1<?php
  2/**
  3 * Feed API: WP_SimplePie_File class
  4 *
  5 * @package WordPress
  6 * @subpackage Feed
  7 * @since 4.7.0
  8 */
  9
 10/**
 11 * Core class for fetching remote files and reading local files with SimplePie.
 12 *
 13 * This uses Core's HTTP API to make requests, which gives plugins the ability
 14 * to hook into the process.
 15 *
 16 * @since 2.8.0
 17 */
 18#[AllowDynamicProperties]
 19class WP_SimplePie_File extends SimplePie\File {
 20
 21	/**
 22	 * Timeout.
 23	 *
 24	 * @var int How long the connection should stay open in seconds.
 25	 */
 26	public $timeout = 10;
 27
 28	/**
 29	 * Constructor.
 30	 *
 31	 * @since 2.8.0
 32	 * @since 3.2.0 Updated to use a PHP5 constructor.
 33	 * @since 5.6.1 Multiple headers are concatenated into a comma-separated string,
 34	 *              rather than remaining an array.
 35	 *
 36	 * @param string       $url             Remote file URL.
 37	 * @param int          $timeout         Optional. How long the connection should stay open in seconds.
 38	 *                                      Default 10.
 39	 * @param int          $redirects       Optional. The number of allowed redirects. Default 5.
 40	 * @param string|array $headers         Optional. Array or string of headers to send with the request.
 41	 *                                      Default null.
 42	 * @param string       $useragent       Optional. User-agent value sent. Default null.
 43	 * @param bool         $force_fsockopen Optional. Whether to force opening internet or unix domain socket
 44	 *                                      connection or not. Default false.
 45	 */
 46	public function __construct( $url, $timeout = 10, $redirects = 5, $headers = null, $useragent = null, $force_fsockopen = false ) {
 47		$this->url       = $url;
 48		$this->timeout   = $timeout;
 49		$this->redirects = $redirects;
 50		$this->headers   = $headers;
 51		$this->useragent = $useragent;
 52
 53		$this->method = SimplePie\SimplePie::FILE_SOURCE_REMOTE;
 54
 55		if ( preg_match( '/^http(s)?:\/\//i', $url ) ) {
 56			$args = array(
 57				'timeout'     => $this->timeout,
 58				'redirection' => $this->redirects,
 59			);
 60
 61			if ( ! empty( $this->headers ) ) {
 62				$args['headers'] = $this->headers;
 63			}
 64
 65			if ( SimplePie\Misc::get_default_useragent() !== $this->useragent ) { // Use default WP user agent unless custom has been specified.
 66				$args['user-agent'] = $this->useragent;
 67			}
 68
 69			$res = wp_safe_remote_request( $url, $args );
 70
 71			if ( is_wp_error( $res ) ) {
 72				$this->error   = 'WP HTTP Error: ' . $res->get_error_message();
 73				$this->success = false;
 74
 75			} else {
 76				$this->headers = wp_remote_retrieve_headers( $res );
 77
 78				if ( $this->headers instanceof \WpOrg\Requests\Utility\CaseInsensitiveDictionary ) {
 79					$this->headers = $this->headers->getAll();
 80				}
 81
 82				/*
 83				 * SimplePie expects multiple headers to be stored as a comma-separated string,
 84				 * but `wp_remote_retrieve_headers()` returns them as an array, so they need
 85				 * to be converted.
 86				 *
 87				 * The only exception to that is the `content-type` header, which should ignore
 88				 * any previous values and only use the last one.
 89				 *
 90				 * @see SimplePie\HTTP\Parser::new_line().
 91				 */
 92				foreach ( $this->headers as $name => $value ) {
 93					if ( ! is_array( $value ) ) {
 94						continue;
 95					}
 96
 97					if ( 'content-type' === $name ) {
 98						$this->headers[ $name ] = array_pop( $value );
 99					} else {
100						$this->headers[ $name ] = implode( ', ', $value );
101					}
102				}
103
104				$this->body        = wp_remote_retrieve_body( $res );
105				$this->status_code = wp_remote_retrieve_response_code( $res );
106			}
107		} else {
108			$this->error   = '';
109			$this->success = false;
110		}
111	}
112}
113