wp-database-backup / includes / admin / Destination / Google / google-api-php-client / src / auth / Google_P12Signer.php

Google_P12Signer.php in WP Database Backup – Unlimited Database & Files Backup by Backup for WP 6.11, at includes/admin/Destination/Google/google-api-php-client/src/auth/Google_P12Signer.php

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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	/**
19	* Signs data.
20	*
21	* Only used for testing.
22	*
23	* @author Brian Eaton <beaton@google.com>
24	*/
25	class Google_P12Signer extends Google_Signer {
26	// OpenSSL private key resource
27	private $privateKey;
28
29	// Creates a new signer from a .p12 file.
30	function __construct($p12, $password) {
31	if (!function_exists('openssl_x509_read')) {
32	throw new Exception(
33	'The Google PHP API library needs the openssl PHP extension');
34	}
35
36	// This throws on error
37	$certs = array();
38	if (!openssl_pkcs12_read($p12, $certs, $password)) {
39	throw new Google_AuthException("Unable to parse the p12 file. " .
40	"Is this a .p12 file? Is the password correct? OpenSSL error: " .
41	openssl_error_string());
42	}
43	// TODO(beaton): is this part of the contract for the openssl_pkcs12_read
44	// method? What happens if there are multiple private keys? Do we care?
45	if (!array_key_exists("pkey", $certs) \|\| !$certs["pkey"]) {
46	throw new Google_AuthException("No private key found in p12 file.");
47	}
48	$this->privateKey = openssl_pkey_get_private($certs["pkey"]);
49	if (!$this->privateKey) {
50	throw new Google_AuthException("Unable to load private key in ");
51	}
52	}
53
54	function __destruct() {
55	if ($this->privateKey) {
56	openssl_pkey_free($this->privateKey);
57	}
58	}
59
60	function sign($data) {
61	if(version_compare(PHP_VERSION, '5.3.0') < 0) {
62	throw new Google_AuthException(
63	"PHP 5.3.0 or higher is required to use service accounts.");
64	}
65	if (!openssl_sign($data, $signature, $this->privateKey, "sha256")) {
66	throw new Google_AuthException("Unable to sign data");
67	}
68	return $signature;
69	}
70	}
71