File:
[LON-CAPA] /
loncom /
lonnet /
perl /
lonnet.pm
Revision
1.947:
download - view:
text,
annotated -
select for diffs
Sun Mar 9 17:22:21 2008 UTC (16 years, 4 months ago) by
raeburn
Branches:
MAIN
CVS tags:
HEAD
Allow a user to selfenroll with a student role.
- Added additional argument to &modify_student_enrollment() - selfenroll flag.
- Additional argumnet added to &assignrole() - selfenroll flag
- If $selfenrollflag evaluates to true, and role being added is a student role for the current user, a response from the &allowed() check is reset to ''.
1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.947 2008/03/09 17:22:21 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: package Apache::lonnet;
31:
32: use strict;
33: use LWP::UserAgent();
34: use HTTP::Date;
35: # use Date::Parse;
36: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
37: $_64bit %env);
38:
39: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
40: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
41: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
42: %courseownerbuf, %coursetypebuf);
43:
44: use IO::Socket;
45: use GDBM_File;
46: use HTML::LCParser;
47: use Fcntl qw(:flock);
48: use Storable qw(thaw nfreeze);
49: use Time::HiRes qw( gettimeofday tv_interval );
50: use Cache::Memcached;
51: use Digest::MD5;
52: use Math::Random;
53: use LONCAPA qw(:DEFAULT :match);
54: use LONCAPA::Configuration;
55:
56: my $readit;
57: my $max_connection_retries = 10; # Or some such value.
58:
59: require Exporter;
60:
61: our @ISA = qw (Exporter);
62: our @EXPORT = qw(%env);
63:
64: =pod
65:
66: =head1 Package Variables
67:
68: These are largely undocumented, so if you decipher one please note it here.
69:
70: =over 4
71:
72: =item $processmarker
73:
74: Contains the time this process was started and this servers host id.
75:
76: =item $dumpcount
77:
78: Counts the number of times a message log flush has been attempted (regardless
79: of success) by this process. Used as part of the filename when messages are
80: delayed.
81:
82: =back
83:
84: =cut
85:
86:
87: # --------------------------------------------------------------------- Logging
88: {
89: my $logid;
90: sub instructor_log {
91: my ($hash_name,$storehash,$delflag,$uname,$udom)=@_;
92: $logid++;
93: my $id=time().'00000'.$$.'00000'.$logid;
94: return &Apache::lonnet::put('nohist_'.$hash_name,
95: { $id => {
96: 'exe_uname' => $env{'user.name'},
97: 'exe_udom' => $env{'user.domain'},
98: 'exe_time' => time(),
99: 'exe_ip' => $ENV{'REMOTE_ADDR'},
100: 'delflag' => $delflag,
101: 'logentry' => $storehash,
102: 'uname' => $uname,
103: 'udom' => $udom,
104: }
105: },
106: $env{'course.'.$env{'request.course.id'}.'.domain'},
107: $env{'course.'.$env{'request.course.id'}.'.num'}
108: );
109: }
110: }
111:
112: sub logtouch {
113: my $execdir=$perlvar{'lonDaemons'};
114: unless (-e "$execdir/logs/lonnet.log") {
115: open(my $fh,">>$execdir/logs/lonnet.log");
116: close $fh;
117: }
118: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
119: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
120: }
121:
122: sub logthis {
123: my $message=shift;
124: my $execdir=$perlvar{'lonDaemons'};
125: my $now=time;
126: my $local=localtime($now);
127: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
128: print $fh "$local ($$): $message\n";
129: close($fh);
130: }
131: return 1;
132: }
133:
134: sub logperm {
135: my $message=shift;
136: my $execdir=$perlvar{'lonDaemons'};
137: my $now=time;
138: my $local=localtime($now);
139: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
140: print $fh "$now:$message:$local\n";
141: close($fh);
142: }
143: return 1;
144: }
145:
146: sub create_connection {
147: my ($hostname,$lonid) = @_;
148: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
149: Type => SOCK_STREAM,
150: Timeout => 10);
151: return 0 if (!$client);
152: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
153: my $result = <$client>;
154: chomp($result);
155: return 1 if ($result eq 'done');
156: return 0;
157: }
158:
159:
160: # -------------------------------------------------- Non-critical communication
161: sub subreply {
162: my ($cmd,$server)=@_;
163: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
164: #
165: # With loncnew process trimming, there's a timing hole between lonc server
166: # process exit and the master server picking up the listen on the AF_UNIX
167: # socket. In that time interval, a lock file will exist:
168:
169: my $lockfile=$peerfile.".lock";
170: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
171: sleep(1);
172: }
173: # At this point, either a loncnew parent is listening or an old lonc
174: # or loncnew child is listening so we can connect or everything's dead.
175: #
176: # We'll give the connection a few tries before abandoning it. If
177: # connection is not possible, we'll con_lost back to the client.
178: #
179: my $client;
180: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
181: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
182: Type => SOCK_STREAM,
183: Timeout => 10);
184: if ($client) {
185: last; # Connected!
186: } else {
187: &create_connection(&hostname($server),$server);
188: }
189: sleep(1); # Try again later if failed connection.
190: }
191: my $answer;
192: if ($client) {
193: print $client "sethost:$server:$cmd\n";
194: $answer=<$client>;
195: if (!$answer) { $answer="con_lost"; }
196: chomp($answer);
197: } else {
198: $answer = 'con_lost'; # Failed connection.
199: }
200: return $answer;
201: }
202:
203: sub reply {
204: my ($cmd,$server)=@_;
205: unless (defined(&hostname($server))) { return 'no_such_host'; }
206: my $answer=subreply($cmd,$server);
207: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
208: &logthis("<font color=\"blue\">WARNING:".
209: " $cmd to $server returned $answer</font>");
210: }
211: return $answer;
212: }
213:
214: # ----------------------------------------------------------- Send USR1 to lonc
215:
216: sub reconlonc {
217: my ($lonid) = @_;
218: my $hostname = &hostname($lonid);
219: if ($lonid) {
220: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
221: if ($hostname && -e $peerfile) {
222: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
223: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
224: Type => SOCK_STREAM,
225: Timeout => 10);
226: if ($client) {
227: print $client ("reset_retries\n");
228: my $answer=<$client>;
229: #reset just this one.
230: }
231: }
232: return;
233: }
234:
235: &logthis("Trying to reconnect lonc");
236: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
237: if (open(my $fh,"<$loncfile")) {
238: my $loncpid=<$fh>;
239: chomp($loncpid);
240: if (kill 0 => $loncpid) {
241: &logthis("lonc at pid $loncpid responding, sending USR1");
242: kill USR1 => $loncpid;
243: sleep 1;
244: } else {
245: &logthis(
246: "<font color=\"blue\">WARNING:".
247: " lonc at pid $loncpid not responding, giving up</font>");
248: }
249: } else {
250: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
251: }
252: }
253:
254: # ------------------------------------------------------ Critical communication
255:
256: sub critical {
257: my ($cmd,$server)=@_;
258: unless (&hostname($server)) {
259: &logthis("<font color=\"blue\">WARNING:".
260: " Critical message to unknown server ($server)</font>");
261: return 'no_such_host';
262: }
263: my $answer=reply($cmd,$server);
264: if ($answer eq 'con_lost') {
265: &reconlonc("$perlvar{'lonSockDir'}/$server");
266: my $answer=reply($cmd,$server);
267: if ($answer eq 'con_lost') {
268: my $now=time;
269: my $middlename=$cmd;
270: $middlename=substr($middlename,0,16);
271: $middlename=~s/\W//g;
272: my $dfilename=
273: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
274: $dumpcount++;
275: {
276: my $dfh;
277: if (open($dfh,">$dfilename")) {
278: print $dfh "$cmd\n";
279: close($dfh);
280: }
281: }
282: sleep 2;
283: my $wcmd='';
284: {
285: my $dfh;
286: if (open($dfh,"<$dfilename")) {
287: $wcmd=<$dfh>;
288: close($dfh);
289: }
290: }
291: chomp($wcmd);
292: if ($wcmd eq $cmd) {
293: &logthis("<font color=\"blue\">WARNING: ".
294: "Connection buffer $dfilename: $cmd</font>");
295: &logperm("D:$server:$cmd");
296: return 'con_delayed';
297: } else {
298: &logthis("<font color=\"red\">CRITICAL:"
299: ." Critical connection failed: $server $cmd</font>");
300: &logperm("F:$server:$cmd");
301: return 'con_failed';
302: }
303: }
304: }
305: return $answer;
306: }
307:
308: # ------------------------------------------- check if return value is an error
309:
310: sub error {
311: my ($result) = @_;
312: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
313: if ($2 == 2) { return undef; }
314: return $1;
315: }
316: return undef;
317: }
318:
319: sub convert_and_load_session_env {
320: my ($lonidsdir,$handle)=@_;
321: my @profile;
322: {
323: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
324: if (!$opened) {
325: return 0;
326: }
327: flock($idf,LOCK_SH);
328: @profile=<$idf>;
329: close($idf);
330: }
331: my %temp_env;
332: foreach my $line (@profile) {
333: if ($line !~ m/=/) {
334: return 0;
335: }
336: chomp($line);
337: my ($envname,$envvalue)=split(/=/,$line,2);
338: $temp_env{&unescape($envname)} = &unescape($envvalue);
339: }
340: unlink("$lonidsdir/$handle.id");
341: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
342: 0640)) {
343: %disk_env = %temp_env;
344: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
345: untie(%disk_env);
346: }
347: return 1;
348: }
349:
350: # ------------------------------------------- Transfer profile into environment
351: my $env_loaded;
352: sub transfer_profile_to_env {
353: my ($lonidsdir,$handle,$force_transfer) = @_;
354: if (!$force_transfer && $env_loaded) { return; }
355:
356: if (!defined($lonidsdir)) {
357: $lonidsdir = $perlvar{'lonIDsDir'};
358: }
359: if (!defined($handle)) {
360: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
361: }
362:
363: my $convert;
364: {
365: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
366: if (!$opened) {
367: return;
368: }
369: flock($idf,LOCK_SH);
370: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
371: &GDBM_READER(),0640)) {
372: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
373: untie(%disk_env);
374: } else {
375: $convert = 1;
376: }
377: }
378: if ($convert) {
379: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
380: &logthis("Failed to load session, or convert session.");
381: }
382: }
383:
384: my %remove;
385: while ( my $envname = each(%env) ) {
386: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
387: if ($time < time-300) {
388: $remove{$key}++;
389: }
390: }
391: }
392:
393: $env{'user.environment'} = "$lonidsdir/$handle.id";
394: $env_loaded=1;
395: foreach my $expired_key (keys(%remove)) {
396: &delenv($expired_key);
397: }
398: }
399:
400: # ---------------------------------------------------- Check for valid session
401: sub check_for_valid_session {
402: my ($r) = @_;
403: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
404: my $lonid=$cookies{'lonID'};
405: return undef if (!$lonid);
406:
407: my $handle=&LONCAPA::clean_handle($lonid->value);
408: my $lonidsdir=$r->dir_config('lonIDsDir');
409: return undef if (!-e "$lonidsdir/$handle.id");
410:
411: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
412: return undef if (!$opened);
413:
414: flock($idf,LOCK_SH);
415: my %disk_env;
416: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
417: &GDBM_READER(),0640)) {
418: return undef;
419: }
420:
421: if (!defined($disk_env{'user.name'})
422: || !defined($disk_env{'user.domain'})) {
423: return undef;
424: }
425: return $handle;
426: }
427:
428: sub timed_flock {
429: my ($file,$lock_type) = @_;
430: my $failed=0;
431: eval {
432: local $SIG{__DIE__}='DEFAULT';
433: local $SIG{ALRM}=sub {
434: $failed=1;
435: die("failed lock");
436: };
437: alarm(13);
438: flock($file,$lock_type);
439: alarm(0);
440: };
441: if ($failed) {
442: return undef;
443: } else {
444: return 1;
445: }
446: }
447:
448: # ---------------------------------------------------------- Append Environment
449:
450: sub appenv {
451: my %newenv=@_;
452: foreach my $key (keys(%newenv)) {
453: if (($newenv{$key}=~/^user\.role/) || ($newenv{$key}=~/^user\.priv/)) {
454: &logthis("<font color=\"blue\">WARNING: ".
455: "Attempt to modify environment ".$key." to ".$newenv{$key}
456: .'</font>');
457: delete($newenv{$key});
458: } else {
459: $env{$key}=$newenv{$key};
460: }
461: }
462: my $opened = open(my $env_file,'+<',$env{'user.environment'});
463: if ($opened
464: && &timed_flock($env_file,LOCK_EX)
465: &&
466: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
467: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
468: while (my ($key,$value) = each(%newenv)) {
469: $disk_env{$key} = $value;
470: }
471: untie(%disk_env);
472: }
473: return 'ok';
474: }
475: # ----------------------------------------------------- Delete from Environment
476:
477: sub delenv {
478: my $delthis=shift;
479: if (($delthis=~/user\.role/) || ($delthis=~/user\.priv/)) {
480: &logthis("<font color=\"blue\">WARNING: ".
481: "Attempt to delete from environment ".$delthis);
482: return 'error';
483: }
484: my $opened = open(my $env_file,'+<',$env{'user.environment'});
485: if ($opened
486: && &timed_flock($env_file,LOCK_EX)
487: &&
488: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
489: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
490: foreach my $key (keys(%disk_env)) {
491: if ($key=~/^$delthis/) {
492: delete($env{$key});
493: delete($disk_env{$key});
494: }
495: }
496: untie(%disk_env);
497: }
498: return 'ok';
499: }
500:
501: sub get_env_multiple {
502: my ($name) = @_;
503: my @values;
504: if (defined($env{$name})) {
505: # exists is it an array
506: if (ref($env{$name})) {
507: @values=@{ $env{$name} };
508: } else {
509: $values[0]=$env{$name};
510: }
511: }
512: return(@values);
513: }
514:
515: # ------------------------------------------ Find out current server userload
516: sub userload {
517: my $numusers=0;
518: {
519: opendir(LONIDS,$perlvar{'lonIDsDir'});
520: my $filename;
521: my $curtime=time;
522: while ($filename=readdir(LONIDS)) {
523: next if ($filename eq '.' || $filename eq '..');
524: next if ($filename =~ /publicuser_\d+\.id/);
525: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
526: if ($curtime-$mtime < 1800) { $numusers++; }
527: }
528: closedir(LONIDS);
529: }
530: my $userloadpercent=0;
531: my $maxuserload=$perlvar{'lonUserLoadLim'};
532: if ($maxuserload) {
533: $userloadpercent=100*$numusers/$maxuserload;
534: }
535: $userloadpercent=sprintf("%.2f",$userloadpercent);
536: return $userloadpercent;
537: }
538:
539: # ------------------------------------------ Fight off request when overloaded
540:
541: sub overloaderror {
542: my ($r,$checkserver)=@_;
543: unless ($checkserver) { $checkserver=$perlvar{'lonHostID'}; }
544: my $loadavg;
545: if ($checkserver eq $perlvar{'lonHostID'}) {
546: open(my $loadfile,'/proc/loadavg');
547: $loadavg=<$loadfile>;
548: $loadavg =~ s/\s.*//g;
549: $loadavg = 100*$loadavg/$perlvar{'lonLoadLim'};
550: close($loadfile);
551: } else {
552: $loadavg=&reply('load',$checkserver);
553: }
554: my $overload=$loadavg-100;
555: if ($overload>0) {
556: $r->err_headers_out->{'Retry-After'}=$overload;
557: $r->log_error('Overload of '.$overload.' on '.$checkserver);
558: return 413;
559: }
560: return '';
561: }
562:
563: # ------------------------------ Find server with least workload from spare.tab
564:
565: sub spareserver {
566: my ($loadpercent,$userloadpercent,$want_server_name) = @_;
567: my $spare_server;
568: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
569: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
570: : $userloadpercent;
571:
572: foreach my $try_server (@{ $spareid{'primary'} }) {
573: ($spare_server, $lowest_load) =
574: &compare_server_load($try_server, $spare_server, $lowest_load);
575: }
576:
577: my $found_server = ($spare_server ne '' && $lowest_load < 100);
578:
579: if (!$found_server) {
580: foreach my $try_server (@{ $spareid{'default'} }) {
581: ($spare_server, $lowest_load) =
582: &compare_server_load($try_server, $spare_server, $lowest_load);
583: }
584: }
585:
586: if (!$want_server_name) {
587: $spare_server="http://".&hostname($spare_server);
588: }
589: return $spare_server;
590: }
591:
592: sub compare_server_load {
593: my ($try_server, $spare_server, $lowest_load) = @_;
594:
595: my $loadans = &reply('load', $try_server);
596: my $userloadans = &reply('userload',$try_server);
597:
598: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
599: next; #didn't get a number from the server
600: }
601:
602: my $load;
603: if ($loadans =~ /\d/) {
604: if ($userloadans =~ /\d/) {
605: #both are numbers, pick the bigger one
606: $load = ($loadans > $userloadans) ? $loadans
607: : $userloadans;
608: } else {
609: $load = $loadans;
610: }
611: } else {
612: $load = $userloadans;
613: }
614:
615: if (($load =~ /\d/) && ($load < $lowest_load)) {
616: $spare_server = $try_server;
617: $lowest_load = $load;
618: }
619: return ($spare_server,$lowest_load);
620: }
621:
622: # --------------------------- ask offload servers if user already has a session
623: sub find_existing_session {
624: my ($udom,$uname) = @_;
625: foreach my $try_server (@{ $spareid{'primary'} },
626: @{ $spareid{'default'} }) {
627: return $try_server if (&has_user_session($try_server, $udom, $uname));
628: }
629: return;
630: }
631:
632: # -------------------------------- ask if server already has a session for user
633: sub has_user_session {
634: my ($lonid,$udom,$uname) = @_;
635: my $result = &reply(join(':','userhassession',
636: map {&escape($_)} ($udom,$uname)),$lonid);
637: return 1 if ($result eq 'ok');
638:
639: return 0;
640: }
641:
642: # --------------------------------------------- Try to change a user's password
643:
644: sub changepass {
645: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
646: $currentpass = &escape($currentpass);
647: $newpass = &escape($newpass);
648: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context",
649: $server);
650: if (! $answer) {
651: &logthis("No reply on password change request to $server ".
652: "by $uname in domain $udom.");
653: } elsif ($answer =~ "^ok") {
654: &logthis("$uname in $udom successfully changed their password ".
655: "on $server.");
656: } elsif ($answer =~ "^pwchange_failure") {
657: &logthis("$uname in $udom was unable to change their password ".
658: "on $server. The action was blocked by either lcpasswd ".
659: "or pwchange");
660: } elsif ($answer =~ "^non_authorized") {
661: &logthis("$uname in $udom did not get their password correct when ".
662: "attempting to change it on $server.");
663: } elsif ($answer =~ "^auth_mode_error") {
664: &logthis("$uname in $udom attempted to change their password despite ".
665: "not being locally or internally authenticated on $server.");
666: } elsif ($answer =~ "^unknown_user") {
667: &logthis("$uname in $udom attempted to change their password ".
668: "on $server but were unable to because $server is not ".
669: "their home server.");
670: } elsif ($answer =~ "^refused") {
671: &logthis("$server refused to change $uname in $udom password because ".
672: "it was sent an unencrypted request to change the password.");
673: }
674: return $answer;
675: }
676:
677: # ----------------------- Try to determine user's current authentication scheme
678:
679: sub queryauthenticate {
680: my ($uname,$udom)=@_;
681: my $uhome=&homeserver($uname,$udom);
682: if (!$uhome) {
683: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
684: return 'no_host';
685: }
686: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
687: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
688: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
689: }
690: return $answer;
691: }
692:
693: # --------- Try to authenticate user from domain's lib servers (first this one)
694:
695: sub authenticate {
696: my ($uname,$upass,$udom)=@_;
697: $upass=&escape($upass);
698: $uname= &LONCAPA::clean_username($uname);
699: my $uhome=&homeserver($uname,$udom,1);
700: if ((!$uhome) || ($uhome eq 'no_host')) {
701: # Maybe the machine was offline and only re-appeared again recently?
702: &reconlonc();
703: # One more
704: my $uhome=&homeserver($uname,$udom,1);
705: if ((!$uhome) || ($uhome eq 'no_host')) {
706: &logthis("User $uname at $udom is unknown in authenticate");
707: }
708: return 'no_host';
709: }
710: my $answer=reply("encrypt:auth:$udom:$uname:$upass",$uhome);
711: if ($answer eq 'authorized') {
712: &logthis("User $uname at $udom authorized by $uhome");
713: return $uhome;
714: }
715: if ($answer eq 'non_authorized') {
716: &logthis("User $uname at $udom rejected by $uhome");
717: return 'no_host';
718: }
719: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
720: return 'no_host';
721: }
722:
723: # ---------------------- Find the homebase for a user from domain's lib servers
724:
725: my %homecache;
726: sub homeserver {
727: my ($uname,$udom,$ignoreBadCache)=@_;
728: my $index="$uname:$udom";
729:
730: if (exists($homecache{$index})) { return $homecache{$index}; }
731:
732: my %servers = &get_servers($udom,'library');
733: foreach my $tryserver (keys(%servers)) {
734: next if ($ignoreBadCache ne 'true' &&
735: exists($badServerCache{$tryserver}));
736:
737: my $answer=reply("home:$udom:$uname",$tryserver);
738: if ($answer eq 'found') {
739: delete($badServerCache{$tryserver});
740: return $homecache{$index}=$tryserver;
741: } elsif ($answer eq 'no_host') {
742: $badServerCache{$tryserver}=1;
743: }
744: }
745: return 'no_host';
746: }
747:
748: # ------------------------------------- Find the usernames behind a list of IDs
749:
750: sub idget {
751: my ($udom,@ids)=@_;
752: my %returnhash=();
753:
754: my %servers = &get_servers($udom,'library');
755: foreach my $tryserver (keys(%servers)) {
756: my $idlist=join('&',@ids);
757: $idlist=~tr/A-Z/a-z/;
758: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
759: my @answer=();
760: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
761: @answer=split(/\&/,$reply);
762: } ;
763: my $i;
764: for ($i=0;$i<=$#ids;$i++) {
765: if ($answer[$i]) {
766: $returnhash{$ids[$i]}=$answer[$i];
767: }
768: }
769: }
770: return %returnhash;
771: }
772:
773: # ------------------------------------- Find the IDs behind a list of usernames
774:
775: sub idrget {
776: my ($udom,@unames)=@_;
777: my %returnhash=();
778: foreach my $uname (@unames) {
779: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
780: }
781: return %returnhash;
782: }
783:
784: # ------------------------------- Store away a list of names and associated IDs
785:
786: sub idput {
787: my ($udom,%ids)=@_;
788: my %servers=();
789: foreach my $uname (keys(%ids)) {
790: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
791: my $uhom=&homeserver($uname,$udom);
792: if ($uhom ne 'no_host') {
793: my $id=&escape($ids{$uname});
794: $id=~tr/A-Z/a-z/;
795: my $esc_unam=&escape($uname);
796: if ($servers{$uhom}) {
797: $servers{$uhom}.='&'.$id.'='.$esc_unam;
798: } else {
799: $servers{$uhom}=$id.'='.$esc_unam;
800: }
801: }
802: }
803: foreach my $server (keys(%servers)) {
804: &critical('idput:'.$udom.':'.$servers{$server},$server);
805: }
806: }
807:
808: # ------------------------------------------- get items from domain db files
809:
810: sub get_dom {
811: my ($namespace,$storearr,$udom,$uhome)=@_;
812: my $items='';
813: foreach my $item (@$storearr) {
814: $items.=&escape($item).'&';
815: }
816: $items=~s/\&$//;
817: if (!$udom) {
818: $udom=$env{'user.domain'};
819: if (defined(&domain($udom,'primary'))) {
820: $uhome=&domain($udom,'primary');
821: } else {
822: undef($uhome);
823: }
824: } else {
825: if (!$uhome) {
826: if (defined(&domain($udom,'primary'))) {
827: $uhome=&domain($udom,'primary');
828: }
829: }
830: }
831: if ($udom && $uhome && ($uhome ne 'no_host')) {
832: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
833: my %returnhash;
834: if ($rep eq '' || $rep =~ /^error: 2 /) {
835: return %returnhash;
836: }
837: my @pairs=split(/\&/,$rep);
838: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
839: return @pairs;
840: }
841: my $i=0;
842: foreach my $item (@$storearr) {
843: $returnhash{$item}=&thaw_unescape($pairs[$i]);
844: $i++;
845: }
846: return %returnhash;
847: } else {
848: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
849: }
850: }
851:
852: # -------------------------------------------- put items in domain db files
853:
854: sub put_dom {
855: my ($namespace,$storehash,$udom,$uhome)=@_;
856: if (!$udom) {
857: $udom=$env{'user.domain'};
858: if (defined(&domain($udom,'primary'))) {
859: $uhome=&domain($udom,'primary');
860: } else {
861: undef($uhome);
862: }
863: } else {
864: if (!$uhome) {
865: if (defined(&domain($udom,'primary'))) {
866: $uhome=&domain($udom,'primary');
867: }
868: }
869: }
870: if ($udom && $uhome && ($uhome ne 'no_host')) {
871: my $items='';
872: foreach my $item (keys(%$storehash)) {
873: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
874: }
875: $items=~s/\&$//;
876: return &reply("putdom:$udom:$namespace:$items",$uhome);
877: } else {
878: &logthis("put_dom failed - no homeserver and/or domain");
879: }
880: }
881:
882: sub retrieve_inst_usertypes {
883: my ($udom) = @_;
884: my (%returnhash,@order);
885: if (defined(&domain($udom,'primary'))) {
886: my $uhome=&domain($udom,'primary');
887: my $rep=&reply("inst_usertypes:$udom",$uhome);
888: my ($hashitems,$orderitems) = split(/:/,$rep);
889: my @pairs=split(/\&/,$hashitems);
890: foreach my $item (@pairs) {
891: my ($key,$value)=split(/=/,$item,2);
892: $key = &unescape($key);
893: next if ($key =~ /^error: 2 /);
894: $returnhash{$key}=&thaw_unescape($value);
895: }
896: my @esc_order = split(/\&/,$orderitems);
897: foreach my $item (@esc_order) {
898: push(@order,&unescape($item));
899: }
900: } else {
901: &logthis("get_dom failed - no primary domain server for $udom");
902: }
903: return (\%returnhash,\@order);
904: }
905:
906: sub is_domainimage {
907: my ($url) = @_;
908: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
909: if (&domain($1) ne '') {
910: return '1';
911: }
912: }
913: return;
914: }
915:
916: sub inst_directory_query {
917: my ($srch) = @_;
918: my $udom = $srch->{'srchdomain'};
919: my %results;
920: my $homeserver = &domain($udom,'primary');
921: my $outcome;
922: if ($homeserver ne '') {
923: my $queryid=&reply("querysend:instdirsearch:".
924: &escape($srch->{'srchby'}).':'.
925: &escape($srch->{'srchterm'}).':'.
926: &escape($srch->{'srchtype'}),$homeserver);
927: my $host=&hostname($homeserver);
928: if ($queryid !~/^\Q$host\E\_/) {
929: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
930: return;
931: }
932: my $response = &get_query_reply($queryid);
933: my $maxtries = 5;
934: my $tries = 1;
935: while (($response=~/^timeout/) && ($tries < $maxtries)) {
936: $response = &get_query_reply($queryid);
937: $tries ++;
938: }
939:
940: if (!&error($response) && $response ne 'refused') {
941: if ($response eq 'unavailable') {
942: $outcome = $response;
943: } else {
944: $outcome = 'ok';
945: my @matches = split(/\n/,$response);
946: foreach my $match (@matches) {
947: my ($key,$value) = split(/=/,$match);
948: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
949: }
950: }
951: }
952: }
953: return ($outcome,%results);
954: }
955:
956: sub usersearch {
957: my ($srch) = @_;
958: my $dom = $srch->{'srchdomain'};
959: my %results;
960: my %libserv = &all_library();
961: my $query = 'usersearch';
962: foreach my $tryserver (keys(%libserv)) {
963: if (&host_domain($tryserver) eq $dom) {
964: my $host=&hostname($tryserver);
965: my $queryid=
966: &reply("querysend:".&escape($query).':'.
967: &escape($srch->{'srchby'}).':'.
968: &escape($srch->{'srchtype'}).':'.
969: &escape($srch->{'srchterm'}),$tryserver);
970: if ($queryid !~/^\Q$host\E\_/) {
971: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
972: next;
973: }
974: my $reply = &get_query_reply($queryid);
975: my $maxtries = 1;
976: my $tries = 1;
977: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
978: $reply = &get_query_reply($queryid);
979: $tries ++;
980: }
981: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
982: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
983: } else {
984: my @matches;
985: if ($reply =~ /\n/) {
986: @matches = split(/\n/,$reply);
987: } else {
988: @matches = split(/\&/,$reply);
989: }
990: foreach my $match (@matches) {
991: my ($uname,$udom,%userhash);
992: foreach my $entry (split(/:/,$match)) {
993: my ($key,$value) =
994: map {&unescape($_);} split(/=/,$entry);
995: $userhash{$key} = $value;
996: if ($key eq 'username') {
997: $uname = $value;
998: } elsif ($key eq 'domain') {
999: $udom = $value;
1000: }
1001: }
1002: $results{$uname.':'.$udom} = \%userhash;
1003: }
1004: }
1005: }
1006: }
1007: return %results;
1008: }
1009:
1010: sub get_instuser {
1011: my ($udom,$uname,$id) = @_;
1012: my $homeserver = &domain($udom,'primary');
1013: my ($outcome,%results);
1014: if ($homeserver ne '') {
1015: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1016: &escape($id).':'.&escape($udom),$homeserver);
1017: my $host=&hostname($homeserver);
1018: if ($queryid !~/^\Q$host\E\_/) {
1019: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1020: return;
1021: }
1022: my $response = &get_query_reply($queryid);
1023: my $maxtries = 5;
1024: my $tries = 1;
1025: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1026: $response = &get_query_reply($queryid);
1027: $tries ++;
1028: }
1029: if (!&error($response) && $response ne 'refused') {
1030: if ($response eq 'unavailable') {
1031: $outcome = $response;
1032: } else {
1033: $outcome = 'ok';
1034: my @matches = split(/\n/,$response);
1035: foreach my $match (@matches) {
1036: my ($key,$value) = split(/=/,$match);
1037: $results{&unescape($key)} = &thaw_unescape($value);
1038: }
1039: }
1040: }
1041: }
1042: my %userinfo;
1043: if (ref($results{$uname}) eq 'HASH') {
1044: %userinfo = %{$results{$uname}};
1045: }
1046: return ($outcome,%userinfo);
1047: }
1048:
1049: sub inst_rulecheck {
1050: my ($udom,$uname,$id,$item,$rules) = @_;
1051: my %returnhash;
1052: if ($udom ne '') {
1053: if (ref($rules) eq 'ARRAY') {
1054: @{$rules} = map {&escape($_);} (@{$rules});
1055: my $rulestr = join(':',@{$rules});
1056: my $homeserver=&domain($udom,'primary');
1057: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1058: my $response;
1059: if ($item eq 'username') {
1060: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1061: ':'.&escape($uname).':'.$rulestr,
1062: $homeserver));
1063: } elsif ($item eq 'id') {
1064: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1065: ':'.&escape($id).':'.$rulestr,
1066: $homeserver));
1067: } elsif ($item eq 'selfcreate') {
1068: $response=&unescape(&reply('instselfcreatecheck:'.
1069: &escape($udom).':'.&escape($uname).
1070: ':'.$rulestr,$homeserver));
1071: }
1072: if ($response ne 'refused') {
1073: my @pairs=split(/\&/,$response);
1074: foreach my $item (@pairs) {
1075: my ($key,$value)=split(/=/,$item,2);
1076: $key = &unescape($key);
1077: next if ($key =~ /^error: 2 /);
1078: $returnhash{$key}=&thaw_unescape($value);
1079: }
1080: }
1081: }
1082: }
1083: }
1084: return %returnhash;
1085: }
1086:
1087: sub inst_userrules {
1088: my ($udom,$check) = @_;
1089: my (%ruleshash,@ruleorder);
1090: if ($udom ne '') {
1091: my $homeserver=&domain($udom,'primary');
1092: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1093: my $response;
1094: if ($check eq 'id') {
1095: $response=&reply('instidrules:'.&escape($udom),
1096: $homeserver);
1097: } elsif ($check eq 'email') {
1098: $response=&reply('instemailrules:'.&escape($udom),
1099: $homeserver);
1100: } else {
1101: $response=&reply('instuserrules:'.&escape($udom),
1102: $homeserver);
1103: }
1104: if (($response ne 'refused') && ($response ne 'error') &&
1105: ($response ne 'unknown_cmd') &&
1106: ($response ne 'no_such_host')) {
1107: my ($hashitems,$orderitems) = split(/:/,$response);
1108: my @pairs=split(/\&/,$hashitems);
1109: foreach my $item (@pairs) {
1110: my ($key,$value)=split(/=/,$item,2);
1111: $key = &unescape($key);
1112: next if ($key =~ /^error: 2 /);
1113: $ruleshash{$key}=&thaw_unescape($value);
1114: }
1115: my @esc_order = split(/\&/,$orderitems);
1116: foreach my $item (@esc_order) {
1117: push(@ruleorder,&unescape($item));
1118: }
1119: }
1120: }
1121: }
1122: return (\%ruleshash,\@ruleorder);
1123: }
1124:
1125: # ------------------------- Get Authentication and Language Defaults for Domain
1126:
1127: sub get_domain_defaults {
1128: my ($domain) = @_;
1129: my $cachetime = 60*60*24;
1130: my ($defauthtype,$defautharg,$deflang);
1131: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1132: if (defined($cached)) {
1133: if (ref($result) eq 'HASH') {
1134: return %{$result};
1135: }
1136: }
1137: my %domdefaults;
1138: my %domconfig =
1139: &Apache::lonnet::get_dom('configuration',['defaults'],$domain);
1140: if (ref($domconfig{'defaults'}) eq 'HASH') {
1141: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
1142: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
1143: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
1144: } else {
1145: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
1146: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
1147: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
1148: }
1149: &Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,
1150: $cachetime);
1151: return %domdefaults;
1152: }
1153:
1154: # --------------------------------------------------- Assign a key to a student
1155:
1156: sub assign_access_key {
1157: #
1158: # a valid key looks like uname:udom#comments
1159: # comments are being appended
1160: #
1161: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
1162: $kdom=
1163: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
1164: $knum=
1165: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
1166: $cdom=
1167: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1168: $cnum=
1169: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1170: $udom=$env{'user.name'} unless (defined($udom));
1171: $uname=$env{'user.domain'} unless (defined($uname));
1172: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
1173: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
1174: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
1175: # assigned to this person
1176: # - this should not happen,
1177: # unless something went wrong
1178: # the first time around
1179: # ready to assign
1180: $logentry=$1.'; '.$logentry;
1181: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
1182: $kdom,$knum) eq 'ok') {
1183: # key now belongs to user
1184: my $envkey='key.'.$cdom.'_'.$cnum;
1185: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
1186: &appenv('environment.'.$envkey => $ckey);
1187: return 'ok';
1188: } else {
1189: return
1190: 'error: Count not permanently assign key, will need to be re-entered later.';
1191: }
1192: } else {
1193: return 'error: Could not assign key, try again later.';
1194: }
1195: } elsif (!$existing{$ckey}) {
1196: # the key does not exist
1197: return 'error: The key does not exist';
1198: } else {
1199: # the key is somebody else's
1200: return 'error: The key is already in use';
1201: }
1202: }
1203:
1204: # ------------------------------------------ put an additional comment on a key
1205:
1206: sub comment_access_key {
1207: #
1208: # a valid key looks like uname:udom#comments
1209: # comments are being appended
1210: #
1211: my ($ckey,$cdom,$cnum,$logentry)=@_;
1212: $cdom=
1213: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1214: $cnum=
1215: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1216: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1217: if ($existing{$ckey}) {
1218: $existing{$ckey}.='; '.$logentry;
1219: # ready to assign
1220: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
1221: $cdom,$cnum) eq 'ok') {
1222: return 'ok';
1223: } else {
1224: return 'error: Count not store comment.';
1225: }
1226: } else {
1227: # the key does not exist
1228: return 'error: The key does not exist';
1229: }
1230: }
1231:
1232: # ------------------------------------------------------ Generate a set of keys
1233:
1234: sub generate_access_keys {
1235: my ($number,$cdom,$cnum,$logentry)=@_;
1236: $cdom=
1237: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1238: $cnum=
1239: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1240: unless (&allowed('mky',$cdom)) { return 0; }
1241: unless (($cdom) && ($cnum)) { return 0; }
1242: if ($number>10000) { return 0; }
1243: sleep(2); # make sure don't get same seed twice
1244: srand(time()^($$+($$<<15))); # from "Programming Perl"
1245: my $total=0;
1246: for (my $i=1;$i<=$number;$i++) {
1247: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
1248: sprintf("%lx",int(100000*rand)).'-'.
1249: sprintf("%lx",int(100000*rand));
1250: $newkey=~s/1/g/g; # folks mix up 1 and l
1251: $newkey=~s/0/h/g; # and also 0 and O
1252: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
1253: if ($existing{$newkey}) {
1254: $i--;
1255: } else {
1256: if (&put('accesskeys',
1257: { $newkey => '# generated '.localtime().
1258: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
1259: '; '.$logentry },
1260: $cdom,$cnum) eq 'ok') {
1261: $total++;
1262: }
1263: }
1264: }
1265: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
1266: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
1267: return $total;
1268: }
1269:
1270: # ------------------------------------------------------- Validate an accesskey
1271:
1272: sub validate_access_key {
1273: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
1274: $cdom=
1275: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1276: $cnum=
1277: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1278: $udom=$env{'user.domain'} unless (defined($udom));
1279: $uname=$env{'user.name'} unless (defined($uname));
1280: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1281: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
1282: }
1283:
1284: # ------------------------------------- Find the section of student in a course
1285: sub devalidate_getsection_cache {
1286: my ($udom,$unam,$courseid)=@_;
1287: my $hashid="$udom:$unam:$courseid";
1288: &devalidate_cache_new('getsection',$hashid);
1289: }
1290:
1291: sub courseid_to_courseurl {
1292: my ($courseid) = @_;
1293: #already url style courseid
1294: return $courseid if ($courseid =~ m{^/});
1295:
1296: if (exists($env{'course.'.$courseid.'.num'})) {
1297: my $cnum = $env{'course.'.$courseid.'.num'};
1298: my $cdom = $env{'course.'.$courseid.'.domain'};
1299: return "/$cdom/$cnum";
1300: }
1301:
1302: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
1303: if (exists($courseinfo{'num'})) {
1304: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
1305: }
1306:
1307: return undef;
1308: }
1309:
1310: sub getsection {
1311: my ($udom,$unam,$courseid)=@_;
1312: my $cachetime=1800;
1313:
1314: my $hashid="$udom:$unam:$courseid";
1315: my ($result,$cached)=&is_cached_new('getsection',$hashid);
1316: if (defined($cached)) { return $result; }
1317:
1318: my %Pending;
1319: my %Expired;
1320: #
1321: # Each role can either have not started yet (pending), be active,
1322: # or have expired.
1323: #
1324: # If there is an active role, we are done.
1325: #
1326: # If there is more than one role which has not started yet,
1327: # choose the one which will start sooner
1328: # If there is one role which has not started yet, return it.
1329: #
1330: # If there is more than one expired role, choose the one which ended last.
1331: # If there is a role which has expired, return it.
1332: #
1333: $courseid = &courseid_to_courseurl($courseid);
1334: my %roleshash = &dump('roles',$udom,$unam,$courseid);
1335: foreach my $key (keys(%roleshash)) {
1336: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
1337: my $section=$1;
1338: if ($key eq $courseid.'_st') { $section=''; }
1339: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
1340: my $now=time;
1341: if (defined($end) && $end && ($now > $end)) {
1342: $Expired{$end}=$section;
1343: next;
1344: }
1345: if (defined($start) && $start && ($now < $start)) {
1346: $Pending{$start}=$section;
1347: next;
1348: }
1349: return &do_cache_new('getsection',$hashid,$section,$cachetime);
1350: }
1351: #
1352: # Presumedly there will be few matching roles from the above
1353: # loop and the sorting time will be negligible.
1354: if (scalar(keys(%Pending))) {
1355: my ($time) = sort {$a <=> $b} keys(%Pending);
1356: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
1357: }
1358: if (scalar(keys(%Expired))) {
1359: my @sorted = sort {$a <=> $b} keys(%Expired);
1360: my $time = pop(@sorted);
1361: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
1362: }
1363: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
1364: }
1365:
1366: sub save_cache {
1367: &purge_remembered();
1368: #&Apache::loncommon::validate_page();
1369: undef(%env);
1370: undef($env_loaded);
1371: }
1372:
1373: my $to_remember=-1;
1374: my %remembered;
1375: my %accessed;
1376: my $kicks=0;
1377: my $hits=0;
1378: sub make_key {
1379: my ($name,$id) = @_;
1380: if (length($id) > 65
1381: && length(&escape($id)) > 200) {
1382: $id=length($id).':'.&Digest::MD5::md5_hex($id);
1383: }
1384: return &escape($name.':'.$id);
1385: }
1386:
1387: sub devalidate_cache_new {
1388: my ($name,$id,$debug) = @_;
1389: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
1390: $id=&make_key($name,$id);
1391: $memcache->delete($id);
1392: delete($remembered{$id});
1393: delete($accessed{$id});
1394: }
1395:
1396: sub is_cached_new {
1397: my ($name,$id,$debug) = @_;
1398: $id=&make_key($name,$id);
1399: if (exists($remembered{$id})) {
1400: if ($debug) { &Apache::lonnet::logthis("Earyl return $id of $remembered{$id} "); }
1401: $accessed{$id}=[&gettimeofday()];
1402: $hits++;
1403: return ($remembered{$id},1);
1404: }
1405: my $value = $memcache->get($id);
1406: if (!(defined($value))) {
1407: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
1408: return (undef,undef);
1409: }
1410: if ($value eq '__undef__') {
1411: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
1412: $value=undef;
1413: }
1414: &make_room($id,$value,$debug);
1415: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
1416: return ($value,1);
1417: }
1418:
1419: sub do_cache_new {
1420: my ($name,$id,$value,$time,$debug) = @_;
1421: $id=&make_key($name,$id);
1422: my $setvalue=$value;
1423: if (!defined($setvalue)) {
1424: $setvalue='__undef__';
1425: }
1426: if (!defined($time) ) {
1427: $time=600;
1428: }
1429: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
1430: my $result = $memcache->set($id,$setvalue,$time);
1431: if (! $result) {
1432: &logthis("caching of id -> $id failed");
1433: $memcache->disconnect_all();
1434: }
1435: # need to make a copy of $value
1436: &make_room($id,$value,$debug);
1437: return $value;
1438: }
1439:
1440: sub make_room {
1441: my ($id,$value,$debug)=@_;
1442:
1443: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
1444: : $value;
1445: if ($to_remember<0) { return; }
1446: $accessed{$id}=[&gettimeofday()];
1447: if (scalar(keys(%remembered)) <= $to_remember) { return; }
1448: my $to_kick;
1449: my $max_time=0;
1450: foreach my $other (keys(%accessed)) {
1451: if (&tv_interval($accessed{$other}) > $max_time) {
1452: $to_kick=$other;
1453: $max_time=&tv_interval($accessed{$other});
1454: }
1455: }
1456: delete($remembered{$to_kick});
1457: delete($accessed{$to_kick});
1458: $kicks++;
1459: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
1460: return;
1461: }
1462:
1463: sub purge_remembered {
1464: #&logthis("Tossing ".scalar(keys(%remembered)));
1465: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
1466: undef(%remembered);
1467: undef(%accessed);
1468: }
1469: # ------------------------------------- Read an entry from a user's environment
1470:
1471: sub userenvironment {
1472: my ($udom,$unam,@what)=@_;
1473: my %returnhash=();
1474: my @answer=split(/\&/,
1475: &reply('get:'.$udom.':'.$unam.':environment:'.join('&',@what),
1476: &homeserver($unam,$udom)));
1477: my $i;
1478: for ($i=0;$i<=$#what;$i++) {
1479: $returnhash{$what[$i]}=&unescape($answer[$i]);
1480: }
1481: return %returnhash;
1482: }
1483:
1484: # ---------------------------------------------------------- Get a studentphoto
1485: sub studentphoto {
1486: my ($udom,$unam,$ext) = @_;
1487: my $home=&Apache::lonnet::homeserver($unam,$udom);
1488: if (defined($env{'request.course.id'})) {
1489: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
1490: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
1491: return(&retrievestudentphoto($udom,$unam,$ext));
1492: } else {
1493: my ($result,$perm_reqd)=
1494: &Apache::lonnet::auto_photo_permission($unam,$udom);
1495: if ($result eq 'ok') {
1496: if (!($perm_reqd eq 'yes')) {
1497: return(&retrievestudentphoto($udom,$unam,$ext));
1498: }
1499: }
1500: }
1501: }
1502: } else {
1503: my ($result,$perm_reqd) =
1504: &Apache::lonnet::auto_photo_permission($unam,$udom);
1505: if ($result eq 'ok') {
1506: if (!($perm_reqd eq 'yes')) {
1507: return(&retrievestudentphoto($udom,$unam,$ext));
1508: }
1509: }
1510: }
1511: return '/adm/lonKaputt/lonlogo_broken.gif';
1512: }
1513:
1514: sub retrievestudentphoto {
1515: my ($udom,$unam,$ext,$type) = @_;
1516: my $home=&Apache::lonnet::homeserver($unam,$udom);
1517: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
1518: if ($ret eq 'ok') {
1519: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
1520: if ($type eq 'thumbnail') {
1521: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
1522: }
1523: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
1524: return $tokenurl;
1525: } else {
1526: if ($type eq 'thumbnail') {
1527: return '/adm/lonKaputt/genericstudent_tn.gif';
1528: } else {
1529: return '/adm/lonKaputt/lonlogo_broken.gif';
1530: }
1531: }
1532: }
1533:
1534: # -------------------------------------------------------------------- New chat
1535:
1536: sub chatsend {
1537: my ($newentry,$anon,$group)=@_;
1538: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1539: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1540: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
1541: &reply('chatsend:'.$cdom.':'.$cnum.':'.
1542: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
1543: &escape($newentry)).':'.$group,$chome);
1544: }
1545:
1546: # ------------------------------------------ Find current version of a resource
1547:
1548: sub getversion {
1549: my $fname=&clutter(shift);
1550: unless ($fname=~/^\/res\//) { return -1; }
1551: return ¤tversion(&filelocation('',$fname));
1552: }
1553:
1554: sub currentversion {
1555: my $fname=shift;
1556: my ($result,$cached)=&is_cached_new('resversion',$fname);
1557: if (defined($cached)) { return $result; }
1558: my $author=$fname;
1559: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1560: my ($udom,$uname)=split(/\//,$author);
1561: my $home=homeserver($uname,$udom);
1562: if ($home eq 'no_host') {
1563: return -1;
1564: }
1565: my $answer=reply("currentversion:$fname",$home);
1566: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1567: return -1;
1568: }
1569: return &do_cache_new('resversion',$fname,$answer,600);
1570: }
1571:
1572: # ----------------------------- Subscribe to a resource, return URL if possible
1573:
1574: sub subscribe {
1575: my $fname=shift;
1576: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
1577: $fname=~s/[\n\r]//g;
1578: my $author=$fname;
1579: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1580: my ($udom,$uname)=split(/\//,$author);
1581: my $home=homeserver($uname,$udom);
1582: if ($home eq 'no_host') {
1583: return 'not_found';
1584: }
1585: my $answer=reply("sub:$fname",$home);
1586: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1587: $answer.=' by '.$home;
1588: }
1589: return $answer;
1590: }
1591:
1592: # -------------------------------------------------------------- Replicate file
1593:
1594: sub repcopy {
1595: my $filename=shift;
1596: $filename=~s/\/+/\//g;
1597: if ($filename=~m|^/home/httpd/html/adm/|) { return 'ok'; }
1598: if ($filename=~m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
1599: if ($filename=~m|^/home/httpd/html/userfiles/| or
1600: $filename=~m -^/*(uploaded|editupload)/-) {
1601: return &repcopy_userfile($filename);
1602: }
1603: $filename=~s/[\n\r]//g;
1604: my $transname="$filename.in.transfer";
1605: # FIXME: this should flock
1606: if ((-e $filename) || (-e $transname)) { return 'ok'; }
1607: my $remoteurl=subscribe($filename);
1608: if ($remoteurl =~ /^con_lost by/) {
1609: &logthis("Subscribe returned $remoteurl: $filename");
1610: return 'unavailable';
1611: } elsif ($remoteurl eq 'not_found') {
1612: #&logthis("Subscribe returned not_found: $filename");
1613: return 'not_found';
1614: } elsif ($remoteurl =~ /^rejected by/) {
1615: &logthis("Subscribe returned $remoteurl: $filename");
1616: return 'forbidden';
1617: } elsif ($remoteurl eq 'directory') {
1618: return 'ok';
1619: } else {
1620: my $author=$filename;
1621: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1622: my ($udom,$uname)=split(/\//,$author);
1623: my $home=homeserver($uname,$udom);
1624: unless ($home eq $perlvar{'lonHostID'}) {
1625: my @parts=split(/\//,$filename);
1626: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
1627: if ($path ne "$perlvar{'lonDocRoot'}/res") {
1628: &logthis("Malconfiguration for replication: $filename");
1629: return 'bad_request';
1630: }
1631: my $count;
1632: for ($count=5;$count<$#parts;$count++) {
1633: $path.="/$parts[$count]";
1634: if ((-e $path)!=1) {
1635: mkdir($path,0777);
1636: }
1637: }
1638: my $ua=new LWP::UserAgent;
1639: my $request=new HTTP::Request('GET',"$remoteurl");
1640: my $response=$ua->request($request,$transname);
1641: if ($response->is_error()) {
1642: unlink($transname);
1643: my $message=$response->status_line;
1644: &logthis("<font color=\"blue\">WARNING:"
1645: ." LWP get: $message: $filename</font>");
1646: return 'unavailable';
1647: } else {
1648: if ($remoteurl!~/\.meta$/) {
1649: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
1650: my $mresponse=$ua->request($mrequest,$filename.'.meta');
1651: if ($mresponse->is_error()) {
1652: unlink($filename.'.meta');
1653: &logthis(
1654: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
1655: }
1656: }
1657: rename($transname,$filename);
1658: return 'ok';
1659: }
1660: }
1661: }
1662: }
1663:
1664: # ------------------------------------------------ Get server side include body
1665: sub ssi_body {
1666: my ($filelink,%form)=@_;
1667: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
1668: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
1669: }
1670: my $output=($filelink=~/^http\:/?&externalssi($filelink):
1671: &ssi($filelink,%form));
1672: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
1673: $output=~s/^.*?\<body[^\>]*\>//si;
1674: $output=~s/\<\/body\s*\>.*?$//si;
1675: return $output;
1676: }
1677:
1678: # --------------------------------------------------------- Server Side Include
1679:
1680: sub absolute_url {
1681: my ($host_name) = @_;
1682: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
1683: if ($host_name eq '') {
1684: $host_name = $ENV{'SERVER_NAME'};
1685: }
1686: return $protocol.$host_name;
1687: }
1688:
1689: #
1690: # Server side include.
1691: # Parameters:
1692: # fn Possibly encrypted resource name/id.
1693: # form Hash that describes how the rendering should be done
1694: # and other things.
1695: # Returns:
1696: # Scalar context: The content of the reply.
1697: # Array context: 2 element list of the content and the full response variable.
1698: #
1699: # Returns:
1700: # The content of the response.
1701: sub ssi {
1702:
1703: my ($fn,%form)=@_;
1704: my $count = scalar(@_);
1705:
1706:
1707: my $ua=new LWP::UserAgent;
1708:
1709: my $request;
1710:
1711: $form{'no_update_last_known'}=1;
1712: &Apache::lonenc::check_encrypt(\$fn);
1713: if (%form) {
1714: $request=new HTTP::Request('POST',&absolute_url().$fn);
1715: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys %form));
1716: } else {
1717: $request=new HTTP::Request('GET',&absolute_url().$fn);
1718: }
1719:
1720: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
1721: my $response=$ua->request($request);
1722: my $status = $response->code;
1723:
1724: if (wantarray) {
1725: return ($response->content, $response);
1726: } else {
1727: return $response->content;
1728: }
1729: }
1730:
1731: sub externalssi {
1732: my ($url)=@_;
1733: my $ua=new LWP::UserAgent;
1734: my $request=new HTTP::Request('GET',$url);
1735: my $response=$ua->request($request);
1736: return $response->content;
1737: }
1738:
1739: # -------------------------------- Allow a /uploaded/ URI to be vouched for
1740:
1741: sub allowuploaded {
1742: my ($srcurl,$url)=@_;
1743: $url=&clutter(&declutter($url));
1744: my $dir=$url;
1745: $dir=~s/\/[^\/]+$//;
1746: my %httpref=();
1747: my $httpurl=&hreflocation('',$url);
1748: $httpref{'httpref.'.$httpurl}=$srcurl;
1749: &Apache::lonnet::appenv(%httpref);
1750: }
1751:
1752: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
1753: # input: action, courseID, current domain, intended
1754: # path to file, source of file, instruction to parse file for objects,
1755: # ref to hash for embedded objects,
1756: # ref to hash for codebase of java objects.
1757: #
1758: # output: url to file (if action was uploaddoc),
1759: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
1760: #
1761: # Allows directory structure to be used within lonUsers/../userfiles/ for a
1762: # course.
1763: #
1764: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1765: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
1766: # course's home server.
1767: #
1768: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
1769: # be copied from $source (current location) to
1770: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1771: # and will then be copied to
1772: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
1773: # course's home server.
1774: #
1775: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1776: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
1777: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1778: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
1779: # in course's home server.
1780: #
1781:
1782: sub process_coursefile {
1783: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase)=@_;
1784: my $fetchresult;
1785: my $home=&homeserver($docuname,$docudom);
1786: if ($action eq 'propagate') {
1787: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1788: $home);
1789: } else {
1790: my $fpath = '';
1791: my $fname = $file;
1792: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
1793: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
1794: my $filepath = &build_filepath($fpath);
1795: if ($action eq 'copy') {
1796: if ($source eq '') {
1797: $fetchresult = 'no source file';
1798: return $fetchresult;
1799: } else {
1800: my $destination = $filepath.'/'.$fname;
1801: rename($source,$destination);
1802: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1803: $home);
1804: }
1805: } elsif ($action eq 'uploaddoc') {
1806: open(my $fh,'>'.$filepath.'/'.$fname);
1807: print $fh $env{'form.'.$source};
1808: close($fh);
1809: if ($parser eq 'parse') {
1810: my $parse_result = &extract_embedded_items($filepath,$fname,$allfiles,$codebase);
1811: unless ($parse_result eq 'ok') {
1812: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
1813: }
1814: }
1815: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1816: $home);
1817: if ($fetchresult eq 'ok') {
1818: return '/uploaded/'.$fpath.'/'.$fname;
1819: } else {
1820: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1821: ' to host '.$home.': '.$fetchresult);
1822: return '/adm/notfound.html';
1823: }
1824: }
1825: }
1826: unless ( $fetchresult eq 'ok') {
1827: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1828: ' to host '.$home.': '.$fetchresult);
1829: }
1830: return $fetchresult;
1831: }
1832:
1833: sub build_filepath {
1834: my ($fpath) = @_;
1835: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
1836: unless ($fpath eq '') {
1837: my @parts=split('/',$fpath);
1838: foreach my $part (@parts) {
1839: $filepath.= '/'.$part;
1840: if ((-e $filepath)!=1) {
1841: mkdir($filepath,0777);
1842: }
1843: }
1844: }
1845: return $filepath;
1846: }
1847:
1848: sub store_edited_file {
1849: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
1850: my $file = $primary_url;
1851: $file =~ s#^/uploaded/$docudom/$docuname/##;
1852: my $fpath = '';
1853: my $fname = $file;
1854: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
1855: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
1856: my $filepath = &build_filepath($fpath);
1857: open(my $fh,'>'.$filepath.'/'.$fname);
1858: print $fh $content;
1859: close($fh);
1860: my $home=&homeserver($docuname,$docudom);
1861: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1862: $home);
1863: if ($$fetchresult eq 'ok') {
1864: return '/uploaded/'.$fpath.'/'.$fname;
1865: } else {
1866: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1867: ' to host '.$home.': '.$$fetchresult);
1868: return '/adm/notfound.html';
1869: }
1870: }
1871:
1872: sub clean_filename {
1873: my ($fname,$args)=@_;
1874: # Replace Windows backslashes by forward slashes
1875: $fname=~s/\\/\//g;
1876: if (!$args->{'keep_path'}) {
1877: # Get rid of everything but the actual filename
1878: $fname=~s/^.*\/([^\/]+)$/$1/;
1879: }
1880: # Replace spaces by underscores
1881: $fname=~s/\s+/\_/g;
1882: # Replace all other weird characters by nothing
1883: $fname=~s{[^/\w\.\-]}{}g;
1884: # Replace all .\d. sequences with _\d. so they no longer look like version
1885: # numbers
1886: $fname=~s/\.(\d+)(?=\.)/_$1/g;
1887: return $fname;
1888: }
1889:
1890: # --------------- Take an uploaded file and put it into the userfiles directory
1891: # input: $formname - the contents of the file are in $env{"form.$formname"}
1892: # the desired filenam is in $env{"form.$formname.filename"}
1893: # $coursedoc - if true up to the current course
1894: # if false
1895: # $subdir - directory in userfile to store the file into
1896: # $parser - instruction to parse file for objects ($parser = parse)
1897: # $allfiles - reference to hash for embedded objects
1898: # $codebase - reference to hash for codebase of java objects
1899: # $desuname - username for permanent storage of uploaded file
1900: # $dsetudom - domain for permanaent storage of uploaded file
1901: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
1902: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
1903: #
1904: # output: url of file in userspace, or error: <message>
1905: # or /adm/notfound.html if failure to upload occurse
1906:
1907:
1908: sub userfileupload {
1909: my ($formname,$coursedoc,$subdir,$parser,$allfiles,$codebase,$destuname,
1910: $destudom,$thumbwidth,$thumbheight)=@_;
1911: if (!defined($subdir)) { $subdir='unknown'; }
1912: my $fname=$env{'form.'.$formname.'.filename'};
1913: $fname=&clean_filename($fname);
1914: # See if there is anything left
1915: unless ($fname) { return 'error: no uploaded file'; }
1916: chop($env{'form.'.$formname});
1917: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) { #files uploaded to help request form are handled differently
1918: my $now = time;
1919: my $filepath = 'tmp/helprequests/'.$now;
1920: my @parts=split(/\//,$filepath);
1921: my $fullpath = $perlvar{'lonDaemons'};
1922: for (my $i=0;$i<@parts;$i++) {
1923: $fullpath .= '/'.$parts[$i];
1924: if ((-e $fullpath)!=1) {
1925: mkdir($fullpath,0777);
1926: }
1927: }
1928: open(my $fh,'>'.$fullpath.'/'.$fname);
1929: print $fh $env{'form.'.$formname};
1930: close($fh);
1931: return $fullpath.'/'.$fname;
1932: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) { #files uploaded to create course page are handled differently
1933: my $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
1934: '_'.$env{'user.domain'}.'/pending';
1935: my @parts=split(/\//,$filepath);
1936: my $fullpath = $perlvar{'lonDaemons'};
1937: for (my $i=0;$i<@parts;$i++) {
1938: $fullpath .= '/'.$parts[$i];
1939: if ((-e $fullpath)!=1) {
1940: mkdir($fullpath,0777);
1941: }
1942: }
1943: open(my $fh,'>'.$fullpath.'/'.$fname);
1944: print $fh $env{'form.'.$formname};
1945: close($fh);
1946: return $fullpath.'/'.$fname;
1947: }
1948:
1949: # Create the directory if not present
1950: $fname="$subdir/$fname";
1951: if ($coursedoc) {
1952: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
1953: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1954: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
1955: return &finishuserfileupload($docuname,$docudom,
1956: $formname,$fname,$parser,$allfiles,
1957: $codebase,$thumbwidth,$thumbheight);
1958: } else {
1959: $fname=$env{'form.folder'}.'/'.$fname;
1960: return &process_coursefile('uploaddoc',$docuname,$docudom,
1961: $fname,$formname,$parser,
1962: $allfiles,$codebase);
1963: }
1964: } elsif (defined($destuname)) {
1965: my $docuname=$destuname;
1966: my $docudom=$destudom;
1967: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
1968: $parser,$allfiles,$codebase,
1969: $thumbwidth,$thumbheight);
1970:
1971: } else {
1972: my $docuname=$env{'user.name'};
1973: my $docudom=$env{'user.domain'};
1974: if (exists($env{'form.group'})) {
1975: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
1976: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1977: }
1978: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
1979: $parser,$allfiles,$codebase,
1980: $thumbwidth,$thumbheight);
1981: }
1982: }
1983:
1984: sub finishuserfileupload {
1985: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
1986: $thumbwidth,$thumbheight) = @_;
1987: my $path=$docudom.'/'.$docuname.'/';
1988: my $filepath=$perlvar{'lonDocRoot'};
1989: my ($fnamepath,$file,$fetchthumb);
1990: $file=$fname;
1991: if ($fname=~m|/|) {
1992: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
1993: $path.=$fnamepath.'/';
1994: }
1995: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
1996: my $count;
1997: for ($count=4;$count<=$#parts;$count++) {
1998: $filepath.="/$parts[$count]";
1999: if ((-e $filepath)!=1) {
2000: mkdir($filepath,0777);
2001: }
2002: }
2003: # Save the file
2004: {
2005: if (!open(FH,'>'.$filepath.'/'.$file)) {
2006: &logthis('Failed to create '.$filepath.'/'.$file);
2007: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
2008: return '/adm/notfound.html';
2009: }
2010: if (!print FH ($env{'form.'.$formname})) {
2011: &logthis('Failed to write to '.$filepath.'/'.$file);
2012: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
2013: return '/adm/notfound.html';
2014: }
2015: close(FH);
2016: }
2017: if ($parser eq 'parse') {
2018: my $parse_result = &extract_embedded_items($filepath,$file,$allfiles,
2019: $codebase);
2020: unless ($parse_result eq 'ok') {
2021: &logthis('Failed to parse '.$filepath.$file.
2022: ' for embedded media: '.$parse_result);
2023: }
2024: }
2025: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
2026: my $input = $filepath.'/'.$file;
2027: my $output = $filepath.'/'.'tn-'.$file;
2028: my $thumbsize = $thumbwidth.'x'.$thumbheight;
2029: system("convert -sample $thumbsize $input $output");
2030: if (-e $filepath.'/'.'tn-'.$file) {
2031: $fetchthumb = 1;
2032: }
2033: }
2034:
2035: # Notify homeserver to grep it
2036: #
2037: my $docuhome=&homeserver($docuname,$docudom);
2038: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
2039: if ($fetchresult eq 'ok') {
2040: if ($fetchthumb) {
2041: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
2042: if ($thumbresult ne 'ok') {
2043: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
2044: $docuhome.': '.$thumbresult);
2045: }
2046: }
2047: #
2048: # Return the URL to it
2049: return '/uploaded/'.$path.$file;
2050: } else {
2051: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
2052: ': '.$fetchresult);
2053: return '/adm/notfound.html';
2054: }
2055: }
2056:
2057: sub extract_embedded_items {
2058: my ($filepath,$file,$allfiles,$codebase,$content) = @_;
2059: my @state = ();
2060: my %javafiles = (
2061: codebase => '',
2062: code => '',
2063: archive => ''
2064: );
2065: my %mediafiles = (
2066: src => '',
2067: movie => '',
2068: );
2069: my $p;
2070: if ($content) {
2071: $p = HTML::LCParser->new($content);
2072: } else {
2073: $p = HTML::LCParser->new($filepath.'/'.$file);
2074: }
2075: while (my $t=$p->get_token()) {
2076: if ($t->[0] eq 'S') {
2077: my ($tagname, $attr) = ($t->[1],$t->[2]);
2078: push(@state, $tagname);
2079: if (lc($tagname) eq 'allow') {
2080: &add_filetype($allfiles,$attr->{'src'},'src');
2081: }
2082: if (lc($tagname) eq 'img') {
2083: &add_filetype($allfiles,$attr->{'src'},'src');
2084: }
2085: if (lc($tagname) eq 'a') {
2086: &add_filetype($allfiles,$attr->{'href'},'href');
2087: }
2088: if (lc($tagname) eq 'script') {
2089: if ($attr->{'archive'} =~ /\.jar$/i) {
2090: &add_filetype($allfiles,$attr->{'archive'},'archive');
2091: } else {
2092: &add_filetype($allfiles,$attr->{'src'},'src');
2093: }
2094: }
2095: if (lc($tagname) eq 'link') {
2096: if (lc($attr->{'rel'}) eq 'stylesheet') {
2097: &add_filetype($allfiles,$attr->{'href'},'href');
2098: }
2099: }
2100: if (lc($tagname) eq 'object' ||
2101: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
2102: foreach my $item (keys(%javafiles)) {
2103: $javafiles{$item} = '';
2104: }
2105: }
2106: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
2107: my $name = lc($attr->{'name'});
2108: foreach my $item (keys(%javafiles)) {
2109: if ($name eq $item) {
2110: $javafiles{$item} = $attr->{'value'};
2111: last;
2112: }
2113: }
2114: foreach my $item (keys(%mediafiles)) {
2115: if ($name eq $item) {
2116: &add_filetype($allfiles, $attr->{'value'}, 'value');
2117: last;
2118: }
2119: }
2120: }
2121: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
2122: foreach my $item (keys(%javafiles)) {
2123: if ($attr->{$item}) {
2124: $javafiles{$item} = $attr->{$item};
2125: last;
2126: }
2127: }
2128: foreach my $item (keys(%mediafiles)) {
2129: if ($attr->{$item}) {
2130: &add_filetype($allfiles,$attr->{$item},$item);
2131: last;
2132: }
2133: }
2134: }
2135: } elsif ($t->[0] eq 'E') {
2136: my ($tagname) = ($t->[1]);
2137: if ($javafiles{'codebase'} ne '') {
2138: $javafiles{'codebase'} .= '/';
2139: }
2140: if (lc($tagname) eq 'applet' ||
2141: lc($tagname) eq 'object' ||
2142: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
2143: ) {
2144: foreach my $item (keys(%javafiles)) {
2145: if ($item ne 'codebase' && $javafiles{$item} ne '') {
2146: my $file=$javafiles{'codebase'}.$javafiles{$item};
2147: &add_filetype($allfiles,$file,$item);
2148: }
2149: }
2150: }
2151: pop @state;
2152: }
2153: }
2154: return 'ok';
2155: }
2156:
2157: sub add_filetype {
2158: my ($allfiles,$file,$type)=@_;
2159: if (exists($allfiles->{$file})) {
2160: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
2161: push(@{$allfiles->{$file}}, &escape($type));
2162: }
2163: } else {
2164: @{$allfiles->{$file}} = (&escape($type));
2165: }
2166: }
2167:
2168: sub removeuploadedurl {
2169: my ($url)=@_;
2170: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
2171: return &removeuserfile($uname,$udom,$fname);
2172: }
2173:
2174: sub removeuserfile {
2175: my ($docuname,$docudom,$fname)=@_;
2176: my $home=&homeserver($docuname,$docudom);
2177: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
2178: if ($result eq 'ok') {
2179: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
2180: my $metafile = $fname.'.meta';
2181: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
2182: my $url = "/uploaded/$docudom/$docuname/$fname";
2183: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2184: my $sqlresult =
2185: &update_portfolio_table($docuname,$docudom,$file,
2186: 'portfolio_metadata',$group,
2187: 'delete');
2188: }
2189: }
2190: return $result;
2191: }
2192:
2193: sub mkdiruserfile {
2194: my ($docuname,$docudom,$dir)=@_;
2195: my $home=&homeserver($docuname,$docudom);
2196: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
2197: }
2198:
2199: sub renameuserfile {
2200: my ($docuname,$docudom,$old,$new)=@_;
2201: my $home=&homeserver($docuname,$docudom);
2202: my $result = &reply("renameuserfile:$docudom:$docuname:".
2203: &escape("$old").':'.&escape("$new"),$home);
2204: if ($result eq 'ok') {
2205: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
2206: my $oldmeta = $old.'.meta';
2207: my $newmeta = $new.'.meta';
2208: my $metaresult =
2209: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
2210: my $url = "/uploaded/$docudom/$docuname/$old";
2211: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2212: my $sqlresult =
2213: &update_portfolio_table($docuname,$docudom,$file,
2214: 'portfolio_metadata',$group,
2215: 'delete');
2216: }
2217: }
2218: return $result;
2219: }
2220:
2221: # ------------------------------------------------------------------------- Log
2222:
2223: sub log {
2224: my ($dom,$nam,$hom,$what)=@_;
2225: return critical("log:$dom:$nam:$what",$hom);
2226: }
2227:
2228: # ------------------------------------------------------------------ Course Log
2229: #
2230: # This routine flushes several buffers of non-mission-critical nature
2231: #
2232:
2233: sub flushcourselogs {
2234: &logthis('Flushing log buffers');
2235: #
2236: # course logs
2237: # This is a log of all transactions in a course, which can be used
2238: # for data mining purposes
2239: #
2240: # It also collects the courseid database, which lists last transaction
2241: # times and course titles for all courseids
2242: #
2243: my %courseidbuffer=();
2244: foreach my $crsid (keys(%courselogs)) {
2245: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
2246: &escape($courselogs{$crsid}),
2247: $coursehombuf{$crsid}) eq 'ok') {
2248: delete $courselogs{$crsid};
2249: } else {
2250: &logthis('Failed to flush log buffer for '.$crsid);
2251: if (length($courselogs{$crsid})>40000) {
2252: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
2253: " exceeded maximum size, deleting.</font>");
2254: delete $courselogs{$crsid};
2255: }
2256: }
2257: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
2258: 'description' => $coursedescrbuf{$crsid},
2259: 'inst_code' => $courseinstcodebuf{$crsid},
2260: 'type' => $coursetypebuf{$crsid},
2261: 'owner' => $courseownerbuf{$crsid},
2262: };
2263: }
2264: #
2265: # Write course id database (reverse lookup) to homeserver of courses
2266: # Is used in pickcourse
2267: #
2268: foreach my $crs_home (keys(%courseidbuffer)) {
2269: my $response = &courseidput(&host_domain($crs_home),
2270: $courseidbuffer{$crs_home},
2271: $crs_home,'timeonly');
2272: }
2273: #
2274: # File accesses
2275: # Writes to the dynamic metadata of resources to get hit counts, etc.
2276: #
2277: foreach my $entry (keys(%accesshash)) {
2278: if ($entry =~ /___count$/) {
2279: my ($dom,$name);
2280: ($dom,$name,undef)=
2281: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
2282: if (! defined($dom) || $dom eq '' ||
2283: ! defined($name) || $name eq '') {
2284: my $cid = $env{'request.course.id'};
2285: $dom = $env{'request.'.$cid.'.domain'};
2286: $name = $env{'request.'.$cid.'.num'};
2287: }
2288: my $value = $accesshash{$entry};
2289: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
2290: my %temphash=($url => $value);
2291: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
2292: if ($result eq 'ok') {
2293: delete $accesshash{$entry};
2294: } elsif ($result eq 'unknown_cmd') {
2295: # Target server has old code running on it.
2296: my %temphash=($entry => $value);
2297: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2298: delete $accesshash{$entry};
2299: }
2300: }
2301: } else {
2302: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
2303: my %temphash=($entry => $accesshash{$entry});
2304: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2305: delete $accesshash{$entry};
2306: }
2307: }
2308: }
2309: #
2310: # Roles
2311: # Reverse lookup of user roles for course faculty/staff and co-authorship
2312: #
2313: foreach my $entry (keys(%userrolehash)) {
2314: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
2315: split(/\:/,$entry);
2316: if (&Apache::lonnet::put('nohist_userroles',
2317: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
2318: $rudom,$runame) eq 'ok') {
2319: delete $userrolehash{$entry};
2320: }
2321: }
2322: #
2323: # Reverse lookup of domain roles (dc, ad, li, sc, au)
2324: #
2325: my %domrolebuffer = ();
2326: foreach my $entry (keys %domainrolehash) {
2327: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
2328: if ($domrolebuffer{$rudom}) {
2329: $domrolebuffer{$rudom}.='&'.&escape($entry).
2330: '='.&escape($domainrolehash{$entry});
2331: } else {
2332: $domrolebuffer{$rudom}.=&escape($entry).
2333: '='.&escape($domainrolehash{$entry});
2334: }
2335: delete $domainrolehash{$entry};
2336: }
2337: foreach my $dom (keys(%domrolebuffer)) {
2338: my %servers = &get_servers($dom,'library');
2339: foreach my $tryserver (keys(%servers)) {
2340: unless (&reply('domroleput:'.$dom.':'.
2341: $domrolebuffer{$dom},$tryserver) eq 'ok') {
2342: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
2343: }
2344: }
2345: }
2346: $dumpcount++;
2347: }
2348:
2349: sub courselog {
2350: my $what=shift;
2351: $what=time.':'.$what;
2352: unless ($env{'request.course.id'}) { return ''; }
2353: $coursedombuf{$env{'request.course.id'}}=
2354: $env{'course.'.$env{'request.course.id'}.'.domain'};
2355: $coursenumbuf{$env{'request.course.id'}}=
2356: $env{'course.'.$env{'request.course.id'}.'.num'};
2357: $coursehombuf{$env{'request.course.id'}}=
2358: $env{'course.'.$env{'request.course.id'}.'.home'};
2359: $coursedescrbuf{$env{'request.course.id'}}=
2360: $env{'course.'.$env{'request.course.id'}.'.description'};
2361: $courseinstcodebuf{$env{'request.course.id'}}=
2362: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
2363: $courseownerbuf{$env{'request.course.id'}}=
2364: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
2365: $coursetypebuf{$env{'request.course.id'}}=
2366: $env{'course.'.$env{'request.course.id'}.'.type'};
2367: if (defined $courselogs{$env{'request.course.id'}}) {
2368: $courselogs{$env{'request.course.id'}}.='&'.$what;
2369: } else {
2370: $courselogs{$env{'request.course.id'}}.=$what;
2371: }
2372: if (length($courselogs{$env{'request.course.id'}})>4048) {
2373: &flushcourselogs();
2374: }
2375: }
2376:
2377: sub courseacclog {
2378: my $fnsymb=shift;
2379: unless ($env{'request.course.id'}) { return ''; }
2380: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
2381: if ($fnsymb=~/(problem|exam|quiz|assess|survey|form|task|page)$/) {
2382: $what.=':POST';
2383: # FIXME: Probably ought to escape things....
2384: foreach my $key (keys(%env)) {
2385: if ($key=~/^form\.(.*)/) {
2386: $what.=':'.$1.'='.$env{$key};
2387: }
2388: }
2389: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
2390: # FIXME: We should not be depending on a form parameter that someone
2391: # editing lonsearchcat.pm might change in the future.
2392: if ($env{'form.phase'} eq 'course_search') {
2393: $what.= ':POST';
2394: # FIXME: Probably ought to escape things....
2395: foreach my $element ('courseexp','crsfulltext','crsrelated',
2396: 'crsdiscuss') {
2397: $what.=':'.$element.'='.$env{'form.'.$element};
2398: }
2399: }
2400: }
2401: &courselog($what);
2402: }
2403:
2404: sub countacc {
2405: my $url=&declutter(shift);
2406: return if (! defined($url) || $url eq '');
2407: unless ($env{'request.course.id'}) { return ''; }
2408: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
2409: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
2410: $accesshash{$key}++;
2411: }
2412:
2413: sub linklog {
2414: my ($from,$to)=@_;
2415: $from=&declutter($from);
2416: $to=&declutter($to);
2417: $accesshash{$from.'___'.$to.'___comefrom'}=1;
2418: $accesshash{$to.'___'.$from.'___goto'}=1;
2419: }
2420:
2421: sub userrolelog {
2422: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
2423: if (($trole=~/^ca/) || ($trole=~/^aa/) ||
2424: ($trole=~/^in/) || ($trole=~/^cc/) ||
2425: ($trole=~/^ep/) || ($trole=~/^cr/) ||
2426: ($trole=~/^ta/)) {
2427: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2428: $userrolehash
2429: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2430: =$tend.':'.$tstart;
2431: }
2432: if (($env{'request.role'} =~ /dc\./) &&
2433: (($trole=~/^au/) || ($trole=~/^in/) ||
2434: ($trole=~/^cc/) || ($trole=~/^ep/) ||
2435: ($trole=~/^cr/) || ($trole=~/^ta/))) {
2436: $userrolehash
2437: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
2438: =$tend.':'.$tstart;
2439: }
2440: if (($trole=~/^dc/) || ($trole=~/^ad/) ||
2441: ($trole=~/^li/) || ($trole=~/^li/) ||
2442: ($trole=~/^au/) || ($trole=~/^dg/) ||
2443: ($trole=~/^sc/)) {
2444: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2445: $domainrolehash
2446: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2447: = $tend.':'.$tstart;
2448: }
2449: }
2450:
2451: sub get_course_adv_roles {
2452: my $cid=shift;
2453: $cid=$env{'request.course.id'} unless (defined($cid));
2454: my %coursehash=&coursedescription($cid);
2455: my %nothide=();
2456: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2457: if ($user !~ /:/) {
2458: $nothide{join(':',split(/[\@]/,$user))}=1;
2459: } else {
2460: $nothide{$user}=1;
2461: }
2462: }
2463: my %returnhash=();
2464: my %dumphash=
2465: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
2466: my $now=time;
2467: foreach my $entry (keys %dumphash) {
2468: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
2469: if (($tstart) && ($tstart<0)) { next; }
2470: if (($tend) && ($tend<$now)) { next; }
2471: if (($tstart) && ($now<$tstart)) { next; }
2472: my ($role,$username,$domain,$section)=split(/\:/,$entry);
2473: if ($username eq '' || $domain eq '') { next; }
2474: if ((&privileged($username,$domain)) &&
2475: (!$nothide{$username.':'.$domain})) { next; }
2476: if ($role eq 'cr') { next; }
2477: my $key=&plaintext($role);
2478: if ($section) { $key.=' (Sec/Grp '.$section.')'; }
2479: if ($returnhash{$key}) {
2480: $returnhash{$key}.=','.$username.':'.$domain;
2481: } else {
2482: $returnhash{$key}=$username.':'.$domain;
2483: }
2484: }
2485: return %returnhash;
2486: }
2487:
2488: sub get_my_roles {
2489: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
2490: unless (defined($uname)) { $uname=$env{'user.name'}; }
2491: unless (defined($udom)) { $udom=$env{'user.domain'}; }
2492: my (%dumphash,%nothide);
2493: if ($context eq 'userroles') {
2494: %dumphash = &dump('roles',$udom,$uname);
2495: } else {
2496: %dumphash=
2497: &dump('nohist_userroles',$udom,$uname);
2498: if ($hidepriv) {
2499: my %coursehash=&coursedescription($udom.'_'.$uname);
2500: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2501: if ($user !~ /:/) {
2502: $nothide{join(':',split(/[\@]/,$user))} = 1;
2503: } else {
2504: $nothide{$user} = 1;
2505: }
2506: }
2507: }
2508: }
2509: my %returnhash=();
2510: my $now=time;
2511: foreach my $entry (keys(%dumphash)) {
2512: my ($role,$tend,$tstart);
2513: if ($context eq 'userroles') {
2514: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
2515: } else {
2516: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
2517: }
2518: if (($tstart) && ($tstart<0)) { next; }
2519: my $status = 'active';
2520: if (($tend) && ($tend<=$now)) {
2521: $status = 'previous';
2522: }
2523: if (($tstart) && ($now<$tstart)) {
2524: $status = 'future';
2525: }
2526: if (ref($types) eq 'ARRAY') {
2527: if (!grep(/^\Q$status\E$/,@{$types})) {
2528: next;
2529: }
2530: } else {
2531: if ($status ne 'active') {
2532: next;
2533: }
2534: }
2535: my ($rolecode,$username,$domain,$section,$area);
2536: if ($context eq 'userroles') {
2537: ($area,$rolecode) = split(/_/,$entry);
2538: (undef,$domain,$username,$section) = split(/\//,$area);
2539: } else {
2540: ($role,$username,$domain,$section) = split(/\:/,$entry);
2541: }
2542: if (ref($roledoms) eq 'ARRAY') {
2543: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
2544: next;
2545: }
2546: }
2547: if (ref($roles) eq 'ARRAY') {
2548: if (!grep(/^\Q$role\E$/,@{$roles})) {
2549: if ($role =~ /^cr\//) {
2550: if (!grep(/^cr$/,@{$roles})) {
2551: next;
2552: }
2553: } else {
2554: next;
2555: }
2556: }
2557: }
2558: if ($hidepriv) {
2559: if ((&privileged($username,$domain)) &&
2560: (!$nothide{$username.':'.$domain})) {
2561: next;
2562: }
2563: }
2564: if ($withsec) {
2565: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
2566: $tstart.':'.$tend;
2567: } else {
2568: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
2569: }
2570: }
2571: return %returnhash;
2572: }
2573:
2574: # ----------------------------------------------------- Frontpage Announcements
2575: #
2576: #
2577:
2578: sub postannounce {
2579: my ($server,$text)=@_;
2580: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
2581: unless ($text=~/\w/) { $text=''; }
2582: return &reply('setannounce:'.&escape($text),$server);
2583: }
2584:
2585: sub getannounce {
2586:
2587: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
2588: my $announcement='';
2589: while (my $line = <$fh>) { $announcement .= $line; }
2590: close($fh);
2591: if ($announcement=~/\w/) {
2592: return
2593: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
2594: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
2595: } else {
2596: return '';
2597: }
2598: } else {
2599: return '';
2600: }
2601: }
2602:
2603: # ---------------------------------------------------------- Course ID routines
2604: # Deal with domain's nohist_courseid.db files
2605: #
2606:
2607: sub courseidput {
2608: my ($domain,$storehash,$coursehome,$caller) = @_;
2609: my $outcome;
2610: if ($caller eq 'timeonly') {
2611: my $cids = '';
2612: foreach my $item (keys(%$storehash)) {
2613: $cids.=&escape($item).'&';
2614: }
2615: $cids=~s/\&$//;
2616: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
2617: $coursehome);
2618: } else {
2619: my $items = '';
2620: foreach my $item (keys(%$storehash)) {
2621: $items.= &escape($item).'='.
2622: &freeze_escape($$storehash{$item}).'&';
2623: }
2624: $items=~s/\&$//;
2625: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
2626: $coursehome);
2627: }
2628: if ($outcome eq 'unknown_cmd') {
2629: my $what;
2630: foreach my $cid (keys(%$storehash)) {
2631: $what .= &escape($cid).'=';
2632: foreach my $item ('description','inst_code','owner','type') {
2633: $what .= &escape($storehash->{$cid}{$item}).':';
2634: }
2635: $what =~ s/\:$/&/;
2636: }
2637: $what =~ s/\&$//;
2638: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
2639: } else {
2640: return $outcome;
2641: }
2642: }
2643:
2644: sub courseiddump {
2645: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
2646: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
2647: $selfenrollonly)=@_;
2648: my $as_hash = 1;
2649: my %returnhash;
2650: if (!$domfilter) { $domfilter=''; }
2651: my %libserv = &all_library();
2652: foreach my $tryserver (keys(%libserv)) {
2653: if ( ( $hostidflag == 1
2654: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
2655: || (!defined($hostidflag)) ) {
2656:
2657: if (($domfilter eq '') ||
2658: (&host_domain($tryserver) eq $domfilter)) {
2659: my $rep =
2660: &reply('courseiddump:'.&host_domain($tryserver).':'.
2661: $sincefilter.':'.&escape($descfilter).':'.
2662: &escape($instcodefilter).':'.&escape($ownerfilter).
2663: ':'.&escape($coursefilter).':'.&escape($typefilter).
2664: ':'.&escape($regexp_ok).':'.$as_hash.':'.
2665: &escape($selfenrollonly),$tryserver);
2666: my @pairs=split(/\&/,$rep);
2667: foreach my $item (@pairs) {
2668: my ($key,$value)=split(/\=/,$item,2);
2669: $key = &unescape($key);
2670: next if ($key =~ /^error: 2 /);
2671: my $result = &thaw_unescape($value);
2672: if (ref($result) eq 'HASH') {
2673: $returnhash{$key}=$result;
2674: } else {
2675: my @responses = split(/:/,$value);
2676: my @items = ('description','inst_code','owner','type');
2677: for (my $i=0; $i<@responses; $i++) {
2678: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
2679: }
2680: }
2681: }
2682: }
2683: }
2684: }
2685: return %returnhash;
2686: }
2687:
2688: # ---------------------------------------------------------- DC e-mail
2689:
2690: sub dcmailput {
2691: my ($domain,$msgid,$message,$server)=@_;
2692: my $status = &Apache::lonnet::critical(
2693: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
2694: &escape($message),$server);
2695: return $status;
2696: }
2697:
2698: sub dcmaildump {
2699: my ($dom,$startdate,$enddate,$senders) = @_;
2700: my %returnhash=();
2701:
2702: if (defined(&domain($dom,'primary'))) {
2703: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
2704: &escape($enddate).':';
2705: my @esc_senders=map { &escape($_)} @$senders;
2706: $cmd.=&escape(join('&',@esc_senders));
2707: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
2708: my ($key,$value) = split(/\=/,$line,2);
2709: if (($key) && ($value)) {
2710: $returnhash{&unescape($key)} = &unescape($value);
2711: }
2712: }
2713: }
2714: return %returnhash;
2715: }
2716: # ---------------------------------------------------------- Domain roles
2717:
2718: sub get_domain_roles {
2719: my ($dom,$roles,$startdate,$enddate)=@_;
2720: if (undef($startdate) || $startdate eq '') {
2721: $startdate = '.';
2722: }
2723: if (undef($enddate) || $enddate eq '') {
2724: $enddate = '.';
2725: }
2726: my $rolelist;
2727: if (ref($roles) eq 'ARRAY') {
2728: $rolelist = join(':',@{$roles});
2729: }
2730: my %personnel = ();
2731:
2732: my %servers = &get_servers($dom,'library');
2733: foreach my $tryserver (keys(%servers)) {
2734: %{$personnel{$tryserver}}=();
2735: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
2736: &escape($startdate).':'.
2737: &escape($enddate).':'.
2738: &escape($rolelist), $tryserver))) {
2739: my ($key,$value) = split(/\=/,$line,2);
2740: if (($key) && ($value)) {
2741: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
2742: }
2743: }
2744: }
2745: return %personnel;
2746: }
2747:
2748: # ----------------------------------------------------------- Check out an item
2749:
2750: sub get_first_access {
2751: my ($type,$argsymb)=@_;
2752: my ($symb,$courseid,$udom,$uname)=&whichuser();
2753: if ($argsymb) { $symb=$argsymb; }
2754: my ($map,$id,$res)=&decode_symb($symb);
2755: if ($type eq 'course') {
2756: $res='course';
2757: } elsif ($type eq 'map') {
2758: $res=&symbread($map);
2759: } else {
2760: $res=$symb;
2761: }
2762: my %times=&get('firstaccesstimes',["$courseid\0$res"],$udom,$uname);
2763: return $times{"$courseid\0$res"};
2764: }
2765:
2766: sub set_first_access {
2767: my ($type)=@_;
2768: my ($symb,$courseid,$udom,$uname)=&whichuser();
2769: my ($map,$id,$res)=&decode_symb($symb);
2770: if ($type eq 'course') {
2771: $res='course';
2772: } elsif ($type eq 'map') {
2773: $res=&symbread($map);
2774: } else {
2775: $res=$symb;
2776: }
2777: my $firstaccess=&get_first_access($type,$symb);
2778: if (!$firstaccess) {
2779: return &put('firstaccesstimes',{"$courseid\0$res"=>time},$udom,$uname);
2780: }
2781: return 'already_set';
2782: }
2783:
2784: sub checkout {
2785: my ($symb,$tuname,$tudom,$tcrsid)=@_;
2786: my $now=time;
2787: my $lonhost=$perlvar{'lonHostID'};
2788: my $infostr=&escape(
2789: 'CHECKOUTTOKEN&'.
2790: $tuname.'&'.
2791: $tudom.'&'.
2792: $tcrsid.'&'.
2793: $symb.'&'.
2794: $now.'&'.$ENV{'REMOTE_ADDR'});
2795: my $token=&reply('tmpput:'.$infostr,$lonhost);
2796: if ($token=~/^error\:/) {
2797: &logthis("<font color=\"blue\">WARNING: ".
2798: "Checkout tmpput failed ".$tudom.' - '.$tuname.' - '.$symb.
2799: "</font>");
2800: return '';
2801: }
2802:
2803: $token=~s/^(\d+)\_.*\_(\d+)$/$1\*$2\*$lonhost/;
2804: $token=~tr/a-z/A-Z/;
2805:
2806: my %infohash=('resource.0.outtoken' => $token,
2807: 'resource.0.checkouttime' => $now,
2808: 'resource.0.outremote' => $ENV{'REMOTE_ADDR'});
2809:
2810: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
2811: return '';
2812: } else {
2813: &logthis("<font color=\"blue\">WARNING: ".
2814: "Checkout cstore failed ".$tudom.' - '.$tuname.' - '.$symb.
2815: "</font>");
2816: }
2817:
2818: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
2819: &escape('Checkout '.$infostr.' - '.
2820: $token)) ne 'ok') {
2821: return '';
2822: } else {
2823: &logthis("<font color=\"blue\">WARNING: ".
2824: "Checkout log failed ".$tudom.' - '.$tuname.' - '.$symb.
2825: "</font>");
2826: }
2827: return $token;
2828: }
2829:
2830: # ------------------------------------------------------------ Check in an item
2831:
2832: sub checkin {
2833: my $token=shift;
2834: my $now=time;
2835: my ($ta,$tb,$lonhost)=split(/\*/,$token);
2836: $lonhost=~tr/A-Z/a-z/;
2837: my $dtoken=$ta.'_'.&hostname($lonhost).'_'.$tb;
2838: $dtoken=~s/\W/\_/g;
2839: my ($dummy,$tuname,$tudom,$tcrsid,$symb,$chtim,$rmaddr)=
2840: split(/\&/,&unescape(&reply('tmpget:'.$dtoken,$lonhost)));
2841:
2842: unless (($tuname) && ($tudom)) {
2843: &logthis('Check in '.$token.' ('.$dtoken.') failed');
2844: return '';
2845: }
2846:
2847: unless (&allowed('mgr',$tcrsid)) {
2848: &logthis('Check in '.$token.' ('.$dtoken.') unauthorized: '.
2849: $env{'user.name'}.' - '.$env{'user.domain'});
2850: return '';
2851: }
2852:
2853: my %infohash=('resource.0.intoken' => $token,
2854: 'resource.0.checkintime' => $now,
2855: 'resource.0.inremote' => $ENV{'REMOTE_ADDR'});
2856:
2857: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
2858: return '';
2859: }
2860:
2861: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
2862: &escape('Checkin - '.$token)) ne 'ok') {
2863: return '';
2864: }
2865:
2866: return ($symb,$tuname,$tudom,$tcrsid);
2867: }
2868:
2869: # --------------------------------------------- Set Expire Date for Spreadsheet
2870:
2871: sub expirespread {
2872: my ($uname,$udom,$stype,$usymb)=@_;
2873: my $cid=$env{'request.course.id'};
2874: if ($cid) {
2875: my $now=time;
2876: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
2877: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
2878: $env{'course.'.$cid.'.num'}.
2879: ':nohist_expirationdates:'.
2880: &escape($key).'='.$now,
2881: $env{'course.'.$cid.'.home'})
2882: }
2883: return 'ok';
2884: }
2885:
2886: # ----------------------------------------------------- Devalidate Spreadsheets
2887:
2888: sub devalidate {
2889: my ($symb,$uname,$udom)=@_;
2890: my $cid=$env{'request.course.id'};
2891: if ($cid) {
2892: # delete the stored spreadsheets for
2893: # - the student level sheet of this user in course's homespace
2894: # - the assessment level sheet for this resource
2895: # for this user in user's homespace
2896: # - current conditional state info
2897: my $key=$uname.':'.$udom.':';
2898: my $status=
2899: &del('nohist_calculatedsheets',
2900: [$key.'studentcalc:'],
2901: $env{'course.'.$cid.'.domain'},
2902: $env{'course.'.$cid.'.num'})
2903: .' '.
2904: &del('nohist_calculatedsheets_'.$cid,
2905: [$key.'assesscalc:'.$symb],$udom,$uname);
2906: unless ($status eq 'ok ok') {
2907: &logthis('Could not devalidate spreadsheet '.
2908: $uname.' at '.$udom.' for '.
2909: $symb.': '.$status);
2910: }
2911: &delenv('user.state.'.$cid);
2912: }
2913: }
2914:
2915: sub get_scalar {
2916: my ($string,$end) = @_;
2917: my $value;
2918: if ($$string =~ s/^([^&]*?)($end)/$2/) {
2919: $value = $1;
2920: } elsif ($$string =~ s/^([^&]*?)&//) {
2921: $value = $1;
2922: }
2923: return &unescape($value);
2924: }
2925:
2926: sub array2str {
2927: my (@array) = @_;
2928: my $result=&arrayref2str(\@array);
2929: $result=~s/^__ARRAY_REF__//;
2930: $result=~s/__END_ARRAY_REF__$//;
2931: return $result;
2932: }
2933:
2934: sub arrayref2str {
2935: my ($arrayref) = @_;
2936: my $result='__ARRAY_REF__';
2937: foreach my $elem (@$arrayref) {
2938: if(ref($elem) eq 'ARRAY') {
2939: $result.=&arrayref2str($elem).'&';
2940: } elsif(ref($elem) eq 'HASH') {
2941: $result.=&hashref2str($elem).'&';
2942: } elsif(ref($elem)) {
2943: #print("Got a ref of ".(ref($elem))." skipping.");
2944: } else {
2945: $result.=&escape($elem).'&';
2946: }
2947: }
2948: $result=~s/\&$//;
2949: $result .= '__END_ARRAY_REF__';
2950: return $result;
2951: }
2952:
2953: sub hash2str {
2954: my (%hash) = @_;
2955: my $result=&hashref2str(\%hash);
2956: $result=~s/^__HASH_REF__//;
2957: $result=~s/__END_HASH_REF__$//;
2958: return $result;
2959: }
2960:
2961: sub hashref2str {
2962: my ($hashref)=@_;
2963: my $result='__HASH_REF__';
2964: foreach my $key (sort(keys(%$hashref))) {
2965: if (ref($key) eq 'ARRAY') {
2966: $result.=&arrayref2str($key).'=';
2967: } elsif (ref($key) eq 'HASH') {
2968: $result.=&hashref2str($key).'=';
2969: } elsif (ref($key)) {
2970: $result.='=';
2971: #print("Got a ref of ".(ref($key))." skipping.");
2972: } else {
2973: if ($key) {$result.=&escape($key).'=';} else { last; }
2974: }
2975:
2976: if(ref($hashref->{$key}) eq 'ARRAY') {
2977: $result.=&arrayref2str($hashref->{$key}).'&';
2978: } elsif(ref($hashref->{$key}) eq 'HASH') {
2979: $result.=&hashref2str($hashref->{$key}).'&';
2980: } elsif(ref($hashref->{$key})) {
2981: $result.='&';
2982: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
2983: } else {
2984: $result.=&escape($hashref->{$key}).'&';
2985: }
2986: }
2987: $result=~s/\&$//;
2988: $result .= '__END_HASH_REF__';
2989: return $result;
2990: }
2991:
2992: sub str2hash {
2993: my ($string)=@_;
2994: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
2995: return %$hash;
2996: }
2997:
2998: sub str2hashref {
2999: my ($string) = @_;
3000:
3001: my %hash;
3002:
3003: if($string !~ /^__HASH_REF__/) {
3004: if (! ($string eq '' || !defined($string))) {
3005: $hash{'error'}='Not hash reference';
3006: }
3007: return (\%hash, $string);
3008: }
3009:
3010: $string =~ s/^__HASH_REF__//;
3011:
3012: while($string !~ /^__END_HASH_REF__/) {
3013: #key
3014: my $key='';
3015: if($string =~ /^__HASH_REF__/) {
3016: ($key, $string)=&str2hashref($string);
3017: if(defined($key->{'error'})) {
3018: $hash{'error'}='Bad data';
3019: return (\%hash, $string);
3020: }
3021: } elsif($string =~ /^__ARRAY_REF__/) {
3022: ($key, $string)=&str2arrayref($string);
3023: if($key->[0] eq 'Array reference error') {
3024: $hash{'error'}='Bad data';
3025: return (\%hash, $string);
3026: }
3027: } else {
3028: $string =~ s/^(.*?)=//;
3029: $key=&unescape($1);
3030: }
3031: $string =~ s/^=//;
3032:
3033: #value
3034: my $value='';
3035: if($string =~ /^__HASH_REF__/) {
3036: ($value, $string)=&str2hashref($string);
3037: if(defined($value->{'error'})) {
3038: $hash{'error'}='Bad data';
3039: return (\%hash, $string);
3040: }
3041: } elsif($string =~ /^__ARRAY_REF__/) {
3042: ($value, $string)=&str2arrayref($string);
3043: if($value->[0] eq 'Array reference error') {
3044: $hash{'error'}='Bad data';
3045: return (\%hash, $string);
3046: }
3047: } else {
3048: $value=&get_scalar(\$string,'__END_HASH_REF__');
3049: }
3050: $string =~ s/^&//;
3051:
3052: $hash{$key}=$value;
3053: }
3054:
3055: $string =~ s/^__END_HASH_REF__//;
3056:
3057: return (\%hash, $string);
3058: }
3059:
3060: sub str2array {
3061: my ($string)=@_;
3062: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
3063: return @$array;
3064: }
3065:
3066: sub str2arrayref {
3067: my ($string) = @_;
3068: my @array;
3069:
3070: if($string !~ /^__ARRAY_REF__/) {
3071: if (! ($string eq '' || !defined($string))) {
3072: $array[0]='Array reference error';
3073: }
3074: return (\@array, $string);
3075: }
3076:
3077: $string =~ s/^__ARRAY_REF__//;
3078:
3079: while($string !~ /^__END_ARRAY_REF__/) {
3080: my $value='';
3081: if($string =~ /^__HASH_REF__/) {
3082: ($value, $string)=&str2hashref($string);
3083: if(defined($value->{'error'})) {
3084: $array[0] ='Array reference error';
3085: return (\@array, $string);
3086: }
3087: } elsif($string =~ /^__ARRAY_REF__/) {
3088: ($value, $string)=&str2arrayref($string);
3089: if($value->[0] eq 'Array reference error') {
3090: $array[0] ='Array reference error';
3091: return (\@array, $string);
3092: }
3093: } else {
3094: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
3095: }
3096: $string =~ s/^&//;
3097:
3098: push(@array, $value);
3099: }
3100:
3101: $string =~ s/^__END_ARRAY_REF__//;
3102:
3103: return (\@array, $string);
3104: }
3105:
3106: # -------------------------------------------------------------------Temp Store
3107:
3108: sub tmpreset {
3109: my ($symb,$namespace,$domain,$stuname) = @_;
3110: if (!$symb) {
3111: $symb=&symbread();
3112: if (!$symb) { $symb= $env{'request.url'}; }
3113: }
3114: $symb=escape($symb);
3115:
3116: if (!$namespace) { $namespace=$env{'request.state'}; }
3117: $namespace=~s/\//\_/g;
3118: $namespace=~s/\W//g;
3119:
3120: if (!$domain) { $domain=$env{'user.domain'}; }
3121: if (!$stuname) { $stuname=$env{'user.name'}; }
3122: if ($domain eq 'public' && $stuname eq 'public') {
3123: $stuname=$ENV{'REMOTE_ADDR'};
3124: }
3125: my $path=$perlvar{'lonDaemons'}.'/tmp';
3126: my %hash;
3127: if (tie(%hash,'GDBM_File',
3128: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3129: &GDBM_WRCREAT(),0640)) {
3130: foreach my $key (keys %hash) {
3131: if ($key=~ /:$symb/) {
3132: delete($hash{$key});
3133: }
3134: }
3135: }
3136: }
3137:
3138: sub tmpstore {
3139: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3140:
3141: if (!$symb) {
3142: $symb=&symbread();
3143: if (!$symb) { $symb= $env{'request.url'}; }
3144: }
3145: $symb=escape($symb);
3146:
3147: if (!$namespace) {
3148: # I don't think we would ever want to store this for a course.
3149: # it seems this will only be used if we don't have a course.
3150: #$namespace=$env{'request.course.id'};
3151: #if (!$namespace) {
3152: $namespace=$env{'request.state'};
3153: #}
3154: }
3155: $namespace=~s/\//\_/g;
3156: $namespace=~s/\W//g;
3157: if (!$domain) { $domain=$env{'user.domain'}; }
3158: if (!$stuname) { $stuname=$env{'user.name'}; }
3159: if ($domain eq 'public' && $stuname eq 'public') {
3160: $stuname=$ENV{'REMOTE_ADDR'};
3161: }
3162: my $now=time;
3163: my %hash;
3164: my $path=$perlvar{'lonDaemons'}.'/tmp';
3165: if (tie(%hash,'GDBM_File',
3166: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3167: &GDBM_WRCREAT(),0640)) {
3168: $hash{"version:$symb"}++;
3169: my $version=$hash{"version:$symb"};
3170: my $allkeys='';
3171: foreach my $key (keys(%$storehash)) {
3172: $allkeys.=$key.':';
3173: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
3174: }
3175: $hash{"$version:$symb:timestamp"}=$now;
3176: $allkeys.='timestamp';
3177: $hash{"$version:keys:$symb"}=$allkeys;
3178: if (untie(%hash)) {
3179: return 'ok';
3180: } else {
3181: return "error:$!";
3182: }
3183: } else {
3184: return "error:$!";
3185: }
3186: }
3187:
3188: # -----------------------------------------------------------------Temp Restore
3189:
3190: sub tmprestore {
3191: my ($symb,$namespace,$domain,$stuname) = @_;
3192:
3193: if (!$symb) {
3194: $symb=&symbread();
3195: if (!$symb) { $symb= $env{'request.url'}; }
3196: }
3197: $symb=escape($symb);
3198:
3199: if (!$namespace) { $namespace=$env{'request.state'}; }
3200:
3201: if (!$domain) { $domain=$env{'user.domain'}; }
3202: if (!$stuname) { $stuname=$env{'user.name'}; }
3203: if ($domain eq 'public' && $stuname eq 'public') {
3204: $stuname=$ENV{'REMOTE_ADDR'};
3205: }
3206: my %returnhash;
3207: $namespace=~s/\//\_/g;
3208: $namespace=~s/\W//g;
3209: my %hash;
3210: my $path=$perlvar{'lonDaemons'}.'/tmp';
3211: if (tie(%hash,'GDBM_File',
3212: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3213: &GDBM_READER(),0640)) {
3214: my $version=$hash{"version:$symb"};
3215: $returnhash{'version'}=$version;
3216: my $scope;
3217: for ($scope=1;$scope<=$version;$scope++) {
3218: my $vkeys=$hash{"$scope:keys:$symb"};
3219: my @keys=split(/:/,$vkeys);
3220: my $key;
3221: $returnhash{"$scope:keys"}=$vkeys;
3222: foreach $key (@keys) {
3223: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3224: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3225: }
3226: }
3227: if (!(untie(%hash))) {
3228: return "error:$!";
3229: }
3230: } else {
3231: return "error:$!";
3232: }
3233: return %returnhash;
3234: }
3235:
3236: # ----------------------------------------------------------------------- Store
3237:
3238: sub store {
3239: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3240: my $home='';
3241:
3242: if ($stuname) { $home=&homeserver($stuname,$domain); }
3243:
3244: $symb=&symbclean($symb);
3245: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3246:
3247: if (!$domain) { $domain=$env{'user.domain'}; }
3248: if (!$stuname) { $stuname=$env{'user.name'}; }
3249:
3250: &devalidate($symb,$stuname,$domain);
3251:
3252: $symb=escape($symb);
3253: if (!$namespace) {
3254: unless ($namespace=$env{'request.course.id'}) {
3255: return '';
3256: }
3257: }
3258: if (!$home) { $home=$env{'user.home'}; }
3259:
3260: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3261: $$storehash{'host'}=$perlvar{'lonHostID'};
3262:
3263: my $namevalue='';
3264: foreach my $key (keys(%$storehash)) {
3265: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3266: }
3267: $namevalue=~s/\&$//;
3268: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
3269: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3270: }
3271:
3272: # -------------------------------------------------------------- Critical Store
3273:
3274: sub cstore {
3275: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3276: my $home='';
3277:
3278: if ($stuname) { $home=&homeserver($stuname,$domain); }
3279:
3280: $symb=&symbclean($symb);
3281: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3282:
3283: if (!$domain) { $domain=$env{'user.domain'}; }
3284: if (!$stuname) { $stuname=$env{'user.name'}; }
3285:
3286: &devalidate($symb,$stuname,$domain);
3287:
3288: $symb=escape($symb);
3289: if (!$namespace) {
3290: unless ($namespace=$env{'request.course.id'}) {
3291: return '';
3292: }
3293: }
3294: if (!$home) { $home=$env{'user.home'}; }
3295:
3296: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3297: $$storehash{'host'}=$perlvar{'lonHostID'};
3298:
3299: my $namevalue='';
3300: foreach my $key (keys(%$storehash)) {
3301: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3302: }
3303: $namevalue=~s/\&$//;
3304: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
3305: return critical
3306: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3307: }
3308:
3309: # --------------------------------------------------------------------- Restore
3310:
3311: sub restore {
3312: my ($symb,$namespace,$domain,$stuname) = @_;
3313: my $home='';
3314:
3315: if ($stuname) { $home=&homeserver($stuname,$domain); }
3316:
3317: if (!$symb) {
3318: unless ($symb=escape(&symbread())) { return ''; }
3319: } else {
3320: $symb=&escape(&symbclean($symb));
3321: }
3322: if (!$namespace) {
3323: unless ($namespace=$env{'request.course.id'}) {
3324: return '';
3325: }
3326: }
3327: if (!$domain) { $domain=$env{'user.domain'}; }
3328: if (!$stuname) { $stuname=$env{'user.name'}; }
3329: if (!$home) { $home=$env{'user.home'}; }
3330: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
3331:
3332: my %returnhash=();
3333: foreach my $line (split(/\&/,$answer)) {
3334: my ($name,$value)=split(/\=/,$line);
3335: $returnhash{&unescape($name)}=&thaw_unescape($value);
3336: }
3337: my $version;
3338: for ($version=1;$version<=$returnhash{'version'};$version++) {
3339: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
3340: $returnhash{$item}=$returnhash{$version.':'.$item};
3341: }
3342: }
3343: return %returnhash;
3344: }
3345:
3346: # ---------------------------------------------------------- Course Description
3347:
3348: sub coursedescription {
3349: my ($courseid,$args)=@_;
3350: $courseid=~s/^\///;
3351: $courseid=~s/\_/\//g;
3352: my ($cdomain,$cnum)=split(/\//,$courseid);
3353: my $chome=&homeserver($cnum,$cdomain);
3354: my $normalid=$cdomain.'_'.$cnum;
3355: # need to always cache even if we get errors otherwise we keep
3356: # trying and trying and trying to get the course description.
3357: my %envhash=();
3358: my %returnhash=();
3359:
3360: my $expiretime=600;
3361: if ($env{'request.course.id'} eq $normalid) {
3362: $expiretime=120;
3363: }
3364:
3365: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
3366: if (!$args->{'freshen_cache'}
3367: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
3368: foreach my $key (keys(%env)) {
3369: next if ($key !~ /^\Q$prefix\E(.*)/);
3370: my ($setting) = $1;
3371: $returnhash{$setting} = $env{$key};
3372: }
3373: return %returnhash;
3374: }
3375:
3376: # get the data agin
3377: if (!$args->{'one_time'}) {
3378: $envhash{'course.'.$normalid.'.last_cache'}=time;
3379: }
3380:
3381: if ($chome ne 'no_host') {
3382: %returnhash=&dump('environment',$cdomain,$cnum);
3383: if (!exists($returnhash{'con_lost'})) {
3384: $returnhash{'home'}= $chome;
3385: $returnhash{'domain'} = $cdomain;
3386: $returnhash{'num'} = $cnum;
3387: if (!defined($returnhash{'type'})) {
3388: $returnhash{'type'} = 'Course';
3389: }
3390: while (my ($name,$value) = each %returnhash) {
3391: $envhash{'course.'.$normalid.'.'.$name}=$value;
3392: }
3393: $returnhash{'url'}=&clutter($returnhash{'url'});
3394: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
3395: $env{'user.name'}.'_'.$cdomain.'_'.$cnum;
3396: $envhash{'course.'.$normalid.'.home'}=$chome;
3397: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
3398: $envhash{'course.'.$normalid.'.num'}=$cnum;
3399: }
3400: }
3401: if (!$args->{'one_time'}) {
3402: &appenv(%envhash);
3403: }
3404: return %returnhash;
3405: }
3406:
3407: # -------------------------------------------------See if a user is privileged
3408:
3409: sub privileged {
3410: my ($username,$domain)=@_;
3411: my $rolesdump=&reply("dump:$domain:$username:roles",
3412: &homeserver($username,$domain));
3413: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return 0; }
3414: my $now=time;
3415: if ($rolesdump ne '') {
3416: foreach my $entry (split(/&/,$rolesdump)) {
3417: if ($entry!~/^rolesdef_/) {
3418: my ($area,$role)=split(/=/,$entry);
3419: $area=~s/\_\w\w$//;
3420: my ($trole,$tend,$tstart)=split(/_/,$role);
3421: if (($trole eq 'dc') || ($trole eq 'su')) {
3422: my $active=1;
3423: if ($tend) {
3424: if ($tend<$now) { $active=0; }
3425: }
3426: if ($tstart) {
3427: if ($tstart>$now) { $active=0; }
3428: }
3429: if ($active) { return 1; }
3430: }
3431: }
3432: }
3433: }
3434: return 0;
3435: }
3436:
3437: # -------------------------------------------------------- Get user privileges
3438:
3439: sub rolesinit {
3440: my ($domain,$username,$authhost)=@_;
3441: my $rolesdump=reply("dump:$domain:$username:roles",$authhost);
3442: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return ''; }
3443: my %allroles=();
3444: my %allgroups=();
3445: my $now=time;
3446: my %userroles = ('user.login.time' => $now);
3447: my $group_privs;
3448:
3449: if ($rolesdump ne '') {
3450: foreach my $entry (split(/&/,$rolesdump)) {
3451: if ($entry!~/^rolesdef_/) {
3452: my ($area,$role)=split(/=/,$entry);
3453: $area=~s/\_\w\w$//;
3454: my ($trole,$tend,$tstart,$group_privs);
3455: if ($role=~/^cr/) {
3456: if ($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
3457: ($trole,my $trest)=($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|);
3458: ($tend,$tstart)=split('_',$trest);
3459: } else {
3460: $trole=$role;
3461: }
3462: } elsif ($role =~ m|^gr/|) {
3463: ($trole,$tend,$tstart) = split(/_/,$role);
3464: ($trole,$group_privs) = split(/\//,$trole);
3465: $group_privs = &unescape($group_privs);
3466: } else {
3467: ($trole,$tend,$tstart)=split(/_/,$role);
3468: }
3469: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
3470: $username);
3471: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
3472: if (($tend!=0) && ($tend<$now)) { $trole=''; }
3473: if (($tstart!=0) && ($tstart>$now)) { $trole=''; }
3474: if (($area ne '') && ($trole ne '')) {
3475: my $spec=$trole.'.'.$area;
3476: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
3477: if ($trole =~ /^cr\//) {
3478: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
3479: } elsif ($trole eq 'gr') {
3480: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
3481: } else {
3482: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
3483: }
3484: }
3485: }
3486: }
3487: my ($author,$adv) = &set_userprivs(\%userroles,\%allroles,\%allgroups);
3488: $userroles{'user.adv'} = $adv;
3489: $userroles{'user.author'} = $author;
3490: $env{'user.adv'}=$adv;
3491: }
3492: return \%userroles;
3493: }
3494:
3495: sub set_arearole {
3496: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
3497: # log the associated role with the area
3498: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
3499: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
3500: }
3501:
3502: sub custom_roleprivs {
3503: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
3504: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
3505: my $homsvr=homeserver($rauthor,$rdomain);
3506: if (&hostname($homsvr) ne '') {
3507: my ($rdummy,$roledef)=
3508: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
3509: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
3510: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
3511: if (defined($syspriv)) {
3512: $$allroles{'cm./'}.=':'.$syspriv;
3513: $$allroles{$spec.'./'}.=':'.$syspriv;
3514: }
3515: if ($tdomain ne '') {
3516: if (defined($dompriv)) {
3517: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
3518: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
3519: }
3520: if (($trest ne '') && (defined($coursepriv))) {
3521: $$allroles{'cm.'.$area}.=':'.$coursepriv;
3522: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
3523: }
3524: }
3525: }
3526: }
3527: }
3528:
3529: sub group_roleprivs {
3530: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
3531: my $access = 1;
3532: my $now = time;
3533: if (($tend!=0) && ($tend<$now)) { $access = 0; }
3534: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
3535: if ($access) {
3536: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
3537: $$allgroups{$course}{$group} .=':'.$group_privs;
3538: }
3539: }
3540:
3541: sub standard_roleprivs {
3542: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
3543: if (defined($pr{$trole.':s'})) {
3544: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
3545: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
3546: }
3547: if ($tdomain ne '') {
3548: if (defined($pr{$trole.':d'})) {
3549: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
3550: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
3551: }
3552: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
3553: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
3554: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
3555: }
3556: }
3557: }
3558:
3559: sub set_userprivs {
3560: my ($userroles,$allroles,$allgroups) = @_;
3561: my $author=0;
3562: my $adv=0;
3563: my %grouproles = ();
3564: if (keys(%{$allgroups}) > 0) {
3565: foreach my $role (keys %{$allroles}) {
3566: my ($trole,$area,$sec,$extendedarea);
3567: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
3568: $trole = $1;
3569: $area = $2;
3570: $sec = $3;
3571: $extendedarea = $area.$sec;
3572: if (exists($$allgroups{$area})) {
3573: foreach my $group (keys(%{$$allgroups{$area}})) {
3574: my $spec = $trole.'.'.$extendedarea;
3575: $grouproles{$spec.'.'.$area.'/'.$group} =
3576: $$allgroups{$area}{$group};
3577: }
3578: }
3579: }
3580: }
3581: }
3582: foreach my $group (keys(%grouproles)) {
3583: $$allroles{$group} = $grouproles{$group};
3584: }
3585: foreach my $role (keys(%{$allroles})) {
3586: my %thesepriv;
3587: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
3588: foreach my $item (split(/:/,$$allroles{$role})) {
3589: if ($item ne '') {
3590: my ($privilege,$restrictions)=split(/&/,$item);
3591: if ($restrictions eq '') {
3592: $thesepriv{$privilege}='F';
3593: } elsif ($thesepriv{$privilege} ne 'F') {
3594: $thesepriv{$privilege}.=$restrictions;
3595: }
3596: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
3597: }
3598: }
3599: my $thesestr='';
3600: foreach my $priv (keys(%thesepriv)) {
3601: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
3602: }
3603: $userroles->{'user.priv.'.$role} = $thesestr;
3604: }
3605: return ($author,$adv);
3606: }
3607:
3608: # --------------------------------------------------------------- get interface
3609:
3610: sub get {
3611: my ($namespace,$storearr,$udomain,$uname)=@_;
3612: my $items='';
3613: foreach my $item (@$storearr) {
3614: $items.=&escape($item).'&';
3615: }
3616: $items=~s/\&$//;
3617: if (!$udomain) { $udomain=$env{'user.domain'}; }
3618: if (!$uname) { $uname=$env{'user.name'}; }
3619: my $uhome=&homeserver($uname,$udomain);
3620:
3621: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
3622: my @pairs=split(/\&/,$rep);
3623: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
3624: return @pairs;
3625: }
3626: my %returnhash=();
3627: my $i=0;
3628: foreach my $item (@$storearr) {
3629: $returnhash{$item}=&thaw_unescape($pairs[$i]);
3630: $i++;
3631: }
3632: return %returnhash;
3633: }
3634:
3635: # --------------------------------------------------------------- del interface
3636:
3637: sub del {
3638: my ($namespace,$storearr,$udomain,$uname)=@_;
3639: my $items='';
3640: foreach my $item (@$storearr) {
3641: $items.=&escape($item).'&';
3642: }
3643: $items=~s/\&$//;
3644: if (!$udomain) { $udomain=$env{'user.domain'}; }
3645: if (!$uname) { $uname=$env{'user.name'}; }
3646: my $uhome=&homeserver($uname,$udomain);
3647:
3648: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
3649: }
3650:
3651: # -------------------------------------------------------------- dump interface
3652:
3653: sub dump {
3654: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
3655: if (!$udomain) { $udomain=$env{'user.domain'}; }
3656: if (!$uname) { $uname=$env{'user.name'}; }
3657: my $uhome=&homeserver($uname,$udomain);
3658: if ($regexp) {
3659: $regexp=&escape($regexp);
3660: } else {
3661: $regexp='.';
3662: }
3663: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
3664: my @pairs=split(/\&/,$rep);
3665: my %returnhash=();
3666: foreach my $item (@pairs) {
3667: my ($key,$value)=split(/=/,$item,2);
3668: $key = &unescape($key);
3669: next if ($key =~ /^error: 2 /);
3670: $returnhash{$key}=&thaw_unescape($value);
3671: }
3672: return %returnhash;
3673: }
3674:
3675: # --------------------------------------------------------- dumpstore interface
3676:
3677: sub dumpstore {
3678: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
3679: if (!$udomain) { $udomain=$env{'user.domain'}; }
3680: if (!$uname) { $uname=$env{'user.name'}; }
3681: my $uhome=&homeserver($uname,$udomain);
3682: if ($regexp) {
3683: $regexp=&escape($regexp);
3684: } else {
3685: $regexp='.';
3686: }
3687: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
3688: my @pairs=split(/\&/,$rep);
3689: my %returnhash=();
3690: foreach my $item (@pairs) {
3691: my ($key,$value)=split(/=/,$item,2);
3692: next if ($key =~ /^error: 2 /);
3693: $returnhash{$key}=&thaw_unescape($value);
3694: }
3695: return %returnhash;
3696: }
3697:
3698: # -------------------------------------------------------------- keys interface
3699:
3700: sub getkeys {
3701: my ($namespace,$udomain,$uname)=@_;
3702: if (!$udomain) { $udomain=$env{'user.domain'}; }
3703: if (!$uname) { $uname=$env{'user.name'}; }
3704: my $uhome=&homeserver($uname,$udomain);
3705: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
3706: my @keyarray=();
3707: foreach my $key (split(/\&/,$rep)) {
3708: next if ($key =~ /^error: 2 /);
3709: push(@keyarray,&unescape($key));
3710: }
3711: return @keyarray;
3712: }
3713:
3714: # --------------------------------------------------------------- currentdump
3715: sub currentdump {
3716: my ($courseid,$sdom,$sname)=@_;
3717: $courseid = $env{'request.course.id'} if (! defined($courseid));
3718: $sdom = $env{'user.domain'} if (! defined($sdom));
3719: $sname = $env{'user.name'} if (! defined($sname));
3720: my $uhome = &homeserver($sname,$sdom);
3721: my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
3722: return if ($rep =~ /^(error:|no_such_host)/);
3723: #
3724: my %returnhash=();
3725: #
3726: if ($rep eq "unknown_cmd") {
3727: # an old lond will not know currentdump
3728: # Do a dump and make it look like a currentdump
3729: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
3730: return if ($tmp[0] =~ /^(error:|no_such_host)/);
3731: my %hash = @tmp;
3732: @tmp=();
3733: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
3734: } else {
3735: my @pairs=split(/\&/,$rep);
3736: foreach my $pair (@pairs) {
3737: my ($key,$value)=split(/=/,$pair,2);
3738: my ($symb,$param) = split(/:/,$key);
3739: $returnhash{&unescape($symb)}->{&unescape($param)} =
3740: &thaw_unescape($value);
3741: }
3742: }
3743: return %returnhash;
3744: }
3745:
3746: sub convert_dump_to_currentdump{
3747: my %hash = %{shift()};
3748: my %returnhash;
3749: # Code ripped from lond, essentially. The only difference
3750: # here is the unescaping done by lonnet::dump(). Conceivably
3751: # we might run in to problems with parameter names =~ /^v\./
3752: while (my ($key,$value) = each(%hash)) {
3753: my ($v,$symb,$param) = split(/:/,$key);
3754: $symb = &unescape($symb);
3755: $param = &unescape($param);
3756: next if ($v eq 'version' || $symb eq 'keys');
3757: next if (exists($returnhash{$symb}) &&
3758: exists($returnhash{$symb}->{$param}) &&
3759: $returnhash{$symb}->{'v.'.$param} > $v);
3760: $returnhash{$symb}->{$param}=$value;
3761: $returnhash{$symb}->{'v.'.$param}=$v;
3762: }
3763: #
3764: # Remove all of the keys in the hashes which keep track of
3765: # the version of the parameter.
3766: while (my ($symb,$param_hash) = each(%returnhash)) {
3767: # use a foreach because we are going to delete from the hash.
3768: foreach my $key (keys(%$param_hash)) {
3769: delete($param_hash->{$key}) if ($key =~ /^v\./);
3770: }
3771: }
3772: return \%returnhash;
3773: }
3774:
3775: # ------------------------------------------------------ critical inc interface
3776:
3777: sub cinc {
3778: return &inc(@_,'critical');
3779: }
3780:
3781: # --------------------------------------------------------------- inc interface
3782:
3783: sub inc {
3784: my ($namespace,$store,$udomain,$uname,$critical) = @_;
3785: if (!$udomain) { $udomain=$env{'user.domain'}; }
3786: if (!$uname) { $uname=$env{'user.name'}; }
3787: my $uhome=&homeserver($uname,$udomain);
3788: my $items='';
3789: if (! ref($store)) {
3790: # got a single value, so use that instead
3791: $items = &escape($store).'=&';
3792: } elsif (ref($store) eq 'SCALAR') {
3793: $items = &escape($$store).'=&';
3794: } elsif (ref($store) eq 'ARRAY') {
3795: $items = join('=&',map {&escape($_);} @{$store});
3796: } elsif (ref($store) eq 'HASH') {
3797: while (my($key,$value) = each(%{$store})) {
3798: $items.= &escape($key).'='.&escape($value).'&';
3799: }
3800: }
3801: $items=~s/\&$//;
3802: if ($critical) {
3803: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
3804: } else {
3805: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
3806: }
3807: }
3808:
3809: # --------------------------------------------------------------- put interface
3810:
3811: sub put {
3812: my ($namespace,$storehash,$udomain,$uname)=@_;
3813: if (!$udomain) { $udomain=$env{'user.domain'}; }
3814: if (!$uname) { $uname=$env{'user.name'}; }
3815: my $uhome=&homeserver($uname,$udomain);
3816: my $items='';
3817: foreach my $item (keys(%$storehash)) {
3818: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
3819: }
3820: $items=~s/\&$//;
3821: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
3822: }
3823:
3824: # ------------------------------------------------------------ newput interface
3825:
3826: sub newput {
3827: my ($namespace,$storehash,$udomain,$uname)=@_;
3828: if (!$udomain) { $udomain=$env{'user.domain'}; }
3829: if (!$uname) { $uname=$env{'user.name'}; }
3830: my $uhome=&homeserver($uname,$udomain);
3831: my $items='';
3832: foreach my $key (keys(%$storehash)) {
3833: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3834: }
3835: $items=~s/\&$//;
3836: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
3837: }
3838:
3839: # --------------------------------------------------------- putstore interface
3840:
3841: sub putstore {
3842: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
3843: if (!$udomain) { $udomain=$env{'user.domain'}; }
3844: if (!$uname) { $uname=$env{'user.name'}; }
3845: my $uhome=&homeserver($uname,$udomain);
3846: my $items='';
3847: foreach my $key (keys(%$storehash)) {
3848: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
3849: }
3850: $items=~s/\&$//;
3851: my $esc_symb=&escape($symb);
3852: my $esc_v=&escape($version);
3853: my $reply =
3854: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
3855: $uhome);
3856: if ($reply eq 'unknown_cmd') {
3857: # gfall back to way things use to be done
3858: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
3859: $uname);
3860: }
3861: return $reply;
3862: }
3863:
3864: sub old_putstore {
3865: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
3866: if (!$udomain) { $udomain=$env{'user.domain'}; }
3867: if (!$uname) { $uname=$env{'user.name'}; }
3868: my $uhome=&homeserver($uname,$udomain);
3869: my %newstorehash;
3870: foreach my $item (keys(%$storehash)) {
3871: my $key = $version.':'.&escape($symb).':'.$item;
3872: $newstorehash{$key} = $storehash->{$item};
3873: }
3874: my $items='';
3875: my %allitems = ();
3876: foreach my $item (keys(%newstorehash)) {
3877: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
3878: my $key = $1.':keys:'.$2;
3879: $allitems{$key} .= $3.':';
3880: }
3881: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
3882: }
3883: foreach my $item (keys(%allitems)) {
3884: $allitems{$item} =~ s/\:$//;
3885: $items.= $item.'='.$allitems{$item}.'&';
3886: }
3887: $items=~s/\&$//;
3888: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
3889: }
3890:
3891: # ------------------------------------------------------ critical put interface
3892:
3893: sub cput {
3894: my ($namespace,$storehash,$udomain,$uname)=@_;
3895: if (!$udomain) { $udomain=$env{'user.domain'}; }
3896: if (!$uname) { $uname=$env{'user.name'}; }
3897: my $uhome=&homeserver($uname,$udomain);
3898: my $items='';
3899: foreach my $item (keys(%$storehash)) {
3900: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
3901: }
3902: $items=~s/\&$//;
3903: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
3904: }
3905:
3906: # -------------------------------------------------------------- eget interface
3907:
3908: sub eget {
3909: my ($namespace,$storearr,$udomain,$uname)=@_;
3910: my $items='';
3911: foreach my $item (@$storearr) {
3912: $items.=&escape($item).'&';
3913: }
3914: $items=~s/\&$//;
3915: if (!$udomain) { $udomain=$env{'user.domain'}; }
3916: if (!$uname) { $uname=$env{'user.name'}; }
3917: my $uhome=&homeserver($uname,$udomain);
3918: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
3919: my @pairs=split(/\&/,$rep);
3920: my %returnhash=();
3921: my $i=0;
3922: foreach my $item (@$storearr) {
3923: $returnhash{$item}=&thaw_unescape($pairs[$i]);
3924: $i++;
3925: }
3926: return %returnhash;
3927: }
3928:
3929: # ------------------------------------------------------------ tmpput interface
3930: sub tmpput {
3931: my ($storehash,$server,$context)=@_;
3932: my $items='';
3933: foreach my $item (keys(%$storehash)) {
3934: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
3935: }
3936: $items=~s/\&$//;
3937: if (defined($context)) {
3938: $items .= ':'.&escape($context);
3939: }
3940: return &reply("tmpput:$items",$server);
3941: }
3942:
3943: # ------------------------------------------------------------ tmpget interface
3944: sub tmpget {
3945: my ($token,$server)=@_;
3946: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
3947: my $rep=&reply("tmpget:$token",$server);
3948: my %returnhash;
3949: foreach my $item (split(/\&/,$rep)) {
3950: my ($key,$value)=split(/=/,$item);
3951: $returnhash{&unescape($key)}=&thaw_unescape($value);
3952: }
3953: return %returnhash;
3954: }
3955:
3956: # ------------------------------------------------------------ tmpget interface
3957: sub tmpdel {
3958: my ($token,$server)=@_;
3959: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
3960: return &reply("tmpdel:$token",$server);
3961: }
3962:
3963: # -------------------------------------------------- portfolio access checking
3964:
3965: sub portfolio_access {
3966: my ($requrl) = @_;
3967: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
3968: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
3969: if ($result) {
3970: my %setters;
3971: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
3972: my ($startblock,$endblock) =
3973: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
3974: if ($startblock && $endblock) {
3975: return 'B';
3976: }
3977: } else {
3978: my ($startblock,$endblock) =
3979: &Apache::loncommon::blockcheck(\%setters,'port');
3980: if ($startblock && $endblock) {
3981: return 'B';
3982: }
3983: }
3984: }
3985: if ($result eq 'ok') {
3986: return 'F';
3987: } elsif ($result =~ /^[^:]+:guest_/) {
3988: return 'A';
3989: }
3990: return '';
3991: }
3992:
3993: sub get_portfolio_access {
3994: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
3995:
3996: if (!ref($access_hash)) {
3997: my $current_perms = &get_portfile_permissions($udom,$unum);
3998: my %access_controls = &get_access_controls($current_perms,$group,
3999: $file_name);
4000: $access_hash = $access_controls{$file_name};
4001: }
4002:
4003: my ($public,$guest,@domains,@users,@courses,@groups);
4004: my $now = time;
4005: if (ref($access_hash) eq 'HASH') {
4006: foreach my $key (keys(%{$access_hash})) {
4007: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
4008: if ($start > $now) {
4009: next;
4010: }
4011: if ($end && $end<$now) {
4012: next;
4013: }
4014: if ($scope eq 'public') {
4015: $public = $key;
4016: last;
4017: } elsif ($scope eq 'guest') {
4018: $guest = $key;
4019: } elsif ($scope eq 'domains') {
4020: push(@domains,$key);
4021: } elsif ($scope eq 'users') {
4022: push(@users,$key);
4023: } elsif ($scope eq 'course') {
4024: push(@courses,$key);
4025: } elsif ($scope eq 'group') {
4026: push(@groups,$key);
4027: }
4028: }
4029: if ($public) {
4030: return 'ok';
4031: }
4032: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4033: if ($guest) {
4034: return $guest;
4035: }
4036: } else {
4037: if (@domains > 0) {
4038: foreach my $domkey (@domains) {
4039: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
4040: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
4041: return 'ok';
4042: }
4043: }
4044: }
4045: }
4046: if (@users > 0) {
4047: foreach my $userkey (@users) {
4048: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
4049: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
4050: if (ref($item) eq 'HASH') {
4051: if (($item->{'uname'} eq $env{'user.name'}) &&
4052: ($item->{'udom'} eq $env{'user.domain'})) {
4053: return 'ok';
4054: }
4055: }
4056: }
4057: }
4058: }
4059: }
4060: my %roleshash;
4061: my @courses_and_groups = @courses;
4062: push(@courses_and_groups,@groups);
4063: if (@courses_and_groups > 0) {
4064: my (%allgroups,%allroles);
4065: my ($start,$end,$role,$sec,$group);
4066: foreach my $envkey (%env) {
4067: if ($envkey =~ m-^user\.role\.(gr|cc|in|ta|ep|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
4068: my $cid = $2.'_'.$3;
4069: if ($1 eq 'gr') {
4070: $group = $4;
4071: $allgroups{$cid}{$group} = $env{$envkey};
4072: } else {
4073: if ($4 eq '') {
4074: $sec = 'none';
4075: } else {
4076: $sec = $4;
4077: }
4078: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4079: }
4080: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
4081: my $cid = $2.'_'.$3;
4082: if ($4 eq '') {
4083: $sec = 'none';
4084: } else {
4085: $sec = $4;
4086: }
4087: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4088: }
4089: }
4090: if (keys(%allroles) == 0) {
4091: return;
4092: }
4093: foreach my $key (@courses_and_groups) {
4094: my %content = %{$$access_hash{$key}};
4095: my $cnum = $content{'number'};
4096: my $cdom = $content{'domain'};
4097: my $cid = $cdom.'_'.$cnum;
4098: if (!exists($allroles{$cid})) {
4099: next;
4100: }
4101: foreach my $role_id (keys(%{$content{'roles'}})) {
4102: my @sections = @{$content{'roles'}{$role_id}{'section'}};
4103: my @groups = @{$content{'roles'}{$role_id}{'group'}};
4104: my @status = @{$content{'roles'}{$role_id}{'access'}};
4105: my @roles = @{$content{'roles'}{$role_id}{'role'}};
4106: foreach my $role (keys(%{$allroles{$cid}})) {
4107: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
4108: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
4109: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
4110: if (grep/^all$/,@sections) {
4111: return 'ok';
4112: } else {
4113: if (grep/^$sec$/,@sections) {
4114: return 'ok';
4115: }
4116: }
4117: }
4118: }
4119: if (keys(%{$allgroups{$cid}}) == 0) {
4120: if (grep/^none$/,@groups) {
4121: return 'ok';
4122: }
4123: } else {
4124: if (grep/^all$/,@groups) {
4125: return 'ok';
4126: }
4127: foreach my $group (keys(%{$allgroups{$cid}})) {
4128: if (grep/^$group$/,@groups) {
4129: return 'ok';
4130: }
4131: }
4132: }
4133: }
4134: }
4135: }
4136: }
4137: }
4138: if ($guest) {
4139: return $guest;
4140: }
4141: }
4142: }
4143: return;
4144: }
4145:
4146: sub course_group_datechecker {
4147: my ($dates,$now,$status) = @_;
4148: my ($start,$end) = split(/\./,$dates);
4149: if (!$start && !$end) {
4150: return 'ok';
4151: }
4152: if (grep/^active$/,@{$status}) {
4153: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
4154: return 'ok';
4155: }
4156: }
4157: if (grep/^previous$/,@{$status}) {
4158: if ($end > $now ) {
4159: return 'ok';
4160: }
4161: }
4162: if (grep/^future$/,@{$status}) {
4163: if ($start > $now) {
4164: return 'ok';
4165: }
4166: }
4167: return;
4168: }
4169:
4170: sub parse_portfolio_url {
4171: my ($url) = @_;
4172:
4173: my ($type,$udom,$unum,$group,$file_name);
4174:
4175: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
4176: $type = 1;
4177: $udom = $1;
4178: $unum = $2;
4179: $file_name = $3;
4180: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
4181: $type = 2;
4182: $udom = $1;
4183: $unum = $2;
4184: $group = $3;
4185: $file_name = $3.'/'.$4;
4186: }
4187: if (wantarray) {
4188: return ($type,$udom,$unum,$file_name,$group);
4189: }
4190: return $type;
4191: }
4192:
4193: sub is_portfolio_url {
4194: my ($url) = @_;
4195: return scalar(&parse_portfolio_url($url));
4196: }
4197:
4198: sub is_portfolio_file {
4199: my ($file) = @_;
4200: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
4201: return 1;
4202: }
4203: return;
4204: }
4205:
4206:
4207: # ---------------------------------------------- Custom access rule evaluation
4208:
4209: sub customaccess {
4210: my ($priv,$uri)=@_;
4211: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
4212: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
4213: $udom = &LONCAPA::clean_domain($udom);
4214: $ucrs = &LONCAPA::clean_username($ucrs);
4215: my $access=0;
4216: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
4217: my ($effect,$realm,$role,$type)=split(/\:/,$right);
4218: if ($type eq 'user') {
4219: foreach my $scope (split(/\s*\,\s*/,$realm)) {
4220: my ($tdom,$tuname)=split(m{/},$scope);
4221: if ($tdom) {
4222: if ($tdom ne $env{'user.domain'}) { next; }
4223: }
4224: if ($tuname) {
4225: if ($tuname ne $env{'user.name'}) { next; }
4226: }
4227: $access=($effect eq 'allow');
4228: last;
4229: }
4230: } else {
4231: if ($role) {
4232: if ($role ne $urole) { next; }
4233: }
4234: foreach my $scope (split(/\s*\,\s*/,$realm)) {
4235: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
4236: if ($tdom) {
4237: if ($tdom ne $udom) { next; }
4238: }
4239: if ($tcrs) {
4240: if ($tcrs ne $ucrs) { next; }
4241: }
4242: if ($tsec) {
4243: if ($tsec ne $usec) { next; }
4244: }
4245: $access=($effect eq 'allow');
4246: last;
4247: }
4248: if ($realm eq '' && $role eq '') {
4249: $access=($effect eq 'allow');
4250: }
4251: }
4252: }
4253: return $access;
4254: }
4255:
4256: # ------------------------------------------------- Check for a user privilege
4257:
4258: sub allowed {
4259: my ($priv,$uri,$symb,$role)=@_;
4260: my $ver_orguri=$uri;
4261: $uri=&deversion($uri);
4262: my $orguri=$uri;
4263: $uri=&declutter($uri);
4264:
4265: if ($priv eq 'evb') {
4266: # Evade communication block restrictions for specified role in a course
4267: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
4268: return $1;
4269: } else {
4270: return;
4271: }
4272: }
4273:
4274: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
4275: # Free bre access to adm and meta resources
4276: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
4277: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
4278: && ($priv eq 'bre')) {
4279: return 'F';
4280: }
4281:
4282: # Free bre access to user's own portfolio contents
4283: my ($space,$domain,$name,@dir)=split('/',$uri);
4284: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
4285: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
4286: my %setters;
4287: my ($startblock,$endblock) =
4288: &Apache::loncommon::blockcheck(\%setters,'port');
4289: if ($startblock && $endblock) {
4290: return 'B';
4291: } else {
4292: return 'F';
4293: }
4294: }
4295:
4296: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
4297: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
4298: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
4299: if (exists($env{'request.course.id'})) {
4300: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4301: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4302: if (($domain eq $cdom) && ($name eq $cnum)) {
4303: my $courseprivid=$env{'request.course.id'};
4304: $courseprivid=~s/\_/\//;
4305: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
4306: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
4307: return $1;
4308: } else {
4309: if ($env{'request.course.sec'}) {
4310: $courseprivid.='/'.$env{'request.course.sec'};
4311: }
4312: if ($env{'user.priv.'.$env{'request.role'}.'./'.
4313: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
4314: return $2;
4315: }
4316: }
4317: }
4318: }
4319: }
4320:
4321: # Free bre to public access
4322:
4323: if ($priv eq 'bre') {
4324: my $copyright=&metadata($uri,'copyright');
4325: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
4326: return 'F';
4327: }
4328: if ($copyright eq 'priv') {
4329: $uri=~/([^\/]+)\/([^\/]+)\//;
4330: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
4331: return '';
4332: }
4333: }
4334: if ($copyright eq 'domain') {
4335: $uri=~/([^\/]+)\/([^\/]+)\//;
4336: unless (($env{'user.domain'} eq $1) ||
4337: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
4338: return '';
4339: }
4340: }
4341: if ($env{'request.role'}=~ /li\.\//) {
4342: # Library role, so allow browsing of resources in this domain.
4343: return 'F';
4344: }
4345: if ($copyright eq 'custom') {
4346: unless (&customaccess($priv,$uri)) { return ''; }
4347: }
4348: }
4349: # Domain coordinator is trying to create a course
4350: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
4351: # uri is the requested domain in this case.
4352: # comparison to 'request.role.domain' shows if the user has selected
4353: # a role of dc for the domain in question.
4354: return 'F' if ($uri eq $env{'request.role.domain'});
4355: }
4356:
4357: my $thisallowed='';
4358: my $statecond=0;
4359: my $courseprivid='';
4360:
4361: # Course
4362:
4363: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
4364: $thisallowed.=$1;
4365: }
4366:
4367: # Domain
4368:
4369: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
4370: =~/\Q$priv\E\&([^\:]*)/) {
4371: $thisallowed.=$1;
4372: }
4373:
4374: # Course: uri itself is a course
4375: my $courseuri=$uri;
4376: $courseuri=~s/\_(\d)/\/$1/;
4377: $courseuri=~s/^([^\/])/\/$1/;
4378:
4379: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
4380: =~/\Q$priv\E\&([^\:]*)/) {
4381: $thisallowed.=$1;
4382: }
4383:
4384: # URI is an uploaded document for this course, default permissions don't matter
4385: # not allowing 'edit' access (editupload) to uploaded course docs
4386: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
4387: $thisallowed='';
4388: my ($match)=&is_on_map($uri);
4389: if ($match) {
4390: if ($env{'user.priv.'.$env{'request.role'}.'./'}
4391: =~/\Q$priv\E\&([^\:]*)/) {
4392: $thisallowed.=$1;
4393: }
4394: } else {
4395: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
4396: if ($refuri) {
4397: if ($refuri =~ m|^/adm/|) {
4398: $thisallowed='F';
4399: } else {
4400: $refuri=&declutter($refuri);
4401: my ($match) = &is_on_map($refuri);
4402: if ($match) {
4403: $thisallowed='F';
4404: }
4405: }
4406: }
4407: }
4408: }
4409:
4410: if ($priv eq 'bre'
4411: && $thisallowed ne 'F'
4412: && $thisallowed ne '2'
4413: && &is_portfolio_url($uri)) {
4414: $thisallowed = &portfolio_access($uri);
4415: }
4416:
4417: # Full access at system, domain or course-wide level? Exit.
4418:
4419: if ($thisallowed=~/F/) {
4420: return 'F';
4421: }
4422:
4423: # If this is generating or modifying users, exit with special codes
4424:
4425: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
4426: if (($priv eq 'cca') || ($priv eq 'caa')) {
4427: my ($audom,$auname)=split('/',$uri);
4428: # no author name given, so this just checks on the general right to make a co-author in this domain
4429: unless ($auname) { return $thisallowed; }
4430: # an author name is given, so we are about to actually make a co-author for a certain account
4431: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
4432: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
4433: ($audom ne $env{'request.role.domain'}))) { return ''; }
4434: }
4435: return $thisallowed;
4436: }
4437: #
4438: # Gathered so far: system, domain and course wide privileges
4439: #
4440: # Course: See if uri or referer is an individual resource that is part of
4441: # the course
4442:
4443: if ($env{'request.course.id'}) {
4444:
4445: $courseprivid=$env{'request.course.id'};
4446: if ($env{'request.course.sec'}) {
4447: $courseprivid.='/'.$env{'request.course.sec'};
4448: }
4449: $courseprivid=~s/\_/\//;
4450: my $checkreferer=1;
4451: my ($match,$cond)=&is_on_map($uri);
4452: if ($match) {
4453: $statecond=$cond;
4454: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
4455: =~/\Q$priv\E\&([^\:]*)/) {
4456: $thisallowed.=$1;
4457: $checkreferer=0;
4458: }
4459: }
4460:
4461: if ($checkreferer) {
4462: my $refuri=$env{'httpref.'.$orguri};
4463: unless ($refuri) {
4464: foreach my $key (keys(%env)) {
4465: if ($key=~/^httpref\..*\*/) {
4466: my $pattern=$key;
4467: $pattern=~s/^httpref\.\/res\///;
4468: $pattern=~s/\*/\[\^\/\]\+/g;
4469: $pattern=~s/\//\\\//g;
4470: if ($orguri=~/$pattern/) {
4471: $refuri=$env{$key};
4472: }
4473: }
4474: }
4475: }
4476:
4477: if ($refuri) {
4478: $refuri=&declutter($refuri);
4479: my ($match,$cond)=&is_on_map($refuri);
4480: if ($match) {
4481: my $refstatecond=$cond;
4482: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
4483: =~/\Q$priv\E\&([^\:]*)/) {
4484: $thisallowed.=$1;
4485: $uri=$refuri;
4486: $statecond=$refstatecond;
4487: }
4488: }
4489: }
4490: }
4491: }
4492:
4493: #
4494: # Gathered now: all privileges that could apply, and condition number
4495: #
4496: #
4497: # Full or no access?
4498: #
4499:
4500: if ($thisallowed=~/F/) {
4501: return 'F';
4502: }
4503:
4504: unless ($thisallowed) {
4505: return '';
4506: }
4507:
4508: # Restrictions exist, deal with them
4509: #
4510: # C:according to course preferences
4511: # R:according to resource settings
4512: # L:unless locked
4513: # X:according to user session state
4514: #
4515:
4516: # Possibly locked functionality, check all courses
4517: # Locks might take effect only after 10 minutes cache expiration for other
4518: # courses, and 2 minutes for current course
4519:
4520: my $envkey;
4521: if ($thisallowed=~/L/) {
4522: foreach $envkey (keys %env) {
4523: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
4524: my $courseid=$2;
4525: my $roleid=$1.'.'.$2;
4526: $courseid=~s/^\///;
4527: my $expiretime=600;
4528: if ($env{'request.role'} eq $roleid) {
4529: $expiretime=120;
4530: }
4531: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
4532: my $prefix='course.'.$cdom.'_'.$cnum.'.';
4533: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
4534: &coursedescription($courseid,{'freshen_cache' => 1});
4535: }
4536: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
4537: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
4538: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
4539: &log($env{'user.domain'},$env{'user.name'},
4540: $env{'user.home'},
4541: 'Locked by res: '.$priv.' for '.$uri.' due to '.
4542: $cdom.'/'.$cnum.'/'.$csec.' expire '.
4543: $env{$prefix.'priv.'.$priv.'.lock.expire'});
4544: return '';
4545: }
4546: }
4547: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
4548: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
4549: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
4550: &log($env{'user.domain'},$env{'user.name'},
4551: $env{'user.home'},
4552: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
4553: $cdom.'/'.$cnum.'/'.$csec.' expire '.
4554: $env{$prefix.'priv.'.$priv.'.lock.expire'});
4555: return '';
4556: }
4557: }
4558: }
4559: }
4560: }
4561:
4562: #
4563: # Rest of the restrictions depend on selected course
4564: #
4565:
4566: unless ($env{'request.course.id'}) {
4567: if ($thisallowed eq 'A') {
4568: return 'A';
4569: } elsif ($thisallowed eq 'B') {
4570: return 'B';
4571: } else {
4572: return '1';
4573: }
4574: }
4575:
4576: #
4577: # Now user is definitely in a course
4578: #
4579:
4580:
4581: # Course preferences
4582:
4583: if ($thisallowed=~/C/) {
4584: my $rolecode=(split(/\./,$env{'request.role'}))[0];
4585: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
4586: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
4587: =~/\Q$rolecode\E/) {
4588: if ($priv ne 'pch') {
4589: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
4590: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
4591: $env{'request.course.id'});
4592: }
4593: return '';
4594: }
4595:
4596: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
4597: =~/\Q$unamedom\E/) {
4598: if ($priv ne 'pch') {
4599: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
4600: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
4601: $env{'request.course.id'});
4602: }
4603: return '';
4604: }
4605: }
4606:
4607: # Resource preferences
4608:
4609: if ($thisallowed=~/R/) {
4610: my $rolecode=(split(/\./,$env{'request.role'}))[0];
4611: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
4612: if ($priv ne 'pch') {
4613: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
4614: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
4615: }
4616: return '';
4617: }
4618: }
4619:
4620: # Restricted by state or randomout?
4621:
4622: if ($thisallowed=~/X/) {
4623: if ($env{'acc.randomout'}) {
4624: if (!$symb) { $symb=&symbread($uri,1); }
4625: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
4626: return '';
4627: }
4628: }
4629: if (&condval($statecond)) {
4630: return '2';
4631: } else {
4632: return '';
4633: }
4634: }
4635:
4636: if ($thisallowed eq 'A') {
4637: return 'A';
4638: } elsif ($thisallowed eq 'B') {
4639: return 'B';
4640: }
4641: return 'F';
4642: }
4643:
4644: sub split_uri_for_cond {
4645: my $uri=&deversion(&declutter(shift));
4646: my @uriparts=split(/\//,$uri);
4647: my $filename=pop(@uriparts);
4648: my $pathname=join('/',@uriparts);
4649: return ($pathname,$filename);
4650: }
4651: # --------------------------------------------------- Is a resource on the map?
4652:
4653: sub is_on_map {
4654: my ($pathname,$filename) = &split_uri_for_cond(shift);
4655: #Trying to find the conditional for the file
4656: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
4657: /\&\Q$filename\E\:([\d\|]+)\&/);
4658: if ($match) {
4659: return (1,$1);
4660: } else {
4661: return (0,0);
4662: }
4663: }
4664:
4665: # --------------------------------------------------------- Get symb from alias
4666:
4667: sub get_symb_from_alias {
4668: my $symb=shift;
4669: my ($map,$resid,$url)=&decode_symb($symb);
4670: # Already is a symb
4671: if ($url) { return $symb; }
4672: # Must be an alias
4673: my $aliassymb='';
4674: my %bighash;
4675: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
4676: &GDBM_READER(),0640)) {
4677: my $rid=$bighash{'mapalias_'.$symb};
4678: if ($rid) {
4679: my ($mapid,$resid)=split(/\./,$rid);
4680: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
4681: $resid,$bighash{'src_'.$rid});
4682: }
4683: untie %bighash;
4684: }
4685: return $aliassymb;
4686: }
4687:
4688: # ----------------------------------------------------------------- Define Role
4689:
4690: sub definerole {
4691: if (allowed('mcr','/')) {
4692: my ($rolename,$sysrole,$domrole,$courole)=@_;
4693: foreach my $role (split(':',$sysrole)) {
4694: my ($crole,$cqual)=split(/\&/,$role);
4695: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
4696: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
4697: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
4698: return "refused:s:$crole&$cqual";
4699: }
4700: }
4701: }
4702: foreach my $role (split(':',$domrole)) {
4703: my ($crole,$cqual)=split(/\&/,$role);
4704: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
4705: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
4706: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
4707: return "refused:d:$crole&$cqual";
4708: }
4709: }
4710: }
4711: foreach my $role (split(':',$courole)) {
4712: my ($crole,$cqual)=split(/\&/,$role);
4713: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
4714: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
4715: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
4716: return "refused:c:$crole&$cqual";
4717: }
4718: }
4719: }
4720: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
4721: "$env{'user.domain'}:$env{'user.name'}:".
4722: "rolesdef_$rolename=".
4723: escape($sysrole.'_'.$domrole.'_'.$courole);
4724: return reply($command,$env{'user.home'});
4725: } else {
4726: return 'refused';
4727: }
4728: }
4729:
4730: # ---------------- Make a metadata query against the network of library servers
4731:
4732: sub metadata_query {
4733: my ($query,$custom,$customshow,$server_array)=@_;
4734: my %rhash;
4735: my %libserv = &all_library();
4736: my @server_list = (defined($server_array) ? @$server_array
4737: : keys(%libserv) );
4738: for my $server (@server_list) {
4739: unless ($custom or $customshow) {
4740: my $reply=&reply("querysend:".&escape($query),$server);
4741: $rhash{$server}=$reply;
4742: }
4743: else {
4744: my $reply=&reply("querysend:".&escape($query).':'.
4745: &escape($custom).':'.&escape($customshow),
4746: $server);
4747: $rhash{$server}=$reply;
4748: }
4749: }
4750: return \%rhash;
4751: }
4752:
4753: # ----------------------------------------- Send log queries and wait for reply
4754:
4755: sub log_query {
4756: my ($uname,$udom,$query,%filters)=@_;
4757: my $uhome=&homeserver($uname,$udom);
4758: if ($uhome eq 'no_host') { return 'error: no_host'; }
4759: my $uhost=&hostname($uhome);
4760: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
4761: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
4762: $uhome);
4763: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
4764: return get_query_reply($queryid);
4765: }
4766:
4767: # -------------------------- Update MySQL table for portfolio file
4768:
4769: sub update_portfolio_table {
4770: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
4771: my $homeserver = &homeserver($uname,$udom);
4772: my $queryid=
4773: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
4774: ':'.&escape($file_name).':'.$action,$homeserver);
4775: my $reply = &get_query_reply($queryid);
4776: return $reply;
4777: }
4778:
4779: # -------------------------- Update MySQL allusers table
4780:
4781: sub update_allusers_table {
4782: my ($uname,$udom,$names) = @_;
4783: my $homeserver = &homeserver($uname,$udom);
4784: my $queryid=
4785: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
4786: 'lastname='.&escape($names->{'lastname'}).'%%'.
4787: 'firstname='.&escape($names->{'firstname'}).'%%'.
4788: 'middlename='.&escape($names->{'middlename'}).'%%'.
4789: 'generation='.&escape($names->{'generation'}).'%%'.
4790: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
4791: 'id='.&escape($names->{'id'}),$homeserver);
4792: my $reply = &get_query_reply($queryid);
4793: return $reply;
4794: }
4795:
4796: # ------- Request retrieval of institutional classlists for course(s)
4797:
4798: sub fetch_enrollment_query {
4799: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
4800: my $homeserver;
4801: my $maxtries = 1;
4802: if ($context eq 'automated') {
4803: $homeserver = $perlvar{'lonHostID'};
4804: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
4805: } else {
4806: $homeserver = &homeserver($cnum,$dom);
4807: }
4808: my $host=&hostname($homeserver);
4809: my $cmd = '';
4810: foreach my $affiliate (keys %{$affiliatesref}) {
4811: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
4812: }
4813: $cmd =~ s/%%$//;
4814: $cmd = &escape($cmd);
4815: my $query = 'fetchenrollment';
4816: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
4817: unless ($queryid=~/^\Q$host\E\_/) {
4818: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
4819: return 'error: '.$queryid;
4820: }
4821: my $reply = &get_query_reply($queryid);
4822: my $tries = 1;
4823: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
4824: $reply = &get_query_reply($queryid);
4825: $tries ++;
4826: }
4827: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
4828: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
4829: } else {
4830: my @responses = split(/:/,$reply);
4831: if ($homeserver eq $perlvar{'lonHostID'}) {
4832: foreach my $line (@responses) {
4833: my ($key,$value) = split(/=/,$line,2);
4834: $$replyref{$key} = $value;
4835: }
4836: } else {
4837: my $pathname = $perlvar{'lonDaemons'}.'/tmp';
4838: foreach my $line (@responses) {
4839: my ($key,$value) = split(/=/,$line);
4840: $$replyref{$key} = $value;
4841: if ($value > 0) {
4842: foreach my $item (@{$$affiliatesref{$key}}) {
4843: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
4844: my $destname = $pathname.'/'.$filename;
4845: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
4846: if ($xml_classlist =~ /^error/) {
4847: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
4848: } else {
4849: if ( open(FILE,">$destname") ) {
4850: print FILE &unescape($xml_classlist);
4851: close(FILE);
4852: } else {
4853: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
4854: }
4855: }
4856: }
4857: }
4858: }
4859: }
4860: return 'ok';
4861: }
4862: return 'error';
4863: }
4864:
4865: sub get_query_reply {
4866: my $queryid=shift;
4867: my $replyfile=$perlvar{'lonDaemons'}.'/tmp/'.$queryid;
4868: my $reply='';
4869: for (1..100) {
4870: sleep 2;
4871: if (-e $replyfile.'.end') {
4872: if (open(my $fh,$replyfile)) {
4873: $reply = join('',<$fh>);
4874: close($fh);
4875: } else { return 'error: reply_file_error'; }
4876: return &unescape($reply);
4877: }
4878: }
4879: return 'timeout:'.$queryid;
4880: }
4881:
4882: sub courselog_query {
4883: #
4884: # possible filters:
4885: # url: url or symb
4886: # username
4887: # domain
4888: # action: view, submit, grade
4889: # start: timestamp
4890: # end: timestamp
4891: #
4892: my (%filters)=@_;
4893: unless ($env{'request.course.id'}) { return 'no_course'; }
4894: if ($filters{'url'}) {
4895: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
4896: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
4897: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
4898: }
4899: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
4900: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4901: return &log_query($cname,$cdom,'courselog',%filters);
4902: }
4903:
4904: sub userlog_query {
4905: #
4906: # possible filters:
4907: # action: log check role
4908: # start: timestamp
4909: # end: timestamp
4910: #
4911: my ($uname,$udom,%filters)=@_;
4912: return &log_query($uname,$udom,'userlog',%filters);
4913: }
4914:
4915: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
4916:
4917: sub auto_run {
4918: my ($cnum,$cdom) = @_;
4919: my $response = 0;
4920: my $settings;
4921: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
4922: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
4923: $settings = $domconfig{'autoenroll'};
4924: if ($settings->{'run'} eq '1') {
4925: $response = 1;
4926: }
4927: } else {
4928: my $homeserver;
4929: if (&is_course($cdom,$cnum)) {
4930: $homeserver = &homeserver($cnum,$cdom);
4931: } else {
4932: $homeserver = &domain($cdom,'primary');
4933: }
4934: if ($homeserver ne 'no_host') {
4935: $response = &reply('autorun:'.$cdom,$homeserver);
4936: }
4937: }
4938: return $response;
4939: }
4940:
4941: sub auto_get_sections {
4942: my ($cnum,$cdom,$inst_coursecode) = @_;
4943: my $homeserver = &homeserver($cnum,$cdom);
4944: my @secs = ();
4945: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
4946: unless ($response eq 'refused') {
4947: @secs = split(/:/,$response);
4948: }
4949: return @secs;
4950: }
4951:
4952: sub auto_new_course {
4953: my ($cnum,$cdom,$inst_course_id,$owner) = @_;
4954: my $homeserver = &homeserver($cnum,$cdom);
4955: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.$owner.':'.$cdom,$homeserver));
4956: return $response;
4957: }
4958:
4959: sub auto_validate_courseID {
4960: my ($cnum,$cdom,$inst_course_id) = @_;
4961: my $homeserver = &homeserver($cnum,$cdom);
4962: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
4963: return $response;
4964: }
4965:
4966: sub auto_create_password {
4967: my ($cnum,$cdom,$authparam,$udom) = @_;
4968: my ($homeserver,$response);
4969: my $create_passwd = 0;
4970: my $authchk = '';
4971: if ($udom =~ /^$match_domain$/) {
4972: $homeserver = &domain($udom,'primary');
4973: }
4974: if ($homeserver eq '') {
4975: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
4976: $homeserver = &homeserver($cnum,$cdom);
4977: }
4978: }
4979: if ($homeserver eq '') {
4980: $authchk = 'nodomain';
4981: } else {
4982: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
4983: if ($response eq 'refused') {
4984: $authchk = 'refused';
4985: } else {
4986: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
4987: }
4988: }
4989: return ($authparam,$create_passwd,$authchk);
4990: }
4991:
4992: sub auto_photo_permission {
4993: my ($cnum,$cdom,$students) = @_;
4994: my $homeserver = &homeserver($cnum,$cdom);
4995: my ($outcome,$perm_reqd,$conditions) =
4996: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
4997: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
4998: return (undef,undef);
4999: }
5000: return ($outcome,$perm_reqd,$conditions);
5001: }
5002:
5003: sub auto_checkphotos {
5004: my ($uname,$udom,$pid) = @_;
5005: my $homeserver = &homeserver($uname,$udom);
5006: my ($result,$resulttype);
5007: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
5008: &escape($uname).':'.&escape($pid),
5009: $homeserver));
5010: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5011: return (undef,undef);
5012: }
5013: if ($outcome) {
5014: ($result,$resulttype) = split(/:/,$outcome);
5015: }
5016: return ($result,$resulttype);
5017: }
5018:
5019: sub auto_photochoice {
5020: my ($cnum,$cdom) = @_;
5021: my $homeserver = &homeserver($cnum,$cdom);
5022: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
5023: &escape($cdom),
5024: $homeserver)));
5025: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5026: return (undef,undef);
5027: }
5028: return ($update,$comment);
5029: }
5030:
5031: sub auto_photoupdate {
5032: my ($affiliatesref,$dom,$cnum,$photo) = @_;
5033: my $homeserver = &homeserver($cnum,$dom);
5034: my $host=&hostname($homeserver);
5035: my $cmd = '';
5036: my $maxtries = 1;
5037: foreach my $affiliate (keys(%{$affiliatesref})) {
5038: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
5039: }
5040: $cmd =~ s/%%$//;
5041: $cmd = &escape($cmd);
5042: my $query = 'institutionalphotos';
5043: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
5044: unless ($queryid=~/^\Q$host\E\_/) {
5045: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
5046: return 'error: '.$queryid;
5047: }
5048: my $reply = &get_query_reply($queryid);
5049: my $tries = 1;
5050: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
5051: $reply = &get_query_reply($queryid);
5052: $tries ++;
5053: }
5054: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
5055: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
5056: } else {
5057: my @responses = split(/:/,$reply);
5058: my $outcome = shift(@responses);
5059: foreach my $item (@responses) {
5060: my ($key,$value) = split(/=/,$item);
5061: $$photo{$key} = $value;
5062: }
5063: return $outcome;
5064: }
5065: return 'error';
5066: }
5067:
5068: sub auto_instcode_format {
5069: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
5070: $cat_order) = @_;
5071: my $courses = '';
5072: my @homeservers;
5073: if ($caller eq 'global') {
5074: my %servers = &get_servers($codedom,'library');
5075: foreach my $tryserver (keys(%servers)) {
5076: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
5077: push(@homeservers,$tryserver);
5078: }
5079: }
5080: } else {
5081: push(@homeservers,&homeserver($caller,$codedom));
5082: }
5083: foreach my $code (keys(%{$instcodes})) {
5084: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
5085: }
5086: chop($courses);
5087: my $ok_response = 0;
5088: my $response;
5089: while (@homeservers > 0 && $ok_response == 0) {
5090: my $server = shift(@homeservers);
5091: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
5092: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
5093: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
5094: split(/:/,$response);
5095: %{$codes} = (%{$codes},&str2hash($codes_str));
5096: push(@{$codetitles},&str2array($codetitles_str));
5097: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
5098: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
5099: $ok_response = 1;
5100: }
5101: }
5102: if ($ok_response) {
5103: return 'ok';
5104: } else {
5105: return $response;
5106: }
5107: }
5108:
5109: sub auto_instcode_defaults {
5110: my ($domain,$returnhash,$code_order) = @_;
5111: my @homeservers;
5112:
5113: my %servers = &get_servers($domain,'library');
5114: foreach my $tryserver (keys(%servers)) {
5115: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
5116: push(@homeservers,$tryserver);
5117: }
5118: }
5119:
5120: my $response;
5121: foreach my $server (@homeservers) {
5122: $response=&reply('autoinstcodedefaults:'.$domain,$server);
5123: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
5124:
5125: foreach my $pair (split(/\&/,$response)) {
5126: my ($name,$value)=split(/\=/,$pair);
5127: if ($name eq 'code_order') {
5128: @{$code_order} = split(/\&/,&unescape($value));
5129: } else {
5130: $returnhash->{&unescape($name)}=&unescape($value);
5131: }
5132: }
5133: return 'ok';
5134: }
5135:
5136: return $response;
5137: }
5138:
5139: sub auto_validate_class_sec {
5140: my ($cdom,$cnum,$owners,$inst_class) = @_;
5141: my $homeserver = &homeserver($cnum,$cdom);
5142: my $ownerlist;
5143: if (ref($owners) eq 'ARRAY') {
5144: $ownerlist = join(',',@{$owners});
5145: } else {
5146: $ownerlist = $owners;
5147: }
5148: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
5149: &escape($ownerlist).':'.$cdom,$homeserver);
5150: return $response;
5151: }
5152:
5153: # ------------------------------------------------------- Course Group routines
5154:
5155: sub get_coursegroups {
5156: my ($cdom,$cnum,$group,$namespace) = @_;
5157: return(&dump($namespace,$cdom,$cnum,$group));
5158: }
5159:
5160: sub modify_coursegroup {
5161: my ($cdom,$cnum,$groupsettings) = @_;
5162: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
5163: }
5164:
5165: sub toggle_coursegroup_status {
5166: my ($cdom,$cnum,$group,$action) = @_;
5167: my ($from_namespace,$to_namespace);
5168: if ($action eq 'delete') {
5169: $from_namespace = 'coursegroups';
5170: $to_namespace = 'deleted_groups';
5171: } else {
5172: $from_namespace = 'deleted_groups';
5173: $to_namespace = 'coursegroups';
5174: }
5175: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
5176: if (my $tmp = &error(%curr_group)) {
5177: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
5178: return ('read error',$tmp);
5179: } else {
5180: my %savedsettings = %curr_group;
5181: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
5182: my $deloutcome;
5183: if ($result eq 'ok') {
5184: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
5185: } else {
5186: return ('write error',$result);
5187: }
5188: if ($deloutcome eq 'ok') {
5189: return 'ok';
5190: } else {
5191: return ('delete error',$deloutcome);
5192: }
5193: }
5194: }
5195:
5196: sub modify_group_roles {
5197: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs) = @_;
5198: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
5199: my $role = 'gr/'.&escape($userprivs);
5200: my ($uname,$udom) = split(/:/,$user);
5201: my $result = &assignrole($udom,$uname,$url,$role,$end,$start);
5202: if ($result eq 'ok') {
5203: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
5204: }
5205: return $result;
5206: }
5207:
5208: sub modify_coursegroup_membership {
5209: my ($cdom,$cnum,$membership) = @_;
5210: my $result = &put('groupmembership',$membership,$cdom,$cnum);
5211: return $result;
5212: }
5213:
5214: sub get_active_groups {
5215: my ($udom,$uname,$cdom,$cnum) = @_;
5216: my $now = time;
5217: my %groups = ();
5218: foreach my $key (keys(%env)) {
5219: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
5220: my ($start,$end) = split(/\./,$env{$key});
5221: if (($end!=0) && ($end<$now)) { next; }
5222: if (($start!=0) && ($start>$now)) { next; }
5223: if ($1 eq $cdom && $2 eq $cnum) {
5224: $groups{$3} = $env{$key} ;
5225: }
5226: }
5227: }
5228: return %groups;
5229: }
5230:
5231: sub get_group_membership {
5232: my ($cdom,$cnum,$group) = @_;
5233: return(&dump('groupmembership',$cdom,$cnum,$group));
5234: }
5235:
5236: sub get_users_groups {
5237: my ($udom,$uname,$courseid) = @_;
5238: my @usersgroups;
5239: my $cachetime=1800;
5240:
5241: my $hashid="$udom:$uname:$courseid";
5242: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
5243: if (defined($cached)) {
5244: @usersgroups = split(/:/,$grouplist);
5245: } else {
5246: $grouplist = '';
5247: my $courseurl = &courseid_to_courseurl($courseid);
5248: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
5249: my $access_end = $env{'course.'.$courseid.
5250: '.default_enrollment_end_date'};
5251: my $now = time;
5252: foreach my $key (keys(%roleshash)) {
5253: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
5254: my $group = $1;
5255: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
5256: my $start = $2;
5257: my $end = $1;
5258: if ($start == -1) { next; } # deleted from group
5259: if (($start!=0) && ($start>$now)) { next; }
5260: if (($end!=0) && ($end<$now)) {
5261: if ($access_end && $access_end < $now) {
5262: if ($access_end - $end < 86400) {
5263: push(@usersgroups,$group);
5264: }
5265: }
5266: next;
5267: }
5268: push(@usersgroups,$group);
5269: }
5270: }
5271: }
5272: @usersgroups = &sort_course_groups($courseid,@usersgroups);
5273: $grouplist = join(':',@usersgroups);
5274: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
5275: }
5276: return @usersgroups;
5277: }
5278:
5279: sub devalidate_getgroups_cache {
5280: my ($udom,$uname,$cdom,$cnum)=@_;
5281: my $courseid = $cdom.'_'.$cnum;
5282:
5283: my $hashid="$udom:$uname:$courseid";
5284: &devalidate_cache_new('getgroups',$hashid);
5285: }
5286:
5287: # ------------------------------------------------------------------ Plain Text
5288:
5289: sub plaintext {
5290: my ($short,$type,$cid) = @_;
5291: if ($short =~ /^cr/) {
5292: return (split('/',$short))[-1];
5293: }
5294: if (!defined($cid)) {
5295: $cid = $env{'request.course.id'};
5296: }
5297: if (defined($cid) && defined($env{'course.'.$cid.'.'.$short.'.plaintext'})) {
5298: return &Apache::lonlocal::mt($env{'course.'.$cid.'.'.$short.
5299: '.plaintext'});
5300: }
5301: my %rolenames = (
5302: Course => 'std',
5303: Group => 'alt1',
5304: );
5305: if (defined($type) &&
5306: defined($rolenames{$type}) &&
5307: defined($prp{$short}{$rolenames{$type}})) {
5308: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
5309: } else {
5310: return &Apache::lonlocal::mt($prp{$short}{'std'});
5311: }
5312: }
5313:
5314: # ----------------------------------------------------------------- Assign Role
5315:
5316: sub assignrole {
5317: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll)=@_;
5318: my $mrole;
5319: if ($role =~ /^cr\//) {
5320: my $cwosec=$url;
5321: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
5322: unless (&allowed('ccr',$cwosec)) {
5323: &logthis('Refused custom assignrole: '.
5324: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
5325: $env{'user.name'}.' at '.$env{'user.domain'});
5326: return 'refused';
5327: }
5328: $mrole='cr';
5329: } elsif ($role =~ /^gr\//) {
5330: my $cwogrp=$url;
5331: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
5332: unless (&allowed('mdg',$cwogrp)) {
5333: &logthis('Refused group assignrole: '.
5334: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
5335: $env{'user.name'}.' at '.$env{'user.domain'});
5336: return 'refused';
5337: }
5338: $mrole='gr';
5339: } else {
5340: my $cwosec=$url;
5341: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
5342: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
5343: my $refused;
5344: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
5345: if (!(&allowed('c'.$role,$url))) {
5346: $refused = 1;
5347: }
5348: } else {
5349: $refused = 1;
5350: }
5351: if ($refused) {
5352: if (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5353: $refused = '';
5354: } else {
5355: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
5356: ' '.$role.' '.$end.' '.$start.' by '.
5357: $env{'user.name'}.' at '.$env{'user.domain'});
5358: return 'refused';
5359: }
5360: }
5361: }
5362: $mrole=$role;
5363: }
5364: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
5365: "$udom:$uname:$url".'_'."$mrole=$role";
5366: if ($end) { $command.='_'.$end; }
5367: if ($start) {
5368: if ($end) {
5369: $command.='_'.$start;
5370: } else {
5371: $command.='_0_'.$start;
5372: }
5373: }
5374: my $origstart = $start;
5375: my $origend = $end;
5376: # actually delete
5377: if ($deleteflag) {
5378: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
5379: # modify command to delete the role
5380: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
5381: "$udom:$uname:$url".'_'."$mrole";
5382: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
5383: # set start and finish to negative values for userrolelog
5384: $start=-1;
5385: $end=-1;
5386: }
5387: }
5388: # send command
5389: my $answer=&reply($command,&homeserver($uname,$udom));
5390: # log new user role if status is ok
5391: if ($answer eq 'ok') {
5392: &userrolelog($role,$uname,$udom,$url,$start,$end);
5393: # for course roles, perform group memberships changes triggered by role change.
5394: unless ($role =~ /^gr/) {
5395: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
5396: $origstart);
5397: }
5398: }
5399: return $answer;
5400: }
5401:
5402: # -------------------------------------------------- Modify user authentication
5403: # Overrides without validation
5404:
5405: sub modifyuserauth {
5406: my ($udom,$uname,$umode,$upass)=@_;
5407: my $uhome=&homeserver($uname,$udom);
5408: unless (&allowed('mau',$udom)) { return 'refused'; }
5409: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
5410: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
5411: ' in domain '.$env{'request.role.domain'});
5412: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
5413: &escape($upass),$uhome);
5414: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
5415: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
5416: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
5417: &log($udom,,$uname,$uhome,
5418: 'Authentication changed by '.$env{'user.domain'}.', '.
5419: $env{'user.name'}.', '.$umode.
5420: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
5421: unless ($reply eq 'ok') {
5422: &logthis('Authentication mode error: '.$reply);
5423: return 'error: '.$reply;
5424: }
5425: return 'ok';
5426: }
5427:
5428: # --------------------------------------------------------------- Modify a user
5429:
5430: sub modifyuser {
5431: my ($udom, $uname, $uid,
5432: $umode, $upass, $first,
5433: $middle, $last, $gene,
5434: $forceid, $desiredhome, $email)=@_;
5435: $udom= &LONCAPA::clean_domain($udom);
5436: $uname=&LONCAPA::clean_username($uname);
5437: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
5438: $umode.', '.$first.', '.$middle.', '.
5439: $last.', '.$gene.'(forceid: '.$forceid.')'.
5440: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
5441: ' desiredhome not specified').
5442: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
5443: ' in domain '.$env{'request.role.domain'});
5444: my $uhome=&homeserver($uname,$udom,'true');
5445: # ----------------------------------------------------------------- Create User
5446: if (($uhome eq 'no_host') &&
5447: (($umode && $upass) || ($umode eq 'localauth'))) {
5448: my $unhome='';
5449: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
5450: $unhome = $desiredhome;
5451: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
5452: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
5453: } else { # load balancing routine for determining $unhome
5454: my $loadm=10000000;
5455: my %servers = &get_servers($udom,'library');
5456: foreach my $tryserver (keys(%servers)) {
5457: my $answer=reply('load',$tryserver);
5458: if (($answer=~/\d+/) && ($answer<$loadm)) {
5459: $loadm=$answer;
5460: $unhome=$tryserver;
5461: }
5462: }
5463: }
5464: if (($unhome eq '') || ($unhome eq 'no_host')) {
5465: return 'error: unable to find a home server for '.$uname.
5466: ' in domain '.$udom;
5467: }
5468: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
5469: &escape($upass),$unhome);
5470: unless ($reply eq 'ok') {
5471: return 'error: '.$reply;
5472: }
5473: $uhome=&homeserver($uname,$udom,'true');
5474: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
5475: return 'error: unable verify users home machine.';
5476: }
5477: } # End of creation of new user
5478: # ---------------------------------------------------------------------- Add ID
5479: if ($uid) {
5480: $uid=~tr/A-Z/a-z/;
5481: my %uidhash=&idrget($udom,$uname);
5482: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
5483: && (!$forceid)) {
5484: unless ($uid eq $uidhash{$uname}) {
5485: return 'error: user id "'.$uid.'" does not match '.
5486: 'current user id "'.$uidhash{$uname}.'".';
5487: }
5488: } else {
5489: &idput($udom,($uname => $uid));
5490: }
5491: }
5492: # -------------------------------------------------------------- Add names, etc
5493: my @tmp=&get('environment',
5494: ['firstname','middlename','lastname','generation','id',
5495: 'permanentemail'],
5496: $udom,$uname);
5497: my %names;
5498: if ($tmp[0] =~ m/^error:.*/) {
5499: %names=();
5500: } else {
5501: %names = @tmp;
5502: }
5503: #
5504: # Make sure to not trash student environment if instructor does not bother
5505: # to supply name and email information
5506: #
5507: if ($first) { $names{'firstname'} = $first; }
5508: if (defined($middle)) { $names{'middlename'} = $middle; }
5509: if ($last) { $names{'lastname'} = $last; }
5510: if (defined($gene)) { $names{'generation'} = $gene; }
5511: if ($email) {
5512: $email=~s/[^\w\@\.\-\,]//gs;
5513: if ($email=~/\@/) { $names{'notification'} = $email;
5514: $names{'critnotification'} = $email;
5515: $names{'permanentemail'} = $email; }
5516: }
5517: if ($uid) { $names{'id'} = $uid; }
5518: my $reply = &put('environment', \%names, $udom,$uname);
5519: if ($reply ne 'ok') { return 'error: '.$reply; }
5520: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
5521: &devalidate_cache_new('namescache',$uname.':'.$udom);
5522: &logthis('Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
5523: $umode.', '.$first.', '.$middle.', '.
5524: $last.', '.$gene.' by '.
5525: $env{'user.name'}.' at '.$env{'user.domain'});
5526: return 'ok';
5527: }
5528:
5529: # -------------------------------------------------------------- Modify student
5530:
5531: sub modifystudent {
5532: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
5533: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid)=@_;
5534: if (!$cid) {
5535: unless ($cid=$env{'request.course.id'}) {
5536: return 'not_in_class';
5537: }
5538: }
5539: # --------------------------------------------------------------- Make the user
5540: my $reply=&modifyuser
5541: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
5542: $desiredhome,$email);
5543: unless ($reply eq 'ok') { return $reply; }
5544: # This will cause &modify_student_enrollment to get the uid from the
5545: # students environment
5546: $uid = undef if (!$forceid);
5547: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
5548: $gene,$usec,$end,$start,$type,$locktype,$cid);
5549: return $reply;
5550: }
5551:
5552: sub modify_student_enrollment {
5553: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll) = @_;
5554: my ($cdom,$cnum,$chome);
5555: if (!$cid) {
5556: unless ($cid=$env{'request.course.id'}) {
5557: return 'not_in_class';
5558: }
5559: $cdom=$env{'course.'.$cid.'.domain'};
5560: $cnum=$env{'course.'.$cid.'.num'};
5561: } else {
5562: ($cdom,$cnum)=split(/_/,$cid);
5563: }
5564: $chome=$env{'course.'.$cid.'.home'};
5565: if (!$chome) {
5566: $chome=&homeserver($cnum,$cdom);
5567: }
5568: if (!$chome) { return 'unknown_course'; }
5569: # Make sure the user exists
5570: my $uhome=&homeserver($uname,$udom);
5571: if (($uhome eq '') || ($uhome eq 'no_host')) {
5572: return 'error: no such user';
5573: }
5574: # Get student data if we were not given enough information
5575: if (!defined($first) || $first eq '' ||
5576: !defined($last) || $last eq '' ||
5577: !defined($uid) || $uid eq '' ||
5578: !defined($middle) || $middle eq '' ||
5579: !defined($gene) || $gene eq '') {
5580: # They did not supply us with enough data to enroll the student, so
5581: # we need to pick up more information.
5582: my %tmp = &get('environment',
5583: ['firstname','middlename','lastname', 'generation','id']
5584: ,$udom,$uname);
5585:
5586: #foreach my $key (keys(%tmp)) {
5587: # &logthis("key $key = ".$tmp{$key});
5588: #}
5589: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
5590: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
5591: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
5592: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
5593: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
5594: }
5595: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
5596: my $reply=cput('classlist',
5597: {"$uname:$udom" =>
5598: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
5599: $cdom,$cnum);
5600: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
5601: return 'error: '.$reply;
5602: } else {
5603: &devalidate_getsection_cache($udom,$uname,$cid);
5604: }
5605: # Add student role to user
5606: my $uurl='/'.$cid;
5607: $uurl=~s/\_/\//g;
5608: if ($usec) {
5609: $uurl.='/'.$usec;
5610: }
5611: return &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,$selfenroll);
5612: }
5613:
5614: sub format_name {
5615: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
5616: my $name;
5617: if ($first ne 'lastname') {
5618: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
5619: } else {
5620: if ($lastname=~/\S/) {
5621: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
5622: $name=~s/\s+,/,/;
5623: } else {
5624: $name.= $firstname.' '.$middlename.' '.$generation;
5625: }
5626: }
5627: $name=~s/^\s+//;
5628: $name=~s/\s+$//;
5629: $name=~s/\s+/ /g;
5630: return $name;
5631: }
5632:
5633: # ------------------------------------------------- Write to course preferences
5634:
5635: sub writecoursepref {
5636: my ($courseid,%prefs)=@_;
5637: $courseid=~s/^\///;
5638: $courseid=~s/\_/\//g;
5639: my ($cdomain,$cnum)=split(/\//,$courseid);
5640: my $chome=homeserver($cnum,$cdomain);
5641: if (($chome eq '') || ($chome eq 'no_host')) {
5642: return 'error: no such course';
5643: }
5644: my $cstring='';
5645: foreach my $pref (keys(%prefs)) {
5646: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
5647: }
5648: $cstring=~s/\&$//;
5649: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
5650: }
5651:
5652: # ---------------------------------------------------------- Make/modify course
5653:
5654: sub createcourse {
5655: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
5656: $course_owner,$crstype)=@_;
5657: $url=&declutter($url);
5658: my $cid='';
5659: unless (&allowed('ccc',$udom)) {
5660: return 'refused';
5661: }
5662: # ------------------------------------------------------------------- Create ID
5663: my $uname=int(1+rand(9)).
5664: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
5665: substr($$.time,0,5).unpack("H8",pack("I32",time)).
5666: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
5667: # ----------------------------------------------- Make sure that does not exist
5668: my $uhome=&homeserver($uname,$udom,'true');
5669: unless (($uhome eq '') || ($uhome eq 'no_host')) {
5670: $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
5671: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
5672: $uhome=&homeserver($uname,$udom,'true');
5673: unless (($uhome eq '') || ($uhome eq 'no_host')) {
5674: return 'error: unable to generate unique course-ID';
5675: }
5676: }
5677: # ------------------------------------------------ Check supplied server name
5678: $course_server = $env{'user.homeserver'} if (! defined($course_server));
5679: if (! &is_library($course_server)) {
5680: return 'error:bad server name '.$course_server;
5681: }
5682: # ------------------------------------------------------------- Make the course
5683: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
5684: $course_server);
5685: unless ($reply eq 'ok') { return 'error: '.$reply; }
5686: $uhome=&homeserver($uname,$udom,'true');
5687: if (($uhome eq '') || ($uhome eq 'no_host')) {
5688: return 'error: no such course';
5689: }
5690: # ----------------------------------------------------------------- Course made
5691: # log existence
5692: my $newcourse = {
5693: $udom.'_'.$uname => {
5694: description => $description,
5695: inst_code => $inst_code,
5696: owner => $course_owner,
5697: type => $crstype,
5698: },
5699: };
5700: &courseidput($udom,$newcourse,$uhome,'notime');
5701: # set toplevel url
5702: my $topurl=$url;
5703: unless ($nonstandard) {
5704: # ------------------------------------------ For standard courses, make top url
5705: my $mapurl=&clutter($url);
5706: if ($mapurl eq '/res/') { $mapurl=''; }
5707: $env{'form.initmap'}=(<<ENDINITMAP);
5708: <map>
5709: <resource id="1" type="start"></resource>
5710: <resource id="2" src="$mapurl"></resource>
5711: <resource id="3" type="finish"></resource>
5712: <link index="1" from="1" to="2"></link>
5713: <link index="2" from="2" to="3"></link>
5714: </map>
5715: ENDINITMAP
5716: $topurl=&declutter(
5717: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
5718: );
5719: }
5720: # ----------------------------------------------------------- Write preferences
5721: &writecoursepref($udom.'_'.$uname,
5722: ('description' => $description,
5723: 'url' => $topurl));
5724: return '/'.$udom.'/'.$uname;
5725: }
5726:
5727: sub is_course {
5728: my ($cdom,$cnum) = @_;
5729: my %courses = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,
5730: undef,'.');
5731: if (exists($courses{$cdom.'_'.$cnum})) {
5732: return 1;
5733: }
5734: return 0;
5735: }
5736:
5737: # ---------------------------------------------------------- Assign Custom Role
5738:
5739: sub assigncustomrole {
5740: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag)=@_;
5741: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
5742: $end,$start,$deleteflag);
5743: }
5744:
5745: # ----------------------------------------------------------------- Revoke Role
5746:
5747: sub revokerole {
5748: my ($udom,$uname,$url,$role,$deleteflag)=@_;
5749: my $now=time;
5750: return &assignrole($udom,$uname,$url,$role,$now,$deleteflag);
5751: }
5752:
5753: # ---------------------------------------------------------- Revoke Custom Role
5754:
5755: sub revokecustomrole {
5756: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag)=@_;
5757: my $now=time;
5758: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
5759: $deleteflag);
5760: }
5761:
5762: # ------------------------------------------------------------ Disk usage
5763: sub diskusage {
5764: my ($udom,$uname,$directoryRoot)=@_;
5765: $directoryRoot =~ s/\/$//;
5766: my $listing=&reply('du:'.$directoryRoot,homeserver($uname,$udom));
5767: return $listing;
5768: }
5769:
5770: sub is_locked {
5771: my ($file_name, $domain, $user) = @_;
5772: my @check;
5773: my $is_locked;
5774: push @check, $file_name;
5775: my %locked = &get('file_permissions',\@check,
5776: $env{'user.domain'},$env{'user.name'});
5777: my ($tmp)=keys(%locked);
5778: if ($tmp=~/^error:/) { undef(%locked); }
5779:
5780: if (ref($locked{$file_name}) eq 'ARRAY') {
5781: $is_locked = 'false';
5782: foreach my $entry (@{$locked{$file_name}}) {
5783: if (ref($entry) eq 'ARRAY') {
5784: $is_locked = 'true';
5785: last;
5786: }
5787: }
5788: } else {
5789: $is_locked = 'false';
5790: }
5791: }
5792:
5793: sub declutter_portfile {
5794: my ($file) = @_;
5795: $file =~ s{^(/portfolio/|portfolio/)}{/};
5796: return $file;
5797: }
5798:
5799: # ------------------------------------------------------------- Mark as Read Only
5800:
5801: sub mark_as_readonly {
5802: my ($domain,$user,$files,$what) = @_;
5803: my %current_permissions = &dump('file_permissions',$domain,$user);
5804: my ($tmp)=keys(%current_permissions);
5805: if ($tmp=~/^error:/) { undef(%current_permissions); }
5806: foreach my $file (@{$files}) {
5807: $file = &declutter_portfile($file);
5808: push(@{$current_permissions{$file}},$what);
5809: }
5810: &put('file_permissions',\%current_permissions,$domain,$user);
5811: return;
5812: }
5813:
5814: # ------------------------------------------------------------Save Selected Files
5815:
5816: sub save_selected_files {
5817: my ($user, $path, @files) = @_;
5818: my $filename = $user."savedfiles";
5819: my @other_files = &files_not_in_path($user, $path);
5820: open (OUT, '>'.$tmpdir.$filename);
5821: foreach my $file (@files) {
5822: print (OUT $env{'form.currentpath'}.$file."\n");
5823: }
5824: foreach my $file (@other_files) {
5825: print (OUT $file."\n");
5826: }
5827: close (OUT);
5828: return 'ok';
5829: }
5830:
5831: sub clear_selected_files {
5832: my ($user) = @_;
5833: my $filename = $user."savedfiles";
5834: open (OUT, '>'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
5835: print (OUT undef);
5836: close (OUT);
5837: return ("ok");
5838: }
5839:
5840: sub files_in_path {
5841: my ($user, $path) = @_;
5842: my $filename = $user."savedfiles";
5843: my %return_files;
5844: open (IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
5845: while (my $line_in = <IN>) {
5846: chomp ($line_in);
5847: my @paths_and_file = split (m!/!, $line_in);
5848: my $file_part = pop (@paths_and_file);
5849: my $path_part = join ('/', @paths_and_file);
5850: $path_part.='/';
5851: my $path_and_file = $path_part.$file_part;
5852: if ($path_part eq $path) {
5853: $return_files{$file_part}= 'selected';
5854: }
5855: }
5856: close (IN);
5857: return (\%return_files);
5858: }
5859:
5860: # called in portfolio select mode, to show files selected NOT in current directory
5861: sub files_not_in_path {
5862: my ($user, $path) = @_;
5863: my $filename = $user."savedfiles";
5864: my @return_files;
5865: my $path_part;
5866: open(IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
5867: while (my $line = <IN>) {
5868: #ok, I know it's clunky, but I want it to work
5869: my @paths_and_file = split(m|/|, $line);
5870: my $file_part = pop(@paths_and_file);
5871: chomp($file_part);
5872: my $path_part = join('/', @paths_and_file);
5873: $path_part .= '/';
5874: my $path_and_file = $path_part.$file_part;
5875: if ($path_part ne $path) {
5876: push(@return_files, ($path_and_file));
5877: }
5878: }
5879: close(OUT);
5880: return (@return_files);
5881: }
5882:
5883: #----------------------------------------------Get portfolio file permissions
5884:
5885: sub get_portfile_permissions {
5886: my ($domain,$user) = @_;
5887: my %current_permissions = &dump('file_permissions',$domain,$user);
5888: my ($tmp)=keys(%current_permissions);
5889: if ($tmp=~/^error:/) { undef(%current_permissions); }
5890: return \%current_permissions;
5891: }
5892:
5893: #---------------------------------------------Get portfolio file access controls
5894:
5895: sub get_access_controls {
5896: my ($current_permissions,$group,$file) = @_;
5897: my %access;
5898: my $real_file = $file;
5899: $file =~ s/\.meta$//;
5900: if (defined($file)) {
5901: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
5902: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
5903: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
5904: }
5905: }
5906: } else {
5907: foreach my $key (keys(%{$current_permissions})) {
5908: if ($key =~ /\0accesscontrol$/) {
5909: if (defined($group)) {
5910: if ($key !~ m-^\Q$group\E/-) {
5911: next;
5912: }
5913: }
5914: my ($fullpath) = split(/\0/,$key);
5915: if (ref($$current_permissions{$key}) eq 'HASH') {
5916: foreach my $control (keys(%{$$current_permissions{$key}})) {
5917: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
5918: }
5919: }
5920: }
5921: }
5922: }
5923: return %access;
5924: }
5925:
5926: sub modify_access_controls {
5927: my ($file_name,$changes,$domain,$user)=@_;
5928: my ($outcome,$deloutcome);
5929: my %store_permissions;
5930: my %new_values;
5931: my %new_control;
5932: my %translation;
5933: my @deletions = ();
5934: my $now = time;
5935: if (exists($$changes{'activate'})) {
5936: if (ref($$changes{'activate'}) eq 'HASH') {
5937: my @newitems = sort(keys(%{$$changes{'activate'}}));
5938: my $numnew = scalar(@newitems);
5939: for (my $i=0; $i<$numnew; $i++) {
5940: my $newkey = $newitems[$i];
5941: my $newid = &Apache::loncommon::get_cgi_id();
5942: if ($newkey =~ /^\d+:/) {
5943: $newkey =~ s/^(\d+)/$newid/;
5944: $translation{$1} = $newid;
5945: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
5946: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
5947: $translation{$1} = $newid;
5948: }
5949: $new_values{$file_name."\0".$newkey} =
5950: $$changes{'activate'}{$newitems[$i]};
5951: $new_control{$newkey} = $now;
5952: }
5953: }
5954: }
5955: my %todelete;
5956: my %changed_items;
5957: foreach my $action ('delete','update') {
5958: if (exists($$changes{$action})) {
5959: if (ref($$changes{$action}) eq 'HASH') {
5960: foreach my $key (keys(%{$$changes{$action}})) {
5961: my ($itemnum) = ($key =~ /^([^:]+):/);
5962: if ($action eq 'delete') {
5963: $todelete{$itemnum} = 1;
5964: } else {
5965: $changed_items{$itemnum} = $key;
5966: }
5967: }
5968: }
5969: }
5970: }
5971: # get lock on access controls for file.
5972: my $lockhash = {
5973: $file_name."\0".'locked_access_records' => $env{'user.name'}.
5974: ':'.$env{'user.domain'},
5975: };
5976: my $tries = 0;
5977: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
5978:
5979: while (($gotlock ne 'ok') && $tries <3) {
5980: $tries ++;
5981: sleep 1;
5982: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
5983: }
5984: if ($gotlock eq 'ok') {
5985: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
5986: my ($tmp)=keys(%curr_permissions);
5987: if ($tmp=~/^error:/) { undef(%curr_permissions); }
5988: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
5989: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
5990: if (ref($curr_controls) eq 'HASH') {
5991: foreach my $control_item (keys(%{$curr_controls})) {
5992: my ($itemnum) = ($control_item =~ /^([^:]+):/);
5993: if (defined($todelete{$itemnum})) {
5994: push(@deletions,$file_name."\0".$control_item);
5995: } else {
5996: if (defined($changed_items{$itemnum})) {
5997: $new_control{$changed_items{$itemnum}} = $now;
5998: push(@deletions,$file_name."\0".$control_item);
5999: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
6000: } else {
6001: $new_control{$control_item} = $$curr_controls{$control_item};
6002: }
6003: }
6004: }
6005: }
6006: }
6007: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
6008: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
6009: $outcome = &put('file_permissions',\%new_values,$domain,$user);
6010: # remove lock
6011: my @del_lock = ($file_name."\0".'locked_access_records');
6012: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
6013: my ($file,$group);
6014: if (&is_course($domain,$user)) {
6015: ($group,$file) = split(/\//,$file_name,2);
6016: } else {
6017: $file = $file_name;
6018: }
6019: my $sqlresult =
6020: &update_portfolio_table($user,$domain,$file,'portfolio_access',
6021: $group);
6022: } else {
6023: $outcome = "error: could not obtain lockfile\n";
6024: }
6025: return ($outcome,$deloutcome,\%new_values,\%translation);
6026: }
6027:
6028: sub make_public_indefinitely {
6029: my ($requrl) = @_;
6030: my $now = time;
6031: my $action = 'activate';
6032: my $aclnum = 0;
6033: if (&is_portfolio_url($requrl)) {
6034: my (undef,$udom,$unum,$file_name,$group) =
6035: &parse_portfolio_url($requrl);
6036: my $current_perms = &get_portfile_permissions($udom,$unum);
6037: my %access_controls = &get_access_controls($current_perms,
6038: $group,$file_name);
6039: foreach my $key (keys(%{$access_controls{$file_name}})) {
6040: my ($num,$scope,$end,$start) =
6041: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
6042: if ($scope eq 'public') {
6043: if ($start <= $now && $end == 0) {
6044: $action = 'none';
6045: } else {
6046: $action = 'update';
6047: $aclnum = $num;
6048: }
6049: last;
6050: }
6051: }
6052: if ($action eq 'none') {
6053: return 'ok';
6054: } else {
6055: my %changes;
6056: my $newend = 0;
6057: my $newstart = $now;
6058: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
6059: $changes{$action}{$newkey} = {
6060: type => 'public',
6061: time => {
6062: start => $newstart,
6063: end => $newend,
6064: },
6065: };
6066: my ($outcome,$deloutcome,$new_values,$translation) =
6067: &modify_access_controls($file_name,\%changes,$udom,$unum);
6068: return $outcome;
6069: }
6070: } else {
6071: return 'invalid';
6072: }
6073: }
6074:
6075: #------------------------------------------------------Get Marked as Read Only
6076:
6077: sub get_marked_as_readonly {
6078: my ($domain,$user,$what,$group) = @_;
6079: my $current_permissions = &get_portfile_permissions($domain,$user);
6080: my @readonly_files;
6081: my $cmp1=$what;
6082: if (ref($what)) { $cmp1=join('',@{$what}) };
6083: while (my ($file_name,$value) = each(%{$current_permissions})) {
6084: if (defined($group)) {
6085: if ($file_name !~ m-^\Q$group\E/-) {
6086: next;
6087: }
6088: }
6089: if (ref($value) eq "ARRAY"){
6090: foreach my $stored_what (@{$value}) {
6091: my $cmp2=$stored_what;
6092: if (ref($stored_what) eq 'ARRAY') {
6093: $cmp2=join('',@{$stored_what});
6094: }
6095: if ($cmp1 eq $cmp2) {
6096: push(@readonly_files, $file_name);
6097: last;
6098: } elsif (!defined($what)) {
6099: push(@readonly_files, $file_name);
6100: last;
6101: }
6102: }
6103: }
6104: }
6105: return @readonly_files;
6106: }
6107: #-----------------------------------------------------------Get Marked as Read Only Hash
6108:
6109: sub get_marked_as_readonly_hash {
6110: my ($current_permissions,$group,$what) = @_;
6111: my %readonly_files;
6112: while (my ($file_name,$value) = each(%{$current_permissions})) {
6113: if (defined($group)) {
6114: if ($file_name !~ m-^\Q$group\E/-) {
6115: next;
6116: }
6117: }
6118: if (ref($value) eq "ARRAY"){
6119: foreach my $stored_what (@{$value}) {
6120: if (ref($stored_what) eq 'ARRAY') {
6121: foreach my $lock_descriptor(@{$stored_what}) {
6122: if ($lock_descriptor eq 'graded') {
6123: $readonly_files{$file_name} = 'graded';
6124: } elsif ($lock_descriptor eq 'handback') {
6125: $readonly_files{$file_name} = 'handback';
6126: } else {
6127: if (!exists($readonly_files{$file_name})) {
6128: $readonly_files{$file_name} = 'locked';
6129: }
6130: }
6131: }
6132: }
6133: }
6134: }
6135: }
6136: return %readonly_files;
6137: }
6138: # ------------------------------------------------------------ Unmark as Read Only
6139:
6140: sub unmark_as_readonly {
6141: # unmarks $file_name (if $file_name is defined), or all files locked by $what
6142: # for portfolio submissions, $what contains [$symb,$crsid]
6143: my ($domain,$user,$what,$file_name,$group) = @_;
6144: $file_name = &declutter_portfile($file_name);
6145: my $symb_crs = $what;
6146: if (ref($what)) { $symb_crs=join('',@$what); }
6147: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
6148: my ($tmp)=keys(%current_permissions);
6149: if ($tmp=~/^error:/) { undef(%current_permissions); }
6150: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
6151: foreach my $file (@readonly_files) {
6152: my $clean_file = &declutter_portfile($file);
6153: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
6154: my $current_locks = $current_permissions{$file};
6155: my @new_locks;
6156: my @del_keys;
6157: if (ref($current_locks) eq "ARRAY"){
6158: foreach my $locker (@{$current_locks}) {
6159: my $compare=$locker;
6160: if (ref($locker) eq 'ARRAY') {
6161: $compare=join('',@{$locker});
6162: if ($compare ne $symb_crs) {
6163: push(@new_locks, $locker);
6164: }
6165: }
6166: }
6167: if (scalar(@new_locks) > 0) {
6168: $current_permissions{$file} = \@new_locks;
6169: } else {
6170: push(@del_keys, $file);
6171: &del('file_permissions',\@del_keys, $domain, $user);
6172: delete($current_permissions{$file});
6173: }
6174: }
6175: }
6176: &put('file_permissions',\%current_permissions,$domain,$user);
6177: return;
6178: }
6179:
6180: # ------------------------------------------------------------ Directory lister
6181:
6182: sub dirlist {
6183: my ($uri,$userdomain,$username,$alternateDirectoryRoot)=@_;
6184:
6185: $uri=~s/^\///;
6186: $uri=~s/\/$//;
6187: my ($udom, $uname);
6188: (undef,$udom,$uname)=split(/\//,$uri);
6189: if(defined($userdomain)) {
6190: $udom = $userdomain;
6191: }
6192: if(defined($username)) {
6193: $uname = $username;
6194: }
6195:
6196: my $dirRoot = $perlvar{'lonDocRoot'};
6197: if(defined($alternateDirectoryRoot)) {
6198: $dirRoot = $alternateDirectoryRoot;
6199: $dirRoot =~ s/\/$//;
6200: }
6201:
6202: if($udom) {
6203: if($uname) {
6204: my $listing = &reply('ls2:'.$dirRoot.'/'.$uri,
6205: &homeserver($uname,$udom));
6206: my @listing_results;
6207: if ($listing eq 'unknown_cmd') {
6208: $listing = &reply('ls:'.$dirRoot.'/'.$uri,
6209: &homeserver($uname,$udom));
6210: @listing_results = split(/:/,$listing);
6211: } else {
6212: @listing_results = map { &unescape($_); } split(/:/,$listing);
6213: }
6214: return @listing_results;
6215: } elsif(!defined($alternateDirectoryRoot)) {
6216: my %allusers;
6217: my %servers = &get_servers($udom,'library');
6218: foreach my $tryserver (keys(%servers)) {
6219: my $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
6220: $udom, $tryserver);
6221: my @listing_results;
6222: if ($listing eq 'unknown_cmd') {
6223: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
6224: $udom, $tryserver);
6225: @listing_results = split(/:/,$listing);
6226: } else {
6227: @listing_results =
6228: map { &unescape($_); } split(/:/,$listing);
6229: }
6230: if ($listing_results[0] ne 'no_such_dir' &&
6231: $listing_results[0] ne 'empty' &&
6232: $listing_results[0] ne 'con_lost') {
6233: foreach my $line (@listing_results) {
6234: my ($entry) = split(/&/,$line,2);
6235: $allusers{$entry} = 1;
6236: }
6237: }
6238: }
6239: my $alluserstr='';
6240: foreach my $user (sort(keys(%allusers))) {
6241: $alluserstr.=$user.'&user:';
6242: }
6243: $alluserstr=~s/:$//;
6244: return split(/:/,$alluserstr);
6245: } else {
6246: return ('missing user name');
6247: }
6248: } elsif(!defined($alternateDirectoryRoot)) {
6249: my @all_domains = sort(&all_domains());
6250: foreach my $domain (@all_domains) {
6251: $domain = $perlvar{'lonDocRoot'}.'/res/'.$domain.'/&domain';
6252: }
6253: return @all_domains;
6254: } else {
6255: return ('missing domain');
6256: }
6257: }
6258:
6259: # --------------------------------------------- GetFileTimestamp
6260: # This function utilizes dirlist and returns the date stamp for
6261: # when it was last modified. It will also return an error of -1
6262: # if an error occurs
6263:
6264: ##
6265: ## FIXME: This subroutine assumes its caller knows something about the
6266: ## directory structure of the home server for the student ($root).
6267: ## Not a good assumption to make. Since this is for looking up files
6268: ## in user directories, the full path should be constructed by lond, not
6269: ## whatever machine we request data from.
6270: ##
6271: sub GetFileTimestamp {
6272: my ($studentDomain,$studentName,$filename,$root)=@_;
6273: $studentDomain = &LONCAPA::clean_domain($studentDomain);
6274: $studentName = &LONCAPA::clean_username($studentName);
6275: my $subdir=$studentName.'__';
6276: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
6277: my $proname="$studentDomain/$subdir/$studentName";
6278: $proname .= '/'.$filename;
6279: my ($fileStat) = &Apache::lonnet::dirlist($proname, $studentDomain,
6280: $studentName, $root);
6281: my @stats = split('&', $fileStat);
6282: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
6283: # @stats contains first the filename, then the stat output
6284: return $stats[10]; # so this is 10 instead of 9.
6285: } else {
6286: return -1;
6287: }
6288: }
6289:
6290: sub stat_file {
6291: my ($uri) = @_;
6292: $uri = &clutter_with_no_wrapper($uri);
6293:
6294: my ($udom,$uname,$file,$dir);
6295: if ($uri =~ m-^/(uploaded|editupload)/-) {
6296: ($udom,$uname,$file) =
6297: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
6298: $file = 'userfiles/'.$file;
6299: $dir = &propath($udom,$uname);
6300: }
6301: if ($uri =~ m-^/res/-) {
6302: ($udom,$uname) =
6303: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
6304: $file = $uri;
6305: }
6306:
6307: if (!$udom || !$uname || !$file) {
6308: # unable to handle the uri
6309: return ();
6310: }
6311:
6312: my ($result) = &dirlist($file,$udom,$uname,$dir);
6313: my @stats = split('&', $result);
6314:
6315: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
6316: shift(@stats); #filename is first
6317: return @stats;
6318: }
6319: return ();
6320: }
6321:
6322: # -------------------------------------------------------- Value of a Condition
6323:
6324: # gets the value of a specific preevaluated condition
6325: # stored in the string $env{user.state.<cid>}
6326: # or looks up a condition reference in the bighash and if if hasn't
6327: # already been evaluated recurses into docondval to get the value of
6328: # the condition, then memoizing it to
6329: # $env{user.state.<cid>.<condition>}
6330: sub directcondval {
6331: my $number=shift;
6332: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
6333: &Apache::lonuserstate::evalstate();
6334: }
6335: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
6336: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
6337: } elsif ($number =~ /^_/) {
6338: my $sub_condition;
6339: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
6340: &GDBM_READER(),0640)) {
6341: $sub_condition=$bighash{'conditions'.$number};
6342: untie(%bighash);
6343: }
6344: my $value = &docondval($sub_condition);
6345: &appenv('user.state.'.$env{'request.course.id'}.".$number" => $value);
6346: return $value;
6347: }
6348: if ($env{'user.state.'.$env{'request.course.id'}}) {
6349: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
6350: } else {
6351: return 2;
6352: }
6353: }
6354:
6355: # get the collection of conditions for this resource
6356: sub condval {
6357: my $condidx=shift;
6358: my $allpathcond='';
6359: foreach my $cond (split(/\|/,$condidx)) {
6360: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
6361: $allpathcond.=
6362: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
6363: }
6364: }
6365: $allpathcond=~s/\|$//;
6366: return &docondval($allpathcond);
6367: }
6368:
6369: #evaluates an expression of conditions
6370: sub docondval {
6371: my ($allpathcond) = @_;
6372: my $result=0;
6373: if ($env{'request.course.id'}
6374: && defined($allpathcond)) {
6375: my $operand='|';
6376: my @stack;
6377: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
6378: if ($chunk eq '(') {
6379: push @stack,($operand,$result);
6380: } elsif ($chunk eq ')') {
6381: my $before=pop @stack;
6382: if (pop @stack eq '&') {
6383: $result=$result>$before?$before:$result;
6384: } else {
6385: $result=$result>$before?$result:$before;
6386: }
6387: } elsif (($chunk eq '&') || ($chunk eq '|')) {
6388: $operand=$chunk;
6389: } else {
6390: my $new=directcondval($chunk);
6391: if ($operand eq '&') {
6392: $result=$result>$new?$new:$result;
6393: } else {
6394: $result=$result>$new?$result:$new;
6395: }
6396: }
6397: }
6398: }
6399: return $result;
6400: }
6401:
6402: # ---------------------------------------------------- Devalidate courseresdata
6403:
6404: sub devalidatecourseresdata {
6405: my ($coursenum,$coursedomain)=@_;
6406: my $hashid=$coursenum.':'.$coursedomain;
6407: &devalidate_cache_new('courseres',$hashid);
6408: }
6409:
6410:
6411: # --------------------------------------------------- Course Resourcedata Query
6412: #
6413: # Parameters:
6414: # $coursenum - Number of the course.
6415: # $coursedomain - Domain at which the course was created.
6416: # Returns:
6417: # A hash of the course parameters along (I think) with timestamps
6418: # and version info.
6419:
6420: sub get_courseresdata {
6421: my ($coursenum,$coursedomain)=@_;
6422: my $coursehom=&homeserver($coursenum,$coursedomain);
6423: my $hashid=$coursenum.':'.$coursedomain;
6424: my ($result,$cached)=&is_cached_new('courseres',$hashid);
6425: my %dumpreply;
6426: unless (defined($cached)) {
6427: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
6428: $result=\%dumpreply;
6429: my ($tmp) = keys(%dumpreply);
6430: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
6431: &do_cache_new('courseres',$hashid,$result,600);
6432: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
6433: return $tmp;
6434: } elsif ($tmp =~ /^(error)/) {
6435: $result=undef;
6436: &do_cache_new('courseres',$hashid,$result,600);
6437: }
6438: }
6439: return $result;
6440: }
6441:
6442: sub devalidateuserresdata {
6443: my ($uname,$udom)=@_;
6444: my $hashid="$udom:$uname";
6445: &devalidate_cache_new('userres',$hashid);
6446: }
6447:
6448: sub get_userresdata {
6449: my ($uname,$udom)=@_;
6450: #most student don\'t have any data set, check if there is some data
6451: if (&EXT_cache_status($udom,$uname)) { return undef; }
6452:
6453: my $hashid="$udom:$uname";
6454: my ($result,$cached)=&is_cached_new('userres',$hashid);
6455: if (!defined($cached)) {
6456: my %resourcedata=&dump('resourcedata',$udom,$uname);
6457: $result=\%resourcedata;
6458: &do_cache_new('userres',$hashid,$result,600);
6459: }
6460: my ($tmp)=keys(%$result);
6461: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
6462: return $result;
6463: }
6464: #error 2 occurs when the .db doesn't exist
6465: if ($tmp!~/error: 2 /) {
6466: &logthis("<font color=\"blue\">WARNING:".
6467: " Trying to get resource data for ".
6468: $uname." at ".$udom.": ".
6469: $tmp."</font>");
6470: } elsif ($tmp=~/error: 2 /) {
6471: #&EXT_cache_set($udom,$uname);
6472: &do_cache_new('userres',$hashid,undef,600);
6473: undef($tmp); # not really an error so don't send it back
6474: }
6475: return $tmp;
6476: }
6477: #----------------------------------------------- resdata - return resource data
6478: # Purpose:
6479: # Return resource data for either users or for a course.
6480: # Parameters:
6481: # $name - Course/user name.
6482: # $domain - Name of the domain the user/course is registered on.
6483: # $type - Type of thing $name is (must be 'course' or 'user'
6484: # @which - Array of names of resources desired.
6485: # Returns:
6486: # The value of the first reasource in @which that is found in the
6487: # resource hash.
6488: # Exceptional Conditions:
6489: # If the $type passed in is not valid (not the string 'course' or
6490: # 'user', an undefined reference is returned.
6491: # If none of the resources are found, an undef is returned
6492: sub resdata {
6493: my ($name,$domain,$type,@which)=@_;
6494: my $result;
6495: if ($type eq 'course') {
6496: $result=&get_courseresdata($name,$domain);
6497: } elsif ($type eq 'user') {
6498: $result=&get_userresdata($name,$domain);
6499: }
6500: if (!ref($result)) { return $result; }
6501: foreach my $item (@which) {
6502: if (defined($result->{$item->[0]})) {
6503: return [$result->{$item->[0]},$item->[1]];
6504: }
6505: }
6506: return undef;
6507: }
6508:
6509: #
6510: # EXT resource caching routines
6511: #
6512:
6513: sub clear_EXT_cache_status {
6514: &delenv('cache.EXT.');
6515: }
6516:
6517: sub EXT_cache_status {
6518: my ($target_domain,$target_user) = @_;
6519: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
6520: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
6521: # We know already the user has no data
6522: return 1;
6523: } else {
6524: return 0;
6525: }
6526: }
6527:
6528: sub EXT_cache_set {
6529: my ($target_domain,$target_user) = @_;
6530: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
6531: #&appenv($cachename => time);
6532: }
6533:
6534: # --------------------------------------------------------- Value of a Variable
6535: sub EXT {
6536:
6537: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
6538: unless ($varname) { return ''; }
6539: #get real user name/domain, courseid and symb
6540: my $courseid;
6541: my $publicuser;
6542: if ($symbparm) {
6543: $symbparm=&get_symb_from_alias($symbparm);
6544: }
6545: if (!($uname && $udom)) {
6546: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
6547: if (!$symbparm) { $symbparm=$cursymb; }
6548: } else {
6549: $courseid=$env{'request.course.id'};
6550: }
6551: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
6552: my $rest;
6553: if (defined($therest[0])) {
6554: $rest=join('.',@therest);
6555: } else {
6556: $rest='';
6557: }
6558:
6559: my $qualifierrest=$qualifier;
6560: if ($rest) { $qualifierrest.='.'.$rest; }
6561: my $spacequalifierrest=$space;
6562: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
6563: if ($realm eq 'user') {
6564: # --------------------------------------------------------------- user.resource
6565: if ($space eq 'resource') {
6566: if ( (defined($Apache::lonhomework::parsing_a_problem)
6567: || defined($Apache::lonhomework::parsing_a_task))
6568: &&
6569: ($symbparm eq &symbread()) ) {
6570: # if we are in the middle of processing the resource the
6571: # get the value we are planning on committing
6572: if (defined($Apache::lonhomework::results{$qualifierrest})) {
6573: return $Apache::lonhomework::results{$qualifierrest};
6574: } else {
6575: return $Apache::lonhomework::history{$qualifierrest};
6576: }
6577: } else {
6578: my %restored;
6579: if ($publicuser || $env{'request.state'} eq 'construct') {
6580: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
6581: } else {
6582: %restored=&restore($symbparm,$courseid,$udom,$uname);
6583: }
6584: return $restored{$qualifierrest};
6585: }
6586: # ----------------------------------------------------------------- user.access
6587: } elsif ($space eq 'access') {
6588: # FIXME - not supporting calls for a specific user
6589: return &allowed($qualifier,$rest);
6590: # ------------------------------------------ user.preferences, user.environment
6591: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
6592: if (($uname eq $env{'user.name'}) &&
6593: ($udom eq $env{'user.domain'})) {
6594: return $env{join('.',('environment',$qualifierrest))};
6595: } else {
6596: my %returnhash;
6597: if (!$publicuser) {
6598: %returnhash=&userenvironment($udom,$uname,
6599: $qualifierrest);
6600: }
6601: return $returnhash{$qualifierrest};
6602: }
6603: # ----------------------------------------------------------------- user.course
6604: } elsif ($space eq 'course') {
6605: # FIXME - not supporting calls for a specific user
6606: return $env{join('.',('request.course',$qualifier))};
6607: # ------------------------------------------------------------------- user.role
6608: } elsif ($space eq 'role') {
6609: # FIXME - not supporting calls for a specific user
6610: my ($role,$where)=split(/\./,$env{'request.role'});
6611: if ($qualifier eq 'value') {
6612: return $role;
6613: } elsif ($qualifier eq 'extent') {
6614: return $where;
6615: }
6616: # ----------------------------------------------------------------- user.domain
6617: } elsif ($space eq 'domain') {
6618: return $udom;
6619: # ------------------------------------------------------------------- user.name
6620: } elsif ($space eq 'name') {
6621: return $uname;
6622: # ---------------------------------------------------- Any other user namespace
6623: } else {
6624: my %reply;
6625: if (!$publicuser) {
6626: %reply=&get($space,[$qualifierrest],$udom,$uname);
6627: }
6628: return $reply{$qualifierrest};
6629: }
6630: } elsif ($realm eq 'query') {
6631: # ---------------------------------------------- pull stuff out of query string
6632: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
6633: [$spacequalifierrest]);
6634: return $env{'form.'.$spacequalifierrest};
6635: } elsif ($realm eq 'request') {
6636: # ------------------------------------------------------------- request.browser
6637: if ($space eq 'browser') {
6638: if ($qualifier eq 'textremote') {
6639: if (&Apache::lonlocal::mt('textual_remote_display') eq 'on') {
6640: return 1;
6641: } else {
6642: return 0;
6643: }
6644: } else {
6645: return $env{'browser.'.$qualifier};
6646: }
6647: # ------------------------------------------------------------ request.filename
6648: } else {
6649: return $env{'request.'.$spacequalifierrest};
6650: }
6651: } elsif ($realm eq 'course') {
6652: # ---------------------------------------------------------- course.description
6653: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
6654: } elsif ($realm eq 'resource') {
6655:
6656: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
6657: if (!$symbparm) { $symbparm=&symbread(); }
6658: }
6659:
6660: if ($space eq 'title') {
6661: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
6662: return &gettitle($symbparm);
6663: }
6664:
6665: if ($space eq 'map') {
6666: my ($map) = &decode_symb($symbparm);
6667: return &symbread($map);
6668: }
6669: if ($space eq 'filename') {
6670: if ($symbparm) {
6671: return &clutter((&decode_symb($symbparm))[2]);
6672: }
6673: return &hreflocation('',$env{'request.filename'});
6674: }
6675:
6676: my ($section, $group, @groups);
6677: my ($courselevelm,$courselevel);
6678: if ($symbparm && defined($courseid) &&
6679: $courseid eq $env{'request.course.id'}) {
6680:
6681: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
6682:
6683: # ----------------------------------------------------- Cascading lookup scheme
6684: my $symbp=$symbparm;
6685: my $mapp=&deversion((&decode_symb($symbp))[0]);
6686:
6687: my $symbparm=$symbp.'.'.$spacequalifierrest;
6688: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
6689:
6690: if (($env{'user.name'} eq $uname) &&
6691: ($env{'user.domain'} eq $udom)) {
6692: $section=$env{'request.course.sec'};
6693: @groups = split(/:/,$env{'request.course.groups'});
6694: @groups=&sort_course_groups($courseid,@groups);
6695: } else {
6696: if (! defined($usection)) {
6697: $section=&getsection($udom,$uname,$courseid);
6698: } else {
6699: $section = $usection;
6700: }
6701: @groups = &get_users_groups($udom,$uname,$courseid);
6702: }
6703:
6704: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
6705: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
6706: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
6707:
6708: $courselevel=$courseid.'.'.$spacequalifierrest;
6709: my $courselevelr=$courseid.'.'.$symbparm;
6710: $courselevelm=$courseid.'.'.$mapparm;
6711:
6712: # ----------------------------------------------------------- first, check user
6713:
6714: my $userreply=&resdata($uname,$udom,'user',
6715: ([$courselevelr,'resource'],
6716: [$courselevelm,'map' ],
6717: [$courselevel, 'course' ]));
6718: if (defined($userreply)) { return &get_reply($userreply); }
6719:
6720: # ------------------------------------------------ second, check some of course
6721: my $coursereply;
6722: if (@groups > 0) {
6723: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
6724: $mapparm,$spacequalifierrest);
6725: if (defined($coursereply)) { return &get_reply($coursereply); }
6726: }
6727:
6728: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
6729: $env{'course.'.$courseid.'.domain'},
6730: 'course',
6731: ([$seclevelr, 'resource'],
6732: [$seclevelm, 'map' ],
6733: [$seclevel, 'course' ],
6734: [$courselevelr,'resource']));
6735: if (defined($coursereply)) { return &get_reply($coursereply); }
6736:
6737: # ------------------------------------------------------ third, check map parms
6738: my %parmhash=();
6739: my $thisparm='';
6740: if (tie(%parmhash,'GDBM_File',
6741: $env{'request.course.fn'}.'_parms.db',
6742: &GDBM_READER(),0640)) {
6743: $thisparm=$parmhash{$symbparm};
6744: untie(%parmhash);
6745: }
6746: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
6747: }
6748: # ------------------------------------------ fourth, look in resource metadata
6749:
6750: $spacequalifierrest=~s/\./\_/;
6751: my $filename;
6752: if (!$symbparm) { $symbparm=&symbread(); }
6753: if ($symbparm) {
6754: $filename=(&decode_symb($symbparm))[2];
6755: } else {
6756: $filename=$env{'request.filename'};
6757: }
6758: my $metadata=&metadata($filename,$spacequalifierrest);
6759: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
6760: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
6761: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
6762:
6763: # ---------------------------------------------- fourth, look in rest of course
6764: if ($symbparm && defined($courseid) &&
6765: $courseid eq $env{'request.course.id'}) {
6766: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
6767: $env{'course.'.$courseid.'.domain'},
6768: 'course',
6769: ([$courselevelm,'map' ],
6770: [$courselevel, 'course']));
6771: if (defined($coursereply)) { return &get_reply($coursereply); }
6772: }
6773: # ------------------------------------------------------------------ Cascade up
6774: unless ($space eq '0') {
6775: my @parts=split(/_/,$space);
6776: my $id=pop(@parts);
6777: my $part=join('_',@parts);
6778: if ($part eq '') { $part='0'; }
6779: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
6780: $symbparm,$udom,$uname,$section,1);
6781: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
6782: }
6783: if ($recurse) { return undef; }
6784: my $pack_def=&packages_tab_default($filename,$varname);
6785: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
6786: # ---------------------------------------------------- Any other user namespace
6787: } elsif ($realm eq 'environment') {
6788: # ----------------------------------------------------------------- environment
6789: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
6790: return $env{'environment.'.$spacequalifierrest};
6791: } else {
6792: if ($uname eq 'anonymous' && $udom eq '') {
6793: return '';
6794: }
6795: my %returnhash=&userenvironment($udom,$uname,
6796: $spacequalifierrest);
6797: return $returnhash{$spacequalifierrest};
6798: }
6799: } elsif ($realm eq 'system') {
6800: # ----------------------------------------------------------------- system.time
6801: if ($space eq 'time') {
6802: return time;
6803: }
6804: } elsif ($realm eq 'server') {
6805: # ----------------------------------------------------------------- system.time
6806: if ($space eq 'name') {
6807: return $ENV{'SERVER_NAME'};
6808: }
6809: }
6810: return '';
6811: }
6812:
6813: sub get_reply {
6814: my ($reply_value) = @_;
6815: if (ref($reply_value) eq 'ARRAY') {
6816: if (wantarray) {
6817: return @$reply_value;
6818: }
6819: return $reply_value->[0];
6820: } else {
6821: return $reply_value;
6822: }
6823: }
6824:
6825: sub check_group_parms {
6826: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
6827: my @groupitems = ();
6828: my $resultitem;
6829: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
6830: foreach my $group (@{$groups}) {
6831: foreach my $level (@levels) {
6832: my $item = $courseid.'.['.$group.'].'.$level->[0];
6833: push(@groupitems,[$item,$level->[1]]);
6834: }
6835: }
6836: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
6837: $env{'course.'.$courseid.'.domain'},
6838: 'course',@groupitems);
6839: return $coursereply;
6840: }
6841:
6842: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
6843: my ($courseid,@groups) = @_;
6844: @groups = sort(@groups);
6845: return @groups;
6846: }
6847:
6848: sub packages_tab_default {
6849: my ($uri,$varname)=@_;
6850: my (undef,$part,$name)=split(/\./,$varname);
6851:
6852: my (@extension,@specifics,$do_default);
6853: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
6854: my ($pack_type,$pack_part)=split(/_/,$package,2);
6855: if ($pack_type eq 'default') {
6856: $do_default=1;
6857: } elsif ($pack_type eq 'extension') {
6858: push(@extension,[$package,$pack_type,$pack_part]);
6859: } elsif ($pack_part eq $part || $pack_type eq 'part') {
6860: # only look at packages defaults for packages that this id is
6861: push(@specifics,[$package,$pack_type,$pack_part]);
6862: }
6863: }
6864: # first look for a package that matches the requested part id
6865: foreach my $package (@specifics) {
6866: my (undef,$pack_type,$pack_part)=@{$package};
6867: next if ($pack_part ne $part);
6868: if (defined($packagetab{"$pack_type&$name&default"})) {
6869: return $packagetab{"$pack_type&$name&default"};
6870: }
6871: }
6872: # look for any possible matching non extension_ package
6873: foreach my $package (@specifics) {
6874: my (undef,$pack_type,$pack_part)=@{$package};
6875: if (defined($packagetab{"$pack_type&$name&default"})) {
6876: return $packagetab{"$pack_type&$name&default"};
6877: }
6878: if ($pack_type eq 'part') { $pack_part='0'; }
6879: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
6880: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
6881: }
6882: }
6883: # look for any posible extension_ match
6884: foreach my $package (@extension) {
6885: my ($package,$pack_type)=@{$package};
6886: if (defined($packagetab{"$pack_type&$name&default"})) {
6887: return $packagetab{"$pack_type&$name&default"};
6888: }
6889: if (defined($packagetab{$package."&$name&default"})) {
6890: return $packagetab{$package."&$name&default"};
6891: }
6892: }
6893: # look for a global default setting
6894: if ($do_default && defined($packagetab{"default&$name&default"})) {
6895: return $packagetab{"default&$name&default"};
6896: }
6897: return undef;
6898: }
6899:
6900: sub add_prefix_and_part {
6901: my ($prefix,$part)=@_;
6902: my $keyroot;
6903: if (defined($prefix) && $prefix !~ /^__/) {
6904: # prefix that has a part already
6905: $keyroot=$prefix;
6906: } elsif (defined($prefix)) {
6907: # prefix that is missing a part
6908: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
6909: } else {
6910: # no prefix at all
6911: if (defined($part)) { $keyroot='_'.$part; }
6912: }
6913: return $keyroot;
6914: }
6915:
6916: # ---------------------------------------------------------------- Get metadata
6917:
6918: my %metaentry;
6919: sub metadata {
6920: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
6921: $uri=&declutter($uri);
6922: # if it is a non metadata possible uri return quickly
6923: if (($uri eq '') ||
6924: (($uri =~ m|^/*adm/|) &&
6925: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
6926: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) ) {
6927: return undef;
6928: }
6929: if (($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/})
6930: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
6931: return undef;
6932: }
6933: my $filename=$uri;
6934: $uri=~s/\.meta$//;
6935: #
6936: # Is the metadata already cached?
6937: # Look at timestamp of caching
6938: # Everything is cached by the main uri, libraries are never directly cached
6939: #
6940: if (!defined($liburi)) {
6941: my ($result,$cached)=&is_cached_new('meta',$uri);
6942: if (defined($cached)) { return $result->{':'.$what}; }
6943: }
6944: {
6945: #
6946: # Is this a recursive call for a library?
6947: #
6948: # if (! exists($metacache{$uri})) {
6949: # $metacache{$uri}={};
6950: # }
6951: my $cachetime = 60*60;
6952: if ($liburi) {
6953: $liburi=&declutter($liburi);
6954: $filename=$liburi;
6955: } else {
6956: &devalidate_cache_new('meta',$uri);
6957: undef(%metaentry);
6958: }
6959: my %metathesekeys=();
6960: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
6961: my $metastring;
6962: if ($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/}) {
6963: my $which = &hreflocation('','/'.($liburi || $uri));
6964: $metastring =
6965: &Apache::lonnet::ssi_body($which,
6966: ('grade_target' => 'meta'));
6967: $cachetime = 1; # only want this cached in the child not long term
6968: } elsif ($uri !~ m -^(editupload)/-) {
6969: my $file=&filelocation('',&clutter($filename));
6970: #push(@{$metaentry{$uri.'.file'}},$file);
6971: $metastring=&getfile($file);
6972: }
6973: my $parser=HTML::LCParser->new(\$metastring);
6974: my $token;
6975: undef %metathesekeys;
6976: while ($token=$parser->get_token) {
6977: if ($token->[0] eq 'S') {
6978: if (defined($token->[2]->{'package'})) {
6979: #
6980: # This is a package - get package info
6981: #
6982: my $package=$token->[2]->{'package'};
6983: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
6984: if (defined($token->[2]->{'id'})) {
6985: $keyroot.='_'.$token->[2]->{'id'};
6986: }
6987: if ($metaentry{':packages'}) {
6988: $metaentry{':packages'}.=','.$package.$keyroot;
6989: } else {
6990: $metaentry{':packages'}=$package.$keyroot;
6991: }
6992: foreach my $pack_entry (keys(%packagetab)) {
6993: my $part=$keyroot;
6994: $part=~s/^\_//;
6995: if ($pack_entry=~/^\Q$package\E\&/ ||
6996: $pack_entry=~/^\Q$package\E_0\&/) {
6997: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
6998: # ignore package.tab specified default values
6999: # here &package_tab_default() will fetch those
7000: if ($subp eq 'default') { next; }
7001: my $value=$packagetab{$pack_entry};
7002: my $unikey;
7003: if ($pack =~ /_0$/) {
7004: $unikey='parameter_0_'.$name;
7005: $part=0;
7006: } else {
7007: $unikey='parameter'.$keyroot.'_'.$name;
7008: }
7009: if ($subp eq 'display') {
7010: $value.=' [Part: '.$part.']';
7011: }
7012: $metaentry{':'.$unikey.'.part'}=$part;
7013: $metathesekeys{$unikey}=1;
7014: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
7015: $metaentry{':'.$unikey.'.'.$subp}=$value;
7016: }
7017: if (defined($metaentry{':'.$unikey.'.default'})) {
7018: $metaentry{':'.$unikey}=
7019: $metaentry{':'.$unikey.'.default'};
7020: }
7021: }
7022: }
7023: } else {
7024: #
7025: # This is not a package - some other kind of start tag
7026: #
7027: my $entry=$token->[1];
7028: my $unikey;
7029: if ($entry eq 'import') {
7030: $unikey='';
7031: } else {
7032: $unikey=$entry;
7033: }
7034: $unikey.=&add_prefix_and_part($prefix,$token->[2]->{'part'});
7035:
7036: if (defined($token->[2]->{'id'})) {
7037: $unikey.='_'.$token->[2]->{'id'};
7038: }
7039:
7040: if ($entry eq 'import') {
7041: #
7042: # Importing a library here
7043: #
7044: if ($depthcount<20) {
7045: my $location=$parser->get_text('/import');
7046: my $dir=$filename;
7047: $dir=~s|[^/]*$||;
7048: $location=&filelocation($dir,$location);
7049: my $metadata =
7050: &metadata($uri,'keys', $location,$unikey,
7051: $depthcount+1);
7052: foreach my $meta (split(',',$metadata)) {
7053: $metaentry{':'.$meta}=$metaentry{':'.$meta};
7054: $metathesekeys{$meta}=1;
7055: }
7056: }
7057: } else {
7058:
7059: if (defined($token->[2]->{'name'})) {
7060: $unikey.='_'.$token->[2]->{'name'};
7061: }
7062: $metathesekeys{$unikey}=1;
7063: foreach my $param (@{$token->[3]}) {
7064: $metaentry{':'.$unikey.'.'.$param} =
7065: $token->[2]->{$param};
7066: }
7067: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
7068: my $default=$metaentry{':'.$unikey.'.default'};
7069: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
7070: # only ws inside the tag, and not in default, so use default
7071: # as value
7072: $metaentry{':'.$unikey}=$default;
7073: } elsif ( $internaltext =~ /\S/ ) {
7074: # something interesting inside the tag
7075: $metaentry{':'.$unikey}=$internaltext;
7076: } else {
7077: # no interesting values, don't set a default
7078: }
7079: # end of not-a-package not-a-library import
7080: }
7081: # end of not-a-package start tag
7082: }
7083: # the next is the end of "start tag"
7084: }
7085: }
7086: my ($extension) = ($uri =~ /\.(\w+)$/);
7087: $extension = lc($extension);
7088: if ($extension eq 'htm') { $extension='html'; }
7089:
7090: foreach my $key (keys(%packagetab)) {
7091: #no specific packages #how's our extension
7092: if ($key!~/^extension_\Q$extension\E&/) { next; }
7093: &metadata_create_package_def($uri,$key,'extension_'.$extension,
7094: \%metathesekeys);
7095: }
7096:
7097: if (!exists($metaentry{':packages'})
7098: || $packagetab{"import_defaults&extension_$extension"}) {
7099: foreach my $key (keys(%packagetab)) {
7100: #no specific packages well let's get default then
7101: if ($key!~/^default&/) { next; }
7102: &metadata_create_package_def($uri,$key,'default',
7103: \%metathesekeys);
7104: }
7105: }
7106: # are there custom rights to evaluate
7107: if ($metaentry{':copyright'} eq 'custom') {
7108:
7109: #
7110: # Importing a rights file here
7111: #
7112: unless ($depthcount) {
7113: my $location=$metaentry{':customdistributionfile'};
7114: my $dir=$filename;
7115: $dir=~s|[^/]*$||;
7116: $location=&filelocation($dir,$location);
7117: my $rights_metadata =
7118: &metadata($uri,'keys',$location,'_rights',
7119: $depthcount+1);
7120: foreach my $rights (split(',',$rights_metadata)) {
7121: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
7122: $metathesekeys{$rights}=1;
7123: }
7124: }
7125: }
7126: # uniqifiy package listing
7127: my %seen;
7128: my @uniq_packages =
7129: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
7130: $metaentry{':packages'} = join(',',@uniq_packages);
7131:
7132: $metaentry{':keys'} = join(',',keys(%metathesekeys));
7133: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
7134: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
7135: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
7136: # this is the end of "was not already recently cached
7137: }
7138: return $metaentry{':'.$what};
7139: }
7140:
7141: sub metadata_create_package_def {
7142: my ($uri,$key,$package,$metathesekeys)=@_;
7143: my ($pack,$name,$subp)=split(/\&/,$key);
7144: if ($subp eq 'default') { next; }
7145:
7146: if (defined($metaentry{':packages'})) {
7147: $metaentry{':packages'}.=','.$package;
7148: } else {
7149: $metaentry{':packages'}=$package;
7150: }
7151: my $value=$packagetab{$key};
7152: my $unikey;
7153: $unikey='parameter_0_'.$name;
7154: $metaentry{':'.$unikey.'.part'}=0;
7155: $$metathesekeys{$unikey}=1;
7156: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
7157: $metaentry{':'.$unikey.'.'.$subp}=$value;
7158: }
7159: if (defined($metaentry{':'.$unikey.'.default'})) {
7160: $metaentry{':'.$unikey}=
7161: $metaentry{':'.$unikey.'.default'};
7162: }
7163: }
7164:
7165: sub metadata_generate_part0 {
7166: my ($metadata,$metacache,$uri) = @_;
7167: my %allnames;
7168: foreach my $metakey (keys(%$metadata)) {
7169: if ($metakey=~/^parameter\_(.*)/) {
7170: my $part=$$metacache{':'.$metakey.'.part'};
7171: my $name=$$metacache{':'.$metakey.'.name'};
7172: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
7173: $allnames{$name}=$part;
7174: }
7175: }
7176: }
7177: foreach my $name (keys(%allnames)) {
7178: $$metadata{"parameter_0_$name"}=1;
7179: my $key=":parameter_0_$name";
7180: $$metacache{"$key.part"}='0';
7181: $$metacache{"$key.name"}=$name;
7182: $$metacache{"$key.type"}=$$metacache{':parameter_'.
7183: $allnames{$name}.'_'.$name.
7184: '.type'};
7185: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
7186: '.display'};
7187: my $expr='[Part: '.$allnames{$name}.']';
7188: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
7189: $$metacache{"$key.display"}=$olddis;
7190: }
7191: }
7192:
7193: # ------------------------------------------------------ Devalidate title cache
7194:
7195: sub devalidate_title_cache {
7196: my ($url)=@_;
7197: if (!$env{'request.course.id'}) { return; }
7198: my $symb=&symbread($url);
7199: if (!$symb) { return; }
7200: my $key=$env{'request.course.id'}."\0".$symb;
7201: &devalidate_cache_new('title',$key);
7202: }
7203:
7204: # ------------------------------------------------- Get the title of a resource
7205:
7206: sub gettitle {
7207: my $urlsymb=shift;
7208: my $symb=&symbread($urlsymb);
7209: if ($symb) {
7210: my $key=$env{'request.course.id'}."\0".$symb;
7211: my ($result,$cached)=&is_cached_new('title',$key);
7212: if (defined($cached)) {
7213: return $result;
7214: }
7215: my ($map,$resid,$url)=&decode_symb($symb);
7216: my $title='';
7217: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
7218: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
7219: } else {
7220: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7221: &GDBM_READER(),0640)) {
7222: my $mapid=$bighash{'map_pc_'.&clutter($map)};
7223: $title=$bighash{'title_'.$mapid.'.'.$resid};
7224: untie(%bighash);
7225: }
7226: }
7227: $title=~s/\&colon\;/\:/gs;
7228: if ($title) {
7229: return &do_cache_new('title',$key,$title,600);
7230: }
7231: $urlsymb=$url;
7232: }
7233: my $title=&metadata($urlsymb,'title');
7234: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
7235: return $title;
7236: }
7237:
7238: sub get_slot {
7239: my ($which,$cnum,$cdom)=@_;
7240: if (!$cnum || !$cdom) {
7241: (undef,my $courseid)=&whichuser();
7242: $cdom=$env{'course.'.$courseid.'.domain'};
7243: $cnum=$env{'course.'.$courseid.'.num'};
7244: }
7245: my $key=join("\0",'slots',$cdom,$cnum,$which);
7246: my %slotinfo;
7247: if (exists($remembered{$key})) {
7248: $slotinfo{$which} = $remembered{$key};
7249: } else {
7250: %slotinfo=&get('slots',[$which],$cdom,$cnum);
7251: &Apache::lonhomework::showhash(%slotinfo);
7252: my ($tmp)=keys(%slotinfo);
7253: if ($tmp=~/^error:/) { return (); }
7254: $remembered{$key} = $slotinfo{$which};
7255: }
7256: if (ref($slotinfo{$which}) eq 'HASH') {
7257: return %{$slotinfo{$which}};
7258: }
7259: return $slotinfo{$which};
7260: }
7261: # ------------------------------------------------- Update symbolic store links
7262:
7263: sub symblist {
7264: my ($mapname,%newhash)=@_;
7265: $mapname=&deversion(&declutter($mapname));
7266: my %hash;
7267: if (($env{'request.course.fn'}) && (%newhash)) {
7268: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
7269: &GDBM_WRCREAT(),0640)) {
7270: foreach my $url (keys %newhash) {
7271: next if ($url eq 'last_known'
7272: && $env{'form.no_update_last_known'});
7273: $hash{declutter($url)}=&encode_symb($mapname,
7274: $newhash{$url}->[1],
7275: $newhash{$url}->[0]);
7276: }
7277: if (untie(%hash)) {
7278: return 'ok';
7279: }
7280: }
7281: }
7282: return 'error';
7283: }
7284:
7285: # --------------------------------------------------------------- Verify a symb
7286:
7287: sub symbverify {
7288: my ($symb,$thisurl)=@_;
7289: my $thisfn=$thisurl;
7290: $thisfn=&declutter($thisfn);
7291: # direct jump to resource in page or to a sequence - will construct own symbs
7292: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
7293: # check URL part
7294: my ($map,$resid,$url)=&decode_symb($symb);
7295:
7296: unless ($url eq $thisfn) { return 0; }
7297:
7298: $symb=&symbclean($symb);
7299: $thisurl=&deversion($thisurl);
7300: $thisfn=&deversion($thisfn);
7301:
7302: my %bighash;
7303: my $okay=0;
7304:
7305: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7306: &GDBM_READER(),0640)) {
7307: my $ids=$bighash{'ids_'.&clutter($thisurl)};
7308: unless ($ids) {
7309: $ids=$bighash{'ids_/'.$thisurl};
7310: }
7311: if ($ids) {
7312: # ------------------------------------------------------------------- Has ID(s)
7313: foreach my $id (split(/\,/,$ids)) {
7314: my ($mapid,$resid)=split(/\./,$id);
7315: if (
7316: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
7317: eq $symb) {
7318: if (($env{'request.role.adv'}) ||
7319: $bighash{'encrypted_'.$id} eq $env{'request.enc'}) {
7320: $okay=1;
7321: }
7322: }
7323: }
7324: }
7325: untie(%bighash);
7326: }
7327: return $okay;
7328: }
7329:
7330: # --------------------------------------------------------------- Clean-up symb
7331:
7332: sub symbclean {
7333: my $symb=shift;
7334: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
7335: # remove version from map
7336: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
7337:
7338: # remove version from URL
7339: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
7340:
7341: # remove wrapper
7342:
7343: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
7344: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
7345: return $symb;
7346: }
7347:
7348: # ---------------------------------------------- Split symb to find map and url
7349:
7350: sub encode_symb {
7351: my ($map,$resid,$url)=@_;
7352: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
7353: }
7354:
7355: sub decode_symb {
7356: my $symb=shift;
7357: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
7358: my ($map,$resid,$url)=split(/___/,$symb);
7359: return (&fixversion($map),$resid,&fixversion($url));
7360: }
7361:
7362: sub fixversion {
7363: my $fn=shift;
7364: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
7365: my %bighash;
7366: my $uri=&clutter($fn);
7367: my $key=$env{'request.course.id'}.'_'.$uri;
7368: # is this cached?
7369: my ($result,$cached)=&is_cached_new('courseresversion',$key);
7370: if (defined($cached)) { return $result; }
7371: # unfortunately not cached, or expired
7372: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7373: &GDBM_READER(),0640)) {
7374: if ($bighash{'version_'.$uri}) {
7375: my $version=$bighash{'version_'.$uri};
7376: unless (($version eq 'mostrecent') ||
7377: ($version==&getversion($uri))) {
7378: $uri=~s/\.(\w+)$/\.$version\.$1/;
7379: }
7380: }
7381: untie %bighash;
7382: }
7383: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
7384: }
7385:
7386: sub deversion {
7387: my $url=shift;
7388: $url=~s/\.\d+\.(\w+)$/\.$1/;
7389: return $url;
7390: }
7391:
7392: # ------------------------------------------------------ Return symb list entry
7393:
7394: sub symbread {
7395: my ($thisfn,$donotrecurse)=@_;
7396: my $cache_str='request.symbread.cached.'.$thisfn;
7397: if (defined($env{$cache_str})) { return $env{$cache_str}; }
7398: # no filename provided? try from environment
7399: unless ($thisfn) {
7400: if ($env{'request.symb'}) {
7401: return $env{$cache_str}=&symbclean($env{'request.symb'});
7402: }
7403: $thisfn=$env{'request.filename'};
7404: }
7405: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
7406: # is that filename actually a symb? Verify, clean, and return
7407: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
7408: if (&symbverify($thisfn,$1)) {
7409: return $env{$cache_str}=&symbclean($thisfn);
7410: }
7411: }
7412: $thisfn=declutter($thisfn);
7413: my %hash;
7414: my %bighash;
7415: my $syval='';
7416: if (($env{'request.course.fn'}) && ($thisfn)) {
7417: my $targetfn = $thisfn;
7418: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
7419: $targetfn = 'adm/wrapper/'.$thisfn;
7420: }
7421: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
7422: $targetfn=$1;
7423: }
7424: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
7425: &GDBM_READER(),0640)) {
7426: $syval=$hash{$targetfn};
7427: untie(%hash);
7428: }
7429: # ---------------------------------------------------------- There was an entry
7430: if ($syval) {
7431: #unless ($syval=~/\_\d+$/) {
7432: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
7433: #&appenv('request.ambiguous' => $thisfn);
7434: #return $env{$cache_str}='';
7435: #}
7436: #$syval.=$1;
7437: #}
7438: } else {
7439: # ------------------------------------------------------- Was not in symb table
7440: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7441: &GDBM_READER(),0640)) {
7442: # ---------------------------------------------- Get ID(s) for current resource
7443: my $ids=$bighash{'ids_'.&clutter($thisfn)};
7444: unless ($ids) {
7445: $ids=$bighash{'ids_/'.$thisfn};
7446: }
7447: unless ($ids) {
7448: # alias?
7449: $ids=$bighash{'mapalias_'.$thisfn};
7450: }
7451: if ($ids) {
7452: # ------------------------------------------------------------------- Has ID(s)
7453: my @possibilities=split(/\,/,$ids);
7454: if ($#possibilities==0) {
7455: # ----------------------------------------------- There is only one possibility
7456: my ($mapid,$resid)=split(/\./,$ids);
7457: $syval=&encode_symb($bighash{'map_id_'.$mapid},
7458: $resid,$thisfn);
7459: } elsif (!$donotrecurse) {
7460: # ------------------------------------------ There is more than one possibility
7461: my $realpossible=0;
7462: foreach my $id (@possibilities) {
7463: my $file=$bighash{'src_'.$id};
7464: if (&allowed('bre',$file)) {
7465: my ($mapid,$resid)=split(/\./,$id);
7466: if ($bighash{'map_type_'.$mapid} ne 'page') {
7467: $realpossible++;
7468: $syval=&encode_symb($bighash{'map_id_'.$mapid},
7469: $resid,$thisfn);
7470: }
7471: }
7472: }
7473: if ($realpossible!=1) { $syval=''; }
7474: } else {
7475: $syval='';
7476: }
7477: }
7478: untie(%bighash)
7479: }
7480: }
7481: if ($syval) {
7482: return $env{$cache_str}=$syval;
7483: }
7484: }
7485: &appenv('request.ambiguous' => $thisfn);
7486: return $env{$cache_str}='';
7487: }
7488:
7489: # ---------------------------------------------------------- Return random seed
7490:
7491: sub numval {
7492: my $txt=shift;
7493: $txt=~tr/A-J/0-9/;
7494: $txt=~tr/a-j/0-9/;
7495: $txt=~tr/K-T/0-9/;
7496: $txt=~tr/k-t/0-9/;
7497: $txt=~tr/U-Z/0-5/;
7498: $txt=~tr/u-z/0-5/;
7499: $txt=~s/\D//g;
7500: if ($_64bit) { if ($txt > 2**32) { return -1; } }
7501: return int($txt);
7502: }
7503:
7504: sub numval2 {
7505: my $txt=shift;
7506: $txt=~tr/A-J/0-9/;
7507: $txt=~tr/a-j/0-9/;
7508: $txt=~tr/K-T/0-9/;
7509: $txt=~tr/k-t/0-9/;
7510: $txt=~tr/U-Z/0-5/;
7511: $txt=~tr/u-z/0-5/;
7512: $txt=~s/\D//g;
7513: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
7514: my $total;
7515: foreach my $val (@txts) { $total+=$val; }
7516: if ($_64bit) { if ($total > 2**32) { return -1; } }
7517: return int($total);
7518: }
7519:
7520: sub numval3 {
7521: use integer;
7522: my $txt=shift;
7523: $txt=~tr/A-J/0-9/;
7524: $txt=~tr/a-j/0-9/;
7525: $txt=~tr/K-T/0-9/;
7526: $txt=~tr/k-t/0-9/;
7527: $txt=~tr/U-Z/0-5/;
7528: $txt=~tr/u-z/0-5/;
7529: $txt=~s/\D//g;
7530: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
7531: my $total;
7532: foreach my $val (@txts) { $total+=$val; }
7533: if ($_64bit) { $total=(($total<<32)>>32); }
7534: return $total;
7535: }
7536:
7537: sub digest {
7538: my ($data)=@_;
7539: my $digest=&Digest::MD5::md5($data);
7540: my ($a,$b,$c,$d)=unpack("iiii",$digest);
7541: my ($e,$f);
7542: {
7543: use integer;
7544: $e=($a+$b);
7545: $f=($c+$d);
7546: if ($_64bit) {
7547: $e=(($e<<32)>>32);
7548: $f=(($f<<32)>>32);
7549: }
7550: }
7551: if (wantarray) {
7552: return ($e,$f);
7553: } else {
7554: my $g;
7555: {
7556: use integer;
7557: $g=($e+$f);
7558: if ($_64bit) {
7559: $g=(($g<<32)>>32);
7560: }
7561: }
7562: return $g;
7563: }
7564: }
7565:
7566: sub latest_rnd_algorithm_id {
7567: return '64bit5';
7568: }
7569:
7570: sub get_rand_alg {
7571: my ($courseid)=@_;
7572: if (!$courseid) { $courseid=(&whichuser())[1]; }
7573: if ($courseid) {
7574: return $env{"course.$courseid.rndseed"};
7575: }
7576: return &latest_rnd_algorithm_id();
7577: }
7578:
7579: sub validCODE {
7580: my ($CODE)=@_;
7581: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
7582: return 0;
7583: }
7584:
7585: sub getCODE {
7586: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
7587: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
7588: defined($Apache::lonhomework::parsing_a_task) ) &&
7589: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
7590: return $Apache::lonhomework::history{'resource.CODE'};
7591: }
7592: return undef;
7593: }
7594:
7595: sub rndseed {
7596: my ($symb,$courseid,$domain,$username)=@_;
7597: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
7598: if (!defined($symb)) {
7599: unless ($symb=$wsymb) { return time; }
7600: }
7601: if (!$courseid) { $courseid=$wcourseid; }
7602: if (!$domain) { $domain=$wdomain; }
7603: if (!$username) { $username=$wusername }
7604: my $which=&get_rand_alg();
7605:
7606: if (defined(&getCODE())) {
7607: if ($which eq '64bit5') {
7608: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
7609: } elsif ($which eq '64bit4') {
7610: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
7611: } else {
7612: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
7613: }
7614: } elsif ($which eq '64bit5') {
7615: return &rndseed_64bit5($symb,$courseid,$domain,$username);
7616: } elsif ($which eq '64bit4') {
7617: return &rndseed_64bit4($symb,$courseid,$domain,$username);
7618: } elsif ($which eq '64bit3') {
7619: return &rndseed_64bit3($symb,$courseid,$domain,$username);
7620: } elsif ($which eq '64bit2') {
7621: return &rndseed_64bit2($symb,$courseid,$domain,$username);
7622: } elsif ($which eq '64bit') {
7623: return &rndseed_64bit($symb,$courseid,$domain,$username);
7624: }
7625: return &rndseed_32bit($symb,$courseid,$domain,$username);
7626: }
7627:
7628: sub rndseed_32bit {
7629: my ($symb,$courseid,$domain,$username)=@_;
7630: {
7631: use integer;
7632: my $symbchck=unpack("%32C*",$symb) << 27;
7633: my $symbseed=numval($symb) << 22;
7634: my $namechck=unpack("%32C*",$username) << 17;
7635: my $nameseed=numval($username) << 12;
7636: my $domainseed=unpack("%32C*",$domain) << 7;
7637: my $courseseed=unpack("%32C*",$courseid);
7638: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
7639: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7640: #&logthis("rndseed :$num:$symb");
7641: if ($_64bit) { $num=(($num<<32)>>32); }
7642: return $num;
7643: }
7644: }
7645:
7646: sub rndseed_64bit {
7647: my ($symb,$courseid,$domain,$username)=@_;
7648: {
7649: use integer;
7650: my $symbchck=unpack("%32S*",$symb) << 21;
7651: my $symbseed=numval($symb) << 10;
7652: my $namechck=unpack("%32S*",$username);
7653:
7654: my $nameseed=numval($username) << 21;
7655: my $domainseed=unpack("%32S*",$domain) << 10;
7656: my $courseseed=unpack("%32S*",$courseid);
7657:
7658: my $num1=$symbchck+$symbseed+$namechck;
7659: my $num2=$nameseed+$domainseed+$courseseed;
7660: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7661: #&logthis("rndseed :$num:$symb");
7662: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7663: return "$num1,$num2";
7664: }
7665: }
7666:
7667: sub rndseed_64bit2 {
7668: my ($symb,$courseid,$domain,$username)=@_;
7669: {
7670: use integer;
7671: # strings need to be an even # of cahracters long, it it is odd the
7672: # last characters gets thrown away
7673: my $symbchck=unpack("%32S*",$symb.' ') << 21;
7674: my $symbseed=numval($symb) << 10;
7675: my $namechck=unpack("%32S*",$username.' ');
7676:
7677: my $nameseed=numval($username) << 21;
7678: my $domainseed=unpack("%32S*",$domain.' ') << 10;
7679: my $courseseed=unpack("%32S*",$courseid.' ');
7680:
7681: my $num1=$symbchck+$symbseed+$namechck;
7682: my $num2=$nameseed+$domainseed+$courseseed;
7683: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7684: #&logthis("rndseed :$num:$symb");
7685: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7686: return "$num1,$num2";
7687: }
7688: }
7689:
7690: sub rndseed_64bit3 {
7691: my ($symb,$courseid,$domain,$username)=@_;
7692: {
7693: use integer;
7694: # strings need to be an even # of cahracters long, it it is odd the
7695: # last characters gets thrown away
7696: my $symbchck=unpack("%32S*",$symb.' ') << 21;
7697: my $symbseed=numval2($symb) << 10;
7698: my $namechck=unpack("%32S*",$username.' ');
7699:
7700: my $nameseed=numval2($username) << 21;
7701: my $domainseed=unpack("%32S*",$domain.' ') << 10;
7702: my $courseseed=unpack("%32S*",$courseid.' ');
7703:
7704: my $num1=$symbchck+$symbseed+$namechck;
7705: my $num2=$nameseed+$domainseed+$courseseed;
7706: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7707: #&logthis("rndseed :$num1:$num2:$_64bit");
7708: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7709:
7710: return "$num1:$num2";
7711: }
7712: }
7713:
7714: sub rndseed_64bit4 {
7715: my ($symb,$courseid,$domain,$username)=@_;
7716: {
7717: use integer;
7718: # strings need to be an even # of cahracters long, it it is odd the
7719: # last characters gets thrown away
7720: my $symbchck=unpack("%32S*",$symb.' ') << 21;
7721: my $symbseed=numval3($symb) << 10;
7722: my $namechck=unpack("%32S*",$username.' ');
7723:
7724: my $nameseed=numval3($username) << 21;
7725: my $domainseed=unpack("%32S*",$domain.' ') << 10;
7726: my $courseseed=unpack("%32S*",$courseid.' ');
7727:
7728: my $num1=$symbchck+$symbseed+$namechck;
7729: my $num2=$nameseed+$domainseed+$courseseed;
7730: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7731: #&logthis("rndseed :$num1:$num2:$_64bit");
7732: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7733:
7734: return "$num1:$num2";
7735: }
7736: }
7737:
7738: sub rndseed_64bit5 {
7739: my ($symb,$courseid,$domain,$username)=@_;
7740: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
7741: return "$num1:$num2";
7742: }
7743:
7744: sub rndseed_CODE_64bit {
7745: my ($symb,$courseid,$domain,$username)=@_;
7746: {
7747: use integer;
7748: my $symbchck=unpack("%32S*",$symb.' ') << 16;
7749: my $symbseed=numval2($symb);
7750: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
7751: my $CODEseed=numval(&getCODE());
7752: my $courseseed=unpack("%32S*",$courseid.' ');
7753: my $num1=$symbseed+$CODEchck;
7754: my $num2=$CODEseed+$courseseed+$symbchck;
7755: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
7756: #&logthis("rndseed :$num1:$num2:$symb");
7757: if ($_64bit) { $num1=(($num1<<32)>>32); }
7758: if ($_64bit) { $num2=(($num2<<32)>>32); }
7759: return "$num1:$num2";
7760: }
7761: }
7762:
7763: sub rndseed_CODE_64bit4 {
7764: my ($symb,$courseid,$domain,$username)=@_;
7765: {
7766: use integer;
7767: my $symbchck=unpack("%32S*",$symb.' ') << 16;
7768: my $symbseed=numval3($symb);
7769: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
7770: my $CODEseed=numval3(&getCODE());
7771: my $courseseed=unpack("%32S*",$courseid.' ');
7772: my $num1=$symbseed+$CODEchck;
7773: my $num2=$CODEseed+$courseseed+$symbchck;
7774: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
7775: #&logthis("rndseed :$num1:$num2:$symb");
7776: if ($_64bit) { $num1=(($num1<<32)>>32); }
7777: if ($_64bit) { $num2=(($num2<<32)>>32); }
7778: return "$num1:$num2";
7779: }
7780: }
7781:
7782: sub rndseed_CODE_64bit5 {
7783: my ($symb,$courseid,$domain,$username)=@_;
7784: my $code = &getCODE();
7785: my ($num1,$num2)=&digest("$symb,$courseid,$code");
7786: return "$num1:$num2";
7787: }
7788:
7789: sub setup_random_from_rndseed {
7790: my ($rndseed)=@_;
7791: if ($rndseed =~/([,:])/) {
7792: my ($num1,$num2)=split(/[,:]/,$rndseed);
7793: &Math::Random::random_set_seed(abs($num1),abs($num2));
7794: } else {
7795: &Math::Random::random_set_seed_from_phrase($rndseed);
7796: }
7797: }
7798:
7799: sub latest_receipt_algorithm_id {
7800: return 'receipt3';
7801: }
7802:
7803: sub recunique {
7804: my $fucourseid=shift;
7805: my $unique;
7806: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
7807: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
7808: $unique=$env{"course.$fucourseid.internal.encseed"};
7809: } else {
7810: $unique=$perlvar{'lonReceipt'};
7811: }
7812: return unpack("%32C*",$unique);
7813: }
7814:
7815: sub recprefix {
7816: my $fucourseid=shift;
7817: my $prefix;
7818: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
7819: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
7820: $prefix=$env{"course.$fucourseid.internal.encpref"};
7821: } else {
7822: $prefix=$perlvar{'lonHostID'};
7823: }
7824: return unpack("%32C*",$prefix);
7825: }
7826:
7827: sub ireceipt {
7828: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
7829:
7830: my $return =&recprefix($fucourseid).'-';
7831:
7832: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
7833: $env{'request.state'} eq 'construct') {
7834: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
7835: return $return;
7836: }
7837:
7838: my $cuname=unpack("%32C*",$funame);
7839: my $cudom=unpack("%32C*",$fudom);
7840: my $cucourseid=unpack("%32C*",$fucourseid);
7841: my $cusymb=unpack("%32C*",$fusymb);
7842: my $cunique=&recunique($fucourseid);
7843: my $cpart=unpack("%32S*",$part);
7844: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
7845:
7846: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
7847:
7848: $return.= ($cunique%$cuname+
7849: $cunique%$cudom+
7850: $cusymb%$cuname+
7851: $cusymb%$cudom+
7852: $cucourseid%$cuname+
7853: $cucourseid%$cudom+
7854: $cpart%$cuname+
7855: $cpart%$cudom);
7856: } else {
7857: $return.= ($cunique%$cuname+
7858: $cunique%$cudom+
7859: $cusymb%$cuname+
7860: $cusymb%$cudom+
7861: $cucourseid%$cuname+
7862: $cucourseid%$cudom);
7863: }
7864: return $return;
7865: }
7866:
7867: sub receipt {
7868: my ($part)=@_;
7869: my ($symb,$courseid,$domain,$name) = &whichuser();
7870: return &ireceipt($name,$domain,$courseid,$symb,$part);
7871: }
7872:
7873: sub whichuser {
7874: my ($passedsymb)=@_;
7875: my ($symb,$courseid,$domain,$name,$publicuser);
7876: if (defined($env{'form.grade_symb'})) {
7877: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
7878: my $allowed=&allowed('vgr',$tmp_courseid);
7879: if (!$allowed &&
7880: exists($env{'request.course.sec'}) &&
7881: $env{'request.course.sec'} !~ /^\s*$/) {
7882: $allowed=&allowed('vgr',$tmp_courseid.
7883: '/'.$env{'request.course.sec'});
7884: }
7885: if ($allowed) {
7886: ($symb)=&get_env_multiple('form.grade_symb');
7887: $courseid=$tmp_courseid;
7888: ($domain)=&get_env_multiple('form.grade_domain');
7889: ($name)=&get_env_multiple('form.grade_username');
7890: return ($symb,$courseid,$domain,$name,$publicuser);
7891: }
7892: }
7893: if (!$passedsymb) {
7894: $symb=&symbread();
7895: } else {
7896: $symb=$passedsymb;
7897: }
7898: $courseid=$env{'request.course.id'};
7899: $domain=$env{'user.domain'};
7900: $name=$env{'user.name'};
7901: if ($name eq 'public' && $domain eq 'public') {
7902: if (!defined($env{'form.username'})) {
7903: $env{'form.username'}.=time.rand(10000000);
7904: }
7905: $name.=$env{'form.username'};
7906: }
7907: return ($symb,$courseid,$domain,$name,$publicuser);
7908:
7909: }
7910:
7911: # ------------------------------------------------------------ Serves up a file
7912: # returns either the contents of the file or
7913: # -1 if the file doesn't exist
7914: #
7915: # if the target is a file that was uploaded via DOCS,
7916: # a check will be made to see if a current copy exists on the local server,
7917: # if it does this will be served, otherwise a copy will be retrieved from
7918: # the home server for the course and stored in /home/httpd/html/userfiles on
7919: # the local server.
7920:
7921: sub getfile {
7922: my ($file) = @_;
7923: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
7924: &repcopy($file);
7925: return &readfile($file);
7926: }
7927:
7928: sub repcopy_userfile {
7929: my ($file)=@_;
7930: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
7931: if ($file =~ m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
7932: my ($cdom,$cnum,$filename) =
7933: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
7934: my $uri="/uploaded/$cdom/$cnum/$filename";
7935: if (-e "$file") {
7936: # we already have a local copy, check it out
7937: my @fileinfo = stat($file);
7938: my $rtncode;
7939: my $info;
7940: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
7941: if ($lwpresp ne 'ok') {
7942: # there is no such file anymore, even though we had a local copy
7943: if ($rtncode eq '404') {
7944: unlink($file);
7945: }
7946: return -1;
7947: }
7948: if ($info < $fileinfo[9]) {
7949: # nice, the file we have is up-to-date, just say okay
7950: return 'ok';
7951: } else {
7952: # the file is outdated, get rid of it
7953: unlink($file);
7954: }
7955: }
7956: # one way or the other, at this point, we don't have the file
7957: # construct the correct path for the file
7958: my @parts = ($cdom,$cnum);
7959: if ($filename =~ m|^(.+)/[^/]+$|) {
7960: push @parts, split(/\//,$1);
7961: }
7962: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
7963: foreach my $part (@parts) {
7964: $path .= '/'.$part;
7965: if (!-e $path) {
7966: mkdir($path,0770);
7967: }
7968: }
7969: # now the path exists for sure
7970: # get a user agent
7971: my $ua=new LWP::UserAgent;
7972: my $transferfile=$file.'.in.transfer';
7973: # FIXME: this should flock
7974: if (-e $transferfile) { return 'ok'; }
7975: my $request;
7976: $uri=~s/^\///;
7977: $request=new HTTP::Request('GET','http://'.&hostname(&homeserver($cnum,$cdom)).'/raw/'.$uri);
7978: my $response=$ua->request($request,$transferfile);
7979: # did it work?
7980: if ($response->is_error()) {
7981: unlink($transferfile);
7982: &logthis("Userfile repcopy failed for $uri");
7983: return -1;
7984: }
7985: # worked, rename the transfer file
7986: rename($transferfile,$file);
7987: return 'ok';
7988: }
7989:
7990: sub tokenwrapper {
7991: my $uri=shift;
7992: $uri=~s|^http\://([^/]+)||;
7993: $uri=~s|^/||;
7994: $env{'user.environment'}=~/\/([^\/]+)\.id/;
7995: my $token=$1;
7996: my (undef,$udom,$uname,$file)=split('/',$uri,4);
7997: if ($udom && $uname && $file) {
7998: $file=~s|(\?\.*)*$||;
7999: &appenv("userfile.$udom/$uname/$file" => $env{'request.course.id'});
8000: return 'http://'.&hostname(&homeserver($uname,$udom)).'/'.$uri.
8001: (($uri=~/\?/)?'&':'?').'token='.$token.
8002: '&tokenissued='.$perlvar{'lonHostID'};
8003: } else {
8004: return '/adm/notfound.html';
8005: }
8006: }
8007:
8008: # call with reqtype HEAD: get last modification time
8009: # call with reqtype GET: get the file contents
8010: # Do not call this with reqtype GET for large files! It loads everything into memory
8011: #
8012: sub getuploaded {
8013: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
8014: $uri=~s/^\///;
8015: $uri = 'http://'.&hostname(&homeserver($cnum,$cdom)).'/raw/'.$uri;
8016: my $ua=new LWP::UserAgent;
8017: my $request=new HTTP::Request($reqtype,$uri);
8018: my $response=$ua->request($request);
8019: $$rtncode = $response->code;
8020: if (! $response->is_success()) {
8021: return 'failed';
8022: }
8023: if ($reqtype eq 'HEAD') {
8024: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
8025: } elsif ($reqtype eq 'GET') {
8026: $$info = $response->content;
8027: }
8028: return 'ok';
8029: }
8030:
8031: sub readfile {
8032: my $file = shift;
8033: if ( (! -e $file ) || ($file eq '') ) { return -1; };
8034: my $fh;
8035: open($fh,"<$file");
8036: my $a='';
8037: while (my $line = <$fh>) { $a .= $line; }
8038: return $a;
8039: }
8040:
8041: sub filelocation {
8042: my ($dir,$file) = @_;
8043: my $location;
8044: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
8045:
8046: if ($file =~ m-^/adm/-) {
8047: $file=~s-^/adm/wrapper/-/-;
8048: $file=~s-^/adm/coursedocs/showdoc/-/-;
8049: }
8050:
8051: if ($file=~m:^/~:) { # is a contruction space reference
8052: $location = $file;
8053: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
8054: } elsif ($file=~m{^/home/$match_username/public_html/}) {
8055: # is a correct contruction space reference
8056: $location = $file;
8057: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
8058: my ($udom,$uname,$filename)=
8059: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
8060: my $home=&homeserver($uname,$udom);
8061: my $is_me=0;
8062: my @ids=¤t_machine_ids();
8063: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
8064: if ($is_me) {
8065: $location=&propath($udom,$uname).
8066: '/userfiles/'.$filename;
8067: } else {
8068: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
8069: $udom.'/'.$uname.'/'.$filename;
8070: }
8071: } elsif ($file =~ m-^/adm/-) {
8072: $location = $perlvar{'lonDocRoot'}.'/'.$file;
8073: } else {
8074: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
8075: $file=~s:^/res/:/:;
8076: if ( !( $file =~ m:^/:) ) {
8077: $location = $dir. '/'.$file;
8078: } else {
8079: $location = '/home/httpd/html/res'.$file;
8080: }
8081: }
8082: $location=~s://+:/:g; # remove duplicate /
8083: while ($location=~m{/\.\./}) {
8084: if ($location =~ m{/[^/]+/\.\./}) {
8085: $location=~ s{/[^/]+/\.\./}{/}g;
8086: } else {
8087: $location=~ s{/\.\./}{/}g;
8088: }
8089: } #remove dir/..
8090: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
8091: return $location;
8092: }
8093:
8094: sub hreflocation {
8095: my ($dir,$file)=@_;
8096: unless (($file=~m-^http://-i) || ($file=~m-^/-)) {
8097: $file=filelocation($dir,$file);
8098: } elsif ($file=~m-^/adm/-) {
8099: $file=~s-^/adm/wrapper/-/-;
8100: $file=~s-^/adm/coursedocs/showdoc/-/-;
8101: }
8102: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
8103: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
8104: } elsif ($file=~m-/home/($match_username)/public_html/-) {
8105: $file=~s-^/home/($match_username)/public_html/-/~$1/-;
8106: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
8107: $file=~s-^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/
8108: -/uploaded/$1/$2/-x;
8109: }
8110: if ($file=~ m{^/userfiles/}) {
8111: $file =~ s{^/userfiles/}{/uploaded/};
8112: }
8113: return $file;
8114: }
8115:
8116: sub current_machine_domains {
8117: return &machine_domains(&hostname($perlvar{'lonHostID'}));
8118: }
8119:
8120: sub machine_domains {
8121: my ($hostname) = @_;
8122: my @domains;
8123: my %hostname = &all_hostnames();
8124: while( my($id, $name) = each(%hostname)) {
8125: # &logthis("-$id-$name-$hostname-");
8126: if ($hostname eq $name) {
8127: push(@domains,&host_domain($id));
8128: }
8129: }
8130: return @domains;
8131: }
8132:
8133: sub current_machine_ids {
8134: return &machine_ids(&hostname($perlvar{'lonHostID'}));
8135: }
8136:
8137: sub machine_ids {
8138: my ($hostname) = @_;
8139: $hostname ||= &hostname($perlvar{'lonHostID'});
8140: my @ids;
8141: my %name_to_host = &all_names();
8142: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
8143: return @{ $name_to_host{$hostname} };
8144: }
8145: return;
8146: }
8147:
8148: sub additional_machine_domains {
8149: my @domains;
8150: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
8151: while( my $line = <$fh>) {
8152: $line =~ s/\s//g;
8153: push(@domains,$line);
8154: }
8155: return @domains;
8156: }
8157:
8158: sub default_login_domain {
8159: my $domain = $perlvar{'lonDefDomain'};
8160: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
8161: foreach my $posdom (¤t_machine_domains(),
8162: &additional_machine_domains()) {
8163: if (lc($posdom) eq lc($testdomain)) {
8164: $domain=$posdom;
8165: last;
8166: }
8167: }
8168: return $domain;
8169: }
8170:
8171: # ------------------------------------------------------------- Declutters URLs
8172:
8173: sub declutter {
8174: my $thisfn=shift;
8175: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
8176: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
8177: $thisfn=~s/^\///;
8178: $thisfn=~s|^adm/wrapper/||;
8179: $thisfn=~s|^adm/coursedocs/showdoc/||;
8180: $thisfn=~s/^res\///;
8181: $thisfn=~s/\?.+$//;
8182: return $thisfn;
8183: }
8184:
8185: # ------------------------------------------------------------- Clutter up URLs
8186:
8187: sub clutter {
8188: my $thisfn='/'.&declutter(shift);
8189: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
8190: || $thisfn =~ m{^/adm/(includes|pages)} ) {
8191: $thisfn='/res'.$thisfn;
8192: }
8193: if ($thisfn !~m|/adm|) {
8194: if ($thisfn =~ m|/ext/|) {
8195: $thisfn='/adm/wrapper'.$thisfn;
8196: } else {
8197: my ($ext) = ($thisfn =~ /\.(\w+)$/);
8198: my $embstyle=&Apache::loncommon::fileembstyle($ext);
8199: if ($embstyle eq 'ssi'
8200: || ($embstyle eq 'hdn')
8201: || ($embstyle eq 'rat')
8202: || ($embstyle eq 'prv')
8203: || ($embstyle eq 'ign')) {
8204: #do nothing with these
8205: } elsif (($embstyle eq 'img')
8206: || ($embstyle eq 'emb')
8207: || ($embstyle eq 'wrp')) {
8208: $thisfn='/adm/wrapper'.$thisfn;
8209: } elsif ($embstyle eq 'unk'
8210: && $thisfn!~/\.(sequence|page)$/) {
8211: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
8212: } else {
8213: # &logthis("Got a blank emb style");
8214: }
8215: }
8216: }
8217: return $thisfn;
8218: }
8219:
8220: sub clutter_with_no_wrapper {
8221: my $uri = &clutter(shift);
8222: if ($uri =~ m-^/adm/-) {
8223: $uri =~ s-^/adm/wrapper/-/-;
8224: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
8225: }
8226: return $uri;
8227: }
8228:
8229: sub freeze_escape {
8230: my ($value)=@_;
8231: if (ref($value)) {
8232: $value=&nfreeze($value);
8233: return '__FROZEN__'.&escape($value);
8234: }
8235: return &escape($value);
8236: }
8237:
8238:
8239: sub thaw_unescape {
8240: my ($value)=@_;
8241: if ($value =~ /^__FROZEN__/) {
8242: substr($value,0,10,undef);
8243: $value=&unescape($value);
8244: return &thaw($value);
8245: }
8246: return &unescape($value);
8247: }
8248:
8249: sub correct_line_ends {
8250: my ($result)=@_;
8251: $$result =~s/\r\n/\n/mg;
8252: $$result =~s/\r/\n/mg;
8253: }
8254: # ================================================================ Main Program
8255:
8256: sub goodbye {
8257: &logthis("Starting Shut down");
8258: #not converted to using infrastruture and probably shouldn't be
8259: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
8260: #converted
8261: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
8262: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
8263: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
8264: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
8265: #1.1 only
8266: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
8267: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
8268: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
8269: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
8270: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
8271: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
8272: &logthis(sprintf("%-20s is %s",'hits',$hits));
8273: &flushcourselogs();
8274: &logthis("Shutting down");
8275: }
8276:
8277: sub get_dns {
8278: my ($url,$func,$ignore_cache) = @_;
8279: if (!$ignore_cache) {
8280: my ($content,$cached)=
8281: &Apache::lonnet::is_cached_new('dns',$url);
8282: if ($cached) {
8283: &$func($content);
8284: return;
8285: }
8286: }
8287:
8288: my %alldns;
8289: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
8290: foreach my $dns (<$config>) {
8291: next if ($dns !~ /^\^(\S*)/x);
8292: $alldns{$1} = 1;
8293: }
8294: while (%alldns) {
8295: my ($dns) = keys(%alldns);
8296: delete($alldns{$dns});
8297: my $ua=new LWP::UserAgent;
8298: my $request=new HTTP::Request('GET',"http://$dns$url");
8299: my $response=$ua->request($request);
8300: next if ($response->is_error());
8301: my @content = split("\n",$response->content);
8302: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
8303: &$func(\@content);
8304: return;
8305: }
8306: close($config);
8307: my $which = (split('/',$url))[3];
8308: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
8309: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
8310: my @content = <$config>;
8311: &$func(\@content);
8312: return;
8313: }
8314: # ------------------------------------------------------------ Read domain file
8315: {
8316: my $loaded;
8317: my %domain;
8318:
8319: sub parse_domain_tab {
8320: my ($lines) = @_;
8321: foreach my $line (@$lines) {
8322: next if ($line =~ /^(\#|\s*$ )/x);
8323:
8324: chomp($line);
8325: my ($name,@elements) = split(/:/,$line,9);
8326: my %this_domain;
8327: foreach my $field ('description', 'auth_def', 'auth_arg_def',
8328: 'lang_def', 'city', 'longi', 'lati',
8329: 'primary') {
8330: $this_domain{$field} = shift(@elements);
8331: }
8332: $domain{$name} = \%this_domain;
8333: }
8334: }
8335:
8336: sub reset_domain_info {
8337: undef($loaded);
8338: undef(%domain);
8339: }
8340:
8341: sub load_domain_tab {
8342: my ($ignore_cache) = @_;
8343: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
8344: my $fh;
8345: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
8346: my @lines = <$fh>;
8347: &parse_domain_tab(\@lines);
8348: }
8349: close($fh);
8350: $loaded = 1;
8351: }
8352:
8353: sub domain {
8354: &load_domain_tab() if (!$loaded);
8355:
8356: my ($name,$what) = @_;
8357: return if ( !exists($domain{$name}) );
8358:
8359: if (!$what) {
8360: return $domain{$name}{'description'};
8361: }
8362: return $domain{$name}{$what};
8363: }
8364: }
8365:
8366:
8367: # ------------------------------------------------------------- Read hosts file
8368: {
8369: my %hostname;
8370: my %hostdom;
8371: my %libserv;
8372: my $loaded;
8373: my %name_to_host;
8374:
8375: sub parse_hosts_tab {
8376: my ($file) = @_;
8377: foreach my $configline (@$file) {
8378: next if ($configline =~ /^(\#|\s*$ )/x);
8379: next if ($configline =~ /^\^/);
8380: chomp($configline);
8381: my ($id,$domain,$role,$name)=split(/:/,$configline);
8382: $name=~s/\s//g;
8383: if ($id && $domain && $role && $name) {
8384: $hostname{$id}=$name;
8385: push(@{$name_to_host{$name}}, $id);
8386: $hostdom{$id}=$domain;
8387: if ($role eq 'library') { $libserv{$id}=$name; }
8388: }
8389: }
8390: }
8391:
8392: sub reset_hosts_info {
8393: &purge_remembered();
8394: &reset_domain_info();
8395: &reset_hosts_ip_info();
8396: undef(%name_to_host);
8397: undef(%hostname);
8398: undef(%hostdom);
8399: undef(%libserv);
8400: undef($loaded);
8401: }
8402:
8403: sub load_hosts_tab {
8404: my ($ignore_cache) = @_;
8405: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
8406: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
8407: my @config = <$config>;
8408: &parse_hosts_tab(\@config);
8409: close($config);
8410: $loaded=1;
8411: }
8412:
8413: sub hostname {
8414: &load_hosts_tab() if (!$loaded);
8415:
8416: my ($lonid) = @_;
8417: return $hostname{$lonid};
8418: }
8419:
8420: sub all_hostnames {
8421: &load_hosts_tab() if (!$loaded);
8422:
8423: return %hostname;
8424: }
8425:
8426: sub all_names {
8427: &load_hosts_tab() if (!$loaded);
8428:
8429: return %name_to_host;
8430: }
8431:
8432: sub is_library {
8433: &load_hosts_tab() if (!$loaded);
8434:
8435: return exists($libserv{$_[0]});
8436: }
8437:
8438: sub all_library {
8439: &load_hosts_tab() if (!$loaded);
8440:
8441: return %libserv;
8442: }
8443:
8444: sub get_servers {
8445: &load_hosts_tab() if (!$loaded);
8446:
8447: my ($domain,$type) = @_;
8448: my %possible_hosts = ($type eq 'library') ? %libserv
8449: : %hostname;
8450: my %result;
8451: if (ref($domain) eq 'ARRAY') {
8452: while ( my ($host,$hostname) = each(%possible_hosts)) {
8453: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
8454: $result{$host} = $hostname;
8455: }
8456: }
8457: } else {
8458: while ( my ($host,$hostname) = each(%possible_hosts)) {
8459: if ($hostdom{$host} eq $domain) {
8460: $result{$host} = $hostname;
8461: }
8462: }
8463: }
8464: return %result;
8465: }
8466:
8467: sub host_domain {
8468: &load_hosts_tab() if (!$loaded);
8469:
8470: my ($lonid) = @_;
8471: return $hostdom{$lonid};
8472: }
8473:
8474: sub all_domains {
8475: &load_hosts_tab() if (!$loaded);
8476:
8477: my %seen;
8478: my @uniq = grep(!$seen{$_}++, values(%hostdom));
8479: return @uniq;
8480: }
8481: }
8482:
8483: {
8484: my %iphost;
8485: my %name_to_ip;
8486: my %lonid_to_ip;
8487:
8488: sub get_hosts_from_ip {
8489: my ($ip) = @_;
8490: my %iphosts = &get_iphost();
8491: if (ref($iphosts{$ip})) {
8492: return @{$iphosts{$ip}};
8493: }
8494: return;
8495: }
8496:
8497: sub reset_hosts_ip_info {
8498: undef(%iphost);
8499: undef(%name_to_ip);
8500: undef(%lonid_to_ip);
8501: }
8502:
8503: sub get_host_ip {
8504: my ($lonid) = @_;
8505: if (exists($lonid_to_ip{$lonid})) {
8506: return $lonid_to_ip{$lonid};
8507: }
8508: my $name=&hostname($lonid);
8509: my $ip = gethostbyname($name);
8510: return if (!$ip || length($ip) ne 4);
8511: $ip=inet_ntoa($ip);
8512: $name_to_ip{$name} = $ip;
8513: $lonid_to_ip{$lonid} = $ip;
8514: return $ip;
8515: }
8516:
8517: sub get_iphost {
8518: my ($ignore_cache) = @_;
8519:
8520: if (!$ignore_cache) {
8521: if (%iphost) {
8522: return %iphost;
8523: }
8524: my ($ip_info,$cached)=
8525: &Apache::lonnet::is_cached_new('iphost','iphost');
8526: if ($cached) {
8527: %iphost = %{$ip_info->[0]};
8528: %name_to_ip = %{$ip_info->[1]};
8529: %lonid_to_ip = %{$ip_info->[2]};
8530: return %iphost;
8531: }
8532: }
8533:
8534: # get yesterday's info for fallback
8535: my %old_name_to_ip;
8536: my ($ip_info,$cached)=
8537: &Apache::lonnet::is_cached_new('iphost','iphost');
8538: if ($cached) {
8539: %old_name_to_ip = %{$ip_info->[1]};
8540: }
8541:
8542: my %name_to_host = &all_names();
8543: foreach my $name (keys(%name_to_host)) {
8544: my $ip;
8545: if (!exists($name_to_ip{$name})) {
8546: $ip = gethostbyname($name);
8547: if (!$ip || length($ip) ne 4) {
8548: if (defined($old_name_to_ip{$name})) {
8549: $ip = $old_name_to_ip{$name};
8550: &logthis("Can't find $name defaulting to old $ip");
8551: } else {
8552: &logthis("Name $name no IP found");
8553: next;
8554: }
8555: } else {
8556: $ip=inet_ntoa($ip);
8557: }
8558: $name_to_ip{$name} = $ip;
8559: } else {
8560: $ip = $name_to_ip{$name};
8561: }
8562: foreach my $id (@{ $name_to_host{$name} }) {
8563: $lonid_to_ip{$id} = $ip;
8564: }
8565: push(@{$iphost{$ip}},@{$name_to_host{$name}});
8566: }
8567: &Apache::lonnet::do_cache_new('iphost','iphost',
8568: [\%iphost,\%name_to_ip,\%lonid_to_ip],
8569: 48*60*60);
8570:
8571: return %iphost;
8572: }
8573: }
8574:
8575: BEGIN {
8576:
8577: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
8578: unless ($readit) {
8579: {
8580: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
8581: %perlvar = (%perlvar,%{$configvars});
8582: }
8583:
8584:
8585: # ------------------------------------------------------ Read spare server file
8586: {
8587: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
8588:
8589: while (my $configline=<$config>) {
8590: chomp($configline);
8591: if ($configline) {
8592: my ($host,$type) = split(':',$configline,2);
8593: if (!defined($type) || $type eq '') { $type = 'default' };
8594: push(@{ $spareid{$type} }, $host);
8595: }
8596: }
8597: close($config);
8598: }
8599: # ------------------------------------------------------------ Read permissions
8600: {
8601: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
8602:
8603: while (my $configline=<$config>) {
8604: chomp($configline);
8605: if ($configline) {
8606: my ($role,$perm)=split(/ /,$configline);
8607: if ($perm ne '') { $pr{$role}=$perm; }
8608: }
8609: }
8610: close($config);
8611: }
8612:
8613: # -------------------------------------------- Read plain texts for permissions
8614: {
8615: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
8616:
8617: while (my $configline=<$config>) {
8618: chomp($configline);
8619: if ($configline) {
8620: my ($short,@plain)=split(/:/,$configline);
8621: %{$prp{$short}} = ();
8622: if (@plain > 0) {
8623: $prp{$short}{'std'} = $plain[0];
8624: for (my $i=1; $i<@plain; $i++) {
8625: $prp{$short}{'alt'.$i} = $plain[$i];
8626: }
8627: }
8628: }
8629: }
8630: close($config);
8631: }
8632:
8633: # ---------------------------------------------------------- Read package table
8634: {
8635: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
8636:
8637: while (my $configline=<$config>) {
8638: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
8639: chomp($configline);
8640: my ($short,$plain)=split(/:/,$configline);
8641: my ($pack,$name)=split(/\&/,$short);
8642: if ($plain ne '') {
8643: $packagetab{$pack.'&'.$name.'&name'}=$name;
8644: $packagetab{$short}=$plain;
8645: }
8646: }
8647: close($config);
8648: }
8649:
8650: # ------------- set up temporary directory
8651: {
8652: $tmpdir = $perlvar{'lonDaemons'}.'/tmp/';
8653:
8654: }
8655:
8656: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
8657: 'compress_threshold'=> 20_000,
8658: });
8659:
8660: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
8661: $dumpcount=0;
8662:
8663: &logtouch();
8664: &logthis('<font color="yellow">INFO: Read configuration</font>');
8665: $readit=1;
8666: {
8667: use integer;
8668: my $test=(2**32)+1;
8669: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
8670: &logthis(" Detected 64bit platform ($_64bit)");
8671: }
8672: }
8673: }
8674:
8675: 1;
8676: __END__
8677:
8678: =pod
8679:
8680: =head1 NAME
8681:
8682: Apache::lonnet - Subroutines to ask questions about things in the network.
8683:
8684: =head1 SYNOPSIS
8685:
8686: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
8687:
8688: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
8689:
8690: Common parameters:
8691:
8692: =over 4
8693:
8694: =item *
8695:
8696: $uname : an internal username (if $cname expecting a course Id specifically)
8697:
8698: =item *
8699:
8700: $udom : a domain (if $cdom expecting a course's domain specifically)
8701:
8702: =item *
8703:
8704: $symb : a resource instance identifier
8705:
8706: =item *
8707:
8708: $namespace : the name of a .db file that contains the data needed or
8709: being set.
8710:
8711: =back
8712:
8713: =head1 OVERVIEW
8714:
8715: lonnet provides subroutines which interact with the
8716: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
8717: about classes, users, and resources.
8718:
8719: For many of these objects you can also use this to store data about
8720: them or modify them in various ways.
8721:
8722: =head2 Symbs
8723:
8724: To identify a specific instance of a resource, LON-CAPA uses symbols
8725: or "symbs"X<symb>. These identifiers are built from the URL of the
8726: map, the resource number of the resource in the map, and the URL of
8727: the resource itself. The latter is somewhat redundant, but might help
8728: if maps change.
8729:
8730: An example is
8731:
8732: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
8733:
8734: The respective map entry is
8735:
8736: <resource id="19" src="/res/msu/korte/tests/part12.problem"
8737: title="Problem 2">
8738: </resource>
8739:
8740: Symbs are used by the random number generator, as well as to store and
8741: restore data specific to a certain instance of for example a problem.
8742:
8743: =head2 Storing And Retrieving Data
8744:
8745: X<store()>X<cstore()>X<restore()>Three of the most important functions
8746: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
8747: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
8748: is is the non-critical message twin of cstore. These functions are for
8749: handlers to store a perl hash to a user's permanent data space in an
8750: easy manner, and to retrieve it again on another call. It is expected
8751: that a handler would use this once at the beginning to retrieve data,
8752: and then again once at the end to send only the new data back.
8753:
8754: The data is stored in the user's data directory on the user's
8755: homeserver under the ID of the course.
8756:
8757: The hash that is returned by restore will have all of the previous
8758: value for all of the elements of the hash.
8759:
8760: Example:
8761:
8762: #creating a hash
8763: my %hash;
8764: $hash{'foo'}='bar';
8765:
8766: #storing it
8767: &Apache::lonnet::cstore(\%hash);
8768:
8769: #changing a value
8770: $hash{'foo'}='notbar';
8771:
8772: #adding a new value
8773: $hash{'bar'}='foo';
8774: &Apache::lonnet::cstore(\%hash);
8775:
8776: #retrieving the hash
8777: my %history=&Apache::lonnet::restore();
8778:
8779: #print the hash
8780: foreach my $key (sort(keys(%history))) {
8781: print("\%history{$key} = $history{$key}");
8782: }
8783:
8784: Will print out:
8785:
8786: %history{1:foo} = bar
8787: %history{1:keys} = foo:timestamp
8788: %history{1:timestamp} = 990455579
8789: %history{2:bar} = foo
8790: %history{2:foo} = notbar
8791: %history{2:keys} = foo:bar:timestamp
8792: %history{2:timestamp} = 990455580
8793: %history{bar} = foo
8794: %history{foo} = notbar
8795: %history{timestamp} = 990455580
8796: %history{version} = 2
8797:
8798: Note that the special hash entries C<keys>, C<version> and
8799: C<timestamp> were added to the hash. C<version> will be equal to the
8800: total number of versions of the data that have been stored. The
8801: C<timestamp> attribute will be the UNIX time the hash was
8802: stored. C<keys> is available in every historical section to list which
8803: keys were added or changed at a specific historical revision of a
8804: hash.
8805:
8806: B<Warning>: do not store the hash that restore returns directly. This
8807: will cause a mess since it will restore the historical keys as if the
8808: were new keys. I.E. 1:foo will become 1:1:foo etc.
8809:
8810: Calling convention:
8811:
8812: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
8813: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
8814:
8815: For more detailed information, see lonnet specific documentation.
8816:
8817: =head1 RETURN MESSAGES
8818:
8819: =over 4
8820:
8821: =item * B<con_lost>: unable to contact remote host
8822:
8823: =item * B<con_delayed>: unable to contact remote host, message will be delivered
8824: when the connection is brought back up
8825:
8826: =item * B<con_failed>: unable to contact remote host and unable to save message
8827: for later delivery
8828:
8829: =item * B<error:>: an error a occured, a description of the error follows the :
8830:
8831: =item * B<no_such_host>: unable to fund a host associated with the user/domain
8832: that was requested
8833:
8834: =back
8835:
8836: =head1 PUBLIC SUBROUTINES
8837:
8838: =head2 Session Environment Functions
8839:
8840: =over 4
8841:
8842: =item *
8843: X<appenv()>
8844: B<appenv(%hash)>: the value of %hash is written to
8845: the user envirnoment file, and will be restored for each access this
8846: user makes during this session, also modifies the %env for the current
8847: process
8848:
8849: =item *
8850: X<delenv()>
8851: B<delenv($regexp)>: removes all items from the session
8852: environment file that matches the regular expression in $regexp. The
8853: values are also delted from the current processes %env.
8854:
8855: =item * get_env_multiple($name)
8856:
8857: gets $name from the %env hash, it seemlessly handles the cases where multiple
8858: values may be defined and end up as an array ref.
8859:
8860: returns an array of values
8861:
8862: =back
8863:
8864: =head2 User Information
8865:
8866: =over 4
8867:
8868: =item *
8869: X<queryauthenticate()>
8870: B<queryauthenticate($uname,$udom)>: try to determine user's current
8871: authentication scheme
8872:
8873: =item *
8874: X<authenticate()>
8875: B<authenticate($uname,$upass,$udom)>: try to
8876: authenticate user from domain's lib servers (first use the current
8877: one). C<$upass> should be the users password.
8878:
8879: =item *
8880: X<homeserver()>
8881: B<homeserver($uname,$udom)>: find the server which has
8882: the user's directory and files (there must be only one), this caches
8883: the answer, and also caches if there is a borken connection.
8884:
8885: =item *
8886: X<idget()>
8887: B<idget($udom,@ids)>: find the usernames behind a list of IDs
8888: (IDs are a unique resource in a domain, there must be only 1 ID per
8889: username, and only 1 username per ID in a specific domain) (returns
8890: hash: id=>name,id=>name)
8891:
8892: =item *
8893: X<idrget()>
8894: B<idrget($udom,@unames)>: find the IDs behind a list of
8895: usernames (returns hash: name=>id,name=>id)
8896:
8897: =item *
8898: X<idput()>
8899: B<idput($udom,%ids)>: store away a list of names and associated IDs
8900:
8901: =item *
8902: X<rolesinit()>
8903: B<rolesinit($udom,$username,$authhost)>: get user privileges
8904:
8905: =item *
8906: X<getsection()>
8907: B<getsection($udom,$uname,$cname)>: finds the section of student in the
8908: course $cname, return section name/number or '' for "not in course"
8909: and '-1' for "no section"
8910:
8911: =item *
8912: X<userenvironment()>
8913: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
8914: passed in @what from the requested user's environment, returns a hash
8915:
8916: =item *
8917: X<userlog_query()>
8918: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
8919: activity.log file. %filters defines filters applied when parsing the
8920: log file. These can be start or end timestamps, or the type of action
8921: - log to look for Login or Logout events, check for Checkin or
8922: Checkout, role for role selection. The response is in the form
8923: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
8924: escaped strings of the action recorded in the activity.log file.
8925:
8926: =back
8927:
8928: =head2 User Roles
8929:
8930: =over 4
8931:
8932: =item *
8933:
8934: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
8935: F: full access
8936: U,I,K: authentication modes (cxx only)
8937: '': forbidden
8938: 1: user needs to choose course
8939: 2: browse allowed
8940: A: passphrase authentication needed
8941:
8942: =item *
8943:
8944: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
8945: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
8946: and course level
8947:
8948: =item *
8949:
8950: plaintext($short) : return value in %prp hash (rolesplain.tab); plain text
8951: explanation of a user role term
8952:
8953: =item *
8954:
8955: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
8956: All arguments are optional. Returns a hash of a roles, either for
8957: co-author/assistant author roles for a user's Construction Space
8958: (default), or if $context is 'userroles', roles for the user himself,
8959: In the hash, keys are set to colon-separated $uname,$udom,$role, and
8960: (optionally) if $withsec is true, a fourth colon-separated item - $section.
8961: For each key, value is set to colon-separated start and end times for
8962: the role. If no username and domain are specified, will default to
8963: current user/domain. Types, roles, and roledoms are references to arrays
8964: of role statuses (active, future or previous), roles
8965: (e.g., cc,in, st etc.) and domains of the roles which can be used
8966: to restrict the list of roles reported. If no array ref is
8967: provided for types, will default to return only active roles.
8968:
8969: =back
8970:
8971: =head2 User Modification
8972:
8973: =over 4
8974:
8975: =item *
8976:
8977: assignrole($udom,$uname,$url,$role,$end,$start) : assign role; give a role to a
8978: user for the level given by URL. Optional start and end dates (leave empty
8979: string or zero for "no date")
8980:
8981: =item *
8982:
8983: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
8984: change a users, password, possible return values are: ok,
8985: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
8986: refused
8987:
8988: =item *
8989:
8990: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
8991:
8992: =item *
8993:
8994: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene) :
8995: modify user
8996:
8997: =item *
8998:
8999: modifystudent
9000:
9001: modify a students enrollment and identification information.
9002: The course id is resolved based on the current users environment.
9003: This means the envoking user must be a course coordinator or otherwise
9004: associated with a course.
9005:
9006: This call is essentially a wrapper for lonnet::modifyuser and
9007: lonnet::modify_student_enrollment
9008:
9009: Inputs:
9010:
9011: =over 4
9012:
9013: =item B<$udom> Students loncapa domain
9014:
9015: =item B<$uname> Students loncapa login name
9016:
9017: =item B<$uid> Students id/student number
9018:
9019: =item B<$umode> Students authentication mode
9020:
9021: =item B<$upass> Students password
9022:
9023: =item B<$first> Students first name
9024:
9025: =item B<$middle> Students middle name
9026:
9027: =item B<$last> Students last name
9028:
9029: =item B<$gene> Students generation
9030:
9031: =item B<$usec> Students section in course
9032:
9033: =item B<$end> Unix time of the roles expiration
9034:
9035: =item B<$start> Unix time of the roles start date
9036:
9037: =item B<$forceid> If defined, allow $uid to be changed
9038:
9039: =item B<$desiredhome> server to use as home server for student
9040:
9041: =back
9042:
9043: =item *
9044:
9045: modify_student_enrollment
9046:
9047: Change a students enrollment status in a class. The environment variable
9048: 'role.request.course' must be defined for this function to proceed.
9049:
9050: Inputs:
9051:
9052: =over 4
9053:
9054: =item $udom, students domain
9055:
9056: =item $uname, students name
9057:
9058: =item $uid, students user id
9059:
9060: =item $first, students first name
9061:
9062: =item $middle
9063:
9064: =item $last
9065:
9066: =item $gene
9067:
9068: =item $usec
9069:
9070: =item $end
9071:
9072: =item $start
9073:
9074: =back
9075:
9076:
9077: =item *
9078:
9079: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
9080: custom role; give a custom role to a user for the level given by URL. Specify
9081: name and domain of role author, and role name
9082:
9083: =item *
9084:
9085: revokerole($udom,$uname,$url,$role) : revoke a role for url
9086:
9087: =item *
9088:
9089: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
9090:
9091: =back
9092:
9093: =head2 Course Infomation
9094:
9095: =over 4
9096:
9097: =item *
9098:
9099: coursedescription($courseid) : returns a hash of information about the
9100: specified course id, including all environment settings for the
9101: course, the description of the course will be in the hash under the
9102: key 'description'
9103:
9104: =item *
9105:
9106: resdata($name,$domain,$type,@which) : request for current parameter
9107: setting for a specific $type, where $type is either 'course' or 'user',
9108: @what should be a list of parameters to ask about. This routine caches
9109: answers for 5 minutes.
9110:
9111: =item *
9112:
9113: get_courseresdata($courseid, $domain) : dump the entire course resource
9114: data base, returning a hash that is keyed by the resource name and has
9115: values that are the resource value. I believe that the timestamps and
9116: versions are also returned.
9117:
9118:
9119: =back
9120:
9121: =head2 Course Modification
9122:
9123: =over 4
9124:
9125: =item *
9126:
9127: writecoursepref($courseid,%prefs) : write preferences (environment
9128: database) for a course
9129:
9130: =item *
9131:
9132: createcourse($udom,$description,$url) : make/modify course
9133:
9134: =back
9135:
9136: =head2 Resource Subroutines
9137:
9138: =over 4
9139:
9140: =item *
9141:
9142: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
9143:
9144: =item *
9145:
9146: repcopy($filename) : subscribes to the requested file, and attempts to
9147: replicate from the owning library server, Might return
9148: 'unavailable', 'not_found', 'forbidden', 'ok', or
9149: 'bad_request', also attempts to grab the metadata for the
9150: resource. Expects the local filesystem pathname
9151: (/home/httpd/html/res/....)
9152:
9153: =back
9154:
9155: =head2 Resource Information
9156:
9157: =over 4
9158:
9159: =item *
9160:
9161: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
9162: a vairety of different possible values, $varname should be a request
9163: string, and the other parameters can be used to specify who and what
9164: one is asking about.
9165:
9166: Possible values for $varname are environment.lastname (or other item
9167: from the envirnment hash), user.name (or someother aspect about the
9168: user), resource.0.maxtries (or some other part and parameter of a
9169: resource)
9170:
9171: =item *
9172:
9173: directcondval($number) : get current value of a condition; reads from a state
9174: string
9175:
9176: =item *
9177:
9178: condval($condidx) : value of condition index based on state
9179:
9180: =item *
9181:
9182: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
9183: resource's metadata, $what should be either a specific key, or either
9184: 'keys' (to get a list of possible keys) or 'packages' to get a list of
9185: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
9186:
9187: this function automatically caches all requests
9188:
9189: =item *
9190:
9191: metadata_query($query,$custom,$customshow) : make a metadata query against the
9192: network of library servers; returns file handle of where SQL and regex results
9193: will be stored for query
9194:
9195: =item *
9196:
9197: symbread($filename) : return symbolic list entry (filename argument optional);
9198: returns the data handle
9199:
9200: =item *
9201:
9202: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
9203: a possible symb for the URL in $thisfn, and if is an encryypted
9204: resource that the user accessed using /enc/ returns a 1 on success, 0
9205: on failure, user must be in a course, as it assumes the existance of
9206: the course initial hash, and uses $env('request.course.id'}
9207:
9208:
9209: =item *
9210:
9211: symbclean($symb) : removes versions numbers from a symb, returns the
9212: cleaned symb
9213:
9214: =item *
9215:
9216: is_on_map($uri) : checks if the $uri is somewhere on the current
9217: course map, user must be in a course for it to work.
9218:
9219: =item *
9220:
9221: numval($salt) : return random seed value (addend for rndseed)
9222:
9223: =item *
9224:
9225: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
9226: a random seed, all arguments are optional, if they aren't sent it uses the
9227: environment to derive them. Note: if symb isn't sent and it can't get one
9228: from &symbread it will use the current time as its return value
9229:
9230: =item *
9231:
9232: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
9233: unfakeable, receipt
9234:
9235: =item *
9236:
9237: receipt() : API to ireceipt working off of env values; given out to users
9238:
9239: =item *
9240:
9241: countacc($url) : count the number of accesses to a given URL
9242:
9243: =item *
9244:
9245: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
9246:
9247: =item *
9248:
9249: checkin($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 $tcrsid)
9250:
9251: =item *
9252:
9253: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
9254:
9255: =item *
9256:
9257: devalidate($symb) : devalidate temporary spreadsheet calculations,
9258: forcing spreadsheet to reevaluate the resource scores next time.
9259:
9260: =back
9261:
9262: =head2 Storing/Retreiving Data
9263:
9264: =over 4
9265:
9266: =item *
9267:
9268: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
9269: for this url; hashref needs to be given and should be a \%hashname; the
9270: remaining args aren't required and if they aren't passed or are '' they will
9271: be derived from the env
9272:
9273: =item *
9274:
9275: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
9276: uses critical subroutine
9277:
9278: =item *
9279:
9280: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
9281: all args are optional
9282:
9283: =item *
9284:
9285: dumpstore($namespace,$udom,$uname,$regexp,$range) :
9286: dumps the complete (or key matching regexp) namespace into a hash
9287: ($udom, $uname, $regexp, $range are optional) for a namespace that is
9288: normally &store()ed into
9289:
9290: $range should be either an integer '100' (give me the first 100
9291: matching records)
9292: or be two integers sperated by a - with no spaces
9293: '30-50' (give me the 30th through the 50th matching
9294: records)
9295:
9296:
9297: =item *
9298:
9299: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
9300: replaces a &store() version of data with a replacement set of data
9301: for a particular resource in a namespace passed in the $storehash hash
9302: reference
9303:
9304: =item *
9305:
9306: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
9307: works very similar to store/cstore, but all data is stored in a
9308: temporary location and can be reset using tmpreset, $storehash should
9309: be a hash reference, returns nothing on success
9310:
9311: =item *
9312:
9313: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
9314: similar to restore, but all data is stored in a temporary location and
9315: can be reset using tmpreset. Returns a hash of values on success,
9316: error string otherwise.
9317:
9318: =item *
9319:
9320: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
9321: deltes all keys for $symb form the temporary storage hash.
9322:
9323: =item *
9324:
9325: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
9326: reference filled in from namesp ($udom and $uname are optional)
9327:
9328: =item *
9329:
9330: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
9331: namesp ($udom and $uname are optional)
9332:
9333: =item *
9334:
9335: dump($namespace,$udom,$uname,$regexp,$range) :
9336: dumps the complete (or key matching regexp) namespace into a hash
9337: ($udom, $uname, $regexp, $range are optional)
9338:
9339: $range should be either an integer '100' (give me the first 100
9340: matching records)
9341: or be two integers sperated by a - with no spaces
9342: '30-50' (give me the 30th through the 50th matching
9343: records)
9344: =item *
9345:
9346: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
9347: $store can be a scalar, an array reference, or if the amount to be
9348: incremented is > 1, a hash reference.
9349:
9350: ($udom and $uname are optional)
9351:
9352: =item *
9353:
9354: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
9355: ($udom and $uname are optional)
9356:
9357: =item *
9358:
9359: cput($namespace,$storehash,$udom,$uname) : critical put
9360: ($udom and $uname are optional)
9361:
9362: =item *
9363:
9364: newput($namespace,$storehash,$udom,$uname) :
9365:
9366: Attempts to store the items in the $storehash, but only if they don't
9367: currently exist, if this succeeds you can be certain that you have
9368: successfully created a new key value pair in the $namespace db.
9369:
9370:
9371: Args:
9372: $namespace: name of database to store values to
9373: $storehash: hashref to store to the db
9374: $udom: (optional) domain of user containing the db
9375: $uname: (optional) name of user caontaining the db
9376:
9377: Returns:
9378: 'ok' -> succeeded in storing all keys of $storehash
9379: 'key_exists: <key>' -> failed to anything out of $storehash, as at
9380: least <key> already existed in the db (other
9381: requested keys may also already exist)
9382: 'error: <msg>' -> unable to tie the DB or other erorr occured
9383: 'con_lost' -> unable to contact request server
9384: 'refused' -> action was not allowed by remote machine
9385:
9386:
9387: =item *
9388:
9389: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
9390: reference filled in from namesp (encrypts the return communication)
9391: ($udom and $uname are optional)
9392:
9393: =item *
9394:
9395: log($udom,$name,$home,$message) : write to permanent log for user; use
9396: critical subroutine
9397:
9398: =item *
9399:
9400: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
9401: array reference filled in from namespace found in domain level on either
9402: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
9403:
9404: =item *
9405:
9406: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
9407: domain level either on specified domain server ($uhome) or primary domain
9408: server ($udom and $uhome are optional)
9409:
9410: =item *
9411:
9412: get_domain_defaults($target_domain) : returns hash with defaults for
9413: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
9414: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
9415: or localauth), initial password or a kerberos realm, language (e.g., en-us).
9416: Values are retrieved from cache (if current), or from domain's configuration.db
9417: (if available), or lastly from values in lonTabs/dns_domain,tab,
9418: or lonTabs/domain.tab.
9419:
9420: %domdefaults = &get_auth_defaults($target_domain);
9421:
9422: =back
9423:
9424: =head2 Network Status Functions
9425:
9426: =over 4
9427:
9428: =item *
9429:
9430: dirlist($uri) : return directory list based on URI
9431:
9432: =item *
9433:
9434: spareserver() : find server with least workload from spare.tab
9435:
9436: =back
9437:
9438: =head2 Apache Request
9439:
9440: =over 4
9441:
9442: =item *
9443:
9444: ssi($url,%hash) : server side include, does a complete request cycle on url to
9445: localhost, posts hash
9446:
9447: =back
9448:
9449: =head2 Data to String to Data
9450:
9451: =over 4
9452:
9453: =item *
9454:
9455: hash2str(%hash) : convert a hash into a string complete with escaping and '='
9456: and '&' separators, supports elements that are arrayrefs and hashrefs
9457:
9458: =item *
9459:
9460: hashref2str($hashref) : convert a hashref into a string complete with
9461: escaping and '=' and '&' separators, supports elements that are
9462: arrayrefs and hashrefs
9463:
9464: =item *
9465:
9466: arrayref2str($arrayref) : convert an arrayref into a string complete
9467: with escaping and '&' separators, supports elements that are arrayrefs
9468: and hashrefs
9469:
9470: =item *
9471:
9472: str2hash($string) : convert string to hash using unescaping and
9473: splitting on '=' and '&', supports elements that are arrayrefs and
9474: hashrefs
9475:
9476: =item *
9477:
9478: str2array($string) : convert string to hash using unescaping and
9479: splitting on '&', supports elements that are arrayrefs and hashrefs
9480:
9481: =back
9482:
9483: =head2 Logging Routines
9484:
9485: =over 4
9486:
9487: These routines allow one to make log messages in the lonnet.log and
9488: lonnet.perm logfiles.
9489:
9490: =item *
9491:
9492: logtouch() : make sure the logfile, lonnet.log, exists
9493:
9494: =item *
9495:
9496: logthis() : append message to the normal lonnet.log file, it gets
9497: preiodically rolled over and deleted.
9498:
9499: =item *
9500:
9501: logperm() : append a permanent message to lonnet.perm.log, this log
9502: file never gets deleted by any automated portion of the system, only
9503: messages of critical importance should go in here.
9504:
9505: =back
9506:
9507: =head2 General File Helper Routines
9508:
9509: =over 4
9510:
9511: =item *
9512:
9513: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
9514: (a) files in /uploaded
9515: (i) If a local copy of the file exists -
9516: compares modification date of local copy with last-modified date for
9517: definitive version stored on home server for course. If local copy is
9518: stale, requests a new version from the home server and stores it.
9519: If the original has been removed from the home server, then local copy
9520: is unlinked.
9521: (ii) If local copy does not exist -
9522: requests the file from the home server and stores it.
9523:
9524: If $caller is 'uploadrep':
9525: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
9526: for request for files originally uploaded via DOCS.
9527: - returns 'ok' if fresh local copy now available, -1 otherwise.
9528:
9529: Otherwise:
9530: This indicates a call from the content generation phase of the request.
9531: - returns the entire contents of the file or -1.
9532:
9533: (b) files in /res
9534: - returns the entire contents of a file or -1;
9535: it properly subscribes to and replicates the file if neccessary.
9536:
9537:
9538: =item *
9539:
9540: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
9541: reference
9542:
9543: returns either a stat() list of data about the file or an empty list
9544: if the file doesn't exist or couldn't find out about it (connection
9545: problems or user unknown)
9546:
9547: =item *
9548:
9549: filelocation($dir,$file) : returns file system location of a file
9550: based on URI; meant to be "fairly clean" absolute reference, $dir is a
9551: directory that relative $file lookups are to looked in ($dir of /a/dir
9552: and a file of ../bob will become /a/bob)
9553:
9554: =item *
9555:
9556: hreflocation($dir,$file) : returns file system location or a URL; same as
9557: filelocation except for hrefs
9558:
9559: =item *
9560:
9561: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
9562:
9563: =back
9564:
9565: =head2 Usererfile file routines (/uploaded*)
9566:
9567: =over 4
9568:
9569: =item *
9570:
9571: userfileupload(): main rotine for putting a file in a user or course's
9572: filespace, arguments are,
9573:
9574: formname - required - this is the name of the element in $env where the
9575: filename, and the contents of the file to create/modifed exist
9576: the filename is in $env{'form.'.$formname.'.filename'} and the
9577: contents of the file is located in $env{'form.'.$formname}
9578: coursedoc - if true, store the file in the course of the active role
9579: of the current user
9580: subdir - required - subdirectory to put the file in under ../userfiles/
9581: if undefined, it will be placed in "unknown"
9582:
9583: (This routine calls clean_filename() to remove any dangerous
9584: characters from the filename, and then calls finuserfileupload() to
9585: complete the transaction)
9586:
9587: returns either the url of the uploaded file (/uploaded/....) if successful
9588: and /adm/notfound.html if unsuccessful
9589:
9590: =item *
9591:
9592: clean_filename(): routine for cleaing a filename up for storage in
9593: userfile space, argument is:
9594:
9595: filename - proposed filename
9596:
9597: returns: the new clean filename
9598:
9599: =item *
9600:
9601: finishuserfileupload(): routine that creaes and sends the file to
9602: userspace, probably shouldn't be called directly
9603:
9604: docuname: username or courseid of destination for the file
9605: docudom: domain of user/course of destination for the file
9606: formname: same as for userfileupload()
9607: fname: filename (inculding subdirectories) for the file
9608:
9609: returns either the url of the uploaded file (/uploaded/....) if successful
9610: and /adm/notfound.html if unsuccessful
9611:
9612: =item *
9613:
9614: renameuserfile(): renames an existing userfile to a new name
9615:
9616: Args:
9617: docuname: username or courseid of destination for the file
9618: docudom: domain of user/course of destination for the file
9619: old: current file name (including any subdirs under userfiles)
9620: new: desired file name (including any subdirs under userfiles)
9621:
9622: =item *
9623:
9624: mkdiruserfile(): creates a directory is a userfiles dir
9625:
9626: Args:
9627: docuname: username or courseid of destination for the file
9628: docudom: domain of user/course of destination for the file
9629: dir: dir to create (including any subdirs under userfiles)
9630:
9631: =item *
9632:
9633: removeuserfile(): removes a file that exists in userfiles
9634:
9635: Args:
9636: docuname: username or courseid of destination for the file
9637: docudom: domain of user/course of destination for the file
9638: fname: filname to delete (including any subdirs under userfiles)
9639:
9640: =item *
9641:
9642: removeuploadedurl(): convience function for removeuserfile()
9643:
9644: Args:
9645: url: a full /uploaded/... url to delete
9646:
9647: =item *
9648:
9649: get_portfile_permissions():
9650: Args:
9651: domain: domain of user or course contain the portfolio files
9652: user: name of user or num of course contain the portfolio files
9653: Returns:
9654: hashref of a dump of the proper file_permissions.db
9655:
9656:
9657: =item *
9658:
9659: get_access_controls():
9660:
9661: Args:
9662: current_permissions: the hash ref returned from get_portfile_permissions()
9663: group: (optional) the group you want the files associated with
9664: file: (optional) the file you want access info on
9665:
9666: Returns:
9667: a hash (keys are file names) of hashes containing
9668: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
9669: values are XML containing access control settings (see below)
9670:
9671: Internal notes:
9672:
9673: access controls are stored in file_permissions.db as key=value pairs.
9674: key -> path to file/file_name\0uniqueID:scope_end_start
9675: where scope -> public,guest,course,group,domains or users.
9676: end -> UNIX time for end of access (0 -> no end date)
9677: start -> UNIX time for start of access
9678:
9679: value -> XML description of access control
9680: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
9681: <start></start>
9682: <end></end>
9683:
9684: <password></password> for scope type = guest
9685:
9686: <domain></domain> for scope type = course or group
9687: <number></number>
9688: <roles id="">
9689: <role></role>
9690: <access></access>
9691: <section></section>
9692: <group></group>
9693: </roles>
9694:
9695: <dom></dom> for scope type = domains
9696:
9697: <users> for scope type = users
9698: <user>
9699: <uname></uname>
9700: <udom></udom>
9701: </user>
9702: </users>
9703: </scope>
9704:
9705: Access data is also aggregated for each file in an additional key=value pair:
9706: key -> path to file/file_name\0accesscontrol
9707: value -> reference to hash
9708: hash contains key = value pairs
9709: where key = uniqueID:scope_end_start
9710: value = UNIX time record was last updated
9711:
9712: Used to improve speed of look-ups of access controls for each file.
9713:
9714: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
9715:
9716: modify_access_controls():
9717:
9718: Modifies access controls for a portfolio file
9719: Args
9720: 1. file name
9721: 2. reference to hash of required changes,
9722: 3. domain
9723: 4. username
9724: where domain,username are the domain of the portfolio owner
9725: (either a user or a course)
9726:
9727: Returns:
9728: 1. result of additions or updates ('ok' or 'error', with error message).
9729: 2. result of deletions ('ok' or 'error', with error message).
9730: 3. reference to hash of any new or updated access controls.
9731: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
9732: key = integer (inbound ID)
9733: value = uniqueID
9734:
9735: =back
9736:
9737: =head2 HTTP Helper Routines
9738:
9739: =over 4
9740:
9741: =item *
9742:
9743: escape() : unpack non-word characters into CGI-compatible hex codes
9744:
9745: =item *
9746:
9747: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
9748:
9749: =back
9750:
9751: =head1 PRIVATE SUBROUTINES
9752:
9753: =head2 Underlying communication routines (Shouldn't call)
9754:
9755: =over 4
9756:
9757: =item *
9758:
9759: subreply() : tries to pass a message to lonc, returns con_lost if incapable
9760:
9761: =item *
9762:
9763: reply() : uses subreply to send a message to remote machine, logs all failures
9764:
9765: =item *
9766:
9767: critical() : passes a critical message to another server; if cannot
9768: get through then place message in connection buffer directory and
9769: returns con_delayed, if incapable of saving message, returns
9770: con_failed
9771:
9772: =item *
9773:
9774: reconlonc() : tries to reconnect lonc client processes.
9775:
9776: =back
9777:
9778: =head2 Resource Access Logging
9779:
9780: =over 4
9781:
9782: =item *
9783:
9784: flushcourselogs() : flush (save) buffer logs and access logs
9785:
9786: =item *
9787:
9788: courselog($what) : save message for course in hash
9789:
9790: =item *
9791:
9792: courseacclog($what) : save message for course using &courselog(). Perform
9793: special processing for specific resource types (problems, exams, quizzes, etc).
9794:
9795: =item *
9796:
9797: goodbye() : flush course logs and log shutting down; it is called in srm.conf
9798: as a PerlChildExitHandler
9799:
9800: =back
9801:
9802: =head2 Other
9803:
9804: =over 4
9805:
9806: =item *
9807:
9808: symblist($mapname,%newhash) : update symbolic storage links
9809:
9810: =back
9811:
9812: =cut
9813:
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to lonnet.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / lonnet / perl