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67 lines
2.1 KiB
PHP
67 lines
2.1 KiB
PHP
<?php
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/*
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* Copyright 2011 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* Signs data.
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*
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* Only used for testing.
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*
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* @author Brian Eaton <beaton@google.com>
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*/
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class apiP12Signer extends apiSigner {
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// OpenSSL private key resource
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private $privateKey;
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// Creates a new signer from a .p12 file.
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function __construct($p12file, $password) {
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if (!function_exists('openssl_x509_read')) {
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throw new Exception(
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'The Google PHP API library needs the openssl PHP extension');
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}
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// This throws on error
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$p12 = file_get_contents($p12file);
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$certs = array();
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if (!openssl_pkcs12_read($p12, $certs, $password)) {
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throw new apiAuthException("Unable to parse $p12file. " .
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"Is this a .p12 file? Is the password correct? OpenSSL error: " .
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openssl_error_string());
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}
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// TODO(beaton): is this part of the contract for the openssl_pkcs12_read
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// method? What happens if there are multiple private keys? Do we care?
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if (!array_key_exists("pkey", $certs) || !$certs["pkey"]) {
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throw new apiAuthException("No private key found in p12 file $p12file");
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}
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$this->privateKey = openssl_pkey_get_private($certs["pkey"]);
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if (!$this->privateKey) {
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throw new apiAuthException("Unable to load private key in $p12file");
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}
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}
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function __destruct() {
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if ($this->privateKey) {
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openssl_pkey_free($this->privateKey);
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}
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}
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function sign($data) {
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if (!openssl_sign($data, $signature, $this->privateKey, "sha256")) {
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throw new apiAuthException("Unable to sign data");
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}
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return $signature;
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}
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}
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