Annotation of loncom/auth/loncacc.pm, revision 1.46
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: #
1.46 ! albertel 5: # $Id: loncacc.pm,v 1.45 2007/02/01 07:13:59 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: #
1.1 albertel 29:
30: package Apache::loncacc;
31:
32: use strict;
1.26 www 33: use Apache::Constants qw(:common :http :methods REDIRECT);
1.45 albertel 34: use Fcntl qw(:flock);
1.30 www 35: use Apache::lonlocal;
1.38 albertel 36: use Apache::lonnet;
1.45 albertel 37: use Apache::lonacc;
1.43 albertel 38: use LONCAPA qw(:DEFAULT :match);
1.1 albertel 39:
1.15 www 40: sub constructaccess {
41: my ($url,$ownerdomain)=@_;
1.45 albertel 42: my ($ownername)=($url=~/\/(?:\~|priv\/|home\/)($match_username)\//);
1.15 www 43: unless (($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: }
1.45 albertel 54:
1.33 albertel 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;
1.46 ! albertel 68:
! 69: my $handle = &Apache::lonnet::check_for_valid_session($r);
! 70: if ($handle ne '') {
1.28 www 71:
72: # ------------------------------------------------------ Initialize Environment
1.46 ! albertel 73: my $lonidsdir=$r->dir_config('lonIDsDir');
! 74: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
1.30 www 75:
76: # --------------------------------------------------------- Initialize Language
77:
1.46 ! albertel 78: &Apache::lonlocal::get_language_handle($r);
1.28 www 79:
80: # -------------------------------------------------------------- Resource State
81:
1.46 ! albertel 82: $env{'request.state'} = "construct";
! 83: $env{'request.filename'} = $r->filename;
1.15 www 84:
1.46 ! albertel 85: unless (&constructaccess($requrl,$r->dir_config('lonDefDomain'))) {
! 86: $r->log_reason("Unauthorized $requrl", $r->filename);
! 87: return HTTP_NOT_ACCEPTABLE;
! 88: }
1.9 www 89:
90: # -------------------------------------------------------- Load POST parameters
91:
1.46 ! albertel 92: &Apache::lonacc::get_posted_cgi($r);
1.8 www 93:
1.46 ! albertel 94: return OK;
! 95: } else {
! 96: $r->log_reason("Cookie $handle not valid", $r->filename)
1.1 albertel 97: }
1.6 www 98:
99: # ----------------------------------------------- Store where they wanted to go
100:
1.38 albertel 101: $env{'request.firsturl'}=$requrl;
1.1 albertel 102: return FORBIDDEN;
103: }
104:
105: 1;
106: __END__
107:
1.20 www 108: =head1 NAME
109:
110: Apache::lonacc - Cookie Based Access Handler for Construction Area
111:
112: =head1 SYNOPSIS
113:
1.23 albertel 114: Invoked (for various locations) by /etc/httpd/conf/loncapa_apache.conf:
1.20 www 115:
116: PerlAccessHandler Apache::loncacc
117:
118: =head1 INTRODUCTION
119:
120: This module enables cookie based authentication for construction area
121: and is used to control access for three (essentially equivalent) URIs.
122:
123: <LocationMatch "^/priv.*">
124: <LocationMatch "^/\~.*">
125: <LocationMatch "^/\~.*/$">
126:
127: Whenever the client sends the cookie back to the server,
128: if the cookie is missing or invalid, the user is re-challenged
129: for login information.
130:
131: This is part of the LearningOnline Network with CAPA project
132: described at http://www.lon-capa.org.
133:
134: =head1 HANDLER SUBROUTINE
135:
136: This routine is called by Apache and mod_perl.
137:
138: =over 4
139:
140: =item *
141:
142: load POST parameters
143:
144: =item *
145:
146: store where they wanted to go (first url entered)
147:
148: =back
149:
150: =head1 OTHERSUBROUTINES
151:
152: =over 4
153:
154: =item *
155:
156: constructaccess($url,$ownerdomain) : See if the owner domain and name
157: in the URL match those in the expected environment. If so, return
158: two element list ($ownername,$ownerdomain). Else, return null string.
159:
160: =back
161:
162: =cut
1.1 albertel 163:
164:
165:
166:
167:
168:
169:
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