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class-wp-simplepie-file.php (3259B)

      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  * @see SimplePie_File
     19  */
     20 class WP_SimplePie_File extends SimplePie_File {
     21 
     22 	/**
     23 	 * Constructor.
     24 	 *
     25 	 * @since 2.8.0
     26 	 * @since 3.2.0 Updated to use a PHP5 constructor.
     27 	 * @since 5.6.1 Multiple headers are concatenated into a comma-separated string,
     28 	 *              rather than remaining an array.
     29 	 *
     30 	 * @param string       $url             Remote file URL.
     31 	 * @param int          $timeout         Optional. How long the connection should stay open in seconds.
     32 	 *                                      Default 10.
     33 	 * @param int          $redirects       Optional. The number of allowed redirects. Default 5.
     34 	 * @param string|array $headers         Optional. Array or string of headers to send with the request.
     35 	 *                                      Default null.
     36 	 * @param string       $useragent       Optional. User-agent value sent. Default null.
     37 	 * @param bool         $force_fsockopen Optional. Whether to force opening internet or unix domain socket
     38 	 *                                      connection or not. Default false.
     39 	 */
     40 	public function __construct( $url, $timeout = 10, $redirects = 5, $headers = null, $useragent = null, $force_fsockopen = false ) {
     41 		$this->url       = $url;
     42 		$this->timeout   = $timeout;
     43 		$this->redirects = $redirects;
     44 		$this->headers   = $headers;
     45 		$this->useragent = $useragent;
     46 
     47 		$this->method = SIMPLEPIE_FILE_SOURCE_REMOTE;
     48 
     49 		if ( preg_match( '/^http(s)?:\/\//i', $url ) ) {
     50 			$args = array(
     51 				'timeout'     => $this->timeout,
     52 				'redirection' => $this->redirects,
     53 			);
     54 
     55 			if ( ! empty( $this->headers ) ) {
     56 				$args['headers'] = $this->headers;
     57 			}
     58 
     59 			if ( SIMPLEPIE_USERAGENT != $this->useragent ) { // Use default WP user agent unless custom has been specified.
     60 				$args['user-agent'] = $this->useragent;
     61 			}
     62 
     63 			$res = wp_safe_remote_request( $url, $args );
     64 
     65 			if ( is_wp_error( $res ) ) {
     66 				$this->error   = 'WP HTTP Error: ' . $res->get_error_message();
     67 				$this->success = false;
     68 
     69 			} else {
     70 				$this->headers = wp_remote_retrieve_headers( $res );
     71 
     72 				/*
     73 				 * SimplePie expects multiple headers to be stored as a comma-separated string,
     74 				 * but `wp_remote_retrieve_headers()` returns them as an array, so they need
     75 				 * to be converted.
     76 				 *
     77 				 * The only exception to that is the `content-type` header, which should ignore
     78 				 * any previous values and only use the last one.
     79 				 *
     80 				 * @see SimplePie_HTTP_Parser::new_line().
     81 				 */
     82 				foreach ( $this->headers as $name => $value ) {
     83 					if ( ! is_array( $value ) ) {
     84 						continue;
     85 					}
     86 
     87 					if ( 'content-type' === $name ) {
     88 						$this->headers[ $name ] = array_pop( $value );
     89 					} else {
     90 						$this->headers[ $name ] = implode( ', ', $value );
     91 					}
     92 				}
     93 
     94 				$this->body        = wp_remote_retrieve_body( $res );
     95 				$this->status_code = wp_remote_retrieve_response_code( $res );
     96 			}
     97 		} else {
     98 			$this->error   = '';
     99 			$this->success = false;
    100 		}
    101 	}
    102 }