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
|
<?php
declare(strict_types=1);
/**
* @copyright Copyright (c) 2017 Lukas Reschke <lukas@statuscode.ch>
*
* @author Christoph Wurst <christoph@winzerhof-wurst.at>
* @author Lukas Reschke <lukas@statuscode.ch>
* @author Roeland Jago Douma <roeland@famdouma.nl>
*
* @license GNU AGPL version 3 or any later version
*
* 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/>.
*
*/
namespace OCA\OAuth2\Controller;
use OC\Authentication\Exceptions\ExpiredTokenException;
use OC\Authentication\Exceptions\InvalidTokenException;
use OC\Authentication\Token\IProvider as TokenProvider;
use OC\Security\Bruteforce\Throttler;
use OCA\OAuth2\Db\AccessTokenMapper;
use OCA\OAuth2\Db\ClientMapper;
use OCA\OAuth2\Exceptions\AccessTokenNotFoundException;
use OCA\OAuth2\Exceptions\ClientNotFoundException;
use OCP\AppFramework\Controller;
use OCP\AppFramework\Http;
use OCP\AppFramework\Http\JSONResponse;
use OCP\AppFramework\Utility\ITimeFactory;
use OCP\IRequest;
use OCP\Security\ICrypto;
use OCP\Security\ISecureRandom;
class OauthApiController extends Controller {
/** @var AccessTokenMapper */
private $accessTokenMapper;
/** @var ClientMapper */
private $clientMapper;
/** @var ICrypto */
private $crypto;
/** @var TokenProvider */
private $tokenProvider;
/** @var ISecureRandom */
private $secureRandom;
/** @var ITimeFactory */
private $time;
/** @var Throttler */
private $throttler;
public function __construct(string $appName,
IRequest $request,
ICrypto $crypto,
AccessTokenMapper $accessTokenMapper,
ClientMapper $clientMapper,
TokenProvider $tokenProvider,
ISecureRandom $secureRandom,
ITimeFactory $time,
Throttler $throttler) {
parent::__construct($appName, $request);
$this->crypto = $crypto;
$this->accessTokenMapper = $accessTokenMapper;
$this->clientMapper = $clientMapper;
$this->tokenProvider = $tokenProvider;
$this->secureRandom = $secureRandom;
$this->time = $time;
$this->throttler = $throttler;
}
/**
* @PublicPage
* @NoCSRFRequired
*
* @param string $grant_type
* @param string $code
* @param string $refresh_token
* @param string $client_id
* @param string $client_secret
* @return JSONResponse
*/
public function getToken($grant_type, $code, $refresh_token, $client_id, $client_secret): JSONResponse {
// We only handle two types
if ($grant_type !== 'authorization_code' && $grant_type !== 'refresh_token') {
return new JSONResponse([
'error' => 'invalid_grant',
], Http::STATUS_BAD_REQUEST);
}
// We handle the initial and refresh tokens the same way
if ($grant_type === 'refresh_token') {
$code = $refresh_token;
}
try {
$accessToken = $this->accessTokenMapper->getByCode($code);
} catch (AccessTokenNotFoundException $e) {
return new JSONResponse([
'error' => 'invalid_request',
], Http::STATUS_BAD_REQUEST);
}
try {
$client = $this->clientMapper->getByUid($accessToken->getClientId());
} catch (ClientNotFoundException $e) {
return new JSONResponse([
'error' => 'invalid_request',
], Http::STATUS_BAD_REQUEST);
}
if (isset($this->request->server['PHP_AUTH_USER'])) {
$client_id = $this->request->server['PHP_AUTH_USER'];
$client_secret = $this->request->server['PHP_AUTH_PW'];
}
// The client id and secret must match. Else we don't provide an access token!
if ($client->getClientIdentifier() !== $client_id || $client->getSecret() !== $client_secret) {
return new JSONResponse([
'error' => 'invalid_client',
], Http::STATUS_BAD_REQUEST);
}
$decryptedToken = $this->crypto->decrypt($accessToken->getEncryptedToken(), $code);
// Obtain the appToken assoicated
try {
$appToken = $this->tokenProvider->getTokenById($accessToken->getTokenId());
} catch (ExpiredTokenException $e) {
$appToken = $e->getToken();
} catch (InvalidTokenException $e) {
//We can't do anything...
$this->accessTokenMapper->delete($accessToken);
return new JSONResponse([
'error' => 'invalid_request',
], Http::STATUS_BAD_REQUEST);
}
// Rotate the apptoken (so the old one becomes invalid basically)
$newToken = $this->secureRandom->generate(72, ISecureRandom::CHAR_UPPER.ISecureRandom::CHAR_LOWER.ISecureRandom::CHAR_DIGITS);
$appToken = $this->tokenProvider->rotate(
$appToken,
$decryptedToken,
$newToken
);
// Expiration is in 1 hour again
$appToken->setExpires($this->time->getTime() + 3600);
$this->tokenProvider->updateToken($appToken);
// Generate a new refresh token and encrypt the new apptoken in the DB
$newCode = $this->secureRandom->generate(128, ISecureRandom::CHAR_UPPER.ISecureRandom::CHAR_LOWER.ISecureRandom::CHAR_DIGITS);
$accessToken->setHashedCode(hash('sha512', $newCode));
$accessToken->setEncryptedToken($this->crypto->encrypt($newToken, $newCode));
$this->accessTokenMapper->update($accessToken);
$this->throttler->resetDelay($this->request->getRemoteAddress(), 'login', ['user' => $appToken->getUID()]);
return new JSONResponse(
[
'access_token' => $newToken,
'token_type' => 'Bearer',
'expires_in' => 3600,
'refresh_token' => $newCode,
'user_id' => $appToken->getUID(),
]
);
}
}
|
