/htdocs/wp-content/plugins/duplicator/classes/utility.php

<?php

if ( ! defined( 'DUPLICATOR_VERSION' ) ) exit; // Exit if accessed directly



class DUP_Util {

	

	/**

	*  PHP_SAPI for fcgi requires a data flush of at least 256

	*  bytes every 40 seconds or else it forces a script hault

	*/

	static public function FcgiFlush() {

		echo(str_repeat(' ', 300));

		@flush();

	}



	/**

	*  returns the snapshot url

	*/

	static public  function SSDirURL() {

		 return get_site_url(null, '', is_ssl() ? 'https' : 'http') . '/' . DUPLICATOR_SSDIR_NAME . '/';

	}



	/**

	*  Runs the APC cache to pre-cache the php files

	*  returns true if all files where cached

	*/

	static public function RunAPC() {

	   if(function_exists('apc_compile_file')){

		   $file01 = @apc_compile_file(DUPLICATOR_PLUGIN_PATH . "duplicator.php");

		   return ($file01);

	   } else {

		   return false;

	   }

	}



	/**

	*  Display human readable byte sizes

	*  @param string $size		The size in bytes

	*/

	static public function ByteSize($size) {

		try {

			$units = array('B', 'KB', 'MB', 'GB', 'TB');

			for ($i = 0; $size >= 1024 && $i < 4; $i++)

				$size /= 1024;

			return round($size, 2) . $units[$i];

		} catch (Exception $e) {

			return "n/a";

		}

	}



	/**

	*  Makes path safe for any OS

	*  Paths should ALWAYS READ be "/"

	* 		uni: /home/path/file.xt

	* 		win:  D:/home/path/file.txt 

	*  @param string $path		The path to make safe

	*/

	static public function SafePath($path) {

		return str_replace("\\", "/", $path);

	}



	/** 

	 * Get current microtime as a float. Can be used for simple profiling.

	 */

	static public function GetMicrotime() {

		return microtime(true);

	}



	/** 

	 * Append the value to the string if it doesn't already exist

	 */

	static public function StringAppend($string, $value ) {

	   return $string . (substr($string, -1) == $value ? '' : $value);

	}



	/** 

	 * Return a string with the elapsed time.

	 * Order of $end and $start can be switched. 

	 */

	static public function ElapsedTime($end, $start) {

		return sprintf("%.2f sec.", abs($end - $start));

	}



	/**

	 * Get the MySQL system variables

	 * @param conn $dbh Database connection handle

	 * @return string the server variable to query for

	 */

	static public function MysqlVariableValue($variable) {

		global $wpdb;

		$row = $wpdb->get_row("SHOW VARIABLES LIKE '{$variable}'", ARRAY_N);

		return isset($row[1]) ? $row[1] : null;

	}



	/**

	 * List all of the directories of a path

	 * @path path to a system directory

	 * @return array of all directories in that path

	 */

	static public function ListDirs($path = '.') {

		$dirs = array();



		foreach (new DirectoryIterator($path) as $file) {

			if ($file->isDir() && !$file->isDot()) {

				$dirs[] = DUP_Util::SafePath($file->getPathname());

			}

		}

		return $dirs;

	}



	/** 

	 * Does the directory have content

	 */

	static public function IsDirectoryEmpty($dir) {

		if (!is_readable($dir)) return NULL; 

		return (count(scandir($dir)) == 2);

	}

	

	/** 

	 * Size of the directory recuresivly in bytes

	 */

	static public function GetDirectorySize($dir) {

		if(!file_exists($dir)) 

			return 0;

		if(is_file($dir)) 

			return filesize($dir);

		

		$size = 0;

		$list = glob($dir."/*");

		if (! empty($list)) {

			foreach($list as $file)

				$size += self::GetDirectorySize($file);

		}

		return $size;

	}

	

	

	public static function IsShellExecAvailable() {

		

		if (array_intersect(array('shell_exec', 'escapeshellarg', 'escapeshellcmd', 'extension_loaded'), array_map('trim', explode(',', @ini_get('disable_functions')))))

			return false;

		

		//Suhosin: http://www.hardened-php.net/suhosin/

		//Will cause PHP to silently fail.

		if (extension_loaded('suhosin'))

		  return false;



		// Can we issue a simple echo command?

		if (!@shell_exec('echo duplicator'))

			return false;



		return true;

	}

	

	public static function IsOSWindows() {

		if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {

			return true;

		}

		return false;

	}



	public static function GetCurrentUser() {

		$unreadable =  '(Undetectable)';

		if (@function_exists('get_current_user') && @is_callable('get_current_user')) {

			$user = @get_current_user(); 

			return strlen($user) ? $user : $unreadable;

		}

		return $unreadable;

	}

	

	/**

	*  Creates the snapshot directory if it doesn't already exisit

	*/

	static public function InitSnapshotDirectory() {

		$path_wproot	= DUP_Util::SafePath(DUPLICATOR_WPROOTPATH);

		$path_ssdir		= DUP_Util::SafePath(DUPLICATOR_SSDIR_PATH);

		$path_plugin	= DUP_Util::SafePath(DUPLICATOR_PLUGIN_PATH);



		//--------------------------------

		//CHMOD DIRECTORY ACCESS

		//wordpress root directory

		@chmod($path_wproot, 0755);



		//snapshot directory

		@mkdir($path_ssdir, 0755);

		@chmod($path_ssdir, 0755);

		

		//snapshot tmp directory

		$path_ssdir_tmp = $path_ssdir . '/tmp';

		@mkdir($path_ssdir_tmp, 0755);

		@chmod($path_ssdir_tmp, 0755);



		//plugins dir/files

		@chmod($path_plugin . 'files', 0755);



		//--------------------------------

		//FILE CREATION	

		//SSDIR: Create Index File

		$ssfile = @fopen($path_ssdir . '/index.php', 'w');

		@fwrite($ssfile, '<?php error_reporting(0);  if (stristr(php_sapi_name(), "fcgi")) { $url  =  "http://" . $_SERVER["HTTP_HOST"]; header("Location: {$url}/404.html");} else { header("HTML/1.1 404 Not Found", true, 404);} exit(); ?>');

		@fclose($ssfile);



		//SSDIR: Create token file in snapshot

		$tokenfile = @fopen($path_ssdir . '/dtoken.php', 'w');

		@fwrite($tokenfile, '<?php error_reporting(0);  if (stristr(php_sapi_name(), "fcgi")) { $url  =  "http://" . $_SERVER["HTTP_HOST"]; header("Location: {$url}/404.html");} else { header("HTML/1.1 404 Not Found", true, 404);} exit(); ?>');

		@fclose($tokenfile);



		//SSDIR: Create .htaccess

		$storage_htaccess_off = DUP_Settings::Get('storage_htaccess_off');

		if ($storage_htaccess_off) {

			@unlink($path_ssdir . '/.htaccess');

		} else {

			$htfile = @fopen($path_ssdir . '/.htaccess', 'w');

			$htoutput = "Options -Indexes" ;

			@fwrite($htfile, $htoutput);

			@fclose($htfile);

		}



		//SSDIR: Robots.txt file

		$robotfile = @fopen($path_ssdir . '/robots.txt', 'w');

		@fwrite($robotfile, "User-agent: * \nDisallow: /" . DUPLICATOR_SSDIR_NAME . '/');

		@fclose($robotfile);



		//PLUG DIR: Create token file in plugin

		$tokenfile2 = @fopen($path_plugin . 'installer/dtoken.php', 'w');

		@fwrite($tokenfile2, '<?php @error_reporting(0); @require_once("../../../../wp-admin/admin.php"); global $wp_query; $wp_query->set_404(); header("HTML/1.1 404 Not Found", true, 404); header("Status: 404 Not Found"); @include(get_template_directory () . "/404.php"); ?>');

		@fclose($tokenfile2);

	}



}

?>