Annotation of loncom/auth/loncacc.pm, revision 1.35
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: #
1.35 ! albertel 5: # $Id: loncacc.pm,v 1.34 2004/02/02 18:50:21 albertel 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);
1.30 www 45: use Apache::lonlocal;
1.33 albertel 46: use Apache::lonnet();
47:
1.1 albertel 48:
1.15 www 49: sub constructaccess {
50: my ($url,$ownerdomain)=@_;
1.32 www 51: my ($ownername)=($url=~/\/(?:\~|priv\/|home\/)(\w+)\//);
1.15 www 52: unless (($ownername) && ($ownerdomain)) { return ''; }
1.24 matthew 53: # We do not allow editing of previous versions of files.
54: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
1.33 albertel 55: my @possibledomains = &Apache::lonnet::current_machine_domains();
56: if ($ownername eq $ENV{'user.name'}) {
57: foreach my $domain (@possibledomains) {
58: if ($domain eq $ENV{'user.domain'}) {
59: return ($ownername,$domain);
60: }
61: }
1.15 www 62: }
1.33 albertel 63:
64: foreach my $domain (@possibledomains) {
65: my $capriv='user.priv.ca./'.$domain.'/'.$ownername.'./';
66: foreach (keys %ENV) {
67: if ($_ eq $capriv) {
68: return ($ownername,$domain);
69: }
70: }
1.20 www 71: }
1.15 www 72: return '';
73: }
74:
1.1 albertel 75: sub handler {
76: my $r = shift;
77: my $requrl=$r->uri;
1.22 www 78: $ENV{'request.editurl'}=$requrl;
1.1 albertel 79: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
80: my $lonid=$cookies{'lonID'};
81: my $cookie;
1.35 ! albertel 82: &Apache::lonnet::logthis("Wha? cookie");
1.1 albertel 83: if ($lonid) {
1.35 ! albertel 84: &Apache::lonnet::logthis("Valid cookie");
1.1 albertel 85: my $handle=$lonid->value;
86: $handle=~s/\W//g;
87: my $lonidsdir=$r->dir_config('lonIDsDir');
88: if ((-e "$lonidsdir/$handle.id") && ($handle ne '')) {
1.28 www 89:
90: # ------------------------------------------------------ Initialize Environment
91:
92: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
1.30 www 93:
94: # --------------------------------------------------------- Initialize Language
95:
1.31 www 96: &Apache::lonlocal::get_language_handle($r);
1.28 www 97:
98: # -------------------------------------------------------------- Resource State
99:
1.9 www 100: $ENV{'request.state'} = "construct";
101: $ENV{'request.filename'} = $r->filename;
1.15 www 102:
103: unless (&constructaccess($requrl,$r->dir_config('lonDefDomain'))) {
104: $r->log_reason("Unauthorized $requrl", $r->filename);
105: return HTTP_NOT_ACCEPTABLE;
1.26 www 106: }
107: # Construction space needs Remote to work
108: if ($ENV{'environment.remote'} eq 'off') {
109: $r->content_type('text/html');
110: $r->header_out(Location =>
111: 'http://'.$r->server->server_hostname.
112: '/adm/remote?action=launch&url='.
113: &Apache::lonnet::escape($requrl));
114: return REDIRECT;
1.15 www 115: }
1.9 www 116:
117: # -------------------------------------------------------- Load POST parameters
118:
1.28 www 119: &Apache::loncommon::get_posted_cgi($r);
1.8 www 120:
1.1 albertel 121: return OK;
122: } else {
1.35 ! albertel 123: &Apache::lonnet::logthis("Invalid cookie");
1.1 albertel 124: $r->log_reason("Cookie $handle not valid", $r->filename)
125: };
126: }
1.6 www 127:
128: # ----------------------------------------------- Store where they wanted to go
129:
130: $ENV{'request.firsturl'}=$requrl;
1.1 albertel 131: return FORBIDDEN;
132: }
133:
134: 1;
135: __END__
136:
1.20 www 137: =head1 NAME
138:
139: Apache::lonacc - Cookie Based Access Handler for Construction Area
140:
141: =head1 SYNOPSIS
142:
1.23 albertel 143: Invoked (for various locations) by /etc/httpd/conf/loncapa_apache.conf:
1.20 www 144:
145: PerlAccessHandler Apache::loncacc
146:
147: =head1 INTRODUCTION
148:
149: This module enables cookie based authentication for construction area
150: and is used to control access for three (essentially equivalent) URIs.
151:
152: <LocationMatch "^/priv.*">
153: <LocationMatch "^/\~.*">
154: <LocationMatch "^/\~.*/$">
155:
156: Whenever the client sends the cookie back to the server,
157: if the cookie is missing or invalid, the user is re-challenged
158: for login information.
159:
160: This is part of the LearningOnline Network with CAPA project
161: described at http://www.lon-capa.org.
162:
163: =head1 HANDLER SUBROUTINE
164:
165: This routine is called by Apache and mod_perl.
166:
167: =over 4
168:
169: =item *
170:
171: load POST parameters
172:
173: =item *
174:
175: store where they wanted to go (first url entered)
176:
177: =back
178:
179: =head1 OTHERSUBROUTINES
180:
181: =over 4
182:
183: =item *
184:
185: constructaccess($url,$ownerdomain) : See if the owner domain and name
186: in the URL match those in the expected environment. If so, return
187: two element list ($ownername,$ownerdomain). Else, return null string.
188:
189: =back
190:
191: =cut
1.1 albertel 192:
193:
194:
195:
196:
197:
198:
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