1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.881 2007/05/26 00:38:19 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: package Apache::lonnet;
31:
32: use strict;
33: use LWP::UserAgent();
34: use HTTP::Date;
35: # use Date::Parse;
36: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
37: $_64bit %env);
38:
39: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
40: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
41: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
42: %courseownerbuf, %coursetypebuf);
43:
44: use IO::Socket;
45: use GDBM_File;
46: use HTML::LCParser;
47: use Fcntl qw(:flock);
48: use Storable qw(thaw nfreeze);
49: use Time::HiRes qw( gettimeofday tv_interval );
50: use Cache::Memcached;
51: use Digest::MD5;
52: use Math::Random;
53: use LONCAPA qw(:DEFAULT :match);
54: use LONCAPA::Configuration;
55:
56: my $readit;
57: my $max_connection_retries = 10; # Or some such value.
58:
59: require Exporter;
60:
61: our @ISA = qw (Exporter);
62: our @EXPORT = qw(%env);
63:
64: =pod
65:
66: =head1 Package Variables
67:
68: These are largely undocumented, so if you decipher one please note it here.
69:
70: =over 4
71:
72: =item $processmarker
73:
74: Contains the time this process was started and this servers host id.
75:
76: =item $dumpcount
77:
78: Counts the number of times a message log flush has been attempted (regardless
79: of success) by this process. Used as part of the filename when messages are
80: delayed.
81:
82: =back
83:
84: =cut
85:
86:
87: # --------------------------------------------------------------------- Logging
88: {
89: my $logid;
90: sub instructor_log {
91: my ($hash_name,$storehash,$delflag,$uname,$udom)=@_;
92: $logid++;
93: my $id=time().'00000'.$$.'00000'.$logid;
94: return &Apache::lonnet::put('nohist_'.$hash_name,
95: { $id => {
96: 'exe_uname' => $env{'user.name'},
97: 'exe_udom' => $env{'user.domain'},
98: 'exe_time' => time(),
99: 'exe_ip' => $ENV{'REMOTE_ADDR'},
100: 'delflag' => $delflag,
101: 'logentry' => $storehash,
102: 'uname' => $uname,
103: 'udom' => $udom,
104: }
105: },
106: $env{'course.'.$env{'request.course.id'}.'.domain'},
107: $env{'course.'.$env{'request.course.id'}.'.num'}
108: );
109: }
110: }
111:
112: sub logtouch {
113: my $execdir=$perlvar{'lonDaemons'};
114: unless (-e "$execdir/logs/lonnet.log") {
115: open(my $fh,">>$execdir/logs/lonnet.log");
116: close $fh;
117: }
118: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
119: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
120: }
121:
122: sub logthis {
123: my $message=shift;
124: my $execdir=$perlvar{'lonDaemons'};
125: my $now=time;
126: my $local=localtime($now);
127: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
128: print $fh "$local ($$): $message\n";
129: close($fh);
130: }
131: return 1;
132: }
133:
134: sub logperm {
135: my $message=shift;
136: my $execdir=$perlvar{'lonDaemons'};
137: my $now=time;
138: my $local=localtime($now);
139: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
140: print $fh "$now:$message:$local\n";
141: close($fh);
142: }
143: return 1;
144: }
145:
146: sub create_connection {
147: my ($hostname,$lonid) = @_;
148: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
149: Type => SOCK_STREAM,
150: Timeout => 10);
151: return 0 if (!$client);
152: print $client (join(':',$hostname,$lonid,&machine_ids($lonid))."\n");
153: my $result = <$client>;
154: chomp($result);
155: return 1 if ($result eq 'done');
156: return 0;
157: }
158:
159:
160: # -------------------------------------------------- Non-critical communication
161: sub subreply {
162: my ($cmd,$server)=@_;
163: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
164: #
165: # With loncnew process trimming, there's a timing hole between lonc server
166: # process exit and the master server picking up the listen on the AF_UNIX
167: # socket. In that time interval, a lock file will exist:
168:
169: my $lockfile=$peerfile.".lock";
170: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
171: sleep(1);
172: }
173: # At this point, either a loncnew parent is listening or an old lonc
174: # or loncnew child is listening so we can connect or everything's dead.
175: #
176: # We'll give the connection a few tries before abandoning it. If
177: # connection is not possible, we'll con_lost back to the client.
178: #
179: my $client;
180: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
181: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
182: Type => SOCK_STREAM,
183: Timeout => 10);
184: if ($client) {
185: last; # Connected!
186: } else {
187: &create_connection(&hostname($server),$server);
188: }
189: sleep(1); # Try again later if failed connection.
190: }
191: my $answer;
192: if ($client) {
193: print $client "sethost:$server:$cmd\n";
194: $answer=<$client>;
195: if (!$answer) { $answer="con_lost"; }
196: chomp($answer);
197: } else {
198: $answer = 'con_lost'; # Failed connection.
199: }
200: return $answer;
201: }
202:
203: sub reply {
204: my ($cmd,$server)=@_;
205: unless (defined(&hostname($server))) { return 'no_such_host'; }
206: my $answer=subreply($cmd,$server);
207: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
208: &logthis("<font color=\"blue\">WARNING:".
209: " $cmd to $server returned $answer</font>");
210: }
211: return $answer;
212: }
213:
214: # ----------------------------------------------------------- Send USR1 to lonc
215:
216: sub reconlonc {
217: &logthis("Trying to reconnect lonc");
218: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
219: if (open(my $fh,"<$loncfile")) {
220: my $loncpid=<$fh>;
221: chomp($loncpid);
222: if (kill 0 => $loncpid) {
223: &logthis("lonc at pid $loncpid responding, sending USR1");
224: kill USR1 => $loncpid;
225: sleep 1;
226: } else {
227: &logthis(
228: "<font color=\"blue\">WARNING:".
229: " lonc at pid $loncpid not responding, giving up</font>");
230: }
231: } else {
232: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
233: }
234: }
235:
236: # ------------------------------------------------------ Critical communication
237:
238: sub critical {
239: my ($cmd,$server)=@_;
240: unless (&hostname($server)) {
241: &logthis("<font color=\"blue\">WARNING:".
242: " Critical message to unknown server ($server)</font>");
243: return 'no_such_host';
244: }
245: my $answer=reply($cmd,$server);
246: if ($answer eq 'con_lost') {
247: &reconlonc("$perlvar{'lonSockDir'}/$server");
248: my $answer=reply($cmd,$server);
249: if ($answer eq 'con_lost') {
250: my $now=time;
251: my $middlename=$cmd;
252: $middlename=substr($middlename,0,16);
253: $middlename=~s/\W//g;
254: my $dfilename=
255: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
256: $dumpcount++;
257: {
258: my $dfh;
259: if (open($dfh,">$dfilename")) {
260: print $dfh "$cmd\n";
261: close($dfh);
262: }
263: }
264: sleep 2;
265: my $wcmd='';
266: {
267: my $dfh;
268: if (open($dfh,"<$dfilename")) {
269: $wcmd=<$dfh>;
270: close($dfh);
271: }
272: }
273: chomp($wcmd);
274: if ($wcmd eq $cmd) {
275: &logthis("<font color=\"blue\">WARNING: ".
276: "Connection buffer $dfilename: $cmd</font>");
277: &logperm("D:$server:$cmd");
278: return 'con_delayed';
279: } else {
280: &logthis("<font color=\"red\">CRITICAL:"
281: ." Critical connection failed: $server $cmd</font>");
282: &logperm("F:$server:$cmd");
283: return 'con_failed';
284: }
285: }
286: }
287: return $answer;
288: }
289:
290: # ------------------------------------------- check if return value is an error
291:
292: sub error {
293: my ($result) = @_;
294: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
295: if ($2 == 2) { return undef; }
296: return $1;
297: }
298: return undef;
299: }
300:
301: sub convert_and_load_session_env {
302: my ($lonidsdir,$handle)=@_;
303: my @profile;
304: {
305: open(my $idf,"$lonidsdir/$handle.id");
306: flock($idf,LOCK_SH);
307: @profile=<$idf>;
308: close($idf);
309: }
310: my %temp_env;
311: foreach my $line (@profile) {
312: if ($line !~ m/=/) {
313: return 0;
314: }
315: chomp($line);
316: my ($envname,$envvalue)=split(/=/,$line,2);
317: $temp_env{&unescape($envname)} = &unescape($envvalue);
318: }
319: unlink("$lonidsdir/$handle.id");
320: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
321: 0640)) {
322: %disk_env = %temp_env;
323: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
324: untie(%disk_env);
325: }
326: return 1;
327: }
328:
329: # ------------------------------------------- Transfer profile into environment
330: my $env_loaded;
331: sub transfer_profile_to_env {
332: my ($lonidsdir,$handle,$force_transfer) = @_;
333: if (!$force_transfer && $env_loaded) { return; }
334:
335: if (!defined($lonidsdir)) {
336: $lonidsdir = $perlvar{'lonIDsDir'};
337: }
338: if (!defined($handle)) {
339: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
340: }
341:
342: my $convert;
343: {
344: open(my $idf,"$lonidsdir/$handle.id");
345: flock($idf,LOCK_SH);
346: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
347: &GDBM_READER(),0640)) {
348: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
349: untie(%disk_env);
350: } else {
351: $convert = 1;
352: }
353: }
354: if ($convert) {
355: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
356: &logthis("Failed to load session, or convert session.");
357: }
358: }
359:
360: my %remove;
361: while ( my $envname = each(%env) ) {
362: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
363: if ($time < time-300) {
364: $remove{$key}++;
365: }
366: }
367: }
368:
369: $env{'user.environment'} = "$lonidsdir/$handle.id";
370: $env_loaded=1;
371: foreach my $expired_key (keys(%remove)) {
372: &delenv($expired_key);
373: }
374: }
375:
376: sub timed_flock {
377: my ($file,$lock_type) = @_;
378: my $failed=0;
379: eval {
380: local $SIG{__DIE__}='DEFAULT';
381: local $SIG{ALRM}=sub {
382: $failed=1;
383: die("failed lock");
384: };
385: alarm(13);
386: flock($file,$lock_type);
387: alarm(0);
388: };
389: if ($failed) {
390: return undef;
391: } else {
392: return 1;
393: }
394: }
395:
396: # ---------------------------------------------------------- Append Environment
397:
398: sub appenv {
399: my %newenv=@_;
400: foreach my $key (keys(%newenv)) {
401: if (($newenv{$key}=~/^user\.role/) || ($newenv{$key}=~/^user\.priv/)) {
402: &logthis("<font color=\"blue\">WARNING: ".
403: "Attempt to modify environment ".$key." to ".$newenv{$key}
404: .'</font>');
405: delete($newenv{$key});
406: } else {
407: $env{$key}=$newenv{$key};
408: }
409: }
410: open(my $env_file,$env{'user.environment'});
411: if (&timed_flock($env_file,LOCK_EX)
412: &&
413: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
414: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
415: while (my ($key,$value) = each(%newenv)) {
416: $disk_env{$key} = $value;
417: }
418: untie(%disk_env);
419: }
420: return 'ok';
421: }
422: # ----------------------------------------------------- Delete from Environment
423:
424: sub delenv {
425: my $delthis=shift;
426: if (($delthis=~/user\.role/) || ($delthis=~/user\.priv/)) {
427: &logthis("<font color=\"blue\">WARNING: ".
428: "Attempt to delete from environment ".$delthis);
429: return 'error';
430: }
431: open(my $env_file,$env{'user.environment'});
432: if (&timed_flock($env_file,LOCK_EX)
433: &&
434: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
435: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
436: foreach my $key (keys(%disk_env)) {
437: if ($key=~/^$delthis/) {
438: delete($env{$key});
439: delete($disk_env{$key});
440: }
441: }
442: untie(%disk_env);
443: }
444: return 'ok';
445: }
446:
447: sub get_env_multiple {
448: my ($name) = @_;
449: my @values;
450: if (defined($env{$name})) {
451: # exists is it an array
452: if (ref($env{$name})) {
453: @values=@{ $env{$name} };
454: } else {
455: $values[0]=$env{$name};
456: }
457: }
458: return(@values);
459: }
460:
461: # ------------------------------------------ Find out current server userload
462: # there is a copy in lond
463: sub userload {
464: my $numusers=0;
465: {
466: opendir(LONIDS,$perlvar{'lonIDsDir'});
467: my $filename;
468: my $curtime=time;
469: while ($filename=readdir(LONIDS)) {
470: if ($filename eq '.' || $filename eq '..') {next;}
471: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
472: if ($curtime-$mtime < 1800) { $numusers++; }
473: }
474: closedir(LONIDS);
475: }
476: my $userloadpercent=0;
477: my $maxuserload=$perlvar{'lonUserLoadLim'};
478: if ($maxuserload) {
479: $userloadpercent=100*$numusers/$maxuserload;
480: }
481: $userloadpercent=sprintf("%.2f",$userloadpercent);
482: return $userloadpercent;
483: }
484:
485: # ------------------------------------------ Fight off request when overloaded
486:
487: sub overloaderror {
488: my ($r,$checkserver)=@_;
489: unless ($checkserver) { $checkserver=$perlvar{'lonHostID'}; }
490: my $loadavg;
491: if ($checkserver eq $perlvar{'lonHostID'}) {
492: open(my $loadfile,'/proc/loadavg');
493: $loadavg=<$loadfile>;
494: $loadavg =~ s/\s.*//g;
495: $loadavg = 100*$loadavg/$perlvar{'lonLoadLim'};
496: close($loadfile);
497: } else {
498: $loadavg=&reply('load',$checkserver);
499: }
500: my $overload=$loadavg-100;
501: if ($overload>0) {
502: $r->err_headers_out->{'Retry-After'}=$overload;
503: $r->log_error('Overload of '.$overload.' on '.$checkserver);
504: return 413;
505: }
506: return '';
507: }
508:
509: # ------------------------------ Find server with least workload from spare.tab
510:
511: sub spareserver {
512: my ($loadpercent,$userloadpercent,$want_server_name) = @_;
513: my $spare_server;
514: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
515: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
516: : $userloadpercent;
517:
518: foreach my $try_server (@{ $spareid{'primary'} }) {
519: ($spare_server, $lowest_load) =
520: &compare_server_load($try_server, $spare_server, $lowest_load);
521: }
522:
523: my $found_server = ($spare_server ne '' && $lowest_load < 100);
524:
525: if (!$found_server) {
526: foreach my $try_server (@{ $spareid{'default'} }) {
527: ($spare_server, $lowest_load) =
528: &compare_server_load($try_server, $spare_server, $lowest_load);
529: }
530: }
531:
532: if (!$want_server_name) {
533: $spare_server="http://".&hostname($spare_server);
534: }
535: return $spare_server;
536: }
537:
538: sub compare_server_load {
539: my ($try_server, $spare_server, $lowest_load) = @_;
540:
541: my $loadans = &reply('load', $try_server);
542: my $userloadans = &reply('userload',$try_server);
543:
544: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
545: next; #didn't get a number from the server
546: }
547:
548: my $load;
549: if ($loadans =~ /\d/) {
550: if ($userloadans =~ /\d/) {
551: #both are numbers, pick the bigger one
552: $load = ($loadans > $userloadans) ? $loadans
553: : $userloadans;
554: } else {
555: $load = $loadans;
556: }
557: } else {
558: $load = $userloadans;
559: }
560:
561: if (($load =~ /\d/) && ($load < $lowest_load)) {
562: $spare_server = $try_server;
563: $lowest_load = $load;
564: }
565: return ($spare_server,$lowest_load);
566: }
567: # --------------------------------------------- Try to change a user's password
568:
569: sub changepass {
570: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
571: $currentpass = &escape($currentpass);
572: $newpass = &escape($newpass);
573: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context",
574: $server);
575: if (! $answer) {
576: &logthis("No reply on password change request to $server ".
577: "by $uname in domain $udom.");
578: } elsif ($answer =~ "^ok") {
579: &logthis("$uname in $udom successfully changed their password ".
580: "on $server.");
581: } elsif ($answer =~ "^pwchange_failure") {
582: &logthis("$uname in $udom was unable to change their password ".
583: "on $server. The action was blocked by either lcpasswd ".
584: "or pwchange");
585: } elsif ($answer =~ "^non_authorized") {
586: &logthis("$uname in $udom did not get their password correct when ".
587: "attempting to change it on $server.");
588: } elsif ($answer =~ "^auth_mode_error") {
589: &logthis("$uname in $udom attempted to change their password despite ".
590: "not being locally or internally authenticated on $server.");
591: } elsif ($answer =~ "^unknown_user") {
592: &logthis("$uname in $udom attempted to change their password ".
593: "on $server but were unable to because $server is not ".
594: "their home server.");
595: } elsif ($answer =~ "^refused") {
596: &logthis("$server refused to change $uname in $udom password because ".
597: "it was sent an unencrypted request to change the password.");
598: }
599: return $answer;
600: }
601:
602: # ----------------------- Try to determine user's current authentication scheme
603:
604: sub queryauthenticate {
605: my ($uname,$udom)=@_;
606: my $uhome=&homeserver($uname,$udom);
607: if (!$uhome) {
608: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
609: return 'no_host';
610: }
611: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
612: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
613: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
614: }
615: return $answer;
616: }
617:
618: # --------- Try to authenticate user from domain's lib servers (first this one)
619:
620: sub authenticate {
621: my ($uname,$upass,$udom)=@_;
622: $upass=&escape($upass);
623: $uname= &LONCAPA::clean_username($uname);
624: my $uhome=&homeserver($uname,$udom,1);
625: if ((!$uhome) || ($uhome eq 'no_host')) {
626: # Maybe the machine was offline and only re-appeared again recently?
627: &reconlonc();
628: # One more
629: my $uhome=&homeserver($uname,$udom,1);
630: if ((!$uhome) || ($uhome eq 'no_host')) {
631: &logthis("User $uname at $udom is unknown in authenticate");
632: }
633: return 'no_host';
634: }
635: my $answer=reply("encrypt:auth:$udom:$uname:$upass",$uhome);
636: if ($answer eq 'authorized') {
637: &logthis("User $uname at $udom authorized by $uhome");
638: return $uhome;
639: }
640: if ($answer eq 'non_authorized') {
641: &logthis("User $uname at $udom rejected by $uhome");
642: return 'no_host';
643: }
644: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
645: return 'no_host';
646: }
647:
648: # ---------------------- Find the homebase for a user from domain's lib servers
649:
650: my %homecache;
651: sub homeserver {
652: my ($uname,$udom,$ignoreBadCache)=@_;
653: my $index="$uname:$udom";
654:
655: if (exists($homecache{$index})) { return $homecache{$index}; }
656:
657: my %servers = &get_servers($udom,'library');
658: foreach my $tryserver (keys(%servers)) {
659: next if ($ignoreBadCache ne 'true' &&
660: exists($badServerCache{$tryserver}));
661:
662: my $answer=reply("home:$udom:$uname",$tryserver);
663: if ($answer eq 'found') {
664: delete($badServerCache{$tryserver});
665: return $homecache{$index}=$tryserver;
666: } elsif ($answer eq 'no_host') {
667: $badServerCache{$tryserver}=1;
668: }
669: }
670: return 'no_host';
671: }
672:
673: # ------------------------------------- Find the usernames behind a list of IDs
674:
675: sub idget {
676: my ($udom,@ids)=@_;
677: my %returnhash=();
678:
679: my %servers = &get_servers($udom,'library');
680: foreach my $tryserver (keys(%servers)) {
681: my $idlist=join('&',@ids);
682: $idlist=~tr/A-Z/a-z/;
683: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
684: my @answer=();
685: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
686: @answer=split(/\&/,$reply);
687: } ;
688: my $i;
689: for ($i=0;$i<=$#ids;$i++) {
690: if ($answer[$i]) {
691: $returnhash{$ids[$i]}=$answer[$i];
692: }
693: }
694: }
695: return %returnhash;
696: }
697:
698: # ------------------------------------- Find the IDs behind a list of usernames
699:
700: sub idrget {
701: my ($udom,@unames)=@_;
702: my %returnhash=();
703: foreach my $uname (@unames) {
704: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
705: }
706: return %returnhash;
707: }
708:
709: # ------------------------------- Store away a list of names and associated IDs
710:
711: sub idput {
712: my ($udom,%ids)=@_;
713: my %servers=();
714: foreach my $uname (keys(%ids)) {
715: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
716: my $uhom=&homeserver($uname,$udom);
717: if ($uhom ne 'no_host') {
718: my $id=&escape($ids{$uname});
719: $id=~tr/A-Z/a-z/;
720: my $esc_unam=&escape($uname);
721: if ($servers{$uhom}) {
722: $servers{$uhom}.='&'.$id.'='.$esc_unam;
723: } else {
724: $servers{$uhom}=$id.'='.$esc_unam;
725: }
726: }
727: }
728: foreach my $server (keys(%servers)) {
729: &critical('idput:'.$udom.':'.$servers{$server},$server);
730: }
731: }
732:
733: # ------------------------------------------- get items from domain db files
734:
735: sub get_dom {
736: my ($namespace,$storearr,$udom,$uhome)=@_;
737: my $items='';
738: foreach my $item (@$storearr) {
739: $items.=&escape($item).'&';
740: }
741: $items=~s/\&$//;
742: if (!$udom) {
743: $udom=$env{'user.domain'};
744: if (defined(&domain($udom,'primary'))) {
745: $uhome=&domain($udom,'primary');
746: } else {
747: undef($uhome);
748: }
749: } else {
750: if (!$uhome) {
751: if (defined(&domain($udom,'primary'))) {
752: $uhome=&domain($udom,'primary');
753: }
754: }
755: }
756: if ($udom && $uhome && ($uhome ne 'no_host')) {
757: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
758: my %returnhash;
759: if ($rep eq '' || $rep =~ /^error: 2 /) {
760: return %returnhash;
761: }
762: my @pairs=split(/\&/,$rep);
763: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
764: return @pairs;
765: }
766: my $i=0;
767: foreach my $item (@$storearr) {
768: $returnhash{$item}=&thaw_unescape($pairs[$i]);
769: $i++;
770: }
771: return %returnhash;
772: } else {
773: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
774: }
775: }
776:
777: # -------------------------------------------- put items in domain db files
778:
779: sub put_dom {
780: my ($namespace,$storehash,$udom,$uhome)=@_;
781: if (!$udom) {
782: $udom=$env{'user.domain'};
783: if (defined(&domain($udom,'primary'))) {
784: $uhome=&domain($udom,'primary');
785: } else {
786: undef($uhome);
787: }
788: } else {
789: if (!$uhome) {
790: if (defined(&domain($udom,'primary'))) {
791: $uhome=&domain($udom,'primary');
792: }
793: }
794: }
795: if ($udom && $uhome && ($uhome ne 'no_host')) {
796: my $items='';
797: foreach my $item (keys(%$storehash)) {
798: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
799: }
800: $items=~s/\&$//;
801: return &reply("putdom:$udom:$namespace:$items",$uhome);
802: } else {
803: &logthis("put_dom failed - no homeserver and/or domain");
804: }
805: }
806:
807: sub retrieve_inst_usertypes {
808: my ($udom) = @_;
809: my (%returnhash,@order);
810: if (defined(&domain($udom,'primary'))) {
811: my $uhome=&domain($udom,'primary');
812: my $rep=&reply("inst_usertypes:$udom",$uhome);
813: my ($hashitems,$orderitems) = split(/:/,$rep);
814: my @pairs=split(/\&/,$hashitems);
815: foreach my $item (@pairs) {
816: my ($key,$value)=split(/=/,$item,2);
817: $key = &unescape($key);
818: next if ($key =~ /^error: 2 /);
819: $returnhash{$key}=&thaw_unescape($value);
820: }
821: my @esc_order = split(/\&/,$orderitems);
822: foreach my $item (@esc_order) {
823: push(@order,&unescape($item));
824: }
825: } else {
826: &logthis("get_dom failed - no primary domain server for $udom");
827: }
828: return (\%returnhash,\@order);
829: }
830:
831: sub is_domainimage {
832: my ($url) = @_;
833: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
834: if (&domain($1) ne '') {
835: return '1';
836: }
837: }
838: return;
839: }
840:
841: # --------------------------------------------------- Assign a key to a student
842:
843: sub assign_access_key {
844: #
845: # a valid key looks like uname:udom#comments
846: # comments are being appended
847: #
848: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
849: $kdom=
850: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
851: $knum=
852: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
853: $cdom=
854: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
855: $cnum=
856: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
857: $udom=$env{'user.name'} unless (defined($udom));
858: $uname=$env{'user.domain'} unless (defined($uname));
859: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
860: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
861: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
862: # assigned to this person
863: # - this should not happen,
864: # unless something went wrong
865: # the first time around
866: # ready to assign
867: $logentry=$1.'; '.$logentry;
868: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
869: $kdom,$knum) eq 'ok') {
870: # key now belongs to user
871: my $envkey='key.'.$cdom.'_'.$cnum;
872: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
873: &appenv('environment.'.$envkey => $ckey);
874: return 'ok';
875: } else {
876: return
877: 'error: Count not permanently assign key, will need to be re-entered later.';
878: }
879: } else {
880: return 'error: Could not assign key, try again later.';
881: }
882: } elsif (!$existing{$ckey}) {
883: # the key does not exist
884: return 'error: The key does not exist';
885: } else {
886: # the key is somebody else's
887: return 'error: The key is already in use';
888: }
889: }
890:
891: # ------------------------------------------ put an additional comment on a key
892:
893: sub comment_access_key {
894: #
895: # a valid key looks like uname:udom#comments
896: # comments are being appended
897: #
898: my ($ckey,$cdom,$cnum,$logentry)=@_;
899: $cdom=
900: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
901: $cnum=
902: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
903: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
904: if ($existing{$ckey}) {
905: $existing{$ckey}.='; '.$logentry;
906: # ready to assign
907: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
908: $cdom,$cnum) eq 'ok') {
909: return 'ok';
910: } else {
911: return 'error: Count not store comment.';
912: }
913: } else {
914: # the key does not exist
915: return 'error: The key does not exist';
916: }
917: }
918:
919: # ------------------------------------------------------ Generate a set of keys
920:
921: sub generate_access_keys {
922: my ($number,$cdom,$cnum,$logentry)=@_;
923: $cdom=
924: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
925: $cnum=
926: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
927: unless (&allowed('mky',$cdom)) { return 0; }
928: unless (($cdom) && ($cnum)) { return 0; }
929: if ($number>10000) { return 0; }
930: sleep(2); # make sure don't get same seed twice
931: srand(time()^($$+($$<<15))); # from "Programming Perl"
932: my $total=0;
933: for (my $i=1;$i<=$number;$i++) {
934: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
935: sprintf("%lx",int(100000*rand)).'-'.
936: sprintf("%lx",int(100000*rand));
937: $newkey=~s/1/g/g; # folks mix up 1 and l
938: $newkey=~s/0/h/g; # and also 0 and O
939: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
940: if ($existing{$newkey}) {
941: $i--;
942: } else {
943: if (&put('accesskeys',
944: { $newkey => '# generated '.localtime().
945: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
946: '; '.$logentry },
947: $cdom,$cnum) eq 'ok') {
948: $total++;
949: }
950: }
951: }
952: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
953: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
954: return $total;
955: }
956:
957: # ------------------------------------------------------- Validate an accesskey
958:
959: sub validate_access_key {
960: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
961: $cdom=
962: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
963: $cnum=
964: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
965: $udom=$env{'user.domain'} unless (defined($udom));
966: $uname=$env{'user.name'} unless (defined($uname));
967: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
968: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
969: }
970:
971: # ------------------------------------- Find the section of student in a course
972: sub devalidate_getsection_cache {
973: my ($udom,$unam,$courseid)=@_;
974: my $hashid="$udom:$unam:$courseid";
975: &devalidate_cache_new('getsection',$hashid);
976: }
977:
978: sub courseid_to_courseurl {
979: my ($courseid) = @_;
980: #already url style courseid
981: return $courseid if ($courseid =~ m{^/});
982:
983: if (exists($env{'course.'.$courseid.'.num'})) {
984: my $cnum = $env{'course.'.$courseid.'.num'};
985: my $cdom = $env{'course.'.$courseid.'.domain'};
986: return "/$cdom/$cnum";
987: }
988:
989: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
990: if (exists($courseinfo{'num'})) {
991: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
992: }
993:
994: return undef;
995: }
996:
997: sub getsection {
998: my ($udom,$unam,$courseid)=@_;
999: my $cachetime=1800;
1000:
1001: my $hashid="$udom:$unam:$courseid";
1002: my ($result,$cached)=&is_cached_new('getsection',$hashid);
1003: if (defined($cached)) { return $result; }
1004:
1005: my %Pending;
1006: my %Expired;
1007: #
1008: # Each role can either have not started yet (pending), be active,
1009: # or have expired.
1010: #
1011: # If there is an active role, we are done.
1012: #
1013: # If there is more than one role which has not started yet,
1014: # choose the one which will start sooner
1015: # If there is one role which has not started yet, return it.
1016: #
1017: # If there is more than one expired role, choose the one which ended last.
1018: # If there is a role which has expired, return it.
1019: #
1020: $courseid = &courseid_to_courseurl($courseid);
1021: my %roleshash = &dump('roles',$udom,$unam,$courseid);
1022: foreach my $key (keys(%roleshash)) {
1023: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
1024: my $section=$1;
1025: if ($key eq $courseid.'_st') { $section=''; }
1026: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
1027: my $now=time;
1028: if (defined($end) && $end && ($now > $end)) {
1029: $Expired{$end}=$section;
1030: next;
1031: }
1032: if (defined($start) && $start && ($now < $start)) {
1033: $Pending{$start}=$section;
1034: next;
1035: }
1036: return &do_cache_new('getsection',$hashid,$section,$cachetime);
1037: }
1038: #
1039: # Presumedly there will be few matching roles from the above
1040: # loop and the sorting time will be negligible.
1041: if (scalar(keys(%Pending))) {
1042: my ($time) = sort {$a <=> $b} keys(%Pending);
1043: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
1044: }
1045: if (scalar(keys(%Expired))) {
1046: my @sorted = sort {$a <=> $b} keys(%Expired);
1047: my $time = pop(@sorted);
1048: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
1049: }
1050: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
1051: }
1052:
1053: sub save_cache {
1054: &purge_remembered();
1055: #&Apache::loncommon::validate_page();
1056: undef(%env);
1057: undef($env_loaded);
1058: }
1059:
1060: my $to_remember=-1;
1061: my %remembered;
1062: my %accessed;
1063: my $kicks=0;
1064: my $hits=0;
1065: sub make_key {
1066: my ($name,$id) = @_;
1067: if (length($id) > 65
1068: && length(&escape($id)) > 200) {
1069: $id=length($id).':'.&Digest::MD5::md5_hex($id);
1070: }
1071: return &escape($name.':'.$id);
1072: }
1073:
1074: sub devalidate_cache_new {
1075: my ($name,$id,$debug) = @_;
1076: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
1077: $id=&make_key($name,$id);
1078: $memcache->delete($id);
1079: delete($remembered{$id});
1080: delete($accessed{$id});
1081: }
1082:
1083: sub is_cached_new {
1084: my ($name,$id,$debug) = @_;
1085: $id=&make_key($name,$id);
1086: if (exists($remembered{$id})) {
1087: if ($debug) { &Apache::lonnet::logthis("Earyl return $id of $remembered{$id} "); }
1088: $accessed{$id}=[&gettimeofday()];
1089: $hits++;
1090: return ($remembered{$id},1);
1091: }
1092: my $value = $memcache->get($id);
1093: if (!(defined($value))) {
1094: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
1095: return (undef,undef);
1096: }
1097: if ($value eq '__undef__') {
1098: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
1099: $value=undef;
1100: }
1101: &make_room($id,$value,$debug);
1102: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
1103: return ($value,1);
1104: }
1105:
1106: sub do_cache_new {
1107: my ($name,$id,$value,$time,$debug) = @_;
1108: $id=&make_key($name,$id);
1109: my $setvalue=$value;
1110: if (!defined($setvalue)) {
1111: $setvalue='__undef__';
1112: }
1113: if (!defined($time) ) {
1114: $time=600;
1115: }
1116: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
1117: if (!($memcache->set($id,$setvalue,$time))) {
1118: &logthis("caching of id -> $id failed");
1119: }
1120: # need to make a copy of $value
1121: #&make_room($id,$value,$debug);
1122: return $value;
1123: }
1124:
1125: sub make_room {
1126: my ($id,$value,$debug)=@_;
1127: $remembered{$id}=$value;
1128: if ($to_remember<0) { return; }
1129: $accessed{$id}=[&gettimeofday()];
1130: if (scalar(keys(%remembered)) <= $to_remember) { return; }
1131: my $to_kick;
1132: my $max_time=0;
1133: foreach my $other (keys(%accessed)) {
1134: if (&tv_interval($accessed{$other}) > $max_time) {
1135: $to_kick=$other;
1136: $max_time=&tv_interval($accessed{$other});
1137: }
1138: }
1139: delete($remembered{$to_kick});
1140: delete($accessed{$to_kick});
1141: $kicks++;
1142: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
1143: return;
1144: }
1145:
1146: sub purge_remembered {
1147: #&logthis("Tossing ".scalar(keys(%remembered)));
1148: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
1149: undef(%remembered);
1150: undef(%accessed);
1151: }
1152: # ------------------------------------- Read an entry from a user's environment
1153:
1154: sub userenvironment {
1155: my ($udom,$unam,@what)=@_;
1156: my %returnhash=();
1157: my @answer=split(/\&/,
1158: &reply('get:'.$udom.':'.$unam.':environment:'.join('&',@what),
1159: &homeserver($unam,$udom)));
1160: my $i;
1161: for ($i=0;$i<=$#what;$i++) {
1162: $returnhash{$what[$i]}=&unescape($answer[$i]);
1163: }
1164: return %returnhash;
1165: }
1166:
1167: # ---------------------------------------------------------- Get a studentphoto
1168: sub studentphoto {
1169: my ($udom,$unam,$ext) = @_;
1170: my $home=&Apache::lonnet::homeserver($unam,$udom);
1171: if (defined($env{'request.course.id'})) {
1172: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
1173: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
1174: return(&retrievestudentphoto($udom,$unam,$ext));
1175: } else {
1176: my ($result,$perm_reqd)=
1177: &Apache::lonnet::auto_photo_permission($unam,$udom);
1178: if ($result eq 'ok') {
1179: if (!($perm_reqd eq 'yes')) {
1180: return(&retrievestudentphoto($udom,$unam,$ext));
1181: }
1182: }
1183: }
1184: }
1185: } else {
1186: my ($result,$perm_reqd) =
1187: &Apache::lonnet::auto_photo_permission($unam,$udom);
1188: if ($result eq 'ok') {
1189: if (!($perm_reqd eq 'yes')) {
1190: return(&retrievestudentphoto($udom,$unam,$ext));
1191: }
1192: }
1193: }
1194: return '/adm/lonKaputt/lonlogo_broken.gif';
1195: }
1196:
1197: sub retrievestudentphoto {
1198: my ($udom,$unam,$ext,$type) = @_;
1199: my $home=&Apache::lonnet::homeserver($unam,$udom);
1200: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
1201: if ($ret eq 'ok') {
1202: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
1203: if ($type eq 'thumbnail') {
1204: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
1205: }
1206: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
1207: return $tokenurl;
1208: } else {
1209: if ($type eq 'thumbnail') {
1210: return '/adm/lonKaputt/genericstudent_tn.gif';
1211: } else {
1212: return '/adm/lonKaputt/lonlogo_broken.gif';
1213: }
1214: }
1215: }
1216:
1217: # -------------------------------------------------------------------- New chat
1218:
1219: sub chatsend {
1220: my ($newentry,$anon,$group)=@_;
1221: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1222: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1223: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
1224: &reply('chatsend:'.$cdom.':'.$cnum.':'.
1225: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
1226: &escape($newentry)).':'.$group,$chome);
1227: }
1228:
1229: # ------------------------------------------ Find current version of a resource
1230:
1231: sub getversion {
1232: my $fname=&clutter(shift);
1233: unless ($fname=~/^\/res\//) { return -1; }
1234: return ¤tversion(&filelocation('',$fname));
1235: }
1236:
1237: sub currentversion {
1238: my $fname=shift;
1239: my ($result,$cached)=&is_cached_new('resversion',$fname);
1240: if (defined($cached)) { return $result; }
1241: my $author=$fname;
1242: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1243: my ($udom,$uname)=split(/\//,$author);
1244: my $home=homeserver($uname,$udom);
1245: if ($home eq 'no_host') {
1246: return -1;
1247: }
1248: my $answer=reply("currentversion:$fname",$home);
1249: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1250: return -1;
1251: }
1252: return &do_cache_new('resversion',$fname,$answer,600);
1253: }
1254:
1255: # ----------------------------- Subscribe to a resource, return URL if possible
1256:
1257: sub subscribe {
1258: my $fname=shift;
1259: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
1260: $fname=~s/[\n\r]//g;
1261: my $author=$fname;
1262: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1263: my ($udom,$uname)=split(/\//,$author);
1264: my $home=homeserver($uname,$udom);
1265: if ($home eq 'no_host') {
1266: return 'not_found';
1267: }
1268: my $answer=reply("sub:$fname",$home);
1269: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1270: $answer.=' by '.$home;
1271: }
1272: return $answer;
1273: }
1274:
1275: # -------------------------------------------------------------- Replicate file
1276:
1277: sub repcopy {
1278: my $filename=shift;
1279: $filename=~s/\/+/\//g;
1280: if ($filename=~m|^/home/httpd/html/adm/|) { return 'ok'; }
1281: if ($filename=~m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
1282: if ($filename=~m|^/home/httpd/html/userfiles/| or
1283: $filename=~m -^/*(uploaded|editupload)/-) {
1284: return &repcopy_userfile($filename);
1285: }
1286: $filename=~s/[\n\r]//g;
1287: my $transname="$filename.in.transfer";
1288: # FIXME: this should flock
1289: if ((-e $filename) || (-e $transname)) { return 'ok'; }
1290: my $remoteurl=subscribe($filename);
1291: if ($remoteurl =~ /^con_lost by/) {
1292: &logthis("Subscribe returned $remoteurl: $filename");
1293: return 'unavailable';
1294: } elsif ($remoteurl eq 'not_found') {
1295: #&logthis("Subscribe returned not_found: $filename");
1296: return 'not_found';
1297: } elsif ($remoteurl =~ /^rejected by/) {
1298: &logthis("Subscribe returned $remoteurl: $filename");
1299: return 'forbidden';
1300: } elsif ($remoteurl eq 'directory') {
1301: return 'ok';
1302: } else {
1303: my $author=$filename;
1304: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1305: my ($udom,$uname)=split(/\//,$author);
1306: my $home=homeserver($uname,$udom);
1307: unless ($home eq $perlvar{'lonHostID'}) {
1308: my @parts=split(/\//,$filename);
1309: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
1310: if ($path ne "$perlvar{'lonDocRoot'}/res") {
1311: &logthis("Malconfiguration for replication: $filename");
1312: return 'bad_request';
1313: }
1314: my $count;
1315: for ($count=5;$count<$#parts;$count++) {
1316: $path.="/$parts[$count]";
1317: if ((-e $path)!=1) {
1318: mkdir($path,0777);
1319: }
1320: }
1321: my $ua=new LWP::UserAgent;
1322: my $request=new HTTP::Request('GET',"$remoteurl");
1323: my $response=$ua->request($request,$transname);
1324: if ($response->is_error()) {
1325: unlink($transname);
1326: my $message=$response->status_line;
1327: &logthis("<font color=\"blue\">WARNING:"
1328: ." LWP get: $message: $filename</font>");
1329: return 'unavailable';
1330: } else {
1331: if ($remoteurl!~/\.meta$/) {
1332: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
1333: my $mresponse=$ua->request($mrequest,$filename.'.meta');
1334: if ($mresponse->is_error()) {
1335: unlink($filename.'.meta');
1336: &logthis(
1337: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
1338: }
1339: }
1340: rename($transname,$filename);
1341: return 'ok';
1342: }
1343: }
1344: }
1345: }
1346:
1347: # ------------------------------------------------ Get server side include body
1348: sub ssi_body {
1349: my ($filelink,%form)=@_;
1350: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
1351: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
1352: }
1353: my $output=($filelink=~/^http\:/?&externalssi($filelink):
1354: &ssi($filelink,%form));
1355: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
1356: $output=~s/^.*?\<body[^\>]*\>//si;
1357: $output=~s/(.*)\<\/body\s*\>.*?$/$1/si;
1358: return $output;
1359: }
1360:
1361: # --------------------------------------------------------- Server Side Include
1362:
1363: sub absolute_url {
1364: my ($host_name) = @_;
1365: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
1366: if ($host_name eq '') {
1367: $host_name = $ENV{'SERVER_NAME'};
1368: }
1369: return $protocol.$host_name;
1370: }
1371:
1372: sub ssi {
1373:
1374: my ($fn,%form)=@_;
1375:
1376: my $ua=new LWP::UserAgent;
1377:
1378: my $request;
1379:
1380: $form{'no_update_last_known'}=1;
1381:
1382: if (%form) {
1383: $request=new HTTP::Request('POST',&absolute_url().$fn);
1384: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys %form));
1385: } else {
1386: $request=new HTTP::Request('GET',&absolute_url().$fn);
1387: }
1388:
1389: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
1390: my $response=$ua->request($request);
1391:
1392: return $response->content;
1393: }
1394:
1395: sub externalssi {
1396: my ($url)=@_;
1397: my $ua=new LWP::UserAgent;
1398: my $request=new HTTP::Request('GET',$url);
1399: my $response=$ua->request($request);
1400: return $response->content;
1401: }
1402:
1403: # -------------------------------- Allow a /uploaded/ URI to be vouched for
1404:
1405: sub allowuploaded {
1406: my ($srcurl,$url)=@_;
1407: $url=&clutter(&declutter($url));
1408: my $dir=$url;
1409: $dir=~s/\/[^\/]+$//;
1410: my %httpref=();
1411: my $httpurl=&hreflocation('',$url);
1412: $httpref{'httpref.'.$httpurl}=$srcurl;
1413: &Apache::lonnet::appenv(%httpref);
1414: }
1415:
1416: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
1417: # input: action, courseID, current domain, intended
1418: # path to file, source of file, instruction to parse file for objects,
1419: # ref to hash for embedded objects,
1420: # ref to hash for codebase of java objects.
1421: #
1422: # output: url to file (if action was uploaddoc),
1423: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
1424: #
1425: # Allows directory structure to be used within lonUsers/../userfiles/ for a
1426: # course.
1427: #
1428: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1429: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
1430: # course's home server.
1431: #
1432: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
1433: # be copied from $source (current location) to
1434: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1435: # and will then be copied to
1436: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
1437: # course's home server.
1438: #
1439: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1440: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
1441: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1442: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
1443: # in course's home server.
1444: #
1445:
1446: sub process_coursefile {
1447: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase)=@_;
1448: my $fetchresult;
1449: my $home=&homeserver($docuname,$docudom);
1450: if ($action eq 'propagate') {
1451: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1452: $home);
1453: } else {
1454: my $fpath = '';
1455: my $fname = $file;
1456: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
1457: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
1458: my $filepath = &build_filepath($fpath);
1459: if ($action eq 'copy') {
1460: if ($source eq '') {
1461: $fetchresult = 'no source file';
1462: return $fetchresult;
1463: } else {
1464: my $destination = $filepath.'/'.$fname;
1465: rename($source,$destination);
1466: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1467: $home);
1468: }
1469: } elsif ($action eq 'uploaddoc') {
1470: open(my $fh,'>'.$filepath.'/'.$fname);
1471: print $fh $env{'form.'.$source};
1472: close($fh);
1473: if ($parser eq 'parse') {
1474: my $parse_result = &extract_embedded_items($filepath,$fname,$allfiles,$codebase);
1475: unless ($parse_result eq 'ok') {
1476: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
1477: }
1478: }
1479: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1480: $home);
1481: if ($fetchresult eq 'ok') {
1482: return '/uploaded/'.$fpath.'/'.$fname;
1483: } else {
1484: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1485: ' to host '.$home.': '.$fetchresult);
1486: return '/adm/notfound.html';
1487: }
1488: }
1489: }
1490: unless ( $fetchresult eq 'ok') {
1491: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1492: ' to host '.$home.': '.$fetchresult);
1493: }
1494: return $fetchresult;
1495: }
1496:
1497: sub build_filepath {
1498: my ($fpath) = @_;
1499: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
1500: unless ($fpath eq '') {
1501: my @parts=split('/',$fpath);
1502: foreach my $part (@parts) {
1503: $filepath.= '/'.$part;
1504: if ((-e $filepath)!=1) {
1505: mkdir($filepath,0777);
1506: }
1507: }
1508: }
1509: return $filepath;
1510: }
1511:
1512: sub store_edited_file {
1513: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
1514: my $file = $primary_url;
1515: $file =~ s#^/uploaded/$docudom/$docuname/##;
1516: my $fpath = '';
1517: my $fname = $file;
1518: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
1519: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
1520: my $filepath = &build_filepath($fpath);
1521: open(my $fh,'>'.$filepath.'/'.$fname);
1522: print $fh $content;
1523: close($fh);
1524: my $home=&homeserver($docuname,$docudom);
1525: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1526: $home);
1527: if ($$fetchresult eq 'ok') {
1528: return '/uploaded/'.$fpath.'/'.$fname;
1529: } else {
1530: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1531: ' to host '.$home.': '.$$fetchresult);
1532: return '/adm/notfound.html';
1533: }
1534: }
1535:
1536: sub clean_filename {
1537: my ($fname,$args)=@_;
1538: # Replace Windows backslashes by forward slashes
1539: $fname=~s/\\/\//g;
1540: if (!$args->{'keep_path'}) {
1541: # Get rid of everything but the actual filename
1542: $fname=~s/^.*\/([^\/]+)$/$1/;
1543: }
1544: # Replace spaces by underscores
1545: $fname=~s/\s+/\_/g;
1546: # Replace all other weird characters by nothing
1547: $fname=~s{[^/\w\.\-]}{}g;
1548: # Replace all .\d. sequences with _\d. so they no longer look like version
1549: # numbers
1550: $fname=~s/\.(\d+)(?=\.)/_$1/g;
1551: return $fname;
1552: }
1553:
1554: # --------------- Take an uploaded file and put it into the userfiles directory
1555: # input: $formname - the contents of the file are in $env{"form.$formname"}
1556: # the desired filenam is in $env{"form.$formname.filename"}
1557: # $coursedoc - if true up to the current course
1558: # if false
1559: # $subdir - directory in userfile to store the file into
1560: # $parser - instruction to parse file for objects ($parser = parse)
1561: # $allfiles - reference to hash for embedded objects
1562: # $codebase - reference to hash for codebase of java objects
1563: # $desuname - username for permanent storage of uploaded file
1564: # $dsetudom - domain for permanaent storage of uploaded file
1565: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
1566: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
1567: #
1568: # output: url of file in userspace, or error: <message>
1569: # or /adm/notfound.html if failure to upload occurse
1570:
1571:
1572: sub userfileupload {
1573: my ($formname,$coursedoc,$subdir,$parser,$allfiles,$codebase,$destuname,
1574: $destudom,$thumbwidth,$thumbheight)=@_;
1575: if (!defined($subdir)) { $subdir='unknown'; }
1576: my $fname=$env{'form.'.$formname.'.filename'};
1577: $fname=&clean_filename($fname);
1578: # See if there is anything left
1579: unless ($fname) { return 'error: no uploaded file'; }
1580: chop($env{'form.'.$formname});
1581: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) { #files uploaded to help request form are handled differently
1582: my $now = time;
1583: my $filepath = 'tmp/helprequests/'.$now;
1584: my @parts=split(/\//,$filepath);
1585: my $fullpath = $perlvar{'lonDaemons'};
1586: for (my $i=0;$i<@parts;$i++) {
1587: $fullpath .= '/'.$parts[$i];
1588: if ((-e $fullpath)!=1) {
1589: mkdir($fullpath,0777);
1590: }
1591: }
1592: open(my $fh,'>'.$fullpath.'/'.$fname);
1593: print $fh $env{'form.'.$formname};
1594: close($fh);
1595: return $fullpath.'/'.$fname;
1596: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) { #files uploaded to create course page are handled differently
1597: my $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
1598: '_'.$env{'user.domain'}.'/pending';
1599: my @parts=split(/\//,$filepath);
1600: my $fullpath = $perlvar{'lonDaemons'};
1601: for (my $i=0;$i<@parts;$i++) {
1602: $fullpath .= '/'.$parts[$i];
1603: if ((-e $fullpath)!=1) {
1604: mkdir($fullpath,0777);
1605: }
1606: }
1607: open(my $fh,'>'.$fullpath.'/'.$fname);
1608: print $fh $env{'form.'.$formname};
1609: close($fh);
1610: return $fullpath.'/'.$fname;
1611: }
1612:
1613: # Create the directory if not present
1614: $fname="$subdir/$fname";
1615: if ($coursedoc) {
1616: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
1617: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1618: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
1619: return &finishuserfileupload($docuname,$docudom,
1620: $formname,$fname,$parser,$allfiles,
1621: $codebase,$thumbwidth,$thumbheight);
1622: } else {
1623: $fname=$env{'form.folder'}.'/'.$fname;
1624: return &process_coursefile('uploaddoc',$docuname,$docudom,
1625: $fname,$formname,$parser,
1626: $allfiles,$codebase);
1627: }
1628: } elsif (defined($destuname)) {
1629: my $docuname=$destuname;
1630: my $docudom=$destudom;
1631: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
1632: $parser,$allfiles,$codebase,
1633: $thumbwidth,$thumbheight);
1634:
1635: } else {
1636: my $docuname=$env{'user.name'};
1637: my $docudom=$env{'user.domain'};
1638: if (exists($env{'form.group'})) {
1639: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
1640: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1641: }
1642: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
1643: $parser,$allfiles,$codebase,
1644: $thumbwidth,$thumbheight);
1645: }
1646: }
1647:
1648: sub finishuserfileupload {
1649: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
1650: $thumbwidth,$thumbheight) = @_;
1651: my $path=$docudom.'/'.$docuname.'/';
1652: my $filepath=$perlvar{'lonDocRoot'};
1653: my ($fnamepath,$file,$fetchthumb);
1654: $file=$fname;
1655: if ($fname=~m|/|) {
1656: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
1657: $path.=$fnamepath.'/';
1658: }
1659: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
1660: my $count;
1661: for ($count=4;$count<=$#parts;$count++) {
1662: $filepath.="/$parts[$count]";
1663: if ((-e $filepath)!=1) {
1664: mkdir($filepath,0777);
1665: }
1666: }
1667: # Save the file
1668: {
1669: if (!open(FH,'>'.$filepath.'/'.$file)) {
1670: &logthis('Failed to create '.$filepath.'/'.$file);
1671: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
1672: return '/adm/notfound.html';
1673: }
1674: if (!print FH ($env{'form.'.$formname})) {
1675: &logthis('Failed to write to '.$filepath.'/'.$file);
1676: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
1677: return '/adm/notfound.html';
1678: }
1679: close(FH);
1680: }
1681: if ($parser eq 'parse') {
1682: my $parse_result = &extract_embedded_items($filepath,$file,$allfiles,
1683: $codebase);
1684: unless ($parse_result eq 'ok') {
1685: &logthis('Failed to parse '.$filepath.$file.
1686: ' for embedded media: '.$parse_result);
1687: }
1688: }
1689: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
1690: my $input = $filepath.'/'.$file;
1691: my $output = $filepath.'/'.'tn-'.$file;
1692: my $thumbsize = $thumbwidth.'x'.$thumbheight;
1693: system("convert -sample $thumbsize $input $output");
1694: if (-e $filepath.'/'.'tn-'.$file) {
1695: $fetchthumb = 1;
1696: }
1697: }
1698:
1699: # Notify homeserver to grep it
1700: #
1701: my $docuhome=&homeserver($docuname,$docudom);
1702: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
1703: if ($fetchresult eq 'ok') {
1704: if ($fetchthumb) {
1705: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
1706: if ($thumbresult ne 'ok') {
1707: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
1708: $docuhome.': '.$thumbresult);
1709: }
1710: }
1711: #
1712: # Return the URL to it
1713: return '/uploaded/'.$path.$file;
1714: } else {
1715: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
1716: ': '.$fetchresult);
1717: return '/adm/notfound.html';
1718: }
1719: }
1720:
1721: sub extract_embedded_items {
1722: my ($filepath,$file,$allfiles,$codebase,$content) = @_;
1723: my @state = ();
1724: my %javafiles = (
1725: codebase => '',
1726: code => '',
1727: archive => ''
1728: );
1729: my %mediafiles = (
1730: src => '',
1731: movie => '',
1732: );
1733: my $p;
1734: if ($content) {
1735: $p = HTML::LCParser->new($content);
1736: } else {
1737: $p = HTML::LCParser->new($filepath.'/'.$file);
1738: }
1739: while (my $t=$p->get_token()) {
1740: if ($t->[0] eq 'S') {
1741: my ($tagname, $attr) = ($t->[1],$t->[2]);
1742: push (@state, $tagname);
1743: if (lc($tagname) eq 'allow') {
1744: &add_filetype($allfiles,$attr->{'src'},'src');
1745: }
1746: if (lc($tagname) eq 'img') {
1747: &add_filetype($allfiles,$attr->{'src'},'src');
1748: }
1749: if (lc($tagname) eq 'script') {
1750: if ($attr->{'archive'} =~ /\.jar$/i) {
1751: &add_filetype($allfiles,$attr->{'archive'},'archive');
1752: } else {
1753: &add_filetype($allfiles,$attr->{'src'},'src');
1754: }
1755: }
1756: if (lc($tagname) eq 'link') {
1757: if (lc($attr->{'rel'}) eq 'stylesheet') {
1758: &add_filetype($allfiles,$attr->{'href'},'href');
1759: }
1760: }
1761: if (lc($tagname) eq 'object' ||
1762: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
1763: foreach my $item (keys(%javafiles)) {
1764: $javafiles{$item} = '';
1765: }
1766: }
1767: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
1768: my $name = lc($attr->{'name'});
1769: foreach my $item (keys(%javafiles)) {
1770: if ($name eq $item) {
1771: $javafiles{$item} = $attr->{'value'};
1772: last;
1773: }
1774: }
1775: foreach my $item (keys(%mediafiles)) {
1776: if ($name eq $item) {
1777: &add_filetype($allfiles, $attr->{'value'}, 'value');
1778: last;
1779: }
1780: }
1781: }
1782: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
1783: foreach my $item (keys(%javafiles)) {
1784: if ($attr->{$item}) {
1785: $javafiles{$item} = $attr->{$item};
1786: last;
1787: }
1788: }
1789: foreach my $item (keys(%mediafiles)) {
1790: if ($attr->{$item}) {
1791: &add_filetype($allfiles,$attr->{$item},$item);
1792: last;
1793: }
1794: }
1795: }
1796: } elsif ($t->[0] eq 'E') {
1797: my ($tagname) = ($t->[1]);
1798: if ($javafiles{'codebase'} ne '') {
1799: $javafiles{'codebase'} .= '/';
1800: }
1801: if (lc($tagname) eq 'applet' ||
1802: lc($tagname) eq 'object' ||
1803: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
1804: ) {
1805: foreach my $item (keys(%javafiles)) {
1806: if ($item ne 'codebase' && $javafiles{$item} ne '') {
1807: my $file=$javafiles{'codebase'}.$javafiles{$item};
1808: &add_filetype($allfiles,$file,$item);
1809: }
1810: }
1811: }
1812: pop @state;
1813: }
1814: }
1815: return 'ok';
1816: }
1817:
1818: sub add_filetype {
1819: my ($allfiles,$file,$type)=@_;
1820: if (exists($allfiles->{$file})) {
1821: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
1822: push(@{$allfiles->{$file}}, &escape($type));
1823: }
1824: } else {
1825: @{$allfiles->{$file}} = (&escape($type));
1826: }
1827: }
1828:
1829: sub removeuploadedurl {
1830: my ($url)=@_;
1831: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
1832: return &removeuserfile($uname,$udom,$fname);
1833: }
1834:
1835: sub removeuserfile {
1836: my ($docuname,$docudom,$fname)=@_;
1837: my $home=&homeserver($docuname,$docudom);
1838: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
1839: if ($result eq 'ok') {
1840: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
1841: my $metafile = $fname.'.meta';
1842: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
1843: my $url = "/uploaded/$docudom/$docuname/$fname";
1844: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
1845: my $sqlresult =
1846: &update_portfolio_table($docuname,$docudom,$file,
1847: 'portfolio_metadata',$group,
1848: 'delete');
1849: }
1850: }
1851: return $result;
1852: }
1853:
1854: sub mkdiruserfile {
1855: my ($docuname,$docudom,$dir)=@_;
1856: my $home=&homeserver($docuname,$docudom);
1857: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
1858: }
1859:
1860: sub renameuserfile {
1861: my ($docuname,$docudom,$old,$new)=@_;
1862: my $home=&homeserver($docuname,$docudom);
1863: my $result = &reply("renameuserfile:$docudom:$docuname:".
1864: &escape("$old").':'.&escape("$new"),$home);
1865: if ($result eq 'ok') {
1866: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
1867: my $oldmeta = $old.'.meta';
1868: my $newmeta = $new.'.meta';
1869: my $metaresult =
1870: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
1871: my $url = "/uploaded/$docudom/$docuname/$old";
1872: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
1873: my $sqlresult =
1874: &update_portfolio_table($docuname,$docudom,$file,
1875: 'portfolio_metadata',$group,
1876: 'delete');
1877: }
1878: }
1879: return $result;
1880: }
1881:
1882: # ------------------------------------------------------------------------- Log
1883:
1884: sub log {
1885: my ($dom,$nam,$hom,$what)=@_;
1886: return critical("log:$dom:$nam:$what",$hom);
1887: }
1888:
1889: # ------------------------------------------------------------------ Course Log
1890: #
1891: # This routine flushes several buffers of non-mission-critical nature
1892: #
1893:
1894: sub flushcourselogs {
1895: &logthis('Flushing log buffers');
1896: #
1897: # course logs
1898: # This is a log of all transactions in a course, which can be used
1899: # for data mining purposes
1900: #
1901: # It also collects the courseid database, which lists last transaction
1902: # times and course titles for all courseids
1903: #
1904: my %courseidbuffer=();
1905: foreach my $crsid (keys %courselogs) {
1906: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
1907: &escape($courselogs{$crsid}),
1908: $coursehombuf{$crsid}) eq 'ok') {
1909: delete $courselogs{$crsid};
1910: } else {
1911: &logthis('Failed to flush log buffer for '.$crsid);
1912: if (length($courselogs{$crsid})>40000) {
1913: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
1914: " exceeded maximum size, deleting.</font>");
1915: delete $courselogs{$crsid};
1916: }
1917: }
1918: if ($courseidbuffer{$coursehombuf{$crsid}}) {
1919: $courseidbuffer{$coursehombuf{$crsid}}.='&'.
1920: &escape($crsid).'='.&escape($coursedescrbuf{$crsid}).
1921: ':'.&escape($courseinstcodebuf{$crsid}).':'.&escape($courseownerbuf{$crsid}).':'.&escape($coursetypebuf{$crsid});
1922: } else {
1923: $courseidbuffer{$coursehombuf{$crsid}}=
1924: &escape($crsid).'='.&escape($coursedescrbuf{$crsid}).
1925: ':'.&escape($courseinstcodebuf{$crsid}).':'.&escape($courseownerbuf{$crsid}).':'.&escape($coursetypebuf{$crsid});
1926: }
1927: }
1928: #
1929: # Write course id database (reverse lookup) to homeserver of courses
1930: # Is used in pickcourse
1931: #
1932: foreach my $crs_home (keys(%courseidbuffer)) {
1933: &courseidput(&host_domain($crs_home),$courseidbuffer{$crs_home},
1934: $crs_home);
1935: }
1936: #
1937: # File accesses
1938: # Writes to the dynamic metadata of resources to get hit counts, etc.
1939: #
1940: foreach my $entry (keys(%accesshash)) {
1941: if ($entry =~ /___count$/) {
1942: my ($dom,$name);
1943: ($dom,$name,undef)=
1944: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
1945: if (! defined($dom) || $dom eq '' ||
1946: ! defined($name) || $name eq '') {
1947: my $cid = $env{'request.course.id'};
1948: $dom = $env{'request.'.$cid.'.domain'};
1949: $name = $env{'request.'.$cid.'.num'};
1950: }
1951: my $value = $accesshash{$entry};
1952: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
1953: my %temphash=($url => $value);
1954: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
1955: if ($result eq 'ok') {
1956: delete $accesshash{$entry};
1957: } elsif ($result eq 'unknown_cmd') {
1958: # Target server has old code running on it.
1959: my %temphash=($entry => $value);
1960: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
1961: delete $accesshash{$entry};
1962: }
1963: }
1964: } else {
1965: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
1966: my %temphash=($entry => $accesshash{$entry});
1967: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
1968: delete $accesshash{$entry};
1969: }
1970: }
1971: }
1972: #
1973: # Roles
1974: # Reverse lookup of user roles for course faculty/staff and co-authorship
1975: #
1976: foreach my $entry (keys(%userrolehash)) {
1977: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
1978: split(/\:/,$entry);
1979: if (&Apache::lonnet::put('nohist_userroles',
1980: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
1981: $rudom,$runame) eq 'ok') {
1982: delete $userrolehash{$entry};
1983: }
1984: }
1985: #
1986: # Reverse lookup of domain roles (dc, ad, li, sc, au)
1987: #
1988: my %domrolebuffer = ();
1989: foreach my $entry (keys %domainrolehash) {
1990: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split/:/,$entry;
1991: if ($domrolebuffer{$rudom}) {
1992: $domrolebuffer{$rudom}.='&'.&escape($entry).
1993: '='.&escape($domainrolehash{$entry});
1994: } else {
1995: $domrolebuffer{$rudom}.=&escape($entry).
1996: '='.&escape($domainrolehash{$entry});
1997: }
1998: delete $domainrolehash{$entry};
1999: }
2000: foreach my $dom (keys(%domrolebuffer)) {
2001: my %servers = &get_servers($dom,'library');
2002: foreach my $tryserver (keys(%servers)) {
2003: unless (&reply('domroleput:'.$dom.':'.
2004: $domrolebuffer{$dom},$tryserver) eq 'ok') {
2005: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
2006: }
2007: }
2008: }
2009: $dumpcount++;
2010: }
2011:
2012: sub courselog {
2013: my $what=shift;
2014: $what=time.':'.$what;
2015: unless ($env{'request.course.id'}) { return ''; }
2016: $coursedombuf{$env{'request.course.id'}}=
2017: $env{'course.'.$env{'request.course.id'}.'.domain'};
2018: $coursenumbuf{$env{'request.course.id'}}=
2019: $env{'course.'.$env{'request.course.id'}.'.num'};
2020: $coursehombuf{$env{'request.course.id'}}=
2021: $env{'course.'.$env{'request.course.id'}.'.home'};
2022: $coursedescrbuf{$env{'request.course.id'}}=
2023: $env{'course.'.$env{'request.course.id'}.'.description'};
2024: $courseinstcodebuf{$env{'request.course.id'}}=
2025: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
2026: $courseownerbuf{$env{'request.course.id'}}=
2027: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
2028: $coursetypebuf{$env{'request.course.id'}}=
2029: $env{'course.'.$env{'request.course.id'}.'.type'};
2030: if (defined $courselogs{$env{'request.course.id'}}) {
2031: $courselogs{$env{'request.course.id'}}.='&'.$what;
2032: } else {
2033: $courselogs{$env{'request.course.id'}}.=$what;
2034: }
2035: if (length($courselogs{$env{'request.course.id'}})>4048) {
2036: &flushcourselogs();
2037: }
2038: }
2039:
2040: sub courseacclog {
2041: my $fnsymb=shift;
2042: unless ($env{'request.course.id'}) { return ''; }
2043: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
2044: if ($fnsymb=~/(problem|exam|quiz|assess|survey|form|task|page)$/) {
2045: $what.=':POST';
2046: # FIXME: Probably ought to escape things....
2047: foreach my $key (keys(%env)) {
2048: if ($key=~/^form\.(.*)/) {
2049: $what.=':'.$1.'='.$env{$key};
2050: }
2051: }
2052: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
2053: # FIXME: We should not be depending on a form parameter that someone
2054: # editing lonsearchcat.pm might change in the future.
2055: if ($env{'form.phase'} eq 'course_search') {
2056: $what.= ':POST';
2057: # FIXME: Probably ought to escape things....
2058: foreach my $element ('courseexp','crsfulltext','crsrelated',
2059: 'crsdiscuss') {
2060: $what.=':'.$element.'='.$env{'form.'.$element};
2061: }
2062: }
2063: }
2064: &courselog($what);
2065: }
2066:
2067: sub countacc {
2068: my $url=&declutter(shift);
2069: return if (! defined($url) || $url eq '');
2070: unless ($env{'request.course.id'}) { return ''; }
2071: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
2072: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
2073: $accesshash{$key}++;
2074: }
2075:
2076: sub linklog {
2077: my ($from,$to)=@_;
2078: $from=&declutter($from);
2079: $to=&declutter($to);
2080: $accesshash{$from.'___'.$to.'___comefrom'}=1;
2081: $accesshash{$to.'___'.$from.'___goto'}=1;
2082: }
2083:
2084: sub userrolelog {
2085: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
2086: if (($trole=~/^ca/) || ($trole=~/^aa/) ||
2087: ($trole=~/^in/) || ($trole=~/^cc/) ||
2088: ($trole=~/^ep/) || ($trole=~/^cr/) ||
2089: ($trole=~/^ta/)) {
2090: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2091: $userrolehash
2092: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2093: =$tend.':'.$tstart;
2094: }
2095: if (($trole=~/^dc/) || ($trole=~/^ad/) ||
2096: ($trole=~/^li/) || ($trole=~/^li/) ||
2097: ($trole=~/^au/) || ($trole=~/^dg/) ||
2098: ($trole=~/^sc/)) {
2099: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2100: $domainrolehash
2101: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2102: = $tend.':'.$tstart;
2103: }
2104: }
2105:
2106: sub get_course_adv_roles {
2107: my $cid=shift;
2108: $cid=$env{'request.course.id'} unless (defined($cid));
2109: my %coursehash=&coursedescription($cid);
2110: my %nothide=();
2111: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2112: $nothide{join(':',split(/[\@\:]/,$user))}=1;
2113: }
2114: my %returnhash=();
2115: my %dumphash=
2116: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
2117: my $now=time;
2118: foreach my $entry (keys %dumphash) {
2119: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
2120: if (($tstart) && ($tstart<0)) { next; }
2121: if (($tend) && ($tend<$now)) { next; }
2122: if (($tstart) && ($now<$tstart)) { next; }
2123: my ($role,$username,$domain,$section)=split(/\:/,$entry);
2124: if ($username eq '' || $domain eq '') { next; }
2125: if ((&privileged($username,$domain)) &&
2126: (!$nothide{$username.':'.$domain})) { next; }
2127: if ($role eq 'cr') { next; }
2128: my $key=&plaintext($role);
2129: if ($section) { $key.=' (Sec/Grp '.$section.')'; }
2130: if ($returnhash{$key}) {
2131: $returnhash{$key}.=','.$username.':'.$domain;
2132: } else {
2133: $returnhash{$key}=$username.':'.$domain;
2134: }
2135: }
2136: return %returnhash;
2137: }
2138:
2139: sub get_my_roles {
2140: my ($uname,$udom,$context,$types,$roles,$roledoms)=@_;
2141: unless (defined($uname)) { $uname=$env{'user.name'}; }
2142: unless (defined($udom)) { $udom=$env{'user.domain'}; }
2143: my %dumphash;
2144: if ($context eq 'userroles') {
2145: %dumphash = &dump('roles',$udom,$uname);
2146: } else {
2147: %dumphash=
2148: &dump('nohist_userroles',$udom,$uname);
2149: }
2150: my %returnhash=();
2151: my $now=time;
2152: foreach my $entry (keys(%dumphash)) {
2153: my ($role,$tend,$tstart);
2154: if ($context eq 'userroles') {
2155: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
2156: } else {
2157: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
2158: }
2159: if (($tstart) && ($tstart<0)) { next; }
2160: my $status = 'active';
2161: if (($tend) && ($tend<$now)) {
2162: $status = 'previous';
2163: }
2164: if (($tstart) && ($now<$tstart)) {
2165: $status = 'future';
2166: }
2167: if (ref($types) eq 'ARRAY') {
2168: if (!grep(/^\Q$status\E$/,@{$types})) {
2169: next;
2170: }
2171: } else {
2172: if ($status ne 'active') {
2173: next;
2174: }
2175: }
2176: my ($rolecode,$username,$domain,$section,$area);
2177: if ($context eq 'userroles') {
2178: ($area,$rolecode) = split(/_/,$entry);
2179: (undef,$domain,$username,$section) = split(/\//,$area);
2180: } else {
2181: ($role,$username,$domain,$section) = split(/\:/,$entry);
2182: }
2183: if (ref($roledoms) eq 'ARRAY') {
2184: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
2185: next;
2186: }
2187: }
2188: if (ref($roles) eq 'ARRAY') {
2189: if (!grep(/^\Q$role\E$/,@{$roles})) {
2190: next;
2191: }
2192: }
2193: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
2194: }
2195: return %returnhash;
2196: }
2197:
2198: # ----------------------------------------------------- Frontpage Announcements
2199: #
2200: #
2201:
2202: sub postannounce {
2203: my ($server,$text)=@_;
2204: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
2205: unless ($text=~/\w/) { $text=''; }
2206: return &reply('setannounce:'.&escape($text),$server);
2207: }
2208:
2209: sub getannounce {
2210:
2211: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
2212: my $announcement='';
2213: while (my $line = <$fh>) { $announcement .= $line; }
2214: close($fh);
2215: if ($announcement=~/\w/) {
2216: return
2217: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
2218: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
2219: } else {
2220: return '';
2221: }
2222: } else {
2223: return '';
2224: }
2225: }
2226:
2227: # ---------------------------------------------------------- Course ID routines
2228: # Deal with domain's nohist_courseid.db files
2229: #
2230:
2231: sub courseidput {
2232: my ($domain,$what,$coursehome)=@_;
2233: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
2234: }
2235:
2236: sub courseiddump {
2237: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,$coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok)=@_;
2238: my %returnhash=();
2239: unless ($domfilter) { $domfilter=''; }
2240: my %libserv = &all_library();
2241: foreach my $tryserver (keys(%libserv)) {
2242: if ( ( $hostidflag == 1
2243: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
2244: || (!defined($hostidflag)) ) {
2245:
2246: if ($domfilter eq ''
2247: || (&host_domain($tryserver) eq $domfilter)) {
2248: foreach my $line (
2249: split(/\&/,&reply('courseiddump:'.&host_domain($tryserver).':'.
2250: $sincefilter.':'.&escape($descfilter).':'.
2251: &escape($instcodefilter).':'.&escape($ownerfilter).':'.&escape($coursefilter).':'.&escape($typefilter).':'.&escape($regexp_ok),
2252: $tryserver))) {
2253: my ($key,$value)=split(/\=/,$line,2);
2254: if (($key) && ($value)) {
2255: $returnhash{&unescape($key)}=$value;
2256: }
2257: }
2258: }
2259: }
2260: }
2261: return %returnhash;
2262: }
2263:
2264: # ---------------------------------------------------------- DC e-mail
2265:
2266: sub dcmailput {
2267: my ($domain,$msgid,$message,$server)=@_;
2268: my $status = &Apache::lonnet::critical(
2269: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
2270: &escape($message),$server);
2271: return $status;
2272: }
2273:
2274: sub dcmaildump {
2275: my ($dom,$startdate,$enddate,$senders) = @_;
2276: my %returnhash=();
2277:
2278: if (defined(&domain($dom,'primary'))) {
2279: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
2280: &escape($enddate).':';
2281: my @esc_senders=map { &escape($_)} @$senders;
2282: $cmd.=&escape(join('&',@esc_senders));
2283: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
2284: my ($key,$value) = split(/\=/,$line,2);
2285: if (($key) && ($value)) {
2286: $returnhash{&unescape($key)} = &unescape($value);
2287: }
2288: }
2289: }
2290: return %returnhash;
2291: }
2292: # ---------------------------------------------------------- Domain roles
2293:
2294: sub get_domain_roles {
2295: my ($dom,$roles,$startdate,$enddate)=@_;
2296: if (undef($startdate) || $startdate eq '') {
2297: $startdate = '.';
2298: }
2299: if (undef($enddate) || $enddate eq '') {
2300: $enddate = '.';
2301: }
2302: my $rolelist = join(':',@{$roles});
2303: my %personnel = ();
2304:
2305: my %servers = &get_servers($dom,'library');
2306: foreach my $tryserver (keys(%servers)) {
2307: %{$personnel{$tryserver}}=();
2308: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
2309: &escape($startdate).':'.
2310: &escape($enddate).':'.
2311: &escape($rolelist), $tryserver))) {
2312: my ($key,$value) = split(/\=/,$line,2);
2313: if (($key) && ($value)) {
2314: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
2315: }
2316: }
2317: }
2318: return %personnel;
2319: }
2320:
2321: # ----------------------------------------------------------- Check out an item
2322:
2323: sub get_first_access {
2324: my ($type,$argsymb)=@_;
2325: my ($symb,$courseid,$udom,$uname)=&whichuser();
2326: if ($argsymb) { $symb=$argsymb; }
2327: my ($map,$id,$res)=&decode_symb($symb);
2328: if ($type eq 'map') {
2329: $res=&symbread($map);
2330: } else {
2331: $res=$symb;
2332: }
2333: my %times=&get('firstaccesstimes',["$courseid\0$res"],$udom,$uname);
2334: return $times{"$courseid\0$res"};
2335: }
2336:
2337: sub set_first_access {
2338: my ($type)=@_;
2339: my ($symb,$courseid,$udom,$uname)=&whichuser();
2340: my ($map,$id,$res)=&decode_symb($symb);
2341: if ($type eq 'map') {
2342: $res=&symbread($map);
2343: } else {
2344: $res=$symb;
2345: }
2346: my $firstaccess=&get_first_access($type,$symb);
2347: if (!$firstaccess) {
2348: return &put('firstaccesstimes',{"$courseid\0$res"=>time},$udom,$uname);
2349: }
2350: return 'already_set';
2351: }
2352:
2353: sub checkout {
2354: my ($symb,$tuname,$tudom,$tcrsid)=@_;
2355: my $now=time;
2356: my $lonhost=$perlvar{'lonHostID'};
2357: my $infostr=&escape(
2358: 'CHECKOUTTOKEN&'.
2359: $tuname.'&'.
2360: $tudom.'&'.
2361: $tcrsid.'&'.
2362: $symb.'&'.
2363: $now.'&'.$ENV{'REMOTE_ADDR'});
2364: my $token=&reply('tmpput:'.$infostr,$lonhost);
2365: if ($token=~/^error\:/) {
2366: &logthis("<font color=\"blue\">WARNING: ".
2367: "Checkout tmpput failed ".$tudom.' - '.$tuname.' - '.$symb.
2368: "</font>");
2369: return '';
2370: }
2371:
2372: $token=~s/^(\d+)\_.*\_(\d+)$/$1\*$2\*$lonhost/;
2373: $token=~tr/a-z/A-Z/;
2374:
2375: my %infohash=('resource.0.outtoken' => $token,
2376: 'resource.0.checkouttime' => $now,
2377: 'resource.0.outremote' => $ENV{'REMOTE_ADDR'});
2378:
2379: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
2380: return '';
2381: } else {
2382: &logthis("<font color=\"blue\">WARNING: ".
2383: "Checkout cstore failed ".$tudom.' - '.$tuname.' - '.$symb.
2384: "</font>");
2385: }
2386:
2387: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
2388: &escape('Checkout '.$infostr.' - '.
2389: $token)) ne 'ok') {
2390: return '';
2391: } else {
2392: &logthis("<font color=\"blue\">WARNING: ".
2393: "Checkout log failed ".$tudom.' - '.$tuname.' - '.$symb.
2394: "</font>");
2395: }
2396: return $token;
2397: }
2398:
2399: # ------------------------------------------------------------ Check in an item
2400:
2401: sub checkin {
2402: my $token=shift;
2403: my $now=time;
2404: my ($ta,$tb,$lonhost)=split(/\*/,$token);
2405: $lonhost=~tr/A-Z/a-z/;
2406: my $dtoken=$ta.'_'.&hostname($lonhost).'_'.$tb;
2407: $dtoken=~s/\W/\_/g;
2408: my ($dummy,$tuname,$tudom,$tcrsid,$symb,$chtim,$rmaddr)=
2409: split(/\&/,&unescape(&reply('tmpget:'.$dtoken,$lonhost)));
2410:
2411: unless (($tuname) && ($tudom)) {
2412: &logthis('Check in '.$token.' ('.$dtoken.') failed');
2413: return '';
2414: }
2415:
2416: unless (&allowed('mgr',$tcrsid)) {
2417: &logthis('Check in '.$token.' ('.$dtoken.') unauthorized: '.
2418: $env{'user.name'}.' - '.$env{'user.domain'});
2419: return '';
2420: }
2421:
2422: my %infohash=('resource.0.intoken' => $token,
2423: 'resource.0.checkintime' => $now,
2424: 'resource.0.inremote' => $ENV{'REMOTE_ADDR'});
2425:
2426: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
2427: return '';
2428: }
2429:
2430: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
2431: &escape('Checkin - '.$token)) ne 'ok') {
2432: return '';
2433: }
2434:
2435: return ($symb,$tuname,$tudom,$tcrsid);
2436: }
2437:
2438: # --------------------------------------------- Set Expire Date for Spreadsheet
2439:
2440: sub expirespread {
2441: my ($uname,$udom,$stype,$usymb)=@_;
2442: my $cid=$env{'request.course.id'};
2443: if ($cid) {
2444: my $now=time;
2445: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
2446: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
2447: $env{'course.'.$cid.'.num'}.
2448: ':nohist_expirationdates:'.
2449: &escape($key).'='.$now,
2450: $env{'course.'.$cid.'.home'})
2451: }
2452: return 'ok';
2453: }
2454:
2455: # ----------------------------------------------------- Devalidate Spreadsheets
2456:
2457: sub devalidate {
2458: my ($symb,$uname,$udom)=@_;
2459: my $cid=$env{'request.course.id'};
2460: if ($cid) {
2461: # delete the stored spreadsheets for
2462: # - the student level sheet of this user in course's homespace
2463: # - the assessment level sheet for this resource
2464: # for this user in user's homespace
2465: # - current conditional state info
2466: my $key=$uname.':'.$udom.':';
2467: my $status=
2468: &del('nohist_calculatedsheets',
2469: [$key.'studentcalc:'],
2470: $env{'course.'.$cid.'.domain'},
2471: $env{'course.'.$cid.'.num'})
2472: .' '.
2473: &del('nohist_calculatedsheets_'.$cid,
2474: [$key.'assesscalc:'.$symb],$udom,$uname);
2475: unless ($status eq 'ok ok') {
2476: &logthis('Could not devalidate spreadsheet '.
2477: $uname.' at '.$udom.' for '.
2478: $symb.': '.$status);
2479: }
2480: &delenv('user.state.'.$cid);
2481: }
2482: }
2483:
2484: sub get_scalar {
2485: my ($string,$end) = @_;
2486: my $value;
2487: if ($$string =~ s/^([^&]*?)($end)/$2/) {
2488: $value = $1;
2489: } elsif ($$string =~ s/^([^&]*?)&//) {
2490: $value = $1;
2491: }
2492: return &unescape($value);
2493: }
2494:
2495: sub array2str {
2496: my (@array) = @_;
2497: my $result=&arrayref2str(\@array);
2498: $result=~s/^__ARRAY_REF__//;
2499: $result=~s/__END_ARRAY_REF__$//;
2500: return $result;
2501: }
2502:
2503: sub arrayref2str {
2504: my ($arrayref) = @_;
2505: my $result='__ARRAY_REF__';
2506: foreach my $elem (@$arrayref) {
2507: if(ref($elem) eq 'ARRAY') {
2508: $result.=&arrayref2str($elem).'&';
2509: } elsif(ref($elem) eq 'HASH') {
2510: $result.=&hashref2str($elem).'&';
2511: } elsif(ref($elem)) {
2512: #print("Got a ref of ".(ref($elem))." skipping.");
2513: } else {
2514: $result.=&escape($elem).'&';
2515: }
2516: }
2517: $result=~s/\&$//;
2518: $result .= '__END_ARRAY_REF__';
2519: return $result;
2520: }
2521:
2522: sub hash2str {
2523: my (%hash) = @_;
2524: my $result=&hashref2str(\%hash);
2525: $result=~s/^__HASH_REF__//;
2526: $result=~s/__END_HASH_REF__$//;
2527: return $result;
2528: }
2529:
2530: sub hashref2str {
2531: my ($hashref)=@_;
2532: my $result='__HASH_REF__';
2533: foreach my $key (sort(keys(%$hashref))) {
2534: if (ref($key) eq 'ARRAY') {
2535: $result.=&arrayref2str($key).'=';
2536: } elsif (ref($key) eq 'HASH') {
2537: $result.=&hashref2str($key).'=';
2538: } elsif (ref($key)) {
2539: $result.='=';
2540: #print("Got a ref of ".(ref($key))." skipping.");
2541: } else {
2542: if ($key) {$result.=&escape($key).'=';} else { last; }
2543: }
2544:
2545: if(ref($hashref->{$key}) eq 'ARRAY') {
2546: $result.=&arrayref2str($hashref->{$key}).'&';
2547: } elsif(ref($hashref->{$key}) eq 'HASH') {
2548: $result.=&hashref2str($hashref->{$key}).'&';
2549: } elsif(ref($hashref->{$key})) {
2550: $result.='&';
2551: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
2552: } else {
2553: $result.=&escape($hashref->{$key}).'&';
2554: }
2555: }
2556: $result=~s/\&$//;
2557: $result .= '__END_HASH_REF__';
2558: return $result;
2559: }
2560:
2561: sub str2hash {
2562: my ($string)=@_;
2563: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
2564: return %$hash;
2565: }
2566:
2567: sub str2hashref {
2568: my ($string) = @_;
2569:
2570: my %hash;
2571:
2572: if($string !~ /^__HASH_REF__/) {
2573: if (! ($string eq '' || !defined($string))) {
2574: $hash{'error'}='Not hash reference';
2575: }
2576: return (\%hash, $string);
2577: }
2578:
2579: $string =~ s/^__HASH_REF__//;
2580:
2581: while($string !~ /^__END_HASH_REF__/) {
2582: #key
2583: my $key='';
2584: if($string =~ /^__HASH_REF__/) {
2585: ($key, $string)=&str2hashref($string);
2586: if(defined($key->{'error'})) {
2587: $hash{'error'}='Bad data';
2588: return (\%hash, $string);
2589: }
2590: } elsif($string =~ /^__ARRAY_REF__/) {
2591: ($key, $string)=&str2arrayref($string);
2592: if($key->[0] eq 'Array reference error') {
2593: $hash{'error'}='Bad data';
2594: return (\%hash, $string);
2595: }
2596: } else {
2597: $string =~ s/^(.*?)=//;
2598: $key=&unescape($1);
2599: }
2600: $string =~ s/^=//;
2601:
2602: #value
2603: my $value='';
2604: if($string =~ /^__HASH_REF__/) {
2605: ($value, $string)=&str2hashref($string);
2606: if(defined($value->{'error'})) {
2607: $hash{'error'}='Bad data';
2608: return (\%hash, $string);
2609: }
2610: } elsif($string =~ /^__ARRAY_REF__/) {
2611: ($value, $string)=&str2arrayref($string);
2612: if($value->[0] eq 'Array reference error') {
2613: $hash{'error'}='Bad data';
2614: return (\%hash, $string);
2615: }
2616: } else {
2617: $value=&get_scalar(\$string,'__END_HASH_REF__');
2618: }
2619: $string =~ s/^&//;
2620:
2621: $hash{$key}=$value;
2622: }
2623:
2624: $string =~ s/^__END_HASH_REF__//;
2625:
2626: return (\%hash, $string);
2627: }
2628:
2629: sub str2array {
2630: my ($string)=@_;
2631: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
2632: return @$array;
2633: }
2634:
2635: sub str2arrayref {
2636: my ($string) = @_;
2637: my @array;
2638:
2639: if($string !~ /^__ARRAY_REF__/) {
2640: if (! ($string eq '' || !defined($string))) {
2641: $array[0]='Array reference error';
2642: }
2643: return (\@array, $string);
2644: }
2645:
2646: $string =~ s/^__ARRAY_REF__//;
2647:
2648: while($string !~ /^__END_ARRAY_REF__/) {
2649: my $value='';
2650: if($string =~ /^__HASH_REF__/) {
2651: ($value, $string)=&str2hashref($string);
2652: if(defined($value->{'error'})) {
2653: $array[0] ='Array reference error';
2654: return (\@array, $string);
2655: }
2656: } elsif($string =~ /^__ARRAY_REF__/) {
2657: ($value, $string)=&str2arrayref($string);
2658: if($value->[0] eq 'Array reference error') {
2659: $array[0] ='Array reference error';
2660: return (\@array, $string);
2661: }
2662: } else {
2663: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
2664: }
2665: $string =~ s/^&//;
2666:
2667: push(@array, $value);
2668: }
2669:
2670: $string =~ s/^__END_ARRAY_REF__//;
2671:
2672: return (\@array, $string);
2673: }
2674:
2675: # -------------------------------------------------------------------Temp Store
2676:
2677: sub tmpreset {
2678: my ($symb,$namespace,$domain,$stuname) = @_;
2679: if (!$symb) {
2680: $symb=&symbread();
2681: if (!$symb) { $symb= $env{'request.url'}; }
2682: }
2683: $symb=escape($symb);
2684:
2685: if (!$namespace) { $namespace=$env{'request.state'}; }
2686: $namespace=~s/\//\_/g;
2687: $namespace=~s/\W//g;
2688:
2689: if (!$domain) { $domain=$env{'user.domain'}; }
2690: if (!$stuname) { $stuname=$env{'user.name'}; }
2691: if ($domain eq 'public' && $stuname eq 'public') {
2692: $stuname=$ENV{'REMOTE_ADDR'};
2693: }
2694: my $path=$perlvar{'lonDaemons'}.'/tmp';
2695: my %hash;
2696: if (tie(%hash,'GDBM_File',
2697: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
2698: &GDBM_WRCREAT(),0640)) {
2699: foreach my $key (keys %hash) {
2700: if ($key=~ /:$symb/) {
2701: delete($hash{$key});
2702: }
2703: }
2704: }
2705: }
2706:
2707: sub tmpstore {
2708: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
2709:
2710: if (!$symb) {
2711: $symb=&symbread();
2712: if (!$symb) { $symb= $env{'request.url'}; }
2713: }
2714: $symb=escape($symb);
2715:
2716: if (!$namespace) {
2717: # I don't think we would ever want to store this for a course.
2718: # it seems this will only be used if we don't have a course.
2719: #$namespace=$env{'request.course.id'};
2720: #if (!$namespace) {
2721: $namespace=$env{'request.state'};
2722: #}
2723: }
2724: $namespace=~s/\//\_/g;
2725: $namespace=~s/\W//g;
2726: if (!$domain) { $domain=$env{'user.domain'}; }
2727: if (!$stuname) { $stuname=$env{'user.name'}; }
2728: if ($domain eq 'public' && $stuname eq 'public') {
2729: $stuname=$ENV{'REMOTE_ADDR'};
2730: }
2731: my $now=time;
2732: my %hash;
2733: my $path=$perlvar{'lonDaemons'}.'/tmp';
2734: if (tie(%hash,'GDBM_File',
2735: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
2736: &GDBM_WRCREAT(),0640)) {
2737: $hash{"version:$symb"}++;
2738: my $version=$hash{"version:$symb"};
2739: my $allkeys='';
2740: foreach my $key (keys(%$storehash)) {
2741: $allkeys.=$key.':';
2742: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
2743: }
2744: $hash{"$version:$symb:timestamp"}=$now;
2745: $allkeys.='timestamp';
2746: $hash{"$version:keys:$symb"}=$allkeys;
2747: if (untie(%hash)) {
2748: return 'ok';
2749: } else {
2750: return "error:$!";
2751: }
2752: } else {
2753: return "error:$!";
2754: }
2755: }
2756:
2757: # -----------------------------------------------------------------Temp Restore
2758:
2759: sub tmprestore {
2760: my ($symb,$namespace,$domain,$stuname) = @_;
2761:
2762: if (!$symb) {
2763: $symb=&symbread();
2764: if (!$symb) { $symb= $env{'request.url'}; }
2765: }
2766: $symb=escape($symb);
2767:
2768: if (!$namespace) { $namespace=$env{'request.state'}; }
2769:
2770: if (!$domain) { $domain=$env{'user.domain'}; }
2771: if (!$stuname) { $stuname=$env{'user.name'}; }
2772: if ($domain eq 'public' && $stuname eq 'public') {
2773: $stuname=$ENV{'REMOTE_ADDR'};
2774: }
2775: my %returnhash;
2776: $namespace=~s/\//\_/g;
2777: $namespace=~s/\W//g;
2778: my %hash;
2779: my $path=$perlvar{'lonDaemons'}.'/tmp';
2780: if (tie(%hash,'GDBM_File',
2781: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
2782: &GDBM_READER(),0640)) {
2783: my $version=$hash{"version:$symb"};
2784: $returnhash{'version'}=$version;
2785: my $scope;
2786: for ($scope=1;$scope<=$version;$scope++) {
2787: my $vkeys=$hash{"$scope:keys:$symb"};
2788: my @keys=split(/:/,$vkeys);
2789: my $key;
2790: $returnhash{"$scope:keys"}=$vkeys;
2791: foreach $key (@keys) {
2792: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
2793: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
2794: }
2795: }
2796: if (!(untie(%hash))) {
2797: return "error:$!";
2798: }
2799: } else {
2800: return "error:$!";
2801: }
2802: return %returnhash;
2803: }
2804:
2805: # ----------------------------------------------------------------------- Store
2806:
2807: sub store {
2808: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
2809: my $home='';
2810:
2811: if ($stuname) { $home=&homeserver($stuname,$domain); }
2812:
2813: $symb=&symbclean($symb);
2814: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
2815:
2816: if (!$domain) { $domain=$env{'user.domain'}; }
2817: if (!$stuname) { $stuname=$env{'user.name'}; }
2818:
2819: &devalidate($symb,$stuname,$domain);
2820:
2821: $symb=escape($symb);
2822: if (!$namespace) {
2823: unless ($namespace=$env{'request.course.id'}) {
2824: return '';
2825: }
2826: }
2827: if (!$home) { $home=$env{'user.home'}; }
2828:
2829: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
2830: $$storehash{'host'}=$perlvar{'lonHostID'};
2831:
2832: my $namevalue='';
2833: foreach my $key (keys(%$storehash)) {
2834: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
2835: }
2836: $namevalue=~s/\&$//;
2837: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
2838: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
2839: }
2840:
2841: # -------------------------------------------------------------- Critical Store
2842:
2843: sub cstore {
2844: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
2845: my $home='';
2846:
2847: if ($stuname) { $home=&homeserver($stuname,$domain); }
2848:
2849: $symb=&symbclean($symb);
2850: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
2851:
2852: if (!$domain) { $domain=$env{'user.domain'}; }
2853: if (!$stuname) { $stuname=$env{'user.name'}; }
2854:
2855: &devalidate($symb,$stuname,$domain);
2856:
2857: $symb=escape($symb);
2858: if (!$namespace) {
2859: unless ($namespace=$env{'request.course.id'}) {
2860: return '';
2861: }
2862: }
2863: if (!$home) { $home=$env{'user.home'}; }
2864:
2865: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
2866: $$storehash{'host'}=$perlvar{'lonHostID'};
2867:
2868: my $namevalue='';
2869: foreach my $key (keys(%$storehash)) {
2870: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
2871: }
2872: $namevalue=~s/\&$//;
2873: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
2874: return critical
2875: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
2876: }
2877:
2878: # --------------------------------------------------------------------- Restore
2879:
2880: sub restore {
2881: my ($symb,$namespace,$domain,$stuname) = @_;
2882: my $home='';
2883:
2884: if ($stuname) { $home=&homeserver($stuname,$domain); }
2885:
2886: if (!$symb) {
2887: unless ($symb=escape(&symbread())) { return ''; }
2888: } else {
2889: $symb=&escape(&symbclean($symb));
2890: }
2891: if (!$namespace) {
2892: unless ($namespace=$env{'request.course.id'}) {
2893: return '';
2894: }
2895: }
2896: if (!$domain) { $domain=$env{'user.domain'}; }
2897: if (!$stuname) { $stuname=$env{'user.name'}; }
2898: if (!$home) { $home=$env{'user.home'}; }
2899: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
2900:
2901: my %returnhash=();
2902: foreach my $line (split(/\&/,$answer)) {
2903: my ($name,$value)=split(/\=/,$line);
2904: $returnhash{&unescape($name)}=&thaw_unescape($value);
2905: }
2906: my $version;
2907: for ($version=1;$version<=$returnhash{'version'};$version++) {
2908: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
2909: $returnhash{$item}=$returnhash{$version.':'.$item};
2910: }
2911: }
2912: return %returnhash;
2913: }
2914:
2915: # ---------------------------------------------------------- Course Description
2916:
2917: sub coursedescription {
2918: my ($courseid,$args)=@_;
2919: $courseid=~s/^\///;
2920: $courseid=~s/\_/\//g;
2921: my ($cdomain,$cnum)=split(/\//,$courseid);
2922: my $chome=&homeserver($cnum,$cdomain);
2923: my $normalid=$cdomain.'_'.$cnum;
2924: # need to always cache even if we get errors otherwise we keep
2925: # trying and trying and trying to get the course description.
2926: my %envhash=();
2927: my %returnhash=();
2928:
2929: my $expiretime=600;
2930: if ($env{'request.course.id'} eq $normalid) {
2931: $expiretime=120;
2932: }
2933:
2934: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
2935: if (!$args->{'freshen_cache'}
2936: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
2937: foreach my $key (keys(%env)) {
2938: next if ($key !~ /^\Q$prefix\E(.*)/);
2939: my ($setting) = $1;
2940: $returnhash{$setting} = $env{$key};
2941: }
2942: return %returnhash;
2943: }
2944:
2945: # get the data agin
2946: if (!$args->{'one_time'}) {
2947: $envhash{'course.'.$normalid.'.last_cache'}=time;
2948: }
2949:
2950: if ($chome ne 'no_host') {
2951: %returnhash=&dump('environment',$cdomain,$cnum);
2952: if (!exists($returnhash{'con_lost'})) {
2953: $returnhash{'home'}= $chome;
2954: $returnhash{'domain'} = $cdomain;
2955: $returnhash{'num'} = $cnum;
2956: if (!defined($returnhash{'type'})) {
2957: $returnhash{'type'} = 'Course';
2958: }
2959: while (my ($name,$value) = each %returnhash) {
2960: $envhash{'course.'.$normalid.'.'.$name}=$value;
2961: }
2962: $returnhash{'url'}=&clutter($returnhash{'url'});
2963: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
2964: $env{'user.name'}.'_'.$cdomain.'_'.$cnum;
2965: $envhash{'course.'.$normalid.'.home'}=$chome;
2966: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
2967: $envhash{'course.'.$normalid.'.num'}=$cnum;
2968: }
2969: }
2970: if (!$args->{'one_time'}) {
2971: &appenv(%envhash);
2972: }
2973: return %returnhash;
2974: }
2975:
2976: # -------------------------------------------------See if a user is privileged
2977:
2978: sub privileged {
2979: my ($username,$domain)=@_;
2980: my $rolesdump=&reply("dump:$domain:$username:roles",
2981: &homeserver($username,$domain));
2982: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return 0; }
2983: my $now=time;
2984: if ($rolesdump ne '') {
2985: foreach my $entry (split(/&/,$rolesdump)) {
2986: if ($entry!~/^rolesdef_/) {
2987: my ($area,$role)=split(/=/,$entry);
2988: $area=~s/\_\w\w$//;
2989: my ($trole,$tend,$tstart)=split(/_/,$role);
2990: if (($trole eq 'dc') || ($trole eq 'su')) {
2991: my $active=1;
2992: if ($tend) {
2993: if ($tend<$now) { $active=0; }
2994: }
2995: if ($tstart) {
2996: if ($tstart>$now) { $active=0; }
2997: }
2998: if ($active) { return 1; }
2999: }
3000: }
3001: }
3002: }
3003: return 0;
3004: }
3005:
3006: # -------------------------------------------------------- Get user privileges
3007:
3008: sub rolesinit {
3009: my ($domain,$username,$authhost)=@_;
3010: my $rolesdump=reply("dump:$domain:$username:roles",$authhost);
3011: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return ''; }
3012: my %allroles=();
3013: my %allgroups=();
3014: my $now=time;
3015: my %userroles = ('user.login.time' => $now);
3016: my $group_privs;
3017:
3018: if ($rolesdump ne '') {
3019: foreach my $entry (split(/&/,$rolesdump)) {
3020: if ($entry!~/^rolesdef_/) {
3021: my ($area,$role)=split(/=/,$entry);
3022: $area=~s/\_\w\w$//;
3023: my ($trole,$tend,$tstart,$group_privs);
3024: if ($role=~/^cr/) {
3025: if ($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
3026: ($trole,my $trest)=($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|);
3027: ($tend,$tstart)=split('_',$trest);
3028: } else {
3029: $trole=$role;
3030: }
3031: } elsif ($role =~ m|^gr/|) {
3032: ($trole,$tend,$tstart) = split(/_/,$role);
3033: ($trole,$group_privs) = split(/\//,$trole);
3034: $group_privs = &unescape($group_privs);
3035: } else {
3036: ($trole,$tend,$tstart)=split(/_/,$role);
3037: }
3038: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
3039: $username);
3040: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
3041: if (($tend!=0) && ($tend<$now)) { $trole=''; }
3042: if (($tstart!=0) && ($tstart>$now)) { $trole=''; }
3043: if (($area ne '') && ($trole ne '')) {
3044: my $spec=$trole.'.'.$area;
3045: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
3046: if ($trole =~ /^cr\//) {
3047: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
3048: } elsif ($trole eq 'gr') {
3049: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
3050: } else {
3051: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
3052: }
3053: }
3054: }
3055: }
3056: my ($author,$adv) = &set_userprivs(\%userroles,\%allroles,\%allgroups);
3057: $userroles{'user.adv'} = $adv;
3058: $userroles{'user.author'} = $author;
3059: $env{'user.adv'}=$adv;
3060: }
3061: return \%userroles;
3062: }
3063:
3064: sub set_arearole {
3065: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
3066: # log the associated role with the area
3067: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
3068: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
3069: }
3070:
3071: sub custom_roleprivs {
3072: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
3073: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
3074: my $homsvr=homeserver($rauthor,$rdomain);
3075: if (&hostname($homsvr) ne '') {
3076: my ($rdummy,$roledef)=
3077: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
3078: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
3079: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
3080: if (defined($syspriv)) {
3081: $$allroles{'cm./'}.=':'.$syspriv;
3082: $$allroles{$spec.'./'}.=':'.$syspriv;
3083: }
3084: if ($tdomain ne '') {
3085: if (defined($dompriv)) {
3086: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
3087: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
3088: }
3089: if (($trest ne '') && (defined($coursepriv))) {
3090: $$allroles{'cm.'.$area}.=':'.$coursepriv;
3091: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
3092: }
3093: }
3094: }
3095: }
3096: }
3097:
3098: sub group_roleprivs {
3099: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
3100: my $access = 1;
3101: my $now = time;
3102: if (($tend!=0) && ($tend<$now)) { $access = 0; }
3103: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
3104: if ($access) {
3105: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
3106: $$allgroups{$course}{$group} .=':'.$group_privs;
3107: }
3108: }
3109:
3110: sub standard_roleprivs {
3111: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
3112: if (defined($pr{$trole.':s'})) {
3113: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
3114: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
3115: }
3116: if ($tdomain ne '') {
3117: if (defined($pr{$trole.':d'})) {
3118: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
3119: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
3120: }
3121: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
3122: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
3123: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
3124: }
3125: }
3126: }
3127:
3128: sub set_userprivs {
3129: my ($userroles,$allroles,$allgroups) = @_;
3130: my $author=0;
3131: my $adv=0;
3132: my %grouproles = ();
3133: if (keys(%{$allgroups}) > 0) {
3134: foreach my $role (keys %{$allroles}) {
3135: my ($trole,$area,$sec,$extendedarea);
3136: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
3137: $trole = $1;
3138: $area = $2;
3139: $sec = $3;
3140: $extendedarea = $area.$sec;
3141: if (exists($$allgroups{$area})) {
3142: foreach my $group (keys(%{$$allgroups{$area}})) {
3143: my $spec = $trole.'.'.$extendedarea;
3144: $grouproles{$spec.'.'.$area.'/'.$group} =
3145: $$allgroups{$area}{$group};
3146: }
3147: }
3148: }
3149: }
3150: }
3151: foreach my $group (keys(%grouproles)) {
3152: $$allroles{$group} = $grouproles{$group};
3153: }
3154: foreach my $role (keys(%{$allroles})) {
3155: my %thesepriv;
3156: if (($role=~/^au/) || ($role=~/^ca/)) { $author=1; }
3157: foreach my $item (split(/:/,$$allroles{$role})) {
3158: if ($item ne '') {
3159: my ($privilege,$restrictions)=split(/&/,$item);
3160: if ($restrictions eq '') {
3161: $thesepriv{$privilege}='F';
3162: } elsif ($thesepriv{$privilege} ne 'F') {
3163: $thesepriv{$privilege}.=$restrictions;
3164: }
3165: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
3166: }
3167: }
3168: my $thesestr='';
3169: foreach my $priv (keys(%thesepriv)) {
3170: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
3171: }
3172: $userroles->{'user.priv.'.$role} = $thesestr;
3173: }
3174: return ($author,$adv);
3175: }
3176:
3177: # --------------------------------------------------------------- get interface
3178:
3179: sub get {
3180: my ($namespace,$storearr,$udomain,$uname)=@_;
3181: my $items='';
3182: foreach my $item (@$storearr) {
3183: $items.=&escape($item).'&';
3184: }
3185: $items=~s/\&$//;
3186: if (!$udomain) { $udomain=$env{'user.domain'}; }
3187: if (!$uname) { $uname=$env{'user.name'}; }
3188: my $uhome=&homeserver($uname,$udomain);
3189:
3190: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
3191: my @pairs=split(/\&/,$rep);
3192: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
3193: return @pairs;
3194: }
3195: my %returnhash=();
3196: my $i=0;
3197: foreach my $item (@$storearr) {
3198: $returnhash{$item}=&thaw_unescape($pairs[$i]);
3199: $i++;
3200: }
3201: return %returnhash;
3202: }
3203:
3204: # --------------------------------------------------------------- del interface
3205:
3206: sub del {
3207: my ($namespace,$storearr,$udomain,$uname)=@_;
3208: my $items='';
3209: foreach my $item (@$storearr) {
3210: $items.=&escape($item).'&';
3211: }
3212: $items=~s/\&$//;
3213: if (!$udomain) { $udomain=$env{'user.domain'}; }
3214: if (!$uname) { $uname=$env{'user.name'}; }
3215: my $uhome=&homeserver($uname,$udomain);
3216:
3217: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
3218: }
3219:
3220: # -------------------------------------------------------------- dump interface
3221:
3222: sub dump {
3223: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
3224: if (!$udomain) { $udomain=$env{'user.domain'}; }
3225: if (!$uname) { $uname=$env{'user.name'}; }
3226: my $uhome=&homeserver($uname,$udomain);
3227: if ($regexp) {
3228: $regexp=&escape($regexp);
3229: } else {
3230: $regexp='.';
3231: }
3232: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
3233: my @pairs=split(/\&/,$rep);
3234: my %returnhash=();
3235: foreach my $item (@pairs) {
3236: my ($key,$value)=split(/=/,$item,2);
3237: $key = &unescape($key);
3238: next if ($key =~ /^error: 2 /);
3239: $returnhash{$key}=&thaw_unescape($value);
3240: }
3241: return %returnhash;
3242: }
3243:
3244: # --------------------------------------------------------- dumpstore interface
3245:
3246: sub dumpstore {
3247: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
3248: if (!$udomain) { $udomain=$env{'user.domain'}; }
3249: if (!$uname) { $uname=$env{'user.name'}; }
3250: my $uhome=&homeserver($uname,$udomain);
3251: if ($regexp) {
3252: $regexp=&escape($regexp);
3253: } else {
3254: $regexp='.';
3255: }
3256: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
3257: my @pairs=split(/\&/,$rep);
3258: my %returnhash=();
3259: foreach my $item (@pairs) {
3260: my ($key,$value)=split(/=/,$item,2);
3261: next if ($key =~ /^error: 2 /);
3262: $returnhash{$key}=&thaw_unescape($value);
3263: }
3264: return %returnhash;
3265: }
3266:
3267: # -------------------------------------------------------------- keys interface
3268:
3269: sub getkeys {
3270: my ($namespace,$udomain,$uname)=@_;
3271: if (!$udomain) { $udomain=$env{'user.domain'}; }
3272: if (!$uname) { $uname=$env{'user.name'}; }
3273: my $uhome=&homeserver($uname,$udomain);
3274: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
3275: my @keyarray=();
3276: foreach my $key (split(/\&/,$rep)) {
3277: next if ($key =~ /^error: 2 /);
3278: push(@keyarray,&unescape($key));
3279: }
3280: return @keyarray;
3281: }
3282:
3283: # --------------------------------------------------------------- currentdump
3284: sub currentdump {
3285: my ($courseid,$sdom,$sname)=@_;
3286: $courseid = $env{'request.course.id'} if (! defined($courseid));
3287: $sdom = $env{'user.domain'} if (! defined($sdom));
3288: $sname = $env{'user.name'} if (! defined($sname));
3289: my $uhome = &homeserver($sname,$sdom);
3290: my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
3291: return if ($rep =~ /^(error:|no_such_host)/);
3292: #
3293: my %returnhash=();
3294: #
3295: if ($rep eq "unknown_cmd") {
3296: # an old lond will not know currentdump
3297: # Do a dump and make it look like a currentdump
3298: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
3299: return if ($tmp[0] =~ /^(error:|no_such_host)/);
3300: my %hash = @tmp;
3301: @tmp=();
3302: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
3303: } else {
3304: my @pairs=split(/\&/,$rep);
3305: foreach my $pair (@pairs) {
3306: my ($key,$value)=split(/=/,$pair,2);
3307: my ($symb,$param) = split(/:/,$key);
3308: $returnhash{&unescape($symb)}->{&unescape($param)} =
3309: &thaw_unescape($value);
3310: }
3311: }
3312: return %returnhash;
3313: }
3314:
3315: sub convert_dump_to_currentdump{
3316: my %hash = %{shift()};
3317: my %returnhash;
3318: # Code ripped from lond, essentially. The only difference
3319: # here is the unescaping done by lonnet::dump(). Conceivably
3320: # we might run in to problems with parameter names =~ /^v\./
3321: while (my ($key,$value) = each(%hash)) {
3322: my ($v,$symb,$param) = split(/:/,$key);
3323: $symb = &unescape($symb);
3324: $param = &unescape($param);
3325: next if ($v eq 'version' || $symb eq 'keys');
3326: next if (exists($returnhash{$symb}) &&
3327: exists($returnhash{$symb}->{$param}) &&
3328: $returnhash{$symb}->{'v.'.$param} > $v);
3329: $returnhash{$symb}->{$param}=$value;
3330: $returnhash{$symb}->{'v.'.$param}=$v;
3331: }
3332: #
3333: # Remove all of the keys in the hashes which keep track of
3334: # the version of the parameter.
3335: while (my ($symb,$param_hash) = each(%returnhash)) {
3336: # use a foreach because we are going to delete from the hash.
3337: foreach my $key (keys(%$param_hash)) {
3338: delete($param_hash->{$key}) if ($key =~ /^v\./);
3339: }
3340: }
3341: return \%returnhash;
3342: }
3343:
3344: # ------------------------------------------------------ critical inc interface
3345:
3346: sub cinc {
3347: return &inc(@_,'critical');
3348: }
3349:
3350: # --------------------------------------------------------------- inc interface
3351:
3352: sub inc {
3353: my ($namespace,$store,$udomain,$uname,$critical) = @_;
3354: if (!$udomain) { $udomain=$env{'user.domain'}; }
3355: if (!$uname) { $uname=$env{'user.name'}; }
3356: my $uhome=&homeserver($uname,$udomain);
3357: my $items='';
3358: if (! ref($store)) {
3359: # got a single value, so use that instead
3360: $items = &escape($store).'=&';
3361: } elsif (ref($store) eq 'SCALAR') {
3362: $items = &escape($$store).'=&';
3363: } elsif (ref($store) eq 'ARRAY') {
3364: $items = join('=&',map {&escape($_);} @{$store});
3365: } elsif (ref($store) eq 'HASH') {
3366: while (my($key,$value) = each(%{$store})) {
3367: $items.= &escape($key).'='.&escape($value).'&';
3368: }
3369: }
3370: $items=~s/\&$//;
3371: if ($critical) {
3372: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
3373: } else {
3374: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
3375: }
3376: }
3377:
3378: # --------------------------------------------------------------- put interface
3379:
3380: sub put {
3381: my ($namespace,$storehash,$udomain,$uname)=@_;
3382: if (!$udomain) { $udomain=$env{'user.domain'}; }
3383: if (!$uname) { $uname=$env{'user.name'}; }
3384: my $uhome=&homeserver($uname,$udomain);
3385: my $items='';
3386: foreach my $item (keys(%$storehash)) {
3387: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
3388: }
3389: $items=~s/\&$//;
3390: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
3391: }
3392:
3393: # ------------------------------------------------------------ newput interface
3394:
3395: sub newput {
3396: my ($namespace,$storehash,$udomain,$uname)=@_;
3397: if (!$udomain) { $udomain=$env{'user.domain'}; }
3398: if (!$uname) { $uname=$env{'user.name'}; }
3399: my $uhome=&homeserver($uname,$udomain);
3400: my $items='';
3401: foreach my $key (keys(%$storehash)) {
3402: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3403: }
3404: $items=~s/\&$//;
3405: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
3406: }
3407:
3408: # --------------------------------------------------------- putstore interface
3409:
3410: sub putstore {
3411: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
3412: if (!$udomain) { $udomain=$env{'user.domain'}; }
3413: if (!$uname) { $uname=$env{'user.name'}; }
3414: my $uhome=&homeserver($uname,$udomain);
3415: my $items='';
3416: foreach my $key (keys(%$storehash)) {
3417: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
3418: }
3419: $items=~s/\&$//;
3420: my $esc_symb=&escape($symb);
3421: my $esc_v=&escape($version);
3422: my $reply =
3423: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
3424: $uhome);
3425: if ($reply eq 'unknown_cmd') {
3426: # gfall back to way things use to be done
3427: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
3428: $uname);
3429: }
3430: return $reply;
3431: }
3432:
3433: sub old_putstore {
3434: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
3435: if (!$udomain) { $udomain=$env{'user.domain'}; }
3436: if (!$uname) { $uname=$env{'user.name'}; }
3437: my $uhome=&homeserver($uname,$udomain);
3438: my %newstorehash;
3439: foreach my $item (keys(%$storehash)) {
3440: my $key = $version.':'.&escape($symb).':'.$item;
3441: $newstorehash{$key} = $storehash->{$item};
3442: }
3443: my $items='';
3444: my %allitems = ();
3445: foreach my $item (keys(%newstorehash)) {
3446: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
3447: my $key = $1.':keys:'.$2;
3448: $allitems{$key} .= $3.':';
3449: }
3450: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
3451: }
3452: foreach my $item (keys(%allitems)) {
3453: $allitems{$item} =~ s/\:$//;
3454: $items.= $item.'='.$allitems{$item}.'&';
3455: }
3456: $items=~s/\&$//;
3457: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
3458: }
3459:
3460: # ------------------------------------------------------ critical put interface
3461:
3462: sub cput {
3463: my ($namespace,$storehash,$udomain,$uname)=@_;
3464: if (!$udomain) { $udomain=$env{'user.domain'}; }
3465: if (!$uname) { $uname=$env{'user.name'}; }
3466: my $uhome=&homeserver($uname,$udomain);
3467: my $items='';
3468: foreach my $item (keys(%$storehash)) {
3469: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
3470: }
3471: $items=~s/\&$//;
3472: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
3473: }
3474:
3475: # -------------------------------------------------------------- eget interface
3476:
3477: sub eget {
3478: my ($namespace,$storearr,$udomain,$uname)=@_;
3479: my $items='';
3480: foreach my $item (@$storearr) {
3481: $items.=&escape($item).'&';
3482: }
3483: $items=~s/\&$//;
3484: if (!$udomain) { $udomain=$env{'user.domain'}; }
3485: if (!$uname) { $uname=$env{'user.name'}; }
3486: my $uhome=&homeserver($uname,$udomain);
3487: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
3488: my @pairs=split(/\&/,$rep);
3489: my %returnhash=();
3490: my $i=0;
3491: foreach my $item (@$storearr) {
3492: $returnhash{$item}=&thaw_unescape($pairs[$i]);
3493: $i++;
3494: }
3495: return %returnhash;
3496: }
3497:
3498: # ------------------------------------------------------------ tmpput interface
3499: sub tmpput {
3500: my ($storehash,$server,$context)=@_;
3501: my $items='';
3502: foreach my $item (keys(%$storehash)) {
3503: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
3504: }
3505: $items=~s/\&$//;
3506: if (defined($context)) {
3507: $items .= ':'.&escape($context);
3508: }
3509: return &reply("tmpput:$items",$server);
3510: }
3511:
3512: # ------------------------------------------------------------ tmpget interface
3513: sub tmpget {
3514: my ($token,$server)=@_;
3515: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
3516: my $rep=&reply("tmpget:$token",$server);
3517: my %returnhash;
3518: foreach my $item (split(/\&/,$rep)) {
3519: my ($key,$value)=split(/=/,$item);
3520: $returnhash{&unescape($key)}=&thaw_unescape($value);
3521: }
3522: return %returnhash;
3523: }
3524:
3525: # ------------------------------------------------------------ tmpget interface
3526: sub tmpdel {
3527: my ($token,$server)=@_;
3528: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
3529: return &reply("tmpdel:$token",$server);
3530: }
3531:
3532: # -------------------------------------------------- portfolio access checking
3533:
3534: sub portfolio_access {
3535: my ($requrl) = @_;
3536: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
3537: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
3538: if ($result) {
3539: my %setters;
3540: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
3541: my ($startblock,$endblock) =
3542: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
3543: if ($startblock && $endblock) {
3544: return 'B';
3545: }
3546: } else {
3547: my ($startblock,$endblock) =
3548: &Apache::loncommon::blockcheck(\%setters,'port');
3549: if ($startblock && $endblock) {
3550: return 'B';
3551: }
3552: }
3553: }
3554: if ($result eq 'ok') {
3555: return 'F';
3556: } elsif ($result =~ /^[^:]+:guest_/) {
3557: return 'A';
3558: }
3559: return '';
3560: }
3561:
3562: sub get_portfolio_access {
3563: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
3564:
3565: if (!ref($access_hash)) {
3566: my $current_perms = &get_portfile_permissions($udom,$unum);
3567: my %access_controls = &get_access_controls($current_perms,$group,
3568: $file_name);
3569: $access_hash = $access_controls{$file_name};
3570: }
3571:
3572: my ($public,$guest,@domains,@users,@courses,@groups);
3573: my $now = time;
3574: if (ref($access_hash) eq 'HASH') {
3575: foreach my $key (keys(%{$access_hash})) {
3576: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
3577: if ($start > $now) {
3578: next;
3579: }
3580: if ($end && $end<$now) {
3581: next;
3582: }
3583: if ($scope eq 'public') {
3584: $public = $key;
3585: last;
3586: } elsif ($scope eq 'guest') {
3587: $guest = $key;
3588: } elsif ($scope eq 'domains') {
3589: push(@domains,$key);
3590: } elsif ($scope eq 'users') {
3591: push(@users,$key);
3592: } elsif ($scope eq 'course') {
3593: push(@courses,$key);
3594: } elsif ($scope eq 'group') {
3595: push(@groups,$key);
3596: }
3597: }
3598: if ($public) {
3599: return 'ok';
3600: }
3601: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
3602: if ($guest) {
3603: return $guest;
3604: }
3605: } else {
3606: if (@domains > 0) {
3607: foreach my $domkey (@domains) {
3608: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
3609: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
3610: return 'ok';
3611: }
3612: }
3613: }
3614: }
3615: if (@users > 0) {
3616: foreach my $userkey (@users) {
3617: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
3618: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
3619: if (ref($item) eq 'HASH') {
3620: if (($item->{'uname'} eq $env{'user.name'}) &&
3621: ($item->{'udom'} eq $env{'user.domain'})) {
3622: return 'ok';
3623: }
3624: }
3625: }
3626: }
3627: }
3628: }
3629: my %roleshash;
3630: my @courses_and_groups = @courses;
3631: push(@courses_and_groups,@groups);
3632: if (@courses_and_groups > 0) {
3633: my (%allgroups,%allroles);
3634: my ($start,$end,$role,$sec,$group);
3635: foreach my $envkey (%env) {
3636: if ($envkey =~ m-^user\.role\.(gr|cc|in|ta|ep|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
3637: my $cid = $2.'_'.$3;
3638: if ($1 eq 'gr') {
3639: $group = $4;
3640: $allgroups{$cid}{$group} = $env{$envkey};
3641: } else {
3642: if ($4 eq '') {
3643: $sec = 'none';
3644: } else {
3645: $sec = $4;
3646: }
3647: $allroles{$cid}{$1}{$sec} = $env{$envkey};
3648: }
3649: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
3650: my $cid = $2.'_'.$3;
3651: if ($4 eq '') {
3652: $sec = 'none';
3653: } else {
3654: $sec = $4;
3655: }
3656: $allroles{$cid}{$1}{$sec} = $env{$envkey};
3657: }
3658: }
3659: if (keys(%allroles) == 0) {
3660: return;
3661: }
3662: foreach my $key (@courses_and_groups) {
3663: my %content = %{$$access_hash{$key}};
3664: my $cnum = $content{'number'};
3665: my $cdom = $content{'domain'};
3666: my $cid = $cdom.'_'.$cnum;
3667: if (!exists($allroles{$cid})) {
3668: next;
3669: }
3670: foreach my $role_id (keys(%{$content{'roles'}})) {
3671: my @sections = @{$content{'roles'}{$role_id}{'section'}};
3672: my @groups = @{$content{'roles'}{$role_id}{'group'}};
3673: my @status = @{$content{'roles'}{$role_id}{'access'}};
3674: my @roles = @{$content{'roles'}{$role_id}{'role'}};
3675: foreach my $role (keys(%{$allroles{$cid}})) {
3676: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
3677: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
3678: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
3679: if (grep/^all$/,@sections) {
3680: return 'ok';
3681: } else {
3682: if (grep/^$sec$/,@sections) {
3683: return 'ok';
3684: }
3685: }
3686: }
3687: }
3688: if (keys(%{$allgroups{$cid}}) == 0) {
3689: if (grep/^none$/,@groups) {
3690: return 'ok';
3691: }
3692: } else {
3693: if (grep/^all$/,@groups) {
3694: return 'ok';
3695: }
3696: foreach my $group (keys(%{$allgroups{$cid}})) {
3697: if (grep/^$group$/,@groups) {
3698: return 'ok';
3699: }
3700: }
3701: }
3702: }
3703: }
3704: }
3705: }
3706: }
3707: if ($guest) {
3708: return $guest;
3709: }
3710: }
3711: }
3712: return;
3713: }
3714:
3715: sub course_group_datechecker {
3716: my ($dates,$now,$status) = @_;
3717: my ($start,$end) = split(/\./,$dates);
3718: if (!$start && !$end) {
3719: return 'ok';
3720: }
3721: if (grep/^active$/,@{$status}) {
3722: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
3723: return 'ok';
3724: }
3725: }
3726: if (grep/^previous$/,@{$status}) {
3727: if ($end > $now ) {
3728: return 'ok';
3729: }
3730: }
3731: if (grep/^future$/,@{$status}) {
3732: if ($start > $now) {
3733: return 'ok';
3734: }
3735: }
3736: return;
3737: }
3738:
3739: sub parse_portfolio_url {
3740: my ($url) = @_;
3741:
3742: my ($type,$udom,$unum,$group,$file_name);
3743:
3744: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
3745: $type = 1;
3746: $udom = $1;
3747: $unum = $2;
3748: $file_name = $3;
3749: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
3750: $type = 2;
3751: $udom = $1;
3752: $unum = $2;
3753: $group = $3;
3754: $file_name = $3.'/'.$4;
3755: }
3756: if (wantarray) {
3757: return ($type,$udom,$unum,$file_name,$group);
3758: }
3759: return $type;
3760: }
3761:
3762: sub is_portfolio_url {
3763: my ($url) = @_;
3764: return scalar(&parse_portfolio_url($url));
3765: }
3766:
3767: sub is_portfolio_file {
3768: my ($file) = @_;
3769: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
3770: return 1;
3771: }
3772: return;
3773: }
3774:
3775:
3776: # ---------------------------------------------- Custom access rule evaluation
3777:
3778: sub customaccess {
3779: my ($priv,$uri)=@_;
3780: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
3781: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
3782: $udom = &LONCAPA::clean_domain($udom);
3783: $ucrs = &LONCAPA::clean_username($ucrs);
3784: my $access=0;
3785: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
3786: my ($effect,$realm,$role)=split(/\:/,$right);
3787: if ($role) {
3788: if ($role ne $urole) { next; }
3789: }
3790: foreach my $scope (split(/\s*\,\s*/,$realm)) {
3791: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
3792: if ($tdom) {
3793: if ($tdom ne $udom) { next; }
3794: }
3795: if ($tcrs) {
3796: if ($tcrs ne $ucrs) { next; }
3797: }
3798: if ($tsec) {
3799: if ($tsec ne $usec) { next; }
3800: }
3801: $access=($effect eq 'allow');
3802: last;
3803: }
3804: if ($realm eq '' && $role eq '') {
3805: $access=($effect eq 'allow');
3806: }
3807: }
3808: return $access;
3809: }
3810:
3811: # ------------------------------------------------- Check for a user privilege
3812:
3813: sub allowed {
3814: my ($priv,$uri,$symb,$role)=@_;
3815: my $ver_orguri=$uri;
3816: $uri=&deversion($uri);
3817: my $orguri=$uri;
3818: $uri=&declutter($uri);
3819:
3820: if ($priv eq 'evb') {
3821: # Evade communication block restrictions for specified role in a course
3822: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
3823: return $1;
3824: } else {
3825: return;
3826: }
3827: }
3828:
3829: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
3830: # Free bre access to adm and meta resources
3831: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
3832: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
3833: && ($priv eq 'bre')) {
3834: return 'F';
3835: }
3836:
3837: # Free bre access to user's own portfolio contents
3838: my ($space,$domain,$name,@dir)=split('/',$uri);
3839: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
3840: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
3841: my %setters;
3842: my ($startblock,$endblock) =
3843: &Apache::loncommon::blockcheck(\%setters,'port');
3844: if ($startblock && $endblock) {
3845: return 'B';
3846: } else {
3847: return 'F';
3848: }
3849: }
3850:
3851: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
3852: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
3853: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
3854: if (exists($env{'request.course.id'})) {
3855: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
3856: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
3857: if (($domain eq $cdom) && ($name eq $cnum)) {
3858: my $courseprivid=$env{'request.course.id'};
3859: $courseprivid=~s/\_/\//;
3860: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
3861: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
3862: return $1;
3863: } else {
3864: if ($env{'request.course.sec'}) {
3865: $courseprivid.='/'.$env{'request.course.sec'};
3866: }
3867: if ($env{'user.priv.'.$env{'request.role'}.'./'.
3868: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
3869: return $2;
3870: }
3871: }
3872: }
3873: }
3874: }
3875:
3876: # Free bre to public access
3877:
3878: if ($priv eq 'bre') {
3879: my $copyright=&metadata($uri,'copyright');
3880: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
3881: return 'F';
3882: }
3883: if ($copyright eq 'priv') {
3884: $uri=~/([^\/]+)\/([^\/]+)\//;
3885: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
3886: return '';
3887: }
3888: }
3889: if ($copyright eq 'domain') {
3890: $uri=~/([^\/]+)\/([^\/]+)\//;
3891: unless (($env{'user.domain'} eq $1) ||
3892: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
3893: return '';
3894: }
3895: }
3896: if ($env{'request.role'}=~ /li\.\//) {
3897: # Library role, so allow browsing of resources in this domain.
3898: return 'F';
3899: }
3900: if ($copyright eq 'custom') {
3901: unless (&customaccess($priv,$uri)) { return ''; }
3902: }
3903: }
3904: # Domain coordinator is trying to create a course
3905: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
3906: # uri is the requested domain in this case.
3907: # comparison to 'request.role.domain' shows if the user has selected
3908: # a role of dc for the domain in question.
3909: return 'F' if ($uri eq $env{'request.role.domain'});
3910: }
3911:
3912: my $thisallowed='';
3913: my $statecond=0;
3914: my $courseprivid='';
3915:
3916: # Course
3917:
3918: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
3919: $thisallowed.=$1;
3920: }
3921:
3922: # Domain
3923:
3924: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
3925: =~/\Q$priv\E\&([^\:]*)/) {
3926: $thisallowed.=$1;
3927: }
3928:
3929: # Course: uri itself is a course
3930: my $courseuri=$uri;
3931: $courseuri=~s/\_(\d)/\/$1/;
3932: $courseuri=~s/^([^\/])/\/$1/;
3933:
3934: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
3935: =~/\Q$priv\E\&([^\:]*)/) {
3936: $thisallowed.=$1;
3937: }
3938:
3939: # URI is an uploaded document for this course, default permissions don't matter
3940: # not allowing 'edit' access (editupload) to uploaded course docs
3941: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
3942: $thisallowed='';
3943: my ($match)=&is_on_map($uri);
3944: if ($match) {
3945: if ($env{'user.priv.'.$env{'request.role'}.'./'}
3946: =~/\Q$priv\E\&([^\:]*)/) {
3947: $thisallowed.=$1;
3948: }
3949: } else {
3950: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
3951: if ($refuri) {
3952: if ($refuri =~ m|^/adm/|) {
3953: $thisallowed='F';
3954: } else {
3955: $refuri=&declutter($refuri);
3956: my ($match) = &is_on_map($refuri);
3957: if ($match) {
3958: $thisallowed='F';
3959: }
3960: }
3961: }
3962: }
3963: }
3964:
3965: if ($priv eq 'bre'
3966: && $thisallowed ne 'F'
3967: && $thisallowed ne '2'
3968: && &is_portfolio_url($uri)) {
3969: $thisallowed = &portfolio_access($uri);
3970: }
3971:
3972: # Full access at system, domain or course-wide level? Exit.
3973:
3974: if ($thisallowed=~/F/) {
3975: return 'F';
3976: }
3977:
3978: # If this is generating or modifying users, exit with special codes
3979:
3980: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
3981: if (($priv eq 'cca') || ($priv eq 'caa')) {
3982: my ($audom,$auname)=split('/',$uri);
3983: # no author name given, so this just checks on the general right to make a co-author in this domain
3984: unless ($auname) { return $thisallowed; }
3985: # an author name is given, so we are about to actually make a co-author for a certain account
3986: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
3987: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
3988: ($audom ne $env{'request.role.domain'}))) { return ''; }
3989: }
3990: return $thisallowed;
3991: }
3992: #
3993: # Gathered so far: system, domain and course wide privileges
3994: #
3995: # Course: See if uri or referer is an individual resource that is part of
3996: # the course
3997:
3998: if ($env{'request.course.id'}) {
3999:
4000: $courseprivid=$env{'request.course.id'};
4001: if ($env{'request.course.sec'}) {
4002: $courseprivid.='/'.$env{'request.course.sec'};
4003: }
4004: $courseprivid=~s/\_/\//;
4005: my $checkreferer=1;
4006: my ($match,$cond)=&is_on_map($uri);
4007: if ($match) {
4008: $statecond=$cond;
4009: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
4010: =~/\Q$priv\E\&([^\:]*)/) {
4011: $thisallowed.=$1;
4012: $checkreferer=0;
4013: }
4014: }
4015:
4016: if ($checkreferer) {
4017: my $refuri=$env{'httpref.'.$orguri};
4018: unless ($refuri) {
4019: foreach my $key (keys(%env)) {
4020: if ($key=~/^httpref\..*\*/) {
4021: my $pattern=$key;
4022: $pattern=~s/^httpref\.\/res\///;
4023: $pattern=~s/\*/\[\^\/\]\+/g;
4024: $pattern=~s/\//\\\//g;
4025: if ($orguri=~/$pattern/) {
4026: $refuri=$env{$key};
4027: }
4028: }
4029: }
4030: }
4031:
4032: if ($refuri) {
4033: $refuri=&declutter($refuri);
4034: my ($match,$cond)=&is_on_map($refuri);
4035: if ($match) {
4036: my $refstatecond=$cond;
4037: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
4038: =~/\Q$priv\E\&([^\:]*)/) {
4039: $thisallowed.=$1;
4040: $uri=$refuri;
4041: $statecond=$refstatecond;
4042: }
4043: }
4044: }
4045: }
4046: }
4047:
4048: #
4049: # Gathered now: all privileges that could apply, and condition number
4050: #
4051: #
4052: # Full or no access?
4053: #
4054:
4055: if ($thisallowed=~/F/) {
4056: return 'F';
4057: }
4058:
4059: unless ($thisallowed) {
4060: return '';
4061: }
4062:
4063: # Restrictions exist, deal with them
4064: #
4065: # C:according to course preferences
4066: # R:according to resource settings
4067: # L:unless locked
4068: # X:according to user session state
4069: #
4070:
4071: # Possibly locked functionality, check all courses
4072: # Locks might take effect only after 10 minutes cache expiration for other
4073: # courses, and 2 minutes for current course
4074:
4075: my $envkey;
4076: if ($thisallowed=~/L/) {
4077: foreach $envkey (keys %env) {
4078: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
4079: my $courseid=$2;
4080: my $roleid=$1.'.'.$2;
4081: $courseid=~s/^\///;
4082: my $expiretime=600;
4083: if ($env{'request.role'} eq $roleid) {
4084: $expiretime=120;
4085: }
4086: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
4087: my $prefix='course.'.$cdom.'_'.$cnum.'.';
4088: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
4089: &coursedescription($courseid,{'freshen_cache' => 1});
4090: }
4091: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
4092: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
4093: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
4094: &log($env{'user.domain'},$env{'user.name'},
4095: $env{'user.home'},
4096: 'Locked by res: '.$priv.' for '.$uri.' due to '.
4097: $cdom.'/'.$cnum.'/'.$csec.' expire '.
4098: $env{$prefix.'priv.'.$priv.'.lock.expire'});
4099: return '';
4100: }
4101: }
4102: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
4103: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
4104: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
4105: &log($env{'user.domain'},$env{'user.name'},
4106: $env{'user.home'},
4107: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
4108: $cdom.'/'.$cnum.'/'.$csec.' expire '.
4109: $env{$prefix.'priv.'.$priv.'.lock.expire'});
4110: return '';
4111: }
4112: }
4113: }
4114: }
4115: }
4116:
4117: #
4118: # Rest of the restrictions depend on selected course
4119: #
4120:
4121: unless ($env{'request.course.id'}) {
4122: if ($thisallowed eq 'A') {
4123: return 'A';
4124: } elsif ($thisallowed eq 'B') {
4125: return 'B';
4126: } else {
4127: return '1';
4128: }
4129: }
4130:
4131: #
4132: # Now user is definitely in a course
4133: #
4134:
4135:
4136: # Course preferences
4137:
4138: if ($thisallowed=~/C/) {
4139: my $rolecode=(split(/\./,$env{'request.role'}))[0];
4140: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
4141: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
4142: =~/\Q$rolecode\E/) {
4143: if ($priv ne 'pch') {
4144: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
4145: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
4146: $env{'request.course.id'});
4147: }
4148: return '';
4149: }
4150:
4151: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
4152: =~/\Q$unamedom\E/) {
4153: if ($priv ne 'pch') {
4154: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
4155: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
4156: $env{'request.course.id'});
4157: }
4158: return '';
4159: }
4160: }
4161:
4162: # Resource preferences
4163:
4164: if ($thisallowed=~/R/) {
4165: my $rolecode=(split(/\./,$env{'request.role'}))[0];
4166: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
4167: if ($priv ne 'pch') {
4168: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
4169: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
4170: }
4171: return '';
4172: }
4173: }
4174:
4175: # Restricted by state or randomout?
4176:
4177: if ($thisallowed=~/X/) {
4178: if ($env{'acc.randomout'}) {
4179: if (!$symb) { $symb=&symbread($uri,1); }
4180: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
4181: return '';
4182: }
4183: }
4184: if (&condval($statecond)) {
4185: return '2';
4186: } else {
4187: return '';
4188: }
4189: }
4190:
4191: if ($thisallowed eq 'A') {
4192: return 'A';
4193: } elsif ($thisallowed eq 'B') {
4194: return 'B';
4195: }
4196: return 'F';
4197: }
4198:
4199: sub split_uri_for_cond {
4200: my $uri=&deversion(&declutter(shift));
4201: my @uriparts=split(/\//,$uri);
4202: my $filename=pop(@uriparts);
4203: my $pathname=join('/',@uriparts);
4204: return ($pathname,$filename);
4205: }
4206: # --------------------------------------------------- Is a resource on the map?
4207:
4208: sub is_on_map {
4209: my ($pathname,$filename) = &split_uri_for_cond(shift);
4210: #Trying to find the conditional for the file
4211: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
4212: /\&\Q$filename\E\:([\d\|]+)\&/);
4213: if ($match) {
4214: return (1,$1);
4215: } else {
4216: return (0,0);
4217: }
4218: }
4219:
4220: # --------------------------------------------------------- Get symb from alias
4221:
4222: sub get_symb_from_alias {
4223: my $symb=shift;
4224: my ($map,$resid,$url)=&decode_symb($symb);
4225: # Already is a symb
4226: if ($url) { return $symb; }
4227: # Must be an alias
4228: my $aliassymb='';
4229: my %bighash;
4230: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
4231: &GDBM_READER(),0640)) {
4232: my $rid=$bighash{'mapalias_'.$symb};
4233: if ($rid) {
4234: my ($mapid,$resid)=split(/\./,$rid);
4235: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
4236: $resid,$bighash{'src_'.$rid});
4237: }
4238: untie %bighash;
4239: }
4240: return $aliassymb;
4241: }
4242:
4243: # ----------------------------------------------------------------- Define Role
4244:
4245: sub definerole {
4246: if (allowed('mcr','/')) {
4247: my ($rolename,$sysrole,$domrole,$courole)=@_;
4248: foreach my $role (split(':',$sysrole)) {
4249: my ($crole,$cqual)=split(/\&/,$role);
4250: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
4251: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
4252: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
4253: return "refused:s:$crole&$cqual";
4254: }
4255: }
4256: }
4257: foreach my $role (split(':',$domrole)) {
4258: my ($crole,$cqual)=split(/\&/,$role);
4259: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
4260: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
4261: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
4262: return "refused:d:$crole&$cqual";
4263: }
4264: }
4265: }
4266: foreach my $role (split(':',$courole)) {
4267: my ($crole,$cqual)=split(/\&/,$role);
4268: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
4269: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
4270: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
4271: return "refused:c:$crole&$cqual";
4272: }
4273: }
4274: }
4275: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
4276: "$env{'user.domain'}:$env{'user.name'}:".
4277: "rolesdef_$rolename=".
4278: escape($sysrole.'_'.$domrole.'_'.$courole);
4279: return reply($command,$env{'user.home'});
4280: } else {
4281: return 'refused';
4282: }
4283: }
4284:
4285: # ---------------- Make a metadata query against the network of library servers
4286:
4287: sub metadata_query {
4288: my ($query,$custom,$customshow,$server_array)=@_;
4289: my %rhash;
4290: my %libserv = &all_library();
4291: my @server_list = (defined($server_array) ? @$server_array
4292: : keys(%libserv) );
4293: for my $server (@server_list) {
4294: unless ($custom or $customshow) {
4295: my $reply=&reply("querysend:".&escape($query),$server);
4296: $rhash{$server}=$reply;
4297: }
4298: else {
4299: my $reply=&reply("querysend:".&escape($query).':'.
4300: &escape($custom).':'.&escape($customshow),
4301: $server);
4302: $rhash{$server}=$reply;
4303: }
4304: }
4305: return \%rhash;
4306: }
4307:
4308: # ----------------------------------------- Send log queries and wait for reply
4309:
4310: sub log_query {
4311: my ($uname,$udom,$query,%filters)=@_;
4312: my $uhome=&homeserver($uname,$udom);
4313: if ($uhome eq 'no_host') { return 'error: no_host'; }
4314: my $uhost=&hostname($uhome);
4315: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
4316: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
4317: $uhome);
4318: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
4319: return get_query_reply($queryid);
4320: }
4321:
4322: # -------------------------- Update MySQL table for portfolio file
4323:
4324: sub update_portfolio_table {
4325: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
4326: my $homeserver = &homeserver($uname,$udom);
4327: my $queryid=
4328: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
4329: ':'.&escape($file_name).':'.$action,$homeserver);
4330: my $reply = &get_query_reply($queryid);
4331: return $reply;
4332: }
4333:
4334: # ------- Request retrieval of institutional classlists for course(s)
4335:
4336: sub fetch_enrollment_query {
4337: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
4338: my $homeserver;
4339: my $maxtries = 1;
4340: if ($context eq 'automated') {
4341: $homeserver = $perlvar{'lonHostID'};
4342: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
4343: } else {
4344: $homeserver = &homeserver($cnum,$dom);
4345: }
4346: my $host=&hostname($homeserver);
4347: my $cmd = '';
4348: foreach my $affiliate (keys %{$affiliatesref}) {
4349: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
4350: }
4351: $cmd =~ s/%%$//;
4352: $cmd = &escape($cmd);
4353: my $query = 'fetchenrollment';
4354: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
4355: unless ($queryid=~/^\Q$host\E\_/) {
4356: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
4357: return 'error: '.$queryid;
4358: }
4359: my $reply = &get_query_reply($queryid);
4360: my $tries = 1;
4361: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
4362: $reply = &get_query_reply($queryid);
4363: $tries ++;
4364: }
4365: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
4366: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
4367: } else {
4368: my @responses = split/:/,$reply;
4369: if ($homeserver eq $perlvar{'lonHostID'}) {
4370: foreach my $line (@responses) {
4371: my ($key,$value) = split(/=/,$line,2);
4372: $$replyref{$key} = $value;
4373: }
4374: } else {
4375: my $pathname = $perlvar{'lonDaemons'}.'/tmp';
4376: foreach my $line (@responses) {
4377: my ($key,$value) = split(/=/,$line);
4378: $$replyref{$key} = $value;
4379: if ($value > 0) {
4380: foreach my $item (@{$$affiliatesref{$key}}) {
4381: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
4382: my $destname = $pathname.'/'.$filename;
4383: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
4384: if ($xml_classlist =~ /^error/) {
4385: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
4386: } else {
4387: if ( open(FILE,">$destname") ) {
4388: print FILE &unescape($xml_classlist);
4389: close(FILE);
4390: } else {
4391: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
4392: }
4393: }
4394: }
4395: }
4396: }
4397: }
4398: return 'ok';
4399: }
4400: return 'error';
4401: }
4402:
4403: sub get_query_reply {
4404: my $queryid=shift;
4405: my $replyfile=$perlvar{'lonDaemons'}.'/tmp/'.$queryid;
4406: my $reply='';
4407: for (1..100) {
4408: sleep 2;
4409: if (-e $replyfile.'.end') {
4410: if (open(my $fh,$replyfile)) {
4411: $reply.=<$fh>;
4412: close($fh);
4413: } else { return 'error: reply_file_error'; }
4414: return &unescape($reply);
4415: }
4416: }
4417: return 'timeout:'.$queryid;
4418: }
4419:
4420: sub courselog_query {
4421: #
4422: # possible filters:
4423: # url: url or symb
4424: # username
4425: # domain
4426: # action: view, submit, grade
4427: # start: timestamp
4428: # end: timestamp
4429: #
4430: my (%filters)=@_;
4431: unless ($env{'request.course.id'}) { return 'no_course'; }
4432: if ($filters{'url'}) {
4433: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
4434: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
4435: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
4436: }
4437: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
4438: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4439: return &log_query($cname,$cdom,'courselog',%filters);
4440: }
4441:
4442: sub userlog_query {
4443: #
4444: # possible filters:
4445: # action: log check role
4446: # start: timestamp
4447: # end: timestamp
4448: #
4449: my ($uname,$udom,%filters)=@_;
4450: return &log_query($uname,$udom,'userlog',%filters);
4451: }
4452:
4453: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
4454:
4455: sub auto_run {
4456: my ($cnum,$cdom) = @_;
4457: my $response = 0;
4458: my $settings;
4459: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
4460: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
4461: $settings = $domconfig{'autoenroll'};
4462: if ($settings->{'run'} eq '1') {
4463: $response = 1;
4464: }
4465: } else {
4466: my $homeserver = &homeserver($cnum,$cdom);
4467: $response = &reply('autorun:'.$cdom,$homeserver);
4468: }
4469: return $response;
4470: }
4471:
4472: sub auto_get_sections {
4473: my ($cnum,$cdom,$inst_coursecode) = @_;
4474: my $homeserver = &homeserver($cnum,$cdom);
4475: my @secs = ();
4476: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
4477: unless ($response eq 'refused') {
4478: @secs = split/:/,$response;
4479: }
4480: return @secs;
4481: }
4482:
4483: sub auto_new_course {
4484: my ($cnum,$cdom,$inst_course_id,$owner) = @_;
4485: my $homeserver = &homeserver($cnum,$cdom);
4486: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.$owner.':'.$cdom,$homeserver));
4487: return $response;
4488: }
4489:
4490: sub auto_validate_courseID {
4491: my ($cnum,$cdom,$inst_course_id) = @_;
4492: my $homeserver = &homeserver($cnum,$cdom);
4493: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
4494: return $response;
4495: }
4496:
4497: sub auto_create_password {
4498: my ($cnum,$cdom,$authparam,$udom) = @_;
4499: my ($homeserver,$response);
4500: my $create_passwd = 0;
4501: my $authchk = '';
4502: if ($udom =~ /^$match_domain$/) {
4503: $homeserver = &domain($udom,'primary');
4504: }
4505: if ($homeserver eq '') {
4506: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
4507: $homeserver = &homeserver($cnum,$cdom);
4508: }
4509: }
4510: if ($homeserver eq '') {
4511: $authchk = 'nodomain';
4512: } else {
4513: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
4514: if ($response eq 'refused') {
4515: $authchk = 'refused';
4516: } else {
4517: ($authparam,$create_passwd,$authchk) = split/:/,$response;
4518: }
4519: }
4520: return ($authparam,$create_passwd,$authchk);
4521: }
4522:
4523: sub auto_photo_permission {
4524: my ($cnum,$cdom,$students) = @_;
4525: my $homeserver = &homeserver($cnum,$cdom);
4526: my ($outcome,$perm_reqd,$conditions) =
4527: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
4528: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
4529: return (undef,undef);
4530: }
4531: return ($outcome,$perm_reqd,$conditions);
4532: }
4533:
4534: sub auto_checkphotos {
4535: my ($uname,$udom,$pid) = @_;
4536: my $homeserver = &homeserver($uname,$udom);
4537: my ($result,$resulttype);
4538: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
4539: &escape($uname).':'.&escape($pid),
4540: $homeserver));
4541: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
4542: return (undef,undef);
4543: }
4544: if ($outcome) {
4545: ($result,$resulttype) = split(/:/,$outcome);
4546: }
4547: return ($result,$resulttype);
4548: }
4549:
4550: sub auto_photochoice {
4551: my ($cnum,$cdom) = @_;
4552: my $homeserver = &homeserver($cnum,$cdom);
4553: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
4554: &escape($cdom),
4555: $homeserver)));
4556: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
4557: return (undef,undef);
4558: }
4559: return ($update,$comment);
4560: }
4561:
4562: sub auto_photoupdate {
4563: my ($affiliatesref,$dom,$cnum,$photo) = @_;
4564: my $homeserver = &homeserver($cnum,$dom);
4565: my $host=&hostname($homeserver);
4566: my $cmd = '';
4567: my $maxtries = 1;
4568: foreach my $affiliate (keys(%{$affiliatesref})) {
4569: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
4570: }
4571: $cmd =~ s/%%$//;
4572: $cmd = &escape($cmd);
4573: my $query = 'institutionalphotos';
4574: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
4575: unless ($queryid=~/^\Q$host\E\_/) {
4576: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
4577: return 'error: '.$queryid;
4578: }
4579: my $reply = &get_query_reply($queryid);
4580: my $tries = 1;
4581: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
4582: $reply = &get_query_reply($queryid);
4583: $tries ++;
4584: }
4585: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
4586: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
4587: } else {
4588: my @responses = split(/:/,$reply);
4589: my $outcome = shift(@responses);
4590: foreach my $item (@responses) {
4591: my ($key,$value) = split(/=/,$item);
4592: $$photo{$key} = $value;
4593: }
4594: return $outcome;
4595: }
4596: return 'error';
4597: }
4598:
4599: sub auto_instcode_format {
4600: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
4601: $cat_order) = @_;
4602: my $courses = '';
4603: my @homeservers;
4604: if ($caller eq 'global') {
4605: my %servers = &get_servers($codedom,'library');
4606: foreach my $tryserver (keys(%servers)) {
4607: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
4608: push(@homeservers,$tryserver);
4609: }
4610: }
4611: } else {
4612: push(@homeservers,&homeserver($caller,$codedom));
4613: }
4614: foreach my $code (keys(%{$instcodes})) {
4615: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
4616: }
4617: chop($courses);
4618: my $ok_response = 0;
4619: my $response;
4620: while (@homeservers > 0 && $ok_response == 0) {
4621: my $server = shift(@homeservers);
4622: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
4623: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
4624: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
4625: split/:/,$response;
4626: %{$codes} = (%{$codes},&str2hash($codes_str));
4627: push(@{$codetitles},&str2array($codetitles_str));
4628: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
4629: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
4630: $ok_response = 1;
4631: }
4632: }
4633: if ($ok_response) {
4634: return 'ok';
4635: } else {
4636: return $response;
4637: }
4638: }
4639:
4640: sub auto_instcode_defaults {
4641: my ($domain,$returnhash,$code_order) = @_;
4642: my @homeservers;
4643:
4644: my %servers = &get_servers($domain,'library');
4645: foreach my $tryserver (keys(%servers)) {
4646: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
4647: push(@homeservers,$tryserver);
4648: }
4649: }
4650:
4651: my $response;
4652: foreach my $server (@homeservers) {
4653: $response=&reply('autoinstcodedefaults:'.$domain,$server);
4654: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
4655:
4656: foreach my $pair (split(/\&/,$response)) {
4657: my ($name,$value)=split(/\=/,$pair);
4658: if ($name eq 'code_order') {
4659: @{$code_order} = split(/\&/,&unescape($value));
4660: } else {
4661: $returnhash->{&unescape($name)}=&unescape($value);
4662: }
4663: }
4664: return 'ok';
4665: }
4666:
4667: return $response;
4668: }
4669:
4670: sub auto_validate_class_sec {
4671: my ($cdom,$cnum,$owner,$inst_class) = @_;
4672: my $homeserver = &homeserver($cnum,$cdom);
4673: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
4674: &escape($owner).':'.$cdom,$homeserver);
4675: return $response;
4676: }
4677:
4678: # ------------------------------------------------------- Course Group routines
4679:
4680: sub get_coursegroups {
4681: my ($cdom,$cnum,$group,$namespace) = @_;
4682: return(&dump($namespace,$cdom,$cnum,$group));
4683: }
4684:
4685: sub modify_coursegroup {
4686: my ($cdom,$cnum,$groupsettings) = @_;
4687: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
4688: }
4689:
4690: sub toggle_coursegroup_status {
4691: my ($cdom,$cnum,$group,$action) = @_;
4692: my ($from_namespace,$to_namespace);
4693: if ($action eq 'delete') {
4694: $from_namespace = 'coursegroups';
4695: $to_namespace = 'deleted_groups';
4696: } else {
4697: $from_namespace = 'deleted_groups';
4698: $to_namespace = 'coursegroups';
4699: }
4700: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
4701: if (my $tmp = &error(%curr_group)) {
4702: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
4703: return ('read error',$tmp);
4704: } else {
4705: my %savedsettings = %curr_group;
4706: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
4707: my $deloutcome;
4708: if ($result eq 'ok') {
4709: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
4710: } else {
4711: return ('write error',$result);
4712: }
4713: if ($deloutcome eq 'ok') {
4714: return 'ok';
4715: } else {
4716: return ('delete error',$deloutcome);
4717: }
4718: }
4719: }
4720:
4721: sub modify_group_roles {
4722: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs) = @_;
4723: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
4724: my $role = 'gr/'.&escape($userprivs);
4725: my ($uname,$udom) = split(/:/,$user);
4726: my $result = &assignrole($udom,$uname,$url,$role,$end,$start);
4727: if ($result eq 'ok') {
4728: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
4729: }
4730: return $result;
4731: }
4732:
4733: sub modify_coursegroup_membership {
4734: my ($cdom,$cnum,$membership) = @_;
4735: my $result = &put('groupmembership',$membership,$cdom,$cnum);
4736: return $result;
4737: }
4738:
4739: sub get_active_groups {
4740: my ($udom,$uname,$cdom,$cnum) = @_;
4741: my $now = time;
4742: my %groups = ();
4743: foreach my $key (keys(%env)) {
4744: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
4745: my ($start,$end) = split(/\./,$env{$key});
4746: if (($end!=0) && ($end<$now)) { next; }
4747: if (($start!=0) && ($start>$now)) { next; }
4748: if ($1 eq $cdom && $2 eq $cnum) {
4749: $groups{$3} = $env{$key} ;
4750: }
4751: }
4752: }
4753: return %groups;
4754: }
4755:
4756: sub get_group_membership {
4757: my ($cdom,$cnum,$group) = @_;
4758: return(&dump('groupmembership',$cdom,$cnum,$group));
4759: }
4760:
4761: sub get_users_groups {
4762: my ($udom,$uname,$courseid) = @_;
4763: my @usersgroups;
4764: my $cachetime=1800;
4765:
4766: my $hashid="$udom:$uname:$courseid";
4767: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
4768: if (defined($cached)) {
4769: @usersgroups = split(/:/,$grouplist);
4770: } else {
4771: $grouplist = '';
4772: my $courseurl = &courseid_to_courseurl($courseid);
4773: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
4774: my $access_end = $env{'course.'.$courseid.
4775: '.default_enrollment_end_date'};
4776: my $now = time;
4777: foreach my $key (keys(%roleshash)) {
4778: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
4779: my $group = $1;
4780: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
4781: my $start = $2;
4782: my $end = $1;
4783: if ($start == -1) { next; } # deleted from group
4784: if (($start!=0) && ($start>$now)) { next; }
4785: if (($end!=0) && ($end<$now)) {
4786: if ($access_end && $access_end < $now) {
4787: if ($access_end - $end < 86400) {
4788: push(@usersgroups,$group);
4789: }
4790: }
4791: next;
4792: }
4793: push(@usersgroups,$group);
4794: }
4795: }
4796: }
4797: @usersgroups = &sort_course_groups($courseid,@usersgroups);
4798: $grouplist = join(':',@usersgroups);
4799: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
4800: }
4801: return @usersgroups;
4802: }
4803:
4804: sub devalidate_getgroups_cache {
4805: my ($udom,$uname,$cdom,$cnum)=@_;
4806: my $courseid = $cdom.'_'.$cnum;
4807:
4808: my $hashid="$udom:$uname:$courseid";
4809: &devalidate_cache_new('getgroups',$hashid);
4810: }
4811:
4812: # ------------------------------------------------------------------ Plain Text
4813:
4814: sub plaintext {
4815: my ($short,$type,$cid) = @_;
4816: if ($short =~ /^cr/) {
4817: return (split('/',$short))[-1];
4818: }
4819: if (!defined($cid)) {
4820: $cid = $env{'request.course.id'};
4821: }
4822: if (defined($cid) && defined($env{'course.'.$cid.'.'.$short.'.plaintext'})) {
4823: return &Apache::lonlocal::mt($env{'course.'.$cid.'.'.$short.
4824: '.plaintext'});
4825: }
4826: my %rolenames = (
4827: Course => 'std',
4828: Group => 'alt1',
4829: );
4830: if (defined($type) &&
4831: defined($rolenames{$type}) &&
4832: defined($prp{$short}{$rolenames{$type}})) {
4833: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
4834: } else {
4835: return &Apache::lonlocal::mt($prp{$short}{'std'});
4836: }
4837: }
4838:
4839: # ----------------------------------------------------------------- Assign Role
4840:
4841: sub assignrole {
4842: my ($udom,$uname,$url,$role,$end,$start,$deleteflag)=@_;
4843: my $mrole;
4844: if ($role =~ /^cr\//) {
4845: my $cwosec=$url;
4846: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
4847: unless (&allowed('ccr',$cwosec)) {
4848: &logthis('Refused custom assignrole: '.
4849: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
4850: $env{'user.name'}.' at '.$env{'user.domain'});
4851: return 'refused';
4852: }
4853: $mrole='cr';
4854: } elsif ($role =~ /^gr\//) {
4855: my $cwogrp=$url;
4856: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
4857: unless (&allowed('mdg',$cwogrp)) {
4858: &logthis('Refused group assignrole: '.
4859: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
4860: $env{'user.name'}.' at '.$env{'user.domain'});
4861: return 'refused';
4862: }
4863: $mrole='gr';
4864: } else {
4865: my $cwosec=$url;
4866: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
4867: unless ((&allowed('c'.$role,$cwosec)) || &allowed('c'.$role,$udom)) {
4868: &logthis('Refused assignrole: '.
4869: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
4870: $env{'user.name'}.' at '.$env{'user.domain'});
4871: return 'refused';
4872: }
4873: $mrole=$role;
4874: }
4875: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
4876: "$udom:$uname:$url".'_'."$mrole=$role";
4877: if ($end) { $command.='_'.$end; }
4878: if ($start) {
4879: if ($end) {
4880: $command.='_'.$start;
4881: } else {
4882: $command.='_0_'.$start;
4883: }
4884: }
4885: my $origstart = $start;
4886: my $origend = $end;
4887: # actually delete
4888: if ($deleteflag) {
4889: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
4890: # modify command to delete the role
4891: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
4892: "$udom:$uname:$url".'_'."$mrole";
4893: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
4894: # set start and finish to negative values for userrolelog
4895: $start=-1;
4896: $end=-1;
4897: }
4898: }
4899: # send command
4900: my $answer=&reply($command,&homeserver($uname,$udom));
4901: # log new user role if status is ok
4902: if ($answer eq 'ok') {
4903: &userrolelog($role,$uname,$udom,$url,$start,$end);
4904: # for course roles, perform group memberships changes triggered by role change.
4905: unless ($role =~ /^gr/) {
4906: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
4907: $origstart);
4908: }
4909: }
4910: return $answer;
4911: }
4912:
4913: # -------------------------------------------------- Modify user authentication
4914: # Overrides without validation
4915:
4916: sub modifyuserauth {
4917: my ($udom,$uname,$umode,$upass)=@_;
4918: my $uhome=&homeserver($uname,$udom);
4919: unless (&allowed('mau',$udom)) { return 'refused'; }
4920: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
4921: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
4922: ' in domain '.$env{'request.role.domain'});
4923: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
4924: &escape($upass),$uhome);
4925: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
4926: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
4927: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
4928: &log($udom,,$uname,$uhome,
4929: 'Authentication changed by '.$env{'user.domain'}.', '.
4930: $env{'user.name'}.', '.$umode.
4931: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
4932: unless ($reply eq 'ok') {
4933: &logthis('Authentication mode error: '.$reply);
4934: return 'error: '.$reply;
4935: }
4936: return 'ok';
4937: }
4938:
4939: # --------------------------------------------------------------- Modify a user
4940:
4941: sub modifyuser {
4942: my ($udom, $uname, $uid,
4943: $umode, $upass, $first,
4944: $middle, $last, $gene,
4945: $forceid, $desiredhome, $email)=@_;
4946: $udom= &LONCAPA::clean_domain($udom);
4947: $uname=&LONCAPA::clean_username($uname);
4948: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
4949: $umode.', '.$first.', '.$middle.', '.
4950: $last.', '.$gene.'(forceid: '.$forceid.')'.
4951: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
4952: ' desiredhome not specified').
4953: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
4954: ' in domain '.$env{'request.role.domain'});
4955: my $uhome=&homeserver($uname,$udom,'true');
4956: # ----------------------------------------------------------------- Create User
4957: if (($uhome eq 'no_host') &&
4958: (($umode && $upass) || ($umode eq 'localauth'))) {
4959: my $unhome='';
4960: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
4961: $unhome = $desiredhome;
4962: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
4963: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
4964: } else { # load balancing routine for determining $unhome
4965: my $loadm=10000000;
4966: my %servers = &get_servers($udom,'library');
4967: foreach my $tryserver (keys(%servers)) {
4968: my $answer=reply('load',$tryserver);
4969: if (($answer=~/\d+/) && ($answer<$loadm)) {
4970: $loadm=$answer;
4971: $unhome=$tryserver;
4972: }
4973: }
4974: }
4975: if (($unhome eq '') || ($unhome eq 'no_host')) {
4976: return 'error: unable to find a home server for '.$uname.
4977: ' in domain '.$udom;
4978: }
4979: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
4980: &escape($upass),$unhome);
4981: unless ($reply eq 'ok') {
4982: return 'error: '.$reply;
4983: }
4984: $uhome=&homeserver($uname,$udom,'true');
4985: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
4986: return 'error: unable verify users home machine.';
4987: }
4988: } # End of creation of new user
4989: # ---------------------------------------------------------------------- Add ID
4990: if ($uid) {
4991: $uid=~tr/A-Z/a-z/;
4992: my %uidhash=&idrget($udom,$uname);
4993: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
4994: && (!$forceid)) {
4995: unless ($uid eq $uidhash{$uname}) {
4996: return 'error: user id "'.$uid.'" does not match '.
4997: 'current user id "'.$uidhash{$uname}.'".';
4998: }
4999: } else {
5000: &idput($udom,($uname => $uid));
5001: }
5002: }
5003: # -------------------------------------------------------------- Add names, etc
5004: my @tmp=&get('environment',
5005: ['firstname','middlename','lastname','generation'],
5006: $udom,$uname);
5007: my %names;
5008: if ($tmp[0] =~ m/^error:.*/) {
5009: %names=();
5010: } else {
5011: %names = @tmp;
5012: }
5013: #
5014: # Make sure to not trash student environment if instructor does not bother
5015: # to supply name and email information
5016: #
5017: if ($first) { $names{'firstname'} = $first; }
5018: if (defined($middle)) { $names{'middlename'} = $middle; }
5019: if ($last) { $names{'lastname'} = $last; }
5020: if (defined($gene)) { $names{'generation'} = $gene; }
5021: if ($email) {
5022: $email=~s/[^\w\@\.\-\,]//gs;
5023: if ($email=~/\@/) { $names{'notification'} = $email;
5024: $names{'critnotification'} = $email;
5025: $names{'permanentemail'} = $email; }
5026: }
5027: my $reply = &put('environment', \%names, $udom,$uname);
5028: if ($reply ne 'ok') { return 'error: '.$reply; }
5029: &devalidate_cache_new('namescache',$uname.':'.$udom);
5030: &logthis('Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
5031: $umode.', '.$first.', '.$middle.', '.
5032: $last.', '.$gene.' by '.
5033: $env{'user.name'}.' at '.$env{'user.domain'});
5034: return 'ok';
5035: }
5036:
5037: # -------------------------------------------------------------- Modify student
5038:
5039: sub modifystudent {
5040: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
5041: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid)=@_;
5042: if (!$cid) {
5043: unless ($cid=$env{'request.course.id'}) {
5044: return 'not_in_class';
5045: }
5046: }
5047: # --------------------------------------------------------------- Make the user
5048: my $reply=&modifyuser
5049: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
5050: $desiredhome,$email);
5051: unless ($reply eq 'ok') { return $reply; }
5052: # This will cause &modify_student_enrollment to get the uid from the
5053: # students environment
5054: $uid = undef if (!$forceid);
5055: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
5056: $gene,$usec,$end,$start,$type,$locktype,$cid);
5057: return $reply;
5058: }
5059:
5060: sub modify_student_enrollment {
5061: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid) = @_;
5062: my ($cdom,$cnum,$chome);
5063: if (!$cid) {
5064: unless ($cid=$env{'request.course.id'}) {
5065: return 'not_in_class';
5066: }
5067: $cdom=$env{'course.'.$cid.'.domain'};
5068: $cnum=$env{'course.'.$cid.'.num'};
5069: } else {
5070: ($cdom,$cnum)=split(/_/,$cid);
5071: }
5072: $chome=$env{'course.'.$cid.'.home'};
5073: if (!$chome) {
5074: $chome=&homeserver($cnum,$cdom);
5075: }
5076: if (!$chome) { return 'unknown_course'; }
5077: # Make sure the user exists
5078: my $uhome=&homeserver($uname,$udom);
5079: if (($uhome eq '') || ($uhome eq 'no_host')) {
5080: return 'error: no such user';
5081: }
5082: # Get student data if we were not given enough information
5083: if (!defined($first) || $first eq '' ||
5084: !defined($last) || $last eq '' ||
5085: !defined($uid) || $uid eq '' ||
5086: !defined($middle) || $middle eq '' ||
5087: !defined($gene) || $gene eq '') {
5088: # They did not supply us with enough data to enroll the student, so
5089: # we need to pick up more information.
5090: my %tmp = &get('environment',
5091: ['firstname','middlename','lastname', 'generation','id']
5092: ,$udom,$uname);
5093:
5094: #foreach my $key (keys(%tmp)) {
5095: # &logthis("key $key = ".$tmp{$key});
5096: #}
5097: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
5098: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
5099: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
5100: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
5101: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
5102: }
5103: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
5104: my $reply=cput('classlist',
5105: {"$uname:$udom" =>
5106: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
5107: $cdom,$cnum);
5108: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
5109: return 'error: '.$reply;
5110: } else {
5111: &devalidate_getsection_cache($udom,$uname,$cid);
5112: }
5113: # Add student role to user
5114: my $uurl='/'.$cid;
5115: $uurl=~s/\_/\//g;
5116: if ($usec) {
5117: $uurl.='/'.$usec;
5118: }
5119: return &assignrole($udom,$uname,$uurl,'st',$end,$start);
5120: }
5121:
5122: sub format_name {
5123: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
5124: my $name;
5125: if ($first ne 'lastname') {
5126: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
5127: } else {
5128: if ($lastname=~/\S/) {
5129: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
5130: $name=~s/\s+,/,/;
5131: } else {
5132: $name.= $firstname.' '.$middlename.' '.$generation;
5133: }
5134: }
5135: $name=~s/^\s+//;
5136: $name=~s/\s+$//;
5137: $name=~s/\s+/ /g;
5138: return $name;
5139: }
5140:
5141: # ------------------------------------------------- Write to course preferences
5142:
5143: sub writecoursepref {
5144: my ($courseid,%prefs)=@_;
5145: $courseid=~s/^\///;
5146: $courseid=~s/\_/\//g;
5147: my ($cdomain,$cnum)=split(/\//,$courseid);
5148: my $chome=homeserver($cnum,$cdomain);
5149: if (($chome eq '') || ($chome eq 'no_host')) {
5150: return 'error: no such course';
5151: }
5152: my $cstring='';
5153: foreach my $pref (keys(%prefs)) {
5154: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
5155: }
5156: $cstring=~s/\&$//;
5157: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
5158: }
5159:
5160: # ---------------------------------------------------------- Make/modify course
5161:
5162: sub createcourse {
5163: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
5164: $course_owner,$crstype)=@_;
5165: $url=&declutter($url);
5166: my $cid='';
5167: unless (&allowed('ccc',$udom)) {
5168: return 'refused';
5169: }
5170: # ------------------------------------------------------------------- Create ID
5171: my $uname=int(1+rand(9)).
5172: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
5173: substr($$.time,0,5).unpack("H8",pack("I32",time)).
5174: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
5175: # ----------------------------------------------- Make sure that does not exist
5176: my $uhome=&homeserver($uname,$udom,'true');
5177: unless (($uhome eq '') || ($uhome eq 'no_host')) {
5178: $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
5179: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
5180: $uhome=&homeserver($uname,$udom,'true');
5181: unless (($uhome eq '') || ($uhome eq 'no_host')) {
5182: return 'error: unable to generate unique course-ID';
5183: }
5184: }
5185: # ------------------------------------------------ Check supplied server name
5186: $course_server = $env{'user.homeserver'} if (! defined($course_server));
5187: if (! &is_library($course_server)) {
5188: return 'error:bad server name '.$course_server;
5189: }
5190: # ------------------------------------------------------------- Make the course
5191: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
5192: $course_server);
5193: unless ($reply eq 'ok') { return 'error: '.$reply; }
5194: $uhome=&homeserver($uname,$udom,'true');
5195: if (($uhome eq '') || ($uhome eq 'no_host')) {
5196: return 'error: no such course';
5197: }
5198: # ----------------------------------------------------------------- Course made
5199: # log existence
5200: &courseidput($udom,&escape($udom.'_'.$uname).'='.&escape($description).
5201: ':'.&escape($inst_code).':'.&escape($course_owner).':'.
5202: &escape($crstype),$uhome);
5203: &flushcourselogs();
5204: # set toplevel url
5205: my $topurl=$url;
5206: unless ($nonstandard) {
5207: # ------------------------------------------ For standard courses, make top url
5208: my $mapurl=&clutter($url);
5209: if ($mapurl eq '/res/') { $mapurl=''; }
5210: $env{'form.initmap'}=(<<ENDINITMAP);
5211: <map>
5212: <resource id="1" type="start"></resource>
5213: <resource id="2" src="$mapurl"></resource>
5214: <resource id="3" type="finish"></resource>
5215: <link index="1" from="1" to="2"></link>
5216: <link index="2" from="2" to="3"></link>
5217: </map>
5218: ENDINITMAP
5219: $topurl=&declutter(
5220: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
5221: );
5222: }
5223: # ----------------------------------------------------------- Write preferences
5224: &writecoursepref($udom.'_'.$uname,
5225: ('description' => $description,
5226: 'url' => $topurl));
5227: return '/'.$udom.'/'.$uname;
5228: }
5229:
5230: sub is_course {
5231: my ($cdom,$cnum) = @_;
5232: my %courses = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,
5233: undef,'.');
5234: if (exists($courses{$cdom.'_'.$cnum})) {
5235: return 1;
5236: }
5237: return 0;
5238: }
5239:
5240: # ---------------------------------------------------------- Assign Custom Role
5241:
5242: sub assigncustomrole {
5243: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag)=@_;
5244: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
5245: $end,$start,$deleteflag);
5246: }
5247:
5248: # ----------------------------------------------------------------- Revoke Role
5249:
5250: sub revokerole {
5251: my ($udom,$uname,$url,$role,$deleteflag)=@_;
5252: my $now=time;
5253: return &assignrole($udom,$uname,$url,$role,$now,$deleteflag);
5254: }
5255:
5256: # ---------------------------------------------------------- Revoke Custom Role
5257:
5258: sub revokecustomrole {
5259: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag)=@_;
5260: my $now=time;
5261: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
5262: $deleteflag);
5263: }
5264:
5265: # ------------------------------------------------------------ Disk usage
5266: sub diskusage {
5267: my ($udom,$uname,$directoryRoot)=@_;
5268: $directoryRoot =~ s/\/$//;
5269: my $listing=&reply('du:'.$directoryRoot,homeserver($uname,$udom));
5270: return $listing;
5271: }
5272:
5273: sub is_locked {
5274: my ($file_name, $domain, $user) = @_;
5275: my @check;
5276: my $is_locked;
5277: push @check, $file_name;
5278: my %locked = &get('file_permissions',\@check,
5279: $env{'user.domain'},$env{'user.name'});
5280: my ($tmp)=keys(%locked);
5281: if ($tmp=~/^error:/) { undef(%locked); }
5282:
5283: if (ref($locked{$file_name}) eq 'ARRAY') {
5284: $is_locked = 'false';
5285: foreach my $entry (@{$locked{$file_name}}) {
5286: if (ref($entry) eq 'ARRAY') {
5287: $is_locked = 'true';
5288: last;
5289: }
5290: }
5291: } else {
5292: $is_locked = 'false';
5293: }
5294: }
5295:
5296: sub declutter_portfile {
5297: my ($file) = @_;
5298: $file =~ s{^(/portfolio/|portfolio/)}{/};
5299: return $file;
5300: }
5301:
5302: # ------------------------------------------------------------- Mark as Read Only
5303:
5304: sub mark_as_readonly {
5305: my ($domain,$user,$files,$what) = @_;
5306: my %current_permissions = &dump('file_permissions',$domain,$user);
5307: my ($tmp)=keys(%current_permissions);
5308: if ($tmp=~/^error:/) { undef(%current_permissions); }
5309: foreach my $file (@{$files}) {
5310: $file = &declutter_portfile($file);
5311: push(@{$current_permissions{$file}},$what);
5312: }
5313: &put('file_permissions',\%current_permissions,$domain,$user);
5314: return;
5315: }
5316:
5317: # ------------------------------------------------------------Save Selected Files
5318:
5319: sub save_selected_files {
5320: my ($user, $path, @files) = @_;
5321: my $filename = $user."savedfiles";
5322: my @other_files = &files_not_in_path($user, $path);
5323: open (OUT, '>'.$tmpdir.$filename);
5324: foreach my $file (@files) {
5325: print (OUT $env{'form.currentpath'}.$file."\n");
5326: }
5327: foreach my $file (@other_files) {
5328: print (OUT $file."\n");
5329: }
5330: close (OUT);
5331: return 'ok';
5332: }
5333:
5334: sub clear_selected_files {
5335: my ($user) = @_;
5336: my $filename = $user."savedfiles";
5337: open (OUT, '>'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
5338: print (OUT undef);
5339: close (OUT);
5340: return ("ok");
5341: }
5342:
5343: sub files_in_path {
5344: my ($user, $path) = @_;
5345: my $filename = $user."savedfiles";
5346: my %return_files;
5347: open (IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
5348: while (my $line_in = <IN>) {
5349: chomp ($line_in);
5350: my @paths_and_file = split (m!/!, $line_in);
5351: my $file_part = pop (@paths_and_file);
5352: my $path_part = join ('/', @paths_and_file);
5353: $path_part.='/';
5354: my $path_and_file = $path_part.$file_part;
5355: if ($path_part eq $path) {
5356: $return_files{$file_part}= 'selected';
5357: }
5358: }
5359: close (IN);
5360: return (\%return_files);
5361: }
5362:
5363: # called in portfolio select mode, to show files selected NOT in current directory
5364: sub files_not_in_path {
5365: my ($user, $path) = @_;
5366: my $filename = $user."savedfiles";
5367: my @return_files;
5368: my $path_part;
5369: open(IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
5370: while (my $line = <IN>) {
5371: #ok, I know it's clunky, but I want it to work
5372: my @paths_and_file = split(m|/|, $line);
5373: my $file_part = pop(@paths_and_file);
5374: chomp($file_part);
5375: my $path_part = join('/', @paths_and_file);
5376: $path_part .= '/';
5377: my $path_and_file = $path_part.$file_part;
5378: if ($path_part ne $path) {
5379: push(@return_files, ($path_and_file));
5380: }
5381: }
5382: close(OUT);
5383: return (@return_files);
5384: }
5385:
5386: #----------------------------------------------Get portfolio file permissions
5387:
5388: sub get_portfile_permissions {
5389: my ($domain,$user) = @_;
5390: my %current_permissions = &dump('file_permissions',$domain,$user);
5391: my ($tmp)=keys(%current_permissions);
5392: if ($tmp=~/^error:/) { undef(%current_permissions); }
5393: return \%current_permissions;
5394: }
5395:
5396: #---------------------------------------------Get portfolio file access controls
5397:
5398: sub get_access_controls {
5399: my ($current_permissions,$group,$file) = @_;
5400: my %access;
5401: my $real_file = $file;
5402: $file =~ s/\.meta$//;
5403: if (defined($file)) {
5404: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
5405: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
5406: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
5407: }
5408: }
5409: } else {
5410: foreach my $key (keys(%{$current_permissions})) {
5411: if ($key =~ /\0accesscontrol$/) {
5412: if (defined($group)) {
5413: if ($key !~ m-^\Q$group\E/-) {
5414: next;
5415: }
5416: }
5417: my ($fullpath) = split(/\0/,$key);
5418: if (ref($$current_permissions{$key}) eq 'HASH') {
5419: foreach my $control (keys(%{$$current_permissions{$key}})) {
5420: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
5421: }
5422: }
5423: }
5424: }
5425: }
5426: return %access;
5427: }
5428:
5429: sub modify_access_controls {
5430: my ($file_name,$changes,$domain,$user)=@_;
5431: my ($outcome,$deloutcome);
5432: my %store_permissions;
5433: my %new_values;
5434: my %new_control;
5435: my %translation;
5436: my @deletions = ();
5437: my $now = time;
5438: if (exists($$changes{'activate'})) {
5439: if (ref($$changes{'activate'}) eq 'HASH') {
5440: my @newitems = sort(keys(%{$$changes{'activate'}}));
5441: my $numnew = scalar(@newitems);
5442: for (my $i=0; $i<$numnew; $i++) {
5443: my $newkey = $newitems[$i];
5444: my $newid = &Apache::loncommon::get_cgi_id();
5445: if ($newkey =~ /^\d+:/) {
5446: $newkey =~ s/^(\d+)/$newid/;
5447: $translation{$1} = $newid;
5448: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
5449: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
5450: $translation{$1} = $newid;
5451: }
5452: $new_values{$file_name."\0".$newkey} =
5453: $$changes{'activate'}{$newitems[$i]};
5454: $new_control{$newkey} = $now;
5455: }
5456: }
5457: }
5458: my %todelete;
5459: my %changed_items;
5460: foreach my $action ('delete','update') {
5461: if (exists($$changes{$action})) {
5462: if (ref($$changes{$action}) eq 'HASH') {
5463: foreach my $key (keys(%{$$changes{$action}})) {
5464: my ($itemnum) = ($key =~ /^([^:]+):/);
5465: if ($action eq 'delete') {
5466: $todelete{$itemnum} = 1;
5467: } else {
5468: $changed_items{$itemnum} = $key;
5469: }
5470: }
5471: }
5472: }
5473: }
5474: # get lock on access controls for file.
5475: my $lockhash = {
5476: $file_name."\0".'locked_access_records' => $env{'user.name'}.
5477: ':'.$env{'user.domain'},
5478: };
5479: my $tries = 0;
5480: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
5481:
5482: while (($gotlock ne 'ok') && $tries <3) {
5483: $tries ++;
5484: sleep 1;
5485: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
5486: }
5487: if ($gotlock eq 'ok') {
5488: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
5489: my ($tmp)=keys(%curr_permissions);
5490: if ($tmp=~/^error:/) { undef(%curr_permissions); }
5491: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
5492: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
5493: if (ref($curr_controls) eq 'HASH') {
5494: foreach my $control_item (keys(%{$curr_controls})) {
5495: my ($itemnum) = ($control_item =~ /^([^:]+):/);
5496: if (defined($todelete{$itemnum})) {
5497: push(@deletions,$file_name."\0".$control_item);
5498: } else {
5499: if (defined($changed_items{$itemnum})) {
5500: $new_control{$changed_items{$itemnum}} = $now;
5501: push(@deletions,$file_name."\0".$control_item);
5502: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
5503: } else {
5504: $new_control{$control_item} = $$curr_controls{$control_item};
5505: }
5506: }
5507: }
5508: }
5509: }
5510: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
5511: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
5512: $outcome = &put('file_permissions',\%new_values,$domain,$user);
5513: # remove lock
5514: my @del_lock = ($file_name."\0".'locked_access_records');
5515: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
5516: my ($file,$group);
5517: if (&is_course($domain,$user)) {
5518: ($group,$file) = split(/\//,$file_name,2);
5519: } else {
5520: $file = $file_name;
5521: }
5522: my $sqlresult =
5523: &update_portfolio_table($user,$domain,$file,'portfolio_access',
5524: $group);
5525: } else {
5526: $outcome = "error: could not obtain lockfile\n";
5527: }
5528: return ($outcome,$deloutcome,\%new_values,\%translation);
5529: }
5530:
5531: sub make_public_indefinitely {
5532: my ($requrl) = @_;
5533: my $now = time;
5534: my $action = 'activate';
5535: my $aclnum = 0;
5536: if (&is_portfolio_url($requrl)) {
5537: my (undef,$udom,$unum,$file_name,$group) =
5538: &parse_portfolio_url($requrl);
5539: my $current_perms = &get_portfile_permissions($udom,$unum);
5540: my %access_controls = &get_access_controls($current_perms,
5541: $group,$file_name);
5542: foreach my $key (keys(%{$access_controls{$file_name}})) {
5543: my ($num,$scope,$end,$start) =
5544: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
5545: if ($scope eq 'public') {
5546: if ($start <= $now && $end == 0) {
5547: $action = 'none';
5548: } else {
5549: $action = 'update';
5550: $aclnum = $num;
5551: }
5552: last;
5553: }
5554: }
5555: if ($action eq 'none') {
5556: return 'ok';
5557: } else {
5558: my %changes;
5559: my $newend = 0;
5560: my $newstart = $now;
5561: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
5562: $changes{$action}{$newkey} = {
5563: type => 'public',
5564: time => {
5565: start => $newstart,
5566: end => $newend,
5567: },
5568: };
5569: my ($outcome,$deloutcome,$new_values,$translation) =
5570: &modify_access_controls($file_name,\%changes,$udom,$unum);
5571: return $outcome;
5572: }
5573: } else {
5574: return 'invalid';
5575: }
5576: }
5577:
5578: #------------------------------------------------------Get Marked as Read Only
5579:
5580: sub get_marked_as_readonly {
5581: my ($domain,$user,$what,$group) = @_;
5582: my $current_permissions = &get_portfile_permissions($domain,$user);
5583: my @readonly_files;
5584: my $cmp1=$what;
5585: if (ref($what)) { $cmp1=join('',@{$what}) };
5586: while (my ($file_name,$value) = each(%{$current_permissions})) {
5587: if (defined($group)) {
5588: if ($file_name !~ m-^\Q$group\E/-) {
5589: next;
5590: }
5591: }
5592: if (ref($value) eq "ARRAY"){
5593: foreach my $stored_what (@{$value}) {
5594: my $cmp2=$stored_what;
5595: if (ref($stored_what) eq 'ARRAY') {
5596: $cmp2=join('',@{$stored_what});
5597: }
5598: if ($cmp1 eq $cmp2) {
5599: push(@readonly_files, $file_name);
5600: last;
5601: } elsif (!defined($what)) {
5602: push(@readonly_files, $file_name);
5603: last;
5604: }
5605: }
5606: }
5607: }
5608: return @readonly_files;
5609: }
5610: #-----------------------------------------------------------Get Marked as Read Only Hash
5611:
5612: sub get_marked_as_readonly_hash {
5613: my ($current_permissions,$group,$what) = @_;
5614: my %readonly_files;
5615: while (my ($file_name,$value) = each(%{$current_permissions})) {
5616: if (defined($group)) {
5617: if ($file_name !~ m-^\Q$group\E/-) {
5618: next;
5619: }
5620: }
5621: if (ref($value) eq "ARRAY"){
5622: foreach my $stored_what (@{$value}) {
5623: if (ref($stored_what) eq 'ARRAY') {
5624: foreach my $lock_descriptor(@{$stored_what}) {
5625: if ($lock_descriptor eq 'graded') {
5626: $readonly_files{$file_name} = 'graded';
5627: } elsif ($lock_descriptor eq 'handback') {
5628: $readonly_files{$file_name} = 'handback';
5629: } else {
5630: if (!exists($readonly_files{$file_name})) {
5631: $readonly_files{$file_name} = 'locked';
5632: }
5633: }
5634: }
5635: }
5636: }
5637: }
5638: }
5639: return %readonly_files;
5640: }
5641: # ------------------------------------------------------------ Unmark as Read Only
5642:
5643: sub unmark_as_readonly {
5644: # unmarks $file_name (if $file_name is defined), or all files locked by $what
5645: # for portfolio submissions, $what contains [$symb,$crsid]
5646: my ($domain,$user,$what,$file_name,$group) = @_;
5647: $file_name = &declutter_portfile($file_name);
5648: my $symb_crs = $what;
5649: if (ref($what)) { $symb_crs=join('',@$what); }
5650: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
5651: my ($tmp)=keys(%current_permissions);
5652: if ($tmp=~/^error:/) { undef(%current_permissions); }
5653: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
5654: foreach my $file (@readonly_files) {
5655: my $clean_file = &declutter_portfile($file);
5656: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
5657: my $current_locks = $current_permissions{$file};
5658: my @new_locks;
5659: my @del_keys;
5660: if (ref($current_locks) eq "ARRAY"){
5661: foreach my $locker (@{$current_locks}) {
5662: my $compare=$locker;
5663: if (ref($locker) eq 'ARRAY') {
5664: $compare=join('',@{$locker});
5665: if ($compare ne $symb_crs) {
5666: push(@new_locks, $locker);
5667: }
5668: }
5669: }
5670: if (scalar(@new_locks) > 0) {
5671: $current_permissions{$file} = \@new_locks;
5672: } else {
5673: push(@del_keys, $file);
5674: &del('file_permissions',\@del_keys, $domain, $user);
5675: delete($current_permissions{$file});
5676: }
5677: }
5678: }
5679: &put('file_permissions',\%current_permissions,$domain,$user);
5680: return;
5681: }
5682:
5683: # ------------------------------------------------------------ Directory lister
5684:
5685: sub dirlist {
5686: my ($uri,$userdomain,$username,$alternateDirectoryRoot)=@_;
5687:
5688: $uri=~s/^\///;
5689: $uri=~s/\/$//;
5690: my ($udom, $uname);
5691: (undef,$udom,$uname)=split(/\//,$uri);
5692: if(defined($userdomain)) {
5693: $udom = $userdomain;
5694: }
5695: if(defined($username)) {
5696: $uname = $username;
5697: }
5698:
5699: my $dirRoot = $perlvar{'lonDocRoot'};
5700: if(defined($alternateDirectoryRoot)) {
5701: $dirRoot = $alternateDirectoryRoot;
5702: $dirRoot =~ s/\/$//;
5703: }
5704:
5705: if($udom) {
5706: if($uname) {
5707: my $listing = &reply('ls2:'.$dirRoot.'/'.$uri,
5708: &homeserver($uname,$udom));
5709: my @listing_results;
5710: if ($listing eq 'unknown_cmd') {
5711: $listing = &reply('ls:'.$dirRoot.'/'.$uri,
5712: &homeserver($uname,$udom));
5713: @listing_results = split(/:/,$listing);
5714: } else {
5715: @listing_results = map { &unescape($_); } split(/:/,$listing);
5716: }
5717: return @listing_results;
5718: } elsif(!defined($alternateDirectoryRoot)) {
5719: my %allusers;
5720: my %servers = &get_servers($udom,'library');
5721: foreach my $tryserver (keys(%servers)) {
5722: my $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
5723: $udom, $tryserver);
5724: my @listing_results;
5725: if ($listing eq 'unknown_cmd') {
5726: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
5727: $udom, $tryserver);
5728: @listing_results = split(/:/,$listing);
5729: } else {
5730: @listing_results =
5731: map { &unescape($_); } split(/:/,$listing);
5732: }
5733: if ($listing_results[0] ne 'no_such_dir' &&
5734: $listing_results[0] ne 'empty' &&
5735: $listing_results[0] ne 'con_lost') {
5736: foreach my $line (@listing_results) {
5737: my ($entry) = split(/&/,$line,2);
5738: $allusers{$entry} = 1;
5739: }
5740: }
5741: }
5742: my $alluserstr='';
5743: foreach my $user (sort(keys(%allusers))) {
5744: $alluserstr.=$user.'&user:';
5745: }
5746: $alluserstr=~s/:$//;
5747: return split(/:/,$alluserstr);
5748: } else {
5749: return ('missing user name');
5750: }
5751: } elsif(!defined($alternateDirectoryRoot)) {
5752: my @all_domains = sort(&all_domains());
5753: foreach my $domain (@all_domains) {
5754: $domain = $perlvar{'lonDocRoot'}.'/res/'.$domain.'/&domain';
5755: }
5756: return @all_domains;
5757: } else {
5758: return ('missing domain');
5759: }
5760: }
5761:
5762: # --------------------------------------------- GetFileTimestamp
5763: # This function utilizes dirlist and returns the date stamp for
5764: # when it was last modified. It will also return an error of -1
5765: # if an error occurs
5766:
5767: ##
5768: ## FIXME: This subroutine assumes its caller knows something about the
5769: ## directory structure of the home server for the student ($root).
5770: ## Not a good assumption to make. Since this is for looking up files
5771: ## in user directories, the full path should be constructed by lond, not
5772: ## whatever machine we request data from.
5773: ##
5774: sub GetFileTimestamp {
5775: my ($studentDomain,$studentName,$filename,$root)=@_;
5776: $studentDomain = &LONCAPA::clean_domain($studentDomain);
5777: $studentName = &LONCAPA::clean_username($studentName);
5778: my $subdir=$studentName.'__';
5779: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
5780: my $proname="$studentDomain/$subdir/$studentName";
5781: $proname .= '/'.$filename;
5782: my ($fileStat) = &Apache::lonnet::dirlist($proname, $studentDomain,
5783: $studentName, $root);
5784: my @stats = split('&', $fileStat);
5785: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
5786: # @stats contains first the filename, then the stat output
5787: return $stats[10]; # so this is 10 instead of 9.
5788: } else {
5789: return -1;
5790: }
5791: }
5792:
5793: sub stat_file {
5794: my ($uri) = @_;
5795: $uri = &clutter_with_no_wrapper($uri);
5796:
5797: my ($udom,$uname,$file,$dir);
5798: if ($uri =~ m-^/(uploaded|editupload)/-) {
5799: ($udom,$uname,$file) =
5800: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
5801: $file = 'userfiles/'.$file;
5802: $dir = &propath($udom,$uname);
5803: }
5804: if ($uri =~ m-^/res/-) {
5805: ($udom,$uname) =
5806: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
5807: $file = $uri;
5808: }
5809:
5810: if (!$udom || !$uname || !$file) {
5811: # unable to handle the uri
5812: return ();
5813: }
5814:
5815: my ($result) = &dirlist($file,$udom,$uname,$dir);
5816: my @stats = split('&', $result);
5817:
5818: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
5819: shift(@stats); #filename is first
5820: return @stats;
5821: }
5822: return ();
5823: }
5824:
5825: # -------------------------------------------------------- Value of a Condition
5826:
5827: # gets the value of a specific preevaluated condition
5828: # stored in the string $env{user.state.<cid>}
5829: # or looks up a condition reference in the bighash and if if hasn't
5830: # already been evaluated recurses into docondval to get the value of
5831: # the condition, then memoizing it to
5832: # $env{user.state.<cid>.<condition>}
5833: sub directcondval {
5834: my $number=shift;
5835: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
5836: &Apache::lonuserstate::evalstate();
5837: }
5838: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
5839: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
5840: } elsif ($number =~ /^_/) {
5841: my $sub_condition;
5842: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
5843: &GDBM_READER(),0640)) {
5844: $sub_condition=$bighash{'conditions'.$number};
5845: untie(%bighash);
5846: }
5847: my $value = &docondval($sub_condition);
5848: &appenv('user.state.'.$env{'request.course.id'}.".$number" => $value);
5849: return $value;
5850: }
5851: if ($env{'user.state.'.$env{'request.course.id'}}) {
5852: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
5853: } else {
5854: return 2;
5855: }
5856: }
5857:
5858: # get the collection of conditions for this resource
5859: sub condval {
5860: my $condidx=shift;
5861: my $allpathcond='';
5862: foreach my $cond (split(/\|/,$condidx)) {
5863: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
5864: $allpathcond.=
5865: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
5866: }
5867: }
5868: $allpathcond=~s/\|$//;
5869: return &docondval($allpathcond);
5870: }
5871:
5872: #evaluates an expression of conditions
5873: sub docondval {
5874: my ($allpathcond) = @_;
5875: my $result=0;
5876: if ($env{'request.course.id'}
5877: && defined($allpathcond)) {
5878: my $operand='|';
5879: my @stack;
5880: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
5881: if ($chunk eq '(') {
5882: push @stack,($operand,$result);
5883: } elsif ($chunk eq ')') {
5884: my $before=pop @stack;
5885: if (pop @stack eq '&') {
5886: $result=$result>$before?$before:$result;
5887: } else {
5888: $result=$result>$before?$result:$before;
5889: }
5890: } elsif (($chunk eq '&') || ($chunk eq '|')) {
5891: $operand=$chunk;
5892: } else {
5893: my $new=directcondval($chunk);
5894: if ($operand eq '&') {
5895: $result=$result>$new?$new:$result;
5896: } else {
5897: $result=$result>$new?$result:$new;
5898: }
5899: }
5900: }
5901: }
5902: return $result;
5903: }
5904:
5905: # ---------------------------------------------------- Devalidate courseresdata
5906:
5907: sub devalidatecourseresdata {
5908: my ($coursenum,$coursedomain)=@_;
5909: my $hashid=$coursenum.':'.$coursedomain;
5910: &devalidate_cache_new('courseres',$hashid);
5911: }
5912:
5913:
5914: # --------------------------------------------------- Course Resourcedata Query
5915: #
5916: # Parameters:
5917: # $coursenum - Number of the course.
5918: # $coursedomain - Domain at which the course was created.
5919: # Returns:
5920: # A hash of the course parameters along (I think) with timestamps
5921: # and version info.
5922:
5923: sub get_courseresdata {
5924: my ($coursenum,$coursedomain)=@_;
5925: my $coursehom=&homeserver($coursenum,$coursedomain);
5926: my $hashid=$coursenum.':'.$coursedomain;
5927: my ($result,$cached)=&is_cached_new('courseres',$hashid);
5928: my %dumpreply;
5929: unless (defined($cached)) {
5930: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
5931: $result=\%dumpreply;
5932: my ($tmp) = keys(%dumpreply);
5933: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
5934: &do_cache_new('courseres',$hashid,$result,600);
5935: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
5936: return $tmp;
5937: } elsif ($tmp =~ /^(error)/) {
5938: $result=undef;
5939: &do_cache_new('courseres',$hashid,$result,600);
5940: }
5941: }
5942: return $result;
5943: }
5944:
5945: sub devalidateuserresdata {
5946: my ($uname,$udom)=@_;
5947: my $hashid="$udom:$uname";
5948: &devalidate_cache_new('userres',$hashid);
5949: }
5950:
5951: sub get_userresdata {
5952: my ($uname,$udom)=@_;
5953: #most student don\'t have any data set, check if there is some data
5954: if (&EXT_cache_status($udom,$uname)) { return undef; }
5955:
5956: my $hashid="$udom:$uname";
5957: my ($result,$cached)=&is_cached_new('userres',$hashid);
5958: if (!defined($cached)) {
5959: my %resourcedata=&dump('resourcedata',$udom,$uname);
5960: $result=\%resourcedata;
5961: &do_cache_new('userres',$hashid,$result,600);
5962: }
5963: my ($tmp)=keys(%$result);
5964: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
5965: return $result;
5966: }
5967: #error 2 occurs when the .db doesn't exist
5968: if ($tmp!~/error: 2 /) {
5969: &logthis("<font color=\"blue\">WARNING:".
5970: " Trying to get resource data for ".
5971: $uname." at ".$udom.": ".
5972: $tmp."</font>");
5973: } elsif ($tmp=~/error: 2 /) {
5974: #&EXT_cache_set($udom,$uname);
5975: &do_cache_new('userres',$hashid,undef,600);
5976: undef($tmp); # not really an error so don't send it back
5977: }
5978: return $tmp;
5979: }
5980: #----------------------------------------------- resdata - return resource data
5981: # Purpose:
5982: # Return resource data for either users or for a course.
5983: # Parameters:
5984: # $name - Course/user name.
5985: # $domain - Name of the domain the user/course is registered on.
5986: # $type - Type of thing $name is (must be 'course' or 'user'
5987: # @which - Array of names of resources desired.
5988: # Returns:
5989: # The value of the first reasource in @which that is found in the
5990: # resource hash.
5991: # Exceptional Conditions:
5992: # If the $type passed in is not valid (not the string 'course' or
5993: # 'user', an undefined reference is returned.
5994: # If none of the resources are found, an undef is returned
5995: sub resdata {
5996: my ($name,$domain,$type,@which)=@_;
5997: my $result;
5998: if ($type eq 'course') {
5999: $result=&get_courseresdata($name,$domain);
6000: } elsif ($type eq 'user') {
6001: $result=&get_userresdata($name,$domain);
6002: }
6003: if (!ref($result)) { return $result; }
6004: foreach my $item (@which) {
6005: if (defined($result->{$item})) {
6006: return $result->{$item};
6007: }
6008: }
6009: return undef;
6010: }
6011:
6012: #
6013: # EXT resource caching routines
6014: #
6015:
6016: sub clear_EXT_cache_status {
6017: &delenv('cache.EXT.');
6018: }
6019:
6020: sub EXT_cache_status {
6021: my ($target_domain,$target_user) = @_;
6022: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
6023: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
6024: # We know already the user has no data
6025: return 1;
6026: } else {
6027: return 0;
6028: }
6029: }
6030:
6031: sub EXT_cache_set {
6032: my ($target_domain,$target_user) = @_;
6033: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
6034: #&appenv($cachename => time);
6035: }
6036:
6037: # --------------------------------------------------------- Value of a Variable
6038: sub EXT {
6039:
6040: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
6041: unless ($varname) { return ''; }
6042: #get real user name/domain, courseid and symb
6043: my $courseid;
6044: my $publicuser;
6045: if ($symbparm) {
6046: $symbparm=&get_symb_from_alias($symbparm);
6047: }
6048: if (!($uname && $udom)) {
6049: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
6050: if (!$symbparm) { $symbparm=$cursymb; }
6051: } else {
6052: $courseid=$env{'request.course.id'};
6053: }
6054: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
6055: my $rest;
6056: if (defined($therest[0])) {
6057: $rest=join('.',@therest);
6058: } else {
6059: $rest='';
6060: }
6061:
6062: my $qualifierrest=$qualifier;
6063: if ($rest) { $qualifierrest.='.'.$rest; }
6064: my $spacequalifierrest=$space;
6065: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
6066: if ($realm eq 'user') {
6067: # --------------------------------------------------------------- user.resource
6068: if ($space eq 'resource') {
6069: if ( (defined($Apache::lonhomework::parsing_a_problem)
6070: || defined($Apache::lonhomework::parsing_a_task))
6071: &&
6072: ($symbparm eq &symbread()) ) {
6073: # if we are in the middle of processing the resource the
6074: # get the value we are planning on committing
6075: if (defined($Apache::lonhomework::results{$qualifierrest})) {
6076: return $Apache::lonhomework::results{$qualifierrest};
6077: } else {
6078: return $Apache::lonhomework::history{$qualifierrest};
6079: }
6080: } else {
6081: my %restored;
6082: if ($publicuser || $env{'request.state'} eq 'construct') {
6083: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
6084: } else {
6085: %restored=&restore($symbparm,$courseid,$udom,$uname);
6086: }
6087: return $restored{$qualifierrest};
6088: }
6089: # ----------------------------------------------------------------- user.access
6090: } elsif ($space eq 'access') {
6091: # FIXME - not supporting calls for a specific user
6092: return &allowed($qualifier,$rest);
6093: # ------------------------------------------ user.preferences, user.environment
6094: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
6095: if (($uname eq $env{'user.name'}) &&
6096: ($udom eq $env{'user.domain'})) {
6097: return $env{join('.',('environment',$qualifierrest))};
6098: } else {
6099: my %returnhash;
6100: if (!$publicuser) {
6101: %returnhash=&userenvironment($udom,$uname,
6102: $qualifierrest);
6103: }
6104: return $returnhash{$qualifierrest};
6105: }
6106: # ----------------------------------------------------------------- user.course
6107: } elsif ($space eq 'course') {
6108: # FIXME - not supporting calls for a specific user
6109: return $env{join('.',('request.course',$qualifier))};
6110: # ------------------------------------------------------------------- user.role
6111: } elsif ($space eq 'role') {
6112: # FIXME - not supporting calls for a specific user
6113: my ($role,$where)=split(/\./,$env{'request.role'});
6114: if ($qualifier eq 'value') {
6115: return $role;
6116: } elsif ($qualifier eq 'extent') {
6117: return $where;
6118: }
6119: # ----------------------------------------------------------------- user.domain
6120: } elsif ($space eq 'domain') {
6121: return $udom;
6122: # ------------------------------------------------------------------- user.name
6123: } elsif ($space eq 'name') {
6124: return $uname;
6125: # ---------------------------------------------------- Any other user namespace
6126: } else {
6127: my %reply;
6128: if (!$publicuser) {
6129: %reply=&get($space,[$qualifierrest],$udom,$uname);
6130: }
6131: return $reply{$qualifierrest};
6132: }
6133: } elsif ($realm eq 'query') {
6134: # ---------------------------------------------- pull stuff out of query string
6135: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
6136: [$spacequalifierrest]);
6137: return $env{'form.'.$spacequalifierrest};
6138: } elsif ($realm eq 'request') {
6139: # ------------------------------------------------------------- request.browser
6140: if ($space eq 'browser') {
6141: if ($qualifier eq 'textremote') {
6142: if (&Apache::lonlocal::mt('textual_remote_display') eq 'on') {
6143: return 1;
6144: } else {
6145: return 0;
6146: }
6147: } else {
6148: return $env{'browser.'.$qualifier};
6149: }
6150: # ------------------------------------------------------------ request.filename
6151: } else {
6152: return $env{'request.'.$spacequalifierrest};
6153: }
6154: } elsif ($realm eq 'course') {
6155: # ---------------------------------------------------------- course.description
6156: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
6157: } elsif ($realm eq 'resource') {
6158:
6159: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
6160: if (!$symbparm) { $symbparm=&symbread(); }
6161: }
6162:
6163: if ($space eq 'title') {
6164: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
6165: return &gettitle($symbparm);
6166: }
6167:
6168: if ($space eq 'map') {
6169: my ($map) = &decode_symb($symbparm);
6170: return &symbread($map);
6171: }
6172:
6173: my ($section, $group, @groups);
6174: my ($courselevelm,$courselevel);
6175: if ($symbparm && defined($courseid) &&
6176: $courseid eq $env{'request.course.id'}) {
6177:
6178: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
6179:
6180: # ----------------------------------------------------- Cascading lookup scheme
6181: my $symbp=$symbparm;
6182: my $mapp=&deversion((&decode_symb($symbp))[0]);
6183:
6184: my $symbparm=$symbp.'.'.$spacequalifierrest;
6185: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
6186:
6187: if (($env{'user.name'} eq $uname) &&
6188: ($env{'user.domain'} eq $udom)) {
6189: $section=$env{'request.course.sec'};
6190: @groups = split(/:/,$env{'request.course.groups'});
6191: @groups=&sort_course_groups($courseid,@groups);
6192: } else {
6193: if (! defined($usection)) {
6194: $section=&getsection($udom,$uname,$courseid);
6195: } else {
6196: $section = $usection;
6197: }
6198: @groups = &get_users_groups($udom,$uname,$courseid);
6199: }
6200:
6201: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
6202: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
6203: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
6204:
6205: $courselevel=$courseid.'.'.$spacequalifierrest;
6206: my $courselevelr=$courseid.'.'.$symbparm;
6207: $courselevelm=$courseid.'.'.$mapparm;
6208:
6209: # ----------------------------------------------------------- first, check user
6210:
6211: my $userreply=&resdata($uname,$udom,'user',
6212: ($courselevelr,$courselevelm,
6213: $courselevel));
6214: if (defined($userreply)) { return $userreply; }
6215:
6216: # ------------------------------------------------ second, check some of course
6217: my $coursereply;
6218: if (@groups > 0) {
6219: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
6220: $mapparm,$spacequalifierrest);
6221: if (defined($coursereply)) { return $coursereply; }
6222: }
6223:
6224: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
6225: $env{'course.'.$courseid.'.domain'},
6226: 'course',
6227: ($seclevelr,$seclevelm,$seclevel,
6228: $courselevelr));
6229: if (defined($coursereply)) { return $coursereply; }
6230:
6231: # ------------------------------------------------------ third, check map parms
6232: my %parmhash=();
6233: my $thisparm='';
6234: if (tie(%parmhash,'GDBM_File',
6235: $env{'request.course.fn'}.'_parms.db',
6236: &GDBM_READER(),0640)) {
6237: $thisparm=$parmhash{$symbparm};
6238: untie(%parmhash);
6239: }
6240: if ($thisparm) { return $thisparm; }
6241: }
6242: # ------------------------------------------ fourth, look in resource metadata
6243:
6244: $spacequalifierrest=~s/\./\_/;
6245: my $filename;
6246: if (!$symbparm) { $symbparm=&symbread(); }
6247: if ($symbparm) {
6248: $filename=(&decode_symb($symbparm))[2];
6249: } else {
6250: $filename=$env{'request.filename'};
6251: }
6252: my $metadata=&metadata($filename,$spacequalifierrest);
6253: if (defined($metadata)) { return $metadata; }
6254: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
6255: if (defined($metadata)) { return $metadata; }
6256:
6257: # ---------------------------------------------- fourth, look in rest pf course
6258: if ($symbparm && defined($courseid) &&
6259: $courseid eq $env{'request.course.id'}) {
6260: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
6261: $env{'course.'.$courseid.'.domain'},
6262: 'course',
6263: ($courselevelm,$courselevel));
6264: if (defined($coursereply)) { return $coursereply; }
6265: }
6266: # ------------------------------------------------------------------ Cascade up
6267: unless ($space eq '0') {
6268: my @parts=split(/_/,$space);
6269: my $id=pop(@parts);
6270: my $part=join('_',@parts);
6271: if ($part eq '') { $part='0'; }
6272: my $partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
6273: $symbparm,$udom,$uname,$section,1);
6274: if (defined($partgeneral)) { return $partgeneral; }
6275: }
6276: if ($recurse) { return undef; }
6277: my $pack_def=&packages_tab_default($filename,$varname);
6278: if (defined($pack_def)) { return $pack_def; }
6279:
6280: # ---------------------------------------------------- Any other user namespace
6281: } elsif ($realm eq 'environment') {
6282: # ----------------------------------------------------------------- environment
6283: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
6284: return $env{'environment.'.$spacequalifierrest};
6285: } else {
6286: if ($uname eq 'anonymous' && $udom eq '') {
6287: return '';
6288: }
6289: my %returnhash=&userenvironment($udom,$uname,
6290: $spacequalifierrest);
6291: return $returnhash{$spacequalifierrest};
6292: }
6293: } elsif ($realm eq 'system') {
6294: # ----------------------------------------------------------------- system.time
6295: if ($space eq 'time') {
6296: return time;
6297: }
6298: } elsif ($realm eq 'server') {
6299: # ----------------------------------------------------------------- system.time
6300: if ($space eq 'name') {
6301: return $ENV{'SERVER_NAME'};
6302: }
6303: }
6304: return '';
6305: }
6306:
6307: sub check_group_parms {
6308: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
6309: my @groupitems = ();
6310: my $resultitem;
6311: my @levels = ($symbparm,$mapparm,$what);
6312: foreach my $group (@{$groups}) {
6313: foreach my $level (@levels) {
6314: my $item = $courseid.'.['.$group.'].'.$level;
6315: push(@groupitems,$item);
6316: }
6317: }
6318: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
6319: $env{'course.'.$courseid.'.domain'},
6320: 'course',@groupitems);
6321: return $coursereply;
6322: }
6323:
6324: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
6325: my ($courseid,@groups) = @_;
6326: @groups = sort(@groups);
6327: return @groups;
6328: }
6329:
6330: sub packages_tab_default {
6331: my ($uri,$varname)=@_;
6332: my (undef,$part,$name)=split(/\./,$varname);
6333:
6334: my (@extension,@specifics,$do_default);
6335: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
6336: my ($pack_type,$pack_part)=split(/_/,$package,2);
6337: if ($pack_type eq 'default') {
6338: $do_default=1;
6339: } elsif ($pack_type eq 'extension') {
6340: push(@extension,[$package,$pack_type,$pack_part]);
6341: } elsif ($pack_part eq $part) {
6342: # only look at packages defaults for packages that this id is
6343: push(@specifics,[$package,$pack_type,$pack_part]);
6344: }
6345: }
6346: # first look for a package that matches the requested part id
6347: foreach my $package (@specifics) {
6348: my (undef,$pack_type,$pack_part)=@{$package};
6349: next if ($pack_part ne $part);
6350: if (defined($packagetab{"$pack_type&$name&default"})) {
6351: return $packagetab{"$pack_type&$name&default"};
6352: }
6353: }
6354: # look for any possible matching non extension_ package
6355: foreach my $package (@specifics) {
6356: my (undef,$pack_type,$pack_part)=@{$package};
6357: if (defined($packagetab{"$pack_type&$name&default"})) {
6358: return $packagetab{"$pack_type&$name&default"};
6359: }
6360: if ($pack_type eq 'part') { $pack_part='0'; }
6361: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
6362: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
6363: }
6364: }
6365: # look for any posible extension_ match
6366: foreach my $package (@extension) {
6367: my ($package,$pack_type)=@{$package};
6368: if (defined($packagetab{"$pack_type&$name&default"})) {
6369: return $packagetab{"$pack_type&$name&default"};
6370: }
6371: if (defined($packagetab{$package."&$name&default"})) {
6372: return $packagetab{$package."&$name&default"};
6373: }
6374: }
6375: # look for a global default setting
6376: if ($do_default && defined($packagetab{"default&$name&default"})) {
6377: return $packagetab{"default&$name&default"};
6378: }
6379: return undef;
6380: }
6381:
6382: sub add_prefix_and_part {
6383: my ($prefix,$part)=@_;
6384: my $keyroot;
6385: if (defined($prefix) && $prefix !~ /^__/) {
6386: # prefix that has a part already
6387: $keyroot=$prefix;
6388: } elsif (defined($prefix)) {
6389: # prefix that is missing a part
6390: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
6391: } else {
6392: # no prefix at all
6393: if (defined($part)) { $keyroot='_'.$part; }
6394: }
6395: return $keyroot;
6396: }
6397:
6398: # ---------------------------------------------------------------- Get metadata
6399:
6400: my %metaentry;
6401: sub metadata {
6402: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
6403: $uri=&declutter($uri);
6404: # if it is a non metadata possible uri return quickly
6405: if (($uri eq '') ||
6406: (($uri =~ m|^/*adm/|) &&
6407: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
6408: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ /^~/) ||
6409: ($uri =~ m|home/$match_username/public_html/|)) {
6410: return undef;
6411: }
6412: my $filename=$uri;
6413: $uri=~s/\.meta$//;
6414: #
6415: # Is the metadata already cached?
6416: # Look at timestamp of caching
6417: # Everything is cached by the main uri, libraries are never directly cached
6418: #
6419: if (!defined($liburi)) {
6420: my ($result,$cached)=&is_cached_new('meta',$uri);
6421: if (defined($cached)) { return $result->{':'.$what}; }
6422: }
6423: {
6424: #
6425: # Is this a recursive call for a library?
6426: #
6427: # if (! exists($metacache{$uri})) {
6428: # $metacache{$uri}={};
6429: # }
6430: if ($liburi) {
6431: $liburi=&declutter($liburi);
6432: $filename=$liburi;
6433: } else {
6434: &devalidate_cache_new('meta',$uri);
6435: undef(%metaentry);
6436: }
6437: my %metathesekeys=();
6438: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
6439: my $metastring;
6440: if ($uri !~ m -^(editupload)/-) {
6441: my $file=&filelocation('',&clutter($filename));
6442: #push(@{$metaentry{$uri.'.file'}},$file);
6443: $metastring=&getfile($file);
6444: }
6445: my $parser=HTML::LCParser->new(\$metastring);
6446: my $token;
6447: undef %metathesekeys;
6448: while ($token=$parser->get_token) {
6449: if ($token->[0] eq 'S') {
6450: if (defined($token->[2]->{'package'})) {
6451: #
6452: # This is a package - get package info
6453: #
6454: my $package=$token->[2]->{'package'};
6455: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
6456: if (defined($token->[2]->{'id'})) {
6457: $keyroot.='_'.$token->[2]->{'id'};
6458: }
6459: if ($metaentry{':packages'}) {
6460: $metaentry{':packages'}.=','.$package.$keyroot;
6461: } else {
6462: $metaentry{':packages'}=$package.$keyroot;
6463: }
6464: foreach my $pack_entry (keys(%packagetab)) {
6465: my $part=$keyroot;
6466: $part=~s/^\_//;
6467: if ($pack_entry=~/^\Q$package\E\&/ ||
6468: $pack_entry=~/^\Q$package\E_0\&/) {
6469: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
6470: # ignore package.tab specified default values
6471: # here &package_tab_default() will fetch those
6472: if ($subp eq 'default') { next; }
6473: my $value=$packagetab{$pack_entry};
6474: my $unikey;
6475: if ($pack =~ /_0$/) {
6476: $unikey='parameter_0_'.$name;
6477: $part=0;
6478: } else {
6479: $unikey='parameter'.$keyroot.'_'.$name;
6480: }
6481: if ($subp eq 'display') {
6482: $value.=' [Part: '.$part.']';
6483: }
6484: $metaentry{':'.$unikey.'.part'}=$part;
6485: $metathesekeys{$unikey}=1;
6486: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
6487: $metaentry{':'.$unikey.'.'.$subp}=$value;
6488: }
6489: if (defined($metaentry{':'.$unikey.'.default'})) {
6490: $metaentry{':'.$unikey}=
6491: $metaentry{':'.$unikey.'.default'};
6492: }
6493: }
6494: }
6495: } else {
6496: #
6497: # This is not a package - some other kind of start tag
6498: #
6499: my $entry=$token->[1];
6500: my $unikey;
6501: if ($entry eq 'import') {
6502: $unikey='';
6503: } else {
6504: $unikey=$entry;
6505: }
6506: $unikey.=&add_prefix_and_part($prefix,$token->[2]->{'part'});
6507:
6508: if (defined($token->[2]->{'id'})) {
6509: $unikey.='_'.$token->[2]->{'id'};
6510: }
6511:
6512: if ($entry eq 'import') {
6513: #
6514: # Importing a library here
6515: #
6516: if ($depthcount<20) {
6517: my $location=$parser->get_text('/import');
6518: my $dir=$filename;
6519: $dir=~s|[^/]*$||;
6520: $location=&filelocation($dir,$location);
6521: my $metadata =
6522: &metadata($uri,'keys', $location,$unikey,
6523: $depthcount+1);
6524: foreach my $meta (split(',',$metadata)) {
6525: $metaentry{':'.$meta}=$metaentry{':'.$meta};
6526: $metathesekeys{$meta}=1;
6527: }
6528: }
6529: } else {
6530:
6531: if (defined($token->[2]->{'name'})) {
6532: $unikey.='_'.$token->[2]->{'name'};
6533: }
6534: $metathesekeys{$unikey}=1;
6535: foreach my $param (@{$token->[3]}) {
6536: $metaentry{':'.$unikey.'.'.$param} =
6537: $token->[2]->{$param};
6538: }
6539: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
6540: my $default=$metaentry{':'.$unikey.'.default'};
6541: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
6542: # only ws inside the tag, and not in default, so use default
6543: # as value
6544: $metaentry{':'.$unikey}=$default;
6545: } else {
6546: # either something interesting inside the tag or default
6547: # uninteresting
6548: $metaentry{':'.$unikey}=$internaltext;
6549: }
6550: # end of not-a-package not-a-library import
6551: }
6552: # end of not-a-package start tag
6553: }
6554: # the next is the end of "start tag"
6555: }
6556: }
6557: my ($extension) = ($uri =~ /\.(\w+)$/);
6558: foreach my $key (keys(%packagetab)) {
6559: #no specific packages #how's our extension
6560: if ($key!~/^extension_\Q$extension\E&/) { next; }
6561: &metadata_create_package_def($uri,$key,'extension_'.$extension,
6562: \%metathesekeys);
6563: }
6564: if (!exists($metaentry{':packages'})) {
6565: foreach my $key (keys(%packagetab)) {
6566: #no specific packages well let's get default then
6567: if ($key!~/^default&/) { next; }
6568: &metadata_create_package_def($uri,$key,'default',
6569: \%metathesekeys);
6570: }
6571: }
6572: # are there custom rights to evaluate
6573: if ($metaentry{':copyright'} eq 'custom') {
6574:
6575: #
6576: # Importing a rights file here
6577: #
6578: unless ($depthcount) {
6579: my $location=$metaentry{':customdistributionfile'};
6580: my $dir=$filename;
6581: $dir=~s|[^/]*$||;
6582: $location=&filelocation($dir,$location);
6583: my $rights_metadata =
6584: &metadata($uri,'keys',$location,'_rights',
6585: $depthcount+1);
6586: foreach my $rights (split(',',$rights_metadata)) {
6587: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
6588: $metathesekeys{$rights}=1;
6589: }
6590: }
6591: }
6592: # uniqifiy package listing
6593: my %seen;
6594: my @uniq_packages =
6595: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
6596: $metaentry{':packages'} = join(',',@uniq_packages);
6597:
6598: $metaentry{':keys'} = join(',',keys(%metathesekeys));
6599: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
6600: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
6601: &do_cache_new('meta',$uri,\%metaentry,60*60);
6602: # this is the end of "was not already recently cached
6603: }
6604: return $metaentry{':'.$what};
6605: }
6606:
6607: sub metadata_create_package_def {
6608: my ($uri,$key,$package,$metathesekeys)=@_;
6609: my ($pack,$name,$subp)=split(/\&/,$key);
6610: if ($subp eq 'default') { next; }
6611:
6612: if (defined($metaentry{':packages'})) {
6613: $metaentry{':packages'}.=','.$package;
6614: } else {
6615: $metaentry{':packages'}=$package;
6616: }
6617: my $value=$packagetab{$key};
6618: my $unikey;
6619: $unikey='parameter_0_'.$name;
6620: $metaentry{':'.$unikey.'.part'}=0;
6621: $$metathesekeys{$unikey}=1;
6622: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
6623: $metaentry{':'.$unikey.'.'.$subp}=$value;
6624: }
6625: if (defined($metaentry{':'.$unikey.'.default'})) {
6626: $metaentry{':'.$unikey}=
6627: $metaentry{':'.$unikey.'.default'};
6628: }
6629: }
6630:
6631: sub metadata_generate_part0 {
6632: my ($metadata,$metacache,$uri) = @_;
6633: my %allnames;
6634: foreach my $metakey (keys(%$metadata)) {
6635: if ($metakey=~/^parameter\_(.*)/) {
6636: my $part=$$metacache{':'.$metakey.'.part'};
6637: my $name=$$metacache{':'.$metakey.'.name'};
6638: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
6639: $allnames{$name}=$part;
6640: }
6641: }
6642: }
6643: foreach my $name (keys(%allnames)) {
6644: $$metadata{"parameter_0_$name"}=1;
6645: my $key=":parameter_0_$name";
6646: $$metacache{"$key.part"}='0';
6647: $$metacache{"$key.name"}=$name;
6648: $$metacache{"$key.type"}=$$metacache{':parameter_'.
6649: $allnames{$name}.'_'.$name.
6650: '.type'};
6651: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
6652: '.display'};
6653: my $expr='[Part: '.$allnames{$name}.']';
6654: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
6655: $$metacache{"$key.display"}=$olddis;
6656: }
6657: }
6658:
6659: # ------------------------------------------------------ Devalidate title cache
6660:
6661: sub devalidate_title_cache {
6662: my ($url)=@_;
6663: if (!$env{'request.course.id'}) { return; }
6664: my $symb=&symbread($url);
6665: if (!$symb) { return; }
6666: my $key=$env{'request.course.id'}."\0".$symb;
6667: &devalidate_cache_new('title',$key);
6668: }
6669:
6670: # ------------------------------------------------- Get the title of a resource
6671:
6672: sub gettitle {
6673: my $urlsymb=shift;
6674: my $symb=&symbread($urlsymb);
6675: if ($symb) {
6676: my $key=$env{'request.course.id'}."\0".$symb;
6677: my ($result,$cached)=&is_cached_new('title',$key);
6678: if (defined($cached)) {
6679: return $result;
6680: }
6681: my ($map,$resid,$url)=&decode_symb($symb);
6682: my $title='';
6683: my %bighash;
6684: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
6685: &GDBM_READER(),0640)) {
6686: my $mapid=$bighash{'map_pc_'.&clutter($map)};
6687: $title=$bighash{'title_'.$mapid.'.'.$resid};
6688: untie %bighash;
6689: }
6690: $title=~s/\&colon\;/\:/gs;
6691: if ($title) {
6692: return &do_cache_new('title',$key,$title,600);
6693: }
6694: $urlsymb=$url;
6695: }
6696: my $title=&metadata($urlsymb,'title');
6697: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
6698: return $title;
6699: }
6700:
6701: sub get_slot {
6702: my ($which,$cnum,$cdom)=@_;
6703: if (!$cnum || !$cdom) {
6704: (undef,my $courseid)=&whichuser();
6705: $cdom=$env{'course.'.$courseid.'.domain'};
6706: $cnum=$env{'course.'.$courseid.'.num'};
6707: }
6708: my $key=join("\0",'slots',$cdom,$cnum,$which);
6709: my %slotinfo;
6710: if (exists($remembered{$key})) {
6711: $slotinfo{$which} = $remembered{$key};
6712: } else {
6713: %slotinfo=&get('slots',[$which],$cdom,$cnum);
6714: &Apache::lonhomework::showhash(%slotinfo);
6715: my ($tmp)=keys(%slotinfo);
6716: if ($tmp=~/^error:/) { return (); }
6717: $remembered{$key} = $slotinfo{$which};
6718: }
6719: if (ref($slotinfo{$which}) eq 'HASH') {
6720: return %{$slotinfo{$which}};
6721: }
6722: return $slotinfo{$which};
6723: }
6724: # ------------------------------------------------- Update symbolic store links
6725:
6726: sub symblist {
6727: my ($mapname,%newhash)=@_;
6728: $mapname=&deversion(&declutter($mapname));
6729: my %hash;
6730: if (($env{'request.course.fn'}) && (%newhash)) {
6731: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
6732: &GDBM_WRCREAT(),0640)) {
6733: foreach my $url (keys %newhash) {
6734: next if ($url eq 'last_known'
6735: && $env{'form.no_update_last_known'});
6736: $hash{declutter($url)}=&encode_symb($mapname,
6737: $newhash{$url}->[1],
6738: $newhash{$url}->[0]);
6739: }
6740: if (untie(%hash)) {
6741: return 'ok';
6742: }
6743: }
6744: }
6745: return 'error';
6746: }
6747:
6748: # --------------------------------------------------------------- Verify a symb
6749:
6750: sub symbverify {
6751: my ($symb,$thisurl)=@_;
6752: my $thisfn=$thisurl;
6753: $thisfn=&declutter($thisfn);
6754: # direct jump to resource in page or to a sequence - will construct own symbs
6755: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
6756: # check URL part
6757: my ($map,$resid,$url)=&decode_symb($symb);
6758:
6759: unless ($url eq $thisfn) { return 0; }
6760:
6761: $symb=&symbclean($symb);
6762: $thisurl=&deversion($thisurl);
6763: $thisfn=&deversion($thisfn);
6764:
6765: my %bighash;
6766: my $okay=0;
6767:
6768: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
6769: &GDBM_READER(),0640)) {
6770: my $ids=$bighash{'ids_'.&clutter($thisurl)};
6771: unless ($ids) {
6772: $ids=$bighash{'ids_/'.$thisurl};
6773: }
6774: if ($ids) {
6775: # ------------------------------------------------------------------- Has ID(s)
6776: foreach my $id (split(/\,/,$ids)) {
6777: my ($mapid,$resid)=split(/\./,$id);
6778: if (
6779: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
6780: eq $symb) {
6781: if (($env{'request.role.adv'}) ||
6782: $bighash{'encrypted_'.$id} eq $env{'request.enc'}) {
6783: $okay=1;
6784: }
6785: }
6786: }
6787: }
6788: untie(%bighash);
6789: }
6790: return $okay;
6791: }
6792:
6793: # --------------------------------------------------------------- Clean-up symb
6794:
6795: sub symbclean {
6796: my $symb=shift;
6797: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
6798: # remove version from map
6799: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
6800:
6801: # remove version from URL
6802: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
6803:
6804: # remove wrapper
6805:
6806: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
6807: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
6808: return $symb;
6809: }
6810:
6811: # ---------------------------------------------- Split symb to find map and url
6812:
6813: sub encode_symb {
6814: my ($map,$resid,$url)=@_;
6815: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
6816: }
6817:
6818: sub decode_symb {
6819: my $symb=shift;
6820: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
6821: my ($map,$resid,$url)=split(/___/,$symb);
6822: return (&fixversion($map),$resid,&fixversion($url));
6823: }
6824:
6825: sub fixversion {
6826: my $fn=shift;
6827: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
6828: my %bighash;
6829: my $uri=&clutter($fn);
6830: my $key=$env{'request.course.id'}.'_'.$uri;
6831: # is this cached?
6832: my ($result,$cached)=&is_cached_new('courseresversion',$key);
6833: if (defined($cached)) { return $result; }
6834: # unfortunately not cached, or expired
6835: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
6836: &GDBM_READER(),0640)) {
6837: if ($bighash{'version_'.$uri}) {
6838: my $version=$bighash{'version_'.$uri};
6839: unless (($version eq 'mostrecent') ||
6840: ($version==&getversion($uri))) {
6841: $uri=~s/\.(\w+)$/\.$version\.$1/;
6842: }
6843: }
6844: untie %bighash;
6845: }
6846: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
6847: }
6848:
6849: sub deversion {
6850: my $url=shift;
6851: $url=~s/\.\d+\.(\w+)$/\.$1/;
6852: return $url;
6853: }
6854:
6855: # ------------------------------------------------------ Return symb list entry
6856:
6857: sub symbread {
6858: my ($thisfn,$donotrecurse)=@_;
6859: my $cache_str='request.symbread.cached.'.$thisfn;
6860: if (defined($env{$cache_str})) { return $env{$cache_str}; }
6861: # no filename provided? try from environment
6862: unless ($thisfn) {
6863: if ($env{'request.symb'}) {
6864: return $env{$cache_str}=&symbclean($env{'request.symb'});
6865: }
6866: $thisfn=$env{'request.filename'};
6867: }
6868: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
6869: # is that filename actually a symb? Verify, clean, and return
6870: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
6871: if (&symbverify($thisfn,$1)) {
6872: return $env{$cache_str}=&symbclean($thisfn);
6873: }
6874: }
6875: $thisfn=declutter($thisfn);
6876: my %hash;
6877: my %bighash;
6878: my $syval='';
6879: if (($env{'request.course.fn'}) && ($thisfn)) {
6880: my $targetfn = $thisfn;
6881: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
6882: $targetfn = 'adm/wrapper/'.$thisfn;
6883: }
6884: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
6885: $targetfn=$1;
6886: }
6887: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
6888: &GDBM_READER(),0640)) {
6889: $syval=$hash{$targetfn};
6890: untie(%hash);
6891: }
6892: # ---------------------------------------------------------- There was an entry
6893: if ($syval) {
6894: #unless ($syval=~/\_\d+$/) {
6895: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
6896: #&appenv('request.ambiguous' => $thisfn);
6897: #return $env{$cache_str}='';
6898: #}
6899: #$syval.=$1;
6900: #}
6901: } else {
6902: # ------------------------------------------------------- Was not in symb table
6903: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
6904: &GDBM_READER(),0640)) {
6905: # ---------------------------------------------- Get ID(s) for current resource
6906: my $ids=$bighash{'ids_'.&clutter($thisfn)};
6907: unless ($ids) {
6908: $ids=$bighash{'ids_/'.$thisfn};
6909: }
6910: unless ($ids) {
6911: # alias?
6912: $ids=$bighash{'mapalias_'.$thisfn};
6913: }
6914: if ($ids) {
6915: # ------------------------------------------------------------------- Has ID(s)
6916: my @possibilities=split(/\,/,$ids);
6917: if ($#possibilities==0) {
6918: # ----------------------------------------------- There is only one possibility
6919: my ($mapid,$resid)=split(/\./,$ids);
6920: $syval=&encode_symb($bighash{'map_id_'.$mapid},
6921: $resid,$thisfn);
6922: } elsif (!$donotrecurse) {
6923: # ------------------------------------------ There is more than one possibility
6924: my $realpossible=0;
6925: foreach my $id (@possibilities) {
6926: my $file=$bighash{'src_'.$id};
6927: if (&allowed('bre',$file)) {
6928: my ($mapid,$resid)=split(/\./,$id);
6929: if ($bighash{'map_type_'.$mapid} ne 'page') {
6930: $realpossible++;
6931: $syval=&encode_symb($bighash{'map_id_'.$mapid},
6932: $resid,$thisfn);
6933: }
6934: }
6935: }
6936: if ($realpossible!=1) { $syval=''; }
6937: } else {
6938: $syval='';
6939: }
6940: }
6941: untie(%bighash)
6942: }
6943: }
6944: if ($syval) {
6945: return $env{$cache_str}=$syval;
6946: }
6947: }
6948: &appenv('request.ambiguous' => $thisfn);
6949: return $env{$cache_str}='';
6950: }
6951:
6952: # ---------------------------------------------------------- Return random seed
6953:
6954: sub numval {
6955: my $txt=shift;
6956: $txt=~tr/A-J/0-9/;
6957: $txt=~tr/a-j/0-9/;
6958: $txt=~tr/K-T/0-9/;
6959: $txt=~tr/k-t/0-9/;
6960: $txt=~tr/U-Z/0-5/;
6961: $txt=~tr/u-z/0-5/;
6962: $txt=~s/\D//g;
6963: if ($_64bit) { if ($txt > 2**32) { return -1; } }
6964: return int($txt);
6965: }
6966:
6967: sub numval2 {
6968: my $txt=shift;
6969: $txt=~tr/A-J/0-9/;
6970: $txt=~tr/a-j/0-9/;
6971: $txt=~tr/K-T/0-9/;
6972: $txt=~tr/k-t/0-9/;
6973: $txt=~tr/U-Z/0-5/;
6974: $txt=~tr/u-z/0-5/;
6975: $txt=~s/\D//g;
6976: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
6977: my $total;
6978: foreach my $val (@txts) { $total+=$val; }
6979: if ($_64bit) { if ($total > 2**32) { return -1; } }
6980: return int($total);
6981: }
6982:
6983: sub numval3 {
6984: use integer;
6985: my $txt=shift;
6986: $txt=~tr/A-J/0-9/;
6987: $txt=~tr/a-j/0-9/;
6988: $txt=~tr/K-T/0-9/;
6989: $txt=~tr/k-t/0-9/;
6990: $txt=~tr/U-Z/0-5/;
6991: $txt=~tr/u-z/0-5/;
6992: $txt=~s/\D//g;
6993: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
6994: my $total;
6995: foreach my $val (@txts) { $total+=$val; }
6996: if ($_64bit) { $total=(($total<<32)>>32); }
6997: return $total;
6998: }
6999:
7000: sub digest {
7001: my ($data)=@_;
7002: my $digest=&Digest::MD5::md5($data);
7003: my ($a,$b,$c,$d)=unpack("iiii",$digest);
7004: my ($e,$f);
7005: {
7006: use integer;
7007: $e=($a+$b);
7008: $f=($c+$d);
7009: if ($_64bit) {
7010: $e=(($e<<32)>>32);
7011: $f=(($f<<32)>>32);
7012: }
7013: }
7014: if (wantarray) {
7015: return ($e,$f);
7016: } else {
7017: my $g;
7018: {
7019: use integer;
7020: $g=($e+$f);
7021: if ($_64bit) {
7022: $g=(($g<<32)>>32);
7023: }
7024: }
7025: return $g;
7026: }
7027: }
7028:
7029: sub latest_rnd_algorithm_id {
7030: return '64bit5';
7031: }
7032:
7033: sub get_rand_alg {
7034: my ($courseid)=@_;
7035: if (!$courseid) { $courseid=(&whichuser())[1]; }
7036: if ($courseid) {
7037: return $env{"course.$courseid.rndseed"};
7038: }
7039: return &latest_rnd_algorithm_id();
7040: }
7041:
7042: sub validCODE {
7043: my ($CODE)=@_;
7044: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
7045: return 0;
7046: }
7047:
7048: sub getCODE {
7049: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
7050: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
7051: defined($Apache::lonhomework::parsing_a_task) ) &&
7052: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
7053: return $Apache::lonhomework::history{'resource.CODE'};
7054: }
7055: return undef;
7056: }
7057:
7058: sub rndseed {
7059: my ($symb,$courseid,$domain,$username)=@_;
7060: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
7061: if (!$symb) {
7062: unless ($symb=$wsymb) { return time; }
7063: }
7064: if (!$courseid) { $courseid=$wcourseid; }
7065: if (!$domain) { $domain=$wdomain; }
7066: if (!$username) { $username=$wusername }
7067: my $which=&get_rand_alg();
7068:
7069: if (defined(&getCODE())) {
7070: if ($which eq '64bit5') {
7071: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
7072: } elsif ($which eq '64bit4') {
7073: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
7074: } else {
7075: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
7076: }
7077: } elsif ($which eq '64bit5') {
7078: return &rndseed_64bit5($symb,$courseid,$domain,$username);
7079: } elsif ($which eq '64bit4') {
7080: return &rndseed_64bit4($symb,$courseid,$domain,$username);
7081: } elsif ($which eq '64bit3') {
7082: return &rndseed_64bit3($symb,$courseid,$domain,$username);
7083: } elsif ($which eq '64bit2') {
7084: return &rndseed_64bit2($symb,$courseid,$domain,$username);
7085: } elsif ($which eq '64bit') {
7086: return &rndseed_64bit($symb,$courseid,$domain,$username);
7087: }
7088: return &rndseed_32bit($symb,$courseid,$domain,$username);
7089: }
7090:
7091: sub rndseed_32bit {
7092: my ($symb,$courseid,$domain,$username)=@_;
7093: {
7094: use integer;
7095: my $symbchck=unpack("%32C*",$symb) << 27;
7096: my $symbseed=numval($symb) << 22;
7097: my $namechck=unpack("%32C*",$username) << 17;
7098: my $nameseed=numval($username) << 12;
7099: my $domainseed=unpack("%32C*",$domain) << 7;
7100: my $courseseed=unpack("%32C*",$courseid);
7101: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
7102: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7103: #&logthis("rndseed :$num:$symb");
7104: if ($_64bit) { $num=(($num<<32)>>32); }
7105: return $num;
7106: }
7107: }
7108:
7109: sub rndseed_64bit {
7110: my ($symb,$courseid,$domain,$username)=@_;
7111: {
7112: use integer;
7113: my $symbchck=unpack("%32S*",$symb) << 21;
7114: my $symbseed=numval($symb) << 10;
7115: my $namechck=unpack("%32S*",$username);
7116:
7117: my $nameseed=numval($username) << 21;
7118: my $domainseed=unpack("%32S*",$domain) << 10;
7119: my $courseseed=unpack("%32S*",$courseid);
7120:
7121: my $num1=$symbchck+$symbseed+$namechck;
7122: my $num2=$nameseed+$domainseed+$courseseed;
7123: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7124: #&logthis("rndseed :$num:$symb");
7125: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7126: return "$num1,$num2";
7127: }
7128: }
7129:
7130: sub rndseed_64bit2 {
7131: my ($symb,$courseid,$domain,$username)=@_;
7132: {
7133: use integer;
7134: # strings need to be an even # of cahracters long, it it is odd the
7135: # last characters gets thrown away
7136: my $symbchck=unpack("%32S*",$symb.' ') << 21;
7137: my $symbseed=numval($symb) << 10;
7138: my $namechck=unpack("%32S*",$username.' ');
7139:
7140: my $nameseed=numval($username) << 21;
7141: my $domainseed=unpack("%32S*",$domain.' ') << 10;
7142: my $courseseed=unpack("%32S*",$courseid.' ');
7143:
7144: my $num1=$symbchck+$symbseed+$namechck;
7145: my $num2=$nameseed+$domainseed+$courseseed;
7146: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7147: #&logthis("rndseed :$num:$symb");
7148: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7149: return "$num1,$num2";
7150: }
7151: }
7152:
7153: sub rndseed_64bit3 {
7154: my ($symb,$courseid,$domain,$username)=@_;
7155: {
7156: use integer;
7157: # strings need to be an even # of cahracters long, it it is odd the
7158: # last characters gets thrown away
7159: my $symbchck=unpack("%32S*",$symb.' ') << 21;
7160: my $symbseed=numval2($symb) << 10;
7161: my $namechck=unpack("%32S*",$username.' ');
7162:
7163: my $nameseed=numval2($username) << 21;
7164: my $domainseed=unpack("%32S*",$domain.' ') << 10;
7165: my $courseseed=unpack("%32S*",$courseid.' ');
7166:
7167: my $num1=$symbchck+$symbseed+$namechck;
7168: my $num2=$nameseed+$domainseed+$courseseed;
7169: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7170: #&logthis("rndseed :$num1:$num2:$_64bit");
7171: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7172:
7173: return "$num1:$num2";
7174: }
7175: }
7176:
7177: sub rndseed_64bit4 {
7178: my ($symb,$courseid,$domain,$username)=@_;
7179: {
7180: use integer;
7181: # strings need to be an even # of cahracters long, it it is odd the
7182: # last characters gets thrown away
7183: my $symbchck=unpack("%32S*",$symb.' ') << 21;
7184: my $symbseed=numval3($symb) << 10;
7185: my $namechck=unpack("%32S*",$username.' ');
7186:
7187: my $nameseed=numval3($username) << 21;
7188: my $domainseed=unpack("%32S*",$domain.' ') << 10;
7189: my $courseseed=unpack("%32S*",$courseid.' ');
7190:
7191: my $num1=$symbchck+$symbseed+$namechck;
7192: my $num2=$nameseed+$domainseed+$courseseed;
7193: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7194: #&logthis("rndseed :$num1:$num2:$_64bit");
7195: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7196:
7197: return "$num1:$num2";
7198: }
7199: }
7200:
7201: sub rndseed_64bit5 {
7202: my ($symb,$courseid,$domain,$username)=@_;
7203: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
7204: return "$num1:$num2";
7205: }
7206:
7207: sub rndseed_CODE_64bit {
7208: my ($symb,$courseid,$domain,$username)=@_;
7209: {
7210: use integer;
7211: my $symbchck=unpack("%32S*",$symb.' ') << 16;
7212: my $symbseed=numval2($symb);
7213: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
7214: my $CODEseed=numval(&getCODE());
7215: my $courseseed=unpack("%32S*",$courseid.' ');
7216: my $num1=$symbseed+$CODEchck;
7217: my $num2=$CODEseed+$courseseed+$symbchck;
7218: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
7219: #&logthis("rndseed :$num1:$num2:$symb");
7220: if ($_64bit) { $num1=(($num1<<32)>>32); }
7221: if ($_64bit) { $num2=(($num2<<32)>>32); }
7222: return "$num1:$num2";
7223: }
7224: }
7225:
7226: sub rndseed_CODE_64bit4 {
7227: my ($symb,$courseid,$domain,$username)=@_;
7228: {
7229: use integer;
7230: my $symbchck=unpack("%32S*",$symb.' ') << 16;
7231: my $symbseed=numval3($symb);
7232: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
7233: my $CODEseed=numval3(&getCODE());
7234: my $courseseed=unpack("%32S*",$courseid.' ');
7235: my $num1=$symbseed+$CODEchck;
7236: my $num2=$CODEseed+$courseseed+$symbchck;
7237: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
7238: #&logthis("rndseed :$num1:$num2:$symb");
7239: if ($_64bit) { $num1=(($num1<<32)>>32); }
7240: if ($_64bit) { $num2=(($num2<<32)>>32); }
7241: return "$num1:$num2";
7242: }
7243: }
7244:
7245: sub rndseed_CODE_64bit5 {
7246: my ($symb,$courseid,$domain,$username)=@_;
7247: my $code = &getCODE();
7248: my ($num1,$num2)=&digest("$symb,$courseid,$code");
7249: return "$num1:$num2";
7250: }
7251:
7252: sub setup_random_from_rndseed {
7253: my ($rndseed)=@_;
7254: if ($rndseed =~/([,:])/) {
7255: my ($num1,$num2)=split(/[,:]/,$rndseed);
7256: &Math::Random::random_set_seed(abs($num1),abs($num2));
7257: } else {
7258: &Math::Random::random_set_seed_from_phrase($rndseed);
7259: }
7260: }
7261:
7262: sub latest_receipt_algorithm_id {
7263: return 'receipt3';
7264: }
7265:
7266: sub recunique {
7267: my $fucourseid=shift;
7268: my $unique;
7269: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
7270: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
7271: $unique=$env{"course.$fucourseid.internal.encseed"};
7272: } else {
7273: $unique=$perlvar{'lonReceipt'};
7274: }
7275: return unpack("%32C*",$unique);
7276: }
7277:
7278: sub recprefix {
7279: my $fucourseid=shift;
7280: my $prefix;
7281: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
7282: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
7283: $prefix=$env{"course.$fucourseid.internal.encpref"};
7284: } else {
7285: $prefix=$perlvar{'lonHostID'};
7286: }
7287: return unpack("%32C*",$prefix);
7288: }
7289:
7290: sub ireceipt {
7291: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
7292:
7293: my $return =&recprefix($fucourseid).'-';
7294:
7295: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
7296: $env{'request.state'} eq 'construct') {
7297: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
7298: return $return;
7299: }
7300:
7301: my $cuname=unpack("%32C*",$funame);
7302: my $cudom=unpack("%32C*",$fudom);
7303: my $cucourseid=unpack("%32C*",$fucourseid);
7304: my $cusymb=unpack("%32C*",$fusymb);
7305: my $cunique=&recunique($fucourseid);
7306: my $cpart=unpack("%32S*",$part);
7307: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
7308:
7309: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
7310:
7311: $return.= ($cunique%$cuname+
7312: $cunique%$cudom+
7313: $cusymb%$cuname+
7314: $cusymb%$cudom+
7315: $cucourseid%$cuname+
7316: $cucourseid%$cudom+
7317: $cpart%$cuname+
7318: $cpart%$cudom);
7319: } else {
7320: $return.= ($cunique%$cuname+
7321: $cunique%$cudom+
7322: $cusymb%$cuname+
7323: $cusymb%$cudom+
7324: $cucourseid%$cuname+
7325: $cucourseid%$cudom);
7326: }
7327: return $return;
7328: }
7329:
7330: sub receipt {
7331: my ($part)=@_;
7332: my ($symb,$courseid,$domain,$name) = &whichuser();
7333: return &ireceipt($name,$domain,$courseid,$symb,$part);
7334: }
7335:
7336: sub whichuser {
7337: my ($passedsymb)=@_;
7338: my ($symb,$courseid,$domain,$name,$publicuser);
7339: if (defined($env{'form.grade_symb'})) {
7340: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
7341: my $allowed=&allowed('vgr',$tmp_courseid);
7342: if (!$allowed &&
7343: exists($env{'request.course.sec'}) &&
7344: $env{'request.course.sec'} !~ /^\s*$/) {
7345: $allowed=&allowed('vgr',$tmp_courseid.
7346: '/'.$env{'request.course.sec'});
7347: }
7348: if ($allowed) {
7349: ($symb)=&get_env_multiple('form.grade_symb');
7350: $courseid=$tmp_courseid;
7351: ($domain)=&get_env_multiple('form.grade_domain');
7352: ($name)=&get_env_multiple('form.grade_username');
7353: return ($symb,$courseid,$domain,$name,$publicuser);
7354: }
7355: }
7356: if (!$passedsymb) {
7357: $symb=&symbread();
7358: } else {
7359: $symb=$passedsymb;
7360: }
7361: $courseid=$env{'request.course.id'};
7362: $domain=$env{'user.domain'};
7363: $name=$env{'user.name'};
7364: if ($name eq 'public' && $domain eq 'public') {
7365: if (!defined($env{'form.username'})) {
7366: $env{'form.username'}.=time.rand(10000000);
7367: }
7368: $name.=$env{'form.username'};
7369: }
7370: return ($symb,$courseid,$domain,$name,$publicuser);
7371:
7372: }
7373:
7374: # ------------------------------------------------------------ Serves up a file
7375: # returns either the contents of the file or
7376: # -1 if the file doesn't exist
7377: #
7378: # if the target is a file that was uploaded via DOCS,
7379: # a check will be made to see if a current copy exists on the local server,
7380: # if it does this will be served, otherwise a copy will be retrieved from
7381: # the home server for the course and stored in /home/httpd/html/userfiles on
7382: # the local server.
7383:
7384: sub getfile {
7385: my ($file) = @_;
7386: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
7387: &repcopy($file);
7388: return &readfile($file);
7389: }
7390:
7391: sub repcopy_userfile {
7392: my ($file)=@_;
7393: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
7394: if ($file =~ m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
7395: my ($cdom,$cnum,$filename) =
7396: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
7397: my $uri="/uploaded/$cdom/$cnum/$filename";
7398: if (-e "$file") {
7399: # we already have a local copy, check it out
7400: my @fileinfo = stat($file);
7401: my $rtncode;
7402: my $info;
7403: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
7404: if ($lwpresp ne 'ok') {
7405: # there is no such file anymore, even though we had a local copy
7406: if ($rtncode eq '404') {
7407: unlink($file);
7408: }
7409: return -1;
7410: }
7411: if ($info < $fileinfo[9]) {
7412: # nice, the file we have is up-to-date, just say okay
7413: return 'ok';
7414: } else {
7415: # the file is outdated, get rid of it
7416: unlink($file);
7417: }
7418: }
7419: # one way or the other, at this point, we don't have the file
7420: # construct the correct path for the file
7421: my @parts = ($cdom,$cnum);
7422: if ($filename =~ m|^(.+)/[^/]+$|) {
7423: push @parts, split(/\//,$1);
7424: }
7425: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
7426: foreach my $part (@parts) {
7427: $path .= '/'.$part;
7428: if (!-e $path) {
7429: mkdir($path,0770);
7430: }
7431: }
7432: # now the path exists for sure
7433: # get a user agent
7434: my $ua=new LWP::UserAgent;
7435: my $transferfile=$file.'.in.transfer';
7436: # FIXME: this should flock
7437: if (-e $transferfile) { return 'ok'; }
7438: my $request;
7439: $uri=~s/^\///;
7440: $request=new HTTP::Request('GET','http://'.&hostname(&homeserver($cnum,$cdom)).'/raw/'.$uri);
7441: my $response=$ua->request($request,$transferfile);
7442: # did it work?
7443: if ($response->is_error()) {
7444: unlink($transferfile);
7445: &logthis("Userfile repcopy failed for $uri");
7446: return -1;
7447: }
7448: # worked, rename the transfer file
7449: rename($transferfile,$file);
7450: return 'ok';
7451: }
7452:
7453: sub tokenwrapper {
7454: my $uri=shift;
7455: $uri=~s|^http\://([^/]+)||;
7456: $uri=~s|^/||;
7457: $env{'user.environment'}=~/\/([^\/]+)\.id/;
7458: my $token=$1;
7459: my (undef,$udom,$uname,$file)=split('/',$uri,4);
7460: if ($udom && $uname && $file) {
7461: $file=~s|(\?\.*)*$||;
7462: &appenv("userfile.$udom/$uname/$file" => $env{'request.course.id'});
7463: return 'http://'.&hostname(&homeserver($uname,$udom)).'/'.$uri.
7464: (($uri=~/\?/)?'&':'?').'token='.$token.
7465: '&tokenissued='.$perlvar{'lonHostID'};
7466: } else {
7467: return '/adm/notfound.html';
7468: }
7469: }
7470:
7471: # call with reqtype HEAD: get last modification time
7472: # call with reqtype GET: get the file contents
7473: # Do not call this with reqtype GET for large files! It loads everything into memory
7474: #
7475: sub getuploaded {
7476: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
7477: $uri=~s/^\///;
7478: $uri = 'http://'.&hostname(&homeserver($cnum,$cdom)).'/raw/'.$uri;
7479: my $ua=new LWP::UserAgent;
7480: my $request=new HTTP::Request($reqtype,$uri);
7481: my $response=$ua->request($request);
7482: $$rtncode = $response->code;
7483: if (! $response->is_success()) {
7484: return 'failed';
7485: }
7486: if ($reqtype eq 'HEAD') {
7487: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
7488: } elsif ($reqtype eq 'GET') {
7489: $$info = $response->content;
7490: }
7491: return 'ok';
7492: }
7493:
7494: sub readfile {
7495: my $file = shift;
7496: if ( (! -e $file ) || ($file eq '') ) { return -1; };
7497: my $fh;
7498: open($fh,"<$file");
7499: my $a='';
7500: while (my $line = <$fh>) { $a .= $line; }
7501: return $a;
7502: }
7503:
7504: sub filelocation {
7505: my ($dir,$file) = @_;
7506: my $location;
7507: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
7508:
7509: if ($file =~ m-^/adm/-) {
7510: $file=~s-^/adm/wrapper/-/-;
7511: $file=~s-^/adm/coursedocs/showdoc/-/-;
7512: }
7513: if ($file=~m:^/~:) { # is a contruction space reference
7514: $location = $file;
7515: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
7516: } elsif ($file=~m{^/home/$match_username/public_html/}) {
7517: # is a correct contruction space reference
7518: $location = $file;
7519: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
7520: my ($udom,$uname,$filename)=
7521: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
7522: my $home=&homeserver($uname,$udom);
7523: my $is_me=0;
7524: my @ids=¤t_machine_ids();
7525: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
7526: if ($is_me) {
7527: $location=&propath($udom,$uname).
7528: '/userfiles/'.$filename;
7529: } else {
7530: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
7531: $udom.'/'.$uname.'/'.$filename;
7532: }
7533: } else {
7534: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
7535: $file=~s:^/res/:/:;
7536: if ( !( $file =~ m:^/:) ) {
7537: $location = $dir. '/'.$file;
7538: } else {
7539: $location = '/home/httpd/html/res'.$file;
7540: }
7541: }
7542: $location=~s://+:/:g; # remove duplicate /
7543: while ($location=~m:/\.\./:) {$location=~ s:/[^/]+/\.\./:/:g;} #remove dir/..
7544: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
7545: return $location;
7546: }
7547:
7548: sub hreflocation {
7549: my ($dir,$file)=@_;
7550: unless (($file=~m-^http://-i) || ($file=~m-^/-)) {
7551: $file=filelocation($dir,$file);
7552: } elsif ($file=~m-^/adm/-) {
7553: $file=~s-^/adm/wrapper/-/-;
7554: $file=~s-^/adm/coursedocs/showdoc/-/-;
7555: }
7556: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
7557: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
7558: } elsif ($file=~m-/home/($match_username)/public_html/-) {
7559: $file=~s-^/home/($match_username)/public_html/-/~$1/-;
7560: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
7561: $file=~s-^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/
7562: -/uploaded/$1/$2/-x;
7563: }
7564: return $file;
7565: }
7566:
7567: sub current_machine_domains {
7568: return &machine_domains(&hostname($perlvar{'lonHostID'}));
7569: }
7570:
7571: sub machine_domains {
7572: my ($hostname) = @_;
7573: my @domains;
7574: my %hostname = &all_hostnames();
7575: while( my($id, $name) = each(%hostname)) {
7576: # &logthis("-$id-$name-$hostname-");
7577: if ($hostname eq $name) {
7578: push(@domains,&host_domain($id));
7579: }
7580: }
7581: return @domains;
7582: }
7583:
7584: sub current_machine_ids {
7585: return &machine_ids(&hostname($perlvar{'lonHostID'}));
7586: }
7587:
7588: sub machine_ids {
7589: my ($hostname) = @_;
7590: $hostname ||= &hostname($perlvar{'lonHostID'});
7591: my @ids;
7592: my %hostname = &all_hostnames();
7593: while( my($id, $name) = each(%hostname)) {
7594: # &logthis("-$id-$name-$hostname-");
7595: if ($hostname eq $name) {
7596: push(@ids,$id);
7597: }
7598: }
7599: return @ids;
7600: }
7601:
7602: sub additional_machine_domains {
7603: my @domains;
7604: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
7605: while( my $line = <$fh>) {
7606: $line =~ s/\s//g;
7607: push(@domains,$line);
7608: }
7609: return @domains;
7610: }
7611:
7612: sub default_login_domain {
7613: my $domain = $perlvar{'lonDefDomain'};
7614: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
7615: foreach my $posdom (¤t_machine_domains(),
7616: &additional_machine_domains()) {
7617: if (lc($posdom) eq lc($testdomain)) {
7618: $domain=$posdom;
7619: last;
7620: }
7621: }
7622: return $domain;
7623: }
7624:
7625: # ------------------------------------------------------------- Declutters URLs
7626:
7627: sub declutter {
7628: my $thisfn=shift;
7629: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
7630: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
7631: $thisfn=~s/^\///;
7632: $thisfn=~s|^adm/wrapper/||;
7633: $thisfn=~s|^adm/coursedocs/showdoc/||;
7634: $thisfn=~s/^res\///;
7635: $thisfn=~s/\?.+$//;
7636: return $thisfn;
7637: }
7638:
7639: # ------------------------------------------------------------- Clutter up URLs
7640:
7641: sub clutter {
7642: my $thisfn='/'.&declutter(shift);
7643: unless ($thisfn=~/^\/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)\//) {
7644: $thisfn='/res'.$thisfn;
7645: }
7646: if ($thisfn !~m|/adm|) {
7647: if ($thisfn =~ m|/ext/|) {
7648: $thisfn='/adm/wrapper'.$thisfn;
7649: } else {
7650: my ($ext) = ($thisfn =~ /\.(\w+)$/);
7651: my $embstyle=&Apache::loncommon::fileembstyle($ext);
7652: if ($embstyle eq 'ssi'
7653: || ($embstyle eq 'hdn')
7654: || ($embstyle eq 'rat')
7655: || ($embstyle eq 'prv')
7656: || ($embstyle eq 'ign')) {
7657: #do nothing with these
7658: } elsif (($embstyle eq 'img')
7659: || ($embstyle eq 'emb')
7660: || ($embstyle eq 'wrp')) {
7661: $thisfn='/adm/wrapper'.$thisfn;
7662: } elsif ($embstyle eq 'unk'
7663: && $thisfn!~/\.(sequence|page)$/) {
7664: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
7665: } else {
7666: # &logthis("Got a blank emb style");
7667: }
7668: }
7669: }
7670: return $thisfn;
7671: }
7672:
7673: sub clutter_with_no_wrapper {
7674: my $uri = &clutter(shift);
7675: if ($uri =~ m-^/adm/-) {
7676: $uri =~ s-^/adm/wrapper/-/-;
7677: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
7678: }
7679: return $uri;
7680: }
7681:
7682: sub freeze_escape {
7683: my ($value)=@_;
7684: if (ref($value)) {
7685: $value=&nfreeze($value);
7686: return '__FROZEN__'.&escape($value);
7687: }
7688: return &escape($value);
7689: }
7690:
7691:
7692: sub thaw_unescape {
7693: my ($value)=@_;
7694: if ($value =~ /^__FROZEN__/) {
7695: substr($value,0,10,undef);
7696: $value=&unescape($value);
7697: return &thaw($value);
7698: }
7699: return &unescape($value);
7700: }
7701:
7702: sub correct_line_ends {
7703: my ($result)=@_;
7704: $$result =~s/\r\n/\n/mg;
7705: $$result =~s/\r/\n/mg;
7706: }
7707: # ================================================================ Main Program
7708:
7709: sub goodbye {
7710: &logthis("Starting Shut down");
7711: #not converted to using infrastruture and probably shouldn't be
7712: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
7713: #converted
7714: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
7715: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
7716: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
7717: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
7718: #1.1 only
7719: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
7720: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
7721: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
7722: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
7723: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
7724: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
7725: &logthis(sprintf("%-20s is %s",'hits',$hits));
7726: &flushcourselogs();
7727: &logthis("Shutting down");
7728: }
7729:
7730: sub get_dns {
7731: my ($url,$func,$ignore_cache) = @_;
7732: if (!$ignore_cache) {
7733: my ($content,$cached)=
7734: &Apache::lonnet::is_cached_new('dns',$url);
7735: if ($cached) {
7736: &$func($content);
7737: return;
7738: }
7739: }
7740:
7741: my %alldns;
7742: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
7743: foreach my $dns (<$config>) {
7744: next if ($dns !~ /^\^(\S*)/x);
7745: $alldns{$1} = 1;
7746: }
7747: while (%alldns) {
7748: my ($dns) = keys(%alldns);
7749: delete($alldns{$dns});
7750: my $ua=new LWP::UserAgent;
7751: my $request=new HTTP::Request('GET',"http://$dns$url");
7752: my $response=$ua->request($request);
7753: next if ($response->is_error());
7754: my @content = split("\n",$response->content);
7755: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
7756: &$func(\@content);
7757: return;
7758: }
7759: close($config);
7760: my $which = (split('/',$url))[3];
7761: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
7762: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
7763: my @content = <$config>;
7764: &$func(\@content);
7765: return;
7766: }
7767: # ------------------------------------------------------------ Read domain file
7768: {
7769: my $loaded;
7770: my %domain;
7771:
7772: sub parse_domain_tab {
7773: my ($lines) = @_;
7774: foreach my $line (@$lines) {
7775: next if ($line =~ /^(\#|\s*$ )/x);
7776:
7777: chomp($line);
7778: my ($name,@elements) = split(/:/,$line,9);
7779: my %this_domain;
7780: foreach my $field ('description', 'auth_def', 'auth_arg_def',
7781: 'lang_def', 'city', 'longi', 'lati',
7782: 'primary') {
7783: $this_domain{$field} = shift(@elements);
7784: }
7785: $domain{$name} = \%this_domain;
7786: }
7787: }
7788:
7789: sub reset_domain_info {
7790: undef($loaded);
7791: undef(%domain);
7792: }
7793:
7794: sub load_domain_tab {
7795: my ($ignore_cache) = @_;
7796: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
7797: my $fh;
7798: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
7799: my @lines = <$fh>;
7800: &parse_domain_tab(\@lines);
7801: }
7802: close($fh);
7803: $loaded = 1;
7804: }
7805:
7806: sub domain {
7807: &load_domain_tab() if (!$loaded);
7808:
7809: my ($name,$what) = @_;
7810: return if ( !exists($domain{$name}) );
7811:
7812: if (!$what) {
7813: return $domain{$name}{'description'};
7814: }
7815: return $domain{$name}{$what};
7816: }
7817: }
7818:
7819:
7820: # ------------------------------------------------------------- Read hosts file
7821: {
7822: my %hostname;
7823: my %hostdom;
7824: my %libserv;
7825: my $loaded;
7826:
7827: sub parse_hosts_tab {
7828: my ($file) = @_;
7829: foreach my $configline (@$file) {
7830: next if ($configline =~ /^(\#|\s*$ )/x);
7831: next if ($configline =~ /^\^/);
7832: chomp($configline);
7833: my ($id,$domain,$role,$name)=split(/:/,$configline);
7834: $name=~s/\s//g;
7835: if ($id && $domain && $role && $name) {
7836: $hostname{$id}=$name;
7837: $hostdom{$id}=$domain;
7838: if ($role eq 'library') { $libserv{$id}=$name; }
7839: }
7840: }
7841: }
7842:
7843: sub reset_hosts_info {
7844: &reset_domain_info();
7845: &reset_hosts_ip_info();
7846: undef(%hostname);
7847: undef(%hostdom);
7848: undef(%libserv);
7849: undef($loaded);
7850: }
7851:
7852: sub load_hosts_tab {
7853: my ($ignore_cache) = @_;
7854: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
7855: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
7856: my @config = <$config>;
7857: &parse_hosts_tab(\@config);
7858: close($config);
7859: $loaded=1;
7860: }
7861:
7862: sub hostname {
7863: &load_hosts_tab() if (!$loaded);
7864:
7865: my ($lonid) = @_;
7866: return $hostname{$lonid};
7867: }
7868:
7869: sub all_hostnames {
7870: &load_hosts_tab() if (!$loaded);
7871:
7872: return %hostname;
7873: }
7874:
7875: sub is_library {
7876: &load_hosts_tab() if (!$loaded);
7877:
7878: return exists($libserv{$_[0]});
7879: }
7880:
7881: sub all_library {
7882: &load_hosts_tab() if (!$loaded);
7883:
7884: return %libserv;
7885: }
7886:
7887: sub get_servers {
7888: &load_hosts_tab() if (!$loaded);
7889:
7890: my ($domain,$type) = @_;
7891: my %possible_hosts = ($type eq 'library') ? %libserv
7892: : %hostname;
7893: my %result;
7894: if (ref($domain) eq 'ARRAY') {
7895: while ( my ($host,$hostname) = each(%possible_hosts)) {
7896: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
7897: $result{$host} = $hostname;
7898: }
7899: }
7900: } else {
7901: while ( my ($host,$hostname) = each(%possible_hosts)) {
7902: if ($hostdom{$host} eq $domain) {
7903: $result{$host} = $hostname;
7904: }
7905: }
7906: }
7907: return %result;
7908: }
7909:
7910: sub host_domain {
7911: &load_hosts_tab() if (!$loaded);
7912:
7913: my ($lonid) = @_;
7914: return $hostdom{$lonid};
7915: }
7916:
7917: sub all_domains {
7918: &load_hosts_tab() if (!$loaded);
7919:
7920: my %seen;
7921: my @uniq = grep(!$seen{$_}++, values(%hostdom));
7922: return @uniq;
7923: }
7924: }
7925:
7926: {
7927: my %iphost;
7928: my %name_to_ip;
7929: my %lonid_to_ip;
7930:
7931: my %valid_ip;
7932: sub valid_ip {
7933: my ($ip) = @_;
7934: if (exists($iphost{$ip}) || exists($valid_ip{$ip})) {
7935: return 1;
7936: }
7937: my $name = gethostbyip($ip);
7938: my $lonid = &hostname($name);
7939: if (defined($lonid)) {
7940: $valid_ip{$ip} = $lonid;
7941: return 1;
7942: }
7943: my %iphosts = &get_iphost();
7944: if (ref($iphost{$ip})) {
7945: return 1;
7946: }
7947: }
7948:
7949: sub get_hosts_from_ip {
7950: my ($ip) = @_;
7951: my %iphosts = &get_iphost();
7952: if (ref($iphosts{$ip})) {
7953: return @{$iphosts{$ip}};
7954: }
7955: return;
7956: }
7957:
7958: sub reset_hosts_ip_info {
7959: undef(%iphost);
7960: undef(%name_to_ip);
7961: undef(%lonid_to_ip);
7962: }
7963:
7964: sub get_host_ip {
7965: my ($lonid) = @_;
7966: if (exists($lonid_to_ip{$lonid})) {
7967: return $lonid_to_ip{$lonid};
7968: }
7969: my $name=&hostname($lonid);
7970: my $ip = gethostbyname($name);
7971: return if (!$ip || length($ip) ne 4);
7972: $ip=inet_ntoa($ip);
7973: $name_to_ip{$name} = $ip;
7974: $lonid_to_ip{$lonid} = $ip;
7975: return $ip;
7976: }
7977:
7978: sub get_iphost {
7979: my ($ignore_cache) = @_;
7980: if (!$ignore_cache) {
7981: if (%iphost) {
7982: return %iphost;
7983: }
7984: my ($ip_info,$cached)=
7985: &Apache::lonnet::is_cached_new('iphost','iphost');
7986: if ($cached) {
7987: %iphost = %{$ip_info->[0]};
7988: %name_to_ip = %{$ip_info->[1]};
7989: %lonid_to_ip = %{$ip_info->[2]};
7990: return %iphost;
7991: }
7992: }
7993: my %hostname = &all_hostnames();
7994: foreach my $id (keys(%hostname)) {
7995: my $name=&hostname($id);
7996: my $ip;
7997: if (!exists($name_to_ip{$name})) {
7998: $ip = gethostbyname($name);
7999: if (!$ip || length($ip) ne 4) {
8000: &logthis("Skipping host $id name $name no IP found");
8001: next;
8002: }
8003: $ip=inet_ntoa($ip);
8004: $name_to_ip{$name} = $ip;
8005: } else {
8006: $ip = $name_to_ip{$name};
8007: }
8008: $lonid_to_ip{$id} = $ip;
8009: push(@{$iphost{$ip}},$id);
8010: }
8011: &Apache::lonnet::do_cache_new('iphost','iphost',
8012: [\%iphost,\%name_to_ip,\%lonid_to_ip],
8013: 24*60*60);
8014:
8015: return %iphost;
8016: }
8017: }
8018:
8019: BEGIN {
8020:
8021: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
8022: unless ($readit) {
8023: {
8024: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
8025: %perlvar = (%perlvar,%{$configvars});
8026: }
8027:
8028:
8029: # ------------------------------------------------------ Read spare server file
8030: {
8031: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
8032:
8033: while (my $configline=<$config>) {
8034: chomp($configline);
8035: if ($configline) {
8036: my ($host,$type) = split(':',$configline,2);
8037: if (!defined($type) || $type eq '') { $type = 'default' };
8038: push(@{ $spareid{$type} }, $host);
8039: }
8040: }
8041: close($config);
8042: }
8043: # ------------------------------------------------------------ Read permissions
8044: {
8045: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
8046:
8047: while (my $configline=<$config>) {
8048: chomp($configline);
8049: if ($configline) {
8050: my ($role,$perm)=split(/ /,$configline);
8051: if ($perm ne '') { $pr{$role}=$perm; }
8052: }
8053: }
8054: close($config);
8055: }
8056:
8057: # -------------------------------------------- Read plain texts for permissions
8058: {
8059: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
8060:
8061: while (my $configline=<$config>) {
8062: chomp($configline);
8063: if ($configline) {
8064: my ($short,@plain)=split(/:/,$configline);
8065: %{$prp{$short}} = ();
8066: if (@plain > 0) {
8067: $prp{$short}{'std'} = $plain[0];
8068: for (my $i=1; $i<@plain; $i++) {
8069: $prp{$short}{'alt'.$i} = $plain[$i];
8070: }
8071: }
8072: }
8073: }
8074: close($config);
8075: }
8076:
8077: # ---------------------------------------------------------- Read package table
8078: {
8079: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
8080:
8081: while (my $configline=<$config>) {
8082: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
8083: chomp($configline);
8084: my ($short,$plain)=split(/:/,$configline);
8085: my ($pack,$name)=split(/\&/,$short);
8086: if ($plain ne '') {
8087: $packagetab{$pack.'&'.$name.'&name'}=$name;
8088: $packagetab{$short}=$plain;
8089: }
8090: }
8091: close($config);
8092: }
8093:
8094: # ------------- set up temporary directory
8095: {
8096: $tmpdir = $perlvar{'lonDaemons'}.'/tmp/';
8097:
8098: }
8099:
8100: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
8101: 'compress_threshold'=> 20_000,
8102: });
8103:
8104: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
8105: $dumpcount=0;
8106:
8107: &logtouch();
8108: &logthis('<font color="yellow">INFO: Read configuration</font>');
8109: $readit=1;
8110: {
8111: use integer;
8112: my $test=(2**32)+1;
8113: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
8114: &logthis(" Detected 64bit platform ($_64bit)");
8115: }
8116: }
8117: }
8118:
8119: 1;
8120: __END__
8121:
8122: =pod
8123:
8124: =head1 NAME
8125:
8126: Apache::lonnet - Subroutines to ask questions about things in the network.
8127:
8128: =head1 SYNOPSIS
8129:
8130: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
8131:
8132: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
8133:
8134: Common parameters:
8135:
8136: =over 4
8137:
8138: =item *
8139:
8140: $uname : an internal username (if $cname expecting a course Id specifically)
8141:
8142: =item *
8143:
8144: $udom : a domain (if $cdom expecting a course's domain specifically)
8145:
8146: =item *
8147:
8148: $symb : a resource instance identifier
8149:
8150: =item *
8151:
8152: $namespace : the name of a .db file that contains the data needed or
8153: being set.
8154:
8155: =back
8156:
8157: =head1 OVERVIEW
8158:
8159: lonnet provides subroutines which interact with the
8160: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
8161: about classes, users, and resources.
8162:
8163: For many of these objects you can also use this to store data about
8164: them or modify them in various ways.
8165:
8166: =head2 Symbs
8167:
8168: To identify a specific instance of a resource, LON-CAPA uses symbols
8169: or "symbs"X<symb>. These identifiers are built from the URL of the
8170: map, the resource number of the resource in the map, and the URL of
8171: the resource itself. The latter is somewhat redundant, but might help
8172: if maps change.
8173:
8174: An example is
8175:
8176: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
8177:
8178: The respective map entry is
8179:
8180: <resource id="19" src="/res/msu/korte/tests/part12.problem"
8181: title="Problem 2">
8182: </resource>
8183:
8184: Symbs are used by the random number generator, as well as to store and
8185: restore data specific to a certain instance of for example a problem.
8186:
8187: =head2 Storing And Retrieving Data
8188:
8189: X<store()>X<cstore()>X<restore()>Three of the most important functions
8190: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
8191: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
8192: is is the non-critical message twin of cstore. These functions are for
8193: handlers to store a perl hash to a user's permanent data space in an
8194: easy manner, and to retrieve it again on another call. It is expected
8195: that a handler would use this once at the beginning to retrieve data,
8196: and then again once at the end to send only the new data back.
8197:
8198: The data is stored in the user's data directory on the user's
8199: homeserver under the ID of the course.
8200:
8201: The hash that is returned by restore will have all of the previous
8202: value for all of the elements of the hash.
8203:
8204: Example:
8205:
8206: #creating a hash
8207: my %hash;
8208: $hash{'foo'}='bar';
8209:
8210: #storing it
8211: &Apache::lonnet::cstore(\%hash);
8212:
8213: #changing a value
8214: $hash{'foo'}='notbar';
8215:
8216: #adding a new value
8217: $hash{'bar'}='foo';
8218: &Apache::lonnet::cstore(\%hash);
8219:
8220: #retrieving the hash
8221: my %history=&Apache::lonnet::restore();
8222:
8223: #print the hash
8224: foreach my $key (sort(keys(%history))) {
8225: print("\%history{$key} = $history{$key}");
8226: }
8227:
8228: Will print out:
8229:
8230: %history{1:foo} = bar
8231: %history{1:keys} = foo:timestamp
8232: %history{1:timestamp} = 990455579
8233: %history{2:bar} = foo
8234: %history{2:foo} = notbar
8235: %history{2:keys} = foo:bar:timestamp
8236: %history{2:timestamp} = 990455580
8237: %history{bar} = foo
8238: %history{foo} = notbar
8239: %history{timestamp} = 990455580
8240: %history{version} = 2
8241:
8242: Note that the special hash entries C<keys>, C<version> and
8243: C<timestamp> were added to the hash. C<version> will be equal to the
8244: total number of versions of the data that have been stored. The
8245: C<timestamp> attribute will be the UNIX time the hash was
8246: stored. C<keys> is available in every historical section to list which
8247: keys were added or changed at a specific historical revision of a
8248: hash.
8249:
8250: B<Warning>: do not store the hash that restore returns directly. This
8251: will cause a mess since it will restore the historical keys as if the
8252: were new keys. I.E. 1:foo will become 1:1:foo etc.
8253:
8254: Calling convention:
8255:
8256: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
8257: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
8258:
8259: For more detailed information, see lonnet specific documentation.
8260:
8261: =head1 RETURN MESSAGES
8262:
8263: =over 4
8264:
8265: =item * B<con_lost>: unable to contact remote host
8266:
8267: =item * B<con_delayed>: unable to contact remote host, message will be delivered
8268: when the connection is brought back up
8269:
8270: =item * B<con_failed>: unable to contact remote host and unable to save message
8271: for later delivery
8272:
8273: =item * B<error:>: an error a occured, a description of the error follows the :
8274:
8275: =item * B<no_such_host>: unable to fund a host associated with the user/domain
8276: that was requested
8277:
8278: =back
8279:
8280: =head1 PUBLIC SUBROUTINES
8281:
8282: =head2 Session Environment Functions
8283:
8284: =over 4
8285:
8286: =item *
8287: X<appenv()>
8288: B<appenv(%hash)>: the value of %hash is written to
8289: the user envirnoment file, and will be restored for each access this
8290: user makes during this session, also modifies the %env for the current
8291: process
8292:
8293: =item *
8294: X<delenv()>
8295: B<delenv($regexp)>: removes all items from the session
8296: environment file that matches the regular expression in $regexp. The
8297: values are also delted from the current processes %env.
8298:
8299: =item * get_env_multiple($name)
8300:
8301: gets $name from the %env hash, it seemlessly handles the cases where multiple
8302: values may be defined and end up as an array ref.
8303:
8304: returns an array of values
8305:
8306: =back
8307:
8308: =head2 User Information
8309:
8310: =over 4
8311:
8312: =item *
8313: X<queryauthenticate()>
8314: B<queryauthenticate($uname,$udom)>: try to determine user's current
8315: authentication scheme
8316:
8317: =item *
8318: X<authenticate()>
8319: B<authenticate($uname,$upass,$udom)>: try to
8320: authenticate user from domain's lib servers (first use the current
8321: one). C<$upass> should be the users password.
8322:
8323: =item *
8324: X<homeserver()>
8325: B<homeserver($uname,$udom)>: find the server which has
8326: the user's directory and files (there must be only one), this caches
8327: the answer, and also caches if there is a borken connection.
8328:
8329: =item *
8330: X<idget()>
8331: B<idget($udom,@ids)>: find the usernames behind a list of IDs
8332: (IDs are a unique resource in a domain, there must be only 1 ID per
8333: username, and only 1 username per ID in a specific domain) (returns
8334: hash: id=>name,id=>name)
8335:
8336: =item *
8337: X<idrget()>
8338: B<idrget($udom,@unames)>: find the IDs behind a list of
8339: usernames (returns hash: name=>id,name=>id)
8340:
8341: =item *
8342: X<idput()>
8343: B<idput($udom,%ids)>: store away a list of names and associated IDs
8344:
8345: =item *
8346: X<rolesinit()>
8347: B<rolesinit($udom,$username,$authhost)>: get user privileges
8348:
8349: =item *
8350: X<getsection()>
8351: B<getsection($udom,$uname,$cname)>: finds the section of student in the
8352: course $cname, return section name/number or '' for "not in course"
8353: and '-1' for "no section"
8354:
8355: =item *
8356: X<userenvironment()>
8357: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
8358: passed in @what from the requested user's environment, returns a hash
8359:
8360: =item *
8361: X<userlog_query()>
8362: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
8363: activity.log file. %filters defines filters applied when parsing the
8364: log file. These can be start or end timestamps, or the type of action
8365: - log to look for Login or Logout events, check for Checkin or
8366: Checkout, role for role selection. The response is in the form
8367: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
8368: escaped strings of the action recorded in the activity.log file.
8369:
8370: =back
8371:
8372: =head2 User Roles
8373:
8374: =over 4
8375:
8376: =item *
8377:
8378: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
8379: F: full access
8380: U,I,K: authentication modes (cxx only)
8381: '': forbidden
8382: 1: user needs to choose course
8383: 2: browse allowed
8384: A: passphrase authentication needed
8385:
8386: =item *
8387:
8388: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
8389: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
8390: and course level
8391:
8392: =item *
8393:
8394: plaintext($short) : return value in %prp hash (rolesplain.tab); plain text
8395: explanation of a user role term
8396:
8397: =item *
8398:
8399: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms) :
8400: All arguments are optional. Returns a hash of a roles, either for
8401: co-author/assistant author roles for a user's Construction Space
8402: (default), or if $context is 'user', roles for the user himself,
8403: In the hash, keys are set to colon-sparated $uname,$udom,and $role,
8404: and value is set to colon-separated start and end times for the role.
8405: If no username and domain are specified, will default to current
8406: user/domain. Types, roles, and roledoms are references to arrays,
8407: of role statuses (active, future or previous), roles
8408: (e.g., cc,in, st etc.) and domains of the roles which can be used
8409: to restrict the list of roles reported. If no array ref is
8410: provided for types, will default to return only active roles.
8411:
8412: =back
8413:
8414: =head2 User Modification
8415:
8416: =over 4
8417:
8418: =item *
8419:
8420: assignrole($udom,$uname,$url,$role,$end,$start) : assign role; give a role to a
8421: user for the level given by URL. Optional start and end dates (leave empty
8422: string or zero for "no date")
8423:
8424: =item *
8425:
8426: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
8427: change a users, password, possible return values are: ok,
8428: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
8429: refused
8430:
8431: =item *
8432:
8433: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
8434:
8435: =item *
8436:
8437: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene) :
8438: modify user
8439:
8440: =item *
8441:
8442: modifystudent
8443:
8444: modify a students enrollment and identification information.
8445: The course id is resolved based on the current users environment.
8446: This means the envoking user must be a course coordinator or otherwise
8447: associated with a course.
8448:
8449: This call is essentially a wrapper for lonnet::modifyuser and
8450: lonnet::modify_student_enrollment
8451:
8452: Inputs:
8453:
8454: =over 4
8455:
8456: =item B<$udom> Students loncapa domain
8457:
8458: =item B<$uname> Students loncapa login name
8459:
8460: =item B<$uid> Students id/student number
8461:
8462: =item B<$umode> Students authentication mode
8463:
8464: =item B<$upass> Students password
8465:
8466: =item B<$first> Students first name
8467:
8468: =item B<$middle> Students middle name
8469:
8470: =item B<$last> Students last name
8471:
8472: =item B<$gene> Students generation
8473:
8474: =item B<$usec> Students section in course
8475:
8476: =item B<$end> Unix time of the roles expiration
8477:
8478: =item B<$start> Unix time of the roles start date
8479:
8480: =item B<$forceid> If defined, allow $uid to be changed
8481:
8482: =item B<$desiredhome> server to use as home server for student
8483:
8484: =back
8485:
8486: =item *
8487:
8488: modify_student_enrollment
8489:
8490: Change a students enrollment status in a class. The environment variable
8491: 'role.request.course' must be defined for this function to proceed.
8492:
8493: Inputs:
8494:
8495: =over 4
8496:
8497: =item $udom, students domain
8498:
8499: =item $uname, students name
8500:
8501: =item $uid, students user id
8502:
8503: =item $first, students first name
8504:
8505: =item $middle
8506:
8507: =item $last
8508:
8509: =item $gene
8510:
8511: =item $usec
8512:
8513: =item $end
8514:
8515: =item $start
8516:
8517: =back
8518:
8519:
8520: =item *
8521:
8522: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
8523: custom role; give a custom role to a user for the level given by URL. Specify
8524: name and domain of role author, and role name
8525:
8526: =item *
8527:
8528: revokerole($udom,$uname,$url,$role) : revoke a role for url
8529:
8530: =item *
8531:
8532: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
8533:
8534: =back
8535:
8536: =head2 Course Infomation
8537:
8538: =over 4
8539:
8540: =item *
8541:
8542: coursedescription($courseid) : returns a hash of information about the
8543: specified course id, including all environment settings for the
8544: course, the description of the course will be in the hash under the
8545: key 'description'
8546:
8547: =item *
8548:
8549: resdata($name,$domain,$type,@which) : request for current parameter
8550: setting for a specific $type, where $type is either 'course' or 'user',
8551: @what should be a list of parameters to ask about. This routine caches
8552: answers for 5 minutes.
8553:
8554: =item *
8555:
8556: get_courseresdata($courseid, $domain) : dump the entire course resource
8557: data base, returning a hash that is keyed by the resource name and has
8558: values that are the resource value. I believe that the timestamps and
8559: versions are also returned.
8560:
8561:
8562: =back
8563:
8564: =head2 Course Modification
8565:
8566: =over 4
8567:
8568: =item *
8569:
8570: writecoursepref($courseid,%prefs) : write preferences (environment
8571: database) for a course
8572:
8573: =item *
8574:
8575: createcourse($udom,$description,$url) : make/modify course
8576:
8577: =back
8578:
8579: =head2 Resource Subroutines
8580:
8581: =over 4
8582:
8583: =item *
8584:
8585: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
8586:
8587: =item *
8588:
8589: repcopy($filename) : subscribes to the requested file, and attempts to
8590: replicate from the owning library server, Might return
8591: 'unavailable', 'not_found', 'forbidden', 'ok', or
8592: 'bad_request', also attempts to grab the metadata for the
8593: resource. Expects the local filesystem pathname
8594: (/home/httpd/html/res/....)
8595:
8596: =back
8597:
8598: =head2 Resource Information
8599:
8600: =over 4
8601:
8602: =item *
8603:
8604: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
8605: a vairety of different possible values, $varname should be a request
8606: string, and the other parameters can be used to specify who and what
8607: one is asking about.
8608:
8609: Possible values for $varname are environment.lastname (or other item
8610: from the envirnment hash), user.name (or someother aspect about the
8611: user), resource.0.maxtries (or some other part and parameter of a
8612: resource)
8613:
8614: =item *
8615:
8616: directcondval($number) : get current value of a condition; reads from a state
8617: string
8618:
8619: =item *
8620:
8621: condval($condidx) : value of condition index based on state
8622:
8623: =item *
8624:
8625: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
8626: resource's metadata, $what should be either a specific key, or either
8627: 'keys' (to get a list of possible keys) or 'packages' to get a list of
8628: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
8629:
8630: this function automatically caches all requests
8631:
8632: =item *
8633:
8634: metadata_query($query,$custom,$customshow) : make a metadata query against the
8635: network of library servers; returns file handle of where SQL and regex results
8636: will be stored for query
8637:
8638: =item *
8639:
8640: symbread($filename) : return symbolic list entry (filename argument optional);
8641: returns the data handle
8642:
8643: =item *
8644:
8645: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
8646: a possible symb for the URL in $thisfn, and if is an encryypted
8647: resource that the user accessed using /enc/ returns a 1 on success, 0
8648: on failure, user must be in a course, as it assumes the existance of
8649: the course initial hash, and uses $env('request.course.id'}
8650:
8651:
8652: =item *
8653:
8654: symbclean($symb) : removes versions numbers from a symb, returns the
8655: cleaned symb
8656:
8657: =item *
8658:
8659: is_on_map($uri) : checks if the $uri is somewhere on the current
8660: course map, user must be in a course for it to work.
8661:
8662: =item *
8663:
8664: numval($salt) : return random seed value (addend for rndseed)
8665:
8666: =item *
8667:
8668: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
8669: a random seed, all arguments are optional, if they aren't sent it uses the
8670: environment to derive them. Note: if symb isn't sent and it can't get one
8671: from &symbread it will use the current time as its return value
8672:
8673: =item *
8674:
8675: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
8676: unfakeable, receipt
8677:
8678: =item *
8679:
8680: receipt() : API to ireceipt working off of env values; given out to users
8681:
8682: =item *
8683:
8684: countacc($url) : count the number of accesses to a given URL
8685:
8686: =item *
8687:
8688: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
8689:
8690: =item *
8691:
8692: checkin($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 $tcrsid)
8693:
8694: =item *
8695:
8696: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
8697:
8698: =item *
8699:
8700: devalidate($symb) : devalidate temporary spreadsheet calculations,
8701: forcing spreadsheet to reevaluate the resource scores next time.
8702:
8703: =back
8704:
8705: =head2 Storing/Retreiving Data
8706:
8707: =over 4
8708:
8709: =item *
8710:
8711: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
8712: for this url; hashref needs to be given and should be a \%hashname; the
8713: remaining args aren't required and if they aren't passed or are '' they will
8714: be derived from the env
8715:
8716: =item *
8717:
8718: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
8719: uses critical subroutine
8720:
8721: =item *
8722:
8723: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
8724: all args are optional
8725:
8726: =item *
8727:
8728: dumpstore($namespace,$udom,$uname,$regexp,$range) :
8729: dumps the complete (or key matching regexp) namespace into a hash
8730: ($udom, $uname, $regexp, $range are optional) for a namespace that is
8731: normally &store()ed into
8732:
8733: $range should be either an integer '100' (give me the first 100
8734: matching records)
8735: or be two integers sperated by a - with no spaces
8736: '30-50' (give me the 30th through the 50th matching
8737: records)
8738:
8739:
8740: =item *
8741:
8742: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
8743: replaces a &store() version of data with a replacement set of data
8744: for a particular resource in a namespace passed in the $storehash hash
8745: reference
8746:
8747: =item *
8748:
8749: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
8750: works very similar to store/cstore, but all data is stored in a
8751: temporary location and can be reset using tmpreset, $storehash should
8752: be a hash reference, returns nothing on success
8753:
8754: =item *
8755:
8756: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
8757: similar to restore, but all data is stored in a temporary location and
8758: can be reset using tmpreset. Returns a hash of values on success,
8759: error string otherwise.
8760:
8761: =item *
8762:
8763: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
8764: deltes all keys for $symb form the temporary storage hash.
8765:
8766: =item *
8767:
8768: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
8769: reference filled in from namesp ($udom and $uname are optional)
8770:
8771: =item *
8772:
8773: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
8774: namesp ($udom and $uname are optional)
8775:
8776: =item *
8777:
8778: dump($namespace,$udom,$uname,$regexp,$range) :
8779: dumps the complete (or key matching regexp) namespace into a hash
8780: ($udom, $uname, $regexp, $range are optional)
8781:
8782: $range should be either an integer '100' (give me the first 100
8783: matching records)
8784: or be two integers sperated by a - with no spaces
8785: '30-50' (give me the 30th through the 50th matching
8786: records)
8787: =item *
8788:
8789: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
8790: $store can be a scalar, an array reference, or if the amount to be
8791: incremented is > 1, a hash reference.
8792:
8793: ($udom and $uname are optional)
8794:
8795: =item *
8796:
8797: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
8798: ($udom and $uname are optional)
8799:
8800: =item *
8801:
8802: cput($namespace,$storehash,$udom,$uname) : critical put
8803: ($udom and $uname are optional)
8804:
8805: =item *
8806:
8807: newput($namespace,$storehash,$udom,$uname) :
8808:
8809: Attempts to store the items in the $storehash, but only if they don't
8810: currently exist, if this succeeds you can be certain that you have
8811: successfully created a new key value pair in the $namespace db.
8812:
8813:
8814: Args:
8815: $namespace: name of database to store values to
8816: $storehash: hashref to store to the db
8817: $udom: (optional) domain of user containing the db
8818: $uname: (optional) name of user caontaining the db
8819:
8820: Returns:
8821: 'ok' -> succeeded in storing all keys of $storehash
8822: 'key_exists: <key>' -> failed to anything out of $storehash, as at
8823: least <key> already existed in the db (other
8824: requested keys may also already exist)
8825: 'error: <msg>' -> unable to tie the DB or other erorr occured
8826: 'con_lost' -> unable to contact request server
8827: 'refused' -> action was not allowed by remote machine
8828:
8829:
8830: =item *
8831:
8832: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
8833: reference filled in from namesp (encrypts the return communication)
8834: ($udom and $uname are optional)
8835:
8836: =item *
8837:
8838: log($udom,$name,$home,$message) : write to permanent log for user; use
8839: critical subroutine
8840:
8841: =item *
8842:
8843: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
8844: array reference filled in from namespace found in domain level on either
8845: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
8846:
8847: =item *
8848:
8849: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
8850: domain level either on specified domain server ($uhome) or primary domain
8851: server ($udom and $uhome are optional)
8852:
8853: =back
8854:
8855: =head2 Network Status Functions
8856:
8857: =over 4
8858:
8859: =item *
8860:
8861: dirlist($uri) : return directory list based on URI
8862:
8863: =item *
8864:
8865: spareserver() : find server with least workload from spare.tab
8866:
8867: =back
8868:
8869: =head2 Apache Request
8870:
8871: =over 4
8872:
8873: =item *
8874:
8875: ssi($url,%hash) : server side include, does a complete request cycle on url to
8876: localhost, posts hash
8877:
8878: =back
8879:
8880: =head2 Data to String to Data
8881:
8882: =over 4
8883:
8884: =item *
8885:
8886: hash2str(%hash) : convert a hash into a string complete with escaping and '='
8887: and '&' separators, supports elements that are arrayrefs and hashrefs
8888:
8889: =item *
8890:
8891: hashref2str($hashref) : convert a hashref into a string complete with
8892: escaping and '=' and '&' separators, supports elements that are
8893: arrayrefs and hashrefs
8894:
8895: =item *
8896:
8897: arrayref2str($arrayref) : convert an arrayref into a string complete
8898: with escaping and '&' separators, supports elements that are arrayrefs
8899: and hashrefs
8900:
8901: =item *
8902:
8903: str2hash($string) : convert string to hash using unescaping and
8904: splitting on '=' and '&', supports elements that are arrayrefs and
8905: hashrefs
8906:
8907: =item *
8908:
8909: str2array($string) : convert string to hash using unescaping and
8910: splitting on '&', supports elements that are arrayrefs and hashrefs
8911:
8912: =back
8913:
8914: =head2 Logging Routines
8915:
8916: =over 4
8917:
8918: These routines allow one to make log messages in the lonnet.log and
8919: lonnet.perm logfiles.
8920:
8921: =item *
8922:
8923: logtouch() : make sure the logfile, lonnet.log, exists
8924:
8925: =item *
8926:
8927: logthis() : append message to the normal lonnet.log file, it gets
8928: preiodically rolled over and deleted.
8929:
8930: =item *
8931:
8932: logperm() : append a permanent message to lonnet.perm.log, this log
8933: file never gets deleted by any automated portion of the system, only
8934: messages of critical importance should go in here.
8935:
8936: =back
8937:
8938: =head2 General File Helper Routines
8939:
8940: =over 4
8941:
8942: =item *
8943:
8944: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
8945: (a) files in /uploaded
8946: (i) If a local copy of the file exists -
8947: compares modification date of local copy with last-modified date for
8948: definitive version stored on home server for course. If local copy is
8949: stale, requests a new version from the home server and stores it.
8950: If the original has been removed from the home server, then local copy
8951: is unlinked.
8952: (ii) If local copy does not exist -
8953: requests the file from the home server and stores it.
8954:
8955: If $caller is 'uploadrep':
8956: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
8957: for request for files originally uploaded via DOCS.
8958: - returns 'ok' if fresh local copy now available, -1 otherwise.
8959:
8960: Otherwise:
8961: This indicates a call from the content generation phase of the request.
8962: - returns the entire contents of the file or -1.
8963:
8964: (b) files in /res
8965: - returns the entire contents of a file or -1;
8966: it properly subscribes to and replicates the file if neccessary.
8967:
8968:
8969: =item *
8970:
8971: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
8972: reference
8973:
8974: returns either a stat() list of data about the file or an empty list
8975: if the file doesn't exist or couldn't find out about it (connection
8976: problems or user unknown)
8977:
8978: =item *
8979:
8980: filelocation($dir,$file) : returns file system location of a file
8981: based on URI; meant to be "fairly clean" absolute reference, $dir is a
8982: directory that relative $file lookups are to looked in ($dir of /a/dir
8983: and a file of ../bob will become /a/bob)
8984:
8985: =item *
8986:
8987: hreflocation($dir,$file) : returns file system location or a URL; same as
8988: filelocation except for hrefs
8989:
8990: =item *
8991:
8992: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
8993:
8994: =back
8995:
8996: =head2 Usererfile file routines (/uploaded*)
8997:
8998: =over 4
8999:
9000: =item *
9001:
9002: userfileupload(): main rotine for putting a file in a user or course's
9003: filespace, arguments are,
9004:
9005: formname - required - this is the name of the element in $env where the
9006: filename, and the contents of the file to create/modifed exist
9007: the filename is in $env{'form.'.$formname.'.filename'} and the
9008: contents of the file is located in $env{'form.'.$formname}
9009: coursedoc - if true, store the file in the course of the active role
9010: of the current user
9011: subdir - required - subdirectory to put the file in under ../userfiles/
9012: if undefined, it will be placed in "unknown"
9013:
9014: (This routine calls clean_filename() to remove any dangerous
9015: characters from the filename, and then calls finuserfileupload() to
9016: complete the transaction)
9017:
9018: returns either the url of the uploaded file (/uploaded/....) if successful
9019: and /adm/notfound.html if unsuccessful
9020:
9021: =item *
9022:
9023: clean_filename(): routine for cleaing a filename up for storage in
9024: userfile space, argument is:
9025:
9026: filename - proposed filename
9027:
9028: returns: the new clean filename
9029:
9030: =item *
9031:
9032: finishuserfileupload(): routine that creaes and sends the file to
9033: userspace, probably shouldn't be called directly
9034:
9035: docuname: username or courseid of destination for the file
9036: docudom: domain of user/course of destination for the file
9037: formname: same as for userfileupload()
9038: fname: filename (inculding subdirectories) for the file
9039:
9040: returns either the url of the uploaded file (/uploaded/....) if successful
9041: and /adm/notfound.html if unsuccessful
9042:
9043: =item *
9044:
9045: renameuserfile(): renames an existing userfile to a new name
9046:
9047: Args:
9048: docuname: username or courseid of destination for the file
9049: docudom: domain of user/course of destination for the file
9050: old: current file name (including any subdirs under userfiles)
9051: new: desired file name (including any subdirs under userfiles)
9052:
9053: =item *
9054:
9055: mkdiruserfile(): creates a directory is a userfiles dir
9056:
9057: Args:
9058: docuname: username or courseid of destination for the file
9059: docudom: domain of user/course of destination for the file
9060: dir: dir to create (including any subdirs under userfiles)
9061:
9062: =item *
9063:
9064: removeuserfile(): removes a file that exists in userfiles
9065:
9066: Args:
9067: docuname: username or courseid of destination for the file
9068: docudom: domain of user/course of destination for the file
9069: fname: filname to delete (including any subdirs under userfiles)
9070:
9071: =item *
9072:
9073: removeuploadedurl(): convience function for removeuserfile()
9074:
9075: Args:
9076: url: a full /uploaded/... url to delete
9077:
9078: =item *
9079:
9080: get_portfile_permissions():
9081: Args:
9082: domain: domain of user or course contain the portfolio files
9083: user: name of user or num of course contain the portfolio files
9084: Returns:
9085: hashref of a dump of the proper file_permissions.db
9086:
9087:
9088: =item *
9089:
9090: get_access_controls():
9091:
9092: Args:
9093: current_permissions: the hash ref returned from get_portfile_permissions()
9094: group: (optional) the group you want the files associated with
9095: file: (optional) the file you want access info on
9096:
9097: Returns:
9098: a hash (keys are file names) of hashes containing
9099: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
9100: values are XML containing access control settings (see below)
9101:
9102: Internal notes:
9103:
9104: access controls are stored in file_permissions.db as key=value pairs.
9105: key -> path to file/file_name\0uniqueID:scope_end_start
9106: where scope -> public,guest,course,group,domains or users.
9107: end -> UNIX time for end of access (0 -> no end date)
9108: start -> UNIX time for start of access
9109:
9110: value -> XML description of access control
9111: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
9112: <start></start>
9113: <end></end>
9114:
9115: <password></password> for scope type = guest
9116:
9117: <domain></domain> for scope type = course or group
9118: <number></number>
9119: <roles id="">
9120: <role></role>
9121: <access></access>
9122: <section></section>
9123: <group></group>
9124: </roles>
9125:
9126: <dom></dom> for scope type = domains
9127:
9128: <users> for scope type = users
9129: <user>
9130: <uname></uname>
9131: <udom></udom>
9132: </user>
9133: </users>
9134: </scope>
9135:
9136: Access data is also aggregated for each file in an additional key=value pair:
9137: key -> path to file/file_name\0accesscontrol
9138: value -> reference to hash
9139: hash contains key = value pairs
9140: where key = uniqueID:scope_end_start
9141: value = UNIX time record was last updated
9142:
9143: Used to improve speed of look-ups of access controls for each file.
9144:
9145: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
9146:
9147: modify_access_controls():
9148:
9149: Modifies access controls for a portfolio file
9150: Args
9151: 1. file name
9152: 2. reference to hash of required changes,
9153: 3. domain
9154: 4. username
9155: where domain,username are the domain of the portfolio owner
9156: (either a user or a course)
9157:
9158: Returns:
9159: 1. result of additions or updates ('ok' or 'error', with error message).
9160: 2. result of deletions ('ok' or 'error', with error message).
9161: 3. reference to hash of any new or updated access controls.
9162: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
9163: key = integer (inbound ID)
9164: value = uniqueID
9165:
9166: =back
9167:
9168: =head2 HTTP Helper Routines
9169:
9170: =over 4
9171:
9172: =item *
9173:
9174: escape() : unpack non-word characters into CGI-compatible hex codes
9175:
9176: =item *
9177:
9178: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
9179:
9180: =back
9181:
9182: =head1 PRIVATE SUBROUTINES
9183:
9184: =head2 Underlying communication routines (Shouldn't call)
9185:
9186: =over 4
9187:
9188: =item *
9189:
9190: subreply() : tries to pass a message to lonc, returns con_lost if incapable
9191:
9192: =item *
9193:
9194: reply() : uses subreply to send a message to remote machine, logs all failures
9195:
9196: =item *
9197:
9198: critical() : passes a critical message to another server; if cannot
9199: get through then place message in connection buffer directory and
9200: returns con_delayed, if incapable of saving message, returns
9201: con_failed
9202:
9203: =item *
9204:
9205: reconlonc() : tries to reconnect lonc client processes.
9206:
9207: =back
9208:
9209: =head2 Resource Access Logging
9210:
9211: =over 4
9212:
9213: =item *
9214:
9215: flushcourselogs() : flush (save) buffer logs and access logs
9216:
9217: =item *
9218:
9219: courselog($what) : save message for course in hash
9220:
9221: =item *
9222:
9223: courseacclog($what) : save message for course using &courselog(). Perform
9224: special processing for specific resource types (problems, exams, quizzes, etc).
9225:
9226: =item *
9227:
9228: goodbye() : flush course logs and log shutting down; it is called in srm.conf
9229: as a PerlChildExitHandler
9230:
9231: =back
9232:
9233: =head2 Other
9234:
9235: =over 4
9236:
9237: =item *
9238:
9239: symblist($mapname,%newhash) : update symbolic storage links
9240:
9241: =back
9242:
9243: =cut
9244:
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