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<?php
/**
* CodeIgniter
*
* An open source application development framework for PHP
*
* This content is released under the MIT License (MIT)
*
* Copyright (c) 2014 - 2019, 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. (https://ellislab.com/)
* @copyright Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
* @license https://opensource.org/licenses/MIT MIT License
* @link https://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 https://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; $i++)
{
// If we can't delete the item it's probably a directory,
// so we'll recursively call delete_dir()
if ( ! preg_match('#/\.\.?$#', $list[$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));
}
}