Annotation of loncom/auth/loncacc.pm, revision 1.34
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: #
1.34 ! albertel 5: # $Id: loncacc.pm,v 1.33 2004/01/27 22:54:59 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 $cookie;
82: if ($lonid) {
83: my $handle=$lonid->value;
84: $handle=~s/\W//g;
85: my $lonidsdir=$r->dir_config('lonIDsDir');
86: if ((-e "$lonidsdir/$handle.id") && ($handle ne '')) {
1.28 www 87:
88: # ------------------------------------------------------ Initialize Environment
89:
90: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
1.30 www 91:
92: # --------------------------------------------------------- Initialize Language
93:
1.31 www 94: &Apache::lonlocal::get_language_handle($r);
1.28 www 95:
96: # -------------------------------------------------------------- Resource State
97:
1.9 www 98: $ENV{'request.state'} = "construct";
99: $ENV{'request.filename'} = $r->filename;
1.15 www 100:
101: unless (&constructaccess($requrl,$r->dir_config('lonDefDomain'))) {
102: $r->log_reason("Unauthorized $requrl", $r->filename);
103: return HTTP_NOT_ACCEPTABLE;
1.26 www 104: }
105: # Construction space needs Remote to work
106: if ($ENV{'environment.remote'} eq 'off') {
107: $r->content_type('text/html');
108: $r->header_out(Location =>
109: 'http://'.$r->server->server_hostname.
110: '/adm/remote?action=launch&url='.
111: &Apache::lonnet::escape($requrl));
112: return REDIRECT;
1.15 www 113: }
1.9 www 114:
115: # -------------------------------------------------------- Load POST parameters
116:
1.28 www 117: &Apache::loncommon::get_posted_cgi($r);
1.8 www 118:
1.1 albertel 119: return OK;
120: } else {
121: $r->log_reason("Cookie $handle not valid", $r->filename)
122: };
123: }
1.6 www 124:
125: # ----------------------------------------------- Store where they wanted to go
126:
127: $ENV{'request.firsturl'}=$requrl;
1.1 albertel 128: return FORBIDDEN;
129: }
130:
131: 1;
132: __END__
133:
1.20 www 134: =head1 NAME
135:
136: Apache::lonacc - Cookie Based Access Handler for Construction Area
137:
138: =head1 SYNOPSIS
139:
1.23 albertel 140: Invoked (for various locations) by /etc/httpd/conf/loncapa_apache.conf:
1.20 www 141:
142: PerlAccessHandler Apache::loncacc
143:
144: =head1 INTRODUCTION
145:
146: This module enables cookie based authentication for construction area
147: and is used to control access for three (essentially equivalent) URIs.
148:
149: <LocationMatch "^/priv.*">
150: <LocationMatch "^/\~.*">
151: <LocationMatch "^/\~.*/$">
152:
153: Whenever the client sends the cookie back to the server,
154: if the cookie is missing or invalid, the user is re-challenged
155: for login information.
156:
157: This is part of the LearningOnline Network with CAPA project
158: described at http://www.lon-capa.org.
159:
160: =head1 HANDLER SUBROUTINE
161:
162: This routine is called by Apache and mod_perl.
163:
164: =over 4
165:
166: =item *
167:
168: load POST parameters
169:
170: =item *
171:
172: store where they wanted to go (first url entered)
173:
174: =back
175:
176: =head1 OTHERSUBROUTINES
177:
178: =over 4
179:
180: =item *
181:
182: constructaccess($url,$ownerdomain) : See if the owner domain and name
183: in the URL match those in the expected environment. If so, return
184: two element list ($ownername,$ownerdomain). Else, return null string.
185:
186: =back
187:
188: =cut
1.1 albertel 189:
190:
191:
192:
193:
194:
195:
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