WP_Filesystem_SSH2

36class WP_Filesystem_SSH2 extends WP_Filesystem_Base {37 38	/**39	 * @since 2.7.040	 * @var resource41	 */42	public $link = false;43 44	/**45	 * @since 2.7.046	 * @var resource47	 */48	public $sftp_link;49 50	/**51	 * @since 2.7.052	 * @var bool53	 */54	public $keys = false;55 56	/**57	 * Constructor.58	 *59	 * @since 2.7.060	 *61	 * @param array $opt62	 */63	public function __construct( $opt = '' ) {64		$this->method = 'ssh2';65		$this->errors = new WP_Error();66 67		// Check if possible to use ssh2 functions.68		if ( ! extension_loaded( 'ssh2' ) ) {69			$this->errors->add( 'no_ssh2_ext', __( 'The ssh2 PHP extension is not available' ) );70			return;71		}72 73		// Set defaults:74		if ( empty( $opt['port'] ) ) {75			$this->options['port'] = 22;76		} else {77			$this->options['port'] = $opt['port'];78		}79 80		if ( empty( $opt['hostname'] ) ) {81			$this->errors->add( 'empty_hostname', __( 'SSH2 hostname is required' ) );82		} else {83			$this->options['hostname'] = $opt['hostname'];84		}85 86		// Check if the options provided are OK.87		if ( ! empty( $opt['public_key'] ) && ! empty( $opt['private_key'] ) ) {88			$this->options['public_key']  = $opt['public_key'];89			$this->options['private_key'] = $opt['private_key'];90 91			$this->options['hostkey'] = array( 'hostkey' => 'ssh-rsa,ssh-ed25519' );92 93			$this->keys = true;94		} elseif ( empty( $opt['username'] ) ) {95			$this->errors->add( 'empty_username', __( 'SSH2 username is required' ) );96		}97 98		if ( ! empty( $opt['username'] ) ) {99			$this->options['username'] = $opt['username'];100		}101 102		if ( empty( $opt['password'] ) ) {103			// Password can be blank if we are using keys.104			if ( ! $this->keys ) {105				$this->errors->add( 'empty_password', __( 'SSH2 password is required' ) );106			} else {107				$this->options['password'] = null;108			}109		} else {110			$this->options['password'] = $opt['password'];111		}112	}113 114	/**115	 * Connects filesystem.