257:
258: sub critical {
259: my ($cmd,$server)=@_;
260: unless (&hostname($server)) {
261: &logthis("<font color=\"blue\">WARNING:".
262: " Critical message to unknown server ($server)</font>");
263: return 'no_such_host';
264: }
265: my $answer=reply($cmd,$server);
266: if ($answer eq 'con_lost') {
267: &reconlonc("$perlvar{'lonSockDir'}/$server");
268: my $answer=reply($cmd,$server);
269: if ($answer eq 'con_lost') {
270: my $now=time;
271: my $middlename=$cmd;
272: $middlename=substr($middlename,0,16);
273: $middlename=~s/\W//g;
274: my $dfilename=
275: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
276: $dumpcount++;
277: {
278: my $dfh;
279: if (open($dfh,">$dfilename")) {
280: print $dfh "$cmd\n";
281: close($dfh);
282: }
283: }
284: sleep 2;
285: my $wcmd='';
286: {
287: my $dfh;
288: if (open($dfh,"<$dfilename")) {
289: $wcmd=<$dfh>;
290: close($dfh);
291: }
292: }
293: chomp($wcmd);
294: if ($wcmd eq $cmd) {
295: &logthis("<font color=\"blue\">WARNING: ".
296: "Connection buffer $dfilename: $cmd</font>");
297: &logperm("D:$server:$cmd");
298: return 'con_delayed';
299: } else {
300: &logthis("<font color=\"red\">CRITICAL:"
301: ." Critical connection failed: $server $cmd</font>");
302: &logperm("F:$server:$cmd");
303: return 'con_failed';
304: }
305: }
306: }
307: return $answer;
308: }
309:
310: # ------------------------------------------- check if return value is an error
311:
312: sub error {
313: my ($result) = @_;
314: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
315: if ($2 == 2) { return undef; }
316: return $1;
317: }
318: return undef;
319: }
320:
321: sub convert_and_load_session_env {
322: my ($lonidsdir,$handle)=@_;
323: my @profile;
324: {
325: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
326: if (!$opened) {
327: return 0;
328: }
329: flock($idf,LOCK_SH);
330: @profile=<$idf>;
331: close($idf);
332: }
333: my %temp_env;
334: foreach my $line (@profile) {
335: if ($line !~ m/=/) {
336: return 0;
337: }
338: chomp($line);
339: my ($envname,$envvalue)=split(/=/,$line,2);
340: $temp_env{&unescape($envname)} = &unescape($envvalue);
341: }
342: unlink("$lonidsdir/$handle.id");
343: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
344: 0640)) {
345: %disk_env = %temp_env;
346: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
347: untie(%disk_env);
348: }
349: return 1;
350: }
351:
352: # ------------------------------------------- Transfer profile into environment
353: my $env_loaded;
354: sub transfer_profile_to_env {
355: my ($lonidsdir,$handle,$force_transfer) = @_;
356: if (!$force_transfer && $env_loaded) { return; }
357:
358: if (!defined($lonidsdir)) {
359: $lonidsdir = $perlvar{'lonIDsDir'};
360: }
361: if (!defined($handle)) {
362: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
363: }
364:
365: my $convert;
366: {
367: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
368: if (!$opened) {
369: return;
370: }
371: flock($idf,LOCK_SH);
372: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
373: &GDBM_READER(),0640)) {
374: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
375: untie(%disk_env);
376: } else {
377: $convert = 1;
378: }
379: }
380: if ($convert) {
381: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
382: &logthis("Failed to load session, or convert session.");
383: }
384: }
385:
386: my %remove;
387: while ( my $envname = each(%env) ) {
388: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
389: if ($time < time-300) {
390: $remove{$key}++;
391: }
392: }
393: }
394:
395: $env{'user.environment'} = "$lonidsdir/$handle.id";
396: $env_loaded=1;
397: foreach my $expired_key (keys(%remove)) {
398: &delenv($expired_key);
399: }
400: }
401:
402: # ---------------------------------------------------- Check for valid session
403: sub check_for_valid_session {
404: my ($r) = @_;
405: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
406: my $lonid=$cookies{'lonID'};
407: return undef if (!$lonid);
408:
409: my $handle=&LONCAPA::clean_handle($lonid->value);
410: my $lonidsdir=$r->dir_config('lonIDsDir');
411: return undef if (!-e "$lonidsdir/$handle.id");
412:
413: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
414: return undef if (!$opened);
415:
416: flock($idf,LOCK_SH);
417: my %disk_env;
418: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
419: &GDBM_READER(),0640)) {
420: return undef;
421: }
422:
423: if (!defined($disk_env{'user.name'})
424: || !defined($disk_env{'user.domain'})) {
425: return undef;
426: }
427: return $handle;
428: }
429:
430: sub timed_flock {
431: my ($file,$lock_type) = @_;
432: my $failed=0;
433: eval {
434: local $SIG{__DIE__}='DEFAULT';
435: local $SIG{ALRM}=sub {
436: $failed=1;
437: die("failed lock");
438: };
439: alarm(13);
440: flock($file,$lock_type);
441: alarm(0);
442: };
443: if ($failed) {
444: return undef;
445: } else {
446: return 1;
447: }
448: }
449:
450: # ---------------------------------------------------------- Append Environment
451:
452: sub appenv {
453: my ($newenv,$roles) = @_;
454: if (ref($newenv) eq 'HASH') {
455: foreach my $key (keys(%{$newenv})) {
456: my $refused = 0;
457: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
458: $refused = 1;
459: if (ref($roles) eq 'ARRAY') {
460: my ($type,$role) = ($key =~ /^user\.(role|priv)\.([^.]+)\./);
461: if (grep(/^\Q$role\E$/,@{$roles})) {
462: $refused = 0;
463: }
464: }
465: }
466: if ($refused) {
467: &logthis("<font color=\"blue\">WARNING: ".
468: "Attempt to modify environment ".$key." to ".$newenv->{$key}
469: .'</font>');
470: delete($newenv->{$key});
471: } else {
472: $env{$key}=$newenv->{$key};
473: }
474: }
475: my $opened = open(my $env_file,'+<',$env{'user.environment'});
476: if ($opened
477: && &timed_flock($env_file,LOCK_EX)
478: &&
479: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
480: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
481: while (my ($key,$value) = each(%{$newenv})) {
482: $disk_env{$key} = $value;
483: }
484: untie(%disk_env);
485: }
486: }
487: return 'ok';
488: }
489: # ----------------------------------------------------- Delete from Environment
490:
491: sub delenv {
492: my $delthis=shift;
493: if (($delthis=~/user\.role/) || ($delthis=~/user\.priv/)) {
494: &logthis("<font color=\"blue\">WARNING: ".
495: "Attempt to delete from environment ".$delthis);
496: return 'error';
497: }
498: my $opened = open(my $env_file,'+<',$env{'user.environment'});
499: if ($opened
500: && &timed_flock($env_file,LOCK_EX)
501: &&
502: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
503: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
504: foreach my $key (keys(%disk_env)) {
505: if ($key=~/^$delthis/) {
506: delete($env{$key});
507: delete($disk_env{$key});
508: }
509: }
510: untie(%disk_env);
511: }
512: return 'ok';
513: }
514:
515: sub get_env_multiple {
516: my ($name) = @_;
517: my @values;
518: if (defined($env{$name})) {
519: # exists is it an array
520: if (ref($env{$name})) {
521: @values=@{ $env{$name} };
522: } else {
523: $values[0]=$env{$name};
524: }
525: }
526: return(@values);
527: }
528:
529: # ------------------------------------------------------------------- Locking
530:
531: sub set_lock {
532: my ($text)=@_;
533: $locknum++;
534: my $id=$$.'-'.$locknum;
535: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
536: 'session.lock.'.$id => $text});
537: return $id;
538: }
539:
540: sub get_locks {
541: my $num=0;
542: my %texts=();
543: foreach my $lock (split(/\,/,$env{'session.locks'})) {
544: if ($lock=~/\w/) {
545: $num++;
546: $texts{$lock}=$env{'session.lock.'.$lock};
547: }
548: }
549: return ($num,%texts);
550: }
551:
552: sub remove_lock {
553: my ($id)=@_;
554: my $newlocks='';
555: foreach my $lock (split(/\,/,$env{'session.locks'})) {
556: if (($lock=~/\w/) && ($lock ne $id)) {
557: $newlocks.=','.$lock;
558: }
559: }
560: &appenv({'session.locks' => $newlocks});
561: &delenv('session.lock.'.$id);
562: }
563:
564: sub remove_all_locks {
565: my $activelocks=$env{'session.locks'};
566: foreach my $lock (split(/\,/,$env{'session.locks'})) {
567: if ($lock=~/\w/) {
568: &remove_lock($lock);
569: }
570: }
571: }
572:
573:
574: # ------------------------------------------ Find out current server userload
575: sub userload {
576: my $numusers=0;
577: {
578: opendir(LONIDS,$perlvar{'lonIDsDir'});
579: my $filename;
580: my $curtime=time;
581: while ($filename=readdir(LONIDS)) {
582: next if ($filename eq '.' || $filename eq '..');
583: next if ($filename =~ /publicuser_\d+\.id/);
584: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
585: if ($curtime-$mtime < 1800) { $numusers++; }
586: }
587: closedir(LONIDS);
588: }
589: my $userloadpercent=0;
590: my $maxuserload=$perlvar{'lonUserLoadLim'};
591: if ($maxuserload) {
592: $userloadpercent=100*$numusers/$maxuserload;
593: }
594: $userloadpercent=sprintf("%.2f",$userloadpercent);
595: return $userloadpercent;
596: }
597:
598: # ------------------------------------------ Fight off request when overloaded
599:
600: sub overloaderror {
601: my ($r,$checkserver)=@_;
602: unless ($checkserver) { $checkserver=$perlvar{'lonHostID'}; }
603: my $loadavg;
604: if ($checkserver eq $perlvar{'lonHostID'}) {
605: open(my $loadfile,'/proc/loadavg');
606: $loadavg=<$loadfile>;
607: $loadavg =~ s/\s.*//g;
608: $loadavg = 100*$loadavg/$perlvar{'lonLoadLim'};
609: close($loadfile);
610: } else {
611: $loadavg=&reply('load',$checkserver);
612: }
613: my $overload=$loadavg-100;
614: if ($overload>0) {
615: $r->err_headers_out->{'Retry-After'}=$overload;
616: $r->log_error('Overload of '.$overload.' on '.$checkserver);
617: return 413;
618: }
619: return '';
620: }
621:
622: # ------------------------------ Find server with least workload from spare.tab
623:
624: sub spareserver {
625: my ($loadpercent,$userloadpercent,$want_server_name) = @_;
626: my $spare_server;
627: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
628: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
629: : $userloadpercent;
630:
631: foreach my $try_server (@{ $spareid{'primary'} }) {
632: ($spare_server, $lowest_load) =
633: &compare_server_load($try_server, $spare_server, $lowest_load);
634: }
635:
636: my $found_server = ($spare_server ne '' && $lowest_load < 100);
637:
638: if (!$found_server) {
639: foreach my $try_server (@{ $spareid{'default'} }) {
640: ($spare_server, $lowest_load) =
641: &compare_server_load($try_server, $spare_server, $lowest_load);
642: }
643: }
644:
645: if (!$want_server_name) {
646: $spare_server="http://".&hostname($spare_server);
647: }
648: return $spare_server;
649: }
650:
651: sub compare_server_load {
652: my ($try_server, $spare_server, $lowest_load) = @_;
653:
654: my $loadans = &reply('load', $try_server);
655: my $userloadans = &reply('userload',$try_server);
656:
657: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
658: next; #didn't get a number from the server
659: }
660:
661: my $load;
662: if ($loadans =~ /\d/) {
663: if ($userloadans =~ /\d/) {
664: #both are numbers, pick the bigger one
665: $load = ($loadans > $userloadans) ? $loadans
666: : $userloadans;
667: } else {
668: $load = $loadans;
669: }
670: } else {
671: $load = $userloadans;
672: }
673:
674: if (($load =~ /\d/) && ($load < $lowest_load)) {
675: $spare_server = $try_server;
676: $lowest_load = $load;
677: }
678: return ($spare_server,$lowest_load);
679: }
680:
681: # --------------------------- ask offload servers if user already has a session
682: sub find_existing_session {
683: my ($udom,$uname) = @_;
684: foreach my $try_server (@{ $spareid{'primary'} },
685: @{ $spareid{'default'} }) {
686: return $try_server if (&has_user_session($try_server, $udom, $uname));
687: }
688: return;
689: }
690:
691: # -------------------------------- ask if server already has a session for user
692: sub has_user_session {
693: my ($lonid,$udom,$uname) = @_;
694: my $result = &reply(join(':','userhassession',
695: map {&escape($_)} ($udom,$uname)),$lonid);
696: return 1 if ($result eq 'ok');
697:
698: return 0;
699: }
700:
701: # --------------------------------------------- Try to change a user's password
702:
703: sub changepass {
704: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
705: $currentpass = &escape($currentpass);
706: $newpass = &escape($newpass);
707: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context",
708: $server);
709: if (! $answer) {
710: &logthis("No reply on password change request to $server ".
711: "by $uname in domain $udom.");
712: } elsif ($answer =~ "^ok") {
713: &logthis("$uname in $udom successfully changed their password ".
714: "on $server.");
715: } elsif ($answer =~ "^pwchange_failure") {
716: &logthis("$uname in $udom was unable to change their password ".
717: "on $server. The action was blocked by either lcpasswd ".
718: "or pwchange");
719: } elsif ($answer =~ "^non_authorized") {
720: &logthis("$uname in $udom did not get their password correct when ".
721: "attempting to change it on $server.");
722: } elsif ($answer =~ "^auth_mode_error") {
723: &logthis("$uname in $udom attempted to change their password despite ".
724: "not being locally or internally authenticated on $server.");
725: } elsif ($answer =~ "^unknown_user") {
726: &logthis("$uname in $udom attempted to change their password ".
727: "on $server but were unable to because $server is not ".
728: "their home server.");
729: } elsif ($answer =~ "^refused") {
730: &logthis("$server refused to change $uname in $udom password because ".
731: "it was sent an unencrypted request to change the password.");
732: }
733: return $answer;
734: }
735:
736: # ----------------------- Try to determine user's current authentication scheme
737:
738: sub queryauthenticate {
739: my ($uname,$udom)=@_;
740: my $uhome=&homeserver($uname,$udom);
741: if (!$uhome) {
742: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
743: return 'no_host';
744: }
745: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
746: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
747: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
748: }
749: return $answer;
750: }
751:
752: # --------- Try to authenticate user from domain's lib servers (first this one)
753:
754: sub authenticate {
755: my ($uname,$upass,$udom,$checkdefauth)=@_;
756: $upass=&escape($upass);
757: $uname= &LONCAPA::clean_username($uname);
758: my $uhome=&homeserver($uname,$udom,1);
759: my $newhome;
760: if ((!$uhome) || ($uhome eq 'no_host')) {
761: # Maybe the machine was offline and only re-appeared again recently?
762: &reconlonc();
763: # One more
764: $uhome=&homeserver($uname,$udom,1);
765: if (($uhome eq 'no_host') && $checkdefauth) {
766: if (defined(&domain($udom,'primary'))) {
767: $newhome=&domain($udom,'primary');
768: }
769: if ($newhome ne '') {
770: $uhome = $newhome;
771: }
772: }
773: if ((!$uhome) || ($uhome eq 'no_host')) {
774: &logthis("User $uname at $udom is unknown in authenticate");
775: return 'no_host';
776: }
777: }
778: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth",$uhome);
779: if ($answer eq 'authorized') {
780: if ($newhome) {
781: &logthis("User $uname at $udom authorized by $uhome, but needs account");
782: return 'no_account_on_host';
783: } else {
784: &logthis("User $uname at $udom authorized by $uhome");
785: return $uhome;
786: }
787: }
788: if ($answer eq 'non_authorized') {
789: &logthis("User $uname at $udom rejected by $uhome");
790: return 'no_host';
791: }
792: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
793: return 'no_host';
794: }
795:
796: # ---------------------- Find the homebase for a user from domain's lib servers
797:
798: my %homecache;
799: sub homeserver {
800: my ($uname,$udom,$ignoreBadCache)=@_;
801: my $index="$uname:$udom";
802:
803: if (exists($homecache{$index})) { return $homecache{$index}; }
804:
805: my %servers = &get_servers($udom,'library');
806: foreach my $tryserver (keys(%servers)) {
807: next if ($ignoreBadCache ne 'true' &&
808: exists($badServerCache{$tryserver}));
809:
810: my $answer=reply("home:$udom:$uname",$tryserver);
811: if ($answer eq 'found') {
812: delete($badServerCache{$tryserver});
813: return $homecache{$index}=$tryserver;
814: } elsif ($answer eq 'no_host') {
815: $badServerCache{$tryserver}=1;
816: }
817: }
818: return 'no_host';
819: }
820:
821: # ------------------------------------- Find the usernames behind a list of IDs
822:
823: sub idget {
824: my ($udom,@ids)=@_;
825: my %returnhash=();
826:
827: my %servers = &get_servers($udom,'library');
828: foreach my $tryserver (keys(%servers)) {
829: my $idlist=join('&',@ids);
830: $idlist=~tr/A-Z/a-z/;
831: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
832: my @answer=();
833: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
834: @answer=split(/\&/,$reply);
835: } ;
836: my $i;
837: for ($i=0;$i<=$#ids;$i++) {
838: if ($answer[$i]) {
839: $returnhash{$ids[$i]}=$answer[$i];
840: }
841: }
842: }
843: return %returnhash;
844: }
845:
846: # ------------------------------------- Find the IDs behind a list of usernames
847:
848: sub idrget {
849: my ($udom,@unames)=@_;
850: my %returnhash=();
851: foreach my $uname (@unames) {
852: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
853: }
854: return %returnhash;
855: }
856:
857: # ------------------------------- Store away a list of names and associated IDs
858:
859: sub idput {
860: my ($udom,%ids)=@_;
861: my %servers=();
862: foreach my $uname (keys(%ids)) {
863: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
864: my $uhom=&homeserver($uname,$udom);
865: if ($uhom ne 'no_host') {
866: my $id=&escape($ids{$uname});
867: $id=~tr/A-Z/a-z/;
868: my $esc_unam=&escape($uname);
869: if ($servers{$uhom}) {
870: $servers{$uhom}.='&'.$id.'='.$esc_unam;
871: } else {
872: $servers{$uhom}=$id.'='.$esc_unam;
873: }
874: }
875: }
876: foreach my $server (keys(%servers)) {
877: &critical('idput:'.$udom.':'.$servers{$server},$server);
878: }
879: }
880:
881: # ------------------------------------------- get items from domain db files
882:
883: sub get_dom {
884: my ($namespace,$storearr,$udom,$uhome)=@_;
885: my $items='';
886: foreach my $item (@$storearr) {
887: $items.=&escape($item).'&';
888: }
889: $items=~s/\&$//;
890: if (!$udom) {
891: $udom=$env{'user.domain'};
892: if (defined(&domain($udom,'primary'))) {
893: $uhome=&domain($udom,'primary');
894: } else {
895: undef($uhome);
896: }
897: } else {
898: if (!$uhome) {
899: if (defined(&domain($udom,'primary'))) {
900: $uhome=&domain($udom,'primary');
901: }
902: }
903: }
904: if ($udom && $uhome && ($uhome ne 'no_host')) {
905: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
906: my %returnhash;
907: if ($rep eq '' || $rep =~ /^error: 2 /) {
908: return %returnhash;
909: }
910: my @pairs=split(/\&/,$rep);
911: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
912: return @pairs;
913: }
914: my $i=0;
915: foreach my $item (@$storearr) {
916: $returnhash{$item}=&thaw_unescape($pairs[$i]);
917: $i++;
918: }
919: return %returnhash;
920: } else {
921: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
922: }
923: }
924:
925: # -------------------------------------------- put items in domain db files
926:
927: sub put_dom {
928: my ($namespace,$storehash,$udom,$uhome)=@_;
929: if (!$udom) {
930: $udom=$env{'user.domain'};
931: if (defined(&domain($udom,'primary'))) {
932: $uhome=&domain($udom,'primary');
933: } else {
934: undef($uhome);
935: }
936: } else {
937: if (!$uhome) {
938: if (defined(&domain($udom,'primary'))) {
939: $uhome=&domain($udom,'primary');
940: }
941: }
942: }
943: if ($udom && $uhome && ($uhome ne 'no_host')) {
944: my $items='';
945: foreach my $item (keys(%$storehash)) {
946: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
947: }
948: $items=~s/\&$//;
949: return &reply("putdom:$udom:$namespace:$items",$uhome);
950: } else {
951: &logthis("put_dom failed - no homeserver and/or domain");
952: }
953: }
954:
955: sub retrieve_inst_usertypes {
956: my ($udom) = @_;
957: my (%returnhash,@order);
958: if (defined(&domain($udom,'primary'))) {
959: my $uhome=&domain($udom,'primary');
960: my $rep=&reply("inst_usertypes:$udom",$uhome);
961: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
962: &logthis("get_dom failed - $rep returned from $uhome in domain: $udom");
963: return (\%returnhash,\@order);
964: }
965: my ($hashitems,$orderitems) = split(/:/,$rep);
966: my @pairs=split(/\&/,$hashitems);
967: foreach my $item (@pairs) {
968: my ($key,$value)=split(/=/,$item,2);
969: $key = &unescape($key);
970: next if ($key =~ /^error: 2 /);
971: $returnhash{$key}=&thaw_unescape($value);
972: }
973: my @esc_order = split(/\&/,$orderitems);
974: foreach my $item (@esc_order) {
975: push(@order,&unescape($item));
976: }
977: } else {
978: &logthis("get_dom failed - no primary domain server for $udom");
979: }
980: return (\%returnhash,\@order);
981: }
982:
983: sub is_domainimage {
984: my ($url) = @_;
985: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
986: if (&domain($1) ne '') {
987: return '1';
988: }
989: }
990: return;
991: }
992:
993: sub inst_directory_query {
994: my ($srch) = @_;
995: my $udom = $srch->{'srchdomain'};
996: my %results;
997: my $homeserver = &domain($udom,'primary');
998: my $outcome;
999: if ($homeserver ne '') {
1000: my $queryid=&reply("querysend:instdirsearch:".
1001: &escape($srch->{'srchby'}).':'.
1002: &escape($srch->{'srchterm'}).':'.
1003: &escape($srch->{'srchtype'}),$homeserver);
1004: my $host=&hostname($homeserver);
1005: if ($queryid !~/^\Q$host\E\_/) {
1006: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1007: return;
1008: }
1009: my $response = &get_query_reply($queryid);
1010: my $maxtries = 5;
1011: my $tries = 1;
1012: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1013: $response = &get_query_reply($queryid);
1014: $tries ++;
1015: }
1016:
1017: if (!&error($response) && $response ne 'refused') {
1018: if ($response eq 'unavailable') {
1019: $outcome = $response;
1020: } else {
1021: $outcome = 'ok';
1022: my @matches = split(/\n/,$response);
1023: foreach my $match (@matches) {
1024: my ($key,$value) = split(/=/,$match);
1025: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1026: }
1027: }
1028: }
1029: }
1030: return ($outcome,%results);
1031: }
1032:
1033: sub usersearch {
1034: my ($srch) = @_;
1035: my $dom = $srch->{'srchdomain'};
1036: my %results;
1037: my %libserv = &all_library();
1038: my $query = 'usersearch';
1039: foreach my $tryserver (keys(%libserv)) {
1040: if (&host_domain($tryserver) eq $dom) {
1041: my $host=&hostname($tryserver);
1042: my $queryid=
1043: &reply("querysend:".&escape($query).':'.
1044: &escape($srch->{'srchby'}).':'.
1045: &escape($srch->{'srchtype'}).':'.
1046: &escape($srch->{'srchterm'}),$tryserver);
1047: if ($queryid !~/^\Q$host\E\_/) {
1048: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1049: next;
1050: }
1051: my $reply = &get_query_reply($queryid);
1052: my $maxtries = 1;
1053: my $tries = 1;
1054: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1055: $reply = &get_query_reply($queryid);
1056: $tries ++;
1057: }
1058: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1059: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1060: } else {
1061: my @matches;
1062: if ($reply =~ /\n/) {
1063: @matches = split(/\n/,$reply);
1064: } else {
1065: @matches = split(/\&/,$reply);
1066: }
1067: foreach my $match (@matches) {
1068: my ($uname,$udom,%userhash);
1069: foreach my $entry (split(/:/,$match)) {
1070: my ($key,$value) =
1071: map {&unescape($_);} split(/=/,$entry);
1072: $userhash{$key} = $value;
1073: if ($key eq 'username') {
1074: $uname = $value;
1075: } elsif ($key eq 'domain') {
1076: $udom = $value;
1077: }
1078: }
1079: $results{$uname.':'.$udom} = \%userhash;
1080: }
1081: }
1082: }
1083: }
1084: return %results;
1085: }
1086:
1087: sub get_instuser {
1088: my ($udom,$uname,$id) = @_;
1089: my $homeserver = &domain($udom,'primary');
1090: my ($outcome,%results);
1091: if ($homeserver ne '') {
1092: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1093: &escape($id).':'.&escape($udom),$homeserver);
1094: my $host=&hostname($homeserver);
1095: if ($queryid !~/^\Q$host\E\_/) {
1096: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1097: return;
1098: }
1099: my $response = &get_query_reply($queryid);
1100: my $maxtries = 5;
1101: my $tries = 1;
1102: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1103: $response = &get_query_reply($queryid);
1104: $tries ++;
1105: }
1106: if (!&error($response) && $response ne 'refused') {
1107: if ($response eq 'unavailable') {
1108: $outcome = $response;
1109: } else {
1110: $outcome = 'ok';
1111: my @matches = split(/\n/,$response);
1112: foreach my $match (@matches) {
1113: my ($key,$value) = split(/=/,$match);
1114: $results{&unescape($key)} = &thaw_unescape($value);
1115: }
1116: }
1117: }
1118: }
1119: my %userinfo;
1120: if (ref($results{$uname}) eq 'HASH') {
1121: %userinfo = %{$results{$uname}};
1122: }
1123: return ($outcome,%userinfo);
1124: }
1125:
1126: sub inst_rulecheck {
1127: my ($udom,$uname,$id,$item,$rules) = @_;
1128: my %returnhash;
1129: if ($udom ne '') {
1130: if (ref($rules) eq 'ARRAY') {
1131: @{$rules} = map {&escape($_);} (@{$rules});
1132: my $rulestr = join(':',@{$rules});
1133: my $homeserver=&domain($udom,'primary');
1134: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1135: my $response;
1136: if ($item eq 'username') {
1137: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1138: ':'.&escape($uname).':'.$rulestr,
1139: $homeserver));
1140: } elsif ($item eq 'id') {
1141: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1142: ':'.&escape($id).':'.$rulestr,
1143: $homeserver));
1144: } elsif ($item eq 'selfcreate') {
1145: $response=&unescape(&reply('instselfcreatecheck:'.
1146: &escape($udom).':'.&escape($uname).
1147: ':'.$rulestr,$homeserver));
1148: }
1149: if ($response ne 'refused') {
1150: my @pairs=split(/\&/,$response);
1151: foreach my $item (@pairs) {
1152: my ($key,$value)=split(/=/,$item,2);
1153: $key = &unescape($key);
1154: next if ($key =~ /^error: 2 /);
1155: $returnhash{$key}=&thaw_unescape($value);
1156: }
1157: }
1158: }
1159: }
1160: }
1161: return %returnhash;
1162: }
1163:
1164: sub inst_userrules {
1165: my ($udom,$check) = @_;
1166: my (%ruleshash,@ruleorder);
1167: if ($udom ne '') {
1168: my $homeserver=&domain($udom,'primary');
1169: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1170: my $response;
1171: if ($check eq 'id') {
1172: $response=&reply('instidrules:'.&escape($udom),
1173: $homeserver);
1174: } elsif ($check eq 'email') {
1175: $response=&reply('instemailrules:'.&escape($udom),
1176: $homeserver);
1177: } else {
1178: $response=&reply('instuserrules:'.&escape($udom),
1179: $homeserver);
1180: }
1181: if (($response ne 'refused') && ($response ne 'error') &&
1182: ($response ne 'unknown_cmd') &&
1183: ($response ne 'no_such_host')) {
1184: my ($hashitems,$orderitems) = split(/:/,$response);
1185: my @pairs=split(/\&/,$hashitems);
1186: foreach my $item (@pairs) {
1187: my ($key,$value)=split(/=/,$item,2);
1188: $key = &unescape($key);
1189: next if ($key =~ /^error: 2 /);
1190: $ruleshash{$key}=&thaw_unescape($value);
1191: }
1192: my @esc_order = split(/\&/,$orderitems);
1193: foreach my $item (@esc_order) {
1194: push(@ruleorder,&unescape($item));
1195: }
1196: }
1197: }
1198: }
1199: return (\%ruleshash,\@ruleorder);
1200: }
1201:
1202: # ------------------------- Get Authentication and Language Defaults for Domain
1203:
1204: sub get_domain_defaults {
1205: my ($domain) = @_;
1206: my $cachetime = 60*60*24;
1207: my ($defauthtype,$defautharg,$deflang);
1208: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1209: if (defined($cached)) {
1210: if (ref($result) eq 'HASH') {
1211: return %{$result};
1212: }
1213: }
1214: my %domdefaults;
1215: my %domconfig =
1216: &Apache::lonnet::get_dom('configuration',['defaults'],$domain);
1217: if (ref($domconfig{'defaults'}) eq 'HASH') {
1218: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
1219: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
1220: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
1221: } else {
1222: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
1223: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
1224: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
1225: }
1226: &Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,
1227: $cachetime);
1228: return %domdefaults;
1229: }
1230:
1231: # --------------------------------------------------- Assign a key to a student
1232:
1233: sub assign_access_key {
1234: #
1235: # a valid key looks like uname:udom#comments
1236: # comments are being appended
1237: #
1238: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
1239: $kdom=
1240: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
1241: $knum=
1242: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
1243: $cdom=
1244: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1245: $cnum=
1246: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1247: $udom=$env{'user.name'} unless (defined($udom));
1248: $uname=$env{'user.domain'} unless (defined($uname));
1249: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
1250: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
1251: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
1252: # assigned to this person
1253: # - this should not happen,
1254: # unless something went wrong
1255: # the first time around
1256: # ready to assign
1257: $logentry=$1.'; '.$logentry;
1258: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
1259: $kdom,$knum) eq 'ok') {
1260: # key now belongs to user
1261: my $envkey='key.'.$cdom.'_'.$cnum;
1262: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
1263: &appenv({'environment.'.$envkey => $ckey});
1264: return 'ok';
1265: } else {
1266: return
1267: 'error: Count not permanently assign key, will need to be re-entered later.';
1268: }
1269: } else {
1270: return 'error: Could not assign key, try again later.';
1271: }
1272: } elsif (!$existing{$ckey}) {
1273: # the key does not exist
1274: return 'error: The key does not exist';
1275: } else {
1276: # the key is somebody else's
1277: return 'error: The key is already in use';
1278: }
1279: }
1280:
1281: # ------------------------------------------ put an additional comment on a key
1282:
1283: sub comment_access_key {
1284: #
1285: # a valid key looks like uname:udom#comments
1286: # comments are being appended
1287: #
1288: my ($ckey,$cdom,$cnum,$logentry)=@_;
1289: $cdom=
1290: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1291: $cnum=
1292: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1293: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1294: if ($existing{$ckey}) {
1295: $existing{$ckey}.='; '.$logentry;
1296: # ready to assign
1297: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
1298: $cdom,$cnum) eq 'ok') {
1299: return 'ok';
1300: } else {
1301: return 'error: Count not store comment.';
1302: }
1303: } else {
1304: # the key does not exist
1305: return 'error: The key does not exist';
1306: }
1307: }
1308:
1309: # ------------------------------------------------------ Generate a set of keys
1310:
1311: sub generate_access_keys {
1312: my ($number,$cdom,$cnum,$logentry)=@_;
1313: $cdom=
1314: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1315: $cnum=
1316: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1317: unless (&allowed('mky',$cdom)) { return 0; }
1318: unless (($cdom) && ($cnum)) { return 0; }
1319: if ($number>10000) { return 0; }
1320: sleep(2); # make sure don't get same seed twice
1321: srand(time()^($$+($$<<15))); # from "Programming Perl"
1322: my $total=0;
1323: for (my $i=1;$i<=$number;$i++) {
1324: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
1325: sprintf("%lx",int(100000*rand)).'-'.
1326: sprintf("%lx",int(100000*rand));
1327: $newkey=~s/1/g/g; # folks mix up 1 and l
1328: $newkey=~s/0/h/g; # and also 0 and O
1329: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
1330: if ($existing{$newkey}) {
1331: $i--;
1332: } else {
1333: if (&put('accesskeys',
1334: { $newkey => '# generated '.localtime().
1335: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
1336: '; '.$logentry },
1337: $cdom,$cnum) eq 'ok') {
1338: $total++;
1339: }
1340: }
1341: }
1342: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
1343: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
1344: return $total;
1345: }
1346:
1347: # ------------------------------------------------------- Validate an accesskey
1348:
1349: sub validate_access_key {
1350: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
1351: $cdom=
1352: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1353: $cnum=
1354: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1355: $udom=$env{'user.domain'} unless (defined($udom));
1356: $uname=$env{'user.name'} unless (defined($uname));
1357: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1358: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
1359: }
1360:
1361: # ------------------------------------- Find the section of student in a course
1362: sub devalidate_getsection_cache {
1363: my ($udom,$unam,$courseid)=@_;
1364: my $hashid="$udom:$unam:$courseid";
1365: &devalidate_cache_new('getsection',$hashid);
1366: }
1367:
1368: sub courseid_to_courseurl {
1369: my ($courseid) = @_;
1370: #already url style courseid
1371: return $courseid if ($courseid =~ m{^/});
1372:
1373: if (exists($env{'course.'.$courseid.'.num'})) {
1374: my $cnum = $env{'course.'.$courseid.'.num'};
1375: my $cdom = $env{'course.'.$courseid.'.domain'};
1376: return "/$cdom/$cnum";
1377: }
1378:
1379: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
1380: if (exists($courseinfo{'num'})) {
1381: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
1382: }
1383:
1384: return undef;
1385: }
1386:
1387: sub getsection {
1388: my ($udom,$unam,$courseid)=@_;
1389: my $cachetime=1800;
1390:
1391: my $hashid="$udom:$unam:$courseid";
1392: my ($result,$cached)=&is_cached_new('getsection',$hashid);
1393: if (defined($cached)) { return $result; }
1394:
1395: my %Pending;
1396: my %Expired;
1397: #
1398: # Each role can either have not started yet (pending), be active,
1399: # or have expired.
1400: #
1401: # If there is an active role, we are done.
1402: #
1403: # If there is more than one role which has not started yet,
1404: # choose the one which will start sooner
1405: # If there is one role which has not started yet, return it.
1406: #
1407: # If there is more than one expired role, choose the one which ended last.
1408: # If there is a role which has expired, return it.
1409: #
1410: $courseid = &courseid_to_courseurl($courseid);
1411: my %roleshash = &dump('roles',$udom,$unam,$courseid);
1412: foreach my $key (keys(%roleshash)) {
1413: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
1414: my $section=$1;
1415: if ($key eq $courseid.'_st') { $section=''; }
1416: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
1417: my $now=time;
1418: if (defined($end) && $end && ($now > $end)) {
1419: $Expired{$end}=$section;
1420: next;
1421: }
1422: if (defined($start) && $start && ($now < $start)) {
1423: $Pending{$start}=$section;
1424: next;
1425: }
1426: return &do_cache_new('getsection',$hashid,$section,$cachetime);
1427: }
1428: #
1429: # Presumedly there will be few matching roles from the above
1430: # loop and the sorting time will be negligible.
1431: if (scalar(keys(%Pending))) {
1432: my ($time) = sort {$a <=> $b} keys(%Pending);
1433: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
1434: }
1435: if (scalar(keys(%Expired))) {
1436: my @sorted = sort {$a <=> $b} keys(%Expired);
1437: my $time = pop(@sorted);
1438: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
1439: }
1440: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
1441: }
1442:
1443: sub save_cache {
1444: &purge_remembered();
1445: #&Apache::loncommon::validate_page();
1446: undef(%env);
1447: undef($env_loaded);
1448: }
1449:
1450: my $to_remember=-1;
1451: my %remembered;
1452: my %accessed;
1453: my $kicks=0;
1454: my $hits=0;
1455: sub make_key {
1456: my ($name,$id) = @_;
1457: if (length($id) > 65
1458: && length(&escape($id)) > 200) {
1459: $id=length($id).':'.&Digest::MD5::md5_hex($id);
1460: }
1461: return &escape($name.':'.$id);
1462: }
1463:
1464: sub devalidate_cache_new {
1465: my ($name,$id,$debug) = @_;
1466: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
1467: $id=&make_key($name,$id);
1468: $memcache->delete($id);
1469: delete($remembered{$id});
1470: delete($accessed{$id});
1471: }
1472:
1473: sub is_cached_new {
1474: my ($name,$id,$debug) = @_;
1475: $id=&make_key($name,$id);
1476: if (exists($remembered{$id})) {
1477: if ($debug) { &Apache::lonnet::logthis("Earyl return $id of $remembered{$id} "); }
1478: $accessed{$id}=[&gettimeofday()];
1479: $hits++;
1480: return ($remembered{$id},1);
1481: }
1482: my $value = $memcache->get($id);
1483: if (!(defined($value))) {
1484: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
1485: return (undef,undef);
1486: }
1487: if ($value eq '__undef__') {
1488: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
1489: $value=undef;
1490: }
1491: &make_room($id,$value,$debug);
1492: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
1493: return ($value,1);
1494: }
1495:
1496: sub do_cache_new {
1497: my ($name,$id,$value,$time,$debug) = @_;
1498: $id=&make_key($name,$id);
1499: my $setvalue=$value;
1500: if (!defined($setvalue)) {
1501: $setvalue='__undef__';
1502: }
1503: if (!defined($time) ) {
1504: $time=600;
1505: }
1506: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
1507: my $result = $memcache->set($id,$setvalue,$time);
1508: if (! $result) {
1509: &logthis("caching of id -> $id failed");
1510: $memcache->disconnect_all();
1511: }
1512: # need to make a copy of $value
1513: &make_room($id,$value,$debug);
1514: return $value;
1515: }
1516:
1517: sub make_room {
1518: my ($id,$value,$debug)=@_;
1519:
1520: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
1521: : $value;
1522: if ($to_remember<0) { return; }
1523: $accessed{$id}=[&gettimeofday()];
1524: if (scalar(keys(%remembered)) <= $to_remember) { return; }
1525: my $to_kick;
1526: my $max_time=0;
1527: foreach my $other (keys(%accessed)) {
1528: if (&tv_interval($accessed{$other}) > $max_time) {
1529: $to_kick=$other;
1530: $max_time=&tv_interval($accessed{$other});
1531: }
1532: }
1533: delete($remembered{$to_kick});
1534: delete($accessed{$to_kick});
1535: $kicks++;
1536: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
1537: return;
1538: }
1539:
1540: sub purge_remembered {
1541: #&logthis("Tossing ".scalar(keys(%remembered)));
1542: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
1543: undef(%remembered);
1544: undef(%accessed);
1545: }
1546: # ------------------------------------- Read an entry from a user's environment
1547:
1548: sub userenvironment {
1549: my ($udom,$unam,@what)=@_;
1550: my %returnhash=();
1551: my @answer=split(/\&/,
1552: &reply('get:'.$udom.':'.$unam.':environment:'.join('&',@what),
1553: &homeserver($unam,$udom)));
1554: my $i;
1555: for ($i=0;$i<=$#what;$i++) {
1556: $returnhash{$what[$i]}=&unescape($answer[$i]);
1557: }
1558: return %returnhash;
1559: }
1560:
1561: # ---------------------------------------------------------- Get a studentphoto
1562: sub studentphoto {
1563: my ($udom,$unam,$ext) = @_;
1564: my $home=&Apache::lonnet::homeserver($unam,$udom);
1565: if (defined($env{'request.course.id'})) {
1566: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
1567: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
1568: return(&retrievestudentphoto($udom,$unam,$ext));
1569: } else {
1570: my ($result,$perm_reqd)=
1571: &Apache::lonnet::auto_photo_permission($unam,$udom);
1572: if ($result eq 'ok') {
1573: if (!($perm_reqd eq 'yes')) {
1574: return(&retrievestudentphoto($udom,$unam,$ext));
1575: }
1576: }
1577: }
1578: }
1579: } else {
1580: my ($result,$perm_reqd) =
1581: &Apache::lonnet::auto_photo_permission($unam,$udom);
1582: if ($result eq 'ok') {
1583: if (!($perm_reqd eq 'yes')) {
1584: return(&retrievestudentphoto($udom,$unam,$ext));
1585: }
1586: }
1587: }
1588: return '/adm/lonKaputt/lonlogo_broken.gif';
1589: }
1590:
1591: sub retrievestudentphoto {
1592: my ($udom,$unam,$ext,$type) = @_;
1593: my $home=&Apache::lonnet::homeserver($unam,$udom);
1594: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
1595: if ($ret eq 'ok') {
1596: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
1597: if ($type eq 'thumbnail') {
1598: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
1599: }
1600: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
1601: return $tokenurl;
1602: } else {
1603: if ($type eq 'thumbnail') {
1604: return '/adm/lonKaputt/genericstudent_tn.gif';
1605: } else {
1606: return '/adm/lonKaputt/lonlogo_broken.gif';
1607: }
1608: }
1609: }
1610:
1611: # -------------------------------------------------------------------- New chat
1612:
1613: sub chatsend {
1614: my ($newentry,$anon,$group)=@_;
1615: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1616: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1617: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
1618: &reply('chatsend:'.$cdom.':'.$cnum.':'.
1619: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
1620: &escape($newentry)).':'.$group,$chome);
1621: }
1622:
1623: # ------------------------------------------ Find current version of a resource
1624:
1625: sub getversion {
1626: my $fname=&clutter(shift);
1627: unless ($fname=~/^\/res\//) { return -1; }
1628: return ¤tversion(&filelocation('',$fname));
1629: }
1630:
1631: sub currentversion {
1632: my $fname=shift;
1633: my ($result,$cached)=&is_cached_new('resversion',$fname);
1634: if (defined($cached)) { return $result; }
1635: my $author=$fname;
1636: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1637: my ($udom,$uname)=split(/\//,$author);
1638: my $home=homeserver($uname,$udom);
1639: if ($home eq 'no_host') {
1640: return -1;
1641: }
1642: my $answer=reply("currentversion:$fname",$home);
1643: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1644: return -1;
1645: }
1646: return &do_cache_new('resversion',$fname,$answer,600);
1647: }
1648:
1649: # ----------------------------- Subscribe to a resource, return URL if possible
1650:
1651: sub subscribe {
1652: my $fname=shift;
1653: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
1654: $fname=~s/[\n\r]//g;
1655: my $author=$fname;
1656: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1657: my ($udom,$uname)=split(/\//,$author);
1658: my $home=homeserver($uname,$udom);
1659: if ($home eq 'no_host') {
1660: return 'not_found';
1661: }
1662: my $answer=reply("sub:$fname",$home);
1663: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1664: $answer.=' by '.$home;
1665: }
1666: return $answer;
1667: }
1668:
1669: # -------------------------------------------------------------- Replicate file
1670:
1671: sub repcopy {
1672: my $filename=shift;
1673: $filename=~s/\/+/\//g;
1674: if ($filename=~m|^/home/httpd/html/adm/|) { return 'ok'; }
1675: if ($filename=~m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
1676: if ($filename=~m|^/home/httpd/html/userfiles/| or
1677: $filename=~m -^/*(uploaded|editupload)/-) {
1678: return &repcopy_userfile($filename);
1679: }
1680: $filename=~s/[\n\r]//g;
1681: my $transname="$filename.in.transfer";
1682: # FIXME: this should flock
1683: if ((-e $filename) || (-e $transname)) { return 'ok'; }
1684: my $remoteurl=subscribe($filename);
1685: if ($remoteurl =~ /^con_lost by/) {
1686: &logthis("Subscribe returned $remoteurl: $filename");
1687: return 'unavailable';
1688: } elsif ($remoteurl eq 'not_found') {
1689: #&logthis("Subscribe returned not_found: $filename");
1690: return 'not_found';
1691: } elsif ($remoteurl =~ /^rejected by/) {
1692: &logthis("Subscribe returned $remoteurl: $filename");
1693: return 'forbidden';
1694: } elsif ($remoteurl eq 'directory') {
1695: return 'ok';
1696: } else {
1697: my $author=$filename;
1698: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1699: my ($udom,$uname)=split(/\//,$author);
1700: my $home=homeserver($uname,$udom);
1701: unless ($home eq $perlvar{'lonHostID'}) {
1702: my @parts=split(/\//,$filename);
1703: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
1704: if ($path ne "$perlvar{'lonDocRoot'}/res") {
1705: &logthis("Malconfiguration for replication: $filename");
1706: return 'bad_request';
1707: }
1708: my $count;
1709: for ($count=5;$count<$#parts;$count++) {
1710: $path.="/$parts[$count]";
1711: if ((-e $path)!=1) {
1712: mkdir($path,0777);
1713: }
1714: }
1715: my $ua=new LWP::UserAgent;
1716: my $request=new HTTP::Request('GET',"$remoteurl");
1717: my $response=$ua->request($request,$transname);
1718: if ($response->is_error()) {
1719: unlink($transname);
1720: my $message=$response->status_line;
1721: &logthis("<font color=\"blue\">WARNING:"
1722: ." LWP get: $message: $filename</font>");
1723: return 'unavailable';
1724: } else {
1725: if ($remoteurl!~/\.meta$/) {
1726: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
1727: my $mresponse=$ua->request($mrequest,$filename.'.meta');
1728: if ($mresponse->is_error()) {
1729: unlink($filename.'.meta');
1730: &logthis(
1731: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
1732: }
1733: }
1734: rename($transname,$filename);
1735: return 'ok';
1736: }
1737: }
1738: }
1739: }
1740:
1741: # ------------------------------------------------ Get server side include body
1742: sub ssi_body {
1743: my ($filelink,%form)=@_;
1744: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
1745: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
1746: }
1747: my $output='';
1748: my $response;
1749: if ($filelink=~/^http\:/) {
1750: ($output,$response)=&externalssi($filelink);
1751: } else {
1752: ($output,$response)=&ssi($filelink,%form);
1753: }
1754: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
1755: $output=~s/^.*?\<body[^\>]*\>//si;
1756: $output=~s/\<\/body\s*\>.*?$//si;
1757: if (wantarray) {
1758: return ($output, $response);
1759: } else {
1760: return $output;
1761: }
1762: }
1763:
1764: # --------------------------------------------------------- Server Side Include
1765:
1766: sub absolute_url {
1767: my ($host_name) = @_;
1768: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
1769: if ($host_name eq '') {
1770: $host_name = $ENV{'SERVER_NAME'};
1771: }
1772: return $protocol.$host_name;
1773: }
1774:
1775: #
1776: # Server side include.
1777: # Parameters:
1778: # fn Possibly encrypted resource name/id.
1779: # form Hash that describes how the rendering should be done
1780: # and other things.
1781: # Returns:
1782: # Scalar context: The content of the response.
1783: # Array context: 2 element list of the content and the full response object.
1784: #
1785: sub ssi {
1786:
1787: my ($fn,%form)=@_;
1788: my $ua=new LWP::UserAgent;
1789: my $request;
1790:
1791: $form{'no_update_last_known'}=1;
1792: &Apache::lonenc::check_encrypt(\$fn);
1793: if (%form) {
1794: $request=new HTTP::Request('POST',&absolute_url().$fn);
1795: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys %form));
1796: } else {
1797: $request=new HTTP::Request('GET',&absolute_url().$fn);
1798: }
1799:
1800: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
1801: my $response=$ua->request($request);
1802:
1803: if (wantarray) {
1804: return ($response->content, $response);
1805: } else {
1806: return $response->content;
1807: }
1808: }
1809:
1810: sub externalssi {
1811: my ($url)=@_;
1812: my $ua=new LWP::UserAgent;
1813: my $request=new HTTP::Request('GET',$url);
1814: my $response=$ua->request($request);
1815: if (wantarray) {
1816: return ($response->content, $response);
1817: } else {
1818: return $response->content;
1819: }
1820: }
1821:
1822: # -------------------------------- Allow a /uploaded/ URI to be vouched for
1823:
1824: sub allowuploaded {
1825: my ($srcurl,$url)=@_;
1826: $url=&clutter(&declutter($url));
1827: my $dir=$url;
1828: $dir=~s/\/[^\/]+$//;
1829: my %httpref=();
1830: my $httpurl=&hreflocation('',$url);
1831: $httpref{'httpref.'.$httpurl}=$srcurl;
1832: &Apache::lonnet::appenv(\%httpref);
1833: }
1834:
1835: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
1836: # input: action, courseID, current domain, intended
1837: # path to file, source of file, instruction to parse file for objects,
1838: # ref to hash for embedded objects,
1839: # ref to hash for codebase of java objects.
1840: #
1841: # output: url to file (if action was uploaddoc),
1842: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
1843: #
1844: # Allows directory structure to be used within lonUsers/../userfiles/ for a
1845: # course.
1846: #
1847: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1848: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
1849: # course's home server.
1850: #
1851: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
1852: # be copied from $source (current location) to
1853: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1854: # and will then be copied to
1855: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
1856: # course's home server.
1857: #
1858: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1859: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
1860: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1861: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
1862: # in course's home server.
1863: #
1864:
1865: sub process_coursefile {
1866: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase)=@_;
1867: my $fetchresult;
1868: my $home=&homeserver($docuname,$docudom);
1869: if ($action eq 'propagate') {
1870: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1871: $home);
1872: } else {
1873: my $fpath = '';
1874: my $fname = $file;
1875: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
1876: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
1877: my $filepath = &build_filepath($fpath);
1878: if ($action eq 'copy') {
1879: if ($source eq '') {
1880: $fetchresult = 'no source file';
1881: return $fetchresult;
1882: } else {
1883: my $destination = $filepath.'/'.$fname;
1884: rename($source,$destination);
1885: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1886: $home);
1887: }
1888: } elsif ($action eq 'uploaddoc') {
1889: open(my $fh,'>'.$filepath.'/'.$fname);
1890: print $fh $env{'form.'.$source};
1891: close($fh);
1892: if ($parser eq 'parse') {
1893: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
1894: unless ($parse_result eq 'ok') {
1895: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
1896: }
1897: }
1898: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1899: $home);
1900: if ($fetchresult eq 'ok') {
1901: return '/uploaded/'.$fpath.'/'.$fname;
1902: } else {
1903: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1904: ' to host '.$home.': '.$fetchresult);
1905: return '/adm/notfound.html';
1906: }
1907: }
1908: }
1909: unless ( $fetchresult eq 'ok') {
1910: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1911: ' to host '.$home.': '.$fetchresult);
1912: }
1913: return $fetchresult;
1914: }
1915:
1916: sub build_filepath {
1917: my ($fpath) = @_;
1918: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
1919: unless ($fpath eq '') {
1920: my @parts=split('/',$fpath);
1921: foreach my $part (@parts) {
1922: $filepath.= '/'.$part;
1923: if ((-e $filepath)!=1) {
1924: mkdir($filepath,0777);
1925: }
1926: }
1927: }
1928: return $filepath;
1929: }
1930:
1931: sub store_edited_file {
1932: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
1933: my $file = $primary_url;
1934: $file =~ s#^/uploaded/$docudom/$docuname/##;
1935: my $fpath = '';
1936: my $fname = $file;
1937: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
1938: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
1939: my $filepath = &build_filepath($fpath);
1940: open(my $fh,'>'.$filepath.'/'.$fname);
1941: print $fh $content;
1942: close($fh);
1943: my $home=&homeserver($docuname,$docudom);
1944: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1945: $home);
1946: if ($$fetchresult eq 'ok') {
1947: return '/uploaded/'.$fpath.'/'.$fname;
1948: } else {
1949: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1950: ' to host '.$home.': '.$$fetchresult);
1951: return '/adm/notfound.html';
1952: }
1953: }
1954:
1955: sub clean_filename {
1956: my ($fname,$args)=@_;
1957: # Replace Windows backslashes by forward slashes
1958: $fname=~s/\\/\//g;
1959: if (!$args->{'keep_path'}) {
1960: # Get rid of everything but the actual filename
1961: $fname=~s/^.*\/([^\/]+)$/$1/;
1962: }
1963: # Replace spaces by underscores
1964: $fname=~s/\s+/\_/g;
1965: # Replace all other weird characters by nothing
1966: $fname=~s{[^/\w\.\-]}{}g;
1967: # Replace all .\d. sequences with _\d. so they no longer look like version
1968: # numbers
1969: $fname=~s/\.(\d+)(?=\.)/_$1/g;
1970: return $fname;
1971: }
1972:
1973: # --------------- Take an uploaded file and put it into the userfiles directory
1974: # input: $formname - the contents of the file are in $env{"form.$formname"}
1975: # the desired filenam is in $env{"form.$formname.filename"}
1976: # $coursedoc - if true up to the current course
1977: # if false
1978: # $subdir - directory in userfile to store the file into
1979: # $parser - instruction to parse file for objects ($parser = parse)
1980: # $allfiles - reference to hash for embedded objects
1981: # $codebase - reference to hash for codebase of java objects
1982: # $desuname - username for permanent storage of uploaded file
1983: # $dsetudom - domain for permanaent storage of uploaded file
1984: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
1985: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
1986: #
1987: # output: url of file in userspace, or error: <message>
1988: # or /adm/notfound.html if failure to upload occurse
1989:
1990:
1991: sub userfileupload {
1992: my ($formname,$coursedoc,$subdir,$parser,$allfiles,$codebase,$destuname,
1993: $destudom,$thumbwidth,$thumbheight)=@_;
1994: if (!defined($subdir)) { $subdir='unknown'; }
1995: my $fname=$env{'form.'.$formname.'.filename'};
1996: $fname=&clean_filename($fname);
1997: # See if there is anything left
1998: unless ($fname) { return 'error: no uploaded file'; }
1999: chop($env{'form.'.$formname});
2000: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) { #files uploaded to help request form are handled differently
2001: my $now = time;
2002: my $filepath = 'tmp/helprequests/'.$now;
2003: my @parts=split(/\//,$filepath);
2004: my $fullpath = $perlvar{'lonDaemons'};
2005: for (my $i=0;$i<@parts;$i++) {
2006: $fullpath .= '/'.$parts[$i];
2007: if ((-e $fullpath)!=1) {
2008: mkdir($fullpath,0777);
2009: }
2010: }
2011: open(my $fh,'>'.$fullpath.'/'.$fname);
2012: print $fh $env{'form.'.$formname};
2013: close($fh);
2014: return $fullpath.'/'.$fname;
2015: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) { #files uploaded to create course page are handled differently
2016: my $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
2017: '_'.$env{'user.domain'}.'/pending';
2018: my @parts=split(/\//,$filepath);
2019: my $fullpath = $perlvar{'lonDaemons'};
2020: for (my $i=0;$i<@parts;$i++) {
2021: $fullpath .= '/'.$parts[$i];
2022: if ((-e $fullpath)!=1) {
2023: mkdir($fullpath,0777);
2024: }
2025: }
2026: open(my $fh,'>'.$fullpath.'/'.$fname);
2027: print $fh $env{'form.'.$formname};
2028: close($fh);
2029: return $fullpath.'/'.$fname;
2030: }
2031:
2032: # Create the directory if not present
2033: $fname="$subdir/$fname";
2034: if ($coursedoc) {
2035: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2036: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2037: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
2038: return &finishuserfileupload($docuname,$docudom,
2039: $formname,$fname,$parser,$allfiles,
2040: $codebase,$thumbwidth,$thumbheight);
2041: } else {
2042: $fname=$env{'form.folder'}.'/'.$fname;
2043: return &process_coursefile('uploaddoc',$docuname,$docudom,
2044: $fname,$formname,$parser,
2045: $allfiles,$codebase);
2046: }
2047: } elsif (defined($destuname)) {
2048: my $docuname=$destuname;
2049: my $docudom=$destudom;
2050: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2051: $parser,$allfiles,$codebase,
2052: $thumbwidth,$thumbheight);
2053:
2054: } else {
2055: my $docuname=$env{'user.name'};
2056: my $docudom=$env{'user.domain'};
2057: if (exists($env{'form.group'})) {
2058: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2059: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2060: }
2061: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2062: $parser,$allfiles,$codebase,
2063: $thumbwidth,$thumbheight);
2064: }
2065: }
2066:
2067: sub finishuserfileupload {
2068: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
2069: $thumbwidth,$thumbheight) = @_;
2070: my $path=$docudom.'/'.$docuname.'/';
2071: my $filepath=$perlvar{'lonDocRoot'};
2072: my ($fnamepath,$file,$fetchthumb);
2073: $file=$fname;
2074: if ($fname=~m|/|) {
2075: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
2076: $path.=$fnamepath.'/';
2077: }
2078: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
2079: my $count;
2080: for ($count=4;$count<=$#parts;$count++) {
2081: $filepath.="/$parts[$count]";
2082: if ((-e $filepath)!=1) {
2083: mkdir($filepath,0777);
2084: }
2085: }
2086: # Save the file
2087: {
2088: if (!open(FH,'>'.$filepath.'/'.$file)) {
2089: &logthis('Failed to create '.$filepath.'/'.$file);
2090: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
2091: return '/adm/notfound.html';
2092: }
2093: if (!print FH ($env{'form.'.$formname})) {
2094: &logthis('Failed to write to '.$filepath.'/'.$file);
2095: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
2096: return '/adm/notfound.html';
2097: }
2098: close(FH);
2099: }
2100: if ($parser eq 'parse') {
2101: my $parse_result = &extract_embedded_items($filepath.'/'.$file,$allfiles,
2102: $codebase);
2103: unless ($parse_result eq 'ok') {
2104: &logthis('Failed to parse '.$filepath.$file.
2105: ' for embedded media: '.$parse_result);
2106: }
2107: }
2108: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
2109: my $input = $filepath.'/'.$file;
2110: my $output = $filepath.'/'.'tn-'.$file;
2111: my $thumbsize = $thumbwidth.'x'.$thumbheight;
2112: system("convert -sample $thumbsize $input $output");
2113: if (-e $filepath.'/'.'tn-'.$file) {
2114: $fetchthumb = 1;
2115: }
2116: }
2117:
2118: # Notify homeserver to grep it
2119: #
2120: my $docuhome=&homeserver($docuname,$docudom);
2121: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
2122: if ($fetchresult eq 'ok') {
2123: if ($fetchthumb) {
2124: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
2125: if ($thumbresult ne 'ok') {
2126: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
2127: $docuhome.': '.$thumbresult);
2128: }
2129: }
2130: #
2131: # Return the URL to it
2132: return '/uploaded/'.$path.$file;
2133: } else {
2134: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
2135: ': '.$fetchresult);
2136: return '/adm/notfound.html';
2137: }
2138: }
2139:
2140: sub extract_embedded_items {
2141: my ($fullpath,$allfiles,$codebase,$content) = @_;
2142: my @state = ();
2143: my %javafiles = (
2144: codebase => '',
2145: code => '',
2146: archive => ''
2147: );
2148: my %mediafiles = (
2149: src => '',
2150: movie => '',
2151: );
2152: my $p;
2153: if ($content) {
2154: $p = HTML::LCParser->new($content);
2155: } else {
2156: $p = HTML::LCParser->new($fullpath);
2157: }
2158: while (my $t=$p->get_token()) {
2159: if ($t->[0] eq 'S') {
2160: my ($tagname, $attr) = ($t->[1],$t->[2]);
2161: push(@state, $tagname);
2162: if (lc($tagname) eq 'allow') {
2163: &add_filetype($allfiles,$attr->{'src'},'src');
2164: }
2165: if (lc($tagname) eq 'img') {
2166: &add_filetype($allfiles,$attr->{'src'},'src');
2167: }
2168: if (lc($tagname) eq 'a') {
2169: &add_filetype($allfiles,$attr->{'href'},'href');
2170: }
2171: if (lc($tagname) eq 'script') {
2172: if ($attr->{'archive'} =~ /\.jar$/i) {
2173: &add_filetype($allfiles,$attr->{'archive'},'archive');
2174: } else {
2175: &add_filetype($allfiles,$attr->{'src'},'src');
2176: }
2177: }
2178: if (lc($tagname) eq 'link') {
2179: if (lc($attr->{'rel'}) eq 'stylesheet') {
2180: &add_filetype($allfiles,$attr->{'href'},'href');
2181: }
2182: }
2183: if (lc($tagname) eq 'object' ||
2184: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
2185: foreach my $item (keys(%javafiles)) {
2186: $javafiles{$item} = '';
2187: }
2188: }
2189: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
2190: my $name = lc($attr->{'name'});
2191: foreach my $item (keys(%javafiles)) {
2192: if ($name eq $item) {
2193: $javafiles{$item} = $attr->{'value'};
2194: last;
2195: }
2196: }
2197: foreach my $item (keys(%mediafiles)) {
2198: if ($name eq $item) {
2199: &add_filetype($allfiles, $attr->{'value'}, 'value');
2200: last;
2201: }
2202: }
2203: }
2204: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
2205: foreach my $item (keys(%javafiles)) {
2206: if ($attr->{$item}) {
2207: $javafiles{$item} = $attr->{$item};
2208: last;
2209: }
2210: }
2211: foreach my $item (keys(%mediafiles)) {
2212: if ($attr->{$item}) {
2213: &add_filetype($allfiles,$attr->{$item},$item);
2214: last;
2215: }
2216: }
2217: }
2218: } elsif ($t->[0] eq 'E') {
2219: my ($tagname) = ($t->[1]);
2220: if ($javafiles{'codebase'} ne '') {
2221: $javafiles{'codebase'} .= '/';
2222: }
2223: if (lc($tagname) eq 'applet' ||
2224: lc($tagname) eq 'object' ||
2225: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
2226: ) {
2227: foreach my $item (keys(%javafiles)) {
2228: if ($item ne 'codebase' && $javafiles{$item} ne '') {
2229: my $file=$javafiles{'codebase'}.$javafiles{$item};
2230: &add_filetype($allfiles,$file,$item);
2231: }
2232: }
2233: }
2234: pop @state;
2235: }
2236: }
2237: return 'ok';
2238: }
2239:
2240: sub add_filetype {
2241: my ($allfiles,$file,$type)=@_;
2242: if (exists($allfiles->{$file})) {
2243: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
2244: push(@{$allfiles->{$file}}, &escape($type));
2245: }
2246: } else {
2247: @{$allfiles->{$file}} = (&escape($type));
2248: }
2249: }
2250:
2251: sub removeuploadedurl {
2252: my ($url)=@_;
2253: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
2254: return &removeuserfile($uname,$udom,$fname);
2255: }
2256:
2257: sub removeuserfile {
2258: my ($docuname,$docudom,$fname)=@_;
2259: my $home=&homeserver($docuname,$docudom);
2260: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
2261: if ($result eq 'ok') {
2262: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
2263: my $metafile = $fname.'.meta';
2264: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
2265: my $url = "/uploaded/$docudom/$docuname/$fname";
2266: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2267: my $sqlresult =
2268: &update_portfolio_table($docuname,$docudom,$file,
2269: 'portfolio_metadata',$group,
2270: 'delete');
2271: }
2272: }
2273: return $result;
2274: }
2275:
2276: sub mkdiruserfile {
2277: my ($docuname,$docudom,$dir)=@_;
2278: my $home=&homeserver($docuname,$docudom);
2279: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
2280: }
2281:
2282: sub renameuserfile {
2283: my ($docuname,$docudom,$old,$new)=@_;
2284: my $home=&homeserver($docuname,$docudom);
2285: my $result = &reply("renameuserfile:$docudom:$docuname:".
2286: &escape("$old").':'.&escape("$new"),$home);
2287: if ($result eq 'ok') {
2288: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
2289: my $oldmeta = $old.'.meta';
2290: my $newmeta = $new.'.meta';
2291: my $metaresult =
2292: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
2293: my $url = "/uploaded/$docudom/$docuname/$old";
2294: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2295: my $sqlresult =
2296: &update_portfolio_table($docuname,$docudom,$file,
2297: 'portfolio_metadata',$group,
2298: 'delete');
2299: }
2300: }
2301: return $result;
2302: }
2303:
2304: # ------------------------------------------------------------------------- Log
2305:
2306: sub log {
2307: my ($dom,$nam,$hom,$what)=@_;
2308: return critical("log:$dom:$nam:$what",$hom);
2309: }
2310:
2311: # ------------------------------------------------------------------ Course Log
2312: #
2313: # This routine flushes several buffers of non-mission-critical nature
2314: #
2315:
2316: sub flushcourselogs {
2317: &logthis('Flushing log buffers');
2318: #
2319: # course logs
2320: # This is a log of all transactions in a course, which can be used
2321: # for data mining purposes
2322: #
2323: # It also collects the courseid database, which lists last transaction
2324: # times and course titles for all courseids
2325: #
2326: my %courseidbuffer=();
2327: foreach my $crsid (keys(%courselogs)) {
2328: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
2329: &escape($courselogs{$crsid}),
2330: $coursehombuf{$crsid}) eq 'ok') {
2331: delete $courselogs{$crsid};
2332: } else {
2333: &logthis('Failed to flush log buffer for '.$crsid);
2334: if (length($courselogs{$crsid})>40000) {
2335: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
2336: " exceeded maximum size, deleting.</font>");
2337: delete $courselogs{$crsid};
2338: }
2339: }
2340: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
2341: 'description' => $coursedescrbuf{$crsid},
2342: 'inst_code' => $courseinstcodebuf{$crsid},
2343: 'type' => $coursetypebuf{$crsid},
2344: 'owner' => $courseownerbuf{$crsid},
2345: };
2346: }
2347: #
2348: # Write course id database (reverse lookup) to homeserver of courses
2349: # Is used in pickcourse
2350: #
2351: foreach my $crs_home (keys(%courseidbuffer)) {
2352: my $response = &courseidput(&host_domain($crs_home),
2353: $courseidbuffer{$crs_home},
2354: $crs_home,'timeonly');
2355: }
2356: #
2357: # File accesses
2358: # Writes to the dynamic metadata of resources to get hit counts, etc.
2359: #
2360: foreach my $entry (keys(%accesshash)) {
2361: if ($entry =~ /___count$/) {
2362: my ($dom,$name);
2363: ($dom,$name,undef)=
2364: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
2365: if (! defined($dom) || $dom eq '' ||
2366: ! defined($name) || $name eq '') {
2367: my $cid = $env{'request.course.id'};
2368: $dom = $env{'request.'.$cid.'.domain'};
2369: $name = $env{'request.'.$cid.'.num'};
2370: }
2371: my $value = $accesshash{$entry};
2372: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
2373: my %temphash=($url => $value);
2374: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
2375: if ($result eq 'ok') {
2376: delete $accesshash{$entry};
2377: } elsif ($result eq 'unknown_cmd') {
2378: # Target server has old code running on it.
2379: my %temphash=($entry => $value);
2380: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2381: delete $accesshash{$entry};
2382: }
2383: }
2384: } else {
2385: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
2386: my %temphash=($entry => $accesshash{$entry});
2387: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2388: delete $accesshash{$entry};
2389: }
2390: }
2391: }
2392: #
2393: # Roles
2394: # Reverse lookup of user roles for course faculty/staff and co-authorship
2395: #
2396: foreach my $entry (keys(%userrolehash)) {
2397: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
2398: split(/\:/,$entry);
2399: if (&Apache::lonnet::put('nohist_userroles',
2400: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
2401: $rudom,$runame) eq 'ok') {
2402: delete $userrolehash{$entry};
2403: }
2404: }
2405: #
2406: # Reverse lookup of domain roles (dc, ad, li, sc, au)
2407: #
2408: my %domrolebuffer = ();
2409: foreach my $entry (keys %domainrolehash) {
2410: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
2411: if ($domrolebuffer{$rudom}) {
2412: $domrolebuffer{$rudom}.='&'.&escape($entry).
2413: '='.&escape($domainrolehash{$entry});
2414: } else {
2415: $domrolebuffer{$rudom}.=&escape($entry).
2416: '='.&escape($domainrolehash{$entry});
2417: }
2418: delete $domainrolehash{$entry};
2419: }
2420: foreach my $dom (keys(%domrolebuffer)) {
2421: my %servers = &get_servers($dom,'library');
2422: foreach my $tryserver (keys(%servers)) {
2423: unless (&reply('domroleput:'.$dom.':'.
2424: $domrolebuffer{$dom},$tryserver) eq 'ok') {
2425: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
2426: }
2427: }
2428: }
2429: $dumpcount++;
2430: }
2431:
2432: sub courselog {
2433: my $what=shift;
2434: $what=time.':'.$what;
2435: unless ($env{'request.course.id'}) { return ''; }
2436: $coursedombuf{$env{'request.course.id'}}=
2437: $env{'course.'.$env{'request.course.id'}.'.domain'};
2438: $coursenumbuf{$env{'request.course.id'}}=
2439: $env{'course.'.$env{'request.course.id'}.'.num'};
2440: $coursehombuf{$env{'request.course.id'}}=
2441: $env{'course.'.$env{'request.course.id'}.'.home'};
2442: $coursedescrbuf{$env{'request.course.id'}}=
2443: $env{'course.'.$env{'request.course.id'}.'.description'};
2444: $courseinstcodebuf{$env{'request.course.id'}}=
2445: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
2446: $courseownerbuf{$env{'request.course.id'}}=
2447: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
2448: $coursetypebuf{$env{'request.course.id'}}=
2449: $env{'course.'.$env{'request.course.id'}.'.type'};
2450: if (defined $courselogs{$env{'request.course.id'}}) {
2451: $courselogs{$env{'request.course.id'}}.='&'.$what;
2452: } else {
2453: $courselogs{$env{'request.course.id'}}.=$what;
2454: }
2455: if (length($courselogs{$env{'request.course.id'}})>4048) {
2456: &flushcourselogs();
2457: }
2458: }
2459:
2460: sub courseacclog {
2461: my $fnsymb=shift;
2462: unless ($env{'request.course.id'}) { return ''; }
2463: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
2464: if ($fnsymb=~/(problem|exam|quiz|assess|survey|form|task|page)$/) {
2465: $what.=':POST';
2466: # FIXME: Probably ought to escape things....
2467: foreach my $key (keys(%env)) {
2468: if ($key=~/^form\.(.*)/) {
2469: $what.=':'.$1.'='.$env{$key};
2470: }
2471: }
2472: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
2473: # FIXME: We should not be depending on a form parameter that someone
2474: # editing lonsearchcat.pm might change in the future.
2475: if ($env{'form.phase'} eq 'course_search') {
2476: $what.= ':POST';
2477: # FIXME: Probably ought to escape things....
2478: foreach my $element ('courseexp','crsfulltext','crsrelated',
2479: 'crsdiscuss') {
2480: $what.=':'.$element.'='.$env{'form.'.$element};
2481: }
2482: }
2483: }
2484: &courselog($what);
2485: }
2486:
2487: sub countacc {
2488: my $url=&declutter(shift);
2489: return if (! defined($url) || $url eq '');
2490: unless ($env{'request.course.id'}) { return ''; }
2491: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
2492: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
2493: $accesshash{$key}++;
2494: }
2495:
2496: sub linklog {
2497: my ($from,$to)=@_;
2498: $from=&declutter($from);
2499: $to=&declutter($to);
2500: $accesshash{$from.'___'.$to.'___comefrom'}=1;
2501: $accesshash{$to.'___'.$from.'___goto'}=1;
2502: }
2503:
2504: sub userrolelog {
2505: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
2506: if (($trole=~/^ca/) || ($trole=~/^aa/) ||
2507: ($trole=~/^in/) || ($trole=~/^cc/) ||
2508: ($trole=~/^ep/) || ($trole=~/^cr/) ||
2509: ($trole=~/^ta/)) {
2510: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2511: $userrolehash
2512: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2513: =$tend.':'.$tstart;
2514: }
2515: if (($env{'request.role'} =~ /dc\./) &&
2516: (($trole=~/^au/) || ($trole=~/^in/) ||
2517: ($trole=~/^cc/) || ($trole=~/^ep/) ||
2518: ($trole=~/^cr/) || ($trole=~/^ta/))) {
2519: $userrolehash
2520: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
2521: =$tend.':'.$tstart;
2522: }
2523: if (($trole=~/^dc/) || ($trole=~/^ad/) ||
2524: ($trole=~/^li/) || ($trole=~/^li/) ||
2525: ($trole=~/^au/) || ($trole=~/^dg/) ||
2526: ($trole=~/^sc/)) {
2527: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2528: $domainrolehash
2529: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2530: = $tend.':'.$tstart;
2531: }
2532: }
2533:
2534: sub courserolelog {
2535: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
2536: if (($trole eq 'cc') || ($trole eq 'in') ||
2537: ($trole eq 'ep') || ($trole eq 'ad') ||
2538: ($trole eq 'ta') || ($trole eq 'st') ||
2539: ($trole=~/^cr/) || ($trole eq 'gr')) {
2540: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
2541: my $cdom = $1;
2542: my $cnum = $2;
2543: my $sec = $3;
2544: my $namespace = 'rolelog';
2545: my %storehash = (
2546: role => $trole,
2547: start => $tstart,
2548: end => $tend,
2549: selfenroll => $selfenroll,
2550: context => $context,
2551: );
2552: if ($trole eq 'gr') {
2553: $namespace = 'groupslog';
2554: $storehash{'group'} = $sec;
2555: } else {
2556: $storehash{'section'} = $sec;
2557: }
2558: &instructor_log($namespace,\%storehash,$delflag,$username,$domain,$cnum,$cdom);
2559: }
2560: }
2561: return;
2562: }
2563:
2564: sub get_course_adv_roles {
2565: my ($cid,$codes) = @_;
2566: $cid=$env{'request.course.id'} unless (defined($cid));
2567: my %coursehash=&coursedescription($cid);
2568: my %nothide=();
2569: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2570: if ($user !~ /:/) {
2571: $nothide{join(':',split(/[\@]/,$user))}=1;
2572: } else {
2573: $nothide{$user}=1;
2574: }
2575: }
2576: my %returnhash=();
2577: my %dumphash=
2578: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
2579: my $now=time;
2580: foreach my $entry (keys %dumphash) {
2581: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
2582: if (($tstart) && ($tstart<0)) { next; }
2583: if (($tend) && ($tend<$now)) { next; }
2584: if (($tstart) && ($now<$tstart)) { next; }
2585: my ($role,$username,$domain,$section)=split(/\:/,$entry);
2586: if ($username eq '' || $domain eq '') { next; }
2587: if ((&privileged($username,$domain)) &&
2588: (!$nothide{$username.':'.$domain})) { next; }
2589: if ($role eq 'cr') { next; }
2590: if ($codes) {
2591: if ($section) { $role .= ':'.$section; }
2592: if ($returnhash{$role}) {
2593: $returnhash{$role}.=','.$username.':'.$domain;
2594: } else {
2595: $returnhash{$role}=$username.':'.$domain;
2596: }
2597: } else {
2598: my $key=&plaintext($role);
2599: if ($section) { $key.=' (Section '.$section.')'; }
2600: if ($returnhash{$key}) {
2601: $returnhash{$key}.=','.$username.':'.$domain;
2602: } else {
2603: $returnhash{$key}=$username.':'.$domain;
2604: }
2605: }
2606: }
2607: return %returnhash;
2608: }
2609:
2610: sub get_my_roles {
2611: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
2612: unless (defined($uname)) { $uname=$env{'user.name'}; }
2613: unless (defined($udom)) { $udom=$env{'user.domain'}; }
2614: my (%dumphash,%nothide);
2615: if ($context eq 'userroles') {
2616: %dumphash = &dump('roles',$udom,$uname);
2617: } else {
2618: %dumphash=
2619: &dump('nohist_userroles',$udom,$uname);
2620: if ($hidepriv) {
2621: my %coursehash=&coursedescription($udom.'_'.$uname);
2622: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2623: if ($user !~ /:/) {
2624: $nothide{join(':',split(/[\@]/,$user))} = 1;
2625: } else {
2626: $nothide{$user} = 1;
2627: }
2628: }
2629: }
2630: }
2631: my %returnhash=();
2632: my $now=time;
2633: foreach my $entry (keys(%dumphash)) {
2634: my ($role,$tend,$tstart);
2635: if ($context eq 'userroles') {
2636: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
2637: } else {
2638: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
2639: }
2640: if (($tstart) && ($tstart<0)) { next; }
2641: my $status = 'active';
2642: if (($tend) && ($tend<=$now)) {
2643: $status = 'previous';
2644: }
2645: if (($tstart) && ($now<$tstart)) {
2646: $status = 'future';
2647: }
2648: if (ref($types) eq 'ARRAY') {
2649: if (!grep(/^\Q$status\E$/,@{$types})) {
2650: next;
2651: }
2652: } else {
2653: if ($status ne 'active') {
2654: next;
2655: }
2656: }
2657: my ($rolecode,$username,$domain,$section,$area);
2658: if ($context eq 'userroles') {
2659: ($area,$rolecode) = split(/_/,$entry);
2660: (undef,$domain,$username,$section) = split(/\//,$area);
2661: } else {
2662: ($role,$username,$domain,$section) = split(/\:/,$entry);
2663: }
2664: if (ref($roledoms) eq 'ARRAY') {
2665: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
2666: next;
2667: }
2668: }
2669: if (ref($roles) eq 'ARRAY') {
2670: if (!grep(/^\Q$role\E$/,@{$roles})) {
2671: if ($role =~ /^cr\//) {
2672: if (!grep(/^cr$/,@{$roles})) {
2673: next;
2674: }
2675: } else {
2676: next;
2677: }
2678: }
2679: }
2680: if ($hidepriv) {
2681: if ((&privileged($username,$domain)) &&
2682: (!$nothide{$username.':'.$domain})) {
2683: next;
2684: }
2685: }
2686: if ($withsec) {
2687: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
2688: $tstart.':'.$tend;
2689: } else {
2690: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
2691: }
2692: }
2693: return %returnhash;
2694: }
2695:
2696: # ----------------------------------------------------- Frontpage Announcements
2697: #
2698: #
2699:
2700: sub postannounce {
2701: my ($server,$text)=@_;
2702: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
2703: unless ($text=~/\w/) { $text=''; }
2704: return &reply('setannounce:'.&escape($text),$server);
2705: }
2706:
2707: sub getannounce {
2708:
2709: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
2710: my $announcement='';
2711: while (my $line = <$fh>) { $announcement .= $line; }
2712: close($fh);
2713: if ($announcement=~/\w/) {
2714: return
2715: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
2716: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
2717: } else {
2718: return '';
2719: }
2720: } else {
2721: return '';
2722: }
2723: }
2724:
2725: # ---------------------------------------------------------- Course ID routines
2726: # Deal with domain's nohist_courseid.db files
2727: #
2728:
2729: sub courseidput {
2730: my ($domain,$storehash,$coursehome,$caller) = @_;
2731: my $outcome;
2732: if ($caller eq 'timeonly') {
2733: my $cids = '';
2734: foreach my $item (keys(%$storehash)) {
2735: $cids.=&escape($item).'&';
2736: }
2737: $cids=~s/\&$//;
2738: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
2739: $coursehome);
2740: } else {
2741: my $items = '';
2742: foreach my $item (keys(%$storehash)) {
2743: $items.= &escape($item).'='.
2744: &freeze_escape($$storehash{$item}).'&';
2745: }
2746: $items=~s/\&$//;
2747: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
2748: $coursehome);
2749: }
2750: if ($outcome eq 'unknown_cmd') {
2751: my $what;
2752: foreach my $cid (keys(%$storehash)) {
2753: $what .= &escape($cid).'=';
2754: foreach my $item ('description','inst_code','owner','type') {
2755: $what .= &escape($storehash->{$cid}{$item}).':';
2756: }
2757: $what =~ s/\:$/&/;
2758: }
2759: $what =~ s/\&$//;
2760: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
2761: } else {
2762: return $outcome;
2763: }
2764: }
2765:
2766: sub courseiddump {
2767: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
2768: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
2769: $selfenrollonly,$catfilter,$showhidden,$caller)=@_;
2770: my $as_hash = 1;
2771: my %returnhash;
2772: if (!$domfilter) { $domfilter=''; }
2773: my %libserv = &all_library();
2774: foreach my $tryserver (keys(%libserv)) {
2775: if ( ( $hostidflag == 1
2776: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
2777: || (!defined($hostidflag)) ) {
2778:
2779: if (($domfilter eq '') ||
2780: (&host_domain($tryserver) eq $domfilter)) {
2781: my $rep =
2782: &reply('courseiddump:'.&host_domain($tryserver).':'.
2783: $sincefilter.':'.&escape($descfilter).':'.
2784: &escape($instcodefilter).':'.&escape($ownerfilter).
2785: ':'.&escape($coursefilter).':'.&escape($typefilter).
2786: ':'.&escape($regexp_ok).':'.$as_hash.':'.
2787: &escape($selfenrollonly).':'.&escape($catfilter).':'.
2788: $showhidden.':'.$caller,$tryserver);
2789: my @pairs=split(/\&/,$rep);
2790: foreach my $item (@pairs) {
2791: my ($key,$value)=split(/\=/,$item,2);
2792: $key = &unescape($key);
2793: next if ($key =~ /^error: 2 /);
2794: my $result = &thaw_unescape($value);
2795: if (ref($result) eq 'HASH') {
2796: $returnhash{$key}=$result;
2797: } else {
2798: my @responses = split(/:/,$value);
2799: my @items = ('description','inst_code','owner','type');
2800: for (my $i=0; $i<@responses; $i++) {
2801: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
2802: }
2803: }
2804: }
2805: }
2806: }
2807: }
2808: return %returnhash;
2809: }
2810:
2811: # ---------------------------------------------------------- DC e-mail
2812:
2813: sub dcmailput {
2814: my ($domain,$msgid,$message,$server)=@_;
2815: my $status = &Apache::lonnet::critical(
2816: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
2817: &escape($message),$server);
2818: return $status;
2819: }
2820:
2821: sub dcmaildump {
2822: my ($dom,$startdate,$enddate,$senders) = @_;
2823: my %returnhash=();
2824:
2825: if (defined(&domain($dom,'primary'))) {
2826: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
2827: &escape($enddate).':';
2828: my @esc_senders=map { &escape($_)} @$senders;
2829: $cmd.=&escape(join('&',@esc_senders));
2830: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
2831: my ($key,$value) = split(/\=/,$line,2);
2832: if (($key) && ($value)) {
2833: $returnhash{&unescape($key)} = &unescape($value);
2834: }
2835: }
2836: }
2837: return %returnhash;
2838: }
2839: # ---------------------------------------------------------- Domain roles
2840:
2841: sub get_domain_roles {
2842: my ($dom,$roles,$startdate,$enddate)=@_;
2843: if (undef($startdate) || $startdate eq '') {
2844: $startdate = '.';
2845: }
2846: if (undef($enddate) || $enddate eq '') {
2847: $enddate = '.';
2848: }
2849: my $rolelist;
2850: if (ref($roles) eq 'ARRAY') {
2851: $rolelist = join(':',@{$roles});
2852: }
2853: my %personnel = ();
2854:
2855: my %servers = &get_servers($dom,'library');
2856: foreach my $tryserver (keys(%servers)) {
2857: %{$personnel{$tryserver}}=();
2858: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
2859: &escape($startdate).':'.
2860: &escape($enddate).':'.
2861: &escape($rolelist), $tryserver))) {
2862: my ($key,$value) = split(/\=/,$line,2);
2863: if (($key) && ($value)) {
2864: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
2865: }
2866: }
2867: }
2868: return %personnel;
2869: }
2870:
2871: # ----------------------------------------------------------- Check out an item
2872:
2873: sub get_first_access {
2874: my ($type,$argsymb)=@_;
2875: my ($symb,$courseid,$udom,$uname)=&whichuser();
2876: if ($argsymb) { $symb=$argsymb; }
2877: my ($map,$id,$res)=&decode_symb($symb);
2878: if ($type eq 'course') {
2879: $res='course';
2880: } elsif ($type eq 'map') {
2881: $res=&symbread($map);
2882: } else {
2883: $res=$symb;
2884: }
2885: my %times=&get('firstaccesstimes',["$courseid\0$res"],$udom,$uname);
2886: return $times{"$courseid\0$res"};
2887: }
2888:
2889: sub set_first_access {
2890: my ($type)=@_;
2891: my ($symb,$courseid,$udom,$uname)=&whichuser();
2892: my ($map,$id,$res)=&decode_symb($symb);
2893: if ($type eq 'course') {
2894: $res='course';
2895: } elsif ($type eq 'map') {
2896: $res=&symbread($map);
2897: } else {
2898: $res=$symb;
2899: }
2900: my $firstaccess=&get_first_access($type,$symb);
2901: if (!$firstaccess) {
2902: return &put('firstaccesstimes',{"$courseid\0$res"=>time},$udom,$uname);
2903: }
2904: return 'already_set';
2905: }
2906:
2907: sub checkout {
2908: my ($symb,$tuname,$tudom,$tcrsid)=@_;
2909: my $now=time;
2910: my $lonhost=$perlvar{'lonHostID'};
2911: my $infostr=&escape(
2912: 'CHECKOUTTOKEN&'.
2913: $tuname.'&'.
2914: $tudom.'&'.
2915: $tcrsid.'&'.
2916: $symb.'&'.
2917: $now.'&'.$ENV{'REMOTE_ADDR'});
2918: my $token=&reply('tmpput:'.$infostr,$lonhost);
2919: if ($token=~/^error\:/) {
2920: &logthis("<font color=\"blue\">WARNING: ".
2921: "Checkout tmpput failed ".$tudom.' - '.$tuname.' - '.$symb.
2922: "</font>");
2923: return '';
2924: }
2925:
2926: $token=~s/^(\d+)\_.*\_(\d+)$/$1\*$2\*$lonhost/;
2927: $token=~tr/a-z/A-Z/;
2928:
2929: my %infohash=('resource.0.outtoken' => $token,
2930: 'resource.0.checkouttime' => $now,
2931: 'resource.0.outremote' => $ENV{'REMOTE_ADDR'});
2932:
2933: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
2934: return '';
2935: } else {
2936: &logthis("<font color=\"blue\">WARNING: ".
2937: "Checkout cstore failed ".$tudom.' - '.$tuname.' - '.$symb.
2938: "</font>");
2939: }
2940:
2941: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
2942: &escape('Checkout '.$infostr.' - '.
2943: $token)) ne 'ok') {
2944: return '';
2945: } else {
2946: &logthis("<font color=\"blue\">WARNING: ".
2947: "Checkout log failed ".$tudom.' - '.$tuname.' - '.$symb.
2948: "</font>");
2949: }
2950: return $token;
2951: }
2952:
2953: # ------------------------------------------------------------ Check in an item
2954:
2955: sub checkin {
2956: my $token=shift;
2957: my $now=time;
2958: my ($ta,$tb,$lonhost)=split(/\*/,$token);
2959: $lonhost=~tr/A-Z/a-z/;
2960: my $dtoken=$ta.'_'.&hostname($lonhost).'_'.$tb;
2961: $dtoken=~s/\W/\_/g;
2962: my ($dummy,$tuname,$tudom,$tcrsid,$symb,$chtim,$rmaddr)=
2963: split(/\&/,&unescape(&reply('tmpget:'.$dtoken,$lonhost)));
2964:
2965: unless (($tuname) && ($tudom)) {
2966: &logthis('Check in '.$token.' ('.$dtoken.') failed');
2967: return '';
2968: }
2969:
2970: unless (&allowed('mgr',$tcrsid)) {
2971: &logthis('Check in '.$token.' ('.$dtoken.') unauthorized: '.
2972: $env{'user.name'}.' - '.$env{'user.domain'});
2973: return '';
2974: }
2975:
2976: my %infohash=('resource.0.intoken' => $token,
2977: 'resource.0.checkintime' => $now,
2978: 'resource.0.inremote' => $ENV{'REMOTE_ADDR'});
2979:
2980: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
2981: return '';
2982: }
2983:
2984: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
2985: &escape('Checkin - '.$token)) ne 'ok') {
2986: return '';
2987: }
2988:
2989: return ($symb,$tuname,$tudom,$tcrsid);
2990: }
2991:
2992: # --------------------------------------------- Set Expire Date for Spreadsheet
2993:
2994: sub expirespread {
2995: my ($uname,$udom,$stype,$usymb)=@_;
2996: my $cid=$env{'request.course.id'};
2997: if ($cid) {
2998: my $now=time;
2999: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
3000: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
3001: $env{'course.'.$cid.'.num'}.
3002: ':nohist_expirationdates:'.
3003: &escape($key).'='.$now,
3004: $env{'course.'.$cid.'.home'})
3005: }
3006: return 'ok';
3007: }
3008:
3009: # ----------------------------------------------------- Devalidate Spreadsheets
3010:
3011: sub devalidate {
3012: my ($symb,$uname,$udom)=@_;
3013: my $cid=$env{'request.course.id'};
3014: if ($cid) {
3015: # delete the stored spreadsheets for
3016: # - the student level sheet of this user in course's homespace
3017: # - the assessment level sheet for this resource
3018: # for this user in user's homespace
3019: # - current conditional state info
3020: my $key=$uname.':'.$udom.':';
3021: my $status=
3022: &del('nohist_calculatedsheets',
3023: [$key.'studentcalc:'],
3024: $env{'course.'.$cid.'.domain'},
3025: $env{'course.'.$cid.'.num'})
3026: .' '.
3027: &del('nohist_calculatedsheets_'.$cid,
3028: [$key.'assesscalc:'.$symb],$udom,$uname);
3029: unless ($status eq 'ok ok') {
3030: &logthis('Could not devalidate spreadsheet '.
3031: $uname.' at '.$udom.' for '.
3032: $symb.': '.$status);
3033: }
3034: &delenv('user.state.'.$cid);
3035: }
3036: }
3037:
3038: sub get_scalar {
3039: my ($string,$end) = @_;
3040: my $value;
3041: if ($$string =~ s/^([^&]*?)($end)/$2/) {
3042: $value = $1;
3043: } elsif ($$string =~ s/^([^&]*?)&//) {
3044: $value = $1;
3045: }
3046: return &unescape($value);
3047: }
3048:
3049: sub array2str {
3050: my (@array) = @_;
3051: my $result=&arrayref2str(\@array);
3052: $result=~s/^__ARRAY_REF__//;
3053: $result=~s/__END_ARRAY_REF__$//;
3054: return $result;
3055: }
3056:
3057: sub arrayref2str {
3058: my ($arrayref) = @_;
3059: my $result='__ARRAY_REF__';
3060: foreach my $elem (@$arrayref) {
3061: if(ref($elem) eq 'ARRAY') {
3062: $result.=&arrayref2str($elem).'&';
3063: } elsif(ref($elem) eq 'HASH') {
3064: $result.=&hashref2str($elem).'&';
3065: } elsif(ref($elem)) {
3066: #print("Got a ref of ".(ref($elem))." skipping.");
3067: } else {
3068: $result.=&escape($elem).'&';
3069: }
3070: }
3071: $result=~s/\&$//;
3072: $result .= '__END_ARRAY_REF__';
3073: return $result;
3074: }
3075:
3076: sub hash2str {
3077: my (%hash) = @_;
3078: my $result=&hashref2str(\%hash);
3079: $result=~s/^__HASH_REF__//;
3080: $result=~s/__END_HASH_REF__$//;
3081: return $result;
3082: }
3083:
3084: sub hashref2str {
3085: my ($hashref)=@_;
3086: my $result='__HASH_REF__';
3087: foreach my $key (sort(keys(%$hashref))) {
3088: if (ref($key) eq 'ARRAY') {
3089: $result.=&arrayref2str($key).'=';
3090: } elsif (ref($key) eq 'HASH') {
3091: $result.=&hashref2str($key).'=';
3092: } elsif (ref($key)) {
3093: $result.='=';
3094: #print("Got a ref of ".(ref($key))." skipping.");
3095: } else {
3096: if ($key) {$result.=&escape($key).'=';} else { last; }
3097: }
3098:
3099: if(ref($hashref->{$key}) eq 'ARRAY') {
3100: $result.=&arrayref2str($hashref->{$key}).'&';
3101: } elsif(ref($hashref->{$key}) eq 'HASH') {
3102: $result.=&hashref2str($hashref->{$key}).'&';
3103: } elsif(ref($hashref->{$key})) {
3104: $result.='&';
3105: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
3106: } else {
3107: $result.=&escape($hashref->{$key}).'&';
3108: }
3109: }
3110: $result=~s/\&$//;
3111: $result .= '__END_HASH_REF__';
3112: return $result;
3113: }
3114:
3115: sub str2hash {
3116: my ($string)=@_;
3117: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
3118: return %$hash;
3119: }
3120:
3121: sub str2hashref {
3122: my ($string) = @_;
3123:
3124: my %hash;
3125:
3126: if($string !~ /^__HASH_REF__/) {
3127: if (! ($string eq '' || !defined($string))) {
3128: $hash{'error'}='Not hash reference';
3129: }
3130: return (\%hash, $string);
3131: }
3132:
3133: $string =~ s/^__HASH_REF__//;
3134:
3135: while($string !~ /^__END_HASH_REF__/) {
3136: #key
3137: my $key='';
3138: if($string =~ /^__HASH_REF__/) {
3139: ($key, $string)=&str2hashref($string);
3140: if(defined($key->{'error'})) {
3141: $hash{'error'}='Bad data';
3142: return (\%hash, $string);
3143: }
3144: } elsif($string =~ /^__ARRAY_REF__/) {
3145: ($key, $string)=&str2arrayref($string);
3146: if($key->[0] eq 'Array reference error') {
3147: $hash{'error'}='Bad data';
3148: return (\%hash, $string);
3149: }
3150: } else {
3151: $string =~ s/^(.*?)=//;
3152: $key=&unescape($1);
3153: }
3154: $string =~ s/^=//;
3155:
3156: #value
3157: my $value='';
3158: if($string =~ /^__HASH_REF__/) {
3159: ($value, $string)=&str2hashref($string);
3160: if(defined($value->{'error'})) {
3161: $hash{'error'}='Bad data';
3162: return (\%hash, $string);
3163: }
3164: } elsif($string =~ /^__ARRAY_REF__/) {
3165: ($value, $string)=&str2arrayref($string);
3166: if($value->[0] eq 'Array reference error') {
3167: $hash{'error'}='Bad data';
3168: return (\%hash, $string);
3169: }
3170: } else {
3171: $value=&get_scalar(\$string,'__END_HASH_REF__');
3172: }
3173: $string =~ s/^&//;
3174:
3175: $hash{$key}=$value;
3176: }
3177:
3178: $string =~ s/^__END_HASH_REF__//;
3179:
3180: return (\%hash, $string);
3181: }
3182:
3183: sub str2array {
3184: my ($string)=@_;
3185: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
3186: return @$array;
3187: }
3188:
3189: sub str2arrayref {
3190: my ($string) = @_;
3191: my @array;
3192:
3193: if($string !~ /^__ARRAY_REF__/) {
3194: if (! ($string eq '' || !defined($string))) {
3195: $array[0]='Array reference error';
3196: }
3197: return (\@array, $string);
3198: }
3199:
3200: $string =~ s/^__ARRAY_REF__//;
3201:
3202: while($string !~ /^__END_ARRAY_REF__/) {
3203: my $value='';
3204: if($string =~ /^__HASH_REF__/) {
3205: ($value, $string)=&str2hashref($string);
3206: if(defined($value->{'error'})) {
3207: $array[0] ='Array reference error';
3208: return (\@array, $string);
3209: }
3210: } elsif($string =~ /^__ARRAY_REF__/) {
3211: ($value, $string)=&str2arrayref($string);
3212: if($value->[0] eq 'Array reference error') {
3213: $array[0] ='Array reference error';
3214: return (\@array, $string);
3215: }
3216: } else {
3217: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
3218: }
3219: $string =~ s/^&//;
3220:
3221: push(@array, $value);
3222: }
3223:
3224: $string =~ s/^__END_ARRAY_REF__//;
3225:
3226: return (\@array, $string);
3227: }
3228:
3229: # -------------------------------------------------------------------Temp Store
3230:
3231: sub tmpreset {
3232: my ($symb,$namespace,$domain,$stuname) = @_;
3233: if (!$symb) {
3234: $symb=&symbread();
3235: if (!$symb) { $symb= $env{'request.url'}; }
3236: }
3237: $symb=escape($symb);
3238:
3239: if (!$namespace) { $namespace=$env{'request.state'}; }
3240: $namespace=~s/\//\_/g;
3241: $namespace=~s/\W//g;
3242:
3243: if (!$domain) { $domain=$env{'user.domain'}; }
3244: if (!$stuname) { $stuname=$env{'user.name'}; }
3245: if ($domain eq 'public' && $stuname eq 'public') {
3246: $stuname=$ENV{'REMOTE_ADDR'};
3247: }
3248: my $path=$perlvar{'lonDaemons'}.'/tmp';
3249: my %hash;
3250: if (tie(%hash,'GDBM_File',
3251: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3252: &GDBM_WRCREAT(),0640)) {
3253: foreach my $key (keys %hash) {
3254: if ($key=~ /:$symb/) {
3255: delete($hash{$key});
3256: }
3257: }
3258: }
3259: }
3260:
3261: sub tmpstore {
3262: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3263:
3264: if (!$symb) {
3265: $symb=&symbread();
3266: if (!$symb) { $symb= $env{'request.url'}; }
3267: }
3268: $symb=escape($symb);
3269:
3270: if (!$namespace) {
3271: # I don't think we would ever want to store this for a course.
3272: # it seems this will only be used if we don't have a course.
3273: #$namespace=$env{'request.course.id'};
3274: #if (!$namespace) {
3275: $namespace=$env{'request.state'};
3276: #}
3277: }
3278: $namespace=~s/\//\_/g;
3279: $namespace=~s/\W//g;
3280: if (!$domain) { $domain=$env{'user.domain'}; }
3281: if (!$stuname) { $stuname=$env{'user.name'}; }
3282: if ($domain eq 'public' && $stuname eq 'public') {
3283: $stuname=$ENV{'REMOTE_ADDR'};
3284: }
3285: my $now=time;
3286: my %hash;
3287: my $path=$perlvar{'lonDaemons'}.'/tmp';
3288: if (tie(%hash,'GDBM_File',
3289: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3290: &GDBM_WRCREAT(),0640)) {
3291: $hash{"version:$symb"}++;
3292: my $version=$hash{"version:$symb"};
3293: my $allkeys='';
3294: foreach my $key (keys(%$storehash)) {
3295: $allkeys.=$key.':';
3296: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
3297: }
3298: $hash{"$version:$symb:timestamp"}=$now;
3299: $allkeys.='timestamp';
3300: $hash{"$version:keys:$symb"}=$allkeys;
3301: if (untie(%hash)) {
3302: return 'ok';
3303: } else {
3304: return "error:$!";
3305: }
3306: } else {
3307: return "error:$!";
3308: }
3309: }
3310:
3311: # -----------------------------------------------------------------Temp Restore
3312:
3313: sub tmprestore {
3314: my ($symb,$namespace,$domain,$stuname) = @_;
3315:
3316: if (!$symb) {
3317: $symb=&symbread();
3318: if (!$symb) { $symb= $env{'request.url'}; }
3319: }
3320: $symb=escape($symb);
3321:
3322: if (!$namespace) { $namespace=$env{'request.state'}; }
3323:
3324: if (!$domain) { $domain=$env{'user.domain'}; }
3325: if (!$stuname) { $stuname=$env{'user.name'}; }
3326: if ($domain eq 'public' && $stuname eq 'public') {
3327: $stuname=$ENV{'REMOTE_ADDR'};
3328: }
3329: my %returnhash;
3330: $namespace=~s/\//\_/g;
3331: $namespace=~s/\W//g;
3332: my %hash;
3333: my $path=$perlvar{'lonDaemons'}.'/tmp';
3334: if (tie(%hash,'GDBM_File',
3335: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3336: &GDBM_READER(),0640)) {
3337: my $version=$hash{"version:$symb"};
3338: $returnhash{'version'}=$version;
3339: my $scope;
3340: for ($scope=1;$scope<=$version;$scope++) {
3341: my $vkeys=$hash{"$scope:keys:$symb"};
3342: my @keys=split(/:/,$vkeys);
3343: my $key;
3344: $returnhash{"$scope:keys"}=$vkeys;
3345: foreach $key (@keys) {
3346: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3347: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3348: }
3349: }
3350: if (!(untie(%hash))) {
3351: return "error:$!";
3352: }
3353: } else {
3354: return "error:$!";
3355: }
3356: return %returnhash;
3357: }
3358:
3359: # ----------------------------------------------------------------------- Store
3360:
3361: sub store {
3362: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3363: my $home='';
3364:
3365: if ($stuname) { $home=&homeserver($stuname,$domain); }
3366:
3367: $symb=&symbclean($symb);
3368: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3369:
3370: if (!$domain) { $domain=$env{'user.domain'}; }
3371: if (!$stuname) { $stuname=$env{'user.name'}; }
3372:
3373: &devalidate($symb,$stuname,$domain);
3374:
3375: $symb=escape($symb);
3376: if (!$namespace) {
3377: unless ($namespace=$env{'request.course.id'}) {
3378: return '';
3379: }
3380: }
3381: if (!$home) { $home=$env{'user.home'}; }
3382:
3383: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3384: $$storehash{'host'}=$perlvar{'lonHostID'};
3385:
3386: my $namevalue='';
3387: foreach my $key (keys(%$storehash)) {
3388: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3389: }
3390: $namevalue=~s/\&$//;
3391: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
3392: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3393: }
3394:
3395: # -------------------------------------------------------------- Critical Store
3396:
3397: sub cstore {
3398: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3399: my $home='';
3400:
3401: if ($stuname) { $home=&homeserver($stuname,$domain); }
3402:
3403: $symb=&symbclean($symb);
3404: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3405:
3406: if (!$domain) { $domain=$env{'user.domain'}; }
3407: if (!$stuname) { $stuname=$env{'user.name'}; }
3408:
3409: &devalidate($symb,$stuname,$domain);
3410:
3411: $symb=escape($symb);
3412: if (!$namespace) {
3413: unless ($namespace=$env{'request.course.id'}) {
3414: return '';
3415: }
3416: }
3417: if (!$home) { $home=$env{'user.home'}; }
3418:
3419: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3420: $$storehash{'host'}=$perlvar{'lonHostID'};
3421:
3422: my $namevalue='';
3423: foreach my $key (keys(%$storehash)) {
3424: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3425: }
3426: $namevalue=~s/\&$//;
3427: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
3428: return critical
3429: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3430: }
3431:
3432: # --------------------------------------------------------------------- Restore
3433:
3434: sub restore {
3435: my ($symb,$namespace,$domain,$stuname) = @_;
3436: my $home='';
3437:
3438: if ($stuname) { $home=&homeserver($stuname,$domain); }
3439:
3440: if (!$symb) {
3441: unless ($symb=escape(&symbread())) { return ''; }
3442: } else {
3443: $symb=&escape(&symbclean($symb));
3444: }
3445: if (!$namespace) {
3446: unless ($namespace=$env{'request.course.id'}) {
3447: return '';
3448: }
3449: }
3450: if (!$domain) { $domain=$env{'user.domain'}; }
3451: if (!$stuname) { $stuname=$env{'user.name'}; }
3452: if (!$home) { $home=$env{'user.home'}; }
3453: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
3454:
3455: my %returnhash=();
3456: foreach my $line (split(/\&/,$answer)) {
3457: my ($name,$value)=split(/\=/,$line);
3458: $returnhash{&unescape($name)}=&thaw_unescape($value);
3459: }
3460: my $version;
3461: for ($version=1;$version<=$returnhash{'version'};$version++) {
3462: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
3463: $returnhash{$item}=$returnhash{$version.':'.$item};
3464: }
3465: }
3466: return %returnhash;
3467: }
3468:
3469: # ---------------------------------------------------------- Course Description
3470:
3471: sub coursedescription {
3472: my ($courseid,$args)=@_;
3473: $courseid=~s/^\///;
3474: $courseid=~s/\_/\//g;
3475: my ($cdomain,$cnum)=split(/\//,$courseid);
3476: my $chome=&homeserver($cnum,$cdomain);
3477: my $normalid=$cdomain.'_'.$cnum;
3478: # need to always cache even if we get errors otherwise we keep
3479: # trying and trying and trying to get the course description.
3480: my %envhash=();
3481: my %returnhash=();
3482:
3483: my $expiretime=600;
3484: if ($env{'request.course.id'} eq $normalid) {
3485: $expiretime=120;
3486: }
3487:
3488: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
3489: if (!$args->{'freshen_cache'}
3490: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
3491: foreach my $key (keys(%env)) {
3492: next if ($key !~ /^\Q$prefix\E(.*)/);
3493: my ($setting) = $1;
3494: $returnhash{$setting} = $env{$key};
3495: }
3496: return %returnhash;
3497: }
3498:
3499: # get the data agin
3500: if (!$args->{'one_time'}) {
3501: $envhash{'course.'.$normalid.'.last_cache'}=time;
3502: }
3503:
3504: if ($chome ne 'no_host') {
3505: %returnhash=&dump('environment',$cdomain,$cnum);
3506: if (!exists($returnhash{'con_lost'})) {
3507: $returnhash{'home'}= $chome;
3508: $returnhash{'domain'} = $cdomain;
3509: $returnhash{'num'} = $cnum;
3510: if (!defined($returnhash{'type'})) {
3511: $returnhash{'type'} = 'Course';
3512: }
3513: while (my ($name,$value) = each %returnhash) {
3514: $envhash{'course.'.$normalid.'.'.$name}=$value;
3515: }
3516: $returnhash{'url'}=&clutter($returnhash{'url'});
3517: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
3518: $env{'user.name'}.'_'.$cdomain.'_'.$cnum;
3519: $envhash{'course.'.$normalid.'.home'}=$chome;
3520: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
3521: $envhash{'course.'.$normalid.'.num'}=$cnum;
3522: }
3523: }
3524: if (!$args->{'one_time'}) {
3525: &appenv(\%envhash);
3526: }
3527: return %returnhash;
3528: }
3529:
3530: # -------------------------------------------------See if a user is privileged
3531:
3532: sub privileged {
3533: my ($username,$domain)=@_;
3534: my $rolesdump=&reply("dump:$domain:$username:roles",
3535: &homeserver($username,$domain));
3536: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return 0; }
3537: my $now=time;
3538: if ($rolesdump ne '') {
3539: foreach my $entry (split(/&/,$rolesdump)) {
3540: if ($entry!~/^rolesdef_/) {
3541: my ($area,$role)=split(/=/,$entry);
3542: $area=~s/\_\w\w$//;
3543: my ($trole,$tend,$tstart)=split(/_/,$role);
3544: if (($trole eq 'dc') || ($trole eq 'su')) {
3545: my $active=1;
3546: if ($tend) {
3547: if ($tend<$now) { $active=0; }
3548: }
3549: if ($tstart) {
3550: if ($tstart>$now) { $active=0; }
3551: }
3552: if ($active) { return 1; }
3553: }
3554: }
3555: }
3556: }
3557: return 0;
3558: }
3559:
3560: # -------------------------------------------------------- Get user privileges
3561:
3562: sub rolesinit {
3563: my ($domain,$username,$authhost)=@_;
3564: my $rolesdump=reply("dump:$domain:$username:roles",$authhost);
3565: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return ''; }
3566: my %allroles=();
3567: my %allgroups=();
3568: my $now=time;
3569: my %userroles = ('user.login.time' => $now);
3570: my $group_privs;
3571:
3572: if ($rolesdump ne '') {
3573: foreach my $entry (split(/&/,$rolesdump)) {
3574: if ($entry!~/^rolesdef_/) {
3575: my ($area,$role)=split(/=/,$entry);
3576: $area=~s/\_\w\w$//;
3577: my ($trole,$tend,$tstart,$group_privs);
3578: if ($role=~/^cr/) {
3579: if ($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
3580: ($trole,my $trest)=($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|);
3581: ($tend,$tstart)=split('_',$trest);
3582: } else {
3583: $trole=$role;
3584: }
3585: } elsif ($role =~ m|^gr/|) {
3586: ($trole,$tend,$tstart) = split(/_/,$role);
3587: ($trole,$group_privs) = split(/\//,$trole);
3588: $group_privs = &unescape($group_privs);
3589: } else {
3590: ($trole,$tend,$tstart)=split(/_/,$role);
3591: }
3592: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
3593: $username);
3594: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
3595: if (($tend!=0) && ($tend<$now)) { $trole=''; }
3596: if (($tstart!=0) && ($tstart>$now)) { $trole=''; }
3597: if (($area ne '') && ($trole ne '')) {
3598: my $spec=$trole.'.'.$area;
3599: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
3600: if ($trole =~ /^cr\//) {
3601: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
3602: } elsif ($trole eq 'gr') {
3603: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
3604: } else {
3605: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
3606: }
3607: }
3608: }
3609: }
3610: my ($author,$adv) = &set_userprivs(\%userroles,\%allroles,\%allgroups);
3611: $userroles{'user.adv'} = $adv;
3612: $userroles{'user.author'} = $author;
3613: $env{'user.adv'}=$adv;
3614: }
3615: return \%userroles;
3616: }
3617:
3618: sub set_arearole {
3619: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
3620: # log the associated role with the area
3621: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
3622: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
3623: }
3624:
3625: sub custom_roleprivs {
3626: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
3627: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
3628: my $homsvr=homeserver($rauthor,$rdomain);
3629: if (&hostname($homsvr) ne '') {
3630: my ($rdummy,$roledef)=
3631: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
3632: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
3633: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
3634: if (defined($syspriv)) {
3635: $$allroles{'cm./'}.=':'.$syspriv;
3636: $$allroles{$spec.'./'}.=':'.$syspriv;
3637: }
3638: if ($tdomain ne '') {
3639: if (defined($dompriv)) {
3640: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
3641: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
3642: }
3643: if (($trest ne '') && (defined($coursepriv))) {
3644: $$allroles{'cm.'.$area}.=':'.$coursepriv;
3645: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
3646: }
3647: }
3648: }
3649: }
3650: }
3651:
3652: sub group_roleprivs {
3653: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
3654: my $access = 1;
3655: my $now = time;
3656: if (($tend!=0) && ($tend<$now)) { $access = 0; }
3657: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
3658: if ($access) {
3659: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
3660: $$allgroups{$course}{$group} .=':'.$group_privs;
3661: }
3662: }
3663:
3664: sub standard_roleprivs {
3665: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
3666: if (defined($pr{$trole.':s'})) {
3667: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
3668: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
3669: }
3670: if ($tdomain ne '') {
3671: if (defined($pr{$trole.':d'})) {
3672: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
3673: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
3674: }
3675: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
3676: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
3677: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
3678: }
3679: }
3680: }
3681:
3682: sub set_userprivs {
3683: my ($userroles,$allroles,$allgroups) = @_;
3684: my $author=0;
3685: my $adv=0;
3686: my %grouproles = ();
3687: if (keys(%{$allgroups}) > 0) {
3688: foreach my $role (keys %{$allroles}) {
3689: my ($trole,$area,$sec,$extendedarea);
3690: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
3691: $trole = $1;
3692: $area = $2;
3693: $sec = $3;
3694: $extendedarea = $area.$sec;
3695: if (exists($$allgroups{$area})) {
3696: foreach my $group (keys(%{$$allgroups{$area}})) {
3697: my $spec = $trole.'.'.$extendedarea;
3698: $grouproles{$spec.'.'.$area.'/'.$group} =
3699: $$allgroups{$area}{$group};
3700: }
3701: }
3702: }
3703: }
3704: }
3705: foreach my $group (keys(%grouproles)) {
3706: $$allroles{$group} = $grouproles{$group};
3707: }
3708: foreach my $role (keys(%{$allroles})) {
3709: my %thesepriv;
3710: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
3711: foreach my $item (split(/:/,$$allroles{$role})) {
3712: if ($item ne '') {
3713: my ($privilege,$restrictions)=split(/&/,$item);
3714: if ($restrictions eq '') {
3715: $thesepriv{$privilege}='F';
3716: } elsif ($thesepriv{$privilege} ne 'F') {
3717: $thesepriv{$privilege}.=$restrictions;
3718: }
3719: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
3720: }
3721: }
3722: my $thesestr='';
3723: foreach my $priv (keys(%thesepriv)) {
3724: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
3725: }
3726: $userroles->{'user.priv.'.$role} = $thesestr;
3727: }
3728: return ($author,$adv);
3729: }
3730:
3731: # --------------------------------------------------------------- get interface
3732:
3733: sub get {
3734: my ($namespace,$storearr,$udomain,$uname)=@_;
3735: my $items='';
3736: foreach my $item (@$storearr) {
3737: $items.=&escape($item).'&';
3738: }
3739: $items=~s/\&$//;
3740: if (!$udomain) { $udomain=$env{'user.domain'}; }
3741: if (!$uname) { $uname=$env{'user.name'}; }
3742: my $uhome=&homeserver($uname,$udomain);
3743:
3744: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
3745: my @pairs=split(/\&/,$rep);
3746: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
3747: return @pairs;
3748: }
3749: my %returnhash=();
3750: my $i=0;
3751: foreach my $item (@$storearr) {
3752: $returnhash{$item}=&thaw_unescape($pairs[$i]);
3753: $i++;
3754: }
3755: return %returnhash;
3756: }
3757:
3758: # --------------------------------------------------------------- del interface
3759:
3760: sub del {
3761: my ($namespace,$storearr,$udomain,$uname)=@_;
3762: my $items='';
3763: foreach my $item (@$storearr) {
3764: $items.=&escape($item).'&';
3765: }
3766: $items=~s/\&$//;
3767: if (!$udomain) { $udomain=$env{'user.domain'}; }
3768: if (!$uname) { $uname=$env{'user.name'}; }
3769: my $uhome=&homeserver($uname,$udomain);
3770:
3771: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
3772: }
3773:
3774: # -------------------------------------------------------------- dump interface
3775:
3776: sub dump {
3777: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
3778: if (!$udomain) { $udomain=$env{'user.domain'}; }
3779: if (!$uname) { $uname=$env{'user.name'}; }
3780: my $uhome=&homeserver($uname,$udomain);
3781: if ($regexp) {
3782: $regexp=&escape($regexp);
3783: } else {
3784: $regexp='.';
3785: }
3786: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
3787: my @pairs=split(/\&/,$rep);
3788: my %returnhash=();
3789: foreach my $item (@pairs) {
3790: my ($key,$value)=split(/=/,$item,2);
3791: $key = &unescape($key);
3792: next if ($key =~ /^error: 2 /);
3793: $returnhash{$key}=&thaw_unescape($value);
3794: }
3795: return %returnhash;
3796: }
3797:
3798: # --------------------------------------------------------- dumpstore interface
3799:
3800: sub dumpstore {
3801: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
3802: if (!$udomain) { $udomain=$env{'user.domain'}; }
3803: if (!$uname) { $uname=$env{'user.name'}; }
3804: my $uhome=&homeserver($uname,$udomain);
3805: if ($regexp) {
3806: $regexp=&escape($regexp);
3807: } else {
3808: $regexp='.';
3809: }
3810: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
3811: my @pairs=split(/\&/,$rep);
3812: my %returnhash=();
3813: foreach my $item (@pairs) {
3814: my ($key,$value)=split(/=/,$item,2);
3815: next if ($key =~ /^error: 2 /);
3816: $returnhash{$key}=&thaw_unescape($value);
3817: }
3818: return %returnhash;
3819: }
3820:
3821: # -------------------------------------------------------------- keys interface
3822:
3823: sub getkeys {
3824: my ($namespace,$udomain,$uname)=@_;
3825: if (!$udomain) { $udomain=$env{'user.domain'}; }
3826: if (!$uname) { $uname=$env{'user.name'}; }
3827: my $uhome=&homeserver($uname,$udomain);
3828: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
3829: my @keyarray=();
3830: foreach my $key (split(/\&/,$rep)) {
3831: next if ($key =~ /^error: 2 /);
3832: push(@keyarray,&unescape($key));
3833: }
3834: return @keyarray;
3835: }
3836:
3837: # --------------------------------------------------------------- currentdump
3838: sub currentdump {
3839: my ($courseid,$sdom,$sname)=@_;
3840: $courseid = $env{'request.course.id'} if (! defined($courseid));
3841: $sdom = $env{'user.domain'} if (! defined($sdom));
3842: $sname = $env{'user.name'} if (! defined($sname));
3843: my $uhome = &homeserver($sname,$sdom);
3844: my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
3845: return if ($rep =~ /^(error:|no_such_host)/);
3846: #
3847: my %returnhash=();
3848: #
3849: if ($rep eq "unknown_cmd") {
3850: # an old lond will not know currentdump
3851: # Do a dump and make it look like a currentdump
3852: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
3853: return if ($tmp[0] =~ /^(error:|no_such_host)/);
3854: my %hash = @tmp;
3855: @tmp=();
3856: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
3857: } else {
3858: my @pairs=split(/\&/,$rep);
3859: foreach my $pair (@pairs) {
3860: my ($key,$value)=split(/=/,$pair,2);
3861: my ($symb,$param) = split(/:/,$key);
3862: $returnhash{&unescape($symb)}->{&unescape($param)} =
3863: &thaw_unescape($value);
3864: }
3865: }
3866: return %returnhash;
3867: }
3868:
3869: sub convert_dump_to_currentdump{
3870: my %hash = %{shift()};
3871: my %returnhash;
3872: # Code ripped from lond, essentially. The only difference
3873: # here is the unescaping done by lonnet::dump(). Conceivably
3874: # we might run in to problems with parameter names =~ /^v\./
3875: while (my ($key,$value) = each(%hash)) {
3876: my ($v,$symb,$param) = split(/:/,$key);
3877: $symb = &unescape($symb);
3878: $param = &unescape($param);
3879: next if ($v eq 'version' || $symb eq 'keys');
3880: next if (exists($returnhash{$symb}) &&
3881: exists($returnhash{$symb}->{$param}) &&
3882: $returnhash{$symb}->{'v.'.$param} > $v);
3883: $returnhash{$symb}->{$param}=$value;
3884: $returnhash{$symb}->{'v.'.$param}=$v;
3885: }
3886: #
3887: # Remove all of the keys in the hashes which keep track of
3888: # the version of the parameter.
3889: while (my ($symb,$param_hash) = each(%returnhash)) {
3890: # use a foreach because we are going to delete from the hash.
3891: foreach my $key (keys(%$param_hash)) {
3892: delete($param_hash->{$key}) if ($key =~ /^v\./);
3893: }
3894: }
3895: return \%returnhash;
3896: }
3897:
3898: # ------------------------------------------------------ critical inc interface
3899:
3900: sub cinc {
3901: return &inc(@_,'critical');
3902: }
3903:
3904: # --------------------------------------------------------------- inc interface
3905:
3906: sub inc {
3907: my ($namespace,$store,$udomain,$uname,$critical) = @_;
3908: if (!$udomain) { $udomain=$env{'user.domain'}; }
3909: if (!$uname) { $uname=$env{'user.name'}; }
3910: my $uhome=&homeserver($uname,$udomain);
3911: my $items='';
3912: if (! ref($store)) {
3913: # got a single value, so use that instead
3914: $items = &escape($store).'=&';
3915: } elsif (ref($store) eq 'SCALAR') {
3916: $items = &escape($$store).'=&';
3917: } elsif (ref($store) eq 'ARRAY') {
3918: $items = join('=&',map {&escape($_);} @{$store});
3919: } elsif (ref($store) eq 'HASH') {
3920: while (my($key,$value) = each(%{$store})) {
3921: $items.= &escape($key).'='.&escape($value).'&';
3922: }
3923: }
3924: $items=~s/\&$//;
3925: if ($critical) {
3926: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
3927: } else {
3928: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
3929: }
3930: }
3931:
3932: # --------------------------------------------------------------- put interface
3933:
3934: sub put {
3935: my ($namespace,$storehash,$udomain,$uname)=@_;
3936: if (!$udomain) { $udomain=$env{'user.domain'}; }
3937: if (!$uname) { $uname=$env{'user.name'}; }
3938: my $uhome=&homeserver($uname,$udomain);
3939: my $items='';
3940: foreach my $item (keys(%$storehash)) {
3941: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
3942: }
3943: $items=~s/\&$//;
3944: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
3945: }
3946:
3947: # ------------------------------------------------------------ newput interface
3948:
3949: sub newput {
3950: my ($namespace,$storehash,$udomain,$uname)=@_;
3951: if (!$udomain) { $udomain=$env{'user.domain'}; }
3952: if (!$uname) { $uname=$env{'user.name'}; }
3953: my $uhome=&homeserver($uname,$udomain);
3954: my $items='';
3955: foreach my $key (keys(%$storehash)) {
3956: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3957: }
3958: $items=~s/\&$//;
3959: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
3960: }
3961:
3962: # --------------------------------------------------------- putstore interface
3963:
3964: sub putstore {
3965: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
3966: if (!$udomain) { $udomain=$env{'user.domain'}; }
3967: if (!$uname) { $uname=$env{'user.name'}; }
3968: my $uhome=&homeserver($uname,$udomain);
3969: my $items='';
3970: foreach my $key (keys(%$storehash)) {
3971: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
3972: }
3973: $items=~s/\&$//;
3974: my $esc_symb=&escape($symb);
3975: my $esc_v=&escape($version);
3976: my $reply =
3977: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
3978: $uhome);
3979: if ($reply eq 'unknown_cmd') {
3980: # gfall back to way things use to be done
3981: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
3982: $uname);
3983: }
3984: return $reply;
3985: }
3986:
3987: sub old_putstore {
3988: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
3989: if (!$udomain) { $udomain=$env{'user.domain'}; }
3990: if (!$uname) { $uname=$env{'user.name'}; }
3991: my $uhome=&homeserver($uname,$udomain);
3992: my %newstorehash;
3993: foreach my $item (keys(%$storehash)) {
3994: my $key = $version.':'.&escape($symb).':'.$item;
3995: $newstorehash{$key} = $storehash->{$item};
3996: }
3997: my $items='';
3998: my %allitems = ();
3999: foreach my $item (keys(%newstorehash)) {
4000: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
4001: my $key = $1.':keys:'.$2;
4002: $allitems{$key} .= $3.':';
4003: }
4004: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
4005: }
4006: foreach my $item (keys(%allitems)) {
4007: $allitems{$item} =~ s/\:$//;
4008: $items.= $item.'='.$allitems{$item}.'&';
4009: }
4010: $items=~s/\&$//;
4011: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
4012: }
4013:
4014: # ------------------------------------------------------ critical put interface
4015:
4016: sub cput {
4017: my ($namespace,$storehash,$udomain,$uname)=@_;
4018: if (!$udomain) { $udomain=$env{'user.domain'}; }
4019: if (!$uname) { $uname=$env{'user.name'}; }
4020: my $uhome=&homeserver($uname,$udomain);
4021: my $items='';
4022: foreach my $item (keys(%$storehash)) {
4023: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4024: }
4025: $items=~s/\&$//;
4026: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
4027: }
4028:
4029: # -------------------------------------------------------------- eget interface
4030:
4031: sub eget {
4032: my ($namespace,$storearr,$udomain,$uname)=@_;
4033: my $items='';
4034: foreach my $item (@$storearr) {
4035: $items.=&escape($item).'&';
4036: }
4037: $items=~s/\&$//;
4038: if (!$udomain) { $udomain=$env{'user.domain'}; }
4039: if (!$uname) { $uname=$env{'user.name'}; }
4040: my $uhome=&homeserver($uname,$udomain);
4041: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
4042: my @pairs=split(/\&/,$rep);
4043: my %returnhash=();
4044: my $i=0;
4045: foreach my $item (@$storearr) {
4046: $returnhash{$item}=&thaw_unescape($pairs[$i]);
4047: $i++;
4048: }
4049: return %returnhash;
4050: }
4051:
4052: # ------------------------------------------------------------ tmpput interface
4053: sub tmpput {
4054: my ($storehash,$server,$context)=@_;
4055: my $items='';
4056: foreach my $item (keys(%$storehash)) {
4057: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4058: }
4059: $items=~s/\&$//;
4060: if (defined($context)) {
4061: $items .= ':'.&escape($context);
4062: }
4063: return &reply("tmpput:$items",$server);
4064: }
4065:
4066: # ------------------------------------------------------------ tmpget interface
4067: sub tmpget {
4068: my ($token,$server)=@_;
4069: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
4070: my $rep=&reply("tmpget:$token",$server);
4071: my %returnhash;
4072: foreach my $item (split(/\&/,$rep)) {
4073: my ($key,$value)=split(/=/,$item);
4074: next if ($key =~ /^error: 2 /);
4075: $returnhash{&unescape($key)}=&thaw_unescape($value);
4076: }
4077: return %returnhash;
4078: }
4079:
4080: # ------------------------------------------------------------ tmpget interface
4081: sub tmpdel {
4082: my ($token,$server)=@_;
4083: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
4084: return &reply("tmpdel:$token",$server);
4085: }
4086:
4087: # -------------------------------------------------- portfolio access checking
4088:
4089: sub portfolio_access {
4090: my ($requrl) = @_;
4091: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
4092: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
4093: if ($result) {
4094: my %setters;
4095: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4096: my ($startblock,$endblock) =
4097: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
4098: if ($startblock && $endblock) {
4099: return 'B';
4100: }
4101: } else {
4102: my ($startblock,$endblock) =
4103: &Apache::loncommon::blockcheck(\%setters,'port');
4104: if ($startblock && $endblock) {
4105: return 'B';
4106: }
4107: }
4108: }
4109: if ($result eq 'ok') {
4110: return 'F';
4111: } elsif ($result =~ /^[^:]+:guest_/) {
4112: return 'A';
4113: }
4114: return '';
4115: }
4116:
4117: sub get_portfolio_access {
4118: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
4119:
4120: if (!ref($access_hash)) {
4121: my $current_perms = &get_portfile_permissions($udom,$unum);
4122: my %access_controls = &get_access_controls($current_perms,$group,
4123: $file_name);
4124: $access_hash = $access_controls{$file_name};
4125: }
4126:
4127: my ($public,$guest,@domains,@users,@courses,@groups);
4128: my $now = time;
4129: if (ref($access_hash) eq 'HASH') {
4130: foreach my $key (keys(%{$access_hash})) {
4131: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
4132: if ($start > $now) {
4133: next;
4134: }
4135: if ($end && $end<$now) {
4136: next;
4137: }
4138: if ($scope eq 'public') {
4139: $public = $key;
4140: last;
4141: } elsif ($scope eq 'guest') {
4142: $guest = $key;
4143: } elsif ($scope eq 'domains') {
4144: push(@domains,$key);
4145: } elsif ($scope eq 'users') {
4146: push(@users,$key);
4147: } elsif ($scope eq 'course') {
4148: push(@courses,$key);
4149: } elsif ($scope eq 'group') {
4150: push(@groups,$key);
4151: }
4152: }
4153: if ($public) {
4154: return 'ok';
4155: }
4156: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4157: if ($guest) {
4158: return $guest;
4159: }
4160: } else {
4161: if (@domains > 0) {
4162: foreach my $domkey (@domains) {
4163: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
4164: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
4165: return 'ok';
4166: }
4167: }
4168: }
4169: }
4170: if (@users > 0) {
4171: foreach my $userkey (@users) {
4172: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
4173: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
4174: if (ref($item) eq 'HASH') {
4175: if (($item->{'uname'} eq $env{'user.name'}) &&
4176: ($item->{'udom'} eq $env{'user.domain'})) {
4177: return 'ok';
4178: }
4179: }
4180: }
4181: }
4182: }
4183: }
4184: my %roleshash;
4185: my @courses_and_groups = @courses;
4186: push(@courses_and_groups,@groups);
4187: if (@courses_and_groups > 0) {
4188: my (%allgroups,%allroles);
4189: my ($start,$end,$role,$sec,$group);
4190: foreach my $envkey (%env) {
4191: if ($envkey =~ m-^user\.role\.(gr|cc|in|ta|ep|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
4192: my $cid = $2.'_'.$3;
4193: if ($1 eq 'gr') {
4194: $group = $4;
4195: $allgroups{$cid}{$group} = $env{$envkey};
4196: } else {
4197: if ($4 eq '') {
4198: $sec = 'none';
4199: } else {
4200: $sec = $4;
4201: }
4202: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4203: }
4204: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
4205: my $cid = $2.'_'.$3;
4206: if ($4 eq '') {
4207: $sec = 'none';
4208: } else {
4209: $sec = $4;
4210: }
4211: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4212: }
4213: }
4214: if (keys(%allroles) == 0) {
4215: return;
4216: }
4217: foreach my $key (@courses_and_groups) {
4218: my %content = %{$$access_hash{$key}};
4219: my $cnum = $content{'number'};
4220: my $cdom = $content{'domain'};
4221: my $cid = $cdom.'_'.$cnum;
4222: if (!exists($allroles{$cid})) {
4223: next;
4224: }
4225: foreach my $role_id (keys(%{$content{'roles'}})) {
4226: my @sections = @{$content{'roles'}{$role_id}{'section'}};
4227: my @groups = @{$content{'roles'}{$role_id}{'group'}};
4228: my @status = @{$content{'roles'}{$role_id}{'access'}};
4229: my @roles = @{$content{'roles'}{$role_id}{'role'}};
4230: foreach my $role (keys(%{$allroles{$cid}})) {
4231: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
4232: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
4233: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
4234: if (grep/^all$/,@sections) {
4235: return 'ok';
4236: } else {
4237: if (grep/^$sec$/,@sections) {
4238: return 'ok';
4239: }
4240: }
4241: }
4242: }
4243: if (keys(%{$allgroups{$cid}}) == 0) {
4244: if (grep/^none$/,@groups) {
4245: return 'ok';
4246: }
4247: } else {
4248: if (grep/^all$/,@groups) {
4249: return 'ok';
4250: }
4251: foreach my $group (keys(%{$allgroups{$cid}})) {
4252: if (grep/^$group$/,@groups) {
4253: return 'ok';
4254: }
4255: }
4256: }
4257: }
4258: }
4259: }
4260: }
4261: }
4262: if ($guest) {
4263: return $guest;
4264: }
4265: }
4266: }
4267: return;
4268: }
4269:
4270: sub course_group_datechecker {
4271: my ($dates,$now,$status) = @_;
4272: my ($start,$end) = split(/\./,$dates);
4273: if (!$start && !$end) {
4274: return 'ok';
4275: }
4276: if (grep/^active$/,@{$status}) {
4277: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
4278: return 'ok';
4279: }
4280: }
4281: if (grep/^previous$/,@{$status}) {
4282: if ($end > $now ) {
4283: return 'ok';
4284: }
4285: }
4286: if (grep/^future$/,@{$status}) {
4287: if ($start > $now) {
4288: return 'ok';
4289: }
4290: }
4291: return;
4292: }
4293:
4294: sub parse_portfolio_url {
4295: my ($url) = @_;
4296:
4297: my ($type,$udom,$unum,$group,$file_name);
4298:
4299: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
4300: $type = 1;
4301: $udom = $1;
4302: $unum = $2;
4303: $file_name = $3;
4304: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
4305: $type = 2;
4306: $udom = $1;
4307: $unum = $2;
4308: $group = $3;
4309: $file_name = $3.'/'.$4;
4310: }
4311: if (wantarray) {
4312: return ($type,$udom,$unum,$file_name,$group);
4313: }
4314: return $type;
4315: }
4316:
4317: sub is_portfolio_url {
4318: my ($url) = @_;
4319: return scalar(&parse_portfolio_url($url));
4320: }
4321:
4322: sub is_portfolio_file {
4323: my ($file) = @_;
4324: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
4325: return 1;
4326: }
4327: return;
4328: }
4329:
4330:
4331: # ---------------------------------------------- Custom access rule evaluation
4332:
4333: sub customaccess {
4334: my ($priv,$uri)=@_;
4335: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
4336: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
4337: $udom = &LONCAPA::clean_domain($udom);
4338: $ucrs = &LONCAPA::clean_username($ucrs);
4339: my $access=0;
4340: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
4341: my ($effect,$realm,$role,$type)=split(/\:/,$right);
4342: if ($type eq 'user') {
4343: foreach my $scope (split(/\s*\,\s*/,$realm)) {
4344: my ($tdom,$tuname)=split(m{/},$scope);
4345: if ($tdom) {
4346: if ($tdom ne $env{'user.domain'}) { next; }
4347: }
4348: if ($tuname) {
4349: if ($tuname ne $env{'user.name'}) { next; }
4350: }
4351: $access=($effect eq 'allow');
4352: last;
4353: }
4354: } else {
4355: if ($role) {
4356: if ($role ne $urole) { next; }
4357: }
4358: foreach my $scope (split(/\s*\,\s*/,$realm)) {
4359: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
4360: if ($tdom) {
4361: if ($tdom ne $udom) { next; }
4362: }
4363: if ($tcrs) {
4364: if ($tcrs ne $ucrs) { next; }
4365: }
4366: if ($tsec) {
4367: if ($tsec ne $usec) { next; }
4368: }
4369: $access=($effect eq 'allow');
4370: last;
4371: }
4372: if ($realm eq '' && $role eq '') {
4373: $access=($effect eq 'allow');
4374: }
4375: }
4376: }
4377: return $access;
4378: }
4379:
4380: # ------------------------------------------------- Check for a user privilege
4381:
4382: sub allowed {
4383: my ($priv,$uri,$symb,$role)=@_;
4384: my $ver_orguri=$uri;
4385: $uri=&deversion($uri);
4386: my $orguri=$uri;
4387: $uri=&declutter($uri);
4388:
4389: if ($priv eq 'evb') {
4390: # Evade communication block restrictions for specified role in a course
4391: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
4392: return $1;
4393: } else {
4394: return;
4395: }
4396: }
4397:
4398: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
4399: # Free bre access to adm and meta resources
4400: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
4401: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
4402: && ($priv eq 'bre')) {
4403: return 'F';
4404: }
4405:
4406: # Free bre access to user's own portfolio contents
4407: my ($space,$domain,$name,@dir)=split('/',$uri);
4408: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
4409: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
4410: my %setters;
4411: my ($startblock,$endblock) =
4412: &Apache::loncommon::blockcheck(\%setters,'port');
4413: if ($startblock && $endblock) {
4414: return 'B';
4415: } else {
4416: return 'F';
4417: }
4418: }
4419:
4420: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
4421: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
4422: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
4423: if (exists($env{'request.course.id'})) {
4424: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4425: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4426: if (($domain eq $cdom) && ($name eq $cnum)) {
4427: my $courseprivid=$env{'request.course.id'};
4428: $courseprivid=~s/\_/\//;
4429: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
4430: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
4431: return $1;
4432: } else {
4433: if ($env{'request.course.sec'}) {
4434: $courseprivid.='/'.$env{'request.course.sec'};
4435: }
4436: if ($env{'user.priv.'.$env{'request.role'}.'./'.
4437: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
4438: return $2;
4439: }
4440: }
4441: }
4442: }
4443: }
4444:
4445: # Free bre to public access
4446:
4447: if ($priv eq 'bre') {
4448: my $copyright=&metadata($uri,'copyright');
4449: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
4450: return 'F';
4451: }
4452: if ($copyright eq 'priv') {
4453: $uri=~/([^\/]+)\/([^\/]+)\//;
4454: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
4455: return '';
4456: }
4457: }
4458: if ($copyright eq 'domain') {
4459: $uri=~/([^\/]+)\/([^\/]+)\//;
4460: unless (($env{'user.domain'} eq $1) ||
4461: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
4462: return '';
4463: }
4464: }
4465: if ($env{'request.role'}=~ /li\.\//) {
4466: # Library role, so allow browsing of resources in this domain.
4467: return 'F';
4468: }
4469: if ($copyright eq 'custom') {
4470: unless (&customaccess($priv,$uri)) { return ''; }
4471: }
4472: }
4473: # Domain coordinator is trying to create a course
4474: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
4475: # uri is the requested domain in this case.
4476: # comparison to 'request.role.domain' shows if the user has selected
4477: # a role of dc for the domain in question.
4478: return 'F' if ($uri eq $env{'request.role.domain'});
4479: }
4480:
4481: my $thisallowed='';
4482: my $statecond=0;
4483: my $courseprivid='';
4484:
4485: # Course
4486:
4487: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
4488: $thisallowed.=$1;
4489: }
4490:
4491: # Domain
4492:
4493: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
4494: =~/\Q$priv\E\&([^\:]*)/) {
4495: $thisallowed.=$1;
4496: }
4497:
4498: # Course: uri itself is a course
4499: my $courseuri=$uri;
4500: $courseuri=~s/\_(\d)/\/$1/;
4501: $courseuri=~s/^([^\/])/\/$1/;
4502:
4503: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
4504: =~/\Q$priv\E\&([^\:]*)/) {
4505: $thisallowed.=$1;
4506: }
4507:
4508: # URI is an uploaded document for this course, default permissions don't matter
4509: # not allowing 'edit' access (editupload) to uploaded course docs
4510: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
4511: $thisallowed='';
4512: my ($match)=&is_on_map($uri);
4513: if ($match) {
4514: if ($env{'user.priv.'.$env{'request.role'}.'./'}
4515: =~/\Q$priv\E\&([^\:]*)/) {
4516: $thisallowed.=$1;
4517: }
4518: } else {
4519: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
4520: if ($refuri) {
4521: if ($refuri =~ m|^/adm/|) {
4522: $thisallowed='F';
4523: } else {
4524: $refuri=&declutter($refuri);
4525: my ($match) = &is_on_map($refuri);
4526: if ($match) {
4527: $thisallowed='F';
4528: }
4529: }
4530: }
4531: }
4532: }
4533:
4534: if ($priv eq 'bre'
4535: && $thisallowed ne 'F'
4536: && $thisallowed ne '2'
4537: && &is_portfolio_url($uri)) {
4538: $thisallowed = &portfolio_access($uri);
4539: }
4540:
4541: # Full access at system, domain or course-wide level? Exit.
4542: if ($thisallowed=~/F/) {
4543: return 'F';
4544: }
4545:
4546: # If this is generating or modifying users, exit with special codes
4547:
4548: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
4549: if (($priv eq 'cca') || ($priv eq 'caa')) {
4550: my ($audom,$auname)=split('/',$uri);
4551: # no author name given, so this just checks on the general right to make a co-author in this domain
4552: unless ($auname) { return $thisallowed; }
4553: # an author name is given, so we are about to actually make a co-author for a certain account
4554: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
4555: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
4556: ($audom ne $env{'request.role.domain'}))) { return ''; }
4557: }
4558: return $thisallowed;
4559: }
4560: #
4561: # Gathered so far: system, domain and course wide privileges
4562: #
4563: # Course: See if uri or referer is an individual resource that is part of
4564: # the course
4565:
4566: if ($env{'request.course.id'}) {
4567:
4568: $courseprivid=$env{'request.course.id'};
4569: if ($env{'request.course.sec'}) {
4570: $courseprivid.='/'.$env{'request.course.sec'};
4571: }
4572: $courseprivid=~s/\_/\//;
4573: my $checkreferer=1;
4574: my ($match,$cond)=&is_on_map($uri);
4575: if ($match) {
4576: $statecond=$cond;
4577: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
4578: =~/\Q$priv\E\&([^\:]*)/) {
4579: $thisallowed.=$1;
4580: $checkreferer=0;
4581: }
4582: }
4583:
4584: if ($checkreferer) {
4585: my $refuri=$env{'httpref.'.$orguri};
4586: unless ($refuri) {
4587: foreach my $key (keys(%env)) {
4588: if ($key=~/^httpref\..*\*/) {
4589: my $pattern=$key;
4590: $pattern=~s/^httpref\.\/res\///;
4591: $pattern=~s/\*/\[\^\/\]\+/g;
4592: $pattern=~s/\//\\\//g;
4593: if ($orguri=~/$pattern/) {
4594: $refuri=$env{$key};
4595: }
4596: }
4597: }
4598: }
4599:
4600: if ($refuri) {
4601: $refuri=&declutter($refuri);
4602: my ($match,$cond)=&is_on_map($refuri);
4603: if ($match) {
4604: my $refstatecond=$cond;
4605: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
4606: =~/\Q$priv\E\&([^\:]*)/) {
4607: $thisallowed.=$1;
4608: $uri=$refuri;
4609: $statecond=$refstatecond;
4610: }
4611: }
4612: }
4613: }
4614: }
4615:
4616: #
4617: # Gathered now: all privileges that could apply, and condition number
4618: #
4619: #
4620: # Full or no access?
4621: #
4622:
4623: if ($thisallowed=~/F/) {
4624: return 'F';
4625: }
4626:
4627: unless ($thisallowed) {
4628: return '';
4629: }
4630:
4631: # Restrictions exist, deal with them
4632: #
4633: # C:according to course preferences
4634: # R:according to resource settings
4635: # L:unless locked
4636: # X:according to user session state
4637: #
4638:
4639: # Possibly locked functionality, check all courses
4640: # Locks might take effect only after 10 minutes cache expiration for other
4641: # courses, and 2 minutes for current course
4642:
4643: my $envkey;
4644: if ($thisallowed=~/L/) {
4645: foreach $envkey (keys %env) {
4646: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
4647: my $courseid=$2;
4648: my $roleid=$1.'.'.$2;
4649: $courseid=~s/^\///;
4650: my $expiretime=600;
4651: if ($env{'request.role'} eq $roleid) {
4652: $expiretime=120;
4653: }
4654: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
4655: my $prefix='course.'.$cdom.'_'.$cnum.'.';
4656: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
4657: &coursedescription($courseid,{'freshen_cache' => 1});
4658: }
4659: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
4660: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
4661: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
4662: &log($env{'user.domain'},$env{'user.name'},
4663: $env{'user.home'},
4664: 'Locked by res: '.$priv.' for '.$uri.' due to '.
4665: $cdom.'/'.$cnum.'/'.$csec.' expire '.
4666: $env{$prefix.'priv.'.$priv.'.lock.expire'});
4667: return '';
4668: }
4669: }
4670: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
4671: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
4672: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
4673: &log($env{'user.domain'},$env{'user.name'},
4674: $env{'user.home'},
4675: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
4676: $cdom.'/'.$cnum.'/'.$csec.' expire '.
4677: $env{$prefix.'priv.'.$priv.'.lock.expire'});
4678: return '';
4679: }
4680: }
4681: }
4682: }
4683: }
4684:
4685: #
4686: # Rest of the restrictions depend on selected course
4687: #
4688:
4689: unless ($env{'request.course.id'}) {
4690: if ($thisallowed eq 'A') {
4691: return 'A';
4692: } elsif ($thisallowed eq 'B') {
4693: return 'B';
4694: } else {
4695: return '1';
4696: }
4697: }
4698:
4699: #
4700: # Now user is definitely in a course
4701: #
4702:
4703:
4704: # Course preferences
4705:
4706: if ($thisallowed=~/C/) {
4707: my $rolecode=(split(/\./,$env{'request.role'}))[0];
4708: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
4709: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
4710: =~/\Q$rolecode\E/) {
4711: if ($priv ne 'pch') {
4712: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
4713: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
4714: $env{'request.course.id'});
4715: }
4716: return '';
4717: }
4718:
4719: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
4720: =~/\Q$unamedom\E/) {
4721: if ($priv ne 'pch') {
4722: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
4723: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
4724: $env{'request.course.id'});
4725: }
4726: return '';
4727: }
4728: }
4729:
4730: # Resource preferences
4731:
4732: if ($thisallowed=~/R/) {
4733: my $rolecode=(split(/\./,$env{'request.role'}))[0];
4734: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
4735: if ($priv ne 'pch') {
4736: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
4737: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
4738: }
4739: return '';
4740: }
4741: }
4742:
4743: # Restricted by state or randomout?
4744:
4745: if ($thisallowed=~/X/) {
4746: if ($env{'acc.randomout'}) {
4747: if (!$symb) { $symb=&symbread($uri,1); }
4748: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
4749: return '';
4750: }
4751: }
4752: if (&condval($statecond)) {
4753: return '2';
4754: } else {
4755: return '';
4756: }
4757: }
4758:
4759: if ($thisallowed eq 'A') {
4760: return 'A';
4761: } elsif ($thisallowed eq 'B') {
4762: return 'B';
4763: }
4764: return 'F';
4765: }
4766:
4767: sub split_uri_for_cond {
4768: my $uri=&deversion(&declutter(shift));
4769: my @uriparts=split(/\//,$uri);
4770: my $filename=pop(@uriparts);
4771: my $pathname=join('/',@uriparts);
4772: return ($pathname,$filename);
4773: }
4774: # --------------------------------------------------- Is a resource on the map?
4775:
4776: sub is_on_map {
4777: my ($pathname,$filename) = &split_uri_for_cond(shift);
4778: #Trying to find the conditional for the file
4779: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
4780: /\&\Q$filename\E\:([\d\|]+)\&/);
4781: if ($match) {
4782: return (1,$1);
4783: } else {
4784: return (0,0);
4785: }
4786: }
4787:
4788: # --------------------------------------------------------- Get symb from alias
4789:
4790: sub get_symb_from_alias {
4791: my $symb=shift;
4792: my ($map,$resid,$url)=&decode_symb($symb);
4793: # Already is a symb
4794: if ($url) { return $symb; }
4795: # Must be an alias
4796: my $aliassymb='';
4797: my %bighash;
4798: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
4799: &GDBM_READER(),0640)) {
4800: my $rid=$bighash{'mapalias_'.$symb};
4801: if ($rid) {
4802: my ($mapid,$resid)=split(/\./,$rid);
4803: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
4804: $resid,$bighash{'src_'.$rid});
4805: }
4806: untie %bighash;
4807: }
4808: return $aliassymb;
4809: }
4810:
4811: # ----------------------------------------------------------------- Define Role
4812:
4813: sub definerole {
4814: if (allowed('mcr','/')) {
4815: my ($rolename,$sysrole,$domrole,$courole)=@_;
4816: foreach my $role (split(':',$sysrole)) {
4817: my ($crole,$cqual)=split(/\&/,$role);
4818: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
4819: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
4820: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
4821: return "refused:s:$crole&$cqual";
4822: }
4823: }
4824: }
4825: foreach my $role (split(':',$domrole)) {
4826: my ($crole,$cqual)=split(/\&/,$role);
4827: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
4828: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
4829: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
4830: return "refused:d:$crole&$cqual";
4831: }
4832: }
4833: }
4834: foreach my $role (split(':',$courole)) {
4835: my ($crole,$cqual)=split(/\&/,$role);
4836: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
4837: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
4838: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
4839: return "refused:c:$crole&$cqual";
4840: }
4841: }
4842: }
4843: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
4844: "$env{'user.domain'}:$env{'user.name'}:".
4845: "rolesdef_$rolename=".
4846: escape($sysrole.'_'.$domrole.'_'.$courole);
4847: return reply($command,$env{'user.home'});
4848: } else {
4849: return 'refused';
4850: }
4851: }
4852:
4853: # ---------------- Make a metadata query against the network of library servers
4854:
4855: sub metadata_query {
4856: my ($query,$custom,$customshow,$server_array)=@_;
4857: my %rhash;
4858: my %libserv = &all_library();
4859: my @server_list = (defined($server_array) ? @$server_array
4860: : keys(%libserv) );
4861: for my $server (@server_list) {
4862: unless ($custom or $customshow) {
4863: my $reply=&reply("querysend:".&escape($query),$server);
4864: $rhash{$server}=$reply;
4865: }
4866: else {
4867: my $reply=&reply("querysend:".&escape($query).':'.
4868: &escape($custom).':'.&escape($customshow),
4869: $server);
4870: $rhash{$server}=$reply;
4871: }
4872: }
4873: return \%rhash;
4874: }
4875:
4876: # ----------------------------------------- Send log queries and wait for reply
4877:
4878: sub log_query {
4879: my ($uname,$udom,$query,%filters)=@_;
4880: my $uhome=&homeserver($uname,$udom);
4881: if ($uhome eq 'no_host') { return 'error: no_host'; }
4882: my $uhost=&hostname($uhome);
4883: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
4884: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
4885: $uhome);
4886: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
4887: return get_query_reply($queryid);
4888: }
4889:
4890: # -------------------------- Update MySQL table for portfolio file
4891:
4892: sub update_portfolio_table {
4893: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
4894: my $homeserver = &homeserver($uname,$udom);
4895: my $queryid=
4896: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
4897: ':'.&escape($file_name).':'.$action,$homeserver);
4898: my $reply = &get_query_reply($queryid);
4899: return $reply;
4900: }
4901:
4902: # -------------------------- Update MySQL allusers table
4903:
4904: sub update_allusers_table {
4905: my ($uname,$udom,$names) = @_;
4906: my $homeserver = &homeserver($uname,$udom);
4907: my $queryid=
4908: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
4909: 'lastname='.&escape($names->{'lastname'}).'%%'.
4910: 'firstname='.&escape($names->{'firstname'}).'%%'.
4911: 'middlename='.&escape($names->{'middlename'}).'%%'.
4912: 'generation='.&escape($names->{'generation'}).'%%'.
4913: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
4914: 'id='.&escape($names->{'id'}),$homeserver);
4915: my $reply = &get_query_reply($queryid);
4916: return $reply;
4917: }
4918:
4919: # ------- Request retrieval of institutional classlists for course(s)
4920:
4921: sub fetch_enrollment_query {
4922: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
4923: my $homeserver;
4924: my $maxtries = 1;
4925: if ($context eq 'automated') {
4926: $homeserver = $perlvar{'lonHostID'};
4927: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
4928: } else {
4929: $homeserver = &homeserver($cnum,$dom);
4930: }
4931: my $host=&hostname($homeserver);
4932: my $cmd = '';
4933: foreach my $affiliate (keys %{$affiliatesref}) {
4934: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
4935: }
4936: $cmd =~ s/%%$//;
4937: $cmd = &escape($cmd);
4938: my $query = 'fetchenrollment';
4939: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
4940: unless ($queryid=~/^\Q$host\E\_/) {
4941: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
4942: return 'error: '.$queryid;
4943: }
4944: my $reply = &get_query_reply($queryid);
4945: my $tries = 1;
4946: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
4947: $reply = &get_query_reply($queryid);
4948: $tries ++;
4949: }
4950: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
4951: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
4952: } else {
4953: my @responses = split(/:/,$reply);
4954: if ($homeserver eq $perlvar{'lonHostID'}) {
4955: foreach my $line (@responses) {
4956: my ($key,$value) = split(/=/,$line,2);
4957: $$replyref{$key} = $value;
4958: }
4959: } else {
4960: my $pathname = $perlvar{'lonDaemons'}.'/tmp';
4961: foreach my $line (@responses) {
4962: my ($key,$value) = split(/=/,$line);
4963: $$replyref{$key} = $value;
4964: if ($value > 0) {
4965: foreach my $item (@{$$affiliatesref{$key}}) {
4966: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
4967: my $destname = $pathname.'/'.$filename;
4968: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
4969: if ($xml_classlist =~ /^error/) {
4970: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
4971: } else {
4972: if ( open(FILE,">$destname") ) {
4973: print FILE &unescape($xml_classlist);
4974: close(FILE);
4975: } else {
4976: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
4977: }
4978: }
4979: }
4980: }
4981: }
4982: }
4983: return 'ok';
4984: }
4985: return 'error';
4986: }
4987:
4988: sub get_query_reply {
4989: my $queryid=shift;
4990: my $replyfile=$perlvar{'lonDaemons'}.'/tmp/'.$queryid;
4991: my $reply='';
4992: for (1..100) {
4993: sleep 2;
4994: if (-e $replyfile.'.end') {
4995: if (open(my $fh,$replyfile)) {
4996: $reply = join('',<$fh>);
4997: close($fh);
4998: } else { return 'error: reply_file_error'; }
4999: return &unescape($reply);
5000: }
5001: }
5002: return 'timeout:'.$queryid;
5003: }
5004:
5005: sub courselog_query {
5006: #
5007: # possible filters:
5008: # url: url or symb
5009: # username
5010: # domain
5011: # action: view, submit, grade
5012: # start: timestamp
5013: # end: timestamp
5014: #
5015: my (%filters)=@_;
5016: unless ($env{'request.course.id'}) { return 'no_course'; }
5017: if ($filters{'url'}) {
5018: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
5019: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
5020: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
5021: }
5022: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
5023: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
5024: return &log_query($cname,$cdom,'courselog',%filters);
5025: }
5026:
5027: sub userlog_query {
5028: #
5029: # possible filters:
5030: # action: log check role
5031: # start: timestamp
5032: # end: timestamp
5033: #
5034: my ($uname,$udom,%filters)=@_;
5035: return &log_query($uname,$udom,'userlog',%filters);
5036: }
5037:
5038: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
5039:
5040: sub auto_run {
5041: my ($cnum,$cdom) = @_;
5042: my $response = 0;
5043: my $settings;
5044: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
5045: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
5046: $settings = $domconfig{'autoenroll'};
5047: if ($settings->{'run'} eq '1') {
5048: $response = 1;
5049: }
5050: } else {
5051: my $homeserver;
5052: if (&is_course($cdom,$cnum)) {
5053: $homeserver = &homeserver($cnum,$cdom);
5054: } else {
5055: $homeserver = &domain($cdom,'primary');
5056: }
5057: if ($homeserver ne 'no_host') {
5058: $response = &reply('autorun:'.$cdom,$homeserver);
5059: }
5060: }
5061: return $response;
5062: }
5063:
5064: sub auto_get_sections {
5065: my ($cnum,$cdom,$inst_coursecode) = @_;
5066: my $homeserver = &homeserver($cnum,$cdom);
5067: my @secs = ();
5068: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
5069: unless ($response eq 'refused') {
5070: @secs = split(/:/,$response);
5071: }
5072: return @secs;
5073: }
5074:
5075: sub auto_new_course {
5076: my ($cnum,$cdom,$inst_course_id,$owner) = @_;
5077: my $homeserver = &homeserver($cnum,$cdom);
5078: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.$owner.':'.$cdom,$homeserver));
5079: return $response;
5080: }
5081:
5082: sub auto_validate_courseID {
5083: my ($cnum,$cdom,$inst_course_id) = @_;
5084: my $homeserver = &homeserver($cnum,$cdom);
5085: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
5086: return $response;
5087: }
5088:
5089: sub auto_create_password {
5090: my ($cnum,$cdom,$authparam,$udom) = @_;
5091: my ($homeserver,$response);
5092: my $create_passwd = 0;
5093: my $authchk = '';
5094: if ($udom =~ /^$match_domain$/) {
5095: $homeserver = &domain($udom,'primary');
5096: }
5097: if ($homeserver eq '') {
5098: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
5099: $homeserver = &homeserver($cnum,$cdom);
5100: }
5101: }
5102: if ($homeserver eq '') {
5103: $authchk = 'nodomain';
5104: } else {
5105: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
5106: if ($response eq 'refused') {
5107: $authchk = 'refused';
5108: } else {
5109: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
5110: }
5111: }
5112: return ($authparam,$create_passwd,$authchk);
5113: }
5114:
5115: sub auto_photo_permission {
5116: my ($cnum,$cdom,$students) = @_;
5117: my $homeserver = &homeserver($cnum,$cdom);
5118: my ($outcome,$perm_reqd,$conditions) =
5119: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
5120: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5121: return (undef,undef);
5122: }
5123: return ($outcome,$perm_reqd,$conditions);
5124: }
5125:
5126: sub auto_checkphotos {
5127: my ($uname,$udom,$pid) = @_;
5128: my $homeserver = &homeserver($uname,$udom);
5129: my ($result,$resulttype);
5130: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
5131: &escape($uname).':'.&escape($pid),
5132: $homeserver));
5133: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5134: return (undef,undef);
5135: }
5136: if ($outcome) {
5137: ($result,$resulttype) = split(/:/,$outcome);
5138: }
5139: return ($result,$resulttype);
5140: }
5141:
5142: sub auto_photochoice {
5143: my ($cnum,$cdom) = @_;
5144: my $homeserver = &homeserver($cnum,$cdom);
5145: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
5146: &escape($cdom),
5147: $homeserver)));
5148: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5149: return (undef,undef);
5150: }
5151: return ($update,$comment);
5152: }
5153:
5154: sub auto_photoupdate {
5155: my ($affiliatesref,$dom,$cnum,$photo) = @_;
5156: my $homeserver = &homeserver($cnum,$dom);
5157: my $host=&hostname($homeserver);
5158: my $cmd = '';
5159: my $maxtries = 1;
5160: foreach my $affiliate (keys(%{$affiliatesref})) {
5161: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
5162: }
5163: $cmd =~ s/%%$//;
5164: $cmd = &escape($cmd);
5165: my $query = 'institutionalphotos';
5166: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
5167: unless ($queryid=~/^\Q$host\E\_/) {
5168: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
5169: return 'error: '.$queryid;
5170: }
5171: my $reply = &get_query_reply($queryid);
5172: my $tries = 1;
5173: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
5174: $reply = &get_query_reply($queryid);
5175: $tries ++;
5176: }
5177: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
5178: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
5179: } else {
5180: my @responses = split(/:/,$reply);
5181: my $outcome = shift(@responses);
5182: foreach my $item (@responses) {
5183: my ($key,$value) = split(/=/,$item);
5184: $$photo{$key} = $value;
5185: }
5186: return $outcome;
5187: }
5188: return 'error';
5189: }
5190:
5191: sub auto_instcode_format {
5192: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
5193: $cat_order) = @_;
5194: my $courses = '';
5195: my @homeservers;
5196: if ($caller eq 'global') {
5197: my %servers = &get_servers($codedom,'library');
5198: foreach my $tryserver (keys(%servers)) {
5199: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
5200: push(@homeservers,$tryserver);
5201: }
5202: }
5203: } else {
5204: push(@homeservers,&homeserver($caller,$codedom));
5205: }
5206: foreach my $code (keys(%{$instcodes})) {
5207: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
5208: }
5209: chop($courses);
5210: my $ok_response = 0;
5211: my $response;
5212: while (@homeservers > 0 && $ok_response == 0) {
5213: my $server = shift(@homeservers);
5214: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
5215: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
5216: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
5217: split(/:/,$response);
5218: %{$codes} = (%{$codes},&str2hash($codes_str));
5219: push(@{$codetitles},&str2array($codetitles_str));
5220: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
5221: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
5222: $ok_response = 1;
5223: }
5224: }
5225: if ($ok_response) {
5226: return 'ok';
5227: } else {
5228: return $response;
5229: }
5230: }
5231:
5232: sub auto_instcode_defaults {
5233: my ($domain,$returnhash,$code_order) = @_;
5234: my @homeservers;
5235:
5236: my %servers = &get_servers($domain,'library');
5237: foreach my $tryserver (keys(%servers)) {
5238: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
5239: push(@homeservers,$tryserver);
5240: }
5241: }
5242:
5243: my $response;
5244: foreach my $server (@homeservers) {
5245: $response=&reply('autoinstcodedefaults:'.$domain,$server);
5246: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
5247:
5248: foreach my $pair (split(/\&/,$response)) {
5249: my ($name,$value)=split(/\=/,$pair);
5250: if ($name eq 'code_order') {
5251: @{$code_order} = split(/\&/,&unescape($value));
5252: } else {
5253: $returnhash->{&unescape($name)}=&unescape($value);
5254: }
5255: }
5256: return 'ok';
5257: }
5258:
5259: return $response;
5260: }
5261:
5262: sub auto_validate_class_sec {
5263: my ($cdom,$cnum,$owners,$inst_class) = @_;
5264: my $homeserver = &homeserver($cnum,$cdom);
5265: my $ownerlist;
5266: if (ref($owners) eq 'ARRAY') {
5267: $ownerlist = join(',',@{$owners});
5268: } else {
5269: $ownerlist = $owners;
5270: }
5271: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
5272: &escape($ownerlist).':'.$cdom,$homeserver);
5273: return $response;
5274: }
5275:
5276: # ------------------------------------------------------- Course Group routines
5277:
5278: sub get_coursegroups {
5279: my ($cdom,$cnum,$group,$namespace) = @_;
5280: return(&dump($namespace,$cdom,$cnum,$group));
5281: }
5282:
5283: sub modify_coursegroup {
5284: my ($cdom,$cnum,$groupsettings) = @_;
5285: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
5286: }
5287:
5288: sub toggle_coursegroup_status {
5289: my ($cdom,$cnum,$group,$action) = @_;
5290: my ($from_namespace,$to_namespace);
5291: if ($action eq 'delete') {
5292: $from_namespace = 'coursegroups';
5293: $to_namespace = 'deleted_groups';
5294: } else {
5295: $from_namespace = 'deleted_groups';
5296: $to_namespace = 'coursegroups';
5297: }
5298: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
5299: if (my $tmp = &error(%curr_group)) {
5300: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
5301: return ('read error',$tmp);
5302: } else {
5303: my %savedsettings = %curr_group;
5304: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
5305: my $deloutcome;
5306: if ($result eq 'ok') {
5307: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
5308: } else {
5309: return ('write error',$result);
5310: }
5311: if ($deloutcome eq 'ok') {
5312: return 'ok';
5313: } else {
5314: return ('delete error',$deloutcome);
5315: }
5316: }
5317: }
5318:
5319: sub modify_group_roles {
5320: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
5321: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
5322: my $role = 'gr/'.&escape($userprivs);
5323: my ($uname,$udom) = split(/:/,$user);
5324: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
5325: if ($result eq 'ok') {
5326: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
5327: }
5328: return $result;
5329: }
5330:
5331: sub modify_coursegroup_membership {
5332: my ($cdom,$cnum,$membership) = @_;
5333: my $result = &put('groupmembership',$membership,$cdom,$cnum);
5334: return $result;
5335: }
5336:
5337: sub get_active_groups {
5338: my ($udom,$uname,$cdom,$cnum) = @_;
5339: my $now = time;
5340: my %groups = ();
5341: foreach my $key (keys(%env)) {
5342: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
5343: my ($start,$end) = split(/\./,$env{$key});
5344: if (($end!=0) && ($end<$now)) { next; }
5345: if (($start!=0) && ($start>$now)) { next; }
5346: if ($1 eq $cdom && $2 eq $cnum) {
5347: $groups{$3} = $env{$key} ;
5348: }
5349: }
5350: }
5351: return %groups;
5352: }
5353:
5354: sub get_group_membership {
5355: my ($cdom,$cnum,$group) = @_;
5356: return(&dump('groupmembership',$cdom,$cnum,$group));
5357: }
5358:
5359: sub get_users_groups {
5360: my ($udom,$uname,$courseid) = @_;
5361: my @usersgroups;
5362: my $cachetime=1800;
5363:
5364: my $hashid="$udom:$uname:$courseid";
5365: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
5366: if (defined($cached)) {
5367: @usersgroups = split(/:/,$grouplist);
5368: } else {
5369: $grouplist = '';
5370: my $courseurl = &courseid_to_courseurl($courseid);
5371: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
5372: my $access_end = $env{'course.'.$courseid.
5373: '.default_enrollment_end_date'};
5374: my $now = time;
5375: foreach my $key (keys(%roleshash)) {
5376: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
5377: my $group = $1;
5378: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
5379: my $start = $2;
5380: my $end = $1;
5381: if ($start == -1) { next; } # deleted from group
5382: if (($start!=0) && ($start>$now)) { next; }
5383: if (($end!=0) && ($end<$now)) {
5384: if ($access_end && $access_end < $now) {
5385: if ($access_end - $end < 86400) {
5386: push(@usersgroups,$group);
5387: }
5388: }
5389: next;
5390: }
5391: push(@usersgroups,$group);
5392: }
5393: }
5394: }
5395: @usersgroups = &sort_course_groups($courseid,@usersgroups);
5396: $grouplist = join(':',@usersgroups);
5397: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
5398: }
5399: return @usersgroups;
5400: }
5401:
5402: sub devalidate_getgroups_cache {
5403: my ($udom,$uname,$cdom,$cnum)=@_;
5404: my $courseid = $cdom.'_'.$cnum;
5405:
5406: my $hashid="$udom:$uname:$courseid";
5407: &devalidate_cache_new('getgroups',$hashid);
5408: }
5409:
5410: # ------------------------------------------------------------------ Plain Text
5411:
5412: sub plaintext {
5413: my ($short,$type,$cid) = @_;
5414: if ($short =~ /^cr/) {
5415: return (split('/',$short))[-1];
5416: }
5417: if (!defined($cid)) {
5418: $cid = $env{'request.course.id'};
5419: }
5420: if (defined($cid) && defined($env{'course.'.$cid.'.'.$short.'.plaintext'})) {
5421: return &Apache::lonlocal::mt($env{'course.'.$cid.'.'.$short.
5422: '.plaintext'});
5423: }
5424: my %rolenames = (
5425: Course => 'std',
5426: Group => 'alt1',
5427: );
5428: if (defined($type) &&
5429: defined($rolenames{$type}) &&
5430: defined($prp{$short}{$rolenames{$type}})) {
5431: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
5432: } else {
5433: return &Apache::lonlocal::mt($prp{$short}{'std'});
5434: }
5435: }
5436:
5437: # ----------------------------------------------------------------- Assign Role
5438:
5439: sub assignrole {
5440: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
5441: $context)=@_;
5442: my $mrole;
5443: if ($role =~ /^cr\//) {
5444: my $cwosec=$url;
5445: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
5446: unless (&allowed('ccr',$cwosec)) {
5447: &logthis('Refused custom assignrole: '.
5448: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
5449: $env{'user.name'}.' at '.$env{'user.domain'});
5450: return 'refused';
5451: }
5452: $mrole='cr';
5453: } elsif ($role =~ /^gr\//) {
5454: my $cwogrp=$url;
5455: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
5456: unless (&allowed('mdg',$cwogrp)) {
5457: &logthis('Refused group assignrole: '.
5458: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
5459: $env{'user.name'}.' at '.$env{'user.domain'});
5460: return 'refused';
5461: }
5462: $mrole='gr';
5463: } else {
5464: my $cwosec=$url;
5465: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
5466: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
5467: my $refused;
5468: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
5469: if (!(&allowed('c'.$role,$url))) {
5470: $refused = 1;
5471: }
5472: } else {
5473: $refused = 1;
5474: }
5475: if ($refused) {
5476: if (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5477: $refused = '';
5478: } else {
5479: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
5480: ' '.$role.' '.$end.' '.$start.' by '.
5481: $env{'user.name'}.' at '.$env{'user.domain'});
5482: return 'refused';
5483: }
5484: }
5485: }
5486: $mrole=$role;
5487: }
5488: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
5489: "$udom:$uname:$url".'_'."$mrole=$role";
5490: if ($end) { $command.='_'.$end; }
5491: if ($start) {
5492: if ($end) {
5493: $command.='_'.$start;
5494: } else {
5495: $command.='_0_'.$start;
5496: }
5497: }
5498: my $origstart = $start;
5499: my $origend = $end;
5500: my $delflag;
5501: # actually delete
5502: if ($deleteflag) {
5503: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
5504: # modify command to delete the role
5505: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
5506: "$udom:$uname:$url".'_'."$mrole";
5507: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
5508: # set start and finish to negative values for userrolelog
5509: $start=-1;
5510: $end=-1;
5511: $delflag = 1;
5512: }
5513: }
5514: # send command
5515: my $answer=&reply($command,&homeserver($uname,$udom));
5516: # log new user role if status is ok
5517: if ($answer eq 'ok') {
5518: &userrolelog($role,$uname,$udom,$url,$start,$end);
5519: # for course roles, perform group memberships changes triggered by role change.
5520: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,$selfenroll,$context);
5521: unless ($role =~ /^gr/) {
5522: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
5523: $origstart,$selfenroll,$context);
5524: }
5525: }
5526: return $answer;
5527: }
5528:
5529: # -------------------------------------------------- Modify user authentication
5530: # Overrides without validation
5531:
5532: sub modifyuserauth {
5533: my ($udom,$uname,$umode,$upass)=@_;
5534: my $uhome=&homeserver($uname,$udom);
5535: unless (&allowed('mau',$udom)) { return 'refused'; }
5536: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
5537: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
5538: ' in domain '.$env{'request.role.domain'});
5539: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
5540: &escape($upass),$uhome);
5541: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
5542: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
5543: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
5544: &log($udom,,$uname,$uhome,
5545: 'Authentication changed by '.$env{'user.domain'}.', '.
5546: $env{'user.name'}.', '.$umode.
5547: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
5548: unless ($reply eq 'ok') {
5549: &logthis('Authentication mode error: '.$reply);
5550: return 'error: '.$reply;
5551: }
5552: return 'ok';
5553: }
5554:
5555: # --------------------------------------------------------------- Modify a user
5556:
5557: sub modifyuser {
5558: my ($udom, $uname, $uid,
5559: $umode, $upass, $first,
5560: $middle, $last, $gene,
5561: $forceid, $desiredhome, $email, $inststatus)=@_;
5562: $udom= &LONCAPA::clean_domain($udom);
5563: $uname=&LONCAPA::clean_username($uname);
5564: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
5565: $umode.', '.$first.', '.$middle.', '.
5566: $last.', '.$gene.'(forceid: '.$forceid.')'.
5567: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
5568: ' desiredhome not specified').
5569: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
5570: ' in domain '.$env{'request.role.domain'});
5571: my $uhome=&homeserver($uname,$udom,'true');
5572: # ----------------------------------------------------------------- Create User
5573: if (($uhome eq 'no_host') &&
5574: (($umode && $upass) || ($umode eq 'localauth'))) {
5575: my $unhome='';
5576: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
5577: $unhome = $desiredhome;
5578: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
5579: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
5580: } else { # load balancing routine for determining $unhome
5581: my $loadm=10000000;
5582: my %servers = &get_servers($udom,'library');
5583: foreach my $tryserver (keys(%servers)) {
5584: my $answer=reply('load',$tryserver);
5585: if (($answer=~/\d+/) && ($answer<$loadm)) {
5586: $loadm=$answer;
5587: $unhome=$tryserver;
5588: }
5589: }
5590: }
5591: if (($unhome eq '') || ($unhome eq 'no_host')) {
5592: return 'error: unable to find a home server for '.$uname.
5593: ' in domain '.$udom;
5594: }
5595: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
5596: &escape($upass),$unhome);
5597: unless ($reply eq 'ok') {
5598: return 'error: '.$reply;
5599: }
5600: $uhome=&homeserver($uname,$udom,'true');
5601: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
5602: return 'error: unable verify users home machine.';
5603: }
5604: } # End of creation of new user
5605: # ---------------------------------------------------------------------- Add ID
5606: if ($uid) {
5607: $uid=~tr/A-Z/a-z/;
5608: my %uidhash=&idrget($udom,$uname);
5609: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
5610: && (!$forceid)) {
5611: unless ($uid eq $uidhash{$uname}) {
5612: return 'error: user id "'.$uid.'" does not match '.
5613: 'current user id "'.$uidhash{$uname}.'".';
5614: }
5615: } else {
5616: &idput($udom,($uname => $uid));
5617: }
5618: }
5619: # -------------------------------------------------------------- Add names, etc
5620: my @tmp=&get('environment',
5621: ['firstname','middlename','lastname','generation','id',
5622: 'permanentemail','inststatus'],
5623: $udom,$uname);
5624: my %names;
5625: if ($tmp[0] =~ m/^error:.*/) {
5626: %names=();
5627: } else {
5628: %names = @tmp;
5629: }
5630: #
5631: # Make sure to not trash student environment if instructor does not bother
5632: # to supply name and email information
5633: #
5634: if ($first) { $names{'firstname'} = $first; }
5635: if (defined($middle)) { $names{'middlename'} = $middle; }
5636: if ($last) { $names{'lastname'} = $last; }
5637: if (defined($gene)) { $names{'generation'} = $gene; }
5638: if ($email) {
5639: $email=~s/[^\w\@\.\-\,]//gs;
5640: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
5641: }
5642: if ($uid) { $names{'id'} = $uid; }
5643: if (defined($inststatus)) { $names{'inststatus'} = $inststatus; }
5644: my $reply = &put('environment', \%names, $udom,$uname);
5645: if ($reply ne 'ok') { return 'error: '.$reply; }
5646: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
5647: &devalidate_cache_new('namescache',$uname.':'.$udom);
5648: my $logmsg = 'Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
5649: $umode.', '.$first.', '.$middle.', '.
5650: $last.', '.$gene.', '.$email.', '.$inststatus;
5651: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
5652: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
5653: } else {
5654: $logmsg .= ' during self creation';
5655: }
5656: &logthis($logmsg);
5657: return 'ok';
5658: }
5659:
5660: # -------------------------------------------------------------- Modify student
5661:
5662: sub modifystudent {
5663: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
5664: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
5665: $selfenroll,$context)=@_;
5666: if (!$cid) {
5667: unless ($cid=$env{'request.course.id'}) {
5668: return 'not_in_class';
5669: }
5670: }
5671: # --------------------------------------------------------------- Make the user
5672: my $reply=&modifyuser
5673: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
5674: $desiredhome,$email);
5675: unless ($reply eq 'ok') { return $reply; }
5676: # This will cause &modify_student_enrollment to get the uid from the
5677: # students environment
5678: $uid = undef if (!$forceid);
5679: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
5680: $gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context);
5681: return $reply;
5682: }
5683:
5684: sub modify_student_enrollment {
5685: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context) = @_;
5686: my ($cdom,$cnum,$chome);
5687: if (!$cid) {
5688: unless ($cid=$env{'request.course.id'}) {
5689: return 'not_in_class';
5690: }
5691: $cdom=$env{'course.'.$cid.'.domain'};
5692: $cnum=$env{'course.'.$cid.'.num'};
5693: } else {
5694: ($cdom,$cnum)=split(/_/,$cid);
5695: }
5696: $chome=$env{'course.'.$cid.'.home'};
5697: if (!$chome) {
5698: $chome=&homeserver($cnum,$cdom);
5699: }
5700: if (!$chome) { return 'unknown_course'; }
5701: # Make sure the user exists
5702: my $uhome=&homeserver($uname,$udom);
5703: if (($uhome eq '') || ($uhome eq 'no_host')) {
5704: return 'error: no such user';
5705: }
5706: # Get student data if we were not given enough information
5707: if (!defined($first) || $first eq '' ||
5708: !defined($last) || $last eq '' ||
5709: !defined($uid) || $uid eq '' ||
5710: !defined($middle) || $middle eq '' ||
5711: !defined($gene) || $gene eq '') {
5712: # They did not supply us with enough data to enroll the student, so
5713: # we need to pick up more information.
5714: my %tmp = &get('environment',
5715: ['firstname','middlename','lastname', 'generation','id']
5716: ,$udom,$uname);
5717:
5718: #foreach my $key (keys(%tmp)) {
5719: # &logthis("key $key = ".$tmp{$key});
5720: #}
5721: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
5722: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
5723: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
5724: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
5725: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
5726: }
5727: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
5728: my $reply=cput('classlist',
5729: {"$uname:$udom" =>
5730: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
5731: $cdom,$cnum);
5732: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
5733: return 'error: '.$reply;
5734: } else {
5735: &devalidate_getsection_cache($udom,$uname,$cid);
5736: }
5737: # Add student role to user
5738: my $uurl='/'.$cid;
5739: $uurl=~s/\_/\//g;
5740: if ($usec) {
5741: $uurl.='/'.$usec;
5742: }
5743: return &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,$selfenroll,$context);
5744: }
5745:
5746: sub format_name {
5747: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
5748: my $name;
5749: if ($first ne 'lastname') {
5750: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
5751: } else {
5752: if ($lastname=~/\S/) {
5753: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
5754: $name=~s/\s+,/,/;
5755: } else {
5756: $name.= $firstname.' '.$middlename.' '.$generation;
5757: }
5758: }
5759: $name=~s/^\s+//;
5760: $name=~s/\s+$//;
5761: $name=~s/\s+/ /g;
5762: return $name;
5763: }
5764:
5765: # ------------------------------------------------- Write to course preferences
5766:
5767: sub writecoursepref {
5768: my ($courseid,%prefs)=@_;
5769: $courseid=~s/^\///;
5770: $courseid=~s/\_/\//g;
5771: my ($cdomain,$cnum)=split(/\//,$courseid);
5772: my $chome=homeserver($cnum,$cdomain);
5773: if (($chome eq '') || ($chome eq 'no_host')) {
5774: return 'error: no such course';
5775: }
5776: my $cstring='';
5777: foreach my $pref (keys(%prefs)) {
5778: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
5779: }
5780: $cstring=~s/\&$//;
5781: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
5782: }
5783:
5784: # ---------------------------------------------------------- Make/modify course
5785:
5786: sub createcourse {
5787: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
5788: $course_owner,$crstype)=@_;
5789: $url=&declutter($url);
5790: my $cid='';
5791: unless (&allowed('ccc',$udom)) {
5792: return 'refused';
5793: }
5794: # ------------------------------------------------------------------- Create ID
5795: my $uname=int(1+rand(9)).
5796: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
5797: substr($$.time,0,5).unpack("H8",pack("I32",time)).
5798: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
5799: # ----------------------------------------------- Make sure that does not exist
5800: my $uhome=&homeserver($uname,$udom,'true');
5801: unless (($uhome eq '') || ($uhome eq 'no_host')) {
5802: $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
5803: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
5804: $uhome=&homeserver($uname,$udom,'true');
5805: unless (($uhome eq '') || ($uhome eq 'no_host')) {
5806: return 'error: unable to generate unique course-ID';
5807: }
5808: }
5809: # ------------------------------------------------ Check supplied server name
5810: $course_server = $env{'user.homeserver'} if (! defined($course_server));
5811: if (! &is_library($course_server)) {
5812: return 'error:bad server name '.$course_server;
5813: }
5814: # ------------------------------------------------------------- Make the course
5815: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
5816: $course_server);
5817: unless ($reply eq 'ok') { return 'error: '.$reply; }
5818: $uhome=&homeserver($uname,$udom,'true');
5819: if (($uhome eq '') || ($uhome eq 'no_host')) {
5820: return 'error: no such course';
5821: }
5822: # ----------------------------------------------------------------- Course made
5823: # log existence
5824: my $newcourse = {
5825: $udom.'_'.$uname => {
5826: description => $description,
5827: inst_code => $inst_code,
5828: owner => $course_owner,
5829: type => $crstype,
5830: },
5831: };
5832: &courseidput($udom,$newcourse,$uhome,'notime');
5833: # set toplevel url
5834: my $topurl=$url;
5835: unless ($nonstandard) {
5836: # ------------------------------------------ For standard courses, make top url
5837: my $mapurl=&clutter($url);
5838: if ($mapurl eq '/res/') { $mapurl=''; }
5839: $env{'form.initmap'}=(<<ENDINITMAP);
5840: <map>
5841: <resource id="1" type="start"></resource>
5842: <resource id="2" src="$mapurl"></resource>
5843: <resource id="3" type="finish"></resource>
5844: <link index="1" from="1" to="2"></link>
5845: <link index="2" from="2" to="3"></link>
5846: </map>
5847: ENDINITMAP
5848: $topurl=&declutter(
5849: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
5850: );
5851: }
5852: # ----------------------------------------------------------- Write preferences
5853: &writecoursepref($udom.'_'.$uname,
5854: ('description' => $description,
5855: 'url' => $topurl));
5856: return '/'.$udom.'/'.$uname;
5857: }
5858:
5859: sub is_course {
5860: my ($cdom,$cnum) = @_;
5861: my %courses = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,
5862: undef,'.');
5863: if (exists($courses{$cdom.'_'.$cnum})) {
5864: return 1;
5865: }
5866: return 0;
5867: }
5868:
5869: # ---------------------------------------------------------- Assign Custom Role
5870:
5871: sub assigncustomrole {
5872: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
5873: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
5874: $end,$start,$deleteflag,$selfenroll,$context);
5875: }
5876:
5877: # ----------------------------------------------------------------- Revoke Role
5878:
5879: sub revokerole {
5880: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
5881: my $now=time;
5882: return &assignrole($udom,$uname,$url,$role,$now,$deleteflag,$selfenroll,$context);
5883: }
5884:
5885: # ---------------------------------------------------------- Revoke Custom Role
5886:
5887: sub revokecustomrole {
5888: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
5889: my $now=time;
5890: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
5891: $deleteflag,$selfenroll,$context);
5892: }
5893:
5894: # ------------------------------------------------------------ Disk usage
5895: sub diskusage {
5896: my ($udom,$uname,$directorypath,$getpropath)=@_;
5897: $directorypath =~ s/\/$//;
5898: my $listing=&reply('du2:'.&escape($directorypath).':'
5899: .&escape($getpropath).':'.&escape($uname).':'
5900: .&escape($udom),homeserver($uname,$udom));
5901: if ($listing eq 'unknown_cmd') {
5902: if ($getpropath) {
5903: $directorypath = &propath($udom,$uname).'/'.$directorypath;
5904: }
5905: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
5906: }
5907: return $listing;
5908: }
5909:
5910: sub is_locked {
5911: my ($file_name, $domain, $user) = @_;
5912: my @check;
5913: my $is_locked;
5914: push @check, $file_name;
5915: my %locked = &get('file_permissions',\@check,
5916: $env{'user.domain'},$env{'user.name'});
5917: my ($tmp)=keys(%locked);
5918: if ($tmp=~/^error:/) { undef(%locked); }
5919:
5920: if (ref($locked{$file_name}) eq 'ARRAY') {
5921: $is_locked = 'false';
5922: foreach my $entry (@{$locked{$file_name}}) {
5923: if (ref($entry) eq 'ARRAY') {
5924: $is_locked = 'true';
5925: last;
5926: }
5927: }
5928: } else {
5929: $is_locked = 'false';
5930: }
5931: }
5932:
5933: sub declutter_portfile {
5934: my ($file) = @_;
5935: $file =~ s{^(/portfolio/|portfolio/)}{/};
5936: return $file;
5937: }
5938:
5939: # ------------------------------------------------------------- Mark as Read Only
5940:
5941: sub mark_as_readonly {
5942: my ($domain,$user,$files,$what) = @_;
5943: my %current_permissions = &dump('file_permissions',$domain,$user);
5944: my ($tmp)=keys(%current_permissions);
5945: if ($tmp=~/^error:/) { undef(%current_permissions); }
5946: foreach my $file (@{$files}) {
5947: $file = &declutter_portfile($file);
5948: push(@{$current_permissions{$file}},$what);
5949: }
5950: &put('file_permissions',\%current_permissions,$domain,$user);
5951: return;
5952: }
5953:
5954: # ------------------------------------------------------------Save Selected Files
5955:
5956: sub save_selected_files {
5957: my ($user, $path, @files) = @_;
5958: my $filename = $user."savedfiles";
5959: my @other_files = &files_not_in_path($user, $path);
5960: open (OUT, '>'.$tmpdir.$filename);
5961: foreach my $file (@files) {
5962: print (OUT $env{'form.currentpath'}.$file."\n");
5963: }
5964: foreach my $file (@other_files) {
5965: print (OUT $file."\n");
5966: }
5967: close (OUT);
5968: return 'ok';
5969: }
5970:
5971: sub clear_selected_files {
5972: my ($user) = @_;
5973: my $filename = $user."savedfiles";
5974: open (OUT, '>'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
5975: print (OUT undef);
5976: close (OUT);
5977: return ("ok");
5978: }
5979:
5980: sub files_in_path {
5981: my ($user, $path) = @_;
5982: my $filename = $user."savedfiles";
5983: my %return_files;
5984: open (IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
5985: while (my $line_in = <IN>) {
5986: chomp ($line_in);
5987: my @paths_and_file = split (m!/!, $line_in);
5988: my $file_part = pop (@paths_and_file);
5989: my $path_part = join ('/', @paths_and_file);
5990: $path_part.='/';
5991: my $path_and_file = $path_part.$file_part;
5992: if ($path_part eq $path) {
5993: $return_files{$file_part}= 'selected';
5994: }
5995: }
5996: close (IN);
5997: return (\%return_files);
5998: }
5999:
6000: # called in portfolio select mode, to show files selected NOT in current directory
6001: sub files_not_in_path {
6002: my ($user, $path) = @_;
6003: my $filename = $user."savedfiles";
6004: my @return_files;
6005: my $path_part;
6006: open(IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
6007: while (my $line = <IN>) {
6008: #ok, I know it's clunky, but I want it to work
6009: my @paths_and_file = split(m|/|, $line);
6010: my $file_part = pop(@paths_and_file);
6011: chomp($file_part);
6012: my $path_part = join('/', @paths_and_file);
6013: $path_part .= '/';
6014: my $path_and_file = $path_part.$file_part;
6015: if ($path_part ne $path) {
6016: push(@return_files, ($path_and_file));
6017: }
6018: }
6019: close(OUT);
6020: return (@return_files);
6021: }
6022:
6023: #----------------------------------------------Get portfolio file permissions
6024:
6025: sub get_portfile_permissions {
6026: my ($domain,$user) = @_;
6027: my %current_permissions = &dump('file_permissions',$domain,$user);
6028: my ($tmp)=keys(%current_permissions);
6029: if ($tmp=~/^error:/) { undef(%current_permissions); }
6030: return \%current_permissions;
6031: }
6032:
6033: #---------------------------------------------Get portfolio file access controls
6034:
6035: sub get_access_controls {
6036: my ($current_permissions,$group,$file) = @_;
6037: my %access;
6038: my $real_file = $file;
6039: $file =~ s/\.meta$//;
6040: if (defined($file)) {
6041: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
6042: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
6043: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
6044: }
6045: }
6046: } else {
6047: foreach my $key (keys(%{$current_permissions})) {
6048: if ($key =~ /\0accesscontrol$/) {
6049: if (defined($group)) {
6050: if ($key !~ m-^\Q$group\E/-) {
6051: next;
6052: }
6053: }
6054: my ($fullpath) = split(/\0/,$key);
6055: if (ref($$current_permissions{$key}) eq 'HASH') {
6056: foreach my $control (keys(%{$$current_permissions{$key}})) {
6057: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
6058: }
6059: }
6060: }
6061: }
6062: }
6063: return %access;
6064: }
6065:
6066: sub modify_access_controls {
6067: my ($file_name,$changes,$domain,$user)=@_;
6068: my ($outcome,$deloutcome);
6069: my %store_permissions;
6070: my %new_values;
6071: my %new_control;
6072: my %translation;
6073: my @deletions = ();
6074: my $now = time;
6075: if (exists($$changes{'activate'})) {
6076: if (ref($$changes{'activate'}) eq 'HASH') {
6077: my @newitems = sort(keys(%{$$changes{'activate'}}));
6078: my $numnew = scalar(@newitems);
6079: for (my $i=0; $i<$numnew; $i++) {
6080: my $newkey = $newitems[$i];
6081: my $newid = &Apache::loncommon::get_cgi_id();
6082: if ($newkey =~ /^\d+:/) {
6083: $newkey =~ s/^(\d+)/$newid/;
6084: $translation{$1} = $newid;
6085: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
6086: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
6087: $translation{$1} = $newid;
6088: }
6089: $new_values{$file_name."\0".$newkey} =
6090: $$changes{'activate'}{$newitems[$i]};
6091: $new_control{$newkey} = $now;
6092: }
6093: }
6094: }
6095: my %todelete;
6096: my %changed_items;
6097: foreach my $action ('delete','update') {
6098: if (exists($$changes{$action})) {
6099: if (ref($$changes{$action}) eq 'HASH') {
6100: foreach my $key (keys(%{$$changes{$action}})) {
6101: my ($itemnum) = ($key =~ /^([^:]+):/);
6102: if ($action eq 'delete') {
6103: $todelete{$itemnum} = 1;
6104: } else {
6105: $changed_items{$itemnum} = $key;
6106: }
6107: }
6108: }
6109: }
6110: }
6111: # get lock on access controls for file.
6112: my $lockhash = {
6113: $file_name."\0".'locked_access_records' => $env{'user.name'}.
6114: ':'.$env{'user.domain'},
6115: };
6116: my $tries = 0;
6117: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
6118:
6119: while (($gotlock ne 'ok') && $tries <3) {
6120: $tries ++;
6121: sleep 1;
6122: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
6123: }
6124: if ($gotlock eq 'ok') {
6125: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
6126: my ($tmp)=keys(%curr_permissions);
6127: if ($tmp=~/^error:/) { undef(%curr_permissions); }
6128: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
6129: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
6130: if (ref($curr_controls) eq 'HASH') {
6131: foreach my $control_item (keys(%{$curr_controls})) {
6132: my ($itemnum) = ($control_item =~ /^([^:]+):/);
6133: if (defined($todelete{$itemnum})) {
6134: push(@deletions,$file_name."\0".$control_item);
6135: } else {
6136: if (defined($changed_items{$itemnum})) {
6137: $new_control{$changed_items{$itemnum}} = $now;
6138: push(@deletions,$file_name."\0".$control_item);
6139: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
6140: } else {
6141: $new_control{$control_item} = $$curr_controls{$control_item};
6142: }
6143: }
6144: }
6145: }
6146: }
6147: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
6148: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
6149: $outcome = &put('file_permissions',\%new_values,$domain,$user);
6150: # remove lock
6151: my @del_lock = ($file_name."\0".'locked_access_records');
6152: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
6153: my ($file,$group);
6154: if (&is_course($domain,$user)) {
6155: ($group,$file) = split(/\//,$file_name,2);
6156: } else {
6157: $file = $file_name;
6158: }
6159: my $sqlresult =
6160: &update_portfolio_table($user,$domain,$file,'portfolio_access',
6161: $group);
6162: } else {
6163: $outcome = "error: could not obtain lockfile\n";
6164: }
6165: return ($outcome,$deloutcome,\%new_values,\%translation);
6166: }
6167:
6168: sub make_public_indefinitely {
6169: my ($requrl) = @_;
6170: my $now = time;
6171: my $action = 'activate';
6172: my $aclnum = 0;
6173: if (&is_portfolio_url($requrl)) {
6174: my (undef,$udom,$unum,$file_name,$group) =
6175: &parse_portfolio_url($requrl);
6176: my $current_perms = &get_portfile_permissions($udom,$unum);
6177: my %access_controls = &get_access_controls($current_perms,
6178: $group,$file_name);
6179: foreach my $key (keys(%{$access_controls{$file_name}})) {
6180: my ($num,$scope,$end,$start) =
6181: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
6182: if ($scope eq 'public') {
6183: if ($start <= $now && $end == 0) {
6184: $action = 'none';
6185: } else {
6186: $action = 'update';
6187: $aclnum = $num;
6188: }
6189: last;
6190: }
6191: }
6192: if ($action eq 'none') {
6193: return 'ok';
6194: } else {
6195: my %changes;
6196: my $newend = 0;
6197: my $newstart = $now;
6198: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
6199: $changes{$action}{$newkey} = {
6200: type => 'public',
6201: time => {
6202: start => $newstart,
6203: end => $newend,
6204: },
6205: };
6206: my ($outcome,$deloutcome,$new_values,$translation) =
6207: &modify_access_controls($file_name,\%changes,$udom,$unum);
6208: return $outcome;
6209: }
6210: } else {
6211: return 'invalid';
6212: }
6213: }
6214:
6215: #------------------------------------------------------Get Marked as Read Only
6216:
6217: sub get_marked_as_readonly {
6218: my ($domain,$user,$what,$group) = @_;
6219: my $current_permissions = &get_portfile_permissions($domain,$user);
6220: my @readonly_files;
6221: my $cmp1=$what;
6222: if (ref($what)) { $cmp1=join('',@{$what}) };
6223: while (my ($file_name,$value) = each(%{$current_permissions})) {
6224: if (defined($group)) {
6225: if ($file_name !~ m-^\Q$group\E/-) {
6226: next;
6227: }
6228: }
6229: if (ref($value) eq "ARRAY"){
6230: foreach my $stored_what (@{$value}) {
6231: my $cmp2=$stored_what;
6232: if (ref($stored_what) eq 'ARRAY') {
6233: $cmp2=join('',@{$stored_what});
6234: }
6235: if ($cmp1 eq $cmp2) {
6236: push(@readonly_files, $file_name);
6237: last;
6238: } elsif (!defined($what)) {
6239: push(@readonly_files, $file_name);
6240: last;
6241: }
6242: }
6243: }
6244: }
6245: return @readonly_files;
6246: }
6247: #-----------------------------------------------------------Get Marked as Read Only Hash
6248:
6249: sub get_marked_as_readonly_hash {
6250: my ($current_permissions,$group,$what) = @_;
6251: my %readonly_files;
6252: while (my ($file_name,$value) = each(%{$current_permissions})) {
6253: if (defined($group)) {
6254: if ($file_name !~ m-^\Q$group\E/-) {
6255: next;
6256: }
6257: }
6258: if (ref($value) eq "ARRAY"){
6259: foreach my $stored_what (@{$value}) {
6260: if (ref($stored_what) eq 'ARRAY') {
6261: foreach my $lock_descriptor(@{$stored_what}) {
6262: if ($lock_descriptor eq 'graded') {
6263: $readonly_files{$file_name} = 'graded';
6264: } elsif ($lock_descriptor eq 'handback') {
6265: $readonly_files{$file_name} = 'handback';
6266: } else {
6267: if (!exists($readonly_files{$file_name})) {
6268: $readonly_files{$file_name} = 'locked';
6269: }
6270: }
6271: }
6272: }
6273: }
6274: }
6275: }
6276: return %readonly_files;
6277: }
6278: # ------------------------------------------------------------ Unmark as Read Only
6279:
6280: sub unmark_as_readonly {
6281: # unmarks $file_name (if $file_name is defined), or all files locked by $what
6282: # for portfolio submissions, $what contains [$symb,$crsid]
6283: my ($domain,$user,$what,$file_name,$group) = @_;
6284: $file_name = &declutter_portfile($file_name);
6285: my $symb_crs = $what;
6286: if (ref($what)) { $symb_crs=join('',@$what); }
6287: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
6288: my ($tmp)=keys(%current_permissions);
6289: if ($tmp=~/^error:/) { undef(%current_permissions); }
6290: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
6291: foreach my $file (@readonly_files) {
6292: my $clean_file = &declutter_portfile($file);
6293: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
6294: my $current_locks = $current_permissions{$file};
6295: my @new_locks;
6296: my @del_keys;
6297: if (ref($current_locks) eq "ARRAY"){
6298: foreach my $locker (@{$current_locks}) {
6299: my $compare=$locker;
6300: if (ref($locker) eq 'ARRAY') {
6301: $compare=join('',@{$locker});
6302: if ($compare ne $symb_crs) {
6303: push(@new_locks, $locker);
6304: }
6305: }
6306: }
6307: if (scalar(@new_locks) > 0) {
6308: $current_permissions{$file} = \@new_locks;
6309: } else {
6310: push(@del_keys, $file);
6311: &del('file_permissions',\@del_keys, $domain, $user);
6312: delete($current_permissions{$file});
6313: }
6314: }
6315: }
6316: &put('file_permissions',\%current_permissions,$domain,$user);
6317: return;
6318: }
6319:
6320: # ------------------------------------------------------------ Directory lister
6321:
6322: sub dirlist {
6323: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
6324: $uri=~s/^\///;
6325: $uri=~s/\/$//;
6326: my ($udom, $uname);
6327: if ($getuserdir) {
6328: $udom = $userdomain;
6329: $uname = $username;
6330: } else {
6331: (undef,$udom,$uname)=split(/\//,$uri);
6332: if(defined($userdomain)) {
6333: $udom = $userdomain;
6334: }
6335: if(defined($username)) {
6336: $uname = $username;
6337: }
6338: }
6339: my ($dirRoot,$listing,@listing_results);
6340:
6341: $dirRoot = $perlvar{'lonDocRoot'};
6342: if (defined($getpropath)) {
6343: $dirRoot = &propath($udom,$uname);
6344: $dirRoot =~ s/\/$//;
6345: } elsif (defined($getuserdir)) {
6346: my $subdir=$uname.'__';
6347: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
6348: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
6349: ."/$udom/$subdir/$uname";
6350: } elsif (defined($alternateRoot)) {
6351: $dirRoot = $alternateRoot;
6352: }
6353:
6354: if($udom) {
6355: if($uname) {
6356: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
6357: .$getuserdir.':'.&escape($dirRoot)
6358: .':'.&escape($uname).':'.&escape($udom),
6359: &homeserver($uname,$udom));
6360: if ($listing eq 'unknown_cmd') {
6361: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,
6362: &homeserver($uname,$udom));
6363: } else {
6364: @listing_results = map { &unescape($_); } split(/:/,$listing);
6365: }
6366: if ($listing eq 'unknown_cmd') {
6367: $listing = &reply('ls:'.$dirRoot.'/'.$uri,
6368: &homeserver($uname,$udom));
6369: @listing_results = split(/:/,$listing);
6370: } else {
6371: @listing_results = map { &unescape($_); } split(/:/,$listing);
6372: }
6373: return @listing_results;
6374: } elsif(!$alternateRoot) {
6375: my %allusers;
6376: my %servers = &get_servers($udom,'library');
6377: foreach my $tryserver (keys(%servers)) {
6378: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
6379: &escape($udom),$tryserver);
6380: if ($listing eq 'unknown_cmd') {
6381: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
6382: $udom, $tryserver);
6383: } else {
6384: @listing_results = map { &unescape($_); } split(/:/,$listing);
6385: }
6386: if ($listing eq 'unknown_cmd') {
6387: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
6388: $udom, $tryserver);
6389: @listing_results = split(/:/,$listing);
6390: } else {
6391: @listing_results =
6392: map { &unescape($_); } split(/:/,$listing);
6393: }
6394: if ($listing_results[0] ne 'no_such_dir' &&
6395: $listing_results[0] ne 'empty' &&
6396: $listing_results[0] ne 'con_lost') {
6397: foreach my $line (@listing_results) {
6398: my ($entry) = split(/&/,$line,2);
6399: $allusers{$entry} = 1;
6400: }
6401: }
6402: }
6403: my $alluserstr='';
6404: foreach my $user (sort(keys(%allusers))) {
6405: $alluserstr.=$user.'&user:';
6406: }
6407: $alluserstr=~s/:$//;
6408: return split(/:/,$alluserstr);
6409: } else {
6410: return ('missing user name');
6411: }
6412: } elsif(!defined($getpropath)) {
6413: my @all_domains = sort(&all_domains());
6414: foreach my $domain (@all_domains) {
6415: $domain = $perlvar{'lonDocRoot'}.'/res/'.$domain.'/&domain';
6416: }
6417: return @all_domains;
6418: } else {
6419: return ('missing domain');
6420: }
6421: }
6422:
6423: # --------------------------------------------- GetFileTimestamp
6424: # This function utilizes dirlist and returns the date stamp for
6425: # when it was last modified. It will also return an error of -1
6426: # if an error occurs
6427:
6428: sub GetFileTimestamp {
6429: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
6430: $studentDomain = &LONCAPA::clean_domain($studentDomain);
6431: $studentName = &LONCAPA::clean_username($studentName);
6432: my ($fileStat) =
6433: &Apache::lonnet::dirlist($filename,$studentDomain,$studentName,
6434: undef,$getuserdir);
6435: my @stats = split('&', $fileStat);
6436: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
6437: # @stats contains first the filename, then the stat output
6438: return $stats[10]; # so this is 10 instead of 9.
6439: } else {
6440: return -1;
6441: }
6442: }
6443:
6444: sub stat_file {
6445: my ($uri) = @_;
6446: $uri = &clutter_with_no_wrapper($uri);
6447:
6448: my ($udom,$uname,$file);
6449: if ($uri =~ m-^/(uploaded|editupload)/-) {
6450: ($udom,$uname,$file) =
6451: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
6452: $file = 'userfiles/'.$file;
6453: }
6454: if ($uri =~ m-^/res/-) {
6455: ($udom,$uname) =
6456: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
6457: $file = $uri;
6458: }
6459:
6460: if (!$udom || !$uname || !$file) {
6461: # unable to handle the uri
6462: return ();
6463: }
6464: my $getpropath;
6465: if ($file =~ /^userfiles\//) {
6466: $getpropath = 1;
6467: }
6468: my ($result) = &dirlist($file,$udom,$uname,$getpropath);
6469: my @stats = split('&', $result);
6470:
6471: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
6472: shift(@stats); #filename is first
6473: return @stats;
6474: }
6475: return ();
6476: }
6477:
6478: # -------------------------------------------------------- Value of a Condition
6479:
6480: # gets the value of a specific preevaluated condition
6481: # stored in the string $env{user.state.<cid>}
6482: # or looks up a condition reference in the bighash and if if hasn't
6483: # already been evaluated recurses into docondval to get the value of
6484: # the condition, then memoizing it to
6485: # $env{user.state.<cid>.<condition>}
6486: sub directcondval {
6487: my $number=shift;
6488: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
6489: &Apache::lonuserstate::evalstate();
6490: }
6491: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
6492: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
6493: } elsif ($number =~ /^_/) {
6494: my $sub_condition;
6495: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
6496: &GDBM_READER(),0640)) {
6497: $sub_condition=$bighash{'conditions'.$number};
6498: untie(%bighash);
6499: }
6500: my $value = &docondval($sub_condition);
6501: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
6502: return $value;
6503: }
6504: if ($env{'user.state.'.$env{'request.course.id'}}) {
6505: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
6506: } else {
6507: return 2;
6508: }
6509: }
6510:
6511: # get the collection of conditions for this resource
6512: sub condval {
6513: my $condidx=shift;
6514: my $allpathcond='';
6515: foreach my $cond (split(/\|/,$condidx)) {
6516: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
6517: $allpathcond.=
6518: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
6519: }
6520: }
6521: $allpathcond=~s/\|$//;
6522: return &docondval($allpathcond);
6523: }
6524:
6525: #evaluates an expression of conditions
6526: sub docondval {
6527: my ($allpathcond) = @_;
6528: my $result=0;
6529: if ($env{'request.course.id'}
6530: && defined($allpathcond)) {
6531: my $operand='|';
6532: my @stack;
6533: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
6534: if ($chunk eq '(') {
6535: push @stack,($operand,$result);
6536: } elsif ($chunk eq ')') {
6537: my $before=pop @stack;
6538: if (pop @stack eq '&') {
6539: $result=$result>$before?$before:$result;
6540: } else {
6541: $result=$result>$before?$result:$before;
6542: }
6543: } elsif (($chunk eq '&') || ($chunk eq '|')) {
6544: $operand=$chunk;
6545: } else {
6546: my $new=directcondval($chunk);
6547: if ($operand eq '&') {
6548: $result=$result>$new?$new:$result;
6549: } else {
6550: $result=$result>$new?$result:$new;
6551: }
6552: }
6553: }
6554: }
6555: return $result;
6556: }
6557:
6558: # ---------------------------------------------------- Devalidate courseresdata
6559:
6560: sub devalidatecourseresdata {
6561: my ($coursenum,$coursedomain)=@_;
6562: my $hashid=$coursenum.':'.$coursedomain;
6563: &devalidate_cache_new('courseres',$hashid);
6564: }
6565:
6566:
6567: # --------------------------------------------------- Course Resourcedata Query
6568: #
6569: # Parameters:
6570: # $coursenum - Number of the course.
6571: # $coursedomain - Domain at which the course was created.
6572: # Returns:
6573: # A hash of the course parameters along (I think) with timestamps
6574: # and version info.
6575:
6576: sub get_courseresdata {
6577: my ($coursenum,$coursedomain)=@_;
6578: my $coursehom=&homeserver($coursenum,$coursedomain);
6579: my $hashid=$coursenum.':'.$coursedomain;
6580: my ($result,$cached)=&is_cached_new('courseres',$hashid);
6581: my %dumpreply;
6582: unless (defined($cached)) {
6583: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
6584: $result=\%dumpreply;
6585: my ($tmp) = keys(%dumpreply);
6586: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
6587: &do_cache_new('courseres',$hashid,$result,600);
6588: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
6589: return $tmp;
6590: } elsif ($tmp =~ /^(error)/) {
6591: $result=undef;
6592: &do_cache_new('courseres',$hashid,$result,600);
6593: }
6594: }
6595: return $result;
6596: }
6597:
6598: sub devalidateuserresdata {
6599: my ($uname,$udom)=@_;
6600: my $hashid="$udom:$uname";
6601: &devalidate_cache_new('userres',$hashid);
6602: }
6603:
6604: sub get_userresdata {
6605: my ($uname,$udom)=@_;
6606: #most student don\'t have any data set, check if there is some data
6607: if (&EXT_cache_status($udom,$uname)) { return undef; }
6608:
6609: my $hashid="$udom:$uname";
6610: my ($result,$cached)=&is_cached_new('userres',$hashid);
6611: if (!defined($cached)) {
6612: my %resourcedata=&dump('resourcedata',$udom,$uname);
6613: $result=\%resourcedata;
6614: &do_cache_new('userres',$hashid,$result,600);
6615: }
6616: my ($tmp)=keys(%$result);
6617: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
6618: return $result;
6619: }
6620: #error 2 occurs when the .db doesn't exist
6621: if ($tmp!~/error: 2 /) {
6622: &logthis("<font color=\"blue\">WARNING:".
6623: " Trying to get resource data for ".
6624: $uname." at ".$udom.": ".
6625: $tmp."</font>");
6626: } elsif ($tmp=~/error: 2 /) {
6627: #&EXT_cache_set($udom,$uname);
6628: &do_cache_new('userres',$hashid,undef,600);
6629: undef($tmp); # not really an error so don't send it back
6630: }
6631: return $tmp;
6632: }
6633: #----------------------------------------------- resdata - return resource data
6634: # Purpose:
6635: # Return resource data for either users or for a course.
6636: # Parameters:
6637: # $name - Course/user name.
6638: # $domain - Name of the domain the user/course is registered on.
6639: # $type - Type of thing $name is (must be 'course' or 'user'
6640: # @which - Array of names of resources desired.
6641: # Returns:
6642: # The value of the first reasource in @which that is found in the
6643: # resource hash.
6644: # Exceptional Conditions:
6645: # If the $type passed in is not valid (not the string 'course' or
6646: # 'user', an undefined reference is returned.
6647: # If none of the resources are found, an undef is returned
6648: sub resdata {
6649: my ($name,$domain,$type,@which)=@_;
6650: my $result;
6651: if ($type eq 'course') {
6652: $result=&get_courseresdata($name,$domain);
6653: } elsif ($type eq 'user') {
6654: $result=&get_userresdata($name,$domain);
6655: }
6656: if (!ref($result)) { return $result; }
6657: foreach my $item (@which) {
6658: if (defined($result->{$item->[0]})) {
6659: return [$result->{$item->[0]},$item->[1]];
6660: }
6661: }
6662: return undef;
6663: }
6664:
6665: #
6666: # EXT resource caching routines
6667: #
6668:
6669: sub clear_EXT_cache_status {
6670: &delenv('cache.EXT.');
6671: }
6672:
6673: sub EXT_cache_status {
6674: my ($target_domain,$target_user) = @_;
6675: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
6676: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
6677: # We know already the user has no data
6678: return 1;
6679: } else {
6680: return 0;
6681: }
6682: }
6683:
6684: sub EXT_cache_set {
6685: my ($target_domain,$target_user) = @_;
6686: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
6687: #&appenv({$cachename => time});
6688: }
6689:
6690: # --------------------------------------------------------- Value of a Variable
6691: sub EXT {
6692:
6693: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
6694: unless ($varname) { return ''; }
6695: #get real user name/domain, courseid and symb
6696: my $courseid;
6697: my $publicuser;
6698: if ($symbparm) {
6699: $symbparm=&get_symb_from_alias($symbparm);
6700: }
6701: if (!($uname && $udom)) {
6702: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
6703: if (!$symbparm) { $symbparm=$cursymb; }
6704: } else {
6705: $courseid=$env{'request.course.id'};
6706: }
6707: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
6708: my $rest;
6709: if (defined($therest[0])) {
6710: $rest=join('.',@therest);
6711: } else {
6712: $rest='';
6713: }
6714:
6715: my $qualifierrest=$qualifier;
6716: if ($rest) { $qualifierrest.='.'.$rest; }
6717: my $spacequalifierrest=$space;
6718: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
6719: if ($realm eq 'user') {
6720: # --------------------------------------------------------------- user.resource
6721: if ($space eq 'resource') {
6722: if ( (defined($Apache::lonhomework::parsing_a_problem)
6723: || defined($Apache::lonhomework::parsing_a_task))
6724: &&
6725: ($symbparm eq &symbread()) ) {
6726: # if we are in the middle of processing the resource the
6727: # get the value we are planning on committing
6728: if (defined($Apache::lonhomework::results{$qualifierrest})) {
6729: return $Apache::lonhomework::results{$qualifierrest};
6730: } else {
6731: return $Apache::lonhomework::history{$qualifierrest};
6732: }
6733: } else {
6734: my %restored;
6735: if ($publicuser || $env{'request.state'} eq 'construct') {
6736: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
6737: } else {
6738: %restored=&restore($symbparm,$courseid,$udom,$uname);
6739: }
6740: return $restored{$qualifierrest};
6741: }
6742: # ----------------------------------------------------------------- user.access
6743: } elsif ($space eq 'access') {
6744: # FIXME - not supporting calls for a specific user
6745: return &allowed($qualifier,$rest);
6746: # ------------------------------------------ user.preferences, user.environment
6747: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
6748: if (($uname eq $env{'user.name'}) &&
6749: ($udom eq $env{'user.domain'})) {
6750: return $env{join('.',('environment',$qualifierrest))};
6751: } else {
6752: my %returnhash;
6753: if (!$publicuser) {
6754: %returnhash=&userenvironment($udom,$uname,
6755: $qualifierrest);
6756: }
6757: return $returnhash{$qualifierrest};
6758: }
6759: # ----------------------------------------------------------------- user.course
6760: } elsif ($space eq 'course') {
6761: # FIXME - not supporting calls for a specific user
6762: return $env{join('.',('request.course',$qualifier))};
6763: # ------------------------------------------------------------------- user.role
6764: } elsif ($space eq 'role') {
6765: # FIXME - not supporting calls for a specific user
6766: my ($role,$where)=split(/\./,$env{'request.role'});
6767: if ($qualifier eq 'value') {
6768: return $role;
6769: } elsif ($qualifier eq 'extent') {
6770: return $where;
6771: }
6772: # ----------------------------------------------------------------- user.domain
6773: } elsif ($space eq 'domain') {
6774: return $udom;
6775: # ------------------------------------------------------------------- user.name
6776: } elsif ($space eq 'name') {
6777: return $uname;
6778: # ---------------------------------------------------- Any other user namespace
6779: } else {
6780: my %reply;
6781: if (!$publicuser) {
6782: %reply=&get($space,[$qualifierrest],$udom,$uname);
6783: }
6784: return $reply{$qualifierrest};
6785: }
6786: } elsif ($realm eq 'query') {
6787: # ---------------------------------------------- pull stuff out of query string
6788: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
6789: [$spacequalifierrest]);
6790: return $env{'form.'.$spacequalifierrest};
6791: } elsif ($realm eq 'request') {
6792: # ------------------------------------------------------------- request.browser
6793: if ($space eq 'browser') {
6794: if ($qualifier eq 'textremote') {
6795: if (&Apache::lonlocal::mt('textual_remote_display') eq 'on') {
6796: return 1;
6797: } else {
6798: return 0;
6799: }
6800: } else {
6801: return $env{'browser.'.$qualifier};
6802: }
6803: # ------------------------------------------------------------ request.filename
6804: } else {
6805: return $env{'request.'.$spacequalifierrest};
6806: }
6807: } elsif ($realm eq 'course') {
6808: # ---------------------------------------------------------- course.description
6809: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
6810: } elsif ($realm eq 'resource') {
6811:
6812: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
6813: if (!$symbparm) { $symbparm=&symbread(); }
6814: }
6815:
6816: if ($space eq 'title') {
6817: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
6818: return &gettitle($symbparm);
6819: }
6820:
6821: if ($space eq 'map') {
6822: my ($map) = &decode_symb($symbparm);
6823: return &symbread($map);
6824: }
6825: if ($space eq 'filename') {
6826: if ($symbparm) {
6827: return &clutter((&decode_symb($symbparm))[2]);
6828: }
6829: return &hreflocation('',$env{'request.filename'});
6830: }
6831:
6832: my ($section, $group, @groups);
6833: my ($courselevelm,$courselevel);
6834: if ($symbparm && defined($courseid) &&
6835: $courseid eq $env{'request.course.id'}) {
6836:
6837: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
6838:
6839: # ----------------------------------------------------- Cascading lookup scheme
6840: my $symbp=$symbparm;
6841: my $mapp=&deversion((&decode_symb($symbp))[0]);
6842:
6843: my $symbparm=$symbp.'.'.$spacequalifierrest;
6844: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
6845:
6846: if (($env{'user.name'} eq $uname) &&
6847: ($env{'user.domain'} eq $udom)) {
6848: $section=$env{'request.course.sec'};
6849: @groups = split(/:/,$env{'request.course.groups'});
6850: @groups=&sort_course_groups($courseid,@groups);
6851: } else {
6852: if (! defined($usection)) {
6853: $section=&getsection($udom,$uname,$courseid);
6854: } else {
6855: $section = $usection;
6856: }
6857: @groups = &get_users_groups($udom,$uname,$courseid);
6858: }
6859:
6860: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
6861: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
6862: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
6863:
6864: $courselevel=$courseid.'.'.$spacequalifierrest;
6865: my $courselevelr=$courseid.'.'.$symbparm;
6866: $courselevelm=$courseid.'.'.$mapparm;
6867:
6868: # ----------------------------------------------------------- first, check user
6869:
6870: my $userreply=&resdata($uname,$udom,'user',
6871: ([$courselevelr,'resource'],
6872: [$courselevelm,'map' ],
6873: [$courselevel, 'course' ]));
6874: if (defined($userreply)) { return &get_reply($userreply); }
6875:
6876: # ------------------------------------------------ second, check some of course
6877: my $coursereply;
6878: if (@groups > 0) {
6879: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
6880: $mapparm,$spacequalifierrest);
6881: if (defined($coursereply)) { return &get_reply($coursereply); }
6882: }
6883:
6884: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
6885: $env{'course.'.$courseid.'.domain'},
6886: 'course',
6887: ([$seclevelr, 'resource'],
6888: [$seclevelm, 'map' ],
6889: [$seclevel, 'course' ],
6890: [$courselevelr,'resource']));
6891: if (defined($coursereply)) { return &get_reply($coursereply); }
6892:
6893: # ------------------------------------------------------ third, check map parms
6894: my %parmhash=();
6895: my $thisparm='';
6896: if (tie(%parmhash,'GDBM_File',
6897: $env{'request.course.fn'}.'_parms.db',
6898: &GDBM_READER(),0640)) {
6899: $thisparm=$parmhash{$symbparm};
6900: untie(%parmhash);
6901: }
6902: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
6903: }
6904: # ------------------------------------------ fourth, look in resource metadata
6905:
6906: $spacequalifierrest=~s/\./\_/;
6907: my $filename;
6908: if (!$symbparm) { $symbparm=&symbread(); }
6909: if ($symbparm) {
6910: $filename=(&decode_symb($symbparm))[2];
6911: } else {
6912: $filename=$env{'request.filename'};
6913: }
6914: my $metadata=&metadata($filename,$spacequalifierrest);
6915: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
6916: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
6917: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
6918:
6919: # ---------------------------------------------- fourth, look in rest of course
6920: if ($symbparm && defined($courseid) &&
6921: $courseid eq $env{'request.course.id'}) {
6922: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
6923: $env{'course.'.$courseid.'.domain'},
6924: 'course',
6925: ([$courselevelm,'map' ],
6926: [$courselevel, 'course']));
6927: if (defined($coursereply)) { return &get_reply($coursereply); }
6928: }
6929: # ------------------------------------------------------------------ Cascade up
6930: unless ($space eq '0') {
6931: my @parts=split(/_/,$space);
6932: my $id=pop(@parts);
6933: my $part=join('_',@parts);
6934: if ($part eq '') { $part='0'; }
6935: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
6936: $symbparm,$udom,$uname,$section,1);
6937: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
6938: }
6939: if ($recurse) { return undef; }
6940: my $pack_def=&packages_tab_default($filename,$varname);
6941: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
6942: # ---------------------------------------------------- Any other user namespace
6943: } elsif ($realm eq 'environment') {
6944: # ----------------------------------------------------------------- environment
6945: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
6946: return $env{'environment.'.$spacequalifierrest};
6947: } else {
6948: if ($uname eq 'anonymous' && $udom eq '') {
6949: return '';
6950: }
6951: my %returnhash=&userenvironment($udom,$uname,
6952: $spacequalifierrest);
6953: return $returnhash{$spacequalifierrest};
6954: }
6955: } elsif ($realm eq 'system') {
6956: # ----------------------------------------------------------------- system.time
6957: if ($space eq 'time') {
6958: return time;
6959: }
6960: } elsif ($realm eq 'server') {
6961: # ----------------------------------------------------------------- system.time
6962: if ($space eq 'name') {
6963: return $ENV{'SERVER_NAME'};
6964: }
6965: }
6966: return '';
6967: }
6968:
6969: sub get_reply {
6970: my ($reply_value) = @_;
6971: if (ref($reply_value) eq 'ARRAY') {
6972: if (wantarray) {
6973: return @$reply_value;
6974: }
6975: return $reply_value->[0];
6976: } else {
6977: return $reply_value;
6978: }
6979: }
6980:
6981: sub check_group_parms {
6982: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
6983: my @groupitems = ();
6984: my $resultitem;
6985: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
6986: foreach my $group (@{$groups}) {
6987: foreach my $level (@levels) {
6988: my $item = $courseid.'.['.$group.'].'.$level->[0];
6989: push(@groupitems,[$item,$level->[1]]);
6990: }
6991: }
6992: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
6993: $env{'course.'.$courseid.'.domain'},
6994: 'course',@groupitems);
6995: return $coursereply;
6996: }
6997:
6998: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
6999: my ($courseid,@groups) = @_;
7000: @groups = sort(@groups);
7001: return @groups;
7002: }
7003:
7004: sub packages_tab_default {
7005: my ($uri,$varname)=@_;
7006: my (undef,$part,$name)=split(/\./,$varname);
7007:
7008: my (@extension,@specifics,$do_default);
7009: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
7010: my ($pack_type,$pack_part)=split(/_/,$package,2);
7011: if ($pack_type eq 'default') {
7012: $do_default=1;
7013: } elsif ($pack_type eq 'extension') {
7014: push(@extension,[$package,$pack_type,$pack_part]);
7015: } elsif ($pack_part eq $part || $pack_type eq 'part') {
7016: # only look at packages defaults for packages that this id is
7017: push(@specifics,[$package,$pack_type,$pack_part]);
7018: }
7019: }
7020: # first look for a package that matches the requested part id
7021: foreach my $package (@specifics) {
7022: my (undef,$pack_type,$pack_part)=@{$package};
7023: next if ($pack_part ne $part);
7024: if (defined($packagetab{"$pack_type&$name&default"})) {
7025: return $packagetab{"$pack_type&$name&default"};
7026: }
7027: }
7028: # look for any possible matching non extension_ package
7029: foreach my $package (@specifics) {
7030: my (undef,$pack_type,$pack_part)=@{$package};
7031: if (defined($packagetab{"$pack_type&$name&default"})) {
7032: return $packagetab{"$pack_type&$name&default"};
7033: }
7034: if ($pack_type eq 'part') { $pack_part='0'; }
7035: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
7036: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
7037: }
7038: }
7039: # look for any posible extension_ match
7040: foreach my $package (@extension) {
7041: my ($package,$pack_type)=@{$package};
7042: if (defined($packagetab{"$pack_type&$name&default"})) {
7043: return $packagetab{"$pack_type&$name&default"};
7044: }
7045: if (defined($packagetab{$package."&$name&default"})) {
7046: return $packagetab{$package."&$name&default"};
7047: }
7048: }
7049: # look for a global default setting
7050: if ($do_default && defined($packagetab{"default&$name&default"})) {
7051: return $packagetab{"default&$name&default"};
7052: }
7053: return undef;
7054: }
7055:
7056: sub add_prefix_and_part {
7057: my ($prefix,$part)=@_;
7058: my $keyroot;
7059: if (defined($prefix) && $prefix !~ /^__/) {
7060: # prefix that has a part already
7061: $keyroot=$prefix;
7062: } elsif (defined($prefix)) {
7063: # prefix that is missing a part
7064: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
7065: } else {
7066: # no prefix at all
7067: if (defined($part)) { $keyroot='_'.$part; }
7068: }
7069: return $keyroot;
7070: }
7071:
7072: # ---------------------------------------------------------------- Get metadata
7073:
7074: my %metaentry;
7075: sub metadata {
7076: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
7077: $uri=&declutter($uri);
7078: # if it is a non metadata possible uri return quickly
7079: if (($uri eq '') ||
7080: (($uri =~ m|^/*adm/|) &&
7081: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
7082: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) ) {
7083: return undef;
7084: }
7085: if (($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/})
7086: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
7087: return undef;
7088: }
7089: my $filename=$uri;
7090: $uri=~s/\.meta$//;
7091: #
7092: # Is the metadata already cached?
7093: # Look at timestamp of caching
7094: # Everything is cached by the main uri, libraries are never directly cached
7095: #
7096: if (!defined($liburi)) {
7097: my ($result,$cached)=&is_cached_new('meta',$uri);
7098: if (defined($cached)) { return $result->{':'.$what}; }
7099: }
7100: {
7101: #
7102: # Is this a recursive call for a library?
7103: #
7104: # if (! exists($metacache{$uri})) {
7105: # $metacache{$uri}={};
7106: # }
7107: my $cachetime = 60*60;
7108: if ($liburi) {
7109: $liburi=&declutter($liburi);
7110: $filename=$liburi;
7111: } else {
7112: &devalidate_cache_new('meta',$uri);
7113: undef(%metaentry);
7114: }
7115: my %metathesekeys=();
7116: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
7117: my $metastring;
7118: if ($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/}) {
7119: my $which = &hreflocation('','/'.($liburi || $uri));
7120: $metastring =
7121: &Apache::lonnet::ssi_body($which,
7122: ('grade_target' => 'meta'));
7123: $cachetime = 1; # only want this cached in the child not long term
7124: } elsif ($uri !~ m -^(editupload)/-) {
7125: my $file=&filelocation('',&clutter($filename));
7126: #push(@{$metaentry{$uri.'.file'}},$file);
7127: $metastring=&getfile($file);
7128: }
7129: my $parser=HTML::LCParser->new(\$metastring);
7130: my $token;
7131: undef %metathesekeys;
7132: while ($token=$parser->get_token) {
7133: if ($token->[0] eq 'S') {
7134: if (defined($token->[2]->{'package'})) {
7135: #
7136: # This is a package - get package info
7137: #
7138: my $package=$token->[2]->{'package'};
7139: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
7140: if (defined($token->[2]->{'id'})) {
7141: $keyroot.='_'.$token->[2]->{'id'};
7142: }
7143: if ($metaentry{':packages'}) {
7144: $metaentry{':packages'}.=','.$package.$keyroot;
7145: } else {
7146: $metaentry{':packages'}=$package.$keyroot;
7147: }
7148: foreach my $pack_entry (keys(%packagetab)) {
7149: my $part=$keyroot;
7150: $part=~s/^\_//;
7151: if ($pack_entry=~/^\Q$package\E\&/ ||
7152: $pack_entry=~/^\Q$package\E_0\&/) {
7153: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
7154: # ignore package.tab specified default values
7155: # here &package_tab_default() will fetch those
7156: if ($subp eq 'default') { next; }
7157: my $value=$packagetab{$pack_entry};
7158: my $unikey;
7159: if ($pack =~ /_0$/) {
7160: $unikey='parameter_0_'.$name;
7161: $part=0;
7162: } else {
7163: $unikey='parameter'.$keyroot.'_'.$name;
7164: }
7165: if ($subp eq 'display') {
7166: $value.=' [Part: '.$part.']';
7167: }
7168: $metaentry{':'.$unikey.'.part'}=$part;
7169: $metathesekeys{$unikey}=1;
7170: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
7171: $metaentry{':'.$unikey.'.'.$subp}=$value;
7172: }
7173: if (defined($metaentry{':'.$unikey.'.default'})) {
7174: $metaentry{':'.$unikey}=
7175: $metaentry{':'.$unikey.'.default'};
7176: }
7177: }
7178: }
7179: } else {
7180: #
7181: # This is not a package - some other kind of start tag
7182: #
7183: my $entry=$token->[1];
7184: my $unikey;
7185: if ($entry eq 'import') {
7186: $unikey='';
7187: } else {
7188: $unikey=$entry;
7189: }
7190: $unikey.=&add_prefix_and_part($prefix,$token->[2]->{'part'});
7191:
7192: if (defined($token->[2]->{'id'})) {
7193: $unikey.='_'.$token->[2]->{'id'};
7194: }
7195:
7196: if ($entry eq 'import') {
7197: #
7198: # Importing a library here
7199: #
7200: if ($depthcount<20) {
7201: my $location=$parser->get_text('/import');
7202: my $dir=$filename;
7203: $dir=~s|[^/]*$||;
7204: $location=&filelocation($dir,$location);
7205: my $metadata =
7206: &metadata($uri,'keys', $location,$unikey,
7207: $depthcount+1);
7208: foreach my $meta (split(',',$metadata)) {
7209: $metaentry{':'.$meta}=$metaentry{':'.$meta};
7210: $metathesekeys{$meta}=1;
7211: }
7212: }
7213: } else {
7214:
7215: if (defined($token->[2]->{'name'})) {
7216: $unikey.='_'.$token->[2]->{'name'};
7217: }
7218: $metathesekeys{$unikey}=1;
7219: foreach my $param (@{$token->[3]}) {
7220: $metaentry{':'.$unikey.'.'.$param} =
7221: $token->[2]->{$param};
7222: }
7223: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
7224: my $default=$metaentry{':'.$unikey.'.default'};
7225: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
7226: # only ws inside the tag, and not in default, so use default
7227: # as value
7228: $metaentry{':'.$unikey}=$default;
7229: } elsif ( $internaltext =~ /\S/ ) {
7230: # something interesting inside the tag
7231: $metaentry{':'.$unikey}=$internaltext;
7232: } else {
7233: # no interesting values, don't set a default
7234: }
7235: # end of not-a-package not-a-library import
7236: }
7237: # end of not-a-package start tag
7238: }
7239: # the next is the end of "start tag"
7240: }
7241: }
7242: my ($extension) = ($uri =~ /\.(\w+)$/);
7243: $extension = lc($extension);
7244: if ($extension eq 'htm') { $extension='html'; }
7245:
7246: foreach my $key (keys(%packagetab)) {
7247: #no specific packages #how's our extension
7248: if ($key!~/^extension_\Q$extension\E&/) { next; }
7249: &metadata_create_package_def($uri,$key,'extension_'.$extension,
7250: \%metathesekeys);
7251: }
7252:
7253: if (!exists($metaentry{':packages'})
7254: || $packagetab{"import_defaults&extension_$extension"}) {
7255: foreach my $key (keys(%packagetab)) {
7256: #no specific packages well let's get default then
7257: if ($key!~/^default&/) { next; }
7258: &metadata_create_package_def($uri,$key,'default',
7259: \%metathesekeys);
7260: }
7261: }
7262: # are there custom rights to evaluate
7263: if ($metaentry{':copyright'} eq 'custom') {
7264:
7265: #
7266: # Importing a rights file here
7267: #
7268: unless ($depthcount) {
7269: my $location=$metaentry{':customdistributionfile'};
7270: my $dir=$filename;
7271: $dir=~s|[^/]*$||;
7272: $location=&filelocation($dir,$location);
7273: my $rights_metadata =
7274: &metadata($uri,'keys',$location,'_rights',
7275: $depthcount+1);
7276: foreach my $rights (split(',',$rights_metadata)) {
7277: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
7278: $metathesekeys{$rights}=1;
7279: }
7280: }
7281: }
7282: # uniqifiy package listing
7283: my %seen;
7284: my @uniq_packages =
7285: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
7286: $metaentry{':packages'} = join(',',@uniq_packages);
7287:
7288: $metaentry{':keys'} = join(',',keys(%metathesekeys));
7289: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
7290: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
7291: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
7292: # this is the end of "was not already recently cached
7293: }
7294: return $metaentry{':'.$what};
7295: }
7296:
7297: sub metadata_create_package_def {
7298: my ($uri,$key,$package,$metathesekeys)=@_;
7299: my ($pack,$name,$subp)=split(/\&/,$key);
7300: if ($subp eq 'default') { next; }
7301:
7302: if (defined($metaentry{':packages'})) {
7303: $metaentry{':packages'}.=','.$package;
7304: } else {
7305: $metaentry{':packages'}=$package;
7306: }
7307: my $value=$packagetab{$key};
7308: my $unikey;
7309: $unikey='parameter_0_'.$name;
7310: $metaentry{':'.$unikey.'.part'}=0;
7311: $$metathesekeys{$unikey}=1;
7312: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
7313: $metaentry{':'.$unikey.'.'.$subp}=$value;
7314: }
7315: if (defined($metaentry{':'.$unikey.'.default'})) {
7316: $metaentry{':'.$unikey}=
7317: $metaentry{':'.$unikey.'.default'};
7318: }
7319: }
7320:
7321: sub metadata_generate_part0 {
7322: my ($metadata,$metacache,$uri) = @_;
7323: my %allnames;
7324: foreach my $metakey (keys(%$metadata)) {
7325: if ($metakey=~/^parameter\_(.*)/) {
7326: my $part=$$metacache{':'.$metakey.'.part'};
7327: my $name=$$metacache{':'.$metakey.'.name'};
7328: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
7329: $allnames{$name}=$part;
7330: }
7331: }
7332: }
7333: foreach my $name (keys(%allnames)) {
7334: $$metadata{"parameter_0_$name"}=1;
7335: my $key=":parameter_0_$name";
7336: $$metacache{"$key.part"}='0';
7337: $$metacache{"$key.name"}=$name;
7338: $$metacache{"$key.type"}=$$metacache{':parameter_'.
7339: $allnames{$name}.'_'.$name.
7340: '.type'};
7341: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
7342: '.display'};
7343: my $expr='[Part: '.$allnames{$name}.']';
7344: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
7345: $$metacache{"$key.display"}=$olddis;
7346: }
7347: }
7348:
7349: # ------------------------------------------------------ Devalidate title cache
7350:
7351: sub devalidate_title_cache {
7352: my ($url)=@_;
7353: if (!$env{'request.course.id'}) { return; }
7354: my $symb=&symbread($url);
7355: if (!$symb) { return; }
7356: my $key=$env{'request.course.id'}."\0".$symb;
7357: &devalidate_cache_new('title',$key);
7358: }
7359:
7360: # ------------------------------------------------- Get the title of a resource
7361:
7362: sub gettitle {
7363: my $urlsymb=shift;
7364: my $symb=&symbread($urlsymb);
7365: if ($symb) {
7366: my $key=$env{'request.course.id'}."\0".$symb;
7367: my ($result,$cached)=&is_cached_new('title',$key);
7368: if (defined($cached)) {
7369: return $result;
7370: }
7371: my ($map,$resid,$url)=&decode_symb($symb);
7372: my $title='';
7373: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
7374: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
7375: } else {
7376: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7377: &GDBM_READER(),0640)) {
7378: my $mapid=$bighash{'map_pc_'.&clutter($map)};
7379: $title=$bighash{'title_'.$mapid.'.'.$resid};
7380: untie(%bighash);
7381: }
7382: }
7383: $title=~s/\&colon\;/\:/gs;
7384: if ($title) {
7385: return &do_cache_new('title',$key,$title,600);
7386: }
7387: $urlsymb=$url;
7388: }
7389: my $title=&metadata($urlsymb,'title');
7390: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
7391: return $title;
7392: }
7393:
7394: sub get_slot {
7395: my ($which,$cnum,$cdom)=@_;
7396: if (!$cnum || !$cdom) {
7397: (undef,my $courseid)=&whichuser();
7398: $cdom=$env{'course.'.$courseid.'.domain'};
7399: $cnum=$env{'course.'.$courseid.'.num'};
7400: }
7401: my $key=join("\0",'slots',$cdom,$cnum,$which);
7402: my %slotinfo;
7403: if (exists($remembered{$key})) {
7404: $slotinfo{$which} = $remembered{$key};
7405: } else {
7406: %slotinfo=&get('slots',[$which],$cdom,$cnum);
7407: &Apache::lonhomework::showhash(%slotinfo);
7408: my ($tmp)=keys(%slotinfo);
7409: if ($tmp=~/^error:/) { return (); }
7410: $remembered{$key} = $slotinfo{$which};
7411: }
7412: if (ref($slotinfo{$which}) eq 'HASH') {
7413: return %{$slotinfo{$which}};
7414: }
7415: return $slotinfo{$which};
7416: }
7417: # ------------------------------------------------- Update symbolic store links
7418:
7419: sub symblist {
7420: my ($mapname,%newhash)=@_;
7421: $mapname=&deversion(&declutter($mapname));
7422: my %hash;
7423: if (($env{'request.course.fn'}) && (%newhash)) {
7424: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
7425: &GDBM_WRCREAT(),0640)) {
7426: foreach my $url (keys %newhash) {
7427: next if ($url eq 'last_known'
7428: && $env{'form.no_update_last_known'});
7429: $hash{declutter($url)}=&encode_symb($mapname,
7430: $newhash{$url}->[1],
7431: $newhash{$url}->[0]);
7432: }
7433: if (untie(%hash)) {
7434: return 'ok';
7435: }
7436: }
7437: }
7438: return 'error';
7439: }
7440:
7441: # --------------------------------------------------------------- Verify a symb
7442:
7443: sub symbverify {
7444: my ($symb,$thisurl)=@_;
7445: my $thisfn=$thisurl;
7446: $thisfn=&declutter($thisfn);
7447: # direct jump to resource in page or to a sequence - will construct own symbs
7448: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
7449: # check URL part
7450: my ($map,$resid,$url)=&decode_symb($symb);
7451:
7452: unless ($url eq $thisfn) { return 0; }
7453:
7454: $symb=&symbclean($symb);
7455: $thisurl=&deversion($thisurl);
7456: $thisfn=&deversion($thisfn);
7457:
7458: my %bighash;
7459: my $okay=0;
7460:
7461: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7462: &GDBM_READER(),0640)) {
7463: my $ids=$bighash{'ids_'.&clutter($thisurl)};
7464: unless ($ids) {
7465: $ids=$bighash{'ids_/'.$thisurl};
7466: }
7467: if ($ids) {
7468: # ------------------------------------------------------------------- Has ID(s)
7469: foreach my $id (split(/\,/,$ids)) {
7470: my ($mapid,$resid)=split(/\./,$id);
7471: if (
7472: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
7473: eq $symb) {
7474: if (($env{'request.role.adv'}) ||
7475: $bighash{'encrypted_'.$id} eq $env{'request.enc'}) {
7476: $okay=1;
7477: }
7478: }
7479: }
7480: }
7481: untie(%bighash);
7482: }
7483: return $okay;
7484: }
7485:
7486: # --------------------------------------------------------------- Clean-up symb
7487:
7488: sub symbclean {
7489: my $symb=shift;
7490: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
7491: # remove version from map
7492: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
7493:
7494: # remove version from URL
7495: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
7496:
7497: # remove wrapper
7498:
7499: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
7500: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
7501: return $symb;
7502: }
7503:
7504: # ---------------------------------------------- Split symb to find map and url
7505:
7506: sub encode_symb {
7507: my ($map,$resid,$url)=@_;
7508: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
7509: }
7510:
7511: sub decode_symb {
7512: my $symb=shift;
7513: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
7514: my ($map,$resid,$url)=split(/___/,$symb);
7515: return (&fixversion($map),$resid,&fixversion($url));
7516: }
7517:
7518: sub fixversion {
7519: my $fn=shift;
7520: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
7521: my %bighash;
7522: my $uri=&clutter($fn);
7523: my $key=$env{'request.course.id'}.'_'.$uri;
7524: # is this cached?
7525: my ($result,$cached)=&is_cached_new('courseresversion',$key);
7526: if (defined($cached)) { return $result; }
7527: # unfortunately not cached, or expired
7528: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7529: &GDBM_READER(),0640)) {
7530: if ($bighash{'version_'.$uri}) {
7531: my $version=$bighash{'version_'.$uri};
7532: unless (($version eq 'mostrecent') ||
7533: ($version==&getversion($uri))) {
7534: $uri=~s/\.(\w+)$/\.$version\.$1/;
7535: }
7536: }
7537: untie %bighash;
7538: }
7539: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
7540: }
7541:
7542: sub deversion {
7543: my $url=shift;
7544: $url=~s/\.\d+\.(\w+)$/\.$1/;
7545: return $url;
7546: }
7547:
7548: # ------------------------------------------------------ Return symb list entry
7549:
7550: sub symbread {
7551: my ($thisfn,$donotrecurse)=@_;
7552: my $cache_str='request.symbread.cached.'.$thisfn;
7553: if (defined($env{$cache_str})) { return $env{$cache_str}; }
7554: # no filename provided? try from environment
7555: unless ($thisfn) {
7556: if ($env{'request.symb'}) {
7557: return $env{$cache_str}=&symbclean($env{'request.symb'});
7558: }
7559: $thisfn=$env{'request.filename'};
7560: }
7561: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
7562: # is that filename actually a symb? Verify, clean, and return
7563: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
7564: if (&symbverify($thisfn,$1)) {
7565: return $env{$cache_str}=&symbclean($thisfn);
7566: }
7567: }
7568: $thisfn=declutter($thisfn);
7569: my %hash;
7570: my %bighash;
7571: my $syval='';
7572: if (($env{'request.course.fn'}) && ($thisfn)) {
7573: my $targetfn = $thisfn;
7574: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
7575: $targetfn = 'adm/wrapper/'.$thisfn;
7576: }
7577: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
7578: $targetfn=$1;
7579: }
7580: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
7581: &GDBM_READER(),0640)) {
7582: $syval=$hash{$targetfn};
7583: untie(%hash);
7584: }
7585: # ---------------------------------------------------------- There was an entry
7586: if ($syval) {
7587: #unless ($syval=~/\_\d+$/) {
7588: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
7589: #&appenv({'request.ambiguous' => $thisfn});
7590: #return $env{$cache_str}='';
7591: #}
7592: #$syval.=$1;
7593: #}
7594: } else {
7595: # ------------------------------------------------------- Was not in symb table
7596: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7597: &GDBM_READER(),0640)) {
7598: # ---------------------------------------------- Get ID(s) for current resource
7599: my $ids=$bighash{'ids_'.&clutter($thisfn)};
7600: unless ($ids) {
7601: $ids=$bighash{'ids_/'.$thisfn};
7602: }
7603: unless ($ids) {
7604: # alias?
7605: $ids=$bighash{'mapalias_'.$thisfn};
7606: }
7607: if ($ids) {
7608: # ------------------------------------------------------------------- Has ID(s)
7609: my @possibilities=split(/\,/,$ids);
7610: if ($#possibilities==0) {
7611: # ----------------------------------------------- There is only one possibility
7612: my ($mapid,$resid)=split(/\./,$ids);
7613: $syval=&encode_symb($bighash{'map_id_'.$mapid},
7614: $resid,$thisfn);
7615: } elsif (!$donotrecurse) {
7616: # ------------------------------------------ There is more than one possibility
7617: my $realpossible=0;
7618: foreach my $id (@possibilities) {
7619: my $file=$bighash{'src_'.$id};
7620: if (&allowed('bre',$file)) {
7621: my ($mapid,$resid)=split(/\./,$id);
7622: if ($bighash{'map_type_'.$mapid} ne 'page') {
7623: $realpossible++;
7624: $syval=&encode_symb($bighash{'map_id_'.$mapid},
7625: $resid,$thisfn);
7626: }
7627: }
7628: }
7629: if ($realpossible!=1) { $syval=''; }
7630: } else {
7631: $syval='';
7632: }
7633: }
7634: untie(%bighash)
7635: }
7636: }
7637: if ($syval) {
7638: return $env{$cache_str}=$syval;
7639: }
7640: }
7641: &appenv({'request.ambiguous' => $thisfn});
7642: return $env{$cache_str}='';
7643: }
7644:
7645: # ---------------------------------------------------------- Return random seed
7646:
7647: sub numval {
7648: my $txt=shift;
7649: $txt=~tr/A-J/0-9/;
7650: $txt=~tr/a-j/0-9/;
7651: $txt=~tr/K-T/0-9/;
7652: $txt=~tr/k-t/0-9/;
7653: $txt=~tr/U-Z/0-5/;
7654: $txt=~tr/u-z/0-5/;
7655: $txt=~s/\D//g;
7656: if ($_64bit) { if ($txt > 2**32) { return -1; } }
7657: return int($txt);
7658: }
7659:
7660: sub numval2 {
7661: my $txt=shift;
7662: $txt=~tr/A-J/0-9/;
7663: $txt=~tr/a-j/0-9/;
7664: $txt=~tr/K-T/0-9/;
7665: $txt=~tr/k-t/0-9/;
7666: $txt=~tr/U-Z/0-5/;
7667: $txt=~tr/u-z/0-5/;
7668: $txt=~s/\D//g;
7669: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
7670: my $total;
7671: foreach my $val (@txts) { $total+=$val; }
7672: if ($_64bit) { if ($total > 2**32) { return -1; } }
7673: return int($total);
7674: }
7675:
7676: sub numval3 {
7677: use integer;
7678: my $txt=shift;
7679: $txt=~tr/A-J/0-9/;
7680: $txt=~tr/a-j/0-9/;
7681: $txt=~tr/K-T/0-9/;
7682: $txt=~tr/k-t/0-9/;
7683: $txt=~tr/U-Z/0-5/;
7684: $txt=~tr/u-z/0-5/;
7685: $txt=~s/\D//g;
7686: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
7687: my $total;
7688: foreach my $val (@txts) { $total+=$val; }
7689: if ($_64bit) { $total=(($total<<32)>>32); }
7690: return $total;
7691: }
7692:
7693: sub digest {
7694: my ($data)=@_;
7695: my $digest=&Digest::MD5::md5($data);
7696: my ($a,$b,$c,$d)=unpack("iiii",$digest);
7697: my ($e,$f);
7698: {
7699: use integer;
7700: $e=($a+$b);
7701: $f=($c+$d);
7702: if ($_64bit) {
7703: $e=(($e<<32)>>32);
7704: $f=(($f<<32)>>32);
7705: }
7706: }
7707: if (wantarray) {
7708: return ($e,$f);
7709: } else {
7710: my $g;
7711: {
7712: use integer;
7713: $g=($e+$f);
7714: if ($_64bit) {
7715: $g=(($g<<32)>>32);
7716: }
7717: }
7718: return $g;
7719: }
7720: }
7721:
7722: sub latest_rnd_algorithm_id {
7723: return '64bit5';
7724: }
7725:
7726: sub get_rand_alg {
7727: my ($courseid)=@_;
7728: if (!$courseid) { $courseid=(&whichuser())[1]; }
7729: if ($courseid) {
7730: return $env{"course.$courseid.rndseed"};
7731: }
7732: return &latest_rnd_algorithm_id();
7733: }
7734:
7735: sub validCODE {
7736: my ($CODE)=@_;
7737: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
7738: return 0;
7739: }
7740:
7741: sub getCODE {
7742: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
7743: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
7744: defined($Apache::lonhomework::parsing_a_task) ) &&
7745: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
7746: return $Apache::lonhomework::history{'resource.CODE'};
7747: }
7748: return undef;
7749: }
7750:
7751: sub rndseed {
7752: my ($symb,$courseid,$domain,$username)=@_;
7753: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
7754: if (!defined($symb)) {
7755: unless ($symb=$wsymb) { return time; }
7756: }
7757: if (!$courseid) { $courseid=$wcourseid; }
7758: if (!$domain) { $domain=$wdomain; }
7759: if (!$username) { $username=$wusername }
7760: my $which=&get_rand_alg();
7761:
7762: if (defined(&getCODE())) {
7763: if ($which eq '64bit5') {
7764: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
7765: } elsif ($which eq '64bit4') {
7766: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
7767: } else {
7768: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
7769: }
7770: } elsif ($which eq '64bit5') {
7771: return &rndseed_64bit5($symb,$courseid,$domain,$username);
7772: } elsif ($which eq '64bit4') {
7773: return &rndseed_64bit4($symb,$courseid,$domain,$username);
7774: } elsif ($which eq '64bit3') {
7775: return &rndseed_64bit3($symb,$courseid,$domain,$username);
7776: } elsif ($which eq '64bit2') {
7777: return &rndseed_64bit2($symb,$courseid,$domain,$username);
7778: } elsif ($which eq '64bit') {
7779: return &rndseed_64bit($symb,$courseid,$domain,$username);
7780: }
7781: return &rndseed_32bit($symb,$courseid,$domain,$username);
7782: }
7783:
7784: sub rndseed_32bit {
7785: my ($symb,$courseid,$domain,$username)=@_;
7786: {
7787: use integer;
7788: my $symbchck=unpack("%32C*",$symb) << 27;
7789: my $symbseed=numval($symb) << 22;
7790: my $namechck=unpack("%32C*",$username) << 17;
7791: my $nameseed=numval($username) << 12;
7792: my $domainseed=unpack("%32C*",$domain) << 7;
7793: my $courseseed=unpack("%32C*",$courseid);
7794: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
7795: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7796: #&logthis("rndseed :$num:$symb");
7797: if ($_64bit) { $num=(($num<<32)>>32); }
7798: return $num;
7799: }
7800: }
7801:
7802: sub rndseed_64bit {
7803: my ($symb,$courseid,$domain,$username)=@_;
7804: {
7805: use integer;
7806: my $symbchck=unpack("%32S*",$symb) << 21;
7807: my $symbseed=numval($symb) << 10;
7808: my $namechck=unpack("%32S*",$username);
7809:
7810: my $nameseed=numval($username) << 21;
7811: my $domainseed=unpack("%32S*",$domain) << 10;
7812: my $courseseed=unpack("%32S*",$courseid);
7813:
7814: my $num1=$symbchck+$symbseed+$namechck;
7815: my $num2=$nameseed+$domainseed+$courseseed;
7816: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7817: #&logthis("rndseed :$num:$symb");
7818: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7819: return "$num1,$num2";
7820: }
7821: }
7822:
7823: sub rndseed_64bit2 {
7824: my ($symb,$courseid,$domain,$username)=@_;
7825: {
7826: use integer;
7827: # strings need to be an even # of cahracters long, it it is odd the
7828: # last characters gets thrown away
7829: my $symbchck=unpack("%32S*",$symb.' ') << 21;
7830: my $symbseed=numval($symb) << 10;
7831: my $namechck=unpack("%32S*",$username.' ');
7832:
7833: my $nameseed=numval($username) << 21;
7834: my $domainseed=unpack("%32S*",$domain.' ') << 10;
7835: my $courseseed=unpack("%32S*",$courseid.' ');
7836:
7837: my $num1=$symbchck+$symbseed+$namechck;
7838: my $num2=$nameseed+$domainseed+$courseseed;
7839: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7840: #&logthis("rndseed :$num:$symb");
7841: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7842: return "$num1,$num2";
7843: }
7844: }
7845:
7846: sub rndseed_64bit3 {
7847: my ($symb,$courseid,$domain,$username)=@_;
7848: {
7849: use integer;
7850: # strings need to be an even # of cahracters long, it it is odd the
7851: # last characters gets thrown away
7852: my $symbchck=unpack("%32S*",$symb.' ') << 21;
7853: my $symbseed=numval2($symb) << 10;
7854: my $namechck=unpack("%32S*",$username.' ');
7855:
7856: my $nameseed=numval2($username) << 21;
7857: my $domainseed=unpack("%32S*",$domain.' ') << 10;
7858: my $courseseed=unpack("%32S*",$courseid.' ');
7859:
7860: my $num1=$symbchck+$symbseed+$namechck;
7861: my $num2=$nameseed+$domainseed+$courseseed;
7862: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7863: #&logthis("rndseed :$num1:$num2:$_64bit");
7864: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7865:
7866: return "$num1:$num2";
7867: }
7868: }
7869:
7870: sub rndseed_64bit4 {
7871: my ($symb,$courseid,$domain,$username)=@_;
7872: {
7873: use integer;
7874: # strings need to be an even # of cahracters long, it it is odd the
7875: # last characters gets thrown away
7876: my $symbchck=unpack("%32S*",$symb.' ') << 21;
7877: my $symbseed=numval3($symb) << 10;
7878: my $namechck=unpack("%32S*",$username.' ');
7879:
7880: my $nameseed=numval3($username) << 21;
7881: my $domainseed=unpack("%32S*",$domain.' ') << 10;
7882: my $courseseed=unpack("%32S*",$courseid.' ');
7883:
7884: my $num1=$symbchck+$symbseed+$namechck;
7885: my $num2=$nameseed+$domainseed+$courseseed;
7886: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7887: #&logthis("rndseed :$num1:$num2:$_64bit");
7888: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7889:
7890: return "$num1:$num2";
7891: }
7892: }
7893:
7894: sub rndseed_64bit5 {
7895: my ($symb,$courseid,$domain,$username)=@_;
7896: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
7897: return "$num1:$num2";
7898: }
7899:
7900: sub rndseed_CODE_64bit {
7901: my ($symb,$courseid,$domain,$username)=@_;
7902: {
7903: use integer;
7904: my $symbchck=unpack("%32S*",$symb.' ') << 16;
7905: my $symbseed=numval2($symb);
7906: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
7907: my $CODEseed=numval(&getCODE());
7908: my $courseseed=unpack("%32S*",$courseid.' ');
7909: my $num1=$symbseed+$CODEchck;
7910: my $num2=$CODEseed+$courseseed+$symbchck;
7911: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
7912: #&logthis("rndseed :$num1:$num2:$symb");
7913: if ($_64bit) { $num1=(($num1<<32)>>32); }
7914: if ($_64bit) { $num2=(($num2<<32)>>32); }
7915: return "$num1:$num2";
7916: }
7917: }
7918:
7919: sub rndseed_CODE_64bit4 {
7920: my ($symb,$courseid,$domain,$username)=@_;
7921: {
7922: use integer;
7923: my $symbchck=unpack("%32S*",$symb.' ') << 16;
7924: my $symbseed=numval3($symb);
7925: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
7926: my $CODEseed=numval3(&getCODE());
7927: my $courseseed=unpack("%32S*",$courseid.' ');
7928: my $num1=$symbseed+$CODEchck;
7929: my $num2=$CODEseed+$courseseed+$symbchck;
7930: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
7931: #&logthis("rndseed :$num1:$num2:$symb");
7932: if ($_64bit) { $num1=(($num1<<32)>>32); }
7933: if ($_64bit) { $num2=(($num2<<32)>>32); }
7934: return "$num1:$num2";
7935: }
7936: }
7937:
7938: sub rndseed_CODE_64bit5 {
7939: my ($symb,$courseid,$domain,$username)=@_;
7940: my $code = &getCODE();
7941: my ($num1,$num2)=&digest("$symb,$courseid,$code");
7942: return "$num1:$num2";
7943: }
7944:
7945: sub setup_random_from_rndseed {
7946: my ($rndseed)=@_;
7947: if ($rndseed =~/([,:])/) {
7948: my ($num1,$num2)=split(/[,:]/,$rndseed);
7949: &Math::Random::random_set_seed(abs($num1),abs($num2));
7950: } else {
7951: &Math::Random::random_set_seed_from_phrase($rndseed);
7952: }
7953: }
7954:
7955: sub latest_receipt_algorithm_id {
7956: return 'receipt3';
7957: }
7958:
7959: sub recunique {
7960: my $fucourseid=shift;
7961: my $unique;
7962: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
7963: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
7964: $unique=$env{"course.$fucourseid.internal.encseed"};
7965: } else {
7966: $unique=$perlvar{'lonReceipt'};
7967: }
7968: return unpack("%32C*",$unique);
7969: }
7970:
7971: sub recprefix {
7972: my $fucourseid=shift;
7973: my $prefix;
7974: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
7975: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
7976: $prefix=$env{"course.$fucourseid.internal.encpref"};
7977: } else {
7978: $prefix=$perlvar{'lonHostID'};
7979: }
7980: return unpack("%32C*",$prefix);
7981: }
7982:
7983: sub ireceipt {
7984: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
7985:
7986: my $return =&recprefix($fucourseid).'-';
7987:
7988: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
7989: $env{'request.state'} eq 'construct') {
7990: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
7991: return $return;
7992: }
7993:
7994: my $cuname=unpack("%32C*",$funame);
7995: my $cudom=unpack("%32C*",$fudom);
7996: my $cucourseid=unpack("%32C*",$fucourseid);
7997: my $cusymb=unpack("%32C*",$fusymb);
7998: my $cunique=&recunique($fucourseid);
7999: my $cpart=unpack("%32S*",$part);
8000: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
8001:
8002: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
8003:
8004: $return.= ($cunique%$cuname+
8005: $cunique%$cudom+
8006: $cusymb%$cuname+
8007: $cusymb%$cudom+
8008: $cucourseid%$cuname+
8009: $cucourseid%$cudom+
8010: $cpart%$cuname+
8011: $cpart%$cudom);
8012: } else {
8013: $return.= ($cunique%$cuname+
8014: $cunique%$cudom+
8015: $cusymb%$cuname+
8016: $cusymb%$cudom+
8017: $cucourseid%$cuname+
8018: $cucourseid%$cudom);
8019: }
8020: return $return;
8021: }
8022:
8023: sub receipt {
8024: my ($part)=@_;
8025: my ($symb,$courseid,$domain,$name) = &whichuser();
8026: return &ireceipt($name,$domain,$courseid,$symb,$part);
8027: }
8028:
8029: sub whichuser {
8030: my ($passedsymb)=@_;
8031: my ($symb,$courseid,$domain,$name,$publicuser);
8032: if (defined($env{'form.grade_symb'})) {
8033: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
8034: my $allowed=&allowed('vgr',$tmp_courseid);
8035: if (!$allowed &&
8036: exists($env{'request.course.sec'}) &&
8037: $env{'request.course.sec'} !~ /^\s*$/) {
8038: $allowed=&allowed('vgr',$tmp_courseid.
8039: '/'.$env{'request.course.sec'});
8040: }
8041: if ($allowed) {
8042: ($symb)=&get_env_multiple('form.grade_symb');
8043: $courseid=$tmp_courseid;
8044: ($domain)=&get_env_multiple('form.grade_domain');
8045: ($name)=&get_env_multiple('form.grade_username');
8046: return ($symb,$courseid,$domain,$name,$publicuser);
8047: }
8048: }
8049: if (!$passedsymb) {
8050: $symb=&symbread();
8051: } else {
8052: $symb=$passedsymb;
8053: }
8054: $courseid=$env{'request.course.id'};
8055: $domain=$env{'user.domain'};
8056: $name=$env{'user.name'};
8057: if ($name eq 'public' && $domain eq 'public') {
8058: if (!defined($env{'form.username'})) {
8059: $env{'form.username'}.=time.rand(10000000);
8060: }
8061: $name.=$env{'form.username'};
8062: }
8063: return ($symb,$courseid,$domain,$name,$publicuser);
8064:
8065: }
8066:
8067: # ------------------------------------------------------------ Serves up a file
8068: # returns either the contents of the file or
8069: # -1 if the file doesn't exist
8070: #
8071: # if the target is a file that was uploaded via DOCS,
8072: # a check will be made to see if a current copy exists on the local server,
8073: # if it does this will be served, otherwise a copy will be retrieved from
8074: # the home server for the course and stored in /home/httpd/html/userfiles on
8075: # the local server.
8076:
8077: sub getfile {
8078: my ($file) = @_;
8079: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
8080: &repcopy($file);
8081: return &readfile($file);
8082: }
8083:
8084: sub repcopy_userfile {
8085: my ($file)=@_;
8086: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
8087: if ($file =~ m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
8088: my ($cdom,$cnum,$filename) =
8089: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
8090: my $uri="/uploaded/$cdom/$cnum/$filename";
8091: if (-e "$file") {
8092: # we already have a local copy, check it out
8093: my @fileinfo = stat($file);
8094: my $rtncode;
8095: my $info;
8096: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
8097: if ($lwpresp ne 'ok') {
8098: # there is no such file anymore, even though we had a local copy
8099: if ($rtncode eq '404') {
8100: unlink($file);
8101: }
8102: return -1;
8103: }
8104: if ($info < $fileinfo[9]) {
8105: # nice, the file we have is up-to-date, just say okay
8106: return 'ok';
8107: } else {
8108: # the file is outdated, get rid of it
8109: unlink($file);
8110: }
8111: }
8112: # one way or the other, at this point, we don't have the file
8113: # construct the correct path for the file
8114: my @parts = ($cdom,$cnum);
8115: if ($filename =~ m|^(.+)/[^/]+$|) {
8116: push @parts, split(/\//,$1);
8117: }
8118: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
8119: foreach my $part (@parts) {
8120: $path .= '/'.$part;
8121: if (!-e $path) {
8122: mkdir($path,0770);
8123: }
8124: }
8125: # now the path exists for sure
8126: # get a user agent
8127: my $ua=new LWP::UserAgent;
8128: my $transferfile=$file.'.in.transfer';
8129: # FIXME: this should flock
8130: if (-e $transferfile) { return 'ok'; }
8131: my $request;
8132: $uri=~s/^\///;
8133: $request=new HTTP::Request('GET','http://'.&hostname(&homeserver($cnum,$cdom)).'/raw/'.$uri);
8134: my $response=$ua->request($request,$transferfile);
8135: # did it work?
8136: if ($response->is_error()) {
8137: unlink($transferfile);
8138: &logthis("Userfile repcopy failed for $uri");
8139: return -1;
8140: }
8141: # worked, rename the transfer file
8142: rename($transferfile,$file);
8143: return 'ok';
8144: }
8145:
8146: sub tokenwrapper {
8147: my $uri=shift;
8148: $uri=~s|^http\://([^/]+)||;
8149: $uri=~s|^/||;
8150: $env{'user.environment'}=~/\/([^\/]+)\.id/;
8151: my $token=$1;
8152: my (undef,$udom,$uname,$file)=split('/',$uri,4);
8153: if ($udom && $uname && $file) {
8154: $file=~s|(\?\.*)*$||;
8155: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
8156: return 'http://'.&hostname(&homeserver($uname,$udom)).'/'.$uri.
8157: (($uri=~/\?/)?'&':'?').'token='.$token.
8158: '&tokenissued='.$perlvar{'lonHostID'};
8159: } else {
8160: return '/adm/notfound.html';
8161: }
8162: }
8163:
8164: # call with reqtype HEAD: get last modification time
8165: # call with reqtype GET: get the file contents
8166: # Do not call this with reqtype GET for large files! It loads everything into memory
8167: #
8168: sub getuploaded {
8169: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
8170: $uri=~s/^\///;
8171: $uri = 'http://'.&hostname(&homeserver($cnum,$cdom)).'/raw/'.$uri;
8172: my $ua=new LWP::UserAgent;
8173: my $request=new HTTP::Request($reqtype,$uri);
8174: my $response=$ua->request($request);
8175: $$rtncode = $response->code;
8176: if (! $response->is_success()) {
8177: return 'failed';
8178: }
8179: if ($reqtype eq 'HEAD') {
8180: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
8181: } elsif ($reqtype eq 'GET') {
8182: $$info = $response->content;
8183: }
8184: return 'ok';
8185: }
8186:
8187: sub readfile {
8188: my $file = shift;
8189: if ( (! -e $file ) || ($file eq '') ) { return -1; };
8190: my $fh;
8191: open($fh,"<$file");
8192: my $a='';
8193: while (my $line = <$fh>) { $a .= $line; }
8194: return $a;
8195: }
8196:
8197: sub filelocation {
8198: my ($dir,$file) = @_;
8199: my $location;
8200: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
8201:
8202: if ($file =~ m-^/adm/-) {
8203: $file=~s-^/adm/wrapper/-/-;
8204: $file=~s-^/adm/coursedocs/showdoc/-/-;
8205: }
8206:
8207: if ($file=~m:^/~:) { # is a contruction space reference
8208: $location = $file;
8209: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
8210: } elsif ($file=~m{^/home/$match_username/public_html/}) {
8211: # is a correct contruction space reference
8212: $location = $file;
8213: } elsif ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
8214: $location = $file;
8215: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
8216: my ($udom,$uname,$filename)=
8217: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
8218: my $home=&homeserver($uname,$udom);
8219: my $is_me=0;
8220: my @ids=¤t_machine_ids();
8221: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
8222: if ($is_me) {
8223: $location=&propath($udom,$uname).'/userfiles/'.$filename;
8224: } else {
8225: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
8226: $udom.'/'.$uname.'/'.$filename;
8227: }
8228: } elsif ($file =~ m-^/adm/-) {
8229: $location = $perlvar{'lonDocRoot'}.'/'.$file;
8230: } else {
8231: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
8232: $file=~s:^/res/:/:;
8233: if ( !( $file =~ m:^/:) ) {
8234: $location = $dir. '/'.$file;
8235: } else {
8236: $location = '/home/httpd/html/res'.$file;
8237: }
8238: }
8239: $location=~s://+:/:g; # remove duplicate /
8240: while ($location=~m{/\.\./}) {
8241: if ($location =~ m{/[^/]+/\.\./}) {
8242: $location=~ s{/[^/]+/\.\./}{/}g;
8243: } else {
8244: $location=~ s{/\.\./}{/}g;
8245: }
8246: } #remove dir/..
8247: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
8248: return $location;
8249: }
8250:
8251: sub hreflocation {
8252: my ($dir,$file)=@_;
8253: unless (($file=~m-^http://-i) || ($file=~m-^/-)) {
8254: $file=filelocation($dir,$file);
8255: } elsif ($file=~m-^/adm/-) {
8256: $file=~s-^/adm/wrapper/-/-;
8257: $file=~s-^/adm/coursedocs/showdoc/-/-;
8258: }
8259: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
8260: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
8261: } elsif ($file=~m-/home/($match_username)/public_html/-) {
8262: $file=~s-^/home/($match_username)/public_html/-/~$1/-;
8263: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
8264: $file=~s-^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/
8265: -/uploaded/$1/$2/-x;
8266: }
8267: if ($file=~ m{^/userfiles/}) {
8268: $file =~ s{^/userfiles/}{/uploaded/};
8269: }
8270: return $file;
8271: }
8272:
8273: sub current_machine_domains {
8274: return &machine_domains(&hostname($perlvar{'lonHostID'}));
8275: }
8276:
8277: sub machine_domains {
8278: my ($hostname) = @_;
8279: my @domains;
8280: my %hostname = &all_hostnames();
8281: while( my($id, $name) = each(%hostname)) {
8282: # &logthis("-$id-$name-$hostname-");
8283: if ($hostname eq $name) {
8284: push(@domains,&host_domain($id));
8285: }
8286: }
8287: return @domains;
8288: }
8289:
8290: sub current_machine_ids {
8291: return &machine_ids(&hostname($perlvar{'lonHostID'}));
8292: }
8293:
8294: sub machine_ids {
8295: my ($hostname) = @_;
8296: $hostname ||= &hostname($perlvar{'lonHostID'});
8297: my @ids;
8298: my %name_to_host = &all_names();
8299: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
8300: return @{ $name_to_host{$hostname} };
8301: }
8302: return;
8303: }
8304:
8305: sub additional_machine_domains {
8306: my @domains;
8307: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
8308: while( my $line = <$fh>) {
8309: $line =~ s/\s//g;
8310: push(@domains,$line);
8311: }
8312: return @domains;
8313: }
8314:
8315: sub default_login_domain {
8316: my $domain = $perlvar{'lonDefDomain'};
8317: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
8318: foreach my $posdom (¤t_machine_domains(),
8319: &additional_machine_domains()) {
8320: if (lc($posdom) eq lc($testdomain)) {
8321: $domain=$posdom;
8322: last;
8323: }
8324: }
8325: return $domain;
8326: }
8327:
8328: # ------------------------------------------------------------- Declutters URLs
8329:
8330: sub declutter {
8331: my $thisfn=shift;
8332: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
8333: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
8334: $thisfn=~s/^\///;
8335: $thisfn=~s|^adm/wrapper/||;
8336: $thisfn=~s|^adm/coursedocs/showdoc/||;
8337: $thisfn=~s/^res\///;
8338: $thisfn=~s/\?.+$//;
8339: return $thisfn;
8340: }
8341:
8342: # ------------------------------------------------------------- Clutter up URLs
8343:
8344: sub clutter {
8345: my $thisfn='/'.&declutter(shift);
8346: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
8347: || $thisfn =~ m{^/adm/(includes|pages)} ) {
8348: $thisfn='/res'.$thisfn;
8349: }
8350: if ($thisfn !~m|/adm|) {
8351: if ($thisfn =~ m|/ext/|) {
8352: $thisfn='/adm/wrapper'.$thisfn;
8353: } else {
8354: my ($ext) = ($thisfn =~ /\.(\w+)$/);
8355: my $embstyle=&Apache::loncommon::fileembstyle($ext);
8356: if ($embstyle eq 'ssi'
8357: || ($embstyle eq 'hdn')
8358: || ($embstyle eq 'rat')
8359: || ($embstyle eq 'prv')
8360: || ($embstyle eq 'ign')) {
8361: #do nothing with these
8362: } elsif (($embstyle eq 'img')
8363: || ($embstyle eq 'emb')
8364: || ($embstyle eq 'wrp')) {
8365: $thisfn='/adm/wrapper'.$thisfn;
8366: } elsif ($embstyle eq 'unk'
8367: && $thisfn!~/\.(sequence|page)$/) {
8368: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
8369: } else {
8370: # &logthis("Got a blank emb style");
8371: }
8372: }
8373: }
8374: return $thisfn;
8375: }
8376:
8377: sub clutter_with_no_wrapper {
8378: my $uri = &clutter(shift);
8379: if ($uri =~ m-^/adm/-) {
8380: $uri =~ s-^/adm/wrapper/-/-;
8381: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
8382: }
8383: return $uri;
8384: }
8385:
8386: sub freeze_escape {
8387: my ($value)=@_;
8388: if (ref($value)) {
8389: $value=&nfreeze($value);
8390: return '__FROZEN__'.&escape($value);
8391: }
8392: return &escape($value);
8393: }
8394:
8395:
8396: sub thaw_unescape {
8397: my ($value)=@_;
8398: if ($value =~ /^__FROZEN__/) {
8399: substr($value,0,10,undef);
8400: $value=&unescape($value);
8401: return &thaw($value);
8402: }
8403: return &unescape($value);
8404: }
8405:
8406: sub correct_line_ends {
8407: my ($result)=@_;
8408: $$result =~s/\r\n/\n/mg;
8409: $$result =~s/\r/\n/mg;
8410: }
8411: # ================================================================ Main Program
8412:
8413: sub goodbye {
8414: &logthis("Starting Shut down");
8415: #not converted to using infrastruture and probably shouldn't be
8416: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
8417: #converted
8418: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
8419: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
8420: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
8421: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
8422: #1.1 only
8423: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
8424: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
8425: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
8426: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
8427: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
8428: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
8429: &logthis(sprintf("%-20s is %s",'hits',$hits));
8430: &flushcourselogs();
8431: &logthis("Shutting down");
8432: }
8433:
8434: sub get_dns {
8435: my ($url,$func,$ignore_cache) = @_;
8436: if (!$ignore_cache) {
8437: my ($content,$cached)=
8438: &Apache::lonnet::is_cached_new('dns',$url);
8439: if ($cached) {
8440: &$func($content);
8441: return;
8442: }
8443: }
8444:
8445: my %alldns;
8446: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
8447: foreach my $dns (<$config>) {
8448: next if ($dns !~ /^\^(\S*)/x);
8449: $alldns{$1} = 1;
8450: }
8451: while (%alldns) {
8452: my ($dns) = keys(%alldns);
8453: delete($alldns{$dns});
8454: my $ua=new LWP::UserAgent;
8455: my $request=new HTTP::Request('GET',"http://$dns$url");
8456: my $response=$ua->request($request);
8457: next if ($response->is_error());
8458: my @content = split("\n",$response->content);
8459: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
8460: &$func(\@content);
8461: return;
8462: }
8463: close($config);
8464: my $which = (split('/',$url))[3];
8465: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
8466: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
8467: my @content = <$config>;
8468: &$func(\@content);
8469: return;
8470: }
8471: # ------------------------------------------------------------ Read domain file
8472: {
8473: my $loaded;
8474: my %domain;
8475:
8476: sub parse_domain_tab {
8477: my ($lines) = @_;
8478: foreach my $line (@$lines) {
8479: next if ($line =~ /^(\#|\s*$ )/x);
8480:
8481: chomp($line);
8482: my ($name,@elements) = split(/:/,$line,9);
8483: my %this_domain;
8484: foreach my $field ('description', 'auth_def', 'auth_arg_def',
8485: 'lang_def', 'city', 'longi', 'lati',
8486: 'primary') {
8487: $this_domain{$field} = shift(@elements);
8488: }
8489: $domain{$name} = \%this_domain;
8490: }
8491: }
8492:
8493: sub reset_domain_info {
8494: undef($loaded);
8495: undef(%domain);
8496: }
8497:
8498: sub load_domain_tab {
8499: my ($ignore_cache) = @_;
8500: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
8501: my $fh;
8502: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
8503: my @lines = <$fh>;
8504: &parse_domain_tab(\@lines);
8505: }
8506: close($fh);
8507: $loaded = 1;
8508: }
8509:
8510: sub domain {
8511: &load_domain_tab() if (!$loaded);
8512:
8513: my ($name,$what) = @_;
8514: return if ( !exists($domain{$name}) );
8515:
8516: if (!$what) {
8517: return $domain{$name}{'description'};
8518: }
8519: return $domain{$name}{$what};
8520: }
8521: }
8522:
8523:
8524: # ------------------------------------------------------------- Read hosts file
8525: {
8526: my %hostname;
8527: my %hostdom;
8528: my %libserv;
8529: my $loaded;
8530: my %name_to_host;
8531:
8532: sub parse_hosts_tab {
8533: my ($file) = @_;
8534: foreach my $configline (@$file) {
8535: next if ($configline =~ /^(\#|\s*$ )/x);
8536: next if ($configline =~ /^\^/);
8537: chomp($configline);
8538: my ($id,$domain,$role,$name)=split(/:/,$configline);
8539: $name=~s/\s//g;
8540: if ($id && $domain && $role && $name) {
8541: $hostname{$id}=$name;
8542: push(@{$name_to_host{$name}}, $id);
8543: $hostdom{$id}=$domain;
8544: if ($role eq 'library') { $libserv{$id}=$name; }
8545: }
8546: }
8547: }
8548:
8549: sub reset_hosts_info {
8550: &purge_remembered();
8551: &reset_domain_info();
8552: &reset_hosts_ip_info();
8553: undef(%name_to_host);
8554: undef(%hostname);
8555: undef(%hostdom);
8556: undef(%libserv);
8557: undef($loaded);
8558: }
8559:
8560: sub load_hosts_tab {
8561: my ($ignore_cache) = @_;
8562: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
8563: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
8564: my @config = <$config>;
8565: &parse_hosts_tab(\@config);
8566: close($config);
8567: $loaded=1;
8568: }
8569:
8570: sub hostname {
8571: &load_hosts_tab() if (!$loaded);
8572:
8573: my ($lonid) = @_;
8574: return $hostname{$lonid};
8575: }
8576:
8577: sub all_hostnames {
8578: &load_hosts_tab() if (!$loaded);
8579:
8580: return %hostname;
8581: }
8582:
8583: sub all_names {
8584: &load_hosts_tab() if (!$loaded);
8585:
8586: return %name_to_host;
8587: }
8588:
8589: sub is_library {
8590: &load_hosts_tab() if (!$loaded);
8591:
8592: return exists($libserv{$_[0]});
8593: }
8594:
8595: sub all_library {
8596: &load_hosts_tab() if (!$loaded);
8597:
8598: return %libserv;
8599: }
8600:
8601: sub get_servers {
8602: &load_hosts_tab() if (!$loaded);
8603:
8604: my ($domain,$type) = @_;
8605: my %possible_hosts = ($type eq 'library') ? %libserv
8606: : %hostname;
8607: my %result;
8608: if (ref($domain) eq 'ARRAY') {
8609: while ( my ($host,$hostname) = each(%possible_hosts)) {
8610: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
8611: $result{$host} = $hostname;
8612: }
8613: }
8614: } else {
8615: while ( my ($host,$hostname) = each(%possible_hosts)) {
8616: if ($hostdom{$host} eq $domain) {
8617: $result{$host} = $hostname;
8618: }
8619: }
8620: }
8621: return %result;
8622: }
8623:
8624: sub host_domain {
8625: &load_hosts_tab() if (!$loaded);
8626:
8627: my ($lonid) = @_;
8628: return $hostdom{$lonid};
8629: }
8630:
8631: sub all_domains {
8632: &load_hosts_tab() if (!$loaded);
8633:
8634: my %seen;
8635: my @uniq = grep(!$seen{$_}++, values(%hostdom));
8636: return @uniq;
8637: }
8638: }
8639:
8640: {
8641: my %iphost;
8642: my %name_to_ip;
8643: my %lonid_to_ip;
8644:
8645: sub get_hosts_from_ip {
8646: my ($ip) = @_;
8647: my %iphosts = &get_iphost();
8648: if (ref($iphosts{$ip})) {
8649: return @{$iphosts{$ip}};
8650: }
8651: return;
8652: }
8653:
8654: sub reset_hosts_ip_info {
8655: undef(%iphost);
8656: undef(%name_to_ip);
8657: undef(%lonid_to_ip);
8658: }
8659:
8660: sub get_host_ip {
8661: my ($lonid) = @_;
8662: if (exists($lonid_to_ip{$lonid})) {
8663: return $lonid_to_ip{$lonid};
8664: }
8665: my $name=&hostname($lonid);
8666: my $ip = gethostbyname($name);
8667: return if (!$ip || length($ip) ne 4);
8668: $ip=inet_ntoa($ip);
8669: $name_to_ip{$name} = $ip;
8670: $lonid_to_ip{$lonid} = $ip;
8671: return $ip;
8672: }
8673:
8674: sub get_iphost {
8675: my ($ignore_cache) = @_;
8676:
8677: if (!$ignore_cache) {
8678: if (%iphost) {
8679: return %iphost;
8680: }
8681: my ($ip_info,$cached)=
8682: &Apache::lonnet::is_cached_new('iphost','iphost');
8683: if ($cached) {
8684: %iphost = %{$ip_info->[0]};
8685: %name_to_ip = %{$ip_info->[1]};
8686: %lonid_to_ip = %{$ip_info->[2]};
8687: return %iphost;
8688: }
8689: }
8690:
8691: # get yesterday's info for fallback
8692: my %old_name_to_ip;
8693: my ($ip_info,$cached)=
8694: &Apache::lonnet::is_cached_new('iphost','iphost');
8695: if ($cached) {
8696: %old_name_to_ip = %{$ip_info->[1]};
8697: }
8698:
8699: my %name_to_host = &all_names();
8700: foreach my $name (keys(%name_to_host)) {
8701: my $ip;
8702: if (!exists($name_to_ip{$name})) {
8703: $ip = gethostbyname($name);
8704: if (!$ip || length($ip) ne 4) {
8705: if (defined($old_name_to_ip{$name})) {
8706: $ip = $old_name_to_ip{$name};
8707: &logthis("Can't find $name defaulting to old $ip");
8708: } else {
8709: &logthis("Name $name no IP found");
8710: next;
8711: }
8712: } else {
8713: $ip=inet_ntoa($ip);
8714: }
8715: $name_to_ip{$name} = $ip;
8716: } else {
8717: $ip = $name_to_ip{$name};
8718: }
8719: foreach my $id (@{ $name_to_host{$name} }) {
8720: $lonid_to_ip{$id} = $ip;
8721: }
8722: push(@{$iphost{$ip}},@{$name_to_host{$name}});
8723: }
8724: &Apache::lonnet::do_cache_new('iphost','iphost',
8725: [\%iphost,\%name_to_ip,\%lonid_to_ip],
8726: 48*60*60);
8727:
8728: return %iphost;
8729: }
8730: }
8731:
8732: BEGIN {
8733:
8734: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
8735: unless ($readit) {
8736: {
8737: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
8738: %perlvar = (%perlvar,%{$configvars});
8739: }
8740:
8741:
8742: # ------------------------------------------------------ Read spare server file
8743: {
8744: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
8745:
8746: while (my $configline=<$config>) {
8747: chomp($configline);
8748: if ($configline) {
8749: my ($host,$type) = split(':',$configline,2);
8750: if (!defined($type) || $type eq '') { $type = 'default' };
8751: push(@{ $spareid{$type} }, $host);
8752: }
8753: }
8754: close($config);
8755: }
8756: # ------------------------------------------------------------ Read permissions
8757: {
8758: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
8759:
8760: while (my $configline=<$config>) {
8761: chomp($configline);
8762: if ($configline) {
8763: my ($role,$perm)=split(/ /,$configline);
8764: if ($perm ne '') { $pr{$role}=$perm; }
8765: }
8766: }
8767: close($config);
8768: }
8769:
8770: # -------------------------------------------- Read plain texts for permissions
8771: {
8772: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
8773:
8774: while (my $configline=<$config>) {
8775: chomp($configline);
8776: if ($configline) {
8777: my ($short,@plain)=split(/:/,$configline);
8778: %{$prp{$short}} = ();
8779: if (@plain > 0) {
8780: $prp{$short}{'std'} = $plain[0];
8781: for (my $i=1; $i<@plain; $i++) {
8782: $prp{$short}{'alt'.$i} = $plain[$i];
8783: }
8784: }
8785: }
8786: }
8787: close($config);
8788: }
8789:
8790: # ---------------------------------------------------------- Read package table
8791: {
8792: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
8793:
8794: while (my $configline=<$config>) {
8795: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
8796: chomp($configline);
8797: my ($short,$plain)=split(/:/,$configline);
8798: my ($pack,$name)=split(/\&/,$short);
8799: if ($plain ne '') {
8800: $packagetab{$pack.'&'.$name.'&name'}=$name;
8801: $packagetab{$short}=$plain;
8802: }
8803: }
8804: close($config);
8805: }
8806:
8807: # ------------- set up temporary directory
8808: {
8809: $tmpdir = $perlvar{'lonDaemons'}.'/tmp/';
8810:
8811: }
8812:
8813: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
8814: 'compress_threshold'=> 20_000,
8815: });
8816:
8817: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
8818: $dumpcount=0;
8819: $locknum=0;
8820:
8821: &logtouch();
8822: &logthis('<font color="yellow">INFO: Read configuration</font>');
8823: $readit=1;
8824: {
8825: use integer;
8826: my $test=(2**32)+1;
8827: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
8828: &logthis(" Detected 64bit platform ($_64bit)");
8829: }
8830: }
8831: }
8832:
8833: 1;
8834: __END__
8835:
8836: =pod
8837:
8838: =head1 NAME
8839:
8840: Apache::lonnet - Subroutines to ask questions about things in the network.
8841:
8842: =head1 SYNOPSIS
8843:
8844: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
8845:
8846: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
8847:
8848: Common parameters:
8849:
8850: =over 4
8851:
8852: =item *
8853:
8854: $uname : an internal username (if $cname expecting a course Id specifically)
8855:
8856: =item *
8857:
8858: $udom : a domain (if $cdom expecting a course's domain specifically)
8859:
8860: =item *
8861:
8862: $symb : a resource instance identifier
8863:
8864: =item *
8865:
8866: $namespace : the name of a .db file that contains the data needed or
8867: being set.
8868:
8869: =back
8870:
8871: =head1 OVERVIEW
8872:
8873: lonnet provides subroutines which interact with the
8874: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
8875: about classes, users, and resources.
8876:
8877: For many of these objects you can also use this to store data about
8878: them or modify them in various ways.
8879:
8880: =head2 Symbs
8881:
8882: To identify a specific instance of a resource, LON-CAPA uses symbols
8883: or "symbs"X<symb>. These identifiers are built from the URL of the
8884: map, the resource number of the resource in the map, and the URL of
8885: the resource itself. The latter is somewhat redundant, but might help
8886: if maps change.
8887:
8888: An example is
8889:
8890: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
8891:
8892: The respective map entry is
8893:
8894: <resource id="19" src="/res/msu/korte/tests/part12.problem"
8895: title="Problem 2">
8896: </resource>
8897:
8898: Symbs are used by the random number generator, as well as to store and
8899: restore data specific to a certain instance of for example a problem.
8900:
8901: =head2 Storing And Retrieving Data
8902:
8903: X<store()>X<cstore()>X<restore()>Three of the most important functions
8904: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
8905: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
8906: is is the non-critical message twin of cstore. These functions are for
8907: handlers to store a perl hash to a user's permanent data space in an
8908: easy manner, and to retrieve it again on another call. It is expected
8909: that a handler would use this once at the beginning to retrieve data,
8910: and then again once at the end to send only the new data back.
8911:
8912: The data is stored in the user's data directory on the user's
8913: homeserver under the ID of the course.
8914:
8915: The hash that is returned by restore will have all of the previous
8916: value for all of the elements of the hash.
8917:
8918: Example:
8919:
8920: #creating a hash
8921: my %hash;
8922: $hash{'foo'}='bar';
8923:
8924: #storing it
8925: &Apache::lonnet::cstore(\%hash);
8926:
8927: #changing a value
8928: $hash{'foo'}='notbar';
8929:
8930: #adding a new value
8931: $hash{'bar'}='foo';
8932: &Apache::lonnet::cstore(\%hash);
8933:
8934: #retrieving the hash
8935: my %history=&Apache::lonnet::restore();
8936:
8937: #print the hash
8938: foreach my $key (sort(keys(%history))) {
8939: print("\%history{$key} = $history{$key}");
8940: }
8941:
8942: Will print out:
8943:
8944: %history{1:foo} = bar
8945: %history{1:keys} = foo:timestamp
8946: %history{1:timestamp} = 990455579
8947: %history{2:bar} = foo
8948: %history{2:foo} = notbar
8949: %history{2:keys} = foo:bar:timestamp
8950: %history{2:timestamp} = 990455580
8951: %history{bar} = foo
8952: %history{foo} = notbar
8953: %history{timestamp} = 990455580
8954: %history{version} = 2
8955:
8956: Note that the special hash entries C<keys>, C<version> and
8957: C<timestamp> were added to the hash. C<version> will be equal to the
8958: total number of versions of the data that have been stored. The
8959: C<timestamp> attribute will be the UNIX time the hash was
8960: stored. C<keys> is available in every historical section to list which
8961: keys were added or changed at a specific historical revision of a
8962: hash.
8963:
8964: B<Warning>: do not store the hash that restore returns directly. This
8965: will cause a mess since it will restore the historical keys as if the
8966: were new keys. I.E. 1:foo will become 1:1:foo etc.
8967:
8968: Calling convention:
8969:
8970: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
8971: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
8972:
8973: For more detailed information, see lonnet specific documentation.
8974:
8975: =head1 RETURN MESSAGES
8976:
8977: =over 4
8978:
8979: =item * B<con_lost>: unable to contact remote host
8980:
8981: =item * B<con_delayed>: unable to contact remote host, message will be delivered
8982: when the connection is brought back up
8983:
8984: =item * B<con_failed>: unable to contact remote host and unable to save message
8985: for later delivery
8986:
8987: =item * B<error:>: an error a occured, a description of the error follows the :
8988:
8989: =item * B<no_such_host>: unable to fund a host associated with the user/domain
8990: that was requested
8991:
8992: =back
8993:
8994: =head1 PUBLIC SUBROUTINES
8995:
8996: =head2 Session Environment Functions
8997:
8998: =over 4
8999:
9000: =item *
9001: X<appenv()>
9002: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
9003: the user envirnoment file, and will be restored for each access this
9004: user makes during this session, also modifies the %env for the current
9005: process. Optional rolesarrayref - if defined contains a reference to an array
9006: of roles which are exempt from the restriction on modifying user.role entries
9007: in the user's environment.db and in %env.
9008:
9009: =item *
9010: X<delenv()>
9011: B<delenv($regexp)>: removes all items from the session
9012: environment file that matches the regular expression in $regexp. The
9013: values are also delted from the current processes %env.
9014:
9015: =item * get_env_multiple($name)
9016:
9017: gets $name from the %env hash, it seemlessly handles the cases where multiple
9018: values may be defined and end up as an array ref.
9019:
9020: returns an array of values
9021:
9022: =back
9023:
9024: =head2 User Information
9025:
9026: =over 4
9027:
9028: =item *
9029: X<queryauthenticate()>
9030: B<queryauthenticate($uname,$udom)>: try to determine user's current
9031: authentication scheme
9032:
9033: =item *
9034: X<authenticate()>
9035: B<authenticate($uname,$upass,$udom)>: try to
9036: authenticate user from domain's lib servers (first use the current
9037: one). C<$upass> should be the users password.
9038:
9039: =item *
9040: X<homeserver()>
9041: B<homeserver($uname,$udom)>: find the server which has
9042: the user's directory and files (there must be only one), this caches
9043: the answer, and also caches if there is a borken connection.
9044:
9045: =item *
9046: X<idget()>
9047: B<idget($udom,@ids)>: find the usernames behind a list of IDs
9048: (IDs are a unique resource in a domain, there must be only 1 ID per
9049: username, and only 1 username per ID in a specific domain) (returns
9050: hash: id=>name,id=>name)
9051:
9052: =item *
9053: X<idrget()>
9054: B<idrget($udom,@unames)>: find the IDs behind a list of
9055: usernames (returns hash: name=>id,name=>id)
9056:
9057: =item *
9058: X<idput()>
9059: B<idput($udom,%ids)>: store away a list of names and associated IDs
9060:
9061: =item *
9062: X<rolesinit()>
9063: B<rolesinit($udom,$username,$authhost)>: get user privileges
9064:
9065: =item *
9066: X<getsection()>
9067: B<getsection($udom,$uname,$cname)>: finds the section of student in the
9068: course $cname, return section name/number or '' for "not in course"
9069: and '-1' for "no section"
9070:
9071: =item *
9072: X<userenvironment()>
9073: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
9074: passed in @what from the requested user's environment, returns a hash
9075:
9076: =item *
9077: X<userlog_query()>
9078: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
9079: activity.log file. %filters defines filters applied when parsing the
9080: log file. These can be start or end timestamps, or the type of action
9081: - log to look for Login or Logout events, check for Checkin or
9082: Checkout, role for role selection. The response is in the form
9083: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
9084: escaped strings of the action recorded in the activity.log file.
9085:
9086: =back
9087:
9088: =head2 User Roles
9089:
9090: =over 4
9091:
9092: =item *
9093:
9094: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
9095: F: full access
9096: U,I,K: authentication modes (cxx only)
9097: '': forbidden
9098: 1: user needs to choose course
9099: 2: browse allowed
9100: A: passphrase authentication needed
9101:
9102: =item *
9103:
9104: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
9105: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
9106: and course level
9107:
9108: =item *
9109:
9110: plaintext($short) : return value in %prp hash (rolesplain.tab); plain text
9111: explanation of a user role term
9112:
9113: =item *
9114:
9115: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
9116: All arguments are optional. Returns a hash of a roles, either for
9117: co-author/assistant author roles for a user's Construction Space
9118: (default), or if $context is 'userroles', roles for the user himself,
9119: In the hash, keys are set to colon-separated $uname,$udom,$role, and
9120: (optionally) if $withsec is true, a fourth colon-separated item - $section.
9121: For each key, value is set to colon-separated start and end times for
9122: the role. If no username and domain are specified, will default to
9123: current user/domain. Types, roles, and roledoms are references to arrays
9124: of role statuses (active, future or previous), roles
9125: (e.g., cc,in, st etc.) and domains of the roles which can be used
9126: to restrict the list of roles reported. If no array ref is
9127: provided for types, will default to return only active roles.
9128:
9129: =back
9130:
9131: =head2 User Modification
9132:
9133: =over 4
9134:
9135: =item *
9136:
9137: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
9138: user for the level given by URL. Optional start and end dates (leave empty
9139: string or zero for "no date")
9140:
9141: =item *
9142:
9143: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
9144: change a users, password, possible return values are: ok,
9145: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
9146: refused
9147:
9148: =item *
9149:
9150: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
9151:
9152: =item *
9153:
9154: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,
9155: $forceid,$desiredhome,$email,$inststatus) :
9156: modify user
9157:
9158: =item *
9159:
9160: modifystudent
9161:
9162: modify a student's enrollment and identification information.
9163: The course id is resolved based on the current users environment.
9164: This means the envoking user must be a course coordinator or otherwise
9165: associated with a course.
9166:
9167: This call is essentially a wrapper for lonnet::modifyuser and
9168: lonnet::modify_student_enrollment
9169:
9170: Inputs:
9171:
9172: =over 4
9173:
9174: =item B<$udom> Student's loncapa domain
9175:
9176: =item B<$uname> Student's loncapa login name
9177:
9178: =item B<$uid> Student's id/student number
9179:
9180: =item B<$umode> Student's authentication mode
9181:
9182: =item B<$upass> Student's password
9183:
9184: =item B<$first> Student's first name
9185:
9186: =item B<$middle> Student's middle name
9187:
9188: =item B<$last> Student's last name
9189:
9190: =item B<$gene> Student's generation
9191:
9192: =item B<$usec> Student's section in course
9193:
9194: =item B<$end> Unix time of the roles expiration
9195:
9196: =item B<$start> Unix time of the roles start date
9197:
9198: =item B<$forceid> If defined, allow $uid to be changed
9199:
9200: =item B<$desiredhome> server to use as home server for student
9201:
9202: =item B<$email> Student's permanent e-mail address
9203:
9204: =item B<$type> Type of enrollment (auto or manual)
9205:
9206: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
9207:
9208: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
9209:
9210: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
9211:
9212: =item B<$context> role change context (shown in User Management Logs display in a course)
9213:
9214: =item B<$inststatus> institutional status of user - : separated string of escaped status types
9215:
9216: =back
9217:
9218: =item *
9219:
9220: modify_student_enrollment
9221:
9222: Change a students enrollment status in a class. The environment variable
9223: 'role.request.course' must be defined for this function to proceed.
9224:
9225: Inputs:
9226:
9227: =over 4
9228:
9229: =item $udom, students domain
9230:
9231: =item $uname, students name
9232:
9233: =item $uid, students user id
9234:
9235: =item $first, students first name
9236:
9237: =item $middle
9238:
9239: =item $last
9240:
9241: =item $gene
9242:
9243: =item $usec
9244:
9245: =item $end
9246:
9247: =item $start
9248:
9249: =item $type
9250:
9251: =item $locktype
9252:
9253: =item $cid
9254:
9255: =item $selfenroll
9256:
9257: =item $context
9258:
9259: =back
9260:
9261:
9262: =item *
9263:
9264: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
9265: custom role; give a custom role to a user for the level given by URL. Specify
9266: name and domain of role author, and role name
9267:
9268: =item *
9269:
9270: revokerole($udom,$uname,$url,$role) : revoke a role for url
9271:
9272: =item *
9273:
9274: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
9275:
9276: =back
9277:
9278: =head2 Course Infomation
9279:
9280: =over 4
9281:
9282: =item *
9283:
9284: coursedescription($courseid) : returns a hash of information about the
9285: specified course id, including all environment settings for the
9286: course, the description of the course will be in the hash under the
9287: key 'description'
9288:
9289: =item *
9290:
9291: resdata($name,$domain,$type,@which) : request for current parameter
9292: setting for a specific $type, where $type is either 'course' or 'user',
9293: @what should be a list of parameters to ask about. This routine caches
9294: answers for 5 minutes.
9295:
9296: =item *
9297:
9298: get_courseresdata($courseid, $domain) : dump the entire course resource
9299: data base, returning a hash that is keyed by the resource name and has
9300: values that are the resource value. I believe that the timestamps and
9301: versions are also returned.
9302:
9303:
9304: =back
9305:
9306: =head2 Course Modification
9307:
9308: =over 4
9309:
9310: =item *
9311:
9312: writecoursepref($courseid,%prefs) : write preferences (environment
9313: database) for a course
9314:
9315: =item *
9316:
9317: createcourse($udom,$description,$url) : make/modify course
9318:
9319: =back
9320:
9321: =head2 Resource Subroutines
9322:
9323: =over 4
9324:
9325: =item *
9326:
9327: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
9328:
9329: =item *
9330:
9331: repcopy($filename) : subscribes to the requested file, and attempts to
9332: replicate from the owning library server, Might return
9333: 'unavailable', 'not_found', 'forbidden', 'ok', or
9334: 'bad_request', also attempts to grab the metadata for the
9335: resource. Expects the local filesystem pathname
9336: (/home/httpd/html/res/....)
9337:
9338: =back
9339:
9340: =head2 Resource Information
9341:
9342: =over 4
9343:
9344: =item *
9345:
9346: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
9347: a vairety of different possible values, $varname should be a request
9348: string, and the other parameters can be used to specify who and what
9349: one is asking about.
9350:
9351: Possible values for $varname are environment.lastname (or other item
9352: from the envirnment hash), user.name (or someother aspect about the
9353: user), resource.0.maxtries (or some other part and parameter of a
9354: resource)
9355:
9356: =item *
9357:
9358: directcondval($number) : get current value of a condition; reads from a state
9359: string
9360:
9361: =item *
9362:
9363: condval($condidx) : value of condition index based on state
9364:
9365: =item *
9366:
9367: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
9368: resource's metadata, $what should be either a specific key, or either
9369: 'keys' (to get a list of possible keys) or 'packages' to get a list of
9370: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
9371:
9372: this function automatically caches all requests
9373:
9374: =item *
9375:
9376: metadata_query($query,$custom,$customshow) : make a metadata query against the
9377: network of library servers; returns file handle of where SQL and regex results
9378: will be stored for query
9379:
9380: =item *
9381:
9382: symbread($filename) : return symbolic list entry (filename argument optional);
9383: returns the data handle
9384:
9385: =item *
9386:
9387: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
9388: a possible symb for the URL in $thisfn, and if is an encryypted
9389: resource that the user accessed using /enc/ returns a 1 on success, 0
9390: on failure, user must be in a course, as it assumes the existance of
9391: the course initial hash, and uses $env('request.course.id'}
9392:
9393:
9394: =item *
9395:
9396: symbclean($symb) : removes versions numbers from a symb, returns the
9397: cleaned symb
9398:
9399: =item *
9400:
9401: is_on_map($uri) : checks if the $uri is somewhere on the current
9402: course map, user must be in a course for it to work.
9403:
9404: =item *
9405:
9406: numval($salt) : return random seed value (addend for rndseed)
9407:
9408: =item *
9409:
9410: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
9411: a random seed, all arguments are optional, if they aren't sent it uses the
9412: environment to derive them. Note: if symb isn't sent and it can't get one
9413: from &symbread it will use the current time as its return value
9414:
9415: =item *
9416:
9417: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
9418: unfakeable, receipt
9419:
9420: =item *
9421:
9422: receipt() : API to ireceipt working off of env values; given out to users
9423:
9424: =item *
9425:
9426: countacc($url) : count the number of accesses to a given URL
9427:
9428: =item *
9429:
9430: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
9431:
9432: =item *
9433:
9434: checkin($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 $tcrsid)
9435:
9436: =item *
9437:
9438: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
9439:
9440: =item *
9441:
9442: devalidate($symb) : devalidate temporary spreadsheet calculations,
9443: forcing spreadsheet to reevaluate the resource scores next time.
9444:
9445: =back
9446:
9447: =head2 Storing/Retreiving Data
9448:
9449: =over 4
9450:
9451: =item *
9452:
9453: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
9454: for this url; hashref needs to be given and should be a \%hashname; the
9455: remaining args aren't required and if they aren't passed or are '' they will
9456: be derived from the env
9457:
9458: =item *
9459:
9460: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
9461: uses critical subroutine
9462:
9463: =item *
9464:
9465: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
9466: all args are optional
9467:
9468: =item *
9469:
9470: dumpstore($namespace,$udom,$uname,$regexp,$range) :
9471: dumps the complete (or key matching regexp) namespace into a hash
9472: ($udom, $uname, $regexp, $range are optional) for a namespace that is
9473: normally &store()ed into
9474:
9475: $range should be either an integer '100' (give me the first 100
9476: matching records)
9477: or be two integers sperated by a - with no spaces
9478: '30-50' (give me the 30th through the 50th matching
9479: records)
9480:
9481:
9482: =item *
9483:
9484: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
9485: replaces a &store() version of data with a replacement set of data
9486: for a particular resource in a namespace passed in the $storehash hash
9487: reference
9488:
9489: =item *
9490:
9491: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
9492: works very similar to store/cstore, but all data is stored in a
9493: temporary location and can be reset using tmpreset, $storehash should
9494: be a hash reference, returns nothing on success
9495:
9496: =item *
9497:
9498: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
9499: similar to restore, but all data is stored in a temporary location and
9500: can be reset using tmpreset. Returns a hash of values on success,
9501: error string otherwise.
9502:
9503: =item *
9504:
9505: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
9506: deltes all keys for $symb form the temporary storage hash.
9507:
9508: =item *
9509:
9510: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
9511: reference filled in from namesp ($udom and $uname are optional)
9512:
9513: =item *
9514:
9515: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
9516: namesp ($udom and $uname are optional)
9517:
9518: =item *
9519:
9520: dump($namespace,$udom,$uname,$regexp,$range) :
9521: dumps the complete (or key matching regexp) namespace into a hash
9522: ($udom, $uname, $regexp, $range are optional)
9523:
9524: $range should be either an integer '100' (give me the first 100
9525: matching records)
9526: or be two integers sperated by a - with no spaces
9527: '30-50' (give me the 30th through the 50th matching
9528: records)
9529: =item *
9530:
9531: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
9532: $store can be a scalar, an array reference, or if the amount to be
9533: incremented is > 1, a hash reference.
9534:
9535: ($udom and $uname are optional)
9536:
9537: =item *
9538:
9539: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
9540: ($udom and $uname are optional)
9541:
9542: =item *
9543:
9544: cput($namespace,$storehash,$udom,$uname) : critical put
9545: ($udom and $uname are optional)
9546:
9547: =item *
9548:
9549: newput($namespace,$storehash,$udom,$uname) :
9550:
9551: Attempts to store the items in the $storehash, but only if they don't
9552: currently exist, if this succeeds you can be certain that you have
9553: successfully created a new key value pair in the $namespace db.
9554:
9555:
9556: Args:
9557: $namespace: name of database to store values to
9558: $storehash: hashref to store to the db
9559: $udom: (optional) domain of user containing the db
9560: $uname: (optional) name of user caontaining the db
9561:
9562: Returns:
9563: 'ok' -> succeeded in storing all keys of $storehash
9564: 'key_exists: <key>' -> failed to anything out of $storehash, as at
9565: least <key> already existed in the db (other
9566: requested keys may also already exist)
9567: 'error: <msg>' -> unable to tie the DB or other erorr occured
9568: 'con_lost' -> unable to contact request server
9569: 'refused' -> action was not allowed by remote machine
9570:
9571:
9572: =item *
9573:
9574: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
9575: reference filled in from namesp (encrypts the return communication)
9576: ($udom and $uname are optional)
9577:
9578: =item *
9579:
9580: log($udom,$name,$home,$message) : write to permanent log for user; use
9581: critical subroutine
9582:
9583: =item *
9584:
9585: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
9586: array reference filled in from namespace found in domain level on either
9587: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
9588:
9589: =item *
9590:
9591: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
9592: domain level either on specified domain server ($uhome) or primary domain
9593: server ($udom and $uhome are optional)
9594:
9595: =item *
9596:
9597: get_domain_defaults($target_domain) : returns hash with defaults for
9598: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
9599: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
9600: or localauth), initial password or a kerberos realm, language (e.g., en-us).
9601: Values are retrieved from cache (if current), or from domain's configuration.db
9602: (if available), or lastly from values in lonTabs/dns_domain,tab,
9603: or lonTabs/domain.tab.
9604:
9605: %domdefaults = &get_auth_defaults($target_domain);
9606:
9607: =back
9608:
9609: =head2 Network Status Functions
9610:
9611: =over 4
9612:
9613: =item *
9614:
9615: dirlist($uri) : return directory list based on URI
9616:
9617: =item *
9618:
9619: spareserver() : find server with least workload from spare.tab
9620:
9621: =back
9622:
9623: =head2 Apache Request
9624:
9625: =over 4
9626:
9627: =item *
9628:
9629: ssi($url,%hash) : server side include, does a complete request cycle on url to
9630: localhost, posts hash
9631:
9632: =back
9633:
9634: =head2 Data to String to Data
9635:
9636: =over 4
9637:
9638: =item *
9639:
9640: hash2str(%hash) : convert a hash into a string complete with escaping and '='
9641: and '&' separators, supports elements that are arrayrefs and hashrefs
9642:
9643: =item *
9644:
9645: hashref2str($hashref) : convert a hashref into a string complete with
9646: escaping and '=' and '&' separators, supports elements that are
9647: arrayrefs and hashrefs
9648:
9649: =item *
9650:
9651: arrayref2str($arrayref) : convert an arrayref into a string complete
9652: with escaping and '&' separators, supports elements that are arrayrefs
9653: and hashrefs
9654:
9655: =item *
9656:
9657: str2hash($string) : convert string to hash using unescaping and
9658: splitting on '=' and '&', supports elements that are arrayrefs and
9659: hashrefs
9660:
9661: =item *
9662:
9663: str2array($string) : convert string to hash using unescaping and
9664: splitting on '&', supports elements that are arrayrefs and hashrefs
9665:
9666: =back
9667:
9668: =head2 Logging Routines
9669:
9670: =over 4
9671:
9672: These routines allow one to make log messages in the lonnet.log and
9673: lonnet.perm logfiles.
9674:
9675: =item *
9676:
9677: logtouch() : make sure the logfile, lonnet.log, exists
9678:
9679: =item *
9680:
9681: logthis() : append message to the normal lonnet.log file, it gets
9682: preiodically rolled over and deleted.
9683:
9684: =item *
9685:
9686: logperm() : append a permanent message to lonnet.perm.log, this log
9687: file never gets deleted by any automated portion of the system, only
9688: messages of critical importance should go in here.
9689:
9690: =back
9691:
9692: =head2 General File Helper Routines
9693:
9694: =over 4
9695:
9696: =item *
9697:
9698: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
9699: (a) files in /uploaded
9700: (i) If a local copy of the file exists -
9701: compares modification date of local copy with last-modified date for
9702: definitive version stored on home server for course. If local copy is
9703: stale, requests a new version from the home server and stores it.
9704: If the original has been removed from the home server, then local copy
9705: is unlinked.
9706: (ii) If local copy does not exist -
9707: requests the file from the home server and stores it.
9708:
9709: If $caller is 'uploadrep':
9710: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
9711: for request for files originally uploaded via DOCS.
9712: - returns 'ok' if fresh local copy now available, -1 otherwise.
9713:
9714: Otherwise:
9715: This indicates a call from the content generation phase of the request.
9716: - returns the entire contents of the file or -1.
9717:
9718: (b) files in /res
9719: - returns the entire contents of a file or -1;
9720: it properly subscribes to and replicates the file if neccessary.
9721:
9722:
9723: =item *
9724:
9725: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
9726: reference
9727:
9728: returns either a stat() list of data about the file or an empty list
9729: if the file doesn't exist or couldn't find out about it (connection
9730: problems or user unknown)
9731:
9732: =item *
9733:
9734: filelocation($dir,$file) : returns file system location of a file
9735: based on URI; meant to be "fairly clean" absolute reference, $dir is a
9736: directory that relative $file lookups are to looked in ($dir of /a/dir
9737: and a file of ../bob will become /a/bob)
9738:
9739: =item *
9740:
9741: hreflocation($dir,$file) : returns file system location or a URL; same as
9742: filelocation except for hrefs
9743:
9744: =item *
9745:
9746: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
9747:
9748: =back
9749:
9750: =head2 Usererfile file routines (/uploaded*)
9751:
9752: =over 4
9753:
9754: =item *
9755:
9756: userfileupload(): main rotine for putting a file in a user or course's
9757: filespace, arguments are,
9758:
9759: formname - required - this is the name of the element in $env where the
9760: filename, and the contents of the file to create/modifed exist
9761: the filename is in $env{'form.'.$formname.'.filename'} and the
9762: contents of the file is located in $env{'form.'.$formname}
9763: coursedoc - if true, store the file in the course of the active role
9764: of the current user
9765: subdir - required - subdirectory to put the file in under ../userfiles/
9766: if undefined, it will be placed in "unknown"
9767:
9768: (This routine calls clean_filename() to remove any dangerous
9769: characters from the filename, and then calls finuserfileupload() to
9770: complete the transaction)
9771:
9772: returns either the url of the uploaded file (/uploaded/....) if successful
9773: and /adm/notfound.html if unsuccessful
9774:
9775: =item *
9776:
9777: clean_filename(): routine for cleaing a filename up for storage in
9778: userfile space, argument is:
9779:
9780: filename - proposed filename
9781:
9782: returns: the new clean filename
9783:
9784: =item *
9785:
9786: finishuserfileupload(): routine that creaes and sends the file to
9787: userspace, probably shouldn't be called directly
9788:
9789: docuname: username or courseid of destination for the file
9790: docudom: domain of user/course of destination for the file
9791: formname: same as for userfileupload()
9792: fname: filename (inculding subdirectories) for the file
9793:
9794: returns either the url of the uploaded file (/uploaded/....) if successful
9795: and /adm/notfound.html if unsuccessful
9796:
9797: =item *
9798:
9799: renameuserfile(): renames an existing userfile to a new name
9800:
9801: Args:
9802: docuname: username or courseid of destination for the file
9803: docudom: domain of user/course of destination for the file
9804: old: current file name (including any subdirs under userfiles)
9805: new: desired file name (including any subdirs under userfiles)
9806:
9807: =item *
9808:
9809: mkdiruserfile(): creates a directory is a userfiles dir
9810:
9811: Args:
9812: docuname: username or courseid of destination for the file
9813: docudom: domain of user/course of destination for the file
9814: dir: dir to create (including any subdirs under userfiles)
9815:
9816: =item *
9817:
9818: removeuserfile(): removes a file that exists in userfiles
9819:
9820: Args:
9821: docuname: username or courseid of destination for the file
9822: docudom: domain of user/course of destination for the file
9823: fname: filname to delete (including any subdirs under userfiles)
9824:
9825: =item *
9826:
9827: removeuploadedurl(): convience function for removeuserfile()
9828:
9829: Args:
9830: url: a full /uploaded/... url to delete
9831:
9832: =item *
9833:
9834: get_portfile_permissions():
9835: Args:
9836: domain: domain of user or course contain the portfolio files
9837: user: name of user or num of course contain the portfolio files
9838: Returns:
9839: hashref of a dump of the proper file_permissions.db
9840:
9841:
9842: =item *
9843:
9844: get_access_controls():
9845:
9846: Args:
9847: current_permissions: the hash ref returned from get_portfile_permissions()
9848: group: (optional) the group you want the files associated with
9849: file: (optional) the file you want access info on
9850:
9851: Returns:
9852: a hash (keys are file names) of hashes containing
9853: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
9854: values are XML containing access control settings (see below)
9855:
9856: Internal notes:
9857:
9858: access controls are stored in file_permissions.db as key=value pairs.
9859: key -> path to file/file_name\0uniqueID:scope_end_start
9860: where scope -> public,guest,course,group,domains or users.
9861: end -> UNIX time for end of access (0 -> no end date)
9862: start -> UNIX time for start of access
9863:
9864: value -> XML description of access control
9865: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
9866: <start></start>
9867: <end></end>
9868:
9869: <password></password> for scope type = guest
9870:
9871: <domain></domain> for scope type = course or group
9872: <number></number>
9873: <roles id="">
9874: <role></role>
9875: <access></access>
9876: <section></section>
9877: <group></group>
9878: </roles>
9879:
9880: <dom></dom> for scope type = domains
9881:
9882: <users> for scope type = users
9883: <user>
9884: <uname></uname>
9885: <udom></udom>
9886: </user>
9887: </users>
9888: </scope>
9889:
9890: Access data is also aggregated for each file in an additional key=value pair:
9891: key -> path to file/file_name\0accesscontrol
9892: value -> reference to hash
9893: hash contains key = value pairs
9894: where key = uniqueID:scope_end_start
9895: value = UNIX time record was last updated
9896:
9897: Used to improve speed of look-ups of access controls for each file.
9898:
9899: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
9900:
9901: modify_access_controls():
9902:
9903: Modifies access controls for a portfolio file
9904: Args
9905: 1. file name
9906: 2. reference to hash of required changes,
9907: 3. domain
9908: 4. username
9909: where domain,username are the domain of the portfolio owner
9910: (either a user or a course)
9911:
9912: Returns:
9913: 1. result of additions or updates ('ok' or 'error', with error message).
9914: 2. result of deletions ('ok' or 'error', with error message).
9915: 3. reference to hash of any new or updated access controls.
9916: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
9917: key = integer (inbound ID)
9918: value = uniqueID
9919:
9920: =back
9921:
9922: =head2 HTTP Helper Routines
9923:
9924: =over 4
9925:
9926: =item *
9927:
9928: escape() : unpack non-word characters into CGI-compatible hex codes
9929:
9930: =item *
9931:
9932: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
9933:
9934: =back
9935:
9936: =head1 PRIVATE SUBROUTINES
9937:
9938: =head2 Underlying communication routines (Shouldn't call)
9939:
9940: =over 4
9941:
9942: =item *
9943:
9944: subreply() : tries to pass a message to lonc, returns con_lost if incapable
9945:
9946: =item *
9947:
9948: reply() : uses subreply to send a message to remote machine, logs all failures
9949:
9950: =item *
9951:
9952: critical() : passes a critical message to another server; if cannot
9953: get through then place message in connection buffer directory and
9954: returns con_delayed, if incapable of saving message, returns
9955: con_failed
9956:
9957: =item *
9958:
9959: reconlonc() : tries to reconnect lonc client processes.
9960:
9961: =back
9962:
9963: =head2 Resource Access Logging
9964:
9965: =over 4
9966:
9967: =item *
9968:
9969: flushcourselogs() : flush (save) buffer logs and access logs
9970:
9971: =item *
9972:
9973: courselog($what) : save message for course in hash
9974:
9975: =item *
9976:
9977: courseacclog($what) : save message for course using &courselog(). Perform
9978: special processing for specific resource types (problems, exams, quizzes, etc).
9979:
9980: =item *
9981:
9982: goodbye() : flush course logs and log shutting down; it is called in srm.conf
9983: as a PerlChildExitHandler
9984:
9985: =back
9986:
9987: =head2 Other
9988:
9989: =over 4
9990:
9991: =item *
9992:
9993: symblist($mapname,%newhash) : update symbolic storage links
9994:
9995: =back
9996:
9997: =cut
9998:
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