Blame Identity/Webenv/phpBB/3.0.4/includes/functions_transfer.php

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/**
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*
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* @package phpBB3
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* @version $Id: functions_transfer.php 8479 2008-03-29 00:22:48Z naderman $
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* @copyright (c) 2005 phpBB Group
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* @license http://opensource.org/licenses/gpl-license.php GNU Public License
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*
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*/
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/**
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* @ignore
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*/
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if (!defined('IN_PHPBB'))
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{
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	exit;
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}
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/**
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* Transfer class, wrapper for ftp/sftp/ssh
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* @package phpBB3
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*/
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class transfer
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{
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	var $connection;
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	var $host;
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	var $port;
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	var $username;
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	var $password;
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	var $timeout;
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	var $root_path;
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	var $tmp_path;
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	var $file_perms;
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	var $dir_perms;
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	/**
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	* Constructor - init some basic values
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	*/
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	function transfer()
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	{
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		global $phpbb_root_path;
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		$this->file_perms	= 0644;
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		$this->dir_perms	= 0777;
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		// We use the store directory as temporary path to circumvent open basedir restrictions
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		$this->tmp_path = $phpbb_root_path . 'store/';
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	}
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	/**
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	* Write file to location
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	*/
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	function write_file($destination_file = '', $contents = '')
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	{
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		global $phpbb_root_path;
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		$destination_file = $this->root_path . str_replace($phpbb_root_path, '', $destination_file);
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		// need to create a temp file and then move that temp file.
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		// ftp functions can only move files around and can't create.
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		// This means that the users will need to have access to write
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		// temporary files or have write access on a folder within phpBB
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		// like the cache folder. If the user can't do either, then
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		// he/she needs to use the fsock ftp method
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		$temp_name = tempnam($this->tmp_path, 'transfer_');
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		@unlink($temp_name);
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		$fp = @fopen($temp_name, 'w');
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		if (!$fp)
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		{
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			trigger_error('Unable to create temporary file ' . $temp_name, E_USER_ERROR);
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		}
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		@fwrite($fp, $contents);
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		@fclose($fp);
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		$result = $this->overwrite_file($temp_name, $destination_file);
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		// remove temporary file now
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		@unlink($temp_name);
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		return $result;
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	}
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	/**
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	* Moving file into location. If the destination file already exists it gets overwritten
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	*/
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	function overwrite_file($source_file, $destination_file)
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	{
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		/**
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		* @todo generally think about overwriting files in another way, by creating a temporary file and then renaming it
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		* @todo check for the destination file existance too
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		*/
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		$this->_delete($destination_file);
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		$result = $this->_put($source_file, $destination_file);
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		$this->_chmod($destination_file, $this->file_perms);
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		return $result;
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	}
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	/**
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	* Create directory structure
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	*/
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	function make_dir($dir)
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	{
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		global $phpbb_root_path;
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		$dir = str_replace($phpbb_root_path, '', $dir);
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		$dir = explode('/', $dir);
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		$dirs = '';
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		for ($i = 0, $total = sizeof($dir); $i < $total; $i++)
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		{
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			$result = true;
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			if (strpos($dir[$i], '.') === 0)
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			{
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				continue;
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			}
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			$cur_dir = $dir[$i] . '/';
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			if (!file_exists($phpbb_root_path . $dirs . $cur_dir))
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			{
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				// create the directory
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				$result = $this->_mkdir($dir[$i]);
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				$this->_chmod($dir[$i], $this->dir_perms);
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			}
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			$this->_chdir($this->root_path . $dirs . $dir[$i]);
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			$dirs .= $cur_dir;
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		}
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		$this->_chdir($this->root_path);
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		/**
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		* @todo stack result into array to make sure every path creation has been taken care of
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		*/
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		return $result;
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	}
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	/**
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	* Copy file from source location to destination location
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	*/
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	function copy_file($from_loc, $to_loc)
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	{
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		global $phpbb_root_path;
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		$from_loc = ((strpos($from_loc, $phpbb_root_path) !== 0) ? $phpbb_root_path : '') . $from_loc;
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		$to_loc = $this->root_path . str_replace($phpbb_root_path, '', $to_loc);
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		if (!file_exists($from_loc))
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		{
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			return false;
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		}
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		$result = $this->overwrite_file($from_loc, $to_loc);
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		return $result;
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	}
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	/**
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	* Remove file
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	*/
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	function delete_file($file)
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	{
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		global $phpbb_root_path;
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		$file = $this->root_path . str_replace($phpbb_root_path, '', $file);
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		return $this->_delete($file);
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	}
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	/**
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	* Remove directory
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	* @todo remove child directories?
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	*/
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	function remove_dir($dir)
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	{
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		global $phpbb_root_path;
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		$dir = $this->root_path . str_replace($phpbb_root_path, '', $dir);
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		return $this->_rmdir($dir);
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	}
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	/**
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	* Rename a file or folder
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	*/
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	function rename($old_handle, $new_handle)
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	{
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		global $phpbb_root_path;
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		$old_handle = $this->root_path . str_replace($phpbb_root_path, '', $old_handle);
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		return $this->_rename($old_handle, $new_handle);
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	}
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	/**
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	* Check if a specified file exist...
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	*/
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	function file_exists($directory, $filename)
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	{
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		global $phpbb_root_path;
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		$directory = $this->root_path . str_replace($phpbb_root_path, '', $directory);
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		$this->_chdir($directory);
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		$result = $this->_ls('');
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		if ($result !== false && is_array($result))
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		{
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			return (in_array($filename, $result)) ? true : false;
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		}
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		return false;
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	}
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	/**
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	* Open session
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	*/
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	function open_session()
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	{
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		return $this->_init();
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	}
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	/**
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	* Close current session
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	*/
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	function close_session()
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	{
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		return $this->_close();
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	}
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	/**
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	* Determine methods able to be used
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	*/
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	function methods()
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	{
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		$methods = array();
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		$disabled_functions = explode(',', @ini_get('disable_functions'));
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		if (@extension_loaded('ftp'))
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		{
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			$methods[] = 'ftp';
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		}
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		if (!in_array('fsockopen', $disabled_functions))
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		{
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			$methods[] = 'ftp_fsock';
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		}
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		return $methods;
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	}
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}
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/**
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* FTP transfer class
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* @package phpBB3
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*/
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class ftp extends transfer
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{
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	/**
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	* Standard parameters for FTP session
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	*/
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	function ftp($host, $username, $password, $root_path, $port = 21, $timeout = 10)
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	{
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		$this->host			= $host;
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		$this->port			= $port;
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		$this->username		= $username;
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		$this->password		= $password;
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		$this->timeout		= $timeout;
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		// Make sure $this->root_path is layed out the same way as the $user->page['root_script_path'] value (/ at the end)
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		$this->root_path	= str_replace('\\', '/', $this->root_path);
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		if (!empty($root_path))
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		{
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			$this->root_path = (($root_path[0] != '/' ) ? '/' : '') . $root_path . ((substr($root_path, -1, 1) == '/') ? '' : '/');
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		}
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		// Init some needed values
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		transfer::transfer();
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		return;
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	}
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	/**
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	* Requests data
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	*/
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	function data()
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	{
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		global $user;
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		return array(
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			'host'		=> 'localhost',
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			'username'	=> 'anonymous',
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			'password'	=> '',
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			'root_path'	=> $user->page['root_script_path'],
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			'port'		=> 21,
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			'timeout'	=> 10
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		);
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	}
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	/**
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	* Init FTP Session
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	* @access private
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	*/
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	function _init()
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	{
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		// connect to the server
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		$this->connection = @ftp_connect($this->host, $this->port, $this->timeout);
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		if (!$this->connection)
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		{
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			return 'ERR_CONNECTING_SERVER';
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		}
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		// attempt to turn pasv mode on
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		@ftp_pasv($this->connection, true);
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		// login to the server
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		if (!@ftp_login($this->connection, $this->username, $this->password))
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		{
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			return 'ERR_UNABLE_TO_LOGIN';
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		}
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		// change to the root directory
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		if (!$this->_chdir($this->root_path))
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		{
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			return 'ERR_CHANGING_DIRECTORY';
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		}
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		return true;
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	}
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	/**
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	* Create Directory (MKDIR)
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	* @access private
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	*/
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	function _mkdir($dir)
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	{
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		return @ftp_mkdir($this->connection, $dir);
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	}
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	/**
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	* Remove directory (RMDIR)
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	* @access private
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	*/
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	function _rmdir($dir)
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	{
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		return @ftp_rmdir($this->connection, $dir);
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	}
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	/**
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	* Rename file
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	* @access private
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	*/
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	function _rename($old_handle, $new_handle)
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	{
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		return @ftp_rename($this->connection, $old_handle, $new_handle);
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	}
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	/**
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	* Change current working directory (CHDIR)
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	* @access private
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	*/
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	function _chdir($dir = '')
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	{
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		if ($dir && $dir !== '/')
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		{
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			if (substr($dir, -1, 1) == '/')
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			{
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				$dir = substr($dir, 0, -1);
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			}
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		}
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		return @ftp_chdir($this->connection, $dir);
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	}
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	/**
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	* change file permissions (CHMOD)
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	* @access private
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	*/
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	function _chmod($file, $perms)
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	{
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		if (function_exists('ftp_chmod'))
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		{
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			$err = @ftp_chmod($this->connection, $perms, $file);
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		}
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		else
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		{
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			// Unfortunatly CHMOD is not expecting an octal value...
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			// We need to transform the integer (which was an octal) to an octal representation (to get the int) and then pass as is. ;)
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			$chmod_cmd = 'CHMOD ' . base_convert($perms, 10, 8) . ' ' . $file;
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			$err = $this->_site($chmod_cmd);
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		}
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		return $err;
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	}
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	/**
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	* Upload file to location (PUT)
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	* @access private
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	*/
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	function _put($from_file, $to_file)
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	{
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		// get the file extension
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		$file_extension = strtolower(substr(strrchr($to_file, '.'), 1));
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		// We only use the BINARY file mode to cicumvent rewrite actions from ftp server (mostly linefeeds being replaced)
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		$mode = FTP_BINARY;
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		$to_dir = dirname($to_file);
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		$to_file = basename($to_file);
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		$this->_chdir($to_dir);
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		$result = @ftp_put($this->connection, $to_file, $from_file, $mode);
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		$this->_chdir($this->root_path);
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		return $result;
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	}
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	/**
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	* Delete file (DELETE)
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	* @access private
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	*/
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	function _delete($file)
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	{
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		return @ftp_delete($this->connection, $file);
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	}
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	/**
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	* Close ftp session (CLOSE)
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	* @access private
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	*/
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	function _close()
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	{
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		if (!$this->connection)
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		{
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			return false;
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		}
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		return @ftp_quit($this->connection);
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	}
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	/**
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	* Return current working directory (CWD)
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	* At the moment not used by parent class
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	* @access private
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	*/
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	function _cwd()
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	{
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		return @ftp_pwd($this->connection);
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	}
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	/**
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	* Return list of files in a given directory (LS)
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	* @access private
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	*/
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	function _ls($dir = './')
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	{
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		return @ftp_nlist($this->connection, $dir);
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	}
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	/**
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	* FTP SITE command (ftp-only function)
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	* @access private
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	*/
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	function _site($command)
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	{
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		return @ftp_site($this->connection, $command);
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	}
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}
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/**
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* FTP fsock transfer class
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*
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* @author wGEric
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* @package phpBB3
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*/
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class ftp_fsock extends transfer
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{
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	var $data_connection;
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	/**
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	* Standard parameters for FTP session
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	*/
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	function ftp_fsock($host, $username, $password, $root_path, $port = 21, $timeout = 10)
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	{
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		$this->host			= $host;
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		$this->port			= $port;
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		$this->username		= $username;
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		$this->password		= $password;
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		$this->timeout		= $timeout;
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		// Make sure $this->root_path is layed out the same way as the $user->page['root_script_path'] value (/ at the end)
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		$this->root_path	= str_replace('\\', '/', $this->root_path);
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		if (!empty($root_path))
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		{
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			$this->root_path = (($root_path[0] != '/' ) ? '/' : '') . $root_path . ((substr($root_path, -1, 1) == '/') ? '' : '/');
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		}
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		// Init some needed values
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		transfer::transfer();
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		return;
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	}
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	/**
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	* Requests data
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	*/
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	function data()
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	{
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		global $user;
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		return array(
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			'host'		=> 'localhost',
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			'username'	=> 'anonymous',
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			'password'	=> '',
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			'root_path'	=> $user->page['root_script_path'],
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			'port'		=> 21,
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			'timeout'	=> 10
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		);
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	}
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	/**
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	* Init FTP Session
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	* @access private
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	*/
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	function _init()
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	{
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		$errno = 0;
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		$errstr = '';
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		// connect to the server
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		$this->connection = @fsockopen($this->host, $this->port, $errno, $errstr, $this->timeout);
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		if (!$this->connection || !$this->_check_command())
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		{
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			return 'ERR_CONNECTING_SERVER';
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		}
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		@stream_set_timeout($this->connection, $this->timeout);
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		// login
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		if (!$this->_send_command('USER', $this->username))
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		{
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			return 'ERR_UNABLE_TO_LOGIN';
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		}
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		if (!$this->_send_command('PASS', $this->password))
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		{
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			return 'ERR_UNABLE_TO_LOGIN';
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		}
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		// change to the root directory
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		if (!$this->_chdir($this->root_path))
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		{
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			return 'ERR_CHANGING_DIRECTORY';
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		}
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		return true;
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	}
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	/**
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	* Create Directory (MKDIR)
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	* @access private
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	*/
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	function _mkdir($dir)
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	{
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		return $this->_send_command('MKD', $dir);
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	}
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	/**
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	* Remove directory (RMDIR)
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	* @access private
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	*/
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	function _rmdir($dir)
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	{
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		return $this->_send_command('RMD', $dir);
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	}
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	/**
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	* Rename File
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	* @access private
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	*/
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	function _rename($old_handle, $new_handle)
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	{
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		$this->_send_command('RNFR', $old_handle);
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		return $this->_send_command('RNTO', $new_handle);
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	}
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	/**
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	* Change current working directory (CHDIR)
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	* @access private
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	*/
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	function _chdir($dir = '')
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	{
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		if ($dir && $dir !== '/')
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		{
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			if (substr($dir, -1, 1) == '/')
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			{
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				$dir = substr($dir, 0, -1);
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			}
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		}
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		return $this->_send_command('CWD', $dir);
ef5584
	}
ef5584
ef5584
	/**
ef5584
	* change file permissions (CHMOD)
ef5584
	* @access private
ef5584
	*/
ef5584
	function _chmod($file, $perms)
ef5584
	{
ef5584
		// Unfortunatly CHMOD is not expecting an octal value...
ef5584
		// We need to transform the integer (which was an octal) to an octal representation (to get the int) and then pass as is. ;)
ef5584
		return $this->_send_command('SITE CHMOD', base_convert($perms, 10, 8) . ' ' . $file);
ef5584
	}
ef5584
ef5584
	/**
ef5584
	* Upload file to location (PUT)
ef5584
	* @access private
ef5584
	*/
ef5584
	function _put($from_file, $to_file)
ef5584
	{
ef5584
		// We only use the BINARY file mode to cicumvent rewrite actions from ftp server (mostly linefeeds being replaced)
ef5584
		// 'I' == BINARY
ef5584
		// 'A' == ASCII
ef5584
		if (!$this->_send_command('TYPE', 'I'))
ef5584
		{
ef5584
			return false;
ef5584
		}
ef5584
ef5584
		// open the connection to send file over
ef5584
		if (!$this->_open_data_connection())
ef5584
		{
ef5584
			return false;
ef5584
		}
ef5584
ef5584
		$this->_send_command('STOR', $to_file, false);
ef5584
ef5584
		// send the file
ef5584
		$fp = @fopen($from_file, 'rb');
ef5584
		while (!@feof($fp))
ef5584
		{
ef5584
			@fwrite($this->data_connection, @fread($fp, 4096));
ef5584
		}
ef5584
		@fclose($fp);
ef5584
ef5584
		// close connection
ef5584
		$this->_close_data_connection();
ef5584
ef5584
		return $this->_check_command();
ef5584
	}
ef5584
ef5584
	/**
ef5584
	* Delete file (DELETE)
ef5584
	* @access private
ef5584
	*/
ef5584
	function _delete($file)
ef5584
	{
ef5584
		return $this->_send_command('DELE', $file);
ef5584
	}
ef5584
ef5584
	/**
ef5584
	* Close ftp session (CLOSE)
ef5584
	* @access private
ef5584
	*/
ef5584
	function _close()
ef5584
	{
ef5584
		if (!$this->connection)
ef5584
		{
ef5584
			return false;
ef5584
		}
ef5584
ef5584
		return $this->_send_command('QUIT');
ef5584
	}
ef5584
ef5584
	/**
ef5584
	* Return current working directory (CWD)
ef5584
	* At the moment not used by parent class
ef5584
	* @access private
ef5584
	*/
ef5584
	function _cwd()
ef5584
	{
ef5584
		$this->_send_command('PWD', '', false);
ef5584
		return preg_replace('#^[0-9]{3} "(.+)" .+\r\n#', '\\1', $this->_check_command(true));
ef5584
	}
ef5584
ef5584
	/**
ef5584
	* Return list of files in a given directory (LS)
ef5584
	* @access private
ef5584
	*/
ef5584
	function _ls($dir = './')
ef5584
	{
ef5584
		if (!$this->_open_data_connection())
ef5584
		{
ef5584
			return false;
ef5584
		}
ef5584
ef5584
		$this->_send_command('NLST', $dir);
ef5584
ef5584
		$list = array();
ef5584
		while (!@feof($this->data_connection))
ef5584
		{
ef5584
			$list[] = preg_replace('#[\r\n]#', '', @fgets($this->data_connection, 512));
ef5584
		}
ef5584
		$this->_close_data_connection();
ef5584
ef5584
		return $list;
ef5584
	}
ef5584
ef5584
	/**
ef5584
	* Send a command to server (FTP fsock only function)
ef5584
	* @access private
ef5584
	*/
ef5584
	function _send_command($command, $args = '', $check = true)
ef5584
	{
ef5584
		if (!empty($args))
ef5584
		{
ef5584
			$command = "$command $args";
ef5584
		}
ef5584
ef5584
		fwrite($this->connection, $command . "\r\n");
ef5584
ef5584
		if ($check === true && !$this->_check_command())
ef5584
		{
ef5584
			return false;
ef5584
		}
ef5584
ef5584
		return true;
ef5584
	}
ef5584
ef5584
	/**
ef5584
	* Opens a connection to send data (FTP fosck only function)
ef5584
	* @access private
ef5584
	*/
ef5584
	function _open_data_connection()
ef5584
	{
ef5584
		$this->_send_command('PASV', '', false);
ef5584
ef5584
		if (!$ip_port = $this->_check_command(true))
ef5584
		{
ef5584
			return false;
ef5584
		}
ef5584
ef5584
		// open the connection to start sending the file
ef5584
		if (!preg_match('#[0-9]{1,3},[0-9]{1,3},[0-9]{1,3},[0-9]{1,3},[0-9]+,[0-9]+#', $ip_port, $temp))
ef5584
		{
ef5584
			// bad ip and port
ef5584
			return false;
ef5584
		}
ef5584
ef5584
		$temp = explode(',', $temp[0]);
ef5584
		$server_ip = $temp[0] . '.' . $temp[1] . '.' . $temp[2] . '.' . $temp[3];
ef5584
		$server_port = $temp[4] * 256 + $temp[5];
ef5584
		$errno = 0;
ef5584
		$errstr = '';
ef5584
ef5584
		if (!$this->data_connection = @fsockopen($server_ip, $server_port, $errno, $errstr, $this->timeout))
ef5584
		{
ef5584
			return false;
ef5584
		}
ef5584
		@stream_set_timeout($this->data_connection, $this->timeout);
ef5584
ef5584
		return true;
ef5584
	}
ef5584
ef5584
	/**
ef5584
	* Closes a connection used to send data
ef5584
	* @access private
ef5584
	*/
ef5584
	function _close_data_connection()
ef5584
	{
ef5584
		return @fclose($this->data_connection);
ef5584
	}
ef5584
ef5584
	/**
ef5584
	* Check to make sure command was successful (FTP fsock only function)
ef5584
	* @access private
ef5584
	*/
ef5584
	function _check_command($return = false)
ef5584
	{
ef5584
		$response = '';
ef5584
ef5584
		do
ef5584
		{
ef5584
			$result = @fgets($this->connection, 512);
ef5584
			$response .= $result;
ef5584
		}
ef5584
		while (substr($response, 3, 1) != ' ');
ef5584
ef5584
		if (!preg_match('#^[123]#', $response))
ef5584
		{
ef5584
			return false;
ef5584
		}
ef5584
ef5584
		return ($return) ? $response : true;
ef5584
	}
ef5584
}
ef5584
ef5584
?>