Annotation of loncom/auth/loncacc.pm, revision 1.21
1.1 albertel 1: # The LearningOnline Network
2: # Cookie Based Access Handler for Construction Area
3: # (lonacc: 5/21/99,5/22,5/29,5/31 Gerd Kortemeyer)
1.20 www 4: #
1.21 ! albertel 5: # $Id: loncacc.pm,v 1.20 2002/01/04 15:10:54 www Exp $
1.20 www 6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
13: # the Free Software Foundation; either version 2 of the License, or
14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27: # http://www.lon-capa.org/
28: #
29: # YEAR=2000
1.4 www 30: # 6/15,16/11,22/11,
1.20 www 31: # YEAR=2001
1.15 www 32: # 01/06,01/11,6/1,9/25,9/28,11/22,12/25,12/26,
1.16 www 33: # 01/06/01,05/04,05/05,05/09 Gerd Kortemeyer
1.20 www 34: # 12/21 Scott Harrison
35: # YEAR=2002
36: # 1/4 Gerd Kortemeyer
37: ###
1.1 albertel 38:
39: package Apache::loncacc;
40:
41: use strict;
1.8 www 42: use Apache::Constants qw(:common :http :methods);
1.7 www 43: use Apache::File;
1.1 albertel 44: use CGI::Cookie();
1.14 www 45: use Fcntl qw(:flock);
1.1 albertel 46:
1.15 www 47: sub constructaccess {
48: my ($url,$ownerdomain)=@_;
1.16 www 49: my ($ownername)=($url=~/\/(?:\~|priv\/|home\/)(\w+)/);
1.15 www 50: unless (($ownername) && ($ownerdomain)) { return ''; }
51:
52: if (($ownername eq $ENV{'user.name'}) &&
53: ($ownerdomain eq $ENV{'user.domain'})) {
54: return ($ownername,$ownerdomain);
55: }
56:
57: my $capriv='user.priv.ca./'.
58: $ownerdomain.'/'.$ownername.'./'.
59: $ownerdomain.'/'.$ownername;
1.20 www 60: foreach (keys %ENV) {
1.15 www 61: if ($_ eq $capriv) {
62: return ($ownername,$ownerdomain);
63: }
1.20 www 64: }
1.15 www 65:
66: return '';
67: }
68:
1.1 albertel 69: sub handler {
70: my $r = shift;
71: my $requrl=$r->uri;
72: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
73: my $lonid=$cookies{'lonID'};
74: my $cookie;
75: if ($lonid) {
76: my $handle=$lonid->value;
77: $handle=~s/\W//g;
78: my $lonidsdir=$r->dir_config('lonIDsDir');
79: if ((-e "$lonidsdir/$handle.id") && ($handle ne '')) {
1.2 www 80: my @profile;
81: {
82: my $idf=Apache::File->new("$lonidsdir/$handle.id");
1.14 www 83: flock($idf,LOCK_SH);
1.2 www 84: @profile=<$idf>;
1.14 www 85: $idf->close();
1.2 www 86: }
87: my $envi;
88: for ($envi=0;$envi<=$#profile;$envi++) {
89: chomp($profile[$envi]);
90: my ($envname,$envvalue)=split(/=/,$profile[$envi]);
1.9 www 91: $ENV{$envname} = $envvalue;
1.2 www 92: }
1.9 www 93: $ENV{'user.environment'} = "$lonidsdir/$handle.id";
94: $ENV{'request.state'} = "construct";
95: $ENV{'request.filename'} = $r->filename;
1.15 www 96:
97: unless (&constructaccess($requrl,$r->dir_config('lonDefDomain'))) {
98: $r->log_reason("Unauthorized $requrl", $r->filename);
99: return HTTP_NOT_ACCEPTABLE;
100: }
1.9 www 101:
102: # -------------------------------------------------------- Load POST parameters
103:
104:
1.12 www 105: my $buffer;
1.8 www 106:
1.12 www 107: $r->read($buffer,$r->header_in('Content-length'));
108:
109: unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) {
1.5 www 110: my @pairs=split(/&/,$buffer);
1.9 www 111: my $pair;
1.5 www 112: foreach $pair (@pairs) {
1.9 www 113: my ($name,$value) = split(/=/,$pair);
1.6 www 114: $value =~ tr/+/ /;
115: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1.10 www 116: $name =~ tr/+/ /;
117: $name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1.21 ! albertel 118: &Apache::loncommon::add_to_env("form.$name",$value);
1.5 www 119: }
1.12 www 120: } else {
121: my $contentsep=$1;
122: my @lines = split (/\n/,$buffer);
123: my $name='';
124: my $value='';
125: my $fname='';
126: my $fmime='';
127: my $i;
128: for ($i=0;$i<=$#lines;$i++) {
129: if ($lines[$i]=~/^$contentsep/) {
130: if ($name) {
131: chomp($value);
132: if ($fname) {
133: $ENV{"form.$name.filename"}=$fname;
134: $ENV{"form.$name.mimetype"}=$fmime;
1.13 www 135: } else {
136: $value=~s/\s+$//s;
1.12 www 137: }
1.21 ! albertel 138: &Apache::loncommon::add_to_env("form.$name",$value);
1.12 www 139: }
140: if ($i<$#lines) {
141: $i++;
142: $lines[$i]=~
143: /Content\-Disposition\:\s*form\-data\;\s*name\=\"([^\"]+)\"/i;
144: $name=$1;
145: $value='';
146: if ($lines[$i]=~/filename\=\"([^\"]+)\"/i) {
147: $fname=$1;
148: if
149: ($lines[$i+1]=~/Content\-Type\:\s*([\w\-\/]+)/i) {
150: $fmime=$1;
151: $i++;
152: } else {
153: $fmime='';
154: }
155: } else {
156: $fname='';
157: $fmime='';
158: }
159: $i++;
160: }
161: } else {
162: $value.=$lines[$i]."\n";
163: }
164: }
165: }
1.20 www 166: $ENV{'request.method'}=$ENV{'REQUEST_METHOD'};
1.8 www 167: $r->method_number(M_GET);
168: $r->method('GET');
169: $r->headers_in->unset('Content-length');
170:
1.1 albertel 171: return OK;
172: } else {
173: $r->log_reason("Cookie $handle not valid", $r->filename)
174: };
175: }
1.6 www 176:
177: # ----------------------------------------------- Store where they wanted to go
178:
179: $ENV{'request.firsturl'}=$requrl;
1.1 albertel 180: return FORBIDDEN;
181: }
182:
183: 1;
184: __END__
185:
1.20 www 186: =head1 NAME
187:
188: Apache::lonacc - Cookie Based Access Handler for Construction Area
189:
190: =head1 SYNOPSIS
191:
192: Invoked (for various locations) by /etc/httpd/conf/srm.conf:
193:
194: PerlAccessHandler Apache::loncacc
195:
196: =head1 INTRODUCTION
197:
198: This module enables cookie based authentication for construction area
199: and is used to control access for three (essentially equivalent) URIs.
200:
201: <LocationMatch "^/priv.*">
202: <LocationMatch "^/\~.*">
203: <LocationMatch "^/\~.*/$">
204:
205: Whenever the client sends the cookie back to the server,
206: if the cookie is missing or invalid, the user is re-challenged
207: for login information.
208:
209: This is part of the LearningOnline Network with CAPA project
210: described at http://www.lon-capa.org.
211:
212: =head1 HANDLER SUBROUTINE
213:
214: This routine is called by Apache and mod_perl.
215:
216: =over 4
217:
218: =item *
219:
220: load POST parameters
221:
222: =item *
223:
224: store where they wanted to go (first url entered)
225:
226: =back
227:
228: =head1 OTHERSUBROUTINES
229:
230: =over 4
231:
232: =item *
233:
234: constructaccess($url,$ownerdomain) : See if the owner domain and name
235: in the URL match those in the expected environment. If so, return
236: two element list ($ownername,$ownerdomain). Else, return null string.
237:
238: =back
239:
240: =cut
1.1 albertel 241:
242:
243:
244:
245:
246:
247:
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