1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.953 2008/03/28 14:52:57 www Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: package Apache::lonnet;
31:
32: use strict;
33: use LWP::UserAgent();
34: use HTTP::Date;
35: # use Date::Parse;
36: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
37: $_64bit %env);
38:
39: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
40: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
41: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
42: %courseownerbuf, %coursetypebuf);
43:
44: use IO::Socket;
45: use GDBM_File;
46: use HTML::LCParser;
47: use Fcntl qw(:flock);
48: use Storable qw(thaw nfreeze);
49: use Time::HiRes qw( gettimeofday tv_interval );
50: use Cache::Memcached;
51: use Digest::MD5;
52: use Math::Random;
53: use LONCAPA qw(:DEFAULT :match);
54: use LONCAPA::Configuration;
55:
56: my $readit;
57: my $max_connection_retries = 10; # Or some such value.
58:
59: require Exporter;
60:
61: our @ISA = qw (Exporter);
62: our @EXPORT = qw(%env);
63:
64: =pod
65:
66: =head1 Package Variables
67:
68: These are largely undocumented, so if you decipher one please note it here.
69:
70: =over 4
71:
72: =item $processmarker
73:
74: Contains the time this process was started and this servers host id.
75:
76: =item $dumpcount
77:
78: Counts the number of times a message log flush has been attempted (regardless
79: of success) by this process. Used as part of the filename when messages are
80: delayed.
81:
82: =back
83:
84: =cut
85:
86:
87: # --------------------------------------------------------------------- Logging
88: {
89: my $logid;
90: sub instructor_log {
91: my ($hash_name,$storehash,$delflag,$uname,$udom)=@_;
92: $logid++;
93: my $id=time().'00000'.$$.'00000'.$logid;
94: return &Apache::lonnet::put('nohist_'.$hash_name,
95: { $id => {
96: 'exe_uname' => $env{'user.name'},
97: 'exe_udom' => $env{'user.domain'},
98: 'exe_time' => time(),
99: 'exe_ip' => $ENV{'REMOTE_ADDR'},
100: 'delflag' => $delflag,
101: 'logentry' => $storehash,
102: 'uname' => $uname,
103: 'udom' => $udom,
104: }
105: },
106: $env{'course.'.$env{'request.course.id'}.'.domain'},
107: $env{'course.'.$env{'request.course.id'}.'.num'}
108: );
109: }
110: }
111:
112: sub logtouch {
113: my $execdir=$perlvar{'lonDaemons'};
114: unless (-e "$execdir/logs/lonnet.log") {
115: open(my $fh,">>$execdir/logs/lonnet.log");
116: close $fh;
117: }
118: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
119: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
120: }
121:
122: sub logthis {
123: my $message=shift;
124: my $execdir=$perlvar{'lonDaemons'};
125: my $now=time;
126: my $local=localtime($now);
127: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
128: print $fh "$local ($$): $message\n";
129: close($fh);
130: }
131: return 1;
132: }
133:
134: sub logperm {
135: my $message=shift;
136: my $execdir=$perlvar{'lonDaemons'};
137: my $now=time;
138: my $local=localtime($now);
139: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
140: print $fh "$now:$message:$local\n";
141: close($fh);
142: }
143: return 1;
144: }
145:
146: sub create_connection {
147: my ($hostname,$lonid) = @_;
148: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
149: Type => SOCK_STREAM,
150: Timeout => 10);
151: return 0 if (!$client);
152: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
153: my $result = <$client>;
154: chomp($result);
155: return 1 if ($result eq 'done');
156: return 0;
157: }
158:
159:
160: # -------------------------------------------------- Non-critical communication
161: sub subreply {
162: my ($cmd,$server)=@_;
163: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
164: #
165: # With loncnew process trimming, there's a timing hole between lonc server
166: # process exit and the master server picking up the listen on the AF_UNIX
167: # socket. In that time interval, a lock file will exist:
168:
169: my $lockfile=$peerfile.".lock";
170: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
171: sleep(1);
172: }
173: # At this point, either a loncnew parent is listening or an old lonc
174: # or loncnew child is listening so we can connect or everything's dead.
175: #
176: # We'll give the connection a few tries before abandoning it. If
177: # connection is not possible, we'll con_lost back to the client.
178: #
179: my $client;
180: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
181: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
182: Type => SOCK_STREAM,
183: Timeout => 10);
184: if ($client) {
185: last; # Connected!
186: } else {
187: &create_connection(&hostname($server),$server);
188: }
189: sleep(1); # Try again later if failed connection.
190: }
191: my $answer;
192: if ($client) {
193: print $client "sethost:$server:$cmd\n";
194: $answer=<$client>;
195: if (!$answer) { $answer="con_lost"; }
196: chomp($answer);
197: } else {
198: $answer = 'con_lost'; # Failed connection.
199: }
200: return $answer;
201: }
202:
203: sub reply {
204: my ($cmd,$server)=@_;
205: unless (defined(&hostname($server))) { return 'no_such_host'; }
206: my $answer=subreply($cmd,$server);
207: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
208: &logthis("<font color=\"blue\">WARNING:".
209: " $cmd to $server returned $answer</font>");
210: }
211: return $answer;
212: }
213:
214: # ----------------------------------------------------------- Send USR1 to lonc
215:
216: sub reconlonc {
217: my ($lonid) = @_;
218: my $hostname = &hostname($lonid);
219: if ($lonid) {
220: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
221: if ($hostname && -e $peerfile) {
222: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
223: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
224: Type => SOCK_STREAM,
225: Timeout => 10);
226: if ($client) {
227: print $client ("reset_retries\n");
228: my $answer=<$client>;
229: #reset just this one.
230: }
231: }
232: return;
233: }
234:
235: &logthis("Trying to reconnect lonc");
236: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
237: if (open(my $fh,"<$loncfile")) {
238: my $loncpid=<$fh>;
239: chomp($loncpid);
240: if (kill 0 => $loncpid) {
241: &logthis("lonc at pid $loncpid responding, sending USR1");
242: kill USR1 => $loncpid;
243: sleep 1;
244: } else {
245: &logthis(
246: "<font color=\"blue\">WARNING:".
247: " lonc at pid $loncpid not responding, giving up</font>");
248: }
249: } else {
250: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
251: }
252: }
253:
254: # ------------------------------------------------------ Critical communication
255:
256: sub critical {
257: my ($cmd,$server)=@_;
258: unless (&hostname($server)) {
259: &logthis("<font color=\"blue\">WARNING:".
260: " Critical message to unknown server ($server)</font>");
261: return 'no_such_host';
262: }
263: my $answer=reply($cmd,$server);
264: if ($answer eq 'con_lost') {
265: &reconlonc("$perlvar{'lonSockDir'}/$server");
266: my $answer=reply($cmd,$server);
267: if ($answer eq 'con_lost') {
268: my $now=time;
269: my $middlename=$cmd;
270: $middlename=substr($middlename,0,16);
271: $middlename=~s/\W//g;
272: my $dfilename=
273: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
274: $dumpcount++;
275: {
276: my $dfh;
277: if (open($dfh,">$dfilename")) {
278: print $dfh "$cmd\n";
279: close($dfh);
280: }
281: }
282: sleep 2;
283: my $wcmd='';
284: {
285: my $dfh;
286: if (open($dfh,"<$dfilename")) {
287: $wcmd=<$dfh>;
288: close($dfh);
289: }
290: }
291: chomp($wcmd);
292: if ($wcmd eq $cmd) {
293: &logthis("<font color=\"blue\">WARNING: ".
294: "Connection buffer $dfilename: $cmd</font>");
295: &logperm("D:$server:$cmd");
296: return 'con_delayed';
297: } else {
298: &logthis("<font color=\"red\">CRITICAL:"
299: ." Critical connection failed: $server $cmd</font>");
300: &logperm("F:$server:$cmd");
301: return 'con_failed';
302: }
303: }
304: }
305: return $answer;
306: }
307:
308: # ------------------------------------------- check if return value is an error
309:
310: sub error {
311: my ($result) = @_;
312: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
313: if ($2 == 2) { return undef; }
314: return $1;
315: }
316: return undef;
317: }
318:
319: sub convert_and_load_session_env {
320: my ($lonidsdir,$handle)=@_;
321: my @profile;
322: {
323: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
324: if (!$opened) {
325: return 0;
326: }
327: flock($idf,LOCK_SH);
328: @profile=<$idf>;
329: close($idf);
330: }
331: my %temp_env;
332: foreach my $line (@profile) {
333: if ($line !~ m/=/) {
334: return 0;
335: }
336: chomp($line);
337: my ($envname,$envvalue)=split(/=/,$line,2);
338: $temp_env{&unescape($envname)} = &unescape($envvalue);
339: }
340: unlink("$lonidsdir/$handle.id");
341: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
342: 0640)) {
343: %disk_env = %temp_env;
344: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
345: untie(%disk_env);
346: }
347: return 1;
348: }
349:
350: # ------------------------------------------- Transfer profile into environment
351: my $env_loaded;
352: sub transfer_profile_to_env {
353: my ($lonidsdir,$handle,$force_transfer) = @_;
354: if (!$force_transfer && $env_loaded) { return; }
355:
356: if (!defined($lonidsdir)) {
357: $lonidsdir = $perlvar{'lonIDsDir'};
358: }
359: if (!defined($handle)) {
360: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
361: }
362:
363: my $convert;
364: {
365: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
366: if (!$opened) {
367: return;
368: }
369: flock($idf,LOCK_SH);
370: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
371: &GDBM_READER(),0640)) {
372: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
373: untie(%disk_env);
374: } else {
375: $convert = 1;
376: }
377: }
378: if ($convert) {
379: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
380: &logthis("Failed to load session, or convert session.");
381: }
382: }
383:
384: my %remove;
385: while ( my $envname = each(%env) ) {
386: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
387: if ($time < time-300) {
388: $remove{$key}++;
389: }
390: }
391: }
392:
393: $env{'user.environment'} = "$lonidsdir/$handle.id";
394: $env_loaded=1;
395: foreach my $expired_key (keys(%remove)) {
396: &delenv($expired_key);
397: }
398: }
399:
400: # ---------------------------------------------------- Check for valid session
401: sub check_for_valid_session {
402: my ($r) = @_;
403: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
404: my $lonid=$cookies{'lonID'};
405: return undef if (!$lonid);
406:
407: my $handle=&LONCAPA::clean_handle($lonid->value);
408: my $lonidsdir=$r->dir_config('lonIDsDir');
409: return undef if (!-e "$lonidsdir/$handle.id");
410:
411: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
412: return undef if (!$opened);
413:
414: flock($idf,LOCK_SH);
415: my %disk_env;
416: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
417: &GDBM_READER(),0640)) {
418: return undef;
419: }
420:
421: if (!defined($disk_env{'user.name'})
422: || !defined($disk_env{'user.domain'})) {
423: return undef;
424: }
425: return $handle;
426: }
427:
428: sub timed_flock {
429: my ($file,$lock_type) = @_;
430: my $failed=0;
431: eval {
432: local $SIG{__DIE__}='DEFAULT';
433: local $SIG{ALRM}=sub {
434: $failed=1;
435: die("failed lock");
436: };
437: alarm(13);
438: flock($file,$lock_type);
439: alarm(0);
440: };
441: if ($failed) {
442: return undef;
443: } else {
444: return 1;
445: }
446: }
447:
448: # ---------------------------------------------------------- Append Environment
449:
450: sub appenv {
451: my ($newenv,$roles) = @_;
452: if (ref($newenv) eq 'HASH') {
453: foreach my $key (keys(%{$newenv})) {
454: my $refused = 0;
455: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
456: $refused = 1;
457: if (ref($roles) eq 'ARRAY') {
458: my ($type,$role) = ($key =~ /^user\.(role|priv)\.([^.]+)\./);
459: if (grep(/^\Q$role\E$/,@{$roles})) {
460: $refused = 0;
461: }
462: }
463: }
464: if ($refused) {
465: &logthis("<font color=\"blue\">WARNING: ".
466: "Attempt to modify environment ".$key." to ".$newenv->{$key}
467: .'</font>');
468: delete($newenv->{$key});
469: } else {
470: $env{$key}=$newenv->{$key};
471: }
472: }
473: my $opened = open(my $env_file,'+<',$env{'user.environment'});
474: if ($opened
475: && &timed_flock($env_file,LOCK_EX)
476: &&
477: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
478: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
479: while (my ($key,$value) = each(%{$newenv})) {
480: $disk_env{$key} = $value;
481: }
482: untie(%disk_env);
483: }
484: }
485: return 'ok';
486: }
487: # ----------------------------------------------------- Delete from Environment
488:
489: sub delenv {
490: my $delthis=shift;
491: if (($delthis=~/user\.role/) || ($delthis=~/user\.priv/)) {
492: &logthis("<font color=\"blue\">WARNING: ".
493: "Attempt to delete from environment ".$delthis);
494: return 'error';
495: }
496: my $opened = open(my $env_file,'+<',$env{'user.environment'});
497: if ($opened
498: && &timed_flock($env_file,LOCK_EX)
499: &&
500: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
501: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
502: foreach my $key (keys(%disk_env)) {
503: if ($key=~/^$delthis/) {
504: delete($env{$key});
505: delete($disk_env{$key});
506: }
507: }
508: untie(%disk_env);
509: }
510: return 'ok';
511: }
512:
513: sub get_env_multiple {
514: my ($name) = @_;
515: my @values;
516: if (defined($env{$name})) {
517: # exists is it an array
518: if (ref($env{$name})) {
519: @values=@{ $env{$name} };
520: } else {
521: $values[0]=$env{$name};
522: }
523: }
524: return(@values);
525: }
526:
527: # ------------------------------------------ Find out current server userload
528: sub userload {
529: my $numusers=0;
530: {
531: opendir(LONIDS,$perlvar{'lonIDsDir'});
532: my $filename;
533: my $curtime=time;
534: while ($filename=readdir(LONIDS)) {
535: next if ($filename eq '.' || $filename eq '..');
536: next if ($filename =~ /publicuser_\d+\.id/);
537: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
538: if ($curtime-$mtime < 1800) { $numusers++; }
539: }
540: closedir(LONIDS);
541: }
542: my $userloadpercent=0;
543: my $maxuserload=$perlvar{'lonUserLoadLim'};
544: if ($maxuserload) {
545: $userloadpercent=100*$numusers/$maxuserload;
546: }
547: $userloadpercent=sprintf("%.2f",$userloadpercent);
548: return $userloadpercent;
549: }
550:
551: # ------------------------------------------ Fight off request when overloaded
552:
553: sub overloaderror {
554: my ($r,$checkserver)=@_;
555: unless ($checkserver) { $checkserver=$perlvar{'lonHostID'}; }
556: my $loadavg;
557: if ($checkserver eq $perlvar{'lonHostID'}) {
558: open(my $loadfile,'/proc/loadavg');
559: $loadavg=<$loadfile>;
560: $loadavg =~ s/\s.*//g;
561: $loadavg = 100*$loadavg/$perlvar{'lonLoadLim'};
562: close($loadfile);
563: } else {
564: $loadavg=&reply('load',$checkserver);
565: }
566: my $overload=$loadavg-100;
567: if ($overload>0) {
568: $r->err_headers_out->{'Retry-After'}=$overload;
569: $r->log_error('Overload of '.$overload.' on '.$checkserver);
570: return 413;
571: }
572: return '';
573: }
574:
575: # ------------------------------ Find server with least workload from spare.tab
576:
577: sub spareserver {
578: my ($loadpercent,$userloadpercent,$want_server_name) = @_;
579: my $spare_server;
580: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
581: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
582: : $userloadpercent;
583:
584: foreach my $try_server (@{ $spareid{'primary'} }) {
585: ($spare_server, $lowest_load) =
586: &compare_server_load($try_server, $spare_server, $lowest_load);
587: }
588:
589: my $found_server = ($spare_server ne '' && $lowest_load < 100);
590:
591: if (!$found_server) {
592: foreach my $try_server (@{ $spareid{'default'} }) {
593: ($spare_server, $lowest_load) =
594: &compare_server_load($try_server, $spare_server, $lowest_load);
595: }
596: }
597:
598: if (!$want_server_name) {
599: $spare_server="http://".&hostname($spare_server);
600: }
601: return $spare_server;
602: }
603:
604: sub compare_server_load {
605: my ($try_server, $spare_server, $lowest_load) = @_;
606:
607: my $loadans = &reply('load', $try_server);
608: my $userloadans = &reply('userload',$try_server);
609:
610: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
611: next; #didn't get a number from the server
612: }
613:
614: my $load;
615: if ($loadans =~ /\d/) {
616: if ($userloadans =~ /\d/) {
617: #both are numbers, pick the bigger one
618: $load = ($loadans > $userloadans) ? $loadans
619: : $userloadans;
620: } else {
621: $load = $loadans;
622: }
623: } else {
624: $load = $userloadans;
625: }
626:
627: if (($load =~ /\d/) && ($load < $lowest_load)) {
628: $spare_server = $try_server;
629: $lowest_load = $load;
630: }
631: return ($spare_server,$lowest_load);
632: }
633:
634: # --------------------------- ask offload servers if user already has a session
635: sub find_existing_session {
636: my ($udom,$uname) = @_;
637: foreach my $try_server (@{ $spareid{'primary'} },
638: @{ $spareid{'default'} }) {
639: return $try_server if (&has_user_session($try_server, $udom, $uname));
640: }
641: return;
642: }
643:
644: # -------------------------------- ask if server already has a session for user
645: sub has_user_session {
646: my ($lonid,$udom,$uname) = @_;
647: my $result = &reply(join(':','userhassession',
648: map {&escape($_)} ($udom,$uname)),$lonid);
649: return 1 if ($result eq 'ok');
650:
651: return 0;
652: }
653:
654: # --------------------------------------------- Try to change a user's password
655:
656: sub changepass {
657: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
658: $currentpass = &escape($currentpass);
659: $newpass = &escape($newpass);
660: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context",
661: $server);
662: if (! $answer) {
663: &logthis("No reply on password change request to $server ".
664: "by $uname in domain $udom.");
665: } elsif ($answer =~ "^ok") {
666: &logthis("$uname in $udom successfully changed their password ".
667: "on $server.");
668: } elsif ($answer =~ "^pwchange_failure") {
669: &logthis("$uname in $udom was unable to change their password ".
670: "on $server. The action was blocked by either lcpasswd ".
671: "or pwchange");
672: } elsif ($answer =~ "^non_authorized") {
673: &logthis("$uname in $udom did not get their password correct when ".
674: "attempting to change it on $server.");
675: } elsif ($answer =~ "^auth_mode_error") {
676: &logthis("$uname in $udom attempted to change their password despite ".
677: "not being locally or internally authenticated on $server.");
678: } elsif ($answer =~ "^unknown_user") {
679: &logthis("$uname in $udom attempted to change their password ".
680: "on $server but were unable to because $server is not ".
681: "their home server.");
682: } elsif ($answer =~ "^refused") {
683: &logthis("$server refused to change $uname in $udom password because ".
684: "it was sent an unencrypted request to change the password.");
685: }
686: return $answer;
687: }
688:
689: # ----------------------- Try to determine user's current authentication scheme
690:
691: sub queryauthenticate {
692: my ($uname,$udom)=@_;
693: my $uhome=&homeserver($uname,$udom);
694: if (!$uhome) {
695: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
696: return 'no_host';
697: }
698: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
699: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
700: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
701: }
702: return $answer;
703: }
704:
705: # --------- Try to authenticate user from domain's lib servers (first this one)
706:
707: sub authenticate {
708: my ($uname,$upass,$udom,$checkdefauth)=@_;
709: $upass=&escape($upass);
710: $uname= &LONCAPA::clean_username($uname);
711: my $uhome=&homeserver($uname,$udom,1);
712: my $newhome;
713: if ((!$uhome) || ($uhome eq 'no_host')) {
714: # Maybe the machine was offline and only re-appeared again recently?
715: &reconlonc();
716: # One more
717: $uhome=&homeserver($uname,$udom,1);
718: if (($uhome eq 'no_host') && $checkdefauth) {
719: if (defined(&domain($udom,'primary'))) {
720: $newhome=&domain($udom,'primary');
721: }
722: if ($newhome ne '') {
723: $uhome = $newhome;
724: }
725: }
726: if ((!$uhome) || ($uhome eq 'no_host')) {
727: &logthis("User $uname at $udom is unknown in authenticate");
728: return 'no_host';
729: }
730: }
731: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth",$uhome);
732: if ($answer eq 'authorized') {
733: if ($newhome) {
734: &logthis("User $uname at $udom authorized by $uhome, but needs account");
735: return 'no_account_on_host';
736: } else {
737: &logthis("User $uname at $udom authorized by $uhome");
738: return $uhome;
739: }
740: }
741: if ($answer eq 'non_authorized') {
742: &logthis("User $uname at $udom rejected by $uhome");
743: return 'no_host';
744: }
745: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
746: return 'no_host';
747: }
748:
749: # ---------------------- Find the homebase for a user from domain's lib servers
750:
751: my %homecache;
752: sub homeserver {
753: my ($uname,$udom,$ignoreBadCache)=@_;
754: my $index="$uname:$udom";
755:
756: if (exists($homecache{$index})) { return $homecache{$index}; }
757:
758: my %servers = &get_servers($udom,'library');
759: foreach my $tryserver (keys(%servers)) {
760: next if ($ignoreBadCache ne 'true' &&
761: exists($badServerCache{$tryserver}));
762:
763: my $answer=reply("home:$udom:$uname",$tryserver);
764: if ($answer eq 'found') {
765: delete($badServerCache{$tryserver});
766: return $homecache{$index}=$tryserver;
767: } elsif ($answer eq 'no_host') {
768: $badServerCache{$tryserver}=1;
769: }
770: }
771: return 'no_host';
772: }
773:
774: # ------------------------------------- Find the usernames behind a list of IDs
775:
776: sub idget {
777: my ($udom,@ids)=@_;
778: my %returnhash=();
779:
780: my %servers = &get_servers($udom,'library');
781: foreach my $tryserver (keys(%servers)) {
782: my $idlist=join('&',@ids);
783: $idlist=~tr/A-Z/a-z/;
784: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
785: my @answer=();
786: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
787: @answer=split(/\&/,$reply);
788: } ;
789: my $i;
790: for ($i=0;$i<=$#ids;$i++) {
791: if ($answer[$i]) {
792: $returnhash{$ids[$i]}=$answer[$i];
793: }
794: }
795: }
796: return %returnhash;
797: }
798:
799: # ------------------------------------- Find the IDs behind a list of usernames
800:
801: sub idrget {
802: my ($udom,@unames)=@_;
803: my %returnhash=();
804: foreach my $uname (@unames) {
805: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
806: }
807: return %returnhash;
808: }
809:
810: # ------------------------------- Store away a list of names and associated IDs
811:
812: sub idput {
813: my ($udom,%ids)=@_;
814: my %servers=();
815: foreach my $uname (keys(%ids)) {
816: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
817: my $uhom=&homeserver($uname,$udom);
818: if ($uhom ne 'no_host') {
819: my $id=&escape($ids{$uname});
820: $id=~tr/A-Z/a-z/;
821: my $esc_unam=&escape($uname);
822: if ($servers{$uhom}) {
823: $servers{$uhom}.='&'.$id.'='.$esc_unam;
824: } else {
825: $servers{$uhom}=$id.'='.$esc_unam;
826: }
827: }
828: }
829: foreach my $server (keys(%servers)) {
830: &critical('idput:'.$udom.':'.$servers{$server},$server);
831: }
832: }
833:
834: # ------------------------------------------- get items from domain db files
835:
836: sub get_dom {
837: my ($namespace,$storearr,$udom,$uhome)=@_;
838: my $items='';
839: foreach my $item (@$storearr) {
840: $items.=&escape($item).'&';
841: }
842: $items=~s/\&$//;
843: if (!$udom) {
844: $udom=$env{'user.domain'};
845: if (defined(&domain($udom,'primary'))) {
846: $uhome=&domain($udom,'primary');
847: } else {
848: undef($uhome);
849: }
850: } else {
851: if (!$uhome) {
852: if (defined(&domain($udom,'primary'))) {
853: $uhome=&domain($udom,'primary');
854: }
855: }
856: }
857: if ($udom && $uhome && ($uhome ne 'no_host')) {
858: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
859: my %returnhash;
860: if ($rep eq '' || $rep =~ /^error: 2 /) {
861: return %returnhash;
862: }
863: my @pairs=split(/\&/,$rep);
864: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
865: return @pairs;
866: }
867: my $i=0;
868: foreach my $item (@$storearr) {
869: $returnhash{$item}=&thaw_unescape($pairs[$i]);
870: $i++;
871: }
872: return %returnhash;
873: } else {
874: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
875: }
876: }
877:
878: # -------------------------------------------- put items in domain db files
879:
880: sub put_dom {
881: my ($namespace,$storehash,$udom,$uhome)=@_;
882: if (!$udom) {
883: $udom=$env{'user.domain'};
884: if (defined(&domain($udom,'primary'))) {
885: $uhome=&domain($udom,'primary');
886: } else {
887: undef($uhome);
888: }
889: } else {
890: if (!$uhome) {
891: if (defined(&domain($udom,'primary'))) {
892: $uhome=&domain($udom,'primary');
893: }
894: }
895: }
896: if ($udom && $uhome && ($uhome ne 'no_host')) {
897: my $items='';
898: foreach my $item (keys(%$storehash)) {
899: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
900: }
901: $items=~s/\&$//;
902: return &reply("putdom:$udom:$namespace:$items",$uhome);
903: } else {
904: &logthis("put_dom failed - no homeserver and/or domain");
905: }
906: }
907:
908: sub retrieve_inst_usertypes {
909: my ($udom) = @_;
910: my (%returnhash,@order);
911: if (defined(&domain($udom,'primary'))) {
912: my $uhome=&domain($udom,'primary');
913: my $rep=&reply("inst_usertypes:$udom",$uhome);
914: my ($hashitems,$orderitems) = split(/:/,$rep);
915: my @pairs=split(/\&/,$hashitems);
916: foreach my $item (@pairs) {
917: my ($key,$value)=split(/=/,$item,2);
918: $key = &unescape($key);
919: next if ($key =~ /^error: 2 /);
920: $returnhash{$key}=&thaw_unescape($value);
921: }
922: my @esc_order = split(/\&/,$orderitems);
923: foreach my $item (@esc_order) {
924: push(@order,&unescape($item));
925: }
926: } else {
927: &logthis("get_dom failed - no primary domain server for $udom");
928: }
929: return (\%returnhash,\@order);
930: }
931:
932: sub is_domainimage {
933: my ($url) = @_;
934: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
935: if (&domain($1) ne '') {
936: return '1';
937: }
938: }
939: return;
940: }
941:
942: sub inst_directory_query {
943: my ($srch) = @_;
944: my $udom = $srch->{'srchdomain'};
945: my %results;
946: my $homeserver = &domain($udom,'primary');
947: my $outcome;
948: if ($homeserver ne '') {
949: my $queryid=&reply("querysend:instdirsearch:".
950: &escape($srch->{'srchby'}).':'.
951: &escape($srch->{'srchterm'}).':'.
952: &escape($srch->{'srchtype'}),$homeserver);
953: my $host=&hostname($homeserver);
954: if ($queryid !~/^\Q$host\E\_/) {
955: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
956: return;
957: }
958: my $response = &get_query_reply($queryid);
959: my $maxtries = 5;
960: my $tries = 1;
961: while (($response=~/^timeout/) && ($tries < $maxtries)) {
962: $response = &get_query_reply($queryid);
963: $tries ++;
964: }
965:
966: if (!&error($response) && $response ne 'refused') {
967: if ($response eq 'unavailable') {
968: $outcome = $response;
969: } else {
970: $outcome = 'ok';
971: my @matches = split(/\n/,$response);
972: foreach my $match (@matches) {
973: my ($key,$value) = split(/=/,$match);
974: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
975: }
976: }
977: }
978: }
979: return ($outcome,%results);
980: }
981:
982: sub usersearch {
983: my ($srch) = @_;
984: my $dom = $srch->{'srchdomain'};
985: my %results;
986: my %libserv = &all_library();
987: my $query = 'usersearch';
988: foreach my $tryserver (keys(%libserv)) {
989: if (&host_domain($tryserver) eq $dom) {
990: my $host=&hostname($tryserver);
991: my $queryid=
992: &reply("querysend:".&escape($query).':'.
993: &escape($srch->{'srchby'}).':'.
994: &escape($srch->{'srchtype'}).':'.
995: &escape($srch->{'srchterm'}),$tryserver);
996: if ($queryid !~/^\Q$host\E\_/) {
997: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
998: next;
999: }
1000: my $reply = &get_query_reply($queryid);
1001: my $maxtries = 1;
1002: my $tries = 1;
1003: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1004: $reply = &get_query_reply($queryid);
1005: $tries ++;
1006: }
1007: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1008: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1009: } else {
1010: my @matches;
1011: if ($reply =~ /\n/) {
1012: @matches = split(/\n/,$reply);
1013: } else {
1014: @matches = split(/\&/,$reply);
1015: }
1016: foreach my $match (@matches) {
1017: my ($uname,$udom,%userhash);
1018: foreach my $entry (split(/:/,$match)) {
1019: my ($key,$value) =
1020: map {&unescape($_);} split(/=/,$entry);
1021: $userhash{$key} = $value;
1022: if ($key eq 'username') {
1023: $uname = $value;
1024: } elsif ($key eq 'domain') {
1025: $udom = $value;
1026: }
1027: }
1028: $results{$uname.':'.$udom} = \%userhash;
1029: }
1030: }
1031: }
1032: }
1033: return %results;
1034: }
1035:
1036: sub get_instuser {
1037: my ($udom,$uname,$id) = @_;
1038: my $homeserver = &domain($udom,'primary');
1039: my ($outcome,%results);
1040: if ($homeserver ne '') {
1041: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
1042: &escape($id).':'.&escape($udom),$homeserver);
1043: my $host=&hostname($homeserver);
1044: if ($queryid !~/^\Q$host\E\_/) {
1045: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1046: return;
1047: }
1048: my $response = &get_query_reply($queryid);
1049: my $maxtries = 5;
1050: my $tries = 1;
1051: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1052: $response = &get_query_reply($queryid);
1053: $tries ++;
1054: }
1055: if (!&error($response) && $response ne 'refused') {
1056: if ($response eq 'unavailable') {
1057: $outcome = $response;
1058: } else {
1059: $outcome = 'ok';
1060: my @matches = split(/\n/,$response);
1061: foreach my $match (@matches) {
1062: my ($key,$value) = split(/=/,$match);
1063: $results{&unescape($key)} = &thaw_unescape($value);
1064: }
1065: }
1066: }
1067: }
1068: my %userinfo;
1069: if (ref($results{$uname}) eq 'HASH') {
1070: %userinfo = %{$results{$uname}};
1071: }
1072: return ($outcome,%userinfo);
1073: }
1074:
1075: sub inst_rulecheck {
1076: my ($udom,$uname,$id,$item,$rules) = @_;
1077: my %returnhash;
1078: if ($udom ne '') {
1079: if (ref($rules) eq 'ARRAY') {
1080: @{$rules} = map {&escape($_);} (@{$rules});
1081: my $rulestr = join(':',@{$rules});
1082: my $homeserver=&domain($udom,'primary');
1083: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1084: my $response;
1085: if ($item eq 'username') {
1086: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
1087: ':'.&escape($uname).':'.$rulestr,
1088: $homeserver));
1089: } elsif ($item eq 'id') {
1090: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
1091: ':'.&escape($id).':'.$rulestr,
1092: $homeserver));
1093: } elsif ($item eq 'selfcreate') {
1094: $response=&unescape(&reply('instselfcreatecheck:'.
1095: &escape($udom).':'.&escape($uname).
1096: ':'.$rulestr,$homeserver));
1097: }
1098: if ($response ne 'refused') {
1099: my @pairs=split(/\&/,$response);
1100: foreach my $item (@pairs) {
1101: my ($key,$value)=split(/=/,$item,2);
1102: $key = &unescape($key);
1103: next if ($key =~ /^error: 2 /);
1104: $returnhash{$key}=&thaw_unescape($value);
1105: }
1106: }
1107: }
1108: }
1109: }
1110: return %returnhash;
1111: }
1112:
1113: sub inst_userrules {
1114: my ($udom,$check) = @_;
1115: my (%ruleshash,@ruleorder);
1116: if ($udom ne '') {
1117: my $homeserver=&domain($udom,'primary');
1118: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
1119: my $response;
1120: if ($check eq 'id') {
1121: $response=&reply('instidrules:'.&escape($udom),
1122: $homeserver);
1123: } elsif ($check eq 'email') {
1124: $response=&reply('instemailrules:'.&escape($udom),
1125: $homeserver);
1126: } else {
1127: $response=&reply('instuserrules:'.&escape($udom),
1128: $homeserver);
1129: }
1130: if (($response ne 'refused') && ($response ne 'error') &&
1131: ($response ne 'unknown_cmd') &&
1132: ($response ne 'no_such_host')) {
1133: my ($hashitems,$orderitems) = split(/:/,$response);
1134: my @pairs=split(/\&/,$hashitems);
1135: foreach my $item (@pairs) {
1136: my ($key,$value)=split(/=/,$item,2);
1137: $key = &unescape($key);
1138: next if ($key =~ /^error: 2 /);
1139: $ruleshash{$key}=&thaw_unescape($value);
1140: }
1141: my @esc_order = split(/\&/,$orderitems);
1142: foreach my $item (@esc_order) {
1143: push(@ruleorder,&unescape($item));
1144: }
1145: }
1146: }
1147: }
1148: return (\%ruleshash,\@ruleorder);
1149: }
1150:
1151: # ------------------------- Get Authentication and Language Defaults for Domain
1152:
1153: sub get_domain_defaults {
1154: my ($domain) = @_;
1155: my $cachetime = 60*60*24;
1156: my ($defauthtype,$defautharg,$deflang);
1157: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
1158: if (defined($cached)) {
1159: if (ref($result) eq 'HASH') {
1160: return %{$result};
1161: }
1162: }
1163: my %domdefaults;
1164: my %domconfig =
1165: &Apache::lonnet::get_dom('configuration',['defaults'],$domain);
1166: if (ref($domconfig{'defaults'}) eq 'HASH') {
1167: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
1168: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
1169: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
1170: } else {
1171: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
1172: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
1173: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
1174: }
1175: &Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,
1176: $cachetime);
1177: return %domdefaults;
1178: }
1179:
1180: # --------------------------------------------------- Assign a key to a student
1181:
1182: sub assign_access_key {
1183: #
1184: # a valid key looks like uname:udom#comments
1185: # comments are being appended
1186: #
1187: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
1188: $kdom=
1189: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
1190: $knum=
1191: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
1192: $cdom=
1193: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1194: $cnum=
1195: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1196: $udom=$env{'user.name'} unless (defined($udom));
1197: $uname=$env{'user.domain'} unless (defined($uname));
1198: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
1199: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
1200: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
1201: # assigned to this person
1202: # - this should not happen,
1203: # unless something went wrong
1204: # the first time around
1205: # ready to assign
1206: $logentry=$1.'; '.$logentry;
1207: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
1208: $kdom,$knum) eq 'ok') {
1209: # key now belongs to user
1210: my $envkey='key.'.$cdom.'_'.$cnum;
1211: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
1212: &appenv({'environment.'.$envkey => $ckey});
1213: return 'ok';
1214: } else {
1215: return
1216: 'error: Count not permanently assign key, will need to be re-entered later.';
1217: }
1218: } else {
1219: return 'error: Could not assign key, try again later.';
1220: }
1221: } elsif (!$existing{$ckey}) {
1222: # the key does not exist
1223: return 'error: The key does not exist';
1224: } else {
1225: # the key is somebody else's
1226: return 'error: The key is already in use';
1227: }
1228: }
1229:
1230: # ------------------------------------------ put an additional comment on a key
1231:
1232: sub comment_access_key {
1233: #
1234: # a valid key looks like uname:udom#comments
1235: # comments are being appended
1236: #
1237: my ($ckey,$cdom,$cnum,$logentry)=@_;
1238: $cdom=
1239: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1240: $cnum=
1241: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1242: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1243: if ($existing{$ckey}) {
1244: $existing{$ckey}.='; '.$logentry;
1245: # ready to assign
1246: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
1247: $cdom,$cnum) eq 'ok') {
1248: return 'ok';
1249: } else {
1250: return 'error: Count not store comment.';
1251: }
1252: } else {
1253: # the key does not exist
1254: return 'error: The key does not exist';
1255: }
1256: }
1257:
1258: # ------------------------------------------------------ Generate a set of keys
1259:
1260: sub generate_access_keys {
1261: my ($number,$cdom,$cnum,$logentry)=@_;
1262: $cdom=
1263: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1264: $cnum=
1265: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1266: unless (&allowed('mky',$cdom)) { return 0; }
1267: unless (($cdom) && ($cnum)) { return 0; }
1268: if ($number>10000) { return 0; }
1269: sleep(2); # make sure don't get same seed twice
1270: srand(time()^($$+($$<<15))); # from "Programming Perl"
1271: my $total=0;
1272: for (my $i=1;$i<=$number;$i++) {
1273: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
1274: sprintf("%lx",int(100000*rand)).'-'.
1275: sprintf("%lx",int(100000*rand));
1276: $newkey=~s/1/g/g; # folks mix up 1 and l
1277: $newkey=~s/0/h/g; # and also 0 and O
1278: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
1279: if ($existing{$newkey}) {
1280: $i--;
1281: } else {
1282: if (&put('accesskeys',
1283: { $newkey => '# generated '.localtime().
1284: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
1285: '; '.$logentry },
1286: $cdom,$cnum) eq 'ok') {
1287: $total++;
1288: }
1289: }
1290: }
1291: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
1292: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
1293: return $total;
1294: }
1295:
1296: # ------------------------------------------------------- Validate an accesskey
1297:
1298: sub validate_access_key {
1299: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
1300: $cdom=
1301: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
1302: $cnum=
1303: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
1304: $udom=$env{'user.domain'} unless (defined($udom));
1305: $uname=$env{'user.name'} unless (defined($uname));
1306: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
1307: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
1308: }
1309:
1310: # ------------------------------------- Find the section of student in a course
1311: sub devalidate_getsection_cache {
1312: my ($udom,$unam,$courseid)=@_;
1313: my $hashid="$udom:$unam:$courseid";
1314: &devalidate_cache_new('getsection',$hashid);
1315: }
1316:
1317: sub courseid_to_courseurl {
1318: my ($courseid) = @_;
1319: #already url style courseid
1320: return $courseid if ($courseid =~ m{^/});
1321:
1322: if (exists($env{'course.'.$courseid.'.num'})) {
1323: my $cnum = $env{'course.'.$courseid.'.num'};
1324: my $cdom = $env{'course.'.$courseid.'.domain'};
1325: return "/$cdom/$cnum";
1326: }
1327:
1328: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
1329: if (exists($courseinfo{'num'})) {
1330: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
1331: }
1332:
1333: return undef;
1334: }
1335:
1336: sub getsection {
1337: my ($udom,$unam,$courseid)=@_;
1338: my $cachetime=1800;
1339:
1340: my $hashid="$udom:$unam:$courseid";
1341: my ($result,$cached)=&is_cached_new('getsection',$hashid);
1342: if (defined($cached)) { return $result; }
1343:
1344: my %Pending;
1345: my %Expired;
1346: #
1347: # Each role can either have not started yet (pending), be active,
1348: # or have expired.
1349: #
1350: # If there is an active role, we are done.
1351: #
1352: # If there is more than one role which has not started yet,
1353: # choose the one which will start sooner
1354: # If there is one role which has not started yet, return it.
1355: #
1356: # If there is more than one expired role, choose the one which ended last.
1357: # If there is a role which has expired, return it.
1358: #
1359: $courseid = &courseid_to_courseurl($courseid);
1360: my %roleshash = &dump('roles',$udom,$unam,$courseid);
1361: foreach my $key (keys(%roleshash)) {
1362: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
1363: my $section=$1;
1364: if ($key eq $courseid.'_st') { $section=''; }
1365: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
1366: my $now=time;
1367: if (defined($end) && $end && ($now > $end)) {
1368: $Expired{$end}=$section;
1369: next;
1370: }
1371: if (defined($start) && $start && ($now < $start)) {
1372: $Pending{$start}=$section;
1373: next;
1374: }
1375: return &do_cache_new('getsection',$hashid,$section,$cachetime);
1376: }
1377: #
1378: # Presumedly there will be few matching roles from the above
1379: # loop and the sorting time will be negligible.
1380: if (scalar(keys(%Pending))) {
1381: my ($time) = sort {$a <=> $b} keys(%Pending);
1382: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
1383: }
1384: if (scalar(keys(%Expired))) {
1385: my @sorted = sort {$a <=> $b} keys(%Expired);
1386: my $time = pop(@sorted);
1387: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
1388: }
1389: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
1390: }
1391:
1392: sub save_cache {
1393: &purge_remembered();
1394: #&Apache::loncommon::validate_page();
1395: undef(%env);
1396: undef($env_loaded);
1397: }
1398:
1399: my $to_remember=-1;
1400: my %remembered;
1401: my %accessed;
1402: my $kicks=0;
1403: my $hits=0;
1404: sub make_key {
1405: my ($name,$id) = @_;
1406: if (length($id) > 65
1407: && length(&escape($id)) > 200) {
1408: $id=length($id).':'.&Digest::MD5::md5_hex($id);
1409: }
1410: return &escape($name.':'.$id);
1411: }
1412:
1413: sub devalidate_cache_new {
1414: my ($name,$id,$debug) = @_;
1415: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
1416: $id=&make_key($name,$id);
1417: $memcache->delete($id);
1418: delete($remembered{$id});
1419: delete($accessed{$id});
1420: }
1421:
1422: sub is_cached_new {
1423: my ($name,$id,$debug) = @_;
1424: $id=&make_key($name,$id);
1425: if (exists($remembered{$id})) {
1426: if ($debug) { &Apache::lonnet::logthis("Earyl return $id of $remembered{$id} "); }
1427: $accessed{$id}=[&gettimeofday()];
1428: $hits++;
1429: return ($remembered{$id},1);
1430: }
1431: my $value = $memcache->get($id);
1432: if (!(defined($value))) {
1433: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
1434: return (undef,undef);
1435: }
1436: if ($value eq '__undef__') {
1437: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
1438: $value=undef;
1439: }
1440: &make_room($id,$value,$debug);
1441: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
1442: return ($value,1);
1443: }
1444:
1445: sub do_cache_new {
1446: my ($name,$id,$value,$time,$debug) = @_;
1447: $id=&make_key($name,$id);
1448: my $setvalue=$value;
1449: if (!defined($setvalue)) {
1450: $setvalue='__undef__';
1451: }
1452: if (!defined($time) ) {
1453: $time=600;
1454: }
1455: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
1456: my $result = $memcache->set($id,$setvalue,$time);
1457: if (! $result) {
1458: &logthis("caching of id -> $id failed");
1459: $memcache->disconnect_all();
1460: }
1461: # need to make a copy of $value
1462: &make_room($id,$value,$debug);
1463: return $value;
1464: }
1465:
1466: sub make_room {
1467: my ($id,$value,$debug)=@_;
1468:
1469: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
1470: : $value;
1471: if ($to_remember<0) { return; }
1472: $accessed{$id}=[&gettimeofday()];
1473: if (scalar(keys(%remembered)) <= $to_remember) { return; }
1474: my $to_kick;
1475: my $max_time=0;
1476: foreach my $other (keys(%accessed)) {
1477: if (&tv_interval($accessed{$other}) > $max_time) {
1478: $to_kick=$other;
1479: $max_time=&tv_interval($accessed{$other});
1480: }
1481: }
1482: delete($remembered{$to_kick});
1483: delete($accessed{$to_kick});
1484: $kicks++;
1485: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
1486: return;
1487: }
1488:
1489: sub purge_remembered {
1490: #&logthis("Tossing ".scalar(keys(%remembered)));
1491: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
1492: undef(%remembered);
1493: undef(%accessed);
1494: }
1495: # ------------------------------------- Read an entry from a user's environment
1496:
1497: sub userenvironment {
1498: my ($udom,$unam,@what)=@_;
1499: my %returnhash=();
1500: my @answer=split(/\&/,
1501: &reply('get:'.$udom.':'.$unam.':environment:'.join('&',@what),
1502: &homeserver($unam,$udom)));
1503: my $i;
1504: for ($i=0;$i<=$#what;$i++) {
1505: $returnhash{$what[$i]}=&unescape($answer[$i]);
1506: }
1507: return %returnhash;
1508: }
1509:
1510: # ---------------------------------------------------------- Get a studentphoto
1511: sub studentphoto {
1512: my ($udom,$unam,$ext) = @_;
1513: my $home=&Apache::lonnet::homeserver($unam,$udom);
1514: if (defined($env{'request.course.id'})) {
1515: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
1516: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
1517: return(&retrievestudentphoto($udom,$unam,$ext));
1518: } else {
1519: my ($result,$perm_reqd)=
1520: &Apache::lonnet::auto_photo_permission($unam,$udom);
1521: if ($result eq 'ok') {
1522: if (!($perm_reqd eq 'yes')) {
1523: return(&retrievestudentphoto($udom,$unam,$ext));
1524: }
1525: }
1526: }
1527: }
1528: } else {
1529: my ($result,$perm_reqd) =
1530: &Apache::lonnet::auto_photo_permission($unam,$udom);
1531: if ($result eq 'ok') {
1532: if (!($perm_reqd eq 'yes')) {
1533: return(&retrievestudentphoto($udom,$unam,$ext));
1534: }
1535: }
1536: }
1537: return '/adm/lonKaputt/lonlogo_broken.gif';
1538: }
1539:
1540: sub retrievestudentphoto {
1541: my ($udom,$unam,$ext,$type) = @_;
1542: my $home=&Apache::lonnet::homeserver($unam,$udom);
1543: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
1544: if ($ret eq 'ok') {
1545: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
1546: if ($type eq 'thumbnail') {
1547: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
1548: }
1549: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
1550: return $tokenurl;
1551: } else {
1552: if ($type eq 'thumbnail') {
1553: return '/adm/lonKaputt/genericstudent_tn.gif';
1554: } else {
1555: return '/adm/lonKaputt/lonlogo_broken.gif';
1556: }
1557: }
1558: }
1559:
1560: # -------------------------------------------------------------------- New chat
1561:
1562: sub chatsend {
1563: my ($newentry,$anon,$group)=@_;
1564: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
1565: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1566: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
1567: &reply('chatsend:'.$cdom.':'.$cnum.':'.
1568: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
1569: &escape($newentry)).':'.$group,$chome);
1570: }
1571:
1572: # ------------------------------------------ Find current version of a resource
1573:
1574: sub getversion {
1575: my $fname=&clutter(shift);
1576: unless ($fname=~/^\/res\//) { return -1; }
1577: return ¤tversion(&filelocation('',$fname));
1578: }
1579:
1580: sub currentversion {
1581: my $fname=shift;
1582: my ($result,$cached)=&is_cached_new('resversion',$fname);
1583: if (defined($cached)) { return $result; }
1584: my $author=$fname;
1585: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1586: my ($udom,$uname)=split(/\//,$author);
1587: my $home=homeserver($uname,$udom);
1588: if ($home eq 'no_host') {
1589: return -1;
1590: }
1591: my $answer=reply("currentversion:$fname",$home);
1592: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1593: return -1;
1594: }
1595: return &do_cache_new('resversion',$fname,$answer,600);
1596: }
1597:
1598: # ----------------------------- Subscribe to a resource, return URL if possible
1599:
1600: sub subscribe {
1601: my $fname=shift;
1602: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
1603: $fname=~s/[\n\r]//g;
1604: my $author=$fname;
1605: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1606: my ($udom,$uname)=split(/\//,$author);
1607: my $home=homeserver($uname,$udom);
1608: if ($home eq 'no_host') {
1609: return 'not_found';
1610: }
1611: my $answer=reply("sub:$fname",$home);
1612: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
1613: $answer.=' by '.$home;
1614: }
1615: return $answer;
1616: }
1617:
1618: # -------------------------------------------------------------- Replicate file
1619:
1620: sub repcopy {
1621: my $filename=shift;
1622: $filename=~s/\/+/\//g;
1623: if ($filename=~m|^/home/httpd/html/adm/|) { return 'ok'; }
1624: if ($filename=~m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
1625: if ($filename=~m|^/home/httpd/html/userfiles/| or
1626: $filename=~m -^/*(uploaded|editupload)/-) {
1627: return &repcopy_userfile($filename);
1628: }
1629: $filename=~s/[\n\r]//g;
1630: my $transname="$filename.in.transfer";
1631: # FIXME: this should flock
1632: if ((-e $filename) || (-e $transname)) { return 'ok'; }
1633: my $remoteurl=subscribe($filename);
1634: if ($remoteurl =~ /^con_lost by/) {
1635: &logthis("Subscribe returned $remoteurl: $filename");
1636: return 'unavailable';
1637: } elsif ($remoteurl eq 'not_found') {
1638: #&logthis("Subscribe returned not_found: $filename");
1639: return 'not_found';
1640: } elsif ($remoteurl =~ /^rejected by/) {
1641: &logthis("Subscribe returned $remoteurl: $filename");
1642: return 'forbidden';
1643: } elsif ($remoteurl eq 'directory') {
1644: return 'ok';
1645: } else {
1646: my $author=$filename;
1647: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
1648: my ($udom,$uname)=split(/\//,$author);
1649: my $home=homeserver($uname,$udom);
1650: unless ($home eq $perlvar{'lonHostID'}) {
1651: my @parts=split(/\//,$filename);
1652: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
1653: if ($path ne "$perlvar{'lonDocRoot'}/res") {
1654: &logthis("Malconfiguration for replication: $filename");
1655: return 'bad_request';
1656: }
1657: my $count;
1658: for ($count=5;$count<$#parts;$count++) {
1659: $path.="/$parts[$count]";
1660: if ((-e $path)!=1) {
1661: mkdir($path,0777);
1662: }
1663: }
1664: my $ua=new LWP::UserAgent;
1665: my $request=new HTTP::Request('GET',"$remoteurl");
1666: my $response=$ua->request($request,$transname);
1667: if ($response->is_error()) {
1668: unlink($transname);
1669: my $message=$response->status_line;
1670: &logthis("<font color=\"blue\">WARNING:"
1671: ." LWP get: $message: $filename</font>");
1672: return 'unavailable';
1673: } else {
1674: if ($remoteurl!~/\.meta$/) {
1675: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
1676: my $mresponse=$ua->request($mrequest,$filename.'.meta');
1677: if ($mresponse->is_error()) {
1678: unlink($filename.'.meta');
1679: &logthis(
1680: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
1681: }
1682: }
1683: rename($transname,$filename);
1684: return 'ok';
1685: }
1686: }
1687: }
1688: }
1689:
1690: # ------------------------------------------------ Get server side include body
1691: sub ssi_body {
1692: my ($filelink,%form)=@_;
1693: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
1694: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
1695: }
1696: my $output='';
1697: my $response;
1698: if ($filelink=~/^http\:/) {
1699: $output=&externalssi($filelink);
1700: } else {
1701: ($output,$response)=&ssi($filelink,%form);
1702: }
1703: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
1704: $output=~s/^.*?\<body[^\>]*\>//si;
1705: $output=~s/\<\/body\s*\>.*?$//si;
1706: if (wantarray) {
1707: return ($output, $response);
1708: } else {
1709: return $output;
1710: }
1711: }
1712:
1713: # --------------------------------------------------------- Server Side Include
1714:
1715: sub absolute_url {
1716: my ($host_name) = @_;
1717: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
1718: if ($host_name eq '') {
1719: $host_name = $ENV{'SERVER_NAME'};
1720: }
1721: return $protocol.$host_name;
1722: }
1723:
1724: #
1725: # Server side include.
1726: # Parameters:
1727: # fn Possibly encrypted resource name/id.
1728: # form Hash that describes how the rendering should be done
1729: # and other things.
1730: # Returns:
1731: # Scalar context: The content of the response.
1732: # Array context: 2 element list of the content and the full response object.
1733: #
1734: sub ssi {
1735:
1736: my ($fn,%form)=@_;
1737: my $ua=new LWP::UserAgent;
1738: my $request;
1739:
1740: $form{'no_update_last_known'}=1;
1741: &Apache::lonenc::check_encrypt(\$fn);
1742: if (%form) {
1743: $request=new HTTP::Request('POST',&absolute_url().$fn);
1744: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys %form));
1745: } else {
1746: $request=new HTTP::Request('GET',&absolute_url().$fn);
1747: }
1748:
1749: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
1750: my $response=$ua->request($request);
1751:
1752: if (wantarray) {
1753: return ($response->content, $response);
1754: } else {
1755: return $response->content;
1756: }
1757: }
1758:
1759: sub externalssi {
1760: my ($url)=@_;
1761: my $ua=new LWP::UserAgent;
1762: my $request=new HTTP::Request('GET',$url);
1763: my $response=$ua->request($request);
1764: return $response->content;
1765: }
1766:
1767: # -------------------------------- Allow a /uploaded/ URI to be vouched for
1768:
1769: sub allowuploaded {
1770: my ($srcurl,$url)=@_;
1771: $url=&clutter(&declutter($url));
1772: my $dir=$url;
1773: $dir=~s/\/[^\/]+$//;
1774: my %httpref=();
1775: my $httpurl=&hreflocation('',$url);
1776: $httpref{'httpref.'.$httpurl}=$srcurl;
1777: &Apache::lonnet::appenv(\%httpref);
1778: }
1779:
1780: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
1781: # input: action, courseID, current domain, intended
1782: # path to file, source of file, instruction to parse file for objects,
1783: # ref to hash for embedded objects,
1784: # ref to hash for codebase of java objects.
1785: #
1786: # output: url to file (if action was uploaddoc),
1787: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
1788: #
1789: # Allows directory structure to be used within lonUsers/../userfiles/ for a
1790: # course.
1791: #
1792: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1793: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
1794: # course's home server.
1795: #
1796: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
1797: # be copied from $source (current location) to
1798: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1799: # and will then be copied to
1800: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
1801: # course's home server.
1802: #
1803: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1804: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
1805: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
1806: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
1807: # in course's home server.
1808: #
1809:
1810: sub process_coursefile {
1811: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase)=@_;
1812: my $fetchresult;
1813: my $home=&homeserver($docuname,$docudom);
1814: if ($action eq 'propagate') {
1815: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1816: $home);
1817: } else {
1818: my $fpath = '';
1819: my $fname = $file;
1820: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
1821: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
1822: my $filepath = &build_filepath($fpath);
1823: if ($action eq 'copy') {
1824: if ($source eq '') {
1825: $fetchresult = 'no source file';
1826: return $fetchresult;
1827: } else {
1828: my $destination = $filepath.'/'.$fname;
1829: rename($source,$destination);
1830: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1831: $home);
1832: }
1833: } elsif ($action eq 'uploaddoc') {
1834: open(my $fh,'>'.$filepath.'/'.$fname);
1835: print $fh $env{'form.'.$source};
1836: close($fh);
1837: if ($parser eq 'parse') {
1838: my $parse_result = &extract_embedded_items($filepath,$fname,$allfiles,$codebase);
1839: unless ($parse_result eq 'ok') {
1840: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
1841: }
1842: }
1843: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1844: $home);
1845: if ($fetchresult eq 'ok') {
1846: return '/uploaded/'.$fpath.'/'.$fname;
1847: } else {
1848: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1849: ' to host '.$home.': '.$fetchresult);
1850: return '/adm/notfound.html';
1851: }
1852: }
1853: }
1854: unless ( $fetchresult eq 'ok') {
1855: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1856: ' to host '.$home.': '.$fetchresult);
1857: }
1858: return $fetchresult;
1859: }
1860:
1861: sub build_filepath {
1862: my ($fpath) = @_;
1863: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
1864: unless ($fpath eq '') {
1865: my @parts=split('/',$fpath);
1866: foreach my $part (@parts) {
1867: $filepath.= '/'.$part;
1868: if ((-e $filepath)!=1) {
1869: mkdir($filepath,0777);
1870: }
1871: }
1872: }
1873: return $filepath;
1874: }
1875:
1876: sub store_edited_file {
1877: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
1878: my $file = $primary_url;
1879: $file =~ s#^/uploaded/$docudom/$docuname/##;
1880: my $fpath = '';
1881: my $fname = $file;
1882: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
1883: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
1884: my $filepath = &build_filepath($fpath);
1885: open(my $fh,'>'.$filepath.'/'.$fname);
1886: print $fh $content;
1887: close($fh);
1888: my $home=&homeserver($docuname,$docudom);
1889: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
1890: $home);
1891: if ($$fetchresult eq 'ok') {
1892: return '/uploaded/'.$fpath.'/'.$fname;
1893: } else {
1894: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
1895: ' to host '.$home.': '.$$fetchresult);
1896: return '/adm/notfound.html';
1897: }
1898: }
1899:
1900: sub clean_filename {
1901: my ($fname,$args)=@_;
1902: # Replace Windows backslashes by forward slashes
1903: $fname=~s/\\/\//g;
1904: if (!$args->{'keep_path'}) {
1905: # Get rid of everything but the actual filename
1906: $fname=~s/^.*\/([^\/]+)$/$1/;
1907: }
1908: # Replace spaces by underscores
1909: $fname=~s/\s+/\_/g;
1910: # Replace all other weird characters by nothing
1911: $fname=~s{[^/\w\.\-]}{}g;
1912: # Replace all .\d. sequences with _\d. so they no longer look like version
1913: # numbers
1914: $fname=~s/\.(\d+)(?=\.)/_$1/g;
1915: return $fname;
1916: }
1917:
1918: # --------------- Take an uploaded file and put it into the userfiles directory
1919: # input: $formname - the contents of the file are in $env{"form.$formname"}
1920: # the desired filenam is in $env{"form.$formname.filename"}
1921: # $coursedoc - if true up to the current course
1922: # if false
1923: # $subdir - directory in userfile to store the file into
1924: # $parser - instruction to parse file for objects ($parser = parse)
1925: # $allfiles - reference to hash for embedded objects
1926: # $codebase - reference to hash for codebase of java objects
1927: # $desuname - username for permanent storage of uploaded file
1928: # $dsetudom - domain for permanaent storage of uploaded file
1929: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
1930: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
1931: #
1932: # output: url of file in userspace, or error: <message>
1933: # or /adm/notfound.html if failure to upload occurse
1934:
1935:
1936: sub userfileupload {
1937: my ($formname,$coursedoc,$subdir,$parser,$allfiles,$codebase,$destuname,
1938: $destudom,$thumbwidth,$thumbheight)=@_;
1939: if (!defined($subdir)) { $subdir='unknown'; }
1940: my $fname=$env{'form.'.$formname.'.filename'};
1941: $fname=&clean_filename($fname);
1942: # See if there is anything left
1943: unless ($fname) { return 'error: no uploaded file'; }
1944: chop($env{'form.'.$formname});
1945: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) { #files uploaded to help request form are handled differently
1946: my $now = time;
1947: my $filepath = 'tmp/helprequests/'.$now;
1948: my @parts=split(/\//,$filepath);
1949: my $fullpath = $perlvar{'lonDaemons'};
1950: for (my $i=0;$i<@parts;$i++) {
1951: $fullpath .= '/'.$parts[$i];
1952: if ((-e $fullpath)!=1) {
1953: mkdir($fullpath,0777);
1954: }
1955: }
1956: open(my $fh,'>'.$fullpath.'/'.$fname);
1957: print $fh $env{'form.'.$formname};
1958: close($fh);
1959: return $fullpath.'/'.$fname;
1960: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) { #files uploaded to create course page are handled differently
1961: my $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
1962: '_'.$env{'user.domain'}.'/pending';
1963: my @parts=split(/\//,$filepath);
1964: my $fullpath = $perlvar{'lonDaemons'};
1965: for (my $i=0;$i<@parts;$i++) {
1966: $fullpath .= '/'.$parts[$i];
1967: if ((-e $fullpath)!=1) {
1968: mkdir($fullpath,0777);
1969: }
1970: }
1971: open(my $fh,'>'.$fullpath.'/'.$fname);
1972: print $fh $env{'form.'.$formname};
1973: close($fh);
1974: return $fullpath.'/'.$fname;
1975: }
1976:
1977: # Create the directory if not present
1978: $fname="$subdir/$fname";
1979: if ($coursedoc) {
1980: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
1981: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1982: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
1983: return &finishuserfileupload($docuname,$docudom,
1984: $formname,$fname,$parser,$allfiles,
1985: $codebase,$thumbwidth,$thumbheight);
1986: } else {
1987: $fname=$env{'form.folder'}.'/'.$fname;
1988: return &process_coursefile('uploaddoc',$docuname,$docudom,
1989: $fname,$formname,$parser,
1990: $allfiles,$codebase);
1991: }
1992: } elsif (defined($destuname)) {
1993: my $docuname=$destuname;
1994: my $docudom=$destudom;
1995: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
1996: $parser,$allfiles,$codebase,
1997: $thumbwidth,$thumbheight);
1998:
1999: } else {
2000: my $docuname=$env{'user.name'};
2001: my $docudom=$env{'user.domain'};
2002: if (exists($env{'form.group'})) {
2003: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
2004: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2005: }
2006: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
2007: $parser,$allfiles,$codebase,
2008: $thumbwidth,$thumbheight);
2009: }
2010: }
2011:
2012: sub finishuserfileupload {
2013: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
2014: $thumbwidth,$thumbheight) = @_;
2015: my $path=$docudom.'/'.$docuname.'/';
2016: my $filepath=$perlvar{'lonDocRoot'};
2017: my ($fnamepath,$file,$fetchthumb);
2018: $file=$fname;
2019: if ($fname=~m|/|) {
2020: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
2021: $path.=$fnamepath.'/';
2022: }
2023: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
2024: my $count;
2025: for ($count=4;$count<=$#parts;$count++) {
2026: $filepath.="/$parts[$count]";
2027: if ((-e $filepath)!=1) {
2028: mkdir($filepath,0777);
2029: }
2030: }
2031: # Save the file
2032: {
2033: if (!open(FH,'>'.$filepath.'/'.$file)) {
2034: &logthis('Failed to create '.$filepath.'/'.$file);
2035: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
2036: return '/adm/notfound.html';
2037: }
2038: if (!print FH ($env{'form.'.$formname})) {
2039: &logthis('Failed to write to '.$filepath.'/'.$file);
2040: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
2041: return '/adm/notfound.html';
2042: }
2043: close(FH);
2044: }
2045: if ($parser eq 'parse') {
2046: my $parse_result = &extract_embedded_items($filepath,$file,$allfiles,
2047: $codebase);
2048: unless ($parse_result eq 'ok') {
2049: &logthis('Failed to parse '.$filepath.$file.
2050: ' for embedded media: '.$parse_result);
2051: }
2052: }
2053: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
2054: my $input = $filepath.'/'.$file;
2055: my $output = $filepath.'/'.'tn-'.$file;
2056: my $thumbsize = $thumbwidth.'x'.$thumbheight;
2057: system("convert -sample $thumbsize $input $output");
2058: if (-e $filepath.'/'.'tn-'.$file) {
2059: $fetchthumb = 1;
2060: }
2061: }
2062:
2063: # Notify homeserver to grep it
2064: #
2065: my $docuhome=&homeserver($docuname,$docudom);
2066: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
2067: if ($fetchresult eq 'ok') {
2068: if ($fetchthumb) {
2069: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
2070: if ($thumbresult ne 'ok') {
2071: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
2072: $docuhome.': '.$thumbresult);
2073: }
2074: }
2075: #
2076: # Return the URL to it
2077: return '/uploaded/'.$path.$file;
2078: } else {
2079: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
2080: ': '.$fetchresult);
2081: return '/adm/notfound.html';
2082: }
2083: }
2084:
2085: sub extract_embedded_items {
2086: my ($filepath,$file,$allfiles,$codebase,$content) = @_;
2087: my @state = ();
2088: my %javafiles = (
2089: codebase => '',
2090: code => '',
2091: archive => ''
2092: );
2093: my %mediafiles = (
2094: src => '',
2095: movie => '',
2096: );
2097: my $p;
2098: if ($content) {
2099: $p = HTML::LCParser->new($content);
2100: } else {
2101: $p = HTML::LCParser->new($filepath.'/'.$file);
2102: }
2103: while (my $t=$p->get_token()) {
2104: if ($t->[0] eq 'S') {
2105: my ($tagname, $attr) = ($t->[1],$t->[2]);
2106: push(@state, $tagname);
2107: if (lc($tagname) eq 'allow') {
2108: &add_filetype($allfiles,$attr->{'src'},'src');
2109: }
2110: if (lc($tagname) eq 'img') {
2111: &add_filetype($allfiles,$attr->{'src'},'src');
2112: }
2113: if (lc($tagname) eq 'a') {
2114: &add_filetype($allfiles,$attr->{'href'},'href');
2115: }
2116: if (lc($tagname) eq 'script') {
2117: if ($attr->{'archive'} =~ /\.jar$/i) {
2118: &add_filetype($allfiles,$attr->{'archive'},'archive');
2119: } else {
2120: &add_filetype($allfiles,$attr->{'src'},'src');
2121: }
2122: }
2123: if (lc($tagname) eq 'link') {
2124: if (lc($attr->{'rel'}) eq 'stylesheet') {
2125: &add_filetype($allfiles,$attr->{'href'},'href');
2126: }
2127: }
2128: if (lc($tagname) eq 'object' ||
2129: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
2130: foreach my $item (keys(%javafiles)) {
2131: $javafiles{$item} = '';
2132: }
2133: }
2134: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
2135: my $name = lc($attr->{'name'});
2136: foreach my $item (keys(%javafiles)) {
2137: if ($name eq $item) {
2138: $javafiles{$item} = $attr->{'value'};
2139: last;
2140: }
2141: }
2142: foreach my $item (keys(%mediafiles)) {
2143: if ($name eq $item) {
2144: &add_filetype($allfiles, $attr->{'value'}, 'value');
2145: last;
2146: }
2147: }
2148: }
2149: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
2150: foreach my $item (keys(%javafiles)) {
2151: if ($attr->{$item}) {
2152: $javafiles{$item} = $attr->{$item};
2153: last;
2154: }
2155: }
2156: foreach my $item (keys(%mediafiles)) {
2157: if ($attr->{$item}) {
2158: &add_filetype($allfiles,$attr->{$item},$item);
2159: last;
2160: }
2161: }
2162: }
2163: } elsif ($t->[0] eq 'E') {
2164: my ($tagname) = ($t->[1]);
2165: if ($javafiles{'codebase'} ne '') {
2166: $javafiles{'codebase'} .= '/';
2167: }
2168: if (lc($tagname) eq 'applet' ||
2169: lc($tagname) eq 'object' ||
2170: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
2171: ) {
2172: foreach my $item (keys(%javafiles)) {
2173: if ($item ne 'codebase' && $javafiles{$item} ne '') {
2174: my $file=$javafiles{'codebase'}.$javafiles{$item};
2175: &add_filetype($allfiles,$file,$item);
2176: }
2177: }
2178: }
2179: pop @state;
2180: }
2181: }
2182: return 'ok';
2183: }
2184:
2185: sub add_filetype {
2186: my ($allfiles,$file,$type)=@_;
2187: if (exists($allfiles->{$file})) {
2188: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
2189: push(@{$allfiles->{$file}}, &escape($type));
2190: }
2191: } else {
2192: @{$allfiles->{$file}} = (&escape($type));
2193: }
2194: }
2195:
2196: sub removeuploadedurl {
2197: my ($url)=@_;
2198: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
2199: return &removeuserfile($uname,$udom,$fname);
2200: }
2201:
2202: sub removeuserfile {
2203: my ($docuname,$docudom,$fname)=@_;
2204: my $home=&homeserver($docuname,$docudom);
2205: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
2206: if ($result eq 'ok') {
2207: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
2208: my $metafile = $fname.'.meta';
2209: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
2210: my $url = "/uploaded/$docudom/$docuname/$fname";
2211: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2212: my $sqlresult =
2213: &update_portfolio_table($docuname,$docudom,$file,
2214: 'portfolio_metadata',$group,
2215: 'delete');
2216: }
2217: }
2218: return $result;
2219: }
2220:
2221: sub mkdiruserfile {
2222: my ($docuname,$docudom,$dir)=@_;
2223: my $home=&homeserver($docuname,$docudom);
2224: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
2225: }
2226:
2227: sub renameuserfile {
2228: my ($docuname,$docudom,$old,$new)=@_;
2229: my $home=&homeserver($docuname,$docudom);
2230: my $result = &reply("renameuserfile:$docudom:$docuname:".
2231: &escape("$old").':'.&escape("$new"),$home);
2232: if ($result eq 'ok') {
2233: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
2234: my $oldmeta = $old.'.meta';
2235: my $newmeta = $new.'.meta';
2236: my $metaresult =
2237: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
2238: my $url = "/uploaded/$docudom/$docuname/$old";
2239: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
2240: my $sqlresult =
2241: &update_portfolio_table($docuname,$docudom,$file,
2242: 'portfolio_metadata',$group,
2243: 'delete');
2244: }
2245: }
2246: return $result;
2247: }
2248:
2249: # ------------------------------------------------------------------------- Log
2250:
2251: sub log {
2252: my ($dom,$nam,$hom,$what)=@_;
2253: return critical("log:$dom:$nam:$what",$hom);
2254: }
2255:
2256: # ------------------------------------------------------------------ Course Log
2257: #
2258: # This routine flushes several buffers of non-mission-critical nature
2259: #
2260:
2261: sub flushcourselogs {
2262: &logthis('Flushing log buffers');
2263: #
2264: # course logs
2265: # This is a log of all transactions in a course, which can be used
2266: # for data mining purposes
2267: #
2268: # It also collects the courseid database, which lists last transaction
2269: # times and course titles for all courseids
2270: #
2271: my %courseidbuffer=();
2272: foreach my $crsid (keys(%courselogs)) {
2273: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
2274: &escape($courselogs{$crsid}),
2275: $coursehombuf{$crsid}) eq 'ok') {
2276: delete $courselogs{$crsid};
2277: } else {
2278: &logthis('Failed to flush log buffer for '.$crsid);
2279: if (length($courselogs{$crsid})>40000) {
2280: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
2281: " exceeded maximum size, deleting.</font>");
2282: delete $courselogs{$crsid};
2283: }
2284: }
2285: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
2286: 'description' => $coursedescrbuf{$crsid},
2287: 'inst_code' => $courseinstcodebuf{$crsid},
2288: 'type' => $coursetypebuf{$crsid},
2289: 'owner' => $courseownerbuf{$crsid},
2290: };
2291: }
2292: #
2293: # Write course id database (reverse lookup) to homeserver of courses
2294: # Is used in pickcourse
2295: #
2296: foreach my $crs_home (keys(%courseidbuffer)) {
2297: my $response = &courseidput(&host_domain($crs_home),
2298: $courseidbuffer{$crs_home},
2299: $crs_home,'timeonly');
2300: }
2301: #
2302: # File accesses
2303: # Writes to the dynamic metadata of resources to get hit counts, etc.
2304: #
2305: foreach my $entry (keys(%accesshash)) {
2306: if ($entry =~ /___count$/) {
2307: my ($dom,$name);
2308: ($dom,$name,undef)=
2309: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
2310: if (! defined($dom) || $dom eq '' ||
2311: ! defined($name) || $name eq '') {
2312: my $cid = $env{'request.course.id'};
2313: $dom = $env{'request.'.$cid.'.domain'};
2314: $name = $env{'request.'.$cid.'.num'};
2315: }
2316: my $value = $accesshash{$entry};
2317: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
2318: my %temphash=($url => $value);
2319: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
2320: if ($result eq 'ok') {
2321: delete $accesshash{$entry};
2322: } elsif ($result eq 'unknown_cmd') {
2323: # Target server has old code running on it.
2324: my %temphash=($entry => $value);
2325: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2326: delete $accesshash{$entry};
2327: }
2328: }
2329: } else {
2330: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
2331: my %temphash=($entry => $accesshash{$entry});
2332: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
2333: delete $accesshash{$entry};
2334: }
2335: }
2336: }
2337: #
2338: # Roles
2339: # Reverse lookup of user roles for course faculty/staff and co-authorship
2340: #
2341: foreach my $entry (keys(%userrolehash)) {
2342: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
2343: split(/\:/,$entry);
2344: if (&Apache::lonnet::put('nohist_userroles',
2345: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
2346: $rudom,$runame) eq 'ok') {
2347: delete $userrolehash{$entry};
2348: }
2349: }
2350: #
2351: # Reverse lookup of domain roles (dc, ad, li, sc, au)
2352: #
2353: my %domrolebuffer = ();
2354: foreach my $entry (keys %domainrolehash) {
2355: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
2356: if ($domrolebuffer{$rudom}) {
2357: $domrolebuffer{$rudom}.='&'.&escape($entry).
2358: '='.&escape($domainrolehash{$entry});
2359: } else {
2360: $domrolebuffer{$rudom}.=&escape($entry).
2361: '='.&escape($domainrolehash{$entry});
2362: }
2363: delete $domainrolehash{$entry};
2364: }
2365: foreach my $dom (keys(%domrolebuffer)) {
2366: my %servers = &get_servers($dom,'library');
2367: foreach my $tryserver (keys(%servers)) {
2368: unless (&reply('domroleput:'.$dom.':'.
2369: $domrolebuffer{$dom},$tryserver) eq 'ok') {
2370: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
2371: }
2372: }
2373: }
2374: $dumpcount++;
2375: }
2376:
2377: sub courselog {
2378: my $what=shift;
2379: $what=time.':'.$what;
2380: unless ($env{'request.course.id'}) { return ''; }
2381: $coursedombuf{$env{'request.course.id'}}=
2382: $env{'course.'.$env{'request.course.id'}.'.domain'};
2383: $coursenumbuf{$env{'request.course.id'}}=
2384: $env{'course.'.$env{'request.course.id'}.'.num'};
2385: $coursehombuf{$env{'request.course.id'}}=
2386: $env{'course.'.$env{'request.course.id'}.'.home'};
2387: $coursedescrbuf{$env{'request.course.id'}}=
2388: $env{'course.'.$env{'request.course.id'}.'.description'};
2389: $courseinstcodebuf{$env{'request.course.id'}}=
2390: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
2391: $courseownerbuf{$env{'request.course.id'}}=
2392: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
2393: $coursetypebuf{$env{'request.course.id'}}=
2394: $env{'course.'.$env{'request.course.id'}.'.type'};
2395: if (defined $courselogs{$env{'request.course.id'}}) {
2396: $courselogs{$env{'request.course.id'}}.='&'.$what;
2397: } else {
2398: $courselogs{$env{'request.course.id'}}.=$what;
2399: }
2400: if (length($courselogs{$env{'request.course.id'}})>4048) {
2401: &flushcourselogs();
2402: }
2403: }
2404:
2405: sub courseacclog {
2406: my $fnsymb=shift;
2407: unless ($env{'request.course.id'}) { return ''; }
2408: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
2409: if ($fnsymb=~/(problem|exam|quiz|assess|survey|form|task|page)$/) {
2410: $what.=':POST';
2411: # FIXME: Probably ought to escape things....
2412: foreach my $key (keys(%env)) {
2413: if ($key=~/^form\.(.*)/) {
2414: $what.=':'.$1.'='.$env{$key};
2415: }
2416: }
2417: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
2418: # FIXME: We should not be depending on a form parameter that someone
2419: # editing lonsearchcat.pm might change in the future.
2420: if ($env{'form.phase'} eq 'course_search') {
2421: $what.= ':POST';
2422: # FIXME: Probably ought to escape things....
2423: foreach my $element ('courseexp','crsfulltext','crsrelated',
2424: 'crsdiscuss') {
2425: $what.=':'.$element.'='.$env{'form.'.$element};
2426: }
2427: }
2428: }
2429: &courselog($what);
2430: }
2431:
2432: sub countacc {
2433: my $url=&declutter(shift);
2434: return if (! defined($url) || $url eq '');
2435: unless ($env{'request.course.id'}) { return ''; }
2436: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
2437: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
2438: $accesshash{$key}++;
2439: }
2440:
2441: sub linklog {
2442: my ($from,$to)=@_;
2443: $from=&declutter($from);
2444: $to=&declutter($to);
2445: $accesshash{$from.'___'.$to.'___comefrom'}=1;
2446: $accesshash{$to.'___'.$from.'___goto'}=1;
2447: }
2448:
2449: sub userrolelog {
2450: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
2451: if (($trole=~/^ca/) || ($trole=~/^aa/) ||
2452: ($trole=~/^in/) || ($trole=~/^cc/) ||
2453: ($trole=~/^ep/) || ($trole=~/^cr/) ||
2454: ($trole=~/^ta/)) {
2455: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2456: $userrolehash
2457: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2458: =$tend.':'.$tstart;
2459: }
2460: if (($env{'request.role'} =~ /dc\./) &&
2461: (($trole=~/^au/) || ($trole=~/^in/) ||
2462: ($trole=~/^cc/) || ($trole=~/^ep/) ||
2463: ($trole=~/^cr/) || ($trole=~/^ta/))) {
2464: $userrolehash
2465: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
2466: =$tend.':'.$tstart;
2467: }
2468: if (($trole=~/^dc/) || ($trole=~/^ad/) ||
2469: ($trole=~/^li/) || ($trole=~/^li/) ||
2470: ($trole=~/^au/) || ($trole=~/^dg/) ||
2471: ($trole=~/^sc/)) {
2472: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
2473: $domainrolehash
2474: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
2475: = $tend.':'.$tstart;
2476: }
2477: }
2478:
2479: sub get_course_adv_roles {
2480: my ($cid,$codes) = @_;
2481: $cid=$env{'request.course.id'} unless (defined($cid));
2482: my %coursehash=&coursedescription($cid);
2483: my %nothide=();
2484: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2485: if ($user !~ /:/) {
2486: $nothide{join(':',split(/[\@]/,$user))}=1;
2487: } else {
2488: $nothide{$user}=1;
2489: }
2490: }
2491: my %returnhash=();
2492: my %dumphash=
2493: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
2494: my $now=time;
2495: foreach my $entry (keys %dumphash) {
2496: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
2497: if (($tstart) && ($tstart<0)) { next; }
2498: if (($tend) && ($tend<$now)) { next; }
2499: if (($tstart) && ($now<$tstart)) { next; }
2500: my ($role,$username,$domain,$section)=split(/\:/,$entry);
2501: if ($username eq '' || $domain eq '') { next; }
2502: if ((&privileged($username,$domain)) &&
2503: (!$nothide{$username.':'.$domain})) { next; }
2504: if ($role eq 'cr') { next; }
2505: if ($codes) {
2506: if ($section) { $role .= ':'.$section; }
2507: if ($returnhash{$role}) {
2508: $returnhash{$role}.=','.$username.':'.$domain;
2509: } else {
2510: $returnhash{$role}=$username.':'.$domain;
2511: }
2512: } else {
2513: my $key=&plaintext($role);
2514: if ($section) { $key.=' (Section '.$section.')'; }
2515: if ($returnhash{$key}) {
2516: $returnhash{$key}.=','.$username.':'.$domain;
2517: } else {
2518: $returnhash{$key}=$username.':'.$domain;
2519: }
2520: }
2521: }
2522: return %returnhash;
2523: }
2524:
2525: sub get_my_roles {
2526: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
2527: unless (defined($uname)) { $uname=$env{'user.name'}; }
2528: unless (defined($udom)) { $udom=$env{'user.domain'}; }
2529: my (%dumphash,%nothide);
2530: if ($context eq 'userroles') {
2531: %dumphash = &dump('roles',$udom,$uname);
2532: } else {
2533: %dumphash=
2534: &dump('nohist_userroles',$udom,$uname);
2535: if ($hidepriv) {
2536: my %coursehash=&coursedescription($udom.'_'.$uname);
2537: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
2538: if ($user !~ /:/) {
2539: $nothide{join(':',split(/[\@]/,$user))} = 1;
2540: } else {
2541: $nothide{$user} = 1;
2542: }
2543: }
2544: }
2545: }
2546: my %returnhash=();
2547: my $now=time;
2548: foreach my $entry (keys(%dumphash)) {
2549: my ($role,$tend,$tstart);
2550: if ($context eq 'userroles') {
2551: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
2552: } else {
2553: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
2554: }
2555: if (($tstart) && ($tstart<0)) { next; }
2556: my $status = 'active';
2557: if (($tend) && ($tend<=$now)) {
2558: $status = 'previous';
2559: }
2560: if (($tstart) && ($now<$tstart)) {
2561: $status = 'future';
2562: }
2563: if (ref($types) eq 'ARRAY') {
2564: if (!grep(/^\Q$status\E$/,@{$types})) {
2565: next;
2566: }
2567: } else {
2568: if ($status ne 'active') {
2569: next;
2570: }
2571: }
2572: my ($rolecode,$username,$domain,$section,$area);
2573: if ($context eq 'userroles') {
2574: ($area,$rolecode) = split(/_/,$entry);
2575: (undef,$domain,$username,$section) = split(/\//,$area);
2576: } else {
2577: ($role,$username,$domain,$section) = split(/\:/,$entry);
2578: }
2579: if (ref($roledoms) eq 'ARRAY') {
2580: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
2581: next;
2582: }
2583: }
2584: if (ref($roles) eq 'ARRAY') {
2585: if (!grep(/^\Q$role\E$/,@{$roles})) {
2586: if ($role =~ /^cr\//) {
2587: if (!grep(/^cr$/,@{$roles})) {
2588: next;
2589: }
2590: } else {
2591: next;
2592: }
2593: }
2594: }
2595: if ($hidepriv) {
2596: if ((&privileged($username,$domain)) &&
2597: (!$nothide{$username.':'.$domain})) {
2598: next;
2599: }
2600: }
2601: if ($withsec) {
2602: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
2603: $tstart.':'.$tend;
2604: } else {
2605: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
2606: }
2607: }
2608: return %returnhash;
2609: }
2610:
2611: # ----------------------------------------------------- Frontpage Announcements
2612: #
2613: #
2614:
2615: sub postannounce {
2616: my ($server,$text)=@_;
2617: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
2618: unless ($text=~/\w/) { $text=''; }
2619: return &reply('setannounce:'.&escape($text),$server);
2620: }
2621:
2622: sub getannounce {
2623:
2624: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
2625: my $announcement='';
2626: while (my $line = <$fh>) { $announcement .= $line; }
2627: close($fh);
2628: if ($announcement=~/\w/) {
2629: return
2630: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
2631: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
2632: } else {
2633: return '';
2634: }
2635: } else {
2636: return '';
2637: }
2638: }
2639:
2640: # ---------------------------------------------------------- Course ID routines
2641: # Deal with domain's nohist_courseid.db files
2642: #
2643:
2644: sub courseidput {
2645: my ($domain,$storehash,$coursehome,$caller) = @_;
2646: my $outcome;
2647: if ($caller eq 'timeonly') {
2648: my $cids = '';
2649: foreach my $item (keys(%$storehash)) {
2650: $cids.=&escape($item).'&';
2651: }
2652: $cids=~s/\&$//;
2653: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
2654: $coursehome);
2655: } else {
2656: my $items = '';
2657: foreach my $item (keys(%$storehash)) {
2658: $items.= &escape($item).'='.
2659: &freeze_escape($$storehash{$item}).'&';
2660: }
2661: $items=~s/\&$//;
2662: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
2663: $coursehome);
2664: }
2665: if ($outcome eq 'unknown_cmd') {
2666: my $what;
2667: foreach my $cid (keys(%$storehash)) {
2668: $what .= &escape($cid).'=';
2669: foreach my $item ('description','inst_code','owner','type') {
2670: $what .= &escape($storehash->{$cid}{$item}).':';
2671: }
2672: $what =~ s/\:$/&/;
2673: }
2674: $what =~ s/\&$//;
2675: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
2676: } else {
2677: return $outcome;
2678: }
2679: }
2680:
2681: sub courseiddump {
2682: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
2683: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
2684: $selfenrollonly)=@_;
2685: my $as_hash = 1;
2686: my %returnhash;
2687: if (!$domfilter) { $domfilter=''; }
2688: my %libserv = &all_library();
2689: foreach my $tryserver (keys(%libserv)) {
2690: if ( ( $hostidflag == 1
2691: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
2692: || (!defined($hostidflag)) ) {
2693:
2694: if (($domfilter eq '') ||
2695: (&host_domain($tryserver) eq $domfilter)) {
2696: my $rep =
2697: &reply('courseiddump:'.&host_domain($tryserver).':'.
2698: $sincefilter.':'.&escape($descfilter).':'.
2699: &escape($instcodefilter).':'.&escape($ownerfilter).
2700: ':'.&escape($coursefilter).':'.&escape($typefilter).
2701: ':'.&escape($regexp_ok).':'.$as_hash.':'.
2702: &escape($selfenrollonly),$tryserver);
2703: my @pairs=split(/\&/,$rep);
2704: foreach my $item (@pairs) {
2705: my ($key,$value)=split(/\=/,$item,2);
2706: $key = &unescape($key);
2707: next if ($key =~ /^error: 2 /);
2708: my $result = &thaw_unescape($value);
2709: if (ref($result) eq 'HASH') {
2710: $returnhash{$key}=$result;
2711: } else {
2712: my @responses = split(/:/,$value);
2713: my @items = ('description','inst_code','owner','type');
2714: for (my $i=0; $i<@responses; $i++) {
2715: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
2716: }
2717: }
2718: }
2719: }
2720: }
2721: }
2722: return %returnhash;
2723: }
2724:
2725: # ---------------------------------------------------------- DC e-mail
2726:
2727: sub dcmailput {
2728: my ($domain,$msgid,$message,$server)=@_;
2729: my $status = &Apache::lonnet::critical(
2730: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
2731: &escape($message),$server);
2732: return $status;
2733: }
2734:
2735: sub dcmaildump {
2736: my ($dom,$startdate,$enddate,$senders) = @_;
2737: my %returnhash=();
2738:
2739: if (defined(&domain($dom,'primary'))) {
2740: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
2741: &escape($enddate).':';
2742: my @esc_senders=map { &escape($_)} @$senders;
2743: $cmd.=&escape(join('&',@esc_senders));
2744: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
2745: my ($key,$value) = split(/\=/,$line,2);
2746: if (($key) && ($value)) {
2747: $returnhash{&unescape($key)} = &unescape($value);
2748: }
2749: }
2750: }
2751: return %returnhash;
2752: }
2753: # ---------------------------------------------------------- Domain roles
2754:
2755: sub get_domain_roles {
2756: my ($dom,$roles,$startdate,$enddate)=@_;
2757: if (undef($startdate) || $startdate eq '') {
2758: $startdate = '.';
2759: }
2760: if (undef($enddate) || $enddate eq '') {
2761: $enddate = '.';
2762: }
2763: my $rolelist;
2764: if (ref($roles) eq 'ARRAY') {
2765: $rolelist = join(':',@{$roles});
2766: }
2767: my %personnel = ();
2768:
2769: my %servers = &get_servers($dom,'library');
2770: foreach my $tryserver (keys(%servers)) {
2771: %{$personnel{$tryserver}}=();
2772: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
2773: &escape($startdate).':'.
2774: &escape($enddate).':'.
2775: &escape($rolelist), $tryserver))) {
2776: my ($key,$value) = split(/\=/,$line,2);
2777: if (($key) && ($value)) {
2778: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
2779: }
2780: }
2781: }
2782: return %personnel;
2783: }
2784:
2785: # ----------------------------------------------------------- Check out an item
2786:
2787: sub get_first_access {
2788: my ($type,$argsymb)=@_;
2789: my ($symb,$courseid,$udom,$uname)=&whichuser();
2790: if ($argsymb) { $symb=$argsymb; }
2791: my ($map,$id,$res)=&decode_symb($symb);
2792: if ($type eq 'course') {
2793: $res='course';
2794: } elsif ($type eq 'map') {
2795: $res=&symbread($map);
2796: } else {
2797: $res=$symb;
2798: }
2799: my %times=&get('firstaccesstimes',["$courseid\0$res"],$udom,$uname);
2800: return $times{"$courseid\0$res"};
2801: }
2802:
2803: sub set_first_access {
2804: my ($type)=@_;
2805: my ($symb,$courseid,$udom,$uname)=&whichuser();
2806: my ($map,$id,$res)=&decode_symb($symb);
2807: if ($type eq 'course') {
2808: $res='course';
2809: } elsif ($type eq 'map') {
2810: $res=&symbread($map);
2811: } else {
2812: $res=$symb;
2813: }
2814: my $firstaccess=&get_first_access($type,$symb);
2815: if (!$firstaccess) {
2816: return &put('firstaccesstimes',{"$courseid\0$res"=>time},$udom,$uname);
2817: }
2818: return 'already_set';
2819: }
2820:
2821: sub checkout {
2822: my ($symb,$tuname,$tudom,$tcrsid)=@_;
2823: my $now=time;
2824: my $lonhost=$perlvar{'lonHostID'};
2825: my $infostr=&escape(
2826: 'CHECKOUTTOKEN&'.
2827: $tuname.'&'.
2828: $tudom.'&'.
2829: $tcrsid.'&'.
2830: $symb.'&'.
2831: $now.'&'.$ENV{'REMOTE_ADDR'});
2832: my $token=&reply('tmpput:'.$infostr,$lonhost);
2833: if ($token=~/^error\:/) {
2834: &logthis("<font color=\"blue\">WARNING: ".
2835: "Checkout tmpput failed ".$tudom.' - '.$tuname.' - '.$symb.
2836: "</font>");
2837: return '';
2838: }
2839:
2840: $token=~s/^(\d+)\_.*\_(\d+)$/$1\*$2\*$lonhost/;
2841: $token=~tr/a-z/A-Z/;
2842:
2843: my %infohash=('resource.0.outtoken' => $token,
2844: 'resource.0.checkouttime' => $now,
2845: 'resource.0.outremote' => $ENV{'REMOTE_ADDR'});
2846:
2847: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
2848: return '';
2849: } else {
2850: &logthis("<font color=\"blue\">WARNING: ".
2851: "Checkout cstore failed ".$tudom.' - '.$tuname.' - '.$symb.
2852: "</font>");
2853: }
2854:
2855: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
2856: &escape('Checkout '.$infostr.' - '.
2857: $token)) ne 'ok') {
2858: return '';
2859: } else {
2860: &logthis("<font color=\"blue\">WARNING: ".
2861: "Checkout log failed ".$tudom.' - '.$tuname.' - '.$symb.
2862: "</font>");
2863: }
2864: return $token;
2865: }
2866:
2867: # ------------------------------------------------------------ Check in an item
2868:
2869: sub checkin {
2870: my $token=shift;
2871: my $now=time;
2872: my ($ta,$tb,$lonhost)=split(/\*/,$token);
2873: $lonhost=~tr/A-Z/a-z/;
2874: my $dtoken=$ta.'_'.&hostname($lonhost).'_'.$tb;
2875: $dtoken=~s/\W/\_/g;
2876: my ($dummy,$tuname,$tudom,$tcrsid,$symb,$chtim,$rmaddr)=
2877: split(/\&/,&unescape(&reply('tmpget:'.$dtoken,$lonhost)));
2878:
2879: unless (($tuname) && ($tudom)) {
2880: &logthis('Check in '.$token.' ('.$dtoken.') failed');
2881: return '';
2882: }
2883:
2884: unless (&allowed('mgr',$tcrsid)) {
2885: &logthis('Check in '.$token.' ('.$dtoken.') unauthorized: '.
2886: $env{'user.name'}.' - '.$env{'user.domain'});
2887: return '';
2888: }
2889:
2890: my %infohash=('resource.0.intoken' => $token,
2891: 'resource.0.checkintime' => $now,
2892: 'resource.0.inremote' => $ENV{'REMOTE_ADDR'});
2893:
2894: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
2895: return '';
2896: }
2897:
2898: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
2899: &escape('Checkin - '.$token)) ne 'ok') {
2900: return '';
2901: }
2902:
2903: return ($symb,$tuname,$tudom,$tcrsid);
2904: }
2905:
2906: # --------------------------------------------- Set Expire Date for Spreadsheet
2907:
2908: sub expirespread {
2909: my ($uname,$udom,$stype,$usymb)=@_;
2910: my $cid=$env{'request.course.id'};
2911: if ($cid) {
2912: my $now=time;
2913: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
2914: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
2915: $env{'course.'.$cid.'.num'}.
2916: ':nohist_expirationdates:'.
2917: &escape($key).'='.$now,
2918: $env{'course.'.$cid.'.home'})
2919: }
2920: return 'ok';
2921: }
2922:
2923: # ----------------------------------------------------- Devalidate Spreadsheets
2924:
2925: sub devalidate {
2926: my ($symb,$uname,$udom)=@_;
2927: my $cid=$env{'request.course.id'};
2928: if ($cid) {
2929: # delete the stored spreadsheets for
2930: # - the student level sheet of this user in course's homespace
2931: # - the assessment level sheet for this resource
2932: # for this user in user's homespace
2933: # - current conditional state info
2934: my $key=$uname.':'.$udom.':';
2935: my $status=
2936: &del('nohist_calculatedsheets',
2937: [$key.'studentcalc:'],
2938: $env{'course.'.$cid.'.domain'},
2939: $env{'course.'.$cid.'.num'})
2940: .' '.
2941: &del('nohist_calculatedsheets_'.$cid,
2942: [$key.'assesscalc:'.$symb],$udom,$uname);
2943: unless ($status eq 'ok ok') {
2944: &logthis('Could not devalidate spreadsheet '.
2945: $uname.' at '.$udom.' for '.
2946: $symb.': '.$status);
2947: }
2948: &delenv('user.state.'.$cid);
2949: }
2950: }
2951:
2952: sub get_scalar {
2953: my ($string,$end) = @_;
2954: my $value;
2955: if ($$string =~ s/^([^&]*?)($end)/$2/) {
2956: $value = $1;
2957: } elsif ($$string =~ s/^([^&]*?)&//) {
2958: $value = $1;
2959: }
2960: return &unescape($value);
2961: }
2962:
2963: sub array2str {
2964: my (@array) = @_;
2965: my $result=&arrayref2str(\@array);
2966: $result=~s/^__ARRAY_REF__//;
2967: $result=~s/__END_ARRAY_REF__$//;
2968: return $result;
2969: }
2970:
2971: sub arrayref2str {
2972: my ($arrayref) = @_;
2973: my $result='__ARRAY_REF__';
2974: foreach my $elem (@$arrayref) {
2975: if(ref($elem) eq 'ARRAY') {
2976: $result.=&arrayref2str($elem).'&';
2977: } elsif(ref($elem) eq 'HASH') {
2978: $result.=&hashref2str($elem).'&';
2979: } elsif(ref($elem)) {
2980: #print("Got a ref of ".(ref($elem))." skipping.");
2981: } else {
2982: $result.=&escape($elem).'&';
2983: }
2984: }
2985: $result=~s/\&$//;
2986: $result .= '__END_ARRAY_REF__';
2987: return $result;
2988: }
2989:
2990: sub hash2str {
2991: my (%hash) = @_;
2992: my $result=&hashref2str(\%hash);
2993: $result=~s/^__HASH_REF__//;
2994: $result=~s/__END_HASH_REF__$//;
2995: return $result;
2996: }
2997:
2998: sub hashref2str {
2999: my ($hashref)=@_;
3000: my $result='__HASH_REF__';
3001: foreach my $key (sort(keys(%$hashref))) {
3002: if (ref($key) eq 'ARRAY') {
3003: $result.=&arrayref2str($key).'=';
3004: } elsif (ref($key) eq 'HASH') {
3005: $result.=&hashref2str($key).'=';
3006: } elsif (ref($key)) {
3007: $result.='=';
3008: #print("Got a ref of ".(ref($key))." skipping.");
3009: } else {
3010: if ($key) {$result.=&escape($key).'=';} else { last; }
3011: }
3012:
3013: if(ref($hashref->{$key}) eq 'ARRAY') {
3014: $result.=&arrayref2str($hashref->{$key}).'&';
3015: } elsif(ref($hashref->{$key}) eq 'HASH') {
3016: $result.=&hashref2str($hashref->{$key}).'&';
3017: } elsif(ref($hashref->{$key})) {
3018: $result.='&';
3019: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
3020: } else {
3021: $result.=&escape($hashref->{$key}).'&';
3022: }
3023: }
3024: $result=~s/\&$//;
3025: $result .= '__END_HASH_REF__';
3026: return $result;
3027: }
3028:
3029: sub str2hash {
3030: my ($string)=@_;
3031: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
3032: return %$hash;
3033: }
3034:
3035: sub str2hashref {
3036: my ($string) = @_;
3037:
3038: my %hash;
3039:
3040: if($string !~ /^__HASH_REF__/) {
3041: if (! ($string eq '' || !defined($string))) {
3042: $hash{'error'}='Not hash reference';
3043: }
3044: return (\%hash, $string);
3045: }
3046:
3047: $string =~ s/^__HASH_REF__//;
3048:
3049: while($string !~ /^__END_HASH_REF__/) {
3050: #key
3051: my $key='';
3052: if($string =~ /^__HASH_REF__/) {
3053: ($key, $string)=&str2hashref($string);
3054: if(defined($key->{'error'})) {
3055: $hash{'error'}='Bad data';
3056: return (\%hash, $string);
3057: }
3058: } elsif($string =~ /^__ARRAY_REF__/) {
3059: ($key, $string)=&str2arrayref($string);
3060: if($key->[0] eq 'Array reference error') {
3061: $hash{'error'}='Bad data';
3062: return (\%hash, $string);
3063: }
3064: } else {
3065: $string =~ s/^(.*?)=//;
3066: $key=&unescape($1);
3067: }
3068: $string =~ s/^=//;
3069:
3070: #value
3071: my $value='';
3072: if($string =~ /^__HASH_REF__/) {
3073: ($value, $string)=&str2hashref($string);
3074: if(defined($value->{'error'})) {
3075: $hash{'error'}='Bad data';
3076: return (\%hash, $string);
3077: }
3078: } elsif($string =~ /^__ARRAY_REF__/) {
3079: ($value, $string)=&str2arrayref($string);
3080: if($value->[0] eq 'Array reference error') {
3081: $hash{'error'}='Bad data';
3082: return (\%hash, $string);
3083: }
3084: } else {
3085: $value=&get_scalar(\$string,'__END_HASH_REF__');
3086: }
3087: $string =~ s/^&//;
3088:
3089: $hash{$key}=$value;
3090: }
3091:
3092: $string =~ s/^__END_HASH_REF__//;
3093:
3094: return (\%hash, $string);
3095: }
3096:
3097: sub str2array {
3098: my ($string)=@_;
3099: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
3100: return @$array;
3101: }
3102:
3103: sub str2arrayref {
3104: my ($string) = @_;
3105: my @array;
3106:
3107: if($string !~ /^__ARRAY_REF__/) {
3108: if (! ($string eq '' || !defined($string))) {
3109: $array[0]='Array reference error';
3110: }
3111: return (\@array, $string);
3112: }
3113:
3114: $string =~ s/^__ARRAY_REF__//;
3115:
3116: while($string !~ /^__END_ARRAY_REF__/) {
3117: my $value='';
3118: if($string =~ /^__HASH_REF__/) {
3119: ($value, $string)=&str2hashref($string);
3120: if(defined($value->{'error'})) {
3121: $array[0] ='Array reference error';
3122: return (\@array, $string);
3123: }
3124: } elsif($string =~ /^__ARRAY_REF__/) {
3125: ($value, $string)=&str2arrayref($string);
3126: if($value->[0] eq 'Array reference error') {
3127: $array[0] ='Array reference error';
3128: return (\@array, $string);
3129: }
3130: } else {
3131: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
3132: }
3133: $string =~ s/^&//;
3134:
3135: push(@array, $value);
3136: }
3137:
3138: $string =~ s/^__END_ARRAY_REF__//;
3139:
3140: return (\@array, $string);
3141: }
3142:
3143: # -------------------------------------------------------------------Temp Store
3144:
3145: sub tmpreset {
3146: my ($symb,$namespace,$domain,$stuname) = @_;
3147: if (!$symb) {
3148: $symb=&symbread();
3149: if (!$symb) { $symb= $env{'request.url'}; }
3150: }
3151: $symb=escape($symb);
3152:
3153: if (!$namespace) { $namespace=$env{'request.state'}; }
3154: $namespace=~s/\//\_/g;
3155: $namespace=~s/\W//g;
3156:
3157: if (!$domain) { $domain=$env{'user.domain'}; }
3158: if (!$stuname) { $stuname=$env{'user.name'}; }
3159: if ($domain eq 'public' && $stuname eq 'public') {
3160: $stuname=$ENV{'REMOTE_ADDR'};
3161: }
3162: my $path=$perlvar{'lonDaemons'}.'/tmp';
3163: my %hash;
3164: if (tie(%hash,'GDBM_File',
3165: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3166: &GDBM_WRCREAT(),0640)) {
3167: foreach my $key (keys %hash) {
3168: if ($key=~ /:$symb/) {
3169: delete($hash{$key});
3170: }
3171: }
3172: }
3173: }
3174:
3175: sub tmpstore {
3176: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3177:
3178: if (!$symb) {
3179: $symb=&symbread();
3180: if (!$symb) { $symb= $env{'request.url'}; }
3181: }
3182: $symb=escape($symb);
3183:
3184: if (!$namespace) {
3185: # I don't think we would ever want to store this for a course.
3186: # it seems this will only be used if we don't have a course.
3187: #$namespace=$env{'request.course.id'};
3188: #if (!$namespace) {
3189: $namespace=$env{'request.state'};
3190: #}
3191: }
3192: $namespace=~s/\//\_/g;
3193: $namespace=~s/\W//g;
3194: if (!$domain) { $domain=$env{'user.domain'}; }
3195: if (!$stuname) { $stuname=$env{'user.name'}; }
3196: if ($domain eq 'public' && $stuname eq 'public') {
3197: $stuname=$ENV{'REMOTE_ADDR'};
3198: }
3199: my $now=time;
3200: my %hash;
3201: my $path=$perlvar{'lonDaemons'}.'/tmp';
3202: if (tie(%hash,'GDBM_File',
3203: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3204: &GDBM_WRCREAT(),0640)) {
3205: $hash{"version:$symb"}++;
3206: my $version=$hash{"version:$symb"};
3207: my $allkeys='';
3208: foreach my $key (keys(%$storehash)) {
3209: $allkeys.=$key.':';
3210: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
3211: }
3212: $hash{"$version:$symb:timestamp"}=$now;
3213: $allkeys.='timestamp';
3214: $hash{"$version:keys:$symb"}=$allkeys;
3215: if (untie(%hash)) {
3216: return 'ok';
3217: } else {
3218: return "error:$!";
3219: }
3220: } else {
3221: return "error:$!";
3222: }
3223: }
3224:
3225: # -----------------------------------------------------------------Temp Restore
3226:
3227: sub tmprestore {
3228: my ($symb,$namespace,$domain,$stuname) = @_;
3229:
3230: if (!$symb) {
3231: $symb=&symbread();
3232: if (!$symb) { $symb= $env{'request.url'}; }
3233: }
3234: $symb=escape($symb);
3235:
3236: if (!$namespace) { $namespace=$env{'request.state'}; }
3237:
3238: if (!$domain) { $domain=$env{'user.domain'}; }
3239: if (!$stuname) { $stuname=$env{'user.name'}; }
3240: if ($domain eq 'public' && $stuname eq 'public') {
3241: $stuname=$ENV{'REMOTE_ADDR'};
3242: }
3243: my %returnhash;
3244: $namespace=~s/\//\_/g;
3245: $namespace=~s/\W//g;
3246: my %hash;
3247: my $path=$perlvar{'lonDaemons'}.'/tmp';
3248: if (tie(%hash,'GDBM_File',
3249: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
3250: &GDBM_READER(),0640)) {
3251: my $version=$hash{"version:$symb"};
3252: $returnhash{'version'}=$version;
3253: my $scope;
3254: for ($scope=1;$scope<=$version;$scope++) {
3255: my $vkeys=$hash{"$scope:keys:$symb"};
3256: my @keys=split(/:/,$vkeys);
3257: my $key;
3258: $returnhash{"$scope:keys"}=$vkeys;
3259: foreach $key (@keys) {
3260: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3261: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
3262: }
3263: }
3264: if (!(untie(%hash))) {
3265: return "error:$!";
3266: }
3267: } else {
3268: return "error:$!";
3269: }
3270: return %returnhash;
3271: }
3272:
3273: # ----------------------------------------------------------------------- Store
3274:
3275: sub store {
3276: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3277: my $home='';
3278:
3279: if ($stuname) { $home=&homeserver($stuname,$domain); }
3280:
3281: $symb=&symbclean($symb);
3282: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3283:
3284: if (!$domain) { $domain=$env{'user.domain'}; }
3285: if (!$stuname) { $stuname=$env{'user.name'}; }
3286:
3287: &devalidate($symb,$stuname,$domain);
3288:
3289: $symb=escape($symb);
3290: if (!$namespace) {
3291: unless ($namespace=$env{'request.course.id'}) {
3292: return '';
3293: }
3294: }
3295: if (!$home) { $home=$env{'user.home'}; }
3296:
3297: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3298: $$storehash{'host'}=$perlvar{'lonHostID'};
3299:
3300: my $namevalue='';
3301: foreach my $key (keys(%$storehash)) {
3302: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3303: }
3304: $namevalue=~s/\&$//;
3305: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
3306: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3307: }
3308:
3309: # -------------------------------------------------------------- Critical Store
3310:
3311: sub cstore {
3312: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
3313: my $home='';
3314:
3315: if ($stuname) { $home=&homeserver($stuname,$domain); }
3316:
3317: $symb=&symbclean($symb);
3318: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
3319:
3320: if (!$domain) { $domain=$env{'user.domain'}; }
3321: if (!$stuname) { $stuname=$env{'user.name'}; }
3322:
3323: &devalidate($symb,$stuname,$domain);
3324:
3325: $symb=escape($symb);
3326: if (!$namespace) {
3327: unless ($namespace=$env{'request.course.id'}) {
3328: return '';
3329: }
3330: }
3331: if (!$home) { $home=$env{'user.home'}; }
3332:
3333: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
3334: $$storehash{'host'}=$perlvar{'lonHostID'};
3335:
3336: my $namevalue='';
3337: foreach my $key (keys(%$storehash)) {
3338: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3339: }
3340: $namevalue=~s/\&$//;
3341: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
3342: return critical
3343: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
3344: }
3345:
3346: # --------------------------------------------------------------------- Restore
3347:
3348: sub restore {
3349: my ($symb,$namespace,$domain,$stuname) = @_;
3350: my $home='';
3351:
3352: if ($stuname) { $home=&homeserver($stuname,$domain); }
3353:
3354: if (!$symb) {
3355: unless ($symb=escape(&symbread())) { return ''; }
3356: } else {
3357: $symb=&escape(&symbclean($symb));
3358: }
3359: if (!$namespace) {
3360: unless ($namespace=$env{'request.course.id'}) {
3361: return '';
3362: }
3363: }
3364: if (!$domain) { $domain=$env{'user.domain'}; }
3365: if (!$stuname) { $stuname=$env{'user.name'}; }
3366: if (!$home) { $home=$env{'user.home'}; }
3367: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
3368:
3369: my %returnhash=();
3370: foreach my $line (split(/\&/,$answer)) {
3371: my ($name,$value)=split(/\=/,$line);
3372: $returnhash{&unescape($name)}=&thaw_unescape($value);
3373: }
3374: my $version;
3375: for ($version=1;$version<=$returnhash{'version'};$version++) {
3376: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
3377: $returnhash{$item}=$returnhash{$version.':'.$item};
3378: }
3379: }
3380: return %returnhash;
3381: }
3382:
3383: # ---------------------------------------------------------- Course Description
3384:
3385: sub coursedescription {
3386: my ($courseid,$args)=@_;
3387: $courseid=~s/^\///;
3388: $courseid=~s/\_/\//g;
3389: my ($cdomain,$cnum)=split(/\//,$courseid);
3390: my $chome=&homeserver($cnum,$cdomain);
3391: my $normalid=$cdomain.'_'.$cnum;
3392: # need to always cache even if we get errors otherwise we keep
3393: # trying and trying and trying to get the course description.
3394: my %envhash=();
3395: my %returnhash=();
3396:
3397: my $expiretime=600;
3398: if ($env{'request.course.id'} eq $normalid) {
3399: $expiretime=120;
3400: }
3401:
3402: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
3403: if (!$args->{'freshen_cache'}
3404: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
3405: foreach my $key (keys(%env)) {
3406: next if ($key !~ /^\Q$prefix\E(.*)/);
3407: my ($setting) = $1;
3408: $returnhash{$setting} = $env{$key};
3409: }
3410: return %returnhash;
3411: }
3412:
3413: # get the data agin
3414: if (!$args->{'one_time'}) {
3415: $envhash{'course.'.$normalid.'.last_cache'}=time;
3416: }
3417:
3418: if ($chome ne 'no_host') {
3419: %returnhash=&dump('environment',$cdomain,$cnum);
3420: if (!exists($returnhash{'con_lost'})) {
3421: $returnhash{'home'}= $chome;
3422: $returnhash{'domain'} = $cdomain;
3423: $returnhash{'num'} = $cnum;
3424: if (!defined($returnhash{'type'})) {
3425: $returnhash{'type'} = 'Course';
3426: }
3427: while (my ($name,$value) = each %returnhash) {
3428: $envhash{'course.'.$normalid.'.'.$name}=$value;
3429: }
3430: $returnhash{'url'}=&clutter($returnhash{'url'});
3431: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
3432: $env{'user.name'}.'_'.$cdomain.'_'.$cnum;
3433: $envhash{'course.'.$normalid.'.home'}=$chome;
3434: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
3435: $envhash{'course.'.$normalid.'.num'}=$cnum;
3436: }
3437: }
3438: if (!$args->{'one_time'}) {
3439: &appenv(\%envhash);
3440: }
3441: return %returnhash;
3442: }
3443:
3444: # -------------------------------------------------See if a user is privileged
3445:
3446: sub privileged {
3447: my ($username,$domain)=@_;
3448: my $rolesdump=&reply("dump:$domain:$username:roles",
3449: &homeserver($username,$domain));
3450: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return 0; }
3451: my $now=time;
3452: if ($rolesdump ne '') {
3453: foreach my $entry (split(/&/,$rolesdump)) {
3454: if ($entry!~/^rolesdef_/) {
3455: my ($area,$role)=split(/=/,$entry);
3456: $area=~s/\_\w\w$//;
3457: my ($trole,$tend,$tstart)=split(/_/,$role);
3458: if (($trole eq 'dc') || ($trole eq 'su')) {
3459: my $active=1;
3460: if ($tend) {
3461: if ($tend<$now) { $active=0; }
3462: }
3463: if ($tstart) {
3464: if ($tstart>$now) { $active=0; }
3465: }
3466: if ($active) { return 1; }
3467: }
3468: }
3469: }
3470: }
3471: return 0;
3472: }
3473:
3474: # -------------------------------------------------------- Get user privileges
3475:
3476: sub rolesinit {
3477: my ($domain,$username,$authhost)=@_;
3478: my $rolesdump=reply("dump:$domain:$username:roles",$authhost);
3479: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return ''; }
3480: my %allroles=();
3481: my %allgroups=();
3482: my $now=time;
3483: my %userroles = ('user.login.time' => $now);
3484: my $group_privs;
3485:
3486: if ($rolesdump ne '') {
3487: foreach my $entry (split(/&/,$rolesdump)) {
3488: if ($entry!~/^rolesdef_/) {
3489: my ($area,$role)=split(/=/,$entry);
3490: $area=~s/\_\w\w$//;
3491: my ($trole,$tend,$tstart,$group_privs);
3492: if ($role=~/^cr/) {
3493: if ($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
3494: ($trole,my $trest)=($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|);
3495: ($tend,$tstart)=split('_',$trest);
3496: } else {
3497: $trole=$role;
3498: }
3499: } elsif ($role =~ m|^gr/|) {
3500: ($trole,$tend,$tstart) = split(/_/,$role);
3501: ($trole,$group_privs) = split(/\//,$trole);
3502: $group_privs = &unescape($group_privs);
3503: } else {
3504: ($trole,$tend,$tstart)=split(/_/,$role);
3505: }
3506: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
3507: $username);
3508: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
3509: if (($tend!=0) && ($tend<$now)) { $trole=''; }
3510: if (($tstart!=0) && ($tstart>$now)) { $trole=''; }
3511: if (($area ne '') && ($trole ne '')) {
3512: my $spec=$trole.'.'.$area;
3513: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
3514: if ($trole =~ /^cr\//) {
3515: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
3516: } elsif ($trole eq 'gr') {
3517: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
3518: } else {
3519: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
3520: }
3521: }
3522: }
3523: }
3524: my ($author,$adv) = &set_userprivs(\%userroles,\%allroles,\%allgroups);
3525: $userroles{'user.adv'} = $adv;
3526: $userroles{'user.author'} = $author;
3527: $env{'user.adv'}=$adv;
3528: }
3529: return \%userroles;
3530: }
3531:
3532: sub set_arearole {
3533: my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
3534: # log the associated role with the area
3535: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
3536: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
3537: }
3538:
3539: sub custom_roleprivs {
3540: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
3541: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
3542: my $homsvr=homeserver($rauthor,$rdomain);
3543: if (&hostname($homsvr) ne '') {
3544: my ($rdummy,$roledef)=
3545: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
3546: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
3547: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
3548: if (defined($syspriv)) {
3549: $$allroles{'cm./'}.=':'.$syspriv;
3550: $$allroles{$spec.'./'}.=':'.$syspriv;
3551: }
3552: if ($tdomain ne '') {
3553: if (defined($dompriv)) {
3554: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
3555: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
3556: }
3557: if (($trest ne '') && (defined($coursepriv))) {
3558: $$allroles{'cm.'.$area}.=':'.$coursepriv;
3559: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
3560: }
3561: }
3562: }
3563: }
3564: }
3565:
3566: sub group_roleprivs {
3567: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
3568: my $access = 1;
3569: my $now = time;
3570: if (($tend!=0) && ($tend<$now)) { $access = 0; }
3571: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
3572: if ($access) {
3573: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
3574: $$allgroups{$course}{$group} .=':'.$group_privs;
3575: }
3576: }
3577:
3578: sub standard_roleprivs {
3579: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
3580: if (defined($pr{$trole.':s'})) {
3581: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
3582: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
3583: }
3584: if ($tdomain ne '') {
3585: if (defined($pr{$trole.':d'})) {
3586: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
3587: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
3588: }
3589: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
3590: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
3591: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
3592: }
3593: }
3594: }
3595:
3596: sub set_userprivs {
3597: my ($userroles,$allroles,$allgroups) = @_;
3598: my $author=0;
3599: my $adv=0;
3600: my %grouproles = ();
3601: if (keys(%{$allgroups}) > 0) {
3602: foreach my $role (keys %{$allroles}) {
3603: my ($trole,$area,$sec,$extendedarea);
3604: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
3605: $trole = $1;
3606: $area = $2;
3607: $sec = $3;
3608: $extendedarea = $area.$sec;
3609: if (exists($$allgroups{$area})) {
3610: foreach my $group (keys(%{$$allgroups{$area}})) {
3611: my $spec = $trole.'.'.$extendedarea;
3612: $grouproles{$spec.'.'.$area.'/'.$group} =
3613: $$allgroups{$area}{$group};
3614: }
3615: }
3616: }
3617: }
3618: }
3619: foreach my $group (keys(%grouproles)) {
3620: $$allroles{$group} = $grouproles{$group};
3621: }
3622: foreach my $role (keys(%{$allroles})) {
3623: my %thesepriv;
3624: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
3625: foreach my $item (split(/:/,$$allroles{$role})) {
3626: if ($item ne '') {
3627: my ($privilege,$restrictions)=split(/&/,$item);
3628: if ($restrictions eq '') {
3629: $thesepriv{$privilege}='F';
3630: } elsif ($thesepriv{$privilege} ne 'F') {
3631: $thesepriv{$privilege}.=$restrictions;
3632: }
3633: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
3634: }
3635: }
3636: my $thesestr='';
3637: foreach my $priv (keys(%thesepriv)) {
3638: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
3639: }
3640: $userroles->{'user.priv.'.$role} = $thesestr;
3641: }
3642: return ($author,$adv);
3643: }
3644:
3645: # --------------------------------------------------------------- get interface
3646:
3647: sub get {
3648: my ($namespace,$storearr,$udomain,$uname)=@_;
3649: my $items='';
3650: foreach my $item (@$storearr) {
3651: $items.=&escape($item).'&';
3652: }
3653: $items=~s/\&$//;
3654: if (!$udomain) { $udomain=$env{'user.domain'}; }
3655: if (!$uname) { $uname=$env{'user.name'}; }
3656: my $uhome=&homeserver($uname,$udomain);
3657:
3658: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
3659: my @pairs=split(/\&/,$rep);
3660: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
3661: return @pairs;
3662: }
3663: my %returnhash=();
3664: my $i=0;
3665: foreach my $item (@$storearr) {
3666: $returnhash{$item}=&thaw_unescape($pairs[$i]);
3667: $i++;
3668: }
3669: return %returnhash;
3670: }
3671:
3672: # --------------------------------------------------------------- del interface
3673:
3674: sub del {
3675: my ($namespace,$storearr,$udomain,$uname)=@_;
3676: my $items='';
3677: foreach my $item (@$storearr) {
3678: $items.=&escape($item).'&';
3679: }
3680: $items=~s/\&$//;
3681: if (!$udomain) { $udomain=$env{'user.domain'}; }
3682: if (!$uname) { $uname=$env{'user.name'}; }
3683: my $uhome=&homeserver($uname,$udomain);
3684:
3685: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
3686: }
3687:
3688: # -------------------------------------------------------------- dump interface
3689:
3690: sub dump {
3691: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
3692: if (!$udomain) { $udomain=$env{'user.domain'}; }
3693: if (!$uname) { $uname=$env{'user.name'}; }
3694: my $uhome=&homeserver($uname,$udomain);
3695: if ($regexp) {
3696: $regexp=&escape($regexp);
3697: } else {
3698: $regexp='.';
3699: }
3700: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
3701: my @pairs=split(/\&/,$rep);
3702: my %returnhash=();
3703: foreach my $item (@pairs) {
3704: my ($key,$value)=split(/=/,$item,2);
3705: $key = &unescape($key);
3706: next if ($key =~ /^error: 2 /);
3707: $returnhash{$key}=&thaw_unescape($value);
3708: }
3709: return %returnhash;
3710: }
3711:
3712: # --------------------------------------------------------- dumpstore interface
3713:
3714: sub dumpstore {
3715: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
3716: if (!$udomain) { $udomain=$env{'user.domain'}; }
3717: if (!$uname) { $uname=$env{'user.name'}; }
3718: my $uhome=&homeserver($uname,$udomain);
3719: if ($regexp) {
3720: $regexp=&escape($regexp);
3721: } else {
3722: $regexp='.';
3723: }
3724: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
3725: my @pairs=split(/\&/,$rep);
3726: my %returnhash=();
3727: foreach my $item (@pairs) {
3728: my ($key,$value)=split(/=/,$item,2);
3729: next if ($key =~ /^error: 2 /);
3730: $returnhash{$key}=&thaw_unescape($value);
3731: }
3732: return %returnhash;
3733: }
3734:
3735: # -------------------------------------------------------------- keys interface
3736:
3737: sub getkeys {
3738: my ($namespace,$udomain,$uname)=@_;
3739: if (!$udomain) { $udomain=$env{'user.domain'}; }
3740: if (!$uname) { $uname=$env{'user.name'}; }
3741: my $uhome=&homeserver($uname,$udomain);
3742: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
3743: my @keyarray=();
3744: foreach my $key (split(/\&/,$rep)) {
3745: next if ($key =~ /^error: 2 /);
3746: push(@keyarray,&unescape($key));
3747: }
3748: return @keyarray;
3749: }
3750:
3751: # --------------------------------------------------------------- currentdump
3752: sub currentdump {
3753: my ($courseid,$sdom,$sname)=@_;
3754: $courseid = $env{'request.course.id'} if (! defined($courseid));
3755: $sdom = $env{'user.domain'} if (! defined($sdom));
3756: $sname = $env{'user.name'} if (! defined($sname));
3757: my $uhome = &homeserver($sname,$sdom);
3758: my $rep=reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
3759: return if ($rep =~ /^(error:|no_such_host)/);
3760: #
3761: my %returnhash=();
3762: #
3763: if ($rep eq "unknown_cmd") {
3764: # an old lond will not know currentdump
3765: # Do a dump and make it look like a currentdump
3766: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
3767: return if ($tmp[0] =~ /^(error:|no_such_host)/);
3768: my %hash = @tmp;
3769: @tmp=();
3770: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
3771: } else {
3772: my @pairs=split(/\&/,$rep);
3773: foreach my $pair (@pairs) {
3774: my ($key,$value)=split(/=/,$pair,2);
3775: my ($symb,$param) = split(/:/,$key);
3776: $returnhash{&unescape($symb)}->{&unescape($param)} =
3777: &thaw_unescape($value);
3778: }
3779: }
3780: return %returnhash;
3781: }
3782:
3783: sub convert_dump_to_currentdump{
3784: my %hash = %{shift()};
3785: my %returnhash;
3786: # Code ripped from lond, essentially. The only difference
3787: # here is the unescaping done by lonnet::dump(). Conceivably
3788: # we might run in to problems with parameter names =~ /^v\./
3789: while (my ($key,$value) = each(%hash)) {
3790: my ($v,$symb,$param) = split(/:/,$key);
3791: $symb = &unescape($symb);
3792: $param = &unescape($param);
3793: next if ($v eq 'version' || $symb eq 'keys');
3794: next if (exists($returnhash{$symb}) &&
3795: exists($returnhash{$symb}->{$param}) &&
3796: $returnhash{$symb}->{'v.'.$param} > $v);
3797: $returnhash{$symb}->{$param}=$value;
3798: $returnhash{$symb}->{'v.'.$param}=$v;
3799: }
3800: #
3801: # Remove all of the keys in the hashes which keep track of
3802: # the version of the parameter.
3803: while (my ($symb,$param_hash) = each(%returnhash)) {
3804: # use a foreach because we are going to delete from the hash.
3805: foreach my $key (keys(%$param_hash)) {
3806: delete($param_hash->{$key}) if ($key =~ /^v\./);
3807: }
3808: }
3809: return \%returnhash;
3810: }
3811:
3812: # ------------------------------------------------------ critical inc interface
3813:
3814: sub cinc {
3815: return &inc(@_,'critical');
3816: }
3817:
3818: # --------------------------------------------------------------- inc interface
3819:
3820: sub inc {
3821: my ($namespace,$store,$udomain,$uname,$critical) = @_;
3822: if (!$udomain) { $udomain=$env{'user.domain'}; }
3823: if (!$uname) { $uname=$env{'user.name'}; }
3824: my $uhome=&homeserver($uname,$udomain);
3825: my $items='';
3826: if (! ref($store)) {
3827: # got a single value, so use that instead
3828: $items = &escape($store).'=&';
3829: } elsif (ref($store) eq 'SCALAR') {
3830: $items = &escape($$store).'=&';
3831: } elsif (ref($store) eq 'ARRAY') {
3832: $items = join('=&',map {&escape($_);} @{$store});
3833: } elsif (ref($store) eq 'HASH') {
3834: while (my($key,$value) = each(%{$store})) {
3835: $items.= &escape($key).'='.&escape($value).'&';
3836: }
3837: }
3838: $items=~s/\&$//;
3839: if ($critical) {
3840: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
3841: } else {
3842: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
3843: }
3844: }
3845:
3846: # --------------------------------------------------------------- put interface
3847:
3848: sub put {
3849: my ($namespace,$storehash,$udomain,$uname)=@_;
3850: if (!$udomain) { $udomain=$env{'user.domain'}; }
3851: if (!$uname) { $uname=$env{'user.name'}; }
3852: my $uhome=&homeserver($uname,$udomain);
3853: my $items='';
3854: foreach my $item (keys(%$storehash)) {
3855: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
3856: }
3857: $items=~s/\&$//;
3858: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
3859: }
3860:
3861: # ------------------------------------------------------------ newput interface
3862:
3863: sub newput {
3864: my ($namespace,$storehash,$udomain,$uname)=@_;
3865: if (!$udomain) { $udomain=$env{'user.domain'}; }
3866: if (!$uname) { $uname=$env{'user.name'}; }
3867: my $uhome=&homeserver($uname,$udomain);
3868: my $items='';
3869: foreach my $key (keys(%$storehash)) {
3870: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
3871: }
3872: $items=~s/\&$//;
3873: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
3874: }
3875:
3876: # --------------------------------------------------------- putstore interface
3877:
3878: sub putstore {
3879: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
3880: if (!$udomain) { $udomain=$env{'user.domain'}; }
3881: if (!$uname) { $uname=$env{'user.name'}; }
3882: my $uhome=&homeserver($uname,$udomain);
3883: my $items='';
3884: foreach my $key (keys(%$storehash)) {
3885: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
3886: }
3887: $items=~s/\&$//;
3888: my $esc_symb=&escape($symb);
3889: my $esc_v=&escape($version);
3890: my $reply =
3891: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
3892: $uhome);
3893: if ($reply eq 'unknown_cmd') {
3894: # gfall back to way things use to be done
3895: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
3896: $uname);
3897: }
3898: return $reply;
3899: }
3900:
3901: sub old_putstore {
3902: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
3903: if (!$udomain) { $udomain=$env{'user.domain'}; }
3904: if (!$uname) { $uname=$env{'user.name'}; }
3905: my $uhome=&homeserver($uname,$udomain);
3906: my %newstorehash;
3907: foreach my $item (keys(%$storehash)) {
3908: my $key = $version.':'.&escape($symb).':'.$item;
3909: $newstorehash{$key} = $storehash->{$item};
3910: }
3911: my $items='';
3912: my %allitems = ();
3913: foreach my $item (keys(%newstorehash)) {
3914: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
3915: my $key = $1.':keys:'.$2;
3916: $allitems{$key} .= $3.':';
3917: }
3918: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
3919: }
3920: foreach my $item (keys(%allitems)) {
3921: $allitems{$item} =~ s/\:$//;
3922: $items.= $item.'='.$allitems{$item}.'&';
3923: }
3924: $items=~s/\&$//;
3925: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
3926: }
3927:
3928: # ------------------------------------------------------ critical put interface
3929:
3930: sub cput {
3931: my ($namespace,$storehash,$udomain,$uname)=@_;
3932: if (!$udomain) { $udomain=$env{'user.domain'}; }
3933: if (!$uname) { $uname=$env{'user.name'}; }
3934: my $uhome=&homeserver($uname,$udomain);
3935: my $items='';
3936: foreach my $item (keys(%$storehash)) {
3937: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
3938: }
3939: $items=~s/\&$//;
3940: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
3941: }
3942:
3943: # -------------------------------------------------------------- eget interface
3944:
3945: sub eget {
3946: my ($namespace,$storearr,$udomain,$uname)=@_;
3947: my $items='';
3948: foreach my $item (@$storearr) {
3949: $items.=&escape($item).'&';
3950: }
3951: $items=~s/\&$//;
3952: if (!$udomain) { $udomain=$env{'user.domain'}; }
3953: if (!$uname) { $uname=$env{'user.name'}; }
3954: my $uhome=&homeserver($uname,$udomain);
3955: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
3956: my @pairs=split(/\&/,$rep);
3957: my %returnhash=();
3958: my $i=0;
3959: foreach my $item (@$storearr) {
3960: $returnhash{$item}=&thaw_unescape($pairs[$i]);
3961: $i++;
3962: }
3963: return %returnhash;
3964: }
3965:
3966: # ------------------------------------------------------------ tmpput interface
3967: sub tmpput {
3968: my ($storehash,$server,$context)=@_;
3969: my $items='';
3970: foreach my $item (keys(%$storehash)) {
3971: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
3972: }
3973: $items=~s/\&$//;
3974: if (defined($context)) {
3975: $items .= ':'.&escape($context);
3976: }
3977: return &reply("tmpput:$items",$server);
3978: }
3979:
3980: # ------------------------------------------------------------ tmpget interface
3981: sub tmpget {
3982: my ($token,$server)=@_;
3983: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
3984: my $rep=&reply("tmpget:$token",$server);
3985: my %returnhash;
3986: foreach my $item (split(/\&/,$rep)) {
3987: my ($key,$value)=split(/=/,$item);
3988: next if ($key =~ /^error: 2 /);
3989: $returnhash{&unescape($key)}=&thaw_unescape($value);
3990: }
3991: return %returnhash;
3992: }
3993:
3994: # ------------------------------------------------------------ tmpget interface
3995: sub tmpdel {
3996: my ($token,$server)=@_;
3997: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
3998: return &reply("tmpdel:$token",$server);
3999: }
4000:
4001: # -------------------------------------------------- portfolio access checking
4002:
4003: sub portfolio_access {
4004: my ($requrl) = @_;
4005: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
4006: my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
4007: if ($result) {
4008: my %setters;
4009: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4010: my ($startblock,$endblock) =
4011: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
4012: if ($startblock && $endblock) {
4013: return 'B';
4014: }
4015: } else {
4016: my ($startblock,$endblock) =
4017: &Apache::loncommon::blockcheck(\%setters,'port');
4018: if ($startblock && $endblock) {
4019: return 'B';
4020: }
4021: }
4022: }
4023: if ($result eq 'ok') {
4024: return 'F';
4025: } elsif ($result =~ /^[^:]+:guest_/) {
4026: return 'A';
4027: }
4028: return '';
4029: }
4030:
4031: sub get_portfolio_access {
4032: my ($udom,$unum,$file_name,$group,$access_hash) = @_;
4033:
4034: if (!ref($access_hash)) {
4035: my $current_perms = &get_portfile_permissions($udom,$unum);
4036: my %access_controls = &get_access_controls($current_perms,$group,
4037: $file_name);
4038: $access_hash = $access_controls{$file_name};
4039: }
4040:
4041: my ($public,$guest,@domains,@users,@courses,@groups);
4042: my $now = time;
4043: if (ref($access_hash) eq 'HASH') {
4044: foreach my $key (keys(%{$access_hash})) {
4045: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
4046: if ($start > $now) {
4047: next;
4048: }
4049: if ($end && $end<$now) {
4050: next;
4051: }
4052: if ($scope eq 'public') {
4053: $public = $key;
4054: last;
4055: } elsif ($scope eq 'guest') {
4056: $guest = $key;
4057: } elsif ($scope eq 'domains') {
4058: push(@domains,$key);
4059: } elsif ($scope eq 'users') {
4060: push(@users,$key);
4061: } elsif ($scope eq 'course') {
4062: push(@courses,$key);
4063: } elsif ($scope eq 'group') {
4064: push(@groups,$key);
4065: }
4066: }
4067: if ($public) {
4068: return 'ok';
4069: }
4070: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
4071: if ($guest) {
4072: return $guest;
4073: }
4074: } else {
4075: if (@domains > 0) {
4076: foreach my $domkey (@domains) {
4077: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
4078: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
4079: return 'ok';
4080: }
4081: }
4082: }
4083: }
4084: if (@users > 0) {
4085: foreach my $userkey (@users) {
4086: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
4087: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
4088: if (ref($item) eq 'HASH') {
4089: if (($item->{'uname'} eq $env{'user.name'}) &&
4090: ($item->{'udom'} eq $env{'user.domain'})) {
4091: return 'ok';
4092: }
4093: }
4094: }
4095: }
4096: }
4097: }
4098: my %roleshash;
4099: my @courses_and_groups = @courses;
4100: push(@courses_and_groups,@groups);
4101: if (@courses_and_groups > 0) {
4102: my (%allgroups,%allroles);
4103: my ($start,$end,$role,$sec,$group);
4104: foreach my $envkey (%env) {
4105: if ($envkey =~ m-^user\.role\.(gr|cc|in|ta|ep|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
4106: my $cid = $2.'_'.$3;
4107: if ($1 eq 'gr') {
4108: $group = $4;
4109: $allgroups{$cid}{$group} = $env{$envkey};
4110: } else {
4111: if ($4 eq '') {
4112: $sec = 'none';
4113: } else {
4114: $sec = $4;
4115: }
4116: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4117: }
4118: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
4119: my $cid = $2.'_'.$3;
4120: if ($4 eq '') {
4121: $sec = 'none';
4122: } else {
4123: $sec = $4;
4124: }
4125: $allroles{$cid}{$1}{$sec} = $env{$envkey};
4126: }
4127: }
4128: if (keys(%allroles) == 0) {
4129: return;
4130: }
4131: foreach my $key (@courses_and_groups) {
4132: my %content = %{$$access_hash{$key}};
4133: my $cnum = $content{'number'};
4134: my $cdom = $content{'domain'};
4135: my $cid = $cdom.'_'.$cnum;
4136: if (!exists($allroles{$cid})) {
4137: next;
4138: }
4139: foreach my $role_id (keys(%{$content{'roles'}})) {
4140: my @sections = @{$content{'roles'}{$role_id}{'section'}};
4141: my @groups = @{$content{'roles'}{$role_id}{'group'}};
4142: my @status = @{$content{'roles'}{$role_id}{'access'}};
4143: my @roles = @{$content{'roles'}{$role_id}{'role'}};
4144: foreach my $role (keys(%{$allroles{$cid}})) {
4145: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
4146: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
4147: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
4148: if (grep/^all$/,@sections) {
4149: return 'ok';
4150: } else {
4151: if (grep/^$sec$/,@sections) {
4152: return 'ok';
4153: }
4154: }
4155: }
4156: }
4157: if (keys(%{$allgroups{$cid}}) == 0) {
4158: if (grep/^none$/,@groups) {
4159: return 'ok';
4160: }
4161: } else {
4162: if (grep/^all$/,@groups) {
4163: return 'ok';
4164: }
4165: foreach my $group (keys(%{$allgroups{$cid}})) {
4166: if (grep/^$group$/,@groups) {
4167: return 'ok';
4168: }
4169: }
4170: }
4171: }
4172: }
4173: }
4174: }
4175: }
4176: if ($guest) {
4177: return $guest;
4178: }
4179: }
4180: }
4181: return;
4182: }
4183:
4184: sub course_group_datechecker {
4185: my ($dates,$now,$status) = @_;
4186: my ($start,$end) = split(/\./,$dates);
4187: if (!$start && !$end) {
4188: return 'ok';
4189: }
4190: if (grep/^active$/,@{$status}) {
4191: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
4192: return 'ok';
4193: }
4194: }
4195: if (grep/^previous$/,@{$status}) {
4196: if ($end > $now ) {
4197: return 'ok';
4198: }
4199: }
4200: if (grep/^future$/,@{$status}) {
4201: if ($start > $now) {
4202: return 'ok';
4203: }
4204: }
4205: return;
4206: }
4207:
4208: sub parse_portfolio_url {
4209: my ($url) = @_;
4210:
4211: my ($type,$udom,$unum,$group,$file_name);
4212:
4213: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
4214: $type = 1;
4215: $udom = $1;
4216: $unum = $2;
4217: $file_name = $3;
4218: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
4219: $type = 2;
4220: $udom = $1;
4221: $unum = $2;
4222: $group = $3;
4223: $file_name = $3.'/'.$4;
4224: }
4225: if (wantarray) {
4226: return ($type,$udom,$unum,$file_name,$group);
4227: }
4228: return $type;
4229: }
4230:
4231: sub is_portfolio_url {
4232: my ($url) = @_;
4233: return scalar(&parse_portfolio_url($url));
4234: }
4235:
4236: sub is_portfolio_file {
4237: my ($file) = @_;
4238: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
4239: return 1;
4240: }
4241: return;
4242: }
4243:
4244:
4245: # ---------------------------------------------- Custom access rule evaluation
4246:
4247: sub customaccess {
4248: my ($priv,$uri)=@_;
4249: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
4250: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
4251: $udom = &LONCAPA::clean_domain($udom);
4252: $ucrs = &LONCAPA::clean_username($ucrs);
4253: my $access=0;
4254: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
4255: my ($effect,$realm,$role,$type)=split(/\:/,$right);
4256: if ($type eq 'user') {
4257: foreach my $scope (split(/\s*\,\s*/,$realm)) {
4258: my ($tdom,$tuname)=split(m{/},$scope);
4259: if ($tdom) {
4260: if ($tdom ne $env{'user.domain'}) { next; }
4261: }
4262: if ($tuname) {
4263: if ($tuname ne $env{'user.name'}) { next; }
4264: }
4265: $access=($effect eq 'allow');
4266: last;
4267: }
4268: } else {
4269: if ($role) {
4270: if ($role ne $urole) { next; }
4271: }
4272: foreach my $scope (split(/\s*\,\s*/,$realm)) {
4273: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
4274: if ($tdom) {
4275: if ($tdom ne $udom) { next; }
4276: }
4277: if ($tcrs) {
4278: if ($tcrs ne $ucrs) { next; }
4279: }
4280: if ($tsec) {
4281: if ($tsec ne $usec) { next; }
4282: }
4283: $access=($effect eq 'allow');
4284: last;
4285: }
4286: if ($realm eq '' && $role eq '') {
4287: $access=($effect eq 'allow');
4288: }
4289: }
4290: }
4291: return $access;
4292: }
4293:
4294: # ------------------------------------------------- Check for a user privilege
4295:
4296: sub allowed {
4297: my ($priv,$uri,$symb,$role)=@_;
4298: my $ver_orguri=$uri;
4299: $uri=&deversion($uri);
4300: my $orguri=$uri;
4301: $uri=&declutter($uri);
4302:
4303: if ($priv eq 'evb') {
4304: # Evade communication block restrictions for specified role in a course
4305: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
4306: return $1;
4307: } else {
4308: return;
4309: }
4310: }
4311:
4312: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
4313: # Free bre access to adm and meta resources
4314: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
4315: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
4316: && ($priv eq 'bre')) {
4317: return 'F';
4318: }
4319:
4320: # Free bre access to user's own portfolio contents
4321: my ($space,$domain,$name,@dir)=split('/',$uri);
4322: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
4323: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
4324: my %setters;
4325: my ($startblock,$endblock) =
4326: &Apache::loncommon::blockcheck(\%setters,'port');
4327: if ($startblock && $endblock) {
4328: return 'B';
4329: } else {
4330: return 'F';
4331: }
4332: }
4333:
4334: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
4335: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
4336: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
4337: if (exists($env{'request.course.id'})) {
4338: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
4339: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
4340: if (($domain eq $cdom) && ($name eq $cnum)) {
4341: my $courseprivid=$env{'request.course.id'};
4342: $courseprivid=~s/\_/\//;
4343: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
4344: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
4345: return $1;
4346: } else {
4347: if ($env{'request.course.sec'}) {
4348: $courseprivid.='/'.$env{'request.course.sec'};
4349: }
4350: if ($env{'user.priv.'.$env{'request.role'}.'./'.
4351: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
4352: return $2;
4353: }
4354: }
4355: }
4356: }
4357: }
4358:
4359: # Free bre to public access
4360:
4361: if ($priv eq 'bre') {
4362: my $copyright=&metadata($uri,'copyright');
4363: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
4364: return 'F';
4365: }
4366: if ($copyright eq 'priv') {
4367: $uri=~/([^\/]+)\/([^\/]+)\//;
4368: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
4369: return '';
4370: }
4371: }
4372: if ($copyright eq 'domain') {
4373: $uri=~/([^\/]+)\/([^\/]+)\//;
4374: unless (($env{'user.domain'} eq $1) ||
4375: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
4376: return '';
4377: }
4378: }
4379: if ($env{'request.role'}=~ /li\.\//) {
4380: # Library role, so allow browsing of resources in this domain.
4381: return 'F';
4382: }
4383: if ($copyright eq 'custom') {
4384: unless (&customaccess($priv,$uri)) { return ''; }
4385: }
4386: }
4387: # Domain coordinator is trying to create a course
4388: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
4389: # uri is the requested domain in this case.
4390: # comparison to 'request.role.domain' shows if the user has selected
4391: # a role of dc for the domain in question.
4392: return 'F' if ($uri eq $env{'request.role.domain'});
4393: }
4394:
4395: my $thisallowed='';
4396: my $statecond=0;
4397: my $courseprivid='';
4398:
4399: # Course
4400:
4401: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
4402: $thisallowed.=$1;
4403: }
4404:
4405: # Domain
4406:
4407: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
4408: =~/\Q$priv\E\&([^\:]*)/) {
4409: $thisallowed.=$1;
4410: }
4411:
4412: # Course: uri itself is a course
4413: my $courseuri=$uri;
4414: $courseuri=~s/\_(\d)/\/$1/;
4415: $courseuri=~s/^([^\/])/\/$1/;
4416:
4417: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
4418: =~/\Q$priv\E\&([^\:]*)/) {
4419: $thisallowed.=$1;
4420: }
4421:
4422: # URI is an uploaded document for this course, default permissions don't matter
4423: # not allowing 'edit' access (editupload) to uploaded course docs
4424: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
4425: $thisallowed='';
4426: my ($match)=&is_on_map($uri);
4427: if ($match) {
4428: if ($env{'user.priv.'.$env{'request.role'}.'./'}
4429: =~/\Q$priv\E\&([^\:]*)/) {
4430: $thisallowed.=$1;
4431: }
4432: } else {
4433: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
4434: if ($refuri) {
4435: if ($refuri =~ m|^/adm/|) {
4436: $thisallowed='F';
4437: } else {
4438: $refuri=&declutter($refuri);
4439: my ($match) = &is_on_map($refuri);
4440: if ($match) {
4441: $thisallowed='F';
4442: }
4443: }
4444: }
4445: }
4446: }
4447:
4448: if ($priv eq 'bre'
4449: && $thisallowed ne 'F'
4450: && $thisallowed ne '2'
4451: && &is_portfolio_url($uri)) {
4452: $thisallowed = &portfolio_access($uri);
4453: }
4454:
4455: # Full access at system, domain or course-wide level? Exit.
4456:
4457: if ($thisallowed=~/F/) {
4458: return 'F';
4459: }
4460:
4461: # If this is generating or modifying users, exit with special codes
4462:
4463: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
4464: if (($priv eq 'cca') || ($priv eq 'caa')) {
4465: my ($audom,$auname)=split('/',$uri);
4466: # no author name given, so this just checks on the general right to make a co-author in this domain
4467: unless ($auname) { return $thisallowed; }
4468: # an author name is given, so we are about to actually make a co-author for a certain account
4469: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
4470: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
4471: ($audom ne $env{'request.role.domain'}))) { return ''; }
4472: }
4473: return $thisallowed;
4474: }
4475: #
4476: # Gathered so far: system, domain and course wide privileges
4477: #
4478: # Course: See if uri or referer is an individual resource that is part of
4479: # the course
4480:
4481: if ($env{'request.course.id'}) {
4482:
4483: $courseprivid=$env{'request.course.id'};
4484: if ($env{'request.course.sec'}) {
4485: $courseprivid.='/'.$env{'request.course.sec'};
4486: }
4487: $courseprivid=~s/\_/\//;
4488: my $checkreferer=1;
4489: my ($match,$cond)=&is_on_map($uri);
4490: if ($match) {
4491: $statecond=$cond;
4492: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
4493: =~/\Q$priv\E\&([^\:]*)/) {
4494: $thisallowed.=$1;
4495: $checkreferer=0;
4496: }
4497: }
4498:
4499: if ($checkreferer) {
4500: my $refuri=$env{'httpref.'.$orguri};
4501: unless ($refuri) {
4502: foreach my $key (keys(%env)) {
4503: if ($key=~/^httpref\..*\*/) {
4504: my $pattern=$key;
4505: $pattern=~s/^httpref\.\/res\///;
4506: $pattern=~s/\*/\[\^\/\]\+/g;
4507: $pattern=~s/\//\\\//g;
4508: if ($orguri=~/$pattern/) {
4509: $refuri=$env{$key};
4510: }
4511: }
4512: }
4513: }
4514:
4515: if ($refuri) {
4516: $refuri=&declutter($refuri);
4517: my ($match,$cond)=&is_on_map($refuri);
4518: if ($match) {
4519: my $refstatecond=$cond;
4520: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
4521: =~/\Q$priv\E\&([^\:]*)/) {
4522: $thisallowed.=$1;
4523: $uri=$refuri;
4524: $statecond=$refstatecond;
4525: }
4526: }
4527: }
4528: }
4529: }
4530:
4531: #
4532: # Gathered now: all privileges that could apply, and condition number
4533: #
4534: #
4535: # Full or no access?
4536: #
4537:
4538: if ($thisallowed=~/F/) {
4539: return 'F';
4540: }
4541:
4542: unless ($thisallowed) {
4543: return '';
4544: }
4545:
4546: # Restrictions exist, deal with them
4547: #
4548: # C:according to course preferences
4549: # R:according to resource settings
4550: # L:unless locked
4551: # X:according to user session state
4552: #
4553:
4554: # Possibly locked functionality, check all courses
4555: # Locks might take effect only after 10 minutes cache expiration for other
4556: # courses, and 2 minutes for current course
4557:
4558: my $envkey;
4559: if ($thisallowed=~/L/) {
4560: foreach $envkey (keys %env) {
4561: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
4562: my $courseid=$2;
4563: my $roleid=$1.'.'.$2;
4564: $courseid=~s/^\///;
4565: my $expiretime=600;
4566: if ($env{'request.role'} eq $roleid) {
4567: $expiretime=120;
4568: }
4569: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
4570: my $prefix='course.'.$cdom.'_'.$cnum.'.';
4571: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
4572: &coursedescription($courseid,{'freshen_cache' => 1});
4573: }
4574: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
4575: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
4576: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
4577: &log($env{'user.domain'},$env{'user.name'},
4578: $env{'user.home'},
4579: 'Locked by res: '.$priv.' for '.$uri.' due to '.
4580: $cdom.'/'.$cnum.'/'.$csec.' expire '.
4581: $env{$prefix.'priv.'.$priv.'.lock.expire'});
4582: return '';
4583: }
4584: }
4585: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
4586: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
4587: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
4588: &log($env{'user.domain'},$env{'user.name'},
4589: $env{'user.home'},
4590: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
4591: $cdom.'/'.$cnum.'/'.$csec.' expire '.
4592: $env{$prefix.'priv.'.$priv.'.lock.expire'});
4593: return '';
4594: }
4595: }
4596: }
4597: }
4598: }
4599:
4600: #
4601: # Rest of the restrictions depend on selected course
4602: #
4603:
4604: unless ($env{'request.course.id'}) {
4605: if ($thisallowed eq 'A') {
4606: return 'A';
4607: } elsif ($thisallowed eq 'B') {
4608: return 'B';
4609: } else {
4610: return '1';
4611: }
4612: }
4613:
4614: #
4615: # Now user is definitely in a course
4616: #
4617:
4618:
4619: # Course preferences
4620:
4621: if ($thisallowed=~/C/) {
4622: my $rolecode=(split(/\./,$env{'request.role'}))[0];
4623: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
4624: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
4625: =~/\Q$rolecode\E/) {
4626: if ($priv ne 'pch') {
4627: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
4628: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
4629: $env{'request.course.id'});
4630: }
4631: return '';
4632: }
4633:
4634: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
4635: =~/\Q$unamedom\E/) {
4636: if ($priv ne 'pch') {
4637: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
4638: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
4639: $env{'request.course.id'});
4640: }
4641: return '';
4642: }
4643: }
4644:
4645: # Resource preferences
4646:
4647: if ($thisallowed=~/R/) {
4648: my $rolecode=(split(/\./,$env{'request.role'}))[0];
4649: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
4650: if ($priv ne 'pch') {
4651: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
4652: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
4653: }
4654: return '';
4655: }
4656: }
4657:
4658: # Restricted by state or randomout?
4659:
4660: if ($thisallowed=~/X/) {
4661: if ($env{'acc.randomout'}) {
4662: if (!$symb) { $symb=&symbread($uri,1); }
4663: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
4664: return '';
4665: }
4666: }
4667: if (&condval($statecond)) {
4668: return '2';
4669: } else {
4670: return '';
4671: }
4672: }
4673:
4674: if ($thisallowed eq 'A') {
4675: return 'A';
4676: } elsif ($thisallowed eq 'B') {
4677: return 'B';
4678: }
4679: return 'F';
4680: }
4681:
4682: sub split_uri_for_cond {
4683: my $uri=&deversion(&declutter(shift));
4684: my @uriparts=split(/\//,$uri);
4685: my $filename=pop(@uriparts);
4686: my $pathname=join('/',@uriparts);
4687: return ($pathname,$filename);
4688: }
4689: # --------------------------------------------------- Is a resource on the map?
4690:
4691: sub is_on_map {
4692: my ($pathname,$filename) = &split_uri_for_cond(shift);
4693: #Trying to find the conditional for the file
4694: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
4695: /\&\Q$filename\E\:([\d\|]+)\&/);
4696: if ($match) {
4697: return (1,$1);
4698: } else {
4699: return (0,0);
4700: }
4701: }
4702:
4703: # --------------------------------------------------------- Get symb from alias
4704:
4705: sub get_symb_from_alias {
4706: my $symb=shift;
4707: my ($map,$resid,$url)=&decode_symb($symb);
4708: # Already is a symb
4709: if ($url) { return $symb; }
4710: # Must be an alias
4711: my $aliassymb='';
4712: my %bighash;
4713: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
4714: &GDBM_READER(),0640)) {
4715: my $rid=$bighash{'mapalias_'.$symb};
4716: if ($rid) {
4717: my ($mapid,$resid)=split(/\./,$rid);
4718: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
4719: $resid,$bighash{'src_'.$rid});
4720: }
4721: untie %bighash;
4722: }
4723: return $aliassymb;
4724: }
4725:
4726: # ----------------------------------------------------------------- Define Role
4727:
4728: sub definerole {
4729: if (allowed('mcr','/')) {
4730: my ($rolename,$sysrole,$domrole,$courole)=@_;
4731: foreach my $role (split(':',$sysrole)) {
4732: my ($crole,$cqual)=split(/\&/,$role);
4733: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
4734: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
4735: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
4736: return "refused:s:$crole&$cqual";
4737: }
4738: }
4739: }
4740: foreach my $role (split(':',$domrole)) {
4741: my ($crole,$cqual)=split(/\&/,$role);
4742: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
4743: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
4744: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
4745: return "refused:d:$crole&$cqual";
4746: }
4747: }
4748: }
4749: foreach my $role (split(':',$courole)) {
4750: my ($crole,$cqual)=split(/\&/,$role);
4751: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
4752: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
4753: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
4754: return "refused:c:$crole&$cqual";
4755: }
4756: }
4757: }
4758: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
4759: "$env{'user.domain'}:$env{'user.name'}:".
4760: "rolesdef_$rolename=".
4761: escape($sysrole.'_'.$domrole.'_'.$courole);
4762: return reply($command,$env{'user.home'});
4763: } else {
4764: return 'refused';
4765: }
4766: }
4767:
4768: # ---------------- Make a metadata query against the network of library servers
4769:
4770: sub metadata_query {
4771: my ($query,$custom,$customshow,$server_array)=@_;
4772: my %rhash;
4773: my %libserv = &all_library();
4774: my @server_list = (defined($server_array) ? @$server_array
4775: : keys(%libserv) );
4776: for my $server (@server_list) {
4777: unless ($custom or $customshow) {
4778: my $reply=&reply("querysend:".&escape($query),$server);
4779: $rhash{$server}=$reply;
4780: }
4781: else {
4782: my $reply=&reply("querysend:".&escape($query).':'.
4783: &escape($custom).':'.&escape($customshow),
4784: $server);
4785: $rhash{$server}=$reply;
4786: }
4787: }
4788: return \%rhash;
4789: }
4790:
4791: # ----------------------------------------- Send log queries and wait for reply
4792:
4793: sub log_query {
4794: my ($uname,$udom,$query,%filters)=@_;
4795: my $uhome=&homeserver($uname,$udom);
4796: if ($uhome eq 'no_host') { return 'error: no_host'; }
4797: my $uhost=&hostname($uhome);
4798: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
4799: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
4800: $uhome);
4801: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
4802: return get_query_reply($queryid);
4803: }
4804:
4805: # -------------------------- Update MySQL table for portfolio file
4806:
4807: sub update_portfolio_table {
4808: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
4809: my $homeserver = &homeserver($uname,$udom);
4810: my $queryid=
4811: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
4812: ':'.&escape($file_name).':'.$action,$homeserver);
4813: my $reply = &get_query_reply($queryid);
4814: return $reply;
4815: }
4816:
4817: # -------------------------- Update MySQL allusers table
4818:
4819: sub update_allusers_table {
4820: my ($uname,$udom,$names) = @_;
4821: my $homeserver = &homeserver($uname,$udom);
4822: my $queryid=
4823: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
4824: 'lastname='.&escape($names->{'lastname'}).'%%'.
4825: 'firstname='.&escape($names->{'firstname'}).'%%'.
4826: 'middlename='.&escape($names->{'middlename'}).'%%'.
4827: 'generation='.&escape($names->{'generation'}).'%%'.
4828: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
4829: 'id='.&escape($names->{'id'}),$homeserver);
4830: my $reply = &get_query_reply($queryid);
4831: return $reply;
4832: }
4833:
4834: # ------- Request retrieval of institutional classlists for course(s)
4835:
4836: sub fetch_enrollment_query {
4837: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
4838: my $homeserver;
4839: my $maxtries = 1;
4840: if ($context eq 'automated') {
4841: $homeserver = $perlvar{'lonHostID'};
4842: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
4843: } else {
4844: $homeserver = &homeserver($cnum,$dom);
4845: }
4846: my $host=&hostname($homeserver);
4847: my $cmd = '';
4848: foreach my $affiliate (keys %{$affiliatesref}) {
4849: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
4850: }
4851: $cmd =~ s/%%$//;
4852: $cmd = &escape($cmd);
4853: my $query = 'fetchenrollment';
4854: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
4855: unless ($queryid=~/^\Q$host\E\_/) {
4856: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
4857: return 'error: '.$queryid;
4858: }
4859: my $reply = &get_query_reply($queryid);
4860: my $tries = 1;
4861: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
4862: $reply = &get_query_reply($queryid);
4863: $tries ++;
4864: }
4865: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
4866: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
4867: } else {
4868: my @responses = split(/:/,$reply);
4869: if ($homeserver eq $perlvar{'lonHostID'}) {
4870: foreach my $line (@responses) {
4871: my ($key,$value) = split(/=/,$line,2);
4872: $$replyref{$key} = $value;
4873: }
4874: } else {
4875: my $pathname = $perlvar{'lonDaemons'}.'/tmp';
4876: foreach my $line (@responses) {
4877: my ($key,$value) = split(/=/,$line);
4878: $$replyref{$key} = $value;
4879: if ($value > 0) {
4880: foreach my $item (@{$$affiliatesref{$key}}) {
4881: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
4882: my $destname = $pathname.'/'.$filename;
4883: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
4884: if ($xml_classlist =~ /^error/) {
4885: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
4886: } else {
4887: if ( open(FILE,">$destname") ) {
4888: print FILE &unescape($xml_classlist);
4889: close(FILE);
4890: } else {
4891: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
4892: }
4893: }
4894: }
4895: }
4896: }
4897: }
4898: return 'ok';
4899: }
4900: return 'error';
4901: }
4902:
4903: sub get_query_reply {
4904: my $queryid=shift;
4905: my $replyfile=$perlvar{'lonDaemons'}.'/tmp/'.$queryid;
4906: my $reply='';
4907: for (1..100) {
4908: sleep 2;
4909: if (-e $replyfile.'.end') {
4910: if (open(my $fh,$replyfile)) {
4911: $reply = join('',<$fh>);
4912: close($fh);
4913: } else { return 'error: reply_file_error'; }
4914: return &unescape($reply);
4915: }
4916: }
4917: return 'timeout:'.$queryid;
4918: }
4919:
4920: sub courselog_query {
4921: #
4922: # possible filters:
4923: # url: url or symb
4924: # username
4925: # domain
4926: # action: view, submit, grade
4927: # start: timestamp
4928: # end: timestamp
4929: #
4930: my (%filters)=@_;
4931: unless ($env{'request.course.id'}) { return 'no_course'; }
4932: if ($filters{'url'}) {
4933: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
4934: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
4935: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
4936: }
4937: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
4938: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
4939: return &log_query($cname,$cdom,'courselog',%filters);
4940: }
4941:
4942: sub userlog_query {
4943: #
4944: # possible filters:
4945: # action: log check role
4946: # start: timestamp
4947: # end: timestamp
4948: #
4949: my ($uname,$udom,%filters)=@_;
4950: return &log_query($uname,$udom,'userlog',%filters);
4951: }
4952:
4953: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
4954:
4955: sub auto_run {
4956: my ($cnum,$cdom) = @_;
4957: my $response = 0;
4958: my $settings;
4959: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
4960: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
4961: $settings = $domconfig{'autoenroll'};
4962: if ($settings->{'run'} eq '1') {
4963: $response = 1;
4964: }
4965: } else {
4966: my $homeserver;
4967: if (&is_course($cdom,$cnum)) {
4968: $homeserver = &homeserver($cnum,$cdom);
4969: } else {
4970: $homeserver = &domain($cdom,'primary');
4971: }
4972: if ($homeserver ne 'no_host') {
4973: $response = &reply('autorun:'.$cdom,$homeserver);
4974: }
4975: }
4976: return $response;
4977: }
4978:
4979: sub auto_get_sections {
4980: my ($cnum,$cdom,$inst_coursecode) = @_;
4981: my $homeserver = &homeserver($cnum,$cdom);
4982: my @secs = ();
4983: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
4984: unless ($response eq 'refused') {
4985: @secs = split(/:/,$response);
4986: }
4987: return @secs;
4988: }
4989:
4990: sub auto_new_course {
4991: my ($cnum,$cdom,$inst_course_id,$owner) = @_;
4992: my $homeserver = &homeserver($cnum,$cdom);
4993: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.$owner.':'.$cdom,$homeserver));
4994: return $response;
4995: }
4996:
4997: sub auto_validate_courseID {
4998: my ($cnum,$cdom,$inst_course_id) = @_;
4999: my $homeserver = &homeserver($cnum,$cdom);
5000: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
5001: return $response;
5002: }
5003:
5004: sub auto_create_password {
5005: my ($cnum,$cdom,$authparam,$udom) = @_;
5006: my ($homeserver,$response);
5007: my $create_passwd = 0;
5008: my $authchk = '';
5009: if ($udom =~ /^$match_domain$/) {
5010: $homeserver = &domain($udom,'primary');
5011: }
5012: if ($homeserver eq '') {
5013: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
5014: $homeserver = &homeserver($cnum,$cdom);
5015: }
5016: }
5017: if ($homeserver eq '') {
5018: $authchk = 'nodomain';
5019: } else {
5020: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
5021: if ($response eq 'refused') {
5022: $authchk = 'refused';
5023: } else {
5024: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
5025: }
5026: }
5027: return ($authparam,$create_passwd,$authchk);
5028: }
5029:
5030: sub auto_photo_permission {
5031: my ($cnum,$cdom,$students) = @_;
5032: my $homeserver = &homeserver($cnum,$cdom);
5033: my ($outcome,$perm_reqd,$conditions) =
5034: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
5035: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5036: return (undef,undef);
5037: }
5038: return ($outcome,$perm_reqd,$conditions);
5039: }
5040:
5041: sub auto_checkphotos {
5042: my ($uname,$udom,$pid) = @_;
5043: my $homeserver = &homeserver($uname,$udom);
5044: my ($result,$resulttype);
5045: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
5046: &escape($uname).':'.&escape($pid),
5047: $homeserver));
5048: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5049: return (undef,undef);
5050: }
5051: if ($outcome) {
5052: ($result,$resulttype) = split(/:/,$outcome);
5053: }
5054: return ($result,$resulttype);
5055: }
5056:
5057: sub auto_photochoice {
5058: my ($cnum,$cdom) = @_;
5059: my $homeserver = &homeserver($cnum,$cdom);
5060: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
5061: &escape($cdom),
5062: $homeserver)));
5063: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
5064: return (undef,undef);
5065: }
5066: return ($update,$comment);
5067: }
5068:
5069: sub auto_photoupdate {
5070: my ($affiliatesref,$dom,$cnum,$photo) = @_;
5071: my $homeserver = &homeserver($cnum,$dom);
5072: my $host=&hostname($homeserver);
5073: my $cmd = '';
5074: my $maxtries = 1;
5075: foreach my $affiliate (keys(%{$affiliatesref})) {
5076: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
5077: }
5078: $cmd =~ s/%%$//;
5079: $cmd = &escape($cmd);
5080: my $query = 'institutionalphotos';
5081: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
5082: unless ($queryid=~/^\Q$host\E\_/) {
5083: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
5084: return 'error: '.$queryid;
5085: }
5086: my $reply = &get_query_reply($queryid);
5087: my $tries = 1;
5088: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
5089: $reply = &get_query_reply($queryid);
5090: $tries ++;
5091: }
5092: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
5093: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
5094: } else {
5095: my @responses = split(/:/,$reply);
5096: my $outcome = shift(@responses);
5097: foreach my $item (@responses) {
5098: my ($key,$value) = split(/=/,$item);
5099: $$photo{$key} = $value;
5100: }
5101: return $outcome;
5102: }
5103: return 'error';
5104: }
5105:
5106: sub auto_instcode_format {
5107: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
5108: $cat_order) = @_;
5109: my $courses = '';
5110: my @homeservers;
5111: if ($caller eq 'global') {
5112: my %servers = &get_servers($codedom,'library');
5113: foreach my $tryserver (keys(%servers)) {
5114: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
5115: push(@homeservers,$tryserver);
5116: }
5117: }
5118: } else {
5119: push(@homeservers,&homeserver($caller,$codedom));
5120: }
5121: foreach my $code (keys(%{$instcodes})) {
5122: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
5123: }
5124: chop($courses);
5125: my $ok_response = 0;
5126: my $response;
5127: while (@homeservers > 0 && $ok_response == 0) {
5128: my $server = shift(@homeservers);
5129: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
5130: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
5131: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
5132: split(/:/,$response);
5133: %{$codes} = (%{$codes},&str2hash($codes_str));
5134: push(@{$codetitles},&str2array($codetitles_str));
5135: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
5136: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
5137: $ok_response = 1;
5138: }
5139: }
5140: if ($ok_response) {
5141: return 'ok';
5142: } else {
5143: return $response;
5144: }
5145: }
5146:
5147: sub auto_instcode_defaults {
5148: my ($domain,$returnhash,$code_order) = @_;
5149: my @homeservers;
5150:
5151: my %servers = &get_servers($domain,'library');
5152: foreach my $tryserver (keys(%servers)) {
5153: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
5154: push(@homeservers,$tryserver);
5155: }
5156: }
5157:
5158: my $response;
5159: foreach my $server (@homeservers) {
5160: $response=&reply('autoinstcodedefaults:'.$domain,$server);
5161: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
5162:
5163: foreach my $pair (split(/\&/,$response)) {
5164: my ($name,$value)=split(/\=/,$pair);
5165: if ($name eq 'code_order') {
5166: @{$code_order} = split(/\&/,&unescape($value));
5167: } else {
5168: $returnhash->{&unescape($name)}=&unescape($value);
5169: }
5170: }
5171: return 'ok';
5172: }
5173:
5174: return $response;
5175: }
5176:
5177: sub auto_validate_class_sec {
5178: my ($cdom,$cnum,$owners,$inst_class) = @_;
5179: my $homeserver = &homeserver($cnum,$cdom);
5180: my $ownerlist;
5181: if (ref($owners) eq 'ARRAY') {
5182: $ownerlist = join(',',@{$owners});
5183: } else {
5184: $ownerlist = $owners;
5185: }
5186: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
5187: &escape($ownerlist).':'.$cdom,$homeserver);
5188: return $response;
5189: }
5190:
5191: # ------------------------------------------------------- Course Group routines
5192:
5193: sub get_coursegroups {
5194: my ($cdom,$cnum,$group,$namespace) = @_;
5195: return(&dump($namespace,$cdom,$cnum,$group));
5196: }
5197:
5198: sub modify_coursegroup {
5199: my ($cdom,$cnum,$groupsettings) = @_;
5200: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
5201: }
5202:
5203: sub toggle_coursegroup_status {
5204: my ($cdom,$cnum,$group,$action) = @_;
5205: my ($from_namespace,$to_namespace);
5206: if ($action eq 'delete') {
5207: $from_namespace = 'coursegroups';
5208: $to_namespace = 'deleted_groups';
5209: } else {
5210: $from_namespace = 'deleted_groups';
5211: $to_namespace = 'coursegroups';
5212: }
5213: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
5214: if (my $tmp = &error(%curr_group)) {
5215: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
5216: return ('read error',$tmp);
5217: } else {
5218: my %savedsettings = %curr_group;
5219: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
5220: my $deloutcome;
5221: if ($result eq 'ok') {
5222: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
5223: } else {
5224: return ('write error',$result);
5225: }
5226: if ($deloutcome eq 'ok') {
5227: return 'ok';
5228: } else {
5229: return ('delete error',$deloutcome);
5230: }
5231: }
5232: }
5233:
5234: sub modify_group_roles {
5235: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs) = @_;
5236: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
5237: my $role = 'gr/'.&escape($userprivs);
5238: my ($uname,$udom) = split(/:/,$user);
5239: my $result = &assignrole($udom,$uname,$url,$role,$end,$start);
5240: if ($result eq 'ok') {
5241: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
5242: }
5243: return $result;
5244: }
5245:
5246: sub modify_coursegroup_membership {
5247: my ($cdom,$cnum,$membership) = @_;
5248: my $result = &put('groupmembership',$membership,$cdom,$cnum);
5249: return $result;
5250: }
5251:
5252: sub get_active_groups {
5253: my ($udom,$uname,$cdom,$cnum) = @_;
5254: my $now = time;
5255: my %groups = ();
5256: foreach my $key (keys(%env)) {
5257: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
5258: my ($start,$end) = split(/\./,$env{$key});
5259: if (($end!=0) && ($end<$now)) { next; }
5260: if (($start!=0) && ($start>$now)) { next; }
5261: if ($1 eq $cdom && $2 eq $cnum) {
5262: $groups{$3} = $env{$key} ;
5263: }
5264: }
5265: }
5266: return %groups;
5267: }
5268:
5269: sub get_group_membership {
5270: my ($cdom,$cnum,$group) = @_;
5271: return(&dump('groupmembership',$cdom,$cnum,$group));
5272: }
5273:
5274: sub get_users_groups {
5275: my ($udom,$uname,$courseid) = @_;
5276: my @usersgroups;
5277: my $cachetime=1800;
5278:
5279: my $hashid="$udom:$uname:$courseid";
5280: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
5281: if (defined($cached)) {
5282: @usersgroups = split(/:/,$grouplist);
5283: } else {
5284: $grouplist = '';
5285: my $courseurl = &courseid_to_courseurl($courseid);
5286: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
5287: my $access_end = $env{'course.'.$courseid.
5288: '.default_enrollment_end_date'};
5289: my $now = time;
5290: foreach my $key (keys(%roleshash)) {
5291: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
5292: my $group = $1;
5293: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
5294: my $start = $2;
5295: my $end = $1;
5296: if ($start == -1) { next; } # deleted from group
5297: if (($start!=0) && ($start>$now)) { next; }
5298: if (($end!=0) && ($end<$now)) {
5299: if ($access_end && $access_end < $now) {
5300: if ($access_end - $end < 86400) {
5301: push(@usersgroups,$group);
5302: }
5303: }
5304: next;
5305: }
5306: push(@usersgroups,$group);
5307: }
5308: }
5309: }
5310: @usersgroups = &sort_course_groups($courseid,@usersgroups);
5311: $grouplist = join(':',@usersgroups);
5312: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
5313: }
5314: return @usersgroups;
5315: }
5316:
5317: sub devalidate_getgroups_cache {
5318: my ($udom,$uname,$cdom,$cnum)=@_;
5319: my $courseid = $cdom.'_'.$cnum;
5320:
5321: my $hashid="$udom:$uname:$courseid";
5322: &devalidate_cache_new('getgroups',$hashid);
5323: }
5324:
5325: # ------------------------------------------------------------------ Plain Text
5326:
5327: sub plaintext {
5328: my ($short,$type,$cid) = @_;
5329: if ($short =~ /^cr/) {
5330: return (split('/',$short))[-1];
5331: }
5332: if (!defined($cid)) {
5333: $cid = $env{'request.course.id'};
5334: }
5335: if (defined($cid) && defined($env{'course.'.$cid.'.'.$short.'.plaintext'})) {
5336: return &Apache::lonlocal::mt($env{'course.'.$cid.'.'.$short.
5337: '.plaintext'});
5338: }
5339: my %rolenames = (
5340: Course => 'std',
5341: Group => 'alt1',
5342: );
5343: if (defined($type) &&
5344: defined($rolenames{$type}) &&
5345: defined($prp{$short}{$rolenames{$type}})) {
5346: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
5347: } else {
5348: return &Apache::lonlocal::mt($prp{$short}{'std'});
5349: }
5350: }
5351:
5352: # ----------------------------------------------------------------- Assign Role
5353:
5354: sub assignrole {
5355: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll)=@_;
5356: my $mrole;
5357: if ($role =~ /^cr\//) {
5358: my $cwosec=$url;
5359: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
5360: unless (&allowed('ccr',$cwosec)) {
5361: &logthis('Refused custom assignrole: '.
5362: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
5363: $env{'user.name'}.' at '.$env{'user.domain'});
5364: return 'refused';
5365: }
5366: $mrole='cr';
5367: } elsif ($role =~ /^gr\//) {
5368: my $cwogrp=$url;
5369: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
5370: unless (&allowed('mdg',$cwogrp)) {
5371: &logthis('Refused group assignrole: '.
5372: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
5373: $env{'user.name'}.' at '.$env{'user.domain'});
5374: return 'refused';
5375: }
5376: $mrole='gr';
5377: } else {
5378: my $cwosec=$url;
5379: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
5380: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
5381: my $refused;
5382: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
5383: if (!(&allowed('c'.$role,$url))) {
5384: $refused = 1;
5385: }
5386: } else {
5387: $refused = 1;
5388: }
5389: if ($refused) {
5390: if (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
5391: $refused = '';
5392: } else {
5393: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
5394: ' '.$role.' '.$end.' '.$start.' by '.
5395: $env{'user.name'}.' at '.$env{'user.domain'});
5396: return 'refused';
5397: }
5398: }
5399: }
5400: $mrole=$role;
5401: }
5402: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
5403: "$udom:$uname:$url".'_'."$mrole=$role";
5404: if ($end) { $command.='_'.$end; }
5405: if ($start) {
5406: if ($end) {
5407: $command.='_'.$start;
5408: } else {
5409: $command.='_0_'.$start;
5410: }
5411: }
5412: my $origstart = $start;
5413: my $origend = $end;
5414: # actually delete
5415: if ($deleteflag) {
5416: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
5417: # modify command to delete the role
5418: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
5419: "$udom:$uname:$url".'_'."$mrole";
5420: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
5421: # set start and finish to negative values for userrolelog
5422: $start=-1;
5423: $end=-1;
5424: }
5425: }
5426: # send command
5427: my $answer=&reply($command,&homeserver($uname,$udom));
5428: # log new user role if status is ok
5429: if ($answer eq 'ok') {
5430: &userrolelog($role,$uname,$udom,$url,$start,$end);
5431: # for course roles, perform group memberships changes triggered by role change.
5432: unless ($role =~ /^gr/) {
5433: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
5434: $origstart);
5435: }
5436: }
5437: return $answer;
5438: }
5439:
5440: # -------------------------------------------------- Modify user authentication
5441: # Overrides without validation
5442:
5443: sub modifyuserauth {
5444: my ($udom,$uname,$umode,$upass)=@_;
5445: my $uhome=&homeserver($uname,$udom);
5446: unless (&allowed('mau',$udom)) { return 'refused'; }
5447: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
5448: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
5449: ' in domain '.$env{'request.role.domain'});
5450: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
5451: &escape($upass),$uhome);
5452: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
5453: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
5454: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
5455: &log($udom,,$uname,$uhome,
5456: 'Authentication changed by '.$env{'user.domain'}.', '.
5457: $env{'user.name'}.', '.$umode.
5458: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
5459: unless ($reply eq 'ok') {
5460: &logthis('Authentication mode error: '.$reply);
5461: return 'error: '.$reply;
5462: }
5463: return 'ok';
5464: }
5465:
5466: # --------------------------------------------------------------- Modify a user
5467:
5468: sub modifyuser {
5469: my ($udom, $uname, $uid,
5470: $umode, $upass, $first,
5471: $middle, $last, $gene,
5472: $forceid, $desiredhome, $email)=@_;
5473: $udom= &LONCAPA::clean_domain($udom);
5474: $uname=&LONCAPA::clean_username($uname);
5475: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
5476: $umode.', '.$first.', '.$middle.', '.
5477: $last.', '.$gene.'(forceid: '.$forceid.')'.
5478: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
5479: ' desiredhome not specified').
5480: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
5481: ' in domain '.$env{'request.role.domain'});
5482: my $uhome=&homeserver($uname,$udom,'true');
5483: # ----------------------------------------------------------------- Create User
5484: if (($uhome eq 'no_host') &&
5485: (($umode && $upass) || ($umode eq 'localauth'))) {
5486: my $unhome='';
5487: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
5488: $unhome = $desiredhome;
5489: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
5490: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
5491: } else { # load balancing routine for determining $unhome
5492: my $loadm=10000000;
5493: my %servers = &get_servers($udom,'library');
5494: foreach my $tryserver (keys(%servers)) {
5495: my $answer=reply('load',$tryserver);
5496: if (($answer=~/\d+/) && ($answer<$loadm)) {
5497: $loadm=$answer;
5498: $unhome=$tryserver;
5499: }
5500: }
5501: }
5502: if (($unhome eq '') || ($unhome eq 'no_host')) {
5503: return 'error: unable to find a home server for '.$uname.
5504: ' in domain '.$udom;
5505: }
5506: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
5507: &escape($upass),$unhome);
5508: unless ($reply eq 'ok') {
5509: return 'error: '.$reply;
5510: }
5511: $uhome=&homeserver($uname,$udom,'true');
5512: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
5513: return 'error: unable verify users home machine.';
5514: }
5515: } # End of creation of new user
5516: # ---------------------------------------------------------------------- Add ID
5517: if ($uid) {
5518: $uid=~tr/A-Z/a-z/;
5519: my %uidhash=&idrget($udom,$uname);
5520: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
5521: && (!$forceid)) {
5522: unless ($uid eq $uidhash{$uname}) {
5523: return 'error: user id "'.$uid.'" does not match '.
5524: 'current user id "'.$uidhash{$uname}.'".';
5525: }
5526: } else {
5527: &idput($udom,($uname => $uid));
5528: }
5529: }
5530: # -------------------------------------------------------------- Add names, etc
5531: my @tmp=&get('environment',
5532: ['firstname','middlename','lastname','generation','id',
5533: 'permanentemail'],
5534: $udom,$uname);
5535: my %names;
5536: if ($tmp[0] =~ m/^error:.*/) {
5537: %names=();
5538: } else {
5539: %names = @tmp;
5540: }
5541: #
5542: # Make sure to not trash student environment if instructor does not bother
5543: # to supply name and email information
5544: #
5545: if ($first) { $names{'firstname'} = $first; }
5546: if (defined($middle)) { $names{'middlename'} = $middle; }
5547: if ($last) { $names{'lastname'} = $last; }
5548: if (defined($gene)) { $names{'generation'} = $gene; }
5549: if ($email) {
5550: $email=~s/[^\w\@\.\-\,]//gs;
5551: if ($email=~/\@/) { $names{'notification'} = $email;
5552: $names{'critnotification'} = $email;
5553: $names{'permanentemail'} = $email; }
5554: }
5555: if ($uid) { $names{'id'} = $uid; }
5556: my $reply = &put('environment', \%names, $udom,$uname);
5557: if ($reply ne 'ok') { return 'error: '.$reply; }
5558: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
5559: &devalidate_cache_new('namescache',$uname.':'.$udom);
5560: &logthis('Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
5561: $umode.', '.$first.', '.$middle.', '.
5562: $last.', '.$gene.' by '.
5563: $env{'user.name'}.' at '.$env{'user.domain'});
5564: return 'ok';
5565: }
5566:
5567: # -------------------------------------------------------------- Modify student
5568:
5569: sub modifystudent {
5570: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
5571: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid)=@_;
5572: if (!$cid) {
5573: unless ($cid=$env{'request.course.id'}) {
5574: return 'not_in_class';
5575: }
5576: }
5577: # --------------------------------------------------------------- Make the user
5578: my $reply=&modifyuser
5579: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
5580: $desiredhome,$email);
5581: unless ($reply eq 'ok') { return $reply; }
5582: # This will cause &modify_student_enrollment to get the uid from the
5583: # students environment
5584: $uid = undef if (!$forceid);
5585: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
5586: $gene,$usec,$end,$start,$type,$locktype,$cid);
5587: return $reply;
5588: }
5589:
5590: sub modify_student_enrollment {
5591: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll) = @_;
5592: my ($cdom,$cnum,$chome);
5593: if (!$cid) {
5594: unless ($cid=$env{'request.course.id'}) {
5595: return 'not_in_class';
5596: }
5597: $cdom=$env{'course.'.$cid.'.domain'};
5598: $cnum=$env{'course.'.$cid.'.num'};
5599: } else {
5600: ($cdom,$cnum)=split(/_/,$cid);
5601: }
5602: $chome=$env{'course.'.$cid.'.home'};
5603: if (!$chome) {
5604: $chome=&homeserver($cnum,$cdom);
5605: }
5606: if (!$chome) { return 'unknown_course'; }
5607: # Make sure the user exists
5608: my $uhome=&homeserver($uname,$udom);
5609: if (($uhome eq '') || ($uhome eq 'no_host')) {
5610: return 'error: no such user';
5611: }
5612: # Get student data if we were not given enough information
5613: if (!defined($first) || $first eq '' ||
5614: !defined($last) || $last eq '' ||
5615: !defined($uid) || $uid eq '' ||
5616: !defined($middle) || $middle eq '' ||
5617: !defined($gene) || $gene eq '') {
5618: # They did not supply us with enough data to enroll the student, so
5619: # we need to pick up more information.
5620: my %tmp = &get('environment',
5621: ['firstname','middlename','lastname', 'generation','id']
5622: ,$udom,$uname);
5623:
5624: #foreach my $key (keys(%tmp)) {
5625: # &logthis("key $key = ".$tmp{$key});
5626: #}
5627: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
5628: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
5629: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
5630: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
5631: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
5632: }
5633: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
5634: my $reply=cput('classlist',
5635: {"$uname:$udom" =>
5636: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
5637: $cdom,$cnum);
5638: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
5639: return 'error: '.$reply;
5640: } else {
5641: &devalidate_getsection_cache($udom,$uname,$cid);
5642: }
5643: # Add student role to user
5644: my $uurl='/'.$cid;
5645: $uurl=~s/\_/\//g;
5646: if ($usec) {
5647: $uurl.='/'.$usec;
5648: }
5649: return &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,$selfenroll);
5650: }
5651:
5652: sub format_name {
5653: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
5654: my $name;
5655: if ($first ne 'lastname') {
5656: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
5657: } else {
5658: if ($lastname=~/\S/) {
5659: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
5660: $name=~s/\s+,/,/;
5661: } else {
5662: $name.= $firstname.' '.$middlename.' '.$generation;
5663: }
5664: }
5665: $name=~s/^\s+//;
5666: $name=~s/\s+$//;
5667: $name=~s/\s+/ /g;
5668: return $name;
5669: }
5670:
5671: # ------------------------------------------------- Write to course preferences
5672:
5673: sub writecoursepref {
5674: my ($courseid,%prefs)=@_;
5675: $courseid=~s/^\///;
5676: $courseid=~s/\_/\//g;
5677: my ($cdomain,$cnum)=split(/\//,$courseid);
5678: my $chome=homeserver($cnum,$cdomain);
5679: if (($chome eq '') || ($chome eq 'no_host')) {
5680: return 'error: no such course';
5681: }
5682: my $cstring='';
5683: foreach my $pref (keys(%prefs)) {
5684: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
5685: }
5686: $cstring=~s/\&$//;
5687: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
5688: }
5689:
5690: # ---------------------------------------------------------- Make/modify course
5691:
5692: sub createcourse {
5693: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
5694: $course_owner,$crstype)=@_;
5695: $url=&declutter($url);
5696: my $cid='';
5697: unless (&allowed('ccc',$udom)) {
5698: return 'refused';
5699: }
5700: # ------------------------------------------------------------------- Create ID
5701: my $uname=int(1+rand(9)).
5702: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
5703: substr($$.time,0,5).unpack("H8",pack("I32",time)).
5704: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
5705: # ----------------------------------------------- Make sure that does not exist
5706: my $uhome=&homeserver($uname,$udom,'true');
5707: unless (($uhome eq '') || ($uhome eq 'no_host')) {
5708: $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
5709: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
5710: $uhome=&homeserver($uname,$udom,'true');
5711: unless (($uhome eq '') || ($uhome eq 'no_host')) {
5712: return 'error: unable to generate unique course-ID';
5713: }
5714: }
5715: # ------------------------------------------------ Check supplied server name
5716: $course_server = $env{'user.homeserver'} if (! defined($course_server));
5717: if (! &is_library($course_server)) {
5718: return 'error:bad server name '.$course_server;
5719: }
5720: # ------------------------------------------------------------- Make the course
5721: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
5722: $course_server);
5723: unless ($reply eq 'ok') { return 'error: '.$reply; }
5724: $uhome=&homeserver($uname,$udom,'true');
5725: if (($uhome eq '') || ($uhome eq 'no_host')) {
5726: return 'error: no such course';
5727: }
5728: # ----------------------------------------------------------------- Course made
5729: # log existence
5730: my $newcourse = {
5731: $udom.'_'.$uname => {
5732: description => $description,
5733: inst_code => $inst_code,
5734: owner => $course_owner,
5735: type => $crstype,
5736: },
5737: };
5738: &courseidput($udom,$newcourse,$uhome,'notime');
5739: # set toplevel url
5740: my $topurl=$url;
5741: unless ($nonstandard) {
5742: # ------------------------------------------ For standard courses, make top url
5743: my $mapurl=&clutter($url);
5744: if ($mapurl eq '/res/') { $mapurl=''; }
5745: $env{'form.initmap'}=(<<ENDINITMAP);
5746: <map>
5747: <resource id="1" type="start"></resource>
5748: <resource id="2" src="$mapurl"></resource>
5749: <resource id="3" type="finish"></resource>
5750: <link index="1" from="1" to="2"></link>
5751: <link index="2" from="2" to="3"></link>
5752: </map>
5753: ENDINITMAP
5754: $topurl=&declutter(
5755: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
5756: );
5757: }
5758: # ----------------------------------------------------------- Write preferences
5759: &writecoursepref($udom.'_'.$uname,
5760: ('description' => $description,
5761: 'url' => $topurl));
5762: return '/'.$udom.'/'.$uname;
5763: }
5764:
5765: sub is_course {
5766: my ($cdom,$cnum) = @_;
5767: my %courses = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,
5768: undef,'.');
5769: if (exists($courses{$cdom.'_'.$cnum})) {
5770: return 1;
5771: }
5772: return 0;
5773: }
5774:
5775: # ---------------------------------------------------------- Assign Custom Role
5776:
5777: sub assigncustomrole {
5778: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag)=@_;
5779: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
5780: $end,$start,$deleteflag);
5781: }
5782:
5783: # ----------------------------------------------------------------- Revoke Role
5784:
5785: sub revokerole {
5786: my ($udom,$uname,$url,$role,$deleteflag)=@_;
5787: my $now=time;
5788: return &assignrole($udom,$uname,$url,$role,$now,$deleteflag);
5789: }
5790:
5791: # ---------------------------------------------------------- Revoke Custom Role
5792:
5793: sub revokecustomrole {
5794: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag)=@_;
5795: my $now=time;
5796: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
5797: $deleteflag);
5798: }
5799:
5800: # ------------------------------------------------------------ Disk usage
5801: sub diskusage {
5802: my ($udom,$uname,$directoryRoot)=@_;
5803: $directoryRoot =~ s/\/$//;
5804: my $listing=&reply('du:'.$directoryRoot,homeserver($uname,$udom));
5805: return $listing;
5806: }
5807:
5808: sub is_locked {
5809: my ($file_name, $domain, $user) = @_;
5810: my @check;
5811: my $is_locked;
5812: push @check, $file_name;
5813: my %locked = &get('file_permissions',\@check,
5814: $env{'user.domain'},$env{'user.name'});
5815: my ($tmp)=keys(%locked);
5816: if ($tmp=~/^error:/) { undef(%locked); }
5817:
5818: if (ref($locked{$file_name}) eq 'ARRAY') {
5819: $is_locked = 'false';
5820: foreach my $entry (@{$locked{$file_name}}) {
5821: if (ref($entry) eq 'ARRAY') {
5822: $is_locked = 'true';
5823: last;
5824: }
5825: }
5826: } else {
5827: $is_locked = 'false';
5828: }
5829: }
5830:
5831: sub declutter_portfile {
5832: my ($file) = @_;
5833: $file =~ s{^(/portfolio/|portfolio/)}{/};
5834: return $file;
5835: }
5836:
5837: # ------------------------------------------------------------- Mark as Read Only
5838:
5839: sub mark_as_readonly {
5840: my ($domain,$user,$files,$what) = @_;
5841: my %current_permissions = &dump('file_permissions',$domain,$user);
5842: my ($tmp)=keys(%current_permissions);
5843: if ($tmp=~/^error:/) { undef(%current_permissions); }
5844: foreach my $file (@{$files}) {
5845: $file = &declutter_portfile($file);
5846: push(@{$current_permissions{$file}},$what);
5847: }
5848: &put('file_permissions',\%current_permissions,$domain,$user);
5849: return;
5850: }
5851:
5852: # ------------------------------------------------------------Save Selected Files
5853:
5854: sub save_selected_files {
5855: my ($user, $path, @files) = @_;
5856: my $filename = $user."savedfiles";
5857: my @other_files = &files_not_in_path($user, $path);
5858: open (OUT, '>'.$tmpdir.$filename);
5859: foreach my $file (@files) {
5860: print (OUT $env{'form.currentpath'}.$file."\n");
5861: }
5862: foreach my $file (@other_files) {
5863: print (OUT $file."\n");
5864: }
5865: close (OUT);
5866: return 'ok';
5867: }
5868:
5869: sub clear_selected_files {
5870: my ($user) = @_;
5871: my $filename = $user."savedfiles";
5872: open (OUT, '>'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
5873: print (OUT undef);
5874: close (OUT);
5875: return ("ok");
5876: }
5877:
5878: sub files_in_path {
5879: my ($user, $path) = @_;
5880: my $filename = $user."savedfiles";
5881: my %return_files;
5882: open (IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
5883: while (my $line_in = <IN>) {
5884: chomp ($line_in);
5885: my @paths_and_file = split (m!/!, $line_in);
5886: my $file_part = pop (@paths_and_file);
5887: my $path_part = join ('/', @paths_and_file);
5888: $path_part.='/';
5889: my $path_and_file = $path_part.$file_part;
5890: if ($path_part eq $path) {
5891: $return_files{$file_part}= 'selected';
5892: }
5893: }
5894: close (IN);
5895: return (\%return_files);
5896: }
5897:
5898: # called in portfolio select mode, to show files selected NOT in current directory
5899: sub files_not_in_path {
5900: my ($user, $path) = @_;
5901: my $filename = $user."savedfiles";
5902: my @return_files;
5903: my $path_part;
5904: open(IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
5905: while (my $line = <IN>) {
5906: #ok, I know it's clunky, but I want it to work
5907: my @paths_and_file = split(m|/|, $line);
5908: my $file_part = pop(@paths_and_file);
5909: chomp($file_part);
5910: my $path_part = join('/', @paths_and_file);
5911: $path_part .= '/';
5912: my $path_and_file = $path_part.$file_part;
5913: if ($path_part ne $path) {
5914: push(@return_files, ($path_and_file));
5915: }
5916: }
5917: close(OUT);
5918: return (@return_files);
5919: }
5920:
5921: #----------------------------------------------Get portfolio file permissions
5922:
5923: sub get_portfile_permissions {
5924: my ($domain,$user) = @_;
5925: my %current_permissions = &dump('file_permissions',$domain,$user);
5926: my ($tmp)=keys(%current_permissions);
5927: if ($tmp=~/^error:/) { undef(%current_permissions); }
5928: return \%current_permissions;
5929: }
5930:
5931: #---------------------------------------------Get portfolio file access controls
5932:
5933: sub get_access_controls {
5934: my ($current_permissions,$group,$file) = @_;
5935: my %access;
5936: my $real_file = $file;
5937: $file =~ s/\.meta$//;
5938: if (defined($file)) {
5939: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
5940: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
5941: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
5942: }
5943: }
5944: } else {
5945: foreach my $key (keys(%{$current_permissions})) {
5946: if ($key =~ /\0accesscontrol$/) {
5947: if (defined($group)) {
5948: if ($key !~ m-^\Q$group\E/-) {
5949: next;
5950: }
5951: }
5952: my ($fullpath) = split(/\0/,$key);
5953: if (ref($$current_permissions{$key}) eq 'HASH') {
5954: foreach my $control (keys(%{$$current_permissions{$key}})) {
5955: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
5956: }
5957: }
5958: }
5959: }
5960: }
5961: return %access;
5962: }
5963:
5964: sub modify_access_controls {
5965: my ($file_name,$changes,$domain,$user)=@_;
5966: my ($outcome,$deloutcome);
5967: my %store_permissions;
5968: my %new_values;
5969: my %new_control;
5970: my %translation;
5971: my @deletions = ();
5972: my $now = time;
5973: if (exists($$changes{'activate'})) {
5974: if (ref($$changes{'activate'}) eq 'HASH') {
5975: my @newitems = sort(keys(%{$$changes{'activate'}}));
5976: my $numnew = scalar(@newitems);
5977: for (my $i=0; $i<$numnew; $i++) {
5978: my $newkey = $newitems[$i];
5979: my $newid = &Apache::loncommon::get_cgi_id();
5980: if ($newkey =~ /^\d+:/) {
5981: $newkey =~ s/^(\d+)/$newid/;
5982: $translation{$1} = $newid;
5983: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
5984: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
5985: $translation{$1} = $newid;
5986: }
5987: $new_values{$file_name."\0".$newkey} =
5988: $$changes{'activate'}{$newitems[$i]};
5989: $new_control{$newkey} = $now;
5990: }
5991: }
5992: }
5993: my %todelete;
5994: my %changed_items;
5995: foreach my $action ('delete','update') {
5996: if (exists($$changes{$action})) {
5997: if (ref($$changes{$action}) eq 'HASH') {
5998: foreach my $key (keys(%{$$changes{$action}})) {
5999: my ($itemnum) = ($key =~ /^([^:]+):/);
6000: if ($action eq 'delete') {
6001: $todelete{$itemnum} = 1;
6002: } else {
6003: $changed_items{$itemnum} = $key;
6004: }
6005: }
6006: }
6007: }
6008: }
6009: # get lock on access controls for file.
6010: my $lockhash = {
6011: $file_name."\0".'locked_access_records' => $env{'user.name'}.
6012: ':'.$env{'user.domain'},
6013: };
6014: my $tries = 0;
6015: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
6016:
6017: while (($gotlock ne 'ok') && $tries <3) {
6018: $tries ++;
6019: sleep 1;
6020: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
6021: }
6022: if ($gotlock eq 'ok') {
6023: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
6024: my ($tmp)=keys(%curr_permissions);
6025: if ($tmp=~/^error:/) { undef(%curr_permissions); }
6026: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
6027: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
6028: if (ref($curr_controls) eq 'HASH') {
6029: foreach my $control_item (keys(%{$curr_controls})) {
6030: my ($itemnum) = ($control_item =~ /^([^:]+):/);
6031: if (defined($todelete{$itemnum})) {
6032: push(@deletions,$file_name."\0".$control_item);
6033: } else {
6034: if (defined($changed_items{$itemnum})) {
6035: $new_control{$changed_items{$itemnum}} = $now;
6036: push(@deletions,$file_name."\0".$control_item);
6037: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
6038: } else {
6039: $new_control{$control_item} = $$curr_controls{$control_item};
6040: }
6041: }
6042: }
6043: }
6044: }
6045: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
6046: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
6047: $outcome = &put('file_permissions',\%new_values,$domain,$user);
6048: # remove lock
6049: my @del_lock = ($file_name."\0".'locked_access_records');
6050: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
6051: my ($file,$group);
6052: if (&is_course($domain,$user)) {
6053: ($group,$file) = split(/\//,$file_name,2);
6054: } else {
6055: $file = $file_name;
6056: }
6057: my $sqlresult =
6058: &update_portfolio_table($user,$domain,$file,'portfolio_access',
6059: $group);
6060: } else {
6061: $outcome = "error: could not obtain lockfile\n";
6062: }
6063: return ($outcome,$deloutcome,\%new_values,\%translation);
6064: }
6065:
6066: sub make_public_indefinitely {
6067: my ($requrl) = @_;
6068: my $now = time;
6069: my $action = 'activate';
6070: my $aclnum = 0;
6071: if (&is_portfolio_url($requrl)) {
6072: my (undef,$udom,$unum,$file_name,$group) =
6073: &parse_portfolio_url($requrl);
6074: my $current_perms = &get_portfile_permissions($udom,$unum);
6075: my %access_controls = &get_access_controls($current_perms,
6076: $group,$file_name);
6077: foreach my $key (keys(%{$access_controls{$file_name}})) {
6078: my ($num,$scope,$end,$start) =
6079: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
6080: if ($scope eq 'public') {
6081: if ($start <= $now && $end == 0) {
6082: $action = 'none';
6083: } else {
6084: $action = 'update';
6085: $aclnum = $num;
6086: }
6087: last;
6088: }
6089: }
6090: if ($action eq 'none') {
6091: return 'ok';
6092: } else {
6093: my %changes;
6094: my $newend = 0;
6095: my $newstart = $now;
6096: my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
6097: $changes{$action}{$newkey} = {
6098: type => 'public',
6099: time => {
6100: start => $newstart,
6101: end => $newend,
6102: },
6103: };
6104: my ($outcome,$deloutcome,$new_values,$translation) =
6105: &modify_access_controls($file_name,\%changes,$udom,$unum);
6106: return $outcome;
6107: }
6108: } else {
6109: return 'invalid';
6110: }
6111: }
6112:
6113: #------------------------------------------------------Get Marked as Read Only
6114:
6115: sub get_marked_as_readonly {
6116: my ($domain,$user,$what,$group) = @_;
6117: my $current_permissions = &get_portfile_permissions($domain,$user);
6118: my @readonly_files;
6119: my $cmp1=$what;
6120: if (ref($what)) { $cmp1=join('',@{$what}) };
6121: while (my ($file_name,$value) = each(%{$current_permissions})) {
6122: if (defined($group)) {
6123: if ($file_name !~ m-^\Q$group\E/-) {
6124: next;
6125: }
6126: }
6127: if (ref($value) eq "ARRAY"){
6128: foreach my $stored_what (@{$value}) {
6129: my $cmp2=$stored_what;
6130: if (ref($stored_what) eq 'ARRAY') {
6131: $cmp2=join('',@{$stored_what});
6132: }
6133: if ($cmp1 eq $cmp2) {
6134: push(@readonly_files, $file_name);
6135: last;
6136: } elsif (!defined($what)) {
6137: push(@readonly_files, $file_name);
6138: last;
6139: }
6140: }
6141: }
6142: }
6143: return @readonly_files;
6144: }
6145: #-----------------------------------------------------------Get Marked as Read Only Hash
6146:
6147: sub get_marked_as_readonly_hash {
6148: my ($current_permissions,$group,$what) = @_;
6149: my %readonly_files;
6150: while (my ($file_name,$value) = each(%{$current_permissions})) {
6151: if (defined($group)) {
6152: if ($file_name !~ m-^\Q$group\E/-) {
6153: next;
6154: }
6155: }
6156: if (ref($value) eq "ARRAY"){
6157: foreach my $stored_what (@{$value}) {
6158: if (ref($stored_what) eq 'ARRAY') {
6159: foreach my $lock_descriptor(@{$stored_what}) {
6160: if ($lock_descriptor eq 'graded') {
6161: $readonly_files{$file_name} = 'graded';
6162: } elsif ($lock_descriptor eq 'handback') {
6163: $readonly_files{$file_name} = 'handback';
6164: } else {
6165: if (!exists($readonly_files{$file_name})) {
6166: $readonly_files{$file_name} = 'locked';
6167: }
6168: }
6169: }
6170: }
6171: }
6172: }
6173: }
6174: return %readonly_files;
6175: }
6176: # ------------------------------------------------------------ Unmark as Read Only
6177:
6178: sub unmark_as_readonly {
6179: # unmarks $file_name (if $file_name is defined), or all files locked by $what
6180: # for portfolio submissions, $what contains [$symb,$crsid]
6181: my ($domain,$user,$what,$file_name,$group) = @_;
6182: $file_name = &declutter_portfile($file_name);
6183: my $symb_crs = $what;
6184: if (ref($what)) { $symb_crs=join('',@$what); }
6185: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
6186: my ($tmp)=keys(%current_permissions);
6187: if ($tmp=~/^error:/) { undef(%current_permissions); }
6188: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
6189: foreach my $file (@readonly_files) {
6190: my $clean_file = &declutter_portfile($file);
6191: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
6192: my $current_locks = $current_permissions{$file};
6193: my @new_locks;
6194: my @del_keys;
6195: if (ref($current_locks) eq "ARRAY"){
6196: foreach my $locker (@{$current_locks}) {
6197: my $compare=$locker;
6198: if (ref($locker) eq 'ARRAY') {
6199: $compare=join('',@{$locker});
6200: if ($compare ne $symb_crs) {
6201: push(@new_locks, $locker);
6202: }
6203: }
6204: }
6205: if (scalar(@new_locks) > 0) {
6206: $current_permissions{$file} = \@new_locks;
6207: } else {
6208: push(@del_keys, $file);
6209: &del('file_permissions',\@del_keys, $domain, $user);
6210: delete($current_permissions{$file});
6211: }
6212: }
6213: }
6214: &put('file_permissions',\%current_permissions,$domain,$user);
6215: return;
6216: }
6217:
6218: # ------------------------------------------------------------ Directory lister
6219:
6220: sub dirlist {
6221: my ($uri,$userdomain,$username,$alternateDirectoryRoot)=@_;
6222:
6223: $uri=~s/^\///;
6224: $uri=~s/\/$//;
6225: my ($udom, $uname);
6226: (undef,$udom,$uname)=split(/\//,$uri);
6227: if(defined($userdomain)) {
6228: $udom = $userdomain;
6229: }
6230: if(defined($username)) {
6231: $uname = $username;
6232: }
6233:
6234: my $dirRoot = $perlvar{'lonDocRoot'};
6235: if(defined($alternateDirectoryRoot)) {
6236: $dirRoot = $alternateDirectoryRoot;
6237: $dirRoot =~ s/\/$//;
6238: }
6239:
6240: if($udom) {
6241: if($uname) {
6242: my $listing = &reply('ls2:'.$dirRoot.'/'.$uri,
6243: &homeserver($uname,$udom));
6244: my @listing_results;
6245: if ($listing eq 'unknown_cmd') {
6246: $listing = &reply('ls:'.$dirRoot.'/'.$uri,
6247: &homeserver($uname,$udom));
6248: @listing_results = split(/:/,$listing);
6249: } else {
6250: @listing_results = map { &unescape($_); } split(/:/,$listing);
6251: }
6252: return @listing_results;
6253: } elsif(!defined($alternateDirectoryRoot)) {
6254: my %allusers;
6255: my %servers = &get_servers($udom,'library');
6256: foreach my $tryserver (keys(%servers)) {
6257: my $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
6258: $udom, $tryserver);
6259: my @listing_results;
6260: if ($listing eq 'unknown_cmd') {
6261: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
6262: $udom, $tryserver);
6263: @listing_results = split(/:/,$listing);
6264: } else {
6265: @listing_results =
6266: map { &unescape($_); } split(/:/,$listing);
6267: }
6268: if ($listing_results[0] ne 'no_such_dir' &&
6269: $listing_results[0] ne 'empty' &&
6270: $listing_results[0] ne 'con_lost') {
6271: foreach my $line (@listing_results) {
6272: my ($entry) = split(/&/,$line,2);
6273: $allusers{$entry} = 1;
6274: }
6275: }
6276: }
6277: my $alluserstr='';
6278: foreach my $user (sort(keys(%allusers))) {
6279: $alluserstr.=$user.'&user:';
6280: }
6281: $alluserstr=~s/:$//;
6282: return split(/:/,$alluserstr);
6283: } else {
6284: return ('missing user name');
6285: }
6286: } elsif(!defined($alternateDirectoryRoot)) {
6287: my @all_domains = sort(&all_domains());
6288: foreach my $domain (@all_domains) {
6289: $domain = $perlvar{'lonDocRoot'}.'/res/'.$domain.'/&domain';
6290: }
6291: return @all_domains;
6292: } else {
6293: return ('missing domain');
6294: }
6295: }
6296:
6297: # --------------------------------------------- GetFileTimestamp
6298: # This function utilizes dirlist and returns the date stamp for
6299: # when it was last modified. It will also return an error of -1
6300: # if an error occurs
6301:
6302: ##
6303: ## FIXME: This subroutine assumes its caller knows something about the
6304: ## directory structure of the home server for the student ($root).
6305: ## Not a good assumption to make. Since this is for looking up files
6306: ## in user directories, the full path should be constructed by lond, not
6307: ## whatever machine we request data from.
6308: ##
6309: sub GetFileTimestamp {
6310: my ($studentDomain,$studentName,$filename,$root)=@_;
6311: $studentDomain = &LONCAPA::clean_domain($studentDomain);
6312: $studentName = &LONCAPA::clean_username($studentName);
6313: my $subdir=$studentName.'__';
6314: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
6315: my $proname="$studentDomain/$subdir/$studentName";
6316: $proname .= '/'.$filename;
6317: my ($fileStat) = &Apache::lonnet::dirlist($proname, $studentDomain,
6318: $studentName, $root);
6319: my @stats = split('&', $fileStat);
6320: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
6321: # @stats contains first the filename, then the stat output
6322: return $stats[10]; # so this is 10 instead of 9.
6323: } else {
6324: return -1;
6325: }
6326: }
6327:
6328: sub stat_file {
6329: my ($uri) = @_;
6330: $uri = &clutter_with_no_wrapper($uri);
6331:
6332: my ($udom,$uname,$file,$dir);
6333: if ($uri =~ m-^/(uploaded|editupload)/-) {
6334: ($udom,$uname,$file) =
6335: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
6336: $file = 'userfiles/'.$file;
6337: $dir = &propath($udom,$uname);
6338: }
6339: if ($uri =~ m-^/res/-) {
6340: ($udom,$uname) =
6341: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
6342: $file = $uri;
6343: }
6344:
6345: if (!$udom || !$uname || !$file) {
6346: # unable to handle the uri
6347: return ();
6348: }
6349:
6350: my ($result) = &dirlist($file,$udom,$uname,$dir);
6351: my @stats = split('&', $result);
6352:
6353: if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
6354: shift(@stats); #filename is first
6355: return @stats;
6356: }
6357: return ();
6358: }
6359:
6360: # -------------------------------------------------------- Value of a Condition
6361:
6362: # gets the value of a specific preevaluated condition
6363: # stored in the string $env{user.state.<cid>}
6364: # or looks up a condition reference in the bighash and if if hasn't
6365: # already been evaluated recurses into docondval to get the value of
6366: # the condition, then memoizing it to
6367: # $env{user.state.<cid>.<condition>}
6368: sub directcondval {
6369: my $number=shift;
6370: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
6371: &Apache::lonuserstate::evalstate();
6372: }
6373: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
6374: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
6375: } elsif ($number =~ /^_/) {
6376: my $sub_condition;
6377: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
6378: &GDBM_READER(),0640)) {
6379: $sub_condition=$bighash{'conditions'.$number};
6380: untie(%bighash);
6381: }
6382: my $value = &docondval($sub_condition);
6383: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
6384: return $value;
6385: }
6386: if ($env{'user.state.'.$env{'request.course.id'}}) {
6387: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
6388: } else {
6389: return 2;
6390: }
6391: }
6392:
6393: # get the collection of conditions for this resource
6394: sub condval {
6395: my $condidx=shift;
6396: my $allpathcond='';
6397: foreach my $cond (split(/\|/,$condidx)) {
6398: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
6399: $allpathcond.=
6400: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
6401: }
6402: }
6403: $allpathcond=~s/\|$//;
6404: return &docondval($allpathcond);
6405: }
6406:
6407: #evaluates an expression of conditions
6408: sub docondval {
6409: my ($allpathcond) = @_;
6410: my $result=0;
6411: if ($env{'request.course.id'}
6412: && defined($allpathcond)) {
6413: my $operand='|';
6414: my @stack;
6415: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
6416: if ($chunk eq '(') {
6417: push @stack,($operand,$result);
6418: } elsif ($chunk eq ')') {
6419: my $before=pop @stack;
6420: if (pop @stack eq '&') {
6421: $result=$result>$before?$before:$result;
6422: } else {
6423: $result=$result>$before?$result:$before;
6424: }
6425: } elsif (($chunk eq '&') || ($chunk eq '|')) {
6426: $operand=$chunk;
6427: } else {
6428: my $new=directcondval($chunk);
6429: if ($operand eq '&') {
6430: $result=$result>$new?$new:$result;
6431: } else {
6432: $result=$result>$new?$result:$new;
6433: }
6434: }
6435: }
6436: }
6437: return $result;
6438: }
6439:
6440: # ---------------------------------------------------- Devalidate courseresdata
6441:
6442: sub devalidatecourseresdata {
6443: my ($coursenum,$coursedomain)=@_;
6444: my $hashid=$coursenum.':'.$coursedomain;
6445: &devalidate_cache_new('courseres',$hashid);
6446: }
6447:
6448:
6449: # --------------------------------------------------- Course Resourcedata Query
6450: #
6451: # Parameters:
6452: # $coursenum - Number of the course.
6453: # $coursedomain - Domain at which the course was created.
6454: # Returns:
6455: # A hash of the course parameters along (I think) with timestamps
6456: # and version info.
6457:
6458: sub get_courseresdata {
6459: my ($coursenum,$coursedomain)=@_;
6460: my $coursehom=&homeserver($coursenum,$coursedomain);
6461: my $hashid=$coursenum.':'.$coursedomain;
6462: my ($result,$cached)=&is_cached_new('courseres',$hashid);
6463: my %dumpreply;
6464: unless (defined($cached)) {
6465: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
6466: $result=\%dumpreply;
6467: my ($tmp) = keys(%dumpreply);
6468: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
6469: &do_cache_new('courseres',$hashid,$result,600);
6470: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
6471: return $tmp;
6472: } elsif ($tmp =~ /^(error)/) {
6473: $result=undef;
6474: &do_cache_new('courseres',$hashid,$result,600);
6475: }
6476: }
6477: return $result;
6478: }
6479:
6480: sub devalidateuserresdata {
6481: my ($uname,$udom)=@_;
6482: my $hashid="$udom:$uname";
6483: &devalidate_cache_new('userres',$hashid);
6484: }
6485:
6486: sub get_userresdata {
6487: my ($uname,$udom)=@_;
6488: #most student don\'t have any data set, check if there is some data
6489: if (&EXT_cache_status($udom,$uname)) { return undef; }
6490:
6491: my $hashid="$udom:$uname";
6492: my ($result,$cached)=&is_cached_new('userres',$hashid);
6493: if (!defined($cached)) {
6494: my %resourcedata=&dump('resourcedata',$udom,$uname);
6495: $result=\%resourcedata;
6496: &do_cache_new('userres',$hashid,$result,600);
6497: }
6498: my ($tmp)=keys(%$result);
6499: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
6500: return $result;
6501: }
6502: #error 2 occurs when the .db doesn't exist
6503: if ($tmp!~/error: 2 /) {
6504: &logthis("<font color=\"blue\">WARNING:".
6505: " Trying to get resource data for ".
6506: $uname." at ".$udom.": ".
6507: $tmp."</font>");
6508: } elsif ($tmp=~/error: 2 /) {
6509: #&EXT_cache_set($udom,$uname);
6510: &do_cache_new('userres',$hashid,undef,600);
6511: undef($tmp); # not really an error so don't send it back
6512: }
6513: return $tmp;
6514: }
6515: #----------------------------------------------- resdata - return resource data
6516: # Purpose:
6517: # Return resource data for either users or for a course.
6518: # Parameters:
6519: # $name - Course/user name.
6520: # $domain - Name of the domain the user/course is registered on.
6521: # $type - Type of thing $name is (must be 'course' or 'user'
6522: # @which - Array of names of resources desired.
6523: # Returns:
6524: # The value of the first reasource in @which that is found in the
6525: # resource hash.
6526: # Exceptional Conditions:
6527: # If the $type passed in is not valid (not the string 'course' or
6528: # 'user', an undefined reference is returned.
6529: # If none of the resources are found, an undef is returned
6530: sub resdata {
6531: my ($name,$domain,$type,@which)=@_;
6532: my $result;
6533: if ($type eq 'course') {
6534: $result=&get_courseresdata($name,$domain);
6535: } elsif ($type eq 'user') {
6536: $result=&get_userresdata($name,$domain);
6537: }
6538: if (!ref($result)) { return $result; }
6539: foreach my $item (@which) {
6540: if (defined($result->{$item->[0]})) {
6541: return [$result->{$item->[0]},$item->[1]];
6542: }
6543: }
6544: return undef;
6545: }
6546:
6547: #
6548: # EXT resource caching routines
6549: #
6550:
6551: sub clear_EXT_cache_status {
6552: &delenv('cache.EXT.');
6553: }
6554:
6555: sub EXT_cache_status {
6556: my ($target_domain,$target_user) = @_;
6557: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
6558: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
6559: # We know already the user has no data
6560: return 1;
6561: } else {
6562: return 0;
6563: }
6564: }
6565:
6566: sub EXT_cache_set {
6567: my ($target_domain,$target_user) = @_;
6568: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
6569: #&appenv({$cachename => time});
6570: }
6571:
6572: # --------------------------------------------------------- Value of a Variable
6573: sub EXT {
6574:
6575: my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
6576: unless ($varname) { return ''; }
6577: #get real user name/domain, courseid and symb
6578: my $courseid;
6579: my $publicuser;
6580: if ($symbparm) {
6581: $symbparm=&get_symb_from_alias($symbparm);
6582: }
6583: if (!($uname && $udom)) {
6584: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
6585: if (!$symbparm) { $symbparm=$cursymb; }
6586: } else {
6587: $courseid=$env{'request.course.id'};
6588: }
6589: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
6590: my $rest;
6591: if (defined($therest[0])) {
6592: $rest=join('.',@therest);
6593: } else {
6594: $rest='';
6595: }
6596:
6597: my $qualifierrest=$qualifier;
6598: if ($rest) { $qualifierrest.='.'.$rest; }
6599: my $spacequalifierrest=$space;
6600: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
6601: if ($realm eq 'user') {
6602: # --------------------------------------------------------------- user.resource
6603: if ($space eq 'resource') {
6604: if ( (defined($Apache::lonhomework::parsing_a_problem)
6605: || defined($Apache::lonhomework::parsing_a_task))
6606: &&
6607: ($symbparm eq &symbread()) ) {
6608: # if we are in the middle of processing the resource the
6609: # get the value we are planning on committing
6610: if (defined($Apache::lonhomework::results{$qualifierrest})) {
6611: return $Apache::lonhomework::results{$qualifierrest};
6612: } else {
6613: return $Apache::lonhomework::history{$qualifierrest};
6614: }
6615: } else {
6616: my %restored;
6617: if ($publicuser || $env{'request.state'} eq 'construct') {
6618: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
6619: } else {
6620: %restored=&restore($symbparm,$courseid,$udom,$uname);
6621: }
6622: return $restored{$qualifierrest};
6623: }
6624: # ----------------------------------------------------------------- user.access
6625: } elsif ($space eq 'access') {
6626: # FIXME - not supporting calls for a specific user
6627: return &allowed($qualifier,$rest);
6628: # ------------------------------------------ user.preferences, user.environment
6629: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
6630: if (($uname eq $env{'user.name'}) &&
6631: ($udom eq $env{'user.domain'})) {
6632: return $env{join('.',('environment',$qualifierrest))};
6633: } else {
6634: my %returnhash;
6635: if (!$publicuser) {
6636: %returnhash=&userenvironment($udom,$uname,
6637: $qualifierrest);
6638: }
6639: return $returnhash{$qualifierrest};
6640: }
6641: # ----------------------------------------------------------------- user.course
6642: } elsif ($space eq 'course') {
6643: # FIXME - not supporting calls for a specific user
6644: return $env{join('.',('request.course',$qualifier))};
6645: # ------------------------------------------------------------------- user.role
6646: } elsif ($space eq 'role') {
6647: # FIXME - not supporting calls for a specific user
6648: my ($role,$where)=split(/\./,$env{'request.role'});
6649: if ($qualifier eq 'value') {
6650: return $role;
6651: } elsif ($qualifier eq 'extent') {
6652: return $where;
6653: }
6654: # ----------------------------------------------------------------- user.domain
6655: } elsif ($space eq 'domain') {
6656: return $udom;
6657: # ------------------------------------------------------------------- user.name
6658: } elsif ($space eq 'name') {
6659: return $uname;
6660: # ---------------------------------------------------- Any other user namespace
6661: } else {
6662: my %reply;
6663: if (!$publicuser) {
6664: %reply=&get($space,[$qualifierrest],$udom,$uname);
6665: }
6666: return $reply{$qualifierrest};
6667: }
6668: } elsif ($realm eq 'query') {
6669: # ---------------------------------------------- pull stuff out of query string
6670: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
6671: [$spacequalifierrest]);
6672: return $env{'form.'.$spacequalifierrest};
6673: } elsif ($realm eq 'request') {
6674: # ------------------------------------------------------------- request.browser
6675: if ($space eq 'browser') {
6676: if ($qualifier eq 'textremote') {
6677: if (&Apache::lonlocal::mt('textual_remote_display') eq 'on') {
6678: return 1;
6679: } else {
6680: return 0;
6681: }
6682: } else {
6683: return $env{'browser.'.$qualifier};
6684: }
6685: # ------------------------------------------------------------ request.filename
6686: } else {
6687: return $env{'request.'.$spacequalifierrest};
6688: }
6689: } elsif ($realm eq 'course') {
6690: # ---------------------------------------------------------- course.description
6691: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
6692: } elsif ($realm eq 'resource') {
6693:
6694: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
6695: if (!$symbparm) { $symbparm=&symbread(); }
6696: }
6697:
6698: if ($space eq 'title') {
6699: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
6700: return &gettitle($symbparm);
6701: }
6702:
6703: if ($space eq 'map') {
6704: my ($map) = &decode_symb($symbparm);
6705: return &symbread($map);
6706: }
6707: if ($space eq 'filename') {
6708: if ($symbparm) {
6709: return &clutter((&decode_symb($symbparm))[2]);
6710: }
6711: return &hreflocation('',$env{'request.filename'});
6712: }
6713:
6714: my ($section, $group, @groups);
6715: my ($courselevelm,$courselevel);
6716: if ($symbparm && defined($courseid) &&
6717: $courseid eq $env{'request.course.id'}) {
6718:
6719: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
6720:
6721: # ----------------------------------------------------- Cascading lookup scheme
6722: my $symbp=$symbparm;
6723: my $mapp=&deversion((&decode_symb($symbp))[0]);
6724:
6725: my $symbparm=$symbp.'.'.$spacequalifierrest;
6726: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
6727:
6728: if (($env{'user.name'} eq $uname) &&
6729: ($env{'user.domain'} eq $udom)) {
6730: $section=$env{'request.course.sec'};
6731: @groups = split(/:/,$env{'request.course.groups'});
6732: @groups=&sort_course_groups($courseid,@groups);
6733: } else {
6734: if (! defined($usection)) {
6735: $section=&getsection($udom,$uname,$courseid);
6736: } else {
6737: $section = $usection;
6738: }
6739: @groups = &get_users_groups($udom,$uname,$courseid);
6740: }
6741:
6742: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
6743: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
6744: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
6745:
6746: $courselevel=$courseid.'.'.$spacequalifierrest;
6747: my $courselevelr=$courseid.'.'.$symbparm;
6748: $courselevelm=$courseid.'.'.$mapparm;
6749:
6750: # ----------------------------------------------------------- first, check user
6751:
6752: my $userreply=&resdata($uname,$udom,'user',
6753: ([$courselevelr,'resource'],
6754: [$courselevelm,'map' ],
6755: [$courselevel, 'course' ]));
6756: if (defined($userreply)) { return &get_reply($userreply); }
6757:
6758: # ------------------------------------------------ second, check some of course
6759: my $coursereply;
6760: if (@groups > 0) {
6761: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
6762: $mapparm,$spacequalifierrest);
6763: if (defined($coursereply)) { return &get_reply($coursereply); }
6764: }
6765:
6766: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
6767: $env{'course.'.$courseid.'.domain'},
6768: 'course',
6769: ([$seclevelr, 'resource'],
6770: [$seclevelm, 'map' ],
6771: [$seclevel, 'course' ],
6772: [$courselevelr,'resource']));
6773: if (defined($coursereply)) { return &get_reply($coursereply); }
6774:
6775: # ------------------------------------------------------ third, check map parms
6776: my %parmhash=();
6777: my $thisparm='';
6778: if (tie(%parmhash,'GDBM_File',
6779: $env{'request.course.fn'}.'_parms.db',
6780: &GDBM_READER(),0640)) {
6781: $thisparm=$parmhash{$symbparm};
6782: untie(%parmhash);
6783: }
6784: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
6785: }
6786: # ------------------------------------------ fourth, look in resource metadata
6787:
6788: $spacequalifierrest=~s/\./\_/;
6789: my $filename;
6790: if (!$symbparm) { $symbparm=&symbread(); }
6791: if ($symbparm) {
6792: $filename=(&decode_symb($symbparm))[2];
6793: } else {
6794: $filename=$env{'request.filename'};
6795: }
6796: my $metadata=&metadata($filename,$spacequalifierrest);
6797: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
6798: $metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
6799: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
6800:
6801: # ---------------------------------------------- fourth, look in rest of course
6802: if ($symbparm && defined($courseid) &&
6803: $courseid eq $env{'request.course.id'}) {
6804: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
6805: $env{'course.'.$courseid.'.domain'},
6806: 'course',
6807: ([$courselevelm,'map' ],
6808: [$courselevel, 'course']));
6809: if (defined($coursereply)) { return &get_reply($coursereply); }
6810: }
6811: # ------------------------------------------------------------------ Cascade up
6812: unless ($space eq '0') {
6813: my @parts=split(/_/,$space);
6814: my $id=pop(@parts);
6815: my $part=join('_',@parts);
6816: if ($part eq '') { $part='0'; }
6817: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
6818: $symbparm,$udom,$uname,$section,1);
6819: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
6820: }
6821: if ($recurse) { return undef; }
6822: my $pack_def=&packages_tab_default($filename,$varname);
6823: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
6824: # ---------------------------------------------------- Any other user namespace
6825: } elsif ($realm eq 'environment') {
6826: # ----------------------------------------------------------------- environment
6827: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
6828: return $env{'environment.'.$spacequalifierrest};
6829: } else {
6830: if ($uname eq 'anonymous' && $udom eq '') {
6831: return '';
6832: }
6833: my %returnhash=&userenvironment($udom,$uname,
6834: $spacequalifierrest);
6835: return $returnhash{$spacequalifierrest};
6836: }
6837: } elsif ($realm eq 'system') {
6838: # ----------------------------------------------------------------- system.time
6839: if ($space eq 'time') {
6840: return time;
6841: }
6842: } elsif ($realm eq 'server') {
6843: # ----------------------------------------------------------------- system.time
6844: if ($space eq 'name') {
6845: return $ENV{'SERVER_NAME'};
6846: }
6847: }
6848: return '';
6849: }
6850:
6851: sub get_reply {
6852: my ($reply_value) = @_;
6853: if (ref($reply_value) eq 'ARRAY') {
6854: if (wantarray) {
6855: return @$reply_value;
6856: }
6857: return $reply_value->[0];
6858: } else {
6859: return $reply_value;
6860: }
6861: }
6862:
6863: sub check_group_parms {
6864: my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
6865: my @groupitems = ();
6866: my $resultitem;
6867: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
6868: foreach my $group (@{$groups}) {
6869: foreach my $level (@levels) {
6870: my $item = $courseid.'.['.$group.'].'.$level->[0];
6871: push(@groupitems,[$item,$level->[1]]);
6872: }
6873: }
6874: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
6875: $env{'course.'.$courseid.'.domain'},
6876: 'course',@groupitems);
6877: return $coursereply;
6878: }
6879:
6880: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
6881: my ($courseid,@groups) = @_;
6882: @groups = sort(@groups);
6883: return @groups;
6884: }
6885:
6886: sub packages_tab_default {
6887: my ($uri,$varname)=@_;
6888: my (undef,$part,$name)=split(/\./,$varname);
6889:
6890: my (@extension,@specifics,$do_default);
6891: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
6892: my ($pack_type,$pack_part)=split(/_/,$package,2);
6893: if ($pack_type eq 'default') {
6894: $do_default=1;
6895: } elsif ($pack_type eq 'extension') {
6896: push(@extension,[$package,$pack_type,$pack_part]);
6897: } elsif ($pack_part eq $part || $pack_type eq 'part') {
6898: # only look at packages defaults for packages that this id is
6899: push(@specifics,[$package,$pack_type,$pack_part]);
6900: }
6901: }
6902: # first look for a package that matches the requested part id
6903: foreach my $package (@specifics) {
6904: my (undef,$pack_type,$pack_part)=@{$package};
6905: next if ($pack_part ne $part);
6906: if (defined($packagetab{"$pack_type&$name&default"})) {
6907: return $packagetab{"$pack_type&$name&default"};
6908: }
6909: }
6910: # look for any possible matching non extension_ package
6911: foreach my $package (@specifics) {
6912: my (undef,$pack_type,$pack_part)=@{$package};
6913: if (defined($packagetab{"$pack_type&$name&default"})) {
6914: return $packagetab{"$pack_type&$name&default"};
6915: }
6916: if ($pack_type eq 'part') { $pack_part='0'; }
6917: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
6918: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
6919: }
6920: }
6921: # look for any posible extension_ match
6922: foreach my $package (@extension) {
6923: my ($package,$pack_type)=@{$package};
6924: if (defined($packagetab{"$pack_type&$name&default"})) {
6925: return $packagetab{"$pack_type&$name&default"};
6926: }
6927: if (defined($packagetab{$package."&$name&default"})) {
6928: return $packagetab{$package."&$name&default"};
6929: }
6930: }
6931: # look for a global default setting
6932: if ($do_default && defined($packagetab{"default&$name&default"})) {
6933: return $packagetab{"default&$name&default"};
6934: }
6935: return undef;
6936: }
6937:
6938: sub add_prefix_and_part {
6939: my ($prefix,$part)=@_;
6940: my $keyroot;
6941: if (defined($prefix) && $prefix !~ /^__/) {
6942: # prefix that has a part already
6943: $keyroot=$prefix;
6944: } elsif (defined($prefix)) {
6945: # prefix that is missing a part
6946: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
6947: } else {
6948: # no prefix at all
6949: if (defined($part)) { $keyroot='_'.$part; }
6950: }
6951: return $keyroot;
6952: }
6953:
6954: # ---------------------------------------------------------------- Get metadata
6955:
6956: my %metaentry;
6957: sub metadata {
6958: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
6959: $uri=&declutter($uri);
6960: # if it is a non metadata possible uri return quickly
6961: if (($uri eq '') ||
6962: (($uri =~ m|^/*adm/|) &&
6963: ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
6964: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) ) {
6965: return undef;
6966: }
6967: if (($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/})
6968: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
6969: return undef;
6970: }
6971: my $filename=$uri;
6972: $uri=~s/\.meta$//;
6973: #
6974: # Is the metadata already cached?
6975: # Look at timestamp of caching
6976: # Everything is cached by the main uri, libraries are never directly cached
6977: #
6978: if (!defined($liburi)) {
6979: my ($result,$cached)=&is_cached_new('meta',$uri);
6980: if (defined($cached)) { return $result->{':'.$what}; }
6981: }
6982: {
6983: #
6984: # Is this a recursive call for a library?
6985: #
6986: # if (! exists($metacache{$uri})) {
6987: # $metacache{$uri}={};
6988: # }
6989: my $cachetime = 60*60;
6990: if ($liburi) {
6991: $liburi=&declutter($liburi);
6992: $filename=$liburi;
6993: } else {
6994: &devalidate_cache_new('meta',$uri);
6995: undef(%metaentry);
6996: }
6997: my %metathesekeys=();
6998: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
6999: my $metastring;
7000: if ($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/}) {
7001: my $which = &hreflocation('','/'.($liburi || $uri));
7002: $metastring =
7003: &Apache::lonnet::ssi_body($which,
7004: ('grade_target' => 'meta'));
7005: $cachetime = 1; # only want this cached in the child not long term
7006: } elsif ($uri !~ m -^(editupload)/-) {
7007: my $file=&filelocation('',&clutter($filename));
7008: #push(@{$metaentry{$uri.'.file'}},$file);
7009: $metastring=&getfile($file);
7010: }
7011: my $parser=HTML::LCParser->new(\$metastring);
7012: my $token;
7013: undef %metathesekeys;
7014: while ($token=$parser->get_token) {
7015: if ($token->[0] eq 'S') {
7016: if (defined($token->[2]->{'package'})) {
7017: #
7018: # This is a package - get package info
7019: #
7020: my $package=$token->[2]->{'package'};
7021: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
7022: if (defined($token->[2]->{'id'})) {
7023: $keyroot.='_'.$token->[2]->{'id'};
7024: }
7025: if ($metaentry{':packages'}) {
7026: $metaentry{':packages'}.=','.$package.$keyroot;
7027: } else {
7028: $metaentry{':packages'}=$package.$keyroot;
7029: }
7030: foreach my $pack_entry (keys(%packagetab)) {
7031: my $part=$keyroot;
7032: $part=~s/^\_//;
7033: if ($pack_entry=~/^\Q$package\E\&/ ||
7034: $pack_entry=~/^\Q$package\E_0\&/) {
7035: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
7036: # ignore package.tab specified default values
7037: # here &package_tab_default() will fetch those
7038: if ($subp eq 'default') { next; }
7039: my $value=$packagetab{$pack_entry};
7040: my $unikey;
7041: if ($pack =~ /_0$/) {
7042: $unikey='parameter_0_'.$name;
7043: $part=0;
7044: } else {
7045: $unikey='parameter'.$keyroot.'_'.$name;
7046: }
7047: if ($subp eq 'display') {
7048: $value.=' [Part: '.$part.']';
7049: }
7050: $metaentry{':'.$unikey.'.part'}=$part;
7051: $metathesekeys{$unikey}=1;
7052: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
7053: $metaentry{':'.$unikey.'.'.$subp}=$value;
7054: }
7055: if (defined($metaentry{':'.$unikey.'.default'})) {
7056: $metaentry{':'.$unikey}=
7057: $metaentry{':'.$unikey.'.default'};
7058: }
7059: }
7060: }
7061: } else {
7062: #
7063: # This is not a package - some other kind of start tag
7064: #
7065: my $entry=$token->[1];
7066: my $unikey;
7067: if ($entry eq 'import') {
7068: $unikey='';
7069: } else {
7070: $unikey=$entry;
7071: }
7072: $unikey.=&add_prefix_and_part($prefix,$token->[2]->{'part'});
7073:
7074: if (defined($token->[2]->{'id'})) {
7075: $unikey.='_'.$token->[2]->{'id'};
7076: }
7077:
7078: if ($entry eq 'import') {
7079: #
7080: # Importing a library here
7081: #
7082: if ($depthcount<20) {
7083: my $location=$parser->get_text('/import');
7084: my $dir=$filename;
7085: $dir=~s|[^/]*$||;
7086: $location=&filelocation($dir,$location);
7087: my $metadata =
7088: &metadata($uri,'keys', $location,$unikey,
7089: $depthcount+1);
7090: foreach my $meta (split(',',$metadata)) {
7091: $metaentry{':'.$meta}=$metaentry{':'.$meta};
7092: $metathesekeys{$meta}=1;
7093: }
7094: }
7095: } else {
7096:
7097: if (defined($token->[2]->{'name'})) {
7098: $unikey.='_'.$token->[2]->{'name'};
7099: }
7100: $metathesekeys{$unikey}=1;
7101: foreach my $param (@{$token->[3]}) {
7102: $metaentry{':'.$unikey.'.'.$param} =
7103: $token->[2]->{$param};
7104: }
7105: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
7106: my $default=$metaentry{':'.$unikey.'.default'};
7107: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
7108: # only ws inside the tag, and not in default, so use default
7109: # as value
7110: $metaentry{':'.$unikey}=$default;
7111: } elsif ( $internaltext =~ /\S/ ) {
7112: # something interesting inside the tag
7113: $metaentry{':'.$unikey}=$internaltext;
7114: } else {
7115: # no interesting values, don't set a default
7116: }
7117: # end of not-a-package not-a-library import
7118: }
7119: # end of not-a-package start tag
7120: }
7121: # the next is the end of "start tag"
7122: }
7123: }
7124: my ($extension) = ($uri =~ /\.(\w+)$/);
7125: $extension = lc($extension);
7126: if ($extension eq 'htm') { $extension='html'; }
7127:
7128: foreach my $key (keys(%packagetab)) {
7129: #no specific packages #how's our extension
7130: if ($key!~/^extension_\Q$extension\E&/) { next; }
7131: &metadata_create_package_def($uri,$key,'extension_'.$extension,
7132: \%metathesekeys);
7133: }
7134:
7135: if (!exists($metaentry{':packages'})
7136: || $packagetab{"import_defaults&extension_$extension"}) {
7137: foreach my $key (keys(%packagetab)) {
7138: #no specific packages well let's get default then
7139: if ($key!~/^default&/) { next; }
7140: &metadata_create_package_def($uri,$key,'default',
7141: \%metathesekeys);
7142: }
7143: }
7144: # are there custom rights to evaluate
7145: if ($metaentry{':copyright'} eq 'custom') {
7146:
7147: #
7148: # Importing a rights file here
7149: #
7150: unless ($depthcount) {
7151: my $location=$metaentry{':customdistributionfile'};
7152: my $dir=$filename;
7153: $dir=~s|[^/]*$||;
7154: $location=&filelocation($dir,$location);
7155: my $rights_metadata =
7156: &metadata($uri,'keys',$location,'_rights',
7157: $depthcount+1);
7158: foreach my $rights (split(',',$rights_metadata)) {
7159: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
7160: $metathesekeys{$rights}=1;
7161: }
7162: }
7163: }
7164: # uniqifiy package listing
7165: my %seen;
7166: my @uniq_packages =
7167: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
7168: $metaentry{':packages'} = join(',',@uniq_packages);
7169:
7170: $metaentry{':keys'} = join(',',keys(%metathesekeys));
7171: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
7172: $metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
7173: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
7174: # this is the end of "was not already recently cached
7175: }
7176: return $metaentry{':'.$what};
7177: }
7178:
7179: sub metadata_create_package_def {
7180: my ($uri,$key,$package,$metathesekeys)=@_;
7181: my ($pack,$name,$subp)=split(/\&/,$key);
7182: if ($subp eq 'default') { next; }
7183:
7184: if (defined($metaentry{':packages'})) {
7185: $metaentry{':packages'}.=','.$package;
7186: } else {
7187: $metaentry{':packages'}=$package;
7188: }
7189: my $value=$packagetab{$key};
7190: my $unikey;
7191: $unikey='parameter_0_'.$name;
7192: $metaentry{':'.$unikey.'.part'}=0;
7193: $$metathesekeys{$unikey}=1;
7194: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
7195: $metaentry{':'.$unikey.'.'.$subp}=$value;
7196: }
7197: if (defined($metaentry{':'.$unikey.'.default'})) {
7198: $metaentry{':'.$unikey}=
7199: $metaentry{':'.$unikey.'.default'};
7200: }
7201: }
7202:
7203: sub metadata_generate_part0 {
7204: my ($metadata,$metacache,$uri) = @_;
7205: my %allnames;
7206: foreach my $metakey (keys(%$metadata)) {
7207: if ($metakey=~/^parameter\_(.*)/) {
7208: my $part=$$metacache{':'.$metakey.'.part'};
7209: my $name=$$metacache{':'.$metakey.'.name'};
7210: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
7211: $allnames{$name}=$part;
7212: }
7213: }
7214: }
7215: foreach my $name (keys(%allnames)) {
7216: $$metadata{"parameter_0_$name"}=1;
7217: my $key=":parameter_0_$name";
7218: $$metacache{"$key.part"}='0';
7219: $$metacache{"$key.name"}=$name;
7220: $$metacache{"$key.type"}=$$metacache{':parameter_'.
7221: $allnames{$name}.'_'.$name.
7222: '.type'};
7223: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
7224: '.display'};
7225: my $expr='[Part: '.$allnames{$name}.']';
7226: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
7227: $$metacache{"$key.display"}=$olddis;
7228: }
7229: }
7230:
7231: # ------------------------------------------------------ Devalidate title cache
7232:
7233: sub devalidate_title_cache {
7234: my ($url)=@_;
7235: if (!$env{'request.course.id'}) { return; }
7236: my $symb=&symbread($url);
7237: if (!$symb) { return; }
7238: my $key=$env{'request.course.id'}."\0".$symb;
7239: &devalidate_cache_new('title',$key);
7240: }
7241:
7242: # ------------------------------------------------- Get the title of a resource
7243:
7244: sub gettitle {
7245: my $urlsymb=shift;
7246: my $symb=&symbread($urlsymb);
7247: if ($symb) {
7248: my $key=$env{'request.course.id'}."\0".$symb;
7249: my ($result,$cached)=&is_cached_new('title',$key);
7250: if (defined($cached)) {
7251: return $result;
7252: }
7253: my ($map,$resid,$url)=&decode_symb($symb);
7254: my $title='';
7255: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
7256: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
7257: } else {
7258: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7259: &GDBM_READER(),0640)) {
7260: my $mapid=$bighash{'map_pc_'.&clutter($map)};
7261: $title=$bighash{'title_'.$mapid.'.'.$resid};
7262: untie(%bighash);
7263: }
7264: }
7265: $title=~s/\&colon\;/\:/gs;
7266: if ($title) {
7267: return &do_cache_new('title',$key,$title,600);
7268: }
7269: $urlsymb=$url;
7270: }
7271: my $title=&metadata($urlsymb,'title');
7272: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
7273: return $title;
7274: }
7275:
7276: sub get_slot {
7277: my ($which,$cnum,$cdom)=@_;
7278: if (!$cnum || !$cdom) {
7279: (undef,my $courseid)=&whichuser();
7280: $cdom=$env{'course.'.$courseid.'.domain'};
7281: $cnum=$env{'course.'.$courseid.'.num'};
7282: }
7283: my $key=join("\0",'slots',$cdom,$cnum,$which);
7284: my %slotinfo;
7285: if (exists($remembered{$key})) {
7286: $slotinfo{$which} = $remembered{$key};
7287: } else {
7288: %slotinfo=&get('slots',[$which],$cdom,$cnum);
7289: &Apache::lonhomework::showhash(%slotinfo);
7290: my ($tmp)=keys(%slotinfo);
7291: if ($tmp=~/^error:/) { return (); }
7292: $remembered{$key} = $slotinfo{$which};
7293: }
7294: if (ref($slotinfo{$which}) eq 'HASH') {
7295: return %{$slotinfo{$which}};
7296: }
7297: return $slotinfo{$which};
7298: }
7299: # ------------------------------------------------- Update symbolic store links
7300:
7301: sub symblist {
7302: my ($mapname,%newhash)=@_;
7303: $mapname=&deversion(&declutter($mapname));
7304: my %hash;
7305: if (($env{'request.course.fn'}) && (%newhash)) {
7306: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
7307: &GDBM_WRCREAT(),0640)) {
7308: foreach my $url (keys %newhash) {
7309: next if ($url eq 'last_known'
7310: && $env{'form.no_update_last_known'});
7311: $hash{declutter($url)}=&encode_symb($mapname,
7312: $newhash{$url}->[1],
7313: $newhash{$url}->[0]);
7314: }
7315: if (untie(%hash)) {
7316: return 'ok';
7317: }
7318: }
7319: }
7320: return 'error';
7321: }
7322:
7323: # --------------------------------------------------------------- Verify a symb
7324:
7325: sub symbverify {
7326: my ($symb,$thisurl)=@_;
7327: my $thisfn=$thisurl;
7328: $thisfn=&declutter($thisfn);
7329: # direct jump to resource in page or to a sequence - will construct own symbs
7330: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
7331: # check URL part
7332: my ($map,$resid,$url)=&decode_symb($symb);
7333:
7334: unless ($url eq $thisfn) { return 0; }
7335:
7336: $symb=&symbclean($symb);
7337: $thisurl=&deversion($thisurl);
7338: $thisfn=&deversion($thisfn);
7339:
7340: my %bighash;
7341: my $okay=0;
7342:
7343: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7344: &GDBM_READER(),0640)) {
7345: my $ids=$bighash{'ids_'.&clutter($thisurl)};
7346: unless ($ids) {
7347: $ids=$bighash{'ids_/'.$thisurl};
7348: }
7349: if ($ids) {
7350: # ------------------------------------------------------------------- Has ID(s)
7351: foreach my $id (split(/\,/,$ids)) {
7352: my ($mapid,$resid)=split(/\./,$id);
7353: if (
7354: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
7355: eq $symb) {
7356: if (($env{'request.role.adv'}) ||
7357: $bighash{'encrypted_'.$id} eq $env{'request.enc'}) {
7358: $okay=1;
7359: }
7360: }
7361: }
7362: }
7363: untie(%bighash);
7364: }
7365: return $okay;
7366: }
7367:
7368: # --------------------------------------------------------------- Clean-up symb
7369:
7370: sub symbclean {
7371: my $symb=shift;
7372: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
7373: # remove version from map
7374: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
7375:
7376: # remove version from URL
7377: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
7378:
7379: # remove wrapper
7380:
7381: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
7382: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
7383: return $symb;
7384: }
7385:
7386: # ---------------------------------------------- Split symb to find map and url
7387:
7388: sub encode_symb {
7389: my ($map,$resid,$url)=@_;
7390: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
7391: }
7392:
7393: sub decode_symb {
7394: my $symb=shift;
7395: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
7396: my ($map,$resid,$url)=split(/___/,$symb);
7397: return (&fixversion($map),$resid,&fixversion($url));
7398: }
7399:
7400: sub fixversion {
7401: my $fn=shift;
7402: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
7403: my %bighash;
7404: my $uri=&clutter($fn);
7405: my $key=$env{'request.course.id'}.'_'.$uri;
7406: # is this cached?
7407: my ($result,$cached)=&is_cached_new('courseresversion',$key);
7408: if (defined($cached)) { return $result; }
7409: # unfortunately not cached, or expired
7410: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7411: &GDBM_READER(),0640)) {
7412: if ($bighash{'version_'.$uri}) {
7413: my $version=$bighash{'version_'.$uri};
7414: unless (($version eq 'mostrecent') ||
7415: ($version==&getversion($uri))) {
7416: $uri=~s/\.(\w+)$/\.$version\.$1/;
7417: }
7418: }
7419: untie %bighash;
7420: }
7421: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
7422: }
7423:
7424: sub deversion {
7425: my $url=shift;
7426: $url=~s/\.\d+\.(\w+)$/\.$1/;
7427: return $url;
7428: }
7429:
7430: # ------------------------------------------------------ Return symb list entry
7431:
7432: sub symbread {
7433: my ($thisfn,$donotrecurse)=@_;
7434: my $cache_str='request.symbread.cached.'.$thisfn;
7435: if (defined($env{$cache_str})) { return $env{$cache_str}; }
7436: # no filename provided? try from environment
7437: unless ($thisfn) {
7438: if ($env{'request.symb'}) {
7439: return $env{$cache_str}=&symbclean($env{'request.symb'});
7440: }
7441: $thisfn=$env{'request.filename'};
7442: }
7443: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
7444: # is that filename actually a symb? Verify, clean, and return
7445: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
7446: if (&symbverify($thisfn,$1)) {
7447: return $env{$cache_str}=&symbclean($thisfn);
7448: }
7449: }
7450: $thisfn=declutter($thisfn);
7451: my %hash;
7452: my %bighash;
7453: my $syval='';
7454: if (($env{'request.course.fn'}) && ($thisfn)) {
7455: my $targetfn = $thisfn;
7456: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
7457: $targetfn = 'adm/wrapper/'.$thisfn;
7458: }
7459: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
7460: $targetfn=$1;
7461: }
7462: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
7463: &GDBM_READER(),0640)) {
7464: $syval=$hash{$targetfn};
7465: untie(%hash);
7466: }
7467: # ---------------------------------------------------------- There was an entry
7468: if ($syval) {
7469: #unless ($syval=~/\_\d+$/) {
7470: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
7471: #&appenv({'request.ambiguous' => $thisfn});
7472: #return $env{$cache_str}='';
7473: #}
7474: #$syval.=$1;
7475: #}
7476: } else {
7477: # ------------------------------------------------------- Was not in symb table
7478: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7479: &GDBM_READER(),0640)) {
7480: # ---------------------------------------------- Get ID(s) for current resource
7481: my $ids=$bighash{'ids_'.&clutter($thisfn)};
7482: unless ($ids) {
7483: $ids=$bighash{'ids_/'.$thisfn};
7484: }
7485: unless ($ids) {
7486: # alias?
7487: $ids=$bighash{'mapalias_'.$thisfn};
7488: }
7489: if ($ids) {
7490: # ------------------------------------------------------------------- Has ID(s)
7491: my @possibilities=split(/\,/,$ids);
7492: if ($#possibilities==0) {
7493: # ----------------------------------------------- There is only one possibility
7494: my ($mapid,$resid)=split(/\./,$ids);
7495: $syval=&encode_symb($bighash{'map_id_'.$mapid},
7496: $resid,$thisfn);
7497: } elsif (!$donotrecurse) {
7498: # ------------------------------------------ There is more than one possibility
7499: my $realpossible=0;
7500: foreach my $id (@possibilities) {
7501: my $file=$bighash{'src_'.$id};
7502: if (&allowed('bre',$file)) {
7503: my ($mapid,$resid)=split(/\./,$id);
7504: if ($bighash{'map_type_'.$mapid} ne 'page') {
7505: $realpossible++;
7506: $syval=&encode_symb($bighash{'map_id_'.$mapid},
7507: $resid,$thisfn);
7508: }
7509: }
7510: }
7511: if ($realpossible!=1) { $syval=''; }
7512: } else {
7513: $syval='';
7514: }
7515: }
7516: untie(%bighash)
7517: }
7518: }
7519: if ($syval) {
7520: return $env{$cache_str}=$syval;
7521: }
7522: }
7523: &appenv({'request.ambiguous' => $thisfn});
7524: return $env{$cache_str}='';
7525: }
7526:
7527: # ---------------------------------------------------------- Return random seed
7528:
7529: sub numval {
7530: my $txt=shift;
7531: $txt=~tr/A-J/0-9/;
7532: $txt=~tr/a-j/0-9/;
7533: $txt=~tr/K-T/0-9/;
7534: $txt=~tr/k-t/0-9/;
7535: $txt=~tr/U-Z/0-5/;
7536: $txt=~tr/u-z/0-5/;
7537: $txt=~s/\D//g;
7538: if ($_64bit) { if ($txt > 2**32) { return -1; } }
7539: return int($txt);
7540: }
7541:
7542: sub numval2 {
7543: my $txt=shift;
7544: $txt=~tr/A-J/0-9/;
7545: $txt=~tr/a-j/0-9/;
7546: $txt=~tr/K-T/0-9/;
7547: $txt=~tr/k-t/0-9/;
7548: $txt=~tr/U-Z/0-5/;
7549: $txt=~tr/u-z/0-5/;
7550: $txt=~s/\D//g;
7551: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
7552: my $total;
7553: foreach my $val (@txts) { $total+=$val; }
7554: if ($_64bit) { if ($total > 2**32) { return -1; } }
7555: return int($total);
7556: }
7557:
7558: sub numval3 {
7559: use integer;
7560: my $txt=shift;
7561: $txt=~tr/A-J/0-9/;
7562: $txt=~tr/a-j/0-9/;
7563: $txt=~tr/K-T/0-9/;
7564: $txt=~tr/k-t/0-9/;
7565: $txt=~tr/U-Z/0-5/;
7566: $txt=~tr/u-z/0-5/;
7567: $txt=~s/\D//g;
7568: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
7569: my $total;
7570: foreach my $val (@txts) { $total+=$val; }
7571: if ($_64bit) { $total=(($total<<32)>>32); }
7572: return $total;
7573: }
7574:
7575: sub digest {
7576: my ($data)=@_;
7577: my $digest=&Digest::MD5::md5($data);
7578: my ($a,$b,$c,$d)=unpack("iiii",$digest);
7579: my ($e,$f);
7580: {
7581: use integer;
7582: $e=($a+$b);
7583: $f=($c+$d);
7584: if ($_64bit) {
7585: $e=(($e<<32)>>32);
7586: $f=(($f<<32)>>32);
7587: }
7588: }
7589: if (wantarray) {
7590: return ($e,$f);
7591: } else {
7592: my $g;
7593: {
7594: use integer;
7595: $g=($e+$f);
7596: if ($_64bit) {
7597: $g=(($g<<32)>>32);
7598: }
7599: }
7600: return $g;
7601: }
7602: }
7603:
7604: sub latest_rnd_algorithm_id {
7605: return '64bit5';
7606: }
7607:
7608: sub get_rand_alg {
7609: my ($courseid)=@_;
7610: if (!$courseid) { $courseid=(&whichuser())[1]; }
7611: if ($courseid) {
7612: return $env{"course.$courseid.rndseed"};
7613: }
7614: return &latest_rnd_algorithm_id();
7615: }
7616:
7617: sub validCODE {
7618: my ($CODE)=@_;
7619: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
7620: return 0;
7621: }
7622:
7623: sub getCODE {
7624: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
7625: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
7626: defined($Apache::lonhomework::parsing_a_task) ) &&
7627: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
7628: return $Apache::lonhomework::history{'resource.CODE'};
7629: }
7630: return undef;
7631: }
7632:
7633: sub rndseed {
7634: my ($symb,$courseid,$domain,$username)=@_;
7635: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
7636: if (!defined($symb)) {
7637: unless ($symb=$wsymb) { return time; }
7638: }
7639: if (!$courseid) { $courseid=$wcourseid; }
7640: if (!$domain) { $domain=$wdomain; }
7641: if (!$username) { $username=$wusername }
7642: my $which=&get_rand_alg();
7643:
7644: if (defined(&getCODE())) {
7645: if ($which eq '64bit5') {
7646: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
7647: } elsif ($which eq '64bit4') {
7648: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
7649: } else {
7650: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
7651: }
7652: } elsif ($which eq '64bit5') {
7653: return &rndseed_64bit5($symb,$courseid,$domain,$username);
7654: } elsif ($which eq '64bit4') {
7655: return &rndseed_64bit4($symb,$courseid,$domain,$username);
7656: } elsif ($which eq '64bit3') {
7657: return &rndseed_64bit3($symb,$courseid,$domain,$username);
7658: } elsif ($which eq '64bit2') {
7659: return &rndseed_64bit2($symb,$courseid,$domain,$username);
7660: } elsif ($which eq '64bit') {
7661: return &rndseed_64bit($symb,$courseid,$domain,$username);
7662: }
7663: return &rndseed_32bit($symb,$courseid,$domain,$username);
7664: }
7665:
7666: sub rndseed_32bit {
7667: my ($symb,$courseid,$domain,$username)=@_;
7668: {
7669: use integer;
7670: my $symbchck=unpack("%32C*",$symb) << 27;
7671: my $symbseed=numval($symb) << 22;
7672: my $namechck=unpack("%32C*",$username) << 17;
7673: my $nameseed=numval($username) << 12;
7674: my $domainseed=unpack("%32C*",$domain) << 7;
7675: my $courseseed=unpack("%32C*",$courseid);
7676: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
7677: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7678: #&logthis("rndseed :$num:$symb");
7679: if ($_64bit) { $num=(($num<<32)>>32); }
7680: return $num;
7681: }
7682: }
7683:
7684: sub rndseed_64bit {
7685: my ($symb,$courseid,$domain,$username)=@_;
7686: {
7687: use integer;
7688: my $symbchck=unpack("%32S*",$symb) << 21;
7689: my $symbseed=numval($symb) << 10;
7690: my $namechck=unpack("%32S*",$username);
7691:
7692: my $nameseed=numval($username) << 21;
7693: my $domainseed=unpack("%32S*",$domain) << 10;
7694: my $courseseed=unpack("%32S*",$courseid);
7695:
7696: my $num1=$symbchck+$symbseed+$namechck;
7697: my $num2=$nameseed+$domainseed+$courseseed;
7698: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7699: #&logthis("rndseed :$num:$symb");
7700: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7701: return "$num1,$num2";
7702: }
7703: }
7704:
7705: sub rndseed_64bit2 {
7706: my ($symb,$courseid,$domain,$username)=@_;
7707: {
7708: use integer;
7709: # strings need to be an even # of cahracters long, it it is odd the
7710: # last characters gets thrown away
7711: my $symbchck=unpack("%32S*",$symb.' ') << 21;
7712: my $symbseed=numval($symb) << 10;
7713: my $namechck=unpack("%32S*",$username.' ');
7714:
7715: my $nameseed=numval($username) << 21;
7716: my $domainseed=unpack("%32S*",$domain.' ') << 10;
7717: my $courseseed=unpack("%32S*",$courseid.' ');
7718:
7719: my $num1=$symbchck+$symbseed+$namechck;
7720: my $num2=$nameseed+$domainseed+$courseseed;
7721: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7722: #&logthis("rndseed :$num:$symb");
7723: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7724: return "$num1,$num2";
7725: }
7726: }
7727:
7728: sub rndseed_64bit3 {
7729: my ($symb,$courseid,$domain,$username)=@_;
7730: {
7731: use integer;
7732: # strings need to be an even # of cahracters long, it it is odd the
7733: # last characters gets thrown away
7734: my $symbchck=unpack("%32S*",$symb.' ') << 21;
7735: my $symbseed=numval2($symb) << 10;
7736: my $namechck=unpack("%32S*",$username.' ');
7737:
7738: my $nameseed=numval2($username) << 21;
7739: my $domainseed=unpack("%32S*",$domain.' ') << 10;
7740: my $courseseed=unpack("%32S*",$courseid.' ');
7741:
7742: my $num1=$symbchck+$symbseed+$namechck;
7743: my $num2=$nameseed+$domainseed+$courseseed;
7744: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7745: #&logthis("rndseed :$num1:$num2:$_64bit");
7746: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7747:
7748: return "$num1:$num2";
7749: }
7750: }
7751:
7752: sub rndseed_64bit4 {
7753: my ($symb,$courseid,$domain,$username)=@_;
7754: {
7755: use integer;
7756: # strings need to be an even # of cahracters long, it it is odd the
7757: # last characters gets thrown away
7758: my $symbchck=unpack("%32S*",$symb.' ') << 21;
7759: my $symbseed=numval3($symb) << 10;
7760: my $namechck=unpack("%32S*",$username.' ');
7761:
7762: my $nameseed=numval3($username) << 21;
7763: my $domainseed=unpack("%32S*",$domain.' ') << 10;
7764: my $courseseed=unpack("%32S*",$courseid.' ');
7765:
7766: my $num1=$symbchck+$symbseed+$namechck;
7767: my $num2=$nameseed+$domainseed+$courseseed;
7768: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
7769: #&logthis("rndseed :$num1:$num2:$_64bit");
7770: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
7771:
7772: return "$num1:$num2";
7773: }
7774: }
7775:
7776: sub rndseed_64bit5 {
7777: my ($symb,$courseid,$domain,$username)=@_;
7778: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
7779: return "$num1:$num2";
7780: }
7781:
7782: sub rndseed_CODE_64bit {
7783: my ($symb,$courseid,$domain,$username)=@_;
7784: {
7785: use integer;
7786: my $symbchck=unpack("%32S*",$symb.' ') << 16;
7787: my $symbseed=numval2($symb);
7788: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
7789: my $CODEseed=numval(&getCODE());
7790: my $courseseed=unpack("%32S*",$courseid.' ');
7791: my $num1=$symbseed+$CODEchck;
7792: my $num2=$CODEseed+$courseseed+$symbchck;
7793: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
7794: #&logthis("rndseed :$num1:$num2:$symb");
7795: if ($_64bit) { $num1=(($num1<<32)>>32); }
7796: if ($_64bit) { $num2=(($num2<<32)>>32); }
7797: return "$num1:$num2";
7798: }
7799: }
7800:
7801: sub rndseed_CODE_64bit4 {
7802: my ($symb,$courseid,$domain,$username)=@_;
7803: {
7804: use integer;
7805: my $symbchck=unpack("%32S*",$symb.' ') << 16;
7806: my $symbseed=numval3($symb);
7807: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
7808: my $CODEseed=numval3(&getCODE());
7809: my $courseseed=unpack("%32S*",$courseid.' ');
7810: my $num1=$symbseed+$CODEchck;
7811: my $num2=$CODEseed+$courseseed+$symbchck;
7812: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
7813: #&logthis("rndseed :$num1:$num2:$symb");
7814: if ($_64bit) { $num1=(($num1<<32)>>32); }
7815: if ($_64bit) { $num2=(($num2<<32)>>32); }
7816: return "$num1:$num2";
7817: }
7818: }
7819:
7820: sub rndseed_CODE_64bit5 {
7821: my ($symb,$courseid,$domain,$username)=@_;
7822: my $code = &getCODE();
7823: my ($num1,$num2)=&digest("$symb,$courseid,$code");
7824: return "$num1:$num2";
7825: }
7826:
7827: sub setup_random_from_rndseed {
7828: my ($rndseed)=@_;
7829: if ($rndseed =~/([,:])/) {
7830: my ($num1,$num2)=split(/[,:]/,$rndseed);
7831: &Math::Random::random_set_seed(abs($num1),abs($num2));
7832: } else {
7833: &Math::Random::random_set_seed_from_phrase($rndseed);
7834: }
7835: }
7836:
7837: sub latest_receipt_algorithm_id {
7838: return 'receipt3';
7839: }
7840:
7841: sub recunique {
7842: my $fucourseid=shift;
7843: my $unique;
7844: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
7845: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
7846: $unique=$env{"course.$fucourseid.internal.encseed"};
7847: } else {
7848: $unique=$perlvar{'lonReceipt'};
7849: }
7850: return unpack("%32C*",$unique);
7851: }
7852:
7853: sub recprefix {
7854: my $fucourseid=shift;
7855: my $prefix;
7856: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
7857: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
7858: $prefix=$env{"course.$fucourseid.internal.encpref"};
7859: } else {
7860: $prefix=$perlvar{'lonHostID'};
7861: }
7862: return unpack("%32C*",$prefix);
7863: }
7864:
7865: sub ireceipt {
7866: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
7867:
7868: my $return =&recprefix($fucourseid).'-';
7869:
7870: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
7871: $env{'request.state'} eq 'construct') {
7872: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
7873: return $return;
7874: }
7875:
7876: my $cuname=unpack("%32C*",$funame);
7877: my $cudom=unpack("%32C*",$fudom);
7878: my $cucourseid=unpack("%32C*",$fucourseid);
7879: my $cusymb=unpack("%32C*",$fusymb);
7880: my $cunique=&recunique($fucourseid);
7881: my $cpart=unpack("%32S*",$part);
7882: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
7883:
7884: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
7885:
7886: $return.= ($cunique%$cuname+
7887: $cunique%$cudom+
7888: $cusymb%$cuname+
7889: $cusymb%$cudom+
7890: $cucourseid%$cuname+
7891: $cucourseid%$cudom+
7892: $cpart%$cuname+
7893: $cpart%$cudom);
7894: } else {
7895: $return.= ($cunique%$cuname+
7896: $cunique%$cudom+
7897: $cusymb%$cuname+
7898: $cusymb%$cudom+
7899: $cucourseid%$cuname+
7900: $cucourseid%$cudom);
7901: }
7902: return $return;
7903: }
7904:
7905: sub receipt {
7906: my ($part)=@_;
7907: my ($symb,$courseid,$domain,$name) = &whichuser();
7908: return &ireceipt($name,$domain,$courseid,$symb,$part);
7909: }
7910:
7911: sub whichuser {
7912: my ($passedsymb)=@_;
7913: my ($symb,$courseid,$domain,$name,$publicuser);
7914: if (defined($env{'form.grade_symb'})) {
7915: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
7916: my $allowed=&allowed('vgr',$tmp_courseid);
7917: if (!$allowed &&
7918: exists($env{'request.course.sec'}) &&
7919: $env{'request.course.sec'} !~ /^\s*$/) {
7920: $allowed=&allowed('vgr',$tmp_courseid.
7921: '/'.$env{'request.course.sec'});
7922: }
7923: if ($allowed) {
7924: ($symb)=&get_env_multiple('form.grade_symb');
7925: $courseid=$tmp_courseid;
7926: ($domain)=&get_env_multiple('form.grade_domain');
7927: ($name)=&get_env_multiple('form.grade_username');
7928: return ($symb,$courseid,$domain,$name,$publicuser);
7929: }
7930: }
7931: if (!$passedsymb) {
7932: $symb=&symbread();
7933: } else {
7934: $symb=$passedsymb;
7935: }
7936: $courseid=$env{'request.course.id'};
7937: $domain=$env{'user.domain'};
7938: $name=$env{'user.name'};
7939: if ($name eq 'public' && $domain eq 'public') {
7940: if (!defined($env{'form.username'})) {
7941: $env{'form.username'}.=time.rand(10000000);
7942: }
7943: $name.=$env{'form.username'};
7944: }
7945: return ($symb,$courseid,$domain,$name,$publicuser);
7946:
7947: }
7948:
7949: # ------------------------------------------------------------ Serves up a file
7950: # returns either the contents of the file or
7951: # -1 if the file doesn't exist
7952: #
7953: # if the target is a file that was uploaded via DOCS,
7954: # a check will be made to see if a current copy exists on the local server,
7955: # if it does this will be served, otherwise a copy will be retrieved from
7956: # the home server for the course and stored in /home/httpd/html/userfiles on
7957: # the local server.
7958:
7959: sub getfile {
7960: my ($file) = @_;
7961: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
7962: &repcopy($file);
7963: return &readfile($file);
7964: }
7965:
7966: sub repcopy_userfile {
7967: my ($file)=@_;
7968: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
7969: if ($file =~ m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
7970: my ($cdom,$cnum,$filename) =
7971: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
7972: my $uri="/uploaded/$cdom/$cnum/$filename";
7973: if (-e "$file") {
7974: # we already have a local copy, check it out
7975: my @fileinfo = stat($file);
7976: my $rtncode;
7977: my $info;
7978: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
7979: if ($lwpresp ne 'ok') {
7980: # there is no such file anymore, even though we had a local copy
7981: if ($rtncode eq '404') {
7982: unlink($file);
7983: }
7984: return -1;
7985: }
7986: if ($info < $fileinfo[9]) {
7987: # nice, the file we have is up-to-date, just say okay
7988: return 'ok';
7989: } else {
7990: # the file is outdated, get rid of it
7991: unlink($file);
7992: }
7993: }
7994: # one way or the other, at this point, we don't have the file
7995: # construct the correct path for the file
7996: my @parts = ($cdom,$cnum);
7997: if ($filename =~ m|^(.+)/[^/]+$|) {
7998: push @parts, split(/\//,$1);
7999: }
8000: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
8001: foreach my $part (@parts) {
8002: $path .= '/'.$part;
8003: if (!-e $path) {
8004: mkdir($path,0770);
8005: }
8006: }
8007: # now the path exists for sure
8008: # get a user agent
8009: my $ua=new LWP::UserAgent;
8010: my $transferfile=$file.'.in.transfer';
8011: # FIXME: this should flock
8012: if (-e $transferfile) { return 'ok'; }
8013: my $request;
8014: $uri=~s/^\///;
8015: $request=new HTTP::Request('GET','http://'.&hostname(&homeserver($cnum,$cdom)).'/raw/'.$uri);
8016: my $response=$ua->request($request,$transferfile);
8017: # did it work?
8018: if ($response->is_error()) {
8019: unlink($transferfile);
8020: &logthis("Userfile repcopy failed for $uri");
8021: return -1;
8022: }
8023: # worked, rename the transfer file
8024: rename($transferfile,$file);
8025: return 'ok';
8026: }
8027:
8028: sub tokenwrapper {
8029: my $uri=shift;
8030: $uri=~s|^http\://([^/]+)||;
8031: $uri=~s|^/||;
8032: $env{'user.environment'}=~/\/([^\/]+)\.id/;
8033: my $token=$1;
8034: my (undef,$udom,$uname,$file)=split('/',$uri,4);
8035: if ($udom && $uname && $file) {
8036: $file=~s|(\?\.*)*$||;
8037: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
8038: return 'http://'.&hostname(&homeserver($uname,$udom)).'/'.$uri.
8039: (($uri=~/\?/)?'&':'?').'token='.$token.
8040: '&tokenissued='.$perlvar{'lonHostID'};
8041: } else {
8042: return '/adm/notfound.html';
8043: }
8044: }
8045:
8046: # call with reqtype HEAD: get last modification time
8047: # call with reqtype GET: get the file contents
8048: # Do not call this with reqtype GET for large files! It loads everything into memory
8049: #
8050: sub getuploaded {
8051: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
8052: $uri=~s/^\///;
8053: $uri = 'http://'.&hostname(&homeserver($cnum,$cdom)).'/raw/'.$uri;
8054: my $ua=new LWP::UserAgent;
8055: my $request=new HTTP::Request($reqtype,$uri);
8056: my $response=$ua->request($request);
8057: $$rtncode = $response->code;
8058: if (! $response->is_success()) {
8059: return 'failed';
8060: }
8061: if ($reqtype eq 'HEAD') {
8062: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
8063: } elsif ($reqtype eq 'GET') {
8064: $$info = $response->content;
8065: }
8066: return 'ok';
8067: }
8068:
8069: sub readfile {
8070: my $file = shift;
8071: if ( (! -e $file ) || ($file eq '') ) { return -1; };
8072: my $fh;
8073: open($fh,"<$file");
8074: my $a='';
8075: while (my $line = <$fh>) { $a .= $line; }
8076: return $a;
8077: }
8078:
8079: sub filelocation {
8080: my ($dir,$file) = @_;
8081: my $location;
8082: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
8083:
8084: if ($file =~ m-^/adm/-) {
8085: $file=~s-^/adm/wrapper/-/-;
8086: $file=~s-^/adm/coursedocs/showdoc/-/-;
8087: }
8088:
8089: if ($file=~m:^/~:) { # is a contruction space reference
8090: $location = $file;
8091: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
8092: } elsif ($file=~m{^/home/$match_username/public_html/}) {
8093: # is a correct contruction space reference
8094: $location = $file;
8095: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
8096: my ($udom,$uname,$filename)=
8097: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
8098: my $home=&homeserver($uname,$udom);
8099: my $is_me=0;
8100: my @ids=¤t_machine_ids();
8101: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
8102: if ($is_me) {
8103: $location=&propath($udom,$uname).
8104: '/userfiles/'.$filename;
8105: } else {
8106: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
8107: $udom.'/'.$uname.'/'.$filename;
8108: }
8109: } elsif ($file =~ m-^/adm/-) {
8110: $location = $perlvar{'lonDocRoot'}.'/'.$file;
8111: } else {
8112: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
8113: $file=~s:^/res/:/:;
8114: if ( !( $file =~ m:^/:) ) {
8115: $location = $dir. '/'.$file;
8116: } else {
8117: $location = '/home/httpd/html/res'.$file;
8118: }
8119: }
8120: $location=~s://+:/:g; # remove duplicate /
8121: while ($location=~m{/\.\./}) {
8122: if ($location =~ m{/[^/]+/\.\./}) {
8123: $location=~ s{/[^/]+/\.\./}{/}g;
8124: } else {
8125: $location=~ s{/\.\./}{/}g;
8126: }
8127: } #remove dir/..
8128: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
8129: return $location;
8130: }
8131:
8132: sub hreflocation {
8133: my ($dir,$file)=@_;
8134: unless (($file=~m-^http://-i) || ($file=~m-^/-)) {
8135: $file=filelocation($dir,$file);
8136: } elsif ($file=~m-^/adm/-) {
8137: $file=~s-^/adm/wrapper/-/-;
8138: $file=~s-^/adm/coursedocs/showdoc/-/-;
8139: }
8140: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
8141: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
8142: } elsif ($file=~m-/home/($match_username)/public_html/-) {
8143: $file=~s-^/home/($match_username)/public_html/-/~$1/-;
8144: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
8145: $file=~s-^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/
8146: -/uploaded/$1/$2/-x;
8147: }
8148: if ($file=~ m{^/userfiles/}) {
8149: $file =~ s{^/userfiles/}{/uploaded/};
8150: }
8151: return $file;
8152: }
8153:
8154: sub current_machine_domains {
8155: return &machine_domains(&hostname($perlvar{'lonHostID'}));
8156: }
8157:
8158: sub machine_domains {
8159: my ($hostname) = @_;
8160: my @domains;
8161: my %hostname = &all_hostnames();
8162: while( my($id, $name) = each(%hostname)) {
8163: # &logthis("-$id-$name-$hostname-");
8164: if ($hostname eq $name) {
8165: push(@domains,&host_domain($id));
8166: }
8167: }
8168: return @domains;
8169: }
8170:
8171: sub current_machine_ids {
8172: return &machine_ids(&hostname($perlvar{'lonHostID'}));
8173: }
8174:
8175: sub machine_ids {
8176: my ($hostname) = @_;
8177: $hostname ||= &hostname($perlvar{'lonHostID'});
8178: my @ids;
8179: my %name_to_host = &all_names();
8180: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
8181: return @{ $name_to_host{$hostname} };
8182: }
8183: return;
8184: }
8185:
8186: sub additional_machine_domains {
8187: my @domains;
8188: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
8189: while( my $line = <$fh>) {
8190: $line =~ s/\s//g;
8191: push(@domains,$line);
8192: }
8193: return @domains;
8194: }
8195:
8196: sub default_login_domain {
8197: my $domain = $perlvar{'lonDefDomain'};
8198: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
8199: foreach my $posdom (¤t_machine_domains(),
8200: &additional_machine_domains()) {
8201: if (lc($posdom) eq lc($testdomain)) {
8202: $domain=$posdom;
8203: last;
8204: }
8205: }
8206: return $domain;
8207: }
8208:
8209: # ------------------------------------------------------------- Declutters URLs
8210:
8211: sub declutter {
8212: my $thisfn=shift;
8213: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
8214: $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
8215: $thisfn=~s/^\///;
8216: $thisfn=~s|^adm/wrapper/||;
8217: $thisfn=~s|^adm/coursedocs/showdoc/||;
8218: $thisfn=~s/^res\///;
8219: $thisfn=~s/\?.+$//;
8220: return $thisfn;
8221: }
8222:
8223: # ------------------------------------------------------------- Clutter up URLs
8224:
8225: sub clutter {
8226: my $thisfn='/'.&declutter(shift);
8227: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
8228: || $thisfn =~ m{^/adm/(includes|pages)} ) {
8229: $thisfn='/res'.$thisfn;
8230: }
8231: if ($thisfn !~m|/adm|) {
8232: if ($thisfn =~ m|/ext/|) {
8233: $thisfn='/adm/wrapper'.$thisfn;
8234: } else {
8235: my ($ext) = ($thisfn =~ /\.(\w+)$/);
8236: my $embstyle=&Apache::loncommon::fileembstyle($ext);
8237: if ($embstyle eq 'ssi'
8238: || ($embstyle eq 'hdn')
8239: || ($embstyle eq 'rat')
8240: || ($embstyle eq 'prv')
8241: || ($embstyle eq 'ign')) {
8242: #do nothing with these
8243: } elsif (($embstyle eq 'img')
8244: || ($embstyle eq 'emb')
8245: || ($embstyle eq 'wrp')) {
8246: $thisfn='/adm/wrapper'.$thisfn;
8247: } elsif ($embstyle eq 'unk'
8248: && $thisfn!~/\.(sequence|page)$/) {
8249: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
8250: } else {
8251: # &logthis("Got a blank emb style");
8252: }
8253: }
8254: }
8255: return $thisfn;
8256: }
8257:
8258: sub clutter_with_no_wrapper {
8259: my $uri = &clutter(shift);
8260: if ($uri =~ m-^/adm/-) {
8261: $uri =~ s-^/adm/wrapper/-/-;
8262: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
8263: }
8264: return $uri;
8265: }
8266:
8267: sub freeze_escape {
8268: my ($value)=@_;
8269: if (ref($value)) {
8270: $value=&nfreeze($value);
8271: return '__FROZEN__'.&escape($value);
8272: }
8273: return &escape($value);
8274: }
8275:
8276:
8277: sub thaw_unescape {
8278: my ($value)=@_;
8279: if ($value =~ /^__FROZEN__/) {
8280: substr($value,0,10,undef);
8281: $value=&unescape($value);
8282: return &thaw($value);
8283: }
8284: return &unescape($value);
8285: }
8286:
8287: sub correct_line_ends {
8288: my ($result)=@_;
8289: $$result =~s/\r\n/\n/mg;
8290: $$result =~s/\r/\n/mg;
8291: }
8292: # ================================================================ Main Program
8293:
8294: sub goodbye {
8295: &logthis("Starting Shut down");
8296: #not converted to using infrastruture and probably shouldn't be
8297: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
8298: #converted
8299: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
8300: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
8301: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
8302: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
8303: #1.1 only
8304: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
8305: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
8306: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
8307: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
8308: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
8309: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
8310: &logthis(sprintf("%-20s is %s",'hits',$hits));
8311: &flushcourselogs();
8312: &logthis("Shutting down");
8313: }
8314:
8315: sub get_dns {
8316: my ($url,$func,$ignore_cache) = @_;
8317: if (!$ignore_cache) {
8318: my ($content,$cached)=
8319: &Apache::lonnet::is_cached_new('dns',$url);
8320: if ($cached) {
8321: &$func($content);
8322: return;
8323: }
8324: }
8325:
8326: my %alldns;
8327: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
8328: foreach my $dns (<$config>) {
8329: next if ($dns !~ /^\^(\S*)/x);
8330: $alldns{$1} = 1;
8331: }
8332: while (%alldns) {
8333: my ($dns) = keys(%alldns);
8334: delete($alldns{$dns});
8335: my $ua=new LWP::UserAgent;
8336: my $request=new HTTP::Request('GET',"http://$dns$url");
8337: my $response=$ua->request($request);
8338: next if ($response->is_error());
8339: my @content = split("\n",$response->content);
8340: &Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
8341: &$func(\@content);
8342: return;
8343: }
8344: close($config);
8345: my $which = (split('/',$url))[3];
8346: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
8347: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
8348: my @content = <$config>;
8349: &$func(\@content);
8350: return;
8351: }
8352: # ------------------------------------------------------------ Read domain file
8353: {
8354: my $loaded;
8355: my %domain;
8356:
8357: sub parse_domain_tab {
8358: my ($lines) = @_;
8359: foreach my $line (@$lines) {
8360: next if ($line =~ /^(\#|\s*$ )/x);
8361:
8362: chomp($line);
8363: my ($name,@elements) = split(/:/,$line,9);
8364: my %this_domain;
8365: foreach my $field ('description', 'auth_def', 'auth_arg_def',
8366: 'lang_def', 'city', 'longi', 'lati',
8367: 'primary') {
8368: $this_domain{$field} = shift(@elements);
8369: }
8370: $domain{$name} = \%this_domain;
8371: }
8372: }
8373:
8374: sub reset_domain_info {
8375: undef($loaded);
8376: undef(%domain);
8377: }
8378:
8379: sub load_domain_tab {
8380: my ($ignore_cache) = @_;
8381: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
8382: my $fh;
8383: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
8384: my @lines = <$fh>;
8385: &parse_domain_tab(\@lines);
8386: }
8387: close($fh);
8388: $loaded = 1;
8389: }
8390:
8391: sub domain {
8392: &load_domain_tab() if (!$loaded);
8393:
8394: my ($name,$what) = @_;
8395: return if ( !exists($domain{$name}) );
8396:
8397: if (!$what) {
8398: return $domain{$name}{'description'};
8399: }
8400: return $domain{$name}{$what};
8401: }
8402: }
8403:
8404:
8405: # ------------------------------------------------------------- Read hosts file
8406: {
8407: my %hostname;
8408: my %hostdom;
8409: my %libserv;
8410: my $loaded;
8411: my %name_to_host;
8412:
8413: sub parse_hosts_tab {
8414: my ($file) = @_;
8415: foreach my $configline (@$file) {
8416: next if ($configline =~ /^(\#|\s*$ )/x);
8417: next if ($configline =~ /^\^/);
8418: chomp($configline);
8419: my ($id,$domain,$role,$name)=split(/:/,$configline);
8420: $name=~s/\s//g;
8421: if ($id && $domain && $role && $name) {
8422: $hostname{$id}=$name;
8423: push(@{$name_to_host{$name}}, $id);
8424: $hostdom{$id}=$domain;
8425: if ($role eq 'library') { $libserv{$id}=$name; }
8426: }
8427: }
8428: }
8429:
8430: sub reset_hosts_info {
8431: &purge_remembered();
8432: &reset_domain_info();
8433: &reset_hosts_ip_info();
8434: undef(%name_to_host);
8435: undef(%hostname);
8436: undef(%hostdom);
8437: undef(%libserv);
8438: undef($loaded);
8439: }
8440:
8441: sub load_hosts_tab {
8442: my ($ignore_cache) = @_;
8443: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
8444: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
8445: my @config = <$config>;
8446: &parse_hosts_tab(\@config);
8447: close($config);
8448: $loaded=1;
8449: }
8450:
8451: sub hostname {
8452: &load_hosts_tab() if (!$loaded);
8453:
8454: my ($lonid) = @_;
8455: return $hostname{$lonid};
8456: }
8457:
8458: sub all_hostnames {
8459: &load_hosts_tab() if (!$loaded);
8460:
8461: return %hostname;
8462: }
8463:
8464: sub all_names {
8465: &load_hosts_tab() if (!$loaded);
8466:
8467: return %name_to_host;
8468: }
8469:
8470: sub is_library {
8471: &load_hosts_tab() if (!$loaded);
8472:
8473: return exists($libserv{$_[0]});
8474: }
8475:
8476: sub all_library {
8477: &load_hosts_tab() if (!$loaded);
8478:
8479: return %libserv;
8480: }
8481:
8482: sub get_servers {
8483: &load_hosts_tab() if (!$loaded);
8484:
8485: my ($domain,$type) = @_;
8486: my %possible_hosts = ($type eq 'library') ? %libserv
8487: : %hostname;
8488: my %result;
8489: if (ref($domain) eq 'ARRAY') {
8490: while ( my ($host,$hostname) = each(%possible_hosts)) {
8491: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
8492: $result{$host} = $hostname;
8493: }
8494: }
8495: } else {
8496: while ( my ($host,$hostname) = each(%possible_hosts)) {
8497: if ($hostdom{$host} eq $domain) {
8498: $result{$host} = $hostname;
8499: }
8500: }
8501: }
8502: return %result;
8503: }
8504:
8505: sub host_domain {
8506: &load_hosts_tab() if (!$loaded);
8507:
8508: my ($lonid) = @_;
8509: return $hostdom{$lonid};
8510: }
8511:
8512: sub all_domains {
8513: &load_hosts_tab() if (!$loaded);
8514:
8515: my %seen;
8516: my @uniq = grep(!$seen{$_}++, values(%hostdom));
8517: return @uniq;
8518: }
8519: }
8520:
8521: {
8522: my %iphost;
8523: my %name_to_ip;
8524: my %lonid_to_ip;
8525:
8526: sub get_hosts_from_ip {
8527: my ($ip) = @_;
8528: my %iphosts = &get_iphost();
8529: if (ref($iphosts{$ip})) {
8530: return @{$iphosts{$ip}};
8531: }
8532: return;
8533: }
8534:
8535: sub reset_hosts_ip_info {
8536: undef(%iphost);
8537: undef(%name_to_ip);
8538: undef(%lonid_to_ip);
8539: }
8540:
8541: sub get_host_ip {
8542: my ($lonid) = @_;
8543: if (exists($lonid_to_ip{$lonid})) {
8544: return $lonid_to_ip{$lonid};
8545: }
8546: my $name=&hostname($lonid);
8547: my $ip = gethostbyname($name);
8548: return if (!$ip || length($ip) ne 4);
8549: $ip=inet_ntoa($ip);
8550: $name_to_ip{$name} = $ip;
8551: $lonid_to_ip{$lonid} = $ip;
8552: return $ip;
8553: }
8554:
8555: sub get_iphost {
8556: my ($ignore_cache) = @_;
8557:
8558: if (!$ignore_cache) {
8559: if (%iphost) {
8560: return %iphost;
8561: }
8562: my ($ip_info,$cached)=
8563: &Apache::lonnet::is_cached_new('iphost','iphost');
8564: if ($cached) {
8565: %iphost = %{$ip_info->[0]};
8566: %name_to_ip = %{$ip_info->[1]};
8567: %lonid_to_ip = %{$ip_info->[2]};
8568: return %iphost;
8569: }
8570: }
8571:
8572: # get yesterday's info for fallback
8573: my %old_name_to_ip;
8574: my ($ip_info,$cached)=
8575: &Apache::lonnet::is_cached_new('iphost','iphost');
8576: if ($cached) {
8577: %old_name_to_ip = %{$ip_info->[1]};
8578: }
8579:
8580: my %name_to_host = &all_names();
8581: foreach my $name (keys(%name_to_host)) {
8582: my $ip;
8583: if (!exists($name_to_ip{$name})) {
8584: $ip = gethostbyname($name);
8585: if (!$ip || length($ip) ne 4) {
8586: if (defined($old_name_to_ip{$name})) {
8587: $ip = $old_name_to_ip{$name};
8588: &logthis("Can't find $name defaulting to old $ip");
8589: } else {
8590: &logthis("Name $name no IP found");
8591: next;
8592: }
8593: } else {
8594: $ip=inet_ntoa($ip);
8595: }
8596: $name_to_ip{$name} = $ip;
8597: } else {
8598: $ip = $name_to_ip{$name};
8599: }
8600: foreach my $id (@{ $name_to_host{$name} }) {
8601: $lonid_to_ip{$id} = $ip;
8602: }
8603: push(@{$iphost{$ip}},@{$name_to_host{$name}});
8604: }
8605: &Apache::lonnet::do_cache_new('iphost','iphost',
8606: [\%iphost,\%name_to_ip,\%lonid_to_ip],
8607: 48*60*60);
8608:
8609: return %iphost;
8610: }
8611: }
8612:
8613: BEGIN {
8614:
8615: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
8616: unless ($readit) {
8617: {
8618: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
8619: %perlvar = (%perlvar,%{$configvars});
8620: }
8621:
8622:
8623: # ------------------------------------------------------ Read spare server file
8624: {
8625: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
8626:
8627: while (my $configline=<$config>) {
8628: chomp($configline);
8629: if ($configline) {
8630: my ($host,$type) = split(':',$configline,2);
8631: if (!defined($type) || $type eq '') { $type = 'default' };
8632: push(@{ $spareid{$type} }, $host);
8633: }
8634: }
8635: close($config);
8636: }
8637: # ------------------------------------------------------------ Read permissions
8638: {
8639: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
8640:
8641: while (my $configline=<$config>) {
8642: chomp($configline);
8643: if ($configline) {
8644: my ($role,$perm)=split(/ /,$configline);
8645: if ($perm ne '') { $pr{$role}=$perm; }
8646: }
8647: }
8648: close($config);
8649: }
8650:
8651: # -------------------------------------------- Read plain texts for permissions
8652: {
8653: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
8654:
8655: while (my $configline=<$config>) {
8656: chomp($configline);
8657: if ($configline) {
8658: my ($short,@plain)=split(/:/,$configline);
8659: %{$prp{$short}} = ();
8660: if (@plain > 0) {
8661: $prp{$short}{'std'} = $plain[0];
8662: for (my $i=1; $i<@plain; $i++) {
8663: $prp{$short}{'alt'.$i} = $plain[$i];
8664: }
8665: }
8666: }
8667: }
8668: close($config);
8669: }
8670:
8671: # ---------------------------------------------------------- Read package table
8672: {
8673: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
8674:
8675: while (my $configline=<$config>) {
8676: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
8677: chomp($configline);
8678: my ($short,$plain)=split(/:/,$configline);
8679: my ($pack,$name)=split(/\&/,$short);
8680: if ($plain ne '') {
8681: $packagetab{$pack.'&'.$name.'&name'}=$name;
8682: $packagetab{$short}=$plain;
8683: }
8684: }
8685: close($config);
8686: }
8687:
8688: # ------------- set up temporary directory
8689: {
8690: $tmpdir = $perlvar{'lonDaemons'}.'/tmp/';
8691:
8692: }
8693:
8694: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
8695: 'compress_threshold'=> 20_000,
8696: });
8697:
8698: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
8699: $dumpcount=0;
8700:
8701: &logtouch();
8702: &logthis('<font color="yellow">INFO: Read configuration</font>');
8703: $readit=1;
8704: {
8705: use integer;
8706: my $test=(2**32)+1;
8707: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
8708: &logthis(" Detected 64bit platform ($_64bit)");
8709: }
8710: }
8711: }
8712:
8713: 1;
8714: __END__
8715:
8716: =pod
8717:
8718: =head1 NAME
8719:
8720: Apache::lonnet - Subroutines to ask questions about things in the network.
8721:
8722: =head1 SYNOPSIS
8723:
8724: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
8725:
8726: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
8727:
8728: Common parameters:
8729:
8730: =over 4
8731:
8732: =item *
8733:
8734: $uname : an internal username (if $cname expecting a course Id specifically)
8735:
8736: =item *
8737:
8738: $udom : a domain (if $cdom expecting a course's domain specifically)
8739:
8740: =item *
8741:
8742: $symb : a resource instance identifier
8743:
8744: =item *
8745:
8746: $namespace : the name of a .db file that contains the data needed or
8747: being set.
8748:
8749: =back
8750:
8751: =head1 OVERVIEW
8752:
8753: lonnet provides subroutines which interact with the
8754: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
8755: about classes, users, and resources.
8756:
8757: For many of these objects you can also use this to store data about
8758: them or modify them in various ways.
8759:
8760: =head2 Symbs
8761:
8762: To identify a specific instance of a resource, LON-CAPA uses symbols
8763: or "symbs"X<symb>. These identifiers are built from the URL of the
8764: map, the resource number of the resource in the map, and the URL of
8765: the resource itself. The latter is somewhat redundant, but might help
8766: if maps change.
8767:
8768: An example is
8769:
8770: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
8771:
8772: The respective map entry is
8773:
8774: <resource id="19" src="/res/msu/korte/tests/part12.problem"
8775: title="Problem 2">
8776: </resource>
8777:
8778: Symbs are used by the random number generator, as well as to store and
8779: restore data specific to a certain instance of for example a problem.
8780:
8781: =head2 Storing And Retrieving Data
8782:
8783: X<store()>X<cstore()>X<restore()>Three of the most important functions
8784: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
8785: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
8786: is is the non-critical message twin of cstore. These functions are for
8787: handlers to store a perl hash to a user's permanent data space in an
8788: easy manner, and to retrieve it again on another call. It is expected
8789: that a handler would use this once at the beginning to retrieve data,
8790: and then again once at the end to send only the new data back.
8791:
8792: The data is stored in the user's data directory on the user's
8793: homeserver under the ID of the course.
8794:
8795: The hash that is returned by restore will have all of the previous
8796: value for all of the elements of the hash.
8797:
8798: Example:
8799:
8800: #creating a hash
8801: my %hash;
8802: $hash{'foo'}='bar';
8803:
8804: #storing it
8805: &Apache::lonnet::cstore(\%hash);
8806:
8807: #changing a value
8808: $hash{'foo'}='notbar';
8809:
8810: #adding a new value
8811: $hash{'bar'}='foo';
8812: &Apache::lonnet::cstore(\%hash);
8813:
8814: #retrieving the hash
8815: my %history=&Apache::lonnet::restore();
8816:
8817: #print the hash
8818: foreach my $key (sort(keys(%history))) {
8819: print("\%history{$key} = $history{$key}");
8820: }
8821:
8822: Will print out:
8823:
8824: %history{1:foo} = bar
8825: %history{1:keys} = foo:timestamp
8826: %history{1:timestamp} = 990455579
8827: %history{2:bar} = foo
8828: %history{2:foo} = notbar
8829: %history{2:keys} = foo:bar:timestamp
8830: %history{2:timestamp} = 990455580
8831: %history{bar} = foo
8832: %history{foo} = notbar
8833: %history{timestamp} = 990455580
8834: %history{version} = 2
8835:
8836: Note that the special hash entries C<keys>, C<version> and
8837: C<timestamp> were added to the hash. C<version> will be equal to the
8838: total number of versions of the data that have been stored. The
8839: C<timestamp> attribute will be the UNIX time the hash was
8840: stored. C<keys> is available in every historical section to list which
8841: keys were added or changed at a specific historical revision of a
8842: hash.
8843:
8844: B<Warning>: do not store the hash that restore returns directly. This
8845: will cause a mess since it will restore the historical keys as if the
8846: were new keys. I.E. 1:foo will become 1:1:foo etc.
8847:
8848: Calling convention:
8849:
8850: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
8851: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
8852:
8853: For more detailed information, see lonnet specific documentation.
8854:
8855: =head1 RETURN MESSAGES
8856:
8857: =over 4
8858:
8859: =item * B<con_lost>: unable to contact remote host
8860:
8861: =item * B<con_delayed>: unable to contact remote host, message will be delivered
8862: when the connection is brought back up
8863:
8864: =item * B<con_failed>: unable to contact remote host and unable to save message
8865: for later delivery
8866:
8867: =item * B<error:>: an error a occured, a description of the error follows the :
8868:
8869: =item * B<no_such_host>: unable to fund a host associated with the user/domain
8870: that was requested
8871:
8872: =back
8873:
8874: =head1 PUBLIC SUBROUTINES
8875:
8876: =head2 Session Environment Functions
8877:
8878: =over 4
8879:
8880: =item *
8881: X<appenv()>
8882: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
8883: the user envirnoment file, and will be restored for each access this
8884: user makes during this session, also modifies the %env for the current
8885: process. Optional rolesarrayref - if defined contains a reference to an array
8886: of roles which are exempt from the restriction on modifying user.role entries
8887: in the user's environment.db and in %env.
8888:
8889: =item *
8890: X<delenv()>
8891: B<delenv($regexp)>: removes all items from the session
8892: environment file that matches the regular expression in $regexp. The
8893: values are also delted from the current processes %env.
8894:
8895: =item * get_env_multiple($name)
8896:
8897: gets $name from the %env hash, it seemlessly handles the cases where multiple
8898: values may be defined and end up as an array ref.
8899:
8900: returns an array of values
8901:
8902: =back
8903:
8904: =head2 User Information
8905:
8906: =over 4
8907:
8908: =item *
8909: X<queryauthenticate()>
8910: B<queryauthenticate($uname,$udom)>: try to determine user's current
8911: authentication scheme
8912:
8913: =item *
8914: X<authenticate()>
8915: B<authenticate($uname,$upass,$udom)>: try to
8916: authenticate user from domain's lib servers (first use the current
8917: one). C<$upass> should be the users password.
8918:
8919: =item *
8920: X<homeserver()>
8921: B<homeserver($uname,$udom)>: find the server which has
8922: the user's directory and files (there must be only one), this caches
8923: the answer, and also caches if there is a borken connection.
8924:
8925: =item *
8926: X<idget()>
8927: B<idget($udom,@ids)>: find the usernames behind a list of IDs
8928: (IDs are a unique resource in a domain, there must be only 1 ID per
8929: username, and only 1 username per ID in a specific domain) (returns
8930: hash: id=>name,id=>name)
8931:
8932: =item *
8933: X<idrget()>
8934: B<idrget($udom,@unames)>: find the IDs behind a list of
8935: usernames (returns hash: name=>id,name=>id)
8936:
8937: =item *
8938: X<idput()>
8939: B<idput($udom,%ids)>: store away a list of names and associated IDs
8940:
8941: =item *
8942: X<rolesinit()>
8943: B<rolesinit($udom,$username,$authhost)>: get user privileges
8944:
8945: =item *
8946: X<getsection()>
8947: B<getsection($udom,$uname,$cname)>: finds the section of student in the
8948: course $cname, return section name/number or '' for "not in course"
8949: and '-1' for "no section"
8950:
8951: =item *
8952: X<userenvironment()>
8953: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
8954: passed in @what from the requested user's environment, returns a hash
8955:
8956: =item *
8957: X<userlog_query()>
8958: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
8959: activity.log file. %filters defines filters applied when parsing the
8960: log file. These can be start or end timestamps, or the type of action
8961: - log to look for Login or Logout events, check for Checkin or
8962: Checkout, role for role selection. The response is in the form
8963: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
8964: escaped strings of the action recorded in the activity.log file.
8965:
8966: =back
8967:
8968: =head2 User Roles
8969:
8970: =over 4
8971:
8972: =item *
8973:
8974: allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
8975: F: full access
8976: U,I,K: authentication modes (cxx only)
8977: '': forbidden
8978: 1: user needs to choose course
8979: 2: browse allowed
8980: A: passphrase authentication needed
8981:
8982: =item *
8983:
8984: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
8985: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
8986: and course level
8987:
8988: =item *
8989:
8990: plaintext($short) : return value in %prp hash (rolesplain.tab); plain text
8991: explanation of a user role term
8992:
8993: =item *
8994:
8995: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
8996: All arguments are optional. Returns a hash of a roles, either for
8997: co-author/assistant author roles for a user's Construction Space
8998: (default), or if $context is 'userroles', roles for the user himself,
8999: In the hash, keys are set to colon-separated $uname,$udom,$role, and
9000: (optionally) if $withsec is true, a fourth colon-separated item - $section.
9001: For each key, value is set to colon-separated start and end times for
9002: the role. If no username and domain are specified, will default to
9003: current user/domain. Types, roles, and roledoms are references to arrays
9004: of role statuses (active, future or previous), roles
9005: (e.g., cc,in, st etc.) and domains of the roles which can be used
9006: to restrict the list of roles reported. If no array ref is
9007: provided for types, will default to return only active roles.
9008:
9009: =back
9010:
9011: =head2 User Modification
9012:
9013: =over 4
9014:
9015: =item *
9016:
9017: assignrole($udom,$uname,$url,$role,$end,$start) : assign role; give a role to a
9018: user for the level given by URL. Optional start and end dates (leave empty
9019: string or zero for "no date")
9020:
9021: =item *
9022:
9023: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
9024: change a users, password, possible return values are: ok,
9025: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
9026: refused
9027:
9028: =item *
9029:
9030: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
9031:
9032: =item *
9033:
9034: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene) :
9035: modify user
9036:
9037: =item *
9038:
9039: modifystudent
9040:
9041: modify a students enrollment and identification information.
9042: The course id is resolved based on the current users environment.
9043: This means the envoking user must be a course coordinator or otherwise
9044: associated with a course.
9045:
9046: This call is essentially a wrapper for lonnet::modifyuser and
9047: lonnet::modify_student_enrollment
9048:
9049: Inputs:
9050:
9051: =over 4
9052:
9053: =item B<$udom> Students loncapa domain
9054:
9055: =item B<$uname> Students loncapa login name
9056:
9057: =item B<$uid> Students id/student number
9058:
9059: =item B<$umode> Students authentication mode
9060:
9061: =item B<$upass> Students password
9062:
9063: =item B<$first> Students first name
9064:
9065: =item B<$middle> Students middle name
9066:
9067: =item B<$last> Students last name
9068:
9069: =item B<$gene> Students generation
9070:
9071: =item B<$usec> Students section in course
9072:
9073: =item B<$end> Unix time of the roles expiration
9074:
9075: =item B<$start> Unix time of the roles start date
9076:
9077: =item B<$forceid> If defined, allow $uid to be changed
9078:
9079: =item B<$desiredhome> server to use as home server for student
9080:
9081: =back
9082:
9083: =item *
9084:
9085: modify_student_enrollment
9086:
9087: Change a students enrollment status in a class. The environment variable
9088: 'role.request.course' must be defined for this function to proceed.
9089:
9090: Inputs:
9091:
9092: =over 4
9093:
9094: =item $udom, students domain
9095:
9096: =item $uname, students name
9097:
9098: =item $uid, students user id
9099:
9100: =item $first, students first name
9101:
9102: =item $middle
9103:
9104: =item $last
9105:
9106: =item $gene
9107:
9108: =item $usec
9109:
9110: =item $end
9111:
9112: =item $start
9113:
9114: =back
9115:
9116:
9117: =item *
9118:
9119: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
9120: custom role; give a custom role to a user for the level given by URL. Specify
9121: name and domain of role author, and role name
9122:
9123: =item *
9124:
9125: revokerole($udom,$uname,$url,$role) : revoke a role for url
9126:
9127: =item *
9128:
9129: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
9130:
9131: =back
9132:
9133: =head2 Course Infomation
9134:
9135: =over 4
9136:
9137: =item *
9138:
9139: coursedescription($courseid) : returns a hash of information about the
9140: specified course id, including all environment settings for the
9141: course, the description of the course will be in the hash under the
9142: key 'description'
9143:
9144: =item *
9145:
9146: resdata($name,$domain,$type,@which) : request for current parameter
9147: setting for a specific $type, where $type is either 'course' or 'user',
9148: @what should be a list of parameters to ask about. This routine caches
9149: answers for 5 minutes.
9150:
9151: =item *
9152:
9153: get_courseresdata($courseid, $domain) : dump the entire course resource
9154: data base, returning a hash that is keyed by the resource name and has
9155: values that are the resource value. I believe that the timestamps and
9156: versions are also returned.
9157:
9158:
9159: =back
9160:
9161: =head2 Course Modification
9162:
9163: =over 4
9164:
9165: =item *
9166:
9167: writecoursepref($courseid,%prefs) : write preferences (environment
9168: database) for a course
9169:
9170: =item *
9171:
9172: createcourse($udom,$description,$url) : make/modify course
9173:
9174: =back
9175:
9176: =head2 Resource Subroutines
9177:
9178: =over 4
9179:
9180: =item *
9181:
9182: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
9183:
9184: =item *
9185:
9186: repcopy($filename) : subscribes to the requested file, and attempts to
9187: replicate from the owning library server, Might return
9188: 'unavailable', 'not_found', 'forbidden', 'ok', or
9189: 'bad_request', also attempts to grab the metadata for the
9190: resource. Expects the local filesystem pathname
9191: (/home/httpd/html/res/....)
9192:
9193: =back
9194:
9195: =head2 Resource Information
9196:
9197: =over 4
9198:
9199: =item *
9200:
9201: EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
9202: a vairety of different possible values, $varname should be a request
9203: string, and the other parameters can be used to specify who and what
9204: one is asking about.
9205:
9206: Possible values for $varname are environment.lastname (or other item
9207: from the envirnment hash), user.name (or someother aspect about the
9208: user), resource.0.maxtries (or some other part and parameter of a
9209: resource)
9210:
9211: =item *
9212:
9213: directcondval($number) : get current value of a condition; reads from a state
9214: string
9215:
9216: =item *
9217:
9218: condval($condidx) : value of condition index based on state
9219:
9220: =item *
9221:
9222: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
9223: resource's metadata, $what should be either a specific key, or either
9224: 'keys' (to get a list of possible keys) or 'packages' to get a list of
9225: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
9226:
9227: this function automatically caches all requests
9228:
9229: =item *
9230:
9231: metadata_query($query,$custom,$customshow) : make a metadata query against the
9232: network of library servers; returns file handle of where SQL and regex results
9233: will be stored for query
9234:
9235: =item *
9236:
9237: symbread($filename) : return symbolic list entry (filename argument optional);
9238: returns the data handle
9239:
9240: =item *
9241:
9242: symbverify($symb,$thisfn) : verifies that $symb actually exists and is
9243: a possible symb for the URL in $thisfn, and if is an encryypted
9244: resource that the user accessed using /enc/ returns a 1 on success, 0
9245: on failure, user must be in a course, as it assumes the existance of
9246: the course initial hash, and uses $env('request.course.id'}
9247:
9248:
9249: =item *
9250:
9251: symbclean($symb) : removes versions numbers from a symb, returns the
9252: cleaned symb
9253:
9254: =item *
9255:
9256: is_on_map($uri) : checks if the $uri is somewhere on the current
9257: course map, user must be in a course for it to work.
9258:
9259: =item *
9260:
9261: numval($salt) : return random seed value (addend for rndseed)
9262:
9263: =item *
9264:
9265: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
9266: a random seed, all arguments are optional, if they aren't sent it uses the
9267: environment to derive them. Note: if symb isn't sent and it can't get one
9268: from &symbread it will use the current time as its return value
9269:
9270: =item *
9271:
9272: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
9273: unfakeable, receipt
9274:
9275: =item *
9276:
9277: receipt() : API to ireceipt working off of env values; given out to users
9278:
9279: =item *
9280:
9281: countacc($url) : count the number of accesses to a given URL
9282:
9283: =item *
9284:
9285: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
9286:
9287: =item *
9288:
9289: checkin($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 $tcrsid)
9290:
9291: =item *
9292:
9293: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
9294:
9295: =item *
9296:
9297: devalidate($symb) : devalidate temporary spreadsheet calculations,
9298: forcing spreadsheet to reevaluate the resource scores next time.
9299:
9300: =back
9301:
9302: =head2 Storing/Retreiving Data
9303:
9304: =over 4
9305:
9306: =item *
9307:
9308: store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
9309: for this url; hashref needs to be given and should be a \%hashname; the
9310: remaining args aren't required and if they aren't passed or are '' they will
9311: be derived from the env
9312:
9313: =item *
9314:
9315: cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
9316: uses critical subroutine
9317:
9318: =item *
9319:
9320: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
9321: all args are optional
9322:
9323: =item *
9324:
9325: dumpstore($namespace,$udom,$uname,$regexp,$range) :
9326: dumps the complete (or key matching regexp) namespace into a hash
9327: ($udom, $uname, $regexp, $range are optional) for a namespace that is
9328: normally &store()ed into
9329:
9330: $range should be either an integer '100' (give me the first 100
9331: matching records)
9332: or be two integers sperated by a - with no spaces
9333: '30-50' (give me the 30th through the 50th matching
9334: records)
9335:
9336:
9337: =item *
9338:
9339: putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
9340: replaces a &store() version of data with a replacement set of data
9341: for a particular resource in a namespace passed in the $storehash hash
9342: reference
9343:
9344: =item *
9345:
9346: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
9347: works very similar to store/cstore, but all data is stored in a
9348: temporary location and can be reset using tmpreset, $storehash should
9349: be a hash reference, returns nothing on success
9350:
9351: =item *
9352:
9353: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
9354: similar to restore, but all data is stored in a temporary location and
9355: can be reset using tmpreset. Returns a hash of values on success,
9356: error string otherwise.
9357:
9358: =item *
9359:
9360: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
9361: deltes all keys for $symb form the temporary storage hash.
9362:
9363: =item *
9364:
9365: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
9366: reference filled in from namesp ($udom and $uname are optional)
9367:
9368: =item *
9369:
9370: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
9371: namesp ($udom and $uname are optional)
9372:
9373: =item *
9374:
9375: dump($namespace,$udom,$uname,$regexp,$range) :
9376: dumps the complete (or key matching regexp) namespace into a hash
9377: ($udom, $uname, $regexp, $range are optional)
9378:
9379: $range should be either an integer '100' (give me the first 100
9380: matching records)
9381: or be two integers sperated by a - with no spaces
9382: '30-50' (give me the 30th through the 50th matching
9383: records)
9384: =item *
9385:
9386: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
9387: $store can be a scalar, an array reference, or if the amount to be
9388: incremented is > 1, a hash reference.
9389:
9390: ($udom and $uname are optional)
9391:
9392: =item *
9393:
9394: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
9395: ($udom and $uname are optional)
9396:
9397: =item *
9398:
9399: cput($namespace,$storehash,$udom,$uname) : critical put
9400: ($udom and $uname are optional)
9401:
9402: =item *
9403:
9404: newput($namespace,$storehash,$udom,$uname) :
9405:
9406: Attempts to store the items in the $storehash, but only if they don't
9407: currently exist, if this succeeds you can be certain that you have
9408: successfully created a new key value pair in the $namespace db.
9409:
9410:
9411: Args:
9412: $namespace: name of database to store values to
9413: $storehash: hashref to store to the db
9414: $udom: (optional) domain of user containing the db
9415: $uname: (optional) name of user caontaining the db
9416:
9417: Returns:
9418: 'ok' -> succeeded in storing all keys of $storehash
9419: 'key_exists: <key>' -> failed to anything out of $storehash, as at
9420: least <key> already existed in the db (other
9421: requested keys may also already exist)
9422: 'error: <msg>' -> unable to tie the DB or other erorr occured
9423: 'con_lost' -> unable to contact request server
9424: 'refused' -> action was not allowed by remote machine
9425:
9426:
9427: =item *
9428:
9429: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
9430: reference filled in from namesp (encrypts the return communication)
9431: ($udom and $uname are optional)
9432:
9433: =item *
9434:
9435: log($udom,$name,$home,$message) : write to permanent log for user; use
9436: critical subroutine
9437:
9438: =item *
9439:
9440: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
9441: array reference filled in from namespace found in domain level on either
9442: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
9443:
9444: =item *
9445:
9446: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
9447: domain level either on specified domain server ($uhome) or primary domain
9448: server ($udom and $uhome are optional)
9449:
9450: =item *
9451:
9452: get_domain_defaults($target_domain) : returns hash with defaults for
9453: authentication and language in the domain. Keys are: auth_def, auth_arg_def,
9454: lang_def; corresponsing values are authentication type (internal, krb4, krb5,
9455: or localauth), initial password or a kerberos realm, language (e.g., en-us).
9456: Values are retrieved from cache (if current), or from domain's configuration.db
9457: (if available), or lastly from values in lonTabs/dns_domain,tab,
9458: or lonTabs/domain.tab.
9459:
9460: %domdefaults = &get_auth_defaults($target_domain);
9461:
9462: =back
9463:
9464: =head2 Network Status Functions
9465:
9466: =over 4
9467:
9468: =item *
9469:
9470: dirlist($uri) : return directory list based on URI
9471:
9472: =item *
9473:
9474: spareserver() : find server with least workload from spare.tab
9475:
9476: =back
9477:
9478: =head2 Apache Request
9479:
9480: =over 4
9481:
9482: =item *
9483:
9484: ssi($url,%hash) : server side include, does a complete request cycle on url to
9485: localhost, posts hash
9486:
9487: =back
9488:
9489: =head2 Data to String to Data
9490:
9491: =over 4
9492:
9493: =item *
9494:
9495: hash2str(%hash) : convert a hash into a string complete with escaping and '='
9496: and '&' separators, supports elements that are arrayrefs and hashrefs
9497:
9498: =item *
9499:
9500: hashref2str($hashref) : convert a hashref into a string complete with
9501: escaping and '=' and '&' separators, supports elements that are
9502: arrayrefs and hashrefs
9503:
9504: =item *
9505:
9506: arrayref2str($arrayref) : convert an arrayref into a string complete
9507: with escaping and '&' separators, supports elements that are arrayrefs
9508: and hashrefs
9509:
9510: =item *
9511:
9512: str2hash($string) : convert string to hash using unescaping and
9513: splitting on '=' and '&', supports elements that are arrayrefs and
9514: hashrefs
9515:
9516: =item *
9517:
9518: str2array($string) : convert string to hash using unescaping and
9519: splitting on '&', supports elements that are arrayrefs and hashrefs
9520:
9521: =back
9522:
9523: =head2 Logging Routines
9524:
9525: =over 4
9526:
9527: These routines allow one to make log messages in the lonnet.log and
9528: lonnet.perm logfiles.
9529:
9530: =item *
9531:
9532: logtouch() : make sure the logfile, lonnet.log, exists
9533:
9534: =item *
9535:
9536: logthis() : append message to the normal lonnet.log file, it gets
9537: preiodically rolled over and deleted.
9538:
9539: =item *
9540:
9541: logperm() : append a permanent message to lonnet.perm.log, this log
9542: file never gets deleted by any automated portion of the system, only
9543: messages of critical importance should go in here.
9544:
9545: =back
9546:
9547: =head2 General File Helper Routines
9548:
9549: =over 4
9550:
9551: =item *
9552:
9553: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
9554: (a) files in /uploaded
9555: (i) If a local copy of the file exists -
9556: compares modification date of local copy with last-modified date for
9557: definitive version stored on home server for course. If local copy is
9558: stale, requests a new version from the home server and stores it.
9559: If the original has been removed from the home server, then local copy
9560: is unlinked.
9561: (ii) If local copy does not exist -
9562: requests the file from the home server and stores it.
9563:
9564: If $caller is 'uploadrep':
9565: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
9566: for request for files originally uploaded via DOCS.
9567: - returns 'ok' if fresh local copy now available, -1 otherwise.
9568:
9569: Otherwise:
9570: This indicates a call from the content generation phase of the request.
9571: - returns the entire contents of the file or -1.
9572:
9573: (b) files in /res
9574: - returns the entire contents of a file or -1;
9575: it properly subscribes to and replicates the file if neccessary.
9576:
9577:
9578: =item *
9579:
9580: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
9581: reference
9582:
9583: returns either a stat() list of data about the file or an empty list
9584: if the file doesn't exist or couldn't find out about it (connection
9585: problems or user unknown)
9586:
9587: =item *
9588:
9589: filelocation($dir,$file) : returns file system location of a file
9590: based on URI; meant to be "fairly clean" absolute reference, $dir is a
9591: directory that relative $file lookups are to looked in ($dir of /a/dir
9592: and a file of ../bob will become /a/bob)
9593:
9594: =item *
9595:
9596: hreflocation($dir,$file) : returns file system location or a URL; same as
9597: filelocation except for hrefs
9598:
9599: =item *
9600:
9601: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
9602:
9603: =back
9604:
9605: =head2 Usererfile file routines (/uploaded*)
9606:
9607: =over 4
9608:
9609: =item *
9610:
9611: userfileupload(): main rotine for putting a file in a user or course's
9612: filespace, arguments are,
9613:
9614: formname - required - this is the name of the element in $env where the
9615: filename, and the contents of the file to create/modifed exist
9616: the filename is in $env{'form.'.$formname.'.filename'} and the
9617: contents of the file is located in $env{'form.'.$formname}
9618: coursedoc - if true, store the file in the course of the active role
9619: of the current user
9620: subdir - required - subdirectory to put the file in under ../userfiles/
9621: if undefined, it will be placed in "unknown"
9622:
9623: (This routine calls clean_filename() to remove any dangerous
9624: characters from the filename, and then calls finuserfileupload() to
9625: complete the transaction)
9626:
9627: returns either the url of the uploaded file (/uploaded/....) if successful
9628: and /adm/notfound.html if unsuccessful
9629:
9630: =item *
9631:
9632: clean_filename(): routine for cleaing a filename up for storage in
9633: userfile space, argument is:
9634:
9635: filename - proposed filename
9636:
9637: returns: the new clean filename
9638:
9639: =item *
9640:
9641: finishuserfileupload(): routine that creaes and sends the file to
9642: userspace, probably shouldn't be called directly
9643:
9644: docuname: username or courseid of destination for the file
9645: docudom: domain of user/course of destination for the file
9646: formname: same as for userfileupload()
9647: fname: filename (inculding subdirectories) for the file
9648:
9649: returns either the url of the uploaded file (/uploaded/....) if successful
9650: and /adm/notfound.html if unsuccessful
9651:
9652: =item *
9653:
9654: renameuserfile(): renames an existing userfile to a new name
9655:
9656: Args:
9657: docuname: username or courseid of destination for the file
9658: docudom: domain of user/course of destination for the file
9659: old: current file name (including any subdirs under userfiles)
9660: new: desired file name (including any subdirs under userfiles)
9661:
9662: =item *
9663:
9664: mkdiruserfile(): creates a directory is a userfiles dir
9665:
9666: Args:
9667: docuname: username or courseid of destination for the file
9668: docudom: domain of user/course of destination for the file
9669: dir: dir to create (including any subdirs under userfiles)
9670:
9671: =item *
9672:
9673: removeuserfile(): removes a file that exists in userfiles
9674:
9675: Args:
9676: docuname: username or courseid of destination for the file
9677: docudom: domain of user/course of destination for the file
9678: fname: filname to delete (including any subdirs under userfiles)
9679:
9680: =item *
9681:
9682: removeuploadedurl(): convience function for removeuserfile()
9683:
9684: Args:
9685: url: a full /uploaded/... url to delete
9686:
9687: =item *
9688:
9689: get_portfile_permissions():
9690: Args:
9691: domain: domain of user or course contain the portfolio files
9692: user: name of user or num of course contain the portfolio files
9693: Returns:
9694: hashref of a dump of the proper file_permissions.db
9695:
9696:
9697: =item *
9698:
9699: get_access_controls():
9700:
9701: Args:
9702: current_permissions: the hash ref returned from get_portfile_permissions()
9703: group: (optional) the group you want the files associated with
9704: file: (optional) the file you want access info on
9705:
9706: Returns:
9707: a hash (keys are file names) of hashes containing
9708: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
9709: values are XML containing access control settings (see below)
9710:
9711: Internal notes:
9712:
9713: access controls are stored in file_permissions.db as key=value pairs.
9714: key -> path to file/file_name\0uniqueID:scope_end_start
9715: where scope -> public,guest,course,group,domains or users.
9716: end -> UNIX time for end of access (0 -> no end date)
9717: start -> UNIX time for start of access
9718:
9719: value -> XML description of access control
9720: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
9721: <start></start>
9722: <end></end>
9723:
9724: <password></password> for scope type = guest
9725:
9726: <domain></domain> for scope type = course or group
9727: <number></number>
9728: <roles id="">
9729: <role></role>
9730: <access></access>
9731: <section></section>
9732: <group></group>
9733: </roles>
9734:
9735: <dom></dom> for scope type = domains
9736:
9737: <users> for scope type = users
9738: <user>
9739: <uname></uname>
9740: <udom></udom>
9741: </user>
9742: </users>
9743: </scope>
9744:
9745: Access data is also aggregated for each file in an additional key=value pair:
9746: key -> path to file/file_name\0accesscontrol
9747: value -> reference to hash
9748: hash contains key = value pairs
9749: where key = uniqueID:scope_end_start
9750: value = UNIX time record was last updated
9751:
9752: Used to improve speed of look-ups of access controls for each file.
9753:
9754: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
9755:
9756: modify_access_controls():
9757:
9758: Modifies access controls for a portfolio file
9759: Args
9760: 1. file name
9761: 2. reference to hash of required changes,
9762: 3. domain
9763: 4. username
9764: where domain,username are the domain of the portfolio owner
9765: (either a user or a course)
9766:
9767: Returns:
9768: 1. result of additions or updates ('ok' or 'error', with error message).
9769: 2. result of deletions ('ok' or 'error', with error message).
9770: 3. reference to hash of any new or updated access controls.
9771: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
9772: key = integer (inbound ID)
9773: value = uniqueID
9774:
9775: =back
9776:
9777: =head2 HTTP Helper Routines
9778:
9779: =over 4
9780:
9781: =item *
9782:
9783: escape() : unpack non-word characters into CGI-compatible hex codes
9784:
9785: =item *
9786:
9787: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
9788:
9789: =back
9790:
9791: =head1 PRIVATE SUBROUTINES
9792:
9793: =head2 Underlying communication routines (Shouldn't call)
9794:
9795: =over 4
9796:
9797: =item *
9798:
9799: subreply() : tries to pass a message to lonc, returns con_lost if incapable
9800:
9801: =item *
9802:
9803: reply() : uses subreply to send a message to remote machine, logs all failures
9804:
9805: =item *
9806:
9807: critical() : passes a critical message to another server; if cannot
9808: get through then place message in connection buffer directory and
9809: returns con_delayed, if incapable of saving message, returns
9810: con_failed
9811:
9812: =item *
9813:
9814: reconlonc() : tries to reconnect lonc client processes.
9815:
9816: =back
9817:
9818: =head2 Resource Access Logging
9819:
9820: =over 4
9821:
9822: =item *
9823:
9824: flushcourselogs() : flush (save) buffer logs and access logs
9825:
9826: =item *
9827:
9828: courselog($what) : save message for course in hash
9829:
9830: =item *
9831:
9832: courseacclog($what) : save message for course using &courselog(). Perform
9833: special processing for specific resource types (problems, exams, quizzes, etc).
9834:
9835: =item *
9836:
9837: goodbye() : flush course logs and log shutting down; it is called in srm.conf
9838: as a PerlChildExitHandler
9839:
9840: =back
9841:
9842: =head2 Other
9843:
9844: =over 4
9845:
9846: =item *
9847:
9848: symblist($mapname,%newhash) : update symbolic storage links
9849:
9850: =back
9851:
9852: =cut
9853:
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