324 lines
9.9 KiB
PHP
324 lines
9.9 KiB
PHP
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<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Service
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* @subpackage Amazon
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* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id: Amazon.php 17146 2009-07-26 13:25:34Z beberlei $
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*/
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/**
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* @see Zend_Rest_Client
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*/
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require_once 'Zend/Rest/Client.php';
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/**
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* @category Zend
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* @package Zend_Service
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* @subpackage Amazon
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* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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class Zend_Service_Amazon
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{
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/**
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* Amazon Web Services Access Key ID
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*
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* @var string
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*/
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public $appId;
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/**
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* @var string
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*/
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protected $_secretKey = null;
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/**
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* @var string
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*/
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protected $_baseUri = null;
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/**
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* List of Amazon Web Service base URLs, indexed by country code
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*
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* @var array
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*/
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protected $_baseUriList = array('US' => 'http://webservices.amazon.com',
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'UK' => 'http://webservices.amazon.co.uk',
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'DE' => 'http://webservices.amazon.de',
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'JP' => 'http://webservices.amazon.co.jp',
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'FR' => 'http://webservices.amazon.fr',
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'CA' => 'http://webservices.amazon.ca');
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/**
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* Reference to REST client object
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*
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* @var Zend_Rest_Client
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*/
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protected $_rest = null;
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/**
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* Constructs a new Amazon Web Services Client
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*
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* @param string $appId Developer's Amazon appid
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* @param string $countryCode Country code for Amazon service; may be US, UK, DE, JP, FR, CA
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* @throws Zend_Service_Exception
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* @return Zend_Service_Amazon
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*/
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public function __construct($appId, $countryCode = 'US', $secretKey = null)
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{
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$this->appId = (string) $appId;
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$this->_secretKey = $secretKey;
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$countryCode = (string) $countryCode;
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if (!isset($this->_baseUriList[$countryCode])) {
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/**
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* @see Zend_Service_Exception
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*/
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require_once 'Zend/Service/Exception.php';
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throw new Zend_Service_Exception("Unknown country code: $countryCode");
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}
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$this->_baseUri = $this->_baseUriList[$countryCode];
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}
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/**
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* Search for Items
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*
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* @param array $options Options to use for the Search Query
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* @throws Zend_Service_Exception
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* @return Zend_Service_Amazon_ResultSet
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* @see http://www.amazon.com/gp/aws/sdk/main.html/102-9041115-9057709?s=AWSEcommerceService&v=2005-10-05&p=ApiReference/ItemSearchOperation
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*/
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public function itemSearch(array $options)
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{
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$client = $this->getRestClient();
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$client->setUri($this->_baseUri);
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$defaultOptions = array('ResponseGroup' => 'Small');
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$options = $this->_prepareOptions('ItemSearch', $options, $defaultOptions);
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$client->getHttpClient()->resetParameters();
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$response = $client->restGet('/onca/xml', $options);
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if ($response->isError()) {
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/**
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* @see Zend_Service_Exception
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*/
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require_once 'Zend/Service/Exception.php';
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throw new Zend_Service_Exception('An error occurred sending request. Status code: '
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. $response->getStatus());
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}
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$dom = new DOMDocument();
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$dom->loadXML($response->getBody());
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self::_checkErrors($dom);
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/**
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* @see Zend_Service_Amazon_ResultSet
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*/
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require_once 'Zend/Service/Amazon/ResultSet.php';
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return new Zend_Service_Amazon_ResultSet($dom);
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}
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/**
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* Look up item(s) by ASIN
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*
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* @param string $asin Amazon ASIN ID
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* @param array $options Query Options
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* @see http://www.amazon.com/gp/aws/sdk/main.html/102-9041115-9057709?s=AWSEcommerceService&v=2005-10-05&p=ApiReference/ItemLookupOperation
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* @throws Zend_Service_Exception
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* @return Zend_Service_Amazon_Item|Zend_Service_Amazon_ResultSet
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*/
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public function itemLookup($asin, array $options = array())
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{
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$client = $this->getRestClient();
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$client->setUri($this->_baseUri);
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$client->getHttpClient()->resetParameters();
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$defaultOptions = array('ResponseGroup' => 'Small');
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$options['ItemId'] = (string) $asin;
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$options = $this->_prepareOptions('ItemLookup', $options, $defaultOptions);
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$response = $client->restGet('/onca/xml', $options);
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if ($response->isError()) {
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/**
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* @see Zend_Service_Exception
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*/
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require_once 'Zend/Service/Exception.php';
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throw new Zend_Service_Exception(
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'An error occurred sending request. Status code: ' . $response->getStatus()
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);
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}
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$dom = new DOMDocument();
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$dom->loadXML($response->getBody());
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self::_checkErrors($dom);
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$xpath = new DOMXPath($dom);
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$xpath->registerNamespace('az', 'http://webservices.amazon.com/AWSECommerceService/2005-10-05');
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$items = $xpath->query('//az:Items/az:Item');
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if ($items->length == 1) {
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/**
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* @see Zend_Service_Amazon_Item
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*/
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require_once 'Zend/Service/Amazon/Item.php';
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return new Zend_Service_Amazon_Item($items->item(0));
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}
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/**
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* @see Zend_Service_Amazon_ResultSet
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*/
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require_once 'Zend/Service/Amazon/ResultSet.php';
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return new Zend_Service_Amazon_ResultSet($dom);
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}
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/**
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* Returns a reference to the REST client
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*
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* @return Zend_Rest_Client
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*/
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public function getRestClient()
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{
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if($this->_rest === null) {
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$this->_rest = new Zend_Rest_Client();
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}
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return $this->_rest;
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}
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/**
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* Set REST client
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*
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* @param Zend_Rest_Client
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* @return Zend_Service_Amazon
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*/
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public function setRestClient(Zend_Rest_Client $client)
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{
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$this->_rest = $client;
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return $this;
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}
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/**
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* Prepare options for request
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*
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* @param string $query Action to perform
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* @param array $options User supplied options
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* @param array $defaultOptions Default options
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* @return array
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*/
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protected function _prepareOptions($query, array $options, array $defaultOptions)
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{
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$options['AWSAccessKeyId'] = $this->appId;
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$options['Service'] = 'AWSECommerceService';
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$options['Operation'] = (string) $query;
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$options['Version'] = '2005-10-05';
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// de-canonicalize out sort key
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if (isset($options['ResponseGroup'])) {
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$responseGroup = explode(',', $options['ResponseGroup']);
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if (!in_array('Request', $responseGroup)) {
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$responseGroup[] = 'Request';
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$options['ResponseGroup'] = implode(',', $responseGroup);
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}
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}
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$options = array_merge($defaultOptions, $options);
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if($this->_secretKey !== null) {
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$options['Timestamp'] = gmdate("Y-m-d\TH:i:s\Z");;
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ksort($options);
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$options['Signature'] = self::computeSignature($this->_baseUri, $this->_secretKey, $options);
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}
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return $options;
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}
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/**
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* Compute Signature for Authentication with Amazon Product Advertising Webservices
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*
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* @param string $baseUri
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* @param string $secretKey
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* @param array $options
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* @return string
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*/
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static public function computeSignature($baseUri, $secretKey, array $options)
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{
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require_once "Zend/Crypt/Hmac.php";
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$signature = self::buildRawSignature($baseUri, $options);
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return base64_encode(
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Zend_Crypt_Hmac::compute($secretKey, 'sha256', $signature, Zend_Crypt_Hmac::BINARY)
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);
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}
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/**
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* Build the Raw Signature Text
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*
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* @param string $baseUri
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* @param array $options
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* @return string
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*/
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static public function buildRawSignature($baseUri, $options)
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{
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ksort($options);
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$params = array();
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foreach($options AS $k => $v) {
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$params[] = $k."=".rawurlencode($v);
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}
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return sprintf("GET\n%s\n/onca/xml\n%s",
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str_replace('http://', '', $baseUri),
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implode("&", $params)
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);
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}
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/**
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* Check result for errors
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*
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* @param DOMDocument $dom
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* @throws Zend_Service_Exception
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* @return void
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*/
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protected static function _checkErrors(DOMDocument $dom)
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{
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$xpath = new DOMXPath($dom);
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$xpath->registerNamespace('az', 'http://webservices.amazon.com/AWSECommerceService/2005-10-05');
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if ($xpath->query('//az:Error')->length >= 1) {
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$code = $xpath->query('//az:Error/az:Code/text()')->item(0)->data;
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$message = $xpath->query('//az:Error/az:Message/text()')->item(0)->data;
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switch($code) {
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case 'AWS.ECommerceService.NoExactMatches':
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break;
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default:
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/**
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* @see Zend_Service_Exception
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*/
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require_once 'Zend/Service/Exception.php';
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throw new Zend_Service_Exception("$message ($code)");
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}
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}
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}
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}
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