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File: example/GoogleClient/auth/Google_P12Signer.php

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  Classes of Vivek Muthal  >  Viv OAuth IMAP  >  example/GoogleClient/auth/Google_P12Signer.php  >  Download  
File: example/GoogleClient/auth/Google_P12Signer.php
Role: Example script
Content type: text/plain
Description: Example script
Class: Viv OAuth IMAP
Access messages in IMAP server using OAuth token
Author: By
Last change:
Date: 1 year ago
Size: 2,295 bytes
 

Contents

Class file image Download
<?php
/*
 * Copyright 2011 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * Signs data.
 *
 * Only used for testing.
 *
 * @author Brian Eaton <beaton@google.com>
 */
class Google_P12Signer extends Google_Signer {
 
// OpenSSL private key resource
 
private $privateKey;

 
// Creates a new signer from a .p12 file.
 
function __construct($p12, $password) {
    if (!
function_exists('openssl_x509_read')) {
      throw new
Exception(
         
'The Google PHP API library needs the openssl PHP extension');
    }

   
// This throws on error
   
$certs = array();
    if (!
openssl_pkcs12_read($p12, $certs, $password)) {
      throw new
Google_AuthException("Unable to parse the p12 file. " .
         
"Is this a .p12 file? Is the password correct? OpenSSL error: " .
         
openssl_error_string());
    }
   
// TODO(beaton): is this part of the contract for the openssl_pkcs12_read
    // method? What happens if there are multiple private keys? Do we care?
   
if (!array_key_exists("pkey", $certs) || !$certs["pkey"]) {
      throw new
Google_AuthException("No private key found in p12 file.");
    }
   
$this->privateKey = openssl_pkey_get_private($certs["pkey"]);
    if (!
$this->privateKey) {
      throw new
Google_AuthException("Unable to load private key in ");
    }
  }

  function
__destruct() {
    if (
$this->privateKey) {
     
openssl_pkey_free($this->privateKey);
    }
  }

  function
sign($data) {
    if(
version_compare(PHP_VERSION, '5.3.0') < 0) {
      throw new
Google_AuthException(
       
"PHP 5.3.0 or higher is required to use service accounts.");
    }
    if (!
openssl_sign($data, $signature, $this->privateKey, "sha256")) {
      throw new
Google_AuthException("Unable to sign data");
    }
    return
$signature;
  }
}