Annotation of loncom/lonnet/perl/lonnet.pm, revision 1.240
1.1 albertel 1: # The LearningOnline Network
2: # TCP networking package
1.12 www 3: #
1.240 ! www 4: # $Id: lonnet.pm,v 1.239 2002/06/15 20:06:21 www Exp $
1.178 www 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: #
1.169 harris41 28: # 6/1/99,6/2,6/10,6/11,6/12,6/14,6/26,6/28,6/29,6/30,
29: # 7/1,7/2,7/9,7/10,7/12,7/14,7/15,7/19,
30: # 11/8,11/16,11/18,11/22,11/23,12/22,
31: # 01/06,01/13,02/24,02/28,02/29,
32: # 03/01,03/02,03/06,03/07,03/13,
33: # 04/05,05/29,05/31,06/01,
34: # 06/05,06/26 Gerd Kortemeyer
35: # 06/26 Ben Tyszka
36: # 06/30,07/15,07/17,07/18,07/20,07/21,07/22,07/25 Gerd Kortemeyer
37: # 08/14 Ben Tyszka
38: # 08/22,08/28,08/31,09/01,09/02,09/04,09/05,09/25,09/28,09/30 Gerd Kortemeyer
39: # 10/04 Gerd Kortemeyer
40: # 10/04 Guy Albertelli
41: # 10/06,10/09,10/10,10/11,10/14,10/20,10/23,10/25,10/26,10/27,10/28,10/29,
42: # 10/30,10/31,
43: # 11/2,11/14,11/15,11/16,11/20,11/21,11/22,11/25,11/27,
44: # 12/02,12/12,12/13,12/14,12/28,12/29 Gerd Kortemeyer
45: # 05/01/01 Guy Albertelli
46: # 05/01,06/01,09/01 Gerd Kortemeyer
47: # 09/01 Guy Albertelli
48: # 09/01,10/01,11/01 Gerd Kortemeyer
49: # YEAR=2001
50: # 02/27/01 Scott Harrison
51: # 3/2 Gerd Kortemeyer
52: # 3/15,3/19 Scott Harrison
53: # 3/19,3/20 Gerd Kortemeyer
54: # 3/22,3/27,4/2,4/16,4/17 Scott Harrison
55: # 5/26,5/28 Gerd Kortemeyer
56: # 5/30 H. K. Ng
57: # 6/1 Gerd Kortemeyer
58: # July Guy Albertelli
59: # 8/4,8/7,8/8,8/9,8/11,8/16,8/17,8/18,8/20,8/23,9/20,9/21,9/26,
60: # 10/2 Gerd Kortemeyer
61: # 10/5,10/10,11/13,11/15 Scott Harrison
1.179 www 62: # 11/17,11/20,11/22,11/29 Gerd Kortemeyer
1.182 matthew 63: # 12/5 Matthew Hall
1.184 www 64: # 12/5 Guy Albertelli
1.190 www 65: # 12/6,12/7,12/12 Gerd Kortemeyer
1.191 harris41 66: # 12/18 Scott Harrison
1.195 www 67: # 12/21,12/22,12/27,12/28 Gerd Kortemeyer
1.196 www 68: # YEAR=2002
1.200 www 69: # 1/4,2/4,2/7 Gerd Kortemeyer
1.171 www 70: #
1.169 harris41 71: ###
72:
1.1 albertel 73: package Apache::lonnet;
74:
75: use strict;
76: use Apache::File;
1.8 www 77: use LWP::UserAgent();
1.15 www 78: use HTTP::Headers;
1.11 www 79: use vars
1.231 stredwic 80: qw(%perlvar %hostname %homecache %badServerCache %hostip %spareid %hostdom
1.192 www 81: %libserv %pr %prp %metacache %packagetab
1.188 www 82: %courselogs %accesshash $processmarker $dumpcount
1.200 www 83: %coursedombuf %coursehombuf %courseresdatacache);
1.1 albertel 84: use IO::Socket;
1.31 www 85: use GDBM_File;
1.8 www 86: use Apache::Constants qw(:common :http);
1.208 albertel 87: use HTML::LCParser;
1.88 www 88: use Fcntl qw(:flock);
1.195 www 89: my $readit;
1.1 albertel 90:
91: # --------------------------------------------------------------------- Logging
92:
1.163 harris41 93: sub logtouch {
94: my $execdir=$perlvar{'lonDaemons'};
95: unless (-e "$execdir/logs/lonnet.log") {
96: my $fh=Apache::File->new(">>$execdir/logs/lonnet.log");
97: close $fh;
98: }
99: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
100: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
101: }
102:
1.1 albertel 103: sub logthis {
104: my $message=shift;
105: my $execdir=$perlvar{'lonDaemons'};
106: my $now=time;
107: my $local=localtime($now);
1.162 harris41 108: my $fh=Apache::File->new(">>$execdir/logs/lonnet.log");
109: print $fh "$local ($$): $message\n";
1.1 albertel 110: return 1;
111: }
112:
113: sub logperm {
114: my $message=shift;
115: my $execdir=$perlvar{'lonDaemons'};
116: my $now=time;
117: my $local=localtime($now);
1.162 harris41 118: my $fh=Apache::File->new(">>$execdir/logs/lonnet.perm.log");
119: print $fh "$now:$message:$local\n";
1.1 albertel 120: return 1;
121: }
122:
123: # -------------------------------------------------- Non-critical communication
124: sub subreply {
125: my ($cmd,$server)=@_;
126: my $peerfile="$perlvar{'lonSockDir'}/$server";
127: my $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
128: Type => SOCK_STREAM,
129: Timeout => 10)
130: or return "con_lost";
131: print $client "$cmd\n";
132: my $answer=<$client>;
1.9 www 133: if (!$answer) { $answer="con_lost"; }
1.1 albertel 134: chomp($answer);
135: return $answer;
136: }
137:
138: sub reply {
139: my ($cmd,$server)=@_;
1.205 www 140: unless (defined($hostname{$server})) { return 'no_such_host'; }
1.1 albertel 141: my $answer=subreply($cmd,$server);
1.203 www 142: if ($answer eq 'con_lost') {
1.233 albertel 143: #sleep 5;
144: #$answer=subreply($cmd,$server);
145: #if ($answer eq 'con_lost') {
146: # &logthis("Second attempt con_lost on $server");
147: # my $peerfile="$perlvar{'lonSockDir'}/$server";
148: # my $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
149: # Type => SOCK_STREAM,
150: # Timeout => 10)
151: # or return "con_lost";
152: # &logthis("Killing socket");
153: # print $client "close_connection_exit\n";
154: #sleep 5;
155: # $answer=subreply($cmd,$server);
156: #}
1.203 www 157: }
1.65 www 158: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
1.12 www 159: &logthis("<font color=blue>WARNING:".
160: " $cmd to $server returned $answer</font>");
161: }
1.1 albertel 162: return $answer;
163: }
164:
165: # ----------------------------------------------------------- Send USR1 to lonc
166:
167: sub reconlonc {
168: my $peerfile=shift;
169: &logthis("Trying to reconnect for $peerfile");
170: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
171: if (my $fh=Apache::File->new("$loncfile")) {
172: my $loncpid=<$fh>;
173: chomp($loncpid);
174: if (kill 0 => $loncpid) {
175: &logthis("lonc at pid $loncpid responding, sending USR1");
176: kill USR1 => $loncpid;
177: sleep 1;
178: if (-e "$peerfile") { return; }
179: &logthis("$peerfile still not there, give it another try");
180: sleep 5;
181: if (-e "$peerfile") { return; }
1.12 www 182: &logthis(
183: "<font color=blue>WARNING: $peerfile still not there, giving up</font>");
1.1 albertel 184: } else {
1.12 www 185: &logthis(
186: "<font color=blue>WARNING:".
187: " lonc at pid $loncpid not responding, giving up</font>");
1.1 albertel 188: }
189: } else {
1.12 www 190: &logthis('<font color=blue>WARNING: lonc not running, giving up</font>');
1.1 albertel 191: }
192: }
193:
194: # ------------------------------------------------------ Critical communication
1.12 www 195:
1.1 albertel 196: sub critical {
197: my ($cmd,$server)=@_;
1.89 www 198: unless ($hostname{$server}) {
199: &logthis("<font color=blue>WARNING:".
200: " Critical message to unknown server ($server)</font>");
201: return 'no_such_host';
202: }
1.1 albertel 203: my $answer=reply($cmd,$server);
204: if ($answer eq 'con_lost') {
205: my $pingreply=reply('ping',$server);
206: &reconlonc("$perlvar{'lonSockDir'}/$server");
207: my $pongreply=reply('pong',$server);
208: &logthis("Ping/Pong for $server: $pingreply/$pongreply");
209: $answer=reply($cmd,$server);
210: if ($answer eq 'con_lost') {
211: my $now=time;
212: my $middlename=$cmd;
1.5 www 213: $middlename=substr($middlename,0,16);
1.1 albertel 214: $middlename=~s/\W//g;
215: my $dfilename=
216: "$perlvar{'lonSockDir'}/delayed/$now.$middlename.$server";
217: {
218: my $dfh;
219: if ($dfh=Apache::File->new(">$dfilename")) {
1.7 www 220: print $dfh "$cmd\n";
1.1 albertel 221: }
222: }
223: sleep 2;
224: my $wcmd='';
225: {
226: my $dfh;
227: if ($dfh=Apache::File->new("$dfilename")) {
228: $wcmd=<$dfh>;
229: }
230: }
231: chomp($wcmd);
1.7 www 232: if ($wcmd eq $cmd) {
1.12 www 233: &logthis("<font color=blue>WARNING: ".
234: "Connection buffer $dfilename: $cmd</font>");
1.1 albertel 235: &logperm("D:$server:$cmd");
236: return 'con_delayed';
237: } else {
1.12 www 238: &logthis("<font color=red>CRITICAL:"
239: ." Critical connection failed: $server $cmd</font>");
1.1 albertel 240: &logperm("F:$server:$cmd");
241: return 'con_failed';
242: }
243: }
244: }
245: return $answer;
246: }
247:
1.5 www 248: # ---------------------------------------------------------- Append Environment
249:
250: sub appenv {
1.6 www 251: my %newenv=@_;
1.191 harris41 252: foreach (keys %newenv) {
1.35 www 253: if (($newenv{$_}=~/^user\.role/) || ($newenv{$_}=~/^user\.priv/)) {
254: &logthis("<font color=blue>WARNING: ".
1.151 www 255: "Attempt to modify environment ".$_." to ".$newenv{$_}
256: .'</font>');
1.35 www 257: delete($newenv{$_});
258: } else {
259: $ENV{$_}=$newenv{$_};
260: }
1.191 harris41 261: }
1.95 www 262:
263: my $lockfh;
264: unless ($lockfh=Apache::File->new("$ENV{'user.environment'}")) {
1.97 www 265: return 'error: '.$!;
1.95 www 266: }
267: unless (flock($lockfh,LOCK_EX)) {
268: &logthis("<font color=blue>WARNING: ".
269: 'Could not obtain exclusive lock in appenv: '.$!);
270: $lockfh->close();
271: return 'error: '.$!;
272: }
273:
1.6 www 274: my @oldenv;
275: {
276: my $fh;
277: unless ($fh=Apache::File->new("$ENV{'user.environment'}")) {
1.97 www 278: return 'error: '.$!;
1.6 www 279: }
280: @oldenv=<$fh>;
1.89 www 281: $fh->close();
1.6 www 282: }
283: for (my $i=0; $i<=$#oldenv; $i++) {
284: chomp($oldenv[$i]);
1.9 www 285: if ($oldenv[$i] ne '') {
286: my ($name,$value)=split(/=/,$oldenv[$i]);
1.24 www 287: unless (defined($newenv{$name})) {
288: $newenv{$name}=$value;
289: }
1.9 www 290: }
1.6 www 291: }
292: {
293: my $fh;
294: unless ($fh=Apache::File->new(">$ENV{'user.environment'}")) {
295: return 'error';
296: }
297: my $newname;
1.93 www 298: foreach $newname (keys %newenv) {
1.6 www 299: print $fh "$newname=$newenv{$newname}\n";
300: }
1.86 albertel 301: $fh->close();
1.56 www 302: }
1.95 www 303:
304: $lockfh->close();
1.56 www 305: return 'ok';
306: }
307: # ----------------------------------------------------- Delete from Environment
308:
309: sub delenv {
310: my $delthis=shift;
311: my %newenv=();
312: if (($delthis=~/user\.role/) || ($delthis=~/user\.priv/)) {
313: &logthis("<font color=blue>WARNING: ".
314: "Attempt to delete from environment ".$delthis);
315: return 'error';
316: }
317: my @oldenv;
318: {
319: my $fh;
320: unless ($fh=Apache::File->new("$ENV{'user.environment'}")) {
321: return 'error';
322: }
1.89 www 323: unless (flock($fh,LOCK_SH)) {
324: &logthis("<font color=blue>WARNING: ".
325: 'Could not obtain shared lock in delenv: '.$!);
326: $fh->close();
327: return 'error: '.$!;
328: }
1.56 www 329: @oldenv=<$fh>;
1.89 www 330: $fh->close();
1.56 www 331: }
332: {
333: my $fh;
334: unless ($fh=Apache::File->new(">$ENV{'user.environment'}")) {
335: return 'error';
336: }
1.89 www 337: unless (flock($fh,LOCK_EX)) {
338: &logthis("<font color=blue>WARNING: ".
339: 'Could not obtain exclusive lock in delenv: '.$!);
340: $fh->close();
341: return 'error: '.$!;
342: }
1.191 harris41 343: foreach (@oldenv) {
1.56 www 344: unless ($_=~/^$delthis/) { print $fh $_; }
1.191 harris41 345: }
1.87 www 346: $fh->close();
1.5 www 347: }
348: return 'ok';
349: }
1.1 albertel 350:
351: # ------------------------------ Find server with least workload from spare.tab
1.11 www 352:
1.1 albertel 353: sub spareserver {
354: my $tryserver;
355: my $spareserver='';
356: my $lowestserver=100;
357: foreach $tryserver (keys %spareid) {
358: my $answer=reply('load',$tryserver);
359: if (($answer =~ /\d/) && ($answer<$lowestserver)) {
360: $spareserver="http://$hostname{$tryserver}";
361: $lowestserver=$answer;
362: }
363: }
364: return $spareserver;
1.202 matthew 365: }
366:
367: # --------------------------------------------- Try to change a user's password
368:
369: sub changepass {
370: my ($uname,$udom,$currentpass,$newpass,$server)=@_;
371: $currentpass = &escape($currentpass);
372: $newpass = &escape($newpass);
373: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass",
374: $server);
375: if (! $answer) {
376: &logthis("No reply on password change request to $server ".
377: "by $uname in domain $udom.");
378: } elsif ($answer =~ "^ok") {
379: &logthis("$uname in $udom successfully changed their password ".
380: "on $server.");
381: } elsif ($answer =~ "^pwchange_failure") {
382: &logthis("$uname in $udom was unable to change their password ".
383: "on $server. The action was blocked by either lcpasswd ".
384: "or pwchange");
385: } elsif ($answer =~ "^non_authorized") {
386: &logthis("$uname in $udom did not get their password correct when ".
387: "attempting to change it on $server.");
388: } elsif ($answer =~ "^auth_mode_error") {
389: &logthis("$uname in $udom attempted to change their password despite ".
390: "not being locally or internally authenticated on $server.");
391: } elsif ($answer =~ "^unknown_user") {
392: &logthis("$uname in $udom attempted to change their password ".
393: "on $server but were unable to because $server is not ".
394: "their home server.");
395: } elsif ($answer =~ "^refused") {
396: &logthis("$server refused to change $uname in $udom password because ".
397: "it was sent an unencrypted request to change the password.");
398: }
399: return $answer;
1.1 albertel 400: }
401:
1.169 harris41 402: # ----------------------- Try to determine user's current authentication scheme
403:
404: sub queryauthenticate {
405: my ($uname,$udom)=@_;
406: if (($perlvar{'lonRole'} eq 'library') &&
407: ($udom eq $perlvar{'lonDefDomain'})) {
408: my $answer=reply("encrypt:currentauth:$udom:$uname",
409: $perlvar{'lonHostID'});
410: unless ($answer eq 'unknown_user' or $answer eq 'refused') {
411: if (length($answer)) {
412: return $answer;
413: }
414: else {
415: &logthis("User $uname at $udom lacks an authentication mechanism");
416: return 'no_host';
417: }
418: }
419: }
420:
421: my $tryserver;
422: foreach $tryserver (keys %libserv) {
423: if ($hostdom{$tryserver} eq $udom) {
424: my $answer=reply("encrypt:currentauth:$udom:$uname",$tryserver);
425: unless ($answer eq 'unknown_user' or $answer eq 'refused') {
426: if (length($answer)) {
427: return $answer;
428: }
429: else {
430: &logthis("User $uname at $udom lacks an authentication mechanism");
431: return 'no_host';
432: }
433: }
434: }
435: }
436: &logthis("User $uname at $udom lacks an authentication mechanism");
437: return 'no_host';
438: }
439:
1.1 albertel 440: # --------- Try to authenticate user from domain's lib servers (first this one)
1.11 www 441:
1.1 albertel 442: sub authenticate {
443: my ($uname,$upass,$udom)=@_;
1.12 www 444: $upass=escape($upass);
1.199 www 445: $uname=~s/\W//g;
1.1 albertel 446: if (($perlvar{'lonRole'} eq 'library') &&
447: ($udom eq $perlvar{'lonDefDomain'})) {
1.3 www 448: my $answer=reply("encrypt:auth:$udom:$uname:$upass",$perlvar{'lonHostID'});
1.2 www 449: if ($answer =~ /authorized/) {
1.9 www 450: if ($answer eq 'authorized') {
451: &logthis("User $uname at $udom authorized by local server");
452: return $perlvar{'lonHostID'};
453: }
454: if ($answer eq 'non_authorized') {
455: &logthis("User $uname at $udom rejected by local server");
456: return 'no_host';
457: }
1.2 www 458: }
1.1 albertel 459: }
460:
461: my $tryserver;
462: foreach $tryserver (keys %libserv) {
463: if ($hostdom{$tryserver} eq $udom) {
1.10 www 464: my $answer=reply("encrypt:auth:$udom:$uname:$upass",$tryserver);
1.1 albertel 465: if ($answer =~ /authorized/) {
1.9 www 466: if ($answer eq 'authorized') {
467: &logthis("User $uname at $udom authorized by $tryserver");
468: return $tryserver;
469: }
470: if ($answer eq 'non_authorized') {
471: &logthis("User $uname at $udom rejected by $tryserver");
472: return 'no_host';
473: }
1.1 albertel 474: }
475: }
1.9 www 476: }
477: &logthis("User $uname at $udom could not be authenticated");
1.1 albertel 478: return 'no_host';
479: }
480:
481: # ---------------------- Find the homebase for a user from domain's lib servers
1.11 www 482:
1.1 albertel 483: sub homeserver {
1.230 stredwic 484: my ($uname,$udom,$ignoreBadCache)=@_;
1.1 albertel 485: my $index="$uname:$udom";
1.221 matthew 486: if ($homecache{$index}) {
487: return "$homecache{$index}";
488: }
1.1 albertel 489: my $tryserver;
490: foreach $tryserver (keys %libserv) {
1.230 stredwic 491: next if ($ignoreBadCache ne 'true' &&
1.231 stredwic 492: exists($badServerCache{$tryserver}));
1.1 albertel 493: if ($hostdom{$tryserver} eq $udom) {
494: my $answer=reply("home:$udom:$uname",$tryserver);
495: if ($answer eq 'found') {
1.221 matthew 496: $homecache{$index}=$tryserver;
1.1 albertel 497: return $tryserver;
1.231 stredwic 498: } elsif ($answer eq 'no_host') {
499: $badServerCache{$tryserver}=1;
1.221 matthew 500: }
1.1 albertel 501: }
502: }
503: return 'no_host';
1.70 www 504: }
505:
506: # ------------------------------------- Find the usernames behind a list of IDs
507:
508: sub idget {
509: my ($udom,@ids)=@_;
510: my %returnhash=();
511:
512: my $tryserver;
513: foreach $tryserver (keys %libserv) {
514: if ($hostdom{$tryserver} eq $udom) {
515: my $idlist=join('&',@ids);
516: $idlist=~tr/A-Z/a-z/;
517: my $reply=&reply("idget:$udom:".$idlist,$tryserver);
518: my @answer=();
1.76 www 519: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1.70 www 520: @answer=split(/\&/,$reply);
521: } ;
522: my $i;
523: for ($i=0;$i<=$#ids;$i++) {
524: if ($answer[$i]) {
525: $returnhash{$ids[$i]}=$answer[$i];
526: }
527: }
528: }
529: }
530: return %returnhash;
531: }
532:
533: # ------------------------------------- Find the IDs behind a list of usernames
534:
535: sub idrget {
536: my ($udom,@unames)=@_;
537: my %returnhash=();
1.191 harris41 538: foreach (@unames) {
1.70 www 539: $returnhash{$_}=(&userenvironment($udom,$_,'id'))[1];
1.191 harris41 540: }
1.70 www 541: return %returnhash;
542: }
543:
544: # ------------------------------- Store away a list of names and associated IDs
545:
546: sub idput {
547: my ($udom,%ids)=@_;
548: my %servers=();
1.191 harris41 549: foreach (keys %ids) {
1.70 www 550: my $uhom=&homeserver($_,$udom);
551: if ($uhom ne 'no_host') {
552: my $id=&escape($ids{$_});
553: $id=~tr/A-Z/a-z/;
554: my $unam=&escape($_);
555: if ($servers{$uhom}) {
556: $servers{$uhom}.='&'.$id.'='.$unam;
557: } else {
558: $servers{$uhom}=$id.'='.$unam;
559: }
560: &critical('put:'.$udom.':'.$unam.':environment:id='.$id,$uhom);
561: }
1.191 harris41 562: }
563: foreach (keys %servers) {
1.70 www 564: &critical('idput:'.$udom.':'.$servers{$_},$_);
1.191 harris41 565: }
1.70 www 566: }
567:
568: # ------------------------------------- Find the section of student in a course
569:
570: sub usection {
571: my ($udom,$unam,$courseid)=@_;
572: $courseid=~s/\_/\//g;
573: $courseid=~s/^(\w)/\/$1/;
1.191 harris41 574: foreach (split(/\&/,&reply('dump:'.$udom.':'.$unam.':roles',
575: &homeserver($unam,$udom)))) {
1.70 www 576: my ($key,$value)=split(/\=/,$_);
577: $key=&unescape($key);
578: if ($key=~/^$courseid(?:\/)*(\w+)*\_st$/) {
579: my $section=$1;
580: if ($key eq $courseid.'_st') { $section=''; }
581: my ($dummy,$end,$start)=split(/\_/,&unescape($value));
582: my $now=time;
583: my $notactive=0;
584: if ($start) {
585: if ($now<$start) { $notactive=1; }
586: }
587: if ($end) {
588: if ($now>$end) { $notactive=1; }
589: }
590: unless ($notactive) { return $section; }
591: }
1.191 harris41 592: }
1.70 www 593: return '-1';
594: }
595:
596: # ------------------------------------- Read an entry from a user's environment
597:
598: sub userenvironment {
599: my ($udom,$unam,@what)=@_;
600: my %returnhash=();
601: my @answer=split(/\&/,
602: &reply('get:'.$udom.':'.$unam.':environment:'.join('&',@what),
603: &homeserver($unam,$udom)));
604: my $i;
605: for ($i=0;$i<=$#what;$i++) {
606: $returnhash{$what[$i]}=&unescape($answer[$i]);
607: }
608: return %returnhash;
1.1 albertel 609: }
610:
611: # ----------------------------- Subscribe to a resource, return URL if possible
1.11 www 612:
1.1 albertel 613: sub subscribe {
614: my $fname=shift;
615: my $author=$fname;
616: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
617: my ($udom,$uname)=split(/\//,$author);
618: my $home=homeserver($uname,$udom);
619: if (($home eq 'no_host') || ($home eq $perlvar{'lonHostID'})) {
620: return 'not_found';
621: }
622: my $answer=reply("sub:$fname",$home);
1.64 www 623: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
624: $answer.=' by '.$home;
625: }
1.1 albertel 626: return $answer;
627: }
628:
1.8 www 629: # -------------------------------------------------------------- Replicate file
630:
631: sub repcopy {
632: my $filename=shift;
1.23 www 633: $filename=~s/\/+/\//g;
1.214 www 634: if ($filename=~/^\/home\/httpd\/html\/adm\//) { return OK; }
1.8 www 635: my $transname="$filename.in.transfer";
1.17 www 636: if ((-e $filename) || (-e $transname)) { return OK; }
1.8 www 637: my $remoteurl=subscribe($filename);
1.64 www 638: if ($remoteurl =~ /^con_lost by/) {
639: &logthis("Subscribe returned $remoteurl: $filename");
1.8 www 640: return HTTP_SERVICE_UNAVAILABLE;
641: } elsif ($remoteurl eq 'not_found') {
642: &logthis("Subscribe returned not_found: $filename");
643: return HTTP_NOT_FOUND;
1.64 www 644: } elsif ($remoteurl =~ /^rejected by/) {
645: &logthis("Subscribe returned $remoteurl: $filename");
1.8 www 646: return FORBIDDEN;
1.20 www 647: } elsif ($remoteurl eq 'directory') {
648: return OK;
1.8 www 649: } else {
650: my @parts=split(/\//,$filename);
651: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
652: if ($path ne "$perlvar{'lonDocRoot'}/res") {
653: &logthis("Malconfiguration for replication: $filename");
654: return HTTP_BAD_REQUEST;
655: }
656: my $count;
657: for ($count=5;$count<$#parts;$count++) {
658: $path.="/$parts[$count]";
659: if ((-e $path)!=1) {
660: mkdir($path,0777);
661: }
662: }
663: my $ua=new LWP::UserAgent;
664: my $request=new HTTP::Request('GET',"$remoteurl");
665: my $response=$ua->request($request,$transname);
666: if ($response->is_error()) {
667: unlink($transname);
668: my $message=$response->status_line;
1.12 www 669: &logthis("<font color=blue>WARNING:"
670: ." LWP get: $message: $filename</font>");
1.8 www 671: return HTTP_SERVICE_UNAVAILABLE;
672: } else {
1.16 www 673: if ($remoteurl!~/\.meta$/) {
674: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
675: my $mresponse=$ua->request($mrequest,$filename.'.meta');
676: if ($mresponse->is_error()) {
677: unlink($filename.'.meta');
678: &logthis(
679: "<font color=yellow>INFO: No metadata: $filename</font>");
680: }
681: }
1.8 www 682: rename($transname,$filename);
683: return OK;
684: }
685: }
686: }
687:
1.15 www 688: # --------------------------------------------------------- Server Side Include
689:
690: sub ssi {
691:
1.23 www 692: my ($fn,%form)=@_;
1.15 www 693:
694: my $ua=new LWP::UserAgent;
1.23 www 695:
696: my $request;
697:
698: if (%form) {
699: $request=new HTTP::Request('POST',"http://".$ENV{'HTTP_HOST'}.$fn);
1.201 albertel 700: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys %form));
1.23 www 701: } else {
702: $request=new HTTP::Request('GET',"http://".$ENV{'HTTP_HOST'}.$fn);
703: }
704:
1.15 www 705: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
706: my $response=$ua->request($request);
707:
708: return $response->content;
709: }
710:
1.14 www 711: # ------------------------------------------------------------------------- Log
712:
713: sub log {
714: my ($dom,$nam,$hom,$what)=@_;
1.47 www 715: return critical("log:$dom:$nam:$what",$hom);
1.157 www 716: }
717:
718: # ------------------------------------------------------------------ Course Log
719:
720: sub flushcourselogs {
721: &logthis('Flushing course log buffers');
1.191 harris41 722: foreach (keys %courselogs) {
1.157 www 723: my $crsid=$_;
1.188 www 724: if (&reply('log:'.$coursedombuf{$crsid}.':'.
725: &escape($courselogs{$crsid}),
726: $coursehombuf{$crsid}) eq 'ok') {
1.157 www 727: delete $courselogs{$crsid};
728: } else {
729: &logthis('Failed to flush log buffer for '.$crsid);
730: if (length($courselogs{$crsid})>40000) {
731: &logthis("<font color=blue>WARNING: Buffer for ".$crsid.
732: " exceeded maximum size, deleting.</font>");
733: delete $courselogs{$crsid};
734: }
735: }
1.191 harris41 736: }
1.185 www 737: &logthis('Flushing access logs');
1.191 harris41 738: foreach (keys %accesshash) {
1.185 www 739: my $entry=$_;
740: $entry=~/\_\_\_(\w+)\/(\w+)\/(.*)\_\_\_(\w+)$/;
741: my %temphash=($entry => $accesshash{$entry});
742: if (&Apache::lonnet::put('resevaldata',\%temphash,$1,$2) eq 'ok') {
743: delete $accesshash{$entry};
744: }
1.191 harris41 745: }
1.186 www 746: $dumpcount++;
1.157 www 747: }
748:
749: sub courselog {
750: my $what=shift;
1.158 www 751: $what=time.':'.$what;
1.157 www 752: unless ($ENV{'request.course.id'}) { return ''; }
1.188 www 753: $coursedombuf{$ENV{'request.course.id'}}=
754: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'}.':'.
755: $ENV{'course.'.$ENV{'request.course.id'}.'.num'};
756: $coursehombuf{$ENV{'request.course.id'}}=
757: $ENV{'course.'.$ENV{'request.course.id'}.'.home'};
1.157 www 758: if (defined $courselogs{$ENV{'request.course.id'}}) {
759: $courselogs{$ENV{'request.course.id'}}.='&'.$what;
760: } else {
761: $courselogs{$ENV{'request.course.id'}}.=$what;
762: }
763: if (length($courselogs{$ENV{'request.course.id'}})>4048) {
764: &flushcourselogs();
765: }
1.158 www 766: }
767:
768: sub courseacclog {
769: my $fnsymb=shift;
770: unless ($ENV{'request.course.id'}) { return ''; }
771: my $what=$fnsymb.':'.$ENV{'user.name'}.':'.$ENV{'user.domain'};
1.192 www 772: if ($fnsymb=~/(problem|exam|quiz|assess|survey|form)$/) {
1.187 www 773: $what.=':POST';
1.191 harris41 774: foreach (keys %ENV) {
1.158 www 775: if ($_=~/^form\.(.*)/) {
776: $what.=':'.$1.'='.$ENV{$_};
777: }
1.191 harris41 778: }
1.158 www 779: }
780: &courselog($what);
1.149 www 781: }
782:
1.185 www 783: sub countacc {
784: my $url=&declutter(shift);
785: unless ($ENV{'request.course.id'}) { return ''; }
786: $accesshash{$ENV{'request.course.id'}.'___'.$url.'___course'}=1;
1.186 www 787: my $key=$processmarker.'_'.$dumpcount.'___'.$url.'___count';
1.185 www 788: if (defined($accesshash{$key})) {
789: $accesshash{$key}++;
790: } else {
791: $accesshash{$key}=1;
792: }
793: }
794:
1.149 www 795: # ----------------------------------------------------------- Check out an item
796:
797: sub checkout {
798: my ($symb,$tuname,$tudom,$tcrsid)=@_;
799: my $now=time;
800: my $lonhost=$perlvar{'lonHostID'};
801: my $infostr=&escape(
1.234 www 802: 'CHECKOUTTOKEN&'.
1.149 www 803: $tuname.'&'.
804: $tudom.'&'.
805: $tcrsid.'&'.
806: $symb.'&'.
807: $now.'&'.$ENV{'REMOTE_ADDR'});
808: my $token=&reply('tmpput:'.$infostr,$lonhost);
1.151 www 809: if ($token=~/^error\:/) {
810: &logthis("<font color=blue>WARNING: ".
811: "Checkout tmpput failed ".$tudom.' - '.$tuname.' - '.$symb.
812: "</font>");
813: return '';
814: }
815:
1.149 www 816: $token=~s/^(\d+)\_.*\_(\d+)$/$1\*$2\*$lonhost/;
817: $token=~tr/a-z/A-Z/;
818:
1.153 www 819: my %infohash=('resource.0.outtoken' => $token,
820: 'resource.0.checkouttime' => $now,
821: 'resource.0.outremote' => $ENV{'REMOTE_ADDR'});
1.149 www 822:
823: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
824: return '';
1.151 www 825: } else {
826: &logthis("<font color=blue>WARNING: ".
827: "Checkout cstore failed ".$tudom.' - '.$tuname.' - '.$symb.
828: "</font>");
1.149 www 829: }
830:
831: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
832: &escape('Checkout '.$infostr.' - '.
833: $token)) ne 'ok') {
834: return '';
1.151 www 835: } else {
836: &logthis("<font color=blue>WARNING: ".
837: "Checkout log failed ".$tudom.' - '.$tuname.' - '.$symb.
838: "</font>");
1.149 www 839: }
1.151 www 840: return $token;
1.149 www 841: }
842:
843: # ------------------------------------------------------------ Check in an item
844:
845: sub checkin {
846: my $token=shift;
1.150 www 847: my $now=time;
848: my ($ta,$tb,$lonhost)=split(/\*/,$token);
849: $lonhost=~tr/A-Z/a-z/;
850: my $dtoken=$ta.'_'.$hostip{$lonhost}.'_'.$tb;
851: $dtoken=~s/\W/\_/g;
1.234 www 852: my ($dummy,$tuname,$tudom,$tcrsid,$symb,$chtim,$rmaddr)=
1.150 www 853: split(/\&/,&unescape(&reply('tmpget:'.$dtoken,$lonhost)));
854:
1.154 www 855: unless (($tuname) && ($tudom)) {
856: &logthis('Check in '.$token.' ('.$dtoken.') failed');
857: return '';
858: }
859:
860: unless (&allowed('mgr',$tcrsid)) {
861: &logthis('Check in '.$token.' ('.$dtoken.') unauthorized: '.
862: $ENV{'user.name'}.' - '.$ENV{'user.domain'});
863: return '';
864: }
865:
1.153 www 866: my %infohash=('resource.0.intoken' => $token,
867: 'resource.0.checkintime' => $now,
868: 'resource.0.inremote' => $ENV{'REMOTE_ADDR'});
1.150 www 869:
870: unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
871: return '';
872: }
873:
874: if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
875: &escape('Checkin - '.$token)) ne 'ok') {
876: return '';
877: }
878:
879: return ($symb,$tuname,$tudom,$tcrsid);
1.110 www 880: }
881:
882: # --------------------------------------------- Set Expire Date for Spreadsheet
883:
884: sub expirespread {
885: my ($uname,$udom,$stype,$usymb)=@_;
886: my $cid=$ENV{'request.course.id'};
887: if ($cid) {
888: my $now=time;
889: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
890: return &reply('put:'.$ENV{'course.'.$cid.'.domain'}.':'.
891: $ENV{'course.'.$cid.'.num'}.
892: ':nohist_expirationdates:'.
893: &escape($key).'='.$now,
894: $ENV{'course.'.$cid.'.home'})
895: }
896: return 'ok';
1.14 www 897: }
898:
1.109 www 899: # ----------------------------------------------------- Devalidate Spreadsheets
900:
901: sub devalidate {
902: my $symb=shift;
903: my $cid=$ENV{'request.course.id'};
904: if ($cid) {
905: my $key=$ENV{'user.name'}.':'.$ENV{'user.domain'}.':';
906: my $status=
1.133 albertel 907: &del('nohist_calculatedsheet',
908: [$key.'studentcalc'],
909: $ENV{'course.'.$cid.'.domain'},
910: $ENV{'course.'.$cid.'.num'})
911: .' '.
912: &del('nohist_calculatedsheets_'.$cid,
913: [$key.'assesscalc:'.$symb]);
1.109 www 914: unless ($status eq 'ok ok') {
915: &logthis('Could not devalidate spreadsheet '.
916: $ENV{'user.name'}.' at '.$ENV{'user.domain'}.' for '.
917: $symb.': '.$status);
1.133 albertel 918: }
1.109 www 919: }
920: }
921:
1.204 albertel 922: sub arrayref2str {
923: my ($arrayref) = @_;
924: my $result='_ARRAY_REF__';
925: foreach my $elem (@$arrayref) {
926: if (ref($elem) eq 'ARRAY') {
927: $result.=&escape(&arrayref2str($elem)).'&';
928: } elsif (ref($elem) eq 'HASH') {
929: $result.=&escape(&hashref2str($elem)).'&';
930: } elsif (ref($elem)) {
931: &logthis("Got a ref of ".(ref($elem))." skipping.");
932: } else {
933: $result.=&escape($elem).'&';
934: }
935: }
936: $result=~s/\&$//;
937: return $result;
938: }
939:
1.168 albertel 940: sub hash2str {
1.204 albertel 941: my (%hash) = @_;
942: my $result=&hashref2str(\%hash);
943: $result=~s/^_HASH_REF__//;
944: return $result;
945: }
946:
947: sub hashref2str {
948: my ($hashref)=@_;
949: my $result='_HASH_REF__';
950: foreach (keys(%$hashref)) {
951: if (ref($_) eq 'ARRAY') {
952: $result.=&escape(&arrayref2str($_)).'=';
953: } elsif (ref($_) eq 'HASH') {
954: $result.=&escape(&hashref2str($_)).'=';
955: } elsif (ref($_)) {
956: &logthis("Got a ref of ".(ref($_))." skipping.");
957: } else {
958: $result.=&escape($_).'=';
959: }
960:
961: if (ref($$hashref{$_}) eq 'ARRAY') {
962: $result.=&escape(&arrayref2str($$hashref{$_})).'&';
963: } elsif (ref($$hashref{$_}) eq 'HASH') {
964: $result.=&escape(&hashref2str($$hashref{$_})).'&';
965: } elsif (ref($$hashref{$_})) {
966: &logthis("Got a ref of ".(ref($$hashref{$_}))." skipping.");
967: } else {
968: $result.=&escape($$hashref{$_}).'&';
969: }
970: }
1.168 albertel 971: $result=~s/\&$//;
972: return $result;
973: }
974:
975: sub str2hash {
976: my ($string) = @_;
977: my %returnhash;
1.191 harris41 978: foreach (split(/\&/,$string)) {
1.168 albertel 979: my ($name,$value)=split(/\=/,$_);
1.204 albertel 980: $name=&unescape($name);
981: $value=&unescape($value);
982: if ($value =~ /^_HASH_REF__/) {
983: $value =~ s/^_HASH_REF__//;
984: my %hash=&str2hash($value);
985: $value=\%hash;
986: } elsif ($value =~ /^_ARRAY_REF__/) {
987: $value =~ s/^_ARRAY_REF__//;
988: my @array=&str2array($value);
989: $value=\@array;
990: }
991: $returnhash{$name}=$value;
992: }
993: return (%returnhash);
994: }
995:
996: sub str2array {
997: my ($string) = @_;
998: my @returnarray;
999: foreach my $value (split(/\&/,$string)) {
1000: $value=&unescape($value);
1001: if ($value =~ /^_HASH_REF__/) {
1002: $value =~ s/^_HASH_REF__//;
1003: my %hash=&str2hash($value);
1004: $value=\%hash;
1005: } elsif ($value =~ /^_ARRAY_REF__/) {
1006: $value =~ s/^_ARRAY_REF__//;
1007: my @array=&str2array($value);
1008: $value=\@array;
1009: }
1010: push(@returnarray,$value);
1.191 harris41 1011: }
1.204 albertel 1012: return (@returnarray);
1.168 albertel 1013: }
1014:
1.167 albertel 1015: # -------------------------------------------------------------------Temp Store
1016:
1.168 albertel 1017: sub tmpreset {
1018: my ($symb,$namespace,$domain,$stuname) = @_;
1019: if (!$symb) {
1020: $symb=&symbread();
1021: if (!$symb) { $symb= $ENV{'REQUEST_URI'}; }
1022: }
1023: $symb=escape($symb);
1024:
1025: if (!$namespace) { $namespace=$ENV{'request.state'}; }
1026: $namespace=~s/\//\_/g;
1027: $namespace=~s/\W//g;
1028:
1029: #FIXME needs to do something for /pub resources
1030: if (!$domain) { $domain=$ENV{'user.domain'}; }
1031: if (!$stuname) { $stuname=$ENV{'user.name'}; }
1032: my $path=$perlvar{'lonDaemons'}.'/tmp';
1033: my %hash;
1034: if (tie(%hash,'GDBM_File',
1035: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
1036: &GDBM_WRCREAT,0640)) {
1037: foreach my $key (keys %hash) {
1.180 albertel 1038: if ($key=~ /:$symb/) {
1.168 albertel 1039: delete($hash{$key});
1040: }
1041: }
1042: }
1043: }
1044:
1.167 albertel 1045: sub tmpstore {
1.168 albertel 1046: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
1047:
1048: if (!$symb) {
1049: $symb=&symbread();
1050: if (!$symb) { $symb= $ENV{'request.url'}; }
1051: }
1052: $symb=escape($symb);
1053:
1054: if (!$namespace) {
1055: # I don't think we would ever want to store this for a course.
1056: # it seems this will only be used if we don't have a course.
1057: #$namespace=$ENV{'request.course.id'};
1058: #if (!$namespace) {
1059: $namespace=$ENV{'request.state'};
1060: #}
1061: }
1062: $namespace=~s/\//\_/g;
1063: $namespace=~s/\W//g;
1064: #FIXME needs to do something for /pub resources
1065: if (!$domain) { $domain=$ENV{'user.domain'}; }
1066: if (!$stuname) { $stuname=$ENV{'user.name'}; }
1067: my $now=time;
1068: my %hash;
1069: my $path=$perlvar{'lonDaemons'}.'/tmp';
1070: if (tie(%hash,'GDBM_File',
1071: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
1072: &GDBM_WRCREAT,0640)) {
1073: $hash{"version:$symb"}++;
1074: my $version=$hash{"version:$symb"};
1075: my $allkeys='';
1076: foreach my $key (keys(%$storehash)) {
1077: $allkeys.=$key.':';
1078: $hash{"$version:$symb:$key"}=$$storehash{$key};
1079: }
1080: $hash{"$version:$symb:timestamp"}=$now;
1081: $allkeys.='timestamp';
1082: $hash{"$version:keys:$symb"}=$allkeys;
1083: if (untie(%hash)) {
1084: return 'ok';
1085: } else {
1086: return "error:$!";
1087: }
1088: } else {
1089: return "error:$!";
1090: }
1091: }
1.167 albertel 1092:
1.168 albertel 1093: # -----------------------------------------------------------------Temp Restore
1.167 albertel 1094:
1.168 albertel 1095: sub tmprestore {
1096: my ($symb,$namespace,$domain,$stuname) = @_;
1.167 albertel 1097:
1.168 albertel 1098: if (!$symb) {
1099: $symb=&symbread();
1100: if (!$symb) { $symb= $ENV{'request.url'}; }
1101: }
1102: $symb=escape($symb);
1103:
1104: if (!$namespace) { $namespace=$ENV{'request.state'}; }
1105: #FIXME needs to do something for /pub resources
1106: if (!$domain) { $domain=$ENV{'user.domain'}; }
1107: if (!$stuname) { $stuname=$ENV{'user.name'}; }
1108:
1109: my %returnhash;
1110: $namespace=~s/\//\_/g;
1111: $namespace=~s/\W//g;
1112: my %hash;
1113: my $path=$perlvar{'lonDaemons'}.'/tmp';
1114: if (tie(%hash,'GDBM_File',
1115: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
1116: &GDBM_READER,0640)) {
1117: my $version=$hash{"version:$symb"};
1118: $returnhash{'version'}=$version;
1119: my $scope;
1120: for ($scope=1;$scope<=$version;$scope++) {
1121: my $vkeys=$hash{"$scope:keys:$symb"};
1122: my @keys=split(/:/,$vkeys);
1123: my $key;
1124: $returnhash{"$scope:keys"}=$vkeys;
1125: foreach $key (@keys) {
1126: $returnhash{"$scope:$key"}=$hash{"$scope:$symb:$key"};
1127: $returnhash{"$key"}=$hash{"$scope:$symb:$key"};
1.167 albertel 1128: }
1129: }
1.168 albertel 1130: if (!(untie(%hash))) {
1131: return "error:$!";
1132: }
1133: } else {
1134: return "error:$!";
1135: }
1136: return %returnhash;
1.167 albertel 1137: }
1138:
1.9 www 1139: # ----------------------------------------------------------------------- Store
1140:
1141: sub store {
1.124 www 1142: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
1143: my $home='';
1144:
1.168 albertel 1145: if ($stuname) { $home=&homeserver($stuname,$domain); }
1.124 www 1146:
1.213 www 1147: $symb=&symbclean($symb);
1.122 albertel 1148: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
1.109 www 1149:
1150: &devalidate($symb);
1151:
1152: $symb=escape($symb);
1.187 www 1153: if (!$namespace) {
1154: unless ($namespace=$ENV{'request.course.id'}) {
1155: return '';
1156: }
1157: }
1.122 albertel 1158: if (!$domain) { $domain=$ENV{'user.domain'}; }
1159: if (!$stuname) { $stuname=$ENV{'user.name'}; }
1160: if (!$home) { $home=$ENV{'user.home'}; }
1.12 www 1161: my $namevalue='';
1.191 harris41 1162: foreach (keys %$storehash) {
1.122 albertel 1163: $namevalue.=escape($_).'='.escape($$storehash{$_}).'&';
1.191 harris41 1164: }
1.12 www 1165: $namevalue=~s/\&$//;
1.187 www 1166: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
1.124 www 1167: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
1.9 www 1168: }
1169:
1.47 www 1170: # -------------------------------------------------------------- Critical Store
1171:
1172: sub cstore {
1.124 www 1173: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
1174: my $home='';
1175:
1.168 albertel 1176: if ($stuname) { $home=&homeserver($stuname,$domain); }
1.124 www 1177:
1.213 www 1178: $symb=&symbclean($symb);
1.122 albertel 1179: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
1.109 www 1180:
1181: &devalidate($symb);
1182:
1183: $symb=escape($symb);
1.187 www 1184: if (!$namespace) {
1185: unless ($namespace=$ENV{'request.course.id'}) {
1186: return '';
1187: }
1188: }
1.122 albertel 1189: if (!$domain) { $domain=$ENV{'user.domain'}; }
1190: if (!$stuname) { $stuname=$ENV{'user.name'}; }
1191: if (!$home) { $home=$ENV{'user.home'}; }
1192:
1.47 www 1193: my $namevalue='';
1.191 harris41 1194: foreach (keys %$storehash) {
1.122 albertel 1195: $namevalue.=escape($_).'='.escape($$storehash{$_}).'&';
1.191 harris41 1196: }
1.47 www 1197: $namevalue=~s/\&$//;
1.187 www 1198: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
1.188 www 1199: return critical
1200: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
1.47 www 1201: }
1202:
1.9 www 1203: # --------------------------------------------------------------------- Restore
1204:
1205: sub restore {
1.124 www 1206: my ($symb,$namespace,$domain,$stuname) = @_;
1207: my $home='';
1208:
1.168 albertel 1209: if ($stuname) { $home=&homeserver($stuname,$domain); }
1.124 www 1210:
1.122 albertel 1211: if (!$symb) {
1212: unless ($symb=escape(&symbread())) { return ''; }
1213: } else {
1.213 www 1214: $symb=&escape(&symbclean($symb));
1.122 albertel 1215: }
1.188 www 1216: if (!$namespace) {
1217: unless ($namespace=$ENV{'request.course.id'}) {
1218: return '';
1219: }
1220: }
1.122 albertel 1221: if (!$domain) { $domain=$ENV{'user.domain'}; }
1222: if (!$stuname) { $stuname=$ENV{'user.name'}; }
1223: if (!$home) { $home=$ENV{'user.home'}; }
1224: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
1225:
1.12 www 1226: my %returnhash=();
1.191 harris41 1227: foreach (split(/\&/,$answer)) {
1.12 www 1228: my ($name,$value)=split(/\=/,$_);
1229: $returnhash{&unescape($name)}=&unescape($value);
1.191 harris41 1230: }
1.75 www 1231: my $version;
1232: for ($version=1;$version<=$returnhash{'version'};$version++) {
1.191 harris41 1233: foreach (split(/\:/,$returnhash{$version.':keys'})) {
1.75 www 1234: $returnhash{$_}=$returnhash{$version.':'.$_};
1.191 harris41 1235: }
1.75 www 1236: }
1.13 www 1237: return %returnhash;
1.34 www 1238: }
1239:
1240: # ---------------------------------------------------------- Course Description
1241:
1242: sub coursedescription {
1243: my $courseid=shift;
1244: $courseid=~s/^\///;
1.49 www 1245: $courseid=~s/\_/\//g;
1.34 www 1246: my ($cdomain,$cnum)=split(/\//,$courseid);
1.129 albertel 1247: my $chome=&homeserver($cnum,$cdomain);
1.34 www 1248: if ($chome ne 'no_host') {
1.129 albertel 1249: my %returnhash=&dump('environment',$cdomain,$cnum);
1250: if (!exists($returnhash{'con_lost'})) {
1.96 www 1251: my $normalid=$cdomain.'_'.$cnum;
1.53 www 1252: my %envhash=();
1.129 albertel 1253: $returnhash{'home'}= $chome;
1254: $returnhash{'domain'} = $cdomain;
1255: $returnhash{'num'} = $cnum;
1.130 albertel 1256: while (my ($name,$value) = each %returnhash) {
1.53 www 1257: $envhash{'course.'.$normalid.'.'.$name}=$value;
1.129 albertel 1258: }
1.34 www 1259: $returnhash{'url'}='/res/'.declutter($returnhash{'url'});
1260: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
1.38 www 1261: $ENV{'user.name'}.'_'.$cdomain.'_'.$cnum;
1.54 www 1262: $envhash{'course.'.$normalid.'.last_cache'}=time;
1.60 www 1263: $envhash{'course.'.$normalid.'.home'}=$chome;
1264: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
1265: $envhash{'course.'.$normalid.'.num'}=$cnum;
1.53 www 1266: &appenv(%envhash);
1.34 www 1267: return %returnhash;
1268: }
1269: }
1270: return ();
1.9 www 1271: }
1.1 albertel 1272:
1.103 harris41 1273: # -------------------------------------------------------- Get user privileges
1.11 www 1274:
1275: sub rolesinit {
1276: my ($domain,$username,$authhost)=@_;
1277: my $rolesdump=reply("dump:$domain:$username:roles",$authhost);
1.12 www 1278: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return ''; }
1.11 www 1279: my %allroles=();
1280: my %thesepriv=();
1281: my $now=time;
1.21 www 1282: my $userroles="user.login.time=$now\n";
1.11 www 1283: my $thesestr;
1284:
1285: if ($rolesdump ne '') {
1.191 harris41 1286: foreach (split(/&/,$rolesdump)) {
1.21 www 1287: if ($_!~/^rolesdef\&/) {
1.11 www 1288: my ($area,$role)=split(/=/,$_);
1.21 www 1289: $area=~s/\_\w\w$//;
1.11 www 1290: my ($trole,$tend,$tstart)=split(/_/,$role);
1.21 www 1291: $userroles.='user.role.'.$trole.'.'.$area.'='.
1292: $tstart.'.'.$tend."\n";
1.11 www 1293: if ($tend!=0) {
1294: if ($tend<$now) {
1295: $trole='';
1296: }
1297: }
1298: if ($tstart!=0) {
1299: if ($tstart>$now) {
1300: $trole='';
1301: }
1302: }
1303: if (($area ne '') && ($trole ne '')) {
1.50 www 1304: my $spec=$trole.'.'.$area;
1.12 www 1305: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
1306: if ($trole =~ /^cr\//) {
1307: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
1308: my $homsvr=homeserver($rauthor,$rdomain);
1309: if ($hostname{$homsvr} ne '') {
1310: my $roledef=
1.21 www 1311: reply("get:$rdomain:$rauthor:roles:rolesdef_$rrole",
1.12 www 1312: $homsvr);
1313: if (($roledef ne 'con_lost') && ($roledef ne '')) {
1314: my ($syspriv,$dompriv,$coursepriv)=
1.21 www 1315: split(/\_/,unescape($roledef));
1.50 www 1316: $allroles{'cm./'}.=':'.$syspriv;
1317: $allroles{$spec.'./'}.=':'.$syspriv;
1.12 www 1318: if ($tdomain ne '') {
1.50 www 1319: $allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
1320: $allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
1.12 www 1321: if ($trest ne '') {
1.50 www 1322: $allroles{'cm.'.$area}.=':'.$coursepriv;
1323: $allroles{$spec.'.'.$area}.=':'.$coursepriv;
1.12 www 1324: }
1325: }
1326: }
1.11 www 1327: }
1.12 www 1328: } else {
1.50 www 1329: $allroles{'cm./'}.=':'.$pr{$trole.':s'};
1330: $allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
1.12 www 1331: if ($tdomain ne '') {
1.50 www 1332: $allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
1333: $allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
1.12 www 1334: if ($trest ne '') {
1.50 www 1335: $allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
1336: $allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
1.12 www 1337: }
1338: }
1.11 www 1339: }
1.12 www 1340: }
1341: }
1.191 harris41 1342: }
1.125 www 1343: my $adv=0;
1.128 www 1344: my $author=0;
1.191 harris41 1345: foreach (keys %allroles) {
1.11 www 1346: %thesepriv=();
1.146 www 1347: if (($_!~/^st/) && ($_!~/^ta/) && ($_!~/^cm/)) { $adv=1; }
1.128 www 1348: if (($_=~/^au/) || ($_=~/^ca/)) { $author=1; }
1.191 harris41 1349: foreach (split(/:/,$allroles{$_})) {
1.11 www 1350: if ($_ ne '') {
1.103 harris41 1351: my ($privilege,$restrictions)=split(/&/,$_);
1.11 www 1352: if ($restrictions eq '') {
1.103 harris41 1353: $thesepriv{$privilege}='F';
1.11 www 1354: } else {
1.103 harris41 1355: if ($thesepriv{$privilege} ne 'F') {
1356: $thesepriv{$privilege}.=$restrictions;
1.11 www 1357: }
1358: }
1359: }
1.191 harris41 1360: }
1.11 www 1361: $thesestr='';
1.191 harris41 1362: foreach (keys %thesepriv) { $thesestr.=':'.$_.'&'.$thesepriv{$_}; }
1.11 www 1363: $userroles.='user.priv.'.$_.'='.$thesestr."\n";
1.191 harris41 1364: }
1.128 www 1365: $userroles.='user.adv='.$adv."\n".
1366: 'user.author='.$author."\n";
1.126 www 1367: $ENV{'user.adv'}=$adv;
1.11 www 1368: }
1369: return $userroles;
1370: }
1371:
1.12 www 1372: # --------------------------------------------------------------- get interface
1373:
1374: sub get {
1.131 albertel 1375: my ($namespace,$storearr,$udomain,$uname)=@_;
1.12 www 1376: my $items='';
1.191 harris41 1377: foreach (@$storearr) {
1.12 www 1378: $items.=escape($_).'&';
1.191 harris41 1379: }
1.12 www 1380: $items=~s/\&$//;
1.131 albertel 1381: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
1382: if (!$uname) { $uname=$ENV{'user.name'}; }
1383: my $uhome=&homeserver($uname,$udomain);
1384:
1.133 albertel 1385: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
1.15 www 1386: my @pairs=split(/\&/,$rep);
1387: my %returnhash=();
1.42 www 1388: my $i=0;
1.191 harris41 1389: foreach (@$storearr) {
1.42 www 1390: $returnhash{$_}=unescape($pairs[$i]);
1391: $i++;
1.191 harris41 1392: }
1.15 www 1393: return %returnhash;
1.27 www 1394: }
1395:
1396: # --------------------------------------------------------------- del interface
1397:
1398: sub del {
1.133 albertel 1399: my ($namespace,$storearr,$udomain,$uname)=@_;
1.27 www 1400: my $items='';
1.191 harris41 1401: foreach (@$storearr) {
1.27 www 1402: $items.=escape($_).'&';
1.191 harris41 1403: }
1.27 www 1404: $items=~s/\&$//;
1.133 albertel 1405: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
1406: if (!$uname) { $uname=$ENV{'user.name'}; }
1407: my $uhome=&homeserver($uname,$udomain);
1408:
1409: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
1.15 www 1410: }
1411:
1412: # -------------------------------------------------------------- dump interface
1413:
1414: sub dump {
1.193 www 1415: my ($namespace,$udomain,$uname,$regexp)=@_;
1.129 albertel 1416: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
1417: if (!$uname) { $uname=$ENV{'user.name'}; }
1418: my $uhome=&homeserver($uname,$udomain);
1.193 www 1419: if ($regexp) {
1420: $regexp=&escape($regexp);
1421: } else {
1422: $regexp='.';
1423: }
1424: my $rep=reply("dump:$udomain:$uname:$namespace:$regexp",$uhome);
1.12 www 1425: my @pairs=split(/\&/,$rep);
1426: my %returnhash=();
1.191 harris41 1427: foreach (@pairs) {
1.12 www 1428: my ($key,$value)=split(/=/,$_);
1.29 www 1429: $returnhash{unescape($key)}=unescape($value);
1.191 harris41 1430: }
1.12 www 1431: return %returnhash;
1432: }
1433:
1434: # --------------------------------------------------------------- put interface
1435:
1436: sub put {
1.134 albertel 1437: my ($namespace,$storehash,$udomain,$uname)=@_;
1438: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
1439: if (!$uname) { $uname=$ENV{'user.name'}; }
1440: my $uhome=&homeserver($uname,$udomain);
1.12 www 1441: my $items='';
1.191 harris41 1442: foreach (keys %$storehash) {
1.134 albertel 1443: $items.=&escape($_).'='.&escape($$storehash{$_}).'&';
1.191 harris41 1444: }
1.12 www 1445: $items=~s/\&$//;
1.134 albertel 1446: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
1.47 www 1447: }
1448:
1449: # ------------------------------------------------------ critical put interface
1450:
1451: sub cput {
1.134 albertel 1452: my ($namespace,$storehash,$udomain,$uname)=@_;
1453: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
1454: if (!$uname) { $uname=$ENV{'user.name'}; }
1455: my $uhome=&homeserver($uname,$udomain);
1.47 www 1456: my $items='';
1.191 harris41 1457: foreach (keys %$storehash) {
1.134 albertel 1458: $items.=escape($_).'='.escape($$storehash{$_}).'&';
1.191 harris41 1459: }
1.47 www 1460: $items=~s/\&$//;
1.134 albertel 1461: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
1.12 www 1462: }
1463:
1464: # -------------------------------------------------------------- eget interface
1465:
1466: sub eget {
1.133 albertel 1467: my ($namespace,$storearr,$udomain,$uname)=@_;
1.12 www 1468: my $items='';
1.191 harris41 1469: foreach (@$storearr) {
1.12 www 1470: $items.=escape($_).'&';
1.191 harris41 1471: }
1.12 www 1472: $items=~s/\&$//;
1.133 albertel 1473: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
1474: if (!$uname) { $uname=$ENV{'user.name'}; }
1475: my $uhome=&homeserver($uname,$udomain);
1476: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
1.12 www 1477: my @pairs=split(/\&/,$rep);
1478: my %returnhash=();
1.42 www 1479: my $i=0;
1.191 harris41 1480: foreach (@$storearr) {
1.42 www 1481: $returnhash{$_}=unescape($pairs[$i]);
1482: $i++;
1.191 harris41 1483: }
1.12 www 1484: return %returnhash;
1485: }
1486:
1.103 harris41 1487: # ------------------------------------------------- Check for a user privilege
1.12 www 1488:
1489: sub allowed {
1490: my ($priv,$uri)=@_;
1.152 www 1491:
1492: my $orguri=$uri;
1.52 www 1493: $uri=&declutter($uri);
1.29 www 1494:
1.54 www 1495: # Free bre access to adm and meta resources
1.29 www 1496:
1.54 www 1497: if ((($uri=~/^adm\//) || ($uri=~/\.meta$/)) && ($priv eq 'bre')) {
1.14 www 1498: return 'F';
1.159 www 1499: }
1500:
1501: # Free bre to public access
1502:
1503: if ($priv eq 'bre') {
1.238 www 1504: my $copyright=&metadata($uri,'copyright');
1505: if ($copyright eq 'public') { return 'F'; }
1506: if ($copyright eq 'priv') {
1507: $uri=~/([^\/]+)\/([^\/]+)\//;
1508: unless (($ENV{'user.name'} eq $2) && ($ENV{'user.domain'} eq $1)) {
1509: return '';
1510: }
1511: }
1512: if ($copyright eq 'domain') {
1513: $uri=~/([^\/]+)\/([^\/]+)\//;
1514: unless (($ENV{'user.domain'} eq $1) ||
1515: ($ENV{'course.'.$ENV{'request.course.id'}.'.domain'} eq $1)) {
1516: return '';
1517: }
1518: }
1.14 www 1519: }
1.29 www 1520:
1.52 www 1521: my $thisallowed='';
1522: my $statecond=0;
1523: my $courseprivid='';
1524:
1525: # Course
1526:
1527: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'}=~/$priv\&([^\:]*)/) {
1528: $thisallowed.=$1;
1529: }
1.29 www 1530:
1.52 www 1531: # Domain
1532:
1533: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
1534: =~/$priv\&([^\:]*)/) {
1.12 www 1535: $thisallowed.=$1;
1536: }
1.52 www 1537:
1538: # Course: uri itself is a course
1.66 www 1539: my $courseuri=$uri;
1540: $courseuri=~s/\_(\d)/\/$1/;
1.83 www 1541: $courseuri=~s/^([^\/])/\/$1/;
1.81 www 1542:
1.83 www 1543: if ($ENV{'user.priv.'.$ENV{'request.role'}.'.'.$courseuri}
1.52 www 1544: =~/$priv\&([^\:]*)/) {
1.12 www 1545: $thisallowed.=$1;
1546: }
1.29 www 1547:
1.52 www 1548: # Full access at system, domain or course-wide level? Exit.
1.29 www 1549:
1550: if ($thisallowed=~/F/) {
1551: return 'F';
1552: }
1553:
1.52 www 1554: # If this is generating or modifying users, exit with special codes
1.29 www 1555:
1.166 www 1556: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:'=~/\:$priv\:/) {
1.52 www 1557: return $thisallowed;
1558: }
1559: #
1.103 harris41 1560: # Gathered so far: system, domain and course wide privileges
1.52 www 1561: #
1562: # Course: See if uri or referer is an individual resource that is part of
1563: # the course
1564:
1565: if ($ENV{'request.course.id'}) {
1.232 www 1566:
1.52 www 1567: $courseprivid=$ENV{'request.course.id'};
1568: if ($ENV{'request.course.sec'}) {
1569: $courseprivid.='/'.$ENV{'request.course.sec'};
1570: }
1571: $courseprivid=~s/\_/\//;
1572: my $checkreferer=1;
1.232 www 1573: my ($match,$cond)=&is_on_map($uri);
1574: if ($match) {
1575: $statecond=$cond;
1.52 www 1576: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.$courseprivid}
1577: =~/$priv\&([^\:]*)/) {
1578: $thisallowed.=$1;
1579: $checkreferer=0;
1580: }
1.29 www 1581: }
1.83 www 1582:
1.148 www 1583: if ($checkreferer) {
1.152 www 1584: my $refuri=$ENV{'httpref.'.$orguri};
1.148 www 1585: unless ($refuri) {
1.191 harris41 1586: foreach (keys %ENV) {
1.148 www 1587: if ($_=~/^httpref\..*\*/) {
1588: my $pattern=$_;
1.156 www 1589: $pattern=~s/^httpref\.\/res\///;
1.148 www 1590: $pattern=~s/\*/\[\^\/\]\+/g;
1591: $pattern=~s/\//\\\//g;
1.152 www 1592: if ($orguri=~/$pattern/) {
1.148 www 1593: $refuri=$ENV{$_};
1594: }
1595: }
1.191 harris41 1596: }
1.148 www 1597: }
1.232 www 1598:
1.148 www 1599: if ($refuri) {
1.152 www 1600: $refuri=&declutter($refuri);
1.232 www 1601: my ($match,$cond)=&is_on_map($refuri);
1602: if ($match) {
1603: my $refstatecond=$cond;
1.52 www 1604: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.$courseprivid}
1605: =~/$priv\&([^\:]*)/) {
1606: $thisallowed.=$1;
1.53 www 1607: $uri=$refuri;
1608: $statecond=$refstatecond;
1.52 www 1609: }
1610: }
1.148 www 1611: }
1.29 www 1612: }
1.52 www 1613: }
1.29 www 1614:
1.52 www 1615: #
1.103 harris41 1616: # Gathered now: all privileges that could apply, and condition number
1.52 www 1617: #
1618: #
1619: # Full or no access?
1620: #
1.29 www 1621:
1.52 www 1622: if ($thisallowed=~/F/) {
1623: return 'F';
1624: }
1.29 www 1625:
1.52 www 1626: unless ($thisallowed) {
1627: return '';
1628: }
1.29 www 1629:
1.52 www 1630: # Restrictions exist, deal with them
1631: #
1632: # C:according to course preferences
1633: # R:according to resource settings
1634: # L:unless locked
1635: # X:according to user session state
1636: #
1637:
1638: # Possibly locked functionality, check all courses
1.54 www 1639: # Locks might take effect only after 10 minutes cache expiration for other
1640: # courses, and 2 minutes for current course
1.52 www 1641:
1642: my $envkey;
1643: if ($thisallowed=~/L/) {
1644: foreach $envkey (keys %ENV) {
1.54 www 1645: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
1646: my $courseid=$2;
1647: my $roleid=$1.'.'.$2;
1.92 www 1648: $courseid=~s/^\///;
1.54 www 1649: my $expiretime=600;
1650: if ($ENV{'request.role'} eq $roleid) {
1651: $expiretime=120;
1652: }
1653: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
1654: my $prefix='course.'.$cdom.'_'.$cnum.'.';
1655: if ((time-$ENV{$prefix.'last_cache'})>$expiretime) {
1656: &coursedescription($courseid);
1657: }
1658: if (($ENV{$prefix.'res.'.$uri.'.lock.sections'}=~/\,$csec\,/)
1659: || ($ENV{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
1660: if ($ENV{$prefix.'res.'.$uri.'.lock.expire'}>time) {
1.57 www 1661: &log($ENV{'user.domain'},$ENV{'user.name'},
1.239 www 1662: $ENV{'user.home'},
1.57 www 1663: 'Locked by res: '.$priv.' for '.$uri.' due to '.
1.52 www 1664: $cdom.'/'.$cnum.'/'.$csec.' expire '.
1.54 www 1665: $ENV{$prefix.'priv.'.$priv.'.lock.expire'});
1.52 www 1666: return '';
1667: }
1668: }
1.54 www 1669: if (($ENV{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,$csec\,/)
1670: || ($ENV{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
1671: if ($ENV{'priv.'.$priv.'.lock.expire'}>time) {
1.57 www 1672: &log($ENV{'user.domain'},$ENV{'user.name'},
1.239 www 1673: $ENV{'user.home'},
1.57 www 1674: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
1.52 www 1675: $cdom.'/'.$cnum.'/'.$csec.' expire '.
1.54 www 1676: $ENV{$prefix.'priv.'.$priv.'.lock.expire'});
1.52 www 1677: return '';
1678: }
1679: }
1680: }
1.29 www 1681: }
1.52 www 1682: }
1683:
1684: #
1685: # Rest of the restrictions depend on selected course
1686: #
1687:
1688: unless ($ENV{'request.course.id'}) {
1689: return '1';
1690: }
1.29 www 1691:
1.52 www 1692: #
1693: # Now user is definitely in a course
1694: #
1.53 www 1695:
1696:
1697: # Course preferences
1698:
1699: if ($thisallowed=~/C/) {
1.54 www 1700: my $rolecode=(split(/\./,$ENV{'request.role'}))[0];
1.237 www 1701: my $unamedom=$ENV{'user.name'}.':'.$ENV{'user.domain'};
1.54 www 1702: if ($ENV{'course.'.$ENV{'request.course.id'}.'.'.$priv.'.roles.denied'}
1.194 www 1703: =~/$rolecode/) {
1.57 www 1704: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
1705: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
1.237 www 1706: $ENV{'request.course.id'});
1707: return '';
1708: }
1709:
1710: if ($ENV{'course.'.$ENV{'request.course.id'}.'.'.$priv.'.users.denied'}
1711: =~/$unamedom/) {
1712: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
1713: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
1.54 www 1714: $ENV{'request.course.id'});
1715: return '';
1716: }
1.53 www 1717: }
1718:
1719: # Resource preferences
1720:
1721: if ($thisallowed=~/R/) {
1.54 www 1722: my $rolecode=(split(/\./,$ENV{'request.role'}))[0];
1723: my $filename=$perlvar{'lonDocRoot'}.'/res/'.$uri.'.meta';
1724: if (-e $filename) {
1725: my @content;
1726: {
1727: my $fh=Apache::File->new($filename);
1728: @content=<$fh>;
1729: }
1730: if (join('',@content)=~
1731: /\<roledeny[^\>]*\>[^\<]*$rolecode[^\<]*\<\/roledeny\>/) {
1.57 www 1732: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
1733: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
1.54 www 1734: return '';
1735:
1736: }
1737: }
1.53 www 1738: }
1.30 www 1739:
1.52 www 1740: # Restricted by state?
1.30 www 1741:
1.52 www 1742: if ($thisallowed=~/X/) {
1743: if (&condval($statecond)) {
1744: return '2';
1745: } else {
1746: return '';
1747: }
1748: }
1.30 www 1749:
1.52 www 1750: return 'F';
1.232 www 1751: }
1752:
1753: # --------------------------------------------------- Is a resource on the map?
1754:
1755: sub is_on_map {
1756: my $uri=&declutter(shift);
1757: my @uriparts=split(/\//,$uri);
1758: my $filename=$uriparts[$#uriparts];
1759: my $pathname=$uri;
1760: $pathname=~s/\/$filename$//;
1761: my $match=($ENV{'acc.res.'.$ENV{'request.course.id'}.'.'.$pathname}=~
1762: /\&$filename\:([\d\|]+)\&/);
1763: if ($match) {
1764: return (1,$1);
1765: } else {
1766: return (0,0);
1767: }
1.12 www 1768: }
1769:
1770: # ----------------------------------------------------------------- Define Role
1771:
1772: sub definerole {
1773: if (allowed('mcr','/')) {
1774: my ($rolename,$sysrole,$domrole,$courole)=@_;
1.191 harris41 1775: foreach (split('/',$sysrole)) {
1.21 www 1776: my ($crole,$cqual)=split(/\&/,$_);
1777: if ($pr{'cr:s'}!~/$crole/) { return "refused:s:$crole"; }
1778: if ($pr{'cr:s'}=~/$crole\&/) {
1779: if ($pr{'cr:s'}!~/$crole\&\w*$cqual/) {
1780: return "refused:s:$crole&$cqual";
1781: }
1782: }
1.191 harris41 1783: }
1784: foreach (split('/',$domrole)) {
1.21 www 1785: my ($crole,$cqual)=split(/\&/,$_);
1786: if ($pr{'cr:d'}!~/$crole/) { return "refused:d:$crole"; }
1787: if ($pr{'cr:d'}=~/$crole\&/) {
1788: if ($pr{'cr:d'}!~/$crole\&\w*$cqual/) {
1789: return "refused:d:$crole&$cqual";
1790: }
1791: }
1.191 harris41 1792: }
1793: foreach (split('/',$courole)) {
1.21 www 1794: my ($crole,$cqual)=split(/\&/,$_);
1795: if ($pr{'cr:c'}!~/$crole/) { return "refused:c:$crole"; }
1796: if ($pr{'cr:c'}=~/$crole\&/) {
1797: if ($pr{'cr:c'}!~/$crole\&\w*$cqual/) {
1798: return "refused:c:$crole&$cqual";
1799: }
1800: }
1.191 harris41 1801: }
1.12 www 1802: my $command="encrypt:rolesput:$ENV{'user.domain'}:$ENV{'user.name'}:".
1803: "$ENV{'user.domain'}:$ENV{'user.name'}:".
1.21 www 1804: "rolesdef_$rolename=".
1805: escape($sysrole.'_'.$domrole.'_'.$courole);
1.12 www 1806: return reply($command,$ENV{'user.home'});
1807: } else {
1808: return 'refused';
1809: }
1.105 harris41 1810: }
1811:
1812: # ---------------- Make a metadata query against the network of library servers
1813:
1814: sub metadata_query {
1.116 harris41 1815: my ($query,$custom,$customshow)=@_;
1.120 harris41 1816: my %rhash;
1.123 harris41 1817: for my $server (keys %libserv) {
1.118 harris41 1818: unless ($custom or $customshow) {
1819: my $reply=&reply("querysend:".&escape($query),$server);
1820: $rhash{$server}=$reply;
1821: }
1822: else {
1823: my $reply=&reply("querysend:".&escape($query).':'.
1824: &escape($custom).':'.&escape($customshow),
1825: $server);
1826: $rhash{$server}=$reply;
1827: }
1.112 harris41 1828: }
1.118 harris41 1829: return \%rhash;
1.240 ! www 1830: }
! 1831:
! 1832: # ----------------------------------------- Send log queries and wait for reply
! 1833:
! 1834: sub log_query {
! 1835: my ($uname,$udom,$query,%filters)=@_;
! 1836: my $uhome=&homeserver($uname,$udom);
! 1837: if ($uhome eq 'no_host') { return 'error: no_host'; }
! 1838: my $uhost=$hostname{$uhome};
! 1839: my $command=&escape(join('&',map{$_.'='.$filters{$_}} keys %filters));
! 1840: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
! 1841: $uhome);
! 1842: unless ($queryid=~/^$uhost\_/) { return 'error: '.$queryid; }
! 1843: my $replyfile=$perlvar{'lonDaemons'}.'/tmp/'.$queryid;
! 1844: my $reply='';
! 1845: for (1..100) {
! 1846: sleep 2;
! 1847: &logthis('wait');
! 1848: if (-e $replyfile.'.end') {
! 1849: if (my $fh=Apache::File->new($replyfile)) {
! 1850: $reply.=<$fh>;
! 1851: $fh->close;
! 1852: } else { return 'error: reply_file_error'; }
! 1853: }
! 1854: return &unescape($reply);
! 1855: }
! 1856: return 'error: timeout';
! 1857: }
! 1858:
! 1859: sub courselog_query {
! 1860: my (%filters)=@_;
! 1861: unless ($ENV{'request.course.id'}) { return 'no_course'; }
! 1862: my $cname=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
! 1863: my $cdom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
! 1864: return &log_query($cname,$cdom,'courselog',%filters);
! 1865:
! 1866: }
! 1867:
! 1868: sub userlog_query {
! 1869: my ($uname,$udom,%filters)=@_;
! 1870: return &log_query($uname,$udom,'userlog',%filters);
1.12 www 1871: }
1872:
1873: # ------------------------------------------------------------------ Plain Text
1874:
1875: sub plaintext {
1.22 www 1876: my $short=shift;
1877: return $prp{$short};
1.12 www 1878: }
1879:
1880: # ----------------------------------------------------------------- Assign Role
1881:
1882: sub assignrole {
1.21 www 1883: my ($udom,$uname,$url,$role,$end,$start)=@_;
1884: my $mrole;
1885: if ($role =~ /^cr\//) {
1.104 www 1886: unless (&allowed('ccr',$url)) {
1887: &logthis('Refused custom assignrole: '.
1888: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
1889: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
1890: return 'refused';
1891: }
1.21 www 1892: $mrole='cr';
1893: } else {
1.82 www 1894: my $cwosec=$url;
1.83 www 1895: $cwosec=~s/^\/(\w+)\/(\w+)\/.*/$1\/$2/;
1.104 www 1896: unless (&allowed('c'.$role,$cwosec)) {
1897: &logthis('Refused assignrole: '.
1898: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
1899: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
1900: return 'refused';
1901: }
1.21 www 1902: $mrole=$role;
1903: }
1904: my $command="encrypt:rolesput:$ENV{'user.domain'}:$ENV{'user.name'}:".
1905: "$udom:$uname:$url".'_'."$mrole=$role";
1.81 www 1906: if ($end) { $command.='_'.$end; }
1.21 www 1907: if ($start) {
1908: if ($end) {
1.81 www 1909: $command.='_'.$start;
1.21 www 1910: } else {
1.81 www 1911: $command.='_0_'.$start;
1.21 www 1912: }
1913: }
1914: return &reply($command,&homeserver($uname,$udom));
1.169 harris41 1915: }
1916:
1917: # -------------------------------------------------- Modify user authentication
1.197 www 1918: # Overrides without validation
1919:
1.169 harris41 1920: sub modifyuserauth {
1921: my ($udom,$uname,$umode,$upass)=@_;
1922: my $uhome=&homeserver($uname,$udom);
1.197 www 1923: unless (&allowed('mau',$udom)) { return 'refused'; }
1924: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
1.169 harris41 1925: $umode.' by '.$ENV{'user.name'}.' at '.$ENV{'user.domain'});
1926: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
1927: &escape($upass),$uhome);
1.197 www 1928: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.home'},
1929: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
1930: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
1931: &log($udom,,$uname,$uhome,
1932: 'Authentication changed by '.$ENV{'user.domain'}.', '.
1933: $ENV{'user.name'}.', '.$umode.
1934: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
1.169 harris41 1935: unless ($reply eq 'ok') {
1.197 www 1936: &logthis('Authentication mode error: '.$reply);
1.169 harris41 1937: return 'error: '.$reply;
1938: }
1.170 harris41 1939: return 'ok';
1.80 www 1940: }
1941:
1.81 www 1942: # --------------------------------------------------------------- Modify a user
1.80 www 1943:
1.81 www 1944: sub modifyuser {
1.206 matthew 1945: my ($udom, $uname, $uid,
1946: $umode, $upass, $first,
1947: $middle, $last, $gene,
1948: $forceid, $desiredhome)=@_;
1.198 www 1949: $udom=~s/\W//g;
1950: $uname=~s/\W//g;
1.81 www 1951: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
1.80 www 1952: $umode.', '.$first.', '.$middle.', '.
1.206 matthew 1953: $last.', '.$gene.'(forceid: '.$forceid.')'.
1954: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
1955: ' desiredhome not specified').
1956: ' by '.$ENV{'user.name'}.' at '.$ENV{'user.domain'});
1.230 stredwic 1957: my $uhome=&homeserver($uname,$udom,'true');
1.80 www 1958: # ----------------------------------------------------------------- Create User
1.81 www 1959: if (($uhome eq 'no_host') && ($umode) && ($upass)) {
1.80 www 1960: my $unhome='';
1.209 matthew 1961: if (defined($desiredhome) && $hostdom{$desiredhome} eq $udom) {
1962: $unhome = $desiredhome;
1963: } elsif($ENV{'course.'.$ENV{'request.course.id'}.'.domain'} eq $udom) {
1.80 www 1964: $unhome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
1.209 matthew 1965: } else { # load balancing routine for determining $unhome
1.80 www 1966: my $tryserver;
1.81 www 1967: my $loadm=10000000;
1.80 www 1968: foreach $tryserver (keys %libserv) {
1969: if ($hostdom{$tryserver} eq $udom) {
1970: my $answer=reply('load',$tryserver);
1971: if (($answer=~/\d+/) && ($answer<$loadm)) {
1972: $loadm=$answer;
1973: $unhome=$tryserver;
1974: }
1975: }
1976: }
1977: }
1978: if (($unhome eq '') || ($unhome eq 'no_host')) {
1.206 matthew 1979: return 'error: unable to find a home server for '.$uname.
1980: ' in domain '.$udom;
1.80 www 1981: }
1982: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
1983: &escape($upass),$unhome);
1984: unless ($reply eq 'ok') {
1985: return 'error: '.$reply;
1986: }
1.230 stredwic 1987: $uhome=&homeserver($uname,$udom,'true');
1.80 www 1988: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
1989: return 'error: verify home';
1990: }
1.209 matthew 1991: } # End of creation of new user
1.80 www 1992: # ---------------------------------------------------------------------- Add ID
1993: if ($uid) {
1994: $uid=~tr/A-Z/a-z/;
1995: my %uidhash=&idrget($udom,$uname);
1.196 www 1996: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
1997: && (!$forceid)) {
1.80 www 1998: unless ($uid eq $uidhash{$uname}) {
1999: return 'error: mismatch '.$uidhash{$uname}.' versus '.$uid;
2000: }
2001: } else {
2002: &idput($udom,($uname => $uid));
2003: }
2004: }
2005: # -------------------------------------------------------------- Add names, etc
1.134 albertel 2006: my %names=&get('environment',
2007: ['firstname','middlename','lastname','generation'],
2008: $udom,$uname);
1.207 albertel 2009: if ($names{'firstname'} =~ m/^error:.*/) { %names=(); }
1.134 albertel 2010: if ($first) { $names{'firstname'} = $first; }
2011: if ($middle) { $names{'middlename'} = $middle; }
2012: if ($last) { $names{'lastname'} = $last; }
2013: if ($gene) { $names{'generation'} = $gene; }
2014: my $reply = &put('environment', \%names, $udom,$uname);
2015: if ($reply ne 'ok') { return 'error: '.$reply; }
1.81 www 2016: &logthis('Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
1.80 www 2017: $umode.', '.$first.', '.$middle.', '.
2018: $last.', '.$gene.' by '.
2019: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
1.134 albertel 2020: return 'ok';
1.80 www 2021: }
2022:
1.81 www 2023: # -------------------------------------------------------------- Modify student
1.80 www 2024:
1.81 www 2025: sub modifystudent {
2026: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
1.209 matthew 2027: $end,$start,$forceid,$desiredhome)=@_;
1.81 www 2028: my $cid='';
2029: unless ($cid=$ENV{'request.course.id'}) {
1.80 www 2030: return 'not_in_class';
2031: }
2032: # --------------------------------------------------------------- Make the user
1.81 www 2033: my $reply=&modifyuser
1.209 matthew 2034: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
2035: $desiredhome);
1.80 www 2036: unless ($reply eq 'ok') { return $reply; }
1.81 www 2037: my $uhome=&homeserver($uname,$udom);
2038: if (($uhome eq '') || ($uhome eq 'no_host')) {
2039: return 'error: no such user';
2040: }
1.80 www 2041: # -------------------------------------------------- Add student to course list
1.160 www 2042: $reply=critical('put:'.$ENV{'course.'.$cid.'.domain'}.':'.
1.81 www 2043: $ENV{'course.'.$cid.'.num'}.':classlist:'.
2044: &escape($uname.':'.$udom).'='.
2045: &escape($end.':'.$start),
2046: $ENV{'course.'.$cid.'.home'});
2047: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
2048: return 'error: '.$reply;
2049: }
1.80 www 2050: # ---------------------------------------------------- Add student role to user
1.83 www 2051: my $uurl='/'.$cid;
1.81 www 2052: $uurl=~s/\_/\//g;
2053: if ($usec) {
2054: $uurl.='/'.$usec;
2055: }
2056: return &assignrole($udom,$uname,$uurl,'st',$end,$start);
1.21 www 2057: }
2058:
1.84 www 2059: # ------------------------------------------------- Write to course preferences
2060:
2061: sub writecoursepref {
2062: my ($courseid,%prefs)=@_;
2063: $courseid=~s/^\///;
2064: $courseid=~s/\_/\//g;
2065: my ($cdomain,$cnum)=split(/\//,$courseid);
2066: my $chome=homeserver($cnum,$cdomain);
2067: if (($chome eq '') || ($chome eq 'no_host')) {
2068: return 'error: no such course';
2069: }
2070: my $cstring='';
1.191 harris41 2071: foreach (keys %prefs) {
1.84 www 2072: $cstring.=escape($_).'='.escape($prefs{$_}).'&';
1.191 harris41 2073: }
1.84 www 2074: $cstring=~s/\&$//;
2075: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
2076: }
2077:
2078: # ---------------------------------------------------------- Make/modify course
2079:
2080: sub createcourse {
2081: my ($udom,$description,$url)=@_;
2082: $url=&declutter($url);
2083: my $cid='';
2084: unless (&allowed('ccc',$ENV{'user.domain'})) {
2085: return 'refused';
2086: }
2087: unless ($udom eq $ENV{'user.domain'}) {
2088: return 'refused';
2089: }
2090: # ------------------------------------------------------------------- Create ID
2091: my $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
2092: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
2093: # ----------------------------------------------- Make sure that does not exist
1.230 stredwic 2094: my $uhome=&homeserver($uname,$udom,'true');
1.84 www 2095: unless (($uhome eq '') || ($uhome eq 'no_host')) {
2096: $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
2097: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
1.230 stredwic 2098: $uhome=&homeserver($uname,$udom,'true');
1.84 www 2099: unless (($uhome eq '') || ($uhome eq 'no_host')) {
2100: return 'error: unable to generate unique course-ID';
2101: }
2102: }
2103: # ------------------------------------------------------------- Make the course
2104: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
2105: $ENV{'user.home'});
2106: unless ($reply eq 'ok') { return 'error: '.$reply; }
1.230 stredwic 2107: $uhome=&homeserver($uname,$udom,'true');
1.84 www 2108: if (($uhome eq '') || ($uhome eq 'no_host')) {
2109: return 'error: no such course';
2110: }
2111: &writecoursepref($udom.'_'.$uname,
2112: ('description' => $description,
2113: 'url' => $url));
2114: return '/'.$udom.'/'.$uname;
2115: }
2116:
1.21 www 2117: # ---------------------------------------------------------- Assign Custom Role
2118:
2119: sub assigncustomrole {
2120: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start)=@_;
2121: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
2122: $end,$start);
2123: }
2124:
2125: # ----------------------------------------------------------------- Revoke Role
2126:
2127: sub revokerole {
2128: my ($udom,$uname,$url,$role)=@_;
2129: my $now=time;
2130: return &assignrole($udom,$uname,$url,$role,$now);
2131: }
2132:
2133: # ---------------------------------------------------------- Revoke Custom Role
2134:
2135: sub revokecustomrole {
2136: my ($udom,$uname,$url,$rdom,$rnam,$rolename)=@_;
2137: my $now=time;
2138: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now);
1.17 www 2139: }
2140:
2141: # ------------------------------------------------------------ Directory lister
2142:
2143: sub dirlist {
2144: my $uri=shift;
1.18 www 2145: $uri=~s/^\///;
2146: $uri=~s/\/$//;
1.19 www 2147: my ($res,$udom,$uname,@rest)=split(/\//,$uri);
2148: if ($udom) {
2149: if ($uname) {
2150: my $listing=reply('ls:'.$perlvar{'lonDocRoot'}.'/'.$uri,
2151: homeserver($uname,$udom));
2152: return split(/:/,$listing);
2153: } else {
2154: my $tryserver;
2155: my %allusers=();
2156: foreach $tryserver (keys %libserv) {
2157: if ($hostdom{$tryserver} eq $udom) {
2158: my $listing=reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.$udom,
2159: $tryserver);
2160: if (($listing ne 'no_such_dir') && ($listing ne 'empty')
2161: && ($listing ne 'con_lost')) {
1.191 harris41 2162: foreach (split(/:/,$listing)) {
1.19 www 2163: my ($entry,@stat)=split(/&/,$_);
2164: $allusers{$entry}=1;
1.191 harris41 2165: }
1.19 www 2166: }
2167: }
2168: }
2169: my $alluserstr='';
1.191 harris41 2170: foreach (sort keys %allusers) {
1.19 www 2171: $alluserstr.=$_.'&user:';
1.191 harris41 2172: }
1.19 www 2173: $alluserstr=~s/:$//;
2174: return split(/:/,$alluserstr);
2175: }
2176: } else {
2177: my $tryserver;
2178: my %alldom=();
2179: foreach $tryserver (keys %libserv) {
2180: $alldom{$hostdom{$tryserver}}=1;
2181: }
2182: my $alldomstr='';
1.191 harris41 2183: foreach (sort keys %alldom) {
1.19 www 2184: $alldomstr.=$perlvar{'lonDocRoot'}.'/res/'.$_.'&domain:';
1.191 harris41 2185: }
1.19 www 2186: $alldomstr=~s/:$//;
2187: return split(/:/,$alldomstr);
2188: }
1.26 www 2189: }
2190:
2191: # -------------------------------------------------------- Value of a Condition
2192:
1.40 www 2193: sub directcondval {
2194: my $number=shift;
2195: if ($ENV{'user.state.'.$ENV{'request.course.id'}}) {
2196: return substr($ENV{'user.state.'.$ENV{'request.course.id'}},$number,1);
2197: } else {
2198: return 2;
2199: }
2200: }
2201:
1.26 www 2202: sub condval {
2203: my $condidx=shift;
2204: my $result=0;
1.54 www 2205: my $allpathcond='';
1.191 harris41 2206: foreach (split(/\|/,$condidx)) {
1.54 www 2207: if (defined($ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$_})) {
2208: $allpathcond.=
2209: '('.$ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$_}.')|';
2210: }
1.191 harris41 2211: }
1.54 www 2212: $allpathcond=~s/\|$//;
1.33 www 2213: if ($ENV{'request.course.id'}) {
1.54 www 2214: if ($allpathcond) {
1.26 www 2215: my $operand='|';
2216: my @stack;
1.191 harris41 2217: foreach ($allpathcond=~/(\d+|\(|\)|\&|\|)/g) {
1.26 www 2218: if ($_ eq '(') {
2219: push @stack,($operand,$result)
2220: } elsif ($_ eq ')') {
2221: my $before=pop @stack;
2222: if (pop @stack eq '&') {
2223: $result=$result>$before?$before:$result;
2224: } else {
2225: $result=$result>$before?$result:$before;
2226: }
2227: } elsif (($_ eq '&') || ($_ eq '|')) {
2228: $operand=$_;
2229: } else {
1.40 www 2230: my $new=directcondval($_);
1.26 www 2231: if ($operand eq '&') {
2232: $result=$result>$new?$new:$result;
2233: } else {
2234: $result=$result>$new?$result:$new;
1.191 harris41 2235: }
1.26 www 2236: }
1.191 harris41 2237: }
1.26 www 2238: }
2239: }
2240: return $result;
1.28 www 2241: }
2242:
1.200 www 2243: # --------------------------------------------------- Course Resourcedata Query
2244:
2245: sub courseresdata {
2246: my ($coursenum,$coursedomain,@which)=@_;
2247: my $coursehom=&homeserver($coursenum,$coursedomain);
2248: my $hashid=$coursenum.':'.$coursedomain;
2249: unless (defined($courseresdatacache{$hashid.'.time'})) {
2250: unless (time-$courseresdatacache{$hashid.'.time'}<300) {
2251: my $coursehom=&homeserver($coursenum,$coursedomain);
2252: if ($coursehom) {
2253: my $dumpreply=&reply('dump:'.$coursedomain.':'.$coursenum.
2254: ':resourcedata:.',$coursehom);
2255: unless ($dumpreply=~/^error\:/) {
2256: $courseresdatacache{$hashid.'.time'}=time;
2257: $courseresdatacache{$hashid}=$dumpreply;
2258: }
2259: }
2260: }
2261: }
2262: my @pairs=split(/\&/,$courseresdatacache{$hashid});
2263: my %returnhash=();
2264: foreach (@pairs) {
2265: my ($key,$value)=split(/=/,$_);
2266: $returnhash{unescape($key)}=unescape($value);
2267: }
2268: my $item;
2269: foreach $item (@which) {
2270: if ($returnhash{$item}) { return $returnhash{$item}; }
2271: }
2272: return '';
2273: }
2274:
1.28 www 2275: # --------------------------------------------------------- Value of a Variable
2276:
1.58 www 2277: sub EXT {
1.218 albertel 2278: my ($varname,$symbparm,$udom,$uname)=@_;
2279:
1.68 www 2280: unless ($varname) { return ''; }
1.218 albertel 2281:
2282: #get real user name/domain, courseid and symb
2283: my $courseid;
2284: if (!($uname && $udom)) {
2285: (my $cursymb,$courseid,$udom,$uname)=&Apache::lonxml::whichuser();
2286: if (!$symbparm) { $symbparm=$cursymb; }
2287: } else {
2288: $courseid=$ENV{'request.course.id'};
2289: }
2290:
1.48 www 2291: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
2292: my $rest;
2293: if ($therest[0]) {
2294: $rest=join('.',@therest);
2295: } else {
2296: $rest='';
2297: }
1.57 www 2298: my $qualifierrest=$qualifier;
2299: if ($rest) { $qualifierrest.='.'.$rest; }
2300: my $spacequalifierrest=$space;
2301: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
1.28 www 2302: if ($realm eq 'user') {
1.48 www 2303: # --------------------------------------------------------------- user.resource
2304: if ($space eq 'resource') {
1.218 albertel 2305: my %restored=&restore(undef,undef,$udom,$uname);
1.57 www 2306: return $restored{$qualifierrest};
1.48 www 2307: # ----------------------------------------------------------------- user.access
2308: } elsif ($space eq 'access') {
1.218 albertel 2309: # FIXME - not supporting calls for a specific user
1.48 www 2310: return &allowed($qualifier,$rest);
2311: # ------------------------------------------ user.preferences, user.environment
2312: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
1.218 albertel 2313: if (($uname eq $ENV{'user.name'}) &&
2314: ($udom eq $ENV{'user.domain'})) {
2315: return $ENV{join('.',('environment',$qualifierrest))};
2316: } else {
2317: my %returnhash=&userenvironment($udom,$uname,$qualifierrest);
2318: return $returnhash{$qualifierrest};
2319: }
1.48 www 2320: # ----------------------------------------------------------------- user.course
2321: } elsif ($space eq 'course') {
1.218 albertel 2322: # FIXME - not supporting calls for a specific user
1.48 www 2323: return $ENV{join('.',('request.course',$qualifier))};
2324: # ------------------------------------------------------------------- user.role
2325: } elsif ($space eq 'role') {
1.218 albertel 2326: # FIXME - not supporting calls for a specific user
1.48 www 2327: my ($role,$where)=split(/\./,$ENV{'request.role'});
2328: if ($qualifier eq 'value') {
2329: return $role;
2330: } elsif ($qualifier eq 'extent') {
2331: return $where;
2332: }
2333: # ----------------------------------------------------------------- user.domain
2334: } elsif ($space eq 'domain') {
1.218 albertel 2335: return $udom;
1.48 www 2336: # ------------------------------------------------------------------- user.name
2337: } elsif ($space eq 'name') {
1.218 albertel 2338: return $uname;
1.48 www 2339: # ---------------------------------------------------- Any other user namespace
1.29 www 2340: } else {
1.48 www 2341: my $item=($rest)?$qualifier.'.'.$rest:$qualifier;
1.131 albertel 2342: my %reply=&get($space,[$item]);
1.48 www 2343: return $reply{$item};
2344: }
1.236 www 2345: } elsif ($realm eq 'query') {
2346: # ---------------------------------------------- pull stuff out of query string
2347: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},[$space]);
2348: return $ENV{'form.'.$space};
2349: } elsif ($realm eq 'request') {
1.48 www 2350: # ------------------------------------------------------------- request.browser
2351: if ($space eq 'browser') {
2352: return $ENV{'browser.'.$qualifier};
1.57 www 2353: # ------------------------------------------------------------ request.filename
2354: } else {
2355: return $ENV{'request.'.$spacequalifierrest};
1.29 www 2356: }
1.28 www 2357: } elsif ($realm eq 'course') {
1.48 www 2358: # ---------------------------------------------------------- course.description
1.218 albertel 2359: return $ENV{'course.'.$courseid.'.'.$spacequalifierrest};
1.57 www 2360: } elsif ($realm eq 'resource') {
1.165 www 2361:
1.218 albertel 2362: if ($courseid eq $ENV{'request.course.id'}) {
1.165 www 2363:
1.218 albertel 2364: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
1.165 www 2365:
1.60 www 2366: # ----------------------------------------------------- Cascading lookup scheme
1.218 albertel 2367: if (!$symbparm) { $symbparm=&symbread(); }
2368: my $symbp=$symbparm;
2369: my $mapp=(split(/\_\_\_/,$symbp))[0];
2370:
2371: my $symbparm=$symbp.'.'.$spacequalifierrest;
2372: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
2373:
2374: my $section;
2375: if (($ENV{'user.name'} eq $uname) &&
2376: ($ENV{'user.domain'} eq $udom)) {
2377: $section={'request.course.sec'};
2378: } else {
2379: $section=&usection($udom,$uname,$courseid);
2380: }
2381:
2382: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
2383: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
2384: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
2385:
2386: my $courselevel=$courseid.'.'.$spacequalifierrest;
2387: my $courselevelr=$courseid.'.'.$symbparm;
2388: my $courselevelm=$courseid.'.'.$mapparm;
1.69 www 2389:
1.60 www 2390: # ----------------------------------------------------------- first, check user
1.218 albertel 2391: my %resourcedata=&get('resourcedata',
2392: [$courselevelr,$courselevelm,$courselevel],
2393: $udom,$uname);
2394: if (($resourcedata{$courselevelr}!~/^error\:/) &&
2395: ($resourcedata{$courselevelr}!~/^con_lost/)) {
2396:
2397: if ($resourcedata{$courselevelr}) {
2398: return $resourcedata{$courselevelr}; }
2399: if ($resourcedata{$courselevelm}) {
2400: return $resourcedata{$courselevelm}; }
2401: if ($resourcedata{$courselevel}) {
2402: return $resourcedata{$courselevel}; }
2403: } else {
2404: if ($resourcedata{$courselevelr}!~/No such file/) {
2405: &logthis("<font color=blue>WARNING:".
2406: " Trying to get resource data for ".
2407: $uname." at ".$udom.": ".
2408: $resourcedata{$courselevelr}."</font>");
2409: }
2410: }
1.95 www 2411:
1.60 www 2412: # -------------------------------------------------------- second, check course
1.96 www 2413:
1.218 albertel 2414: my $coursereply=&courseresdata($ENV{'course.'.$courseid.'.num'},
2415: $ENV{'course.'.$courseid.'.domain'},
2416: ($seclevelr,$seclevelm,$seclevel,
2417: $courselevelr,$courselevelm,
2418: $courselevel));
2419: if ($coursereply) { return $coursereply; }
1.200 www 2420:
1.60 www 2421: # ------------------------------------------------------ third, check map parms
1.218 albertel 2422: my %parmhash=();
2423: my $thisparm='';
2424: if (tie(%parmhash,'GDBM_File',
2425: $ENV{'request.course.fn'}.'_parms.db',
2426: &GDBM_READER,0640)) {
2427: $thisparm=$parmhash{$symbparm};
2428: untie(%parmhash);
2429: }
2430: if ($thisparm) { return $thisparm; }
2431: }
1.60 www 2432: # --------------------------------------------- last, look in resource metadata
1.71 www 2433:
1.218 albertel 2434: $spacequalifierrest=~s/\./\_/;
2435: my $metadata=&metadata($ENV{'request.filename'},$spacequalifierrest);
2436: if ($metadata) { return $metadata; }
2437: $metadata=&metadata($ENV{'request.filename'},
2438: 'parameter_'.$spacequalifierrest);
2439: if ($metadata) { return $metadata; }
1.142 www 2440:
1.145 www 2441: # ------------------------------------------------------------------ Cascade up
1.218 albertel 2442: unless ($space eq '0') {
2443: my ($part,$id)=split(/\_/,$space);
2444: if ($id) {
2445: my $partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
2446: $symbparm,$udom,$uname);
2447: if ($partgeneral) { return $partgeneral; }
2448: } else {
2449: my $resourcegeneral=&EXT('resource.0.'.$qualifierrest,
2450: $symbparm,$udom,$uname);
2451: if ($resourcegeneral) { return $resourcegeneral; }
2452: }
2453: }
1.71 www 2454:
1.48 www 2455: # ---------------------------------------------------- Any other user namespace
2456: } elsif ($realm eq 'environment') {
2457: # ----------------------------------------------------------------- environment
1.219 albertel 2458: if (($uname eq $ENV{'user.name'})&&($udom eq $ENV{'user.domain'})) {
2459: return $ENV{'environment.'.$spacequalifierrest};
2460: } else {
2461: my %returnhash=&userenvironment($udom,$uname,
2462: $spacequalifierrest);
2463: return $returnhash{$spacequalifierrest};
2464: }
1.28 www 2465: } elsif ($realm eq 'system') {
1.48 www 2466: # ----------------------------------------------------------------- system.time
2467: if ($space eq 'time') {
2468: return time;
2469: }
1.28 www 2470: }
1.48 www 2471: return '';
1.61 www 2472: }
2473:
1.71 www 2474: # ---------------------------------------------------------------- Get metadata
2475:
2476: sub metadata {
1.176 www 2477: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
1.78 www 2478:
1.71 www 2479: $uri=&declutter($uri);
1.73 www 2480: my $filename=$uri;
2481: $uri=~s/\.meta$//;
1.172 www 2482: #
2483: # Is the metadata already cached?
1.177 www 2484: # Look at timestamp of caching
1.172 www 2485: # Everything is cached by the main uri, libraries are never directly cached
2486: #
1.174 www 2487: unless (abs($metacache{$uri.':cachedtimestamp'}-time)<600) {
1.172 www 2488: #
2489: # Is this a recursive call for a library?
2490: #
1.171 www 2491: if ($liburi) {
2492: $liburi=&declutter($liburi);
2493: $filename=$liburi;
2494: }
1.140 www 2495: my %metathesekeys=();
1.73 www 2496: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
2497: my $metastring=&getfile($perlvar{'lonDocRoot'}.'/res/'.$filename);
1.208 albertel 2498: my $parser=HTML::LCParser->new(\$metastring);
1.71 www 2499: my $token;
1.140 www 2500: undef %metathesekeys;
1.71 www 2501: while ($token=$parser->get_token) {
2502: if ($token->[0] eq 'S') {
1.135 www 2503: if (defined($token->[2]->{'package'})) {
1.172 www 2504: #
2505: # This is a package - get package info
2506: #
1.136 www 2507: my $package=$token->[2]->{'package'};
2508: my $keyroot='';
1.172 www 2509: if ($prefix) {
2510: $keyroot.='_'.$prefix;
2511: } else {
2512: if (defined($token->[2]->{'part'})) {
2513: $keyroot.='_'.$token->[2]->{'part'};
2514: }
1.136 www 2515: }
2516: if (defined($token->[2]->{'id'})) {
1.165 www 2517: $keyroot.='_'.$token->[2]->{'id'};
1.136 www 2518: }
2519: if ($metacache{$uri.':packages'}) {
2520: $metacache{$uri.':packages'}.=','.$package.$keyroot;
2521: } else {
2522: $metacache{$uri.':packages'}=$package.$keyroot;
2523: }
1.191 harris41 2524: foreach (keys %packagetab) {
1.137 www 2525: if ($_=~/^$package\&/) {
2526: my ($pack,$name,$subp)=split(/\&/,$_);
1.139 www 2527: my $value=$packagetab{$_};
1.144 www 2528: my $part=$keyroot;
2529: $part=~s/^\_//;
1.139 www 2530: if ($subp eq 'display') {
2531: $value.=' [Part: '.$part.']';
2532: }
2533: my $unikey='parameter'.$keyroot.'_'.$name;
1.140 www 2534: $metathesekeys{$unikey}=1;
1.144 www 2535: $metacache{$uri.':'.$unikey.'.part'}=$part;
1.141 www 2536: unless
2537: (defined($metacache{$uri.':'.$unikey.'.'.$subp})) {
2538: $metacache{$uri.':'.$unikey.'.'.$subp}=$value;
2539: }
1.137 www 2540: }
1.191 harris41 2541: }
1.135 www 2542: } else {
1.172 www 2543: #
2544: # This is not a package - some other kind of start tag
2545: #
1.175 www 2546: my $entry=$token->[1];
1.176 www 2547: my $unikey;
2548: if ($entry eq 'import') {
2549: $unikey='';
2550: } else {
2551: $unikey=$entry;
2552: }
1.172 www 2553: if ($prefix) {
1.176 www 2554: $unikey.=$prefix;
1.172 www 2555: } else {
2556: if (defined($token->[2]->{'part'})) {
2557: $unikey.='_'.$token->[2]->{'part'};
2558: }
1.136 www 2559: }
2560: if (defined($token->[2]->{'id'})) {
1.165 www 2561: $unikey.='_'.$token->[2]->{'id'};
1.71 www 2562: }
1.175 www 2563:
2564: if ($entry eq 'import') {
2565: #
2566: # Importing a library here
1.176 www 2567: #
2568: if (defined($depthcount)) { $depthcount++; } else
2569: { $depthcount=0; }
2570: if ($depthcount<20) {
1.191 harris41 2571: foreach (split(/\,/,&metadata($uri,'keys',
2572: $parser->get_text('/import'),$unikey,
2573: $depthcount))) {
1.177 www 2574: $metathesekeys{$_}=1;
1.191 harris41 2575: }
1.176 www 2576: }
1.175 www 2577: } else {
2578:
1.72 www 2579: if (defined($token->[2]->{'name'})) {
1.71 www 2580: $unikey.='_'.$token->[2]->{'name'};
2581: }
1.140 www 2582: $metathesekeys{$unikey}=1;
1.191 harris41 2583: foreach (@{$token->[3]}) {
1.71 www 2584: $metacache{$uri.':'.$unikey.'.'.$_}=$token->[2]->{$_};
1.191 harris41 2585: }
1.78 www 2586: unless (
1.208 albertel 2587: $metacache{$uri.':'.$unikey}=&HTML::Entities::decode($parser->get_text('/'.$entry))
1.78 www 2588: ) { $metacache{$uri.':'.$unikey}=
2589: $metacache{$uri.':'.$unikey.'.default'};
2590: }
1.172 www 2591: # end of not-a-package not-a-library import
1.175 www 2592: }
1.172 www 2593: # end of not-a-package start tag
2594: }
2595: # the next is the end of "start tag"
1.140 www 2596: }
1.71 www 2597: }
1.140 www 2598: $metacache{$uri.':keys'}=join(',',keys %metathesekeys);
1.174 www 2599: $metacache{$uri.':cachedtimestamp'}=time;
1.177 www 2600: # this is the end of "was not already recently cached
1.71 www 2601: }
2602: return $metacache{$uri.':'.$what};
2603: }
2604:
1.31 www 2605: # ------------------------------------------------- Update symbolic store links
2606:
2607: sub symblist {
2608: my ($mapname,%newhash)=@_;
2609: $mapname=declutter($mapname);
2610: my %hash;
2611: if (($ENV{'request.course.fn'}) && (%newhash)) {
2612: if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
2613: &GDBM_WRCREAT,0640)) {
1.191 harris41 2614: foreach (keys %newhash) {
1.211 www 2615: $hash{declutter($_)}=$mapname.'___'.$newhash{$_};
1.191 harris41 2616: }
1.31 www 2617: if (untie(%hash)) {
2618: return 'ok';
2619: }
2620: }
2621: }
2622: return 'error';
1.212 www 2623: }
2624:
2625: # --------------------------------------------------------------- Verify a symb
2626:
2627: sub symbverify {
2628: my ($symb,$thisfn)=@_;
1.213 www 2629: $thisfn=&declutter($thisfn);
1.215 www 2630: # direct jump to resource in page or to a sequence - will construct own symbs
2631: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
2632: # check URL part
1.213 www 2633: my ($map,$resid,$url)=split(/\_\_\_/,$symb);
2634: unless (&symbclean($url) eq &symbclean($thisfn)) { return 0; }
2635:
1.216 www 2636: $symb=&symbclean($symb);
1.213 www 2637:
2638: my %bighash;
2639: my $okay=0;
2640: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
2641: &GDBM_READER,0640)) {
1.216 www 2642: my $ids=$bighash{'ids_/res/'.$thisfn};
2643: unless ($ids) {
2644: $ids=$bighash{'ids_/'.$thisfn};
2645: }
2646: if ($ids) {
2647: # ------------------------------------------------------------------- Has ID(s)
2648: foreach (split(/\,/,$ids)) {
2649: my ($mapid,$resid)=split(/\./,$_);
2650: if (
2651: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
2652: eq $symb) {
2653: $okay=1;
2654: }
2655: }
2656: }
1.213 www 2657: untie(%bighash);
2658: }
2659: return $okay;
1.31 www 2660: }
2661:
1.210 www 2662: # --------------------------------------------------------------- Clean-up symb
2663:
2664: sub symbclean {
2665: my $symb=shift;
1.213 www 2666:
1.210 www 2667: # remove version from map
2668: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
1.215 www 2669:
1.210 www 2670: # remove version from URL
2671: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
1.213 www 2672:
1.210 www 2673: return $symb;
2674: }
2675:
1.31 www 2676: # ------------------------------------------------------ Return symb list entry
2677:
2678: sub symbread {
1.44 www 2679: my $thisfn=shift;
2680: unless ($thisfn) {
1.210 www 2681: if ($ENV{'request.symb'}) { return &symbclean($ENV{'request.symb'}); }
1.44 www 2682: $thisfn=$ENV{'request.filename'};
2683: }
2684: $thisfn=declutter($thisfn);
1.31 www 2685: my %hash;
1.37 www 2686: my %bighash;
2687: my $syval='';
1.45 www 2688: if (($ENV{'request.course.fn'}) && ($thisfn)) {
1.31 www 2689: if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
2690: &GDBM_READER,0640)) {
2691: $syval=$hash{$thisfn};
1.37 www 2692: untie(%hash);
2693: }
2694: # ---------------------------------------------------------- There was an entry
2695: if ($syval) {
2696: unless ($syval=~/\_\d+$/) {
2697: unless ($ENV{'form.request.prefix'}=~/\.(\d+)\_$/) {
1.44 www 2698: &appenv('request.ambiguous' => $thisfn);
1.37 www 2699: return '';
2700: }
2701: $syval.=$1;
2702: }
2703: } else {
2704: # ------------------------------------------------------- Was not in symb table
2705: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
2706: &GDBM_READER,0640)) {
2707: # ---------------------------------------------- Get ID(s) for current resource
2708: my $ids=$bighash{'ids_/res/'.$thisfn};
1.65 www 2709: unless ($ids) {
2710: $ids=$bighash{'ids_/'.$thisfn};
2711: }
1.37 www 2712: if ($ids) {
2713: # ------------------------------------------------------------------- Has ID(s)
2714: my @possibilities=split(/\,/,$ids);
1.39 www 2715: if ($#possibilities==0) {
2716: # ----------------------------------------------- There is only one possibility
1.37 www 2717: my ($mapid,$resid)=split(/\./,$ids);
2718: $syval=declutter($bighash{'map_id_'.$mapid}).'___'.$resid;
2719: } else {
1.39 www 2720: # ------------------------------------------ There is more than one possibility
2721: my $realpossible=0;
1.191 harris41 2722: foreach (@possibilities) {
1.39 www 2723: my $file=$bighash{'src_'.$_};
2724: if (&allowed('bre',$file)) {
2725: my ($mapid,$resid)=split(/\./,$_);
2726: if ($bighash{'map_type_'.$mapid} ne 'page') {
2727: $realpossible++;
2728: $syval=declutter($bighash{'map_id_'.$mapid}).
2729: '___'.$resid;
2730: }
2731: }
1.191 harris41 2732: }
1.39 www 2733: if ($realpossible!=1) { $syval=''; }
1.37 www 2734: }
2735: }
2736: untie(%bighash)
2737: }
1.31 www 2738: }
1.62 www 2739: if ($syval) {
1.210 www 2740: return &symbclean($syval.'___'.$thisfn);
1.62 www 2741: }
1.31 www 2742: }
1.44 www 2743: &appenv('request.ambiguous' => $thisfn);
1.31 www 2744: return '';
2745: }
2746:
2747: # ---------------------------------------------------------- Return random seed
2748:
1.32 www 2749: sub numval {
2750: my $txt=shift;
2751: $txt=~tr/A-J/0-9/;
2752: $txt=~tr/a-j/0-9/;
2753: $txt=~tr/K-T/0-9/;
2754: $txt=~tr/k-t/0-9/;
2755: $txt=~tr/U-Z/0-5/;
2756: $txt=~tr/u-z/0-5/;
2757: $txt=~s/\D//g;
2758: return int($txt);
2759: }
2760:
1.31 www 2761: sub rndseed {
1.155 albertel 2762: my ($symb,$courseid,$domain,$username)=@_;
2763: if (!$symb) {
2764: unless ($symb=&symbread()) { return time; }
2765: }
2766: if (!$courseid) { $courseid=$ENV{'request.course.id'};}
2767: if (!$domain) {$domain=$ENV{'user.domain'};}
2768: if (!$username) {$username=$ENV{'user.name'};}
2769: {
1.98 albertel 2770: use integer;
2771: my $symbchck=unpack("%32C*",$symb) << 27;
1.100 albertel 2772: my $symbseed=numval($symb) << 22;
1.155 albertel 2773: my $namechck=unpack("%32C*",$username) << 17;
2774: my $nameseed=numval($username) << 12;
2775: my $domainseed=unpack("%32C*",$domain) << 7;
2776: my $courseseed=unpack("%32C*",$courseid);
1.98 albertel 2777: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
1.99 albertel 2778: #uncommenting these lines can break things!
2779: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
2780: #&Apache::lonxml::debug("rndseed :$num:$symb");
1.98 albertel 2781: return $num;
2782: }
1.36 albertel 2783: }
2784:
1.76 www 2785: sub ireceipt {
2786: my ($funame,$fudom,$fucourseid,$fusymb)=@_;
2787: my $cuname=unpack("%32C*",$funame);
2788: my $cudom=unpack("%32C*",$fudom);
2789: my $cucourseid=unpack("%32C*",$fucourseid);
2790: my $cusymb=unpack("%32C*",$fusymb);
1.77 www 2791: my $cunique=unpack("%32C*",$perlvar{'lonReceipt'});
1.76 www 2792: return unpack("%32C*",$perlvar{'lonHostID'}).'-'.
2793: ($cunique%$cuname+
2794: $cunique%$cudom+
2795: $cusymb%$cuname+
2796: $cusymb%$cudom+
2797: $cucourseid%$cuname+
2798: $cucourseid%$cudom);
2799: }
2800:
2801: sub receipt {
2802: return &ireceipt($ENV{'user.name'},$ENV{'user.domain'},
2803: $ENV{'request.course.id'},&symbread());
2804: }
2805:
1.36 albertel 2806: # ------------------------------------------------------------ Serves up a file
2807: # returns either the contents of the file or a -1
2808: sub getfile {
2809: my $file=shift;
1.37 www 2810: &repcopy($file);
1.36 albertel 2811: if (! -e $file ) { return -1; };
2812: my $fh=Apache::File->new($file);
2813: my $a='';
2814: while (<$fh>) { $a .=$_; }
2815: return $a
2816: }
2817:
2818: sub filelocation {
2819: my ($dir,$file) = @_;
2820: my $location;
2821: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
1.59 albertel 2822: if ($file=~m:^/~:) { # is a contruction space reference
2823: $location = $file;
2824: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
1.36 albertel 2825: } else {
1.59 albertel 2826: $file=~s/^$perlvar{'lonDocRoot'}//;
2827: $file=~s:^/*res::;
2828: if ( !( $file =~ m:^/:) ) {
2829: $location = $dir. '/'.$file;
2830: } else {
2831: $location = '/home/httpd/html/res'.$file;
2832: }
1.36 albertel 2833: }
2834: $location=~s://+:/:g; # remove duplicate /
1.46 www 2835: while ($location=~m:/\.\./:) {$location=~ s:/[^/]+/\.\./:/:g;} #remove dir/..
2836: return $location;
2837: }
1.36 albertel 2838:
1.46 www 2839: sub hreflocation {
2840: my ($dir,$file)=@_;
1.191 harris41 2841: unless (($file=~/^http:\/\//i) || ($file=~/^\//)) {
1.46 www 2842: my $finalpath=filelocation($dir,$file);
2843: $finalpath=~s/^\/home\/httpd\/html//;
1.225 albertel 2844: $finalpath=~s-/home/(\w+)/public_html/-/~$1/-;
1.46 www 2845: return $finalpath;
2846: } else {
2847: return $file;
2848: }
1.31 www 2849: }
2850:
2851: # ------------------------------------------------------------- Declutters URLs
2852:
2853: sub declutter {
2854: my $thisfn=shift;
2855: $thisfn=~s/^$perlvar{'lonDocRoot'}//;
2856: $thisfn=~s/^\///;
2857: $thisfn=~s/^res\///;
1.235 www 2858: $thisfn=~s/\?.+$//;
1.31 www 2859: return $thisfn;
1.12 www 2860: }
2861:
2862: # -------------------------------------------------------- Escape Special Chars
2863:
2864: sub escape {
2865: my $str=shift;
2866: $str =~ s/(\W)/"%".unpack('H2',$1)/eg;
2867: return $str;
2868: }
2869:
2870: # ----------------------------------------------------- Un-Escape Special Chars
2871:
2872: sub unescape {
2873: my $str=shift;
2874: $str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2875: return $str;
2876: }
1.11 www 2877:
1.1 albertel 2878: # ================================================================ Main Program
2879:
1.184 www 2880: sub goodbye {
1.204 albertel 2881: &logthis("Starting Shut down");
1.184 www 2882: &flushcourselogs();
2883: &logthis("Shutting down");
2884: }
2885:
1.179 www 2886: BEGIN {
1.228 harris41 2887: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
1.195 www 2888: unless ($readit) {
1.217 harris41 2889: {
2890: my $config=Apache::File->new("/etc/httpd/conf/loncapa.conf");
2891:
2892: while (my $configline=<$config>) {
2893: if ($configline =~ /^[^\#]*PerlSetVar/) {
1.1 albertel 2894: my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);
1.8 www 2895: chomp($varvalue);
1.1 albertel 2896: $perlvar{$varname}=$varvalue;
2897: }
2898: }
2899: }
1.227 harris41 2900: {
2901: my $config=Apache::File->new("/etc/httpd/conf/loncapa_apache.conf");
2902:
2903: while (my $configline=<$config>) {
2904: if ($configline =~ /^[^\#]*PerlSetVar/) {
2905: my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);
2906: chomp($varvalue);
2907: $perlvar{$varname}=$varvalue;
2908: }
2909: }
2910: }
1.1 albertel 2911:
2912: # ------------------------------------------------------------- Read hosts file
2913: {
2914: my $config=Apache::File->new("$perlvar{'lonTabDir'}/hosts.tab");
2915:
2916: while (my $configline=<$config>) {
1.154 www 2917: chomp($configline);
1.1 albertel 2918: my ($id,$domain,$role,$name,$ip)=split(/:/,$configline);
2919: $hostname{$id}=$name;
2920: $hostdom{$id}=$domain;
1.150 www 2921: $hostip{$id}=$ip;
1.1 albertel 2922: if ($role eq 'library') { $libserv{$id}=$name; }
2923: }
2924: }
2925:
2926: # ------------------------------------------------------ Read spare server file
2927: {
2928: my $config=Apache::File->new("$perlvar{'lonTabDir'}/spare.tab");
2929:
2930: while (my $configline=<$config>) {
2931: chomp($configline);
2932: if (($configline) && ($configline ne $perlvar{'lonHostID'})) {
2933: $spareid{$configline}=1;
2934: }
2935: }
2936: }
1.11 www 2937: # ------------------------------------------------------------ Read permissions
2938: {
2939: my $config=Apache::File->new("$perlvar{'lonTabDir'}/roles.tab");
2940:
2941: while (my $configline=<$config>) {
2942: chomp($configline);
1.160 www 2943: if ($configline) {
1.11 www 2944: my ($role,$perm)=split(/ /,$configline);
2945: if ($perm ne '') { $pr{$role}=$perm; }
1.160 www 2946: }
1.11 www 2947: }
2948: }
2949:
2950: # -------------------------------------------- Read plain texts for permissions
2951: {
2952: my $config=Apache::File->new("$perlvar{'lonTabDir'}/rolesplain.tab");
2953:
2954: while (my $configline=<$config>) {
2955: chomp($configline);
1.160 www 2956: if ($configline) {
1.11 www 2957: my ($short,$plain)=split(/:/,$configline);
2958: if ($plain ne '') { $prp{$short}=$plain; }
1.160 www 2959: }
1.135 www 2960: }
2961: }
2962:
2963: # ---------------------------------------------------------- Read package table
2964: {
2965: my $config=Apache::File->new("$perlvar{'lonTabDir'}/packages.tab");
2966:
2967: while (my $configline=<$config>) {
2968: chomp($configline);
2969: my ($short,$plain)=split(/:/,$configline);
1.143 www 2970: my ($pack,$name)=split(/\&/,$short);
2971: if ($plain ne '') {
2972: $packagetab{$pack.'&'.$name.'&name'}=$name;
2973: $packagetab{$short}=$plain;
1.25 www 2974: }
1.11 www 2975: }
2976: }
2977:
1.71 www 2978: %metacache=();
1.185 www 2979:
2980: $processmarker=$$.'_'.time.'_'.$perlvar{'lonHostID'};
1.186 www 2981: $dumpcount=0;
1.22 www 2982:
1.163 harris41 2983: &logtouch();
1.12 www 2984: &logthis('<font color=yellow>INFO: Read configuration</font>');
1.195 www 2985: $readit=1;
2986: }
1.1 albertel 2987: }
1.179 www 2988:
1.1 albertel 2989: 1;
1.191 harris41 2990: __END__
2991:
2992: =head1 NAME
2993:
2994: Apache::lonnet - TCP networking package
2995:
2996: =head1 SYNOPSIS
2997:
2998: Invoked by other LON-CAPA modules.
2999:
3000: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
3001:
3002: =head1 INTRODUCTION
3003:
3004: This module provides subroutines which interact with the
3005: lonc/lond (TCP) network layer of LON-CAPA.
3006:
3007: This is part of the LearningOnline Network with CAPA project
3008: described at http://www.lon-capa.org.
3009:
3010: =head1 HANDLER SUBROUTINE
3011:
3012: There is no handler routine for this module.
3013:
3014: =head1 OTHER SUBROUTINES
3015:
3016: =over 4
3017:
3018: =item *
3019:
3020: logtouch() : make sure the logfile, lonnet.log, exists
3021:
3022: =item *
3023:
3024: logthis() : append message to lonnet.log
3025:
3026: =item *
3027:
3028: logperm() : append a permanent message to lonnet.perm.log
3029:
3030: =item *
3031:
3032: subreply() : non-critical communication, called by &reply
3033:
3034: =item *
3035:
3036: reply() : makes two attempts to pass message; logs refusals and rejections
3037:
3038: =item *
3039:
3040: reconlonc() : tries to reconnect lonc client processes.
3041:
3042: =item *
3043:
3044: critical() : passes a critical message to another server; if cannot get
3045: through then place message in connection buffer
3046:
3047: =item *
3048:
3049: appenv(%hash) : read in current user environment, append new environment
3050: values to make new user environment
3051:
3052: =item *
3053:
3054: delenv($varname) : read in current user environment, remove all values
3055: beginning with $varname, write new user environment (note: flock is used
3056: to prevent conflicting shared read/writes with file)
3057:
3058: =item *
3059:
3060: spareserver() : find server with least workload from spare.tab
3061:
3062: =item *
3063:
3064: queryauthenticate($uname,$udom) : try to determine user's current
3065: authentication scheme
3066:
3067: =item *
3068:
3069: authenticate($uname,$upass,$udom) : try to authenticate user from domain's lib
3070: servers (first use the current one)
3071:
3072: =item *
3073:
3074: homeserver($uname,$udom) : find the homebase for a user from domain's lib
3075: servers
3076:
3077: =item *
3078:
3079: idget($udom,@ids) : find the usernames behind a list of IDs (returns hash:
3080: id=>name,id=>name)
3081:
3082: =item *
3083:
3084: idrget($udom,@unames) : find the IDs behind a list of usernames (returns hash:
3085: name=>id,name=>id)
3086:
3087: =item *
3088:
3089: idput($udom,%ids) : store away a list of names and associated IDs
3090:
3091: =item *
3092:
3093: usection($domain,$user,$courseid) : output of section name/number or '' for
3094: "not in course" and '-1' for "no section"
3095:
3096: =item *
3097:
3098: userenvironment($domain,$user,$what) : puts out any environment parameter
3099: for a user
3100:
3101: =item *
3102:
3103: subscribe($fname) : subscribe to a resource, return URL if possible
3104:
3105: =item *
3106:
3107: repcopy($filename) : replicate file
3108:
3109: =item *
3110:
3111: ssi($url,%hash) : server side include, does a complete request cycle on url to
3112: localhost, posts hash
3113:
3114: =item *
3115:
3116: log($domain,$name,$home,$message) : write to permanent log for user; use
3117: critical subroutine
3118:
3119: =item *
3120:
3121: flushcourselogs() : flush (save) buffer logs and access logs
3122:
3123: =item *
3124:
3125: courselog($what) : save message for course in hash
3126:
3127: =item *
3128:
3129: courseacclog($what) : save message for course using &courselog(). Perform
3130: special processing for specific resource types (problems, exams, quizzes, etc).
3131:
3132: =item *
3133:
3134: countacc($url) : count the number of accesses to a given URL
3135:
3136: =item *
3137:
3138: sub checkout($symb,$tuname,$tudom,$tcrsid) : check out an item
3139:
3140: =item *
3141:
3142: sub checkin($token) : check in an item
3143:
3144: =item *
3145:
3146: sub expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
3147:
3148: =item *
3149:
3150: devalidate($symb) : devalidate spreadsheets
3151:
3152: =item *
3153:
3154: hash2str(%hash) : convert a hash into a string complete with escaping and '='
1.204 albertel 3155: and '&' separators, supports elements that are arrayrefs and hashrefs
3156:
3157: =item *
3158:
3159: hashref2str($hashref) : convert a hashref into a string complete with
3160: escaping and '=' and '&' separators, supports elements that are
3161: arrayrefs and hashrefs
3162:
3163: =item *
3164:
3165: arrayref2str($arrayref) : convert an arrayref into a string complete
3166: with escaping and '&' separators, supports elements that are arrayrefs
3167: and hashrefs
3168:
3169: =item *
3170:
3171: str2hash($string) : convert string to hash using unescaping and
3172: splitting on '=' and '&', supports elements that are arrayrefs and
3173: hashrefs
1.191 harris41 3174:
3175: =item *
3176:
1.204 albertel 3177: str2array($string) : convert string to hash using unescaping and
3178: splitting on '&', supports elements that are arrayrefs and hashrefs
1.191 harris41 3179:
3180: =item *
3181:
3182: tmpreset($symb,$namespace,$domain,$stuname) : temporary storage
3183:
3184: =item *
3185:
3186: tmprestore($symb,$namespace,$domain,$stuname) : temporary restore
3187:
3188: =item *
3189:
3190: store($storehash,$symb,$namespace,$domain,$stuname) : stores hash permanently
3191: for this url; hashref needs to be given and should be a \%hashname; the
3192: remaining args aren't required and if they aren't passed or are '' they will
3193: be derived from the ENV
3194:
3195: =item *
3196:
3197: cstore($storehash,$symb,$namespace,$domain,$stuname) : same as store but
3198: uses critical subroutine
3199:
3200: =item *
3201:
3202: restore($symb,$namespace,$domain,$stuname) : returns hash for this symb;
3203: all args are optional
3204:
3205: =item *
3206:
3207: coursedescription($courseid) : course description
3208:
3209: =item *
3210:
3211: rolesinit($domain,$username,$authhost) : get user privileges
3212:
3213: =item *
3214:
3215: get($namespace,$storearr,$udomain,$uname) : returns hash with keys from array
3216: reference filled in from namesp ($udomain and $uname are optional)
3217:
3218: =item *
3219:
3220: del($namespace,$storearr,$udomain,$uname) : deletes keys out of array from
3221: namesp ($udomain and $uname are optional)
3222:
3223: =item *
3224:
1.193 www 3225: dump($namespace,$udomain,$uname,$regexp) :
3226: dumps the complete (or key matching regexp) namespace into a hash
3227: ($udomain, $uname and $regexp are optional)
1.191 harris41 3228:
3229: =item *
3230:
3231: put($namespace,$storehash,$udomain,$uname) : stores hash in namesp
3232: ($udomain and $uname are optional)
3233:
3234: =item *
3235:
3236: cput($namespace,$storehash,$udomain,$uname) : critical put
3237: ($udomain and $uname are optional)
3238:
3239: =item *
3240:
3241: eget($namespace,$storearr,$udomain,$uname) : returns hash with keys from array
3242: reference filled in from namesp (encrypts the return communication)
3243: ($udomain and $uname are optional)
3244:
3245: =item *
3246:
3247: allowed($priv,$uri) : check for a user privilege; returns codes for allowed
3248: actions
3249: F: full access
3250: U,I,K: authentication modes (cxx only)
3251: '': forbidden
3252: 1: user needs to choose course
3253: 2: browse allowed
3254:
3255: =item *
3256:
3257: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
3258: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
3259: and course level
3260:
3261: =item *
3262:
3263: metadata_query($query,$custom,$customshow) : make a metadata query against the
3264: network of library servers; returns file handle of where SQL and regex results
3265: will be stored for query
3266:
3267: =item *
3268:
3269: plaintext($short) : return value in %prp hash (rolesplain.tab); plain text
3270: explanation of a user role term
3271:
3272: =item *
3273:
3274: assignrole($udom,$uname,$url,$role,$end,$start) : assign role; give a role to a
3275: user for the level given by URL. Optional start and end dates (leave empty
3276: string or zero for "no date")
3277:
3278: =item *
3279:
3280: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
3281:
3282: =item *
3283:
3284: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene) :
3285: modify user
3286:
3287: =item *
3288:
3289: modifystudent($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
3290: $end,$start) : modify student
3291:
3292: =item *
3293:
3294: writecoursepref($courseid,%prefs) : write preferences for a course
3295:
3296: =item *
3297:
3298: createcourse($udom,$description,$url) : make/modify course
3299:
3300: =item *
3301:
3302: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
3303: custom role; give a custom role to a user for the level given by URL. Specify
3304: name and domain of role author, and role name
3305:
3306: =item *
3307:
3308: revokerole($udom,$uname,$url,$role) : revoke a role for url
3309:
3310: =item *
3311:
3312: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
3313:
3314: =item *
3315:
3316: dirlist($uri) : return directory list based on URI
3317:
3318: =item *
3319:
3320: directcondval($number) : get current value of a condition; reads from a state
3321: string
3322:
3323: =item *
3324:
3325: condval($condidx) : value of condition index based on state
3326:
3327: =item *
3328:
3329: EXT($varname,$symbparm) : value of a variable
3330:
3331: =item *
3332:
3333: metadata($uri,$what,$liburi,$prefix,$depthcount) : get metadata; returns the
3334: metadata entry for a file; entry='keys', returns a comma separated list of keys
3335:
3336: =item *
3337:
3338: symblist($mapname,%newhash) : update symbolic storage links
3339:
3340: =item *
3341:
3342: symbread($filename) : return symbolic list entry (filename argument optional);
3343: returns the data handle
3344:
3345: =item *
3346:
3347: numval($salt) : return random seed value (addend for rndseed)
3348:
3349: =item *
3350:
3351: rndseed($symb,$courseid,$domain,$username) : create a random sum; returns
3352: a random seed, all arguments are optional, if they aren't sent it uses the
3353: environment to derive them. Note: if symb isn't sent and it can't get one
3354: from &symbread it will use the current time as its return value
3355:
3356: =item *
3357:
3358: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
3359: unfakeable, receipt
3360:
3361: =item *
3362:
3363: receipt() : API to ireceipt working off of ENV values; given out to users
3364:
3365: =item *
3366:
3367: getfile($file) : serves up a file, returns the contents of a file or -1;
3368: replicates and subscribes to the file
3369:
3370: =item *
3371:
3372: filelocation($dir,$file) : returns file system location of a file based on URI;
1.224 albertel 3373: meant to be "fairly clean" absolute reference, $dir is a directory that relative $file lookups are to looked in ($dir of /a/dir and a file of ../bob will become /a/bob)
1.191 harris41 3374:
3375: =item *
3376:
3377: hreflocation($dir,$file) : returns file system location or a URL; same as
3378: filelocation except for hrefs
3379:
3380: =item *
3381:
3382: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
3383:
3384: =item *
3385:
3386: escape() : unpack non-word characters into CGI-compatible hex codes
3387:
3388: =item *
3389:
3390: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
3391:
3392: =item *
3393:
3394: goodbye() : flush course logs and log shutting down; it is called in srm.conf
3395: as a PerlChildExitHandler
3396:
3397: =back
3398:
3399: =cut
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