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<?php
/**
* Ftp Destination Connect to Service
*
* @since 3.5.0
* @package Inpsyde\BackWPup
*/
/**
* Class BackWPup_Destination_Ftp_Connect
*
* @since 3.5.0
* @package Inpsyde\BackWPup
*/
class BackWPup_Destination_Ftp_Connect implements BackWPup_Destination_Connect_Interface {
/**
* Host
*
* @since 3.5.0
*
* @var string The host to connect
*/
private $host;
/**
* User
*
* @since 3.5.0
*
* @var string The user name
*/
private $user;
/**
* Pass
*
* @since 3.5.0
*
* @var string The user password
*/
private $pass;
/**
* Port
*
* @since 3.5.0
*
* @var int The port where the resource is listen for
*/
private $port;
/**
* Connection timeout
*
* @since 3.5.0
*
* @see ftp_connect()
*
* @var int The connectin timeout
*/
private $timeout;
/**
* Use ssl
*
* @since 3.5.0
*
* @var bool To use ssl or not
*/
private $use_ssl;
/**
* Passive
*
* @since 3.5.0
*
* @var bool True to set passive mode, false otherwise
*/
private $passive;
/**
* The Resource or Stream to the service
*
* @since 3.5.0
*
* @var mixed Depending on the type of the connection
*/
private $resource;
/**
* BackWPup_Destination_Ftp_Connect constructor
*
* @since 3.5.0
*
* @param string $host The host to connect.
* @param string $user The user name for host.
* @param string $pass The password for host.
* @param int $port The port in which the service is listen for.
* @param int $timeout The connection timeout.
* @param bool $use_ssl To connect over ssl.
* @param bool $passive Connetion should be passive or not.
*/
public function __construct( $host, $user, $pass, $port, $timeout, $use_ssl, $passive ) {
if ( ! is_string( $host ) || '' === $host ) {
throw new \InvalidArgumentException( 'Invalid HOST value. The host must be a valid string.' );
}
if ( ! is_string( $user ) || '' === $user ) {
throw new \InvalidArgumentException( 'Invalid USER value. The user must be a valid username string.' );
}
if ( ! is_string( $pass ) || '' === $pass ) {
throw new \InvalidArgumentException( 'Invalid PASSWORD value. The user must be a valid password string.' );
}
$this->host = $host;
$this->user = $user;
$this->pass = $pass;
$this->port = $port ?: 21;
$this->timeout = $timeout ?: 90;
$this->use_ssl = function_exists( 'ftp_ssl_connect' ) && $use_ssl;
$this->passive = (bool) $passive;
$this->resource = null;
}
/**
* @inheritdoc
*/
public function connect() {
// Don't execute the connection twice.
if ( $this->resource ) {
return $this;
}
if ( ! function_exists( 'ftp_connect' ) ) {
throw new \BackWPup_Destination_Connect_Exception(
'Function ftp_connect does not exists. No way to connect to the server.'
);
}
// Default connection type.
$resource = ftp_connect( $this->host, $this->port, $this->timeout );
// Can be connected over ssl?
if ( $this->use_ssl ) {
$resource = ftp_ssl_connect( $this->host, $this->port, $this->timeout );
}
if ( ! $resource ) {
throw new \BackWPup_Destination_Connect_Exception(
'Something went wrong during FTP connection. Seems not possible to connect to the service.'
);
}
$this->resource = $resource;
if ( ! $this->login() ) {
throw new BackWPup_Destination_Connect_Exception(
'Something went wrong during FTP connection. Seems not possible to connect to the service.'
);
}
ftp_pasv( $this->resource, $this->passive );
return $this;
}
/**
* @inheritdoc
*/
public function resource() {
return $this->resource;
}
/**
* Get the FTP URL
*
* @param string $path The path to the FTP file
*
* @return string The URL to the FTP server.
*/
public function getURL( $path = null ) {
if ( $path !== null && substr( $path, 0, 1 ) != '/' ) {
$path = '/' . $path;
}
return ( $this->use_ssl ? 'ftps://' : 'ftp://' ) .
rawurlencode( $this->user ) . ':' . rawurlencode( $this->pass ) .
'@' . rawurlencode( $this->host ) . ':' . intval( $this->port ) . $path;
}
/**
* Login
*
* Perform a login to the service.
*
* @throws BackWPup_Destination_Connect_Exception In case isn't possible to login.
*
* @since 3.5.0
*
* @return bool True if was able to login, false otherwise.
*/
private function login() {
$response = false;
if ( ftp_login( $this->resource, $this->user, $this->pass ) ) {
$response = true;
}
if ( ! $response ) {
ftp_raw( $this->resource, 'USER ' . $this->user );
$response = ftp_raw( $this->resource, 'PASS ' . $this->pass );
}
// Since the ftp_raw returns an array, we check for false value.
if ( is_array( $response ) && substr( trim( $response[0] ), 0, 3 ) > 400 ) {
$response = false;
}
return $response;
}
}