Annotation of loncom/auth/loncacc.pm, revision 1.29
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: #
1.29 ! www 5: # $Id: loncacc.pm,v 1.28 2003/05/13 00:52:46 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: # YEAR=2002
35: # 1/4 Gerd Kortemeyer
36: ###
1.1 albertel 37:
38: package Apache::loncacc;
39:
40: use strict;
1.26 www 41: use Apache::Constants qw(:common :http :methods REDIRECT);
1.7 www 42: use Apache::File;
1.1 albertel 43: use CGI::Cookie();
1.14 www 44: use Fcntl qw(:flock);
1.1 albertel 45:
1.15 www 46: sub constructaccess {
47: my ($url,$ownerdomain)=@_;
1.16 www 48: my ($ownername)=($url=~/\/(?:\~|priv\/|home\/)(\w+)/);
1.15 www 49: unless (($ownername) && ($ownerdomain)) { return ''; }
1.24 matthew 50: # We do not allow editing of previous versions of files.
51: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
1.15 www 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./'.
1.29 ! www 58: $ownerdomain.'/'.$ownername.'./';
1.20 www 59: foreach (keys %ENV) {
1.15 www 60: if ($_ eq $capriv) {
61: return ($ownername,$ownerdomain);
62: }
1.20 www 63: }
1.15 www 64: return '';
65: }
66:
1.1 albertel 67: sub handler {
68: my $r = shift;
69: my $requrl=$r->uri;
1.22 www 70: $ENV{'request.editurl'}=$requrl;
1.1 albertel 71: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
72: my $lonid=$cookies{'lonID'};
73: my $cookie;
74: if ($lonid) {
75: my $handle=$lonid->value;
76: $handle=~s/\W//g;
77: my $lonidsdir=$r->dir_config('lonIDsDir');
78: if ((-e "$lonidsdir/$handle.id") && ($handle ne '')) {
1.28 www 79:
80: # ------------------------------------------------------ Initialize Environment
81:
82: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
83:
84: # -------------------------------------------------------------- Resource State
85:
1.9 www 86: $ENV{'request.state'} = "construct";
87: $ENV{'request.filename'} = $r->filename;
1.15 www 88:
89: unless (&constructaccess($requrl,$r->dir_config('lonDefDomain'))) {
90: $r->log_reason("Unauthorized $requrl", $r->filename);
91: return HTTP_NOT_ACCEPTABLE;
1.26 www 92: }
93: # Construction space needs Remote to work
94: if ($ENV{'environment.remote'} eq 'off') {
95: $r->content_type('text/html');
96: $r->header_out(Location =>
97: 'http://'.$r->server->server_hostname.
98: '/adm/remote?action=launch&url='.
99: &Apache::lonnet::escape($requrl));
100: return REDIRECT;
1.15 www 101: }
1.9 www 102:
103: # -------------------------------------------------------- Load POST parameters
104:
1.28 www 105: &Apache::loncommon::get_posted_cgi($r);
1.8 www 106:
1.1 albertel 107: return OK;
108: } else {
109: $r->log_reason("Cookie $handle not valid", $r->filename)
110: };
111: }
1.6 www 112:
113: # ----------------------------------------------- Store where they wanted to go
114:
115: $ENV{'request.firsturl'}=$requrl;
1.1 albertel 116: return FORBIDDEN;
117: }
118:
119: 1;
120: __END__
121:
1.20 www 122: =head1 NAME
123:
124: Apache::lonacc - Cookie Based Access Handler for Construction Area
125:
126: =head1 SYNOPSIS
127:
1.23 albertel 128: Invoked (for various locations) by /etc/httpd/conf/loncapa_apache.conf:
1.20 www 129:
130: PerlAccessHandler Apache::loncacc
131:
132: =head1 INTRODUCTION
133:
134: This module enables cookie based authentication for construction area
135: and is used to control access for three (essentially equivalent) URIs.
136:
137: <LocationMatch "^/priv.*">
138: <LocationMatch "^/\~.*">
139: <LocationMatch "^/\~.*/$">
140:
141: Whenever the client sends the cookie back to the server,
142: if the cookie is missing or invalid, the user is re-challenged
143: for login information.
144:
145: This is part of the LearningOnline Network with CAPA project
146: described at http://www.lon-capa.org.
147:
148: =head1 HANDLER SUBROUTINE
149:
150: This routine is called by Apache and mod_perl.
151:
152: =over 4
153:
154: =item *
155:
156: load POST parameters
157:
158: =item *
159:
160: store where they wanted to go (first url entered)
161:
162: =back
163:
164: =head1 OTHERSUBROUTINES
165:
166: =over 4
167:
168: =item *
169:
170: constructaccess($url,$ownerdomain) : See if the owner domain and name
171: in the URL match those in the expected environment. If so, return
172: two element list ($ownername,$ownerdomain). Else, return null string.
173:
174: =back
175:
176: =cut
1.1 albertel 177:
178:
179:
180:
181:
182:
183:
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