Annotation of loncom/auth/loncacc.pm, revision 1.43
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: #
1.43 ! albertel 5: # $Id: loncacc.pm,v 1.42 2006/11/23 01:49:41 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: #
1.1 albertel 29:
30: package Apache::loncacc;
31:
32: use strict;
1.26 www 33: use Apache::Constants qw(:common :http :methods REDIRECT);
1.1 albertel 34: use CGI::Cookie();
1.14 www 35: use Fcntl qw(:flock);
1.30 www 36: use Apache::lonlocal;
1.38 albertel 37: use Apache::lonnet;
1.41 albertel 38: use Apache::lonacc;
1.43 ! albertel 39: use LONCAPA qw(:DEFAULT :match);
1.1 albertel 40:
1.15 www 41: sub constructaccess {
42: my ($url,$ownerdomain)=@_;
1.43 ! albertel 43: my ($ownername)=($url=~/\/(?:\~|priv\/|home\/)($match_username)\//);
1.15 www 44: unless (($ownername) && ($ownerdomain)) { return ''; }
1.24 matthew 45: # We do not allow editing of previous versions of files.
46: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
1.33 albertel 47: my @possibledomains = &Apache::lonnet::current_machine_domains();
1.38 albertel 48: if ($ownername eq $env{'user.name'}) {
1.33 albertel 49: foreach my $domain (@possibledomains) {
1.38 albertel 50: if ($domain eq $env{'user.domain'}) {
1.33 albertel 51: return ($ownername,$domain);
52: }
53: }
1.15 www 54: }
1.33 albertel 55:
56: foreach my $domain (@possibledomains) {
1.40 albertel 57: if (exists($env{'user.priv.ca./'.$domain.'/'.$ownername.'./'}) ||
58: exists($env{'user.priv.aa./'.$domain.'/'.$ownername.'./'}) ) {
59: return ($ownername,$domain);
1.39 www 60: }
1.20 www 61: }
1.15 www 62: return '';
63: }
64:
1.1 albertel 65: sub handler {
66: my $r = shift;
67: my $requrl=$r->uri;
1.38 albertel 68: $env{'request.editurl'}=$requrl;
1.1 albertel 69: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
70: my $lonid=$cookies{'lonID'};
71: my $cookie;
72: if ($lonid) {
1.42 albertel 73: my $handle=&LONCAPA::clean_handle($lonid->value);
1.1 albertel 74: my $lonidsdir=$r->dir_config('lonIDsDir');
75: if ((-e "$lonidsdir/$handle.id") && ($handle ne '')) {
1.28 www 76:
77: # ------------------------------------------------------ Initialize Environment
78:
79: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
1.30 www 80:
81: # --------------------------------------------------------- Initialize Language
82:
1.31 www 83: &Apache::lonlocal::get_language_handle($r);
1.28 www 84:
85: # -------------------------------------------------------------- Resource State
86:
1.38 albertel 87: $env{'request.state'} = "construct";
88: $env{'request.filename'} = $r->filename;
1.15 www 89:
90: unless (&constructaccess($requrl,$r->dir_config('lonDefDomain'))) {
91: $r->log_reason("Unauthorized $requrl", $r->filename);
92: return HTTP_NOT_ACCEPTABLE;
1.26 www 93: }
1.9 www 94:
95: # -------------------------------------------------------- Load POST parameters
96:
1.41 albertel 97: &Apache::lonacc::get_posted_cgi($r);
1.8 www 98:
1.1 albertel 99: return OK;
100: } else {
101: $r->log_reason("Cookie $handle not valid", $r->filename)
102: };
103: }
1.6 www 104:
105: # ----------------------------------------------- Store where they wanted to go
106:
1.38 albertel 107: $env{'request.firsturl'}=$requrl;
1.1 albertel 108: return FORBIDDEN;
109: }
110:
111: 1;
112: __END__
113:
1.20 www 114: =head1 NAME
115:
116: Apache::lonacc - Cookie Based Access Handler for Construction Area
117:
118: =head1 SYNOPSIS
119:
1.23 albertel 120: Invoked (for various locations) by /etc/httpd/conf/loncapa_apache.conf:
1.20 www 121:
122: PerlAccessHandler Apache::loncacc
123:
124: =head1 INTRODUCTION
125:
126: This module enables cookie based authentication for construction area
127: and is used to control access for three (essentially equivalent) URIs.
128:
129: <LocationMatch "^/priv.*">
130: <LocationMatch "^/\~.*">
131: <LocationMatch "^/\~.*/$">
132:
133: Whenever the client sends the cookie back to the server,
134: if the cookie is missing or invalid, the user is re-challenged
135: for login information.
136:
137: This is part of the LearningOnline Network with CAPA project
138: described at http://www.lon-capa.org.
139:
140: =head1 HANDLER SUBROUTINE
141:
142: This routine is called by Apache and mod_perl.
143:
144: =over 4
145:
146: =item *
147:
148: load POST parameters
149:
150: =item *
151:
152: store where they wanted to go (first url entered)
153:
154: =back
155:
156: =head1 OTHERSUBROUTINES
157:
158: =over 4
159:
160: =item *
161:
162: constructaccess($url,$ownerdomain) : See if the owner domain and name
163: in the URL match those in the expected environment. If so, return
164: two element list ($ownername,$ownerdomain). Else, return null string.
165:
166: =back
167:
168: =cut
1.1 albertel 169:
170:
171:
172:
173:
174:
175:
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