WP_Filesystem_SSH2

47class WP_Filesystem_SSH2 extends WP_Filesystem_Base {48 49	/**50	 * @since 2.7.051	 * @var resource|false52	 */53	public $link = false;54 55	/**56	 * @since 2.7.057	 * @var resource|false58	 */59	public $sftp_link;60 61	/**62	 * @since 2.7.063	 * @var bool64	 */65	public $keys = false;66 67	/**68	 * @since 7.1.069	 * @var array70	 * @phpstan-var Options71	 */72	public $options;73 74	/**75	 * Constructor.76	 *77	 * @since 2.7.078	 *79	 * @param array $opt {80	 *     Array of connection options.81	 *82	 *     @type string $hostname    Required. SSH server hostname.83	 *     @type string $username    Required. SSH username.84	 *     @type int    $port        Optional. SSH server port. Default 22.85	 *     @type string $password    Optional. SSH password. May be empty when using keys.86	 *     @type string $public_key  Optional. Path to public key file for publickey authentication.87	 *     @type string $private_key Optional. Path to private key file for publickey authentication.88	 * }89	 * @phpstan-param array{90	 *     hostname: non-empty-string,91	 *     username: non-empty-string,92	 *     port?: non-negative-int,93	 *     password?: string,94	 *     public_key?: non-empty-string,95	 *     private_key?: non-empty-string,96	 * }|null $opt97	 */98	public function __construct( $opt = null ) {99		$this->method  = 'ssh2';100		$this->errors  = new WP_Error();101		$this->options = array(102			'port'     => 22,103			'hostname' => '',104			'username' => '',105			'password' => null,106		);107 108		// Check if possible to use ssh2 functions.109		if ( ! extension_loaded( 'ssh2' ) ) {110			$this->errors->add( 'no_ssh2_ext', __( 'The ssh2 PHP extension is not available' ) );111			return;112		}113 114		if ( ! is_array( $opt ) ) {115			$opt = array();116		}117 118		// Set defaults:119		if ( ! empty( $opt['port'] ) ) {120			$this->options['port'] = $opt['port'];121		}122 123		if ( empty( $opt['hostname'] ) ) {124			$this->errors->add( 'empty_hostname', __( 'SSH2 hostname is required' ) );125		} else {126			$this->options['hostname'] = $opt['hostname'];