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_Install
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:  * Environment installer
29:  *
30:  * @category   Mage
31:  * @package    Mage_Install
32:  * @author      Magento Core Team <core@magentocommerce.com>
33:  */
34: class Mage_Install_Model_Installer_Env extends Mage_Install_Model_Installer_Abstract
35: {
36:     public function __construct() {}
37: 
38:     public function install()
39:     {
40:         if (!$this->_checkPhpExtensions()) {
41:             throw new Exception();
42:         }
43:         return $this;
44:     }
45: 
46:     protected function _checkPhpExtensions()
47:     {
48:         $res = true;
49:         $config = Mage::getSingleton('install/config')->getExtensionsForCheck();
50:         foreach ($config as $extension => $info) {
51:             if (!empty($info) && is_array($info)) {
52:                 $res = $this->_checkExtension($info) && $res;
53:             }
54:             else {
55:                 $res = $this->_checkExtension($extension) && $res;
56:             }
57:         }
58:         return $res;
59:     }
60: 
61:     protected function _checkExtension($extension)
62:     {
63:         if (is_array($extension)) {
64:             $oneLoaded = false;
65:             foreach ($extension as $item) {
66:                 if (extension_loaded($item)) {
67:                     $oneLoaded = true;
68:                 }
69:             }
70: 
71:             if (!$oneLoaded) {
72:                 Mage::getSingleton('install/session')->addError(
73:                     Mage::helper('install')->__('One of PHP Extensions "%s" must be loaded.', implode(',', $extension))
74:                 );
75:                 return false;
76:             }
77:         }
78:         elseif (!extension_loaded($extension)) {
79:             Mage::getSingleton('install/session')->addError(
80:                 Mage::helper('install')->__('PHP extension "%s" must be loaded.', $extension)
81:             );
82:             return false;
83:         }
84:         else {
85:             /*Mage::getSingleton('install/session')->addError(
86:                 Mage::helper('install')->__("PHP Extension '%s' loaded", $extension)
87:             );*/
88:         }
89:         return true;
90:     }
91: }
92: