1: <?php
 2: /**
 3:  * Magento
 4:  *
 5:  * NOTICE OF LICENSE
 6:  *
 7:  * This source file is subject to the Open Software License (OSL 3.0)
 8:  * that is bundled with this package in the file LICENSE.txt.
 9:  * It is also available through the world-wide-web at this URL:
10:  * http://opensource.org/licenses/osl-3.0.php
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@magentocommerce.com so we can send you a copy immediately.
14:  *
15:  * DISCLAIMER
16:  *
17:  * Do not edit or add to this file if you wish to upgrade Magento to newer
18:  * versions in the future. If you wish to customize Magento for your
19:  * needs please refer to http://www.magentocommerce.com for more information.
20:  *
21:  * @category    Mage
22:  * @package     Mage_Directory
23:  * @copyright   Copyright (c) 2012 Magento Inc. (http://www.magentocommerce.com)
24:  * @license     http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
25:  */
26: 
27: /**
28:  * Currency rate import model (From www.webservicex.net)
29:  *
30:  * @category   Mage
31:  * @package    Mage_Directory
32:  * @author      Magento Core Team <core@magentocommerce.com>
33:  */
34: class Mage_Directory_Model_Currency_Import_Webservicex extends Mage_Directory_Model_Currency_Import_Abstract
35: {
36:     protected $_url = 'http://www.webservicex.net/CurrencyConvertor.asmx/ConversionRate?FromCurrency={{CURRENCY_FROM}}&ToCurrency={{CURRENCY_TO}}';
37:     protected $_messages = array();
38: 
39:      /**
40:      * HTTP client
41:      *
42:      * @var Varien_Http_Client
43:      */
44:     protected $_httpClient;
45: 
46:     public function __construct()
47:     {
48:         $this->_httpClient = new Varien_Http_Client();
49:     }
50: 
51:     protected function _convert($currencyFrom, $currencyTo, $retry=0)
52:     {
53:         $url = str_replace('{{CURRENCY_FROM}}', $currencyFrom, $this->_url);
54:         $url = str_replace('{{CURRENCY_TO}}', $currencyTo, $url);
55: 
56:         try {
57:             $response = $this->_httpClient
58:                 ->setUri($url)
59:                 ->setConfig(array('timeout' => Mage::getStoreConfig('currency/webservicex/timeout')))
60:                 ->request('GET')
61:                 ->getBody();
62: 
63:             $xml = simplexml_load_string($response, null, LIBXML_NOERROR);
64:             if( !$xml ) {
65:                 $this->_messages[] = Mage::helper('directory')->__('Cannot retrieve rate from %s.', $url);
66:                 return null;
67:             }
68:             return (float) $xml;
69:         }
70:         catch (Exception $e) {
71:             if( $retry == 0 ) {
72:                 $this->_convert($currencyFrom, $currencyTo, 1);
73:             } else {
74:                 $this->_messages[] = Mage::helper('directory')->__('Cannot retrieve rate from %s.', $url);
75:             }
76:         }
77:     }
78: }
79: