1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
<?php
/**
* StatusNet, the distributed open-source microblogging tool
*
* Base class for API actions that require authentication
*
* PHP version 5
*
* LICENCE: This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category API
* @package StatusNet
* @author Zach Copley <zach@status.net>
* @copyright 2009 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*/
if (!defined('STATUSNET')) {
exit(1);
}
require_once INSTALLDIR.'/lib/api.php';
/**
* Actions extending this class will require auth
*
* @category API
* @package StatusNet
* @author Zach Copley <zach@status.net>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*/
class ApiAuthAction extends ApiAction
{
var $auth_user = null;
/**
* Take arguments for running, and output basic auth header if needed
*
* @param array $args $_REQUEST args
*
* @return boolean success flag
*
*/
function prepare($args)
{
parent::prepare($args);
if ($this->requiresAuth()) {
$this->checkBasicAuthUser();
}
return true;
}
/**
* Does this API resource require authentication?
*
* @return boolean true
*/
function requiresAuth()
{
return true;
}
/**
* Check for a user specified via HTTP basic auth. If there isn't
* one, try to get one by outputting the basic auth header.
*
* @return boolean true or false
*/
function checkBasicAuthUser()
{
$this->basicAuthProcessHeader();
if (!isset($this->auth_user)) {
header('WWW-Authenticate: Basic realm="StatusNet API"');
// show error if the user clicks 'cancel'
$this->showBasicAuthError();
exit;
} else {
$nickname = $this->auth_user;
$password = $this->auth_pw;
$this->auth_user = common_check_user($nickname, $password);
if (empty($this->auth_user)) {
// basic authentication failed
list($proxy, $ip) = common_client_ip();
common_log(
LOG_WARNING,
'Failed API auth attempt, nickname = ' .
"$nickname, proxy = $proxy, ip = $ip."
);
$this->showBasicAuthError();
exit;
}
}
return true;
}
/**
* Read the HTTP headers and set the auth user. Decodes HTTP_AUTHORIZATION
* param to support basic auth when PHP is running in CGI mode.
*
* @return void
*/
function basicAuthProcessHeader()
{
if (isset($_SERVER['AUTHORIZATION'])
|| isset($_SERVER['HTTP_AUTHORIZATION'])
) {
$authorization_header = isset($_SERVER['HTTP_AUTHORIZATION'])
? $_SERVER['HTTP_AUTHORIZATION'] : $_SERVER['AUTHORIZATION'];
}
if (isset($_SERVER['PHP_AUTH_USER'])) {
$this->auth_user = $_SERVER['PHP_AUTH_USER'];
$this->auth_pw = $_SERVER['PHP_AUTH_PW'];
} elseif (isset($authorization_header)
&& strstr(substr($authorization_header, 0, 5), 'Basic')) {
// decode the HTTP_AUTHORIZATION header on php-cgi server self
// on fcgid server the header name is AUTHORIZATION
$auth_hash = base64_decode(substr($authorization_header, 6));
list($this->auth_user, $this->auth_pw) = explode(':', $auth_hash);
// set all to null on a empty basic auth request
if ($this->auth_user == "") {
$this->auth_user = null;
$this->auth_pw = null;
}
} else {
$this->auth_user = null;
$this->auth_pw = null;
}
}
/**
* Output an authentication error message. Use XML or JSON if one
* of those formats is specified, otherwise output plain text
*
* @return void
*/
function showBasicAuthError()
{
header('HTTP/1.1 401 Unauthorized');
$msg = 'Could not authenticate you.';
if ($this->arg('format') == 'xml') {
header('Content-Type: application/xml; charset=utf-8');
$this->startXML();
$this->elementStart('hash');
$this->element('error', null, $msg);
$this->element('request', null, $_SERVER['REQUEST_URI']);
$this->elementEnd('hash');
$this->endXML();
} elseif ($this->arg('format') == 'json') {
header('Content-Type: application/json; charset=utf-8');
$error_array = array('error' => $msg,
'request' => $_SERVER['REQUEST_URI']);
print(json_encode($error_array));
} else {
header('Content-type: text/plain');
print "$msg\n";
}
}
}
|
