1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.960 2008/06/06 04:53:51 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: package Apache::lonnet;
31:
32: use strict;
33: use LWP::UserAgent();
34: use HTTP::Date;
35: # use Date::Parse;
36: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
37: $_64bit %env);
38:
39: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
40: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
41: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
42: %courseownerbuf, %coursetypebuf,$locknum);
43:
44: use IO::Socket;
45: use GDBM_File;
46: use HTML::LCParser;
47: use Fcntl qw(:flock);
48: use Storable qw(thaw nfreeze);
49: use Time::HiRes qw( gettimeofday tv_interval );
50: use Cache::Memcached;
51: use Digest::MD5;
52: use Math::Random;
53: use LONCAPA qw(:DEFAULT :match);
54: use LONCAPA::Configuration;
55:
56: my $readit;
57: my $max_connection_retries = 10; # Or some such value.
58:
59: require Exporter;
60:
61: our @ISA = qw (Exporter);
62: our @EXPORT = qw(%env);
63:
64: =pod
65:
66: =head1 Package Variables
67:
68: These are largely undocumented, so if you decipher one please note it here.
69:
70: =over 4
71:
72: =item $processmarker
73:
74: Contains the time this process was started and this servers host id.
75:
76: =item $dumpcount
77:
78: Counts the number of times a message log flush has been attempted (regardless
79: of success) by this process. Used as part of the filename when messages are
80: delayed.
81:
82: =back
83:
84: =cut
85:
86:
87: # --------------------------------------------------------------------- Logging
88: {
89: my $logid;
90: sub instructor_log {
91: my ($hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
92: if (($cnum eq '') || ($cdom eq '')) {
93: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
94: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
95: }
96: $logid++;
97: my $now = time();
98: my $id=$now.'00000'.$$.'00000'.$logid;
99: return &Apache::lonnet::put('nohist_'.$hash_name,
100: { $id => {
101: 'exe_uname' => $env{'user.name'},
102: 'exe_udom' => $env{'user.domain'},
103: 'exe_time' => $now,
104: 'exe_ip' => $ENV{'REMOTE_ADDR'},
105: 'delflag' => $delflag,
106: 'logentry' => $storehash,
107: 'uname' => $uname,
108: 'udom' => $udom,
109: }
110: },$cdom,$cnum);
111: }
112: }
113:
114: sub logtouch {
115: my $execdir=$perlvar{'lonDaemons'};
116: unless (-e "$execdir/logs/lonnet.log") {
117: open(my $fh,">>$execdir/logs/lonnet.log");
118: close $fh;
119: }
120: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
121: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
122: }
123:
124: sub logthis {
125: my $message=shift;
126: my $execdir=$perlvar{'lonDaemons'};
127: my $now=time;
128: my $local=localtime($now);
129: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
130: print $fh "$local ($$): $message\n";
131: close($fh);
132: }
133: return 1;
134: }
135:
136: sub logperm {
137: my $message=shift;
138: my $execdir=$perlvar{'lonDaemons'};
139: my $now=time;
140: my $local=localtime($now);
141: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
142: print $fh "$now:$message:$local\n";
143: close($fh);
144: }
145: return 1;
146: }
147:
148: sub create_connection {
149: my ($hostname,$lonid) = @_;
150: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
151: Type => SOCK_STREAM,
152: Timeout => 10);
153: return 0 if (!$client);
154: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
155: my $result = <$client>;
156: chomp($result);
157: return 1 if ($result eq 'done');
158: return 0;
159: }
160:
161:
162: # -------------------------------------------------- Non-critical communication
163: sub subreply {
164: my ($cmd,$server)=@_;
165: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
166: #
167: # With loncnew process trimming, there's a timing hole between lonc server
168: # process exit and the master server picking up the listen on the AF_UNIX
169: # socket. In that time interval, a lock file will exist:
170:
171: my $lockfile=$peerfile.".lock";
172: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
173: sleep(1);
174: }
175: # At this point, either a loncnew parent is listening or an old lonc
176: # or loncnew child is listening so we can connect or everything's dead.
177: #
178: # We'll give the connection a few tries before abandoning it. If
179: # connection is not possible, we'll con_lost back to the client.
180: #
181: my $client;
182: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
183: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
184: Type => SOCK_STREAM,
185: Timeout => 10);
186: if ($client) {
187: last; # Connected!
188: } else {
189: &create_connection(&hostname($server),$server);
190: }
191: sleep(1); # Try again later if failed connection.
192: }
193: my $answer;
194: if ($client) {
195: print $client "sethost:$server:$cmd\n";
196: $answer=<$client>;
197: if (!$answer) { $answer="con_lost"; }
198: chomp($answer);
199: } else {
200: $answer = 'con_lost'; # Failed connection.
201: }
202: return $answer;
203: }
204:
205: sub reply {
206: my ($cmd,$server)=@_;
207: unless (defined(&hostname($server))) { return 'no_such_host'; }
208: my $answer=subreply($cmd,$server);
209: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
210: &logthis("<font color=\"blue\">WARNING:".
211: " $cmd to $server returned $answer</font>");
212: }
213: return $answer;
214: }
215:
216: # ----------------------------------------------------------- Send USR1 to lonc
217:
218: sub reconlonc {
219: my ($lonid) = @_;
220: my $hostname = &hostname($lonid);
221: if ($lonid) {
222: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
223: if ($hostname && -e $peerfile) {
224: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
225: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
226: Type => SOCK_STREAM,
227: Timeout => 10);
228: if ($client) {
229: print $client ("reset_retries\n");
230: my $answer=<$client>;
231: #reset just this one.
232: }
233: }
234: return;
235: }
236:
237: &logthis("Trying to reconnect lonc");
238: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
239: if (open(my $fh,"<$loncfile")) {
240: my $loncpid=<$fh>;
241: chomp($loncpid);
242: if (kill 0 => $loncpid) {
243: &logthis("lonc at pid $loncpid responding, sending USR1");
244: kill USR1 => $loncpid;
245: sleep 1;
246: } else {
247: &logthis(
248: "<font color=\"blue\">WARNING:".
249: " lonc at pid $loncpid not responding, giving up</font>");
250: }
251: } else {
252: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
253: }
254: }
255:
256: # ------------------------------------------------------ Critical communication
257:
258: sub critical {
259: my ($cmd,$server)=@_;
260: unless (&hostname($server)) {
261: &logthis("<font color=\"blue\">WARNING:".
262: " Critical message to unknown server ($server)</font>");
263: return 'no_such_host';
264: }
265: my $answer=reply($cmd,$server);
266: if ($answer eq 'con_lost') {
267: &reconlonc("$perlvar{'lonSockDir'}/$server");
268: my $answer=reply($cmd,$server);
269: if ($answer eq 'con_lost') {
270: my $now=time;
271: my $middlename=$cmd;
272: $middlename=substr($middlename,0,16);
273: $middlename=~s/\W//g;
274: my $dfilename=
275: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
276: $dumpcount++;
277: {
278: my $dfh;
279: if (open($dfh,">$dfilename")) {
280: print $dfh "$cmd\n";
281: close($dfh);
282: }
283: }
284: sleep 2;
285: my $wcmd='';
286: {
287: my $dfh;
288: if (open($dfh,"<$dfilename")) {
289: $wcmd=<$dfh>;
290: close($dfh);
291: }
292: }
293: chomp($wcmd);
294: if ($wcmd eq $cmd) {
295: &logthis("<font color=\"blue\">WARNING: ".
296: "Connection buffer $dfilename: $cmd</font>");
297: &logperm("D:$server:$cmd");
298: return 'con_delayed';
299: } else {
300: &logthis("<font color=\"red\">CRITICAL:"
301: ." Critical connection failed: $server $cmd</font>");
302: &logperm("F:$server:$cmd");
303: return 'con_failed';
304: }
305: }
306: }
307: return $answer;
308: }
309:
310: # ------------------------------------------- check if return value is an error
311:
312: sub error {
313: my ($result) = @_;
314: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
315: if ($2 == 2) { return undef; }
316: return $1;
317: }
318: return undef;
319: }
320:
321: sub convert_and_load_session_env {
322: my ($lonidsdir,$handle)=@_;
323: my @profile;
324: {
325: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
326: if (!$opened) {
327: return 0;
328: }
329: flock($idf,LOCK_SH);
330: @profile=<$idf>;
331: close($idf);
332: }
333: my %temp_env;
334: foreach my $line (@profile) {
335: if ($line !~ m/=/) {
336: return 0;
337: }
338: chomp($line);
339: my ($envname,$envvalue)=split(/=/,$line,2);
340: $temp_env{&unescape($envname)} = &unescape($envvalue);
341: }
342: unlink("$lonidsdir/$handle.id");
343: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
344: 0640)) {
345: %disk_env = %temp_env;
346: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
347: untie(%disk_env);
348: }
349: return 1;
350: }
351:
352: # ------------------------------------------- Transfer profile into environment
353: my $env_loaded;
354: sub transfer_profile_to_env {
355: my ($lonidsdir,$handle,$force_transfer) = @_;
356: if (!$force_transfer && $env_loaded) { return; }
357:
358: if (!defined($lonidsdir)) {
359: $lonidsdir = $perlvar{'lonIDsDir'};
360: }
361: if (!defined($handle)) {
362: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
363: }
364:
365: my $convert;
366: {
367: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
368: if (!$opened) {
369: return;
370: }
371: flock($idf,LOCK_SH);
372: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
373: &GDBM_READER(),0640)) {
374: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
375: untie(%disk_env);
376: } else {
377: $convert = 1;
378: }
379: }
380: if ($convert) {
381: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
382: &logthis("Failed to load session, or convert session.");
383: }
384: }
385:
386: my %remove;
387: while ( my $envname = each(%env) ) {
388: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
389: if ($time < time-300) {
390: $remove{$key}++;
391: }
392: }
393: }
394:
395: $env{'user.environment'} = "$lonidsdir/$handle.id";
396: $env_loaded=1;
397: foreach my $expired_key (keys(%remove)) {
398: &delenv($expired_key);
399: }
400: }
401:
402: # ---------------------------------------------------- Check for valid session
403: sub check_for_valid_session {
404: my ($r) = @_;
405: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
406: my $lonid=$cookies{'lonID'};
407: return undef if (!$lonid);
408:
409: my $handle=&LONCAPA::clean_handle($lonid->value);
410: my $lonidsdir=$r->dir_config('lonIDsDir');
411: return undef if (!-e "$lonidsdir/$handle.id");
412:
413: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
414: return undef if (!$opened);
415:
416: flock($idf,LOCK_SH);
417: my %disk_env;
418: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
419: &GDBM_READER(),0640)) {
420: return undef;
421: }
422:
423: if (!defined($disk_env{'user.name'})
424: || !defined($disk_env{'user.domain'})) {
425: return undef;
426: }
427: return $handle;
428: }
429:
430: sub timed_flock {
431: my ($file,$lock_type) = @_;
432: my $failed=0;
433: eval {
434: local $SIG{__DIE__}='DEFAULT';
435: local $SIG{ALRM}=sub {
436: $failed=1;
437: die("failed lock");
438: };
439: alarm(13);
440: flock($file,$lock_type);
441: alarm(0);
442: };
443: if ($failed) {
444: return undef;
445: } else {
446: return 1;
447: }
448: }
449:
450: # ---------------------------------------------------------- Append Environment
451:
452: sub appenv {
453: my ($newenv,$roles) = @_;
454: if (ref($newenv) eq 'HASH') {
455: foreach my $key (keys(%{$newenv})) {
456: my $refused = 0;
457: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
458: $refused = 1;
459: if (ref($roles) eq 'ARRAY') {
460: my ($type,$role) = ($key =~ /^user\.(role|priv)\.([^.]+)\./);
461: if (grep(/^\Q$role\E$/,@{$roles})) {
462: $refused = 0;
463: }
464: }
465: }
466: if ($refused) {
467: &logthis("<font color=\"blue\">WARNING: ".
468: "Attempt to modify environment ".$key." to ".$newenv->{$key}
469: .'</font>');
470: delete($newenv->{$key});
471: } else {
472: $env{$key}=$newenv->{$key};
473: }
474: }
475: my $opened = open(my $env_file,'+<',$env{'user.environment'});
476: if ($opened
477: && &timed_flock($env_file,LOCK_EX)
478: &&
479: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
480: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
481: while (my ($key,$value) = each(%{$newenv})) {
482: $disk_env{$key} = $value;
483: }
484: untie(%disk_env);
485: }
486: }
487: return 'ok';
488: }
489: # ----------------------------------------------------- Delete from Environment
490:
491: sub delenv {
492: my $delthis=shift;
493: if (($delthis=~/user\.role/) || ($delthis=~/user\.priv/)) {
494: &logthis("<font color=\"blue\">WARNING: ".
495: "Attempt to delete from environment ".$delthis);
496: return 'error';
497: }
498: my $opened = open(my $env_file,'+<',$env{'user.environment'});
499: if ($opened
500: && &timed_flock($env_file,LOCK_EX)
501: &&
502: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
503: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
504: foreach my $key (keys(%disk_env)) {
505: if ($key=~/^$delthis/) {
506: delete($env{$key});
507: delete($disk_env{$key});
508: }
509: }
510: untie(%disk_env);
511: }
512: return 'ok';
513: }
514:
515: sub get_env_multiple {
516: my ($name) = @_;
517: my @values;
518: if (defined($env{$name})) {
519: # exists is it an array
520: if (ref($env{$name})) {
521: @values=@{ $env{$name} };
522: } else {
523: $values[0]=$env{$name};
524: }
525: }
526: return(@values);
527: }
528:
529: # ------------------------------------------------------------------- Locking
530:
531: sub set_lock {
532: my ($text)=@_;
533: $locknum++;
534: my $id=$$.'-'.$locknum;
535: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
536: 'session.lock.'.$id => $text});
537: return $id;
538: }
539:
540: sub get_locks {
541: my $num=0;
542: my %texts=();
543: foreach my $lock (split(/\,/,$env{'session.locks'})) {
544: if ($lock=~/\w/) {
545: $num++;
546: $texts{$lock}=$env{'session.lock.'.$lock};
547: }
548: }
549: return ($num,%texts);
550: }
551:
552: sub remove_lock {
553: my ($id)=@_;
554: my $newlocks='';
555: foreach my $lock (split(/\,/,$env{'session.locks'})) {
556: if (($lock=~/\w/) && ($lock ne $id)) {
557: $newlocks.=','.$lock;
558: }
559: }
560: &appenv({'session.locks' => $newlocks});
561: &delenv('session.lock.'.$id);
562: }
563:
564: sub remove_all_locks {
565: my $activelocks=$env{'session.locks'};
566: foreach my $lock (split(/\,/,$env{'session.locks'})) {
567: if ($lock=~/\w/) {
568: &remove_lock($lock);
569: }
570: }
571: }
572:
573:
574: # ------------------------------------------ Find out current server userload
575: sub userload {
576: my $numusers=0;
577: {
578: opendir(LONIDS,$perlvar{'lonIDsDir'});
579: my $filename;
580: my $curtime=time;
581: while ($filename=readdir(LONIDS)) {
582: next if ($filename eq '.' || $filename eq '..');
583: next if ($filename =~ /publicuser_\d+\.id/);
584: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
585: if ($curtime-$mtime < 1800) { $numusers++; }
586: }
587: closedir(LONIDS);
588: }
589: my $userloadpercent=0;
590: my $maxuserload=$perlvar{'lonUserLoadLim'};
591: if ($maxuserload) {
592: $userloadpercent=100*$numusers/$maxuserload;
593: }
594: $userloadpercent=sprintf("%.2f",$userloadpercent);
595: return $userloadpercent;
596: }
597:
598: # ------------------------------------------ Fight off request when overloaded
599:
600: sub overloaderror {
601: my ($r,$checkserver)=@_;
602: unless ($checkserver) { $checkserver=$perlvar{'lonHostID'}; }
603: my $loadavg;
604: if ($checkserver eq $perlvar{'lonHostID'}) {
605: open(my $loadfile,'/proc/loadavg');
606: $loadavg=<$loadfile>;
607: $loadavg =~ s/\s.*//g;
608: $loadavg = 100*$loadavg/$perlvar{'lonLoadLim'};
609: close($loadfile);
610: } else {
611: $loadavg=&reply('load',$checkserver);
612: }
613: my $overload=$loadavg-100;
614: if ($overload>0) {
615: $r->err_headers_out->{'Retry-After'}=$overload;
616: $r->log_error('Overload of '.$overload.' on '.$checkserver);
617: return 413;
618: }
619: return '';
620: }
621:
622: # ------------------------------ Find server with least workload from spare.tab
623:
624: sub spareserver {
625: my ($loadpercent,$userloadpercent,$want_server_name) = @_;
626: my $spare_server;
627: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
628: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
629: : $userloadpercent;
630:
631: foreach my $try_server (@{ $spareid{'primary'} }) {
632: ($spare_server, $lowest_load) =
633: &compare_server_load($try_server, $spare_server, $lowest_load);
634: }
635:
636: my $found_server = ($spare_server ne '' && $lowest_load < 100);
637:
638: if (!$found_server) {
639: foreach my $try_server (@{ $spareid{'default'} }) {
640: ($spare_server, $lowest_load) =
641: &compare_server_load($try_server, $spare_server, $lowest_load);
642: }
643: }
644:
645: if (!$want_server_name) {
646: $spare_server="http://".&hostname($spare_server);
647: }
648: return $spare_server;
649: }
650:
651: sub compare_server_load {
652: my ($try_server, $spare_server, $lowest_load) = @_;
653:
654: my $loadans = &reply('load', $try_server);
655: my $userloadans = &reply('userload',$try_server);
656:
657: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
658: next; #didn't get a number from the server
659: }
660:
661: my $load;
662: if ($loadans =~ /\d/) {
663: if ($userloadans =~ /\d/) {
664: #both are numbers, pick the bigger one
665: $load = ($loadans > $userloadans) ? $loadans
666: : $userloadans;
667: } else {
668: $load = $loadans;
669: }
670: } else {
671: $load = $userloadans;
672: }
673:
674: if (($load =~ /\d/) && ($load < $lowest_load)) {
675: $spare_server = $try_server;
676: $lowest_load = $load;
677: }
678: return ($spare_server,$lowest_load);
679: }
680:
681: # --------------------------- ask offload servers if user already has a session
682: sub find_existing_session {
683: my ($udom,$uname) = @_;
684: foreach my $try_server (@{ $spareid{'primary'} },
685: @{ $spareid{'default'} }) {
686: return $try_server if (&has_user_session($try_server, $udom, $uname));
687: }
688: return;
689: }
690:
691: # -------------------------------- ask if server already has a session for user
692: sub has_user_session {
693: my ($lonid,$udom,$uname) = @_;
694: my $result = &reply(join(':','userhassession',
695: map {&escape($_)} ($udom,$uname)),$lonid);
696: return 1 if ($result eq 'ok');
697:
698: return 0;
699: }
700:
701: # --------------------------------------------- Try to change a user's password
702:
703: sub changepass {
704: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
705: $currentpass = &escape($currentpass);
706: $newpass = &escape($newpass);
707: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context",
708: $server);
709: if (! $answer) {
710: &logthis("No reply on password change request to $server ".
711: "by $uname in domain $udom.");
712: } elsif ($answer =~ "^ok") {
713: &logthis("$uname in $udom successfully changed their password ".
714: "on $server.");
715: } elsif ($answer =~ "^pwchange_failure") {
716: &logthis("$uname in $udom was unable to change their password ".
717: "on $server. The action was blocked by either lcpasswd ".
718: "or pwchange");
719: } elsif ($answer =~ "^non_authorized") {
720: &logthis("$uname in $udom did not get their password correct when ".
721: "attempting to change it on $server.");
722: } elsif ($answer =~ "^auth_mode_error") {
723: &logthis("$uname in $udom attempted to change their password despite ".
724: "not being locally or internally authenticated on $server.");
725: } elsif ($answer =~ "^unknown_user") {
726: &logthis("$uname in $udom attempted to change their password ".
727: "on $server but were unable to because $server is not ".
728: "their home server.");
729: } elsif ($answer =~ "^refused") {
730: &logthis("$server refused to change $uname in $udom password because ".
731: "it was sent an unencrypted request to change the password.");
732: }
733: return $answer;
734: }
735:
736: # ----------------------- Try to determine user's current authentication scheme
737:
738: sub queryauthenticate {
739: my ($uname,$udom)=@_;
740: my $uhome=&homeserver($uname,$udom);
741: if (!$uhome) {
742: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
743: return 'no_host';
744: }
745: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
746: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
747: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
748: }
749: return $answer;
750: }
751:
752: # --------- Try to authenticate user from domain's lib servers (first this one)
753:
754: sub authenticate {
755: my ($uname,$upass,$udom,$checkdefauth)=@_;
756: $upass=&escape($upass);
757: $uname= &LONCAPA::clean_username($uname);
758: my $uhome=&homeserver($uname,$udom,1);
759: my $newhome;
760: if ((!$uhome) || ($uhome eq 'no_host')) {
761: # Maybe the machine was offline and only re-appeared again recently?
762: &reconlonc();
763: # One more
764: $uhome=&homeserver($uname,$udom,1);
765: if (($uhome eq 'no_host') && $checkdefauth) {
766: if (defined(&domain($udom,'primary'))) {
767: $newhome=&domain($udom,'primary');
768: }
769: if ($newhome ne '') {
770: $uhome = $newhome;
771: }
772: }
773: if ((!$uhome) || ($uhome eq 'no_host')) {
774: &logthis("User $uname at $udom is unknown in authenticate");
775: return 'no_host';
776: }
777: }
778: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth",$uhome);
779: if ($answer eq 'authorized') {
780: if ($newhome) {
781: &logthis("User $uname at $udom authorized by $uhome, but needs account");
782: return 'no_account_on_host';
783: } else {
784: &logthis("User $uname at $udom authorized by $uhome");
785: return $uhome;
786: }
787: }
788: if ($answer eq 'non_authorized') {
789: &logthis("User $uname at $udom rejected by $uhome");
790: return 'no_host';
791: }
792: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
793: return 'no_host';
794: }
795:
796: # ---------------------- Find the homebase for a user from domain's lib servers
797:
798: my %homecache;
799: sub homeserver {
800: my ($uname,$udom,$ignoreBadCache)=@_;
801: my $index="$uname:$udom";
802:
803: if (exists($homecache{$index})) { return $homecache{$index}; }
804:
805: my %servers = &get_servers($udom,'library');
806: foreach my $tryserver (keys(%servers)) {
807: next if ($ignoreBadCache ne 'true' &&
808: exists($badServerCache{$tryserver}));
809:
810: my $answer=reply("home:$udom:$uname",$tryserver);
811: if ($answer eq 'found') {
812: delete($badServerCache{$tryserver});
813: return $homecache{$index}=$tryserver;
814: } elsif ($answer eq 'no_host') {
815: $badServerCache{$tryserver}=1;
816: }
817: }
818: return 'no_host';
819: }
820:
821: # ------------------------------------- Find the usernames behind a list of IDs
822:
823: sub idget {
824: my ($udom,@ids)=@_;
825: my %returnhash=();
826:
827: my %servers = &get_servers($udom,'library');
828: foreach my $tryserver (keys(%servers)) {
829: my $idlist=join('&',@ids);
830: $idlist=~tr/A-Z/a-z/;
831: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
832: my @answer=();
833: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
834: @answer=split(/\&/,$reply);
835: } ;
836: my $i;
837: for ($i=0;$i<=$#ids;$i++) {
838: if ($answer[$i]) {
839: $returnhash{$ids[$i]}=$answer[$i];
840: }
841: }
842: }
843: return %returnhash;
844: }
845:
846: # ------------------------------------- Find the IDs behind a list of usernames
847:
848: sub idrget {
849: my ($udom,@unames)=@_;
850: my %returnhash=();
851: foreach my $uname (@unames) {
852: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
853: }
854: return %returnhash;
855: }
856:
857: # ------------------------------- Store away a list of names and associated IDs
858:
859: sub idput {
860: my ($udom,%ids)=@_;
861: my %servers=();
862: foreach my $uname (keys(%ids)) {
863: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
864: my $uhom=&homeserver($uname,$udom);
865: if ($uhom ne 'no_host') {
866: my $id=&escape($ids{$uname});
867: $id=~tr/A-Z/a-z/;
868: my $esc_unam=&escape($uname);
869: if ($servers{$uhom}) {
870: $servers{$uhom}.='&'.$id.'='.$esc_unam;
871: } else {
872: $servers{$uhom}=$id.'='.$esc_unam;
873: }
874: }
875: }
876: foreach my $server (keys(%servers)) {
877: &critical('idput:'.$udom.':'.$servers{$server},$server);
878: }
879: }
880:
881: # ------------------------------------------- get items from domain db files
882:
883: sub get_dom {
884: my ($namespace,$storearr,$udom,$uhome)=@_;
885: my $items='';
886: foreach my $item (@$storearr) {
887: $items.=&escape($item).'&';
888: }
889: $items=~s/\&$//;
890: if (!$udom) {
891: $udom=$env{'user.domain'};
892: if (defined(&domain($udom,'primary'))) {
893: $uhome=&domain($udom,'primary');
894: } else {
895: undef($uhome);
896: }
897: } else {
898: if (!$uhome) {
899: if (defined(&domain($udom,'primary'))) {
900: $uhome=&domain($udom,'primary');
901: }
902: }
903: }
904: if ($udom && $uhome && ($uhome ne 'no_host')) {
905: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
906: my %returnhash;
907: if ($rep eq '' || $rep =~ /^error: 2 /) {
908: return %returnhash;
909: }
910: my @pairs=split(/\&/,$rep);
911: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
912: return @pairs;
913: }
914: my $i=0;
915: foreach my $item (@$storearr) {
916: $returnhash{$item}=&thaw_unescape($pairs[$i]);
917: $i++;
918: }
919: return %returnhash;
920: } else {
921: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
922: }
923: }
924:
925: # -------------------------------------------- put items in domain db files
926:
927: sub put_dom {
928: my ($namespace,$storehash,$udom,$uhome)=@_;
929: if (!$udom) {
930: $udom=$env{'user.domain'};
931: if (defined(&domain($udom,'primary'))) {
932: $uhome=&domain($udom,'primary');
933: } else {
934: undef($uhome);
935: }
936: } else {
937: if (!$uhome) {
938: if (defined(&domain($udom,'primary'))) {
939: $uhome=&domain($udom,'primary');
940: }
941: }
942: }
943: if ($udom && $uhome && ($uhome ne 'no_host')) {
944: my $items='';
945: foreach my $item (keys(%$storehash)) {
946: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
947: }
948: $items=~s/\&$//;
949: return &reply("putdom:$udom:$namespace:$items",$uhome);
950: } else {
951: &logthis("put_dom failed - no homeserver and/or domain");
952: }
953: }
954:
955: sub retrieve_inst_usertypes {
956: my ($udom) = @_;
957: my (%returnhash,@order);
958: if (defined(&domain($udom,'primary'))) {
959: my $uhome=&domain($udom,'primary');
960: my $rep=&reply("inst_usertypes:$udom",$uhome);
961: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
962: &logthis("get_dom failed - $rep returned from $uhome in domain: $udom");
963: return (\%returnhash,\@order);
964: }
965: my ($hashitems,$orderitems) = split(/:/,$rep);
966: my @pairs=split(/\&/,$hashitems);
967: foreach my $item (@pairs) {
968: my ($key,$value)=split(/=/,$item,2);
969: $key = &unescape($key);
970: next if ($key =~ /^error: 2 /);
971: $returnhash{$key}=&thaw_unescape($value);
972: }
973: my @esc_order = split(/\&/,$orderitems);
974: foreach my $item (@esc_order) {
975: push(@order,&unescape($item));
976: }
977: } else {
978: &logthis("get_dom failed - no primary domain server for $udom");
979: }
980: return (\%returnhash,\@order);
981: }
982:
983: sub is_domainimage {
984: my ($url) = @_;
985: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
986: if (&domain($1) ne '') {
987: return '1';
988: }
989: }
990: return;
991: }
992:
993: sub inst_directory_query {
994: my ($srch) = @_;
995: my $udom = $srch->{'srchdomain'};
996: my %results;
997: my $homeserver = &domain($udom,'primary');
998: my $outcome;
999: if ($homeserver ne '') {
1000: my $queryid=&reply("querysend:instdirsearch:".
1001: &escape($srch->{'srchby'}).':'.
1002: &escape($srch->{'srchterm'}).':'.
1003: &escape($srch->{'srchtype'}),$homeserver);
1004: my $host=&hostname($homeserver);
1005: if ($queryid !~/^\Q$host\E\_/) {
1006: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1007: return;
1008: }
1009: my $response = &get_query_reply($queryid);
1010: my $maxtries = 5;
1011: my $tries = 1;
1012: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1013: $response = &get_query_reply($queryid);
1014: $tries ++;
1015: }
1016:
1017: if (!&error($response) && $response ne 'refused') {
1018: if ($response eq 'unavailable') {
1019: $outcome = $response;
1020: } else {
1021: $outcome = 'ok';
1022: my @matches = split(/\n/,$response);
1023: foreach my $match (@matches) {
1024: my ($key,$value) = split(/=/,$match);
1025: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1026: }
1027: }
1028: }
1029: }
1030: return ($outcome,%results);
1031: }
1032:
1033: sub usersearch {
1034: my ($srch) = @_;
1035: my $dom = $srch->{'srchdomain'};
1036: my %results;
1037: my %libserv = &all_library();
1038: my $query = 'usersearch';
1039: foreach my $tryserver (keys(%libserv)) {
1040: if (&host_domain($tryserver) eq $dom) {
1041: my $host=&hostname($tryserver);
1042: my $queryid=
1043: &reply("querysend:".&escape($query).':'.
1044: &escape($srch->{'srchby'}).':'.
1045: &escape($srch->{'srchtype'}).':'.
1046: &escape($srch->{'srchterm'}),$tryserver);
1047: if ($queryid !~/^\Q$host\E\_/) {
1048: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1049: next;
1050: }
1051: my $reply = &get_query_reply($queryid);
1052: my $maxtries = 1;
1053: my $tries = 1;
1054: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1055: $reply = &get_query_reply($queryid);
1056: $tries ++;
1057: }
1058: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1059: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1060: } else {
1061: my @matches;
1062: if ($reply =~ /\n/) {
1063: @matches = split(/\n/,$reply);
1064: } else {
1065: @matches = split(/\&/,$reply);
1066: }
1067: foreach my $match (@matches) {
1068: my ($uname,$udom,%userhash);
1069: foreach my $entry (split(/:/,$match)) {
1070: my ($key,$value) =
1071: map {&unescape($_);} split(/=/,$entry);
1072: $userhash{$key} = $value;
1073: if ($key eq 'username') {
1074: $uname = $value;
1075: } elsif ($key eq 'domain') {
1076: $udom = $value;
1077: }
1078: }
1079: $results{$uname.':'.$udom} = \%userhash;
1080: }
1081: }
1082: }
1083: }
1084: return %results;
1085: }
1086:
1087: sub get_instuser {
1088: my ($udom,$uname,$id) = @_;
1089: my $homeserver = &domain($udom,'primary');
1090: my ($outcome,%results);
1091: if ($homeserver ne '') {
1092: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1093: &escape($id).':'.&escape($udom),$homeserver);
1094: my $host=&hostname($homeserver);
1095: if ($queryid !~/^\Q$host\E\_/) {
1096: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1097: return;
1098: }
1099: my $response = &get_query_reply($queryid);
1100: my $maxtries = 5;
1101: my $tries = 1;
1102: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1103: $response = &get_query_reply($queryid);
1104: $tries ++;
1105: }
1106: if (!&error($response) && $response ne 'refused') {
1107: if ($response eq 'unavailable') {
1108: $outcome = $response;
1109: } else {
1110: $outcome = 'ok';
1111: my @matches = split(/\n/,$response);
1112: foreach my $match (@matches) {
1113: my ($key,$value) = split(/=/,$match);
1114: $results{&unescape($key)} = &thaw_unescape($value);
1115: }
1116: }
1117: }
1118: }
1119: my %userinfo;
1120: if (ref($results{$uname}) eq 'HASH') {
1121: %userinfo = %{$results{$uname}};
1122: }
1123: return ($outcome,%userinfo);
1124: }
1125:
1126: sub inst_rulecheck {
1127: my ($udom,$uname,$id,$item,$rules) = @_;
1128: my %returnhash;
1129: if ($udom ne '') {
1130: if (ref($rules) eq 'ARRAY') {
1131: @{$rules} = map {&escape($_);} (@{$rules});
1132: my $rulestr = join(':',@{$rules});
1133: my $homeserver=&domain($udom,'primary');
1134: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1135: my $response;
1136: if ($item eq 'username') {
1137: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1138: ':'.&escape($uname).':'.$rulestr,
1139: $homeserver));
1140: } elsif ($item eq 'id') {
1141: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1142: ':'.&escape($id).':'.$rulestr,
1143: $homeserver));
1144: } elsif ($item eq 'selfcreate') {
1145: $response=&unescape(&reply('instselfcreatecheck:'.
1146: &escape($udom).':'.&escape($uname).
1147: ':'.$rulestr,$homeserver));
1148: }
1149: if ($response ne 'refused') {
1150: my @pairs=split(/\&/,$response);
1151: foreach my $item (@pairs) {
1152: my ($key,$value)=split(/=/,$item,2);
1153: $key = &unescape($key);
1154: next if ($key =~ /^error: 2 /);
1155: $returnhash{$key}=&thaw_unescape($value);
1156: }
1157: }
1158: }
1159: }
1160: }
1161: return %returnhash;
1162: }
1163:
1164: sub inst_userrules {
1165: my ($udom,$check) = @_;
1166: my (%ruleshash,@ruleorder);
1167: if ($udom ne '') {
1168: my $homeserver=&domain($udom,'primary');
1169: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1170: my $response;
1171: if ($check eq 'id') {
1172: $response=&reply('instidrules:'.&escape($udom),
1173: $homeserver);
1174: } elsif ($check eq 'email') {
1175: $response=&reply('instemailrules:'.&escape($udom),
1176: $homeserver);
1177: } else {
1178: $response=&reply('instuserrules:'.&escape($udom),
1179: $homeserver);
1180: }
1181: if (($response ne 'refused') && ($response ne 'error') &&
1182: ($response ne 'unknown_cmd') &&
1183: ($response ne 'no_such_host')) {
1184: my ($hashitems,$orderitems) = split(/:/,$response);
1185: my @pairs=split(/\&/,$hashitems);
1186: foreach my $item (@pairs) {
1187: my ($key,$value)=split(/=/,$item,2);
1188: $key = &unescape($key);
1189: next if ($key =~ /^error: 2 /);
1190: $ruleshash{$key}=&thaw_unescape($value);
1191: }
1192: my @esc_order = split(/\&/,$orderitems);
1193: foreach my $item (@esc_order) {
1194: push(@ruleorder,&unescape($item));
1195: }
1196: }
1197: }
1198: }
1199: return (\%ruleshash,\@ruleorder);
1200: }
1201:
1202: # ------------------------- Get Authentication and Language Defaults for Domain
1203:
1204: sub get_domain_defaults {
1205: my ($domain) = @_;
1206: my $cachetime = 60*60*24;
1207: my ($defauthtype,$defautharg,$deflang);
1208: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1209: if (defined($cached)) {
1210: if (ref($result) eq 'HASH') {
1211: return %{$result};
1212: }
1213: }
1214: my %domdefaults;
1215: my %domconfig =
1216: &Apache::lonnet::get_dom('configuration',['defaults'],$domain);
1217: if (ref($domconfig{'defaults'}) eq 'HASH') {
1218: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
1219: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
1220: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
1221: } else {
1222: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
1223: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
1224: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
1225: }
1226: &Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,
1227: $cachetime);
1228: return %domdefaults;
1229: }
1230:
1231: # --------------------------------------------------- Assign a key to a student
1232:
1233: sub assign_access_key {
1234: #
1235: # a valid key looks like uname:udom#comments
1236: # comments are being appended
1237: #
1238: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
1239: $kdom=
1240: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
1241: $knum=
1242: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
1243: $cdom=
1244: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1245: $cnum=
1246: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1247: $udom=$env{'user.name'} unless (defined($udom));
1248: $uname=$env{'user.domain'} unless (defined($uname));
1249: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
1250: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
1251: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
1252: # assigned to this person
1253: # - this should not happen,
1254: # unless something went wrong
1255: # the first time around
1256: # ready to assign
1257: $logentry=$1.'; '.$logentry;
1258: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
1259: $kdom,$knum) eq 'ok') {
1260: # key now belongs to user
1261: my $envkey='key.'.$cdom.'_'.$cnum;
1262: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
1263: &appenv({'environment.'.$envkey => $ckey});
1264: return 'ok';
1265: } else {
1266: return
1267: 'error: Count not permanently assign key, will need to be re-entered later.';
1268: }
1269: } else {
1270: return 'error: Could not assign key, try again later.';
1271: }
1272: } elsif (!$existing{$ckey}) {
1273: # the key does not exist
1274: return 'error: The key does not exist';
1275: } else {
1276: # the key is somebody else's
1277: return 'error: The key is already in use';
1278: }
1279: }
1280:
1281: # ------------------------------------------ put an additional comment on a key
1282:
1283: sub comment_access_key {
1284: #
1285: # a valid key looks like uname:udom#comments
1286: # comments are being appended
1287: #
1288: my ($ckey,$cdom,$cnum,$logentry)=@_;
1289: $cdom=
1290: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1291: $cnum=
1292: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1293: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1294: if ($existing{$ckey}) {
1295: $existing{$ckey}.='; '.$logentry;
1296: # ready to assign
1297: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
1298: $cdom,$cnum) eq 'ok') {
1299: return 'ok';
1300: } else {
1301: return 'error: Count not store comment.';
1302: }
1303: } else {
1304: # the key does not exist
1305: return 'error: The key does not exist';
1306: }
1307: }
1308:
1309: # ------------------------------------------------------ Generate a set of keys
1310:
1311: sub generate_access_keys {
1312: my ($number,$cdom,$cnum,$logentry)=@_;
1313: $cdom=
1314: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1315: $cnum=
1316: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1317: unless (&allowed('mky',$cdom)) { return 0; }
1318: unless (($cdom) && ($cnum)) { return 0; }
1319: if ($number>10000) { return 0; }
1320: sleep(2); # make sure don't get same seed twice
1321: srand(time()^($$+($$<<15))); # from "Programming Perl"
1322: my $total=0;
1323: for (my $i=1;$i<=$number;$i++) {
1324: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
1325: sprintf("%lx",int(100000*rand)).'-'.
1326: sprintf("%lx",int(100000*rand));
1327: $newkey=~s/1/g/g; # folks mix up 1 and l
1328: $newkey=~s/0/h/g; # and also 0 and O
1329: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
1330: if ($existing{$newkey}) {
1331: $i--;
1332: } else {
1333: if (&put('accesskeys',
1334: { $newkey => '# generated '.localtime().
1335: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
1336: '; '.$logentry },
1337: $cdom,$cnum) eq 'ok') {
1338: $total++;
1339: }
1340: }
1341: }
1342: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
1343: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
1344: return $total;
1345: }
1346:
1347: # ------------------------------------------------------- Validate an accesskey
1348:
1349: sub validate_access_key {
1350: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
1351: $cdom=
1352: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1353: $cnum=
1354: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1355: $udom=$env{'user.domain'} unless (defined($udom));
1356: $uname=$env{'user.name'} unless (defined($uname));
1357: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1358: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
1359: }
1360:
1361: # ------------------------------------- Find the section of student in a course
1362: sub devalidate_getsection_cache {
1363: my ($udom,$unam,$courseid)=@_;
1364: my $hashid="$udom:$unam:$courseid";
1365: &devalidate_cache_new('getsection',$hashid);
1366: }
1367:
1368: sub courseid_to_courseurl {
1369: my ($courseid) = @_;
1370: #already url style courseid
1371: return $courseid if ($courseid =~ m{^/});
1372:
1373: if (exists($env{'course.'.$courseid.'.num'})) {
1374: my $cnum = $env{'course.'.$courseid.'.num'};
1375: my $cdom = $env{'course.'.$courseid.'.domain'};
1376: return "/$cdom/$cnum";
1377: }
1378:
1379: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
1380: if (exists($courseinfo{'num'})) {
1381: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
1382: }
1383:
1384: return undef;
1385: }
1386:
1387: sub getsection {
1388: my ($udom,$unam,$courseid)=@_;
1389: my $cachetime=1800;
1390:
1391: my $hashid="$udom:$unam:$courseid";
1392: my ($result,$cached)=&is_cached_new('getsection',$hashid);
1393: if (defined($cached)) { return $result; }
1394:
1395: my %Pending;
1396: my %Expired;
1397: #
1398: # Each role can either have not started yet (pending), be active,
1399: # or have expired.
1400: #
1401: # If there is an active role, we are done.
1402: #
1403: # If there is more than one role which has not started yet,
1404: # choose the one which will start sooner
1405: # If there is one role which has not started yet, return it.
1406: #
1407: # If there is more than one expired role, choose the one which ended last.
1408: # If there is a role which has expired, return it.
1409: #
1410: $courseid = &courseid_to_courseurl($courseid);
1411: my %roleshash = &dump('roles',$udom,$unam,$courseid);
1412: foreach my $key (keys(%roleshash)) {
1413: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
1414: my $section=$1;
1415: if ($key eq $courseid.'_st') { $section=''; }
1416: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
1417: my $now=time;
1418: if (defined($end) && $end && ($now > $end)) {
1419: $Expired{$end}=$section;
1420: next;
1421: }
1422: if (defined($start) && $start && ($now < $start)) {
1423: $Pending{$start}=$section;
1424: next;
1425: }
1426: return &do_cache_new('getsection',$hashid,$section,$cachetime);
1427: }
1428: #
1429: # Presumedly there will be few matching roles from the above
1430: # loop and the sorting time will be negligible.
1431: if (scalar(keys(%Pending))) {
1432: my ($time) = sort {$a <=> $b} keys(%Pending);
1433: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
1434: }
1435: if (scalar(keys(%Expired))) {
1436: my @sorted = sort {$a <=> $b} keys(%Expired);
1437: my $time = pop(@sorted);
1438: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
1439: }
1440: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
1441: }
1442:
1443: sub save_cache {
1444: &purge_remembered();
1445: #&Apache::loncommon::validate_page();
1446: undef(%env);
1447: undef($env_loaded);
1448: }
1449:
1450: my $to_remember=-1;
1451: my %remembered;
1452: my %accessed;
1453: my $kicks=0;
1454: my $hits=0;
1455: sub make_key {
1456: my ($name,$id) = @_;
1457: if (length($id) > 65
1458: && length(&escape($id)) > 200) {
1459: $id=length($id).':'.&Digest::MD5::md5_hex($id);
1460: }
1461: return &escape($name.':'.$id);
1462: }
1463:
1464: sub devalidate_cache_new {
1465: my ($name,$id,$debug) = @_;
1466: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
1467: $id=&make_key($name,$id);
1468: $memcache->delete($id);
1469: delete($remembered{$id});
1470: delete($accessed{$id});
1471: }
1472:
1473: sub is_cached_new {
1474: my ($name,$id,$debug) = @_;
1475: $id=&make_key($name,$id);
1476: if (exists($remembered{$id})) {
1477: if ($debug) { &Apache::lonnet::logthis("Earyl return $id of $remembered{$id} "); }
1478: $accessed{$id}=[&gettimeofday()];
1479: $hits++;
1480: return ($remembered{$id},1);
1481: }
1482: my $value = $memcache->get($id);
1483: if (!(defined($value))) {
1484: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
1485: return (undef,undef);
1486: }
1487: if ($value eq '__undef__') {
1488: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
1489: $value=undef;
1490: }
1491: &make_room($id,$value,$debug);
1492: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
1493: return ($value,1);
1494: }
1495:
1496: sub do_cache_new {
1497: my ($name,$id,$value,$time,$debug) = @_;
1498: $id=&make_key($name,$id);
1499: my $setvalue=$value;
1500: if (!defined($setvalue)) {
1501: $setvalue='__undef__';
1502: }
1503: if (!defined($time) ) {
1504: $time=600;
1505: }
1506: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
1507: my $result = $memcache->set($id,$setvalue,$time);
1508: if (! $result) {
1509: &logthis("caching of id -> $id failed");
1510: $memcache->disconnect_all();
1511: }
1512: # need to make a copy of $value
1513: &make_room($id,$value,$debug);
1514: return $value;
1515: }
1516:
1517: sub make_room {
1518: my ($id,$value,$debug)=@_;
1519:
1520: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
1521: : $value;
1522: if ($to_remember<0) { return; }
1523: $accessed{$id}=[&gettimeofday()];
1524: if (scalar(keys(%remembered)) <= $to_remember) { return; }
1525: my $to_kick;
1526: my $max_time=0;
1527: foreach my $other (keys(%accessed)) {
1528: if (&tv_interval($accessed{$other}) > $max_time) {
1529: $to_kick=$other;
1530: $max_time=&tv_interval($accessed{$other});
1531: }
1532: }
1533: delete($remembered{$to_kick});
1534: delete($accessed{$to_kick});
1535: $kicks++;
1536: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
1537: return;
1538: }
1539:
1540: sub purge_remembered {
1541: #&logthis("Tossing ".scalar(keys(%remembered)));
1542: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
1543: undef(%remembered);
1544: undef(%accessed);
1545: }
1546: # ------------------------------------- Read an entry from a user's environment
1547:
1548: sub userenvironment {
1549: my ($udom,$unam,@what)=@_;
1550: my %returnhash=();
1551: my @answer=split(/\&/,
1552: &reply('get:'.$udom.':'.$unam.':environment:'.join('&',@what),
1553: &homeserver($unam,$udom)));
1554: my $i;
1555: for ($i=0;$i<=$#what;$i++) {
1556: $returnhash{$what[$i]}=&unescape($answer[$i]);
1557: }
1558: return %returnhash;
1559: }
1560:
1561: # ---------------------------------------------------------- Get a studentphoto
1562: sub studentphoto {
1563: my ($udom,$unam,$ext) = @_;
1564: my $home=&Apache::lonnet::homeserver($unam,$udom);
1565: if (defined($env{'request.course.id'})) {
1566: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
1567: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
1568: return(&retrievestudentphoto($udom,$unam,$ext));
1569: } else {
1570: my ($result,$perm_reqd)=
1571: &Apache::lonnet::auto_photo_permission($unam,$udom);
1572: if ($result eq 'ok') {
1573: if (!($perm_reqd eq 'yes')) {
1574: return(&retrievestudentphoto($udom,$unam,$ext));
1575: }
1576: }
1577: }
1578: }
1579: } else {
1580: my ($result,$perm_reqd) =
1581: &Apache::lonnet::auto_photo_permission($unam,$udom);
1582: if ($result eq 'ok') {
1583: if (!($perm_reqd eq 'yes')) {
1584: return(&retrievestudentphoto($udom,$unam,$ext));
1585: }
1586: }
1587: }
1588: return '/adm/lonKaputt/lonlogo_broken.gif';
1589: }
1590:
1591: sub retrievestudentphoto {
1592: my ($udom,$unam,$ext,$type) = @_;
1593: my $home=&Apache::lonnet::homeserver($unam,$udom);
1594: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
1595: if ($ret eq 'ok') {
1596: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
1597: if ($type eq 'thumbnail') {
1598: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
1599: }
1600: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
1601: return $tokenurl;
1602: } else {
1603: if ($type eq 'thumbnail') {
1604: return '/adm/lonKaputt/genericstudent_tn.gif';
1605: } else {
1606: return '/adm/lonKaputt/lonlogo_broken.gif';
1607: }
1608: }
1609: }
1610:
1611: # -------------------------------------------------------------------- New chat
1612:
1613: sub chatsend {
1614: my ($newentry,$anon,$group)=@_;
1615: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1616: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1617: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
1618: &reply('chatsend:'.$cdom.':'.$cnum.':'.
1619: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
1620: &escape($newentry)).':'.$group,$chome);
1621: }
1622:
1623: # ------------------------------------------ Find current version of a resource
1624:
1625: sub getversion {
1626: my $fname=&clutter(shift);
1627: unless ($fname=~/^\/res\//) { return -1; }
1628: return ¤tversion(&filelocation('',$fname));
1629: }
1630:
1631: sub currentversion {
1632: my $fname=shift;
1633: my ($result,$cached)=&is_cached_new('resversion',$fname);
1634: if (defined($cached)) { return $result; }
1635: my $author=$fname;
1636: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1637: my ($udom,$uname)=split(/\//,$author);
1638: my $home=homeserver($uname,$udom);
1639: if ($home eq 'no_host') {
1640: return -1;
1641: }
1642: my $answer=reply("currentversion:$fname",$home);
1643: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1644: return -1;
1645: }
1646: return &do_cache_new('resversion',$fname,$answer,600);
1647: }
1648:
1649: # ----------------------------- Subscribe to a resource, return URL if possible
1650:
1651: sub subscribe {
1652: my $fname=shift;
1653: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
1654: $fname=~s/[\n\r]//g;
1655: my $author=$fname;
1656: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1657: my ($udom,$uname)=split(/\//,$author);
1658: my $home=homeserver($uname,$udom);
1659: if ($home eq 'no_host') {
1660: return 'not_found';
1661: }
1662: my $answer=reply("sub:$fname",$home);
1663: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1664: $answer.=' by '.$home;
1665: }
1666: return $answer;
1667: }
1668:
1669: # -------------------------------------------------------------- Replicate file
1670:
1671: sub repcopy {
1672: my $filename=shift;
1673: $filename=~s/\/+/\//g;
1674: if ($filename=~m|^/home/httpd/html/adm/|) { return 'ok'; }
1675: if ($filename=~m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
1676: if ($filename=~m|^/home/httpd/html/userfiles/| or
1677: $filename=~m -^/*(uploaded|editupload)/-) {
1678: return &repcopy_userfile($filename);
1679: }
1680: $filename=~s/[\n\r]//g;
1681: my $transname="$filename.in.transfer";
1682: # FIXME: this should flock
1683: if ((-e $filename) || (-e $transname)) { return 'ok'; }
1684: my $remoteurl=subscribe($filename);
1685: if ($remoteurl =~ /^con_lost by/) {
1686: &logthis("Subscribe returned $remoteurl: $filename");
1687: return 'unavailable';
1688: } elsif ($remoteurl eq 'not_found') {
1689: #&logthis("Subscribe returned not_found: $filename");
1690: return 'not_found';
1691: } elsif ($remoteurl =~ /^rejected by/) {
1692: &logthis("Subscribe returned $remoteurl: $filename");
1693: return 'forbidden';
1694: } elsif ($remoteurl eq 'directory') {
1695: return 'ok';
1696: } else {
1697: my $author=$filename;
1698: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1699: my ($udom,$uname)=split(/\//,$author);
1700: my $home=homeserver($uname,$udom);
1701: unless ($home eq $perlvar{'lonHostID'}) {
1702: my @parts=split(/\//,$filename);
1703: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
1704: if ($path ne "$perlvar{'lonDocRoot'}/res") {
1705: &logthis("Malconfiguration for replication: $filename");
1706: return 'bad_request';
1707: }
1708: my $count;
1709: for ($count=5;$count<$#parts;$count++) {
1710: $path.="/$parts[$count]";
1711: if ((-e $path)!=1) {
1712: mkdir($path,0777);
1713: }
1714: }
1715: my $ua=new LWP::UserAgent;
1716: my $request=new HTTP::Request('GET',"$remoteurl");
1717: my $response=$ua->request($request,$transname);
1718: if ($response->is_error()) {
1719: unlink($transname);
1720: my $message=$response->status_line;
1721: &logthis("<font color=\"blue\">WARNING:"
1722: ." LWP get: $message: $filename</font>");
1723: return 'unavailable';
1724: } else {
1725: if ($remoteurl!~/\.meta$/) {
1726: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
1727: my $mresponse=$ua->request($mrequest,$filename.'.meta');
1728: if ($mresponse->is_error()) {
1729: unlink($filename.'.meta');
1730: &logthis(
1731: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
1732: }
1733: }
1734: rename($transname,$filename);
1735: return 'ok';
1736: }
1737: }
1738: }
1739: }
1740:
1741: # ------------------------------------------------ Get server side include body
1742: sub ssi_body {
1743: my ($filelink,%form)=@_;
1744: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
1745: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
1746: }
1747: my $output='';
1748: my $response;
1749: if ($filelink=~/^http\:/) {
1750: ($output,$response)=&externalssi($filelink);
1751: } else {
1752: ($output,$response)=&ssi($filelink,%form);
1753: }
1754: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
1755: $output=~s/^.*?\<body[^\>]*\>//si;
1756: $output=~s/\<\/body\s*\>.*?$//si;
1757: if (wantarray) {
1758: return ($output, $response);
1759: } else {
1760: return $output;
1761: }
1762: }
1763:
1764: # --------------------------------------------------------- Server Side Include
1765:
1766: sub absolute_url {
1767: my ($host_name) = @_;
1768: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
1769: if ($host_name eq '') {
1770: $host_name = $ENV{'SERVER_NAME'};
1771: }
1772: return $protocol.$host_name;
1773: }
1774:
1775: #
1776: # Server side include.
1777: # Parameters:
1778: # fn Possibly encrypted resource name/id.
1779: # form Hash that describes how the rendering should be done
1780: # and other things.
1781: # Returns:
1782: # Scalar context: The content of the response.
1783: # Array context: 2 element list of the content and the full response object.
1784: #
1785: sub ssi {
1786:
1787: my ($fn,%form)=@_;
1788: my $ua=new LWP::UserAgent;
1789: my $request;
1790:
1791: $form{'no_update_last_known'}=1;
1792: &Apache::lonenc::check_encrypt(\$fn);
1793: if (%form) {
1794: $request=new HTTP::Request('POST',&absolute_url().$fn);
1795: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys %form));
1796: } else {
1797: $request=new HTTP::Request('GET',&absolute_url().$fn);
1798: }
1799:
1800: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
1801: my $response=$ua->request($request);
1802:
1803: if (wantarray) {
1804: return ($response->content, $response);
1805: } else {
1806: return $response->content;
1807: }
1808: }
1809:
1810: sub externalssi {
1811: my ($url)=@_;
1812: my $ua=new LWP::UserAgent;
1813: my $request=new HTTP::Request('GET',$url);
1814: my $response=$ua->request($request);
1815: if (wantarray) {
1816: return ($response->content, $response);
1817: } else {
1818: return $response->content;
1819: }
1820: }
1821:
1822: # -------------------------------- Allow a /uploaded/ URI to be vouched for
1823:
1824: sub allowuploaded {
1825: my ($srcurl,$url)=@_;
1826: $url=&clutter(&declutter($url));
1827: my $dir=$url;
1828: $dir=~s/\/[^\/]+$//;
1829: my %httpref=();
1830: my $httpurl=&hreflocation('',$url);
1831: $httpref{'httpref.'.$httpurl}=$srcurl;
1832: &Apache::lonnet::appenv(\%httpref);
1833: }
1834:
1835: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
1836: # input: action, courseID, current domain, intended
1837: # path to file, source of file, instruction to parse file for objects,
1838: # ref to hash for embedded objects,
1839: # ref to hash for codebase of java objects.
1840: #
1841: # output: url to file (if action was uploaddoc),
1842: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
1843: #
1844: # Allows directory structure to be used within lonUsers/../userfiles/ for a
1845: # course.
1846: #
1847: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1848: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
1849: # course's home server.
1850: #
1851: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
1852: # be copied from $source (current location) to
1853: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1854: # and will then be copied to
1855: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
1856: # course's home server.
1857: #
1858: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1859: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
1860: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1861: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
1862: # in course's home server.
1863: #
1864:
1865: sub process_coursefile {
1866: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase)=@_;
1867: my $fetchresult;
1868: my $home=&homeserver($docuname,$docudom);
1869: if ($action eq 'propagate') {
1870: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1871: $home);
1872: } else {
1873: my $fpath = '';
1874: my $fname = $file;
1875: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
1876: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
1877: my $filepath = &build_filepath($fpath);
1878: if ($action eq 'copy') {
1879: if ($source eq '') {
1880: $fetchresult = 'no source file';
1881: return $fetchresult;
1882: } else {
1883: my $destination = $filepath.'/'.$fname;
1884: rename($source,$destination);
1885: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1886: $home);
1887: }
1888: } elsif ($action eq 'uploaddoc') {
1889: open(my $fh,'>'.$filepath.'/'.$fname);
1890: print $fh $env{'form.'.$source};
1891: close($fh);
1892: if ($parser eq 'parse') {
1893: my $parse_result = &extract_embedded_items($filepath,$fname,$allfiles,$codebase);
1894: unless ($parse_result eq 'ok') {
1895: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
1896: }
1897: }
1898: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1899: $home);
1900: if ($fetchresult eq 'ok') {
1901: return '/uploaded/'.$fpath.'/'.$fname;
1902: } else {
1903: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1904: ' to host '.$home.': '.$fetchresult);
1905: return '/adm/notfound.html';
1906: }
1907: }
1908: }
1909: unless ( $fetchresult eq 'ok') {
1910: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1911: ' to host '.$home.': '.$fetchresult);
1912: }
1913: return $fetchresult;
1914: }
1915:
1916: sub build_filepath {
1917: my ($fpath) = @_;
1918: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
1919: unless ($fpath eq '') {
1920: my @parts=split('/',$fpath);
1921: foreach my $part (@parts) {
1922: $filepath.= '/'.$part;
1923: if ((-e $filepath)!=1) {
1924: mkdir($filepath,0777);
1925: }
1926: }
1927: }
1928: return $filepath;
1929: }
1930:
1931: sub store_edited_file {
1932: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
1933: my $file = $primary_url;
1934: $file =~ s#^/uploaded/$docudom/$docuname/##;
1935: my $fpath = '';
1936: my $fname = $file;
1937: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
1938: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
1939: my $filepath = &build_filepath($fpath);
1940: open(my $fh,'>'.$filepath.'/'.$fname);
1941: print $fh $content;
1942: close($fh);
1943: my $home=&homeserver($docuname,$docudom);
1944: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1945: $home);
1946: if ($$fetchresult eq 'ok') {
1947: return '/uploaded/'.$fpath.'/'.$fname;
1948: } else {
1949: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1950: ' to host '.$home.': '.$$fetchresult);
1951: return '/adm/notfound.html';
1952: }
1953: }
1954:
1955: sub clean_filename {
1956: my ($fname,$args)=@_;
1957: # Replace Windows backslashes by forward slashes
1958: $fname=~s/\\/\//g;
1959: if (!$args->{'keep_path'}) {
1960: # Get rid of everything but the actual filename
1961: $fname=~s/^.*\/([^\/]+)$/$1/;
1962: }
1963: # Replace spaces by underscores
1964: $fname=~s/\s+/\_/g;
1965: # Replace all other weird characters by nothing
1966: $fname=~s{[^/\w\.\-]}{}g;
1967: # Replace all .\d. sequences with _\d. so they no longer look like version
1968: # numbers
1969: $fname=~s/\.(\d+)(?=\.)/_$1/g;
1970: return $fname;
1971: }
1972:
1973: # --------------- Take an uploaded file and put it into the userfiles directory
1974: # input: $formname - the contents of the file are in $env{"form.$formname"}
1975: # the desired filenam is in $env{"form.$formname.filename"}
1976: # $coursedoc - if true up to the current course
1977: # if false
1978: # $subdir - directory in userfile to store the file into
1979: # $parser - instruction to parse file for objects ($parser = parse)
1980: # $allfiles - reference to hash for embedded objects
1981: # $codebase - reference to hash for codebase of java objects
1982: # $desuname - username for permanent storage of uploaded file
1983: # $dsetudom - domain for permanaent storage of uploaded file
1984: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
1985: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
1986: #
1987: # output: url of file in userspace, or error: <message>
1988: # or /adm/notfound.html if failure to upload occurse
1989:
1990:
1991: sub userfileupload {
1992: my ($formname,$coursedoc,$subdir,$parser,$allfiles,$codebase,$destuname,
1993: $destudom,$thumbwidth,$thumbheight)=@_;
1994: if (!defined($subdir)) { $subdir='unknown'; }
1995: my $fname=$env{'form.'.$formname.'.filename'};
1996: $fname=&clean_filename($fname);
1997: # See if there is anything left
1998: unless ($fname) { return 'error: no uploaded file'; }
1999: chop($env{'form.'.$formname});
2000: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) { #files uploaded to help request form are handled differently
2001: my $now = time;
2002: my $filepath = 'tmp/helprequests/'.$now;
2003: my @parts=split(/\//,$filepath);
2004: my $fullpath = $perlvar{'lonDaemons'};
2005: for (my $i=0;$i<@parts;$i++) {
2006: $fullpath .= '/'.$parts[$i];
2007: if ((-e $fullpath)!=1) {
2008: mkdir($fullpath,0777);
2009: }
2010: }
2011: open(my $fh,'>'.$fullpath.'/'.$fname);
2012: print $fh $env{'form.'.$formname};
2013: close($fh);
2014: return $fullpath.'/'.$fname;
2015: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) { #files uploaded to create course page are handled differently
2016: my $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
2017: '_'.$env{'user.domain'}.'/pending';
2018: my @parts=split(/\//,$filepath);
2019: my $fullpath = $perlvar{'lonDaemons'};
2020: for (my $i=0;$i<@parts;$i++) {
2021: $fullpath .= '/'.$parts[$i];
2022: if ((-e $fullpath)!=1) {
2023: mkdir($fullpath,0777);
2024: }
2025: }
2026: open(my $fh,'>'.$fullpath.'/'.$fname);
2027: print $fh $env{'form.'.$formname};
2028: close($fh);
2029: return $fullpath.'/'.$fname;
2030: }
2031:
2032: # Create the directory if not present
2033: $fname="$subdir/$fname";
2034: if ($coursedoc) {
2035: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2036: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2037: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
2038: return &finishuserfileupload($docuname,$docudom,
2039: $formname,$fname,$parser,$allfiles,
2040: $codebase,$thumbwidth,$thumbheight);
2041: } else {
2042: $fname=$env{'form.folder'}.'/'.$fname;
2043: return &process_coursefile('uploaddoc',$docuname,$docudom,
2044: $fname,$formname,$parser,
2045: $allfiles,$codebase);
2046: }
2047: } elsif (defined($destuname)) {
2048: my $docuname=$destuname;
2049: my $docudom=$destudom;
2050: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2051: $parser,$allfiles,$codebase,
2052: $thumbwidth,$thumbheight);
2053:
2054: } else {
2055: my $docuname=$env{'user.name'};
2056: my $docudom=$env{'user.domain'};
2057: if (exists($env{'form.group'})) {
2058: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2059: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2060: }
2061: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2062: $parser,$allfiles,$codebase,
2063: $thumbwidth,$thumbheight);
2064: }
2065: }
2066:
2067: sub finishuserfileupload {
2068: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
2069: $thumbwidth,$thumbheight) = @_;
2070: my $path=$docudom.'/'.$docuname.'/';
2071: my $filepath=$perlvar{'lonDocRoot'};
2072: my ($fnamepath,$file,$fetchthumb);
2073: $file=$fname;
2074: if ($fname=~m|/|) {
2075: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
2076: $path.=$fnamepath.'/';
2077: }
2078: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
2079: my $count;
2080: for ($count=4;$count<=$#parts;$count++) {
2081: $filepath.="/$parts[$count]";
2082: if ((-e $filepath)!=1) {
2083: mkdir($filepath,0777);
2084: }
2085: }
2086: # Save the file
2087: {
2088: if (!open(FH,'>'.$filepath.'/'.$file)) {
2089: &logthis('Failed to create '.$filepath.'/'.$file);
2090: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
2091: return '/adm/notfound.html';
2092: }
2093: if (!print FH ($env{'form.'.$formname})) {
2094: &logthis('Failed to write to '.$filepath.'/'.$file);
2095: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
2096: return '/adm/notfound.html';
2097: }
2098: close(FH);
2099: }
2100: if ($parser eq 'parse') {
2101: my $parse_result = &extract_embedded_items($filepath,$file,$allfiles,
2102: $codebase);
2103: unless ($parse_result eq 'ok') {
2104: &logthis('Failed to parse '.$filepath.$file.
2105: ' for embedded media: '.$parse_result);
2106: }
2107: }
2108: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
2109: my $input = $filepath.'/'.$file;
2110: my $output = $filepath.'/'.'tn-'.$file;
2111: my $thumbsize = $thumbwidth.'x'.$thumbheight;
2112: system("convert -sample $thumbsize $input $output");
2113: if (-e $filepath.'/'.'tn-'.$file) {
2114: $fetchthumb = 1;
2115: }
2116: }
2117:
2118: # Notify homeserver to grep it
2119: #
2120: my $docuhome=&homeserver($docuname,$docudom);
2121: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
2122: if ($fetchresult eq 'ok') {
2123: if ($fetchthumb) {
2124: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
2125: if ($thumbresult ne 'ok') {
2126: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
2127: $docuhome.': '.$thumbresult);
2128: }
2129: }
2130: #
2131: # Return the URL to it
2132: return '/uploaded/'.$path.$file;
2133: } else {
2134: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
2135: ': '.$fetchresult);
2136: return '/adm/notfound.html';
2137: }
2138: }
2139:
2140: sub extract_embedded_items {
2141: my ($filepath,$file,$allfiles,$codebase,$content) = @_;
2142: my @state = ();
2143: my %javafiles = (
2144: codebase => '',
2145: code => '',
2146: archive => ''
2147: );
2148: my %mediafiles = (
2149: src => '',
2150: movie => '',
2151: );
2152: my $p;
2153: if ($content) {
2154: $p = HTML::LCParser->new($content);
2155: } else {
2156: $p = HTML::LCParser->new($filepath.'/'.$file);
2157: }
2158: while (my $t=$p->get_token()) {
2159: if ($t->[0] eq 'S') {
2160: my ($tagname, $attr) = ($t->[1],$t->[2]);
2161: push(@state, $tagname);
2162: if (lc($tagname) eq 'allow') {
2163: &add_filetype($allfiles,$attr->{'src'},'src');
2164: }
2165: if (lc($tagname) eq 'img') {
2166: &add_filetype($allfiles,$attr->{'src'},'src');
2167: }
2168: if (lc($tagname) eq 'a') {
2169: &add_filetype($allfiles,$attr->{'href'},'href');
2170: }
2171: if (lc($tagname) eq 'script') {
2172: if ($attr->{'archive'} =~ /\.jar$/i) {
2173: &add_filetype($allfiles,$attr->{'archive'},'archive');
2174: } else {
2175: &add_filetype($allfiles,$attr->{'src'},'src');
2176: }
2177: }
2178: if (lc($tagname) eq 'link') {
2179: if (lc($attr->{'rel'}) eq 'stylesheet') {
2180: &add_filetype($allfiles,$attr->{'href'},'href');
2181: }
2182: }
2183: if (lc($tagname) eq 'object' ||
2184: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
2185: foreach my $item (keys(%javafiles)) {
2186: $javafiles{$item} = '';
2187: }
2188: }
2189: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
2190: my $name = lc($attr->{'name'});
2191: foreach my $item (keys(%javafiles)) {
2192: if ($name eq $item) {
2193: $javafiles{$item} = $attr->{'value'};
2194: last;
2195: }
2196: }
2197: foreach my $item (keys(%mediafiles)) {
2198: if ($name eq $item) {
2199: &add_filetype($allfiles, $attr->{'value'}, 'value');
2200: last;
2201: }
2202: }
2203: }
2204: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
2205: foreach my $item (keys(%javafiles)) {
2206: if ($attr->{$item}) {
2207: $javafiles{$item} = $attr->{$item};
2208: last;
2209: }
2210: }
2211: foreach my $item (keys(%mediafiles)) {
2212: if ($attr->{$item}) {
2213: &add_filetype($allfiles,$attr->{$item},$item);
2214: last;
2215: }
2216: }
2217: }
2218: } elsif ($t->[0] eq 'E') {
2219: my ($tagname) = ($t->[1]);
2220: if ($javafiles{'codebase'} ne '') {
2221: $javafiles{'codebase'} .= '/';
2222: }
2223: if (lc($tagname) eq 'applet' ||
2224: lc($tagname) eq 'object' ||
2225: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
2226: ) {
2227: foreach my $item (keys(%javafiles)) {
2228: if ($item ne 'codebase' && $javafiles{$item} ne '') {
2229: my $file=$javafiles{'codebase'}.$javafiles{$item};
2230: &add_filetype($allfiles,$file,$item);
2231: }
2232: }
2233: }
2234: pop @state;
2235: }
2236: }
2237: return 'ok';
2238: }
2239:
2240: sub add_filetype {
2241: my ($allfiles,$file,$type)=@_;
2242: if (exists($allfiles->{$file})) {
2243: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
2244: push(@{$allfiles->{$file}}, &escape($type));
2245: }
2246: } else {
2247: @{$allfiles->{$file}} = (&escape($type));
2248: }
2249: }
2250:
2251: sub removeuploadedurl {
2252: my ($url)=@_;
2253: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
2254: return &removeuserfile($uname,$udom,$fname);
2255: }
2256:
2257: sub removeuserfile {
2258: my ($docuname,$docudom,$fname)=@_;
2259: my $home=&homeserver($docuname,$docudom);
2260: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
2261: if ($result eq 'ok') {
2262: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
2263: my $metafile = $fname.'.meta';
2264: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
2265: my $url = "/uploaded/$docudom/$docuname/$fname";
2266: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2267: my $sqlresult =
2268: &update_portfolio_table($docuname,$docudom,$file,
2269: 'portfolio_metadata',$group,
2270: 'delete');
2271: }
2272: }
2273: return $result;
2274: }
2275:
2276: sub mkdiruserfile {
2277: my ($docuname,$docudom,$dir)=@_;
2278: my $home=&homeserver($docuname,$docudom);
2279: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
2280: }
2281:
2282: sub renameuserfile {
2283: my ($docuname,$docudom,$old,$new)=@_;
2284: my $home=&homeserver($docuname,$docudom);
2285: my $result = &reply("renameuserfile:$docudom:$docuname:".
2286: &escape("$old").':'.&escape("$new"),$home);
2287: if ($result eq 'ok') {
2288: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
2289: my $oldmeta = $old.'.meta';
2290: my $newmeta = $new.'.meta';
2291: my $metaresult =
2292: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
2293: my $url = "/uploaded/$docudom/$docuname/$old";
2294: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2295: my $sqlresult =
2296: &update_portfolio_table($docuname,$docudom,$file,
2297: 'portfolio_metadata',$group,
2298: 'delete');
2299: }
2300: }
2301: return $result;
2302: }
2303:
2304: # ------------------------------------------------------------------------- Log
2305:
2306: sub log {
2307: my ($dom,$nam,$hom,$what)=@_;
2308: return critical("log:$dom:$nam:$what",$hom);
2309: }
2310:
2311: # ------------------------------------------------------------------ Course Log
2312: #
2313: # This routine flushes several buffers of non-mission-critical nature
2314: #
2315:
2316: sub flushcourselogs {
2317: &logthis('Flushing log buffers');
2318: #
2319: # course logs
2320: # This is a log of all transactions in a course, which can be used
2321: # for data mining purposes
2322: #
2323: # It also collects the courseid database, which lists last transaction
2324: # times and course titles for all courseids
2325: #
2326: my %courseidbuffer=();
2327: foreach my $crsid (keys(%courselogs)) {
2328: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
2329: &escape($courselogs{$crsid}),
2330: $coursehombuf{$crsid}) eq 'ok') {
2331: delete $courselogs{$crsid};
2332: } else {
2333: &logthis('Failed to flush log buffer for '.$crsid);
2334: if (length($courselogs{$crsid})>40000) {
2335: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
2336: " exceeded maximum size, deleting.</font>");
2337: delete $courselogs{$crsid};
2338: }
2339: }
2340: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
2341: 'description' => $coursedescrbuf{$crsid},
2342: 'inst_code' => $courseinstcodebuf{$crsid},
2343: 'type' => $coursetypebuf{$crsid},
2344: 'owner' => $courseownerbuf{$crsid},
2345: };
2346: }
2347: #
2348: # Write course id database (reverse lookup) to homeserver of courses
2349: # Is used in pickcourse
2350: #
2351: foreach my $crs_home (keys(%courseidbuffer)) {
2352: my $response = &courseidput(&host_domain($crs_home),
2353: $courseidbuffer{$crs_home},
2354: $crs_home,'timeonly');
2355: }
2356: #
2357: # File accesses
2358: # Writes to the dynamic metadata of resources to get hit counts, etc.
2359: #
2360: foreach my $entry (keys(%accesshash)) {
2361: if ($entry =~ /___count$/) {
2362: my ($dom,$name);
2363: ($dom,$name,undef)=
2364: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
2365: if (! defined($dom) || $dom eq '' ||
2366: ! defined($name) || $name eq '') {
2367: my $cid = $env{'request.course.id'};
2368: $dom = $env{'request.'.$cid.'.domain'};
2369: $name = $env{'request.'.$cid.'.num'};
2370: }
2371: my $value = $accesshash{$entry};
2372: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
2373: my %temphash=($url => $value);
2374: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
2375: if ($result eq 'ok') {
2376: delete $accesshash{$entry};
2377: } elsif ($result eq 'unknown_cmd') {
2378: # Target server has old code running on it.
2379: my %temphash=($entry => $value);
2380: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2381: delete $accesshash{$entry};
2382: }
2383: }
2384: } else {
2385: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
2386: my %temphash=($entry => $accesshash{$entry});
2387: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2388: delete $accesshash{$entry};
2389: }
2390: }
2391: }
2392: #
2393: # Roles
2394: # Reverse lookup of user roles for course faculty/staff and co-authorship
2395: #
2396: foreach my $entry (keys(%userrolehash)) {
2397: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
2398: split(/\:/,$entry);
2399: if (&Apache::lonnet::put('nohist_userroles',
2400: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
2401: $rudom,$runame) eq 'ok') {
2402: delete $userrolehash{$entry};
2403: }
2404: }
2405: #
2406: # Reverse lookup of domain roles (dc, ad, li, sc, au)
2407: #
2408: my %domrolebuffer = ();
2409: foreach my $entry (keys %domainrolehash) {
2410: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
2411: if ($domrolebuffer{$rudom}) {
2412: $domrolebuffer{$rudom}.='&'.&escape($entry).
2413: '='.&escape($domainrolehash{$entry});
2414: } else {
2415: $domrolebuffer{$rudom}.=&escape($entry).
2416: '='.&escape($domainrolehash{$entry});
2417: }
2418: delete $domainrolehash{$entry};
2419: }
2420: foreach my $dom (keys(%domrolebuffer)) {
2421: my %servers = &get_servers($dom,'library');
2422: foreach my $tryserver (keys(%servers)) {
2423: unless (&reply('domroleput:'.$dom.':'.
2424: $domrolebuffer{$dom},$tryserver) eq 'ok') {
2425: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
2426: }
2427: }
2428: }
2429: $dumpcount++;
2430: }
2431:
2432: sub courselog {
2433: my $what=shift;
2434: $what=time.':'.$what;
2435: unless ($env{'request.course.id'}) { return ''; }
2436: $coursedombuf{$env{'request.course.id'}}=
2437: $env{'course.'.$env{'request.course.id'}.'.domain'};
2438: $coursenumbuf{$env{'request.course.id'}}=
2439: $env{'course.'.$env{'request.course.id'}.'.num'};
2440: $coursehombuf{$env{'request.course.id'}}=
2441: $env{'course.'.$env{'request.course.id'}.'.home'};
2442: $coursedescrbuf{$env{'request.course.id'}}=
2443: $env{'course.'.$env{'request.course.id'}.'.description'};
2444: $courseinstcodebuf{$env{'request.course.id'}}=
2445: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
2446: $courseownerbuf{$env{'request.course.id'}}=
2447: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
2448: $coursetypebuf{$env{'request.course.id'}}=
2449: $env{'course.'.$env{'request.course.id'}.'.type'};
2450: if (defined $courselogs{$env{'request.course.id'}}) {
2451: $courselogs{$env{'request.course.id'}}.='&'.$what;
2452: } else {
2453: $courselogs{$env{'request.course.id'}}.=$what;
2454: }
2455: if (length($courselogs{$env{'request.course.id'}})>4048) {
2456: &flushcourselogs();
2457: }
2458: }
2459:
2460: sub courseacclog {
2461: my $fnsymb=shift;
2462: unless ($env{'request.course.id'}) { return ''; }
2463: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
2464: if ($fnsymb=~/(problem|exam|quiz|assess|survey|form|task|page)$/) {
2465: $what.=':POST';
2466: # FIXME: Probably ought to escape things....
2467: foreach my $key (keys(%env)) {
2468: if ($key=~/^form\.(.*)/) {
2469: $what.=':'.$1.'='.$env{$key};
2470: }
2471: }
2472: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
2473: # FIXME: We should not be depending on a form parameter that someone
2474: # editing lonsearchcat.pm might change in the future.
2475: if ($env{'form.phase'} eq 'course_search') {
2476: $what.= ':POST';
2477: # FIXME: Probably ought to escape things....
2478: foreach my $element ('courseexp','crsfulltext','crsrelated',
2479: 'crsdiscuss') {
2480: $what.=':'.$element.'='.$env{'form.'.$element};
2481: }
2482: }
2483: }
2484: &courselog($what);
2485: }
2486:
2487: sub countacc {
2488: my $url=&declutter(shift);
2489: return if (! defined($url) || $url eq '');
2490: unless ($env{'request.course.id'}) { return ''; }
2491: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
2492: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
2493: $accesshash{$key}++;
2494: }
2495:
2496: sub linklog {
2497: my ($from,$to)=@_;
2498: $from=&declutter($from);
2499: $to=&declutter($to);
2500: $accesshash{$from.'___'.$to.'___comefrom'}=1;
2501: $accesshash{$to.'___'.$from.'___goto'}=1;
2502: }
2503:
2504: sub userrolelog {
2505: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
2506: if (($trole=~/^ca/) || ($trole=~/^aa/) ||
2507: ($trole=~/^in/) || ($trole=~/^cc/) ||
2508: ($trole=~/^ep/) || ($trole=~/^cr/) ||
2509: ($trole=~/^ta/)) {
2510: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2511: $userrolehash
2512: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2513: =$tend.':'.$tstart;
2514: }
2515: if (($env{'request.role'} =~ /dc\./) &&
2516: (($trole=~/^au/) || ($trole=~/^in/) ||
2517: ($trole=~/^cc/) || ($trole=~/^ep/) ||
2518: ($trole=~/^cr/) || ($trole=~/^ta/))) {
2519: $userrolehash
2520: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
2521: =$tend.':'.$tstart;
2522: }
2523: if (($trole=~/^dc/) || ($trole=~/^ad/) ||
2524: ($trole=~/^li/) || ($trole=~/^li/) ||
2525: ($trole=~/^au/) || ($trole=~/^dg/) ||
2526: ($trole=~/^sc/)) {
2527: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2528: $domainrolehash
2529: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2530: = $tend.':'.$tstart;
2531: }
2532: }
2533:
2534: sub courserolelog {
2535: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
2536: if (($trole eq 'cc') || ($trole eq 'in') ||
2537: ($trole eq 'ep') || ($trole eq 'ad') ||
2538: ($trole eq 'ta') || ($trole eq 'st') ||
2539: ($trole=~/^cr/) || ($trole eq 'gr')) {
2540: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
2541: my $cdom = $1;
2542: my $cnum = $2;
2543: my $sec = $3;
2544: my $namespace = 'rolelog';
2545: my %storehash = (
2546: role => $trole,
2547: start => $tstart,
2548: end => $tend,
2549: selfenroll => $selfenroll,
2550: context => $context,
2551: );
2552: if ($trole eq 'gr') {
2553: $namespace = 'groupslog';
2554: $storehash{'group'} = $sec;
2555: } else {
2556: $storehash{'section'} = $sec;
2557: }
2558: &instructor_log($namespace,\%storehash,$delflag,$username,$domain,$cnum,$cdom);
2559: }
2560: }
2561: return;
2562: }
2563:
2564: sub get_course_adv_roles {
2565: my ($cid,$codes) = @_;
2566: $cid=$env{'request.course.id'} unless (defined($cid));
2567: my %coursehash=&coursedescription($cid);
2568: my %nothide=();
2569: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2570: if ($user !~ /:/) {
2571: $nothide{join(':',split(/[\@]/,$user))}=1;
2572: } else {
2573: $nothide{$user}=1;
2574: }
2575: }
2576: my %returnhash=();
2577: my %dumphash=
2578: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
2579: my $now=time;
2580: foreach my $entry (keys %dumphash) {
2581: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
2582: if (($tstart) && ($tstart<0)) { next; }
2583: if (($tend) && ($tend<$now)) { next; }
2584: if (($tstart) && ($now<$tstart)) { next; }
2585: my ($role,$username,$domain,$section)=split(/\:/,$entry);
2586: if ($username eq '' || $domain eq '') { next; }
2587: if ((&privileged($username,$domain)) &&
2588: (!$nothide{$username.':'.$domain})) { next; }
2589: if ($role eq 'cr') { next; }
2590: if ($codes) {
2591: if ($section) { $role .= ':'.$section; }
2592: if ($returnhash{$role}) {
2593: $returnhash{$role}.=','.$username.':'.$domain;
2594: } else {
2595: $returnhash{$role}=$username.':'.$domain;
2596: }
2597: } else {
2598: my $key=&plaintext($role);
2599: if ($section) { $key.=' (Section '.$section.')'; }
2600: if ($returnhash{$key}) {
2601: $returnhash{$key}.=','.$username.':'.$domain;
2602: } else {
2603: $returnhash{$key}=$username.':'.$domain;
2604: }
2605: }
2606: }
2607: return %returnhash;
2608: }
2609:
2610: sub get_my_roles {
2611: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
2612: unless (defined($uname)) { $uname=$env{'user.name'}; }
2613: unless (defined($udom)) { $udom=$env{'user.domain'}; }
2614: my (%dumphash,%nothide);
2615: if ($context eq 'userroles') {
2616: %dumphash = &dump('roles',$udom,$uname);
2617: } else {
2618: %dumphash=
2619: &dump('nohist_userroles',$udom,$uname);
2620: if ($hidepriv) {
2621: my %coursehash=&coursedescription($udom.'_'.$uname);
2622: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2623: if ($user !~ /:/) {
2624: $nothide{join(':',split(/[\@]/,$user))} = 1;
2625: } else {
2626: $nothide{$user} = 1;
2627: }
2628: }
2629: }
2630: }
2631: my %returnhash=();
2632: my $now=time;
2633: foreach my $entry (keys(%dumphash)) {
2634: my ($role,$tend,$tstart);
2635: if ($context eq 'userroles') {
2636: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
2637: } else {
2638: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
2639: }
2640: if (($tstart) && ($tstart<0)) { next; }
2641: my $status = 'active';
2642: if (($tend) && ($tend<=$now)) {
2643: $status = 'previous';
2644: }
2645: if (($tstart) && ($now<$tstart)) {
2646: $status = 'future';
2647: }
2648: if (ref($types) eq 'ARRAY') {
2649: if (!grep(/^\Q$status\E$/,@{$types})) {
2650: next;
2651: }
2652: } else {
2653: if ($status ne 'active') {
2654: next;
2655: }
2656: }
2657: my ($rolecode,$username,$domain,$section,$area);
2658: if ($context eq 'userroles') {
2659: ($area,$rolecode) = split(/_/,$entry);
2660: (undef,$domain,$username,$section) = split(/\//,$area);
2661: } else {
2662: ($role,$username,$domain,$section) = split(/\:/,$entry);
2663: }
2664: if (ref($roledoms) eq 'ARRAY') {
2665: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
2666: next;
2667: }
2668: }
2669: if (ref($roles) eq 'ARRAY') {
2670: if (!grep(/^\Q$role\E$/,@{$roles})) {
2671: if ($role =~ /^cr\//) {
2672: if (!grep(/^cr$/,@{$roles})) {
2673: next;
2674: }
2675: } else {
2676: next;
2677: }
2678: }
2679: }
2680: if ($hidepriv) {
2681: if ((&privileged($username,$domain)) &&
2682: (!$nothide{$username.':'.$domain})) {
2683: next;
2684: }
2685: }
2686: if ($withsec) {
2687: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
2688: $tstart.':'.$tend;
2689: } else {
2690: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
2691: }
2692: }
2693: return %returnhash;
2694: }
2695:
2696: # ----------------------------------------------------- Frontpage Announcements
2697: #
2698: #
2699:
2700: sub postannounce {
2701: my ($server,$text)=@_;
2702: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
2703: unless ($text=~/\w/) { $text=''; }
2704: return &reply('setannounce:'.&escape($text),$server);
2705: }
2706:
2707: sub getannounce {
2708:
2709: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
2710: my $announcement='';
2711: while (my $line = <$fh>) { $announcement .= $line; }
2712: close($fh);
2713: if ($announcement=~/\w/) {
2714: return
2715: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
2716: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
2717: } else {
2718: return '';
2719: }
2720: } else {
2721: return '';
2722: }
2723: }
2724:
2725: # ---------------------------------------------------------- Course ID routines
2726: # Deal with domain's nohist_courseid.db files
2727: #
2728:
2729: sub courseidput {
2730: my ($domain,$storehash,$coursehome,$caller) = @_;
2731: my $outcome;
2732: if ($caller eq 'timeonly') {
2733: my $cids = '';
2734: foreach my $item (keys(%$storehash)) {
2735: $cids.=&escape($item).'&';
2736: }
2737: $cids=~s/\&$//;
2738: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
2739: $coursehome);
2740: } else {
2741: my $items = '';
2742: foreach my $item (keys(%$storehash)) {
2743: $items.= &escape($item).'='.
2744: &freeze_escape($$storehash{$item}).'&';
2745: }
2746: $items=~s/\&$//;
2747: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
2748: $coursehome);
2749: }
2750: if ($outcome eq 'unknown_cmd') {
2751: my $what;
2752: foreach my $cid (keys(%$storehash)) {
2753: $what .= &escape($cid).'=';
2754: foreach my $item ('description','inst_code','owner','type') {
2755: $what .= &escape($storehash->{$cid}{$item}).':';
2756: }
2757: $what =~ s/\:$/&/;
2758: }
2759: $what =~ s/\&$//;
2760: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
2761: } else {
2762: return $outcome;
2763: }
2764: }
2765:
2766: sub courseiddump {
2767: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
2768: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
2769: $selfenrollonly,$catfilter)=@_;
2770: my $as_hash = 1;
2771: my %returnhash;
2772: if (!$domfilter) { $domfilter=''; }
2773: my %libserv = &all_library();
2774: foreach my $tryserver (keys(%libserv)) {
2775: if ( ( $hostidflag == 1
2776: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
2777: || (!defined($hostidflag)) ) {
2778:
2779: if (($domfilter eq '') ||
2780: (&host_domain($tryserver) eq $domfilter)) {
2781: my $rep =
2782: &reply('courseiddump:'.&host_domain($tryserver).':'.
2783: $sincefilter.':'.&escape($descfilter).':'.
2784: &escape($instcodefilter).':'.&escape($ownerfilter).
2785: ':'.&escape($coursefilter).':'.&escape($typefilter).
2786: ':'.&escape($regexp_ok).':'.$as_hash.':'.
2787: &escape($selfenrollonly).':'.&escape($catfilter),$tryserver);
2788: my @pairs=split(/\&/,$rep);
2789: foreach my $item (@pairs) {
2790: my ($key,$value)=split(/\=/,$item,2);
2791: $key = &unescape($key);
2792: next if ($key =~ /^error: 2 /);
2793: my $result = &thaw_unescape($value);
2794: if (ref($result) eq 'HASH') {
2795: $returnhash{$key}=$result;
2796: } else {
2797: my @responses = split(/:/,$value);
2798: my @items = ('description','inst_code','owner','type');
2799: for (my $i=0; $i<@responses; $i++) {
2800: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
2801: }
2802: }
2803: }
2804: }
2805: }
2806: }
2807: return %returnhash;
2808: }
2809:
2810: # ---------------------------------------------------------- DC e-mail
2811:
2812: sub dcmailput {
2813: my ($domain,$msgid,$message,$server)=@_;
2814: my $status = &Apache::lonnet::critical(
2815: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
2816: &escape($message),$server);
2817: return $status;
2818: }
2819:
2820: sub dcmaildump {
2821: my ($dom,$startdate,$enddate,$senders) = @_;
2822: my %returnhash=();
2823:
2824: if (defined(&domain($dom,'primary'))) {
2825: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
2826: &escape($enddate).':';
2827: my @esc_senders=map { &escape($_)} @$senders;
2828: $cmd.=&escape(join('&',@esc_senders));
2829: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
2830: my ($key,$value) = split(/\=/,$line,2);
2831: if (($key) && ($value)) {
2832: $returnhash{&unescape($key)} = &unescape($value);
2833: }
2834: }
2835: }
2836: return %returnhash;
2837: }
2838: # ---------------------------------------------------------- Domain roles
2839:
2840: sub get_domain_roles {
2841: my ($dom,$roles,$startdate,$enddate)=@_;
2842: if (undef($startdate) || $startdate eq '') {
2843: $startdate = '.';
2844: }
2845: if (undef($enddate) || $enddate eq '') {
2846: $enddate = '.';
2847: }
2848: my $rolelist;
2849: if (ref($roles) eq 'ARRAY') {
2850: $rolelist = join(':',@{$roles});
2851: }
2852: my %personnel = ();
2853:
2854: my %servers = &get_servers($dom,'library');
2855: foreach my $tryserver (keys(%servers)) {
2856: %{$personnel{$tryserver}}=();
2857: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
2858: &escape($startdate).':'.
2859: &escape($enddate).':'.
2860: &escape($rolelist), $tryserver))) {
2861: my ($key,$value) = split(/\=/,$line,2);
2862: if (($key) && ($value)) {
2863: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
2864: }
2865: }
2866: }
2867: return %personnel;
2868: }
2869:
2870: # ----------------------------------------------------------- Check out an item
2871:
2872: sub get_first_access {
2873: my ($type,$argsymb)=@_;
2874: my ($symb,$courseid,$udom,$uname)=&whichuser();
2875: if ($argsymb) { $symb=$argsymb; }
2876: my ($map,$id,$res)=&decode_symb($symb);
2877: if ($type eq 'course') {
2878: $res='course';
2879: } elsif ($type eq 'map') {
2880: $res=&symbread($map);
2881: } else {
2882: $res=$symb;
2883: }
2884: my %times=&get('firstaccesstimes',["$courseid\0$res"],$udom,$uname);
2885: return $times{"$courseid\0$res"};
2886: }
2887:
2888: sub set_first_access {
2889: my ($type)=@_;
2890: my ($symb,$courseid,$udom,$uname)=&whichuser();
2891: my ($map,$id,$res)=&decode_symb($symb);
2892: if ($type eq 'course') {
2893: $res='course';
2894: } elsif ($type eq 'map') {
2895: $res=&symbread($map);
2896: } else {
2897: $res=$symb;
2898: }
2899: my $firstaccess=&get_first_access($type,$symb);
2900: if (!$firstaccess) {
2901: return &put('firstaccesstimes',{"$courseid\0$res"=>time},$udom,$uname);
2902: }
2903: return 'already_set';
2904: }
2905:
2906: sub checkout {
2907: my ($symb,$tuname,$tudom,$tcrsid)=@_;
2908: my $now=time;
2909: my $lonhost=$perlvar{'lonHostID'};
2910: my $infostr=&escape(
2911: 'CHECKOUTTOKEN&'.
2912: $tuname.'&'.
2913: $tudom.'&'.
2914: $tcrsid.'&'.
2915: $symb.'&'.
2916: $now.'&'.$ENV{'REMOTE_ADDR'});
2917: my $token=&reply('tmpput:'.$infostr,$lonhost);
2918: if ($token=~/^error\:/) {
2919: &logthis("<font color=\"blue\">WARNING: ".
2920: "Checkout tmpput failed ".$tudom.' - '.$tuname.' - '.$symb.
2921: "</font>");
2922: return '';
2923: }
2924:
2925: $token=~s/^(\d+)\_.*\_(\d+)$/$1\*$2\*$lonhost/;
2926: $token=~tr/a-z/A-Z/;
2927:
2928: my %infohash=('resource.0.outtoken' => $token,
2929: 'resource.0.checkouttime' => $now,
2930: 'resource.0.outremote' => $ENV{'REMOTE_ADDR'});
2931:
2932: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
2933: return '';
2934: } else {
2935: &logthis("<font color=\"blue\">WARNING: ".
2936: "Checkout cstore failed ".$tudom.' - '.$tuname.' - '.$symb.
2937: "</font>");
2938: }
2939:
2940: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
2941: &escape('Checkout '.$infostr.' - '.
2942: $token)) ne 'ok') {
2943: return '';
2944: } else {
2945: &logthis("<font color=\"blue\">WARNING: ".
2946: "Checkout log failed ".$tudom.' - '.$tuname.' - '.$symb.
2947: "</font>");
2948: }
2949: return $token;
2950: }
2951:
2952: # ------------------------------------------------------------ Check in an item
2953:
2954: sub checkin {
2955: my $token=shift;
2956: my $now=time;
2957: my ($ta,$tb,$lonhost)=split(/\*/,$token);
2958: $lonhost=~tr/A-Z/a-z/;
2959: my $dtoken=$ta.'_'.&hostname($lonhost).'_'.$tb;
2960: $dtoken=~s/\W/\_/g;
2961: my ($dummy,$tuname,$tudom,$tcrsid,$symb,$chtim,$rmaddr)=
2962: split(/\&/,&unescape(&reply('tmpget:'.$dtoken,$lonhost)));
2963:
2964: unless (($tuname) && ($tudom)) {
2965: &logthis('Check in '.$token.' ('.$dtoken.') failed');
2966: return '';
2967: }
2968:
2969: unless (&allowed('mgr',$tcrsid)) {
2970: &logthis('Check in '.$token.' ('.$dtoken.') unauthorized: '.
2971: $env{'user.name'}.' - '.$env{'user.domain'});
2972: return '';
2973: }
2974:
2975: my %infohash=('resource.0.intoken' => $token,
2976: 'resource.0.checkintime' => $now,
2977: 'resource.0.inremote' => $ENV{'REMOTE_ADDR'});
2978:
2979: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
2980: return '';
2981: }
2982:
2983: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
2984: &escape('Checkin - '.$token)) ne 'ok') {
2985: return '';
2986: }
2987:
2988: return ($symb,$tuname,$tudom,$tcrsid);
2989: }
2990:
2991: # --------------------------------------------- Set Expire Date for Spreadsheet
2992:
2993: sub expirespread {
2994: my ($uname,$udom,$stype,$usymb)=@_;
2995: my $cid=$env{'request.course.id'};
2996: if ($cid) {
2997: my $now=time;
2998: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
2999: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
3000: $env{'course.'.$cid.'.num'}.
3001: ':nohist_expirationdates:'.
3002: &escape($key).'='.$now,
3003: $env{'course.'.$cid.'.home'})
3004: }
3005: return 'ok';
3006: }
3007:
3008: # ----------------------------------------------------- Devalidate Spreadsheets
3009:
3010: sub devalidate {
3011: my ($symb,$uname,$udom)=@_;
3012: my $cid=$env{'request.course.id'};
3013: if ($cid) {
3014: # delete the stored spreadsheets for
3015: # - the student level sheet of this user in course's homespace
3016: # - the assessment level sheet for this resource
3017: # for this user in user's homespace
3018: # - current conditional state info
3019: my $key=$uname.':'.$udom.':';
3020: my $status=
3021: &del('nohist_calculatedsheets',
3022: [$key.'studentcalc:'],
3023: $env{'course.'.$cid.'.domain'},
3024: $env{'course.'.$cid.'.num'})
3025: .' '.
3026: &del('nohist_calculatedsheets_'.$cid,
3027: [$key.'assesscalc:'.$symb],$udom,$uname);
3028: unless ($status eq 'ok ok') {
3029: &logthis('Could not devalidate spreadsheet '.
3030: $uname.' at '.$udom.' for '.
3031: $symb.': '.$status);
3032: }
3033: &delenv('user.state.'.$cid);
3034: }
3035: }
3036:
3037: sub get_scalar {
3038: my ($string,$end) = @_;
3039: my $value;
3040: if ($$string =~ s/^([^&]*?)($end)/$2/) {
3041: $value = $1;
3042: } elsif ($$string =~ s/^([^&]*?)&//) {
3043: $value = $1;
3044: }
3045: return &unescape($value);
3046: }
3047:
3048: sub array2str {
3049: my (@array) = @_;
3050: my $result=&arrayref2str(\@array);
3051: $result=~s/^__ARRAY_REF__//;
3052: $result=~s/__END_ARRAY_REF__$//;
3053: return $result;
3054: }
3055:
3056: sub arrayref2str {
3057: my ($arrayref) = @_;
3058: my $result='__ARRAY_REF__';
3059: foreach my $elem (@$arrayref) {
3060: if(ref($elem) eq 'ARRAY') {
3061: $result.=&arrayref2str($elem).'&';
3062: } elsif(ref($elem) eq 'HASH') {
3063: $result.=&hashref2str($elem).'&';
3064: } elsif(ref($elem)) {
3065: #print("Got a ref of ".(ref($elem))." skipping.");
3066: } else {
3067: $result.=&escape($elem).'&';
3068: }
3069: }
3070: $result=~s/\&$//;
3071: $result .= '__END_ARRAY_REF__';
3072: return $result;
3073: }
3074:
3075: sub hash2str {
3076: my (%hash) = @_;
3077: my $result=&hashref2str(\%hash);
3078: $result=~s/^__HASH_REF__//;
3079: $result=~s/__END_HASH_REF__$//;
3080: return $result;
3081: }
3082:
3083: sub hashref2str {
3084: my ($hashref)=@_;
3085: my $result='__HASH_REF__';
3086: foreach my $key (sort(keys(%$hashref))) {
3087: if (ref($key) eq 'ARRAY') {
3088: $result.=&arrayref2str($key).'=';
3089: } elsif (ref($key) eq 'HASH') {
3090: $result.=&hashref2str($key).'=';
3091: } elsif (ref($key)) {
3092: $result.='=';
3093: #print("Got a ref of ".(ref($key))." skipping.");
3094: } else {
3095: if ($key) {$result.=&escape($key).'=';} else { last; }
3096: }
3097:
3098: if(ref($hashref->{$key}) eq 'ARRAY') {
3099: $result.=&arrayref2str($hashref->{$key}).'&';
3100: } elsif(ref($hashref->{$key}) eq 'HASH') {
3101: $result.=&hashref2str($hashref->{$key}).'&';
3102: } elsif(ref($hashref->{$key})) {
3103: $result.='&';
3104: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
3105: } else {
3106: $result.=&escape($hashref->{$key}).'&';
3107: }
3108: }
3109: $result=~s/\&$//;
3110: $result .= '__END_HASH_REF__';
3111: return $result;
3112: }
3113:
3114: sub str2hash {
3115: my ($string)=@_;
3116: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
3117: return %$hash;
3118: }
3119:
3120: sub str2hashref {
3121: my ($string) = @_;
3122:
3123: my %hash;
3124:
3125: if($string !~ /^__HASH_REF__/) {
3126: if (! ($string eq '' || !defined($string))) {
3127: $hash{'error'}='Not hash reference';
3128: }
3129: return (\%hash, $string);
3130: }
3131:
3132: $string =~ s/^__HASH_REF__//;
3133:
3134: while($string !~ /^__END_HASH_REF__/) {
3135: #key
3136: my $key='';
3137: if($string =~ /^__HASH_REF__/) {
3138: ($key, $string)=&str2hashref($string);
3139: if(defined($key->{'error'})) {
3140: $hash{'error'}='Bad data';
3141: return (\%hash, $string);
3142: }
3143: } elsif($string =~ /^__ARRAY_REF__/) {
3144: ($key, $string)=&str2arrayref($string);
3145: if($key->[0] eq 'Array reference error') {
3146: $hash{'error'}='Bad data';
3147: return (\%hash, $string);
3148: }
3149: } else {
3150: $string =~ s/^(.*?)=//;
3151: $key=&unescape($1);
3152: }
3153: $string =~ s/^=//;
3154:
3155: #value
3156: my $value='';
3157: if($string =~ /^__HASH_REF__/) {
3158: ($value, $string)=&str2hashref($string);
3159: if(defined($value->{'error'})) {
3160: $hash{'error'}='Bad data';
3161: return (\%hash, $string);
3162: }
3163: } elsif($string =~ /^__ARRAY_REF__/) {
3164: ($value, $string)=&str2arrayref($string);
3165: if($value->[0] eq 'Array reference error') {
3166: $hash{'error'}='Bad data';
3167: return (\%hash, $string);
3168: }
3169: } else {
3170: $value=&get_scalar(\$string,'__END_HASH_REF__');
3171: }
3172: $string =~ s/^&//;
3173:
3174: $hash{$key}=$value;
3175: }
3176:
3177: $string =~ s/^__END_HASH_REF__//;
3178:
3179: return (\%hash, $string);
3180: }
3181:
3182: sub str2array {
3183: my ($string)=@_;
3184: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
3185: return @$array;
3186: }
3187:
3188: sub str2arrayref {
3189: my ($string) = @_;
3190: my @array;
3191:
3192: if($string !~ /^__ARRAY_REF__/) {
3193: if (! ($string eq '' || !defined($string))) {
3194: $array[0]='Array reference error';
3195: }
3196: return (\@array, $string);
3197: }
3198:
3199: $string =~ s/^__ARRAY_REF__//;
3200:
3201: while($string !~ /^__END_ARRAY_REF__/) {
3202: my $value='';
3203: if($string =~ /^__HASH_REF__/) {
3204: ($value, $string)=&str2hashref($string);
3205: if(defined($value->{'error'})) {
3206: $array[0] ='Array reference error';
3207: return (\@array, $string);
3208: }
3209: } elsif($string =~ /^__ARRAY_REF__/) {
3210: ($value, $string)=&str2arrayref($string);
3211: if($value->[0] eq 'Array reference error') {
3212: $array[0] ='Array reference error';
3213: return (\@array, $string);
3214: }
3215: } else {
3216: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
3217: }
3218: $string =~ s/^&//;
3219:
3220: push(@array, $value);
3221: }
3222:
3223: $string =~ s/^__END_ARRAY_REF__//;
3224:
3225: return (\@array, $string);
3226: }
3227:
3228: # -------------------------------------------------------------------Temp Store
3229:
3230: sub tmpreset {
3231: my ($symb,$namespace,$domain,$stuname) = @_;
3232: if (!$symb) {
3233: $symb=&symbread();
3234: if (!$symb) { $symb= $env{'request.url'}; }
3235: }
3236: $symb=escape($symb);
3237:
3238: if (!$namespace) { $namespace=$env{'request.state'}; }
3239: $namespace=~s/\//\_/g;
3240: $namespace=~s/\W//g;
3241:
3242: if (!$domain) { $domain=$env{'user.domain'}; }
3243: if (!$stuname) { $stuname=$env{'user.name'}; }
3244: if ($domain eq 'public' && $stuname eq 'public') {
3245: $stuname=$ENV{'REMOTE_ADDR'};
3246: }
3247: my $path=$perlvar{'lonDaemons'}.'/tmp';
3248: my %hash;
3249: if (tie(%hash,'GDBM_File',
3250: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3251: &GDBM_WRCREAT(),0640)) {
3252: foreach my $key (keys %hash) {
3253: if ($key=~ /:$symb/) {
3254: delete($hash{$key});
3255: }
3256: }
3257: }
3258: }
3259:
3260: sub tmpstore {
3261: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3262:
3263: if (!$symb) {
3264: $symb=&symbread();
3265: if (!$symb) { $symb= $env{'request.url'}; }
3266: }
3267: $symb=escape($symb);
3268:
3269: if (!$namespace) {
3270: # I don't think we would ever want to store this for a course.
3271: # it seems this will only be used if we don't have a course.
3272: #$namespace=$env{'request.course.id'};
3273: #if (!$namespace) {
3274: $namespace=$env{'request.state'};
3275: #}
3276: }
3277: $namespace=~s/\//\_/g;
3278: $namespace=~s/\W//g;
3279: if (!$domain) { $domain=$env{'user.domain'}; }
3280: if (!$stuname) { $stuname=$env{'user.name'}; }
3281: if ($domain eq 'public' && $stuname eq 'public') {
3282: $stuname=$ENV{'REMOTE_ADDR'};
3283: }
3284: my $now=time;
3285: my %hash;
3286: my $path=$perlvar{'lonDaemons'}.'/tmp';
3287: if (tie(%hash,'GDBM_File',
3288: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3289: &GDBM_WRCREAT(),0640)) {
3290: $hash{"version:$symb"}++;
3291: my $version=$hash{"version:$symb"};
3292: my $allkeys='';
3293: foreach my $key (keys(%$storehash)) {
3294: $allkeys.=$key.':';
3295: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
3296: }
3297: $hash{"$version:$symb:timestamp"}=$now;
3298: $allkeys.='timestamp';
3299: $hash{"$version:keys:$symb"}=$allkeys;
3300: if (untie(%hash)) {
3301: return 'ok';
3302: } else {
3303: return "error:$!";
3304: }
3305: } else {
3306: return "error:$!";
3307: }
3308: }
3309:
3310: # -----------------------------------------------------------------Temp Restore
3311:
3312: sub tmprestore {
3313: my ($symb,$namespace,$domain,$stuname) = @_;
3314:
3315: if (!$symb) {
3316: $symb=&symbread();
3317: if (!$symb) { $symb= $env{'request.url'}; }
3318: }
3319: $symb=escape($symb);
3320:
3321: if (!$namespace) { $namespace=$env{'request.state'}; }
3322:
3323: if (!$domain) { $domain=$env{'user.domain'}; }
3324: if (!$stuname) { $stuname=$env{'user.name'}; }
3325: if ($domain eq 'public' && $stuname eq 'public') {
3326: $stuname=$ENV{'REMOTE_ADDR'};
3327: }
3328: my %returnhash;
3329: $namespace=~s/\//\_/g;
3330: $namespace=~s/\W//g;
3331: my %hash;
3332: my $path=$perlvar{'lonDaemons'}.'/tmp';
3333: if (tie(%hash,'GDBM_File',
3334: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3335: &GDBM_READER(),0640)) {
3336: my $version=$hash{"version:$symb"};
3337: $returnhash{'version'}=$version;
3338: my $scope;
3339: for ($scope=1;$scope<=$version;$scope++) {
3340: my $vkeys=$hash{"$scope:keys:$symb"};
3341: my @keys=split(/:/,$vkeys);
3342: my $key;
3343: $returnhash{"$scope:keys"}=$vkeys;
3344: foreach $key (@keys) {
3345: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3346: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3347: }
3348: }
3349: if (!(untie(%hash))) {
3350: return "error:$!";
3351: }
3352: } else {
3353: return "error:$!";
3354: }
3355: return %returnhash;
3356: }
3357:
3358: # ----------------------------------------------------------------------- Store
3359:
3360: sub store {
3361: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3362: my $home='';
3363:
3364: if ($stuname) { $home=&homeserver($stuname,$domain); }
3365:
3366: $symb=&symbclean($symb);
3367: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3368:
3369: if (!$domain) { $domain=$env{'user.domain'}; }
3370: if (!$stuname) { $stuname=$env{'user.name'}; }
3371:
3372: &devalidate($symb,$stuname,$domain);
3373:
3374: $symb=escape($symb);
3375: if (!$namespace) {
3376: unless ($namespace=$env{'request.course.id'}) {
3377: return '';
3378: }
3379: }
3380: if (!$home) { $home=$env{'user.home'}; }
3381:
3382: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3383: $$storehash{'host'}=$perlvar{'lonHostID'};
3384:
3385: my $namevalue='';
3386: foreach my $key (keys(%$storehash)) {
3387: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3388: }
3389: $namevalue=~s/\&$//;
3390: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
3391: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3392: }
3393:
3394: # -------------------------------------------------------------- Critical Store
3395:
3396: sub cstore {
3397: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3398: my $home='';
3399:
3400: if ($stuname) { $home=&homeserver($stuname,$domain); }
3401:
3402: $symb=&symbclean($symb);
3403: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3404:
3405: if (!$domain) { $domain=$env{'user.domain'}; }
3406: if (!$stuname) { $stuname=$env{'user.name'}; }
3407:
3408: &devalidate($symb,$stuname,$domain);
3409:
3410: $symb=escape($symb);
3411: if (!$namespace) {
3412: unless ($namespace=$env{'request.course.id'}) {
3413: return '';
3414: }
3415: }
3416: if (!$home) { $home=$env{'user.home'}; }
3417:
3418: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3419: $$storehash{'host'}=$perlvar{'lonHostID'};
3420:
3421: my $namevalue='';
3422: foreach my $key (keys(%$storehash)) {
3423: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3424: }
3425: $namevalue=~s/\&$//;
3426: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
3427: return critical
3428: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3429: }
3430:
3431: # --------------------------------------------------------------------- Restore
3432:
3433: sub restore {
3434: my ($symb,$namespace,$domain,$stuname) = @_;
3435: my $home='';
3436:
3437: if ($stuname) { $home=&homeserver($stuname,$domain); }
3438:
3439: if (!$symb) {
3440: unless ($symb=escape(&symbread())) { return ''; }
3441: } else {
3442: $symb=&escape(&symbclean($symb));
3443: }
3444: if (!$namespace) {
3445: unless ($namespace=$env{'request.course.id'}) {
3446: return '';
3447: }
3448: }
3449: if (!$domain) { $domain=$env{'user.domain'}; }
3450: if (!$stuname) { $stuname=$env{'user.name'}; }
3451: if (!$home) { $home=$env{'user.home'}; }
3452: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
3453:
3454: my %returnhash=();
3455: foreach my $line (split(/\&/,$answer)) {
3456: my ($name,$value)=split(/\=/,$line);
3457: $returnhash{&unescape($name)}=&thaw_unescape($value);
3458: }
3459: my $version;
3460: for ($version=1;$version<=$returnhash{'version'};$version++) {
3461: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
3462: $returnhash{$item}=$returnhash{$version.':'.$item};
3463: }
3464: }
3465: return %returnhash;
3466: }
3467:
3468: # ---------------------------------------------------------- Course Description
3469:
3470: sub coursedescription {
3471: my ($courseid,$args)=@_;
3472: $courseid=~s/^\///;
3473: $courseid=~s/\_/\//g;
3474: my ($cdomain,$cnum)=split(/\//,$courseid);
3475: my $chome=&homeserver($cnum,$cdomain);
3476: my $normalid=$cdomain.'_'.$cnum;
3477: # need to always cache even if we get errors otherwise we keep
3478: # trying and trying and trying to get the course description.
3479: my %envhash=();
3480: my %returnhash=();
3481:
3482: my $expiretime=600;
3483: if ($env{'request.course.id'} eq $normalid) {
3484: $expiretime=120;
3485: }
3486:
3487: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
3488: if (!$args->{'freshen_cache'}
3489: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
3490: foreach my $key (keys(%env)) {
3491: next if ($key !~ /^\Q$prefix\E(.*)/);
3492: my ($setting) = $1;
3493: $returnhash{$setting} = $env{$key};
3494: }
3495: return %returnhash;
3496: }
3497:
3498: # get the data agin
3499: if (!$args->{'one_time'}) {
3500: $envhash{'course.'.$normalid.'.last_cache'}=time;
3501: }
3502:
3503: if ($chome ne 'no_host') {
3504: %returnhash=&dump('environment',$cdomain,$cnum);
3505: if (!exists($returnhash{'con_lost'})) {
3506: $returnhash{'home'}= $chome;
3507: $returnhash{'domain'} = $cdomain;
3508: $returnhash{'num'} = $cnum;
3509: if (!defined($returnhash{'type'})) {
3510: $returnhash{'type'} = 'Course';
3511: }
3512: while (my ($name,$value) = each %returnhash) {
3513: $envhash{'course.'.$normalid.'.'.$name}=$value;
3514: }
3515: $returnhash{'url'}=&clutter($returnhash{'url'});
3516: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
3517: $env{'user.name'}.'_'.$cdomain.'_'.$cnum;
3518: $envhash{'course.'.$normalid.'.home'}=$chome;
3519: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
3520: $envhash{'course.'.$normalid.'.num'}=$cnum;
3521: }
3522: }
3523: if (!$args->{'one_time'}) {
3524: &appenv(\%envhash);
3525: }
3526: return %returnhash;
3527: }
3528:
3529: # -------------------------------------------------See if a user is privileged
3530:
3531: sub privileged {
3532: my ($username,$domain)=@_;
3533: my $rolesdump=&reply("dump:$domain:$username:roles",
3534: &homeserver($username,$domain));
3535: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return 0; }
3536: my $now=time;
3537: if ($rolesdump ne '') {
3538: foreach my $entry (split(/&/,$rolesdump)) {
3539: if ($entry!~/^rolesdef_/) {
3540: my ($area,$role)=split(/=/,$entry);
3541: $area=~s/\_\w\w$//;
3542: my ($trole,$tend,$tstart)=split(/_/,$role);
3543: if (($trole eq 'dc') || ($trole eq 'su')) {
3544: my $active=1;
3545: if ($tend) {
3546: if ($tend<$now) { $active=0; }
3547: }
3548: if ($tstart) {
3549: if ($tstart>$now) { $active=0; }
3550: }
3551: if ($active) { return 1; }
3552: }
3553: }
3554: }
3555: }
3556: return 0;
3557: }
3558:
3559: # -------------------------------------------------------- Get user privileges
3560:
3561: sub rolesinit {
3562: my ($domain,$username,$authhost)=@_;
3563: my $rolesdump=reply("dump:$domain:$username:roles",$authhost);
3564: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return ''; }
3565: my %allroles=();
3566: my %allgroups=();
3567: my $now=time;
3568: my %userroles = ('user.login.time' => $now);
3569: my $group_privs;
3570:
3571: if ($rolesdump ne '') {
3572: foreach my $entry (split(/&/,$rolesdump)) {
3573: if ($entry!~/^rolesdef_/) {
3574: my ($area,$role)=split(/=/,$entry);
3575: $area=~s/\_\w\w$//;
3576: my ($trole,$tend,$tstart,$group_privs);
3577: if ($role=~/^cr/) {
3578: if ($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
3579: ($trole,my $trest)=($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|);
3580: ($tend,$tstart)=split('_',$trest);
3581: } else {
3582: $trole=$role;
3583: }
3584: } elsif ($role =~ m|^gr/|) {
3585: ($trole,$tend,$tstart) = split(/_/,$role);
3586: ($trole,$group_privs) = split(/\//,$trole);
3587: $group_privs = &unescape($group_privs);
3588: } else {
3589: ($trole,$tend,$tstart)=split(/_/,$role);
3590: }
3591: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
3592: $username);
3593: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
3594: if (($tend!=0) && ($tend<$now)) { $trole=''; }
3595: if (($tstart!=0) && ($tstart>$now)) { $trole=''; }
3596: if (($area ne '') && ($trole ne '')) {
3597: my $spec=$trole.'.'.$area;
3598: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
3599: if ($trole =~ /^cr\//) {
3600: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
3601: } elsif ($trole eq 'gr') {
3602: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
3603: } else {
3604: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
3605: }
3606: }
3607: }
3608: }
3609: my ($author,$adv) = &set_userprivs(\%userroles,\%allroles,\%allgroups);
3610: $userroles{'user.adv'} = $adv;
3611: $userroles{'user.author'} = $author;
3612: $env{'user.adv'}=$adv;
3613: }
3614: return \%userroles;
3615: }
3616:
3617: sub set_arearole {
3618: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
3619: # log the associated role with the area
3620: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
3621: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
3622: }
3623:
3624: sub custom_roleprivs {
3625: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
3626: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
3627: my $homsvr=homeserver($rauthor,$rdomain);
3628: if (&hostname($homsvr) ne '') {
3629: my ($rdummy,$roledef)=
3630: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
3631: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
3632: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
3633: if (defined($syspriv)) {
3634: $$allroles{'cm./'}.=':'.$syspriv;
3635: $$allroles{$spec.'./'}.=':'.$syspriv;
3636: }
3637: if ($tdomain ne '') {
3638: if (defined($dompriv)) {
3639: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
3640: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
3641: }
3642: if (($trest ne '') && (defined($coursepriv))) {
3643: $$allroles{'cm.'.$area}.=':'.$coursepriv;
3644: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
3645: }
3646: }
3647: }
3648: }
3649: }
3650:
3651: sub group_roleprivs {
3652: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
3653: my $access = 1;
3654: my $now = time;
3655: if (($tend!=0) && ($tend<$now)) { $access = 0; }
3656: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
3657: if ($access) {
3658: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
3659: $$allgroups{$course}{$group} .=':'.$group_privs;
3660: }
3661: }
3662:
3663: sub standard_roleprivs {
3664: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
3665: if (defined($pr{$trole.':s'})) {
3666: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
3667: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
3668: }
3669: if ($tdomain ne '') {
3670: if (defined($pr{$trole.':d'})) {
3671: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
3672: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
3673: }
3674: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
3675: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
3676: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
3677: }
3678: }
3679: }
3680:
3681: sub set_userprivs {
3682: my ($userroles,$allroles,$allgroups) = @_;
3683: my $author=0;
3684: my $adv=0;
3685: my %grouproles = ();
3686: if (keys(%{$allgroups}) > 0) {
3687: foreach my $role (keys %{$allroles}) {
3688: my ($trole,$area,$sec,$extendedarea);
3689: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
3690: $trole = $1;
3691: $area = $2;
3692: $sec = $3;
3693: $extendedarea = $area.$sec;
3694: if (exists($$allgroups{$area})) {
3695: foreach my $group (keys(%{$$allgroups{$area}})) {
3696: my $spec = $trole.'.'.$extendedarea;
3697: $grouproles{$spec.'.'.$area.'/'.$group} =
3698: $$allgroups{$area}{$group};
3699: }
3700: }
3701: }
3702: }
3703: }
3704: foreach my $group (keys(%grouproles)) {
3705: $$allroles{$group} = $grouproles{$group};
3706: }
3707: foreach my $role (keys(%{$allroles})) {
3708: my %thesepriv;
3709: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
3710: foreach my $item (split(/:/,$$allroles{$role})) {
3711: if ($item ne '') {
3712: my ($privilege,$restrictions)=split(/&/,$item);
3713: if ($restrictions eq '') {
3714: $thesepriv{$privilege}='F';
3715: } elsif ($thesepriv{$privilege} ne 'F') {
3716: $thesepriv{$privilege}.=$restrictions;
3717: }
3718: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
3719: }
3720: }
3721: my $thesestr='';
3722: foreach my $priv (keys(%thesepriv)) {
3723: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
3724: }
3725: $userroles->{'user.priv.'.$role} = $thesestr;
3726: }
3727: return ($author,$adv);
3728: }
3729:
3730: # --------------------------------------------------------------- get interface
3731:
3732: sub get {
3733: my ($namespace,$storearr,$udomain,$uname)=@_;
3734: my $items='';
3735: foreach my $item (@$storearr) {
3736: $items.=&escape($item).'&';
3737: }
3738: $items=~s/\&$//;
3739: if (!$udomain) { $udomain=$env{'user.domain'}; }
3740: if (!$uname) { $uname=$env{'user.name'}; }
3741: my $uhome=&homeserver($uname,$udomain);
3742:
3743: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
3744: my @pairs=split(/\&/,$rep);
3745: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
3746: return @pairs;
3747: }
3748: my %returnhash=();
3749: my $i=0;
3750: foreach my $item (@$storearr) {
3751: $returnhash{$item}=&thaw_unescape($pairs[$i]);
3752: $i++;
3753: }
3754: return %returnhash;
3755: }
3756:
3757: # --------------------------------------------------------------- del interface
3758:
3759: sub del {
3760: my ($namespace,$storearr,$udomain,$uname)=@_;
3761: my $items='';
3762: foreach my $item (@$storearr) {
3763: $items.=&escape($item).'&';
3764: }
3765: $items=~s/\&$//;
3766: if (!$udomain) { $udomain=$env{'user.domain'}; }
3767: if (!$uname) { $uname=$env{'user.name'}; }
3768: my $uhome=&homeserver($uname,$udomain);
3769:
3770: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
3771: }
3772:
3773: # -------------------------------------------------------------- dump interface
3774:
3775: sub dump {
3776: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
3777: if (!$udomain) { $udomain=$env{'user.domain'}; }
3778: if (!$uname) { $uname=$env{'user.name'}; }
3779: my $uhome=&homeserver($uname,$udomain);
3780: if ($regexp) {
3781: $regexp=&escape($regexp);
3782: } else {
3783: $regexp='.';
3784: }
3785: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
3786: my @pairs=split(/\&/,$rep);
3787: my %returnhash=();
3788: foreach my $item (@pairs) {
3789: my ($key,$value)=split(/=/,$item,2);
3790: $key = &unescape($key);
3791: next if ($key =~ /^error: 2 /);
3792: $returnhash{$key}=&thaw_unescape($value);
3793: }
3794: return %returnhash;
3795: }
3796:
3797: # --------------------------------------------------------- dumpstore interface
3798:
3799: sub dumpstore {
3800: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
3801: if (!$udomain) { $udomain=$env{'user.domain'}; }
3802: if (!$uname) { $uname=$env{'user.name'}; }
3803: my $uhome=&homeserver($uname,$udomain);
3804: if ($regexp) {
3805: $regexp=&escape($regexp);
3806: } else {
3807: $regexp='.';
3808: }
3809: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
3810: my @pairs=split(/\&/,$rep);
3811: my %returnhash=();
3812: foreach my $item (@pairs) {
3813: my ($key,$value)=split(/=/,$item,2);
3814: next if ($key =~ /^error: 2 /);
3815: $returnhash{$key}=&thaw_unescape($value);
3816: }
3817: return %returnhash;
3818: }
3819:
3820: # -------------------------------------------------------------- keys interface
3821:
3822: sub getkeys {
3823: my ($namespace,$udomain,$uname)=@_;
3824: if (!$udomain) { $udomain=$env{'user.domain'}; }
3825: if (!$uname) { $uname=$env{'user.name'}; }
3826: my $uhome=&homeserver($uname,$udomain);
3827: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
3828: my @keyarray=();
3829: foreach my $key (split(/\&/,$rep)) {
3830: next if ($key =~ /^error: 2 /);
3831: push(@keyarray,&unescape($key));
3832: }
3833: return @keyarray;
3834: }
3835:
3836: # --------------------------------------------------------------- currentdump
3837: sub currentdump {
3838: my ($courseid,$sdom,$sname)=@_;
3839: $courseid = $env{'request.course.id'} if (! defined($courseid));
3840: $sdom = $env{'user.domain'} if (! defined($sdom));
3841: $sname = $env{'user.name'} if (! defined($sname));
3842: my $uhome = &homeserver($sname,$sdom);
3843: my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
3844: return if ($rep =~ /^(error:|no_such_host)/);
3845: #
3846: my %returnhash=();
3847: #
3848: if ($rep eq "unknown_cmd") {
3849: # an old lond will not know currentdump
3850: # Do a dump and make it look like a currentdump
3851: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
3852: return if ($tmp[0] =~ /^(error:|no_such_host)/);
3853: my %hash = @tmp;
3854: @tmp=();
3855: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
3856: } else {
3857: my @pairs=split(/\&/,$rep);
3858: foreach my $pair (@pairs) {
3859: my ($key,$value)=split(/=/,$pair,2);
3860: my ($symb,$param) = split(/:/,$key);
3861: $returnhash{&unescape($symb)}->{&unescape($param)} =
3862: &thaw_unescape($value);
3863: }
3864: }
3865: return %returnhash;
3866: }
3867:
3868: sub convert_dump_to_currentdump{
3869: my %hash = %{shift()};
3870: my %returnhash;
3871: # Code ripped from lond, essentially. The only difference
3872: # here is the unescaping done by lonnet::dump(). Conceivably
3873: # we might run in to problems with parameter names =~ /^v\./
3874: while (my ($key,$value) = each(%hash)) {
3875: my ($v,$symb,$param) = split(/:/,$key);
3876: $symb = &unescape($symb);
3877: $param = &unescape($param);
3878: next if ($v eq 'version' || $symb eq 'keys');
3879: next if (exists($returnhash{$symb}) &&
3880: exists($returnhash{$symb}->{$param}) &&
3881: $returnhash{$symb}->{'v.'.$param} > $v);
3882: $returnhash{$symb}->{$param}=$value;
3883: $returnhash{$symb}->{'v.'.$param}=$v;
3884: }
3885: #
3886: # Remove all of the keys in the hashes which keep track of
3887: # the version of the parameter.
3888: while (my ($symb,$param_hash) = each(%returnhash)) {
3889: # use a foreach because we are going to delete from the hash.
3890: foreach my $key (keys(%$param_hash)) {
3891: delete($param_hash->{$key}) if ($key =~ /^v\./);
3892: }
3893: }
3894: return \%returnhash;
3895: }
3896:
3897: # ------------------------------------------------------ critical inc interface
3898:
3899: sub cinc {
3900: return &inc(@_,'critical');
3901: }
3902:
3903: # --------------------------------------------------------------- inc interface
3904:
3905: sub inc {
3906: my ($namespace,$store,$udomain,$uname,$critical) = @_;
3907: if (!$udomain) { $udomain=$env{'user.domain'}; }
3908: if (!$uname) { $uname=$env{'user.name'}; }
3909: my $uhome=&homeserver($uname,$udomain);
3910: my $items='';
3911: if (! ref($store)) {
3912: # got a single value, so use that instead
3913: $items = &escape($store).'=&';
3914: } elsif (ref($store) eq 'SCALAR') {
3915: $items = &escape($$store).'=&';
3916: } elsif (ref($store) eq 'ARRAY') {
3917: $items = join('=&',map {&escape($_);} @{$store});
3918: } elsif (ref($store) eq 'HASH') {
3919: while (my($key,$value) = each(%{$store})) {
3920: $items.= &escape($key).'='.&escape($value).'&';
3921: }
3922: }
3923: $items=~s/\&$//;
3924: if ($critical) {
3925: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
3926: } else {
3927: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
3928: }
3929: }
3930:
3931: # --------------------------------------------------------------- put interface
3932:
3933: sub put {
3934: my ($namespace,$storehash,$udomain,$uname)=@_;
3935: if (!$udomain) { $udomain=$env{'user.domain'}; }
3936: if (!$uname) { $uname=$env{'user.name'}; }
3937: my $uhome=&homeserver($uname,$udomain);
3938: my $items='';
3939: foreach my $item (keys(%$storehash)) {
3940: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
3941: }
3942: $items=~s/\&$//;
3943: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
3944: }
3945:
3946: # ------------------------------------------------------------ newput interface
3947:
3948: sub newput {
3949: my ($namespace,$storehash,$udomain,$uname)=@_;
3950: if (!$udomain) { $udomain=$env{'user.domain'}; }
3951: if (!$uname) { $uname=$env{'user.name'}; }
3952: my $uhome=&homeserver($uname,$udomain);
3953: my $items='';
3954: foreach my $key (keys(%$storehash)) {
3955: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3956: }
3957: $items=~s/\&$//;
3958: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
3959: }
3960:
3961: # --------------------------------------------------------- putstore interface
3962:
3963: sub putstore {
3964: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
3965: if (!$udomain) { $udomain=$env{'user.domain'}; }
3966: if (!$uname) { $uname=$env{'user.name'}; }
3967: my $uhome=&homeserver($uname,$udomain);
3968: my $items='';
3969: foreach my $key (keys(%$storehash)) {
3970: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
3971: }
3972: $items=~s/\&$//;
3973: my $esc_symb=&escape($symb);
3974: my $esc_v=&escape($version);
3975: my $reply =
3976: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
3977: $uhome);
3978: if ($reply eq 'unknown_cmd') {
3979: # gfall back to way things use to be done
3980: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
3981: $uname);
3982: }
3983: return $reply;
3984: }
3985:
3986: sub old_putstore {
3987: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
3988: if (!$udomain) { $udomain=$env{'user.domain'}; }
3989: if (!$uname) { $uname=$env{'user.name'}; }
3990: my $uhome=&homeserver($uname,$udomain);
3991: my %newstorehash;
3992: foreach my $item (keys(%$storehash)) {
3993: my $key = $version.':'.&escape($symb).':'.$item;
3994: $newstorehash{$key} = $storehash->{$item};
3995: }
3996: my $items='';
3997: my %allitems = ();
3998: foreach my $item (keys(%newstorehash)) {
3999: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
4000: my $key = $1.':keys:'.$2;
4001: $allitems{$key} .= $3.':';
4002: }
4003: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
4004: }
4005: foreach my $item (keys(%allitems)) {
4006: $allitems{$item} =~ s/\:$//;
4007: $items.= $item.'='.$allitems{$item}.'&';
4008: }
4009: $items=~s/\&$//;
4010: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
4011: }
4012:
4013: # ------------------------------------------------------ critical put interface
4014:
4015: sub cput {
4016: my ($namespace,$storehash,$udomain,$uname)=@_;
4017: if (!$udomain) { $udomain=$env{'user.domain'}; }
4018: if (!$uname) { $uname=$env{'user.name'}; }
4019: my $uhome=&homeserver($uname,$udomain);
4020: my $items='';
4021: foreach my $item (keys(%$storehash)) {
4022: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4023: }
4024: $items=~s/\&$//;
4025: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
4026: }
4027:
4028: # -------------------------------------------------------------- eget interface
4029:
4030: sub eget {
4031: my ($namespace,$storearr,$udomain,$uname)=@_;
4032: my $items='';
4033: foreach my $item (@$storearr) {
4034: $items.=&escape($item).'&';
4035: }
4036: $items=~s/\&$//;
4037: if (!$udomain) { $udomain=$env{'user.domain'}; }
4038: if (!$uname) { $uname=$env{'user.name'}; }
4039: my $uhome=&homeserver($uname,$udomain);
4040: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
4041: my @pairs=split(/\&/,$rep);
4042: my %returnhash=();
4043: my $i=0;
4044: foreach my $item (@$storearr) {
4045: $returnhash{$item}=&thaw_unescape($pairs[$i]);
4046: $i++;
4047: }
4048: return %returnhash;
4049: }
4050:
4051: # ------------------------------------------------------------ tmpput interface
4052: sub tmpput {
4053: my ($storehash,$server,$context)=@_;
4054: my $items='';
4055: foreach my $item (keys(%$storehash)) {
4056: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
4057: }
4058: $items=~s/\&$//;
4059: if (defined($context)) {
4060: $items .= ':'.&escape($context);
4061: }
4062: return &reply("tmpput:$items",$server);
4063: }
4064:
4065: # ------------------------------------------------------------ tmpget interface
4066: sub tmpget {
4067: my ($token,$server)=@_;
4068: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
4069: my $rep=&reply("tmpget:$token",$server);
4070: my %returnhash;
4071: foreach my $item (split(/\&/,$rep)) {
4072: my ($key,$value)=split(/=/,$item);
4073: next if ($key =~ /^error: 2 /);
4074: $returnhash{&unescape($key)}=&thaw_unescape($value);
4075: }
4076: return %returnhash;
4077: }
4078:
4079: # ------------------------------------------------------------ tmpget interface
4080: sub tmpdel {
4081: my ($token,$server)=@_;
4082: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
4083: return &reply("tmpdel:$token",$server);
4084: }
4085:
4086: # -------------------------------------------------- portfolio access checking
4087:
4088: sub portfolio_access {
4089: my ($requrl) = @_;
4090: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
4091: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
4092: if ($result) {
4093: my %setters;
4094: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4095: my ($startblock,$endblock) =
4096: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
4097: if ($startblock && $endblock) {
4098: return 'B';
4099: }
4100: } else {
4101: my ($startblock,$endblock) =
4102: &Apache::loncommon::blockcheck(\%setters,'port');
4103: if ($startblock && $endblock) {
4104: return 'B';
4105: }
4106: }
4107: }
4108: if ($result eq 'ok') {
4109: return 'F';
4110: } elsif ($result =~ /^[^:]+:guest_/) {
4111: return 'A';
4112: }
4113: return '';
4114: }
4115:
4116: sub get_portfolio_access {
4117: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
4118:
4119: if (!ref($access_hash)) {
4120: my $current_perms = &get_portfile_permissions($udom,$unum);
4121: my %access_controls = &get_access_controls($current_perms,$group,
4122: $file_name);
4123: $access_hash = $access_controls{$file_name};
4124: }
4125:
4126: my ($public,$guest,@domains,@users,@courses,@groups);
4127: my $now = time;
4128: if (ref($access_hash) eq 'HASH') {
4129: foreach my $key (keys(%{$access_hash})) {
4130: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
4131: if ($start > $now) {
4132: next;
4133: }
4134: if ($end && $end<$now) {
4135: next;
4136: }
4137: if ($scope eq 'public') {
4138: $public = $key;
4139: last;
4140: } elsif ($scope eq 'guest') {
4141: $guest = $key;
4142: } elsif ($scope eq 'domains') {
4143: push(@domains,$key);
4144: } elsif ($scope eq 'users') {
4145: push(@users,$key);
4146: } elsif ($scope eq 'course') {
4147: push(@courses,$key);
4148: } elsif ($scope eq 'group') {
4149: push(@groups,$key);
4150: }
4151: }
4152: if ($public) {
4153: return 'ok';
4154: }
4155: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4156: if ($guest) {
4157: return $guest;
4158: }
4159: } else {
4160: if (@domains > 0) {
4161: foreach my $domkey (@domains) {
4162: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
4163: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
4164: return 'ok';
4165: }
4166: }
4167: }
4168: }
4169: if (@users > 0) {
4170: foreach my $userkey (@users) {
4171: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
4172: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
4173: if (ref($item) eq 'HASH') {
4174: if (($item->{'uname'} eq $env{'user.name'}) &&
4175: ($item->{'udom'} eq $env{'user.domain'})) {
4176: return 'ok';
4177: }
4178: }
4179: }
4180: }
4181: }
4182: }
4183: my %roleshash;
4184: my @courses_and_groups = @courses;
4185: push(@courses_and_groups,@groups);
4186: if (@courses_and_groups > 0) {
4187: my (%allgroups,%allroles);
4188: my ($start,$end,$role,$sec,$group);
4189: foreach my $envkey (%env) {
4190: if ($envkey =~ m-^user\.role\.(gr|cc|in|ta|ep|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
4191: my $cid = $2.'_'.$3;
4192: if ($1 eq 'gr') {
4193: $group = $4;
4194: $allgroups{$cid}{$group} = $env{$envkey};
4195: } else {
4196: if ($4 eq '') {
4197: $sec = 'none';
4198: } else {
4199: $sec = $4;
4200: }
4201: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4202: }
4203: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
4204: my $cid = $2.'_'.$3;
4205: if ($4 eq '') {
4206: $sec = 'none';
4207: } else {
4208: $sec = $4;
4209: }
4210: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4211: }
4212: }
4213: if (keys(%allroles) == 0) {
4214: return;
4215: }
4216: foreach my $key (@courses_and_groups) {
4217: my %content = %{$$access_hash{$key}};
4218: my $cnum = $content{'number'};
4219: my $cdom = $content{'domain'};
4220: my $cid = $cdom.'_'.$cnum;
4221: if (!exists($allroles{$cid})) {
4222: next;
4223: }
4224: foreach my $role_id (keys(%{$content{'roles'}})) {
4225: my @sections = @{$content{'roles'}{$role_id}{'section'}};
4226: my @groups = @{$content{'roles'}{$role_id}{'group'}};
4227: my @status = @{$content{'roles'}{$role_id}{'access'}};
4228: my @roles = @{$content{'roles'}{$role_id}{'role'}};
4229: foreach my $role (keys(%{$allroles{$cid}})) {
4230: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
4231: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
4232: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
4233: if (grep/^all$/,@sections) {
4234: return 'ok';
4235: } else {
4236: if (grep/^$sec$/,@sections) {
4237: return 'ok';
4238: }
4239: }
4240: }
4241: }
4242: if (keys(%{$allgroups{$cid}}) == 0) {
4243: if (grep/^none$/,@groups) {
4244: return 'ok';
4245: }
4246: } else {
4247: if (grep/^all$/,@groups) {
4248: return 'ok';
4249: }
4250: foreach my $group (keys(%{$allgroups{$cid}})) {
4251: if (grep/^$group$/,@groups) {
4252: return 'ok';
4253: }
4254: }
4255: }
4256: }
4257: }
4258: }
4259: }
4260: }
4261: if ($guest) {
4262: return $guest;
4263: }
4264: }
4265: }
4266: return;
4267: }
4268:
4269: sub course_group_datechecker {
4270: my ($dates,$now,$status) = @_;
4271: my ($start,$end) = split(/\./,$dates);
4272: if (!$start && !$end) {
4273: return 'ok';
4274: }
4275: if (grep/^active$/,@{$status}) {
4276: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
4277: return 'ok';
4278: }
4279: }
4280: if (grep/^previous$/,@{$status}) {
4281: if ($end > $now ) {
4282: return 'ok';
4283: }
4284: }
4285: if (grep/^future$/,@{$status}) {
4286: if ($start > $now) {
4287: return 'ok';
4288: }
4289: }
4290: return;
4291: }
4292:
4293: sub parse_portfolio_url {
4294: my ($url) = @_;
4295:
4296: my ($type,$udom,$unum,$group,$file_name);
4297:
4298: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
4299: $type = 1;
4300: $udom = $1;
4301: $unum = $2;
4302: $file_name = $3;
4303: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
4304: $type = 2;
4305: $udom = $1;
4306: $unum = $2;
4307: $group = $3;
4308: $file_name = $3.'/'.$4;
4309: }
4310: if (wantarray) {
4311: return ($type,$udom,$unum,$file_name,$group);
4312: }
4313: return $type;
4314: }
4315:
4316: sub is_portfolio_url {
4317: my ($url) = @_;
4318: return scalar(&parse_portfolio_url($url));
4319: }
4320:
4321: sub is_portfolio_file {
4322: my ($file) = @_;
4323: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
4324: return 1;
4325: }
4326: return;
4327: }
4328:
4329:
4330: # ---------------------------------------------- Custom access rule evaluation
4331:
4332: sub customaccess {
4333: my ($priv,$uri)=@_;
4334: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
4335: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
4336: $udom = &LONCAPA::clean_domain($udom);
4337: $ucrs = &LONCAPA::clean_username($ucrs);
4338: my $access=0;
4339: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
4340: my ($effect,$realm,$role,$type)=split(/\:/,$right);
4341: if ($type eq 'user') {
4342: foreach my $scope (split(/\s*\,\s*/,$realm)) {
4343: my ($tdom,$tuname)=split(m{/},$scope);
4344: if ($tdom) {
4345: if ($tdom ne $env{'user.domain'}) { next; }
4346: }
4347: if ($tuname) {
4348: if ($tuname ne $env{'user.name'}) { next; }
4349: }
4350: $access=($effect eq 'allow');
4351: last;
4352: }
4353: } else {
4354: if ($role) {
4355: if ($role ne $urole) { next; }
4356: }
4357: foreach my $scope (split(/\s*\,\s*/,$realm)) {
4358: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
4359: if ($tdom) {
4360: if ($tdom ne $udom) { next; }
4361: }
4362: if ($tcrs) {
4363: if ($tcrs ne $ucrs) { next; }
4364: }
4365: if ($tsec) {
4366: if ($tsec ne $usec) { next; }
4367: }
4368: $access=($effect eq 'allow');
4369: last;
4370: }
4371: if ($realm eq '' && $role eq '') {
4372: $access=($effect eq 'allow');
4373: }
4374: }
4375: }
4376: return $access;
4377: }
4378:
4379: # ------------------------------------------------- Check for a user privilege
4380:
4381: sub allowed {
4382: my ($priv,$uri,$symb,$role)=@_;
4383: my $ver_orguri=$uri;
4384: $uri=&deversion($uri);
4385: my $orguri=$uri;
4386: $uri=&declutter($uri);
4387:
4388: if ($priv eq 'evb') {
4389: # Evade communication block restrictions for specified role in a course
4390: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
4391: return $1;
4392: } else {
4393: return;
4394: }
4395: }
4396:
4397: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
4398: # Free bre access to adm and meta resources
4399: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
4400: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
4401: && ($priv eq 'bre')) {
4402: return 'F';
4403: }
4404:
4405: # Free bre access to user's own portfolio contents
4406: my ($space,$domain,$name,@dir)=split('/',$uri);
4407: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
4408: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
4409: my %setters;
4410: my ($startblock,$endblock) =
4411: &Apache::loncommon::blockcheck(\%setters,'port');
4412: if ($startblock && $endblock) {
4413: return 'B';
4414: } else {
4415: return 'F';
4416: }
4417: }
4418:
4419: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
4420: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
4421: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
4422: if (exists($env{'request.course.id'})) {
4423: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4424: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4425: if (($domain eq $cdom) && ($name eq $cnum)) {
4426: my $courseprivid=$env{'request.course.id'};
4427: $courseprivid=~s/\_/\//;
4428: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
4429: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
4430: return $1;
4431: } else {
4432: if ($env{'request.course.sec'}) {
4433: $courseprivid.='/'.$env{'request.course.sec'};
4434: }
4435: if ($env{'user.priv.'.$env{'request.role'}.'./'.
4436: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
4437: return $2;
4438: }
4439: }
4440: }
4441: }
4442: }
4443:
4444: # Free bre to public access
4445:
4446: if ($priv eq 'bre') {
4447: my $copyright=&metadata($uri,'copyright');
4448: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
4449: return 'F';
4450: }
4451: if ($copyright eq 'priv') {
4452: $uri=~/([^\/]+)\/([^\/]+)\//;
4453: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
4454: return '';
4455: }
4456: }
4457: if ($copyright eq 'domain') {
4458: $uri=~/([^\/]+)\/([^\/]+)\//;
4459: unless (($env{'user.domain'} eq $1) ||
4460: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
4461: return '';
4462: }
4463: }
4464: if ($env{'request.role'}=~ /li\.\//) {
4465: # Library role, so allow browsing of resources in this domain.
4466: return 'F';
4467: }
4468: if ($copyright eq 'custom') {
4469: unless (&customaccess($priv,$uri)) { return ''; }
4470: }
4471: }
4472: # Domain coordinator is trying to create a course
4473: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
4474: # uri is the requested domain in this case.
4475: # comparison to 'request.role.domain' shows if the user has selected
4476: # a role of dc for the domain in question.
4477: return 'F' if ($uri eq $env{'request.role.domain'});
4478: }
4479:
4480: my $thisallowed='';
4481: my $statecond=0;
4482: my $courseprivid='';
4483:
4484: # Course
4485:
4486: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
4487: $thisallowed.=$1;
4488: }
4489:
4490: # Domain
4491:
4492: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
4493: =~/\Q$priv\E\&([^\:]*)/) {
4494: $thisallowed.=$1;
4495: }
4496:
4497: # Course: uri itself is a course
4498: my $courseuri=$uri;
4499: $courseuri=~s/\_(\d)/\/$1/;
4500: $courseuri=~s/^([^\/])/\/$1/;
4501:
4502: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
4503: =~/\Q$priv\E\&([^\:]*)/) {
4504: $thisallowed.=$1;
4505: }
4506:
4507: # URI is an uploaded document for this course, default permissions don't matter
4508: # not allowing 'edit' access (editupload) to uploaded course docs
4509: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
4510: $thisallowed='';
4511: my ($match)=&is_on_map($uri);
4512: if ($match) {
4513: if ($env{'user.priv.'.$env{'request.role'}.'./'}
4514: =~/\Q$priv\E\&([^\:]*)/) {
4515: $thisallowed.=$1;
4516: }
4517: } else {
4518: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
4519: if ($refuri) {
4520: if ($refuri =~ m|^/adm/|) {
4521: $thisallowed='F';
4522: } else {
4523: $refuri=&declutter($refuri);
4524: my ($match) = &is_on_map($refuri);
4525: if ($match) {
4526: $thisallowed='F';
4527: }
4528: }
4529: }
4530: }
4531: }
4532:
4533: if ($priv eq 'bre'
4534: && $thisallowed ne 'F'
4535: && $thisallowed ne '2'
4536: && &is_portfolio_url($uri)) {
4537: $thisallowed = &portfolio_access($uri);
4538: }
4539:
4540: # Full access at system, domain or course-wide level? Exit.
4541: if ($thisallowed=~/F/) {
4542: return 'F';
4543: }
4544:
4545: # If this is generating or modifying users, exit with special codes
4546:
4547: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
4548: if (($priv eq 'cca') || ($priv eq 'caa')) {
4549: my ($audom,$auname)=split('/',$uri);
4550: # no author name given, so this just checks on the general right to make a co-author in this domain
4551: unless ($auname) { return $thisallowed; }
4552: # an author name is given, so we are about to actually make a co-author for a certain account
4553: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
4554: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
4555: ($audom ne $env{'request.role.domain'}))) { return ''; }
4556: }
4557: return $thisallowed;
4558: }
4559: #
4560: # Gathered so far: system, domain and course wide privileges
4561: #
4562: # Course: See if uri or referer is an individual resource that is part of
4563: # the course
4564:
4565: if ($env{'request.course.id'}) {
4566:
4567: $courseprivid=$env{'request.course.id'};
4568: if ($env{'request.course.sec'}) {
4569: $courseprivid.='/'.$env{'request.course.sec'};
4570: }
4571: $courseprivid=~s/\_/\//;
4572: my $checkreferer=1;
4573: my ($match,$cond)=&is_on_map($uri);
4574: if ($match) {
4575: $statecond=$cond;
4576: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
4577: =~/\Q$priv\E\&([^\:]*)/) {
4578: $thisallowed.=$1;
4579: $checkreferer=0;
4580: }
4581: }
4582:
4583: if ($checkreferer) {
4584: my $refuri=$env{'httpref.'.$orguri};
4585: unless ($refuri) {
4586: foreach my $key (keys(%env)) {
4587: if ($key=~/^httpref\..*\*/) {
4588: my $pattern=$key;
4589: $pattern=~s/^httpref\.\/res\///;
4590: $pattern=~s/\*/\[\^\/\]\+/g;
4591: $pattern=~s/\//\\\//g;
4592: if ($orguri=~/$pattern/) {
4593: $refuri=$env{$key};
4594: }
4595: }
4596: }
4597: }
4598:
4599: if ($refuri) {
4600: $refuri=&declutter($refuri);
4601: my ($match,$cond)=&is_on_map($refuri);
4602: if ($match) {
4603: my $refstatecond=$cond;
4604: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
4605: =~/\Q$priv\E\&([^\:]*)/) {
4606: $thisallowed.=$1;
4607: $uri=$refuri;
4608: $statecond=$refstatecond;
4609: }
4610: }
4611: }
4612: }
4613: }
4614:
4615: #
4616: # Gathered now: all privileges that could apply, and condition number
4617: #
4618: #
4619: # Full or no access?
4620: #
4621:
4622: if ($thisallowed=~/F/) {
4623: return 'F';
4624: }
4625:
4626: unless ($thisallowed) {
4627: return '';
4628: }
4629:
4630: # Restrictions exist, deal with them
4631: #
4632: # C:according to course preferences
4633: # R:according to resource settings
4634: # L:unless locked
4635: # X:according to user session state
4636: #
4637:
4638: # Possibly locked functionality, check all courses
4639: # Locks might take effect only after 10 minutes cache expiration for other
4640: # courses, and 2 minutes for current course
4641:
4642: my $envkey;
4643: if ($thisallowed=~/L/) {
4644: foreach $envkey (keys %env) {
4645: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
4646: my $courseid=$2;
4647: my $roleid=$1.'.'.$2;
4648: $courseid=~s/^\///;
4649: my $expiretime=600;
4650: if ($env{'request.role'} eq $roleid) {
4651: $expiretime=120;
4652: }
4653: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
4654: my $prefix='course.'.$cdom.'_'.$cnum.'.';
4655: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
4656: &coursedescription($courseid,{'freshen_cache' => 1});
4657: }
4658: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
4659: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
4660: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
4661: &log($env{'user.domain'},$env{'user.name'},
4662: $env{'user.home'},
4663: 'Locked by res: '.$priv.' for '.$uri.' due to '.
4664: $cdom.'/'.$cnum.'/'.$csec.' expire '.
4665: $env{$prefix.'priv.'.$priv.'.lock.expire'});
4666: return '';
4667: }
4668: }
4669: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
4670: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
4671: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
4672: &log($env{'user.domain'},$env{'user.name'},
4673: $env{'user.home'},
4674: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
4675: $cdom.'/'.$cnum.'/'.$csec.' expire '.
4676: $env{$prefix.'priv.'.$priv.'.lock.expire'});
4677: return '';
4678: }
4679: }
4680: }
4681: }
4682: }
4683:
4684: #
4685: # Rest of the restrictions depend on selected course
4686: #
4687:
4688: unless ($env{'request.course.id'}) {
4689: if ($thisallowed eq 'A') {
4690: return 'A';
4691: } elsif ($thisallowed eq 'B') {
4692: return 'B';
4693: } else {
4694: return '1';
4695: }
4696: }
4697:
4698: #
4699: # Now user is definitely in a course
4700: #
4701:
4702:
4703: # Course preferences
4704:
4705: if ($thisallowed=~/C/) {
4706: my $rolecode=(split(/\./,$env{'request.role'}))[0];
4707: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
4708: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
4709: =~/\Q$rolecode\E/) {
4710: if ($priv ne 'pch') {
4711: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
4712: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
4713: $env{'request.course.id'});
4714: }
4715: return '';
4716: }
4717:
4718: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
4719: =~/\Q$unamedom\E/) {
4720: if ($priv ne 'pch') {
4721: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
4722: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
4723: $env{'request.course.id'});
4724: }
4725: return '';
4726: }
4727: }
4728:
4729: # Resource preferences
4730:
4731: if ($thisallowed=~/R/) {
4732: my $rolecode=(split(/\./,$env{'request.role'}))[0];
4733: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
4734: if ($priv ne 'pch') {
4735: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
4736: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
4737: }
4738: return '';
4739: }
4740: }
4741:
4742: # Restricted by state or randomout?
4743:
4744: if ($thisallowed=~/X/) {
4745: if ($env{'acc.randomout'}) {
4746: if (!$symb) { $symb=&symbread($uri,1); }
4747: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
4748: return '';
4749: }
4750: }
4751: if (&condval($statecond)) {
4752: return '2';
4753: } else {
4754: return '';
4755: }
4756: }
4757:
4758: if ($thisallowed eq 'A') {
4759: return 'A';
4760: } elsif ($thisallowed eq 'B') {
4761: return 'B';
4762: }
4763: return 'F';
4764: }
4765:
4766: sub split_uri_for_cond {
4767: my $uri=&deversion(&declutter(shift));
4768: my @uriparts=split(/\//,$uri);
4769: my $filename=pop(@uriparts);
4770: my $pathname=join('/',@uriparts);
4771: return ($pathname,$filename);
4772: }
4773: # --------------------------------------------------- Is a resource on the map?
4774:
4775: sub is_on_map {
4776: my ($pathname,$filename) = &split_uri_for_cond(shift);
4777: #Trying to find the conditional for the file
4778: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
4779: /\&\Q$filename\E\:([\d\|]+)\&/);
4780: if ($match) {
4781: return (1,$1);
4782: } else {
4783: return (0,0);
4784: }
4785: }
4786:
4787: # --------------------------------------------------------- Get symb from alias
4788:
4789: sub get_symb_from_alias {
4790: my $symb=shift;
4791: my ($map,$resid,$url)=&decode_symb($symb);
4792: # Already is a symb
4793: if ($url) { return $symb; }
4794: # Must be an alias
4795: my $aliassymb='';
4796: my %bighash;
4797: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
4798: &GDBM_READER(),0640)) {
4799: my $rid=$bighash{'mapalias_'.$symb};
4800: if ($rid) {
4801: my ($mapid,$resid)=split(/\./,$rid);
4802: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
4803: $resid,$bighash{'src_'.$rid});
4804: }
4805: untie %bighash;
4806: }
4807: return $aliassymb;
4808: }
4809:
4810: # ----------------------------------------------------------------- Define Role
4811:
4812: sub definerole {
4813: if (allowed('mcr','/')) {
4814: my ($rolename,$sysrole,$domrole,$courole)=@_;
4815: foreach my $role (split(':',$sysrole)) {
4816: my ($crole,$cqual)=split(/\&/,$role);
4817: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
4818: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
4819: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
4820: return "refused:s:$crole&$cqual";
4821: }
4822: }
4823: }
4824: foreach my $role (split(':',$domrole)) {
4825: my ($crole,$cqual)=split(/\&/,$role);
4826: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
4827: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
4828: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
4829: return "refused:d:$crole&$cqual";
4830: }
4831: }
4832: }
4833: foreach my $role (split(':',$courole)) {
4834: my ($crole,$cqual)=split(/\&/,$role);
4835: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
4836: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
4837: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
4838: return "refused:c:$crole&$cqual";
4839: }
4840: }
4841: }
4842: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
4843: "$env{'user.domain'}:$env{'user.name'}:".
4844: "rolesdef_$rolename=".
4845: escape($sysrole.'_'.$domrole.'_'.$courole);
4846: return reply($command,$env{'user.home'});
4847: } else {
4848: return 'refused';
4849: }
4850: }
4851:
4852: # ---------------- Make a metadata query against the network of library servers
4853:
4854: sub metadata_query {
4855: my ($query,$custom,$customshow,$server_array)=@_;
4856: my %rhash;
4857: my %libserv = &all_library();
4858: my @server_list = (defined($server_array) ? @$server_array
4859: : keys(%libserv) );
4860: for my $server (@server_list) {
4861: unless ($custom or $customshow) {
4862: my $reply=&reply("querysend:".&escape($query),$server);
4863: $rhash{$server}=$reply;
4864: }
4865: else {
4866: my $reply=&reply("querysend:".&escape($query).':'.
4867: &escape($custom).':'.&escape($customshow),
4868: $server);
4869: $rhash{$server}=$reply;
4870: }
4871: }
4872: return \%rhash;
4873: }
4874:
4875: # ----------------------------------------- Send log queries and wait for reply
4876:
4877: sub log_query {
4878: my ($uname,$udom,$query,%filters)=@_;
4879: my $uhome=&homeserver($uname,$udom);
4880: if ($uhome eq 'no_host') { return 'error: no_host'; }
4881: my $uhost=&hostname($uhome);
4882: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
4883: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
4884: $uhome);
4885: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
4886: return get_query_reply($queryid);
4887: }
4888:
4889: # -------------------------- Update MySQL table for portfolio file
4890:
4891: sub update_portfolio_table {
4892: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
4893: my $homeserver = &homeserver($uname,$udom);
4894: my $queryid=
4895: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
4896: ':'.&escape($file_name).':'.$action,$homeserver);
4897: my $reply = &get_query_reply($queryid);
4898: return $reply;
4899: }
4900:
4901: # -------------------------- Update MySQL allusers table
4902:
4903: sub update_allusers_table {
4904: my ($uname,$udom,$names) = @_;
4905: my $homeserver = &homeserver($uname,$udom);
4906: my $queryid=
4907: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
4908: 'lastname='.&escape($names->{'lastname'}).'%%'.
4909: 'firstname='.&escape($names->{'firstname'}).'%%'.
4910: 'middlename='.&escape($names->{'middlename'}).'%%'.
4911: 'generation='.&escape($names->{'generation'}).'%%'.
4912: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
4913: 'id='.&escape($names->{'id'}),$homeserver);
4914: my $reply = &get_query_reply($queryid);
4915: return $reply;
4916: }
4917:
4918: # ------- Request retrieval of institutional classlists for course(s)
4919:
4920: sub fetch_enrollment_query {
4921: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
4922: my $homeserver;
4923: my $maxtries = 1;
4924: if ($context eq 'automated') {
4925: $homeserver = $perlvar{'lonHostID'};
4926: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
4927: } else {
4928: $homeserver = &homeserver($cnum,$dom);
4929: }
4930: my $host=&hostname($homeserver);
4931: my $cmd = '';
4932: foreach my $affiliate (keys %{$affiliatesref}) {
4933: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
4934: }
4935: $cmd =~ s/%%$//;
4936: $cmd = &escape($cmd);
4937: my $query = 'fetchenrollment';
4938: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
4939: unless ($queryid=~/^\Q$host\E\_/) {
4940: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
4941: return 'error: '.$queryid;
4942: }
4943: my $reply = &get_query_reply($queryid);
4944: my $tries = 1;
4945: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
4946: $reply = &get_query_reply($queryid);
4947: $tries ++;
4948: }
4949: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
4950: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
4951: } else {
4952: my @responses = split(/:/,$reply);
4953: if ($homeserver eq $perlvar{'lonHostID'}) {
4954: foreach my $line (@responses) {
4955: my ($key,$value) = split(/=/,$line,2);
4956: $$replyref{$key} = $value;
4957: }
4958: } else {
4959: my $pathname = $perlvar{'lonDaemons'}.'/tmp';
4960: foreach my $line (@responses) {
4961: my ($key,$value) = split(/=/,$line);
4962: $$replyref{$key} = $value;
4963: if ($value > 0) {
4964: foreach my $item (@{$$affiliatesref{$key}}) {
4965: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
4966: my $destname = $pathname.'/'.$filename;
4967: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
4968: if ($xml_classlist =~ /^error/) {
4969: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
4970: } else {
4971: if ( open(FILE,">$destname") ) {
4972: print FILE &unescape($xml_classlist);
4973: close(FILE);
4974: } else {
4975: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
4976: }
4977: }
4978: }
4979: }
4980: }
4981: }
4982: return 'ok';
4983: }
4984: return 'error';
4985: }
4986:
4987: sub get_query_reply {
4988: my $queryid=shift;
4989: my $replyfile=$perlvar{'lonDaemons'}.'/tmp/'.$queryid;
4990: my $reply='';
4991: for (1..100) {
4992: sleep 2;
4993: if (-e $replyfile.'.end') {
4994: if (open(my $fh,$replyfile)) {
4995: $reply = join('',<$fh>);
4996: close($fh);
4997: } else { return 'error: reply_file_error'; }
4998: return &unescape($reply);
4999: }
5000: }
5001: return 'timeout:'.$queryid;
5002: }
5003:
5004: sub courselog_query {
5005: #
5006: # possible filters:
5007: # url: url or symb
5008: # username
5009: # domain
5010: # action: view, submit, grade
5011: # start: timestamp
5012: # end: timestamp
5013: #
5014: my (%filters)=@_;
5015: unless ($env{'request.course.id'}) { return 'no_course'; }
5016: if ($filters{'url'}) {
5017: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
5018: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
5019: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
5020: }
5021: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
5022: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
5023: return &log_query($cname,$cdom,'courselog',%filters);
5024: }
5025:
5026: sub userlog_query {
5027: #
5028: # possible filters:
5029: # action: log check role
5030: # start: timestamp
5031: # end: timestamp
5032: #
5033: my ($uname,$udom,%filters)=@_;
5034: return &log_query($uname,$udom,'userlog',%filters);
5035: }
5036:
5037: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
5038:
5039: sub auto_run {
5040: my ($cnum,$cdom) = @_;
5041: my $response = 0;
5042: my $settings;
5043: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
5044: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
5045: $settings = $domconfig{'autoenroll'};
5046: if ($settings->{'run'} eq '1') {
5047: $response = 1;
5048: }
5049: } else {
5050: my $homeserver;
5051: if (&is_course($cdom,$cnum)) {
5052: $homeserver = &homeserver($cnum,$cdom);
5053: } else {
5054: $homeserver = &domain($cdom,'primary');
5055: }
5056: if ($homeserver ne 'no_host') {
5057: $response = &reply('autorun:'.$cdom,$homeserver);
5058: }
5059: }
5060: return $response;
5061: }
5062:
5063: sub auto_get_sections {
5064: my ($cnum,$cdom,$inst_coursecode) = @_;
5065: my $homeserver = &homeserver($cnum,$cdom);
5066: my @secs = ();
5067: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
5068: unless ($response eq 'refused') {
5069: @secs = split(/:/,$response);
5070: }
5071: return @secs;
5072: }
5073:
5074: sub auto_new_course {
5075: my ($cnum,$cdom,$inst_course_id,$owner) = @_;
5076: my $homeserver = &homeserver($cnum,$cdom);
5077: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.$owner.':'.$cdom,$homeserver));
5078: return $response;
5079: }
5080:
5081: sub auto_validate_courseID {
5082: my ($cnum,$cdom,$inst_course_id) = @_;
5083: my $homeserver = &homeserver($cnum,$cdom);
5084: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
5085: return $response;
5086: }
5087:
5088: sub auto_create_password {
5089: my ($cnum,$cdom,$authparam,$udom) = @_;
5090: my ($homeserver,$response);
5091: my $create_passwd = 0;
5092: my $authchk = '';
5093: if ($udom =~ /^$match_domain$/) {
5094: $homeserver = &domain($udom,'primary');
5095: }
5096: if ($homeserver eq '') {
5097: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
5098: $homeserver = &homeserver($cnum,$cdom);
5099: }
5100: }
5101: if ($homeserver eq '') {
5102: $authchk = 'nodomain';
5103: } else {
5104: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
5105: if ($response eq 'refused') {
5106: $authchk = 'refused';
5107: } else {
5108: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
5109: }
5110: }
5111: return ($authparam,$create_passwd,$authchk);
5112: }
5113:
5114: sub auto_photo_permission {
5115: my ($cnum,$cdom,$students) = @_;
5116: my $homeserver = &homeserver($cnum,$cdom);
5117: my ($outcome,$perm_reqd,$conditions) =
5118: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
5119: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5120: return (undef,undef);
5121: }
5122: return ($outcome,$perm_reqd,$conditions);
5123: }
5124:
5125: sub auto_checkphotos {
5126: my ($uname,$udom,$pid) = @_;
5127: my $homeserver = &homeserver($uname,$udom);
5128: my ($result,$resulttype);
5129: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
5130: &escape($uname).':'.&escape($pid),
5131: $homeserver));
5132: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5133: return (undef,undef);
5134: }
5135: if ($outcome) {
5136: ($result,$resulttype) = split(/:/,$outcome);
5137: }
5138: return ($result,$resulttype);
5139: }
5140:
5141: sub auto_photochoice {
5142: my ($cnum,$cdom) = @_;
5143: my $homeserver = &homeserver($cnum,$cdom);
5144: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
5145: &escape($cdom),
5146: $homeserver)));
5147: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5148: return (undef,undef);
5149: }
5150: return ($update,$comment);
5151: }
5152:
5153: sub auto_photoupdate {
5154: my ($affiliatesref,$dom,$cnum,$photo) = @_;
5155: my $homeserver = &homeserver($cnum,$dom);
5156: my $host=&hostname($homeserver);
5157: my $cmd = '';
5158: my $maxtries = 1;
5159: foreach my $affiliate (keys(%{$affiliatesref})) {
5160: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
5161: }
5162: $cmd =~ s/%%$//;
5163: $cmd = &escape($cmd);
5164: my $query = 'institutionalphotos';
5165: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
5166: unless ($queryid=~/^\Q$host\E\_/) {
5167: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
5168: return 'error: '.$queryid;
5169: }
5170: my $reply = &get_query_reply($queryid);
5171: my $tries = 1;
5172: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
5173: $reply = &get_query_reply($queryid);
5174: $tries ++;
5175: }
5176: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
5177: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
5178: } else {
5179: my @responses = split(/:/,$reply);
5180: my $outcome = shift(@responses);
5181: foreach my $item (@responses) {
5182: my ($key,$value) = split(/=/,$item);
5183: $$photo{$key} = $value;
5184: }
5185: return $outcome;
5186: }
5187: return 'error';
5188: }
5189:
5190: sub auto_instcode_format {
5191: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
5192: $cat_order) = @_;
5193: my $courses = '';
5194: my @homeservers;
5195: if ($caller eq 'global') {
5196: my %servers = &get_servers($codedom,'library');
5197: foreach my $tryserver (keys(%servers)) {
5198: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
5199: push(@homeservers,$tryserver);
5200: }
5201: }
5202: } else {
5203: push(@homeservers,&homeserver($caller,$codedom));
5204: }
5205: foreach my $code (keys(%{$instcodes})) {
5206: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
5207: }
5208: chop($courses);
5209: my $ok_response = 0;
5210: my $response;
5211: while (@homeservers > 0 && $ok_response == 0) {
5212: my $server = shift(@homeservers);
5213: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
5214: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
5215: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
5216: split(/:/,$response);
5217: %{$codes} = (%{$codes},&str2hash($codes_str));
5218: push(@{$codetitles},&str2array($codetitles_str));
5219: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
5220: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
5221: $ok_response = 1;
5222: }
5223: }
5224: if ($ok_response) {
5225: return 'ok';
5226: } else {
5227: return $response;
5228: }
5229: }
5230:
5231: sub auto_instcode_defaults {
5232: my ($domain,$returnhash,$code_order) = @_;
5233: my @homeservers;
5234:
5235: my %servers = &get_servers($domain,'library');
5236: foreach my $tryserver (keys(%servers)) {
5237: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
5238: push(@homeservers,$tryserver);
5239: }
5240: }
5241:
5242: my $response;
5243: foreach my $server (@homeservers) {
5244: $response=&reply('autoinstcodedefaults:'.$domain,$server);
5245: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
5246:
5247: foreach my $pair (split(/\&/,$response)) {
5248: my ($name,$value)=split(/\=/,$pair);
5249: if ($name eq 'code_order') {
5250: @{$code_order} = split(/\&/,&unescape($value));
5251: } else {
5252: $returnhash->{&unescape($name)}=&unescape($value);
5253: }
5254: }
5255: return 'ok';
5256: }
5257:
5258: return $response;
5259: }
5260:
5261: sub auto_validate_class_sec {
5262: my ($cdom,$cnum,$owners,$inst_class) = @_;
5263: my $homeserver = &homeserver($cnum,$cdom);
5264: my $ownerlist;
5265: if (ref($owners) eq 'ARRAY') {
5266: $ownerlist = join(',',@{$owners});
5267: } else {
5268: $ownerlist = $owners;
5269: }
5270: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
5271: &escape($ownerlist).':'.$cdom,$homeserver);
5272: return $response;
5273: }
5274:
5275: # ------------------------------------------------------- Course Group routines
5276:
5277: sub get_coursegroups {
5278: my ($cdom,$cnum,$group,$namespace) = @_;
5279: return(&dump($namespace,$cdom,$cnum,$group));
5280: }
5281:
5282: sub modify_coursegroup {
5283: my ($cdom,$cnum,$groupsettings) = @_;
5284: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
5285: }
5286:
5287: sub toggle_coursegroup_status {
5288: my ($cdom,$cnum,$group,$action) = @_;
5289: my ($from_namespace,$to_namespace);
5290: if ($action eq 'delete') {
5291: $from_namespace = 'coursegroups';
5292: $to_namespace = 'deleted_groups';
5293: } else {
5294: $from_namespace = 'deleted_groups';
5295: $to_namespace = 'coursegroups';
5296: }
5297: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
5298: if (my $tmp = &error(%curr_group)) {
5299: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
5300: return ('read error',$tmp);
5301: } else {
5302: my %savedsettings = %curr_group;
5303: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
5304: my $deloutcome;
5305: if ($result eq 'ok') {
5306: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
5307: } else {
5308: return ('write error',$result);
5309: }
5310: if ($deloutcome eq 'ok') {
5311: return 'ok';
5312: } else {
5313: return ('delete error',$deloutcome);
5314: }
5315: }
5316: }
5317:
5318: sub modify_group_roles {
5319: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
5320: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
5321: my $role = 'gr/'.&escape($userprivs);
5322: my ($uname,$udom) = split(/:/,$user);
5323: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
5324: if ($result eq 'ok') {
5325: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
5326: }
5327: return $result;
5328: }
5329:
5330: sub modify_coursegroup_membership {
5331: my ($cdom,$cnum,$membership) = @_;
5332: my $result = &put('groupmembership',$membership,$cdom,$cnum);
5333: return $result;
5334: }
5335:
5336: sub get_active_groups {
5337: my ($udom,$uname,$cdom,$cnum) = @_;
5338: my $now = time;
5339: my %groups = ();
5340: foreach my $key (keys(%env)) {
5341: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
5342: my ($start,$end) = split(/\./,$env{$key});
5343: if (($end!=0) && ($end<$now)) { next; }
5344: if (($start!=0) && ($start>$now)) { next; }
5345: if ($1 eq $cdom && $2 eq $cnum) {
5346: $groups{$3} = $env{$key} ;
5347: }
5348: }
5349: }
5350: return %groups;
5351: }
5352:
5353: sub get_group_membership {
5354: my ($cdom,$cnum,$group) = @_;
5355: return(&dump('groupmembership',$cdom,$cnum,$group));
5356: }
5357:
5358: sub get_users_groups {
5359: my ($udom,$uname,$courseid) = @_;
5360: my @usersgroups;
5361: my $cachetime=1800;
5362:
5363: my $hashid="$udom:$uname:$courseid";
5364: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
5365: if (defined($cached)) {
5366: @usersgroups = split(/:/,$grouplist);
5367: } else {
5368: $grouplist = '';
5369: my $courseurl = &courseid_to_courseurl($courseid);
5370: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
5371: my $access_end = $env{'course.'.$courseid.
5372: '.default_enrollment_end_date'};
5373: my $now = time;
5374: foreach my $key (keys(%roleshash)) {
5375: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
5376: my $group = $1;
5377: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
5378: my $start = $2;
5379: my $end = $1;
5380: if ($start == -1) { next; } # deleted from group
5381: if (($start!=0) && ($start>$now)) { next; }
5382: if (($end!=0) && ($end<$now)) {
5383: if ($access_end && $access_end < $now) {
5384: if ($access_end - $end < 86400) {
5385: push(@usersgroups,$group);
5386: }
5387: }
5388: next;
5389: }
5390: push(@usersgroups,$group);
5391: }
5392: }
5393: }
5394: @usersgroups = &sort_course_groups($courseid,@usersgroups);
5395: $grouplist = join(':',@usersgroups);
5396: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
5397: }
5398: return @usersgroups;
5399: }
5400:
5401: sub devalidate_getgroups_cache {
5402: my ($udom,$uname,$cdom,$cnum)=@_;
5403: my $courseid = $cdom.'_'.$cnum;
5404:
5405: my $hashid="$udom:$uname:$courseid";
5406: &devalidate_cache_new('getgroups',$hashid);
5407: }
5408:
5409: # ------------------------------------------------------------------ Plain Text
5410:
5411: sub plaintext {
5412: my ($short,$type,$cid) = @_;
5413: if ($short =~ /^cr/) {
5414: return (split('/',$short))[-1];
5415: }
5416: if (!defined($cid)) {
5417: $cid = $env{'request.course.id'};
5418: }
5419: if (defined($cid) && defined($env{'course.'.$cid.'.'.$short.'.plaintext'})) {
5420: return &Apache::lonlocal::mt($env{'course.'.$cid.'.'.$short.
5421: '.plaintext'});
5422: }
5423: my %rolenames = (
5424: Course => 'std',
5425: Group => 'alt1',
5426: );
5427: if (defined($type) &&
5428: defined($rolenames{$type}) &&
5429: defined($prp{$short}{$rolenames{$type}})) {
5430: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
5431: } else {
5432: return &Apache::lonlocal::mt($prp{$short}{'std'});
5433: }
5434: }
5435:
5436: # ----------------------------------------------------------------- Assign Role
5437:
5438: sub assignrole {
5439: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
5440: $context)=@_;
5441: my $mrole;
5442: if ($role =~ /^cr\//) {
5443: my $cwosec=$url;
5444: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
5445: unless (&allowed('ccr',$cwosec)) {
5446: &logthis('Refused custom assignrole: '.
5447: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
5448: $env{'user.name'}.' at '.$env{'user.domain'});
5449: return 'refused';
5450: }
5451: $mrole='cr';
5452: } elsif ($role =~ /^gr\//) {
5453: my $cwogrp=$url;
5454: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
5455: unless (&allowed('mdg',$cwogrp)) {
5456: &logthis('Refused group assignrole: '.
5457: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
5458: $env{'user.name'}.' at '.$env{'user.domain'});
5459: return 'refused';
5460: }
5461: $mrole='gr';
5462: } else {
5463: my $cwosec=$url;
5464: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
5465: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
5466: my $refused;
5467: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
5468: if (!(&allowed('c'.$role,$url))) {
5469: $refused = 1;
5470: }
5471: } else {
5472: $refused = 1;
5473: }
5474: if ($refused) {
5475: if (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5476: $refused = '';
5477: } else {
5478: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
5479: ' '.$role.' '.$end.' '.$start.' by '.
5480: $env{'user.name'}.' at '.$env{'user.domain'});
5481: return 'refused';
5482: }
5483: }
5484: }
5485: $mrole=$role;
5486: }
5487: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
5488: "$udom:$uname:$url".'_'."$mrole=$role";
5489: if ($end) { $command.='_'.$end; }
5490: if ($start) {
5491: if ($end) {
5492: $command.='_'.$start;
5493: } else {
5494: $command.='_0_'.$start;
5495: }
5496: }
5497: my $origstart = $start;
5498: my $origend = $end;
5499: my $delflag;
5500: # actually delete
5501: if ($deleteflag) {
5502: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
5503: # modify command to delete the role
5504: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
5505: "$udom:$uname:$url".'_'."$mrole";
5506: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
5507: # set start and finish to negative values for userrolelog
5508: $start=-1;
5509: $end=-1;
5510: $delflag = 1;
5511: }
5512: }
5513: # send command
5514: my $answer=&reply($command,&homeserver($uname,$udom));
5515: # log new user role if status is ok
5516: if ($answer eq 'ok') {
5517: &userrolelog($role,$uname,$udom,$url,$start,$end);
5518: # for course roles, perform group memberships changes triggered by role change.
5519: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,$selfenroll,$context);
5520: unless ($role =~ /^gr/) {
5521: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
5522: $origstart,$selfenroll,$context);
5523: }
5524: }
5525: return $answer;
5526: }
5527:
5528: # -------------------------------------------------- Modify user authentication
5529: # Overrides without validation
5530:
5531: sub modifyuserauth {
5532: my ($udom,$uname,$umode,$upass)=@_;
5533: my $uhome=&homeserver($uname,$udom);
5534: unless (&allowed('mau',$udom)) { return 'refused'; }
5535: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
5536: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
5537: ' in domain '.$env{'request.role.domain'});
5538: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
5539: &escape($upass),$uhome);
5540: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
5541: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
5542: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
5543: &log($udom,,$uname,$uhome,
5544: 'Authentication changed by '.$env{'user.domain'}.', '.
5545: $env{'user.name'}.', '.$umode.
5546: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
5547: unless ($reply eq 'ok') {
5548: &logthis('Authentication mode error: '.$reply);
5549: return 'error: '.$reply;
5550: }
5551: return 'ok';
5552: }
5553:
5554: # --------------------------------------------------------------- Modify a user
5555:
5556: sub modifyuser {
5557: my ($udom, $uname, $uid,
5558: $umode, $upass, $first,
5559: $middle, $last, $gene,
5560: $forceid, $desiredhome, $email)=@_;
5561: $udom= &LONCAPA::clean_domain($udom);
5562: $uname=&LONCAPA::clean_username($uname);
5563: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
5564: $umode.', '.$first.', '.$middle.', '.
5565: $last.', '.$gene.'(forceid: '.$forceid.')'.
5566: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
5567: ' desiredhome not specified').
5568: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
5569: ' in domain '.$env{'request.role.domain'});
5570: my $uhome=&homeserver($uname,$udom,'true');
5571: # ----------------------------------------------------------------- Create User
5572: if (($uhome eq 'no_host') &&
5573: (($umode && $upass) || ($umode eq 'localauth'))) {
5574: my $unhome='';
5575: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
5576: $unhome = $desiredhome;
5577: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
5578: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
5579: } else { # load balancing routine for determining $unhome
5580: my $loadm=10000000;
5581: my %servers = &get_servers($udom,'library');
5582: foreach my $tryserver (keys(%servers)) {
5583: my $answer=reply('load',$tryserver);
5584: if (($answer=~/\d+/) && ($answer<$loadm)) {
5585: $loadm=$answer;
5586: $unhome=$tryserver;
5587: }
5588: }
5589: }
5590: if (($unhome eq '') || ($unhome eq 'no_host')) {
5591: return 'error: unable to find a home server for '.$uname.
5592: ' in domain '.$udom;
5593: }
5594: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
5595: &escape($upass),$unhome);
5596: unless ($reply eq 'ok') {
5597: return 'error: '.$reply;
5598: }
5599: $uhome=&homeserver($uname,$udom,'true');
5600: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
5601: return 'error: unable verify users home machine.';
5602: }
5603: } # End of creation of new user
5604: # ---------------------------------------------------------------------- Add ID
5605: if ($uid) {
5606: $uid=~tr/A-Z/a-z/;
5607: my %uidhash=&idrget($udom,$uname);
5608: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
5609: && (!$forceid)) {
5610: unless ($uid eq $uidhash{$uname}) {
5611: return 'error: user id "'.$uid.'" does not match '.
5612: 'current user id "'.$uidhash{$uname}.'".';
5613: }
5614: } else {
5615: &idput($udom,($uname => $uid));
5616: }
5617: }
5618: # -------------------------------------------------------------- Add names, etc
5619: my @tmp=&get('environment',
5620: ['firstname','middlename','lastname','generation','id',
5621: 'permanentemail'],
5622: $udom,$uname);
5623: my %names;
5624: if ($tmp[0] =~ m/^error:.*/) {
5625: %names=();
5626: } else {
5627: %names = @tmp;
5628: }
5629: #
5630: # Make sure to not trash student environment if instructor does not bother
5631: # to supply name and email information
5632: #
5633: if ($first) { $names{'firstname'} = $first; }
5634: if (defined($middle)) { $names{'middlename'} = $middle; }
5635: if ($last) { $names{'lastname'} = $last; }
5636: if (defined($gene)) { $names{'generation'} = $gene; }
5637: if ($email) {
5638: $email=~s/[^\w\@\.\-\,]//gs;
5639: if ($email=~/\@/) { $names{'notification'} = $email;
5640: $names{'critnotification'} = $email;
5641: $names{'permanentemail'} = $email; }
5642: }
5643: if ($uid) { $names{'id'} = $uid; }
5644: my $reply = &put('environment', \%names, $udom,$uname);
5645: if ($reply ne 'ok') { return 'error: '.$reply; }
5646: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
5647: &devalidate_cache_new('namescache',$uname.':'.$udom);
5648: &logthis('Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
5649: $umode.', '.$first.', '.$middle.', '.
5650: $last.', '.$gene.' by '.
5651: $env{'user.name'}.' at '.$env{'user.domain'});
5652: return 'ok';
5653: }
5654:
5655: # -------------------------------------------------------------- Modify student
5656:
5657: sub modifystudent {
5658: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
5659: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
5660: $selfenroll,$context)=@_;
5661: if (!$cid) {
5662: unless ($cid=$env{'request.course.id'}) {
5663: return 'not_in_class';
5664: }
5665: }
5666: # --------------------------------------------------------------- Make the user
5667: my $reply=&modifyuser
5668: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
5669: $desiredhome,$email);
5670: unless ($reply eq 'ok') { return $reply; }
5671: # This will cause &modify_student_enrollment to get the uid from the
5672: # students environment
5673: $uid = undef if (!$forceid);
5674: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
5675: $gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context);
5676: return $reply;
5677: }
5678:
5679: sub modify_student_enrollment {
5680: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context) = @_;
5681: my ($cdom,$cnum,$chome);
5682: if (!$cid) {
5683: unless ($cid=$env{'request.course.id'}) {
5684: return 'not_in_class';
5685: }
5686: $cdom=$env{'course.'.$cid.'.domain'};
5687: $cnum=$env{'course.'.$cid.'.num'};
5688: } else {
5689: ($cdom,$cnum)=split(/_/,$cid);
5690: }
5691: $chome=$env{'course.'.$cid.'.home'};
5692: if (!$chome) {
5693: $chome=&homeserver($cnum,$cdom);
5694: }
5695: if (!$chome) { return 'unknown_course'; }
5696: # Make sure the user exists
5697: my $uhome=&homeserver($uname,$udom);
5698: if (($uhome eq '') || ($uhome eq 'no_host')) {
5699: return 'error: no such user';
5700: }
5701: # Get student data if we were not given enough information
5702: if (!defined($first) || $first eq '' ||
5703: !defined($last) || $last eq '' ||
5704: !defined($uid) || $uid eq '' ||
5705: !defined($middle) || $middle eq '' ||
5706: !defined($gene) || $gene eq '') {
5707: # They did not supply us with enough data to enroll the student, so
5708: # we need to pick up more information.
5709: my %tmp = &get('environment',
5710: ['firstname','middlename','lastname', 'generation','id']
5711: ,$udom,$uname);
5712:
5713: #foreach my $key (keys(%tmp)) {
5714: # &logthis("key $key = ".$tmp{$key});
5715: #}
5716: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
5717: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
5718: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
5719: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
5720: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
5721: }
5722: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
5723: my $reply=cput('classlist',
5724: {"$uname:$udom" =>
5725: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
5726: $cdom,$cnum);
5727: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
5728: return 'error: '.$reply;
5729: } else {
5730: &devalidate_getsection_cache($udom,$uname,$cid);
5731: }
5732: # Add student role to user
5733: my $uurl='/'.$cid;
5734: $uurl=~s/\_/\//g;
5735: if ($usec) {
5736: $uurl.='/'.$usec;
5737: }
5738: return &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,$selfenroll,$context);
5739: }
5740:
5741: sub format_name {
5742: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
5743: my $name;
5744: if ($first ne 'lastname') {
5745: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
5746: } else {
5747: if ($lastname=~/\S/) {
5748: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
5749: $name=~s/\s+,/,/;
5750: } else {
5751: $name.= $firstname.' '.$middlename.' '.$generation;
5752: }
5753: }
5754: $name=~s/^\s+//;
5755: $name=~s/\s+$//;
5756: $name=~s/\s+/ /g;
5757: return $name;
5758: }
5759:
5760: # ------------------------------------------------- Write to course preferences
5761:
5762: sub writecoursepref {
5763: my ($courseid,%prefs)=@_;
5764: $courseid=~s/^\///;
5765: $courseid=~s/\_/\//g;
5766: my ($cdomain,$cnum)=split(/\//,$courseid);
5767: my $chome=homeserver($cnum,$cdomain);
5768: if (($chome eq '') || ($chome eq 'no_host')) {
5769: return 'error: no such course';
5770: }
5771: my $cstring='';
5772: foreach my $pref (keys(%prefs)) {
5773: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
5774: }
5775: $cstring=~s/\&$//;
5776: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
5777: }
5778:
5779: # ---------------------------------------------------------- Make/modify course
5780:
5781: sub createcourse {
5782: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
5783: $course_owner,$crstype)=@_;
5784: $url=&declutter($url);
5785: my $cid='';
5786: unless (&allowed('ccc',$udom)) {
5787: return 'refused';
5788: }
5789: # ------------------------------------------------------------------- Create ID
5790: my $uname=int(1+rand(9)).
5791: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
5792: substr($$.time,0,5).unpack("H8",pack("I32",time)).
5793: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
5794: # ----------------------------------------------- Make sure that does not exist
5795: my $uhome=&homeserver($uname,$udom,'true');
5796: unless (($uhome eq '') || ($uhome eq 'no_host')) {
5797: $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
5798: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
5799: $uhome=&homeserver($uname,$udom,'true');
5800: unless (($uhome eq '') || ($uhome eq 'no_host')) {
5801: return 'error: unable to generate unique course-ID';
5802: }
5803: }
5804: # ------------------------------------------------ Check supplied server name
5805: $course_server = $env{'user.homeserver'} if (! defined($course_server));
5806: if (! &is_library($course_server)) {
5807: return 'error:bad server name '.$course_server;
5808: }
5809: # ------------------------------------------------------------- Make the course
5810: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
5811: $course_server);
5812: unless ($reply eq 'ok') { return 'error: '.$reply; }
5813: $uhome=&homeserver($uname,$udom,'true');
5814: if (($uhome eq '') || ($uhome eq 'no_host')) {
5815: return 'error: no such course';
5816: }
5817: # ----------------------------------------------------------------- Course made
5818: # log existence
5819: my $newcourse = {
5820: $udom.'_'.$uname => {
5821: description => $description,
5822: inst_code => $inst_code,
5823: owner => $course_owner,
5824: type => $crstype,
5825: },
5826: };
5827: &courseidput($udom,$newcourse,$uhome,'notime');
5828: # set toplevel url
5829: my $topurl=$url;
5830: unless ($nonstandard) {
5831: # ------------------------------------------ For standard courses, make top url
5832: my $mapurl=&clutter($url);
5833: if ($mapurl eq '/res/') { $mapurl=''; }
5834: $env{'form.initmap'}=(<<ENDINITMAP);
5835: <map>
5836: <resource id="1" type="start"></resource>
5837: <resource id="2" src="$mapurl"></resource>
5838: <resource id="3" type="finish"></resource>
5839: <link index="1" from="1" to="2"></link>
5840: <link index="2" from="2" to="3"></link>
5841: </map>
5842: ENDINITMAP
5843: $topurl=&declutter(
5844: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
5845: );
5846: }
5847: # ----------------------------------------------------------- Write preferences
5848: &writecoursepref($udom.'_'.$uname,
5849: ('description' => $description,
5850: 'url' => $topurl));
5851: return '/'.$udom.'/'.$uname;
5852: }
5853:
5854: sub is_course {
5855: my ($cdom,$cnum) = @_;
5856: my %courses = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,
5857: undef,'.');
5858: if (exists($courses{$cdom.'_'.$cnum})) {
5859: return 1;
5860: }
5861: return 0;
5862: }
5863:
5864: # ---------------------------------------------------------- Assign Custom Role
5865:
5866: sub assigncustomrole {
5867: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
5868: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
5869: $end,$start,$deleteflag,$selfenroll,$context);
5870: }
5871:
5872: # ----------------------------------------------------------------- Revoke Role
5873:
5874: sub revokerole {
5875: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
5876: my $now=time;
5877: return &assignrole($udom,$uname,$url,$role,$now,$deleteflag,$selfenroll,$context);
5878: }
5879:
5880: # ---------------------------------------------------------- Revoke Custom Role
5881:
5882: sub revokecustomrole {
5883: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
5884: my $now=time;
5885: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
5886: $deleteflag,$selfenroll,$context);
5887: }
5888:
5889: # ------------------------------------------------------------ Disk usage
5890: sub diskusage {
5891: my ($udom,$uname,$directorypath,$getpropath)=@_;
5892: $directorypath =~ s/\/$//;
5893: my $listing=&reply('du2:'.&escape($directorypath).':'
5894: .&escape($getpropath).':'.&escape($uname).':'
5895: .&escape($udom),homeserver($uname,$udom));
5896: if ($listing eq 'unknown_cmd') {
5897: if ($getpropath) {
5898: $directorypath = &propath($udom,$uname).'/'.$directorypath;
5899: }
5900: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
5901: }
5902: return $listing;
5903: }
5904:
5905: sub is_locked {
5906: my ($file_name, $domain, $user) = @_;
5907: my @check;
5908: my $is_locked;
5909: push @check, $file_name;
5910: my %locked = &get('file_permissions',\@check,
5911: $env{'user.domain'},$env{'user.name'});
5912: my ($tmp)=keys(%locked);
5913: if ($tmp=~/^error:/) { undef(%locked); }
5914:
5915: if (ref($locked{$file_name}) eq 'ARRAY') {
5916: $is_locked = 'false';
5917: foreach my $entry (@{$locked{$file_name}}) {
5918: if (ref($entry) eq 'ARRAY') {
5919: $is_locked = 'true';
5920: last;
5921: }
5922: }
5923: } else {
5924: $is_locked = 'false';
5925: }
5926: }
5927:
5928: sub declutter_portfile {
5929: my ($file) = @_;
5930: $file =~ s{^(/portfolio/|portfolio/)}{/};
5931: return $file;
5932: }
5933:
5934: # ------------------------------------------------------------- Mark as Read Only
5935:
5936: sub mark_as_readonly {
5937: my ($domain,$user,$files,$what) = @_;
5938: my %current_permissions = &dump('file_permissions',$domain,$user);
5939: my ($tmp)=keys(%current_permissions);
5940: if ($tmp=~/^error:/) { undef(%current_permissions); }
5941: foreach my $file (@{$files}) {
5942: $file = &declutter_portfile($file);
5943: push(@{$current_permissions{$file}},$what);
5944: }
5945: &put('file_permissions',\%current_permissions,$domain,$user);
5946: return;
5947: }
5948:
5949: # ------------------------------------------------------------Save Selected Files
5950:
5951: sub save_selected_files {
5952: my ($user, $path, @files) = @_;
5953: my $filename = $user."savedfiles";
5954: my @other_files = &files_not_in_path($user, $path);
5955: open (OUT, '>'.$tmpdir.$filename);
5956: foreach my $file (@files) {
5957: print (OUT $env{'form.currentpath'}.$file."\n");
5958: }
5959: foreach my $file (@other_files) {
5960: print (OUT $file."\n");
5961: }
5962: close (OUT);
5963: return 'ok';
5964: }
5965:
5966: sub clear_selected_files {
5967: my ($user) = @_;
5968: my $filename = $user."savedfiles";
5969: open (OUT, '>'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
5970: print (OUT undef);
5971: close (OUT);
5972: return ("ok");
5973: }
5974:
5975: sub files_in_path {
5976: my ($user, $path) = @_;
5977: my $filename = $user."savedfiles";
5978: my %return_files;
5979: open (IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
5980: while (my $line_in = <IN>) {
5981: chomp ($line_in);
5982: my @paths_and_file = split (m!/!, $line_in);
5983: my $file_part = pop (@paths_and_file);
5984: my $path_part = join ('/', @paths_and_file);
5985: $path_part.='/';
5986: my $path_and_file = $path_part.$file_part;
5987: if ($path_part eq $path) {
5988: $return_files{$file_part}= 'selected';
5989: }
5990: }
5991: close (IN);
5992: return (\%return_files);
5993: }
5994:
5995: # called in portfolio select mode, to show files selected NOT in current directory
5996: sub files_not_in_path {
5997: my ($user, $path) = @_;
5998: my $filename = $user."savedfiles";
5999: my @return_files;
6000: my $path_part;
6001: open(IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
6002: while (my $line = <IN>) {
6003: #ok, I know it's clunky, but I want it to work
6004: my @paths_and_file = split(m|/|, $line);
6005: my $file_part = pop(@paths_and_file);
6006: chomp($file_part);
6007: my $path_part = join('/', @paths_and_file);
6008: $path_part .= '/';
6009: my $path_and_file = $path_part.$file_part;
6010: if ($path_part ne $path) {
6011: push(@return_files, ($path_and_file));
6012: }
6013: }
6014: close(OUT);
6015: return (@return_files);
6016: }
6017:
6018: #----------------------------------------------Get portfolio file permissions
6019:
6020: sub get_portfile_permissions {
6021: my ($domain,$user) = @_;
6022: my %current_permissions = &dump('file_permissions',$domain,$user);
6023: my ($tmp)=keys(%current_permissions);
6024: if ($tmp=~/^error:/) { undef(%current_permissions); }
6025: return \%current_permissions;
6026: }
6027:
6028: #---------------------------------------------Get portfolio file access controls
6029:
6030: sub get_access_controls {
6031: my ($current_permissions,$group,$file) = @_;
6032: my %access;
6033: my $real_file = $file;
6034: $file =~ s/\.meta$//;
6035: if (defined($file)) {
6036: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
6037: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
6038: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
6039: }
6040: }
6041: } else {
6042: foreach my $key (keys(%{$current_permissions})) {
6043: if ($key =~ /\0accesscontrol$/) {
6044: if (defined($group)) {
6045: if ($key !~ m-^\Q$group\E/-) {
6046: next;
6047: }
6048: }
6049: my ($fullpath) = split(/\0/,$key);
6050: if (ref($$current_permissions{$key}) eq 'HASH') {
6051: foreach my $control (keys(%{$$current_permissions{$key}})) {
6052: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
6053: }
6054: }
6055: }
6056: }
6057: }
6058: return %access;
6059: }
6060:
6061: sub modify_access_controls {
6062: my ($file_name,$changes,$domain,$user)=@_;
6063: my ($outcome,$deloutcome);
6064: my %store_permissions;
6065: my %new_values;
6066: my %new_control;
6067: my %translation;
6068: my @deletions = ();
6069: my $now = time;
6070: if (exists($$changes{'activate'})) {
6071: if (ref($$changes{'activate'}) eq 'HASH') {
6072: my @newitems = sort(keys(%{$$changes{'activate'}}));
6073: my $numnew = scalar(@newitems);
6074: for (my $i=0; $i<$numnew; $i++) {
6075: my $newkey = $newitems[$i];
6076: my $newid = &Apache::loncommon::get_cgi_id();
6077: if ($newkey =~ /^\d+:/) {
6078: $newkey =~ s/^(\d+)/$newid/;
6079: $translation{$1} = $newid;
6080: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
6081: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
6082: $translation{$1} = $newid;
6083: }
6084: $new_values{$file_name."\0".$newkey} =
6085: $$changes{'activate'}{$newitems[$i]};
6086: $new_control{$newkey} = $now;
6087: }
6088: }
6089: }
6090: my %todelete;
6091: my %changed_items;
6092: foreach my $action ('delete','update') {
6093: if (exists($$changes{$action})) {
6094: if (ref($$changes{$action}) eq 'HASH') {
6095: foreach my $key (keys(%{$$changes{$action}})) {
6096: my ($itemnum) = ($key =~ /^([^:]+):/);
6097: if ($action eq 'delete') {
6098: $todelete{$itemnum} = 1;
6099: } else {
6100: $changed_items{$itemnum} = $key;
6101: }
6102: }
6103: }
6104: }
6105: }
6106: # get lock on access controls for file.
6107: my $lockhash = {
6108: $file_name."\0".'locked_access_records' => $env{'user.name'}.
6109: ':'.$env{'user.domain'},
6110: };
6111: my $tries = 0;
6112: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
6113:
6114: while (($gotlock ne 'ok') && $tries <3) {
6115: $tries ++;
6116: sleep 1;
6117: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
6118: }
6119: if ($gotlock eq 'ok') {
6120: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
6121: my ($tmp)=keys(%curr_permissions);
6122: if ($tmp=~/^error:/) { undef(%curr_permissions); }
6123: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
6124: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
6125: if (ref($curr_controls) eq 'HASH') {
6126: foreach my $control_item (keys(%{$curr_controls})) {
6127: my ($itemnum) = ($control_item =~ /^([^:]+):/);
6128: if (defined($todelete{$itemnum})) {
6129: push(@deletions,$file_name."\0".$control_item);
6130: } else {
6131: if (defined($changed_items{$itemnum})) {
6132: $new_control{$changed_items{$itemnum}} = $now;
6133: push(@deletions,$file_name."\0".$control_item);
6134: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
6135: } else {
6136: $new_control{$control_item} = $$curr_controls{$control_item};
6137: }
6138: }
6139: }
6140: }
6141: }
6142: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
6143: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
6144: $outcome = &put('file_permissions',\%new_values,$domain,$user);
6145: # remove lock
6146: my @del_lock = ($file_name."\0".'locked_access_records');
6147: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
6148: my ($file,$group);
6149: if (&is_course($domain,$user)) {
6150: ($group,$file) = split(/\//,$file_name,2);
6151: } else {
6152: $file = $file_name;
6153: }
6154: my $sqlresult =
6155: &update_portfolio_table($user,$domain,$file,'portfolio_access',
6156: $group);
6157: } else {
6158: $outcome = "error: could not obtain lockfile\n";
6159: }
6160: return ($outcome,$deloutcome,\%new_values,\%translation);
6161: }
6162:
6163: sub make_public_indefinitely {
6164: my ($requrl) = @_;
6165: my $now = time;
6166: my $action = 'activate';
6167: my $aclnum = 0;
6168: if (&is_portfolio_url($requrl)) {
6169: my (undef,$udom,$unum,$file_name,$group) =
6170: &parse_portfolio_url($requrl);
6171: my $current_perms = &get_portfile_permissions($udom,$unum);
6172: my %access_controls = &get_access_controls($current_perms,
6173: $group,$file_name);
6174: foreach my $key (keys(%{$access_controls{$file_name}})) {
6175: my ($num,$scope,$end,$start) =
6176: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
6177: if ($scope eq 'public') {
6178: if ($start <= $now && $end == 0) {
6179: $action = 'none';
6180: } else {
6181: $action = 'update';
6182: $aclnum = $num;
6183: }
6184: last;
6185: }
6186: }
6187: if ($action eq 'none') {
6188: return 'ok';
6189: } else {
6190: my %changes;
6191: my $newend = 0;
6192: my $newstart = $now;
6193: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
6194: $changes{$action}{$newkey} = {
6195: type => 'public',
6196: time => {
6197: start => $newstart,
6198: end => $newend,
6199: },
6200: };
6201: my ($outcome,$deloutcome,$new_values,$translation) =
6202: &modify_access_controls($file_name,\%changes,$udom,$unum);
6203: return $outcome;
6204: }
6205: } else {
6206: return 'invalid';
6207: }
6208: }
6209:
6210: #------------------------------------------------------Get Marked as Read Only
6211:
6212: sub get_marked_as_readonly {
6213: my ($domain,$user,$what,$group) = @_;
6214: my $current_permissions = &get_portfile_permissions($domain,$user);
6215: my @readonly_files;
6216: my $cmp1=$what;
6217: if (ref($what)) { $cmp1=join('',@{$what}) };
6218: while (my ($file_name,$value) = each(%{$current_permissions})) {
6219: if (defined($group)) {
6220: if ($file_name !~ m-^\Q$group\E/-) {
6221: next;
6222: }
6223: }
6224: if (ref($value) eq "ARRAY"){
6225: foreach my $stored_what (@{$value}) {
6226: my $cmp2=$stored_what;
6227: if (ref($stored_what) eq 'ARRAY') {
6228: $cmp2=join('',@{$stored_what});
6229: }
6230: if ($cmp1 eq $cmp2) {
6231: push(@readonly_files, $file_name);
6232: last;
6233: } elsif (!defined($what)) {
6234: push(@readonly_files, $file_name);
6235: last;
6236: }
6237: }
6238: }
6239: }
6240: return @readonly_files;
6241: }
6242: #-----------------------------------------------------------Get Marked as Read Only Hash
6243:
6244: sub get_marked_as_readonly_hash {
6245: my ($current_permissions,$group,$what) = @_;
6246: my %readonly_files;
6247: while (my ($file_name,$value) = each(%{$current_permissions})) {
6248: if (defined($group)) {
6249: if ($file_name !~ m-^\Q$group\E/-) {
6250: next;
6251: }
6252: }
6253: if (ref($value) eq "ARRAY"){
6254: foreach my $stored_what (@{$value}) {
6255: if (ref($stored_what) eq 'ARRAY') {
6256: foreach my $lock_descriptor(@{$stored_what}) {
6257: if ($lock_descriptor eq 'graded') {
6258: $readonly_files{$file_name} = 'graded';
6259: } elsif ($lock_descriptor eq 'handback') {
6260: $readonly_files{$file_name} = 'handback';
6261: } else {
6262: if (!exists($readonly_files{$file_name})) {
6263: $readonly_files{$file_name} = 'locked';
6264: }
6265: }
6266: }
6267: }
6268: }
6269: }
6270: }
6271: return %readonly_files;
6272: }
6273: # ------------------------------------------------------------ Unmark as Read Only
6274:
6275: sub unmark_as_readonly {
6276: # unmarks $file_name (if $file_name is defined), or all files locked by $what
6277: # for portfolio submissions, $what contains [$symb,$crsid]
6278: my ($domain,$user,$what,$file_name,$group) = @_;
6279: $file_name = &declutter_portfile($file_name);
6280: my $symb_crs = $what;
6281: if (ref($what)) { $symb_crs=join('',@$what); }
6282: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
6283: my ($tmp)=keys(%current_permissions);
6284: if ($tmp=~/^error:/) { undef(%current_permissions); }
6285: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
6286: foreach my $file (@readonly_files) {
6287: my $clean_file = &declutter_portfile($file);
6288: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
6289: my $current_locks = $current_permissions{$file};
6290: my @new_locks;
6291: my @del_keys;
6292: if (ref($current_locks) eq "ARRAY"){
6293: foreach my $locker (@{$current_locks}) {
6294: my $compare=$locker;
6295: if (ref($locker) eq 'ARRAY') {
6296: $compare=join('',@{$locker});
6297: if ($compare ne $symb_crs) {
6298: push(@new_locks, $locker);
6299: }
6300: }
6301: }
6302: if (scalar(@new_locks) > 0) {
6303: $current_permissions{$file} = \@new_locks;
6304: } else {
6305: push(@del_keys, $file);
6306: &del('file_permissions',\@del_keys, $domain, $user);
6307: delete($current_permissions{$file});
6308: }
6309: }
6310: }
6311: &put('file_permissions',\%current_permissions,$domain,$user);
6312: return;
6313: }
6314:
6315: # ------------------------------------------------------------ Directory lister
6316:
6317: sub dirlist {
6318: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
6319: $uri=~s/^\///;
6320: $uri=~s/\/$//;
6321: my ($udom, $uname);
6322: if ($getuserdir) {
6323: $udom = $userdomain;
6324: $uname = $username;
6325: } else {
6326: (undef,$udom,$uname)=split(/\//,$uri);
6327: if(defined($userdomain)) {
6328: $udom = $userdomain;
6329: }
6330: if(defined($username)) {
6331: $uname = $username;
6332: }
6333: }
6334: my ($dirRoot,$listing,@listing_results);
6335:
6336: $dirRoot = $perlvar{'lonDocRoot'};
6337: if (defined($getpropath)) {
6338: $dirRoot = &propath($udom,$uname);
6339: $dirRoot =~ s/\/$//;
6340: } elsif (defined($getuserdir)) {
6341: my $subdir=$uname.'__';
6342: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
6343: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
6344: ."/$udom/$subdir/$uname";
6345: } elsif (defined($alternateRoot)) {
6346: $dirRoot = $alternateRoot;
6347: }
6348:
6349: if($udom) {
6350: if($uname) {
6351: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
6352: .$getuserdir.':'.&escape($dirRoot)
6353: .':'.&escape($uname).':'.&escape($udom),
6354: &homeserver($uname,$udom));
6355: if ($listing eq 'unknown_cmd') {
6356: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,
6357: &homeserver($uname,$udom));
6358: } else {
6359: @listing_results = map { &unescape($_); } split(/:/,$listing);
6360: }
6361: if ($listing eq 'unknown_cmd') {
6362: $listing = &reply('ls:'.$dirRoot.'/'.$uri,
6363: &homeserver($uname,$udom));
6364: @listing_results = split(/:/,$listing);
6365: } else {
6366: @listing_results = map { &unescape($_); } split(/:/,$listing);
6367: }
6368: return @listing_results;
6369: } elsif(!$alternateRoot) {
6370: my %allusers;
6371: my %servers = &get_servers($udom,'library');
6372: foreach my $tryserver (keys(%servers)) {
6373: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
6374: &escape($udom),$tryserver);
6375: if ($listing eq 'unknown_cmd') {
6376: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
6377: $udom, $tryserver);
6378: } else {
6379: @listing_results = map { &unescape($_); } split(/:/,$listing);
6380: }
6381: if ($listing eq 'unknown_cmd') {
6382: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
6383: $udom, $tryserver);
6384: @listing_results = split(/:/,$listing);
6385: } else {
6386: @listing_results =
6387: map { &unescape($_); } split(/:/,$listing);
6388: }
6389: if ($listing_results[0] ne 'no_such_dir' &&
6390: $listing_results[0] ne 'empty' &&
6391: $listing_results[0] ne 'con_lost') {
6392: foreach my $line (@listing_results) {
6393: my ($entry) = split(/&/,$line,2);
6394: $allusers{$entry} = 1;
6395: }
6396: }
6397: }
6398: my $alluserstr='';
6399: foreach my $user (sort(keys(%allusers))) {
6400: $alluserstr.=$user.'&user:';
6401: }
6402: $alluserstr=~s/:$//;
6403: return split(/:/,$alluserstr);
6404: } else {
6405: return ('missing user name');
6406: }
6407: } elsif(!defined($getpropath)) {
6408: my @all_domains = sort(&all_domains());
6409: foreach my $domain (@all_domains) {
6410: $domain = $perlvar{'lonDocRoot'}.'/res/'.$domain.'/&domain';
6411: }
6412: return @all_domains;
6413: } else {
6414: return ('missing domain');
6415: }
6416: }
6417:
6418: # --------------------------------------------- GetFileTimestamp
6419: # This function utilizes dirlist and returns the date stamp for
6420: # when it was last modified. It will also return an error of -1
6421: # if an error occurs
6422:
6423: sub GetFileTimestamp {
6424: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
6425: $studentDomain = &LONCAPA::clean_domain($studentDomain);
6426: $studentName = &LONCAPA::clean_username($studentName);
6427: my ($fileStat) =
6428: &Apache::lonnet::dirlist($filename,$studentDomain,$studentName,
6429: undef,$getuserdir);
6430: my @stats = split('&', $fileStat);
6431: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
6432: # @stats contains first the filename, then the stat output
6433: return $stats[10]; # so this is 10 instead of 9.
6434: } else {
6435: return -1;
6436: }
6437: }
6438:
6439: sub stat_file {
6440: my ($uri) = @_;
6441: $uri = &clutter_with_no_wrapper($uri);
6442:
6443: my ($udom,$uname,$file);
6444: if ($uri =~ m-^/(uploaded|editupload)/-) {
6445: ($udom,$uname,$file) =
6446: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
6447: $file = 'userfiles/'.$file;
6448: }
6449: if ($uri =~ m-^/res/-) {
6450: ($udom,$uname) =
6451: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
6452: $file = $uri;
6453: }
6454:
6455: if (!$udom || !$uname || !$file) {
6456: # unable to handle the uri
6457: return ();
6458: }
6459: my $getpropath;
6460: if ($file =~ /^userfiles\//) {
6461: $getpropath = 1;
6462: }
6463: my ($result) = &dirlist($file,$udom,$uname,$getpropath);
6464: my @stats = split('&', $result);
6465:
6466: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
6467: shift(@stats); #filename is first
6468: return @stats;
6469: }
6470: return ();
6471: }
6472:
6473: # -------------------------------------------------------- Value of a Condition
6474:
6475: # gets the value of a specific preevaluated condition
6476: # stored in the string $env{user.state.<cid>}
6477: # or looks up a condition reference in the bighash and if if hasn't
6478: # already been evaluated recurses into docondval to get the value of
6479: # the condition, then memoizing it to
6480: # $env{user.state.<cid>.<condition>}
6481: sub directcondval {
6482: my $number=shift;
6483: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
6484: &Apache::lonuserstate::evalstate();
6485: }
6486: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
6487: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
6488: } elsif ($number =~ /^_/) {
6489: my $sub_condition;
6490: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
6491: &GDBM_READER(),0640)) {
6492: $sub_condition=$bighash{'conditions'.$number};
6493: untie(%bighash);
6494: }
6495: my $value = &docondval($sub_condition);
6496: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
6497: return $value;
6498: }
6499: if ($env{'user.state.'.$env{'request.course.id'}}) {
6500: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
6501: } else {
6502: return 2;
6503: }
6504: }
6505:
6506: # get the collection of conditions for this resource
6507: sub condval {
6508: my $condidx=shift;
6509: my $allpathcond='';
6510: foreach my $cond (split(/\|/,$condidx)) {
6511: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
6512: $allpathcond.=
6513: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
6514: }
6515: }
6516: $allpathcond=~s/\|$//;
6517: return &docondval($allpathcond);
6518: }
6519:
6520: #evaluates an expression of conditions
6521: sub docondval {
6522: my ($allpathcond) = @_;
6523: my $result=0;
6524: if ($env{'request.course.id'}
6525: && defined($allpathcond)) {
6526: my $operand='|';
6527: my @stack;
6528: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
6529: if ($chunk eq '(') {
6530: push @stack,($operand,$result);
6531: } elsif ($chunk eq ')') {
6532: my $before=pop @stack;
6533: if (pop @stack eq '&') {
6534: $result=$result>$before?$before:$result;
6535: } else {
6536: $result=$result>$before?$result:$before;
6537: }
6538: } elsif (($chunk eq '&') || ($chunk eq '|')) {
6539: $operand=$chunk;
6540: } else {
6541: my $new=directcondval($chunk);
6542: if ($operand eq '&') {
6543: $result=$result>$new?$new:$result;
6544: } else {
6545: $result=$result>$new?$result:$new;
6546: }
6547: }
6548: }
6549: }
6550: return $result;
6551: }
6552:
6553: # ---------------------------------------------------- Devalidate courseresdata
6554:
6555: sub devalidatecourseresdata {
6556: my ($coursenum,$coursedomain)=@_;
6557: my $hashid=$coursenum.':'.$coursedomain;
6558: &devalidate_cache_new('courseres',$hashid);
6559: }
6560:
6561:
6562: # --------------------------------------------------- Course Resourcedata Query
6563: #
6564: # Parameters:
6565: # $coursenum - Number of the course.
6566: # $coursedomain - Domain at which the course was created.
6567: # Returns:
6568: # A hash of the course parameters along (I think) with timestamps
6569: # and version info.
6570:
6571: sub get_courseresdata {
6572: my ($coursenum,$coursedomain)=@_;
6573: my $coursehom=&homeserver($coursenum,$coursedomain);
6574: my $hashid=$coursenum.':'.$coursedomain;
6575: my ($result,$cached)=&is_cached_new('courseres',$hashid);
6576: my %dumpreply;
6577: unless (defined($cached)) {
6578: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
6579: $result=\%dumpreply;
6580: my ($tmp) = keys(%dumpreply);
6581: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
6582: &do_cache_new('courseres',$hashid,$result,600);
6583: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
6584: return $tmp;
6585: } elsif ($tmp =~ /^(error)/) {
6586: $result=undef;
6587: &do_cache_new('courseres',$hashid,$result,600);
6588: }
6589: }
6590: return $result;
6591: }
6592:
6593: sub devalidateuserresdata {
6594: my ($uname,$udom)=@_;
6595: my $hashid="$udom:$uname";
6596: &devalidate_cache_new('userres',$hashid);
6597: }
6598:
6599: sub get_userresdata {
6600: my ($uname,$udom)=@_;
6601: #most student don\'t have any data set, check if there is some data
6602: if (&EXT_cache_status($udom,$uname)) { return undef; }
6603:
6604: my $hashid="$udom:$uname";
6605: my ($result,$cached)=&is_cached_new('userres',$hashid);
6606: if (!defined($cached)) {
6607: my %resourcedata=&dump('resourcedata',$udom,$uname);
6608: $result=\%resourcedata;
6609: &do_cache_new('userres',$hashid,$result,600);
6610: }
6611: my ($tmp)=keys(%$result);
6612: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
6613: return $result;
6614: }
6615: #error 2 occurs when the .db doesn't exist
6616: if ($tmp!~/error: 2 /) {
6617: &logthis("<font color=\"blue\">WARNING:".
6618: " Trying to get resource data for ".
6619: $uname." at ".$udom.": ".
6620: $tmp."</font>");
6621: } elsif ($tmp=~/error: 2 /) {
6622: #&EXT_cache_set($udom,$uname);
6623: &do_cache_new('userres',$hashid,undef,600);
6624: undef($tmp); # not really an error so don't send it back
6625: }
6626: return $tmp;
6627: }
6628: #----------------------------------------------- resdata - return resource data
6629: # Purpose:
6630: # Return resource data for either users or for a course.
6631: # Parameters:
6632: # $name - Course/user name.
6633: # $domain - Name of the domain the user/course is registered on.
6634: # $type - Type of thing $name is (must be 'course' or 'user'
6635: # @which - Array of names of resources desired.
6636: # Returns:
6637: # The value of the first reasource in @which that is found in the
6638: # resource hash.
6639: # Exceptional Conditions:
6640: # If the $type passed in is not valid (not the string 'course' or
6641: # 'user', an undefined reference is returned.
6642: # If none of the resources are found, an undef is returned
6643: sub resdata {
6644: my ($name,$domain,$type,@which)=@_;
6645: my $result;
6646: if ($type eq 'course') {
6647: $result=&get_courseresdata($name,$domain);
6648: } elsif ($type eq 'user') {
6649: $result=&get_userresdata($name,$domain);
6650: }
6651: if (!ref($result)) { return $result; }
6652: foreach my $item (@which) {
6653: if (defined($result->{$item->[0]})) {
6654: return [$result->{$item->[0]},$item->[1]];
6655: }
6656: }
6657: return undef;
6658: }
6659:
6660: #
6661: # EXT resource caching routines
6662: #
6663:
6664: sub clear_EXT_cache_status {
6665: &delenv('cache.EXT.');
6666: }
6667:
6668: sub EXT_cache_status {
6669: my ($target_domain,$target_user) = @_;
6670: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
6671: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
6672: # We know already the user has no data
6673: return 1;
6674: } else {
6675: return 0;
6676: }
6677: }
6678:
6679: sub EXT_cache_set {
6680: my ($target_domain,$target_user) = @_;
6681: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
6682: #&appenv({$cachename => time});
6683: }
6684:
6685: # --------------------------------------------------------- Value of a Variable
6686: sub EXT {
6687:
6688: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
6689: unless ($varname) { return ''; }
6690: #get real user name/domain, courseid and symb
6691: my $courseid;
6692: my $publicuser;
6693: if ($symbparm) {
6694: $symbparm=&get_symb_from_alias($symbparm);
6695: }
6696: if (!($uname && $udom)) {
6697: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
6698: if (!$symbparm) { $symbparm=$cursymb; }
6699: } else {
6700: $courseid=$env{'request.course.id'};
6701: }
6702: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
6703: my $rest;
6704: if (defined($therest[0])) {
6705: $rest=join('.',@therest);
6706: } else {
6707: $rest='';
6708: }
6709:
6710: my $qualifierrest=$qualifier;
6711: if ($rest) { $qualifierrest.='.'.$rest; }
6712: my $spacequalifierrest=$space;
6713: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
6714: if ($realm eq 'user') {
6715: # --------------------------------------------------------------- user.resource
6716: if ($space eq 'resource') {
6717: if ( (defined($Apache::lonhomework::parsing_a_problem)
6718: || defined($Apache::lonhomework::parsing_a_task))
6719: &&
6720: ($symbparm eq &symbread()) ) {
6721: # if we are in the middle of processing the resource the
6722: # get the value we are planning on committing
6723: if (defined($Apache::lonhomework::results{$qualifierrest})) {
6724: return $Apache::lonhomework::results{$qualifierrest};
6725: } else {
6726: return $Apache::lonhomework::history{$qualifierrest};
6727: }
6728: } else {
6729: my %restored;
6730: if ($publicuser || $env{'request.state'} eq 'construct') {
6731: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
6732: } else {
6733: %restored=&restore($symbparm,$courseid,$udom,$uname);
6734: }
6735: return $restored{$qualifierrest};
6736: }
6737: # ----------------------------------------------------------------- user.access
6738: } elsif ($space eq 'access') {
6739: # FIXME - not supporting calls for a specific user
6740: return &allowed($qualifier,$rest);
6741: # ------------------------------------------ user.preferences, user.environment
6742: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
6743: if (($uname eq $env{'user.name'}) &&
6744: ($udom eq $env{'user.domain'})) {
6745: return $env{join('.',('environment',$qualifierrest))};
6746: } else {
6747: my %returnhash;
6748: if (!$publicuser) {
6749: %returnhash=&userenvironment($udom,$uname,
6750: $qualifierrest);
6751: }
6752: return $returnhash{$qualifierrest};
6753: }
6754: # ----------------------------------------------------------------- user.course
6755: } elsif ($space eq 'course') {
6756: # FIXME - not supporting calls for a specific user
6757: return $env{join('.',('request.course',$qualifier))};
6758: # ------------------------------------------------------------------- user.role
6759: } elsif ($space eq 'role') {
6760: # FIXME - not supporting calls for a specific user
6761: my ($role,$where)=split(/\./,$env{'request.role'});
6762: if ($qualifier eq 'value') {
6763: return $role;
6764: } elsif ($qualifier eq 'extent') {
6765: return $where;
6766: }
6767: # ----------------------------------------------------------------- user.domain
6768: } elsif ($space eq 'domain') {
6769: return $udom;
6770: # ------------------------------------------------------------------- user.name
6771: } elsif ($space eq 'name') {
6772: return $uname;
6773: # ---------------------------------------------------- Any other user namespace
6774: } else {
6775: my %reply;
6776: if (!$publicuser) {
6777: %reply=&get($space,[$qualifierrest],$udom,$uname);
6778: }
6779: return $reply{$qualifierrest};
6780: }
6781: } elsif ($realm eq 'query') {
6782: # ---------------------------------------------- pull stuff out of query string
6783: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
6784: [$spacequalifierrest]);
6785: return $env{'form.'.$spacequalifierrest};
6786: } elsif ($realm eq 'request') {
6787: # ------------------------------------------------------------- request.browser
6788: if ($space eq 'browser') {
6789: if ($qualifier eq 'textremote') {
6790: if (&Apache::lonlocal::mt('textual_remote_display') eq 'on') {
6791: return 1;
6792: } else {
6793: return 0;
6794: }
6795: } else {
6796: return $env{'browser.'.$qualifier};
6797: }
6798: # ------------------------------------------------------------ request.filename
6799: } else {
6800: return $env{'request.'.$spacequalifierrest};
6801: }
6802: } elsif ($realm eq 'course') {
6803: # ---------------------------------------------------------- course.description
6804: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
6805: } elsif ($realm eq 'resource') {
6806:
6807: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
6808: if (!$symbparm) { $symbparm=&symbread(); }
6809: }
6810:
6811: if ($space eq 'title') {
6812: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
6813: return &gettitle($symbparm);
6814: }
6815:
6816: if ($space eq 'map') {
6817: my ($map) = &decode_symb($symbparm);
6818: return &symbread($map);
6819: }
6820: if ($space eq 'filename') {
6821: if ($symbparm) {
6822: return &clutter((&decode_symb($symbparm))[2]);
6823: }
6824: return &hreflocation('',$env{'request.filename'});
6825: }
6826:
6827: my ($section, $group, @groups);
6828: my ($courselevelm,$courselevel);
6829: if ($symbparm && defined($courseid) &&
6830: $courseid eq $env{'request.course.id'}) {
6831:
6832: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
6833:
6834: # ----------------------------------------------------- Cascading lookup scheme
6835: my $symbp=$symbparm;
6836: my $mapp=&deversion((&decode_symb($symbp))[0]);
6837:
6838: my $symbparm=$symbp.'.'.$spacequalifierrest;
6839: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
6840:
6841: if (($env{'user.name'} eq $uname) &&
6842: ($env{'user.domain'} eq $udom)) {
6843: $section=$env{'request.course.sec'};
6844: @groups = split(/:/,$env{'request.course.groups'});
6845: @groups=&sort_course_groups($courseid,@groups);
6846: } else {
6847: if (! defined($usection)) {
6848: $section=&getsection($udom,$uname,$courseid);
6849: } else {
6850: $section = $usection;
6851: }
6852: @groups = &get_users_groups($udom,$uname,$courseid);
6853: }
6854:
6855: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
6856: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
6857: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
6858:
6859: $courselevel=$courseid.'.'.$spacequalifierrest;
6860: my $courselevelr=$courseid.'.'.$symbparm;
6861: $courselevelm=$courseid.'.'.$mapparm;
6862:
6863: # ----------------------------------------------------------- first, check user
6864:
6865: my $userreply=&resdata($uname,$udom,'user',
6866: ([$courselevelr,'resource'],
6867: [$courselevelm,'map' ],
6868: [$courselevel, 'course' ]));
6869: if (defined($userreply)) { return &get_reply($userreply); }
6870:
6871: # ------------------------------------------------ second, check some of course
6872: my $coursereply;
6873: if (@groups > 0) {
6874: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
6875: $mapparm,$spacequalifierrest);
6876: if (defined($coursereply)) { return &get_reply($coursereply); }
6877: }
6878:
6879: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
6880: $env{'course.'.$courseid.'.domain'},
6881: 'course',
6882: ([$seclevelr, 'resource'],
6883: [$seclevelm, 'map' ],
6884: [$seclevel, 'course' ],
6885: [$courselevelr,'resource']));
6886: if (defined($coursereply)) { return &get_reply($coursereply); }
6887:
6888: # ------------------------------------------------------ third, check map parms
6889: my %parmhash=();
6890: my $thisparm='';
6891: if (tie(%parmhash,'GDBM_File',
6892: $env{'request.course.fn'}.'_parms.db',
6893: &GDBM_READER(),0640)) {
6894: $thisparm=$parmhash{$symbparm};
6895: untie(%parmhash);
6896: }
6897: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
6898: }
6899: # ------------------------------------------ fourth, look in resource metadata
6900:
6901: $spacequalifierrest=~s/\./\_/;
6902: my $filename;
6903: if (!$symbparm) { $symbparm=&symbread(); }
6904: if ($symbparm) {
6905: $filename=(&decode_symb($symbparm))[2];
6906: } else {
6907: $filename=$env{'request.filename'};
6908: }
6909: my $metadata=&metadata($filename,$spacequalifierrest);
6910: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
6911: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
6912: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
6913:
6914: # ---------------------------------------------- fourth, look in rest of course
6915: if ($symbparm && defined($courseid) &&
6916: $courseid eq $env{'request.course.id'}) {
6917: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
6918: $env{'course.'.$courseid.'.domain'},
6919: 'course',
6920: ([$courselevelm,'map' ],
6921: [$courselevel, 'course']));
6922: if (defined($coursereply)) { return &get_reply($coursereply); }
6923: }
6924: # ------------------------------------------------------------------ Cascade up
6925: unless ($space eq '0') {
6926: my @parts=split(/_/,$space);
6927: my $id=pop(@parts);
6928: my $part=join('_',@parts);
6929: if ($part eq '') { $part='0'; }
6930: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
6931: $symbparm,$udom,$uname,$section,1);
6932: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
6933: }
6934: if ($recurse) { return undef; }
6935: my $pack_def=&packages_tab_default($filename,$varname);
6936: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
6937: # ---------------------------------------------------- Any other user namespace
6938: } elsif ($realm eq 'environment') {
6939: # ----------------------------------------------------------------- environment
6940: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
6941: return $env{'environment.'.$spacequalifierrest};
6942: } else {
6943: if ($uname eq 'anonymous' && $udom eq '') {
6944: return '';
6945: }
6946: my %returnhash=&userenvironment($udom,$uname,
6947: $spacequalifierrest);
6948: return $returnhash{$spacequalifierrest};
6949: }
6950: } elsif ($realm eq 'system') {
6951: # ----------------------------------------------------------------- system.time
6952: if ($space eq 'time') {
6953: return time;
6954: }
6955: } elsif ($realm eq 'server') {
6956: # ----------------------------------------------------------------- system.time
6957: if ($space eq 'name') {
6958: return $ENV{'SERVER_NAME'};
6959: }
6960: }
6961: return '';
6962: }
6963:
6964: sub get_reply {
6965: my ($reply_value) = @_;
6966: if (ref($reply_value) eq 'ARRAY') {
6967: if (wantarray) {
6968: return @$reply_value;
6969: }
6970: return $reply_value->[0];
6971: } else {
6972: return $reply_value;
6973: }
6974: }
6975:
6976: sub check_group_parms {
6977: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
6978: my @groupitems = ();
6979: my $resultitem;
6980: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
6981: foreach my $group (@{$groups}) {
6982: foreach my $level (@levels) {
6983: my $item = $courseid.'.['.$group.'].'.$level->[0];
6984: push(@groupitems,[$item,$level->[1]]);
6985: }
6986: }
6987: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
6988: $env{'course.'.$courseid.'.domain'},
6989: 'course',@groupitems);
6990: return $coursereply;
6991: }
6992:
6993: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
6994: my ($courseid,@groups) = @_;
6995: @groups = sort(@groups);
6996: return @groups;
6997: }
6998:
6999: sub packages_tab_default {
7000: my ($uri,$varname)=@_;
7001: my (undef,$part,$name)=split(/\./,$varname);
7002:
7003: my (@extension,@specifics,$do_default);
7004: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
7005: my ($pack_type,$pack_part)=split(/_/,$package,2);
7006: if ($pack_type eq 'default') {
7007: $do_default=1;
7008: } elsif ($pack_type eq 'extension') {
7009: push(@extension,[$package,$pack_type,$pack_part]);
7010: } elsif ($pack_part eq $part || $pack_type eq 'part') {
7011: # only look at packages defaults for packages that this id is
7012: push(@specifics,[$package,$pack_type,$pack_part]);
7013: }
7014: }
7015: # first look for a package that matches the requested part id
7016: foreach my $package (@specifics) {
7017: my (undef,$pack_type,$pack_part)=@{$package};
7018: next if ($pack_part ne $part);
7019: if (defined($packagetab{"$pack_type&$name&default"})) {
7020: return $packagetab{"$pack_type&$name&default"};
7021: }
7022: }
7023: # look for any possible matching non extension_ package
7024: foreach my $package (@specifics) {
7025: my (undef,$pack_type,$pack_part)=@{$package};
7026: if (defined($packagetab{"$pack_type&$name&default"})) {
7027: return $packagetab{"$pack_type&$name&default"};
7028: }
7029: if ($pack_type eq 'part') { $pack_part='0'; }
7030: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
7031: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
7032: }
7033: }
7034: # look for any posible extension_ match
7035: foreach my $package (@extension) {
7036: my ($package,$pack_type)=@{$package};
7037: if (defined($packagetab{"$pack_type&$name&default"})) {
7038: return $packagetab{"$pack_type&$name&default"};
7039: }
7040: if (defined($packagetab{$package."&$name&default"})) {
7041: return $packagetab{$package."&$name&default"};
7042: }
7043: }
7044: # look for a global default setting
7045: if ($do_default && defined($packagetab{"default&$name&default"})) {
7046: return $packagetab{"default&$name&default"};
7047: }
7048: return undef;
7049: }
7050:
7051: sub add_prefix_and_part {
7052: my ($prefix,$part)=@_;
7053: my $keyroot;
7054: if (defined($prefix) && $prefix !~ /^__/) {
7055: # prefix that has a part already
7056: $keyroot=$prefix;
7057: } elsif (defined($prefix)) {
7058: # prefix that is missing a part
7059: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
7060: } else {
7061: # no prefix at all
7062: if (defined($part)) { $keyroot='_'.$part; }
7063: }
7064: return $keyroot;
7065: }
7066:
7067: # ---------------------------------------------------------------- Get metadata
7068:
7069: my %metaentry;
7070: sub metadata {
7071: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
7072: $uri=&declutter($uri);
7073: # if it is a non metadata possible uri return quickly
7074: if (($uri eq '') ||
7075: (($uri =~ m|^/*adm/|) &&
7076: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
7077: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) ) {
7078: return undef;
7079: }
7080: if (($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/})
7081: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
7082: return undef;
7083: }
7084: my $filename=$uri;
7085: $uri=~s/\.meta$//;
7086: #
7087: # Is the metadata already cached?
7088: # Look at timestamp of caching
7089: # Everything is cached by the main uri, libraries are never directly cached
7090: #
7091: if (!defined($liburi)) {
7092: my ($result,$cached)=&is_cached_new('meta',$uri);
7093: if (defined($cached)) { return $result->{':'.$what}; }
7094: }
7095: {
7096: #
7097: # Is this a recursive call for a library?
7098: #
7099: # if (! exists($metacache{$uri})) {
7100: # $metacache{$uri}={};
7101: # }
7102: my $cachetime = 60*60;
7103: if ($liburi) {
7104: $liburi=&declutter($liburi);
7105: $filename=$liburi;
7106: } else {
7107: &devalidate_cache_new('meta',$uri);
7108: undef(%metaentry);
7109: }
7110: my %metathesekeys=();
7111: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
7112: my $metastring;
7113: if ($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/}) {
7114: my $which = &hreflocation('','/'.($liburi || $uri));
7115: $metastring =
7116: &Apache::lonnet::ssi_body($which,
7117: ('grade_target' => 'meta'));
7118: $cachetime = 1; # only want this cached in the child not long term
7119: } elsif ($uri !~ m -^(editupload)/-) {
7120: my $file=&filelocation('',&clutter($filename));
7121: #push(@{$metaentry{$uri.'.file'}},$file);
7122: $metastring=&getfile($file);
7123: }
7124: my $parser=HTML::LCParser->new(\$metastring);
7125: my $token;
7126: undef %metathesekeys;
7127: while ($token=$parser->get_token) {
7128: if ($token->[0] eq 'S') {
7129: if (defined($token->[2]->{'package'})) {
7130: #
7131: # This is a package - get package info
7132: #
7133: my $package=$token->[2]->{'package'};
7134: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
7135: if (defined($token->[2]->{'id'})) {
7136: $keyroot.='_'.$token->[2]->{'id'};
7137: }
7138: if ($metaentry{':packages'}) {
7139: $metaentry{':packages'}.=','.$package.$keyroot;
7140: } else {
7141: $metaentry{':packages'}=$package.$keyroot;
7142: }
7143: foreach my $pack_entry (keys(%packagetab)) {
7144: my $part=$keyroot;
7145: $part=~s/^\_//;
7146: if ($pack_entry=~/^\Q$package\E\&/ ||
7147: $pack_entry=~/^\Q$package\E_0\&/) {
7148: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
7149: # ignore package.tab specified default values
7150: # here &package_tab_default() will fetch those
7151: if ($subp eq 'default') { next; }
7152: my $value=$packagetab{$pack_entry};
7153: my $unikey;
7154: if ($pack =~ /_0$/) {
7155: $unikey='parameter_0_'.$name;
7156: $part=0;
7157: } else {
7158: $unikey='parameter'.$keyroot.'_'.$name;
7159: }
7160: if ($subp eq 'display') {
7161: $value.=' [Part: '.$part.']';
7162: }
7163: $metaentry{':'.$unikey.'.part'}=$part;
7164: $metathesekeys{$unikey}=1;
7165: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
7166: $metaentry{':'.$unikey.'.'.$subp}=$value;
7167: }
7168: if (defined($metaentry{':'.$unikey.'.default'})) {
7169: $metaentry{':'.$unikey}=
7170: $metaentry{':'.$unikey.'.default'};
7171: }
7172: }
7173: }
7174: } else {
7175: #
7176: # This is not a package - some other kind of start tag
7177: #
7178: my $entry=$token->[1];
7179: my $unikey;
7180: if ($entry eq 'import') {
7181: $unikey='';
7182: } else {
7183: $unikey=$entry;
7184: }
7185: $unikey.=&add_prefix_and_part($prefix,$token->[2]->{'part'});
7186:
7187: if (defined($token->[2]->{'id'})) {
7188: $unikey.='_'.$token->[2]->{'id'};
7189: }
7190:
7191: if ($entry eq 'import') {
7192: #
7193: # Importing a library here
7194: #
7195: if ($depthcount<20) {
7196: my $location=$parser->get_text('/import');
7197: my $dir=$filename;
7198: $dir=~s|[^/]*$||;
7199: $location=&filelocation($dir,$location);
7200: my $metadata =
7201: &metadata($uri,'keys', $location,$unikey,
7202: $depthcount+1);
7203: foreach my $meta (split(',',$metadata)) {
7204: $metaentry{':'.$meta}=$metaentry{':'.$meta};
7205: $metathesekeys{$meta}=1;
7206: }
7207: }
7208: } else {
7209:
7210: if (defined($token->[2]->{'name'})) {
7211: $unikey.='_'.$token->[2]->{'name'};
7212: }
7213: $metathesekeys{$unikey}=1;
7214: foreach my $param (@{$token->[3]}) {
7215: $metaentry{':'.$unikey.'.'.$param} =
7216: $token->[2]->{$param};
7217: }
7218: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
7219: my $default=$metaentry{':'.$unikey.'.default'};
7220: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
7221: # only ws inside the tag, and not in default, so use default
7222: # as value
7223: $metaentry{':'.$unikey}=$default;
7224: } elsif ( $internaltext =~ /\S/ ) {
7225: # something interesting inside the tag
7226: $metaentry{':'.$unikey}=$internaltext;
7227: } else {
7228: # no interesting values, don't set a default
7229: }
7230: # end of not-a-package not-a-library import
7231: }
7232: # end of not-a-package start tag
7233: }
7234: # the next is the end of "start tag"
7235: }
7236: }
7237: my ($extension) = ($uri =~ /\.(\w+)$/);
7238: $extension = lc($extension);
7239: if ($extension eq 'htm') { $extension='html'; }
7240:
7241: foreach my $key (keys(%packagetab)) {
7242: #no specific packages #how's our extension
7243: if ($key!~/^extension_\Q$extension\E&/) { next; }
7244: &metadata_create_package_def($uri,$key,'extension_'.$extension,
7245: \%metathesekeys);
7246: }
7247:
7248: if (!exists($metaentry{':packages'})
7249: || $packagetab{"import_defaults&extension_$extension"}) {
7250: foreach my $key (keys(%packagetab)) {
7251: #no specific packages well let's get default then
7252: if ($key!~/^default&/) { next; }
7253: &metadata_create_package_def($uri,$key,'default',
7254: \%metathesekeys);
7255: }
7256: }
7257: # are there custom rights to evaluate
7258: if ($metaentry{':copyright'} eq 'custom') {
7259:
7260: #
7261: # Importing a rights file here
7262: #
7263: unless ($depthcount) {
7264: my $location=$metaentry{':customdistributionfile'};
7265: my $dir=$filename;
7266: $dir=~s|[^/]*$||;
7267: $location=&filelocation($dir,$location);
7268: my $rights_metadata =
7269: &metadata($uri,'keys',$location,'_rights',
7270: $depthcount+1);
7271: foreach my $rights (split(',',$rights_metadata)) {
7272: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
7273: $metathesekeys{$rights}=1;
7274: }
7275: }
7276: }
7277: # uniqifiy package listing
7278: my %seen;
7279: my @uniq_packages =
7280: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
7281: $metaentry{':packages'} = join(',',@uniq_packages);
7282:
7283: $metaentry{':keys'} = join(',',keys(%metathesekeys));
7284: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
7285: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
7286: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
7287: # this is the end of "was not already recently cached
7288: }
7289: return $metaentry{':'.$what};
7290: }
7291:
7292: sub metadata_create_package_def {
7293: my ($uri,$key,$package,$metathesekeys)=@_;
7294: my ($pack,$name,$subp)=split(/\&/,$key);
7295: if ($subp eq 'default') { next; }
7296:
7297: if (defined($metaentry{':packages'})) {
7298: $metaentry{':packages'}.=','.$package;
7299: } else {
7300: $metaentry{':packages'}=$package;
7301: }
7302: my $value=$packagetab{$key};
7303: my $unikey;
7304: $unikey='parameter_0_'.$name;
7305: $metaentry{':'.$unikey.'.part'}=0;
7306: $$metathesekeys{$unikey}=1;
7307: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
7308: $metaentry{':'.$unikey.'.'.$subp}=$value;
7309: }
7310: if (defined($metaentry{':'.$unikey.'.default'})) {
7311: $metaentry{':'.$unikey}=
7312: $metaentry{':'.$unikey.'.default'};
7313: }
7314: }
7315:
7316: sub metadata_generate_part0 {
7317: my ($metadata,$metacache,$uri) = @_;
7318: my %allnames;
7319: foreach my $metakey (keys(%$metadata)) {
7320: if ($metakey=~/^parameter\_(.*)/) {
7321: my $part=$$metacache{':'.$metakey.'.part'};
7322: my $name=$$metacache{':'.$metakey.'.name'};
7323: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
7324: $allnames{$name}=$part;
7325: }
7326: }
7327: }
7328: foreach my $name (keys(%allnames)) {
7329: $$metadata{"parameter_0_$name"}=1;
7330: my $key=":parameter_0_$name";
7331: $$metacache{"$key.part"}='0';
7332: $$metacache{"$key.name"}=$name;
7333: $$metacache{"$key.type"}=$$metacache{':parameter_'.
7334: $allnames{$name}.'_'.$name.
7335: '.type'};
7336: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
7337: '.display'};
7338: my $expr='[Part: '.$allnames{$name}.']';
7339: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
7340: $$metacache{"$key.display"}=$olddis;
7341: }
7342: }
7343:
7344: # ------------------------------------------------------ Devalidate title cache
7345:
7346: sub devalidate_title_cache {
7347: my ($url)=@_;
7348: if (!$env{'request.course.id'}) { return; }
7349: my $symb=&symbread($url);
7350: if (!$symb) { return; }
7351: my $key=$env{'request.course.id'}."\0".$symb;
7352: &devalidate_cache_new('title',$key);
7353: }
7354:
7355: # ------------------------------------------------- Get the title of a resource
7356:
7357: sub gettitle {
7358: my $urlsymb=shift;
7359: my $symb=&symbread($urlsymb);
7360: if ($symb) {
7361: my $key=$env{'request.course.id'}."\0".$symb;
7362: my ($result,$cached)=&is_cached_new('title',$key);
7363: if (defined($cached)) {
7364: return $result;
7365: }
7366: my ($map,$resid,$url)=&decode_symb($symb);
7367: my $title='';
7368: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
7369: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
7370: } else {
7371: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7372: &GDBM_READER(),0640)) {
7373: my $mapid=$bighash{'map_pc_'.&clutter($map)};
7374: $title=$bighash{'title_'.$mapid.'.'.$resid};
7375: untie(%bighash);
7376: }
7377: }
7378: $title=~s/\&colon\;/\:/gs;
7379: if ($title) {
7380: return &do_cache_new('title',$key,$title,600);
7381: }
7382: $urlsymb=$url;
7383: }
7384: my $title=&metadata($urlsymb,'title');
7385: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
7386: return $title;
7387: }
7388:
7389: sub get_slot {
7390: my ($which,$cnum,$cdom)=@_;
7391: if (!$cnum || !$cdom) {
7392: (undef,my $courseid)=&whichuser();
7393: $cdom=$env{'course.'.$courseid.'.domain'};
7394: $cnum=$env{'course.'.$courseid.'.num'};
7395: }
7396: my $key=join("\0",'slots',$cdom,$cnum,$which);
7397: my %slotinfo;
7398: if (exists($remembered{$key})) {
7399: $slotinfo{$which} = $remembered{$key};
7400: } else {
7401: %slotinfo=&get('slots',[$which],$cdom,$cnum);
7402: &Apache::lonhomework::showhash(%slotinfo);
7403: my ($tmp)=keys(%slotinfo);
7404: if ($tmp=~/^error:/) { return (); }
7405: $remembered{$key} = $slotinfo{$which};
7406: }
7407: if (ref($slotinfo{$which}) eq 'HASH') {
7408: return %{$slotinfo{$which}};
7409: }
7410: return $slotinfo{$which};
7411: }
7412: # ------------------------------------------------- Update symbolic store links
7413:
7414: sub symblist {
7415: my ($mapname,%newhash)=@_;
7416: $mapname=&deversion(&declutter($mapname));
7417: my %hash;
7418: if (($env{'request.course.fn'}) && (%newhash)) {
7419: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
7420: &GDBM_WRCREAT(),0640)) {
7421: foreach my $url (keys %newhash) {
7422: next if ($url eq 'last_known'
7423: && $env{'form.no_update_last_known'});
7424: $hash{declutter($url)}=&encode_symb($mapname,
7425: $newhash{$url}->[1],
7426: $newhash{$url}->[0]);
7427: }
7428: if (untie(%hash)) {
7429: return 'ok';
7430: }
7431: }
7432: }
7433: return 'error';
7434: }
7435:
7436: # --------------------------------------------------------------- Verify a symb
7437:
7438: sub symbverify {
7439: my ($symb,$thisurl)=@_;
7440: my $thisfn=$thisurl;
7441: $thisfn=&declutter($thisfn);
7442: # direct jump to resource in page or to a sequence - will construct own symbs
7443: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
7444: # check URL part
7445: my ($map,$resid,$url)=&decode_symb($symb);
7446:
7447: unless ($url eq $thisfn) { return 0; }
7448:
7449: $symb=&symbclean($symb);
7450: $thisurl=&deversion($thisurl);
7451: $thisfn=&deversion($thisfn);
7452:
7453: my %bighash;
7454: my $okay=0;
7455:
7456: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7457: &GDBM_READER(),0640)) {
7458: my $ids=$bighash{'ids_'.&clutter($thisurl)};
7459: unless ($ids) {
7460: $ids=$bighash{'ids_/'.$thisurl};
7461: }
7462: if ($ids) {
7463: # ------------------------------------------------------------------- Has ID(s)
7464: foreach my $id (split(/\,/,$ids)) {
7465: my ($mapid,$resid)=split(/\./,$id);
7466: if (
7467: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
7468: eq $symb) {
7469: if (($env{'request.role.adv'}) ||
7470: $bighash{'encrypted_'.$id} eq $env{'request.enc'}) {
7471: $okay=1;
7472: }
7473: }
7474: }
7475: }
7476: untie(%bighash);
7477: }
7478: return $okay;
7479: }
7480:
7481: # --------------------------------------------------------------- Clean-up symb
7482:
7483: sub symbclean {
7484: my $symb=shift;
7485: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
7486: # remove version from map
7487: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
7488:
7489: # remove version from URL
7490: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
7491:
7492: # remove wrapper
7493:
7494: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
7495: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
7496: return $symb;
7497: }
7498:
7499: # ---------------------------------------------- Split symb to find map and url
7500:
7501: sub encode_symb {
7502: my ($map,$resid,$url)=@_;
7503: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
7504: }
7505:
7506: sub decode_symb {
7507: my $symb=shift;
7508: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
7509: my ($map,$resid,$url)=split(/___/,$symb);
7510: return (&fixversion($map),$resid,&fixversion($url));
7511: }
7512:
7513: sub fixversion {
7514: my $fn=shift;
7515: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
7516: my %bighash;
7517: my $uri=&clutter($fn);
7518: my $key=$env{'request.course.id'}.'_'.$uri;
7519: # is this cached?
7520: my ($result,$cached)=&is_cached_new('courseresversion',$key);
7521: if (defined($cached)) { return $result; }
7522: # unfortunately not cached, or expired
7523: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7524: &GDBM_READER(),0640)) {
7525: if ($bighash{'version_'.$uri}) {
7526: my $version=$bighash{'version_'.$uri};
7527: unless (($version eq 'mostrecent') ||
7528: ($version==&getversion($uri))) {
7529: $uri=~s/\.(\w+)$/\.$version\.$1/;
7530: }
7531: }
7532: untie %bighash;
7533: }
7534: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
7535: }
7536:
7537: sub deversion {
7538: my $url=shift;
7539: $url=~s/\.\d+\.(\w+)$/\.$1/;
7540: return $url;
7541: }
7542:
7543: # ------------------------------------------------------ Return symb list entry
7544:
7545: sub symbread {
7546: my ($thisfn,$donotrecurse)=@_;
7547: my $cache_str='request.symbread.cached.'.$thisfn;
7548: if (defined($env{$cache_str})) { return $env{$cache_str}; }
7549: # no filename provided? try from environment
7550: unless ($thisfn) {
7551: if ($env{'request.symb'}) {
7552: return $env{$cache_str}=&symbclean($env{'request.symb'});
7553: }
7554: $thisfn=$env{'request.filename'};
7555: }
7556: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
7557: # is that filename actually a symb? Verify, clean, and return
7558: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
7559: if (&symbverify($thisfn,$1)) {
7560: return $env{$cache_str}=&symbclean($thisfn);
7561: }
7562: }
7563: $thisfn=declutter($thisfn);
7564: my %hash;
7565: my %bighash;
7566: my $syval='';
7567: if (($env{'request.course.fn'}) && ($thisfn)) {
7568: my $targetfn = $thisfn;
7569: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
7570: $targetfn = 'adm/wrapper/'.$thisfn;
7571: }
7572: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
7573: $targetfn=$1;
7574: }
7575: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
7576: &GDBM_READER(),0640)) {
7577: $syval=$hash{$targetfn};
7578: untie(%hash);
7579: }
7580: # ---------------------------------------------------------- There was an entry
7581: if ($syval) {
7582: #unless ($syval=~/\_\d+$/) {
7583: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
7584: #&appenv({'request.ambiguous' => $thisfn});
7585: #return $env{$cache_str}='';
7586: #}
7587: #$syval.=$1;
7588: #}
7589: } else {
7590: # ------------------------------------------------------- Was not in symb table
7591: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7592: &GDBM_READER(),0640)) {
7593: # ---------------------------------------------- Get ID(s) for current resource
7594: my $ids=$bighash{'ids_'.&clutter($thisfn)};
7595: unless ($ids) {
7596: $ids=$bighash{'ids_/'.$thisfn};
7597: }
7598: unless ($ids) {
7599: # alias?
7600: $ids=$bighash{'mapalias_'.$thisfn};
7601: }
7602: if ($ids) {
7603: # ------------------------------------------------------------------- Has ID(s)
7604: my @possibilities=split(/\,/,$ids);
7605: if ($#possibilities==0) {
7606: # ----------------------------------------------- There is only one possibility
7607: my ($mapid,$resid)=split(/\./,$ids);
7608: $syval=&encode_symb($bighash{'map_id_'.$mapid},
7609: $resid,$thisfn);
7610: } elsif (!$donotrecurse) {
7611: # ------------------------------------------ There is more than one possibility
7612: my $realpossible=0;
7613: foreach my $id (@possibilities) {
7614: my $file=$bighash{'src_'.$id};
7615: if (&allowed('bre',$file)) {
7616: my ($mapid,$resid)=split(/\./,$id);
7617: if ($bighash{'map_type_'.$mapid} ne 'page') {
7618: $realpossible++;
7619: $syval=&encode_symb($bighash{'map_id_'.$mapid},
7620: $resid,$thisfn);
7621: }
7622: }
7623: }
7624: if ($realpossible!=1) { $syval=''; }
7625: } else {
7626: $syval='';
7627: }
7628: }
7629: untie(%bighash)
7630: }
7631: }
7632: if ($syval) {
7633: return $env{$cache_str}=$syval;
7634: }
7635: }
7636: &appenv({'request.ambiguous' => $thisfn});
7637: return $env{$cache_str}='';
7638: }
7639:
7640: # ---------------------------------------------------------- Return random seed
7641:
7642: sub numval {
7643: my $txt=shift;
7644: $txt=~tr/A-J/0-9/;
7645: $txt=~tr/a-j/0-9/;
7646: $txt=~tr/K-T/0-9/;
7647: $txt=~tr/k-t/0-9/;
7648: $txt=~tr/U-Z/0-5/;
7649: $txt=~tr/u-z/0-5/;
7650: $txt=~s/\D//g;
7651: if ($_64bit) { if ($txt > 2**32) { return -1; } }
7652: return int($txt);
7653: }
7654:
7655: sub numval2 {
7656: my $txt=shift;
7657: $txt=~tr/A-J/0-9/;
7658: $txt=~tr/a-j/0-9/;
7659: $txt=~tr/K-T/0-9/;
7660: $txt=~tr/k-t/0-9/;
7661: $txt=~tr/U-Z/0-5/;
7662: $txt=~tr/u-z/0-5/;
7663: $txt=~s/\D//g;
7664: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
7665: my $total;
7666: foreach my $val (@txts) { $total+=$val; }
7667: if ($_64bit) { if ($total > 2**32) { return -1; } }
7668: return int($total);
7669: }
7670:
7671: sub numval3 {
7672: use integer;
7673: my $txt=shift;
7674: $txt=~tr/A-J/0-9/;
7675: $txt=~tr/a-j/0-9/;
7676: $txt=~tr/K-T/0-9/;
7677: $txt=~tr/k-t/0-9/;
7678: $txt=~tr/U-Z/0-5/;
7679: $txt=~tr/u-z/0-5/;
7680: $txt=~s/\D//g;
7681: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
7682: my $total;
7683: foreach my $val (@txts) { $total+=$val; }
7684: if ($_64bit) { $total=(($total<<32)>>32); }
7685: return $total;
7686: }
7687:
7688: sub digest {
7689: my ($data)=@_;
7690: my $digest=&Digest::MD5::md5($data);
7691: my ($a,$b,$c,$d)=unpack("iiii",$digest);
7692: my ($e,$f);
7693: {
7694: use integer;
7695: $e=($a+$b);
7696: $f=($c+$d);
7697: if ($_64bit) {
7698: $e=(($e<<32)>>32);
7699: $f=(($f<<32)>>32);
7700: }
7701: }
7702: if (wantarray) {
7703: return ($e,$f);
7704: } else {
7705: my $g;
7706: {
7707: use integer;
7708: $g=($e+$f);
7709: if ($_64bit) {
7710: $g=(($g<<32)>>32);
7711: }
7712: }
7713: return $g;
7714: }
7715: }
7716:
7717: sub latest_rnd_algorithm_id {
7718: return '64bit5';
7719: }
7720:
7721: sub get_rand_alg {
7722: my ($courseid)=@_;
7723: if (!$courseid) { $courseid=(&whichuser())[1]; }
7724: if ($courseid) {
7725: return $env{"course.$courseid.rndseed"};
7726: }
7727: return &latest_rnd_algorithm_id();
7728: }
7729:
7730: sub validCODE {
7731: my ($CODE)=@_;
7732: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
7733: return 0;
7734: }
7735:
7736: sub getCODE {
7737: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
7738: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
7739: defined($Apache::lonhomework::parsing_a_task) ) &&
7740: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
7741: return $Apache::lonhomework::history{'resource.CODE'};
7742: }
7743: return undef;
7744: }
7745:
7746: sub rndseed {
7747: my ($symb,$courseid,$domain,$username)=@_;
7748: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
7749: if (!defined($symb)) {
7750: unless ($symb=$wsymb) { return time; }
7751: }
7752: if (!$courseid) { $courseid=$wcourseid; }
7753: if (!$domain) { $domain=$wdomain; }
7754: if (!$username) { $username=$wusername }
7755: my $which=&get_rand_alg();
7756:
7757: if (defined(&getCODE())) {
7758: if ($which eq '64bit5') {
7759: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
7760: } elsif ($which eq '64bit4') {
7761: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
7762: } else {
7763: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
7764: }
7765: } elsif ($which eq '64bit5') {
7766: return &rndseed_64bit5($symb,$courseid,$domain,$username);
7767: } elsif ($which eq '64bit4') {
7768: return &rndseed_64bit4($symb,$courseid,$domain,$username);
7769: } elsif ($which eq '64bit3') {
7770: return &rndseed_64bit3($symb,$courseid,$domain,$username);
7771: } elsif ($which eq '64bit2') {
7772: return &rndseed_64bit2($symb,$courseid,$domain,$username);
7773: } elsif ($which eq '64bit') {
7774: return &rndseed_64bit($symb,$courseid,$domain,$username);
7775: }
7776: return &rndseed_32bit($symb,$courseid,$domain,$username);
7777: }
7778:
7779: sub rndseed_32bit {
7780: my ($symb,$courseid,$domain,$username)=@_;
7781: {
7782: use integer;
7783: my $symbchck=unpack("%32C*",$symb) << 27;
7784: my $symbseed=numval($symb) << 22;
7785: my $namechck=unpack("%32C*",$username) << 17;
7786: my $nameseed=numval($username) << 12;
7787: my $domainseed=unpack("%32C*",$domain) << 7;
7788: my $courseseed=unpack("%32C*",$courseid);
7789: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
7790: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7791: #&logthis("rndseed :$num:$symb");
7792: if ($_64bit) { $num=(($num<<32)>>32); }
7793: return $num;
7794: }
7795: }
7796:
7797: sub rndseed_64bit {
7798: my ($symb,$courseid,$domain,$username)=@_;
7799: {
7800: use integer;
7801: my $symbchck=unpack("%32S*",$symb) << 21;
7802: my $symbseed=numval($symb) << 10;
7803: my $namechck=unpack("%32S*",$username);
7804:
7805: my $nameseed=numval($username) << 21;
7806: my $domainseed=unpack("%32S*",$domain) << 10;
7807: my $courseseed=unpack("%32S*",$courseid);
7808:
7809: my $num1=$symbchck+$symbseed+$namechck;
7810: my $num2=$nameseed+$domainseed+$courseseed;
7811: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7812: #&logthis("rndseed :$num:$symb");
7813: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7814: return "$num1,$num2";
7815: }
7816: }
7817:
7818: sub rndseed_64bit2 {
7819: my ($symb,$courseid,$domain,$username)=@_;
7820: {
7821: use integer;
7822: # strings need to be an even # of cahracters long, it it is odd the
7823: # last characters gets thrown away
7824: my $symbchck=unpack("%32S*",$symb.' ') << 21;
7825: my $symbseed=numval($symb) << 10;
7826: my $namechck=unpack("%32S*",$username.' ');
7827:
7828: my $nameseed=numval($username) << 21;
7829: my $domainseed=unpack("%32S*",$domain.' ') << 10;
7830: my $courseseed=unpack("%32S*",$courseid.' ');
7831:
7832: my $num1=$symbchck+$symbseed+$namechck;
7833: my $num2=$nameseed+$domainseed+$courseseed;
7834: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7835: #&logthis("rndseed :$num:$symb");
7836: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7837: return "$num1,$num2";
7838: }
7839: }
7840:
7841: sub rndseed_64bit3 {
7842: my ($symb,$courseid,$domain,$username)=@_;
7843: {
7844: use integer;
7845: # strings need to be an even # of cahracters long, it it is odd the
7846: # last characters gets thrown away
7847: my $symbchck=unpack("%32S*",$symb.' ') << 21;
7848: my $symbseed=numval2($symb) << 10;
7849: my $namechck=unpack("%32S*",$username.' ');
7850:
7851: my $nameseed=numval2($username) << 21;
7852: my $domainseed=unpack("%32S*",$domain.' ') << 10;
7853: my $courseseed=unpack("%32S*",$courseid.' ');
7854:
7855: my $num1=$symbchck+$symbseed+$namechck;
7856: my $num2=$nameseed+$domainseed+$courseseed;
7857: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7858: #&logthis("rndseed :$num1:$num2:$_64bit");
7859: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7860:
7861: return "$num1:$num2";
7862: }
7863: }
7864:
7865: sub rndseed_64bit4 {
7866: my ($symb,$courseid,$domain,$username)=@_;
7867: {
7868: use integer;
7869: # strings need to be an even # of cahracters long, it it is odd the
7870: # last characters gets thrown away
7871: my $symbchck=unpack("%32S*",$symb.' ') << 21;
7872: my $symbseed=numval3($symb) << 10;
7873: my $namechck=unpack("%32S*",$username.' ');
7874:
7875: my $nameseed=numval3($username) << 21;
7876: my $domainseed=unpack("%32S*",$domain.' ') << 10;
7877: my $courseseed=unpack("%32S*",$courseid.' ');
7878:
7879: my $num1=$symbchck+$symbseed+$namechck;
7880: my $num2=$nameseed+$domainseed+$courseseed;
7881: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7882: #&logthis("rndseed :$num1:$num2:$_64bit");
7883: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7884:
7885: return "$num1:$num2";
7886: }
7887: }
7888:
7889: sub rndseed_64bit5 {
7890: my ($symb,$courseid,$domain,$username)=@_;
7891: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
7892: return "$num1:$num2";
7893: }
7894:
7895: sub rndseed_CODE_64bit {
7896: my ($symb,$courseid,$domain,$username)=@_;
7897: {
7898: use integer;
7899: my $symbchck=unpack("%32S*",$symb.' ') << 16;
7900: my $symbseed=numval2($symb);
7901: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
7902: my $CODEseed=numval(&getCODE());
7903: my $courseseed=unpack("%32S*",$courseid.' ');
7904: my $num1=$symbseed+$CODEchck;
7905: my $num2=$CODEseed+$courseseed+$symbchck;
7906: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
7907: #&logthis("rndseed :$num1:$num2:$symb");
7908: if ($_64bit) { $num1=(($num1<<32)>>32); }
7909: if ($_64bit) { $num2=(($num2<<32)>>32); }
7910: return "$num1:$num2";
7911: }
7912: }
7913:
7914: sub rndseed_CODE_64bit4 {
7915: my ($symb,$courseid,$domain,$username)=@_;
7916: {
7917: use integer;
7918: my $symbchck=unpack("%32S*",$symb.' ') << 16;
7919: my $symbseed=numval3($symb);
7920: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
7921: my $CODEseed=numval3(&getCODE());
7922: my $courseseed=unpack("%32S*",$courseid.' ');
7923: my $num1=$symbseed+$CODEchck;
7924: my $num2=$CODEseed+$courseseed+$symbchck;
7925: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
7926: #&logthis("rndseed :$num1:$num2:$symb");
7927: if ($_64bit) { $num1=(($num1<<32)>>32); }
7928: if ($_64bit) { $num2=(($num2<<32)>>32); }
7929: return "$num1:$num2";
7930: }
7931: }
7932:
7933: sub rndseed_CODE_64bit5 {
7934: my ($symb,$courseid,$domain,$username)=@_;
7935: my $code = &getCODE();
7936: my ($num1,$num2)=&digest("$symb,$courseid,$code");
7937: return "$num1:$num2";
7938: }
7939:
7940: sub setup_random_from_rndseed {
7941: my ($rndseed)=@_;
7942: if ($rndseed =~/([,:])/) {
7943: my ($num1,$num2)=split(/[,:]/,$rndseed);
7944: &Math::Random::random_set_seed(abs($num1),abs($num2));
7945: } else {
7946: &Math::Random::random_set_seed_from_phrase($rndseed);
7947: }
7948: }
7949:
7950: sub latest_receipt_algorithm_id {
7951: return 'receipt3';
7952: }
7953:
7954: sub recunique {
7955: my $fucourseid=shift;
7956: my $unique;
7957: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
7958: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
7959: $unique=$env{"course.$fucourseid.internal.encseed"};
7960: } else {
7961: $unique=$perlvar{'lonReceipt'};
7962: }
7963: return unpack("%32C*",$unique);
7964: }
7965:
7966: sub recprefix {
7967: my $fucourseid=shift;
7968: my $prefix;
7969: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
7970: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
7971: $prefix=$env{"course.$fucourseid.internal.encpref"};
7972: } else {
7973: $prefix=$perlvar{'lonHostID'};
7974: }
7975: return unpack("%32C*",$prefix);
7976: }
7977:
7978: sub ireceipt {
7979: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
7980:
7981: my $return =&recprefix($fucourseid).'-';
7982:
7983: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
7984: $env{'request.state'} eq 'construct') {
7985: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
7986: return $return;
7987: }
7988:
7989: my $cuname=unpack("%32C*",$funame);
7990: my $cudom=unpack("%32C*",$fudom);
7991: my $cucourseid=unpack("%32C*",$fucourseid);
7992: my $cusymb=unpack("%32C*",$fusymb);
7993: my $cunique=&recunique($fucourseid);
7994: my $cpart=unpack("%32S*",$part);
7995: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
7996:
7997: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
7998:
7999: $return.= ($cunique%$cuname+
8000: $cunique%$cudom+
8001: $cusymb%$cuname+
8002: $cusymb%$cudom+
8003: $cucourseid%$cuname+
8004: $cucourseid%$cudom+
8005: $cpart%$cuname+
8006: $cpart%$cudom);
8007: } else {
8008: $return.= ($cunique%$cuname+
8009: $cunique%$cudom+
8010: $cusymb%$cuname+
8011: $cusymb%$cudom+
8012: $cucourseid%$cuname+
8013: $cucourseid%$cudom);
8014: }
8015: return $return;
8016: }
8017:
8018: sub receipt {
8019: my ($part)=@_;
8020: my ($symb,$courseid,$domain,$name) = &whichuser();
8021: return &ireceipt($name,$domain,$courseid,$symb,$part);
8022: }
8023:
8024: sub whichuser {
8025: my ($passedsymb)=@_;
8026: my ($symb,$courseid,$domain,$name,$publicuser);
8027: if (defined($env{'form.grade_symb'})) {
8028: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
8029: my $allowed=&allowed('vgr',$tmp_courseid);
8030: if (!$allowed &&
8031: exists($env{'request.course.sec'}) &&
8032: $env{'request.course.sec'} !~ /^\s*$/) {
8033: $allowed=&allowed('vgr',$tmp_courseid.
8034: '/'.$env{'request.course.sec'});
8035: }
8036: if ($allowed) {
8037: ($symb)=&get_env_multiple('form.grade_symb');
8038: $courseid=$tmp_courseid;
8039: ($domain)=&get_env_multiple('form.grade_domain');
8040: ($name)=&get_env_multiple('form.grade_username');
8041: return ($symb,$courseid,$domain,$name,$publicuser);
8042: }
8043: }
8044: if (!$passedsymb) {
8045: $symb=&symbread();
8046: } else {
8047: $symb=$passedsymb;
8048: }
8049: $courseid=$env{'request.course.id'};
8050: $domain=$env{'user.domain'};
8051: $name=$env{'user.name'};
8052: if ($name eq 'public' && $domain eq 'public') {
8053: if (!defined($env{'form.username'})) {
8054: $env{'form.username'}.=time.rand(10000000);
8055: }
8056: $name.=$env{'form.username'};
8057: }
8058: return ($symb,$courseid,$domain,$name,$publicuser);
8059:
8060: }
8061:
8062: # ------------------------------------------------------------ Serves up a file
8063: # returns either the contents of the file or
8064: # -1 if the file doesn't exist
8065: #
8066: # if the target is a file that was uploaded via DOCS,
8067: # a check will be made to see if a current copy exists on the local server,
8068: # if it does this will be served, otherwise a copy will be retrieved from
8069: # the home server for the course and stored in /home/httpd/html/userfiles on
8070: # the local server.
8071:
8072: sub getfile {
8073: my ($file) = @_;
8074: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
8075: &repcopy($file);
8076: return &readfile($file);
8077: }
8078:
8079: sub repcopy_userfile {
8080: my ($file)=@_;
8081: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
8082: if ($file =~ m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
8083: my ($cdom,$cnum,$filename) =
8084: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
8085: my $uri="/uploaded/$cdom/$cnum/$filename";
8086: if (-e "$file") {
8087: # we already have a local copy, check it out
8088: my @fileinfo = stat($file);
8089: my $rtncode;
8090: my $info;
8091: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
8092: if ($lwpresp ne 'ok') {
8093: # there is no such file anymore, even though we had a local copy
8094: if ($rtncode eq '404') {
8095: unlink($file);
8096: }
8097: return -1;
8098: }
8099: if ($info < $fileinfo[9]) {
8100: # nice, the file we have is up-to-date, just say okay
8101: return 'ok';
8102: } else {
8103: # the file is outdated, get rid of it
8104: unlink($file);
8105: }
8106: }
8107: # one way or the other, at this point, we don't have the file
8108: # construct the correct path for the file
8109: my @parts = ($cdom,$cnum);
8110: if ($filename =~ m|^(.+)/[^/]+$|) {
8111: push @parts, split(/\//,$1);
8112: }
8113: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
8114: foreach my $part (@parts) {
8115: $path .= '/'.$part;
8116: if (!-e $path) {
8117: mkdir($path,0770);
8118: }
8119: }
8120: # now the path exists for sure
8121: # get a user agent
8122: my $ua=new LWP::UserAgent;
8123: my $transferfile=$file.'.in.transfer';
8124: # FIXME: this should flock
8125: if (-e $transferfile) { return 'ok'; }
8126: my $request;
8127: $uri=~s/^\///;
8128: $request=new HTTP::Request('GET','http://'.&hostname(&homeserver($cnum,$cdom)).'/raw/'.$uri);
8129: my $response=$ua->request($request,$transferfile);
8130: # did it work?
8131: if ($response->is_error()) {
8132: unlink($transferfile);
8133: &logthis("Userfile repcopy failed for $uri");
8134: return -1;
8135: }
8136: # worked, rename the transfer file
8137: rename($transferfile,$file);
8138: return 'ok';
8139: }
8140:
8141: sub tokenwrapper {
8142: my $uri=shift;
8143: $uri=~s|^http\://([^/]+)||;
8144: $uri=~s|^/||;
8145: $env{'user.environment'}=~/\/([^\/]+)\.id/;
8146: my $token=$1;
8147: my (undef,$udom,$uname,$file)=split('/',$uri,4);
8148: if ($udom && $uname && $file) {
8149: $file=~s|(\?\.*)*$||;
8150: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
8151: return 'http://'.&hostname(&homeserver($uname,$udom)).'/'.$uri.
8152: (($uri=~/\?/)?'&':'?').'token='.$token.
8153: '&tokenissued='.$perlvar{'lonHostID'};
8154: } else {
8155: return '/adm/notfound.html';
8156: }
8157: }
8158:
8159: # call with reqtype HEAD: get last modification time
8160: # call with reqtype GET: get the file contents
8161: # Do not call this with reqtype GET for large files! It loads everything into memory
8162: #
8163: sub getuploaded {
8164: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
8165: $uri=~s/^\///;
8166: $uri = 'http://'.&hostname(&homeserver($cnum,$cdom)).'/raw/'.$uri;
8167: my $ua=new LWP::UserAgent;
8168: my $request=new HTTP::Request($reqtype,$uri);
8169: my $response=$ua->request($request);
8170: $$rtncode = $response->code;
8171: if (! $response->is_success()) {
8172: return 'failed';
8173: }
8174: if ($reqtype eq 'HEAD') {
8175: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
8176: } elsif ($reqtype eq 'GET') {
8177: $$info = $response->content;
8178: }
8179: return 'ok';
8180: }
8181:
8182: sub readfile {
8183: my $file = shift;
8184: if ( (! -e $file ) || ($file eq '') ) { return -1; };
8185: my $fh;
8186: open($fh,"<$file");
8187: my $a='';
8188: while (my $line = <$fh>) { $a .= $line; }
8189: return $a;
8190: }
8191:
8192: sub filelocation {
8193: my ($dir,$file) = @_;
8194: my $location;
8195: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
8196:
8197: if ($file =~ m-^/adm/-) {
8198: $file=~s-^/adm/wrapper/-/-;
8199: $file=~s-^/adm/coursedocs/showdoc/-/-;
8200: }
8201:
8202: if ($file=~m:^/~:) { # is a contruction space reference
8203: $location = $file;
8204: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
8205: } elsif ($file=~m{^/home/$match_username/public_html/}) {
8206: # is a correct contruction space reference
8207: $location = $file;
8208: } elsif ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
8209: $location = $file;
8210: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
8211: my ($udom,$uname,$filename)=
8212: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
8213: my $home=&homeserver($uname,$udom);
8214: my $is_me=0;
8215: my @ids=¤t_machine_ids();
8216: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
8217: if ($is_me) {
8218: $location=&propath($udom,$uname).'/userfiles/'.$filename;
8219: } else {
8220: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
8221: $udom.'/'.$uname.'/'.$filename;
8222: }
8223: } elsif ($file =~ m-^/adm/-) {
8224: $location = $perlvar{'lonDocRoot'}.'/'.$file;
8225: } else {
8226: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
8227: $file=~s:^/res/:/:;
8228: if ( !( $file =~ m:^/:) ) {
8229: $location = $dir. '/'.$file;
8230: } else {
8231: $location = '/home/httpd/html/res'.$file;
8232: }
8233: }
8234: $location=~s://+:/:g; # remove duplicate /
8235: while ($location=~m{/\.\./}) {
8236: if ($location =~ m{/[^/]+/\.\./}) {
8237: $location=~ s{/[^/]+/\.\./}{/}g;
8238: } else {
8239: $location=~ s{/\.\./}{/}g;
8240: }
8241: } #remove dir/..
8242: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
8243: return $location;
8244: }
8245:
8246: sub hreflocation {
8247: my ($dir,$file)=@_;
8248: unless (($file=~m-^http://-i) || ($file=~m-^/-)) {
8249: $file=filelocation($dir,$file);
8250: } elsif ($file=~m-^/adm/-) {
8251: $file=~s-^/adm/wrapper/-/-;
8252: $file=~s-^/adm/coursedocs/showdoc/-/-;
8253: }
8254: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
8255: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
8256: } elsif ($file=~m-/home/($match_username)/public_html/-) {
8257: $file=~s-^/home/($match_username)/public_html/-/~$1/-;
8258: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
8259: $file=~s-^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/
8260: -/uploaded/$1/$2/-x;
8261: }
8262: if ($file=~ m{^/userfiles/}) {
8263: $file =~ s{^/userfiles/}{/uploaded/};
8264: }
8265: return $file;
8266: }
8267:
8268: sub current_machine_domains {
8269: return &machine_domains(&hostname($perlvar{'lonHostID'}));
8270: }
8271:
8272: sub machine_domains {
8273: my ($hostname) = @_;
8274: my @domains;
8275: my %hostname = &all_hostnames();
8276: while( my($id, $name) = each(%hostname)) {
8277: # &logthis("-$id-$name-$hostname-");
8278: if ($hostname eq $name) {
8279: push(@domains,&host_domain($id));
8280: }
8281: }
8282: return @domains;
8283: }
8284:
8285: sub current_machine_ids {
8286: return &machine_ids(&hostname($perlvar{'lonHostID'}));
8287: }
8288:
8289: sub machine_ids {
8290: my ($hostname) = @_;
8291: $hostname ||= &hostname($perlvar{'lonHostID'});
8292: my @ids;
8293: my %name_to_host = &all_names();
8294: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
8295: return @{ $name_to_host{$hostname} };
8296: }
8297: return;
8298: }
8299:
8300: sub additional_machine_domains {
8301: my @domains;
8302: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
8303: while( my $line = <$fh>) {
8304: $line =~ s/\s//g;
8305: push(@domains,$line);
8306: }
8307: return @domains;
8308: }
8309:
8310: sub default_login_domain {
8311: my $domain = $perlvar{'lonDefDomain'};
8312: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
8313: foreach my $posdom (¤t_machine_domains(),
8314: &additional_machine_domains()) {
8315: if (lc($posdom) eq lc($testdomain)) {
8316: $domain=$posdom;
8317: last;
8318: }
8319: }
8320: return $domain;
8321: }
8322:
8323: # ------------------------------------------------------------- Declutters URLs
8324:
8325: sub declutter {
8326: my $thisfn=shift;
8327: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
8328: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
8329: $thisfn=~s/^\///;
8330: $thisfn=~s|^adm/wrapper/||;
8331: $thisfn=~s|^adm/coursedocs/showdoc/||;
8332: $thisfn=~s/^res\///;
8333: $thisfn=~s/\?.+$//;
8334: return $thisfn;
8335: }
8336:
8337: # ------------------------------------------------------------- Clutter up URLs
8338:
8339: sub clutter {
8340: my $thisfn='/'.&declutter(shift);
8341: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
8342: || $thisfn =~ m{^/adm/(includes|pages)} ) {
8343: $thisfn='/res'.$thisfn;
8344: }
8345: if ($thisfn !~m|/adm|) {
8346: if ($thisfn =~ m|/ext/|) {
8347: $thisfn='/adm/wrapper'.$thisfn;
8348: } else {
8349: my ($ext) = ($thisfn =~ /\.(\w+)$/);
8350: my $embstyle=&Apache::loncommon::fileembstyle($ext);
8351: if ($embstyle eq 'ssi'
8352: || ($embstyle eq 'hdn')
8353: || ($embstyle eq 'rat')
8354: || ($embstyle eq 'prv')
8355: || ($embstyle eq 'ign')) {
8356: #do nothing with these
8357: } elsif (($embstyle eq 'img')
8358: || ($embstyle eq 'emb')
8359: || ($embstyle eq 'wrp')) {
8360: $thisfn='/adm/wrapper'.$thisfn;
8361: } elsif ($embstyle eq 'unk'
8362: && $thisfn!~/\.(sequence|page)$/) {
8363: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
8364: } else {
8365: # &logthis("Got a blank emb style");
8366: }
8367: }
8368: }
8369: return $thisfn;
8370: }
8371:
8372: sub clutter_with_no_wrapper {
8373: my $uri = &clutter(shift);
8374: if ($uri =~ m-^/adm/-) {
8375: $uri =~ s-^/adm/wrapper/-/-;
8376: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
8377: }
8378: return $uri;
8379: }
8380:
8381: sub freeze_escape {
8382: my ($value)=@_;
8383: if (ref($value)) {
8384: $value=&nfreeze($value);
8385: return '__FROZEN__'.&escape($value);
8386: }
8387: return &escape($value);
8388: }
8389:
8390:
8391: sub thaw_unescape {
8392: my ($value)=@_;
8393: if ($value =~ /^__FROZEN__/) {
8394: substr($value,0,10,undef);
8395: $value=&unescape($value);
8396: return &thaw($value);
8397: }
8398: return &unescape($value);
8399: }
8400:
8401: sub correct_line_ends {
8402: my ($result)=@_;
8403: $$result =~s/\r\n/\n/mg;
8404: $$result =~s/\r/\n/mg;
8405: }
8406: # ================================================================ Main Program
8407:
8408: sub goodbye {
8409: &logthis("Starting Shut down");
8410: #not converted to using infrastruture and probably shouldn't be
8411: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
8412: #converted
8413: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
8414: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
8415: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
8416: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
8417: #1.1 only
8418: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
8419: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
8420: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
8421: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
8422: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
8423: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
8424: &logthis(sprintf("%-20s is %s",'hits',$hits));
8425: &flushcourselogs();
8426: &logthis("Shutting down");
8427: }
8428:
8429: sub get_dns {
8430: my ($url,$func,$ignore_cache) = @_;
8431: if (!$ignore_cache) {
8432: my ($content,$cached)=
8433: &Apache::lonnet::is_cached_new('dns',$url);
8434: if ($cached) {
8435: &$func($content);
8436: return;
8437: }
8438: }
8439:
8440: my %alldns;
8441: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
8442: foreach my $dns (<$config>) {
8443: next if ($dns !~ /^\^(\S*)/x);
8444: $alldns{$1} = 1;
8445: }
8446: while (%alldns) {
8447: my ($dns) = keys(%alldns);
8448: delete($alldns{$dns});
8449: my $ua=new LWP::UserAgent;
8450: my $request=new HTTP::Request('GET',"http://$dns$url");
8451: my $response=$ua->request($request);
8452: next if ($response->is_error());
8453: my @content = split("\n",$response->content);
8454: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
8455: &$func(\@content);
8456: return;
8457: }
8458: close($config);
8459: my $which = (split('/',$url))[3];
8460: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
8461: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
8462: my @content = <$config>;
8463: &$func(\@content);
8464: return;
8465: }
8466: # ------------------------------------------------------------ Read domain file
8467: {
8468: my $loaded;
8469: my %domain;
8470:
8471: sub parse_domain_tab {
8472: my ($lines) = @_;
8473: foreach my $line (@$lines) {
8474: next if ($line =~ /^(\#|\s*$ )/x);
8475:
8476: chomp($line);
8477: my ($name,@elements) = split(/:/,$line,9);
8478: my %this_domain;
8479: foreach my $field ('description', 'auth_def', 'auth_arg_def',
8480: 'lang_def', 'city', 'longi', 'lati',
8481: 'primary') {
8482: $this_domain{$field} = shift(@elements);
8483: }
8484: $domain{$name} = \%this_domain;
8485: }
8486: }
8487:
8488: sub reset_domain_info {
8489: undef($loaded);
8490: undef(%domain);
8491: }
8492:
8493: sub load_domain_tab {
8494: my ($ignore_cache) = @_;
8495: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
8496: my $fh;
8497: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
8498: my @lines = <$fh>;
8499: &parse_domain_tab(\@lines);
8500: }
8501: close($fh);
8502: $loaded = 1;
8503: }
8504:
8505: sub domain {
8506: &load_domain_tab() if (!$loaded);
8507:
8508: my ($name,$what) = @_;
8509: return if ( !exists($domain{$name}) );
8510:
8511: if (!$what) {
8512: return $domain{$name}{'description'};
8513: }
8514: return $domain{$name}{$what};
8515: }
8516: }
8517:
8518:
8519: # ------------------------------------------------------------- Read hosts file
8520: {
8521: my %hostname;
8522: my %hostdom;
8523: my %libserv;
8524: my $loaded;
8525: my %name_to_host;
8526:
8527: sub parse_hosts_tab {
8528: my ($file) = @_;
8529: foreach my $configline (@$file) {
8530: next if ($configline =~ /^(\#|\s*$ )/x);
8531: next if ($configline =~ /^\^/);
8532: chomp($configline);
8533: my ($id,$domain,$role,$name)=split(/:/,$configline);
8534: $name=~s/\s//g;
8535: if ($id && $domain && $role && $name) {
8536: $hostname{$id}=$name;
8537: push(@{$name_to_host{$name}}, $id);
8538: $hostdom{$id}=$domain;
8539: if ($role eq 'library') { $libserv{$id}=$name; }
8540: }
8541: }
8542: }
8543:
8544: sub reset_hosts_info {
8545: &purge_remembered();
8546: &reset_domain_info();
8547: &reset_hosts_ip_info();
8548: undef(%name_to_host);
8549: undef(%hostname);
8550: undef(%hostdom);
8551: undef(%libserv);
8552: undef($loaded);
8553: }
8554:
8555: sub load_hosts_tab {
8556: my ($ignore_cache) = @_;
8557: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
8558: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
8559: my @config = <$config>;
8560: &parse_hosts_tab(\@config);
8561: close($config);
8562: $loaded=1;
8563: }
8564:
8565: sub hostname {
8566: &load_hosts_tab() if (!$loaded);
8567:
8568: my ($lonid) = @_;
8569: return $hostname{$lonid};
8570: }
8571:
8572: sub all_hostnames {
8573: &load_hosts_tab() if (!$loaded);
8574:
8575: return %hostname;
8576: }
8577:
8578: sub all_names {
8579: &load_hosts_tab() if (!$loaded);
8580:
8581: return %name_to_host;
8582: }
8583:
8584: sub is_library {
8585: &load_hosts_tab() if (!$loaded);
8586:
8587: return exists($libserv{$_[0]});
8588: }
8589:
8590: sub all_library {
8591: &load_hosts_tab() if (!$loaded);
8592:
8593: return %libserv;
8594: }
8595:
8596: sub get_servers {
8597: &load_hosts_tab() if (!$loaded);
8598:
8599: my ($domain,$type) = @_;
8600: my %possible_hosts = ($type eq 'library') ? %libserv
8601: : %hostname;
8602: my %result;
8603: if (ref($domain) eq 'ARRAY') {
8604: while ( my ($host,$hostname) = each(%possible_hosts)) {
8605: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
8606: $result{$host} = $hostname;
8607: }
8608: }
8609: } else {
8610: while ( my ($host,$hostname) = each(%possible_hosts)) {
8611: if ($hostdom{$host} eq $domain) {
8612: $result{$host} = $hostname;
8613: }
8614: }
8615: }
8616: return %result;
8617: }
8618:
8619: sub host_domain {
8620: &load_hosts_tab() if (!$loaded);
8621:
8622: my ($lonid) = @_;
8623: return $hostdom{$lonid};
8624: }
8625:
8626: sub all_domains {
8627: &load_hosts_tab() if (!$loaded);
8628:
8629: my %seen;
8630: my @uniq = grep(!$seen{$_}++, values(%hostdom));
8631: return @uniq;
8632: }
8633: }
8634:
8635: {
8636: my %iphost;
8637: my %name_to_ip;
8638: my %lonid_to_ip;
8639:
8640: sub get_hosts_from_ip {
8641: my ($ip) = @_;
8642: my %iphosts = &get_iphost();
8643: if (ref($iphosts{$ip})) {
8644: return @{$iphosts{$ip}};
8645: }
8646: return;
8647: }
8648:
8649: sub reset_hosts_ip_info {
8650: undef(%iphost);
8651: undef(%name_to_ip);
8652: undef(%lonid_to_ip);
8653: }
8654:
8655: sub get_host_ip {
8656: my ($lonid) = @_;
8657: if (exists($lonid_to_ip{$lonid})) {
8658: return $lonid_to_ip{$lonid};
8659: }
8660: my $name=&hostname($lonid);
8661: my $ip = gethostbyname($name);
8662: return if (!$ip || length($ip) ne 4);
8663: $ip=inet_ntoa($ip);
8664: $name_to_ip{$name} = $ip;
8665: $lonid_to_ip{$lonid} = $ip;
8666: return $ip;
8667: }
8668:
8669: sub get_iphost {
8670: my ($ignore_cache) = @_;
8671:
8672: if (!$ignore_cache) {
8673: if (%iphost) {
8674: return %iphost;
8675: }
8676: my ($ip_info,$cached)=
8677: &Apache::lonnet::is_cached_new('iphost','iphost');
8678: if ($cached) {
8679: %iphost = %{$ip_info->[0]};
8680: %name_to_ip = %{$ip_info->[1]};
8681: %lonid_to_ip = %{$ip_info->[2]};
8682: return %iphost;
8683: }
8684: }
8685:
8686: # get yesterday's info for fallback
8687: my %old_name_to_ip;
8688: my ($ip_info,$cached)=
8689: &Apache::lonnet::is_cached_new('iphost','iphost');
8690: if ($cached) {
8691: %old_name_to_ip = %{$ip_info->[1]};
8692: }
8693:
8694: my %name_to_host = &all_names();
8695: foreach my $name (keys(%name_to_host)) {
8696: my $ip;
8697: if (!exists($name_to_ip{$name})) {
8698: $ip = gethostbyname($name);
8699: if (!$ip || length($ip) ne 4) {
8700: if (defined($old_name_to_ip{$name})) {
8701: $ip = $old_name_to_ip{$name};
8702: &logthis("Can't find $name defaulting to old $ip");
8703: } else {
8704: &logthis("Name $name no IP found");
8705: next;
8706: }
8707: } else {
8708: $ip=inet_ntoa($ip);
8709: }
8710: $name_to_ip{$name} = $ip;
8711: } else {
8712: $ip = $name_to_ip{$name};
8713: }
8714: foreach my $id (@{ $name_to_host{$name} }) {
8715: $lonid_to_ip{$id} = $ip;
8716: }
8717: push(@{$iphost{$ip}},@{$name_to_host{$name}});
8718: }
8719: &Apache::lonnet::do_cache_new('iphost','iphost',
8720: [\%iphost,\%name_to_ip,\%lonid_to_ip],
8721: 48*60*60);
8722:
8723: return %iphost;
8724: }
8725: }
8726:
8727: BEGIN {
8728:
8729: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
8730: unless ($readit) {
8731: {
8732: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
8733: %perlvar = (%perlvar,%{$configvars});
8734: }
8735:
8736:
8737: # ------------------------------------------------------ Read spare server file
8738: {
8739: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
8740:
8741: while (my $configline=<$config>) {
8742: chomp($configline);
8743: if ($configline) {
8744: my ($host,$type) = split(':',$configline,2);
8745: if (!defined($type) || $type eq '') { $type = 'default' };
8746: push(@{ $spareid{$type} }, $host);
8747: }
8748: }
8749: close($config);
8750: }
8751: # ------------------------------------------------------------ Read permissions
8752: {
8753: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
8754:
8755: while (my $configline=<$config>) {
8756: chomp($configline);
8757: if ($configline) {
8758: my ($role,$perm)=split(/ /,$configline);
8759: if ($perm ne '') { $pr{$role}=$perm; }
8760: }
8761: }
8762: close($config);
8763: }
8764:
8765: # -------------------------------------------- Read plain texts for permissions
8766: {
8767: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
8768:
8769: while (my $configline=<$config>) {
8770: chomp($configline);
8771: if ($configline) {
8772: my ($short,@plain)=split(/:/,$configline);
8773: %{$prp{$short}} = ();
8774: if (@plain > 0) {
8775: $prp{$short}{'std'} = $plain[0];
8776: for (my $i=1; $i<@plain; $i++) {
8777: $prp{$short}{'alt'.$i} = $plain[$i];
8778: }
8779: }
8780: }
8781: }
8782: close($config);
8783: }
8784:
8785: # ---------------------------------------------------------- Read package table
8786: {
8787: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
8788:
8789: while (my $configline=<$config>) {
8790: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
8791: chomp($configline);
8792: my ($short,$plain)=split(/:/,$configline);
8793: my ($pack,$name)=split(/\&/,$short);
8794: if ($plain ne '') {
8795: $packagetab{$pack.'&'.$name.'&name'}=$name;
8796: $packagetab{$short}=$plain;
8797: }
8798: }
8799: close($config);
8800: }
8801:
8802: # ------------- set up temporary directory
8803: {
8804: $tmpdir = $perlvar{'lonDaemons'}.'/tmp/';
8805:
8806: }
8807:
8808: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
8809: 'compress_threshold'=> 20_000,
8810: });
8811:
8812: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
8813: $dumpcount=0;
8814: $locknum=0;
8815:
8816: &logtouch();
8817: &logthis('<font color="yellow">INFO: Read configuration</font>');
8818: $readit=1;
8819: {
8820: use integer;
8821: my $test=(2**32)+1;
8822: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
8823: &logthis(" Detected 64bit platform ($_64bit)");
8824: }
8825: }
8826: }
8827:
8828: 1;
8829: __END__
8830:
8831: =pod
8832:
8833: =head1 NAME
8834:
8835: Apache::lonnet - Subroutines to ask questions about things in the network.
8836:
8837: =head1 SYNOPSIS
8838:
8839: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
8840:
8841: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
8842:
8843: Common parameters:
8844:
8845: =over 4
8846:
8847: =item *
8848:
8849: $uname : an internal username (if $cname expecting a course Id specifically)
8850:
8851: =item *
8852:
8853: $udom : a domain (if $cdom expecting a course's domain specifically)
8854:
8855: =item *
8856:
8857: $symb : a resource instance identifier
8858:
8859: =item *
8860:
8861: $namespace : the name of a .db file that contains the data needed or
8862: being set.
8863:
8864: =back
8865:
8866: =head1 OVERVIEW
8867:
8868: lonnet provides subroutines which interact with the
8869: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
8870: about classes, users, and resources.
8871:
8872: For many of these objects you can also use this to store data about
8873: them or modify them in various ways.
8874:
8875: =head2 Symbs
8876:
8877: To identify a specific instance of a resource, LON-CAPA uses symbols
8878: or "symbs"X<symb>. These identifiers are built from the URL of the
8879: map, the resource number of the resource in the map, and the URL of
8880: the resource itself. The latter is somewhat redundant, but might help
8881: if maps change.
8882:
8883: An example is
8884:
8885: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
8886:
8887: The respective map entry is
8888:
8889: <resource id="19" src="/res/msu/korte/tests/part12.problem"
8890: title="Problem 2">
8891: </resource>
8892:
8893: Symbs are used by the random number generator, as well as to store and
8894: restore data specific to a certain instance of for example a problem.
8895:
8896: =head2 Storing And Retrieving Data
8897:
8898: X<store()>X<cstore()>X<restore()>Three of the most important functions
8899: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
8900: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
8901: is is the non-critical message twin of cstore. These functions are for
8902: handlers to store a perl hash to a user's permanent data space in an
8903: easy manner, and to retrieve it again on another call. It is expected
8904: that a handler would use this once at the beginning to retrieve data,
8905: and then again once at the end to send only the new data back.
8906:
8907: The data is stored in the user's data directory on the user's
8908: homeserver under the ID of the course.
8909:
8910: The hash that is returned by restore will have all of the previous
8911: value for all of the elements of the hash.
8912:
8913: Example:
8914:
8915: #creating a hash
8916: my %hash;
8917: $hash{'foo'}='bar';
8918:
8919: #storing it
8920: &Apache::lonnet::cstore(\%hash);
8921:
8922: #changing a value
8923: $hash{'foo'}='notbar';
8924:
8925: #adding a new value
8926: $hash{'bar'}='foo';
8927: &Apache::lonnet::cstore(\%hash);
8928:
8929: #retrieving the hash
8930: my %history=&Apache::lonnet::restore();
8931:
8932: #print the hash
8933: foreach my $key (sort(keys(%history))) {
8934: print("\%history{$key} = $history{$key}");
8935: }
8936:
8937: Will print out:
8938:
8939: %history{1:foo} = bar
8940: %history{1:keys} = foo:timestamp
8941: %history{1:timestamp} = 990455579
8942: %history{2:bar} = foo
8943: %history{2:foo} = notbar
8944: %history{2:keys} = foo:bar:timestamp
8945: %history{2:timestamp} = 990455580
8946: %history{bar} = foo
8947: %history{foo} = notbar
8948: %history{timestamp} = 990455580
8949: %history{version} = 2
8950:
8951: Note that the special hash entries C<keys>, C<version> and
8952: C<timestamp> were added to the hash. C<version> will be equal to the
8953: total number of versions of the data that have been stored. The
8954: C<timestamp> attribute will be the UNIX time the hash was
8955: stored. C<keys> is available in every historical section to list which
8956: keys were added or changed at a specific historical revision of a
8957: hash.
8958:
8959: B<Warning>: do not store the hash that restore returns directly. This
8960: will cause a mess since it will restore the historical keys as if the
8961: were new keys. I.E. 1:foo will become 1:1:foo etc.
8962:
8963: Calling convention:
8964:
8965: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
8966: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
8967:
8968: For more detailed information, see lonnet specific documentation.
8969:
8970: =head1 RETURN MESSAGES
8971:
8972: =over 4
8973:
8974: =item * B<con_lost>: unable to contact remote host
8975:
8976: =item * B<con_delayed>: unable to contact remote host, message will be delivered
8977: when the connection is brought back up
8978:
8979: =item * B<con_failed>: unable to contact remote host and unable to save message
8980: for later delivery
8981:
8982: =item * B<error:>: an error a occured, a description of the error follows the :
8983:
8984: =item * B<no_such_host>: unable to fund a host associated with the user/domain
8985: that was requested
8986:
8987: =back
8988:
8989: =head1 PUBLIC SUBROUTINES
8990:
8991: =head2 Session Environment Functions
8992:
8993: =over 4
8994:
8995: =item *
8996: X<appenv()>
8997: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
8998: the user envirnoment file, and will be restored for each access this
8999: user makes during this session, also modifies the %env for the current
9000: process. Optional rolesarrayref - if defined contains a reference to an array
9001: of roles which are exempt from the restriction on modifying user.role entries
9002: in the user's environment.db and in %env.
9003:
9004: =item *
9005: X<delenv()>
9006: B<delenv($regexp)>: removes all items from the session
9007: environment file that matches the regular expression in $regexp. The
9008: values are also delted from the current processes %env.
9009:
9010: =item * get_env_multiple($name)
9011:
9012: gets $name from the %env hash, it seemlessly handles the cases where multiple
9013: values may be defined and end up as an array ref.
9014:
9015: returns an array of values
9016:
9017: =back
9018:
9019: =head2 User Information
9020:
9021: =over 4
9022:
9023: =item *
9024: X<queryauthenticate()>
9025: B<queryauthenticate($uname,$udom)>: try to determine user's current
9026: authentication scheme
9027:
9028: =item *
9029: X<authenticate()>
9030: B<authenticate($uname,$upass,$udom)>: try to
9031: authenticate user from domain's lib servers (first use the current
9032: one). C<$upass> should be the users password.
9033:
9034: =item *
9035: X<homeserver()>
9036: B<homeserver($uname,$udom)>: find the server which has
9037: the user's directory and files (there must be only one), this caches
9038: the answer, and also caches if there is a borken connection.
9039:
9040: =item *
9041: X<idget()>
9042: B<idget($udom,@ids)>: find the usernames behind a list of IDs
9043: (IDs are a unique resource in a domain, there must be only 1 ID per
9044: username, and only 1 username per ID in a specific domain) (returns
9045: hash: id=>name,id=>name)
9046:
9047: =item *
9048: X<idrget()>
9049: B<idrget($udom,@unames)>: find the IDs behind a list of
9050: usernames (returns hash: name=>id,name=>id)
9051:
9052: =item *
9053: X<idput()>
9054: B<idput($udom,%ids)>: store away a list of names and associated IDs
9055:
9056: =item *
9057: X<rolesinit()>
9058: B<rolesinit($udom,$username,$authhost)>: get user privileges
9059:
9060: =item *
9061: X<getsection()>
9062: B<getsection($udom,$uname,$cname)>: finds the section of student in the
9063: course $cname, return section name/number or '' for "not in course"
9064: and '-1' for "no section"
9065:
9066: =item *
9067: X<userenvironment()>
9068: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
9069: passed in @what from the requested user's environment, returns a hash
9070:
9071: =item *
9072: X<userlog_query()>
9073: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
9074: activity.log file. %filters defines filters applied when parsing the
9075: log file. These can be start or end timestamps, or the type of action
9076: - log to look for Login or Logout events, check for Checkin or
9077: Checkout, role for role selection. The response is in the form
9078: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
9079: escaped strings of the action recorded in the activity.log file.
9080:
9081: =back
9082:
9083: =head2 User Roles
9084:
9085: =over 4
9086:
9087: =item *
9088:
9089: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
9090: F: full access
9091: U,I,K: authentication modes (cxx only)
9092: '': forbidden
9093: 1: user needs to choose course
9094: 2: browse allowed
9095: A: passphrase authentication needed
9096:
9097: =item *
9098:
9099: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
9100: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
9101: and course level
9102:
9103: =item *
9104:
9105: plaintext($short) : return value in %prp hash (rolesplain.tab); plain text
9106: explanation of a user role term
9107:
9108: =item *
9109:
9110: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
9111: All arguments are optional. Returns a hash of a roles, either for
9112: co-author/assistant author roles for a user's Construction Space
9113: (default), or if $context is 'userroles', roles for the user himself,
9114: In the hash, keys are set to colon-separated $uname,$udom,$role, and
9115: (optionally) if $withsec is true, a fourth colon-separated item - $section.
9116: For each key, value is set to colon-separated start and end times for
9117: the role. If no username and domain are specified, will default to
9118: current user/domain. Types, roles, and roledoms are references to arrays
9119: of role statuses (active, future or previous), roles
9120: (e.g., cc,in, st etc.) and domains of the roles which can be used
9121: to restrict the list of roles reported. If no array ref is
9122: provided for types, will default to return only active roles.
9123:
9124: =back
9125:
9126: =head2 User Modification
9127:
9128: =over 4
9129:
9130: =item *
9131:
9132: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
9133: user for the level given by URL. Optional start and end dates (leave empty
9134: string or zero for "no date")
9135:
9136: =item *
9137:
9138: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
9139: change a users, password, possible return values are: ok,
9140: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
9141: refused
9142:
9143: =item *
9144:
9145: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
9146:
9147: =item *
9148:
9149: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene) :
9150: modify user
9151:
9152: =item *
9153:
9154: modifystudent
9155:
9156: modify a student's enrollment and identification information.
9157: The course id is resolved based on the current users environment.
9158: This means the envoking user must be a course coordinator or otherwise
9159: associated with a course.
9160:
9161: This call is essentially a wrapper for lonnet::modifyuser and
9162: lonnet::modify_student_enrollment
9163:
9164: Inputs:
9165:
9166: =over 4
9167:
9168: =item B<$udom> Student's loncapa domain
9169:
9170: =item B<$uname> Student's loncapa login name
9171:
9172: =item B<$uid> Student's id/student number
9173:
9174: =item B<$umode> Student's authentication mode
9175:
9176: =item B<$upass> Student's password
9177:
9178: =item B<$first> Student's first name
9179:
9180: =item B<$middle> Student's middle name
9181:
9182: =item B<$last> Student's last name
9183:
9184: =item B<$gene> Student's generation
9185:
9186: =item B<$usec> Student's section in course
9187:
9188: =item B<$end> Unix time of the roles expiration
9189:
9190: =item B<$start> Unix time of the roles start date
9191:
9192: =item B<$forceid> If defined, allow $uid to be changed
9193:
9194: =item B<$desiredhome> server to use as home server for student
9195:
9196: =item B<$email> Student's permanent e-mail address
9197:
9198: =item B<$type> Type of enrollment (auto or manual)
9199:
9200: =item B<$locktype>
9201:
9202: =item B<$cid>
9203:
9204: =item B<$selfenroll>
9205:
9206: =item B<$context>
9207:
9208: =back
9209:
9210: =item *
9211:
9212: modify_student_enrollment
9213:
9214: Change a students enrollment status in a class. The environment variable
9215: 'role.request.course' must be defined for this function to proceed.
9216:
9217: Inputs:
9218:
9219: =over 4
9220:
9221: =item $udom, students domain
9222:
9223: =item $uname, students name
9224:
9225: =item $uid, students user id
9226:
9227: =item $first, students first name
9228:
9229: =item $middle
9230:
9231: =item $last
9232:
9233: =item $gene
9234:
9235: =item $usec
9236:
9237: =item $end
9238:
9239: =item $start
9240:
9241: =item $type
9242:
9243: =item $locktype
9244:
9245: =item $cid
9246:
9247: =item $selfenroll
9248:
9249: =item $context
9250:
9251: =back
9252:
9253:
9254: =item *
9255:
9256: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
9257: custom role; give a custom role to a user for the level given by URL. Specify
9258: name and domain of role author, and role name
9259:
9260: =item *
9261:
9262: revokerole($udom,$uname,$url,$role) : revoke a role for url
9263:
9264: =item *
9265:
9266: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
9267:
9268: =back
9269:
9270: =head2 Course Infomation
9271:
9272: =over 4
9273:
9274: =item *
9275:
9276: coursedescription($courseid) : returns a hash of information about the
9277: specified course id, including all environment settings for the
9278: course, the description of the course will be in the hash under the
9279: key 'description'
9280:
9281: =item *
9282:
9283: resdata($name,$domain,$type,@which) : request for current parameter
9284: setting for a specific $type, where $type is either 'course' or 'user',
9285: @what should be a list of parameters to ask about. This routine caches
9286: answers for 5 minutes.
9287:
9288: =item *
9289:
9290: get_courseresdata($courseid, $domain) : dump the entire course resource
9291: data base, returning a hash that is keyed by the resource name and has
9292: values that are the resource value. I believe that the timestamps and
9293: versions are also returned.
9294:
9295:
9296: =back
9297:
9298: =head2 Course Modification
9299:
9300: =over 4
9301:
9302: =item *
9303:
9304: writecoursepref($courseid,%prefs) : write preferences (environment
9305: database) for a course
9306:
9307: =item *
9308:
9309: createcourse($udom,$description,$url) : make/modify course
9310:
9311: =back
9312:
9313: =head2 Resource Subroutines
9314:
9315: =over 4
9316:
9317: =item *
9318:
9319: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
9320:
9321: =item *
9322:
9323: repcopy($filename) : subscribes to the requested file, and attempts to
9324: replicate from the owning library server, Might return
9325: 'unavailable', 'not_found', 'forbidden', 'ok', or
9326: 'bad_request', also attempts to grab the metadata for the
9327: resource. Expects the local filesystem pathname
9328: (/home/httpd/html/res/....)
9329:
9330: =back
9331:
9332: =head2 Resource Information
9333:
9334: =over 4
9335:
9336: =item *
9337:
9338: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
9339: a vairety of different possible values, $varname should be a request
9340: string, and the other parameters can be used to specify who and what
9341: one is asking about.
9342:
9343: Possible values for $varname are environment.lastname (or other item
9344: from the envirnment hash), user.name (or someother aspect about the
9345: user), resource.0.maxtries (or some other part and parameter of a
9346: resource)
9347:
9348: =item *
9349:
9350: directcondval($number) : get current value of a condition; reads from a state
9351: string
9352:
9353: =item *
9354:
9355: condval($condidx) : value of condition index based on state
9356:
9357: =item *
9358:
9359: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
9360: resource's metadata, $what should be either a specific key, or either
9361: 'keys' (to get a list of possible keys) or 'packages' to get a list of
9362: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
9363:
9364: this function automatically caches all requests
9365:
9366: =item *
9367:
9368: metadata_query($query,$custom,$customshow) : make a metadata query against the
9369: network of library servers; returns file handle of where SQL and regex results
9370: will be stored for query
9371:
9372: =item *
9373:
9374: symbread($filename) : return symbolic list entry (filename argument optional);
9375: returns the data handle
9376:
9377: =item *
9378:
9379: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
9380: a possible symb for the URL in $thisfn, and if is an encryypted
9381: resource that the user accessed using /enc/ returns a 1 on success, 0
9382: on failure, user must be in a course, as it assumes the existance of
9383: the course initial hash, and uses $env('request.course.id'}
9384:
9385:
9386: =item *
9387:
9388: symbclean($symb) : removes versions numbers from a symb, returns the
9389: cleaned symb
9390:
9391: =item *
9392:
9393: is_on_map($uri) : checks if the $uri is somewhere on the current
9394: course map, user must be in a course for it to work.
9395:
9396: =item *
9397:
9398: numval($salt) : return random seed value (addend for rndseed)
9399:
9400: =item *
9401:
9402: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
9403: a random seed, all arguments are optional, if they aren't sent it uses the
9404: environment to derive them. Note: if symb isn't sent and it can't get one
9405: from &symbread it will use the current time as its return value
9406:
9407: =item *
9408:
9409: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
9410: unfakeable, receipt
9411:
9412: =item *
9413:
9414: receipt() : API to ireceipt working off of env values; given out to users
9415:
9416: =item *
9417:
9418: countacc($url) : count the number of accesses to a given URL
9419:
9420: =item *
9421:
9422: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
9423:
9424: =item *
9425:
9426: checkin($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 $tcrsid)
9427:
9428: =item *
9429:
9430: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
9431:
9432: =item *
9433:
9434: devalidate($symb) : devalidate temporary spreadsheet calculations,
9435: forcing spreadsheet to reevaluate the resource scores next time.
9436:
9437: =back
9438:
9439: =head2 Storing/Retreiving Data
9440:
9441: =over 4
9442:
9443: =item *
9444:
9445: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
9446: for this url; hashref needs to be given and should be a \%hashname; the
9447: remaining args aren't required and if they aren't passed or are '' they will
9448: be derived from the env
9449:
9450: =item *
9451:
9452: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
9453: uses critical subroutine
9454:
9455: =item *
9456:
9457: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
9458: all args are optional
9459:
9460: =item *
9461:
9462: dumpstore($namespace,$udom,$uname,$regexp,$range) :
9463: dumps the complete (or key matching regexp) namespace into a hash
9464: ($udom, $uname, $regexp, $range are optional) for a namespace that is
9465: normally &store()ed into
9466:
9467: $range should be either an integer '100' (give me the first 100
9468: matching records)
9469: or be two integers sperated by a - with no spaces
9470: '30-50' (give me the 30th through the 50th matching
9471: records)
9472:
9473:
9474: =item *
9475:
9476: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
9477: replaces a &store() version of data with a replacement set of data
9478: for a particular resource in a namespace passed in the $storehash hash
9479: reference
9480:
9481: =item *
9482:
9483: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
9484: works very similar to store/cstore, but all data is stored in a
9485: temporary location and can be reset using tmpreset, $storehash should
9486: be a hash reference, returns nothing on success
9487:
9488: =item *
9489:
9490: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
9491: similar to restore, but all data is stored in a temporary location and
9492: can be reset using tmpreset. Returns a hash of values on success,
9493: error string otherwise.
9494:
9495: =item *
9496:
9497: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
9498: deltes all keys for $symb form the temporary storage hash.
9499:
9500: =item *
9501:
9502: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
9503: reference filled in from namesp ($udom and $uname are optional)
9504:
9505: =item *
9506:
9507: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
9508: namesp ($udom and $uname are optional)
9509:
9510: =item *
9511:
9512: dump($namespace,$udom,$uname,$regexp,$range) :
9513: dumps the complete (or key matching regexp) namespace into a hash
9514: ($udom, $uname, $regexp, $range are optional)
9515:
9516: $range should be either an integer '100' (give me the first 100
9517: matching records)
9518: or be two integers sperated by a - with no spaces
9519: '30-50' (give me the 30th through the 50th matching
9520: records)
9521: =item *
9522:
9523: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
9524: $store can be a scalar, an array reference, or if the amount to be
9525: incremented is > 1, a hash reference.
9526:
9527: ($udom and $uname are optional)
9528:
9529: =item *
9530:
9531: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
9532: ($udom and $uname are optional)
9533:
9534: =item *
9535:
9536: cput($namespace,$storehash,$udom,$uname) : critical put
9537: ($udom and $uname are optional)
9538:
9539: =item *
9540:
9541: newput($namespace,$storehash,$udom,$uname) :
9542:
9543: Attempts to store the items in the $storehash, but only if they don't
9544: currently exist, if this succeeds you can be certain that you have
9545: successfully created a new key value pair in the $namespace db.
9546:
9547:
9548: Args:
9549: $namespace: name of database to store values to
9550: $storehash: hashref to store to the db
9551: $udom: (optional) domain of user containing the db
9552: $uname: (optional) name of user caontaining the db
9553:
9554: Returns:
9555: 'ok' -> succeeded in storing all keys of $storehash
9556: 'key_exists: <key>' -> failed to anything out of $storehash, as at
9557: least <key> already existed in the db (other
9558: requested keys may also already exist)
9559: 'error: <msg>' -> unable to tie the DB or other erorr occured
9560: 'con_lost' -> unable to contact request server
9561: 'refused' -> action was not allowed by remote machine
9562:
9563:
9564: =item *
9565:
9566: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
9567: reference filled in from namesp (encrypts the return communication)
9568: ($udom and $uname are optional)
9569:
9570: =item *
9571:
9572: log($udom,$name,$home,$message) : write to permanent log for user; use
9573: critical subroutine
9574:
9575: =item *
9576:
9577: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
9578: array reference filled in from namespace found in domain level on either
9579: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
9580:
9581: =item *
9582:
9583: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
9584: domain level either on specified domain server ($uhome) or primary domain
9585: server ($udom and $uhome are optional)
9586:
9587: =item *
9588:
9589: get_domain_defaults($target_domain) : returns hash with defaults for
9590: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
9591: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
9592: or localauth), initial password or a kerberos realm, language (e.g., en-us).
9593: Values are retrieved from cache (if current), or from domain's configuration.db
9594: (if available), or lastly from values in lonTabs/dns_domain,tab,
9595: or lonTabs/domain.tab.
9596:
9597: %domdefaults = &get_auth_defaults($target_domain);
9598:
9599: =back
9600:
9601: =head2 Network Status Functions
9602:
9603: =over 4
9604:
9605: =item *
9606:
9607: dirlist($uri) : return directory list based on URI
9608:
9609: =item *
9610:
9611: spareserver() : find server with least workload from spare.tab
9612:
9613: =back
9614:
9615: =head2 Apache Request
9616:
9617: =over 4
9618:
9619: =item *
9620:
9621: ssi($url,%hash) : server side include, does a complete request cycle on url to
9622: localhost, posts hash
9623:
9624: =back
9625:
9626: =head2 Data to String to Data
9627:
9628: =over 4
9629:
9630: =item *
9631:
9632: hash2str(%hash) : convert a hash into a string complete with escaping and '='
9633: and '&' separators, supports elements that are arrayrefs and hashrefs
9634:
9635: =item *
9636:
9637: hashref2str($hashref) : convert a hashref into a string complete with
9638: escaping and '=' and '&' separators, supports elements that are
9639: arrayrefs and hashrefs
9640:
9641: =item *
9642:
9643: arrayref2str($arrayref) : convert an arrayref into a string complete
9644: with escaping and '&' separators, supports elements that are arrayrefs
9645: and hashrefs
9646:
9647: =item *
9648:
9649: str2hash($string) : convert string to hash using unescaping and
9650: splitting on '=' and '&', supports elements that are arrayrefs and
9651: hashrefs
9652:
9653: =item *
9654:
9655: str2array($string) : convert string to hash using unescaping and
9656: splitting on '&', supports elements that are arrayrefs and hashrefs
9657:
9658: =back
9659:
9660: =head2 Logging Routines
9661:
9662: =over 4
9663:
9664: These routines allow one to make log messages in the lonnet.log and
9665: lonnet.perm logfiles.
9666:
9667: =item *
9668:
9669: logtouch() : make sure the logfile, lonnet.log, exists
9670:
9671: =item *
9672:
9673: logthis() : append message to the normal lonnet.log file, it gets
9674: preiodically rolled over and deleted.
9675:
9676: =item *
9677:
9678: logperm() : append a permanent message to lonnet.perm.log, this log
9679: file never gets deleted by any automated portion of the system, only
9680: messages of critical importance should go in here.
9681:
9682: =back
9683:
9684: =head2 General File Helper Routines
9685:
9686: =over 4
9687:
9688: =item *
9689:
9690: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
9691: (a) files in /uploaded
9692: (i) If a local copy of the file exists -
9693: compares modification date of local copy with last-modified date for
9694: definitive version stored on home server for course. If local copy is
9695: stale, requests a new version from the home server and stores it.
9696: If the original has been removed from the home server, then local copy
9697: is unlinked.
9698: (ii) If local copy does not exist -
9699: requests the file from the home server and stores it.
9700:
9701: If $caller is 'uploadrep':
9702: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
9703: for request for files originally uploaded via DOCS.
9704: - returns 'ok' if fresh local copy now available, -1 otherwise.
9705:
9706: Otherwise:
9707: This indicates a call from the content generation phase of the request.
9708: - returns the entire contents of the file or -1.
9709:
9710: (b) files in /res
9711: - returns the entire contents of a file or -1;
9712: it properly subscribes to and replicates the file if neccessary.
9713:
9714:
9715: =item *
9716:
9717: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
9718: reference
9719:
9720: returns either a stat() list of data about the file or an empty list
9721: if the file doesn't exist or couldn't find out about it (connection
9722: problems or user unknown)
9723:
9724: =item *
9725:
9726: filelocation($dir,$file) : returns file system location of a file
9727: based on URI; meant to be "fairly clean" absolute reference, $dir is a
9728: directory that relative $file lookups are to looked in ($dir of /a/dir
9729: and a file of ../bob will become /a/bob)
9730:
9731: =item *
9732:
9733: hreflocation($dir,$file) : returns file system location or a URL; same as
9734: filelocation except for hrefs
9735:
9736: =item *
9737:
9738: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
9739:
9740: =back
9741:
9742: =head2 Usererfile file routines (/uploaded*)
9743:
9744: =over 4
9745:
9746: =item *
9747:
9748: userfileupload(): main rotine for putting a file in a user or course's
9749: filespace, arguments are,
9750:
9751: formname - required - this is the name of the element in $env where the
9752: filename, and the contents of the file to create/modifed exist
9753: the filename is in $env{'form.'.$formname.'.filename'} and the
9754: contents of the file is located in $env{'form.'.$formname}
9755: coursedoc - if true, store the file in the course of the active role
9756: of the current user
9757: subdir - required - subdirectory to put the file in under ../userfiles/
9758: if undefined, it will be placed in "unknown"
9759:
9760: (This routine calls clean_filename() to remove any dangerous
9761: characters from the filename, and then calls finuserfileupload() to
9762: complete the transaction)
9763:
9764: returns either the url of the uploaded file (/uploaded/....) if successful
9765: and /adm/notfound.html if unsuccessful
9766:
9767: =item *
9768:
9769: clean_filename(): routine for cleaing a filename up for storage in
9770: userfile space, argument is:
9771:
9772: filename - proposed filename
9773:
9774: returns: the new clean filename
9775:
9776: =item *
9777:
9778: finishuserfileupload(): routine that creaes and sends the file to
9779: userspace, probably shouldn't be called directly
9780:
9781: docuname: username or courseid of destination for the file
9782: docudom: domain of user/course of destination for the file
9783: formname: same as for userfileupload()
9784: fname: filename (inculding subdirectories) for the file
9785:
9786: returns either the url of the uploaded file (/uploaded/....) if successful
9787: and /adm/notfound.html if unsuccessful
9788:
9789: =item *
9790:
9791: renameuserfile(): renames an existing userfile to a new name
9792:
9793: Args:
9794: docuname: username or courseid of destination for the file
9795: docudom: domain of user/course of destination for the file
9796: old: current file name (including any subdirs under userfiles)
9797: new: desired file name (including any subdirs under userfiles)
9798:
9799: =item *
9800:
9801: mkdiruserfile(): creates a directory is a userfiles dir
9802:
9803: Args:
9804: docuname: username or courseid of destination for the file
9805: docudom: domain of user/course of destination for the file
9806: dir: dir to create (including any subdirs under userfiles)
9807:
9808: =item *
9809:
9810: removeuserfile(): removes a file that exists in userfiles
9811:
9812: Args:
9813: docuname: username or courseid of destination for the file
9814: docudom: domain of user/course of destination for the file
9815: fname: filname to delete (including any subdirs under userfiles)
9816:
9817: =item *
9818:
9819: removeuploadedurl(): convience function for removeuserfile()
9820:
9821: Args:
9822: url: a full /uploaded/... url to delete
9823:
9824: =item *
9825:
9826: get_portfile_permissions():
9827: Args:
9828: domain: domain of user or course contain the portfolio files
9829: user: name of user or num of course contain the portfolio files
9830: Returns:
9831: hashref of a dump of the proper file_permissions.db
9832:
9833:
9834: =item *
9835:
9836: get_access_controls():
9837:
9838: Args:
9839: current_permissions: the hash ref returned from get_portfile_permissions()
9840: group: (optional) the group you want the files associated with
9841: file: (optional) the file you want access info on
9842:
9843: Returns:
9844: a hash (keys are file names) of hashes containing
9845: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
9846: values are XML containing access control settings (see below)
9847:
9848: Internal notes:
9849:
9850: access controls are stored in file_permissions.db as key=value pairs.
9851: key -> path to file/file_name\0uniqueID:scope_end_start
9852: where scope -> public,guest,course,group,domains or users.
9853: end -> UNIX time for end of access (0 -> no end date)
9854: start -> UNIX time for start of access
9855:
9856: value -> XML description of access control
9857: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
9858: <start></start>
9859: <end></end>
9860:
9861: <password></password> for scope type = guest
9862:
9863: <domain></domain> for scope type = course or group
9864: <number></number>
9865: <roles id="">
9866: <role></role>
9867: <access></access>
9868: <section></section>
9869: <group></group>
9870: </roles>
9871:
9872: <dom></dom> for scope type = domains
9873:
9874: <users> for scope type = users
9875: <user>
9876: <uname></uname>
9877: <udom></udom>
9878: </user>
9879: </users>
9880: </scope>
9881:
9882: Access data is also aggregated for each file in an additional key=value pair:
9883: key -> path to file/file_name\0accesscontrol
9884: value -> reference to hash
9885: hash contains key = value pairs
9886: where key = uniqueID:scope_end_start
9887: value = UNIX time record was last updated
9888:
9889: Used to improve speed of look-ups of access controls for each file.
9890:
9891: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
9892:
9893: modify_access_controls():
9894:
9895: Modifies access controls for a portfolio file
9896: Args
9897: 1. file name
9898: 2. reference to hash of required changes,
9899: 3. domain
9900: 4. username
9901: where domain,username are the domain of the portfolio owner
9902: (either a user or a course)
9903:
9904: Returns:
9905: 1. result of additions or updates ('ok' or 'error', with error message).
9906: 2. result of deletions ('ok' or 'error', with error message).
9907: 3. reference to hash of any new or updated access controls.
9908: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
9909: key = integer (inbound ID)
9910: value = uniqueID
9911:
9912: =back
9913:
9914: =head2 HTTP Helper Routines
9915:
9916: =over 4
9917:
9918: =item *
9919:
9920: escape() : unpack non-word characters into CGI-compatible hex codes
9921:
9922: =item *
9923:
9924: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
9925:
9926: =back
9927:
9928: =head1 PRIVATE SUBROUTINES
9929:
9930: =head2 Underlying communication routines (Shouldn't call)
9931:
9932: =over 4
9933:
9934: =item *
9935:
9936: subreply() : tries to pass a message to lonc, returns con_lost if incapable
9937:
9938: =item *
9939:
9940: reply() : uses subreply to send a message to remote machine, logs all failures
9941:
9942: =item *
9943:
9944: critical() : passes a critical message to another server; if cannot
9945: get through then place message in connection buffer directory and
9946: returns con_delayed, if incapable of saving message, returns
9947: con_failed
9948:
9949: =item *
9950:
9951: reconlonc() : tries to reconnect lonc client processes.
9952:
9953: =back
9954:
9955: =head2 Resource Access Logging
9956:
9957: =over 4
9958:
9959: =item *
9960:
9961: flushcourselogs() : flush (save) buffer logs and access logs
9962:
9963: =item *
9964:
9965: courselog($what) : save message for course in hash
9966:
9967: =item *
9968:
9969: courseacclog($what) : save message for course using &courselog(). Perform
9970: special processing for specific resource types (problems, exams, quizzes, etc).
9971:
9972: =item *
9973:
9974: goodbye() : flush course logs and log shutting down; it is called in srm.conf
9975: as a PerlChildExitHandler
9976:
9977: =back
9978:
9979: =head2 Other
9980:
9981: =over 4
9982:
9983: =item *
9984:
9985: symblist($mapname,%newhash) : update symbolic storage links
9986:
9987: =back
9988:
9989: =cut
9990:
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