| 1 |
efrain |
1 |
<?php
|
|
|
2 |
/*
|
|
|
3 |
* Copyright 2011 Google Inc.
|
|
|
4 |
*
|
|
|
5 |
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
|
6 |
* you may not use this file except in compliance with the License.
|
|
|
7 |
* You may obtain a copy of the License at
|
|
|
8 |
*
|
|
|
9 |
* http://www.apache.org/licenses/LICENSE-2.0
|
|
|
10 |
*
|
|
|
11 |
* Unless required by applicable law or agreed to in writing, software
|
|
|
12 |
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
|
13 |
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
|
14 |
* See the License for the specific language governing permissions and
|
|
|
15 |
* limitations under the License.
|
|
|
16 |
*/
|
|
|
17 |
|
|
|
18 |
if (!class_exists('Google_Client')) {
|
|
|
19 |
require_once dirname(__FILE__) . '/../autoload.php';
|
|
|
20 |
}
|
|
|
21 |
|
|
|
22 |
/**
|
|
|
23 |
* Signs data.
|
|
|
24 |
*
|
|
|
25 |
* Only used for testing.
|
|
|
26 |
*
|
|
|
27 |
* @author Brian Eaton <beaton@google.com>
|
|
|
28 |
*/
|
|
|
29 |
#[AllowDynamicProperties]
|
|
|
30 |
class Google_Signer_P12 extends Google_Signer_Abstract
|
|
|
31 |
{
|
|
|
32 |
// OpenSSL private key resource
|
|
|
33 |
private $privateKey;
|
|
|
34 |
|
|
|
35 |
// Creates a new signer from a .p12 file.
|
|
|
36 |
public function __construct($p12, $password)
|
|
|
37 |
{
|
|
|
38 |
if (!function_exists('openssl_x509_read')) {
|
|
|
39 |
throw new Google_Exception(
|
|
|
40 |
'The Google PHP API library needs the openssl PHP extension'
|
|
|
41 |
);
|
|
|
42 |
}
|
|
|
43 |
|
|
|
44 |
// If the private key is provided directly, then this isn't in the p12
|
|
|
45 |
// format. Different versions of openssl support different p12 formats
|
|
|
46 |
// and the key from google wasn't being accepted by the version available
|
|
|
47 |
// at the time.
|
|
|
48 |
if (!$password && strpos($p12, "-----BEGIN RSA PRIVATE KEY-----") !== false) {
|
|
|
49 |
$this->privateKey = openssl_pkey_get_private($p12);
|
|
|
50 |
} elseif ($password === 'notasecret' && strpos($p12, "-----BEGIN PRIVATE KEY-----") !== false) {
|
|
|
51 |
$this->privateKey = openssl_pkey_get_private($p12);
|
|
|
52 |
} else {
|
|
|
53 |
// This throws on error
|
|
|
54 |
$certs = array();
|
|
|
55 |
if (!openssl_pkcs12_read($p12, $certs, $password)) {
|
|
|
56 |
throw new Google_Auth_Exception(
|
|
|
57 |
"Unable to parse the p12 file. " .
|
|
|
58 |
"Is this a .p12 file? Is the password correct? OpenSSL error: " .
|
|
|
59 |
openssl_error_string()
|
|
|
60 |
);
|
|
|
61 |
}
|
|
|
62 |
// TODO(beaton): is this part of the contract for the openssl_pkcs12_read
|
|
|
63 |
// method? What happens if there are multiple private keys? Do we care?
|
|
|
64 |
if (!array_key_exists("pkey", $certs) || !$certs["pkey"]) {
|
|
|
65 |
throw new Google_Auth_Exception("No private key found in p12 file.");
|
|
|
66 |
}
|
|
|
67 |
$this->privateKey = openssl_pkey_get_private($certs['pkey']);
|
|
|
68 |
}
|
|
|
69 |
|
|
|
70 |
if (!$this->privateKey) {
|
|
|
71 |
throw new Google_Auth_Exception("Unable to load private key");
|
|
|
72 |
}
|
|
|
73 |
}
|
|
|
74 |
|
|
|
75 |
public function __destruct()
|
|
|
76 |
{
|
|
|
77 |
if ($this->privateKey) {
|
|
|
78 |
// TODO: Remove this block once PHP 8.0 becomes required.
|
|
|
79 |
if (PHP_MAJOR_VERSION < 8) {
|
|
|
80 |
openssl_pkey_free($this->privateKey);
|
|
|
81 |
}
|
|
|
82 |
}
|
|
|
83 |
}
|
|
|
84 |
|
|
|
85 |
public function sign($data)
|
|
|
86 |
{
|
|
|
87 |
if (version_compare(PHP_VERSION, '5.3.0') < 0) {
|
|
|
88 |
throw new Google_Auth_Exception(
|
|
|
89 |
"PHP 5.3.0 or higher is required to use service accounts."
|
|
|
90 |
);
|
|
|
91 |
}
|
|
|
92 |
$hash = defined("OPENSSL_ALGO_SHA256") ? OPENSSL_ALGO_SHA256 : "sha256";
|
|
|
93 |
if (!openssl_sign($data, $signature, $this->privateKey, $hash)) {
|
|
|
94 |
throw new Google_Auth_Exception("Unable to sign data");
|
|
|
95 |
}
|
|
|
96 |
return $signature;
|
|
|
97 |
}
|
|
|
98 |
}
|