File:
[LON-CAPA] /
loncom /
auth /
loncacc.pm
Revision
1.45:
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Thu Feb 1 07:13:59 2007 UTC (17 years, 7 months ago) by
albertel
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CVS tags:
version_2_5_X,
version_2_5_2,
version_2_5_1,
version_2_5_0,
version_2_4_X,
version_2_4_99_0,
version_2_4_2,
version_2_4_1,
version_2_4_0,
version_2_3_99_0,
HEAD
- errr meant to only commit lonracc.pm
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)
4: #
5: # $Id: loncacc.pm,v 1.45 2007/02/01 07:13:59 albertel Exp $
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: #
29:
30: package Apache::loncacc;
31:
32: use strict;
33: use Apache::Constants qw(:common :http :methods REDIRECT);
34: use CGI::Cookie();
35: use Fcntl qw(:flock);
36: use Apache::lonlocal;
37: use Apache::lonnet;
38: use Apache::lonacc;
39: use LONCAPA qw(:DEFAULT :match);
40:
41: sub constructaccess {
42: my ($url,$ownerdomain)=@_;
43: my ($ownername)=($url=~/\/(?:\~|priv\/|home\/)($match_username)\//);
44: unless (($ownername) && ($ownerdomain)) { return ''; }
45: # We do not allow editing of previous versions of files.
46: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
47: my @possibledomains = &Apache::lonnet::current_machine_domains();
48: if ($ownername eq $env{'user.name'}) {
49: foreach my $domain (@possibledomains) {
50: if ($domain eq $env{'user.domain'}) {
51: return ($ownername,$domain);
52: }
53: }
54: }
55:
56: foreach my $domain (@possibledomains) {
57: if (exists($env{'user.priv.ca./'.$domain.'/'.$ownername.'./'}) ||
58: exists($env{'user.priv.aa./'.$domain.'/'.$ownername.'./'}) ) {
59: return ($ownername,$domain);
60: }
61: }
62: return '';
63: }
64:
65: sub handler {
66: my $r = shift;
67: my $requrl=$r->uri;
68: $env{'request.editurl'}=$requrl;
69: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
70: my $lonid=$cookies{'lonID'};
71: my $cookie;
72: if ($lonid) {
73: my $handle=&LONCAPA::clean_handle($lonid->value);
74: my $lonidsdir=$r->dir_config('lonIDsDir');
75: if ((-e "$lonidsdir/$handle.id") && ($handle ne '')) {
76:
77: # ------------------------------------------------------ Initialize Environment
78:
79: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
80:
81: # --------------------------------------------------------- Initialize Language
82:
83: &Apache::lonlocal::get_language_handle($r);
84:
85: # -------------------------------------------------------------- Resource State
86:
87: $env{'request.state'} = "construct";
88: $env{'request.filename'} = $r->filename;
89:
90: unless (&constructaccess($requrl,$r->dir_config('lonDefDomain'))) {
91: $r->log_reason("Unauthorized $requrl", $r->filename);
92: return HTTP_NOT_ACCEPTABLE;
93: }
94:
95: # -------------------------------------------------------- Load POST parameters
96:
97: &Apache::lonacc::get_posted_cgi($r);
98:
99: return OK;
100: } else {
101: $r->log_reason("Cookie $handle not valid", $r->filename)
102: };
103: }
104:
105: # ----------------------------------------------- Store where they wanted to go
106:
107: $env{'request.firsturl'}=$requrl;
108: return FORBIDDEN;
109: }
110:
111: 1;
112: __END__
113:
114: =head1 NAME
115:
116: Apache::lonacc - Cookie Based Access Handler for Construction Area
117:
118: =head1 SYNOPSIS
119:
120: Invoked (for various locations) by /etc/httpd/conf/loncapa_apache.conf:
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
169:
170:
171:
172:
173:
174:
175:
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