Annotation of loncom/auth/loncacc.pm, revision 1.42
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: #
1.42 ! albertel 5: # $Id: loncacc.pm,v 1.41 2006/04/13 19:07:33 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;
1.1 albertel 39:
1.15 www 40: sub constructaccess {
41: my ($url,$ownerdomain)=@_;
1.32 www 42: my ($ownername)=($url=~/\/(?:\~|priv\/|home\/)(\w+)\//);
1.15 www 43: unless (($ownername) && ($ownerdomain)) { return ''; }
1.24 matthew 44: # We do not allow editing of previous versions of files.
45: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
1.33 albertel 46: my @possibledomains = &Apache::lonnet::current_machine_domains();
1.38 albertel 47: if ($ownername eq $env{'user.name'}) {
1.33 albertel 48: foreach my $domain (@possibledomains) {
1.38 albertel 49: if ($domain eq $env{'user.domain'}) {
1.33 albertel 50: return ($ownername,$domain);
51: }
52: }
1.15 www 53: }
1.33 albertel 54:
55: foreach my $domain (@possibledomains) {
1.40 albertel 56: if (exists($env{'user.priv.ca./'.$domain.'/'.$ownername.'./'}) ||
57: exists($env{'user.priv.aa./'.$domain.'/'.$ownername.'./'}) ) {
58: return ($ownername,$domain);
1.39 www 59: }
1.20 www 60: }
1.15 www 61: return '';
62: }
63:
1.1 albertel 64: sub handler {
65: my $r = shift;
66: my $requrl=$r->uri;
1.38 albertel 67: $env{'request.editurl'}=$requrl;
1.1 albertel 68: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
69: my $lonid=$cookies{'lonID'};
70: my $cookie;
71: if ($lonid) {
1.42 ! albertel 72: my $handle=&LONCAPA::clean_handle($lonid->value);
1.1 albertel 73: my $lonidsdir=$r->dir_config('lonIDsDir');
74: if ((-e "$lonidsdir/$handle.id") && ($handle ne '')) {
1.28 www 75:
76: # ------------------------------------------------------ Initialize Environment
77:
78: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
1.30 www 79:
80: # --------------------------------------------------------- Initialize Language
81:
1.31 www 82: &Apache::lonlocal::get_language_handle($r);
1.28 www 83:
84: # -------------------------------------------------------------- Resource State
85:
1.38 albertel 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", $r->filename);
91: return HTTP_NOT_ACCEPTABLE;
1.26 www 92: }
1.9 www 93:
94: # -------------------------------------------------------- Load POST parameters
95:
1.41 albertel 96: &Apache::lonacc::get_posted_cgi($r);
1.8 www 97:
1.1 albertel 98: return OK;
99: } else {
100: $r->log_reason("Cookie $handle not valid", $r->filename)
101: };
102: }
1.6 www 103:
104: # ----------------------------------------------- Store where they wanted to go
105:
1.38 albertel 106: $env{'request.firsturl'}=$requrl;
1.1 albertel 107: return FORBIDDEN;
108: }
109:
110: 1;
111: __END__
112:
1.20 www 113: =head1 NAME
114:
115: Apache::lonacc - Cookie Based Access Handler for Construction Area
116:
117: =head1 SYNOPSIS
118:
1.23 albertel 119: Invoked (for various locations) by /etc/httpd/conf/loncapa_apache.conf:
1.20 www 120:
121: PerlAccessHandler Apache::loncacc
122:
123: =head1 INTRODUCTION
124:
125: This module enables cookie based authentication for construction area
126: and is used to control access for three (essentially equivalent) URIs.
127:
128: <LocationMatch "^/priv.*">
129: <LocationMatch "^/\~.*">
130: <LocationMatch "^/\~.*/$">
131:
132: Whenever the client sends the cookie back to the server,
133: if the cookie is missing or invalid, the user is re-challenged
134: for login information.
135:
136: This is part of the LearningOnline Network with CAPA project
137: described at http://www.lon-capa.org.
138:
139: =head1 HANDLER SUBROUTINE
140:
141: This routine is called by Apache and mod_perl.
142:
143: =over 4
144:
145: =item *
146:
147: load POST parameters
148:
149: =item *
150:
151: store where they wanted to go (first url entered)
152:
153: =back
154:
155: =head1 OTHERSUBROUTINES
156:
157: =over 4
158:
159: =item *
160:
161: constructaccess($url,$ownerdomain) : See if the owner domain and name
162: in the URL match those in the expected environment. If so, return
163: two element list ($ownername,$ownerdomain). Else, return null string.
164:
165: =back
166:
167: =cut
1.1 albertel 168:
169:
170:
171:
172:
173:
174:
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