Annotation of loncom/lonnet/perl/lonnet.pm, revision 1.208
1.1 albertel 1: # The LearningOnline Network
2: # TCP networking package
1.12 www 3: #
1.207 albertel 4: # $Id: lonnet.pm,v 1.206 2002/04/04 20:06:20 matthew 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;
1.8 www 630: my $transname="$filename.in.transfer";
1.17 www 631: if ((-e $filename) || (-e $transname)) { return OK; }
1.8 www 632: my $remoteurl=subscribe($filename);
1.64 www 633: if ($remoteurl =~ /^con_lost by/) {
634: &logthis("Subscribe returned $remoteurl: $filename");
1.8 www 635: return HTTP_SERVICE_UNAVAILABLE;
636: } elsif ($remoteurl eq 'not_found') {
637: &logthis("Subscribe returned not_found: $filename");
638: return HTTP_NOT_FOUND;
1.64 www 639: } elsif ($remoteurl =~ /^rejected by/) {
640: &logthis("Subscribe returned $remoteurl: $filename");
1.8 www 641: return FORBIDDEN;
1.20 www 642: } elsif ($remoteurl eq 'directory') {
643: return OK;
1.8 www 644: } else {
645: my @parts=split(/\//,$filename);
646: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
647: if ($path ne "$perlvar{'lonDocRoot'}/res") {
648: &logthis("Malconfiguration for replication: $filename");
649: return HTTP_BAD_REQUEST;
650: }
651: my $count;
652: for ($count=5;$count<$#parts;$count++) {
653: $path.="/$parts[$count]";
654: if ((-e $path)!=1) {
655: mkdir($path,0777);
656: }
657: }
658: my $ua=new LWP::UserAgent;
659: my $request=new HTTP::Request('GET',"$remoteurl");
660: my $response=$ua->request($request,$transname);
661: if ($response->is_error()) {
662: unlink($transname);
663: my $message=$response->status_line;
1.12 www 664: &logthis("<font color=blue>WARNING:"
665: ." LWP get: $message: $filename</font>");
1.8 www 666: return HTTP_SERVICE_UNAVAILABLE;
667: } else {
1.16 www 668: if ($remoteurl!~/\.meta$/) {
669: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
670: my $mresponse=$ua->request($mrequest,$filename.'.meta');
671: if ($mresponse->is_error()) {
672: unlink($filename.'.meta');
673: &logthis(
674: "<font color=yellow>INFO: No metadata: $filename</font>");
675: }
676: }
1.8 www 677: rename($transname,$filename);
678: return OK;
679: }
680: }
681: }
682:
1.15 www 683: # --------------------------------------------------------- Server Side Include
684:
685: sub ssi {
686:
1.23 www 687: my ($fn,%form)=@_;
1.15 www 688:
689: my $ua=new LWP::UserAgent;
1.23 www 690:
691: my $request;
692:
693: if (%form) {
694: $request=new HTTP::Request('POST',"http://".$ENV{'HTTP_HOST'}.$fn);
1.201 albertel 695: $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys %form));
1.23 www 696: } else {
697: $request=new HTTP::Request('GET',"http://".$ENV{'HTTP_HOST'}.$fn);
698: }
699:
1.15 www 700: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
701: my $response=$ua->request($request);
702:
703: return $response->content;
704: }
705:
1.14 www 706: # ------------------------------------------------------------------------- Log
707:
708: sub log {
709: my ($dom,$nam,$hom,$what)=@_;
1.47 www 710: return critical("log:$dom:$nam:$what",$hom);
1.157 www 711: }
712:
713: # ------------------------------------------------------------------ Course Log
714:
715: sub flushcourselogs {
716: &logthis('Flushing course log buffers');
1.191 harris41 717: foreach (keys %courselogs) {
1.157 www 718: my $crsid=$_;
1.204 albertel 719: &logthis(":$crsid:$coursehombuf{$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:
1.122 albertel 1142: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
1.109 www 1143:
1144: &devalidate($symb);
1145:
1146: $symb=escape($symb);
1.187 www 1147: if (!$namespace) {
1148: unless ($namespace=$ENV{'request.course.id'}) {
1149: return '';
1150: }
1151: }
1.122 albertel 1152: if (!$domain) { $domain=$ENV{'user.domain'}; }
1153: if (!$stuname) { $stuname=$ENV{'user.name'}; }
1154: if (!$home) { $home=$ENV{'user.home'}; }
1.12 www 1155: my $namevalue='';
1.191 harris41 1156: foreach (keys %$storehash) {
1.122 albertel 1157: $namevalue.=escape($_).'='.escape($$storehash{$_}).'&';
1.191 harris41 1158: }
1.12 www 1159: $namevalue=~s/\&$//;
1.187 www 1160: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
1.124 www 1161: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
1.9 www 1162: }
1163:
1.47 www 1164: # -------------------------------------------------------------- Critical Store
1165:
1166: sub cstore {
1.124 www 1167: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
1168: my $home='';
1169:
1.168 albertel 1170: if ($stuname) { $home=&homeserver($stuname,$domain); }
1.124 www 1171:
1.122 albertel 1172: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
1.109 www 1173:
1174: &devalidate($symb);
1175:
1176: $symb=escape($symb);
1.187 www 1177: if (!$namespace) {
1178: unless ($namespace=$ENV{'request.course.id'}) {
1179: return '';
1180: }
1181: }
1.122 albertel 1182: if (!$domain) { $domain=$ENV{'user.domain'}; }
1183: if (!$stuname) { $stuname=$ENV{'user.name'}; }
1184: if (!$home) { $home=$ENV{'user.home'}; }
1185:
1.47 www 1186: my $namevalue='';
1.191 harris41 1187: foreach (keys %$storehash) {
1.122 albertel 1188: $namevalue.=escape($_).'='.escape($$storehash{$_}).'&';
1.191 harris41 1189: }
1.47 www 1190: $namevalue=~s/\&$//;
1.187 www 1191: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
1.188 www 1192: return critical
1193: ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
1.47 www 1194: }
1195:
1.9 www 1196: # --------------------------------------------------------------------- Restore
1197:
1198: sub restore {
1.124 www 1199: my ($symb,$namespace,$domain,$stuname) = @_;
1200: my $home='';
1201:
1.168 albertel 1202: if ($stuname) { $home=&homeserver($stuname,$domain); }
1.124 www 1203:
1.122 albertel 1204: if (!$symb) {
1205: unless ($symb=escape(&symbread())) { return ''; }
1206: } else {
1207: $symb=&escape($symb);
1208: }
1.188 www 1209: if (!$namespace) {
1210: unless ($namespace=$ENV{'request.course.id'}) {
1211: return '';
1212: }
1213: }
1.122 albertel 1214: if (!$domain) { $domain=$ENV{'user.domain'}; }
1215: if (!$stuname) { $stuname=$ENV{'user.name'}; }
1216: if (!$home) { $home=$ENV{'user.home'}; }
1217: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
1218:
1.12 www 1219: my %returnhash=();
1.191 harris41 1220: foreach (split(/\&/,$answer)) {
1.12 www 1221: my ($name,$value)=split(/\=/,$_);
1222: $returnhash{&unescape($name)}=&unescape($value);
1.191 harris41 1223: }
1.75 www 1224: my $version;
1225: for ($version=1;$version<=$returnhash{'version'};$version++) {
1.191 harris41 1226: foreach (split(/\:/,$returnhash{$version.':keys'})) {
1.75 www 1227: $returnhash{$_}=$returnhash{$version.':'.$_};
1.191 harris41 1228: }
1.75 www 1229: }
1.13 www 1230: return %returnhash;
1.34 www 1231: }
1232:
1233: # ---------------------------------------------------------- Course Description
1234:
1235: sub coursedescription {
1236: my $courseid=shift;
1237: $courseid=~s/^\///;
1.49 www 1238: $courseid=~s/\_/\//g;
1.34 www 1239: my ($cdomain,$cnum)=split(/\//,$courseid);
1.129 albertel 1240: my $chome=&homeserver($cnum,$cdomain);
1.34 www 1241: if ($chome ne 'no_host') {
1.129 albertel 1242: my %returnhash=&dump('environment',$cdomain,$cnum);
1243: if (!exists($returnhash{'con_lost'})) {
1.96 www 1244: my $normalid=$cdomain.'_'.$cnum;
1.53 www 1245: my %envhash=();
1.129 albertel 1246: $returnhash{'home'}= $chome;
1247: $returnhash{'domain'} = $cdomain;
1248: $returnhash{'num'} = $cnum;
1.130 albertel 1249: while (my ($name,$value) = each %returnhash) {
1.53 www 1250: $envhash{'course.'.$normalid.'.'.$name}=$value;
1.129 albertel 1251: }
1.34 www 1252: $returnhash{'url'}='/res/'.declutter($returnhash{'url'});
1253: $returnhash{'fn'}=$perlvar{'lonDaemons'}.'/tmp/'.
1.38 www 1254: $ENV{'user.name'}.'_'.$cdomain.'_'.$cnum;
1.54 www 1255: $envhash{'course.'.$normalid.'.last_cache'}=time;
1.60 www 1256: $envhash{'course.'.$normalid.'.home'}=$chome;
1257: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
1258: $envhash{'course.'.$normalid.'.num'}=$cnum;
1.53 www 1259: &appenv(%envhash);
1.34 www 1260: return %returnhash;
1261: }
1262: }
1263: return ();
1.9 www 1264: }
1.1 albertel 1265:
1.103 harris41 1266: # -------------------------------------------------------- Get user privileges
1.11 www 1267:
1268: sub rolesinit {
1269: my ($domain,$username,$authhost)=@_;
1270: my $rolesdump=reply("dump:$domain:$username:roles",$authhost);
1.12 www 1271: if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return ''; }
1.11 www 1272: my %allroles=();
1273: my %thesepriv=();
1274: my $now=time;
1.21 www 1275: my $userroles="user.login.time=$now\n";
1.11 www 1276: my $thesestr;
1277:
1278: if ($rolesdump ne '') {
1.191 harris41 1279: foreach (split(/&/,$rolesdump)) {
1.21 www 1280: if ($_!~/^rolesdef\&/) {
1.11 www 1281: my ($area,$role)=split(/=/,$_);
1.21 www 1282: $area=~s/\_\w\w$//;
1.11 www 1283: my ($trole,$tend,$tstart)=split(/_/,$role);
1.21 www 1284: $userroles.='user.role.'.$trole.'.'.$area.'='.
1285: $tstart.'.'.$tend."\n";
1.11 www 1286: if ($tend!=0) {
1287: if ($tend<$now) {
1288: $trole='';
1289: }
1290: }
1291: if ($tstart!=0) {
1292: if ($tstart>$now) {
1293: $trole='';
1294: }
1295: }
1296: if (($area ne '') && ($trole ne '')) {
1.50 www 1297: my $spec=$trole.'.'.$area;
1.12 www 1298: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
1299: if ($trole =~ /^cr\//) {
1300: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
1301: my $homsvr=homeserver($rauthor,$rdomain);
1302: if ($hostname{$homsvr} ne '') {
1303: my $roledef=
1.21 www 1304: reply("get:$rdomain:$rauthor:roles:rolesdef_$rrole",
1.12 www 1305: $homsvr);
1306: if (($roledef ne 'con_lost') && ($roledef ne '')) {
1307: my ($syspriv,$dompriv,$coursepriv)=
1.21 www 1308: split(/\_/,unescape($roledef));
1.50 www 1309: $allroles{'cm./'}.=':'.$syspriv;
1310: $allroles{$spec.'./'}.=':'.$syspriv;
1.12 www 1311: if ($tdomain ne '') {
1.50 www 1312: $allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
1313: $allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
1.12 www 1314: if ($trest ne '') {
1.50 www 1315: $allroles{'cm.'.$area}.=':'.$coursepriv;
1316: $allroles{$spec.'.'.$area}.=':'.$coursepriv;
1.12 www 1317: }
1318: }
1319: }
1.11 www 1320: }
1.12 www 1321: } else {
1.50 www 1322: $allroles{'cm./'}.=':'.$pr{$trole.':s'};
1323: $allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
1.12 www 1324: if ($tdomain ne '') {
1.50 www 1325: $allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
1326: $allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
1.12 www 1327: if ($trest ne '') {
1.50 www 1328: $allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
1329: $allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
1.12 www 1330: }
1331: }
1.11 www 1332: }
1.12 www 1333: }
1334: }
1.191 harris41 1335: }
1.125 www 1336: my $adv=0;
1.128 www 1337: my $author=0;
1.191 harris41 1338: foreach (keys %allroles) {
1.11 www 1339: %thesepriv=();
1.146 www 1340: if (($_!~/^st/) && ($_!~/^ta/) && ($_!~/^cm/)) { $adv=1; }
1.128 www 1341: if (($_=~/^au/) || ($_=~/^ca/)) { $author=1; }
1.191 harris41 1342: foreach (split(/:/,$allroles{$_})) {
1.11 www 1343: if ($_ ne '') {
1.103 harris41 1344: my ($privilege,$restrictions)=split(/&/,$_);
1.11 www 1345: if ($restrictions eq '') {
1.103 harris41 1346: $thesepriv{$privilege}='F';
1.11 www 1347: } else {
1.103 harris41 1348: if ($thesepriv{$privilege} ne 'F') {
1349: $thesepriv{$privilege}.=$restrictions;
1.11 www 1350: }
1351: }
1352: }
1.191 harris41 1353: }
1.11 www 1354: $thesestr='';
1.191 harris41 1355: foreach (keys %thesepriv) { $thesestr.=':'.$_.'&'.$thesepriv{$_}; }
1.11 www 1356: $userroles.='user.priv.'.$_.'='.$thesestr."\n";
1.191 harris41 1357: }
1.128 www 1358: $userroles.='user.adv='.$adv."\n".
1359: 'user.author='.$author."\n";
1.126 www 1360: $ENV{'user.adv'}=$adv;
1.11 www 1361: }
1362: return $userroles;
1363: }
1364:
1.12 www 1365: # --------------------------------------------------------------- get interface
1366:
1367: sub get {
1.131 albertel 1368: my ($namespace,$storearr,$udomain,$uname)=@_;
1.12 www 1369: my $items='';
1.191 harris41 1370: foreach (@$storearr) {
1.12 www 1371: $items.=escape($_).'&';
1.191 harris41 1372: }
1.12 www 1373: $items=~s/\&$//;
1.131 albertel 1374: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
1375: if (!$uname) { $uname=$ENV{'user.name'}; }
1376: my $uhome=&homeserver($uname,$udomain);
1377:
1.133 albertel 1378: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
1.15 www 1379: my @pairs=split(/\&/,$rep);
1380: my %returnhash=();
1.42 www 1381: my $i=0;
1.191 harris41 1382: foreach (@$storearr) {
1.42 www 1383: $returnhash{$_}=unescape($pairs[$i]);
1384: $i++;
1.191 harris41 1385: }
1.15 www 1386: return %returnhash;
1.27 www 1387: }
1388:
1389: # --------------------------------------------------------------- del interface
1390:
1391: sub del {
1.133 albertel 1392: my ($namespace,$storearr,$udomain,$uname)=@_;
1.27 www 1393: my $items='';
1.191 harris41 1394: foreach (@$storearr) {
1.27 www 1395: $items.=escape($_).'&';
1.191 harris41 1396: }
1.27 www 1397: $items=~s/\&$//;
1.133 albertel 1398: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
1399: if (!$uname) { $uname=$ENV{'user.name'}; }
1400: my $uhome=&homeserver($uname,$udomain);
1401:
1402: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
1.15 www 1403: }
1404:
1405: # -------------------------------------------------------------- dump interface
1406:
1407: sub dump {
1.193 www 1408: my ($namespace,$udomain,$uname,$regexp)=@_;
1.129 albertel 1409: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
1410: if (!$uname) { $uname=$ENV{'user.name'}; }
1411: my $uhome=&homeserver($uname,$udomain);
1.193 www 1412: if ($regexp) {
1413: $regexp=&escape($regexp);
1414: } else {
1415: $regexp='.';
1416: }
1417: my $rep=reply("dump:$udomain:$uname:$namespace:$regexp",$uhome);
1.12 www 1418: my @pairs=split(/\&/,$rep);
1419: my %returnhash=();
1.191 harris41 1420: foreach (@pairs) {
1.12 www 1421: my ($key,$value)=split(/=/,$_);
1.29 www 1422: $returnhash{unescape($key)}=unescape($value);
1.191 harris41 1423: }
1.12 www 1424: return %returnhash;
1425: }
1426:
1427: # --------------------------------------------------------------- put interface
1428:
1429: sub put {
1.134 albertel 1430: my ($namespace,$storehash,$udomain,$uname)=@_;
1431: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
1432: if (!$uname) { $uname=$ENV{'user.name'}; }
1433: my $uhome=&homeserver($uname,$udomain);
1.12 www 1434: my $items='';
1.191 harris41 1435: foreach (keys %$storehash) {
1.134 albertel 1436: $items.=&escape($_).'='.&escape($$storehash{$_}).'&';
1.191 harris41 1437: }
1.12 www 1438: $items=~s/\&$//;
1.134 albertel 1439: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
1.47 www 1440: }
1441:
1442: # ------------------------------------------------------ critical put interface
1443:
1444: sub cput {
1.134 albertel 1445: my ($namespace,$storehash,$udomain,$uname)=@_;
1446: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
1447: if (!$uname) { $uname=$ENV{'user.name'}; }
1448: my $uhome=&homeserver($uname,$udomain);
1.47 www 1449: my $items='';
1.191 harris41 1450: foreach (keys %$storehash) {
1.134 albertel 1451: $items.=escape($_).'='.escape($$storehash{$_}).'&';
1.191 harris41 1452: }
1.47 www 1453: $items=~s/\&$//;
1.134 albertel 1454: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
1.12 www 1455: }
1456:
1457: # -------------------------------------------------------------- eget interface
1458:
1459: sub eget {
1.133 albertel 1460: my ($namespace,$storearr,$udomain,$uname)=@_;
1.12 www 1461: my $items='';
1.191 harris41 1462: foreach (@$storearr) {
1.12 www 1463: $items.=escape($_).'&';
1.191 harris41 1464: }
1.12 www 1465: $items=~s/\&$//;
1.133 albertel 1466: if (!$udomain) { $udomain=$ENV{'user.domain'}; }
1467: if (!$uname) { $uname=$ENV{'user.name'}; }
1468: my $uhome=&homeserver($uname,$udomain);
1469: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
1.12 www 1470: my @pairs=split(/\&/,$rep);
1471: my %returnhash=();
1.42 www 1472: my $i=0;
1.191 harris41 1473: foreach (@$storearr) {
1.42 www 1474: $returnhash{$_}=unescape($pairs[$i]);
1475: $i++;
1.191 harris41 1476: }
1.12 www 1477: return %returnhash;
1478: }
1479:
1.103 harris41 1480: # ------------------------------------------------- Check for a user privilege
1.12 www 1481:
1482: sub allowed {
1483: my ($priv,$uri)=@_;
1.152 www 1484:
1485: my $orguri=$uri;
1.52 www 1486: $uri=&declutter($uri);
1.29 www 1487:
1.54 www 1488: # Free bre access to adm and meta resources
1.29 www 1489:
1.54 www 1490: if ((($uri=~/^adm\//) || ($uri=~/\.meta$/)) && ($priv eq 'bre')) {
1.14 www 1491: return 'F';
1.159 www 1492: }
1493:
1494: # Free bre to public access
1495:
1496: if ($priv eq 'bre') {
1497: if (&metadata($uri,'copyright') eq 'public') { return 'F'; }
1.14 www 1498: }
1.29 www 1499:
1.52 www 1500: my $thisallowed='';
1501: my $statecond=0;
1502: my $courseprivid='';
1503:
1504: # Course
1505:
1506: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'}=~/$priv\&([^\:]*)/) {
1507: $thisallowed.=$1;
1508: }
1.29 www 1509:
1.52 www 1510: # Domain
1511:
1512: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
1513: =~/$priv\&([^\:]*)/) {
1.12 www 1514: $thisallowed.=$1;
1515: }
1.52 www 1516:
1517: # Course: uri itself is a course
1.66 www 1518: my $courseuri=$uri;
1519: $courseuri=~s/\_(\d)/\/$1/;
1.83 www 1520: $courseuri=~s/^([^\/])/\/$1/;
1.81 www 1521:
1.83 www 1522: if ($ENV{'user.priv.'.$ENV{'request.role'}.'.'.$courseuri}
1.52 www 1523: =~/$priv\&([^\:]*)/) {
1.12 www 1524: $thisallowed.=$1;
1525: }
1.29 www 1526:
1.52 www 1527: # Full access at system, domain or course-wide level? Exit.
1.29 www 1528:
1529: if ($thisallowed=~/F/) {
1530: return 'F';
1531: }
1532:
1.52 www 1533: # If this is generating or modifying users, exit with special codes
1.29 www 1534:
1.166 www 1535: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:'=~/\:$priv\:/) {
1.52 www 1536: return $thisallowed;
1537: }
1538: #
1.103 harris41 1539: # Gathered so far: system, domain and course wide privileges
1.52 www 1540: #
1541: # Course: See if uri or referer is an individual resource that is part of
1542: # the course
1543:
1544: if ($ENV{'request.course.id'}) {
1545: $courseprivid=$ENV{'request.course.id'};
1546: if ($ENV{'request.course.sec'}) {
1547: $courseprivid.='/'.$ENV{'request.course.sec'};
1548: }
1549: $courseprivid=~s/\_/\//;
1550: my $checkreferer=1;
1551: my @uriparts=split(/\//,$uri);
1552: my $filename=$uriparts[$#uriparts];
1553: my $pathname=$uri;
1554: $pathname=~s/\/$filename$//;
1555: if ($ENV{'acc.res.'.$ENV{'request.course.id'}.'.'.$pathname}=~
1.54 www 1556: /\&$filename\:([\d\|]+)\&/) {
1.52 www 1557: $statecond=$1;
1558: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.$courseprivid}
1559: =~/$priv\&([^\:]*)/) {
1560: $thisallowed.=$1;
1561: $checkreferer=0;
1562: }
1.29 www 1563: }
1.83 www 1564:
1.148 www 1565: if ($checkreferer) {
1.152 www 1566: my $refuri=$ENV{'httpref.'.$orguri};
1.148 www 1567:
1568: unless ($refuri) {
1.191 harris41 1569: foreach (keys %ENV) {
1.148 www 1570: if ($_=~/^httpref\..*\*/) {
1571: my $pattern=$_;
1.156 www 1572: $pattern=~s/^httpref\.\/res\///;
1.148 www 1573: $pattern=~s/\*/\[\^\/\]\+/g;
1574: $pattern=~s/\//\\\//g;
1.152 www 1575: if ($orguri=~/$pattern/) {
1.148 www 1576: $refuri=$ENV{$_};
1577: }
1578: }
1.191 harris41 1579: }
1.148 www 1580: }
1581: if ($refuri) {
1.152 www 1582: $refuri=&declutter($refuri);
1.53 www 1583: my @uriparts=split(/\//,$refuri);
1.52 www 1584: my $filename=$uriparts[$#uriparts];
1.53 www 1585: my $pathname=$refuri;
1.52 www 1586: $pathname=~s/\/$filename$//;
1.53 www 1587: if ($ENV{'acc.res.'.$ENV{'request.course.id'}.'.'.$pathname}=~
1.54 www 1588: /\&$filename\:([\d\|]+)\&/) {
1.53 www 1589: my $refstatecond=$1;
1.52 www 1590: if ($ENV{'user.priv.'.$ENV{'request.role'}.'./'.$courseprivid}
1591: =~/$priv\&([^\:]*)/) {
1592: $thisallowed.=$1;
1.53 www 1593: $uri=$refuri;
1594: $statecond=$refstatecond;
1.52 www 1595: }
1596: }
1.148 www 1597: }
1.29 www 1598: }
1.52 www 1599: }
1.29 www 1600:
1.52 www 1601: #
1.103 harris41 1602: # Gathered now: all privileges that could apply, and condition number
1.52 www 1603: #
1604: #
1605: # Full or no access?
1606: #
1.29 www 1607:
1.52 www 1608: if ($thisallowed=~/F/) {
1609: return 'F';
1610: }
1.29 www 1611:
1.52 www 1612: unless ($thisallowed) {
1613: return '';
1614: }
1.29 www 1615:
1.52 www 1616: # Restrictions exist, deal with them
1617: #
1618: # C:according to course preferences
1619: # R:according to resource settings
1620: # L:unless locked
1621: # X:according to user session state
1622: #
1623:
1624: # Possibly locked functionality, check all courses
1.54 www 1625: # Locks might take effect only after 10 minutes cache expiration for other
1626: # courses, and 2 minutes for current course
1.52 www 1627:
1628: my $envkey;
1629: if ($thisallowed=~/L/) {
1630: foreach $envkey (keys %ENV) {
1.54 www 1631: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
1632: my $courseid=$2;
1633: my $roleid=$1.'.'.$2;
1.92 www 1634: $courseid=~s/^\///;
1.54 www 1635: my $expiretime=600;
1636: if ($ENV{'request.role'} eq $roleid) {
1637: $expiretime=120;
1638: }
1639: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
1640: my $prefix='course.'.$cdom.'_'.$cnum.'.';
1641: if ((time-$ENV{$prefix.'last_cache'})>$expiretime) {
1642: &coursedescription($courseid);
1643: }
1644: if (($ENV{$prefix.'res.'.$uri.'.lock.sections'}=~/\,$csec\,/)
1645: || ($ENV{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
1646: if ($ENV{$prefix.'res.'.$uri.'.lock.expire'}>time) {
1.57 www 1647: &log($ENV{'user.domain'},$ENV{'user.name'},
1648: $ENV{'user.host'},
1649: 'Locked by res: '.$priv.' for '.$uri.' due to '.
1.52 www 1650: $cdom.'/'.$cnum.'/'.$csec.' expire '.
1.54 www 1651: $ENV{$prefix.'priv.'.$priv.'.lock.expire'});
1.52 www 1652: return '';
1653: }
1654: }
1.54 www 1655: if (($ENV{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,$csec\,/)
1656: || ($ENV{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
1657: if ($ENV{'priv.'.$priv.'.lock.expire'}>time) {
1.57 www 1658: &log($ENV{'user.domain'},$ENV{'user.name'},
1659: $ENV{'user.host'},
1660: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
1.52 www 1661: $cdom.'/'.$cnum.'/'.$csec.' expire '.
1.54 www 1662: $ENV{$prefix.'priv.'.$priv.'.lock.expire'});
1.52 www 1663: return '';
1664: }
1665: }
1666: }
1.29 www 1667: }
1.52 www 1668: }
1669:
1670: #
1671: # Rest of the restrictions depend on selected course
1672: #
1673:
1674: unless ($ENV{'request.course.id'}) {
1675: return '1';
1676: }
1.29 www 1677:
1.52 www 1678: #
1679: # Now user is definitely in a course
1680: #
1.53 www 1681:
1682:
1683: # Course preferences
1684:
1685: if ($thisallowed=~/C/) {
1.54 www 1686: my $rolecode=(split(/\./,$ENV{'request.role'}))[0];
1687: if ($ENV{'course.'.$ENV{'request.course.id'}.'.'.$priv.'.roles.denied'}
1.194 www 1688: =~/$rolecode/) {
1.57 www 1689: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
1690: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
1.54 www 1691: $ENV{'request.course.id'});
1692: return '';
1693: }
1.53 www 1694: }
1695:
1696: # Resource preferences
1697:
1698: if ($thisallowed=~/R/) {
1.54 www 1699: my $rolecode=(split(/\./,$ENV{'request.role'}))[0];
1700: my $filename=$perlvar{'lonDocRoot'}.'/res/'.$uri.'.meta';
1701: if (-e $filename) {
1702: my @content;
1703: {
1704: my $fh=Apache::File->new($filename);
1705: @content=<$fh>;
1706: }
1707: if (join('',@content)=~
1708: /\<roledeny[^\>]*\>[^\<]*$rolecode[^\<]*\<\/roledeny\>/) {
1.57 www 1709: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.host'},
1710: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
1.54 www 1711: return '';
1712:
1713: }
1714: }
1.53 www 1715: }
1.30 www 1716:
1.52 www 1717: # Restricted by state?
1.30 www 1718:
1.52 www 1719: if ($thisallowed=~/X/) {
1720: if (&condval($statecond)) {
1721: return '2';
1722: } else {
1723: return '';
1724: }
1725: }
1.30 www 1726:
1.52 www 1727: return 'F';
1.12 www 1728: }
1729:
1730: # ----------------------------------------------------------------- Define Role
1731:
1732: sub definerole {
1733: if (allowed('mcr','/')) {
1734: my ($rolename,$sysrole,$domrole,$courole)=@_;
1.191 harris41 1735: foreach (split('/',$sysrole)) {
1.21 www 1736: my ($crole,$cqual)=split(/\&/,$_);
1737: if ($pr{'cr:s'}!~/$crole/) { return "refused:s:$crole"; }
1738: if ($pr{'cr:s'}=~/$crole\&/) {
1739: if ($pr{'cr:s'}!~/$crole\&\w*$cqual/) {
1740: return "refused:s:$crole&$cqual";
1741: }
1742: }
1.191 harris41 1743: }
1744: foreach (split('/',$domrole)) {
1.21 www 1745: my ($crole,$cqual)=split(/\&/,$_);
1746: if ($pr{'cr:d'}!~/$crole/) { return "refused:d:$crole"; }
1747: if ($pr{'cr:d'}=~/$crole\&/) {
1748: if ($pr{'cr:d'}!~/$crole\&\w*$cqual/) {
1749: return "refused:d:$crole&$cqual";
1750: }
1751: }
1.191 harris41 1752: }
1753: foreach (split('/',$courole)) {
1.21 www 1754: my ($crole,$cqual)=split(/\&/,$_);
1755: if ($pr{'cr:c'}!~/$crole/) { return "refused:c:$crole"; }
1756: if ($pr{'cr:c'}=~/$crole\&/) {
1757: if ($pr{'cr:c'}!~/$crole\&\w*$cqual/) {
1758: return "refused:c:$crole&$cqual";
1759: }
1760: }
1.191 harris41 1761: }
1.12 www 1762: my $command="encrypt:rolesput:$ENV{'user.domain'}:$ENV{'user.name'}:".
1763: "$ENV{'user.domain'}:$ENV{'user.name'}:".
1.21 www 1764: "rolesdef_$rolename=".
1765: escape($sysrole.'_'.$domrole.'_'.$courole);
1.12 www 1766: return reply($command,$ENV{'user.home'});
1767: } else {
1768: return 'refused';
1769: }
1.105 harris41 1770: }
1771:
1772: # ---------------- Make a metadata query against the network of library servers
1773:
1774: sub metadata_query {
1.116 harris41 1775: my ($query,$custom,$customshow)=@_;
1.120 harris41 1776: my %rhash;
1.123 harris41 1777: for my $server (keys %libserv) {
1.118 harris41 1778: unless ($custom or $customshow) {
1779: my $reply=&reply("querysend:".&escape($query),$server);
1780: $rhash{$server}=$reply;
1781: }
1782: else {
1783: my $reply=&reply("querysend:".&escape($query).':'.
1784: &escape($custom).':'.&escape($customshow),
1785: $server);
1786: $rhash{$server}=$reply;
1787: }
1.112 harris41 1788: }
1.118 harris41 1789: return \%rhash;
1.12 www 1790: }
1791:
1792: # ------------------------------------------------------------------ Plain Text
1793:
1794: sub plaintext {
1.22 www 1795: my $short=shift;
1796: return $prp{$short};
1.12 www 1797: }
1798:
1799: # ----------------------------------------------------------------- Assign Role
1800:
1801: sub assignrole {
1.21 www 1802: my ($udom,$uname,$url,$role,$end,$start)=@_;
1803: my $mrole;
1804: if ($role =~ /^cr\//) {
1.104 www 1805: unless (&allowed('ccr',$url)) {
1806: &logthis('Refused custom assignrole: '.
1807: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
1808: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
1809: return 'refused';
1810: }
1.21 www 1811: $mrole='cr';
1812: } else {
1.82 www 1813: my $cwosec=$url;
1.83 www 1814: $cwosec=~s/^\/(\w+)\/(\w+)\/.*/$1\/$2/;
1.104 www 1815: unless (&allowed('c'.$role,$cwosec)) {
1816: &logthis('Refused assignrole: '.
1817: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
1818: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
1819: return 'refused';
1820: }
1.21 www 1821: $mrole=$role;
1822: }
1823: my $command="encrypt:rolesput:$ENV{'user.domain'}:$ENV{'user.name'}:".
1824: "$udom:$uname:$url".'_'."$mrole=$role";
1.81 www 1825: if ($end) { $command.='_'.$end; }
1.21 www 1826: if ($start) {
1827: if ($end) {
1.81 www 1828: $command.='_'.$start;
1.21 www 1829: } else {
1.81 www 1830: $command.='_0_'.$start;
1.21 www 1831: }
1832: }
1833: return &reply($command,&homeserver($uname,$udom));
1.169 harris41 1834: }
1835:
1836: # -------------------------------------------------- Modify user authentication
1.197 www 1837: # Overrides without validation
1838:
1.169 harris41 1839: sub modifyuserauth {
1840: my ($udom,$uname,$umode,$upass)=@_;
1841: my $uhome=&homeserver($uname,$udom);
1.197 www 1842: unless (&allowed('mau',$udom)) { return 'refused'; }
1843: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
1.169 harris41 1844: $umode.' by '.$ENV{'user.name'}.' at '.$ENV{'user.domain'});
1845: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
1846: &escape($upass),$uhome);
1.197 www 1847: &log($ENV{'user.domain'},$ENV{'user.name'},$ENV{'user.home'},
1848: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
1849: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
1850: &log($udom,,$uname,$uhome,
1851: 'Authentication changed by '.$ENV{'user.domain'}.', '.
1852: $ENV{'user.name'}.', '.$umode.
1853: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
1.169 harris41 1854: unless ($reply eq 'ok') {
1.197 www 1855: &logthis('Authentication mode error: '.$reply);
1.169 harris41 1856: return 'error: '.$reply;
1857: }
1.170 harris41 1858: return 'ok';
1.80 www 1859: }
1860:
1.81 www 1861: # --------------------------------------------------------------- Modify a user
1.80 www 1862:
1.81 www 1863: sub modifyuser {
1.206 matthew 1864: my ($udom, $uname, $uid,
1865: $umode, $upass, $first,
1866: $middle, $last, $gene,
1867: $forceid, $desiredhome)=@_;
1.198 www 1868: $udom=~s/\W//g;
1869: $uname=~s/\W//g;
1.81 www 1870: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
1.80 www 1871: $umode.', '.$first.', '.$middle.', '.
1.206 matthew 1872: $last.', '.$gene.'(forceid: '.$forceid.')'.
1873: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
1874: ' desiredhome not specified').
1875: ' by '.$ENV{'user.name'}.' at '.$ENV{'user.domain'});
1.80 www 1876: my $uhome=&homeserver($uname,$udom);
1877: # ----------------------------------------------------------------- Create User
1.81 www 1878: if (($uhome eq 'no_host') && ($umode) && ($upass)) {
1.80 www 1879: my $unhome='';
1880: if ($ENV{'course.'.$ENV{'request.course.id'}.'.domain'} eq $udom) {
1881: $unhome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
1.206 matthew 1882: } elsif (defined($desiredhome) && $hostdom{$desiredhome} eq $udom) {
1883: $unhome = $desiredhome;
1.80 www 1884: } else {
1885: my $tryserver;
1.81 www 1886: my $loadm=10000000;
1.80 www 1887: foreach $tryserver (keys %libserv) {
1888: if ($hostdom{$tryserver} eq $udom) {
1889: my $answer=reply('load',$tryserver);
1890: if (($answer=~/\d+/) && ($answer<$loadm)) {
1891: $loadm=$answer;
1892: $unhome=$tryserver;
1893: }
1894: }
1895: }
1896: }
1897: if (($unhome eq '') || ($unhome eq 'no_host')) {
1.206 matthew 1898: return 'error: unable to find a home server for '.$uname.
1899: ' in domain '.$udom;
1.80 www 1900: }
1901: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
1902: &escape($upass),$unhome);
1903: unless ($reply eq 'ok') {
1904: return 'error: '.$reply;
1905: }
1906: $uhome=&homeserver($uname,$udom);
1907: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
1908: return 'error: verify home';
1909: }
1910: }
1911: # ---------------------------------------------------------------------- Add ID
1912: if ($uid) {
1913: $uid=~tr/A-Z/a-z/;
1914: my %uidhash=&idrget($udom,$uname);
1.196 www 1915: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
1916: && (!$forceid)) {
1.80 www 1917: unless ($uid eq $uidhash{$uname}) {
1918: return 'error: mismatch '.$uidhash{$uname}.' versus '.$uid;
1919: }
1920: } else {
1921: &idput($udom,($uname => $uid));
1922: }
1923: }
1924: # -------------------------------------------------------------- Add names, etc
1.134 albertel 1925: my %names=&get('environment',
1926: ['firstname','middlename','lastname','generation'],
1927: $udom,$uname);
1.207 albertel 1928: if ($names{'firstname'} =~ m/^error:.*/) { %names=(); }
1.134 albertel 1929: if ($first) { $names{'firstname'} = $first; }
1930: if ($middle) { $names{'middlename'} = $middle; }
1931: if ($last) { $names{'lastname'} = $last; }
1932: if ($gene) { $names{'generation'} = $gene; }
1933: my $reply = &put('environment', \%names, $udom,$uname);
1934: if ($reply ne 'ok') { return 'error: '.$reply; }
1.81 www 1935: &logthis('Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
1.80 www 1936: $umode.', '.$first.', '.$middle.', '.
1937: $last.', '.$gene.' by '.
1938: $ENV{'user.name'}.' at '.$ENV{'user.domain'});
1.134 albertel 1939: return 'ok';
1.80 www 1940: }
1941:
1.81 www 1942: # -------------------------------------------------------------- Modify student
1.80 www 1943:
1.81 www 1944: sub modifystudent {
1945: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
1.197 www 1946: $end,$start,$forceid)=@_;
1.81 www 1947: my $cid='';
1948: unless ($cid=$ENV{'request.course.id'}) {
1.80 www 1949: return 'not_in_class';
1950: }
1951: # --------------------------------------------------------------- Make the user
1.81 www 1952: my $reply=&modifyuser
1.197 www 1953: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid);
1.80 www 1954: unless ($reply eq 'ok') { return $reply; }
1.81 www 1955: my $uhome=&homeserver($uname,$udom);
1956: if (($uhome eq '') || ($uhome eq 'no_host')) {
1957: return 'error: no such user';
1958: }
1.80 www 1959: # -------------------------------------------------- Add student to course list
1.160 www 1960: $reply=critical('put:'.$ENV{'course.'.$cid.'.domain'}.':'.
1.81 www 1961: $ENV{'course.'.$cid.'.num'}.':classlist:'.
1962: &escape($uname.':'.$udom).'='.
1963: &escape($end.':'.$start),
1964: $ENV{'course.'.$cid.'.home'});
1965: unless (($reply eq 'ok') || ($reply eq 'delayed')) {
1966: return 'error: '.$reply;
1967: }
1.80 www 1968: # ---------------------------------------------------- Add student role to user
1.83 www 1969: my $uurl='/'.$cid;
1.81 www 1970: $uurl=~s/\_/\//g;
1971: if ($usec) {
1972: $uurl.='/'.$usec;
1973: }
1974: return &assignrole($udom,$uname,$uurl,'st',$end,$start);
1.21 www 1975: }
1976:
1.84 www 1977: # ------------------------------------------------- Write to course preferences
1978:
1979: sub writecoursepref {
1980: my ($courseid,%prefs)=@_;
1981: $courseid=~s/^\///;
1982: $courseid=~s/\_/\//g;
1983: my ($cdomain,$cnum)=split(/\//,$courseid);
1984: my $chome=homeserver($cnum,$cdomain);
1985: if (($chome eq '') || ($chome eq 'no_host')) {
1986: return 'error: no such course';
1987: }
1988: my $cstring='';
1.191 harris41 1989: foreach (keys %prefs) {
1.84 www 1990: $cstring.=escape($_).'='.escape($prefs{$_}).'&';
1.191 harris41 1991: }
1.84 www 1992: $cstring=~s/\&$//;
1993: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
1994: }
1995:
1996: # ---------------------------------------------------------- Make/modify course
1997:
1998: sub createcourse {
1999: my ($udom,$description,$url)=@_;
2000: $url=&declutter($url);
2001: my $cid='';
2002: unless (&allowed('ccc',$ENV{'user.domain'})) {
2003: return 'refused';
2004: }
2005: unless ($udom eq $ENV{'user.domain'}) {
2006: return 'refused';
2007: }
2008: # ------------------------------------------------------------------- Create ID
2009: my $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
2010: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
2011: # ----------------------------------------------- Make sure that does not exist
2012: my $uhome=&homeserver($uname,$udom);
2013: unless (($uhome eq '') || ($uhome eq 'no_host')) {
2014: $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
2015: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
2016: $uhome=&homeserver($uname,$udom);
2017: unless (($uhome eq '') || ($uhome eq 'no_host')) {
2018: return 'error: unable to generate unique course-ID';
2019: }
2020: }
2021: # ------------------------------------------------------------- Make the course
2022: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
2023: $ENV{'user.home'});
2024: unless ($reply eq 'ok') { return 'error: '.$reply; }
1.160 www 2025: $uhome=&homeserver($uname,$udom);
1.84 www 2026: if (($uhome eq '') || ($uhome eq 'no_host')) {
2027: return 'error: no such course';
2028: }
2029: &writecoursepref($udom.'_'.$uname,
2030: ('description' => $description,
2031: 'url' => $url));
2032: return '/'.$udom.'/'.$uname;
2033: }
2034:
1.21 www 2035: # ---------------------------------------------------------- Assign Custom Role
2036:
2037: sub assigncustomrole {
2038: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start)=@_;
2039: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
2040: $end,$start);
2041: }
2042:
2043: # ----------------------------------------------------------------- Revoke Role
2044:
2045: sub revokerole {
2046: my ($udom,$uname,$url,$role)=@_;
2047: my $now=time;
2048: return &assignrole($udom,$uname,$url,$role,$now);
2049: }
2050:
2051: # ---------------------------------------------------------- Revoke Custom Role
2052:
2053: sub revokecustomrole {
2054: my ($udom,$uname,$url,$rdom,$rnam,$rolename)=@_;
2055: my $now=time;
2056: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now);
1.17 www 2057: }
2058:
2059: # ------------------------------------------------------------ Directory lister
2060:
2061: sub dirlist {
2062: my $uri=shift;
1.18 www 2063: $uri=~s/^\///;
2064: $uri=~s/\/$//;
1.19 www 2065: my ($res,$udom,$uname,@rest)=split(/\//,$uri);
2066: if ($udom) {
2067: if ($uname) {
2068: my $listing=reply('ls:'.$perlvar{'lonDocRoot'}.'/'.$uri,
2069: homeserver($uname,$udom));
2070: return split(/:/,$listing);
2071: } else {
2072: my $tryserver;
2073: my %allusers=();
2074: foreach $tryserver (keys %libserv) {
2075: if ($hostdom{$tryserver} eq $udom) {
2076: my $listing=reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.$udom,
2077: $tryserver);
2078: if (($listing ne 'no_such_dir') && ($listing ne 'empty')
2079: && ($listing ne 'con_lost')) {
1.191 harris41 2080: foreach (split(/:/,$listing)) {
1.19 www 2081: my ($entry,@stat)=split(/&/,$_);
2082: $allusers{$entry}=1;
1.191 harris41 2083: }
1.19 www 2084: }
2085: }
2086: }
2087: my $alluserstr='';
1.191 harris41 2088: foreach (sort keys %allusers) {
1.19 www 2089: $alluserstr.=$_.'&user:';
1.191 harris41 2090: }
1.19 www 2091: $alluserstr=~s/:$//;
2092: return split(/:/,$alluserstr);
2093: }
2094: } else {
2095: my $tryserver;
2096: my %alldom=();
2097: foreach $tryserver (keys %libserv) {
2098: $alldom{$hostdom{$tryserver}}=1;
2099: }
2100: my $alldomstr='';
1.191 harris41 2101: foreach (sort keys %alldom) {
1.19 www 2102: $alldomstr.=$perlvar{'lonDocRoot'}.'/res/'.$_.'&domain:';
1.191 harris41 2103: }
1.19 www 2104: $alldomstr=~s/:$//;
2105: return split(/:/,$alldomstr);
2106: }
1.26 www 2107: }
2108:
2109: # -------------------------------------------------------- Value of a Condition
2110:
1.40 www 2111: sub directcondval {
2112: my $number=shift;
2113: if ($ENV{'user.state.'.$ENV{'request.course.id'}}) {
2114: return substr($ENV{'user.state.'.$ENV{'request.course.id'}},$number,1);
2115: } else {
2116: return 2;
2117: }
2118: }
2119:
1.26 www 2120: sub condval {
2121: my $condidx=shift;
2122: my $result=0;
1.54 www 2123: my $allpathcond='';
1.191 harris41 2124: foreach (split(/\|/,$condidx)) {
1.54 www 2125: if (defined($ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$_})) {
2126: $allpathcond.=
2127: '('.$ENV{'acc.cond.'.$ENV{'request.course.id'}.'.'.$_}.')|';
2128: }
1.191 harris41 2129: }
1.54 www 2130: $allpathcond=~s/\|$//;
1.33 www 2131: if ($ENV{'request.course.id'}) {
1.54 www 2132: if ($allpathcond) {
1.26 www 2133: my $operand='|';
2134: my @stack;
1.191 harris41 2135: foreach ($allpathcond=~/(\d+|\(|\)|\&|\|)/g) {
1.26 www 2136: if ($_ eq '(') {
2137: push @stack,($operand,$result)
2138: } elsif ($_ eq ')') {
2139: my $before=pop @stack;
2140: if (pop @stack eq '&') {
2141: $result=$result>$before?$before:$result;
2142: } else {
2143: $result=$result>$before?$result:$before;
2144: }
2145: } elsif (($_ eq '&') || ($_ eq '|')) {
2146: $operand=$_;
2147: } else {
1.40 www 2148: my $new=directcondval($_);
1.26 www 2149: if ($operand eq '&') {
2150: $result=$result>$new?$new:$result;
2151: } else {
2152: $result=$result>$new?$result:$new;
1.191 harris41 2153: }
1.26 www 2154: }
1.191 harris41 2155: }
1.26 www 2156: }
2157: }
2158: return $result;
1.28 www 2159: }
2160:
1.200 www 2161: # --------------------------------------------------- Course Resourcedata Query
2162:
2163: sub courseresdata {
2164: my ($coursenum,$coursedomain,@which)=@_;
2165: my $coursehom=&homeserver($coursenum,$coursedomain);
2166: my $hashid=$coursenum.':'.$coursedomain;
2167: unless (defined($courseresdatacache{$hashid.'.time'})) {
2168: unless (time-$courseresdatacache{$hashid.'.time'}<300) {
2169: my $coursehom=&homeserver($coursenum,$coursedomain);
2170: if ($coursehom) {
2171: my $dumpreply=&reply('dump:'.$coursedomain.':'.$coursenum.
2172: ':resourcedata:.',$coursehom);
2173: unless ($dumpreply=~/^error\:/) {
2174: $courseresdatacache{$hashid.'.time'}=time;
2175: $courseresdatacache{$hashid}=$dumpreply;
2176: }
2177: }
2178: }
2179: }
2180: my @pairs=split(/\&/,$courseresdatacache{$hashid});
2181: my %returnhash=();
2182: foreach (@pairs) {
2183: my ($key,$value)=split(/=/,$_);
2184: $returnhash{unescape($key)}=unescape($value);
2185: }
2186: my $item;
2187: foreach $item (@which) {
2188: if ($returnhash{$item}) { return $returnhash{$item}; }
2189: }
2190: return '';
2191: }
2192:
1.28 www 2193: # --------------------------------------------------------- Value of a Variable
2194:
1.58 www 2195: sub EXT {
1.147 www 2196: my ($varname,$symbparm)=@_;
1.68 www 2197: unless ($varname) { return ''; }
1.48 www 2198: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
2199: my $rest;
2200: if ($therest[0]) {
2201: $rest=join('.',@therest);
2202: } else {
2203: $rest='';
2204: }
1.57 www 2205: my $qualifierrest=$qualifier;
2206: if ($rest) { $qualifierrest.='.'.$rest; }
2207: my $spacequalifierrest=$space;
2208: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
1.28 www 2209: if ($realm eq 'user') {
1.48 www 2210: # --------------------------------------------------------------- user.resource
2211: if ($space eq 'resource') {
1.122 albertel 2212: my %restored=&restore();
1.57 www 2213: return $restored{$qualifierrest};
1.48 www 2214: # ----------------------------------------------------------------- user.access
2215: } elsif ($space eq 'access') {
2216: return &allowed($qualifier,$rest);
2217: # ------------------------------------------ user.preferences, user.environment
2218: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
1.57 www 2219: return $ENV{join('.',('environment',$qualifierrest))};
1.48 www 2220: # ----------------------------------------------------------------- user.course
2221: } elsif ($space eq 'course') {
2222: return $ENV{join('.',('request.course',$qualifier))};
2223: # ------------------------------------------------------------------- user.role
2224: } elsif ($space eq 'role') {
2225: my ($role,$where)=split(/\./,$ENV{'request.role'});
2226: if ($qualifier eq 'value') {
2227: return $role;
2228: } elsif ($qualifier eq 'extent') {
2229: return $where;
2230: }
2231: # ----------------------------------------------------------------- user.domain
2232: } elsif ($space eq 'domain') {
2233: return $ENV{'user.domain'};
2234: # ------------------------------------------------------------------- user.name
2235: } elsif ($space eq 'name') {
2236: return $ENV{'user.name'};
2237: # ---------------------------------------------------- Any other user namespace
1.29 www 2238: } else {
1.48 www 2239: my $item=($rest)?$qualifier.'.'.$rest:$qualifier;
1.131 albertel 2240: my %reply=&get($space,[$item]);
1.48 www 2241: return $reply{$item};
2242: }
2243: } elsif ($realm eq 'request') {
2244: # ------------------------------------------------------------- request.browser
2245: if ($space eq 'browser') {
2246: return $ENV{'browser.'.$qualifier};
1.57 www 2247: # ------------------------------------------------------------ request.filename
2248: } else {
2249: return $ENV{'request.'.$spacequalifierrest};
1.29 www 2250: }
1.28 www 2251: } elsif ($realm eq 'course') {
1.48 www 2252: # ---------------------------------------------------------- course.description
1.127 ng 2253: return $ENV{'course.'.$ENV{'request.course.id'}.'.'.
1.57 www 2254: $spacequalifierrest};
2255: } elsif ($realm eq 'resource') {
1.127 ng 2256: if ($ENV{'request.course.id'}) {
1.165 www 2257:
2258: # print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
2259:
2260:
1.60 www 2261: # ----------------------------------------------------- Cascading lookup scheme
1.147 www 2262: my $symbp;
2263: if ($symbparm) {
2264: $symbp=$symbparm;
2265: } else {
2266: $symbp=&symbread();
2267: }
1.127 ng 2268: my $mapp=(split(/\_\_\_/,$symbp))[0];
1.69 www 2269:
1.127 ng 2270: my $symbparm=$symbp.'.'.$spacequalifierrest;
2271: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
1.69 www 2272:
1.127 ng 2273: my $seclevel=
1.69 www 2274: $ENV{'request.course.id'}.'.['.
2275: $ENV{'request.course.sec'}.'].'.$spacequalifierrest;
1.127 ng 2276: my $seclevelr=
1.69 www 2277: $ENV{'request.course.id'}.'.['.
2278: $ENV{'request.course.sec'}.'].'.$symbparm;
1.127 ng 2279: my $seclevelm=
1.69 www 2280: $ENV{'request.course.id'}.'.['.
2281: $ENV{'request.course.sec'}.'].'.$mapparm;
2282:
1.127 ng 2283: my $courselevel=
1.60 www 2284: $ENV{'request.course.id'}.'.'.$spacequalifierrest;
1.127 ng 2285: my $courselevelr=
1.69 www 2286: $ENV{'request.course.id'}.'.'.$symbparm;
1.127 ng 2287: my $courselevelm=
1.69 www 2288: $ENV{'request.course.id'}.'.'.$mapparm;
2289:
1.60 www 2290: # ----------------------------------------------------------- first, check user
1.127 ng 2291: my %resourcedata=get('resourcedata',
1.131 albertel 2292: [$courselevelr,$courselevelm,$courselevel]);
1.127 ng 2293: if (($resourcedata{$courselevelr}!~/^error\:/) &&
2294: ($resourcedata{$courselevelr}!~/^con_lost/)) {
1.69 www 2295:
1.127 ng 2296: if ($resourcedata{$courselevelr}) {
2297: return $resourcedata{$courselevelr}; }
2298: if ($resourcedata{$courselevelm}) {
2299: return $resourcedata{$courselevelm}; }
2300: if ($resourcedata{$courselevel}) { return $resourcedata{$courselevel}; }
1.69 www 2301:
1.94 www 2302: } else {
2303: if ($resourcedata{$courselevelr}!~/No such file/) {
2304: &logthis("<font color=blue>WARNING:".
2305: " Trying to get resource data for ".$ENV{'user.name'}." at "
2306: .$ENV{'user.domain'}.": ".$resourcedata{$courselevelr}.
2307: "</font>");
2308: }
1.63 www 2309: }
1.95 www 2310:
1.60 www 2311: # -------------------------------------------------------- second, check course
1.96 www 2312:
1.200 www 2313: my $coursereply=&courseresdata(
2314: $ENV{'course.'.$ENV{'request.course.id'}.'.num'},
2315: $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
2316: ($seclevelr,$seclevelm,$seclevel,
2317: $courselevelr,$courselevelm,$courselevel));
2318: if ($coursereply) { return $coursereply; }
2319:
1.60 www 2320: # ------------------------------------------------------ third, check map parms
1.65 www 2321: my %parmhash=();
2322: my $thisparm='';
2323: if (tie(%parmhash,'GDBM_File',
2324: $ENV{'request.course.fn'}.'_parms.db',&GDBM_READER,0640)) {
2325: $thisparm=$parmhash{$symbparm};
2326: untie(%parmhash);
1.60 www 2327: }
1.65 www 2328: if ($thisparm) { return $thisparm; }
1.60 www 2329: }
2330:
2331: # --------------------------------------------- last, look in resource metadata
1.71 www 2332:
1.78 www 2333: $spacequalifierrest=~s/\./\_/;
1.71 www 2334: my $metadata=&metadata($ENV{'request.filename'},$spacequalifierrest);
2335: if ($metadata) { return $metadata; }
1.78 www 2336: $metadata=&metadata($ENV{'request.filename'},
2337: 'parameter_'.$spacequalifierrest);
2338: if ($metadata) { return $metadata; }
1.142 www 2339:
1.145 www 2340: # ------------------------------------------------------------------ Cascade up
2341:
2342: unless ($space eq '0') {
1.165 www 2343: my ($part,$id)=split(/\_/,$space);
1.145 www 2344: if ($id) {
1.147 www 2345: my $partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
2346: $symbparm);
1.145 www 2347: if ($partgeneral) { return $partgeneral; }
2348: } else {
1.147 www 2349: my $resourcegeneral=&EXT('resource.0.'.$qualifierrest,
2350: $symbparm);
1.145 www 2351: if ($resourcegeneral) { return $resourcegeneral; }
2352: }
2353: }
1.71 www 2354:
1.48 www 2355: # ---------------------------------------------------- Any other user namespace
2356: } elsif ($realm eq 'environment') {
2357: # ----------------------------------------------------------------- environment
1.127 ng 2358: return $ENV{'environment.'.$spacequalifierrest};
1.28 www 2359: } elsif ($realm eq 'system') {
1.48 www 2360: # ----------------------------------------------------------------- system.time
2361: if ($space eq 'time') {
2362: return time;
2363: }
1.28 www 2364: }
1.48 www 2365: return '';
1.61 www 2366: }
2367:
1.71 www 2368: # ---------------------------------------------------------------- Get metadata
2369:
2370: sub metadata {
1.176 www 2371: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
1.78 www 2372:
1.71 www 2373: $uri=&declutter($uri);
1.73 www 2374: my $filename=$uri;
2375: $uri=~s/\.meta$//;
1.172 www 2376: #
2377: # Is the metadata already cached?
1.177 www 2378: # Look at timestamp of caching
1.172 www 2379: # Everything is cached by the main uri, libraries are never directly cached
2380: #
1.174 www 2381: unless (abs($metacache{$uri.':cachedtimestamp'}-time)<600) {
1.172 www 2382: #
2383: # Is this a recursive call for a library?
2384: #
1.171 www 2385: if ($liburi) {
2386: $liburi=&declutter($liburi);
2387: $filename=$liburi;
2388: }
1.140 www 2389: my %metathesekeys=();
1.73 www 2390: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
2391: my $metastring=&getfile($perlvar{'lonDocRoot'}.'/res/'.$filename);
1.208 ! albertel 2392: my $parser=HTML::LCParser->new(\$metastring);
1.71 www 2393: my $token;
1.140 www 2394: undef %metathesekeys;
1.71 www 2395: while ($token=$parser->get_token) {
2396: if ($token->[0] eq 'S') {
1.135 www 2397: if (defined($token->[2]->{'package'})) {
1.172 www 2398: #
2399: # This is a package - get package info
2400: #
1.136 www 2401: my $package=$token->[2]->{'package'};
2402: my $keyroot='';
1.172 www 2403: if ($prefix) {
2404: $keyroot.='_'.$prefix;
2405: } else {
2406: if (defined($token->[2]->{'part'})) {
2407: $keyroot.='_'.$token->[2]->{'part'};
2408: }
1.136 www 2409: }
2410: if (defined($token->[2]->{'id'})) {
1.165 www 2411: $keyroot.='_'.$token->[2]->{'id'};
1.136 www 2412: }
2413: if ($metacache{$uri.':packages'}) {
2414: $metacache{$uri.':packages'}.=','.$package.$keyroot;
2415: } else {
2416: $metacache{$uri.':packages'}=$package.$keyroot;
2417: }
1.191 harris41 2418: foreach (keys %packagetab) {
1.137 www 2419: if ($_=~/^$package\&/) {
2420: my ($pack,$name,$subp)=split(/\&/,$_);
1.139 www 2421: my $value=$packagetab{$_};
1.144 www 2422: my $part=$keyroot;
2423: $part=~s/^\_//;
1.139 www 2424: if ($subp eq 'display') {
2425: $value.=' [Part: '.$part.']';
2426: }
2427: my $unikey='parameter'.$keyroot.'_'.$name;
1.140 www 2428: $metathesekeys{$unikey}=1;
1.144 www 2429: $metacache{$uri.':'.$unikey.'.part'}=$part;
1.141 www 2430: unless
2431: (defined($metacache{$uri.':'.$unikey.'.'.$subp})) {
2432: $metacache{$uri.':'.$unikey.'.'.$subp}=$value;
2433: }
1.137 www 2434: }
1.191 harris41 2435: }
1.135 www 2436: } else {
1.172 www 2437: #
2438: # This is not a package - some other kind of start tag
2439: #
1.175 www 2440: my $entry=$token->[1];
1.176 www 2441: my $unikey;
2442: if ($entry eq 'import') {
2443: $unikey='';
2444: } else {
2445: $unikey=$entry;
2446: }
1.172 www 2447: if ($prefix) {
1.176 www 2448: $unikey.=$prefix;
1.172 www 2449: } else {
2450: if (defined($token->[2]->{'part'})) {
2451: $unikey.='_'.$token->[2]->{'part'};
2452: }
1.136 www 2453: }
2454: if (defined($token->[2]->{'id'})) {
1.165 www 2455: $unikey.='_'.$token->[2]->{'id'};
1.71 www 2456: }
1.175 www 2457:
2458: if ($entry eq 'import') {
2459: #
2460: # Importing a library here
1.176 www 2461: #
2462: if (defined($depthcount)) { $depthcount++; } else
2463: { $depthcount=0; }
2464: if ($depthcount<20) {
1.191 harris41 2465: foreach (split(/\,/,&metadata($uri,'keys',
2466: $parser->get_text('/import'),$unikey,
2467: $depthcount))) {
1.177 www 2468: $metathesekeys{$_}=1;
1.191 harris41 2469: }
1.176 www 2470: }
1.175 www 2471: } else {
2472:
1.72 www 2473: if (defined($token->[2]->{'name'})) {
1.71 www 2474: $unikey.='_'.$token->[2]->{'name'};
2475: }
1.140 www 2476: $metathesekeys{$unikey}=1;
1.191 harris41 2477: foreach (@{$token->[3]}) {
1.71 www 2478: $metacache{$uri.':'.$unikey.'.'.$_}=$token->[2]->{$_};
1.191 harris41 2479: }
1.78 www 2480: unless (
1.208 ! albertel 2481: $metacache{$uri.':'.$unikey}=&HTML::Entities::decode($parser->get_text('/'.$entry))
1.78 www 2482: ) { $metacache{$uri.':'.$unikey}=
2483: $metacache{$uri.':'.$unikey.'.default'};
2484: }
1.172 www 2485: # end of not-a-package not-a-library import
1.175 www 2486: }
1.172 www 2487: # end of not-a-package start tag
2488: }
2489: # the next is the end of "start tag"
1.140 www 2490: }
1.71 www 2491: }
1.140 www 2492: $metacache{$uri.':keys'}=join(',',keys %metathesekeys);
1.174 www 2493: $metacache{$uri.':cachedtimestamp'}=time;
1.177 www 2494: # this is the end of "was not already recently cached
1.71 www 2495: }
2496: return $metacache{$uri.':'.$what};
2497: }
2498:
1.31 www 2499: # ------------------------------------------------- Update symbolic store links
2500:
2501: sub symblist {
2502: my ($mapname,%newhash)=@_;
2503: $mapname=declutter($mapname);
2504: my %hash;
2505: if (($ENV{'request.course.fn'}) && (%newhash)) {
2506: if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
2507: &GDBM_WRCREAT,0640)) {
1.191 harris41 2508: foreach (keys %newhash) {
1.31 www 2509: $hash{declutter($_)}=$mapname.'___'.$newhash{$_};
1.191 harris41 2510: }
1.31 www 2511: if (untie(%hash)) {
2512: return 'ok';
2513: }
2514: }
2515: }
2516: return 'error';
2517: }
2518:
2519: # ------------------------------------------------------ Return symb list entry
2520:
2521: sub symbread {
1.44 www 2522: my $thisfn=shift;
2523: unless ($thisfn) {
1.179 www 2524: if ($ENV{'request.symb'}) { return $ENV{'request.symb'}; }
1.44 www 2525: $thisfn=$ENV{'request.filename'};
2526: }
2527: $thisfn=declutter($thisfn);
1.31 www 2528: my %hash;
1.37 www 2529: my %bighash;
2530: my $syval='';
1.45 www 2531: if (($ENV{'request.course.fn'}) && ($thisfn)) {
1.31 www 2532: if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db',
2533: &GDBM_READER,0640)) {
2534: $syval=$hash{$thisfn};
1.37 www 2535: untie(%hash);
2536: }
2537: # ---------------------------------------------------------- There was an entry
2538: if ($syval) {
2539: unless ($syval=~/\_\d+$/) {
2540: unless ($ENV{'form.request.prefix'}=~/\.(\d+)\_$/) {
1.44 www 2541: &appenv('request.ambiguous' => $thisfn);
1.37 www 2542: return '';
2543: }
2544: $syval.=$1;
2545: }
2546: } else {
2547: # ------------------------------------------------------- Was not in symb table
2548: if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db',
2549: &GDBM_READER,0640)) {
2550: # ---------------------------------------------- Get ID(s) for current resource
2551: my $ids=$bighash{'ids_/res/'.$thisfn};
1.65 www 2552: unless ($ids) {
2553: $ids=$bighash{'ids_/'.$thisfn};
2554: }
1.37 www 2555: if ($ids) {
2556: # ------------------------------------------------------------------- Has ID(s)
2557: my @possibilities=split(/\,/,$ids);
1.39 www 2558: if ($#possibilities==0) {
2559: # ----------------------------------------------- There is only one possibility
1.37 www 2560: my ($mapid,$resid)=split(/\./,$ids);
2561: $syval=declutter($bighash{'map_id_'.$mapid}).'___'.$resid;
2562: } else {
1.39 www 2563: # ------------------------------------------ There is more than one possibility
2564: my $realpossible=0;
1.191 harris41 2565: foreach (@possibilities) {
1.39 www 2566: my $file=$bighash{'src_'.$_};
2567: if (&allowed('bre',$file)) {
2568: my ($mapid,$resid)=split(/\./,$_);
2569: if ($bighash{'map_type_'.$mapid} ne 'page') {
2570: $realpossible++;
2571: $syval=declutter($bighash{'map_id_'.$mapid}).
2572: '___'.$resid;
2573: }
2574: }
1.191 harris41 2575: }
1.39 www 2576: if ($realpossible!=1) { $syval=''; }
1.37 www 2577: }
2578: }
2579: untie(%bighash)
2580: }
1.31 www 2581: }
1.62 www 2582: if ($syval) {
2583: return $syval.'___'.$thisfn;
2584: }
1.31 www 2585: }
1.44 www 2586: &appenv('request.ambiguous' => $thisfn);
1.31 www 2587: return '';
2588: }
2589:
2590: # ---------------------------------------------------------- Return random seed
2591:
1.32 www 2592: sub numval {
2593: my $txt=shift;
2594: $txt=~tr/A-J/0-9/;
2595: $txt=~tr/a-j/0-9/;
2596: $txt=~tr/K-T/0-9/;
2597: $txt=~tr/k-t/0-9/;
2598: $txt=~tr/U-Z/0-5/;
2599: $txt=~tr/u-z/0-5/;
2600: $txt=~s/\D//g;
2601: return int($txt);
2602: }
2603:
1.31 www 2604: sub rndseed {
1.155 albertel 2605: my ($symb,$courseid,$domain,$username)=@_;
2606: if (!$symb) {
2607: unless ($symb=&symbread()) { return time; }
2608: }
2609: if (!$courseid) { $courseid=$ENV{'request.course.id'};}
2610: if (!$domain) {$domain=$ENV{'user.domain'};}
2611: if (!$username) {$username=$ENV{'user.name'};}
2612: {
1.98 albertel 2613: use integer;
2614: my $symbchck=unpack("%32C*",$symb) << 27;
1.100 albertel 2615: my $symbseed=numval($symb) << 22;
1.155 albertel 2616: my $namechck=unpack("%32C*",$username) << 17;
2617: my $nameseed=numval($username) << 12;
2618: my $domainseed=unpack("%32C*",$domain) << 7;
2619: my $courseseed=unpack("%32C*",$courseid);
1.98 albertel 2620: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
1.99 albertel 2621: #uncommenting these lines can break things!
2622: #&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
2623: #&Apache::lonxml::debug("rndseed :$num:$symb");
1.98 albertel 2624: return $num;
2625: }
1.36 albertel 2626: }
2627:
1.76 www 2628: sub ireceipt {
2629: my ($funame,$fudom,$fucourseid,$fusymb)=@_;
2630: my $cuname=unpack("%32C*",$funame);
2631: my $cudom=unpack("%32C*",$fudom);
2632: my $cucourseid=unpack("%32C*",$fucourseid);
2633: my $cusymb=unpack("%32C*",$fusymb);
1.77 www 2634: my $cunique=unpack("%32C*",$perlvar{'lonReceipt'});
1.76 www 2635: return unpack("%32C*",$perlvar{'lonHostID'}).'-'.
2636: ($cunique%$cuname+
2637: $cunique%$cudom+
2638: $cusymb%$cuname+
2639: $cusymb%$cudom+
2640: $cucourseid%$cuname+
2641: $cucourseid%$cudom);
2642: }
2643:
2644: sub receipt {
2645: return &ireceipt($ENV{'user.name'},$ENV{'user.domain'},
2646: $ENV{'request.course.id'},&symbread());
2647: }
2648:
1.36 albertel 2649: # ------------------------------------------------------------ Serves up a file
2650: # returns either the contents of the file or a -1
2651: sub getfile {
2652: my $file=shift;
1.37 www 2653: &repcopy($file);
1.36 albertel 2654: if (! -e $file ) { return -1; };
2655: my $fh=Apache::File->new($file);
2656: my $a='';
2657: while (<$fh>) { $a .=$_; }
2658: return $a
2659: }
2660:
2661: sub filelocation {
2662: my ($dir,$file) = @_;
2663: my $location;
2664: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
1.59 albertel 2665: if ($file=~m:^/~:) { # is a contruction space reference
2666: $location = $file;
2667: $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
1.36 albertel 2668: } else {
1.59 albertel 2669: $file=~s/^$perlvar{'lonDocRoot'}//;
2670: $file=~s:^/*res::;
2671: if ( !( $file =~ m:^/:) ) {
2672: $location = $dir. '/'.$file;
2673: } else {
2674: $location = '/home/httpd/html/res'.$file;
2675: }
1.36 albertel 2676: }
2677: $location=~s://+:/:g; # remove duplicate /
1.46 www 2678: while ($location=~m:/\.\./:) {$location=~ s:/[^/]+/\.\./:/:g;} #remove dir/..
2679: return $location;
2680: }
1.36 albertel 2681:
1.46 www 2682: sub hreflocation {
2683: my ($dir,$file)=@_;
1.191 harris41 2684: unless (($file=~/^http:\/\//i) || ($file=~/^\//)) {
1.46 www 2685: my $finalpath=filelocation($dir,$file);
2686: $finalpath=~s/^\/home\/httpd\/html//;
2687: return $finalpath;
2688: } else {
2689: return $file;
2690: }
1.31 www 2691: }
2692:
2693: # ------------------------------------------------------------- Declutters URLs
2694:
2695: sub declutter {
2696: my $thisfn=shift;
2697: $thisfn=~s/^$perlvar{'lonDocRoot'}//;
2698: $thisfn=~s/^\///;
2699: $thisfn=~s/^res\///;
2700: return $thisfn;
1.12 www 2701: }
2702:
2703: # -------------------------------------------------------- Escape Special Chars
2704:
2705: sub escape {
2706: my $str=shift;
2707: $str =~ s/(\W)/"%".unpack('H2',$1)/eg;
2708: return $str;
2709: }
2710:
2711: # ----------------------------------------------------- Un-Escape Special Chars
2712:
2713: sub unescape {
2714: my $str=shift;
2715: $str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2716: return $str;
2717: }
1.11 www 2718:
1.1 albertel 2719: # ================================================================ Main Program
2720:
1.184 www 2721: sub goodbye {
1.204 albertel 2722: &logthis("Starting Shut down");
1.184 www 2723: &flushcourselogs();
2724: &logthis("Shutting down");
2725: }
2726:
1.179 www 2727: BEGIN {
1.1 albertel 2728: # ------------------------------------------------------------ Read access.conf
1.195 www 2729: unless ($readit) {
1.1 albertel 2730: {
2731: my $config=Apache::File->new("/etc/httpd/conf/access.conf");
2732:
2733: while (my $configline=<$config>) {
2734: if ($configline =~ /PerlSetVar/) {
2735: my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);
1.8 www 2736: chomp($varvalue);
1.1 albertel 2737: $perlvar{$varname}=$varvalue;
2738: }
2739: }
2740: }
2741:
2742: # ------------------------------------------------------------- Read hosts file
2743: {
2744: my $config=Apache::File->new("$perlvar{'lonTabDir'}/hosts.tab");
2745:
2746: while (my $configline=<$config>) {
1.154 www 2747: chomp($configline);
1.1 albertel 2748: my ($id,$domain,$role,$name,$ip)=split(/:/,$configline);
2749: $hostname{$id}=$name;
2750: $hostdom{$id}=$domain;
1.150 www 2751: $hostip{$id}=$ip;
1.1 albertel 2752: if ($role eq 'library') { $libserv{$id}=$name; }
2753: }
2754: }
2755:
2756: # ------------------------------------------------------ Read spare server file
2757: {
2758: my $config=Apache::File->new("$perlvar{'lonTabDir'}/spare.tab");
2759:
2760: while (my $configline=<$config>) {
2761: chomp($configline);
2762: if (($configline) && ($configline ne $perlvar{'lonHostID'})) {
2763: $spareid{$configline}=1;
2764: }
2765: }
2766: }
1.11 www 2767: # ------------------------------------------------------------ Read permissions
2768: {
2769: my $config=Apache::File->new("$perlvar{'lonTabDir'}/roles.tab");
2770:
2771: while (my $configline=<$config>) {
2772: chomp($configline);
1.160 www 2773: if ($configline) {
1.11 www 2774: my ($role,$perm)=split(/ /,$configline);
2775: if ($perm ne '') { $pr{$role}=$perm; }
1.160 www 2776: }
1.11 www 2777: }
2778: }
2779:
2780: # -------------------------------------------- Read plain texts for permissions
2781: {
2782: my $config=Apache::File->new("$perlvar{'lonTabDir'}/rolesplain.tab");
2783:
2784: while (my $configline=<$config>) {
2785: chomp($configline);
1.160 www 2786: if ($configline) {
1.11 www 2787: my ($short,$plain)=split(/:/,$configline);
2788: if ($plain ne '') { $prp{$short}=$plain; }
1.160 www 2789: }
1.135 www 2790: }
2791: }
2792:
2793: # ---------------------------------------------------------- Read package table
2794: {
2795: my $config=Apache::File->new("$perlvar{'lonTabDir'}/packages.tab");
2796:
2797: while (my $configline=<$config>) {
2798: chomp($configline);
2799: my ($short,$plain)=split(/:/,$configline);
1.143 www 2800: my ($pack,$name)=split(/\&/,$short);
2801: if ($plain ne '') {
2802: $packagetab{$pack.'&'.$name.'&name'}=$name;
2803: $packagetab{$short}=$plain;
1.25 www 2804: }
1.11 www 2805: }
2806: }
2807:
1.71 www 2808: %metacache=();
1.185 www 2809:
2810: $processmarker=$$.'_'.time.'_'.$perlvar{'lonHostID'};
1.186 www 2811: $dumpcount=0;
1.22 www 2812:
1.163 harris41 2813: &logtouch();
1.12 www 2814: &logthis('<font color=yellow>INFO: Read configuration</font>');
1.195 www 2815: $readit=1;
2816: }
1.1 albertel 2817: }
1.179 www 2818:
1.1 albertel 2819: 1;
1.191 harris41 2820: __END__
2821:
2822: =head1 NAME
2823:
2824: Apache::lonnet - TCP networking package
2825:
2826: =head1 SYNOPSIS
2827:
2828: Invoked by other LON-CAPA modules.
2829:
2830: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
2831:
2832: =head1 INTRODUCTION
2833:
2834: This module provides subroutines which interact with the
2835: lonc/lond (TCP) network layer of LON-CAPA.
2836:
2837: This is part of the LearningOnline Network with CAPA project
2838: described at http://www.lon-capa.org.
2839:
2840: =head1 HANDLER SUBROUTINE
2841:
2842: There is no handler routine for this module.
2843:
2844: =head1 OTHER SUBROUTINES
2845:
2846: =over 4
2847:
2848: =item *
2849:
2850: logtouch() : make sure the logfile, lonnet.log, exists
2851:
2852: =item *
2853:
2854: logthis() : append message to lonnet.log
2855:
2856: =item *
2857:
2858: logperm() : append a permanent message to lonnet.perm.log
2859:
2860: =item *
2861:
2862: subreply() : non-critical communication, called by &reply
2863:
2864: =item *
2865:
2866: reply() : makes two attempts to pass message; logs refusals and rejections
2867:
2868: =item *
2869:
2870: reconlonc() : tries to reconnect lonc client processes.
2871:
2872: =item *
2873:
2874: critical() : passes a critical message to another server; if cannot get
2875: through then place message in connection buffer
2876:
2877: =item *
2878:
2879: appenv(%hash) : read in current user environment, append new environment
2880: values to make new user environment
2881:
2882: =item *
2883:
2884: delenv($varname) : read in current user environment, remove all values
2885: beginning with $varname, write new user environment (note: flock is used
2886: to prevent conflicting shared read/writes with file)
2887:
2888: =item *
2889:
2890: spareserver() : find server with least workload from spare.tab
2891:
2892: =item *
2893:
2894: queryauthenticate($uname,$udom) : try to determine user's current
2895: authentication scheme
2896:
2897: =item *
2898:
2899: authenticate($uname,$upass,$udom) : try to authenticate user from domain's lib
2900: servers (first use the current one)
2901:
2902: =item *
2903:
2904: homeserver($uname,$udom) : find the homebase for a user from domain's lib
2905: servers
2906:
2907: =item *
2908:
2909: idget($udom,@ids) : find the usernames behind a list of IDs (returns hash:
2910: id=>name,id=>name)
2911:
2912: =item *
2913:
2914: idrget($udom,@unames) : find the IDs behind a list of usernames (returns hash:
2915: name=>id,name=>id)
2916:
2917: =item *
2918:
2919: idput($udom,%ids) : store away a list of names and associated IDs
2920:
2921: =item *
2922:
2923: usection($domain,$user,$courseid) : output of section name/number or '' for
2924: "not in course" and '-1' for "no section"
2925:
2926: =item *
2927:
2928: userenvironment($domain,$user,$what) : puts out any environment parameter
2929: for a user
2930:
2931: =item *
2932:
2933: subscribe($fname) : subscribe to a resource, return URL if possible
2934:
2935: =item *
2936:
2937: repcopy($filename) : replicate file
2938:
2939: =item *
2940:
2941: ssi($url,%hash) : server side include, does a complete request cycle on url to
2942: localhost, posts hash
2943:
2944: =item *
2945:
2946: log($domain,$name,$home,$message) : write to permanent log for user; use
2947: critical subroutine
2948:
2949: =item *
2950:
2951: flushcourselogs() : flush (save) buffer logs and access logs
2952:
2953: =item *
2954:
2955: courselog($what) : save message for course in hash
2956:
2957: =item *
2958:
2959: courseacclog($what) : save message for course using &courselog(). Perform
2960: special processing for specific resource types (problems, exams, quizzes, etc).
2961:
2962: =item *
2963:
2964: countacc($url) : count the number of accesses to a given URL
2965:
2966: =item *
2967:
2968: sub checkout($symb,$tuname,$tudom,$tcrsid) : check out an item
2969:
2970: =item *
2971:
2972: sub checkin($token) : check in an item
2973:
2974: =item *
2975:
2976: sub expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
2977:
2978: =item *
2979:
2980: devalidate($symb) : devalidate spreadsheets
2981:
2982: =item *
2983:
2984: hash2str(%hash) : convert a hash into a string complete with escaping and '='
1.204 albertel 2985: and '&' separators, supports elements that are arrayrefs and hashrefs
2986:
2987: =item *
2988:
2989: hashref2str($hashref) : convert a hashref into a string complete with
2990: escaping and '=' and '&' separators, supports elements that are
2991: arrayrefs and hashrefs
2992:
2993: =item *
2994:
2995: arrayref2str($arrayref) : convert an arrayref into a string complete
2996: with escaping and '&' separators, supports elements that are arrayrefs
2997: and hashrefs
2998:
2999: =item *
3000:
3001: str2hash($string) : convert string to hash using unescaping and
3002: splitting on '=' and '&', supports elements that are arrayrefs and
3003: hashrefs
1.191 harris41 3004:
3005: =item *
3006:
1.204 albertel 3007: str2array($string) : convert string to hash using unescaping and
3008: splitting on '&', supports elements that are arrayrefs and hashrefs
1.191 harris41 3009:
3010: =item *
3011:
3012: tmpreset($symb,$namespace,$domain,$stuname) : temporary storage
3013:
3014: =item *
3015:
3016: tmprestore($symb,$namespace,$domain,$stuname) : temporary restore
3017:
3018: =item *
3019:
3020: store($storehash,$symb,$namespace,$domain,$stuname) : stores hash permanently
3021: for this url; hashref needs to be given and should be a \%hashname; the
3022: remaining args aren't required and if they aren't passed or are '' they will
3023: be derived from the ENV
3024:
3025: =item *
3026:
3027: cstore($storehash,$symb,$namespace,$domain,$stuname) : same as store but
3028: uses critical subroutine
3029:
3030: =item *
3031:
3032: restore($symb,$namespace,$domain,$stuname) : returns hash for this symb;
3033: all args are optional
3034:
3035: =item *
3036:
3037: coursedescription($courseid) : course description
3038:
3039: =item *
3040:
3041: rolesinit($domain,$username,$authhost) : get user privileges
3042:
3043: =item *
3044:
3045: get($namespace,$storearr,$udomain,$uname) : returns hash with keys from array
3046: reference filled in from namesp ($udomain and $uname are optional)
3047:
3048: =item *
3049:
3050: del($namespace,$storearr,$udomain,$uname) : deletes keys out of array from
3051: namesp ($udomain and $uname are optional)
3052:
3053: =item *
3054:
1.193 www 3055: dump($namespace,$udomain,$uname,$regexp) :
3056: dumps the complete (or key matching regexp) namespace into a hash
3057: ($udomain, $uname and $regexp are optional)
1.191 harris41 3058:
3059: =item *
3060:
3061: put($namespace,$storehash,$udomain,$uname) : stores hash in namesp
3062: ($udomain and $uname are optional)
3063:
3064: =item *
3065:
3066: cput($namespace,$storehash,$udomain,$uname) : critical put
3067: ($udomain and $uname are optional)
3068:
3069: =item *
3070:
3071: eget($namespace,$storearr,$udomain,$uname) : returns hash with keys from array
3072: reference filled in from namesp (encrypts the return communication)
3073: ($udomain and $uname are optional)
3074:
3075: =item *
3076:
3077: allowed($priv,$uri) : check for a user privilege; returns codes for allowed
3078: actions
3079: F: full access
3080: U,I,K: authentication modes (cxx only)
3081: '': forbidden
3082: 1: user needs to choose course
3083: 2: browse allowed
3084:
3085: =item *
3086:
3087: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
3088: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
3089: and course level
3090:
3091: =item *
3092:
3093: metadata_query($query,$custom,$customshow) : make a metadata query against the
3094: network of library servers; returns file handle of where SQL and regex results
3095: will be stored for query
3096:
3097: =item *
3098:
3099: plaintext($short) : return value in %prp hash (rolesplain.tab); plain text
3100: explanation of a user role term
3101:
3102: =item *
3103:
3104: assignrole($udom,$uname,$url,$role,$end,$start) : assign role; give a role to a
3105: user for the level given by URL. Optional start and end dates (leave empty
3106: string or zero for "no date")
3107:
3108: =item *
3109:
3110: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
3111:
3112: =item *
3113:
3114: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene) :
3115: modify user
3116:
3117: =item *
3118:
3119: modifystudent($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
3120: $end,$start) : modify student
3121:
3122: =item *
3123:
3124: writecoursepref($courseid,%prefs) : write preferences for a course
3125:
3126: =item *
3127:
3128: createcourse($udom,$description,$url) : make/modify course
3129:
3130: =item *
3131:
3132: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
3133: custom role; give a custom role to a user for the level given by URL. Specify
3134: name and domain of role author, and role name
3135:
3136: =item *
3137:
3138: revokerole($udom,$uname,$url,$role) : revoke a role for url
3139:
3140: =item *
3141:
3142: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
3143:
3144: =item *
3145:
3146: dirlist($uri) : return directory list based on URI
3147:
3148: =item *
3149:
3150: directcondval($number) : get current value of a condition; reads from a state
3151: string
3152:
3153: =item *
3154:
3155: condval($condidx) : value of condition index based on state
3156:
3157: =item *
3158:
3159: EXT($varname,$symbparm) : value of a variable
3160:
3161: =item *
3162:
3163: metadata($uri,$what,$liburi,$prefix,$depthcount) : get metadata; returns the
3164: metadata entry for a file; entry='keys', returns a comma separated list of keys
3165:
3166: =item *
3167:
3168: symblist($mapname,%newhash) : update symbolic storage links
3169:
3170: =item *
3171:
3172: symbread($filename) : return symbolic list entry (filename argument optional);
3173: returns the data handle
3174:
3175: =item *
3176:
3177: numval($salt) : return random seed value (addend for rndseed)
3178:
3179: =item *
3180:
3181: rndseed($symb,$courseid,$domain,$username) : create a random sum; returns
3182: a random seed, all arguments are optional, if they aren't sent it uses the
3183: environment to derive them. Note: if symb isn't sent and it can't get one
3184: from &symbread it will use the current time as its return value
3185:
3186: =item *
3187:
3188: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
3189: unfakeable, receipt
3190:
3191: =item *
3192:
3193: receipt() : API to ireceipt working off of ENV values; given out to users
3194:
3195: =item *
3196:
3197: getfile($file) : serves up a file, returns the contents of a file or -1;
3198: replicates and subscribes to the file
3199:
3200: =item *
3201:
3202: filelocation($dir,$file) : returns file system location of a file based on URI;
3203: meant to be "fairly clean" absolute reference
3204:
3205: =item *
3206:
3207: hreflocation($dir,$file) : returns file system location or a URL; same as
3208: filelocation except for hrefs
3209:
3210: =item *
3211:
3212: declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
3213:
3214: =item *
3215:
3216: escape() : unpack non-word characters into CGI-compatible hex codes
3217:
3218: =item *
3219:
3220: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
3221:
3222: =item *
3223:
3224: goodbye() : flush course logs and log shutting down; it is called in srm.conf
3225: as a PerlChildExitHandler
3226:
3227: =back
3228:
3229: =cut
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