<?php
/**
 * This is a PHP library that handles calling reCAPTCHA.
 *
 * @copyright Copyright (c) 2015, Google Inc.
 * @link      http://www.google.com/recaptcha
 *
 * 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.
 */

namespace ReCaptcha\RequestMethod;

/**
 * Convenience wrapper around native socket and file functions to allow for
 * mocking.
 */
class Socket {

	private $handle = null;

	/**
	 * fsockopen
	 *
	 * @see http://php.net/fsockopen
	 * @param string $hostname
	 * @param int    $port
	 * @param int    $errno
	 * @param string $errstr
	 * @param float  $timeout
	 * @return resource
	 */
	public function fsockopen( $hostname, $port = -1, &$errno = 0, &$errstr = '', $timeout = null ) {
		$this->handle = fsockopen( $hostname, $port, $errno, $errstr, ( is_null( $timeout ) ? ini_get( 'default_socket_timeout' ) : $timeout ) );

		if ( $this->handle != false && $errno === 0 && $errstr === '' ) {
			return $this->handle;
		}
		return false;
	}

	/**
	 * fwrite
	 *
	 * @see http://php.net/fwrite
	 * @param string $string
	 * @param int    $length
	 * @return int | bool
	 */
	public function fwrite( $string, $length = null ) {
		return fwrite( $this->handle, $string, ( is_null( $length ) ? strlen( $string ) : $length ) );
	}

	/**
	 * fgets
	 *
	 * @see http://php.net/fgets
	 * @param int $length
	 * @return string
	 */
	public function fgets( $length = null ) {
		return fgets( $this->handle, $length );
	}

	/**
	 * feof
	 *
	 * @see http://php.net/feof
	 * @return bool
	 */
	public function feof() {
		return feof( $this->handle );
	}

	/**
	 * fclose
	 *
	 * @see http://php.net/fclose
	 * @return bool
	 */
	public function fclose() {
		return fclose( $this->handle );
	}
}
