<?php

/**

 * WP_HTTP_IXR_Client

 *

 * @package WordPress

 * @since 3.1.0

 */

class WP_HTTP_IXR_Client extends IXR_Client {

	public $scheme;

	/**

	 * @var IXR_Error

	 */

	public $error;

	/**

	 * @param string       $server

	 * @param string|false $path

	 * @param int|false    $port

	 * @param int          $timeout

	 */

	public function __construct( $server, $path = false, $port = false, $timeout = 15 ) {

		if ( ! $path ) {

			// Assume we have been given a URL instead.

			$bits         = parse_url( $server );

			$this->scheme = $bits['scheme'];

			$this->server = $bits['host'];

			$this->port   = isset( $bits['port'] ) ? $bits['port'] : $port;

			$this->path   = ! empty( $bits['path'] ) ? $bits['path'] : '/';

			// Make absolutely sure we have a path.

			if ( ! $this->path ) {

				$this->path = '/';

			}

			if ( ! empty( $bits['query'] ) ) {

				$this->path .= '?' . $bits['query'];

			}

		} else {

			$this->scheme = 'http';

			$this->server = $server;

			$this->path   = $path;

			$this->port   = $port;

		}

		$this->useragent = 'The Incutio XML-RPC PHP Library';

		$this->timeout   = $timeout;

	}

	/**

	 * @since 3.1.0

	 * @since 5.5.0 Formalized the existing `...$args` parameter by adding it

	 *              to the function signature.

	 *

	 * @return bool

	 */

	public function query( ...$args ) {

		$method  = array_shift( $args );

		$request = new IXR_Request( $method, $args );

		$xml     = $request->getXml();

		$port = $this->port ? ":$this->port" : '';

		$url  = $this->scheme . '://' . $this->server . $port . $this->path;

		$args = array(

			'headers'    => array( 'Content-Type' => 'text/xml' ),

			'user-agent' => $this->useragent,

			'body'       => $xml,

		);

		// Merge Custom headers ala #8145.

		foreach ( $this->headers as $header => $value ) {

			$args['headers'][ $header ] = $value;

		}

		/**

		 * Filters the headers collection to be sent to the XML-RPC server.

		 *

		 * @since 4.4.0

		 *

		 * @param string[] $headers Associative array of headers to be sent.

		 */

		$args['headers'] = apply_filters( 'wp_http_ixr_client_headers', $args['headers'] );

		if ( false !== $this->timeout ) {

			$args['timeout'] = $this->timeout;

		}

		// Now send the request.

		if ( $this->debug ) {

			echo '<pre class="ixr_request">' . htmlspecialchars( $xml ) . "\n</pre>\n\n";

		}

		$response = wp_remote_post( $url, $args );

		if ( is_wp_error( $response ) ) {

			$errno       = $response->get_error_code();

			$errorstr    = $response->get_error_message();

			$this->error = new IXR_Error( -32300, "transport error: $errno $errorstr" );

			return false;

		}

		if ( 200 !== wp_remote_retrieve_response_code( $response ) ) {

			$this->error = new IXR_Error( -32301, 'transport error - HTTP status code was not 200 (' . wp_remote_retrieve_response_code( $response ) . ')' );

			return false;

		}

		if ( $this->debug ) {

			echo '<pre class="ixr_response">' . htmlspecialchars( wp_remote_retrieve_body( $response ) ) . "\n</pre>\n\n";

		}

		// Now parse what we've got back.

		$this->message = new IXR_Message( wp_remote_retrieve_body( $response ) );

		if ( ! $this->message->parse() ) {

			// XML error.

			$this->error = new IXR_Error( -32700, 'parse error. not well formed' );

			return false;

		}

		// Is the message a fault?

		if ( 'fault' === $this->message->messageType ) {

			$this->error = new IXR_Error( $this->message->faultCode, $this->message->faultString );

			return false;

		}

		// Message must be OK.

		return true;

	}

}