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_Shipping
 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: class Mage_Shipping_Model_Config extends Varien_Object
 29: {
 30:     /**
 31:      * Shipping origin settings
 32:      */
 33:     const XML_PATH_ORIGIN_COUNTRY_ID = 'shipping/origin/country_id';
 34:     const XML_PATH_ORIGIN_REGION_ID  = 'shipping/origin/region_id';
 35:     const XML_PATH_ORIGIN_CITY       = 'shipping/origin/city';
 36:     const XML_PATH_ORIGIN_POSTCODE   = 'shipping/origin/postcode';
 37: 
 38:     protected static $_carriers;
 39: 
 40:     /**
 41:      * Retrieve active system carriers
 42:      *
 43:      * @param   mixed $store
 44:      * @return  array
 45:      */
 46:     public function getActiveCarriers($store = null)
 47:     {
 48:         $carriers = array();
 49:         $config = Mage::getStoreConfig('carriers', $store);
 50:         foreach ($config as $code => $carrierConfig) {
 51:             if (Mage::getStoreConfigFlag('carriers/'.$code.'/active', $store)) {
 52:                 $carrierModel = $this->_getCarrier($code, $carrierConfig, $store);
 53:                 if ($carrierModel) {
 54:                     $carriers[$code] = $carrierModel;
 55:                 }
 56:             }
 57:         }
 58:         return $carriers;
 59:     }
 60: 
 61:     /**
 62:      * Retrieve all system carriers
 63:      *
 64:      * @param   mixed $store
 65:      * @return  array
 66:      */
 67:     public function getAllCarriers($store = null)
 68:     {
 69:         $carriers = array();
 70:         $config = Mage::getStoreConfig('carriers', $store);
 71:         foreach ($config as $code => $carrierConfig) {
 72:             $model = $this->_getCarrier($code, $carrierConfig, $store);
 73:             if ($model) {
 74:                 $carriers[$code] = $model;
 75:             }
 76:         }
 77:         return $carriers;
 78:     }
 79: 
 80:     /**
 81:      * Retrieve carrier model instance by carrier code
 82:      *
 83:      * @param   string $carrierCode
 84:      * @param   mixed $store
 85:      * @return  Mage_Usa_Model_Shipping_Carrier_Abstract
 86:      */
 87:     public function getCarrierInstance($carrierCode, $store = null)
 88:     {
 89:         $carrierConfig =  Mage::getStoreConfig('carriers/'.$carrierCode, $store);
 90:         if (!empty($carrierConfig)) {
 91:             return $this->_getCarrier($carrierCode, $carrierConfig, $store);
 92:         }
 93:         return false;
 94:     }
 95: 
 96:     /**
 97:      * Get carrier model object
 98:      *
 99:      * @param string $code
100:      * @param array $config
101:      * @param mixed $store
102:      * @return Mage_Shipping_Model_Carrier_Abstract
103:      */
104:     protected function _getCarrier($code, $config, $store = null)
105:     {
106:         if (!isset($config['model'])) {
107:             return false;
108:         }
109:         $modelName = $config['model'];
110: 
111:         /**
112:          * Added protection from not existing models usage.
113:          * Related with module uninstall process
114:          */
115:         try {
116:             $carrier = Mage::getModel($modelName);
117:         } catch (Exception $e) {
118:             Mage::logException($e);
119:             return false;
120:         }
121:         $carrier->setId($code)->setStore($store);
122:         self::$_carriers[$code] = $carrier;
123:         return self::$_carriers[$code];
124:     }
125: }
126: