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
|
<?php
/**
* StatusNet, the distributed open-source microblogging tool
*
* Issue temporary OAuth credentials (a request token)
*
* 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 2010 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/apioauth.php';
/**
* Issue temporary OAuth credentials (a request token)
*
* @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 ApiOauthRequestTokenAction extends ApiOauthAction
{
/**
* Take arguments for running
*
* @param array $args $_REQUEST args
*
* @return boolean success flag
*
*/
function prepare($args)
{
parent::prepare($args);
// XXX: support "force_login" parameter like Twitter? (Forces the user to enter
// their credentials to ensure the correct users account is authorized.)
return true;
}
/**
* Handle a request for temporary OAuth credentials
*
* Make sure the request is kosher, then emit a set of temporary
* credentials -- AKA an unauthorized request token.
*
* @param array $args array of arguments
*
* @return void
*/
function handle($args)
{
parent::handle($args);
$datastore = new ApiStatusNetOAuthDataStore();
$server = new OAuthServer($datastore);
$hmac_method = new OAuthSignatureMethod_HMAC_SHA1();
$server->add_signature_method($hmac_method);
try {
$req = OAuthRequest::from_request();
// verify callback
if (!$this->verifyCallback($req->get_parameter('oauth_callback'))) {
throw new OAuthException(
"You must provide a valid URL or 'oob' in oauth_callback.",
400
);
}
// check signature and issue a new request token
$token = $server->fetch_request_token($req);
common_log(
LOG_INFO,
sprintf(
"API OAuth - Issued request token %s for consumer %s with oauth_callback %s",
$token->key,
$req->get_parameter('oauth_consumer_key'),
"'" . $req->get_parameter('oauth_callback') ."'"
)
);
// return token to the client
$this->showRequestToken($token);
} catch (OAuthException $e) {
common_log(LOG_WARNING, 'API OAuthException - ' . $e->getMessage());
// Return 401 for for bad credentials or signature problems,
// and 400 for missing or unsupported parameters
$code = $e->getCode();
$this->clientError($e->getMessage(), empty($code) ? 401 : $code, 'text');
}
}
/*
* Display temporary OAuth credentials
*/
function showRequestToken($token)
{
header('Content-Type: application/x-www-form-urlencoded');
print $token;
print '&oauth_callback_confirmed=true';
}
/* Make sure the callback parameter contains either a real URL
* or the string 'oob'.
*
* @todo Check for evil/banned URLs here
*
* @return boolean true or false
*/
function verifyCallback($callback)
{
if ($callback == "oob") {
common_debug("OAuth request token requested for out of band client.");
// XXX: Should we throw an error if a client is registered as a
// web application but requests the pin based workflow? For now I'm
// allowing the workflow to proceed and issuing a pin. --Zach
return true;
} else {
return Validate::uri($callback);
}
}
}
|
