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