Annotation of loncom/auth/loncacc.pm, revision 1.28
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: #
1.28 ! www 5: # $Id: loncacc.pm,v 1.27 2003/05/06 21:45:25 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);
1.1 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./'.
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;
1.22 www 72: $ENV{'request.editurl'}=$requrl;
1.1 albertel 73: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
74: my $lonid=$cookies{'lonID'};
75: my $cookie;
76: if ($lonid) {
77: my $handle=$lonid->value;
78: $handle=~s/\W//g;
79: my $lonidsdir=$r->dir_config('lonIDsDir');
80: if ((-e "$lonidsdir/$handle.id") && ($handle ne '')) {
1.28 ! www 81:
! 82: # ------------------------------------------------------ Initialize Environment
! 83:
! 84: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
! 85:
! 86: # -------------------------------------------------------------- Resource State
! 87:
1.9 www 88: $ENV{'request.state'} = "construct";
89: $ENV{'request.filename'} = $r->filename;
1.15 www 90:
91: unless (&constructaccess($requrl,$r->dir_config('lonDefDomain'))) {
92: $r->log_reason("Unauthorized $requrl", $r->filename);
93: return HTTP_NOT_ACCEPTABLE;
1.26 www 94: }
95: # Construction space needs Remote to work
96: if ($ENV{'environment.remote'} eq 'off') {
97: $r->content_type('text/html');
98: $r->header_out(Location =>
99: 'http://'.$r->server->server_hostname.
100: '/adm/remote?action=launch&url='.
101: &Apache::lonnet::escape($requrl));
102: return REDIRECT;
1.15 www 103: }
1.9 www 104:
105: # -------------------------------------------------------- Load POST parameters
106:
1.28 ! www 107: &Apache::loncommon::get_posted_cgi($r);
1.8 www 108:
1.1 albertel 109: return OK;
110: } else {
111: $r->log_reason("Cookie $handle not valid", $r->filename)
112: };
113: }
1.6 www 114:
115: # ----------------------------------------------- Store where they wanted to go
116:
117: $ENV{'request.firsturl'}=$requrl;
1.1 albertel 118: return FORBIDDEN;
119: }
120:
121: 1;
122: __END__
123:
1.20 www 124: =head1 NAME
125:
126: Apache::lonacc - Cookie Based Access Handler for Construction Area
127:
128: =head1 SYNOPSIS
129:
1.23 albertel 130: Invoked (for various locations) by /etc/httpd/conf/loncapa_apache.conf:
1.20 www 131:
132: PerlAccessHandler Apache::loncacc
133:
134: =head1 INTRODUCTION
135:
136: This module enables cookie based authentication for construction area
137: and is used to control access for three (essentially equivalent) URIs.
138:
139: <LocationMatch "^/priv.*">
140: <LocationMatch "^/\~.*">
141: <LocationMatch "^/\~.*/$">
142:
143: Whenever the client sends the cookie back to the server,
144: if the cookie is missing or invalid, the user is re-challenged
145: for login information.
146:
147: This is part of the LearningOnline Network with CAPA project
148: described at http://www.lon-capa.org.
149:
150: =head1 HANDLER SUBROUTINE
151:
152: This routine is called by Apache and mod_perl.
153:
154: =over 4
155:
156: =item *
157:
158: load POST parameters
159:
160: =item *
161:
162: store where they wanted to go (first url entered)
163:
164: =back
165:
166: =head1 OTHERSUBROUTINES
167:
168: =over 4
169:
170: =item *
171:
172: constructaccess($url,$ownerdomain) : See if the owner domain and name
173: in the URL match those in the expected environment. If so, return
174: two element list ($ownername,$ownerdomain). Else, return null string.
175:
176: =back
177:
178: =cut
1.1 albertel 179:
180:
181:
182:
183:
184:
185:
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