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_Core
 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: /**
 29:  * Validator for check not protected file extensions
 30:  *
 31:  * @category   Mage
 32:  * @package    Mage_Core
 33:  * @author     Magento Core Team <core@magentocommerce.com>
 34:  */
 35: class Mage_Core_Model_File_Validator_NotProtectedExtension extends Zend_Validate_Abstract
 36: {
 37:     const PROTECTED_EXTENSION = 'protectedExtension';
 38: 
 39:     /**
 40:      * The file extension
 41:      *
 42:      * @var string
 43:      */
 44:     protected $_value;
 45: 
 46:     /**
 47:      * Protected file types
 48:      *
 49:      * @var array
 50:      */
 51:     protected $_protectedFileExtensions = array();
 52: 
 53:     /**
 54:      * Construct
 55:      */
 56:     public function __construct()
 57:     {
 58:         $this->_initMessageTemplates();
 59:         $this->_initProtectedFileExtensions();
 60:     }
 61: 
 62:     /**
 63:      * Initialize message templates with translating
 64:      *
 65:      * @return Mage_Core_Model_File_Validator_NotProtectedExtension
 66:      */
 67:     protected function _initMessageTemplates()
 68:     {
 69:         if (!$this->_messageTemplates) {
 70:             $this->_messageTemplates = array(
 71:                 self::PROTECTED_EXTENSION => Mage::helper('core')->__('File with an extension "%value%" is protected and cannot be uploaded'),
 72:             );
 73:         }
 74:         return $this;
 75:     }
 76: 
 77:     /**
 78:      * Initialize protected file extensions
 79:      *
 80:      * @return Mage_Core_Model_File_Validator_NotProtectedExtension
 81:      */
 82:     protected function _initProtectedFileExtensions()
 83:     {
 84:         if (!$this->_protectedFileExtensions) {
 85:             /** @var $helper Mage_Core_Helper_Data */
 86:             $helper = Mage::helper('core');
 87:             $extensions = $helper->getProtectedFileExtensions();
 88:             if (is_string($extensions)) {
 89:                 $extensions = explode(',', $extensions);
 90:             }
 91:             foreach ($extensions as &$ext) {
 92:                 $ext = strtolower(trim($ext));
 93:             }
 94:             $this->_protectedFileExtensions = (array) $extensions;
 95:         }
 96:         return $this;
 97:     }
 98: 
 99: 
100:     /**
101:      * Returns true if and only if $value meets the validation requirements
102:      *
103:      * If $value fails validation, then this method returns false, and
104:      * getMessages() will return an array of messages that explain why the
105:      * validation failed.
106:      *
107:      * @param string $value         Extension of file
108:      * @return bool
109:      */
110:     public function isValid($value)
111:     {
112:         $value = strtolower(trim($value));
113:         $this->_setValue($value);
114: 
115:         if (in_array($this->_value, $this->_protectedFileExtensions)) {
116:             $this->_error(self::PROTECTED_EXTENSION, $this->_value);
117:             return false;
118:         }
119: 
120:         return true;
121:     }
122: }
123: