-
Notifications
You must be signed in to change notification settings - Fork 1
/
controller.php
173 lines (138 loc) · 5.08 KB
/
controller.php
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
<?php
use Firebase\JWT\JWT;
use Monolog\Logger;
use Monolog\Handler\StreamHandler;
$log = new Logger('name');
$log->pushHandler(new StreamHandler('logs/app.log', Logger::INFO));
function log_info($message, $data) {
global $log;
$log->info($message, $data);
}
function format_response($data, $content_type) {
if($content_type == 'application/json')
return json_encode($data);
else
return http_build_query($data);
}
$app->get('/', function($format='html') use($app) {
$res = $app->response();
$html = render('index', [
'title' => 'IndieAuth Token Endpoint'
]);
$res->body($html);
});
// Exchange an authorization code for an access token
$app->post('/token', function() use($app) {
$req = $app->request();
$accept = $app->request()->headers()->get('Accept');
// bad conneg. if they mention json at all, send json.
// this defaults to form encoded for clients that don't send a header for legacy client support.
if(strpos($accept, 'application/json') !== false)
$content_type = 'application/json';
else
$content_type = 'application/x-www-form-urlencoded';
$app->response()->headers()->set('Content-Type', $content_type);
$params = $req->params();
$log_params = [
'request' => $params
];
if(isset($log_params['request']['code']))
$log_params['request']['code'] = '*** '.strlen($log_params['request']['code']).' ***';
if(isset($log_params['request']['code_verifier']))
$log_params['request']['code_verifier'] = '*** '.strlen($log_params['request']['code_verifier']).' ***';
if(array_key_exists('me', $params)) {
$me = IndieAuth\Client::normalizeMeURL($params['me']);
if(!$me) {
$app->response()->body(format_response([
'error' => 'invalid_parameter',
'error_description' => 'The "me" parameter provided was not valid'
], $content_type));
return;
}
// Try to discover the authorization endpoint for this user
$authorizationEndpoint = IndieAuth\Client::discoverAuthorizationEndpoint($me);
if(!$authorizationEndpoint) {
$app->response()->body(format_response([
'error' => 'missing_authorization_endpoint',
'error_description' => 'No authorization endpoint was discovered'
], $content_type));
return;
}
} else {
$authorizationEndpoint = 'https://indieauth.com/auth';
}
$log_params['Accept'] = $accept;
$log_params['authorization_endpoint'] = $authorizationEndpoint;
log_info('Token Request', $log_params);
// Now verify the authorization code by querying the endpoint
$auth = IndieAuth\Client::verifyIndieAuthCode($authorizationEndpoint, k($params, 'code'), k($params, 'me'), k($params, 'redirect_uri'), k($params, 'client_id'));
if(array_key_exists('error', $auth)) {
$app->response()->body(format_response($auth, $content_type));
} elseif(array_key_exists('me', $auth)) {
// Token is valid!
// $auth['me']
// $auth['scope']
$token_data = [
'me' => $auth['me'],
'issued_by' => 'https://' . Config::$hostname . '/token',
'client_id' => $params['client_id'],
'issued_at' => time(),
'scope' => k($auth, 'scope', ''),
'nonce' => mt_rand(1000000,pow(2,30))
];
$token = JWT::encode($token_data, Config::$jwtKey);
$app->response()->body(format_response([
'me' => $auth['me'],
'scope' => $token_data['scope'],
'access_token' => $token,
'token_type' => 'Bearer'
], $content_type));
} else {
$app->response()->body(format_response([
'error' => 'unknown_error',
'error_description' => 'There was an unknown error verifying the authorization code.',
'auth_response' => $auth
], $content_type));
}
});
// Used by the Micropub endpoint to verify an access token
$app->get('/token', function() use($app) {
$req = $app->request();
// Return a regular HTML page if no token was sent
if($app->request()->headers()->get('Authorization') == '') {
$html = render('index', [
'title' => 'IndieAuth Token Endpoint'
]);
$app->response()->body($html);
return;
}
$content_type = 'application/x-www-form-urlencoded';
if($app->request()->headers()->get('Accept') == 'application/json') {
$content_type = 'application/json';
}
$app->response()->headers()->set('Content-Type', $content_type);
$tokenString = false;
$error_description = false;
$authHeader = $app->request()->headers()->get('Authorization');
if(preg_match('/Bearer (.+)/', $authHeader, $match)) {
$tokenString = $match[1];
}
if($tokenString) {
try {
$token = JWT::decode($tokenString, Config::$jwtKey, ['HS256']);
} catch(Exception $e) {
$token = false;
$error_description = 'The token provided was malformed';
}
if($token) {
$app->response()->body(format_response($token, $content_type));
return;
}
}
$app->response()->setStatus(400);
$error = [
'error' => 'unauthorized',
'error_description' => ($error_description ?: 'An access token is required. Send an HTTP Authorization header such as \'Authorization: Bearer xxxxxx\'')
];
$app->response()->body(format_response($error, $content_type));
});