File:
[LON-CAPA] /
loncom /
lonnet /
perl /
lonnet.pm
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1.957:
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Wed Apr 30 22:42:59 2008 UTC (16 years, 3 months ago) by
raeburn
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Bug 5176. keep a record of role changes in a course in nohist_rolelog.db and group membership changes in a course in nohist_groupslog.db.
- &instructor_log() takes additional (optional) args - $cnum and $cdom, for use in cases where role changes to be logged do not occur in course context (e.g., Auto-enrollment, Batch course creation.
- Additional arguments ($selfenroll and $context) added for following subroutines:
- &courserolelog() added to log changes in course roles or groups.
- &modify_group_roles()
- &modify_student_enrollment()
- &assigncustomrole()
- &revokerole()
- &revokecustomrole()
which all call &assignrole() so that information about selfenrollment, and calling context can be included in record in nohist_rolelog.db.
- Additional argument ($context) added for &assignrole.
- &courserolelog() called by &assignrole.
- Documentation updates.
- Add some missing apostrophes to documentation
1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.957 2008/04/30 22:42:59 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: package Apache::lonnet;
31:
32: use strict;
33: use LWP::UserAgent();
34: use HTTP::Date;
35: # use Date::Parse;
36: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
37: $_64bit %env);
38:
39: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
40: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
41: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
42: %courseownerbuf, %coursetypebuf);
43:
44: use IO::Socket;
45: use GDBM_File;
46: use HTML::LCParser;
47: use Fcntl qw(:flock);
48: use Storable qw(thaw nfreeze);
49: use Time::HiRes qw( gettimeofday tv_interval );
50: use Cache::Memcached;
51: use Digest::MD5;
52: use Math::Random;
53: use LONCAPA qw(:DEFAULT :match);
54: use LONCAPA::Configuration;
55:
56: my $readit;
57: my $max_connection_retries = 10; # Or some such value.
58:
59: require Exporter;
60:
61: our @ISA = qw (Exporter);
62: our @EXPORT = qw(%env);
63:
64: =pod
65:
66: =head1 Package Variables
67:
68: These are largely undocumented, so if you decipher one please note it here.
69:
70: =over 4
71:
72: =item $processmarker
73:
74: Contains the time this process was started and this servers host id.
75:
76: =item $dumpcount
77:
78: Counts the number of times a message log flush has been attempted (regardless
79: of success) by this process. Used as part of the filename when messages are
80: delayed.
81:
82: =back
83:
84: =cut
85:
86:
87: # --------------------------------------------------------------------- Logging
88: {
89: my $logid;
90: sub instructor_log {
91: my ($hash_name,$storehash,$delflag,$uname,$udom,$cnum,$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: # ------------------------------------------ Find out current server userload
530: sub userload {
531: my $numusers=0;
532: {
533: opendir(LONIDS,$perlvar{'lonIDsDir'});
534: my $filename;
535: my $curtime=time;
536: while ($filename=readdir(LONIDS)) {
537: next if ($filename eq '.' || $filename eq '..');
538: next if ($filename =~ /publicuser_\d+\.id/);
539: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
540: if ($curtime-$mtime < 1800) { $numusers++; }
541: }
542: closedir(LONIDS);
543: }
544: my $userloadpercent=0;
545: my $maxuserload=$perlvar{'lonUserLoadLim'};
546: if ($maxuserload) {
547: $userloadpercent=100*$numusers/$maxuserload;
548: }
549: $userloadpercent=sprintf("%.2f",$userloadpercent);
550: return $userloadpercent;
551: }
552:
553: # ------------------------------------------ Fight off request when overloaded
554:
555: sub overloaderror {
556: my ($r,$checkserver)=@_;
557: unless ($checkserver) { $checkserver=$perlvar{'lonHostID'}; }
558: my $loadavg;
559: if ($checkserver eq $perlvar{'lonHostID'}) {
560: open(my $loadfile,'/proc/loadavg');
561: $loadavg=<$loadfile>;
562: $loadavg =~ s/\s.*//g;
563: $loadavg = 100*$loadavg/$perlvar{'lonLoadLim'};
564: close($loadfile);
565: } else {
566: $loadavg=&reply('load',$checkserver);
567: }
568: my $overload=$loadavg-100;
569: if ($overload>0) {
570: $r->err_headers_out->{'Retry-After'}=$overload;
571: $r->log_error('Overload of '.$overload.' on '.$checkserver);
572: return 413;
573: }
574: return '';
575: }
576:
577: # ------------------------------ Find server with least workload from spare.tab
578:
579: sub spareserver {
580: my ($loadpercent,$userloadpercent,$want_server_name) = @_;
581: my $spare_server;
582: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
583: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
584: : $userloadpercent;
585:
586: foreach my $try_server (@{ $spareid{'primary'} }) {
587: ($spare_server, $lowest_load) =
588: &compare_server_load($try_server, $spare_server, $lowest_load);
589: }
590:
591: my $found_server = ($spare_server ne '' && $lowest_load < 100);
592:
593: if (!$found_server) {
594: foreach my $try_server (@{ $spareid{'default'} }) {
595: ($spare_server, $lowest_load) =
596: &compare_server_load($try_server, $spare_server, $lowest_load);
597: }
598: }
599:
600: if (!$want_server_name) {
601: $spare_server="http://".&hostname($spare_server);
602: }
603: return $spare_server;
604: }
605:
606: sub compare_server_load {
607: my ($try_server, $spare_server, $lowest_load) = @_;
608:
609: my $loadans = &reply('load', $try_server);
610: my $userloadans = &reply('userload',$try_server);
611:
612: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
613: next; #didn't get a number from the server
614: }
615:
616: my $load;
617: if ($loadans =~ /\d/) {
618: if ($userloadans =~ /\d/) {
619: #both are numbers, pick the bigger one
620: $load = ($loadans > $userloadans) ? $loadans
621: : $userloadans;
622: } else {
623: $load = $loadans;
624: }
625: } else {
626: $load = $userloadans;
627: }
628:
629: if (($load =~ /\d/) && ($load < $lowest_load)) {
630: $spare_server = $try_server;
631: $lowest_load = $load;
632: }
633: return ($spare_server,$lowest_load);
634: }
635:
636: # --------------------------- ask offload servers if user already has a session
637: sub find_existing_session {
638: my ($udom,$uname) = @_;
639: foreach my $try_server (@{ $spareid{'primary'} },
640: @{ $spareid{'default'} }) {
641: return $try_server if (&has_user_session($try_server, $udom, $uname));
642: }
643: return;
644: }
645:
646: # -------------------------------- ask if server already has a session for user
647: sub has_user_session {
648: my ($lonid,$udom,$uname) = @_;
649: my $result = &reply(join(':','userhassession',
650: map {&escape($_)} ($udom,$uname)),$lonid);
651: return 1 if ($result eq 'ok');
652:
653: return 0;
654: }
655:
656: # --------------------------------------------- Try to change a user's password
657:
658: sub changepass {
659: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
660: $currentpass = &escape($currentpass);
661: $newpass = &escape($newpass);
662: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context",
663: $server);
664: if (! $answer) {
665: &logthis("No reply on password change request to $server ".
666: "by $uname in domain $udom.");
667: } elsif ($answer =~ "^ok") {
668: &logthis("$uname in $udom successfully changed their password ".
669: "on $server.");
670: } elsif ($answer =~ "^pwchange_failure") {
671: &logthis("$uname in $udom was unable to change their password ".
672: "on $server. The action was blocked by either lcpasswd ".
673: "or pwchange");
674: } elsif ($answer =~ "^non_authorized") {
675: &logthis("$uname in $udom did not get their password correct when ".
676: "attempting to change it on $server.");
677: } elsif ($answer =~ "^auth_mode_error") {
678: &logthis("$uname in $udom attempted to change their password despite ".
679: "not being locally or internally authenticated on $server.");
680: } elsif ($answer =~ "^unknown_user") {
681: &logthis("$uname in $udom attempted to change their password ".
682: "on $server but were unable to because $server is not ".
683: "their home server.");
684: } elsif ($answer =~ "^refused") {
685: &logthis("$server refused to change $uname in $udom password because ".
686: "it was sent an unencrypted request to change the password.");
687: }
688: return $answer;
689: }
690:
691: # ----------------------- Try to determine user's current authentication scheme
692:
693: sub queryauthenticate {
694: my ($uname,$udom)=@_;
695: my $uhome=&homeserver($uname,$udom);
696: if (!$uhome) {
697: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
698: return 'no_host';
699: }
700: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
701: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
702: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
703: }
704: return $answer;
705: }
706:
707: # --------- Try to authenticate user from domain's lib servers (first this one)
708:
709: sub authenticate {
710: my ($uname,$upass,$udom,$checkdefauth)=@_;
711: $upass=&escape($upass);
712: $uname= &LONCAPA::clean_username($uname);
713: my $uhome=&homeserver($uname,$udom,1);
714: my $newhome;
715: if ((!$uhome) || ($uhome eq 'no_host')) {
716: # Maybe the machine was offline and only re-appeared again recently?
717: &reconlonc();
718: # One more
719: $uhome=&homeserver($uname,$udom,1);
720: if (($uhome eq 'no_host') && $checkdefauth) {
721: if (defined(&domain($udom,'primary'))) {
722: $newhome=&domain($udom,'primary');
723: }
724: if ($newhome ne '') {
725: $uhome = $newhome;
726: }
727: }
728: if ((!$uhome) || ($uhome eq 'no_host')) {
729: &logthis("User $uname at $udom is unknown in authenticate");
730: return 'no_host';
731: }
732: }
733: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth",$uhome);
734: if ($answer eq 'authorized') {
735: if ($newhome) {
736: &logthis("User $uname at $udom authorized by $uhome, but needs account");
737: return 'no_account_on_host';
738: } else {
739: &logthis("User $uname at $udom authorized by $uhome");
740: return $uhome;
741: }
742: }
743: if ($answer eq 'non_authorized') {
744: &logthis("User $uname at $udom rejected by $uhome");
745: return 'no_host';
746: }
747: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
748: return 'no_host';
749: }
750:
751: # ---------------------- Find the homebase for a user from domain's lib servers
752:
753: my %homecache;
754: sub homeserver {
755: my ($uname,$udom,$ignoreBadCache)=@_;
756: my $index="$uname:$udom";
757:
758: if (exists($homecache{$index})) { return $homecache{$index}; }
759:
760: my %servers = &get_servers($udom,'library');
761: foreach my $tryserver (keys(%servers)) {
762: next if ($ignoreBadCache ne 'true' &&
763: exists($badServerCache{$tryserver}));
764:
765: my $answer=reply("home:$udom:$uname",$tryserver);
766: if ($answer eq 'found') {
767: delete($badServerCache{$tryserver});
768: return $homecache{$index}=$tryserver;
769: } elsif ($answer eq 'no_host') {
770: $badServerCache{$tryserver}=1;
771: }
772: }
773: return 'no_host';
774: }
775:
776: # ------------------------------------- Find the usernames behind a list of IDs
777:
778: sub idget {
779: my ($udom,@ids)=@_;
780: my %returnhash=();
781:
782: my %servers = &get_servers($udom,'library');
783: foreach my $tryserver (keys(%servers)) {
784: my $idlist=join('&',@ids);
785: $idlist=~tr/A-Z/a-z/;
786: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
787: my @answer=();
788: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
789: @answer=split(/\&/,$reply);
790: } ;
791: my $i;
792: for ($i=0;$i<=$#ids;$i++) {
793: if ($answer[$i]) {
794: $returnhash{$ids[$i]}=$answer[$i];
795: }
796: }
797: }
798: return %returnhash;
799: }
800:
801: # ------------------------------------- Find the IDs behind a list of usernames
802:
803: sub idrget {
804: my ($udom,@unames)=@_;
805: my %returnhash=();
806: foreach my $uname (@unames) {
807: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
808: }
809: return %returnhash;
810: }
811:
812: # ------------------------------- Store away a list of names and associated IDs
813:
814: sub idput {
815: my ($udom,%ids)=@_;
816: my %servers=();
817: foreach my $uname (keys(%ids)) {
818: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
819: my $uhom=&homeserver($uname,$udom);
820: if ($uhom ne 'no_host') {
821: my $id=&escape($ids{$uname});
822: $id=~tr/A-Z/a-z/;
823: my $esc_unam=&escape($uname);
824: if ($servers{$uhom}) {
825: $servers{$uhom}.='&'.$id.'='.$esc_unam;
826: } else {
827: $servers{$uhom}=$id.'='.$esc_unam;
828: }
829: }
830: }
831: foreach my $server (keys(%servers)) {
832: &critical('idput:'.$udom.':'.$servers{$server},$server);
833: }
834: }
835:
836: # ------------------------------------------- get items from domain db files
837:
838: sub get_dom {
839: my ($namespace,$storearr,$udom,$uhome)=@_;
840: my $items='';
841: foreach my $item (@$storearr) {
842: $items.=&escape($item).'&';
843: }
844: $items=~s/\&$//;
845: if (!$udom) {
846: $udom=$env{'user.domain'};
847: if (defined(&domain($udom,'primary'))) {
848: $uhome=&domain($udom,'primary');
849: } else {
850: undef($uhome);
851: }
852: } else {
853: if (!$uhome) {
854: if (defined(&domain($udom,'primary'))) {
855: $uhome=&domain($udom,'primary');
856: }
857: }
858: }
859: if ($udom && $uhome && ($uhome ne 'no_host')) {
860: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
861: my %returnhash;
862: if ($rep eq '' || $rep =~ /^error: 2 /) {
863: return %returnhash;
864: }
865: my @pairs=split(/\&/,$rep);
866: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
867: return @pairs;
868: }
869: my $i=0;
870: foreach my $item (@$storearr) {
871: $returnhash{$item}=&thaw_unescape($pairs[$i]);
872: $i++;
873: }
874: return %returnhash;
875: } else {
876: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
877: }
878: }
879:
880: # -------------------------------------------- put items in domain db files
881:
882: sub put_dom {
883: my ($namespace,$storehash,$udom,$uhome)=@_;
884: if (!$udom) {
885: $udom=$env{'user.domain'};
886: if (defined(&domain($udom,'primary'))) {
887: $uhome=&domain($udom,'primary');
888: } else {
889: undef($uhome);
890: }
891: } else {
892: if (!$uhome) {
893: if (defined(&domain($udom,'primary'))) {
894: $uhome=&domain($udom,'primary');
895: }
896: }
897: }
898: if ($udom && $uhome && ($uhome ne 'no_host')) {
899: my $items='';
900: foreach my $item (keys(%$storehash)) {
901: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
902: }
903: $items=~s/\&$//;
904: return &reply("putdom:$udom:$namespace:$items",$uhome);
905: } else {
906: &logthis("put_dom failed - no homeserver and/or domain");
907: }
908: }
909:
910: sub retrieve_inst_usertypes {
911: my ($udom) = @_;
912: my (%returnhash,@order);
913: if (defined(&domain($udom,'primary'))) {
914: my $uhome=&domain($udom,'primary');
915: my $rep=&reply("inst_usertypes:$udom",$uhome);
916: my ($hashitems,$orderitems) = split(/:/,$rep);
917: my @pairs=split(/\&/,$hashitems);
918: foreach my $item (@pairs) {
919: my ($key,$value)=split(/=/,$item,2);
920: $key = &unescape($key);
921: next if ($key =~ /^error: 2 /);
922: $returnhash{$key}=&thaw_unescape($value);
923: }
924: my @esc_order = split(/\&/,$orderitems);
925: foreach my $item (@esc_order) {
926: push(@order,&unescape($item));
927: }
928: } else {
929: &logthis("get_dom failed - no primary domain server for $udom");
930: }
931: return (\%returnhash,\@order);
932: }
933:
934: sub is_domainimage {
935: my ($url) = @_;
936: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
937: if (&domain($1) ne '') {
938: return '1';
939: }
940: }
941: return;
942: }
943:
944: sub inst_directory_query {
945: my ($srch) = @_;
946: my $udom = $srch->{'srchdomain'};
947: my %results;
948: my $homeserver = &domain($udom,'primary');
949: my $outcome;
950: if ($homeserver ne '') {
951: my $queryid=&reply("querysend:instdirsearch:".
952: &escape($srch->{'srchby'}).':'.
953: &escape($srch->{'srchterm'}).':'.
954: &escape($srch->{'srchtype'}),$homeserver);
955: my $host=&hostname($homeserver);
956: if ($queryid !~/^\Q$host\E\_/) {
957: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
958: return;
959: }
960: my $response = &get_query_reply($queryid);
961: my $maxtries = 5;
962: my $tries = 1;
963: while (($response=~/^timeout/) && ($tries < $maxtries)) {
964: $response = &get_query_reply($queryid);
965: $tries ++;
966: }
967:
968: if (!&error($response) && $response ne 'refused') {
969: if ($response eq 'unavailable') {
970: $outcome = $response;
971: } else {
972: $outcome = 'ok';
973: my @matches = split(/\n/,$response);
974: foreach my $match (@matches) {
975: my ($key,$value) = split(/=/,$match);
976: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
977: }
978: }
979: }
980: }
981: return ($outcome,%results);
982: }
983:
984: sub usersearch {
985: my ($srch) = @_;
986: my $dom = $srch->{'srchdomain'};
987: my %results;
988: my %libserv = &all_library();
989: my $query = 'usersearch';
990: foreach my $tryserver (keys(%libserv)) {
991: if (&host_domain($tryserver) eq $dom) {
992: my $host=&hostname($tryserver);
993: my $queryid=
994: &reply("querysend:".&escape($query).':'.
995: &escape($srch->{'srchby'}).':'.
996: &escape($srch->{'srchtype'}).':'.
997: &escape($srch->{'srchterm'}),$tryserver);
998: if ($queryid !~/^\Q$host\E\_/) {
999: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1000: next;
1001: }
1002: my $reply = &get_query_reply($queryid);
1003: my $maxtries = 1;
1004: my $tries = 1;
1005: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1006: $reply = &get_query_reply($queryid);
1007: $tries ++;
1008: }
1009: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1010: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1011: } else {
1012: my @matches;
1013: if ($reply =~ /\n/) {
1014: @matches = split(/\n/,$reply);
1015: } else {
1016: @matches = split(/\&/,$reply);
1017: }
1018: foreach my $match (@matches) {
1019: my ($uname,$udom,%userhash);
1020: foreach my $entry (split(/:/,$match)) {
1021: my ($key,$value) =
1022: map {&unescape($_);} split(/=/,$entry);
1023: $userhash{$key} = $value;
1024: if ($key eq 'username') {
1025: $uname = $value;
1026: } elsif ($key eq 'domain') {
1027: $udom = $value;
1028: }
1029: }
1030: $results{$uname.':'.$udom} = \%userhash;
1031: }
1032: }
1033: }
1034: }
1035: return %results;
1036: }
1037:
1038: sub get_instuser {
1039: my ($udom,$uname,$id) = @_;
1040: my $homeserver = &domain($udom,'primary');
1041: my ($outcome,%results);
1042: if ($homeserver ne '') {
1043: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1044: &escape($id).':'.&escape($udom),$homeserver);
1045: my $host=&hostname($homeserver);
1046: if ($queryid !~/^\Q$host\E\_/) {
1047: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1048: return;
1049: }
1050: my $response = &get_query_reply($queryid);
1051: my $maxtries = 5;
1052: my $tries = 1;
1053: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1054: $response = &get_query_reply($queryid);
1055: $tries ++;
1056: }
1057: if (!&error($response) && $response ne 'refused') {
1058: if ($response eq 'unavailable') {
1059: $outcome = $response;
1060: } else {
1061: $outcome = 'ok';
1062: my @matches = split(/\n/,$response);
1063: foreach my $match (@matches) {
1064: my ($key,$value) = split(/=/,$match);
1065: $results{&unescape($key)} = &thaw_unescape($value);
1066: }
1067: }
1068: }
1069: }
1070: my %userinfo;
1071: if (ref($results{$uname}) eq 'HASH') {
1072: %userinfo = %{$results{$uname}};
1073: }
1074: return ($outcome,%userinfo);
1075: }
1076:
1077: sub inst_rulecheck {
1078: my ($udom,$uname,$id,$item,$rules) = @_;
1079: my %returnhash;
1080: if ($udom ne '') {
1081: if (ref($rules) eq 'ARRAY') {
1082: @{$rules} = map {&escape($_);} (@{$rules});
1083: my $rulestr = join(':',@{$rules});
1084: my $homeserver=&domain($udom,'primary');
1085: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1086: my $response;
1087: if ($item eq 'username') {
1088: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1089: ':'.&escape($uname).':'.$rulestr,
1090: $homeserver));
1091: } elsif ($item eq 'id') {
1092: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1093: ':'.&escape($id).':'.$rulestr,
1094: $homeserver));
1095: } elsif ($item eq 'selfcreate') {
1096: $response=&unescape(&reply('instselfcreatecheck:'.
1097: &escape($udom).':'.&escape($uname).
1098: ':'.$rulestr,$homeserver));
1099: }
1100: if ($response ne 'refused') {
1101: my @pairs=split(/\&/,$response);
1102: foreach my $item (@pairs) {
1103: my ($key,$value)=split(/=/,$item,2);
1104: $key = &unescape($key);
1105: next if ($key =~ /^error: 2 /);
1106: $returnhash{$key}=&thaw_unescape($value);
1107: }
1108: }
1109: }
1110: }
1111: }
1112: return %returnhash;
1113: }
1114:
1115: sub inst_userrules {
1116: my ($udom,$check) = @_;
1117: my (%ruleshash,@ruleorder);
1118: if ($udom ne '') {
1119: my $homeserver=&domain($udom,'primary');
1120: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1121: my $response;
1122: if ($check eq 'id') {
1123: $response=&reply('instidrules:'.&escape($udom),
1124: $homeserver);
1125: } elsif ($check eq 'email') {
1126: $response=&reply('instemailrules:'.&escape($udom),
1127: $homeserver);
1128: } else {
1129: $response=&reply('instuserrules:'.&escape($udom),
1130: $homeserver);
1131: }
1132: if (($response ne 'refused') && ($response ne 'error') &&
1133: ($response ne 'unknown_cmd') &&
1134: ($response ne 'no_such_host')) {
1135: my ($hashitems,$orderitems) = split(/:/,$response);
1136: my @pairs=split(/\&/,$hashitems);
1137: foreach my $item (@pairs) {
1138: my ($key,$value)=split(/=/,$item,2);
1139: $key = &unescape($key);
1140: next if ($key =~ /^error: 2 /);
1141: $ruleshash{$key}=&thaw_unescape($value);
1142: }
1143: my @esc_order = split(/\&/,$orderitems);
1144: foreach my $item (@esc_order) {
1145: push(@ruleorder,&unescape($item));
1146: }
1147: }
1148: }
1149: }
1150: return (\%ruleshash,\@ruleorder);
1151: }
1152:
1153: # ------------------------- Get Authentication and Language Defaults for Domain
1154:
1155: sub get_domain_defaults {
1156: my ($domain) = @_;
1157: my $cachetime = 60*60*24;
1158: my ($defauthtype,$defautharg,$deflang);
1159: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1160: if (defined($cached)) {
1161: if (ref($result) eq 'HASH') {
1162: return %{$result};
1163: }
1164: }
1165: my %domdefaults;
1166: my %domconfig =
1167: &Apache::lonnet::get_dom('configuration',['defaults'],$domain);
1168: if (ref($domconfig{'defaults'}) eq 'HASH') {
1169: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
1170: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
1171: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
1172: } else {
1173: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
1174: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
1175: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
1176: }
1177: &Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,
1178: $cachetime);
1179: return %domdefaults;
1180: }
1181:
1182: # --------------------------------------------------- Assign a key to a student
1183:
1184: sub assign_access_key {
1185: #
1186: # a valid key looks like uname:udom#comments
1187: # comments are being appended
1188: #
1189: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
1190: $kdom=
1191: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
1192: $knum=
1193: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
1194: $cdom=
1195: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1196: $cnum=
1197: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1198: $udom=$env{'user.name'} unless (defined($udom));
1199: $uname=$env{'user.domain'} unless (defined($uname));
1200: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
1201: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
1202: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
1203: # assigned to this person
1204: # - this should not happen,
1205: # unless something went wrong
1206: # the first time around
1207: # ready to assign
1208: $logentry=$1.'; '.$logentry;
1209: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
1210: $kdom,$knum) eq 'ok') {
1211: # key now belongs to user
1212: my $envkey='key.'.$cdom.'_'.$cnum;
1213: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
1214: &appenv({'environment.'.$envkey => $ckey});
1215: return 'ok';
1216: } else {
1217: return
1218: 'error: Count not permanently assign key, will need to be re-entered later.';
1219: }
1220: } else {
1221: return 'error: Could not assign key, try again later.';
1222: }
1223: } elsif (!$existing{$ckey}) {
1224: # the key does not exist
1225: return 'error: The key does not exist';
1226: } else {
1227: # the key is somebody else's
1228: return 'error: The key is already in use';
1229: }
1230: }
1231:
1232: # ------------------------------------------ put an additional comment on a key
1233:
1234: sub comment_access_key {
1235: #
1236: # a valid key looks like uname:udom#comments
1237: # comments are being appended
1238: #
1239: my ($ckey,$cdom,$cnum,$logentry)=@_;
1240: $cdom=
1241: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1242: $cnum=
1243: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1244: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1245: if ($existing{$ckey}) {
1246: $existing{$ckey}.='; '.$logentry;
1247: # ready to assign
1248: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
1249: $cdom,$cnum) eq 'ok') {
1250: return 'ok';
1251: } else {
1252: return 'error: Count not store comment.';
1253: }
1254: } else {
1255: # the key does not exist
1256: return 'error: The key does not exist';
1257: }
1258: }
1259:
1260: # ------------------------------------------------------ Generate a set of keys
1261:
1262: sub generate_access_keys {
1263: my ($number,$cdom,$cnum,$logentry)=@_;
1264: $cdom=
1265: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1266: $cnum=
1267: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1268: unless (&allowed('mky',$cdom)) { return 0; }
1269: unless (($cdom) && ($cnum)) { return 0; }
1270: if ($number>10000) { return 0; }
1271: sleep(2); # make sure don't get same seed twice
1272: srand(time()^($$+($$<<15))); # from "Programming Perl"
1273: my $total=0;
1274: for (my $i=1;$i<=$number;$i++) {
1275: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
1276: sprintf("%lx",int(100000*rand)).'-'.
1277: sprintf("%lx",int(100000*rand));
1278: $newkey=~s/1/g/g; # folks mix up 1 and l
1279: $newkey=~s/0/h/g; # and also 0 and O
1280: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
1281: if ($existing{$newkey}) {
1282: $i--;
1283: } else {
1284: if (&put('accesskeys',
1285: { $newkey => '# generated '.localtime().
1286: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
1287: '; '.$logentry },
1288: $cdom,$cnum) eq 'ok') {
1289: $total++;
1290: }
1291: }
1292: }
1293: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
1294: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
1295: return $total;
1296: }
1297:
1298: # ------------------------------------------------------- Validate an accesskey
1299:
1300: sub validate_access_key {
1301: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
1302: $cdom=
1303: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1304: $cnum=
1305: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1306: $udom=$env{'user.domain'} unless (defined($udom));
1307: $uname=$env{'user.name'} unless (defined($uname));
1308: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1309: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
1310: }
1311:
1312: # ------------------------------------- Find the section of student in a course
1313: sub devalidate_getsection_cache {
1314: my ($udom,$unam,$courseid)=@_;
1315: my $hashid="$udom:$unam:$courseid";
1316: &devalidate_cache_new('getsection',$hashid);
1317: }
1318:
1319: sub courseid_to_courseurl {
1320: my ($courseid) = @_;
1321: #already url style courseid
1322: return $courseid if ($courseid =~ m{^/});
1323:
1324: if (exists($env{'course.'.$courseid.'.num'})) {
1325: my $cnum = $env{'course.'.$courseid.'.num'};
1326: my $cdom = $env{'course.'.$courseid.'.domain'};
1327: return "/$cdom/$cnum";
1328: }
1329:
1330: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
1331: if (exists($courseinfo{'num'})) {
1332: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
1333: }
1334:
1335: return undef;
1336: }
1337:
1338: sub getsection {
1339: my ($udom,$unam,$courseid)=@_;
1340: my $cachetime=1800;
1341:
1342: my $hashid="$udom:$unam:$courseid";
1343: my ($result,$cached)=&is_cached_new('getsection',$hashid);
1344: if (defined($cached)) { return $result; }
1345:
1346: my %Pending;
1347: my %Expired;
1348: #
1349: # Each role can either have not started yet (pending), be active,
1350: # or have expired.
1351: #
1352: # If there is an active role, we are done.
1353: #
1354: # If there is more than one role which has not started yet,
1355: # choose the one which will start sooner
1356: # If there is one role which has not started yet, return it.
1357: #
1358: # If there is more than one expired role, choose the one which ended last.
1359: # If there is a role which has expired, return it.
1360: #
1361: $courseid = &courseid_to_courseurl($courseid);
1362: my %roleshash = &dump('roles',$udom,$unam,$courseid);
1363: foreach my $key (keys(%roleshash)) {
1364: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
1365: my $section=$1;
1366: if ($key eq $courseid.'_st') { $section=''; }
1367: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
1368: my $now=time;
1369: if (defined($end) && $end && ($now > $end)) {
1370: $Expired{$end}=$section;
1371: next;
1372: }
1373: if (defined($start) && $start && ($now < $start)) {
1374: $Pending{$start}=$section;
1375: next;
1376: }
1377: return &do_cache_new('getsection',$hashid,$section,$cachetime);
1378: }
1379: #
1380: # Presumedly there will be few matching roles from the above
1381: # loop and the sorting time will be negligible.
1382: if (scalar(keys(%Pending))) {
1383: my ($time) = sort {$a <=> $b} keys(%Pending);
1384: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
1385: }
1386: if (scalar(keys(%Expired))) {
1387: my @sorted = sort {$a <=> $b} keys(%Expired);
1388: my $time = pop(@sorted);
1389: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
1390: }
1391: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
1392: }
1393:
1394: sub save_cache {
1395: &purge_remembered();
1396: #&Apache::loncommon::validate_page();
1397: undef(%env);
1398: undef($env_loaded);
1399: }
1400:
1401: my $to_remember=-1;
1402: my %remembered;
1403: my %accessed;
1404: my $kicks=0;
1405: my $hits=0;
1406: sub make_key {
1407: my ($name,$id) = @_;
1408: if (length($id) > 65
1409: && length(&escape($id)) > 200) {
1410: $id=length($id).':'.&Digest::MD5::md5_hex($id);
1411: }
1412: return &escape($name.':'.$id);
1413: }
1414:
1415: sub devalidate_cache_new {
1416: my ($name,$id,$debug) = @_;
1417: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
1418: $id=&make_key($name,$id);
1419: $memcache->delete($id);
1420: delete($remembered{$id});
1421: delete($accessed{$id});
1422: }
1423:
1424: sub is_cached_new {
1425: my ($name,$id,$debug) = @_;
1426: $id=&make_key($name,$id);
1427: if (exists($remembered{$id})) {
1428: if ($debug) { &Apache::lonnet::logthis("Earyl return $id of $remembered{$id} "); }
1429: $accessed{$id}=[&gettimeofday()];
1430: $hits++;
1431: return ($remembered{$id},1);
1432: }
1433: my $value = $memcache->get($id);
1434: if (!(defined($value))) {
1435: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
1436: return (undef,undef);
1437: }
1438: if ($value eq '__undef__') {
1439: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
1440: $value=undef;
1441: }
1442: &make_room($id,$value,$debug);
1443: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
1444: return ($value,1);
1445: }
1446:
1447: sub do_cache_new {
1448: my ($name,$id,$value,$time,$debug) = @_;
1449: $id=&make_key($name,$id);
1450: my $setvalue=$value;
1451: if (!defined($setvalue)) {
1452: $setvalue='__undef__';
1453: }
1454: if (!defined($time) ) {
1455: $time=600;
1456: }
1457: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
1458: my $result = $memcache->set($id,$setvalue,$time);
1459: if (! $result) {
1460: &logthis("caching of id -> $id failed");
1461: $memcache->disconnect_all();
1462: }
1463: # need to make a copy of $value
1464: &make_room($id,$value,$debug);
1465: return $value;
1466: }
1467:
1468: sub make_room {
1469: my ($id,$value,$debug)=@_;
1470:
1471: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
1472: : $value;
1473: if ($to_remember<0) { return; }
1474: $accessed{$id}=[&gettimeofday()];
1475: if (scalar(keys(%remembered)) <= $to_remember) { return; }
1476: my $to_kick;
1477: my $max_time=0;
1478: foreach my $other (keys(%accessed)) {
1479: if (&tv_interval($accessed{$other}) > $max_time) {
1480: $to_kick=$other;
1481: $max_time=&tv_interval($accessed{$other});
1482: }
1483: }
1484: delete($remembered{$to_kick});
1485: delete($accessed{$to_kick});
1486: $kicks++;
1487: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
1488: return;
1489: }
1490:
1491: sub purge_remembered {
1492: #&logthis("Tossing ".scalar(keys(%remembered)));
1493: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
1494: undef(%remembered);
1495: undef(%accessed);
1496: }
1497: # ------------------------------------- Read an entry from a user's environment
1498:
1499: sub userenvironment {
1500: my ($udom,$unam,@what)=@_;
1501: my %returnhash=();
1502: my @answer=split(/\&/,
1503: &reply('get:'.$udom.':'.$unam.':environment:'.join('&',@what),
1504: &homeserver($unam,$udom)));
1505: my $i;
1506: for ($i=0;$i<=$#what;$i++) {
1507: $returnhash{$what[$i]}=&unescape($answer[$i]);
1508: }
1509: return %returnhash;
1510: }
1511:
1512: # ---------------------------------------------------------- Get a studentphoto
1513: sub studentphoto {
1514: my ($udom,$unam,$ext) = @_;
1515: my $home=&Apache::lonnet::homeserver($unam,$udom);
1516: if (defined($env{'request.course.id'})) {
1517: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
1518: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
1519: return(&retrievestudentphoto($udom,$unam,$ext));
1520: } else {
1521: my ($result,$perm_reqd)=
1522: &Apache::lonnet::auto_photo_permission($unam,$udom);
1523: if ($result eq 'ok') {
1524: if (!($perm_reqd eq 'yes')) {
1525: return(&retrievestudentphoto($udom,$unam,$ext));
1526: }
1527: }
1528: }
1529: }
1530: } else {
1531: my ($result,$perm_reqd) =
1532: &Apache::lonnet::auto_photo_permission($unam,$udom);
1533: if ($result eq 'ok') {
1534: if (!($perm_reqd eq 'yes')) {
1535: return(&retrievestudentphoto($udom,$unam,$ext));
1536: }
1537: }
1538: }
1539: return '/adm/lonKaputt/lonlogo_broken.gif';
1540: }
1541:
1542: sub retrievestudentphoto {
1543: my ($udom,$unam,$ext,$type) = @_;
1544: my $home=&Apache::lonnet::homeserver($unam,$udom);
1545: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
1546: if ($ret eq 'ok') {
1547: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
1548: if ($type eq 'thumbnail') {
1549: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
1550: }
1551: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
1552: return $tokenurl;
1553: } else {
1554: if ($type eq 'thumbnail') {
1555: return '/adm/lonKaputt/genericstudent_tn.gif';
1556: } else {
1557: return '/adm/lonKaputt/lonlogo_broken.gif';
1558: }
1559: }
1560: }
1561:
1562: # -------------------------------------------------------------------- New chat
1563:
1564: sub chatsend {
1565: my ($newentry,$anon,$group)=@_;
1566: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1567: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1568: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
1569: &reply('chatsend:'.$cdom.':'.$cnum.':'.
1570: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
1571: &escape($newentry)).':'.$group,$chome);
1572: }
1573:
1574: # ------------------------------------------ Find current version of a resource
1575:
1576: sub getversion {
1577: my $fname=&clutter(shift);
1578: unless ($fname=~/^\/res\//) { return -1; }
1579: return ¤tversion(&filelocation('',$fname));
1580: }
1581:
1582: sub currentversion {
1583: my $fname=shift;
1584: my ($result,$cached)=&is_cached_new('resversion',$fname);
1585: if (defined($cached)) { return $result; }
1586: my $author=$fname;
1587: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1588: my ($udom,$uname)=split(/\//,$author);
1589: my $home=homeserver($uname,$udom);
1590: if ($home eq 'no_host') {
1591: return -1;
1592: }
1593: my $answer=reply("currentversion:$fname",$home);
1594: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1595: return -1;
1596: }
1597: return &do_cache_new('resversion',$fname,$answer,600);
1598: }
1599:
1600: # ----------------------------- Subscribe to a resource, return URL if possible
1601:
1602: sub subscribe {
1603: my $fname=shift;
1604: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
1605: $fname=~s/[\n\r]//g;
1606: my $author=$fname;
1607: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1608: my ($udom,$uname)=split(/\//,$author);
1609: my $home=homeserver($uname,$udom);
1610: if ($home eq 'no_host') {
1611: return 'not_found';
1612: }
1613: my $answer=reply("sub:$fname",$home);
1614: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1615: $answer.=' by '.$home;
1616: }
1617: return $answer;
1618: }
1619:
1620: # -------------------------------------------------------------- Replicate file
1621:
1622: sub repcopy {
1623: my $filename=shift;
1624: $filename=~s/\/+/\//g;
1625: if ($filename=~m|^/home/httpd/html/adm/|) { return 'ok'; }
1626: if ($filename=~m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
1627: if ($filename=~m|^/home/httpd/html/userfiles/| or
1628: $filename=~m -^/*(uploaded|editupload)/-) {
1629: return &repcopy_userfile($filename);
1630: }
1631: $filename=~s/[\n\r]//g;
1632: my $transname="$filename.in.transfer";
1633: # FIXME: this should flock
1634: if ((-e $filename) || (-e $transname)) { return 'ok'; }
1635: my $remoteurl=subscribe($filename);
1636: if ($remoteurl =~ /^con_lost by/) {
1637: &logthis("Subscribe returned $remoteurl: $filename");
1638: return 'unavailable';
1639: } elsif ($remoteurl eq 'not_found') {
1640: #&logthis("Subscribe returned not_found: $filename");
1641: return 'not_found';
1642: } elsif ($remoteurl =~ /^rejected by/) {
1643: &logthis("Subscribe returned $remoteurl: $filename");
1644: return 'forbidden';
1645: } elsif ($remoteurl eq 'directory') {
1646: return 'ok';
1647: } else {
1648: my $author=$filename;
1649: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1650: my ($udom,$uname)=split(/\//,$author);
1651: my $home=homeserver($uname,$udom);
1652: unless ($home eq $perlvar{'lonHostID'}) {
1653: my @parts=split(/\//,$filename);
1654: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
1655: if ($path ne "$perlvar{'lonDocRoot'}/res") {
1656: &logthis("Malconfiguration for replication: $filename");
1657: return 'bad_request';
1658: }
1659: my $count;
1660: for ($count=5;$count<$#parts;$count++) {
1661: $path.="/$parts[$count]";
1662: if ((-e $path)!=1) {
1663: mkdir($path,0777);
1664: }
1665: }
1666: my $ua=new LWP::UserAgent;
1667: my $request=new HTTP::Request('GET',"$remoteurl");
1668: my $response=$ua->request($request,$transname);
1669: if ($response->is_error()) {
1670: unlink($transname);
1671: my $message=$response->status_line;
1672: &logthis("<font color=\"blue\">WARNING:"
1673: ." LWP get: $message: $filename</font>");
1674: return 'unavailable';
1675: } else {
1676: if ($remoteurl!~/\.meta$/) {
1677: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
1678: my $mresponse=$ua->request($mrequest,$filename.'.meta');
1679: if ($mresponse->is_error()) {
1680: unlink($filename.'.meta');
1681: &logthis(
1682: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
1683: }
1684: }
1685: rename($transname,$filename);
1686: return 'ok';
1687: }
1688: }
1689: }
1690: }
1691:
1692: # ------------------------------------------------ Get server side include body
1693: sub ssi_body {
1694: my ($filelink,%form)=@_;
1695: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
1696: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
1697: }
1698: my $output='';
1699: my $response;
1700: if ($filelink=~/^http\:/) {
1701: ($output,$response)=&externalssi($filelink);
1702: } else {
1703: ($output,$response)=&ssi($filelink,%form);
1704: }
1705: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
1706: $output=~s/^.*?\<body[^\>]*\>//si;
1707: $output=~s/\<\/body\s*\>.*?$//si;
1708: if (wantarray) {
1709: return ($output, $response);
1710: } else {
1711: return $output;
1712: }
1713: }
1714:
1715: # --------------------------------------------------------- Server Side Include
1716:
1717: sub absolute_url {
1718: my ($host_name) = @_;
1719: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
1720: if ($host_name eq '') {
1721: $host_name = $ENV{'SERVER_NAME'};
1722: }
1723: return $protocol.$host_name;
1724: }
1725:
1726: #
1727: # Server side include.
1728: # Parameters:
1729: # fn Possibly encrypted resource name/id.
1730: # form Hash that describes how the rendering should be done
1731: # and other things.
1732: # Returns:
1733: # Scalar context: The content of the response.
1734: # Array context: 2 element list of the content and the full response object.
1735: #
1736: sub ssi {
1737:
1738: my ($fn,%form)=@_;
1739: my $ua=new LWP::UserAgent;
1740: my $request;
1741:
1742: $form{'no_update_last_known'}=1;
1743: &Apache::lonenc::check_encrypt(\$fn);
1744: if (%form) {
1745: $request=new HTTP::Request('POST',&absolute_url().$fn);
1746: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys %form));
1747: } else {
1748: $request=new HTTP::Request('GET',&absolute_url().$fn);
1749: }
1750:
1751: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
1752: my $response=$ua->request($request);
1753:
1754: if (wantarray) {
1755: return ($response->content, $response);
1756: } else {
1757: return $response->content;
1758: }
1759: }
1760:
1761: sub externalssi {
1762: my ($url)=@_;
1763: my $ua=new LWP::UserAgent;
1764: my $request=new HTTP::Request('GET',$url);
1765: my $response=$ua->request($request);
1766: if (wantarray) {
1767: return ($response->content, $response);
1768: } else {
1769: return $response->content;
1770: }
1771: }
1772:
1773: # -------------------------------- Allow a /uploaded/ URI to be vouched for
1774:
1775: sub allowuploaded {
1776: my ($srcurl,$url)=@_;
1777: $url=&clutter(&declutter($url));
1778: my $dir=$url;
1779: $dir=~s/\/[^\/]+$//;
1780: my %httpref=();
1781: my $httpurl=&hreflocation('',$url);
1782: $httpref{'httpref.'.$httpurl}=$srcurl;
1783: &Apache::lonnet::appenv(\%httpref);
1784: }
1785:
1786: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
1787: # input: action, courseID, current domain, intended
1788: # path to file, source of file, instruction to parse file for objects,
1789: # ref to hash for embedded objects,
1790: # ref to hash for codebase of java objects.
1791: #
1792: # output: url to file (if action was uploaddoc),
1793: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
1794: #
1795: # Allows directory structure to be used within lonUsers/../userfiles/ for a
1796: # course.
1797: #
1798: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1799: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
1800: # course's home server.
1801: #
1802: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
1803: # be copied from $source (current location) to
1804: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1805: # and will then be copied to
1806: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
1807: # course's home server.
1808: #
1809: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1810: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
1811: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1812: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
1813: # in course's home server.
1814: #
1815:
1816: sub process_coursefile {
1817: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase)=@_;
1818: my $fetchresult;
1819: my $home=&homeserver($docuname,$docudom);
1820: if ($action eq 'propagate') {
1821: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1822: $home);
1823: } else {
1824: my $fpath = '';
1825: my $fname = $file;
1826: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
1827: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
1828: my $filepath = &build_filepath($fpath);
1829: if ($action eq 'copy') {
1830: if ($source eq '') {
1831: $fetchresult = 'no source file';
1832: return $fetchresult;
1833: } else {
1834: my $destination = $filepath.'/'.$fname;
1835: rename($source,$destination);
1836: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1837: $home);
1838: }
1839: } elsif ($action eq 'uploaddoc') {
1840: open(my $fh,'>'.$filepath.'/'.$fname);
1841: print $fh $env{'form.'.$source};
1842: close($fh);
1843: if ($parser eq 'parse') {
1844: my $parse_result = &extract_embedded_items($filepath,$fname,$allfiles,$codebase);
1845: unless ($parse_result eq 'ok') {
1846: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
1847: }
1848: }
1849: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1850: $home);
1851: if ($fetchresult eq 'ok') {
1852: return '/uploaded/'.$fpath.'/'.$fname;
1853: } else {
1854: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1855: ' to host '.$home.': '.$fetchresult);
1856: return '/adm/notfound.html';
1857: }
1858: }
1859: }
1860: unless ( $fetchresult eq 'ok') {
1861: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1862: ' to host '.$home.': '.$fetchresult);
1863: }
1864: return $fetchresult;
1865: }
1866:
1867: sub build_filepath {
1868: my ($fpath) = @_;
1869: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
1870: unless ($fpath eq '') {
1871: my @parts=split('/',$fpath);
1872: foreach my $part (@parts) {
1873: $filepath.= '/'.$part;
1874: if ((-e $filepath)!=1) {
1875: mkdir($filepath,0777);
1876: }
1877: }
1878: }
1879: return $filepath;
1880: }
1881:
1882: sub store_edited_file {
1883: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
1884: my $file = $primary_url;
1885: $file =~ s#^/uploaded/$docudom/$docuname/##;
1886: my $fpath = '';
1887: my $fname = $file;
1888: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
1889: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
1890: my $filepath = &build_filepath($fpath);
1891: open(my $fh,'>'.$filepath.'/'.$fname);
1892: print $fh $content;
1893: close($fh);
1894: my $home=&homeserver($docuname,$docudom);
1895: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1896: $home);
1897: if ($$fetchresult eq 'ok') {
1898: return '/uploaded/'.$fpath.'/'.$fname;
1899: } else {
1900: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1901: ' to host '.$home.': '.$$fetchresult);
1902: return '/adm/notfound.html';
1903: }
1904: }
1905:
1906: sub clean_filename {
1907: my ($fname,$args)=@_;
1908: # Replace Windows backslashes by forward slashes
1909: $fname=~s/\\/\//g;
1910: if (!$args->{'keep_path'}) {
1911: # Get rid of everything but the actual filename
1912: $fname=~s/^.*\/([^\/]+)$/$1/;
1913: }
1914: # Replace spaces by underscores
1915: $fname=~s/\s+/\_/g;
1916: # Replace all other weird characters by nothing
1917: $fname=~s{[^/\w\.\-]}{}g;
1918: # Replace all .\d. sequences with _\d. so they no longer look like version
1919: # numbers
1920: $fname=~s/\.(\d+)(?=\.)/_$1/g;
1921: return $fname;
1922: }
1923:
1924: # --------------- Take an uploaded file and put it into the userfiles directory
1925: # input: $formname - the contents of the file are in $env{"form.$formname"}
1926: # the desired filenam is in $env{"form.$formname.filename"}
1927: # $coursedoc - if true up to the current course
1928: # if false
1929: # $subdir - directory in userfile to store the file into
1930: # $parser - instruction to parse file for objects ($parser = parse)
1931: # $allfiles - reference to hash for embedded objects
1932: # $codebase - reference to hash for codebase of java objects
1933: # $desuname - username for permanent storage of uploaded file
1934: # $dsetudom - domain for permanaent storage of uploaded file
1935: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
1936: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
1937: #
1938: # output: url of file in userspace, or error: <message>
1939: # or /adm/notfound.html if failure to upload occurse
1940:
1941:
1942: sub userfileupload {
1943: my ($formname,$coursedoc,$subdir,$parser,$allfiles,$codebase,$destuname,
1944: $destudom,$thumbwidth,$thumbheight)=@_;
1945: if (!defined($subdir)) { $subdir='unknown'; }
1946: my $fname=$env{'form.'.$formname.'.filename'};
1947: $fname=&clean_filename($fname);
1948: # See if there is anything left
1949: unless ($fname) { return 'error: no uploaded file'; }
1950: chop($env{'form.'.$formname});
1951: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) { #files uploaded to help request form are handled differently
1952: my $now = time;
1953: my $filepath = 'tmp/helprequests/'.$now;
1954: my @parts=split(/\//,$filepath);
1955: my $fullpath = $perlvar{'lonDaemons'};
1956: for (my $i=0;$i<@parts;$i++) {
1957: $fullpath .= '/'.$parts[$i];
1958: if ((-e $fullpath)!=1) {
1959: mkdir($fullpath,0777);
1960: }
1961: }
1962: open(my $fh,'>'.$fullpath.'/'.$fname);
1963: print $fh $env{'form.'.$formname};
1964: close($fh);
1965: return $fullpath.'/'.$fname;
1966: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) { #files uploaded to create course page are handled differently
1967: my $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
1968: '_'.$env{'user.domain'}.'/pending';
1969: my @parts=split(/\//,$filepath);
1970: my $fullpath = $perlvar{'lonDaemons'};
1971: for (my $i=0;$i<@parts;$i++) {
1972: $fullpath .= '/'.$parts[$i];
1973: if ((-e $fullpath)!=1) {
1974: mkdir($fullpath,0777);
1975: }
1976: }
1977: open(my $fh,'>'.$fullpath.'/'.$fname);
1978: print $fh $env{'form.'.$formname};
1979: close($fh);
1980: return $fullpath.'/'.$fname;
1981: }
1982:
1983: # Create the directory if not present
1984: $fname="$subdir/$fname";
1985: if ($coursedoc) {
1986: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
1987: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1988: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
1989: return &finishuserfileupload($docuname,$docudom,
1990: $formname,$fname,$parser,$allfiles,
1991: $codebase,$thumbwidth,$thumbheight);
1992: } else {
1993: $fname=$env{'form.folder'}.'/'.$fname;
1994: return &process_coursefile('uploaddoc',$docuname,$docudom,
1995: $fname,$formname,$parser,
1996: $allfiles,$codebase);
1997: }
1998: } elsif (defined($destuname)) {
1999: my $docuname=$destuname;
2000: my $docudom=$destudom;
2001: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2002: $parser,$allfiles,$codebase,
2003: $thumbwidth,$thumbheight);
2004:
2005: } else {
2006: my $docuname=$env{'user.name'};
2007: my $docudom=$env{'user.domain'};
2008: if (exists($env{'form.group'})) {
2009: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2010: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2011: }
2012: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2013: $parser,$allfiles,$codebase,
2014: $thumbwidth,$thumbheight);
2015: }
2016: }
2017:
2018: sub finishuserfileupload {
2019: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
2020: $thumbwidth,$thumbheight) = @_;
2021: my $path=$docudom.'/'.$docuname.'/';
2022: my $filepath=$perlvar{'lonDocRoot'};
2023: my ($fnamepath,$file,$fetchthumb);
2024: $file=$fname;
2025: if ($fname=~m|/|) {
2026: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
2027: $path.=$fnamepath.'/';
2028: }
2029: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
2030: my $count;
2031: for ($count=4;$count<=$#parts;$count++) {
2032: $filepath.="/$parts[$count]";
2033: if ((-e $filepath)!=1) {
2034: mkdir($filepath,0777);
2035: }
2036: }
2037: # Save the file
2038: {
2039: if (!open(FH,'>'.$filepath.'/'.$file)) {
2040: &logthis('Failed to create '.$filepath.'/'.$file);
2041: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
2042: return '/adm/notfound.html';
2043: }
2044: if (!print FH ($env{'form.'.$formname})) {
2045: &logthis('Failed to write to '.$filepath.'/'.$file);
2046: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
2047: return '/adm/notfound.html';
2048: }
2049: close(FH);
2050: }
2051: if ($parser eq 'parse') {
2052: my $parse_result = &extract_embedded_items($filepath,$file,$allfiles,
2053: $codebase);
2054: unless ($parse_result eq 'ok') {
2055: &logthis('Failed to parse '.$filepath.$file.
2056: ' for embedded media: '.$parse_result);
2057: }
2058: }
2059: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
2060: my $input = $filepath.'/'.$file;
2061: my $output = $filepath.'/'.'tn-'.$file;
2062: my $thumbsize = $thumbwidth.'x'.$thumbheight;
2063: system("convert -sample $thumbsize $input $output");
2064: if (-e $filepath.'/'.'tn-'.$file) {
2065: $fetchthumb = 1;
2066: }
2067: }
2068:
2069: # Notify homeserver to grep it
2070: #
2071: my $docuhome=&homeserver($docuname,$docudom);
2072: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
2073: if ($fetchresult eq 'ok') {
2074: if ($fetchthumb) {
2075: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
2076: if ($thumbresult ne 'ok') {
2077: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
2078: $docuhome.': '.$thumbresult);
2079: }
2080: }
2081: #
2082: # Return the URL to it
2083: return '/uploaded/'.$path.$file;
2084: } else {
2085: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
2086: ': '.$fetchresult);
2087: return '/adm/notfound.html';
2088: }
2089: }
2090:
2091: sub extract_embedded_items {
2092: my ($filepath,$file,$allfiles,$codebase,$content) = @_;
2093: my @state = ();
2094: my %javafiles = (
2095: codebase => '',
2096: code => '',
2097: archive => ''
2098: );
2099: my %mediafiles = (
2100: src => '',
2101: movie => '',
2102: );
2103: my $p;
2104: if ($content) {
2105: $p = HTML::LCParser->new($content);
2106: } else {
2107: $p = HTML::LCParser->new($filepath.'/'.$file);
2108: }
2109: while (my $t=$p->get_token()) {
2110: if ($t->[0] eq 'S') {
2111: my ($tagname, $attr) = ($t->[1],$t->[2]);
2112: push(@state, $tagname);
2113: if (lc($tagname) eq 'allow') {
2114: &add_filetype($allfiles,$attr->{'src'},'src');
2115: }
2116: if (lc($tagname) eq 'img') {
2117: &add_filetype($allfiles,$attr->{'src'},'src');
2118: }
2119: if (lc($tagname) eq 'a') {
2120: &add_filetype($allfiles,$attr->{'href'},'href');
2121: }
2122: if (lc($tagname) eq 'script') {
2123: if ($attr->{'archive'} =~ /\.jar$/i) {
2124: &add_filetype($allfiles,$attr->{'archive'},'archive');
2125: } else {
2126: &add_filetype($allfiles,$attr->{'src'},'src');
2127: }
2128: }
2129: if (lc($tagname) eq 'link') {
2130: if (lc($attr->{'rel'}) eq 'stylesheet') {
2131: &add_filetype($allfiles,$attr->{'href'},'href');
2132: }
2133: }
2134: if (lc($tagname) eq 'object' ||
2135: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
2136: foreach my $item (keys(%javafiles)) {
2137: $javafiles{$item} = '';
2138: }
2139: }
2140: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
2141: my $name = lc($attr->{'name'});
2142: foreach my $item (keys(%javafiles)) {
2143: if ($name eq $item) {
2144: $javafiles{$item} = $attr->{'value'};
2145: last;
2146: }
2147: }
2148: foreach my $item (keys(%mediafiles)) {
2149: if ($name eq $item) {
2150: &add_filetype($allfiles, $attr->{'value'}, 'value');
2151: last;
2152: }
2153: }
2154: }
2155: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
2156: foreach my $item (keys(%javafiles)) {
2157: if ($attr->{$item}) {
2158: $javafiles{$item} = $attr->{$item};
2159: last;
2160: }
2161: }
2162: foreach my $item (keys(%mediafiles)) {
2163: if ($attr->{$item}) {
2164: &add_filetype($allfiles,$attr->{$item},$item);
2165: last;
2166: }
2167: }
2168: }
2169: } elsif ($t->[0] eq 'E') {
2170: my ($tagname) = ($t->[1]);
2171: if ($javafiles{'codebase'} ne '') {
2172: $javafiles{'codebase'} .= '/';
2173: }
2174: if (lc($tagname) eq 'applet' ||
2175: lc($tagname) eq 'object' ||
2176: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
2177: ) {
2178: foreach my $item (keys(%javafiles)) {
2179: if ($item ne 'codebase' && $javafiles{$item} ne '') {
2180: my $file=$javafiles{'codebase'}.$javafiles{$item};
2181: &add_filetype($allfiles,$file,$item);
2182: }
2183: }
2184: }
2185: pop @state;
2186: }
2187: }
2188: return 'ok';
2189: }
2190:
2191: sub add_filetype {
2192: my ($allfiles,$file,$type)=@_;
2193: if (exists($allfiles->{$file})) {
2194: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
2195: push(@{$allfiles->{$file}}, &escape($type));
2196: }
2197: } else {
2198: @{$allfiles->{$file}} = (&escape($type));
2199: }
2200: }
2201:
2202: sub removeuploadedurl {
2203: my ($url)=@_;
2204: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
2205: return &removeuserfile($uname,$udom,$fname);
2206: }
2207:
2208: sub removeuserfile {
2209: my ($docuname,$docudom,$fname)=@_;
2210: my $home=&homeserver($docuname,$docudom);
2211: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
2212: if ($result eq 'ok') {
2213: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
2214: my $metafile = $fname.'.meta';
2215: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
2216: my $url = "/uploaded/$docudom/$docuname/$fname";
2217: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2218: my $sqlresult =
2219: &update_portfolio_table($docuname,$docudom,$file,
2220: 'portfolio_metadata',$group,
2221: 'delete');
2222: }
2223: }
2224: return $result;
2225: }
2226:
2227: sub mkdiruserfile {
2228: my ($docuname,$docudom,$dir)=@_;
2229: my $home=&homeserver($docuname,$docudom);
2230: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
2231: }
2232:
2233: sub renameuserfile {
2234: my ($docuname,$docudom,$old,$new)=@_;
2235: my $home=&homeserver($docuname,$docudom);
2236: my $result = &reply("renameuserfile:$docudom:$docuname:".
2237: &escape("$old").':'.&escape("$new"),$home);
2238: if ($result eq 'ok') {
2239: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
2240: my $oldmeta = $old.'.meta';
2241: my $newmeta = $new.'.meta';
2242: my $metaresult =
2243: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
2244: my $url = "/uploaded/$docudom/$docuname/$old";
2245: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2246: my $sqlresult =
2247: &update_portfolio_table($docuname,$docudom,$file,
2248: 'portfolio_metadata',$group,
2249: 'delete');
2250: }
2251: }
2252: return $result;
2253: }
2254:
2255: # ------------------------------------------------------------------------- Log
2256:
2257: sub log {
2258: my ($dom,$nam,$hom,$what)=@_;
2259: return critical("log:$dom:$nam:$what",$hom);
2260: }
2261:
2262: # ------------------------------------------------------------------ Course Log
2263: #
2264: # This routine flushes several buffers of non-mission-critical nature
2265: #
2266:
2267: sub flushcourselogs {
2268: &logthis('Flushing log buffers');
2269: #
2270: # course logs
2271: # This is a log of all transactions in a course, which can be used
2272: # for data mining purposes
2273: #
2274: # It also collects the courseid database, which lists last transaction
2275: # times and course titles for all courseids
2276: #
2277: my %courseidbuffer=();
2278: foreach my $crsid (keys(%courselogs)) {
2279: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
2280: &escape($courselogs{$crsid}),
2281: $coursehombuf{$crsid}) eq 'ok') {
2282: delete $courselogs{$crsid};
2283: } else {
2284: &logthis('Failed to flush log buffer for '.$crsid);
2285: if (length($courselogs{$crsid})>40000) {
2286: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
2287: " exceeded maximum size, deleting.</font>");
2288: delete $courselogs{$crsid};
2289: }
2290: }
2291: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
2292: 'description' => $coursedescrbuf{$crsid},
2293: 'inst_code' => $courseinstcodebuf{$crsid},
2294: 'type' => $coursetypebuf{$crsid},
2295: 'owner' => $courseownerbuf{$crsid},
2296: };
2297: }
2298: #
2299: # Write course id database (reverse lookup) to homeserver of courses
2300: # Is used in pickcourse
2301: #
2302: foreach my $crs_home (keys(%courseidbuffer)) {
2303: my $response = &courseidput(&host_domain($crs_home),
2304: $courseidbuffer{$crs_home},
2305: $crs_home,'timeonly');
2306: }
2307: #
2308: # File accesses
2309: # Writes to the dynamic metadata of resources to get hit counts, etc.
2310: #
2311: foreach my $entry (keys(%accesshash)) {
2312: if ($entry =~ /___count$/) {
2313: my ($dom,$name);
2314: ($dom,$name,undef)=
2315: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
2316: if (! defined($dom) || $dom eq '' ||
2317: ! defined($name) || $name eq '') {
2318: my $cid = $env{'request.course.id'};
2319: $dom = $env{'request.'.$cid.'.domain'};
2320: $name = $env{'request.'.$cid.'.num'};
2321: }
2322: my $value = $accesshash{$entry};
2323: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
2324: my %temphash=($url => $value);
2325: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
2326: if ($result eq 'ok') {
2327: delete $accesshash{$entry};
2328: } elsif ($result eq 'unknown_cmd') {
2329: # Target server has old code running on it.
2330: my %temphash=($entry => $value);
2331: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2332: delete $accesshash{$entry};
2333: }
2334: }
2335: } else {
2336: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
2337: my %temphash=($entry => $accesshash{$entry});
2338: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2339: delete $accesshash{$entry};
2340: }
2341: }
2342: }
2343: #
2344: # Roles
2345: # Reverse lookup of user roles for course faculty/staff and co-authorship
2346: #
2347: foreach my $entry (keys(%userrolehash)) {
2348: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
2349: split(/\:/,$entry);
2350: if (&Apache::lonnet::put('nohist_userroles',
2351: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
2352: $rudom,$runame) eq 'ok') {
2353: delete $userrolehash{$entry};
2354: }
2355: }
2356: #
2357: # Reverse lookup of domain roles (dc, ad, li, sc, au)
2358: #
2359: my %domrolebuffer = ();
2360: foreach my $entry (keys %domainrolehash) {
2361: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
2362: if ($domrolebuffer{$rudom}) {
2363: $domrolebuffer{$rudom}.='&'.&escape($entry).
2364: '='.&escape($domainrolehash{$entry});
2365: } else {
2366: $domrolebuffer{$rudom}.=&escape($entry).
2367: '='.&escape($domainrolehash{$entry});
2368: }
2369: delete $domainrolehash{$entry};
2370: }
2371: foreach my $dom (keys(%domrolebuffer)) {
2372: my %servers = &get_servers($dom,'library');
2373: foreach my $tryserver (keys(%servers)) {
2374: unless (&reply('domroleput:'.$dom.':'.
2375: $domrolebuffer{$dom},$tryserver) eq 'ok') {
2376: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
2377: }
2378: }
2379: }
2380: $dumpcount++;
2381: }
2382:
2383: sub courselog {
2384: my $what=shift;
2385: $what=time.':'.$what;
2386: unless ($env{'request.course.id'}) { return ''; }
2387: $coursedombuf{$env{'request.course.id'}}=
2388: $env{'course.'.$env{'request.course.id'}.'.domain'};
2389: $coursenumbuf{$env{'request.course.id'}}=
2390: $env{'course.'.$env{'request.course.id'}.'.num'};
2391: $coursehombuf{$env{'request.course.id'}}=
2392: $env{'course.'.$env{'request.course.id'}.'.home'};
2393: $coursedescrbuf{$env{'request.course.id'}}=
2394: $env{'course.'.$env{'request.course.id'}.'.description'};
2395: $courseinstcodebuf{$env{'request.course.id'}}=
2396: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
2397: $courseownerbuf{$env{'request.course.id'}}=
2398: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
2399: $coursetypebuf{$env{'request.course.id'}}=
2400: $env{'course.'.$env{'request.course.id'}.'.type'};
2401: if (defined $courselogs{$env{'request.course.id'}}) {
2402: $courselogs{$env{'request.course.id'}}.='&'.$what;
2403: } else {
2404: $courselogs{$env{'request.course.id'}}.=$what;
2405: }
2406: if (length($courselogs{$env{'request.course.id'}})>4048) {
2407: &flushcourselogs();
2408: }
2409: }
2410:
2411: sub courseacclog {
2412: my $fnsymb=shift;
2413: unless ($env{'request.course.id'}) { return ''; }
2414: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
2415: if ($fnsymb=~/(problem|exam|quiz|assess|survey|form|task|page)$/) {
2416: $what.=':POST';
2417: # FIXME: Probably ought to escape things....
2418: foreach my $key (keys(%env)) {
2419: if ($key=~/^form\.(.*)/) {
2420: $what.=':'.$1.'='.$env{$key};
2421: }
2422: }
2423: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
2424: # FIXME: We should not be depending on a form parameter that someone
2425: # editing lonsearchcat.pm might change in the future.
2426: if ($env{'form.phase'} eq 'course_search') {
2427: $what.= ':POST';
2428: # FIXME: Probably ought to escape things....
2429: foreach my $element ('courseexp','crsfulltext','crsrelated',
2430: 'crsdiscuss') {
2431: $what.=':'.$element.'='.$env{'form.'.$element};
2432: }
2433: }
2434: }
2435: &courselog($what);
2436: }
2437:
2438: sub countacc {
2439: my $url=&declutter(shift);
2440: return if (! defined($url) || $url eq '');
2441: unless ($env{'request.course.id'}) { return ''; }
2442: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
2443: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
2444: $accesshash{$key}++;
2445: }
2446:
2447: sub linklog {
2448: my ($from,$to)=@_;
2449: $from=&declutter($from);
2450: $to=&declutter($to);
2451: $accesshash{$from.'___'.$to.'___comefrom'}=1;
2452: $accesshash{$to.'___'.$from.'___goto'}=1;
2453: }
2454:
2455: sub userrolelog {
2456: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
2457: if (($trole=~/^ca/) || ($trole=~/^aa/) ||
2458: ($trole=~/^in/) || ($trole=~/^cc/) ||
2459: ($trole=~/^ep/) || ($trole=~/^cr/) ||
2460: ($trole=~/^ta/)) {
2461: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2462: $userrolehash
2463: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2464: =$tend.':'.$tstart;
2465: }
2466: if (($env{'request.role'} =~ /dc\./) &&
2467: (($trole=~/^au/) || ($trole=~/^in/) ||
2468: ($trole=~/^cc/) || ($trole=~/^ep/) ||
2469: ($trole=~/^cr/) || ($trole=~/^ta/))) {
2470: $userrolehash
2471: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
2472: =$tend.':'.$tstart;
2473: }
2474: if (($trole=~/^dc/) || ($trole=~/^ad/) ||
2475: ($trole=~/^li/) || ($trole=~/^li/) ||
2476: ($trole=~/^au/) || ($trole=~/^dg/) ||
2477: ($trole=~/^sc/)) {
2478: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2479: $domainrolehash
2480: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2481: = $tend.':'.$tstart;
2482: }
2483: }
2484:
2485: sub courserolelog {
2486: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
2487: if (($trole eq 'cc') || ($trole eq 'in') ||
2488: ($trole eq 'ep') || ($trole eq 'ad') ||
2489: ($trole eq 'ta') || ($trole eq 'st') ||
2490: ($trole=~/^cr/) || ($trole eq 'gr')) {
2491: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
2492: my $cdom = $1;
2493: my $cnum = $2;
2494: my $sec = $3;
2495: my $namespace = 'rolelog';
2496: my %storehash = (
2497: role => $trole,
2498: start => $tstart,
2499: end => $tend,
2500: selfenroll => $selfenroll,
2501: context => $context,
2502: );
2503: if ($trole eq 'gr') {
2504: $namespace = 'groupslog';
2505: $storehash{'group'} = $sec;
2506: } else {
2507: $storehash{'section'} = $sec;
2508: }
2509: &instructor_log($namespace,\%storehash,$delflag,$username,$domain,$cnum,$cdom);
2510: }
2511: }
2512: return;
2513: }
2514:
2515: sub get_course_adv_roles {
2516: my ($cid,$codes) = @_;
2517: $cid=$env{'request.course.id'} unless (defined($cid));
2518: my %coursehash=&coursedescription($cid);
2519: my %nothide=();
2520: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2521: if ($user !~ /:/) {
2522: $nothide{join(':',split(/[\@]/,$user))}=1;
2523: } else {
2524: $nothide{$user}=1;
2525: }
2526: }
2527: my %returnhash=();
2528: my %dumphash=
2529: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
2530: my $now=time;
2531: foreach my $entry (keys %dumphash) {
2532: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
2533: if (($tstart) && ($tstart<0)) { next; }
2534: if (($tend) && ($tend<$now)) { next; }
2535: if (($tstart) && ($now<$tstart)) { next; }
2536: my ($role,$username,$domain,$section)=split(/\:/,$entry);
2537: if ($username eq '' || $domain eq '') { next; }
2538: if ((&privileged($username,$domain)) &&
2539: (!$nothide{$username.':'.$domain})) { next; }
2540: if ($role eq 'cr') { next; }
2541: if ($codes) {
2542: if ($section) { $role .= ':'.$section; }
2543: if ($returnhash{$role}) {
2544: $returnhash{$role}.=','.$username.':'.$domain;
2545: } else {
2546: $returnhash{$role}=$username.':'.$domain;
2547: }
2548: } else {
2549: my $key=&plaintext($role);
2550: if ($section) { $key.=' (Section '.$section.')'; }
2551: if ($returnhash{$key}) {
2552: $returnhash{$key}.=','.$username.':'.$domain;
2553: } else {
2554: $returnhash{$key}=$username.':'.$domain;
2555: }
2556: }
2557: }
2558: return %returnhash;
2559: }
2560:
2561: sub get_my_roles {
2562: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
2563: unless (defined($uname)) { $uname=$env{'user.name'}; }
2564: unless (defined($udom)) { $udom=$env{'user.domain'}; }
2565: my (%dumphash,%nothide);
2566: if ($context eq 'userroles') {
2567: %dumphash = &dump('roles',$udom,$uname);
2568: } else {
2569: %dumphash=
2570: &dump('nohist_userroles',$udom,$uname);
2571: if ($hidepriv) {
2572: my %coursehash=&coursedescription($udom.'_'.$uname);
2573: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2574: if ($user !~ /:/) {
2575: $nothide{join(':',split(/[\@]/,$user))} = 1;
2576: } else {
2577: $nothide{$user} = 1;
2578: }
2579: }
2580: }
2581: }
2582: my %returnhash=();
2583: my $now=time;
2584: foreach my $entry (keys(%dumphash)) {
2585: my ($role,$tend,$tstart);
2586: if ($context eq 'userroles') {
2587: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
2588: } else {
2589: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
2590: }
2591: if (($tstart) && ($tstart<0)) { next; }
2592: my $status = 'active';
2593: if (($tend) && ($tend<=$now)) {
2594: $status = 'previous';
2595: }
2596: if (($tstart) && ($now<$tstart)) {
2597: $status = 'future';
2598: }
2599: if (ref($types) eq 'ARRAY') {
2600: if (!grep(/^\Q$status\E$/,@{$types})) {
2601: next;
2602: }
2603: } else {
2604: if ($status ne 'active') {
2605: next;
2606: }
2607: }
2608: my ($rolecode,$username,$domain,$section,$area);
2609: if ($context eq 'userroles') {
2610: ($area,$rolecode) = split(/_/,$entry);
2611: (undef,$domain,$username,$section) = split(/\//,$area);
2612: } else {
2613: ($role,$username,$domain,$section) = split(/\:/,$entry);
2614: }
2615: if (ref($roledoms) eq 'ARRAY') {
2616: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
2617: next;
2618: }
2619: }
2620: if (ref($roles) eq 'ARRAY') {
2621: if (!grep(/^\Q$role\E$/,@{$roles})) {
2622: if ($role =~ /^cr\//) {
2623: if (!grep(/^cr$/,@{$roles})) {
2624: next;
2625: }
2626: } else {
2627: next;
2628: }
2629: }
2630: }
2631: if ($hidepriv) {
2632: if ((&privileged($username,$domain)) &&
2633: (!$nothide{$username.':'.$domain})) {
2634: next;
2635: }
2636: }
2637: if ($withsec) {
2638: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
2639: $tstart.':'.$tend;
2640: } else {
2641: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
2642: }
2643: }
2644: return %returnhash;
2645: }
2646:
2647: # ----------------------------------------------------- Frontpage Announcements
2648: #
2649: #
2650:
2651: sub postannounce {
2652: my ($server,$text)=@_;
2653: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
2654: unless ($text=~/\w/) { $text=''; }
2655: return &reply('setannounce:'.&escape($text),$server);
2656: }
2657:
2658: sub getannounce {
2659:
2660: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
2661: my $announcement='';
2662: while (my $line = <$fh>) { $announcement .= $line; }
2663: close($fh);
2664: if ($announcement=~/\w/) {
2665: return
2666: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
2667: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
2668: } else {
2669: return '';
2670: }
2671: } else {
2672: return '';
2673: }
2674: }
2675:
2676: # ---------------------------------------------------------- Course ID routines
2677: # Deal with domain's nohist_courseid.db files
2678: #
2679:
2680: sub courseidput {
2681: my ($domain,$storehash,$coursehome,$caller) = @_;
2682: my $outcome;
2683: if ($caller eq 'timeonly') {
2684: my $cids = '';
2685: foreach my $item (keys(%$storehash)) {
2686: $cids.=&escape($item).'&';
2687: }
2688: $cids=~s/\&$//;
2689: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
2690: $coursehome);
2691: } else {
2692: my $items = '';
2693: foreach my $item (keys(%$storehash)) {
2694: $items.= &escape($item).'='.
2695: &freeze_escape($$storehash{$item}).'&';
2696: }
2697: $items=~s/\&$//;
2698: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
2699: $coursehome);
2700: }
2701: if ($outcome eq 'unknown_cmd') {
2702: my $what;
2703: foreach my $cid (keys(%$storehash)) {
2704: $what .= &escape($cid).'=';
2705: foreach my $item ('description','inst_code','owner','type') {
2706: $what .= &escape($storehash->{$cid}{$item}).':';
2707: }
2708: $what =~ s/\:$/&/;
2709: }
2710: $what =~ s/\&$//;
2711: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
2712: } else {
2713: return $outcome;
2714: }
2715: }
2716:
2717: sub courseiddump {
2718: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
2719: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
2720: $selfenrollonly)=@_;
2721: my $as_hash = 1;
2722: my %returnhash;
2723: if (!$domfilter) { $domfilter=''; }
2724: my %libserv = &all_library();
2725: foreach my $tryserver (keys(%libserv)) {
2726: if ( ( $hostidflag == 1
2727: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
2728: || (!defined($hostidflag)) ) {
2729:
2730: if (($domfilter eq '') ||
2731: (&host_domain($tryserver) eq $domfilter)) {
2732: my $rep =
2733: &reply('courseiddump:'.&host_domain($tryserver).':'.
2734: $sincefilter.':'.&escape($descfilter).':'.
2735: &escape($instcodefilter).':'.&escape($ownerfilter).
2736: ':'.&escape($coursefilter).':'.&escape($typefilter).
2737: ':'.&escape($regexp_ok).':'.$as_hash.':'.
2738: &escape($selfenrollonly),$tryserver);
2739: my @pairs=split(/\&/,$rep);
2740: foreach my $item (@pairs) {
2741: my ($key,$value)=split(/\=/,$item,2);
2742: $key = &unescape($key);
2743: next if ($key =~ /^error: 2 /);
2744: my $result = &thaw_unescape($value);
2745: if (ref($result) eq 'HASH') {
2746: $returnhash{$key}=$result;
2747: } else {
2748: my @responses = split(/:/,$value);
2749: my @items = ('description','inst_code','owner','type');
2750: for (my $i=0; $i<@responses; $i++) {
2751: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
2752: }
2753: }
2754: }
2755: }
2756: }
2757: }
2758: return %returnhash;
2759: }
2760:
2761: # ---------------------------------------------------------- DC e-mail
2762:
2763: sub dcmailput {
2764: my ($domain,$msgid,$message,$server)=@_;
2765: my $status = &Apache::lonnet::critical(
2766: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
2767: &escape($message),$server);
2768: return $status;
2769: }
2770:
2771: sub dcmaildump {
2772: my ($dom,$startdate,$enddate,$senders) = @_;
2773: my %returnhash=();
2774:
2775: if (defined(&domain($dom,'primary'))) {
2776: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
2777: &escape($enddate).':';
2778: my @esc_senders=map { &escape($_)} @$senders;
2779: $cmd.=&escape(join('&',@esc_senders));
2780: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
2781: my ($key,$value) = split(/\=/,$line,2);
2782: if (($key) && ($value)) {
2783: $returnhash{&unescape($key)} = &unescape($value);
2784: }
2785: }
2786: }
2787: return %returnhash;
2788: }
2789: # ---------------------------------------------------------- Domain roles
2790:
2791: sub get_domain_roles {
2792: my ($dom,$roles,$startdate,$enddate)=@_;
2793: if (undef($startdate) || $startdate eq '') {
2794: $startdate = '.';
2795: }
2796: if (undef($enddate) || $enddate eq '') {
2797: $enddate = '.';
2798: }
2799: my $rolelist;
2800: if (ref($roles) eq 'ARRAY') {
2801: $rolelist = join(':',@{$roles});
2802: }
2803: my %personnel = ();
2804:
2805: my %servers = &get_servers($dom,'library');
2806: foreach my $tryserver (keys(%servers)) {
2807: %{$personnel{$tryserver}}=();
2808: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
2809: &escape($startdate).':'.
2810: &escape($enddate).':'.
2811: &escape($rolelist), $tryserver))) {
2812: my ($key,$value) = split(/\=/,$line,2);
2813: if (($key) && ($value)) {
2814: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
2815: }
2816: }
2817: }
2818: return %personnel;
2819: }
2820:
2821: # ----------------------------------------------------------- Check out an item
2822:
2823: sub get_first_access {
2824: my ($type,$argsymb)=@_;
2825: my ($symb,$courseid,$udom,$uname)=&whichuser();
2826: if ($argsymb) { $symb=$argsymb; }
2827: my ($map,$id,$res)=&decode_symb($symb);
2828: if ($type eq 'course') {
2829: $res='course';
2830: } elsif ($type eq 'map') {
2831: $res=&symbread($map);
2832: } else {
2833: $res=$symb;
2834: }
2835: my %times=&get('firstaccesstimes',["$courseid\0$res"],$udom,$uname);
2836: return $times{"$courseid\0$res"};
2837: }
2838:
2839: sub set_first_access {
2840: my ($type)=@_;
2841: my ($symb,$courseid,$udom,$uname)=&whichuser();
2842: my ($map,$id,$res)=&decode_symb($symb);
2843: if ($type eq 'course') {
2844: $res='course';
2845: } elsif ($type eq 'map') {
2846: $res=&symbread($map);
2847: } else {
2848: $res=$symb;
2849: }
2850: my $firstaccess=&get_first_access($type,$symb);
2851: if (!$firstaccess) {
2852: return &put('firstaccesstimes',{"$courseid\0$res"=>time},$udom,$uname);
2853: }
2854: return 'already_set';
2855: }
2856:
2857: sub checkout {
2858: my ($symb,$tuname,$tudom,$tcrsid)=@_;
2859: my $now=time;
2860: my $lonhost=$perlvar{'lonHostID'};
2861: my $infostr=&escape(
2862: 'CHECKOUTTOKEN&'.
2863: $tuname.'&'.
2864: $tudom.'&'.
2865: $tcrsid.'&'.
2866: $symb.'&'.
2867: $now.'&'.$ENV{'REMOTE_ADDR'});
2868: my $token=&reply('tmpput:'.$infostr,$lonhost);
2869: if ($token=~/^error\:/) {
2870: &logthis("<font color=\"blue\">WARNING: ".
2871: "Checkout tmpput failed ".$tudom.' - '.$tuname.' - '.$symb.
2872: "</font>");
2873: return '';
2874: }
2875:
2876: $token=~s/^(\d+)\_.*\_(\d+)$/$1\*$2\*$lonhost/;
2877: $token=~tr/a-z/A-Z/;
2878:
2879: my %infohash=('resource.0.outtoken' => $token,
2880: 'resource.0.checkouttime' => $now,
2881: 'resource.0.outremote' => $ENV{'REMOTE_ADDR'});
2882:
2883: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
2884: return '';
2885: } else {
2886: &logthis("<font color=\"blue\">WARNING: ".
2887: "Checkout cstore failed ".$tudom.' - '.$tuname.' - '.$symb.
2888: "</font>");
2889: }
2890:
2891: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
2892: &escape('Checkout '.$infostr.' - '.
2893: $token)) ne 'ok') {
2894: return '';
2895: } else {
2896: &logthis("<font color=\"blue\">WARNING: ".
2897: "Checkout log failed ".$tudom.' - '.$tuname.' - '.$symb.
2898: "</font>");
2899: }
2900: return $token;
2901: }
2902:
2903: # ------------------------------------------------------------ Check in an item
2904:
2905: sub checkin {
2906: my $token=shift;
2907: my $now=time;
2908: my ($ta,$tb,$lonhost)=split(/\*/,$token);
2909: $lonhost=~tr/A-Z/a-z/;
2910: my $dtoken=$ta.'_'.&hostname($lonhost).'_'.$tb;
2911: $dtoken=~s/\W/\_/g;
2912: my ($dummy,$tuname,$tudom,$tcrsid,$symb,$chtim,$rmaddr)=
2913: split(/\&/,&unescape(&reply('tmpget:'.$dtoken,$lonhost)));
2914:
2915: unless (($tuname) && ($tudom)) {
2916: &logthis('Check in '.$token.' ('.$dtoken.') failed');
2917: return '';
2918: }
2919:
2920: unless (&allowed('mgr',$tcrsid)) {
2921: &logthis('Check in '.$token.' ('.$dtoken.') unauthorized: '.
2922: $env{'user.name'}.' - '.$env{'user.domain'});
2923: return '';
2924: }
2925:
2926: my %infohash=('resource.0.intoken' => $token,
2927: 'resource.0.checkintime' => $now,
2928: 'resource.0.inremote' => $ENV{'REMOTE_ADDR'});
2929:
2930: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
2931: return '';
2932: }
2933:
2934: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
2935: &escape('Checkin - '.$token)) ne 'ok') {
2936: return '';
2937: }
2938:
2939: return ($symb,$tuname,$tudom,$tcrsid);
2940: }
2941:
2942: # --------------------------------------------- Set Expire Date for Spreadsheet
2943:
2944: sub expirespread {
2945: my ($uname,$udom,$stype,$usymb)=@_;
2946: my $cid=$env{'request.course.id'};
2947: if ($cid) {
2948: my $now=time;
2949: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
2950: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
2951: $env{'course.'.$cid.'.num'}.
2952: ':nohist_expirationdates:'.
2953: &escape($key).'='.$now,
2954: $env{'course.'.$cid.'.home'})
2955: }
2956: return 'ok';
2957: }
2958:
2959: # ----------------------------------------------------- Devalidate Spreadsheets
2960:
2961: sub devalidate {
2962: my ($symb,$uname,$udom)=@_;
2963: my $cid=$env{'request.course.id'};
2964: if ($cid) {
2965: # delete the stored spreadsheets for
2966: # - the student level sheet of this user in course's homespace
2967: # - the assessment level sheet for this resource
2968: # for this user in user's homespace
2969: # - current conditional state info
2970: my $key=$uname.':'.$udom.':';
2971: my $status=
2972: &del('nohist_calculatedsheets',
2973: [$key.'studentcalc:'],
2974: $env{'course.'.$cid.'.domain'},
2975: $env{'course.'.$cid.'.num'})
2976: .' '.
2977: &del('nohist_calculatedsheets_'.$cid,
2978: [$key.'assesscalc:'.$symb],$udom,$uname);
2979: unless ($status eq 'ok ok') {
2980: &logthis('Could not devalidate spreadsheet '.
2981: $uname.' at '.$udom.' for '.
2982: $symb.': '.$status);
2983: }
2984: &delenv('user.state.'.$cid);
2985: }
2986: }
2987:
2988: sub get_scalar {
2989: my ($string,$end) = @_;
2990: my $value;
2991: if ($$string =~ s/^([^&]*?)($end)/$2/) {
2992: $value = $1;
2993: } elsif ($$string =~ s/^([^&]*?)&//) {
2994: $value = $1;
2995: }
2996: return &unescape($value);
2997: }
2998:
2999: sub array2str {
3000: my (@array) = @_;
3001: my $result=&arrayref2str(\@array);
3002: $result=~s/^__ARRAY_REF__//;
3003: $result=~s/__END_ARRAY_REF__$//;
3004: return $result;
3005: }
3006:
3007: sub arrayref2str {
3008: my ($arrayref) = @_;
3009: my $result='__ARRAY_REF__';
3010: foreach my $elem (@$arrayref) {
3011: if(ref($elem) eq 'ARRAY') {
3012: $result.=&arrayref2str($elem).'&';
3013: } elsif(ref($elem) eq 'HASH') {
3014: $result.=&hashref2str($elem).'&';
3015: } elsif(ref($elem)) {
3016: #print("Got a ref of ".(ref($elem))." skipping.");
3017: } else {
3018: $result.=&escape($elem).'&';
3019: }
3020: }
3021: $result=~s/\&$//;
3022: $result .= '__END_ARRAY_REF__';
3023: return $result;
3024: }
3025:
3026: sub hash2str {
3027: my (%hash) = @_;
3028: my $result=&hashref2str(\%hash);
3029: $result=~s/^__HASH_REF__//;
3030: $result=~s/__END_HASH_REF__$//;
3031: return $result;
3032: }
3033:
3034: sub hashref2str {
3035: my ($hashref)=@_;
3036: my $result='__HASH_REF__';
3037: foreach my $key (sort(keys(%$hashref))) {
3038: if (ref($key) eq 'ARRAY') {
3039: $result.=&arrayref2str($key).'=';
3040: } elsif (ref($key) eq 'HASH') {
3041: $result.=&hashref2str($key).'=';
3042: } elsif (ref($key)) {
3043: $result.='=';
3044: #print("Got a ref of ".(ref($key))." skipping.");
3045: } else {
3046: if ($key) {$result.=&escape($key).'=';} else { last; }
3047: }
3048:
3049: if(ref($hashref->{$key}) eq 'ARRAY') {
3050: $result.=&arrayref2str($hashref->{$key}).'&';
3051: } elsif(ref($hashref->{$key}) eq 'HASH') {
3052: $result.=&hashref2str($hashref->{$key}).'&';
3053: } elsif(ref($hashref->{$key})) {
3054: $result.='&';
3055: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
3056: } else {
3057: $result.=&escape($hashref->{$key}).'&';
3058: }
3059: }
3060: $result=~s/\&$//;
3061: $result .= '__END_HASH_REF__';
3062: return $result;
3063: }
3064:
3065: sub str2hash {
3066: my ($string)=@_;
3067: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
3068: return %$hash;
3069: }
3070:
3071: sub str2hashref {
3072: my ($string) = @_;
3073:
3074: my %hash;
3075:
3076: if($string !~ /^__HASH_REF__/) {
3077: if (! ($string eq '' || !defined($string))) {
3078: $hash{'error'}='Not hash reference';
3079: }
3080: return (\%hash, $string);
3081: }
3082:
3083: $string =~ s/^__HASH_REF__//;
3084:
3085: while($string !~ /^__END_HASH_REF__/) {
3086: #key
3087: my $key='';
3088: if($string =~ /^__HASH_REF__/) {
3089: ($key, $string)=&str2hashref($string);
3090: if(defined($key->{'error'})) {
3091: $hash{'error'}='Bad data';
3092: return (\%hash, $string);
3093: }
3094: } elsif($string =~ /^__ARRAY_REF__/) {
3095: ($key, $string)=&str2arrayref($string);
3096: if($key->[0] eq 'Array reference error') {
3097: $hash{'error'}='Bad data';
3098: return (\%hash, $string);
3099: }
3100: } else {
3101: $string =~ s/^(.*?)=//;
3102: $key=&unescape($1);
3103: }
3104: $string =~ s/^=//;
3105:
3106: #value
3107: my $value='';
3108: if($string =~ /^__HASH_REF__/) {
3109: ($value, $string)=&str2hashref($string);
3110: if(defined($value->{'error'})) {
3111: $hash{'error'}='Bad data';
3112: return (\%hash, $string);
3113: }
3114: } elsif($string =~ /^__ARRAY_REF__/) {
3115: ($value, $string)=&str2arrayref($string);
3116: if($value->[0] eq 'Array reference error') {
3117: $hash{'error'}='Bad data';
3118: return (\%hash, $string);
3119: }
3120: } else {
3121: $value=&get_scalar(\$string,'__END_HASH_REF__');
3122: }
3123: $string =~ s/^&//;
3124:
3125: $hash{$key}=$value;
3126: }
3127:
3128: $string =~ s/^__END_HASH_REF__//;
3129:
3130: return (\%hash, $string);
3131: }
3132:
3133: sub str2array {
3134: my ($string)=@_;
3135: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
3136: return @$array;
3137: }
3138:
3139: sub str2arrayref {
3140: my ($string) = @_;
3141: my @array;
3142:
3143: if($string !~ /^__ARRAY_REF__/) {
3144: if (! ($string eq '' || !defined($string))) {
3145: $array[0]='Array reference error';
3146: }
3147: return (\@array, $string);
3148: }
3149:
3150: $string =~ s/^__ARRAY_REF__//;
3151:
3152: while($string !~ /^__END_ARRAY_REF__/) {
3153: my $value='';
3154: if($string =~ /^__HASH_REF__/) {
3155: ($value, $string)=&str2hashref($string);
3156: if(defined($value->{'error'})) {
3157: $array[0] ='Array reference error';
3158: return (\@array, $string);
3159: }
3160: } elsif($string =~ /^__ARRAY_REF__/) {
3161: ($value, $string)=&str2arrayref($string);
3162: if($value->[0] eq 'Array reference error') {
3163: $array[0] ='Array reference error';
3164: return (\@array, $string);
3165: }
3166: } else {
3167: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
3168: }
3169: $string =~ s/^&//;
3170:
3171: push(@array, $value);
3172: }
3173:
3174: $string =~ s/^__END_ARRAY_REF__//;
3175:
3176: return (\@array, $string);
3177: }
3178:
3179: # -------------------------------------------------------------------Temp Store
3180:
3181: sub tmpreset {
3182: my ($symb,$namespace,$domain,$stuname) = @_;
3183: if (!$symb) {
3184: $symb=&symbread();
3185: if (!$symb) { $symb= $env{'request.url'}; }
3186: }
3187: $symb=escape($symb);
3188:
3189: if (!$namespace) { $namespace=$env{'request.state'}; }
3190: $namespace=~s/\//\_/g;
3191: $namespace=~s/\W//g;
3192:
3193: if (!$domain) { $domain=$env{'user.domain'}; }
3194: if (!$stuname) { $stuname=$env{'user.name'}; }
3195: if ($domain eq 'public' && $stuname eq 'public') {
3196: $stuname=$ENV{'REMOTE_ADDR'};
3197: }
3198: my $path=$perlvar{'lonDaemons'}.'/tmp';
3199: my %hash;
3200: if (tie(%hash,'GDBM_File',
3201: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3202: &GDBM_WRCREAT(),0640)) {
3203: foreach my $key (keys %hash) {
3204: if ($key=~ /:$symb/) {
3205: delete($hash{$key});
3206: }
3207: }
3208: }
3209: }
3210:
3211: sub tmpstore {
3212: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3213:
3214: if (!$symb) {
3215: $symb=&symbread();
3216: if (!$symb) { $symb= $env{'request.url'}; }
3217: }
3218: $symb=escape($symb);
3219:
3220: if (!$namespace) {
3221: # I don't think we would ever want to store this for a course.
3222: # it seems this will only be used if we don't have a course.
3223: #$namespace=$env{'request.course.id'};
3224: #if (!$namespace) {
3225: $namespace=$env{'request.state'};
3226: #}
3227: }
3228: $namespace=~s/\//\_/g;
3229: $namespace=~s/\W//g;
3230: if (!$domain) { $domain=$env{'user.domain'}; }
3231: if (!$stuname) { $stuname=$env{'user.name'}; }
3232: if ($domain eq 'public' && $stuname eq 'public') {
3233: $stuname=$ENV{'REMOTE_ADDR'};
3234: }
3235: my $now=time;
3236: my %hash;
3237: my $path=$perlvar{'lonDaemons'}.'/tmp';
3238: if (tie(%hash,'GDBM_File',
3239: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3240: &GDBM_WRCREAT(),0640)) {
3241: $hash{"version:$symb"}++;
3242: my $version=$hash{"version:$symb"};
3243: my $allkeys='';
3244: foreach my $key (keys(%$storehash)) {
3245: $allkeys.=$key.':';
3246: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
3247: }
3248: $hash{"$version:$symb:timestamp"}=$now;
3249: $allkeys.='timestamp';
3250: $hash{"$version:keys:$symb"}=$allkeys;
3251: if (untie(%hash)) {
3252: return 'ok';
3253: } else {
3254: return "error:$!";
3255: }
3256: } else {
3257: return "error:$!";
3258: }
3259: }
3260:
3261: # -----------------------------------------------------------------Temp Restore
3262:
3263: sub tmprestore {
3264: my ($symb,$namespace,$domain,$stuname) = @_;
3265:
3266: if (!$symb) {
3267: $symb=&symbread();
3268: if (!$symb) { $symb= $env{'request.url'}; }
3269: }
3270: $symb=escape($symb);
3271:
3272: if (!$namespace) { $namespace=$env{'request.state'}; }
3273:
3274: if (!$domain) { $domain=$env{'user.domain'}; }
3275: if (!$stuname) { $stuname=$env{'user.name'}; }
3276: if ($domain eq 'public' && $stuname eq 'public') {
3277: $stuname=$ENV{'REMOTE_ADDR'};
3278: }
3279: my %returnhash;
3280: $namespace=~s/\//\_/g;
3281: $namespace=~s/\W//g;
3282: my %hash;
3283: my $path=$perlvar{'lonDaemons'}.'/tmp';
3284: if (tie(%hash,'GDBM_File',
3285: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3286: &GDBM_READER(),0640)) {
3287: my $version=$hash{"version:$symb"};
3288: $returnhash{'version'}=$version;
3289: my $scope;
3290: for ($scope=1;$scope<=$version;$scope++) {
3291: my $vkeys=$hash{"$scope:keys:$symb"};
3292: my @keys=split(/:/,$vkeys);
3293: my $key;
3294: $returnhash{"$scope:keys"}=$vkeys;
3295: foreach $key (@keys) {
3296: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3297: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3298: }
3299: }
3300: if (!(untie(%hash))) {
3301: return "error:$!";
3302: }
3303: } else {
3304: return "error:$!";
3305: }
3306: return %returnhash;
3307: }
3308:
3309: # ----------------------------------------------------------------------- Store
3310:
3311: sub store {
3312: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3313: my $home='';
3314:
3315: if ($stuname) { $home=&homeserver($stuname,$domain); }
3316:
3317: $symb=&symbclean($symb);
3318: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3319:
3320: if (!$domain) { $domain=$env{'user.domain'}; }
3321: if (!$stuname) { $stuname=$env{'user.name'}; }
3322:
3323: &devalidate($symb,$stuname,$domain);
3324:
3325: $symb=escape($symb);
3326: if (!$namespace) {
3327: unless ($namespace=$env{'request.course.id'}) {
3328: return '';
3329: }
3330: }
3331: if (!$home) { $home=$env{'user.home'}; }
3332:
3333: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3334: $$storehash{'host'}=$perlvar{'lonHostID'};
3335:
3336: my $namevalue='';
3337: foreach my $key (keys(%$storehash)) {
3338: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3339: }
3340: $namevalue=~s/\&$//;
3341: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
3342: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3343: }
3344:
3345: # -------------------------------------------------------------- Critical Store
3346:
3347: sub cstore {
3348: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3349: my $home='';
3350:
3351: if ($stuname) { $home=&homeserver($stuname,$domain); }
3352:
3353: $symb=&symbclean($symb);
3354: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3355:
3356: if (!$domain) { $domain=$env{'user.domain'}; }
3357: if (!$stuname) { $stuname=$env{'user.name'}; }
3358:
3359: &devalidate($symb,$stuname,$domain);
3360:
3361: $symb=escape($symb);
3362: if (!$namespace) {
3363: unless ($namespace=$env{'request.course.id'}) {
3364: return '';
3365: }
3366: }
3367: if (!$home) { $home=$env{'user.home'}; }
3368:
3369: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3370: $$storehash{'host'}=$perlvar{'lonHostID'};
3371:
3372: my $namevalue='';
3373: foreach my $key (keys(%$storehash)) {
3374: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3375: }
3376: $namevalue=~s/\&$//;
3377: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
3378: return critical
3379: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3380: }
3381:
3382: # --------------------------------------------------------------------- Restore
3383:
3384: sub restore {
3385: my ($symb,$namespace,$domain,$stuname) = @_;
3386: my $home='';
3387:
3388: if ($stuname) { $home=&homeserver($stuname,$domain); }
3389:
3390: if (!$symb) {
3391: unless ($symb=escape(&symbread())) { return ''; }
3392: } else {
3393: $symb=&escape(&symbclean($symb));
3394: }
3395: if (!$namespace) {
3396: unless ($namespace=$env{'request.course.id'}) {
3397: return '';
3398: }
3399: }
3400: if (!$domain) { $domain=$env{'user.domain'}; }
3401: if (!$stuname) { $stuname=$env{'user.name'}; }
3402: if (!$home) { $home=$env{'user.home'}; }
3403: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
3404:
3405: my %returnhash=();
3406: foreach my $line (split(/\&/,$answer)) {
3407: my ($name,$value)=split(/\=/,$line);
3408: $returnhash{&unescape($name)}=&thaw_unescape($value);
3409: }
3410: my $version;
3411: for ($version=1;$version<=$returnhash{'version'};$version++) {
3412: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
3413: $returnhash{$item}=$returnhash{$version.':'.$item};
3414: }
3415: }
3416: return %returnhash;
3417: }
3418:
3419: # ---------------------------------------------------------- Course Description
3420:
3421: sub coursedescription {
3422: my ($courseid,$args)=@_;
3423: $courseid=~s/^\///;
3424: $courseid=~s/\_/\//g;
3425: my ($cdomain,$cnum)=split(/\//,$courseid);
3426: my $chome=&homeserver($cnum,$cdomain);
3427: my $normalid=$cdomain.'_'.$cnum;
3428: # need to always cache even if we get errors otherwise we keep
3429: # trying and trying and trying to get the course description.
3430: my %envhash=();
3431: my %returnhash=();
3432:
3433: my $expiretime=600;
3434: if ($env{'request.course.id'} eq $normalid) {
3435: $expiretime=120;
3436: }
3437:
3438: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
3439: if (!$args->{'freshen_cache'}
3440: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
3441: foreach my $key (keys(%env)) {
3442: next if ($key !~ /^\Q$prefix\E(.*)/);
3443: my ($setting) = $1;
3444: $returnhash{$setting} = $env{$key};
3445: }
3446: return %returnhash;
3447: }
3448:
3449: # get the data agin
3450: if (!$args->{'one_time'}) {
3451: $envhash{'course.'.$normalid.'.last_cache'}=time;
3452: }
3453:
3454: if ($chome ne 'no_host') {
3455: %returnhash=&dump('environment',$cdomain,$cnum);
3456: if (!exists($returnhash{'con_lost'})) {
3457: $returnhash{'home'}= $chome;
3458: $returnhash{'domain'} = $cdomain;
3459: $returnhash{'num'} = $cnum;
3460: if (!defined($returnhash{'type'})) {
3461: $returnhash{'type'} = 'Course';
3462: }
3463: while (my ($name,$value) = each %returnhash) {
3464: $envhash{'course.'.$normalid.'.'.$name}=$value;
3465: }
3466: $returnhash{'url'}=&clutter($returnhash{'url'});
3467: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
3468: $env{'user.name'}.'_'.$cdomain.'_'.$cnum;
3469: $envhash{'course.'.$normalid.'.home'}=$chome;
3470: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
3471: $envhash{'course.'.$normalid.'.num'}=$cnum;
3472: }
3473: }
3474: if (!$args->{'one_time'}) {
3475: &appenv(\%envhash);
3476: }
3477: return %returnhash;
3478: }
3479:
3480: # -------------------------------------------------See if a user is privileged
3481:
3482: sub privileged {
3483: my ($username,$domain)=@_;
3484: my $rolesdump=&reply("dump:$domain:$username:roles",
3485: &homeserver($username,$domain));
3486: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return 0; }
3487: my $now=time;
3488: if ($rolesdump ne '') {
3489: foreach my $entry (split(/&/,$rolesdump)) {
3490: if ($entry!~/^rolesdef_/) {
3491: my ($area,$role)=split(/=/,$entry);
3492: $area=~s/\_\w\w$//;
3493: my ($trole,$tend,$tstart)=split(/_/,$role);
3494: if (($trole eq 'dc') || ($trole eq 'su')) {
3495: my $active=1;
3496: if ($tend) {
3497: if ($tend<$now) { $active=0; }
3498: }
3499: if ($tstart) {
3500: if ($tstart>$now) { $active=0; }
3501: }
3502: if ($active) { return 1; }
3503: }
3504: }
3505: }
3506: }
3507: return 0;
3508: }
3509:
3510: # -------------------------------------------------------- Get user privileges
3511:
3512: sub rolesinit {
3513: my ($domain,$username,$authhost)=@_;
3514: my $rolesdump=reply("dump:$domain:$username:roles",$authhost);
3515: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return ''; }
3516: my %allroles=();
3517: my %allgroups=();
3518: my $now=time;
3519: my %userroles = ('user.login.time' => $now);
3520: my $group_privs;
3521:
3522: if ($rolesdump ne '') {
3523: foreach my $entry (split(/&/,$rolesdump)) {
3524: if ($entry!~/^rolesdef_/) {
3525: my ($area,$role)=split(/=/,$entry);
3526: $area=~s/\_\w\w$//;
3527: my ($trole,$tend,$tstart,$group_privs);
3528: if ($role=~/^cr/) {
3529: if ($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
3530: ($trole,my $trest)=($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|);
3531: ($tend,$tstart)=split('_',$trest);
3532: } else {
3533: $trole=$role;
3534: }
3535: } elsif ($role =~ m|^gr/|) {
3536: ($trole,$tend,$tstart) = split(/_/,$role);
3537: ($trole,$group_privs) = split(/\//,$trole);
3538: $group_privs = &unescape($group_privs);
3539: } else {
3540: ($trole,$tend,$tstart)=split(/_/,$role);
3541: }
3542: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
3543: $username);
3544: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
3545: if (($tend!=0) && ($tend<$now)) { $trole=''; }
3546: if (($tstart!=0) && ($tstart>$now)) { $trole=''; }
3547: if (($area ne '') && ($trole ne '')) {
3548: my $spec=$trole.'.'.$area;
3549: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
3550: if ($trole =~ /^cr\//) {
3551: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
3552: } elsif ($trole eq 'gr') {
3553: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
3554: } else {
3555: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
3556: }
3557: }
3558: }
3559: }
3560: my ($author,$adv) = &set_userprivs(\%userroles,\%allroles,\%allgroups);
3561: $userroles{'user.adv'} = $adv;
3562: $userroles{'user.author'} = $author;
3563: $env{'user.adv'}=$adv;
3564: }
3565: return \%userroles;
3566: }
3567:
3568: sub set_arearole {
3569: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
3570: # log the associated role with the area
3571: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
3572: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
3573: }
3574:
3575: sub custom_roleprivs {
3576: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
3577: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
3578: my $homsvr=homeserver($rauthor,$rdomain);
3579: if (&hostname($homsvr) ne '') {
3580: my ($rdummy,$roledef)=
3581: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
3582: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
3583: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
3584: if (defined($syspriv)) {
3585: $$allroles{'cm./'}.=':'.$syspriv;
3586: $$allroles{$spec.'./'}.=':'.$syspriv;
3587: }
3588: if ($tdomain ne '') {
3589: if (defined($dompriv)) {
3590: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
3591: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
3592: }
3593: if (($trest ne '') && (defined($coursepriv))) {
3594: $$allroles{'cm.'.$area}.=':'.$coursepriv;
3595: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
3596: }
3597: }
3598: }
3599: }
3600: }
3601:
3602: sub group_roleprivs {
3603: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
3604: my $access = 1;
3605: my $now = time;
3606: if (($tend!=0) && ($tend<$now)) { $access = 0; }
3607: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
3608: if ($access) {
3609: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
3610: $$allgroups{$course}{$group} .=':'.$group_privs;
3611: }
3612: }
3613:
3614: sub standard_roleprivs {
3615: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
3616: if (defined($pr{$trole.':s'})) {
3617: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
3618: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
3619: }
3620: if ($tdomain ne '') {
3621: if (defined($pr{$trole.':d'})) {
3622: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
3623: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
3624: }
3625: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
3626: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
3627: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
3628: }
3629: }
3630: }
3631:
3632: sub set_userprivs {
3633: my ($userroles,$allroles,$allgroups) = @_;
3634: my $author=0;
3635: my $adv=0;
3636: my %grouproles = ();
3637: if (keys(%{$allgroups}) > 0) {
3638: foreach my $role (keys %{$allroles}) {
3639: my ($trole,$area,$sec,$extendedarea);
3640: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
3641: $trole = $1;
3642: $area = $2;
3643: $sec = $3;
3644: $extendedarea = $area.$sec;
3645: if (exists($$allgroups{$area})) {
3646: foreach my $group (keys(%{$$allgroups{$area}})) {
3647: my $spec = $trole.'.'.$extendedarea;
3648: $grouproles{$spec.'.'.$area.'/'.$group} =
3649: $$allgroups{$area}{$group};
3650: }
3651: }
3652: }
3653: }
3654: }
3655: foreach my $group (keys(%grouproles)) {
3656: $$allroles{$group} = $grouproles{$group};
3657: }
3658: foreach my $role (keys(%{$allroles})) {
3659: my %thesepriv;
3660: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
3661: foreach my $item (split(/:/,$$allroles{$role})) {
3662: if ($item ne '') {
3663: my ($privilege,$restrictions)=split(/&/,$item);
3664: if ($restrictions eq '') {
3665: $thesepriv{$privilege}='F';
3666: } elsif ($thesepriv{$privilege} ne 'F') {
3667: $thesepriv{$privilege}.=$restrictions;
3668: }
3669: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
3670: }
3671: }
3672: my $thesestr='';
3673: foreach my $priv (keys(%thesepriv)) {
3674: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
3675: }
3676: $userroles->{'user.priv.'.$role} = $thesestr;
3677: }
3678: return ($author,$adv);
3679: }
3680:
3681: # --------------------------------------------------------------- get interface
3682:
3683: sub get {
3684: my ($namespace,$storearr,$udomain,$uname)=@_;
3685: my $items='';
3686: foreach my $item (@$storearr) {
3687: $items.=&escape($item).'&';
3688: }
3689: $items=~s/\&$//;
3690: if (!$udomain) { $udomain=$env{'user.domain'}; }
3691: if (!$uname) { $uname=$env{'user.name'}; }
3692: my $uhome=&homeserver($uname,$udomain);
3693:
3694: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
3695: my @pairs=split(/\&/,$rep);
3696: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
3697: return @pairs;
3698: }
3699: my %returnhash=();
3700: my $i=0;
3701: foreach my $item (@$storearr) {
3702: $returnhash{$item}=&thaw_unescape($pairs[$i]);
3703: $i++;
3704: }
3705: return %returnhash;
3706: }
3707:
3708: # --------------------------------------------------------------- del interface
3709:
3710: sub del {
3711: my ($namespace,$storearr,$udomain,$uname)=@_;
3712: my $items='';
3713: foreach my $item (@$storearr) {
3714: $items.=&escape($item).'&';
3715: }
3716: $items=~s/\&$//;
3717: if (!$udomain) { $udomain=$env{'user.domain'}; }
3718: if (!$uname) { $uname=$env{'user.name'}; }
3719: my $uhome=&homeserver($uname,$udomain);
3720:
3721: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
3722: }
3723:
3724: # -------------------------------------------------------------- dump interface
3725:
3726: sub dump {
3727: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
3728: if (!$udomain) { $udomain=$env{'user.domain'}; }
3729: if (!$uname) { $uname=$env{'user.name'}; }
3730: my $uhome=&homeserver($uname,$udomain);
3731: if ($regexp) {
3732: $regexp=&escape($regexp);
3733: } else {
3734: $regexp='.';
3735: }
3736: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
3737: my @pairs=split(/\&/,$rep);
3738: my %returnhash=();
3739: foreach my $item (@pairs) {
3740: my ($key,$value)=split(/=/,$item,2);
3741: $key = &unescape($key);
3742: next if ($key =~ /^error: 2 /);
3743: $returnhash{$key}=&thaw_unescape($value);
3744: }
3745: return %returnhash;
3746: }
3747:
3748: # --------------------------------------------------------- dumpstore interface
3749:
3750: sub dumpstore {
3751: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
3752: if (!$udomain) { $udomain=$env{'user.domain'}; }
3753: if (!$uname) { $uname=$env{'user.name'}; }
3754: my $uhome=&homeserver($uname,$udomain);
3755: if ($regexp) {
3756: $regexp=&escape($regexp);
3757: } else {
3758: $regexp='.';
3759: }
3760: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
3761: my @pairs=split(/\&/,$rep);
3762: my %returnhash=();
3763: foreach my $item (@pairs) {
3764: my ($key,$value)=split(/=/,$item,2);
3765: next if ($key =~ /^error: 2 /);
3766: $returnhash{$key}=&thaw_unescape($value);
3767: }
3768: return %returnhash;
3769: }
3770:
3771: # -------------------------------------------------------------- keys interface
3772:
3773: sub getkeys {
3774: my ($namespace,$udomain,$uname)=@_;
3775: if (!$udomain) { $udomain=$env{'user.domain'}; }
3776: if (!$uname) { $uname=$env{'user.name'}; }
3777: my $uhome=&homeserver($uname,$udomain);
3778: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
3779: my @keyarray=();
3780: foreach my $key (split(/\&/,$rep)) {
3781: next if ($key =~ /^error: 2 /);
3782: push(@keyarray,&unescape($key));
3783: }
3784: return @keyarray;
3785: }
3786:
3787: # --------------------------------------------------------------- currentdump
3788: sub currentdump {
3789: my ($courseid,$sdom,$sname)=@_;
3790: $courseid = $env{'request.course.id'} if (! defined($courseid));
3791: $sdom = $env{'user.domain'} if (! defined($sdom));
3792: $sname = $env{'user.name'} if (! defined($sname));
3793: my $uhome = &homeserver($sname,$sdom);
3794: my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
3795: return if ($rep =~ /^(error:|no_such_host)/);
3796: #
3797: my %returnhash=();
3798: #
3799: if ($rep eq "unknown_cmd") {
3800: # an old lond will not know currentdump
3801: # Do a dump and make it look like a currentdump
3802: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
3803: return if ($tmp[0] =~ /^(error:|no_such_host)/);
3804: my %hash = @tmp;
3805: @tmp=();
3806: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
3807: } else {
3808: my @pairs=split(/\&/,$rep);
3809: foreach my $pair (@pairs) {
3810: my ($key,$value)=split(/=/,$pair,2);
3811: my ($symb,$param) = split(/:/,$key);
3812: $returnhash{&unescape($symb)}->{&unescape($param)} =
3813: &thaw_unescape($value);
3814: }
3815: }
3816: return %returnhash;
3817: }
3818:
3819: sub convert_dump_to_currentdump{
3820: my %hash = %{shift()};
3821: my %returnhash;
3822: # Code ripped from lond, essentially. The only difference
3823: # here is the unescaping done by lonnet::dump(). Conceivably
3824: # we might run in to problems with parameter names =~ /^v\./
3825: while (my ($key,$value) = each(%hash)) {
3826: my ($v,$symb,$param) = split(/:/,$key);
3827: $symb = &unescape($symb);
3828: $param = &unescape($param);
3829: next if ($v eq 'version' || $symb eq 'keys');
3830: next if (exists($returnhash{$symb}) &&
3831: exists($returnhash{$symb}->{$param}) &&
3832: $returnhash{$symb}->{'v.'.$param} > $v);
3833: $returnhash{$symb}->{$param}=$value;
3834: $returnhash{$symb}->{'v.'.$param}=$v;
3835: }
3836: #
3837: # Remove all of the keys in the hashes which keep track of
3838: # the version of the parameter.
3839: while (my ($symb,$param_hash) = each(%returnhash)) {
3840: # use a foreach because we are going to delete from the hash.
3841: foreach my $key (keys(%$param_hash)) {
3842: delete($param_hash->{$key}) if ($key =~ /^v\./);
3843: }
3844: }
3845: return \%returnhash;
3846: }
3847:
3848: # ------------------------------------------------------ critical inc interface
3849:
3850: sub cinc {
3851: return &inc(@_,'critical');
3852: }
3853:
3854: # --------------------------------------------------------------- inc interface
3855:
3856: sub inc {
3857: my ($namespace,$store,$udomain,$uname,$critical) = @_;
3858: if (!$udomain) { $udomain=$env{'user.domain'}; }
3859: if (!$uname) { $uname=$env{'user.name'}; }
3860: my $uhome=&homeserver($uname,$udomain);
3861: my $items='';
3862: if (! ref($store)) {
3863: # got a single value, so use that instead
3864: $items = &escape($store).'=&';
3865: } elsif (ref($store) eq 'SCALAR') {
3866: $items = &escape($$store).'=&';
3867: } elsif (ref($store) eq 'ARRAY') {
3868: $items = join('=&',map {&escape($_);} @{$store});
3869: } elsif (ref($store) eq 'HASH') {
3870: while (my($key,$value) = each(%{$store})) {
3871: $items.= &escape($key).'='.&escape($value).'&';
3872: }
3873: }
3874: $items=~s/\&$//;
3875: if ($critical) {
3876: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
3877: } else {
3878: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
3879: }
3880: }
3881:
3882: # --------------------------------------------------------------- put interface
3883:
3884: sub put {
3885: my ($namespace,$storehash,$udomain,$uname)=@_;
3886: if (!$udomain) { $udomain=$env{'user.domain'}; }
3887: if (!$uname) { $uname=$env{'user.name'}; }
3888: my $uhome=&homeserver($uname,$udomain);
3889: my $items='';
3890: foreach my $item (keys(%$storehash)) {
3891: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
3892: }
3893: $items=~s/\&$//;
3894: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
3895: }
3896:
3897: # ------------------------------------------------------------ newput interface
3898:
3899: sub newput {
3900: my ($namespace,$storehash,$udomain,$uname)=@_;
3901: if (!$udomain) { $udomain=$env{'user.domain'}; }
3902: if (!$uname) { $uname=$env{'user.name'}; }
3903: my $uhome=&homeserver($uname,$udomain);
3904: my $items='';
3905: foreach my $key (keys(%$storehash)) {
3906: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3907: }
3908: $items=~s/\&$//;
3909: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
3910: }
3911:
3912: # --------------------------------------------------------- putstore interface
3913:
3914: sub putstore {
3915: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
3916: if (!$udomain) { $udomain=$env{'user.domain'}; }
3917: if (!$uname) { $uname=$env{'user.name'}; }
3918: my $uhome=&homeserver($uname,$udomain);
3919: my $items='';
3920: foreach my $key (keys(%$storehash)) {
3921: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
3922: }
3923: $items=~s/\&$//;
3924: my $esc_symb=&escape($symb);
3925: my $esc_v=&escape($version);
3926: my $reply =
3927: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
3928: $uhome);
3929: if ($reply eq 'unknown_cmd') {
3930: # gfall back to way things use to be done
3931: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
3932: $uname);
3933: }
3934: return $reply;
3935: }
3936:
3937: sub old_putstore {
3938: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
3939: if (!$udomain) { $udomain=$env{'user.domain'}; }
3940: if (!$uname) { $uname=$env{'user.name'}; }
3941: my $uhome=&homeserver($uname,$udomain);
3942: my %newstorehash;
3943: foreach my $item (keys(%$storehash)) {
3944: my $key = $version.':'.&escape($symb).':'.$item;
3945: $newstorehash{$key} = $storehash->{$item};
3946: }
3947: my $items='';
3948: my %allitems = ();
3949: foreach my $item (keys(%newstorehash)) {
3950: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
3951: my $key = $1.':keys:'.$2;
3952: $allitems{$key} .= $3.':';
3953: }
3954: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
3955: }
3956: foreach my $item (keys(%allitems)) {
3957: $allitems{$item} =~ s/\:$//;
3958: $items.= $item.'='.$allitems{$item}.'&';
3959: }
3960: $items=~s/\&$//;
3961: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
3962: }
3963:
3964: # ------------------------------------------------------ critical put interface
3965:
3966: sub cput {
3967: my ($namespace,$storehash,$udomain,$uname)=@_;
3968: if (!$udomain) { $udomain=$env{'user.domain'}; }
3969: if (!$uname) { $uname=$env{'user.name'}; }
3970: my $uhome=&homeserver($uname,$udomain);
3971: my $items='';
3972: foreach my $item (keys(%$storehash)) {
3973: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
3974: }
3975: $items=~s/\&$//;
3976: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
3977: }
3978:
3979: # -------------------------------------------------------------- eget interface
3980:
3981: sub eget {
3982: my ($namespace,$storearr,$udomain,$uname)=@_;
3983: my $items='';
3984: foreach my $item (@$storearr) {
3985: $items.=&escape($item).'&';
3986: }
3987: $items=~s/\&$//;
3988: if (!$udomain) { $udomain=$env{'user.domain'}; }
3989: if (!$uname) { $uname=$env{'user.name'}; }
3990: my $uhome=&homeserver($uname,$udomain);
3991: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
3992: my @pairs=split(/\&/,$rep);
3993: my %returnhash=();
3994: my $i=0;
3995: foreach my $item (@$storearr) {
3996: $returnhash{$item}=&thaw_unescape($pairs[$i]);
3997: $i++;
3998: }
3999: return %returnhash;
4000: }
4001:
4002: # ------------------------------------------------------------ tmpput interface
4003: sub tmpput {
4004: my ($storehash,$server,$context)=@_;
4005: my $items='';
4006: foreach my $item (keys(%$storehash)) {
4007: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4008: }
4009: $items=~s/\&$//;
4010: if (defined($context)) {
4011: $items .= ':'.&escape($context);
4012: }
4013: return &reply("tmpput:$items",$server);
4014: }
4015:
4016: # ------------------------------------------------------------ tmpget interface
4017: sub tmpget {
4018: my ($token,$server)=@_;
4019: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
4020: my $rep=&reply("tmpget:$token",$server);
4021: my %returnhash;
4022: foreach my $item (split(/\&/,$rep)) {
4023: my ($key,$value)=split(/=/,$item);
4024: next if ($key =~ /^error: 2 /);
4025: $returnhash{&unescape($key)}=&thaw_unescape($value);
4026: }
4027: return %returnhash;
4028: }
4029:
4030: # ------------------------------------------------------------ tmpget interface
4031: sub tmpdel {
4032: my ($token,$server)=@_;
4033: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
4034: return &reply("tmpdel:$token",$server);
4035: }
4036:
4037: # -------------------------------------------------- portfolio access checking
4038:
4039: sub portfolio_access {
4040: my ($requrl) = @_;
4041: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
4042: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
4043: if ($result) {
4044: my %setters;
4045: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4046: my ($startblock,$endblock) =
4047: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
4048: if ($startblock && $endblock) {
4049: return 'B';
4050: }
4051: } else {
4052: my ($startblock,$endblock) =
4053: &Apache::loncommon::blockcheck(\%setters,'port');
4054: if ($startblock && $endblock) {
4055: return 'B';
4056: }
4057: }
4058: }
4059: if ($result eq 'ok') {
4060: return 'F';
4061: } elsif ($result =~ /^[^:]+:guest_/) {
4062: return 'A';
4063: }
4064: return '';
4065: }
4066:
4067: sub get_portfolio_access {
4068: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
4069:
4070: if (!ref($access_hash)) {
4071: my $current_perms = &get_portfile_permissions($udom,$unum);
4072: my %access_controls = &get_access_controls($current_perms,$group,
4073: $file_name);
4074: $access_hash = $access_controls{$file_name};
4075: }
4076:
4077: my ($public,$guest,@domains,@users,@courses,@groups);
4078: my $now = time;
4079: if (ref($access_hash) eq 'HASH') {
4080: foreach my $key (keys(%{$access_hash})) {
4081: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
4082: if ($start > $now) {
4083: next;
4084: }
4085: if ($end && $end<$now) {
4086: next;
4087: }
4088: if ($scope eq 'public') {
4089: $public = $key;
4090: last;
4091: } elsif ($scope eq 'guest') {
4092: $guest = $key;
4093: } elsif ($scope eq 'domains') {
4094: push(@domains,$key);
4095: } elsif ($scope eq 'users') {
4096: push(@users,$key);
4097: } elsif ($scope eq 'course') {
4098: push(@courses,$key);
4099: } elsif ($scope eq 'group') {
4100: push(@groups,$key);
4101: }
4102: }
4103: if ($public) {
4104: return 'ok';
4105: }
4106: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4107: if ($guest) {
4108: return $guest;
4109: }
4110: } else {
4111: if (@domains > 0) {
4112: foreach my $domkey (@domains) {
4113: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
4114: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
4115: return 'ok';
4116: }
4117: }
4118: }
4119: }
4120: if (@users > 0) {
4121: foreach my $userkey (@users) {
4122: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
4123: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
4124: if (ref($item) eq 'HASH') {
4125: if (($item->{'uname'} eq $env{'user.name'}) &&
4126: ($item->{'udom'} eq $env{'user.domain'})) {
4127: return 'ok';
4128: }
4129: }
4130: }
4131: }
4132: }
4133: }
4134: my %roleshash;
4135: my @courses_and_groups = @courses;
4136: push(@courses_and_groups,@groups);
4137: if (@courses_and_groups > 0) {
4138: my (%allgroups,%allroles);
4139: my ($start,$end,$role,$sec,$group);
4140: foreach my $envkey (%env) {
4141: if ($envkey =~ m-^user\.role\.(gr|cc|in|ta|ep|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
4142: my $cid = $2.'_'.$3;
4143: if ($1 eq 'gr') {
4144: $group = $4;
4145: $allgroups{$cid}{$group} = $env{$envkey};
4146: } else {
4147: if ($4 eq '') {
4148: $sec = 'none';
4149: } else {
4150: $sec = $4;
4151: }
4152: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4153: }
4154: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
4155: my $cid = $2.'_'.$3;
4156: if ($4 eq '') {
4157: $sec = 'none';
4158: } else {
4159: $sec = $4;
4160: }
4161: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4162: }
4163: }
4164: if (keys(%allroles) == 0) {
4165: return;
4166: }
4167: foreach my $key (@courses_and_groups) {
4168: my %content = %{$$access_hash{$key}};
4169: my $cnum = $content{'number'};
4170: my $cdom = $content{'domain'};
4171: my $cid = $cdom.'_'.$cnum;
4172: if (!exists($allroles{$cid})) {
4173: next;
4174: }
4175: foreach my $role_id (keys(%{$content{'roles'}})) {
4176: my @sections = @{$content{'roles'}{$role_id}{'section'}};
4177: my @groups = @{$content{'roles'}{$role_id}{'group'}};
4178: my @status = @{$content{'roles'}{$role_id}{'access'}};
4179: my @roles = @{$content{'roles'}{$role_id}{'role'}};
4180: foreach my $role (keys(%{$allroles{$cid}})) {
4181: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
4182: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
4183: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
4184: if (grep/^all$/,@sections) {
4185: return 'ok';
4186: } else {
4187: if (grep/^$sec$/,@sections) {
4188: return 'ok';
4189: }
4190: }
4191: }
4192: }
4193: if (keys(%{$allgroups{$cid}}) == 0) {
4194: if (grep/^none$/,@groups) {
4195: return 'ok';
4196: }
4197: } else {
4198: if (grep/^all$/,@groups) {
4199: return 'ok';
4200: }
4201: foreach my $group (keys(%{$allgroups{$cid}})) {
4202: if (grep/^$group$/,@groups) {
4203: return 'ok';
4204: }
4205: }
4206: }
4207: }
4208: }
4209: }
4210: }
4211: }
4212: if ($guest) {
4213: return $guest;
4214: }
4215: }
4216: }
4217: return;
4218: }
4219:
4220: sub course_group_datechecker {
4221: my ($dates,$now,$status) = @_;
4222: my ($start,$end) = split(/\./,$dates);
4223: if (!$start && !$end) {
4224: return 'ok';
4225: }
4226: if (grep/^active$/,@{$status}) {
4227: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
4228: return 'ok';
4229: }
4230: }
4231: if (grep/^previous$/,@{$status}) {
4232: if ($end > $now ) {
4233: return 'ok';
4234: }
4235: }
4236: if (grep/^future$/,@{$status}) {
4237: if ($start > $now) {
4238: return 'ok';
4239: }
4240: }
4241: return;
4242: }
4243:
4244: sub parse_portfolio_url {
4245: my ($url) = @_;
4246:
4247: my ($type,$udom,$unum,$group,$file_name);
4248:
4249: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
4250: $type = 1;
4251: $udom = $1;
4252: $unum = $2;
4253: $file_name = $3;
4254: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
4255: $type = 2;
4256: $udom = $1;
4257: $unum = $2;
4258: $group = $3;
4259: $file_name = $3.'/'.$4;
4260: }
4261: if (wantarray) {
4262: return ($type,$udom,$unum,$file_name,$group);
4263: }
4264: return $type;
4265: }
4266:
4267: sub is_portfolio_url {
4268: my ($url) = @_;
4269: return scalar(&parse_portfolio_url($url));
4270: }
4271:
4272: sub is_portfolio_file {
4273: my ($file) = @_;
4274: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
4275: return 1;
4276: }
4277: return;
4278: }
4279:
4280:
4281: # ---------------------------------------------- Custom access rule evaluation
4282:
4283: sub customaccess {
4284: my ($priv,$uri)=@_;
4285: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
4286: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
4287: $udom = &LONCAPA::clean_domain($udom);
4288: $ucrs = &LONCAPA::clean_username($ucrs);
4289: my $access=0;
4290: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
4291: my ($effect,$realm,$role,$type)=split(/\:/,$right);
4292: if ($type eq 'user') {
4293: foreach my $scope (split(/\s*\,\s*/,$realm)) {
4294: my ($tdom,$tuname)=split(m{/},$scope);
4295: if ($tdom) {
4296: if ($tdom ne $env{'user.domain'}) { next; }
4297: }
4298: if ($tuname) {
4299: if ($tuname ne $env{'user.name'}) { next; }
4300: }
4301: $access=($effect eq 'allow');
4302: last;
4303: }
4304: } else {
4305: if ($role) {
4306: if ($role ne $urole) { next; }
4307: }
4308: foreach my $scope (split(/\s*\,\s*/,$realm)) {
4309: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
4310: if ($tdom) {
4311: if ($tdom ne $udom) { next; }
4312: }
4313: if ($tcrs) {
4314: if ($tcrs ne $ucrs) { next; }
4315: }
4316: if ($tsec) {
4317: if ($tsec ne $usec) { next; }
4318: }
4319: $access=($effect eq 'allow');
4320: last;
4321: }
4322: if ($realm eq '' && $role eq '') {
4323: $access=($effect eq 'allow');
4324: }
4325: }
4326: }
4327: return $access;
4328: }
4329:
4330: # ------------------------------------------------- Check for a user privilege
4331:
4332: sub allowed {
4333: my ($priv,$uri,$symb,$role)=@_;
4334: my $ver_orguri=$uri;
4335: $uri=&deversion($uri);
4336: my $orguri=$uri;
4337: $uri=&declutter($uri);
4338:
4339: if ($priv eq 'evb') {
4340: # Evade communication block restrictions for specified role in a course
4341: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
4342: return $1;
4343: } else {
4344: return;
4345: }
4346: }
4347:
4348: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
4349: # Free bre access to adm and meta resources
4350: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
4351: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
4352: && ($priv eq 'bre')) {
4353: return 'F';
4354: }
4355:
4356: # Free bre access to user's own portfolio contents
4357: my ($space,$domain,$name,@dir)=split('/',$uri);
4358: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
4359: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
4360: my %setters;
4361: my ($startblock,$endblock) =
4362: &Apache::loncommon::blockcheck(\%setters,'port');
4363: if ($startblock && $endblock) {
4364: return 'B';
4365: } else {
4366: return 'F';
4367: }
4368: }
4369:
4370: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
4371: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
4372: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
4373: if (exists($env{'request.course.id'})) {
4374: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4375: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4376: if (($domain eq $cdom) && ($name eq $cnum)) {
4377: my $courseprivid=$env{'request.course.id'};
4378: $courseprivid=~s/\_/\//;
4379: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
4380: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
4381: return $1;
4382: } else {
4383: if ($env{'request.course.sec'}) {
4384: $courseprivid.='/'.$env{'request.course.sec'};
4385: }
4386: if ($env{'user.priv.'.$env{'request.role'}.'./'.
4387: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
4388: return $2;
4389: }
4390: }
4391: }
4392: }
4393: }
4394:
4395: # Free bre to public access
4396:
4397: if ($priv eq 'bre') {
4398: my $copyright=&metadata($uri,'copyright');
4399: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
4400: return 'F';
4401: }
4402: if ($copyright eq 'priv') {
4403: $uri=~/([^\/]+)\/([^\/]+)\//;
4404: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
4405: return '';
4406: }
4407: }
4408: if ($copyright eq 'domain') {
4409: $uri=~/([^\/]+)\/([^\/]+)\//;
4410: unless (($env{'user.domain'} eq $1) ||
4411: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
4412: return '';
4413: }
4414: }
4415: if ($env{'request.role'}=~ /li\.\//) {
4416: # Library role, so allow browsing of resources in this domain.
4417: return 'F';
4418: }
4419: if ($copyright eq 'custom') {
4420: unless (&customaccess($priv,$uri)) { return ''; }
4421: }
4422: }
4423: # Domain coordinator is trying to create a course
4424: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
4425: # uri is the requested domain in this case.
4426: # comparison to 'request.role.domain' shows if the user has selected
4427: # a role of dc for the domain in question.
4428: return 'F' if ($uri eq $env{'request.role.domain'});
4429: }
4430:
4431: my $thisallowed='';
4432: my $statecond=0;
4433: my $courseprivid='';
4434:
4435: # Course
4436:
4437: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
4438: $thisallowed.=$1;
4439: }
4440:
4441: # Domain
4442:
4443: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
4444: =~/\Q$priv\E\&([^\:]*)/) {
4445: $thisallowed.=$1;
4446: }
4447:
4448: # Course: uri itself is a course
4449: my $courseuri=$uri;
4450: $courseuri=~s/\_(\d)/\/$1/;
4451: $courseuri=~s/^([^\/])/\/$1/;
4452:
4453: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
4454: =~/\Q$priv\E\&([^\:]*)/) {
4455: $thisallowed.=$1;
4456: }
4457:
4458: # URI is an uploaded document for this course, default permissions don't matter
4459: # not allowing 'edit' access (editupload) to uploaded course docs
4460: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
4461: $thisallowed='';
4462: my ($match)=&is_on_map($uri);
4463: if ($match) {
4464: if ($env{'user.priv.'.$env{'request.role'}.'./'}
4465: =~/\Q$priv\E\&([^\:]*)/) {
4466: $thisallowed.=$1;
4467: }
4468: } else {
4469: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
4470: if ($refuri) {
4471: if ($refuri =~ m|^/adm/|) {
4472: $thisallowed='F';
4473: } else {
4474: $refuri=&declutter($refuri);
4475: my ($match) = &is_on_map($refuri);
4476: if ($match) {
4477: $thisallowed='F';
4478: }
4479: }
4480: }
4481: }
4482: }
4483:
4484: if ($priv eq 'bre'
4485: && $thisallowed ne 'F'
4486: && $thisallowed ne '2'
4487: && &is_portfolio_url($uri)) {
4488: $thisallowed = &portfolio_access($uri);
4489: }
4490:
4491: # Full access at system, domain or course-wide level? Exit.
4492:
4493: if ($thisallowed=~/F/) {
4494: return 'F';
4495: }
4496:
4497: # If this is generating or modifying users, exit with special codes
4498:
4499: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
4500: if (($priv eq 'cca') || ($priv eq 'caa')) {
4501: my ($audom,$auname)=split('/',$uri);
4502: # no author name given, so this just checks on the general right to make a co-author in this domain
4503: unless ($auname) { return $thisallowed; }
4504: # an author name is given, so we are about to actually make a co-author for a certain account
4505: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
4506: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
4507: ($audom ne $env{'request.role.domain'}))) { return ''; }
4508: }
4509: return $thisallowed;
4510: }
4511: #
4512: # Gathered so far: system, domain and course wide privileges
4513: #
4514: # Course: See if uri or referer is an individual resource that is part of
4515: # the course
4516:
4517: if ($env{'request.course.id'}) {
4518:
4519: $courseprivid=$env{'request.course.id'};
4520: if ($env{'request.course.sec'}) {
4521: $courseprivid.='/'.$env{'request.course.sec'};
4522: }
4523: $courseprivid=~s/\_/\//;
4524: my $checkreferer=1;
4525: my ($match,$cond)=&is_on_map($uri);
4526: if ($match) {
4527: $statecond=$cond;
4528: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
4529: =~/\Q$priv\E\&([^\:]*)/) {
4530: $thisallowed.=$1;
4531: $checkreferer=0;
4532: }
4533: }
4534:
4535: if ($checkreferer) {
4536: my $refuri=$env{'httpref.'.$orguri};
4537: unless ($refuri) {
4538: foreach my $key (keys(%env)) {
4539: if ($key=~/^httpref\..*\*/) {
4540: my $pattern=$key;
4541: $pattern=~s/^httpref\.\/res\///;
4542: $pattern=~s/\*/\[\^\/\]\+/g;
4543: $pattern=~s/\//\\\//g;
4544: if ($orguri=~/$pattern/) {
4545: $refuri=$env{$key};
4546: }
4547: }
4548: }
4549: }
4550:
4551: if ($refuri) {
4552: $refuri=&declutter($refuri);
4553: my ($match,$cond)=&is_on_map($refuri);
4554: if ($match) {
4555: my $refstatecond=$cond;
4556: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
4557: =~/\Q$priv\E\&([^\:]*)/) {
4558: $thisallowed.=$1;
4559: $uri=$refuri;
4560: $statecond=$refstatecond;
4561: }
4562: }
4563: }
4564: }
4565: }
4566:
4567: #
4568: # Gathered now: all privileges that could apply, and condition number
4569: #
4570: #
4571: # Full or no access?
4572: #
4573:
4574: if ($thisallowed=~/F/) {
4575: return 'F';
4576: }
4577:
4578: unless ($thisallowed) {
4579: return '';
4580: }
4581:
4582: # Restrictions exist, deal with them
4583: #
4584: # C:according to course preferences
4585: # R:according to resource settings
4586: # L:unless locked
4587: # X:according to user session state
4588: #
4589:
4590: # Possibly locked functionality, check all courses
4591: # Locks might take effect only after 10 minutes cache expiration for other
4592: # courses, and 2 minutes for current course
4593:
4594: my $envkey;
4595: if ($thisallowed=~/L/) {
4596: foreach $envkey (keys %env) {
4597: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
4598: my $courseid=$2;
4599: my $roleid=$1.'.'.$2;
4600: $courseid=~s/^\///;
4601: my $expiretime=600;
4602: if ($env{'request.role'} eq $roleid) {
4603: $expiretime=120;
4604: }
4605: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
4606: my $prefix='course.'.$cdom.'_'.$cnum.'.';
4607: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
4608: &coursedescription($courseid,{'freshen_cache' => 1});
4609: }
4610: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
4611: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
4612: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
4613: &log($env{'user.domain'},$env{'user.name'},
4614: $env{'user.home'},
4615: 'Locked by res: '.$priv.' for '.$uri.' due to '.
4616: $cdom.'/'.$cnum.'/'.$csec.' expire '.
4617: $env{$prefix.'priv.'.$priv.'.lock.expire'});
4618: return '';
4619: }
4620: }
4621: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
4622: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
4623: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
4624: &log($env{'user.domain'},$env{'user.name'},
4625: $env{'user.home'},
4626: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
4627: $cdom.'/'.$cnum.'/'.$csec.' expire '.
4628: $env{$prefix.'priv.'.$priv.'.lock.expire'});
4629: return '';
4630: }
4631: }
4632: }
4633: }
4634: }
4635:
4636: #
4637: # Rest of the restrictions depend on selected course
4638: #
4639:
4640: unless ($env{'request.course.id'}) {
4641: if ($thisallowed eq 'A') {
4642: return 'A';
4643: } elsif ($thisallowed eq 'B') {
4644: return 'B';
4645: } else {
4646: return '1';
4647: }
4648: }
4649:
4650: #
4651: # Now user is definitely in a course
4652: #
4653:
4654:
4655: # Course preferences
4656:
4657: if ($thisallowed=~/C/) {
4658: my $rolecode=(split(/\./,$env{'request.role'}))[0];
4659: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
4660: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
4661: =~/\Q$rolecode\E/) {
4662: if ($priv ne 'pch') {
4663: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
4664: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
4665: $env{'request.course.id'});
4666: }
4667: return '';
4668: }
4669:
4670: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
4671: =~/\Q$unamedom\E/) {
4672: if ($priv ne 'pch') {
4673: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
4674: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
4675: $env{'request.course.id'});
4676: }
4677: return '';
4678: }
4679: }
4680:
4681: # Resource preferences
4682:
4683: if ($thisallowed=~/R/) {
4684: my $rolecode=(split(/\./,$env{'request.role'}))[0];
4685: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
4686: if ($priv ne 'pch') {
4687: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
4688: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
4689: }
4690: return '';
4691: }
4692: }
4693:
4694: # Restricted by state or randomout?
4695:
4696: if ($thisallowed=~/X/) {
4697: if ($env{'acc.randomout'}) {
4698: if (!$symb) { $symb=&symbread($uri,1); }
4699: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
4700: return '';
4701: }
4702: }
4703: if (&condval($statecond)) {
4704: return '2';
4705: } else {
4706: return '';
4707: }
4708: }
4709:
4710: if ($thisallowed eq 'A') {
4711: return 'A';
4712: } elsif ($thisallowed eq 'B') {
4713: return 'B';
4714: }
4715: return 'F';
4716: }
4717:
4718: sub split_uri_for_cond {
4719: my $uri=&deversion(&declutter(shift));
4720: my @uriparts=split(/\//,$uri);
4721: my $filename=pop(@uriparts);
4722: my $pathname=join('/',@uriparts);
4723: return ($pathname,$filename);
4724: }
4725: # --------------------------------------------------- Is a resource on the map?
4726:
4727: sub is_on_map {
4728: my ($pathname,$filename) = &split_uri_for_cond(shift);
4729: #Trying to find the conditional for the file
4730: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
4731: /\&\Q$filename\E\:([\d\|]+)\&/);
4732: if ($match) {
4733: return (1,$1);
4734: } else {
4735: return (0,0);
4736: }
4737: }
4738:
4739: # --------------------------------------------------------- Get symb from alias
4740:
4741: sub get_symb_from_alias {
4742: my $symb=shift;
4743: my ($map,$resid,$url)=&decode_symb($symb);
4744: # Already is a symb
4745: if ($url) { return $symb; }
4746: # Must be an alias
4747: my $aliassymb='';
4748: my %bighash;
4749: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
4750: &GDBM_READER(),0640)) {
4751: my $rid=$bighash{'mapalias_'.$symb};
4752: if ($rid) {
4753: my ($mapid,$resid)=split(/\./,$rid);
4754: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
4755: $resid,$bighash{'src_'.$rid});
4756: }
4757: untie %bighash;
4758: }
4759: return $aliassymb;
4760: }
4761:
4762: # ----------------------------------------------------------------- Define Role
4763:
4764: sub definerole {
4765: if (allowed('mcr','/')) {
4766: my ($rolename,$sysrole,$domrole,$courole)=@_;
4767: foreach my $role (split(':',$sysrole)) {
4768: my ($crole,$cqual)=split(/\&/,$role);
4769: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
4770: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
4771: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
4772: return "refused:s:$crole&$cqual";
4773: }
4774: }
4775: }
4776: foreach my $role (split(':',$domrole)) {
4777: my ($crole,$cqual)=split(/\&/,$role);
4778: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
4779: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
4780: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
4781: return "refused:d:$crole&$cqual";
4782: }
4783: }
4784: }
4785: foreach my $role (split(':',$courole)) {
4786: my ($crole,$cqual)=split(/\&/,$role);
4787: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
4788: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
4789: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
4790: return "refused:c:$crole&$cqual";
4791: }
4792: }
4793: }
4794: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
4795: "$env{'user.domain'}:$env{'user.name'}:".
4796: "rolesdef_$rolename=".
4797: escape($sysrole.'_'.$domrole.'_'.$courole);
4798: return reply($command,$env{'user.home'});
4799: } else {
4800: return 'refused';
4801: }
4802: }
4803:
4804: # ---------------- Make a metadata query against the network of library servers
4805:
4806: sub metadata_query {
4807: my ($query,$custom,$customshow,$server_array)=@_;
4808: my %rhash;
4809: my %libserv = &all_library();
4810: my @server_list = (defined($server_array) ? @$server_array
4811: : keys(%libserv) );
4812: for my $server (@server_list) {
4813: unless ($custom or $customshow) {
4814: my $reply=&reply("querysend:".&escape($query),$server);
4815: $rhash{$server}=$reply;
4816: }
4817: else {
4818: my $reply=&reply("querysend:".&escape($query).':'.
4819: &escape($custom).':'.&escape($customshow),
4820: $server);
4821: $rhash{$server}=$reply;
4822: }
4823: }
4824: return \%rhash;
4825: }
4826:
4827: # ----------------------------------------- Send log queries and wait for reply
4828:
4829: sub log_query {
4830: my ($uname,$udom,$query,%filters)=@_;
4831: my $uhome=&homeserver($uname,$udom);
4832: if ($uhome eq 'no_host') { return 'error: no_host'; }
4833: my $uhost=&hostname($uhome);
4834: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
4835: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
4836: $uhome);
4837: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
4838: return get_query_reply($queryid);
4839: }
4840:
4841: # -------------------------- Update MySQL table for portfolio file
4842:
4843: sub update_portfolio_table {
4844: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
4845: my $homeserver = &homeserver($uname,$udom);
4846: my $queryid=
4847: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
4848: ':'.&escape($file_name).':'.$action,$homeserver);
4849: my $reply = &get_query_reply($queryid);
4850: return $reply;
4851: }
4852:
4853: # -------------------------- Update MySQL allusers table
4854:
4855: sub update_allusers_table {
4856: my ($uname,$udom,$names) = @_;
4857: my $homeserver = &homeserver($uname,$udom);
4858: my $queryid=
4859: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
4860: 'lastname='.&escape($names->{'lastname'}).'%%'.
4861: 'firstname='.&escape($names->{'firstname'}).'%%'.
4862: 'middlename='.&escape($names->{'middlename'}).'%%'.
4863: 'generation='.&escape($names->{'generation'}).'%%'.
4864: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
4865: 'id='.&escape($names->{'id'}),$homeserver);
4866: my $reply = &get_query_reply($queryid);
4867: return $reply;
4868: }
4869:
4870: # ------- Request retrieval of institutional classlists for course(s)
4871:
4872: sub fetch_enrollment_query {
4873: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
4874: my $homeserver;
4875: my $maxtries = 1;
4876: if ($context eq 'automated') {
4877: $homeserver = $perlvar{'lonHostID'};
4878: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
4879: } else {
4880: $homeserver = &homeserver($cnum,$dom);
4881: }
4882: my $host=&hostname($homeserver);
4883: my $cmd = '';
4884: foreach my $affiliate (keys %{$affiliatesref}) {
4885: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
4886: }
4887: $cmd =~ s/%%$//;
4888: $cmd = &escape($cmd);
4889: my $query = 'fetchenrollment';
4890: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
4891: unless ($queryid=~/^\Q$host\E\_/) {
4892: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
4893: return 'error: '.$queryid;
4894: }
4895: my $reply = &get_query_reply($queryid);
4896: my $tries = 1;
4897: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
4898: $reply = &get_query_reply($queryid);
4899: $tries ++;
4900: }
4901: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
4902: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
4903: } else {
4904: my @responses = split(/:/,$reply);
4905: if ($homeserver eq $perlvar{'lonHostID'}) {
4906: foreach my $line (@responses) {
4907: my ($key,$value) = split(/=/,$line,2);
4908: $$replyref{$key} = $value;
4909: }
4910: } else {
4911: my $pathname = $perlvar{'lonDaemons'}.'/tmp';
4912: foreach my $line (@responses) {
4913: my ($key,$value) = split(/=/,$line);
4914: $$replyref{$key} = $value;
4915: if ($value > 0) {
4916: foreach my $item (@{$$affiliatesref{$key}}) {
4917: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
4918: my $destname = $pathname.'/'.$filename;
4919: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
4920: if ($xml_classlist =~ /^error/) {
4921: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
4922: } else {
4923: if ( open(FILE,">$destname") ) {
4924: print FILE &unescape($xml_classlist);
4925: close(FILE);
4926: } else {
4927: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
4928: }
4929: }
4930: }
4931: }
4932: }
4933: }
4934: return 'ok';
4935: }
4936: return 'error';
4937: }
4938:
4939: sub get_query_reply {
4940: my $queryid=shift;
4941: my $replyfile=$perlvar{'lonDaemons'}.'/tmp/'.$queryid;
4942: my $reply='';
4943: for (1..100) {
4944: sleep 2;
4945: if (-e $replyfile.'.end') {
4946: if (open(my $fh,$replyfile)) {
4947: $reply = join('',<$fh>);
4948: close($fh);
4949: } else { return 'error: reply_file_error'; }
4950: return &unescape($reply);
4951: }
4952: }
4953: return 'timeout:'.$queryid;
4954: }
4955:
4956: sub courselog_query {
4957: #
4958: # possible filters:
4959: # url: url or symb
4960: # username
4961: # domain
4962: # action: view, submit, grade
4963: # start: timestamp
4964: # end: timestamp
4965: #
4966: my (%filters)=@_;
4967: unless ($env{'request.course.id'}) { return 'no_course'; }
4968: if ($filters{'url'}) {
4969: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
4970: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
4971: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
4972: }
4973: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
4974: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4975: return &log_query($cname,$cdom,'courselog',%filters);
4976: }
4977:
4978: sub userlog_query {
4979: #
4980: # possible filters:
4981: # action: log check role
4982: # start: timestamp
4983: # end: timestamp
4984: #
4985: my ($uname,$udom,%filters)=@_;
4986: return &log_query($uname,$udom,'userlog',%filters);
4987: }
4988:
4989: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
4990:
4991: sub auto_run {
4992: my ($cnum,$cdom) = @_;
4993: my $response = 0;
4994: my $settings;
4995: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
4996: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
4997: $settings = $domconfig{'autoenroll'};
4998: if ($settings->{'run'} eq '1') {
4999: $response = 1;
5000: }
5001: } else {
5002: my $homeserver;
5003: if (&is_course($cdom,$cnum)) {
5004: $homeserver = &homeserver($cnum,$cdom);
5005: } else {
5006: $homeserver = &domain($cdom,'primary');
5007: }
5008: if ($homeserver ne 'no_host') {
5009: $response = &reply('autorun:'.$cdom,$homeserver);
5010: }
5011: }
5012: return $response;
5013: }
5014:
5015: sub auto_get_sections {
5016: my ($cnum,$cdom,$inst_coursecode) = @_;
5017: my $homeserver = &homeserver($cnum,$cdom);
5018: my @secs = ();
5019: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
5020: unless ($response eq 'refused') {
5021: @secs = split(/:/,$response);
5022: }
5023: return @secs;
5024: }
5025:
5026: sub auto_new_course {
5027: my ($cnum,$cdom,$inst_course_id,$owner) = @_;
5028: my $homeserver = &homeserver($cnum,$cdom);
5029: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.$owner.':'.$cdom,$homeserver));
5030: return $response;
5031: }
5032:
5033: sub auto_validate_courseID {
5034: my ($cnum,$cdom,$inst_course_id) = @_;
5035: my $homeserver = &homeserver($cnum,$cdom);
5036: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
5037: return $response;
5038: }
5039:
5040: sub auto_create_password {
5041: my ($cnum,$cdom,$authparam,$udom) = @_;
5042: my ($homeserver,$response);
5043: my $create_passwd = 0;
5044: my $authchk = '';
5045: if ($udom =~ /^$match_domain$/) {
5046: $homeserver = &domain($udom,'primary');
5047: }
5048: if ($homeserver eq '') {
5049: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
5050: $homeserver = &homeserver($cnum,$cdom);
5051: }
5052: }
5053: if ($homeserver eq '') {
5054: $authchk = 'nodomain';
5055: } else {
5056: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
5057: if ($response eq 'refused') {
5058: $authchk = 'refused';
5059: } else {
5060: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
5061: }
5062: }
5063: return ($authparam,$create_passwd,$authchk);
5064: }
5065:
5066: sub auto_photo_permission {
5067: my ($cnum,$cdom,$students) = @_;
5068: my $homeserver = &homeserver($cnum,$cdom);
5069: my ($outcome,$perm_reqd,$conditions) =
5070: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
5071: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5072: return (undef,undef);
5073: }
5074: return ($outcome,$perm_reqd,$conditions);
5075: }
5076:
5077: sub auto_checkphotos {
5078: my ($uname,$udom,$pid) = @_;
5079: my $homeserver = &homeserver($uname,$udom);
5080: my ($result,$resulttype);
5081: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
5082: &escape($uname).':'.&escape($pid),
5083: $homeserver));
5084: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5085: return (undef,undef);
5086: }
5087: if ($outcome) {
5088: ($result,$resulttype) = split(/:/,$outcome);
5089: }
5090: return ($result,$resulttype);
5091: }
5092:
5093: sub auto_photochoice {
5094: my ($cnum,$cdom) = @_;
5095: my $homeserver = &homeserver($cnum,$cdom);
5096: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
5097: &escape($cdom),
5098: $homeserver)));
5099: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5100: return (undef,undef);
5101: }
5102: return ($update,$comment);
5103: }
5104:
5105: sub auto_photoupdate {
5106: my ($affiliatesref,$dom,$cnum,$photo) = @_;
5107: my $homeserver = &homeserver($cnum,$dom);
5108: my $host=&hostname($homeserver);
5109: my $cmd = '';
5110: my $maxtries = 1;
5111: foreach my $affiliate (keys(%{$affiliatesref})) {
5112: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
5113: }
5114: $cmd =~ s/%%$//;
5115: $cmd = &escape($cmd);
5116: my $query = 'institutionalphotos';
5117: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
5118: unless ($queryid=~/^\Q$host\E\_/) {
5119: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
5120: return 'error: '.$queryid;
5121: }
5122: my $reply = &get_query_reply($queryid);
5123: my $tries = 1;
5124: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
5125: $reply = &get_query_reply($queryid);
5126: $tries ++;
5127: }
5128: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
5129: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
5130: } else {
5131: my @responses = split(/:/,$reply);
5132: my $outcome = shift(@responses);
5133: foreach my $item (@responses) {
5134: my ($key,$value) = split(/=/,$item);
5135: $$photo{$key} = $value;
5136: }
5137: return $outcome;
5138: }
5139: return 'error';
5140: }
5141:
5142: sub auto_instcode_format {
5143: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
5144: $cat_order) = @_;
5145: my $courses = '';
5146: my @homeservers;
5147: if ($caller eq 'global') {
5148: my %servers = &get_servers($codedom,'library');
5149: foreach my $tryserver (keys(%servers)) {
5150: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
5151: push(@homeservers,$tryserver);
5152: }
5153: }
5154: } else {
5155: push(@homeservers,&homeserver($caller,$codedom));
5156: }
5157: foreach my $code (keys(%{$instcodes})) {
5158: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
5159: }
5160: chop($courses);
5161: my $ok_response = 0;
5162: my $response;
5163: while (@homeservers > 0 && $ok_response == 0) {
5164: my $server = shift(@homeservers);
5165: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
5166: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
5167: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
5168: split(/:/,$response);
5169: %{$codes} = (%{$codes},&str2hash($codes_str));
5170: push(@{$codetitles},&str2array($codetitles_str));
5171: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
5172: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
5173: $ok_response = 1;
5174: }
5175: }
5176: if ($ok_response) {
5177: return 'ok';
5178: } else {
5179: return $response;
5180: }
5181: }
5182:
5183: sub auto_instcode_defaults {
5184: my ($domain,$returnhash,$code_order) = @_;
5185: my @homeservers;
5186:
5187: my %servers = &get_servers($domain,'library');
5188: foreach my $tryserver (keys(%servers)) {
5189: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
5190: push(@homeservers,$tryserver);
5191: }
5192: }
5193:
5194: my $response;
5195: foreach my $server (@homeservers) {
5196: $response=&reply('autoinstcodedefaults:'.$domain,$server);
5197: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
5198:
5199: foreach my $pair (split(/\&/,$response)) {
5200: my ($name,$value)=split(/\=/,$pair);
5201: if ($name eq 'code_order') {
5202: @{$code_order} = split(/\&/,&unescape($value));
5203: } else {
5204: $returnhash->{&unescape($name)}=&unescape($value);
5205: }
5206: }
5207: return 'ok';
5208: }
5209:
5210: return $response;
5211: }
5212:
5213: sub auto_validate_class_sec {
5214: my ($cdom,$cnum,$owners,$inst_class) = @_;
5215: my $homeserver = &homeserver($cnum,$cdom);
5216: my $ownerlist;
5217: if (ref($owners) eq 'ARRAY') {
5218: $ownerlist = join(',',@{$owners});
5219: } else {
5220: $ownerlist = $owners;
5221: }
5222: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
5223: &escape($ownerlist).':'.$cdom,$homeserver);
5224: return $response;
5225: }
5226:
5227: # ------------------------------------------------------- Course Group routines
5228:
5229: sub get_coursegroups {
5230: my ($cdom,$cnum,$group,$namespace) = @_;
5231: return(&dump($namespace,$cdom,$cnum,$group));
5232: }
5233:
5234: sub modify_coursegroup {
5235: my ($cdom,$cnum,$groupsettings) = @_;
5236: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
5237: }
5238:
5239: sub toggle_coursegroup_status {
5240: my ($cdom,$cnum,$group,$action) = @_;
5241: my ($from_namespace,$to_namespace);
5242: if ($action eq 'delete') {
5243: $from_namespace = 'coursegroups';
5244: $to_namespace = 'deleted_groups';
5245: } else {
5246: $from_namespace = 'deleted_groups';
5247: $to_namespace = 'coursegroups';
5248: }
5249: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
5250: if (my $tmp = &error(%curr_group)) {
5251: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
5252: return ('read error',$tmp);
5253: } else {
5254: my %savedsettings = %curr_group;
5255: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
5256: my $deloutcome;
5257: if ($result eq 'ok') {
5258: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
5259: } else {
5260: return ('write error',$result);
5261: }
5262: if ($deloutcome eq 'ok') {
5263: return 'ok';
5264: } else {
5265: return ('delete error',$deloutcome);
5266: }
5267: }
5268: }
5269:
5270: sub modify_group_roles {
5271: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
5272: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
5273: my $role = 'gr/'.&escape($userprivs);
5274: my ($uname,$udom) = split(/:/,$user);
5275: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
5276: if ($result eq 'ok') {
5277: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
5278: }
5279: return $result;
5280: }
5281:
5282: sub modify_coursegroup_membership {
5283: my ($cdom,$cnum,$membership) = @_;
5284: my $result = &put('groupmembership',$membership,$cdom,$cnum);
5285: return $result;
5286: }
5287:
5288: sub get_active_groups {
5289: my ($udom,$uname,$cdom,$cnum) = @_;
5290: my $now = time;
5291: my %groups = ();
5292: foreach my $key (keys(%env)) {
5293: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
5294: my ($start,$end) = split(/\./,$env{$key});
5295: if (($end!=0) && ($end<$now)) { next; }
5296: if (($start!=0) && ($start>$now)) { next; }
5297: if ($1 eq $cdom && $2 eq $cnum) {
5298: $groups{$3} = $env{$key} ;
5299: }
5300: }
5301: }
5302: return %groups;
5303: }
5304:
5305: sub get_group_membership {
5306: my ($cdom,$cnum,$group) = @_;
5307: return(&dump('groupmembership',$cdom,$cnum,$group));
5308: }
5309:
5310: sub get_users_groups {
5311: my ($udom,$uname,$courseid) = @_;
5312: my @usersgroups;
5313: my $cachetime=1800;
5314:
5315: my $hashid="$udom:$uname:$courseid";
5316: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
5317: if (defined($cached)) {
5318: @usersgroups = split(/:/,$grouplist);
5319: } else {
5320: $grouplist = '';
5321: my $courseurl = &courseid_to_courseurl($courseid);
5322: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
5323: my $access_end = $env{'course.'.$courseid.
5324: '.default_enrollment_end_date'};
5325: my $now = time;
5326: foreach my $key (keys(%roleshash)) {
5327: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
5328: my $group = $1;
5329: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
5330: my $start = $2;
5331: my $end = $1;
5332: if ($start == -1) { next; } # deleted from group
5333: if (($start!=0) && ($start>$now)) { next; }
5334: if (($end!=0) && ($end<$now)) {
5335: if ($access_end && $access_end < $now) {
5336: if ($access_end - $end < 86400) {
5337: push(@usersgroups,$group);
5338: }
5339: }
5340: next;
5341: }
5342: push(@usersgroups,$group);
5343: }
5344: }
5345: }
5346: @usersgroups = &sort_course_groups($courseid,@usersgroups);
5347: $grouplist = join(':',@usersgroups);
5348: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
5349: }
5350: return @usersgroups;
5351: }
5352:
5353: sub devalidate_getgroups_cache {
5354: my ($udom,$uname,$cdom,$cnum)=@_;
5355: my $courseid = $cdom.'_'.$cnum;
5356:
5357: my $hashid="$udom:$uname:$courseid";
5358: &devalidate_cache_new('getgroups',$hashid);
5359: }
5360:
5361: # ------------------------------------------------------------------ Plain Text
5362:
5363: sub plaintext {
5364: my ($short,$type,$cid) = @_;
5365: if ($short =~ /^cr/) {
5366: return (split('/',$short))[-1];
5367: }
5368: if (!defined($cid)) {
5369: $cid = $env{'request.course.id'};
5370: }
5371: if (defined($cid) && defined($env{'course.'.$cid.'.'.$short.'.plaintext'})) {
5372: return &Apache::lonlocal::mt($env{'course.'.$cid.'.'.$short.
5373: '.plaintext'});
5374: }
5375: my %rolenames = (
5376: Course => 'std',
5377: Group => 'alt1',
5378: );
5379: if (defined($type) &&
5380: defined($rolenames{$type}) &&
5381: defined($prp{$short}{$rolenames{$type}})) {
5382: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
5383: } else {
5384: return &Apache::lonlocal::mt($prp{$short}{'std'});
5385: }
5386: }
5387:
5388: # ----------------------------------------------------------------- Assign Role
5389:
5390: sub assignrole {
5391: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
5392: $context)=@_;
5393: my $mrole;
5394: if ($role =~ /^cr\//) {
5395: my $cwosec=$url;
5396: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
5397: unless (&allowed('ccr',$cwosec)) {
5398: &logthis('Refused custom assignrole: '.
5399: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
5400: $env{'user.name'}.' at '.$env{'user.domain'});
5401: return 'refused';
5402: }
5403: $mrole='cr';
5404: } elsif ($role =~ /^gr\//) {
5405: my $cwogrp=$url;
5406: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
5407: unless (&allowed('mdg',$cwogrp)) {
5408: &logthis('Refused group assignrole: '.
5409: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
5410: $env{'user.name'}.' at '.$env{'user.domain'});
5411: return 'refused';
5412: }
5413: $mrole='gr';
5414: } else {
5415: my $cwosec=$url;
5416: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
5417: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
5418: my $refused;
5419: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
5420: if (!(&allowed('c'.$role,$url))) {
5421: $refused = 1;
5422: }
5423: } else {
5424: $refused = 1;
5425: }
5426: if ($refused) {
5427: if (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5428: $refused = '';
5429: } else {
5430: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
5431: ' '.$role.' '.$end.' '.$start.' by '.
5432: $env{'user.name'}.' at '.$env{'user.domain'});
5433: return 'refused';
5434: }
5435: }
5436: }
5437: $mrole=$role;
5438: }
5439: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
5440: "$udom:$uname:$url".'_'."$mrole=$role";
5441: if ($end) { $command.='_'.$end; }
5442: if ($start) {
5443: if ($end) {
5444: $command.='_'.$start;
5445: } else {
5446: $command.='_0_'.$start;
5447: }
5448: }
5449: my $origstart = $start;
5450: my $origend = $end;
5451: my $delflag;
5452: # actually delete
5453: if ($deleteflag) {
5454: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
5455: # modify command to delete the role
5456: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
5457: "$udom:$uname:$url".'_'."$mrole";
5458: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
5459: # set start and finish to negative values for userrolelog
5460: $start=-1;
5461: $end=-1;
5462: $delflag = 1;
5463: }
5464: }
5465: # send command
5466: my $answer=&reply($command,&homeserver($uname,$udom));
5467: # log new user role if status is ok
5468: if ($answer eq 'ok') {
5469: &userrolelog($role,$uname,$udom,$url,$start,$end);
5470: # for course roles, perform group memberships changes triggered by role change.
5471: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,$selfenroll,$context);
5472: unless ($role =~ /^gr/) {
5473: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
5474: $origstart,$selfenroll,$context);
5475: }
5476: }
5477: return $answer;
5478: }
5479:
5480: # -------------------------------------------------- Modify user authentication
5481: # Overrides without validation
5482:
5483: sub modifyuserauth {
5484: my ($udom,$uname,$umode,$upass)=@_;
5485: my $uhome=&homeserver($uname,$udom);
5486: unless (&allowed('mau',$udom)) { return 'refused'; }
5487: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
5488: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
5489: ' in domain '.$env{'request.role.domain'});
5490: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
5491: &escape($upass),$uhome);
5492: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
5493: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
5494: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
5495: &log($udom,,$uname,$uhome,
5496: 'Authentication changed by '.$env{'user.domain'}.', '.
5497: $env{'user.name'}.', '.$umode.
5498: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
5499: unless ($reply eq 'ok') {
5500: &logthis('Authentication mode error: '.$reply);
5501: return 'error: '.$reply;
5502: }
5503: return 'ok';
5504: }
5505:
5506: # --------------------------------------------------------------- Modify a user
5507:
5508: sub modifyuser {
5509: my ($udom, $uname, $uid,
5510: $umode, $upass, $first,
5511: $middle, $last, $gene,
5512: $forceid, $desiredhome, $email)=@_;
5513: $udom= &LONCAPA::clean_domain($udom);
5514: $uname=&LONCAPA::clean_username($uname);
5515: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
5516: $umode.', '.$first.', '.$middle.', '.
5517: $last.', '.$gene.'(forceid: '.$forceid.')'.
5518: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
5519: ' desiredhome not specified').
5520: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
5521: ' in domain '.$env{'request.role.domain'});
5522: my $uhome=&homeserver($uname,$udom,'true');
5523: # ----------------------------------------------------------------- Create User
5524: if (($uhome eq 'no_host') &&
5525: (($umode && $upass) || ($umode eq 'localauth'))) {
5526: my $unhome='';
5527: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
5528: $unhome = $desiredhome;
5529: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
5530: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
5531: } else { # load balancing routine for determining $unhome
5532: my $loadm=10000000;
5533: my %servers = &get_servers($udom,'library');
5534: foreach my $tryserver (keys(%servers)) {
5535: my $answer=reply('load',$tryserver);
5536: if (($answer=~/\d+/) && ($answer<$loadm)) {
5537: $loadm=$answer;
5538: $unhome=$tryserver;
5539: }
5540: }
5541: }
5542: if (($unhome eq '') || ($unhome eq 'no_host')) {
5543: return 'error: unable to find a home server for '.$uname.
5544: ' in domain '.$udom;
5545: }
5546: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
5547: &escape($upass),$unhome);
5548: unless ($reply eq 'ok') {
5549: return 'error: '.$reply;
5550: }
5551: $uhome=&homeserver($uname,$udom,'true');
5552: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
5553: return 'error: unable verify users home machine.';
5554: }
5555: } # End of creation of new user
5556: # ---------------------------------------------------------------------- Add ID
5557: if ($uid) {
5558: $uid=~tr/A-Z/a-z/;
5559: my %uidhash=&idrget($udom,$uname);
5560: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
5561: && (!$forceid)) {
5562: unless ($uid eq $uidhash{$uname}) {
5563: return 'error: user id "'.$uid.'" does not match '.
5564: 'current user id "'.$uidhash{$uname}.'".';
5565: }
5566: } else {
5567: &idput($udom,($uname => $uid));
5568: }
5569: }
5570: # -------------------------------------------------------------- Add names, etc
5571: my @tmp=&get('environment',
5572: ['firstname','middlename','lastname','generation','id',
5573: 'permanentemail'],
5574: $udom,$uname);
5575: my %names;
5576: if ($tmp[0] =~ m/^error:.*/) {
5577: %names=();
5578: } else {
5579: %names = @tmp;
5580: }
5581: #
5582: # Make sure to not trash student environment if instructor does not bother
5583: # to supply name and email information
5584: #
5585: if ($first) { $names{'firstname'} = $first; }
5586: if (defined($middle)) { $names{'middlename'} = $middle; }
5587: if ($last) { $names{'lastname'} = $last; }
5588: if (defined($gene)) { $names{'generation'} = $gene; }
5589: if ($email) {
5590: $email=~s/[^\w\@\.\-\,]//gs;
5591: if ($email=~/\@/) { $names{'notification'} = $email;
5592: $names{'critnotification'} = $email;
5593: $names{'permanentemail'} = $email; }
5594: }
5595: if ($uid) { $names{'id'} = $uid; }
5596: my $reply = &put('environment', \%names, $udom,$uname);
5597: if ($reply ne 'ok') { return 'error: '.$reply; }
5598: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
5599: &devalidate_cache_new('namescache',$uname.':'.$udom);
5600: &logthis('Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
5601: $umode.', '.$first.', '.$middle.', '.
5602: $last.', '.$gene.' by '.
5603: $env{'user.name'}.' at '.$env{'user.domain'});
5604: return 'ok';
5605: }
5606:
5607: # -------------------------------------------------------------- Modify student
5608:
5609: sub modifystudent {
5610: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
5611: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
5612: $selfenroll,$context)=@_;
5613: if (!$cid) {
5614: unless ($cid=$env{'request.course.id'}) {
5615: return 'not_in_class';
5616: }
5617: }
5618: # --------------------------------------------------------------- Make the user
5619: my $reply=&modifyuser
5620: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
5621: $desiredhome,$email);
5622: unless ($reply eq 'ok') { return $reply; }
5623: # This will cause &modify_student_enrollment to get the uid from the
5624: # students environment
5625: $uid = undef if (!$forceid);
5626: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
5627: $gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context);
5628: return $reply;
5629: }
5630:
5631: sub modify_student_enrollment {
5632: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context) = @_;
5633: my ($cdom,$cnum,$chome);
5634: if (!$cid) {
5635: unless ($cid=$env{'request.course.id'}) {
5636: return 'not_in_class';
5637: }
5638: $cdom=$env{'course.'.$cid.'.domain'};
5639: $cnum=$env{'course.'.$cid.'.num'};
5640: } else {
5641: ($cdom,$cnum)=split(/_/,$cid);
5642: }
5643: $chome=$env{'course.'.$cid.'.home'};
5644: if (!$chome) {
5645: $chome=&homeserver($cnum,$cdom);
5646: }
5647: if (!$chome) { return 'unknown_course'; }
5648: # Make sure the user exists
5649: my $uhome=&homeserver($uname,$udom);
5650: if (($uhome eq '') || ($uhome eq 'no_host')) {
5651: return 'error: no such user';
5652: }
5653: # Get student data if we were not given enough information
5654: if (!defined($first) || $first eq '' ||
5655: !defined($last) || $last eq '' ||
5656: !defined($uid) || $uid eq '' ||
5657: !defined($middle) || $middle eq '' ||
5658: !defined($gene) || $gene eq '') {
5659: # They did not supply us with enough data to enroll the student, so
5660: # we need to pick up more information.
5661: my %tmp = &get('environment',
5662: ['firstname','middlename','lastname', 'generation','id']
5663: ,$udom,$uname);
5664:
5665: #foreach my $key (keys(%tmp)) {
5666: # &logthis("key $key = ".$tmp{$key});
5667: #}
5668: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
5669: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
5670: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
5671: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
5672: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
5673: }
5674: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
5675: my $reply=cput('classlist',
5676: {"$uname:$udom" =>
5677: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
5678: $cdom,$cnum);
5679: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
5680: return 'error: '.$reply;
5681: } else {
5682: &devalidate_getsection_cache($udom,$uname,$cid);
5683: }
5684: # Add student role to user
5685: my $uurl='/'.$cid;
5686: $uurl=~s/\_/\//g;
5687: if ($usec) {
5688: $uurl.='/'.$usec;
5689: }
5690: return &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,$selfenroll,$context);
5691: }
5692:
5693: sub format_name {
5694: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
5695: my $name;
5696: if ($first ne 'lastname') {
5697: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
5698: } else {
5699: if ($lastname=~/\S/) {
5700: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
5701: $name=~s/\s+,/,/;
5702: } else {
5703: $name.= $firstname.' '.$middlename.' '.$generation;
5704: }
5705: }
5706: $name=~s/^\s+//;
5707: $name=~s/\s+$//;
5708: $name=~s/\s+/ /g;
5709: return $name;
5710: }
5711:
5712: # ------------------------------------------------- Write to course preferences
5713:
5714: sub writecoursepref {
5715: my ($courseid,%prefs)=@_;
5716: $courseid=~s/^\///;
5717: $courseid=~s/\_/\//g;
5718: my ($cdomain,$cnum)=split(/\//,$courseid);
5719: my $chome=homeserver($cnum,$cdomain);
5720: if (($chome eq '') || ($chome eq 'no_host')) {
5721: return 'error: no such course';
5722: }
5723: my $cstring='';
5724: foreach my $pref (keys(%prefs)) {
5725: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
5726: }
5727: $cstring=~s/\&$//;
5728: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
5729: }
5730:
5731: # ---------------------------------------------------------- Make/modify course
5732:
5733: sub createcourse {
5734: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
5735: $course_owner,$crstype)=@_;
5736: $url=&declutter($url);
5737: my $cid='';
5738: unless (&allowed('ccc',$udom)) {
5739: return 'refused';
5740: }
5741: # ------------------------------------------------------------------- Create ID
5742: my $uname=int(1+rand(9)).
5743: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
5744: substr($$.time,0,5).unpack("H8",pack("I32",time)).
5745: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
5746: # ----------------------------------------------- Make sure that does not exist
5747: my $uhome=&homeserver($uname,$udom,'true');
5748: unless (($uhome eq '') || ($uhome eq 'no_host')) {
5749: $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
5750: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
5751: $uhome=&homeserver($uname,$udom,'true');
5752: unless (($uhome eq '') || ($uhome eq 'no_host')) {
5753: return 'error: unable to generate unique course-ID';
5754: }
5755: }
5756: # ------------------------------------------------ Check supplied server name
5757: $course_server = $env{'user.homeserver'} if (! defined($course_server));
5758: if (! &is_library($course_server)) {
5759: return 'error:bad server name '.$course_server;
5760: }
5761: # ------------------------------------------------------------- Make the course
5762: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
5763: $course_server);
5764: unless ($reply eq 'ok') { return 'error: '.$reply; }
5765: $uhome=&homeserver($uname,$udom,'true');
5766: if (($uhome eq '') || ($uhome eq 'no_host')) {
5767: return 'error: no such course';
5768: }
5769: # ----------------------------------------------------------------- Course made
5770: # log existence
5771: my $newcourse = {
5772: $udom.'_'.$uname => {
5773: description => $description,
5774: inst_code => $inst_code,
5775: owner => $course_owner,
5776: type => $crstype,
5777: },
5778: };
5779: &courseidput($udom,$newcourse,$uhome,'notime');
5780: # set toplevel url
5781: my $topurl=$url;
5782: unless ($nonstandard) {
5783: # ------------------------------------------ For standard courses, make top url
5784: my $mapurl=&clutter($url);
5785: if ($mapurl eq '/res/') { $mapurl=''; }
5786: $env{'form.initmap'}=(<<ENDINITMAP);
5787: <map>
5788: <resource id="1" type="start"></resource>
5789: <resource id="2" src="$mapurl"></resource>
5790: <resource id="3" type="finish"></resource>
5791: <link index="1" from="1" to="2"></link>
5792: <link index="2" from="2" to="3"></link>
5793: </map>
5794: ENDINITMAP
5795: $topurl=&declutter(
5796: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
5797: );
5798: }
5799: # ----------------------------------------------------------- Write preferences
5800: &writecoursepref($udom.'_'.$uname,
5801: ('description' => $description,
5802: 'url' => $topurl));
5803: return '/'.$udom.'/'.$uname;
5804: }
5805:
5806: sub is_course {
5807: my ($cdom,$cnum) = @_;
5808: my %courses = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,
5809: undef,'.');
5810: if (exists($courses{$cdom.'_'.$cnum})) {
5811: return 1;
5812: }
5813: return 0;
5814: }
5815:
5816: # ---------------------------------------------------------- Assign Custom Role
5817:
5818: sub assigncustomrole {
5819: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
5820: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
5821: $end,$start,$deleteflag,$selfenroll,$context);
5822: }
5823:
5824: # ----------------------------------------------------------------- Revoke Role
5825:
5826: sub revokerole {
5827: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
5828: my $now=time;
5829: return &assignrole($udom,$uname,$url,$role,$now,$deleteflag,$selfenroll,$context);
5830: }
5831:
5832: # ---------------------------------------------------------- Revoke Custom Role
5833:
5834: sub revokecustomrole {
5835: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
5836: my $now=time;
5837: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
5838: $deleteflag,$selfenroll,$context);
5839: }
5840:
5841: # ------------------------------------------------------------ Disk usage
5842: sub diskusage {
5843: my ($udom,$uname,$directorypath,$getpropath)=@_;
5844: $directorypath =~ s/\/$//;
5845: my $listing=&reply('du2:'.&escape($directorypath).':'
5846: .&escape($getpropath).':'.&escape($uname).':'
5847: .&escape($udom),homeserver($uname,$udom));
5848: if ($listing eq 'unknown_cmd') {
5849: if ($getpropath) {
5850: $directorypath = &propath($udom,$uname).'/'.$directorypath;
5851: }
5852: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
5853: }
5854: return $listing;
5855: }
5856:
5857: sub is_locked {
5858: my ($file_name, $domain, $user) = @_;
5859: my @check;
5860: my $is_locked;
5861: push @check, $file_name;
5862: my %locked = &get('file_permissions',\@check,
5863: $env{'user.domain'},$env{'user.name'});
5864: my ($tmp)=keys(%locked);
5865: if ($tmp=~/^error:/) { undef(%locked); }
5866:
5867: if (ref($locked{$file_name}) eq 'ARRAY') {
5868: $is_locked = 'false';
5869: foreach my $entry (@{$locked{$file_name}}) {
5870: if (ref($entry) eq 'ARRAY') {
5871: $is_locked = 'true';
5872: last;
5873: }
5874: }
5875: } else {
5876: $is_locked = 'false';
5877: }
5878: }
5879:
5880: sub declutter_portfile {
5881: my ($file) = @_;
5882: $file =~ s{^(/portfolio/|portfolio/)}{/};
5883: return $file;
5884: }
5885:
5886: # ------------------------------------------------------------- Mark as Read Only
5887:
5888: sub mark_as_readonly {
5889: my ($domain,$user,$files,$what) = @_;
5890: my %current_permissions = &dump('file_permissions',$domain,$user);
5891: my ($tmp)=keys(%current_permissions);
5892: if ($tmp=~/^error:/) { undef(%current_permissions); }
5893: foreach my $file (@{$files}) {
5894: $file = &declutter_portfile($file);
5895: push(@{$current_permissions{$file}},$what);
5896: }
5897: &put('file_permissions',\%current_permissions,$domain,$user);
5898: return;
5899: }
5900:
5901: # ------------------------------------------------------------Save Selected Files
5902:
5903: sub save_selected_files {
5904: my ($user, $path, @files) = @_;
5905: my $filename = $user."savedfiles";
5906: my @other_files = &files_not_in_path($user, $path);
5907: open (OUT, '>'.$tmpdir.$filename);
5908: foreach my $file (@files) {
5909: print (OUT $env{'form.currentpath'}.$file."\n");
5910: }
5911: foreach my $file (@other_files) {
5912: print (OUT $file."\n");
5913: }
5914: close (OUT);
5915: return 'ok';
5916: }
5917:
5918: sub clear_selected_files {
5919: my ($user) = @_;
5920: my $filename = $user."savedfiles";
5921: open (OUT, '>'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
5922: print (OUT undef);
5923: close (OUT);
5924: return ("ok");
5925: }
5926:
5927: sub files_in_path {
5928: my ($user, $path) = @_;
5929: my $filename = $user."savedfiles";
5930: my %return_files;
5931: open (IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
5932: while (my $line_in = <IN>) {
5933: chomp ($line_in);
5934: my @paths_and_file = split (m!/!, $line_in);
5935: my $file_part = pop (@paths_and_file);
5936: my $path_part = join ('/', @paths_and_file);
5937: $path_part.='/';
5938: my $path_and_file = $path_part.$file_part;
5939: if ($path_part eq $path) {
5940: $return_files{$file_part}= 'selected';
5941: }
5942: }
5943: close (IN);
5944: return (\%return_files);
5945: }
5946:
5947: # called in portfolio select mode, to show files selected NOT in current directory
5948: sub files_not_in_path {
5949: my ($user, $path) = @_;
5950: my $filename = $user."savedfiles";
5951: my @return_files;
5952: my $path_part;
5953: open(IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
5954: while (my $line = <IN>) {
5955: #ok, I know it's clunky, but I want it to work
5956: my @paths_and_file = split(m|/|, $line);
5957: my $file_part = pop(@paths_and_file);
5958: chomp($file_part);
5959: my $path_part = join('/', @paths_and_file);
5960: $path_part .= '/';
5961: my $path_and_file = $path_part.$file_part;
5962: if ($path_part ne $path) {
5963: push(@return_files, ($path_and_file));
5964: }
5965: }
5966: close(OUT);
5967: return (@return_files);
5968: }
5969:
5970: #----------------------------------------------Get portfolio file permissions
5971:
5972: sub get_portfile_permissions {
5973: my ($domain,$user) = @_;
5974: my %current_permissions = &dump('file_permissions',$domain,$user);
5975: my ($tmp)=keys(%current_permissions);
5976: if ($tmp=~/^error:/) { undef(%current_permissions); }
5977: return \%current_permissions;
5978: }
5979:
5980: #---------------------------------------------Get portfolio file access controls
5981:
5982: sub get_access_controls {
5983: my ($current_permissions,$group,$file) = @_;
5984: my %access;
5985: my $real_file = $file;
5986: $file =~ s/\.meta$//;
5987: if (defined($file)) {
5988: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
5989: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
5990: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
5991: }
5992: }
5993: } else {
5994: foreach my $key (keys(%{$current_permissions})) {
5995: if ($key =~ /\0accesscontrol$/) {
5996: if (defined($group)) {
5997: if ($key !~ m-^\Q$group\E/-) {
5998: next;
5999: }
6000: }
6001: my ($fullpath) = split(/\0/,$key);
6002: if (ref($$current_permissions{$key}) eq 'HASH') {
6003: foreach my $control (keys(%{$$current_permissions{$key}})) {
6004: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
6005: }
6006: }
6007: }
6008: }
6009: }
6010: return %access;
6011: }
6012:
6013: sub modify_access_controls {
6014: my ($file_name,$changes,$domain,$user)=@_;
6015: my ($outcome,$deloutcome);
6016: my %store_permissions;
6017: my %new_values;
6018: my %new_control;
6019: my %translation;
6020: my @deletions = ();
6021: my $now = time;
6022: if (exists($$changes{'activate'})) {
6023: if (ref($$changes{'activate'}) eq 'HASH') {
6024: my @newitems = sort(keys(%{$$changes{'activate'}}));
6025: my $numnew = scalar(@newitems);
6026: for (my $i=0; $i<$numnew; $i++) {
6027: my $newkey = $newitems[$i];
6028: my $newid = &Apache::loncommon::get_cgi_id();
6029: if ($newkey =~ /^\d+:/) {
6030: $newkey =~ s/^(\d+)/$newid/;
6031: $translation{$1} = $newid;
6032: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
6033: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
6034: $translation{$1} = $newid;
6035: }
6036: $new_values{$file_name."\0".$newkey} =
6037: $$changes{'activate'}{$newitems[$i]};
6038: $new_control{$newkey} = $now;
6039: }
6040: }
6041: }
6042: my %todelete;
6043: my %changed_items;
6044: foreach my $action ('delete','update') {
6045: if (exists($$changes{$action})) {
6046: if (ref($$changes{$action}) eq 'HASH') {
6047: foreach my $key (keys(%{$$changes{$action}})) {
6048: my ($itemnum) = ($key =~ /^([^:]+):/);
6049: if ($action eq 'delete') {
6050: $todelete{$itemnum} = 1;
6051: } else {
6052: $changed_items{$itemnum} = $key;
6053: }
6054: }
6055: }
6056: }
6057: }
6058: # get lock on access controls for file.
6059: my $lockhash = {
6060: $file_name."\0".'locked_access_records' => $env{'user.name'}.
6061: ':'.$env{'user.domain'},
6062: };
6063: my $tries = 0;
6064: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
6065:
6066: while (($gotlock ne 'ok') && $tries <3) {
6067: $tries ++;
6068: sleep 1;
6069: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
6070: }
6071: if ($gotlock eq 'ok') {
6072: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
6073: my ($tmp)=keys(%curr_permissions);
6074: if ($tmp=~/^error:/) { undef(%curr_permissions); }
6075: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
6076: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
6077: if (ref($curr_controls) eq 'HASH') {
6078: foreach my $control_item (keys(%{$curr_controls})) {
6079: my ($itemnum) = ($control_item =~ /^([^:]+):/);
6080: if (defined($todelete{$itemnum})) {
6081: push(@deletions,$file_name."\0".$control_item);
6082: } else {
6083: if (defined($changed_items{$itemnum})) {
6084: $new_control{$changed_items{$itemnum}} = $now;
6085: push(@deletions,$file_name."\0".$control_item);
6086: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
6087: } else {
6088: $new_control{$control_item} = $$curr_controls{$control_item};
6089: }
6090: }
6091: }
6092: }
6093: }
6094: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
6095: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
6096: $outcome = &put('file_permissions',\%new_values,$domain,$user);
6097: # remove lock
6098: my @del_lock = ($file_name."\0".'locked_access_records');
6099: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
6100: my ($file,$group);
6101: if (&is_course($domain,$user)) {
6102: ($group,$file) = split(/\//,$file_name,2);
6103: } else {
6104: $file = $file_name;
6105: }
6106: my $sqlresult =
6107: &update_portfolio_table($user,$domain,$file,'portfolio_access',
6108: $group);
6109: } else {
6110: $outcome = "error: could not obtain lockfile\n";
6111: }
6112: return ($outcome,$deloutcome,\%new_values,\%translation);
6113: }
6114:
6115: sub make_public_indefinitely {
6116: my ($requrl) = @_;
6117: my $now = time;
6118: my $action = 'activate';
6119: my $aclnum = 0;
6120: if (&is_portfolio_url($requrl)) {
6121: my (undef,$udom,$unum,$file_name,$group) =
6122: &parse_portfolio_url($requrl);
6123: my $current_perms = &get_portfile_permissions($udom,$unum);
6124: my %access_controls = &get_access_controls($current_perms,
6125: $group,$file_name);
6126: foreach my $key (keys(%{$access_controls{$file_name}})) {
6127: my ($num,$scope,$end,$start) =
6128: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
6129: if ($scope eq 'public') {
6130: if ($start <= $now && $end == 0) {
6131: $action = 'none';
6132: } else {
6133: $action = 'update';
6134: $aclnum = $num;
6135: }
6136: last;
6137: }
6138: }
6139: if ($action eq 'none') {
6140: return 'ok';
6141: } else {
6142: my %changes;
6143: my $newend = 0;
6144: my $newstart = $now;
6145: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
6146: $changes{$action}{$newkey} = {
6147: type => 'public',
6148: time => {
6149: start => $newstart,
6150: end => $newend,
6151: },
6152: };
6153: my ($outcome,$deloutcome,$new_values,$translation) =
6154: &modify_access_controls($file_name,\%changes,$udom,$unum);
6155: return $outcome;
6156: }
6157: } else {
6158: return 'invalid';
6159: }
6160: }
6161:
6162: #------------------------------------------------------Get Marked as Read Only
6163:
6164: sub get_marked_as_readonly {
6165: my ($domain,$user,$what,$group) = @_;
6166: my $current_permissions = &get_portfile_permissions($domain,$user);
6167: my @readonly_files;
6168: my $cmp1=$what;
6169: if (ref($what)) { $cmp1=join('',@{$what}) };
6170: while (my ($file_name,$value) = each(%{$current_permissions})) {
6171: if (defined($group)) {
6172: if ($file_name !~ m-^\Q$group\E/-) {
6173: next;
6174: }
6175: }
6176: if (ref($value) eq "ARRAY"){
6177: foreach my $stored_what (@{$value}) {
6178: my $cmp2=$stored_what;
6179: if (ref($stored_what) eq 'ARRAY') {
6180: $cmp2=join('',@{$stored_what});
6181: }
6182: if ($cmp1 eq $cmp2) {
6183: push(@readonly_files, $file_name);
6184: last;
6185: } elsif (!defined($what)) {
6186: push(@readonly_files, $file_name);
6187: last;
6188: }
6189: }
6190: }
6191: }
6192: return @readonly_files;
6193: }
6194: #-----------------------------------------------------------Get Marked as Read Only Hash
6195:
6196: sub get_marked_as_readonly_hash {
6197: my ($current_permissions,$group,$what) = @_;
6198: my %readonly_files;
6199: while (my ($file_name,$value) = each(%{$current_permissions})) {
6200: if (defined($group)) {
6201: if ($file_name !~ m-^\Q$group\E/-) {
6202: next;
6203: }
6204: }
6205: if (ref($value) eq "ARRAY"){
6206: foreach my $stored_what (@{$value}) {
6207: if (ref($stored_what) eq 'ARRAY') {
6208: foreach my $lock_descriptor(@{$stored_what}) {
6209: if ($lock_descriptor eq 'graded') {
6210: $readonly_files{$file_name} = 'graded';
6211: } elsif ($lock_descriptor eq 'handback') {
6212: $readonly_files{$file_name} = 'handback';
6213: } else {
6214: if (!exists($readonly_files{$file_name})) {
6215: $readonly_files{$file_name} = 'locked';
6216: }
6217: }
6218: }
6219: }
6220: }
6221: }
6222: }
6223: return %readonly_files;
6224: }
6225: # ------------------------------------------------------------ Unmark as Read Only
6226:
6227: sub unmark_as_readonly {
6228: # unmarks $file_name (if $file_name is defined), or all files locked by $what
6229: # for portfolio submissions, $what contains [$symb,$crsid]
6230: my ($domain,$user,$what,$file_name,$group) = @_;
6231: $file_name = &declutter_portfile($file_name);
6232: my $symb_crs = $what;
6233: if (ref($what)) { $symb_crs=join('',@$what); }
6234: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
6235: my ($tmp)=keys(%current_permissions);
6236: if ($tmp=~/^error:/) { undef(%current_permissions); }
6237: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
6238: foreach my $file (@readonly_files) {
6239: my $clean_file = &declutter_portfile($file);
6240: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
6241: my $current_locks = $current_permissions{$file};
6242: my @new_locks;
6243: my @del_keys;
6244: if (ref($current_locks) eq "ARRAY"){
6245: foreach my $locker (@{$current_locks}) {
6246: my $compare=$locker;
6247: if (ref($locker) eq 'ARRAY') {
6248: $compare=join('',@{$locker});
6249: if ($compare ne $symb_crs) {
6250: push(@new_locks, $locker);
6251: }
6252: }
6253: }
6254: if (scalar(@new_locks) > 0) {
6255: $current_permissions{$file} = \@new_locks;
6256: } else {
6257: push(@del_keys, $file);
6258: &del('file_permissions',\@del_keys, $domain, $user);
6259: delete($current_permissions{$file});
6260: }
6261: }
6262: }
6263: &put('file_permissions',\%current_permissions,$domain,$user);
6264: return;
6265: }
6266:
6267: # ------------------------------------------------------------ Directory lister
6268:
6269: sub dirlist {
6270: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
6271: $uri=~s/^\///;
6272: $uri=~s/\/$//;
6273: my ($udom, $uname);
6274: if ($getuserdir) {
6275: $udom = $userdomain;
6276: $uname = $username;
6277: } else {
6278: (undef,$udom,$uname)=split(/\//,$uri);
6279: if(defined($userdomain)) {
6280: $udom = $userdomain;
6281: }
6282: if(defined($username)) {
6283: $uname = $username;
6284: }
6285: }
6286: my ($dirRoot,$listing,@listing_results);
6287:
6288: $dirRoot = $perlvar{'lonDocRoot'};
6289: if (defined($getpropath)) {
6290: $dirRoot = &propath($udom,$uname);
6291: $dirRoot =~ s/\/$//;
6292: } elsif (defined($getuserdir)) {
6293: my $subdir=$uname.'__';
6294: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
6295: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
6296: ."/$udom/$subdir/$uname";
6297: } elsif (defined($alternateRoot)) {
6298: $dirRoot = $alternateRoot;
6299: }
6300:
6301: if($udom) {
6302: if($uname) {
6303: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
6304: .$getuserdir.':'.&escape($dirRoot)
6305: .':'.&escape($uname).':'.&escape($udom),
6306: &homeserver($uname,$udom));
6307: if ($listing eq 'unknown_cmd') {
6308: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,
6309: &homeserver($uname,$udom));
6310: } else {
6311: @listing_results = map { &unescape($_); } split(/:/,$listing);
6312: }
6313: if ($listing eq 'unknown_cmd') {
6314: $listing = &reply('ls:'.$dirRoot.'/'.$uri,
6315: &homeserver($uname,$udom));
6316: @listing_results = split(/:/,$listing);
6317: } else {
6318: @listing_results = map { &unescape($_); } split(/:/,$listing);
6319: }
6320: return @listing_results;
6321: } elsif(!$alternateRoot) {
6322: my %allusers;
6323: my %servers = &get_servers($udom,'library');
6324: foreach my $tryserver (keys(%servers)) {
6325: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
6326: &escape($udom),$tryserver);
6327: if ($listing eq 'unknown_cmd') {
6328: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
6329: $udom, $tryserver);
6330: } else {
6331: @listing_results = map { &unescape($_); } split(/:/,$listing);
6332: }
6333: if ($listing eq 'unknown_cmd') {
6334: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
6335: $udom, $tryserver);
6336: @listing_results = split(/:/,$listing);
6337: } else {
6338: @listing_results =
6339: map { &unescape($_); } split(/:/,$listing);
6340: }
6341: if ($listing_results[0] ne 'no_such_dir' &&
6342: $listing_results[0] ne 'empty' &&
6343: $listing_results[0] ne 'con_lost') {
6344: foreach my $line (@listing_results) {
6345: my ($entry) = split(/&/,$line,2);
6346: $allusers{$entry} = 1;
6347: }
6348: }
6349: }
6350: my $alluserstr='';
6351: foreach my $user (sort(keys(%allusers))) {
6352: $alluserstr.=$user.'&user:';
6353: }
6354: $alluserstr=~s/:$//;
6355: return split(/:/,$alluserstr);
6356: } else {
6357: return ('missing user name');
6358: }
6359: } elsif(!defined($getpropath)) {
6360: my @all_domains = sort(&all_domains());
6361: foreach my $domain (@all_domains) {
6362: $domain = $perlvar{'lonDocRoot'}.'/res/'.$domain.'/&domain';
6363: }
6364: return @all_domains;
6365: } else {
6366: return ('missing domain');
6367: }
6368: }
6369:
6370: # --------------------------------------------- GetFileTimestamp
6371: # This function utilizes dirlist and returns the date stamp for
6372: # when it was last modified. It will also return an error of -1
6373: # if an error occurs
6374:
6375: sub GetFileTimestamp {
6376: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
6377: $studentDomain = &LONCAPA::clean_domain($studentDomain);
6378: $studentName = &LONCAPA::clean_username($studentName);
6379: my ($fileStat) =
6380: &Apache::lonnet::dirlist($filename,$studentDomain,$studentName,
6381: undef,$getuserdir);
6382: my @stats = split('&', $fileStat);
6383: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
6384: # @stats contains first the filename, then the stat output
6385: return $stats[10]; # so this is 10 instead of 9.
6386: } else {
6387: return -1;
6388: }
6389: }
6390:
6391: sub stat_file {
6392: my ($uri) = @_;
6393: $uri = &clutter_with_no_wrapper($uri);
6394:
6395: my ($udom,$uname,$file);
6396: if ($uri =~ m-^/(uploaded|editupload)/-) {
6397: ($udom,$uname,$file) =
6398: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
6399: $file = 'userfiles/'.$file;
6400: }
6401: if ($uri =~ m-^/res/-) {
6402: ($udom,$uname) =
6403: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
6404: $file = $uri;
6405: }
6406:
6407: if (!$udom || !$uname || !$file) {
6408: # unable to handle the uri
6409: return ();
6410: }
6411: my $getpropath;
6412: if ($file =~ /^userfiles\//) {
6413: $getpropath = 1;
6414: }
6415: my ($result) = &dirlist($file,$udom,$uname,$getpropath);
6416: my @stats = split('&', $result);
6417:
6418: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
6419: shift(@stats); #filename is first
6420: return @stats;
6421: }
6422: return ();
6423: }
6424:
6425: # -------------------------------------------------------- Value of a Condition
6426:
6427: # gets the value of a specific preevaluated condition
6428: # stored in the string $env{user.state.<cid>}
6429: # or looks up a condition reference in the bighash and if if hasn't
6430: # already been evaluated recurses into docondval to get the value of
6431: # the condition, then memoizing it to
6432: # $env{user.state.<cid>.<condition>}
6433: sub directcondval {
6434: my $number=shift;
6435: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
6436: &Apache::lonuserstate::evalstate();
6437: }
6438: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
6439: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
6440: } elsif ($number =~ /^_/) {
6441: my $sub_condition;
6442: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
6443: &GDBM_READER(),0640)) {
6444: $sub_condition=$bighash{'conditions'.$number};
6445: untie(%bighash);
6446: }
6447: my $value = &docondval($sub_condition);
6448: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
6449: return $value;
6450: }
6451: if ($env{'user.state.'.$env{'request.course.id'}}) {
6452: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
6453: } else {
6454: return 2;
6455: }
6456: }
6457:
6458: # get the collection of conditions for this resource
6459: sub condval {
6460: my $condidx=shift;
6461: my $allpathcond='';
6462: foreach my $cond (split(/\|/,$condidx)) {
6463: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
6464: $allpathcond.=
6465: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
6466: }
6467: }
6468: $allpathcond=~s/\|$//;
6469: return &docondval($allpathcond);
6470: }
6471:
6472: #evaluates an expression of conditions
6473: sub docondval {
6474: my ($allpathcond) = @_;
6475: my $result=0;
6476: if ($env{'request.course.id'}
6477: && defined($allpathcond)) {
6478: my $operand='|';
6479: my @stack;
6480: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
6481: if ($chunk eq '(') {
6482: push @stack,($operand,$result);
6483: } elsif ($chunk eq ')') {
6484: my $before=pop @stack;
6485: if (pop @stack eq '&') {
6486: $result=$result>$before?$before:$result;
6487: } else {
6488: $result=$result>$before?$result:$before;
6489: }
6490: } elsif (($chunk eq '&') || ($chunk eq '|')) {
6491: $operand=$chunk;
6492: } else {
6493: my $new=directcondval($chunk);
6494: if ($operand eq '&') {
6495: $result=$result>$new?$new:$result;
6496: } else {
6497: $result=$result>$new?$result:$new;
6498: }
6499: }
6500: }
6501: }
6502: return $result;
6503: }
6504:
6505: # ---------------------------------------------------- Devalidate courseresdata
6506:
6507: sub devalidatecourseresdata {
6508: my ($coursenum,$coursedomain)=@_;
6509: my $hashid=$coursenum.':'.$coursedomain;
6510: &devalidate_cache_new('courseres',$hashid);
6511: }
6512:
6513:
6514: # --------------------------------------------------- Course Resourcedata Query
6515: #
6516: # Parameters:
6517: # $coursenum - Number of the course.
6518: # $coursedomain - Domain at which the course was created.
6519: # Returns:
6520: # A hash of the course parameters along (I think) with timestamps
6521: # and version info.
6522:
6523: sub get_courseresdata {
6524: my ($coursenum,$coursedomain)=@_;
6525: my $coursehom=&homeserver($coursenum,$coursedomain);
6526: my $hashid=$coursenum.':'.$coursedomain;
6527: my ($result,$cached)=&is_cached_new('courseres',$hashid);
6528: my %dumpreply;
6529: unless (defined($cached)) {
6530: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
6531: $result=\%dumpreply;
6532: my ($tmp) = keys(%dumpreply);
6533: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
6534: &do_cache_new('courseres',$hashid,$result,600);
6535: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
6536: return $tmp;
6537: } elsif ($tmp =~ /^(error)/) {
6538: $result=undef;
6539: &do_cache_new('courseres',$hashid,$result,600);
6540: }
6541: }
6542: return $result;
6543: }
6544:
6545: sub devalidateuserresdata {
6546: my ($uname,$udom)=@_;
6547: my $hashid="$udom:$uname";
6548: &devalidate_cache_new('userres',$hashid);
6549: }
6550:
6551: sub get_userresdata {
6552: my ($uname,$udom)=@_;
6553: #most student don\'t have any data set, check if there is some data
6554: if (&EXT_cache_status($udom,$uname)) { return undef; }
6555:
6556: my $hashid="$udom:$uname";
6557: my ($result,$cached)=&is_cached_new('userres',$hashid);
6558: if (!defined($cached)) {
6559: my %resourcedata=&dump('resourcedata',$udom,$uname);
6560: $result=\%resourcedata;
6561: &do_cache_new('userres',$hashid,$result,600);
6562: }
6563: my ($tmp)=keys(%$result);
6564: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
6565: return $result;
6566: }
6567: #error 2 occurs when the .db doesn't exist
6568: if ($tmp!~/error: 2 /) {
6569: &logthis("<font color=\"blue\">WARNING:".
6570: " Trying to get resource data for ".
6571: $uname." at ".$udom.": ".
6572: $tmp."</font>");
6573: } elsif ($tmp=~/error: 2 /) {
6574: #&EXT_cache_set($udom,$uname);
6575: &do_cache_new('userres',$hashid,undef,600);
6576: undef($tmp); # not really an error so don't send it back
6577: }
6578: return $tmp;
6579: }
6580: #----------------------------------------------- resdata - return resource data
6581: # Purpose:
6582: # Return resource data for either users or for a course.
6583: # Parameters:
6584: # $name - Course/user name.
6585: # $domain - Name of the domain the user/course is registered on.
6586: # $type - Type of thing $name is (must be 'course' or 'user'
6587: # @which - Array of names of resources desired.
6588: # Returns:
6589: # The value of the first reasource in @which that is found in the
6590: # resource hash.
6591: # Exceptional Conditions:
6592: # If the $type passed in is not valid (not the string 'course' or
6593: # 'user', an undefined reference is returned.
6594: # If none of the resources are found, an undef is returned
6595: sub resdata {
6596: my ($name,$domain,$type,@which)=@_;
6597: my $result;
6598: if ($type eq 'course') {
6599: $result=&get_courseresdata($name,$domain);
6600: } elsif ($type eq 'user') {
6601: $result=&get_userresdata($name,$domain);
6602: }
6603: if (!ref($result)) { return $result; }
6604: foreach my $item (@which) {
6605: if (defined($result->{$item->[0]})) {
6606: return [$result->{$item->[0]},$item->[1]];
6607: }
6608: }
6609: return undef;
6610: }
6611:
6612: #
6613: # EXT resource caching routines
6614: #
6615:
6616: sub clear_EXT_cache_status {
6617: &delenv('cache.EXT.');
6618: }
6619:
6620: sub EXT_cache_status {
6621: my ($target_domain,$target_user) = @_;
6622: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
6623: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
6624: # We know already the user has no data
6625: return 1;
6626: } else {
6627: return 0;
6628: }
6629: }
6630:
6631: sub EXT_cache_set {
6632: my ($target_domain,$target_user) = @_;
6633: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
6634: #&appenv({$cachename => time});
6635: }
6636:
6637: # --------------------------------------------------------- Value of a Variable
6638: sub EXT {
6639:
6640: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
6641: unless ($varname) { return ''; }
6642: #get real user name/domain, courseid and symb
6643: my $courseid;
6644: my $publicuser;
6645: if ($symbparm) {
6646: $symbparm=&get_symb_from_alias($symbparm);
6647: }
6648: if (!($uname && $udom)) {
6649: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
6650: if (!$symbparm) { $symbparm=$cursymb; }
6651: } else {
6652: $courseid=$env{'request.course.id'};
6653: }
6654: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
6655: my $rest;
6656: if (defined($therest[0])) {
6657: $rest=join('.',@therest);
6658: } else {
6659: $rest='';
6660: }
6661:
6662: my $qualifierrest=$qualifier;
6663: if ($rest) { $qualifierrest.='.'.$rest; }
6664: my $spacequalifierrest=$space;
6665: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
6666: if ($realm eq 'user') {
6667: # --------------------------------------------------------------- user.resource
6668: if ($space eq 'resource') {
6669: if ( (defined($Apache::lonhomework::parsing_a_problem)
6670: || defined($Apache::lonhomework::parsing_a_task))
6671: &&
6672: ($symbparm eq &symbread()) ) {
6673: # if we are in the middle of processing the resource the
6674: # get the value we are planning on committing
6675: if (defined($Apache::lonhomework::results{$qualifierrest})) {
6676: return $Apache::lonhomework::results{$qualifierrest};
6677: } else {
6678: return $Apache::lonhomework::history{$qualifierrest};
6679: }
6680: } else {
6681: my %restored;
6682: if ($publicuser || $env{'request.state'} eq 'construct') {
6683: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
6684: } else {
6685: %restored=&restore($symbparm,$courseid,$udom,$uname);
6686: }
6687: return $restored{$qualifierrest};
6688: }
6689: # ----------------------------------------------------------------- user.access
6690: } elsif ($space eq 'access') {
6691: # FIXME - not supporting calls for a specific user
6692: return &allowed($qualifier,$rest);
6693: # ------------------------------------------ user.preferences, user.environment
6694: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
6695: if (($uname eq $env{'user.name'}) &&
6696: ($udom eq $env{'user.domain'})) {
6697: return $env{join('.',('environment',$qualifierrest))};
6698: } else {
6699: my %returnhash;
6700: if (!$publicuser) {
6701: %returnhash=&userenvironment($udom,$uname,
6702: $qualifierrest);
6703: }
6704: return $returnhash{$qualifierrest};
6705: }
6706: # ----------------------------------------------------------------- user.course
6707: } elsif ($space eq 'course') {
6708: # FIXME - not supporting calls for a specific user
6709: return $env{join('.',('request.course',$qualifier))};
6710: # ------------------------------------------------------------------- user.role
6711: } elsif ($space eq 'role') {
6712: # FIXME - not supporting calls for a specific user
6713: my ($role,$where)=split(/\./,$env{'request.role'});
6714: if ($qualifier eq 'value') {
6715: return $role;
6716: } elsif ($qualifier eq 'extent') {
6717: return $where;
6718: }
6719: # ----------------------------------------------------------------- user.domain
6720: } elsif ($space eq 'domain') {
6721: return $udom;
6722: # ------------------------------------------------------------------- user.name
6723: } elsif ($space eq 'name') {
6724: return $uname;
6725: # ---------------------------------------------------- Any other user namespace
6726: } else {
6727: my %reply;
6728: if (!$publicuser) {
6729: %reply=&get($space,[$qualifierrest],$udom,$uname);
6730: }
6731: return $reply{$qualifierrest};
6732: }
6733: } elsif ($realm eq 'query') {
6734: # ---------------------------------------------- pull stuff out of query string
6735: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
6736: [$spacequalifierrest]);
6737: return $env{'form.'.$spacequalifierrest};
6738: } elsif ($realm eq 'request') {
6739: # ------------------------------------------------------------- request.browser
6740: if ($space eq 'browser') {
6741: if ($qualifier eq 'textremote') {
6742: if (&Apache::lonlocal::mt('textual_remote_display') eq 'on') {
6743: return 1;
6744: } else {
6745: return 0;
6746: }
6747: } else {
6748: return $env{'browser.'.$qualifier};
6749: }
6750: # ------------------------------------------------------------ request.filename
6751: } else {
6752: return $env{'request.'.$spacequalifierrest};
6753: }
6754: } elsif ($realm eq 'course') {
6755: # ---------------------------------------------------------- course.description
6756: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
6757: } elsif ($realm eq 'resource') {
6758:
6759: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
6760: if (!$symbparm) { $symbparm=&symbread(); }
6761: }
6762:
6763: if ($space eq 'title') {
6764: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
6765: return &gettitle($symbparm);
6766: }
6767:
6768: if ($space eq 'map') {
6769: my ($map) = &decode_symb($symbparm);
6770: return &symbread($map);
6771: }
6772: if ($space eq 'filename') {
6773: if ($symbparm) {
6774: return &clutter((&decode_symb($symbparm))[2]);
6775: }
6776: return &hreflocation('',$env{'request.filename'});
6777: }
6778:
6779: my ($section, $group, @groups);
6780: my ($courselevelm,$courselevel);
6781: if ($symbparm && defined($courseid) &&
6782: $courseid eq $env{'request.course.id'}) {
6783:
6784: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
6785:
6786: # ----------------------------------------------------- Cascading lookup scheme
6787: my $symbp=$symbparm;
6788: my $mapp=&deversion((&decode_symb($symbp))[0]);
6789:
6790: my $symbparm=$symbp.'.'.$spacequalifierrest;
6791: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
6792:
6793: if (($env{'user.name'} eq $uname) &&
6794: ($env{'user.domain'} eq $udom)) {
6795: $section=$env{'request.course.sec'};
6796: @groups = split(/:/,$env{'request.course.groups'});
6797: @groups=&sort_course_groups($courseid,@groups);
6798: } else {
6799: if (! defined($usection)) {
6800: $section=&getsection($udom,$uname,$courseid);
6801: } else {
6802: $section = $usection;
6803: }
6804: @groups = &get_users_groups($udom,$uname,$courseid);
6805: }
6806:
6807: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
6808: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
6809: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
6810:
6811: $courselevel=$courseid.'.'.$spacequalifierrest;
6812: my $courselevelr=$courseid.'.'.$symbparm;
6813: $courselevelm=$courseid.'.'.$mapparm;
6814:
6815: # ----------------------------------------------------------- first, check user
6816:
6817: my $userreply=&resdata($uname,$udom,'user',
6818: ([$courselevelr,'resource'],
6819: [$courselevelm,'map' ],
6820: [$courselevel, 'course' ]));
6821: if (defined($userreply)) { return &get_reply($userreply); }
6822:
6823: # ------------------------------------------------ second, check some of course
6824: my $coursereply;
6825: if (@groups > 0) {
6826: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
6827: $mapparm,$spacequalifierrest);
6828: if (defined($coursereply)) { return &get_reply($coursereply); }
6829: }
6830:
6831: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
6832: $env{'course.'.$courseid.'.domain'},
6833: 'course',
6834: ([$seclevelr, 'resource'],
6835: [$seclevelm, 'map' ],
6836: [$seclevel, 'course' ],
6837: [$courselevelr,'resource']));
6838: if (defined($coursereply)) { return &get_reply($coursereply); }
6839:
6840: # ------------------------------------------------------ third, check map parms
6841: my %parmhash=();
6842: my $thisparm='';
6843: if (tie(%parmhash,'GDBM_File',
6844: $env{'request.course.fn'}.'_parms.db',
6845: &GDBM_READER(),0640)) {
6846: $thisparm=$parmhash{$symbparm};
6847: untie(%parmhash);
6848: }
6849: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
6850: }
6851: # ------------------------------------------ fourth, look in resource metadata
6852:
6853: $spacequalifierrest=~s/\./\_/;
6854: my $filename;
6855: if (!$symbparm) { $symbparm=&symbread(); }
6856: if ($symbparm) {
6857: $filename=(&decode_symb($symbparm))[2];
6858: } else {
6859: $filename=$env{'request.filename'};
6860: }
6861: my $metadata=&metadata($filename,$spacequalifierrest);
6862: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
6863: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
6864: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
6865:
6866: # ---------------------------------------------- fourth, look in rest of course
6867: if ($symbparm && defined($courseid) &&
6868: $courseid eq $env{'request.course.id'}) {
6869: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
6870: $env{'course.'.$courseid.'.domain'},
6871: 'course',
6872: ([$courselevelm,'map' ],
6873: [$courselevel, 'course']));
6874: if (defined($coursereply)) { return &get_reply($coursereply); }
6875: }
6876: # ------------------------------------------------------------------ Cascade up
6877: unless ($space eq '0') {
6878: my @parts=split(/_/,$space);
6879: my $id=pop(@parts);
6880: my $part=join('_',@parts);
6881: if ($part eq '') { $part='0'; }
6882: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
6883: $symbparm,$udom,$uname,$section,1);
6884: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
6885: }
6886: if ($recurse) { return undef; }
6887: my $pack_def=&packages_tab_default($filename,$varname);
6888: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
6889: # ---------------------------------------------------- Any other user namespace
6890: } elsif ($realm eq 'environment') {
6891: # ----------------------------------------------------------------- environment
6892: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
6893: return $env{'environment.'.$spacequalifierrest};
6894: } else {
6895: if ($uname eq 'anonymous' && $udom eq '') {
6896: return '';
6897: }
6898: my %returnhash=&userenvironment($udom,$uname,
6899: $spacequalifierrest);
6900: return $returnhash{$spacequalifierrest};
6901: }
6902: } elsif ($realm eq 'system') {
6903: # ----------------------------------------------------------------- system.time
6904: if ($space eq 'time') {
6905: return time;
6906: }
6907: } elsif ($realm eq 'server') {
6908: # ----------------------------------------------------------------- system.time
6909: if ($space eq 'name') {
6910: return $ENV{'SERVER_NAME'};
6911: }
6912: }
6913: return '';
6914: }
6915:
6916: sub get_reply {
6917: my ($reply_value) = @_;
6918: if (ref($reply_value) eq 'ARRAY') {
6919: if (wantarray) {
6920: return @$reply_value;
6921: }
6922: return $reply_value->[0];
6923: } else {
6924: return $reply_value;
6925: }
6926: }
6927:
6928: sub check_group_parms {
6929: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
6930: my @groupitems = ();
6931: my $resultitem;
6932: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
6933: foreach my $group (@{$groups}) {
6934: foreach my $level (@levels) {
6935: my $item = $courseid.'.['.$group.'].'.$level->[0];
6936: push(@groupitems,[$item,$level->[1]]);
6937: }
6938: }
6939: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
6940: $env{'course.'.$courseid.'.domain'},
6941: 'course',@groupitems);
6942: return $coursereply;
6943: }
6944:
6945: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
6946: my ($courseid,@groups) = @_;
6947: @groups = sort(@groups);
6948: return @groups;
6949: }
6950:
6951: sub packages_tab_default {
6952: my ($uri,$varname)=@_;
6953: my (undef,$part,$name)=split(/\./,$varname);
6954:
6955: my (@extension,@specifics,$do_default);
6956: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
6957: my ($pack_type,$pack_part)=split(/_/,$package,2);
6958: if ($pack_type eq 'default') {
6959: $do_default=1;
6960: } elsif ($pack_type eq 'extension') {
6961: push(@extension,[$package,$pack_type,$pack_part]);
6962: } elsif ($pack_part eq $part || $pack_type eq 'part') {
6963: # only look at packages defaults for packages that this id is
6964: push(@specifics,[$package,$pack_type,$pack_part]);
6965: }
6966: }
6967: # first look for a package that matches the requested part id
6968: foreach my $package (@specifics) {
6969: my (undef,$pack_type,$pack_part)=@{$package};
6970: next if ($pack_part ne $part);
6971: if (defined($packagetab{"$pack_type&$name&default"})) {
6972: return $packagetab{"$pack_type&$name&default"};
6973: }
6974: }
6975: # look for any possible matching non extension_ package
6976: foreach my $package (@specifics) {
6977: my (undef,$pack_type,$pack_part)=@{$package};
6978: if (defined($packagetab{"$pack_type&$name&default"})) {
6979: return $packagetab{"$pack_type&$name&default"};
6980: }
6981: if ($pack_type eq 'part') { $pack_part='0'; }
6982: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
6983: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
6984: }
6985: }
6986: # look for any posible extension_ match
6987: foreach my $package (@extension) {
6988: my ($package,$pack_type)=@{$package};
6989: if (defined($packagetab{"$pack_type&$name&default"})) {
6990: return $packagetab{"$pack_type&$name&default"};
6991: }
6992: if (defined($packagetab{$package."&$name&default"})) {
6993: return $packagetab{$package."&$name&default"};
6994: }
6995: }
6996: # look for a global default setting
6997: if ($do_default && defined($packagetab{"default&$name&default"})) {
6998: return $packagetab{"default&$name&default"};
6999: }
7000: return undef;
7001: }
7002:
7003: sub add_prefix_and_part {
7004: my ($prefix,$part)=@_;
7005: my $keyroot;
7006: if (defined($prefix) && $prefix !~ /^__/) {
7007: # prefix that has a part already
7008: $keyroot=$prefix;
7009: } elsif (defined($prefix)) {
7010: # prefix that is missing a part
7011: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
7012: } else {
7013: # no prefix at all
7014: if (defined($part)) { $keyroot='_'.$part; }
7015: }
7016: return $keyroot;
7017: }
7018:
7019: # ---------------------------------------------------------------- Get metadata
7020:
7021: my %metaentry;
7022: sub metadata {
7023: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
7024: $uri=&declutter($uri);
7025: # if it is a non metadata possible uri return quickly
7026: if (($uri eq '') ||
7027: (($uri =~ m|^/*adm/|) &&
7028: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
7029: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) ) {
7030: return undef;
7031: }
7032: if (($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/})
7033: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
7034: return undef;
7035: }
7036: my $filename=$uri;
7037: $uri=~s/\.meta$//;
7038: #
7039: # Is the metadata already cached?
7040: # Look at timestamp of caching
7041: # Everything is cached by the main uri, libraries are never directly cached
7042: #
7043: if (!defined($liburi)) {
7044: my ($result,$cached)=&is_cached_new('meta',$uri);
7045: if (defined($cached)) { return $result->{':'.$what}; }
7046: }
7047: {
7048: #
7049: # Is this a recursive call for a library?
7050: #
7051: # if (! exists($metacache{$uri})) {
7052: # $metacache{$uri}={};
7053: # }
7054: my $cachetime = 60*60;
7055: if ($liburi) {
7056: $liburi=&declutter($liburi);
7057: $filename=$liburi;
7058: } else {
7059: &devalidate_cache_new('meta',$uri);
7060: undef(%metaentry);
7061: }
7062: my %metathesekeys=();
7063: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
7064: my $metastring;
7065: if ($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/}) {
7066: my $which = &hreflocation('','/'.($liburi || $uri));
7067: $metastring =
7068: &Apache::lonnet::ssi_body($which,
7069: ('grade_target' => 'meta'));
7070: $cachetime = 1; # only want this cached in the child not long term
7071: } elsif ($uri !~ m -^(editupload)/-) {
7072: my $file=&filelocation('',&clutter($filename));
7073: #push(@{$metaentry{$uri.'.file'}},$file);
7074: $metastring=&getfile($file);
7075: }
7076: my $parser=HTML::LCParser->new(\$metastring);
7077: my $token;
7078: undef %metathesekeys;
7079: while ($token=$parser->get_token) {
7080: if ($token->[0] eq 'S') {
7081: if (defined($token->[2]->{'package'})) {
7082: #
7083: # This is a package - get package info
7084: #
7085: my $package=$token->[2]->{'package'};
7086: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
7087: if (defined($token->[2]->{'id'})) {
7088: $keyroot.='_'.$token->[2]->{'id'};
7089: }
7090: if ($metaentry{':packages'}) {
7091: $metaentry{':packages'}.=','.$package.$keyroot;
7092: } else {
7093: $metaentry{':packages'}=$package.$keyroot;
7094: }
7095: foreach my $pack_entry (keys(%packagetab)) {
7096: my $part=$keyroot;
7097: $part=~s/^\_//;
7098: if ($pack_entry=~/^\Q$package\E\&/ ||
7099: $pack_entry=~/^\Q$package\E_0\&/) {
7100: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
7101: # ignore package.tab specified default values
7102: # here &package_tab_default() will fetch those
7103: if ($subp eq 'default') { next; }
7104: my $value=$packagetab{$pack_entry};
7105: my $unikey;
7106: if ($pack =~ /_0$/) {
7107: $unikey='parameter_0_'.$name;
7108: $part=0;
7109: } else {
7110: $unikey='parameter'.$keyroot.'_'.$name;
7111: }
7112: if ($subp eq 'display') {
7113: $value.=' [Part: '.$part.']';
7114: }
7115: $metaentry{':'.$unikey.'.part'}=$part;
7116: $metathesekeys{$unikey}=1;
7117: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
7118: $metaentry{':'.$unikey.'.'.$subp}=$value;
7119: }
7120: if (defined($metaentry{':'.$unikey.'.default'})) {
7121: $metaentry{':'.$unikey}=
7122: $metaentry{':'.$unikey.'.default'};
7123: }
7124: }
7125: }
7126: } else {
7127: #
7128: # This is not a package - some other kind of start tag
7129: #
7130: my $entry=$token->[1];
7131: my $unikey;
7132: if ($entry eq 'import') {
7133: $unikey='';
7134: } else {
7135: $unikey=$entry;
7136: }
7137: $unikey.=&add_prefix_and_part($prefix,$token->[2]->{'part'});
7138:
7139: if (defined($token->[2]->{'id'})) {
7140: $unikey.='_'.$token->[2]->{'id'};
7141: }
7142:
7143: if ($entry eq 'import') {
7144: #
7145: # Importing a library here
7146: #
7147: if ($depthcount<20) {
7148: my $location=$parser->get_text('/import');
7149: my $dir=$filename;
7150: $dir=~s|[^/]*$||;
7151: $location=&filelocation($dir,$location);
7152: my $metadata =
7153: &metadata($uri,'keys', $location,$unikey,
7154: $depthcount+1);
7155: foreach my $meta (split(',',$metadata)) {
7156: $metaentry{':'.$meta}=$metaentry{':'.$meta};
7157: $metathesekeys{$meta}=1;
7158: }
7159: }
7160: } else {
7161:
7162: if (defined($token->[2]->{'name'})) {
7163: $unikey.='_'.$token->[2]->{'name'};
7164: }
7165: $metathesekeys{$unikey}=1;
7166: foreach my $param (@{$token->[3]}) {
7167: $metaentry{':'.$unikey.'.'.$param} =
7168: $token->[2]->{$param};
7169: }
7170: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
7171: my $default=$metaentry{':'.$unikey.'.default'};
7172: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
7173: # only ws inside the tag, and not in default, so use default
7174: # as value
7175: $metaentry{':'.$unikey}=$default;
7176: } elsif ( $internaltext =~ /\S/ ) {
7177: # something interesting inside the tag
7178: $metaentry{':'.$unikey}=$internaltext;
7179: } else {
7180: # no interesting values, don't set a default
7181: }
7182: # end of not-a-package not-a-library import
7183: }
7184: # end of not-a-package start tag
7185: }
7186: # the next is the end of "start tag"
7187: }
7188: }
7189: my ($extension) = ($uri =~ /\.(\w+)$/);
7190: $extension = lc($extension);
7191: if ($extension eq 'htm') { $extension='html'; }
7192:
7193: foreach my $key (keys(%packagetab)) {
7194: #no specific packages #how's our extension
7195: if ($key!~/^extension_\Q$extension\E&/) { next; }
7196: &metadata_create_package_def($uri,$key,'extension_'.$extension,
7197: \%metathesekeys);
7198: }
7199:
7200: if (!exists($metaentry{':packages'})
7201: || $packagetab{"import_defaults&extension_$extension"}) {
7202: foreach my $key (keys(%packagetab)) {
7203: #no specific packages well let's get default then
7204: if ($key!~/^default&/) { next; }
7205: &metadata_create_package_def($uri,$key,'default',
7206: \%metathesekeys);
7207: }
7208: }
7209: # are there custom rights to evaluate
7210: if ($metaentry{':copyright'} eq 'custom') {
7211:
7212: #
7213: # Importing a rights file here
7214: #
7215: unless ($depthcount) {
7216: my $location=$metaentry{':customdistributionfile'};
7217: my $dir=$filename;
7218: $dir=~s|[^/]*$||;
7219: $location=&filelocation($dir,$location);
7220: my $rights_metadata =
7221: &metadata($uri,'keys',$location,'_rights',
7222: $depthcount+1);
7223: foreach my $rights (split(',',$rights_metadata)) {
7224: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
7225: $metathesekeys{$rights}=1;
7226: }
7227: }
7228: }
7229: # uniqifiy package listing
7230: my %seen;
7231: my @uniq_packages =
7232: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
7233: $metaentry{':packages'} = join(',',@uniq_packages);
7234:
7235: $metaentry{':keys'} = join(',',keys(%metathesekeys));
7236: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
7237: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
7238: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
7239: # this is the end of "was not already recently cached
7240: }
7241: return $metaentry{':'.$what};
7242: }
7243:
7244: sub metadata_create_package_def {
7245: my ($uri,$key,$package,$metathesekeys)=@_;
7246: my ($pack,$name,$subp)=split(/\&/,$key);
7247: if ($subp eq 'default') { next; }
7248:
7249: if (defined($metaentry{':packages'})) {
7250: $metaentry{':packages'}.=','.$package;
7251: } else {
7252: $metaentry{':packages'}=$package;
7253: }
7254: my $value=$packagetab{$key};
7255: my $unikey;
7256: $unikey='parameter_0_'.$name;
7257: $metaentry{':'.$unikey.'.part'}=0;
7258: $$metathesekeys{$unikey}=1;
7259: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
7260: $metaentry{':'.$unikey.'.'.$subp}=$value;
7261: }
7262: if (defined($metaentry{':'.$unikey.'.default'})) {
7263: $metaentry{':'.$unikey}=
7264: $metaentry{':'.$unikey.'.default'};
7265: }
7266: }
7267:
7268: sub metadata_generate_part0 {
7269: my ($metadata,$metacache,$uri) = @_;
7270: my %allnames;
7271: foreach my $metakey (keys(%$metadata)) {
7272: if ($metakey=~/^parameter\_(.*)/) {
7273: my $part=$$metacache{':'.$metakey.'.part'};
7274: my $name=$$metacache{':'.$metakey.'.name'};
7275: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
7276: $allnames{$name}=$part;
7277: }
7278: }
7279: }
7280: foreach my $name (keys(%allnames)) {
7281: $$metadata{"parameter_0_$name"}=1;
7282: my $key=":parameter_0_$name";
7283: $$metacache{"$key.part"}='0';
7284: $$metacache{"$key.name"}=$name;
7285: $$metacache{"$key.type"}=$$metacache{':parameter_'.
7286: $allnames{$name}.'_'.$name.
7287: '.type'};
7288: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
7289: '.display'};
7290: my $expr='[Part: '.$allnames{$name}.']';
7291: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
7292: $$metacache{"$key.display"}=$olddis;
7293: }
7294: }
7295:
7296: # ------------------------------------------------------ Devalidate title cache
7297:
7298: sub devalidate_title_cache {
7299: my ($url)=@_;
7300: if (!$env{'request.course.id'}) { return; }
7301: my $symb=&symbread($url);
7302: if (!$symb) { return; }
7303: my $key=$env{'request.course.id'}."\0".$symb;
7304: &devalidate_cache_new('title',$key);
7305: }
7306:
7307: # ------------------------------------------------- Get the title of a resource
7308:
7309: sub gettitle {
7310: my $urlsymb=shift;
7311: my $symb=&symbread($urlsymb);
7312: if ($symb) {
7313: my $key=$env{'request.course.id'}."\0".$symb;
7314: my ($result,$cached)=&is_cached_new('title',$key);
7315: if (defined($cached)) {
7316: return $result;
7317: }
7318: my ($map,$resid,$url)=&decode_symb($symb);
7319: my $title='';
7320: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
7321: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
7322: } else {
7323: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7324: &GDBM_READER(),0640)) {
7325: my $mapid=$bighash{'map_pc_'.&clutter($map)};
7326: $title=$bighash{'title_'.$mapid.'.'.$resid};
7327: untie(%bighash);
7328: }
7329: }
7330: $title=~s/\&colon\;/\:/gs;
7331: if ($title) {
7332: return &do_cache_new('title',$key,$title,600);
7333: }
7334: $urlsymb=$url;
7335: }
7336: my $title=&metadata($urlsymb,'title');
7337: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
7338: return $title;
7339: }
7340:
7341: sub get_slot {
7342: my ($which,$cnum,$cdom)=@_;
7343: if (!$cnum || !$cdom) {
7344: (undef,my $courseid)=&whichuser();
7345: $cdom=$env{'course.'.$courseid.'.domain'};
7346: $cnum=$env{'course.'.$courseid.'.num'};
7347: }
7348: my $key=join("\0",'slots',$cdom,$cnum,$which);
7349: my %slotinfo;
7350: if (exists($remembered{$key})) {
7351: $slotinfo{$which} = $remembered{$key};
7352: } else {
7353: %slotinfo=&get('slots',[$which],$cdom,$cnum);
7354: &Apache::lonhomework::showhash(%slotinfo);
7355: my ($tmp)=keys(%slotinfo);
7356: if ($tmp=~/^error:/) { return (); }
7357: $remembered{$key} = $slotinfo{$which};
7358: }
7359: if (ref($slotinfo{$which}) eq 'HASH') {
7360: return %{$slotinfo{$which}};
7361: }
7362: return $slotinfo{$which};
7363: }
7364: # ------------------------------------------------- Update symbolic store links
7365:
7366: sub symblist {
7367: my ($mapname,%newhash)=@_;
7368: $mapname=&deversion(&declutter($mapname));
7369: my %hash;
7370: if (($env{'request.course.fn'}) && (%newhash)) {
7371: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
7372: &GDBM_WRCREAT(),0640)) {
7373: foreach my $url (keys %newhash) {
7374: next if ($url eq 'last_known'
7375: && $env{'form.no_update_last_known'});
7376: $hash{declutter($url)}=&encode_symb($mapname,
7377: $newhash{$url}->[1],
7378: $newhash{$url}->[0]);
7379: }
7380: if (untie(%hash)) {
7381: return 'ok';
7382: }
7383: }
7384: }
7385: return 'error';
7386: }
7387:
7388: # --------------------------------------------------------------- Verify a symb
7389:
7390: sub symbverify {
7391: my ($symb,$thisurl)=@_;
7392: my $thisfn=$thisurl;
7393: $thisfn=&declutter($thisfn);
7394: # direct jump to resource in page or to a sequence - will construct own symbs
7395: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
7396: # check URL part
7397: my ($map,$resid,$url)=&decode_symb($symb);
7398:
7399: unless ($url eq $thisfn) { return 0; }
7400:
7401: $symb=&symbclean($symb);
7402: $thisurl=&deversion($thisurl);
7403: $thisfn=&deversion($thisfn);
7404:
7405: my %bighash;
7406: my $okay=0;
7407:
7408: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7409: &GDBM_READER(),0640)) {
7410: my $ids=$bighash{'ids_'.&clutter($thisurl)};
7411: unless ($ids) {
7412: $ids=$bighash{'ids_/'.$thisurl};
7413: }
7414: if ($ids) {
7415: # ------------------------------------------------------------------- Has ID(s)
7416: foreach my $id (split(/\,/,$ids)) {
7417: my ($mapid,$resid)=split(/\./,$id);
7418: if (
7419: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
7420: eq $symb) {
7421: if (($env{'request.role.adv'}) ||
7422: $bighash{'encrypted_'.$id} eq $env{'request.enc'}) {
7423: $okay=1;
7424: }
7425: }
7426: }
7427: }
7428: untie(%bighash);
7429: }
7430: return $okay;
7431: }
7432:
7433: # --------------------------------------------------------------- Clean-up symb
7434:
7435: sub symbclean {
7436: my $symb=shift;
7437: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
7438: # remove version from map
7439: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
7440:
7441: # remove version from URL
7442: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
7443:
7444: # remove wrapper
7445:
7446: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
7447: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
7448: return $symb;
7449: }
7450:
7451: # ---------------------------------------------- Split symb to find map and url
7452:
7453: sub encode_symb {
7454: my ($map,$resid,$url)=@_;
7455: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
7456: }
7457:
7458: sub decode_symb {
7459: my $symb=shift;
7460: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
7461: my ($map,$resid,$url)=split(/___/,$symb);
7462: return (&fixversion($map),$resid,&fixversion($url));
7463: }
7464:
7465: sub fixversion {
7466: my $fn=shift;
7467: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
7468: my %bighash;
7469: my $uri=&clutter($fn);
7470: my $key=$env{'request.course.id'}.'_'.$uri;
7471: # is this cached?
7472: my ($result,$cached)=&is_cached_new('courseresversion',$key);
7473: if (defined($cached)) { return $result; }
7474: # unfortunately not cached, or expired
7475: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7476: &GDBM_READER(),0640)) {
7477: if ($bighash{'version_'.$uri}) {
7478: my $version=$bighash{'version_'.$uri};
7479: unless (($version eq 'mostrecent') ||
7480: ($version==&getversion($uri))) {
7481: $uri=~s/\.(\w+)$/\.$version\.$1/;
7482: }
7483: }
7484: untie %bighash;
7485: }
7486: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
7487: }
7488:
7489: sub deversion {
7490: my $url=shift;
7491: $url=~s/\.\d+\.(\w+)$/\.$1/;
7492: return $url;
7493: }
7494:
7495: # ------------------------------------------------------ Return symb list entry
7496:
7497: sub symbread {
7498: my ($thisfn,$donotrecurse)=@_;
7499: my $cache_str='request.symbread.cached.'.$thisfn;
7500: if (defined($env{$cache_str})) { return $env{$cache_str}; }
7501: # no filename provided? try from environment
7502: unless ($thisfn) {
7503: if ($env{'request.symb'}) {
7504: return $env{$cache_str}=&symbclean($env{'request.symb'});
7505: }
7506: $thisfn=$env{'request.filename'};
7507: }
7508: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
7509: # is that filename actually a symb? Verify, clean, and return
7510: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
7511: if (&symbverify($thisfn,$1)) {
7512: return $env{$cache_str}=&symbclean($thisfn);
7513: }
7514: }
7515: $thisfn=declutter($thisfn);
7516: my %hash;
7517: my %bighash;
7518: my $syval='';
7519: if (($env{'request.course.fn'}) && ($thisfn)) {
7520: my $targetfn = $thisfn;
7521: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
7522: $targetfn = 'adm/wrapper/'.$thisfn;
7523: }
7524: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
7525: $targetfn=$1;
7526: }
7527: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
7528: &GDBM_READER(),0640)) {
7529: $syval=$hash{$targetfn};
7530: untie(%hash);
7531: }
7532: # ---------------------------------------------------------- There was an entry
7533: if ($syval) {
7534: #unless ($syval=~/\_\d+$/) {
7535: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
7536: #&appenv({'request.ambiguous' => $thisfn});
7537: #return $env{$cache_str}='';
7538: #}
7539: #$syval.=$1;
7540: #}
7541: } else {
7542: # ------------------------------------------------------- Was not in symb table
7543: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7544: &GDBM_READER(),0640)) {
7545: # ---------------------------------------------- Get ID(s) for current resource
7546: my $ids=$bighash{'ids_'.&clutter($thisfn)};
7547: unless ($ids) {
7548: $ids=$bighash{'ids_/'.$thisfn};
7549: }
7550: unless ($ids) {
7551: # alias?
7552: $ids=$bighash{'mapalias_'.$thisfn};
7553: }
7554: if ($ids) {
7555: # ------------------------------------------------------------------- Has ID(s)
7556: my @possibilities=split(/\,/,$ids);
7557: if ($#possibilities==0) {
7558: # ----------------------------------------------- There is only one possibility
7559: my ($mapid,$resid)=split(/\./,$ids);
7560: $syval=&encode_symb($bighash{'map_id_'.$mapid},
7561: $resid,$thisfn);
7562: } elsif (!$donotrecurse) {
7563: # ------------------------------------------ There is more than one possibility
7564: my $realpossible=0;
7565: foreach my $id (@possibilities) {
7566: my $file=$bighash{'src_'.$id};
7567: if (&allowed('bre',$file)) {
7568: my ($mapid,$resid)=split(/\./,$id);
7569: if ($bighash{'map_type_'.$mapid} ne 'page') {
7570: $realpossible++;
7571: $syval=&encode_symb($bighash{'map_id_'.$mapid},
7572: $resid,$thisfn);
7573: }
7574: }
7575: }
7576: if ($realpossible!=1) { $syval=''; }
7577: } else {
7578: $syval='';
7579: }
7580: }
7581: untie(%bighash)
7582: }
7583: }
7584: if ($syval) {
7585: return $env{$cache_str}=$syval;
7586: }
7587: }
7588: &appenv({'request.ambiguous' => $thisfn});
7589: return $env{$cache_str}='';
7590: }
7591:
7592: # ---------------------------------------------------------- Return random seed
7593:
7594: sub numval {
7595: my $txt=shift;
7596: $txt=~tr/A-J/0-9/;
7597: $txt=~tr/a-j/0-9/;
7598: $txt=~tr/K-T/0-9/;
7599: $txt=~tr/k-t/0-9/;
7600: $txt=~tr/U-Z/0-5/;
7601: $txt=~tr/u-z/0-5/;
7602: $txt=~s/\D//g;
7603: if ($_64bit) { if ($txt > 2**32) { return -1; } }
7604: return int($txt);
7605: }
7606:
7607: sub numval2 {
7608: my $txt=shift;
7609: $txt=~tr/A-J/0-9/;
7610: $txt=~tr/a-j/0-9/;
7611: $txt=~tr/K-T/0-9/;
7612: $txt=~tr/k-t/0-9/;
7613: $txt=~tr/U-Z/0-5/;
7614: $txt=~tr/u-z/0-5/;
7615: $txt=~s/\D//g;
7616: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
7617: my $total;
7618: foreach my $val (@txts) { $total+=$val; }
7619: if ($_64bit) { if ($total > 2**32) { return -1; } }
7620: return int($total);
7621: }
7622:
7623: sub numval3 {
7624: use integer;
7625: my $txt=shift;
7626: $txt=~tr/A-J/0-9/;
7627: $txt=~tr/a-j/0-9/;
7628: $txt=~tr/K-T/0-9/;
7629: $txt=~tr/k-t/0-9/;
7630: $txt=~tr/U-Z/0-5/;
7631: $txt=~tr/u-z/0-5/;
7632: $txt=~s/\D//g;
7633: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
7634: my $total;
7635: foreach my $val (@txts) { $total+=$val; }
7636: if ($_64bit) { $total=(($total<<32)>>32); }
7637: return $total;
7638: }
7639:
7640: sub digest {
7641: my ($data)=@_;
7642: my $digest=&Digest::MD5::md5($data);
7643: my ($a,$b,$c,$d)=unpack("iiii",$digest);
7644: my ($e,$f);
7645: {
7646: use integer;
7647: $e=($a+$b);
7648: $f=($c+$d);
7649: if ($_64bit) {
7650: $e=(($e<<32)>>32);
7651: $f=(($f<<32)>>32);
7652: }
7653: }
7654: if (wantarray) {
7655: return ($e,$f);
7656: } else {
7657: my $g;
7658: {
7659: use integer;
7660: $g=($e+$f);
7661: if ($_64bit) {
7662: $g=(($g<<32)>>32);
7663: }
7664: }
7665: return $g;
7666: }
7667: }
7668:
7669: sub latest_rnd_algorithm_id {
7670: return '64bit5';
7671: }
7672:
7673: sub get_rand_alg {
7674: my ($courseid)=@_;
7675: if (!$courseid) { $courseid=(&whichuser())[1]; }
7676: if ($courseid) {
7677: return $env{"course.$courseid.rndseed"};
7678: }
7679: return &latest_rnd_algorithm_id();
7680: }
7681:
7682: sub validCODE {
7683: my ($CODE)=@_;
7684: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
7685: return 0;
7686: }
7687:
7688: sub getCODE {
7689: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
7690: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
7691: defined($Apache::lonhomework::parsing_a_task) ) &&
7692: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
7693: return $Apache::lonhomework::history{'resource.CODE'};
7694: }
7695: return undef;
7696: }
7697:
7698: sub rndseed {
7699: my ($symb,$courseid,$domain,$username)=@_;
7700: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
7701: if (!defined($symb)) {
7702: unless ($symb=$wsymb) { return time; }
7703: }
7704: if (!$courseid) { $courseid=$wcourseid; }
7705: if (!$domain) { $domain=$wdomain; }
7706: if (!$username) { $username=$wusername }
7707: my $which=&get_rand_alg();
7708:
7709: if (defined(&getCODE())) {
7710: if ($which eq '64bit5') {
7711: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
7712: } elsif ($which eq '64bit4') {
7713: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
7714: } else {
7715: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
7716: }
7717: } elsif ($which eq '64bit5') {
7718: return &rndseed_64bit5($symb,$courseid,$domain,$username);
7719: } elsif ($which eq '64bit4') {
7720: return &rndseed_64bit4($symb,$courseid,$domain,$username);
7721: } elsif ($which eq '64bit3') {
7722: return &rndseed_64bit3($symb,$courseid,$domain,$username);
7723: } elsif ($which eq '64bit2') {
7724: return &rndseed_64bit2($symb,$courseid,$domain,$username);
7725: } elsif ($which eq '64bit') {
7726: return &rndseed_64bit($symb,$courseid,$domain,$username);
7727: }
7728: return &rndseed_32bit($symb,$courseid,$domain,$username);
7729: }
7730:
7731: sub rndseed_32bit {
7732: my ($symb,$courseid,$domain,$username)=@_;
7733: {
7734: use integer;
7735: my $symbchck=unpack("%32C*",$symb) << 27;
7736: my $symbseed=numval($symb) << 22;
7737: my $namechck=unpack("%32C*",$username) << 17;
7738: my $nameseed=numval($username) << 12;
7739: my $domainseed=unpack("%32C*",$domain) << 7;
7740: my $courseseed=unpack("%32C*",$courseid);
7741: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
7742: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7743: #&logthis("rndseed :$num:$symb");
7744: if ($_64bit) { $num=(($num<<32)>>32); }
7745: return $num;
7746: }
7747: }
7748:
7749: sub rndseed_64bit {
7750: my ($symb,$courseid,$domain,$username)=@_;
7751: {
7752: use integer;
7753: my $symbchck=unpack("%32S*",$symb) << 21;
7754: my $symbseed=numval($symb) << 10;
7755: my $namechck=unpack("%32S*",$username);
7756:
7757: my $nameseed=numval($username) << 21;
7758: my $domainseed=unpack("%32S*",$domain) << 10;
7759: my $courseseed=unpack("%32S*",$courseid);
7760:
7761: my $num1=$symbchck+$symbseed+$namechck;
7762: my $num2=$nameseed+$domainseed+$courseseed;
7763: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7764: #&logthis("rndseed :$num:$symb");
7765: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7766: return "$num1,$num2";
7767: }
7768: }
7769:
7770: sub rndseed_64bit2 {
7771: my ($symb,$courseid,$domain,$username)=@_;
7772: {
7773: use integer;
7774: # strings need to be an even # of cahracters long, it it is odd the
7775: # last characters gets thrown away
7776: my $symbchck=unpack("%32S*",$symb.' ') << 21;
7777: my $symbseed=numval($symb) << 10;
7778: my $namechck=unpack("%32S*",$username.' ');
7779:
7780: my $nameseed=numval($username) << 21;
7781: my $domainseed=unpack("%32S*",$domain.' ') << 10;
7782: my $courseseed=unpack("%32S*",$courseid.' ');
7783:
7784: my $num1=$symbchck+$symbseed+$namechck;
7785: my $num2=$nameseed+$domainseed+$courseseed;
7786: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7787: #&logthis("rndseed :$num:$symb");
7788: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7789: return "$num1,$num2";
7790: }
7791: }
7792:
7793: sub rndseed_64bit3 {
7794: my ($symb,$courseid,$domain,$username)=@_;
7795: {
7796: use integer;
7797: # strings need to be an even # of cahracters long, it it is odd the
7798: # last characters gets thrown away
7799: my $symbchck=unpack("%32S*",$symb.' ') << 21;
7800: my $symbseed=numval2($symb) << 10;
7801: my $namechck=unpack("%32S*",$username.' ');
7802:
7803: my $nameseed=numval2($username) << 21;
7804: my $domainseed=unpack("%32S*",$domain.' ') << 10;
7805: my $courseseed=unpack("%32S*",$courseid.' ');
7806:
7807: my $num1=$symbchck+$symbseed+$namechck;
7808: my $num2=$nameseed+$domainseed+$courseseed;
7809: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7810: #&logthis("rndseed :$num1:$num2:$_64bit");
7811: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7812:
7813: return "$num1:$num2";
7814: }
7815: }
7816:
7817: sub rndseed_64bit4 {
7818: my ($symb,$courseid,$domain,$username)=@_;
7819: {
7820: use integer;
7821: # strings need to be an even # of cahracters long, it it is odd the
7822: # last characters gets thrown away
7823: my $symbchck=unpack("%32S*",$symb.' ') << 21;
7824: my $symbseed=numval3($symb) << 10;
7825: my $namechck=unpack("%32S*",$username.' ');
7826:
7827: my $nameseed=numval3($username) << 21;
7828: my $domainseed=unpack("%32S*",$domain.' ') << 10;
7829: my $courseseed=unpack("%32S*",$courseid.' ');
7830:
7831: my $num1=$symbchck+$symbseed+$namechck;
7832: my $num2=$nameseed+$domainseed+$courseseed;
7833: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7834: #&logthis("rndseed :$num1:$num2:$_64bit");
7835: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7836:
7837: return "$num1:$num2";
7838: }
7839: }
7840:
7841: sub rndseed_64bit5 {
7842: my ($symb,$courseid,$domain,$username)=@_;
7843: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
7844: return "$num1:$num2";
7845: }
7846:
7847: sub rndseed_CODE_64bit {
7848: my ($symb,$courseid,$domain,$username)=@_;
7849: {
7850: use integer;
7851: my $symbchck=unpack("%32S*",$symb.' ') << 16;
7852: my $symbseed=numval2($symb);
7853: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
7854: my $CODEseed=numval(&getCODE());
7855: my $courseseed=unpack("%32S*",$courseid.' ');
7856: my $num1=$symbseed+$CODEchck;
7857: my $num2=$CODEseed+$courseseed+$symbchck;
7858: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
7859: #&logthis("rndseed :$num1:$num2:$symb");
7860: if ($_64bit) { $num1=(($num1<<32)>>32); }
7861: if ($_64bit) { $num2=(($num2<<32)>>32); }
7862: return "$num1:$num2";
7863: }
7864: }
7865:
7866: sub rndseed_CODE_64bit4 {
7867: my ($symb,$courseid,$domain,$username)=@_;
7868: {
7869: use integer;
7870: my $symbchck=unpack("%32S*",$symb.' ') << 16;
7871: my $symbseed=numval3($symb);
7872: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
7873: my $CODEseed=numval3(&getCODE());
7874: my $courseseed=unpack("%32S*",$courseid.' ');
7875: my $num1=$symbseed+$CODEchck;
7876: my $num2=$CODEseed+$courseseed+$symbchck;
7877: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
7878: #&logthis("rndseed :$num1:$num2:$symb");
7879: if ($_64bit) { $num1=(($num1<<32)>>32); }
7880: if ($_64bit) { $num2=(($num2<<32)>>32); }
7881: return "$num1:$num2";
7882: }
7883: }
7884:
7885: sub rndseed_CODE_64bit5 {
7886: my ($symb,$courseid,$domain,$username)=@_;
7887: my $code = &getCODE();
7888: my ($num1,$num2)=&digest("$symb,$courseid,$code");
7889: return "$num1:$num2";
7890: }
7891:
7892: sub setup_random_from_rndseed {
7893: my ($rndseed)=@_;
7894: if ($rndseed =~/([,:])/) {
7895: my ($num1,$num2)=split(/[,:]/,$rndseed);
7896: &Math::Random::random_set_seed(abs($num1),abs($num2));
7897: } else {
7898: &Math::Random::random_set_seed_from_phrase($rndseed);
7899: }
7900: }
7901:
7902: sub latest_receipt_algorithm_id {
7903: return 'receipt3';
7904: }
7905:
7906: sub recunique {
7907: my $fucourseid=shift;
7908: my $unique;
7909: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
7910: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
7911: $unique=$env{"course.$fucourseid.internal.encseed"};
7912: } else {
7913: $unique=$perlvar{'lonReceipt'};
7914: }
7915: return unpack("%32C*",$unique);
7916: }
7917:
7918: sub recprefix {
7919: my $fucourseid=shift;
7920: my $prefix;
7921: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
7922: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
7923: $prefix=$env{"course.$fucourseid.internal.encpref"};
7924: } else {
7925: $prefix=$perlvar{'lonHostID'};
7926: }
7927: return unpack("%32C*",$prefix);
7928: }
7929:
7930: sub ireceipt {
7931: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
7932:
7933: my $return =&recprefix($fucourseid).'-';
7934:
7935: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
7936: $env{'request.state'} eq 'construct') {
7937: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
7938: return $return;
7939: }
7940:
7941: my $cuname=unpack("%32C*",$funame);
7942: my $cudom=unpack("%32C*",$fudom);
7943: my $cucourseid=unpack("%32C*",$fucourseid);
7944: my $cusymb=unpack("%32C*",$fusymb);
7945: my $cunique=&recunique($fucourseid);
7946: my $cpart=unpack("%32S*",$part);
7947: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
7948:
7949: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
7950:
7951: $return.= ($cunique%$cuname+
7952: $cunique%$cudom+
7953: $cusymb%$cuname+
7954: $cusymb%$cudom+
7955: $cucourseid%$cuname+
7956: $cucourseid%$cudom+
7957: $cpart%$cuname+
7958: $cpart%$cudom);
7959: } else {
7960: $return.= ($cunique%$cuname+
7961: $cunique%$cudom+
7962: $cusymb%$cuname+
7963: $cusymb%$cudom+
7964: $cucourseid%$cuname+
7965: $cucourseid%$cudom);
7966: }
7967: return $return;
7968: }
7969:
7970: sub receipt {
7971: my ($part)=@_;
7972: my ($symb,$courseid,$domain,$name) = &whichuser();
7973: return &ireceipt($name,$domain,$courseid,$symb,$part);
7974: }
7975:
7976: sub whichuser {
7977: my ($passedsymb)=@_;
7978: my ($symb,$courseid,$domain,$name,$publicuser);
7979: if (defined($env{'form.grade_symb'})) {
7980: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
7981: my $allowed=&allowed('vgr',$tmp_courseid);
7982: if (!$allowed &&
7983: exists($env{'request.course.sec'}) &&
7984: $env{'request.course.sec'} !~ /^\s*$/) {
7985: $allowed=&allowed('vgr',$tmp_courseid.
7986: '/'.$env{'request.course.sec'});
7987: }
7988: if ($allowed) {
7989: ($symb)=&get_env_multiple('form.grade_symb');
7990: $courseid=$tmp_courseid;
7991: ($domain)=&get_env_multiple('form.grade_domain');
7992: ($name)=&get_env_multiple('form.grade_username');
7993: return ($symb,$courseid,$domain,$name,$publicuser);
7994: }
7995: }
7996: if (!$passedsymb) {
7997: $symb=&symbread();
7998: } else {
7999: $symb=$passedsymb;
8000: }
8001: $courseid=$env{'request.course.id'};
8002: $domain=$env{'user.domain'};
8003: $name=$env{'user.name'};
8004: if ($name eq 'public' && $domain eq 'public') {
8005: if (!defined($env{'form.username'})) {
8006: $env{'form.username'}.=time.rand(10000000);
8007: }
8008: $name.=$env{'form.username'};
8009: }
8010: return ($symb,$courseid,$domain,$name,$publicuser);
8011:
8012: }
8013:
8014: # ------------------------------------------------------------ Serves up a file
8015: # returns either the contents of the file or
8016: # -1 if the file doesn't exist
8017: #
8018: # if the target is a file that was uploaded via DOCS,
8019: # a check will be made to see if a current copy exists on the local server,
8020: # if it does this will be served, otherwise a copy will be retrieved from
8021: # the home server for the course and stored in /home/httpd/html/userfiles on
8022: # the local server.
8023:
8024: sub getfile {
8025: my ($file) = @_;
8026: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
8027: &repcopy($file);
8028: return &readfile($file);
8029: }
8030:
8031: sub repcopy_userfile {
8032: my ($file)=@_;
8033: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
8034: if ($file =~ m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
8035: my ($cdom,$cnum,$filename) =
8036: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
8037: my $uri="/uploaded/$cdom/$cnum/$filename";
8038: if (-e "$file") {
8039: # we already have a local copy, check it out
8040: my @fileinfo = stat($file);
8041: my $rtncode;
8042: my $info;
8043: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
8044: if ($lwpresp ne 'ok') {
8045: # there is no such file anymore, even though we had a local copy
8046: if ($rtncode eq '404') {
8047: unlink($file);
8048: }
8049: return -1;
8050: }
8051: if ($info < $fileinfo[9]) {
8052: # nice, the file we have is up-to-date, just say okay
8053: return 'ok';
8054: } else {
8055: # the file is outdated, get rid of it
8056: unlink($file);
8057: }
8058: }
8059: # one way or the other, at this point, we don't have the file
8060: # construct the correct path for the file
8061: my @parts = ($cdom,$cnum);
8062: if ($filename =~ m|^(.+)/[^/]+$|) {
8063: push @parts, split(/\//,$1);
8064: }
8065: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
8066: foreach my $part (@parts) {
8067: $path .= '/'.$part;
8068: if (!-e $path) {
8069: mkdir($path,0770);
8070: }
8071: }
8072: # now the path exists for sure
8073: # get a user agent
8074: my $ua=new LWP::UserAgent;
8075: my $transferfile=$file.'.in.transfer';
8076: # FIXME: this should flock
8077: if (-e $transferfile) { return 'ok'; }
8078: my $request;
8079: $uri=~s/^\///;
8080: $request=new HTTP::Request('GET','http://'.&hostname(&homeserver($cnum,$cdom)).'/raw/'.$uri);
8081: my $response=$ua->request($request,$transferfile);
8082: # did it work?
8083: if ($response->is_error()) {
8084: unlink($transferfile);
8085: &logthis("Userfile repcopy failed for $uri");
8086: return -1;
8087: }
8088: # worked, rename the transfer file
8089: rename($transferfile,$file);
8090: return 'ok';
8091: }
8092:
8093: sub tokenwrapper {
8094: my $uri=shift;
8095: $uri=~s|^http\://([^/]+)||;
8096: $uri=~s|^/||;
8097: $env{'user.environment'}=~/\/([^\/]+)\.id/;
8098: my $token=$1;
8099: my (undef,$udom,$uname,$file)=split('/',$uri,4);
8100: if ($udom && $uname && $file) {
8101: $file=~s|(\?\.*)*$||;
8102: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
8103: return 'http://'.&hostname(&homeserver($uname,$udom)).'/'.$uri.
8104: (($uri=~/\?/)?'&':'?').'token='.$token.
8105: '&tokenissued='.$perlvar{'lonHostID'};
8106: } else {
8107: return '/adm/notfound.html';
8108: }
8109: }
8110:
8111: # call with reqtype HEAD: get last modification time
8112: # call with reqtype GET: get the file contents
8113: # Do not call this with reqtype GET for large files! It loads everything into memory
8114: #
8115: sub getuploaded {
8116: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
8117: $uri=~s/^\///;
8118: $uri = 'http://'.&hostname(&homeserver($cnum,$cdom)).'/raw/'.$uri;
8119: my $ua=new LWP::UserAgent;
8120: my $request=new HTTP::Request($reqtype,$uri);
8121: my $response=$ua->request($request);
8122: $$rtncode = $response->code;
8123: if (! $response->is_success()) {
8124: return 'failed';
8125: }
8126: if ($reqtype eq 'HEAD') {
8127: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
8128: } elsif ($reqtype eq 'GET') {
8129: $$info = $response->content;
8130: }
8131: return 'ok';
8132: }
8133:
8134: sub readfile {
8135: my $file = shift;
8136: if ( (! -e $file ) || ($file eq '') ) { return -1; };
8137: my $fh;
8138: open($fh,"<$file");
8139: my $a='';
8140: while (my $line = <$fh>) { $a .= $line; }
8141: return $a;
8142: }
8143:
8144: sub filelocation {
8145: my ($dir,$file) = @_;
8146: my $location;
8147: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
8148:
8149: if ($file =~ m-^/adm/-) {
8150: $file=~s-^/adm/wrapper/-/-;
8151: $file=~s-^/adm/coursedocs/showdoc/-/-;
8152: }
8153:
8154: if ($file=~m:^/~:) { # is a contruction space reference
8155: $location = $file;
8156: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
8157: } elsif ($file=~m{^/home/$match_username/public_html/}) {
8158: # is a correct contruction space reference
8159: $location = $file;
8160: } elsif ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
8161: $location = $file;
8162: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
8163: my ($udom,$uname,$filename)=
8164: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
8165: my $home=&homeserver($uname,$udom);
8166: my $is_me=0;
8167: my @ids=¤t_machine_ids();
8168: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
8169: if ($is_me) {
8170: $location=&propath($udom,$uname).'/userfiles/'.$filename;
8171: } else {
8172: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
8173: $udom.'/'.$uname.'/'.$filename;
8174: }
8175: } elsif ($file =~ m-^/adm/-) {
8176: $location = $perlvar{'lonDocRoot'}.'/'.$file;
8177: } else {
8178: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
8179: $file=~s:^/res/:/:;
8180: if ( !( $file =~ m:^/:) ) {
8181: $location = $dir. '/'.$file;
8182: } else {
8183: $location = '/home/httpd/html/res'.$file;
8184: }
8185: }
8186: $location=~s://+:/:g; # remove duplicate /
8187: while ($location=~m{/\.\./}) {
8188: if ($location =~ m{/[^/]+/\.\./}) {
8189: $location=~ s{/[^/]+/\.\./}{/}g;
8190: } else {
8191: $location=~ s{/\.\./}{/}g;
8192: }
8193: } #remove dir/..
8194: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
8195: return $location;
8196: }
8197:
8198: sub hreflocation {
8199: my ($dir,$file)=@_;
8200: unless (($file=~m-^http://-i) || ($file=~m-^/-)) {
8201: $file=filelocation($dir,$file);
8202: } elsif ($file=~m-^/adm/-) {
8203: $file=~s-^/adm/wrapper/-/-;
8204: $file=~s-^/adm/coursedocs/showdoc/-/-;
8205: }
8206: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
8207: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
8208: } elsif ($file=~m-/home/($match_username)/public_html/-) {
8209: $file=~s-^/home/($match_username)/public_html/-/~$1/-;
8210: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
8211: $file=~s-^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/
8212: -/uploaded/$1/$2/-x;
8213: }
8214: if ($file=~ m{^/userfiles/}) {
8215: $file =~ s{^/userfiles/}{/uploaded/};
8216: }
8217: return $file;
8218: }
8219:
8220: sub current_machine_domains {
8221: return &machine_domains(&hostname($perlvar{'lonHostID'}));
8222: }
8223:
8224: sub machine_domains {
8225: my ($hostname) = @_;
8226: my @domains;
8227: my %hostname = &all_hostnames();
8228: while( my($id, $name) = each(%hostname)) {
8229: # &logthis("-$id-$name-$hostname-");
8230: if ($hostname eq $name) {
8231: push(@domains,&host_domain($id));
8232: }
8233: }
8234: return @domains;
8235: }
8236:
8237: sub current_machine_ids {
8238: return &machine_ids(&hostname($perlvar{'lonHostID'}));
8239: }
8240:
8241: sub machine_ids {
8242: my ($hostname) = @_;
8243: $hostname ||= &hostname($perlvar{'lonHostID'});
8244: my @ids;
8245: my %name_to_host = &all_names();
8246: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
8247: return @{ $name_to_host{$hostname} };
8248: }
8249: return;
8250: }
8251:
8252: sub additional_machine_domains {
8253: my @domains;
8254: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
8255: while( my $line = <$fh>) {
8256: $line =~ s/\s//g;
8257: push(@domains,$line);
8258: }
8259: return @domains;
8260: }
8261:
8262: sub default_login_domain {
8263: my $domain = $perlvar{'lonDefDomain'};
8264: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
8265: foreach my $posdom (¤t_machine_domains(),
8266: &additional_machine_domains()) {
8267: if (lc($posdom) eq lc($testdomain)) {
8268: $domain=$posdom;
8269: last;
8270: }
8271: }
8272: return $domain;
8273: }
8274:
8275: # ------------------------------------------------------------- Declutters URLs
8276:
8277: sub declutter {
8278: my $thisfn=shift;
8279: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
8280: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
8281: $thisfn=~s/^\///;
8282: $thisfn=~s|^adm/wrapper/||;
8283: $thisfn=~s|^adm/coursedocs/showdoc/||;
8284: $thisfn=~s/^res\///;
8285: $thisfn=~s/\?.+$//;
8286: return $thisfn;
8287: }
8288:
8289: # ------------------------------------------------------------- Clutter up URLs
8290:
8291: sub clutter {
8292: my $thisfn='/'.&declutter(shift);
8293: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
8294: || $thisfn =~ m{^/adm/(includes|pages)} ) {
8295: $thisfn='/res'.$thisfn;
8296: }
8297: if ($thisfn !~m|/adm|) {
8298: if ($thisfn =~ m|/ext/|) {
8299: $thisfn='/adm/wrapper'.$thisfn;
8300: } else {
8301: my ($ext) = ($thisfn =~ /\.(\w+)$/);
8302: my $embstyle=&Apache::loncommon::fileembstyle($ext);
8303: if ($embstyle eq 'ssi'
8304: || ($embstyle eq 'hdn')
8305: || ($embstyle eq 'rat')
8306: || ($embstyle eq 'prv')
8307: || ($embstyle eq 'ign')) {
8308: #do nothing with these
8309: } elsif (($embstyle eq 'img')
8310: || ($embstyle eq 'emb')
8311: || ($embstyle eq 'wrp')) {
8312: $thisfn='/adm/wrapper'.$thisfn;
8313: } elsif ($embstyle eq 'unk'
8314: && $thisfn!~/\.(sequence|page)$/) {
8315: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
8316: } else {
8317: # &logthis("Got a blank emb style");
8318: }
8319: }
8320: }
8321: return $thisfn;
8322: }
8323:
8324: sub clutter_with_no_wrapper {
8325: my $uri = &clutter(shift);
8326: if ($uri =~ m-^/adm/-) {
8327: $uri =~ s-^/adm/wrapper/-/-;
8328: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
8329: }
8330: return $uri;
8331: }
8332:
8333: sub freeze_escape {
8334: my ($value)=@_;
8335: if (ref($value)) {
8336: $value=&nfreeze($value);
8337: return '__FROZEN__'.&escape($value);
8338: }
8339: return &escape($value);
8340: }
8341:
8342:
8343: sub thaw_unescape {
8344: my ($value)=@_;
8345: if ($value =~ /^__FROZEN__/) {
8346: substr($value,0,10,undef);
8347: $value=&unescape($value);
8348: return &thaw($value);
8349: }
8350: return &unescape($value);
8351: }
8352:
8353: sub correct_line_ends {
8354: my ($result)=@_;
8355: $$result =~s/\r\n/\n/mg;
8356: $$result =~s/\r/\n/mg;
8357: }
8358: # ================================================================ Main Program
8359:
8360: sub goodbye {
8361: &logthis("Starting Shut down");
8362: #not converted to using infrastruture and probably shouldn't be
8363: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
8364: #converted
8365: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
8366: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
8367: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
8368: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
8369: #1.1 only
8370: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
8371: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
8372: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
8373: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
8374: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
8375: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
8376: &logthis(sprintf("%-20s is %s",'hits',$hits));
8377: &flushcourselogs();
8378: &logthis("Shutting down");
8379: }
8380:
8381: sub get_dns {
8382: my ($url,$func,$ignore_cache) = @_;
8383: if (!$ignore_cache) {
8384: my ($content,$cached)=
8385: &Apache::lonnet::is_cached_new('dns',$url);
8386: if ($cached) {
8387: &$func($content);
8388: return;
8389: }
8390: }
8391:
8392: my %alldns;
8393: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
8394: foreach my $dns (<$config>) {
8395: next if ($dns !~ /^\^(\S*)/x);
8396: $alldns{$1} = 1;
8397: }
8398: while (%alldns) {
8399: my ($dns) = keys(%alldns);
8400: delete($alldns{$dns});
8401: my $ua=new LWP::UserAgent;
8402: my $request=new HTTP::Request('GET',"http://$dns$url");
8403: my $response=$ua->request($request);
8404: next if ($response->is_error());
8405: my @content = split("\n",$response->content);
8406: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
8407: &$func(\@content);
8408: return;
8409: }
8410: close($config);
8411: my $which = (split('/',$url))[3];
8412: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
8413: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
8414: my @content = <$config>;
8415: &$func(\@content);
8416: return;
8417: }
8418: # ------------------------------------------------------------ Read domain file
8419: {
8420: my $loaded;
8421: my %domain;
8422:
8423: sub parse_domain_tab {
8424: my ($lines) = @_;
8425: foreach my $line (@$lines) {
8426: next if ($line =~ /^(\#|\s*$ )/x);
8427:
8428: chomp($line);
8429: my ($name,@elements) = split(/:/,$line,9);
8430: my %this_domain;
8431: foreach my $field ('description', 'auth_def', 'auth_arg_def',
8432: 'lang_def', 'city', 'longi', 'lati',
8433: 'primary') {
8434: $this_domain{$field} = shift(@elements);
8435: }
8436: $domain{$name} = \%this_domain;
8437: }
8438: }
8439:
8440: sub reset_domain_info {
8441: undef($loaded);
8442: undef(%domain);
8443: }
8444:
8445: sub load_domain_tab {
8446: my ($ignore_cache) = @_;
8447: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
8448: my $fh;
8449: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
8450: my @lines = <$fh>;
8451: &parse_domain_tab(\@lines);
8452: }
8453: close($fh);
8454: $loaded = 1;
8455: }
8456:
8457: sub domain {
8458: &load_domain_tab() if (!$loaded);
8459:
8460: my ($name,$what) = @_;
8461: return if ( !exists($domain{$name}) );
8462:
8463: if (!$what) {
8464: return $domain{$name}{'description'};
8465: }
8466: return $domain{$name}{$what};
8467: }
8468: }
8469:
8470:
8471: # ------------------------------------------------------------- Read hosts file
8472: {
8473: my %hostname;
8474: my %hostdom;
8475: my %libserv;
8476: my $loaded;
8477: my %name_to_host;
8478:
8479: sub parse_hosts_tab {
8480: my ($file) = @_;
8481: foreach my $configline (@$file) {
8482: next if ($configline =~ /^(\#|\s*$ )/x);
8483: next if ($configline =~ /^\^/);
8484: chomp($configline);
8485: my ($id,$domain,$role,$name)=split(/:/,$configline);
8486: $name=~s/\s//g;
8487: if ($id && $domain && $role && $name) {
8488: $hostname{$id}=$name;
8489: push(@{$name_to_host{$name}}, $id);
8490: $hostdom{$id}=$domain;
8491: if ($role eq 'library') { $libserv{$id}=$name; }
8492: }
8493: }
8494: }
8495:
8496: sub reset_hosts_info {
8497: &purge_remembered();
8498: &reset_domain_info();
8499: &reset_hosts_ip_info();
8500: undef(%name_to_host);
8501: undef(%hostname);
8502: undef(%hostdom);
8503: undef(%libserv);
8504: undef($loaded);
8505: }
8506:
8507: sub load_hosts_tab {
8508: my ($ignore_cache) = @_;
8509: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
8510: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
8511: my @config = <$config>;
8512: &parse_hosts_tab(\@config);
8513: close($config);
8514: $loaded=1;
8515: }
8516:
8517: sub hostname {
8518: &load_hosts_tab() if (!$loaded);
8519:
8520: my ($lonid) = @_;
8521: return $hostname{$lonid};
8522: }
8523:
8524: sub all_hostnames {
8525: &load_hosts_tab() if (!$loaded);
8526:
8527: return %hostname;
8528: }
8529:
8530: sub all_names {
8531: &load_hosts_tab() if (!$loaded);
8532:
8533: return %name_to_host;
8534: }
8535:
8536: sub is_library {
8537: &load_hosts_tab() if (!$loaded);
8538:
8539: return exists($libserv{$_[0]});
8540: }
8541:
8542: sub all_library {
8543: &load_hosts_tab() if (!$loaded);
8544:
8545: return %libserv;
8546: }
8547:
8548: sub get_servers {
8549: &load_hosts_tab() if (!$loaded);
8550:
8551: my ($domain,$type) = @_;
8552: my %possible_hosts = ($type eq 'library') ? %libserv
8553: : %hostname;
8554: my %result;
8555: if (ref($domain) eq 'ARRAY') {
8556: while ( my ($host,$hostname) = each(%possible_hosts)) {
8557: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
8558: $result{$host} = $hostname;
8559: }
8560: }
8561: } else {
8562: while ( my ($host,$hostname) = each(%possible_hosts)) {
8563: if ($hostdom{$host} eq $domain) {
8564: $result{$host} = $hostname;
8565: }
8566: }
8567: }
8568: return %result;
8569: }
8570:
8571: sub host_domain {
8572: &load_hosts_tab() if (!$loaded);
8573:
8574: my ($lonid) = @_;
8575: return $hostdom{$lonid};
8576: }
8577:
8578: sub all_domains {
8579: &load_hosts_tab() if (!$loaded);
8580:
8581: my %seen;
8582: my @uniq = grep(!$seen{$_}++, values(%hostdom));
8583: return @uniq;
8584: }
8585: }
8586:
8587: {
8588: my %iphost;
8589: my %name_to_ip;
8590: my %lonid_to_ip;
8591:
8592: sub get_hosts_from_ip {
8593: my ($ip) = @_;
8594: my %iphosts = &get_iphost();
8595: if (ref($iphosts{$ip})) {
8596: return @{$iphosts{$ip}};
8597: }
8598: return;
8599: }
8600:
8601: sub reset_hosts_ip_info {
8602: undef(%iphost);
8603: undef(%name_to_ip);
8604: undef(%lonid_to_ip);
8605: }
8606:
8607: sub get_host_ip {
8608: my ($lonid) = @_;
8609: if (exists($lonid_to_ip{$lonid})) {
8610: return $lonid_to_ip{$lonid};
8611: }
8612: my $name=&hostname($lonid);
8613: my $ip = gethostbyname($name);
8614: return if (!$ip || length($ip) ne 4);
8615: $ip=inet_ntoa($ip);
8616: $name_to_ip{$name} = $ip;
8617: $lonid_to_ip{$lonid} = $ip;
8618: return $ip;
8619: }
8620:
8621: sub get_iphost {
8622: my ($ignore_cache) = @_;
8623:
8624: if (!$ignore_cache) {
8625: if (%iphost) {
8626: return %iphost;
8627: }
8628: my ($ip_info,$cached)=
8629: &Apache::lonnet::is_cached_new('iphost','iphost');
8630: if ($cached) {
8631: %iphost = %{$ip_info->[0]};
8632: %name_to_ip = %{$ip_info->[1]};
8633: %lonid_to_ip = %{$ip_info->[2]};
8634: return %iphost;
8635: }
8636: }
8637:
8638: # get yesterday's info for fallback
8639: my %old_name_to_ip;
8640: my ($ip_info,$cached)=
8641: &Apache::lonnet::is_cached_new('iphost','iphost');
8642: if ($cached) {
8643: %old_name_to_ip = %{$ip_info->[1]};
8644: }
8645:
8646: my %name_to_host = &all_names();
8647: foreach my $name (keys(%name_to_host)) {
8648: my $ip;
8649: if (!exists($name_to_ip{$name})) {
8650: $ip = gethostbyname($name);
8651: if (!$ip || length($ip) ne 4) {
8652: if (defined($old_name_to_ip{$name})) {
8653: $ip = $old_name_to_ip{$name};
8654: &logthis("Can't find $name defaulting to old $ip");
8655: } else {
8656: &logthis("Name $name no IP found");
8657: next;
8658: }
8659: } else {
8660: $ip=inet_ntoa($ip);
8661: }
8662: $name_to_ip{$name} = $ip;
8663: } else {
8664: $ip = $name_to_ip{$name};
8665: }
8666: foreach my $id (@{ $name_to_host{$name} }) {
8667: $lonid_to_ip{$id} = $ip;
8668: }
8669: push(@{$iphost{$ip}},@{$name_to_host{$name}});
8670: }
8671: &Apache::lonnet::do_cache_new('iphost','iphost',
8672: [\%iphost,\%name_to_ip,\%lonid_to_ip],
8673: 48*60*60);
8674:
8675: return %iphost;
8676: }
8677: }
8678:
8679: BEGIN {
8680:
8681: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
8682: unless ($readit) {
8683: {
8684: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
8685: %perlvar = (%perlvar,%{$configvars});
8686: }
8687:
8688:
8689: # ------------------------------------------------------ Read spare server file
8690: {
8691: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
8692:
8693: while (my $configline=<$config>) {
8694: chomp($configline);
8695: if ($configline) {
8696: my ($host,$type) = split(':',$configline,2);
8697: if (!defined($type) || $type eq '') { $type = 'default' };
8698: push(@{ $spareid{$type} }, $host);
8699: }
8700: }
8701: close($config);
8702: }
8703: # ------------------------------------------------------------ Read permissions
8704: {
8705: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
8706:
8707: while (my $configline=<$config>) {
8708: chomp($configline);
8709: if ($configline) {
8710: my ($role,$perm)=split(/ /,$configline);
8711: if ($perm ne '') { $pr{$role}=$perm; }
8712: }
8713: }
8714: close($config);
8715: }
8716:
8717: # -------------------------------------------- Read plain texts for permissions
8718: {
8719: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
8720:
8721: while (my $configline=<$config>) {
8722: chomp($configline);
8723: if ($configline) {
8724: my ($short,@plain)=split(/:/,$configline);
8725: %{$prp{$short}} = ();
8726: if (@plain > 0) {
8727: $prp{$short}{'std'} = $plain[0];
8728: for (my $i=1; $i<@plain; $i++) {
8729: $prp{$short}{'alt'.$i} = $plain[$i];
8730: }
8731: }
8732: }
8733: }
8734: close($config);
8735: }
8736:
8737: # ---------------------------------------------------------- Read package table
8738: {
8739: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
8740:
8741: while (my $configline=<$config>) {
8742: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
8743: chomp($configline);
8744: my ($short,$plain)=split(/:/,$configline);
8745: my ($pack,$name)=split(/\&/,$short);
8746: if ($plain ne '') {
8747: $packagetab{$pack.'&'.$name.'&name'}=$name;
8748: $packagetab{$short}=$plain;
8749: }
8750: }
8751: close($config);
8752: }
8753:
8754: # ------------- set up temporary directory
8755: {
8756: $tmpdir = $perlvar{'lonDaemons'}.'/tmp/';
8757:
8758: }
8759:
8760: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
8761: 'compress_threshold'=> 20_000,
8762: });
8763:
8764: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
8765: $dumpcount=0;
8766:
8767: &logtouch();
8768: &logthis('<font color="yellow">INFO: Read configuration</font>');
8769: $readit=1;
8770: {
8771: use integer;
8772: my $test=(2**32)+1;
8773: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
8774: &logthis(" Detected 64bit platform ($_64bit)");
8775: }
8776: }
8777: }
8778:
8779: 1;
8780: __END__
8781:
8782: =pod
8783:
8784: =head1 NAME
8785:
8786: Apache::lonnet - Subroutines to ask questions about things in the network.
8787:
8788: =head1 SYNOPSIS
8789:
8790: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
8791:
8792: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
8793:
8794: Common parameters:
8795:
8796: =over 4
8797:
8798: =item *
8799:
8800: $uname : an internal username (if $cname expecting a course Id specifically)
8801:
8802: =item *
8803:
8804: $udom : a domain (if $cdom expecting a course's domain specifically)
8805:
8806: =item *
8807:
8808: $symb : a resource instance identifier
8809:
8810: =item *
8811:
8812: $namespace : the name of a .db file that contains the data needed or
8813: being set.
8814:
8815: =back
8816:
8817: =head1 OVERVIEW
8818:
8819: lonnet provides subroutines which interact with the
8820: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
8821: about classes, users, and resources.
8822:
8823: For many of these objects you can also use this to store data about
8824: them or modify them in various ways.
8825:
8826: =head2 Symbs
8827:
8828: To identify a specific instance of a resource, LON-CAPA uses symbols
8829: or "symbs"X<symb>. These identifiers are built from the URL of the
8830: map, the resource number of the resource in the map, and the URL of
8831: the resource itself. The latter is somewhat redundant, but might help
8832: if maps change.
8833:
8834: An example is
8835:
8836: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
8837:
8838: The respective map entry is
8839:
8840: <resource id="19" src="/res/msu/korte/tests/part12.problem"
8841: title="Problem 2">
8842: </resource>
8843:
8844: Symbs are used by the random number generator, as well as to store and
8845: restore data specific to a certain instance of for example a problem.
8846:
8847: =head2 Storing And Retrieving Data
8848:
8849: X<store()>X<cstore()>X<restore()>Three of the most important functions
8850: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
8851: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
8852: is is the non-critical message twin of cstore. These functions are for
8853: handlers to store a perl hash to a user's permanent data space in an
8854: easy manner, and to retrieve it again on another call. It is expected
8855: that a handler would use this once at the beginning to retrieve data,
8856: and then again once at the end to send only the new data back.
8857:
8858: The data is stored in the user's data directory on the user's
8859: homeserver under the ID of the course.
8860:
8861: The hash that is returned by restore will have all of the previous
8862: value for all of the elements of the hash.
8863:
8864: Example:
8865:
8866: #creating a hash
8867: my %hash;
8868: $hash{'foo'}='bar';
8869:
8870: #storing it
8871: &Apache::lonnet::cstore(\%hash);
8872:
8873: #changing a value
8874: $hash{'foo'}='notbar';
8875:
8876: #adding a new value
8877: $hash{'bar'}='foo';
8878: &Apache::lonnet::cstore(\%hash);
8879:
8880: #retrieving the hash
8881: my %history=&Apache::lonnet::restore();
8882:
8883: #print the hash
8884: foreach my $key (sort(keys(%history))) {
8885: print("\%history{$key} = $history{$key}");
8886: }
8887:
8888: Will print out:
8889:
8890: %history{1:foo} = bar
8891: %history{1:keys} = foo:timestamp
8892: %history{1:timestamp} = 990455579
8893: %history{2:bar} = foo
8894: %history{2:foo} = notbar
8895: %history{2:keys} = foo:bar:timestamp
8896: %history{2:timestamp} = 990455580
8897: %history{bar} = foo
8898: %history{foo} = notbar
8899: %history{timestamp} = 990455580
8900: %history{version} = 2
8901:
8902: Note that the special hash entries C<keys>, C<version> and
8903: C<timestamp> were added to the hash. C<version> will be equal to the
8904: total number of versions of the data that have been stored. The
8905: C<timestamp> attribute will be the UNIX time the hash was
8906: stored. C<keys> is available in every historical section to list which
8907: keys were added or changed at a specific historical revision of a
8908: hash.
8909:
8910: B<Warning>: do not store the hash that restore returns directly. This
8911: will cause a mess since it will restore the historical keys as if the
8912: were new keys. I.E. 1:foo will become 1:1:foo etc.
8913:
8914: Calling convention:
8915:
8916: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
8917: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
8918:
8919: For more detailed information, see lonnet specific documentation.
8920:
8921: =head1 RETURN MESSAGES
8922:
8923: =over 4
8924:
8925: =item * B<con_lost>: unable to contact remote host
8926:
8927: =item * B<con_delayed>: unable to contact remote host, message will be delivered
8928: when the connection is brought back up
8929:
8930: =item * B<con_failed>: unable to contact remote host and unable to save message
8931: for later delivery
8932:
8933: =item * B<error:>: an error a occured, a description of the error follows the :
8934:
8935: =item * B<no_such_host>: unable to fund a host associated with the user/domain
8936: that was requested
8937:
8938: =back
8939:
8940: =head1 PUBLIC SUBROUTINES
8941:
8942: =head2 Session Environment Functions
8943:
8944: =over 4
8945:
8946: =item *
8947: X<appenv()>
8948: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
8949: the user envirnoment file, and will be restored for each access this
8950: user makes during this session, also modifies the %env for the current
8951: process. Optional rolesarrayref - if defined contains a reference to an array
8952: of roles which are exempt from the restriction on modifying user.role entries
8953: in the user's environment.db and in %env.
8954:
8955: =item *
8956: X<delenv()>
8957: B<delenv($regexp)>: removes all items from the session
8958: environment file that matches the regular expression in $regexp. The
8959: values are also delted from the current processes %env.
8960:
8961: =item * get_env_multiple($name)
8962:
8963: gets $name from the %env hash, it seemlessly handles the cases where multiple
8964: values may be defined and end up as an array ref.
8965:
8966: returns an array of values
8967:
8968: =back
8969:
8970: =head2 User Information
8971:
8972: =over 4
8973:
8974: =item *
8975: X<queryauthenticate()>
8976: B<queryauthenticate($uname,$udom)>: try to determine user's current
8977: authentication scheme
8978:
8979: =item *
8980: X<authenticate()>
8981: B<authenticate($uname,$upass,$udom)>: try to
8982: authenticate user from domain's lib servers (first use the current
8983: one). C<$upass> should be the users password.
8984:
8985: =item *
8986: X<homeserver()>
8987: B<homeserver($uname,$udom)>: find the server which has
8988: the user's directory and files (there must be only one), this caches
8989: the answer, and also caches if there is a borken connection.
8990:
8991: =item *
8992: X<idget()>
8993: B<idget($udom,@ids)>: find the usernames behind a list of IDs
8994: (IDs are a unique resource in a domain, there must be only 1 ID per
8995: username, and only 1 username per ID in a specific domain) (returns
8996: hash: id=>name,id=>name)
8997:
8998: =item *
8999: X<idrget()>
9000: B<idrget($udom,@unames)>: find the IDs behind a list of
9001: usernames (returns hash: name=>id,name=>id)
9002:
9003: =item *
9004: X<idput()>
9005: B<idput($udom,%ids)>: store away a list of names and associated IDs
9006:
9007: =item *
9008: X<rolesinit()>
9009: B<rolesinit($udom,$username,$authhost)>: get user privileges
9010:
9011: =item *
9012: X<getsection()>
9013: B<getsection($udom,$uname,$cname)>: finds the section of student in the
9014: course $cname, return section name/number or '' for "not in course"
9015: and '-1' for "no section"
9016:
9017: =item *
9018: X<userenvironment()>
9019: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
9020: passed in @what from the requested user's environment, returns a hash
9021:
9022: =item *
9023: X<userlog_query()>
9024: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
9025: activity.log file. %filters defines filters applied when parsing the
9026: log file. These can be start or end timestamps, or the type of action
9027: - log to look for Login or Logout events, check for Checkin or
9028: Checkout, role for role selection. The response is in the form
9029: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
9030: escaped strings of the action recorded in the activity.log file.
9031:
9032: =back
9033:
9034: =head2 User Roles
9035:
9036: =over 4
9037:
9038: =item *
9039:
9040: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
9041: F: full access
9042: U,I,K: authentication modes (cxx only)
9043: '': forbidden
9044: 1: user needs to choose course
9045: 2: browse allowed
9046: A: passphrase authentication needed
9047:
9048: =item *
9049:
9050: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
9051: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
9052: and course level
9053:
9054: =item *
9055:
9056: plaintext($short) : return value in %prp hash (rolesplain.tab); plain text
9057: explanation of a user role term
9058:
9059: =item *
9060:
9061: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
9062: All arguments are optional. Returns a hash of a roles, either for
9063: co-author/assistant author roles for a user's Construction Space
9064: (default), or if $context is 'userroles', roles for the user himself,
9065: In the hash, keys are set to colon-separated $uname,$udom,$role, and
9066: (optionally) if $withsec is true, a fourth colon-separated item - $section.
9067: For each key, value is set to colon-separated start and end times for
9068: the role. If no username and domain are specified, will default to
9069: current user/domain. Types, roles, and roledoms are references to arrays
9070: of role statuses (active, future or previous), roles
9071: (e.g., cc,in, st etc.) and domains of the roles which can be used
9072: to restrict the list of roles reported. If no array ref is
9073: provided for types, will default to return only active roles.
9074:
9075: =back
9076:
9077: =head2 User Modification
9078:
9079: =over 4
9080:
9081: =item *
9082:
9083: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
9084: user for the level given by URL. Optional start and end dates (leave empty
9085: string or zero for "no date")
9086:
9087: =item *
9088:
9089: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
9090: change a users, password, possible return values are: ok,
9091: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
9092: refused
9093:
9094: =item *
9095:
9096: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
9097:
9098: =item *
9099:
9100: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene) :
9101: modify user
9102:
9103: =item *
9104:
9105: modifystudent
9106:
9107: modify a student's enrollment and identification information.
9108: The course id is resolved based on the current users environment.
9109: This means the envoking user must be a course coordinator or otherwise
9110: associated with a course.
9111:
9112: This call is essentially a wrapper for lonnet::modifyuser and
9113: lonnet::modify_student_enrollment
9114:
9115: Inputs:
9116:
9117: =over 4
9118:
9119: =item B<$udom> Student's loncapa domain
9120:
9121: =item B<$uname> Student's loncapa login name
9122:
9123: =item B<$uid> Student's id/student number
9124:
9125: =item B<$umode> Student's authentication mode
9126:
9127: =item B<$upass> Student's password
9128:
9129: =item B<$first> Student's first name
9130:
9131: =item B<$middle> Student's middle name
9132:
9133: =item B<$last> Student's last name
9134:
9135: =item B<$gene> Student's generation
9136:
9137: =item B<$usec> Student's section in course
9138:
9139: =item B<$end> Unix time of the roles expiration
9140:
9141: =item B<$start> Unix time of the roles start date
9142:
9143: =item B<$forceid> If defined, allow $uid to be changed
9144:
9145: =item B<$desiredhome> server to use as home server for student
9146:
9147: =item B<$email> Student's permanent e-mail address
9148:
9149: =item B<$type> Type of enrollment (auto or manual)
9150:
9151: =item B<$locktype>
9152:
9153: =item B<$cid>
9154:
9155: =item B<$selfenroll>
9156:
9157: =item B<$context>
9158:
9159: =back
9160:
9161: =item *
9162:
9163: modify_student_enrollment
9164:
9165: Change a students enrollment status in a class. The environment variable
9166: 'role.request.course' must be defined for this function to proceed.
9167:
9168: Inputs:
9169:
9170: =over 4
9171:
9172: =item $udom, students domain
9173:
9174: =item $uname, students name
9175:
9176: =item $uid, students user id
9177:
9178: =item $first, students first name
9179:
9180: =item $middle
9181:
9182: =item $last
9183:
9184: =item $gene
9185:
9186: =item $usec
9187:
9188: =item $end
9189:
9190: =item $start
9191:
9192: =item $type
9193:
9194: =item $locktype
9195:
9196: =item $cid
9197:
9198: =item $selfenroll
9199:
9200: =item $context
9201:
9202: =back
9203:
9204:
9205: =item *
9206:
9207: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
9208: custom role; give a custom role to a user for the level given by URL. Specify
9209: name and domain of role author, and role name
9210:
9211: =item *
9212:
9213: revokerole($udom,$uname,$url,$role) : revoke a role for url
9214:
9215: =item *
9216:
9217: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
9218:
9219: =back
9220:
9221: =head2 Course Infomation
9222:
9223: =over 4
9224:
9225: =item *
9226:
9227: coursedescription($courseid) : returns a hash of information about the
9228: specified course id, including all environment settings for the
9229: course, the description of the course will be in the hash under the
9230: key 'description'
9231:
9232: =item *
9233:
9234: resdata($name,$domain,$type,@which) : request for current parameter
9235: setting for a specific $type, where $type is either 'course' or 'user',
9236: @what should be a list of parameters to ask about. This routine caches
9237: answers for 5 minutes.
9238:
9239: =item *
9240:
9241: get_courseresdata($courseid, $domain) : dump the entire course resource
9242: data base, returning a hash that is keyed by the resource name and has
9243: values that are the resource value. I believe that the timestamps and
9244: versions are also returned.
9245:
9246:
9247: =back
9248:
9249: =head2 Course Modification
9250:
9251: =over 4
9252:
9253: =item *
9254:
9255: writecoursepref($courseid,%prefs) : write preferences (environment
9256: database) for a course
9257:
9258: =item *
9259:
9260: createcourse($udom,$description,$url) : make/modify course
9261:
9262: =back
9263:
9264: =head2 Resource Subroutines
9265:
9266: =over 4
9267:
9268: =item *
9269:
9270: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
9271:
9272: =item *
9273:
9274: repcopy($filename) : subscribes to the requested file, and attempts to
9275: replicate from the owning library server, Might return
9276: 'unavailable', 'not_found', 'forbidden', 'ok', or
9277: 'bad_request', also attempts to grab the metadata for the
9278: resource. Expects the local filesystem pathname
9279: (/home/httpd/html/res/....)
9280:
9281: =back
9282:
9283: =head2 Resource Information
9284:
9285: =over 4
9286:
9287: =item *
9288:
9289: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
9290: a vairety of different possible values, $varname should be a request
9291: string, and the other parameters can be used to specify who and what
9292: one is asking about.
9293:
9294: Possible values for $varname are environment.lastname (or other item
9295: from the envirnment hash), user.name (or someother aspect about the
9296: user), resource.0.maxtries (or some other part and parameter of a
9297: resource)
9298:
9299: =item *
9300:
9301: directcondval($number) : get current value of a condition; reads from a state
9302: string
9303:
9304: =item *
9305:
9306: condval($condidx) : value of condition index based on state
9307:
9308: =item *
9309:
9310: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
9311: resource's metadata, $what should be either a specific key, or either
9312: 'keys' (to get a list of possible keys) or 'packages' to get a list of
9313: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
9314:
9315: this function automatically caches all requests
9316:
9317: =item *
9318:
9319: metadata_query($query,$custom,$customshow) : make a metadata query against the
9320: network of library servers; returns file handle of where SQL and regex results
9321: will be stored for query
9322:
9323: =item *
9324:
9325: symbread($filename) : return symbolic list entry (filename argument optional);
9326: returns the data handle
9327:
9328: =item *
9329:
9330: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
9331: a possible symb for the URL in $thisfn, and if is an encryypted
9332: resource that the user accessed using /enc/ returns a 1 on success, 0
9333: on failure, user must be in a course, as it assumes the existance of
9334: the course initial hash, and uses $env('request.course.id'}
9335:
9336:
9337: =item *
9338:
9339: symbclean($symb) : removes versions numbers from a symb, returns the
9340: cleaned symb
9341:
9342: =item *
9343:
9344: is_on_map($uri) : checks if the $uri is somewhere on the current
9345: course map, user must be in a course for it to work.
9346:
9347: =item *
9348:
9349: numval($salt) : return random seed value (addend for rndseed)
9350:
9351: =item *
9352:
9353: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
9354: a random seed, all arguments are optional, if they aren't sent it uses the
9355: environment to derive them. Note: if symb isn't sent and it can't get one
9356: from &symbread it will use the current time as its return value
9357:
9358: =item *
9359:
9360: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
9361: unfakeable, receipt
9362:
9363: =item *
9364:
9365: receipt() : API to ireceipt working off of env values; given out to users
9366:
9367: =item *
9368:
9369: countacc($url) : count the number of accesses to a given URL
9370:
9371: =item *
9372:
9373: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
9374:
9375: =item *
9376:
9377: checkin($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 $tcrsid)
9378:
9379: =item *
9380:
9381: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
9382:
9383: =item *
9384:
9385: devalidate($symb) : devalidate temporary spreadsheet calculations,
9386: forcing spreadsheet to reevaluate the resource scores next time.
9387:
9388: =back
9389:
9390: =head2 Storing/Retreiving Data
9391:
9392: =over 4
9393:
9394: =item *
9395:
9396: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
9397: for this url; hashref needs to be given and should be a \%hashname; the
9398: remaining args aren't required and if they aren't passed or are '' they will
9399: be derived from the env
9400:
9401: =item *
9402:
9403: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
9404: uses critical subroutine
9405:
9406: =item *
9407:
9408: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
9409: all args are optional
9410:
9411: =item *
9412:
9413: dumpstore($namespace,$udom,$uname,$regexp,$range) :
9414: dumps the complete (or key matching regexp) namespace into a hash
9415: ($udom, $uname, $regexp, $range are optional) for a namespace that is
9416: normally &store()ed into
9417:
9418: $range should be either an integer '100' (give me the first 100
9419: matching records)
9420: or be two integers sperated by a - with no spaces
9421: '30-50' (give me the 30th through the 50th matching
9422: records)
9423:
9424:
9425: =item *
9426:
9427: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
9428: replaces a &store() version of data with a replacement set of data
9429: for a particular resource in a namespace passed in the $storehash hash
9430: reference
9431:
9432: =item *
9433:
9434: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
9435: works very similar to store/cstore, but all data is stored in a
9436: temporary location and can be reset using tmpreset, $storehash should
9437: be a hash reference, returns nothing on success
9438:
9439: =item *
9440:
9441: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
9442: similar to restore, but all data is stored in a temporary location and
9443: can be reset using tmpreset. Returns a hash of values on success,
9444: error string otherwise.
9445:
9446: =item *
9447:
9448: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
9449: deltes all keys for $symb form the temporary storage hash.
9450:
9451: =item *
9452:
9453: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
9454: reference filled in from namesp ($udom and $uname are optional)
9455:
9456: =item *
9457:
9458: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
9459: namesp ($udom and $uname are optional)
9460:
9461: =item *
9462:
9463: dump($namespace,$udom,$uname,$regexp,$range) :
9464: dumps the complete (or key matching regexp) namespace into a hash
9465: ($udom, $uname, $regexp, $range are optional)
9466:
9467: $range should be either an integer '100' (give me the first 100
9468: matching records)
9469: or be two integers sperated by a - with no spaces
9470: '30-50' (give me the 30th through the 50th matching
9471: records)
9472: =item *
9473:
9474: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
9475: $store can be a scalar, an array reference, or if the amount to be
9476: incremented is > 1, a hash reference.
9477:
9478: ($udom and $uname are optional)
9479:
9480: =item *
9481:
9482: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
9483: ($udom and $uname are optional)
9484:
9485: =item *
9486:
9487: cput($namespace,$storehash,$udom,$uname) : critical put
9488: ($udom and $uname are optional)
9489:
9490: =item *
9491:
9492: newput($namespace,$storehash,$udom,$uname) :
9493:
9494: Attempts to store the items in the $storehash, but only if they don't
9495: currently exist, if this succeeds you can be certain that you have
9496: successfully created a new key value pair in the $namespace db.
9497:
9498:
9499: Args:
9500: $namespace: name of database to store values to
9501: $storehash: hashref to store to the db
9502: $udom: (optional) domain of user containing the db
9503: $uname: (optional) name of user caontaining the db
9504:
9505: Returns:
9506: 'ok' -> succeeded in storing all keys of $storehash
9507: 'key_exists: <key>' -> failed to anything out of $storehash, as at
9508: least <key> already existed in the db (other
9509: requested keys may also already exist)
9510: 'error: <msg>' -> unable to tie the DB or other erorr occured
9511: 'con_lost' -> unable to contact request server
9512: 'refused' -> action was not allowed by remote machine
9513:
9514:
9515: =item *
9516:
9517: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
9518: reference filled in from namesp (encrypts the return communication)
9519: ($udom and $uname are optional)
9520:
9521: =item *
9522:
9523: log($udom,$name,$home,$message) : write to permanent log for user; use
9524: critical subroutine
9525:
9526: =item *
9527:
9528: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
9529: array reference filled in from namespace found in domain level on either
9530: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
9531:
9532: =item *
9533:
9534: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
9535: domain level either on specified domain server ($uhome) or primary domain
9536: server ($udom and $uhome are optional)
9537:
9538: =item *
9539:
9540: get_domain_defaults($target_domain) : returns hash with defaults for
9541: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
9542: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
9543: or localauth), initial password or a kerberos realm, language (e.g., en-us).
9544: Values are retrieved from cache (if current), or from domain's configuration.db
9545: (if available), or lastly from values in lonTabs/dns_domain,tab,
9546: or lonTabs/domain.tab.
9547:
9548: %domdefaults = &get_auth_defaults($target_domain);
9549:
9550: =back
9551:
9552: =head2 Network Status Functions
9553:
9554: =over 4
9555:
9556: =item *
9557:
9558: dirlist($uri) : return directory list based on URI
9559:
9560: =item *
9561:
9562: spareserver() : find server with least workload from spare.tab
9563:
9564: =back
9565:
9566: =head2 Apache Request
9567:
9568: =over 4
9569:
9570: =item *
9571:
9572: ssi($url,%hash) : server side include, does a complete request cycle on url to
9573: localhost, posts hash
9574:
9575: =back
9576:
9577: =head2 Data to String to Data
9578:
9579: =over 4
9580:
9581: =item *
9582:
9583: hash2str(%hash) : convert a hash into a string complete with escaping and '='
9584: and '&' separators, supports elements that are arrayrefs and hashrefs
9585:
9586: =item *
9587:
9588: hashref2str($hashref) : convert a hashref into a string complete with
9589: escaping and '=' and '&' separators, supports elements that are
9590: arrayrefs and hashrefs
9591:
9592: =item *
9593:
9594: arrayref2str($arrayref) : convert an arrayref into a string complete
9595: with escaping and '&' separators, supports elements that are arrayrefs
9596: and hashrefs
9597:
9598: =item *
9599:
9600: str2hash($string) : convert string to hash using unescaping and
9601: splitting on '=' and '&', supports elements that are arrayrefs and
9602: hashrefs
9603:
9604: =item *
9605:
9606: str2array($string) : convert string to hash using unescaping and
9607: splitting on '&', supports elements that are arrayrefs and hashrefs
9608:
9609: =back
9610:
9611: =head2 Logging Routines
9612:
9613: =over 4
9614:
9615: These routines allow one to make log messages in the lonnet.log and
9616: lonnet.perm logfiles.
9617:
9618: =item *
9619:
9620: logtouch() : make sure the logfile, lonnet.log, exists
9621:
9622: =item *
9623:
9624: logthis() : append message to the normal lonnet.log file, it gets
9625: preiodically rolled over and deleted.
9626:
9627: =item *
9628:
9629: logperm() : append a permanent message to lonnet.perm.log, this log
9630: file never gets deleted by any automated portion of the system, only
9631: messages of critical importance should go in here.
9632:
9633: =back
9634:
9635: =head2 General File Helper Routines
9636:
9637: =over 4
9638:
9639: =item *
9640:
9641: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
9642: (a) files in /uploaded
9643: (i) If a local copy of the file exists -
9644: compares modification date of local copy with last-modified date for
9645: definitive version stored on home server for course. If local copy is
9646: stale, requests a new version from the home server and stores it.
9647: If the original has been removed from the home server, then local copy
9648: is unlinked.
9649: (ii) If local copy does not exist -
9650: requests the file from the home server and stores it.
9651:
9652: If $caller is 'uploadrep':
9653: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
9654: for request for files originally uploaded via DOCS.
9655: - returns 'ok' if fresh local copy now available, -1 otherwise.
9656:
9657: Otherwise:
9658: This indicates a call from the content generation phase of the request.
9659: - returns the entire contents of the file or -1.
9660:
9661: (b) files in /res
9662: - returns the entire contents of a file or -1;
9663: it properly subscribes to and replicates the file if neccessary.
9664:
9665:
9666: =item *
9667:
9668: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
9669: reference
9670:
9671: returns either a stat() list of data about the file or an empty list
9672: if the file doesn't exist or couldn't find out about it (connection
9673: problems or user unknown)
9674:
9675: =item *
9676:
9677: filelocation($dir,$file) : returns file system location of a file
9678: based on URI; meant to be "fairly clean" absolute reference, $dir is a
9679: directory that relative $file lookups are to looked in ($dir of /a/dir
9680: and a file of ../bob will become /a/bob)
9681:
9682: =item *
9683:
9684: hreflocation($dir,$file) : returns file system location or a URL; same as
9685: filelocation except for hrefs
9686:
9687: =item *
9688:
9689: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
9690:
9691: =back
9692:
9693: =head2 Usererfile file routines (/uploaded*)
9694:
9695: =over 4
9696:
9697: =item *
9698:
9699: userfileupload(): main rotine for putting a file in a user or course's
9700: filespace, arguments are,
9701:
9702: formname - required - this is the name of the element in $env where the
9703: filename, and the contents of the file to create/modifed exist
9704: the filename is in $env{'form.'.$formname.'.filename'} and the
9705: contents of the file is located in $env{'form.'.$formname}
9706: coursedoc - if true, store the file in the course of the active role
9707: of the current user
9708: subdir - required - subdirectory to put the file in under ../userfiles/
9709: if undefined, it will be placed in "unknown"
9710:
9711: (This routine calls clean_filename() to remove any dangerous
9712: characters from the filename, and then calls finuserfileupload() to
9713: complete the transaction)
9714:
9715: returns either the url of the uploaded file (/uploaded/....) if successful
9716: and /adm/notfound.html if unsuccessful
9717:
9718: =item *
9719:
9720: clean_filename(): routine for cleaing a filename up for storage in
9721: userfile space, argument is:
9722:
9723: filename - proposed filename
9724:
9725: returns: the new clean filename
9726:
9727: =item *
9728:
9729: finishuserfileupload(): routine that creaes and sends the file to
9730: userspace, probably shouldn't be called directly
9731:
9732: docuname: username or courseid of destination for the file
9733: docudom: domain of user/course of destination for the file
9734: formname: same as for userfileupload()
9735: fname: filename (inculding subdirectories) for the file
9736:
9737: returns either the url of the uploaded file (/uploaded/....) if successful
9738: and /adm/notfound.html if unsuccessful
9739:
9740: =item *
9741:
9742: renameuserfile(): renames an existing userfile to a new name
9743:
9744: Args:
9745: docuname: username or courseid of destination for the file
9746: docudom: domain of user/course of destination for the file
9747: old: current file name (including any subdirs under userfiles)
9748: new: desired file name (including any subdirs under userfiles)
9749:
9750: =item *
9751:
9752: mkdiruserfile(): creates a directory is a userfiles dir
9753:
9754: Args:
9755: docuname: username or courseid of destination for the file
9756: docudom: domain of user/course of destination for the file
9757: dir: dir to create (including any subdirs under userfiles)
9758:
9759: =item *
9760:
9761: removeuserfile(): removes a file that exists in userfiles
9762:
9763: Args:
9764: docuname: username or courseid of destination for the file
9765: docudom: domain of user/course of destination for the file
9766: fname: filname to delete (including any subdirs under userfiles)
9767:
9768: =item *
9769:
9770: removeuploadedurl(): convience function for removeuserfile()
9771:
9772: Args:
9773: url: a full /uploaded/... url to delete
9774:
9775: =item *
9776:
9777: get_portfile_permissions():
9778: Args:
9779: domain: domain of user or course contain the portfolio files
9780: user: name of user or num of course contain the portfolio files
9781: Returns:
9782: hashref of a dump of the proper file_permissions.db
9783:
9784:
9785: =item *
9786:
9787: get_access_controls():
9788:
9789: Args:
9790: current_permissions: the hash ref returned from get_portfile_permissions()
9791: group: (optional) the group you want the files associated with
9792: file: (optional) the file you want access info on
9793:
9794: Returns:
9795: a hash (keys are file names) of hashes containing
9796: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
9797: values are XML containing access control settings (see below)
9798:
9799: Internal notes:
9800:
9801: access controls are stored in file_permissions.db as key=value pairs.
9802: key -> path to file/file_name\0uniqueID:scope_end_start
9803: where scope -> public,guest,course,group,domains or users.
9804: end -> UNIX time for end of access (0 -> no end date)
9805: start -> UNIX time for start of access
9806:
9807: value -> XML description of access control
9808: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
9809: <start></start>
9810: <end></end>
9811:
9812: <password></password> for scope type = guest
9813:
9814: <domain></domain> for scope type = course or group
9815: <number></number>
9816: <roles id="">
9817: <role></role>
9818: <access></access>
9819: <section></section>
9820: <group></group>
9821: </roles>
9822:
9823: <dom></dom> for scope type = domains
9824:
9825: <users> for scope type = users
9826: <user>
9827: <uname></uname>
9828: <udom></udom>
9829: </user>
9830: </users>
9831: </scope>
9832:
9833: Access data is also aggregated for each file in an additional key=value pair:
9834: key -> path to file/file_name\0accesscontrol
9835: value -> reference to hash
9836: hash contains key = value pairs
9837: where key = uniqueID:scope_end_start
9838: value = UNIX time record was last updated
9839:
9840: Used to improve speed of look-ups of access controls for each file.
9841:
9842: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
9843:
9844: modify_access_controls():
9845:
9846: Modifies access controls for a portfolio file
9847: Args
9848: 1. file name
9849: 2. reference to hash of required changes,
9850: 3. domain
9851: 4. username
9852: where domain,username are the domain of the portfolio owner
9853: (either a user or a course)
9854:
9855: Returns:
9856: 1. result of additions or updates ('ok' or 'error', with error message).
9857: 2. result of deletions ('ok' or 'error', with error message).
9858: 3. reference to hash of any new or updated access controls.
9859: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
9860: key = integer (inbound ID)
9861: value = uniqueID
9862:
9863: =back
9864:
9865: =head2 HTTP Helper Routines
9866:
9867: =over 4
9868:
9869: =item *
9870:
9871: escape() : unpack non-word characters into CGI-compatible hex codes
9872:
9873: =item *
9874:
9875: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
9876:
9877: =back
9878:
9879: =head1 PRIVATE SUBROUTINES
9880:
9881: =head2 Underlying communication routines (Shouldn't call)
9882:
9883: =over 4
9884:
9885: =item *
9886:
9887: subreply() : tries to pass a message to lonc, returns con_lost if incapable
9888:
9889: =item *
9890:
9891: reply() : uses subreply to send a message to remote machine, logs all failures
9892:
9893: =item *
9894:
9895: critical() : passes a critical message to another server; if cannot
9896: get through then place message in connection buffer directory and
9897: returns con_delayed, if incapable of saving message, returns
9898: con_failed
9899:
9900: =item *
9901:
9902: reconlonc() : tries to reconnect lonc client processes.
9903:
9904: =back
9905:
9906: =head2 Resource Access Logging
9907:
9908: =over 4
9909:
9910: =item *
9911:
9912: flushcourselogs() : flush (save) buffer logs and access logs
9913:
9914: =item *
9915:
9916: courselog($what) : save message for course in hash
9917:
9918: =item *
9919:
9920: courseacclog($what) : save message for course using &courselog(). Perform
9921: special processing for specific resource types (problems, exams, quizzes, etc).
9922:
9923: =item *
9924:
9925: goodbye() : flush course logs and log shutting down; it is called in srm.conf
9926: as a PerlChildExitHandler
9927:
9928: =back
9929:
9930: =head2 Other
9931:
9932: =over 4
9933:
9934: =item *
9935:
9936: symblist($mapname,%newhash) : update symbolic storage links
9937:
9938: =back
9939:
9940: =cut
9941:
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