Annotation of loncom/auth/loncacc.pm, revision 1.44
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: #
1.44 ! albertel 5: # $Id: loncacc.pm,v 1.43 2006/11/27 16:47:16 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();
1.30 www 35: use Apache::lonlocal;
1.38 albertel 36: use Apache::lonnet;
1.44 ! 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)=@_;
1.44 ! albertel 42: my ($ownername)=($url=~m{/(?:\~|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 $env{'user.domain'}) {
1.44 ! albertel 50: &Apache::lonnet::logthis("good1!");
1.33 albertel 51: return ($ownername,$domain);
52: }
53: }
1.15 www 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.'/'.$ownername.'./'}) ) {
1.44 ! albertel 58: &Apache::lonnet::logthis("good2!");
1.40 albertel 59: return ($ownername,$domain);
1.39 www 60: }
1.20 www 61: }
1.44 ! albertel 62: &Apache::lonnet::logthis("boo! hiss!");
1.15 www 63: return '';
64: }
65:
1.1 albertel 66: sub handler {
67: my $r = shift;
1.44 ! albertel 68:
1.1 albertel 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) {
1.42 albertel 75: my $handle=&LONCAPA::clean_handle($lonid->value);
1.1 albertel 76: my $lonidsdir=$r->dir_config('lonIDsDir');
77: if ((-e "$lonidsdir/$handle.id") && ($handle ne '')) {
1.28 www 78:
79: # ------------------------------------------------------ Initialize Environment
80:
81: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
1.30 www 82:
83: # --------------------------------------------------------- Initialize Language
84:
1.31 www 85: &Apache::lonlocal::get_language_handle($r);
1.28 www 86:
87: # -------------------------------------------------------------- Resource State
88:
1.38 albertel 89: $env{'request.state'} = "construct";
90: $env{'request.filename'} = $r->filename;
1.15 www 91:
92: unless (&constructaccess($requrl,$r->dir_config('lonDefDomain'))) {
93: $r->log_reason("Unauthorized $requrl", $r->filename);
94: return HTTP_NOT_ACCEPTABLE;
1.26 www 95: }
1.9 www 96:
97: # -------------------------------------------------------- Load POST parameters
98:
1.41 albertel 99: &Apache::lonacc::get_posted_cgi($r);
1.8 www 100:
1.1 albertel 101: return OK;
102: } else {
103: $r->log_reason("Cookie $handle not valid", $r->filename)
104: };
105: }
1.6 www 106:
107: # ----------------------------------------------- Store where they wanted to go
108:
1.38 albertel 109: $env{'request.firsturl'}=$requrl;
1.1 albertel 110: return FORBIDDEN;
111: }
112:
113: 1;
114: __END__
115:
1.20 www 116: =head1 NAME
117:
118: Apache::lonacc - Cookie Based Access Handler for Construction Area
119:
120: =head1 SYNOPSIS
121:
1.23 albertel 122: Invoked (for various locations) by /etc/httpd/conf/loncapa_apache.conf:
1.20 www 123:
124: PerlAccessHandler Apache::loncacc
125:
126: =head1 INTRODUCTION
127:
128: This module enables cookie based authentication for construction area
129: and is used to control access for three (essentially equivalent) URIs.
130:
131: <LocationMatch "^/priv.*">
132: <LocationMatch "^/\~.*">
133: <LocationMatch "^/\~.*/$">
134:
135: Whenever the client sends the cookie back to the server,
136: if the cookie is missing or invalid, the user is re-challenged
137: for login information.
138:
139: This is part of the LearningOnline Network with CAPA project
140: described at http://www.lon-capa.org.
141:
142: =head1 HANDLER SUBROUTINE
143:
144: This routine is called by Apache and mod_perl.
145:
146: =over 4
147:
148: =item *
149:
150: load POST parameters
151:
152: =item *
153:
154: store where they wanted to go (first url entered)
155:
156: =back
157:
158: =head1 OTHERSUBROUTINES
159:
160: =over 4
161:
162: =item *
163:
164: constructaccess($url,$ownerdomain) : See if the owner domain and name
165: in the URL match those in the expected environment. If so, return
166: two element list ($ownername,$ownerdomain). Else, return null string.
167:
168: =back
169:
170: =cut
1.1 albertel 171:
172:
173:
174:
175:
176:
177:
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