ci-bonfire / Sprint

system/libraries/Ftp.php

<?php

For compatibility and reusability of your code, PSR1 recommends that a file should introduce either new symbols (like classes, functions, etc.) or have side-effects (like outputting something, or including other files), but not both at the same time. The first symbol is defined on line 49 and the first side effect is on line 38.

/**
 * CodeIgniter
 *
 * An open source application development framework for PHP
 *
 * This content is released under the MIT License (MIT)
 *
 * Copyright (c) 2014 - 2015, British Columbia Institute of Technology
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 * @package	CodeIgniter
 * @author	EllisLab Dev Team
 * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (http://ellislab.com/)
 * @copyright	Copyright (c) 2014 - 2015, British Columbia Institute of Technology (http://bcit.ca/)
 * @license	http://opensource.org/licenses/MIT	MIT License
 * @link	http://codeigniter.com
 * @since	Version 1.0.0
 * @filesource
 */
defined('BASEPATH') OR exit('No direct script access allowed');

/**
 * FTP Class
 *
 * @package		CodeIgniter
 * @subpackage	Libraries
 * @category	Libraries
 * @author		EllisLab Dev Team
 * @link		http://codeigniter.com/user_guide/libraries/ftp.html
 */
class CI_FTP {

	/**
	 * FTP Server hostname
	 *
	 * @var	string
	 */
	public $hostname = '';

	/**
	 * FTP Username
	 *
	 * @var	string
	 */
	public $username = '';

	/**
	 * FTP Password
	 *
	 * @var	string
	 */
	public $password = '';

	/**
	 * FTP Server port
	 *
	 * @var	int
	 */
	public $port = 21;

	/**
	 * Passive mode flag
	 *
	 * @var	bool
	 */
	public $passive = TRUE;

	/**
	 * Debug flag
	 *
	 * Specifies whether to display error messages.
	 *
	 * @var	bool
	 */
	public $debug = FALSE;

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

	/**
	 * Connection ID
	 *
	 * @var	resource
	 */
	protected $conn_id;

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

	/**
	 * Constructor
	 *
	 * @param	array	$config
	 * @return	void
	 */
	public function __construct($config = array())
	{
		empty($config) OR $this->initialize($config);
		log_message('info', 'FTP Class Initialized');
	}

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

	/**
	 * Initialize preferences
	 *
	 * @param	array	$config
	 * @return	void
	 */
	public function initialize($config = array())
	{
		foreach ($config as $key => $val)
		{
			if (isset($this->$key))
			{
				$this->$key = $val;
			}
		}

		// Prep the hostname
		$this->hostname = preg_replace('|.+?://|', '', $this->hostname);
	}

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

	/**
	 * FTP Connect
	 *
	 * @param	array	 $config	Connection values
	 * @return	bool
	 */
	public function connect($config = array())
	{
		if (count($config) > 0)
		{
			$this->initialize($config);
		}

		if (FALSE === ($this->conn_id = @ftp_connect($this->hostname, $this->port)))
		{
			if ($this->debug === TRUE)
			{
				$this->_error('ftp_unable_to_connect');
			}

			return FALSE;
		}

		if ( ! $this->_login())
		{
			if ($this->debug === TRUE)
			{
				$this->_error('ftp_unable_to_login');
			}

			return FALSE;
		}

		// Set passive mode if needed
		if ($this->passive === TRUE)
		{
			ftp_pasv($this->conn_id, TRUE);
		}

		return TRUE;
	}

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

	/**
	 * FTP Login
	 *
	 * @return	bool
	 */
	protected function _login()
	{
		return @ftp_login($this->conn_id, $this->username, $this->password);
	}

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

	/**
	 * Validates the connection ID
	 *
	 * @return	bool
	 */
	protected function _is_conn()
	{
		if ( ! is_resource($this->conn_id))
		{
			if ($this->debug === TRUE)
			{
				$this->_error('ftp_no_connection');
			}

			return FALSE;
		}

		return TRUE;
	}

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

	/**
	 * Change directory
	 *
	 * The second parameter lets us momentarily turn off debugging so that
	 * this function can be used to test for the existence of a folder
	 * without throwing an error. There's no FTP equivalent to is_dir()
	 * so we do it by trying to change to a particular directory.
	 * Internally, this parameter is only used by the "mirror" function below.
	 *
	 * @param	string	$path
	 * @param	bool	$suppress_debug
	 * @return	bool
	 */
	public function changedir($path, $suppress_debug = FALSE)
	{
		if ( ! $this->_is_conn())
		{
			return FALSE;
		}

		$result = @ftp_chdir($this->conn_id, $path);

		if ($result === FALSE)
		{
			if ($this->debug === TRUE && $suppress_debug === FALSE)
			{
				$this->_error('ftp_unable_to_changedir');
			}

			return FALSE;
		}

		return TRUE;
	}

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

	/**
	 * Create a directory
	 *
	 * @param	string	$path
	 * @param	int	$permissions
	 * @return	bool
	 */
	public function mkdir($path, $permissions = NULL)
	{
		if ($path === '' OR ! $this->_is_conn())
		{
			return FALSE;
		}

		$result = @ftp_mkdir($this->conn_id, $path);

		if ($result === FALSE)
		{
			if ($this->debug === TRUE)
			{
				$this->_error('ftp_unable_to_mkdir');
			}

			return FALSE;
		}

		// Set file permissions if needed
		if ($permissions !== NULL)
		{
			$this->chmod($path, (int) $permissions);
		}

		return TRUE;
	}

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

	/**
	 * Upload a file to the server
	 *
	 * @param	string	$locpath
	 * @param	string	$rempath
	 * @param	string	$mode
	 * @param	int	$permissions
	 * @return	bool
	 */
	public function upload($locpath, $rempath, $mode = 'auto', $permissions = NULL)
	{
		if ( ! $this->_is_conn())
		{
			return FALSE;
		}

		if ( ! file_exists($locpath))
		{
			$this->_error('ftp_no_source_file');
			return FALSE;
		}

		// Set the mode if not specified
		if ($mode === 'auto')
		{
			// Get the file extension so we can set the upload type
			$ext = $this->_getext($locpath);
			$mode = $this->_settype($ext);
		}

		$mode = ($mode === 'ascii') ? FTP_ASCII : FTP_BINARY;

		$result = @ftp_put($this->conn_id, $rempath, $locpath, $mode);

		if ($result === FALSE)
		{
			if ($this->debug === TRUE)
			{
				$this->_error('ftp_unable_to_upload');
			}

			return FALSE;
		}

		// Set file permissions if needed
		if ($permissions !== NULL)
		{
			$this->chmod($rempath, (int) $permissions);
		}

		return TRUE;
	}

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

	/**
	 * Download a file from a remote server to the local server
	 *
	 * @param	string	$rempath
	 * @param	string	$locpath
	 * @param	string	$mode
	 * @return	bool
	 */
	public function download($rempath, $locpath, $mode = 'auto')
	{
		if ( ! $this->_is_conn())
		{
			return FALSE;
		}

		// Set the mode if not specified
		if ($mode === 'auto')
		{
			// Get the file extension so we can set the upload type
			$ext = $this->_getext($rempath);
			$mode = $this->_settype($ext);
		}

		$mode = ($mode === 'ascii') ? FTP_ASCII : FTP_BINARY;

		$result = @ftp_get($this->conn_id, $locpath, $rempath, $mode);

		if ($result === FALSE)
		{
			if ($this->debug === TRUE)
			{
				$this->_error('ftp_unable_to_download');
			}

			return FALSE;
		}

		return TRUE;
	}

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

	/**
	 * Rename (or move) a file
	 *
	 * @param	string	$old_file
	 * @param	string	$new_file
	 * @param	bool	$move
	 * @return	bool
	 */
	public function rename($old_file, $new_file, $move = FALSE)
	{
		if ( ! $this->_is_conn())
		{
			return FALSE;
		}

		$result = @ftp_rename($this->conn_id, $old_file, $new_file);

		if ($result === FALSE)
		{
			if ($this->debug === TRUE)
			{
				$this->_error('ftp_unable_to_'.($move === FALSE ? 'rename' : 'move'));
			}

			return FALSE;
		}

		return TRUE;
	}

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

	/**
	 * Move a file
	 *
	 * @param	string	$old_file
	 * @param	string	$new_file
	 * @return	bool
	 */
	public function move($old_file, $new_file)
	{
		return $this->rename($old_file, $new_file, TRUE);
	}

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

	/**
	 * Rename (or move) a file
	 *
	 * @param	string	$filepath
	 * @return	bool
	 */
	public function delete_file($filepath)
	{
		if ( ! $this->_is_conn())
		{
			return FALSE;
		}

		$result = @ftp_delete($this->conn_id, $filepath);

		if ($result === FALSE)
		{
			if ($this->debug === TRUE)
			{
				$this->_error('ftp_unable_to_delete');
			}

			return FALSE;
		}

		return TRUE;
	}

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

	/**
	 * Delete a folder and recursively delete everything (including sub-folders)
	 * contained within it.
	 *
	 * @param	string	$filepath
	 * @return	bool
	 */
	public function delete_dir($filepath)
	{
		if ( ! $this->_is_conn())
		{
			return FALSE;
		}

		// Add a trailing slash to the file path if needed
		$filepath = preg_replace('/(.+?)\/*$/', '\\1/', $filepath);

		$list = $this->list_files($filepath);
		if ( ! empty($list))
		{
			for ($i = 0, $c = count($list); $i < $c; $i++)
			{
				// If we can't delete the item it's probaly a directory,
				// so we'll recursively call delete_dir()
				if ( ! preg_match('#/\.\.?$#', $list[$i]) && ! @ftp_delete($this->conn_id, $list[$i]))
				{
					$this->delete_dir($filepath.$list[$i]);
				}
			}
		}

		if (@ftp_rmdir($this->conn_id, $filepath) === FALSE)
		{
			if ($this->debug === TRUE)
			{
				$this->_error('ftp_unable_to_delete');
			}

			return FALSE;
		}

		return TRUE;
	}

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

	/**
	 * Set file permissions
	 *
	 * @param	string	$path	File path
	 * @param	int	$perm	Permissions
	 * @return	bool
	 */
	public function chmod($path, $perm)
	{
		if ( ! $this->_is_conn())
		{
			return FALSE;
		}

		if (@ftp_chmod($this->conn_id, $perm, $path) === FALSE)
		{
			if ($this->debug === TRUE)
			{
				$this->_error('ftp_unable_to_chmod');
			}

			return FALSE;
		}

		return TRUE;
	}

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

	/**
	 * FTP List files in the specified directory
	 *
	 * @param	string	$path
	 * @return	array
	 */
	public function list_files($path = '.')
	{
		return $this->_is_conn()
			? ftp_nlist($this->conn_id, $path)
			: FALSE;
	}

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

	/**
	 * Read a directory and recreate it remotely
	 *
	 * This function recursively reads a folder and everything it contains
	 * (including sub-folders) and creates a mirror via FTP based on it.
	 * Whatever the directory structure of the original file path will be
	 * recreated on the server.
	 *
	 * @param	string	$locpath	Path to source with trailing slash
	 * @param	string	$rempath	Path to destination - include the base folder with trailing slash
	 * @return	bool
	 */
	public function mirror($locpath, $rempath)
	{
		if ( ! $this->_is_conn())
		{
			return FALSE;
		}

		// Open the local file path
		if ($fp = @opendir($locpath))
		{
			// Attempt to open the remote file path and try to create it, if it doesn't exist
			if ( ! $this->changedir($rempath, TRUE) && ( ! $this->mkdir($rempath) OR ! $this->changedir($rempath)))
			{
				return FALSE;
			}

			// Recursively read the local directory
			while (FALSE !== ($file = readdir($fp)))
			{
				if (is_dir($locpath.$file) && $file[0] !== '.')
				{
					$this->mirror($locpath.$file.'/', $rempath.$file.'/');
				}
				elseif ($file[0] !== '.')
				{
					// Get the file extension so we can se the upload type
					$ext = $this->_getext($file);
					$mode = $this->_settype($ext);

					$this->upload($locpath.$file, $rempath.$file, $mode);
				}
			}

			return TRUE;
		}

		return FALSE;
	}

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

	/**
	 * Extract the file extension
	 *
	 * @param	string	$filename
	 * @return	string
	 */
	protected function _getext($filename)
	{
		return (($dot = strrpos($filename, '.')) === FALSE)
			? 'txt'
			: substr($filename, $dot + 1);
	}

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

	/**
	 * Set the upload type
	 *
	 * @param	string	$ext	Filename extension
	 * @return	string
	 */
	protected function _settype($ext)
	{
		return in_array($ext, array('txt', 'text', 'php', 'phps', 'php4', 'js', 'css', 'htm', 'html', 'phtml', 'shtml', 'log', 'xml'), TRUE)
			? 'ascii'
			: 'binary';
	}

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

	/**
	 * Close the connection
	 *
	 * @return	bool
	 */
	public function close()
	{
		return $this->_is_conn()
			? @ftp_close($this->conn_id)
			: FALSE;
	}

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

	/**
	 * Display error message
	 *
	 * @param	string	$line
	 * @return	void
	 */
	protected function _error($line)
	{
		$CI =& get_instance();
		$CI->lang->load('ftp');
		show_error($CI->lang->line($line));
	}

}