<?php
/*
* 2007-2016 PrestaShop
*
* NOTICE OF LICENSE
*
* This source file is subject to the Open Software License (OSL 3.0)
* that is bundled with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://opensource.org/licenses/osl-3.0.php
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@prestashop.com so we can send you a copy immediately.
*
* DISCLAIMER
*
* Do not edit or add to this file if you wish to upgrade PrestaShop to newer
* versions in the future. If you wish to customize PrestaShop for your
* needs please refer to http://www.prestashop.com for more information.
*
*  @author PrestaShop SA <contact@prestashop.com>
*  @copyright  2007-2016 PrestaShop SA
*  @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
*  International Registered Trademark & Property of PrestaShop SA
*/

class ConfigurationTestCore
{
    public static $test_files = array(
        '/cache/smarty/compile/index.php',
        '/classes/log/index.php',
        '/classes/cache/index.php',
        '/config/index.php',
        '/tools/tar/Archive_Tar.php',
        '/tools/pear/PEAR.php',
        '/controllers/admin/AdminLoginController.php',
        '/css/index.php',
        '/download/index.php',
        '/img/404.gif',
        '/js/tools.js',
        '/js/jquery/plugins/fancybox/jquery.fancybox.js',
        '/localization/fr.xml',
        '/mails/index.php',
        '/modules/index.php',
        '/override/controllers/front/index.php',
        '/pdf/order-return.tpl',
        '/themes/default-bootstrap/css/global.css',
        '/translations/export/index.php',
        '/webservice/dispatcher.php',
        '/index.php'
    );

    /**
     * getDefaultTests return an array of tests to executes.
     * key are method name, value are parameters (false for no parameter)
     * all path are _PS_ROOT_DIR_ related
     *
     * @return array
     */
    public static function getDefaultTests()
    {
        $tests = array(
            'upload' => false,
            'cache_dir' => 'cache',
            'log_dir' => 'log',
            'img_dir' => 'img',
            'module_dir' => 'modules',
            'theme_lang_dir' => 'themes/'._THEME_NAME_.'/lang/',
            'theme_pdf_lang_dir' => 'themes/'._THEME_NAME_.'/pdf/lang/',
            'theme_cache_dir' => 'themes/'._THEME_NAME_.'/cache/',
            'translations_dir' => 'translations',
            'customizable_products_dir' => 'upload',
            'virtual_products_dir' => 'download'
        );

        if (!defined('_PS_HOST_MODE_')) {
            $tests = array_merge($tests, array(
                'system' => array(
                    'fopen', 'fclose', 'fread', 'fwrite',
                    'rename', 'file_exists', 'unlink', 'rmdir', 'mkdir',
                    'getcwd', 'chdir', 'chmod'
                ),
                'phpversion' => false,
                'gd' => false,
                'mysql_support' => false,
                'config_dir' => 'config',
                'files' => false,
                'mails_dir' => 'mails',
            ));
        }

        return $tests;
    }

    /**
     * getDefaultTestsOp return an array of tests to executes.
     * key are method name, value are parameters (false for no parameter)
     *
     * @return array
     */
    public static function getDefaultTestsOp()
    {
        return array(
            'new_phpversion' => false,
            'fopen' => false,
            'register_globals' => false,
            'gz' => false,
            'mcrypt' => false,
            'mbstring' => false,
            'magicquotes' => false,
            'dom' => false,
            'pdo_mysql' => false,
        );
    }

    /**
     * run all test defined in $tests
     *
     * @param array $tests
     * @return array results of tests
     */
    public static function check($tests)
    {
        $res = array();
        foreach ($tests as $key => $test) {
            $res[$key] = ConfigurationTest::run($key, $test);
        }
        return $res;
    }

    public static function run($ptr, $arg = 0)
    {
        if (call_user_func(array('ConfigurationTest', 'test_'.$ptr), $arg)) {
            return 'ok';
        }
        return 'fail';
    }

    public static function test_phpversion()
    {
        return version_compare(substr(phpversion(), 0, 5), '5.2.0', '>=');
    }

    public static function test_new_phpversion()
    {
        return version_compare(substr(phpversion(), 0, 5), '5.4.0', '>=');
    }

    public static function test_mysql_support()
    {
        return extension_loaded('mysql') || extension_loaded('mysqli') || extension_loaded('pdo_mysql');
    }

    public static function test_pdo_mysql()
    {
        return extension_loaded('pdo_mysql');
    }

    public static function test_magicquotes()
    {
        return !get_magic_quotes_gpc();
    }

    public static function test_upload()
    {
        return ini_get('file_uploads');
    }

    public static function test_fopen()
    {
        return ini_get('allow_url_fopen');
    }

    public static function test_system($funcs)
    {
        foreach ($funcs as $func) {
            if (!function_exists($func)) {
                return false;
            }
        }
        return true;
    }

    public static function test_gd()
    {
        return function_exists('imagecreatetruecolor');
    }

    public static function test_register_globals()
    {
        return !ini_get('register_globals');
    }

    public static function test_gz()
    {
        if (function_exists('gzencode')) {
            return @gzencode('dd') !== false;
        }
        return false;
    }

    public static function test_dir($relative_dir, $recursive = false, &$full_report = null)
    {
        $dir = rtrim(_PS_ROOT_DIR_, '\\/').DIRECTORY_SEPARATOR.trim($relative_dir, '\\/');
        if (!file_exists($dir) || !$dh = @opendir($dir)) {
            $full_report = sprintf('Directory %s does not exist or is not writable', $dir); // sprintf for future translation
            return false;
        }
        $dummy = rtrim($dir, '\\/').DIRECTORY_SEPARATOR.uniqid();
        if (@file_put_contents($dummy, 'test')) {
            @unlink($dummy);
            if (!$recursive) {
                closedir($dh);
                return true;
            }
        } elseif (!is_writable($dir)) {
            $full_report = sprintf('Directory %s is not writable', $dir); // sprintf for future translation
            return false;
        }

        if ($recursive) {
            while (($file = readdir($dh)) !== false) {
                if (is_dir($dir.DIRECTORY_SEPARATOR.$file) && $file != '.' && $file != '..' && $file != '.svn') {
                    if (!ConfigurationTest::test_dir($relative_dir.DIRECTORY_SEPARATOR.$file, $recursive, $full_report)) {
                        return false;
                    }
                }
            }
        }

        closedir($dh);
        return true;
    }

    public static function test_file($file_relative)
    {
        $file = _PS_ROOT_DIR_.DIRECTORY_SEPARATOR.$file_relative;
        return (file_exists($file) && is_writable($file));
    }

    public static function test_config_dir($dir)
    {
        return ConfigurationTest::test_dir($dir);
    }

    public static function test_sitemap($dir)
    {
        return ConfigurationTest::test_file($dir);
    }

    public static function test_root_dir($dir)
    {
        return ConfigurationTest::test_dir($dir);
    }

    public static function test_log_dir($dir)
    {
        return ConfigurationTest::test_dir($dir);
    }

    public static function test_admin_dir($dir)
    {
        return ConfigurationTest::test_dir($dir);
    }

    public static function test_img_dir($dir)
    {
        return ConfigurationTest::test_dir($dir, true);
    }

    public static function test_module_dir($dir)
    {
        return ConfigurationTest::test_dir($dir, true);
    }

    public static function test_cache_dir($dir)
    {
        return ConfigurationTest::test_dir($dir, true);
    }

    public static function test_tools_v2_dir($dir)
    {
        return ConfigurationTest::test_dir($dir);
    }

    public static function test_cache_v2_dir($dir)
    {
        return ConfigurationTest::test_dir($dir);
    }

    public static function test_download_dir($dir)
    {
        return ConfigurationTest::test_dir($dir);
    }

    public static function test_mails_dir($dir)
    {
        return ConfigurationTest::test_dir($dir, true);
    }

    public static function test_translations_dir($dir)
    {
        return ConfigurationTest::test_dir($dir, true);
    }

    public static function test_theme_lang_dir($dir)
    {
        $absoluteDir = rtrim(_PS_ROOT_DIR_, '\\/').DIRECTORY_SEPARATOR.trim($dir, '\\/');
        if (!file_exists($absoluteDir)) {
            return true;
        }
        return ConfigurationTest::test_dir($dir, true);
    }

    public static function test_theme_pdf_lang_dir($dir)
    {
        $absoluteDir = rtrim(_PS_ROOT_DIR_, '\\/').DIRECTORY_SEPARATOR.trim($dir, '\\/');
        if (!file_exists($absoluteDir)) {
            return true;
        }
        return ConfigurationTest::test_dir($dir, true);
    }

    public static function test_theme_cache_dir($dir)
    {
        $absoluteDir = rtrim(_PS_ROOT_DIR_, '\\/').DIRECTORY_SEPARATOR.trim($dir, '\\/');
        if (!file_exists($absoluteDir)) {
            return true;
        }
        return ConfigurationTest::test_dir($dir, true);
    }

    public static function test_customizable_products_dir($dir)
    {
        return ConfigurationTest::test_dir($dir);
    }

    public static function test_virtual_products_dir($dir)
    {
        return ConfigurationTest::test_dir($dir);
    }

    public static function test_mbstring()
    {
        return function_exists('mb_strtolower');
    }

    public static function test_mcrypt()
    {
        return function_exists('mcrypt_encrypt');
    }

    public static function test_sessions()
    {
        if (!$path = @ini_get('session.save_path')) {
            return true;
        }

        return is_writable($path);
    }
    public static function test_dom()
    {
        return extension_loaded('Dom');
    }

    public static function test_files($full = false)
    {
        $return = array();
        foreach (ConfigurationTest::$test_files as $file) {
            if (!file_exists(rtrim(_PS_ROOT_DIR_, DIRECTORY_SEPARATOR).str_replace('/', DIRECTORY_SEPARATOR, $file))) {
                if ($full) {
                    array_push($return, $file);
                } else {
                    return false;
                }
            }
        }

        if ($full) {
            return $return;
        }
        return true;
    }
}
