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
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
|
<?php
/**
* Server layer over the OAuthRequest handler
*
* @version $Id: OAuthServer.php 51 2008-10-15 15:15:47Z marcw@pobox.com $
* @author Marc Worrell <marcw@pobox.com>
* @date Nov 27, 2007 12:36:38 PM
*
*
* The MIT License
*
* Copyright (c) 2007-2008 Mediamatic Lab
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
require_once 'OAuthRequestVerifier.php';
class OAuthServer extends OAuthRequestVerifier
{
/**
* Handle the request_token request.
* Returns the new request token and request token secret.
*
* TODO: add correct result code to exception
*
* @return string returned request token, false on an error
*/
public function requestToken ()
{
OAuthRequestLogger::start($this);
try
{
$this->verify(false);
$options = array();
$ttl = $this->getParam('xoauth_token_ttl', false);
if ($ttl)
{
$options['token_ttl'] = $ttl;
}
// Create a request token
$store = elggconnect_get_oauth_store();//OAuthStore::instance();
$token = $store->addConsumerRequestToken($this->getParam('oauth_consumer_key', true), $options);
$result = 'oauth_token='.$this->urlencode($token['token'])
.'&oauth_token_secret='.$this->urlencode($token['token_secret']);
if (!empty($token['token_ttl']))
{
$result .= '&xoauth_token_ttl='.$this->urlencode($token['token_ttl']);
}
$request_token = $token['token'];
header('HTTP/1.1 200 OK');
header('Content-Length: '.strlen($result));
header('Content-Type: application/x-www-form-urlencoded');
echo $result;
}
catch (OAuthException $e)
{
$request_token = false;
header('HTTP/1.1 401 Unauthorized');
header('Content-Type: text/plain');
echo "OAuth Verification Failed: " . $e->getMessage();
}
OAuthRequestLogger::flush();
return $request_token;
}
/**
* Verify the start of an authorization request. Verifies if the request token is valid.
* Next step is the method authorizeFinish()
*
* Nota bene: this stores the current token, consumer key and callback in the _SESSION
*
* @exception OAuthException thrown when not a valid request
* @return array token description
*/
public function authorizeVerify ( )
{
OAuthRequestLogger::start($this);
$store = elggconnect_get_oauth_store();//OAuthStore::instance();
$token = $this->getParam('oauth_token', true);
$rs = $store->getConsumerRequestToken($token);
if (empty($rs))
{
throw new OAuthException('Unknown request token "'.$token.'"');
}
// We need to remember the callback
if ( empty($_SESSION['verify_oauth_token'])
|| strcmp($_SESSION['verify_oauth_token'], $rs['token']))
{
$_SESSION['verify_oauth_token'] = $rs['token'];
$_SESSION['verify_oauth_consumer_key'] = $rs['consumer_key'];
$_SESSION['verify_oauth_callback'] = $this->getParam('oauth_callback', true);
}
OAuthRequestLogger::flush();
return $rs;
}
/**
* Overrule this method when you want to display a nice page when
* the authorization is finished. This function does not know if the authorization was
* succesfull, you need to check the token in the database.
*
* @param boolean authorized if the current token (oauth_token param) is authorized or not
* @param int user_id user for which the token was authorized (or denied)
*/
public function authorizeFinish ( $authorized, $user_id )
{
OAuthRequestLogger::start($this);
$token = $this->getParam('oauth_token', true);
if ( isset($_SESSION['verify_oauth_token'])
&& $_SESSION['verify_oauth_token'] == $token)
{
// Flag the token as authorized, or remove the token when not authorized
$store = elggconnect_get_oauth_store();//OAuthStore::instance();
// Fetch the referrer host from the oauth callback parameter
$referrer_host = '';
$oauth_callback = false;
if (!empty($_SESSION['verify_oauth_callback']))
{
$oauth_callback = $_SESSION['verify_oauth_callback'];
$ps = parse_url($oauth_callback);
if (isset($ps['host']))
{
$referrer_host = $ps['host'];
}
}
if ($authorized)
{
OAuthRequestLogger::addNote('Authorized token "'.$token.'" for user '.$user_id.' with referrer "'.$referrer_host.'"');
$store->authorizeConsumerRequestToken($token, $user_id, $referrer_host);
}
else
{
OAuthRequestLogger::addNote('Authorization rejected for token "'.$token.'" for user '.$user_id."\nToken has been deleted");
$store->deleteConsumerRequestToken($token);
}
if (!empty($oauth_callback))
{
$this->redirect($oauth_callback, array('oauth_token'=>rawurlencode($token)));
}
}
OAuthRequestLogger::flush();
}
/**
* Exchange a request token for an access token.
* The exchange is only succesful iff the request token has been authorized.
*
* Never returns, calls exit() when token is exchanged or when error is returned.
*/
public function accessToken ()
{
OAuthRequestLogger::start($this);
try
{
$this->verify('request');
$options = array();
$ttl = $this->getParam('xoauth_token_ttl', false);
if ($ttl)
{
$options['token_ttl'] = $ttl;
}
$store = elggconnect_get_oauth_store();//OAuthStore::instance();
$token = $store->exchangeConsumerRequestForAccessToken($this->getParam('oauth_token', true), $options);
$result = 'oauth_token='.$this->urlencode($token['token'])
.'&oauth_token_secret='.$this->urlencode($token['token_secret']);
if (!empty($token['token_ttl']))
{
$result .= '&xoauth_token_ttl='.$this->urlencode($token['token_ttl']);
}
header('HTTP/1.1 200 OK');
header('Content-Length: '.strlen($result));
header('Content-Type: application/x-www-form-urlencoded');
echo $result;
}
catch (OAuthException $e)
{
header('HTTP/1.1 401 Access Denied');
header('Content-Type: text/plain');
echo "OAuth Verification Failed: " . $e->getMessage();
}
OAuthRequestLogger::flush();
exit();
}
}
/* vi:set ts=4 sts=4 sw=4 binary noeol: */
?>
|
