1 <?php

     2 /**

     3  * Zend Framework

     4  *

     5  * LICENSE

     6  *

     7  * This source file is subject to the new BSD license that is bundled

     8  * with this package in the file LICENSE.txt.

     9  * It is also available through the world-wide-web at this URL:

    10  * http://framework.zend.com/license/new-bsd

    11  * If you did not receive a copy of the license and are unable to

    12  * obtain it through the world-wide-web, please send an email

    13  * to license@zend.com so we can send you a copy immediately.

    14  *

    15  * @category   Zend

    16  * @package    Zend_Service_Amazon

    17  * @subpackage Authentication

    18  * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

    19  * @license    http://framework.zend.com/license/new-bsd     New BSD License

    20  */

    21 

    22 /**

    23  * @see Zend_Service_Amazon_Authentication

    24  */

    25 require_once 'Zend/Service/Amazon/Authentication.php';

    26 

    27 /**

    28  * @see Zend_Crypt_Hmac

    29  */

    30 require_once 'Zend/Crypt/Hmac.php';

    31 

    32 /**

    33  * @category   Zend

    34  * @package    Zend_Service_Amazon

    35  * @subpackage Authentication

    36  * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

    37  * @license    http://framework.zend.com/license/new-bsd     New BSD License

    38  */

    39 class Zend_Service_Amazon_Authentication_V1 extends Zend_Service_Amazon_Authentication

    40 {

    41     /**

    42      * Signature Version

    43      */

    44     protected $_signatureVersion = '1';

    45 

    46     /**

    47      * Signature Encoding Method

    48      */

    49     protected $_signatureMethod = 'HmacSHA256';

    50     

    51     /**

    52      * Generate the required attributes for the signature

    53      * @param string $url

    54      * @param array $parameters

    55      * @return string

    56      */

    57     public function generateSignature($url, array &$parameters)

    58     {

    59         $parameters['AWSAccessKeyId']   = $this->_accessKey;

    60         $parameters['SignatureVersion'] = $this->_signatureVersion;

    61         $parameters['Version']          = $this->_apiVersion;

    62         if(!isset($parameters['Timestamp'])) {

    63             $parameters['Timestamp']    = gmdate('Y-m-d\TH:i:s\Z', time()+10);

    64         }

    65 

    66         $data = $this->_signParameters($url, $parameters);

    67         

    68         return $data;

    69     }

    70 

    71     /**

    72      * Computes the RFC 2104-compliant HMAC signature for request parameters

    73      *

    74      * This implements the Amazon Web Services signature, as per the following

    75      * specification:

    76      *

    77      * 1. Sort all request parameters (including <tt>SignatureVersion</tt> and

    78      *    excluding <tt>Signature</tt>, the value of which is being created),

    79      *    ignoring case.

    80      *

    81      * 2. Iterate over the sorted list and append the parameter name (in its

    82      *    original case) and then its value. Do not URL-encode the parameter

    83      *    values before constructing this string. Do not use any separator

    84      *    characters when appending strings.

    85      *

    86      * @param  string $queue_url  Queue URL

    87      * @param  array  $parameters the parameters for which to get the signature.

    88      *

    89      * @return string the signed data.

    90      */

    91     protected function _signParameters($url, array &$paramaters)

    92     {

    93         $data = '';

    94 

    95         uksort($paramaters, 'strcasecmp');

    96         unset($paramaters['Signature']);

    97 

    98         foreach($paramaters as $key => $value) {

    99             $data .= $key . $value;

   100         }

   101 

   102         $hmac = Zend_Crypt_Hmac::compute($this->_secretKey, 'SHA1', $data, Zend_Crypt_Hmac::BINARY);

   103 

   104         $paramaters['Signature'] = base64_encode($hmac);

   105         

   106         return $data;

   107     }

   108 }