Annotation of loncom/auth/loncacc.pm, revision 1.38
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: #
1.38 ! albertel 5: # $Id: loncacc.pm,v 1.37 2004/10/29 20:44:30 raeburn 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);
1.7 www 34: use Apache::File;
1.1 albertel 35: use CGI::Cookie();
1.14 www 36: use Fcntl qw(:flock);
1.30 www 37: use Apache::lonlocal;
1.38 ! albertel 38: use Apache::lonnet;
1.33 albertel 39:
1.1 albertel 40:
1.15 www 41: sub constructaccess {
42: my ($url,$ownerdomain)=@_;
1.32 www 43: my ($ownername)=($url=~/\/(?:\~|priv\/|home\/)(\w+)\//);
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) {
57: my $capriv='user.priv.ca./'.$domain.'/'.$ownername.'./';
1.38 ! albertel 58: foreach (keys %env) {
1.33 albertel 59: if ($_ eq $capriv) {
60: return ($ownername,$domain);
61: }
62: }
1.20 www 63: }
1.15 www 64: return '';
65: }
66:
1.1 albertel 67: sub handler {
68: my $r = shift;
69: my $requrl=$r->uri;
1.38 ! albertel 70: $env{'request.editurl'}=$requrl;
1.1 albertel 71: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
72: my $lonid=$cookies{'lonID'};
73: my $cookie;
74: if ($lonid) {
75: my $handle=$lonid->value;
76: $handle=~s/\W//g;
77: my $lonidsdir=$r->dir_config('lonIDsDir');
78: if ((-e "$lonidsdir/$handle.id") && ($handle ne '')) {
1.28 www 79:
80: # ------------------------------------------------------ Initialize Environment
81:
82: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
1.30 www 83:
84: # --------------------------------------------------------- Initialize Language
85:
1.31 www 86: &Apache::lonlocal::get_language_handle($r);
1.28 www 87:
88: # -------------------------------------------------------------- Resource State
89:
1.38 ! albertel 90: $env{'request.state'} = "construct";
! 91: $env{'request.filename'} = $r->filename;
1.15 www 92:
93: unless (&constructaccess($requrl,$r->dir_config('lonDefDomain'))) {
94: $r->log_reason("Unauthorized $requrl", $r->filename);
95: return HTTP_NOT_ACCEPTABLE;
1.26 www 96: }
1.9 www 97:
98: # -------------------------------------------------------- Load POST parameters
99:
1.28 www 100: &Apache::loncommon::get_posted_cgi($r);
1.8 www 101:
1.1 albertel 102: return OK;
103: } else {
104: $r->log_reason("Cookie $handle not valid", $r->filename)
105: };
106: }
1.6 www 107:
108: # ----------------------------------------------- Store where they wanted to go
109:
1.38 ! albertel 110: $env{'request.firsturl'}=$requrl;
1.1 albertel 111: return FORBIDDEN;
112: }
113:
114: 1;
115: __END__
116:
1.20 www 117: =head1 NAME
118:
119: Apache::lonacc - Cookie Based Access Handler for Construction Area
120:
121: =head1 SYNOPSIS
122:
1.23 albertel 123: Invoked (for various locations) by /etc/httpd/conf/loncapa_apache.conf:
1.20 www 124:
125: PerlAccessHandler Apache::loncacc
126:
127: =head1 INTRODUCTION
128:
129: This module enables cookie based authentication for construction area
130: and is used to control access for three (essentially equivalent) URIs.
131:
132: <LocationMatch "^/priv.*">
133: <LocationMatch "^/\~.*">
134: <LocationMatch "^/\~.*/$">
135:
136: Whenever the client sends the cookie back to the server,
137: if the cookie is missing or invalid, the user is re-challenged
138: for login information.
139:
140: This is part of the LearningOnline Network with CAPA project
141: described at http://www.lon-capa.org.
142:
143: =head1 HANDLER SUBROUTINE
144:
145: This routine is called by Apache and mod_perl.
146:
147: =over 4
148:
149: =item *
150:
151: load POST parameters
152:
153: =item *
154:
155: store where they wanted to go (first url entered)
156:
157: =back
158:
159: =head1 OTHERSUBROUTINES
160:
161: =over 4
162:
163: =item *
164:
165: constructaccess($url,$ownerdomain) : See if the owner domain and name
166: in the URL match those in the expected environment. If so, return
167: two element list ($ownername,$ownerdomain). Else, return null string.
168:
169: =back
170:
171: =cut
1.1 albertel 172:
173:
174:
175:
176:
177:
178:
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