1 <?php

     2 

     3 if ( !class_exists('SimplePie') )

     4 	require_once( ABSPATH . WPINC . '/class-simplepie.php' );

     5 

     6 class WP_Feed_Cache extends SimplePie_Cache {

     7 	/**

     8 	 * Create a new SimplePie_Cache object

     9 	 *

    10 	 * @static

    11 	 * @access public

    12 	 */

    13 	function create($location, $filename, $extension) {

    14 		return new WP_Feed_Cache_Transient($location, $filename, $extension);

    15 	}

    16 }

    17 

    18 class WP_Feed_Cache_Transient {

    19 	var $name;

    20 	var $mod_name;

    21 	var $lifetime = 43200; //Default lifetime in cache of 12 hours

    22 

    23 	function __construct($location, $filename, $extension) {

    24 		$this->name = 'feed_' . $filename;

    25 		$this->mod_name = 'feed_mod_' . $filename;

    26 

    27 		$lifetime = $this->lifetime;

    28 		/**

    29 		 * Filter the transient lifetime of the feed cache.

    30 		 *

    31 		 * @since 2.8.0

    32 		 *

    33 		 * @param int    $lifetime Cache duration in seconds. Default is 43200 seconds (12 hours).

    34 		 * @param string $filename Unique identifier for the cache object.

    35 		 */

    36 		$this->lifetime = apply_filters( 'wp_feed_cache_transient_lifetime', $lifetime, $filename);

    37 	}

    38 

    39 	function save($data) {

    40 		if ( is_a($data, 'SimplePie') )

    41 			$data = $data->data;

    42 

    43 		set_transient($this->name, $data, $this->lifetime);

    44 		set_transient($this->mod_name, time(), $this->lifetime);

    45 		return true;

    46 	}

    47 

    48 	function load() {

    49 		return get_transient($this->name);

    50 	}

    51 

    52 	function mtime() {

    53 		return get_transient($this->mod_name);

    54 	}

    55 

    56 	function touch() {

    57 		return set_transient($this->mod_name, time(), $this->lifetime);

    58 	}

    59 

    60 	function unlink() {

    61 		delete_transient($this->name);

    62 		delete_transient($this->mod_name);

    63 		return true;

    64 	}

    65 }

    66 

    67 class WP_SimplePie_File extends SimplePie_File {

    68 

    69 	function __construct($url, $timeout = 10, $redirects = 5, $headers = null, $useragent = null, $force_fsockopen = false) {

    70 		$this->url = $url;

    71 		$this->timeout = $timeout;

    72 		$this->redirects = $redirects;

    73 		$this->headers = $headers;

    74 		$this->useragent = $useragent;

    75 

    76 		$this->method = SIMPLEPIE_FILE_SOURCE_REMOTE;

    77 

    78 		if ( preg_match('/^http(s)?:\/\//i', $url) ) {

    79 			$args = array(

    80 				'timeout' => $this->timeout,

    81 				'redirection' => $this->redirects,

    82 			);

    83 

    84 			if ( !empty($this->headers) )

    85 				$args['headers'] = $this->headers;

    86 

    87 			if ( SIMPLEPIE_USERAGENT != $this->useragent ) //Use default WP user agent unless custom has been specified

    88 				$args['user-agent'] = $this->useragent;

    89 

    90 			$res = wp_safe_remote_request($url, $args);

    91 

    92 			if ( is_wp_error($res) ) {

    93 				$this->error = 'WP HTTP Error: ' . $res->get_error_message();

    94 				$this->success = false;

    95 			} else {

    96 				$this->headers = wp_remote_retrieve_headers( $res );

    97 				$this->body = wp_remote_retrieve_body( $res );

    98 				$this->status_code = wp_remote_retrieve_response_code( $res );

    99 			}

   100 		} else {

   101 			$this->error = '';

   102 			$this->success = false;

   103 		}

   104 	}

   105 }

   106 

   107 /**

   108  * WordPress SimplePie Sanitization Class

   109  *

   110  * Extension of the SimplePie_Sanitize class to use KSES, because

   111  * we cannot universally count on DOMDocument being available

   112  *

   113  * @package WordPress

   114  * @since 3.5.0

   115  */

   116 class WP_SimplePie_Sanitize_KSES extends SimplePie_Sanitize {

   117 	public function sanitize( $data, $type, $base = '' ) {

   118 		$data = trim( $data );

   119 		if ( $type & SIMPLEPIE_CONSTRUCT_MAYBE_HTML ) {

   120 			if (preg_match('/(&(#(x[0-9a-fA-F]+|[0-9]+)|[a-zA-Z0-9]+)|<\/[A-Za-z][^\x09\x0A\x0B\x0C\x0D\x20\x2F\x3E]*' . SIMPLEPIE_PCRE_HTML_ATTRIBUTE . '>)/', $data)) {

   121 				$type |= SIMPLEPIE_CONSTRUCT_HTML;

   122 			}

   123 			else {

   124 				$type |= SIMPLEPIE_CONSTRUCT_TEXT;

   125 			}

   126 		}

   127 		if ( $type & SIMPLEPIE_CONSTRUCT_BASE64 ) {

   128 			$data = base64_decode( $data );

   129 		}

   130 		if ( $type & ( SIMPLEPIE_CONSTRUCT_HTML | SIMPLEPIE_CONSTRUCT_XHTML ) ) {

   131 			$data = wp_kses_post( $data );

   132 			if ( $this->output_encoding !== 'UTF-8' ) {

   133 				$data = $this->registry->call( 'Misc', 'change_encoding', array( $data, 'UTF-8', $this->output_encoding ) );

   134 			}

   135 			return $data;

   136 		} else {

   137 			return parent::sanitize( $data, $type, $base );

   138 		}

   139 	}

   140 }