<?php

/**
 * This file is part of LEPTON Core, released under the GNU GPL
 * Please see LICENSE and COPYING files in your package for details, specially for terms and warranties.
 * 
 * NOTICE:LEPTON CMS Package has several different licenses.
 * Please see the individual license in the header of each single file or info.php of modules and templates.
 *
 *
 * @author          LEPTON Project
 * @copyright       2010-2021 LEPTON Project
 * @link            https://lepton-cms.org
 * @license         http://www.gnu.org/licenses/gpl.html
 * @license_terms   please see LICENSE and COPYING files in your package
 *
 */
 
// include class.secure.php to protect this file and the whole CMS!
if (defined('LEPTON_PATH')) {	
	include(LEPTON_PATH.'/framework/class.secure.php'); 
} else {
	$oneback = "../";
	$root = $oneback;
	$level = 1;
	while (($level < 10) && (!file_exists($root.'/framework/class.secure.php'))) {
		$root .= $oneback;
		$level += 1;
	}
	if (file_exists($root.'/framework/class.secure.php')) { 
		include($root.'/framework/class.secure.php'); 
	} else {
		trigger_error(sprintf("[ <b>%s</b> ] Can't include class.secure.php!", $_SERVER['SCRIPT_NAME']), E_USER_ERROR);
	}
}
// end include class.secure.php

// Check if user uploaded a file
if(!isset($_FILES['userfile'])) {
	header("Location: index.php");
	exit(0);
}

// Setup admin object

$admin = new LEPTON_admin('Addons', 'languages_install');

// Include the functions file
require_once(LEPTON_PATH.'/framework/summary.functions.php');

/**
 *  Create temp string for a unique filename by using the pw-generator.
 *
 */
require_once( LEPTON_PATH."/framework/functions/function.random_string.php" );
$temp_string = random_string( AUTH_MIN_PASS_LENGTH + mt_rand(0, 4), 'pass' );

// Set temp vars
$temp_dir = LEPTON_PATH.'/temp/';
$temp_file = $temp_dir . 'language'.$temp_string;

// Check if language dir is writable
if(!is_writable(LEPTON_PATH.'/languages/')) {
	if(file_exists($temp_file)) { unlink($temp_file); } // Remove temp file
	$admin->print_error($MESSAGE['GENERIC_BAD_PERMISSIONS']);
}

// Try to upload the file to the temp dir
if(!move_uploaded_file($_FILES['userfile']['tmp_name'], $temp_file)) {
	if(file_exists($temp_file)) { unlink($temp_file); } // Remove temp file
	$admin->print_error($MESSAGE['GENERIC_CANNOT_UPLOAD']);
}

// Check if uploaded file is a valid language file (no binary file etc.)
$content = file_get_contents($temp_file);
if (strpos($content, '<?php') === false){
    $admin->print_error($MESSAGE['GENERIC_INVALID_LANGUAGE_FILE']." [1]");
}

// Remove any vars with name "language_code"
unset($language_directory);

// Include precheck files for versionCompare routine
require(LEPTON_PATH . '/framework/summary.addon_precheck.php');

// Read the temp file and look for a language code
require($temp_file);
$new_language_version=$language_version;

// Check if the file is valid
if(!isset($language_directory)) {
	if(file_exists($temp_file)) { unlink($temp_file); } // Remove temp file
	// Restore to correct language
	require(LEPTON_PATH.'/languages/'.LANGUAGE.'.php');
	$admin->print_error($MESSAGE['GENERIC_INVALID_LANGUAGE_FILE']." [2]");
}

// Set destination for language file
$language_file = LEPTON_PATH.'/languages/'.$language_directory.'.php';
$action="install";

// Move to new location
if (file_exists($language_file)) {
    require($language_file);
    if (versionCompare($language_version, $new_language_version, '>=')) {
        // delete the temp. file
        unlink($temp_file);

        // Restore to correct language
        require(LEPTON_PATH . '/languages/' . LANGUAGE . '.php');
        $admin->print_error($MESSAGE['GENERIC_ALREADY_INSTALLED']);
    }

	/**
	 *  Check for missing values.
	 *
	 */
	if( (!isset($language_license))     ||
		(!isset($language_directory))   ||
		(!isset($language_version))     ||
		(!isset($language_guid))
		) {
			require(LEPTON_PATH . '/languages/' . LANGUAGE . '.php');
			$admin->print_error( $MESSAGE["LANG_MISSING_PARTS_NOTICE"] );
		}

	$action="upgrade";
	unlink($language_file);
}

// if (!function_exists("rename_recursive_dirs")) require_once( LEPTON_PATH."/framework/functions/function.rename_recursive_dirs.php" );
// rename_recursive_dirs($temp_file, $language_file);
copy($temp_file, $language_file);
unlink($temp_file);

// Chmod the file
change_mode($language_file, 'file');

// Load language info into DB
load_language($language_file);

// Restore to correct language
require(LEPTON_PATH.'/languages/'.LANGUAGE.'.php');

// Print success message
if ($action=="install") {
    $admin->print_success($MESSAGE['GENERIC_INSTALLED']);
} else {
    $admin->print_success($MESSAGE['GENERIC_UPGRADED']);
}

// Print admin footer
$admin->print_footer();

?>